ioat: move to drivers/dma/ioat/

When first created the ioat driver was the only inhabitant of
drivers/dma/.  Now, it is the only multi-file (more than a .c and a .h)
driver in the directory.  Moving it to an ioat/ subdirectory allows the
naming convention to be cleaned up, and allows for future splitting of
the source files by hardware version (v1, v2, and v3).

Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 0 insertions, 165 deletions

diff --git a/drivers/dma/ioatdma.h b/drivers/dma/ioatdma.h
deleted file mode 100644
index a52ff4bd4601..000000000000
--- a/drivers/dma/ioatdma.h
+++ /dev/null
@@ -1,165 +0,0 @@
-/*
- * Copyright(c) 2004 - 2009 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
- *
- * The full GNU General Public License is included in this distribution in the
- * file called COPYING.
- */
-#ifndef IOATDMA_H
-#define IOATDMA_H
-
-#include <linux/dmaengine.h>
-#include "ioatdma_hw.h"
-#include <linux/init.h>
-#include <linux/dmapool.h>
-#include <linux/cache.h>
-#include <linux/pci_ids.h>
-#include <net/tcp.h>
-
-#define IOAT_DMA_VERSION  "3.64"
-
-enum ioat_interrupt {
-	none = 0,
-	msix_multi_vector = 1,
-	msix_single_vector = 2,
-	msi = 3,
-	intx = 4,
-};
-
-#define IOAT_LOW_COMPLETION_MASK	0xffffffc0
-#define IOAT_DMA_DCA_ANY_CPU		~0
-#define IOAT_WATCHDOG_PERIOD		(2 * HZ)
-
-
-/**
- * struct ioatdma_device - internal representation of a IOAT device
- * @pdev: PCI-Express device
- * @reg_base: MMIO register space base address
- * @dma_pool: for allocating DMA descriptors
- * @common: embedded struct dma_device
- * @version: version of ioatdma device
- * @irq_mode: which style irq to use
- * @msix_entries: irq handlers
- * @idx: per channel data
- */
-
-struct ioatdma_device {
-	struct pci_dev *pdev;
-	void __iomem *reg_base;
-	struct pci_pool *dma_pool;
-	struct pci_pool *completion_pool;
-	struct dma_device common;
-	u8 version;
-	enum ioat_interrupt irq_mode;
-	struct delayed_work work;
-	struct msix_entry msix_entries[4];
-	struct ioat_dma_chan *idx[4];
-};
-
-/**
- * struct ioat_dma_chan - internal representation of a DMA channel
- */
-struct ioat_dma_chan {
-
-	void __iomem *reg_base;
-
-	dma_cookie_t completed_cookie;
-	unsigned long last_completion;
-	unsigned long last_completion_time;
-
-	size_t xfercap;	/* XFERCAP register value expanded out */
-
-	spinlock_t cleanup_lock;
-	spinlock_t desc_lock;
-	struct list_head free_desc;
-	struct list_head used_desc;
-	unsigned long watchdog_completion;
-	int watchdog_tcp_cookie;
-	u32 watchdog_last_tcp_cookie;
-	struct delayed_work work;
-
-	int pending;
-	int dmacount;
-	int desccount;
-
-	struct ioatdma_device *device;
-	struct dma_chan common;
-
-	dma_addr_t completion_addr;
-	union {
-		u64 full; /* HW completion writeback */
-		struct {
-			u32 low;
-			u32 high;
-		};
-	} *completion_virt;
-	unsigned long last_compl_desc_addr_hw;
-	struct tasklet_struct cleanup_task;
-};
-
-/* wrapper around hardware descriptor format + additional software fields */
-
-/**
- * struct ioat_desc_sw - wrapper around hardware descriptor
- * @hw: hardware DMA descriptor
- * @node: this descriptor will either be on the free list,
- *     or attached to a transaction list (async_tx.tx_list)
- * @tx_cnt: number of descriptors required to complete the transaction
- * @async_tx: the generic software descriptor for all engines
- */
-struct ioat_desc_sw {
-	struct ioat_dma_descriptor *hw;
-	struct list_head node;
-	int tx_cnt;
-	size_t len;
-	dma_addr_t src;
-	dma_addr_t dst;
-	struct dma_async_tx_descriptor async_tx;
-};
-
-static inline void ioat_set_tcp_copy_break(struct ioatdma_device *dev)
-{
-	#ifdef CONFIG_NET_DMA
-	switch (dev->version) {
-	case IOAT_VER_1_2:
-		sysctl_tcp_dma_copybreak = 4096;
-		break;
-	case IOAT_VER_2_0:
-		sysctl_tcp_dma_copybreak = 2048;
-		break;
-	case IOAT_VER_3_0:
-		sysctl_tcp_dma_copybreak = 262144;
-		break;
-	}
-	#endif
-}
-
-#if defined(CONFIG_INTEL_IOATDMA) || defined(CONFIG_INTEL_IOATDMA_MODULE)
-struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev,
-				      void __iomem *iobase);
-void ioat_dma_remove(struct ioatdma_device *device);
-struct dca_provider *ioat_dca_init(struct pci_dev *pdev, void __iomem *iobase);
-struct dca_provider *ioat2_dca_init(struct pci_dev *pdev, void __iomem *iobase);
-struct dca_provider *ioat3_dca_init(struct pci_dev *pdev, void __iomem *iobase);
-#else
-#define ioat_dma_probe(pdev, iobase)    NULL
-#define ioat_dma_remove(device)         do { } while (0)
-#define ioat_dca_init(pdev, iobase)	NULL
-#define ioat2_dca_init(pdev, iobase)	NULL
-#define ioat3_dca_init(pdev, iobase)	NULL
-#endif
-
-#endif /* IOATDMA_H */