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