diff options
| author | David Belanger <david.belanger@amd.com> | 2024-07-02 17:56:41 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-03-18 16:29:52 -0400 |
| commit | 35b6162bb790555ad56b7f0d120e307b8334d778 (patch) | |
| tree | 2716d5d9f368958bd23e48c8953ef63583b33886 /drivers/gpu | |
| parent | 86730b5261d4d8dae3f5b97709d40d694ecf1ddf (diff) | |
drm/amdgpu: Restore uncached behaviour on GFX12
Always use MTYPE_UC if UNCACHED flag is specified.
This makes kernarg region uncached and it restores
usermode cache disable debug flag functionality.
Do not set MTYPE_UC for COHERENT flag, on GFX12 coherence is handled by
shader code.
Signed-off-by: David Belanger <david.belanger@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit eb6cdfb807d038d9b9986b5c87188f28a4071eae)
Cc: stable@vger.kernel.org # 6.12.x
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c | 22 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 8 |
2 files changed, 3 insertions, 27 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c index 0fb88e6d5d54..c3c144a4f45e 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c @@ -501,9 +501,6 @@ 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; - bool coherent, is_system; - *flags &= ~AMDGPU_PTE_EXECUTABLE; *flags |= mapping->flags & AMDGPU_PTE_EXECUTABLE; @@ -519,26 +516,11 @@ static void gmc_v12_0_get_vm_pte(struct amdgpu_device *adev, *flags &= ~AMDGPU_PTE_VALID; } - if (!bo) - return; - - if (bo->flags & (AMDGPU_GEM_CREATE_COHERENT | - AMDGPU_GEM_CREATE_UNCACHED)) - *flags = AMDGPU_PTE_MTYPE_GFX12(*flags, MTYPE_UC); - - bo_adev = amdgpu_ttm_adev(bo->tbo.bdev); - coherent = bo->flags & AMDGPU_GEM_CREATE_COHERENT; - is_system = bo->tbo.resource && - (bo->tbo.resource->mem_type == TTM_PL_TT || - bo->tbo.resource->mem_type == AMDGPU_PL_PREEMPT); - if (bo && bo->flags & AMDGPU_GEM_CREATE_GFX12_DCC) *flags |= AMDGPU_PTE_DCC; - /* WA for HW bug */ - if (is_system || ((bo_adev != adev) && coherent)) - *flags = AMDGPU_PTE_MTYPE_GFX12(*flags, MTYPE_NC); - + if (bo && bo->flags & AMDGPU_GEM_CREATE_UNCACHED) + *flags = AMDGPU_PTE_MTYPE_GFX12(*flags, MTYPE_UC); } static unsigned gmc_v12_0_get_vbios_fb_size(struct amdgpu_device *adev) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index bd3e20d981e0..9477a4adcd36 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -1286,13 +1286,7 @@ svm_range_get_pte_flags(struct kfd_node *node, break; case IP_VERSION(12, 0, 0): case IP_VERSION(12, 0, 1): - if (domain == SVM_RANGE_VRAM_DOMAIN) { - if (bo_node != node) - mapping_flags |= AMDGPU_VM_MTYPE_NC; - } else { - mapping_flags |= coherent ? - AMDGPU_VM_MTYPE_UC : AMDGPU_VM_MTYPE_NC; - } + mapping_flags |= AMDGPU_VM_MTYPE_NC; break; default: mapping_flags |= coherent ? |