| #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 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); |
| |
| int pci_find_vga(); |
| 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(); |
| |
| |
| /**************************************************************** |
| * 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 |