diff options
| -rw-r--r-- | drivers/pci/pci.c | 24 | ||||
| -rw-r--r-- | include/pci.h | 23 |
2 files changed, 44 insertions, 3 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 7ee21d1..3daf73c 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -366,9 +366,27 @@ phys_addr_t pci_hose_bus_to_phys(struct pci_controller* hose, return phys_addr; } -/* - * - */ +void pci_write_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum, + u32 addr_and_ctrl) +{ + int bar; + + bar = PCI_BASE_ADDRESS_0 + barnum * 4; + pci_hose_write_config_dword(hose, dev, bar, addr_and_ctrl); +} + +u32 pci_read_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum) +{ + u32 addr; + int bar; + + bar = PCI_BASE_ADDRESS_0 + barnum * 4; + pci_hose_read_config_dword(hose, dev, bar, &addr); + if (addr & PCI_BASE_ADDRESS_SPACE_IO) + return addr & PCI_BASE_ADDRESS_IO_MASK; + else + return addr & PCI_BASE_ADDRESS_MEM_MASK; +} int pci_hose_config_device(struct pci_controller *hose, pci_dev_t dev, diff --git a/include/pci.h b/include/pci.h index d211351..216f448 100644 --- a/include/pci.h +++ b/include/pci.h @@ -678,5 +678,28 @@ extern void pci_mpc824x_init (struct pci_controller *hose); extern void pci_mpc85xx_init (struct pci_controller *hose); #endif +/** + * pci_write_bar32() - Write the address of a BAR including control bits + * + * This writes a raw address (with control bits) to a bar + * + * @hose: PCI hose to use + * @dev: PCI device to update + * @barnum: BAR number (0-5) + * @addr: BAR address with control bits + */ +void pci_write_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum, + u32 addr_and_ctrl); + +/** + * pci_read_bar32() - read the address of a bar + * + * @hose: PCI hose to use + * @dev: PCI device to inspect + * @barnum: BAR number (0-5) + * @return address of the bar, masking out any control bits + * */ +u32 pci_read_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum); + #endif /* __ASSEMBLY__ */ #endif /* _PCI_H */ |