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. Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 2 +- drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 2 +- 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 6a6929ac2748..e77e5593e1ab 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 5af235202513..6acf649469dd 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"); -- 2.41.0
