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@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c | 21 ++-------------------
drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 8 +-------
2 files changed, 3 insertions(+), 26 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
index fd3ac483760e..542225eb13b5 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
@@ -498,9 +498,6 @@ 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;
@@ -516,25 +513,11 @@ 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->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 bd9c2921e0dc..7b671aefab01 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -1248,13 +1248,7 @@ 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 ?
--
2.41.0
