drm/ttm: cleanup ttm_resource_compat

Move that function into the resource handling and remove an unused parameter.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210831112110.113196-1-christian.koenig@amd.com

drivers/gpu/drm/ttm/ttm_bo.c

@@ -924,57 +924,11 @@ static int ttm_bo_move_buffer(struct ttm_buffer_object *bo,
 	return ret;
 }
 
-static bool ttm_bo_places_compat(const struct ttm_place *places,
-				 unsigned num_placement,
-				 struct ttm_resource *mem,
-				 uint32_t *new_flags)
-{
-	unsigned i;
-
-	if (mem->placement & TTM_PL_FLAG_TEMPORARY)
-		return false;
-
-	for (i = 0; i < num_placement; i++) {
-		const struct ttm_place *heap = &places[i];
-
-		if ((mem->start < heap->fpfn ||
-		     (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn)))
-			continue;
-
-		*new_flags = heap->flags;
-		if ((mem->mem_type == heap->mem_type) &&
-		    (!(*new_flags & TTM_PL_FLAG_CONTIGUOUS) ||
-		     (mem->placement & TTM_PL_FLAG_CONTIGUOUS)))
-			return true;
-	}
-	return false;
-}
-
-bool ttm_bo_mem_compat(struct ttm_placement *placement,
-		       struct ttm_resource *mem,
-		       uint32_t *new_flags)
-{
-	if (ttm_bo_places_compat(placement->placement, placement->num_placement,
-				 mem, new_flags))
-		return true;
-
-	if ((placement->busy_placement != placement->placement ||
-	     placement->num_busy_placement > placement->num_placement) &&
-	    ttm_bo_places_compat(placement->busy_placement,
-				 placement->num_busy_placement,
-				 mem, new_flags))
-		return true;
-
-	return false;
-}
-EXPORT_SYMBOL(ttm_bo_mem_compat);
-
 int ttm_bo_validate(struct ttm_buffer_object *bo,
 		    struct ttm_placement *placement,
 		    struct ttm_operation_ctx *ctx)
 {
 	int ret;
-	uint32_t new_flags;
 
 	dma_resv_assert_held(bo->base.resv);
 
@@ -987,7 +941,7 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
 	/*
 	 * Check whether we need to move buffer.
 	 */
-	if (!ttm_bo_mem_compat(placement, bo->resource, &new_flags)) {
+	if (!ttm_resource_compat(bo->resource, placement)) {
 		ret = ttm_bo_move_buffer(bo, placement, ctx);
 		if (ret)
 			return ret;

drivers/gpu/drm/ttm/ttm_resource.c

@@ -67,6 +67,55 @@ void ttm_resource_free(struct ttm_buffer_object *bo, struct ttm_resource **res)
 }
 EXPORT_SYMBOL(ttm_resource_free);
 
+static bool ttm_resource_places_compat(struct ttm_resource *res,
+				       const struct ttm_place *places,
+				       unsigned num_placement)
+{
+	unsigned i;
+
+	if (res->placement & TTM_PL_FLAG_TEMPORARY)
+		return false;
+
+	for (i = 0; i < num_placement; i++) {
+		const struct ttm_place *heap = &places[i];
+
+		if (res->start < heap->fpfn || (heap->lpfn &&
+		    (res->start + res->num_pages) > heap->lpfn))
+			continue;
+
+		if ((res->mem_type == heap->mem_type) &&
+		    (!(heap->flags & TTM_PL_FLAG_CONTIGUOUS) ||
+		     (res->placement & TTM_PL_FLAG_CONTIGUOUS)))
+			return true;
+	}
+	return false;
+}
+
+/**
+ * ttm_resource_compat - check if resource is compatible with placement
+ *
+ * @res: the resource to check
+ * @placement: the placement to check against
+ *
+ * Returns true if the placement is compatible.
+ */
+bool ttm_resource_compat(struct ttm_resource *res,
+			 struct ttm_placement *placement)
+{
+	if (ttm_resource_places_compat(res, placement->placement,
+				       placement->num_placement))
+		return true;
+
+	if ((placement->busy_placement != placement->placement ||
+	     placement->num_busy_placement > placement->num_placement) &&
+	    ttm_resource_places_compat(res, placement->busy_placement,
+				       placement->num_busy_placement))
+		return true;
+
+	return false;
+}
+EXPORT_SYMBOL(ttm_resource_compat);
+
 /**
  * ttm_resource_manager_init
  *

drivers/gpu/drm/vmwgfx/vmwgfx_bo.c

@@ -94,7 +94,6 @@ int vmw_bo_pin_in_placement(struct vmw_private *dev_priv,
 	struct ttm_operation_ctx ctx = {interruptible, false };
 	struct ttm_buffer_object *bo = &buf->base;
 	int ret;
-	uint32_t new_flags;
 
 	vmw_execbuf_release_pinned_bo(dev_priv);
 
@@ -103,8 +102,8 @@ int vmw_bo_pin_in_placement(struct vmw_private *dev_priv,
 		goto err;
 
 	if (buf->base.pin_count > 0)
-		ret = ttm_bo_mem_compat(placement, bo->resource,
-					&new_flags) == true ? 0 : -EINVAL;
+		ret = ttm_resource_compat(bo->resource, placement)
+			? 0 : -EINVAL;
 	else
 		ret = ttm_bo_validate(bo, placement, &ctx);
 
@@ -136,7 +135,6 @@ int vmw_bo_pin_in_vram_or_gmr(struct vmw_private *dev_priv,
 	struct ttm_operation_ctx ctx = {interruptible, false };
 	struct ttm_buffer_object *bo = &buf->base;
 	int ret;
-	uint32_t new_flags;
 
 	vmw_execbuf_release_pinned_bo(dev_priv);
 
@@ -145,8 +143,8 @@ int vmw_bo_pin_in_vram_or_gmr(struct vmw_private *dev_priv,
 		goto err;
 
 	if (buf->base.pin_count > 0) {
-		ret = ttm_bo_mem_compat(&vmw_vram_gmr_placement, bo->resource,
-					&new_flags) == true ? 0 : -EINVAL;
+		ret = ttm_resource_compat(bo->resource, &vmw_vram_gmr_placement)
+			? 0 : -EINVAL;
 		goto out_unreserve;
 	}
 
@@ -208,7 +206,6 @@ int vmw_bo_pin_in_start_of_vram(struct vmw_private *dev_priv,
 	struct ttm_placement placement;
 	struct ttm_place place;
 	int ret = 0;
-	uint32_t new_flags;
 
 	place = vmw_vram_placement.placement[0];
 	place.lpfn = bo->resource->num_pages;
@@ -236,8 +233,8 @@ int vmw_bo_pin_in_start_of_vram(struct vmw_private *dev_priv,
 	}
 
 	if (buf->base.pin_count > 0)
-		ret = ttm_bo_mem_compat(&placement, bo->resource,
-					&new_flags) == true ? 0 : -EINVAL;
+		ret = ttm_resource_compat(bo->resource, &placement)
+			? 0 : -EINVAL;
 	else
 		ret = ttm_bo_validate(bo, &placement, &ctx);
 

include/drm/ttm/ttm_bo_api.h

@@ -264,18 +264,6 @@ static inline int ttm_bo_wait_ctx(struct ttm_buffer_object *bo, struct ttm_opera
 	return ttm_bo_wait(bo, ctx->interruptible, ctx->no_wait_gpu);
 }
 
-/**
- * ttm_bo_mem_compat - Check if proposed placement is compatible with a bo
- *
- * @placement:  Return immediately if buffer is busy.
- * @mem:  The struct ttm_resource indicating the region where the bo resides
- * @new_flags: Describes compatible placement found
- *
- * Returns true if the placement is compatible
- */
-bool ttm_bo_mem_compat(struct ttm_placement *placement, struct ttm_resource *mem,
-		       uint32_t *new_flags);
-
 /**
  * ttm_bo_validate
  *

include/drm/ttm/ttm_resource.h

@@ -40,6 +40,7 @@ struct ttm_resource_manager;
 struct ttm_resource;
 struct ttm_place;
 struct ttm_buffer_object;
+struct ttm_placement;
 struct dma_buf_map;
 struct io_mapping;
 struct sg_table;
@@ -266,6 +267,8 @@ int ttm_resource_alloc(struct ttm_buffer_object *bo,
 		       const struct ttm_place *place,
 		       struct ttm_resource **res);
 void ttm_resource_free(struct ttm_buffer_object *bo, struct ttm_resource **res);
+bool ttm_resource_compat(struct ttm_resource *res,
+			 struct ttm_placement *placement);
 
 void ttm_resource_manager_init(struct ttm_resource_manager *man,
 			       unsigned long p_size);