LXR coreboot/util/vgabios/pci-userspace.h

   1#include "pci.h"
   2
   3typedef unsigned long pciaddr_t;
   4typedef u8 byte;
   5typedef u16 word;
   6
   7struct pci_dev {
   8        struct pci_dev *next;   /* Next device in the chain */
   9        word bus;               /* Higher byte can select host bridges */
  10        byte dev, func;         /* Device and function */
  11
  12        /* These fields are set by pci_fill_info() */
  13        int known_fields;       /* Set of info fields already known */
  14        word vendor_id, device_id;      /* Identity of the device */
  15        int irq;                /* IRQ number */
  16        pciaddr_t base_addr[6]; /* Base addresses */
  17        pciaddr_t size[6];      /* Region sizes */
  18        pciaddr_t rom_base_addr;        /* Expansion ROM base address */
  19        pciaddr_t rom_size;     /* Expansion ROM size */
  20
  21        /* Fields used internally: */
  22        void *access;
  23        void *methods;
  24        byte *cache;            /* Cached information */
  25        int cache_len;
  26        int hdrtype;            /* Direct methods: header type */
  27        void *aux;              /* Auxillary data */
  28};
  29
  30
  31struct pci_filter {
  32        int bus, slot, func;    /* -1 = ANY */
  33        int vendor, device;
  34};
  35
  36
  37#define PCITAG struct pci_filter *
  38#define pciVideoPtr struct pci_dev *
  39
  40extern int pciNumBuses;
  41
  42int pciInit(void);
  43int pciExit(void);
  44
  45
  46PCITAG findPci(unsigned short bx);
  47u32 pciSlotBX(pciVideoPtr pvp);
  48
  49void pciWriteLong(PCITAG tag, u32 idx, u32 data);
  50void pciWriteWord(PCITAG tag, u32 idx, u16 data);
  51void pciWriteByte(PCITAG tag, u32 idx, u8 data);
  52
  53u32 pciReadLong(PCITAG tag, u32 idx);
  54u16 pciReadWord(PCITAG tag, u32 idx);
  55u8 pciReadByte(PCITAG tag, u32 idx);
  56