drm/amdgpu: Reduce mem_type to domain double indirection

All apart from AMDGPU_GEM_DOMAIN_GTT memory domains map 1:1 to TTM
placements. And the former be either AMDGPU_PL_PREEMPT or TTM_PL_TT,
depending on AMDGPU_GEM_CREATE_PREEMPTIBLE.

Simplify a few places in the code which convert the TTM placement into
a domain by checking against the current placement directly.

In the conversion AMDGPU_PL_PREEMPT either does not have to be handled
because amdgpu_mem_type_to_domain() cannot return that value anyway.

v2:
 * Remove AMDGPU_PL_PREEMPT handling.

v3:
 * Rebase.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by: Christian König <christian.koenig@amd.com> # v1
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> # v2
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -165,8 +165,7 @@ static struct sg_table *amdgpu_dma_buf_map(struct dma_buf_attachment *attach,
 		if (r)
 			return ERR_PTR(r);
 
-	} else if (!(amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type) &
-		     AMDGPU_GEM_DOMAIN_GTT)) {
+	} else if (bo->tbo.resource->mem_type != TTM_PL_TT) {
 		return ERR_PTR(-EBUSY);
 	}
 

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

@@ -983,12 +983,11 @@ int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
 
 	ttm_bo_pin(&bo->tbo);
 
-	domain = amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type);
-	if (domain == AMDGPU_GEM_DOMAIN_VRAM) {
+	if (bo->tbo.resource->mem_type == TTM_PL_VRAM) {
 		atomic64_add(amdgpu_bo_size(bo), &adev->vram_pin_size);
 		atomic64_add(amdgpu_vram_mgr_bo_visible_size(bo),
 			     &adev->visible_pin_size);
-	} else if (domain == AMDGPU_GEM_DOMAIN_GTT) {
+	} else if (bo->tbo.resource->mem_type == TTM_PL_TT) {
 		atomic64_add(amdgpu_bo_size(bo), &adev->gart_pin_size);
 	}
 
@@ -1293,7 +1292,6 @@ void amdgpu_bo_get_memory(struct amdgpu_bo *bo,
 	struct ttm_resource *res = bo->tbo.resource;
 	uint64_t size = amdgpu_bo_size(bo);
 	struct drm_gem_object *obj;
-	unsigned int domain;
 	bool shared;
 
 	/* Abort if the BO doesn't currently have a backing store */
@@ -1303,21 +1301,20 @@ void amdgpu_bo_get_memory(struct amdgpu_bo *bo,
 	obj = &bo->tbo.base;
 	shared = drm_gem_object_is_shared_for_memory_stats(obj);
 
-	domain = amdgpu_mem_type_to_domain(res->mem_type);
-	switch (domain) {
-	case AMDGPU_GEM_DOMAIN_VRAM:
+	switch (res->mem_type) {
+	case TTM_PL_VRAM:
 		stats->vram += size;
-		if (amdgpu_res_cpu_visible(adev, bo->tbo.resource))
+		if (amdgpu_res_cpu_visible(adev, res))
 			stats->visible_vram += size;
 		if (shared)
 			stats->vram_shared += size;
 		break;
-	case AMDGPU_GEM_DOMAIN_GTT:
+	case TTM_PL_TT:
 		stats->gtt += size;
 		if (shared)
 			stats->gtt_shared += size;
 		break;
-	case AMDGPU_GEM_DOMAIN_CPU:
+	case TTM_PL_SYSTEM:
 	default:
 		stats->cpu += size;
 		if (shared)
@@ -1330,7 +1327,7 @@ void amdgpu_bo_get_memory(struct amdgpu_bo *bo,
 		if (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
 			stats->requested_visible_vram += size;
 
-		if (domain != AMDGPU_GEM_DOMAIN_VRAM) {
+		if (res->mem_type != TTM_PL_VRAM) {
 			stats->evicted_vram += size;
 			if (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
 				stats->evicted_visible_vram += size;
@@ -1603,20 +1600,18 @@ u64 amdgpu_bo_print_info(int id, struct amdgpu_bo *bo, struct seq_file *m)
 	u64 size;
 
 	if (dma_resv_trylock(bo->tbo.base.resv)) {
-		unsigned int domain;
 
-		domain = amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type);
-		switch (domain) {
-		case AMDGPU_GEM_DOMAIN_VRAM:
+		switch (bo->tbo.resource->mem_type) {
+		case TTM_PL_VRAM:
 			if (amdgpu_res_cpu_visible(adev, bo->tbo.resource))
 				placement = "VRAM VISIBLE";
 			else
 				placement = "VRAM";
 			break;
-		case AMDGPU_GEM_DOMAIN_GTT:
+		case TTM_PL_TT:
 			placement = "GTT";
 			break;
-		case AMDGPU_GEM_DOMAIN_CPU:
+		case TTM_PL_SYSTEM:
 		default:
 			placement = "CPU";
 			break;