util/vgabios/pci-userspace.h

   1 #include "pci.h"
   2
   3 typedef unsigned long pciaddr_t;
   4 typedef u8 byte;
   5 typedef u16 word;
   6
   7 struct 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
  31 struct 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
  40 extern int pciNumBuses;
  41
  42 int pciInit(void);
  43 int pciExit(void);
  44
  45
  46 PCITAG findPci(unsigned short bx);
  47 u32 pciSlotBX(pciVideoPtr pvp);
  48
  49 void pciWriteLong(PCITAG tag, u32 idx, u32 data);
  50 void pciWriteWord(PCITAG tag, u32 idx, u16 data);
  51 void pciWriteByte(PCITAG tag, u32 idx, u8 data);
  52
  53 u32 pciReadLong(PCITAG tag, u32 idx);
  54 u16 pciReadWord(PCITAG tag, u32 idx);
  55 u8 pciReadByte(PCITAG tag, u32 idx);