diff options
Diffstat (limited to 'qemu/roms/openbios/include/arch/amd64/pci.h')
-rw-r--r-- | qemu/roms/openbios/include/arch/amd64/pci.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/qemu/roms/openbios/include/arch/amd64/pci.h b/qemu/roms/openbios/include/arch/amd64/pci.h new file mode 100644 index 000000000..3e88e150b --- /dev/null +++ b/qemu/roms/openbios/include/arch/amd64/pci.h @@ -0,0 +1,66 @@ +#ifndef AMD64_PCI_H +#define AMD64_PCI_H + +#include "asm/io.h" + +#if !(defined(PCI_CONFIG_1) || defined(PCI_CONFIG_2)) +#define PCI_CONFIG_1 1 /* default */ +#endif + +#ifdef PCI_CONFIG_1 + +/* PCI Configuration Mechanism #1 */ + +/* Have pci_addr in the same format as the values written to 0xcf8 + * so register accesses can be made easy. */ +#define PCI_ADDR(bus, dev, fn) \ + ((pci_addr) (0x80000000u \ + | (uint32_t) (bus) << 16 \ + | (uint32_t) (dev) << 11 \ + | (uint32_t) (fn) << 8)) + +#define PCI_BUS(pcidev) ((uint8_t) ((pcidev) >> 16)) +#define PCI_DEV(pcidev) ((uint8_t) ((pcidev) >> 11) & 0x1f) +#define PCI_FN(pcidev) ((uint8_t) ((pcidev) >> 8) & 7) + +static inline uint8_t pci_config_read8(pci_addr dev, uint8_t reg) +{ + outl(dev | (reg & ~3), 0xcf8); + return inb(0xcfc | (reg & 3)); +} + +static inline uint16_t pci_config_read16(pci_addr dev, uint8_t reg) +{ + outl(dev | (reg & ~3), 0xcf8); + return inw(0xcfc | (reg & 2)); +} + +static inline uint32_t pci_config_read32(pci_addr dev, uint8_t reg) +{ + outl(dev | reg, 0xcf8); + return inl(0xcfc | reg); +} + +static inline void pci_config_write8(pci_addr dev, uint8_t reg, uint8_t val) +{ + outl(dev | (reg & ~3), 0xcf8); + outb(val, 0xcfc | (reg & 3)); +} + +static inline void pci_config_write16(pci_addr dev, uint8_t reg, uint16_t val) +{ + outl(dev | (reg & ~3), 0xcf8); + outw(val, 0xcfc | (reg & 2)); +} + +static inline void pci_config_write32(pci_addr dev, uint8_t reg, uint32_t val) +{ + outl(dev | reg, 0xcf8); + outl(val, 0xcfc); +} + +#else /* !PCI_CONFIG_1 */ +#error PCI Configuration Mechanism is not specified or implemented +#endif + +#endif /* AMD64_PCI_H */ |