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| author | Alex Deucher <alexander.deucher@amd.com> | 2023-09-20 13:07:00 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-09-26 17:00:22 -0400 |
| commit | 29495d81457a483c2859ccde59cc063034bfe47d (patch) | |
| tree | e0235d49f6f14c550cd174fcc835d8390488f44f | |
| parent | cd956e7531281fba1b7cbb97e5cb55c99701f0c6 (diff) | |
| download | linux-stable-29495d81457a483c2859ccde59cc063034bfe47d.tar.gz linux-stable-29495d81457a483c2859ccde59cc063034bfe47d.tar.bz2 linux-stable-29495d81457a483c2859ccde59cc063034bfe47d.zip | |
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>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 2 |
3 files changed, 3 insertions, 3 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)) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c index 998f6ee60b78..89c4257cdc2e 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c @@ -288,7 +288,7 @@ static void gmc_v7_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_v7_0_wait_for_idle((void *)adev)) dev_warn(adev->dev, "Wait for MC idle timedout !\n"); diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c index 8dcd9b13673c..84a4d0c6e135 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c @@ -473,7 +473,7 @@ static void gmc_v8_0_mc_program(struct amdgpu_device *adev) } 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_v8_0_wait_for_idle((void *)adev)) dev_warn(adev->dev, "Wait for MC idle timedout !\n"); |