/*
 * file:        pci-cfg.h
 * description: C structure definitions for PCI configuration space.
 */

struct pci_config_hdr {
    ushort vendor_id;           /* 00 */
    ushort dev_id;
    uint   cmd_status;          /* 04 */

    uchar  rev_id;              /* 08 */
    uchar  prog_if;
    uchar  subclass;
    uchar  class;

    uchar  cache_line;          /* 0C */
    uchar  latency;
    uchar  hdr_type : 7;
    uchar  multi_func : 1;
    uchar  bist;
} __attribute__((packed));

struct pci_config_bridge {
    struct pci_config_hdr hdr;  /* 00 */
    uint   BAR0;                /* 10 */
    uint   BAR1;                /* 14 */
    uchar  primary_bus;         /* 18 */
    uchar  secondary_bus;
    uchar  subord_bus;
    uchar  timer;
    uint   pad[8];              /* 1C..3C */
} __attribute__((packed));

struct pci_config_device {
    struct pci_config_hdr hdr;  /* 00 */
    uint   BAR0;                /* 10 */
    uint   BAR1;                /* 14 */
    uint   BAR2;                /* 18 */
    uint   BAR3;                /* 1C */
    uint   BAR4;                /* 20 */
    uint   BAR5;                /* 24 */
    uint   cardbus;             /* 28 */
    ushort subsys_vendor_id;    /* 2C */
    ushort subsys_id;
    uint   rom_addr;            /* 30 */
    uint   pad[2];              /* 34 */
    uchar  irq;                 /* 3C */
    uchar  irq_pin;
    uchar  grant;
    uchar  latency;
} __attribute__((packed));