From e0205a7156a62bfcaa3f3f2ed556faf3c9b38aad Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 1 Nov 2016 13:14:45 -0400 Subject: [PATCH] drm/amdgpu/gmc7: use the vram location programmed by the vbios MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c index 7e9ea53edf8b..0fc7d31176a5 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c @@ -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); } -- 2.30.2