dev/drm/radeon_mem.c

86 static struct mem_block *alloc_block(struct mem_block *heap, int size,
92 	list_for_each(p, heap) {
101 static struct mem_block *find_block(struct mem_block *heap, int start)
105 	list_for_each(p, heap)
117 	 * 'heap' to stop it being subsumed.
136 /* Initialize.  How to check for an uninitialized heap?
138 static int init_heap(struct mem_block **heap, int start, int size)
145 	*heap = drm_alloc(sizeof(**heap), DRM_MEM_BUFS);
146 	if (!*heap) {
154 	blocks->next = blocks->prev = *heap;
156 	memset(*heap, 0, sizeof(**heap));
157 	(*heap)->file_priv = (struct drm_file *) - 1;
158 	(*heap)->next = (*heap)->prev = blocks;
164 void radeon_mem_release(struct drm_file *file_priv, struct mem_block *heap)
168 	if (!heap || !heap->next)
171 	list_for_each(p, heap) {
177 	 * 'heap' to stop it being subsumed.
179 	list_for_each(p, heap) {
192 void radeon_mem_takedown(struct mem_block **heap)
196 	if (!*heap)
199 	for (p = (*heap)->next; p != *heap;) {
205 	drm_free(*heap, sizeof(**heap), DRM_MEM_DRIVER);
206 	*heap = NULL;
227 	struct mem_block *block, **heap;
234 	heap = get_heap(dev_priv, alloc->region);
235 	if (!heap || !*heap)
244 	block = alloc_block(*heap, alloc->size, alloc->alignment, file_priv);
262 	struct mem_block *block, **heap;
269 	heap = get_heap(dev_priv, memfree->region);
270 	if (!heap || !*heap)
273 	block = find_block(*heap, memfree->region_offset);
288 	struct mem_block **heap;
295 	heap = get_heap(dev_priv, initheap->region);
296 	if (!heap)
299 	if (*heap) {
300 		DRM_ERROR("heap already initialized?");
304 	return init_heap(heap, initheap->start, initheap->size);