[pciutils.git] / lib / header.h

/*
 *      $Id: header.h,v 1.6 2000/05/01 21:34:49 mj Exp $
 *
 *      The PCI Library -- PCI Header Structure (extracted from <linux/pci.h>)
 *
 *      Copyright (c) 1997--1999 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
 *
 *      Can be freely distributed and used under the terms of the GNU GPL.
 */

/*
 * 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) */
/* 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_CAP_VER_MASK    0x0007  /* Version (2=PM1.1) */
#define  PCI_PM_CAP_PME_CLOCK   0x0008  /* Clock required for PME generation */
#define  PCI_PM_CAP_DSI         0x0020  /* Device specific initialization required */
#define  PCI_PM_CAP_AUX_C_MASK  0x01c0  /* Maximum aux current required in D3cold */
#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_D0      0x0800  /* PME can be asserted from D0 */
#define  PCI_PM_CAP_PME_D1      0x1000  /* PME can be asserted from D1 */
#define  PCI_PM_CAP_PME_D2      0x2000  /* PME can be asserted from D2 */
#define  PCI_PM_CAP_PME_D3_HOT  0x4000  /* PME can be asserted from D3hot */
#define  PCI_PM_CAP_PME_D3_COLD 0x8000  /* PME can be asserted from D3cold */
#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  /* PM table data index */
#define  PCI_PM_CTRL_DATA_SCALE_MASK    0x6000  /* PM table data scaling factor */
#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    /* If bridge enters D3hot, bus enters: 0=B3, 1=B2 */
#define  PCI_PM_BPCC_ENABLE     0x80    /* Secondary bus is power managed */
#define PCI_PM_DATA_REGISTER    7       /* PM table contents read here */
#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 2x rate */
#define  PCI_AGP_COMMAND_RATE1  0x0001  /* Use 1x 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 */

/*
 * 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)

/* Device classes and subclasses */

#define PCI_CLASS_NOT_DEFINED           0x0000
#define PCI_CLASS_NOT_DEFINED_VGA       0x0001

#define PCI_BASE_CLASS_STORAGE          0x01
#define PCI_CLASS_STORAGE_SCSI          0x0100
#define PCI_CLASS_STORAGE_IDE           0x0101
#define PCI_CLASS_STORAGE_FLOPPY        0x0102
#define PCI_CLASS_STORAGE_IPI           0x0103
#define PCI_CLASS_STORAGE_RAID          0x0104
#define PCI_CLASS_STORAGE_OTHER         0x0180

#define PCI_BASE_CLASS_NETWORK          0x02
#define PCI_CLASS_NETWORK_ETHERNET      0x0200
#define PCI_CLASS_NETWORK_TOKEN_RING    0x0201
#define PCI_CLASS_NETWORK_FDDI          0x0202
#define PCI_CLASS_NETWORK_ATM           0x0203
#define PCI_CLASS_NETWORK_OTHER         0x0280

#define PCI_BASE_CLASS_DISPLAY          0x03
#define PCI_CLASS_DISPLAY_VGA           0x0300
#define PCI_CLASS_DISPLAY_XGA           0x0301
#define PCI_CLASS_DISPLAY_OTHER         0x0380

#define PCI_BASE_CLASS_MULTIMEDIA       0x04
#define PCI_CLASS_MULTIMEDIA_VIDEO      0x0400
#define PCI_CLASS_MULTIMEDIA_AUDIO      0x0401
#define PCI_CLASS_MULTIMEDIA_OTHER      0x0480

#define PCI_BASE_CLASS_MEMORY           0x05
#define  PCI_CLASS_MEMORY_RAM           0x0500
#define  PCI_CLASS_MEMORY_FLASH         0x0501
#define  PCI_CLASS_MEMORY_OTHER         0x0580

#define PCI_BASE_CLASS_BRIDGE           0x06
#define  PCI_CLASS_BRIDGE_HOST          0x0600
#define  PCI_CLASS_BRIDGE_ISA           0x0601
#define  PCI_CLASS_BRIDGE_EISA          0x0602
#define  PCI_CLASS_BRIDGE_MC            0x0603
#define  PCI_CLASS_BRIDGE_PCI           0x0604
#define  PCI_CLASS_BRIDGE_PCMCIA        0x0605
#define  PCI_CLASS_BRIDGE_NUBUS         0x0606
#define  PCI_CLASS_BRIDGE_CARDBUS       0x0607
#define  PCI_CLASS_BRIDGE_OTHER         0x0680

#define PCI_BASE_CLASS_COMMUNICATION    0x07
#define PCI_CLASS_COMMUNICATION_SERIAL  0x0700
#define PCI_CLASS_COMMUNICATION_PARALLEL 0x0701
#define PCI_CLASS_COMMUNICATION_OTHER   0x0780

#define PCI_BASE_CLASS_SYSTEM           0x08
#define PCI_CLASS_SYSTEM_PIC            0x0800
#define PCI_CLASS_SYSTEM_DMA            0x0801
#define PCI_CLASS_SYSTEM_TIMER          0x0802
#define PCI_CLASS_SYSTEM_RTC            0x0803
#define PCI_CLASS_SYSTEM_OTHER          0x0880

#define PCI_BASE_CLASS_INPUT            0x09
#define PCI_CLASS_INPUT_KEYBOARD        0x0900
#define PCI_CLASS_INPUT_PEN             0x0901
#define PCI_CLASS_INPUT_MOUSE           0x0902
#define PCI_CLASS_INPUT_OTHER           0x0980

#define PCI_BASE_CLASS_DOCKING          0x0a
#define PCI_CLASS_DOCKING_GENERIC       0x0a00
#define PCI_CLASS_DOCKING_OTHER         0x0a01

#define PCI_BASE_CLASS_PROCESSOR        0x0b
#define PCI_CLASS_PROCESSOR_386         0x0b00
#define PCI_CLASS_PROCESSOR_486         0x0b01
#define PCI_CLASS_PROCESSOR_PENTIUM     0x0b02
#define PCI_CLASS_PROCESSOR_ALPHA       0x0b10
#define PCI_CLASS_PROCESSOR_POWERPC     0x0b20
#define PCI_CLASS_PROCESSOR_CO          0x0b40

#define PCI_BASE_CLASS_SERIAL           0x0c
#define PCI_CLASS_SERIAL_FIREWIRE       0x0c00
#define PCI_CLASS_SERIAL_ACCESS         0x0c01
#define PCI_CLASS_SERIAL_SSA            0x0c02
#define PCI_CLASS_SERIAL_USB            0x0c03
#define PCI_CLASS_SERIAL_FIBER          0x0c04

#define PCI_CLASS_OTHERS                0xff

/* Several ID's we need in the library */

#define PCI_VENDOR_ID_INTEL             0x8086
#define PCI_VENDOR_ID_COMPAQ            0x0e11