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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 | */ | |
30 | ||
25d0479a JP |
31 | #define pr_fmt(fmt) "[TTM] " fmt |
32 | ||
760285e7 DH |
33 | #include <drm/ttm/ttm_module.h> |
34 | #include <drm/ttm/ttm_bo_driver.h> | |
35 | #include <drm/ttm/ttm_placement.h> | |
ba4e7d97 TH |
36 | #include <linux/jiffies.h> |
37 | #include <linux/slab.h> | |
38 | #include <linux/sched.h> | |
39 | #include <linux/mm.h> | |
40 | #include <linux/file.h> | |
41 | #include <linux/module.h> | |
60063497 | 42 | #include <linux/atomic.h> |
ba4e7d97 TH |
43 | |
44 | #define TTM_ASSERT_LOCKED(param) | |
45 | #define TTM_DEBUG(fmt, arg...) | |
46 | #define TTM_BO_HASH_ORDER 13 | |
47 | ||
ba4e7d97 | 48 | static int ttm_bo_swapout(struct ttm_mem_shrink *shrink); |
a987fcaa TH |
49 | static void ttm_bo_global_kobj_release(struct kobject *kobj); |
50 | ||
51 | static struct attribute ttm_bo_count = { | |
52 | .name = "bo_count", | |
53 | .mode = S_IRUGO | |
54 | }; | |
55 | ||
fb53f862 JG |
56 | static inline int ttm_mem_type_from_flags(uint32_t flags, uint32_t *mem_type) |
57 | { | |
58 | int i; | |
59 | ||
60 | for (i = 0; i <= TTM_PL_PRIV5; i++) | |
61 | if (flags & (1 << i)) { | |
62 | *mem_type = i; | |
63 | return 0; | |
64 | } | |
65 | return -EINVAL; | |
66 | } | |
67 | ||
5012f506 | 68 | static void ttm_mem_type_debug(struct ttm_bo_device *bdev, int mem_type) |
fb53f862 | 69 | { |
5012f506 JG |
70 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
71 | ||
25d0479a JP |
72 | pr_err(" has_type: %d\n", man->has_type); |
73 | pr_err(" use_type: %d\n", man->use_type); | |
74 | pr_err(" flags: 0x%08X\n", man->flags); | |
75 | pr_err(" gpu_offset: 0x%08lX\n", man->gpu_offset); | |
76 | pr_err(" size: %llu\n", man->size); | |
77 | pr_err(" available_caching: 0x%08X\n", man->available_caching); | |
78 | pr_err(" default_caching: 0x%08X\n", man->default_caching); | |
d961db75 BS |
79 | if (mem_type != TTM_PL_SYSTEM) |
80 | (*man->func->debug)(man, TTM_PFX); | |
fb53f862 JG |
81 | } |
82 | ||
83 | static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo, | |
84 | struct ttm_placement *placement) | |
85 | { | |
fb53f862 JG |
86 | int i, ret, mem_type; |
87 | ||
25d0479a JP |
88 | pr_err("No space for %p (%lu pages, %luK, %luM)\n", |
89 | bo, bo->mem.num_pages, bo->mem.size >> 10, | |
90 | bo->mem.size >> 20); | |
fb53f862 JG |
91 | for (i = 0; i < placement->num_placement; i++) { |
92 | ret = ttm_mem_type_from_flags(placement->placement[i], | |
93 | &mem_type); | |
94 | if (ret) | |
95 | return; | |
25d0479a JP |
96 | pr_err(" placement[%d]=0x%08X (%d)\n", |
97 | i, placement->placement[i], mem_type); | |
5012f506 | 98 | ttm_mem_type_debug(bo->bdev, mem_type); |
fb53f862 JG |
99 | } |
100 | } | |
101 | ||
a987fcaa TH |
102 | static ssize_t ttm_bo_global_show(struct kobject *kobj, |
103 | struct attribute *attr, | |
104 | char *buffer) | |
105 | { | |
106 | struct ttm_bo_global *glob = | |
107 | container_of(kobj, struct ttm_bo_global, kobj); | |
108 | ||
109 | return snprintf(buffer, PAGE_SIZE, "%lu\n", | |
110 | (unsigned long) atomic_read(&glob->bo_count)); | |
111 | } | |
112 | ||
113 | static struct attribute *ttm_bo_global_attrs[] = { | |
114 | &ttm_bo_count, | |
115 | NULL | |
116 | }; | |
117 | ||
52cf25d0 | 118 | static const struct sysfs_ops ttm_bo_global_ops = { |
a987fcaa TH |
119 | .show = &ttm_bo_global_show |
120 | }; | |
121 | ||
122 | static struct kobj_type ttm_bo_glob_kobj_type = { | |
123 | .release = &ttm_bo_global_kobj_release, | |
124 | .sysfs_ops = &ttm_bo_global_ops, | |
125 | .default_attrs = ttm_bo_global_attrs | |
126 | }; | |
127 | ||
ba4e7d97 TH |
128 | |
129 | static inline uint32_t ttm_bo_type_flags(unsigned type) | |
130 | { | |
131 | return 1 << (type); | |
132 | } | |
133 | ||
134 | static void ttm_bo_release_list(struct kref *list_kref) | |
135 | { | |
136 | struct ttm_buffer_object *bo = | |
137 | container_of(list_kref, struct ttm_buffer_object, list_kref); | |
138 | struct ttm_bo_device *bdev = bo->bdev; | |
57de4ba9 | 139 | size_t acc_size = bo->acc_size; |
ba4e7d97 TH |
140 | |
141 | BUG_ON(atomic_read(&bo->list_kref.refcount)); | |
142 | BUG_ON(atomic_read(&bo->kref.refcount)); | |
143 | BUG_ON(atomic_read(&bo->cpu_writers)); | |
144 | BUG_ON(bo->sync_obj != NULL); | |
145 | BUG_ON(bo->mem.mm_node != NULL); | |
146 | BUG_ON(!list_empty(&bo->lru)); | |
147 | BUG_ON(!list_empty(&bo->ddestroy)); | |
148 | ||
149 | if (bo->ttm) | |
150 | ttm_tt_destroy(bo->ttm); | |
a987fcaa | 151 | atomic_dec(&bo->glob->bo_count); |
5e338405 ML |
152 | if (bo->resv == &bo->ttm_resv) |
153 | reservation_object_fini(&bo->ttm_resv); | |
c58f009e | 154 | mutex_destroy(&bo->wu_mutex); |
ba4e7d97 TH |
155 | if (bo->destroy) |
156 | bo->destroy(bo); | |
157 | else { | |
ba4e7d97 TH |
158 | kfree(bo); |
159 | } | |
57de4ba9 | 160 | ttm_mem_global_free(bdev->glob->mem_glob, acc_size); |
ba4e7d97 TH |
161 | } |
162 | ||
d6ea8886 | 163 | void ttm_bo_add_to_lru(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
164 | { |
165 | struct ttm_bo_device *bdev = bo->bdev; | |
166 | struct ttm_mem_type_manager *man; | |
167 | ||
009a9dad | 168 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
169 | |
170 | if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { | |
171 | ||
172 | BUG_ON(!list_empty(&bo->lru)); | |
173 | ||
174 | man = &bdev->man[bo->mem.mem_type]; | |
175 | list_add_tail(&bo->lru, &man->lru); | |
176 | kref_get(&bo->list_kref); | |
177 | ||
178 | if (bo->ttm != NULL) { | |
a987fcaa | 179 | list_add_tail(&bo->swap, &bo->glob->swap_lru); |
ba4e7d97 TH |
180 | kref_get(&bo->list_kref); |
181 | } | |
182 | } | |
183 | } | |
34820324 | 184 | EXPORT_SYMBOL(ttm_bo_add_to_lru); |
ba4e7d97 | 185 | |
d6ea8886 | 186 | int ttm_bo_del_from_lru(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
187 | { |
188 | int put_count = 0; | |
189 | ||
190 | if (!list_empty(&bo->swap)) { | |
191 | list_del_init(&bo->swap); | |
192 | ++put_count; | |
193 | } | |
194 | if (!list_empty(&bo->lru)) { | |
195 | list_del_init(&bo->lru); | |
196 | ++put_count; | |
197 | } | |
198 | ||
199 | /* | |
200 | * TODO: Add a driver hook to delete from | |
201 | * driver-specific LRU's here. | |
202 | */ | |
203 | ||
204 | return put_count; | |
205 | } | |
206 | ||
ba4e7d97 TH |
207 | static void ttm_bo_ref_bug(struct kref *list_kref) |
208 | { | |
209 | BUG(); | |
210 | } | |
211 | ||
d6ea8886 DA |
212 | void ttm_bo_list_ref_sub(struct ttm_buffer_object *bo, int count, |
213 | bool never_free) | |
214 | { | |
2357cbe5 TH |
215 | kref_sub(&bo->list_kref, count, |
216 | (never_free) ? ttm_bo_ref_bug : ttm_bo_release_list); | |
d6ea8886 DA |
217 | } |
218 | ||
34820324 | 219 | void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo) |
5e45d7df | 220 | { |
34820324 | 221 | int put_count; |
ecff665f | 222 | |
34820324 ML |
223 | spin_lock(&bo->glob->lru_lock); |
224 | put_count = ttm_bo_del_from_lru(bo); | |
225 | spin_unlock(&bo->glob->lru_lock); | |
226 | ttm_bo_list_ref_sub(bo, put_count, true); | |
ecff665f | 227 | } |
34820324 | 228 | EXPORT_SYMBOL(ttm_bo_del_sub_from_lru); |
ecff665f | 229 | |
ba4e7d97 TH |
230 | /* |
231 | * Call bo->mutex locked. | |
232 | */ | |
ba4e7d97 TH |
233 | static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc) |
234 | { | |
235 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 236 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 TH |
237 | int ret = 0; |
238 | uint32_t page_flags = 0; | |
239 | ||
240 | TTM_ASSERT_LOCKED(&bo->mutex); | |
241 | bo->ttm = NULL; | |
242 | ||
ad49f501 DA |
243 | if (bdev->need_dma32) |
244 | page_flags |= TTM_PAGE_FLAG_DMA32; | |
245 | ||
ba4e7d97 TH |
246 | switch (bo->type) { |
247 | case ttm_bo_type_device: | |
248 | if (zero_alloc) | |
249 | page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC; | |
250 | case ttm_bo_type_kernel: | |
649bf3ca JG |
251 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, |
252 | page_flags, glob->dummy_read_page); | |
ba4e7d97 TH |
253 | if (unlikely(bo->ttm == NULL)) |
254 | ret = -ENOMEM; | |
255 | break; | |
129b78bf DA |
256 | case ttm_bo_type_sg: |
257 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, | |
258 | page_flags | TTM_PAGE_FLAG_SG, | |
259 | glob->dummy_read_page); | |
260 | if (unlikely(bo->ttm == NULL)) { | |
261 | ret = -ENOMEM; | |
262 | break; | |
263 | } | |
264 | bo->ttm->sg = bo->sg; | |
265 | break; | |
ba4e7d97 | 266 | default: |
25d0479a | 267 | pr_err("Illegal buffer object type\n"); |
ba4e7d97 TH |
268 | ret = -EINVAL; |
269 | break; | |
270 | } | |
271 | ||
272 | return ret; | |
273 | } | |
274 | ||
275 | static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo, | |
276 | struct ttm_mem_reg *mem, | |
9d87fa21 | 277 | bool evict, bool interruptible, |
97a875cb | 278 | bool no_wait_gpu) |
ba4e7d97 TH |
279 | { |
280 | struct ttm_bo_device *bdev = bo->bdev; | |
281 | bool old_is_pci = ttm_mem_reg_is_pci(bdev, &bo->mem); | |
282 | bool new_is_pci = ttm_mem_reg_is_pci(bdev, mem); | |
283 | struct ttm_mem_type_manager *old_man = &bdev->man[bo->mem.mem_type]; | |
284 | struct ttm_mem_type_manager *new_man = &bdev->man[mem->mem_type]; | |
285 | int ret = 0; | |
286 | ||
287 | if (old_is_pci || new_is_pci || | |
eba67093 TH |
288 | ((mem->placement & bo->mem.placement & TTM_PL_MASK_CACHING) == 0)) { |
289 | ret = ttm_mem_io_lock(old_man, true); | |
290 | if (unlikely(ret != 0)) | |
291 | goto out_err; | |
292 | ttm_bo_unmap_virtual_locked(bo); | |
293 | ttm_mem_io_unlock(old_man); | |
294 | } | |
ba4e7d97 TH |
295 | |
296 | /* | |
297 | * Create and bind a ttm if required. | |
298 | */ | |
299 | ||
8d3bb236 BS |
300 | if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) { |
301 | if (bo->ttm == NULL) { | |
ff02b13f BS |
302 | bool zero = !(old_man->flags & TTM_MEMTYPE_FLAG_FIXED); |
303 | ret = ttm_bo_add_ttm(bo, zero); | |
8d3bb236 BS |
304 | if (ret) |
305 | goto out_err; | |
306 | } | |
ba4e7d97 TH |
307 | |
308 | ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement); | |
309 | if (ret) | |
87ef9209 | 310 | goto out_err; |
ba4e7d97 TH |
311 | |
312 | if (mem->mem_type != TTM_PL_SYSTEM) { | |
313 | ret = ttm_tt_bind(bo->ttm, mem); | |
314 | if (ret) | |
315 | goto out_err; | |
316 | } | |
317 | ||
318 | if (bo->mem.mem_type == TTM_PL_SYSTEM) { | |
82ef594e BS |
319 | if (bdev->driver->move_notify) |
320 | bdev->driver->move_notify(bo, mem); | |
ca262a99 | 321 | bo->mem = *mem; |
ba4e7d97 | 322 | mem->mm_node = NULL; |
ba4e7d97 TH |
323 | goto moved; |
324 | } | |
ba4e7d97 TH |
325 | } |
326 | ||
9f1feed2 BS |
327 | if (bdev->driver->move_notify) |
328 | bdev->driver->move_notify(bo, mem); | |
329 | ||
ba4e7d97 TH |
330 | if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
331 | !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) | |
97a875cb | 332 | ret = ttm_bo_move_ttm(bo, evict, no_wait_gpu, mem); |
ba4e7d97 TH |
333 | else if (bdev->driver->move) |
334 | ret = bdev->driver->move(bo, evict, interruptible, | |
97a875cb | 335 | no_wait_gpu, mem); |
ba4e7d97 | 336 | else |
97a875cb | 337 | ret = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, mem); |
ba4e7d97 | 338 | |
9f1feed2 BS |
339 | if (ret) { |
340 | if (bdev->driver->move_notify) { | |
341 | struct ttm_mem_reg tmp_mem = *mem; | |
342 | *mem = bo->mem; | |
343 | bo->mem = tmp_mem; | |
344 | bdev->driver->move_notify(bo, mem); | |
345 | bo->mem = *mem; | |
014b3440 | 346 | *mem = tmp_mem; |
9f1feed2 | 347 | } |
ba4e7d97 | 348 | |
9f1feed2 BS |
349 | goto out_err; |
350 | } | |
dc97b340 | 351 | |
ba4e7d97 TH |
352 | moved: |
353 | if (bo->evicted) { | |
9ef7506f RC |
354 | if (bdev->driver->invalidate_caches) { |
355 | ret = bdev->driver->invalidate_caches(bdev, bo->mem.placement); | |
356 | if (ret) | |
357 | pr_err("Can not flush read caches\n"); | |
358 | } | |
ba4e7d97 TH |
359 | bo->evicted = false; |
360 | } | |
361 | ||
362 | if (bo->mem.mm_node) { | |
d961db75 | 363 | bo->offset = (bo->mem.start << PAGE_SHIFT) + |
ba4e7d97 TH |
364 | bdev->man[bo->mem.mem_type].gpu_offset; |
365 | bo->cur_placement = bo->mem.placement; | |
354fb52c TH |
366 | } else |
367 | bo->offset = 0; | |
ba4e7d97 TH |
368 | |
369 | return 0; | |
370 | ||
371 | out_err: | |
372 | new_man = &bdev->man[bo->mem.mem_type]; | |
373 | if ((new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && bo->ttm) { | |
374 | ttm_tt_unbind(bo->ttm); | |
375 | ttm_tt_destroy(bo->ttm); | |
376 | bo->ttm = NULL; | |
377 | } | |
378 | ||
379 | return ret; | |
380 | } | |
381 | ||
1df6a2eb | 382 | /** |
40d857bb | 383 | * Call bo::reserved. |
1df6a2eb | 384 | * Will release GPU memory type usage on destruction. |
40d857bb TH |
385 | * This is the place to put in driver specific hooks to release |
386 | * driver private resources. | |
387 | * Will release the bo::reserved lock. | |
1df6a2eb TH |
388 | */ |
389 | ||
390 | static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo) | |
391 | { | |
dc97b340 JG |
392 | if (bo->bdev->driver->move_notify) |
393 | bo->bdev->driver->move_notify(bo, NULL); | |
394 | ||
1df6a2eb | 395 | if (bo->ttm) { |
1df6a2eb TH |
396 | ttm_tt_unbind(bo->ttm); |
397 | ttm_tt_destroy(bo->ttm); | |
398 | bo->ttm = NULL; | |
1df6a2eb | 399 | } |
40d857bb | 400 | ttm_bo_mem_put(bo, &bo->mem); |
1df6a2eb | 401 | |
5e338405 | 402 | ww_mutex_unlock (&bo->resv->lock); |
1df6a2eb TH |
403 | } |
404 | ||
e1efc9b6 | 405 | static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
406 | { |
407 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 408 | struct ttm_bo_global *glob = bo->glob; |
4154f051 | 409 | struct ttm_bo_driver *driver = bdev->driver; |
aa123268 | 410 | void *sync_obj = NULL; |
e1efc9b6 | 411 | int put_count; |
ba4e7d97 TH |
412 | int ret; |
413 | ||
4154f051 | 414 | spin_lock(&glob->lru_lock); |
0eff2a24 | 415 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
4154f051 | 416 | |
702adba2 | 417 | spin_lock(&bdev->fence_lock); |
1717c0e2 | 418 | (void) ttm_bo_wait(bo, false, false, true); |
4154f051 | 419 | if (!ret && !bo->sync_obj) { |
702adba2 | 420 | spin_unlock(&bdev->fence_lock); |
1df6a2eb | 421 | put_count = ttm_bo_del_from_lru(bo); |
ba4e7d97 | 422 | |
40d857bb | 423 | spin_unlock(&glob->lru_lock); |
1df6a2eb | 424 | ttm_bo_cleanup_memtype_use(bo); |
ba4e7d97 | 425 | |
d6ea8886 | 426 | ttm_bo_list_ref_sub(bo, put_count, true); |
ba4e7d97 | 427 | |
e1efc9b6 | 428 | return; |
ba4e7d97 | 429 | } |
aa123268 TH |
430 | if (bo->sync_obj) |
431 | sync_obj = driver->sync_obj_ref(bo->sync_obj); | |
4154f051 ML |
432 | spin_unlock(&bdev->fence_lock); |
433 | ||
15205fbc TH |
434 | if (!ret) { |
435 | ||
436 | /* | |
437 | * Make NO_EVICT bos immediately available to | |
438 | * shrinkers, now that they are queued for | |
439 | * destruction. | |
440 | */ | |
441 | if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT) { | |
442 | bo->mem.placement &= ~TTM_PL_FLAG_NO_EVICT; | |
443 | ttm_bo_add_to_lru(bo); | |
444 | } | |
445 | ||
c7523083 | 446 | __ttm_bo_unreserve(bo); |
15205fbc | 447 | } |
e1efc9b6 TH |
448 | |
449 | kref_get(&bo->list_kref); | |
450 | list_add_tail(&bo->ddestroy, &bdev->ddestroy); | |
451 | spin_unlock(&glob->lru_lock); | |
e1efc9b6 | 452 | |
aa123268 | 453 | if (sync_obj) { |
dedfdffd | 454 | driver->sync_obj_flush(sync_obj); |
aa123268 TH |
455 | driver->sync_obj_unref(&sync_obj); |
456 | } | |
e1efc9b6 TH |
457 | schedule_delayed_work(&bdev->wq, |
458 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
459 | } | |
460 | ||
461 | /** | |
85b144f8 | 462 | * function ttm_bo_cleanup_refs_and_unlock |
e1efc9b6 TH |
463 | * If bo idle, remove from delayed- and lru lists, and unref. |
464 | * If not idle, do nothing. | |
465 | * | |
85b144f8 ML |
466 | * Must be called with lru_lock and reservation held, this function |
467 | * will drop both before returning. | |
468 | * | |
e1efc9b6 | 469 | * @interruptible Any sleeps should occur interruptibly. |
e1efc9b6 TH |
470 | * @no_wait_gpu Never wait for gpu. Return -EBUSY instead. |
471 | */ | |
472 | ||
85b144f8 ML |
473 | static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, |
474 | bool interruptible, | |
475 | bool no_wait_gpu) | |
e1efc9b6 | 476 | { |
702adba2 | 477 | struct ttm_bo_device *bdev = bo->bdev; |
85b144f8 | 478 | struct ttm_bo_driver *driver = bdev->driver; |
e1efc9b6 TH |
479 | struct ttm_bo_global *glob = bo->glob; |
480 | int put_count; | |
85b144f8 | 481 | int ret; |
e1efc9b6 | 482 | |
702adba2 | 483 | spin_lock(&bdev->fence_lock); |
85b144f8 | 484 | ret = ttm_bo_wait(bo, false, false, true); |
e1efc9b6 | 485 | |
85b144f8 ML |
486 | if (ret && !no_wait_gpu) { |
487 | void *sync_obj; | |
e1efc9b6 | 488 | |
85b144f8 ML |
489 | /* |
490 | * Take a reference to the fence and unreserve, | |
491 | * at this point the buffer should be dead, so | |
492 | * no new sync objects can be attached. | |
493 | */ | |
0953e76e | 494 | sync_obj = driver->sync_obj_ref(bo->sync_obj); |
85b144f8 | 495 | spin_unlock(&bdev->fence_lock); |
26cc40a8 | 496 | |
c7523083 | 497 | __ttm_bo_unreserve(bo); |
26cc40a8 | 498 | spin_unlock(&glob->lru_lock); |
26cc40a8 | 499 | |
85b144f8 ML |
500 | ret = driver->sync_obj_wait(sync_obj, false, interruptible); |
501 | driver->sync_obj_unref(&sync_obj); | |
502 | if (ret) | |
b8e902f2 TH |
503 | return ret; |
504 | ||
85b144f8 ML |
505 | /* |
506 | * remove sync_obj with ttm_bo_wait, the wait should be | |
507 | * finished, and no new wait object should have been added. | |
508 | */ | |
509 | spin_lock(&bdev->fence_lock); | |
510 | ret = ttm_bo_wait(bo, false, false, true); | |
511 | WARN_ON(ret); | |
512 | spin_unlock(&bdev->fence_lock); | |
513 | if (ret) | |
514 | return ret; | |
ba4e7d97 | 515 | |
85b144f8 | 516 | spin_lock(&glob->lru_lock); |
0eff2a24 | 517 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
b8e902f2 | 518 | |
85b144f8 ML |
519 | /* |
520 | * We raced, and lost, someone else holds the reservation now, | |
521 | * and is probably busy in ttm_bo_cleanup_memtype_use. | |
522 | * | |
523 | * Even if it's not the case, because we finished waiting any | |
524 | * delayed destruction would succeed, so just return success | |
525 | * here. | |
526 | */ | |
527 | if (ret) { | |
528 | spin_unlock(&glob->lru_lock); | |
529 | return 0; | |
530 | } | |
531 | } else | |
532 | spin_unlock(&bdev->fence_lock); | |
ba4e7d97 | 533 | |
85b144f8 | 534 | if (ret || unlikely(list_empty(&bo->ddestroy))) { |
c7523083 | 535 | __ttm_bo_unreserve(bo); |
a987fcaa | 536 | spin_unlock(&glob->lru_lock); |
85b144f8 | 537 | return ret; |
ba4e7d97 TH |
538 | } |
539 | ||
e1efc9b6 TH |
540 | put_count = ttm_bo_del_from_lru(bo); |
541 | list_del_init(&bo->ddestroy); | |
542 | ++put_count; | |
543 | ||
544 | spin_unlock(&glob->lru_lock); | |
545 | ttm_bo_cleanup_memtype_use(bo); | |
546 | ||
d6ea8886 | 547 | ttm_bo_list_ref_sub(bo, put_count, true); |
e1efc9b6 TH |
548 | |
549 | return 0; | |
ba4e7d97 TH |
550 | } |
551 | ||
552 | /** | |
553 | * Traverse the delayed list, and call ttm_bo_cleanup_refs on all | |
554 | * encountered buffers. | |
555 | */ | |
556 | ||
557 | static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) | |
558 | { | |
a987fcaa | 559 | struct ttm_bo_global *glob = bdev->glob; |
1a961ce0 LB |
560 | struct ttm_buffer_object *entry = NULL; |
561 | int ret = 0; | |
ba4e7d97 | 562 | |
a987fcaa | 563 | spin_lock(&glob->lru_lock); |
1a961ce0 LB |
564 | if (list_empty(&bdev->ddestroy)) |
565 | goto out_unlock; | |
566 | ||
567 | entry = list_first_entry(&bdev->ddestroy, | |
568 | struct ttm_buffer_object, ddestroy); | |
569 | kref_get(&entry->list_kref); | |
570 | ||
571 | for (;;) { | |
572 | struct ttm_buffer_object *nentry = NULL; | |
573 | ||
574 | if (entry->ddestroy.next != &bdev->ddestroy) { | |
575 | nentry = list_first_entry(&entry->ddestroy, | |
576 | struct ttm_buffer_object, ddestroy); | |
ba4e7d97 TH |
577 | kref_get(&nentry->list_kref); |
578 | } | |
ba4e7d97 | 579 | |
0eff2a24 | 580 | ret = __ttm_bo_reserve(entry, false, true, false, NULL); |
63d0a419 ML |
581 | if (remove_all && ret) { |
582 | spin_unlock(&glob->lru_lock); | |
c7523083 | 583 | ret = __ttm_bo_reserve(entry, false, false, |
0eff2a24 | 584 | false, NULL); |
63d0a419 ML |
585 | spin_lock(&glob->lru_lock); |
586 | } | |
587 | ||
85b144f8 ML |
588 | if (!ret) |
589 | ret = ttm_bo_cleanup_refs_and_unlock(entry, false, | |
590 | !remove_all); | |
591 | else | |
592 | spin_unlock(&glob->lru_lock); | |
593 | ||
ba4e7d97 | 594 | kref_put(&entry->list_kref, ttm_bo_release_list); |
1a961ce0 LB |
595 | entry = nentry; |
596 | ||
597 | if (ret || !entry) | |
598 | goto out; | |
ba4e7d97 | 599 | |
a987fcaa | 600 | spin_lock(&glob->lru_lock); |
1a961ce0 | 601 | if (list_empty(&entry->ddestroy)) |
ba4e7d97 TH |
602 | break; |
603 | } | |
ba4e7d97 | 604 | |
1a961ce0 LB |
605 | out_unlock: |
606 | spin_unlock(&glob->lru_lock); | |
607 | out: | |
608 | if (entry) | |
609 | kref_put(&entry->list_kref, ttm_bo_release_list); | |
ba4e7d97 TH |
610 | return ret; |
611 | } | |
612 | ||
613 | static void ttm_bo_delayed_workqueue(struct work_struct *work) | |
614 | { | |
615 | struct ttm_bo_device *bdev = | |
616 | container_of(work, struct ttm_bo_device, wq.work); | |
617 | ||
618 | if (ttm_bo_delayed_delete(bdev, false)) { | |
619 | schedule_delayed_work(&bdev->wq, | |
620 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
621 | } | |
622 | } | |
623 | ||
624 | static void ttm_bo_release(struct kref *kref) | |
625 | { | |
626 | struct ttm_buffer_object *bo = | |
627 | container_of(kref, struct ttm_buffer_object, kref); | |
628 | struct ttm_bo_device *bdev = bo->bdev; | |
eba67093 | 629 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; |
ba4e7d97 | 630 | |
72525b3f | 631 | drm_vma_offset_remove(&bdev->vma_manager, &bo->vma_node); |
eba67093 TH |
632 | ttm_mem_io_lock(man, false); |
633 | ttm_mem_io_free_vm(bo); | |
634 | ttm_mem_io_unlock(man); | |
e1efc9b6 | 635 | ttm_bo_cleanup_refs_or_queue(bo); |
ba4e7d97 | 636 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
637 | } |
638 | ||
639 | void ttm_bo_unref(struct ttm_buffer_object **p_bo) | |
640 | { | |
641 | struct ttm_buffer_object *bo = *p_bo; | |
ba4e7d97 TH |
642 | |
643 | *p_bo = NULL; | |
ba4e7d97 | 644 | kref_put(&bo->kref, ttm_bo_release); |
ba4e7d97 TH |
645 | } |
646 | EXPORT_SYMBOL(ttm_bo_unref); | |
647 | ||
7c5ee536 MG |
648 | int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev) |
649 | { | |
650 | return cancel_delayed_work_sync(&bdev->wq); | |
651 | } | |
652 | EXPORT_SYMBOL(ttm_bo_lock_delayed_workqueue); | |
653 | ||
654 | void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched) | |
655 | { | |
656 | if (resched) | |
657 | schedule_delayed_work(&bdev->wq, | |
658 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
659 | } | |
660 | EXPORT_SYMBOL(ttm_bo_unlock_delayed_workqueue); | |
661 | ||
ca262a99 | 662 | static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible, |
97a875cb | 663 | bool no_wait_gpu) |
ba4e7d97 | 664 | { |
ba4e7d97 TH |
665 | struct ttm_bo_device *bdev = bo->bdev; |
666 | struct ttm_mem_reg evict_mem; | |
ca262a99 JG |
667 | struct ttm_placement placement; |
668 | int ret = 0; | |
ba4e7d97 | 669 | |
702adba2 | 670 | spin_lock(&bdev->fence_lock); |
1717c0e2 | 671 | ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); |
702adba2 | 672 | spin_unlock(&bdev->fence_lock); |
ba4e7d97 | 673 | |
78ecf091 | 674 | if (unlikely(ret != 0)) { |
98ffc415 | 675 | if (ret != -ERESTARTSYS) { |
25d0479a | 676 | pr_err("Failed to expire sync object before buffer eviction\n"); |
78ecf091 | 677 | } |
ba4e7d97 TH |
678 | goto out; |
679 | } | |
680 | ||
009a9dad | 681 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
682 | |
683 | evict_mem = bo->mem; | |
684 | evict_mem.mm_node = NULL; | |
eba67093 TH |
685 | evict_mem.bus.io_reserved_vm = false; |
686 | evict_mem.bus.io_reserved_count = 0; | |
ba4e7d97 | 687 | |
7cb7d1d7 JG |
688 | placement.fpfn = 0; |
689 | placement.lpfn = 0; | |
690 | placement.num_placement = 0; | |
691 | placement.num_busy_placement = 0; | |
ca262a99 JG |
692 | bdev->driver->evict_flags(bo, &placement); |
693 | ret = ttm_bo_mem_space(bo, &placement, &evict_mem, interruptible, | |
97a875cb | 694 | no_wait_gpu); |
ba4e7d97 | 695 | if (ret) { |
fb53f862 | 696 | if (ret != -ERESTARTSYS) { |
25d0479a JP |
697 | pr_err("Failed to find memory space for buffer 0x%p eviction\n", |
698 | bo); | |
fb53f862 JG |
699 | ttm_bo_mem_space_debug(bo, &placement); |
700 | } | |
ba4e7d97 TH |
701 | goto out; |
702 | } | |
703 | ||
704 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, interruptible, | |
97a875cb | 705 | no_wait_gpu); |
ba4e7d97 | 706 | if (ret) { |
98ffc415 | 707 | if (ret != -ERESTARTSYS) |
25d0479a | 708 | pr_err("Buffer eviction failed\n"); |
42311ff9 | 709 | ttm_bo_mem_put(bo, &evict_mem); |
ba4e7d97 TH |
710 | goto out; |
711 | } | |
ca262a99 JG |
712 | bo->evicted = true; |
713 | out: | |
714 | return ret; | |
715 | } | |
716 | ||
717 | static int ttm_mem_evict_first(struct ttm_bo_device *bdev, | |
718 | uint32_t mem_type, | |
97a875cb | 719 | bool interruptible, |
9d87fa21 | 720 | bool no_wait_gpu) |
ca262a99 JG |
721 | { |
722 | struct ttm_bo_global *glob = bdev->glob; | |
723 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
724 | struct ttm_buffer_object *bo; | |
e7ab2019 | 725 | int ret = -EBUSY, put_count; |
ba4e7d97 | 726 | |
a987fcaa | 727 | spin_lock(&glob->lru_lock); |
e7ab2019 | 728 | list_for_each_entry(bo, &man->lru, lru) { |
0eff2a24 | 729 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
e7ab2019 ML |
730 | if (!ret) |
731 | break; | |
732 | } | |
733 | ||
734 | if (ret) { | |
9c51ba1d | 735 | spin_unlock(&glob->lru_lock); |
e7ab2019 | 736 | return ret; |
9c51ba1d TH |
737 | } |
738 | ||
ca262a99 | 739 | kref_get(&bo->list_kref); |
9c51ba1d | 740 | |
e1efc9b6 | 741 | if (!list_empty(&bo->ddestroy)) { |
e7ab2019 ML |
742 | ret = ttm_bo_cleanup_refs_and_unlock(bo, interruptible, |
743 | no_wait_gpu); | |
e1efc9b6 | 744 | kref_put(&bo->list_kref, ttm_bo_release_list); |
b8e902f2 | 745 | return ret; |
e1efc9b6 TH |
746 | } |
747 | ||
9c51ba1d | 748 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 749 | spin_unlock(&glob->lru_lock); |
9c51ba1d TH |
750 | |
751 | BUG_ON(ret != 0); | |
752 | ||
d6ea8886 | 753 | ttm_bo_list_ref_sub(bo, put_count, true); |
9c51ba1d | 754 | |
97a875cb | 755 | ret = ttm_bo_evict(bo, interruptible, no_wait_gpu); |
ca262a99 | 756 | ttm_bo_unreserve(bo); |
9c51ba1d | 757 | |
ca262a99 | 758 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
759 | return ret; |
760 | } | |
761 | ||
42311ff9 BS |
762 | void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem) |
763 | { | |
d961db75 | 764 | struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type]; |
42311ff9 | 765 | |
d961db75 BS |
766 | if (mem->mm_node) |
767 | (*man->func->put_node)(man, mem); | |
42311ff9 BS |
768 | } |
769 | EXPORT_SYMBOL(ttm_bo_mem_put); | |
770 | ||
ba4e7d97 TH |
771 | /** |
772 | * Repeatedly evict memory from the LRU for @mem_type until we create enough | |
773 | * space, or we've evicted everything and there isn't enough space. | |
774 | */ | |
ca262a99 JG |
775 | static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, |
776 | uint32_t mem_type, | |
777 | struct ttm_placement *placement, | |
778 | struct ttm_mem_reg *mem, | |
9d87fa21 | 779 | bool interruptible, |
9d87fa21 | 780 | bool no_wait_gpu) |
ba4e7d97 | 781 | { |
ca262a99 | 782 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 | 783 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
ba4e7d97 TH |
784 | int ret; |
785 | ||
ba4e7d97 | 786 | do { |
e3f20279 | 787 | ret = (*man->func->get_node)(man, bo, placement, 0, mem); |
ca262a99 JG |
788 | if (unlikely(ret != 0)) |
789 | return ret; | |
d961db75 | 790 | if (mem->mm_node) |
ba4e7d97 | 791 | break; |
97a875cb ML |
792 | ret = ttm_mem_evict_first(bdev, mem_type, |
793 | interruptible, no_wait_gpu); | |
ba4e7d97 TH |
794 | if (unlikely(ret != 0)) |
795 | return ret; | |
ba4e7d97 | 796 | } while (1); |
d961db75 | 797 | if (mem->mm_node == NULL) |
ba4e7d97 | 798 | return -ENOMEM; |
ba4e7d97 TH |
799 | mem->mem_type = mem_type; |
800 | return 0; | |
801 | } | |
802 | ||
ae3e8122 TH |
803 | static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man, |
804 | uint32_t cur_placement, | |
805 | uint32_t proposed_placement) | |
806 | { | |
807 | uint32_t caching = proposed_placement & TTM_PL_MASK_CACHING; | |
808 | uint32_t result = proposed_placement & ~TTM_PL_MASK_CACHING; | |
809 | ||
810 | /** | |
811 | * Keep current caching if possible. | |
812 | */ | |
813 | ||
814 | if ((cur_placement & caching) != 0) | |
815 | result |= (cur_placement & caching); | |
816 | else if ((man->default_caching & caching) != 0) | |
817 | result |= man->default_caching; | |
818 | else if ((TTM_PL_FLAG_CACHED & caching) != 0) | |
819 | result |= TTM_PL_FLAG_CACHED; | |
820 | else if ((TTM_PL_FLAG_WC & caching) != 0) | |
821 | result |= TTM_PL_FLAG_WC; | |
822 | else if ((TTM_PL_FLAG_UNCACHED & caching) != 0) | |
823 | result |= TTM_PL_FLAG_UNCACHED; | |
824 | ||
825 | return result; | |
826 | } | |
827 | ||
ba4e7d97 | 828 | static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man, |
ba4e7d97 | 829 | uint32_t mem_type, |
ae3e8122 TH |
830 | uint32_t proposed_placement, |
831 | uint32_t *masked_placement) | |
ba4e7d97 TH |
832 | { |
833 | uint32_t cur_flags = ttm_bo_type_flags(mem_type); | |
834 | ||
ae3e8122 | 835 | if ((cur_flags & proposed_placement & TTM_PL_MASK_MEM) == 0) |
ba4e7d97 TH |
836 | return false; |
837 | ||
ae3e8122 | 838 | if ((proposed_placement & man->available_caching) == 0) |
ba4e7d97 | 839 | return false; |
ba4e7d97 | 840 | |
ae3e8122 TH |
841 | cur_flags |= (proposed_placement & man->available_caching); |
842 | ||
843 | *masked_placement = cur_flags; | |
ba4e7d97 TH |
844 | return true; |
845 | } | |
846 | ||
847 | /** | |
848 | * Creates space for memory region @mem according to its type. | |
849 | * | |
850 | * This function first searches for free space in compatible memory types in | |
851 | * the priority order defined by the driver. If free space isn't found, then | |
852 | * ttm_bo_mem_force_space is attempted in priority order to evict and find | |
853 | * space. | |
854 | */ | |
855 | int ttm_bo_mem_space(struct ttm_buffer_object *bo, | |
ca262a99 JG |
856 | struct ttm_placement *placement, |
857 | struct ttm_mem_reg *mem, | |
97a875cb | 858 | bool interruptible, |
9d87fa21 | 859 | bool no_wait_gpu) |
ba4e7d97 TH |
860 | { |
861 | struct ttm_bo_device *bdev = bo->bdev; | |
862 | struct ttm_mem_type_manager *man; | |
ba4e7d97 TH |
863 | uint32_t mem_type = TTM_PL_SYSTEM; |
864 | uint32_t cur_flags = 0; | |
865 | bool type_found = false; | |
866 | bool type_ok = false; | |
98ffc415 | 867 | bool has_erestartsys = false; |
ca262a99 | 868 | int i, ret; |
ba4e7d97 TH |
869 | |
870 | mem->mm_node = NULL; | |
b6637526 | 871 | for (i = 0; i < placement->num_placement; ++i) { |
ca262a99 JG |
872 | ret = ttm_mem_type_from_flags(placement->placement[i], |
873 | &mem_type); | |
874 | if (ret) | |
875 | return ret; | |
ba4e7d97 TH |
876 | man = &bdev->man[mem_type]; |
877 | ||
878 | type_ok = ttm_bo_mt_compatible(man, | |
ca262a99 JG |
879 | mem_type, |
880 | placement->placement[i], | |
881 | &cur_flags); | |
ba4e7d97 TH |
882 | |
883 | if (!type_ok) | |
884 | continue; | |
885 | ||
ae3e8122 TH |
886 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
887 | cur_flags); | |
ca262a99 JG |
888 | /* |
889 | * Use the access and other non-mapping-related flag bits from | |
890 | * the memory placement flags to the current flags | |
891 | */ | |
892 | ttm_flag_masked(&cur_flags, placement->placement[i], | |
893 | ~TTM_PL_MASK_MEMTYPE); | |
ae3e8122 | 894 | |
ba4e7d97 TH |
895 | if (mem_type == TTM_PL_SYSTEM) |
896 | break; | |
897 | ||
898 | if (man->has_type && man->use_type) { | |
899 | type_found = true; | |
e3f20279 CK |
900 | ret = (*man->func->get_node)(man, bo, placement, |
901 | cur_flags, mem); | |
ca262a99 JG |
902 | if (unlikely(ret)) |
903 | return ret; | |
ba4e7d97 | 904 | } |
d961db75 | 905 | if (mem->mm_node) |
ba4e7d97 TH |
906 | break; |
907 | } | |
908 | ||
d961db75 | 909 | if ((type_ok && (mem_type == TTM_PL_SYSTEM)) || mem->mm_node) { |
ba4e7d97 TH |
910 | mem->mem_type = mem_type; |
911 | mem->placement = cur_flags; | |
912 | return 0; | |
913 | } | |
914 | ||
915 | if (!type_found) | |
916 | return -EINVAL; | |
917 | ||
b6637526 DA |
918 | for (i = 0; i < placement->num_busy_placement; ++i) { |
919 | ret = ttm_mem_type_from_flags(placement->busy_placement[i], | |
ca262a99 JG |
920 | &mem_type); |
921 | if (ret) | |
922 | return ret; | |
ba4e7d97 | 923 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
924 | if (!man->has_type) |
925 | continue; | |
ba4e7d97 | 926 | if (!ttm_bo_mt_compatible(man, |
ca262a99 | 927 | mem_type, |
b6637526 | 928 | placement->busy_placement[i], |
ca262a99 | 929 | &cur_flags)) |
ba4e7d97 TH |
930 | continue; |
931 | ||
ae3e8122 TH |
932 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
933 | cur_flags); | |
ca262a99 JG |
934 | /* |
935 | * Use the access and other non-mapping-related flag bits from | |
936 | * the memory placement flags to the current flags | |
937 | */ | |
b6637526 | 938 | ttm_flag_masked(&cur_flags, placement->busy_placement[i], |
ca262a99 | 939 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 940 | |
0eaddb28 TH |
941 | if (mem_type == TTM_PL_SYSTEM) { |
942 | mem->mem_type = mem_type; | |
943 | mem->placement = cur_flags; | |
944 | mem->mm_node = NULL; | |
945 | return 0; | |
946 | } | |
947 | ||
ca262a99 | 948 | ret = ttm_bo_mem_force_space(bo, mem_type, placement, mem, |
97a875cb | 949 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
950 | if (ret == 0 && mem->mm_node) { |
951 | mem->placement = cur_flags; | |
952 | return 0; | |
953 | } | |
98ffc415 TH |
954 | if (ret == -ERESTARTSYS) |
955 | has_erestartsys = true; | |
ba4e7d97 | 956 | } |
98ffc415 | 957 | ret = (has_erestartsys) ? -ERESTARTSYS : -ENOMEM; |
ba4e7d97 TH |
958 | return ret; |
959 | } | |
960 | EXPORT_SYMBOL(ttm_bo_mem_space); | |
961 | ||
6e87fa48 | 962 | static int ttm_bo_move_buffer(struct ttm_buffer_object *bo, |
ca262a99 | 963 | struct ttm_placement *placement, |
97a875cb | 964 | bool interruptible, |
9d87fa21 | 965 | bool no_wait_gpu) |
ba4e7d97 | 966 | { |
ba4e7d97 TH |
967 | int ret = 0; |
968 | struct ttm_mem_reg mem; | |
702adba2 | 969 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 | 970 | |
009a9dad | 971 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
972 | |
973 | /* | |
974 | * FIXME: It's possible to pipeline buffer moves. | |
975 | * Have the driver move function wait for idle when necessary, | |
976 | * instead of doing it here. | |
977 | */ | |
702adba2 | 978 | spin_lock(&bdev->fence_lock); |
1717c0e2 | 979 | ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); |
702adba2 | 980 | spin_unlock(&bdev->fence_lock); |
ba4e7d97 TH |
981 | if (ret) |
982 | return ret; | |
ba4e7d97 TH |
983 | mem.num_pages = bo->num_pages; |
984 | mem.size = mem.num_pages << PAGE_SHIFT; | |
985 | mem.page_alignment = bo->mem.page_alignment; | |
eba67093 TH |
986 | mem.bus.io_reserved_vm = false; |
987 | mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
988 | /* |
989 | * Determine where to move the buffer. | |
990 | */ | |
97a875cb ML |
991 | ret = ttm_bo_mem_space(bo, placement, &mem, |
992 | interruptible, no_wait_gpu); | |
ba4e7d97 TH |
993 | if (ret) |
994 | goto out_unlock; | |
97a875cb ML |
995 | ret = ttm_bo_handle_move_mem(bo, &mem, false, |
996 | interruptible, no_wait_gpu); | |
ba4e7d97 | 997 | out_unlock: |
d961db75 BS |
998 | if (ret && mem.mm_node) |
999 | ttm_bo_mem_put(bo, &mem); | |
ba4e7d97 TH |
1000 | return ret; |
1001 | } | |
1002 | ||
59c8e663 TH |
1003 | static bool ttm_bo_mem_compat(struct ttm_placement *placement, |
1004 | struct ttm_mem_reg *mem, | |
1005 | uint32_t *new_flags) | |
ba4e7d97 | 1006 | { |
ca262a99 | 1007 | int i; |
e22238ea | 1008 | |
d961db75 BS |
1009 | if (mem->mm_node && placement->lpfn != 0 && |
1010 | (mem->start < placement->fpfn || | |
1011 | mem->start + mem->num_pages > placement->lpfn)) | |
59c8e663 | 1012 | return false; |
ca262a99 JG |
1013 | |
1014 | for (i = 0; i < placement->num_placement; i++) { | |
59c8e663 TH |
1015 | *new_flags = placement->placement[i]; |
1016 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && | |
1017 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1018 | return true; | |
1019 | } | |
1020 | ||
1021 | for (i = 0; i < placement->num_busy_placement; i++) { | |
1022 | *new_flags = placement->busy_placement[i]; | |
1023 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && | |
1024 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1025 | return true; | |
ca262a99 | 1026 | } |
59c8e663 TH |
1027 | |
1028 | return false; | |
ba4e7d97 TH |
1029 | } |
1030 | ||
09855acb JG |
1031 | int ttm_bo_validate(struct ttm_buffer_object *bo, |
1032 | struct ttm_placement *placement, | |
97a875cb | 1033 | bool interruptible, |
9d87fa21 | 1034 | bool no_wait_gpu) |
ba4e7d97 TH |
1035 | { |
1036 | int ret; | |
59c8e663 | 1037 | uint32_t new_flags; |
ba4e7d97 | 1038 | |
009a9dad | 1039 | lockdep_assert_held(&bo->resv->lock.base); |
ca262a99 JG |
1040 | /* Check that range is valid */ |
1041 | if (placement->lpfn || placement->fpfn) | |
1042 | if (placement->fpfn > placement->lpfn || | |
1043 | (placement->lpfn - placement->fpfn) < bo->num_pages) | |
1044 | return -EINVAL; | |
ba4e7d97 TH |
1045 | /* |
1046 | * Check whether we need to move buffer. | |
1047 | */ | |
59c8e663 | 1048 | if (!ttm_bo_mem_compat(placement, &bo->mem, &new_flags)) { |
97a875cb ML |
1049 | ret = ttm_bo_move_buffer(bo, placement, interruptible, |
1050 | no_wait_gpu); | |
ca262a99 | 1051 | if (ret) |
ba4e7d97 | 1052 | return ret; |
ca262a99 JG |
1053 | } else { |
1054 | /* | |
1055 | * Use the access and other non-mapping-related flag bits from | |
1056 | * the compatible memory placement flags to the active flags | |
1057 | */ | |
59c8e663 | 1058 | ttm_flag_masked(&bo->mem.placement, new_flags, |
ca262a99 | 1059 | ~TTM_PL_MASK_MEMTYPE); |
ba4e7d97 | 1060 | } |
ba4e7d97 TH |
1061 | /* |
1062 | * We might need to add a TTM. | |
1063 | */ | |
ba4e7d97 TH |
1064 | if (bo->mem.mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { |
1065 | ret = ttm_bo_add_ttm(bo, true); | |
1066 | if (ret) | |
1067 | return ret; | |
1068 | } | |
ba4e7d97 TH |
1069 | return 0; |
1070 | } | |
09855acb | 1071 | EXPORT_SYMBOL(ttm_bo_validate); |
ba4e7d97 | 1072 | |
09855acb JG |
1073 | int ttm_bo_check_placement(struct ttm_buffer_object *bo, |
1074 | struct ttm_placement *placement) | |
ba4e7d97 | 1075 | { |
29e190e0 TH |
1076 | BUG_ON((placement->fpfn || placement->lpfn) && |
1077 | (bo->mem.num_pages > (placement->lpfn - placement->fpfn))); | |
ba4e7d97 | 1078 | |
ba4e7d97 TH |
1079 | return 0; |
1080 | } | |
1081 | ||
09855acb JG |
1082 | int ttm_bo_init(struct ttm_bo_device *bdev, |
1083 | struct ttm_buffer_object *bo, | |
1084 | unsigned long size, | |
1085 | enum ttm_bo_type type, | |
1086 | struct ttm_placement *placement, | |
1087 | uint32_t page_alignment, | |
09855acb | 1088 | bool interruptible, |
5df23979 | 1089 | struct file *persistent_swap_storage, |
09855acb | 1090 | size_t acc_size, |
129b78bf | 1091 | struct sg_table *sg, |
09855acb | 1092 | void (*destroy) (struct ttm_buffer_object *)) |
ba4e7d97 | 1093 | { |
09855acb | 1094 | int ret = 0; |
ba4e7d97 | 1095 | unsigned long num_pages; |
57de4ba9 | 1096 | struct ttm_mem_global *mem_glob = bdev->glob->mem_glob; |
5e338405 | 1097 | bool locked; |
57de4ba9 JG |
1098 | |
1099 | ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false); | |
1100 | if (ret) { | |
25d0479a | 1101 | pr_err("Out of kernel memory\n"); |
57de4ba9 JG |
1102 | if (destroy) |
1103 | (*destroy)(bo); | |
1104 | else | |
1105 | kfree(bo); | |
1106 | return -ENOMEM; | |
1107 | } | |
ba4e7d97 | 1108 | |
ba4e7d97 TH |
1109 | num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; |
1110 | if (num_pages == 0) { | |
25d0479a | 1111 | pr_err("Illegal buffer object size\n"); |
7dfbbdcf TH |
1112 | if (destroy) |
1113 | (*destroy)(bo); | |
1114 | else | |
1115 | kfree(bo); | |
a393c730 | 1116 | ttm_mem_global_free(mem_glob, acc_size); |
ba4e7d97 TH |
1117 | return -EINVAL; |
1118 | } | |
1119 | bo->destroy = destroy; | |
1120 | ||
ba4e7d97 TH |
1121 | kref_init(&bo->kref); |
1122 | kref_init(&bo->list_kref); | |
1123 | atomic_set(&bo->cpu_writers, 0); | |
ba4e7d97 TH |
1124 | INIT_LIST_HEAD(&bo->lru); |
1125 | INIT_LIST_HEAD(&bo->ddestroy); | |
1126 | INIT_LIST_HEAD(&bo->swap); | |
eba67093 | 1127 | INIT_LIST_HEAD(&bo->io_reserve_lru); |
c58f009e | 1128 | mutex_init(&bo->wu_mutex); |
ba4e7d97 | 1129 | bo->bdev = bdev; |
a987fcaa | 1130 | bo->glob = bdev->glob; |
ba4e7d97 TH |
1131 | bo->type = type; |
1132 | bo->num_pages = num_pages; | |
eb6d2c39 | 1133 | bo->mem.size = num_pages << PAGE_SHIFT; |
ba4e7d97 TH |
1134 | bo->mem.mem_type = TTM_PL_SYSTEM; |
1135 | bo->mem.num_pages = bo->num_pages; | |
1136 | bo->mem.mm_node = NULL; | |
1137 | bo->mem.page_alignment = page_alignment; | |
eba67093 TH |
1138 | bo->mem.bus.io_reserved_vm = false; |
1139 | bo->mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
1140 | bo->priv_flags = 0; |
1141 | bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED); | |
5df23979 | 1142 | bo->persistent_swap_storage = persistent_swap_storage; |
ba4e7d97 | 1143 | bo->acc_size = acc_size; |
129b78bf | 1144 | bo->sg = sg; |
5e338405 ML |
1145 | bo->resv = &bo->ttm_resv; |
1146 | reservation_object_init(bo->resv); | |
a987fcaa | 1147 | atomic_inc(&bo->glob->bo_count); |
72525b3f | 1148 | drm_vma_node_reset(&bo->vma_node); |
ba4e7d97 | 1149 | |
09855acb | 1150 | ret = ttm_bo_check_placement(bo, placement); |
ba4e7d97 | 1151 | |
ba4e7d97 TH |
1152 | /* |
1153 | * For ttm_bo_type_device buffers, allocate | |
1154 | * address space from the device. | |
1155 | */ | |
5e338405 ML |
1156 | if (likely(!ret) && |
1157 | (bo->type == ttm_bo_type_device || | |
1158 | bo->type == ttm_bo_type_sg)) | |
abf19035 DH |
1159 | ret = drm_vma_offset_add(&bdev->vma_manager, &bo->vma_node, |
1160 | bo->mem.num_pages); | |
ba4e7d97 | 1161 | |
5e338405 ML |
1162 | locked = ww_mutex_trylock(&bo->resv->lock); |
1163 | WARN_ON(!locked); | |
ba4e7d97 | 1164 | |
5e338405 ML |
1165 | if (likely(!ret)) |
1166 | ret = ttm_bo_validate(bo, placement, interruptible, false); | |
ba4e7d97 | 1167 | |
ba4e7d97 | 1168 | ttm_bo_unreserve(bo); |
5e338405 ML |
1169 | |
1170 | if (unlikely(ret)) | |
1171 | ttm_bo_unref(&bo); | |
ba4e7d97 TH |
1172 | |
1173 | return ret; | |
1174 | } | |
09855acb | 1175 | EXPORT_SYMBOL(ttm_bo_init); |
ba4e7d97 | 1176 | |
57de4ba9 JG |
1177 | size_t ttm_bo_acc_size(struct ttm_bo_device *bdev, |
1178 | unsigned long bo_size, | |
1179 | unsigned struct_size) | |
ba4e7d97 | 1180 | { |
57de4ba9 JG |
1181 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; |
1182 | size_t size = 0; | |
ba4e7d97 | 1183 | |
57de4ba9 JG |
1184 | size += ttm_round_pot(struct_size); |
1185 | size += PAGE_ALIGN(npages * sizeof(void *)); | |
1186 | size += ttm_round_pot(sizeof(struct ttm_tt)); | |
1187 | return size; | |
ba4e7d97 | 1188 | } |
57de4ba9 JG |
1189 | EXPORT_SYMBOL(ttm_bo_acc_size); |
1190 | ||
1191 | size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev, | |
1192 | unsigned long bo_size, | |
1193 | unsigned struct_size) | |
1194 | { | |
1195 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; | |
1196 | size_t size = 0; | |
1197 | ||
1198 | size += ttm_round_pot(struct_size); | |
1199 | size += PAGE_ALIGN(npages * sizeof(void *)); | |
1200 | size += PAGE_ALIGN(npages * sizeof(dma_addr_t)); | |
1201 | size += ttm_round_pot(sizeof(struct ttm_dma_tt)); | |
1202 | return size; | |
1203 | } | |
1204 | EXPORT_SYMBOL(ttm_bo_dma_acc_size); | |
ba4e7d97 | 1205 | |
09855acb JG |
1206 | int ttm_bo_create(struct ttm_bo_device *bdev, |
1207 | unsigned long size, | |
1208 | enum ttm_bo_type type, | |
1209 | struct ttm_placement *placement, | |
1210 | uint32_t page_alignment, | |
09855acb | 1211 | bool interruptible, |
5df23979 | 1212 | struct file *persistent_swap_storage, |
09855acb | 1213 | struct ttm_buffer_object **p_bo) |
ba4e7d97 TH |
1214 | { |
1215 | struct ttm_buffer_object *bo; | |
57de4ba9 | 1216 | size_t acc_size; |
ca262a99 | 1217 | int ret; |
ba4e7d97 | 1218 | |
ba4e7d97 | 1219 | bo = kzalloc(sizeof(*bo), GFP_KERNEL); |
a393c730 | 1220 | if (unlikely(bo == NULL)) |
ba4e7d97 | 1221 | return -ENOMEM; |
ba4e7d97 | 1222 | |
a393c730 | 1223 | acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct ttm_buffer_object)); |
09855acb | 1224 | ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment, |
0b91c4a1 MS |
1225 | interruptible, persistent_swap_storage, acc_size, |
1226 | NULL, NULL); | |
ba4e7d97 TH |
1227 | if (likely(ret == 0)) |
1228 | *p_bo = bo; | |
1229 | ||
1230 | return ret; | |
1231 | } | |
4d798937 | 1232 | EXPORT_SYMBOL(ttm_bo_create); |
ba4e7d97 | 1233 | |
ba4e7d97 | 1234 | static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, |
ca262a99 | 1235 | unsigned mem_type, bool allow_errors) |
ba4e7d97 | 1236 | { |
ca262a99 | 1237 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
a987fcaa | 1238 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 | 1239 | int ret; |
ba4e7d97 TH |
1240 | |
1241 | /* | |
1242 | * Can't use standard list traversal since we're unlocking. | |
1243 | */ | |
1244 | ||
a987fcaa | 1245 | spin_lock(&glob->lru_lock); |
ca262a99 | 1246 | while (!list_empty(&man->lru)) { |
a987fcaa | 1247 | spin_unlock(&glob->lru_lock); |
97a875cb | 1248 | ret = ttm_mem_evict_first(bdev, mem_type, false, false); |
ca262a99 JG |
1249 | if (ret) { |
1250 | if (allow_errors) { | |
1251 | return ret; | |
1252 | } else { | |
25d0479a | 1253 | pr_err("Cleanup eviction failed\n"); |
ca262a99 JG |
1254 | } |
1255 | } | |
a987fcaa | 1256 | spin_lock(&glob->lru_lock); |
ba4e7d97 | 1257 | } |
a987fcaa | 1258 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
1259 | return 0; |
1260 | } | |
1261 | ||
1262 | int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1263 | { | |
c96e7c7a | 1264 | struct ttm_mem_type_manager *man; |
ba4e7d97 TH |
1265 | int ret = -EINVAL; |
1266 | ||
1267 | if (mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1268 | pr_err("Illegal memory type %d\n", mem_type); |
ba4e7d97 TH |
1269 | return ret; |
1270 | } | |
c96e7c7a | 1271 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
1272 | |
1273 | if (!man->has_type) { | |
25d0479a JP |
1274 | pr_err("Trying to take down uninitialized memory manager type %u\n", |
1275 | mem_type); | |
ba4e7d97 TH |
1276 | return ret; |
1277 | } | |
1278 | ||
1279 | man->use_type = false; | |
1280 | man->has_type = false; | |
1281 | ||
1282 | ret = 0; | |
1283 | if (mem_type > 0) { | |
ca262a99 | 1284 | ttm_bo_force_list_clean(bdev, mem_type, false); |
ba4e7d97 | 1285 | |
d961db75 | 1286 | ret = (*man->func->takedown)(man); |
ba4e7d97 TH |
1287 | } |
1288 | ||
1289 | return ret; | |
1290 | } | |
1291 | EXPORT_SYMBOL(ttm_bo_clean_mm); | |
1292 | ||
1293 | int ttm_bo_evict_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1294 | { | |
1295 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
1296 | ||
1297 | if (mem_type == 0 || mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1298 | pr_err("Illegal memory manager memory type %u\n", mem_type); |
ba4e7d97 TH |
1299 | return -EINVAL; |
1300 | } | |
1301 | ||
1302 | if (!man->has_type) { | |
25d0479a | 1303 | pr_err("Memory type %u has not been initialized\n", mem_type); |
ba4e7d97 TH |
1304 | return 0; |
1305 | } | |
1306 | ||
ca262a99 | 1307 | return ttm_bo_force_list_clean(bdev, mem_type, true); |
ba4e7d97 TH |
1308 | } |
1309 | EXPORT_SYMBOL(ttm_bo_evict_mm); | |
1310 | ||
1311 | int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type, | |
ca262a99 | 1312 | unsigned long p_size) |
ba4e7d97 TH |
1313 | { |
1314 | int ret = -EINVAL; | |
1315 | struct ttm_mem_type_manager *man; | |
1316 | ||
dbc4a5b8 | 1317 | BUG_ON(type >= TTM_NUM_MEM_TYPES); |
ba4e7d97 | 1318 | man = &bdev->man[type]; |
dbc4a5b8 | 1319 | BUG_ON(man->has_type); |
eba67093 TH |
1320 | man->io_reserve_fastpath = true; |
1321 | man->use_io_reserve_lru = false; | |
1322 | mutex_init(&man->io_reserve_mutex); | |
1323 | INIT_LIST_HEAD(&man->io_reserve_lru); | |
ba4e7d97 TH |
1324 | |
1325 | ret = bdev->driver->init_mem_type(bdev, type, man); | |
1326 | if (ret) | |
1327 | return ret; | |
d961db75 | 1328 | man->bdev = bdev; |
ba4e7d97 TH |
1329 | |
1330 | ret = 0; | |
1331 | if (type != TTM_PL_SYSTEM) { | |
d961db75 | 1332 | ret = (*man->func->init)(man, p_size); |
ba4e7d97 TH |
1333 | if (ret) |
1334 | return ret; | |
1335 | } | |
1336 | man->has_type = true; | |
1337 | man->use_type = true; | |
1338 | man->size = p_size; | |
1339 | ||
1340 | INIT_LIST_HEAD(&man->lru); | |
1341 | ||
1342 | return 0; | |
1343 | } | |
1344 | EXPORT_SYMBOL(ttm_bo_init_mm); | |
1345 | ||
a987fcaa TH |
1346 | static void ttm_bo_global_kobj_release(struct kobject *kobj) |
1347 | { | |
1348 | struct ttm_bo_global *glob = | |
1349 | container_of(kobj, struct ttm_bo_global, kobj); | |
1350 | ||
a987fcaa TH |
1351 | ttm_mem_unregister_shrink(glob->mem_glob, &glob->shrink); |
1352 | __free_page(glob->dummy_read_page); | |
1353 | kfree(glob); | |
1354 | } | |
1355 | ||
ba4420c2 | 1356 | void ttm_bo_global_release(struct drm_global_reference *ref) |
a987fcaa TH |
1357 | { |
1358 | struct ttm_bo_global *glob = ref->object; | |
1359 | ||
1360 | kobject_del(&glob->kobj); | |
1361 | kobject_put(&glob->kobj); | |
1362 | } | |
1363 | EXPORT_SYMBOL(ttm_bo_global_release); | |
1364 | ||
ba4420c2 | 1365 | int ttm_bo_global_init(struct drm_global_reference *ref) |
a987fcaa TH |
1366 | { |
1367 | struct ttm_bo_global_ref *bo_ref = | |
1368 | container_of(ref, struct ttm_bo_global_ref, ref); | |
1369 | struct ttm_bo_global *glob = ref->object; | |
1370 | int ret; | |
1371 | ||
1372 | mutex_init(&glob->device_list_mutex); | |
1373 | spin_lock_init(&glob->lru_lock); | |
1374 | glob->mem_glob = bo_ref->mem_glob; | |
1375 | glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); | |
1376 | ||
1377 | if (unlikely(glob->dummy_read_page == NULL)) { | |
1378 | ret = -ENOMEM; | |
1379 | goto out_no_drp; | |
1380 | } | |
1381 | ||
1382 | INIT_LIST_HEAD(&glob->swap_lru); | |
1383 | INIT_LIST_HEAD(&glob->device_list); | |
1384 | ||
1385 | ttm_mem_init_shrink(&glob->shrink, ttm_bo_swapout); | |
1386 | ret = ttm_mem_register_shrink(glob->mem_glob, &glob->shrink); | |
1387 | if (unlikely(ret != 0)) { | |
25d0479a | 1388 | pr_err("Could not register buffer object swapout\n"); |
a987fcaa TH |
1389 | goto out_no_shrink; |
1390 | } | |
1391 | ||
a987fcaa TH |
1392 | atomic_set(&glob->bo_count, 0); |
1393 | ||
b642ed06 RD |
1394 | ret = kobject_init_and_add( |
1395 | &glob->kobj, &ttm_bo_glob_kobj_type, ttm_get_kobj(), "buffer_objects"); | |
a987fcaa TH |
1396 | if (unlikely(ret != 0)) |
1397 | kobject_put(&glob->kobj); | |
1398 | return ret; | |
1399 | out_no_shrink: | |
1400 | __free_page(glob->dummy_read_page); | |
1401 | out_no_drp: | |
1402 | kfree(glob); | |
1403 | return ret; | |
1404 | } | |
1405 | EXPORT_SYMBOL(ttm_bo_global_init); | |
1406 | ||
1407 | ||
ba4e7d97 TH |
1408 | int ttm_bo_device_release(struct ttm_bo_device *bdev) |
1409 | { | |
1410 | int ret = 0; | |
1411 | unsigned i = TTM_NUM_MEM_TYPES; | |
1412 | struct ttm_mem_type_manager *man; | |
a987fcaa | 1413 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 TH |
1414 | |
1415 | while (i--) { | |
1416 | man = &bdev->man[i]; | |
1417 | if (man->has_type) { | |
1418 | man->use_type = false; | |
1419 | if ((i != TTM_PL_SYSTEM) && ttm_bo_clean_mm(bdev, i)) { | |
1420 | ret = -EBUSY; | |
25d0479a JP |
1421 | pr_err("DRM memory manager type %d is not clean\n", |
1422 | i); | |
ba4e7d97 TH |
1423 | } |
1424 | man->has_type = false; | |
1425 | } | |
1426 | } | |
1427 | ||
a987fcaa TH |
1428 | mutex_lock(&glob->device_list_mutex); |
1429 | list_del(&bdev->device_list); | |
1430 | mutex_unlock(&glob->device_list_mutex); | |
1431 | ||
f094cfc6 | 1432 | cancel_delayed_work_sync(&bdev->wq); |
ba4e7d97 TH |
1433 | |
1434 | while (ttm_bo_delayed_delete(bdev, true)) | |
1435 | ; | |
1436 | ||
a987fcaa | 1437 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
1438 | if (list_empty(&bdev->ddestroy)) |
1439 | TTM_DEBUG("Delayed destroy list was clean\n"); | |
1440 | ||
1441 | if (list_empty(&bdev->man[0].lru)) | |
1442 | TTM_DEBUG("Swap list was clean\n"); | |
a987fcaa | 1443 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1444 | |
72525b3f | 1445 | drm_vma_offset_manager_destroy(&bdev->vma_manager); |
ba4e7d97 | 1446 | |
ba4e7d97 TH |
1447 | return ret; |
1448 | } | |
1449 | EXPORT_SYMBOL(ttm_bo_device_release); | |
1450 | ||
ba4e7d97 | 1451 | int ttm_bo_device_init(struct ttm_bo_device *bdev, |
a987fcaa TH |
1452 | struct ttm_bo_global *glob, |
1453 | struct ttm_bo_driver *driver, | |
44d847b7 | 1454 | struct address_space *mapping, |
51c8b407 | 1455 | uint64_t file_page_offset, |
ad49f501 | 1456 | bool need_dma32) |
ba4e7d97 TH |
1457 | { |
1458 | int ret = -EINVAL; | |
1459 | ||
ba4e7d97 | 1460 | bdev->driver = driver; |
ba4e7d97 TH |
1461 | |
1462 | memset(bdev->man, 0, sizeof(bdev->man)); | |
1463 | ||
ba4e7d97 TH |
1464 | /* |
1465 | * Initialize the system memory buffer type. | |
1466 | * Other types need to be driver / IOCTL initialized. | |
1467 | */ | |
ca262a99 | 1468 | ret = ttm_bo_init_mm(bdev, TTM_PL_SYSTEM, 0); |
ba4e7d97 | 1469 | if (unlikely(ret != 0)) |
a987fcaa | 1470 | goto out_no_sys; |
ba4e7d97 | 1471 | |
72525b3f DH |
1472 | drm_vma_offset_manager_init(&bdev->vma_manager, file_page_offset, |
1473 | 0x10000000); | |
ba4e7d97 | 1474 | INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue); |
ba4e7d97 | 1475 | INIT_LIST_HEAD(&bdev->ddestroy); |
44d847b7 | 1476 | bdev->dev_mapping = mapping; |
a987fcaa | 1477 | bdev->glob = glob; |
ad49f501 | 1478 | bdev->need_dma32 = need_dma32; |
65705962 | 1479 | bdev->val_seq = 0; |
702adba2 | 1480 | spin_lock_init(&bdev->fence_lock); |
a987fcaa TH |
1481 | mutex_lock(&glob->device_list_mutex); |
1482 | list_add_tail(&bdev->device_list, &glob->device_list); | |
1483 | mutex_unlock(&glob->device_list_mutex); | |
ba4e7d97 TH |
1484 | |
1485 | return 0; | |
a987fcaa | 1486 | out_no_sys: |
ba4e7d97 TH |
1487 | return ret; |
1488 | } | |
1489 | EXPORT_SYMBOL(ttm_bo_device_init); | |
1490 | ||
1491 | /* | |
1492 | * buffer object vm functions. | |
1493 | */ | |
1494 | ||
1495 | bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
1496 | { | |
1497 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
1498 | ||
1499 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) { | |
1500 | if (mem->mem_type == TTM_PL_SYSTEM) | |
1501 | return false; | |
1502 | ||
1503 | if (man->flags & TTM_MEMTYPE_FLAG_CMA) | |
1504 | return false; | |
1505 | ||
1506 | if (mem->placement & TTM_PL_FLAG_CACHED) | |
1507 | return false; | |
1508 | } | |
1509 | return true; | |
1510 | } | |
1511 | ||
eba67093 | 1512 | void ttm_bo_unmap_virtual_locked(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
1513 | { |
1514 | struct ttm_bo_device *bdev = bo->bdev; | |
ba4e7d97 | 1515 | |
51335df9 | 1516 | drm_vma_node_unmap(&bo->vma_node, bdev->dev_mapping); |
eba67093 | 1517 | ttm_mem_io_free_vm(bo); |
ba4e7d97 | 1518 | } |
eba67093 TH |
1519 | |
1520 | void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo) | |
1521 | { | |
1522 | struct ttm_bo_device *bdev = bo->bdev; | |
1523 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; | |
1524 | ||
1525 | ttm_mem_io_lock(man, false); | |
1526 | ttm_bo_unmap_virtual_locked(bo); | |
1527 | ttm_mem_io_unlock(man); | |
ba4e7d97 | 1528 | } |
eba67093 TH |
1529 | |
1530 | ||
e024e110 | 1531 | EXPORT_SYMBOL(ttm_bo_unmap_virtual); |
ba4e7d97 | 1532 | |
ba4e7d97 TH |
1533 | |
1534 | int ttm_bo_wait(struct ttm_buffer_object *bo, | |
1717c0e2 | 1535 | bool lazy, bool interruptible, bool no_wait) |
ba4e7d97 TH |
1536 | { |
1537 | struct ttm_bo_driver *driver = bo->bdev->driver; | |
702adba2 | 1538 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 | 1539 | void *sync_obj; |
ba4e7d97 TH |
1540 | int ret = 0; |
1541 | ||
1717c0e2 | 1542 | if (likely(bo->sync_obj == NULL)) |
ba4e7d97 TH |
1543 | return 0; |
1544 | ||
1717c0e2 | 1545 | while (bo->sync_obj) { |
ba4e7d97 | 1546 | |
dedfdffd | 1547 | if (driver->sync_obj_signaled(bo->sync_obj)) { |
1717c0e2 DA |
1548 | void *tmp_obj = bo->sync_obj; |
1549 | bo->sync_obj = NULL; | |
1550 | clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); | |
1551 | spin_unlock(&bdev->fence_lock); | |
1552 | driver->sync_obj_unref(&tmp_obj); | |
1553 | spin_lock(&bdev->fence_lock); | |
ba4e7d97 TH |
1554 | continue; |
1555 | } | |
1556 | ||
1557 | if (no_wait) | |
1558 | return -EBUSY; | |
1559 | ||
1717c0e2 | 1560 | sync_obj = driver->sync_obj_ref(bo->sync_obj); |
702adba2 | 1561 | spin_unlock(&bdev->fence_lock); |
dedfdffd | 1562 | ret = driver->sync_obj_wait(sync_obj, |
ba4e7d97 TH |
1563 | lazy, interruptible); |
1564 | if (unlikely(ret != 0)) { | |
1565 | driver->sync_obj_unref(&sync_obj); | |
702adba2 | 1566 | spin_lock(&bdev->fence_lock); |
ba4e7d97 TH |
1567 | return ret; |
1568 | } | |
702adba2 | 1569 | spin_lock(&bdev->fence_lock); |
5fb4ef0e | 1570 | if (likely(bo->sync_obj == sync_obj)) { |
1717c0e2 DA |
1571 | void *tmp_obj = bo->sync_obj; |
1572 | bo->sync_obj = NULL; | |
1573 | clear_bit(TTM_BO_PRIV_FLAG_MOVING, | |
1574 | &bo->priv_flags); | |
1575 | spin_unlock(&bdev->fence_lock); | |
1576 | driver->sync_obj_unref(&sync_obj); | |
1577 | driver->sync_obj_unref(&tmp_obj); | |
1578 | spin_lock(&bdev->fence_lock); | |
fee280d3 | 1579 | } else { |
702adba2 | 1580 | spin_unlock(&bdev->fence_lock); |
fee280d3 | 1581 | driver->sync_obj_unref(&sync_obj); |
702adba2 | 1582 | spin_lock(&bdev->fence_lock); |
ba4e7d97 TH |
1583 | } |
1584 | } | |
1585 | return 0; | |
1586 | } | |
1587 | EXPORT_SYMBOL(ttm_bo_wait); | |
1588 | ||
ba4e7d97 TH |
1589 | int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) |
1590 | { | |
702adba2 | 1591 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 TH |
1592 | int ret = 0; |
1593 | ||
1594 | /* | |
8cfe92d6 | 1595 | * Using ttm_bo_reserve makes sure the lru lists are updated. |
ba4e7d97 TH |
1596 | */ |
1597 | ||
0eff2a24 | 1598 | ret = ttm_bo_reserve(bo, true, no_wait, false, NULL); |
ba4e7d97 TH |
1599 | if (unlikely(ret != 0)) |
1600 | return ret; | |
702adba2 | 1601 | spin_lock(&bdev->fence_lock); |
1717c0e2 | 1602 | ret = ttm_bo_wait(bo, false, true, no_wait); |
702adba2 | 1603 | spin_unlock(&bdev->fence_lock); |
ba4e7d97 TH |
1604 | if (likely(ret == 0)) |
1605 | atomic_inc(&bo->cpu_writers); | |
1606 | ttm_bo_unreserve(bo); | |
1607 | return ret; | |
1608 | } | |
d1ede145 | 1609 | EXPORT_SYMBOL(ttm_bo_synccpu_write_grab); |
ba4e7d97 TH |
1610 | |
1611 | void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo) | |
1612 | { | |
654aa792 | 1613 | atomic_dec(&bo->cpu_writers); |
ba4e7d97 | 1614 | } |
d1ede145 | 1615 | EXPORT_SYMBOL(ttm_bo_synccpu_write_release); |
ba4e7d97 TH |
1616 | |
1617 | /** | |
1618 | * A buffer object shrink method that tries to swap out the first | |
1619 | * buffer object on the bo_global::swap_lru list. | |
1620 | */ | |
1621 | ||
1622 | static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) | |
1623 | { | |
a987fcaa TH |
1624 | struct ttm_bo_global *glob = |
1625 | container_of(shrink, struct ttm_bo_global, shrink); | |
ba4e7d97 TH |
1626 | struct ttm_buffer_object *bo; |
1627 | int ret = -EBUSY; | |
1628 | int put_count; | |
1629 | uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); | |
1630 | ||
a987fcaa | 1631 | spin_lock(&glob->lru_lock); |
2b7b3ad2 | 1632 | list_for_each_entry(bo, &glob->swap_lru, swap) { |
0eff2a24 | 1633 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
2b7b3ad2 ML |
1634 | if (!ret) |
1635 | break; | |
1636 | } | |
85b144f8 | 1637 | |
2b7b3ad2 ML |
1638 | if (ret) { |
1639 | spin_unlock(&glob->lru_lock); | |
1640 | return ret; | |
1641 | } | |
e1efc9b6 | 1642 | |
2b7b3ad2 | 1643 | kref_get(&bo->list_kref); |
ba4e7d97 | 1644 | |
2b7b3ad2 ML |
1645 | if (!list_empty(&bo->ddestroy)) { |
1646 | ret = ttm_bo_cleanup_refs_and_unlock(bo, false, false); | |
1647 | kref_put(&bo->list_kref, ttm_bo_release_list); | |
1648 | return ret; | |
ba4e7d97 TH |
1649 | } |
1650 | ||
ba4e7d97 | 1651 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 1652 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1653 | |
d6ea8886 | 1654 | ttm_bo_list_ref_sub(bo, put_count, true); |
ba4e7d97 TH |
1655 | |
1656 | /** | |
1657 | * Wait for GPU, then move to system cached. | |
1658 | */ | |
1659 | ||
702adba2 | 1660 | spin_lock(&bo->bdev->fence_lock); |
1717c0e2 | 1661 | ret = ttm_bo_wait(bo, false, false, false); |
702adba2 | 1662 | spin_unlock(&bo->bdev->fence_lock); |
ba4e7d97 TH |
1663 | |
1664 | if (unlikely(ret != 0)) | |
1665 | goto out; | |
1666 | ||
1667 | if ((bo->mem.placement & swap_placement) != swap_placement) { | |
1668 | struct ttm_mem_reg evict_mem; | |
1669 | ||
1670 | evict_mem = bo->mem; | |
1671 | evict_mem.mm_node = NULL; | |
1672 | evict_mem.placement = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED; | |
1673 | evict_mem.mem_type = TTM_PL_SYSTEM; | |
1674 | ||
1675 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, | |
97a875cb | 1676 | false, false); |
ba4e7d97 TH |
1677 | if (unlikely(ret != 0)) |
1678 | goto out; | |
1679 | } | |
1680 | ||
1681 | ttm_bo_unmap_virtual(bo); | |
1682 | ||
1683 | /** | |
1684 | * Swap out. Buffer will be swapped in again as soon as | |
1685 | * anyone tries to access a ttm page. | |
1686 | */ | |
1687 | ||
3f09ea4e TH |
1688 | if (bo->bdev->driver->swap_notify) |
1689 | bo->bdev->driver->swap_notify(bo); | |
1690 | ||
5df23979 | 1691 | ret = ttm_tt_swapout(bo->ttm, bo->persistent_swap_storage); |
ba4e7d97 TH |
1692 | out: |
1693 | ||
1694 | /** | |
1695 | * | |
1696 | * Unreserve without putting on LRU to avoid swapping out an | |
1697 | * already swapped buffer. | |
1698 | */ | |
1699 | ||
c7523083 | 1700 | __ttm_bo_unreserve(bo); |
ba4e7d97 TH |
1701 | kref_put(&bo->list_kref, ttm_bo_release_list); |
1702 | return ret; | |
1703 | } | |
1704 | ||
1705 | void ttm_bo_swapout_all(struct ttm_bo_device *bdev) | |
1706 | { | |
a987fcaa | 1707 | while (ttm_bo_swapout(&bdev->glob->shrink) == 0) |
ba4e7d97 TH |
1708 | ; |
1709 | } | |
e99e1e78 | 1710 | EXPORT_SYMBOL(ttm_bo_swapout_all); |
c58f009e TH |
1711 | |
1712 | /** | |
1713 | * ttm_bo_wait_unreserved - interruptible wait for a buffer object to become | |
1714 | * unreserved | |
1715 | * | |
1716 | * @bo: Pointer to buffer | |
1717 | */ | |
1718 | int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo) | |
1719 | { | |
1720 | int ret; | |
1721 | ||
1722 | /* | |
1723 | * In the absense of a wait_unlocked API, | |
1724 | * Use the bo::wu_mutex to avoid triggering livelocks due to | |
1725 | * concurrent use of this function. Note that this use of | |
1726 | * bo::wu_mutex can go away if we change locking order to | |
1727 | * mmap_sem -> bo::reserve. | |
1728 | */ | |
1729 | ret = mutex_lock_interruptible(&bo->wu_mutex); | |
1730 | if (unlikely(ret != 0)) | |
1731 | return -ERESTARTSYS; | |
1732 | if (!ww_mutex_is_locked(&bo->resv->lock)) | |
1733 | goto out_unlock; | |
c7523083 | 1734 | ret = __ttm_bo_reserve(bo, true, false, false, NULL); |
c58f009e TH |
1735 | if (unlikely(ret != 0)) |
1736 | goto out_unlock; | |
c7523083 | 1737 | __ttm_bo_unreserve(bo); |
c58f009e TH |
1738 | |
1739 | out_unlock: | |
1740 | mutex_unlock(&bo->wu_mutex); | |
1741 | return ret; | |
1742 | } |