Add support for enabling PCIe Common Clock and ASPM

[coreboot.git] / src / include / device / pci_def.h

#ifndef PCI_DEF_H
#define PCI_DEF_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_LIMIT_MASK 0x06
#define  PCI_BASE_ADDRESS_MEM_LIMIT_32  0x00    /* 32 bit address */
#define  PCI_BASE_ADDRESS_MEM_LIMIT_1M  0x02    /* Below 1M [obsolete] */
#define  PCI_BASE_ADDRESS_MEM_LIMIT_64  0x04    /* 64 bit address */
#define  PCI_BASE_ADDRESS_MEM_PREFETCH  0x08    /* prefetchable? */
#define  PCI_BASE_ADDRESS_MEM_ATTR_MASK 0x0f
#define  PCI_BASE_ADDRESS_IO_ATTR_MASK  0x03
/* 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_ID_PCIX        0x07    /* PCIX  */
#define  PCI_CAP_ID_HT          0x08    /* Hypertransport */
#define  PCI_CAP_ID_SHPC        0x0C    /* PCI Standard Hot-Plug Controller */
#define  PCI_CAP_ID_PCIE        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) */

/* Hypertransport Registers */
#define PCI_HT_CAP_SIZEOF          4
#define PCI_HT_CAP_HOST_CTRL       4    /* Host link control */
#define PCI_HT_CAP_HOST_WIDTH      6    /* width value & capability  */
#define PCI_HT_CAP_HOST_FREQ       0x09 /* Host frequency */
#define PCI_HT_CAP_HOST_FREQ_CAP   0x0a /* Host Frequency capability  */
#define PCI_HT_CAP_SLAVE_CTRL0     4    /* link control */
#define PCI_HT_CAP_SLAVE_CTRL1     8    /* link control to */
#define PCI_HT_CAP_SLAVE_WIDTH0    6    /* width value & capability  */
#define PCI_HT_CAP_SLAVE_WIDTH1    0x0a /* width value & capability  to */
#define PCI_HT_CAP_SLAVE_FREQ0     0x0d /* Slave frequency from */
#define PCI_HT_CAP_SLAVE_FREQ1     0x011        /* Slave frequency to */
#define PCI_HT_CAP_SLAVE_FREQ_CAP0 0x0e /* Frequency capability from */
#define PCI_HT_CAP_SLAVE_FREQ_CAP1 0x12 /* Frequency capability to */
#define PCI_HT_CAP_SLAVE_LINK_ENUM   0x14 /* Link Enumeration Scratchpad */

/* 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_AUX_POWER   0x0010  /* Auxilliary power support */
#define  PCI_PM_CAP_DSI         0x0020  /* Device specific initialization */
#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_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 */
#define PCI_MSI_MASK_BIT        16      /* Mask bits register */

/* 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_MAX_READ     0x000c  /* Max Memory Read Byte Count */
#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-X bridge registers */
#define PCI_X_SEC_STATUS        2       /* Secondary status */
#define  PCI_X_SSTATUS_64BIT    0x0001  /* The bus behind the bridge is 64bits wide */
#define  PCI_X_SSTATUS_133MHZ   0x0002  /* The bus behind the bridge is 133Mhz Capable */
#define  PCI_X_SSTATUS_SPL_DISC 0x0004  /* Split Completion Discarded */
#define  PCI_X_SSTATUS_UNX_SPL  0x0008  /* Unexpected Split Completion */
#define  PCI_X_SSTATUS_SPL_OVR  0x0010  /* Split Completion Overrun */
#define  PCI_X_SSTATUS_SPL_DLY  0x0020  /* Split Completion Delayed */
#define  PCI_X_SSTATUS_MFREQ(x) (((x) & 0x03c0) >> 6)   /* PCI-X mode and frequency */
#define   PCI_X_SSTATUS_CONVENTIONAL_PCI        0x0
#define   PCI_X_SSTATUS_MODE1_66MHZ     0x1
#define   PCI_X_SSTATUS_MODE1_100MHZ    0x2
#define   PCI_X_SSTATUS_MODE1_133MHZ    0x3
#define   PCI_X_SSTATUS_MODE2_266MHZ_REF_66MHZ  0x9
#define   PCI_X_SSTATUS_MODE2_266MHZ_REF_100MHZ 0xa
#define   PCI_X_SSTATUS_MODE2_266MHZ_REF_133MHZ 0xb
#define   PCI_X_SSTATUS_MODE2_533MHZ_REF_66MHZ  0xd
#define   PCI_X_SSTATUS_MODE2_533MHZ_REF_100MHZ 0xe
#define   PCI_X_SSTATUS_MODE2_533MHZ_REF_133MHZ 0xf
#define  PCI_X_SSTATUS_VERSION(x)       (((x) >> 12) & 3) /* Version */
#define  PCI_X_SSTATUS_266MHZ   0x4000  /* The bus behind the bridge is 266Mhz Capable */
#define  PCI_X_SSTAUTS_533MHZ   0x8000  /* The bus behind the bridge is 533Mhz 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_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_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_LNKCTL          16      /* Link Control */
#define  PCI_EXP_LNKCTL_RL      0x20    /* Retrain Link */
#define  PCI_EXP_LNKCTL_CCC     0x40    /* Common Clock COnfiguration */
#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 */

/* 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

/* 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 */
#define PCI_ERR_ROOT_STATUS     48
#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 */


/*
 * 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)
#define PCI_BDF(bus,dev,func)   ((bus) << 16 | (dev) << 11 | (func) << 8)

#endif /* PCI_DEF_H */