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1 | #ifndef PCI_H | |
2 | #define PCI_H | |
3 | ||
4 | #include <stdint.h> | |
5 | ||
6 | /* General PCI functions. This is implemented by pci-linux.c and pci-raw.c; the | |
7 | * former uses Linux's /proc/bus/pci interface for access from userspace, while | |
8 | * the latter accesses the PCI hardware directly. | |
9 | */ | |
10 | ||
11 | void pci_write32(int bus, int slot, int fn, int addr, uint32_t data); | |
12 | void pci_write16(int bus, int slot, int fn, int addr, uint16_t data); | |
13 | void pci_write8(int bus, int slot, int fn, int addr, uint8_t data); | |
14 | ||
15 | uint32_t pci_read32(int bus, int slot, int fn, int addr); | |
16 | uint16_t pci_read16(int bus, int slot, int fn, int addr); | |
17 | uint8_t pci_read8(int bus, int slot, int fn, int addr); | |
18 | ||
19 | /* Hardware-agnostic functions implemented by pci.c */ | |
20 | typedef enum { | |
21 | PCI_BAR_NONE = 0, | |
22 | PCI_BAR_MEMORY32, | |
23 | PCI_BAR_MEMORY64, | |
24 | PCI_BAR_IO | |
25 | } pci_bar_type_t; | |
26 | ||
27 | typedef struct pci_bar { | |
28 | pci_bar_type_t type; | |
29 | unsigned char prefetchable; | |
30 | unsigned long addr; | |
31 | } pci_bar_t; | |
32 | ||
33 | typedef struct pci_dev { | |
34 | unsigned short vid, did; | |
35 | int bus, dev, fn; | |
36 | pci_bar_t bars[6]; | |
37 | } pci_dev_t; | |
38 | ||
39 | typedef int (*pci_probe_fn_t)(pci_dev_t *); | |
40 | ||
41 | void pci_bus_enum(); | |
42 | int pci_probe(pci_probe_fn_t probe); | |
43 | ||
44 | #endif |