drm/amdgpu: set GART PTE asic specific flags

Set asic specific gart pte flags in the gmc IP module for
each asic.

Signed-off-by: Alex Xie <AlexBin.Xie@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -524,6 +524,10 @@ struct amdgpu_gart {
 	struct page			**pages;
 #endif
 	bool				ready;
+
+	/* Asic default pte flags */
+	uint64_t			gart_pte_flags;
+
 	const struct amdgpu_gart_funcs *gart_funcs;
 };
 

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

@@ -1042,9 +1042,7 @@ uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
 			flags |= AMDGPU_PTE_SNOOPED;
 	}
 
-	if (adev->asic_type >= CHIP_TONGA)
-		flags |= AMDGPU_PTE_EXECUTABLE;
-
+	flags |= adev->gart.gart_pte_flags;
 	flags |= AMDGPU_PTE_READABLE;
 
 	if (!amdgpu_ttm_tt_is_readonly(ttm))

drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c

@@ -554,6 +554,7 @@ static int gmc_v6_0_gart_init(struct amdgpu_device *adev)
 	if (r)
 		return r;
 	adev->gart.table_size = adev->gart.num_gpu_pages * 8;
+	adev->gart.gart_pte_flags = 0;
 	return amdgpu_gart_table_vram_alloc(adev);
 }
 

drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c

@@ -658,6 +658,7 @@ static int gmc_v7_0_gart_init(struct amdgpu_device *adev)
 	if (r)
 		return r;
 	adev->gart.table_size = adev->gart.num_gpu_pages * 8;
+	adev->gart.gart_pte_flags = 0;
 	return amdgpu_gart_table_vram_alloc(adev);
 }
 

drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c

@@ -789,6 +789,7 @@ static int gmc_v8_0_gart_init(struct amdgpu_device *adev)
 	if (r)
 		return r;
 	adev->gart.table_size = adev->gart.num_gpu_pages * 8;
+	adev->gart.gart_pte_flags = AMDGPU_PTE_EXECUTABLE;
 	return amdgpu_gart_table_vram_alloc(adev);
 }