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#ifndef __PCI_H
#define __PCI_H
#include "types.h" // u32
static inline u8 pci_bdf_to_bus(u16 bdf) {
return bdf >> 8;
}
static inline u8 pci_bdf_to_devfn(u16 bdf) {
return bdf & 0xff;
}
static inline u16 pci_bdf_to_busdev(u16 bdf) {
return bdf & ~0x07;
}
static inline u8 pci_bdf_to_dev(u16 bdf) {
return (bdf >> 3) & 0x1f;
}
static inline u8 pci_bdf_to_fn(u16 bdf) {
return bdf & 0x07;
}
static inline u16 pci_to_bdf(int bus, int dev, int fn) {
return (bus<<8) | (dev<<3) | fn;
}
static inline u16 pci_bus_devfn_to_bdf(int bus, u16 devfn) {
return (bus << 8) | devfn;
}
static inline u32 pci_vd(u16 vendor, u16 device) {
return (device << 16) | vendor;
}
static inline u16 pci_vd_to_ven(u32 vd) {
return vd & 0xffff;
}
static inline u16 pci_vd_to_dev(u32 vd) {
return vd >> 16;
}
void pci_config_writel(u16 bdf, u32 addr, u32 val);
void pci_config_writew(u16 bdf, u32 addr, u16 val);
void pci_config_writeb(u16 bdf, u32 addr, u8 val);
u32 pci_config_readl(u16 bdf, u32 addr);
u16 pci_config_readw(u16 bdf, u32 addr);
u8 pci_config_readb(u16 bdf, u32 addr);
void pci_config_maskw(u16 bdf, u32 addr, u16 off, u16 on);
int pci_find_vga(void);
int pci_find_device(u16 vendid, u16 devid);
int pci_find_class(u16 classid);
int pci_next(int bdf, int *pmax);
#define foreachpci(BDF, MAX) \
for (MAX=0x0100, BDF=pci_next(0, &MAX) \
; BDF >= 0 \
; BDF=pci_next(BDF+1, &MAX))
#define foreachpci_in_bus(BDF, MAX, BUS) \
for (MAX = pci_bus_devfn_to_bdf(BUS, 0) + 0x0100, \
BDF = pci_next(pci_bus_devfn_to_bdf(BUS, 0), &MAX) \
; BDF >= 0 && BDF < pci_bus_devfn_to_bdf(BUS, 0) + 0x0100 \
; MAX = pci_bus_devfn_to_bdf(BUS, 0) + 0x0100, \
BDF = pci_next(BDF + 1, &MAX))
#define PCI_ANY_ID (~0)
struct pci_device_id {
u32 vendid;
u32 devid;
u32 class;
u32 class_mask;
void (*func)(u16 bdf, void *arg);
};
#define PCI_DEVICE(vendor_id, device_id, init_func) \
{ \
.vendid = (vendor_id), \
.devid = (device_id), \
.class = PCI_ANY_ID, \
.class_mask = 0, \
.func = (init_func) \
}
#define PCI_DEVICE_CLASS(vendor_id, device_id, class_code, init_func) \
{ \
.vendid = (vendor_id), \
.devid = (device_id), \
.class = (class_code), \
.class_mask = ~0, \
.func = (init_func) \
}
#define PCI_DEVICE_END \
{ \
.vendid = 0, \
}
int pci_init_device(const struct pci_device_id *table, u16 bdf, void *arg);
int pci_find_init_device(const struct pci_device_id *ids, void *arg);
// pirtable.c
void create_pirtable(void);
/****************************************************************
* PIR table
****************************************************************/
extern u16 PirOffset;
struct link_info {
u8 link;
u16 bitmap;
} PACKED;
struct pir_slot {
u8 bus;
u8 dev;
struct link_info links[4];
u8 slot_nr;
u8 reserved;
} PACKED;
struct pir_header {
u32 signature;
u16 version;
u16 size;
u8 router_bus;
u8 router_devfunc;
u16 exclusive_irqs;
u32 compatible_devid;
u32 miniport_data;
u8 reserved[11];
u8 checksum;
struct pir_slot slots[0];
} PACKED;
#define PIR_SIGNATURE 0x52495024 // $PIR
#endif
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