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/*
* $Id: pci.h,v 1.2 2001/10/31 14:49:37 arjanv Exp $
*
* PCI defines and function prototypes
* Copyright 1994, Drew Eckhardt
* Copyright 1997--1999 Martin Mares <mj@suse.cz>
*
* For more information, please consult the following manuals (look at
* http://www.pcisig.com/ for how to get them):
*
* PCI BIOS Specification
* PCI Local Bus Specification
* PCI to PCI Bridge Specification
* PCI System Design Guide
*/
#ifndef LINUX_PCI_H
#define LINUX_PCI_H
/*
* Under PCI, each device has 256 bytes of configuration address space,
* of which the first 64 bytes are standardized as follows:
*/
#define PCI_VENDOR_ID 0x00 /* 16 bits */
#define PCI_DEVICE_ID 0x02 /* 16 bits */
#define PCI_COMMAND 0x04 /* 16 bits */
#define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */
#define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */
#define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */
#define PCI_COMMAND_SPECIAL 0x8 /* Enable response to special cycles */
#define PCI_COMMAND_INVALIDATE 0x10 /* Use memory write and invalidate */
#define PCI_COMMAND_VGA_PALETTE 0x20 /* Enable palette snooping */
#define PCI_COMMAND_PARITY 0x40 /* Enable parity checking */
#define PCI_COMMAND_WAIT 0x80 /* Enable address/data stepping */
#define PCI_COMMAND_SERR 0x100 /* Enable SERR */
#define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */
#define PCI_STATUS 0x06 /* 16 bits */
#define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */
#define PCI_STATUS_66MHZ 0x20 /* Support 66 Mhz PCI 2.1 bus */
#define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */
#define PCI_STATUS_FAST_BACK 0x80 /* Accept fast-back to back */
#define PCI_STATUS_PARITY 0x100 /* Detected parity error */
#define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */
#define PCI_STATUS_DEVSEL_FAST 0x000
#define PCI_STATUS_DEVSEL_MEDIUM 0x200
#define PCI_STATUS_DEVSEL_SLOW 0x400
#define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */
#define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */
#define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */
#define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */
#define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */
#define PCI_CLASS_REVISION 0x08 /* High 24 bits are class, low 8
revision */
#define PCI_REVISION_ID 0x08 /* Revision ID */
#define PCI_CLASS_PROG 0x09 /* Reg. Level Programming Interface */
#define PCI_CLASS_DEVICE 0x0a /* Device class */
#define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */
#define PCI_LATENCY_TIMER 0x0d /* 8 bits */
#define PCI_HEADER_TYPE 0x0e /* 8 bits */
#define PCI_HEADER_TYPE_NORMAL 0
#define PCI_HEADER_TYPE_BRIDGE 1
#define PCI_HEADER_TYPE_CARDBUS 2
#define PCI_BIST 0x0f /* 8 bits */
#define PCI_BIST_CODE_MASK 0x0f /* Return result */
#define PCI_BIST_START 0x40 /* 1 to start BIST, 2 secs or less */
#define PCI_BIST_CAPABLE 0x80 /* 1 if BIST capable */
/*
* Base addresses specify locations in memory or I/O space.
* Decoded size can be determined by writing a value of
* 0xffffffff to the register, and reading it back. Only
* 1 bits are decoded.
*/
#define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */
#define PCI_BASE_ADDRESS_1 0x14 /* 32 bits [htype 0,1 only] */
#define PCI_BASE_ADDRESS_2 0x18 /* 32 bits [htype 0 only] */
#define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */
#define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */
#define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */
#define PCI_BASE_ADDRESS_SPACE 0x01 /* 0 = memory, 1 = I/O */
#define PCI_BASE_ADDRESS_SPACE_IO 0x01
#define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00
#define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06
#define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */
#define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */
#define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */
#define PCI_BASE_ADDRESS_MEM_PREFETCH 0x08 /* prefetchable? */
#define PCI_BASE_ADDRESS_MEM_MASK (~0x0fUL)
#define PCI_BASE_ADDRESS_IO_MASK (~0x03UL)
/* bit 1 is reserved if address_space = 1 */
/* Header type 0 (normal devices) */
#define PCI_CARDBUS_CIS 0x28
#define PCI_SUBSYSTEM_VENDOR_ID 0x2c
#define PCI_SUBSYSTEM_ID 0x2e
#define PCI_ROM_ADDRESS 0x30 /* Bits 31..11 are address, 10..1 reserved */
#define PCI_ROM_ADDRESS_ENABLE 0x01
#define PCI_ROM_ADDRESS_MASK (~0x7ffUL)
#define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */
/* 0x35-0x3b are reserved */
#define PCI_INTERRUPT_LINE 0x3c /* 8 bits */
#define PCI_INTERRUPT_PIN 0x3d /* 8 bits */
#define PCI_MIN_GNT 0x3e /* 8 bits */
#define PCI_MAX_LAT 0x3f /* 8 bits */
/* Header type 1 (PCI-to-PCI bridges) */
#define PCI_PRIMARY_BUS 0x18 /* Primary bus number */
#define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */
#define PCI_SUBORDINATE_BUS 0x1a /* Highest bus number behind the bridge */
#define PCI_SEC_LATENCY_TIMER 0x1b /* Latency timer for secondary interface */
#define PCI_IO_BASE 0x1c /* I/O range behind the bridge */
#define PCI_IO_LIMIT 0x1d
#define PCI_IO_RANGE_TYPE_MASK 0x0f /* I/O bridging type */
#define PCI_IO_RANGE_TYPE_16 0x00
#define PCI_IO_RANGE_TYPE_32 0x01
#define PCI_IO_RANGE_MASK ~0x0f
#define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */
#define PCI_MEMORY_BASE 0x20 /* Memory range behind */
#define PCI_MEMORY_LIMIT 0x22
#define PCI_MEMORY_RANGE_TYPE_MASK 0x0f
#define PCI_MEMORY_RANGE_MASK ~0x0f
#define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */
#define PCI_PREF_MEMORY_LIMIT 0x26
#define PCI_PREF_RANGE_TYPE_MASK 0x0f
#define PCI_PREF_RANGE_TYPE_32 0x00
#define PCI_PREF_RANGE_TYPE_64 0x01
#define PCI_PREF_RANGE_MASK ~0x0f
#define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */
#define PCI_PREF_LIMIT_UPPER32 0x2c
#define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */
#define PCI_IO_LIMIT_UPPER16 0x32
/* 0x34 same as for htype 0 */
/* 0x35-0x3b is reserved */
#define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */
/* 0x3c-0x3d are same as for htype 0 */
#define PCI_BRIDGE_CONTROL 0x3e
#define PCI_BRIDGE_CTL_PARITY 0x01 /* Enable parity detection on secondary interface */
#define PCI_BRIDGE_CTL_SERR 0x02 /* The same for SERR forwarding */
#define PCI_BRIDGE_CTL_NO_ISA 0x04 /* Disable bridging of ISA ports */
#define PCI_BRIDGE_CTL_VGA 0x08 /* Forward VGA addresses */
#define PCI_BRIDGE_CTL_MASTER_ABORT 0x20 /* Report master aborts */
#define PCI_BRIDGE_CTL_BUS_RESET 0x40 /* Secondary bus reset */
#define PCI_BRIDGE_CTL_FAST_BACK 0x80 /* Fast Back2Back enabled on secondary interface */
/* Header type 2 (CardBus bridges) */
#define PCI_CB_CAPABILITY_LIST 0x14
/* 0x15 reserved */
#define PCI_CB_SEC_STATUS 0x16 /* Secondary status */
#define PCI_CB_PRIMARY_BUS 0x18 /* PCI bus number */
#define PCI_CB_CARD_BUS 0x19 /* CardBus bus number */
#define PCI_CB_SUBORDINATE_BUS 0x1a /* Subordinate bus number */
#define PCI_CB_LATENCY_TIMER 0x1b /* CardBus latency timer */
#define PCI_CB_MEMORY_BASE_0 0x1c
#define PCI_CB_MEMORY_LIMIT_0 0x20
#define PCI_CB_MEMORY_BASE_1 0x24
#define PCI_CB_MEMORY_LIMIT_1 0x28
#define PCI_CB_IO_BASE_0 0x2c
#define PCI_CB_IO_BASE_0_HI 0x2e
#define PCI_CB_IO_LIMIT_0 0x30
#define PCI_CB_IO_LIMIT_0_HI 0x32
#define PCI_CB_IO_BASE_1 0x34
#define PCI_CB_IO_BASE_1_HI 0x36
#define PCI_CB_IO_LIMIT_1 0x38
#define PCI_CB_IO_LIMIT_1_HI 0x3a
#define PCI_CB_IO_RANGE_MASK ~0x03
/* 0x3c-0x3d are same as for htype 0 */
#define PCI_CB_BRIDGE_CONTROL 0x3e
#define PCI_CB_BRIDGE_CTL_PARITY 0x01 /* Similar to standard bridge control register */
#define PCI_CB_BRIDGE_CTL_SERR 0x02
#define PCI_CB_BRIDGE_CTL_ISA 0x04
#define PCI_CB_BRIDGE_CTL_VGA 0x08
#define PCI_CB_BRIDGE_CTL_MASTER_ABORT 0x20
#define PCI_CB_BRIDGE_CTL_CB_RESET 0x40 /* CardBus reset */
#define PCI_CB_BRIDGE_CTL_16BIT_INT 0x80 /* Enable interrupt for 16-bit cards */
#define PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 0x100 /* Prefetch enable for both memory regions */
#define PCI_CB_BRIDGE_CTL_PREFETCH_MEM1 0x200
#define PCI_CB_BRIDGE_CTL_POST_WRITES 0x400
#define PCI_CB_SUBSYSTEM_VENDOR_ID 0x40
#define PCI_CB_SUBSYSTEM_ID 0x42
#define PCI_CB_LEGACY_MODE_BASE 0x44 /* 16-bit PC Card legacy mode base address (ExCa) */
/* 0x48-0x7f reserved */
/* Capability lists */
#define PCI_CAP_LIST_ID 0 /* Capability ID */
#define PCI_CAP_ID_PM 0x01 /* Power Management */
#define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */
#define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */
#define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */
#define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */
#define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */
#define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */
#define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */
#define PCI_CAP_SIZEOF 4
/* Power Management Registers */
#define PCI_PM_PMC 2 /* PM Capabilities Register */
#define PCI_PM_CAP_VER_MASK 0x0007 /* Version */
#define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */
#define PCI_PM_CAP_RESERVED 0x0010 /* Reserved field */
#define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */
#define PCI_PM_CAP_AUX_POWER 0x01C0 /* Auxilliary power support mask */
#define PCI_PM_CAP_D1 0x0200 /* D1 power state support */
#define PCI_PM_CAP_D2 0x0400 /* D2 power state support */
#define PCI_PM_CAP_PME 0x0800 /* PME pin supported */
#define PCI_PM_CAP_PME_MASK 0xF800 /* PME Mask of all supported states */
#define PCI_PM_CAP_PME_D0 0x0800 /* PME# from D0 */
#define PCI_PM_CAP_PME_D1 0x1000 /* PME# from D1 */
#define PCI_PM_CAP_PME_D2 0x2000 /* PME# from D2 */
#define PCI_PM_CAP_PME_D3 0x4000 /* PME# from D3 (hot) */
#define PCI_PM_CAP_PME_D3cold 0x8000 /* PME# from D3 (cold) */
#define PCI_PM_CTRL 4 /* PM control and status register */
#define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */
#define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */
#define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */
#define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */
#define PCI_PM_CTRL_PME_STATUS 0x8000 /* PME pin status */
#define PCI_PM_PPB_EXTENSIONS 6 /* PPB support extensions (??) */
#define PCI_PM_PPB_B2_B3 0x40 /* Stop clock when in D3hot (??) */
#define PCI_PM_BPCC_ENABLE 0x80 /* Bus power/clock control enable (??) */
#define PCI_PM_DATA_REGISTER 7 /* (??) */
#define PCI_PM_SIZEOF 8
/* AGP registers */
#define PCI_AGP_VERSION 2 /* BCD version number */
#define PCI_AGP_RFU 3 /* Rest of capability flags */
#define PCI_AGP_STATUS 4 /* Status register */
#define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */
#define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */
#define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */
#define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */
#define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */
#define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */
#define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */
#define PCI_AGP_COMMAND 8 /* Control register */
#define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */
#define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */
#define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */
#define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */
#define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */
#define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */
#define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 4x rate */
#define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 4x rate */
#define PCI_AGP_SIZEOF 12
/* Slot Identification */
#define PCI_SID_ESR 2 /* Expansion Slot Register */
#define PCI_SID_ESR_NSLOTS 0x1f /* Number of expansion slots available */
#define PCI_SID_ESR_FIC 0x20 /* First In Chassis Flag */
#define PCI_SID_CHASSIS_NR 3 /* Chassis Number */
/* Message Signalled Interrupts registers */
#define PCI_MSI_FLAGS 2 /* Various flags */
#define PCI_MSI_FLAGS_64BIT 0x80 /* 64-bit addresses allowed */
#define PCI_MSI_FLAGS_QSIZE 0x70 /* Message queue size configured */
#define PCI_MSI_FLAGS_QMASK 0x0e /* Maximum queue size available */
#define PCI_MSI_FLAGS_ENABLE 0x01 /* MSI feature enabled */
#define PCI_MSI_RFU 3 /* Rest of capability flags */
#define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */
#define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */
#define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */
#define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */
/* Include the ID list */
#include <linux/pci_ids.h>
/*
* The PCI interface treats multi-function devices as independent
* devices. The slot/function address of each device is encoded
* in a single byte as follows:
*
* 7:3 = slot
* 2:0 = function
*/
#define PCI_DEVFN(slot,func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
#define PCI_FUNC(devfn) ((devfn) & 0x07)
/* Ioctls for /proc/bus/pci/X/Y nodes. */
#define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8)
#define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */
#define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */
#define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */
#define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */
#endif /* LINUX_PCI_H */
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