Commit c3c9e0fa authored by Eric Huang's avatar Eric Huang Committed by Alex Deucher
Browse files

drm/amdkfd: apply uncached flag for aldebaran 



The flag is only applied on fine-grained memory.

Signed-off-by: default avatarEric Huang <jinhuieric.huang@amd.com>
Reviewed-by: default avatarOak Zeng <Oak.Zeng@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2e2f197f

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c

+7 −1
Original line number Diff line number Diff line
@@ -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)