path: root/xc/programs/Xserver/hw/xfree86/os-support/bus/xf86Pci.h

/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bus/xf86Pci.h,v 1.26 2000/09/19 12:46:21 eich Exp $ */
/*
 * Copyright 1998 by Concurrent Computer Corporation
 *
 * Permission to use, copy, modify, distribute, and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and that
 * both that copyright notice and this permission notice appear in
 * supporting documentation, and that the name of Concurrent Computer
 * Corporation not be used in advertising or publicity pertaining to
 * distribution of the software without specific, written prior
 * permission.  Concurrent Computer Corporation makes no representations
 * about the suitability of this software for any purpose.  It is
 * provided "as is" without express or implied warranty.
 *
 * CONCURRENT COMPUTER CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD
 * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS, IN NO EVENT SHALL CONCURRENT COMPUTER CORPORATION BE
 * LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
 * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 *
 * Copyright 1998 by Metro Link Incorporated
 *
 * Permission to use, copy, modify, distribute, and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and that
 * both that copyright notice and this permission notice appear in
 * supporting documentation, and that the name of Metro Link
 * Incorporated not be used in advertising or publicity pertaining to
 * distribution of the software without specific, written prior
 * permission.  Metro Link Incorporated makes no representations
 * about the suitability of this software for any purpose.  It is
 * provided "as is" without express or implied warranty.
 *
 * METRO LINK INCORPORATED DISCLAIMS ALL WARRANTIES WITH REGARD
 * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS, IN NO EVENT SHALL METRO LINK INCORPORATED BE
 * LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
 * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 *
 * This file is derived in part from the original xf86_PCI.h that included
 * following copyright message:
 *
 * Copyright 1995 by Robin Cutshaw <robin@XFree86.Org>
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the names of the above listed copyright holder(s)
 * not be used in advertising or publicity pertaining to distribution of 
 * the software without specific, written prior permission.  The above listed
 * copyright holder(s) make(s) no representations about the suitability of this 
 * software for any purpose.  It is provided "as is" without express or 
 * implied warranty.
 *
 * THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM(S) ALL WARRANTIES WITH REGARD 
 * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 
 * AND FITNESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE 
 * LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY 
 * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER 
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 */

/*
 * This file contains just the public interface to the PCI code.
 * Drivers should use this file rather than Pci.h.
 */

#ifndef _XF86PCI_H
#define _XF86PCI_H 1
#include "Xarch.h"
#include "Xfuncproto.h"
#include "misc.h"

/*
 * PCI cfg space definitions (e.g. stuff right out of the PCI spec
 */
/* Device identification register */
#define PCI_ID_REG			0x00

/* Command and status register */
#define	PCI_CMD_STAT_REG		0x04
#define PCI_CMD_BASE_REG                0x10
#define PCI_CMD_BIOS_REG                0x30
#define	PCI_CMD_MASK			0xffff
#define	PCI_CMD_IO_ENABLE		0x01
#define	PCI_CMD_MEM_ENABLE		0x02
#define	PCI_CMD_MASTER_ENABLE		0x04
#define PCI_CMD_SPECIAL_ENABLE		0x08
#define PCI_CMD_INVALIDATE_ENABLE 	0x10
#define PCI_CMD_PALETTE_ENABLE 		0x20
#define	PCI_CMD_PARITY_ENABLE		0x40
#define	PCI_CMD_STEPPING_ENABLE		0x80
#define	PCI_CMD_SERR_ENABLE		0x100
#define	PCI_CMD_BACKTOBACK_ENABLE	0x200
#define	PCI_CMD_BIOS_ENABLE             0x01

/* base class */
#define PCI_CLASS_REG			0x08
#define PCI_CLASS_MASK			0xff000000
#define PCI_CLASS_SHIFT			24
#define PCI_CLASS_EXTRACT(x)		(((x) & PCI_CLASS_MASK) >> PCI_CLASS_SHIFT)

/* base class values */
#define PCI_CLASS_PREHISTORIC		0x00
#define PCI_CLASS_MASS_STORAGE		0x01
#define PCI_CLASS_NETWORK		0x02
#define PCI_CLASS_DISPLAY		0x03
#define PCI_CLASS_MULTIMEDIA		0x04
#define PCI_CLASS_MEMORY		0x05
#define PCI_CLASS_BRIDGE		0x06
#define PCI_CLASS_COMMUNICATIONS	0x07
#define PCI_CLASS_SYSPERIPH		0x08
#define PCI_CLASS_INPUT			0x09
#define PCI_CLASS_DOCKING		0x0a
#define PCI_CLASS_PROCESSOR		0x0b
#define PCI_CLASS_SERIALBUS		0x0c
#define PCI_CLASS_WIRELESS		0x0d
#define PCI_CLASS_I2O			0x0e
#define PCI_CLASS_SATELLITE		0x0f
#define PCI_CLASS_CRYPT			0x10
#define PCI_CLASS_DATA_ACQUISTION	0x11
#define PCI_CLASS_UNDEFINED		0xff

/* sub class */
#define PCI_SUBCLASS_MASK	0x00ff0000
#define PCI_SUBCLASS_SHIFT	16
#define PCI_SUBCLASS_EXTRACT(x)	(((x) & PCI_SUBCLASS_MASK) >> PCI_SUBCLASS_SHIFT)

/* Sub class values */
/* 0x00 prehistoric subclasses */
#define PCI_SUBCLASS_PREHISTORIC_MISC	0x00
#define PCI_SUBCLASS_PREHISTORIC_VGA	0x01

/* 0x01 mass storage subclasses */
#define PCI_SUBCLASS_MASS_STORAGE_SCSI		0x00
#define PCI_SUBCLASS_MASS_STORAGE_IDE		0x01
#define PCI_SUBCLASS_MASS_STORAGE_FLOPPY	0x02
#define PCI_SUBCLASS_MASS_STORAGE_IPI		0x03
#define PCI_SUBCLASS_MASS_STORAGE_MISC		0x80

/* 0x02 network subclasses */
#define PCI_SUBCLASS_NETWORK_ETHERNET	0x00
#define PCI_SUBCLASS_NETWORK_TOKENRING	0x01
#define PCI_SUBCLASS_NETWORK_FDDI	0x02
#define PCI_SUBCLASS_NETWORK_MISC	0x80

/* 0x03 display subclasses */
#define PCI_SUBCLASS_DISPLAY_VGA	0x00
#define PCI_SUBCLASS_DISPLAY_XGA	0x01
#define PCI_SUBCLASS_DISPLAY_MISC	0x80

/* 0x04 multimedia subclasses */
#define PCI_SUBCLASS_MULTIMEDIA_VIDEO	0x00
#define PCI_SUBCLASS_MULTIMEDIA_AUDIO	0x01
#define PCI_SUBCLASS_MULTIMEDIA_MISC	0x80

/* 0x05 memory subclasses */
#define PCI_SUBCLASS_MEMORY_RAM		0x00
#define PCI_SUBCLASS_MEMORY_FLASH	0x01
#define PCI_SUBCLASS_MEMORY_MISC	0x80

/* 0x06 bridge subclasses */
#define PCI_SUBCLASS_BRIDGE_HOST	0x00
#define PCI_SUBCLASS_BRIDGE_ISA		0x01
#define PCI_SUBCLASS_BRIDGE_EISA	0x02
#define PCI_SUBCLASS_BRIDGE_MC		0x03
#define PCI_SUBCLASS_BRIDGE_PCI		0x04
#define PCI_SUBCLASS_BRIDGE_PCMCIA	0x05
#define PCI_SUBCLASS_BRIDGE_NUBUS	0x06
#define PCI_SUBCLASS_BRIDGE_CARDBUS	0x07
#define PCI_SUBCLASS_BRIDGE_RACEWAY	0x08
#define PCI_SUBCLASS_BRIDGE_MISC	0x80
#define PCI_IF_BRIDGE_PCI_SUBTRACTIVE   0x01

/* 0x07 communications controller subclasses */
#define PCI_SUBCLASS_COMMUNICATIONS_SERIAL	0x00
#define PCI_SUBCLASS_COMMUNICATIONS_PARALLEL	0x01
#define PCI_SUBCLASS_COMMUNICATIONS_MULTISERIAL	0x02
#define PCI_SUBCLASS_COMMUNICATIONS_MODEM	0x03
#define PCI_SUBCLASS_COMMUNICATIONS_MISC	0x80

/* 0x08 generic system peripherals subclasses */
#define PCI_SUBCLASS_SYSPERIPH_PIC	0x00
#define PCI_SUBCLASS_SYSPERIPH_DMA	0x01
#define PCI_SUBCLASS_SYSPERIPH_TIMER	0x02
#define PCI_SUBCLASS_SYSPERIPH_RTC	0x03
#define PCI_SUBCLASS_SYSPERIPH_HOTPCI	0x04
#define PCI_SUBCLASS_SYSPERIPH_MISC	0x80

/* 0x09 input device subclasses */
#define PCI_SUBCLASS_INPUT_KEYBOARD	0x00
#define PCI_SUBCLASS_INPUT_DIGITIZER	0x01
#define PCI_SUBCLASS_INPUT_MOUSE	0x02
#define PCI_SUBCLASS_INPUT_SCANNER	0x03
#define PCI_SUBCLASS_INPUT_GAMEPORT	0x04
#define PCI_SUBCLASS_INPUT_MISC		0x80

/* 0x0a docking station subclasses */
#define PCI_SUBCLASS_DOCKING_GENERIC	0x00
#define PCI_SUBCLASS_DOCKING_MISC	0x80

/* 0x0b processor subclasses */
#define PCI_SUBCLASS_PROCESSOR_386	0x00
#define PCI_SUBCLASS_PROCESSOR_486	0x01
#define PCI_SUBCLASS_PROCESSOR_PENTIUM	0x02
#define PCI_SUBCLASS_PROCESSOR_ALPHA	0x10
#define PCI_SUBCLASS_PROCESSOR_POWERPC	0x20
#define PCI_SUBCLASS_PROCESSOR_MIPS	0x30
#define PCI_SUBCLASS_PROCESSOR_COPROC	0x40

/* 0x0c serial bus controller subclasses */
#define PCI_SUBCLASS_SERIAL_FIREWIRE		0x00
#define PCI_SUBCLASS_SERIAL_ACCESS		0x01
#define PCI_SUBCLASS_SERIAL_SSA			0x02
#define PCI_SUBCLASS_SERIAL_USB			0x03
#define PCI_SUBCLASS_SERIAL_FIBRECHANNEL	0x04
#define PCI_SUBCLASS_SERIAL_SMBUS		0x05

/* 0x0d wireless controller subclasses */
#define PCI_SUBCLASS_WIRELESS_IRDA		0x00
#define PCI_SUBCLASS_WIRELESS_CONSUMER_IR	0x01
#define PCI_SUBCLASS_WIRELESS_RF		0x02
#define PCI_SUBCLASS_WIRELESS_MISC		0x80

/* 0x0e intelligent I/O controller subclasses */
#define PCI_SUBCLASS_I2O_I2O		0x00

/* 0x0f satellite communications controller subclasses */
#define PCI_SUBCLASS_SATELLITE_TV	0x01
#define PCI_SUBCLASS_SATELLITE_AUDIO	0x02
#define PCI_SUBCLASS_SATELLITE_VOICE	0x03
#define PCI_SUBCLASS_SATELLITE_DATA	0x04

/* 0x10 encryption/decryption controller subclasses */
#define PCI_SUBCLASS_CRYPT_NET_COMPUTING	0x00
#define PCI_SUBCLASS_CRYPT_ENTERTAINMENT	0x10
#define PCI_SUBCLASS_CRYPT_MISC			0x80

/* 0x11 data acquisition and signal processing controller subclasses */
#define PCI_SUBCLASS_DATAACQ_DPIO	0x00
#define PCI_SUBCLASS_DATAACQ_MISC	0x80


/* Header */
#define PCI_HEADER_MISC			0x0c
#define PCI_HEADER_MULTIFUNCTION	0x00800000

/* Interrupt configration register */
#define PCI_INTERRUPT_REG		0x3c
#define PCI_INTERRUPT_PIN_MASK          0x0000ff00
#define PCI_INTERRUPT_PIN_EXTRACT(x)    ((((x) & PCI_INTERRUPT_PIN_MASK) >> 8) & 0xff)
#define PCI_INTERRUPT_PIN_NONE          0x00
#define PCI_INTERRUPT_PIN_A             0x01
#define PCI_INTERRUPT_PIN_B             0x02
#define PCI_INTERRUPT_PIN_C             0x03
#define PCI_INTERRUPT_PIN_D             0x04

#define PCI_INTERRUPT_LINE_MASK         0x000000ff
#define PCI_INTERRUPT_LINE_EXTRACT(x)   ((((x) & PCI_INTERRUPT_LINE_MASK) >> 0) & 0xff) 
#define PCI_INTERRUPT_LINE_INSERT(x,v)  (((x) & ~PCI_INTERRUPT_LINE_MASK) | ((v) << 0))

/* Base registers */
#define PCI_MAP_REG_START               0x10
#define PCI_MAP_REG_END                 0x28
#define PCI_MAP_ROM_REG			0x30

#define PCI_MAP_MEMORY                  0x00000000
#define PCI_MAP_IO                      0x00000001  

#define PCI_MAP_MEMORY_TYPE             0x00000007
#define PCI_MAP_IO_TYPE                 0x00000003

#define PCI_MAP_MEMORY_TYPE_32BIT       0x00000000
#define PCI_MAP_MEMORY_TYPE_32BIT_1M    0x00000002
#define PCI_MAP_MEMORY_TYPE_64BIT       0x00000004
#define PCI_MAP_MEMORY_TYPE_MASK        0x00000006
#define PCI_MAP_MEMORY_CACHABLE         0x00000008
#define PCI_MAP_MEMORY_ATTR_MASK	0x0000000e
#define PCI_MAP_MEMORY_ADDRESS_MASK     0xfffffff0

#define PCI_MAP_IO_ATTR_MASK		0x00000003

#define PCI_MAP_IS_IO(b) ((b) & PCI_MAP_IO)
#define PCI_MAP_IS_MEM(b) (!PCI_MAP_IS_IO(b))

#define PCI_MAP_IS64BITMEM(b) \
	(((b) & PCI_MAP_MEMORY_TYPE_MASK) == PCI_MAP_MEMORY_TYPE_64BIT)

#define PCIGETMEMORY(b) ((b) & PCI_MAP_MEMORY_ADDRESS_MASK)
#define PCIGETMEMORY64HIGH(b)  (*((CARD32*)&b + 1))
#define PCIGETMEMORY64(b) (PCIGETMEMORY(b) | ((CARD64)PCIGETMEMORY64HIGH(b) << 32))

#define PCI_MAP_IO_ADDRESS_MASK         0xfffffffc

#define PCIGETIO(b) ((b) & PCI_MAP_IO_ADDRESS_MASK)

#define PCI_MAP_ROM_DECODE_ENABLE	0x00000001
#define PCI_MAP_ROM_ADDRESS_MASK	0xfffff800

#define PCIGETROM(b) ((b) & PCI_MAP_ROM_ADDRESS_MASK)

/* PCI-PCI bridge mapping registers */
#define PCI_PCI_BRIDGE_BUS_REG          0x18
#define PCI_SUBORDINATE_BUS_MASK        0x00ff0000
#define PCI_SECONDARY_BUS_MASK          0x0000ff00
#define PCI_PRIMARY_BUS_MASK            0x000000ff

#define PCI_SUBORDINATE_BUS_EXTRACT(x)  (((x) >> 16) & 0xff)
#define PCI_SECONDARY_BUS_EXTRACT(x)    (((x) >>  8) & 0xff)
#define PCI_PRIMARY_BUS_EXTRACT(x)      (((x)      ) & 0xff)

#define PCI_PRIMARY_BUS_INSERT(x, y)    (((x) & ~PCI_PRIMARY_BUS_MASK) | ((y) << 0))
#define PCI_SECONDARY_BUS_INSERT(x, y)  (((x) & ~PCI_SECONDARY_BUS_MASK) | ((y) <<  8)) 
#define PCI_SUBORDINATE_BUS_INSERT(x, y) (((x) & ~PCI_SUBORDINATE_BUS_MASK) | (( y) << 16))

#define PCI_PCI_BRIDGE_IO_REG           0x1c
#define PCI_PCI_BRIDGE_MEM_REG          0x20
#define PCI_PCI_BRIDGE_PMEM_REG         0x24

#define PCI_PPB_IOBASE_EXTRACT(x)       (((x) << 8) & 0xFF00)
#define PCI_PPB_IOLIMIT_EXTRACT(x)      (((x) << 0) & 0xFF00)

#define PCI_PPB_MEMBASE_EXTRACT(x)      (((x) << 16) & 0xFFFF0000)
#define PCI_PPB_MEMLIMIT_EXTRACT(x)     (((x) <<  0) & 0xFFFF0000)

#define PCI_PCI_BRIDGE_CONTROL_REG         0x3E
#define PCI_PCI_BRIDGE_ISA_EN              0x04
#define PCI_PCI_BRIDGE_VGA_EN              0x08

/* Subsystem identification register */
#define PCI_SUBSYSTEM_ID_REG		0x2c

/* User defined cfg space regs */
#define PCI_REG_USERCONFIG 		0x40
#define PCI_OPTION_REG	 		0x40

/*
 * Typedefs, etc...
 */

/* Primitive Types */
typedef unsigned long ADDRESS;		/* Memory/PCI address */
typedef unsigned long PCITAG;

/*
 * PCI configuration space
 */
typedef struct pci_cfg_regs {
    /* start of official PCI config space header */
    union { 	/* Offset 0x0 - 0x3 */
	CARD32 device_vendor;
	struct {
#if X_BYTE_ORDER == X_BIG_ENDIAN		
	    CARD16 device;
	    CARD16 vendor;
#else	    
	    CARD16 vendor;
	    CARD16 device;
#endif	    
	} dv;
    } dv_id;
    
    union {    /* Offset 0x4 - 0x8 */
        CARD32 status_command;
	struct {
#if X_BYTE_ORDER == X_BIG_ENDIAN
	CARD16 status;
	CARD16 command;
#else
	CARD16 command;
	CARD16 status;
#endif		
	} sc;
    } stat_cmd;
    
    union {   /* Offset 0x8 - 0xb */
        CARD32 class_revision;
	struct {
#if X_BYTE_ORDER == X_BIG_ENDIAN		
	    CARD8 base_class;
	    CARD8 sub_class;
	    CARD8 prog_if;
	    CARD8 rev_id;
#else
	    CARD8 rev_id;
	    CARD8 prog_if;
	    CARD8 sub_class;
	    CARD8 base_class;
#endif	    
	} cr;
    } class_rev;
    
    union {	/* Offset 0xc - 0xf */
        CARD32 bist_header_latency_cache;
	struct {
#if X_BYTE_ORDER == X_BIG_ENDIAN		
	    CARD8 bist;
	    CARD8 header_type;
	    CARD8 latency_timer;
	    CARD8 cache_line_size;
#else
	    CARD8 cache_line_size;
	    CARD8 latency_timer;
	    CARD8 header_type;
	    CARD8 bist;
#endif	    
	} bhlc;
    } bhlc;
    
    union {	/* Offset 0x10 - 0x27 */ 
	struct {	/* header type 0 */
	    CARD32 dv_base0;
	    CARD32 dv_base1;
	    CARD32 dv_base2;
	    CARD32 dv_base3;
	    CARD32 dv_base4;
	    CARD32 dv_base5;
	} dv;
	struct {	/* header type 1 */
	    CARD32 bg_rsrvd[2];
#if X_BYTE_ORDER == X_BIG_ENDIAN	    
	    CARD8 secondary_latency_timer;
	    CARD8 subordinate_bus_number;
	    CARD8 secondary_bus_number;
	    CARD8 primary_bus_number;

	    CARD16 secondary_status;
	    CARD8 io_limit;
	    CARD8 io_base;
	    
	    CARD16 mem_limit;
	    CARD16 mem_base;

	    CARD16 prefetch_mem_limit;
	    CARD16 prefetch_mem_base;
#else
	    CARD8 primary_bus_number;
	    CARD8 secondary_bus_number;
	    CARD8 subordinate_bus_number;
	    CARD8 secondary_latency_timer;
	    
	    CARD8 io_base;
	    CARD8 io_limit;
	    CARD16 secondary_status;
	    
	    CARD16 mem_base;
	    CARD16 mem_limit;
	    
	    CARD16 prefetch_mem_base;
	    CARD16 prefetch_mem_limit;
#endif	    
	} bg;
    } bc;
    union {	/* Offset 0x28 - 0x2b */
	CARD32 rsvd1;
        CARD32 pftch_umem_base;
	CARD32 cardbus_cis_ptr;
    } um_c_cis;
    union { 	/* Offset 0x2c - 0x2f */
	CARD32 subsys_card_vendor;
        CARD32 pftch_umem_limit;
	CARD32 rsvd2;
	struct {
#if X_BYTE_ORDER == X_BIG_ENDIAN		
	    CARD16 subsys_card;
	    CARD16 subsys_vendor;
#else	    
	    CARD16 subsys_vendor;
	    CARD16 subsys_card;
#endif	    
	} ssys;
    } um_ssys_id;
    union {             /* Offset 0x30 - 0x33 */
        CARD32 baserom;	
        struct {
#if X_BYTE_ORDER == X_BIG_ENDIAN
	    CARD16 io_ulimit;
	    CARD16 io_ubase;
#else
	    CARD16 io_ubase;
	    CARD16 io_ulimit;
#endif
	} b_u_io;
    } uio_rom;
    CARD32 rsvd3;	/* Offset 0x34 - 0x37 */
    CARD32 rsvd4;	/* Offset 0x38 - 0x3b */
    union {	/* Offset 0x3c - 0x3f */
	union {	/* header type 0 */
            CARD32 max_min_ipin_iline;
	    struct {
#if X_BYTE_ORDER == X_BIG_ENDIAN		
		CARD8 max_lat;
		CARD8 min_gnt;
		CARD8 int_pin;
		CARD8 int_line;
#else
		CARD8 int_line;
		CARD8 int_pin;
		CARD8 min_gnt;
		CARD8 max_lat;
#endif	    
	    } mmii;
	} mmii;
	struct {	/* header type 1 */
#if X_BYTE_ORDER == X_BIG_ENDIAN
	    CARD8 rsvd4;
	    CARD8 bridge_control;
	    CARD8 rsvd2;
	    CARD8 rsvd1;
#else
	    CARD8 rsvd1;
	    CARD8 rsvd2;
	    CARD8 bridge_control;
	    CARD8 rsvd4;
#endif
	} bctrl;
    } bm;
    union {    /* Offset 0x40 - 0xff */
	    CARD32 dwords[48];
	    CARD32 bytes[192];
    } devspf;
} pciCfgRegs;

typedef union pci_cfg_spc {
	pciCfgRegs regs;
	CARD32     dwords[256/sizeof(CARD32)];  
	CARD8      bytes[256/sizeof(CARD8)];
} pciCfgSpc;

/*
 * Data structure returned by xf86scanpci including contents of
 * PCI config space header
 */
typedef struct pci_device {
    PCITAG    tag;
    int       busnum;
    int       devnum;
    int       funcnum;
    pciCfgSpc cfgspc;
    int       basesize[7];	/* number of bits in base addr allocations */
    Bool      minBasesize;
    CARD32    listed_class;
} pciDevice, *pciConfigPtr;

typedef enum {
    WRITE,
    READ,
    SET_BITS
} pciFunc;

typedef enum {
    PCI_MEM,
    PCI_MEM_SIZE,
    PCI_MEM_SPARSE_BASE,
    PCI_MEM_SPARSE_MASK,
    PCI_IO,
    PCI_IO_SIZE,
    PCI_IO_SPARSE_BASE,
    PCI_IO_SPARSE_MASK
} PciAddrType;

#define pci_device_vendor	      cfgspc.regs.dv_id.device_vendor
#define pci_vendor		      cfgspc.regs.dv_id.dv.vendor
#define pci_device		      cfgspc.regs.dv_id.dv.device
#define pci_status_command	      cfgspc.regs.stat_cmd.status_command
#define pci_command		      cfgspc.regs.stat_cmd.sc.command
#define pci_status		      cfgspc.regs.stat_cmd.sc.status
#define pci_class_revision	      cfgspc.regs.class_rev.class_revision
#define pci_rev_id		      cfgspc.regs.class_rev.cr.rev_id
#define pci_prog_if		      cfgspc.regs.class_rev.cr.prog_if
#define pci_sub_class		      cfgspc.regs.class_rev.cr.sub_class
#define pci_base_class		      cfgspc.regs.class_rev.cr.base_class
#define pci_bist_header_latency_cache cfgspc.regs.bhlc.bist_header_latency_cache
#define pci_cache_line_size	      cfgspc.regs.bhlc.bhlc.cache_line_size
#define pci_latency_timer	      cfgspc.regs.bhlc.bhlc.latency_timer
#define pci_header_type		      cfgspc.regs.bhlc.bhlc.header_type
#define pci_bist		      cfgspc.regs.bhlc.bhlc.bist
#define pci_base0		      cfgspc.regs.bc.dv.dv_base0
#define pci_base1		      cfgspc.regs.bc.dv.dv_base1
#define pci_base2		      cfgspc.regs.bc.dv.dv_base2
#define pci_base3		      cfgspc.regs.bc.dv.dv_base3
#define pci_base4		      cfgspc.regs.bc.dv.dv_base4
#define pci_base5		      cfgspc.regs.bc.dv.dv_base5
#define pci_cardbus_cis_ptr	      cfgspc.regs.umem_c_cis.cardbus_cis_ptr
#define pci_subsys_card_vendor	      cfgspc.regs.um_ssys_id.subsys_card_vendor
#define pci_subsys_vendor	      cfgspc.regs.um_ssys_id.ssys.subsys_vendor
#define pci_subsys_card		      cfgspc.regs.um_ssys_id.ssys.subsys_card
#define pci_baserom		      cfgspc.regs.uio_rom.baserom
#define pci_primary_bus_number	      cfgspc.regs.bc.bg.primary_bus_number
#define pci_secondary_bus_number      cfgspc.regs.bc.bg.secondary_bus_number
#define pci_subordinate_bus_number    cfgspc.regs.bc.bg.subordinate_bus_number
#define pci_secondary_latency_timer   cfgspc.regs.bc.bg.secondary_latency_timer
#define pci_io_base		      cfgspc.regs.bc.bg.io_base
#define pci_io_limit		      cfgspc.regs.bc.bg.io_limit
#define pci_secondary_status	      cfgspc.regs.bc.bg.secondary_status
#define pci_mem_base		      cfgspc.regs.bc.bg.mem_base
#define pci_mem_limit		      cfgspc.regs.bc.bg.mem_limit
#define pci_prefetch_mem_base	      cfgspc.regs.bc.bg.prefetch_mem_base
#define pci_prefetch_mem_limit	      cfgspc.regs.bc.bg.prefetch_mem_limit
#define pci_rsvd1		      cfgspc.regs.um_c_cis.rsvd1
#define pci_rsvd2		      cfgspc.regs.um_ssys_id.rsvd2
#define pci_prefetch_upper_mem_base   cfgspc.regs.um_c_cis.pftch_umem_base
#define pci_prefetch_upper_mem_limit  cfgspc.regs.um_ssys_id.pftch_umem_limit
#define pci_upper_io_base             cfgspc.regs.uio_rom.b_u_io.io_ubase
#define pci_upper_io_limit            cfgspc.regs.uio_rom.b_u_io.io_ulimit
#define pci_int_line		      cfgspc.regs.bm.mmii.mmii.int_line
#define pci_int_pin		      cfgspc.regs.bm.mmii.mmii.int_pin
#define pci_min_gnt		      cfgspc.regs.bm.mmii.mmii.min_gnt
#define pci_max_lat		      cfgspc.regs.bm.mmii.mmii.max_lat
#define pci_max_min_ipin_iline	      cfgspc.regs.bm.mmii.max_min_ipin_iline
#define pci_bridge_control	      cfgspc.regs.bm.bctrl.bridge_control
#define pci_user_config		      cfgspc.regs.devspf.dwords[0]
#define pci_user_config_0	      cfgspc.regs.devspf.bytes[0]
#define pci_user_config_1	      cfgspc.regs.devspf.bytes[1]
#define pci_user_config_2	      cfgspc.regs.devspf.bytes[2]
#define pci_user_config_3	      cfgspc.regs.devspf.bytes[3]

/* Public PCI access functions */
void          pciInit(void);
PCITAG        pciFindFirst(CARD32 id, CARD32 mask);
PCITAG        pciFindNext(void);
CARD32        pciReadLong(PCITAG tag, int offset);
CARD16        pciReadWord(PCITAG tag, int offset);
CARD8         pciReadByte(PCITAG tag, int offset);
void          pciWriteLong(PCITAG tag, int offset, CARD32 val);
void          pciWriteWord(PCITAG tag, int offset, CARD16 val);
void          pciWriteByte(PCITAG tag, int offset, CARD8 val);
void          pciSetBitsLong(PCITAG tag, int offset, CARD32 mask, CARD32 val);
void          pciSetBitsByte(PCITAG tag, int offset, CARD8 mask, CARD8 val);
pointer       pciLongFunc(PCITAG tag, pciFunc func);
ADDRESS       pciBusAddrToHostAddr(PCITAG tag, PciAddrType type, ADDRESS addr);
ADDRESS       pciHostAddrToBusAddr(PCITAG tag, PciAddrType type, ADDRESS addr);
PCITAG        pciTag(int busnum, int devnum, int funcnum);
int           pciGetBaseSize(PCITAG tag, int indx, Bool destructive, Bool *min);
CARD32        pciCheckForBrokenBase(PCITAG tag,int basereg);
pointer       xf86MapPciMem(int ScreenNum, int Flags, PCITAG Tag,
				ADDRESS Base, unsigned long Size);
int           xf86ReadPciBIOS(unsigned long Offset, PCITAG Tag, int basereg,
				unsigned char *Buf, int Len);
pciConfigPtr *xf86scanpci(int flags);

/* Old sytle PCI access functions (for compatibility) */
#if 0
void          xf86writepci(int, int, int, int, int, CARD32, CARD32);
#endif

extern int pciNumBuses;

#endif /* _XF86PCI_H */