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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> |
f2c24b83 | 43 | #include <linux/reservation.h> |
ba4e7d97 TH |
44 | |
45 | #define TTM_ASSERT_LOCKED(param) | |
46 | #define TTM_DEBUG(fmt, arg...) | |
47 | #define TTM_BO_HASH_ORDER 13 | |
48 | ||
ba4e7d97 | 49 | static int ttm_bo_swapout(struct ttm_mem_shrink *shrink); |
a987fcaa TH |
50 | static void ttm_bo_global_kobj_release(struct kobject *kobj); |
51 | ||
52 | static struct attribute ttm_bo_count = { | |
53 | .name = "bo_count", | |
54 | .mode = S_IRUGO | |
55 | }; | |
56 | ||
f1217ed0 CK |
57 | static inline int ttm_mem_type_from_place(const struct ttm_place *place, |
58 | uint32_t *mem_type) | |
fb53f862 JG |
59 | { |
60 | int i; | |
61 | ||
62 | for (i = 0; i <= TTM_PL_PRIV5; i++) | |
f1217ed0 | 63 | if (place->flags & (1 << i)) { |
fb53f862 JG |
64 | *mem_type = i; |
65 | return 0; | |
66 | } | |
67 | return -EINVAL; | |
68 | } | |
69 | ||
5012f506 | 70 | static void ttm_mem_type_debug(struct ttm_bo_device *bdev, int mem_type) |
fb53f862 | 71 | { |
5012f506 JG |
72 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
73 | ||
25d0479a JP |
74 | pr_err(" has_type: %d\n", man->has_type); |
75 | pr_err(" use_type: %d\n", man->use_type); | |
76 | pr_err(" flags: 0x%08X\n", man->flags); | |
54c4cd68 | 77 | pr_err(" gpu_offset: 0x%08llX\n", man->gpu_offset); |
25d0479a JP |
78 | pr_err(" size: %llu\n", man->size); |
79 | pr_err(" available_caching: 0x%08X\n", man->available_caching); | |
80 | pr_err(" default_caching: 0x%08X\n", man->default_caching); | |
d961db75 BS |
81 | if (mem_type != TTM_PL_SYSTEM) |
82 | (*man->func->debug)(man, TTM_PFX); | |
fb53f862 JG |
83 | } |
84 | ||
85 | static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo, | |
86 | struct ttm_placement *placement) | |
87 | { | |
fb53f862 JG |
88 | int i, ret, mem_type; |
89 | ||
25d0479a JP |
90 | pr_err("No space for %p (%lu pages, %luK, %luM)\n", |
91 | bo, bo->mem.num_pages, bo->mem.size >> 10, | |
92 | bo->mem.size >> 20); | |
fb53f862 | 93 | for (i = 0; i < placement->num_placement; i++) { |
f1217ed0 | 94 | ret = ttm_mem_type_from_place(&placement->placement[i], |
fb53f862 JG |
95 | &mem_type); |
96 | if (ret) | |
97 | return; | |
25d0479a | 98 | pr_err(" placement[%d]=0x%08X (%d)\n", |
f1217ed0 | 99 | i, placement->placement[i].flags, mem_type); |
5012f506 | 100 | ttm_mem_type_debug(bo->bdev, mem_type); |
fb53f862 JG |
101 | } |
102 | } | |
103 | ||
a987fcaa TH |
104 | static ssize_t ttm_bo_global_show(struct kobject *kobj, |
105 | struct attribute *attr, | |
106 | char *buffer) | |
107 | { | |
108 | struct ttm_bo_global *glob = | |
109 | container_of(kobj, struct ttm_bo_global, kobj); | |
110 | ||
111 | return snprintf(buffer, PAGE_SIZE, "%lu\n", | |
112 | (unsigned long) atomic_read(&glob->bo_count)); | |
113 | } | |
114 | ||
115 | static struct attribute *ttm_bo_global_attrs[] = { | |
116 | &ttm_bo_count, | |
117 | NULL | |
118 | }; | |
119 | ||
52cf25d0 | 120 | static const struct sysfs_ops ttm_bo_global_ops = { |
a987fcaa TH |
121 | .show = &ttm_bo_global_show |
122 | }; | |
123 | ||
124 | static struct kobj_type ttm_bo_glob_kobj_type = { | |
125 | .release = &ttm_bo_global_kobj_release, | |
126 | .sysfs_ops = &ttm_bo_global_ops, | |
127 | .default_attrs = ttm_bo_global_attrs | |
128 | }; | |
129 | ||
ba4e7d97 TH |
130 | |
131 | static inline uint32_t ttm_bo_type_flags(unsigned type) | |
132 | { | |
133 | return 1 << (type); | |
134 | } | |
135 | ||
136 | static void ttm_bo_release_list(struct kref *list_kref) | |
137 | { | |
138 | struct ttm_buffer_object *bo = | |
139 | container_of(list_kref, struct ttm_buffer_object, list_kref); | |
140 | struct ttm_bo_device *bdev = bo->bdev; | |
57de4ba9 | 141 | size_t acc_size = bo->acc_size; |
ba4e7d97 TH |
142 | |
143 | BUG_ON(atomic_read(&bo->list_kref.refcount)); | |
144 | BUG_ON(atomic_read(&bo->kref.refcount)); | |
145 | BUG_ON(atomic_read(&bo->cpu_writers)); | |
ba4e7d97 TH |
146 | BUG_ON(bo->mem.mm_node != NULL); |
147 | BUG_ON(!list_empty(&bo->lru)); | |
148 | BUG_ON(!list_empty(&bo->ddestroy)); | |
149 | ||
150 | if (bo->ttm) | |
151 | ttm_tt_destroy(bo->ttm); | |
a987fcaa | 152 | atomic_dec(&bo->glob->bo_count); |
5e338405 ML |
153 | if (bo->resv == &bo->ttm_resv) |
154 | reservation_object_fini(&bo->ttm_resv); | |
c58f009e | 155 | mutex_destroy(&bo->wu_mutex); |
ba4e7d97 TH |
156 | if (bo->destroy) |
157 | bo->destroy(bo); | |
158 | else { | |
ba4e7d97 TH |
159 | kfree(bo); |
160 | } | |
57de4ba9 | 161 | ttm_mem_global_free(bdev->glob->mem_glob, acc_size); |
ba4e7d97 TH |
162 | } |
163 | ||
d6ea8886 | 164 | void ttm_bo_add_to_lru(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
165 | { |
166 | struct ttm_bo_device *bdev = bo->bdev; | |
167 | struct ttm_mem_type_manager *man; | |
168 | ||
009a9dad | 169 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
170 | |
171 | if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { | |
172 | ||
173 | BUG_ON(!list_empty(&bo->lru)); | |
174 | ||
175 | man = &bdev->man[bo->mem.mem_type]; | |
176 | list_add_tail(&bo->lru, &man->lru); | |
177 | kref_get(&bo->list_kref); | |
178 | ||
179 | if (bo->ttm != NULL) { | |
a987fcaa | 180 | list_add_tail(&bo->swap, &bo->glob->swap_lru); |
ba4e7d97 TH |
181 | kref_get(&bo->list_kref); |
182 | } | |
183 | } | |
184 | } | |
34820324 | 185 | EXPORT_SYMBOL(ttm_bo_add_to_lru); |
ba4e7d97 | 186 | |
d6ea8886 | 187 | int ttm_bo_del_from_lru(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
188 | { |
189 | int put_count = 0; | |
190 | ||
191 | if (!list_empty(&bo->swap)) { | |
192 | list_del_init(&bo->swap); | |
193 | ++put_count; | |
194 | } | |
195 | if (!list_empty(&bo->lru)) { | |
196 | list_del_init(&bo->lru); | |
197 | ++put_count; | |
198 | } | |
199 | ||
200 | /* | |
201 | * TODO: Add a driver hook to delete from | |
202 | * driver-specific LRU's here. | |
203 | */ | |
204 | ||
205 | return put_count; | |
206 | } | |
207 | ||
ba4e7d97 TH |
208 | static void ttm_bo_ref_bug(struct kref *list_kref) |
209 | { | |
210 | BUG(); | |
211 | } | |
212 | ||
d6ea8886 DA |
213 | void ttm_bo_list_ref_sub(struct ttm_buffer_object *bo, int count, |
214 | bool never_free) | |
215 | { | |
2357cbe5 TH |
216 | kref_sub(&bo->list_kref, count, |
217 | (never_free) ? ttm_bo_ref_bug : ttm_bo_release_list); | |
d6ea8886 DA |
218 | } |
219 | ||
34820324 | 220 | void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo) |
5e45d7df | 221 | { |
34820324 | 222 | int put_count; |
ecff665f | 223 | |
34820324 ML |
224 | spin_lock(&bo->glob->lru_lock); |
225 | put_count = ttm_bo_del_from_lru(bo); | |
226 | spin_unlock(&bo->glob->lru_lock); | |
227 | ttm_bo_list_ref_sub(bo, put_count, true); | |
ecff665f | 228 | } |
34820324 | 229 | EXPORT_SYMBOL(ttm_bo_del_sub_from_lru); |
ecff665f | 230 | |
ba4e7d97 TH |
231 | /* |
232 | * Call bo->mutex locked. | |
233 | */ | |
ba4e7d97 TH |
234 | static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc) |
235 | { | |
236 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 237 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 TH |
238 | int ret = 0; |
239 | uint32_t page_flags = 0; | |
240 | ||
241 | TTM_ASSERT_LOCKED(&bo->mutex); | |
242 | bo->ttm = NULL; | |
243 | ||
ad49f501 DA |
244 | if (bdev->need_dma32) |
245 | page_flags |= TTM_PAGE_FLAG_DMA32; | |
246 | ||
ba4e7d97 TH |
247 | switch (bo->type) { |
248 | case ttm_bo_type_device: | |
249 | if (zero_alloc) | |
250 | page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC; | |
251 | case ttm_bo_type_kernel: | |
649bf3ca JG |
252 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, |
253 | page_flags, glob->dummy_read_page); | |
ba4e7d97 TH |
254 | if (unlikely(bo->ttm == NULL)) |
255 | ret = -ENOMEM; | |
256 | break; | |
129b78bf DA |
257 | case ttm_bo_type_sg: |
258 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, | |
259 | page_flags | TTM_PAGE_FLAG_SG, | |
260 | glob->dummy_read_page); | |
261 | if (unlikely(bo->ttm == NULL)) { | |
262 | ret = -ENOMEM; | |
263 | break; | |
264 | } | |
265 | bo->ttm->sg = bo->sg; | |
266 | break; | |
ba4e7d97 | 267 | default: |
25d0479a | 268 | pr_err("Illegal buffer object type\n"); |
ba4e7d97 TH |
269 | ret = -EINVAL; |
270 | break; | |
271 | } | |
272 | ||
273 | return ret; | |
274 | } | |
275 | ||
276 | static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo, | |
277 | struct ttm_mem_reg *mem, | |
9d87fa21 | 278 | bool evict, bool interruptible, |
97a875cb | 279 | bool no_wait_gpu) |
ba4e7d97 TH |
280 | { |
281 | struct ttm_bo_device *bdev = bo->bdev; | |
282 | bool old_is_pci = ttm_mem_reg_is_pci(bdev, &bo->mem); | |
283 | bool new_is_pci = ttm_mem_reg_is_pci(bdev, mem); | |
284 | struct ttm_mem_type_manager *old_man = &bdev->man[bo->mem.mem_type]; | |
285 | struct ttm_mem_type_manager *new_man = &bdev->man[mem->mem_type]; | |
286 | int ret = 0; | |
287 | ||
288 | if (old_is_pci || new_is_pci || | |
eba67093 TH |
289 | ((mem->placement & bo->mem.placement & TTM_PL_MASK_CACHING) == 0)) { |
290 | ret = ttm_mem_io_lock(old_man, true); | |
291 | if (unlikely(ret != 0)) | |
292 | goto out_err; | |
293 | ttm_bo_unmap_virtual_locked(bo); | |
294 | ttm_mem_io_unlock(old_man); | |
295 | } | |
ba4e7d97 TH |
296 | |
297 | /* | |
298 | * Create and bind a ttm if required. | |
299 | */ | |
300 | ||
8d3bb236 BS |
301 | if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) { |
302 | if (bo->ttm == NULL) { | |
ff02b13f BS |
303 | bool zero = !(old_man->flags & TTM_MEMTYPE_FLAG_FIXED); |
304 | ret = ttm_bo_add_ttm(bo, zero); | |
8d3bb236 BS |
305 | if (ret) |
306 | goto out_err; | |
307 | } | |
ba4e7d97 TH |
308 | |
309 | ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement); | |
310 | if (ret) | |
87ef9209 | 311 | goto out_err; |
ba4e7d97 TH |
312 | |
313 | if (mem->mem_type != TTM_PL_SYSTEM) { | |
314 | ret = ttm_tt_bind(bo->ttm, mem); | |
315 | if (ret) | |
316 | goto out_err; | |
317 | } | |
318 | ||
319 | if (bo->mem.mem_type == TTM_PL_SYSTEM) { | |
82ef594e BS |
320 | if (bdev->driver->move_notify) |
321 | bdev->driver->move_notify(bo, mem); | |
ca262a99 | 322 | bo->mem = *mem; |
ba4e7d97 | 323 | mem->mm_node = NULL; |
ba4e7d97 TH |
324 | goto moved; |
325 | } | |
ba4e7d97 TH |
326 | } |
327 | ||
9f1feed2 BS |
328 | if (bdev->driver->move_notify) |
329 | bdev->driver->move_notify(bo, mem); | |
330 | ||
ba4e7d97 TH |
331 | if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
332 | !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) | |
97a875cb | 333 | ret = ttm_bo_move_ttm(bo, evict, no_wait_gpu, mem); |
ba4e7d97 TH |
334 | else if (bdev->driver->move) |
335 | ret = bdev->driver->move(bo, evict, interruptible, | |
97a875cb | 336 | no_wait_gpu, mem); |
ba4e7d97 | 337 | else |
97a875cb | 338 | ret = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, mem); |
ba4e7d97 | 339 | |
9f1feed2 BS |
340 | if (ret) { |
341 | if (bdev->driver->move_notify) { | |
342 | struct ttm_mem_reg tmp_mem = *mem; | |
343 | *mem = bo->mem; | |
344 | bo->mem = tmp_mem; | |
345 | bdev->driver->move_notify(bo, mem); | |
346 | bo->mem = *mem; | |
014b3440 | 347 | *mem = tmp_mem; |
9f1feed2 | 348 | } |
ba4e7d97 | 349 | |
9f1feed2 BS |
350 | goto out_err; |
351 | } | |
dc97b340 | 352 | |
ba4e7d97 TH |
353 | moved: |
354 | if (bo->evicted) { | |
9ef7506f RC |
355 | if (bdev->driver->invalidate_caches) { |
356 | ret = bdev->driver->invalidate_caches(bdev, bo->mem.placement); | |
357 | if (ret) | |
358 | pr_err("Can not flush read caches\n"); | |
359 | } | |
ba4e7d97 TH |
360 | bo->evicted = false; |
361 | } | |
362 | ||
363 | if (bo->mem.mm_node) { | |
d961db75 | 364 | bo->offset = (bo->mem.start << PAGE_SHIFT) + |
ba4e7d97 TH |
365 | bdev->man[bo->mem.mem_type].gpu_offset; |
366 | bo->cur_placement = bo->mem.placement; | |
354fb52c TH |
367 | } else |
368 | bo->offset = 0; | |
ba4e7d97 TH |
369 | |
370 | return 0; | |
371 | ||
372 | out_err: | |
373 | new_man = &bdev->man[bo->mem.mem_type]; | |
374 | if ((new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && bo->ttm) { | |
375 | ttm_tt_unbind(bo->ttm); | |
376 | ttm_tt_destroy(bo->ttm); | |
377 | bo->ttm = NULL; | |
378 | } | |
379 | ||
380 | return ret; | |
381 | } | |
382 | ||
1df6a2eb | 383 | /** |
40d857bb | 384 | * Call bo::reserved. |
1df6a2eb | 385 | * Will release GPU memory type usage on destruction. |
40d857bb TH |
386 | * This is the place to put in driver specific hooks to release |
387 | * driver private resources. | |
388 | * Will release the bo::reserved lock. | |
1df6a2eb TH |
389 | */ |
390 | ||
391 | static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo) | |
392 | { | |
dc97b340 JG |
393 | if (bo->bdev->driver->move_notify) |
394 | bo->bdev->driver->move_notify(bo, NULL); | |
395 | ||
1df6a2eb | 396 | if (bo->ttm) { |
1df6a2eb TH |
397 | ttm_tt_unbind(bo->ttm); |
398 | ttm_tt_destroy(bo->ttm); | |
399 | bo->ttm = NULL; | |
1df6a2eb | 400 | } |
40d857bb | 401 | ttm_bo_mem_put(bo, &bo->mem); |
1df6a2eb | 402 | |
5e338405 | 403 | ww_mutex_unlock (&bo->resv->lock); |
1df6a2eb TH |
404 | } |
405 | ||
f2c24b83 ML |
406 | static void ttm_bo_flush_all_fences(struct ttm_buffer_object *bo) |
407 | { | |
408 | struct reservation_object_list *fobj; | |
409 | struct fence *fence; | |
410 | int i; | |
411 | ||
412 | fobj = reservation_object_get_list(bo->resv); | |
413 | fence = reservation_object_get_excl(bo->resv); | |
414 | if (fence && !fence->ops->signaled) | |
415 | fence_enable_sw_signaling(fence); | |
416 | ||
417 | for (i = 0; fobj && i < fobj->shared_count; ++i) { | |
418 | fence = rcu_dereference_protected(fobj->shared[i], | |
419 | reservation_object_held(bo->resv)); | |
420 | ||
421 | if (!fence->ops->signaled) | |
422 | fence_enable_sw_signaling(fence); | |
423 | } | |
424 | } | |
425 | ||
e1efc9b6 | 426 | static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
427 | { |
428 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 429 | struct ttm_bo_global *glob = bo->glob; |
e1efc9b6 | 430 | int put_count; |
ba4e7d97 TH |
431 | int ret; |
432 | ||
4154f051 | 433 | spin_lock(&glob->lru_lock); |
0eff2a24 | 434 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
4154f051 | 435 | |
dd7cfd64 | 436 | if (!ret) { |
f2c24b83 | 437 | if (!ttm_bo_wait(bo, false, false, true)) { |
dd7cfd64 | 438 | put_count = ttm_bo_del_from_lru(bo); |
ba4e7d97 | 439 | |
dd7cfd64 ML |
440 | spin_unlock(&glob->lru_lock); |
441 | ttm_bo_cleanup_memtype_use(bo); | |
ba4e7d97 | 442 | |
dd7cfd64 | 443 | ttm_bo_list_ref_sub(bo, put_count, true); |
4154f051 | 444 | |
dd7cfd64 | 445 | return; |
f2c24b83 ML |
446 | } else |
447 | ttm_bo_flush_all_fences(bo); | |
15205fbc TH |
448 | |
449 | /* | |
450 | * Make NO_EVICT bos immediately available to | |
451 | * shrinkers, now that they are queued for | |
452 | * destruction. | |
453 | */ | |
454 | if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT) { | |
455 | bo->mem.placement &= ~TTM_PL_FLAG_NO_EVICT; | |
456 | ttm_bo_add_to_lru(bo); | |
457 | } | |
458 | ||
c7523083 | 459 | __ttm_bo_unreserve(bo); |
15205fbc | 460 | } |
e1efc9b6 TH |
461 | |
462 | kref_get(&bo->list_kref); | |
463 | list_add_tail(&bo->ddestroy, &bdev->ddestroy); | |
464 | spin_unlock(&glob->lru_lock); | |
e1efc9b6 | 465 | |
e1efc9b6 TH |
466 | schedule_delayed_work(&bdev->wq, |
467 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
468 | } | |
469 | ||
470 | /** | |
85b144f8 | 471 | * function ttm_bo_cleanup_refs_and_unlock |
e1efc9b6 TH |
472 | * If bo idle, remove from delayed- and lru lists, and unref. |
473 | * If not idle, do nothing. | |
474 | * | |
85b144f8 ML |
475 | * Must be called with lru_lock and reservation held, this function |
476 | * will drop both before returning. | |
477 | * | |
e1efc9b6 | 478 | * @interruptible Any sleeps should occur interruptibly. |
e1efc9b6 TH |
479 | * @no_wait_gpu Never wait for gpu. Return -EBUSY instead. |
480 | */ | |
481 | ||
85b144f8 ML |
482 | static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, |
483 | bool interruptible, | |
484 | bool no_wait_gpu) | |
e1efc9b6 TH |
485 | { |
486 | struct ttm_bo_global *glob = bo->glob; | |
487 | int put_count; | |
85b144f8 | 488 | int ret; |
e1efc9b6 | 489 | |
85b144f8 | 490 | ret = ttm_bo_wait(bo, false, false, true); |
e1efc9b6 | 491 | |
85b144f8 | 492 | if (ret && !no_wait_gpu) { |
472db7ab ML |
493 | long lret; |
494 | ww_mutex_unlock(&bo->resv->lock); | |
495 | spin_unlock(&glob->lru_lock); | |
496 | ||
497 | lret = reservation_object_wait_timeout_rcu(bo->resv, | |
498 | true, | |
499 | interruptible, | |
500 | 30 * HZ); | |
501 | ||
502 | if (lret < 0) | |
503 | return lret; | |
504 | else if (lret == 0) | |
505 | return -EBUSY; | |
b8e902f2 | 506 | |
85b144f8 | 507 | spin_lock(&glob->lru_lock); |
0eff2a24 | 508 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
b8e902f2 | 509 | |
85b144f8 ML |
510 | /* |
511 | * We raced, and lost, someone else holds the reservation now, | |
512 | * and is probably busy in ttm_bo_cleanup_memtype_use. | |
513 | * | |
514 | * Even if it's not the case, because we finished waiting any | |
515 | * delayed destruction would succeed, so just return success | |
516 | * here. | |
517 | */ | |
518 | if (ret) { | |
519 | spin_unlock(&glob->lru_lock); | |
520 | return 0; | |
521 | } | |
7040138f ML |
522 | |
523 | /* | |
524 | * remove sync_obj with ttm_bo_wait, the wait should be | |
525 | * finished, and no new wait object should have been added. | |
526 | */ | |
7040138f ML |
527 | ret = ttm_bo_wait(bo, false, false, true); |
528 | WARN_ON(ret); | |
529 | } | |
ba4e7d97 | 530 | |
85b144f8 | 531 | if (ret || unlikely(list_empty(&bo->ddestroy))) { |
c7523083 | 532 | __ttm_bo_unreserve(bo); |
a987fcaa | 533 | spin_unlock(&glob->lru_lock); |
85b144f8 | 534 | return ret; |
ba4e7d97 TH |
535 | } |
536 | ||
e1efc9b6 TH |
537 | put_count = ttm_bo_del_from_lru(bo); |
538 | list_del_init(&bo->ddestroy); | |
539 | ++put_count; | |
540 | ||
541 | spin_unlock(&glob->lru_lock); | |
542 | ttm_bo_cleanup_memtype_use(bo); | |
543 | ||
d6ea8886 | 544 | ttm_bo_list_ref_sub(bo, put_count, true); |
e1efc9b6 TH |
545 | |
546 | return 0; | |
ba4e7d97 TH |
547 | } |
548 | ||
549 | /** | |
550 | * Traverse the delayed list, and call ttm_bo_cleanup_refs on all | |
551 | * encountered buffers. | |
552 | */ | |
553 | ||
554 | static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) | |
555 | { | |
a987fcaa | 556 | struct ttm_bo_global *glob = bdev->glob; |
1a961ce0 LB |
557 | struct ttm_buffer_object *entry = NULL; |
558 | int ret = 0; | |
ba4e7d97 | 559 | |
a987fcaa | 560 | spin_lock(&glob->lru_lock); |
1a961ce0 LB |
561 | if (list_empty(&bdev->ddestroy)) |
562 | goto out_unlock; | |
563 | ||
564 | entry = list_first_entry(&bdev->ddestroy, | |
565 | struct ttm_buffer_object, ddestroy); | |
566 | kref_get(&entry->list_kref); | |
567 | ||
568 | for (;;) { | |
569 | struct ttm_buffer_object *nentry = NULL; | |
570 | ||
571 | if (entry->ddestroy.next != &bdev->ddestroy) { | |
572 | nentry = list_first_entry(&entry->ddestroy, | |
573 | struct ttm_buffer_object, ddestroy); | |
ba4e7d97 TH |
574 | kref_get(&nentry->list_kref); |
575 | } | |
ba4e7d97 | 576 | |
0eff2a24 | 577 | ret = __ttm_bo_reserve(entry, false, true, false, NULL); |
63d0a419 ML |
578 | if (remove_all && ret) { |
579 | spin_unlock(&glob->lru_lock); | |
c7523083 | 580 | ret = __ttm_bo_reserve(entry, false, false, |
0eff2a24 | 581 | false, NULL); |
63d0a419 ML |
582 | spin_lock(&glob->lru_lock); |
583 | } | |
584 | ||
85b144f8 ML |
585 | if (!ret) |
586 | ret = ttm_bo_cleanup_refs_and_unlock(entry, false, | |
587 | !remove_all); | |
588 | else | |
589 | spin_unlock(&glob->lru_lock); | |
590 | ||
ba4e7d97 | 591 | kref_put(&entry->list_kref, ttm_bo_release_list); |
1a961ce0 LB |
592 | entry = nentry; |
593 | ||
594 | if (ret || !entry) | |
595 | goto out; | |
ba4e7d97 | 596 | |
a987fcaa | 597 | spin_lock(&glob->lru_lock); |
1a961ce0 | 598 | if (list_empty(&entry->ddestroy)) |
ba4e7d97 TH |
599 | break; |
600 | } | |
ba4e7d97 | 601 | |
1a961ce0 LB |
602 | out_unlock: |
603 | spin_unlock(&glob->lru_lock); | |
604 | out: | |
605 | if (entry) | |
606 | kref_put(&entry->list_kref, ttm_bo_release_list); | |
ba4e7d97 TH |
607 | return ret; |
608 | } | |
609 | ||
610 | static void ttm_bo_delayed_workqueue(struct work_struct *work) | |
611 | { | |
612 | struct ttm_bo_device *bdev = | |
613 | container_of(work, struct ttm_bo_device, wq.work); | |
614 | ||
615 | if (ttm_bo_delayed_delete(bdev, false)) { | |
616 | schedule_delayed_work(&bdev->wq, | |
617 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
618 | } | |
619 | } | |
620 | ||
621 | static void ttm_bo_release(struct kref *kref) | |
622 | { | |
623 | struct ttm_buffer_object *bo = | |
624 | container_of(kref, struct ttm_buffer_object, kref); | |
625 | struct ttm_bo_device *bdev = bo->bdev; | |
eba67093 | 626 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; |
ba4e7d97 | 627 | |
72525b3f | 628 | drm_vma_offset_remove(&bdev->vma_manager, &bo->vma_node); |
eba67093 TH |
629 | ttm_mem_io_lock(man, false); |
630 | ttm_mem_io_free_vm(bo); | |
631 | ttm_mem_io_unlock(man); | |
e1efc9b6 | 632 | ttm_bo_cleanup_refs_or_queue(bo); |
ba4e7d97 | 633 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
634 | } |
635 | ||
636 | void ttm_bo_unref(struct ttm_buffer_object **p_bo) | |
637 | { | |
638 | struct ttm_buffer_object *bo = *p_bo; | |
ba4e7d97 TH |
639 | |
640 | *p_bo = NULL; | |
ba4e7d97 | 641 | kref_put(&bo->kref, ttm_bo_release); |
ba4e7d97 TH |
642 | } |
643 | EXPORT_SYMBOL(ttm_bo_unref); | |
644 | ||
7c5ee536 MG |
645 | int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev) |
646 | { | |
647 | return cancel_delayed_work_sync(&bdev->wq); | |
648 | } | |
649 | EXPORT_SYMBOL(ttm_bo_lock_delayed_workqueue); | |
650 | ||
651 | void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched) | |
652 | { | |
653 | if (resched) | |
654 | schedule_delayed_work(&bdev->wq, | |
655 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
656 | } | |
657 | EXPORT_SYMBOL(ttm_bo_unlock_delayed_workqueue); | |
658 | ||
ca262a99 | 659 | static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible, |
97a875cb | 660 | bool no_wait_gpu) |
ba4e7d97 | 661 | { |
ba4e7d97 TH |
662 | struct ttm_bo_device *bdev = bo->bdev; |
663 | struct ttm_mem_reg evict_mem; | |
ca262a99 JG |
664 | struct ttm_placement placement; |
665 | int ret = 0; | |
ba4e7d97 | 666 | |
1717c0e2 | 667 | ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); |
ba4e7d97 | 668 | |
78ecf091 | 669 | if (unlikely(ret != 0)) { |
98ffc415 | 670 | if (ret != -ERESTARTSYS) { |
25d0479a | 671 | pr_err("Failed to expire sync object before buffer eviction\n"); |
78ecf091 | 672 | } |
ba4e7d97 TH |
673 | goto out; |
674 | } | |
675 | ||
009a9dad | 676 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
677 | |
678 | evict_mem = bo->mem; | |
679 | evict_mem.mm_node = NULL; | |
eba67093 TH |
680 | evict_mem.bus.io_reserved_vm = false; |
681 | evict_mem.bus.io_reserved_count = 0; | |
ba4e7d97 | 682 | |
7cb7d1d7 JG |
683 | placement.num_placement = 0; |
684 | placement.num_busy_placement = 0; | |
ca262a99 JG |
685 | bdev->driver->evict_flags(bo, &placement); |
686 | ret = ttm_bo_mem_space(bo, &placement, &evict_mem, interruptible, | |
97a875cb | 687 | no_wait_gpu); |
ba4e7d97 | 688 | if (ret) { |
fb53f862 | 689 | if (ret != -ERESTARTSYS) { |
25d0479a JP |
690 | pr_err("Failed to find memory space for buffer 0x%p eviction\n", |
691 | bo); | |
fb53f862 JG |
692 | ttm_bo_mem_space_debug(bo, &placement); |
693 | } | |
ba4e7d97 TH |
694 | goto out; |
695 | } | |
696 | ||
697 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, interruptible, | |
97a875cb | 698 | no_wait_gpu); |
ba4e7d97 | 699 | if (ret) { |
98ffc415 | 700 | if (ret != -ERESTARTSYS) |
25d0479a | 701 | pr_err("Buffer eviction failed\n"); |
42311ff9 | 702 | ttm_bo_mem_put(bo, &evict_mem); |
ba4e7d97 TH |
703 | goto out; |
704 | } | |
ca262a99 JG |
705 | bo->evicted = true; |
706 | out: | |
707 | return ret; | |
708 | } | |
709 | ||
710 | static int ttm_mem_evict_first(struct ttm_bo_device *bdev, | |
711 | uint32_t mem_type, | |
e300180f | 712 | const struct ttm_place *place, |
97a875cb | 713 | bool interruptible, |
9d87fa21 | 714 | bool no_wait_gpu) |
ca262a99 JG |
715 | { |
716 | struct ttm_bo_global *glob = bdev->glob; | |
717 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
718 | struct ttm_buffer_object *bo; | |
e7ab2019 | 719 | int ret = -EBUSY, put_count; |
ba4e7d97 | 720 | |
a987fcaa | 721 | spin_lock(&glob->lru_lock); |
e7ab2019 | 722 | list_for_each_entry(bo, &man->lru, lru) { |
0eff2a24 | 723 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
e300180f MD |
724 | if (!ret) { |
725 | if (place && (place->fpfn || place->lpfn)) { | |
726 | /* Don't evict this BO if it's outside of the | |
727 | * requested placement range | |
728 | */ | |
729 | if (place->fpfn >= (bo->mem.start + bo->mem.size) || | |
730 | (place->lpfn && place->lpfn <= bo->mem.start)) { | |
731 | __ttm_bo_unreserve(bo); | |
732 | ret = -EBUSY; | |
733 | continue; | |
734 | } | |
735 | } | |
736 | ||
e7ab2019 | 737 | break; |
e300180f | 738 | } |
e7ab2019 ML |
739 | } |
740 | ||
741 | if (ret) { | |
9c51ba1d | 742 | spin_unlock(&glob->lru_lock); |
e7ab2019 | 743 | return ret; |
9c51ba1d TH |
744 | } |
745 | ||
ca262a99 | 746 | kref_get(&bo->list_kref); |
9c51ba1d | 747 | |
e1efc9b6 | 748 | if (!list_empty(&bo->ddestroy)) { |
e7ab2019 ML |
749 | ret = ttm_bo_cleanup_refs_and_unlock(bo, interruptible, |
750 | no_wait_gpu); | |
e1efc9b6 | 751 | kref_put(&bo->list_kref, ttm_bo_release_list); |
b8e902f2 | 752 | return ret; |
e1efc9b6 TH |
753 | } |
754 | ||
9c51ba1d | 755 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 756 | spin_unlock(&glob->lru_lock); |
9c51ba1d TH |
757 | |
758 | BUG_ON(ret != 0); | |
759 | ||
d6ea8886 | 760 | ttm_bo_list_ref_sub(bo, put_count, true); |
9c51ba1d | 761 | |
97a875cb | 762 | ret = ttm_bo_evict(bo, interruptible, no_wait_gpu); |
ca262a99 | 763 | ttm_bo_unreserve(bo); |
9c51ba1d | 764 | |
ca262a99 | 765 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
766 | return ret; |
767 | } | |
768 | ||
42311ff9 BS |
769 | void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem) |
770 | { | |
d961db75 | 771 | struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type]; |
42311ff9 | 772 | |
d961db75 BS |
773 | if (mem->mm_node) |
774 | (*man->func->put_node)(man, mem); | |
42311ff9 BS |
775 | } |
776 | EXPORT_SYMBOL(ttm_bo_mem_put); | |
777 | ||
ba4e7d97 TH |
778 | /** |
779 | * Repeatedly evict memory from the LRU for @mem_type until we create enough | |
780 | * space, or we've evicted everything and there isn't enough space. | |
781 | */ | |
ca262a99 JG |
782 | static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, |
783 | uint32_t mem_type, | |
f1217ed0 | 784 | const struct ttm_place *place, |
ca262a99 | 785 | struct ttm_mem_reg *mem, |
9d87fa21 | 786 | bool interruptible, |
9d87fa21 | 787 | bool no_wait_gpu) |
ba4e7d97 | 788 | { |
ca262a99 | 789 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 | 790 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
ba4e7d97 TH |
791 | int ret; |
792 | ||
ba4e7d97 | 793 | do { |
f1217ed0 | 794 | ret = (*man->func->get_node)(man, bo, place, mem); |
ca262a99 JG |
795 | if (unlikely(ret != 0)) |
796 | return ret; | |
d961db75 | 797 | if (mem->mm_node) |
ba4e7d97 | 798 | break; |
e300180f | 799 | ret = ttm_mem_evict_first(bdev, mem_type, place, |
97a875cb | 800 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
801 | if (unlikely(ret != 0)) |
802 | return ret; | |
ba4e7d97 | 803 | } while (1); |
d961db75 | 804 | if (mem->mm_node == NULL) |
ba4e7d97 | 805 | return -ENOMEM; |
ba4e7d97 TH |
806 | mem->mem_type = mem_type; |
807 | return 0; | |
808 | } | |
809 | ||
ae3e8122 TH |
810 | static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man, |
811 | uint32_t cur_placement, | |
812 | uint32_t proposed_placement) | |
813 | { | |
814 | uint32_t caching = proposed_placement & TTM_PL_MASK_CACHING; | |
815 | uint32_t result = proposed_placement & ~TTM_PL_MASK_CACHING; | |
816 | ||
817 | /** | |
818 | * Keep current caching if possible. | |
819 | */ | |
820 | ||
821 | if ((cur_placement & caching) != 0) | |
822 | result |= (cur_placement & caching); | |
823 | else if ((man->default_caching & caching) != 0) | |
824 | result |= man->default_caching; | |
825 | else if ((TTM_PL_FLAG_CACHED & caching) != 0) | |
826 | result |= TTM_PL_FLAG_CACHED; | |
827 | else if ((TTM_PL_FLAG_WC & caching) != 0) | |
828 | result |= TTM_PL_FLAG_WC; | |
829 | else if ((TTM_PL_FLAG_UNCACHED & caching) != 0) | |
830 | result |= TTM_PL_FLAG_UNCACHED; | |
831 | ||
832 | return result; | |
833 | } | |
834 | ||
ba4e7d97 | 835 | static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man, |
ba4e7d97 | 836 | uint32_t mem_type, |
f1217ed0 | 837 | const struct ttm_place *place, |
ae3e8122 | 838 | uint32_t *masked_placement) |
ba4e7d97 TH |
839 | { |
840 | uint32_t cur_flags = ttm_bo_type_flags(mem_type); | |
841 | ||
f1217ed0 | 842 | if ((cur_flags & place->flags & TTM_PL_MASK_MEM) == 0) |
ba4e7d97 TH |
843 | return false; |
844 | ||
f1217ed0 | 845 | if ((place->flags & man->available_caching) == 0) |
ba4e7d97 | 846 | return false; |
ba4e7d97 | 847 | |
f1217ed0 | 848 | cur_flags |= (place->flags & man->available_caching); |
ae3e8122 TH |
849 | |
850 | *masked_placement = cur_flags; | |
ba4e7d97 TH |
851 | return true; |
852 | } | |
853 | ||
854 | /** | |
855 | * Creates space for memory region @mem according to its type. | |
856 | * | |
857 | * This function first searches for free space in compatible memory types in | |
858 | * the priority order defined by the driver. If free space isn't found, then | |
859 | * ttm_bo_mem_force_space is attempted in priority order to evict and find | |
860 | * space. | |
861 | */ | |
862 | int ttm_bo_mem_space(struct ttm_buffer_object *bo, | |
ca262a99 JG |
863 | struct ttm_placement *placement, |
864 | struct ttm_mem_reg *mem, | |
97a875cb | 865 | bool interruptible, |
9d87fa21 | 866 | bool no_wait_gpu) |
ba4e7d97 TH |
867 | { |
868 | struct ttm_bo_device *bdev = bo->bdev; | |
869 | struct ttm_mem_type_manager *man; | |
ba4e7d97 TH |
870 | uint32_t mem_type = TTM_PL_SYSTEM; |
871 | uint32_t cur_flags = 0; | |
872 | bool type_found = false; | |
873 | bool type_ok = false; | |
98ffc415 | 874 | bool has_erestartsys = false; |
ca262a99 | 875 | int i, ret; |
ba4e7d97 TH |
876 | |
877 | mem->mm_node = NULL; | |
b6637526 | 878 | for (i = 0; i < placement->num_placement; ++i) { |
f1217ed0 CK |
879 | const struct ttm_place *place = &placement->placement[i]; |
880 | ||
881 | ret = ttm_mem_type_from_place(place, &mem_type); | |
ca262a99 JG |
882 | if (ret) |
883 | return ret; | |
ba4e7d97 TH |
884 | man = &bdev->man[mem_type]; |
885 | ||
f1217ed0 | 886 | type_ok = ttm_bo_mt_compatible(man, mem_type, place, |
ca262a99 | 887 | &cur_flags); |
ba4e7d97 TH |
888 | |
889 | if (!type_ok) | |
890 | continue; | |
891 | ||
ae3e8122 TH |
892 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
893 | cur_flags); | |
ca262a99 JG |
894 | /* |
895 | * Use the access and other non-mapping-related flag bits from | |
896 | * the memory placement flags to the current flags | |
897 | */ | |
f1217ed0 | 898 | ttm_flag_masked(&cur_flags, place->flags, |
ca262a99 | 899 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 900 | |
ba4e7d97 TH |
901 | if (mem_type == TTM_PL_SYSTEM) |
902 | break; | |
903 | ||
904 | if (man->has_type && man->use_type) { | |
905 | type_found = true; | |
f1217ed0 | 906 | ret = (*man->func->get_node)(man, bo, place, mem); |
ca262a99 JG |
907 | if (unlikely(ret)) |
908 | return ret; | |
ba4e7d97 | 909 | } |
d961db75 | 910 | if (mem->mm_node) |
ba4e7d97 TH |
911 | break; |
912 | } | |
913 | ||
d961db75 | 914 | if ((type_ok && (mem_type == TTM_PL_SYSTEM)) || mem->mm_node) { |
ba4e7d97 TH |
915 | mem->mem_type = mem_type; |
916 | mem->placement = cur_flags; | |
917 | return 0; | |
918 | } | |
919 | ||
920 | if (!type_found) | |
921 | return -EINVAL; | |
922 | ||
b6637526 | 923 | for (i = 0; i < placement->num_busy_placement; ++i) { |
f1217ed0 CK |
924 | const struct ttm_place *place = &placement->busy_placement[i]; |
925 | ||
926 | ret = ttm_mem_type_from_place(place, &mem_type); | |
ca262a99 JG |
927 | if (ret) |
928 | return ret; | |
ba4e7d97 | 929 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
930 | if (!man->has_type) |
931 | continue; | |
f1217ed0 | 932 | if (!ttm_bo_mt_compatible(man, mem_type, place, &cur_flags)) |
ba4e7d97 TH |
933 | continue; |
934 | ||
ae3e8122 TH |
935 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
936 | cur_flags); | |
ca262a99 JG |
937 | /* |
938 | * Use the access and other non-mapping-related flag bits from | |
939 | * the memory placement flags to the current flags | |
940 | */ | |
f1217ed0 | 941 | ttm_flag_masked(&cur_flags, place->flags, |
ca262a99 | 942 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 943 | |
0eaddb28 TH |
944 | if (mem_type == TTM_PL_SYSTEM) { |
945 | mem->mem_type = mem_type; | |
946 | mem->placement = cur_flags; | |
947 | mem->mm_node = NULL; | |
948 | return 0; | |
949 | } | |
950 | ||
f1217ed0 | 951 | ret = ttm_bo_mem_force_space(bo, mem_type, place, mem, |
97a875cb | 952 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
953 | if (ret == 0 && mem->mm_node) { |
954 | mem->placement = cur_flags; | |
955 | return 0; | |
956 | } | |
98ffc415 TH |
957 | if (ret == -ERESTARTSYS) |
958 | has_erestartsys = true; | |
ba4e7d97 | 959 | } |
98ffc415 | 960 | ret = (has_erestartsys) ? -ERESTARTSYS : -ENOMEM; |
ba4e7d97 TH |
961 | return ret; |
962 | } | |
963 | EXPORT_SYMBOL(ttm_bo_mem_space); | |
964 | ||
6e87fa48 | 965 | static int ttm_bo_move_buffer(struct ttm_buffer_object *bo, |
ca262a99 | 966 | struct ttm_placement *placement, |
97a875cb | 967 | bool interruptible, |
9d87fa21 | 968 | bool no_wait_gpu) |
ba4e7d97 | 969 | { |
ba4e7d97 TH |
970 | int ret = 0; |
971 | struct ttm_mem_reg mem; | |
972 | ||
009a9dad | 973 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
974 | |
975 | /* | |
976 | * FIXME: It's possible to pipeline buffer moves. | |
977 | * Have the driver move function wait for idle when necessary, | |
978 | * instead of doing it here. | |
979 | */ | |
1717c0e2 | 980 | ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); |
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 | |
ca262a99 | 1009 | for (i = 0; i < placement->num_placement; i++) { |
f1217ed0 | 1010 | const struct ttm_place *heap = &placement->placement[i]; |
9ace2ef7 | 1011 | if (mem->mm_node && |
f1217ed0 | 1012 | (mem->start < heap->fpfn || |
9ace2ef7 | 1013 | (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) |
f1217ed0 CK |
1014 | continue; |
1015 | ||
1016 | *new_flags = heap->flags; | |
59c8e663 TH |
1017 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && |
1018 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1019 | return true; | |
1020 | } | |
1021 | ||
1022 | for (i = 0; i < placement->num_busy_placement; i++) { | |
f1217ed0 | 1023 | const struct ttm_place *heap = &placement->busy_placement[i]; |
9ace2ef7 | 1024 | if (mem->mm_node && |
f1217ed0 | 1025 | (mem->start < heap->fpfn || |
9ace2ef7 | 1026 | (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) |
f1217ed0 CK |
1027 | continue; |
1028 | ||
1029 | *new_flags = heap->flags; | |
59c8e663 TH |
1030 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && |
1031 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1032 | return true; | |
ca262a99 | 1033 | } |
59c8e663 TH |
1034 | |
1035 | return false; | |
ba4e7d97 TH |
1036 | } |
1037 | ||
09855acb JG |
1038 | int ttm_bo_validate(struct ttm_buffer_object *bo, |
1039 | struct ttm_placement *placement, | |
97a875cb | 1040 | bool interruptible, |
9d87fa21 | 1041 | bool no_wait_gpu) |
ba4e7d97 TH |
1042 | { |
1043 | int ret; | |
59c8e663 | 1044 | uint32_t new_flags; |
ba4e7d97 | 1045 | |
009a9dad | 1046 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
1047 | /* |
1048 | * Check whether we need to move buffer. | |
1049 | */ | |
59c8e663 | 1050 | if (!ttm_bo_mem_compat(placement, &bo->mem, &new_flags)) { |
97a875cb ML |
1051 | ret = ttm_bo_move_buffer(bo, placement, interruptible, |
1052 | no_wait_gpu); | |
ca262a99 | 1053 | if (ret) |
ba4e7d97 | 1054 | return ret; |
ca262a99 JG |
1055 | } else { |
1056 | /* | |
1057 | * Use the access and other non-mapping-related flag bits from | |
1058 | * the compatible memory placement flags to the active flags | |
1059 | */ | |
59c8e663 | 1060 | ttm_flag_masked(&bo->mem.placement, new_flags, |
ca262a99 | 1061 | ~TTM_PL_MASK_MEMTYPE); |
ba4e7d97 | 1062 | } |
ba4e7d97 TH |
1063 | /* |
1064 | * We might need to add a TTM. | |
1065 | */ | |
ba4e7d97 TH |
1066 | if (bo->mem.mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { |
1067 | ret = ttm_bo_add_ttm(bo, true); | |
1068 | if (ret) | |
1069 | return ret; | |
1070 | } | |
ba4e7d97 TH |
1071 | return 0; |
1072 | } | |
09855acb | 1073 | EXPORT_SYMBOL(ttm_bo_validate); |
ba4e7d97 | 1074 | |
09855acb JG |
1075 | int ttm_bo_init(struct ttm_bo_device *bdev, |
1076 | struct ttm_buffer_object *bo, | |
1077 | unsigned long size, | |
1078 | enum ttm_bo_type type, | |
1079 | struct ttm_placement *placement, | |
1080 | uint32_t page_alignment, | |
09855acb | 1081 | bool interruptible, |
5df23979 | 1082 | struct file *persistent_swap_storage, |
09855acb | 1083 | size_t acc_size, |
129b78bf | 1084 | struct sg_table *sg, |
f4f4e3e3 | 1085 | struct reservation_object *resv, |
09855acb | 1086 | void (*destroy) (struct ttm_buffer_object *)) |
ba4e7d97 | 1087 | { |
09855acb | 1088 | int ret = 0; |
ba4e7d97 | 1089 | unsigned long num_pages; |
57de4ba9 | 1090 | struct ttm_mem_global *mem_glob = bdev->glob->mem_glob; |
5e338405 | 1091 | bool locked; |
57de4ba9 JG |
1092 | |
1093 | ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false); | |
1094 | if (ret) { | |
25d0479a | 1095 | pr_err("Out of kernel memory\n"); |
57de4ba9 JG |
1096 | if (destroy) |
1097 | (*destroy)(bo); | |
1098 | else | |
1099 | kfree(bo); | |
1100 | return -ENOMEM; | |
1101 | } | |
ba4e7d97 | 1102 | |
ba4e7d97 TH |
1103 | num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; |
1104 | if (num_pages == 0) { | |
25d0479a | 1105 | pr_err("Illegal buffer object size\n"); |
7dfbbdcf TH |
1106 | if (destroy) |
1107 | (*destroy)(bo); | |
1108 | else | |
1109 | kfree(bo); | |
a393c730 | 1110 | ttm_mem_global_free(mem_glob, acc_size); |
ba4e7d97 TH |
1111 | return -EINVAL; |
1112 | } | |
1113 | bo->destroy = destroy; | |
1114 | ||
ba4e7d97 TH |
1115 | kref_init(&bo->kref); |
1116 | kref_init(&bo->list_kref); | |
1117 | atomic_set(&bo->cpu_writers, 0); | |
ba4e7d97 TH |
1118 | INIT_LIST_HEAD(&bo->lru); |
1119 | INIT_LIST_HEAD(&bo->ddestroy); | |
1120 | INIT_LIST_HEAD(&bo->swap); | |
eba67093 | 1121 | INIT_LIST_HEAD(&bo->io_reserve_lru); |
c58f009e | 1122 | mutex_init(&bo->wu_mutex); |
ba4e7d97 | 1123 | bo->bdev = bdev; |
a987fcaa | 1124 | bo->glob = bdev->glob; |
ba4e7d97 TH |
1125 | bo->type = type; |
1126 | bo->num_pages = num_pages; | |
eb6d2c39 | 1127 | bo->mem.size = num_pages << PAGE_SHIFT; |
ba4e7d97 TH |
1128 | bo->mem.mem_type = TTM_PL_SYSTEM; |
1129 | bo->mem.num_pages = bo->num_pages; | |
1130 | bo->mem.mm_node = NULL; | |
1131 | bo->mem.page_alignment = page_alignment; | |
eba67093 TH |
1132 | bo->mem.bus.io_reserved_vm = false; |
1133 | bo->mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
1134 | bo->priv_flags = 0; |
1135 | bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED); | |
5df23979 | 1136 | bo->persistent_swap_storage = persistent_swap_storage; |
ba4e7d97 | 1137 | bo->acc_size = acc_size; |
129b78bf | 1138 | bo->sg = sg; |
f4f4e3e3 ML |
1139 | if (resv) { |
1140 | bo->resv = resv; | |
1141 | lockdep_assert_held(&bo->resv->lock.base); | |
1142 | } else { | |
1143 | bo->resv = &bo->ttm_resv; | |
1144 | reservation_object_init(&bo->ttm_resv); | |
1145 | } | |
a987fcaa | 1146 | atomic_inc(&bo->glob->bo_count); |
72525b3f | 1147 | drm_vma_node_reset(&bo->vma_node); |
ba4e7d97 | 1148 | |
ba4e7d97 TH |
1149 | /* |
1150 | * For ttm_bo_type_device buffers, allocate | |
1151 | * address space from the device. | |
1152 | */ | |
f1217ed0 CK |
1153 | if (bo->type == ttm_bo_type_device || |
1154 | bo->type == ttm_bo_type_sg) | |
abf19035 DH |
1155 | ret = drm_vma_offset_add(&bdev->vma_manager, &bo->vma_node, |
1156 | bo->mem.num_pages); | |
ba4e7d97 | 1157 | |
f4f4e3e3 ML |
1158 | /* passed reservation objects should already be locked, |
1159 | * since otherwise lockdep will be angered in radeon. | |
1160 | */ | |
1161 | if (!resv) { | |
1162 | locked = ww_mutex_trylock(&bo->resv->lock); | |
1163 | WARN_ON(!locked); | |
1164 | } | |
ba4e7d97 | 1165 | |
5e338405 ML |
1166 | if (likely(!ret)) |
1167 | ret = ttm_bo_validate(bo, placement, interruptible, false); | |
ba4e7d97 | 1168 | |
f4f4e3e3 ML |
1169 | if (!resv) |
1170 | ttm_bo_unreserve(bo); | |
5e338405 ML |
1171 | |
1172 | if (unlikely(ret)) | |
1173 | ttm_bo_unref(&bo); | |
ba4e7d97 TH |
1174 | |
1175 | return ret; | |
1176 | } | |
09855acb | 1177 | EXPORT_SYMBOL(ttm_bo_init); |
ba4e7d97 | 1178 | |
57de4ba9 JG |
1179 | size_t ttm_bo_acc_size(struct ttm_bo_device *bdev, |
1180 | unsigned long bo_size, | |
1181 | unsigned struct_size) | |
ba4e7d97 | 1182 | { |
57de4ba9 JG |
1183 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; |
1184 | size_t size = 0; | |
ba4e7d97 | 1185 | |
57de4ba9 JG |
1186 | size += ttm_round_pot(struct_size); |
1187 | size += PAGE_ALIGN(npages * sizeof(void *)); | |
1188 | size += ttm_round_pot(sizeof(struct ttm_tt)); | |
1189 | return size; | |
ba4e7d97 | 1190 | } |
57de4ba9 JG |
1191 | EXPORT_SYMBOL(ttm_bo_acc_size); |
1192 | ||
1193 | size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev, | |
1194 | unsigned long bo_size, | |
1195 | unsigned struct_size) | |
1196 | { | |
1197 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; | |
1198 | size_t size = 0; | |
1199 | ||
1200 | size += ttm_round_pot(struct_size); | |
1201 | size += PAGE_ALIGN(npages * sizeof(void *)); | |
1202 | size += PAGE_ALIGN(npages * sizeof(dma_addr_t)); | |
1203 | size += ttm_round_pot(sizeof(struct ttm_dma_tt)); | |
1204 | return size; | |
1205 | } | |
1206 | EXPORT_SYMBOL(ttm_bo_dma_acc_size); | |
ba4e7d97 | 1207 | |
09855acb JG |
1208 | int ttm_bo_create(struct ttm_bo_device *bdev, |
1209 | unsigned long size, | |
1210 | enum ttm_bo_type type, | |
1211 | struct ttm_placement *placement, | |
1212 | uint32_t page_alignment, | |
09855acb | 1213 | bool interruptible, |
5df23979 | 1214 | struct file *persistent_swap_storage, |
09855acb | 1215 | struct ttm_buffer_object **p_bo) |
ba4e7d97 TH |
1216 | { |
1217 | struct ttm_buffer_object *bo; | |
57de4ba9 | 1218 | size_t acc_size; |
ca262a99 | 1219 | int ret; |
ba4e7d97 | 1220 | |
ba4e7d97 | 1221 | bo = kzalloc(sizeof(*bo), GFP_KERNEL); |
a393c730 | 1222 | if (unlikely(bo == NULL)) |
ba4e7d97 | 1223 | return -ENOMEM; |
ba4e7d97 | 1224 | |
a393c730 | 1225 | acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct ttm_buffer_object)); |
09855acb | 1226 | ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment, |
0b91c4a1 | 1227 | interruptible, persistent_swap_storage, acc_size, |
f4f4e3e3 | 1228 | NULL, NULL, NULL); |
ba4e7d97 TH |
1229 | if (likely(ret == 0)) |
1230 | *p_bo = bo; | |
1231 | ||
1232 | return ret; | |
1233 | } | |
4d798937 | 1234 | EXPORT_SYMBOL(ttm_bo_create); |
ba4e7d97 | 1235 | |
ba4e7d97 | 1236 | static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, |
ca262a99 | 1237 | unsigned mem_type, bool allow_errors) |
ba4e7d97 | 1238 | { |
ca262a99 | 1239 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
a987fcaa | 1240 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 | 1241 | int ret; |
ba4e7d97 TH |
1242 | |
1243 | /* | |
1244 | * Can't use standard list traversal since we're unlocking. | |
1245 | */ | |
1246 | ||
a987fcaa | 1247 | spin_lock(&glob->lru_lock); |
ca262a99 | 1248 | while (!list_empty(&man->lru)) { |
a987fcaa | 1249 | spin_unlock(&glob->lru_lock); |
e300180f | 1250 | ret = ttm_mem_evict_first(bdev, mem_type, NULL, false, false); |
ca262a99 JG |
1251 | if (ret) { |
1252 | if (allow_errors) { | |
1253 | return ret; | |
1254 | } else { | |
25d0479a | 1255 | pr_err("Cleanup eviction failed\n"); |
ca262a99 JG |
1256 | } |
1257 | } | |
a987fcaa | 1258 | spin_lock(&glob->lru_lock); |
ba4e7d97 | 1259 | } |
a987fcaa | 1260 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
1261 | return 0; |
1262 | } | |
1263 | ||
1264 | int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1265 | { | |
c96e7c7a | 1266 | struct ttm_mem_type_manager *man; |
ba4e7d97 TH |
1267 | int ret = -EINVAL; |
1268 | ||
1269 | if (mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1270 | pr_err("Illegal memory type %d\n", mem_type); |
ba4e7d97 TH |
1271 | return ret; |
1272 | } | |
c96e7c7a | 1273 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
1274 | |
1275 | if (!man->has_type) { | |
25d0479a JP |
1276 | pr_err("Trying to take down uninitialized memory manager type %u\n", |
1277 | mem_type); | |
ba4e7d97 TH |
1278 | return ret; |
1279 | } | |
1280 | ||
1281 | man->use_type = false; | |
1282 | man->has_type = false; | |
1283 | ||
1284 | ret = 0; | |
1285 | if (mem_type > 0) { | |
ca262a99 | 1286 | ttm_bo_force_list_clean(bdev, mem_type, false); |
ba4e7d97 | 1287 | |
d961db75 | 1288 | ret = (*man->func->takedown)(man); |
ba4e7d97 TH |
1289 | } |
1290 | ||
1291 | return ret; | |
1292 | } | |
1293 | EXPORT_SYMBOL(ttm_bo_clean_mm); | |
1294 | ||
1295 | int ttm_bo_evict_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1296 | { | |
1297 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
1298 | ||
1299 | if (mem_type == 0 || mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1300 | pr_err("Illegal memory manager memory type %u\n", mem_type); |
ba4e7d97 TH |
1301 | return -EINVAL; |
1302 | } | |
1303 | ||
1304 | if (!man->has_type) { | |
25d0479a | 1305 | pr_err("Memory type %u has not been initialized\n", mem_type); |
ba4e7d97 TH |
1306 | return 0; |
1307 | } | |
1308 | ||
ca262a99 | 1309 | return ttm_bo_force_list_clean(bdev, mem_type, true); |
ba4e7d97 TH |
1310 | } |
1311 | EXPORT_SYMBOL(ttm_bo_evict_mm); | |
1312 | ||
1313 | int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type, | |
ca262a99 | 1314 | unsigned long p_size) |
ba4e7d97 TH |
1315 | { |
1316 | int ret = -EINVAL; | |
1317 | struct ttm_mem_type_manager *man; | |
1318 | ||
dbc4a5b8 | 1319 | BUG_ON(type >= TTM_NUM_MEM_TYPES); |
ba4e7d97 | 1320 | man = &bdev->man[type]; |
dbc4a5b8 | 1321 | BUG_ON(man->has_type); |
eba67093 TH |
1322 | man->io_reserve_fastpath = true; |
1323 | man->use_io_reserve_lru = false; | |
1324 | mutex_init(&man->io_reserve_mutex); | |
1325 | INIT_LIST_HEAD(&man->io_reserve_lru); | |
ba4e7d97 TH |
1326 | |
1327 | ret = bdev->driver->init_mem_type(bdev, type, man); | |
1328 | if (ret) | |
1329 | return ret; | |
d961db75 | 1330 | man->bdev = bdev; |
ba4e7d97 TH |
1331 | |
1332 | ret = 0; | |
1333 | if (type != TTM_PL_SYSTEM) { | |
d961db75 | 1334 | ret = (*man->func->init)(man, p_size); |
ba4e7d97 TH |
1335 | if (ret) |
1336 | return ret; | |
1337 | } | |
1338 | man->has_type = true; | |
1339 | man->use_type = true; | |
1340 | man->size = p_size; | |
1341 | ||
1342 | INIT_LIST_HEAD(&man->lru); | |
1343 | ||
1344 | return 0; | |
1345 | } | |
1346 | EXPORT_SYMBOL(ttm_bo_init_mm); | |
1347 | ||
a987fcaa TH |
1348 | static void ttm_bo_global_kobj_release(struct kobject *kobj) |
1349 | { | |
1350 | struct ttm_bo_global *glob = | |
1351 | container_of(kobj, struct ttm_bo_global, kobj); | |
1352 | ||
a987fcaa TH |
1353 | ttm_mem_unregister_shrink(glob->mem_glob, &glob->shrink); |
1354 | __free_page(glob->dummy_read_page); | |
1355 | kfree(glob); | |
1356 | } | |
1357 | ||
ba4420c2 | 1358 | void ttm_bo_global_release(struct drm_global_reference *ref) |
a987fcaa TH |
1359 | { |
1360 | struct ttm_bo_global *glob = ref->object; | |
1361 | ||
1362 | kobject_del(&glob->kobj); | |
1363 | kobject_put(&glob->kobj); | |
1364 | } | |
1365 | EXPORT_SYMBOL(ttm_bo_global_release); | |
1366 | ||
ba4420c2 | 1367 | int ttm_bo_global_init(struct drm_global_reference *ref) |
a987fcaa TH |
1368 | { |
1369 | struct ttm_bo_global_ref *bo_ref = | |
1370 | container_of(ref, struct ttm_bo_global_ref, ref); | |
1371 | struct ttm_bo_global *glob = ref->object; | |
1372 | int ret; | |
1373 | ||
1374 | mutex_init(&glob->device_list_mutex); | |
1375 | spin_lock_init(&glob->lru_lock); | |
1376 | glob->mem_glob = bo_ref->mem_glob; | |
1377 | glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); | |
1378 | ||
1379 | if (unlikely(glob->dummy_read_page == NULL)) { | |
1380 | ret = -ENOMEM; | |
1381 | goto out_no_drp; | |
1382 | } | |
1383 | ||
1384 | INIT_LIST_HEAD(&glob->swap_lru); | |
1385 | INIT_LIST_HEAD(&glob->device_list); | |
1386 | ||
1387 | ttm_mem_init_shrink(&glob->shrink, ttm_bo_swapout); | |
1388 | ret = ttm_mem_register_shrink(glob->mem_glob, &glob->shrink); | |
1389 | if (unlikely(ret != 0)) { | |
25d0479a | 1390 | pr_err("Could not register buffer object swapout\n"); |
a987fcaa TH |
1391 | goto out_no_shrink; |
1392 | } | |
1393 | ||
a987fcaa TH |
1394 | atomic_set(&glob->bo_count, 0); |
1395 | ||
b642ed06 RD |
1396 | ret = kobject_init_and_add( |
1397 | &glob->kobj, &ttm_bo_glob_kobj_type, ttm_get_kobj(), "buffer_objects"); | |
a987fcaa TH |
1398 | if (unlikely(ret != 0)) |
1399 | kobject_put(&glob->kobj); | |
1400 | return ret; | |
1401 | out_no_shrink: | |
1402 | __free_page(glob->dummy_read_page); | |
1403 | out_no_drp: | |
1404 | kfree(glob); | |
1405 | return ret; | |
1406 | } | |
1407 | EXPORT_SYMBOL(ttm_bo_global_init); | |
1408 | ||
1409 | ||
ba4e7d97 TH |
1410 | int ttm_bo_device_release(struct ttm_bo_device *bdev) |
1411 | { | |
1412 | int ret = 0; | |
1413 | unsigned i = TTM_NUM_MEM_TYPES; | |
1414 | struct ttm_mem_type_manager *man; | |
a987fcaa | 1415 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 TH |
1416 | |
1417 | while (i--) { | |
1418 | man = &bdev->man[i]; | |
1419 | if (man->has_type) { | |
1420 | man->use_type = false; | |
1421 | if ((i != TTM_PL_SYSTEM) && ttm_bo_clean_mm(bdev, i)) { | |
1422 | ret = -EBUSY; | |
25d0479a JP |
1423 | pr_err("DRM memory manager type %d is not clean\n", |
1424 | i); | |
ba4e7d97 TH |
1425 | } |
1426 | man->has_type = false; | |
1427 | } | |
1428 | } | |
1429 | ||
a987fcaa TH |
1430 | mutex_lock(&glob->device_list_mutex); |
1431 | list_del(&bdev->device_list); | |
1432 | mutex_unlock(&glob->device_list_mutex); | |
1433 | ||
f094cfc6 | 1434 | cancel_delayed_work_sync(&bdev->wq); |
ba4e7d97 TH |
1435 | |
1436 | while (ttm_bo_delayed_delete(bdev, true)) | |
1437 | ; | |
1438 | ||
a987fcaa | 1439 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
1440 | if (list_empty(&bdev->ddestroy)) |
1441 | TTM_DEBUG("Delayed destroy list was clean\n"); | |
1442 | ||
1443 | if (list_empty(&bdev->man[0].lru)) | |
1444 | TTM_DEBUG("Swap list was clean\n"); | |
a987fcaa | 1445 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1446 | |
72525b3f | 1447 | drm_vma_offset_manager_destroy(&bdev->vma_manager); |
ba4e7d97 | 1448 | |
ba4e7d97 TH |
1449 | return ret; |
1450 | } | |
1451 | EXPORT_SYMBOL(ttm_bo_device_release); | |
1452 | ||
ba4e7d97 | 1453 | int ttm_bo_device_init(struct ttm_bo_device *bdev, |
a987fcaa TH |
1454 | struct ttm_bo_global *glob, |
1455 | struct ttm_bo_driver *driver, | |
44d847b7 | 1456 | struct address_space *mapping, |
51c8b407 | 1457 | uint64_t file_page_offset, |
ad49f501 | 1458 | bool need_dma32) |
ba4e7d97 TH |
1459 | { |
1460 | int ret = -EINVAL; | |
1461 | ||
ba4e7d97 | 1462 | bdev->driver = driver; |
ba4e7d97 TH |
1463 | |
1464 | memset(bdev->man, 0, sizeof(bdev->man)); | |
1465 | ||
ba4e7d97 TH |
1466 | /* |
1467 | * Initialize the system memory buffer type. | |
1468 | * Other types need to be driver / IOCTL initialized. | |
1469 | */ | |
ca262a99 | 1470 | ret = ttm_bo_init_mm(bdev, TTM_PL_SYSTEM, 0); |
ba4e7d97 | 1471 | if (unlikely(ret != 0)) |
a987fcaa | 1472 | goto out_no_sys; |
ba4e7d97 | 1473 | |
72525b3f DH |
1474 | drm_vma_offset_manager_init(&bdev->vma_manager, file_page_offset, |
1475 | 0x10000000); | |
ba4e7d97 | 1476 | INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue); |
ba4e7d97 | 1477 | INIT_LIST_HEAD(&bdev->ddestroy); |
44d847b7 | 1478 | bdev->dev_mapping = mapping; |
a987fcaa | 1479 | bdev->glob = glob; |
ad49f501 | 1480 | bdev->need_dma32 = need_dma32; |
65705962 | 1481 | bdev->val_seq = 0; |
a987fcaa TH |
1482 | mutex_lock(&glob->device_list_mutex); |
1483 | list_add_tail(&bdev->device_list, &glob->device_list); | |
1484 | mutex_unlock(&glob->device_list_mutex); | |
ba4e7d97 TH |
1485 | |
1486 | return 0; | |
a987fcaa | 1487 | out_no_sys: |
ba4e7d97 TH |
1488 | return ret; |
1489 | } | |
1490 | EXPORT_SYMBOL(ttm_bo_device_init); | |
1491 | ||
1492 | /* | |
1493 | * buffer object vm functions. | |
1494 | */ | |
1495 | ||
1496 | bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
1497 | { | |
1498 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
1499 | ||
1500 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) { | |
1501 | if (mem->mem_type == TTM_PL_SYSTEM) | |
1502 | return false; | |
1503 | ||
1504 | if (man->flags & TTM_MEMTYPE_FLAG_CMA) | |
1505 | return false; | |
1506 | ||
1507 | if (mem->placement & TTM_PL_FLAG_CACHED) | |
1508 | return false; | |
1509 | } | |
1510 | return true; | |
1511 | } | |
1512 | ||
eba67093 | 1513 | void ttm_bo_unmap_virtual_locked(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
1514 | { |
1515 | struct ttm_bo_device *bdev = bo->bdev; | |
ba4e7d97 | 1516 | |
51335df9 | 1517 | drm_vma_node_unmap(&bo->vma_node, bdev->dev_mapping); |
eba67093 | 1518 | ttm_mem_io_free_vm(bo); |
ba4e7d97 | 1519 | } |
eba67093 TH |
1520 | |
1521 | void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo) | |
1522 | { | |
1523 | struct ttm_bo_device *bdev = bo->bdev; | |
1524 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; | |
1525 | ||
1526 | ttm_mem_io_lock(man, false); | |
1527 | ttm_bo_unmap_virtual_locked(bo); | |
1528 | ttm_mem_io_unlock(man); | |
ba4e7d97 | 1529 | } |
eba67093 TH |
1530 | |
1531 | ||
e024e110 | 1532 | EXPORT_SYMBOL(ttm_bo_unmap_virtual); |
ba4e7d97 | 1533 | |
ba4e7d97 | 1534 | int ttm_bo_wait(struct ttm_buffer_object *bo, |
1717c0e2 | 1535 | bool lazy, bool interruptible, bool no_wait) |
ba4e7d97 | 1536 | { |
f2c24b83 ML |
1537 | struct reservation_object_list *fobj; |
1538 | struct reservation_object *resv; | |
1539 | struct fence *excl; | |
1540 | long timeout = 15 * HZ; | |
1541 | int i; | |
7040138f | 1542 | |
f2c24b83 ML |
1543 | resv = bo->resv; |
1544 | fobj = reservation_object_get_list(resv); | |
1545 | excl = reservation_object_get_excl(resv); | |
1546 | if (excl) { | |
1547 | if (!fence_is_signaled(excl)) { | |
1548 | if (no_wait) | |
1549 | return -EBUSY; | |
ba4e7d97 | 1550 | |
f2c24b83 ML |
1551 | timeout = fence_wait_timeout(excl, |
1552 | interruptible, timeout); | |
ba4e7d97 | 1553 | } |
f2c24b83 | 1554 | } |
ba4e7d97 | 1555 | |
f2c24b83 ML |
1556 | for (i = 0; fobj && timeout > 0 && i < fobj->shared_count; ++i) { |
1557 | struct fence *fence; | |
1558 | fence = rcu_dereference_protected(fobj->shared[i], | |
1559 | reservation_object_held(resv)); | |
ba4e7d97 | 1560 | |
f2c24b83 ML |
1561 | if (!fence_is_signaled(fence)) { |
1562 | if (no_wait) | |
1563 | return -EBUSY; | |
dd7cfd64 | 1564 | |
f2c24b83 ML |
1565 | timeout = fence_wait_timeout(fence, |
1566 | interruptible, timeout); | |
ba4e7d97 TH |
1567 | } |
1568 | } | |
f2c24b83 ML |
1569 | |
1570 | if (timeout < 0) | |
1571 | return timeout; | |
1572 | ||
1573 | if (timeout == 0) | |
1574 | return -EBUSY; | |
1575 | ||
1576 | reservation_object_add_excl_fence(resv, NULL); | |
1577 | clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); | |
1578 | return 0; | |
ba4e7d97 TH |
1579 | } |
1580 | EXPORT_SYMBOL(ttm_bo_wait); | |
1581 | ||
ba4e7d97 TH |
1582 | int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) |
1583 | { | |
1584 | int ret = 0; | |
1585 | ||
1586 | /* | |
8cfe92d6 | 1587 | * Using ttm_bo_reserve makes sure the lru lists are updated. |
ba4e7d97 TH |
1588 | */ |
1589 | ||
0eff2a24 | 1590 | ret = ttm_bo_reserve(bo, true, no_wait, false, NULL); |
ba4e7d97 TH |
1591 | if (unlikely(ret != 0)) |
1592 | return ret; | |
1717c0e2 | 1593 | ret = ttm_bo_wait(bo, false, true, no_wait); |
ba4e7d97 TH |
1594 | if (likely(ret == 0)) |
1595 | atomic_inc(&bo->cpu_writers); | |
1596 | ttm_bo_unreserve(bo); | |
1597 | return ret; | |
1598 | } | |
d1ede145 | 1599 | EXPORT_SYMBOL(ttm_bo_synccpu_write_grab); |
ba4e7d97 TH |
1600 | |
1601 | void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo) | |
1602 | { | |
654aa792 | 1603 | atomic_dec(&bo->cpu_writers); |
ba4e7d97 | 1604 | } |
d1ede145 | 1605 | EXPORT_SYMBOL(ttm_bo_synccpu_write_release); |
ba4e7d97 TH |
1606 | |
1607 | /** | |
1608 | * A buffer object shrink method that tries to swap out the first | |
1609 | * buffer object on the bo_global::swap_lru list. | |
1610 | */ | |
1611 | ||
1612 | static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) | |
1613 | { | |
a987fcaa TH |
1614 | struct ttm_bo_global *glob = |
1615 | container_of(shrink, struct ttm_bo_global, shrink); | |
ba4e7d97 TH |
1616 | struct ttm_buffer_object *bo; |
1617 | int ret = -EBUSY; | |
1618 | int put_count; | |
1619 | uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); | |
1620 | ||
a987fcaa | 1621 | spin_lock(&glob->lru_lock); |
2b7b3ad2 | 1622 | list_for_each_entry(bo, &glob->swap_lru, swap) { |
0eff2a24 | 1623 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
2b7b3ad2 ML |
1624 | if (!ret) |
1625 | break; | |
1626 | } | |
85b144f8 | 1627 | |
2b7b3ad2 ML |
1628 | if (ret) { |
1629 | spin_unlock(&glob->lru_lock); | |
1630 | return ret; | |
1631 | } | |
e1efc9b6 | 1632 | |
2b7b3ad2 | 1633 | kref_get(&bo->list_kref); |
ba4e7d97 | 1634 | |
2b7b3ad2 ML |
1635 | if (!list_empty(&bo->ddestroy)) { |
1636 | ret = ttm_bo_cleanup_refs_and_unlock(bo, false, false); | |
1637 | kref_put(&bo->list_kref, ttm_bo_release_list); | |
1638 | return ret; | |
ba4e7d97 TH |
1639 | } |
1640 | ||
ba4e7d97 | 1641 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 1642 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1643 | |
d6ea8886 | 1644 | ttm_bo_list_ref_sub(bo, put_count, true); |
ba4e7d97 TH |
1645 | |
1646 | /** | |
1647 | * Wait for GPU, then move to system cached. | |
1648 | */ | |
1649 | ||
1717c0e2 | 1650 | ret = ttm_bo_wait(bo, false, false, false); |
ba4e7d97 TH |
1651 | |
1652 | if (unlikely(ret != 0)) | |
1653 | goto out; | |
1654 | ||
1655 | if ((bo->mem.placement & swap_placement) != swap_placement) { | |
1656 | struct ttm_mem_reg evict_mem; | |
1657 | ||
1658 | evict_mem = bo->mem; | |
1659 | evict_mem.mm_node = NULL; | |
1660 | evict_mem.placement = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED; | |
1661 | evict_mem.mem_type = TTM_PL_SYSTEM; | |
1662 | ||
1663 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, | |
97a875cb | 1664 | false, false); |
ba4e7d97 TH |
1665 | if (unlikely(ret != 0)) |
1666 | goto out; | |
1667 | } | |
1668 | ||
1669 | ttm_bo_unmap_virtual(bo); | |
1670 | ||
1671 | /** | |
1672 | * Swap out. Buffer will be swapped in again as soon as | |
1673 | * anyone tries to access a ttm page. | |
1674 | */ | |
1675 | ||
3f09ea4e TH |
1676 | if (bo->bdev->driver->swap_notify) |
1677 | bo->bdev->driver->swap_notify(bo); | |
1678 | ||
5df23979 | 1679 | ret = ttm_tt_swapout(bo->ttm, bo->persistent_swap_storage); |
ba4e7d97 TH |
1680 | out: |
1681 | ||
1682 | /** | |
1683 | * | |
1684 | * Unreserve without putting on LRU to avoid swapping out an | |
1685 | * already swapped buffer. | |
1686 | */ | |
1687 | ||
c7523083 | 1688 | __ttm_bo_unreserve(bo); |
ba4e7d97 TH |
1689 | kref_put(&bo->list_kref, ttm_bo_release_list); |
1690 | return ret; | |
1691 | } | |
1692 | ||
1693 | void ttm_bo_swapout_all(struct ttm_bo_device *bdev) | |
1694 | { | |
a987fcaa | 1695 | while (ttm_bo_swapout(&bdev->glob->shrink) == 0) |
ba4e7d97 TH |
1696 | ; |
1697 | } | |
e99e1e78 | 1698 | EXPORT_SYMBOL(ttm_bo_swapout_all); |
c58f009e TH |
1699 | |
1700 | /** | |
1701 | * ttm_bo_wait_unreserved - interruptible wait for a buffer object to become | |
1702 | * unreserved | |
1703 | * | |
1704 | * @bo: Pointer to buffer | |
1705 | */ | |
1706 | int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo) | |
1707 | { | |
1708 | int ret; | |
1709 | ||
1710 | /* | |
1711 | * In the absense of a wait_unlocked API, | |
1712 | * Use the bo::wu_mutex to avoid triggering livelocks due to | |
1713 | * concurrent use of this function. Note that this use of | |
1714 | * bo::wu_mutex can go away if we change locking order to | |
1715 | * mmap_sem -> bo::reserve. | |
1716 | */ | |
1717 | ret = mutex_lock_interruptible(&bo->wu_mutex); | |
1718 | if (unlikely(ret != 0)) | |
1719 | return -ERESTARTSYS; | |
1720 | if (!ww_mutex_is_locked(&bo->resv->lock)) | |
1721 | goto out_unlock; | |
c7523083 | 1722 | ret = __ttm_bo_reserve(bo, true, false, false, NULL); |
c58f009e TH |
1723 | if (unlikely(ret != 0)) |
1724 | goto out_unlock; | |
c7523083 | 1725 | __ttm_bo_unreserve(bo); |
c58f009e TH |
1726 | |
1727 | out_unlock: | |
1728 | mutex_unlock(&bo->wu_mutex); | |
1729 | return ret; | |
1730 | } |