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| author | Sreekant Somasekharan <sreekant.somasekharan@amd.com> | 2024-03-26 16:19:28 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-05-02 16:18:13 -0400 |
| commit | 628e1ace23796d74a34d85833a60dd0d20ecbdb7 (patch) | |
| tree | ac3268323de95a0aa7461c8c081fff5399648743 /drivers/gpu/drm/amd/amdgpu | |
| parent | drm/amd/amdkfd: Add GFX12 PTE flag to SVM get PTE function (diff) | |
| download | linux-628e1ace23796d74a34d85833a60dd0d20ecbdb7.tar.gz linux-628e1ace23796d74a34d85833a60dd0d20ecbdb7.zip | |
drm/amdkfd: mark GFX12 system and peer GPU memory mappings as MTYPE_NC
Due to a HW bug, the system memory mappings and peer GPU mappings
on GFX12 need to be marked as MTYPE_NC.
Cc: Joe Greathouse <joseph.greathouse@amd.com>
Cc: David Belanger <david.belanger@amd.com>
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Signed-off-by: Sreekant Somasekharan <sreekant.somasekharan@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c index c24f5bd3e09c..3e6676fdc187 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c @@ -497,6 +497,10 @@ static void gmc_v12_0_get_vm_pte(struct amdgpu_device *adev, uint64_t *flags) { struct amdgpu_bo *bo = mapping->bo_va->base.bo; + struct amdgpu_device *bo_adev = amdgpu_ttm_adev(bo->tbo.bdev); + bool coherent = bo->flags & AMDGPU_GEM_CREATE_COHERENT; + bool is_system = bo->tbo.resource->mem_type == TTM_PL_SYSTEM; + *flags &= ~AMDGPU_PTE_EXECUTABLE; *flags |= mapping->flags & AMDGPU_PTE_EXECUTABLE; @@ -515,6 +519,11 @@ static void gmc_v12_0_get_vm_pte(struct amdgpu_device *adev, AMDGPU_GEM_CREATE_UNCACHED)) *flags = (*flags & ~AMDGPU_PTE_MTYPE_GFX12_MASK) | AMDGPU_PTE_MTYPE_GFX12(MTYPE_UC); + + /* WA for HW bug */ + if ((bo && is_system) || ((bo_adev != adev) && coherent)) + *flags |= AMDGPU_PTE_MTYPE_GFX12(MTYPE_NC); + } static unsigned gmc_v12_0_get_vbios_fb_size(struct amdgpu_device *adev) |