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drm/amdgpu/gmc6-8: properly disable the AGP aperture

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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>
This commit is contained in:
Alex Deucher 2023-09-20 13:07:00 -04:00
parent cd956e7531
commit 29495d8145
3 changed files with 3 additions and 3 deletions
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2
drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
View File

@ -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))

2
drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
View File

@ -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");

2
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
View File

@ -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");