SRIOV won't do vbios post in guest OS, and the mmMC_VM_FB_LOCATION
is pf and vf copy, so still need to program fb location for SRIOV.
v2: No need to stop mc, and update gmc_v8_0_vram_gtt_location as well.
v3: New line after the stack variables
BUG: SWDEV-126629
Signed-off-by: Emily Deng <Emily.Deng at amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index 55f8710..8c2f72a 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -397,7 +397,10 @@ static int gmc_v8_0_polaris_mc_load_microcode(struct amdgpu_device *adev)
static void gmc_v8_0_vram_gtt_location(struct amdgpu_device *adev,
struct amdgpu_mc *mc)
{
- u64 base = RREG32(mmMC_VM_FB_LOCATION) & 0xFFFF;
+ u64 base = 0;
+
+ if (!amdgpu_sriov_vf(adev))
+ base = RREG32(mmMC_VM_FB_LOCATION) & 0xFFFF;
base <<= 24;
if (mc->mc_vram_size > 0xFFC0000000ULL) {
@@ -443,6 +446,17 @@ static void gmc_v8_0_mc_program(struct amdgpu_device *adev)
adev->mc.vram_end >> 12);
WREG32(mmMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR,
adev->vram_scratch.gpu_addr >> 12);
+
+ if (amdgpu_sriov_vf(adev)) {
+ tmp = ((adev->mc.vram_end >> 24) & 0xFFFF) << 16;
+ tmp |= ((adev->mc.vram_start >> 24) & 0xFFFF);
+ WREG32(mmMC_VM_FB_LOCATION, tmp);
+ /* XXX double check these! */
+ WREG32(mmHDP_NONSURFACE_BASE, (adev->mc.vram_start >> 8));
+ WREG32(mmHDP_NONSURFACE_INFO, (2 << 7) | (1 << 30));
+ WREG32(mmHDP_NONSURFACE_SIZE, 0x3FFFFFFF);
+ }
+
WREG32(mmMC_VM_AGP_BASE, 0);
WREG32(mmMC_VM_AGP_TOP, 0x0FFFFFFF);
WREG32(mmMC_VM_AGP_BOT, 0x0FFFFFFF);
--
1.9.1
