56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
#include "pci.h"
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typedef unsigned long pciaddr_t;
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typedef u8 byte;
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typedef u16 word;
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struct pci_dev {
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struct pci_dev *next; /* Next device in the chain */
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word bus; /* Higher byte can select host bridges */
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byte dev, func; /* Device and function */
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/* These fields are set by pci_fill_info() */
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int known_fields; /* Set of info fields already known */
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word vendor_id, device_id; /* Identity of the device */
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int irq; /* IRQ number */
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pciaddr_t base_addr[6]; /* Base addresses */
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pciaddr_t size[6]; /* Region sizes */
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pciaddr_t rom_base_addr; /* Expansion ROM base address */
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pciaddr_t rom_size; /* Expansion ROM size */
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/* Fields used internally: */
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void *access;
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void *methods;
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byte *cache; /* Cached information */
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int cache_len;
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int hdrtype; /* Direct methods: header type */
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void *aux; /* Auxillary data */
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};
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struct pci_filter {
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int bus, slot, func; /* -1 = ANY */
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int vendor, device;
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};
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#define PCITAG struct pci_filter *
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#define pciVideoPtr struct pci_dev *
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extern int pciNumBuses;
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int pciInit(void);
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int pciExit(void);
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PCITAG findPci(unsigned short bx);
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u32 pciSlotBX(pciVideoPtr pvp);
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void pciWriteLong(PCITAG tag, u32 idx, u32 data);
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void pciWriteWord(PCITAG tag, u32 idx, u16 data);
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void pciWriteByte(PCITAG tag, u32 idx, u8 data);
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u32 pciReadLong(PCITAG tag, u32 idx);
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u16 pciReadWord(PCITAG tag, u32 idx);
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u8 pciReadByte(PCITAG tag, u32 idx);
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