blob: eea5b09c3b399be0ae1bac1db1c46049834e3b3c [file] [log] [blame]
#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;
}
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))
// 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