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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 | { | |
233 | struct ttm_bo_device *bdev = bo->bdev; | |
234 | struct ttm_mem_type_manager *man; | |
235 | ||
236 | lockdep_assert_held(&bo->resv->lock.base); | |
237 | ||
238 | if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT) { | |
239 | list_del_init(&bo->swap); | |
240 | list_del_init(&bo->lru); | |
241 | ||
242 | } else { | |
243 | if (bo->ttm && !(bo->ttm->page_flags & TTM_PAGE_FLAG_SG)) | |
244 | list_move_tail(&bo->swap, &bo->glob->swap_lru); | |
245 | ||
246 | man = &bdev->man[bo->mem.mem_type]; | |
247 | list_move_tail(&bo->lru, &man->lru); | |
248 | } | |
249 | } | |
250 | EXPORT_SYMBOL(ttm_bo_move_to_lru_tail); | |
251 | ||
ba4e7d97 TH |
252 | /* |
253 | * Call bo->mutex locked. | |
254 | */ | |
ba4e7d97 TH |
255 | static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc) |
256 | { | |
257 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 258 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 TH |
259 | int ret = 0; |
260 | uint32_t page_flags = 0; | |
261 | ||
262 | TTM_ASSERT_LOCKED(&bo->mutex); | |
263 | bo->ttm = NULL; | |
264 | ||
ad49f501 DA |
265 | if (bdev->need_dma32) |
266 | page_flags |= TTM_PAGE_FLAG_DMA32; | |
267 | ||
ba4e7d97 TH |
268 | switch (bo->type) { |
269 | case ttm_bo_type_device: | |
270 | if (zero_alloc) | |
271 | page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC; | |
272 | case ttm_bo_type_kernel: | |
649bf3ca JG |
273 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, |
274 | page_flags, glob->dummy_read_page); | |
ba4e7d97 TH |
275 | if (unlikely(bo->ttm == NULL)) |
276 | ret = -ENOMEM; | |
277 | break; | |
129b78bf DA |
278 | case ttm_bo_type_sg: |
279 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, | |
280 | page_flags | TTM_PAGE_FLAG_SG, | |
281 | glob->dummy_read_page); | |
282 | if (unlikely(bo->ttm == NULL)) { | |
283 | ret = -ENOMEM; | |
284 | break; | |
285 | } | |
286 | bo->ttm->sg = bo->sg; | |
287 | break; | |
ba4e7d97 | 288 | default: |
25d0479a | 289 | pr_err("Illegal buffer object type\n"); |
ba4e7d97 TH |
290 | ret = -EINVAL; |
291 | break; | |
292 | } | |
293 | ||
294 | return ret; | |
295 | } | |
296 | ||
297 | static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo, | |
298 | struct ttm_mem_reg *mem, | |
9d87fa21 | 299 | bool evict, bool interruptible, |
97a875cb | 300 | bool no_wait_gpu) |
ba4e7d97 TH |
301 | { |
302 | struct ttm_bo_device *bdev = bo->bdev; | |
303 | bool old_is_pci = ttm_mem_reg_is_pci(bdev, &bo->mem); | |
304 | bool new_is_pci = ttm_mem_reg_is_pci(bdev, mem); | |
305 | struct ttm_mem_type_manager *old_man = &bdev->man[bo->mem.mem_type]; | |
306 | struct ttm_mem_type_manager *new_man = &bdev->man[mem->mem_type]; | |
307 | int ret = 0; | |
308 | ||
309 | if (old_is_pci || new_is_pci || | |
eba67093 TH |
310 | ((mem->placement & bo->mem.placement & TTM_PL_MASK_CACHING) == 0)) { |
311 | ret = ttm_mem_io_lock(old_man, true); | |
312 | if (unlikely(ret != 0)) | |
313 | goto out_err; | |
314 | ttm_bo_unmap_virtual_locked(bo); | |
315 | ttm_mem_io_unlock(old_man); | |
316 | } | |
ba4e7d97 TH |
317 | |
318 | /* | |
319 | * Create and bind a ttm if required. | |
320 | */ | |
321 | ||
8d3bb236 BS |
322 | if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) { |
323 | if (bo->ttm == NULL) { | |
ff02b13f BS |
324 | bool zero = !(old_man->flags & TTM_MEMTYPE_FLAG_FIXED); |
325 | ret = ttm_bo_add_ttm(bo, zero); | |
8d3bb236 BS |
326 | if (ret) |
327 | goto out_err; | |
328 | } | |
ba4e7d97 TH |
329 | |
330 | ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement); | |
331 | if (ret) | |
87ef9209 | 332 | goto out_err; |
ba4e7d97 TH |
333 | |
334 | if (mem->mem_type != TTM_PL_SYSTEM) { | |
335 | ret = ttm_tt_bind(bo->ttm, mem); | |
336 | if (ret) | |
337 | goto out_err; | |
338 | } | |
339 | ||
340 | if (bo->mem.mem_type == TTM_PL_SYSTEM) { | |
82ef594e BS |
341 | if (bdev->driver->move_notify) |
342 | bdev->driver->move_notify(bo, mem); | |
ca262a99 | 343 | bo->mem = *mem; |
ba4e7d97 | 344 | mem->mm_node = NULL; |
ba4e7d97 TH |
345 | goto moved; |
346 | } | |
ba4e7d97 TH |
347 | } |
348 | ||
9f1feed2 BS |
349 | if (bdev->driver->move_notify) |
350 | bdev->driver->move_notify(bo, mem); | |
351 | ||
ba4e7d97 TH |
352 | if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
353 | !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) | |
97a875cb | 354 | ret = ttm_bo_move_ttm(bo, evict, no_wait_gpu, mem); |
ba4e7d97 TH |
355 | else if (bdev->driver->move) |
356 | ret = bdev->driver->move(bo, evict, interruptible, | |
97a875cb | 357 | no_wait_gpu, mem); |
ba4e7d97 | 358 | else |
97a875cb | 359 | ret = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, mem); |
ba4e7d97 | 360 | |
9f1feed2 BS |
361 | if (ret) { |
362 | if (bdev->driver->move_notify) { | |
363 | struct ttm_mem_reg tmp_mem = *mem; | |
364 | *mem = bo->mem; | |
365 | bo->mem = tmp_mem; | |
366 | bdev->driver->move_notify(bo, mem); | |
367 | bo->mem = *mem; | |
014b3440 | 368 | *mem = tmp_mem; |
9f1feed2 | 369 | } |
ba4e7d97 | 370 | |
9f1feed2 BS |
371 | goto out_err; |
372 | } | |
dc97b340 | 373 | |
ba4e7d97 TH |
374 | moved: |
375 | if (bo->evicted) { | |
9ef7506f RC |
376 | if (bdev->driver->invalidate_caches) { |
377 | ret = bdev->driver->invalidate_caches(bdev, bo->mem.placement); | |
378 | if (ret) | |
379 | pr_err("Can not flush read caches\n"); | |
380 | } | |
ba4e7d97 TH |
381 | bo->evicted = false; |
382 | } | |
383 | ||
384 | if (bo->mem.mm_node) { | |
d961db75 | 385 | bo->offset = (bo->mem.start << PAGE_SHIFT) + |
ba4e7d97 TH |
386 | bdev->man[bo->mem.mem_type].gpu_offset; |
387 | bo->cur_placement = bo->mem.placement; | |
354fb52c TH |
388 | } else |
389 | bo->offset = 0; | |
ba4e7d97 TH |
390 | |
391 | return 0; | |
392 | ||
393 | out_err: | |
394 | new_man = &bdev->man[bo->mem.mem_type]; | |
395 | if ((new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && bo->ttm) { | |
396 | ttm_tt_unbind(bo->ttm); | |
397 | ttm_tt_destroy(bo->ttm); | |
398 | bo->ttm = NULL; | |
399 | } | |
400 | ||
401 | return ret; | |
402 | } | |
403 | ||
1df6a2eb | 404 | /** |
40d857bb | 405 | * Call bo::reserved. |
1df6a2eb | 406 | * Will release GPU memory type usage on destruction. |
40d857bb TH |
407 | * This is the place to put in driver specific hooks to release |
408 | * driver private resources. | |
409 | * Will release the bo::reserved lock. | |
1df6a2eb TH |
410 | */ |
411 | ||
412 | static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo) | |
413 | { | |
dc97b340 JG |
414 | if (bo->bdev->driver->move_notify) |
415 | bo->bdev->driver->move_notify(bo, NULL); | |
416 | ||
1df6a2eb | 417 | if (bo->ttm) { |
1df6a2eb TH |
418 | ttm_tt_unbind(bo->ttm); |
419 | ttm_tt_destroy(bo->ttm); | |
420 | bo->ttm = NULL; | |
1df6a2eb | 421 | } |
40d857bb | 422 | ttm_bo_mem_put(bo, &bo->mem); |
1df6a2eb | 423 | |
5e338405 | 424 | ww_mutex_unlock (&bo->resv->lock); |
1df6a2eb TH |
425 | } |
426 | ||
f2c24b83 ML |
427 | static void ttm_bo_flush_all_fences(struct ttm_buffer_object *bo) |
428 | { | |
429 | struct reservation_object_list *fobj; | |
430 | struct fence *fence; | |
431 | int i; | |
432 | ||
433 | fobj = reservation_object_get_list(bo->resv); | |
434 | fence = reservation_object_get_excl(bo->resv); | |
435 | if (fence && !fence->ops->signaled) | |
436 | fence_enable_sw_signaling(fence); | |
437 | ||
438 | for (i = 0; fobj && i < fobj->shared_count; ++i) { | |
439 | fence = rcu_dereference_protected(fobj->shared[i], | |
440 | reservation_object_held(bo->resv)); | |
441 | ||
442 | if (!fence->ops->signaled) | |
443 | fence_enable_sw_signaling(fence); | |
444 | } | |
445 | } | |
446 | ||
e1efc9b6 | 447 | static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
448 | { |
449 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 450 | struct ttm_bo_global *glob = bo->glob; |
e1efc9b6 | 451 | int put_count; |
ba4e7d97 TH |
452 | int ret; |
453 | ||
4154f051 | 454 | spin_lock(&glob->lru_lock); |
0eff2a24 | 455 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
4154f051 | 456 | |
dd7cfd64 | 457 | if (!ret) { |
f2c24b83 | 458 | if (!ttm_bo_wait(bo, false, false, true)) { |
dd7cfd64 | 459 | put_count = ttm_bo_del_from_lru(bo); |
ba4e7d97 | 460 | |
dd7cfd64 ML |
461 | spin_unlock(&glob->lru_lock); |
462 | ttm_bo_cleanup_memtype_use(bo); | |
ba4e7d97 | 463 | |
dd7cfd64 | 464 | ttm_bo_list_ref_sub(bo, put_count, true); |
4154f051 | 465 | |
dd7cfd64 | 466 | return; |
f2c24b83 ML |
467 | } else |
468 | ttm_bo_flush_all_fences(bo); | |
15205fbc TH |
469 | |
470 | /* | |
471 | * Make NO_EVICT bos immediately available to | |
472 | * shrinkers, now that they are queued for | |
473 | * destruction. | |
474 | */ | |
475 | if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT) { | |
476 | bo->mem.placement &= ~TTM_PL_FLAG_NO_EVICT; | |
477 | ttm_bo_add_to_lru(bo); | |
478 | } | |
479 | ||
c7523083 | 480 | __ttm_bo_unreserve(bo); |
15205fbc | 481 | } |
e1efc9b6 TH |
482 | |
483 | kref_get(&bo->list_kref); | |
484 | list_add_tail(&bo->ddestroy, &bdev->ddestroy); | |
485 | spin_unlock(&glob->lru_lock); | |
e1efc9b6 | 486 | |
e1efc9b6 TH |
487 | schedule_delayed_work(&bdev->wq, |
488 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
489 | } | |
490 | ||
491 | /** | |
85b144f8 | 492 | * function ttm_bo_cleanup_refs_and_unlock |
e1efc9b6 TH |
493 | * If bo idle, remove from delayed- and lru lists, and unref. |
494 | * If not idle, do nothing. | |
495 | * | |
85b144f8 ML |
496 | * Must be called with lru_lock and reservation held, this function |
497 | * will drop both before returning. | |
498 | * | |
e1efc9b6 | 499 | * @interruptible Any sleeps should occur interruptibly. |
e1efc9b6 TH |
500 | * @no_wait_gpu Never wait for gpu. Return -EBUSY instead. |
501 | */ | |
502 | ||
85b144f8 ML |
503 | static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, |
504 | bool interruptible, | |
505 | bool no_wait_gpu) | |
e1efc9b6 TH |
506 | { |
507 | struct ttm_bo_global *glob = bo->glob; | |
508 | int put_count; | |
85b144f8 | 509 | int ret; |
e1efc9b6 | 510 | |
85b144f8 | 511 | ret = ttm_bo_wait(bo, false, false, true); |
e1efc9b6 | 512 | |
85b144f8 | 513 | if (ret && !no_wait_gpu) { |
472db7ab ML |
514 | long lret; |
515 | ww_mutex_unlock(&bo->resv->lock); | |
516 | spin_unlock(&glob->lru_lock); | |
517 | ||
518 | lret = reservation_object_wait_timeout_rcu(bo->resv, | |
519 | true, | |
520 | interruptible, | |
521 | 30 * HZ); | |
522 | ||
523 | if (lret < 0) | |
524 | return lret; | |
525 | else if (lret == 0) | |
526 | return -EBUSY; | |
b8e902f2 | 527 | |
85b144f8 | 528 | spin_lock(&glob->lru_lock); |
0eff2a24 | 529 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
b8e902f2 | 530 | |
85b144f8 ML |
531 | /* |
532 | * We raced, and lost, someone else holds the reservation now, | |
533 | * and is probably busy in ttm_bo_cleanup_memtype_use. | |
534 | * | |
535 | * Even if it's not the case, because we finished waiting any | |
536 | * delayed destruction would succeed, so just return success | |
537 | * here. | |
538 | */ | |
539 | if (ret) { | |
540 | spin_unlock(&glob->lru_lock); | |
541 | return 0; | |
542 | } | |
7040138f ML |
543 | |
544 | /* | |
545 | * remove sync_obj with ttm_bo_wait, the wait should be | |
546 | * finished, and no new wait object should have been added. | |
547 | */ | |
7040138f ML |
548 | ret = ttm_bo_wait(bo, false, false, true); |
549 | WARN_ON(ret); | |
550 | } | |
ba4e7d97 | 551 | |
85b144f8 | 552 | if (ret || unlikely(list_empty(&bo->ddestroy))) { |
c7523083 | 553 | __ttm_bo_unreserve(bo); |
a987fcaa | 554 | spin_unlock(&glob->lru_lock); |
85b144f8 | 555 | return ret; |
ba4e7d97 TH |
556 | } |
557 | ||
e1efc9b6 TH |
558 | put_count = ttm_bo_del_from_lru(bo); |
559 | list_del_init(&bo->ddestroy); | |
560 | ++put_count; | |
561 | ||
562 | spin_unlock(&glob->lru_lock); | |
563 | ttm_bo_cleanup_memtype_use(bo); | |
564 | ||
d6ea8886 | 565 | ttm_bo_list_ref_sub(bo, put_count, true); |
e1efc9b6 TH |
566 | |
567 | return 0; | |
ba4e7d97 TH |
568 | } |
569 | ||
570 | /** | |
571 | * Traverse the delayed list, and call ttm_bo_cleanup_refs on all | |
572 | * encountered buffers. | |
573 | */ | |
574 | ||
575 | static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) | |
576 | { | |
a987fcaa | 577 | struct ttm_bo_global *glob = bdev->glob; |
1a961ce0 LB |
578 | struct ttm_buffer_object *entry = NULL; |
579 | int ret = 0; | |
ba4e7d97 | 580 | |
a987fcaa | 581 | spin_lock(&glob->lru_lock); |
1a961ce0 LB |
582 | if (list_empty(&bdev->ddestroy)) |
583 | goto out_unlock; | |
584 | ||
585 | entry = list_first_entry(&bdev->ddestroy, | |
586 | struct ttm_buffer_object, ddestroy); | |
587 | kref_get(&entry->list_kref); | |
588 | ||
589 | for (;;) { | |
590 | struct ttm_buffer_object *nentry = NULL; | |
591 | ||
592 | if (entry->ddestroy.next != &bdev->ddestroy) { | |
593 | nentry = list_first_entry(&entry->ddestroy, | |
594 | struct ttm_buffer_object, ddestroy); | |
ba4e7d97 TH |
595 | kref_get(&nentry->list_kref); |
596 | } | |
ba4e7d97 | 597 | |
0eff2a24 | 598 | ret = __ttm_bo_reserve(entry, false, true, false, NULL); |
63d0a419 ML |
599 | if (remove_all && ret) { |
600 | spin_unlock(&glob->lru_lock); | |
c7523083 | 601 | ret = __ttm_bo_reserve(entry, false, false, |
0eff2a24 | 602 | false, NULL); |
63d0a419 ML |
603 | spin_lock(&glob->lru_lock); |
604 | } | |
605 | ||
85b144f8 ML |
606 | if (!ret) |
607 | ret = ttm_bo_cleanup_refs_and_unlock(entry, false, | |
608 | !remove_all); | |
609 | else | |
610 | spin_unlock(&glob->lru_lock); | |
611 | ||
ba4e7d97 | 612 | kref_put(&entry->list_kref, ttm_bo_release_list); |
1a961ce0 LB |
613 | entry = nentry; |
614 | ||
615 | if (ret || !entry) | |
616 | goto out; | |
ba4e7d97 | 617 | |
a987fcaa | 618 | spin_lock(&glob->lru_lock); |
1a961ce0 | 619 | if (list_empty(&entry->ddestroy)) |
ba4e7d97 TH |
620 | break; |
621 | } | |
ba4e7d97 | 622 | |
1a961ce0 LB |
623 | out_unlock: |
624 | spin_unlock(&glob->lru_lock); | |
625 | out: | |
626 | if (entry) | |
627 | kref_put(&entry->list_kref, ttm_bo_release_list); | |
ba4e7d97 TH |
628 | return ret; |
629 | } | |
630 | ||
631 | static void ttm_bo_delayed_workqueue(struct work_struct *work) | |
632 | { | |
633 | struct ttm_bo_device *bdev = | |
634 | container_of(work, struct ttm_bo_device, wq.work); | |
635 | ||
636 | if (ttm_bo_delayed_delete(bdev, false)) { | |
637 | schedule_delayed_work(&bdev->wq, | |
638 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
639 | } | |
640 | } | |
641 | ||
642 | static void ttm_bo_release(struct kref *kref) | |
643 | { | |
644 | struct ttm_buffer_object *bo = | |
645 | container_of(kref, struct ttm_buffer_object, kref); | |
646 | struct ttm_bo_device *bdev = bo->bdev; | |
eba67093 | 647 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; |
ba4e7d97 | 648 | |
72525b3f | 649 | drm_vma_offset_remove(&bdev->vma_manager, &bo->vma_node); |
eba67093 TH |
650 | ttm_mem_io_lock(man, false); |
651 | ttm_mem_io_free_vm(bo); | |
652 | ttm_mem_io_unlock(man); | |
e1efc9b6 | 653 | ttm_bo_cleanup_refs_or_queue(bo); |
ba4e7d97 | 654 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
655 | } |
656 | ||
657 | void ttm_bo_unref(struct ttm_buffer_object **p_bo) | |
658 | { | |
659 | struct ttm_buffer_object *bo = *p_bo; | |
ba4e7d97 TH |
660 | |
661 | *p_bo = NULL; | |
ba4e7d97 | 662 | kref_put(&bo->kref, ttm_bo_release); |
ba4e7d97 TH |
663 | } |
664 | EXPORT_SYMBOL(ttm_bo_unref); | |
665 | ||
7c5ee536 MG |
666 | int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev) |
667 | { | |
668 | return cancel_delayed_work_sync(&bdev->wq); | |
669 | } | |
670 | EXPORT_SYMBOL(ttm_bo_lock_delayed_workqueue); | |
671 | ||
672 | void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched) | |
673 | { | |
674 | if (resched) | |
675 | schedule_delayed_work(&bdev->wq, | |
676 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
677 | } | |
678 | EXPORT_SYMBOL(ttm_bo_unlock_delayed_workqueue); | |
679 | ||
ca262a99 | 680 | static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible, |
97a875cb | 681 | bool no_wait_gpu) |
ba4e7d97 | 682 | { |
ba4e7d97 TH |
683 | struct ttm_bo_device *bdev = bo->bdev; |
684 | struct ttm_mem_reg evict_mem; | |
ca262a99 JG |
685 | struct ttm_placement placement; |
686 | int ret = 0; | |
ba4e7d97 | 687 | |
1717c0e2 | 688 | ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); |
ba4e7d97 | 689 | |
78ecf091 | 690 | if (unlikely(ret != 0)) { |
98ffc415 | 691 | if (ret != -ERESTARTSYS) { |
25d0479a | 692 | pr_err("Failed to expire sync object before buffer eviction\n"); |
78ecf091 | 693 | } |
ba4e7d97 TH |
694 | goto out; |
695 | } | |
696 | ||
009a9dad | 697 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
698 | |
699 | evict_mem = bo->mem; | |
700 | evict_mem.mm_node = NULL; | |
eba67093 TH |
701 | evict_mem.bus.io_reserved_vm = false; |
702 | evict_mem.bus.io_reserved_count = 0; | |
ba4e7d97 | 703 | |
7cb7d1d7 JG |
704 | placement.num_placement = 0; |
705 | placement.num_busy_placement = 0; | |
ca262a99 JG |
706 | bdev->driver->evict_flags(bo, &placement); |
707 | ret = ttm_bo_mem_space(bo, &placement, &evict_mem, interruptible, | |
97a875cb | 708 | no_wait_gpu); |
ba4e7d97 | 709 | if (ret) { |
fb53f862 | 710 | if (ret != -ERESTARTSYS) { |
25d0479a JP |
711 | pr_err("Failed to find memory space for buffer 0x%p eviction\n", |
712 | bo); | |
fb53f862 JG |
713 | ttm_bo_mem_space_debug(bo, &placement); |
714 | } | |
ba4e7d97 TH |
715 | goto out; |
716 | } | |
717 | ||
718 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, interruptible, | |
97a875cb | 719 | no_wait_gpu); |
ba4e7d97 | 720 | if (ret) { |
98ffc415 | 721 | if (ret != -ERESTARTSYS) |
25d0479a | 722 | pr_err("Buffer eviction failed\n"); |
42311ff9 | 723 | ttm_bo_mem_put(bo, &evict_mem); |
ba4e7d97 TH |
724 | goto out; |
725 | } | |
ca262a99 JG |
726 | bo->evicted = true; |
727 | out: | |
728 | return ret; | |
729 | } | |
730 | ||
731 | static int ttm_mem_evict_first(struct ttm_bo_device *bdev, | |
732 | uint32_t mem_type, | |
e300180f | 733 | const struct ttm_place *place, |
97a875cb | 734 | bool interruptible, |
9d87fa21 | 735 | bool no_wait_gpu) |
ca262a99 JG |
736 | { |
737 | struct ttm_bo_global *glob = bdev->glob; | |
738 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
739 | struct ttm_buffer_object *bo; | |
e7ab2019 | 740 | int ret = -EBUSY, put_count; |
ba4e7d97 | 741 | |
a987fcaa | 742 | spin_lock(&glob->lru_lock); |
e7ab2019 | 743 | list_for_each_entry(bo, &man->lru, lru) { |
0eff2a24 | 744 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
e300180f MD |
745 | if (!ret) { |
746 | if (place && (place->fpfn || place->lpfn)) { | |
747 | /* Don't evict this BO if it's outside of the | |
748 | * requested placement range | |
749 | */ | |
750 | if (place->fpfn >= (bo->mem.start + bo->mem.size) || | |
751 | (place->lpfn && place->lpfn <= bo->mem.start)) { | |
752 | __ttm_bo_unreserve(bo); | |
753 | ret = -EBUSY; | |
754 | continue; | |
755 | } | |
756 | } | |
757 | ||
e7ab2019 | 758 | break; |
e300180f | 759 | } |
e7ab2019 ML |
760 | } |
761 | ||
762 | if (ret) { | |
9c51ba1d | 763 | spin_unlock(&glob->lru_lock); |
e7ab2019 | 764 | return ret; |
9c51ba1d TH |
765 | } |
766 | ||
ca262a99 | 767 | kref_get(&bo->list_kref); |
9c51ba1d | 768 | |
e1efc9b6 | 769 | if (!list_empty(&bo->ddestroy)) { |
e7ab2019 ML |
770 | ret = ttm_bo_cleanup_refs_and_unlock(bo, interruptible, |
771 | no_wait_gpu); | |
e1efc9b6 | 772 | kref_put(&bo->list_kref, ttm_bo_release_list); |
b8e902f2 | 773 | return ret; |
e1efc9b6 TH |
774 | } |
775 | ||
9c51ba1d | 776 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 777 | spin_unlock(&glob->lru_lock); |
9c51ba1d TH |
778 | |
779 | BUG_ON(ret != 0); | |
780 | ||
d6ea8886 | 781 | ttm_bo_list_ref_sub(bo, put_count, true); |
9c51ba1d | 782 | |
97a875cb | 783 | ret = ttm_bo_evict(bo, interruptible, no_wait_gpu); |
ca262a99 | 784 | ttm_bo_unreserve(bo); |
9c51ba1d | 785 | |
ca262a99 | 786 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
787 | return ret; |
788 | } | |
789 | ||
42311ff9 BS |
790 | void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem) |
791 | { | |
d961db75 | 792 | struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type]; |
42311ff9 | 793 | |
d961db75 BS |
794 | if (mem->mm_node) |
795 | (*man->func->put_node)(man, mem); | |
42311ff9 BS |
796 | } |
797 | EXPORT_SYMBOL(ttm_bo_mem_put); | |
798 | ||
ba4e7d97 TH |
799 | /** |
800 | * Repeatedly evict memory from the LRU for @mem_type until we create enough | |
801 | * space, or we've evicted everything and there isn't enough space. | |
802 | */ | |
ca262a99 JG |
803 | static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, |
804 | uint32_t mem_type, | |
f1217ed0 | 805 | const struct ttm_place *place, |
ca262a99 | 806 | struct ttm_mem_reg *mem, |
9d87fa21 | 807 | bool interruptible, |
9d87fa21 | 808 | bool no_wait_gpu) |
ba4e7d97 | 809 | { |
ca262a99 | 810 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 | 811 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
ba4e7d97 TH |
812 | int ret; |
813 | ||
ba4e7d97 | 814 | do { |
f1217ed0 | 815 | ret = (*man->func->get_node)(man, bo, place, mem); |
ca262a99 JG |
816 | if (unlikely(ret != 0)) |
817 | return ret; | |
d961db75 | 818 | if (mem->mm_node) |
ba4e7d97 | 819 | break; |
e300180f | 820 | ret = ttm_mem_evict_first(bdev, mem_type, place, |
97a875cb | 821 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
822 | if (unlikely(ret != 0)) |
823 | return ret; | |
ba4e7d97 | 824 | } while (1); |
d961db75 | 825 | if (mem->mm_node == NULL) |
ba4e7d97 | 826 | return -ENOMEM; |
ba4e7d97 TH |
827 | mem->mem_type = mem_type; |
828 | return 0; | |
829 | } | |
830 | ||
ae3e8122 TH |
831 | static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man, |
832 | uint32_t cur_placement, | |
833 | uint32_t proposed_placement) | |
834 | { | |
835 | uint32_t caching = proposed_placement & TTM_PL_MASK_CACHING; | |
836 | uint32_t result = proposed_placement & ~TTM_PL_MASK_CACHING; | |
837 | ||
838 | /** | |
839 | * Keep current caching if possible. | |
840 | */ | |
841 | ||
842 | if ((cur_placement & caching) != 0) | |
843 | result |= (cur_placement & caching); | |
844 | else if ((man->default_caching & caching) != 0) | |
845 | result |= man->default_caching; | |
846 | else if ((TTM_PL_FLAG_CACHED & caching) != 0) | |
847 | result |= TTM_PL_FLAG_CACHED; | |
848 | else if ((TTM_PL_FLAG_WC & caching) != 0) | |
849 | result |= TTM_PL_FLAG_WC; | |
850 | else if ((TTM_PL_FLAG_UNCACHED & caching) != 0) | |
851 | result |= TTM_PL_FLAG_UNCACHED; | |
852 | ||
853 | return result; | |
854 | } | |
855 | ||
ba4e7d97 | 856 | static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man, |
ba4e7d97 | 857 | uint32_t mem_type, |
f1217ed0 | 858 | const struct ttm_place *place, |
ae3e8122 | 859 | uint32_t *masked_placement) |
ba4e7d97 TH |
860 | { |
861 | uint32_t cur_flags = ttm_bo_type_flags(mem_type); | |
862 | ||
f1217ed0 | 863 | if ((cur_flags & place->flags & TTM_PL_MASK_MEM) == 0) |
ba4e7d97 TH |
864 | return false; |
865 | ||
f1217ed0 | 866 | if ((place->flags & man->available_caching) == 0) |
ba4e7d97 | 867 | return false; |
ba4e7d97 | 868 | |
f1217ed0 | 869 | cur_flags |= (place->flags & man->available_caching); |
ae3e8122 TH |
870 | |
871 | *masked_placement = cur_flags; | |
ba4e7d97 TH |
872 | return true; |
873 | } | |
874 | ||
875 | /** | |
876 | * Creates space for memory region @mem according to its type. | |
877 | * | |
878 | * This function first searches for free space in compatible memory types in | |
879 | * the priority order defined by the driver. If free space isn't found, then | |
880 | * ttm_bo_mem_force_space is attempted in priority order to evict and find | |
881 | * space. | |
882 | */ | |
883 | int ttm_bo_mem_space(struct ttm_buffer_object *bo, | |
ca262a99 JG |
884 | struct ttm_placement *placement, |
885 | struct ttm_mem_reg *mem, | |
97a875cb | 886 | bool interruptible, |
9d87fa21 | 887 | bool no_wait_gpu) |
ba4e7d97 TH |
888 | { |
889 | struct ttm_bo_device *bdev = bo->bdev; | |
890 | struct ttm_mem_type_manager *man; | |
ba4e7d97 TH |
891 | uint32_t mem_type = TTM_PL_SYSTEM; |
892 | uint32_t cur_flags = 0; | |
893 | bool type_found = false; | |
894 | bool type_ok = false; | |
98ffc415 | 895 | bool has_erestartsys = false; |
ca262a99 | 896 | int i, ret; |
ba4e7d97 TH |
897 | |
898 | mem->mm_node = NULL; | |
b6637526 | 899 | for (i = 0; i < placement->num_placement; ++i) { |
f1217ed0 CK |
900 | const struct ttm_place *place = &placement->placement[i]; |
901 | ||
902 | ret = ttm_mem_type_from_place(place, &mem_type); | |
ca262a99 JG |
903 | if (ret) |
904 | return ret; | |
ba4e7d97 | 905 | man = &bdev->man[mem_type]; |
e30f3963 TH |
906 | if (!man->has_type || !man->use_type) |
907 | continue; | |
ba4e7d97 | 908 | |
f1217ed0 | 909 | type_ok = ttm_bo_mt_compatible(man, mem_type, place, |
ca262a99 | 910 | &cur_flags); |
ba4e7d97 TH |
911 | |
912 | if (!type_ok) | |
913 | continue; | |
914 | ||
e30f3963 | 915 | type_found = true; |
ae3e8122 TH |
916 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
917 | cur_flags); | |
ca262a99 JG |
918 | /* |
919 | * Use the access and other non-mapping-related flag bits from | |
920 | * the memory placement flags to the current flags | |
921 | */ | |
f1217ed0 | 922 | ttm_flag_masked(&cur_flags, place->flags, |
ca262a99 | 923 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 924 | |
ba4e7d97 TH |
925 | if (mem_type == TTM_PL_SYSTEM) |
926 | break; | |
927 | ||
e30f3963 TH |
928 | ret = (*man->func->get_node)(man, bo, place, mem); |
929 | if (unlikely(ret)) | |
930 | return ret; | |
931 | ||
d961db75 | 932 | if (mem->mm_node) |
ba4e7d97 TH |
933 | break; |
934 | } | |
935 | ||
d961db75 | 936 | if ((type_ok && (mem_type == TTM_PL_SYSTEM)) || mem->mm_node) { |
ba4e7d97 TH |
937 | mem->mem_type = mem_type; |
938 | mem->placement = cur_flags; | |
939 | return 0; | |
940 | } | |
941 | ||
b6637526 | 942 | for (i = 0; i < placement->num_busy_placement; ++i) { |
f1217ed0 CK |
943 | const struct ttm_place *place = &placement->busy_placement[i]; |
944 | ||
945 | ret = ttm_mem_type_from_place(place, &mem_type); | |
ca262a99 JG |
946 | if (ret) |
947 | return ret; | |
ba4e7d97 | 948 | man = &bdev->man[mem_type]; |
e30f3963 | 949 | if (!man->has_type || !man->use_type) |
ba4e7d97 | 950 | continue; |
f1217ed0 | 951 | if (!ttm_bo_mt_compatible(man, mem_type, place, &cur_flags)) |
ba4e7d97 TH |
952 | continue; |
953 | ||
e30f3963 | 954 | type_found = true; |
ae3e8122 TH |
955 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
956 | cur_flags); | |
ca262a99 JG |
957 | /* |
958 | * Use the access and other non-mapping-related flag bits from | |
959 | * the memory placement flags to the current flags | |
960 | */ | |
f1217ed0 | 961 | ttm_flag_masked(&cur_flags, place->flags, |
ca262a99 | 962 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 963 | |
0eaddb28 TH |
964 | if (mem_type == TTM_PL_SYSTEM) { |
965 | mem->mem_type = mem_type; | |
966 | mem->placement = cur_flags; | |
967 | mem->mm_node = NULL; | |
968 | return 0; | |
969 | } | |
970 | ||
f1217ed0 | 971 | ret = ttm_bo_mem_force_space(bo, mem_type, place, mem, |
97a875cb | 972 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
973 | if (ret == 0 && mem->mm_node) { |
974 | mem->placement = cur_flags; | |
975 | return 0; | |
976 | } | |
98ffc415 TH |
977 | if (ret == -ERESTARTSYS) |
978 | has_erestartsys = true; | |
ba4e7d97 | 979 | } |
e30f3963 TH |
980 | |
981 | if (!type_found) { | |
982 | printk(KERN_ERR TTM_PFX "No compatible memory type found.\n"); | |
983 | return -EINVAL; | |
984 | } | |
985 | ||
986 | return (has_erestartsys) ? -ERESTARTSYS : -ENOMEM; | |
ba4e7d97 TH |
987 | } |
988 | EXPORT_SYMBOL(ttm_bo_mem_space); | |
989 | ||
6e87fa48 | 990 | static int ttm_bo_move_buffer(struct ttm_buffer_object *bo, |
ca262a99 | 991 | struct ttm_placement *placement, |
97a875cb | 992 | bool interruptible, |
9d87fa21 | 993 | bool no_wait_gpu) |
ba4e7d97 | 994 | { |
ba4e7d97 TH |
995 | int ret = 0; |
996 | struct ttm_mem_reg mem; | |
997 | ||
009a9dad | 998 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
999 | |
1000 | /* | |
5ee7b41a CK |
1001 | * Don't wait for the BO on initial allocation. This is important when |
1002 | * the BO has an imported reservation object. | |
ba4e7d97 | 1003 | */ |
5ee7b41a CK |
1004 | if (bo->mem.mem_type != TTM_PL_SYSTEM || bo->ttm != NULL) { |
1005 | /* | |
1006 | * FIXME: It's possible to pipeline buffer moves. | |
1007 | * Have the driver move function wait for idle when necessary, | |
1008 | * instead of doing it here. | |
1009 | */ | |
1010 | ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); | |
1011 | if (ret) | |
1012 | return ret; | |
1013 | } | |
ba4e7d97 TH |
1014 | mem.num_pages = bo->num_pages; |
1015 | mem.size = mem.num_pages << PAGE_SHIFT; | |
1016 | mem.page_alignment = bo->mem.page_alignment; | |
eba67093 TH |
1017 | mem.bus.io_reserved_vm = false; |
1018 | mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
1019 | /* |
1020 | * Determine where to move the buffer. | |
1021 | */ | |
97a875cb ML |
1022 | ret = ttm_bo_mem_space(bo, placement, &mem, |
1023 | interruptible, no_wait_gpu); | |
ba4e7d97 TH |
1024 | if (ret) |
1025 | goto out_unlock; | |
97a875cb ML |
1026 | ret = ttm_bo_handle_move_mem(bo, &mem, false, |
1027 | interruptible, no_wait_gpu); | |
ba4e7d97 | 1028 | out_unlock: |
d961db75 BS |
1029 | if (ret && mem.mm_node) |
1030 | ttm_bo_mem_put(bo, &mem); | |
ba4e7d97 TH |
1031 | return ret; |
1032 | } | |
1033 | ||
59c8e663 TH |
1034 | static bool ttm_bo_mem_compat(struct ttm_placement *placement, |
1035 | struct ttm_mem_reg *mem, | |
1036 | uint32_t *new_flags) | |
ba4e7d97 | 1037 | { |
ca262a99 | 1038 | int i; |
e22238ea | 1039 | |
ca262a99 | 1040 | for (i = 0; i < placement->num_placement; i++) { |
f1217ed0 | 1041 | const struct ttm_place *heap = &placement->placement[i]; |
9ace2ef7 | 1042 | if (mem->mm_node && |
f1217ed0 | 1043 | (mem->start < heap->fpfn || |
9ace2ef7 | 1044 | (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) |
f1217ed0 CK |
1045 | continue; |
1046 | ||
1047 | *new_flags = heap->flags; | |
59c8e663 TH |
1048 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && |
1049 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1050 | return true; | |
1051 | } | |
1052 | ||
1053 | for (i = 0; i < placement->num_busy_placement; i++) { | |
f1217ed0 | 1054 | const struct ttm_place *heap = &placement->busy_placement[i]; |
9ace2ef7 | 1055 | if (mem->mm_node && |
f1217ed0 | 1056 | (mem->start < heap->fpfn || |
9ace2ef7 | 1057 | (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) |
f1217ed0 CK |
1058 | continue; |
1059 | ||
1060 | *new_flags = heap->flags; | |
59c8e663 TH |
1061 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && |
1062 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1063 | return true; | |
ca262a99 | 1064 | } |
59c8e663 TH |
1065 | |
1066 | return false; | |
ba4e7d97 TH |
1067 | } |
1068 | ||
09855acb JG |
1069 | int ttm_bo_validate(struct ttm_buffer_object *bo, |
1070 | struct ttm_placement *placement, | |
97a875cb | 1071 | bool interruptible, |
9d87fa21 | 1072 | bool no_wait_gpu) |
ba4e7d97 TH |
1073 | { |
1074 | int ret; | |
59c8e663 | 1075 | uint32_t new_flags; |
ba4e7d97 | 1076 | |
009a9dad | 1077 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
1078 | /* |
1079 | * Check whether we need to move buffer. | |
1080 | */ | |
59c8e663 | 1081 | if (!ttm_bo_mem_compat(placement, &bo->mem, &new_flags)) { |
97a875cb ML |
1082 | ret = ttm_bo_move_buffer(bo, placement, interruptible, |
1083 | no_wait_gpu); | |
ca262a99 | 1084 | if (ret) |
ba4e7d97 | 1085 | return ret; |
ca262a99 JG |
1086 | } else { |
1087 | /* | |
1088 | * Use the access and other non-mapping-related flag bits from | |
1089 | * the compatible memory placement flags to the active flags | |
1090 | */ | |
59c8e663 | 1091 | ttm_flag_masked(&bo->mem.placement, new_flags, |
ca262a99 | 1092 | ~TTM_PL_MASK_MEMTYPE); |
ba4e7d97 | 1093 | } |
ba4e7d97 TH |
1094 | /* |
1095 | * We might need to add a TTM. | |
1096 | */ | |
ba4e7d97 TH |
1097 | if (bo->mem.mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { |
1098 | ret = ttm_bo_add_ttm(bo, true); | |
1099 | if (ret) | |
1100 | return ret; | |
1101 | } | |
ba4e7d97 TH |
1102 | return 0; |
1103 | } | |
09855acb | 1104 | EXPORT_SYMBOL(ttm_bo_validate); |
ba4e7d97 | 1105 | |
09855acb JG |
1106 | int ttm_bo_init(struct ttm_bo_device *bdev, |
1107 | struct ttm_buffer_object *bo, | |
1108 | unsigned long size, | |
1109 | enum ttm_bo_type type, | |
1110 | struct ttm_placement *placement, | |
1111 | uint32_t page_alignment, | |
09855acb | 1112 | bool interruptible, |
5df23979 | 1113 | struct file *persistent_swap_storage, |
09855acb | 1114 | size_t acc_size, |
129b78bf | 1115 | struct sg_table *sg, |
f4f4e3e3 | 1116 | struct reservation_object *resv, |
09855acb | 1117 | void (*destroy) (struct ttm_buffer_object *)) |
ba4e7d97 | 1118 | { |
09855acb | 1119 | int ret = 0; |
ba4e7d97 | 1120 | unsigned long num_pages; |
57de4ba9 | 1121 | struct ttm_mem_global *mem_glob = bdev->glob->mem_glob; |
5e338405 | 1122 | bool locked; |
57de4ba9 JG |
1123 | |
1124 | ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false); | |
1125 | if (ret) { | |
25d0479a | 1126 | pr_err("Out of kernel memory\n"); |
57de4ba9 JG |
1127 | if (destroy) |
1128 | (*destroy)(bo); | |
1129 | else | |
1130 | kfree(bo); | |
1131 | return -ENOMEM; | |
1132 | } | |
ba4e7d97 | 1133 | |
ba4e7d97 TH |
1134 | num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; |
1135 | if (num_pages == 0) { | |
25d0479a | 1136 | pr_err("Illegal buffer object size\n"); |
7dfbbdcf TH |
1137 | if (destroy) |
1138 | (*destroy)(bo); | |
1139 | else | |
1140 | kfree(bo); | |
a393c730 | 1141 | ttm_mem_global_free(mem_glob, acc_size); |
ba4e7d97 TH |
1142 | return -EINVAL; |
1143 | } | |
1144 | bo->destroy = destroy; | |
1145 | ||
ba4e7d97 TH |
1146 | kref_init(&bo->kref); |
1147 | kref_init(&bo->list_kref); | |
1148 | atomic_set(&bo->cpu_writers, 0); | |
ba4e7d97 TH |
1149 | INIT_LIST_HEAD(&bo->lru); |
1150 | INIT_LIST_HEAD(&bo->ddestroy); | |
1151 | INIT_LIST_HEAD(&bo->swap); | |
eba67093 | 1152 | INIT_LIST_HEAD(&bo->io_reserve_lru); |
c58f009e | 1153 | mutex_init(&bo->wu_mutex); |
ba4e7d97 | 1154 | bo->bdev = bdev; |
a987fcaa | 1155 | bo->glob = bdev->glob; |
ba4e7d97 TH |
1156 | bo->type = type; |
1157 | bo->num_pages = num_pages; | |
eb6d2c39 | 1158 | bo->mem.size = num_pages << PAGE_SHIFT; |
ba4e7d97 TH |
1159 | bo->mem.mem_type = TTM_PL_SYSTEM; |
1160 | bo->mem.num_pages = bo->num_pages; | |
1161 | bo->mem.mm_node = NULL; | |
1162 | bo->mem.page_alignment = page_alignment; | |
eba67093 TH |
1163 | bo->mem.bus.io_reserved_vm = false; |
1164 | bo->mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
1165 | bo->priv_flags = 0; |
1166 | bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED); | |
5df23979 | 1167 | bo->persistent_swap_storage = persistent_swap_storage; |
ba4e7d97 | 1168 | bo->acc_size = acc_size; |
129b78bf | 1169 | bo->sg = sg; |
f4f4e3e3 ML |
1170 | if (resv) { |
1171 | bo->resv = resv; | |
1172 | lockdep_assert_held(&bo->resv->lock.base); | |
1173 | } else { | |
1174 | bo->resv = &bo->ttm_resv; | |
1175 | reservation_object_init(&bo->ttm_resv); | |
1176 | } | |
a987fcaa | 1177 | atomic_inc(&bo->glob->bo_count); |
72525b3f | 1178 | drm_vma_node_reset(&bo->vma_node); |
ba4e7d97 | 1179 | |
ba4e7d97 TH |
1180 | /* |
1181 | * For ttm_bo_type_device buffers, allocate | |
1182 | * address space from the device. | |
1183 | */ | |
f1217ed0 CK |
1184 | if (bo->type == ttm_bo_type_device || |
1185 | bo->type == ttm_bo_type_sg) | |
abf19035 DH |
1186 | ret = drm_vma_offset_add(&bdev->vma_manager, &bo->vma_node, |
1187 | bo->mem.num_pages); | |
ba4e7d97 | 1188 | |
f4f4e3e3 ML |
1189 | /* passed reservation objects should already be locked, |
1190 | * since otherwise lockdep will be angered in radeon. | |
1191 | */ | |
1192 | if (!resv) { | |
1193 | locked = ww_mutex_trylock(&bo->resv->lock); | |
1194 | WARN_ON(!locked); | |
1195 | } | |
ba4e7d97 | 1196 | |
5e338405 ML |
1197 | if (likely(!ret)) |
1198 | ret = ttm_bo_validate(bo, placement, interruptible, false); | |
ba4e7d97 | 1199 | |
33d48cf8 | 1200 | if (!resv) { |
f4f4e3e3 | 1201 | ttm_bo_unreserve(bo); |
5e338405 | 1202 | |
33d48cf8 CK |
1203 | } else if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { |
1204 | spin_lock(&bo->glob->lru_lock); | |
1205 | ttm_bo_add_to_lru(bo); | |
1206 | spin_unlock(&bo->glob->lru_lock); | |
1207 | } | |
1208 | ||
5e338405 ML |
1209 | if (unlikely(ret)) |
1210 | ttm_bo_unref(&bo); | |
ba4e7d97 TH |
1211 | |
1212 | return ret; | |
1213 | } | |
09855acb | 1214 | EXPORT_SYMBOL(ttm_bo_init); |
ba4e7d97 | 1215 | |
57de4ba9 JG |
1216 | size_t ttm_bo_acc_size(struct ttm_bo_device *bdev, |
1217 | unsigned long bo_size, | |
1218 | unsigned struct_size) | |
ba4e7d97 | 1219 | { |
57de4ba9 JG |
1220 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; |
1221 | size_t size = 0; | |
ba4e7d97 | 1222 | |
57de4ba9 | 1223 | size += ttm_round_pot(struct_size); |
85621630 | 1224 | size += ttm_round_pot(npages * sizeof(void *)); |
57de4ba9 JG |
1225 | size += ttm_round_pot(sizeof(struct ttm_tt)); |
1226 | return size; | |
ba4e7d97 | 1227 | } |
57de4ba9 JG |
1228 | EXPORT_SYMBOL(ttm_bo_acc_size); |
1229 | ||
1230 | size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev, | |
1231 | unsigned long bo_size, | |
1232 | unsigned struct_size) | |
1233 | { | |
1234 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; | |
1235 | size_t size = 0; | |
1236 | ||
1237 | size += ttm_round_pot(struct_size); | |
85621630 | 1238 | size += ttm_round_pot(npages * (2*sizeof(void *) + sizeof(dma_addr_t))); |
57de4ba9 JG |
1239 | size += ttm_round_pot(sizeof(struct ttm_dma_tt)); |
1240 | return size; | |
1241 | } | |
1242 | EXPORT_SYMBOL(ttm_bo_dma_acc_size); | |
ba4e7d97 | 1243 | |
09855acb JG |
1244 | int ttm_bo_create(struct ttm_bo_device *bdev, |
1245 | unsigned long size, | |
1246 | enum ttm_bo_type type, | |
1247 | struct ttm_placement *placement, | |
1248 | uint32_t page_alignment, | |
09855acb | 1249 | bool interruptible, |
5df23979 | 1250 | struct file *persistent_swap_storage, |
09855acb | 1251 | struct ttm_buffer_object **p_bo) |
ba4e7d97 TH |
1252 | { |
1253 | struct ttm_buffer_object *bo; | |
57de4ba9 | 1254 | size_t acc_size; |
ca262a99 | 1255 | int ret; |
ba4e7d97 | 1256 | |
ba4e7d97 | 1257 | bo = kzalloc(sizeof(*bo), GFP_KERNEL); |
a393c730 | 1258 | if (unlikely(bo == NULL)) |
ba4e7d97 | 1259 | return -ENOMEM; |
ba4e7d97 | 1260 | |
a393c730 | 1261 | acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct ttm_buffer_object)); |
09855acb | 1262 | ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment, |
0b91c4a1 | 1263 | interruptible, persistent_swap_storage, acc_size, |
f4f4e3e3 | 1264 | NULL, NULL, NULL); |
ba4e7d97 TH |
1265 | if (likely(ret == 0)) |
1266 | *p_bo = bo; | |
1267 | ||
1268 | return ret; | |
1269 | } | |
4d798937 | 1270 | EXPORT_SYMBOL(ttm_bo_create); |
ba4e7d97 | 1271 | |
ba4e7d97 | 1272 | static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, |
ca262a99 | 1273 | unsigned mem_type, bool allow_errors) |
ba4e7d97 | 1274 | { |
ca262a99 | 1275 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
a987fcaa | 1276 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 | 1277 | int ret; |
ba4e7d97 TH |
1278 | |
1279 | /* | |
1280 | * Can't use standard list traversal since we're unlocking. | |
1281 | */ | |
1282 | ||
a987fcaa | 1283 | spin_lock(&glob->lru_lock); |
ca262a99 | 1284 | while (!list_empty(&man->lru)) { |
a987fcaa | 1285 | spin_unlock(&glob->lru_lock); |
e300180f | 1286 | ret = ttm_mem_evict_first(bdev, mem_type, NULL, false, false); |
ca262a99 JG |
1287 | if (ret) { |
1288 | if (allow_errors) { | |
1289 | return ret; | |
1290 | } else { | |
25d0479a | 1291 | pr_err("Cleanup eviction failed\n"); |
ca262a99 JG |
1292 | } |
1293 | } | |
a987fcaa | 1294 | spin_lock(&glob->lru_lock); |
ba4e7d97 | 1295 | } |
a987fcaa | 1296 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
1297 | return 0; |
1298 | } | |
1299 | ||
1300 | int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1301 | { | |
c96e7c7a | 1302 | struct ttm_mem_type_manager *man; |
ba4e7d97 TH |
1303 | int ret = -EINVAL; |
1304 | ||
1305 | if (mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1306 | pr_err("Illegal memory type %d\n", mem_type); |
ba4e7d97 TH |
1307 | return ret; |
1308 | } | |
c96e7c7a | 1309 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
1310 | |
1311 | if (!man->has_type) { | |
25d0479a JP |
1312 | pr_err("Trying to take down uninitialized memory manager type %u\n", |
1313 | mem_type); | |
ba4e7d97 TH |
1314 | return ret; |
1315 | } | |
1316 | ||
1317 | man->use_type = false; | |
1318 | man->has_type = false; | |
1319 | ||
1320 | ret = 0; | |
1321 | if (mem_type > 0) { | |
ca262a99 | 1322 | ttm_bo_force_list_clean(bdev, mem_type, false); |
ba4e7d97 | 1323 | |
d961db75 | 1324 | ret = (*man->func->takedown)(man); |
ba4e7d97 TH |
1325 | } |
1326 | ||
1327 | return ret; | |
1328 | } | |
1329 | EXPORT_SYMBOL(ttm_bo_clean_mm); | |
1330 | ||
1331 | int ttm_bo_evict_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1332 | { | |
1333 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
1334 | ||
1335 | if (mem_type == 0 || mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1336 | pr_err("Illegal memory manager memory type %u\n", mem_type); |
ba4e7d97 TH |
1337 | return -EINVAL; |
1338 | } | |
1339 | ||
1340 | if (!man->has_type) { | |
25d0479a | 1341 | pr_err("Memory type %u has not been initialized\n", mem_type); |
ba4e7d97 TH |
1342 | return 0; |
1343 | } | |
1344 | ||
ca262a99 | 1345 | return ttm_bo_force_list_clean(bdev, mem_type, true); |
ba4e7d97 TH |
1346 | } |
1347 | EXPORT_SYMBOL(ttm_bo_evict_mm); | |
1348 | ||
1349 | int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type, | |
ca262a99 | 1350 | unsigned long p_size) |
ba4e7d97 TH |
1351 | { |
1352 | int ret = -EINVAL; | |
1353 | struct ttm_mem_type_manager *man; | |
1354 | ||
dbc4a5b8 | 1355 | BUG_ON(type >= TTM_NUM_MEM_TYPES); |
ba4e7d97 | 1356 | man = &bdev->man[type]; |
dbc4a5b8 | 1357 | BUG_ON(man->has_type); |
eba67093 TH |
1358 | man->io_reserve_fastpath = true; |
1359 | man->use_io_reserve_lru = false; | |
1360 | mutex_init(&man->io_reserve_mutex); | |
1361 | INIT_LIST_HEAD(&man->io_reserve_lru); | |
ba4e7d97 TH |
1362 | |
1363 | ret = bdev->driver->init_mem_type(bdev, type, man); | |
1364 | if (ret) | |
1365 | return ret; | |
d961db75 | 1366 | man->bdev = bdev; |
ba4e7d97 TH |
1367 | |
1368 | ret = 0; | |
1369 | if (type != TTM_PL_SYSTEM) { | |
d961db75 | 1370 | ret = (*man->func->init)(man, p_size); |
ba4e7d97 TH |
1371 | if (ret) |
1372 | return ret; | |
1373 | } | |
1374 | man->has_type = true; | |
1375 | man->use_type = true; | |
1376 | man->size = p_size; | |
1377 | ||
1378 | INIT_LIST_HEAD(&man->lru); | |
1379 | ||
1380 | return 0; | |
1381 | } | |
1382 | EXPORT_SYMBOL(ttm_bo_init_mm); | |
1383 | ||
a987fcaa TH |
1384 | static void ttm_bo_global_kobj_release(struct kobject *kobj) |
1385 | { | |
1386 | struct ttm_bo_global *glob = | |
1387 | container_of(kobj, struct ttm_bo_global, kobj); | |
1388 | ||
a987fcaa TH |
1389 | ttm_mem_unregister_shrink(glob->mem_glob, &glob->shrink); |
1390 | __free_page(glob->dummy_read_page); | |
1391 | kfree(glob); | |
1392 | } | |
1393 | ||
ba4420c2 | 1394 | void ttm_bo_global_release(struct drm_global_reference *ref) |
a987fcaa TH |
1395 | { |
1396 | struct ttm_bo_global *glob = ref->object; | |
1397 | ||
1398 | kobject_del(&glob->kobj); | |
1399 | kobject_put(&glob->kobj); | |
1400 | } | |
1401 | EXPORT_SYMBOL(ttm_bo_global_release); | |
1402 | ||
ba4420c2 | 1403 | int ttm_bo_global_init(struct drm_global_reference *ref) |
a987fcaa TH |
1404 | { |
1405 | struct ttm_bo_global_ref *bo_ref = | |
1406 | container_of(ref, struct ttm_bo_global_ref, ref); | |
1407 | struct ttm_bo_global *glob = ref->object; | |
1408 | int ret; | |
1409 | ||
1410 | mutex_init(&glob->device_list_mutex); | |
1411 | spin_lock_init(&glob->lru_lock); | |
1412 | glob->mem_glob = bo_ref->mem_glob; | |
1413 | glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); | |
1414 | ||
1415 | if (unlikely(glob->dummy_read_page == NULL)) { | |
1416 | ret = -ENOMEM; | |
1417 | goto out_no_drp; | |
1418 | } | |
1419 | ||
1420 | INIT_LIST_HEAD(&glob->swap_lru); | |
1421 | INIT_LIST_HEAD(&glob->device_list); | |
1422 | ||
1423 | ttm_mem_init_shrink(&glob->shrink, ttm_bo_swapout); | |
1424 | ret = ttm_mem_register_shrink(glob->mem_glob, &glob->shrink); | |
1425 | if (unlikely(ret != 0)) { | |
25d0479a | 1426 | pr_err("Could not register buffer object swapout\n"); |
a987fcaa TH |
1427 | goto out_no_shrink; |
1428 | } | |
1429 | ||
a987fcaa TH |
1430 | atomic_set(&glob->bo_count, 0); |
1431 | ||
b642ed06 RD |
1432 | ret = kobject_init_and_add( |
1433 | &glob->kobj, &ttm_bo_glob_kobj_type, ttm_get_kobj(), "buffer_objects"); | |
a987fcaa TH |
1434 | if (unlikely(ret != 0)) |
1435 | kobject_put(&glob->kobj); | |
1436 | return ret; | |
1437 | out_no_shrink: | |
1438 | __free_page(glob->dummy_read_page); | |
1439 | out_no_drp: | |
1440 | kfree(glob); | |
1441 | return ret; | |
1442 | } | |
1443 | EXPORT_SYMBOL(ttm_bo_global_init); | |
1444 | ||
1445 | ||
ba4e7d97 TH |
1446 | int ttm_bo_device_release(struct ttm_bo_device *bdev) |
1447 | { | |
1448 | int ret = 0; | |
1449 | unsigned i = TTM_NUM_MEM_TYPES; | |
1450 | struct ttm_mem_type_manager *man; | |
a987fcaa | 1451 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 TH |
1452 | |
1453 | while (i--) { | |
1454 | man = &bdev->man[i]; | |
1455 | if (man->has_type) { | |
1456 | man->use_type = false; | |
1457 | if ((i != TTM_PL_SYSTEM) && ttm_bo_clean_mm(bdev, i)) { | |
1458 | ret = -EBUSY; | |
25d0479a JP |
1459 | pr_err("DRM memory manager type %d is not clean\n", |
1460 | i); | |
ba4e7d97 TH |
1461 | } |
1462 | man->has_type = false; | |
1463 | } | |
1464 | } | |
1465 | ||
a987fcaa TH |
1466 | mutex_lock(&glob->device_list_mutex); |
1467 | list_del(&bdev->device_list); | |
1468 | mutex_unlock(&glob->device_list_mutex); | |
1469 | ||
f094cfc6 | 1470 | cancel_delayed_work_sync(&bdev->wq); |
ba4e7d97 TH |
1471 | |
1472 | while (ttm_bo_delayed_delete(bdev, true)) | |
1473 | ; | |
1474 | ||
a987fcaa | 1475 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
1476 | if (list_empty(&bdev->ddestroy)) |
1477 | TTM_DEBUG("Delayed destroy list was clean\n"); | |
1478 | ||
1479 | if (list_empty(&bdev->man[0].lru)) | |
1480 | TTM_DEBUG("Swap list was clean\n"); | |
a987fcaa | 1481 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1482 | |
72525b3f | 1483 | drm_vma_offset_manager_destroy(&bdev->vma_manager); |
ba4e7d97 | 1484 | |
ba4e7d97 TH |
1485 | return ret; |
1486 | } | |
1487 | EXPORT_SYMBOL(ttm_bo_device_release); | |
1488 | ||
ba4e7d97 | 1489 | int ttm_bo_device_init(struct ttm_bo_device *bdev, |
a987fcaa TH |
1490 | struct ttm_bo_global *glob, |
1491 | struct ttm_bo_driver *driver, | |
44d847b7 | 1492 | struct address_space *mapping, |
51c8b407 | 1493 | uint64_t file_page_offset, |
ad49f501 | 1494 | bool need_dma32) |
ba4e7d97 TH |
1495 | { |
1496 | int ret = -EINVAL; | |
1497 | ||
ba4e7d97 | 1498 | bdev->driver = driver; |
ba4e7d97 TH |
1499 | |
1500 | memset(bdev->man, 0, sizeof(bdev->man)); | |
1501 | ||
ba4e7d97 TH |
1502 | /* |
1503 | * Initialize the system memory buffer type. | |
1504 | * Other types need to be driver / IOCTL initialized. | |
1505 | */ | |
ca262a99 | 1506 | ret = ttm_bo_init_mm(bdev, TTM_PL_SYSTEM, 0); |
ba4e7d97 | 1507 | if (unlikely(ret != 0)) |
a987fcaa | 1508 | goto out_no_sys; |
ba4e7d97 | 1509 | |
72525b3f DH |
1510 | drm_vma_offset_manager_init(&bdev->vma_manager, file_page_offset, |
1511 | 0x10000000); | |
ba4e7d97 | 1512 | INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue); |
ba4e7d97 | 1513 | INIT_LIST_HEAD(&bdev->ddestroy); |
44d847b7 | 1514 | bdev->dev_mapping = mapping; |
a987fcaa | 1515 | bdev->glob = glob; |
ad49f501 | 1516 | bdev->need_dma32 = need_dma32; |
65705962 | 1517 | bdev->val_seq = 0; |
a987fcaa TH |
1518 | mutex_lock(&glob->device_list_mutex); |
1519 | list_add_tail(&bdev->device_list, &glob->device_list); | |
1520 | mutex_unlock(&glob->device_list_mutex); | |
ba4e7d97 TH |
1521 | |
1522 | return 0; | |
a987fcaa | 1523 | out_no_sys: |
ba4e7d97 TH |
1524 | return ret; |
1525 | } | |
1526 | EXPORT_SYMBOL(ttm_bo_device_init); | |
1527 | ||
1528 | /* | |
1529 | * buffer object vm functions. | |
1530 | */ | |
1531 | ||
1532 | bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
1533 | { | |
1534 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
1535 | ||
1536 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) { | |
1537 | if (mem->mem_type == TTM_PL_SYSTEM) | |
1538 | return false; | |
1539 | ||
1540 | if (man->flags & TTM_MEMTYPE_FLAG_CMA) | |
1541 | return false; | |
1542 | ||
1543 | if (mem->placement & TTM_PL_FLAG_CACHED) | |
1544 | return false; | |
1545 | } | |
1546 | return true; | |
1547 | } | |
1548 | ||
eba67093 | 1549 | void ttm_bo_unmap_virtual_locked(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
1550 | { |
1551 | struct ttm_bo_device *bdev = bo->bdev; | |
ba4e7d97 | 1552 | |
51335df9 | 1553 | drm_vma_node_unmap(&bo->vma_node, bdev->dev_mapping); |
eba67093 | 1554 | ttm_mem_io_free_vm(bo); |
ba4e7d97 | 1555 | } |
eba67093 TH |
1556 | |
1557 | void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo) | |
1558 | { | |
1559 | struct ttm_bo_device *bdev = bo->bdev; | |
1560 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; | |
1561 | ||
1562 | ttm_mem_io_lock(man, false); | |
1563 | ttm_bo_unmap_virtual_locked(bo); | |
1564 | ttm_mem_io_unlock(man); | |
ba4e7d97 | 1565 | } |
eba67093 TH |
1566 | |
1567 | ||
e024e110 | 1568 | EXPORT_SYMBOL(ttm_bo_unmap_virtual); |
ba4e7d97 | 1569 | |
ba4e7d97 | 1570 | int ttm_bo_wait(struct ttm_buffer_object *bo, |
1717c0e2 | 1571 | bool lazy, bool interruptible, bool no_wait) |
ba4e7d97 | 1572 | { |
f2c24b83 ML |
1573 | struct reservation_object_list *fobj; |
1574 | struct reservation_object *resv; | |
1575 | struct fence *excl; | |
1576 | long timeout = 15 * HZ; | |
1577 | int i; | |
7040138f | 1578 | |
f2c24b83 ML |
1579 | resv = bo->resv; |
1580 | fobj = reservation_object_get_list(resv); | |
1581 | excl = reservation_object_get_excl(resv); | |
1582 | if (excl) { | |
1583 | if (!fence_is_signaled(excl)) { | |
1584 | if (no_wait) | |
1585 | return -EBUSY; | |
ba4e7d97 | 1586 | |
f2c24b83 ML |
1587 | timeout = fence_wait_timeout(excl, |
1588 | interruptible, timeout); | |
ba4e7d97 | 1589 | } |
f2c24b83 | 1590 | } |
ba4e7d97 | 1591 | |
f2c24b83 ML |
1592 | for (i = 0; fobj && timeout > 0 && i < fobj->shared_count; ++i) { |
1593 | struct fence *fence; | |
1594 | fence = rcu_dereference_protected(fobj->shared[i], | |
1595 | reservation_object_held(resv)); | |
ba4e7d97 | 1596 | |
f2c24b83 ML |
1597 | if (!fence_is_signaled(fence)) { |
1598 | if (no_wait) | |
1599 | return -EBUSY; | |
dd7cfd64 | 1600 | |
f2c24b83 ML |
1601 | timeout = fence_wait_timeout(fence, |
1602 | interruptible, timeout); | |
ba4e7d97 TH |
1603 | } |
1604 | } | |
f2c24b83 ML |
1605 | |
1606 | if (timeout < 0) | |
1607 | return timeout; | |
1608 | ||
1609 | if (timeout == 0) | |
1610 | return -EBUSY; | |
1611 | ||
1612 | reservation_object_add_excl_fence(resv, NULL); | |
1613 | clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); | |
1614 | return 0; | |
ba4e7d97 TH |
1615 | } |
1616 | EXPORT_SYMBOL(ttm_bo_wait); | |
1617 | ||
ba4e7d97 TH |
1618 | int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) |
1619 | { | |
1620 | int ret = 0; | |
1621 | ||
1622 | /* | |
8cfe92d6 | 1623 | * Using ttm_bo_reserve makes sure the lru lists are updated. |
ba4e7d97 TH |
1624 | */ |
1625 | ||
0eff2a24 | 1626 | ret = ttm_bo_reserve(bo, true, no_wait, false, NULL); |
ba4e7d97 TH |
1627 | if (unlikely(ret != 0)) |
1628 | return ret; | |
1717c0e2 | 1629 | ret = ttm_bo_wait(bo, false, true, no_wait); |
ba4e7d97 TH |
1630 | if (likely(ret == 0)) |
1631 | atomic_inc(&bo->cpu_writers); | |
1632 | ttm_bo_unreserve(bo); | |
1633 | return ret; | |
1634 | } | |
d1ede145 | 1635 | EXPORT_SYMBOL(ttm_bo_synccpu_write_grab); |
ba4e7d97 TH |
1636 | |
1637 | void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo) | |
1638 | { | |
654aa792 | 1639 | atomic_dec(&bo->cpu_writers); |
ba4e7d97 | 1640 | } |
d1ede145 | 1641 | EXPORT_SYMBOL(ttm_bo_synccpu_write_release); |
ba4e7d97 TH |
1642 | |
1643 | /** | |
1644 | * A buffer object shrink method that tries to swap out the first | |
1645 | * buffer object on the bo_global::swap_lru list. | |
1646 | */ | |
1647 | ||
1648 | static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) | |
1649 | { | |
a987fcaa TH |
1650 | struct ttm_bo_global *glob = |
1651 | container_of(shrink, struct ttm_bo_global, shrink); | |
ba4e7d97 TH |
1652 | struct ttm_buffer_object *bo; |
1653 | int ret = -EBUSY; | |
1654 | int put_count; | |
1655 | uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); | |
1656 | ||
a987fcaa | 1657 | spin_lock(&glob->lru_lock); |
2b7b3ad2 | 1658 | list_for_each_entry(bo, &glob->swap_lru, swap) { |
0eff2a24 | 1659 | ret = __ttm_bo_reserve(bo, false, true, false, NULL); |
2b7b3ad2 ML |
1660 | if (!ret) |
1661 | break; | |
1662 | } | |
85b144f8 | 1663 | |
2b7b3ad2 ML |
1664 | if (ret) { |
1665 | spin_unlock(&glob->lru_lock); | |
1666 | return ret; | |
1667 | } | |
e1efc9b6 | 1668 | |
2b7b3ad2 | 1669 | kref_get(&bo->list_kref); |
ba4e7d97 | 1670 | |
2b7b3ad2 ML |
1671 | if (!list_empty(&bo->ddestroy)) { |
1672 | ret = ttm_bo_cleanup_refs_and_unlock(bo, false, false); | |
1673 | kref_put(&bo->list_kref, ttm_bo_release_list); | |
1674 | return ret; | |
ba4e7d97 TH |
1675 | } |
1676 | ||
ba4e7d97 | 1677 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 1678 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1679 | |
d6ea8886 | 1680 | ttm_bo_list_ref_sub(bo, put_count, true); |
ba4e7d97 TH |
1681 | |
1682 | /** | |
1683 | * Wait for GPU, then move to system cached. | |
1684 | */ | |
1685 | ||
1717c0e2 | 1686 | ret = ttm_bo_wait(bo, false, false, false); |
ba4e7d97 TH |
1687 | |
1688 | if (unlikely(ret != 0)) | |
1689 | goto out; | |
1690 | ||
1691 | if ((bo->mem.placement & swap_placement) != swap_placement) { | |
1692 | struct ttm_mem_reg evict_mem; | |
1693 | ||
1694 | evict_mem = bo->mem; | |
1695 | evict_mem.mm_node = NULL; | |
1696 | evict_mem.placement = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED; | |
1697 | evict_mem.mem_type = TTM_PL_SYSTEM; | |
1698 | ||
1699 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, | |
97a875cb | 1700 | false, false); |
ba4e7d97 TH |
1701 | if (unlikely(ret != 0)) |
1702 | goto out; | |
1703 | } | |
1704 | ||
1705 | ttm_bo_unmap_virtual(bo); | |
1706 | ||
1707 | /** | |
1708 | * Swap out. Buffer will be swapped in again as soon as | |
1709 | * anyone tries to access a ttm page. | |
1710 | */ | |
1711 | ||
3f09ea4e TH |
1712 | if (bo->bdev->driver->swap_notify) |
1713 | bo->bdev->driver->swap_notify(bo); | |
1714 | ||
5df23979 | 1715 | ret = ttm_tt_swapout(bo->ttm, bo->persistent_swap_storage); |
ba4e7d97 TH |
1716 | out: |
1717 | ||
1718 | /** | |
1719 | * | |
1720 | * Unreserve without putting on LRU to avoid swapping out an | |
1721 | * already swapped buffer. | |
1722 | */ | |
1723 | ||
c7523083 | 1724 | __ttm_bo_unreserve(bo); |
ba4e7d97 TH |
1725 | kref_put(&bo->list_kref, ttm_bo_release_list); |
1726 | return ret; | |
1727 | } | |
1728 | ||
1729 | void ttm_bo_swapout_all(struct ttm_bo_device *bdev) | |
1730 | { | |
a987fcaa | 1731 | while (ttm_bo_swapout(&bdev->glob->shrink) == 0) |
ba4e7d97 TH |
1732 | ; |
1733 | } | |
e99e1e78 | 1734 | EXPORT_SYMBOL(ttm_bo_swapout_all); |
c58f009e TH |
1735 | |
1736 | /** | |
1737 | * ttm_bo_wait_unreserved - interruptible wait for a buffer object to become | |
1738 | * unreserved | |
1739 | * | |
1740 | * @bo: Pointer to buffer | |
1741 | */ | |
1742 | int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo) | |
1743 | { | |
1744 | int ret; | |
1745 | ||
1746 | /* | |
1747 | * In the absense of a wait_unlocked API, | |
1748 | * Use the bo::wu_mutex to avoid triggering livelocks due to | |
1749 | * concurrent use of this function. Note that this use of | |
1750 | * bo::wu_mutex can go away if we change locking order to | |
1751 | * mmap_sem -> bo::reserve. | |
1752 | */ | |
1753 | ret = mutex_lock_interruptible(&bo->wu_mutex); | |
1754 | if (unlikely(ret != 0)) | |
1755 | return -ERESTARTSYS; | |
1756 | if (!ww_mutex_is_locked(&bo->resv->lock)) | |
1757 | goto out_unlock; | |
c7523083 | 1758 | ret = __ttm_bo_reserve(bo, true, false, false, NULL); |
c58f009e TH |
1759 | if (unlikely(ret != 0)) |
1760 | goto out_unlock; | |
c7523083 | 1761 | __ttm_bo_unreserve(bo); |
c58f009e TH |
1762 | |
1763 | out_unlock: | |
1764 | mutex_unlock(&bo->wu_mutex); | |
1765 | return ret; | |
1766 | } |