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drm/amdkfd: apply uncached flag for aldebaran

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The flag is only applied on fine-grained memory.

Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Reviewed-by: Oak Zeng <Oak.Zeng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2020-05-13 14:29:59 -04:00 • committed by Alex Deucher
parent 2e2f197f4c
commit c3c9e0faf4
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
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@ -405,6 +405,7 @@ static uint64_t get_pte_flags(struct amdgpu_device *adev, struct kgd_mem *mem)
{
struct amdgpu_device *bo_adev = amdgpu_ttm_adev(mem->bo->tbo.bdev);
bool coherent = mem->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_COHERENT;
bool uncached = mem->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_UNCACHED;
uint32_t mapping_flags;
uint64_t pte_flags;
bool snoop = false;
@ -429,7 +430,12 @@ static uint64_t get_pte_flags(struct amdgpu_device *adev, struct kgd_mem *mem)
}
break;
case CHIP_ALDEBARAN:
if (mem->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_VRAM) {
if (coherent && uncached) {
if (adev->gmc.xgmi.connected_to_cpu ||
!(mem->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_VRAM))
snoop = true;
mapping_flags |= AMDGPU_VM_MTYPE_UC;
} else if (mem->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_VRAM) {
if (bo_adev == adev) {
mapping_flags |= AMDGPU_VM_MTYPE_RW;
if (adev->gmc.xgmi.connected_to_cpu)