diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2014-01-04 02:26:58 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2014-01-07 01:49:22 +0100 |
| commit | e501b3d87f003dfad8fcbd0f55ae17ea52495a56 (patch) | |
| tree | 1307d77ead535d134b6f62df53c923cf1247baa6 /drivers/char/agp/sis-agp.c | |
| parent | PCI: Add pci_bus_address() to get bus address of a BAR (diff) | |
| download | linux-e501b3d87f003dfad8fcbd0f55ae17ea52495a56.tar.xz linux-e501b3d87f003dfad8fcbd0f55ae17ea52495a56.zip | |
agp: Support 64-bit APBASE
Per the AGP 3.0 spec, APBASE is a standard PCI BAR and may be either 32
bits or 64 bits wide. Many drivers read APBASE directly, but they only
handled 32-bit BARs.
The PCI core reads APBASE at enumeration-time. Use pci_bus_address()
instead of reading it again in the driver. This works correctly for both
32-bit and 64-bit BARs.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/char/agp/sis-agp.c')
| -rw-r--r-- | drivers/char/agp/sis-agp.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/char/agp/sis-agp.c b/drivers/char/agp/sis-agp.c index 79c838c434bc..2c74038da459 100644 --- a/drivers/char/agp/sis-agp.c +++ b/drivers/char/agp/sis-agp.c @@ -50,13 +50,12 @@ static void sis_tlbflush(struct agp_memory *mem) static int sis_configure(void) { - u32 temp; struct aper_size_info_8 *current_size; current_size = A_SIZE_8(agp_bridge->current_size); pci_write_config_byte(agp_bridge->dev, SIS_TLBCNTRL, 0x05); - pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp); - agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK); + agp_bridge->gart_bus_addr = pci_bus_address(agp_bridge->dev, + AGP_APERTURE_BAR); pci_write_config_dword(agp_bridge->dev, SIS_ATTBASE, agp_bridge->gatt_bus_addr); pci_write_config_byte(agp_bridge->dev, SIS_APSIZE, |