diff options
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/i386/include/arch/romcc_io.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/arch/i386/include/arch/romcc_io.h b/src/arch/i386/include/arch/romcc_io.h index c0c2250f98..adda3f8ef8 100644 --- a/src/arch/i386/include/arch/romcc_io.h +++ b/src/arch/i386/include/arch/romcc_io.h @@ -178,6 +178,24 @@ static device_t pci_locate_device(unsigned pci_id, device_t dev) return PCI_DEV_INVALID; } +static device_t pci_locate_device_on_bus(unsigned pci_id, unsigned bus) +{ + device_t dev, last; + + dev = PCI_DEV(bus, 0, 0); + last = PCI_DEV(bus, 31, 7); + + for(; dev <=last; dev += PCI_DEV(0,0,1)) { + unsigned int id; + id = pci_read_config32(dev, 0); + if (id == pci_id) { + return dev; + } + } + return PCI_DEV_INVALID; +} + + /* Generic functions for pnp devices */ static inline __attribute__((always_inline)) void pnp_write_config(device_t dev, uint8_t reg, uint8_t value) |