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| author | Alex Deucher <alexander.deucher@amd.com> | 2023-09-20 20:07:00 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-09-27 00:00:22 +0300 |
| commit | 29495d81457a483c2859ccde59cc063034bfe47d (patch) | |
| tree | e0235d49f6f14c550cd174fcc835d8390488f44f /drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | |
| parent | cd956e7531281fba1b7cbb97e5cb55c99701f0c6 (diff) | |
| download | linux-29495d81457a483c2859ccde59cc063034bfe47d.tar.xz | |
drm/amdgpu/gmc6-8: properly disable the AGP aperture
The BOT register needs to be larger than the TOP register
for this to be properly disabled. The lower 22 bits
of the BOT address are always 0 and the lower 22 bits of
the TOP register are always 1 so you need to make
the upper bits of BOT larger than the upper bits of BOT.
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c index 5b837a65fad2..07579fa26fa3 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c @@ -253,7 +253,7 @@ static void gmc_v6_0_mc_program(struct amdgpu_device *adev) WREG32(mmMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR, adev->mem_scratch.gpu_addr >> 12); WREG32(mmMC_VM_AGP_BASE, 0); - WREG32(mmMC_VM_AGP_TOP, 0x0FFFFFFF); + WREG32(mmMC_VM_AGP_TOP, 0); WREG32(mmMC_VM_AGP_BOT, 0x0FFFFFFF); if (gmc_v6_0_wait_for_idle((void *)adev)) |