2024y-09m-30d-03h-55m-30s UTC: drm-tip rerere cache update

git version 2.45.2

8 files changed, 14122 insertions, 1929 deletions

diff --git a/rr-cache/27b1863038e6e681fcc8002f7c7c646fa5e5bbe8/postimage b/rr-cache/27b1863038e6e681fcc8002f7c7c646fa5e5bbe8/postimage
deleted file mode 100644
index 80e968f15fc9..000000000000
--- a/rr-cache/27b1863038e6e681fcc8002f7c7c646fa5e5bbe8/postimage
+++ /dev/null
@@ -1,479 +0,0 @@
-/*
- * Copyright 2012 Red Hat Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- */
-/*
- * Authors: Dave Airlie <airlied@redhat.com>
- */
-#ifndef __AST_DRV_H__
-#define __AST_DRV_H__
-
-#include <linux/io.h>
-#include <linux/types.h>
-
-#include <drm/drm_connector.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_encoder.h>
-#include <drm/drm_mode.h>
-#include <drm/drm_framebuffer.h>
-
-#include "ast_reg.h"
-
-#define DRIVER_AUTHOR		"Dave Airlie"
-
-#define DRIVER_NAME		"ast"
-#define DRIVER_DESC		"AST"
-#define DRIVER_DATE		"20120228"
-
-#define DRIVER_MAJOR		0
-#define DRIVER_MINOR		1
-#define DRIVER_PATCHLEVEL	0
-
-#define PCI_CHIP_AST2000 0x2000
-#define PCI_CHIP_AST2100 0x2010
-
-#define __AST_CHIP(__gen, __index)	((__gen) << 16 | (__index))
-
-enum ast_chip {
-	/* 1st gen */
-	AST1000 = __AST_CHIP(1, 0), // unused
-	AST2000 = __AST_CHIP(1, 1),
-	/* 2nd gen */
-	AST1100 = __AST_CHIP(2, 0),
-	AST2100 = __AST_CHIP(2, 1),
-	AST2050 = __AST_CHIP(2, 2), // unused
-	/* 3rd gen */
-	AST2200 = __AST_CHIP(3, 0),
-	AST2150 = __AST_CHIP(3, 1),
-	/* 4th gen */
-	AST2300 = __AST_CHIP(4, 0),
-	AST1300 = __AST_CHIP(4, 1),
-	AST1050 = __AST_CHIP(4, 2), // unused
-	/* 5th gen */
-	AST2400 = __AST_CHIP(5, 0),
-	AST1400 = __AST_CHIP(5, 1),
-	AST1250 = __AST_CHIP(5, 2), // unused
-	/* 6th gen */
-	AST2500 = __AST_CHIP(6, 0),
-	AST2510 = __AST_CHIP(6, 1),
-	AST2520 = __AST_CHIP(6, 2), // unused
-	/* 7th gen */
-	AST2600 = __AST_CHIP(7, 0),
-	AST2620 = __AST_CHIP(7, 1), // unused
-};
-
-#define __AST_CHIP_GEN(__chip)	(((unsigned long)(__chip)) >> 16)
-
-enum ast_tx_chip {
-	AST_TX_NONE,
-	AST_TX_SIL164,
-	AST_TX_DP501,
-	AST_TX_ASTDP,
-};
-
-#define AST_TX_NONE_BIT		BIT(AST_TX_NONE)
-#define AST_TX_SIL164_BIT	BIT(AST_TX_SIL164)
-#define AST_TX_DP501_BIT	BIT(AST_TX_DP501)
-#define AST_TX_ASTDP_BIT	BIT(AST_TX_ASTDP)
-
-enum ast_config_mode {
-	ast_use_p2a,
-	ast_use_dt,
-	ast_use_defaults
-};
-
-#define AST_DRAM_512Mx16 0
-#define AST_DRAM_1Gx16   1
-#define AST_DRAM_512Mx32 2
-#define AST_DRAM_1Gx32   3
-#define AST_DRAM_2Gx16   6
-#define AST_DRAM_4Gx16   7
-#define AST_DRAM_8Gx16   8
-
-/*
- * Hardware cursor
- */
-
-#define AST_MAX_HWC_WIDTH	64
-#define AST_MAX_HWC_HEIGHT	64
-
-#define AST_HWC_SIZE		(AST_MAX_HWC_WIDTH * AST_MAX_HWC_HEIGHT * 2)
-#define AST_HWC_SIGNATURE_SIZE	32
-
-/* define for signature structure */
-#define AST_HWC_SIGNATURE_CHECKSUM	0x00
-#define AST_HWC_SIGNATURE_SizeX		0x04
-#define AST_HWC_SIGNATURE_SizeY		0x08
-#define AST_HWC_SIGNATURE_X		0x0C
-#define AST_HWC_SIGNATURE_Y		0x10
-#define AST_HWC_SIGNATURE_HOTSPOTX	0x14
-#define AST_HWC_SIGNATURE_HOTSPOTY	0x18
-
-/*
- * Planes
- */
-
-struct ast_plane {
-	struct drm_plane base;
-
-	void __iomem *vaddr;
-	u64 offset;
-	unsigned long size;
-};
-
-static inline struct ast_plane *to_ast_plane(struct drm_plane *plane)
-{
-	return container_of(plane, struct ast_plane, base);
-}
-
-/*
- * BMC
- */
-
-struct ast_bmc_connector {
-	struct drm_connector base;
-	struct drm_connector *physical_connector;
-};
-
-static inline struct ast_bmc_connector *
-to_ast_bmc_connector(struct drm_connector *connector)
-{
-	return container_of(connector, struct ast_bmc_connector, base);
-}
-
-/*
- * Device
- */
-
-struct ast_device {
-	struct drm_device base;
-
-	void __iomem *regs;
-	void __iomem *ioregs;
-	void __iomem *dp501_fw_buf;
-
-	enum ast_config_mode config_mode;
-	enum ast_chip chip;
-
-	uint32_t dram_bus_width;
-	uint32_t dram_type;
-	uint32_t mclk;
-
-	void __iomem	*vram;
-	unsigned long	vram_base;
-	unsigned long	vram_size;
-	unsigned long	vram_fb_available;
-
-	struct mutex modeset_lock; /* Protects access to modeset I/O registers in ioregs */
-
-	struct ast_plane primary_plane;
-	struct ast_plane cursor_plane;
-	struct drm_crtc crtc;
-	struct {
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} vga;
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} sil164;
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} dp501;
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} astdp;
-		struct {
-			struct drm_encoder encoder;
-			struct ast_bmc_connector bmc_connector;
-		} bmc;
-	} output;
-
-	bool support_wide_screen;
-
-	unsigned long tx_chip_types;		/* bitfield of enum ast_chip_type */
-	u8 *dp501_fw_addr;
-	const struct firmware *dp501_fw;	/* dp501 fw */
-};
-
-static inline struct ast_device *to_ast_device(struct drm_device *dev)
-{
-	return container_of(dev, struct ast_device, base);
-}
-
-struct drm_device *ast_device_create(struct pci_dev *pdev,
-				     const struct drm_driver *drv,
-				     enum ast_chip chip,
-				     enum ast_config_mode config_mode,
-				     void __iomem *regs,
-				     void __iomem *ioregs,
-				     bool need_post);
-
-static inline unsigned long __ast_gen(struct ast_device *ast)
-{
-	return __AST_CHIP_GEN(ast->chip);
-}
-#define AST_GEN(__ast)	__ast_gen(__ast)
-
-static inline bool __ast_gen_is_eq(struct ast_device *ast, unsigned long gen)
-{
-	return __ast_gen(ast) == gen;
-}
-#define IS_AST_GEN1(__ast)	__ast_gen_is_eq(__ast, 1)
-#define IS_AST_GEN2(__ast)	__ast_gen_is_eq(__ast, 2)
-#define IS_AST_GEN3(__ast)	__ast_gen_is_eq(__ast, 3)
-#define IS_AST_GEN4(__ast)	__ast_gen_is_eq(__ast, 4)
-#define IS_AST_GEN5(__ast)	__ast_gen_is_eq(__ast, 5)
-#define IS_AST_GEN6(__ast)	__ast_gen_is_eq(__ast, 6)
-#define IS_AST_GEN7(__ast)	__ast_gen_is_eq(__ast, 7)
-
-static inline u8 __ast_read8(const void __iomem *addr, u32 reg)
-{
-	return ioread8(addr + reg);
-}
-
-static inline u32 __ast_read32(const void __iomem *addr, u32 reg)
-{
-	return ioread32(addr + reg);
-}
-
-static inline void __ast_write8(void __iomem *addr, u32 reg, u8 val)
-{
-	iowrite8(val, addr + reg);
-}
-
-static inline void __ast_write32(void __iomem *addr, u32 reg, u32 val)
-{
-	iowrite32(val, addr + reg);
-}
-
-static inline u8 __ast_read8_i(void __iomem *addr, u32 reg, u8 index)
-{
-	__ast_write8(addr, reg, index);
-	return __ast_read8(addr, reg + 1);
-}
-
-static inline u8 __ast_read8_i_masked(void __iomem *addr, u32 reg, u8 index, u8 read_mask)
-{
-	u8 val = __ast_read8_i(addr, reg, index);
-
-	return val & read_mask;
-}
-
-static inline void __ast_write8_i(void __iomem *addr, u32 reg, u8 index, u8 val)
-{
-	__ast_write8(addr, reg, index);
-	__ast_write8(addr, reg + 1, val);
-}
-
-static inline void __ast_write8_i_masked(void __iomem *addr, u32 reg, u8 index, u8 read_mask,
-					 u8 val)
-{
-	u8 tmp = __ast_read8_i_masked(addr, reg, index, read_mask);
-
-	tmp |= val;
-	__ast_write8_i(addr, reg, index, tmp);
-}
-
-static inline u32 ast_read32(struct ast_device *ast, u32 reg)
-{
-	return __ast_read32(ast->regs, reg);
-}
-
-static inline void ast_write32(struct ast_device *ast, u32 reg, u32 val)
-{
-	__ast_write32(ast->regs, reg, val);
-}
-
-static inline u8 ast_io_read8(struct ast_device *ast, u32 reg)
-{
-	return __ast_read8(ast->ioregs, reg);
-}
-
-static inline void ast_io_write8(struct ast_device *ast, u32 reg, u8 val)
-{
-	__ast_write8(ast->ioregs, reg, val);
-}
-
-static inline u8 ast_get_index_reg(struct ast_device *ast, u32 base, u8 index)
-{
-	return __ast_read8_i(ast->ioregs, base, index);
-}
-
-static inline u8 ast_get_index_reg_mask(struct ast_device *ast, u32 base, u8 index,
-					u8 preserve_mask)
-{
-	return __ast_read8_i_masked(ast->ioregs, base, index, preserve_mask);
-}
-
-static inline void ast_set_index_reg(struct ast_device *ast, u32 base, u8 index, u8 val)
-{
-	__ast_write8_i(ast->ioregs, base, index, val);
-}
-
-static inline void ast_set_index_reg_mask(struct ast_device *ast, u32 base, u8 index,
-					  u8 preserve_mask, u8 val)
-{
-	__ast_write8_i_masked(ast->ioregs, base, index, preserve_mask, val);
-}
-
-#define AST_VIDMEM_SIZE_8M    0x00800000
-#define AST_VIDMEM_SIZE_16M   0x01000000
-#define AST_VIDMEM_SIZE_32M   0x02000000
-#define AST_VIDMEM_SIZE_64M   0x04000000
-#define AST_VIDMEM_SIZE_128M  0x08000000
-
-#define AST_VIDMEM_DEFAULT_SIZE AST_VIDMEM_SIZE_8M
-
-struct ast_vbios_stdtable {
-	u8 misc;
-	u8 seq[4];
-	u8 crtc[25];
-	u8 ar[20];
-	u8 gr[9];
-};
-
-struct ast_vbios_enhtable {
-	u32 ht;
-	u32 hde;
-	u32 hfp;
-	u32 hsync;
-	u32 vt;
-	u32 vde;
-	u32 vfp;
-	u32 vsync;
-	u32 dclk_index;
-	u32 flags;
-	u32 refresh_rate;
-	u32 refresh_rate_index;
-	u32 mode_id;
-};
-
-struct ast_vbios_dclk_info {
-	u8 param1;
-	u8 param2;
-	u8 param3;
-};
-
-struct ast_vbios_mode_info {
-	const struct ast_vbios_stdtable *std_table;
-	const struct ast_vbios_enhtable *enh_table;
-};
-
-struct ast_crtc_state {
-	struct drm_crtc_state base;
-
-	/* Last known format of primary plane */
-	const struct drm_format_info *format;
-
-	struct ast_vbios_mode_info vbios_mode_info;
-};
-
-#define to_ast_crtc_state(state) container_of(state, struct ast_crtc_state, base)
-
-int ast_mode_config_init(struct ast_device *ast);
-
-#define AST_MM_ALIGN_SHIFT 4
-#define AST_MM_ALIGN_MASK ((1 << AST_MM_ALIGN_SHIFT) - 1)
-
-#define AST_DP501_FW_VERSION_MASK	GENMASK(7, 4)
-#define AST_DP501_FW_VERSION_1		BIT(4)
-#define AST_DP501_PNP_CONNECTED		BIT(1)
-
-#define AST_DP501_DEFAULT_DCLK	65
-
-#define AST_DP501_GBL_VERSION	0xf000
-#define AST_DP501_PNPMONITOR	0xf010
-#define AST_DP501_LINKRATE	0xf014
-#define AST_DP501_EDID_DATA	0xf020
-
-#define AST_DP_POWER_ON			true
-#define AST_DP_POWER_OFF			false
-
-/*
- * ASTDP resoultion table:
- * EX:	ASTDP_A_B_C:
- *		A: Resolution
- *		B: Refresh Rate
- *		C: Misc information, such as CVT, Reduce Blanked
- */
-#define ASTDP_640x480_60		0x00
-#define ASTDP_640x480_72		0x01
-#define ASTDP_640x480_75		0x02
-#define ASTDP_640x480_85		0x03
-#define ASTDP_800x600_56		0x04
-#define ASTDP_800x600_60		0x05
-#define ASTDP_800x600_72		0x06
-#define ASTDP_800x600_75		0x07
-#define ASTDP_800x600_85		0x08
-#define ASTDP_1024x768_60		0x09
-#define ASTDP_1024x768_70		0x0A
-#define ASTDP_1024x768_75		0x0B
-#define ASTDP_1024x768_85		0x0C
-#define ASTDP_1280x1024_60		0x0D
-#define ASTDP_1280x1024_75		0x0E
-#define ASTDP_1280x1024_85		0x0F
-#define ASTDP_1600x1200_60		0x10
-#define ASTDP_320x240_60		0x11
-#define ASTDP_400x300_60		0x12
-#define ASTDP_512x384_60		0x13
-#define ASTDP_1920x1200_60		0x14
-#define ASTDP_1920x1080_60		0x15
-#define ASTDP_1280x800_60		0x16
-#define ASTDP_1280x800_60_RB	0x17
-#define ASTDP_1440x900_60		0x18
-#define ASTDP_1440x900_60_RB	0x19
-#define ASTDP_1680x1050_60		0x1A
-#define ASTDP_1680x1050_60_RB	0x1B
-#define ASTDP_1600x900_60		0x1C
-#define ASTDP_1600x900_60_RB	0x1D
-#define ASTDP_1366x768_60		0x1E
-#define ASTDP_1152x864_75		0x1F
-
-int ast_mm_init(struct ast_device *ast);
-
-/* ast post */
-void ast_post_gpu(struct drm_device *dev);
-u32 ast_mindwm(struct ast_device *ast, u32 r);
-void ast_moutdwm(struct ast_device *ast, u32 r, u32 v);
-void ast_patch_ahb_2500(void __iomem *regs);
-/* ast dp501 */
-void ast_set_dp501_video_output(struct drm_device *dev, u8 mode);
-bool ast_backup_fw(struct drm_device *dev, u8 *addr, u32 size);
-bool ast_dp501_is_connected(struct ast_device *ast);
-bool ast_dp501_read_edid(struct drm_device *dev, u8 *ediddata);
-u8 ast_get_dp501_max_clk(struct drm_device *dev);
-void ast_init_3rdtx(struct drm_device *dev);
-
-/* aspeed DP */
-bool ast_astdp_is_connected(struct ast_device *ast);
-int ast_astdp_read_edid(struct drm_device *dev, u8 *ediddata);
-int ast_dp_launch(struct ast_device *ast);
-void ast_dp_power_on_off(struct drm_device *dev, bool no);
-void ast_dp_set_on_off(struct drm_device *dev, bool no);
-void ast_dp_set_mode(struct drm_crtc *crtc, struct ast_vbios_mode_info *vbios_mode);
-
-#endif
diff --git a/rr-cache/27b1863038e6e681fcc8002f7c7c646fa5e5bbe8/preimage b/rr-cache/27b1863038e6e681fcc8002f7c7c646fa5e5bbe8/preimage
deleted file mode 100644
index 2d4bd902bb9a..000000000000
--- a/rr-cache/27b1863038e6e681fcc8002f7c7c646fa5e5bbe8/preimage
+++ /dev/null
@@ -1,484 +0,0 @@
-/*
- * Copyright 2012 Red Hat Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- */
-/*
- * Authors: Dave Airlie <airlied@redhat.com>
- */
-#ifndef __AST_DRV_H__
-#define __AST_DRV_H__
-
-#include <linux/io.h>
-#include <linux/types.h>
-
-#include <drm/drm_connector.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_encoder.h>
-#include <drm/drm_mode.h>
-#include <drm/drm_framebuffer.h>
-
-#include "ast_reg.h"
-
-#define DRIVER_AUTHOR		"Dave Airlie"
-
-#define DRIVER_NAME		"ast"
-#define DRIVER_DESC		"AST"
-#define DRIVER_DATE		"20120228"
-
-#define DRIVER_MAJOR		0
-#define DRIVER_MINOR		1
-#define DRIVER_PATCHLEVEL	0
-
-#define PCI_CHIP_AST2000 0x2000
-#define PCI_CHIP_AST2100 0x2010
-
-#define __AST_CHIP(__gen, __index)	((__gen) << 16 | (__index))
-
-enum ast_chip {
-	/* 1st gen */
-	AST1000 = __AST_CHIP(1, 0), // unused
-	AST2000 = __AST_CHIP(1, 1),
-	/* 2nd gen */
-	AST1100 = __AST_CHIP(2, 0),
-	AST2100 = __AST_CHIP(2, 1),
-	AST2050 = __AST_CHIP(2, 2), // unused
-	/* 3rd gen */
-	AST2200 = __AST_CHIP(3, 0),
-	AST2150 = __AST_CHIP(3, 1),
-	/* 4th gen */
-	AST2300 = __AST_CHIP(4, 0),
-	AST1300 = __AST_CHIP(4, 1),
-	AST1050 = __AST_CHIP(4, 2), // unused
-	/* 5th gen */
-	AST2400 = __AST_CHIP(5, 0),
-	AST1400 = __AST_CHIP(5, 1),
-	AST1250 = __AST_CHIP(5, 2), // unused
-	/* 6th gen */
-	AST2500 = __AST_CHIP(6, 0),
-	AST2510 = __AST_CHIP(6, 1),
-	AST2520 = __AST_CHIP(6, 2), // unused
-	/* 7th gen */
-	AST2600 = __AST_CHIP(7, 0),
-	AST2620 = __AST_CHIP(7, 1), // unused
-};
-
-#define __AST_CHIP_GEN(__chip)	(((unsigned long)(__chip)) >> 16)
-
-enum ast_tx_chip {
-	AST_TX_NONE,
-	AST_TX_SIL164,
-	AST_TX_DP501,
-	AST_TX_ASTDP,
-};
-
-#define AST_TX_NONE_BIT		BIT(AST_TX_NONE)
-#define AST_TX_SIL164_BIT	BIT(AST_TX_SIL164)
-#define AST_TX_DP501_BIT	BIT(AST_TX_DP501)
-#define AST_TX_ASTDP_BIT	BIT(AST_TX_ASTDP)
-
-enum ast_config_mode {
-	ast_use_p2a,
-	ast_use_dt,
-	ast_use_defaults
-};
-
-#define AST_DRAM_512Mx16 0
-#define AST_DRAM_1Gx16   1
-#define AST_DRAM_512Mx32 2
-#define AST_DRAM_1Gx32   3
-#define AST_DRAM_2Gx16   6
-#define AST_DRAM_4Gx16   7
-#define AST_DRAM_8Gx16   8
-
-/*
- * Hardware cursor
- */
-
-#define AST_MAX_HWC_WIDTH	64
-#define AST_MAX_HWC_HEIGHT	64
-
-#define AST_HWC_SIZE		(AST_MAX_HWC_WIDTH * AST_MAX_HWC_HEIGHT * 2)
-#define AST_HWC_SIGNATURE_SIZE	32
-
-/* define for signature structure */
-#define AST_HWC_SIGNATURE_CHECKSUM	0x00
-#define AST_HWC_SIGNATURE_SizeX		0x04
-#define AST_HWC_SIGNATURE_SizeY		0x08
-#define AST_HWC_SIGNATURE_X		0x0C
-#define AST_HWC_SIGNATURE_Y		0x10
-#define AST_HWC_SIGNATURE_HOTSPOTX	0x14
-#define AST_HWC_SIGNATURE_HOTSPOTY	0x18
-
-/*
- * Planes
- */
-
-struct ast_plane {
-	struct drm_plane base;
-
-	void __iomem *vaddr;
-	u64 offset;
-	unsigned long size;
-};
-
-static inline struct ast_plane *to_ast_plane(struct drm_plane *plane)
-{
-	return container_of(plane, struct ast_plane, base);
-}
-
-/*
- * BMC
- */
-
-struct ast_bmc_connector {
-	struct drm_connector base;
-	struct drm_connector *physical_connector;
-};
-
-static inline struct ast_bmc_connector *
-to_ast_bmc_connector(struct drm_connector *connector)
-{
-	return container_of(connector, struct ast_bmc_connector, base);
-}
-
-/*
- * Device
- */
-
-struct ast_device {
-	struct drm_device base;
-
-	void __iomem *regs;
-	void __iomem *ioregs;
-	void __iomem *dp501_fw_buf;
-
-	enum ast_config_mode config_mode;
-	enum ast_chip chip;
-
-	uint32_t dram_bus_width;
-	uint32_t dram_type;
-	uint32_t mclk;
-
-	void __iomem	*vram;
-	unsigned long	vram_base;
-	unsigned long	vram_size;
-	unsigned long	vram_fb_available;
-
-	struct mutex modeset_lock; /* Protects access to modeset I/O registers in ioregs */
-
-	struct ast_plane primary_plane;
-	struct ast_plane cursor_plane;
-	struct drm_crtc crtc;
-	struct {
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} vga;
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} sil164;
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} dp501;
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} astdp;
-		struct {
-			struct drm_encoder encoder;
-			struct ast_bmc_connector bmc_connector;
-		} bmc;
-	} output;
-
-	bool support_wide_screen;
-
-	unsigned long tx_chip_types;		/* bitfield of enum ast_chip_type */
-	u8 *dp501_fw_addr;
-	const struct firmware *dp501_fw;	/* dp501 fw */
-};
-
-static inline struct ast_device *to_ast_device(struct drm_device *dev)
-{
-	return container_of(dev, struct ast_device, base);
-}
-
-struct drm_device *ast_device_create(struct pci_dev *pdev,
-				     const struct drm_driver *drv,
-				     enum ast_chip chip,
-				     enum ast_config_mode config_mode,
-				     void __iomem *regs,
-				     void __iomem *ioregs,
-				     bool need_post);
-
-static inline unsigned long __ast_gen(struct ast_device *ast)
-{
-	return __AST_CHIP_GEN(ast->chip);
-}
-#define AST_GEN(__ast)	__ast_gen(__ast)
-
-static inline bool __ast_gen_is_eq(struct ast_device *ast, unsigned long gen)
-{
-	return __ast_gen(ast) == gen;
-}
-#define IS_AST_GEN1(__ast)	__ast_gen_is_eq(__ast, 1)
-#define IS_AST_GEN2(__ast)	__ast_gen_is_eq(__ast, 2)
-#define IS_AST_GEN3(__ast)	__ast_gen_is_eq(__ast, 3)
-#define IS_AST_GEN4(__ast)	__ast_gen_is_eq(__ast, 4)
-#define IS_AST_GEN5(__ast)	__ast_gen_is_eq(__ast, 5)
-#define IS_AST_GEN6(__ast)	__ast_gen_is_eq(__ast, 6)
-#define IS_AST_GEN7(__ast)	__ast_gen_is_eq(__ast, 7)
-
-static inline u8 __ast_read8(const void __iomem *addr, u32 reg)
-{
-	return ioread8(addr + reg);
-}
-
-static inline u32 __ast_read32(const void __iomem *addr, u32 reg)
-{
-	return ioread32(addr + reg);
-}
-
-static inline void __ast_write8(void __iomem *addr, u32 reg, u8 val)
-{
-	iowrite8(val, addr + reg);
-}
-
-static inline void __ast_write32(void __iomem *addr, u32 reg, u32 val)
-{
-	iowrite32(val, addr + reg);
-}
-
-static inline u8 __ast_read8_i(void __iomem *addr, u32 reg, u8 index)
-{
-	__ast_write8(addr, reg, index);
-	return __ast_read8(addr, reg + 1);
-}
-
-static inline u8 __ast_read8_i_masked(void __iomem *addr, u32 reg, u8 index, u8 read_mask)
-{
-	u8 val = __ast_read8_i(addr, reg, index);
-
-	return val & read_mask;
-}
-
-static inline void __ast_write8_i(void __iomem *addr, u32 reg, u8 index, u8 val)
-{
-	__ast_write8(addr, reg, index);
-	__ast_write8(addr, reg + 1, val);
-}
-
-static inline void __ast_write8_i_masked(void __iomem *addr, u32 reg, u8 index, u8 read_mask,
-					 u8 val)
-{
-	u8 tmp = __ast_read8_i_masked(addr, reg, index, read_mask);
-
-	tmp |= val;
-	__ast_write8_i(addr, reg, index, tmp);
-}
-
-static inline u32 ast_read32(struct ast_device *ast, u32 reg)
-{
-	return __ast_read32(ast->regs, reg);
-}
-
-static inline void ast_write32(struct ast_device *ast, u32 reg, u32 val)
-{
-	__ast_write32(ast->regs, reg, val);
-}
-
-static inline u8 ast_io_read8(struct ast_device *ast, u32 reg)
-{
-	return __ast_read8(ast->ioregs, reg);
-}
-
-static inline void ast_io_write8(struct ast_device *ast, u32 reg, u8 val)
-{
-	__ast_write8(ast->ioregs, reg, val);
-}
-
-static inline u8 ast_get_index_reg(struct ast_device *ast, u32 base, u8 index)
-{
-	return __ast_read8_i(ast->ioregs, base, index);
-}
-
-static inline u8 ast_get_index_reg_mask(struct ast_device *ast, u32 base, u8 index,
-					u8 preserve_mask)
-{
-	return __ast_read8_i_masked(ast->ioregs, base, index, preserve_mask);
-}
-
-static inline void ast_set_index_reg(struct ast_device *ast, u32 base, u8 index, u8 val)
-{
-	__ast_write8_i(ast->ioregs, base, index, val);
-}
-
-static inline void ast_set_index_reg_mask(struct ast_device *ast, u32 base, u8 index,
-					  u8 preserve_mask, u8 val)
-{
-	__ast_write8_i_masked(ast->ioregs, base, index, preserve_mask, val);
-}
-
-#define AST_VIDMEM_SIZE_8M    0x00800000
-#define AST_VIDMEM_SIZE_16M   0x01000000
-#define AST_VIDMEM_SIZE_32M   0x02000000
-#define AST_VIDMEM_SIZE_64M   0x04000000
-#define AST_VIDMEM_SIZE_128M  0x08000000
-
-#define AST_VIDMEM_DEFAULT_SIZE AST_VIDMEM_SIZE_8M
-
-struct ast_vbios_stdtable {
-	u8 misc;
-	u8 seq[4];
-	u8 crtc[25];
-	u8 ar[20];
-	u8 gr[9];
-};
-
-struct ast_vbios_enhtable {
-	u32 ht;
-	u32 hde;
-	u32 hfp;
-	u32 hsync;
-	u32 vt;
-	u32 vde;
-	u32 vfp;
-	u32 vsync;
-	u32 dclk_index;
-	u32 flags;
-	u32 refresh_rate;
-	u32 refresh_rate_index;
-	u32 mode_id;
-};
-
-struct ast_vbios_dclk_info {
-	u8 param1;
-	u8 param2;
-	u8 param3;
-};
-
-struct ast_vbios_mode_info {
-	const struct ast_vbios_stdtable *std_table;
-	const struct ast_vbios_enhtable *enh_table;
-};
-
-struct ast_crtc_state {
-	struct drm_crtc_state base;
-
-	/* Last known format of primary plane */
-	const struct drm_format_info *format;
-
-	struct ast_vbios_mode_info vbios_mode_info;
-};
-
-#define to_ast_crtc_state(state) container_of(state, struct ast_crtc_state, base)
-
-int ast_mode_config_init(struct ast_device *ast);
-
-#define AST_MM_ALIGN_SHIFT 4
-#define AST_MM_ALIGN_MASK ((1 << AST_MM_ALIGN_SHIFT) - 1)
-
-#define AST_DP501_FW_VERSION_MASK	GENMASK(7, 4)
-#define AST_DP501_FW_VERSION_1		BIT(4)
-#define AST_DP501_PNP_CONNECTED		BIT(1)
-
-#define AST_DP501_DEFAULT_DCLK	65
-
-#define AST_DP501_GBL_VERSION	0xf000
-#define AST_DP501_PNPMONITOR	0xf010
-#define AST_DP501_LINKRATE	0xf014
-#define AST_DP501_EDID_DATA	0xf020
-
-#define AST_DP_POWER_ON			true
-#define AST_DP_POWER_OFF			false
-
-/*
- * ASTDP resoultion table:
- * EX:	ASTDP_A_B_C:
- *		A: Resolution
- *		B: Refresh Rate
- *		C: Misc information, such as CVT, Reduce Blanked
- */
-#define ASTDP_640x480_60		0x00
-#define ASTDP_640x480_72		0x01
-#define ASTDP_640x480_75		0x02
-#define ASTDP_640x480_85		0x03
-#define ASTDP_800x600_56		0x04
-#define ASTDP_800x600_60		0x05
-#define ASTDP_800x600_72		0x06
-#define ASTDP_800x600_75		0x07
-#define ASTDP_800x600_85		0x08
-#define ASTDP_1024x768_60		0x09
-#define ASTDP_1024x768_70		0x0A
-#define ASTDP_1024x768_75		0x0B
-#define ASTDP_1024x768_85		0x0C
-#define ASTDP_1280x1024_60		0x0D
-#define ASTDP_1280x1024_75		0x0E
-#define ASTDP_1280x1024_85		0x0F
-#define ASTDP_1600x1200_60		0x10
-#define ASTDP_320x240_60		0x11
-#define ASTDP_400x300_60		0x12
-#define ASTDP_512x384_60		0x13
-#define ASTDP_1920x1200_60		0x14
-#define ASTDP_1920x1080_60		0x15
-#define ASTDP_1280x800_60		0x16
-#define ASTDP_1280x800_60_RB	0x17
-#define ASTDP_1440x900_60		0x18
-#define ASTDP_1440x900_60_RB	0x19
-#define ASTDP_1680x1050_60		0x1A
-#define ASTDP_1680x1050_60_RB	0x1B
-#define ASTDP_1600x900_60		0x1C
-#define ASTDP_1600x900_60_RB	0x1D
-#define ASTDP_1366x768_60		0x1E
-#define ASTDP_1152x864_75		0x1F
-
-int ast_mm_init(struct ast_device *ast);
-
-/* ast post */
-void ast_post_gpu(struct drm_device *dev);
-u32 ast_mindwm(struct ast_device *ast, u32 r);
-void ast_moutdwm(struct ast_device *ast, u32 r, u32 v);
-void ast_patch_ahb_2500(void __iomem *regs);
-/* ast dp501 */
-void ast_set_dp501_video_output(struct drm_device *dev, u8 mode);
-bool ast_backup_fw(struct drm_device *dev, u8 *addr, u32 size);
-bool ast_dp501_is_connected(struct ast_device *ast);
-bool ast_dp501_read_edid(struct drm_device *dev, u8 *ediddata);
-u8 ast_get_dp501_max_clk(struct drm_device *dev);
-void ast_init_3rdtx(struct drm_device *dev);
-
-/* aspeed DP */
-bool ast_astdp_is_connected(struct ast_device *ast);
-int ast_astdp_read_edid(struct drm_device *dev, u8 *ediddata);
-<<<<<<<
-int ast_dp_launch(struct ast_device *ast);
-bool ast_dp_power_is_on(struct ast_device *ast);
-=======
-void ast_dp_launch(struct drm_device *dev);
->>>>>>>
-void ast_dp_power_on_off(struct drm_device *dev, bool no);
-void ast_dp_set_on_off(struct drm_device *dev, bool no);
-void ast_dp_set_mode(struct drm_crtc *crtc, struct ast_vbios_mode_info *vbios_mode);
-
-#endif
diff --git a/rr-cache/3976fd0779d10fdf2e4f02e18d5ffac049c59a78/postimage b/rr-cache/3976fd0779d10fdf2e4f02e18d5ffac049c59a78/postimage
new file mode 100644
index 000000000000..4c7e862cdf2d
--- /dev/null
+++ b/rr-cache/3976fd0779d10fdf2e4f02e18d5ffac049c59a78/postimage
@@ -0,0 +1,408 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * USB-ACPI glue code
+ *
+ * Copyright 2012 Red Hat <mjg@redhat.com>
+ */
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/acpi.h>
+#include <linux/pci.h>
+#include <linux/usb/hcd.h>
+#include <linux/dmi.h>
+
+#include "hub.h"
+
+/**
+ * usb_acpi_power_manageable - check whether usb port has
+ * acpi power resource.
+ * @hdev: USB device belonging to the usb hub
+ * @index: port index based zero
+ *
+ * Return true if the port has acpi power resource and false if no.
+ */
+bool usb_acpi_power_manageable(struct usb_device *hdev, int index)
+{
+	acpi_handle port_handle;
+	int port1 = index + 1;
+
+	port_handle = usb_get_hub_port_acpi_handle(hdev,
+		port1);
+	if (port_handle)
+		return acpi_bus_power_manageable(port_handle);
+	else
+		return false;
+}
+EXPORT_SYMBOL_GPL(usb_acpi_power_manageable);
+
+#define UUID_USB_CONTROLLER_DSM "ce2ee385-00e6-48cb-9f05-2edb927c4899"
+#define USB_DSM_DISABLE_U1_U2_FOR_PORT	5
+
+/**
+ * usb_acpi_port_lpm_incapable - check if lpm should be disabled for a port.
+ * @hdev: USB device belonging to the usb hub
+ * @index: zero based port index
+ *
+ * Some USB3 ports may not support USB3 link power management U1/U2 states
+ * due to different retimer setup. ACPI provides _DSM method which returns 0x01
+ * if U1 and U2 states should be disabled. Evaluate _DSM with:
+ * Arg0: UUID = ce2ee385-00e6-48cb-9f05-2edb927c4899
+ * Arg1: Revision ID = 0
+ * Arg2: Function Index = 5
+ * Arg3: (empty)
+ *
+ * Return 1 if USB3 port is LPM incapable, negative on error, otherwise 0
+ */
+
+int usb_acpi_port_lpm_incapable(struct usb_device *hdev, int index)
+{
+	union acpi_object *obj;
+	acpi_handle port_handle;
+	int port1 = index + 1;
+	guid_t guid;
+	int ret;
+
+	ret = guid_parse(UUID_USB_CONTROLLER_DSM, &guid);
+	if (ret)
+		return ret;
+
+	port_handle = usb_get_hub_port_acpi_handle(hdev, port1);
+	if (!port_handle) {
+		dev_dbg(&hdev->dev, "port-%d no acpi handle\n", port1);
+		return -ENODEV;
+	}
+
+	if (!acpi_check_dsm(port_handle, &guid, 0,
+			    BIT(USB_DSM_DISABLE_U1_U2_FOR_PORT))) {
+		dev_dbg(&hdev->dev, "port-%d no _DSM function %d\n",
+			port1, USB_DSM_DISABLE_U1_U2_FOR_PORT);
+		return -ENODEV;
+	}
+
+	obj = acpi_evaluate_dsm_typed(port_handle, &guid, 0,
+				      USB_DSM_DISABLE_U1_U2_FOR_PORT, NULL,
+				      ACPI_TYPE_INTEGER);
+	if (!obj) {
+		dev_dbg(&hdev->dev, "evaluate port-%d _DSM failed\n", port1);
+		return -EINVAL;
+	}
+
+	if (obj->integer.value == 0x01)
+		ret = 1;
+
+	ACPI_FREE(obj);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(usb_acpi_port_lpm_incapable);
+
+/**
+ * usb_acpi_set_power_state - control usb port's power via acpi power
+ * resource
+ * @hdev: USB device belonging to the usb hub
+ * @index: port index based zero
+ * @enable: power state expected to be set
+ *
+ * Notice to use usb_acpi_power_manageable() to check whether the usb port
+ * has acpi power resource before invoking this function.
+ *
+ * Returns 0 on success, else negative errno.
+ */
+int usb_acpi_set_power_state(struct usb_device *hdev, int index, bool enable)
+{
+	struct usb_hub *hub = usb_hub_to_struct_hub(hdev);
+	struct usb_port *port_dev;
+	acpi_handle port_handle;
+	unsigned char state;
+	int port1 = index + 1;
+	int error = -EINVAL;
+
+	if (!hub)
+		return -ENODEV;
+	port_dev = hub->ports[port1 - 1];
+
+	port_handle = (acpi_handle) usb_get_hub_port_acpi_handle(hdev, port1);
+	if (!port_handle)
+		return error;
+
+	if (enable)
+		state = ACPI_STATE_D0;
+	else
+		state = ACPI_STATE_D3_COLD;
+
+	error = acpi_bus_set_power(port_handle, state);
+	if (!error)
+		dev_dbg(&port_dev->dev, "acpi: power was set to %d\n", enable);
+	else
+		dev_dbg(&port_dev->dev, "acpi: power failed to be set\n");
+
+	return error;
+}
+EXPORT_SYMBOL_GPL(usb_acpi_set_power_state);
+
+/**
+ * usb_acpi_add_usb4_devlink - add device link to USB4 Host Interface for tunneled USB3 devices
+ *
+ * @udev: Tunneled USB3 device connected to a roothub.
+ *
+ * Adds a device link between a tunneled USB3 device and the USB4 Host Interface
+ * device to ensure correct runtime PM suspend and resume order. This function
+ * should only be called for tunneled USB3 devices.
+ * The USB4 Host Interface this tunneled device depends on is found from the roothub
+ * port ACPI device specific data _DSD entry.
+ *
+ * Return: negative error code on failure, 0 otherwise
+ */
+static int usb_acpi_add_usb4_devlink(struct usb_device *udev)
+{
+	const struct device_link *link;
+	struct usb_port *port_dev;
+	struct usb_hub *hub;
+
+	if (!udev->parent || udev->parent->parent)
+		return 0;
+
+	hub = usb_hub_to_struct_hub(udev->parent);
+	port_dev = hub->ports[udev->portnum - 1];
+
+	struct fwnode_handle *nhi_fwnode __free(fwnode_handle) =
+		fwnode_find_reference(dev_fwnode(&port_dev->dev), "usb4-host-interface", 0);
+
+	if (IS_ERR(nhi_fwnode))
+		return 0;
+
+	link = device_link_add(&port_dev->child->dev, nhi_fwnode->dev,
+			       DL_FLAG_AUTOREMOVE_CONSUMER |
+			       DL_FLAG_RPM_ACTIVE |
+			       DL_FLAG_PM_RUNTIME);
+	if (!link) {
+		dev_err(&port_dev->dev, "Failed to created device link from %s to %s\n",
+			dev_name(&port_dev->child->dev), dev_name(nhi_fwnode->dev));
+		return -EINVAL;
+	}
+
+	dev_dbg(&port_dev->dev, "Created device link from %s to %s\n",
+		dev_name(&port_dev->child->dev), dev_name(nhi_fwnode->dev));
+
+	return 0;
+}
+
+static const struct dmi_system_id intel_icl_broken_acpi[] = {
+	{
+		.ident = "ICL RVP",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Ice Lake Client Platform"),
+		},
+	},
+
+	{ }
+};
+static bool acpi_connection_type_broken;
+
+/*
+ * Private to usb-acpi, all the core needs to know is that
+ * port_dev->location is non-zero when it has been set by the firmware.
+ */
+#define USB_ACPI_LOCATION_VALID (1 << 31)
+
+static void
+usb_acpi_get_connect_type(struct usb_port *port_dev, acpi_handle *handle)
+{
+	enum usb_port_connect_type connect_type = USB_PORT_CONNECT_TYPE_UNKNOWN;
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	union acpi_object *upc = NULL;
+	struct acpi_pld_info *pld = NULL;
+	acpi_status status;
+
+	/* Work around unknown ACPI instruction error on ICL RVP BIOSes. */
+	if (acpi_connection_type_broken) {
+		port_dev->connect_type = USB_PORT_CONNECT_TYPE_UNKNOWN;
+		return;
+	}
+
+	/*
+	 * According to 9.14 in ACPI Spec 6.2. _PLD indicates whether usb port
+	 * is user visible and _UPC indicates whether it is connectable. If
+	 * the port was visible and connectable, it could be freely connected
+	 * and disconnected with USB devices. If no visible and connectable,
+	 * a usb device is directly hard-wired to the port. If no visible and
+	 * no connectable, the port would be not used.
+	 */
+
+	status = acpi_get_physical_device_location(handle, &pld);
+	if (ACPI_SUCCESS(status) && pld)
+		port_dev->location = USB_ACPI_LOCATION_VALID |
+			pld->group_token << 8 | pld->group_position;
+
+	status = acpi_evaluate_object(handle, "_UPC", NULL, &buffer);
+	if (ACPI_FAILURE(status))
+		goto out;
+
+	upc = buffer.pointer;
+	if (!upc || (upc->type != ACPI_TYPE_PACKAGE) || upc->package.count != 4)
+		goto out;
+
+	/* UPC states port is connectable */
+	if (upc->package.elements[0].integer.value)
+		if (!pld)
+			; /* keep connect_type as unknown */
+		else if (pld->user_visible)
+			connect_type = USB_PORT_CONNECT_TYPE_HOT_PLUG;
+		else
+			connect_type = USB_PORT_CONNECT_TYPE_HARD_WIRED;
+	else
+		connect_type = USB_PORT_NOT_USED;
+out:
+	port_dev->connect_type = connect_type;
+	kfree(upc);
+	ACPI_FREE(pld);
+}
+
+static struct acpi_device *
+usb_acpi_get_companion_for_port(struct usb_port *port_dev)
+{
+	struct usb_device *udev;
+	struct acpi_device *adev;
+	acpi_handle *parent_handle;
+	int port1;
+
+	/* Get the struct usb_device point of port's hub */
+	udev = to_usb_device(port_dev->dev.parent->parent);
+
+	/*
+	 * The root hub ports' parent is the root hub. The non-root-hub
+	 * ports' parent is the parent hub port which the hub is
+	 * connected to.
+	 */
+	if (!udev->parent) {
+		adev = ACPI_COMPANION(&udev->dev);
+		port1 = usb_hcd_find_raw_port_number(bus_to_hcd(udev->bus),
+						     port_dev->portnum);
+	} else {
+		parent_handle = usb_get_hub_port_acpi_handle(udev->parent,
+							     udev->portnum);
+		if (!parent_handle)
+			return NULL;
+
+		adev = acpi_fetch_acpi_dev(parent_handle);
+		port1 = port_dev->portnum;
+	}
+
+	return acpi_find_child_by_adr(adev, port1);
+}
+
+static struct acpi_device *
+usb_acpi_find_companion_for_port(struct usb_port *port_dev)
+{
+	struct acpi_device *adev;
+
+	adev = usb_acpi_get_companion_for_port(port_dev);
+	if (!adev)
+		return NULL;
+
+	usb_acpi_get_connect_type(port_dev, adev->handle);
+
+	return adev;
+}
+
+static struct acpi_device *
+usb_acpi_find_companion_for_device(struct usb_device *udev)
+{
+	struct acpi_device *adev;
+	struct usb_port *port_dev;
+	struct usb_hub *hub;
+
+	if (!udev->parent) {
+		/*
+		 * root hub is only child (_ADR=0) under its parent, the HC.
+		 * sysdev pointer is the HC as seen from firmware.
+		 */
+		adev = ACPI_COMPANION(udev->bus->sysdev);
+		return acpi_find_child_device(adev, 0, false);
+	}
+
+	hub = usb_hub_to_struct_hub(udev->parent);
+	if (!hub)
+		return NULL;
+
+
+	/* Tunneled USB3 devices depend on USB4 Host Interface, set device link to it */
+	if (udev->speed >= USB_SPEED_SUPER &&
+	    udev->tunnel_mode != USB_LINK_NATIVE)
+		usb_acpi_add_usb4_devlink(udev);
+
+	/*
+	 * This is an embedded USB device connected to a port and such
+	 * devices share port's ACPI companion.
+	 */
+	port_dev = hub->ports[udev->portnum - 1];
+	return usb_acpi_get_companion_for_port(port_dev);
+}
+
+static struct acpi_device *usb_acpi_find_companion(struct device *dev)
+{
+	/*
+	 * The USB hierarchy like following:
+	 *
+	 * Device (EHC1)
+	 *	Device (HUBN)
+	 *		Device (PR01)
+	 *			Device (PR11)
+	 *			Device (PR12)
+	 *				Device (FN12)
+	 *				Device (FN13)
+	 *			Device (PR13)
+	 *			...
+	 * where HUBN is root hub, and PRNN are USB ports and devices
+	 * connected to them, and FNNN are individualk functions for
+	 * connected composite USB devices. PRNN and FNNN may contain
+	 * _CRS and other methods describing sideband resources for
+	 * the connected device.
+	 *
+	 * On the kernel side both root hub and embedded USB devices are
+	 * represented as instances of usb_device structure, and ports
+	 * are represented as usb_port structures, so the whole process
+	 * is split into 2 parts: finding companions for devices and
+	 * finding companions for ports.
+	 *
+	 * Note that we do not handle individual functions of composite
+	 * devices yet, for that we would need to assign companions to
+	 * devices corresponding to USB interfaces.
+	 */
+	if (is_usb_device(dev))
+		return usb_acpi_find_companion_for_device(to_usb_device(dev));
+	else if (is_usb_port(dev))
+		return usb_acpi_find_companion_for_port(to_usb_port(dev));
+
+	return NULL;
+}
+
+static bool usb_acpi_bus_match(struct device *dev)
+{
+	return is_usb_device(dev) || is_usb_port(dev);
+}
+
+static struct acpi_bus_type usb_acpi_bus = {
+	.name = "USB",
+	.match = usb_acpi_bus_match,
+	.find_companion = usb_acpi_find_companion,
+};
+
+int usb_acpi_register(void)
+{
+	if (dmi_check_system(intel_icl_broken_acpi)) {
+		pr_info("USB ACPI connection type broken.\n");
+		acpi_connection_type_broken = true;
+	}
+
+	return register_acpi_bus_type(&usb_acpi_bus);
+}
+
+void usb_acpi_unregister(void)
+{
+	unregister_acpi_bus_type(&usb_acpi_bus);
+}
diff --git a/rr-cache/3976fd0779d10fdf2e4f02e18d5ffac049c59a78/preimage b/rr-cache/3976fd0779d10fdf2e4f02e18d5ffac049c59a78/preimage
new file mode 100644
index 000000000000..24ac531fc025
--- /dev/null
+++ b/rr-cache/3976fd0779d10fdf2e4f02e18d5ffac049c59a78/preimage
@@ -0,0 +1,410 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * USB-ACPI glue code
+ *
+ * Copyright 2012 Red Hat <mjg@redhat.com>
+ */
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/acpi.h>
+#include <linux/pci.h>
+#include <linux/usb/hcd.h>
+#include <linux/dmi.h>
+
+#include "hub.h"
+
+/**
+ * usb_acpi_power_manageable - check whether usb port has
+ * acpi power resource.
+ * @hdev: USB device belonging to the usb hub
+ * @index: port index based zero
+ *
+ * Return true if the port has acpi power resource and false if no.
+ */
+bool usb_acpi_power_manageable(struct usb_device *hdev, int index)
+{
+	acpi_handle port_handle;
+	int port1 = index + 1;
+
+	port_handle = usb_get_hub_port_acpi_handle(hdev,
+		port1);
+	if (port_handle)
+		return acpi_bus_power_manageable(port_handle);
+	else
+		return false;
+}
+EXPORT_SYMBOL_GPL(usb_acpi_power_manageable);
+
+#define UUID_USB_CONTROLLER_DSM "ce2ee385-00e6-48cb-9f05-2edb927c4899"
+#define USB_DSM_DISABLE_U1_U2_FOR_PORT	5
+
+/**
+ * usb_acpi_port_lpm_incapable - check if lpm should be disabled for a port.
+ * @hdev: USB device belonging to the usb hub
+ * @index: zero based port index
+ *
+ * Some USB3 ports may not support USB3 link power management U1/U2 states
+ * due to different retimer setup. ACPI provides _DSM method which returns 0x01
+ * if U1 and U2 states should be disabled. Evaluate _DSM with:
+ * Arg0: UUID = ce2ee385-00e6-48cb-9f05-2edb927c4899
+ * Arg1: Revision ID = 0
+ * Arg2: Function Index = 5
+ * Arg3: (empty)
+ *
+ * Return 1 if USB3 port is LPM incapable, negative on error, otherwise 0
+ */
+
+int usb_acpi_port_lpm_incapable(struct usb_device *hdev, int index)
+{
+	union acpi_object *obj;
+	acpi_handle port_handle;
+	int port1 = index + 1;
+	guid_t guid;
+	int ret;
+
+	ret = guid_parse(UUID_USB_CONTROLLER_DSM, &guid);
+	if (ret)
+		return ret;
+
+	port_handle = usb_get_hub_port_acpi_handle(hdev, port1);
+	if (!port_handle) {
+		dev_dbg(&hdev->dev, "port-%d no acpi handle\n", port1);
+		return -ENODEV;
+	}
+
+	if (!acpi_check_dsm(port_handle, &guid, 0,
+			    BIT(USB_DSM_DISABLE_U1_U2_FOR_PORT))) {
+		dev_dbg(&hdev->dev, "port-%d no _DSM function %d\n",
+			port1, USB_DSM_DISABLE_U1_U2_FOR_PORT);
+		return -ENODEV;
+	}
+
+	obj = acpi_evaluate_dsm_typed(port_handle, &guid, 0,
+				      USB_DSM_DISABLE_U1_U2_FOR_PORT, NULL,
+				      ACPI_TYPE_INTEGER);
+	if (!obj) {
+		dev_dbg(&hdev->dev, "evaluate port-%d _DSM failed\n", port1);
+		return -EINVAL;
+	}
+
+	if (obj->integer.value == 0x01)
+		ret = 1;
+
+	ACPI_FREE(obj);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(usb_acpi_port_lpm_incapable);
+
+/**
+ * usb_acpi_set_power_state - control usb port's power via acpi power
+ * resource
+ * @hdev: USB device belonging to the usb hub
+ * @index: port index based zero
+ * @enable: power state expected to be set
+ *
+ * Notice to use usb_acpi_power_manageable() to check whether the usb port
+ * has acpi power resource before invoking this function.
+ *
+ * Returns 0 on success, else negative errno.
+ */
+int usb_acpi_set_power_state(struct usb_device *hdev, int index, bool enable)
+{
+	struct usb_hub *hub = usb_hub_to_struct_hub(hdev);
+	struct usb_port *port_dev;
+	acpi_handle port_handle;
+	unsigned char state;
+	int port1 = index + 1;
+	int error = -EINVAL;
+
+	if (!hub)
+		return -ENODEV;
+	port_dev = hub->ports[port1 - 1];
+
+	port_handle = (acpi_handle) usb_get_hub_port_acpi_handle(hdev, port1);
+	if (!port_handle)
+		return error;
+
+	if (enable)
+		state = ACPI_STATE_D0;
+	else
+		state = ACPI_STATE_D3_COLD;
+
+	error = acpi_bus_set_power(port_handle, state);
+	if (!error)
+		dev_dbg(&port_dev->dev, "acpi: power was set to %d\n", enable);
+	else
+		dev_dbg(&port_dev->dev, "acpi: power failed to be set\n");
+
+	return error;
+}
+EXPORT_SYMBOL_GPL(usb_acpi_set_power_state);
+
+<<<<<<<
+/**
+ * usb_acpi_add_usb4_devlink - add device link to USB4 Host Interface for tunneled USB3 devices
+ *
+ * @udev: Tunneled USB3 device connected to a roothub.
+ *
+ * Adds a device link between a tunneled USB3 device and the USB4 Host Interface
+ * device to ensure correct runtime PM suspend and resume order. This function
+ * should only be called for tunneled USB3 devices.
+ * The USB4 Host Interface this tunneled device depends on is found from the roothub
+ * port ACPI device specific data _DSD entry.
+ *
+ * Return: negative error code on failure, 0 otherwise
+ */
+static int usb_acpi_add_usb4_devlink(struct usb_device *udev)
+{
+	const struct device_link *link;
+	struct usb_port *port_dev;
+	struct usb_hub *hub;
+
+	if (!udev->parent || udev->parent->parent)
+		return 0;
+
+	hub = usb_hub_to_struct_hub(udev->parent);
+	port_dev = hub->ports[udev->portnum - 1];
+
+	struct fwnode_handle *nhi_fwnode __free(fwnode_handle) =
+		fwnode_find_reference(dev_fwnode(&port_dev->dev), "usb4-host-interface", 0);
+
+	if (IS_ERR(nhi_fwnode))
+		return 0;
+
+	link = device_link_add(&port_dev->child->dev, nhi_fwnode->dev,
+			       DL_FLAG_AUTOREMOVE_CONSUMER |
+			       DL_FLAG_RPM_ACTIVE |
+			       DL_FLAG_PM_RUNTIME);
+	if (!link) {
+		dev_err(&port_dev->dev, "Failed to created device link from %s to %s\n",
+			dev_name(&port_dev->child->dev), dev_name(nhi_fwnode->dev));
+		return -EINVAL;
+	}
+
+	dev_dbg(&port_dev->dev, "Created device link from %s to %s\n",
+		dev_name(&port_dev->child->dev), dev_name(nhi_fwnode->dev));
+
+	return 0;
+}
+=======
+static const struct dmi_system_id intel_icl_broken_acpi[] = {
+	{
+		.ident = "ICL RVP",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Ice Lake Client Platform"),
+		},
+	},
+
+	{ }
+};
+static bool acpi_connection_type_broken;
+>>>>>>>
+
+/*
+ * Private to usb-acpi, all the core needs to know is that
+ * port_dev->location is non-zero when it has been set by the firmware.
+ */
+#define USB_ACPI_LOCATION_VALID (1 << 31)
+
+static void
+usb_acpi_get_connect_type(struct usb_port *port_dev, acpi_handle *handle)
+{
+	enum usb_port_connect_type connect_type = USB_PORT_CONNECT_TYPE_UNKNOWN;
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	union acpi_object *upc = NULL;
+	struct acpi_pld_info *pld = NULL;
+	acpi_status status;
+
+	/* Work around unknown ACPI instruction error on ICL RVP BIOSes. */
+	if (acpi_connection_type_broken) {
+		port_dev->connect_type = USB_PORT_CONNECT_TYPE_UNKNOWN;
+		return;
+	}
+
+	/*
+	 * According to 9.14 in ACPI Spec 6.2. _PLD indicates whether usb port
+	 * is user visible and _UPC indicates whether it is connectable. If
+	 * the port was visible and connectable, it could be freely connected
+	 * and disconnected with USB devices. If no visible and connectable,
+	 * a usb device is directly hard-wired to the port. If no visible and
+	 * no connectable, the port would be not used.
+	 */
+
+	status = acpi_get_physical_device_location(handle, &pld);
+	if (ACPI_SUCCESS(status) && pld)
+		port_dev->location = USB_ACPI_LOCATION_VALID |
+			pld->group_token << 8 | pld->group_position;
+
+	status = acpi_evaluate_object(handle, "_UPC", NULL, &buffer);
+	if (ACPI_FAILURE(status))
+		goto out;
+
+	upc = buffer.pointer;
+	if (!upc || (upc->type != ACPI_TYPE_PACKAGE) || upc->package.count != 4)
+		goto out;
+
+	/* UPC states port is connectable */
+	if (upc->package.elements[0].integer.value)
+		if (!pld)
+			; /* keep connect_type as unknown */
+		else if (pld->user_visible)
+			connect_type = USB_PORT_CONNECT_TYPE_HOT_PLUG;
+		else
+			connect_type = USB_PORT_CONNECT_TYPE_HARD_WIRED;
+	else
+		connect_type = USB_PORT_NOT_USED;
+out:
+	port_dev->connect_type = connect_type;
+	kfree(upc);
+	ACPI_FREE(pld);
+}
+
+static struct acpi_device *
+usb_acpi_get_companion_for_port(struct usb_port *port_dev)
+{
+	struct usb_device *udev;
+	struct acpi_device *adev;
+	acpi_handle *parent_handle;
+	int port1;
+
+	/* Get the struct usb_device point of port's hub */
+	udev = to_usb_device(port_dev->dev.parent->parent);
+
+	/*
+	 * The root hub ports' parent is the root hub. The non-root-hub
+	 * ports' parent is the parent hub port which the hub is
+	 * connected to.
+	 */
+	if (!udev->parent) {
+		adev = ACPI_COMPANION(&udev->dev);
+		port1 = usb_hcd_find_raw_port_number(bus_to_hcd(udev->bus),
+						     port_dev->portnum);
+	} else {
+		parent_handle = usb_get_hub_port_acpi_handle(udev->parent,
+							     udev->portnum);
+		if (!parent_handle)
+			return NULL;
+
+		adev = acpi_fetch_acpi_dev(parent_handle);
+		port1 = port_dev->portnum;
+	}
+
+	return acpi_find_child_by_adr(adev, port1);
+}
+
+static struct acpi_device *
+usb_acpi_find_companion_for_port(struct usb_port *port_dev)
+{
+	struct acpi_device *adev;
+
+	adev = usb_acpi_get_companion_for_port(port_dev);
+	if (!adev)
+		return NULL;
+
+	usb_acpi_get_connect_type(port_dev, adev->handle);
+
+	return adev;
+}
+
+static struct acpi_device *
+usb_acpi_find_companion_for_device(struct usb_device *udev)
+{
+	struct acpi_device *adev;
+	struct usb_port *port_dev;
+	struct usb_hub *hub;
+
+	if (!udev->parent) {
+		/*
+		 * root hub is only child (_ADR=0) under its parent, the HC.
+		 * sysdev pointer is the HC as seen from firmware.
+		 */
+		adev = ACPI_COMPANION(udev->bus->sysdev);
+		return acpi_find_child_device(adev, 0, false);
+	}
+
+	hub = usb_hub_to_struct_hub(udev->parent);
+	if (!hub)
+		return NULL;
+
+
+	/* Tunneled USB3 devices depend on USB4 Host Interface, set device link to it */
+	if (udev->speed >= USB_SPEED_SUPER &&
+	    udev->tunnel_mode != USB_LINK_NATIVE)
+		usb_acpi_add_usb4_devlink(udev);
+
+	/*
+	 * This is an embedded USB device connected to a port and such
+	 * devices share port's ACPI companion.
+	 */
+	port_dev = hub->ports[udev->portnum - 1];
+	return usb_acpi_get_companion_for_port(port_dev);
+}
+
+static struct acpi_device *usb_acpi_find_companion(struct device *dev)
+{
+	/*
+	 * The USB hierarchy like following:
+	 *
+	 * Device (EHC1)
+	 *	Device (HUBN)
+	 *		Device (PR01)
+	 *			Device (PR11)
+	 *			Device (PR12)
+	 *				Device (FN12)
+	 *				Device (FN13)
+	 *			Device (PR13)
+	 *			...
+	 * where HUBN is root hub, and PRNN are USB ports and devices
+	 * connected to them, and FNNN are individualk functions for
+	 * connected composite USB devices. PRNN and FNNN may contain
+	 * _CRS and other methods describing sideband resources for
+	 * the connected device.
+	 *
+	 * On the kernel side both root hub and embedded USB devices are
+	 * represented as instances of usb_device structure, and ports
+	 * are represented as usb_port structures, so the whole process
+	 * is split into 2 parts: finding companions for devices and
+	 * finding companions for ports.
+	 *
+	 * Note that we do not handle individual functions of composite
+	 * devices yet, for that we would need to assign companions to
+	 * devices corresponding to USB interfaces.
+	 */
+	if (is_usb_device(dev))
+		return usb_acpi_find_companion_for_device(to_usb_device(dev));
+	else if (is_usb_port(dev))
+		return usb_acpi_find_companion_for_port(to_usb_port(dev));
+
+	return NULL;
+}
+
+static bool usb_acpi_bus_match(struct device *dev)
+{
+	return is_usb_device(dev) || is_usb_port(dev);
+}
+
+static struct acpi_bus_type usb_acpi_bus = {
+	.name = "USB",
+	.match = usb_acpi_bus_match,
+	.find_companion = usb_acpi_find_companion,
+};
+
+int usb_acpi_register(void)
+{
+	if (dmi_check_system(intel_icl_broken_acpi)) {
+		pr_info("USB ACPI connection type broken.\n");
+		acpi_connection_type_broken = true;
+	}
+
+	return register_acpi_bus_type(&usb_acpi_bus);
+}
+
+void usb_acpi_unregister(void)
+{
+	unregister_acpi_bus_type(&usb_acpi_bus);
+}
diff --git a/rr-cache/5c639b6a44944a6fab6878c590c4c42be4482011/postimage b/rr-cache/5c639b6a44944a6fab6878c590c4c42be4482011/postimage
new file mode 100644
index 000000000000..df86215361a1
--- /dev/null
+++ b/rr-cache/5c639b6a44944a6fab6878c590c4c42be4482011/postimage
@@ -0,0 +1,6649 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  libata-core.c - helper library for ATA
+ *
+ *  Copyright 2003-2004 Red Hat, Inc.  All rights reserved.
+ *  Copyright 2003-2004 Jeff Garzik
+ *
+ *  libata documentation is available via 'make {ps|pdf}docs',
+ *  as Documentation/driver-api/libata.rst
+ *
+ *  Hardware documentation available from http://www.t13.org/ and
+ *  http://www.sata-io.org/
+ *
+ *  Standards documents from:
+ *	http://www.t13.org (ATA standards, PCI DMA IDE spec)
+ *	http://www.t10.org (SCSI MMC - for ATAPI MMC)
+ *	http://www.sata-io.org (SATA)
+ *	http://www.compactflash.org (CF)
+ *	http://www.qic.org (QIC157 - Tape and DSC)
+ *	http://www.ce-ata.org (CE-ATA: not supported)
+ *
+ * libata is essentially a library of internal helper functions for
+ * low-level ATA host controller drivers.  As such, the API/ABI is
+ * likely to change as new drivers are added and updated.
+ * Do not depend on ABI/API stability.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/spinlock.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/time.h>
+#include <linux/interrupt.h>
+#include <linux/completion.h>
+#include <linux/suspend.h>
+#include <linux/workqueue.h>
+#include <linux/scatterlist.h>
+#include <linux/io.h>
+#include <linux/log2.h>
+#include <linux/slab.h>
+#include <linux/glob.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_host.h>
+#include <linux/libata.h>
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+#include <linux/cdrom.h>
+#include <linux/ratelimit.h>
+#include <linux/leds.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_device.h>
+#include <asm/setup.h>
+
+#define CREATE_TRACE_POINTS
+#include <trace/events/libata.h>
+
+#include "libata.h"
+#include "libata-transport.h"
+
+const struct ata_port_operations ata_base_port_ops = {
+	.prereset		= ata_std_prereset,
+	.postreset		= ata_std_postreset,
+	.error_handler		= ata_std_error_handler,
+	.sched_eh		= ata_std_sched_eh,
+	.end_eh			= ata_std_end_eh,
+};
+
+static unsigned int ata_dev_init_params(struct ata_device *dev,
+					u16 heads, u16 sectors);
+static unsigned int ata_dev_set_xfermode(struct ata_device *dev);
+static void ata_dev_xfermask(struct ata_device *dev);
+static unsigned int ata_dev_quirks(const struct ata_device *dev);
+
+static DEFINE_IDA(ata_ida);
+
+#ifdef CONFIG_ATA_FORCE
+struct ata_force_param {
+	const char	*name;
+	u8		cbl;
+	u8		spd_limit;
+	unsigned int	xfer_mask;
+	unsigned int	quirk_on;
+	unsigned int	quirk_off;
+	u16		lflags_on;
+	u16		lflags_off;
+};
+
+struct ata_force_ent {
+	int			port;
+	int			device;
+	struct ata_force_param	param;
+};
+
+static struct ata_force_ent *ata_force_tbl;
+static int ata_force_tbl_size;
+
+static char ata_force_param_buf[COMMAND_LINE_SIZE] __initdata;
+/* param_buf is thrown away after initialization, disallow read */
+module_param_string(force, ata_force_param_buf, sizeof(ata_force_param_buf), 0);
+MODULE_PARM_DESC(force, "Force ATA configurations including cable type, link speed and transfer mode (see Documentation/admin-guide/kernel-parameters.rst for details)");
+#endif
+
+static int atapi_enabled = 1;
+module_param(atapi_enabled, int, 0444);
+MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on [default])");
+
+static int atapi_dmadir = 0;
+module_param(atapi_dmadir, int, 0444);
+MODULE_PARM_DESC(atapi_dmadir, "Enable ATAPI DMADIR bridge support (0=off [default], 1=on)");
+
+int atapi_passthru16 = 1;
+module_param(atapi_passthru16, int, 0444);
+MODULE_PARM_DESC(atapi_passthru16, "Enable ATA_16 passthru for ATAPI devices (0=off, 1=on [default])");
+
+int libata_fua = 0;
+module_param_named(fua, libata_fua, int, 0444);
+MODULE_PARM_DESC(fua, "FUA support (0=off [default], 1=on)");
+
+static int ata_ignore_hpa;
+module_param_named(ignore_hpa, ata_ignore_hpa, int, 0644);
+MODULE_PARM_DESC(ignore_hpa, "Ignore HPA limit (0=keep BIOS limits, 1=ignore limits, using full disk)");
+
+static int libata_dma_mask = ATA_DMA_MASK_ATA|ATA_DMA_MASK_ATAPI|ATA_DMA_MASK_CFA;
+module_param_named(dma, libata_dma_mask, int, 0444);
+MODULE_PARM_DESC(dma, "DMA enable/disable (0x1==ATA, 0x2==ATAPI, 0x4==CF)");
+
+static int ata_probe_timeout;
+module_param(ata_probe_timeout, int, 0444);
+MODULE_PARM_DESC(ata_probe_timeout, "Set ATA probing timeout (seconds)");
+
+int libata_noacpi = 0;
+module_param_named(noacpi, libata_noacpi, int, 0444);
+MODULE_PARM_DESC(noacpi, "Disable the use of ACPI in probe/suspend/resume (0=off [default], 1=on)");
+
+int libata_allow_tpm = 0;
+module_param_named(allow_tpm, libata_allow_tpm, int, 0444);
+MODULE_PARM_DESC(allow_tpm, "Permit the use of TPM commands (0=off [default], 1=on)");
+
+static int atapi_an;
+module_param(atapi_an, int, 0444);
+MODULE_PARM_DESC(atapi_an, "Enable ATAPI AN media presence notification (0=0ff [default], 1=on)");
+
+MODULE_AUTHOR("Jeff Garzik");
+MODULE_DESCRIPTION("Library module for ATA devices");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+static inline bool ata_dev_print_info(const struct ata_device *dev)
+{
+	struct ata_eh_context *ehc = &dev->link->eh_context;
+
+	return ehc->i.flags & ATA_EHI_PRINTINFO;
+}
+
+/**
+ *	ata_link_next - link iteration helper
+ *	@link: the previous link, NULL to start
+ *	@ap: ATA port containing links to iterate
+ *	@mode: iteration mode, one of ATA_LITER_*
+ *
+ *	LOCKING:
+ *	Host lock or EH context.
+ *
+ *	RETURNS:
+ *	Pointer to the next link.
+ */
+struct ata_link *ata_link_next(struct ata_link *link, struct ata_port *ap,
+			       enum ata_link_iter_mode mode)
+{
+	BUG_ON(mode != ATA_LITER_EDGE &&
+	       mode != ATA_LITER_PMP_FIRST && mode != ATA_LITER_HOST_FIRST);
+
+	/* NULL link indicates start of iteration */
+	if (!link)
+		switch (mode) {
+		case ATA_LITER_EDGE:
+		case ATA_LITER_PMP_FIRST:
+			if (sata_pmp_attached(ap))
+				return ap->pmp_link;
+			fallthrough;
+		case ATA_LITER_HOST_FIRST:
+			return &ap->link;
+		}
+
+	/* we just iterated over the host link, what's next? */
+	if (link == &ap->link)
+		switch (mode) {
+		case ATA_LITER_HOST_FIRST:
+			if (sata_pmp_attached(ap))
+				return ap->pmp_link;
+			fallthrough;
+		case ATA_LITER_PMP_FIRST:
+			if (unlikely(ap->slave_link))
+				return ap->slave_link;
+			fallthrough;
+		case ATA_LITER_EDGE:
+			return NULL;
+		}
+
+	/* slave_link excludes PMP */
+	if (unlikely(link == ap->slave_link))
+		return NULL;
+
+	/* we were over a PMP link */
+	if (++link < ap->pmp_link + ap->nr_pmp_links)
+		return link;
+
+	if (mode == ATA_LITER_PMP_FIRST)
+		return &ap->link;
+
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(ata_link_next);
+
+/**
+ *	ata_dev_next - device iteration helper
+ *	@dev: the previous device, NULL to start
+ *	@link: ATA link containing devices to iterate
+ *	@mode: iteration mode, one of ATA_DITER_*
+ *
+ *	LOCKING:
+ *	Host lock or EH context.
+ *
+ *	RETURNS:
+ *	Pointer to the next device.
+ */
+struct ata_device *ata_dev_next(struct ata_device *dev, struct ata_link *link,
+				enum ata_dev_iter_mode mode)
+{
+	BUG_ON(mode != ATA_DITER_ENABLED && mode != ATA_DITER_ENABLED_REVERSE &&
+	       mode != ATA_DITER_ALL && mode != ATA_DITER_ALL_REVERSE);
+
+	/* NULL dev indicates start of iteration */
+	if (!dev)
+		switch (mode) {
+		case ATA_DITER_ENABLED:
+		case ATA_DITER_ALL:
+			dev = link->device;
+			goto check;
+		case ATA_DITER_ENABLED_REVERSE:
+		case ATA_DITER_ALL_REVERSE:
+			dev = link->device + ata_link_max_devices(link) - 1;
+			goto check;
+		}
+
+ next:
+	/* move to the next one */
+	switch (mode) {
+	case ATA_DITER_ENABLED:
+	case ATA_DITER_ALL:
+		if (++dev < link->device + ata_link_max_devices(link))
+			goto check;
+		return NULL;
+	case ATA_DITER_ENABLED_REVERSE:
+	case ATA_DITER_ALL_REVERSE:
+		if (--dev >= link->device)
+			goto check;
+		return NULL;
+	}
+
+ check:
+	if ((mode == ATA_DITER_ENABLED || mode == ATA_DITER_ENABLED_REVERSE) &&
+	    !ata_dev_enabled(dev))
+		goto next;
+	return dev;
+}
+EXPORT_SYMBOL_GPL(ata_dev_next);
+
+/**
+ *	ata_dev_phys_link - find physical link for a device
+ *	@dev: ATA device to look up physical link for
+ *
+ *	Look up physical link which @dev is attached to.  Note that
+ *	this is different from @dev->link only when @dev is on slave
+ *	link.  For all other cases, it's the same as @dev->link.
+ *
+ *	LOCKING:
+ *	Don't care.
+ *
+ *	RETURNS:
+ *	Pointer to the found physical link.
+ */
+struct ata_link *ata_dev_phys_link(struct ata_device *dev)
+{
+	struct ata_port *ap = dev->link->ap;
+
+	if (!ap->slave_link)
+		return dev->link;
+	if (!dev->devno)
+		return &ap->link;
+	return ap->slave_link;
+}
+
+#ifdef CONFIG_ATA_FORCE
+/**
+ *	ata_force_cbl - force cable type according to libata.force
+ *	@ap: ATA port of interest
+ *
+ *	Force cable type according to libata.force and whine about it.
+ *	The last entry which has matching port number is used, so it
+ *	can be specified as part of device force parameters.  For
+ *	example, both "a:40c,1.00:udma4" and "1.00:40c,udma4" have the
+ *	same effect.
+ *
+ *	LOCKING:
+ *	EH context.
+ */
+void ata_force_cbl(struct ata_port *ap)
+{
+	int i;
+
+	for (i = ata_force_tbl_size - 1; i >= 0; i--) {
+		const struct ata_force_ent *fe = &ata_force_tbl[i];
+
+		if (fe->port != -1 && fe->port != ap->print_id)
+			continue;
+
+		if (fe->param.cbl == ATA_CBL_NONE)
+			continue;
+
+		ap->cbl = fe->param.cbl;
+		ata_port_notice(ap, "FORCE: cable set to %s\n", fe->param.name);
+		return;
+	}
+}
+
+/**
+ *	ata_force_link_limits - force link limits according to libata.force
+ *	@link: ATA link of interest
+ *
+ *	Force link flags and SATA spd limit according to libata.force
+ *	and whine about it.  When only the port part is specified
+ *	(e.g. 1:), the limit applies to all links connected to both
+ *	the host link and all fan-out ports connected via PMP.  If the
+ *	device part is specified as 0 (e.g. 1.00:), it specifies the
+ *	first fan-out link not the host link.  Device number 15 always
+ *	points to the host link whether PMP is attached or not.  If the
+ *	controller has slave link, device number 16 points to it.
+ *
+ *	LOCKING:
+ *	EH context.
+ */
+static void ata_force_link_limits(struct ata_link *link)
+{
+	bool did_spd = false;
+	int linkno = link->pmp;
+	int i;
+
+	if (ata_is_host_link(link))
+		linkno += 15;
+
+	for (i = ata_force_tbl_size - 1; i >= 0; i--) {
+		const struct ata_force_ent *fe = &ata_force_tbl[i];
+
+		if (fe->port != -1 && fe->port != link->ap->print_id)
+			continue;
+
+		if (fe->device != -1 && fe->device != linkno)
+			continue;
+
+		/* only honor the first spd limit */
+		if (!did_spd && fe->param.spd_limit) {
+			link->hw_sata_spd_limit = (1 << fe->param.spd_limit) - 1;
+			ata_link_notice(link, "FORCE: PHY spd limit set to %s\n",
+					fe->param.name);
+			did_spd = true;
+		}
+
+		/* let lflags stack */
+		if (fe->param.lflags_on) {
+			link->flags |= fe->param.lflags_on;
+			ata_link_notice(link,
+					"FORCE: link flag 0x%x forced -> 0x%x\n",
+					fe->param.lflags_on, link->flags);
+		}
+		if (fe->param.lflags_off) {
+			link->flags &= ~fe->param.lflags_off;
+			ata_link_notice(link,
+				"FORCE: link flag 0x%x cleared -> 0x%x\n",
+				fe->param.lflags_off, link->flags);
+		}
+	}
+}
+
+/**
+ *	ata_force_xfermask - force xfermask according to libata.force
+ *	@dev: ATA device of interest
+ *
+ *	Force xfer_mask according to libata.force and whine about it.
+ *	For consistency with link selection, device number 15 selects
+ *	the first device connected to the host link.
+ *
+ *	LOCKING:
+ *	EH context.
+ */
+static void ata_force_xfermask(struct ata_device *dev)
+{
+	int devno = dev->link->pmp + dev->devno;
+	int alt_devno = devno;
+	int i;
+
+	/* allow n.15/16 for devices attached to host port */
+	if (ata_is_host_link(dev->link))
+		alt_devno += 15;
+
+	for (i = ata_force_tbl_size - 1; i >= 0; i--) {
+		const struct ata_force_ent *fe = &ata_force_tbl[i];
+		unsigned int pio_mask, mwdma_mask, udma_mask;
+
+		if (fe->port != -1 && fe->port != dev->link->ap->print_id)
+			continue;
+
+		if (fe->device != -1 && fe->device != devno &&
+		    fe->device != alt_devno)
+			continue;
+
+		if (!fe->param.xfer_mask)
+			continue;
+
+		ata_unpack_xfermask(fe->param.xfer_mask,
+				    &pio_mask, &mwdma_mask, &udma_mask);
+		if (udma_mask)
+			dev->udma_mask = udma_mask;
+		else if (mwdma_mask) {
+			dev->udma_mask = 0;
+			dev->mwdma_mask = mwdma_mask;
+		} else {
+			dev->udma_mask = 0;
+			dev->mwdma_mask = 0;
+			dev->pio_mask = pio_mask;
+		}
+
+		ata_dev_notice(dev, "FORCE: xfer_mask set to %s\n",
+			       fe->param.name);
+		return;
+	}
+}
+
+/**
+ *	ata_force_quirks - force quirks according to libata.force
+ *	@dev: ATA device of interest
+ *
+ *	Force quirks according to libata.force and whine about it.
+ *	For consistency with link selection, device number 15 selects
+ *	the first device connected to the host link.
+ *
+ *	LOCKING:
+ *	EH context.
+ */
+static void ata_force_quirks(struct ata_device *dev)
+{
+	int devno = dev->link->pmp + dev->devno;
+	int alt_devno = devno;
+	int i;
+
+	/* allow n.15/16 for devices attached to host port */
+	if (ata_is_host_link(dev->link))
+		alt_devno += 15;
+
+	for (i = 0; i < ata_force_tbl_size; i++) {
+		const struct ata_force_ent *fe = &ata_force_tbl[i];
+
+		if (fe->port != -1 && fe->port != dev->link->ap->print_id)
+			continue;
+
+		if (fe->device != -1 && fe->device != devno &&
+		    fe->device != alt_devno)
+			continue;
+
+		if (!(~dev->quirks & fe->param.quirk_on) &&
+		    !(dev->quirks & fe->param.quirk_off))
+			continue;
+
+		dev->quirks |= fe->param.quirk_on;
+		dev->quirks &= ~fe->param.quirk_off;
+
+		ata_dev_notice(dev, "FORCE: modified (%s)\n",
+			       fe->param.name);
+	}
+}
+#else
+static inline void ata_force_link_limits(struct ata_link *link) { }
+static inline void ata_force_xfermask(struct ata_device *dev) { }
+static inline void ata_force_quirks(struct ata_device *dev) { }
+#endif
+
+/**
+ *	atapi_cmd_type - Determine ATAPI command type from SCSI opcode
+ *	@opcode: SCSI opcode
+ *
+ *	Determine ATAPI command type from @opcode.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	ATAPI_{READ|WRITE|READ_CD|PASS_THRU|MISC}
+ */
+int atapi_cmd_type(u8 opcode)
+{
+	switch (opcode) {
+	case GPCMD_READ_10:
+	case GPCMD_READ_12:
+		return ATAPI_READ;
+
+	case GPCMD_WRITE_10:
+	case GPCMD_WRITE_12:
+	case GPCMD_WRITE_AND_VERIFY_10:
+		return ATAPI_WRITE;
+
+	case GPCMD_READ_CD:
+	case GPCMD_READ_CD_MSF:
+		return ATAPI_READ_CD;
+
+	case ATA_16:
+	case ATA_12:
+		if (atapi_passthru16)
+			return ATAPI_PASS_THRU;
+		fallthrough;
+	default:
+		return ATAPI_MISC;
+	}
+}
+EXPORT_SYMBOL_GPL(atapi_cmd_type);
+
+static const u8 ata_rw_cmds[] = {
+	/* pio multi */
+	ATA_CMD_READ_MULTI,
+	ATA_CMD_WRITE_MULTI,
+	ATA_CMD_READ_MULTI_EXT,
+	ATA_CMD_WRITE_MULTI_EXT,
+	0,
+	0,
+	0,
+	0,
+	/* pio */
+	ATA_CMD_PIO_READ,
+	ATA_CMD_PIO_WRITE,
+	ATA_CMD_PIO_READ_EXT,
+	ATA_CMD_PIO_WRITE_EXT,
+	0,
+	0,
+	0,
+	0,
+	/* dma */
+	ATA_CMD_READ,
+	ATA_CMD_WRITE,
+	ATA_CMD_READ_EXT,
+	ATA_CMD_WRITE_EXT,
+	0,
+	0,
+	0,
+	ATA_CMD_WRITE_FUA_EXT
+};
+
+/**
+ *	ata_set_rwcmd_protocol - set taskfile r/w command and protocol
+ *	@dev: target device for the taskfile
+ *	@tf: taskfile to examine and configure
+ *
+ *	Examine the device configuration and tf->flags to determine
+ *	the proper read/write command and protocol to use for @tf.
+ *
+ *	LOCKING:
+ *	caller.
+ */
+static bool ata_set_rwcmd_protocol(struct ata_device *dev,
+				   struct ata_taskfile *tf)
+{
+	u8 cmd;
+
+	int index, fua, lba48, write;
+
+	fua = (tf->flags & ATA_TFLAG_FUA) ? 4 : 0;
+	lba48 = (tf->flags & ATA_TFLAG_LBA48) ? 2 : 0;
+	write = (tf->flags & ATA_TFLAG_WRITE) ? 1 : 0;
+
+	if (dev->flags & ATA_DFLAG_PIO) {
+		tf->protocol = ATA_PROT_PIO;
+		index = dev->multi_count ? 0 : 8;
+	} else if (lba48 && (dev->link->ap->flags & ATA_FLAG_PIO_LBA48)) {
+		/* Unable to use DMA due to host limitation */
+		tf->protocol = ATA_PROT_PIO;
+		index = dev->multi_count ? 0 : 8;
+	} else {
+		tf->protocol = ATA_PROT_DMA;
+		index = 16;
+	}
+
+	cmd = ata_rw_cmds[index + fua + lba48 + write];
+	if (!cmd)
+		return false;
+
+	tf->command = cmd;
+
+	return true;
+}
+
+/**
+ *	ata_tf_read_block - Read block address from ATA taskfile
+ *	@tf: ATA taskfile of interest
+ *	@dev: ATA device @tf belongs to
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	Read block address from @tf.  This function can handle all
+ *	three address formats - LBA, LBA48 and CHS.  tf->protocol and
+ *	flags select the address format to use.
+ *
+ *	RETURNS:
+ *	Block address read from @tf.
+ */
+u64 ata_tf_read_block(const struct ata_taskfile *tf, struct ata_device *dev)
+{
+	u64 block = 0;
+
+	if (tf->flags & ATA_TFLAG_LBA) {
+		if (tf->flags & ATA_TFLAG_LBA48) {
+			block |= (u64)tf->hob_lbah << 40;
+			block |= (u64)tf->hob_lbam << 32;
+			block |= (u64)tf->hob_lbal << 24;
+		} else
+			block |= (tf->device & 0xf) << 24;
+
+		block |= tf->lbah << 16;
+		block |= tf->lbam << 8;
+		block |= tf->lbal;
+	} else {
+		u32 cyl, head, sect;
+
+		cyl = tf->lbam | (tf->lbah << 8);
+		head = tf->device & 0xf;
+		sect = tf->lbal;
+
+		if (!sect) {
+			ata_dev_warn(dev,
+				     "device reported invalid CHS sector 0\n");
+			return U64_MAX;
+		}
+
+		block = (cyl * dev->heads + head) * dev->sectors + sect - 1;
+	}
+
+	return block;
+}
+
+/*
+ * Set a taskfile command duration limit index.
+ */
+static inline void ata_set_tf_cdl(struct ata_queued_cmd *qc, int cdl)
+{
+	struct ata_taskfile *tf = &qc->tf;
+
+	if (tf->protocol == ATA_PROT_NCQ)
+		tf->auxiliary |= cdl;
+	else
+		tf->feature |= cdl;
+
+	/*
+	 * Mark this command as having a CDL and request the result
+	 * task file so that we can inspect the sense data available
+	 * bit on completion.
+	 */
+	qc->flags |= ATA_QCFLAG_HAS_CDL | ATA_QCFLAG_RESULT_TF;
+}
+
+/**
+ *	ata_build_rw_tf - Build ATA taskfile for given read/write request
+ *	@qc: Metadata associated with the taskfile to build
+ *	@block: Block address
+ *	@n_block: Number of blocks
+ *	@tf_flags: RW/FUA etc...
+ *	@cdl: Command duration limit index
+ *	@class: IO priority class
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	Build ATA taskfile for the command @qc for read/write request described
+ *	by @block, @n_block, @tf_flags and @class.
+ *
+ *	RETURNS:
+ *
+ *	0 on success, -ERANGE if the request is too large for @dev,
+ *	-EINVAL if the request is invalid.
+ */
+int ata_build_rw_tf(struct ata_queued_cmd *qc, u64 block, u32 n_block,
+		    unsigned int tf_flags, int cdl, int class)
+{
+	struct ata_taskfile *tf = &qc->tf;
+	struct ata_device *dev = qc->dev;
+
+	tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
+	tf->flags |= tf_flags;
+
+	if (ata_ncq_enabled(dev)) {
+		/* yay, NCQ */
+		if (!lba_48_ok(block, n_block))
+			return -ERANGE;
+
+		tf->protocol = ATA_PROT_NCQ;
+		tf->flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
+
+		if (tf->flags & ATA_TFLAG_WRITE)
+			tf->command = ATA_CMD_FPDMA_WRITE;
+		else
+			tf->command = ATA_CMD_FPDMA_READ;
+
+		tf->nsect = qc->hw_tag << 3;
+		tf->hob_feature = (n_block >> 8) & 0xff;
+		tf->feature = n_block & 0xff;
+
+		tf->hob_lbah = (block >> 40) & 0xff;
+		tf->hob_lbam = (block >> 32) & 0xff;
+		tf->hob_lbal = (block >> 24) & 0xff;
+		tf->lbah = (block >> 16) & 0xff;
+		tf->lbam = (block >> 8) & 0xff;
+		tf->lbal = block & 0xff;
+
+		tf->device = ATA_LBA;
+		if (tf->flags & ATA_TFLAG_FUA)
+			tf->device |= 1 << 7;
+
+		if (dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLED &&
+		    class == IOPRIO_CLASS_RT)
+			tf->hob_nsect |= ATA_PRIO_HIGH << ATA_SHIFT_PRIO;
+
+		if ((dev->flags & ATA_DFLAG_CDL_ENABLED) && cdl)
+			ata_set_tf_cdl(qc, cdl);
+
+	} else if (dev->flags & ATA_DFLAG_LBA) {
+		tf->flags |= ATA_TFLAG_LBA;
+
+		if ((dev->flags & ATA_DFLAG_CDL_ENABLED) && cdl)
+			ata_set_tf_cdl(qc, cdl);
+
+		/* Both FUA writes and a CDL index require 48-bit commands */
+		if (!(tf->flags & ATA_TFLAG_FUA) &&
+		    !(qc->flags & ATA_QCFLAG_HAS_CDL) &&
+		    lba_28_ok(block, n_block)) {
+			/* use LBA28 */
+			tf->device |= (block >> 24) & 0xf;
+		} else if (lba_48_ok(block, n_block)) {
+			if (!(dev->flags & ATA_DFLAG_LBA48))
+				return -ERANGE;
+
+			/* use LBA48 */
+			tf->flags |= ATA_TFLAG_LBA48;
+
+			tf->hob_nsect = (n_block >> 8) & 0xff;
+
+			tf->hob_lbah = (block >> 40) & 0xff;
+			tf->hob_lbam = (block >> 32) & 0xff;
+			tf->hob_lbal = (block >> 24) & 0xff;
+		} else {
+			/* request too large even for LBA48 */
+			return -ERANGE;
+		}
+
+		if (unlikely(!ata_set_rwcmd_protocol(dev, tf)))
+			return -EINVAL;
+
+		tf->nsect = n_block & 0xff;
+
+		tf->lbah = (block >> 16) & 0xff;
+		tf->lbam = (block >> 8) & 0xff;
+		tf->lbal = block & 0xff;
+
+		tf->device |= ATA_LBA;
+	} else {
+		/* CHS */
+		u32 sect, head, cyl, track;
+
+		/* The request -may- be too large for CHS addressing. */
+		if (!lba_28_ok(block, n_block))
+			return -ERANGE;
+
+		if (unlikely(!ata_set_rwcmd_protocol(dev, tf)))
+			return -EINVAL;
+
+		/* Convert LBA to CHS */
+		track = (u32)block / dev->sectors;
+		cyl   = track / dev->heads;
+		head  = track % dev->heads;
+		sect  = (u32)block % dev->sectors + 1;
+
+		/* Check whether the converted CHS can fit.
+		   Cylinder: 0-65535
+		   Head: 0-15
+		   Sector: 1-255*/
+		if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect))
+			return -ERANGE;
+
+		tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */
+		tf->lbal = sect;
+		tf->lbam = cyl;
+		tf->lbah = cyl >> 8;
+		tf->device |= head;
+	}
+
+	return 0;
+}
+
+/**
+ *	ata_pack_xfermask - Pack pio, mwdma and udma masks into xfer_mask
+ *	@pio_mask: pio_mask
+ *	@mwdma_mask: mwdma_mask
+ *	@udma_mask: udma_mask
+ *
+ *	Pack @pio_mask, @mwdma_mask and @udma_mask into a single
+ *	unsigned int xfer_mask.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Packed xfer_mask.
+ */
+unsigned int ata_pack_xfermask(unsigned int pio_mask,
+			       unsigned int mwdma_mask,
+			       unsigned int udma_mask)
+{
+	return	((pio_mask << ATA_SHIFT_PIO) & ATA_MASK_PIO) |
+		((mwdma_mask << ATA_SHIFT_MWDMA) & ATA_MASK_MWDMA) |
+		((udma_mask << ATA_SHIFT_UDMA) & ATA_MASK_UDMA);
+}
+EXPORT_SYMBOL_GPL(ata_pack_xfermask);
+
+/**
+ *	ata_unpack_xfermask - Unpack xfer_mask into pio, mwdma and udma masks
+ *	@xfer_mask: xfer_mask to unpack
+ *	@pio_mask: resulting pio_mask
+ *	@mwdma_mask: resulting mwdma_mask
+ *	@udma_mask: resulting udma_mask
+ *
+ *	Unpack @xfer_mask into @pio_mask, @mwdma_mask and @udma_mask.
+ *	Any NULL destination masks will be ignored.
+ */
+void ata_unpack_xfermask(unsigned int xfer_mask, unsigned int *pio_mask,
+			 unsigned int *mwdma_mask, unsigned int *udma_mask)
+{
+	if (pio_mask)
+		*pio_mask = (xfer_mask & ATA_MASK_PIO) >> ATA_SHIFT_PIO;
+	if (mwdma_mask)
+		*mwdma_mask = (xfer_mask & ATA_MASK_MWDMA) >> ATA_SHIFT_MWDMA;
+	if (udma_mask)
+		*udma_mask = (xfer_mask & ATA_MASK_UDMA) >> ATA_SHIFT_UDMA;
+}
+
+static const struct ata_xfer_ent {
+	int shift, bits;
+	u8 base;
+} ata_xfer_tbl[] = {
+	{ ATA_SHIFT_PIO, ATA_NR_PIO_MODES, XFER_PIO_0 },
+	{ ATA_SHIFT_MWDMA, ATA_NR_MWDMA_MODES, XFER_MW_DMA_0 },
+	{ ATA_SHIFT_UDMA, ATA_NR_UDMA_MODES, XFER_UDMA_0 },
+	{ -1, },
+};
+
+/**
+ *	ata_xfer_mask2mode - Find matching XFER_* for the given xfer_mask
+ *	@xfer_mask: xfer_mask of interest
+ *
+ *	Return matching XFER_* value for @xfer_mask.  Only the highest
+ *	bit of @xfer_mask is considered.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Matching XFER_* value, 0xff if no match found.
+ */
+u8 ata_xfer_mask2mode(unsigned int xfer_mask)
+{
+	int highbit = fls(xfer_mask) - 1;
+	const struct ata_xfer_ent *ent;
+
+	for (ent = ata_xfer_tbl; ent->shift >= 0; ent++)
+		if (highbit >= ent->shift && highbit < ent->shift + ent->bits)
+			return ent->base + highbit - ent->shift;
+	return 0xff;
+}
+EXPORT_SYMBOL_GPL(ata_xfer_mask2mode);
+
+/**
+ *	ata_xfer_mode2mask - Find matching xfer_mask for XFER_*
+ *	@xfer_mode: XFER_* of interest
+ *
+ *	Return matching xfer_mask for @xfer_mode.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Matching xfer_mask, 0 if no match found.
+ */
+unsigned int ata_xfer_mode2mask(u8 xfer_mode)
+{
+	const struct ata_xfer_ent *ent;
+
+	for (ent = ata_xfer_tbl; ent->shift >= 0; ent++)
+		if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits)
+			return ((2 << (ent->shift + xfer_mode - ent->base)) - 1)
+				& ~((1 << ent->shift) - 1);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ata_xfer_mode2mask);
+
+/**
+ *	ata_xfer_mode2shift - Find matching xfer_shift for XFER_*
+ *	@xfer_mode: XFER_* of interest
+ *
+ *	Return matching xfer_shift for @xfer_mode.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Matching xfer_shift, -1 if no match found.
+ */
+int ata_xfer_mode2shift(u8 xfer_mode)
+{
+	const struct ata_xfer_ent *ent;
+
+	for (ent = ata_xfer_tbl; ent->shift >= 0; ent++)
+		if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits)
+			return ent->shift;
+	return -1;
+}
+EXPORT_SYMBOL_GPL(ata_xfer_mode2shift);
+
+/**
+ *	ata_mode_string - convert xfer_mask to string
+ *	@xfer_mask: mask of bits supported; only highest bit counts.
+ *
+ *	Determine string which represents the highest speed
+ *	(highest bit in @modemask).
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Constant C string representing highest speed listed in
+ *	@mode_mask, or the constant C string "<n/a>".
+ */
+const char *ata_mode_string(unsigned int xfer_mask)
+{
+	static const char * const xfer_mode_str[] = {
+		"PIO0",
+		"PIO1",
+		"PIO2",
+		"PIO3",
+		"PIO4",
+		"PIO5",
+		"PIO6",
+		"MWDMA0",
+		"MWDMA1",
+		"MWDMA2",
+		"MWDMA3",
+		"MWDMA4",
+		"UDMA/16",
+		"UDMA/25",
+		"UDMA/33",
+		"UDMA/44",
+		"UDMA/66",
+		"UDMA/100",
+		"UDMA/133",
+		"UDMA7",
+	};
+	int highbit;
+
+	highbit = fls(xfer_mask) - 1;
+	if (highbit >= 0 && highbit < ARRAY_SIZE(xfer_mode_str))
+		return xfer_mode_str[highbit];
+	return "<n/a>";
+}
+EXPORT_SYMBOL_GPL(ata_mode_string);
+
+const char *sata_spd_string(unsigned int spd)
+{
+	static const char * const spd_str[] = {
+		"1.5 Gbps",
+		"3.0 Gbps",
+		"6.0 Gbps",
+	};
+
+	if (spd == 0 || (spd - 1) >= ARRAY_SIZE(spd_str))
+		return "<unknown>";
+	return spd_str[spd - 1];
+}
+
+/**
+ *	ata_dev_classify - determine device type based on ATA-spec signature
+ *	@tf: ATA taskfile register set for device to be identified
+ *
+ *	Determine from taskfile register contents whether a device is
+ *	ATA or ATAPI, as per "Signature and persistence" section
+ *	of ATA/PI spec (volume 1, sect 5.14).
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP,
+ *	%ATA_DEV_ZAC, or %ATA_DEV_UNKNOWN the event of failure.
+ */
+unsigned int ata_dev_classify(const struct ata_taskfile *tf)
+{
+	/* Apple's open source Darwin code hints that some devices only
+	 * put a proper signature into the LBA mid/high registers,
+	 * So, we only check those.  It's sufficient for uniqueness.
+	 *
+	 * ATA/ATAPI-7 (d1532v1r1: Feb. 19, 2003) specified separate
+	 * signatures for ATA and ATAPI devices attached on SerialATA,
+	 * 0x3c/0xc3 and 0x69/0x96 respectively.  However, SerialATA
+	 * spec has never mentioned about using different signatures
+	 * for ATA/ATAPI devices.  Then, Serial ATA II: Port
+	 * Multiplier specification began to use 0x69/0x96 to identify
+	 * port multpliers and 0x3c/0xc3 to identify SEMB device.
+	 * ATA/ATAPI-7 dropped descriptions about 0x3c/0xc3 and
+	 * 0x69/0x96 shortly and described them as reserved for
+	 * SerialATA.
+	 *
+	 * We follow the current spec and consider that 0x69/0x96
+	 * identifies a port multiplier and 0x3c/0xc3 a SEMB device.
+	 * Unfortunately, WDC WD1600JS-62MHB5 (a hard drive) reports
+	 * SEMB signature.  This is worked around in
+	 * ata_dev_read_id().
+	 */
+	if (tf->lbam == 0 && tf->lbah == 0)
+		return ATA_DEV_ATA;
+
+	if (tf->lbam == 0x14 && tf->lbah == 0xeb)
+		return ATA_DEV_ATAPI;
+
+	if (tf->lbam == 0x69 && tf->lbah == 0x96)
+		return ATA_DEV_PMP;
+
+	if (tf->lbam == 0x3c && tf->lbah == 0xc3)
+		return ATA_DEV_SEMB;
+
+	if (tf->lbam == 0xcd && tf->lbah == 0xab)
+		return ATA_DEV_ZAC;
+
+	return ATA_DEV_UNKNOWN;
+}
+EXPORT_SYMBOL_GPL(ata_dev_classify);
+
+/**
+ *	ata_id_string - Convert IDENTIFY DEVICE page into string
+ *	@id: IDENTIFY DEVICE results we will examine
+ *	@s: string into which data is output
+ *	@ofs: offset into identify device page
+ *	@len: length of string to return. must be an even number.
+ *
+ *	The strings in the IDENTIFY DEVICE page are broken up into
+ *	16-bit chunks.  Run through the string, and output each
+ *	8-bit chunk linearly, regardless of platform.
+ *
+ *	LOCKING:
+ *	caller.
+ */
+
+void ata_id_string(const u16 *id, unsigned char *s,
+		   unsigned int ofs, unsigned int len)
+{
+	unsigned int c;
+
+	BUG_ON(len & 1);
+
+	while (len > 0) {
+		c = id[ofs] >> 8;
+		*s = c;
+		s++;
+
+		c = id[ofs] & 0xff;
+		*s = c;
+		s++;
+
+		ofs++;
+		len -= 2;
+	}
+}
+EXPORT_SYMBOL_GPL(ata_id_string);
+
+/**
+ *	ata_id_c_string - Convert IDENTIFY DEVICE page into C string
+ *	@id: IDENTIFY DEVICE results we will examine
+ *	@s: string into which data is output
+ *	@ofs: offset into identify device page
+ *	@len: length of string to return. must be an odd number.
+ *
+ *	This function is identical to ata_id_string except that it
+ *	trims trailing spaces and terminates the resulting string with
+ *	null.  @len must be actual maximum length (even number) + 1.
+ *
+ *	LOCKING:
+ *	caller.
+ */
+void ata_id_c_string(const u16 *id, unsigned char *s,
+		     unsigned int ofs, unsigned int len)
+{
+	unsigned char *p;
+
+	ata_id_string(id, s, ofs, len - 1);
+
+	p = s + strnlen(s, len - 1);
+	while (p > s && p[-1] == ' ')
+		p--;
+	*p = '\0';
+}
+EXPORT_SYMBOL_GPL(ata_id_c_string);
+
+static u64 ata_id_n_sectors(const u16 *id)
+{
+	if (ata_id_has_lba(id)) {
+		if (ata_id_has_lba48(id))
+			return ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
+
+		return ata_id_u32(id, ATA_ID_LBA_CAPACITY);
+	}
+
+	if (ata_id_current_chs_valid(id))
+		return (u32)id[ATA_ID_CUR_CYLS] * (u32)id[ATA_ID_CUR_HEADS] *
+		       (u32)id[ATA_ID_CUR_SECTORS];
+
+	return (u32)id[ATA_ID_CYLS] * (u32)id[ATA_ID_HEADS] *
+	       (u32)id[ATA_ID_SECTORS];
+}
+
+u64 ata_tf_to_lba48(const struct ata_taskfile *tf)
+{
+	u64 sectors = 0;
+
+	sectors |= ((u64)(tf->hob_lbah & 0xff)) << 40;
+	sectors |= ((u64)(tf->hob_lbam & 0xff)) << 32;
+	sectors |= ((u64)(tf->hob_lbal & 0xff)) << 24;
+	sectors |= (tf->lbah & 0xff) << 16;
+	sectors |= (tf->lbam & 0xff) << 8;
+	sectors |= (tf->lbal & 0xff);
+
+	return sectors;
+}
+
+u64 ata_tf_to_lba(const struct ata_taskfile *tf)
+{
+	u64 sectors = 0;
+
+	sectors |= (tf->device & 0x0f) << 24;
+	sectors |= (tf->lbah & 0xff) << 16;
+	sectors |= (tf->lbam & 0xff) << 8;
+	sectors |= (tf->lbal & 0xff);
+
+	return sectors;
+}
+
+/**
+ *	ata_read_native_max_address - Read native max address
+ *	@dev: target device
+ *	@max_sectors: out parameter for the result native max address
+ *
+ *	Perform an LBA48 or LBA28 native size query upon the device in
+ *	question.
+ *
+ *	RETURNS:
+ *	0 on success, -EACCES if command is aborted by the drive.
+ *	-EIO on other errors.
+ */
+static int ata_read_native_max_address(struct ata_device *dev, u64 *max_sectors)
+{
+	unsigned int err_mask;
+	struct ata_taskfile tf;
+	int lba48 = ata_id_has_lba48(dev->id);
+
+	ata_tf_init(dev, &tf);
+
+	/* always clear all address registers */
+	tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
+
+	if (lba48) {
+		tf.command = ATA_CMD_READ_NATIVE_MAX_EXT;
+		tf.flags |= ATA_TFLAG_LBA48;
+	} else
+		tf.command = ATA_CMD_READ_NATIVE_MAX;
+
+	tf.protocol = ATA_PROT_NODATA;
+	tf.device |= ATA_LBA;
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+	if (err_mask) {
+		ata_dev_warn(dev,
+			     "failed to read native max address (err_mask=0x%x)\n",
+			     err_mask);
+		if (err_mask == AC_ERR_DEV && (tf.error & ATA_ABORTED))
+			return -EACCES;
+		return -EIO;
+	}
+
+	if (lba48)
+		*max_sectors = ata_tf_to_lba48(&tf) + 1;
+	else
+		*max_sectors = ata_tf_to_lba(&tf) + 1;
+	if (dev->quirks & ATA_QUIRK_HPA_SIZE)
+		(*max_sectors)--;
+	return 0;
+}
+
+/**
+ *	ata_set_max_sectors - Set max sectors
+ *	@dev: target device
+ *	@new_sectors: new max sectors value to set for the device
+ *
+ *	Set max sectors of @dev to @new_sectors.
+ *
+ *	RETURNS:
+ *	0 on success, -EACCES if command is aborted or denied (due to
+ *	previous non-volatile SET_MAX) by the drive.  -EIO on other
+ *	errors.
+ */
+static int ata_set_max_sectors(struct ata_device *dev, u64 new_sectors)
+{
+	unsigned int err_mask;
+	struct ata_taskfile tf;
+	int lba48 = ata_id_has_lba48(dev->id);
+
+	new_sectors--;
+
+	ata_tf_init(dev, &tf);
+
+	tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
+
+	if (lba48) {
+		tf.command = ATA_CMD_SET_MAX_EXT;
+		tf.flags |= ATA_TFLAG_LBA48;
+
+		tf.hob_lbal = (new_sectors >> 24) & 0xff;
+		tf.hob_lbam = (new_sectors >> 32) & 0xff;
+		tf.hob_lbah = (new_sectors >> 40) & 0xff;
+	} else {
+		tf.command = ATA_CMD_SET_MAX;
+
+		tf.device |= (new_sectors >> 24) & 0xf;
+	}
+
+	tf.protocol = ATA_PROT_NODATA;
+	tf.device |= ATA_LBA;
+
+	tf.lbal = (new_sectors >> 0) & 0xff;
+	tf.lbam = (new_sectors >> 8) & 0xff;
+	tf.lbah = (new_sectors >> 16) & 0xff;
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+	if (err_mask) {
+		ata_dev_warn(dev,
+			     "failed to set max address (err_mask=0x%x)\n",
+			     err_mask);
+		if (err_mask == AC_ERR_DEV &&
+		    (tf.error & (ATA_ABORTED | ATA_IDNF)))
+			return -EACCES;
+		return -EIO;
+	}
+
+	return 0;
+}
+
+/**
+ *	ata_hpa_resize		-	Resize a device with an HPA set
+ *	@dev: Device to resize
+ *
+ *	Read the size of an LBA28 or LBA48 disk with HPA features and resize
+ *	it if required to the full size of the media. The caller must check
+ *	the drive has the HPA feature set enabled.
+ *
+ *	RETURNS:
+ *	0 on success, -errno on failure.
+ */
+static int ata_hpa_resize(struct ata_device *dev)
+{
+	bool print_info = ata_dev_print_info(dev);
+	bool unlock_hpa = ata_ignore_hpa || dev->flags & ATA_DFLAG_UNLOCK_HPA;
+	u64 sectors = ata_id_n_sectors(dev->id);
+	u64 native_sectors;
+	int rc;
+
+	/* do we need to do it? */
+	if ((dev->class != ATA_DEV_ATA && dev->class != ATA_DEV_ZAC) ||
+	    !ata_id_has_lba(dev->id) || !ata_id_hpa_enabled(dev->id) ||
+	    (dev->quirks & ATA_QUIRK_BROKEN_HPA))
+		return 0;
+
+	/* read native max address */
+	rc = ata_read_native_max_address(dev, &native_sectors);
+	if (rc) {
+		/* If device aborted the command or HPA isn't going to
+		 * be unlocked, skip HPA resizing.
+		 */
+		if (rc == -EACCES || !unlock_hpa) {
+			ata_dev_warn(dev,
+				     "HPA support seems broken, skipping HPA handling\n");
+			dev->quirks |= ATA_QUIRK_BROKEN_HPA;
+
+			/* we can continue if device aborted the command */
+			if (rc == -EACCES)
+				rc = 0;
+		}
+
+		return rc;
+	}
+	dev->n_native_sectors = native_sectors;
+
+	/* nothing to do? */
+	if (native_sectors <= sectors || !unlock_hpa) {
+		if (!print_info || native_sectors == sectors)
+			return 0;
+
+		if (native_sectors > sectors)
+			ata_dev_info(dev,
+				"HPA detected: current %llu, native %llu\n",
+				(unsigned long long)sectors,
+				(unsigned long long)native_sectors);
+		else if (native_sectors < sectors)
+			ata_dev_warn(dev,
+				"native sectors (%llu) is smaller than sectors (%llu)\n",
+				(unsigned long long)native_sectors,
+				(unsigned long long)sectors);
+		return 0;
+	}
+
+	/* let's unlock HPA */
+	rc = ata_set_max_sectors(dev, native_sectors);
+	if (rc == -EACCES) {
+		/* if device aborted the command, skip HPA resizing */
+		ata_dev_warn(dev,
+			     "device aborted resize (%llu -> %llu), skipping HPA handling\n",
+			     (unsigned long long)sectors,
+			     (unsigned long long)native_sectors);
+		dev->quirks |= ATA_QUIRK_BROKEN_HPA;
+		return 0;
+	} else if (rc)
+		return rc;
+
+	/* re-read IDENTIFY data */
+	rc = ata_dev_reread_id(dev, 0);
+	if (rc) {
+		ata_dev_err(dev,
+			    "failed to re-read IDENTIFY data after HPA resizing\n");
+		return rc;
+	}
+
+	if (print_info) {
+		u64 new_sectors = ata_id_n_sectors(dev->id);
+		ata_dev_info(dev,
+			"HPA unlocked: %llu -> %llu, native %llu\n",
+			(unsigned long long)sectors,
+			(unsigned long long)new_sectors,
+			(unsigned long long)native_sectors);
+	}
+
+	return 0;
+}
+
+/**
+ *	ata_dump_id - IDENTIFY DEVICE info debugging output
+ *	@dev: device from which the information is fetched
+ *	@id: IDENTIFY DEVICE page to dump
+ *
+ *	Dump selected 16-bit words from the given IDENTIFY DEVICE
+ *	page.
+ *
+ *	LOCKING:
+ *	caller.
+ */
+
+static inline void ata_dump_id(struct ata_device *dev, const u16 *id)
+{
+	ata_dev_dbg(dev,
+		"49==0x%04x  53==0x%04x  63==0x%04x  64==0x%04x  75==0x%04x\n"
+		"80==0x%04x  81==0x%04x  82==0x%04x  83==0x%04x  84==0x%04x\n"
+		"88==0x%04x  93==0x%04x\n",
+		id[49], id[53], id[63], id[64], id[75], id[80],
+		id[81], id[82], id[83], id[84], id[88], id[93]);
+}
+
+/**
+ *	ata_id_xfermask - Compute xfermask from the given IDENTIFY data
+ *	@id: IDENTIFY data to compute xfer mask from
+ *
+ *	Compute the xfermask for this device. This is not as trivial
+ *	as it seems if we must consider early devices correctly.
+ *
+ *	FIXME: pre IDE drive timing (do we care ?).
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Computed xfermask
+ */
+unsigned int ata_id_xfermask(const u16 *id)
+{
+	unsigned int pio_mask, mwdma_mask, udma_mask;
+
+	/* Usual case. Word 53 indicates word 64 is valid */
+	if (id[ATA_ID_FIELD_VALID] & (1 << 1)) {
+		pio_mask = id[ATA_ID_PIO_MODES] & 0x03;
+		pio_mask <<= 3;
+		pio_mask |= 0x7;
+	} else {
+		/* If word 64 isn't valid then Word 51 high byte holds
+		 * the PIO timing number for the maximum. Turn it into
+		 * a mask.
+		 */
+		u8 mode = (id[ATA_ID_OLD_PIO_MODES] >> 8) & 0xFF;
+		if (mode < 5)	/* Valid PIO range */
+			pio_mask = (2 << mode) - 1;
+		else
+			pio_mask = 1;
+
+		/* But wait.. there's more. Design your standards by
+		 * committee and you too can get a free iordy field to
+		 * process. However it is the speeds not the modes that
+		 * are supported... Note drivers using the timing API
+		 * will get this right anyway
+		 */
+	}
+
+	mwdma_mask = id[ATA_ID_MWDMA_MODES] & 0x07;
+
+	if (ata_id_is_cfa(id)) {
+		/*
+		 *	Process compact flash extended modes
+		 */
+		int pio = (id[ATA_ID_CFA_MODES] >> 0) & 0x7;
+		int dma = (id[ATA_ID_CFA_MODES] >> 3) & 0x7;
+
+		if (pio)
+			pio_mask |= (1 << 5);
+		if (pio > 1)
+			pio_mask |= (1 << 6);
+		if (dma)
+			mwdma_mask |= (1 << 3);
+		if (dma > 1)
+			mwdma_mask |= (1 << 4);
+	}
+
+	udma_mask = 0;
+	if (id[ATA_ID_FIELD_VALID] & (1 << 2))
+		udma_mask = id[ATA_ID_UDMA_MODES] & 0xff;
+
+	return ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask);
+}
+EXPORT_SYMBOL_GPL(ata_id_xfermask);
+
+static void ata_qc_complete_internal(struct ata_queued_cmd *qc)
+{
+	struct completion *waiting = qc->private_data;
+
+	complete(waiting);
+}
+
+/**
+ *	ata_exec_internal - execute libata internal command
+ *	@dev: Device to which the command is sent
+ *	@tf: Taskfile registers for the command and the result
+ *	@cdb: CDB for packet command
+ *	@dma_dir: Data transfer direction of the command
+ *	@buf: Data buffer of the command
+ *	@buflen: Length of data buffer
+ *	@timeout: Timeout in msecs (0 for default)
+ *
+ *	Executes libata internal command with timeout. @tf contains
+ *	the command on entry and the result on return. Timeout and error
+ *	conditions are reported via the return value. No recovery action
+ *	is taken after a command times out. It is the caller's duty to
+ *	clean up after timeout.
+ *
+ *	LOCKING:
+ *	None.  Should be called with kernel context, might sleep.
+ *
+ *	RETURNS:
+ *	Zero on success, AC_ERR_* mask on failure
+ */
+unsigned int ata_exec_internal(struct ata_device *dev, struct ata_taskfile *tf,
+			       const u8 *cdb, enum dma_data_direction dma_dir,
+			       void *buf, unsigned int buflen,
+			       unsigned int timeout)
+{
+	struct ata_link *link = dev->link;
+	struct ata_port *ap = link->ap;
+	u8 command = tf->command;
+	struct ata_queued_cmd *qc;
+	struct scatterlist sgl;
+	unsigned int preempted_tag;
+	u32 preempted_sactive;
+	u64 preempted_qc_active;
+	int preempted_nr_active_links;
+	bool auto_timeout = false;
+	DECLARE_COMPLETION_ONSTACK(wait);
+	unsigned long flags;
+	unsigned int err_mask;
+	int rc;
+
+	if (WARN_ON(dma_dir != DMA_NONE && !buf))
+		return AC_ERR_INVALID;
+
+	spin_lock_irqsave(ap->lock, flags);
+
+	/* No internal command while frozen */
+	if (ata_port_is_frozen(ap)) {
+		spin_unlock_irqrestore(ap->lock, flags);
+		return AC_ERR_SYSTEM;
+	}
+
+	/* Initialize internal qc */
+	qc = __ata_qc_from_tag(ap, ATA_TAG_INTERNAL);
+
+	qc->tag = ATA_TAG_INTERNAL;
+	qc->hw_tag = 0;
+	qc->scsicmd = NULL;
+	qc->ap = ap;
+	qc->dev = dev;
+	ata_qc_reinit(qc);
+
+	preempted_tag = link->active_tag;
+	preempted_sactive = link->sactive;
+	preempted_qc_active = ap->qc_active;
+	preempted_nr_active_links = ap->nr_active_links;
+	link->active_tag = ATA_TAG_POISON;
+	link->sactive = 0;
+	ap->qc_active = 0;
+	ap->nr_active_links = 0;
+
+	/* Prepare and issue qc */
+	qc->tf = *tf;
+	if (cdb)
+		memcpy(qc->cdb, cdb, ATAPI_CDB_LEN);
+
+	/* Some SATA bridges need us to indicate data xfer direction */
+	if (tf->protocol == ATAPI_PROT_DMA && (dev->flags & ATA_DFLAG_DMADIR) &&
+	    dma_dir == DMA_FROM_DEVICE)
+		qc->tf.feature |= ATAPI_DMADIR;
+
+	qc->flags |= ATA_QCFLAG_RESULT_TF;
+	qc->dma_dir = dma_dir;
+	if (dma_dir != DMA_NONE) {
+		sg_init_one(&sgl, buf, buflen);
+		ata_sg_init(qc, &sgl, 1);
+		qc->nbytes = buflen;
+	}
+
+	qc->private_data = &wait;
+	qc->complete_fn = ata_qc_complete_internal;
+
+	ata_qc_issue(qc);
+
+	spin_unlock_irqrestore(ap->lock, flags);
+
+	if (!timeout) {
+		if (ata_probe_timeout) {
+			timeout = ata_probe_timeout * 1000;
+		} else {
+			timeout = ata_internal_cmd_timeout(dev, command);
+			auto_timeout = true;
+		}
+	}
+
+	ata_eh_release(ap);
+
+	rc = wait_for_completion_timeout(&wait, msecs_to_jiffies(timeout));
+
+	ata_eh_acquire(ap);
+
+	ata_sff_flush_pio_task(ap);
+
+	if (!rc) {
+		/*
+		 * We are racing with irq here. If we lose, the following test
+		 * prevents us from completing the qc twice. If we win, the port
+		 * is frozen and will be cleaned up by ->post_internal_cmd().
+		 */
+		spin_lock_irqsave(ap->lock, flags);
+		if (qc->flags & ATA_QCFLAG_ACTIVE) {
+			qc->err_mask |= AC_ERR_TIMEOUT;
+			ata_port_freeze(ap);
+			ata_dev_warn(dev, "qc timeout after %u msecs (cmd 0x%x)\n",
+				     timeout, command);
+		}
+		spin_unlock_irqrestore(ap->lock, flags);
+	}
+
+	if (ap->ops->post_internal_cmd)
+		ap->ops->post_internal_cmd(qc);
+
+	/* Perform minimal error analysis */
+	if (qc->flags & ATA_QCFLAG_EH) {
+		if (qc->result_tf.status & (ATA_ERR | ATA_DF))
+			qc->err_mask |= AC_ERR_DEV;
+
+		if (!qc->err_mask)
+			qc->err_mask |= AC_ERR_OTHER;
+
+		if (qc->err_mask & ~AC_ERR_OTHER)
+			qc->err_mask &= ~AC_ERR_OTHER;
+	} else if (qc->tf.command == ATA_CMD_REQ_SENSE_DATA) {
+		qc->result_tf.status |= ATA_SENSE;
+	}
+
+	/* Finish up */
+	spin_lock_irqsave(ap->lock, flags);
+
+	*tf = qc->result_tf;
+	err_mask = qc->err_mask;
+
+	ata_qc_free(qc);
+	link->active_tag = preempted_tag;
+	link->sactive = preempted_sactive;
+	ap->qc_active = preempted_qc_active;
+	ap->nr_active_links = preempted_nr_active_links;
+
+	spin_unlock_irqrestore(ap->lock, flags);
+
+	if ((err_mask & AC_ERR_TIMEOUT) && auto_timeout)
+		ata_internal_cmd_timed_out(dev, command);
+
+	return err_mask;
+}
+
+/**
+ *	ata_pio_need_iordy	-	check if iordy needed
+ *	@adev: ATA device
+ *
+ *	Check if the current speed of the device requires IORDY. Used
+ *	by various controllers for chip configuration.
+ */
+unsigned int ata_pio_need_iordy(const struct ata_device *adev)
+{
+	/* Don't set IORDY if we're preparing for reset.  IORDY may
+	 * lead to controller lock up on certain controllers if the
+	 * port is not occupied.  See bko#11703 for details.
+	 */
+	if (adev->link->ap->pflags & ATA_PFLAG_RESETTING)
+		return 0;
+	/* Controller doesn't support IORDY.  Probably a pointless
+	 * check as the caller should know this.
+	 */
+	if (adev->link->ap->flags & ATA_FLAG_NO_IORDY)
+		return 0;
+	/* CF spec. r4.1 Table 22 says no iordy on PIO5 and PIO6.  */
+	if (ata_id_is_cfa(adev->id)
+	    && (adev->pio_mode == XFER_PIO_5 || adev->pio_mode == XFER_PIO_6))
+		return 0;
+	/* PIO3 and higher it is mandatory */
+	if (adev->pio_mode > XFER_PIO_2)
+		return 1;
+	/* We turn it on when possible */
+	if (ata_id_has_iordy(adev->id))
+		return 1;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ata_pio_need_iordy);
+
+/**
+ *	ata_pio_mask_no_iordy	-	Return the non IORDY mask
+ *	@adev: ATA device
+ *
+ *	Compute the highest mode possible if we are not using iordy. Return
+ *	-1 if no iordy mode is available.
+ */
+static u32 ata_pio_mask_no_iordy(const struct ata_device *adev)
+{
+	/* If we have no drive specific rule, then PIO 2 is non IORDY */
+	if (adev->id[ATA_ID_FIELD_VALID] & 2) {	/* EIDE */
+		u16 pio = adev->id[ATA_ID_EIDE_PIO];
+		/* Is the speed faster than the drive allows non IORDY ? */
+		if (pio) {
+			/* This is cycle times not frequency - watch the logic! */
+			if (pio > 240)	/* PIO2 is 240nS per cycle */
+				return 3 << ATA_SHIFT_PIO;
+			return 7 << ATA_SHIFT_PIO;
+		}
+	}
+	return 3 << ATA_SHIFT_PIO;
+}
+
+/**
+ *	ata_do_dev_read_id		-	default ID read method
+ *	@dev: device
+ *	@tf: proposed taskfile
+ *	@id: data buffer
+ *
+ *	Issue the identify taskfile and hand back the buffer containing
+ *	identify data. For some RAID controllers and for pre ATA devices
+ *	this function is wrapped or replaced by the driver
+ */
+unsigned int ata_do_dev_read_id(struct ata_device *dev,
+				struct ata_taskfile *tf, __le16 *id)
+{
+	return ata_exec_internal(dev, tf, NULL, DMA_FROM_DEVICE,
+				     id, sizeof(id[0]) * ATA_ID_WORDS, 0);
+}
+EXPORT_SYMBOL_GPL(ata_do_dev_read_id);
+
+/**
+ *	ata_dev_read_id - Read ID data from the specified device
+ *	@dev: target device
+ *	@p_class: pointer to class of the target device (may be changed)
+ *	@flags: ATA_READID_* flags
+ *	@id: buffer to read IDENTIFY data into
+ *
+ *	Read ID data from the specified device.  ATA_CMD_ID_ATA is
+ *	performed on ATA devices and ATA_CMD_ID_ATAPI on ATAPI
+ *	devices.  This function also issues ATA_CMD_INIT_DEV_PARAMS
+ *	for pre-ATA4 drives.
+ *
+ *	FIXME: ATA_CMD_ID_ATA is optional for early drives and right
+ *	now we abort if we hit that case.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	0 on success, -errno otherwise.
+ */
+int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
+		    unsigned int flags, u16 *id)
+{
+	struct ata_port *ap = dev->link->ap;
+	unsigned int class = *p_class;
+	struct ata_taskfile tf;
+	unsigned int err_mask = 0;
+	const char *reason;
+	bool is_semb = class == ATA_DEV_SEMB;
+	int may_fallback = 1, tried_spinup = 0;
+	int rc;
+
+retry:
+	ata_tf_init(dev, &tf);
+
+	switch (class) {
+	case ATA_DEV_SEMB:
+		class = ATA_DEV_ATA;	/* some hard drives report SEMB sig */
+		fallthrough;
+	case ATA_DEV_ATA:
+	case ATA_DEV_ZAC:
+		tf.command = ATA_CMD_ID_ATA;
+		break;
+	case ATA_DEV_ATAPI:
+		tf.command = ATA_CMD_ID_ATAPI;
+		break;
+	default:
+		rc = -ENODEV;
+		reason = "unsupported class";
+		goto err_out;
+	}
+
+	tf.protocol = ATA_PROT_PIO;
+
+	/* Some devices choke if TF registers contain garbage.  Make
+	 * sure those are properly initialized.
+	 */
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
+
+	/* Device presence detection is unreliable on some
+	 * controllers.  Always poll IDENTIFY if available.
+	 */
+	tf.flags |= ATA_TFLAG_POLLING;
+
+	if (ap->ops->read_id)
+		err_mask = ap->ops->read_id(dev, &tf, (__le16 *)id);
+	else
+		err_mask = ata_do_dev_read_id(dev, &tf, (__le16 *)id);
+
+	if (err_mask) {
+		if (err_mask & AC_ERR_NODEV_HINT) {
+			ata_dev_dbg(dev, "NODEV after polling detection\n");
+			return -ENOENT;
+		}
+
+		if (is_semb) {
+			ata_dev_info(dev,
+		     "IDENTIFY failed on device w/ SEMB sig, disabled\n");
+			/* SEMB is not supported yet */
+			*p_class = ATA_DEV_SEMB_UNSUP;
+			return 0;
+		}
+
+		if ((err_mask == AC_ERR_DEV) && (tf.error & ATA_ABORTED)) {
+			/* Device or controller might have reported
+			 * the wrong device class.  Give a shot at the
+			 * other IDENTIFY if the current one is
+			 * aborted by the device.
+			 */
+			if (may_fallback) {
+				may_fallback = 0;
+
+				if (class == ATA_DEV_ATA)
+					class = ATA_DEV_ATAPI;
+				else
+					class = ATA_DEV_ATA;
+				goto retry;
+			}
+
+			/* Control reaches here iff the device aborted
+			 * both flavors of IDENTIFYs which happens
+			 * sometimes with phantom devices.
+			 */
+			ata_dev_dbg(dev,
+				    "both IDENTIFYs aborted, assuming NODEV\n");
+			return -ENOENT;
+		}
+
+		rc = -EIO;
+		reason = "I/O error";
+		goto err_out;
+	}
+
+	if (dev->quirks & ATA_QUIRK_DUMP_ID) {
+		ata_dev_info(dev, "dumping IDENTIFY data, "
+			    "class=%d may_fallback=%d tried_spinup=%d\n",
+			    class, may_fallback, tried_spinup);
+		print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
+			       16, 2, id, ATA_ID_WORDS * sizeof(*id), true);
+	}
+
+	/* Falling back doesn't make sense if ID data was read
+	 * successfully at least once.
+	 */
+	may_fallback = 0;
+
+	swap_buf_le16(id, ATA_ID_WORDS);
+
+	/* sanity check */
+	rc = -EINVAL;
+	reason = "device reports invalid type";
+
+	if (class == ATA_DEV_ATA || class == ATA_DEV_ZAC) {
+		if (!ata_id_is_ata(id) && !ata_id_is_cfa(id))
+			goto err_out;
+		if (ap->host->flags & ATA_HOST_IGNORE_ATA &&
+							ata_id_is_ata(id)) {
+			ata_dev_dbg(dev,
+				"host indicates ignore ATA devices, ignored\n");
+			return -ENOENT;
+		}
+	} else {
+		if (ata_id_is_ata(id))
+			goto err_out;
+	}
+
+	if (!tried_spinup && (id[2] == 0x37c8 || id[2] == 0x738c)) {
+		tried_spinup = 1;
+		/*
+		 * Drive powered-up in standby mode, and requires a specific
+		 * SET_FEATURES spin-up subcommand before it will accept
+		 * anything other than the original IDENTIFY command.
+		 */
+		err_mask = ata_dev_set_feature(dev, SETFEATURES_SPINUP, 0);
+		if (err_mask && id[2] != 0x738c) {
+			rc = -EIO;
+			reason = "SPINUP failed";
+			goto err_out;
+		}
+		/*
+		 * If the drive initially returned incomplete IDENTIFY info,
+		 * we now must reissue the IDENTIFY command.
+		 */
+		if (id[2] == 0x37c8)
+			goto retry;
+	}
+
+	if ((flags & ATA_READID_POSTRESET) &&
+	    (class == ATA_DEV_ATA || class == ATA_DEV_ZAC)) {
+		/*
+		 * The exact sequence expected by certain pre-ATA4 drives is:
+		 * SRST RESET
+		 * IDENTIFY (optional in early ATA)
+		 * INITIALIZE DEVICE PARAMETERS (later IDE and ATA)
+		 * anything else..
+		 * Some drives were very specific about that exact sequence.
+		 *
+		 * Note that ATA4 says lba is mandatory so the second check
+		 * should never trigger.
+		 */
+		if (ata_id_major_version(id) < 4 || !ata_id_has_lba(id)) {
+			err_mask = ata_dev_init_params(dev, id[3], id[6]);
+			if (err_mask) {
+				rc = -EIO;
+				reason = "INIT_DEV_PARAMS failed";
+				goto err_out;
+			}
+
+			/* current CHS translation info (id[53-58]) might be
+			 * changed. reread the identify device info.
+			 */
+			flags &= ~ATA_READID_POSTRESET;
+			goto retry;
+		}
+	}
+
+	*p_class = class;
+
+	return 0;
+
+ err_out:
+	ata_dev_warn(dev, "failed to IDENTIFY (%s, err_mask=0x%x)\n",
+		     reason, err_mask);
+	return rc;
+}
+
+bool ata_dev_power_init_tf(struct ata_device *dev, struct ata_taskfile *tf,
+			   bool set_active)
+{
+	/* Only applies to ATA and ZAC devices */
+	if (dev->class != ATA_DEV_ATA && dev->class != ATA_DEV_ZAC)
+		return false;
+
+	ata_tf_init(dev, tf);
+	tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
+	tf->protocol = ATA_PROT_NODATA;
+
+	if (set_active) {
+		/* VERIFY for 1 sector at lba=0 */
+		tf->command = ATA_CMD_VERIFY;
+		tf->nsect = 1;
+		if (dev->flags & ATA_DFLAG_LBA) {
+			tf->flags |= ATA_TFLAG_LBA;
+			tf->device |= ATA_LBA;
+		} else {
+			/* CHS */
+			tf->lbal = 0x1; /* sect */
+		}
+	} else {
+		tf->command = ATA_CMD_STANDBYNOW1;
+	}
+
+	return true;
+}
+
+static bool ata_dev_power_is_active(struct ata_device *dev)
+{
+	struct ata_taskfile tf;
+	unsigned int err_mask;
+
+	ata_tf_init(dev, &tf);
+	tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
+	tf.protocol = ATA_PROT_NODATA;
+	tf.command = ATA_CMD_CHK_POWER;
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+	if (err_mask) {
+		ata_dev_err(dev, "Check power mode failed (err_mask=0x%x)\n",
+			    err_mask);
+		/*
+		 * Assume we are in standby mode so that we always force a
+		 * spinup in ata_dev_power_set_active().
+		 */
+		return false;
+	}
+
+	ata_dev_dbg(dev, "Power mode: 0x%02x\n", tf.nsect);
+
+	/* Active or idle */
+	return tf.nsect == 0xff;
+}
+
+/**
+ *	ata_dev_power_set_standby - Set a device power mode to standby
+ *	@dev: target device
+ *
+ *	Issue a STANDBY IMMEDIATE command to set a device power mode to standby.
+ *	For an HDD device, this spins down the disks.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ */
+void ata_dev_power_set_standby(struct ata_device *dev)
+{
+	unsigned long ap_flags = dev->link->ap->flags;
+	struct ata_taskfile tf;
+	unsigned int err_mask;
+
+	/* If the device is already sleeping or in standby, do nothing. */
+	if ((dev->flags & ATA_DFLAG_SLEEPING) ||
+	    !ata_dev_power_is_active(dev))
+		return;
+
+	/*
+	 * Some odd clown BIOSes issue spindown on power off (ACPI S4 or S5)
+	 * causing some drives to spin up and down again. For these, do nothing
+	 * if we are being called on shutdown.
+	 */
+	if ((ap_flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) &&
+	    system_state == SYSTEM_POWER_OFF)
+		return;
+
+	if ((ap_flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) &&
+	    system_entering_hibernation())
+		return;
+
+	/* Issue STANDBY IMMEDIATE command only if supported by the device */
+	if (!ata_dev_power_init_tf(dev, &tf, false))
+		return;
+
+	ata_dev_notice(dev, "Entering standby power mode\n");
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+	if (err_mask)
+		ata_dev_err(dev, "STANDBY IMMEDIATE failed (err_mask=0x%x)\n",
+			    err_mask);
+}
+
+/**
+ *	ata_dev_power_set_active -  Set a device power mode to active
+ *	@dev: target device
+ *
+ *	Issue a VERIFY command to enter to ensure that the device is in the
+ *	active power mode. For a spun-down HDD (standby or idle power mode),
+ *	the VERIFY command will complete after the disk spins up.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ */
+void ata_dev_power_set_active(struct ata_device *dev)
+{
+	struct ata_taskfile tf;
+	unsigned int err_mask;
+
+	/*
+	 * Issue READ VERIFY SECTORS command for 1 sector at lba=0 only
+	 * if supported by the device.
+	 */
+	if (!ata_dev_power_init_tf(dev, &tf, true))
+		return;
+
+	/*
+	 * Check the device power state & condition and force a spinup with
+	 * VERIFY command only if the drive is not already ACTIVE or IDLE.
+	 */
+	if (ata_dev_power_is_active(dev))
+		return;
+
+	ata_dev_notice(dev, "Entering active power mode\n");
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+	if (err_mask)
+		ata_dev_err(dev, "VERIFY failed (err_mask=0x%x)\n",
+			    err_mask);
+}
+
+/**
+ *	ata_read_log_page - read a specific log page
+ *	@dev: target device
+ *	@log: log to read
+ *	@page: page to read
+ *	@buf: buffer to store read page
+ *	@sectors: number of sectors to read
+ *
+ *	Read log page using READ_LOG_EXT command.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ *
+ *	RETURNS:
+ *	0 on success, AC_ERR_* mask otherwise.
+ */
+unsigned int ata_read_log_page(struct ata_device *dev, u8 log,
+			       u8 page, void *buf, unsigned int sectors)
+{
+	unsigned long ap_flags = dev->link->ap->flags;
+	struct ata_taskfile tf;
+	unsigned int err_mask;
+	bool dma = false;
+
+	ata_dev_dbg(dev, "read log page - log 0x%x, page 0x%x\n", log, page);
+
+	/*
+	 * Return error without actually issuing the command on controllers
+	 * which e.g. lockup on a read log page.
+	 */
+	if (ap_flags & ATA_FLAG_NO_LOG_PAGE)
+		return AC_ERR_DEV;
+
+retry:
+	ata_tf_init(dev, &tf);
+	if (ata_dma_enabled(dev) && ata_id_has_read_log_dma_ext(dev->id) &&
+	    !(dev->quirks & ATA_QUIRK_NO_DMA_LOG)) {
+		tf.command = ATA_CMD_READ_LOG_DMA_EXT;
+		tf.protocol = ATA_PROT_DMA;
+		dma = true;
+	} else {
+		tf.command = ATA_CMD_READ_LOG_EXT;
+		tf.protocol = ATA_PROT_PIO;
+		dma = false;
+	}
+	tf.lbal = log;
+	tf.lbam = page;
+	tf.nsect = sectors;
+	tf.hob_nsect = sectors >> 8;
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_LBA48 | ATA_TFLAG_DEVICE;
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE,
+				     buf, sectors * ATA_SECT_SIZE, 0);
+
+	if (err_mask) {
+		if (dma) {
+			dev->quirks |= ATA_QUIRK_NO_DMA_LOG;
+			if (!ata_port_is_frozen(dev->link->ap))
+				goto retry;
+		}
+		ata_dev_err(dev,
+			    "Read log 0x%02x page 0x%02x failed, Emask 0x%x\n",
+			    (unsigned int)log, (unsigned int)page, err_mask);
+	}
+
+	return err_mask;
+}
+
+static int ata_log_supported(struct ata_device *dev, u8 log)
+{
+	if (dev->quirks & ATA_QUIRK_NO_LOG_DIR)
+		return 0;
+
+	if (ata_read_log_page(dev, ATA_LOG_DIRECTORY, 0, dev->sector_buf, 1))
+		return 0;
+	return get_unaligned_le16(&dev->sector_buf[log * 2]);
+}
+
+static bool ata_identify_page_supported(struct ata_device *dev, u8 page)
+{
+	unsigned int err, i;
+
+	if (dev->quirks & ATA_QUIRK_NO_ID_DEV_LOG)
+		return false;
+
+	if (!ata_log_supported(dev, ATA_LOG_IDENTIFY_DEVICE)) {
+		/*
+		 * IDENTIFY DEVICE data log is defined as mandatory starting
+		 * with ACS-3 (ATA version 10). Warn about the missing log
+		 * for drives which implement this ATA level or above.
+		 */
+		if (ata_id_major_version(dev->id) >= 10)
+			ata_dev_notice(dev,
+				"ATA Identify Device Log not supported\n");
+		dev->quirks |= ATA_QUIRK_NO_ID_DEV_LOG;
+		return false;
+	}
+
+	/*
+	 * Read IDENTIFY DEVICE data log, page 0, to figure out if the page is
+	 * supported.
+	 */
+	err = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE, 0,
+				dev->sector_buf, 1);
+	if (err)
+		return false;
+
+	for (i = 0; i < dev->sector_buf[8]; i++) {
+		if (dev->sector_buf[9 + i] == page)
+			return true;
+	}
+
+	return false;
+}
+
+static int ata_do_link_spd_quirk(struct ata_device *dev)
+{
+	struct ata_link *plink = ata_dev_phys_link(dev);
+	u32 target, target_limit;
+
+	if (!sata_scr_valid(plink))
+		return 0;
+
+	if (dev->quirks & ATA_QUIRK_1_5_GBPS)
+		target = 1;
+	else
+		return 0;
+
+	target_limit = (1 << target) - 1;
+
+	/* if already on stricter limit, no need to push further */
+	if (plink->sata_spd_limit <= target_limit)
+		return 0;
+
+	plink->sata_spd_limit = target_limit;
+
+	/* Request another EH round by returning -EAGAIN if link is
+	 * going faster than the target speed.  Forward progress is
+	 * guaranteed by setting sata_spd_limit to target_limit above.
+	 */
+	if (plink->sata_spd > target) {
+		ata_dev_info(dev, "applying link speed limit quirk to %s\n",
+			     sata_spd_string(target));
+		return -EAGAIN;
+	}
+	return 0;
+}
+
+static inline bool ata_dev_knobble(struct ata_device *dev)
+{
+	struct ata_port *ap = dev->link->ap;
+
+	if (ata_dev_quirks(dev) & ATA_QUIRK_BRIDGE_OK)
+		return false;
+
+	return ((ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(dev->id)));
+}
+
+static void ata_dev_config_ncq_send_recv(struct ata_device *dev)
+{
+	unsigned int err_mask;
+
+	if (!ata_log_supported(dev, ATA_LOG_NCQ_SEND_RECV)) {
+		ata_dev_notice(dev, "NCQ Send/Recv Log not supported\n");
+		return;
+	}
+	err_mask = ata_read_log_page(dev, ATA_LOG_NCQ_SEND_RECV,
+				     0, dev->sector_buf, 1);
+	if (!err_mask) {
+		u8 *cmds = dev->ncq_send_recv_cmds;
+
+		dev->flags |= ATA_DFLAG_NCQ_SEND_RECV;
+		memcpy(cmds, dev->sector_buf, ATA_LOG_NCQ_SEND_RECV_SIZE);
+
+		if (dev->quirks & ATA_QUIRK_NO_NCQ_TRIM) {
+			ata_dev_dbg(dev, "disabling queued TRIM support\n");
+			cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &=
+				~ATA_LOG_NCQ_SEND_RECV_DSM_TRIM;
+		}
+	}
+}
+
+static void ata_dev_config_ncq_non_data(struct ata_device *dev)
+{
+	unsigned int err_mask;
+
+	if (!ata_log_supported(dev, ATA_LOG_NCQ_NON_DATA)) {
+		ata_dev_notice(dev,
+			       "NCQ Send/Recv Log not supported\n");
+		return;
+	}
+	err_mask = ata_read_log_page(dev, ATA_LOG_NCQ_NON_DATA,
+				     0, dev->sector_buf, 1);
+	if (!err_mask)
+		memcpy(dev->ncq_non_data_cmds, dev->sector_buf,
+		       ATA_LOG_NCQ_NON_DATA_SIZE);
+}
+
+static void ata_dev_config_ncq_prio(struct ata_device *dev)
+{
+	unsigned int err_mask;
+
+	if (!ata_identify_page_supported(dev, ATA_LOG_SATA_SETTINGS))
+		return;
+
+	err_mask = ata_read_log_page(dev,
+				     ATA_LOG_IDENTIFY_DEVICE,
+				     ATA_LOG_SATA_SETTINGS,
+				     dev->sector_buf, 1);
+	if (err_mask)
+		goto not_supported;
+
+	if (!(dev->sector_buf[ATA_LOG_NCQ_PRIO_OFFSET] & BIT(3)))
+		goto not_supported;
+
+	dev->flags |= ATA_DFLAG_NCQ_PRIO;
+
+	return;
+
+not_supported:
+	dev->flags &= ~ATA_DFLAG_NCQ_PRIO_ENABLED;
+	dev->flags &= ~ATA_DFLAG_NCQ_PRIO;
+}
+
+static bool ata_dev_check_adapter(struct ata_device *dev,
+				  unsigned short vendor_id)
+{
+	struct pci_dev *pcidev = NULL;
+	struct device *parent_dev = NULL;
+
+	for (parent_dev = dev->tdev.parent; parent_dev != NULL;
+	     parent_dev = parent_dev->parent) {
+		if (dev_is_pci(parent_dev)) {
+			pcidev = to_pci_dev(parent_dev);
+			if (pcidev->vendor == vendor_id)
+				return true;
+			break;
+		}
+	}
+
+	return false;
+}
+
+static int ata_dev_config_ncq(struct ata_device *dev,
+			       char *desc, size_t desc_sz)
+{
+	struct ata_port *ap = dev->link->ap;
+	int hdepth = 0, ddepth = ata_id_queue_depth(dev->id);
+	unsigned int err_mask;
+	char *aa_desc = "";
+
+	if (!ata_id_has_ncq(dev->id)) {
+		desc[0] = '\0';
+		return 0;
+	}
+	if (!IS_ENABLED(CONFIG_SATA_HOST))
+		return 0;
+	if (dev->quirks & ATA_QUIRK_NONCQ) {
+		snprintf(desc, desc_sz, "NCQ (not used)");
+		return 0;
+	}
+
+	if (dev->quirks & ATA_QUIRK_NO_NCQ_ON_ATI &&
+	    ata_dev_check_adapter(dev, PCI_VENDOR_ID_ATI)) {
+		snprintf(desc, desc_sz, "NCQ (not used)");
+		return 0;
+	}
+
+	if (ap->flags & ATA_FLAG_NCQ) {
+		hdepth = min(ap->scsi_host->can_queue, ATA_MAX_QUEUE);
+		dev->flags |= ATA_DFLAG_NCQ;
+	}
+
+	if (!(dev->quirks & ATA_QUIRK_BROKEN_FPDMA_AA) &&
+		(ap->flags & ATA_FLAG_FPDMA_AA) &&
+		ata_id_has_fpdma_aa(dev->id)) {
+		err_mask = ata_dev_set_feature(dev, SETFEATURES_SATA_ENABLE,
+			SATA_FPDMA_AA);
+		if (err_mask) {
+			ata_dev_err(dev,
+				    "failed to enable AA (error_mask=0x%x)\n",
+				    err_mask);
+			if (err_mask != AC_ERR_DEV) {
+				dev->quirks |= ATA_QUIRK_BROKEN_FPDMA_AA;
+				return -EIO;
+			}
+		} else
+			aa_desc = ", AA";
+	}
+
+	if (hdepth >= ddepth)
+		snprintf(desc, desc_sz, "NCQ (depth %d)%s", ddepth, aa_desc);
+	else
+		snprintf(desc, desc_sz, "NCQ (depth %d/%d)%s", hdepth,
+			ddepth, aa_desc);
+
+	if ((ap->flags & ATA_FLAG_FPDMA_AUX)) {
+		if (ata_id_has_ncq_send_and_recv(dev->id))
+			ata_dev_config_ncq_send_recv(dev);
+		if (ata_id_has_ncq_non_data(dev->id))
+			ata_dev_config_ncq_non_data(dev);
+		if (ata_id_has_ncq_prio(dev->id))
+			ata_dev_config_ncq_prio(dev);
+	}
+
+	return 0;
+}
+
+static void ata_dev_config_sense_reporting(struct ata_device *dev)
+{
+	unsigned int err_mask;
+
+	if (!ata_id_has_sense_reporting(dev->id))
+		return;
+
+	if (ata_id_sense_reporting_enabled(dev->id))
+		return;
+
+	err_mask = ata_dev_set_feature(dev, SETFEATURE_SENSE_DATA, 0x1);
+	if (err_mask) {
+		ata_dev_dbg(dev,
+			    "failed to enable Sense Data Reporting, Emask 0x%x\n",
+			    err_mask);
+	}
+}
+
+static void ata_dev_config_zac(struct ata_device *dev)
+{
+	unsigned int err_mask;
+	u8 *identify_buf = dev->sector_buf;
+
+	dev->zac_zones_optimal_open = U32_MAX;
+	dev->zac_zones_optimal_nonseq = U32_MAX;
+	dev->zac_zones_max_open = U32_MAX;
+
+	/*
+	 * Always set the 'ZAC' flag for Host-managed devices.
+	 */
+	if (dev->class == ATA_DEV_ZAC)
+		dev->flags |= ATA_DFLAG_ZAC;
+	else if (ata_id_zoned_cap(dev->id) == 0x01)
+		/*
+		 * Check for host-aware devices.
+		 */
+		dev->flags |= ATA_DFLAG_ZAC;
+
+	if (!(dev->flags & ATA_DFLAG_ZAC))
+		return;
+
+	if (!ata_identify_page_supported(dev, ATA_LOG_ZONED_INFORMATION)) {
+		ata_dev_warn(dev,
+			     "ATA Zoned Information Log not supported\n");
+		return;
+	}
+
+	/*
+	 * Read IDENTIFY DEVICE data log, page 9 (Zoned-device information)
+	 */
+	err_mask = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE,
+				     ATA_LOG_ZONED_INFORMATION,
+				     identify_buf, 1);
+	if (!err_mask) {
+		u64 zoned_cap, opt_open, opt_nonseq, max_open;
+
+		zoned_cap = get_unaligned_le64(&identify_buf[8]);
+		if ((zoned_cap >> 63))
+			dev->zac_zoned_cap = (zoned_cap & 1);
+		opt_open = get_unaligned_le64(&identify_buf[24]);
+		if ((opt_open >> 63))
+			dev->zac_zones_optimal_open = (u32)opt_open;
+		opt_nonseq = get_unaligned_le64(&identify_buf[32]);
+		if ((opt_nonseq >> 63))
+			dev->zac_zones_optimal_nonseq = (u32)opt_nonseq;
+		max_open = get_unaligned_le64(&identify_buf[40]);
+		if ((max_open >> 63))
+			dev->zac_zones_max_open = (u32)max_open;
+	}
+}
+
+static void ata_dev_config_trusted(struct ata_device *dev)
+{
+	u64 trusted_cap;
+	unsigned int err;
+
+	if (!ata_id_has_trusted(dev->id))
+		return;
+
+	if (!ata_identify_page_supported(dev, ATA_LOG_SECURITY)) {
+		ata_dev_warn(dev,
+			     "Security Log not supported\n");
+		return;
+	}
+
+	err = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE, ATA_LOG_SECURITY,
+				dev->sector_buf, 1);
+	if (err)
+		return;
+
+	trusted_cap = get_unaligned_le64(&dev->sector_buf[40]);
+	if (!(trusted_cap & (1ULL << 63))) {
+		ata_dev_dbg(dev,
+			    "Trusted Computing capability qword not valid!\n");
+		return;
+	}
+
+	if (trusted_cap & (1 << 0))
+		dev->flags |= ATA_DFLAG_TRUSTED;
+}
+
+void ata_dev_cleanup_cdl_resources(struct ata_device *dev)
+{
+	kfree(dev->cdl);
+	dev->cdl = NULL;
+}
+
+static int ata_dev_init_cdl_resources(struct ata_device *dev)
+{
+	struct ata_cdl *cdl = dev->cdl;
+	unsigned int err_mask;
+
+	if (!cdl) {
+		cdl = kzalloc(sizeof(*cdl), GFP_KERNEL);
+		if (!cdl)
+			return -ENOMEM;
+		dev->cdl = cdl;
+	}
+
+	err_mask = ata_read_log_page(dev, ATA_LOG_CDL, 0, cdl->desc_log_buf,
+				     ATA_LOG_CDL_SIZE / ATA_SECT_SIZE);
+	if (err_mask) {
+		ata_dev_warn(dev, "Read Command Duration Limits log failed\n");
+		ata_dev_cleanup_cdl_resources(dev);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void ata_dev_config_cdl(struct ata_device *dev)
+{
+	unsigned int err_mask;
+	bool cdl_enabled;
+	u64 val;
+	int ret;
+
+	if (ata_id_major_version(dev->id) < 11)
+		goto not_supported;
+
+	if (!ata_log_supported(dev, ATA_LOG_IDENTIFY_DEVICE) ||
+	    !ata_identify_page_supported(dev, ATA_LOG_SUPPORTED_CAPABILITIES) ||
+	    !ata_identify_page_supported(dev, ATA_LOG_CURRENT_SETTINGS))
+		goto not_supported;
+
+	err_mask = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE,
+				     ATA_LOG_SUPPORTED_CAPABILITIES,
+				     dev->sector_buf, 1);
+	if (err_mask)
+		goto not_supported;
+
+	/* Check Command Duration Limit Supported bits */
+	val = get_unaligned_le64(&dev->sector_buf[168]);
+	if (!(val & BIT_ULL(63)) || !(val & BIT_ULL(0)))
+		goto not_supported;
+
+	/* Warn the user if command duration guideline is not supported */
+	if (!(val & BIT_ULL(1)))
+		ata_dev_warn(dev,
+			"Command duration guideline is not supported\n");
+
+	/*
+	 * We must have support for the sense data for successful NCQ commands
+	 * log indicated by the successful NCQ command sense data supported bit.
+	 */
+	val = get_unaligned_le64(&dev->sector_buf[8]);
+	if (!(val & BIT_ULL(63)) || !(val & BIT_ULL(47))) {
+		ata_dev_warn(dev,
+			"CDL supported but Successful NCQ Command Sense Data is not supported\n");
+		goto not_supported;
+	}
+
+	/* Without NCQ autosense, the successful NCQ commands log is useless. */
+	if (!ata_id_has_ncq_autosense(dev->id)) {
+		ata_dev_warn(dev,
+			"CDL supported but NCQ autosense is not supported\n");
+		goto not_supported;
+	}
+
+	/*
+	 * If CDL is marked as enabled, make sure the feature is enabled too.
+	 * Conversely, if CDL is disabled, make sure the feature is turned off.
+	 */
+	err_mask = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE,
+				     ATA_LOG_CURRENT_SETTINGS,
+				     dev->sector_buf, 1);
+	if (err_mask)
+		goto not_supported;
+
+	val = get_unaligned_le64(&dev->sector_buf[8]);
+	cdl_enabled = val & BIT_ULL(63) && val & BIT_ULL(21);
+	if (dev->flags & ATA_DFLAG_CDL_ENABLED) {
+		if (!cdl_enabled) {
+			/* Enable CDL on the device */
+			err_mask = ata_dev_set_feature(dev, SETFEATURES_CDL, 1);
+			if (err_mask) {
+				ata_dev_err(dev,
+					    "Enable CDL feature failed\n");
+				goto not_supported;
+			}
+		}
+	} else {
+		if (cdl_enabled) {
+			/* Disable CDL on the device */
+			err_mask = ata_dev_set_feature(dev, SETFEATURES_CDL, 0);
+			if (err_mask) {
+				ata_dev_err(dev,
+					    "Disable CDL feature failed\n");
+				goto not_supported;
+			}
+		}
+	}
+
+	/*
+	 * While CDL itself has to be enabled using sysfs, CDL requires that
+	 * sense data for successful NCQ commands is enabled to work properly.
+	 * Just like ata_dev_config_sense_reporting(), enable it unconditionally
+	 * if supported.
+	 */
+	if (!(val & BIT_ULL(63)) || !(val & BIT_ULL(18))) {
+		err_mask = ata_dev_set_feature(dev,
+					SETFEATURE_SENSE_DATA_SUCC_NCQ, 0x1);
+		if (err_mask) {
+			ata_dev_warn(dev,
+				     "failed to enable Sense Data for successful NCQ commands, Emask 0x%x\n",
+				     err_mask);
+			goto not_supported;
+		}
+	}
+
+	/* CDL is supported: allocate and initialize needed resources. */
+	ret = ata_dev_init_cdl_resources(dev);
+	if (ret) {
+		ata_dev_warn(dev, "Initialize CDL resources failed\n");
+		goto not_supported;
+	}
+
+	dev->flags |= ATA_DFLAG_CDL;
+
+	return;
+
+not_supported:
+	dev->flags &= ~(ATA_DFLAG_CDL | ATA_DFLAG_CDL_ENABLED);
+	ata_dev_cleanup_cdl_resources(dev);
+}
+
+static int ata_dev_config_lba(struct ata_device *dev)
+{
+	const u16 *id = dev->id;
+	const char *lba_desc;
+	char ncq_desc[32];
+	int ret;
+
+	dev->flags |= ATA_DFLAG_LBA;
+
+	if (ata_id_has_lba48(id)) {
+		lba_desc = "LBA48";
+		dev->flags |= ATA_DFLAG_LBA48;
+		if (dev->n_sectors >= (1UL << 28) &&
+		    ata_id_has_flush_ext(id))
+			dev->flags |= ATA_DFLAG_FLUSH_EXT;
+	} else {
+		lba_desc = "LBA";
+	}
+
+	/* config NCQ */
+	ret = ata_dev_config_ncq(dev, ncq_desc, sizeof(ncq_desc));
+
+	/* print device info to dmesg */
+	if (ata_dev_print_info(dev))
+		ata_dev_info(dev,
+			     "%llu sectors, multi %u: %s %s\n",
+			     (unsigned long long)dev->n_sectors,
+			     dev->multi_count, lba_desc, ncq_desc);
+
+	return ret;
+}
+
+static void ata_dev_config_chs(struct ata_device *dev)
+{
+	const u16 *id = dev->id;
+
+	if (ata_id_current_chs_valid(id)) {
+		/* Current CHS translation is valid. */
+		dev->cylinders = id[54];
+		dev->heads     = id[55];
+		dev->sectors   = id[56];
+	} else {
+		/* Default translation */
+		dev->cylinders	= id[1];
+		dev->heads	= id[3];
+		dev->sectors	= id[6];
+	}
+
+	/* print device info to dmesg */
+	if (ata_dev_print_info(dev))
+		ata_dev_info(dev,
+			     "%llu sectors, multi %u, CHS %u/%u/%u\n",
+			     (unsigned long long)dev->n_sectors,
+			     dev->multi_count, dev->cylinders,
+			     dev->heads, dev->sectors);
+}
+
+static void ata_dev_config_fua(struct ata_device *dev)
+{
+	/* Ignore FUA support if its use is disabled globally */
+	if (!libata_fua)
+		goto nofua;
+
+	/* Ignore devices without support for WRITE DMA FUA EXT */
+	if (!(dev->flags & ATA_DFLAG_LBA48) || !ata_id_has_fua(dev->id))
+		goto nofua;
+
+	/* Ignore known bad devices and devices that lack NCQ support */
+	if (!ata_ncq_supported(dev) || (dev->quirks & ATA_QUIRK_NO_FUA))
+		goto nofua;
+
+	dev->flags |= ATA_DFLAG_FUA;
+
+	return;
+
+nofua:
+	dev->flags &= ~ATA_DFLAG_FUA;
+}
+
+static void ata_dev_config_devslp(struct ata_device *dev)
+{
+	u8 *sata_setting = dev->sector_buf;
+	unsigned int err_mask;
+	int i, j;
+
+	/*
+	 * Check device sleep capability. Get DevSlp timing variables
+	 * from SATA Settings page of Identify Device Data Log.
+	 */
+	if (!ata_id_has_devslp(dev->id) ||
+	    !ata_identify_page_supported(dev, ATA_LOG_SATA_SETTINGS))
+		return;
+
+	err_mask = ata_read_log_page(dev,
+				     ATA_LOG_IDENTIFY_DEVICE,
+				     ATA_LOG_SATA_SETTINGS,
+				     sata_setting, 1);
+	if (err_mask)
+		return;
+
+	dev->flags |= ATA_DFLAG_DEVSLP;
+	for (i = 0; i < ATA_LOG_DEVSLP_SIZE; i++) {
+		j = ATA_LOG_DEVSLP_OFFSET + i;
+		dev->devslp_timing[i] = sata_setting[j];
+	}
+}
+
+static void ata_dev_config_cpr(struct ata_device *dev)
+{
+	unsigned int err_mask;
+	size_t buf_len;
+	int i, nr_cpr = 0;
+	struct ata_cpr_log *cpr_log = NULL;
+	u8 *desc, *buf = NULL;
+
+	if (ata_id_major_version(dev->id) < 11)
+		goto out;
+
+	buf_len = ata_log_supported(dev, ATA_LOG_CONCURRENT_POSITIONING_RANGES);
+	if (buf_len == 0)
+		goto out;
+
+	/*
+	 * Read the concurrent positioning ranges log (0x47). We can have at
+	 * most 255 32B range descriptors plus a 64B header. This log varies in
+	 * size, so use the size reported in the GPL directory. Reading beyond
+	 * the supported length will result in an error.
+	 */
+	buf_len <<= 9;
+	buf = kzalloc(buf_len, GFP_KERNEL);
+	if (!buf)
+		goto out;
+
+	err_mask = ata_read_log_page(dev, ATA_LOG_CONCURRENT_POSITIONING_RANGES,
+				     0, buf, buf_len >> 9);
+	if (err_mask)
+		goto out;
+
+	nr_cpr = buf[0];
+	if (!nr_cpr)
+		goto out;
+
+	cpr_log = kzalloc(struct_size(cpr_log, cpr, nr_cpr), GFP_KERNEL);
+	if (!cpr_log)
+		goto out;
+
+	cpr_log->nr_cpr = nr_cpr;
+	desc = &buf[64];
+	for (i = 0; i < nr_cpr; i++, desc += 32) {
+		cpr_log->cpr[i].num = desc[0];
+		cpr_log->cpr[i].num_storage_elements = desc[1];
+		cpr_log->cpr[i].start_lba = get_unaligned_le64(&desc[8]);
+		cpr_log->cpr[i].num_lbas = get_unaligned_le64(&desc[16]);
+	}
+
+out:
+	swap(dev->cpr_log, cpr_log);
+	kfree(cpr_log);
+	kfree(buf);
+}
+
+static void ata_dev_print_features(struct ata_device *dev)
+{
+	if (!(dev->flags & ATA_DFLAG_FEATURES_MASK))
+		return;
+
+	ata_dev_info(dev,
+		     "Features:%s%s%s%s%s%s%s%s\n",
+		     dev->flags & ATA_DFLAG_FUA ? " FUA" : "",
+		     dev->flags & ATA_DFLAG_TRUSTED ? " Trust" : "",
+		     dev->flags & ATA_DFLAG_DA ? " Dev-Attention" : "",
+		     dev->flags & ATA_DFLAG_DEVSLP ? " Dev-Sleep" : "",
+		     dev->flags & ATA_DFLAG_NCQ_SEND_RECV ? " NCQ-sndrcv" : "",
+		     dev->flags & ATA_DFLAG_NCQ_PRIO ? " NCQ-prio" : "",
+		     dev->flags & ATA_DFLAG_CDL ? " CDL" : "",
+		     dev->cpr_log ? " CPR" : "");
+}
+
+/**
+ *	ata_dev_configure - Configure the specified ATA/ATAPI device
+ *	@dev: Target device to configure
+ *
+ *	Configure @dev according to @dev->id.  Generic and low-level
+ *	driver specific fixups are also applied.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	0 on success, -errno otherwise
+ */
+int ata_dev_configure(struct ata_device *dev)
+{
+	struct ata_port *ap = dev->link->ap;
+	bool print_info = ata_dev_print_info(dev);
+	const u16 *id = dev->id;
+	unsigned int xfer_mask;
+	unsigned int err_mask;
+	char revbuf[7];		/* XYZ-99\0 */
+	char fwrevbuf[ATA_ID_FW_REV_LEN+1];
+	char modelbuf[ATA_ID_PROD_LEN+1];
+	int rc;
+
+	if (!ata_dev_enabled(dev)) {
+		ata_dev_dbg(dev, "no device\n");
+		return 0;
+	}
+
+	/* Set quirks */
+	dev->quirks |= ata_dev_quirks(dev);
+	ata_force_quirks(dev);
+
+	if (dev->quirks & ATA_QUIRK_DISABLE) {
+		ata_dev_info(dev, "unsupported device, disabling\n");
+		ata_dev_disable(dev);
+		return 0;
+	}
+
+	if ((!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) &&
+	    dev->class == ATA_DEV_ATAPI) {
+		ata_dev_warn(dev, "WARNING: ATAPI is %s, device ignored\n",
+			     atapi_enabled ? "not supported with this driver"
+			     : "disabled");
+		ata_dev_disable(dev);
+		return 0;
+	}
+
+	rc = ata_do_link_spd_quirk(dev);
+	if (rc)
+		return rc;
+
+	/* some WD SATA-1 drives have issues with LPM, turn on NOLPM for them */
+	if ((dev->quirks & ATA_QUIRK_WD_BROKEN_LPM) &&
+	    (id[ATA_ID_SATA_CAPABILITY] & 0xe) == 0x2)
+		dev->quirks |= ATA_QUIRK_NOLPM;
+
+	if (ap->flags & ATA_FLAG_NO_LPM)
+		dev->quirks |= ATA_QUIRK_NOLPM;
+
+	if (dev->quirks & ATA_QUIRK_NOLPM) {
+		ata_dev_warn(dev, "LPM support broken, forcing max_power\n");
+		dev->link->ap->target_lpm_policy = ATA_LPM_MAX_POWER;
+	}
+
+	/* let ACPI work its magic */
+	rc = ata_acpi_on_devcfg(dev);
+	if (rc)
+		return rc;
+
+	/* massage HPA, do it early as it might change IDENTIFY data */
+	rc = ata_hpa_resize(dev);
+	if (rc)
+		return rc;
+
+	/* print device capabilities */
+	ata_dev_dbg(dev,
+		    "%s: cfg 49:%04x 82:%04x 83:%04x 84:%04x "
+		    "85:%04x 86:%04x 87:%04x 88:%04x\n",
+		    __func__,
+		    id[49], id[82], id[83], id[84],
+		    id[85], id[86], id[87], id[88]);
+
+	/* initialize to-be-configured parameters */
+	dev->flags &= ~ATA_DFLAG_CFG_MASK;
+	dev->max_sectors = 0;
+	dev->cdb_len = 0;
+	dev->n_sectors = 0;
+	dev->cylinders = 0;
+	dev->heads = 0;
+	dev->sectors = 0;
+	dev->multi_count = 0;
+
+	/*
+	 * common ATA, ATAPI feature tests
+	 */
+
+	/* find max transfer mode; for printk only */
+	xfer_mask = ata_id_xfermask(id);
+
+	ata_dump_id(dev, id);
+
+	/* SCSI only uses 4-char revisions, dump full 8 chars from ATA */
+	ata_id_c_string(dev->id, fwrevbuf, ATA_ID_FW_REV,
+			sizeof(fwrevbuf));
+
+	ata_id_c_string(dev->id, modelbuf, ATA_ID_PROD,
+			sizeof(modelbuf));
+
+	/* ATA-specific feature tests */
+	if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) {
+		if (ata_id_is_cfa(id)) {
+			/* CPRM may make this media unusable */
+			if (id[ATA_ID_CFA_KEY_MGMT] & 1)
+				ata_dev_notice(dev,
+	"supports DRM functions and may not be fully accessible\n");
+			snprintf(revbuf, 7, "CFA");
+		} else {
+			snprintf(revbuf, 7, "ATA-%d", ata_id_major_version(id));
+			/* Warn the user if the device has TPM extensions */
+			if (ata_id_has_tpm(id))
+				ata_dev_notice(dev,
+	"supports DRM functions and may not be fully accessible\n");
+		}
+
+		dev->n_sectors = ata_id_n_sectors(id);
+
+		/* get current R/W Multiple count setting */
+		if ((dev->id[47] >> 8) == 0x80 && (dev->id[59] & 0x100)) {
+			unsigned int max = dev->id[47] & 0xff;
+			unsigned int cnt = dev->id[59] & 0xff;
+			/* only recognize/allow powers of two here */
+			if (is_power_of_2(max) && is_power_of_2(cnt))
+				if (cnt <= max)
+					dev->multi_count = cnt;
+		}
+
+		/* print device info to dmesg */
+		if (print_info)
+			ata_dev_info(dev, "%s: %s, %s, max %s\n",
+				     revbuf, modelbuf, fwrevbuf,
+				     ata_mode_string(xfer_mask));
+
+		if (ata_id_has_lba(id)) {
+			rc = ata_dev_config_lba(dev);
+			if (rc)
+				return rc;
+		} else {
+			ata_dev_config_chs(dev);
+		}
+
+		ata_dev_config_fua(dev);
+		ata_dev_config_devslp(dev);
+		ata_dev_config_sense_reporting(dev);
+		ata_dev_config_zac(dev);
+		ata_dev_config_trusted(dev);
+		ata_dev_config_cpr(dev);
+		ata_dev_config_cdl(dev);
+		dev->cdb_len = 32;
+
+		if (print_info)
+			ata_dev_print_features(dev);
+	}
+
+	/* ATAPI-specific feature tests */
+	else if (dev->class == ATA_DEV_ATAPI) {
+		const char *cdb_intr_string = "";
+		const char *atapi_an_string = "";
+		const char *dma_dir_string = "";
+		u32 sntf;
+
+		rc = atapi_cdb_len(id);
+		if ((rc < 12) || (rc > ATAPI_CDB_LEN)) {
+			ata_dev_warn(dev, "unsupported CDB len %d\n", rc);
+			rc = -EINVAL;
+			goto err_out_nosup;
+		}
+		dev->cdb_len = (unsigned int) rc;
+
+		/* Enable ATAPI AN if both the host and device have
+		 * the support.  If PMP is attached, SNTF is required
+		 * to enable ATAPI AN to discern between PHY status
+		 * changed notifications and ATAPI ANs.
+		 */
+		if (atapi_an &&
+		    (ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) &&
+		    (!sata_pmp_attached(ap) ||
+		     sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) {
+			/* issue SET feature command to turn this on */
+			err_mask = ata_dev_set_feature(dev,
+					SETFEATURES_SATA_ENABLE, SATA_AN);
+			if (err_mask)
+				ata_dev_err(dev,
+					    "failed to enable ATAPI AN (err_mask=0x%x)\n",
+					    err_mask);
+			else {
+				dev->flags |= ATA_DFLAG_AN;
+				atapi_an_string = ", ATAPI AN";
+			}
+		}
+
+		if (ata_id_cdb_intr(dev->id)) {
+			dev->flags |= ATA_DFLAG_CDB_INTR;
+			cdb_intr_string = ", CDB intr";
+		}
+
+		if (atapi_dmadir || (dev->quirks & ATA_QUIRK_ATAPI_DMADIR) ||
+		    atapi_id_dmadir(dev->id)) {
+			dev->flags |= ATA_DFLAG_DMADIR;
+			dma_dir_string = ", DMADIR";
+		}
+
+		if (ata_id_has_da(dev->id)) {
+			dev->flags |= ATA_DFLAG_DA;
+			zpodd_init(dev);
+		}
+
+		/* print device info to dmesg */
+		if (print_info)
+			ata_dev_info(dev,
+				     "ATAPI: %s, %s, max %s%s%s%s\n",
+				     modelbuf, fwrevbuf,
+				     ata_mode_string(xfer_mask),
+				     cdb_intr_string, atapi_an_string,
+				     dma_dir_string);
+	}
+
+	/* determine max_sectors */
+	dev->max_sectors = ATA_MAX_SECTORS;
+	if (dev->flags & ATA_DFLAG_LBA48)
+		dev->max_sectors = ATA_MAX_SECTORS_LBA48;
+
+	/* Limit PATA drive on SATA cable bridge transfers to udma5,
+	   200 sectors */
+	if (ata_dev_knobble(dev)) {
+		if (print_info)
+			ata_dev_info(dev, "applying bridge limits\n");
+		dev->udma_mask &= ATA_UDMA5;
+		dev->max_sectors = ATA_MAX_SECTORS;
+	}
+
+	if ((dev->class == ATA_DEV_ATAPI) &&
+	    (atapi_command_packet_set(id) == TYPE_TAPE)) {
+		dev->max_sectors = ATA_MAX_SECTORS_TAPE;
+		dev->quirks |= ATA_QUIRK_STUCK_ERR;
+	}
+
+	if (dev->quirks & ATA_QUIRK_MAX_SEC_128)
+		dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128,
+					 dev->max_sectors);
+
+	if (dev->quirks & ATA_QUIRK_MAX_SEC_1024)
+		dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_1024,
+					 dev->max_sectors);
+
+	if (dev->quirks & ATA_QUIRK_MAX_SEC_LBA48)
+		dev->max_sectors = ATA_MAX_SECTORS_LBA48;
+
+	if (ap->ops->dev_config)
+		ap->ops->dev_config(dev);
+
+	if (dev->quirks & ATA_QUIRK_DIAGNOSTIC) {
+		/* Let the user know. We don't want to disallow opens for
+		   rescue purposes, or in case the vendor is just a blithering
+		   idiot. Do this after the dev_config call as some controllers
+		   with buggy firmware may want to avoid reporting false device
+		   bugs */
+
+		if (print_info) {
+			ata_dev_warn(dev,
+"Drive reports diagnostics failure. This may indicate a drive\n");
+			ata_dev_warn(dev,
+"fault or invalid emulation. Contact drive vendor for information.\n");
+		}
+	}
+
+	if ((dev->quirks & ATA_QUIRK_FIRMWARE_WARN) && print_info) {
+		ata_dev_notice(dev, "WARNING: device requires firmware update to be fully functional\n");
+		ata_dev_notice(dev, "         contact the vendor or visit http://ata.wiki.kernel.org\n");
+	}
+
+	return 0;
+
+err_out_nosup:
+	return rc;
+}
+
+/**
+ *	ata_cable_40wire	-	return 40 wire cable type
+ *	@ap: port
+ *
+ *	Helper method for drivers which want to hardwire 40 wire cable
+ *	detection.
+ */
+
+int ata_cable_40wire(struct ata_port *ap)
+{
+	return ATA_CBL_PATA40;
+}
+EXPORT_SYMBOL_GPL(ata_cable_40wire);
+
+/**
+ *	ata_cable_80wire	-	return 80 wire cable type
+ *	@ap: port
+ *
+ *	Helper method for drivers which want to hardwire 80 wire cable
+ *	detection.
+ */
+
+int ata_cable_80wire(struct ata_port *ap)
+{
+	return ATA_CBL_PATA80;
+}
+EXPORT_SYMBOL_GPL(ata_cable_80wire);
+
+/**
+ *	ata_cable_unknown	-	return unknown PATA cable.
+ *	@ap: port
+ *
+ *	Helper method for drivers which have no PATA cable detection.
+ */
+
+int ata_cable_unknown(struct ata_port *ap)
+{
+	return ATA_CBL_PATA_UNK;
+}
+EXPORT_SYMBOL_GPL(ata_cable_unknown);
+
+/**
+ *	ata_cable_ignore	-	return ignored PATA cable.
+ *	@ap: port
+ *
+ *	Helper method for drivers which don't use cable type to limit
+ *	transfer mode.
+ */
+int ata_cable_ignore(struct ata_port *ap)
+{
+	return ATA_CBL_PATA_IGN;
+}
+EXPORT_SYMBOL_GPL(ata_cable_ignore);
+
+/**
+ *	ata_cable_sata	-	return SATA cable type
+ *	@ap: port
+ *
+ *	Helper method for drivers which have SATA cables
+ */
+
+int ata_cable_sata(struct ata_port *ap)
+{
+	return ATA_CBL_SATA;
+}
+EXPORT_SYMBOL_GPL(ata_cable_sata);
+
+/**
+ *	sata_print_link_status - Print SATA link status
+ *	@link: SATA link to printk link status about
+ *
+ *	This function prints link speed and status of a SATA link.
+ *
+ *	LOCKING:
+ *	None.
+ */
+static void sata_print_link_status(struct ata_link *link)
+{
+	u32 sstatus, scontrol, tmp;
+
+	if (sata_scr_read(link, SCR_STATUS, &sstatus))
+		return;
+	if (sata_scr_read(link, SCR_CONTROL, &scontrol))
+		return;
+
+	if (ata_phys_link_online(link)) {
+		tmp = (sstatus >> 4) & 0xf;
+		ata_link_info(link, "SATA link up %s (SStatus %X SControl %X)\n",
+			      sata_spd_string(tmp), sstatus, scontrol);
+	} else {
+		ata_link_info(link, "SATA link down (SStatus %X SControl %X)\n",
+			      sstatus, scontrol);
+	}
+}
+
+/**
+ *	ata_dev_pair		-	return other device on cable
+ *	@adev: device
+ *
+ *	Obtain the other device on the same cable, or if none is
+ *	present NULL is returned
+ */
+
+struct ata_device *ata_dev_pair(struct ata_device *adev)
+{
+	struct ata_link *link = adev->link;
+	struct ata_device *pair = &link->device[1 - adev->devno];
+	if (!ata_dev_enabled(pair))
+		return NULL;
+	return pair;
+}
+EXPORT_SYMBOL_GPL(ata_dev_pair);
+
+#ifdef CONFIG_ATA_ACPI
+/**
+ *	ata_timing_cycle2mode - find xfer mode for the specified cycle duration
+ *	@xfer_shift: ATA_SHIFT_* value for transfer type to examine.
+ *	@cycle: cycle duration in ns
+ *
+ *	Return matching xfer mode for @cycle.  The returned mode is of
+ *	the transfer type specified by @xfer_shift.  If @cycle is too
+ *	slow for @xfer_shift, 0xff is returned.  If @cycle is faster
+ *	than the fastest known mode, the fasted mode is returned.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Matching xfer_mode, 0xff if no match found.
+ */
+u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle)
+{
+	u8 base_mode = 0xff, last_mode = 0xff;
+	const struct ata_xfer_ent *ent;
+	const struct ata_timing *t;
+
+	for (ent = ata_xfer_tbl; ent->shift >= 0; ent++)
+		if (ent->shift == xfer_shift)
+			base_mode = ent->base;
+
+	for (t = ata_timing_find_mode(base_mode);
+	     t && ata_xfer_mode2shift(t->mode) == xfer_shift; t++) {
+		unsigned short this_cycle;
+
+		switch (xfer_shift) {
+		case ATA_SHIFT_PIO:
+		case ATA_SHIFT_MWDMA:
+			this_cycle = t->cycle;
+			break;
+		case ATA_SHIFT_UDMA:
+			this_cycle = t->udma;
+			break;
+		default:
+			return 0xff;
+		}
+
+		if (cycle > this_cycle)
+			break;
+
+		last_mode = t->mode;
+	}
+
+	return last_mode;
+}
+#endif
+
+/**
+ *	ata_down_xfermask_limit - adjust dev xfer masks downward
+ *	@dev: Device to adjust xfer masks
+ *	@sel: ATA_DNXFER_* selector
+ *
+ *	Adjust xfer masks of @dev downward.  Note that this function
+ *	does not apply the change.  Invoking ata_set_mode() afterwards
+ *	will apply the limit.
+ *
+ *	LOCKING:
+ *	Inherited from caller.
+ *
+ *	RETURNS:
+ *	0 on success, negative errno on failure
+ */
+int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel)
+{
+	char buf[32];
+	unsigned int orig_mask, xfer_mask;
+	unsigned int pio_mask, mwdma_mask, udma_mask;
+	int quiet, highbit;
+
+	quiet = !!(sel & ATA_DNXFER_QUIET);
+	sel &= ~ATA_DNXFER_QUIET;
+
+	xfer_mask = orig_mask = ata_pack_xfermask(dev->pio_mask,
+						  dev->mwdma_mask,
+						  dev->udma_mask);
+	ata_unpack_xfermask(xfer_mask, &pio_mask, &mwdma_mask, &udma_mask);
+
+	switch (sel) {
+	case ATA_DNXFER_PIO:
+		highbit = fls(pio_mask) - 1;
+		pio_mask &= ~(1 << highbit);
+		break;
+
+	case ATA_DNXFER_DMA:
+		if (udma_mask) {
+			highbit = fls(udma_mask) - 1;
+			udma_mask &= ~(1 << highbit);
+			if (!udma_mask)
+				return -ENOENT;
+		} else if (mwdma_mask) {
+			highbit = fls(mwdma_mask) - 1;
+			mwdma_mask &= ~(1 << highbit);
+			if (!mwdma_mask)
+				return -ENOENT;
+		}
+		break;
+
+	case ATA_DNXFER_40C:
+		udma_mask &= ATA_UDMA_MASK_40C;
+		break;
+
+	case ATA_DNXFER_FORCE_PIO0:
+		pio_mask &= 1;
+		fallthrough;
+	case ATA_DNXFER_FORCE_PIO:
+		mwdma_mask = 0;
+		udma_mask = 0;
+		break;
+
+	default:
+		BUG();
+	}
+
+	xfer_mask &= ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask);
+
+	if (!(xfer_mask & ATA_MASK_PIO) || xfer_mask == orig_mask)
+		return -ENOENT;
+
+	if (!quiet) {
+		if (xfer_mask & (ATA_MASK_MWDMA | ATA_MASK_UDMA))
+			snprintf(buf, sizeof(buf), "%s:%s",
+				 ata_mode_string(xfer_mask),
+				 ata_mode_string(xfer_mask & ATA_MASK_PIO));
+		else
+			snprintf(buf, sizeof(buf), "%s",
+				 ata_mode_string(xfer_mask));
+
+		ata_dev_warn(dev, "limiting speed to %s\n", buf);
+	}
+
+	ata_unpack_xfermask(xfer_mask, &dev->pio_mask, &dev->mwdma_mask,
+			    &dev->udma_mask);
+
+	return 0;
+}
+
+static int ata_dev_set_mode(struct ata_device *dev)
+{
+	struct ata_port *ap = dev->link->ap;
+	struct ata_eh_context *ehc = &dev->link->eh_context;
+	const bool nosetxfer = dev->quirks & ATA_QUIRK_NOSETXFER;
+	const char *dev_err_whine = "";
+	int ign_dev_err = 0;
+	unsigned int err_mask = 0;
+	int rc;
+
+	dev->flags &= ~ATA_DFLAG_PIO;
+	if (dev->xfer_shift == ATA_SHIFT_PIO)
+		dev->flags |= ATA_DFLAG_PIO;
+
+	if (nosetxfer && ap->flags & ATA_FLAG_SATA && ata_id_is_sata(dev->id))
+		dev_err_whine = " (SET_XFERMODE skipped)";
+	else {
+		if (nosetxfer)
+			ata_dev_warn(dev,
+				     "NOSETXFER but PATA detected - can't "
+				     "skip SETXFER, might malfunction\n");
+		err_mask = ata_dev_set_xfermode(dev);
+	}
+
+	if (err_mask & ~AC_ERR_DEV)
+		goto fail;
+
+	/* revalidate */
+	ehc->i.flags |= ATA_EHI_POST_SETMODE;
+	rc = ata_dev_revalidate(dev, ATA_DEV_UNKNOWN, 0);
+	ehc->i.flags &= ~ATA_EHI_POST_SETMODE;
+	if (rc)
+		return rc;
+
+	if (dev->xfer_shift == ATA_SHIFT_PIO) {
+		/* Old CFA may refuse this command, which is just fine */
+		if (ata_id_is_cfa(dev->id))
+			ign_dev_err = 1;
+		/* Catch several broken garbage emulations plus some pre
+		   ATA devices */
+		if (ata_id_major_version(dev->id) == 0 &&
+					dev->pio_mode <= XFER_PIO_2)
+			ign_dev_err = 1;
+		/* Some very old devices and some bad newer ones fail
+		   any kind of SET_XFERMODE request but support PIO0-2
+		   timings and no IORDY */
+		if (!ata_id_has_iordy(dev->id) && dev->pio_mode <= XFER_PIO_2)
+			ign_dev_err = 1;
+	}
+	/* Early MWDMA devices do DMA but don't allow DMA mode setting.
+	   Don't fail an MWDMA0 set IFF the device indicates it is in MWDMA0 */
+	if (dev->xfer_shift == ATA_SHIFT_MWDMA &&
+	    dev->dma_mode == XFER_MW_DMA_0 &&
+	    (dev->id[63] >> 8) & 1)
+		ign_dev_err = 1;
+
+	/* if the device is actually configured correctly, ignore dev err */
+	if (dev->xfer_mode == ata_xfer_mask2mode(ata_id_xfermask(dev->id)))
+		ign_dev_err = 1;
+
+	if (err_mask & AC_ERR_DEV) {
+		if (!ign_dev_err)
+			goto fail;
+		else
+			dev_err_whine = " (device error ignored)";
+	}
+
+	ata_dev_dbg(dev, "xfer_shift=%u, xfer_mode=0x%x\n",
+		    dev->xfer_shift, (int)dev->xfer_mode);
+
+	if (!(ehc->i.flags & ATA_EHI_QUIET) ||
+	    ehc->i.flags & ATA_EHI_DID_HARDRESET)
+		ata_dev_info(dev, "configured for %s%s\n",
+			     ata_mode_string(ata_xfer_mode2mask(dev->xfer_mode)),
+			     dev_err_whine);
+
+	return 0;
+
+ fail:
+	ata_dev_err(dev, "failed to set xfermode (err_mask=0x%x)\n", err_mask);
+	return -EIO;
+}
+
+/**
+ *	ata_do_set_mode - Program timings and issue SET FEATURES - XFER
+ *	@link: link on which timings will be programmed
+ *	@r_failed_dev: out parameter for failed device
+ *
+ *	Standard implementation of the function used to tune and set
+ *	ATA device disk transfer mode (PIO3, UDMA6, etc.).  If
+ *	ata_dev_set_mode() fails, pointer to the failing device is
+ *	returned in @r_failed_dev.
+ *
+ *	LOCKING:
+ *	PCI/etc. bus probe sem.
+ *
+ *	RETURNS:
+ *	0 on success, negative errno otherwise
+ */
+
+int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev)
+{
+	struct ata_port *ap = link->ap;
+	struct ata_device *dev;
+	int rc = 0, used_dma = 0, found = 0;
+
+	/* step 1: calculate xfer_mask */
+	ata_for_each_dev(dev, link, ENABLED) {
+		unsigned int pio_mask, dma_mask;
+		unsigned int mode_mask;
+
+		mode_mask = ATA_DMA_MASK_ATA;
+		if (dev->class == ATA_DEV_ATAPI)
+			mode_mask = ATA_DMA_MASK_ATAPI;
+		else if (ata_id_is_cfa(dev->id))
+			mode_mask = ATA_DMA_MASK_CFA;
+
+		ata_dev_xfermask(dev);
+		ata_force_xfermask(dev);
+
+		pio_mask = ata_pack_xfermask(dev->pio_mask, 0, 0);
+
+		if (libata_dma_mask & mode_mask)
+			dma_mask = ata_pack_xfermask(0, dev->mwdma_mask,
+						     dev->udma_mask);
+		else
+			dma_mask = 0;
+
+		dev->pio_mode = ata_xfer_mask2mode(pio_mask);
+		dev->dma_mode = ata_xfer_mask2mode(dma_mask);
+
+		found = 1;
+		if (ata_dma_enabled(dev))
+			used_dma = 1;
+	}
+	if (!found)
+		goto out;
+
+	/* step 2: always set host PIO timings */
+	ata_for_each_dev(dev, link, ENABLED) {
+		if (dev->pio_mode == 0xff) {
+			ata_dev_warn(dev, "no PIO support\n");
+			rc = -EINVAL;
+			goto out;
+		}
+
+		dev->xfer_mode = dev->pio_mode;
+		dev->xfer_shift = ATA_SHIFT_PIO;
+		if (ap->ops->set_piomode)
+			ap->ops->set_piomode(ap, dev);
+	}
+
+	/* step 3: set host DMA timings */
+	ata_for_each_dev(dev, link, ENABLED) {
+		if (!ata_dma_enabled(dev))
+			continue;
+
+		dev->xfer_mode = dev->dma_mode;
+		dev->xfer_shift = ata_xfer_mode2shift(dev->dma_mode);
+		if (ap->ops->set_dmamode)
+			ap->ops->set_dmamode(ap, dev);
+	}
+
+	/* step 4: update devices' xfer mode */
+	ata_for_each_dev(dev, link, ENABLED) {
+		rc = ata_dev_set_mode(dev);
+		if (rc)
+			goto out;
+	}
+
+	/* Record simplex status. If we selected DMA then the other
+	 * host channels are not permitted to do so.
+	 */
+	if (used_dma && (ap->host->flags & ATA_HOST_SIMPLEX))
+		ap->host->simplex_claimed = ap;
+
+ out:
+	if (rc)
+		*r_failed_dev = dev;
+	return rc;
+}
+EXPORT_SYMBOL_GPL(ata_do_set_mode);
+
+/**
+ *	ata_wait_ready - wait for link to become ready
+ *	@link: link to be waited on
+ *	@deadline: deadline jiffies for the operation
+ *	@check_ready: callback to check link readiness
+ *
+ *	Wait for @link to become ready.  @check_ready should return
+ *	positive number if @link is ready, 0 if it isn't, -ENODEV if
+ *	link doesn't seem to be occupied, other errno for other error
+ *	conditions.
+ *
+ *	Transient -ENODEV conditions are allowed for
+ *	ATA_TMOUT_FF_WAIT.
+ *
+ *	LOCKING:
+ *	EH context.
+ *
+ *	RETURNS:
+ *	0 if @link is ready before @deadline; otherwise, -errno.
+ */
+int ata_wait_ready(struct ata_link *link, unsigned long deadline,
+		   int (*check_ready)(struct ata_link *link))
+{
+	unsigned long start = jiffies;
+	unsigned long nodev_deadline;
+	int warned = 0;
+
+	/* choose which 0xff timeout to use, read comment in libata.h */
+	if (link->ap->host->flags & ATA_HOST_PARALLEL_SCAN)
+		nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT_LONG);
+	else
+		nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT);
+
+	/* Slave readiness can't be tested separately from master.  On
+	 * M/S emulation configuration, this function should be called
+	 * only on the master and it will handle both master and slave.
+	 */
+	WARN_ON(link == link->ap->slave_link);
+
+	if (time_after(nodev_deadline, deadline))
+		nodev_deadline = deadline;
+
+	while (1) {
+		unsigned long now = jiffies;
+		int ready, tmp;
+
+		ready = tmp = check_ready(link);
+		if (ready > 0)
+			return 0;
+
+		/*
+		 * -ENODEV could be transient.  Ignore -ENODEV if link
+		 * is online.  Also, some SATA devices take a long
+		 * time to clear 0xff after reset.  Wait for
+		 * ATA_TMOUT_FF_WAIT[_LONG] on -ENODEV if link isn't
+		 * offline.
+		 *
+		 * Note that some PATA controllers (pata_ali) explode
+		 * if status register is read more than once when
+		 * there's no device attached.
+		 */
+		if (ready == -ENODEV) {
+			if (ata_link_online(link))
+				ready = 0;
+			else if ((link->ap->flags & ATA_FLAG_SATA) &&
+				 !ata_link_offline(link) &&
+				 time_before(now, nodev_deadline))
+				ready = 0;
+		}
+
+		if (ready)
+			return ready;
+		if (time_after(now, deadline))
+			return -EBUSY;
+
+		if (!warned && time_after(now, start + 5 * HZ) &&
+		    (deadline - now > 3 * HZ)) {
+			ata_link_warn(link,
+				"link is slow to respond, please be patient "
+				"(ready=%d)\n", tmp);
+			warned = 1;
+		}
+
+		ata_msleep(link->ap, 50);
+	}
+}
+
+/**
+ *	ata_wait_after_reset - wait for link to become ready after reset
+ *	@link: link to be waited on
+ *	@deadline: deadline jiffies for the operation
+ *	@check_ready: callback to check link readiness
+ *
+ *	Wait for @link to become ready after reset.
+ *
+ *	LOCKING:
+ *	EH context.
+ *
+ *	RETURNS:
+ *	0 if @link is ready before @deadline; otherwise, -errno.
+ */
+int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
+				int (*check_ready)(struct ata_link *link))
+{
+	ata_msleep(link->ap, ATA_WAIT_AFTER_RESET);
+
+	return ata_wait_ready(link, deadline, check_ready);
+}
+EXPORT_SYMBOL_GPL(ata_wait_after_reset);
+
+/**
+ *	ata_std_prereset - prepare for reset
+ *	@link: ATA link to be reset
+ *	@deadline: deadline jiffies for the operation
+ *
+ *	@link is about to be reset.  Initialize it.  Failure from
+ *	prereset makes libata abort whole reset sequence and give up
+ *	that port, so prereset should be best-effort.  It does its
+ *	best to prepare for reset sequence but if things go wrong, it
+ *	should just whine, not fail.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	Always 0.
+ */
+int ata_std_prereset(struct ata_link *link, unsigned long deadline)
+{
+	struct ata_port *ap = link->ap;
+	struct ata_eh_context *ehc = &link->eh_context;
+	const unsigned int *timing = sata_ehc_deb_timing(ehc);
+	int rc;
+
+	/* if we're about to do hardreset, nothing more to do */
+	if (ehc->i.action & ATA_EH_HARDRESET)
+		return 0;
+
+	/* if SATA, resume link */
+	if (ap->flags & ATA_FLAG_SATA) {
+		rc = sata_link_resume(link, timing, deadline);
+		/* whine about phy resume failure but proceed */
+		if (rc && rc != -EOPNOTSUPP)
+			ata_link_warn(link,
+				      "failed to resume link for reset (errno=%d)\n",
+				      rc);
+	}
+
+	/* no point in trying softreset on offline link */
+	if (ata_phys_link_offline(link))
+		ehc->i.action &= ~ATA_EH_SOFTRESET;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ata_std_prereset);
+
+/**
+ *	ata_std_postreset - standard postreset callback
+ *	@link: the target ata_link
+ *	@classes: classes of attached devices
+ *
+ *	This function is invoked after a successful reset.  Note that
+ *	the device might have been reset more than once using
+ *	different reset methods before postreset is invoked.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ */
+void ata_std_postreset(struct ata_link *link, unsigned int *classes)
+{
+	u32 serror;
+
+	/* reset complete, clear SError */
+	if (!sata_scr_read(link, SCR_ERROR, &serror))
+		sata_scr_write(link, SCR_ERROR, serror);
+
+	/* print link status */
+	sata_print_link_status(link);
+}
+EXPORT_SYMBOL_GPL(ata_std_postreset);
+
+/**
+ *	ata_dev_same_device - Determine whether new ID matches configured device
+ *	@dev: device to compare against
+ *	@new_class: class of the new device
+ *	@new_id: IDENTIFY page of the new device
+ *
+ *	Compare @new_class and @new_id against @dev and determine
+ *	whether @dev is the device indicated by @new_class and
+ *	@new_id.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	1 if @dev matches @new_class and @new_id, 0 otherwise.
+ */
+static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class,
+			       const u16 *new_id)
+{
+	const u16 *old_id = dev->id;
+	unsigned char model[2][ATA_ID_PROD_LEN + 1];
+	unsigned char serial[2][ATA_ID_SERNO_LEN + 1];
+
+	if (dev->class != new_class) {
+		ata_dev_info(dev, "class mismatch %d != %d\n",
+			     dev->class, new_class);
+		return 0;
+	}
+
+	ata_id_c_string(old_id, model[0], ATA_ID_PROD, sizeof(model[0]));
+	ata_id_c_string(new_id, model[1], ATA_ID_PROD, sizeof(model[1]));
+	ata_id_c_string(old_id, serial[0], ATA_ID_SERNO, sizeof(serial[0]));
+	ata_id_c_string(new_id, serial[1], ATA_ID_SERNO, sizeof(serial[1]));
+
+	if (strcmp(model[0], model[1])) {
+		ata_dev_info(dev, "model number mismatch '%s' != '%s'\n",
+			     model[0], model[1]);
+		return 0;
+	}
+
+	if (strcmp(serial[0], serial[1])) {
+		ata_dev_info(dev, "serial number mismatch '%s' != '%s'\n",
+			     serial[0], serial[1]);
+		return 0;
+	}
+
+	return 1;
+}
+
+/**
+ *	ata_dev_reread_id - Re-read IDENTIFY data
+ *	@dev: target ATA device
+ *	@readid_flags: read ID flags
+ *
+ *	Re-read IDENTIFY page and make sure @dev is still attached to
+ *	the port.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	0 on success, negative errno otherwise
+ */
+int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags)
+{
+	unsigned int class = dev->class;
+	u16 *id = (void *)dev->sector_buf;
+	int rc;
+
+	/* read ID data */
+	rc = ata_dev_read_id(dev, &class, readid_flags, id);
+	if (rc)
+		return rc;
+
+	/* is the device still there? */
+	if (!ata_dev_same_device(dev, class, id))
+		return -ENODEV;
+
+	memcpy(dev->id, id, sizeof(id[0]) * ATA_ID_WORDS);
+	return 0;
+}
+
+/**
+ *	ata_dev_revalidate - Revalidate ATA device
+ *	@dev: device to revalidate
+ *	@new_class: new class code
+ *	@readid_flags: read ID flags
+ *
+ *	Re-read IDENTIFY page, make sure @dev is still attached to the
+ *	port and reconfigure it according to the new IDENTIFY page.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	0 on success, negative errno otherwise
+ */
+int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
+		       unsigned int readid_flags)
+{
+	u64 n_sectors = dev->n_sectors;
+	u64 n_native_sectors = dev->n_native_sectors;
+	int rc;
+
+	if (!ata_dev_enabled(dev))
+		return -ENODEV;
+
+	/* fail early if !ATA && !ATAPI to avoid issuing [P]IDENTIFY to PMP */
+	if (ata_class_enabled(new_class) && new_class == ATA_DEV_PMP) {
+		ata_dev_info(dev, "class mismatch %u != %u\n",
+			     dev->class, new_class);
+		rc = -ENODEV;
+		goto fail;
+	}
+
+	/* re-read ID */
+	rc = ata_dev_reread_id(dev, readid_flags);
+	if (rc)
+		goto fail;
+
+	/* configure device according to the new ID */
+	rc = ata_dev_configure(dev);
+	if (rc)
+		goto fail;
+
+	/* verify n_sectors hasn't changed */
+	if (dev->class != ATA_DEV_ATA || !n_sectors ||
+	    dev->n_sectors == n_sectors)
+		return 0;
+
+	/* n_sectors has changed */
+	ata_dev_warn(dev, "n_sectors mismatch %llu != %llu\n",
+		     (unsigned long long)n_sectors,
+		     (unsigned long long)dev->n_sectors);
+
+	/*
+	 * Something could have caused HPA to be unlocked
+	 * involuntarily.  If n_native_sectors hasn't changed and the
+	 * new size matches it, keep the device.
+	 */
+	if (dev->n_native_sectors == n_native_sectors &&
+	    dev->n_sectors > n_sectors && dev->n_sectors == n_native_sectors) {
+		ata_dev_warn(dev,
+			     "new n_sectors matches native, probably "
+			     "late HPA unlock, n_sectors updated\n");
+		/* use the larger n_sectors */
+		return 0;
+	}
+
+	/*
+	 * Some BIOSes boot w/o HPA but resume w/ HPA locked.  Try
+	 * unlocking HPA in those cases.
+	 *
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=15396
+	 */
+	if (dev->n_native_sectors == n_native_sectors &&
+	    dev->n_sectors < n_sectors && n_sectors == n_native_sectors &&
+	    !(dev->quirks & ATA_QUIRK_BROKEN_HPA)) {
+		ata_dev_warn(dev,
+			     "old n_sectors matches native, probably "
+			     "late HPA lock, will try to unlock HPA\n");
+		/* try unlocking HPA */
+		dev->flags |= ATA_DFLAG_UNLOCK_HPA;
+		rc = -EIO;
+	} else
+		rc = -ENODEV;
+
+	/* restore original n_[native_]sectors and fail */
+	dev->n_native_sectors = n_native_sectors;
+	dev->n_sectors = n_sectors;
+ fail:
+	ata_dev_err(dev, "revalidation failed (errno=%d)\n", rc);
+	return rc;
+}
+
+static const char * const ata_quirk_names[] = {
+	[__ATA_QUIRK_DIAGNOSTIC]	= "diagnostic",
+	[__ATA_QUIRK_NODMA]		= "nodma",
+	[__ATA_QUIRK_NONCQ]		= "noncq",
+	[__ATA_QUIRK_MAX_SEC_128]	= "maxsec128",
+	[__ATA_QUIRK_BROKEN_HPA]	= "brokenhpa",
+	[__ATA_QUIRK_DISABLE]		= "disable",
+	[__ATA_QUIRK_HPA_SIZE]		= "hpasize",
+	[__ATA_QUIRK_IVB]		= "ivb",
+	[__ATA_QUIRK_STUCK_ERR]		= "stuckerr",
+	[__ATA_QUIRK_BRIDGE_OK]		= "bridgeok",
+	[__ATA_QUIRK_ATAPI_MOD16_DMA]	= "atapimod16dma",
+	[__ATA_QUIRK_FIRMWARE_WARN]	= "firmwarewarn",
+	[__ATA_QUIRK_1_5_GBPS]		= "1.5gbps",
+	[__ATA_QUIRK_NOSETXFER]		= "nosetxfer",
+	[__ATA_QUIRK_BROKEN_FPDMA_AA]	= "brokenfpdmaaa",
+	[__ATA_QUIRK_DUMP_ID]		= "dumpid",
+	[__ATA_QUIRK_MAX_SEC_LBA48]	= "maxseclba48",
+	[__ATA_QUIRK_ATAPI_DMADIR]	= "atapidmadir",
+	[__ATA_QUIRK_NO_NCQ_TRIM]	= "noncqtrim",
+	[__ATA_QUIRK_NOLPM]		= "nolpm",
+	[__ATA_QUIRK_WD_BROKEN_LPM]	= "wdbrokenlpm",
+	[__ATA_QUIRK_ZERO_AFTER_TRIM]	= "zeroaftertrim",
+	[__ATA_QUIRK_NO_DMA_LOG]	= "nodmalog",
+	[__ATA_QUIRK_NOTRIM]		= "notrim",
+	[__ATA_QUIRK_MAX_SEC_1024]	= "maxsec1024",
+	[__ATA_QUIRK_MAX_TRIM_128M]	= "maxtrim128m",
+	[__ATA_QUIRK_NO_NCQ_ON_ATI]	= "noncqonati",
+	[__ATA_QUIRK_NO_ID_DEV_LOG]	= "noiddevlog",
+	[__ATA_QUIRK_NO_LOG_DIR]	= "nologdir",
+	[__ATA_QUIRK_NO_FUA]		= "nofua",
+};
+
+static void ata_dev_print_quirks(const struct ata_device *dev,
+				 const char *model, const char *rev,
+				 unsigned int quirks)
+{
+	struct ata_eh_context *ehc = &dev->link->eh_context;
+	int n = 0, i;
+	size_t sz;
+	char *str;
+
+	if (!ata_dev_print_info(dev) || ehc->i.flags & ATA_EHI_DID_PRINT_QUIRKS)
+		return;
+
+	ehc->i.flags |= ATA_EHI_DID_PRINT_QUIRKS;
+
+	if (!quirks)
+		return;
+
+	sz = 64 + ARRAY_SIZE(ata_quirk_names) * 16;
+	str = kmalloc(sz, GFP_KERNEL);
+	if (!str)
+		return;
+
+	n = snprintf(str, sz, "Model '%s', rev '%s', applying quirks:",
+		     model, rev);
+
+	for (i = 0; i < ARRAY_SIZE(ata_quirk_names); i++) {
+		if (quirks & (1U << i))
+			n += snprintf(str + n, sz - n,
+				      " %s", ata_quirk_names[i]);
+	}
+
+	ata_dev_warn(dev, "%s\n", str);
+
+	kfree(str);
+}
+
+struct ata_dev_quirks_entry {
+	const char *model_num;
+	const char *model_rev;
+	unsigned int quirks;
+};
+
+static const struct ata_dev_quirks_entry __ata_dev_quirks[] = {
+	/* Devices with DMA related problems under Linux */
+	{ "WDC AC11000H",	NULL,		ATA_QUIRK_NODMA },
+	{ "WDC AC22100H",	NULL,		ATA_QUIRK_NODMA },
+	{ "WDC AC32500H",	NULL,		ATA_QUIRK_NODMA },
+	{ "WDC AC33100H",	NULL,		ATA_QUIRK_NODMA },
+	{ "WDC AC31600H",	NULL,		ATA_QUIRK_NODMA },
+	{ "WDC AC32100H",	"24.09P07",	ATA_QUIRK_NODMA },
+	{ "WDC AC23200L",	"21.10N21",	ATA_QUIRK_NODMA },
+	{ "Compaq CRD-8241B",	NULL,		ATA_QUIRK_NODMA },
+	{ "CRD-8400B",		NULL,		ATA_QUIRK_NODMA },
+	{ "CRD-848[02]B",	NULL,		ATA_QUIRK_NODMA },
+	{ "CRD-84",		NULL,		ATA_QUIRK_NODMA },
+	{ "SanDisk SDP3B",	NULL,		ATA_QUIRK_NODMA },
+	{ "SanDisk SDP3B-64",	NULL,		ATA_QUIRK_NODMA },
+	{ "SANYO CD-ROM CRD",	NULL,		ATA_QUIRK_NODMA },
+	{ "HITACHI CDR-8",	NULL,		ATA_QUIRK_NODMA },
+	{ "HITACHI CDR-8[34]35", NULL,		ATA_QUIRK_NODMA },
+	{ "Toshiba CD-ROM XM-6202B", NULL,	ATA_QUIRK_NODMA },
+	{ "TOSHIBA CD-ROM XM-1702BC", NULL,	ATA_QUIRK_NODMA },
+	{ "CD-532E-A",		NULL,		ATA_QUIRK_NODMA },
+	{ "E-IDE CD-ROM CR-840", NULL,		ATA_QUIRK_NODMA },
+	{ "CD-ROM Drive/F5A",	NULL,		ATA_QUIRK_NODMA },
+	{ "WPI CDD-820",	NULL,		ATA_QUIRK_NODMA },
+	{ "SAMSUNG CD-ROM SC-148C", NULL,	ATA_QUIRK_NODMA },
+	{ "SAMSUNG CD-ROM SC",	NULL,		ATA_QUIRK_NODMA },
+	{ "ATAPI CD-ROM DRIVE 40X MAXIMUM", NULL, ATA_QUIRK_NODMA },
+	{ "_NEC DV5800A",	NULL,		ATA_QUIRK_NODMA },
+	{ "SAMSUNG CD-ROM SN-124", "N001",	ATA_QUIRK_NODMA },
+	{ "Seagate STT20000A", NULL,		ATA_QUIRK_NODMA },
+	{ " 2GB ATA Flash Disk", "ADMA428M",	ATA_QUIRK_NODMA },
+	{ "VRFDFC22048UCHC-TE*", NULL,		ATA_QUIRK_NODMA },
+	/* Odd clown on sil3726/4726 PMPs */
+	{ "Config  Disk",	NULL,		ATA_QUIRK_DISABLE },
+	/* Similar story with ASMedia 1092 */
+	{ "ASMT109x- Config",	NULL,		ATA_QUIRK_DISABLE },
+
+	/* Weird ATAPI devices */
+	{ "TORiSAN DVD-ROM DRD-N216", NULL,	ATA_QUIRK_MAX_SEC_128 },
+	{ "QUANTUM DAT    DAT72-000", NULL,	ATA_QUIRK_ATAPI_MOD16_DMA },
+	{ "Slimtype DVD A  DS8A8SH", NULL,	ATA_QUIRK_MAX_SEC_LBA48 },
+	{ "Slimtype DVD A  DS8A9SH", NULL,	ATA_QUIRK_MAX_SEC_LBA48 },
+
+	/*
+	 * Causes silent data corruption with higher max sects.
+	 * http://lkml.kernel.org/g/x49wpy40ysk.fsf@segfault.boston.devel.redhat.com
+	 */
+	{ "ST380013AS",		"3.20",		ATA_QUIRK_MAX_SEC_1024 },
+
+	/*
+	 * These devices time out with higher max sects.
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=121671
+	 */
+	{ "LITEON CX1-JB*-HP",	NULL,		ATA_QUIRK_MAX_SEC_1024 },
+	{ "LITEON EP1-*",	NULL,		ATA_QUIRK_MAX_SEC_1024 },
+
+	/* Devices we expect to fail diagnostics */
+
+	/* Devices where NCQ should be avoided */
+	/* NCQ is slow */
+	{ "WDC WD740ADFD-00",	NULL,		ATA_QUIRK_NONCQ },
+	{ "WDC WD740ADFD-00NLR1", NULL,		ATA_QUIRK_NONCQ },
+	/* http://thread.gmane.org/gmane.linux.ide/14907 */
+	{ "FUJITSU MHT2060BH",	NULL,		ATA_QUIRK_NONCQ },
+	/* NCQ is broken */
+	{ "Maxtor *",		"BANC*",	ATA_QUIRK_NONCQ },
+	{ "Maxtor 7V300F0",	"VA111630",	ATA_QUIRK_NONCQ },
+	{ "ST380817AS",		"3.42",		ATA_QUIRK_NONCQ },
+	{ "ST3160023AS",	"3.42",		ATA_QUIRK_NONCQ },
+	{ "OCZ CORE_SSD",	"02.10104",	ATA_QUIRK_NONCQ },
+
+	/* Seagate NCQ + FLUSH CACHE firmware bug */
+	{ "ST31500341AS",	"SD1[5-9]",	ATA_QUIRK_NONCQ |
+						ATA_QUIRK_FIRMWARE_WARN },
+
+	{ "ST31000333AS",	"SD1[5-9]",	ATA_QUIRK_NONCQ |
+						ATA_QUIRK_FIRMWARE_WARN },
+
+	{ "ST3640[36]23AS",	"SD1[5-9]",	ATA_QUIRK_NONCQ |
+						ATA_QUIRK_FIRMWARE_WARN },
+
+	{ "ST3320[68]13AS",	"SD1[5-9]",	ATA_QUIRK_NONCQ |
+						ATA_QUIRK_FIRMWARE_WARN },
+
+	/* drives which fail FPDMA_AA activation (some may freeze afterwards)
+	   the ST disks also have LPM issues */
+	{ "ST1000LM024 HN-M101MBB", NULL,	ATA_QUIRK_BROKEN_FPDMA_AA |
+						ATA_QUIRK_NOLPM },
+	{ "VB0250EAVER",	"HPG7",		ATA_QUIRK_BROKEN_FPDMA_AA },
+
+	/* Blacklist entries taken from Silicon Image 3124/3132
+	   Windows driver .inf file - also several Linux problem reports */
+	{ "HTS541060G9SA00",    "MB3OC60D",     ATA_QUIRK_NONCQ },
+	{ "HTS541080G9SA00",    "MB4OC60D",     ATA_QUIRK_NONCQ },
+	{ "HTS541010G9SA00",    "MBZOC60D",     ATA_QUIRK_NONCQ },
+
+	/* https://bugzilla.kernel.org/show_bug.cgi?id=15573 */
+	{ "C300-CTFDDAC128MAG",	"0001",		ATA_QUIRK_NONCQ },
+
+	/* Sandisk SD7/8/9s lock up hard on large trims */
+	{ "SanDisk SD[789]*",	NULL,		ATA_QUIRK_MAX_TRIM_128M },
+
+	/* devices which puke on READ_NATIVE_MAX */
+	{ "HDS724040KLSA80",	"KFAOA20N",	ATA_QUIRK_BROKEN_HPA },
+	{ "WDC WD3200JD-00KLB0", "WD-WCAMR1130137", ATA_QUIRK_BROKEN_HPA },
+	{ "WDC WD2500JD-00HBB0", "WD-WMAL71490727", ATA_QUIRK_BROKEN_HPA },
+	{ "MAXTOR 6L080L4",	"A93.0500",	ATA_QUIRK_BROKEN_HPA },
+
+	/* this one allows HPA unlocking but fails IOs on the area */
+	{ "OCZ-VERTEX",		    "1.30",	ATA_QUIRK_BROKEN_HPA },
+
+	/* Devices which report 1 sector over size HPA */
+	{ "ST340823A",		NULL,		ATA_QUIRK_HPA_SIZE },
+	{ "ST320413A",		NULL,		ATA_QUIRK_HPA_SIZE },
+	{ "ST310211A",		NULL,		ATA_QUIRK_HPA_SIZE },
+
+	/* Devices which get the IVB wrong */
+	{ "QUANTUM FIREBALLlct10 05", "A03.0900", ATA_QUIRK_IVB },
+	/* Maybe we should just add all TSSTcorp devices... */
+	{ "TSSTcorp CDDVDW SH-S202[HJN]", "SB0[01]",  ATA_QUIRK_IVB },
+
+	/* Devices that do not need bridging limits applied */
+	{ "MTRON MSP-SATA*",		NULL,	ATA_QUIRK_BRIDGE_OK },
+	{ "BUFFALO HD-QSU2/R5",		NULL,	ATA_QUIRK_BRIDGE_OK },
+
+	/* Devices which aren't very happy with higher link speeds */
+	{ "WD My Book",			NULL,	ATA_QUIRK_1_5_GBPS },
+	{ "Seagate FreeAgent GoFlex",	NULL,	ATA_QUIRK_1_5_GBPS },
+
+	/*
+	 * Devices which choke on SETXFER.  Applies only if both the
+	 * device and controller are SATA.
+	 */
+	{ "PIONEER DVD-RW  DVRTD08",	NULL,	ATA_QUIRK_NOSETXFER },
+	{ "PIONEER DVD-RW  DVRTD08A",	NULL,	ATA_QUIRK_NOSETXFER },
+	{ "PIONEER DVD-RW  DVR-215",	NULL,	ATA_QUIRK_NOSETXFER },
+	{ "PIONEER DVD-RW  DVR-212D",	NULL,	ATA_QUIRK_NOSETXFER },
+	{ "PIONEER DVD-RW  DVR-216D",	NULL,	ATA_QUIRK_NOSETXFER },
+
+	/* These specific Pioneer models have LPM issues */
+	{ "PIONEER BD-RW   BDR-207M",	NULL,	ATA_QUIRK_NOLPM },
+	{ "PIONEER BD-RW   BDR-205",	NULL,	ATA_QUIRK_NOLPM },
+
+	/* Crucial devices with broken LPM support */
+	{ "CT*0BX*00SSD1",		NULL,	ATA_QUIRK_NOLPM },
+
+	/* 512GB MX100 with MU01 firmware has both queued TRIM and LPM issues */
+	{ "Crucial_CT512MX100*",	"MU01",	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NOLPM },
+	/* 512GB MX100 with newer firmware has only LPM issues */
+	{ "Crucial_CT512MX100*",	NULL,	ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NOLPM },
+
+	/* 480GB+ M500 SSDs have both queued TRIM and LPM issues */
+	{ "Crucial_CT480M500*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NOLPM },
+	{ "Crucial_CT960M500*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NOLPM },
+
+	/* AMD Radeon devices with broken LPM support */
+	{ "R3SL240G",			NULL,	ATA_QUIRK_NOLPM },
+
+	/* Apacer models with LPM issues */
+	{ "Apacer AS340*",		NULL,	ATA_QUIRK_NOLPM },
+
+	/* These specific Samsung models/firmware-revs do not handle LPM well */
+	{ "SAMSUNG MZMPC128HBFU-000MV", "CXM14M1Q", ATA_QUIRK_NOLPM },
+	{ "SAMSUNG SSD PM830 mSATA *",  "CXM13D1Q", ATA_QUIRK_NOLPM },
+	{ "SAMSUNG MZ7TD256HAFV-000L9", NULL,       ATA_QUIRK_NOLPM },
+	{ "SAMSUNG MZ7TE512HMHP-000L1", "EXT06L0Q", ATA_QUIRK_NOLPM },
+
+	/* devices that don't properly handle queued TRIM commands */
+	{ "Micron_M500IT_*",		"MU01",	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Micron_M500_*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Micron_M5[15]0_*",		"MU01",	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Micron_1100_*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM, },
+	{ "Crucial_CT*M500*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Crucial_CT*M550*",		"MU01",	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Crucial_CT*MX100*",		"MU01",	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Samsung SSD 840 EVO*",	NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_NO_DMA_LOG |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Samsung SSD 840*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Samsung SSD 850*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Samsung SSD 860*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NO_NCQ_ON_ATI },
+	{ "Samsung SSD 870*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NO_NCQ_ON_ATI },
+	{ "SAMSUNG*MZ7LH*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NO_NCQ_ON_ATI, },
+	{ "FCCT*M500*",			NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+
+	/* devices that don't properly handle TRIM commands */
+	{ "SuperSSpeed S238*",		NULL,	ATA_QUIRK_NOTRIM },
+	{ "M88V29*",			NULL,	ATA_QUIRK_NOTRIM },
+
+	/*
+	 * As defined, the DRAT (Deterministic Read After Trim) and RZAT
+	 * (Return Zero After Trim) flags in the ATA Command Set are
+	 * unreliable in the sense that they only define what happens if
+	 * the device successfully executed the DSM TRIM command. TRIM
+	 * is only advisory, however, and the device is free to silently
+	 * ignore all or parts of the request.
+	 *
+	 * Whitelist drives that are known to reliably return zeroes
+	 * after TRIM.
+	 */
+
+	/*
+	 * The intel 510 drive has buggy DRAT/RZAT. Explicitly exclude
+	 * that model before whitelisting all other intel SSDs.
+	 */
+	{ "INTEL*SSDSC2MH*",		NULL,	0 },
+
+	{ "Micron*",			NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Crucial*",			NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "INTEL*SSD*",			NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "SSD*INTEL*",			NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Samsung*SSD*",		NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "SAMSUNG*SSD*",		NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "SAMSUNG*MZ7KM*",		NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "ST[1248][0248]0[FH]*",	NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+
+	/*
+	 * Some WD SATA-I drives spin up and down erratically when the link
+	 * is put into the slumber mode.  We don't have full list of the
+	 * affected devices.  Disable LPM if the device matches one of the
+	 * known prefixes and is SATA-1.  As a side effect LPM partial is
+	 * lost too.
+	 *
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=57211
+	 */
+	{ "WDC WD800JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+	{ "WDC WD1200JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+	{ "WDC WD1600JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+	{ "WDC WD2000JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+	{ "WDC WD2500JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+	{ "WDC WD3000JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+	{ "WDC WD3200JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+
+	/*
+	 * This sata dom device goes on a walkabout when the ATA_LOG_DIRECTORY
+	 * log page is accessed. Ensure we never ask for this log page with
+	 * these devices.
+	 */
+	{ "SATADOM-ML 3ME",		NULL,	ATA_QUIRK_NO_LOG_DIR },
+
+	/* Buggy FUA */
+	{ "Maxtor",		"BANC1G10",	ATA_QUIRK_NO_FUA },
+	{ "WDC*WD2500J*",	NULL,		ATA_QUIRK_NO_FUA },
+	{ "OCZ-VERTEX*",	NULL,		ATA_QUIRK_NO_FUA },
+	{ "INTEL*SSDSC2CT*",	NULL,		ATA_QUIRK_NO_FUA },
+
+	/* End Marker */
+	{ }
+};
+
+static unsigned int ata_dev_quirks(const struct ata_device *dev)
+{
+	unsigned char model_num[ATA_ID_PROD_LEN + 1];
+	unsigned char model_rev[ATA_ID_FW_REV_LEN + 1];
+	const struct ata_dev_quirks_entry *ad = __ata_dev_quirks;
+
+	/* dev->quirks is an unsigned int. */
+	BUILD_BUG_ON(__ATA_QUIRK_MAX > 32);
+
+	ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
+	ata_id_c_string(dev->id, model_rev, ATA_ID_FW_REV, sizeof(model_rev));
+
+	while (ad->model_num) {
+		if (glob_match(ad->model_num, model_num) &&
+		    (!ad->model_rev || glob_match(ad->model_rev, model_rev))) {
+			ata_dev_print_quirks(dev, model_num, model_rev,
+					     ad->quirks);
+			return ad->quirks;
+		}
+		ad++;
+	}
+	return 0;
+}
+
+static bool ata_dev_nodma(const struct ata_device *dev)
+{
+	/*
+	 * We do not support polling DMA. Deny DMA for those ATAPI devices
+	 * with CDB-intr (and use PIO) if the LLDD handles only interrupts in
+	 * the HSM_ST_LAST state.
+	 */
+	if ((dev->link->ap->flags & ATA_FLAG_PIO_POLLING) &&
+	    (dev->flags & ATA_DFLAG_CDB_INTR))
+		return true;
+	return dev->quirks & ATA_QUIRK_NODMA;
+}
+
+/**
+ *	ata_is_40wire		-	check drive side detection
+ *	@dev: device
+ *
+ *	Perform drive side detection decoding, allowing for device vendors
+ *	who can't follow the documentation.
+ */
+
+static int ata_is_40wire(struct ata_device *dev)
+{
+	if (dev->quirks & ATA_QUIRK_IVB)
+		return ata_drive_40wire_relaxed(dev->id);
+	return ata_drive_40wire(dev->id);
+}
+
+/**
+ *	cable_is_40wire		-	40/80/SATA decider
+ *	@ap: port to consider
+ *
+ *	This function encapsulates the policy for speed management
+ *	in one place. At the moment we don't cache the result but
+ *	there is a good case for setting ap->cbl to the result when
+ *	we are called with unknown cables (and figuring out if it
+ *	impacts hotplug at all).
+ *
+ *	Return 1 if the cable appears to be 40 wire.
+ */
+
+static int cable_is_40wire(struct ata_port *ap)
+{
+	struct ata_link *link;
+	struct ata_device *dev;
+
+	/* If the controller thinks we are 40 wire, we are. */
+	if (ap->cbl == ATA_CBL_PATA40)
+		return 1;
+
+	/* If the controller thinks we are 80 wire, we are. */
+	if (ap->cbl == ATA_CBL_PATA80 || ap->cbl == ATA_CBL_SATA)
+		return 0;
+
+	/* If the system is known to be 40 wire short cable (eg
+	 * laptop), then we allow 80 wire modes even if the drive
+	 * isn't sure.
+	 */
+	if (ap->cbl == ATA_CBL_PATA40_SHORT)
+		return 0;
+
+	/* If the controller doesn't know, we scan.
+	 *
+	 * Note: We look for all 40 wire detects at this point.  Any
+	 *       80 wire detect is taken to be 80 wire cable because
+	 * - in many setups only the one drive (slave if present) will
+	 *   give a valid detect
+	 * - if you have a non detect capable drive you don't want it
+	 *   to colour the choice
+	 */
+	ata_for_each_link(link, ap, EDGE) {
+		ata_for_each_dev(dev, link, ENABLED) {
+			if (!ata_is_40wire(dev))
+				return 0;
+		}
+	}
+	return 1;
+}
+
+/**
+ *	ata_dev_xfermask - Compute supported xfermask of the given device
+ *	@dev: Device to compute xfermask for
+ *
+ *	Compute supported xfermask of @dev and store it in
+ *	dev->*_mask.  This function is responsible for applying all
+ *	known limits including host controller limits, device quirks, etc...
+ *
+ *	LOCKING:
+ *	None.
+ */
+static void ata_dev_xfermask(struct ata_device *dev)
+{
+	struct ata_link *link = dev->link;
+	struct ata_port *ap = link->ap;
+	struct ata_host *host = ap->host;
+	unsigned int xfer_mask;
+
+	/* controller modes available */
+	xfer_mask = ata_pack_xfermask(ap->pio_mask,
+				      ap->mwdma_mask, ap->udma_mask);
+
+	/* drive modes available */
+	xfer_mask &= ata_pack_xfermask(dev->pio_mask,
+				       dev->mwdma_mask, dev->udma_mask);
+	xfer_mask &= ata_id_xfermask(dev->id);
+
+	/*
+	 *	CFA Advanced TrueIDE timings are not allowed on a shared
+	 *	cable
+	 */
+	if (ata_dev_pair(dev)) {
+		/* No PIO5 or PIO6 */
+		xfer_mask &= ~(0x03 << (ATA_SHIFT_PIO + 5));
+		/* No MWDMA3 or MWDMA 4 */
+		xfer_mask &= ~(0x03 << (ATA_SHIFT_MWDMA + 3));
+	}
+
+	if (ata_dev_nodma(dev)) {
+		xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
+		ata_dev_warn(dev,
+			     "device does not support DMA, disabling DMA\n");
+	}
+
+	if ((host->flags & ATA_HOST_SIMPLEX) &&
+	    host->simplex_claimed && host->simplex_claimed != ap) {
+		xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
+		ata_dev_warn(dev,
+			     "simplex DMA is claimed by other device, disabling DMA\n");
+	}
+
+	if (ap->flags & ATA_FLAG_NO_IORDY)
+		xfer_mask &= ata_pio_mask_no_iordy(dev);
+
+	if (ap->ops->mode_filter)
+		xfer_mask = ap->ops->mode_filter(dev, xfer_mask);
+
+	/* Apply cable rule here.  Don't apply it early because when
+	 * we handle hot plug the cable type can itself change.
+	 * Check this last so that we know if the transfer rate was
+	 * solely limited by the cable.
+	 * Unknown or 80 wire cables reported host side are checked
+	 * drive side as well. Cases where we know a 40wire cable
+	 * is used safely for 80 are not checked here.
+	 */
+	if (xfer_mask & (0xF8 << ATA_SHIFT_UDMA))
+		/* UDMA/44 or higher would be available */
+		if (cable_is_40wire(ap)) {
+			ata_dev_warn(dev,
+				     "limited to UDMA/33 due to 40-wire cable\n");
+			xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA);
+		}
+
+	ata_unpack_xfermask(xfer_mask, &dev->pio_mask,
+			    &dev->mwdma_mask, &dev->udma_mask);
+}
+
+/**
+ *	ata_dev_set_xfermode - Issue SET FEATURES - XFER MODE command
+ *	@dev: Device to which command will be sent
+ *
+ *	Issue SET FEATURES - XFER MODE command to device @dev
+ *	on port @ap.
+ *
+ *	LOCKING:
+ *	PCI/etc. bus probe sem.
+ *
+ *	RETURNS:
+ *	0 on success, AC_ERR_* mask otherwise.
+ */
+
+static unsigned int ata_dev_set_xfermode(struct ata_device *dev)
+{
+	struct ata_taskfile tf;
+
+	/* set up set-features taskfile */
+	ata_dev_dbg(dev, "set features - xfer mode\n");
+
+	/* Some controllers and ATAPI devices show flaky interrupt
+	 * behavior after setting xfer mode.  Use polling instead.
+	 */
+	ata_tf_init(dev, &tf);
+	tf.command = ATA_CMD_SET_FEATURES;
+	tf.feature = SETFEATURES_XFER;
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_POLLING;
+	tf.protocol = ATA_PROT_NODATA;
+	/* If we are using IORDY we must send the mode setting command */
+	if (ata_pio_need_iordy(dev))
+		tf.nsect = dev->xfer_mode;
+	/* If the device has IORDY and the controller does not - turn it off */
+ 	else if (ata_id_has_iordy(dev->id))
+		tf.nsect = 0x01;
+	else /* In the ancient relic department - skip all of this */
+		return 0;
+
+	/*
+	 * On some disks, this command causes spin-up, so we need longer
+	 * timeout.
+	 */
+	return ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 15000);
+}
+
+/**
+ *	ata_dev_set_feature - Issue SET FEATURES
+ *	@dev: Device to which command will be sent
+ *	@subcmd: The SET FEATURES subcommand to be sent
+ *	@action: The sector count represents a subcommand specific action
+ *
+ *	Issue SET FEATURES command to device @dev on port @ap with sector count
+ *
+ *	LOCKING:
+ *	PCI/etc. bus probe sem.
+ *
+ *	RETURNS:
+ *	0 on success, AC_ERR_* mask otherwise.
+ */
+unsigned int ata_dev_set_feature(struct ata_device *dev, u8 subcmd, u8 action)
+{
+	struct ata_taskfile tf;
+	unsigned int timeout = 0;
+
+	/* set up set-features taskfile */
+	ata_dev_dbg(dev, "set features\n");
+
+	ata_tf_init(dev, &tf);
+	tf.command = ATA_CMD_SET_FEATURES;
+	tf.feature = subcmd;
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
+	tf.protocol = ATA_PROT_NODATA;
+	tf.nsect = action;
+
+	if (subcmd == SETFEATURES_SPINUP)
+		timeout = ata_probe_timeout ?
+			  ata_probe_timeout * 1000 : SETFEATURES_SPINUP_TIMEOUT;
+
+	return ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, timeout);
+}
+EXPORT_SYMBOL_GPL(ata_dev_set_feature);
+
+/**
+ *	ata_dev_init_params - Issue INIT DEV PARAMS command
+ *	@dev: Device to which command will be sent
+ *	@heads: Number of heads (taskfile parameter)
+ *	@sectors: Number of sectors (taskfile parameter)
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	0 on success, AC_ERR_* mask otherwise.
+ */
+static unsigned int ata_dev_init_params(struct ata_device *dev,
+					u16 heads, u16 sectors)
+{
+	struct ata_taskfile tf;
+	unsigned int err_mask;
+
+	/* Number of sectors per track 1-255. Number of heads 1-16 */
+	if (sectors < 1 || sectors > 255 || heads < 1 || heads > 16)
+		return AC_ERR_INVALID;
+
+	/* set up init dev params taskfile */
+	ata_dev_dbg(dev, "init dev params \n");
+
+	ata_tf_init(dev, &tf);
+	tf.command = ATA_CMD_INIT_DEV_PARAMS;
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
+	tf.protocol = ATA_PROT_NODATA;
+	tf.nsect = sectors;
+	tf.device |= (heads - 1) & 0x0f; /* max head = num. of heads - 1 */
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+	/* A clean abort indicates an original or just out of spec drive
+	   and we should continue as we issue the setup based on the
+	   drive reported working geometry */
+	if (err_mask == AC_ERR_DEV && (tf.error & ATA_ABORTED))
+		err_mask = 0;
+
+	return err_mask;
+}
+
+/**
+ *	atapi_check_dma - Check whether ATAPI DMA can be supported
+ *	@qc: Metadata associated with taskfile to check
+ *
+ *	Allow low-level driver to filter ATA PACKET commands, returning
+ *	a status indicating whether or not it is OK to use DMA for the
+ *	supplied PACKET command.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ *
+ *	RETURNS: 0 when ATAPI DMA can be used
+ *               nonzero otherwise
+ */
+int atapi_check_dma(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+
+	/* Don't allow DMA if it isn't multiple of 16 bytes.  Quite a
+	 * few ATAPI devices choke on such DMA requests.
+	 */
+	if (!(qc->dev->quirks & ATA_QUIRK_ATAPI_MOD16_DMA) &&
+	    unlikely(qc->nbytes & 15))
+		return 1;
+
+	if (ap->ops->check_atapi_dma)
+		return ap->ops->check_atapi_dma(qc);
+
+	return 0;
+}
+
+/**
+ *	ata_std_qc_defer - Check whether a qc needs to be deferred
+ *	@qc: ATA command in question
+ *
+ *	Non-NCQ commands cannot run with any other command, NCQ or
+ *	not.  As upper layer only knows the queue depth, we are
+ *	responsible for maintaining exclusion.  This function checks
+ *	whether a new command @qc can be issued.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ *
+ *	RETURNS:
+ *	ATA_DEFER_* if deferring is needed, 0 otherwise.
+ */
+int ata_std_qc_defer(struct ata_queued_cmd *qc)
+{
+	struct ata_link *link = qc->dev->link;
+
+	if (ata_is_ncq(qc->tf.protocol)) {
+		if (!ata_tag_valid(link->active_tag))
+			return 0;
+	} else {
+		if (!ata_tag_valid(link->active_tag) && !link->sactive)
+			return 0;
+	}
+
+	return ATA_DEFER_LINK;
+}
+EXPORT_SYMBOL_GPL(ata_std_qc_defer);
+
+/**
+ *	ata_sg_init - Associate command with scatter-gather table.
+ *	@qc: Command to be associated
+ *	@sg: Scatter-gather table.
+ *	@n_elem: Number of elements in s/g table.
+ *
+ *	Initialize the data-related elements of queued_cmd @qc
+ *	to point to a scatter-gather table @sg, containing @n_elem
+ *	elements.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ */
+void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
+		 unsigned int n_elem)
+{
+	qc->sg = sg;
+	qc->n_elem = n_elem;
+	qc->cursg = qc->sg;
+}
+
+#ifdef CONFIG_HAS_DMA
+
+/**
+ *	ata_sg_clean - Unmap DMA memory associated with command
+ *	@qc: Command containing DMA memory to be released
+ *
+ *	Unmap all mapped DMA memory associated with this command.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ */
+static void ata_sg_clean(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	struct scatterlist *sg = qc->sg;
+	int dir = qc->dma_dir;
+
+	WARN_ON_ONCE(sg == NULL);
+
+	if (qc->n_elem)
+		dma_unmap_sg(ap->dev, sg, qc->orig_n_elem, dir);
+
+	qc->flags &= ~ATA_QCFLAG_DMAMAP;
+	qc->sg = NULL;
+}
+
+/**
+ *	ata_sg_setup - DMA-map the scatter-gather table associated with a command.
+ *	@qc: Command with scatter-gather table to be mapped.
+ *
+ *	DMA-map the scatter-gather table associated with queued_cmd @qc.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ *
+ *	RETURNS:
+ *	Zero on success, negative on error.
+ *
+ */
+static int ata_sg_setup(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	unsigned int n_elem;
+
+	n_elem = dma_map_sg(ap->dev, qc->sg, qc->n_elem, qc->dma_dir);
+	if (n_elem < 1)
+		return -1;
+
+	qc->orig_n_elem = qc->n_elem;
+	qc->n_elem = n_elem;
+	qc->flags |= ATA_QCFLAG_DMAMAP;
+
+	return 0;
+}
+
+#else /* !CONFIG_HAS_DMA */
+
+static inline void ata_sg_clean(struct ata_queued_cmd *qc) {}
+static inline int ata_sg_setup(struct ata_queued_cmd *qc) { return -1; }
+
+#endif /* !CONFIG_HAS_DMA */
+
+/**
+ *	swap_buf_le16 - swap halves of 16-bit words in place
+ *	@buf:  Buffer to swap
+ *	@buf_words:  Number of 16-bit words in buffer.
+ *
+ *	Swap halves of 16-bit words if needed to convert from
+ *	little-endian byte order to native cpu byte order, or
+ *	vice-versa.
+ *
+ *	LOCKING:
+ *	Inherited from caller.
+ */
+void swap_buf_le16(u16 *buf, unsigned int buf_words)
+{
+#ifdef __BIG_ENDIAN
+	unsigned int i;
+
+	for (i = 0; i < buf_words; i++)
+		buf[i] = le16_to_cpu(buf[i]);
+#endif /* __BIG_ENDIAN */
+}
+
+/**
+ *	ata_qc_free - free unused ata_queued_cmd
+ *	@qc: Command to complete
+ *
+ *	Designed to free unused ata_queued_cmd object
+ *	in case something prevents using it.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ */
+void ata_qc_free(struct ata_queued_cmd *qc)
+{
+	qc->flags = 0;
+	if (ata_tag_valid(qc->tag))
+		qc->tag = ATA_TAG_POISON;
+}
+
+void __ata_qc_complete(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap;
+	struct ata_link *link;
+
+	if (WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE)))
+		return;
+
+	ap = qc->ap;
+	link = qc->dev->link;
+
+	if (likely(qc->flags & ATA_QCFLAG_DMAMAP))
+		ata_sg_clean(qc);
+
+	/* command should be marked inactive atomically with qc completion */
+	if (ata_is_ncq(qc->tf.protocol)) {
+		link->sactive &= ~(1 << qc->hw_tag);
+		if (!link->sactive)
+			ap->nr_active_links--;
+	} else {
+		link->active_tag = ATA_TAG_POISON;
+		ap->nr_active_links--;
+	}
+
+	/* clear exclusive status */
+	if (unlikely(qc->flags & ATA_QCFLAG_CLEAR_EXCL &&
+		     ap->excl_link == link))
+		ap->excl_link = NULL;
+
+	/*
+	 * Mark qc as inactive to prevent the port interrupt handler from
+	 * completing the command twice later, before the error handler is
+	 * called.
+	 */
+	qc->flags &= ~ATA_QCFLAG_ACTIVE;
+	ap->qc_active &= ~(1ULL << qc->tag);
+
+	/* call completion callback */
+	qc->complete_fn(qc);
+}
+
+static void fill_result_tf(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+
+	/*
+	 * rtf may already be filled (e.g. for successful NCQ commands).
+	 * If that is the case, we have nothing to do.
+	 */
+	if (qc->flags & ATA_QCFLAG_RTF_FILLED)
+		return;
+
+	qc->result_tf.flags = qc->tf.flags;
+	ap->ops->qc_fill_rtf(qc);
+	qc->flags |= ATA_QCFLAG_RTF_FILLED;
+}
+
+static void ata_verify_xfer(struct ata_queued_cmd *qc)
+{
+	struct ata_device *dev = qc->dev;
+
+	if (!ata_is_data(qc->tf.protocol))
+		return;
+
+	if ((dev->mwdma_mask || dev->udma_mask) && ata_is_pio(qc->tf.protocol))
+		return;
+
+	dev->flags &= ~ATA_DFLAG_DUBIOUS_XFER;
+}
+
+/**
+ *	ata_qc_complete - Complete an active ATA command
+ *	@qc: Command to complete
+ *
+ *	Indicate to the mid and upper layers that an ATA command has
+ *	completed, with either an ok or not-ok status.
+ *
+ *	Refrain from calling this function multiple times when
+ *	successfully completing multiple NCQ commands.
+ *	ata_qc_complete_multiple() should be used instead, which will
+ *	properly update IRQ expect state.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ */
+void ata_qc_complete(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	struct ata_device *dev = qc->dev;
+	struct ata_eh_info *ehi = &dev->link->eh_info;
+
+	/* Trigger the LED (if available) */
+	ledtrig_disk_activity(!!(qc->tf.flags & ATA_TFLAG_WRITE));
+
+	/*
+	 * In order to synchronize EH with the regular execution path, a qc that
+	 * is owned by EH is marked with ATA_QCFLAG_EH.
+	 *
+	 * The normal execution path is responsible for not accessing a qc owned
+	 * by EH.  libata core enforces the rule by returning NULL from
+	 * ata_qc_from_tag() for qcs owned by EH.
+	 */
+	if (unlikely(qc->err_mask))
+		qc->flags |= ATA_QCFLAG_EH;
+
+	/*
+	 * Finish internal commands without any further processing and always
+	 * with the result TF filled.
+	 */
+	if (unlikely(ata_tag_internal(qc->tag))) {
+		fill_result_tf(qc);
+		trace_ata_qc_complete_internal(qc);
+		__ata_qc_complete(qc);
+		return;
+	}
+
+	/* Non-internal qc has failed.  Fill the result TF and summon EH. */
+	if (unlikely(qc->flags & ATA_QCFLAG_EH)) {
+		fill_result_tf(qc);
+		trace_ata_qc_complete_failed(qc);
+		ata_qc_schedule_eh(qc);
+		return;
+	}
+
+	WARN_ON_ONCE(ata_port_is_frozen(ap));
+
+	/* read result TF if requested */
+	if (qc->flags & ATA_QCFLAG_RESULT_TF)
+		fill_result_tf(qc);
+
+	trace_ata_qc_complete_done(qc);
+
+	/*
+	 * For CDL commands that completed without an error, check if we have
+	 * sense data (ATA_SENSE is set). If we do, then the command may have
+	 * been aborted by the device due to a limit timeout using the policy
+	 * 0xD. For these commands, invoke EH to get the command sense data.
+	 */
+	if (qc->flags & ATA_QCFLAG_HAS_CDL &&
+	    qc->result_tf.status & ATA_SENSE) {
+		/*
+		 * Tell SCSI EH to not overwrite scmd->result even if this
+		 * command is finished with result SAM_STAT_GOOD.
+		 */
+		qc->scsicmd->flags |= SCMD_FORCE_EH_SUCCESS;
+		qc->flags |= ATA_QCFLAG_EH_SUCCESS_CMD;
+		ehi->dev_action[dev->devno] |= ATA_EH_GET_SUCCESS_SENSE;
+
+		/*
+		 * set pending so that ata_qc_schedule_eh() does not trigger
+		 * fast drain, and freeze the port.
+		 */
+		ap->pflags |= ATA_PFLAG_EH_PENDING;
+		ata_qc_schedule_eh(qc);
+		return;
+	}
+
+	/* Some commands need post-processing after successful completion. */
+	switch (qc->tf.command) {
+	case ATA_CMD_SET_FEATURES:
+		if (qc->tf.feature != SETFEATURES_WC_ON &&
+		    qc->tf.feature != SETFEATURES_WC_OFF &&
+		    qc->tf.feature != SETFEATURES_RA_ON &&
+		    qc->tf.feature != SETFEATURES_RA_OFF)
+			break;
+		fallthrough;
+	case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */
+	case ATA_CMD_SET_MULTI: /* multi_count changed */
+		/* revalidate device */
+		ehi->dev_action[dev->devno] |= ATA_EH_REVALIDATE;
+		ata_port_schedule_eh(ap);
+		break;
+
+	case ATA_CMD_SLEEP:
+		dev->flags |= ATA_DFLAG_SLEEPING;
+		break;
+	}
+
+	if (unlikely(dev->flags & ATA_DFLAG_DUBIOUS_XFER))
+		ata_verify_xfer(qc);
+
+	__ata_qc_complete(qc);
+}
+EXPORT_SYMBOL_GPL(ata_qc_complete);
+
+/**
+ *	ata_qc_get_active - get bitmask of active qcs
+ *	@ap: port in question
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ *
+ *	RETURNS:
+ *	Bitmask of active qcs
+ */
+u64 ata_qc_get_active(struct ata_port *ap)
+{
+	u64 qc_active = ap->qc_active;
+
+	/* ATA_TAG_INTERNAL is sent to hw as tag 0 */
+	if (qc_active & (1ULL << ATA_TAG_INTERNAL)) {
+		qc_active |= (1 << 0);
+		qc_active &= ~(1ULL << ATA_TAG_INTERNAL);
+	}
+
+	return qc_active;
+}
+EXPORT_SYMBOL_GPL(ata_qc_get_active);
+
+/**
+ *	ata_qc_issue - issue taskfile to device
+ *	@qc: command to issue to device
+ *
+ *	Prepare an ATA command to submission to device.
+ *	This includes mapping the data into a DMA-able
+ *	area, filling in the S/G table, and finally
+ *	writing the taskfile to hardware, starting the command.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ */
+void ata_qc_issue(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	struct ata_link *link = qc->dev->link;
+	u8 prot = qc->tf.protocol;
+
+	/* Make sure only one non-NCQ command is outstanding. */
+	WARN_ON_ONCE(ata_tag_valid(link->active_tag));
+
+	if (ata_is_ncq(prot)) {
+		WARN_ON_ONCE(link->sactive & (1 << qc->hw_tag));
+
+		if (!link->sactive)
+			ap->nr_active_links++;
+		link->sactive |= 1 << qc->hw_tag;
+	} else {
+		WARN_ON_ONCE(link->sactive);
+
+		ap->nr_active_links++;
+		link->active_tag = qc->tag;
+	}
+
+	qc->flags |= ATA_QCFLAG_ACTIVE;
+	ap->qc_active |= 1ULL << qc->tag;
+
+	/*
+	 * We guarantee to LLDs that they will have at least one
+	 * non-zero sg if the command is a data command.
+	 */
+	if (ata_is_data(prot) && (!qc->sg || !qc->n_elem || !qc->nbytes))
+		goto sys_err;
+
+	if (ata_is_dma(prot) || (ata_is_pio(prot) &&
+				 (ap->flags & ATA_FLAG_PIO_DMA)))
+		if (ata_sg_setup(qc))
+			goto sys_err;
+
+	/* if device is sleeping, schedule reset and abort the link */
+	if (unlikely(qc->dev->flags & ATA_DFLAG_SLEEPING)) {
+		link->eh_info.action |= ATA_EH_RESET;
+		ata_ehi_push_desc(&link->eh_info, "waking up from sleep");
+		ata_link_abort(link);
+		return;
+	}
+
+	if (ap->ops->qc_prep) {
+		trace_ata_qc_prep(qc);
+		qc->err_mask |= ap->ops->qc_prep(qc);
+		if (unlikely(qc->err_mask))
+			goto err;
+	}
+
+	trace_ata_qc_issue(qc);
+	qc->err_mask |= ap->ops->qc_issue(qc);
+	if (unlikely(qc->err_mask))
+		goto err;
+	return;
+
+sys_err:
+	qc->err_mask |= AC_ERR_SYSTEM;
+err:
+	ata_qc_complete(qc);
+}
+
+/**
+ *	ata_phys_link_online - test whether the given link is online
+ *	@link: ATA link to test
+ *
+ *	Test whether @link is online.  Note that this function returns
+ *	0 if online status of @link cannot be obtained, so
+ *	ata_link_online(link) != !ata_link_offline(link).
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	True if the port online status is available and online.
+ */
+bool ata_phys_link_online(struct ata_link *link)
+{
+	u32 sstatus;
+
+	if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 &&
+	    ata_sstatus_online(sstatus))
+		return true;
+	return false;
+}
+
+/**
+ *	ata_phys_link_offline - test whether the given link is offline
+ *	@link: ATA link to test
+ *
+ *	Test whether @link is offline.  Note that this function
+ *	returns 0 if offline status of @link cannot be obtained, so
+ *	ata_link_online(link) != !ata_link_offline(link).
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	True if the port offline status is available and offline.
+ */
+bool ata_phys_link_offline(struct ata_link *link)
+{
+	u32 sstatus;
+
+	if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 &&
+	    !ata_sstatus_online(sstatus))
+		return true;
+	return false;
+}
+
+/**
+ *	ata_link_online - test whether the given link is online
+ *	@link: ATA link to test
+ *
+ *	Test whether @link is online.  This is identical to
+ *	ata_phys_link_online() when there's no slave link.  When
+ *	there's a slave link, this function should only be called on
+ *	the master link and will return true if any of M/S links is
+ *	online.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	True if the port online status is available and online.
+ */
+bool ata_link_online(struct ata_link *link)
+{
+	struct ata_link *slave = link->ap->slave_link;
+
+	WARN_ON(link == slave);	/* shouldn't be called on slave link */
+
+	return ata_phys_link_online(link) ||
+		(slave && ata_phys_link_online(slave));
+}
+EXPORT_SYMBOL_GPL(ata_link_online);
+
+/**
+ *	ata_link_offline - test whether the given link is offline
+ *	@link: ATA link to test
+ *
+ *	Test whether @link is offline.  This is identical to
+ *	ata_phys_link_offline() when there's no slave link.  When
+ *	there's a slave link, this function should only be called on
+ *	the master link and will return true if both M/S links are
+ *	offline.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	True if the port offline status is available and offline.
+ */
+bool ata_link_offline(struct ata_link *link)
+{
+	struct ata_link *slave = link->ap->slave_link;
+
+	WARN_ON(link == slave);	/* shouldn't be called on slave link */
+
+	return ata_phys_link_offline(link) &&
+		(!slave || ata_phys_link_offline(slave));
+}
+EXPORT_SYMBOL_GPL(ata_link_offline);
+
+#ifdef CONFIG_PM
+static void ata_port_request_pm(struct ata_port *ap, pm_message_t mesg,
+				unsigned int action, unsigned int ehi_flags,
+				bool async)
+{
+	struct ata_link *link;
+	unsigned long flags;
+
+	spin_lock_irqsave(ap->lock, flags);
+
+	/*
+	 * A previous PM operation might still be in progress. Wait for
+	 * ATA_PFLAG_PM_PENDING to clear.
+	 */
+	if (ap->pflags & ATA_PFLAG_PM_PENDING) {
+		spin_unlock_irqrestore(ap->lock, flags);
+		ata_port_wait_eh(ap);
+		spin_lock_irqsave(ap->lock, flags);
+	}
+
+	/* Request PM operation to EH */
+	ap->pm_mesg = mesg;
+	ap->pflags |= ATA_PFLAG_PM_PENDING;
+	ata_for_each_link(link, ap, HOST_FIRST) {
+		link->eh_info.action |= action;
+		link->eh_info.flags |= ehi_flags;
+	}
+
+	ata_port_schedule_eh(ap);
+
+	spin_unlock_irqrestore(ap->lock, flags);
+
+	if (!async)
+		ata_port_wait_eh(ap);
+}
+
+static void ata_port_suspend(struct ata_port *ap, pm_message_t mesg,
+			     bool async)
+{
+	/*
+	 * We are about to suspend the port, so we do not care about
+	 * scsi_rescan_device() calls scheduled by previous resume operations.
+	 * The next resume will schedule the rescan again. So cancel any rescan
+	 * that is not done yet.
+	 */
+	cancel_delayed_work_sync(&ap->scsi_rescan_task);
+
+	/*
+	 * On some hardware, device fails to respond after spun down for
+	 * suspend. As the device will not be used until being resumed, we
+	 * do not need to touch the device. Ask EH to skip the usual stuff
+	 * and proceed directly to suspend.
+	 *
+	 * http://thread.gmane.org/gmane.linux.ide/46764
+	 */
+	ata_port_request_pm(ap, mesg, 0,
+			    ATA_EHI_QUIET | ATA_EHI_NO_AUTOPSY |
+			    ATA_EHI_NO_RECOVERY,
+			    async);
+}
+
+static int ata_port_pm_suspend(struct device *dev)
+{
+	struct ata_port *ap = to_ata_port(dev);
+
+	if (pm_runtime_suspended(dev))
+		return 0;
+
+	ata_port_suspend(ap, PMSG_SUSPEND, false);
+	return 0;
+}
+
+static int ata_port_pm_freeze(struct device *dev)
+{
+	struct ata_port *ap = to_ata_port(dev);
+
+	if (pm_runtime_suspended(dev))
+		return 0;
+
+	ata_port_suspend(ap, PMSG_FREEZE, false);
+	return 0;
+}
+
+static int ata_port_pm_poweroff(struct device *dev)
+{
+	if (!pm_runtime_suspended(dev))
+		ata_port_suspend(to_ata_port(dev), PMSG_HIBERNATE, false);
+	return 0;
+}
+
+static void ata_port_resume(struct ata_port *ap, pm_message_t mesg,
+			    bool async)
+{
+	ata_port_request_pm(ap, mesg, ATA_EH_RESET,
+			    ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
+			    async);
+}
+
+static int ata_port_pm_resume(struct device *dev)
+{
+	if (!pm_runtime_suspended(dev))
+		ata_port_resume(to_ata_port(dev), PMSG_RESUME, true);
+	return 0;
+}
+
+/*
+ * For ODDs, the upper layer will poll for media change every few seconds,
+ * which will make it enter and leave suspend state every few seconds. And
+ * as each suspend will cause a hard/soft reset, the gain of runtime suspend
+ * is very little and the ODD may malfunction after constantly being reset.
+ * So the idle callback here will not proceed to suspend if a non-ZPODD capable
+ * ODD is attached to the port.
+ */
+static int ata_port_runtime_idle(struct device *dev)
+{
+	struct ata_port *ap = to_ata_port(dev);
+	struct ata_link *link;
+	struct ata_device *adev;
+
+	ata_for_each_link(link, ap, HOST_FIRST) {
+		ata_for_each_dev(adev, link, ENABLED)
+			if (adev->class == ATA_DEV_ATAPI &&
+			    !zpodd_dev_enabled(adev))
+				return -EBUSY;
+	}
+
+	return 0;
+}
+
+static int ata_port_runtime_suspend(struct device *dev)
+{
+	ata_port_suspend(to_ata_port(dev), PMSG_AUTO_SUSPEND, false);
+	return 0;
+}
+
+static int ata_port_runtime_resume(struct device *dev)
+{
+	ata_port_resume(to_ata_port(dev), PMSG_AUTO_RESUME, false);
+	return 0;
+}
+
+static const struct dev_pm_ops ata_port_pm_ops = {
+	.suspend = ata_port_pm_suspend,
+	.resume = ata_port_pm_resume,
+	.freeze = ata_port_pm_freeze,
+	.thaw = ata_port_pm_resume,
+	.poweroff = ata_port_pm_poweroff,
+	.restore = ata_port_pm_resume,
+
+	.runtime_suspend = ata_port_runtime_suspend,
+	.runtime_resume = ata_port_runtime_resume,
+	.runtime_idle = ata_port_runtime_idle,
+};
+
+/* sas ports don't participate in pm runtime management of ata_ports,
+ * and need to resume ata devices at the domain level, not the per-port
+ * level. sas suspend/resume is async to allow parallel port recovery
+ * since sas has multiple ata_port instances per Scsi_Host.
+ */
+void ata_sas_port_suspend(struct ata_port *ap)
+{
+	ata_port_suspend(ap, PMSG_SUSPEND, true);
+}
+EXPORT_SYMBOL_GPL(ata_sas_port_suspend);
+
+void ata_sas_port_resume(struct ata_port *ap)
+{
+	ata_port_resume(ap, PMSG_RESUME, true);
+}
+EXPORT_SYMBOL_GPL(ata_sas_port_resume);
+
+/**
+ *	ata_host_suspend - suspend host
+ *	@host: host to suspend
+ *	@mesg: PM message
+ *
+ *	Suspend @host.  Actual operation is performed by port suspend.
+ */
+void ata_host_suspend(struct ata_host *host, pm_message_t mesg)
+{
+	host->dev->power.power_state = mesg;
+}
+EXPORT_SYMBOL_GPL(ata_host_suspend);
+
+/**
+ *	ata_host_resume - resume host
+ *	@host: host to resume
+ *
+ *	Resume @host.  Actual operation is performed by port resume.
+ */
+void ata_host_resume(struct ata_host *host)
+{
+	host->dev->power.power_state = PMSG_ON;
+}
+EXPORT_SYMBOL_GPL(ata_host_resume);
+#endif
+
+const struct device_type ata_port_type = {
+	.name = ATA_PORT_TYPE_NAME,
+#ifdef CONFIG_PM
+	.pm = &ata_port_pm_ops,
+#endif
+};
+
+/**
+ *	ata_dev_init - Initialize an ata_device structure
+ *	@dev: Device structure to initialize
+ *
+ *	Initialize @dev in preparation for probing.
+ *
+ *	LOCKING:
+ *	Inherited from caller.
+ */
+void ata_dev_init(struct ata_device *dev)
+{
+	struct ata_link *link = ata_dev_phys_link(dev);
+	struct ata_port *ap = link->ap;
+	unsigned long flags;
+
+	/* SATA spd limit is bound to the attached device, reset together */
+	link->sata_spd_limit = link->hw_sata_spd_limit;
+	link->sata_spd = 0;
+
+	/* High bits of dev->flags are used to record warm plug
+	 * requests which occur asynchronously.  Synchronize using
+	 * host lock.
+	 */
+	spin_lock_irqsave(ap->lock, flags);
+	dev->flags &= ~ATA_DFLAG_INIT_MASK;
+	dev->quirks = 0;
+	spin_unlock_irqrestore(ap->lock, flags);
+
+	memset((void *)dev + ATA_DEVICE_CLEAR_BEGIN, 0,
+	       ATA_DEVICE_CLEAR_END - ATA_DEVICE_CLEAR_BEGIN);
+	dev->pio_mask = UINT_MAX;
+	dev->mwdma_mask = UINT_MAX;
+	dev->udma_mask = UINT_MAX;
+}
+
+/**
+ *	ata_link_init - Initialize an ata_link structure
+ *	@ap: ATA port link is attached to
+ *	@link: Link structure to initialize
+ *	@pmp: Port multiplier port number
+ *
+ *	Initialize @link.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ */
+void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp)
+{
+	int i;
+
+	/* clear everything except for devices */
+	memset((void *)link + ATA_LINK_CLEAR_BEGIN, 0,
+	       ATA_LINK_CLEAR_END - ATA_LINK_CLEAR_BEGIN);
+
+	link->ap = ap;
+	link->pmp = pmp;
+	link->active_tag = ATA_TAG_POISON;
+	link->hw_sata_spd_limit = UINT_MAX;
+
+	/* can't use iterator, ap isn't initialized yet */
+	for (i = 0; i < ATA_MAX_DEVICES; i++) {
+		struct ata_device *dev = &link->device[i];
+
+		dev->link = link;
+		dev->devno = dev - link->device;
+#ifdef CONFIG_ATA_ACPI
+		dev->gtf_filter = ata_acpi_gtf_filter;
+#endif
+		ata_dev_init(dev);
+	}
+}
+
+/**
+ *	sata_link_init_spd - Initialize link->sata_spd_limit
+ *	@link: Link to configure sata_spd_limit for
+ *
+ *	Initialize ``link->[hw_]sata_spd_limit`` to the currently
+ *	configured value.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ *
+ *	RETURNS:
+ *	0 on success, -errno on failure.
+ */
+int sata_link_init_spd(struct ata_link *link)
+{
+	u8 spd;
+	int rc;
+
+	rc = sata_scr_read(link, SCR_CONTROL, &link->saved_scontrol);
+	if (rc)
+		return rc;
+
+	spd = (link->saved_scontrol >> 4) & 0xf;
+	if (spd)
+		link->hw_sata_spd_limit &= (1 << spd) - 1;
+
+	ata_force_link_limits(link);
+
+	link->sata_spd_limit = link->hw_sata_spd_limit;
+
+	return 0;
+}
+
+/**
+ *	ata_port_alloc - allocate and initialize basic ATA port resources
+ *	@host: ATA host this allocated port belongs to
+ *
+ *	Allocate and initialize basic ATA port resources.
+ *
+ *	RETURNS:
+ *	Allocate ATA port on success, NULL on failure.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ */
+struct ata_port *ata_port_alloc(struct ata_host *host)
+{
+	struct ata_port *ap;
+	int id;
+
+	ap = kzalloc(sizeof(*ap), GFP_KERNEL);
+	if (!ap)
+		return NULL;
+
+	ap->pflags |= ATA_PFLAG_INITIALIZING | ATA_PFLAG_FROZEN;
+	ap->lock = &host->lock;
+	id = ida_alloc_min(&ata_ida, 1, GFP_KERNEL);
+	if (id < 0) {
+		kfree(ap);
+		return NULL;
+	}
+	ap->print_id = id;
+	ap->host = host;
+	ap->dev = host->dev;
+
+	mutex_init(&ap->scsi_scan_mutex);
+	INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug);
+	INIT_DELAYED_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan);
+	INIT_LIST_HEAD(&ap->eh_done_q);
+	init_waitqueue_head(&ap->eh_wait_q);
+	init_completion(&ap->park_req_pending);
+	timer_setup(&ap->fastdrain_timer, ata_eh_fastdrain_timerfn,
+		    TIMER_DEFERRABLE);
+
+	ap->cbl = ATA_CBL_NONE;
+
+	ata_link_init(ap, &ap->link, 0);
+
+#ifdef ATA_IRQ_TRAP
+	ap->stats.unhandled_irq = 1;
+	ap->stats.idle_irq = 1;
+#endif
+	ata_sff_port_init(ap);
+
+	return ap;
+}
+EXPORT_SYMBOL_GPL(ata_port_alloc);
+
+void ata_port_free(struct ata_port *ap)
+{
+	if (!ap)
+		return;
+
+	kfree(ap->pmp_link);
+	kfree(ap->slave_link);
+	ida_free(&ata_ida, ap->print_id);
+	kfree(ap);
+}
+EXPORT_SYMBOL_GPL(ata_port_free);
+
+static void ata_devres_release(struct device *gendev, void *res)
+{
+	struct ata_host *host = dev_get_drvdata(gendev);
+	int i;
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+
+		if (!ap)
+			continue;
+
+		if (ap->scsi_host)
+			scsi_host_put(ap->scsi_host);
+
+	}
+
+	dev_set_drvdata(gendev, NULL);
+	ata_host_put(host);
+}
+
+static void ata_host_release(struct kref *kref)
+{
+	struct ata_host *host = container_of(kref, struct ata_host, kref);
+	int i;
+
+	for (i = 0; i < host->n_ports; i++) {
+		ata_port_free(host->ports[i]);
+		host->ports[i] = NULL;
+	}
+	kfree(host);
+}
+
+void ata_host_get(struct ata_host *host)
+{
+	kref_get(&host->kref);
+}
+
+void ata_host_put(struct ata_host *host)
+{
+	kref_put(&host->kref, ata_host_release);
+}
+EXPORT_SYMBOL_GPL(ata_host_put);
+
+/**
+ *	ata_host_alloc - allocate and init basic ATA host resources
+ *	@dev: generic device this host is associated with
+ *	@n_ports: the number of ATA ports associated with this host
+ *
+ *	Allocate and initialize basic ATA host resources.  LLD calls
+ *	this function to allocate a host, initializes it fully and
+ *	attaches it using ata_host_register().
+ *
+ *	RETURNS:
+ *	Allocate ATA host on success, NULL on failure.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ */
+struct ata_host *ata_host_alloc(struct device *dev, int n_ports)
+{
+	struct ata_host *host;
+	size_t sz;
+	int i;
+	void *dr;
+
+	/* alloc a container for our list of ATA ports (buses) */
+	sz = sizeof(struct ata_host) + n_ports * sizeof(void *);
+	host = kzalloc(sz, GFP_KERNEL);
+	if (!host)
+		return NULL;
+
+	if (!devres_open_group(dev, NULL, GFP_KERNEL)) {
+		kfree(host);
+		return NULL;
+	}
+
+	dr = devres_alloc(ata_devres_release, 0, GFP_KERNEL);
+	if (!dr) {
+		kfree(host);
+		goto err_out;
+	}
+
+	devres_add(dev, dr);
+	dev_set_drvdata(dev, host);
+
+	spin_lock_init(&host->lock);
+	mutex_init(&host->eh_mutex);
+	host->dev = dev;
+	host->n_ports = n_ports;
+	kref_init(&host->kref);
+
+	/* allocate ports bound to this host */
+	for (i = 0; i < n_ports; i++) {
+		struct ata_port *ap;
+
+		ap = ata_port_alloc(host);
+		if (!ap)
+			goto err_out;
+
+		ap->port_no = i;
+		host->ports[i] = ap;
+	}
+
+	devres_remove_group(dev, NULL);
+	return host;
+
+ err_out:
+	devres_release_group(dev, NULL);
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(ata_host_alloc);
+
+/**
+ *	ata_host_alloc_pinfo - alloc host and init with port_info array
+ *	@dev: generic device this host is associated with
+ *	@ppi: array of ATA port_info to initialize host with
+ *	@n_ports: number of ATA ports attached to this host
+ *
+ *	Allocate ATA host and initialize with info from @ppi.  If NULL
+ *	terminated, @ppi may contain fewer entries than @n_ports.  The
+ *	last entry will be used for the remaining ports.
+ *
+ *	RETURNS:
+ *	Allocate ATA host on success, NULL on failure.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ */
+struct ata_host *ata_host_alloc_pinfo(struct device *dev,
+				      const struct ata_port_info * const * ppi,
+				      int n_ports)
+{
+	const struct ata_port_info *pi = &ata_dummy_port_info;
+	struct ata_host *host;
+	int i, j;
+
+	host = ata_host_alloc(dev, n_ports);
+	if (!host)
+		return NULL;
+
+	for (i = 0, j = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+
+		if (ppi[j])
+			pi = ppi[j++];
+
+		ap->pio_mask = pi->pio_mask;
+		ap->mwdma_mask = pi->mwdma_mask;
+		ap->udma_mask = pi->udma_mask;
+		ap->flags |= pi->flags;
+		ap->link.flags |= pi->link_flags;
+		ap->ops = pi->port_ops;
+
+		if (!host->ops && (pi->port_ops != &ata_dummy_port_ops))
+			host->ops = pi->port_ops;
+	}
+
+	return host;
+}
+EXPORT_SYMBOL_GPL(ata_host_alloc_pinfo);
+
+static void ata_host_stop(struct device *gendev, void *res)
+{
+	struct ata_host *host = dev_get_drvdata(gendev);
+	int i;
+
+	WARN_ON(!(host->flags & ATA_HOST_STARTED));
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+
+		if (ap->ops->port_stop)
+			ap->ops->port_stop(ap);
+	}
+
+	if (host->ops->host_stop)
+		host->ops->host_stop(host);
+}
+
+/**
+ *	ata_finalize_port_ops - finalize ata_port_operations
+ *	@ops: ata_port_operations to finalize
+ *
+ *	An ata_port_operations can inherit from another ops and that
+ *	ops can again inherit from another.  This can go on as many
+ *	times as necessary as long as there is no loop in the
+ *	inheritance chain.
+ *
+ *	Ops tables are finalized when the host is started.  NULL or
+ *	unspecified entries are inherited from the closet ancestor
+ *	which has the method and the entry is populated with it.
+ *	After finalization, the ops table directly points to all the
+ *	methods and ->inherits is no longer necessary and cleared.
+ *
+ *	Using ATA_OP_NULL, inheriting ops can force a method to NULL.
+ *
+ *	LOCKING:
+ *	None.
+ */
+static void ata_finalize_port_ops(struct ata_port_operations *ops)
+{
+	static DEFINE_SPINLOCK(lock);
+	const struct ata_port_operations *cur;
+	void **begin = (void **)ops;
+	void **end = (void **)&ops->inherits;
+	void **pp;
+
+	if (!ops || !ops->inherits)
+		return;
+
+	spin_lock(&lock);
+
+	for (cur = ops->inherits; cur; cur = cur->inherits) {
+		void **inherit = (void **)cur;
+
+		for (pp = begin; pp < end; pp++, inherit++)
+			if (!*pp)
+				*pp = *inherit;
+	}
+
+	for (pp = begin; pp < end; pp++)
+		if (IS_ERR(*pp))
+			*pp = NULL;
+
+	ops->inherits = NULL;
+
+	spin_unlock(&lock);
+}
+
+/**
+ *	ata_host_start - start and freeze ports of an ATA host
+ *	@host: ATA host to start ports for
+ *
+ *	Start and then freeze ports of @host.  Started status is
+ *	recorded in host->flags, so this function can be called
+ *	multiple times.  Ports are guaranteed to get started only
+ *	once.  If host->ops is not initialized yet, it is set to the
+ *	first non-dummy port ops.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ *
+ *	RETURNS:
+ *	0 if all ports are started successfully, -errno otherwise.
+ */
+int ata_host_start(struct ata_host *host)
+{
+	int have_stop = 0;
+	void *start_dr = NULL;
+	int i, rc;
+
+	if (host->flags & ATA_HOST_STARTED)
+		return 0;
+
+	ata_finalize_port_ops(host->ops);
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+
+		ata_finalize_port_ops(ap->ops);
+
+		if (!host->ops && !ata_port_is_dummy(ap))
+			host->ops = ap->ops;
+
+		if (ap->ops->port_stop)
+			have_stop = 1;
+	}
+
+	if (host->ops && host->ops->host_stop)
+		have_stop = 1;
+
+	if (have_stop) {
+		start_dr = devres_alloc(ata_host_stop, 0, GFP_KERNEL);
+		if (!start_dr)
+			return -ENOMEM;
+	}
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+
+		if (ap->ops->port_start) {
+			rc = ap->ops->port_start(ap);
+			if (rc) {
+				if (rc != -ENODEV)
+					dev_err(host->dev,
+						"failed to start port %d (errno=%d)\n",
+						i, rc);
+				goto err_out;
+			}
+		}
+		ata_eh_freeze_port(ap);
+	}
+
+	if (start_dr)
+		devres_add(host->dev, start_dr);
+	host->flags |= ATA_HOST_STARTED;
+	return 0;
+
+ err_out:
+	while (--i >= 0) {
+		struct ata_port *ap = host->ports[i];
+
+		if (ap->ops->port_stop)
+			ap->ops->port_stop(ap);
+	}
+	devres_free(start_dr);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(ata_host_start);
+
+/**
+ *	ata_host_init - Initialize a host struct for sas (ipr, libsas)
+ *	@host:	host to initialize
+ *	@dev:	device host is attached to
+ *	@ops:	port_ops
+ *
+ */
+void ata_host_init(struct ata_host *host, struct device *dev,
+		   struct ata_port_operations *ops)
+{
+	spin_lock_init(&host->lock);
+	mutex_init(&host->eh_mutex);
+	host->n_tags = ATA_MAX_QUEUE;
+	host->dev = dev;
+	host->ops = ops;
+	kref_init(&host->kref);
+}
+EXPORT_SYMBOL_GPL(ata_host_init);
+
+void ata_port_probe(struct ata_port *ap)
+{
+	struct ata_eh_info *ehi = &ap->link.eh_info;
+	unsigned long flags;
+
+	/* kick EH for boot probing */
+	spin_lock_irqsave(ap->lock, flags);
+
+	ehi->probe_mask |= ATA_ALL_DEVICES;
+	ehi->action |= ATA_EH_RESET;
+	ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;
+
+	ap->pflags &= ~ATA_PFLAG_INITIALIZING;
+	ap->pflags |= ATA_PFLAG_LOADING;
+	ata_port_schedule_eh(ap);
+
+	spin_unlock_irqrestore(ap->lock, flags);
+}
+EXPORT_SYMBOL_GPL(ata_port_probe);
+
+static void async_port_probe(void *data, async_cookie_t cookie)
+{
+	struct ata_port *ap = data;
+
+	/*
+	 * If we're not allowed to scan this host in parallel,
+	 * we need to wait until all previous scans have completed
+	 * before going further.
+	 * Jeff Garzik says this is only within a controller, so we
+	 * don't need to wait for port 0, only for later ports.
+	 */
+	if (!(ap->host->flags & ATA_HOST_PARALLEL_SCAN) && ap->port_no != 0)
+		async_synchronize_cookie(cookie);
+
+	ata_port_probe(ap);
+	ata_port_wait_eh(ap);
+
+	/* in order to keep device order, we need to synchronize at this point */
+	async_synchronize_cookie(cookie);
+
+	ata_scsi_scan_host(ap, 1);
+}
+
+/**
+ *	ata_host_register - register initialized ATA host
+ *	@host: ATA host to register
+ *	@sht: template for SCSI host
+ *
+ *	Register initialized ATA host.  @host is allocated using
+ *	ata_host_alloc() and fully initialized by LLD.  This function
+ *	starts ports, registers @host with ATA and SCSI layers and
+ *	probe registered devices.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ *
+ *	RETURNS:
+ *	0 on success, -errno otherwise.
+ */
+int ata_host_register(struct ata_host *host, const struct scsi_host_template *sht)
+{
+	int i, rc;
+
+	host->n_tags = clamp(sht->can_queue, 1, ATA_MAX_QUEUE);
+
+	/* host must have been started */
+	if (!(host->flags & ATA_HOST_STARTED)) {
+		dev_err(host->dev, "BUG: trying to register unstarted host\n");
+		WARN_ON(1);
+		return -EINVAL;
+	}
+
+	/* Create associated sysfs transport objects  */
+	for (i = 0; i < host->n_ports; i++) {
+		rc = ata_tport_add(host->dev,host->ports[i]);
+		if (rc) {
+			goto err_tadd;
+		}
+	}
+
+	rc = ata_scsi_add_hosts(host, sht);
+	if (rc)
+		goto err_tadd;
+
+	/* set cable, sata_spd_limit and report */
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+		unsigned int xfer_mask;
+
+		/* set SATA cable type if still unset */
+		if (ap->cbl == ATA_CBL_NONE && (ap->flags & ATA_FLAG_SATA))
+			ap->cbl = ATA_CBL_SATA;
+
+		/* init sata_spd_limit to the current value */
+		sata_link_init_spd(&ap->link);
+		if (ap->slave_link)
+			sata_link_init_spd(ap->slave_link);
+
+		/* print per-port info to dmesg */
+		xfer_mask = ata_pack_xfermask(ap->pio_mask, ap->mwdma_mask,
+					      ap->udma_mask);
+
+		if (!ata_port_is_dummy(ap)) {
+			ata_port_info(ap, "%cATA max %s %s\n",
+				      (ap->flags & ATA_FLAG_SATA) ? 'S' : 'P',
+				      ata_mode_string(xfer_mask),
+				      ap->link.eh_info.desc);
+			ata_ehi_clear_desc(&ap->link.eh_info);
+		} else
+			ata_port_info(ap, "DUMMY\n");
+	}
+
+	/* perform each probe asynchronously */
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+		ap->cookie = async_schedule(async_port_probe, ap);
+	}
+
+	return 0;
+
+ err_tadd:
+	while (--i >= 0) {
+		ata_tport_delete(host->ports[i]);
+	}
+	return rc;
+
+}
+EXPORT_SYMBOL_GPL(ata_host_register);
+
+/**
+ *	ata_host_activate - start host, request IRQ and register it
+ *	@host: target ATA host
+ *	@irq: IRQ to request
+ *	@irq_handler: irq_handler used when requesting IRQ
+ *	@irq_flags: irq_flags used when requesting IRQ
+ *	@sht: scsi_host_template to use when registering the host
+ *
+ *	After allocating an ATA host and initializing it, most libata
+ *	LLDs perform three steps to activate the host - start host,
+ *	request IRQ and register it.  This helper takes necessary
+ *	arguments and performs the three steps in one go.
+ *
+ *	An invalid IRQ skips the IRQ registration and expects the host to
+ *	have set polling mode on the port. In this case, @irq_handler
+ *	should be NULL.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ *
+ *	RETURNS:
+ *	0 on success, -errno otherwise.
+ */
+int ata_host_activate(struct ata_host *host, int irq,
+		      irq_handler_t irq_handler, unsigned long irq_flags,
+		      const struct scsi_host_template *sht)
+{
+	int i, rc;
+	char *irq_desc;
+
+	rc = ata_host_start(host);
+	if (rc)
+		return rc;
+
+	/* Special case for polling mode */
+	if (!irq) {
+		WARN_ON(irq_handler);
+		return ata_host_register(host, sht);
+	}
+
+	irq_desc = devm_kasprintf(host->dev, GFP_KERNEL, "%s[%s]",
+				  dev_driver_string(host->dev),
+				  dev_name(host->dev));
+	if (!irq_desc)
+		return -ENOMEM;
+
+	rc = devm_request_irq(host->dev, irq, irq_handler, irq_flags,
+			      irq_desc, host);
+	if (rc)
+		return rc;
+
+	for (i = 0; i < host->n_ports; i++)
+		ata_port_desc_misc(host->ports[i], irq);
+
+	rc = ata_host_register(host, sht);
+	/* if failed, just free the IRQ and leave ports alone */
+	if (rc)
+		devm_free_irq(host->dev, irq, host);
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(ata_host_activate);
+
+/**
+ *	ata_dev_free_resources - Free a device resources
+ *	@dev: Target ATA device
+ *
+ *	Free resources allocated to support a device features.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ */
+void ata_dev_free_resources(struct ata_device *dev)
+{
+	if (zpodd_dev_enabled(dev))
+		zpodd_exit(dev);
+
+	ata_dev_cleanup_cdl_resources(dev);
+}
+
+/**
+ *	ata_port_detach - Detach ATA port in preparation of device removal
+ *	@ap: ATA port to be detached
+ *
+ *	Detach all ATA devices and the associated SCSI devices of @ap;
+ *	then, remove the associated SCSI host.  @ap is guaranteed to
+ *	be quiescent on return from this function.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ */
+static void ata_port_detach(struct ata_port *ap)
+{
+	unsigned long flags;
+	struct ata_link *link;
+	struct ata_device *dev;
+
+	/* Ensure ata_port probe has completed */
+	async_synchronize_cookie(ap->cookie + 1);
+
+	/* Wait for any ongoing EH */
+	ata_port_wait_eh(ap);
+
+	mutex_lock(&ap->scsi_scan_mutex);
+	spin_lock_irqsave(ap->lock, flags);
+
+	/* Remove scsi devices */
+	ata_for_each_link(link, ap, HOST_FIRST) {
+		ata_for_each_dev(dev, link, ALL) {
+			if (dev->sdev) {
+				spin_unlock_irqrestore(ap->lock, flags);
+				scsi_remove_device(dev->sdev);
+				spin_lock_irqsave(ap->lock, flags);
+				dev->sdev = NULL;
+			}
+		}
+	}
+
+	/* Tell EH to disable all devices */
+	ap->pflags |= ATA_PFLAG_UNLOADING;
+	ata_port_schedule_eh(ap);
+
+	spin_unlock_irqrestore(ap->lock, flags);
+	mutex_unlock(&ap->scsi_scan_mutex);
+
+	/* wait till EH commits suicide */
+	ata_port_wait_eh(ap);
+
+	/* it better be dead now */
+	WARN_ON(!(ap->pflags & ATA_PFLAG_UNLOADED));
+
+	cancel_delayed_work_sync(&ap->hotplug_task);
+	cancel_delayed_work_sync(&ap->scsi_rescan_task);
+
+	/* Delete port multiplier link transport devices */
+	if (ap->pmp_link) {
+		int i;
+
+		for (i = 0; i < SATA_PMP_MAX_PORTS; i++)
+			ata_tlink_delete(&ap->pmp_link[i]);
+	}
+
+	/* Remove the associated SCSI host */
+	scsi_remove_host(ap->scsi_host);
+	ata_tport_delete(ap);
+}
+
+/**
+ *	ata_host_detach - Detach all ports of an ATA host
+ *	@host: Host to detach
+ *
+ *	Detach all ports of @host.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ */
+void ata_host_detach(struct ata_host *host)
+{
+	int i;
+
+	for (i = 0; i < host->n_ports; i++)
+		ata_port_detach(host->ports[i]);
+
+	/* the host is dead now, dissociate ACPI */
+	ata_acpi_dissociate(host);
+}
+EXPORT_SYMBOL_GPL(ata_host_detach);
+
+#ifdef CONFIG_PCI
+
+/**
+ *	ata_pci_remove_one - PCI layer callback for device removal
+ *	@pdev: PCI device that was removed
+ *
+ *	PCI layer indicates to libata via this hook that hot-unplug or
+ *	module unload event has occurred.  Detach all ports.  Resource
+ *	release is handled via devres.
+ *
+ *	LOCKING:
+ *	Inherited from PCI layer (may sleep).
+ */
+void ata_pci_remove_one(struct pci_dev *pdev)
+{
+	struct ata_host *host = pci_get_drvdata(pdev);
+
+	ata_host_detach(host);
+}
+EXPORT_SYMBOL_GPL(ata_pci_remove_one);
+
+void ata_pci_shutdown_one(struct pci_dev *pdev)
+{
+	struct ata_host *host = pci_get_drvdata(pdev);
+	int i;
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+
+		ap->pflags |= ATA_PFLAG_FROZEN;
+
+		/* Disable port interrupts */
+		if (ap->ops->freeze)
+			ap->ops->freeze(ap);
+
+		/* Stop the port DMA engines */
+		if (ap->ops->port_stop)
+			ap->ops->port_stop(ap);
+	}
+}
+EXPORT_SYMBOL_GPL(ata_pci_shutdown_one);
+
+/* move to PCI subsystem */
+int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits)
+{
+	unsigned long tmp = 0;
+
+	switch (bits->width) {
+	case 1: {
+		u8 tmp8 = 0;
+		pci_read_config_byte(pdev, bits->reg, &tmp8);
+		tmp = tmp8;
+		break;
+	}
+	case 2: {
+		u16 tmp16 = 0;
+		pci_read_config_word(pdev, bits->reg, &tmp16);
+		tmp = tmp16;
+		break;
+	}
+	case 4: {
+		u32 tmp32 = 0;
+		pci_read_config_dword(pdev, bits->reg, &tmp32);
+		tmp = tmp32;
+		break;
+	}
+
+	default:
+		return -EINVAL;
+	}
+
+	tmp &= bits->mask;
+
+	return (tmp == bits->val) ? 1 : 0;
+}
+EXPORT_SYMBOL_GPL(pci_test_config_bits);
+
+#ifdef CONFIG_PM
+void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg)
+{
+	pci_save_state(pdev);
+	pci_disable_device(pdev);
+
+	if (mesg.event & PM_EVENT_SLEEP)
+		pci_set_power_state(pdev, PCI_D3hot);
+}
+EXPORT_SYMBOL_GPL(ata_pci_device_do_suspend);
+
+int ata_pci_device_do_resume(struct pci_dev *pdev)
+{
+	int rc;
+
+	pci_set_power_state(pdev, PCI_D0);
+	pci_restore_state(pdev);
+
+	rc = pcim_enable_device(pdev);
+	if (rc) {
+		dev_err(&pdev->dev,
+			"failed to enable device after resume (%d)\n", rc);
+		return rc;
+	}
+
+	pci_set_master(pdev);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ata_pci_device_do_resume);
+
+int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
+{
+	struct ata_host *host = pci_get_drvdata(pdev);
+
+	ata_host_suspend(host, mesg);
+
+	ata_pci_device_do_suspend(pdev, mesg);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ata_pci_device_suspend);
+
+int ata_pci_device_resume(struct pci_dev *pdev)
+{
+	struct ata_host *host = pci_get_drvdata(pdev);
+	int rc;
+
+	rc = ata_pci_device_do_resume(pdev);
+	if (rc == 0)
+		ata_host_resume(host);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(ata_pci_device_resume);
+#endif /* CONFIG_PM */
+#endif /* CONFIG_PCI */
+
+/**
+ *	ata_platform_remove_one - Platform layer callback for device removal
+ *	@pdev: Platform device that was removed
+ *
+ *	Platform layer indicates to libata via this hook that hot-unplug or
+ *	module unload event has occurred.  Detach all ports.  Resource
+ *	release is handled via devres.
+ *
+ *	LOCKING:
+ *	Inherited from platform layer (may sleep).
+ */
+void ata_platform_remove_one(struct platform_device *pdev)
+{
+	struct ata_host *host = platform_get_drvdata(pdev);
+
+	ata_host_detach(host);
+}
+EXPORT_SYMBOL_GPL(ata_platform_remove_one);
+
+#ifdef CONFIG_ATA_FORCE
+
+#define force_cbl(name, flag)				\
+	{ #name,	.cbl		= (flag) }
+
+#define force_spd_limit(spd, val)			\
+	{ #spd,	.spd_limit		= (val) }
+
+#define force_xfer(mode, shift)				\
+	{ #mode,	.xfer_mask	= (1UL << (shift)) }
+
+#define force_lflag_on(name, flags)			\
+	{ #name,	.lflags_on	= (flags) }
+
+#define force_lflag_onoff(name, flags)			\
+	{ "no" #name,	.lflags_on	= (flags) },	\
+	{ #name,	.lflags_off	= (flags) }
+
+#define force_quirk_on(name, flag)			\
+	{ #name,	.quirk_on	= (flag) }
+
+#define force_quirk_onoff(name, flag)			\
+	{ "no" #name,	.quirk_on	= (flag) },	\
+	{ #name,	.quirk_off	= (flag) }
+
+static const struct ata_force_param force_tbl[] __initconst = {
+	force_cbl(40c,			ATA_CBL_PATA40),
+	force_cbl(80c,			ATA_CBL_PATA80),
+	force_cbl(short40c,		ATA_CBL_PATA40_SHORT),
+	force_cbl(unk,			ATA_CBL_PATA_UNK),
+	force_cbl(ign,			ATA_CBL_PATA_IGN),
+	force_cbl(sata,			ATA_CBL_SATA),
+
+	force_spd_limit(1.5Gbps,	1),
+	force_spd_limit(3.0Gbps,	2),
+
+	force_xfer(pio0,		ATA_SHIFT_PIO + 0),
+	force_xfer(pio1,		ATA_SHIFT_PIO + 1),
+	force_xfer(pio2,		ATA_SHIFT_PIO + 2),
+	force_xfer(pio3,		ATA_SHIFT_PIO + 3),
+	force_xfer(pio4,		ATA_SHIFT_PIO + 4),
+	force_xfer(pio5,		ATA_SHIFT_PIO + 5),
+	force_xfer(pio6,		ATA_SHIFT_PIO + 6),
+	force_xfer(mwdma0,		ATA_SHIFT_MWDMA + 0),
+	force_xfer(mwdma1,		ATA_SHIFT_MWDMA + 1),
+	force_xfer(mwdma2,		ATA_SHIFT_MWDMA + 2),
+	force_xfer(mwdma3,		ATA_SHIFT_MWDMA + 3),
+	force_xfer(mwdma4,		ATA_SHIFT_MWDMA + 4),
+	force_xfer(udma0,		ATA_SHIFT_UDMA + 0),
+	force_xfer(udma16,		ATA_SHIFT_UDMA + 0),
+	force_xfer(udma/16,		ATA_SHIFT_UDMA + 0),
+	force_xfer(udma1,		ATA_SHIFT_UDMA + 1),
+	force_xfer(udma25,		ATA_SHIFT_UDMA + 1),
+	force_xfer(udma/25,		ATA_SHIFT_UDMA + 1),
+	force_xfer(udma2,		ATA_SHIFT_UDMA + 2),
+	force_xfer(udma33,		ATA_SHIFT_UDMA + 2),
+	force_xfer(udma/33,		ATA_SHIFT_UDMA + 2),
+	force_xfer(udma3,		ATA_SHIFT_UDMA + 3),
+	force_xfer(udma44,		ATA_SHIFT_UDMA + 3),
+	force_xfer(udma/44,		ATA_SHIFT_UDMA + 3),
+	force_xfer(udma4,		ATA_SHIFT_UDMA + 4),
+	force_xfer(udma66,		ATA_SHIFT_UDMA + 4),
+	force_xfer(udma/66,		ATA_SHIFT_UDMA + 4),
+	force_xfer(udma5,		ATA_SHIFT_UDMA + 5),
+	force_xfer(udma100,		ATA_SHIFT_UDMA + 5),
+	force_xfer(udma/100,		ATA_SHIFT_UDMA + 5),
+	force_xfer(udma6,		ATA_SHIFT_UDMA + 6),
+	force_xfer(udma133,		ATA_SHIFT_UDMA + 6),
+	force_xfer(udma/133,		ATA_SHIFT_UDMA + 6),
+	force_xfer(udma7,		ATA_SHIFT_UDMA + 7),
+
+	force_lflag_on(nohrst,		ATA_LFLAG_NO_HRST),
+	force_lflag_on(nosrst,		ATA_LFLAG_NO_SRST),
+	force_lflag_on(norst,		ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST),
+	force_lflag_on(rstonce,		ATA_LFLAG_RST_ONCE),
+	force_lflag_onoff(dbdelay,	ATA_LFLAG_NO_DEBOUNCE_DELAY),
+
+	force_quirk_onoff(ncq,		ATA_QUIRK_NONCQ),
+	force_quirk_onoff(ncqtrim,	ATA_QUIRK_NO_NCQ_TRIM),
+	force_quirk_onoff(ncqati,	ATA_QUIRK_NO_NCQ_ON_ATI),
+
+	force_quirk_onoff(trim,		ATA_QUIRK_NOTRIM),
+	force_quirk_on(trim_zero,	ATA_QUIRK_ZERO_AFTER_TRIM),
+	force_quirk_on(max_trim_128m,	ATA_QUIRK_MAX_TRIM_128M),
+
+	force_quirk_onoff(dma,		ATA_QUIRK_NODMA),
+	force_quirk_on(atapi_dmadir,	ATA_QUIRK_ATAPI_DMADIR),
+	force_quirk_on(atapi_mod16_dma,	ATA_QUIRK_ATAPI_MOD16_DMA),
+
+	force_quirk_onoff(dmalog,	ATA_QUIRK_NO_DMA_LOG),
+	force_quirk_onoff(iddevlog,	ATA_QUIRK_NO_ID_DEV_LOG),
+	force_quirk_onoff(logdir,	ATA_QUIRK_NO_LOG_DIR),
+
+	force_quirk_on(max_sec_128,	ATA_QUIRK_MAX_SEC_128),
+	force_quirk_on(max_sec_1024,	ATA_QUIRK_MAX_SEC_1024),
+	force_quirk_on(max_sec_lba48,	ATA_QUIRK_MAX_SEC_LBA48),
+
+	force_quirk_onoff(lpm,		ATA_QUIRK_NOLPM),
+	force_quirk_onoff(setxfer,	ATA_QUIRK_NOSETXFER),
+	force_quirk_on(dump_id,		ATA_QUIRK_DUMP_ID),
+	force_quirk_onoff(fua,		ATA_QUIRK_NO_FUA),
+
+	force_quirk_on(disable,		ATA_QUIRK_DISABLE),
+};
+
+static int __init ata_parse_force_one(char **cur,
+				      struct ata_force_ent *force_ent,
+				      const char **reason)
+{
+	char *start = *cur, *p = *cur;
+	char *id, *val, *endp;
+	const struct ata_force_param *match_fp = NULL;
+	int nr_matches = 0, i;
+
+	/* find where this param ends and update *cur */
+	while (*p != '\0' && *p != ',')
+		p++;
+
+	if (*p == '\0')
+		*cur = p;
+	else
+		*cur = p + 1;
+
+	*p = '\0';
+
+	/* parse */
+	p = strchr(start, ':');
+	if (!p) {
+		val = strstrip(start);
+		goto parse_val;
+	}
+	*p = '\0';
+
+	id = strstrip(start);
+	val = strstrip(p + 1);
+
+	/* parse id */
+	p = strchr(id, '.');
+	if (p) {
+		*p++ = '\0';
+		force_ent->device = simple_strtoul(p, &endp, 10);
+		if (p == endp || *endp != '\0') {
+			*reason = "invalid device";
+			return -EINVAL;
+		}
+	}
+
+	force_ent->port = simple_strtoul(id, &endp, 10);
+	if (id == endp || *endp != '\0') {
+		*reason = "invalid port/link";
+		return -EINVAL;
+	}
+
+ parse_val:
+	/* parse val, allow shortcuts so that both 1.5 and 1.5Gbps work */
+	for (i = 0; i < ARRAY_SIZE(force_tbl); i++) {
+		const struct ata_force_param *fp = &force_tbl[i];
+
+		if (strncasecmp(val, fp->name, strlen(val)))
+			continue;
+
+		nr_matches++;
+		match_fp = fp;
+
+		if (strcasecmp(val, fp->name) == 0) {
+			nr_matches = 1;
+			break;
+		}
+	}
+
+	if (!nr_matches) {
+		*reason = "unknown value";
+		return -EINVAL;
+	}
+	if (nr_matches > 1) {
+		*reason = "ambiguous value";
+		return -EINVAL;
+	}
+
+	force_ent->param = *match_fp;
+
+	return 0;
+}
+
+static void __init ata_parse_force_param(void)
+{
+	int idx = 0, size = 1;
+	int last_port = -1, last_device = -1;
+	char *p, *cur, *next;
+
+	/* Calculate maximum number of params and allocate ata_force_tbl */
+	for (p = ata_force_param_buf; *p; p++)
+		if (*p == ',')
+			size++;
+
+	ata_force_tbl = kcalloc(size, sizeof(ata_force_tbl[0]), GFP_KERNEL);
+	if (!ata_force_tbl) {
+		printk(KERN_WARNING "ata: failed to extend force table, "
+		       "libata.force ignored\n");
+		return;
+	}
+
+	/* parse and populate the table */
+	for (cur = ata_force_param_buf; *cur != '\0'; cur = next) {
+		const char *reason = "";
+		struct ata_force_ent te = { .port = -1, .device = -1 };
+
+		next = cur;
+		if (ata_parse_force_one(&next, &te, &reason)) {
+			printk(KERN_WARNING "ata: failed to parse force "
+			       "parameter \"%s\" (%s)\n",
+			       cur, reason);
+			continue;
+		}
+
+		if (te.port == -1) {
+			te.port = last_port;
+			te.device = last_device;
+		}
+
+		ata_force_tbl[idx++] = te;
+
+		last_port = te.port;
+		last_device = te.device;
+	}
+
+	ata_force_tbl_size = idx;
+}
+
+static void ata_free_force_param(void)
+{
+	kfree(ata_force_tbl);
+}
+#else
+static inline void ata_parse_force_param(void) { }
+static inline void ata_free_force_param(void) { }
+#endif
+
+static int __init ata_init(void)
+{
+	int rc;
+
+	ata_parse_force_param();
+
+	rc = ata_sff_init();
+	if (rc) {
+		ata_free_force_param();
+		return rc;
+	}
+
+	libata_transport_init();
+	ata_scsi_transport_template = ata_attach_transport();
+	if (!ata_scsi_transport_template) {
+		ata_sff_exit();
+		rc = -ENOMEM;
+		goto err_out;
+	}
+
+	printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n");
+	return 0;
+
+err_out:
+	return rc;
+}
+
+static void __exit ata_exit(void)
+{
+	ata_release_transport(ata_scsi_transport_template);
+	libata_transport_exit();
+	ata_sff_exit();
+	ata_free_force_param();
+}
+
+subsys_initcall(ata_init);
+module_exit(ata_exit);
+
+static DEFINE_RATELIMIT_STATE(ratelimit, HZ / 5, 1);
+
+int ata_ratelimit(void)
+{
+	return __ratelimit(&ratelimit);
+}
+EXPORT_SYMBOL_GPL(ata_ratelimit);
+
+/**
+ *	ata_msleep - ATA EH owner aware msleep
+ *	@ap: ATA port to attribute the sleep to
+ *	@msecs: duration to sleep in milliseconds
+ *
+ *	Sleeps @msecs.  If the current task is owner of @ap's EH, the
+ *	ownership is released before going to sleep and reacquired
+ *	after the sleep is complete.  IOW, other ports sharing the
+ *	@ap->host will be allowed to own the EH while this task is
+ *	sleeping.
+ *
+ *	LOCKING:
+ *	Might sleep.
+ */
+void ata_msleep(struct ata_port *ap, unsigned int msecs)
+{
+	bool owns_eh = ap && ap->host->eh_owner == current;
+
+	if (owns_eh)
+		ata_eh_release(ap);
+
+	if (msecs < 20) {
+		unsigned long usecs = msecs * USEC_PER_MSEC;
+		usleep_range(usecs, usecs + 50);
+	} else {
+		msleep(msecs);
+	}
+
+	if (owns_eh)
+		ata_eh_acquire(ap);
+}
+EXPORT_SYMBOL_GPL(ata_msleep);
+
+/**
+ *	ata_wait_register - wait until register value changes
+ *	@ap: ATA port to wait register for, can be NULL
+ *	@reg: IO-mapped register
+ *	@mask: Mask to apply to read register value
+ *	@val: Wait condition
+ *	@interval: polling interval in milliseconds
+ *	@timeout: timeout in milliseconds
+ *
+ *	Waiting for some bits of register to change is a common
+ *	operation for ATA controllers.  This function reads 32bit LE
+ *	IO-mapped register @reg and tests for the following condition.
+ *
+ *	(*@reg & mask) != val
+ *
+ *	If the condition is met, it returns; otherwise, the process is
+ *	repeated after @interval_msec until timeout.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	The final register value.
+ */
+u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, u32 val,
+		      unsigned int interval, unsigned int timeout)
+{
+	unsigned long deadline;
+	u32 tmp;
+
+	tmp = ioread32(reg);
+
+	/* Calculate timeout _after_ the first read to make sure
+	 * preceding writes reach the controller before starting to
+	 * eat away the timeout.
+	 */
+	deadline = ata_deadline(jiffies, timeout);
+
+	while ((tmp & mask) == val && time_before(jiffies, deadline)) {
+		ata_msleep(ap, interval);
+		tmp = ioread32(reg);
+	}
+
+	return tmp;
+}
+EXPORT_SYMBOL_GPL(ata_wait_register);
+
+/*
+ * Dummy port_ops
+ */
+static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc)
+{
+	return AC_ERR_SYSTEM;
+}
+
+static void ata_dummy_error_handler(struct ata_port *ap)
+{
+	/* truly dummy */
+}
+
+struct ata_port_operations ata_dummy_port_ops = {
+	.qc_issue		= ata_dummy_qc_issue,
+	.error_handler		= ata_dummy_error_handler,
+	.sched_eh		= ata_std_sched_eh,
+	.end_eh			= ata_std_end_eh,
+};
+EXPORT_SYMBOL_GPL(ata_dummy_port_ops);
+
+const struct ata_port_info ata_dummy_port_info = {
+	.port_ops		= &ata_dummy_port_ops,
+};
+EXPORT_SYMBOL_GPL(ata_dummy_port_info);
+
+void ata_print_version(const struct device *dev, const char *version)
+{
+	dev_printk(KERN_DEBUG, dev, "version %s\n", version);
+}
+EXPORT_SYMBOL(ata_print_version);
+
+EXPORT_TRACEPOINT_SYMBOL_GPL(ata_tf_load);
+EXPORT_TRACEPOINT_SYMBOL_GPL(ata_exec_command);
+EXPORT_TRACEPOINT_SYMBOL_GPL(ata_bmdma_setup);
+EXPORT_TRACEPOINT_SYMBOL_GPL(ata_bmdma_start);
+EXPORT_TRACEPOINT_SYMBOL_GPL(ata_bmdma_status);
diff --git a/rr-cache/5c639b6a44944a6fab6878c590c4c42be4482011/preimage b/rr-cache/5c639b6a44944a6fab6878c590c4c42be4482011/preimage
new file mode 100644
index 000000000000..71e7137d69a7
--- /dev/null
+++ b/rr-cache/5c639b6a44944a6fab6878c590c4c42be4482011/preimage
@@ -0,0 +1,6655 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  libata-core.c - helper library for ATA
+ *
+ *  Copyright 2003-2004 Red Hat, Inc.  All rights reserved.
+ *  Copyright 2003-2004 Jeff Garzik
+ *
+ *  libata documentation is available via 'make {ps|pdf}docs',
+ *  as Documentation/driver-api/libata.rst
+ *
+ *  Hardware documentation available from http://www.t13.org/ and
+ *  http://www.sata-io.org/
+ *
+ *  Standards documents from:
+ *	http://www.t13.org (ATA standards, PCI DMA IDE spec)
+ *	http://www.t10.org (SCSI MMC - for ATAPI MMC)
+ *	http://www.sata-io.org (SATA)
+ *	http://www.compactflash.org (CF)
+ *	http://www.qic.org (QIC157 - Tape and DSC)
+ *	http://www.ce-ata.org (CE-ATA: not supported)
+ *
+ * libata is essentially a library of internal helper functions for
+ * low-level ATA host controller drivers.  As such, the API/ABI is
+ * likely to change as new drivers are added and updated.
+ * Do not depend on ABI/API stability.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/spinlock.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/time.h>
+#include <linux/interrupt.h>
+#include <linux/completion.h>
+#include <linux/suspend.h>
+#include <linux/workqueue.h>
+#include <linux/scatterlist.h>
+#include <linux/io.h>
+#include <linux/log2.h>
+#include <linux/slab.h>
+#include <linux/glob.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_host.h>
+#include <linux/libata.h>
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+#include <linux/cdrom.h>
+#include <linux/ratelimit.h>
+#include <linux/leds.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_device.h>
+#include <asm/setup.h>
+
+#define CREATE_TRACE_POINTS
+#include <trace/events/libata.h>
+
+#include "libata.h"
+#include "libata-transport.h"
+
+const struct ata_port_operations ata_base_port_ops = {
+	.prereset		= ata_std_prereset,
+	.postreset		= ata_std_postreset,
+	.error_handler		= ata_std_error_handler,
+	.sched_eh		= ata_std_sched_eh,
+	.end_eh			= ata_std_end_eh,
+};
+
+static unsigned int ata_dev_init_params(struct ata_device *dev,
+					u16 heads, u16 sectors);
+static unsigned int ata_dev_set_xfermode(struct ata_device *dev);
+static void ata_dev_xfermask(struct ata_device *dev);
+static unsigned int ata_dev_quirks(const struct ata_device *dev);
+
+static DEFINE_IDA(ata_ida);
+
+#ifdef CONFIG_ATA_FORCE
+struct ata_force_param {
+	const char	*name;
+	u8		cbl;
+	u8		spd_limit;
+	unsigned int	xfer_mask;
+	unsigned int	quirk_on;
+	unsigned int	quirk_off;
+	u16		lflags_on;
+	u16		lflags_off;
+};
+
+struct ata_force_ent {
+	int			port;
+	int			device;
+	struct ata_force_param	param;
+};
+
+static struct ata_force_ent *ata_force_tbl;
+static int ata_force_tbl_size;
+
+static char ata_force_param_buf[COMMAND_LINE_SIZE] __initdata;
+/* param_buf is thrown away after initialization, disallow read */
+module_param_string(force, ata_force_param_buf, sizeof(ata_force_param_buf), 0);
+MODULE_PARM_DESC(force, "Force ATA configurations including cable type, link speed and transfer mode (see Documentation/admin-guide/kernel-parameters.rst for details)");
+#endif
+
+static int atapi_enabled = 1;
+module_param(atapi_enabled, int, 0444);
+MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on [default])");
+
+static int atapi_dmadir = 0;
+module_param(atapi_dmadir, int, 0444);
+MODULE_PARM_DESC(atapi_dmadir, "Enable ATAPI DMADIR bridge support (0=off [default], 1=on)");
+
+int atapi_passthru16 = 1;
+module_param(atapi_passthru16, int, 0444);
+MODULE_PARM_DESC(atapi_passthru16, "Enable ATA_16 passthru for ATAPI devices (0=off, 1=on [default])");
+
+int libata_fua = 0;
+module_param_named(fua, libata_fua, int, 0444);
+MODULE_PARM_DESC(fua, "FUA support (0=off [default], 1=on)");
+
+static int ata_ignore_hpa;
+module_param_named(ignore_hpa, ata_ignore_hpa, int, 0644);
+MODULE_PARM_DESC(ignore_hpa, "Ignore HPA limit (0=keep BIOS limits, 1=ignore limits, using full disk)");
+
+static int libata_dma_mask = ATA_DMA_MASK_ATA|ATA_DMA_MASK_ATAPI|ATA_DMA_MASK_CFA;
+module_param_named(dma, libata_dma_mask, int, 0444);
+MODULE_PARM_DESC(dma, "DMA enable/disable (0x1==ATA, 0x2==ATAPI, 0x4==CF)");
+
+static int ata_probe_timeout;
+module_param(ata_probe_timeout, int, 0444);
+MODULE_PARM_DESC(ata_probe_timeout, "Set ATA probing timeout (seconds)");
+
+int libata_noacpi = 0;
+module_param_named(noacpi, libata_noacpi, int, 0444);
+MODULE_PARM_DESC(noacpi, "Disable the use of ACPI in probe/suspend/resume (0=off [default], 1=on)");
+
+int libata_allow_tpm = 0;
+module_param_named(allow_tpm, libata_allow_tpm, int, 0444);
+MODULE_PARM_DESC(allow_tpm, "Permit the use of TPM commands (0=off [default], 1=on)");
+
+static int atapi_an;
+module_param(atapi_an, int, 0444);
+MODULE_PARM_DESC(atapi_an, "Enable ATAPI AN media presence notification (0=0ff [default], 1=on)");
+
+MODULE_AUTHOR("Jeff Garzik");
+MODULE_DESCRIPTION("Library module for ATA devices");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+static inline bool ata_dev_print_info(const struct ata_device *dev)
+{
+	struct ata_eh_context *ehc = &dev->link->eh_context;
+
+	return ehc->i.flags & ATA_EHI_PRINTINFO;
+}
+
+/**
+ *	ata_link_next - link iteration helper
+ *	@link: the previous link, NULL to start
+ *	@ap: ATA port containing links to iterate
+ *	@mode: iteration mode, one of ATA_LITER_*
+ *
+ *	LOCKING:
+ *	Host lock or EH context.
+ *
+ *	RETURNS:
+ *	Pointer to the next link.
+ */
+struct ata_link *ata_link_next(struct ata_link *link, struct ata_port *ap,
+			       enum ata_link_iter_mode mode)
+{
+	BUG_ON(mode != ATA_LITER_EDGE &&
+	       mode != ATA_LITER_PMP_FIRST && mode != ATA_LITER_HOST_FIRST);
+
+	/* NULL link indicates start of iteration */
+	if (!link)
+		switch (mode) {
+		case ATA_LITER_EDGE:
+		case ATA_LITER_PMP_FIRST:
+			if (sata_pmp_attached(ap))
+				return ap->pmp_link;
+			fallthrough;
+		case ATA_LITER_HOST_FIRST:
+			return &ap->link;
+		}
+
+	/* we just iterated over the host link, what's next? */
+	if (link == &ap->link)
+		switch (mode) {
+		case ATA_LITER_HOST_FIRST:
+			if (sata_pmp_attached(ap))
+				return ap->pmp_link;
+			fallthrough;
+		case ATA_LITER_PMP_FIRST:
+			if (unlikely(ap->slave_link))
+				return ap->slave_link;
+			fallthrough;
+		case ATA_LITER_EDGE:
+			return NULL;
+		}
+
+	/* slave_link excludes PMP */
+	if (unlikely(link == ap->slave_link))
+		return NULL;
+
+	/* we were over a PMP link */
+	if (++link < ap->pmp_link + ap->nr_pmp_links)
+		return link;
+
+	if (mode == ATA_LITER_PMP_FIRST)
+		return &ap->link;
+
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(ata_link_next);
+
+/**
+ *	ata_dev_next - device iteration helper
+ *	@dev: the previous device, NULL to start
+ *	@link: ATA link containing devices to iterate
+ *	@mode: iteration mode, one of ATA_DITER_*
+ *
+ *	LOCKING:
+ *	Host lock or EH context.
+ *
+ *	RETURNS:
+ *	Pointer to the next device.
+ */
+struct ata_device *ata_dev_next(struct ata_device *dev, struct ata_link *link,
+				enum ata_dev_iter_mode mode)
+{
+	BUG_ON(mode != ATA_DITER_ENABLED && mode != ATA_DITER_ENABLED_REVERSE &&
+	       mode != ATA_DITER_ALL && mode != ATA_DITER_ALL_REVERSE);
+
+	/* NULL dev indicates start of iteration */
+	if (!dev)
+		switch (mode) {
+		case ATA_DITER_ENABLED:
+		case ATA_DITER_ALL:
+			dev = link->device;
+			goto check;
+		case ATA_DITER_ENABLED_REVERSE:
+		case ATA_DITER_ALL_REVERSE:
+			dev = link->device + ata_link_max_devices(link) - 1;
+			goto check;
+		}
+
+ next:
+	/* move to the next one */
+	switch (mode) {
+	case ATA_DITER_ENABLED:
+	case ATA_DITER_ALL:
+		if (++dev < link->device + ata_link_max_devices(link))
+			goto check;
+		return NULL;
+	case ATA_DITER_ENABLED_REVERSE:
+	case ATA_DITER_ALL_REVERSE:
+		if (--dev >= link->device)
+			goto check;
+		return NULL;
+	}
+
+ check:
+	if ((mode == ATA_DITER_ENABLED || mode == ATA_DITER_ENABLED_REVERSE) &&
+	    !ata_dev_enabled(dev))
+		goto next;
+	return dev;
+}
+EXPORT_SYMBOL_GPL(ata_dev_next);
+
+/**
+ *	ata_dev_phys_link - find physical link for a device
+ *	@dev: ATA device to look up physical link for
+ *
+ *	Look up physical link which @dev is attached to.  Note that
+ *	this is different from @dev->link only when @dev is on slave
+ *	link.  For all other cases, it's the same as @dev->link.
+ *
+ *	LOCKING:
+ *	Don't care.
+ *
+ *	RETURNS:
+ *	Pointer to the found physical link.
+ */
+struct ata_link *ata_dev_phys_link(struct ata_device *dev)
+{
+	struct ata_port *ap = dev->link->ap;
+
+	if (!ap->slave_link)
+		return dev->link;
+	if (!dev->devno)
+		return &ap->link;
+	return ap->slave_link;
+}
+
+#ifdef CONFIG_ATA_FORCE
+/**
+ *	ata_force_cbl - force cable type according to libata.force
+ *	@ap: ATA port of interest
+ *
+ *	Force cable type according to libata.force and whine about it.
+ *	The last entry which has matching port number is used, so it
+ *	can be specified as part of device force parameters.  For
+ *	example, both "a:40c,1.00:udma4" and "1.00:40c,udma4" have the
+ *	same effect.
+ *
+ *	LOCKING:
+ *	EH context.
+ */
+void ata_force_cbl(struct ata_port *ap)
+{
+	int i;
+
+	for (i = ata_force_tbl_size - 1; i >= 0; i--) {
+		const struct ata_force_ent *fe = &ata_force_tbl[i];
+
+		if (fe->port != -1 && fe->port != ap->print_id)
+			continue;
+
+		if (fe->param.cbl == ATA_CBL_NONE)
+			continue;
+
+		ap->cbl = fe->param.cbl;
+		ata_port_notice(ap, "FORCE: cable set to %s\n", fe->param.name);
+		return;
+	}
+}
+
+/**
+ *	ata_force_link_limits - force link limits according to libata.force
+ *	@link: ATA link of interest
+ *
+ *	Force link flags and SATA spd limit according to libata.force
+ *	and whine about it.  When only the port part is specified
+ *	(e.g. 1:), the limit applies to all links connected to both
+ *	the host link and all fan-out ports connected via PMP.  If the
+ *	device part is specified as 0 (e.g. 1.00:), it specifies the
+ *	first fan-out link not the host link.  Device number 15 always
+ *	points to the host link whether PMP is attached or not.  If the
+ *	controller has slave link, device number 16 points to it.
+ *
+ *	LOCKING:
+ *	EH context.
+ */
+static void ata_force_link_limits(struct ata_link *link)
+{
+	bool did_spd = false;
+	int linkno = link->pmp;
+	int i;
+
+	if (ata_is_host_link(link))
+		linkno += 15;
+
+	for (i = ata_force_tbl_size - 1; i >= 0; i--) {
+		const struct ata_force_ent *fe = &ata_force_tbl[i];
+
+		if (fe->port != -1 && fe->port != link->ap->print_id)
+			continue;
+
+		if (fe->device != -1 && fe->device != linkno)
+			continue;
+
+		/* only honor the first spd limit */
+		if (!did_spd && fe->param.spd_limit) {
+			link->hw_sata_spd_limit = (1 << fe->param.spd_limit) - 1;
+			ata_link_notice(link, "FORCE: PHY spd limit set to %s\n",
+					fe->param.name);
+			did_spd = true;
+		}
+
+		/* let lflags stack */
+		if (fe->param.lflags_on) {
+			link->flags |= fe->param.lflags_on;
+			ata_link_notice(link,
+					"FORCE: link flag 0x%x forced -> 0x%x\n",
+					fe->param.lflags_on, link->flags);
+		}
+		if (fe->param.lflags_off) {
+			link->flags &= ~fe->param.lflags_off;
+			ata_link_notice(link,
+				"FORCE: link flag 0x%x cleared -> 0x%x\n",
+				fe->param.lflags_off, link->flags);
+		}
+	}
+}
+
+/**
+ *	ata_force_xfermask - force xfermask according to libata.force
+ *	@dev: ATA device of interest
+ *
+ *	Force xfer_mask according to libata.force and whine about it.
+ *	For consistency with link selection, device number 15 selects
+ *	the first device connected to the host link.
+ *
+ *	LOCKING:
+ *	EH context.
+ */
+static void ata_force_xfermask(struct ata_device *dev)
+{
+	int devno = dev->link->pmp + dev->devno;
+	int alt_devno = devno;
+	int i;
+
+	/* allow n.15/16 for devices attached to host port */
+	if (ata_is_host_link(dev->link))
+		alt_devno += 15;
+
+	for (i = ata_force_tbl_size - 1; i >= 0; i--) {
+		const struct ata_force_ent *fe = &ata_force_tbl[i];
+		unsigned int pio_mask, mwdma_mask, udma_mask;
+
+		if (fe->port != -1 && fe->port != dev->link->ap->print_id)
+			continue;
+
+		if (fe->device != -1 && fe->device != devno &&
+		    fe->device != alt_devno)
+			continue;
+
+		if (!fe->param.xfer_mask)
+			continue;
+
+		ata_unpack_xfermask(fe->param.xfer_mask,
+				    &pio_mask, &mwdma_mask, &udma_mask);
+		if (udma_mask)
+			dev->udma_mask = udma_mask;
+		else if (mwdma_mask) {
+			dev->udma_mask = 0;
+			dev->mwdma_mask = mwdma_mask;
+		} else {
+			dev->udma_mask = 0;
+			dev->mwdma_mask = 0;
+			dev->pio_mask = pio_mask;
+		}
+
+		ata_dev_notice(dev, "FORCE: xfer_mask set to %s\n",
+			       fe->param.name);
+		return;
+	}
+}
+
+/**
+ *	ata_force_quirks - force quirks according to libata.force
+ *	@dev: ATA device of interest
+ *
+ *	Force quirks according to libata.force and whine about it.
+ *	For consistency with link selection, device number 15 selects
+ *	the first device connected to the host link.
+ *
+ *	LOCKING:
+ *	EH context.
+ */
+static void ata_force_quirks(struct ata_device *dev)
+{
+	int devno = dev->link->pmp + dev->devno;
+	int alt_devno = devno;
+	int i;
+
+	/* allow n.15/16 for devices attached to host port */
+	if (ata_is_host_link(dev->link))
+		alt_devno += 15;
+
+	for (i = 0; i < ata_force_tbl_size; i++) {
+		const struct ata_force_ent *fe = &ata_force_tbl[i];
+
+		if (fe->port != -1 && fe->port != dev->link->ap->print_id)
+			continue;
+
+		if (fe->device != -1 && fe->device != devno &&
+		    fe->device != alt_devno)
+			continue;
+
+		if (!(~dev->quirks & fe->param.quirk_on) &&
+		    !(dev->quirks & fe->param.quirk_off))
+			continue;
+
+		dev->quirks |= fe->param.quirk_on;
+		dev->quirks &= ~fe->param.quirk_off;
+
+		ata_dev_notice(dev, "FORCE: modified (%s)\n",
+			       fe->param.name);
+	}
+}
+#else
+static inline void ata_force_link_limits(struct ata_link *link) { }
+static inline void ata_force_xfermask(struct ata_device *dev) { }
+static inline void ata_force_quirks(struct ata_device *dev) { }
+#endif
+
+/**
+ *	atapi_cmd_type - Determine ATAPI command type from SCSI opcode
+ *	@opcode: SCSI opcode
+ *
+ *	Determine ATAPI command type from @opcode.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	ATAPI_{READ|WRITE|READ_CD|PASS_THRU|MISC}
+ */
+int atapi_cmd_type(u8 opcode)
+{
+	switch (opcode) {
+	case GPCMD_READ_10:
+	case GPCMD_READ_12:
+		return ATAPI_READ;
+
+	case GPCMD_WRITE_10:
+	case GPCMD_WRITE_12:
+	case GPCMD_WRITE_AND_VERIFY_10:
+		return ATAPI_WRITE;
+
+	case GPCMD_READ_CD:
+	case GPCMD_READ_CD_MSF:
+		return ATAPI_READ_CD;
+
+	case ATA_16:
+	case ATA_12:
+		if (atapi_passthru16)
+			return ATAPI_PASS_THRU;
+		fallthrough;
+	default:
+		return ATAPI_MISC;
+	}
+}
+EXPORT_SYMBOL_GPL(atapi_cmd_type);
+
+static const u8 ata_rw_cmds[] = {
+	/* pio multi */
+	ATA_CMD_READ_MULTI,
+	ATA_CMD_WRITE_MULTI,
+	ATA_CMD_READ_MULTI_EXT,
+	ATA_CMD_WRITE_MULTI_EXT,
+	0,
+	0,
+	0,
+	0,
+	/* pio */
+	ATA_CMD_PIO_READ,
+	ATA_CMD_PIO_WRITE,
+	ATA_CMD_PIO_READ_EXT,
+	ATA_CMD_PIO_WRITE_EXT,
+	0,
+	0,
+	0,
+	0,
+	/* dma */
+	ATA_CMD_READ,
+	ATA_CMD_WRITE,
+	ATA_CMD_READ_EXT,
+	ATA_CMD_WRITE_EXT,
+	0,
+	0,
+	0,
+	ATA_CMD_WRITE_FUA_EXT
+};
+
+/**
+ *	ata_set_rwcmd_protocol - set taskfile r/w command and protocol
+ *	@dev: target device for the taskfile
+ *	@tf: taskfile to examine and configure
+ *
+ *	Examine the device configuration and tf->flags to determine
+ *	the proper read/write command and protocol to use for @tf.
+ *
+ *	LOCKING:
+ *	caller.
+ */
+static bool ata_set_rwcmd_protocol(struct ata_device *dev,
+				   struct ata_taskfile *tf)
+{
+	u8 cmd;
+
+	int index, fua, lba48, write;
+
+	fua = (tf->flags & ATA_TFLAG_FUA) ? 4 : 0;
+	lba48 = (tf->flags & ATA_TFLAG_LBA48) ? 2 : 0;
+	write = (tf->flags & ATA_TFLAG_WRITE) ? 1 : 0;
+
+	if (dev->flags & ATA_DFLAG_PIO) {
+		tf->protocol = ATA_PROT_PIO;
+		index = dev->multi_count ? 0 : 8;
+	} else if (lba48 && (dev->link->ap->flags & ATA_FLAG_PIO_LBA48)) {
+		/* Unable to use DMA due to host limitation */
+		tf->protocol = ATA_PROT_PIO;
+		index = dev->multi_count ? 0 : 8;
+	} else {
+		tf->protocol = ATA_PROT_DMA;
+		index = 16;
+	}
+
+	cmd = ata_rw_cmds[index + fua + lba48 + write];
+	if (!cmd)
+		return false;
+
+	tf->command = cmd;
+
+	return true;
+}
+
+/**
+ *	ata_tf_read_block - Read block address from ATA taskfile
+ *	@tf: ATA taskfile of interest
+ *	@dev: ATA device @tf belongs to
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	Read block address from @tf.  This function can handle all
+ *	three address formats - LBA, LBA48 and CHS.  tf->protocol and
+ *	flags select the address format to use.
+ *
+ *	RETURNS:
+ *	Block address read from @tf.
+ */
+u64 ata_tf_read_block(const struct ata_taskfile *tf, struct ata_device *dev)
+{
+	u64 block = 0;
+
+	if (tf->flags & ATA_TFLAG_LBA) {
+		if (tf->flags & ATA_TFLAG_LBA48) {
+			block |= (u64)tf->hob_lbah << 40;
+			block |= (u64)tf->hob_lbam << 32;
+			block |= (u64)tf->hob_lbal << 24;
+		} else
+			block |= (tf->device & 0xf) << 24;
+
+		block |= tf->lbah << 16;
+		block |= tf->lbam << 8;
+		block |= tf->lbal;
+	} else {
+		u32 cyl, head, sect;
+
+		cyl = tf->lbam | (tf->lbah << 8);
+		head = tf->device & 0xf;
+		sect = tf->lbal;
+
+		if (!sect) {
+			ata_dev_warn(dev,
+				     "device reported invalid CHS sector 0\n");
+			return U64_MAX;
+		}
+
+		block = (cyl * dev->heads + head) * dev->sectors + sect - 1;
+	}
+
+	return block;
+}
+
+/*
+ * Set a taskfile command duration limit index.
+ */
+static inline void ata_set_tf_cdl(struct ata_queued_cmd *qc, int cdl)
+{
+	struct ata_taskfile *tf = &qc->tf;
+
+	if (tf->protocol == ATA_PROT_NCQ)
+		tf->auxiliary |= cdl;
+	else
+		tf->feature |= cdl;
+
+	/*
+	 * Mark this command as having a CDL and request the result
+	 * task file so that we can inspect the sense data available
+	 * bit on completion.
+	 */
+	qc->flags |= ATA_QCFLAG_HAS_CDL | ATA_QCFLAG_RESULT_TF;
+}
+
+/**
+ *	ata_build_rw_tf - Build ATA taskfile for given read/write request
+ *	@qc: Metadata associated with the taskfile to build
+ *	@block: Block address
+ *	@n_block: Number of blocks
+ *	@tf_flags: RW/FUA etc...
+ *	@cdl: Command duration limit index
+ *	@class: IO priority class
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	Build ATA taskfile for the command @qc for read/write request described
+ *	by @block, @n_block, @tf_flags and @class.
+ *
+ *	RETURNS:
+ *
+ *	0 on success, -ERANGE if the request is too large for @dev,
+ *	-EINVAL if the request is invalid.
+ */
+int ata_build_rw_tf(struct ata_queued_cmd *qc, u64 block, u32 n_block,
+		    unsigned int tf_flags, int cdl, int class)
+{
+	struct ata_taskfile *tf = &qc->tf;
+	struct ata_device *dev = qc->dev;
+
+	tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
+	tf->flags |= tf_flags;
+
+	if (ata_ncq_enabled(dev)) {
+		/* yay, NCQ */
+		if (!lba_48_ok(block, n_block))
+			return -ERANGE;
+
+		tf->protocol = ATA_PROT_NCQ;
+		tf->flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
+
+		if (tf->flags & ATA_TFLAG_WRITE)
+			tf->command = ATA_CMD_FPDMA_WRITE;
+		else
+			tf->command = ATA_CMD_FPDMA_READ;
+
+		tf->nsect = qc->hw_tag << 3;
+		tf->hob_feature = (n_block >> 8) & 0xff;
+		tf->feature = n_block & 0xff;
+
+		tf->hob_lbah = (block >> 40) & 0xff;
+		tf->hob_lbam = (block >> 32) & 0xff;
+		tf->hob_lbal = (block >> 24) & 0xff;
+		tf->lbah = (block >> 16) & 0xff;
+		tf->lbam = (block >> 8) & 0xff;
+		tf->lbal = block & 0xff;
+
+		tf->device = ATA_LBA;
+		if (tf->flags & ATA_TFLAG_FUA)
+			tf->device |= 1 << 7;
+
+		if (dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLED &&
+		    class == IOPRIO_CLASS_RT)
+			tf->hob_nsect |= ATA_PRIO_HIGH << ATA_SHIFT_PRIO;
+
+		if ((dev->flags & ATA_DFLAG_CDL_ENABLED) && cdl)
+			ata_set_tf_cdl(qc, cdl);
+
+	} else if (dev->flags & ATA_DFLAG_LBA) {
+		tf->flags |= ATA_TFLAG_LBA;
+
+		if ((dev->flags & ATA_DFLAG_CDL_ENABLED) && cdl)
+			ata_set_tf_cdl(qc, cdl);
+
+		/* Both FUA writes and a CDL index require 48-bit commands */
+		if (!(tf->flags & ATA_TFLAG_FUA) &&
+		    !(qc->flags & ATA_QCFLAG_HAS_CDL) &&
+		    lba_28_ok(block, n_block)) {
+			/* use LBA28 */
+			tf->device |= (block >> 24) & 0xf;
+		} else if (lba_48_ok(block, n_block)) {
+			if (!(dev->flags & ATA_DFLAG_LBA48))
+				return -ERANGE;
+
+			/* use LBA48 */
+			tf->flags |= ATA_TFLAG_LBA48;
+
+			tf->hob_nsect = (n_block >> 8) & 0xff;
+
+			tf->hob_lbah = (block >> 40) & 0xff;
+			tf->hob_lbam = (block >> 32) & 0xff;
+			tf->hob_lbal = (block >> 24) & 0xff;
+		} else {
+			/* request too large even for LBA48 */
+			return -ERANGE;
+		}
+
+		if (unlikely(!ata_set_rwcmd_protocol(dev, tf)))
+			return -EINVAL;
+
+		tf->nsect = n_block & 0xff;
+
+		tf->lbah = (block >> 16) & 0xff;
+		tf->lbam = (block >> 8) & 0xff;
+		tf->lbal = block & 0xff;
+
+		tf->device |= ATA_LBA;
+	} else {
+		/* CHS */
+		u32 sect, head, cyl, track;
+
+		/* The request -may- be too large for CHS addressing. */
+		if (!lba_28_ok(block, n_block))
+			return -ERANGE;
+
+		if (unlikely(!ata_set_rwcmd_protocol(dev, tf)))
+			return -EINVAL;
+
+		/* Convert LBA to CHS */
+		track = (u32)block / dev->sectors;
+		cyl   = track / dev->heads;
+		head  = track % dev->heads;
+		sect  = (u32)block % dev->sectors + 1;
+
+		/* Check whether the converted CHS can fit.
+		   Cylinder: 0-65535
+		   Head: 0-15
+		   Sector: 1-255*/
+		if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect))
+			return -ERANGE;
+
+		tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */
+		tf->lbal = sect;
+		tf->lbam = cyl;
+		tf->lbah = cyl >> 8;
+		tf->device |= head;
+	}
+
+	return 0;
+}
+
+/**
+ *	ata_pack_xfermask - Pack pio, mwdma and udma masks into xfer_mask
+ *	@pio_mask: pio_mask
+ *	@mwdma_mask: mwdma_mask
+ *	@udma_mask: udma_mask
+ *
+ *	Pack @pio_mask, @mwdma_mask and @udma_mask into a single
+ *	unsigned int xfer_mask.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Packed xfer_mask.
+ */
+unsigned int ata_pack_xfermask(unsigned int pio_mask,
+			       unsigned int mwdma_mask,
+			       unsigned int udma_mask)
+{
+	return	((pio_mask << ATA_SHIFT_PIO) & ATA_MASK_PIO) |
+		((mwdma_mask << ATA_SHIFT_MWDMA) & ATA_MASK_MWDMA) |
+		((udma_mask << ATA_SHIFT_UDMA) & ATA_MASK_UDMA);
+}
+EXPORT_SYMBOL_GPL(ata_pack_xfermask);
+
+/**
+ *	ata_unpack_xfermask - Unpack xfer_mask into pio, mwdma and udma masks
+ *	@xfer_mask: xfer_mask to unpack
+ *	@pio_mask: resulting pio_mask
+ *	@mwdma_mask: resulting mwdma_mask
+ *	@udma_mask: resulting udma_mask
+ *
+ *	Unpack @xfer_mask into @pio_mask, @mwdma_mask and @udma_mask.
+ *	Any NULL destination masks will be ignored.
+ */
+void ata_unpack_xfermask(unsigned int xfer_mask, unsigned int *pio_mask,
+			 unsigned int *mwdma_mask, unsigned int *udma_mask)
+{
+	if (pio_mask)
+		*pio_mask = (xfer_mask & ATA_MASK_PIO) >> ATA_SHIFT_PIO;
+	if (mwdma_mask)
+		*mwdma_mask = (xfer_mask & ATA_MASK_MWDMA) >> ATA_SHIFT_MWDMA;
+	if (udma_mask)
+		*udma_mask = (xfer_mask & ATA_MASK_UDMA) >> ATA_SHIFT_UDMA;
+}
+
+static const struct ata_xfer_ent {
+	int shift, bits;
+	u8 base;
+} ata_xfer_tbl[] = {
+	{ ATA_SHIFT_PIO, ATA_NR_PIO_MODES, XFER_PIO_0 },
+	{ ATA_SHIFT_MWDMA, ATA_NR_MWDMA_MODES, XFER_MW_DMA_0 },
+	{ ATA_SHIFT_UDMA, ATA_NR_UDMA_MODES, XFER_UDMA_0 },
+	{ -1, },
+};
+
+/**
+ *	ata_xfer_mask2mode - Find matching XFER_* for the given xfer_mask
+ *	@xfer_mask: xfer_mask of interest
+ *
+ *	Return matching XFER_* value for @xfer_mask.  Only the highest
+ *	bit of @xfer_mask is considered.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Matching XFER_* value, 0xff if no match found.
+ */
+u8 ata_xfer_mask2mode(unsigned int xfer_mask)
+{
+	int highbit = fls(xfer_mask) - 1;
+	const struct ata_xfer_ent *ent;
+
+	for (ent = ata_xfer_tbl; ent->shift >= 0; ent++)
+		if (highbit >= ent->shift && highbit < ent->shift + ent->bits)
+			return ent->base + highbit - ent->shift;
+	return 0xff;
+}
+EXPORT_SYMBOL_GPL(ata_xfer_mask2mode);
+
+/**
+ *	ata_xfer_mode2mask - Find matching xfer_mask for XFER_*
+ *	@xfer_mode: XFER_* of interest
+ *
+ *	Return matching xfer_mask for @xfer_mode.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Matching xfer_mask, 0 if no match found.
+ */
+unsigned int ata_xfer_mode2mask(u8 xfer_mode)
+{
+	const struct ata_xfer_ent *ent;
+
+	for (ent = ata_xfer_tbl; ent->shift >= 0; ent++)
+		if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits)
+			return ((2 << (ent->shift + xfer_mode - ent->base)) - 1)
+				& ~((1 << ent->shift) - 1);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ata_xfer_mode2mask);
+
+/**
+ *	ata_xfer_mode2shift - Find matching xfer_shift for XFER_*
+ *	@xfer_mode: XFER_* of interest
+ *
+ *	Return matching xfer_shift for @xfer_mode.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Matching xfer_shift, -1 if no match found.
+ */
+int ata_xfer_mode2shift(u8 xfer_mode)
+{
+	const struct ata_xfer_ent *ent;
+
+	for (ent = ata_xfer_tbl; ent->shift >= 0; ent++)
+		if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits)
+			return ent->shift;
+	return -1;
+}
+EXPORT_SYMBOL_GPL(ata_xfer_mode2shift);
+
+/**
+ *	ata_mode_string - convert xfer_mask to string
+ *	@xfer_mask: mask of bits supported; only highest bit counts.
+ *
+ *	Determine string which represents the highest speed
+ *	(highest bit in @modemask).
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Constant C string representing highest speed listed in
+ *	@mode_mask, or the constant C string "<n/a>".
+ */
+const char *ata_mode_string(unsigned int xfer_mask)
+{
+	static const char * const xfer_mode_str[] = {
+		"PIO0",
+		"PIO1",
+		"PIO2",
+		"PIO3",
+		"PIO4",
+		"PIO5",
+		"PIO6",
+		"MWDMA0",
+		"MWDMA1",
+		"MWDMA2",
+		"MWDMA3",
+		"MWDMA4",
+		"UDMA/16",
+		"UDMA/25",
+		"UDMA/33",
+		"UDMA/44",
+		"UDMA/66",
+		"UDMA/100",
+		"UDMA/133",
+		"UDMA7",
+	};
+	int highbit;
+
+	highbit = fls(xfer_mask) - 1;
+	if (highbit >= 0 && highbit < ARRAY_SIZE(xfer_mode_str))
+		return xfer_mode_str[highbit];
+	return "<n/a>";
+}
+EXPORT_SYMBOL_GPL(ata_mode_string);
+
+const char *sata_spd_string(unsigned int spd)
+{
+	static const char * const spd_str[] = {
+		"1.5 Gbps",
+		"3.0 Gbps",
+		"6.0 Gbps",
+	};
+
+	if (spd == 0 || (spd - 1) >= ARRAY_SIZE(spd_str))
+		return "<unknown>";
+	return spd_str[spd - 1];
+}
+
+/**
+ *	ata_dev_classify - determine device type based on ATA-spec signature
+ *	@tf: ATA taskfile register set for device to be identified
+ *
+ *	Determine from taskfile register contents whether a device is
+ *	ATA or ATAPI, as per "Signature and persistence" section
+ *	of ATA/PI spec (volume 1, sect 5.14).
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP,
+ *	%ATA_DEV_ZAC, or %ATA_DEV_UNKNOWN the event of failure.
+ */
+unsigned int ata_dev_classify(const struct ata_taskfile *tf)
+{
+	/* Apple's open source Darwin code hints that some devices only
+	 * put a proper signature into the LBA mid/high registers,
+	 * So, we only check those.  It's sufficient for uniqueness.
+	 *
+	 * ATA/ATAPI-7 (d1532v1r1: Feb. 19, 2003) specified separate
+	 * signatures for ATA and ATAPI devices attached on SerialATA,
+	 * 0x3c/0xc3 and 0x69/0x96 respectively.  However, SerialATA
+	 * spec has never mentioned about using different signatures
+	 * for ATA/ATAPI devices.  Then, Serial ATA II: Port
+	 * Multiplier specification began to use 0x69/0x96 to identify
+	 * port multpliers and 0x3c/0xc3 to identify SEMB device.
+	 * ATA/ATAPI-7 dropped descriptions about 0x3c/0xc3 and
+	 * 0x69/0x96 shortly and described them as reserved for
+	 * SerialATA.
+	 *
+	 * We follow the current spec and consider that 0x69/0x96
+	 * identifies a port multiplier and 0x3c/0xc3 a SEMB device.
+	 * Unfortunately, WDC WD1600JS-62MHB5 (a hard drive) reports
+	 * SEMB signature.  This is worked around in
+	 * ata_dev_read_id().
+	 */
+	if (tf->lbam == 0 && tf->lbah == 0)
+		return ATA_DEV_ATA;
+
+	if (tf->lbam == 0x14 && tf->lbah == 0xeb)
+		return ATA_DEV_ATAPI;
+
+	if (tf->lbam == 0x69 && tf->lbah == 0x96)
+		return ATA_DEV_PMP;
+
+	if (tf->lbam == 0x3c && tf->lbah == 0xc3)
+		return ATA_DEV_SEMB;
+
+	if (tf->lbam == 0xcd && tf->lbah == 0xab)
+		return ATA_DEV_ZAC;
+
+	return ATA_DEV_UNKNOWN;
+}
+EXPORT_SYMBOL_GPL(ata_dev_classify);
+
+/**
+ *	ata_id_string - Convert IDENTIFY DEVICE page into string
+ *	@id: IDENTIFY DEVICE results we will examine
+ *	@s: string into which data is output
+ *	@ofs: offset into identify device page
+ *	@len: length of string to return. must be an even number.
+ *
+ *	The strings in the IDENTIFY DEVICE page are broken up into
+ *	16-bit chunks.  Run through the string, and output each
+ *	8-bit chunk linearly, regardless of platform.
+ *
+ *	LOCKING:
+ *	caller.
+ */
+
+void ata_id_string(const u16 *id, unsigned char *s,
+		   unsigned int ofs, unsigned int len)
+{
+	unsigned int c;
+
+	BUG_ON(len & 1);
+
+	while (len > 0) {
+		c = id[ofs] >> 8;
+		*s = c;
+		s++;
+
+		c = id[ofs] & 0xff;
+		*s = c;
+		s++;
+
+		ofs++;
+		len -= 2;
+	}
+}
+EXPORT_SYMBOL_GPL(ata_id_string);
+
+/**
+ *	ata_id_c_string - Convert IDENTIFY DEVICE page into C string
+ *	@id: IDENTIFY DEVICE results we will examine
+ *	@s: string into which data is output
+ *	@ofs: offset into identify device page
+ *	@len: length of string to return. must be an odd number.
+ *
+ *	This function is identical to ata_id_string except that it
+ *	trims trailing spaces and terminates the resulting string with
+ *	null.  @len must be actual maximum length (even number) + 1.
+ *
+ *	LOCKING:
+ *	caller.
+ */
+void ata_id_c_string(const u16 *id, unsigned char *s,
+		     unsigned int ofs, unsigned int len)
+{
+	unsigned char *p;
+
+	ata_id_string(id, s, ofs, len - 1);
+
+	p = s + strnlen(s, len - 1);
+	while (p > s && p[-1] == ' ')
+		p--;
+	*p = '\0';
+}
+EXPORT_SYMBOL_GPL(ata_id_c_string);
+
+static u64 ata_id_n_sectors(const u16 *id)
+{
+	if (ata_id_has_lba(id)) {
+		if (ata_id_has_lba48(id))
+			return ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
+
+		return ata_id_u32(id, ATA_ID_LBA_CAPACITY);
+	}
+
+	if (ata_id_current_chs_valid(id))
+		return (u32)id[ATA_ID_CUR_CYLS] * (u32)id[ATA_ID_CUR_HEADS] *
+		       (u32)id[ATA_ID_CUR_SECTORS];
+
+	return (u32)id[ATA_ID_CYLS] * (u32)id[ATA_ID_HEADS] *
+	       (u32)id[ATA_ID_SECTORS];
+}
+
+u64 ata_tf_to_lba48(const struct ata_taskfile *tf)
+{
+	u64 sectors = 0;
+
+	sectors |= ((u64)(tf->hob_lbah & 0xff)) << 40;
+	sectors |= ((u64)(tf->hob_lbam & 0xff)) << 32;
+	sectors |= ((u64)(tf->hob_lbal & 0xff)) << 24;
+	sectors |= (tf->lbah & 0xff) << 16;
+	sectors |= (tf->lbam & 0xff) << 8;
+	sectors |= (tf->lbal & 0xff);
+
+	return sectors;
+}
+
+u64 ata_tf_to_lba(const struct ata_taskfile *tf)
+{
+	u64 sectors = 0;
+
+	sectors |= (tf->device & 0x0f) << 24;
+	sectors |= (tf->lbah & 0xff) << 16;
+	sectors |= (tf->lbam & 0xff) << 8;
+	sectors |= (tf->lbal & 0xff);
+
+	return sectors;
+}
+
+/**
+ *	ata_read_native_max_address - Read native max address
+ *	@dev: target device
+ *	@max_sectors: out parameter for the result native max address
+ *
+ *	Perform an LBA48 or LBA28 native size query upon the device in
+ *	question.
+ *
+ *	RETURNS:
+ *	0 on success, -EACCES if command is aborted by the drive.
+ *	-EIO on other errors.
+ */
+static int ata_read_native_max_address(struct ata_device *dev, u64 *max_sectors)
+{
+	unsigned int err_mask;
+	struct ata_taskfile tf;
+	int lba48 = ata_id_has_lba48(dev->id);
+
+	ata_tf_init(dev, &tf);
+
+	/* always clear all address registers */
+	tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
+
+	if (lba48) {
+		tf.command = ATA_CMD_READ_NATIVE_MAX_EXT;
+		tf.flags |= ATA_TFLAG_LBA48;
+	} else
+		tf.command = ATA_CMD_READ_NATIVE_MAX;
+
+	tf.protocol = ATA_PROT_NODATA;
+	tf.device |= ATA_LBA;
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+	if (err_mask) {
+		ata_dev_warn(dev,
+			     "failed to read native max address (err_mask=0x%x)\n",
+			     err_mask);
+		if (err_mask == AC_ERR_DEV && (tf.error & ATA_ABORTED))
+			return -EACCES;
+		return -EIO;
+	}
+
+	if (lba48)
+		*max_sectors = ata_tf_to_lba48(&tf) + 1;
+	else
+		*max_sectors = ata_tf_to_lba(&tf) + 1;
+	if (dev->quirks & ATA_QUIRK_HPA_SIZE)
+		(*max_sectors)--;
+	return 0;
+}
+
+/**
+ *	ata_set_max_sectors - Set max sectors
+ *	@dev: target device
+ *	@new_sectors: new max sectors value to set for the device
+ *
+ *	Set max sectors of @dev to @new_sectors.
+ *
+ *	RETURNS:
+ *	0 on success, -EACCES if command is aborted or denied (due to
+ *	previous non-volatile SET_MAX) by the drive.  -EIO on other
+ *	errors.
+ */
+static int ata_set_max_sectors(struct ata_device *dev, u64 new_sectors)
+{
+	unsigned int err_mask;
+	struct ata_taskfile tf;
+	int lba48 = ata_id_has_lba48(dev->id);
+
+	new_sectors--;
+
+	ata_tf_init(dev, &tf);
+
+	tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
+
+	if (lba48) {
+		tf.command = ATA_CMD_SET_MAX_EXT;
+		tf.flags |= ATA_TFLAG_LBA48;
+
+		tf.hob_lbal = (new_sectors >> 24) & 0xff;
+		tf.hob_lbam = (new_sectors >> 32) & 0xff;
+		tf.hob_lbah = (new_sectors >> 40) & 0xff;
+	} else {
+		tf.command = ATA_CMD_SET_MAX;
+
+		tf.device |= (new_sectors >> 24) & 0xf;
+	}
+
+	tf.protocol = ATA_PROT_NODATA;
+	tf.device |= ATA_LBA;
+
+	tf.lbal = (new_sectors >> 0) & 0xff;
+	tf.lbam = (new_sectors >> 8) & 0xff;
+	tf.lbah = (new_sectors >> 16) & 0xff;
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+	if (err_mask) {
+		ata_dev_warn(dev,
+			     "failed to set max address (err_mask=0x%x)\n",
+			     err_mask);
+		if (err_mask == AC_ERR_DEV &&
+		    (tf.error & (ATA_ABORTED | ATA_IDNF)))
+			return -EACCES;
+		return -EIO;
+	}
+
+	return 0;
+}
+
+/**
+ *	ata_hpa_resize		-	Resize a device with an HPA set
+ *	@dev: Device to resize
+ *
+ *	Read the size of an LBA28 or LBA48 disk with HPA features and resize
+ *	it if required to the full size of the media. The caller must check
+ *	the drive has the HPA feature set enabled.
+ *
+ *	RETURNS:
+ *	0 on success, -errno on failure.
+ */
+static int ata_hpa_resize(struct ata_device *dev)
+{
+	bool print_info = ata_dev_print_info(dev);
+	bool unlock_hpa = ata_ignore_hpa || dev->flags & ATA_DFLAG_UNLOCK_HPA;
+	u64 sectors = ata_id_n_sectors(dev->id);
+	u64 native_sectors;
+	int rc;
+
+	/* do we need to do it? */
+	if ((dev->class != ATA_DEV_ATA && dev->class != ATA_DEV_ZAC) ||
+	    !ata_id_has_lba(dev->id) || !ata_id_hpa_enabled(dev->id) ||
+	    (dev->quirks & ATA_QUIRK_BROKEN_HPA))
+		return 0;
+
+	/* read native max address */
+	rc = ata_read_native_max_address(dev, &native_sectors);
+	if (rc) {
+		/* If device aborted the command or HPA isn't going to
+		 * be unlocked, skip HPA resizing.
+		 */
+		if (rc == -EACCES || !unlock_hpa) {
+			ata_dev_warn(dev,
+				     "HPA support seems broken, skipping HPA handling\n");
+			dev->quirks |= ATA_QUIRK_BROKEN_HPA;
+
+			/* we can continue if device aborted the command */
+			if (rc == -EACCES)
+				rc = 0;
+		}
+
+		return rc;
+	}
+	dev->n_native_sectors = native_sectors;
+
+	/* nothing to do? */
+	if (native_sectors <= sectors || !unlock_hpa) {
+		if (!print_info || native_sectors == sectors)
+			return 0;
+
+		if (native_sectors > sectors)
+			ata_dev_info(dev,
+				"HPA detected: current %llu, native %llu\n",
+				(unsigned long long)sectors,
+				(unsigned long long)native_sectors);
+		else if (native_sectors < sectors)
+			ata_dev_warn(dev,
+				"native sectors (%llu) is smaller than sectors (%llu)\n",
+				(unsigned long long)native_sectors,
+				(unsigned long long)sectors);
+		return 0;
+	}
+
+	/* let's unlock HPA */
+	rc = ata_set_max_sectors(dev, native_sectors);
+	if (rc == -EACCES) {
+		/* if device aborted the command, skip HPA resizing */
+		ata_dev_warn(dev,
+			     "device aborted resize (%llu -> %llu), skipping HPA handling\n",
+			     (unsigned long long)sectors,
+			     (unsigned long long)native_sectors);
+		dev->quirks |= ATA_QUIRK_BROKEN_HPA;
+		return 0;
+	} else if (rc)
+		return rc;
+
+	/* re-read IDENTIFY data */
+	rc = ata_dev_reread_id(dev, 0);
+	if (rc) {
+		ata_dev_err(dev,
+			    "failed to re-read IDENTIFY data after HPA resizing\n");
+		return rc;
+	}
+
+	if (print_info) {
+		u64 new_sectors = ata_id_n_sectors(dev->id);
+		ata_dev_info(dev,
+			"HPA unlocked: %llu -> %llu, native %llu\n",
+			(unsigned long long)sectors,
+			(unsigned long long)new_sectors,
+			(unsigned long long)native_sectors);
+	}
+
+	return 0;
+}
+
+/**
+ *	ata_dump_id - IDENTIFY DEVICE info debugging output
+ *	@dev: device from which the information is fetched
+ *	@id: IDENTIFY DEVICE page to dump
+ *
+ *	Dump selected 16-bit words from the given IDENTIFY DEVICE
+ *	page.
+ *
+ *	LOCKING:
+ *	caller.
+ */
+
+static inline void ata_dump_id(struct ata_device *dev, const u16 *id)
+{
+	ata_dev_dbg(dev,
+		"49==0x%04x  53==0x%04x  63==0x%04x  64==0x%04x  75==0x%04x\n"
+		"80==0x%04x  81==0x%04x  82==0x%04x  83==0x%04x  84==0x%04x\n"
+		"88==0x%04x  93==0x%04x\n",
+		id[49], id[53], id[63], id[64], id[75], id[80],
+		id[81], id[82], id[83], id[84], id[88], id[93]);
+}
+
+/**
+ *	ata_id_xfermask - Compute xfermask from the given IDENTIFY data
+ *	@id: IDENTIFY data to compute xfer mask from
+ *
+ *	Compute the xfermask for this device. This is not as trivial
+ *	as it seems if we must consider early devices correctly.
+ *
+ *	FIXME: pre IDE drive timing (do we care ?).
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Computed xfermask
+ */
+unsigned int ata_id_xfermask(const u16 *id)
+{
+	unsigned int pio_mask, mwdma_mask, udma_mask;
+
+	/* Usual case. Word 53 indicates word 64 is valid */
+	if (id[ATA_ID_FIELD_VALID] & (1 << 1)) {
+		pio_mask = id[ATA_ID_PIO_MODES] & 0x03;
+		pio_mask <<= 3;
+		pio_mask |= 0x7;
+	} else {
+		/* If word 64 isn't valid then Word 51 high byte holds
+		 * the PIO timing number for the maximum. Turn it into
+		 * a mask.
+		 */
+		u8 mode = (id[ATA_ID_OLD_PIO_MODES] >> 8) & 0xFF;
+		if (mode < 5)	/* Valid PIO range */
+			pio_mask = (2 << mode) - 1;
+		else
+			pio_mask = 1;
+
+		/* But wait.. there's more. Design your standards by
+		 * committee and you too can get a free iordy field to
+		 * process. However it is the speeds not the modes that
+		 * are supported... Note drivers using the timing API
+		 * will get this right anyway
+		 */
+	}
+
+	mwdma_mask = id[ATA_ID_MWDMA_MODES] & 0x07;
+
+	if (ata_id_is_cfa(id)) {
+		/*
+		 *	Process compact flash extended modes
+		 */
+		int pio = (id[ATA_ID_CFA_MODES] >> 0) & 0x7;
+		int dma = (id[ATA_ID_CFA_MODES] >> 3) & 0x7;
+
+		if (pio)
+			pio_mask |= (1 << 5);
+		if (pio > 1)
+			pio_mask |= (1 << 6);
+		if (dma)
+			mwdma_mask |= (1 << 3);
+		if (dma > 1)
+			mwdma_mask |= (1 << 4);
+	}
+
+	udma_mask = 0;
+	if (id[ATA_ID_FIELD_VALID] & (1 << 2))
+		udma_mask = id[ATA_ID_UDMA_MODES] & 0xff;
+
+	return ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask);
+}
+EXPORT_SYMBOL_GPL(ata_id_xfermask);
+
+static void ata_qc_complete_internal(struct ata_queued_cmd *qc)
+{
+	struct completion *waiting = qc->private_data;
+
+	complete(waiting);
+}
+
+/**
+ *	ata_exec_internal - execute libata internal command
+ *	@dev: Device to which the command is sent
+ *	@tf: Taskfile registers for the command and the result
+ *	@cdb: CDB for packet command
+ *	@dma_dir: Data transfer direction of the command
+ *	@buf: Data buffer of the command
+ *	@buflen: Length of data buffer
+ *	@timeout: Timeout in msecs (0 for default)
+ *
+ *	Executes libata internal command with timeout. @tf contains
+ *	the command on entry and the result on return. Timeout and error
+ *	conditions are reported via the return value. No recovery action
+ *	is taken after a command times out. It is the caller's duty to
+ *	clean up after timeout.
+ *
+ *	LOCKING:
+ *	None.  Should be called with kernel context, might sleep.
+ *
+ *	RETURNS:
+ *	Zero on success, AC_ERR_* mask on failure
+ */
+unsigned int ata_exec_internal(struct ata_device *dev, struct ata_taskfile *tf,
+			       const u8 *cdb, enum dma_data_direction dma_dir,
+			       void *buf, unsigned int buflen,
+			       unsigned int timeout)
+{
+	struct ata_link *link = dev->link;
+	struct ata_port *ap = link->ap;
+	u8 command = tf->command;
+	struct ata_queued_cmd *qc;
+	struct scatterlist sgl;
+	unsigned int preempted_tag;
+	u32 preempted_sactive;
+	u64 preempted_qc_active;
+	int preempted_nr_active_links;
+	bool auto_timeout = false;
+	DECLARE_COMPLETION_ONSTACK(wait);
+	unsigned long flags;
+	unsigned int err_mask;
+	int rc;
+
+	if (WARN_ON(dma_dir != DMA_NONE && !buf))
+		return AC_ERR_INVALID;
+
+	spin_lock_irqsave(ap->lock, flags);
+
+	/* No internal command while frozen */
+	if (ata_port_is_frozen(ap)) {
+		spin_unlock_irqrestore(ap->lock, flags);
+		return AC_ERR_SYSTEM;
+	}
+
+	/* Initialize internal qc */
+	qc = __ata_qc_from_tag(ap, ATA_TAG_INTERNAL);
+
+	qc->tag = ATA_TAG_INTERNAL;
+	qc->hw_tag = 0;
+	qc->scsicmd = NULL;
+	qc->ap = ap;
+	qc->dev = dev;
+	ata_qc_reinit(qc);
+
+	preempted_tag = link->active_tag;
+	preempted_sactive = link->sactive;
+	preempted_qc_active = ap->qc_active;
+	preempted_nr_active_links = ap->nr_active_links;
+	link->active_tag = ATA_TAG_POISON;
+	link->sactive = 0;
+	ap->qc_active = 0;
+	ap->nr_active_links = 0;
+
+	/* Prepare and issue qc */
+	qc->tf = *tf;
+	if (cdb)
+		memcpy(qc->cdb, cdb, ATAPI_CDB_LEN);
+
+	/* Some SATA bridges need us to indicate data xfer direction */
+	if (tf->protocol == ATAPI_PROT_DMA && (dev->flags & ATA_DFLAG_DMADIR) &&
+	    dma_dir == DMA_FROM_DEVICE)
+		qc->tf.feature |= ATAPI_DMADIR;
+
+	qc->flags |= ATA_QCFLAG_RESULT_TF;
+	qc->dma_dir = dma_dir;
+	if (dma_dir != DMA_NONE) {
+		sg_init_one(&sgl, buf, buflen);
+		ata_sg_init(qc, &sgl, 1);
+		qc->nbytes = buflen;
+	}
+
+	qc->private_data = &wait;
+	qc->complete_fn = ata_qc_complete_internal;
+
+	ata_qc_issue(qc);
+
+	spin_unlock_irqrestore(ap->lock, flags);
+
+	if (!timeout) {
+		if (ata_probe_timeout) {
+			timeout = ata_probe_timeout * 1000;
+		} else {
+			timeout = ata_internal_cmd_timeout(dev, command);
+			auto_timeout = true;
+		}
+	}
+
+	ata_eh_release(ap);
+
+	rc = wait_for_completion_timeout(&wait, msecs_to_jiffies(timeout));
+
+	ata_eh_acquire(ap);
+
+	ata_sff_flush_pio_task(ap);
+
+	if (!rc) {
+		/*
+		 * We are racing with irq here. If we lose, the following test
+		 * prevents us from completing the qc twice. If we win, the port
+		 * is frozen and will be cleaned up by ->post_internal_cmd().
+		 */
+		spin_lock_irqsave(ap->lock, flags);
+		if (qc->flags & ATA_QCFLAG_ACTIVE) {
+			qc->err_mask |= AC_ERR_TIMEOUT;
+			ata_port_freeze(ap);
+			ata_dev_warn(dev, "qc timeout after %u msecs (cmd 0x%x)\n",
+				     timeout, command);
+		}
+		spin_unlock_irqrestore(ap->lock, flags);
+	}
+
+	if (ap->ops->post_internal_cmd)
+		ap->ops->post_internal_cmd(qc);
+
+	/* Perform minimal error analysis */
+	if (qc->flags & ATA_QCFLAG_EH) {
+		if (qc->result_tf.status & (ATA_ERR | ATA_DF))
+			qc->err_mask |= AC_ERR_DEV;
+
+		if (!qc->err_mask)
+			qc->err_mask |= AC_ERR_OTHER;
+
+		if (qc->err_mask & ~AC_ERR_OTHER)
+			qc->err_mask &= ~AC_ERR_OTHER;
+	} else if (qc->tf.command == ATA_CMD_REQ_SENSE_DATA) {
+		qc->result_tf.status |= ATA_SENSE;
+	}
+
+	/* Finish up */
+	spin_lock_irqsave(ap->lock, flags);
+
+	*tf = qc->result_tf;
+	err_mask = qc->err_mask;
+
+	ata_qc_free(qc);
+	link->active_tag = preempted_tag;
+	link->sactive = preempted_sactive;
+	ap->qc_active = preempted_qc_active;
+	ap->nr_active_links = preempted_nr_active_links;
+
+	spin_unlock_irqrestore(ap->lock, flags);
+
+	if ((err_mask & AC_ERR_TIMEOUT) && auto_timeout)
+		ata_internal_cmd_timed_out(dev, command);
+
+	return err_mask;
+}
+
+/**
+ *	ata_pio_need_iordy	-	check if iordy needed
+ *	@adev: ATA device
+ *
+ *	Check if the current speed of the device requires IORDY. Used
+ *	by various controllers for chip configuration.
+ */
+unsigned int ata_pio_need_iordy(const struct ata_device *adev)
+{
+	/* Don't set IORDY if we're preparing for reset.  IORDY may
+	 * lead to controller lock up on certain controllers if the
+	 * port is not occupied.  See bko#11703 for details.
+	 */
+	if (adev->link->ap->pflags & ATA_PFLAG_RESETTING)
+		return 0;
+	/* Controller doesn't support IORDY.  Probably a pointless
+	 * check as the caller should know this.
+	 */
+	if (adev->link->ap->flags & ATA_FLAG_NO_IORDY)
+		return 0;
+	/* CF spec. r4.1 Table 22 says no iordy on PIO5 and PIO6.  */
+	if (ata_id_is_cfa(adev->id)
+	    && (adev->pio_mode == XFER_PIO_5 || adev->pio_mode == XFER_PIO_6))
+		return 0;
+	/* PIO3 and higher it is mandatory */
+	if (adev->pio_mode > XFER_PIO_2)
+		return 1;
+	/* We turn it on when possible */
+	if (ata_id_has_iordy(adev->id))
+		return 1;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ata_pio_need_iordy);
+
+/**
+ *	ata_pio_mask_no_iordy	-	Return the non IORDY mask
+ *	@adev: ATA device
+ *
+ *	Compute the highest mode possible if we are not using iordy. Return
+ *	-1 if no iordy mode is available.
+ */
+static u32 ata_pio_mask_no_iordy(const struct ata_device *adev)
+{
+	/* If we have no drive specific rule, then PIO 2 is non IORDY */
+	if (adev->id[ATA_ID_FIELD_VALID] & 2) {	/* EIDE */
+		u16 pio = adev->id[ATA_ID_EIDE_PIO];
+		/* Is the speed faster than the drive allows non IORDY ? */
+		if (pio) {
+			/* This is cycle times not frequency - watch the logic! */
+			if (pio > 240)	/* PIO2 is 240nS per cycle */
+				return 3 << ATA_SHIFT_PIO;
+			return 7 << ATA_SHIFT_PIO;
+		}
+	}
+	return 3 << ATA_SHIFT_PIO;
+}
+
+/**
+ *	ata_do_dev_read_id		-	default ID read method
+ *	@dev: device
+ *	@tf: proposed taskfile
+ *	@id: data buffer
+ *
+ *	Issue the identify taskfile and hand back the buffer containing
+ *	identify data. For some RAID controllers and for pre ATA devices
+ *	this function is wrapped or replaced by the driver
+ */
+unsigned int ata_do_dev_read_id(struct ata_device *dev,
+				struct ata_taskfile *tf, __le16 *id)
+{
+	return ata_exec_internal(dev, tf, NULL, DMA_FROM_DEVICE,
+				     id, sizeof(id[0]) * ATA_ID_WORDS, 0);
+}
+EXPORT_SYMBOL_GPL(ata_do_dev_read_id);
+
+/**
+ *	ata_dev_read_id - Read ID data from the specified device
+ *	@dev: target device
+ *	@p_class: pointer to class of the target device (may be changed)
+ *	@flags: ATA_READID_* flags
+ *	@id: buffer to read IDENTIFY data into
+ *
+ *	Read ID data from the specified device.  ATA_CMD_ID_ATA is
+ *	performed on ATA devices and ATA_CMD_ID_ATAPI on ATAPI
+ *	devices.  This function also issues ATA_CMD_INIT_DEV_PARAMS
+ *	for pre-ATA4 drives.
+ *
+ *	FIXME: ATA_CMD_ID_ATA is optional for early drives and right
+ *	now we abort if we hit that case.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	0 on success, -errno otherwise.
+ */
+int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
+		    unsigned int flags, u16 *id)
+{
+	struct ata_port *ap = dev->link->ap;
+	unsigned int class = *p_class;
+	struct ata_taskfile tf;
+	unsigned int err_mask = 0;
+	const char *reason;
+	bool is_semb = class == ATA_DEV_SEMB;
+	int may_fallback = 1, tried_spinup = 0;
+	int rc;
+
+retry:
+	ata_tf_init(dev, &tf);
+
+	switch (class) {
+	case ATA_DEV_SEMB:
+		class = ATA_DEV_ATA;	/* some hard drives report SEMB sig */
+		fallthrough;
+	case ATA_DEV_ATA:
+	case ATA_DEV_ZAC:
+		tf.command = ATA_CMD_ID_ATA;
+		break;
+	case ATA_DEV_ATAPI:
+		tf.command = ATA_CMD_ID_ATAPI;
+		break;
+	default:
+		rc = -ENODEV;
+		reason = "unsupported class";
+		goto err_out;
+	}
+
+	tf.protocol = ATA_PROT_PIO;
+
+	/* Some devices choke if TF registers contain garbage.  Make
+	 * sure those are properly initialized.
+	 */
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
+
+	/* Device presence detection is unreliable on some
+	 * controllers.  Always poll IDENTIFY if available.
+	 */
+	tf.flags |= ATA_TFLAG_POLLING;
+
+	if (ap->ops->read_id)
+		err_mask = ap->ops->read_id(dev, &tf, (__le16 *)id);
+	else
+		err_mask = ata_do_dev_read_id(dev, &tf, (__le16 *)id);
+
+	if (err_mask) {
+		if (err_mask & AC_ERR_NODEV_HINT) {
+			ata_dev_dbg(dev, "NODEV after polling detection\n");
+			return -ENOENT;
+		}
+
+		if (is_semb) {
+			ata_dev_info(dev,
+		     "IDENTIFY failed on device w/ SEMB sig, disabled\n");
+			/* SEMB is not supported yet */
+			*p_class = ATA_DEV_SEMB_UNSUP;
+			return 0;
+		}
+
+		if ((err_mask == AC_ERR_DEV) && (tf.error & ATA_ABORTED)) {
+			/* Device or controller might have reported
+			 * the wrong device class.  Give a shot at the
+			 * other IDENTIFY if the current one is
+			 * aborted by the device.
+			 */
+			if (may_fallback) {
+				may_fallback = 0;
+
+				if (class == ATA_DEV_ATA)
+					class = ATA_DEV_ATAPI;
+				else
+					class = ATA_DEV_ATA;
+				goto retry;
+			}
+
+			/* Control reaches here iff the device aborted
+			 * both flavors of IDENTIFYs which happens
+			 * sometimes with phantom devices.
+			 */
+			ata_dev_dbg(dev,
+				    "both IDENTIFYs aborted, assuming NODEV\n");
+			return -ENOENT;
+		}
+
+		rc = -EIO;
+		reason = "I/O error";
+		goto err_out;
+	}
+
+	if (dev->quirks & ATA_QUIRK_DUMP_ID) {
+		ata_dev_info(dev, "dumping IDENTIFY data, "
+			    "class=%d may_fallback=%d tried_spinup=%d\n",
+			    class, may_fallback, tried_spinup);
+		print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
+			       16, 2, id, ATA_ID_WORDS * sizeof(*id), true);
+	}
+
+	/* Falling back doesn't make sense if ID data was read
+	 * successfully at least once.
+	 */
+	may_fallback = 0;
+
+	swap_buf_le16(id, ATA_ID_WORDS);
+
+	/* sanity check */
+	rc = -EINVAL;
+	reason = "device reports invalid type";
+
+	if (class == ATA_DEV_ATA || class == ATA_DEV_ZAC) {
+		if (!ata_id_is_ata(id) && !ata_id_is_cfa(id))
+			goto err_out;
+		if (ap->host->flags & ATA_HOST_IGNORE_ATA &&
+							ata_id_is_ata(id)) {
+			ata_dev_dbg(dev,
+				"host indicates ignore ATA devices, ignored\n");
+			return -ENOENT;
+		}
+	} else {
+		if (ata_id_is_ata(id))
+			goto err_out;
+	}
+
+	if (!tried_spinup && (id[2] == 0x37c8 || id[2] == 0x738c)) {
+		tried_spinup = 1;
+		/*
+		 * Drive powered-up in standby mode, and requires a specific
+		 * SET_FEATURES spin-up subcommand before it will accept
+		 * anything other than the original IDENTIFY command.
+		 */
+		err_mask = ata_dev_set_feature(dev, SETFEATURES_SPINUP, 0);
+		if (err_mask && id[2] != 0x738c) {
+			rc = -EIO;
+			reason = "SPINUP failed";
+			goto err_out;
+		}
+		/*
+		 * If the drive initially returned incomplete IDENTIFY info,
+		 * we now must reissue the IDENTIFY command.
+		 */
+		if (id[2] == 0x37c8)
+			goto retry;
+	}
+
+	if ((flags & ATA_READID_POSTRESET) &&
+	    (class == ATA_DEV_ATA || class == ATA_DEV_ZAC)) {
+		/*
+		 * The exact sequence expected by certain pre-ATA4 drives is:
+		 * SRST RESET
+		 * IDENTIFY (optional in early ATA)
+		 * INITIALIZE DEVICE PARAMETERS (later IDE and ATA)
+		 * anything else..
+		 * Some drives were very specific about that exact sequence.
+		 *
+		 * Note that ATA4 says lba is mandatory so the second check
+		 * should never trigger.
+		 */
+		if (ata_id_major_version(id) < 4 || !ata_id_has_lba(id)) {
+			err_mask = ata_dev_init_params(dev, id[3], id[6]);
+			if (err_mask) {
+				rc = -EIO;
+				reason = "INIT_DEV_PARAMS failed";
+				goto err_out;
+			}
+
+			/* current CHS translation info (id[53-58]) might be
+			 * changed. reread the identify device info.
+			 */
+			flags &= ~ATA_READID_POSTRESET;
+			goto retry;
+		}
+	}
+
+	*p_class = class;
+
+	return 0;
+
+ err_out:
+	ata_dev_warn(dev, "failed to IDENTIFY (%s, err_mask=0x%x)\n",
+		     reason, err_mask);
+	return rc;
+}
+
+bool ata_dev_power_init_tf(struct ata_device *dev, struct ata_taskfile *tf,
+			   bool set_active)
+{
+	/* Only applies to ATA and ZAC devices */
+	if (dev->class != ATA_DEV_ATA && dev->class != ATA_DEV_ZAC)
+		return false;
+
+	ata_tf_init(dev, tf);
+	tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
+	tf->protocol = ATA_PROT_NODATA;
+
+	if (set_active) {
+		/* VERIFY for 1 sector at lba=0 */
+		tf->command = ATA_CMD_VERIFY;
+		tf->nsect = 1;
+		if (dev->flags & ATA_DFLAG_LBA) {
+			tf->flags |= ATA_TFLAG_LBA;
+			tf->device |= ATA_LBA;
+		} else {
+			/* CHS */
+			tf->lbal = 0x1; /* sect */
+		}
+	} else {
+		tf->command = ATA_CMD_STANDBYNOW1;
+	}
+
+	return true;
+}
+
+static bool ata_dev_power_is_active(struct ata_device *dev)
+{
+	struct ata_taskfile tf;
+	unsigned int err_mask;
+
+	ata_tf_init(dev, &tf);
+	tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
+	tf.protocol = ATA_PROT_NODATA;
+	tf.command = ATA_CMD_CHK_POWER;
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+	if (err_mask) {
+		ata_dev_err(dev, "Check power mode failed (err_mask=0x%x)\n",
+			    err_mask);
+		/*
+		 * Assume we are in standby mode so that we always force a
+		 * spinup in ata_dev_power_set_active().
+		 */
+		return false;
+	}
+
+	ata_dev_dbg(dev, "Power mode: 0x%02x\n", tf.nsect);
+
+	/* Active or idle */
+	return tf.nsect == 0xff;
+}
+
+/**
+ *	ata_dev_power_set_standby - Set a device power mode to standby
+ *	@dev: target device
+ *
+ *	Issue a STANDBY IMMEDIATE command to set a device power mode to standby.
+ *	For an HDD device, this spins down the disks.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ */
+void ata_dev_power_set_standby(struct ata_device *dev)
+{
+	unsigned long ap_flags = dev->link->ap->flags;
+	struct ata_taskfile tf;
+	unsigned int err_mask;
+
+	/* If the device is already sleeping or in standby, do nothing. */
+	if ((dev->flags & ATA_DFLAG_SLEEPING) ||
+	    !ata_dev_power_is_active(dev))
+		return;
+
+	/*
+	 * Some odd clown BIOSes issue spindown on power off (ACPI S4 or S5)
+	 * causing some drives to spin up and down again. For these, do nothing
+	 * if we are being called on shutdown.
+	 */
+	if ((ap_flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) &&
+	    system_state == SYSTEM_POWER_OFF)
+		return;
+
+	if ((ap_flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) &&
+	    system_entering_hibernation())
+		return;
+
+	/* Issue STANDBY IMMEDIATE command only if supported by the device */
+	if (!ata_dev_power_init_tf(dev, &tf, false))
+		return;
+
+	ata_dev_notice(dev, "Entering standby power mode\n");
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+	if (err_mask)
+		ata_dev_err(dev, "STANDBY IMMEDIATE failed (err_mask=0x%x)\n",
+			    err_mask);
+}
+
+/**
+ *	ata_dev_power_set_active -  Set a device power mode to active
+ *	@dev: target device
+ *
+ *	Issue a VERIFY command to enter to ensure that the device is in the
+ *	active power mode. For a spun-down HDD (standby or idle power mode),
+ *	the VERIFY command will complete after the disk spins up.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ */
+void ata_dev_power_set_active(struct ata_device *dev)
+{
+	struct ata_taskfile tf;
+	unsigned int err_mask;
+
+	/*
+	 * Issue READ VERIFY SECTORS command for 1 sector at lba=0 only
+	 * if supported by the device.
+	 */
+	if (!ata_dev_power_init_tf(dev, &tf, true))
+		return;
+
+	/*
+	 * Check the device power state & condition and force a spinup with
+	 * VERIFY command only if the drive is not already ACTIVE or IDLE.
+	 */
+	if (ata_dev_power_is_active(dev))
+		return;
+
+	ata_dev_notice(dev, "Entering active power mode\n");
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+	if (err_mask)
+		ata_dev_err(dev, "VERIFY failed (err_mask=0x%x)\n",
+			    err_mask);
+}
+
+/**
+ *	ata_read_log_page - read a specific log page
+ *	@dev: target device
+ *	@log: log to read
+ *	@page: page to read
+ *	@buf: buffer to store read page
+ *	@sectors: number of sectors to read
+ *
+ *	Read log page using READ_LOG_EXT command.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ *
+ *	RETURNS:
+ *	0 on success, AC_ERR_* mask otherwise.
+ */
+unsigned int ata_read_log_page(struct ata_device *dev, u8 log,
+			       u8 page, void *buf, unsigned int sectors)
+{
+	unsigned long ap_flags = dev->link->ap->flags;
+	struct ata_taskfile tf;
+	unsigned int err_mask;
+	bool dma = false;
+
+	ata_dev_dbg(dev, "read log page - log 0x%x, page 0x%x\n", log, page);
+
+	/*
+	 * Return error without actually issuing the command on controllers
+	 * which e.g. lockup on a read log page.
+	 */
+	if (ap_flags & ATA_FLAG_NO_LOG_PAGE)
+		return AC_ERR_DEV;
+
+retry:
+	ata_tf_init(dev, &tf);
+	if (ata_dma_enabled(dev) && ata_id_has_read_log_dma_ext(dev->id) &&
+	    !(dev->quirks & ATA_QUIRK_NO_DMA_LOG)) {
+		tf.command = ATA_CMD_READ_LOG_DMA_EXT;
+		tf.protocol = ATA_PROT_DMA;
+		dma = true;
+	} else {
+		tf.command = ATA_CMD_READ_LOG_EXT;
+		tf.protocol = ATA_PROT_PIO;
+		dma = false;
+	}
+	tf.lbal = log;
+	tf.lbam = page;
+	tf.nsect = sectors;
+	tf.hob_nsect = sectors >> 8;
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_LBA48 | ATA_TFLAG_DEVICE;
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE,
+				     buf, sectors * ATA_SECT_SIZE, 0);
+
+	if (err_mask) {
+		if (dma) {
+			dev->quirks |= ATA_QUIRK_NO_DMA_LOG;
+			if (!ata_port_is_frozen(dev->link->ap))
+				goto retry;
+		}
+		ata_dev_err(dev,
+			    "Read log 0x%02x page 0x%02x failed, Emask 0x%x\n",
+			    (unsigned int)log, (unsigned int)page, err_mask);
+	}
+
+	return err_mask;
+}
+
+static int ata_log_supported(struct ata_device *dev, u8 log)
+{
+	if (dev->quirks & ATA_QUIRK_NO_LOG_DIR)
+		return 0;
+
+	if (ata_read_log_page(dev, ATA_LOG_DIRECTORY, 0, dev->sector_buf, 1))
+		return 0;
+	return get_unaligned_le16(&dev->sector_buf[log * 2]);
+}
+
+static bool ata_identify_page_supported(struct ata_device *dev, u8 page)
+{
+	unsigned int err, i;
+
+	if (dev->quirks & ATA_QUIRK_NO_ID_DEV_LOG)
+		return false;
+
+	if (!ata_log_supported(dev, ATA_LOG_IDENTIFY_DEVICE)) {
+		/*
+		 * IDENTIFY DEVICE data log is defined as mandatory starting
+		 * with ACS-3 (ATA version 10). Warn about the missing log
+		 * for drives which implement this ATA level or above.
+		 */
+		if (ata_id_major_version(dev->id) >= 10)
+			ata_dev_notice(dev,
+				"ATA Identify Device Log not supported\n");
+		dev->quirks |= ATA_QUIRK_NO_ID_DEV_LOG;
+		return false;
+	}
+
+	/*
+	 * Read IDENTIFY DEVICE data log, page 0, to figure out if the page is
+	 * supported.
+	 */
+	err = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE, 0,
+				dev->sector_buf, 1);
+	if (err)
+		return false;
+
+	for (i = 0; i < dev->sector_buf[8]; i++) {
+		if (dev->sector_buf[9 + i] == page)
+			return true;
+	}
+
+	return false;
+}
+
+static int ata_do_link_spd_quirk(struct ata_device *dev)
+{
+	struct ata_link *plink = ata_dev_phys_link(dev);
+	u32 target, target_limit;
+
+	if (!sata_scr_valid(plink))
+		return 0;
+
+	if (dev->quirks & ATA_QUIRK_1_5_GBPS)
+		target = 1;
+	else
+		return 0;
+
+	target_limit = (1 << target) - 1;
+
+	/* if already on stricter limit, no need to push further */
+	if (plink->sata_spd_limit <= target_limit)
+		return 0;
+
+	plink->sata_spd_limit = target_limit;
+
+	/* Request another EH round by returning -EAGAIN if link is
+	 * going faster than the target speed.  Forward progress is
+	 * guaranteed by setting sata_spd_limit to target_limit above.
+	 */
+	if (plink->sata_spd > target) {
+		ata_dev_info(dev, "applying link speed limit quirk to %s\n",
+			     sata_spd_string(target));
+		return -EAGAIN;
+	}
+	return 0;
+}
+
+static inline bool ata_dev_knobble(struct ata_device *dev)
+{
+	struct ata_port *ap = dev->link->ap;
+
+	if (ata_dev_quirks(dev) & ATA_QUIRK_BRIDGE_OK)
+		return false;
+
+	return ((ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(dev->id)));
+}
+
+static void ata_dev_config_ncq_send_recv(struct ata_device *dev)
+{
+	unsigned int err_mask;
+
+	if (!ata_log_supported(dev, ATA_LOG_NCQ_SEND_RECV)) {
+		ata_dev_notice(dev, "NCQ Send/Recv Log not supported\n");
+		return;
+	}
+	err_mask = ata_read_log_page(dev, ATA_LOG_NCQ_SEND_RECV,
+				     0, dev->sector_buf, 1);
+	if (!err_mask) {
+		u8 *cmds = dev->ncq_send_recv_cmds;
+
+		dev->flags |= ATA_DFLAG_NCQ_SEND_RECV;
+		memcpy(cmds, dev->sector_buf, ATA_LOG_NCQ_SEND_RECV_SIZE);
+
+		if (dev->quirks & ATA_QUIRK_NO_NCQ_TRIM) {
+			ata_dev_dbg(dev, "disabling queued TRIM support\n");
+			cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &=
+				~ATA_LOG_NCQ_SEND_RECV_DSM_TRIM;
+		}
+	}
+}
+
+static void ata_dev_config_ncq_non_data(struct ata_device *dev)
+{
+	unsigned int err_mask;
+
+	if (!ata_log_supported(dev, ATA_LOG_NCQ_NON_DATA)) {
+		ata_dev_notice(dev,
+			       "NCQ Send/Recv Log not supported\n");
+		return;
+	}
+	err_mask = ata_read_log_page(dev, ATA_LOG_NCQ_NON_DATA,
+				     0, dev->sector_buf, 1);
+	if (!err_mask)
+		memcpy(dev->ncq_non_data_cmds, dev->sector_buf,
+		       ATA_LOG_NCQ_NON_DATA_SIZE);
+}
+
+static void ata_dev_config_ncq_prio(struct ata_device *dev)
+{
+	unsigned int err_mask;
+
+	if (!ata_identify_page_supported(dev, ATA_LOG_SATA_SETTINGS))
+		return;
+
+	err_mask = ata_read_log_page(dev,
+				     ATA_LOG_IDENTIFY_DEVICE,
+				     ATA_LOG_SATA_SETTINGS,
+				     dev->sector_buf, 1);
+	if (err_mask)
+		goto not_supported;
+
+	if (!(dev->sector_buf[ATA_LOG_NCQ_PRIO_OFFSET] & BIT(3)))
+		goto not_supported;
+
+	dev->flags |= ATA_DFLAG_NCQ_PRIO;
+
+	return;
+
+not_supported:
+	dev->flags &= ~ATA_DFLAG_NCQ_PRIO_ENABLED;
+	dev->flags &= ~ATA_DFLAG_NCQ_PRIO;
+}
+
+static bool ata_dev_check_adapter(struct ata_device *dev,
+				  unsigned short vendor_id)
+{
+	struct pci_dev *pcidev = NULL;
+	struct device *parent_dev = NULL;
+
+	for (parent_dev = dev->tdev.parent; parent_dev != NULL;
+	     parent_dev = parent_dev->parent) {
+		if (dev_is_pci(parent_dev)) {
+			pcidev = to_pci_dev(parent_dev);
+			if (pcidev->vendor == vendor_id)
+				return true;
+			break;
+		}
+	}
+
+	return false;
+}
+
+static int ata_dev_config_ncq(struct ata_device *dev,
+			       char *desc, size_t desc_sz)
+{
+	struct ata_port *ap = dev->link->ap;
+	int hdepth = 0, ddepth = ata_id_queue_depth(dev->id);
+	unsigned int err_mask;
+	char *aa_desc = "";
+
+	if (!ata_id_has_ncq(dev->id)) {
+		desc[0] = '\0';
+		return 0;
+	}
+	if (!IS_ENABLED(CONFIG_SATA_HOST))
+		return 0;
+	if (dev->quirks & ATA_QUIRK_NONCQ) {
+		snprintf(desc, desc_sz, "NCQ (not used)");
+		return 0;
+	}
+
+	if (dev->quirks & ATA_QUIRK_NO_NCQ_ON_ATI &&
+	    ata_dev_check_adapter(dev, PCI_VENDOR_ID_ATI)) {
+		snprintf(desc, desc_sz, "NCQ (not used)");
+		return 0;
+	}
+
+	if (ap->flags & ATA_FLAG_NCQ) {
+		hdepth = min(ap->scsi_host->can_queue, ATA_MAX_QUEUE);
+		dev->flags |= ATA_DFLAG_NCQ;
+	}
+
+	if (!(dev->quirks & ATA_QUIRK_BROKEN_FPDMA_AA) &&
+		(ap->flags & ATA_FLAG_FPDMA_AA) &&
+		ata_id_has_fpdma_aa(dev->id)) {
+		err_mask = ata_dev_set_feature(dev, SETFEATURES_SATA_ENABLE,
+			SATA_FPDMA_AA);
+		if (err_mask) {
+			ata_dev_err(dev,
+				    "failed to enable AA (error_mask=0x%x)\n",
+				    err_mask);
+			if (err_mask != AC_ERR_DEV) {
+				dev->quirks |= ATA_QUIRK_BROKEN_FPDMA_AA;
+				return -EIO;
+			}
+		} else
+			aa_desc = ", AA";
+	}
+
+	if (hdepth >= ddepth)
+		snprintf(desc, desc_sz, "NCQ (depth %d)%s", ddepth, aa_desc);
+	else
+		snprintf(desc, desc_sz, "NCQ (depth %d/%d)%s", hdepth,
+			ddepth, aa_desc);
+
+	if ((ap->flags & ATA_FLAG_FPDMA_AUX)) {
+		if (ata_id_has_ncq_send_and_recv(dev->id))
+			ata_dev_config_ncq_send_recv(dev);
+		if (ata_id_has_ncq_non_data(dev->id))
+			ata_dev_config_ncq_non_data(dev);
+		if (ata_id_has_ncq_prio(dev->id))
+			ata_dev_config_ncq_prio(dev);
+	}
+
+	return 0;
+}
+
+static void ata_dev_config_sense_reporting(struct ata_device *dev)
+{
+	unsigned int err_mask;
+
+	if (!ata_id_has_sense_reporting(dev->id))
+		return;
+
+	if (ata_id_sense_reporting_enabled(dev->id))
+		return;
+
+	err_mask = ata_dev_set_feature(dev, SETFEATURE_SENSE_DATA, 0x1);
+	if (err_mask) {
+		ata_dev_dbg(dev,
+			    "failed to enable Sense Data Reporting, Emask 0x%x\n",
+			    err_mask);
+	}
+}
+
+static void ata_dev_config_zac(struct ata_device *dev)
+{
+	unsigned int err_mask;
+	u8 *identify_buf = dev->sector_buf;
+
+	dev->zac_zones_optimal_open = U32_MAX;
+	dev->zac_zones_optimal_nonseq = U32_MAX;
+	dev->zac_zones_max_open = U32_MAX;
+
+	/*
+	 * Always set the 'ZAC' flag for Host-managed devices.
+	 */
+	if (dev->class == ATA_DEV_ZAC)
+		dev->flags |= ATA_DFLAG_ZAC;
+	else if (ata_id_zoned_cap(dev->id) == 0x01)
+		/*
+		 * Check for host-aware devices.
+		 */
+		dev->flags |= ATA_DFLAG_ZAC;
+
+	if (!(dev->flags & ATA_DFLAG_ZAC))
+		return;
+
+	if (!ata_identify_page_supported(dev, ATA_LOG_ZONED_INFORMATION)) {
+		ata_dev_warn(dev,
+			     "ATA Zoned Information Log not supported\n");
+		return;
+	}
+
+	/*
+	 * Read IDENTIFY DEVICE data log, page 9 (Zoned-device information)
+	 */
+	err_mask = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE,
+				     ATA_LOG_ZONED_INFORMATION,
+				     identify_buf, 1);
+	if (!err_mask) {
+		u64 zoned_cap, opt_open, opt_nonseq, max_open;
+
+		zoned_cap = get_unaligned_le64(&identify_buf[8]);
+		if ((zoned_cap >> 63))
+			dev->zac_zoned_cap = (zoned_cap & 1);
+		opt_open = get_unaligned_le64(&identify_buf[24]);
+		if ((opt_open >> 63))
+			dev->zac_zones_optimal_open = (u32)opt_open;
+		opt_nonseq = get_unaligned_le64(&identify_buf[32]);
+		if ((opt_nonseq >> 63))
+			dev->zac_zones_optimal_nonseq = (u32)opt_nonseq;
+		max_open = get_unaligned_le64(&identify_buf[40]);
+		if ((max_open >> 63))
+			dev->zac_zones_max_open = (u32)max_open;
+	}
+}
+
+static void ata_dev_config_trusted(struct ata_device *dev)
+{
+	u64 trusted_cap;
+	unsigned int err;
+
+	if (!ata_id_has_trusted(dev->id))
+		return;
+
+	if (!ata_identify_page_supported(dev, ATA_LOG_SECURITY)) {
+		ata_dev_warn(dev,
+			     "Security Log not supported\n");
+		return;
+	}
+
+	err = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE, ATA_LOG_SECURITY,
+				dev->sector_buf, 1);
+	if (err)
+		return;
+
+	trusted_cap = get_unaligned_le64(&dev->sector_buf[40]);
+	if (!(trusted_cap & (1ULL << 63))) {
+		ata_dev_dbg(dev,
+			    "Trusted Computing capability qword not valid!\n");
+		return;
+	}
+
+	if (trusted_cap & (1 << 0))
+		dev->flags |= ATA_DFLAG_TRUSTED;
+}
+
+void ata_dev_cleanup_cdl_resources(struct ata_device *dev)
+{
+	kfree(dev->cdl);
+	dev->cdl = NULL;
+}
+
+static int ata_dev_init_cdl_resources(struct ata_device *dev)
+{
+	struct ata_cdl *cdl = dev->cdl;
+	unsigned int err_mask;
+
+	if (!cdl) {
+		cdl = kzalloc(sizeof(*cdl), GFP_KERNEL);
+		if (!cdl)
+			return -ENOMEM;
+		dev->cdl = cdl;
+	}
+
+	err_mask = ata_read_log_page(dev, ATA_LOG_CDL, 0, cdl->desc_log_buf,
+				     ATA_LOG_CDL_SIZE / ATA_SECT_SIZE);
+	if (err_mask) {
+		ata_dev_warn(dev, "Read Command Duration Limits log failed\n");
+		ata_dev_cleanup_cdl_resources(dev);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void ata_dev_config_cdl(struct ata_device *dev)
+{
+	unsigned int err_mask;
+	bool cdl_enabled;
+	u64 val;
+	int ret;
+
+	if (ata_id_major_version(dev->id) < 11)
+		goto not_supported;
+
+	if (!ata_log_supported(dev, ATA_LOG_IDENTIFY_DEVICE) ||
+	    !ata_identify_page_supported(dev, ATA_LOG_SUPPORTED_CAPABILITIES) ||
+	    !ata_identify_page_supported(dev, ATA_LOG_CURRENT_SETTINGS))
+		goto not_supported;
+
+	err_mask = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE,
+				     ATA_LOG_SUPPORTED_CAPABILITIES,
+				     dev->sector_buf, 1);
+	if (err_mask)
+		goto not_supported;
+
+	/* Check Command Duration Limit Supported bits */
+	val = get_unaligned_le64(&dev->sector_buf[168]);
+	if (!(val & BIT_ULL(63)) || !(val & BIT_ULL(0)))
+		goto not_supported;
+
+	/* Warn the user if command duration guideline is not supported */
+	if (!(val & BIT_ULL(1)))
+		ata_dev_warn(dev,
+			"Command duration guideline is not supported\n");
+
+	/*
+	 * We must have support for the sense data for successful NCQ commands
+	 * log indicated by the successful NCQ command sense data supported bit.
+	 */
+	val = get_unaligned_le64(&dev->sector_buf[8]);
+	if (!(val & BIT_ULL(63)) || !(val & BIT_ULL(47))) {
+		ata_dev_warn(dev,
+			"CDL supported but Successful NCQ Command Sense Data is not supported\n");
+		goto not_supported;
+	}
+
+	/* Without NCQ autosense, the successful NCQ commands log is useless. */
+	if (!ata_id_has_ncq_autosense(dev->id)) {
+		ata_dev_warn(dev,
+			"CDL supported but NCQ autosense is not supported\n");
+		goto not_supported;
+	}
+
+	/*
+	 * If CDL is marked as enabled, make sure the feature is enabled too.
+	 * Conversely, if CDL is disabled, make sure the feature is turned off.
+	 */
+	err_mask = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE,
+				     ATA_LOG_CURRENT_SETTINGS,
+				     dev->sector_buf, 1);
+	if (err_mask)
+		goto not_supported;
+
+	val = get_unaligned_le64(&dev->sector_buf[8]);
+	cdl_enabled = val & BIT_ULL(63) && val & BIT_ULL(21);
+	if (dev->flags & ATA_DFLAG_CDL_ENABLED) {
+		if (!cdl_enabled) {
+			/* Enable CDL on the device */
+			err_mask = ata_dev_set_feature(dev, SETFEATURES_CDL, 1);
+			if (err_mask) {
+				ata_dev_err(dev,
+					    "Enable CDL feature failed\n");
+				goto not_supported;
+			}
+		}
+	} else {
+		if (cdl_enabled) {
+			/* Disable CDL on the device */
+			err_mask = ata_dev_set_feature(dev, SETFEATURES_CDL, 0);
+			if (err_mask) {
+				ata_dev_err(dev,
+					    "Disable CDL feature failed\n");
+				goto not_supported;
+			}
+		}
+	}
+
+	/*
+	 * While CDL itself has to be enabled using sysfs, CDL requires that
+	 * sense data for successful NCQ commands is enabled to work properly.
+	 * Just like ata_dev_config_sense_reporting(), enable it unconditionally
+	 * if supported.
+	 */
+	if (!(val & BIT_ULL(63)) || !(val & BIT_ULL(18))) {
+		err_mask = ata_dev_set_feature(dev,
+					SETFEATURE_SENSE_DATA_SUCC_NCQ, 0x1);
+		if (err_mask) {
+			ata_dev_warn(dev,
+				     "failed to enable Sense Data for successful NCQ commands, Emask 0x%x\n",
+				     err_mask);
+			goto not_supported;
+		}
+	}
+
+	/* CDL is supported: allocate and initialize needed resources. */
+	ret = ata_dev_init_cdl_resources(dev);
+	if (ret) {
+		ata_dev_warn(dev, "Initialize CDL resources failed\n");
+		goto not_supported;
+	}
+
+	dev->flags |= ATA_DFLAG_CDL;
+
+	return;
+
+not_supported:
+	dev->flags &= ~(ATA_DFLAG_CDL | ATA_DFLAG_CDL_ENABLED);
+	ata_dev_cleanup_cdl_resources(dev);
+}
+
+static int ata_dev_config_lba(struct ata_device *dev)
+{
+	const u16 *id = dev->id;
+	const char *lba_desc;
+	char ncq_desc[32];
+	int ret;
+
+	dev->flags |= ATA_DFLAG_LBA;
+
+	if (ata_id_has_lba48(id)) {
+		lba_desc = "LBA48";
+		dev->flags |= ATA_DFLAG_LBA48;
+		if (dev->n_sectors >= (1UL << 28) &&
+		    ata_id_has_flush_ext(id))
+			dev->flags |= ATA_DFLAG_FLUSH_EXT;
+	} else {
+		lba_desc = "LBA";
+	}
+
+	/* config NCQ */
+	ret = ata_dev_config_ncq(dev, ncq_desc, sizeof(ncq_desc));
+
+	/* print device info to dmesg */
+	if (ata_dev_print_info(dev))
+		ata_dev_info(dev,
+			     "%llu sectors, multi %u: %s %s\n",
+			     (unsigned long long)dev->n_sectors,
+			     dev->multi_count, lba_desc, ncq_desc);
+
+	return ret;
+}
+
+static void ata_dev_config_chs(struct ata_device *dev)
+{
+	const u16 *id = dev->id;
+
+	if (ata_id_current_chs_valid(id)) {
+		/* Current CHS translation is valid. */
+		dev->cylinders = id[54];
+		dev->heads     = id[55];
+		dev->sectors   = id[56];
+	} else {
+		/* Default translation */
+		dev->cylinders	= id[1];
+		dev->heads	= id[3];
+		dev->sectors	= id[6];
+	}
+
+	/* print device info to dmesg */
+	if (ata_dev_print_info(dev))
+		ata_dev_info(dev,
+			     "%llu sectors, multi %u, CHS %u/%u/%u\n",
+			     (unsigned long long)dev->n_sectors,
+			     dev->multi_count, dev->cylinders,
+			     dev->heads, dev->sectors);
+}
+
+static void ata_dev_config_fua(struct ata_device *dev)
+{
+	/* Ignore FUA support if its use is disabled globally */
+	if (!libata_fua)
+		goto nofua;
+
+	/* Ignore devices without support for WRITE DMA FUA EXT */
+	if (!(dev->flags & ATA_DFLAG_LBA48) || !ata_id_has_fua(dev->id))
+		goto nofua;
+
+	/* Ignore known bad devices and devices that lack NCQ support */
+	if (!ata_ncq_supported(dev) || (dev->quirks & ATA_QUIRK_NO_FUA))
+		goto nofua;
+
+	dev->flags |= ATA_DFLAG_FUA;
+
+	return;
+
+nofua:
+	dev->flags &= ~ATA_DFLAG_FUA;
+}
+
+static void ata_dev_config_devslp(struct ata_device *dev)
+{
+	u8 *sata_setting = dev->sector_buf;
+	unsigned int err_mask;
+	int i, j;
+
+	/*
+	 * Check device sleep capability. Get DevSlp timing variables
+	 * from SATA Settings page of Identify Device Data Log.
+	 */
+	if (!ata_id_has_devslp(dev->id) ||
+	    !ata_identify_page_supported(dev, ATA_LOG_SATA_SETTINGS))
+		return;
+
+	err_mask = ata_read_log_page(dev,
+				     ATA_LOG_IDENTIFY_DEVICE,
+				     ATA_LOG_SATA_SETTINGS,
+				     sata_setting, 1);
+	if (err_mask)
+		return;
+
+	dev->flags |= ATA_DFLAG_DEVSLP;
+	for (i = 0; i < ATA_LOG_DEVSLP_SIZE; i++) {
+		j = ATA_LOG_DEVSLP_OFFSET + i;
+		dev->devslp_timing[i] = sata_setting[j];
+	}
+}
+
+static void ata_dev_config_cpr(struct ata_device *dev)
+{
+	unsigned int err_mask;
+	size_t buf_len;
+	int i, nr_cpr = 0;
+	struct ata_cpr_log *cpr_log = NULL;
+	u8 *desc, *buf = NULL;
+
+	if (ata_id_major_version(dev->id) < 11)
+		goto out;
+
+	buf_len = ata_log_supported(dev, ATA_LOG_CONCURRENT_POSITIONING_RANGES);
+	if (buf_len == 0)
+		goto out;
+
+	/*
+	 * Read the concurrent positioning ranges log (0x47). We can have at
+	 * most 255 32B range descriptors plus a 64B header. This log varies in
+	 * size, so use the size reported in the GPL directory. Reading beyond
+	 * the supported length will result in an error.
+	 */
+	buf_len <<= 9;
+	buf = kzalloc(buf_len, GFP_KERNEL);
+	if (!buf)
+		goto out;
+
+	err_mask = ata_read_log_page(dev, ATA_LOG_CONCURRENT_POSITIONING_RANGES,
+				     0, buf, buf_len >> 9);
+	if (err_mask)
+		goto out;
+
+	nr_cpr = buf[0];
+	if (!nr_cpr)
+		goto out;
+
+	cpr_log = kzalloc(struct_size(cpr_log, cpr, nr_cpr), GFP_KERNEL);
+	if (!cpr_log)
+		goto out;
+
+	cpr_log->nr_cpr = nr_cpr;
+	desc = &buf[64];
+	for (i = 0; i < nr_cpr; i++, desc += 32) {
+		cpr_log->cpr[i].num = desc[0];
+		cpr_log->cpr[i].num_storage_elements = desc[1];
+		cpr_log->cpr[i].start_lba = get_unaligned_le64(&desc[8]);
+		cpr_log->cpr[i].num_lbas = get_unaligned_le64(&desc[16]);
+	}
+
+out:
+	swap(dev->cpr_log, cpr_log);
+	kfree(cpr_log);
+	kfree(buf);
+}
+
+static void ata_dev_print_features(struct ata_device *dev)
+{
+	if (!(dev->flags & ATA_DFLAG_FEATURES_MASK))
+		return;
+
+	ata_dev_info(dev,
+		     "Features:%s%s%s%s%s%s%s%s\n",
+		     dev->flags & ATA_DFLAG_FUA ? " FUA" : "",
+		     dev->flags & ATA_DFLAG_TRUSTED ? " Trust" : "",
+		     dev->flags & ATA_DFLAG_DA ? " Dev-Attention" : "",
+		     dev->flags & ATA_DFLAG_DEVSLP ? " Dev-Sleep" : "",
+		     dev->flags & ATA_DFLAG_NCQ_SEND_RECV ? " NCQ-sndrcv" : "",
+		     dev->flags & ATA_DFLAG_NCQ_PRIO ? " NCQ-prio" : "",
+		     dev->flags & ATA_DFLAG_CDL ? " CDL" : "",
+		     dev->cpr_log ? " CPR" : "");
+}
+
+/**
+ *	ata_dev_configure - Configure the specified ATA/ATAPI device
+ *	@dev: Target device to configure
+ *
+ *	Configure @dev according to @dev->id.  Generic and low-level
+ *	driver specific fixups are also applied.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	0 on success, -errno otherwise
+ */
+int ata_dev_configure(struct ata_device *dev)
+{
+	struct ata_port *ap = dev->link->ap;
+	bool print_info = ata_dev_print_info(dev);
+	const u16 *id = dev->id;
+	unsigned int xfer_mask;
+	unsigned int err_mask;
+	char revbuf[7];		/* XYZ-99\0 */
+	char fwrevbuf[ATA_ID_FW_REV_LEN+1];
+	char modelbuf[ATA_ID_PROD_LEN+1];
+	int rc;
+
+	if (!ata_dev_enabled(dev)) {
+		ata_dev_dbg(dev, "no device\n");
+		return 0;
+	}
+
+	/* Set quirks */
+	dev->quirks |= ata_dev_quirks(dev);
+	ata_force_quirks(dev);
+
+	if (dev->quirks & ATA_QUIRK_DISABLE) {
+		ata_dev_info(dev, "unsupported device, disabling\n");
+		ata_dev_disable(dev);
+		return 0;
+	}
+
+	if ((!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) &&
+	    dev->class == ATA_DEV_ATAPI) {
+		ata_dev_warn(dev, "WARNING: ATAPI is %s, device ignored\n",
+			     atapi_enabled ? "not supported with this driver"
+			     : "disabled");
+		ata_dev_disable(dev);
+		return 0;
+	}
+
+	rc = ata_do_link_spd_quirk(dev);
+	if (rc)
+		return rc;
+
+	/* some WD SATA-1 drives have issues with LPM, turn on NOLPM for them */
+	if ((dev->quirks & ATA_QUIRK_WD_BROKEN_LPM) &&
+	    (id[ATA_ID_SATA_CAPABILITY] & 0xe) == 0x2)
+		dev->quirks |= ATA_QUIRK_NOLPM;
+
+	if (ap->flags & ATA_FLAG_NO_LPM)
+		dev->quirks |= ATA_QUIRK_NOLPM;
+
+	if (dev->quirks & ATA_QUIRK_NOLPM) {
+		ata_dev_warn(dev, "LPM support broken, forcing max_power\n");
+		dev->link->ap->target_lpm_policy = ATA_LPM_MAX_POWER;
+	}
+
+	/* let ACPI work its magic */
+	rc = ata_acpi_on_devcfg(dev);
+	if (rc)
+		return rc;
+
+	/* massage HPA, do it early as it might change IDENTIFY data */
+	rc = ata_hpa_resize(dev);
+	if (rc)
+		return rc;
+
+	/* print device capabilities */
+	ata_dev_dbg(dev,
+		    "%s: cfg 49:%04x 82:%04x 83:%04x 84:%04x "
+		    "85:%04x 86:%04x 87:%04x 88:%04x\n",
+		    __func__,
+		    id[49], id[82], id[83], id[84],
+		    id[85], id[86], id[87], id[88]);
+
+	/* initialize to-be-configured parameters */
+	dev->flags &= ~ATA_DFLAG_CFG_MASK;
+	dev->max_sectors = 0;
+	dev->cdb_len = 0;
+	dev->n_sectors = 0;
+	dev->cylinders = 0;
+	dev->heads = 0;
+	dev->sectors = 0;
+	dev->multi_count = 0;
+
+	/*
+	 * common ATA, ATAPI feature tests
+	 */
+
+	/* find max transfer mode; for printk only */
+	xfer_mask = ata_id_xfermask(id);
+
+	ata_dump_id(dev, id);
+
+	/* SCSI only uses 4-char revisions, dump full 8 chars from ATA */
+	ata_id_c_string(dev->id, fwrevbuf, ATA_ID_FW_REV,
+			sizeof(fwrevbuf));
+
+	ata_id_c_string(dev->id, modelbuf, ATA_ID_PROD,
+			sizeof(modelbuf));
+
+	/* ATA-specific feature tests */
+	if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) {
+		if (ata_id_is_cfa(id)) {
+			/* CPRM may make this media unusable */
+			if (id[ATA_ID_CFA_KEY_MGMT] & 1)
+				ata_dev_notice(dev,
+	"supports DRM functions and may not be fully accessible\n");
+			snprintf(revbuf, 7, "CFA");
+		} else {
+			snprintf(revbuf, 7, "ATA-%d", ata_id_major_version(id));
+			/* Warn the user if the device has TPM extensions */
+			if (ata_id_has_tpm(id))
+				ata_dev_notice(dev,
+	"supports DRM functions and may not be fully accessible\n");
+		}
+
+		dev->n_sectors = ata_id_n_sectors(id);
+
+		/* get current R/W Multiple count setting */
+		if ((dev->id[47] >> 8) == 0x80 && (dev->id[59] & 0x100)) {
+			unsigned int max = dev->id[47] & 0xff;
+			unsigned int cnt = dev->id[59] & 0xff;
+			/* only recognize/allow powers of two here */
+			if (is_power_of_2(max) && is_power_of_2(cnt))
+				if (cnt <= max)
+					dev->multi_count = cnt;
+		}
+
+		/* print device info to dmesg */
+		if (print_info)
+			ata_dev_info(dev, "%s: %s, %s, max %s\n",
+				     revbuf, modelbuf, fwrevbuf,
+				     ata_mode_string(xfer_mask));
+
+		if (ata_id_has_lba(id)) {
+			rc = ata_dev_config_lba(dev);
+			if (rc)
+				return rc;
+		} else {
+			ata_dev_config_chs(dev);
+		}
+
+		ata_dev_config_fua(dev);
+		ata_dev_config_devslp(dev);
+		ata_dev_config_sense_reporting(dev);
+		ata_dev_config_zac(dev);
+		ata_dev_config_trusted(dev);
+		ata_dev_config_cpr(dev);
+		ata_dev_config_cdl(dev);
+		dev->cdb_len = 32;
+
+		if (print_info)
+			ata_dev_print_features(dev);
+	}
+
+	/* ATAPI-specific feature tests */
+	else if (dev->class == ATA_DEV_ATAPI) {
+		const char *cdb_intr_string = "";
+		const char *atapi_an_string = "";
+		const char *dma_dir_string = "";
+		u32 sntf;
+
+		rc = atapi_cdb_len(id);
+		if ((rc < 12) || (rc > ATAPI_CDB_LEN)) {
+			ata_dev_warn(dev, "unsupported CDB len %d\n", rc);
+			rc = -EINVAL;
+			goto err_out_nosup;
+		}
+		dev->cdb_len = (unsigned int) rc;
+
+		/* Enable ATAPI AN if both the host and device have
+		 * the support.  If PMP is attached, SNTF is required
+		 * to enable ATAPI AN to discern between PHY status
+		 * changed notifications and ATAPI ANs.
+		 */
+		if (atapi_an &&
+		    (ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) &&
+		    (!sata_pmp_attached(ap) ||
+		     sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) {
+			/* issue SET feature command to turn this on */
+			err_mask = ata_dev_set_feature(dev,
+					SETFEATURES_SATA_ENABLE, SATA_AN);
+			if (err_mask)
+				ata_dev_err(dev,
+					    "failed to enable ATAPI AN (err_mask=0x%x)\n",
+					    err_mask);
+			else {
+				dev->flags |= ATA_DFLAG_AN;
+				atapi_an_string = ", ATAPI AN";
+			}
+		}
+
+		if (ata_id_cdb_intr(dev->id)) {
+			dev->flags |= ATA_DFLAG_CDB_INTR;
+			cdb_intr_string = ", CDB intr";
+		}
+
+		if (atapi_dmadir || (dev->quirks & ATA_QUIRK_ATAPI_DMADIR) ||
+		    atapi_id_dmadir(dev->id)) {
+			dev->flags |= ATA_DFLAG_DMADIR;
+			dma_dir_string = ", DMADIR";
+		}
+
+		if (ata_id_has_da(dev->id)) {
+			dev->flags |= ATA_DFLAG_DA;
+			zpodd_init(dev);
+		}
+
+		/* print device info to dmesg */
+		if (print_info)
+			ata_dev_info(dev,
+				     "ATAPI: %s, %s, max %s%s%s%s\n",
+				     modelbuf, fwrevbuf,
+				     ata_mode_string(xfer_mask),
+				     cdb_intr_string, atapi_an_string,
+				     dma_dir_string);
+	}
+
+	/* determine max_sectors */
+	dev->max_sectors = ATA_MAX_SECTORS;
+	if (dev->flags & ATA_DFLAG_LBA48)
+		dev->max_sectors = ATA_MAX_SECTORS_LBA48;
+
+	/* Limit PATA drive on SATA cable bridge transfers to udma5,
+	   200 sectors */
+	if (ata_dev_knobble(dev)) {
+		if (print_info)
+			ata_dev_info(dev, "applying bridge limits\n");
+		dev->udma_mask &= ATA_UDMA5;
+		dev->max_sectors = ATA_MAX_SECTORS;
+	}
+
+	if ((dev->class == ATA_DEV_ATAPI) &&
+	    (atapi_command_packet_set(id) == TYPE_TAPE)) {
+		dev->max_sectors = ATA_MAX_SECTORS_TAPE;
+		dev->quirks |= ATA_QUIRK_STUCK_ERR;
+	}
+
+	if (dev->quirks & ATA_QUIRK_MAX_SEC_128)
+		dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128,
+					 dev->max_sectors);
+
+	if (dev->quirks & ATA_QUIRK_MAX_SEC_1024)
+		dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_1024,
+					 dev->max_sectors);
+
+	if (dev->quirks & ATA_QUIRK_MAX_SEC_LBA48)
+		dev->max_sectors = ATA_MAX_SECTORS_LBA48;
+
+	if (ap->ops->dev_config)
+		ap->ops->dev_config(dev);
+
+	if (dev->quirks & ATA_QUIRK_DIAGNOSTIC) {
+		/* Let the user know. We don't want to disallow opens for
+		   rescue purposes, or in case the vendor is just a blithering
+		   idiot. Do this after the dev_config call as some controllers
+		   with buggy firmware may want to avoid reporting false device
+		   bugs */
+
+		if (print_info) {
+			ata_dev_warn(dev,
+"Drive reports diagnostics failure. This may indicate a drive\n");
+			ata_dev_warn(dev,
+"fault or invalid emulation. Contact drive vendor for information.\n");
+		}
+	}
+
+<<<<<<<
+	if ((dev->horkage & ATA_HORKAGE_FIRMWARE_WARN) && print_info) {
+		ata_dev_notice(dev, "WARNING: device requires firmware update to be fully functional\n");
+		ata_dev_notice(dev, "         contact the vendor or visit http://ata.wiki.kernel.org\n");
+=======
+	if ((dev->quirks & ATA_QUIRK_FIRMWARE_WARN) && print_info) {
+		ata_dev_warn(dev, "WARNING: device requires firmware update to be fully functional\n");
+		ata_dev_warn(dev, "         contact the vendor or visit http://ata.wiki.kernel.org\n");
+>>>>>>>
+	}
+
+	return 0;
+
+err_out_nosup:
+	return rc;
+}
+
+/**
+ *	ata_cable_40wire	-	return 40 wire cable type
+ *	@ap: port
+ *
+ *	Helper method for drivers which want to hardwire 40 wire cable
+ *	detection.
+ */
+
+int ata_cable_40wire(struct ata_port *ap)
+{
+	return ATA_CBL_PATA40;
+}
+EXPORT_SYMBOL_GPL(ata_cable_40wire);
+
+/**
+ *	ata_cable_80wire	-	return 80 wire cable type
+ *	@ap: port
+ *
+ *	Helper method for drivers which want to hardwire 80 wire cable
+ *	detection.
+ */
+
+int ata_cable_80wire(struct ata_port *ap)
+{
+	return ATA_CBL_PATA80;
+}
+EXPORT_SYMBOL_GPL(ata_cable_80wire);
+
+/**
+ *	ata_cable_unknown	-	return unknown PATA cable.
+ *	@ap: port
+ *
+ *	Helper method for drivers which have no PATA cable detection.
+ */
+
+int ata_cable_unknown(struct ata_port *ap)
+{
+	return ATA_CBL_PATA_UNK;
+}
+EXPORT_SYMBOL_GPL(ata_cable_unknown);
+
+/**
+ *	ata_cable_ignore	-	return ignored PATA cable.
+ *	@ap: port
+ *
+ *	Helper method for drivers which don't use cable type to limit
+ *	transfer mode.
+ */
+int ata_cable_ignore(struct ata_port *ap)
+{
+	return ATA_CBL_PATA_IGN;
+}
+EXPORT_SYMBOL_GPL(ata_cable_ignore);
+
+/**
+ *	ata_cable_sata	-	return SATA cable type
+ *	@ap: port
+ *
+ *	Helper method for drivers which have SATA cables
+ */
+
+int ata_cable_sata(struct ata_port *ap)
+{
+	return ATA_CBL_SATA;
+}
+EXPORT_SYMBOL_GPL(ata_cable_sata);
+
+/**
+ *	sata_print_link_status - Print SATA link status
+ *	@link: SATA link to printk link status about
+ *
+ *	This function prints link speed and status of a SATA link.
+ *
+ *	LOCKING:
+ *	None.
+ */
+static void sata_print_link_status(struct ata_link *link)
+{
+	u32 sstatus, scontrol, tmp;
+
+	if (sata_scr_read(link, SCR_STATUS, &sstatus))
+		return;
+	if (sata_scr_read(link, SCR_CONTROL, &scontrol))
+		return;
+
+	if (ata_phys_link_online(link)) {
+		tmp = (sstatus >> 4) & 0xf;
+		ata_link_info(link, "SATA link up %s (SStatus %X SControl %X)\n",
+			      sata_spd_string(tmp), sstatus, scontrol);
+	} else {
+		ata_link_info(link, "SATA link down (SStatus %X SControl %X)\n",
+			      sstatus, scontrol);
+	}
+}
+
+/**
+ *	ata_dev_pair		-	return other device on cable
+ *	@adev: device
+ *
+ *	Obtain the other device on the same cable, or if none is
+ *	present NULL is returned
+ */
+
+struct ata_device *ata_dev_pair(struct ata_device *adev)
+{
+	struct ata_link *link = adev->link;
+	struct ata_device *pair = &link->device[1 - adev->devno];
+	if (!ata_dev_enabled(pair))
+		return NULL;
+	return pair;
+}
+EXPORT_SYMBOL_GPL(ata_dev_pair);
+
+#ifdef CONFIG_ATA_ACPI
+/**
+ *	ata_timing_cycle2mode - find xfer mode for the specified cycle duration
+ *	@xfer_shift: ATA_SHIFT_* value for transfer type to examine.
+ *	@cycle: cycle duration in ns
+ *
+ *	Return matching xfer mode for @cycle.  The returned mode is of
+ *	the transfer type specified by @xfer_shift.  If @cycle is too
+ *	slow for @xfer_shift, 0xff is returned.  If @cycle is faster
+ *	than the fastest known mode, the fasted mode is returned.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	Matching xfer_mode, 0xff if no match found.
+ */
+u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle)
+{
+	u8 base_mode = 0xff, last_mode = 0xff;
+	const struct ata_xfer_ent *ent;
+	const struct ata_timing *t;
+
+	for (ent = ata_xfer_tbl; ent->shift >= 0; ent++)
+		if (ent->shift == xfer_shift)
+			base_mode = ent->base;
+
+	for (t = ata_timing_find_mode(base_mode);
+	     t && ata_xfer_mode2shift(t->mode) == xfer_shift; t++) {
+		unsigned short this_cycle;
+
+		switch (xfer_shift) {
+		case ATA_SHIFT_PIO:
+		case ATA_SHIFT_MWDMA:
+			this_cycle = t->cycle;
+			break;
+		case ATA_SHIFT_UDMA:
+			this_cycle = t->udma;
+			break;
+		default:
+			return 0xff;
+		}
+
+		if (cycle > this_cycle)
+			break;
+
+		last_mode = t->mode;
+	}
+
+	return last_mode;
+}
+#endif
+
+/**
+ *	ata_down_xfermask_limit - adjust dev xfer masks downward
+ *	@dev: Device to adjust xfer masks
+ *	@sel: ATA_DNXFER_* selector
+ *
+ *	Adjust xfer masks of @dev downward.  Note that this function
+ *	does not apply the change.  Invoking ata_set_mode() afterwards
+ *	will apply the limit.
+ *
+ *	LOCKING:
+ *	Inherited from caller.
+ *
+ *	RETURNS:
+ *	0 on success, negative errno on failure
+ */
+int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel)
+{
+	char buf[32];
+	unsigned int orig_mask, xfer_mask;
+	unsigned int pio_mask, mwdma_mask, udma_mask;
+	int quiet, highbit;
+
+	quiet = !!(sel & ATA_DNXFER_QUIET);
+	sel &= ~ATA_DNXFER_QUIET;
+
+	xfer_mask = orig_mask = ata_pack_xfermask(dev->pio_mask,
+						  dev->mwdma_mask,
+						  dev->udma_mask);
+	ata_unpack_xfermask(xfer_mask, &pio_mask, &mwdma_mask, &udma_mask);
+
+	switch (sel) {
+	case ATA_DNXFER_PIO:
+		highbit = fls(pio_mask) - 1;
+		pio_mask &= ~(1 << highbit);
+		break;
+
+	case ATA_DNXFER_DMA:
+		if (udma_mask) {
+			highbit = fls(udma_mask) - 1;
+			udma_mask &= ~(1 << highbit);
+			if (!udma_mask)
+				return -ENOENT;
+		} else if (mwdma_mask) {
+			highbit = fls(mwdma_mask) - 1;
+			mwdma_mask &= ~(1 << highbit);
+			if (!mwdma_mask)
+				return -ENOENT;
+		}
+		break;
+
+	case ATA_DNXFER_40C:
+		udma_mask &= ATA_UDMA_MASK_40C;
+		break;
+
+	case ATA_DNXFER_FORCE_PIO0:
+		pio_mask &= 1;
+		fallthrough;
+	case ATA_DNXFER_FORCE_PIO:
+		mwdma_mask = 0;
+		udma_mask = 0;
+		break;
+
+	default:
+		BUG();
+	}
+
+	xfer_mask &= ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask);
+
+	if (!(xfer_mask & ATA_MASK_PIO) || xfer_mask == orig_mask)
+		return -ENOENT;
+
+	if (!quiet) {
+		if (xfer_mask & (ATA_MASK_MWDMA | ATA_MASK_UDMA))
+			snprintf(buf, sizeof(buf), "%s:%s",
+				 ata_mode_string(xfer_mask),
+				 ata_mode_string(xfer_mask & ATA_MASK_PIO));
+		else
+			snprintf(buf, sizeof(buf), "%s",
+				 ata_mode_string(xfer_mask));
+
+		ata_dev_warn(dev, "limiting speed to %s\n", buf);
+	}
+
+	ata_unpack_xfermask(xfer_mask, &dev->pio_mask, &dev->mwdma_mask,
+			    &dev->udma_mask);
+
+	return 0;
+}
+
+static int ata_dev_set_mode(struct ata_device *dev)
+{
+	struct ata_port *ap = dev->link->ap;
+	struct ata_eh_context *ehc = &dev->link->eh_context;
+	const bool nosetxfer = dev->quirks & ATA_QUIRK_NOSETXFER;
+	const char *dev_err_whine = "";
+	int ign_dev_err = 0;
+	unsigned int err_mask = 0;
+	int rc;
+
+	dev->flags &= ~ATA_DFLAG_PIO;
+	if (dev->xfer_shift == ATA_SHIFT_PIO)
+		dev->flags |= ATA_DFLAG_PIO;
+
+	if (nosetxfer && ap->flags & ATA_FLAG_SATA && ata_id_is_sata(dev->id))
+		dev_err_whine = " (SET_XFERMODE skipped)";
+	else {
+		if (nosetxfer)
+			ata_dev_warn(dev,
+				     "NOSETXFER but PATA detected - can't "
+				     "skip SETXFER, might malfunction\n");
+		err_mask = ata_dev_set_xfermode(dev);
+	}
+
+	if (err_mask & ~AC_ERR_DEV)
+		goto fail;
+
+	/* revalidate */
+	ehc->i.flags |= ATA_EHI_POST_SETMODE;
+	rc = ata_dev_revalidate(dev, ATA_DEV_UNKNOWN, 0);
+	ehc->i.flags &= ~ATA_EHI_POST_SETMODE;
+	if (rc)
+		return rc;
+
+	if (dev->xfer_shift == ATA_SHIFT_PIO) {
+		/* Old CFA may refuse this command, which is just fine */
+		if (ata_id_is_cfa(dev->id))
+			ign_dev_err = 1;
+		/* Catch several broken garbage emulations plus some pre
+		   ATA devices */
+		if (ata_id_major_version(dev->id) == 0 &&
+					dev->pio_mode <= XFER_PIO_2)
+			ign_dev_err = 1;
+		/* Some very old devices and some bad newer ones fail
+		   any kind of SET_XFERMODE request but support PIO0-2
+		   timings and no IORDY */
+		if (!ata_id_has_iordy(dev->id) && dev->pio_mode <= XFER_PIO_2)
+			ign_dev_err = 1;
+	}
+	/* Early MWDMA devices do DMA but don't allow DMA mode setting.
+	   Don't fail an MWDMA0 set IFF the device indicates it is in MWDMA0 */
+	if (dev->xfer_shift == ATA_SHIFT_MWDMA &&
+	    dev->dma_mode == XFER_MW_DMA_0 &&
+	    (dev->id[63] >> 8) & 1)
+		ign_dev_err = 1;
+
+	/* if the device is actually configured correctly, ignore dev err */
+	if (dev->xfer_mode == ata_xfer_mask2mode(ata_id_xfermask(dev->id)))
+		ign_dev_err = 1;
+
+	if (err_mask & AC_ERR_DEV) {
+		if (!ign_dev_err)
+			goto fail;
+		else
+			dev_err_whine = " (device error ignored)";
+	}
+
+	ata_dev_dbg(dev, "xfer_shift=%u, xfer_mode=0x%x\n",
+		    dev->xfer_shift, (int)dev->xfer_mode);
+
+	if (!(ehc->i.flags & ATA_EHI_QUIET) ||
+	    ehc->i.flags & ATA_EHI_DID_HARDRESET)
+		ata_dev_info(dev, "configured for %s%s\n",
+			     ata_mode_string(ata_xfer_mode2mask(dev->xfer_mode)),
+			     dev_err_whine);
+
+	return 0;
+
+ fail:
+	ata_dev_err(dev, "failed to set xfermode (err_mask=0x%x)\n", err_mask);
+	return -EIO;
+}
+
+/**
+ *	ata_do_set_mode - Program timings and issue SET FEATURES - XFER
+ *	@link: link on which timings will be programmed
+ *	@r_failed_dev: out parameter for failed device
+ *
+ *	Standard implementation of the function used to tune and set
+ *	ATA device disk transfer mode (PIO3, UDMA6, etc.).  If
+ *	ata_dev_set_mode() fails, pointer to the failing device is
+ *	returned in @r_failed_dev.
+ *
+ *	LOCKING:
+ *	PCI/etc. bus probe sem.
+ *
+ *	RETURNS:
+ *	0 on success, negative errno otherwise
+ */
+
+int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev)
+{
+	struct ata_port *ap = link->ap;
+	struct ata_device *dev;
+	int rc = 0, used_dma = 0, found = 0;
+
+	/* step 1: calculate xfer_mask */
+	ata_for_each_dev(dev, link, ENABLED) {
+		unsigned int pio_mask, dma_mask;
+		unsigned int mode_mask;
+
+		mode_mask = ATA_DMA_MASK_ATA;
+		if (dev->class == ATA_DEV_ATAPI)
+			mode_mask = ATA_DMA_MASK_ATAPI;
+		else if (ata_id_is_cfa(dev->id))
+			mode_mask = ATA_DMA_MASK_CFA;
+
+		ata_dev_xfermask(dev);
+		ata_force_xfermask(dev);
+
+		pio_mask = ata_pack_xfermask(dev->pio_mask, 0, 0);
+
+		if (libata_dma_mask & mode_mask)
+			dma_mask = ata_pack_xfermask(0, dev->mwdma_mask,
+						     dev->udma_mask);
+		else
+			dma_mask = 0;
+
+		dev->pio_mode = ata_xfer_mask2mode(pio_mask);
+		dev->dma_mode = ata_xfer_mask2mode(dma_mask);
+
+		found = 1;
+		if (ata_dma_enabled(dev))
+			used_dma = 1;
+	}
+	if (!found)
+		goto out;
+
+	/* step 2: always set host PIO timings */
+	ata_for_each_dev(dev, link, ENABLED) {
+		if (dev->pio_mode == 0xff) {
+			ata_dev_warn(dev, "no PIO support\n");
+			rc = -EINVAL;
+			goto out;
+		}
+
+		dev->xfer_mode = dev->pio_mode;
+		dev->xfer_shift = ATA_SHIFT_PIO;
+		if (ap->ops->set_piomode)
+			ap->ops->set_piomode(ap, dev);
+	}
+
+	/* step 3: set host DMA timings */
+	ata_for_each_dev(dev, link, ENABLED) {
+		if (!ata_dma_enabled(dev))
+			continue;
+
+		dev->xfer_mode = dev->dma_mode;
+		dev->xfer_shift = ata_xfer_mode2shift(dev->dma_mode);
+		if (ap->ops->set_dmamode)
+			ap->ops->set_dmamode(ap, dev);
+	}
+
+	/* step 4: update devices' xfer mode */
+	ata_for_each_dev(dev, link, ENABLED) {
+		rc = ata_dev_set_mode(dev);
+		if (rc)
+			goto out;
+	}
+
+	/* Record simplex status. If we selected DMA then the other
+	 * host channels are not permitted to do so.
+	 */
+	if (used_dma && (ap->host->flags & ATA_HOST_SIMPLEX))
+		ap->host->simplex_claimed = ap;
+
+ out:
+	if (rc)
+		*r_failed_dev = dev;
+	return rc;
+}
+EXPORT_SYMBOL_GPL(ata_do_set_mode);
+
+/**
+ *	ata_wait_ready - wait for link to become ready
+ *	@link: link to be waited on
+ *	@deadline: deadline jiffies for the operation
+ *	@check_ready: callback to check link readiness
+ *
+ *	Wait for @link to become ready.  @check_ready should return
+ *	positive number if @link is ready, 0 if it isn't, -ENODEV if
+ *	link doesn't seem to be occupied, other errno for other error
+ *	conditions.
+ *
+ *	Transient -ENODEV conditions are allowed for
+ *	ATA_TMOUT_FF_WAIT.
+ *
+ *	LOCKING:
+ *	EH context.
+ *
+ *	RETURNS:
+ *	0 if @link is ready before @deadline; otherwise, -errno.
+ */
+int ata_wait_ready(struct ata_link *link, unsigned long deadline,
+		   int (*check_ready)(struct ata_link *link))
+{
+	unsigned long start = jiffies;
+	unsigned long nodev_deadline;
+	int warned = 0;
+
+	/* choose which 0xff timeout to use, read comment in libata.h */
+	if (link->ap->host->flags & ATA_HOST_PARALLEL_SCAN)
+		nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT_LONG);
+	else
+		nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT);
+
+	/* Slave readiness can't be tested separately from master.  On
+	 * M/S emulation configuration, this function should be called
+	 * only on the master and it will handle both master and slave.
+	 */
+	WARN_ON(link == link->ap->slave_link);
+
+	if (time_after(nodev_deadline, deadline))
+		nodev_deadline = deadline;
+
+	while (1) {
+		unsigned long now = jiffies;
+		int ready, tmp;
+
+		ready = tmp = check_ready(link);
+		if (ready > 0)
+			return 0;
+
+		/*
+		 * -ENODEV could be transient.  Ignore -ENODEV if link
+		 * is online.  Also, some SATA devices take a long
+		 * time to clear 0xff after reset.  Wait for
+		 * ATA_TMOUT_FF_WAIT[_LONG] on -ENODEV if link isn't
+		 * offline.
+		 *
+		 * Note that some PATA controllers (pata_ali) explode
+		 * if status register is read more than once when
+		 * there's no device attached.
+		 */
+		if (ready == -ENODEV) {
+			if (ata_link_online(link))
+				ready = 0;
+			else if ((link->ap->flags & ATA_FLAG_SATA) &&
+				 !ata_link_offline(link) &&
+				 time_before(now, nodev_deadline))
+				ready = 0;
+		}
+
+		if (ready)
+			return ready;
+		if (time_after(now, deadline))
+			return -EBUSY;
+
+		if (!warned && time_after(now, start + 5 * HZ) &&
+		    (deadline - now > 3 * HZ)) {
+			ata_link_warn(link,
+				"link is slow to respond, please be patient "
+				"(ready=%d)\n", tmp);
+			warned = 1;
+		}
+
+		ata_msleep(link->ap, 50);
+	}
+}
+
+/**
+ *	ata_wait_after_reset - wait for link to become ready after reset
+ *	@link: link to be waited on
+ *	@deadline: deadline jiffies for the operation
+ *	@check_ready: callback to check link readiness
+ *
+ *	Wait for @link to become ready after reset.
+ *
+ *	LOCKING:
+ *	EH context.
+ *
+ *	RETURNS:
+ *	0 if @link is ready before @deadline; otherwise, -errno.
+ */
+int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
+				int (*check_ready)(struct ata_link *link))
+{
+	ata_msleep(link->ap, ATA_WAIT_AFTER_RESET);
+
+	return ata_wait_ready(link, deadline, check_ready);
+}
+EXPORT_SYMBOL_GPL(ata_wait_after_reset);
+
+/**
+ *	ata_std_prereset - prepare for reset
+ *	@link: ATA link to be reset
+ *	@deadline: deadline jiffies for the operation
+ *
+ *	@link is about to be reset.  Initialize it.  Failure from
+ *	prereset makes libata abort whole reset sequence and give up
+ *	that port, so prereset should be best-effort.  It does its
+ *	best to prepare for reset sequence but if things go wrong, it
+ *	should just whine, not fail.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	Always 0.
+ */
+int ata_std_prereset(struct ata_link *link, unsigned long deadline)
+{
+	struct ata_port *ap = link->ap;
+	struct ata_eh_context *ehc = &link->eh_context;
+	const unsigned int *timing = sata_ehc_deb_timing(ehc);
+	int rc;
+
+	/* if we're about to do hardreset, nothing more to do */
+	if (ehc->i.action & ATA_EH_HARDRESET)
+		return 0;
+
+	/* if SATA, resume link */
+	if (ap->flags & ATA_FLAG_SATA) {
+		rc = sata_link_resume(link, timing, deadline);
+		/* whine about phy resume failure but proceed */
+		if (rc && rc != -EOPNOTSUPP)
+			ata_link_warn(link,
+				      "failed to resume link for reset (errno=%d)\n",
+				      rc);
+	}
+
+	/* no point in trying softreset on offline link */
+	if (ata_phys_link_offline(link))
+		ehc->i.action &= ~ATA_EH_SOFTRESET;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ata_std_prereset);
+
+/**
+ *	ata_std_postreset - standard postreset callback
+ *	@link: the target ata_link
+ *	@classes: classes of attached devices
+ *
+ *	This function is invoked after a successful reset.  Note that
+ *	the device might have been reset more than once using
+ *	different reset methods before postreset is invoked.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ */
+void ata_std_postreset(struct ata_link *link, unsigned int *classes)
+{
+	u32 serror;
+
+	/* reset complete, clear SError */
+	if (!sata_scr_read(link, SCR_ERROR, &serror))
+		sata_scr_write(link, SCR_ERROR, serror);
+
+	/* print link status */
+	sata_print_link_status(link);
+}
+EXPORT_SYMBOL_GPL(ata_std_postreset);
+
+/**
+ *	ata_dev_same_device - Determine whether new ID matches configured device
+ *	@dev: device to compare against
+ *	@new_class: class of the new device
+ *	@new_id: IDENTIFY page of the new device
+ *
+ *	Compare @new_class and @new_id against @dev and determine
+ *	whether @dev is the device indicated by @new_class and
+ *	@new_id.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	1 if @dev matches @new_class and @new_id, 0 otherwise.
+ */
+static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class,
+			       const u16 *new_id)
+{
+	const u16 *old_id = dev->id;
+	unsigned char model[2][ATA_ID_PROD_LEN + 1];
+	unsigned char serial[2][ATA_ID_SERNO_LEN + 1];
+
+	if (dev->class != new_class) {
+		ata_dev_info(dev, "class mismatch %d != %d\n",
+			     dev->class, new_class);
+		return 0;
+	}
+
+	ata_id_c_string(old_id, model[0], ATA_ID_PROD, sizeof(model[0]));
+	ata_id_c_string(new_id, model[1], ATA_ID_PROD, sizeof(model[1]));
+	ata_id_c_string(old_id, serial[0], ATA_ID_SERNO, sizeof(serial[0]));
+	ata_id_c_string(new_id, serial[1], ATA_ID_SERNO, sizeof(serial[1]));
+
+	if (strcmp(model[0], model[1])) {
+		ata_dev_info(dev, "model number mismatch '%s' != '%s'\n",
+			     model[0], model[1]);
+		return 0;
+	}
+
+	if (strcmp(serial[0], serial[1])) {
+		ata_dev_info(dev, "serial number mismatch '%s' != '%s'\n",
+			     serial[0], serial[1]);
+		return 0;
+	}
+
+	return 1;
+}
+
+/**
+ *	ata_dev_reread_id - Re-read IDENTIFY data
+ *	@dev: target ATA device
+ *	@readid_flags: read ID flags
+ *
+ *	Re-read IDENTIFY page and make sure @dev is still attached to
+ *	the port.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	0 on success, negative errno otherwise
+ */
+int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags)
+{
+	unsigned int class = dev->class;
+	u16 *id = (void *)dev->sector_buf;
+	int rc;
+
+	/* read ID data */
+	rc = ata_dev_read_id(dev, &class, readid_flags, id);
+	if (rc)
+		return rc;
+
+	/* is the device still there? */
+	if (!ata_dev_same_device(dev, class, id))
+		return -ENODEV;
+
+	memcpy(dev->id, id, sizeof(id[0]) * ATA_ID_WORDS);
+	return 0;
+}
+
+/**
+ *	ata_dev_revalidate - Revalidate ATA device
+ *	@dev: device to revalidate
+ *	@new_class: new class code
+ *	@readid_flags: read ID flags
+ *
+ *	Re-read IDENTIFY page, make sure @dev is still attached to the
+ *	port and reconfigure it according to the new IDENTIFY page.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	0 on success, negative errno otherwise
+ */
+int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
+		       unsigned int readid_flags)
+{
+	u64 n_sectors = dev->n_sectors;
+	u64 n_native_sectors = dev->n_native_sectors;
+	int rc;
+
+	if (!ata_dev_enabled(dev))
+		return -ENODEV;
+
+	/* fail early if !ATA && !ATAPI to avoid issuing [P]IDENTIFY to PMP */
+	if (ata_class_enabled(new_class) && new_class == ATA_DEV_PMP) {
+		ata_dev_info(dev, "class mismatch %u != %u\n",
+			     dev->class, new_class);
+		rc = -ENODEV;
+		goto fail;
+	}
+
+	/* re-read ID */
+	rc = ata_dev_reread_id(dev, readid_flags);
+	if (rc)
+		goto fail;
+
+	/* configure device according to the new ID */
+	rc = ata_dev_configure(dev);
+	if (rc)
+		goto fail;
+
+	/* verify n_sectors hasn't changed */
+	if (dev->class != ATA_DEV_ATA || !n_sectors ||
+	    dev->n_sectors == n_sectors)
+		return 0;
+
+	/* n_sectors has changed */
+	ata_dev_warn(dev, "n_sectors mismatch %llu != %llu\n",
+		     (unsigned long long)n_sectors,
+		     (unsigned long long)dev->n_sectors);
+
+	/*
+	 * Something could have caused HPA to be unlocked
+	 * involuntarily.  If n_native_sectors hasn't changed and the
+	 * new size matches it, keep the device.
+	 */
+	if (dev->n_native_sectors == n_native_sectors &&
+	    dev->n_sectors > n_sectors && dev->n_sectors == n_native_sectors) {
+		ata_dev_warn(dev,
+			     "new n_sectors matches native, probably "
+			     "late HPA unlock, n_sectors updated\n");
+		/* use the larger n_sectors */
+		return 0;
+	}
+
+	/*
+	 * Some BIOSes boot w/o HPA but resume w/ HPA locked.  Try
+	 * unlocking HPA in those cases.
+	 *
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=15396
+	 */
+	if (dev->n_native_sectors == n_native_sectors &&
+	    dev->n_sectors < n_sectors && n_sectors == n_native_sectors &&
+	    !(dev->quirks & ATA_QUIRK_BROKEN_HPA)) {
+		ata_dev_warn(dev,
+			     "old n_sectors matches native, probably "
+			     "late HPA lock, will try to unlock HPA\n");
+		/* try unlocking HPA */
+		dev->flags |= ATA_DFLAG_UNLOCK_HPA;
+		rc = -EIO;
+	} else
+		rc = -ENODEV;
+
+	/* restore original n_[native_]sectors and fail */
+	dev->n_native_sectors = n_native_sectors;
+	dev->n_sectors = n_sectors;
+ fail:
+	ata_dev_err(dev, "revalidation failed (errno=%d)\n", rc);
+	return rc;
+}
+
+static const char * const ata_quirk_names[] = {
+	[__ATA_QUIRK_DIAGNOSTIC]	= "diagnostic",
+	[__ATA_QUIRK_NODMA]		= "nodma",
+	[__ATA_QUIRK_NONCQ]		= "noncq",
+	[__ATA_QUIRK_MAX_SEC_128]	= "maxsec128",
+	[__ATA_QUIRK_BROKEN_HPA]	= "brokenhpa",
+	[__ATA_QUIRK_DISABLE]		= "disable",
+	[__ATA_QUIRK_HPA_SIZE]		= "hpasize",
+	[__ATA_QUIRK_IVB]		= "ivb",
+	[__ATA_QUIRK_STUCK_ERR]		= "stuckerr",
+	[__ATA_QUIRK_BRIDGE_OK]		= "bridgeok",
+	[__ATA_QUIRK_ATAPI_MOD16_DMA]	= "atapimod16dma",
+	[__ATA_QUIRK_FIRMWARE_WARN]	= "firmwarewarn",
+	[__ATA_QUIRK_1_5_GBPS]		= "1.5gbps",
+	[__ATA_QUIRK_NOSETXFER]		= "nosetxfer",
+	[__ATA_QUIRK_BROKEN_FPDMA_AA]	= "brokenfpdmaaa",
+	[__ATA_QUIRK_DUMP_ID]		= "dumpid",
+	[__ATA_QUIRK_MAX_SEC_LBA48]	= "maxseclba48",
+	[__ATA_QUIRK_ATAPI_DMADIR]	= "atapidmadir",
+	[__ATA_QUIRK_NO_NCQ_TRIM]	= "noncqtrim",
+	[__ATA_QUIRK_NOLPM]		= "nolpm",
+	[__ATA_QUIRK_WD_BROKEN_LPM]	= "wdbrokenlpm",
+	[__ATA_QUIRK_ZERO_AFTER_TRIM]	= "zeroaftertrim",
+	[__ATA_QUIRK_NO_DMA_LOG]	= "nodmalog",
+	[__ATA_QUIRK_NOTRIM]		= "notrim",
+	[__ATA_QUIRK_MAX_SEC_1024]	= "maxsec1024",
+	[__ATA_QUIRK_MAX_TRIM_128M]	= "maxtrim128m",
+	[__ATA_QUIRK_NO_NCQ_ON_ATI]	= "noncqonati",
+	[__ATA_QUIRK_NO_ID_DEV_LOG]	= "noiddevlog",
+	[__ATA_QUIRK_NO_LOG_DIR]	= "nologdir",
+	[__ATA_QUIRK_NO_FUA]		= "nofua",
+};
+
+static void ata_dev_print_quirks(const struct ata_device *dev,
+				 const char *model, const char *rev,
+				 unsigned int quirks)
+{
+	struct ata_eh_context *ehc = &dev->link->eh_context;
+	int n = 0, i;
+	size_t sz;
+	char *str;
+
+	if (!ata_dev_print_info(dev) || ehc->i.flags & ATA_EHI_DID_PRINT_QUIRKS)
+		return;
+
+	ehc->i.flags |= ATA_EHI_DID_PRINT_QUIRKS;
+
+	if (!quirks)
+		return;
+
+	sz = 64 + ARRAY_SIZE(ata_quirk_names) * 16;
+	str = kmalloc(sz, GFP_KERNEL);
+	if (!str)
+		return;
+
+	n = snprintf(str, sz, "Model '%s', rev '%s', applying quirks:",
+		     model, rev);
+
+	for (i = 0; i < ARRAY_SIZE(ata_quirk_names); i++) {
+		if (quirks & (1U << i))
+			n += snprintf(str + n, sz - n,
+				      " %s", ata_quirk_names[i]);
+	}
+
+	ata_dev_warn(dev, "%s\n", str);
+
+	kfree(str);
+}
+
+struct ata_dev_quirks_entry {
+	const char *model_num;
+	const char *model_rev;
+	unsigned int quirks;
+};
+
+static const struct ata_dev_quirks_entry __ata_dev_quirks[] = {
+	/* Devices with DMA related problems under Linux */
+	{ "WDC AC11000H",	NULL,		ATA_QUIRK_NODMA },
+	{ "WDC AC22100H",	NULL,		ATA_QUIRK_NODMA },
+	{ "WDC AC32500H",	NULL,		ATA_QUIRK_NODMA },
+	{ "WDC AC33100H",	NULL,		ATA_QUIRK_NODMA },
+	{ "WDC AC31600H",	NULL,		ATA_QUIRK_NODMA },
+	{ "WDC AC32100H",	"24.09P07",	ATA_QUIRK_NODMA },
+	{ "WDC AC23200L",	"21.10N21",	ATA_QUIRK_NODMA },
+	{ "Compaq CRD-8241B",	NULL,		ATA_QUIRK_NODMA },
+	{ "CRD-8400B",		NULL,		ATA_QUIRK_NODMA },
+	{ "CRD-848[02]B",	NULL,		ATA_QUIRK_NODMA },
+	{ "CRD-84",		NULL,		ATA_QUIRK_NODMA },
+	{ "SanDisk SDP3B",	NULL,		ATA_QUIRK_NODMA },
+	{ "SanDisk SDP3B-64",	NULL,		ATA_QUIRK_NODMA },
+	{ "SANYO CD-ROM CRD",	NULL,		ATA_QUIRK_NODMA },
+	{ "HITACHI CDR-8",	NULL,		ATA_QUIRK_NODMA },
+	{ "HITACHI CDR-8[34]35", NULL,		ATA_QUIRK_NODMA },
+	{ "Toshiba CD-ROM XM-6202B", NULL,	ATA_QUIRK_NODMA },
+	{ "TOSHIBA CD-ROM XM-1702BC", NULL,	ATA_QUIRK_NODMA },
+	{ "CD-532E-A",		NULL,		ATA_QUIRK_NODMA },
+	{ "E-IDE CD-ROM CR-840", NULL,		ATA_QUIRK_NODMA },
+	{ "CD-ROM Drive/F5A",	NULL,		ATA_QUIRK_NODMA },
+	{ "WPI CDD-820",	NULL,		ATA_QUIRK_NODMA },
+	{ "SAMSUNG CD-ROM SC-148C", NULL,	ATA_QUIRK_NODMA },
+	{ "SAMSUNG CD-ROM SC",	NULL,		ATA_QUIRK_NODMA },
+	{ "ATAPI CD-ROM DRIVE 40X MAXIMUM", NULL, ATA_QUIRK_NODMA },
+	{ "_NEC DV5800A",	NULL,		ATA_QUIRK_NODMA },
+	{ "SAMSUNG CD-ROM SN-124", "N001",	ATA_QUIRK_NODMA },
+	{ "Seagate STT20000A", NULL,		ATA_QUIRK_NODMA },
+	{ " 2GB ATA Flash Disk", "ADMA428M",	ATA_QUIRK_NODMA },
+	{ "VRFDFC22048UCHC-TE*", NULL,		ATA_QUIRK_NODMA },
+	/* Odd clown on sil3726/4726 PMPs */
+	{ "Config  Disk",	NULL,		ATA_QUIRK_DISABLE },
+	/* Similar story with ASMedia 1092 */
+	{ "ASMT109x- Config",	NULL,		ATA_QUIRK_DISABLE },
+
+	/* Weird ATAPI devices */
+	{ "TORiSAN DVD-ROM DRD-N216", NULL,	ATA_QUIRK_MAX_SEC_128 },
+	{ "QUANTUM DAT    DAT72-000", NULL,	ATA_QUIRK_ATAPI_MOD16_DMA },
+	{ "Slimtype DVD A  DS8A8SH", NULL,	ATA_QUIRK_MAX_SEC_LBA48 },
+	{ "Slimtype DVD A  DS8A9SH", NULL,	ATA_QUIRK_MAX_SEC_LBA48 },
+
+	/*
+	 * Causes silent data corruption with higher max sects.
+	 * http://lkml.kernel.org/g/x49wpy40ysk.fsf@segfault.boston.devel.redhat.com
+	 */
+	{ "ST380013AS",		"3.20",		ATA_QUIRK_MAX_SEC_1024 },
+
+	/*
+	 * These devices time out with higher max sects.
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=121671
+	 */
+	{ "LITEON CX1-JB*-HP",	NULL,		ATA_QUIRK_MAX_SEC_1024 },
+	{ "LITEON EP1-*",	NULL,		ATA_QUIRK_MAX_SEC_1024 },
+
+	/* Devices we expect to fail diagnostics */
+
+	/* Devices where NCQ should be avoided */
+	/* NCQ is slow */
+	{ "WDC WD740ADFD-00",	NULL,		ATA_QUIRK_NONCQ },
+	{ "WDC WD740ADFD-00NLR1", NULL,		ATA_QUIRK_NONCQ },
+	/* http://thread.gmane.org/gmane.linux.ide/14907 */
+	{ "FUJITSU MHT2060BH",	NULL,		ATA_QUIRK_NONCQ },
+	/* NCQ is broken */
+	{ "Maxtor *",		"BANC*",	ATA_QUIRK_NONCQ },
+	{ "Maxtor 7V300F0",	"VA111630",	ATA_QUIRK_NONCQ },
+	{ "ST380817AS",		"3.42",		ATA_QUIRK_NONCQ },
+	{ "ST3160023AS",	"3.42",		ATA_QUIRK_NONCQ },
+	{ "OCZ CORE_SSD",	"02.10104",	ATA_QUIRK_NONCQ },
+
+	/* Seagate NCQ + FLUSH CACHE firmware bug */
+	{ "ST31500341AS",	"SD1[5-9]",	ATA_QUIRK_NONCQ |
+						ATA_QUIRK_FIRMWARE_WARN },
+
+	{ "ST31000333AS",	"SD1[5-9]",	ATA_QUIRK_NONCQ |
+						ATA_QUIRK_FIRMWARE_WARN },
+
+	{ "ST3640[36]23AS",	"SD1[5-9]",	ATA_QUIRK_NONCQ |
+						ATA_QUIRK_FIRMWARE_WARN },
+
+	{ "ST3320[68]13AS",	"SD1[5-9]",	ATA_QUIRK_NONCQ |
+						ATA_QUIRK_FIRMWARE_WARN },
+
+	/* drives which fail FPDMA_AA activation (some may freeze afterwards)
+	   the ST disks also have LPM issues */
+	{ "ST1000LM024 HN-M101MBB", NULL,	ATA_QUIRK_BROKEN_FPDMA_AA |
+						ATA_QUIRK_NOLPM },
+	{ "VB0250EAVER",	"HPG7",		ATA_QUIRK_BROKEN_FPDMA_AA },
+
+	/* Blacklist entries taken from Silicon Image 3124/3132
+	   Windows driver .inf file - also several Linux problem reports */
+	{ "HTS541060G9SA00",    "MB3OC60D",     ATA_QUIRK_NONCQ },
+	{ "HTS541080G9SA00",    "MB4OC60D",     ATA_QUIRK_NONCQ },
+	{ "HTS541010G9SA00",    "MBZOC60D",     ATA_QUIRK_NONCQ },
+
+	/* https://bugzilla.kernel.org/show_bug.cgi?id=15573 */
+	{ "C300-CTFDDAC128MAG",	"0001",		ATA_QUIRK_NONCQ },
+
+	/* Sandisk SD7/8/9s lock up hard on large trims */
+	{ "SanDisk SD[789]*",	NULL,		ATA_QUIRK_MAX_TRIM_128M },
+
+	/* devices which puke on READ_NATIVE_MAX */
+	{ "HDS724040KLSA80",	"KFAOA20N",	ATA_QUIRK_BROKEN_HPA },
+	{ "WDC WD3200JD-00KLB0", "WD-WCAMR1130137", ATA_QUIRK_BROKEN_HPA },
+	{ "WDC WD2500JD-00HBB0", "WD-WMAL71490727", ATA_QUIRK_BROKEN_HPA },
+	{ "MAXTOR 6L080L4",	"A93.0500",	ATA_QUIRK_BROKEN_HPA },
+
+	/* this one allows HPA unlocking but fails IOs on the area */
+	{ "OCZ-VERTEX",		    "1.30",	ATA_QUIRK_BROKEN_HPA },
+
+	/* Devices which report 1 sector over size HPA */
+	{ "ST340823A",		NULL,		ATA_QUIRK_HPA_SIZE },
+	{ "ST320413A",		NULL,		ATA_QUIRK_HPA_SIZE },
+	{ "ST310211A",		NULL,		ATA_QUIRK_HPA_SIZE },
+
+	/* Devices which get the IVB wrong */
+	{ "QUANTUM FIREBALLlct10 05", "A03.0900", ATA_QUIRK_IVB },
+	/* Maybe we should just add all TSSTcorp devices... */
+	{ "TSSTcorp CDDVDW SH-S202[HJN]", "SB0[01]",  ATA_QUIRK_IVB },
+
+	/* Devices that do not need bridging limits applied */
+	{ "MTRON MSP-SATA*",		NULL,	ATA_QUIRK_BRIDGE_OK },
+	{ "BUFFALO HD-QSU2/R5",		NULL,	ATA_QUIRK_BRIDGE_OK },
+
+	/* Devices which aren't very happy with higher link speeds */
+	{ "WD My Book",			NULL,	ATA_QUIRK_1_5_GBPS },
+	{ "Seagate FreeAgent GoFlex",	NULL,	ATA_QUIRK_1_5_GBPS },
+
+	/*
+	 * Devices which choke on SETXFER.  Applies only if both the
+	 * device and controller are SATA.
+	 */
+	{ "PIONEER DVD-RW  DVRTD08",	NULL,	ATA_QUIRK_NOSETXFER },
+	{ "PIONEER DVD-RW  DVRTD08A",	NULL,	ATA_QUIRK_NOSETXFER },
+	{ "PIONEER DVD-RW  DVR-215",	NULL,	ATA_QUIRK_NOSETXFER },
+	{ "PIONEER DVD-RW  DVR-212D",	NULL,	ATA_QUIRK_NOSETXFER },
+	{ "PIONEER DVD-RW  DVR-216D",	NULL,	ATA_QUIRK_NOSETXFER },
+
+	/* These specific Pioneer models have LPM issues */
+	{ "PIONEER BD-RW   BDR-207M",	NULL,	ATA_QUIRK_NOLPM },
+	{ "PIONEER BD-RW   BDR-205",	NULL,	ATA_QUIRK_NOLPM },
+
+	/* Crucial devices with broken LPM support */
+	{ "CT*0BX*00SSD1",		NULL,	ATA_QUIRK_NOLPM },
+
+	/* 512GB MX100 with MU01 firmware has both queued TRIM and LPM issues */
+	{ "Crucial_CT512MX100*",	"MU01",	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NOLPM },
+	/* 512GB MX100 with newer firmware has only LPM issues */
+	{ "Crucial_CT512MX100*",	NULL,	ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NOLPM },
+
+	/* 480GB+ M500 SSDs have both queued TRIM and LPM issues */
+	{ "Crucial_CT480M500*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NOLPM },
+	{ "Crucial_CT960M500*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NOLPM },
+
+	/* AMD Radeon devices with broken LPM support */
+	{ "R3SL240G",			NULL,	ATA_QUIRK_NOLPM },
+
+	/* Apacer models with LPM issues */
+	{ "Apacer AS340*",		NULL,	ATA_QUIRK_NOLPM },
+
+	/* These specific Samsung models/firmware-revs do not handle LPM well */
+	{ "SAMSUNG MZMPC128HBFU-000MV", "CXM14M1Q", ATA_QUIRK_NOLPM },
+	{ "SAMSUNG SSD PM830 mSATA *",  "CXM13D1Q", ATA_QUIRK_NOLPM },
+	{ "SAMSUNG MZ7TD256HAFV-000L9", NULL,       ATA_QUIRK_NOLPM },
+	{ "SAMSUNG MZ7TE512HMHP-000L1", "EXT06L0Q", ATA_QUIRK_NOLPM },
+
+	/* devices that don't properly handle queued TRIM commands */
+	{ "Micron_M500IT_*",		"MU01",	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Micron_M500_*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Micron_M5[15]0_*",		"MU01",	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Micron_1100_*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM, },
+	{ "Crucial_CT*M500*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Crucial_CT*M550*",		"MU01",	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Crucial_CT*MX100*",		"MU01",	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Samsung SSD 840 EVO*",	NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_NO_DMA_LOG |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Samsung SSD 840*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Samsung SSD 850*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Samsung SSD 860*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NO_NCQ_ON_ATI },
+	{ "Samsung SSD 870*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NO_NCQ_ON_ATI },
+	{ "SAMSUNG*MZ7LH*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM |
+						ATA_QUIRK_NO_NCQ_ON_ATI, },
+	{ "FCCT*M500*",			NULL,	ATA_QUIRK_NO_NCQ_TRIM |
+						ATA_QUIRK_ZERO_AFTER_TRIM },
+
+	/* devices that don't properly handle TRIM commands */
+	{ "SuperSSpeed S238*",		NULL,	ATA_QUIRK_NOTRIM },
+	{ "M88V29*",			NULL,	ATA_QUIRK_NOTRIM },
+
+	/*
+	 * As defined, the DRAT (Deterministic Read After Trim) and RZAT
+	 * (Return Zero After Trim) flags in the ATA Command Set are
+	 * unreliable in the sense that they only define what happens if
+	 * the device successfully executed the DSM TRIM command. TRIM
+	 * is only advisory, however, and the device is free to silently
+	 * ignore all or parts of the request.
+	 *
+	 * Whitelist drives that are known to reliably return zeroes
+	 * after TRIM.
+	 */
+
+	/*
+	 * The intel 510 drive has buggy DRAT/RZAT. Explicitly exclude
+	 * that model before whitelisting all other intel SSDs.
+	 */
+	{ "INTEL*SSDSC2MH*",		NULL,	0 },
+
+	{ "Micron*",			NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Crucial*",			NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "INTEL*SSD*",			NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "SSD*INTEL*",			NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "Samsung*SSD*",		NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "SAMSUNG*SSD*",		NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "SAMSUNG*MZ7KM*",		NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+	{ "ST[1248][0248]0[FH]*",	NULL,	ATA_QUIRK_ZERO_AFTER_TRIM },
+
+	/*
+	 * Some WD SATA-I drives spin up and down erratically when the link
+	 * is put into the slumber mode.  We don't have full list of the
+	 * affected devices.  Disable LPM if the device matches one of the
+	 * known prefixes and is SATA-1.  As a side effect LPM partial is
+	 * lost too.
+	 *
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=57211
+	 */
+	{ "WDC WD800JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+	{ "WDC WD1200JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+	{ "WDC WD1600JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+	{ "WDC WD2000JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+	{ "WDC WD2500JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+	{ "WDC WD3000JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+	{ "WDC WD3200JD-*",		NULL,	ATA_QUIRK_WD_BROKEN_LPM },
+
+	/*
+	 * This sata dom device goes on a walkabout when the ATA_LOG_DIRECTORY
+	 * log page is accessed. Ensure we never ask for this log page with
+	 * these devices.
+	 */
+	{ "SATADOM-ML 3ME",		NULL,	ATA_QUIRK_NO_LOG_DIR },
+
+	/* Buggy FUA */
+	{ "Maxtor",		"BANC1G10",	ATA_QUIRK_NO_FUA },
+	{ "WDC*WD2500J*",	NULL,		ATA_QUIRK_NO_FUA },
+	{ "OCZ-VERTEX*",	NULL,		ATA_QUIRK_NO_FUA },
+	{ "INTEL*SSDSC2CT*",	NULL,		ATA_QUIRK_NO_FUA },
+
+	/* End Marker */
+	{ }
+};
+
+static unsigned int ata_dev_quirks(const struct ata_device *dev)
+{
+	unsigned char model_num[ATA_ID_PROD_LEN + 1];
+	unsigned char model_rev[ATA_ID_FW_REV_LEN + 1];
+	const struct ata_dev_quirks_entry *ad = __ata_dev_quirks;
+
+	/* dev->quirks is an unsigned int. */
+	BUILD_BUG_ON(__ATA_QUIRK_MAX > 32);
+
+	ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
+	ata_id_c_string(dev->id, model_rev, ATA_ID_FW_REV, sizeof(model_rev));
+
+	while (ad->model_num) {
+		if (glob_match(ad->model_num, model_num) &&
+		    (!ad->model_rev || glob_match(ad->model_rev, model_rev))) {
+			ata_dev_print_quirks(dev, model_num, model_rev,
+					     ad->quirks);
+			return ad->quirks;
+		}
+		ad++;
+	}
+	return 0;
+}
+
+static bool ata_dev_nodma(const struct ata_device *dev)
+{
+	/*
+	 * We do not support polling DMA. Deny DMA for those ATAPI devices
+	 * with CDB-intr (and use PIO) if the LLDD handles only interrupts in
+	 * the HSM_ST_LAST state.
+	 */
+	if ((dev->link->ap->flags & ATA_FLAG_PIO_POLLING) &&
+	    (dev->flags & ATA_DFLAG_CDB_INTR))
+		return true;
+	return dev->quirks & ATA_QUIRK_NODMA;
+}
+
+/**
+ *	ata_is_40wire		-	check drive side detection
+ *	@dev: device
+ *
+ *	Perform drive side detection decoding, allowing for device vendors
+ *	who can't follow the documentation.
+ */
+
+static int ata_is_40wire(struct ata_device *dev)
+{
+	if (dev->quirks & ATA_QUIRK_IVB)
+		return ata_drive_40wire_relaxed(dev->id);
+	return ata_drive_40wire(dev->id);
+}
+
+/**
+ *	cable_is_40wire		-	40/80/SATA decider
+ *	@ap: port to consider
+ *
+ *	This function encapsulates the policy for speed management
+ *	in one place. At the moment we don't cache the result but
+ *	there is a good case for setting ap->cbl to the result when
+ *	we are called with unknown cables (and figuring out if it
+ *	impacts hotplug at all).
+ *
+ *	Return 1 if the cable appears to be 40 wire.
+ */
+
+static int cable_is_40wire(struct ata_port *ap)
+{
+	struct ata_link *link;
+	struct ata_device *dev;
+
+	/* If the controller thinks we are 40 wire, we are. */
+	if (ap->cbl == ATA_CBL_PATA40)
+		return 1;
+
+	/* If the controller thinks we are 80 wire, we are. */
+	if (ap->cbl == ATA_CBL_PATA80 || ap->cbl == ATA_CBL_SATA)
+		return 0;
+
+	/* If the system is known to be 40 wire short cable (eg
+	 * laptop), then we allow 80 wire modes even if the drive
+	 * isn't sure.
+	 */
+	if (ap->cbl == ATA_CBL_PATA40_SHORT)
+		return 0;
+
+	/* If the controller doesn't know, we scan.
+	 *
+	 * Note: We look for all 40 wire detects at this point.  Any
+	 *       80 wire detect is taken to be 80 wire cable because
+	 * - in many setups only the one drive (slave if present) will
+	 *   give a valid detect
+	 * - if you have a non detect capable drive you don't want it
+	 *   to colour the choice
+	 */
+	ata_for_each_link(link, ap, EDGE) {
+		ata_for_each_dev(dev, link, ENABLED) {
+			if (!ata_is_40wire(dev))
+				return 0;
+		}
+	}
+	return 1;
+}
+
+/**
+ *	ata_dev_xfermask - Compute supported xfermask of the given device
+ *	@dev: Device to compute xfermask for
+ *
+ *	Compute supported xfermask of @dev and store it in
+ *	dev->*_mask.  This function is responsible for applying all
+ *	known limits including host controller limits, device quirks, etc...
+ *
+ *	LOCKING:
+ *	None.
+ */
+static void ata_dev_xfermask(struct ata_device *dev)
+{
+	struct ata_link *link = dev->link;
+	struct ata_port *ap = link->ap;
+	struct ata_host *host = ap->host;
+	unsigned int xfer_mask;
+
+	/* controller modes available */
+	xfer_mask = ata_pack_xfermask(ap->pio_mask,
+				      ap->mwdma_mask, ap->udma_mask);
+
+	/* drive modes available */
+	xfer_mask &= ata_pack_xfermask(dev->pio_mask,
+				       dev->mwdma_mask, dev->udma_mask);
+	xfer_mask &= ata_id_xfermask(dev->id);
+
+	/*
+	 *	CFA Advanced TrueIDE timings are not allowed on a shared
+	 *	cable
+	 */
+	if (ata_dev_pair(dev)) {
+		/* No PIO5 or PIO6 */
+		xfer_mask &= ~(0x03 << (ATA_SHIFT_PIO + 5));
+		/* No MWDMA3 or MWDMA 4 */
+		xfer_mask &= ~(0x03 << (ATA_SHIFT_MWDMA + 3));
+	}
+
+	if (ata_dev_nodma(dev)) {
+		xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
+		ata_dev_warn(dev,
+			     "device does not support DMA, disabling DMA\n");
+	}
+
+	if ((host->flags & ATA_HOST_SIMPLEX) &&
+	    host->simplex_claimed && host->simplex_claimed != ap) {
+		xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
+		ata_dev_warn(dev,
+			     "simplex DMA is claimed by other device, disabling DMA\n");
+	}
+
+	if (ap->flags & ATA_FLAG_NO_IORDY)
+		xfer_mask &= ata_pio_mask_no_iordy(dev);
+
+	if (ap->ops->mode_filter)
+		xfer_mask = ap->ops->mode_filter(dev, xfer_mask);
+
+	/* Apply cable rule here.  Don't apply it early because when
+	 * we handle hot plug the cable type can itself change.
+	 * Check this last so that we know if the transfer rate was
+	 * solely limited by the cable.
+	 * Unknown or 80 wire cables reported host side are checked
+	 * drive side as well. Cases where we know a 40wire cable
+	 * is used safely for 80 are not checked here.
+	 */
+	if (xfer_mask & (0xF8 << ATA_SHIFT_UDMA))
+		/* UDMA/44 or higher would be available */
+		if (cable_is_40wire(ap)) {
+			ata_dev_warn(dev,
+				     "limited to UDMA/33 due to 40-wire cable\n");
+			xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA);
+		}
+
+	ata_unpack_xfermask(xfer_mask, &dev->pio_mask,
+			    &dev->mwdma_mask, &dev->udma_mask);
+}
+
+/**
+ *	ata_dev_set_xfermode - Issue SET FEATURES - XFER MODE command
+ *	@dev: Device to which command will be sent
+ *
+ *	Issue SET FEATURES - XFER MODE command to device @dev
+ *	on port @ap.
+ *
+ *	LOCKING:
+ *	PCI/etc. bus probe sem.
+ *
+ *	RETURNS:
+ *	0 on success, AC_ERR_* mask otherwise.
+ */
+
+static unsigned int ata_dev_set_xfermode(struct ata_device *dev)
+{
+	struct ata_taskfile tf;
+
+	/* set up set-features taskfile */
+	ata_dev_dbg(dev, "set features - xfer mode\n");
+
+	/* Some controllers and ATAPI devices show flaky interrupt
+	 * behavior after setting xfer mode.  Use polling instead.
+	 */
+	ata_tf_init(dev, &tf);
+	tf.command = ATA_CMD_SET_FEATURES;
+	tf.feature = SETFEATURES_XFER;
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_POLLING;
+	tf.protocol = ATA_PROT_NODATA;
+	/* If we are using IORDY we must send the mode setting command */
+	if (ata_pio_need_iordy(dev))
+		tf.nsect = dev->xfer_mode;
+	/* If the device has IORDY and the controller does not - turn it off */
+ 	else if (ata_id_has_iordy(dev->id))
+		tf.nsect = 0x01;
+	else /* In the ancient relic department - skip all of this */
+		return 0;
+
+	/*
+	 * On some disks, this command causes spin-up, so we need longer
+	 * timeout.
+	 */
+	return ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 15000);
+}
+
+/**
+ *	ata_dev_set_feature - Issue SET FEATURES
+ *	@dev: Device to which command will be sent
+ *	@subcmd: The SET FEATURES subcommand to be sent
+ *	@action: The sector count represents a subcommand specific action
+ *
+ *	Issue SET FEATURES command to device @dev on port @ap with sector count
+ *
+ *	LOCKING:
+ *	PCI/etc. bus probe sem.
+ *
+ *	RETURNS:
+ *	0 on success, AC_ERR_* mask otherwise.
+ */
+unsigned int ata_dev_set_feature(struct ata_device *dev, u8 subcmd, u8 action)
+{
+	struct ata_taskfile tf;
+	unsigned int timeout = 0;
+
+	/* set up set-features taskfile */
+	ata_dev_dbg(dev, "set features\n");
+
+	ata_tf_init(dev, &tf);
+	tf.command = ATA_CMD_SET_FEATURES;
+	tf.feature = subcmd;
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
+	tf.protocol = ATA_PROT_NODATA;
+	tf.nsect = action;
+
+	if (subcmd == SETFEATURES_SPINUP)
+		timeout = ata_probe_timeout ?
+			  ata_probe_timeout * 1000 : SETFEATURES_SPINUP_TIMEOUT;
+
+	return ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, timeout);
+}
+EXPORT_SYMBOL_GPL(ata_dev_set_feature);
+
+/**
+ *	ata_dev_init_params - Issue INIT DEV PARAMS command
+ *	@dev: Device to which command will be sent
+ *	@heads: Number of heads (taskfile parameter)
+ *	@sectors: Number of sectors (taskfile parameter)
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	0 on success, AC_ERR_* mask otherwise.
+ */
+static unsigned int ata_dev_init_params(struct ata_device *dev,
+					u16 heads, u16 sectors)
+{
+	struct ata_taskfile tf;
+	unsigned int err_mask;
+
+	/* Number of sectors per track 1-255. Number of heads 1-16 */
+	if (sectors < 1 || sectors > 255 || heads < 1 || heads > 16)
+		return AC_ERR_INVALID;
+
+	/* set up init dev params taskfile */
+	ata_dev_dbg(dev, "init dev params \n");
+
+	ata_tf_init(dev, &tf);
+	tf.command = ATA_CMD_INIT_DEV_PARAMS;
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
+	tf.protocol = ATA_PROT_NODATA;
+	tf.nsect = sectors;
+	tf.device |= (heads - 1) & 0x0f; /* max head = num. of heads - 1 */
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+	/* A clean abort indicates an original or just out of spec drive
+	   and we should continue as we issue the setup based on the
+	   drive reported working geometry */
+	if (err_mask == AC_ERR_DEV && (tf.error & ATA_ABORTED))
+		err_mask = 0;
+
+	return err_mask;
+}
+
+/**
+ *	atapi_check_dma - Check whether ATAPI DMA can be supported
+ *	@qc: Metadata associated with taskfile to check
+ *
+ *	Allow low-level driver to filter ATA PACKET commands, returning
+ *	a status indicating whether or not it is OK to use DMA for the
+ *	supplied PACKET command.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ *
+ *	RETURNS: 0 when ATAPI DMA can be used
+ *               nonzero otherwise
+ */
+int atapi_check_dma(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+
+	/* Don't allow DMA if it isn't multiple of 16 bytes.  Quite a
+	 * few ATAPI devices choke on such DMA requests.
+	 */
+	if (!(qc->dev->quirks & ATA_QUIRK_ATAPI_MOD16_DMA) &&
+	    unlikely(qc->nbytes & 15))
+		return 1;
+
+	if (ap->ops->check_atapi_dma)
+		return ap->ops->check_atapi_dma(qc);
+
+	return 0;
+}
+
+/**
+ *	ata_std_qc_defer - Check whether a qc needs to be deferred
+ *	@qc: ATA command in question
+ *
+ *	Non-NCQ commands cannot run with any other command, NCQ or
+ *	not.  As upper layer only knows the queue depth, we are
+ *	responsible for maintaining exclusion.  This function checks
+ *	whether a new command @qc can be issued.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ *
+ *	RETURNS:
+ *	ATA_DEFER_* if deferring is needed, 0 otherwise.
+ */
+int ata_std_qc_defer(struct ata_queued_cmd *qc)
+{
+	struct ata_link *link = qc->dev->link;
+
+	if (ata_is_ncq(qc->tf.protocol)) {
+		if (!ata_tag_valid(link->active_tag))
+			return 0;
+	} else {
+		if (!ata_tag_valid(link->active_tag) && !link->sactive)
+			return 0;
+	}
+
+	return ATA_DEFER_LINK;
+}
+EXPORT_SYMBOL_GPL(ata_std_qc_defer);
+
+/**
+ *	ata_sg_init - Associate command with scatter-gather table.
+ *	@qc: Command to be associated
+ *	@sg: Scatter-gather table.
+ *	@n_elem: Number of elements in s/g table.
+ *
+ *	Initialize the data-related elements of queued_cmd @qc
+ *	to point to a scatter-gather table @sg, containing @n_elem
+ *	elements.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ */
+void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
+		 unsigned int n_elem)
+{
+	qc->sg = sg;
+	qc->n_elem = n_elem;
+	qc->cursg = qc->sg;
+}
+
+#ifdef CONFIG_HAS_DMA
+
+/**
+ *	ata_sg_clean - Unmap DMA memory associated with command
+ *	@qc: Command containing DMA memory to be released
+ *
+ *	Unmap all mapped DMA memory associated with this command.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ */
+static void ata_sg_clean(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	struct scatterlist *sg = qc->sg;
+	int dir = qc->dma_dir;
+
+	WARN_ON_ONCE(sg == NULL);
+
+	if (qc->n_elem)
+		dma_unmap_sg(ap->dev, sg, qc->orig_n_elem, dir);
+
+	qc->flags &= ~ATA_QCFLAG_DMAMAP;
+	qc->sg = NULL;
+}
+
+/**
+ *	ata_sg_setup - DMA-map the scatter-gather table associated with a command.
+ *	@qc: Command with scatter-gather table to be mapped.
+ *
+ *	DMA-map the scatter-gather table associated with queued_cmd @qc.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ *
+ *	RETURNS:
+ *	Zero on success, negative on error.
+ *
+ */
+static int ata_sg_setup(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	unsigned int n_elem;
+
+	n_elem = dma_map_sg(ap->dev, qc->sg, qc->n_elem, qc->dma_dir);
+	if (n_elem < 1)
+		return -1;
+
+	qc->orig_n_elem = qc->n_elem;
+	qc->n_elem = n_elem;
+	qc->flags |= ATA_QCFLAG_DMAMAP;
+
+	return 0;
+}
+
+#else /* !CONFIG_HAS_DMA */
+
+static inline void ata_sg_clean(struct ata_queued_cmd *qc) {}
+static inline int ata_sg_setup(struct ata_queued_cmd *qc) { return -1; }
+
+#endif /* !CONFIG_HAS_DMA */
+
+/**
+ *	swap_buf_le16 - swap halves of 16-bit words in place
+ *	@buf:  Buffer to swap
+ *	@buf_words:  Number of 16-bit words in buffer.
+ *
+ *	Swap halves of 16-bit words if needed to convert from
+ *	little-endian byte order to native cpu byte order, or
+ *	vice-versa.
+ *
+ *	LOCKING:
+ *	Inherited from caller.
+ */
+void swap_buf_le16(u16 *buf, unsigned int buf_words)
+{
+#ifdef __BIG_ENDIAN
+	unsigned int i;
+
+	for (i = 0; i < buf_words; i++)
+		buf[i] = le16_to_cpu(buf[i]);
+#endif /* __BIG_ENDIAN */
+}
+
+/**
+ *	ata_qc_free - free unused ata_queued_cmd
+ *	@qc: Command to complete
+ *
+ *	Designed to free unused ata_queued_cmd object
+ *	in case something prevents using it.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ */
+void ata_qc_free(struct ata_queued_cmd *qc)
+{
+	qc->flags = 0;
+	if (ata_tag_valid(qc->tag))
+		qc->tag = ATA_TAG_POISON;
+}
+
+void __ata_qc_complete(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap;
+	struct ata_link *link;
+
+	if (WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE)))
+		return;
+
+	ap = qc->ap;
+	link = qc->dev->link;
+
+	if (likely(qc->flags & ATA_QCFLAG_DMAMAP))
+		ata_sg_clean(qc);
+
+	/* command should be marked inactive atomically with qc completion */
+	if (ata_is_ncq(qc->tf.protocol)) {
+		link->sactive &= ~(1 << qc->hw_tag);
+		if (!link->sactive)
+			ap->nr_active_links--;
+	} else {
+		link->active_tag = ATA_TAG_POISON;
+		ap->nr_active_links--;
+	}
+
+	/* clear exclusive status */
+	if (unlikely(qc->flags & ATA_QCFLAG_CLEAR_EXCL &&
+		     ap->excl_link == link))
+		ap->excl_link = NULL;
+
+	/*
+	 * Mark qc as inactive to prevent the port interrupt handler from
+	 * completing the command twice later, before the error handler is
+	 * called.
+	 */
+	qc->flags &= ~ATA_QCFLAG_ACTIVE;
+	ap->qc_active &= ~(1ULL << qc->tag);
+
+	/* call completion callback */
+	qc->complete_fn(qc);
+}
+
+static void fill_result_tf(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+
+	/*
+	 * rtf may already be filled (e.g. for successful NCQ commands).
+	 * If that is the case, we have nothing to do.
+	 */
+	if (qc->flags & ATA_QCFLAG_RTF_FILLED)
+		return;
+
+	qc->result_tf.flags = qc->tf.flags;
+	ap->ops->qc_fill_rtf(qc);
+	qc->flags |= ATA_QCFLAG_RTF_FILLED;
+}
+
+static void ata_verify_xfer(struct ata_queued_cmd *qc)
+{
+	struct ata_device *dev = qc->dev;
+
+	if (!ata_is_data(qc->tf.protocol))
+		return;
+
+	if ((dev->mwdma_mask || dev->udma_mask) && ata_is_pio(qc->tf.protocol))
+		return;
+
+	dev->flags &= ~ATA_DFLAG_DUBIOUS_XFER;
+}
+
+/**
+ *	ata_qc_complete - Complete an active ATA command
+ *	@qc: Command to complete
+ *
+ *	Indicate to the mid and upper layers that an ATA command has
+ *	completed, with either an ok or not-ok status.
+ *
+ *	Refrain from calling this function multiple times when
+ *	successfully completing multiple NCQ commands.
+ *	ata_qc_complete_multiple() should be used instead, which will
+ *	properly update IRQ expect state.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ */
+void ata_qc_complete(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	struct ata_device *dev = qc->dev;
+	struct ata_eh_info *ehi = &dev->link->eh_info;
+
+	/* Trigger the LED (if available) */
+	ledtrig_disk_activity(!!(qc->tf.flags & ATA_TFLAG_WRITE));
+
+	/*
+	 * In order to synchronize EH with the regular execution path, a qc that
+	 * is owned by EH is marked with ATA_QCFLAG_EH.
+	 *
+	 * The normal execution path is responsible for not accessing a qc owned
+	 * by EH.  libata core enforces the rule by returning NULL from
+	 * ata_qc_from_tag() for qcs owned by EH.
+	 */
+	if (unlikely(qc->err_mask))
+		qc->flags |= ATA_QCFLAG_EH;
+
+	/*
+	 * Finish internal commands without any further processing and always
+	 * with the result TF filled.
+	 */
+	if (unlikely(ata_tag_internal(qc->tag))) {
+		fill_result_tf(qc);
+		trace_ata_qc_complete_internal(qc);
+		__ata_qc_complete(qc);
+		return;
+	}
+
+	/* Non-internal qc has failed.  Fill the result TF and summon EH. */
+	if (unlikely(qc->flags & ATA_QCFLAG_EH)) {
+		fill_result_tf(qc);
+		trace_ata_qc_complete_failed(qc);
+		ata_qc_schedule_eh(qc);
+		return;
+	}
+
+	WARN_ON_ONCE(ata_port_is_frozen(ap));
+
+	/* read result TF if requested */
+	if (qc->flags & ATA_QCFLAG_RESULT_TF)
+		fill_result_tf(qc);
+
+	trace_ata_qc_complete_done(qc);
+
+	/*
+	 * For CDL commands that completed without an error, check if we have
+	 * sense data (ATA_SENSE is set). If we do, then the command may have
+	 * been aborted by the device due to a limit timeout using the policy
+	 * 0xD. For these commands, invoke EH to get the command sense data.
+	 */
+	if (qc->flags & ATA_QCFLAG_HAS_CDL &&
+	    qc->result_tf.status & ATA_SENSE) {
+		/*
+		 * Tell SCSI EH to not overwrite scmd->result even if this
+		 * command is finished with result SAM_STAT_GOOD.
+		 */
+		qc->scsicmd->flags |= SCMD_FORCE_EH_SUCCESS;
+		qc->flags |= ATA_QCFLAG_EH_SUCCESS_CMD;
+		ehi->dev_action[dev->devno] |= ATA_EH_GET_SUCCESS_SENSE;
+
+		/*
+		 * set pending so that ata_qc_schedule_eh() does not trigger
+		 * fast drain, and freeze the port.
+		 */
+		ap->pflags |= ATA_PFLAG_EH_PENDING;
+		ata_qc_schedule_eh(qc);
+		return;
+	}
+
+	/* Some commands need post-processing after successful completion. */
+	switch (qc->tf.command) {
+	case ATA_CMD_SET_FEATURES:
+		if (qc->tf.feature != SETFEATURES_WC_ON &&
+		    qc->tf.feature != SETFEATURES_WC_OFF &&
+		    qc->tf.feature != SETFEATURES_RA_ON &&
+		    qc->tf.feature != SETFEATURES_RA_OFF)
+			break;
+		fallthrough;
+	case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */
+	case ATA_CMD_SET_MULTI: /* multi_count changed */
+		/* revalidate device */
+		ehi->dev_action[dev->devno] |= ATA_EH_REVALIDATE;
+		ata_port_schedule_eh(ap);
+		break;
+
+	case ATA_CMD_SLEEP:
+		dev->flags |= ATA_DFLAG_SLEEPING;
+		break;
+	}
+
+	if (unlikely(dev->flags & ATA_DFLAG_DUBIOUS_XFER))
+		ata_verify_xfer(qc);
+
+	__ata_qc_complete(qc);
+}
+EXPORT_SYMBOL_GPL(ata_qc_complete);
+
+/**
+ *	ata_qc_get_active - get bitmask of active qcs
+ *	@ap: port in question
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ *
+ *	RETURNS:
+ *	Bitmask of active qcs
+ */
+u64 ata_qc_get_active(struct ata_port *ap)
+{
+	u64 qc_active = ap->qc_active;
+
+	/* ATA_TAG_INTERNAL is sent to hw as tag 0 */
+	if (qc_active & (1ULL << ATA_TAG_INTERNAL)) {
+		qc_active |= (1 << 0);
+		qc_active &= ~(1ULL << ATA_TAG_INTERNAL);
+	}
+
+	return qc_active;
+}
+EXPORT_SYMBOL_GPL(ata_qc_get_active);
+
+/**
+ *	ata_qc_issue - issue taskfile to device
+ *	@qc: command to issue to device
+ *
+ *	Prepare an ATA command to submission to device.
+ *	This includes mapping the data into a DMA-able
+ *	area, filling in the S/G table, and finally
+ *	writing the taskfile to hardware, starting the command.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ */
+void ata_qc_issue(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	struct ata_link *link = qc->dev->link;
+	u8 prot = qc->tf.protocol;
+
+	/* Make sure only one non-NCQ command is outstanding. */
+	WARN_ON_ONCE(ata_tag_valid(link->active_tag));
+
+	if (ata_is_ncq(prot)) {
+		WARN_ON_ONCE(link->sactive & (1 << qc->hw_tag));
+
+		if (!link->sactive)
+			ap->nr_active_links++;
+		link->sactive |= 1 << qc->hw_tag;
+	} else {
+		WARN_ON_ONCE(link->sactive);
+
+		ap->nr_active_links++;
+		link->active_tag = qc->tag;
+	}
+
+	qc->flags |= ATA_QCFLAG_ACTIVE;
+	ap->qc_active |= 1ULL << qc->tag;
+
+	/*
+	 * We guarantee to LLDs that they will have at least one
+	 * non-zero sg if the command is a data command.
+	 */
+	if (ata_is_data(prot) && (!qc->sg || !qc->n_elem || !qc->nbytes))
+		goto sys_err;
+
+	if (ata_is_dma(prot) || (ata_is_pio(prot) &&
+				 (ap->flags & ATA_FLAG_PIO_DMA)))
+		if (ata_sg_setup(qc))
+			goto sys_err;
+
+	/* if device is sleeping, schedule reset and abort the link */
+	if (unlikely(qc->dev->flags & ATA_DFLAG_SLEEPING)) {
+		link->eh_info.action |= ATA_EH_RESET;
+		ata_ehi_push_desc(&link->eh_info, "waking up from sleep");
+		ata_link_abort(link);
+		return;
+	}
+
+	if (ap->ops->qc_prep) {
+		trace_ata_qc_prep(qc);
+		qc->err_mask |= ap->ops->qc_prep(qc);
+		if (unlikely(qc->err_mask))
+			goto err;
+	}
+
+	trace_ata_qc_issue(qc);
+	qc->err_mask |= ap->ops->qc_issue(qc);
+	if (unlikely(qc->err_mask))
+		goto err;
+	return;
+
+sys_err:
+	qc->err_mask |= AC_ERR_SYSTEM;
+err:
+	ata_qc_complete(qc);
+}
+
+/**
+ *	ata_phys_link_online - test whether the given link is online
+ *	@link: ATA link to test
+ *
+ *	Test whether @link is online.  Note that this function returns
+ *	0 if online status of @link cannot be obtained, so
+ *	ata_link_online(link) != !ata_link_offline(link).
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	True if the port online status is available and online.
+ */
+bool ata_phys_link_online(struct ata_link *link)
+{
+	u32 sstatus;
+
+	if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 &&
+	    ata_sstatus_online(sstatus))
+		return true;
+	return false;
+}
+
+/**
+ *	ata_phys_link_offline - test whether the given link is offline
+ *	@link: ATA link to test
+ *
+ *	Test whether @link is offline.  Note that this function
+ *	returns 0 if offline status of @link cannot be obtained, so
+ *	ata_link_online(link) != !ata_link_offline(link).
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	True if the port offline status is available and offline.
+ */
+bool ata_phys_link_offline(struct ata_link *link)
+{
+	u32 sstatus;
+
+	if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 &&
+	    !ata_sstatus_online(sstatus))
+		return true;
+	return false;
+}
+
+/**
+ *	ata_link_online - test whether the given link is online
+ *	@link: ATA link to test
+ *
+ *	Test whether @link is online.  This is identical to
+ *	ata_phys_link_online() when there's no slave link.  When
+ *	there's a slave link, this function should only be called on
+ *	the master link and will return true if any of M/S links is
+ *	online.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	True if the port online status is available and online.
+ */
+bool ata_link_online(struct ata_link *link)
+{
+	struct ata_link *slave = link->ap->slave_link;
+
+	WARN_ON(link == slave);	/* shouldn't be called on slave link */
+
+	return ata_phys_link_online(link) ||
+		(slave && ata_phys_link_online(slave));
+}
+EXPORT_SYMBOL_GPL(ata_link_online);
+
+/**
+ *	ata_link_offline - test whether the given link is offline
+ *	@link: ATA link to test
+ *
+ *	Test whether @link is offline.  This is identical to
+ *	ata_phys_link_offline() when there's no slave link.  When
+ *	there's a slave link, this function should only be called on
+ *	the master link and will return true if both M/S links are
+ *	offline.
+ *
+ *	LOCKING:
+ *	None.
+ *
+ *	RETURNS:
+ *	True if the port offline status is available and offline.
+ */
+bool ata_link_offline(struct ata_link *link)
+{
+	struct ata_link *slave = link->ap->slave_link;
+
+	WARN_ON(link == slave);	/* shouldn't be called on slave link */
+
+	return ata_phys_link_offline(link) &&
+		(!slave || ata_phys_link_offline(slave));
+}
+EXPORT_SYMBOL_GPL(ata_link_offline);
+
+#ifdef CONFIG_PM
+static void ata_port_request_pm(struct ata_port *ap, pm_message_t mesg,
+				unsigned int action, unsigned int ehi_flags,
+				bool async)
+{
+	struct ata_link *link;
+	unsigned long flags;
+
+	spin_lock_irqsave(ap->lock, flags);
+
+	/*
+	 * A previous PM operation might still be in progress. Wait for
+	 * ATA_PFLAG_PM_PENDING to clear.
+	 */
+	if (ap->pflags & ATA_PFLAG_PM_PENDING) {
+		spin_unlock_irqrestore(ap->lock, flags);
+		ata_port_wait_eh(ap);
+		spin_lock_irqsave(ap->lock, flags);
+	}
+
+	/* Request PM operation to EH */
+	ap->pm_mesg = mesg;
+	ap->pflags |= ATA_PFLAG_PM_PENDING;
+	ata_for_each_link(link, ap, HOST_FIRST) {
+		link->eh_info.action |= action;
+		link->eh_info.flags |= ehi_flags;
+	}
+
+	ata_port_schedule_eh(ap);
+
+	spin_unlock_irqrestore(ap->lock, flags);
+
+	if (!async)
+		ata_port_wait_eh(ap);
+}
+
+static void ata_port_suspend(struct ata_port *ap, pm_message_t mesg,
+			     bool async)
+{
+	/*
+	 * We are about to suspend the port, so we do not care about
+	 * scsi_rescan_device() calls scheduled by previous resume operations.
+	 * The next resume will schedule the rescan again. So cancel any rescan
+	 * that is not done yet.
+	 */
+	cancel_delayed_work_sync(&ap->scsi_rescan_task);
+
+	/*
+	 * On some hardware, device fails to respond after spun down for
+	 * suspend. As the device will not be used until being resumed, we
+	 * do not need to touch the device. Ask EH to skip the usual stuff
+	 * and proceed directly to suspend.
+	 *
+	 * http://thread.gmane.org/gmane.linux.ide/46764
+	 */
+	ata_port_request_pm(ap, mesg, 0,
+			    ATA_EHI_QUIET | ATA_EHI_NO_AUTOPSY |
+			    ATA_EHI_NO_RECOVERY,
+			    async);
+}
+
+static int ata_port_pm_suspend(struct device *dev)
+{
+	struct ata_port *ap = to_ata_port(dev);
+
+	if (pm_runtime_suspended(dev))
+		return 0;
+
+	ata_port_suspend(ap, PMSG_SUSPEND, false);
+	return 0;
+}
+
+static int ata_port_pm_freeze(struct device *dev)
+{
+	struct ata_port *ap = to_ata_port(dev);
+
+	if (pm_runtime_suspended(dev))
+		return 0;
+
+	ata_port_suspend(ap, PMSG_FREEZE, false);
+	return 0;
+}
+
+static int ata_port_pm_poweroff(struct device *dev)
+{
+	if (!pm_runtime_suspended(dev))
+		ata_port_suspend(to_ata_port(dev), PMSG_HIBERNATE, false);
+	return 0;
+}
+
+static void ata_port_resume(struct ata_port *ap, pm_message_t mesg,
+			    bool async)
+{
+	ata_port_request_pm(ap, mesg, ATA_EH_RESET,
+			    ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
+			    async);
+}
+
+static int ata_port_pm_resume(struct device *dev)
+{
+	if (!pm_runtime_suspended(dev))
+		ata_port_resume(to_ata_port(dev), PMSG_RESUME, true);
+	return 0;
+}
+
+/*
+ * For ODDs, the upper layer will poll for media change every few seconds,
+ * which will make it enter and leave suspend state every few seconds. And
+ * as each suspend will cause a hard/soft reset, the gain of runtime suspend
+ * is very little and the ODD may malfunction after constantly being reset.
+ * So the idle callback here will not proceed to suspend if a non-ZPODD capable
+ * ODD is attached to the port.
+ */
+static int ata_port_runtime_idle(struct device *dev)
+{
+	struct ata_port *ap = to_ata_port(dev);
+	struct ata_link *link;
+	struct ata_device *adev;
+
+	ata_for_each_link(link, ap, HOST_FIRST) {
+		ata_for_each_dev(adev, link, ENABLED)
+			if (adev->class == ATA_DEV_ATAPI &&
+			    !zpodd_dev_enabled(adev))
+				return -EBUSY;
+	}
+
+	return 0;
+}
+
+static int ata_port_runtime_suspend(struct device *dev)
+{
+	ata_port_suspend(to_ata_port(dev), PMSG_AUTO_SUSPEND, false);
+	return 0;
+}
+
+static int ata_port_runtime_resume(struct device *dev)
+{
+	ata_port_resume(to_ata_port(dev), PMSG_AUTO_RESUME, false);
+	return 0;
+}
+
+static const struct dev_pm_ops ata_port_pm_ops = {
+	.suspend = ata_port_pm_suspend,
+	.resume = ata_port_pm_resume,
+	.freeze = ata_port_pm_freeze,
+	.thaw = ata_port_pm_resume,
+	.poweroff = ata_port_pm_poweroff,
+	.restore = ata_port_pm_resume,
+
+	.runtime_suspend = ata_port_runtime_suspend,
+	.runtime_resume = ata_port_runtime_resume,
+	.runtime_idle = ata_port_runtime_idle,
+};
+
+/* sas ports don't participate in pm runtime management of ata_ports,
+ * and need to resume ata devices at the domain level, not the per-port
+ * level. sas suspend/resume is async to allow parallel port recovery
+ * since sas has multiple ata_port instances per Scsi_Host.
+ */
+void ata_sas_port_suspend(struct ata_port *ap)
+{
+	ata_port_suspend(ap, PMSG_SUSPEND, true);
+}
+EXPORT_SYMBOL_GPL(ata_sas_port_suspend);
+
+void ata_sas_port_resume(struct ata_port *ap)
+{
+	ata_port_resume(ap, PMSG_RESUME, true);
+}
+EXPORT_SYMBOL_GPL(ata_sas_port_resume);
+
+/**
+ *	ata_host_suspend - suspend host
+ *	@host: host to suspend
+ *	@mesg: PM message
+ *
+ *	Suspend @host.  Actual operation is performed by port suspend.
+ */
+void ata_host_suspend(struct ata_host *host, pm_message_t mesg)
+{
+	host->dev->power.power_state = mesg;
+}
+EXPORT_SYMBOL_GPL(ata_host_suspend);
+
+/**
+ *	ata_host_resume - resume host
+ *	@host: host to resume
+ *
+ *	Resume @host.  Actual operation is performed by port resume.
+ */
+void ata_host_resume(struct ata_host *host)
+{
+	host->dev->power.power_state = PMSG_ON;
+}
+EXPORT_SYMBOL_GPL(ata_host_resume);
+#endif
+
+const struct device_type ata_port_type = {
+	.name = ATA_PORT_TYPE_NAME,
+#ifdef CONFIG_PM
+	.pm = &ata_port_pm_ops,
+#endif
+};
+
+/**
+ *	ata_dev_init - Initialize an ata_device structure
+ *	@dev: Device structure to initialize
+ *
+ *	Initialize @dev in preparation for probing.
+ *
+ *	LOCKING:
+ *	Inherited from caller.
+ */
+void ata_dev_init(struct ata_device *dev)
+{
+	struct ata_link *link = ata_dev_phys_link(dev);
+	struct ata_port *ap = link->ap;
+	unsigned long flags;
+
+	/* SATA spd limit is bound to the attached device, reset together */
+	link->sata_spd_limit = link->hw_sata_spd_limit;
+	link->sata_spd = 0;
+
+	/* High bits of dev->flags are used to record warm plug
+	 * requests which occur asynchronously.  Synchronize using
+	 * host lock.
+	 */
+	spin_lock_irqsave(ap->lock, flags);
+	dev->flags &= ~ATA_DFLAG_INIT_MASK;
+	dev->quirks = 0;
+	spin_unlock_irqrestore(ap->lock, flags);
+
+	memset((void *)dev + ATA_DEVICE_CLEAR_BEGIN, 0,
+	       ATA_DEVICE_CLEAR_END - ATA_DEVICE_CLEAR_BEGIN);
+	dev->pio_mask = UINT_MAX;
+	dev->mwdma_mask = UINT_MAX;
+	dev->udma_mask = UINT_MAX;
+}
+
+/**
+ *	ata_link_init - Initialize an ata_link structure
+ *	@ap: ATA port link is attached to
+ *	@link: Link structure to initialize
+ *	@pmp: Port multiplier port number
+ *
+ *	Initialize @link.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ */
+void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp)
+{
+	int i;
+
+	/* clear everything except for devices */
+	memset((void *)link + ATA_LINK_CLEAR_BEGIN, 0,
+	       ATA_LINK_CLEAR_END - ATA_LINK_CLEAR_BEGIN);
+
+	link->ap = ap;
+	link->pmp = pmp;
+	link->active_tag = ATA_TAG_POISON;
+	link->hw_sata_spd_limit = UINT_MAX;
+
+	/* can't use iterator, ap isn't initialized yet */
+	for (i = 0; i < ATA_MAX_DEVICES; i++) {
+		struct ata_device *dev = &link->device[i];
+
+		dev->link = link;
+		dev->devno = dev - link->device;
+#ifdef CONFIG_ATA_ACPI
+		dev->gtf_filter = ata_acpi_gtf_filter;
+#endif
+		ata_dev_init(dev);
+	}
+}
+
+/**
+ *	sata_link_init_spd - Initialize link->sata_spd_limit
+ *	@link: Link to configure sata_spd_limit for
+ *
+ *	Initialize ``link->[hw_]sata_spd_limit`` to the currently
+ *	configured value.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ *
+ *	RETURNS:
+ *	0 on success, -errno on failure.
+ */
+int sata_link_init_spd(struct ata_link *link)
+{
+	u8 spd;
+	int rc;
+
+	rc = sata_scr_read(link, SCR_CONTROL, &link->saved_scontrol);
+	if (rc)
+		return rc;
+
+	spd = (link->saved_scontrol >> 4) & 0xf;
+	if (spd)
+		link->hw_sata_spd_limit &= (1 << spd) - 1;
+
+	ata_force_link_limits(link);
+
+	link->sata_spd_limit = link->hw_sata_spd_limit;
+
+	return 0;
+}
+
+/**
+ *	ata_port_alloc - allocate and initialize basic ATA port resources
+ *	@host: ATA host this allocated port belongs to
+ *
+ *	Allocate and initialize basic ATA port resources.
+ *
+ *	RETURNS:
+ *	Allocate ATA port on success, NULL on failure.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ */
+struct ata_port *ata_port_alloc(struct ata_host *host)
+{
+	struct ata_port *ap;
+	int id;
+
+	ap = kzalloc(sizeof(*ap), GFP_KERNEL);
+	if (!ap)
+		return NULL;
+
+	ap->pflags |= ATA_PFLAG_INITIALIZING | ATA_PFLAG_FROZEN;
+	ap->lock = &host->lock;
+	id = ida_alloc_min(&ata_ida, 1, GFP_KERNEL);
+	if (id < 0) {
+		kfree(ap);
+		return NULL;
+	}
+	ap->print_id = id;
+	ap->host = host;
+	ap->dev = host->dev;
+
+	mutex_init(&ap->scsi_scan_mutex);
+	INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug);
+	INIT_DELAYED_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan);
+	INIT_LIST_HEAD(&ap->eh_done_q);
+	init_waitqueue_head(&ap->eh_wait_q);
+	init_completion(&ap->park_req_pending);
+	timer_setup(&ap->fastdrain_timer, ata_eh_fastdrain_timerfn,
+		    TIMER_DEFERRABLE);
+
+	ap->cbl = ATA_CBL_NONE;
+
+	ata_link_init(ap, &ap->link, 0);
+
+#ifdef ATA_IRQ_TRAP
+	ap->stats.unhandled_irq = 1;
+	ap->stats.idle_irq = 1;
+#endif
+	ata_sff_port_init(ap);
+
+	return ap;
+}
+EXPORT_SYMBOL_GPL(ata_port_alloc);
+
+void ata_port_free(struct ata_port *ap)
+{
+	if (!ap)
+		return;
+
+	kfree(ap->pmp_link);
+	kfree(ap->slave_link);
+	ida_free(&ata_ida, ap->print_id);
+	kfree(ap);
+}
+EXPORT_SYMBOL_GPL(ata_port_free);
+
+static void ata_devres_release(struct device *gendev, void *res)
+{
+	struct ata_host *host = dev_get_drvdata(gendev);
+	int i;
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+
+		if (!ap)
+			continue;
+
+		if (ap->scsi_host)
+			scsi_host_put(ap->scsi_host);
+
+	}
+
+	dev_set_drvdata(gendev, NULL);
+	ata_host_put(host);
+}
+
+static void ata_host_release(struct kref *kref)
+{
+	struct ata_host *host = container_of(kref, struct ata_host, kref);
+	int i;
+
+	for (i = 0; i < host->n_ports; i++) {
+		ata_port_free(host->ports[i]);
+		host->ports[i] = NULL;
+	}
+	kfree(host);
+}
+
+void ata_host_get(struct ata_host *host)
+{
+	kref_get(&host->kref);
+}
+
+void ata_host_put(struct ata_host *host)
+{
+	kref_put(&host->kref, ata_host_release);
+}
+EXPORT_SYMBOL_GPL(ata_host_put);
+
+/**
+ *	ata_host_alloc - allocate and init basic ATA host resources
+ *	@dev: generic device this host is associated with
+ *	@n_ports: the number of ATA ports associated with this host
+ *
+ *	Allocate and initialize basic ATA host resources.  LLD calls
+ *	this function to allocate a host, initializes it fully and
+ *	attaches it using ata_host_register().
+ *
+ *	RETURNS:
+ *	Allocate ATA host on success, NULL on failure.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ */
+struct ata_host *ata_host_alloc(struct device *dev, int n_ports)
+{
+	struct ata_host *host;
+	size_t sz;
+	int i;
+	void *dr;
+
+	/* alloc a container for our list of ATA ports (buses) */
+	sz = sizeof(struct ata_host) + n_ports * sizeof(void *);
+	host = kzalloc(sz, GFP_KERNEL);
+	if (!host)
+		return NULL;
+
+	if (!devres_open_group(dev, NULL, GFP_KERNEL)) {
+		kfree(host);
+		return NULL;
+	}
+
+	dr = devres_alloc(ata_devres_release, 0, GFP_KERNEL);
+	if (!dr) {
+		kfree(host);
+		goto err_out;
+	}
+
+	devres_add(dev, dr);
+	dev_set_drvdata(dev, host);
+
+	spin_lock_init(&host->lock);
+	mutex_init(&host->eh_mutex);
+	host->dev = dev;
+	host->n_ports = n_ports;
+	kref_init(&host->kref);
+
+	/* allocate ports bound to this host */
+	for (i = 0; i < n_ports; i++) {
+		struct ata_port *ap;
+
+		ap = ata_port_alloc(host);
+		if (!ap)
+			goto err_out;
+
+		ap->port_no = i;
+		host->ports[i] = ap;
+	}
+
+	devres_remove_group(dev, NULL);
+	return host;
+
+ err_out:
+	devres_release_group(dev, NULL);
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(ata_host_alloc);
+
+/**
+ *	ata_host_alloc_pinfo - alloc host and init with port_info array
+ *	@dev: generic device this host is associated with
+ *	@ppi: array of ATA port_info to initialize host with
+ *	@n_ports: number of ATA ports attached to this host
+ *
+ *	Allocate ATA host and initialize with info from @ppi.  If NULL
+ *	terminated, @ppi may contain fewer entries than @n_ports.  The
+ *	last entry will be used for the remaining ports.
+ *
+ *	RETURNS:
+ *	Allocate ATA host on success, NULL on failure.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ */
+struct ata_host *ata_host_alloc_pinfo(struct device *dev,
+				      const struct ata_port_info * const * ppi,
+				      int n_ports)
+{
+	const struct ata_port_info *pi = &ata_dummy_port_info;
+	struct ata_host *host;
+	int i, j;
+
+	host = ata_host_alloc(dev, n_ports);
+	if (!host)
+		return NULL;
+
+	for (i = 0, j = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+
+		if (ppi[j])
+			pi = ppi[j++];
+
+		ap->pio_mask = pi->pio_mask;
+		ap->mwdma_mask = pi->mwdma_mask;
+		ap->udma_mask = pi->udma_mask;
+		ap->flags |= pi->flags;
+		ap->link.flags |= pi->link_flags;
+		ap->ops = pi->port_ops;
+
+		if (!host->ops && (pi->port_ops != &ata_dummy_port_ops))
+			host->ops = pi->port_ops;
+	}
+
+	return host;
+}
+EXPORT_SYMBOL_GPL(ata_host_alloc_pinfo);
+
+static void ata_host_stop(struct device *gendev, void *res)
+{
+	struct ata_host *host = dev_get_drvdata(gendev);
+	int i;
+
+	WARN_ON(!(host->flags & ATA_HOST_STARTED));
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+
+		if (ap->ops->port_stop)
+			ap->ops->port_stop(ap);
+	}
+
+	if (host->ops->host_stop)
+		host->ops->host_stop(host);
+}
+
+/**
+ *	ata_finalize_port_ops - finalize ata_port_operations
+ *	@ops: ata_port_operations to finalize
+ *
+ *	An ata_port_operations can inherit from another ops and that
+ *	ops can again inherit from another.  This can go on as many
+ *	times as necessary as long as there is no loop in the
+ *	inheritance chain.
+ *
+ *	Ops tables are finalized when the host is started.  NULL or
+ *	unspecified entries are inherited from the closet ancestor
+ *	which has the method and the entry is populated with it.
+ *	After finalization, the ops table directly points to all the
+ *	methods and ->inherits is no longer necessary and cleared.
+ *
+ *	Using ATA_OP_NULL, inheriting ops can force a method to NULL.
+ *
+ *	LOCKING:
+ *	None.
+ */
+static void ata_finalize_port_ops(struct ata_port_operations *ops)
+{
+	static DEFINE_SPINLOCK(lock);
+	const struct ata_port_operations *cur;
+	void **begin = (void **)ops;
+	void **end = (void **)&ops->inherits;
+	void **pp;
+
+	if (!ops || !ops->inherits)
+		return;
+
+	spin_lock(&lock);
+
+	for (cur = ops->inherits; cur; cur = cur->inherits) {
+		void **inherit = (void **)cur;
+
+		for (pp = begin; pp < end; pp++, inherit++)
+			if (!*pp)
+				*pp = *inherit;
+	}
+
+	for (pp = begin; pp < end; pp++)
+		if (IS_ERR(*pp))
+			*pp = NULL;
+
+	ops->inherits = NULL;
+
+	spin_unlock(&lock);
+}
+
+/**
+ *	ata_host_start - start and freeze ports of an ATA host
+ *	@host: ATA host to start ports for
+ *
+ *	Start and then freeze ports of @host.  Started status is
+ *	recorded in host->flags, so this function can be called
+ *	multiple times.  Ports are guaranteed to get started only
+ *	once.  If host->ops is not initialized yet, it is set to the
+ *	first non-dummy port ops.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ *
+ *	RETURNS:
+ *	0 if all ports are started successfully, -errno otherwise.
+ */
+int ata_host_start(struct ata_host *host)
+{
+	int have_stop = 0;
+	void *start_dr = NULL;
+	int i, rc;
+
+	if (host->flags & ATA_HOST_STARTED)
+		return 0;
+
+	ata_finalize_port_ops(host->ops);
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+
+		ata_finalize_port_ops(ap->ops);
+
+		if (!host->ops && !ata_port_is_dummy(ap))
+			host->ops = ap->ops;
+
+		if (ap->ops->port_stop)
+			have_stop = 1;
+	}
+
+	if (host->ops && host->ops->host_stop)
+		have_stop = 1;
+
+	if (have_stop) {
+		start_dr = devres_alloc(ata_host_stop, 0, GFP_KERNEL);
+		if (!start_dr)
+			return -ENOMEM;
+	}
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+
+		if (ap->ops->port_start) {
+			rc = ap->ops->port_start(ap);
+			if (rc) {
+				if (rc != -ENODEV)
+					dev_err(host->dev,
+						"failed to start port %d (errno=%d)\n",
+						i, rc);
+				goto err_out;
+			}
+		}
+		ata_eh_freeze_port(ap);
+	}
+
+	if (start_dr)
+		devres_add(host->dev, start_dr);
+	host->flags |= ATA_HOST_STARTED;
+	return 0;
+
+ err_out:
+	while (--i >= 0) {
+		struct ata_port *ap = host->ports[i];
+
+		if (ap->ops->port_stop)
+			ap->ops->port_stop(ap);
+	}
+	devres_free(start_dr);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(ata_host_start);
+
+/**
+ *	ata_host_init - Initialize a host struct for sas (ipr, libsas)
+ *	@host:	host to initialize
+ *	@dev:	device host is attached to
+ *	@ops:	port_ops
+ *
+ */
+void ata_host_init(struct ata_host *host, struct device *dev,
+		   struct ata_port_operations *ops)
+{
+	spin_lock_init(&host->lock);
+	mutex_init(&host->eh_mutex);
+	host->n_tags = ATA_MAX_QUEUE;
+	host->dev = dev;
+	host->ops = ops;
+	kref_init(&host->kref);
+}
+EXPORT_SYMBOL_GPL(ata_host_init);
+
+void ata_port_probe(struct ata_port *ap)
+{
+	struct ata_eh_info *ehi = &ap->link.eh_info;
+	unsigned long flags;
+
+	/* kick EH for boot probing */
+	spin_lock_irqsave(ap->lock, flags);
+
+	ehi->probe_mask |= ATA_ALL_DEVICES;
+	ehi->action |= ATA_EH_RESET;
+	ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;
+
+	ap->pflags &= ~ATA_PFLAG_INITIALIZING;
+	ap->pflags |= ATA_PFLAG_LOADING;
+	ata_port_schedule_eh(ap);
+
+	spin_unlock_irqrestore(ap->lock, flags);
+}
+EXPORT_SYMBOL_GPL(ata_port_probe);
+
+static void async_port_probe(void *data, async_cookie_t cookie)
+{
+	struct ata_port *ap = data;
+
+	/*
+	 * If we're not allowed to scan this host in parallel,
+	 * we need to wait until all previous scans have completed
+	 * before going further.
+	 * Jeff Garzik says this is only within a controller, so we
+	 * don't need to wait for port 0, only for later ports.
+	 */
+	if (!(ap->host->flags & ATA_HOST_PARALLEL_SCAN) && ap->port_no != 0)
+		async_synchronize_cookie(cookie);
+
+	ata_port_probe(ap);
+	ata_port_wait_eh(ap);
+
+	/* in order to keep device order, we need to synchronize at this point */
+	async_synchronize_cookie(cookie);
+
+	ata_scsi_scan_host(ap, 1);
+}
+
+/**
+ *	ata_host_register - register initialized ATA host
+ *	@host: ATA host to register
+ *	@sht: template for SCSI host
+ *
+ *	Register initialized ATA host.  @host is allocated using
+ *	ata_host_alloc() and fully initialized by LLD.  This function
+ *	starts ports, registers @host with ATA and SCSI layers and
+ *	probe registered devices.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ *
+ *	RETURNS:
+ *	0 on success, -errno otherwise.
+ */
+int ata_host_register(struct ata_host *host, const struct scsi_host_template *sht)
+{
+	int i, rc;
+
+	host->n_tags = clamp(sht->can_queue, 1, ATA_MAX_QUEUE);
+
+	/* host must have been started */
+	if (!(host->flags & ATA_HOST_STARTED)) {
+		dev_err(host->dev, "BUG: trying to register unstarted host\n");
+		WARN_ON(1);
+		return -EINVAL;
+	}
+
+	/* Create associated sysfs transport objects  */
+	for (i = 0; i < host->n_ports; i++) {
+		rc = ata_tport_add(host->dev,host->ports[i]);
+		if (rc) {
+			goto err_tadd;
+		}
+	}
+
+	rc = ata_scsi_add_hosts(host, sht);
+	if (rc)
+		goto err_tadd;
+
+	/* set cable, sata_spd_limit and report */
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+		unsigned int xfer_mask;
+
+		/* set SATA cable type if still unset */
+		if (ap->cbl == ATA_CBL_NONE && (ap->flags & ATA_FLAG_SATA))
+			ap->cbl = ATA_CBL_SATA;
+
+		/* init sata_spd_limit to the current value */
+		sata_link_init_spd(&ap->link);
+		if (ap->slave_link)
+			sata_link_init_spd(ap->slave_link);
+
+		/* print per-port info to dmesg */
+		xfer_mask = ata_pack_xfermask(ap->pio_mask, ap->mwdma_mask,
+					      ap->udma_mask);
+
+		if (!ata_port_is_dummy(ap)) {
+			ata_port_info(ap, "%cATA max %s %s\n",
+				      (ap->flags & ATA_FLAG_SATA) ? 'S' : 'P',
+				      ata_mode_string(xfer_mask),
+				      ap->link.eh_info.desc);
+			ata_ehi_clear_desc(&ap->link.eh_info);
+		} else
+			ata_port_info(ap, "DUMMY\n");
+	}
+
+	/* perform each probe asynchronously */
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+		ap->cookie = async_schedule(async_port_probe, ap);
+	}
+
+	return 0;
+
+ err_tadd:
+	while (--i >= 0) {
+		ata_tport_delete(host->ports[i]);
+	}
+	return rc;
+
+}
+EXPORT_SYMBOL_GPL(ata_host_register);
+
+/**
+ *	ata_host_activate - start host, request IRQ and register it
+ *	@host: target ATA host
+ *	@irq: IRQ to request
+ *	@irq_handler: irq_handler used when requesting IRQ
+ *	@irq_flags: irq_flags used when requesting IRQ
+ *	@sht: scsi_host_template to use when registering the host
+ *
+ *	After allocating an ATA host and initializing it, most libata
+ *	LLDs perform three steps to activate the host - start host,
+ *	request IRQ and register it.  This helper takes necessary
+ *	arguments and performs the three steps in one go.
+ *
+ *	An invalid IRQ skips the IRQ registration and expects the host to
+ *	have set polling mode on the port. In this case, @irq_handler
+ *	should be NULL.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ *
+ *	RETURNS:
+ *	0 on success, -errno otherwise.
+ */
+int ata_host_activate(struct ata_host *host, int irq,
+		      irq_handler_t irq_handler, unsigned long irq_flags,
+		      const struct scsi_host_template *sht)
+{
+	int i, rc;
+	char *irq_desc;
+
+	rc = ata_host_start(host);
+	if (rc)
+		return rc;
+
+	/* Special case for polling mode */
+	if (!irq) {
+		WARN_ON(irq_handler);
+		return ata_host_register(host, sht);
+	}
+
+	irq_desc = devm_kasprintf(host->dev, GFP_KERNEL, "%s[%s]",
+				  dev_driver_string(host->dev),
+				  dev_name(host->dev));
+	if (!irq_desc)
+		return -ENOMEM;
+
+	rc = devm_request_irq(host->dev, irq, irq_handler, irq_flags,
+			      irq_desc, host);
+	if (rc)
+		return rc;
+
+	for (i = 0; i < host->n_ports; i++)
+		ata_port_desc_misc(host->ports[i], irq);
+
+	rc = ata_host_register(host, sht);
+	/* if failed, just free the IRQ and leave ports alone */
+	if (rc)
+		devm_free_irq(host->dev, irq, host);
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(ata_host_activate);
+
+/**
+ *	ata_dev_free_resources - Free a device resources
+ *	@dev: Target ATA device
+ *
+ *	Free resources allocated to support a device features.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ */
+void ata_dev_free_resources(struct ata_device *dev)
+{
+	if (zpodd_dev_enabled(dev))
+		zpodd_exit(dev);
+
+	ata_dev_cleanup_cdl_resources(dev);
+}
+
+/**
+ *	ata_port_detach - Detach ATA port in preparation of device removal
+ *	@ap: ATA port to be detached
+ *
+ *	Detach all ATA devices and the associated SCSI devices of @ap;
+ *	then, remove the associated SCSI host.  @ap is guaranteed to
+ *	be quiescent on return from this function.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ */
+static void ata_port_detach(struct ata_port *ap)
+{
+	unsigned long flags;
+	struct ata_link *link;
+	struct ata_device *dev;
+
+	/* Ensure ata_port probe has completed */
+	async_synchronize_cookie(ap->cookie + 1);
+
+	/* Wait for any ongoing EH */
+	ata_port_wait_eh(ap);
+
+	mutex_lock(&ap->scsi_scan_mutex);
+	spin_lock_irqsave(ap->lock, flags);
+
+	/* Remove scsi devices */
+	ata_for_each_link(link, ap, HOST_FIRST) {
+		ata_for_each_dev(dev, link, ALL) {
+			if (dev->sdev) {
+				spin_unlock_irqrestore(ap->lock, flags);
+				scsi_remove_device(dev->sdev);
+				spin_lock_irqsave(ap->lock, flags);
+				dev->sdev = NULL;
+			}
+		}
+	}
+
+	/* Tell EH to disable all devices */
+	ap->pflags |= ATA_PFLAG_UNLOADING;
+	ata_port_schedule_eh(ap);
+
+	spin_unlock_irqrestore(ap->lock, flags);
+	mutex_unlock(&ap->scsi_scan_mutex);
+
+	/* wait till EH commits suicide */
+	ata_port_wait_eh(ap);
+
+	/* it better be dead now */
+	WARN_ON(!(ap->pflags & ATA_PFLAG_UNLOADED));
+
+	cancel_delayed_work_sync(&ap->hotplug_task);
+	cancel_delayed_work_sync(&ap->scsi_rescan_task);
+
+	/* Delete port multiplier link transport devices */
+	if (ap->pmp_link) {
+		int i;
+
+		for (i = 0; i < SATA_PMP_MAX_PORTS; i++)
+			ata_tlink_delete(&ap->pmp_link[i]);
+	}
+
+	/* Remove the associated SCSI host */
+	scsi_remove_host(ap->scsi_host);
+	ata_tport_delete(ap);
+}
+
+/**
+ *	ata_host_detach - Detach all ports of an ATA host
+ *	@host: Host to detach
+ *
+ *	Detach all ports of @host.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep).
+ */
+void ata_host_detach(struct ata_host *host)
+{
+	int i;
+
+	for (i = 0; i < host->n_ports; i++)
+		ata_port_detach(host->ports[i]);
+
+	/* the host is dead now, dissociate ACPI */
+	ata_acpi_dissociate(host);
+}
+EXPORT_SYMBOL_GPL(ata_host_detach);
+
+#ifdef CONFIG_PCI
+
+/**
+ *	ata_pci_remove_one - PCI layer callback for device removal
+ *	@pdev: PCI device that was removed
+ *
+ *	PCI layer indicates to libata via this hook that hot-unplug or
+ *	module unload event has occurred.  Detach all ports.  Resource
+ *	release is handled via devres.
+ *
+ *	LOCKING:
+ *	Inherited from PCI layer (may sleep).
+ */
+void ata_pci_remove_one(struct pci_dev *pdev)
+{
+	struct ata_host *host = pci_get_drvdata(pdev);
+
+	ata_host_detach(host);
+}
+EXPORT_SYMBOL_GPL(ata_pci_remove_one);
+
+void ata_pci_shutdown_one(struct pci_dev *pdev)
+{
+	struct ata_host *host = pci_get_drvdata(pdev);
+	int i;
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+
+		ap->pflags |= ATA_PFLAG_FROZEN;
+
+		/* Disable port interrupts */
+		if (ap->ops->freeze)
+			ap->ops->freeze(ap);
+
+		/* Stop the port DMA engines */
+		if (ap->ops->port_stop)
+			ap->ops->port_stop(ap);
+	}
+}
+EXPORT_SYMBOL_GPL(ata_pci_shutdown_one);
+
+/* move to PCI subsystem */
+int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits)
+{
+	unsigned long tmp = 0;
+
+	switch (bits->width) {
+	case 1: {
+		u8 tmp8 = 0;
+		pci_read_config_byte(pdev, bits->reg, &tmp8);
+		tmp = tmp8;
+		break;
+	}
+	case 2: {
+		u16 tmp16 = 0;
+		pci_read_config_word(pdev, bits->reg, &tmp16);
+		tmp = tmp16;
+		break;
+	}
+	case 4: {
+		u32 tmp32 = 0;
+		pci_read_config_dword(pdev, bits->reg, &tmp32);
+		tmp = tmp32;
+		break;
+	}
+
+	default:
+		return -EINVAL;
+	}
+
+	tmp &= bits->mask;
+
+	return (tmp == bits->val) ? 1 : 0;
+}
+EXPORT_SYMBOL_GPL(pci_test_config_bits);
+
+#ifdef CONFIG_PM
+void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg)
+{
+	pci_save_state(pdev);
+	pci_disable_device(pdev);
+
+	if (mesg.event & PM_EVENT_SLEEP)
+		pci_set_power_state(pdev, PCI_D3hot);
+}
+EXPORT_SYMBOL_GPL(ata_pci_device_do_suspend);
+
+int ata_pci_device_do_resume(struct pci_dev *pdev)
+{
+	int rc;
+
+	pci_set_power_state(pdev, PCI_D0);
+	pci_restore_state(pdev);
+
+	rc = pcim_enable_device(pdev);
+	if (rc) {
+		dev_err(&pdev->dev,
+			"failed to enable device after resume (%d)\n", rc);
+		return rc;
+	}
+
+	pci_set_master(pdev);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ata_pci_device_do_resume);
+
+int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
+{
+	struct ata_host *host = pci_get_drvdata(pdev);
+
+	ata_host_suspend(host, mesg);
+
+	ata_pci_device_do_suspend(pdev, mesg);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ata_pci_device_suspend);
+
+int ata_pci_device_resume(struct pci_dev *pdev)
+{
+	struct ata_host *host = pci_get_drvdata(pdev);
+	int rc;
+
+	rc = ata_pci_device_do_resume(pdev);
+	if (rc == 0)
+		ata_host_resume(host);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(ata_pci_device_resume);
+#endif /* CONFIG_PM */
+#endif /* CONFIG_PCI */
+
+/**
+ *	ata_platform_remove_one - Platform layer callback for device removal
+ *	@pdev: Platform device that was removed
+ *
+ *	Platform layer indicates to libata via this hook that hot-unplug or
+ *	module unload event has occurred.  Detach all ports.  Resource
+ *	release is handled via devres.
+ *
+ *	LOCKING:
+ *	Inherited from platform layer (may sleep).
+ */
+void ata_platform_remove_one(struct platform_device *pdev)
+{
+	struct ata_host *host = platform_get_drvdata(pdev);
+
+	ata_host_detach(host);
+}
+EXPORT_SYMBOL_GPL(ata_platform_remove_one);
+
+#ifdef CONFIG_ATA_FORCE
+
+#define force_cbl(name, flag)				\
+	{ #name,	.cbl		= (flag) }
+
+#define force_spd_limit(spd, val)			\
+	{ #spd,	.spd_limit		= (val) }
+
+#define force_xfer(mode, shift)				\
+	{ #mode,	.xfer_mask	= (1UL << (shift)) }
+
+#define force_lflag_on(name, flags)			\
+	{ #name,	.lflags_on	= (flags) }
+
+#define force_lflag_onoff(name, flags)			\
+	{ "no" #name,	.lflags_on	= (flags) },	\
+	{ #name,	.lflags_off	= (flags) }
+
+#define force_quirk_on(name, flag)			\
+	{ #name,	.quirk_on	= (flag) }
+
+#define force_quirk_onoff(name, flag)			\
+	{ "no" #name,	.quirk_on	= (flag) },	\
+	{ #name,	.quirk_off	= (flag) }
+
+static const struct ata_force_param force_tbl[] __initconst = {
+	force_cbl(40c,			ATA_CBL_PATA40),
+	force_cbl(80c,			ATA_CBL_PATA80),
+	force_cbl(short40c,		ATA_CBL_PATA40_SHORT),
+	force_cbl(unk,			ATA_CBL_PATA_UNK),
+	force_cbl(ign,			ATA_CBL_PATA_IGN),
+	force_cbl(sata,			ATA_CBL_SATA),
+
+	force_spd_limit(1.5Gbps,	1),
+	force_spd_limit(3.0Gbps,	2),
+
+	force_xfer(pio0,		ATA_SHIFT_PIO + 0),
+	force_xfer(pio1,		ATA_SHIFT_PIO + 1),
+	force_xfer(pio2,		ATA_SHIFT_PIO + 2),
+	force_xfer(pio3,		ATA_SHIFT_PIO + 3),
+	force_xfer(pio4,		ATA_SHIFT_PIO + 4),
+	force_xfer(pio5,		ATA_SHIFT_PIO + 5),
+	force_xfer(pio6,		ATA_SHIFT_PIO + 6),
+	force_xfer(mwdma0,		ATA_SHIFT_MWDMA + 0),
+	force_xfer(mwdma1,		ATA_SHIFT_MWDMA + 1),
+	force_xfer(mwdma2,		ATA_SHIFT_MWDMA + 2),
+	force_xfer(mwdma3,		ATA_SHIFT_MWDMA + 3),
+	force_xfer(mwdma4,		ATA_SHIFT_MWDMA + 4),
+	force_xfer(udma0,		ATA_SHIFT_UDMA + 0),
+	force_xfer(udma16,		ATA_SHIFT_UDMA + 0),
+	force_xfer(udma/16,		ATA_SHIFT_UDMA + 0),
+	force_xfer(udma1,		ATA_SHIFT_UDMA + 1),
+	force_xfer(udma25,		ATA_SHIFT_UDMA + 1),
+	force_xfer(udma/25,		ATA_SHIFT_UDMA + 1),
+	force_xfer(udma2,		ATA_SHIFT_UDMA + 2),
+	force_xfer(udma33,		ATA_SHIFT_UDMA + 2),
+	force_xfer(udma/33,		ATA_SHIFT_UDMA + 2),
+	force_xfer(udma3,		ATA_SHIFT_UDMA + 3),
+	force_xfer(udma44,		ATA_SHIFT_UDMA + 3),
+	force_xfer(udma/44,		ATA_SHIFT_UDMA + 3),
+	force_xfer(udma4,		ATA_SHIFT_UDMA + 4),
+	force_xfer(udma66,		ATA_SHIFT_UDMA + 4),
+	force_xfer(udma/66,		ATA_SHIFT_UDMA + 4),
+	force_xfer(udma5,		ATA_SHIFT_UDMA + 5),
+	force_xfer(udma100,		ATA_SHIFT_UDMA + 5),
+	force_xfer(udma/100,		ATA_SHIFT_UDMA + 5),
+	force_xfer(udma6,		ATA_SHIFT_UDMA + 6),
+	force_xfer(udma133,		ATA_SHIFT_UDMA + 6),
+	force_xfer(udma/133,		ATA_SHIFT_UDMA + 6),
+	force_xfer(udma7,		ATA_SHIFT_UDMA + 7),
+
+	force_lflag_on(nohrst,		ATA_LFLAG_NO_HRST),
+	force_lflag_on(nosrst,		ATA_LFLAG_NO_SRST),
+	force_lflag_on(norst,		ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST),
+	force_lflag_on(rstonce,		ATA_LFLAG_RST_ONCE),
+	force_lflag_onoff(dbdelay,	ATA_LFLAG_NO_DEBOUNCE_DELAY),
+
+	force_quirk_onoff(ncq,		ATA_QUIRK_NONCQ),
+	force_quirk_onoff(ncqtrim,	ATA_QUIRK_NO_NCQ_TRIM),
+	force_quirk_onoff(ncqati,	ATA_QUIRK_NO_NCQ_ON_ATI),
+
+	force_quirk_onoff(trim,		ATA_QUIRK_NOTRIM),
+	force_quirk_on(trim_zero,	ATA_QUIRK_ZERO_AFTER_TRIM),
+	force_quirk_on(max_trim_128m,	ATA_QUIRK_MAX_TRIM_128M),
+
+	force_quirk_onoff(dma,		ATA_QUIRK_NODMA),
+	force_quirk_on(atapi_dmadir,	ATA_QUIRK_ATAPI_DMADIR),
+	force_quirk_on(atapi_mod16_dma,	ATA_QUIRK_ATAPI_MOD16_DMA),
+
+	force_quirk_onoff(dmalog,	ATA_QUIRK_NO_DMA_LOG),
+	force_quirk_onoff(iddevlog,	ATA_QUIRK_NO_ID_DEV_LOG),
+	force_quirk_onoff(logdir,	ATA_QUIRK_NO_LOG_DIR),
+
+	force_quirk_on(max_sec_128,	ATA_QUIRK_MAX_SEC_128),
+	force_quirk_on(max_sec_1024,	ATA_QUIRK_MAX_SEC_1024),
+	force_quirk_on(max_sec_lba48,	ATA_QUIRK_MAX_SEC_LBA48),
+
+	force_quirk_onoff(lpm,		ATA_QUIRK_NOLPM),
+	force_quirk_onoff(setxfer,	ATA_QUIRK_NOSETXFER),
+	force_quirk_on(dump_id,		ATA_QUIRK_DUMP_ID),
+	force_quirk_onoff(fua,		ATA_QUIRK_NO_FUA),
+
+	force_quirk_on(disable,		ATA_QUIRK_DISABLE),
+};
+
+static int __init ata_parse_force_one(char **cur,
+				      struct ata_force_ent *force_ent,
+				      const char **reason)
+{
+	char *start = *cur, *p = *cur;
+	char *id, *val, *endp;
+	const struct ata_force_param *match_fp = NULL;
+	int nr_matches = 0, i;
+
+	/* find where this param ends and update *cur */
+	while (*p != '\0' && *p != ',')
+		p++;
+
+	if (*p == '\0')
+		*cur = p;
+	else
+		*cur = p + 1;
+
+	*p = '\0';
+
+	/* parse */
+	p = strchr(start, ':');
+	if (!p) {
+		val = strstrip(start);
+		goto parse_val;
+	}
+	*p = '\0';
+
+	id = strstrip(start);
+	val = strstrip(p + 1);
+
+	/* parse id */
+	p = strchr(id, '.');
+	if (p) {
+		*p++ = '\0';
+		force_ent->device = simple_strtoul(p, &endp, 10);
+		if (p == endp || *endp != '\0') {
+			*reason = "invalid device";
+			return -EINVAL;
+		}
+	}
+
+	force_ent->port = simple_strtoul(id, &endp, 10);
+	if (id == endp || *endp != '\0') {
+		*reason = "invalid port/link";
+		return -EINVAL;
+	}
+
+ parse_val:
+	/* parse val, allow shortcuts so that both 1.5 and 1.5Gbps work */
+	for (i = 0; i < ARRAY_SIZE(force_tbl); i++) {
+		const struct ata_force_param *fp = &force_tbl[i];
+
+		if (strncasecmp(val, fp->name, strlen(val)))
+			continue;
+
+		nr_matches++;
+		match_fp = fp;
+
+		if (strcasecmp(val, fp->name) == 0) {
+			nr_matches = 1;
+			break;
+		}
+	}
+
+	if (!nr_matches) {
+		*reason = "unknown value";
+		return -EINVAL;
+	}
+	if (nr_matches > 1) {
+		*reason = "ambiguous value";
+		return -EINVAL;
+	}
+
+	force_ent->param = *match_fp;
+
+	return 0;
+}
+
+static void __init ata_parse_force_param(void)
+{
+	int idx = 0, size = 1;
+	int last_port = -1, last_device = -1;
+	char *p, *cur, *next;
+
+	/* Calculate maximum number of params and allocate ata_force_tbl */
+	for (p = ata_force_param_buf; *p; p++)
+		if (*p == ',')
+			size++;
+
+	ata_force_tbl = kcalloc(size, sizeof(ata_force_tbl[0]), GFP_KERNEL);
+	if (!ata_force_tbl) {
+		printk(KERN_WARNING "ata: failed to extend force table, "
+		       "libata.force ignored\n");
+		return;
+	}
+
+	/* parse and populate the table */
+	for (cur = ata_force_param_buf; *cur != '\0'; cur = next) {
+		const char *reason = "";
+		struct ata_force_ent te = { .port = -1, .device = -1 };
+
+		next = cur;
+		if (ata_parse_force_one(&next, &te, &reason)) {
+			printk(KERN_WARNING "ata: failed to parse force "
+			       "parameter \"%s\" (%s)\n",
+			       cur, reason);
+			continue;
+		}
+
+		if (te.port == -1) {
+			te.port = last_port;
+			te.device = last_device;
+		}
+
+		ata_force_tbl[idx++] = te;
+
+		last_port = te.port;
+		last_device = te.device;
+	}
+
+	ata_force_tbl_size = idx;
+}
+
+static void ata_free_force_param(void)
+{
+	kfree(ata_force_tbl);
+}
+#else
+static inline void ata_parse_force_param(void) { }
+static inline void ata_free_force_param(void) { }
+#endif
+
+static int __init ata_init(void)
+{
+	int rc;
+
+	ata_parse_force_param();
+
+	rc = ata_sff_init();
+	if (rc) {
+		ata_free_force_param();
+		return rc;
+	}
+
+	libata_transport_init();
+	ata_scsi_transport_template = ata_attach_transport();
+	if (!ata_scsi_transport_template) {
+		ata_sff_exit();
+		rc = -ENOMEM;
+		goto err_out;
+	}
+
+	printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n");
+	return 0;
+
+err_out:
+	return rc;
+}
+
+static void __exit ata_exit(void)
+{
+	ata_release_transport(ata_scsi_transport_template);
+	libata_transport_exit();
+	ata_sff_exit();
+	ata_free_force_param();
+}
+
+subsys_initcall(ata_init);
+module_exit(ata_exit);
+
+static DEFINE_RATELIMIT_STATE(ratelimit, HZ / 5, 1);
+
+int ata_ratelimit(void)
+{
+	return __ratelimit(&ratelimit);
+}
+EXPORT_SYMBOL_GPL(ata_ratelimit);
+
+/**
+ *	ata_msleep - ATA EH owner aware msleep
+ *	@ap: ATA port to attribute the sleep to
+ *	@msecs: duration to sleep in milliseconds
+ *
+ *	Sleeps @msecs.  If the current task is owner of @ap's EH, the
+ *	ownership is released before going to sleep and reacquired
+ *	after the sleep is complete.  IOW, other ports sharing the
+ *	@ap->host will be allowed to own the EH while this task is
+ *	sleeping.
+ *
+ *	LOCKING:
+ *	Might sleep.
+ */
+void ata_msleep(struct ata_port *ap, unsigned int msecs)
+{
+	bool owns_eh = ap && ap->host->eh_owner == current;
+
+	if (owns_eh)
+		ata_eh_release(ap);
+
+	if (msecs < 20) {
+		unsigned long usecs = msecs * USEC_PER_MSEC;
+		usleep_range(usecs, usecs + 50);
+	} else {
+		msleep(msecs);
+	}
+
+	if (owns_eh)
+		ata_eh_acquire(ap);
+}
+EXPORT_SYMBOL_GPL(ata_msleep);
+
+/**
+ *	ata_wait_register - wait until register value changes
+ *	@ap: ATA port to wait register for, can be NULL
+ *	@reg: IO-mapped register
+ *	@mask: Mask to apply to read register value
+ *	@val: Wait condition
+ *	@interval: polling interval in milliseconds
+ *	@timeout: timeout in milliseconds
+ *
+ *	Waiting for some bits of register to change is a common
+ *	operation for ATA controllers.  This function reads 32bit LE
+ *	IO-mapped register @reg and tests for the following condition.
+ *
+ *	(*@reg & mask) != val
+ *
+ *	If the condition is met, it returns; otherwise, the process is
+ *	repeated after @interval_msec until timeout.
+ *
+ *	LOCKING:
+ *	Kernel thread context (may sleep)
+ *
+ *	RETURNS:
+ *	The final register value.
+ */
+u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, u32 val,
+		      unsigned int interval, unsigned int timeout)
+{
+	unsigned long deadline;
+	u32 tmp;
+
+	tmp = ioread32(reg);
+
+	/* Calculate timeout _after_ the first read to make sure
+	 * preceding writes reach the controller before starting to
+	 * eat away the timeout.
+	 */
+	deadline = ata_deadline(jiffies, timeout);
+
+	while ((tmp & mask) == val && time_before(jiffies, deadline)) {
+		ata_msleep(ap, interval);
+		tmp = ioread32(reg);
+	}
+
+	return tmp;
+}
+EXPORT_SYMBOL_GPL(ata_wait_register);
+
+/*
+ * Dummy port_ops
+ */
+static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc)
+{
+	return AC_ERR_SYSTEM;
+}
+
+static void ata_dummy_error_handler(struct ata_port *ap)
+{
+	/* truly dummy */
+}
+
+struct ata_port_operations ata_dummy_port_ops = {
+	.qc_issue		= ata_dummy_qc_issue,
+	.error_handler		= ata_dummy_error_handler,
+	.sched_eh		= ata_std_sched_eh,
+	.end_eh			= ata_std_end_eh,
+};
+EXPORT_SYMBOL_GPL(ata_dummy_port_ops);
+
+const struct ata_port_info ata_dummy_port_info = {
+	.port_ops		= &ata_dummy_port_ops,
+};
+EXPORT_SYMBOL_GPL(ata_dummy_port_info);
+
+void ata_print_version(const struct device *dev, const char *version)
+{
+	dev_printk(KERN_DEBUG, dev, "version %s\n", version);
+}
+EXPORT_SYMBOL(ata_print_version);
+
+EXPORT_TRACEPOINT_SYMBOL_GPL(ata_tf_load);
+EXPORT_TRACEPOINT_SYMBOL_GPL(ata_exec_command);
+EXPORT_TRACEPOINT_SYMBOL_GPL(ata_bmdma_setup);
+EXPORT_TRACEPOINT_SYMBOL_GPL(ata_bmdma_start);
+EXPORT_TRACEPOINT_SYMBOL_GPL(ata_bmdma_status);
diff --git a/rr-cache/9cbcf0e7550fb281021f0eaa085047a3afa82d13/postimage b/rr-cache/9cbcf0e7550fb281021f0eaa085047a3afa82d13/postimage
deleted file mode 100644
index d23b98ce4359..000000000000
--- a/rr-cache/9cbcf0e7550fb281021f0eaa085047a3afa82d13/postimage
+++ /dev/null
@@ -1,481 +0,0 @@
-/*
- * Copyright 2012 Red Hat Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- */
-/*
- * Authors: Dave Airlie <airlied@redhat.com>
- */
-#ifndef __AST_DRV_H__
-#define __AST_DRV_H__
-
-#include <linux/io.h>
-#include <linux/types.h>
-
-#include <drm/drm_connector.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_encoder.h>
-#include <drm/drm_mode.h>
-#include <drm/drm_framebuffer.h>
-
-#include "ast_reg.h"
-
-#define DRIVER_AUTHOR		"Dave Airlie"
-
-#define DRIVER_NAME		"ast"
-#define DRIVER_DESC		"AST"
-#define DRIVER_DATE		"20120228"
-
-#define DRIVER_MAJOR		0
-#define DRIVER_MINOR		1
-#define DRIVER_PATCHLEVEL	0
-
-#define PCI_CHIP_AST2000 0x2000
-#define PCI_CHIP_AST2100 0x2010
-
-#define __AST_CHIP(__gen, __index)	((__gen) << 16 | (__index))
-
-enum ast_chip {
-	/* 1st gen */
-	AST1000 = __AST_CHIP(1, 0), // unused
-	AST2000 = __AST_CHIP(1, 1),
-	/* 2nd gen */
-	AST1100 = __AST_CHIP(2, 0),
-	AST2100 = __AST_CHIP(2, 1),
-	AST2050 = __AST_CHIP(2, 2), // unused
-	/* 3rd gen */
-	AST2200 = __AST_CHIP(3, 0),
-	AST2150 = __AST_CHIP(3, 1),
-	/* 4th gen */
-	AST2300 = __AST_CHIP(4, 0),
-	AST1300 = __AST_CHIP(4, 1),
-	AST1050 = __AST_CHIP(4, 2), // unused
-	/* 5th gen */
-	AST2400 = __AST_CHIP(5, 0),
-	AST1400 = __AST_CHIP(5, 1),
-	AST1250 = __AST_CHIP(5, 2), // unused
-	/* 6th gen */
-	AST2500 = __AST_CHIP(6, 0),
-	AST2510 = __AST_CHIP(6, 1),
-	AST2520 = __AST_CHIP(6, 2), // unused
-	/* 7th gen */
-	AST2600 = __AST_CHIP(7, 0),
-	AST2620 = __AST_CHIP(7, 1), // unused
-};
-
-#define __AST_CHIP_GEN(__chip)	(((unsigned long)(__chip)) >> 16)
-
-enum ast_tx_chip {
-	AST_TX_NONE,
-	AST_TX_SIL164,
-	AST_TX_DP501,
-	AST_TX_ASTDP,
-};
-
-#define AST_TX_NONE_BIT		BIT(AST_TX_NONE)
-#define AST_TX_SIL164_BIT	BIT(AST_TX_SIL164)
-#define AST_TX_DP501_BIT	BIT(AST_TX_DP501)
-#define AST_TX_ASTDP_BIT	BIT(AST_TX_ASTDP)
-
-enum ast_config_mode {
-	ast_use_p2a,
-	ast_use_dt,
-	ast_use_defaults
-};
-
-#define AST_DRAM_512Mx16 0
-#define AST_DRAM_1Gx16   1
-#define AST_DRAM_512Mx32 2
-#define AST_DRAM_1Gx32   3
-#define AST_DRAM_2Gx16   6
-#define AST_DRAM_4Gx16   7
-#define AST_DRAM_8Gx16   8
-
-/*
- * Hardware cursor
- */
-
-#define AST_MAX_HWC_WIDTH	64
-#define AST_MAX_HWC_HEIGHT	64
-
-#define AST_HWC_SIZE		(AST_MAX_HWC_WIDTH * AST_MAX_HWC_HEIGHT * 2)
-#define AST_HWC_SIGNATURE_SIZE	32
-
-/* define for signature structure */
-#define AST_HWC_SIGNATURE_CHECKSUM	0x00
-#define AST_HWC_SIGNATURE_SizeX		0x04
-#define AST_HWC_SIGNATURE_SizeY		0x08
-#define AST_HWC_SIGNATURE_X		0x0C
-#define AST_HWC_SIGNATURE_Y		0x10
-#define AST_HWC_SIGNATURE_HOTSPOTX	0x14
-#define AST_HWC_SIGNATURE_HOTSPOTY	0x18
-
-/*
- * Planes
- */
-
-struct ast_plane {
-	struct drm_plane base;
-
-	void __iomem *vaddr;
-	u64 offset;
-	unsigned long size;
-};
-
-static inline struct ast_plane *to_ast_plane(struct drm_plane *plane)
-{
-	return container_of(plane, struct ast_plane, base);
-}
-
-/*
- * BMC
- */
-
-struct ast_bmc_connector {
-	struct drm_connector base;
-	struct drm_connector *physical_connector;
-};
-
-static inline struct ast_bmc_connector *
-to_ast_bmc_connector(struct drm_connector *connector)
-{
-	return container_of(connector, struct ast_bmc_connector, base);
-}
-
-/*
- * Device
- */
-
-struct ast_device {
-	struct drm_device base;
-
-	void __iomem *regs;
-	void __iomem *ioregs;
-	void __iomem *dp501_fw_buf;
-
-	enum ast_config_mode config_mode;
-	enum ast_chip chip;
-
-	uint32_t dram_bus_width;
-	uint32_t dram_type;
-	uint32_t mclk;
-
-	void __iomem	*vram;
-	unsigned long	vram_base;
-	unsigned long	vram_size;
-	unsigned long	vram_fb_available;
-
-	struct mutex modeset_lock; /* Protects access to modeset I/O registers in ioregs */
-
-	struct ast_plane primary_plane;
-	struct ast_plane cursor_plane;
-	struct drm_crtc crtc;
-	struct {
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} vga;
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} sil164;
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} dp501;
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} astdp;
-		struct {
-			struct drm_encoder encoder;
-			struct ast_bmc_connector bmc_connector;
-		} bmc;
-	} output;
-
-	bool support_wide_screen;
-
-	unsigned long tx_chip_types;		/* bitfield of enum ast_chip_type */
-	u8 *dp501_fw_addr;
-	const struct firmware *dp501_fw;	/* dp501 fw */
-};
-
-static inline struct ast_device *to_ast_device(struct drm_device *dev)
-{
-	return container_of(dev, struct ast_device, base);
-}
-
-struct drm_device *ast_device_create(struct pci_dev *pdev,
-				     const struct drm_driver *drv,
-				     enum ast_chip chip,
-				     enum ast_config_mode config_mode,
-				     void __iomem *regs,
-				     void __iomem *ioregs,
-				     bool need_post);
-
-static inline unsigned long __ast_gen(struct ast_device *ast)
-{
-	return __AST_CHIP_GEN(ast->chip);
-}
-#define AST_GEN(__ast)	__ast_gen(__ast)
-
-static inline bool __ast_gen_is_eq(struct ast_device *ast, unsigned long gen)
-{
-	return __ast_gen(ast) == gen;
-}
-#define IS_AST_GEN1(__ast)	__ast_gen_is_eq(__ast, 1)
-#define IS_AST_GEN2(__ast)	__ast_gen_is_eq(__ast, 2)
-#define IS_AST_GEN3(__ast)	__ast_gen_is_eq(__ast, 3)
-#define IS_AST_GEN4(__ast)	__ast_gen_is_eq(__ast, 4)
-#define IS_AST_GEN5(__ast)	__ast_gen_is_eq(__ast, 5)
-#define IS_AST_GEN6(__ast)	__ast_gen_is_eq(__ast, 6)
-#define IS_AST_GEN7(__ast)	__ast_gen_is_eq(__ast, 7)
-
-static inline u8 __ast_read8(const void __iomem *addr, u32 reg)
-{
-	return ioread8(addr + reg);
-}
-
-static inline u32 __ast_read32(const void __iomem *addr, u32 reg)
-{
-	return ioread32(addr + reg);
-}
-
-static inline void __ast_write8(void __iomem *addr, u32 reg, u8 val)
-{
-	iowrite8(val, addr + reg);
-}
-
-static inline void __ast_write32(void __iomem *addr, u32 reg, u32 val)
-{
-	iowrite32(val, addr + reg);
-}
-
-static inline u8 __ast_read8_i(void __iomem *addr, u32 reg, u8 index)
-{
-	__ast_write8(addr, reg, index);
-	return __ast_read8(addr, reg + 1);
-}
-
-static inline u8 __ast_read8_i_masked(void __iomem *addr, u32 reg, u8 index, u8 read_mask)
-{
-	u8 val = __ast_read8_i(addr, reg, index);
-
-	return val & read_mask;
-}
-
-static inline void __ast_write8_i(void __iomem *addr, u32 reg, u8 index, u8 val)
-{
-	__ast_write8(addr, reg, index);
-	__ast_write8(addr, reg + 1, val);
-}
-
-static inline void __ast_write8_i_masked(void __iomem *addr, u32 reg, u8 index, u8 read_mask,
-					 u8 val)
-{
-	u8 tmp = __ast_read8_i_masked(addr, reg, index, read_mask);
-
-	tmp |= val;
-	__ast_write8_i(addr, reg, index, tmp);
-}
-
-static inline u32 ast_read32(struct ast_device *ast, u32 reg)
-{
-	return __ast_read32(ast->regs, reg);
-}
-
-static inline void ast_write32(struct ast_device *ast, u32 reg, u32 val)
-{
-	__ast_write32(ast->regs, reg, val);
-}
-
-static inline u8 ast_io_read8(struct ast_device *ast, u32 reg)
-{
-	return __ast_read8(ast->ioregs, reg);
-}
-
-static inline void ast_io_write8(struct ast_device *ast, u32 reg, u8 val)
-{
-	__ast_write8(ast->ioregs, reg, val);
-}
-
-static inline u8 ast_get_index_reg(struct ast_device *ast, u32 base, u8 index)
-{
-	return __ast_read8_i(ast->ioregs, base, index);
-}
-
-static inline u8 ast_get_index_reg_mask(struct ast_device *ast, u32 base, u8 index,
-					u8 preserve_mask)
-{
-	return __ast_read8_i_masked(ast->ioregs, base, index, preserve_mask);
-}
-
-static inline void ast_set_index_reg(struct ast_device *ast, u32 base, u8 index, u8 val)
-{
-	__ast_write8_i(ast->ioregs, base, index, val);
-}
-
-static inline void ast_set_index_reg_mask(struct ast_device *ast, u32 base, u8 index,
-					  u8 preserve_mask, u8 val)
-{
-	__ast_write8_i_masked(ast->ioregs, base, index, preserve_mask, val);
-}
-
-#define AST_VIDMEM_SIZE_8M    0x00800000
-#define AST_VIDMEM_SIZE_16M   0x01000000
-#define AST_VIDMEM_SIZE_32M   0x02000000
-#define AST_VIDMEM_SIZE_64M   0x04000000
-#define AST_VIDMEM_SIZE_128M  0x08000000
-
-#define AST_VIDMEM_DEFAULT_SIZE AST_VIDMEM_SIZE_8M
-
-struct ast_vbios_stdtable {
-	u8 misc;
-	u8 seq[4];
-	u8 crtc[25];
-	u8 ar[20];
-	u8 gr[9];
-};
-
-struct ast_vbios_enhtable {
-	u32 ht;
-	u32 hde;
-	u32 hfp;
-	u32 hsync;
-	u32 vt;
-	u32 vde;
-	u32 vfp;
-	u32 vsync;
-	u32 dclk_index;
-	u32 flags;
-	u32 refresh_rate;
-	u32 refresh_rate_index;
-	u32 mode_id;
-};
-
-struct ast_vbios_dclk_info {
-	u8 param1;
-	u8 param2;
-	u8 param3;
-};
-
-struct ast_vbios_mode_info {
-	const struct ast_vbios_stdtable *std_table;
-	const struct ast_vbios_enhtable *enh_table;
-};
-
-struct ast_crtc_state {
-	struct drm_crtc_state base;
-
-	/* Last known format of primary plane */
-	const struct drm_format_info *format;
-
-	struct ast_vbios_mode_info vbios_mode_info;
-};
-
-#define to_ast_crtc_state(state) container_of(state, struct ast_crtc_state, base)
-
-int ast_mode_config_init(struct ast_device *ast);
-
-#define AST_MM_ALIGN_SHIFT 4
-#define AST_MM_ALIGN_MASK ((1 << AST_MM_ALIGN_SHIFT) - 1)
-
-#define AST_DP501_FW_VERSION_MASK	GENMASK(7, 4)
-#define AST_DP501_FW_VERSION_1		BIT(4)
-#define AST_DP501_PNP_CONNECTED		BIT(1)
-
-#define AST_DP501_DEFAULT_DCLK	65
-
-#define AST_DP501_GBL_VERSION	0xf000
-#define AST_DP501_PNPMONITOR	0xf010
-#define AST_DP501_LINKRATE	0xf014
-#define AST_DP501_EDID_DATA	0xf020
-
-#define AST_DP_POWER_ON			true
-#define AST_DP_POWER_OFF			false
-
-/*
- * ASTDP resoultion table:
- * EX:	ASTDP_A_B_C:
- *		A: Resolution
- *		B: Refresh Rate
- *		C: Misc information, such as CVT, Reduce Blanked
- */
-#define ASTDP_640x480_60		0x00
-#define ASTDP_640x480_72		0x01
-#define ASTDP_640x480_75		0x02
-#define ASTDP_640x480_85		0x03
-#define ASTDP_800x600_56		0x04
-#define ASTDP_800x600_60		0x05
-#define ASTDP_800x600_72		0x06
-#define ASTDP_800x600_75		0x07
-#define ASTDP_800x600_85		0x08
-#define ASTDP_1024x768_60		0x09
-#define ASTDP_1024x768_70		0x0A
-#define ASTDP_1024x768_75		0x0B
-#define ASTDP_1024x768_85		0x0C
-#define ASTDP_1280x1024_60		0x0D
-#define ASTDP_1280x1024_75		0x0E
-#define ASTDP_1280x1024_85		0x0F
-#define ASTDP_1600x1200_60		0x10
-#define ASTDP_320x240_60		0x11
-#define ASTDP_400x300_60		0x12
-#define ASTDP_512x384_60		0x13
-#define ASTDP_1920x1200_60		0x14
-#define ASTDP_1920x1080_60		0x15
-#define ASTDP_1280x800_60		0x16
-#define ASTDP_1280x800_60_RB	0x17
-#define ASTDP_1440x900_60		0x18
-#define ASTDP_1440x900_60_RB	0x19
-#define ASTDP_1680x1050_60		0x1A
-#define ASTDP_1680x1050_60_RB	0x1B
-#define ASTDP_1600x900_60		0x1C
-#define ASTDP_1600x900_60_RB	0x1D
-#define ASTDP_1366x768_60		0x1E
-#define ASTDP_1152x864_75		0x1F
-
-int ast_mm_init(struct ast_device *ast);
-
-/* ast post */
-void ast_post_gpu(struct drm_device *dev);
-u32 ast_mindwm(struct ast_device *ast, u32 r);
-void ast_moutdwm(struct ast_device *ast, u32 r, u32 v);
-void ast_patch_ahb_2500(void __iomem *regs);
-/* ast dp501 */
-void ast_set_dp501_video_output(struct drm_device *dev, u8 mode);
-bool ast_backup_fw(struct drm_device *dev, u8 *addr, u32 size);
-bool ast_dp501_is_connected(struct ast_device *ast);
-bool ast_dp501_read_edid(struct drm_device *dev, u8 *ediddata);
-u8 ast_get_dp501_max_clk(struct drm_device *dev);
-void ast_init_3rdtx(struct drm_device *dev);
-
-/* aspeed DP */
-bool ast_astdp_is_connected(struct ast_device *ast);
-int ast_astdp_read_edid(struct drm_device *dev, u8 *ediddata);
-int ast_dp_launch(struct ast_device *ast);
-bool ast_dp_power_is_on(struct ast_device *ast);
-void ast_dp_power_on_off(struct drm_device *dev, bool no);
-void ast_dp_link_training(struct ast_device *ast);
-void ast_dp_set_on_off(struct drm_device *dev, bool no);
-void ast_dp_set_mode(struct drm_crtc *crtc, struct ast_vbios_mode_info *vbios_mode);
-
-#endif
diff --git a/rr-cache/9cbcf0e7550fb281021f0eaa085047a3afa82d13/preimage b/rr-cache/9cbcf0e7550fb281021f0eaa085047a3afa82d13/preimage
deleted file mode 100644
index 7e01f3f015dd..000000000000
--- a/rr-cache/9cbcf0e7550fb281021f0eaa085047a3afa82d13/preimage
+++ /dev/null
@@ -1,485 +0,0 @@
-/*
- * Copyright 2012 Red Hat Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- */
-/*
- * Authors: Dave Airlie <airlied@redhat.com>
- */
-#ifndef __AST_DRV_H__
-#define __AST_DRV_H__
-
-#include <linux/io.h>
-#include <linux/types.h>
-
-#include <drm/drm_connector.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_encoder.h>
-#include <drm/drm_mode.h>
-#include <drm/drm_framebuffer.h>
-
-#include "ast_reg.h"
-
-#define DRIVER_AUTHOR		"Dave Airlie"
-
-#define DRIVER_NAME		"ast"
-#define DRIVER_DESC		"AST"
-#define DRIVER_DATE		"20120228"
-
-#define DRIVER_MAJOR		0
-#define DRIVER_MINOR		1
-#define DRIVER_PATCHLEVEL	0
-
-#define PCI_CHIP_AST2000 0x2000
-#define PCI_CHIP_AST2100 0x2010
-
-#define __AST_CHIP(__gen, __index)	((__gen) << 16 | (__index))
-
-enum ast_chip {
-	/* 1st gen */
-	AST1000 = __AST_CHIP(1, 0), // unused
-	AST2000 = __AST_CHIP(1, 1),
-	/* 2nd gen */
-	AST1100 = __AST_CHIP(2, 0),
-	AST2100 = __AST_CHIP(2, 1),
-	AST2050 = __AST_CHIP(2, 2), // unused
-	/* 3rd gen */
-	AST2200 = __AST_CHIP(3, 0),
-	AST2150 = __AST_CHIP(3, 1),
-	/* 4th gen */
-	AST2300 = __AST_CHIP(4, 0),
-	AST1300 = __AST_CHIP(4, 1),
-	AST1050 = __AST_CHIP(4, 2), // unused
-	/* 5th gen */
-	AST2400 = __AST_CHIP(5, 0),
-	AST1400 = __AST_CHIP(5, 1),
-	AST1250 = __AST_CHIP(5, 2), // unused
-	/* 6th gen */
-	AST2500 = __AST_CHIP(6, 0),
-	AST2510 = __AST_CHIP(6, 1),
-	AST2520 = __AST_CHIP(6, 2), // unused
-	/* 7th gen */
-	AST2600 = __AST_CHIP(7, 0),
-	AST2620 = __AST_CHIP(7, 1), // unused
-};
-
-#define __AST_CHIP_GEN(__chip)	(((unsigned long)(__chip)) >> 16)
-
-enum ast_tx_chip {
-	AST_TX_NONE,
-	AST_TX_SIL164,
-	AST_TX_DP501,
-	AST_TX_ASTDP,
-};
-
-#define AST_TX_NONE_BIT		BIT(AST_TX_NONE)
-#define AST_TX_SIL164_BIT	BIT(AST_TX_SIL164)
-#define AST_TX_DP501_BIT	BIT(AST_TX_DP501)
-#define AST_TX_ASTDP_BIT	BIT(AST_TX_ASTDP)
-
-enum ast_config_mode {
-	ast_use_p2a,
-	ast_use_dt,
-	ast_use_defaults
-};
-
-#define AST_DRAM_512Mx16 0
-#define AST_DRAM_1Gx16   1
-#define AST_DRAM_512Mx32 2
-#define AST_DRAM_1Gx32   3
-#define AST_DRAM_2Gx16   6
-#define AST_DRAM_4Gx16   7
-#define AST_DRAM_8Gx16   8
-
-/*
- * Hardware cursor
- */
-
-#define AST_MAX_HWC_WIDTH	64
-#define AST_MAX_HWC_HEIGHT	64
-
-#define AST_HWC_SIZE		(AST_MAX_HWC_WIDTH * AST_MAX_HWC_HEIGHT * 2)
-#define AST_HWC_SIGNATURE_SIZE	32
-
-/* define for signature structure */
-#define AST_HWC_SIGNATURE_CHECKSUM	0x00
-#define AST_HWC_SIGNATURE_SizeX		0x04
-#define AST_HWC_SIGNATURE_SizeY		0x08
-#define AST_HWC_SIGNATURE_X		0x0C
-#define AST_HWC_SIGNATURE_Y		0x10
-#define AST_HWC_SIGNATURE_HOTSPOTX	0x14
-#define AST_HWC_SIGNATURE_HOTSPOTY	0x18
-
-/*
- * Planes
- */
-
-struct ast_plane {
-	struct drm_plane base;
-
-	void __iomem *vaddr;
-	u64 offset;
-	unsigned long size;
-};
-
-static inline struct ast_plane *to_ast_plane(struct drm_plane *plane)
-{
-	return container_of(plane, struct ast_plane, base);
-}
-
-/*
- * BMC
- */
-
-struct ast_bmc_connector {
-	struct drm_connector base;
-	struct drm_connector *physical_connector;
-};
-
-static inline struct ast_bmc_connector *
-to_ast_bmc_connector(struct drm_connector *connector)
-{
-	return container_of(connector, struct ast_bmc_connector, base);
-}
-
-/*
- * Device
- */
-
-struct ast_device {
-	struct drm_device base;
-
-	void __iomem *regs;
-	void __iomem *ioregs;
-	void __iomem *dp501_fw_buf;
-
-	enum ast_config_mode config_mode;
-	enum ast_chip chip;
-
-	uint32_t dram_bus_width;
-	uint32_t dram_type;
-	uint32_t mclk;
-
-	void __iomem	*vram;
-	unsigned long	vram_base;
-	unsigned long	vram_size;
-	unsigned long	vram_fb_available;
-
-	struct mutex modeset_lock; /* Protects access to modeset I/O registers in ioregs */
-
-	struct ast_plane primary_plane;
-	struct ast_plane cursor_plane;
-	struct drm_crtc crtc;
-	struct {
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} vga;
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} sil164;
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} dp501;
-		struct {
-			struct drm_encoder encoder;
-			struct drm_connector connector;
-		} astdp;
-		struct {
-			struct drm_encoder encoder;
-			struct ast_bmc_connector bmc_connector;
-		} bmc;
-	} output;
-
-	bool support_wide_screen;
-
-	unsigned long tx_chip_types;		/* bitfield of enum ast_chip_type */
-	u8 *dp501_fw_addr;
-	const struct firmware *dp501_fw;	/* dp501 fw */
-};
-
-static inline struct ast_device *to_ast_device(struct drm_device *dev)
-{
-	return container_of(dev, struct ast_device, base);
-}
-
-struct drm_device *ast_device_create(struct pci_dev *pdev,
-				     const struct drm_driver *drv,
-				     enum ast_chip chip,
-				     enum ast_config_mode config_mode,
-				     void __iomem *regs,
-				     void __iomem *ioregs,
-				     bool need_post);
-
-static inline unsigned long __ast_gen(struct ast_device *ast)
-{
-	return __AST_CHIP_GEN(ast->chip);
-}
-#define AST_GEN(__ast)	__ast_gen(__ast)
-
-static inline bool __ast_gen_is_eq(struct ast_device *ast, unsigned long gen)
-{
-	return __ast_gen(ast) == gen;
-}
-#define IS_AST_GEN1(__ast)	__ast_gen_is_eq(__ast, 1)
-#define IS_AST_GEN2(__ast)	__ast_gen_is_eq(__ast, 2)
-#define IS_AST_GEN3(__ast)	__ast_gen_is_eq(__ast, 3)
-#define IS_AST_GEN4(__ast)	__ast_gen_is_eq(__ast, 4)
-#define IS_AST_GEN5(__ast)	__ast_gen_is_eq(__ast, 5)
-#define IS_AST_GEN6(__ast)	__ast_gen_is_eq(__ast, 6)
-#define IS_AST_GEN7(__ast)	__ast_gen_is_eq(__ast, 7)
-
-static inline u8 __ast_read8(const void __iomem *addr, u32 reg)
-{
-	return ioread8(addr + reg);
-}
-
-static inline u32 __ast_read32(const void __iomem *addr, u32 reg)
-{
-	return ioread32(addr + reg);
-}
-
-static inline void __ast_write8(void __iomem *addr, u32 reg, u8 val)
-{
-	iowrite8(val, addr + reg);
-}
-
-static inline void __ast_write32(void __iomem *addr, u32 reg, u32 val)
-{
-	iowrite32(val, addr + reg);
-}
-
-static inline u8 __ast_read8_i(void __iomem *addr, u32 reg, u8 index)
-{
-	__ast_write8(addr, reg, index);
-	return __ast_read8(addr, reg + 1);
-}
-
-static inline u8 __ast_read8_i_masked(void __iomem *addr, u32 reg, u8 index, u8 read_mask)
-{
-	u8 val = __ast_read8_i(addr, reg, index);
-
-	return val & read_mask;
-}
-
-static inline void __ast_write8_i(void __iomem *addr, u32 reg, u8 index, u8 val)
-{
-	__ast_write8(addr, reg, index);
-	__ast_write8(addr, reg + 1, val);
-}
-
-static inline void __ast_write8_i_masked(void __iomem *addr, u32 reg, u8 index, u8 read_mask,
-					 u8 val)
-{
-	u8 tmp = __ast_read8_i_masked(addr, reg, index, read_mask);
-
-	tmp |= val;
-	__ast_write8_i(addr, reg, index, tmp);
-}
-
-static inline u32 ast_read32(struct ast_device *ast, u32 reg)
-{
-	return __ast_read32(ast->regs, reg);
-}
-
-static inline void ast_write32(struct ast_device *ast, u32 reg, u32 val)
-{
-	__ast_write32(ast->regs, reg, val);
-}
-
-static inline u8 ast_io_read8(struct ast_device *ast, u32 reg)
-{
-	return __ast_read8(ast->ioregs, reg);
-}
-
-static inline void ast_io_write8(struct ast_device *ast, u32 reg, u8 val)
-{
-	__ast_write8(ast->ioregs, reg, val);
-}
-
-static inline u8 ast_get_index_reg(struct ast_device *ast, u32 base, u8 index)
-{
-	return __ast_read8_i(ast->ioregs, base, index);
-}
-
-static inline u8 ast_get_index_reg_mask(struct ast_device *ast, u32 base, u8 index,
-					u8 preserve_mask)
-{
-	return __ast_read8_i_masked(ast->ioregs, base, index, preserve_mask);
-}
-
-static inline void ast_set_index_reg(struct ast_device *ast, u32 base, u8 index, u8 val)
-{
-	__ast_write8_i(ast->ioregs, base, index, val);
-}
-
-static inline void ast_set_index_reg_mask(struct ast_device *ast, u32 base, u8 index,
-					  u8 preserve_mask, u8 val)
-{
-	__ast_write8_i_masked(ast->ioregs, base, index, preserve_mask, val);
-}
-
-#define AST_VIDMEM_SIZE_8M    0x00800000
-#define AST_VIDMEM_SIZE_16M   0x01000000
-#define AST_VIDMEM_SIZE_32M   0x02000000
-#define AST_VIDMEM_SIZE_64M   0x04000000
-#define AST_VIDMEM_SIZE_128M  0x08000000
-
-#define AST_VIDMEM_DEFAULT_SIZE AST_VIDMEM_SIZE_8M
-
-struct ast_vbios_stdtable {
-	u8 misc;
-	u8 seq[4];
-	u8 crtc[25];
-	u8 ar[20];
-	u8 gr[9];
-};
-
-struct ast_vbios_enhtable {
-	u32 ht;
-	u32 hde;
-	u32 hfp;
-	u32 hsync;
-	u32 vt;
-	u32 vde;
-	u32 vfp;
-	u32 vsync;
-	u32 dclk_index;
-	u32 flags;
-	u32 refresh_rate;
-	u32 refresh_rate_index;
-	u32 mode_id;
-};
-
-struct ast_vbios_dclk_info {
-	u8 param1;
-	u8 param2;
-	u8 param3;
-};
-
-struct ast_vbios_mode_info {
-	const struct ast_vbios_stdtable *std_table;
-	const struct ast_vbios_enhtable *enh_table;
-};
-
-struct ast_crtc_state {
-	struct drm_crtc_state base;
-
-	/* Last known format of primary plane */
-	const struct drm_format_info *format;
-
-	struct ast_vbios_mode_info vbios_mode_info;
-};
-
-#define to_ast_crtc_state(state) container_of(state, struct ast_crtc_state, base)
-
-int ast_mode_config_init(struct ast_device *ast);
-
-#define AST_MM_ALIGN_SHIFT 4
-#define AST_MM_ALIGN_MASK ((1 << AST_MM_ALIGN_SHIFT) - 1)
-
-#define AST_DP501_FW_VERSION_MASK	GENMASK(7, 4)
-#define AST_DP501_FW_VERSION_1		BIT(4)
-#define AST_DP501_PNP_CONNECTED		BIT(1)
-
-#define AST_DP501_DEFAULT_DCLK	65
-
-#define AST_DP501_GBL_VERSION	0xf000
-#define AST_DP501_PNPMONITOR	0xf010
-#define AST_DP501_LINKRATE	0xf014
-#define AST_DP501_EDID_DATA	0xf020
-
-#define AST_DP_POWER_ON			true
-#define AST_DP_POWER_OFF			false
-
-/*
- * ASTDP resoultion table:
- * EX:	ASTDP_A_B_C:
- *		A: Resolution
- *		B: Refresh Rate
- *		C: Misc information, such as CVT, Reduce Blanked
- */
-#define ASTDP_640x480_60		0x00
-#define ASTDP_640x480_72		0x01
-#define ASTDP_640x480_75		0x02
-#define ASTDP_640x480_85		0x03
-#define ASTDP_800x600_56		0x04
-#define ASTDP_800x600_60		0x05
-#define ASTDP_800x600_72		0x06
-#define ASTDP_800x600_75		0x07
-#define ASTDP_800x600_85		0x08
-#define ASTDP_1024x768_60		0x09
-#define ASTDP_1024x768_70		0x0A
-#define ASTDP_1024x768_75		0x0B
-#define ASTDP_1024x768_85		0x0C
-#define ASTDP_1280x1024_60		0x0D
-#define ASTDP_1280x1024_75		0x0E
-#define ASTDP_1280x1024_85		0x0F
-#define ASTDP_1600x1200_60		0x10
-#define ASTDP_320x240_60		0x11
-#define ASTDP_400x300_60		0x12
-#define ASTDP_512x384_60		0x13
-#define ASTDP_1920x1200_60		0x14
-#define ASTDP_1920x1080_60		0x15
-#define ASTDP_1280x800_60		0x16
-#define ASTDP_1280x800_60_RB	0x17
-#define ASTDP_1440x900_60		0x18
-#define ASTDP_1440x900_60_RB	0x19
-#define ASTDP_1680x1050_60		0x1A
-#define ASTDP_1680x1050_60_RB	0x1B
-#define ASTDP_1600x900_60		0x1C
-#define ASTDP_1600x900_60_RB	0x1D
-#define ASTDP_1366x768_60		0x1E
-#define ASTDP_1152x864_75		0x1F
-
-int ast_mm_init(struct ast_device *ast);
-
-/* ast post */
-void ast_post_gpu(struct drm_device *dev);
-u32 ast_mindwm(struct ast_device *ast, u32 r);
-void ast_moutdwm(struct ast_device *ast, u32 r, u32 v);
-void ast_patch_ahb_2500(void __iomem *regs);
-/* ast dp501 */
-void ast_set_dp501_video_output(struct drm_device *dev, u8 mode);
-bool ast_backup_fw(struct drm_device *dev, u8 *addr, u32 size);
-bool ast_dp501_is_connected(struct ast_device *ast);
-bool ast_dp501_read_edid(struct drm_device *dev, u8 *ediddata);
-u8 ast_get_dp501_max_clk(struct drm_device *dev);
-void ast_init_3rdtx(struct drm_device *dev);
-
-/* aspeed DP */
-bool ast_astdp_is_connected(struct ast_device *ast);
-int ast_astdp_read_edid(struct drm_device *dev, u8 *ediddata);
-<<<<<<<
-int ast_dp_launch(struct ast_device *ast);
-=======
-void ast_dp_launch(struct drm_device *dev);
-bool ast_dp_power_is_on(struct ast_device *ast);
->>>>>>>
-void ast_dp_power_on_off(struct drm_device *dev, bool no);
-void ast_dp_link_training(struct ast_device *ast);
-void ast_dp_set_on_off(struct drm_device *dev, bool no);
-void ast_dp_set_mode(struct drm_crtc *crtc, struct ast_vbios_mode_info *vbios_mode);
-
-#endif