提交 a80b3047 编写于 作者: J Jay Cornwall 提交者: Alex Deucher

drm/amdgpu: Fix default page access routing

The VM default page (used when a VM translation fails) is allocated in
system memory. The VM is misconfigured to interpret the physical address
as referencing a VRAM physical page.

Route default page accesses to system memory.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NJay Cornwall <jay@jcornwall.me>
Cc: <stable@vger.kernel.org> # v4.2+
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
上级 24dd2f64
......@@ -501,6 +501,7 @@ static int gmc_v7_0_gart_enable(struct amdgpu_device *adev)
tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_L2_PDE0_CACHE_LRU_UPDATE_BY_WRITE, 1);
tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, EFFECTIVE_L2_QUEUE_SIZE, 7);
tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, CONTEXT1_IDENTITY_ACCESS_MODE, 1);
tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_DEFAULT_PAGE_OUT_TO_SYSTEM_MEMORY, 1);
WREG32(mmVM_L2_CNTL, tmp);
tmp = REG_SET_FIELD(0, VM_L2_CNTL2, INVALIDATE_ALL_L1_TLBS, 1);
tmp = REG_SET_FIELD(tmp, VM_L2_CNTL2, INVALIDATE_L2_CACHE, 1);
......
......@@ -629,6 +629,7 @@ static int gmc_v8_0_gart_enable(struct amdgpu_device *adev)
tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_L2_PDE0_CACHE_LRU_UPDATE_BY_WRITE, 1);
tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, EFFECTIVE_L2_QUEUE_SIZE, 7);
tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, CONTEXT1_IDENTITY_ACCESS_MODE, 1);
tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_DEFAULT_PAGE_OUT_TO_SYSTEM_MEMORY, 1);
WREG32(mmVM_L2_CNTL, tmp);
tmp = RREG32(mmVM_L2_CNTL2);
tmp = REG_SET_FIELD(tmp, VM_L2_CNTL2, INVALIDATE_ALL_L1_TLBS, 1);
......
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