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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 | ||
ed704a43 | 179 | if (bo->ttm && !(bo->ttm->page_flags & TTM_PAGE_FLAG_SG)) { |
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 | |
ab749618 CK |
231 | void ttm_bo_move_to_lru_tail(struct ttm_buffer_object *bo) |
232 | { | |
56fc3502 | 233 | int put_count = 0; |
ab749618 CK |
234 | |
235 | lockdep_assert_held(&bo->resv->lock.base); | |
236 | ||
56fc3502 FC |
237 | put_count = ttm_bo_del_from_lru(bo); |
238 | ttm_bo_list_ref_sub(bo, put_count, true); | |
239 | ttm_bo_add_to_lru(bo); | |
ab749618 CK |
240 | } |
241 | EXPORT_SYMBOL(ttm_bo_move_to_lru_tail); | |
242 | ||
ba4e7d97 TH |
243 | /* |
244 | * Call bo->mutex locked. | |
245 | */ | |
ba4e7d97 TH |
246 | static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc) |
247 | { | |
248 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 249 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 TH |
250 | int ret = 0; |
251 | uint32_t page_flags = 0; | |
252 | ||
253 | TTM_ASSERT_LOCKED(&bo->mutex); | |
254 | bo->ttm = NULL; | |
255 | ||
ad49f501 DA |
256 | if (bdev->need_dma32) |
257 | page_flags |= TTM_PAGE_FLAG_DMA32; | |
258 | ||
ba4e7d97 TH |
259 | switch (bo->type) { |
260 | case ttm_bo_type_device: | |
261 | if (zero_alloc) | |
262 | page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC; | |
263 | case ttm_bo_type_kernel: | |
649bf3ca JG |
264 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, |
265 | page_flags, glob->dummy_read_page); | |
ba4e7d97 TH |
266 | if (unlikely(bo->ttm == NULL)) |
267 | ret = -ENOMEM; | |
268 | break; | |
129b78bf DA |
269 | case ttm_bo_type_sg: |
270 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, | |
271 | page_flags | TTM_PAGE_FLAG_SG, | |
272 | glob->dummy_read_page); | |
273 | if (unlikely(bo->ttm == NULL)) { | |
274 | ret = -ENOMEM; | |
275 | break; | |
276 | } | |
277 | bo->ttm->sg = bo->sg; | |
278 | break; | |
ba4e7d97 | 279 | default: |
25d0479a | 280 | pr_err("Illegal buffer object type\n"); |
ba4e7d97 TH |
281 | ret = -EINVAL; |
282 | break; | |
283 | } | |
284 | ||
285 | return ret; | |
286 | } | |
287 | ||
288 | static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo, | |
289 | struct ttm_mem_reg *mem, | |
9d87fa21 | 290 | bool evict, bool interruptible, |
97a875cb | 291 | bool no_wait_gpu) |
ba4e7d97 TH |
292 | { |
293 | struct ttm_bo_device *bdev = bo->bdev; | |
294 | bool old_is_pci = ttm_mem_reg_is_pci(bdev, &bo->mem); | |
295 | bool new_is_pci = ttm_mem_reg_is_pci(bdev, mem); | |
296 | struct ttm_mem_type_manager *old_man = &bdev->man[bo->mem.mem_type]; | |
297 | struct ttm_mem_type_manager *new_man = &bdev->man[mem->mem_type]; | |
298 | int ret = 0; | |
299 | ||
300 | if (old_is_pci || new_is_pci || | |
eba67093 TH |
301 | ((mem->placement & bo->mem.placement & TTM_PL_MASK_CACHING) == 0)) { |
302 | ret = ttm_mem_io_lock(old_man, true); | |
303 | if (unlikely(ret != 0)) | |
304 | goto out_err; | |
305 | ttm_bo_unmap_virtual_locked(bo); | |
306 | ttm_mem_io_unlock(old_man); | |
307 | } | |
ba4e7d97 TH |
308 | |
309 | /* | |
310 | * Create and bind a ttm if required. | |
311 | */ | |
312 | ||
8d3bb236 BS |
313 | if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) { |
314 | if (bo->ttm == NULL) { | |
ff02b13f BS |
315 | bool zero = !(old_man->flags & TTM_MEMTYPE_FLAG_FIXED); |
316 | ret = ttm_bo_add_ttm(bo, zero); | |
8d3bb236 BS |
317 | if (ret) |
318 | goto out_err; | |
319 | } | |
ba4e7d97 TH |
320 | |
321 | ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement); | |
322 | if (ret) | |
87ef9209 | 323 | goto out_err; |
ba4e7d97 TH |
324 | |
325 | if (mem->mem_type != TTM_PL_SYSTEM) { | |
326 | ret = ttm_tt_bind(bo->ttm, mem); | |
327 | if (ret) | |
328 | goto out_err; | |
329 | } | |
330 | ||
331 | if (bo->mem.mem_type == TTM_PL_SYSTEM) { | |
82ef594e BS |
332 | if (bdev->driver->move_notify) |
333 | bdev->driver->move_notify(bo, mem); | |
ca262a99 | 334 | bo->mem = *mem; |
ba4e7d97 | 335 | mem->mm_node = NULL; |
ba4e7d97 TH |
336 | goto moved; |
337 | } | |
ba4e7d97 TH |
338 | } |
339 | ||
9f1feed2 BS |
340 | if (bdev->driver->move_notify) |
341 | bdev->driver->move_notify(bo, mem); | |
342 | ||
ba4e7d97 TH |
343 | if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
344 | !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) | |
97a875cb | 345 | ret = ttm_bo_move_ttm(bo, evict, no_wait_gpu, mem); |
ba4e7d97 TH |
346 | else if (bdev->driver->move) |
347 | ret = bdev->driver->move(bo, evict, interruptible, | |
97a875cb | 348 | no_wait_gpu, mem); |
ba4e7d97 | 349 | else |
97a875cb | 350 | ret = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, mem); |
ba4e7d97 | 351 | |
9f1feed2 BS |
352 | if (ret) { |
353 | if (bdev->driver->move_notify) { | |
354 | struct ttm_mem_reg tmp_mem = *mem; | |
355 | *mem = bo->mem; | |
356 | bo->mem = tmp_mem; | |
357 | bdev->driver->move_notify(bo, mem); | |
358 | bo->mem = *mem; | |
014b3440 | 359 | *mem = tmp_mem; |
9f1feed2 | 360 | } |
ba4e7d97 | 361 | |
9f1feed2 BS |
362 | goto out_err; |
363 | } | |
dc97b340 | 364 | |
ba4e7d97 TH |
365 | moved: |
366 | if (bo->evicted) { | |
9ef7506f RC |
367 | if (bdev->driver->invalidate_caches) { |
368 | ret = bdev->driver->invalidate_caches(bdev, bo->mem.placement); | |
369 | if (ret) | |
370 | pr_err("Can not flush read caches\n"); | |
371 | } | |
ba4e7d97 TH |
372 | bo->evicted = false; |
373 | } | |
374 | ||
375 | if (bo->mem.mm_node) { | |
d961db75 | 376 | bo->offset = (bo->mem.start << PAGE_SHIFT) + |
ba4e7d97 TH |
377 | bdev->man[bo->mem.mem_type].gpu_offset; |
378 | bo->cur_placement = bo->mem.placement; | |
354fb52c TH |
379 | } else |
380 | bo->offset = 0; | |
ba4e7d97 TH |
381 | |
382 | return 0; | |
383 | ||
384 | out_err: | |
385 | new_man = &bdev->man[bo->mem.mem_type]; | |
386 | if ((new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && bo->ttm) { | |
387 | ttm_tt_unbind(bo->ttm); | |
388 | ttm_tt_destroy(bo->ttm); | |
389 | bo->ttm = NULL; | |
390 | } | |
391 | ||
392 | return ret; | |
393 | } | |
394 | ||
1df6a2eb | 395 | /** |
40d857bb | 396 | * Call bo::reserved. |
1df6a2eb | 397 | * Will release GPU memory type usage on destruction. |
40d857bb TH |
398 | * This is the place to put in driver specific hooks to release |
399 | * driver private resources. | |
400 | * Will release the bo::reserved lock. | |
1df6a2eb TH |
401 | */ |
402 | ||
403 | static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo) | |
404 | { | |
dc97b340 JG |
405 | if (bo->bdev->driver->move_notify) |
406 | bo->bdev->driver->move_notify(bo, NULL); | |
407 | ||
1df6a2eb | 408 | if (bo->ttm) { |
1df6a2eb TH |
409 | ttm_tt_unbind(bo->ttm); |
410 | ttm_tt_destroy(bo->ttm); | |
411 | bo->ttm = NULL; | |
1df6a2eb | 412 | } |
40d857bb | 413 | ttm_bo_mem_put(bo, &bo->mem); |
1df6a2eb | 414 | |
5e338405 | 415 | ww_mutex_unlock (&bo->resv->lock); |
1df6a2eb TH |
416 | } |
417 | ||
f2c24b83 ML |
418 | static void ttm_bo_flush_all_fences(struct ttm_buffer_object *bo) |
419 | { | |
420 | struct reservation_object_list *fobj; | |
421 | struct fence *fence; | |
422 | int i; | |
423 | ||
424 | fobj = reservation_object_get_list(bo->resv); | |
425 | fence = reservation_object_get_excl(bo->resv); | |
426 | if (fence && !fence->ops->signaled) | |
427 | fence_enable_sw_signaling(fence); | |
428 | ||
429 | for (i = 0; fobj && i < fobj->shared_count; ++i) { | |
430 | fence = rcu_dereference_protected(fobj->shared[i], | |
431 | reservation_object_held(bo->resv)); | |
432 | ||
433 | if (!fence->ops->signaled) | |
434 | fence_enable_sw_signaling(fence); | |
435 | } | |
436 | } | |
437 | ||
e1efc9b6 | 438 | static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
439 | { |
440 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 441 | struct ttm_bo_global *glob = bo->glob; |
e1efc9b6 | 442 | int put_count; |
ba4e7d97 TH |
443 | int ret; |
444 | ||
4154f051 | 445 | spin_lock(&glob->lru_lock); |
0eff2a24 | 446 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
4154f051 | 447 | |
dd7cfd64 | 448 | if (!ret) { |
f2c24b83 | 449 | if (!ttm_bo_wait(bo, false, false, true)) { |
dd7cfd64 | 450 | put_count = ttm_bo_del_from_lru(bo); |
ba4e7d97 | 451 | |
dd7cfd64 ML |
452 | spin_unlock(&glob->lru_lock); |
453 | ttm_bo_cleanup_memtype_use(bo); | |
ba4e7d97 | 454 | |
dd7cfd64 | 455 | ttm_bo_list_ref_sub(bo, put_count, true); |
4154f051 | 456 | |
dd7cfd64 | 457 | return; |
f2c24b83 ML |
458 | } else |
459 | ttm_bo_flush_all_fences(bo); | |
15205fbc TH |
460 | |
461 | /* | |
462 | * Make NO_EVICT bos immediately available to | |
463 | * shrinkers, now that they are queued for | |
464 | * destruction. | |
465 | */ | |
466 | if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT) { | |
467 | bo->mem.placement &= ~TTM_PL_FLAG_NO_EVICT; | |
468 | ttm_bo_add_to_lru(bo); | |
469 | } | |
470 | ||
c7523083 | 471 | __ttm_bo_unreserve(bo); |
15205fbc | 472 | } |
e1efc9b6 TH |
473 | |
474 | kref_get(&bo->list_kref); | |
475 | list_add_tail(&bo->ddestroy, &bdev->ddestroy); | |
476 | spin_unlock(&glob->lru_lock); | |
e1efc9b6 | 477 | |
e1efc9b6 TH |
478 | schedule_delayed_work(&bdev->wq, |
479 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
480 | } | |
481 | ||
482 | /** | |
85b144f8 | 483 | * function ttm_bo_cleanup_refs_and_unlock |
e1efc9b6 TH |
484 | * If bo idle, remove from delayed- and lru lists, and unref. |
485 | * If not idle, do nothing. | |
486 | * | |
85b144f8 ML |
487 | * Must be called with lru_lock and reservation held, this function |
488 | * will drop both before returning. | |
489 | * | |
e1efc9b6 | 490 | * @interruptible Any sleeps should occur interruptibly. |
e1efc9b6 TH |
491 | * @no_wait_gpu Never wait for gpu. Return -EBUSY instead. |
492 | */ | |
493 | ||
85b144f8 ML |
494 | static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, |
495 | bool interruptible, | |
496 | bool no_wait_gpu) | |
e1efc9b6 TH |
497 | { |
498 | struct ttm_bo_global *glob = bo->glob; | |
499 | int put_count; | |
85b144f8 | 500 | int ret; |
e1efc9b6 | 501 | |
85b144f8 | 502 | ret = ttm_bo_wait(bo, false, false, true); |
e1efc9b6 | 503 | |
85b144f8 | 504 | if (ret && !no_wait_gpu) { |
472db7ab ML |
505 | long lret; |
506 | ww_mutex_unlock(&bo->resv->lock); | |
507 | spin_unlock(&glob->lru_lock); | |
508 | ||
509 | lret = reservation_object_wait_timeout_rcu(bo->resv, | |
510 | true, | |
511 | interruptible, | |
512 | 30 * HZ); | |
513 | ||
514 | if (lret < 0) | |
515 | return lret; | |
516 | else if (lret == 0) | |
517 | return -EBUSY; | |
b8e902f2 | 518 | |
85b144f8 | 519 | spin_lock(&glob->lru_lock); |
0eff2a24 | 520 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
b8e902f2 | 521 | |
85b144f8 ML |
522 | /* |
523 | * We raced, and lost, someone else holds the reservation now, | |
524 | * and is probably busy in ttm_bo_cleanup_memtype_use. | |
525 | * | |
526 | * Even if it's not the case, because we finished waiting any | |
527 | * delayed destruction would succeed, so just return success | |
528 | * here. | |
529 | */ | |
530 | if (ret) { | |
531 | spin_unlock(&glob->lru_lock); | |
532 | return 0; | |
533 | } | |
7040138f ML |
534 | |
535 | /* | |
536 | * remove sync_obj with ttm_bo_wait, the wait should be | |
537 | * finished, and no new wait object should have been added. | |
538 | */ | |
7040138f ML |
539 | ret = ttm_bo_wait(bo, false, false, true); |
540 | WARN_ON(ret); | |
541 | } | |
ba4e7d97 | 542 | |
85b144f8 | 543 | if (ret || unlikely(list_empty(&bo->ddestroy))) { |
c7523083 | 544 | __ttm_bo_unreserve(bo); |
a987fcaa | 545 | spin_unlock(&glob->lru_lock); |
85b144f8 | 546 | return ret; |
ba4e7d97 TH |
547 | } |
548 | ||
e1efc9b6 TH |
549 | put_count = ttm_bo_del_from_lru(bo); |
550 | list_del_init(&bo->ddestroy); | |
551 | ++put_count; | |
552 | ||
553 | spin_unlock(&glob->lru_lock); | |
554 | ttm_bo_cleanup_memtype_use(bo); | |
555 | ||
d6ea8886 | 556 | ttm_bo_list_ref_sub(bo, put_count, true); |
e1efc9b6 TH |
557 | |
558 | return 0; | |
ba4e7d97 TH |
559 | } |
560 | ||
561 | /** | |
562 | * Traverse the delayed list, and call ttm_bo_cleanup_refs on all | |
563 | * encountered buffers. | |
564 | */ | |
565 | ||
566 | static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) | |
567 | { | |
a987fcaa | 568 | struct ttm_bo_global *glob = bdev->glob; |
1a961ce0 LB |
569 | struct ttm_buffer_object *entry = NULL; |
570 | int ret = 0; | |
ba4e7d97 | 571 | |
a987fcaa | 572 | spin_lock(&glob->lru_lock); |
1a961ce0 LB |
573 | if (list_empty(&bdev->ddestroy)) |
574 | goto out_unlock; | |
575 | ||
576 | entry = list_first_entry(&bdev->ddestroy, | |
577 | struct ttm_buffer_object, ddestroy); | |
578 | kref_get(&entry->list_kref); | |
579 | ||
580 | for (;;) { | |
581 | struct ttm_buffer_object *nentry = NULL; | |
582 | ||
583 | if (entry->ddestroy.next != &bdev->ddestroy) { | |
584 | nentry = list_first_entry(&entry->ddestroy, | |
585 | struct ttm_buffer_object, ddestroy); | |
ba4e7d97 TH |
586 | kref_get(&nentry->list_kref); |
587 | } | |
ba4e7d97 | 588 | |
0eff2a24 | 589 | ret = __ttm_bo_reserve(entry, false, true, false, NULL); |
63d0a419 ML |
590 | if (remove_all && ret) { |
591 | spin_unlock(&glob->lru_lock); | |
c7523083 | 592 | ret = __ttm_bo_reserve(entry, false, false, |
0eff2a24 | 593 | false, NULL); |
63d0a419 ML |
594 | spin_lock(&glob->lru_lock); |
595 | } | |
596 | ||
85b144f8 ML |
597 | if (!ret) |
598 | ret = ttm_bo_cleanup_refs_and_unlock(entry, false, | |
599 | !remove_all); | |
600 | else | |
601 | spin_unlock(&glob->lru_lock); | |
602 | ||
ba4e7d97 | 603 | kref_put(&entry->list_kref, ttm_bo_release_list); |
1a961ce0 LB |
604 | entry = nentry; |
605 | ||
606 | if (ret || !entry) | |
607 | goto out; | |
ba4e7d97 | 608 | |
a987fcaa | 609 | spin_lock(&glob->lru_lock); |
1a961ce0 | 610 | if (list_empty(&entry->ddestroy)) |
ba4e7d97 TH |
611 | break; |
612 | } | |
ba4e7d97 | 613 | |
1a961ce0 LB |
614 | out_unlock: |
615 | spin_unlock(&glob->lru_lock); | |
616 | out: | |
617 | if (entry) | |
618 | kref_put(&entry->list_kref, ttm_bo_release_list); | |
ba4e7d97 TH |
619 | return ret; |
620 | } | |
621 | ||
622 | static void ttm_bo_delayed_workqueue(struct work_struct *work) | |
623 | { | |
624 | struct ttm_bo_device *bdev = | |
625 | container_of(work, struct ttm_bo_device, wq.work); | |
626 | ||
627 | if (ttm_bo_delayed_delete(bdev, false)) { | |
628 | schedule_delayed_work(&bdev->wq, | |
629 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
630 | } | |
631 | } | |
632 | ||
633 | static void ttm_bo_release(struct kref *kref) | |
634 | { | |
635 | struct ttm_buffer_object *bo = | |
636 | container_of(kref, struct ttm_buffer_object, kref); | |
637 | struct ttm_bo_device *bdev = bo->bdev; | |
eba67093 | 638 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; |
ba4e7d97 | 639 | |
72525b3f | 640 | drm_vma_offset_remove(&bdev->vma_manager, &bo->vma_node); |
eba67093 TH |
641 | ttm_mem_io_lock(man, false); |
642 | ttm_mem_io_free_vm(bo); | |
643 | ttm_mem_io_unlock(man); | |
e1efc9b6 | 644 | ttm_bo_cleanup_refs_or_queue(bo); |
ba4e7d97 | 645 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
646 | } |
647 | ||
648 | void ttm_bo_unref(struct ttm_buffer_object **p_bo) | |
649 | { | |
650 | struct ttm_buffer_object *bo = *p_bo; | |
ba4e7d97 TH |
651 | |
652 | *p_bo = NULL; | |
ba4e7d97 | 653 | kref_put(&bo->kref, ttm_bo_release); |
ba4e7d97 TH |
654 | } |
655 | EXPORT_SYMBOL(ttm_bo_unref); | |
656 | ||
7c5ee536 MG |
657 | int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev) |
658 | { | |
659 | return cancel_delayed_work_sync(&bdev->wq); | |
660 | } | |
661 | EXPORT_SYMBOL(ttm_bo_lock_delayed_workqueue); | |
662 | ||
663 | void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched) | |
664 | { | |
665 | if (resched) | |
666 | schedule_delayed_work(&bdev->wq, | |
667 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
668 | } | |
669 | EXPORT_SYMBOL(ttm_bo_unlock_delayed_workqueue); | |
670 | ||
ca262a99 | 671 | static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible, |
97a875cb | 672 | bool no_wait_gpu) |
ba4e7d97 | 673 | { |
ba4e7d97 TH |
674 | struct ttm_bo_device *bdev = bo->bdev; |
675 | struct ttm_mem_reg evict_mem; | |
ca262a99 JG |
676 | struct ttm_placement placement; |
677 | int ret = 0; | |
ba4e7d97 | 678 | |
1717c0e2 | 679 | ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); |
ba4e7d97 | 680 | |
78ecf091 | 681 | if (unlikely(ret != 0)) { |
98ffc415 | 682 | if (ret != -ERESTARTSYS) { |
25d0479a | 683 | pr_err("Failed to expire sync object before buffer eviction\n"); |
78ecf091 | 684 | } |
ba4e7d97 TH |
685 | goto out; |
686 | } | |
687 | ||
009a9dad | 688 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
689 | |
690 | evict_mem = bo->mem; | |
691 | evict_mem.mm_node = NULL; | |
eba67093 TH |
692 | evict_mem.bus.io_reserved_vm = false; |
693 | evict_mem.bus.io_reserved_count = 0; | |
ba4e7d97 | 694 | |
7cb7d1d7 JG |
695 | placement.num_placement = 0; |
696 | placement.num_busy_placement = 0; | |
ca262a99 JG |
697 | bdev->driver->evict_flags(bo, &placement); |
698 | ret = ttm_bo_mem_space(bo, &placement, &evict_mem, interruptible, | |
97a875cb | 699 | no_wait_gpu); |
ba4e7d97 | 700 | if (ret) { |
fb53f862 | 701 | if (ret != -ERESTARTSYS) { |
25d0479a JP |
702 | pr_err("Failed to find memory space for buffer 0x%p eviction\n", |
703 | bo); | |
fb53f862 JG |
704 | ttm_bo_mem_space_debug(bo, &placement); |
705 | } | |
ba4e7d97 TH |
706 | goto out; |
707 | } | |
708 | ||
709 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, interruptible, | |
97a875cb | 710 | no_wait_gpu); |
ba4e7d97 | 711 | if (ret) { |
98ffc415 | 712 | if (ret != -ERESTARTSYS) |
25d0479a | 713 | pr_err("Buffer eviction failed\n"); |
42311ff9 | 714 | ttm_bo_mem_put(bo, &evict_mem); |
ba4e7d97 TH |
715 | goto out; |
716 | } | |
ca262a99 JG |
717 | bo->evicted = true; |
718 | out: | |
719 | return ret; | |
720 | } | |
721 | ||
722 | static int ttm_mem_evict_first(struct ttm_bo_device *bdev, | |
723 | uint32_t mem_type, | |
e300180f | 724 | const struct ttm_place *place, |
97a875cb | 725 | bool interruptible, |
9d87fa21 | 726 | bool no_wait_gpu) |
ca262a99 JG |
727 | { |
728 | struct ttm_bo_global *glob = bdev->glob; | |
729 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
730 | struct ttm_buffer_object *bo; | |
e7ab2019 | 731 | int ret = -EBUSY, put_count; |
ba4e7d97 | 732 | |
a987fcaa | 733 | spin_lock(&glob->lru_lock); |
e7ab2019 | 734 | list_for_each_entry(bo, &man->lru, lru) { |
0eff2a24 | 735 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
e300180f MD |
736 | if (!ret) { |
737 | if (place && (place->fpfn || place->lpfn)) { | |
738 | /* Don't evict this BO if it's outside of the | |
739 | * requested placement range | |
740 | */ | |
741 | if (place->fpfn >= (bo->mem.start + bo->mem.size) || | |
742 | (place->lpfn && place->lpfn <= bo->mem.start)) { | |
743 | __ttm_bo_unreserve(bo); | |
744 | ret = -EBUSY; | |
745 | continue; | |
746 | } | |
747 | } | |
748 | ||
e7ab2019 | 749 | break; |
e300180f | 750 | } |
e7ab2019 ML |
751 | } |
752 | ||
753 | if (ret) { | |
9c51ba1d | 754 | spin_unlock(&glob->lru_lock); |
e7ab2019 | 755 | return ret; |
9c51ba1d TH |
756 | } |
757 | ||
ca262a99 | 758 | kref_get(&bo->list_kref); |
9c51ba1d | 759 | |
e1efc9b6 | 760 | if (!list_empty(&bo->ddestroy)) { |
e7ab2019 ML |
761 | ret = ttm_bo_cleanup_refs_and_unlock(bo, interruptible, |
762 | no_wait_gpu); | |
e1efc9b6 | 763 | kref_put(&bo->list_kref, ttm_bo_release_list); |
b8e902f2 | 764 | return ret; |
e1efc9b6 TH |
765 | } |
766 | ||
9c51ba1d | 767 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 768 | spin_unlock(&glob->lru_lock); |
9c51ba1d TH |
769 | |
770 | BUG_ON(ret != 0); | |
771 | ||
d6ea8886 | 772 | ttm_bo_list_ref_sub(bo, put_count, true); |
9c51ba1d | 773 | |
97a875cb | 774 | ret = ttm_bo_evict(bo, interruptible, no_wait_gpu); |
ca262a99 | 775 | ttm_bo_unreserve(bo); |
9c51ba1d | 776 | |
ca262a99 | 777 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
778 | return ret; |
779 | } | |
780 | ||
42311ff9 BS |
781 | void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem) |
782 | { | |
d961db75 | 783 | struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type]; |
42311ff9 | 784 | |
d961db75 BS |
785 | if (mem->mm_node) |
786 | (*man->func->put_node)(man, mem); | |
42311ff9 BS |
787 | } |
788 | EXPORT_SYMBOL(ttm_bo_mem_put); | |
789 | ||
ba4e7d97 TH |
790 | /** |
791 | * Repeatedly evict memory from the LRU for @mem_type until we create enough | |
792 | * space, or we've evicted everything and there isn't enough space. | |
793 | */ | |
ca262a99 JG |
794 | static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, |
795 | uint32_t mem_type, | |
f1217ed0 | 796 | const struct ttm_place *place, |
ca262a99 | 797 | struct ttm_mem_reg *mem, |
9d87fa21 | 798 | bool interruptible, |
9d87fa21 | 799 | bool no_wait_gpu) |
ba4e7d97 | 800 | { |
ca262a99 | 801 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 | 802 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
ba4e7d97 TH |
803 | int ret; |
804 | ||
ba4e7d97 | 805 | do { |
f1217ed0 | 806 | ret = (*man->func->get_node)(man, bo, place, mem); |
ca262a99 JG |
807 | if (unlikely(ret != 0)) |
808 | return ret; | |
d961db75 | 809 | if (mem->mm_node) |
ba4e7d97 | 810 | break; |
e300180f | 811 | ret = ttm_mem_evict_first(bdev, mem_type, place, |
97a875cb | 812 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
813 | if (unlikely(ret != 0)) |
814 | return ret; | |
ba4e7d97 | 815 | } while (1); |
d961db75 | 816 | if (mem->mm_node == NULL) |
ba4e7d97 | 817 | return -ENOMEM; |
ba4e7d97 TH |
818 | mem->mem_type = mem_type; |
819 | return 0; | |
820 | } | |
821 | ||
ae3e8122 TH |
822 | static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man, |
823 | uint32_t cur_placement, | |
824 | uint32_t proposed_placement) | |
825 | { | |
826 | uint32_t caching = proposed_placement & TTM_PL_MASK_CACHING; | |
827 | uint32_t result = proposed_placement & ~TTM_PL_MASK_CACHING; | |
828 | ||
829 | /** | |
830 | * Keep current caching if possible. | |
831 | */ | |
832 | ||
833 | if ((cur_placement & caching) != 0) | |
834 | result |= (cur_placement & caching); | |
835 | else if ((man->default_caching & caching) != 0) | |
836 | result |= man->default_caching; | |
837 | else if ((TTM_PL_FLAG_CACHED & caching) != 0) | |
838 | result |= TTM_PL_FLAG_CACHED; | |
839 | else if ((TTM_PL_FLAG_WC & caching) != 0) | |
840 | result |= TTM_PL_FLAG_WC; | |
841 | else if ((TTM_PL_FLAG_UNCACHED & caching) != 0) | |
842 | result |= TTM_PL_FLAG_UNCACHED; | |
843 | ||
844 | return result; | |
845 | } | |
846 | ||
ba4e7d97 | 847 | static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man, |
ba4e7d97 | 848 | uint32_t mem_type, |
f1217ed0 | 849 | const struct ttm_place *place, |
ae3e8122 | 850 | uint32_t *masked_placement) |
ba4e7d97 TH |
851 | { |
852 | uint32_t cur_flags = ttm_bo_type_flags(mem_type); | |
853 | ||
f1217ed0 | 854 | if ((cur_flags & place->flags & TTM_PL_MASK_MEM) == 0) |
ba4e7d97 TH |
855 | return false; |
856 | ||
f1217ed0 | 857 | if ((place->flags & man->available_caching) == 0) |
ba4e7d97 | 858 | return false; |
ba4e7d97 | 859 | |
f1217ed0 | 860 | cur_flags |= (place->flags & man->available_caching); |
ae3e8122 TH |
861 | |
862 | *masked_placement = cur_flags; | |
ba4e7d97 TH |
863 | return true; |
864 | } | |
865 | ||
866 | /** | |
867 | * Creates space for memory region @mem according to its type. | |
868 | * | |
869 | * This function first searches for free space in compatible memory types in | |
870 | * the priority order defined by the driver. If free space isn't found, then | |
871 | * ttm_bo_mem_force_space is attempted in priority order to evict and find | |
872 | * space. | |
873 | */ | |
874 | int ttm_bo_mem_space(struct ttm_buffer_object *bo, | |
ca262a99 JG |
875 | struct ttm_placement *placement, |
876 | struct ttm_mem_reg *mem, | |
97a875cb | 877 | bool interruptible, |
9d87fa21 | 878 | bool no_wait_gpu) |
ba4e7d97 TH |
879 | { |
880 | struct ttm_bo_device *bdev = bo->bdev; | |
881 | struct ttm_mem_type_manager *man; | |
ba4e7d97 TH |
882 | uint32_t mem_type = TTM_PL_SYSTEM; |
883 | uint32_t cur_flags = 0; | |
884 | bool type_found = false; | |
885 | bool type_ok = false; | |
98ffc415 | 886 | bool has_erestartsys = false; |
ca262a99 | 887 | int i, ret; |
ba4e7d97 TH |
888 | |
889 | mem->mm_node = NULL; | |
b6637526 | 890 | for (i = 0; i < placement->num_placement; ++i) { |
f1217ed0 CK |
891 | const struct ttm_place *place = &placement->placement[i]; |
892 | ||
893 | ret = ttm_mem_type_from_place(place, &mem_type); | |
ca262a99 JG |
894 | if (ret) |
895 | return ret; | |
ba4e7d97 | 896 | man = &bdev->man[mem_type]; |
e30f3963 TH |
897 | if (!man->has_type || !man->use_type) |
898 | continue; | |
ba4e7d97 | 899 | |
f1217ed0 | 900 | type_ok = ttm_bo_mt_compatible(man, mem_type, place, |
ca262a99 | 901 | &cur_flags); |
ba4e7d97 TH |
902 | |
903 | if (!type_ok) | |
904 | continue; | |
905 | ||
e30f3963 | 906 | type_found = true; |
ae3e8122 TH |
907 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
908 | cur_flags); | |
ca262a99 JG |
909 | /* |
910 | * Use the access and other non-mapping-related flag bits from | |
911 | * the memory placement flags to the current flags | |
912 | */ | |
f1217ed0 | 913 | ttm_flag_masked(&cur_flags, place->flags, |
ca262a99 | 914 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 915 | |
ba4e7d97 TH |
916 | if (mem_type == TTM_PL_SYSTEM) |
917 | break; | |
918 | ||
e30f3963 TH |
919 | ret = (*man->func->get_node)(man, bo, place, mem); |
920 | if (unlikely(ret)) | |
921 | return ret; | |
922 | ||
d961db75 | 923 | if (mem->mm_node) |
ba4e7d97 TH |
924 | break; |
925 | } | |
926 | ||
d961db75 | 927 | if ((type_ok && (mem_type == TTM_PL_SYSTEM)) || mem->mm_node) { |
ba4e7d97 TH |
928 | mem->mem_type = mem_type; |
929 | mem->placement = cur_flags; | |
930 | return 0; | |
931 | } | |
932 | ||
b6637526 | 933 | for (i = 0; i < placement->num_busy_placement; ++i) { |
f1217ed0 CK |
934 | const struct ttm_place *place = &placement->busy_placement[i]; |
935 | ||
936 | ret = ttm_mem_type_from_place(place, &mem_type); | |
ca262a99 JG |
937 | if (ret) |
938 | return ret; | |
ba4e7d97 | 939 | man = &bdev->man[mem_type]; |
e30f3963 | 940 | if (!man->has_type || !man->use_type) |
ba4e7d97 | 941 | continue; |
f1217ed0 | 942 | if (!ttm_bo_mt_compatible(man, mem_type, place, &cur_flags)) |
ba4e7d97 TH |
943 | continue; |
944 | ||
e30f3963 | 945 | type_found = true; |
ae3e8122 TH |
946 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
947 | cur_flags); | |
ca262a99 JG |
948 | /* |
949 | * Use the access and other non-mapping-related flag bits from | |
950 | * the memory placement flags to the current flags | |
951 | */ | |
f1217ed0 | 952 | ttm_flag_masked(&cur_flags, place->flags, |
ca262a99 | 953 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 954 | |
0eaddb28 TH |
955 | if (mem_type == TTM_PL_SYSTEM) { |
956 | mem->mem_type = mem_type; | |
957 | mem->placement = cur_flags; | |
958 | mem->mm_node = NULL; | |
959 | return 0; | |
960 | } | |
961 | ||
f1217ed0 | 962 | ret = ttm_bo_mem_force_space(bo, mem_type, place, mem, |
97a875cb | 963 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
964 | if (ret == 0 && mem->mm_node) { |
965 | mem->placement = cur_flags; | |
966 | return 0; | |
967 | } | |
98ffc415 TH |
968 | if (ret == -ERESTARTSYS) |
969 | has_erestartsys = true; | |
ba4e7d97 | 970 | } |
e30f3963 TH |
971 | |
972 | if (!type_found) { | |
973 | printk(KERN_ERR TTM_PFX "No compatible memory type found.\n"); | |
974 | return -EINVAL; | |
975 | } | |
976 | ||
977 | return (has_erestartsys) ? -ERESTARTSYS : -ENOMEM; | |
ba4e7d97 TH |
978 | } |
979 | EXPORT_SYMBOL(ttm_bo_mem_space); | |
980 | ||
6e87fa48 | 981 | static int ttm_bo_move_buffer(struct ttm_buffer_object *bo, |
ca262a99 | 982 | struct ttm_placement *placement, |
97a875cb | 983 | bool interruptible, |
9d87fa21 | 984 | bool no_wait_gpu) |
ba4e7d97 | 985 | { |
ba4e7d97 TH |
986 | int ret = 0; |
987 | struct ttm_mem_reg mem; | |
988 | ||
009a9dad | 989 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
990 | |
991 | /* | |
992 | * FIXME: It's possible to pipeline buffer moves. | |
993 | * Have the driver move function wait for idle when necessary, | |
994 | * instead of doing it here. | |
995 | */ | |
1717c0e2 | 996 | ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); |
ba4e7d97 TH |
997 | if (ret) |
998 | return ret; | |
ba4e7d97 TH |
999 | mem.num_pages = bo->num_pages; |
1000 | mem.size = mem.num_pages << PAGE_SHIFT; | |
1001 | mem.page_alignment = bo->mem.page_alignment; | |
eba67093 TH |
1002 | mem.bus.io_reserved_vm = false; |
1003 | mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
1004 | /* |
1005 | * Determine where to move the buffer. | |
1006 | */ | |
97a875cb ML |
1007 | ret = ttm_bo_mem_space(bo, placement, &mem, |
1008 | interruptible, no_wait_gpu); | |
ba4e7d97 TH |
1009 | if (ret) |
1010 | goto out_unlock; | |
97a875cb ML |
1011 | ret = ttm_bo_handle_move_mem(bo, &mem, false, |
1012 | interruptible, no_wait_gpu); | |
ba4e7d97 | 1013 | out_unlock: |
d961db75 BS |
1014 | if (ret && mem.mm_node) |
1015 | ttm_bo_mem_put(bo, &mem); | |
ba4e7d97 TH |
1016 | return ret; |
1017 | } | |
1018 | ||
59c8e663 TH |
1019 | static bool ttm_bo_mem_compat(struct ttm_placement *placement, |
1020 | struct ttm_mem_reg *mem, | |
1021 | uint32_t *new_flags) | |
ba4e7d97 | 1022 | { |
ca262a99 | 1023 | int i; |
e22238ea | 1024 | |
ca262a99 | 1025 | for (i = 0; i < placement->num_placement; i++) { |
f1217ed0 | 1026 | const struct ttm_place *heap = &placement->placement[i]; |
9ace2ef7 | 1027 | if (mem->mm_node && |
f1217ed0 | 1028 | (mem->start < heap->fpfn || |
9ace2ef7 | 1029 | (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) |
f1217ed0 CK |
1030 | continue; |
1031 | ||
1032 | *new_flags = heap->flags; | |
59c8e663 TH |
1033 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && |
1034 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1035 | return true; | |
1036 | } | |
1037 | ||
1038 | for (i = 0; i < placement->num_busy_placement; i++) { | |
f1217ed0 | 1039 | const struct ttm_place *heap = &placement->busy_placement[i]; |
9ace2ef7 | 1040 | if (mem->mm_node && |
f1217ed0 | 1041 | (mem->start < heap->fpfn || |
9ace2ef7 | 1042 | (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) |
f1217ed0 CK |
1043 | continue; |
1044 | ||
1045 | *new_flags = heap->flags; | |
59c8e663 TH |
1046 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && |
1047 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1048 | return true; | |
ca262a99 | 1049 | } |
59c8e663 TH |
1050 | |
1051 | return false; | |
ba4e7d97 TH |
1052 | } |
1053 | ||
09855acb JG |
1054 | int ttm_bo_validate(struct ttm_buffer_object *bo, |
1055 | struct ttm_placement *placement, | |
97a875cb | 1056 | bool interruptible, |
9d87fa21 | 1057 | bool no_wait_gpu) |
ba4e7d97 TH |
1058 | { |
1059 | int ret; | |
59c8e663 | 1060 | uint32_t new_flags; |
ba4e7d97 | 1061 | |
009a9dad | 1062 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
1063 | /* |
1064 | * Check whether we need to move buffer. | |
1065 | */ | |
59c8e663 | 1066 | if (!ttm_bo_mem_compat(placement, &bo->mem, &new_flags)) { |
97a875cb ML |
1067 | ret = ttm_bo_move_buffer(bo, placement, interruptible, |
1068 | no_wait_gpu); | |
ca262a99 | 1069 | if (ret) |
ba4e7d97 | 1070 | return ret; |
ca262a99 JG |
1071 | } else { |
1072 | /* | |
1073 | * Use the access and other non-mapping-related flag bits from | |
1074 | * the compatible memory placement flags to the active flags | |
1075 | */ | |
59c8e663 | 1076 | ttm_flag_masked(&bo->mem.placement, new_flags, |
ca262a99 | 1077 | ~TTM_PL_MASK_MEMTYPE); |
ba4e7d97 | 1078 | } |
ba4e7d97 TH |
1079 | /* |
1080 | * We might need to add a TTM. | |
1081 | */ | |
ba4e7d97 TH |
1082 | if (bo->mem.mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { |
1083 | ret = ttm_bo_add_ttm(bo, true); | |
1084 | if (ret) | |
1085 | return ret; | |
1086 | } | |
ba4e7d97 TH |
1087 | return 0; |
1088 | } | |
09855acb | 1089 | EXPORT_SYMBOL(ttm_bo_validate); |
ba4e7d97 | 1090 | |
09855acb JG |
1091 | int ttm_bo_init(struct ttm_bo_device *bdev, |
1092 | struct ttm_buffer_object *bo, | |
1093 | unsigned long size, | |
1094 | enum ttm_bo_type type, | |
1095 | struct ttm_placement *placement, | |
1096 | uint32_t page_alignment, | |
09855acb | 1097 | bool interruptible, |
5df23979 | 1098 | struct file *persistent_swap_storage, |
09855acb | 1099 | size_t acc_size, |
129b78bf | 1100 | struct sg_table *sg, |
f4f4e3e3 | 1101 | struct reservation_object *resv, |
09855acb | 1102 | void (*destroy) (struct ttm_buffer_object *)) |
ba4e7d97 | 1103 | { |
09855acb | 1104 | int ret = 0; |
ba4e7d97 | 1105 | unsigned long num_pages; |
57de4ba9 | 1106 | struct ttm_mem_global *mem_glob = bdev->glob->mem_glob; |
5e338405 | 1107 | bool locked; |
57de4ba9 JG |
1108 | |
1109 | ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false); | |
1110 | if (ret) { | |
25d0479a | 1111 | pr_err("Out of kernel memory\n"); |
57de4ba9 JG |
1112 | if (destroy) |
1113 | (*destroy)(bo); | |
1114 | else | |
1115 | kfree(bo); | |
1116 | return -ENOMEM; | |
1117 | } | |
ba4e7d97 | 1118 | |
ba4e7d97 TH |
1119 | num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; |
1120 | if (num_pages == 0) { | |
25d0479a | 1121 | pr_err("Illegal buffer object size\n"); |
7dfbbdcf TH |
1122 | if (destroy) |
1123 | (*destroy)(bo); | |
1124 | else | |
1125 | kfree(bo); | |
a393c730 | 1126 | ttm_mem_global_free(mem_glob, acc_size); |
ba4e7d97 TH |
1127 | return -EINVAL; |
1128 | } | |
1129 | bo->destroy = destroy; | |
1130 | ||
ba4e7d97 TH |
1131 | kref_init(&bo->kref); |
1132 | kref_init(&bo->list_kref); | |
1133 | atomic_set(&bo->cpu_writers, 0); | |
ba4e7d97 TH |
1134 | INIT_LIST_HEAD(&bo->lru); |
1135 | INIT_LIST_HEAD(&bo->ddestroy); | |
1136 | INIT_LIST_HEAD(&bo->swap); | |
eba67093 | 1137 | INIT_LIST_HEAD(&bo->io_reserve_lru); |
c58f009e | 1138 | mutex_init(&bo->wu_mutex); |
ba4e7d97 | 1139 | bo->bdev = bdev; |
a987fcaa | 1140 | bo->glob = bdev->glob; |
ba4e7d97 TH |
1141 | bo->type = type; |
1142 | bo->num_pages = num_pages; | |
eb6d2c39 | 1143 | bo->mem.size = num_pages << PAGE_SHIFT; |
ba4e7d97 TH |
1144 | bo->mem.mem_type = TTM_PL_SYSTEM; |
1145 | bo->mem.num_pages = bo->num_pages; | |
1146 | bo->mem.mm_node = NULL; | |
1147 | bo->mem.page_alignment = page_alignment; | |
eba67093 TH |
1148 | bo->mem.bus.io_reserved_vm = false; |
1149 | bo->mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
1150 | bo->priv_flags = 0; |
1151 | bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED); | |
5df23979 | 1152 | bo->persistent_swap_storage = persistent_swap_storage; |
ba4e7d97 | 1153 | bo->acc_size = acc_size; |
129b78bf | 1154 | bo->sg = sg; |
f4f4e3e3 ML |
1155 | if (resv) { |
1156 | bo->resv = resv; | |
1157 | lockdep_assert_held(&bo->resv->lock.base); | |
1158 | } else { | |
1159 | bo->resv = &bo->ttm_resv; | |
1160 | reservation_object_init(&bo->ttm_resv); | |
1161 | } | |
a987fcaa | 1162 | atomic_inc(&bo->glob->bo_count); |
72525b3f | 1163 | drm_vma_node_reset(&bo->vma_node); |
ba4e7d97 | 1164 | |
ba4e7d97 TH |
1165 | /* |
1166 | * For ttm_bo_type_device buffers, allocate | |
1167 | * address space from the device. | |
1168 | */ | |
f1217ed0 CK |
1169 | if (bo->type == ttm_bo_type_device || |
1170 | bo->type == ttm_bo_type_sg) | |
abf19035 DH |
1171 | ret = drm_vma_offset_add(&bdev->vma_manager, &bo->vma_node, |
1172 | bo->mem.num_pages); | |
ba4e7d97 | 1173 | |
f4f4e3e3 ML |
1174 | /* passed reservation objects should already be locked, |
1175 | * since otherwise lockdep will be angered in radeon. | |
1176 | */ | |
1177 | if (!resv) { | |
1178 | locked = ww_mutex_trylock(&bo->resv->lock); | |
1179 | WARN_ON(!locked); | |
1180 | } | |
ba4e7d97 | 1181 | |
5e338405 ML |
1182 | if (likely(!ret)) |
1183 | ret = ttm_bo_validate(bo, placement, interruptible, false); | |
ba4e7d97 | 1184 | |
33d48cf8 | 1185 | if (!resv) { |
f4f4e3e3 | 1186 | ttm_bo_unreserve(bo); |
5e338405 | 1187 | |
33d48cf8 CK |
1188 | } else if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { |
1189 | spin_lock(&bo->glob->lru_lock); | |
1190 | ttm_bo_add_to_lru(bo); | |
1191 | spin_unlock(&bo->glob->lru_lock); | |
1192 | } | |
1193 | ||
5e338405 ML |
1194 | if (unlikely(ret)) |
1195 | ttm_bo_unref(&bo); | |
ba4e7d97 TH |
1196 | |
1197 | return ret; | |
1198 | } | |
09855acb | 1199 | EXPORT_SYMBOL(ttm_bo_init); |
ba4e7d97 | 1200 | |
57de4ba9 JG |
1201 | size_t ttm_bo_acc_size(struct ttm_bo_device *bdev, |
1202 | unsigned long bo_size, | |
1203 | unsigned struct_size) | |
ba4e7d97 | 1204 | { |
57de4ba9 JG |
1205 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; |
1206 | size_t size = 0; | |
ba4e7d97 | 1207 | |
57de4ba9 JG |
1208 | size += ttm_round_pot(struct_size); |
1209 | size += PAGE_ALIGN(npages * sizeof(void *)); | |
1210 | size += ttm_round_pot(sizeof(struct ttm_tt)); | |
1211 | return size; | |
ba4e7d97 | 1212 | } |
57de4ba9 JG |
1213 | EXPORT_SYMBOL(ttm_bo_acc_size); |
1214 | ||
1215 | size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev, | |
1216 | unsigned long bo_size, | |
1217 | unsigned struct_size) | |
1218 | { | |
1219 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; | |
1220 | size_t size = 0; | |
1221 | ||
1222 | size += ttm_round_pot(struct_size); | |
1223 | size += PAGE_ALIGN(npages * sizeof(void *)); | |
1224 | size += PAGE_ALIGN(npages * sizeof(dma_addr_t)); | |
1225 | size += ttm_round_pot(sizeof(struct ttm_dma_tt)); | |
1226 | return size; | |
1227 | } | |
1228 | EXPORT_SYMBOL(ttm_bo_dma_acc_size); | |
ba4e7d97 | 1229 | |
09855acb JG |
1230 | int ttm_bo_create(struct ttm_bo_device *bdev, |
1231 | unsigned long size, | |
1232 | enum ttm_bo_type type, | |
1233 | struct ttm_placement *placement, | |
1234 | uint32_t page_alignment, | |
09855acb | 1235 | bool interruptible, |
5df23979 | 1236 | struct file *persistent_swap_storage, |
09855acb | 1237 | struct ttm_buffer_object **p_bo) |
ba4e7d97 TH |
1238 | { |
1239 | struct ttm_buffer_object *bo; | |
57de4ba9 | 1240 | size_t acc_size; |
ca262a99 | 1241 | int ret; |
ba4e7d97 | 1242 | |
ba4e7d97 | 1243 | bo = kzalloc(sizeof(*bo), GFP_KERNEL); |
a393c730 | 1244 | if (unlikely(bo == NULL)) |
ba4e7d97 | 1245 | return -ENOMEM; |
ba4e7d97 | 1246 | |
a393c730 | 1247 | acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct ttm_buffer_object)); |
09855acb | 1248 | ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment, |
0b91c4a1 | 1249 | interruptible, persistent_swap_storage, acc_size, |
f4f4e3e3 | 1250 | NULL, NULL, NULL); |
ba4e7d97 TH |
1251 | if (likely(ret == 0)) |
1252 | *p_bo = bo; | |
1253 | ||
1254 | return ret; | |
1255 | } | |
4d798937 | 1256 | EXPORT_SYMBOL(ttm_bo_create); |
ba4e7d97 | 1257 | |
ba4e7d97 | 1258 | static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, |
ca262a99 | 1259 | unsigned mem_type, bool allow_errors) |
ba4e7d97 | 1260 | { |
ca262a99 | 1261 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
a987fcaa | 1262 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 | 1263 | int ret; |
ba4e7d97 TH |
1264 | |
1265 | /* | |
1266 | * Can't use standard list traversal since we're unlocking. | |
1267 | */ | |
1268 | ||
a987fcaa | 1269 | spin_lock(&glob->lru_lock); |
ca262a99 | 1270 | while (!list_empty(&man->lru)) { |
a987fcaa | 1271 | spin_unlock(&glob->lru_lock); |
e300180f | 1272 | ret = ttm_mem_evict_first(bdev, mem_type, NULL, false, false); |
ca262a99 JG |
1273 | if (ret) { |
1274 | if (allow_errors) { | |
1275 | return ret; | |
1276 | } else { | |
25d0479a | 1277 | pr_err("Cleanup eviction failed\n"); |
ca262a99 JG |
1278 | } |
1279 | } | |
a987fcaa | 1280 | spin_lock(&glob->lru_lock); |
ba4e7d97 | 1281 | } |
a987fcaa | 1282 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
1283 | return 0; |
1284 | } | |
1285 | ||
1286 | int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1287 | { | |
c96e7c7a | 1288 | struct ttm_mem_type_manager *man; |
ba4e7d97 TH |
1289 | int ret = -EINVAL; |
1290 | ||
1291 | if (mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1292 | pr_err("Illegal memory type %d\n", mem_type); |
ba4e7d97 TH |
1293 | return ret; |
1294 | } | |
c96e7c7a | 1295 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
1296 | |
1297 | if (!man->has_type) { | |
25d0479a JP |
1298 | pr_err("Trying to take down uninitialized memory manager type %u\n", |
1299 | mem_type); | |
ba4e7d97 TH |
1300 | return ret; |
1301 | } | |
1302 | ||
1303 | man->use_type = false; | |
1304 | man->has_type = false; | |
1305 | ||
1306 | ret = 0; | |
1307 | if (mem_type > 0) { | |
ca262a99 | 1308 | ttm_bo_force_list_clean(bdev, mem_type, false); |
ba4e7d97 | 1309 | |
d961db75 | 1310 | ret = (*man->func->takedown)(man); |
ba4e7d97 TH |
1311 | } |
1312 | ||
1313 | return ret; | |
1314 | } | |
1315 | EXPORT_SYMBOL(ttm_bo_clean_mm); | |
1316 | ||
1317 | int ttm_bo_evict_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1318 | { | |
1319 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
1320 | ||
1321 | if (mem_type == 0 || mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1322 | pr_err("Illegal memory manager memory type %u\n", mem_type); |
ba4e7d97 TH |
1323 | return -EINVAL; |
1324 | } | |
1325 | ||
1326 | if (!man->has_type) { | |
25d0479a | 1327 | pr_err("Memory type %u has not been initialized\n", mem_type); |
ba4e7d97 TH |
1328 | return 0; |
1329 | } | |
1330 | ||
ca262a99 | 1331 | return ttm_bo_force_list_clean(bdev, mem_type, true); |
ba4e7d97 TH |
1332 | } |
1333 | EXPORT_SYMBOL(ttm_bo_evict_mm); | |
1334 | ||
1335 | int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type, | |
ca262a99 | 1336 | unsigned long p_size) |
ba4e7d97 TH |
1337 | { |
1338 | int ret = -EINVAL; | |
1339 | struct ttm_mem_type_manager *man; | |
1340 | ||
dbc4a5b8 | 1341 | BUG_ON(type >= TTM_NUM_MEM_TYPES); |
ba4e7d97 | 1342 | man = &bdev->man[type]; |
dbc4a5b8 | 1343 | BUG_ON(man->has_type); |
eba67093 TH |
1344 | man->io_reserve_fastpath = true; |
1345 | man->use_io_reserve_lru = false; | |
1346 | mutex_init(&man->io_reserve_mutex); | |
1347 | INIT_LIST_HEAD(&man->io_reserve_lru); | |
ba4e7d97 TH |
1348 | |
1349 | ret = bdev->driver->init_mem_type(bdev, type, man); | |
1350 | if (ret) | |
1351 | return ret; | |
d961db75 | 1352 | man->bdev = bdev; |
ba4e7d97 TH |
1353 | |
1354 | ret = 0; | |
1355 | if (type != TTM_PL_SYSTEM) { | |
d961db75 | 1356 | ret = (*man->func->init)(man, p_size); |
ba4e7d97 TH |
1357 | if (ret) |
1358 | return ret; | |
1359 | } | |
1360 | man->has_type = true; | |
1361 | man->use_type = true; | |
1362 | man->size = p_size; | |
1363 | ||
1364 | INIT_LIST_HEAD(&man->lru); | |
1365 | ||
1366 | return 0; | |
1367 | } | |
1368 | EXPORT_SYMBOL(ttm_bo_init_mm); | |
1369 | ||
a987fcaa TH |
1370 | static void ttm_bo_global_kobj_release(struct kobject *kobj) |
1371 | { | |
1372 | struct ttm_bo_global *glob = | |
1373 | container_of(kobj, struct ttm_bo_global, kobj); | |
1374 | ||
a987fcaa TH |
1375 | ttm_mem_unregister_shrink(glob->mem_glob, &glob->shrink); |
1376 | __free_page(glob->dummy_read_page); | |
1377 | kfree(glob); | |
1378 | } | |
1379 | ||
ba4420c2 | 1380 | void ttm_bo_global_release(struct drm_global_reference *ref) |
a987fcaa TH |
1381 | { |
1382 | struct ttm_bo_global *glob = ref->object; | |
1383 | ||
1384 | kobject_del(&glob->kobj); | |
1385 | kobject_put(&glob->kobj); | |
1386 | } | |
1387 | EXPORT_SYMBOL(ttm_bo_global_release); | |
1388 | ||
ba4420c2 | 1389 | int ttm_bo_global_init(struct drm_global_reference *ref) |
a987fcaa TH |
1390 | { |
1391 | struct ttm_bo_global_ref *bo_ref = | |
1392 | container_of(ref, struct ttm_bo_global_ref, ref); | |
1393 | struct ttm_bo_global *glob = ref->object; | |
1394 | int ret; | |
1395 | ||
1396 | mutex_init(&glob->device_list_mutex); | |
1397 | spin_lock_init(&glob->lru_lock); | |
1398 | glob->mem_glob = bo_ref->mem_glob; | |
1399 | glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); | |
1400 | ||
1401 | if (unlikely(glob->dummy_read_page == NULL)) { | |
1402 | ret = -ENOMEM; | |
1403 | goto out_no_drp; | |
1404 | } | |
1405 | ||
1406 | INIT_LIST_HEAD(&glob->swap_lru); | |
1407 | INIT_LIST_HEAD(&glob->device_list); | |
1408 | ||
1409 | ttm_mem_init_shrink(&glob->shrink, ttm_bo_swapout); | |
1410 | ret = ttm_mem_register_shrink(glob->mem_glob, &glob->shrink); | |
1411 | if (unlikely(ret != 0)) { | |
25d0479a | 1412 | pr_err("Could not register buffer object swapout\n"); |
a987fcaa TH |
1413 | goto out_no_shrink; |
1414 | } | |
1415 | ||
a987fcaa TH |
1416 | atomic_set(&glob->bo_count, 0); |
1417 | ||
b642ed06 RD |
1418 | ret = kobject_init_and_add( |
1419 | &glob->kobj, &ttm_bo_glob_kobj_type, ttm_get_kobj(), "buffer_objects"); | |
a987fcaa TH |
1420 | if (unlikely(ret != 0)) |
1421 | kobject_put(&glob->kobj); | |
1422 | return ret; | |
1423 | out_no_shrink: | |
1424 | __free_page(glob->dummy_read_page); | |
1425 | out_no_drp: | |
1426 | kfree(glob); | |
1427 | return ret; | |
1428 | } | |
1429 | EXPORT_SYMBOL(ttm_bo_global_init); | |
1430 | ||
1431 | ||
ba4e7d97 TH |
1432 | int ttm_bo_device_release(struct ttm_bo_device *bdev) |
1433 | { | |
1434 | int ret = 0; | |
1435 | unsigned i = TTM_NUM_MEM_TYPES; | |
1436 | struct ttm_mem_type_manager *man; | |
a987fcaa | 1437 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 TH |
1438 | |
1439 | while (i--) { | |
1440 | man = &bdev->man[i]; | |
1441 | if (man->has_type) { | |
1442 | man->use_type = false; | |
1443 | if ((i != TTM_PL_SYSTEM) && ttm_bo_clean_mm(bdev, i)) { | |
1444 | ret = -EBUSY; | |
25d0479a JP |
1445 | pr_err("DRM memory manager type %d is not clean\n", |
1446 | i); | |
ba4e7d97 TH |
1447 | } |
1448 | man->has_type = false; | |
1449 | } | |
1450 | } | |
1451 | ||
a987fcaa TH |
1452 | mutex_lock(&glob->device_list_mutex); |
1453 | list_del(&bdev->device_list); | |
1454 | mutex_unlock(&glob->device_list_mutex); | |
1455 | ||
f094cfc6 | 1456 | cancel_delayed_work_sync(&bdev->wq); |
ba4e7d97 TH |
1457 | |
1458 | while (ttm_bo_delayed_delete(bdev, true)) | |
1459 | ; | |
1460 | ||
a987fcaa | 1461 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
1462 | if (list_empty(&bdev->ddestroy)) |
1463 | TTM_DEBUG("Delayed destroy list was clean\n"); | |
1464 | ||
1465 | if (list_empty(&bdev->man[0].lru)) | |
1466 | TTM_DEBUG("Swap list was clean\n"); | |
a987fcaa | 1467 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1468 | |
72525b3f | 1469 | drm_vma_offset_manager_destroy(&bdev->vma_manager); |
ba4e7d97 | 1470 | |
ba4e7d97 TH |
1471 | return ret; |
1472 | } | |
1473 | EXPORT_SYMBOL(ttm_bo_device_release); | |
1474 | ||
ba4e7d97 | 1475 | int ttm_bo_device_init(struct ttm_bo_device *bdev, |
a987fcaa TH |
1476 | struct ttm_bo_global *glob, |
1477 | struct ttm_bo_driver *driver, | |
44d847b7 | 1478 | struct address_space *mapping, |
51c8b407 | 1479 | uint64_t file_page_offset, |
ad49f501 | 1480 | bool need_dma32) |
ba4e7d97 TH |
1481 | { |
1482 | int ret = -EINVAL; | |
1483 | ||
ba4e7d97 | 1484 | bdev->driver = driver; |
ba4e7d97 TH |
1485 | |
1486 | memset(bdev->man, 0, sizeof(bdev->man)); | |
1487 | ||
ba4e7d97 TH |
1488 | /* |
1489 | * Initialize the system memory buffer type. | |
1490 | * Other types need to be driver / IOCTL initialized. | |
1491 | */ | |
ca262a99 | 1492 | ret = ttm_bo_init_mm(bdev, TTM_PL_SYSTEM, 0); |
ba4e7d97 | 1493 | if (unlikely(ret != 0)) |
a987fcaa | 1494 | goto out_no_sys; |
ba4e7d97 | 1495 | |
72525b3f DH |
1496 | drm_vma_offset_manager_init(&bdev->vma_manager, file_page_offset, |
1497 | 0x10000000); | |
ba4e7d97 | 1498 | INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue); |
ba4e7d97 | 1499 | INIT_LIST_HEAD(&bdev->ddestroy); |
44d847b7 | 1500 | bdev->dev_mapping = mapping; |
a987fcaa | 1501 | bdev->glob = glob; |
ad49f501 | 1502 | bdev->need_dma32 = need_dma32; |
65705962 | 1503 | bdev->val_seq = 0; |
a987fcaa TH |
1504 | mutex_lock(&glob->device_list_mutex); |
1505 | list_add_tail(&bdev->device_list, &glob->device_list); | |
1506 | mutex_unlock(&glob->device_list_mutex); | |
ba4e7d97 TH |
1507 | |
1508 | return 0; | |
a987fcaa | 1509 | out_no_sys: |
ba4e7d97 TH |
1510 | return ret; |
1511 | } | |
1512 | EXPORT_SYMBOL(ttm_bo_device_init); | |
1513 | ||
1514 | /* | |
1515 | * buffer object vm functions. | |
1516 | */ | |
1517 | ||
1518 | bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
1519 | { | |
1520 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
1521 | ||
1522 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) { | |
1523 | if (mem->mem_type == TTM_PL_SYSTEM) | |
1524 | return false; | |
1525 | ||
1526 | if (man->flags & TTM_MEMTYPE_FLAG_CMA) | |
1527 | return false; | |
1528 | ||
1529 | if (mem->placement & TTM_PL_FLAG_CACHED) | |
1530 | return false; | |
1531 | } | |
1532 | return true; | |
1533 | } | |
1534 | ||
eba67093 | 1535 | void ttm_bo_unmap_virtual_locked(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
1536 | { |
1537 | struct ttm_bo_device *bdev = bo->bdev; | |
ba4e7d97 | 1538 | |
51335df9 | 1539 | drm_vma_node_unmap(&bo->vma_node, bdev->dev_mapping); |
eba67093 | 1540 | ttm_mem_io_free_vm(bo); |
ba4e7d97 | 1541 | } |
eba67093 TH |
1542 | |
1543 | void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo) | |
1544 | { | |
1545 | struct ttm_bo_device *bdev = bo->bdev; | |
1546 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; | |
1547 | ||
1548 | ttm_mem_io_lock(man, false); | |
1549 | ttm_bo_unmap_virtual_locked(bo); | |
1550 | ttm_mem_io_unlock(man); | |
ba4e7d97 | 1551 | } |
eba67093 TH |
1552 | |
1553 | ||
e024e110 | 1554 | EXPORT_SYMBOL(ttm_bo_unmap_virtual); |
ba4e7d97 | 1555 | |
ba4e7d97 | 1556 | int ttm_bo_wait(struct ttm_buffer_object *bo, |
1717c0e2 | 1557 | bool lazy, bool interruptible, bool no_wait) |
ba4e7d97 | 1558 | { |
f2c24b83 ML |
1559 | struct reservation_object_list *fobj; |
1560 | struct reservation_object *resv; | |
1561 | struct fence *excl; | |
1562 | long timeout = 15 * HZ; | |
1563 | int i; | |
7040138f | 1564 | |
f2c24b83 ML |
1565 | resv = bo->resv; |
1566 | fobj = reservation_object_get_list(resv); | |
1567 | excl = reservation_object_get_excl(resv); | |
1568 | if (excl) { | |
1569 | if (!fence_is_signaled(excl)) { | |
1570 | if (no_wait) | |
1571 | return -EBUSY; | |
ba4e7d97 | 1572 | |
f2c24b83 ML |
1573 | timeout = fence_wait_timeout(excl, |
1574 | interruptible, timeout); | |
ba4e7d97 | 1575 | } |
f2c24b83 | 1576 | } |
ba4e7d97 | 1577 | |
f2c24b83 ML |
1578 | for (i = 0; fobj && timeout > 0 && i < fobj->shared_count; ++i) { |
1579 | struct fence *fence; | |
1580 | fence = rcu_dereference_protected(fobj->shared[i], | |
1581 | reservation_object_held(resv)); | |
ba4e7d97 | 1582 | |
f2c24b83 ML |
1583 | if (!fence_is_signaled(fence)) { |
1584 | if (no_wait) | |
1585 | return -EBUSY; | |
dd7cfd64 | 1586 | |
f2c24b83 ML |
1587 | timeout = fence_wait_timeout(fence, |
1588 | interruptible, timeout); | |
ba4e7d97 TH |
1589 | } |
1590 | } | |
f2c24b83 ML |
1591 | |
1592 | if (timeout < 0) | |
1593 | return timeout; | |
1594 | ||
1595 | if (timeout == 0) | |
1596 | return -EBUSY; | |
1597 | ||
1598 | reservation_object_add_excl_fence(resv, NULL); | |
1599 | clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); | |
1600 | return 0; | |
ba4e7d97 TH |
1601 | } |
1602 | EXPORT_SYMBOL(ttm_bo_wait); | |
1603 | ||
ba4e7d97 TH |
1604 | int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) |
1605 | { | |
1606 | int ret = 0; | |
1607 | ||
1608 | /* | |
8cfe92d6 | 1609 | * Using ttm_bo_reserve makes sure the lru lists are updated. |
ba4e7d97 TH |
1610 | */ |
1611 | ||
0eff2a24 | 1612 | ret = ttm_bo_reserve(bo, true, no_wait, false, NULL); |
ba4e7d97 TH |
1613 | if (unlikely(ret != 0)) |
1614 | return ret; | |
1717c0e2 | 1615 | ret = ttm_bo_wait(bo, false, true, no_wait); |
ba4e7d97 TH |
1616 | if (likely(ret == 0)) |
1617 | atomic_inc(&bo->cpu_writers); | |
1618 | ttm_bo_unreserve(bo); | |
1619 | return ret; | |
1620 | } | |
d1ede145 | 1621 | EXPORT_SYMBOL(ttm_bo_synccpu_write_grab); |
ba4e7d97 TH |
1622 | |
1623 | void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo) | |
1624 | { | |
654aa792 | 1625 | atomic_dec(&bo->cpu_writers); |
ba4e7d97 | 1626 | } |
d1ede145 | 1627 | EXPORT_SYMBOL(ttm_bo_synccpu_write_release); |
ba4e7d97 TH |
1628 | |
1629 | /** | |
1630 | * A buffer object shrink method that tries to swap out the first | |
1631 | * buffer object on the bo_global::swap_lru list. | |
1632 | */ | |
1633 | ||
1634 | static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) | |
1635 | { | |
a987fcaa TH |
1636 | struct ttm_bo_global *glob = |
1637 | container_of(shrink, struct ttm_bo_global, shrink); | |
ba4e7d97 TH |
1638 | struct ttm_buffer_object *bo; |
1639 | int ret = -EBUSY; | |
1640 | int put_count; | |
1641 | uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); | |
1642 | ||
a987fcaa | 1643 | spin_lock(&glob->lru_lock); |
2b7b3ad2 | 1644 | list_for_each_entry(bo, &glob->swap_lru, swap) { |
0eff2a24 | 1645 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
2b7b3ad2 ML |
1646 | if (!ret) |
1647 | break; | |
1648 | } | |
85b144f8 | 1649 | |
2b7b3ad2 ML |
1650 | if (ret) { |
1651 | spin_unlock(&glob->lru_lock); | |
1652 | return ret; | |
1653 | } | |
e1efc9b6 | 1654 | |
2b7b3ad2 | 1655 | kref_get(&bo->list_kref); |
ba4e7d97 | 1656 | |
2b7b3ad2 ML |
1657 | if (!list_empty(&bo->ddestroy)) { |
1658 | ret = ttm_bo_cleanup_refs_and_unlock(bo, false, false); | |
1659 | kref_put(&bo->list_kref, ttm_bo_release_list); | |
1660 | return ret; | |
ba4e7d97 TH |
1661 | } |
1662 | ||
ba4e7d97 | 1663 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 1664 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1665 | |
d6ea8886 | 1666 | ttm_bo_list_ref_sub(bo, put_count, true); |
ba4e7d97 TH |
1667 | |
1668 | /** | |
1669 | * Wait for GPU, then move to system cached. | |
1670 | */ | |
1671 | ||
1717c0e2 | 1672 | ret = ttm_bo_wait(bo, false, false, false); |
ba4e7d97 TH |
1673 | |
1674 | if (unlikely(ret != 0)) | |
1675 | goto out; | |
1676 | ||
1677 | if ((bo->mem.placement & swap_placement) != swap_placement) { | |
1678 | struct ttm_mem_reg evict_mem; | |
1679 | ||
1680 | evict_mem = bo->mem; | |
1681 | evict_mem.mm_node = NULL; | |
1682 | evict_mem.placement = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED; | |
1683 | evict_mem.mem_type = TTM_PL_SYSTEM; | |
1684 | ||
1685 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, | |
97a875cb | 1686 | false, false); |
ba4e7d97 TH |
1687 | if (unlikely(ret != 0)) |
1688 | goto out; | |
1689 | } | |
1690 | ||
1691 | ttm_bo_unmap_virtual(bo); | |
1692 | ||
1693 | /** | |
1694 | * Swap out. Buffer will be swapped in again as soon as | |
1695 | * anyone tries to access a ttm page. | |
1696 | */ | |
1697 | ||
3f09ea4e TH |
1698 | if (bo->bdev->driver->swap_notify) |
1699 | bo->bdev->driver->swap_notify(bo); | |
1700 | ||
5df23979 | 1701 | ret = ttm_tt_swapout(bo->ttm, bo->persistent_swap_storage); |
ba4e7d97 TH |
1702 | out: |
1703 | ||
1704 | /** | |
1705 | * | |
1706 | * Unreserve without putting on LRU to avoid swapping out an | |
1707 | * already swapped buffer. | |
1708 | */ | |
1709 | ||
c7523083 | 1710 | __ttm_bo_unreserve(bo); |
ba4e7d97 TH |
1711 | kref_put(&bo->list_kref, ttm_bo_release_list); |
1712 | return ret; | |
1713 | } | |
1714 | ||
1715 | void ttm_bo_swapout_all(struct ttm_bo_device *bdev) | |
1716 | { | |
a987fcaa | 1717 | while (ttm_bo_swapout(&bdev->glob->shrink) == 0) |
ba4e7d97 TH |
1718 | ; |
1719 | } | |
e99e1e78 | 1720 | EXPORT_SYMBOL(ttm_bo_swapout_all); |
c58f009e TH |
1721 | |
1722 | /** | |
1723 | * ttm_bo_wait_unreserved - interruptible wait for a buffer object to become | |
1724 | * unreserved | |
1725 | * | |
1726 | * @bo: Pointer to buffer | |
1727 | */ | |
1728 | int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo) | |
1729 | { | |
1730 | int ret; | |
1731 | ||
1732 | /* | |
1733 | * In the absense of a wait_unlocked API, | |
1734 | * Use the bo::wu_mutex to avoid triggering livelocks due to | |
1735 | * concurrent use of this function. Note that this use of | |
1736 | * bo::wu_mutex can go away if we change locking order to | |
1737 | * mmap_sem -> bo::reserve. | |
1738 | */ | |
1739 | ret = mutex_lock_interruptible(&bo->wu_mutex); | |
1740 | if (unlikely(ret != 0)) | |
1741 | return -ERESTARTSYS; | |
1742 | if (!ww_mutex_is_locked(&bo->resv->lock)) | |
1743 | goto out_unlock; | |
c7523083 | 1744 | ret = __ttm_bo_reserve(bo, true, false, false, NULL); |
c58f009e TH |
1745 | if (unlikely(ret != 0)) |
1746 | goto out_unlock; | |
c7523083 | 1747 | __ttm_bo_unreserve(bo); |
c58f009e TH |
1748 | |
1749 | out_unlock: | |
1750 | mutex_unlock(&bo->wu_mutex); | |
1751 | return ret; | |
1752 | } |