1 /**************************************************************************
3 * Copyright 2006 Tungsten Graphics, Inc., Bismarck., ND., USA.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
27 **************************************************************************/
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
33 * Simple memory manager interface that keeps track on allocate regions on a
34 * per "owner" basis. All regions associated with an "owner" can be released
35 * with a simple call. Typically if the "owner" exists. The owner is any
36 * "unsigned long" identifier. Can typically be a pointer to a file private
37 * struct or a context identifier.
40 * Thomas Hellström <thomas-at-tungstengraphics-dot-com>
43 #include "dev/drm/drmP.h"
44 #include "dev/drm/drm_sman.h"
46 struct drm_owner_item {
47 struct drm_hash_item owner_hash;
48 struct list_head sman_list;
49 struct list_head mem_blocks;
52 void drm_sman_takedown(struct drm_sman * sman)
54 drm_ht_remove(&sman->user_hash_tab);
55 drm_ht_remove(&sman->owner_hash_tab);
57 drm_free(sman->mm, sman->num_managers * sizeof(*sman->mm),
62 drm_sman_init(struct drm_sman * sman, unsigned int num_managers,
63 unsigned int user_order, unsigned int owner_order)
67 sman->mm = (struct drm_sman_mm *) drm_calloc(num_managers,
68 sizeof(*sman->mm), DRM_MEM_MM);
73 sman->num_managers = num_managers;
74 INIT_LIST_HEAD(&sman->owner_items);
75 ret = drm_ht_create(&sman->owner_hash_tab, owner_order);
78 ret = drm_ht_create(&sman->user_hash_tab, user_order);
82 drm_ht_remove(&sman->owner_hash_tab);
84 drm_free(sman->mm, num_managers * sizeof(*sman->mm), DRM_MEM_MM);
89 static void *drm_sman_mm_allocate(void *private, unsigned long size,
92 struct drm_mm *mm = (struct drm_mm *) private;
93 struct drm_mm_node *tmp;
95 tmp = drm_mm_search_free(mm, size, alignment, 1);
99 /* This could be non-atomic, but we are called from a locked path */
100 tmp = drm_mm_get_block_atomic(tmp, size, alignment);
104 static void drm_sman_mm_free(void *private, void *ref)
106 struct drm_mm_node *node = (struct drm_mm_node *) ref;
108 drm_mm_put_block(node);
111 static void drm_sman_mm_destroy(void *private)
113 struct drm_mm *mm = (struct drm_mm *) private;
115 drm_free(mm, sizeof(*mm), DRM_MEM_MM);
118 static unsigned long drm_sman_mm_offset(void *private, void *ref)
120 struct drm_mm_node *node = (struct drm_mm_node *) ref;
125 drm_sman_set_range(struct drm_sman * sman, unsigned int manager,
126 unsigned long start, unsigned long size)
128 struct drm_sman_mm *sman_mm;
132 KASSERT(manager < sman->num_managers, ("Invalid manager"));
134 sman_mm = &sman->mm[manager];
135 mm = malloc(sizeof(*mm), DRM_MEM_MM, M_NOWAIT | M_ZERO);
139 sman_mm->private = mm;
140 ret = drm_mm_init(mm, start, size);
143 drm_free(mm, sizeof(*mm), DRM_MEM_MM);
147 sman_mm->allocate = drm_sman_mm_allocate;
148 sman_mm->free = drm_sman_mm_free;
149 sman_mm->destroy = drm_sman_mm_destroy;
150 sman_mm->offset = drm_sman_mm_offset;
156 drm_sman_set_manager(struct drm_sman * sman, unsigned int manager,
157 struct drm_sman_mm * allocator)
159 KASSERT(manager < sman->num_managers, ("Invalid manager"));
160 sman->mm[manager] = *allocator;
165 static struct drm_owner_item *drm_sman_get_owner_item(struct drm_sman * sman,
169 struct drm_hash_item *owner_hash_item;
170 struct drm_owner_item *owner_item;
172 ret = drm_ht_find_item(&sman->owner_hash_tab, owner, &owner_hash_item);
174 return drm_hash_entry(owner_hash_item, struct drm_owner_item,
178 owner_item = malloc(sizeof(*owner_item), DRM_MEM_MM, M_NOWAIT | M_ZERO);
182 INIT_LIST_HEAD(&owner_item->mem_blocks);
183 owner_item->owner_hash.key = owner;
184 DRM_DEBUG("owner_item = %p, mem_blocks = %p\n", owner_item, &owner_item->mem_blocks);
185 if (drm_ht_insert_item(&sman->owner_hash_tab, &owner_item->owner_hash))
188 list_add_tail(&owner_item->sman_list, &sman->owner_items);
192 drm_free(owner_item, sizeof(*owner_item), DRM_MEM_MM);
197 struct drm_memblock_item *drm_sman_alloc(struct drm_sman *sman, unsigned int manager,
198 unsigned long size, unsigned alignment,
202 struct drm_sman_mm *sman_mm;
203 struct drm_owner_item *owner_item;
204 struct drm_memblock_item *memblock;
206 KASSERT(manager < sman->num_managers, ("Invalid manager"));
208 sman_mm = &sman->mm[manager];
209 tmp = sman_mm->allocate(sman_mm->private, size, alignment);
214 memblock = malloc(sizeof(*memblock), DRM_MEM_MM, M_NOWAIT | M_ZERO);
215 DRM_DEBUG("allocated mem_block %p\n", memblock);
219 memblock->mm_info = tmp;
220 memblock->mm = sman_mm;
221 memblock->sman = sman;
222 INIT_LIST_HEAD(&memblock->owner_list);
224 if (drm_ht_just_insert_please
225 (&sman->user_hash_tab, &memblock->user_hash,
226 (unsigned long)memblock, 32, 0, 0))
229 owner_item = drm_sman_get_owner_item(sman, owner);
233 DRM_DEBUG("owner_item = %p, mem_blocks = %p\n", owner_item, &owner_item->mem_blocks);
234 DRM_DEBUG("owner_list.prev = %p, mem_blocks.prev = %p\n", memblock->owner_list.prev, owner_item->mem_blocks.prev);
235 DRM_DEBUG("owner_list.next = %p, mem_blocks.next = %p\n", memblock->owner_list.next, owner_item->mem_blocks.next);
236 list_add_tail(&memblock->owner_list, &owner_item->mem_blocks);
238 DRM_DEBUG("Complete\n");
242 drm_ht_remove_item(&sman->user_hash_tab, &memblock->user_hash);
244 drm_free(memblock, sizeof(*memblock), DRM_MEM_MM);
246 sman_mm->free(sman_mm->private, tmp);
251 static void drm_sman_free(struct drm_memblock_item *item)
253 struct drm_sman *sman = item->sman;
255 list_del(&item->owner_list);
256 drm_ht_remove_item(&sman->user_hash_tab, &item->user_hash);
257 item->mm->free(item->mm->private, item->mm_info);
258 drm_free(item, sizeof(*item), DRM_MEM_MM);
261 int drm_sman_free_key(struct drm_sman *sman, unsigned int key)
263 struct drm_hash_item *hash_item;
264 struct drm_memblock_item *memblock_item;
266 if (drm_ht_find_item(&sman->user_hash_tab, key, &hash_item))
269 memblock_item = drm_hash_entry(hash_item, struct drm_memblock_item,
271 drm_sman_free(memblock_item);
275 static void drm_sman_remove_owner(struct drm_sman *sman,
276 struct drm_owner_item *owner_item)
278 list_del(&owner_item->sman_list);
279 drm_ht_remove_item(&sman->owner_hash_tab, &owner_item->owner_hash);
280 drm_free(owner_item, sizeof(*owner_item), DRM_MEM_MM);
283 int drm_sman_owner_clean(struct drm_sman *sman, unsigned long owner)
286 struct drm_hash_item *hash_item;
287 struct drm_owner_item *owner_item;
289 if (drm_ht_find_item(&sman->owner_hash_tab, owner, &hash_item)) {
293 owner_item = drm_hash_entry(hash_item, struct drm_owner_item, owner_hash);
294 DRM_DEBUG("cleaning owner_item %p\n", owner_item);
295 if (owner_item->mem_blocks.next == &owner_item->mem_blocks) {
296 drm_sman_remove_owner(sman, owner_item);
303 static void drm_sman_do_owner_cleanup(struct drm_sman *sman,
304 struct drm_owner_item *owner_item)
306 struct drm_memblock_item *entry, *next;
308 list_for_each_entry_safe(entry, next, &owner_item->mem_blocks,
310 DRM_DEBUG("freeing mem_block %p\n", entry);
311 drm_sman_free(entry);
313 drm_sman_remove_owner(sman, owner_item);
316 void drm_sman_owner_cleanup(struct drm_sman *sman, unsigned long owner)
319 struct drm_hash_item *hash_item;
320 struct drm_owner_item *owner_item;
322 if (drm_ht_find_item(&sman->owner_hash_tab, owner, &hash_item)) {
327 owner_item = drm_hash_entry(hash_item, struct drm_owner_item, owner_hash);
328 drm_sman_do_owner_cleanup(sman, owner_item);
331 void drm_sman_cleanup(struct drm_sman *sman)
333 struct drm_owner_item *entry, *next;
335 struct drm_sman_mm *sman_mm;
337 DRM_DEBUG("sman = %p, owner_items = %p\n",
338 sman, &sman->owner_items);
339 list_for_each_entry_safe(entry, next, &sman->owner_items, sman_list) {
340 DRM_DEBUG("cleaning owner_item = %p\n", entry);
341 drm_sman_do_owner_cleanup(sman, entry);
344 for (i = 0; i < sman->num_managers; ++i) {
345 sman_mm = &sman->mm[i];
346 if (sman_mm->private) {
347 sman_mm->destroy(sman_mm->private);
348 sman_mm->private = NULL;