4 #include "types.h" // u32
6 static inline u8 pci_bdf_to_bus(u16 bdf) {
9 static inline u8 pci_bdf_to_devfn(u16 bdf) {
12 static inline u16 pci_bdf_to_busdev(u16 bdf) {
15 static inline u8 pci_bdf_to_dev(u16 bdf) {
16 return (bdf >> 3) & 0x1f;
18 static inline u8 pci_bdf_to_fn(u16 bdf) {
21 static inline u16 pci_to_bdf(int bus, int dev, int fn) {
22 return (bus<<8) | (dev<<3) | fn;
24 static inline u16 pci_bus_devfn_to_bdf(int bus, u16 devfn) {
25 return (bus << 8) | devfn;
28 void pci_config_writel(u16 bdf, u32 addr, u32 val);
29 void pci_config_writew(u16 bdf, u32 addr, u16 val);
30 void pci_config_writeb(u16 bdf, u32 addr, u8 val);
31 u32 pci_config_readl(u16 bdf, u32 addr);
32 u16 pci_config_readw(u16 bdf, u32 addr);
33 u8 pci_config_readb(u16 bdf, u32 addr);
34 void pci_config_maskw(u16 bdf, u32 addr, u16 off, u16 on);
36 int pci_find_device(u16 vendid, u16 devid);
37 int pci_find_class(u16 classid);
42 struct pci_device *next;
43 struct pci_device *parent;
45 // Configuration space device information
52 extern struct pci_device *PCIDevices;
55 static inline u32 pci_classprog(struct pci_device *pci) {
56 return (pci->class << 8) | pci->prog_if;
59 #define foreachpci(PCI) \
60 for (PCI=PCIDevices; PCI; PCI=PCI->next)
62 #define PP_ROOT (1<<17)
63 #define PP_PCIBRIDGE (1<<18)
65 void pci_path_setup(void);
67 int pci_next(int bdf, int *pmax);
68 #define foreachbdf(BDF, MAX) \
69 for (MAX=0x0100, BDF=pci_next(0, &MAX) \
71 ; BDF=pci_next(BDF+1, &MAX))
73 #define foreachbdf_in_bus(BDF, MAX, BUS) \
74 for (MAX = pci_bus_devfn_to_bdf(BUS, 0) + 0x0100, \
75 BDF = pci_next(pci_bus_devfn_to_bdf(BUS, 0), &MAX) \
76 ; BDF >= 0 && BDF < pci_bus_devfn_to_bdf(BUS, 0) + 0x0100 \
77 ; MAX = pci_bus_devfn_to_bdf(BUS, 0) + 0x0100, \
78 BDF = pci_next(BDF + 1, &MAX))
80 #define PCI_ANY_ID (~0)
81 struct pci_device_id {
86 void (*func)(u16 bdf, void *arg);
89 #define PCI_DEVICE(vendor_id, device_id, init_func) \
91 .vendid = (vendor_id), \
92 .devid = (device_id), \
93 .class = PCI_ANY_ID, \
98 #define PCI_DEVICE_CLASS(vendor_id, device_id, class_code, init_func) \
100 .vendid = (vendor_id), \
101 .devid = (device_id), \
102 .class = (class_code), \
104 .func = (init_func) \
107 #define PCI_DEVICE_END \
112 int pci_init_device(const struct pci_device_id *table, u16 bdf, void *arg);
113 int pci_find_init_device(const struct pci_device_id *ids, void *arg);
114 void pci_reboot(void);
116 // helper functions to access pci mmio bars from real mode
117 u32 pci_readl(u32 addr);
118 void pci_writel(u32 addr, u32 val);
121 void create_pirtable(void);
124 /****************************************************************
126 ****************************************************************/
128 extern u16 PirOffset;
138 struct link_info links[4];
150 u32 compatible_devid;
154 struct pir_slot slots[0];
157 #define PIR_SIGNATURE 0x52495024 // $PIR