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[seabios.git] / src / pci_regs.h

/*
 *      pci_regs.h
 *
 *      PCI standard defines
 *      Copyright 1994, Drew Eckhardt
 *      Copyright 1997--1999 Martin Mares <mj@ucw.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
 *
 *      For hypertransport information, please consult the following manuals
 *      from http://www.hypertransport.org
 *
 *      The Hypertransport I/O Link Specification
 */

#ifndef LINUX_PCI_REGS_H
#define LINUX_PCI_REGS_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_COMMAND_INTX_DISABLE 0x400 /* INTx Emulation Disable */

#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 0x0fUL  /* I/O bridging type */
#define  PCI_IO_RANGE_TYPE_16   0x00
#define  PCI_IO_RANGE_TYPE_32   0x01
#define  PCI_IO_RANGE_MASK      (~0x0fUL)
#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 0x0fUL
#define  PCI_MEMORY_RANGE_MASK  (~0x0fUL)
#define PCI_PREF_MEMORY_BASE    0x24    /* Prefetchable memory range behind */
#define PCI_PREF_MEMORY_LIMIT   0x26
#define  PCI_PREF_RANGE_TYPE_MASK 0x0fUL
#define  PCI_PREF_RANGE_TYPE_32 0x00
#define  PCI_PREF_RANGE_TYPE_64 0x01
#define  PCI_PREF_RANGE_MASK    (~0x0fUL)
#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_ISA     0x04    /* Enable ISA mode */
#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   (~0x03UL)
/* 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_ID_PCIX        0x07    /* PCI-X */
#define  PCI_CAP_ID_HT          0x08    /* HyperTransport */
#define  PCI_CAP_ID_VNDR        0x09    /* Vendor specific */
#define  PCI_CAP_ID_DBG         0x0A    /* Debug port */
#define  PCI_CAP_ID_CCRC        0x0B    /* CompactPCI Central Resource Control */
#define  PCI_CAP_ID_SHPC        0x0C    /* PCI Standard Hot-Plug Controller */
#define  PCI_CAP_ID_SSVID       0x0D    /* Bridge subsystem vendor/device ID */
#define  PCI_CAP_ID_AGP3        0x0E    /* AGP Target PCI-PCI bridge */
#define  PCI_CAP_ID_EXP         0x10    /* PCI Express */
#define  PCI_CAP_ID_MSIX        0x11    /* MSI-X */
#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_CAP_PME_SHIFT   11      /* Start of the PME Mask in PMC */
#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_NO_SOFT_RESET      0x0004  /* No reset for D3hot->D0 */
#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 2x rate */
#define  PCI_AGP_COMMAND_RATE1  0x0001  /* Use 1x rate */
#define PCI_AGP_SIZEOF          12

/* Vital Product Data */

#define PCI_VPD_ADDR            2       /* Address to access (15 bits!) */
#define  PCI_VPD_ADDR_MASK      0x7fff  /* Address mask */
#define  PCI_VPD_ADDR_F         0x8000  /* Write 0, 1 indicates completion */
#define PCI_VPD_DATA            4       /* 32-bits of data returned here */

/* 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_FLAGS_MASKBIT  0x100   /* 64-bit mask bits allowed */
#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 */
#define PCI_MSI_MASK_BIT        16      /* Mask bits register */

/* MSI-X registers (these are at offset PCI_MSIX_FLAGS) */
#define PCI_MSIX_FLAGS          2
#define  PCI_MSIX_FLAGS_QSIZE   0x7FF
#define  PCI_MSIX_FLAGS_ENABLE  (1 << 15)
#define  PCI_MSIX_FLAGS_MASKALL (1 << 14)
#define PCI_MSIX_FLAGS_BIRMASK  (7 << 0)
#define PCI_MSIX_FLAGS_BITMASK  (1 << 0)

/* CompactPCI Hotswap Register */

#define PCI_CHSWP_CSR           2       /* Control and Status Register */
#define  PCI_CHSWP_DHA          0x01    /* Device Hiding Arm */
#define  PCI_CHSWP_EIM          0x02    /* ENUM# Signal Mask */
#define  PCI_CHSWP_PIE          0x04    /* Pending Insert or Extract */
#define  PCI_CHSWP_LOO          0x08    /* LED On / Off */
#define  PCI_CHSWP_PI           0x30    /* Programming Interface */
#define  PCI_CHSWP_EXT          0x40    /* ENUM# status - extraction */
#define  PCI_CHSWP_INS          0x80    /* ENUM# status - insertion */

/* PCI-X registers */

#define PCI_X_CMD               2       /* Modes & Features */
#define  PCI_X_CMD_DPERR_E      0x0001  /* Data Parity Error Recovery Enable */
#define  PCI_X_CMD_ERO          0x0002  /* Enable Relaxed Ordering */
#define  PCI_X_CMD_READ_512     0x0000  /* 512 byte maximum read byte count */
#define  PCI_X_CMD_READ_1K      0x0004  /* 1Kbyte maximum read byte count */
#define  PCI_X_CMD_READ_2K      0x0008  /* 2Kbyte maximum read byte count */
#define  PCI_X_CMD_READ_4K      0x000c  /* 4Kbyte maximum read byte count */
#define  PCI_X_CMD_MAX_READ     0x000c  /* Max Memory Read Byte Count */
                                /* Max # of outstanding split transactions */
#define  PCI_X_CMD_SPLIT_1      0x0000  /* Max 1 */
#define  PCI_X_CMD_SPLIT_2      0x0010  /* Max 2 */
#define  PCI_X_CMD_SPLIT_3      0x0020  /* Max 3 */
#define  PCI_X_CMD_SPLIT_4      0x0030  /* Max 4 */
#define  PCI_X_CMD_SPLIT_8      0x0040  /* Max 8 */
#define  PCI_X_CMD_SPLIT_12     0x0050  /* Max 12 */
#define  PCI_X_CMD_SPLIT_16     0x0060  /* Max 16 */
#define  PCI_X_CMD_SPLIT_32     0x0070  /* Max 32 */
#define  PCI_X_CMD_MAX_SPLIT    0x0070  /* Max Outstanding Split Transactions */
#define  PCI_X_CMD_VERSION(x)   (((x) >> 12) & 3) /* Version */
#define PCI_X_STATUS            4       /* PCI-X capabilities */
#define  PCI_X_STATUS_DEVFN     0x000000ff      /* A copy of devfn */
#define  PCI_X_STATUS_BUS       0x0000ff00      /* A copy of bus nr */
#define  PCI_X_STATUS_64BIT     0x00010000      /* 64-bit device */
#define  PCI_X_STATUS_133MHZ    0x00020000      /* 133 MHz capable */
#define  PCI_X_STATUS_SPL_DISC  0x00040000      /* Split Completion Discarded */
#define  PCI_X_STATUS_UNX_SPL   0x00080000      /* Unexpected Split Completion */
#define  PCI_X_STATUS_COMPLEX   0x00100000      /* Device Complexity */
#define  PCI_X_STATUS_MAX_READ  0x00600000      /* Designed Max Memory Read Count */
#define  PCI_X_STATUS_MAX_SPLIT 0x03800000      /* Designed Max Outstanding Split Transactions */
#define  PCI_X_STATUS_MAX_CUM   0x1c000000      /* Designed Max Cumulative Read Size */
#define  PCI_X_STATUS_SPL_ERR   0x20000000      /* Rcvd Split Completion Error Msg */
#define  PCI_X_STATUS_266MHZ    0x40000000      /* 266 MHz capable */
#define  PCI_X_STATUS_533MHZ    0x80000000      /* 533 MHz capable */

/* PCI Express capability registers */

#define PCI_EXP_FLAGS           2       /* Capabilities register */
#define PCI_EXP_FLAGS_VERS      0x000f  /* Capability version */
#define PCI_EXP_FLAGS_TYPE      0x00f0  /* Device/Port type */
#define  PCI_EXP_TYPE_ENDPOINT  0x0     /* Express Endpoint */
#define  PCI_EXP_TYPE_LEG_END   0x1     /* Legacy Endpoint */
#define  PCI_EXP_TYPE_ROOT_PORT 0x4     /* Root Port */
#define  PCI_EXP_TYPE_UPSTREAM  0x5     /* Upstream Port */
#define  PCI_EXP_TYPE_DOWNSTREAM 0x6    /* Downstream Port */
#define  PCI_EXP_TYPE_PCI_BRIDGE 0x7    /* PCI/PCI-X Bridge */
#define PCI_EXP_FLAGS_SLOT      0x0100  /* Slot implemented */
#define PCI_EXP_FLAGS_IRQ       0x3e00  /* Interrupt message number */
#define PCI_EXP_DEVCAP          4       /* Device capabilities */
#define  PCI_EXP_DEVCAP_PAYLOAD 0x07    /* Max_Payload_Size */
#define  PCI_EXP_DEVCAP_PHANTOM 0x18    /* Phantom functions */
#define  PCI_EXP_DEVCAP_EXT_TAG 0x20    /* Extended tags */
#define  PCI_EXP_DEVCAP_L0S     0x1c0   /* L0s Acceptable Latency */
#define  PCI_EXP_DEVCAP_L1      0xe00   /* L1 Acceptable Latency */
#define  PCI_EXP_DEVCAP_ATN_BUT 0x1000  /* Attention Button Present */
#define  PCI_EXP_DEVCAP_ATN_IND 0x2000  /* Attention Indicator Present */
#define  PCI_EXP_DEVCAP_PWR_IND 0x4000  /* Power Indicator Present */
#define  PCI_EXP_DEVCAP_RBER    0x8000  /* Role-Based Error Reporting */
#define  PCI_EXP_DEVCAP_PWR_VAL 0x3fc0000 /* Slot Power Limit Value */
#define  PCI_EXP_DEVCAP_PWR_SCL 0xc000000 /* Slot Power Limit Scale */
#define  PCI_EXP_DEVCAP_FLR     0x10000000 /* Function Level Reset */
#define PCI_EXP_DEVCTL          8       /* Device Control */
#define  PCI_EXP_DEVCTL_CERE    0x0001  /* Correctable Error Reporting En. */
#define  PCI_EXP_DEVCTL_NFERE   0x0002  /* Non-Fatal Error Reporting Enable */
#define  PCI_EXP_DEVCTL_FERE    0x0004  /* Fatal Error Reporting Enable */
#define  PCI_EXP_DEVCTL_URRE    0x0008  /* Unsupported Request Reporting En. */
#define  PCI_EXP_DEVCTL_RELAX_EN 0x0010 /* Enable relaxed ordering */
#define  PCI_EXP_DEVCTL_PAYLOAD 0x00e0  /* Max_Payload_Size */
#define  PCI_EXP_DEVCTL_EXT_TAG 0x0100  /* Extended Tag Field Enable */
#define  PCI_EXP_DEVCTL_PHANTOM 0x0200  /* Phantom Functions Enable */
#define  PCI_EXP_DEVCTL_AUX_PME 0x0400  /* Auxiliary Power PM Enable */
#define  PCI_EXP_DEVCTL_NOSNOOP_EN 0x0800  /* Enable No Snoop */
#define  PCI_EXP_DEVCTL_READRQ  0x7000  /* Max_Read_Request_Size */
#define  PCI_EXP_DEVCTL_BCR_FLR 0x8000  /* Bridge Configuration Retry / FLR */
#define PCI_EXP_DEVSTA          10      /* Device Status */
#define  PCI_EXP_DEVSTA_CED     0x01    /* Correctable Error Detected */
#define  PCI_EXP_DEVSTA_NFED    0x02    /* Non-Fatal Error Detected */
#define  PCI_EXP_DEVSTA_FED     0x04    /* Fatal Error Detected */
#define  PCI_EXP_DEVSTA_URD     0x08    /* Unsupported Request Detected */
#define  PCI_EXP_DEVSTA_AUXPD   0x10    /* AUX Power Detected */
#define  PCI_EXP_DEVSTA_TRPND   0x20    /* Transactions Pending */
#define PCI_EXP_LNKCAP          12      /* Link Capabilities */
#define  PCI_EXP_LNKCAP_ASPMS   0xc00   /* ASPM Support */
#define  PCI_EXP_LNKCAP_L0SEL   0x7000  /* L0s Exit Latency */
#define  PCI_EXP_LNKCAP_L1EL    0x38000 /* L1 Exit Latency */
#define  PCI_EXP_LNKCAP_CLKPM   0x40000 /* L1 Clock Power Management */
#define PCI_EXP_LNKCTL          16      /* Link Control */
#define  PCI_EXP_LNKCTL_RL      0x20    /* Retrain Link */
#define  PCI_EXP_LNKCTL_CCC     0x40    /* Common Clock COnfiguration */
#define  PCI_EXP_LNKCTL_CLKREQ_EN 0x100 /* Enable clkreq */
#define PCI_EXP_LNKSTA          18      /* Link Status */
#define  PCI_EXP_LNKSTA_LT      0x800   /* Link Training */
#define  PCI_EXP_LNKSTA_SLC     0x1000  /* Slot Clock Configuration */
#define PCI_EXP_SLTCAP          20      /* Slot Capabilities */
#define PCI_EXP_SLTCTL          24      /* Slot Control */
#define PCI_EXP_SLTSTA          26      /* Slot Status */
#define PCI_EXP_RTCTL           28      /* Root Control */
#define  PCI_EXP_RTCTL_SECEE    0x01    /* System Error on Correctable Error */
#define  PCI_EXP_RTCTL_SENFEE   0x02    /* System Error on Non-Fatal Error */
#define  PCI_EXP_RTCTL_SEFEE    0x04    /* System Error on Fatal Error */
#define  PCI_EXP_RTCTL_PMEIE    0x08    /* PME Interrupt Enable */
#define  PCI_EXP_RTCTL_CRSSVE   0x10    /* CRS Software Visibility Enable */
#define PCI_EXP_RTCAP           30      /* Root Capabilities */
#define PCI_EXP_RTSTA           32      /* Root Status */
#define PCI_EXP_DEVCAP2         36      /* Device Capabilities 2 */
#define  PCI_EXP_DEVCAP2_ARI    0x20    /* Alternative Routing-ID */
#define PCI_EXP_DEVCTL2         40      /* Device Control 2 */
#define  PCI_EXP_DEVCTL2_ARI    0x20    /* Alternative Routing-ID */

/* Extended Capabilities (PCI-X 2.0 and Express) */
#define PCI_EXT_CAP_ID(header)          (header & 0x0000ffff)
#define PCI_EXT_CAP_VER(header)         ((header >> 16) & 0xf)
#define PCI_EXT_CAP_NEXT(header)        ((header >> 20) & 0xffc)

#define PCI_EXT_CAP_ID_ERR      1
#define PCI_EXT_CAP_ID_VC       2
#define PCI_EXT_CAP_ID_DSN      3
#define PCI_EXT_CAP_ID_PWR      4
#define PCI_EXT_CAP_ID_ARI      14

/* Advanced Error Reporting */
#define PCI_ERR_UNCOR_STATUS    4       /* Uncorrectable Error Status */
#define  PCI_ERR_UNC_TRAIN      0x00000001      /* Training */
#define  PCI_ERR_UNC_DLP        0x00000010      /* Data Link Protocol */
#define  PCI_ERR_UNC_POISON_TLP 0x00001000      /* Poisoned TLP */
#define  PCI_ERR_UNC_FCP        0x00002000      /* Flow Control Protocol */
#define  PCI_ERR_UNC_COMP_TIME  0x00004000      /* Completion Timeout */
#define  PCI_ERR_UNC_COMP_ABORT 0x00008000      /* Completer Abort */
#define  PCI_ERR_UNC_UNX_COMP   0x00010000      /* Unexpected Completion */
#define  PCI_ERR_UNC_RX_OVER    0x00020000      /* Receiver Overflow */
#define  PCI_ERR_UNC_MALF_TLP   0x00040000      /* Malformed TLP */
#define  PCI_ERR_UNC_ECRC       0x00080000      /* ECRC Error Status */
#define  PCI_ERR_UNC_UNSUP      0x00100000      /* Unsupported Request */
#define PCI_ERR_UNCOR_MASK      8       /* Uncorrectable Error Mask */
        /* Same bits as above */
#define PCI_ERR_UNCOR_SEVER     12      /* Uncorrectable Error Severity */
        /* Same bits as above */
#define PCI_ERR_COR_STATUS      16      /* Correctable Error Status */
#define  PCI_ERR_COR_RCVR       0x00000001      /* Receiver Error Status */
#define  PCI_ERR_COR_BAD_TLP    0x00000040      /* Bad TLP Status */
#define  PCI_ERR_COR_BAD_DLLP   0x00000080      /* Bad DLLP Status */
#define  PCI_ERR_COR_REP_ROLL   0x00000100      /* REPLAY_NUM Rollover */
#define  PCI_ERR_COR_REP_TIMER  0x00001000      /* Replay Timer Timeout */
#define PCI_ERR_COR_MASK        20      /* Correctable Error Mask */
        /* Same bits as above */
#define PCI_ERR_CAP             24      /* Advanced Error Capabilities */
#define  PCI_ERR_CAP_FEP(x)     ((x) & 31)      /* First Error Pointer */
#define  PCI_ERR_CAP_ECRC_GENC  0x00000020      /* ECRC Generation Capable */
#define  PCI_ERR_CAP_ECRC_GENE  0x00000040      /* ECRC Generation Enable */
#define  PCI_ERR_CAP_ECRC_CHKC  0x00000080      /* ECRC Check Capable */
#define  PCI_ERR_CAP_ECRC_CHKE  0x00000100      /* ECRC Check Enable */
#define PCI_ERR_HEADER_LOG      28      /* Header Log Register (16 bytes) */
#define PCI_ERR_ROOT_COMMAND    44      /* Root Error Command */
/* Correctable Err Reporting Enable */
#define PCI_ERR_ROOT_CMD_COR_EN         0x00000001
/* Non-fatal Err Reporting Enable */
#define PCI_ERR_ROOT_CMD_NONFATAL_EN    0x00000002
/* Fatal Err Reporting Enable */
#define PCI_ERR_ROOT_CMD_FATAL_EN       0x00000004
#define PCI_ERR_ROOT_STATUS     48
#define PCI_ERR_ROOT_COR_RCV            0x00000001      /* ERR_COR Received */
/* Multi ERR_COR Received */
#define PCI_ERR_ROOT_MULTI_COR_RCV      0x00000002
/* ERR_FATAL/NONFATAL Recevied */
#define PCI_ERR_ROOT_UNCOR_RCV          0x00000004
/* Multi ERR_FATAL/NONFATAL Recevied */
#define PCI_ERR_ROOT_MULTI_UNCOR_RCV    0x00000008
#define PCI_ERR_ROOT_FIRST_FATAL        0x00000010      /* First Fatal */
#define PCI_ERR_ROOT_NONFATAL_RCV       0x00000020      /* Non-Fatal Received */
#define PCI_ERR_ROOT_FATAL_RCV          0x00000040      /* Fatal Received */
#define PCI_ERR_ROOT_COR_SRC    52
#define PCI_ERR_ROOT_SRC        54

/* Virtual Channel */
#define PCI_VC_PORT_REG1        4
#define PCI_VC_PORT_REG2        8
#define PCI_VC_PORT_CTRL        12
#define PCI_VC_PORT_STATUS      14
#define PCI_VC_RES_CAP          16
#define PCI_VC_RES_CTRL         20
#define PCI_VC_RES_STATUS       26

/* Power Budgeting */
#define PCI_PWR_DSR             4       /* Data Select Register */
#define PCI_PWR_DATA            8       /* Data Register */
#define  PCI_PWR_DATA_BASE(x)   ((x) & 0xff)        /* Base Power */
#define  PCI_PWR_DATA_SCALE(x)  (((x) >> 8) & 3)    /* Data Scale */
#define  PCI_PWR_DATA_PM_SUB(x) (((x) >> 10) & 7)   /* PM Sub State */
#define  PCI_PWR_DATA_PM_STATE(x) (((x) >> 13) & 3) /* PM State */
#define  PCI_PWR_DATA_TYPE(x)   (((x) >> 15) & 7)   /* Type */
#define  PCI_PWR_DATA_RAIL(x)   (((x) >> 18) & 7)   /* Power Rail */
#define PCI_PWR_CAP             12      /* Capability */
#define  PCI_PWR_CAP_BUDGET(x)  ((x) & 1)       /* Included in system budget */

/*
 * Hypertransport sub capability types
 *
 * Unfortunately there are both 3 bit and 5 bit capability types defined
 * in the HT spec, catering for that is a little messy. You probably don't
 * want to use these directly, just use pci_find_ht_capability() and it
 * will do the right thing for you.
 */
#define HT_3BIT_CAP_MASK        0xE0
#define HT_CAPTYPE_SLAVE        0x00    /* Slave/Primary link configuration */
#define HT_CAPTYPE_HOST         0x20    /* Host/Secondary link configuration */

#define HT_5BIT_CAP_MASK        0xF8
#define HT_CAPTYPE_IRQ          0x80    /* IRQ Configuration */
#define HT_CAPTYPE_REMAPPING_40 0xA0    /* 40 bit address remapping */
#define HT_CAPTYPE_REMAPPING_64 0xA2    /* 64 bit address remapping */
#define HT_CAPTYPE_UNITID_CLUMP 0x90    /* Unit ID clumping */
#define HT_CAPTYPE_EXTCONF      0x98    /* Extended Configuration Space Access */
#define HT_CAPTYPE_MSI_MAPPING  0xA8    /* MSI Mapping Capability */
#define  HT_MSI_FLAGS           0x02            /* Offset to flags */
#define  HT_MSI_FLAGS_ENABLE    0x1             /* Mapping enable */
#define  HT_MSI_FLAGS_FIXED     0x2             /* Fixed mapping only */
#define  HT_MSI_FIXED_ADDR      0x00000000FEE00000ULL   /* Fixed addr */
#define  HT_MSI_ADDR_LO         0x04            /* Offset to low addr bits */
#define  HT_MSI_ADDR_LO_MASK    0xFFF00000      /* Low address bit mask */
#define  HT_MSI_ADDR_HI         0x08            /* Offset to high addr bits */
#define HT_CAPTYPE_DIRECT_ROUTE 0xB0    /* Direct routing configuration */
#define HT_CAPTYPE_VCSET        0xB8    /* Virtual Channel configuration */
#define HT_CAPTYPE_ERROR_RETRY  0xC0    /* Retry on error configuration */
#define HT_CAPTYPE_GEN3         0xD0    /* Generation 3 hypertransport configuration */
#define HT_CAPTYPE_PM           0xE0    /* Hypertransport powermanagement configuration */

/* Alternative Routing-ID Interpretation */
#define PCI_ARI_CAP             0x04    /* ARI Capability Register */
#define  PCI_ARI_CAP_MFVC       0x0001  /* MFVC Function Groups Capability */
#define  PCI_ARI_CAP_ACS        0x0002  /* ACS Function Groups Capability */
#define  PCI_ARI_CAP_NFN(x)     (((x) >> 8) & 0xff) /* Next Function Number */
#define PCI_ARI_CTRL            0x06    /* ARI Control Register */
#define  PCI_ARI_CTRL_MFVC      0x0001  /* MFVC Function Groups Enable */
#define  PCI_ARI_CTRL_ACS       0x0002  /* ACS Function Groups Enable */
#define  PCI_ARI_CTRL_FG(x)     (((x) >> 4) & 7) /* Function Group */

#endif /* LINUX_PCI_REGS_H */