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| author | Christian König <christian.koenig@amd.com> | 2015-09-28 12:31:26 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-10-14 16:16:40 -0400 |
| commit | d9c13156a628cc9f8f062f2c10e2bff55b92aaab (patch) | |
| tree | 9324e82899a044032cfe1be0800786942fbee398 /drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | |
| parent | ce0c6bcda6d0d9fc9df65dccb46a68b79ba6f018 (diff) | |
| download | linux-d9c13156a628cc9f8f062f2c10e2bff55b92aaab.tar.gz linux-d9c13156a628cc9f8f062f2c10e2bff55b92aaab.tar.bz2 linux-d9c13156a628cc9f8f062f2c10e2bff55b92aaab.zip | |
drm/amdgpu: add option to stop on VM fault
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c index 7bc9e9fcf3d2..42b5ff827055 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c @@ -550,6 +550,35 @@ static int gmc_v8_0_gart_set_pte_pde(struct amdgpu_device *adev, } /** + * gmc_v8_0_set_fault_enable_default - update VM fault handling + * + * @adev: amdgpu_device pointer + * @value: true redirects VM faults to the default page + */ +static void gmc_v8_0_set_fault_enable_default(struct amdgpu_device *adev, + bool value) +{ + u32 tmp; + + tmp = RREG32(mmVM_CONTEXT1_CNTL); + tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, + RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, value); + tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, + DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, value); + tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, + PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, value); + tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, + VALID_PROTECTION_FAULT_ENABLE_DEFAULT, value); + tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, + READ_PROTECTION_FAULT_ENABLE_DEFAULT, value); + tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, + WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, value); + tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, + EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, value); + WREG32(mmVM_CONTEXT1_CNTL, tmp); +} + +/** * gmc_v8_0_gart_enable - gart enable * * @adev: amdgpu_device pointer @@ -663,6 +692,10 @@ static int gmc_v8_0_gart_enable(struct amdgpu_device *adev) tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, PAGE_TABLE_BLOCK_SIZE, amdgpu_vm_block_size - 9); WREG32(mmVM_CONTEXT1_CNTL, tmp); + if (amdgpu_vm_fault_stop == AMDGPU_VM_FAULT_STOP_ALWAYS) + gmc_v8_0_set_fault_enable_default(adev, false); + else + gmc_v8_0_set_fault_enable_default(adev, true); gmc_v8_0_gart_flush_gpu_tlb(adev, 0); DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n", @@ -1268,6 +1301,9 @@ static int gmc_v8_0_process_interrupt(struct amdgpu_device *adev, if (!addr && !status) return 0; + if (amdgpu_vm_fault_stop == AMDGPU_VM_FAULT_STOP_FIRST) + gmc_v8_0_set_fault_enable_default(adev, false); + dev_err(adev->dev, "GPU fault detected: %d 0x%08x\n", entry->src_id, entry->src_data); dev_err(adev->dev, " VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x%08X\n", |