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ba4e7d97 TH |
1 | /************************************************************************** |
2 | * | |
3 | * Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA | |
4 | * All Rights Reserved. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation the rights to use, copy, modify, merge, publish, | |
10 | * distribute, sub license, and/or sell copies of the Software, and to | |
11 | * permit persons to whom the Software is furnished to do so, subject to | |
12 | * the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | **************************************************************************/ | |
27 | /* | |
28 | * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com> | |
29 | */ | |
30 | ||
25d0479a JP |
31 | #define pr_fmt(fmt) "[TTM] " fmt |
32 | ||
760285e7 DH |
33 | #include <drm/ttm/ttm_module.h> |
34 | #include <drm/ttm/ttm_bo_driver.h> | |
35 | #include <drm/ttm/ttm_placement.h> | |
ba4e7d97 TH |
36 | #include <linux/jiffies.h> |
37 | #include <linux/slab.h> | |
38 | #include <linux/sched.h> | |
39 | #include <linux/mm.h> | |
40 | #include <linux/file.h> | |
41 | #include <linux/module.h> | |
60063497 | 42 | #include <linux/atomic.h> |
ba4e7d97 TH |
43 | |
44 | #define TTM_ASSERT_LOCKED(param) | |
45 | #define TTM_DEBUG(fmt, arg...) | |
46 | #define TTM_BO_HASH_ORDER 13 | |
47 | ||
48 | static int ttm_bo_setup_vm(struct ttm_buffer_object *bo); | |
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 | ||
fb53f862 JG |
57 | static inline int ttm_mem_type_from_flags(uint32_t flags, uint32_t *mem_type) |
58 | { | |
59 | int i; | |
60 | ||
61 | for (i = 0; i <= TTM_PL_PRIV5; i++) | |
62 | if (flags & (1 << i)) { | |
63 | *mem_type = i; | |
64 | return 0; | |
65 | } | |
66 | return -EINVAL; | |
67 | } | |
68 | ||
5012f506 | 69 | static void ttm_mem_type_debug(struct ttm_bo_device *bdev, int mem_type) |
fb53f862 | 70 | { |
5012f506 JG |
71 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
72 | ||
25d0479a JP |
73 | pr_err(" has_type: %d\n", man->has_type); |
74 | pr_err(" use_type: %d\n", man->use_type); | |
75 | pr_err(" flags: 0x%08X\n", man->flags); | |
76 | pr_err(" gpu_offset: 0x%08lX\n", man->gpu_offset); | |
77 | pr_err(" size: %llu\n", man->size); | |
78 | pr_err(" available_caching: 0x%08X\n", man->available_caching); | |
79 | pr_err(" default_caching: 0x%08X\n", man->default_caching); | |
d961db75 BS |
80 | if (mem_type != TTM_PL_SYSTEM) |
81 | (*man->func->debug)(man, TTM_PFX); | |
fb53f862 JG |
82 | } |
83 | ||
84 | static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo, | |
85 | struct ttm_placement *placement) | |
86 | { | |
fb53f862 JG |
87 | int i, ret, mem_type; |
88 | ||
25d0479a JP |
89 | pr_err("No space for %p (%lu pages, %luK, %luM)\n", |
90 | bo, bo->mem.num_pages, bo->mem.size >> 10, | |
91 | bo->mem.size >> 20); | |
fb53f862 JG |
92 | for (i = 0; i < placement->num_placement; i++) { |
93 | ret = ttm_mem_type_from_flags(placement->placement[i], | |
94 | &mem_type); | |
95 | if (ret) | |
96 | return; | |
25d0479a JP |
97 | pr_err(" placement[%d]=0x%08X (%d)\n", |
98 | i, placement->placement[i], mem_type); | |
5012f506 | 99 | ttm_mem_type_debug(bo->bdev, mem_type); |
fb53f862 JG |
100 | } |
101 | } | |
102 | ||
a987fcaa TH |
103 | static ssize_t ttm_bo_global_show(struct kobject *kobj, |
104 | struct attribute *attr, | |
105 | char *buffer) | |
106 | { | |
107 | struct ttm_bo_global *glob = | |
108 | container_of(kobj, struct ttm_bo_global, kobj); | |
109 | ||
110 | return snprintf(buffer, PAGE_SIZE, "%lu\n", | |
111 | (unsigned long) atomic_read(&glob->bo_count)); | |
112 | } | |
113 | ||
114 | static struct attribute *ttm_bo_global_attrs[] = { | |
115 | &ttm_bo_count, | |
116 | NULL | |
117 | }; | |
118 | ||
52cf25d0 | 119 | static const struct sysfs_ops ttm_bo_global_ops = { |
a987fcaa TH |
120 | .show = &ttm_bo_global_show |
121 | }; | |
122 | ||
123 | static struct kobj_type ttm_bo_glob_kobj_type = { | |
124 | .release = &ttm_bo_global_kobj_release, | |
125 | .sysfs_ops = &ttm_bo_global_ops, | |
126 | .default_attrs = ttm_bo_global_attrs | |
127 | }; | |
128 | ||
ba4e7d97 TH |
129 | |
130 | static inline uint32_t ttm_bo_type_flags(unsigned type) | |
131 | { | |
132 | return 1 << (type); | |
133 | } | |
134 | ||
135 | static void ttm_bo_release_list(struct kref *list_kref) | |
136 | { | |
137 | struct ttm_buffer_object *bo = | |
138 | container_of(list_kref, struct ttm_buffer_object, list_kref); | |
139 | struct ttm_bo_device *bdev = bo->bdev; | |
57de4ba9 | 140 | size_t acc_size = bo->acc_size; |
ba4e7d97 TH |
141 | |
142 | BUG_ON(atomic_read(&bo->list_kref.refcount)); | |
143 | BUG_ON(atomic_read(&bo->kref.refcount)); | |
144 | BUG_ON(atomic_read(&bo->cpu_writers)); | |
145 | BUG_ON(bo->sync_obj != NULL); | |
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); | |
155 | ||
ba4e7d97 TH |
156 | if (bo->destroy) |
157 | bo->destroy(bo); | |
158 | else { | |
ba4e7d97 TH |
159 | kfree(bo); |
160 | } | |
57de4ba9 | 161 | ttm_mem_global_free(bdev->glob->mem_glob, acc_size); |
ba4e7d97 TH |
162 | } |
163 | ||
d6ea8886 | 164 | void ttm_bo_add_to_lru(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
165 | { |
166 | struct ttm_bo_device *bdev = bo->bdev; | |
167 | struct ttm_mem_type_manager *man; | |
168 | ||
009a9dad | 169 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
170 | |
171 | if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { | |
172 | ||
173 | BUG_ON(!list_empty(&bo->lru)); | |
174 | ||
175 | man = &bdev->man[bo->mem.mem_type]; | |
176 | list_add_tail(&bo->lru, &man->lru); | |
177 | kref_get(&bo->list_kref); | |
178 | ||
179 | if (bo->ttm != NULL) { | |
a987fcaa | 180 | list_add_tail(&bo->swap, &bo->glob->swap_lru); |
ba4e7d97 TH |
181 | kref_get(&bo->list_kref); |
182 | } | |
183 | } | |
184 | } | |
34820324 | 185 | EXPORT_SYMBOL(ttm_bo_add_to_lru); |
ba4e7d97 | 186 | |
d6ea8886 | 187 | int ttm_bo_del_from_lru(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
188 | { |
189 | int put_count = 0; | |
190 | ||
191 | if (!list_empty(&bo->swap)) { | |
192 | list_del_init(&bo->swap); | |
193 | ++put_count; | |
194 | } | |
195 | if (!list_empty(&bo->lru)) { | |
196 | list_del_init(&bo->lru); | |
197 | ++put_count; | |
198 | } | |
199 | ||
200 | /* | |
201 | * TODO: Add a driver hook to delete from | |
202 | * driver-specific LRU's here. | |
203 | */ | |
204 | ||
205 | return put_count; | |
206 | } | |
207 | ||
ba4e7d97 TH |
208 | static void ttm_bo_ref_bug(struct kref *list_kref) |
209 | { | |
210 | BUG(); | |
211 | } | |
212 | ||
d6ea8886 DA |
213 | void ttm_bo_list_ref_sub(struct ttm_buffer_object *bo, int count, |
214 | bool never_free) | |
215 | { | |
2357cbe5 TH |
216 | kref_sub(&bo->list_kref, count, |
217 | (never_free) ? ttm_bo_ref_bug : ttm_bo_release_list); | |
d6ea8886 DA |
218 | } |
219 | ||
34820324 | 220 | void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo) |
5e45d7df | 221 | { |
34820324 | 222 | int put_count; |
ecff665f | 223 | |
34820324 ML |
224 | spin_lock(&bo->glob->lru_lock); |
225 | put_count = ttm_bo_del_from_lru(bo); | |
226 | spin_unlock(&bo->glob->lru_lock); | |
227 | ttm_bo_list_ref_sub(bo, put_count, true); | |
ecff665f | 228 | } |
34820324 | 229 | EXPORT_SYMBOL(ttm_bo_del_sub_from_lru); |
ecff665f | 230 | |
ba4e7d97 TH |
231 | /* |
232 | * Call bo->mutex locked. | |
233 | */ | |
ba4e7d97 TH |
234 | static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc) |
235 | { | |
236 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 237 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 TH |
238 | int ret = 0; |
239 | uint32_t page_flags = 0; | |
240 | ||
241 | TTM_ASSERT_LOCKED(&bo->mutex); | |
242 | bo->ttm = NULL; | |
243 | ||
ad49f501 DA |
244 | if (bdev->need_dma32) |
245 | page_flags |= TTM_PAGE_FLAG_DMA32; | |
246 | ||
ba4e7d97 TH |
247 | switch (bo->type) { |
248 | case ttm_bo_type_device: | |
249 | if (zero_alloc) | |
250 | page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC; | |
251 | case ttm_bo_type_kernel: | |
649bf3ca JG |
252 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, |
253 | page_flags, glob->dummy_read_page); | |
ba4e7d97 TH |
254 | if (unlikely(bo->ttm == NULL)) |
255 | ret = -ENOMEM; | |
256 | break; | |
129b78bf DA |
257 | case ttm_bo_type_sg: |
258 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, | |
259 | page_flags | TTM_PAGE_FLAG_SG, | |
260 | glob->dummy_read_page); | |
261 | if (unlikely(bo->ttm == NULL)) { | |
262 | ret = -ENOMEM; | |
263 | break; | |
264 | } | |
265 | bo->ttm->sg = bo->sg; | |
266 | break; | |
ba4e7d97 | 267 | default: |
25d0479a | 268 | pr_err("Illegal buffer object type\n"); |
ba4e7d97 TH |
269 | ret = -EINVAL; |
270 | break; | |
271 | } | |
272 | ||
273 | return ret; | |
274 | } | |
275 | ||
276 | static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo, | |
277 | struct ttm_mem_reg *mem, | |
9d87fa21 | 278 | bool evict, bool interruptible, |
97a875cb | 279 | bool no_wait_gpu) |
ba4e7d97 TH |
280 | { |
281 | struct ttm_bo_device *bdev = bo->bdev; | |
282 | bool old_is_pci = ttm_mem_reg_is_pci(bdev, &bo->mem); | |
283 | bool new_is_pci = ttm_mem_reg_is_pci(bdev, mem); | |
284 | struct ttm_mem_type_manager *old_man = &bdev->man[bo->mem.mem_type]; | |
285 | struct ttm_mem_type_manager *new_man = &bdev->man[mem->mem_type]; | |
286 | int ret = 0; | |
287 | ||
288 | if (old_is_pci || new_is_pci || | |
eba67093 TH |
289 | ((mem->placement & bo->mem.placement & TTM_PL_MASK_CACHING) == 0)) { |
290 | ret = ttm_mem_io_lock(old_man, true); | |
291 | if (unlikely(ret != 0)) | |
292 | goto out_err; | |
293 | ttm_bo_unmap_virtual_locked(bo); | |
294 | ttm_mem_io_unlock(old_man); | |
295 | } | |
ba4e7d97 TH |
296 | |
297 | /* | |
298 | * Create and bind a ttm if required. | |
299 | */ | |
300 | ||
8d3bb236 BS |
301 | if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) { |
302 | if (bo->ttm == NULL) { | |
ff02b13f BS |
303 | bool zero = !(old_man->flags & TTM_MEMTYPE_FLAG_FIXED); |
304 | ret = ttm_bo_add_ttm(bo, zero); | |
8d3bb236 BS |
305 | if (ret) |
306 | goto out_err; | |
307 | } | |
ba4e7d97 TH |
308 | |
309 | ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement); | |
310 | if (ret) | |
87ef9209 | 311 | goto out_err; |
ba4e7d97 TH |
312 | |
313 | if (mem->mem_type != TTM_PL_SYSTEM) { | |
314 | ret = ttm_tt_bind(bo->ttm, mem); | |
315 | if (ret) | |
316 | goto out_err; | |
317 | } | |
318 | ||
319 | if (bo->mem.mem_type == TTM_PL_SYSTEM) { | |
82ef594e BS |
320 | if (bdev->driver->move_notify) |
321 | bdev->driver->move_notify(bo, mem); | |
ca262a99 | 322 | bo->mem = *mem; |
ba4e7d97 | 323 | mem->mm_node = NULL; |
ba4e7d97 TH |
324 | goto moved; |
325 | } | |
ba4e7d97 TH |
326 | } |
327 | ||
9f1feed2 BS |
328 | if (bdev->driver->move_notify) |
329 | bdev->driver->move_notify(bo, mem); | |
330 | ||
ba4e7d97 TH |
331 | if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
332 | !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) | |
97a875cb | 333 | ret = ttm_bo_move_ttm(bo, evict, no_wait_gpu, mem); |
ba4e7d97 TH |
334 | else if (bdev->driver->move) |
335 | ret = bdev->driver->move(bo, evict, interruptible, | |
97a875cb | 336 | no_wait_gpu, mem); |
ba4e7d97 | 337 | else |
97a875cb | 338 | ret = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, mem); |
ba4e7d97 | 339 | |
9f1feed2 BS |
340 | if (ret) { |
341 | if (bdev->driver->move_notify) { | |
342 | struct ttm_mem_reg tmp_mem = *mem; | |
343 | *mem = bo->mem; | |
344 | bo->mem = tmp_mem; | |
345 | bdev->driver->move_notify(bo, mem); | |
346 | bo->mem = *mem; | |
014b3440 | 347 | *mem = tmp_mem; |
9f1feed2 | 348 | } |
ba4e7d97 | 349 | |
9f1feed2 BS |
350 | goto out_err; |
351 | } | |
dc97b340 | 352 | |
ba4e7d97 TH |
353 | moved: |
354 | if (bo->evicted) { | |
355 | ret = bdev->driver->invalidate_caches(bdev, bo->mem.placement); | |
356 | if (ret) | |
25d0479a | 357 | pr_err("Can not flush read caches\n"); |
ba4e7d97 TH |
358 | bo->evicted = false; |
359 | } | |
360 | ||
361 | if (bo->mem.mm_node) { | |
d961db75 | 362 | bo->offset = (bo->mem.start << PAGE_SHIFT) + |
ba4e7d97 TH |
363 | bdev->man[bo->mem.mem_type].gpu_offset; |
364 | bo->cur_placement = bo->mem.placement; | |
354fb52c TH |
365 | } else |
366 | bo->offset = 0; | |
ba4e7d97 TH |
367 | |
368 | return 0; | |
369 | ||
370 | out_err: | |
371 | new_man = &bdev->man[bo->mem.mem_type]; | |
372 | if ((new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && bo->ttm) { | |
373 | ttm_tt_unbind(bo->ttm); | |
374 | ttm_tt_destroy(bo->ttm); | |
375 | bo->ttm = NULL; | |
376 | } | |
377 | ||
378 | return ret; | |
379 | } | |
380 | ||
1df6a2eb | 381 | /** |
40d857bb | 382 | * Call bo::reserved. |
1df6a2eb | 383 | * Will release GPU memory type usage on destruction. |
40d857bb TH |
384 | * This is the place to put in driver specific hooks to release |
385 | * driver private resources. | |
386 | * Will release the bo::reserved lock. | |
1df6a2eb TH |
387 | */ |
388 | ||
389 | static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo) | |
390 | { | |
dc97b340 JG |
391 | if (bo->bdev->driver->move_notify) |
392 | bo->bdev->driver->move_notify(bo, NULL); | |
393 | ||
1df6a2eb | 394 | if (bo->ttm) { |
1df6a2eb TH |
395 | ttm_tt_unbind(bo->ttm); |
396 | ttm_tt_destroy(bo->ttm); | |
397 | bo->ttm = NULL; | |
1df6a2eb | 398 | } |
40d857bb | 399 | ttm_bo_mem_put(bo, &bo->mem); |
1df6a2eb | 400 | |
5e338405 | 401 | ww_mutex_unlock (&bo->resv->lock); |
1df6a2eb TH |
402 | } |
403 | ||
e1efc9b6 | 404 | static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
405 | { |
406 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 407 | struct ttm_bo_global *glob = bo->glob; |
4154f051 | 408 | struct ttm_bo_driver *driver = bdev->driver; |
aa123268 | 409 | void *sync_obj = NULL; |
e1efc9b6 | 410 | int put_count; |
ba4e7d97 TH |
411 | int ret; |
412 | ||
4154f051 | 413 | spin_lock(&glob->lru_lock); |
63d0a419 | 414 | ret = ttm_bo_reserve_nolru(bo, false, true, false, 0); |
4154f051 | 415 | |
702adba2 | 416 | spin_lock(&bdev->fence_lock); |
1717c0e2 | 417 | (void) ttm_bo_wait(bo, false, false, true); |
4154f051 | 418 | if (!ret && !bo->sync_obj) { |
702adba2 | 419 | spin_unlock(&bdev->fence_lock); |
1df6a2eb | 420 | put_count = ttm_bo_del_from_lru(bo); |
ba4e7d97 | 421 | |
40d857bb | 422 | spin_unlock(&glob->lru_lock); |
1df6a2eb | 423 | ttm_bo_cleanup_memtype_use(bo); |
ba4e7d97 | 424 | |
d6ea8886 | 425 | ttm_bo_list_ref_sub(bo, put_count, true); |
ba4e7d97 | 426 | |
e1efc9b6 | 427 | return; |
ba4e7d97 | 428 | } |
aa123268 TH |
429 | if (bo->sync_obj) |
430 | sync_obj = driver->sync_obj_ref(bo->sync_obj); | |
4154f051 ML |
431 | spin_unlock(&bdev->fence_lock); |
432 | ||
5e338405 ML |
433 | if (!ret) |
434 | ww_mutex_unlock(&bo->resv->lock); | |
e1efc9b6 TH |
435 | |
436 | kref_get(&bo->list_kref); | |
437 | list_add_tail(&bo->ddestroy, &bdev->ddestroy); | |
438 | spin_unlock(&glob->lru_lock); | |
e1efc9b6 | 439 | |
aa123268 | 440 | if (sync_obj) { |
dedfdffd | 441 | driver->sync_obj_flush(sync_obj); |
aa123268 TH |
442 | driver->sync_obj_unref(&sync_obj); |
443 | } | |
e1efc9b6 TH |
444 | schedule_delayed_work(&bdev->wq, |
445 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
446 | } | |
447 | ||
448 | /** | |
85b144f8 | 449 | * function ttm_bo_cleanup_refs_and_unlock |
e1efc9b6 TH |
450 | * If bo idle, remove from delayed- and lru lists, and unref. |
451 | * If not idle, do nothing. | |
452 | * | |
85b144f8 ML |
453 | * Must be called with lru_lock and reservation held, this function |
454 | * will drop both before returning. | |
455 | * | |
e1efc9b6 | 456 | * @interruptible Any sleeps should occur interruptibly. |
e1efc9b6 TH |
457 | * @no_wait_gpu Never wait for gpu. Return -EBUSY instead. |
458 | */ | |
459 | ||
85b144f8 ML |
460 | static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, |
461 | bool interruptible, | |
462 | bool no_wait_gpu) | |
e1efc9b6 | 463 | { |
702adba2 | 464 | struct ttm_bo_device *bdev = bo->bdev; |
85b144f8 | 465 | struct ttm_bo_driver *driver = bdev->driver; |
e1efc9b6 TH |
466 | struct ttm_bo_global *glob = bo->glob; |
467 | int put_count; | |
85b144f8 | 468 | int ret; |
e1efc9b6 | 469 | |
702adba2 | 470 | spin_lock(&bdev->fence_lock); |
85b144f8 | 471 | ret = ttm_bo_wait(bo, false, false, true); |
e1efc9b6 | 472 | |
85b144f8 ML |
473 | if (ret && !no_wait_gpu) { |
474 | void *sync_obj; | |
e1efc9b6 | 475 | |
85b144f8 ML |
476 | /* |
477 | * Take a reference to the fence and unreserve, | |
478 | * at this point the buffer should be dead, so | |
479 | * no new sync objects can be attached. | |
480 | */ | |
0953e76e | 481 | sync_obj = driver->sync_obj_ref(bo->sync_obj); |
85b144f8 | 482 | spin_unlock(&bdev->fence_lock); |
26cc40a8 | 483 | |
5e338405 | 484 | ww_mutex_unlock(&bo->resv->lock); |
26cc40a8 | 485 | spin_unlock(&glob->lru_lock); |
26cc40a8 | 486 | |
85b144f8 ML |
487 | ret = driver->sync_obj_wait(sync_obj, false, interruptible); |
488 | driver->sync_obj_unref(&sync_obj); | |
489 | if (ret) | |
b8e902f2 TH |
490 | return ret; |
491 | ||
85b144f8 ML |
492 | /* |
493 | * remove sync_obj with ttm_bo_wait, the wait should be | |
494 | * finished, and no new wait object should have been added. | |
495 | */ | |
496 | spin_lock(&bdev->fence_lock); | |
497 | ret = ttm_bo_wait(bo, false, false, true); | |
498 | WARN_ON(ret); | |
499 | spin_unlock(&bdev->fence_lock); | |
500 | if (ret) | |
501 | return ret; | |
ba4e7d97 | 502 | |
85b144f8 | 503 | spin_lock(&glob->lru_lock); |
63d0a419 | 504 | ret = ttm_bo_reserve_nolru(bo, false, true, false, 0); |
b8e902f2 | 505 | |
85b144f8 ML |
506 | /* |
507 | * We raced, and lost, someone else holds the reservation now, | |
508 | * and is probably busy in ttm_bo_cleanup_memtype_use. | |
509 | * | |
510 | * Even if it's not the case, because we finished waiting any | |
511 | * delayed destruction would succeed, so just return success | |
512 | * here. | |
513 | */ | |
514 | if (ret) { | |
515 | spin_unlock(&glob->lru_lock); | |
516 | return 0; | |
517 | } | |
518 | } else | |
519 | spin_unlock(&bdev->fence_lock); | |
ba4e7d97 | 520 | |
85b144f8 | 521 | if (ret || unlikely(list_empty(&bo->ddestroy))) { |
5e338405 | 522 | ww_mutex_unlock(&bo->resv->lock); |
a987fcaa | 523 | spin_unlock(&glob->lru_lock); |
85b144f8 | 524 | return ret; |
ba4e7d97 TH |
525 | } |
526 | ||
e1efc9b6 TH |
527 | put_count = ttm_bo_del_from_lru(bo); |
528 | list_del_init(&bo->ddestroy); | |
529 | ++put_count; | |
530 | ||
531 | spin_unlock(&glob->lru_lock); | |
532 | ttm_bo_cleanup_memtype_use(bo); | |
533 | ||
d6ea8886 | 534 | ttm_bo_list_ref_sub(bo, put_count, true); |
e1efc9b6 TH |
535 | |
536 | return 0; | |
ba4e7d97 TH |
537 | } |
538 | ||
539 | /** | |
540 | * Traverse the delayed list, and call ttm_bo_cleanup_refs on all | |
541 | * encountered buffers. | |
542 | */ | |
543 | ||
544 | static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) | |
545 | { | |
a987fcaa | 546 | struct ttm_bo_global *glob = bdev->glob; |
1a961ce0 LB |
547 | struct ttm_buffer_object *entry = NULL; |
548 | int ret = 0; | |
ba4e7d97 | 549 | |
a987fcaa | 550 | spin_lock(&glob->lru_lock); |
1a961ce0 LB |
551 | if (list_empty(&bdev->ddestroy)) |
552 | goto out_unlock; | |
553 | ||
554 | entry = list_first_entry(&bdev->ddestroy, | |
555 | struct ttm_buffer_object, ddestroy); | |
556 | kref_get(&entry->list_kref); | |
557 | ||
558 | for (;;) { | |
559 | struct ttm_buffer_object *nentry = NULL; | |
560 | ||
561 | if (entry->ddestroy.next != &bdev->ddestroy) { | |
562 | nentry = list_first_entry(&entry->ddestroy, | |
563 | struct ttm_buffer_object, ddestroy); | |
ba4e7d97 TH |
564 | kref_get(&nentry->list_kref); |
565 | } | |
ba4e7d97 | 566 | |
63d0a419 ML |
567 | ret = ttm_bo_reserve_nolru(entry, false, true, false, 0); |
568 | if (remove_all && ret) { | |
569 | spin_unlock(&glob->lru_lock); | |
570 | ret = ttm_bo_reserve_nolru(entry, false, false, | |
571 | false, 0); | |
572 | spin_lock(&glob->lru_lock); | |
573 | } | |
574 | ||
85b144f8 ML |
575 | if (!ret) |
576 | ret = ttm_bo_cleanup_refs_and_unlock(entry, false, | |
577 | !remove_all); | |
578 | else | |
579 | spin_unlock(&glob->lru_lock); | |
580 | ||
ba4e7d97 | 581 | kref_put(&entry->list_kref, ttm_bo_release_list); |
1a961ce0 LB |
582 | entry = nentry; |
583 | ||
584 | if (ret || !entry) | |
585 | goto out; | |
ba4e7d97 | 586 | |
a987fcaa | 587 | spin_lock(&glob->lru_lock); |
1a961ce0 | 588 | if (list_empty(&entry->ddestroy)) |
ba4e7d97 TH |
589 | break; |
590 | } | |
ba4e7d97 | 591 | |
1a961ce0 LB |
592 | out_unlock: |
593 | spin_unlock(&glob->lru_lock); | |
594 | out: | |
595 | if (entry) | |
596 | kref_put(&entry->list_kref, ttm_bo_release_list); | |
ba4e7d97 TH |
597 | return ret; |
598 | } | |
599 | ||
600 | static void ttm_bo_delayed_workqueue(struct work_struct *work) | |
601 | { | |
602 | struct ttm_bo_device *bdev = | |
603 | container_of(work, struct ttm_bo_device, wq.work); | |
604 | ||
605 | if (ttm_bo_delayed_delete(bdev, false)) { | |
606 | schedule_delayed_work(&bdev->wq, | |
607 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
608 | } | |
609 | } | |
610 | ||
611 | static void ttm_bo_release(struct kref *kref) | |
612 | { | |
613 | struct ttm_buffer_object *bo = | |
614 | container_of(kref, struct ttm_buffer_object, kref); | |
615 | struct ttm_bo_device *bdev = bo->bdev; | |
eba67093 | 616 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; |
ba4e7d97 | 617 | |
82fe50bc | 618 | write_lock(&bdev->vm_lock); |
ba4e7d97 TH |
619 | if (likely(bo->vm_node != NULL)) { |
620 | rb_erase(&bo->vm_rb, &bdev->addr_space_rb); | |
621 | drm_mm_put_block(bo->vm_node); | |
622 | bo->vm_node = NULL; | |
623 | } | |
624 | write_unlock(&bdev->vm_lock); | |
eba67093 TH |
625 | ttm_mem_io_lock(man, false); |
626 | ttm_mem_io_free_vm(bo); | |
627 | ttm_mem_io_unlock(man); | |
e1efc9b6 | 628 | ttm_bo_cleanup_refs_or_queue(bo); |
ba4e7d97 | 629 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
630 | } |
631 | ||
632 | void ttm_bo_unref(struct ttm_buffer_object **p_bo) | |
633 | { | |
634 | struct ttm_buffer_object *bo = *p_bo; | |
ba4e7d97 TH |
635 | |
636 | *p_bo = NULL; | |
ba4e7d97 | 637 | kref_put(&bo->kref, ttm_bo_release); |
ba4e7d97 TH |
638 | } |
639 | EXPORT_SYMBOL(ttm_bo_unref); | |
640 | ||
7c5ee536 MG |
641 | int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev) |
642 | { | |
643 | return cancel_delayed_work_sync(&bdev->wq); | |
644 | } | |
645 | EXPORT_SYMBOL(ttm_bo_lock_delayed_workqueue); | |
646 | ||
647 | void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched) | |
648 | { | |
649 | if (resched) | |
650 | schedule_delayed_work(&bdev->wq, | |
651 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
652 | } | |
653 | EXPORT_SYMBOL(ttm_bo_unlock_delayed_workqueue); | |
654 | ||
ca262a99 | 655 | static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible, |
97a875cb | 656 | bool no_wait_gpu) |
ba4e7d97 | 657 | { |
ba4e7d97 TH |
658 | struct ttm_bo_device *bdev = bo->bdev; |
659 | struct ttm_mem_reg evict_mem; | |
ca262a99 JG |
660 | struct ttm_placement placement; |
661 | int ret = 0; | |
ba4e7d97 | 662 | |
702adba2 | 663 | spin_lock(&bdev->fence_lock); |
1717c0e2 | 664 | ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); |
702adba2 | 665 | spin_unlock(&bdev->fence_lock); |
ba4e7d97 | 666 | |
78ecf091 | 667 | if (unlikely(ret != 0)) { |
98ffc415 | 668 | if (ret != -ERESTARTSYS) { |
25d0479a | 669 | pr_err("Failed to expire sync object before buffer eviction\n"); |
78ecf091 | 670 | } |
ba4e7d97 TH |
671 | goto out; |
672 | } | |
673 | ||
009a9dad | 674 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
675 | |
676 | evict_mem = bo->mem; | |
677 | evict_mem.mm_node = NULL; | |
eba67093 TH |
678 | evict_mem.bus.io_reserved_vm = false; |
679 | evict_mem.bus.io_reserved_count = 0; | |
ba4e7d97 | 680 | |
7cb7d1d7 JG |
681 | placement.fpfn = 0; |
682 | placement.lpfn = 0; | |
683 | placement.num_placement = 0; | |
684 | placement.num_busy_placement = 0; | |
ca262a99 JG |
685 | bdev->driver->evict_flags(bo, &placement); |
686 | ret = ttm_bo_mem_space(bo, &placement, &evict_mem, interruptible, | |
97a875cb | 687 | no_wait_gpu); |
ba4e7d97 | 688 | if (ret) { |
fb53f862 | 689 | if (ret != -ERESTARTSYS) { |
25d0479a JP |
690 | pr_err("Failed to find memory space for buffer 0x%p eviction\n", |
691 | bo); | |
fb53f862 JG |
692 | ttm_bo_mem_space_debug(bo, &placement); |
693 | } | |
ba4e7d97 TH |
694 | goto out; |
695 | } | |
696 | ||
697 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, interruptible, | |
97a875cb | 698 | no_wait_gpu); |
ba4e7d97 | 699 | if (ret) { |
98ffc415 | 700 | if (ret != -ERESTARTSYS) |
25d0479a | 701 | pr_err("Buffer eviction failed\n"); |
42311ff9 | 702 | ttm_bo_mem_put(bo, &evict_mem); |
ba4e7d97 TH |
703 | goto out; |
704 | } | |
ca262a99 JG |
705 | bo->evicted = true; |
706 | out: | |
707 | return ret; | |
708 | } | |
709 | ||
710 | static int ttm_mem_evict_first(struct ttm_bo_device *bdev, | |
711 | uint32_t mem_type, | |
97a875cb | 712 | bool interruptible, |
9d87fa21 | 713 | bool no_wait_gpu) |
ca262a99 JG |
714 | { |
715 | struct ttm_bo_global *glob = bdev->glob; | |
716 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
717 | struct ttm_buffer_object *bo; | |
e7ab2019 | 718 | int ret = -EBUSY, put_count; |
ba4e7d97 | 719 | |
a987fcaa | 720 | spin_lock(&glob->lru_lock); |
e7ab2019 | 721 | list_for_each_entry(bo, &man->lru, lru) { |
63d0a419 | 722 | ret = ttm_bo_reserve_nolru(bo, false, true, false, 0); |
e7ab2019 ML |
723 | if (!ret) |
724 | break; | |
725 | } | |
726 | ||
727 | if (ret) { | |
9c51ba1d | 728 | spin_unlock(&glob->lru_lock); |
e7ab2019 | 729 | return ret; |
9c51ba1d TH |
730 | } |
731 | ||
ca262a99 | 732 | kref_get(&bo->list_kref); |
9c51ba1d | 733 | |
e1efc9b6 | 734 | if (!list_empty(&bo->ddestroy)) { |
e7ab2019 ML |
735 | ret = ttm_bo_cleanup_refs_and_unlock(bo, interruptible, |
736 | no_wait_gpu); | |
e1efc9b6 | 737 | kref_put(&bo->list_kref, ttm_bo_release_list); |
b8e902f2 | 738 | return ret; |
e1efc9b6 TH |
739 | } |
740 | ||
9c51ba1d | 741 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 742 | spin_unlock(&glob->lru_lock); |
9c51ba1d TH |
743 | |
744 | BUG_ON(ret != 0); | |
745 | ||
d6ea8886 | 746 | ttm_bo_list_ref_sub(bo, put_count, true); |
9c51ba1d | 747 | |
97a875cb | 748 | ret = ttm_bo_evict(bo, interruptible, no_wait_gpu); |
ca262a99 | 749 | ttm_bo_unreserve(bo); |
9c51ba1d | 750 | |
ca262a99 | 751 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
752 | return ret; |
753 | } | |
754 | ||
42311ff9 BS |
755 | void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem) |
756 | { | |
d961db75 | 757 | struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type]; |
42311ff9 | 758 | |
d961db75 BS |
759 | if (mem->mm_node) |
760 | (*man->func->put_node)(man, mem); | |
42311ff9 BS |
761 | } |
762 | EXPORT_SYMBOL(ttm_bo_mem_put); | |
763 | ||
ba4e7d97 TH |
764 | /** |
765 | * Repeatedly evict memory from the LRU for @mem_type until we create enough | |
766 | * space, or we've evicted everything and there isn't enough space. | |
767 | */ | |
ca262a99 JG |
768 | static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, |
769 | uint32_t mem_type, | |
770 | struct ttm_placement *placement, | |
771 | struct ttm_mem_reg *mem, | |
9d87fa21 | 772 | bool interruptible, |
9d87fa21 | 773 | bool no_wait_gpu) |
ba4e7d97 | 774 | { |
ca262a99 | 775 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 | 776 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
ba4e7d97 TH |
777 | int ret; |
778 | ||
ba4e7d97 | 779 | do { |
d961db75 | 780 | ret = (*man->func->get_node)(man, bo, placement, mem); |
ca262a99 JG |
781 | if (unlikely(ret != 0)) |
782 | return ret; | |
d961db75 | 783 | if (mem->mm_node) |
ba4e7d97 | 784 | break; |
97a875cb ML |
785 | ret = ttm_mem_evict_first(bdev, mem_type, |
786 | interruptible, no_wait_gpu); | |
ba4e7d97 TH |
787 | if (unlikely(ret != 0)) |
788 | return ret; | |
ba4e7d97 | 789 | } while (1); |
d961db75 | 790 | if (mem->mm_node == NULL) |
ba4e7d97 | 791 | return -ENOMEM; |
ba4e7d97 TH |
792 | mem->mem_type = mem_type; |
793 | return 0; | |
794 | } | |
795 | ||
ae3e8122 TH |
796 | static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man, |
797 | uint32_t cur_placement, | |
798 | uint32_t proposed_placement) | |
799 | { | |
800 | uint32_t caching = proposed_placement & TTM_PL_MASK_CACHING; | |
801 | uint32_t result = proposed_placement & ~TTM_PL_MASK_CACHING; | |
802 | ||
803 | /** | |
804 | * Keep current caching if possible. | |
805 | */ | |
806 | ||
807 | if ((cur_placement & caching) != 0) | |
808 | result |= (cur_placement & caching); | |
809 | else if ((man->default_caching & caching) != 0) | |
810 | result |= man->default_caching; | |
811 | else if ((TTM_PL_FLAG_CACHED & caching) != 0) | |
812 | result |= TTM_PL_FLAG_CACHED; | |
813 | else if ((TTM_PL_FLAG_WC & caching) != 0) | |
814 | result |= TTM_PL_FLAG_WC; | |
815 | else if ((TTM_PL_FLAG_UNCACHED & caching) != 0) | |
816 | result |= TTM_PL_FLAG_UNCACHED; | |
817 | ||
818 | return result; | |
819 | } | |
820 | ||
ba4e7d97 | 821 | static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man, |
ba4e7d97 | 822 | uint32_t mem_type, |
ae3e8122 TH |
823 | uint32_t proposed_placement, |
824 | uint32_t *masked_placement) | |
ba4e7d97 TH |
825 | { |
826 | uint32_t cur_flags = ttm_bo_type_flags(mem_type); | |
827 | ||
ae3e8122 | 828 | if ((cur_flags & proposed_placement & TTM_PL_MASK_MEM) == 0) |
ba4e7d97 TH |
829 | return false; |
830 | ||
ae3e8122 | 831 | if ((proposed_placement & man->available_caching) == 0) |
ba4e7d97 | 832 | return false; |
ba4e7d97 | 833 | |
ae3e8122 TH |
834 | cur_flags |= (proposed_placement & man->available_caching); |
835 | ||
836 | *masked_placement = cur_flags; | |
ba4e7d97 TH |
837 | return true; |
838 | } | |
839 | ||
840 | /** | |
841 | * Creates space for memory region @mem according to its type. | |
842 | * | |
843 | * This function first searches for free space in compatible memory types in | |
844 | * the priority order defined by the driver. If free space isn't found, then | |
845 | * ttm_bo_mem_force_space is attempted in priority order to evict and find | |
846 | * space. | |
847 | */ | |
848 | int ttm_bo_mem_space(struct ttm_buffer_object *bo, | |
ca262a99 JG |
849 | struct ttm_placement *placement, |
850 | struct ttm_mem_reg *mem, | |
97a875cb | 851 | bool interruptible, |
9d87fa21 | 852 | bool no_wait_gpu) |
ba4e7d97 TH |
853 | { |
854 | struct ttm_bo_device *bdev = bo->bdev; | |
855 | struct ttm_mem_type_manager *man; | |
ba4e7d97 TH |
856 | uint32_t mem_type = TTM_PL_SYSTEM; |
857 | uint32_t cur_flags = 0; | |
858 | bool type_found = false; | |
859 | bool type_ok = false; | |
98ffc415 | 860 | bool has_erestartsys = false; |
ca262a99 | 861 | int i, ret; |
ba4e7d97 TH |
862 | |
863 | mem->mm_node = NULL; | |
b6637526 | 864 | for (i = 0; i < placement->num_placement; ++i) { |
ca262a99 JG |
865 | ret = ttm_mem_type_from_flags(placement->placement[i], |
866 | &mem_type); | |
867 | if (ret) | |
868 | return ret; | |
ba4e7d97 TH |
869 | man = &bdev->man[mem_type]; |
870 | ||
871 | type_ok = ttm_bo_mt_compatible(man, | |
ca262a99 JG |
872 | mem_type, |
873 | placement->placement[i], | |
874 | &cur_flags); | |
ba4e7d97 TH |
875 | |
876 | if (!type_ok) | |
877 | continue; | |
878 | ||
ae3e8122 TH |
879 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
880 | cur_flags); | |
ca262a99 JG |
881 | /* |
882 | * Use the access and other non-mapping-related flag bits from | |
883 | * the memory placement flags to the current flags | |
884 | */ | |
885 | ttm_flag_masked(&cur_flags, placement->placement[i], | |
886 | ~TTM_PL_MASK_MEMTYPE); | |
ae3e8122 | 887 | |
ba4e7d97 TH |
888 | if (mem_type == TTM_PL_SYSTEM) |
889 | break; | |
890 | ||
891 | if (man->has_type && man->use_type) { | |
892 | type_found = true; | |
d961db75 | 893 | ret = (*man->func->get_node)(man, bo, placement, mem); |
ca262a99 JG |
894 | if (unlikely(ret)) |
895 | return ret; | |
ba4e7d97 | 896 | } |
d961db75 | 897 | if (mem->mm_node) |
ba4e7d97 TH |
898 | break; |
899 | } | |
900 | ||
d961db75 | 901 | if ((type_ok && (mem_type == TTM_PL_SYSTEM)) || mem->mm_node) { |
ba4e7d97 TH |
902 | mem->mem_type = mem_type; |
903 | mem->placement = cur_flags; | |
904 | return 0; | |
905 | } | |
906 | ||
907 | if (!type_found) | |
908 | return -EINVAL; | |
909 | ||
b6637526 DA |
910 | for (i = 0; i < placement->num_busy_placement; ++i) { |
911 | ret = ttm_mem_type_from_flags(placement->busy_placement[i], | |
ca262a99 JG |
912 | &mem_type); |
913 | if (ret) | |
914 | return ret; | |
ba4e7d97 | 915 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
916 | if (!man->has_type) |
917 | continue; | |
ba4e7d97 | 918 | if (!ttm_bo_mt_compatible(man, |
ca262a99 | 919 | mem_type, |
b6637526 | 920 | placement->busy_placement[i], |
ca262a99 | 921 | &cur_flags)) |
ba4e7d97 TH |
922 | continue; |
923 | ||
ae3e8122 TH |
924 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
925 | cur_flags); | |
ca262a99 JG |
926 | /* |
927 | * Use the access and other non-mapping-related flag bits from | |
928 | * the memory placement flags to the current flags | |
929 | */ | |
b6637526 | 930 | ttm_flag_masked(&cur_flags, placement->busy_placement[i], |
ca262a99 | 931 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 932 | |
0eaddb28 TH |
933 | |
934 | if (mem_type == TTM_PL_SYSTEM) { | |
935 | mem->mem_type = mem_type; | |
936 | mem->placement = cur_flags; | |
937 | mem->mm_node = NULL; | |
938 | return 0; | |
939 | } | |
940 | ||
ca262a99 | 941 | ret = ttm_bo_mem_force_space(bo, mem_type, placement, mem, |
97a875cb | 942 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
943 | if (ret == 0 && mem->mm_node) { |
944 | mem->placement = cur_flags; | |
945 | return 0; | |
946 | } | |
98ffc415 TH |
947 | if (ret == -ERESTARTSYS) |
948 | has_erestartsys = true; | |
ba4e7d97 | 949 | } |
98ffc415 | 950 | ret = (has_erestartsys) ? -ERESTARTSYS : -ENOMEM; |
ba4e7d97 TH |
951 | return ret; |
952 | } | |
953 | EXPORT_SYMBOL(ttm_bo_mem_space); | |
954 | ||
ba4e7d97 | 955 | int ttm_bo_move_buffer(struct ttm_buffer_object *bo, |
ca262a99 | 956 | struct ttm_placement *placement, |
97a875cb | 957 | bool interruptible, |
9d87fa21 | 958 | bool no_wait_gpu) |
ba4e7d97 | 959 | { |
ba4e7d97 TH |
960 | int ret = 0; |
961 | struct ttm_mem_reg mem; | |
702adba2 | 962 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 | 963 | |
009a9dad | 964 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
965 | |
966 | /* | |
967 | * FIXME: It's possible to pipeline buffer moves. | |
968 | * Have the driver move function wait for idle when necessary, | |
969 | * instead of doing it here. | |
970 | */ | |
702adba2 | 971 | spin_lock(&bdev->fence_lock); |
1717c0e2 | 972 | ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); |
702adba2 | 973 | spin_unlock(&bdev->fence_lock); |
ba4e7d97 TH |
974 | if (ret) |
975 | return ret; | |
ba4e7d97 TH |
976 | mem.num_pages = bo->num_pages; |
977 | mem.size = mem.num_pages << PAGE_SHIFT; | |
978 | mem.page_alignment = bo->mem.page_alignment; | |
eba67093 TH |
979 | mem.bus.io_reserved_vm = false; |
980 | mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
981 | /* |
982 | * Determine where to move the buffer. | |
983 | */ | |
97a875cb ML |
984 | ret = ttm_bo_mem_space(bo, placement, &mem, |
985 | interruptible, no_wait_gpu); | |
ba4e7d97 TH |
986 | if (ret) |
987 | goto out_unlock; | |
97a875cb ML |
988 | ret = ttm_bo_handle_move_mem(bo, &mem, false, |
989 | interruptible, no_wait_gpu); | |
ba4e7d97 | 990 | out_unlock: |
d961db75 BS |
991 | if (ret && mem.mm_node) |
992 | ttm_bo_mem_put(bo, &mem); | |
ba4e7d97 TH |
993 | return ret; |
994 | } | |
995 | ||
ca262a99 | 996 | static int ttm_bo_mem_compat(struct ttm_placement *placement, |
ba4e7d97 TH |
997 | struct ttm_mem_reg *mem) |
998 | { | |
ca262a99 | 999 | int i; |
e22238ea | 1000 | |
d961db75 BS |
1001 | if (mem->mm_node && placement->lpfn != 0 && |
1002 | (mem->start < placement->fpfn || | |
1003 | mem->start + mem->num_pages > placement->lpfn)) | |
e22238ea | 1004 | return -1; |
ca262a99 JG |
1005 | |
1006 | for (i = 0; i < placement->num_placement; i++) { | |
1007 | if ((placement->placement[i] & mem->placement & | |
1008 | TTM_PL_MASK_CACHING) && | |
1009 | (placement->placement[i] & mem->placement & | |
1010 | TTM_PL_MASK_MEM)) | |
1011 | return i; | |
1012 | } | |
1013 | return -1; | |
ba4e7d97 TH |
1014 | } |
1015 | ||
09855acb JG |
1016 | int ttm_bo_validate(struct ttm_buffer_object *bo, |
1017 | struct ttm_placement *placement, | |
97a875cb | 1018 | bool interruptible, |
9d87fa21 | 1019 | bool no_wait_gpu) |
ba4e7d97 TH |
1020 | { |
1021 | int ret; | |
1022 | ||
009a9dad | 1023 | lockdep_assert_held(&bo->resv->lock.base); |
ca262a99 JG |
1024 | /* Check that range is valid */ |
1025 | if (placement->lpfn || placement->fpfn) | |
1026 | if (placement->fpfn > placement->lpfn || | |
1027 | (placement->lpfn - placement->fpfn) < bo->num_pages) | |
1028 | return -EINVAL; | |
ba4e7d97 TH |
1029 | /* |
1030 | * Check whether we need to move buffer. | |
1031 | */ | |
ca262a99 JG |
1032 | ret = ttm_bo_mem_compat(placement, &bo->mem); |
1033 | if (ret < 0) { | |
97a875cb ML |
1034 | ret = ttm_bo_move_buffer(bo, placement, interruptible, |
1035 | no_wait_gpu); | |
ca262a99 | 1036 | if (ret) |
ba4e7d97 | 1037 | return ret; |
ca262a99 JG |
1038 | } else { |
1039 | /* | |
1040 | * Use the access and other non-mapping-related flag bits from | |
1041 | * the compatible memory placement flags to the active flags | |
1042 | */ | |
1043 | ttm_flag_masked(&bo->mem.placement, placement->placement[ret], | |
1044 | ~TTM_PL_MASK_MEMTYPE); | |
ba4e7d97 | 1045 | } |
ba4e7d97 TH |
1046 | /* |
1047 | * We might need to add a TTM. | |
1048 | */ | |
ba4e7d97 TH |
1049 | if (bo->mem.mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { |
1050 | ret = ttm_bo_add_ttm(bo, true); | |
1051 | if (ret) | |
1052 | return ret; | |
1053 | } | |
ba4e7d97 TH |
1054 | return 0; |
1055 | } | |
09855acb | 1056 | EXPORT_SYMBOL(ttm_bo_validate); |
ba4e7d97 | 1057 | |
09855acb JG |
1058 | int ttm_bo_check_placement(struct ttm_buffer_object *bo, |
1059 | struct ttm_placement *placement) | |
ba4e7d97 | 1060 | { |
29e190e0 TH |
1061 | BUG_ON((placement->fpfn || placement->lpfn) && |
1062 | (bo->mem.num_pages > (placement->lpfn - placement->fpfn))); | |
ba4e7d97 | 1063 | |
ba4e7d97 TH |
1064 | return 0; |
1065 | } | |
1066 | ||
09855acb JG |
1067 | int ttm_bo_init(struct ttm_bo_device *bdev, |
1068 | struct ttm_buffer_object *bo, | |
1069 | unsigned long size, | |
1070 | enum ttm_bo_type type, | |
1071 | struct ttm_placement *placement, | |
1072 | uint32_t page_alignment, | |
09855acb | 1073 | bool interruptible, |
5df23979 | 1074 | struct file *persistent_swap_storage, |
09855acb | 1075 | size_t acc_size, |
129b78bf | 1076 | struct sg_table *sg, |
09855acb | 1077 | void (*destroy) (struct ttm_buffer_object *)) |
ba4e7d97 | 1078 | { |
09855acb | 1079 | int ret = 0; |
ba4e7d97 | 1080 | unsigned long num_pages; |
57de4ba9 | 1081 | struct ttm_mem_global *mem_glob = bdev->glob->mem_glob; |
5e338405 | 1082 | bool locked; |
57de4ba9 JG |
1083 | |
1084 | ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false); | |
1085 | if (ret) { | |
25d0479a | 1086 | pr_err("Out of kernel memory\n"); |
57de4ba9 JG |
1087 | if (destroy) |
1088 | (*destroy)(bo); | |
1089 | else | |
1090 | kfree(bo); | |
1091 | return -ENOMEM; | |
1092 | } | |
ba4e7d97 | 1093 | |
ba4e7d97 TH |
1094 | num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; |
1095 | if (num_pages == 0) { | |
25d0479a | 1096 | pr_err("Illegal buffer object size\n"); |
7dfbbdcf TH |
1097 | if (destroy) |
1098 | (*destroy)(bo); | |
1099 | else | |
1100 | kfree(bo); | |
a393c730 | 1101 | ttm_mem_global_free(mem_glob, acc_size); |
ba4e7d97 TH |
1102 | return -EINVAL; |
1103 | } | |
1104 | bo->destroy = destroy; | |
1105 | ||
ba4e7d97 TH |
1106 | kref_init(&bo->kref); |
1107 | kref_init(&bo->list_kref); | |
1108 | atomic_set(&bo->cpu_writers, 0); | |
ba4e7d97 TH |
1109 | INIT_LIST_HEAD(&bo->lru); |
1110 | INIT_LIST_HEAD(&bo->ddestroy); | |
1111 | INIT_LIST_HEAD(&bo->swap); | |
eba67093 | 1112 | INIT_LIST_HEAD(&bo->io_reserve_lru); |
ba4e7d97 | 1113 | bo->bdev = bdev; |
a987fcaa | 1114 | bo->glob = bdev->glob; |
ba4e7d97 TH |
1115 | bo->type = type; |
1116 | bo->num_pages = num_pages; | |
eb6d2c39 | 1117 | bo->mem.size = num_pages << PAGE_SHIFT; |
ba4e7d97 TH |
1118 | bo->mem.mem_type = TTM_PL_SYSTEM; |
1119 | bo->mem.num_pages = bo->num_pages; | |
1120 | bo->mem.mm_node = NULL; | |
1121 | bo->mem.page_alignment = page_alignment; | |
eba67093 TH |
1122 | bo->mem.bus.io_reserved_vm = false; |
1123 | bo->mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
1124 | bo->priv_flags = 0; |
1125 | bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED); | |
5df23979 | 1126 | bo->persistent_swap_storage = persistent_swap_storage; |
ba4e7d97 | 1127 | bo->acc_size = acc_size; |
129b78bf | 1128 | bo->sg = sg; |
5e338405 ML |
1129 | bo->resv = &bo->ttm_resv; |
1130 | reservation_object_init(bo->resv); | |
a987fcaa | 1131 | atomic_inc(&bo->glob->bo_count); |
ba4e7d97 | 1132 | |
09855acb | 1133 | ret = ttm_bo_check_placement(bo, placement); |
ba4e7d97 | 1134 | |
ba4e7d97 TH |
1135 | /* |
1136 | * For ttm_bo_type_device buffers, allocate | |
1137 | * address space from the device. | |
1138 | */ | |
5e338405 ML |
1139 | if (likely(!ret) && |
1140 | (bo->type == ttm_bo_type_device || | |
1141 | bo->type == ttm_bo_type_sg)) | |
ba4e7d97 | 1142 | ret = ttm_bo_setup_vm(bo); |
ba4e7d97 | 1143 | |
5e338405 ML |
1144 | locked = ww_mutex_trylock(&bo->resv->lock); |
1145 | WARN_ON(!locked); | |
ba4e7d97 | 1146 | |
5e338405 ML |
1147 | if (likely(!ret)) |
1148 | ret = ttm_bo_validate(bo, placement, interruptible, false); | |
ba4e7d97 | 1149 | |
ba4e7d97 | 1150 | ttm_bo_unreserve(bo); |
5e338405 ML |
1151 | |
1152 | if (unlikely(ret)) | |
1153 | ttm_bo_unref(&bo); | |
ba4e7d97 TH |
1154 | |
1155 | return ret; | |
1156 | } | |
09855acb | 1157 | EXPORT_SYMBOL(ttm_bo_init); |
ba4e7d97 | 1158 | |
57de4ba9 JG |
1159 | size_t ttm_bo_acc_size(struct ttm_bo_device *bdev, |
1160 | unsigned long bo_size, | |
1161 | unsigned struct_size) | |
ba4e7d97 | 1162 | { |
57de4ba9 JG |
1163 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; |
1164 | size_t size = 0; | |
ba4e7d97 | 1165 | |
57de4ba9 JG |
1166 | size += ttm_round_pot(struct_size); |
1167 | size += PAGE_ALIGN(npages * sizeof(void *)); | |
1168 | size += ttm_round_pot(sizeof(struct ttm_tt)); | |
1169 | return size; | |
ba4e7d97 | 1170 | } |
57de4ba9 JG |
1171 | EXPORT_SYMBOL(ttm_bo_acc_size); |
1172 | ||
1173 | size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev, | |
1174 | unsigned long bo_size, | |
1175 | unsigned struct_size) | |
1176 | { | |
1177 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; | |
1178 | size_t size = 0; | |
1179 | ||
1180 | size += ttm_round_pot(struct_size); | |
1181 | size += PAGE_ALIGN(npages * sizeof(void *)); | |
1182 | size += PAGE_ALIGN(npages * sizeof(dma_addr_t)); | |
1183 | size += ttm_round_pot(sizeof(struct ttm_dma_tt)); | |
1184 | return size; | |
1185 | } | |
1186 | EXPORT_SYMBOL(ttm_bo_dma_acc_size); | |
ba4e7d97 | 1187 | |
09855acb JG |
1188 | int ttm_bo_create(struct ttm_bo_device *bdev, |
1189 | unsigned long size, | |
1190 | enum ttm_bo_type type, | |
1191 | struct ttm_placement *placement, | |
1192 | uint32_t page_alignment, | |
09855acb | 1193 | bool interruptible, |
5df23979 | 1194 | struct file *persistent_swap_storage, |
09855acb | 1195 | struct ttm_buffer_object **p_bo) |
ba4e7d97 TH |
1196 | { |
1197 | struct ttm_buffer_object *bo; | |
57de4ba9 | 1198 | size_t acc_size; |
ca262a99 | 1199 | int ret; |
ba4e7d97 | 1200 | |
ba4e7d97 | 1201 | bo = kzalloc(sizeof(*bo), GFP_KERNEL); |
a393c730 | 1202 | if (unlikely(bo == NULL)) |
ba4e7d97 | 1203 | return -ENOMEM; |
ba4e7d97 | 1204 | |
a393c730 | 1205 | acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct ttm_buffer_object)); |
09855acb | 1206 | ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment, |
0b91c4a1 MS |
1207 | interruptible, persistent_swap_storage, acc_size, |
1208 | NULL, NULL); | |
ba4e7d97 TH |
1209 | if (likely(ret == 0)) |
1210 | *p_bo = bo; | |
1211 | ||
1212 | return ret; | |
1213 | } | |
4d798937 | 1214 | EXPORT_SYMBOL(ttm_bo_create); |
ba4e7d97 | 1215 | |
ba4e7d97 | 1216 | static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, |
ca262a99 | 1217 | unsigned mem_type, bool allow_errors) |
ba4e7d97 | 1218 | { |
ca262a99 | 1219 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
a987fcaa | 1220 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 | 1221 | int ret; |
ba4e7d97 TH |
1222 | |
1223 | /* | |
1224 | * Can't use standard list traversal since we're unlocking. | |
1225 | */ | |
1226 | ||
a987fcaa | 1227 | spin_lock(&glob->lru_lock); |
ca262a99 | 1228 | while (!list_empty(&man->lru)) { |
a987fcaa | 1229 | spin_unlock(&glob->lru_lock); |
97a875cb | 1230 | ret = ttm_mem_evict_first(bdev, mem_type, false, false); |
ca262a99 JG |
1231 | if (ret) { |
1232 | if (allow_errors) { | |
1233 | return ret; | |
1234 | } else { | |
25d0479a | 1235 | pr_err("Cleanup eviction failed\n"); |
ca262a99 JG |
1236 | } |
1237 | } | |
a987fcaa | 1238 | spin_lock(&glob->lru_lock); |
ba4e7d97 | 1239 | } |
a987fcaa | 1240 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
1241 | return 0; |
1242 | } | |
1243 | ||
1244 | int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1245 | { | |
c96e7c7a | 1246 | struct ttm_mem_type_manager *man; |
ba4e7d97 TH |
1247 | int ret = -EINVAL; |
1248 | ||
1249 | if (mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1250 | pr_err("Illegal memory type %d\n", mem_type); |
ba4e7d97 TH |
1251 | return ret; |
1252 | } | |
c96e7c7a | 1253 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
1254 | |
1255 | if (!man->has_type) { | |
25d0479a JP |
1256 | pr_err("Trying to take down uninitialized memory manager type %u\n", |
1257 | mem_type); | |
ba4e7d97 TH |
1258 | return ret; |
1259 | } | |
1260 | ||
1261 | man->use_type = false; | |
1262 | man->has_type = false; | |
1263 | ||
1264 | ret = 0; | |
1265 | if (mem_type > 0) { | |
ca262a99 | 1266 | ttm_bo_force_list_clean(bdev, mem_type, false); |
ba4e7d97 | 1267 | |
d961db75 | 1268 | ret = (*man->func->takedown)(man); |
ba4e7d97 TH |
1269 | } |
1270 | ||
1271 | return ret; | |
1272 | } | |
1273 | EXPORT_SYMBOL(ttm_bo_clean_mm); | |
1274 | ||
1275 | int ttm_bo_evict_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1276 | { | |
1277 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
1278 | ||
1279 | if (mem_type == 0 || mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1280 | pr_err("Illegal memory manager memory type %u\n", mem_type); |
ba4e7d97 TH |
1281 | return -EINVAL; |
1282 | } | |
1283 | ||
1284 | if (!man->has_type) { | |
25d0479a | 1285 | pr_err("Memory type %u has not been initialized\n", mem_type); |
ba4e7d97 TH |
1286 | return 0; |
1287 | } | |
1288 | ||
ca262a99 | 1289 | return ttm_bo_force_list_clean(bdev, mem_type, true); |
ba4e7d97 TH |
1290 | } |
1291 | EXPORT_SYMBOL(ttm_bo_evict_mm); | |
1292 | ||
1293 | int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type, | |
ca262a99 | 1294 | unsigned long p_size) |
ba4e7d97 TH |
1295 | { |
1296 | int ret = -EINVAL; | |
1297 | struct ttm_mem_type_manager *man; | |
1298 | ||
dbc4a5b8 | 1299 | BUG_ON(type >= TTM_NUM_MEM_TYPES); |
ba4e7d97 | 1300 | man = &bdev->man[type]; |
dbc4a5b8 | 1301 | BUG_ON(man->has_type); |
eba67093 TH |
1302 | man->io_reserve_fastpath = true; |
1303 | man->use_io_reserve_lru = false; | |
1304 | mutex_init(&man->io_reserve_mutex); | |
1305 | INIT_LIST_HEAD(&man->io_reserve_lru); | |
ba4e7d97 TH |
1306 | |
1307 | ret = bdev->driver->init_mem_type(bdev, type, man); | |
1308 | if (ret) | |
1309 | return ret; | |
d961db75 | 1310 | man->bdev = bdev; |
ba4e7d97 TH |
1311 | |
1312 | ret = 0; | |
1313 | if (type != TTM_PL_SYSTEM) { | |
d961db75 | 1314 | ret = (*man->func->init)(man, p_size); |
ba4e7d97 TH |
1315 | if (ret) |
1316 | return ret; | |
1317 | } | |
1318 | man->has_type = true; | |
1319 | man->use_type = true; | |
1320 | man->size = p_size; | |
1321 | ||
1322 | INIT_LIST_HEAD(&man->lru); | |
1323 | ||
1324 | return 0; | |
1325 | } | |
1326 | EXPORT_SYMBOL(ttm_bo_init_mm); | |
1327 | ||
a987fcaa TH |
1328 | static void ttm_bo_global_kobj_release(struct kobject *kobj) |
1329 | { | |
1330 | struct ttm_bo_global *glob = | |
1331 | container_of(kobj, struct ttm_bo_global, kobj); | |
1332 | ||
a987fcaa TH |
1333 | ttm_mem_unregister_shrink(glob->mem_glob, &glob->shrink); |
1334 | __free_page(glob->dummy_read_page); | |
1335 | kfree(glob); | |
1336 | } | |
1337 | ||
ba4420c2 | 1338 | void ttm_bo_global_release(struct drm_global_reference *ref) |
a987fcaa TH |
1339 | { |
1340 | struct ttm_bo_global *glob = ref->object; | |
1341 | ||
1342 | kobject_del(&glob->kobj); | |
1343 | kobject_put(&glob->kobj); | |
1344 | } | |
1345 | EXPORT_SYMBOL(ttm_bo_global_release); | |
1346 | ||
ba4420c2 | 1347 | int ttm_bo_global_init(struct drm_global_reference *ref) |
a987fcaa TH |
1348 | { |
1349 | struct ttm_bo_global_ref *bo_ref = | |
1350 | container_of(ref, struct ttm_bo_global_ref, ref); | |
1351 | struct ttm_bo_global *glob = ref->object; | |
1352 | int ret; | |
1353 | ||
1354 | mutex_init(&glob->device_list_mutex); | |
1355 | spin_lock_init(&glob->lru_lock); | |
1356 | glob->mem_glob = bo_ref->mem_glob; | |
1357 | glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); | |
1358 | ||
1359 | if (unlikely(glob->dummy_read_page == NULL)) { | |
1360 | ret = -ENOMEM; | |
1361 | goto out_no_drp; | |
1362 | } | |
1363 | ||
1364 | INIT_LIST_HEAD(&glob->swap_lru); | |
1365 | INIT_LIST_HEAD(&glob->device_list); | |
1366 | ||
1367 | ttm_mem_init_shrink(&glob->shrink, ttm_bo_swapout); | |
1368 | ret = ttm_mem_register_shrink(glob->mem_glob, &glob->shrink); | |
1369 | if (unlikely(ret != 0)) { | |
25d0479a | 1370 | pr_err("Could not register buffer object swapout\n"); |
a987fcaa TH |
1371 | goto out_no_shrink; |
1372 | } | |
1373 | ||
a987fcaa TH |
1374 | atomic_set(&glob->bo_count, 0); |
1375 | ||
b642ed06 RD |
1376 | ret = kobject_init_and_add( |
1377 | &glob->kobj, &ttm_bo_glob_kobj_type, ttm_get_kobj(), "buffer_objects"); | |
a987fcaa TH |
1378 | if (unlikely(ret != 0)) |
1379 | kobject_put(&glob->kobj); | |
1380 | return ret; | |
1381 | out_no_shrink: | |
1382 | __free_page(glob->dummy_read_page); | |
1383 | out_no_drp: | |
1384 | kfree(glob); | |
1385 | return ret; | |
1386 | } | |
1387 | EXPORT_SYMBOL(ttm_bo_global_init); | |
1388 | ||
1389 | ||
ba4e7d97 TH |
1390 | int ttm_bo_device_release(struct ttm_bo_device *bdev) |
1391 | { | |
1392 | int ret = 0; | |
1393 | unsigned i = TTM_NUM_MEM_TYPES; | |
1394 | struct ttm_mem_type_manager *man; | |
a987fcaa | 1395 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 TH |
1396 | |
1397 | while (i--) { | |
1398 | man = &bdev->man[i]; | |
1399 | if (man->has_type) { | |
1400 | man->use_type = false; | |
1401 | if ((i != TTM_PL_SYSTEM) && ttm_bo_clean_mm(bdev, i)) { | |
1402 | ret = -EBUSY; | |
25d0479a JP |
1403 | pr_err("DRM memory manager type %d is not clean\n", |
1404 | i); | |
ba4e7d97 TH |
1405 | } |
1406 | man->has_type = false; | |
1407 | } | |
1408 | } | |
1409 | ||
a987fcaa TH |
1410 | mutex_lock(&glob->device_list_mutex); |
1411 | list_del(&bdev->device_list); | |
1412 | mutex_unlock(&glob->device_list_mutex); | |
1413 | ||
f094cfc6 | 1414 | cancel_delayed_work_sync(&bdev->wq); |
ba4e7d97 TH |
1415 | |
1416 | while (ttm_bo_delayed_delete(bdev, true)) | |
1417 | ; | |
1418 | ||
a987fcaa | 1419 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
1420 | if (list_empty(&bdev->ddestroy)) |
1421 | TTM_DEBUG("Delayed destroy list was clean\n"); | |
1422 | ||
1423 | if (list_empty(&bdev->man[0].lru)) | |
1424 | TTM_DEBUG("Swap list was clean\n"); | |
a987fcaa | 1425 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1426 | |
ba4e7d97 TH |
1427 | BUG_ON(!drm_mm_clean(&bdev->addr_space_mm)); |
1428 | write_lock(&bdev->vm_lock); | |
1429 | drm_mm_takedown(&bdev->addr_space_mm); | |
1430 | write_unlock(&bdev->vm_lock); | |
1431 | ||
ba4e7d97 TH |
1432 | return ret; |
1433 | } | |
1434 | EXPORT_SYMBOL(ttm_bo_device_release); | |
1435 | ||
ba4e7d97 | 1436 | int ttm_bo_device_init(struct ttm_bo_device *bdev, |
a987fcaa TH |
1437 | struct ttm_bo_global *glob, |
1438 | struct ttm_bo_driver *driver, | |
51c8b407 | 1439 | uint64_t file_page_offset, |
ad49f501 | 1440 | bool need_dma32) |
ba4e7d97 TH |
1441 | { |
1442 | int ret = -EINVAL; | |
1443 | ||
ba4e7d97 | 1444 | rwlock_init(&bdev->vm_lock); |
ba4e7d97 | 1445 | bdev->driver = driver; |
ba4e7d97 TH |
1446 | |
1447 | memset(bdev->man, 0, sizeof(bdev->man)); | |
1448 | ||
ba4e7d97 TH |
1449 | /* |
1450 | * Initialize the system memory buffer type. | |
1451 | * Other types need to be driver / IOCTL initialized. | |
1452 | */ | |
ca262a99 | 1453 | ret = ttm_bo_init_mm(bdev, TTM_PL_SYSTEM, 0); |
ba4e7d97 | 1454 | if (unlikely(ret != 0)) |
a987fcaa | 1455 | goto out_no_sys; |
ba4e7d97 TH |
1456 | |
1457 | bdev->addr_space_rb = RB_ROOT; | |
77ef8bbc | 1458 | drm_mm_init(&bdev->addr_space_mm, file_page_offset, 0x10000000); |
ba4e7d97 TH |
1459 | |
1460 | INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue); | |
ba4e7d97 | 1461 | INIT_LIST_HEAD(&bdev->ddestroy); |
ba4e7d97 | 1462 | bdev->dev_mapping = NULL; |
a987fcaa | 1463 | bdev->glob = glob; |
ad49f501 | 1464 | bdev->need_dma32 = need_dma32; |
65705962 | 1465 | bdev->val_seq = 0; |
702adba2 | 1466 | spin_lock_init(&bdev->fence_lock); |
a987fcaa TH |
1467 | mutex_lock(&glob->device_list_mutex); |
1468 | list_add_tail(&bdev->device_list, &glob->device_list); | |
1469 | mutex_unlock(&glob->device_list_mutex); | |
ba4e7d97 TH |
1470 | |
1471 | return 0; | |
a987fcaa | 1472 | out_no_sys: |
ba4e7d97 TH |
1473 | return ret; |
1474 | } | |
1475 | EXPORT_SYMBOL(ttm_bo_device_init); | |
1476 | ||
1477 | /* | |
1478 | * buffer object vm functions. | |
1479 | */ | |
1480 | ||
1481 | bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
1482 | { | |
1483 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
1484 | ||
1485 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) { | |
1486 | if (mem->mem_type == TTM_PL_SYSTEM) | |
1487 | return false; | |
1488 | ||
1489 | if (man->flags & TTM_MEMTYPE_FLAG_CMA) | |
1490 | return false; | |
1491 | ||
1492 | if (mem->placement & TTM_PL_FLAG_CACHED) | |
1493 | return false; | |
1494 | } | |
1495 | return true; | |
1496 | } | |
1497 | ||
eba67093 | 1498 | void ttm_bo_unmap_virtual_locked(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
1499 | { |
1500 | struct ttm_bo_device *bdev = bo->bdev; | |
1501 | loff_t offset = (loff_t) bo->addr_space_offset; | |
1502 | loff_t holelen = ((loff_t) bo->mem.num_pages) << PAGE_SHIFT; | |
1503 | ||
1504 | if (!bdev->dev_mapping) | |
1505 | return; | |
ba4e7d97 | 1506 | unmap_mapping_range(bdev->dev_mapping, offset, holelen, 1); |
eba67093 | 1507 | ttm_mem_io_free_vm(bo); |
ba4e7d97 | 1508 | } |
eba67093 TH |
1509 | |
1510 | void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo) | |
1511 | { | |
1512 | struct ttm_bo_device *bdev = bo->bdev; | |
1513 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; | |
1514 | ||
1515 | ttm_mem_io_lock(man, false); | |
1516 | ttm_bo_unmap_virtual_locked(bo); | |
1517 | ttm_mem_io_unlock(man); | |
ba4e7d97 | 1518 | } |
eba67093 TH |
1519 | |
1520 | ||
e024e110 | 1521 | EXPORT_SYMBOL(ttm_bo_unmap_virtual); |
ba4e7d97 TH |
1522 | |
1523 | static void ttm_bo_vm_insert_rb(struct ttm_buffer_object *bo) | |
1524 | { | |
1525 | struct ttm_bo_device *bdev = bo->bdev; | |
1526 | struct rb_node **cur = &bdev->addr_space_rb.rb_node; | |
1527 | struct rb_node *parent = NULL; | |
1528 | struct ttm_buffer_object *cur_bo; | |
1529 | unsigned long offset = bo->vm_node->start; | |
1530 | unsigned long cur_offset; | |
1531 | ||
1532 | while (*cur) { | |
1533 | parent = *cur; | |
1534 | cur_bo = rb_entry(parent, struct ttm_buffer_object, vm_rb); | |
1535 | cur_offset = cur_bo->vm_node->start; | |
1536 | if (offset < cur_offset) | |
1537 | cur = &parent->rb_left; | |
1538 | else if (offset > cur_offset) | |
1539 | cur = &parent->rb_right; | |
1540 | else | |
1541 | BUG(); | |
1542 | } | |
1543 | ||
1544 | rb_link_node(&bo->vm_rb, parent, cur); | |
1545 | rb_insert_color(&bo->vm_rb, &bdev->addr_space_rb); | |
1546 | } | |
1547 | ||
1548 | /** | |
1549 | * ttm_bo_setup_vm: | |
1550 | * | |
1551 | * @bo: the buffer to allocate address space for | |
1552 | * | |
1553 | * Allocate address space in the drm device so that applications | |
1554 | * can mmap the buffer and access the contents. This only | |
1555 | * applies to ttm_bo_type_device objects as others are not | |
1556 | * placed in the drm device address space. | |
1557 | */ | |
1558 | ||
1559 | static int ttm_bo_setup_vm(struct ttm_buffer_object *bo) | |
1560 | { | |
1561 | struct ttm_bo_device *bdev = bo->bdev; | |
1562 | int ret; | |
1563 | ||
1564 | retry_pre_get: | |
1565 | ret = drm_mm_pre_get(&bdev->addr_space_mm); | |
1566 | if (unlikely(ret != 0)) | |
1567 | return ret; | |
1568 | ||
1569 | write_lock(&bdev->vm_lock); | |
1570 | bo->vm_node = drm_mm_search_free(&bdev->addr_space_mm, | |
1571 | bo->mem.num_pages, 0, 0); | |
1572 | ||
1573 | if (unlikely(bo->vm_node == NULL)) { | |
1574 | ret = -ENOMEM; | |
1575 | goto out_unlock; | |
1576 | } | |
1577 | ||
1578 | bo->vm_node = drm_mm_get_block_atomic(bo->vm_node, | |
1579 | bo->mem.num_pages, 0); | |
1580 | ||
1581 | if (unlikely(bo->vm_node == NULL)) { | |
1582 | write_unlock(&bdev->vm_lock); | |
1583 | goto retry_pre_get; | |
1584 | } | |
1585 | ||
1586 | ttm_bo_vm_insert_rb(bo); | |
1587 | write_unlock(&bdev->vm_lock); | |
1588 | bo->addr_space_offset = ((uint64_t) bo->vm_node->start) << PAGE_SHIFT; | |
1589 | ||
1590 | return 0; | |
1591 | out_unlock: | |
1592 | write_unlock(&bdev->vm_lock); | |
1593 | return ret; | |
1594 | } | |
1595 | ||
1596 | int ttm_bo_wait(struct ttm_buffer_object *bo, | |
1717c0e2 | 1597 | bool lazy, bool interruptible, bool no_wait) |
ba4e7d97 TH |
1598 | { |
1599 | struct ttm_bo_driver *driver = bo->bdev->driver; | |
702adba2 | 1600 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 | 1601 | void *sync_obj; |
ba4e7d97 TH |
1602 | int ret = 0; |
1603 | ||
1717c0e2 | 1604 | if (likely(bo->sync_obj == NULL)) |
ba4e7d97 TH |
1605 | return 0; |
1606 | ||
1717c0e2 | 1607 | while (bo->sync_obj) { |
ba4e7d97 | 1608 | |
dedfdffd | 1609 | if (driver->sync_obj_signaled(bo->sync_obj)) { |
1717c0e2 DA |
1610 | void *tmp_obj = bo->sync_obj; |
1611 | bo->sync_obj = NULL; | |
1612 | clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); | |
1613 | spin_unlock(&bdev->fence_lock); | |
1614 | driver->sync_obj_unref(&tmp_obj); | |
1615 | spin_lock(&bdev->fence_lock); | |
ba4e7d97 TH |
1616 | continue; |
1617 | } | |
1618 | ||
1619 | if (no_wait) | |
1620 | return -EBUSY; | |
1621 | ||
1717c0e2 | 1622 | sync_obj = driver->sync_obj_ref(bo->sync_obj); |
702adba2 | 1623 | spin_unlock(&bdev->fence_lock); |
dedfdffd | 1624 | ret = driver->sync_obj_wait(sync_obj, |
ba4e7d97 TH |
1625 | lazy, interruptible); |
1626 | if (unlikely(ret != 0)) { | |
1627 | driver->sync_obj_unref(&sync_obj); | |
702adba2 | 1628 | spin_lock(&bdev->fence_lock); |
ba4e7d97 TH |
1629 | return ret; |
1630 | } | |
702adba2 | 1631 | spin_lock(&bdev->fence_lock); |
5fb4ef0e | 1632 | if (likely(bo->sync_obj == sync_obj)) { |
1717c0e2 DA |
1633 | void *tmp_obj = bo->sync_obj; |
1634 | bo->sync_obj = NULL; | |
1635 | clear_bit(TTM_BO_PRIV_FLAG_MOVING, | |
1636 | &bo->priv_flags); | |
1637 | spin_unlock(&bdev->fence_lock); | |
1638 | driver->sync_obj_unref(&sync_obj); | |
1639 | driver->sync_obj_unref(&tmp_obj); | |
1640 | spin_lock(&bdev->fence_lock); | |
fee280d3 | 1641 | } else { |
702adba2 | 1642 | spin_unlock(&bdev->fence_lock); |
fee280d3 | 1643 | driver->sync_obj_unref(&sync_obj); |
702adba2 | 1644 | spin_lock(&bdev->fence_lock); |
ba4e7d97 TH |
1645 | } |
1646 | } | |
1647 | return 0; | |
1648 | } | |
1649 | EXPORT_SYMBOL(ttm_bo_wait); | |
1650 | ||
ba4e7d97 TH |
1651 | int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) |
1652 | { | |
702adba2 | 1653 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 TH |
1654 | int ret = 0; |
1655 | ||
1656 | /* | |
8cfe92d6 | 1657 | * Using ttm_bo_reserve makes sure the lru lists are updated. |
ba4e7d97 TH |
1658 | */ |
1659 | ||
1660 | ret = ttm_bo_reserve(bo, true, no_wait, false, 0); | |
1661 | if (unlikely(ret != 0)) | |
1662 | return ret; | |
702adba2 | 1663 | spin_lock(&bdev->fence_lock); |
1717c0e2 | 1664 | ret = ttm_bo_wait(bo, false, true, no_wait); |
702adba2 | 1665 | spin_unlock(&bdev->fence_lock); |
ba4e7d97 TH |
1666 | if (likely(ret == 0)) |
1667 | atomic_inc(&bo->cpu_writers); | |
1668 | ttm_bo_unreserve(bo); | |
1669 | return ret; | |
1670 | } | |
d1ede145 | 1671 | EXPORT_SYMBOL(ttm_bo_synccpu_write_grab); |
ba4e7d97 TH |
1672 | |
1673 | void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo) | |
1674 | { | |
654aa792 | 1675 | atomic_dec(&bo->cpu_writers); |
ba4e7d97 | 1676 | } |
d1ede145 | 1677 | EXPORT_SYMBOL(ttm_bo_synccpu_write_release); |
ba4e7d97 TH |
1678 | |
1679 | /** | |
1680 | * A buffer object shrink method that tries to swap out the first | |
1681 | * buffer object on the bo_global::swap_lru list. | |
1682 | */ | |
1683 | ||
1684 | static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) | |
1685 | { | |
a987fcaa TH |
1686 | struct ttm_bo_global *glob = |
1687 | container_of(shrink, struct ttm_bo_global, shrink); | |
ba4e7d97 TH |
1688 | struct ttm_buffer_object *bo; |
1689 | int ret = -EBUSY; | |
1690 | int put_count; | |
1691 | uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); | |
1692 | ||
a987fcaa | 1693 | spin_lock(&glob->lru_lock); |
2b7b3ad2 | 1694 | list_for_each_entry(bo, &glob->swap_lru, swap) { |
63d0a419 | 1695 | ret = ttm_bo_reserve_nolru(bo, false, true, false, 0); |
2b7b3ad2 ML |
1696 | if (!ret) |
1697 | break; | |
1698 | } | |
85b144f8 | 1699 | |
2b7b3ad2 ML |
1700 | if (ret) { |
1701 | spin_unlock(&glob->lru_lock); | |
1702 | return ret; | |
1703 | } | |
e1efc9b6 | 1704 | |
2b7b3ad2 | 1705 | kref_get(&bo->list_kref); |
ba4e7d97 | 1706 | |
2b7b3ad2 ML |
1707 | if (!list_empty(&bo->ddestroy)) { |
1708 | ret = ttm_bo_cleanup_refs_and_unlock(bo, false, false); | |
1709 | kref_put(&bo->list_kref, ttm_bo_release_list); | |
1710 | return ret; | |
ba4e7d97 TH |
1711 | } |
1712 | ||
ba4e7d97 | 1713 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 1714 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1715 | |
d6ea8886 | 1716 | ttm_bo_list_ref_sub(bo, put_count, true); |
ba4e7d97 TH |
1717 | |
1718 | /** | |
1719 | * Wait for GPU, then move to system cached. | |
1720 | */ | |
1721 | ||
702adba2 | 1722 | spin_lock(&bo->bdev->fence_lock); |
1717c0e2 | 1723 | ret = ttm_bo_wait(bo, false, false, false); |
702adba2 | 1724 | spin_unlock(&bo->bdev->fence_lock); |
ba4e7d97 TH |
1725 | |
1726 | if (unlikely(ret != 0)) | |
1727 | goto out; | |
1728 | ||
1729 | if ((bo->mem.placement & swap_placement) != swap_placement) { | |
1730 | struct ttm_mem_reg evict_mem; | |
1731 | ||
1732 | evict_mem = bo->mem; | |
1733 | evict_mem.mm_node = NULL; | |
1734 | evict_mem.placement = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED; | |
1735 | evict_mem.mem_type = TTM_PL_SYSTEM; | |
1736 | ||
1737 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, | |
97a875cb | 1738 | false, false); |
ba4e7d97 TH |
1739 | if (unlikely(ret != 0)) |
1740 | goto out; | |
1741 | } | |
1742 | ||
1743 | ttm_bo_unmap_virtual(bo); | |
1744 | ||
1745 | /** | |
1746 | * Swap out. Buffer will be swapped in again as soon as | |
1747 | * anyone tries to access a ttm page. | |
1748 | */ | |
1749 | ||
3f09ea4e TH |
1750 | if (bo->bdev->driver->swap_notify) |
1751 | bo->bdev->driver->swap_notify(bo); | |
1752 | ||
5df23979 | 1753 | ret = ttm_tt_swapout(bo->ttm, bo->persistent_swap_storage); |
ba4e7d97 TH |
1754 | out: |
1755 | ||
1756 | /** | |
1757 | * | |
1758 | * Unreserve without putting on LRU to avoid swapping out an | |
1759 | * already swapped buffer. | |
1760 | */ | |
1761 | ||
5e338405 | 1762 | ww_mutex_unlock(&bo->resv->lock); |
ba4e7d97 TH |
1763 | kref_put(&bo->list_kref, ttm_bo_release_list); |
1764 | return ret; | |
1765 | } | |
1766 | ||
1767 | void ttm_bo_swapout_all(struct ttm_bo_device *bdev) | |
1768 | { | |
a987fcaa | 1769 | while (ttm_bo_swapout(&bdev->glob->shrink) == 0) |
ba4e7d97 TH |
1770 | ; |
1771 | } | |
e99e1e78 | 1772 | EXPORT_SYMBOL(ttm_bo_swapout_all); |