diff options
| author | David Francis <David.Francis@amd.com> | 2023-07-21 11:14:24 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-09-20 16:24:06 -0400 |
| commit | 5f248462c69d5ea7b54a88c62edb73f626d1528d (patch) | |
| tree | 8840e1bb0fcb471cf1c480513b3390c8e1b1b428 /drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | |
| parent | d92e55565c53eff6d0c549090487d0a1ef704e1c (diff) | |
drm/amdgpu: Add EXT_COHERENT memory allocation flags
These flags (for GEM and SVM allocations) allocate
memory that allows for system-scope atomic semantics.
On GFX943 these flags cause caches to be avoided on
non-local memory.
On all other ASICs they are identical in functionality to the
equivalent COHERENT flags.
Corresponding Thunk patch is at
https://github.com/RadeonOpenCompute/ROCT-Thunk-Interface/pull/88
Reviewed-by: David Yat Sin <David.YatSin@amd.com>
Signed-off-by: David Francis <David.Francis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 268ee533e7c1..2936a0fb7527 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -1187,7 +1187,8 @@ static void gmc_v9_0_get_coherence_flags(struct amdgpu_device *adev, { struct amdgpu_device *bo_adev = amdgpu_ttm_adev(bo->tbo.bdev); bool is_vram = bo->tbo.resource->mem_type == TTM_PL_VRAM; - bool coherent = bo->flags & AMDGPU_GEM_CREATE_COHERENT; + bool coherent = bo->flags & (AMDGPU_GEM_CREATE_COHERENT | AMDGPU_GEM_CREATE_EXT_COHERENT); + bool ext_coherent = bo->flags & AMDGPU_GEM_CREATE_EXT_COHERENT; bool uncached = bo->flags & AMDGPU_GEM_CREATE_UNCACHED; struct amdgpu_vm *vm = mapping->bo_va->base.vm; unsigned int mtype_local, mtype; @@ -1257,6 +1258,8 @@ static void gmc_v9_0_get_coherence_flags(struct amdgpu_device *adev, snoop = true; if (uncached) { mtype = MTYPE_UC; + } else if (ext_coherent) { + mtype = is_local ? MTYPE_CC : MTYPE_UC; } else if (adev->flags & AMD_IS_APU) { mtype = is_local ? mtype_local : MTYPE_NC; } else { |