dev/drm/i915_mem.c

136 static struct mem_block *alloc_block(struct mem_block *heap, int size,
142 	for (p = heap->next; p != heap; p = p->next) {
151 static struct mem_block *find_block(struct mem_block *heap, int start)
155 	for (p = heap->next; p != heap; p = p->next)
167 	 * 'heap' to stop it being subsumed.
186 /* Initialize.  How to check for an uninitialized heap?
188 static int init_heap(struct mem_block **heap, int start, int size)
195 	*heap = drm_alloc(sizeof(**heap), DRM_MEM_BUFLISTS);
196 	if (!*heap) {
204 	blocks->next = blocks->prev = *heap;
206 	memset(*heap, 0, sizeof(**heap));
207 	(*heap)->file_priv = (struct drm_file *) - 1;
208 	(*heap)->next = (*heap)->prev = blocks;
215 		      struct mem_block *heap)
219 	if (!heap || !heap->next)
222 	for (p = heap->next; p != heap; p = p->next) {
230 	 * 'heap' to stop it being subsumed.
232 	for (p = heap->next; p != heap; p = p->next) {
245 void i915_mem_takedown(struct mem_block **heap)
249 	if (!*heap)
252 	for (p = (*heap)->next; p != *heap;) {
258 	drm_free(*heap, sizeof(**heap), DRM_MEM_BUFLISTS);
259 	*heap = NULL;
279 	struct mem_block *block, **heap;
286 	heap = get_heap(dev_priv, alloc->region);
287 	if (!heap || !*heap)
296 	block = alloc_block(*heap, alloc->size, alloc->alignment, file_priv);
317 	struct mem_block *block, **heap;
324 	heap = get_heap(dev_priv, memfree->region);
325 	if (!heap || !*heap)
328 	block = find_block(*heap, memfree->region_offset);
345 	struct mem_block **heap;
352 	heap = get_heap(dev_priv, initheap->region);
353 	if (!heap)
356 	if (*heap) {
357 		DRM_ERROR("heap already initialized?");
361 	return init_heap(heap, initheap->start, initheap->size);
369 	struct mem_block **heap;
376 	heap = get_heap( dev_priv, destroyheap->region );
377 	if (!heap) {
382 	if (!*heap) {
383 		DRM_ERROR("heap not initialized?");
387 	i915_mem_takedown( heap );