leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drm/amdgpu/gmc7: use the vram location programmed by the vbios

Browse Source 
This makes mc programming much simpler in future patches.

Since evergreen, the vbios has been programming the fb location
to the proper vram size.  The only reason to reprogram it would
be to change the location.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2016-11-01 13:14:45 -04:00
parent 9081c4cf7d
commit e0205a7156
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
View File

@ -242,13 +242,16 @@ static int gmc_v7_0_mc_load_microcode(struct amdgpu_device *adev)
static void gmc_v7_0_vram_gtt_location(struct amdgpu_device *adev,
struct amdgpu_mc *mc)
{
u64 base = RREG32(mmMC_VM_FB_LOCATION) & 0xFFFF;
base <<= 24;
if (mc->mc_vram_size > 0xFFC0000000ULL) {
/* leave room for at least 1024M GTT */
dev_warn(adev->dev, "limiting VRAM\n");
mc->real_vram_size = 0xFFC0000000ULL;
mc->mc_vram_size = 0xFFC0000000ULL;
}
amdgpu_vram_location(adev, &adev->mc, 0);
amdgpu_vram_location(adev, &adev->mc, base);
adev->mc.gtt_base_align = 0;
amdgpu_gtt_location(adev, mc);
}