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ati_radeon: Support PCI virtual not eq bus mapping.

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Use pci_bus_to_virt() to convert the bus address from the BARs to
virtual address' to eliminate the direct mapping requirement.

Rename variables to better match usage (_phys -> _bus or no-suffix)

This fixes the mpc8572ds CONFIG_PHYS_64BIT mode failure:
"videoboot: Video ROM failed to map!"

Tested on mpc8572ds with and without CONFIG_PHYS_64BIT.

Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
This commit is contained in:
Ed Swarthout
2010-03-31 15:52:40 -05:00
committed by Anatolij Gustschin
parent 9624f6d9eb
commit f6a7a2e888
3 changed files with 32 additions and 27 deletions
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10
drivers/bios_emulator/atibios.c
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@@ -173,7 +173,7 @@ Maps a pointer to the BIOS image on the graphics card on the PCI bus.
****************************************************************************/
void *PCI_mapBIOSImage(pci_dev_t pcidev)
{
u32 BIOSImagePhys;
u32 BIOSImageBus;
int BIOSImageBAR;
u8 *BIOSImage;
@@ -195,16 +195,18 @@ void *PCI_mapBIOSImage(pci_dev_t pcidev)
specific programming for different cards to solve this problem.
*/
if ((BIOSImagePhys = PCI_findBIOSAddr(pcidev, &BIOSImageBAR)) == 0) {
BIOSImageBus = PCI_findBIOSAddr(pcidev, &BIOSImageBAR);
if (BIOSImageBus == 0) {
printf("Find bios addr error\n");
return NULL;
}
BIOSImage = (u8 *) BIOSImagePhys;
BIOSImage = pci_bus_to_virt(pcidev, BIOSImageBus,
PCI_REGION_MEM, 0, MAP_NOCACHE);
/*Change the PCI BAR registers to map it onto the bus.*/
pci_write_config_dword(pcidev, BIOSImageBAR, 0);
pci_write_config_dword(pcidev, PCI_ROM_ADDRESS, BIOSImagePhys | 0x1);
pci_write_config_dword(pcidev, PCI_ROM_ADDRESS, BIOSImageBus | 0x1);
udelay(1);