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| author | Christian König <christian.koenig@amd.com> | 2017-01-18 15:37:21 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-03-30 06:52:58 +0300 |
| commit | 62cd91f99e6b1f1384d69ec68b7ff85c5bbc38c5 (patch) | |
| tree | eeebe592a01e7fb961e4b377ecf39cc0625f14b7 /drivers/gpu/drm/amd | |
| parent | f7c35abe933c2ee34008c7415578611adcf3fcc6 (diff) | |
| download | linux-62cd91f99e6b1f1384d69ec68b7ff85c5bbc38c5.tar.xz | |
drm/amdgpu: implement PRT for GFX7 v2
Enable/disable the handling globally for now and
print a warning when we enable it for the first time.
v2: set correct register
Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c index 8d05e0c4e3d7..4b38d062cbe4 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c @@ -481,6 +481,62 @@ static void gmc_v7_0_set_fault_enable_default(struct amdgpu_device *adev, } /** + * gmc_v7_0_set_prt - set PRT VM fault + * + * @adev: amdgpu_device pointer + * @enable: enable/disable VM fault handling for PRT + */ +static void gmc_v7_0_set_prt(struct amdgpu_device *adev, bool enable) +{ + uint32_t tmp; + + if (enable && !adev->mc.prt_warning) { + dev_warn(adev->dev, "Disabling VM faults because of PRT request!\n"); + adev->mc.prt_warning = true; + } + + tmp = RREG32(mmVM_PRT_CNTL); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + CB_DISABLE_READ_FAULT_ON_UNMAPPED_ACCESS, enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + CB_DISABLE_WRITE_FAULT_ON_UNMAPPED_ACCESS, enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + TC_DISABLE_READ_FAULT_ON_UNMAPPED_ACCESS, enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + TC_DISABLE_WRITE_FAULT_ON_UNMAPPED_ACCESS, enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + L2_CACHE_STORE_INVALID_ENTRIES, enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + L1_TLB_STORE_INVALID_ENTRIES, enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + MASK_PDE0_FAULT, enable); + WREG32(mmVM_PRT_CNTL, tmp); + + if (enable) { + uint32_t low = AMDGPU_VA_RESERVED_SIZE >> AMDGPU_GPU_PAGE_SHIFT; + uint32_t high = adev->vm_manager.max_pfn; + + WREG32(mmVM_PRT_APERTURE0_LOW_ADDR, low); + WREG32(mmVM_PRT_APERTURE1_LOW_ADDR, low); + WREG32(mmVM_PRT_APERTURE2_LOW_ADDR, low); + WREG32(mmVM_PRT_APERTURE3_LOW_ADDR, low); + WREG32(mmVM_PRT_APERTURE0_HIGH_ADDR, high); + WREG32(mmVM_PRT_APERTURE1_HIGH_ADDR, high); + WREG32(mmVM_PRT_APERTURE2_HIGH_ADDR, high); + WREG32(mmVM_PRT_APERTURE3_HIGH_ADDR, high); + } else { + WREG32(mmVM_PRT_APERTURE0_LOW_ADDR, 0xfffffff); + WREG32(mmVM_PRT_APERTURE1_LOW_ADDR, 0xfffffff); + WREG32(mmVM_PRT_APERTURE2_LOW_ADDR, 0xfffffff); + WREG32(mmVM_PRT_APERTURE3_LOW_ADDR, 0xfffffff); + WREG32(mmVM_PRT_APERTURE0_HIGH_ADDR, 0x0); + WREG32(mmVM_PRT_APERTURE1_HIGH_ADDR, 0x0); + WREG32(mmVM_PRT_APERTURE2_HIGH_ADDR, 0x0); + WREG32(mmVM_PRT_APERTURE3_HIGH_ADDR, 0x0); + } +} + +/** * gmc_v7_0_gart_enable - gart enable * * @adev: amdgpu_device pointer @@ -1259,6 +1315,7 @@ static const struct amd_ip_funcs gmc_v7_0_ip_funcs = { static const struct amdgpu_gart_funcs gmc_v7_0_gart_funcs = { .flush_gpu_tlb = gmc_v7_0_gart_flush_gpu_tlb, .set_pte_pde = gmc_v7_0_gart_set_pte_pde, + .set_prt = gmc_v7_0_set_prt, }; static const struct amdgpu_irq_src_funcs gmc_v7_0_irq_funcs = { |