drm/amdgpu: Change extended-scope MTYPE on GC 9.4.3

Change local memory type to MTYPE_UC on revision id 0

Signed-off-by: David Yat Sin <David.YatSin@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: dayatsin-amd

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

@@ -1180,7 +1180,10 @@ static void gmc_v9_0_get_coherence_flags(struct amdgpu_device *adev,
 		if (uncached) {
 			mtype = MTYPE_UC;
 		} else if (ext_coherent) {
-			mtype = is_local ? MTYPE_CC : MTYPE_UC;
+			if (adev->rev_id)
+				mtype = is_local ? MTYPE_CC : MTYPE_UC;
+			else
+				mtype = MTYPE_UC;
 		} else if (adev->flags & AMD_IS_APU) {
 			mtype = is_local ? mtype_local : MTYPE_NC;
 		} else {
@@ -1301,7 +1304,7 @@ static void gmc_v9_0_override_vm_pte_flags(struct amdgpu_device *adev,
 
 			*flags = (*flags & ~AMDGPU_PTE_MTYPE_VG10_MASK) |
 				 AMDGPU_PTE_MTYPE_VG10(mtype_local);
-		} else {
+		} else if (adev->rev_id) {
 			/* MTYPE_UC case */
 			*flags = (*flags & ~AMDGPU_PTE_MTYPE_VG10_MASK) |
 				 AMDGPU_PTE_MTYPE_VG10(MTYPE_CC);

drivers/gpu/drm/amd/amdkfd/kfd_svm.c

@@ -1255,9 +1255,11 @@ svm_range_get_pte_flags(struct kfd_node *node,
 		}
 		break;
 	case IP_VERSION(9, 4, 3):
-		mtype_local = amdgpu_mtype_local == 1 ? AMDGPU_VM_MTYPE_NC :
-			      (amdgpu_mtype_local == 2 || ext_coherent ?
-					AMDGPU_VM_MTYPE_CC : AMDGPU_VM_MTYPE_RW);
+		if (ext_coherent)
+			mtype_local = node->adev->rev_id ? AMDGPU_VM_MTYPE_CC : AMDGPU_VM_MTYPE_UC;
+		else
+			mtype_local = amdgpu_mtype_local == 1 ? AMDGPU_VM_MTYPE_NC :
+				amdgpu_mtype_local == 2 ? AMDGPU_VM_MTYPE_CC : AMDGPU_VM_MTYPE_RW;
 		snoop = true;
 		if (uncached) {
 			mapping_flags |= AMDGPU_VM_MTYPE_UC;