Commit | Line | Data |
---|---|---|
ba4e7d97 TH |
1 | /************************************************************************** |
2 | * | |
3 | * Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA | |
4 | * All Rights Reserved. | |
5 | * | |
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: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | **************************************************************************/ | |
27 | /* | |
28 | * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com> | |
29 | */ | |
ca262a99 JG |
30 | /* Notes: |
31 | * | |
32 | * We store bo pointer in drm_mm_node struct so we know which bo own a | |
33 | * specific node. There is no protection on the pointer, thus to make | |
34 | * sure things don't go berserk you have to access this pointer while | |
35 | * holding the global lru lock and make sure anytime you free a node you | |
36 | * reset the pointer to NULL. | |
37 | */ | |
ba4e7d97 TH |
38 | |
39 | #include "ttm/ttm_module.h" | |
40 | #include "ttm/ttm_bo_driver.h" | |
41 | #include "ttm/ttm_placement.h" | |
42 | #include <linux/jiffies.h> | |
43 | #include <linux/slab.h> | |
44 | #include <linux/sched.h> | |
45 | #include <linux/mm.h> | |
46 | #include <linux/file.h> | |
47 | #include <linux/module.h> | |
48 | ||
49 | #define TTM_ASSERT_LOCKED(param) | |
50 | #define TTM_DEBUG(fmt, arg...) | |
51 | #define TTM_BO_HASH_ORDER 13 | |
52 | ||
53 | static int ttm_bo_setup_vm(struct ttm_buffer_object *bo); | |
ba4e7d97 | 54 | static int ttm_bo_swapout(struct ttm_mem_shrink *shrink); |
a987fcaa TH |
55 | static void ttm_bo_global_kobj_release(struct kobject *kobj); |
56 | ||
57 | static struct attribute ttm_bo_count = { | |
58 | .name = "bo_count", | |
59 | .mode = S_IRUGO | |
60 | }; | |
61 | ||
fb53f862 JG |
62 | static inline int ttm_mem_type_from_flags(uint32_t flags, uint32_t *mem_type) |
63 | { | |
64 | int i; | |
65 | ||
66 | for (i = 0; i <= TTM_PL_PRIV5; i++) | |
67 | if (flags & (1 << i)) { | |
68 | *mem_type = i; | |
69 | return 0; | |
70 | } | |
71 | return -EINVAL; | |
72 | } | |
73 | ||
5012f506 | 74 | static void ttm_mem_type_debug(struct ttm_bo_device *bdev, int mem_type) |
fb53f862 | 75 | { |
5012f506 JG |
76 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
77 | ||
fb53f862 JG |
78 | printk(KERN_ERR TTM_PFX " has_type: %d\n", man->has_type); |
79 | printk(KERN_ERR TTM_PFX " use_type: %d\n", man->use_type); | |
80 | printk(KERN_ERR TTM_PFX " flags: 0x%08X\n", man->flags); | |
81 | printk(KERN_ERR TTM_PFX " gpu_offset: 0x%08lX\n", man->gpu_offset); | |
eb6d2c39 | 82 | printk(KERN_ERR TTM_PFX " size: %llu\n", man->size); |
fb53f862 JG |
83 | printk(KERN_ERR TTM_PFX " available_caching: 0x%08X\n", |
84 | man->available_caching); | |
85 | printk(KERN_ERR TTM_PFX " default_caching: 0x%08X\n", | |
86 | man->default_caching); | |
5012f506 JG |
87 | if (mem_type != TTM_PL_SYSTEM) { |
88 | spin_lock(&bdev->glob->lru_lock); | |
89 | drm_mm_debug_table(&man->manager, TTM_PFX); | |
90 | spin_unlock(&bdev->glob->lru_lock); | |
91 | } | |
fb53f862 JG |
92 | } |
93 | ||
94 | static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo, | |
95 | struct ttm_placement *placement) | |
96 | { | |
fb53f862 JG |
97 | int i, ret, mem_type; |
98 | ||
eb6d2c39 | 99 | printk(KERN_ERR TTM_PFX "No space for %p (%lu pages, %luK, %luM)\n", |
fb53f862 JG |
100 | bo, bo->mem.num_pages, bo->mem.size >> 10, |
101 | bo->mem.size >> 20); | |
102 | for (i = 0; i < placement->num_placement; i++) { | |
103 | ret = ttm_mem_type_from_flags(placement->placement[i], | |
104 | &mem_type); | |
105 | if (ret) | |
106 | return; | |
fb53f862 JG |
107 | printk(KERN_ERR TTM_PFX " placement[%d]=0x%08X (%d)\n", |
108 | i, placement->placement[i], mem_type); | |
5012f506 | 109 | ttm_mem_type_debug(bo->bdev, mem_type); |
fb53f862 JG |
110 | } |
111 | } | |
112 | ||
a987fcaa TH |
113 | static ssize_t ttm_bo_global_show(struct kobject *kobj, |
114 | struct attribute *attr, | |
115 | char *buffer) | |
116 | { | |
117 | struct ttm_bo_global *glob = | |
118 | container_of(kobj, struct ttm_bo_global, kobj); | |
119 | ||
120 | return snprintf(buffer, PAGE_SIZE, "%lu\n", | |
121 | (unsigned long) atomic_read(&glob->bo_count)); | |
122 | } | |
123 | ||
124 | static struct attribute *ttm_bo_global_attrs[] = { | |
125 | &ttm_bo_count, | |
126 | NULL | |
127 | }; | |
128 | ||
52cf25d0 | 129 | static const struct sysfs_ops ttm_bo_global_ops = { |
a987fcaa TH |
130 | .show = &ttm_bo_global_show |
131 | }; | |
132 | ||
133 | static struct kobj_type ttm_bo_glob_kobj_type = { | |
134 | .release = &ttm_bo_global_kobj_release, | |
135 | .sysfs_ops = &ttm_bo_global_ops, | |
136 | .default_attrs = ttm_bo_global_attrs | |
137 | }; | |
138 | ||
ba4e7d97 TH |
139 | |
140 | static inline uint32_t ttm_bo_type_flags(unsigned type) | |
141 | { | |
142 | return 1 << (type); | |
143 | } | |
144 | ||
145 | static void ttm_bo_release_list(struct kref *list_kref) | |
146 | { | |
147 | struct ttm_buffer_object *bo = | |
148 | container_of(list_kref, struct ttm_buffer_object, list_kref); | |
149 | struct ttm_bo_device *bdev = bo->bdev; | |
150 | ||
151 | BUG_ON(atomic_read(&bo->list_kref.refcount)); | |
152 | BUG_ON(atomic_read(&bo->kref.refcount)); | |
153 | BUG_ON(atomic_read(&bo->cpu_writers)); | |
154 | BUG_ON(bo->sync_obj != NULL); | |
155 | BUG_ON(bo->mem.mm_node != NULL); | |
156 | BUG_ON(!list_empty(&bo->lru)); | |
157 | BUG_ON(!list_empty(&bo->ddestroy)); | |
158 | ||
159 | if (bo->ttm) | |
160 | ttm_tt_destroy(bo->ttm); | |
a987fcaa | 161 | atomic_dec(&bo->glob->bo_count); |
ba4e7d97 TH |
162 | if (bo->destroy) |
163 | bo->destroy(bo); | |
164 | else { | |
a987fcaa | 165 | ttm_mem_global_free(bdev->glob->mem_glob, bo->acc_size); |
ba4e7d97 TH |
166 | kfree(bo); |
167 | } | |
168 | } | |
169 | ||
170 | int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo, bool interruptible) | |
171 | { | |
172 | ||
173 | if (interruptible) { | |
174 | int ret = 0; | |
175 | ||
176 | ret = wait_event_interruptible(bo->event_queue, | |
177 | atomic_read(&bo->reserved) == 0); | |
178 | if (unlikely(ret != 0)) | |
98ffc415 | 179 | return ret; |
ba4e7d97 TH |
180 | } else { |
181 | wait_event(bo->event_queue, atomic_read(&bo->reserved) == 0); | |
182 | } | |
183 | return 0; | |
184 | } | |
d1ede145 | 185 | EXPORT_SYMBOL(ttm_bo_wait_unreserved); |
ba4e7d97 TH |
186 | |
187 | static void ttm_bo_add_to_lru(struct ttm_buffer_object *bo) | |
188 | { | |
189 | struct ttm_bo_device *bdev = bo->bdev; | |
190 | struct ttm_mem_type_manager *man; | |
191 | ||
192 | BUG_ON(!atomic_read(&bo->reserved)); | |
193 | ||
194 | if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { | |
195 | ||
196 | BUG_ON(!list_empty(&bo->lru)); | |
197 | ||
198 | man = &bdev->man[bo->mem.mem_type]; | |
199 | list_add_tail(&bo->lru, &man->lru); | |
200 | kref_get(&bo->list_kref); | |
201 | ||
202 | if (bo->ttm != NULL) { | |
a987fcaa | 203 | list_add_tail(&bo->swap, &bo->glob->swap_lru); |
ba4e7d97 TH |
204 | kref_get(&bo->list_kref); |
205 | } | |
206 | } | |
207 | } | |
208 | ||
209 | /** | |
210 | * Call with the lru_lock held. | |
211 | */ | |
212 | ||
213 | static int ttm_bo_del_from_lru(struct ttm_buffer_object *bo) | |
214 | { | |
215 | int put_count = 0; | |
216 | ||
217 | if (!list_empty(&bo->swap)) { | |
218 | list_del_init(&bo->swap); | |
219 | ++put_count; | |
220 | } | |
221 | if (!list_empty(&bo->lru)) { | |
222 | list_del_init(&bo->lru); | |
223 | ++put_count; | |
224 | } | |
225 | ||
226 | /* | |
227 | * TODO: Add a driver hook to delete from | |
228 | * driver-specific LRU's here. | |
229 | */ | |
230 | ||
231 | return put_count; | |
232 | } | |
233 | ||
234 | int ttm_bo_reserve_locked(struct ttm_buffer_object *bo, | |
235 | bool interruptible, | |
236 | bool no_wait, bool use_sequence, uint32_t sequence) | |
237 | { | |
a987fcaa | 238 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 TH |
239 | int ret; |
240 | ||
241 | while (unlikely(atomic_cmpxchg(&bo->reserved, 0, 1) != 0)) { | |
242 | if (use_sequence && bo->seq_valid && | |
243 | (sequence - bo->val_seq < (1 << 31))) { | |
244 | return -EAGAIN; | |
245 | } | |
246 | ||
247 | if (no_wait) | |
248 | return -EBUSY; | |
249 | ||
a987fcaa | 250 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 251 | ret = ttm_bo_wait_unreserved(bo, interruptible); |
a987fcaa | 252 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
253 | |
254 | if (unlikely(ret)) | |
255 | return ret; | |
256 | } | |
257 | ||
258 | if (use_sequence) { | |
259 | bo->val_seq = sequence; | |
260 | bo->seq_valid = true; | |
261 | } else { | |
262 | bo->seq_valid = false; | |
263 | } | |
264 | ||
265 | return 0; | |
266 | } | |
267 | EXPORT_SYMBOL(ttm_bo_reserve); | |
268 | ||
269 | static void ttm_bo_ref_bug(struct kref *list_kref) | |
270 | { | |
271 | BUG(); | |
272 | } | |
273 | ||
274 | int ttm_bo_reserve(struct ttm_buffer_object *bo, | |
275 | bool interruptible, | |
276 | bool no_wait, bool use_sequence, uint32_t sequence) | |
277 | { | |
a987fcaa | 278 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 TH |
279 | int put_count = 0; |
280 | int ret; | |
281 | ||
a987fcaa | 282 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
283 | ret = ttm_bo_reserve_locked(bo, interruptible, no_wait, use_sequence, |
284 | sequence); | |
285 | if (likely(ret == 0)) | |
286 | put_count = ttm_bo_del_from_lru(bo); | |
a987fcaa | 287 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
288 | |
289 | while (put_count--) | |
290 | kref_put(&bo->list_kref, ttm_bo_ref_bug); | |
291 | ||
292 | return ret; | |
293 | } | |
294 | ||
295 | void ttm_bo_unreserve(struct ttm_buffer_object *bo) | |
296 | { | |
a987fcaa | 297 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 | 298 | |
a987fcaa | 299 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
300 | ttm_bo_add_to_lru(bo); |
301 | atomic_set(&bo->reserved, 0); | |
302 | wake_up_all(&bo->event_queue); | |
a987fcaa | 303 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
304 | } |
305 | EXPORT_SYMBOL(ttm_bo_unreserve); | |
306 | ||
307 | /* | |
308 | * Call bo->mutex locked. | |
309 | */ | |
ba4e7d97 TH |
310 | static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc) |
311 | { | |
312 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 313 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 TH |
314 | int ret = 0; |
315 | uint32_t page_flags = 0; | |
316 | ||
317 | TTM_ASSERT_LOCKED(&bo->mutex); | |
318 | bo->ttm = NULL; | |
319 | ||
ad49f501 DA |
320 | if (bdev->need_dma32) |
321 | page_flags |= TTM_PAGE_FLAG_DMA32; | |
322 | ||
ba4e7d97 TH |
323 | switch (bo->type) { |
324 | case ttm_bo_type_device: | |
325 | if (zero_alloc) | |
326 | page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC; | |
327 | case ttm_bo_type_kernel: | |
328 | bo->ttm = ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, | |
a987fcaa | 329 | page_flags, glob->dummy_read_page); |
ba4e7d97 TH |
330 | if (unlikely(bo->ttm == NULL)) |
331 | ret = -ENOMEM; | |
332 | break; | |
333 | case ttm_bo_type_user: | |
334 | bo->ttm = ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, | |
335 | page_flags | TTM_PAGE_FLAG_USER, | |
a987fcaa | 336 | glob->dummy_read_page); |
447aeb90 | 337 | if (unlikely(bo->ttm == NULL)) { |
ba4e7d97 | 338 | ret = -ENOMEM; |
447aeb90 DA |
339 | break; |
340 | } | |
ba4e7d97 TH |
341 | |
342 | ret = ttm_tt_set_user(bo->ttm, current, | |
343 | bo->buffer_start, bo->num_pages); | |
344 | if (unlikely(ret != 0)) | |
345 | ttm_tt_destroy(bo->ttm); | |
346 | break; | |
347 | default: | |
348 | printk(KERN_ERR TTM_PFX "Illegal buffer object type\n"); | |
349 | ret = -EINVAL; | |
350 | break; | |
351 | } | |
352 | ||
353 | return ret; | |
354 | } | |
355 | ||
356 | static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo, | |
357 | struct ttm_mem_reg *mem, | |
9d87fa21 JG |
358 | bool evict, bool interruptible, |
359 | bool no_wait_reserve, bool no_wait_gpu) | |
ba4e7d97 TH |
360 | { |
361 | struct ttm_bo_device *bdev = bo->bdev; | |
362 | bool old_is_pci = ttm_mem_reg_is_pci(bdev, &bo->mem); | |
363 | bool new_is_pci = ttm_mem_reg_is_pci(bdev, mem); | |
364 | struct ttm_mem_type_manager *old_man = &bdev->man[bo->mem.mem_type]; | |
365 | struct ttm_mem_type_manager *new_man = &bdev->man[mem->mem_type]; | |
366 | int ret = 0; | |
367 | ||
368 | if (old_is_pci || new_is_pci || | |
369 | ((mem->placement & bo->mem.placement & TTM_PL_MASK_CACHING) == 0)) | |
370 | ttm_bo_unmap_virtual(bo); | |
371 | ||
372 | /* | |
373 | * Create and bind a ttm if required. | |
374 | */ | |
375 | ||
376 | if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && (bo->ttm == NULL)) { | |
377 | ret = ttm_bo_add_ttm(bo, false); | |
378 | if (ret) | |
379 | goto out_err; | |
380 | ||
381 | ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement); | |
382 | if (ret) | |
87ef9209 | 383 | goto out_err; |
ba4e7d97 TH |
384 | |
385 | if (mem->mem_type != TTM_PL_SYSTEM) { | |
386 | ret = ttm_tt_bind(bo->ttm, mem); | |
387 | if (ret) | |
388 | goto out_err; | |
389 | } | |
390 | ||
391 | if (bo->mem.mem_type == TTM_PL_SYSTEM) { | |
ca262a99 | 392 | bo->mem = *mem; |
ba4e7d97 | 393 | mem->mm_node = NULL; |
ba4e7d97 TH |
394 | goto moved; |
395 | } | |
396 | ||
397 | } | |
398 | ||
e024e110 DA |
399 | if (bdev->driver->move_notify) |
400 | bdev->driver->move_notify(bo, mem); | |
401 | ||
ba4e7d97 TH |
402 | if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
403 | !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) | |
9d87fa21 | 404 | ret = ttm_bo_move_ttm(bo, evict, no_wait_reserve, no_wait_gpu, mem); |
ba4e7d97 TH |
405 | else if (bdev->driver->move) |
406 | ret = bdev->driver->move(bo, evict, interruptible, | |
9d87fa21 | 407 | no_wait_reserve, no_wait_gpu, mem); |
ba4e7d97 | 408 | else |
9d87fa21 | 409 | ret = ttm_bo_move_memcpy(bo, evict, no_wait_reserve, no_wait_gpu, mem); |
ba4e7d97 TH |
410 | |
411 | if (ret) | |
412 | goto out_err; | |
413 | ||
414 | moved: | |
415 | if (bo->evicted) { | |
416 | ret = bdev->driver->invalidate_caches(bdev, bo->mem.placement); | |
417 | if (ret) | |
418 | printk(KERN_ERR TTM_PFX "Can not flush read caches\n"); | |
419 | bo->evicted = false; | |
420 | } | |
421 | ||
422 | if (bo->mem.mm_node) { | |
423 | spin_lock(&bo->lock); | |
424 | bo->offset = (bo->mem.mm_node->start << PAGE_SHIFT) + | |
425 | bdev->man[bo->mem.mem_type].gpu_offset; | |
426 | bo->cur_placement = bo->mem.placement; | |
427 | spin_unlock(&bo->lock); | |
354fb52c TH |
428 | } else |
429 | bo->offset = 0; | |
ba4e7d97 TH |
430 | |
431 | return 0; | |
432 | ||
433 | out_err: | |
434 | new_man = &bdev->man[bo->mem.mem_type]; | |
435 | if ((new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && bo->ttm) { | |
436 | ttm_tt_unbind(bo->ttm); | |
437 | ttm_tt_destroy(bo->ttm); | |
438 | bo->ttm = NULL; | |
439 | } | |
440 | ||
441 | return ret; | |
442 | } | |
443 | ||
444 | /** | |
445 | * If bo idle, remove from delayed- and lru lists, and unref. | |
446 | * If not idle, and already on delayed list, do nothing. | |
447 | * If not idle, and not on delayed list, put on delayed list, | |
448 | * up the list_kref and schedule a delayed list check. | |
449 | */ | |
450 | ||
451 | static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all) | |
452 | { | |
453 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 454 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 TH |
455 | struct ttm_bo_driver *driver = bdev->driver; |
456 | int ret; | |
457 | ||
458 | spin_lock(&bo->lock); | |
459 | (void) ttm_bo_wait(bo, false, false, !remove_all); | |
460 | ||
461 | if (!bo->sync_obj) { | |
462 | int put_count; | |
463 | ||
464 | spin_unlock(&bo->lock); | |
465 | ||
a987fcaa | 466 | spin_lock(&glob->lru_lock); |
aaa20736 TH |
467 | put_count = ttm_bo_del_from_lru(bo); |
468 | ||
ba4e7d97 TH |
469 | ret = ttm_bo_reserve_locked(bo, false, false, false, 0); |
470 | BUG_ON(ret); | |
471 | if (bo->ttm) | |
472 | ttm_tt_unbind(bo->ttm); | |
473 | ||
474 | if (!list_empty(&bo->ddestroy)) { | |
475 | list_del_init(&bo->ddestroy); | |
aaa20736 | 476 | ++put_count; |
ba4e7d97 TH |
477 | } |
478 | if (bo->mem.mm_node) { | |
479 | drm_mm_put_block(bo->mem.mm_node); | |
480 | bo->mem.mm_node = NULL; | |
481 | } | |
a987fcaa | 482 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
483 | |
484 | atomic_set(&bo->reserved, 0); | |
485 | ||
486 | while (put_count--) | |
aaa20736 | 487 | kref_put(&bo->list_kref, ttm_bo_ref_bug); |
ba4e7d97 TH |
488 | |
489 | return 0; | |
490 | } | |
491 | ||
a987fcaa | 492 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
493 | if (list_empty(&bo->ddestroy)) { |
494 | void *sync_obj = bo->sync_obj; | |
495 | void *sync_obj_arg = bo->sync_obj_arg; | |
496 | ||
497 | kref_get(&bo->list_kref); | |
498 | list_add_tail(&bo->ddestroy, &bdev->ddestroy); | |
a987fcaa | 499 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
500 | spin_unlock(&bo->lock); |
501 | ||
502 | if (sync_obj) | |
503 | driver->sync_obj_flush(sync_obj, sync_obj_arg); | |
504 | schedule_delayed_work(&bdev->wq, | |
505 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
506 | ret = 0; | |
507 | ||
508 | } else { | |
a987fcaa | 509 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
510 | spin_unlock(&bo->lock); |
511 | ret = -EBUSY; | |
512 | } | |
513 | ||
514 | return ret; | |
515 | } | |
516 | ||
517 | /** | |
518 | * Traverse the delayed list, and call ttm_bo_cleanup_refs on all | |
519 | * encountered buffers. | |
520 | */ | |
521 | ||
522 | static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) | |
523 | { | |
a987fcaa | 524 | struct ttm_bo_global *glob = bdev->glob; |
1a961ce0 LB |
525 | struct ttm_buffer_object *entry = NULL; |
526 | int ret = 0; | |
ba4e7d97 | 527 | |
a987fcaa | 528 | spin_lock(&glob->lru_lock); |
1a961ce0 LB |
529 | if (list_empty(&bdev->ddestroy)) |
530 | goto out_unlock; | |
531 | ||
532 | entry = list_first_entry(&bdev->ddestroy, | |
533 | struct ttm_buffer_object, ddestroy); | |
534 | kref_get(&entry->list_kref); | |
535 | ||
536 | for (;;) { | |
537 | struct ttm_buffer_object *nentry = NULL; | |
538 | ||
539 | if (entry->ddestroy.next != &bdev->ddestroy) { | |
540 | nentry = list_first_entry(&entry->ddestroy, | |
541 | struct ttm_buffer_object, ddestroy); | |
ba4e7d97 TH |
542 | kref_get(&nentry->list_kref); |
543 | } | |
ba4e7d97 | 544 | |
a987fcaa | 545 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
546 | ret = ttm_bo_cleanup_refs(entry, remove_all); |
547 | kref_put(&entry->list_kref, ttm_bo_release_list); | |
1a961ce0 LB |
548 | entry = nentry; |
549 | ||
550 | if (ret || !entry) | |
551 | goto out; | |
ba4e7d97 | 552 | |
a987fcaa | 553 | spin_lock(&glob->lru_lock); |
1a961ce0 | 554 | if (list_empty(&entry->ddestroy)) |
ba4e7d97 TH |
555 | break; |
556 | } | |
ba4e7d97 | 557 | |
1a961ce0 LB |
558 | out_unlock: |
559 | spin_unlock(&glob->lru_lock); | |
560 | out: | |
561 | if (entry) | |
562 | kref_put(&entry->list_kref, ttm_bo_release_list); | |
ba4e7d97 TH |
563 | return ret; |
564 | } | |
565 | ||
566 | static void ttm_bo_delayed_workqueue(struct work_struct *work) | |
567 | { | |
568 | struct ttm_bo_device *bdev = | |
569 | container_of(work, struct ttm_bo_device, wq.work); | |
570 | ||
571 | if (ttm_bo_delayed_delete(bdev, false)) { | |
572 | schedule_delayed_work(&bdev->wq, | |
573 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
574 | } | |
575 | } | |
576 | ||
577 | static void ttm_bo_release(struct kref *kref) | |
578 | { | |
579 | struct ttm_buffer_object *bo = | |
580 | container_of(kref, struct ttm_buffer_object, kref); | |
581 | struct ttm_bo_device *bdev = bo->bdev; | |
582 | ||
583 | if (likely(bo->vm_node != NULL)) { | |
584 | rb_erase(&bo->vm_rb, &bdev->addr_space_rb); | |
585 | drm_mm_put_block(bo->vm_node); | |
586 | bo->vm_node = NULL; | |
587 | } | |
588 | write_unlock(&bdev->vm_lock); | |
589 | ttm_bo_cleanup_refs(bo, false); | |
590 | kref_put(&bo->list_kref, ttm_bo_release_list); | |
591 | write_lock(&bdev->vm_lock); | |
592 | } | |
593 | ||
594 | void ttm_bo_unref(struct ttm_buffer_object **p_bo) | |
595 | { | |
596 | struct ttm_buffer_object *bo = *p_bo; | |
597 | struct ttm_bo_device *bdev = bo->bdev; | |
598 | ||
599 | *p_bo = NULL; | |
600 | write_lock(&bdev->vm_lock); | |
601 | kref_put(&bo->kref, ttm_bo_release); | |
602 | write_unlock(&bdev->vm_lock); | |
603 | } | |
604 | EXPORT_SYMBOL(ttm_bo_unref); | |
605 | ||
7c5ee536 MG |
606 | int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev) |
607 | { | |
608 | return cancel_delayed_work_sync(&bdev->wq); | |
609 | } | |
610 | EXPORT_SYMBOL(ttm_bo_lock_delayed_workqueue); | |
611 | ||
612 | void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched) | |
613 | { | |
614 | if (resched) | |
615 | schedule_delayed_work(&bdev->wq, | |
616 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
617 | } | |
618 | EXPORT_SYMBOL(ttm_bo_unlock_delayed_workqueue); | |
619 | ||
ca262a99 | 620 | static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible, |
9d87fa21 | 621 | bool no_wait_reserve, bool no_wait_gpu) |
ba4e7d97 | 622 | { |
ba4e7d97 | 623 | struct ttm_bo_device *bdev = bo->bdev; |
a987fcaa | 624 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 | 625 | struct ttm_mem_reg evict_mem; |
ca262a99 JG |
626 | struct ttm_placement placement; |
627 | int ret = 0; | |
ba4e7d97 TH |
628 | |
629 | spin_lock(&bo->lock); | |
9d87fa21 | 630 | ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); |
ba4e7d97 TH |
631 | spin_unlock(&bo->lock); |
632 | ||
78ecf091 | 633 | if (unlikely(ret != 0)) { |
98ffc415 | 634 | if (ret != -ERESTARTSYS) { |
78ecf091 TH |
635 | printk(KERN_ERR TTM_PFX |
636 | "Failed to expire sync object before " | |
637 | "buffer eviction.\n"); | |
638 | } | |
ba4e7d97 TH |
639 | goto out; |
640 | } | |
641 | ||
642 | BUG_ON(!atomic_read(&bo->reserved)); | |
643 | ||
644 | evict_mem = bo->mem; | |
645 | evict_mem.mm_node = NULL; | |
82c5da6b | 646 | evict_mem.bus.io_reserved = false; |
ba4e7d97 | 647 | |
7cb7d1d7 JG |
648 | placement.fpfn = 0; |
649 | placement.lpfn = 0; | |
650 | placement.num_placement = 0; | |
651 | placement.num_busy_placement = 0; | |
ca262a99 JG |
652 | bdev->driver->evict_flags(bo, &placement); |
653 | ret = ttm_bo_mem_space(bo, &placement, &evict_mem, interruptible, | |
9d87fa21 | 654 | no_wait_reserve, no_wait_gpu); |
ba4e7d97 | 655 | if (ret) { |
fb53f862 | 656 | if (ret != -ERESTARTSYS) { |
ba4e7d97 TH |
657 | printk(KERN_ERR TTM_PFX |
658 | "Failed to find memory space for " | |
659 | "buffer 0x%p eviction.\n", bo); | |
fb53f862 JG |
660 | ttm_bo_mem_space_debug(bo, &placement); |
661 | } | |
ba4e7d97 TH |
662 | goto out; |
663 | } | |
664 | ||
665 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, interruptible, | |
9d87fa21 | 666 | no_wait_reserve, no_wait_gpu); |
ba4e7d97 | 667 | if (ret) { |
98ffc415 | 668 | if (ret != -ERESTARTSYS) |
ba4e7d97 | 669 | printk(KERN_ERR TTM_PFX "Buffer eviction failed\n"); |
ca262a99 JG |
670 | spin_lock(&glob->lru_lock); |
671 | if (evict_mem.mm_node) { | |
ca262a99 JG |
672 | drm_mm_put_block(evict_mem.mm_node); |
673 | evict_mem.mm_node = NULL; | |
674 | } | |
675 | spin_unlock(&glob->lru_lock); | |
ba4e7d97 TH |
676 | goto out; |
677 | } | |
ca262a99 JG |
678 | bo->evicted = true; |
679 | out: | |
680 | return ret; | |
681 | } | |
682 | ||
683 | static int ttm_mem_evict_first(struct ttm_bo_device *bdev, | |
684 | uint32_t mem_type, | |
9d87fa21 JG |
685 | bool interruptible, bool no_wait_reserve, |
686 | bool no_wait_gpu) | |
ca262a99 JG |
687 | { |
688 | struct ttm_bo_global *glob = bdev->glob; | |
689 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
690 | struct ttm_buffer_object *bo; | |
691 | int ret, put_count = 0; | |
ba4e7d97 | 692 | |
9c51ba1d | 693 | retry: |
a987fcaa | 694 | spin_lock(&glob->lru_lock); |
9c51ba1d TH |
695 | if (list_empty(&man->lru)) { |
696 | spin_unlock(&glob->lru_lock); | |
697 | return -EBUSY; | |
698 | } | |
699 | ||
ca262a99 JG |
700 | bo = list_first_entry(&man->lru, struct ttm_buffer_object, lru); |
701 | kref_get(&bo->list_kref); | |
9c51ba1d | 702 | |
9d87fa21 | 703 | ret = ttm_bo_reserve_locked(bo, false, no_wait_reserve, false, 0); |
9c51ba1d TH |
704 | |
705 | if (unlikely(ret == -EBUSY)) { | |
706 | spin_unlock(&glob->lru_lock); | |
9d87fa21 | 707 | if (likely(!no_wait_gpu)) |
9c51ba1d TH |
708 | ret = ttm_bo_wait_unreserved(bo, interruptible); |
709 | ||
710 | kref_put(&bo->list_kref, ttm_bo_release_list); | |
711 | ||
712 | /** | |
713 | * We *need* to retry after releasing the lru lock. | |
714 | */ | |
715 | ||
716 | if (unlikely(ret != 0)) | |
717 | return ret; | |
718 | goto retry; | |
719 | } | |
720 | ||
721 | put_count = ttm_bo_del_from_lru(bo); | |
a987fcaa | 722 | spin_unlock(&glob->lru_lock); |
9c51ba1d TH |
723 | |
724 | BUG_ON(ret != 0); | |
725 | ||
ca262a99 JG |
726 | while (put_count--) |
727 | kref_put(&bo->list_kref, ttm_bo_ref_bug); | |
9c51ba1d | 728 | |
9d87fa21 | 729 | ret = ttm_bo_evict(bo, interruptible, no_wait_reserve, no_wait_gpu); |
ca262a99 | 730 | ttm_bo_unreserve(bo); |
9c51ba1d | 731 | |
ca262a99 | 732 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
733 | return ret; |
734 | } | |
735 | ||
ca262a99 JG |
736 | static int ttm_bo_man_get_node(struct ttm_buffer_object *bo, |
737 | struct ttm_mem_type_manager *man, | |
738 | struct ttm_placement *placement, | |
739 | struct ttm_mem_reg *mem, | |
740 | struct drm_mm_node **node) | |
741 | { | |
742 | struct ttm_bo_global *glob = bo->glob; | |
743 | unsigned long lpfn; | |
744 | int ret; | |
745 | ||
746 | lpfn = placement->lpfn; | |
747 | if (!lpfn) | |
748 | lpfn = man->size; | |
749 | *node = NULL; | |
750 | do { | |
751 | ret = drm_mm_pre_get(&man->manager); | |
752 | if (unlikely(ret)) | |
753 | return ret; | |
754 | ||
755 | spin_lock(&glob->lru_lock); | |
756 | *node = drm_mm_search_free_in_range(&man->manager, | |
757 | mem->num_pages, mem->page_alignment, | |
758 | placement->fpfn, lpfn, 1); | |
759 | if (unlikely(*node == NULL)) { | |
760 | spin_unlock(&glob->lru_lock); | |
761 | return 0; | |
762 | } | |
763 | *node = drm_mm_get_block_atomic_range(*node, mem->num_pages, | |
764 | mem->page_alignment, | |
765 | placement->fpfn, | |
766 | lpfn); | |
767 | spin_unlock(&glob->lru_lock); | |
768 | } while (*node == NULL); | |
769 | return 0; | |
770 | } | |
771 | ||
ba4e7d97 TH |
772 | /** |
773 | * Repeatedly evict memory from the LRU for @mem_type until we create enough | |
774 | * space, or we've evicted everything and there isn't enough space. | |
775 | */ | |
ca262a99 JG |
776 | static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, |
777 | uint32_t mem_type, | |
778 | struct ttm_placement *placement, | |
779 | struct ttm_mem_reg *mem, | |
9d87fa21 JG |
780 | bool interruptible, |
781 | bool no_wait_reserve, | |
782 | bool no_wait_gpu) | |
ba4e7d97 | 783 | { |
ca262a99 | 784 | struct ttm_bo_device *bdev = bo->bdev; |
a987fcaa | 785 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 | 786 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
ca262a99 | 787 | struct drm_mm_node *node; |
ba4e7d97 TH |
788 | int ret; |
789 | ||
ba4e7d97 | 790 | do { |
ca262a99 JG |
791 | ret = ttm_bo_man_get_node(bo, man, placement, mem, &node); |
792 | if (unlikely(ret != 0)) | |
793 | return ret; | |
ba4e7d97 TH |
794 | if (node) |
795 | break; | |
ca262a99 JG |
796 | spin_lock(&glob->lru_lock); |
797 | if (list_empty(&man->lru)) { | |
798 | spin_unlock(&glob->lru_lock); | |
ba4e7d97 | 799 | break; |
ca262a99 | 800 | } |
a987fcaa | 801 | spin_unlock(&glob->lru_lock); |
ca262a99 | 802 | ret = ttm_mem_evict_first(bdev, mem_type, interruptible, |
9d87fa21 | 803 | no_wait_reserve, no_wait_gpu); |
ba4e7d97 TH |
804 | if (unlikely(ret != 0)) |
805 | return ret; | |
ba4e7d97 | 806 | } while (1); |
ca262a99 | 807 | if (node == NULL) |
ba4e7d97 | 808 | return -ENOMEM; |
ba4e7d97 TH |
809 | mem->mm_node = node; |
810 | mem->mem_type = mem_type; | |
811 | return 0; | |
812 | } | |
813 | ||
ae3e8122 TH |
814 | static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man, |
815 | uint32_t cur_placement, | |
816 | uint32_t proposed_placement) | |
817 | { | |
818 | uint32_t caching = proposed_placement & TTM_PL_MASK_CACHING; | |
819 | uint32_t result = proposed_placement & ~TTM_PL_MASK_CACHING; | |
820 | ||
821 | /** | |
822 | * Keep current caching if possible. | |
823 | */ | |
824 | ||
825 | if ((cur_placement & caching) != 0) | |
826 | result |= (cur_placement & caching); | |
827 | else if ((man->default_caching & caching) != 0) | |
828 | result |= man->default_caching; | |
829 | else if ((TTM_PL_FLAG_CACHED & caching) != 0) | |
830 | result |= TTM_PL_FLAG_CACHED; | |
831 | else if ((TTM_PL_FLAG_WC & caching) != 0) | |
832 | result |= TTM_PL_FLAG_WC; | |
833 | else if ((TTM_PL_FLAG_UNCACHED & caching) != 0) | |
834 | result |= TTM_PL_FLAG_UNCACHED; | |
835 | ||
836 | return result; | |
837 | } | |
838 | ||
ba4e7d97 TH |
839 | static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man, |
840 | bool disallow_fixed, | |
841 | uint32_t mem_type, | |
ae3e8122 TH |
842 | uint32_t proposed_placement, |
843 | uint32_t *masked_placement) | |
ba4e7d97 TH |
844 | { |
845 | uint32_t cur_flags = ttm_bo_type_flags(mem_type); | |
846 | ||
847 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && disallow_fixed) | |
848 | return false; | |
849 | ||
ae3e8122 | 850 | if ((cur_flags & proposed_placement & TTM_PL_MASK_MEM) == 0) |
ba4e7d97 TH |
851 | return false; |
852 | ||
ae3e8122 | 853 | if ((proposed_placement & man->available_caching) == 0) |
ba4e7d97 | 854 | return false; |
ba4e7d97 | 855 | |
ae3e8122 TH |
856 | cur_flags |= (proposed_placement & man->available_caching); |
857 | ||
858 | *masked_placement = cur_flags; | |
ba4e7d97 TH |
859 | return true; |
860 | } | |
861 | ||
862 | /** | |
863 | * Creates space for memory region @mem according to its type. | |
864 | * | |
865 | * This function first searches for free space in compatible memory types in | |
866 | * the priority order defined by the driver. If free space isn't found, then | |
867 | * ttm_bo_mem_force_space is attempted in priority order to evict and find | |
868 | * space. | |
869 | */ | |
870 | int ttm_bo_mem_space(struct ttm_buffer_object *bo, | |
ca262a99 JG |
871 | struct ttm_placement *placement, |
872 | struct ttm_mem_reg *mem, | |
9d87fa21 JG |
873 | bool interruptible, bool no_wait_reserve, |
874 | bool no_wait_gpu) | |
ba4e7d97 TH |
875 | { |
876 | struct ttm_bo_device *bdev = bo->bdev; | |
877 | struct ttm_mem_type_manager *man; | |
ba4e7d97 TH |
878 | uint32_t mem_type = TTM_PL_SYSTEM; |
879 | uint32_t cur_flags = 0; | |
880 | bool type_found = false; | |
881 | bool type_ok = false; | |
98ffc415 | 882 | bool has_erestartsys = false; |
ba4e7d97 | 883 | struct drm_mm_node *node = NULL; |
ca262a99 | 884 | int i, ret; |
ba4e7d97 TH |
885 | |
886 | mem->mm_node = NULL; | |
b6637526 | 887 | for (i = 0; i < placement->num_placement; ++i) { |
ca262a99 JG |
888 | ret = ttm_mem_type_from_flags(placement->placement[i], |
889 | &mem_type); | |
890 | if (ret) | |
891 | return ret; | |
ba4e7d97 TH |
892 | man = &bdev->man[mem_type]; |
893 | ||
894 | type_ok = ttm_bo_mt_compatible(man, | |
ca262a99 JG |
895 | bo->type == ttm_bo_type_user, |
896 | mem_type, | |
897 | placement->placement[i], | |
898 | &cur_flags); | |
ba4e7d97 TH |
899 | |
900 | if (!type_ok) | |
901 | continue; | |
902 | ||
ae3e8122 TH |
903 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
904 | cur_flags); | |
ca262a99 JG |
905 | /* |
906 | * Use the access and other non-mapping-related flag bits from | |
907 | * the memory placement flags to the current flags | |
908 | */ | |
909 | ttm_flag_masked(&cur_flags, placement->placement[i], | |
910 | ~TTM_PL_MASK_MEMTYPE); | |
ae3e8122 | 911 | |
ba4e7d97 TH |
912 | if (mem_type == TTM_PL_SYSTEM) |
913 | break; | |
914 | ||
915 | if (man->has_type && man->use_type) { | |
916 | type_found = true; | |
ca262a99 JG |
917 | ret = ttm_bo_man_get_node(bo, man, placement, mem, |
918 | &node); | |
919 | if (unlikely(ret)) | |
920 | return ret; | |
ba4e7d97 TH |
921 | } |
922 | if (node) | |
923 | break; | |
924 | } | |
925 | ||
926 | if ((type_ok && (mem_type == TTM_PL_SYSTEM)) || node) { | |
927 | mem->mm_node = node; | |
928 | mem->mem_type = mem_type; | |
929 | mem->placement = cur_flags; | |
930 | return 0; | |
931 | } | |
932 | ||
933 | if (!type_found) | |
934 | return -EINVAL; | |
935 | ||
b6637526 DA |
936 | for (i = 0; i < placement->num_busy_placement; ++i) { |
937 | ret = ttm_mem_type_from_flags(placement->busy_placement[i], | |
ca262a99 JG |
938 | &mem_type); |
939 | if (ret) | |
940 | return ret; | |
ba4e7d97 | 941 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
942 | if (!man->has_type) |
943 | continue; | |
ba4e7d97 | 944 | if (!ttm_bo_mt_compatible(man, |
ca262a99 JG |
945 | bo->type == ttm_bo_type_user, |
946 | mem_type, | |
b6637526 | 947 | placement->busy_placement[i], |
ca262a99 | 948 | &cur_flags)) |
ba4e7d97 TH |
949 | continue; |
950 | ||
ae3e8122 TH |
951 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
952 | cur_flags); | |
ca262a99 JG |
953 | /* |
954 | * Use the access and other non-mapping-related flag bits from | |
955 | * the memory placement flags to the current flags | |
956 | */ | |
b6637526 | 957 | ttm_flag_masked(&cur_flags, placement->busy_placement[i], |
ca262a99 | 958 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 959 | |
0eaddb28 TH |
960 | |
961 | if (mem_type == TTM_PL_SYSTEM) { | |
962 | mem->mem_type = mem_type; | |
963 | mem->placement = cur_flags; | |
964 | mem->mm_node = NULL; | |
965 | return 0; | |
966 | } | |
967 | ||
ca262a99 | 968 | ret = ttm_bo_mem_force_space(bo, mem_type, placement, mem, |
9d87fa21 | 969 | interruptible, no_wait_reserve, no_wait_gpu); |
ba4e7d97 TH |
970 | if (ret == 0 && mem->mm_node) { |
971 | mem->placement = cur_flags; | |
972 | return 0; | |
973 | } | |
98ffc415 TH |
974 | if (ret == -ERESTARTSYS) |
975 | has_erestartsys = true; | |
ba4e7d97 | 976 | } |
98ffc415 | 977 | ret = (has_erestartsys) ? -ERESTARTSYS : -ENOMEM; |
ba4e7d97 TH |
978 | return ret; |
979 | } | |
980 | EXPORT_SYMBOL(ttm_bo_mem_space); | |
981 | ||
982 | int ttm_bo_wait_cpu(struct ttm_buffer_object *bo, bool no_wait) | |
983 | { | |
ba4e7d97 TH |
984 | if ((atomic_read(&bo->cpu_writers) > 0) && no_wait) |
985 | return -EBUSY; | |
986 | ||
98ffc415 TH |
987 | return wait_event_interruptible(bo->event_queue, |
988 | atomic_read(&bo->cpu_writers) == 0); | |
ba4e7d97 | 989 | } |
d1ede145 | 990 | EXPORT_SYMBOL(ttm_bo_wait_cpu); |
ba4e7d97 TH |
991 | |
992 | int ttm_bo_move_buffer(struct ttm_buffer_object *bo, | |
ca262a99 | 993 | struct ttm_placement *placement, |
9d87fa21 JG |
994 | bool interruptible, bool no_wait_reserve, |
995 | bool no_wait_gpu) | |
ba4e7d97 | 996 | { |
a987fcaa | 997 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 TH |
998 | int ret = 0; |
999 | struct ttm_mem_reg mem; | |
1000 | ||
1001 | BUG_ON(!atomic_read(&bo->reserved)); | |
1002 | ||
1003 | /* | |
1004 | * FIXME: It's possible to pipeline buffer moves. | |
1005 | * Have the driver move function wait for idle when necessary, | |
1006 | * instead of doing it here. | |
1007 | */ | |
ba4e7d97 | 1008 | spin_lock(&bo->lock); |
9d87fa21 | 1009 | ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); |
ba4e7d97 | 1010 | spin_unlock(&bo->lock); |
ba4e7d97 TH |
1011 | if (ret) |
1012 | return ret; | |
ba4e7d97 TH |
1013 | mem.num_pages = bo->num_pages; |
1014 | mem.size = mem.num_pages << PAGE_SHIFT; | |
1015 | mem.page_alignment = bo->mem.page_alignment; | |
82c5da6b | 1016 | mem.bus.io_reserved = false; |
ba4e7d97 TH |
1017 | /* |
1018 | * Determine where to move the buffer. | |
1019 | */ | |
9d87fa21 | 1020 | ret = ttm_bo_mem_space(bo, placement, &mem, interruptible, no_wait_reserve, no_wait_gpu); |
ba4e7d97 TH |
1021 | if (ret) |
1022 | goto out_unlock; | |
9d87fa21 | 1023 | ret = ttm_bo_handle_move_mem(bo, &mem, false, interruptible, no_wait_reserve, no_wait_gpu); |
ba4e7d97 TH |
1024 | out_unlock: |
1025 | if (ret && mem.mm_node) { | |
a987fcaa | 1026 | spin_lock(&glob->lru_lock); |
ba4e7d97 | 1027 | drm_mm_put_block(mem.mm_node); |
a987fcaa | 1028 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
1029 | } |
1030 | return ret; | |
1031 | } | |
1032 | ||
ca262a99 | 1033 | static int ttm_bo_mem_compat(struct ttm_placement *placement, |
ba4e7d97 TH |
1034 | struct ttm_mem_reg *mem) |
1035 | { | |
ca262a99 | 1036 | int i; |
e22238ea TH |
1037 | struct drm_mm_node *node = mem->mm_node; |
1038 | ||
1039 | if (node && placement->lpfn != 0 && | |
1040 | (node->start < placement->fpfn || | |
1041 | node->start + node->size > placement->lpfn)) | |
1042 | return -1; | |
ca262a99 JG |
1043 | |
1044 | for (i = 0; i < placement->num_placement; i++) { | |
1045 | if ((placement->placement[i] & mem->placement & | |
1046 | TTM_PL_MASK_CACHING) && | |
1047 | (placement->placement[i] & mem->placement & | |
1048 | TTM_PL_MASK_MEM)) | |
1049 | return i; | |
1050 | } | |
1051 | return -1; | |
ba4e7d97 TH |
1052 | } |
1053 | ||
09855acb JG |
1054 | int ttm_bo_validate(struct ttm_buffer_object *bo, |
1055 | struct ttm_placement *placement, | |
9d87fa21 JG |
1056 | bool interruptible, bool no_wait_reserve, |
1057 | bool no_wait_gpu) | |
ba4e7d97 TH |
1058 | { |
1059 | int ret; | |
1060 | ||
1061 | BUG_ON(!atomic_read(&bo->reserved)); | |
ca262a99 JG |
1062 | /* Check that range is valid */ |
1063 | if (placement->lpfn || placement->fpfn) | |
1064 | if (placement->fpfn > placement->lpfn || | |
1065 | (placement->lpfn - placement->fpfn) < bo->num_pages) | |
1066 | return -EINVAL; | |
ba4e7d97 TH |
1067 | /* |
1068 | * Check whether we need to move buffer. | |
1069 | */ | |
ca262a99 JG |
1070 | ret = ttm_bo_mem_compat(placement, &bo->mem); |
1071 | if (ret < 0) { | |
9d87fa21 | 1072 | ret = ttm_bo_move_buffer(bo, placement, interruptible, no_wait_reserve, no_wait_gpu); |
ca262a99 | 1073 | if (ret) |
ba4e7d97 | 1074 | return ret; |
ca262a99 JG |
1075 | } else { |
1076 | /* | |
1077 | * Use the access and other non-mapping-related flag bits from | |
1078 | * the compatible memory placement flags to the active flags | |
1079 | */ | |
1080 | ttm_flag_masked(&bo->mem.placement, placement->placement[ret], | |
1081 | ~TTM_PL_MASK_MEMTYPE); | |
ba4e7d97 | 1082 | } |
ba4e7d97 TH |
1083 | /* |
1084 | * We might need to add a TTM. | |
1085 | */ | |
ba4e7d97 TH |
1086 | if (bo->mem.mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { |
1087 | ret = ttm_bo_add_ttm(bo, true); | |
1088 | if (ret) | |
1089 | return ret; | |
1090 | } | |
ba4e7d97 TH |
1091 | return 0; |
1092 | } | |
09855acb | 1093 | EXPORT_SYMBOL(ttm_bo_validate); |
ba4e7d97 | 1094 | |
09855acb JG |
1095 | int ttm_bo_check_placement(struct ttm_buffer_object *bo, |
1096 | struct ttm_placement *placement) | |
ba4e7d97 | 1097 | { |
09855acb | 1098 | int i; |
ba4e7d97 | 1099 | |
09855acb JG |
1100 | if (placement->fpfn || placement->lpfn) { |
1101 | if (bo->mem.num_pages > (placement->lpfn - placement->fpfn)) { | |
1102 | printk(KERN_ERR TTM_PFX "Page number range to small " | |
1103 | "Need %lu pages, range is [%u, %u]\n", | |
1104 | bo->mem.num_pages, placement->fpfn, | |
1105 | placement->lpfn); | |
ba4e7d97 TH |
1106 | return -EINVAL; |
1107 | } | |
09855acb JG |
1108 | } |
1109 | for (i = 0; i < placement->num_placement; i++) { | |
1110 | if (!capable(CAP_SYS_ADMIN)) { | |
1111 | if (placement->placement[i] & TTM_PL_FLAG_NO_EVICT) { | |
1112 | printk(KERN_ERR TTM_PFX "Need to be root to " | |
1113 | "modify NO_EVICT status.\n"); | |
1114 | return -EINVAL; | |
1115 | } | |
1116 | } | |
1117 | } | |
1118 | for (i = 0; i < placement->num_busy_placement; i++) { | |
1119 | if (!capable(CAP_SYS_ADMIN)) { | |
1120 | if (placement->busy_placement[i] & TTM_PL_FLAG_NO_EVICT) { | |
1121 | printk(KERN_ERR TTM_PFX "Need to be root to " | |
1122 | "modify NO_EVICT status.\n"); | |
1123 | return -EINVAL; | |
1124 | } | |
ba4e7d97 TH |
1125 | } |
1126 | } | |
1127 | return 0; | |
1128 | } | |
1129 | ||
09855acb JG |
1130 | int ttm_bo_init(struct ttm_bo_device *bdev, |
1131 | struct ttm_buffer_object *bo, | |
1132 | unsigned long size, | |
1133 | enum ttm_bo_type type, | |
1134 | struct ttm_placement *placement, | |
1135 | uint32_t page_alignment, | |
1136 | unsigned long buffer_start, | |
1137 | bool interruptible, | |
1138 | struct file *persistant_swap_storage, | |
1139 | size_t acc_size, | |
1140 | void (*destroy) (struct ttm_buffer_object *)) | |
ba4e7d97 | 1141 | { |
09855acb | 1142 | int ret = 0; |
ba4e7d97 TH |
1143 | unsigned long num_pages; |
1144 | ||
1145 | size += buffer_start & ~PAGE_MASK; | |
1146 | num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; | |
1147 | if (num_pages == 0) { | |
1148 | printk(KERN_ERR TTM_PFX "Illegal buffer object size.\n"); | |
1149 | return -EINVAL; | |
1150 | } | |
1151 | bo->destroy = destroy; | |
1152 | ||
1153 | spin_lock_init(&bo->lock); | |
1154 | kref_init(&bo->kref); | |
1155 | kref_init(&bo->list_kref); | |
1156 | atomic_set(&bo->cpu_writers, 0); | |
1157 | atomic_set(&bo->reserved, 1); | |
1158 | init_waitqueue_head(&bo->event_queue); | |
1159 | INIT_LIST_HEAD(&bo->lru); | |
1160 | INIT_LIST_HEAD(&bo->ddestroy); | |
1161 | INIT_LIST_HEAD(&bo->swap); | |
1162 | bo->bdev = bdev; | |
a987fcaa | 1163 | bo->glob = bdev->glob; |
ba4e7d97 TH |
1164 | bo->type = type; |
1165 | bo->num_pages = num_pages; | |
eb6d2c39 | 1166 | bo->mem.size = num_pages << PAGE_SHIFT; |
ba4e7d97 TH |
1167 | bo->mem.mem_type = TTM_PL_SYSTEM; |
1168 | bo->mem.num_pages = bo->num_pages; | |
1169 | bo->mem.mm_node = NULL; | |
1170 | bo->mem.page_alignment = page_alignment; | |
82c5da6b | 1171 | bo->mem.bus.io_reserved = false; |
ba4e7d97 TH |
1172 | bo->buffer_start = buffer_start & PAGE_MASK; |
1173 | bo->priv_flags = 0; | |
1174 | bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED); | |
1175 | bo->seq_valid = false; | |
1176 | bo->persistant_swap_storage = persistant_swap_storage; | |
1177 | bo->acc_size = acc_size; | |
a987fcaa | 1178 | atomic_inc(&bo->glob->bo_count); |
ba4e7d97 | 1179 | |
09855acb | 1180 | ret = ttm_bo_check_placement(bo, placement); |
ba4e7d97 TH |
1181 | if (unlikely(ret != 0)) |
1182 | goto out_err; | |
1183 | ||
ba4e7d97 TH |
1184 | /* |
1185 | * For ttm_bo_type_device buffers, allocate | |
1186 | * address space from the device. | |
1187 | */ | |
ba4e7d97 TH |
1188 | if (bo->type == ttm_bo_type_device) { |
1189 | ret = ttm_bo_setup_vm(bo); | |
1190 | if (ret) | |
1191 | goto out_err; | |
1192 | } | |
1193 | ||
9d87fa21 | 1194 | ret = ttm_bo_validate(bo, placement, interruptible, false, false); |
ba4e7d97 TH |
1195 | if (ret) |
1196 | goto out_err; | |
1197 | ||
1198 | ttm_bo_unreserve(bo); | |
1199 | return 0; | |
1200 | ||
1201 | out_err: | |
1202 | ttm_bo_unreserve(bo); | |
1203 | ttm_bo_unref(&bo); | |
1204 | ||
1205 | return ret; | |
1206 | } | |
09855acb | 1207 | EXPORT_SYMBOL(ttm_bo_init); |
ba4e7d97 | 1208 | |
a987fcaa | 1209 | static inline size_t ttm_bo_size(struct ttm_bo_global *glob, |
ba4e7d97 TH |
1210 | unsigned long num_pages) |
1211 | { | |
1212 | size_t page_array_size = (num_pages * sizeof(void *) + PAGE_SIZE - 1) & | |
1213 | PAGE_MASK; | |
1214 | ||
a987fcaa | 1215 | return glob->ttm_bo_size + 2 * page_array_size; |
ba4e7d97 TH |
1216 | } |
1217 | ||
09855acb JG |
1218 | int ttm_bo_create(struct ttm_bo_device *bdev, |
1219 | unsigned long size, | |
1220 | enum ttm_bo_type type, | |
1221 | struct ttm_placement *placement, | |
1222 | uint32_t page_alignment, | |
1223 | unsigned long buffer_start, | |
1224 | bool interruptible, | |
1225 | struct file *persistant_swap_storage, | |
1226 | struct ttm_buffer_object **p_bo) | |
ba4e7d97 TH |
1227 | { |
1228 | struct ttm_buffer_object *bo; | |
a987fcaa | 1229 | struct ttm_mem_global *mem_glob = bdev->glob->mem_glob; |
ca262a99 | 1230 | int ret; |
ba4e7d97 TH |
1231 | |
1232 | size_t acc_size = | |
a987fcaa | 1233 | ttm_bo_size(bdev->glob, (size + PAGE_SIZE - 1) >> PAGE_SHIFT); |
5fd9cbad | 1234 | ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false); |
ba4e7d97 TH |
1235 | if (unlikely(ret != 0)) |
1236 | return ret; | |
1237 | ||
1238 | bo = kzalloc(sizeof(*bo), GFP_KERNEL); | |
1239 | ||
1240 | if (unlikely(bo == NULL)) { | |
5fd9cbad | 1241 | ttm_mem_global_free(mem_glob, acc_size); |
ba4e7d97 TH |
1242 | return -ENOMEM; |
1243 | } | |
1244 | ||
09855acb JG |
1245 | ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment, |
1246 | buffer_start, interruptible, | |
1247 | persistant_swap_storage, acc_size, NULL); | |
ba4e7d97 TH |
1248 | if (likely(ret == 0)) |
1249 | *p_bo = bo; | |
1250 | ||
1251 | return ret; | |
1252 | } | |
1253 | ||
ba4e7d97 | 1254 | static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, |
ca262a99 | 1255 | unsigned mem_type, bool allow_errors) |
ba4e7d97 | 1256 | { |
ca262a99 | 1257 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
a987fcaa | 1258 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 | 1259 | int ret; |
ba4e7d97 TH |
1260 | |
1261 | /* | |
1262 | * Can't use standard list traversal since we're unlocking. | |
1263 | */ | |
1264 | ||
a987fcaa | 1265 | spin_lock(&glob->lru_lock); |
ca262a99 | 1266 | while (!list_empty(&man->lru)) { |
a987fcaa | 1267 | spin_unlock(&glob->lru_lock); |
9d87fa21 | 1268 | ret = ttm_mem_evict_first(bdev, mem_type, false, false, false); |
ca262a99 JG |
1269 | if (ret) { |
1270 | if (allow_errors) { | |
1271 | return ret; | |
1272 | } else { | |
1273 | printk(KERN_ERR TTM_PFX | |
1274 | "Cleanup eviction failed\n"); | |
1275 | } | |
1276 | } | |
a987fcaa | 1277 | spin_lock(&glob->lru_lock); |
ba4e7d97 | 1278 | } |
a987fcaa | 1279 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
1280 | return 0; |
1281 | } | |
1282 | ||
1283 | int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1284 | { | |
a987fcaa | 1285 | struct ttm_bo_global *glob = bdev->glob; |
c96e7c7a | 1286 | struct ttm_mem_type_manager *man; |
ba4e7d97 TH |
1287 | int ret = -EINVAL; |
1288 | ||
1289 | if (mem_type >= TTM_NUM_MEM_TYPES) { | |
1290 | printk(KERN_ERR TTM_PFX "Illegal memory type %d\n", mem_type); | |
1291 | return ret; | |
1292 | } | |
c96e7c7a | 1293 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
1294 | |
1295 | if (!man->has_type) { | |
1296 | printk(KERN_ERR TTM_PFX "Trying to take down uninitialized " | |
1297 | "memory manager type %u\n", mem_type); | |
1298 | return ret; | |
1299 | } | |
1300 | ||
1301 | man->use_type = false; | |
1302 | man->has_type = false; | |
1303 | ||
1304 | ret = 0; | |
1305 | if (mem_type > 0) { | |
ca262a99 | 1306 | ttm_bo_force_list_clean(bdev, mem_type, false); |
ba4e7d97 | 1307 | |
a987fcaa | 1308 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
1309 | if (drm_mm_clean(&man->manager)) |
1310 | drm_mm_takedown(&man->manager); | |
1311 | else | |
1312 | ret = -EBUSY; | |
1313 | ||
a987fcaa | 1314 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
1315 | } |
1316 | ||
1317 | return ret; | |
1318 | } | |
1319 | EXPORT_SYMBOL(ttm_bo_clean_mm); | |
1320 | ||
1321 | int ttm_bo_evict_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1322 | { | |
1323 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
1324 | ||
1325 | if (mem_type == 0 || mem_type >= TTM_NUM_MEM_TYPES) { | |
1326 | printk(KERN_ERR TTM_PFX | |
1327 | "Illegal memory manager memory type %u.\n", | |
1328 | mem_type); | |
1329 | return -EINVAL; | |
1330 | } | |
1331 | ||
1332 | if (!man->has_type) { | |
1333 | printk(KERN_ERR TTM_PFX | |
1334 | "Memory type %u has not been initialized.\n", | |
1335 | mem_type); | |
1336 | return 0; | |
1337 | } | |
1338 | ||
ca262a99 | 1339 | return ttm_bo_force_list_clean(bdev, mem_type, true); |
ba4e7d97 TH |
1340 | } |
1341 | EXPORT_SYMBOL(ttm_bo_evict_mm); | |
1342 | ||
1343 | int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type, | |
ca262a99 | 1344 | unsigned long p_size) |
ba4e7d97 TH |
1345 | { |
1346 | int ret = -EINVAL; | |
1347 | struct ttm_mem_type_manager *man; | |
1348 | ||
1349 | if (type >= TTM_NUM_MEM_TYPES) { | |
1350 | printk(KERN_ERR TTM_PFX "Illegal memory type %d\n", type); | |
1351 | return ret; | |
1352 | } | |
1353 | ||
1354 | man = &bdev->man[type]; | |
1355 | if (man->has_type) { | |
1356 | printk(KERN_ERR TTM_PFX | |
1357 | "Memory manager already initialized for type %d\n", | |
1358 | type); | |
1359 | return ret; | |
1360 | } | |
1361 | ||
1362 | ret = bdev->driver->init_mem_type(bdev, type, man); | |
1363 | if (ret) | |
1364 | return ret; | |
1365 | ||
1366 | ret = 0; | |
1367 | if (type != TTM_PL_SYSTEM) { | |
1368 | if (!p_size) { | |
1369 | printk(KERN_ERR TTM_PFX | |
1370 | "Zero size memory manager type %d\n", | |
1371 | type); | |
1372 | return ret; | |
1373 | } | |
ca262a99 | 1374 | ret = drm_mm_init(&man->manager, 0, p_size); |
ba4e7d97 TH |
1375 | if (ret) |
1376 | return ret; | |
1377 | } | |
1378 | man->has_type = true; | |
1379 | man->use_type = true; | |
1380 | man->size = p_size; | |
1381 | ||
1382 | INIT_LIST_HEAD(&man->lru); | |
1383 | ||
1384 | return 0; | |
1385 | } | |
1386 | EXPORT_SYMBOL(ttm_bo_init_mm); | |
1387 | ||
a987fcaa TH |
1388 | static void ttm_bo_global_kobj_release(struct kobject *kobj) |
1389 | { | |
1390 | struct ttm_bo_global *glob = | |
1391 | container_of(kobj, struct ttm_bo_global, kobj); | |
1392 | ||
a987fcaa TH |
1393 | ttm_mem_unregister_shrink(glob->mem_glob, &glob->shrink); |
1394 | __free_page(glob->dummy_read_page); | |
1395 | kfree(glob); | |
1396 | } | |
1397 | ||
ba4420c2 | 1398 | void ttm_bo_global_release(struct drm_global_reference *ref) |
a987fcaa TH |
1399 | { |
1400 | struct ttm_bo_global *glob = ref->object; | |
1401 | ||
1402 | kobject_del(&glob->kobj); | |
1403 | kobject_put(&glob->kobj); | |
1404 | } | |
1405 | EXPORT_SYMBOL(ttm_bo_global_release); | |
1406 | ||
ba4420c2 | 1407 | int ttm_bo_global_init(struct drm_global_reference *ref) |
a987fcaa TH |
1408 | { |
1409 | struct ttm_bo_global_ref *bo_ref = | |
1410 | container_of(ref, struct ttm_bo_global_ref, ref); | |
1411 | struct ttm_bo_global *glob = ref->object; | |
1412 | int ret; | |
1413 | ||
1414 | mutex_init(&glob->device_list_mutex); | |
1415 | spin_lock_init(&glob->lru_lock); | |
1416 | glob->mem_glob = bo_ref->mem_glob; | |
1417 | glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); | |
1418 | ||
1419 | if (unlikely(glob->dummy_read_page == NULL)) { | |
1420 | ret = -ENOMEM; | |
1421 | goto out_no_drp; | |
1422 | } | |
1423 | ||
1424 | INIT_LIST_HEAD(&glob->swap_lru); | |
1425 | INIT_LIST_HEAD(&glob->device_list); | |
1426 | ||
1427 | ttm_mem_init_shrink(&glob->shrink, ttm_bo_swapout); | |
1428 | ret = ttm_mem_register_shrink(glob->mem_glob, &glob->shrink); | |
1429 | if (unlikely(ret != 0)) { | |
1430 | printk(KERN_ERR TTM_PFX | |
1431 | "Could not register buffer object swapout.\n"); | |
1432 | goto out_no_shrink; | |
1433 | } | |
1434 | ||
1435 | glob->ttm_bo_extra_size = | |
1436 | ttm_round_pot(sizeof(struct ttm_tt)) + | |
1437 | ttm_round_pot(sizeof(struct ttm_backend)); | |
1438 | ||
1439 | glob->ttm_bo_size = glob->ttm_bo_extra_size + | |
1440 | ttm_round_pot(sizeof(struct ttm_buffer_object)); | |
1441 | ||
1442 | atomic_set(&glob->bo_count, 0); | |
1443 | ||
b642ed06 RD |
1444 | ret = kobject_init_and_add( |
1445 | &glob->kobj, &ttm_bo_glob_kobj_type, ttm_get_kobj(), "buffer_objects"); | |
a987fcaa TH |
1446 | if (unlikely(ret != 0)) |
1447 | kobject_put(&glob->kobj); | |
1448 | return ret; | |
1449 | out_no_shrink: | |
1450 | __free_page(glob->dummy_read_page); | |
1451 | out_no_drp: | |
1452 | kfree(glob); | |
1453 | return ret; | |
1454 | } | |
1455 | EXPORT_SYMBOL(ttm_bo_global_init); | |
1456 | ||
1457 | ||
ba4e7d97 TH |
1458 | int ttm_bo_device_release(struct ttm_bo_device *bdev) |
1459 | { | |
1460 | int ret = 0; | |
1461 | unsigned i = TTM_NUM_MEM_TYPES; | |
1462 | struct ttm_mem_type_manager *man; | |
a987fcaa | 1463 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 TH |
1464 | |
1465 | while (i--) { | |
1466 | man = &bdev->man[i]; | |
1467 | if (man->has_type) { | |
1468 | man->use_type = false; | |
1469 | if ((i != TTM_PL_SYSTEM) && ttm_bo_clean_mm(bdev, i)) { | |
1470 | ret = -EBUSY; | |
1471 | printk(KERN_ERR TTM_PFX | |
1472 | "DRM memory manager type %d " | |
1473 | "is not clean.\n", i); | |
1474 | } | |
1475 | man->has_type = false; | |
1476 | } | |
1477 | } | |
1478 | ||
a987fcaa TH |
1479 | mutex_lock(&glob->device_list_mutex); |
1480 | list_del(&bdev->device_list); | |
1481 | mutex_unlock(&glob->device_list_mutex); | |
1482 | ||
ba4e7d97 TH |
1483 | if (!cancel_delayed_work(&bdev->wq)) |
1484 | flush_scheduled_work(); | |
1485 | ||
1486 | while (ttm_bo_delayed_delete(bdev, true)) | |
1487 | ; | |
1488 | ||
a987fcaa | 1489 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
1490 | if (list_empty(&bdev->ddestroy)) |
1491 | TTM_DEBUG("Delayed destroy list was clean\n"); | |
1492 | ||
1493 | if (list_empty(&bdev->man[0].lru)) | |
1494 | TTM_DEBUG("Swap list was clean\n"); | |
a987fcaa | 1495 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1496 | |
ba4e7d97 TH |
1497 | BUG_ON(!drm_mm_clean(&bdev->addr_space_mm)); |
1498 | write_lock(&bdev->vm_lock); | |
1499 | drm_mm_takedown(&bdev->addr_space_mm); | |
1500 | write_unlock(&bdev->vm_lock); | |
1501 | ||
ba4e7d97 TH |
1502 | return ret; |
1503 | } | |
1504 | EXPORT_SYMBOL(ttm_bo_device_release); | |
1505 | ||
ba4e7d97 | 1506 | int ttm_bo_device_init(struct ttm_bo_device *bdev, |
a987fcaa TH |
1507 | struct ttm_bo_global *glob, |
1508 | struct ttm_bo_driver *driver, | |
51c8b407 | 1509 | uint64_t file_page_offset, |
ad49f501 | 1510 | bool need_dma32) |
ba4e7d97 TH |
1511 | { |
1512 | int ret = -EINVAL; | |
1513 | ||
ba4e7d97 | 1514 | rwlock_init(&bdev->vm_lock); |
ba4e7d97 | 1515 | bdev->driver = driver; |
ba4e7d97 TH |
1516 | |
1517 | memset(bdev->man, 0, sizeof(bdev->man)); | |
1518 | ||
ba4e7d97 TH |
1519 | /* |
1520 | * Initialize the system memory buffer type. | |
1521 | * Other types need to be driver / IOCTL initialized. | |
1522 | */ | |
ca262a99 | 1523 | ret = ttm_bo_init_mm(bdev, TTM_PL_SYSTEM, 0); |
ba4e7d97 | 1524 | if (unlikely(ret != 0)) |
a987fcaa | 1525 | goto out_no_sys; |
ba4e7d97 TH |
1526 | |
1527 | bdev->addr_space_rb = RB_ROOT; | |
1528 | ret = drm_mm_init(&bdev->addr_space_mm, file_page_offset, 0x10000000); | |
1529 | if (unlikely(ret != 0)) | |
a987fcaa | 1530 | goto out_no_addr_mm; |
ba4e7d97 TH |
1531 | |
1532 | INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue); | |
1533 | bdev->nice_mode = true; | |
1534 | INIT_LIST_HEAD(&bdev->ddestroy); | |
ba4e7d97 | 1535 | bdev->dev_mapping = NULL; |
a987fcaa | 1536 | bdev->glob = glob; |
ad49f501 | 1537 | bdev->need_dma32 = need_dma32; |
ba4e7d97 | 1538 | |
a987fcaa TH |
1539 | mutex_lock(&glob->device_list_mutex); |
1540 | list_add_tail(&bdev->device_list, &glob->device_list); | |
1541 | mutex_unlock(&glob->device_list_mutex); | |
ba4e7d97 TH |
1542 | |
1543 | return 0; | |
a987fcaa | 1544 | out_no_addr_mm: |
ba4e7d97 | 1545 | ttm_bo_clean_mm(bdev, 0); |
a987fcaa | 1546 | out_no_sys: |
ba4e7d97 TH |
1547 | return ret; |
1548 | } | |
1549 | EXPORT_SYMBOL(ttm_bo_device_init); | |
1550 | ||
1551 | /* | |
1552 | * buffer object vm functions. | |
1553 | */ | |
1554 | ||
1555 | bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
1556 | { | |
1557 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
1558 | ||
1559 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) { | |
1560 | if (mem->mem_type == TTM_PL_SYSTEM) | |
1561 | return false; | |
1562 | ||
1563 | if (man->flags & TTM_MEMTYPE_FLAG_CMA) | |
1564 | return false; | |
1565 | ||
1566 | if (mem->placement & TTM_PL_FLAG_CACHED) | |
1567 | return false; | |
1568 | } | |
1569 | return true; | |
1570 | } | |
1571 | ||
ba4e7d97 TH |
1572 | void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo) |
1573 | { | |
1574 | struct ttm_bo_device *bdev = bo->bdev; | |
1575 | loff_t offset = (loff_t) bo->addr_space_offset; | |
1576 | loff_t holelen = ((loff_t) bo->mem.num_pages) << PAGE_SHIFT; | |
1577 | ||
1578 | if (!bdev->dev_mapping) | |
1579 | return; | |
ba4e7d97 | 1580 | unmap_mapping_range(bdev->dev_mapping, offset, holelen, 1); |
82c5da6b | 1581 | ttm_mem_io_free(bdev, &bo->mem); |
ba4e7d97 | 1582 | } |
e024e110 | 1583 | EXPORT_SYMBOL(ttm_bo_unmap_virtual); |
ba4e7d97 TH |
1584 | |
1585 | static void ttm_bo_vm_insert_rb(struct ttm_buffer_object *bo) | |
1586 | { | |
1587 | struct ttm_bo_device *bdev = bo->bdev; | |
1588 | struct rb_node **cur = &bdev->addr_space_rb.rb_node; | |
1589 | struct rb_node *parent = NULL; | |
1590 | struct ttm_buffer_object *cur_bo; | |
1591 | unsigned long offset = bo->vm_node->start; | |
1592 | unsigned long cur_offset; | |
1593 | ||
1594 | while (*cur) { | |
1595 | parent = *cur; | |
1596 | cur_bo = rb_entry(parent, struct ttm_buffer_object, vm_rb); | |
1597 | cur_offset = cur_bo->vm_node->start; | |
1598 | if (offset < cur_offset) | |
1599 | cur = &parent->rb_left; | |
1600 | else if (offset > cur_offset) | |
1601 | cur = &parent->rb_right; | |
1602 | else | |
1603 | BUG(); | |
1604 | } | |
1605 | ||
1606 | rb_link_node(&bo->vm_rb, parent, cur); | |
1607 | rb_insert_color(&bo->vm_rb, &bdev->addr_space_rb); | |
1608 | } | |
1609 | ||
1610 | /** | |
1611 | * ttm_bo_setup_vm: | |
1612 | * | |
1613 | * @bo: the buffer to allocate address space for | |
1614 | * | |
1615 | * Allocate address space in the drm device so that applications | |
1616 | * can mmap the buffer and access the contents. This only | |
1617 | * applies to ttm_bo_type_device objects as others are not | |
1618 | * placed in the drm device address space. | |
1619 | */ | |
1620 | ||
1621 | static int ttm_bo_setup_vm(struct ttm_buffer_object *bo) | |
1622 | { | |
1623 | struct ttm_bo_device *bdev = bo->bdev; | |
1624 | int ret; | |
1625 | ||
1626 | retry_pre_get: | |
1627 | ret = drm_mm_pre_get(&bdev->addr_space_mm); | |
1628 | if (unlikely(ret != 0)) | |
1629 | return ret; | |
1630 | ||
1631 | write_lock(&bdev->vm_lock); | |
1632 | bo->vm_node = drm_mm_search_free(&bdev->addr_space_mm, | |
1633 | bo->mem.num_pages, 0, 0); | |
1634 | ||
1635 | if (unlikely(bo->vm_node == NULL)) { | |
1636 | ret = -ENOMEM; | |
1637 | goto out_unlock; | |
1638 | } | |
1639 | ||
1640 | bo->vm_node = drm_mm_get_block_atomic(bo->vm_node, | |
1641 | bo->mem.num_pages, 0); | |
1642 | ||
1643 | if (unlikely(bo->vm_node == NULL)) { | |
1644 | write_unlock(&bdev->vm_lock); | |
1645 | goto retry_pre_get; | |
1646 | } | |
1647 | ||
1648 | ttm_bo_vm_insert_rb(bo); | |
1649 | write_unlock(&bdev->vm_lock); | |
1650 | bo->addr_space_offset = ((uint64_t) bo->vm_node->start) << PAGE_SHIFT; | |
1651 | ||
1652 | return 0; | |
1653 | out_unlock: | |
1654 | write_unlock(&bdev->vm_lock); | |
1655 | return ret; | |
1656 | } | |
1657 | ||
1658 | int ttm_bo_wait(struct ttm_buffer_object *bo, | |
1659 | bool lazy, bool interruptible, bool no_wait) | |
1660 | { | |
1661 | struct ttm_bo_driver *driver = bo->bdev->driver; | |
1662 | void *sync_obj; | |
1663 | void *sync_obj_arg; | |
1664 | int ret = 0; | |
1665 | ||
1666 | if (likely(bo->sync_obj == NULL)) | |
1667 | return 0; | |
1668 | ||
1669 | while (bo->sync_obj) { | |
1670 | ||
1671 | if (driver->sync_obj_signaled(bo->sync_obj, bo->sync_obj_arg)) { | |
1672 | void *tmp_obj = bo->sync_obj; | |
1673 | bo->sync_obj = NULL; | |
1674 | clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); | |
1675 | spin_unlock(&bo->lock); | |
1676 | driver->sync_obj_unref(&tmp_obj); | |
1677 | spin_lock(&bo->lock); | |
1678 | continue; | |
1679 | } | |
1680 | ||
1681 | if (no_wait) | |
1682 | return -EBUSY; | |
1683 | ||
1684 | sync_obj = driver->sync_obj_ref(bo->sync_obj); | |
1685 | sync_obj_arg = bo->sync_obj_arg; | |
1686 | spin_unlock(&bo->lock); | |
1687 | ret = driver->sync_obj_wait(sync_obj, sync_obj_arg, | |
1688 | lazy, interruptible); | |
1689 | if (unlikely(ret != 0)) { | |
1690 | driver->sync_obj_unref(&sync_obj); | |
1691 | spin_lock(&bo->lock); | |
1692 | return ret; | |
1693 | } | |
1694 | spin_lock(&bo->lock); | |
1695 | if (likely(bo->sync_obj == sync_obj && | |
1696 | bo->sync_obj_arg == sync_obj_arg)) { | |
1697 | void *tmp_obj = bo->sync_obj; | |
1698 | bo->sync_obj = NULL; | |
1699 | clear_bit(TTM_BO_PRIV_FLAG_MOVING, | |
1700 | &bo->priv_flags); | |
1701 | spin_unlock(&bo->lock); | |
1702 | driver->sync_obj_unref(&sync_obj); | |
1703 | driver->sync_obj_unref(&tmp_obj); | |
1704 | spin_lock(&bo->lock); | |
fee280d3 TH |
1705 | } else { |
1706 | spin_unlock(&bo->lock); | |
1707 | driver->sync_obj_unref(&sync_obj); | |
1708 | spin_lock(&bo->lock); | |
ba4e7d97 TH |
1709 | } |
1710 | } | |
1711 | return 0; | |
1712 | } | |
1713 | EXPORT_SYMBOL(ttm_bo_wait); | |
1714 | ||
ba4e7d97 TH |
1715 | int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) |
1716 | { | |
1717 | int ret = 0; | |
1718 | ||
1719 | /* | |
8cfe92d6 | 1720 | * Using ttm_bo_reserve makes sure the lru lists are updated. |
ba4e7d97 TH |
1721 | */ |
1722 | ||
1723 | ret = ttm_bo_reserve(bo, true, no_wait, false, 0); | |
1724 | if (unlikely(ret != 0)) | |
1725 | return ret; | |
1726 | spin_lock(&bo->lock); | |
1727 | ret = ttm_bo_wait(bo, false, true, no_wait); | |
1728 | spin_unlock(&bo->lock); | |
1729 | if (likely(ret == 0)) | |
1730 | atomic_inc(&bo->cpu_writers); | |
1731 | ttm_bo_unreserve(bo); | |
1732 | return ret; | |
1733 | } | |
d1ede145 | 1734 | EXPORT_SYMBOL(ttm_bo_synccpu_write_grab); |
ba4e7d97 TH |
1735 | |
1736 | void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo) | |
1737 | { | |
1738 | if (atomic_dec_and_test(&bo->cpu_writers)) | |
1739 | wake_up_all(&bo->event_queue); | |
1740 | } | |
d1ede145 | 1741 | EXPORT_SYMBOL(ttm_bo_synccpu_write_release); |
ba4e7d97 TH |
1742 | |
1743 | /** | |
1744 | * A buffer object shrink method that tries to swap out the first | |
1745 | * buffer object on the bo_global::swap_lru list. | |
1746 | */ | |
1747 | ||
1748 | static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) | |
1749 | { | |
a987fcaa TH |
1750 | struct ttm_bo_global *glob = |
1751 | container_of(shrink, struct ttm_bo_global, shrink); | |
ba4e7d97 TH |
1752 | struct ttm_buffer_object *bo; |
1753 | int ret = -EBUSY; | |
1754 | int put_count; | |
1755 | uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); | |
1756 | ||
a987fcaa | 1757 | spin_lock(&glob->lru_lock); |
ba4e7d97 | 1758 | while (ret == -EBUSY) { |
a987fcaa TH |
1759 | if (unlikely(list_empty(&glob->swap_lru))) { |
1760 | spin_unlock(&glob->lru_lock); | |
ba4e7d97 TH |
1761 | return -EBUSY; |
1762 | } | |
1763 | ||
a987fcaa | 1764 | bo = list_first_entry(&glob->swap_lru, |
ba4e7d97 TH |
1765 | struct ttm_buffer_object, swap); |
1766 | kref_get(&bo->list_kref); | |
1767 | ||
1768 | /** | |
1769 | * Reserve buffer. Since we unlock while sleeping, we need | |
1770 | * to re-check that nobody removed us from the swap-list while | |
1771 | * we slept. | |
1772 | */ | |
1773 | ||
1774 | ret = ttm_bo_reserve_locked(bo, false, true, false, 0); | |
1775 | if (unlikely(ret == -EBUSY)) { | |
a987fcaa | 1776 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
1777 | ttm_bo_wait_unreserved(bo, false); |
1778 | kref_put(&bo->list_kref, ttm_bo_release_list); | |
a987fcaa | 1779 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
1780 | } |
1781 | } | |
1782 | ||
1783 | BUG_ON(ret != 0); | |
1784 | put_count = ttm_bo_del_from_lru(bo); | |
a987fcaa | 1785 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
1786 | |
1787 | while (put_count--) | |
1788 | kref_put(&bo->list_kref, ttm_bo_ref_bug); | |
1789 | ||
1790 | /** | |
1791 | * Wait for GPU, then move to system cached. | |
1792 | */ | |
1793 | ||
1794 | spin_lock(&bo->lock); | |
1795 | ret = ttm_bo_wait(bo, false, false, false); | |
1796 | spin_unlock(&bo->lock); | |
1797 | ||
1798 | if (unlikely(ret != 0)) | |
1799 | goto out; | |
1800 | ||
1801 | if ((bo->mem.placement & swap_placement) != swap_placement) { | |
1802 | struct ttm_mem_reg evict_mem; | |
1803 | ||
1804 | evict_mem = bo->mem; | |
1805 | evict_mem.mm_node = NULL; | |
1806 | evict_mem.placement = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED; | |
1807 | evict_mem.mem_type = TTM_PL_SYSTEM; | |
1808 | ||
1809 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, | |
9d87fa21 | 1810 | false, false, false); |
ba4e7d97 TH |
1811 | if (unlikely(ret != 0)) |
1812 | goto out; | |
1813 | } | |
1814 | ||
1815 | ttm_bo_unmap_virtual(bo); | |
1816 | ||
1817 | /** | |
1818 | * Swap out. Buffer will be swapped in again as soon as | |
1819 | * anyone tries to access a ttm page. | |
1820 | */ | |
1821 | ||
3f09ea4e TH |
1822 | if (bo->bdev->driver->swap_notify) |
1823 | bo->bdev->driver->swap_notify(bo); | |
1824 | ||
ba4e7d97 TH |
1825 | ret = ttm_tt_swapout(bo->ttm, bo->persistant_swap_storage); |
1826 | out: | |
1827 | ||
1828 | /** | |
1829 | * | |
1830 | * Unreserve without putting on LRU to avoid swapping out an | |
1831 | * already swapped buffer. | |
1832 | */ | |
1833 | ||
1834 | atomic_set(&bo->reserved, 0); | |
1835 | wake_up_all(&bo->event_queue); | |
1836 | kref_put(&bo->list_kref, ttm_bo_release_list); | |
1837 | return ret; | |
1838 | } | |
1839 | ||
1840 | void ttm_bo_swapout_all(struct ttm_bo_device *bdev) | |
1841 | { | |
a987fcaa | 1842 | while (ttm_bo_swapout(&bdev->glob->shrink) == 0) |
ba4e7d97 TH |
1843 | ; |
1844 | } | |
e99e1e78 | 1845 | EXPORT_SYMBOL(ttm_bo_swapout_all); |