From: Xiangliang Yu <Xiangliang.Yu@xxxxxxx>
Change ioremap mode from noncache to write combine and it will
reduce the read vbios time from 188ms to 8ms.
Signed-off-by: Xiangliang Yu <Xiangliang.Yu at amd.com>
Signed-off-by: Xiangliang.Yu <Xiangliang.Yu at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
index ea3a250..c21adf6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
@@ -104,7 +104,7 @@ static bool igp_read_bios_from_vram(struct amdgpu_device *adev)
adev->bios = NULL;
vram_base = pci_resource_start(adev->pdev, 0);
- bios = ioremap(vram_base, size);
+ bios = ioremap_wc(vram_base, size);
if (!bios) {
return false;
}
--
2.7.4
