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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; | |
ba4e7d97 | 167 | |
009a9dad | 168 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
169 | |
170 | if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { | |
171 | ||
172 | BUG_ON(!list_empty(&bo->lru)); | |
173 | ||
98c2872a | 174 | list_add(&bo->lru, bdev->driver->lru_tail(bo)); |
ba4e7d97 TH |
175 | kref_get(&bo->list_kref); |
176 | ||
ed704a43 | 177 | if (bo->ttm && !(bo->ttm->page_flags & TTM_PAGE_FLAG_SG)) { |
98c2872a | 178 | list_add(&bo->swap, bdev->driver->swap_lru_tail(bo)); |
ba4e7d97 TH |
179 | kref_get(&bo->list_kref); |
180 | } | |
181 | } | |
182 | } | |
34820324 | 183 | EXPORT_SYMBOL(ttm_bo_add_to_lru); |
ba4e7d97 | 184 | |
d6ea8886 | 185 | int ttm_bo_del_from_lru(struct ttm_buffer_object *bo) |
ba4e7d97 | 186 | { |
c3ea576e | 187 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 TH |
188 | int put_count = 0; |
189 | ||
c3ea576e CK |
190 | if (bdev->driver->lru_removal) |
191 | bdev->driver->lru_removal(bo); | |
192 | ||
ba4e7d97 TH |
193 | if (!list_empty(&bo->swap)) { |
194 | list_del_init(&bo->swap); | |
195 | ++put_count; | |
196 | } | |
197 | if (!list_empty(&bo->lru)) { | |
198 | list_del_init(&bo->lru); | |
199 | ++put_count; | |
200 | } | |
201 | ||
ba4e7d97 TH |
202 | return put_count; |
203 | } | |
204 | ||
ba4e7d97 TH |
205 | static void ttm_bo_ref_bug(struct kref *list_kref) |
206 | { | |
207 | BUG(); | |
208 | } | |
209 | ||
d6ea8886 DA |
210 | void ttm_bo_list_ref_sub(struct ttm_buffer_object *bo, int count, |
211 | bool never_free) | |
212 | { | |
2357cbe5 TH |
213 | kref_sub(&bo->list_kref, count, |
214 | (never_free) ? ttm_bo_ref_bug : ttm_bo_release_list); | |
d6ea8886 DA |
215 | } |
216 | ||
34820324 | 217 | void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo) |
5e45d7df | 218 | { |
34820324 | 219 | int put_count; |
ecff665f | 220 | |
34820324 ML |
221 | spin_lock(&bo->glob->lru_lock); |
222 | put_count = ttm_bo_del_from_lru(bo); | |
223 | spin_unlock(&bo->glob->lru_lock); | |
224 | ttm_bo_list_ref_sub(bo, put_count, true); | |
ecff665f | 225 | } |
34820324 | 226 | EXPORT_SYMBOL(ttm_bo_del_sub_from_lru); |
ecff665f | 227 | |
ab749618 CK |
228 | void ttm_bo_move_to_lru_tail(struct ttm_buffer_object *bo) |
229 | { | |
230 | struct ttm_bo_device *bdev = bo->bdev; | |
56fc3502 | 231 | int put_count = 0; |
ab749618 CK |
232 | |
233 | lockdep_assert_held(&bo->resv->lock.base); | |
234 | ||
c3ea576e CK |
235 | if (bdev->driver->lru_removal) |
236 | bdev->driver->lru_removal(bo); | |
237 | ||
56fc3502 FC |
238 | put_count = ttm_bo_del_from_lru(bo); |
239 | ttm_bo_list_ref_sub(bo, put_count, true); | |
240 | ttm_bo_add_to_lru(bo); | |
ab749618 CK |
241 | } |
242 | EXPORT_SYMBOL(ttm_bo_move_to_lru_tail); | |
243 | ||
98c2872a CK |
244 | struct list_head *ttm_bo_default_lru_tail(struct ttm_buffer_object *bo) |
245 | { | |
246 | return bo->bdev->man[bo->mem.mem_type].lru.prev; | |
247 | } | |
248 | EXPORT_SYMBOL(ttm_bo_default_lru_tail); | |
249 | ||
250 | struct list_head *ttm_bo_default_swap_lru_tail(struct ttm_buffer_object *bo) | |
251 | { | |
252 | return bo->glob->swap_lru.prev; | |
253 | } | |
254 | EXPORT_SYMBOL(ttm_bo_default_swap_lru_tail); | |
255 | ||
ba4e7d97 TH |
256 | /* |
257 | * Call bo->mutex locked. | |
258 | */ | |
ba4e7d97 TH |
259 | static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc) |
260 | { | |
261 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 262 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 TH |
263 | int ret = 0; |
264 | uint32_t page_flags = 0; | |
265 | ||
266 | TTM_ASSERT_LOCKED(&bo->mutex); | |
267 | bo->ttm = NULL; | |
268 | ||
ad49f501 DA |
269 | if (bdev->need_dma32) |
270 | page_flags |= TTM_PAGE_FLAG_DMA32; | |
271 | ||
ba4e7d97 TH |
272 | switch (bo->type) { |
273 | case ttm_bo_type_device: | |
274 | if (zero_alloc) | |
275 | page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC; | |
276 | case ttm_bo_type_kernel: | |
649bf3ca JG |
277 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, |
278 | page_flags, glob->dummy_read_page); | |
ba4e7d97 TH |
279 | if (unlikely(bo->ttm == NULL)) |
280 | ret = -ENOMEM; | |
281 | break; | |
129b78bf DA |
282 | case ttm_bo_type_sg: |
283 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, | |
284 | page_flags | TTM_PAGE_FLAG_SG, | |
285 | glob->dummy_read_page); | |
286 | if (unlikely(bo->ttm == NULL)) { | |
287 | ret = -ENOMEM; | |
288 | break; | |
289 | } | |
290 | bo->ttm->sg = bo->sg; | |
291 | break; | |
ba4e7d97 | 292 | default: |
25d0479a | 293 | pr_err("Illegal buffer object type\n"); |
ba4e7d97 TH |
294 | ret = -EINVAL; |
295 | break; | |
296 | } | |
297 | ||
298 | return ret; | |
299 | } | |
300 | ||
301 | static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo, | |
302 | struct ttm_mem_reg *mem, | |
9d87fa21 | 303 | bool evict, bool interruptible, |
97a875cb | 304 | bool no_wait_gpu) |
ba4e7d97 TH |
305 | { |
306 | struct ttm_bo_device *bdev = bo->bdev; | |
307 | bool old_is_pci = ttm_mem_reg_is_pci(bdev, &bo->mem); | |
308 | bool new_is_pci = ttm_mem_reg_is_pci(bdev, mem); | |
309 | struct ttm_mem_type_manager *old_man = &bdev->man[bo->mem.mem_type]; | |
310 | struct ttm_mem_type_manager *new_man = &bdev->man[mem->mem_type]; | |
311 | int ret = 0; | |
312 | ||
313 | if (old_is_pci || new_is_pci || | |
eba67093 TH |
314 | ((mem->placement & bo->mem.placement & TTM_PL_MASK_CACHING) == 0)) { |
315 | ret = ttm_mem_io_lock(old_man, true); | |
316 | if (unlikely(ret != 0)) | |
317 | goto out_err; | |
318 | ttm_bo_unmap_virtual_locked(bo); | |
319 | ttm_mem_io_unlock(old_man); | |
320 | } | |
ba4e7d97 TH |
321 | |
322 | /* | |
323 | * Create and bind a ttm if required. | |
324 | */ | |
325 | ||
8d3bb236 BS |
326 | if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) { |
327 | if (bo->ttm == NULL) { | |
ff02b13f BS |
328 | bool zero = !(old_man->flags & TTM_MEMTYPE_FLAG_FIXED); |
329 | ret = ttm_bo_add_ttm(bo, zero); | |
8d3bb236 BS |
330 | if (ret) |
331 | goto out_err; | |
332 | } | |
ba4e7d97 TH |
333 | |
334 | ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement); | |
335 | if (ret) | |
87ef9209 | 336 | goto out_err; |
ba4e7d97 TH |
337 | |
338 | if (mem->mem_type != TTM_PL_SYSTEM) { | |
339 | ret = ttm_tt_bind(bo->ttm, mem); | |
340 | if (ret) | |
341 | goto out_err; | |
342 | } | |
343 | ||
344 | if (bo->mem.mem_type == TTM_PL_SYSTEM) { | |
82ef594e BS |
345 | if (bdev->driver->move_notify) |
346 | bdev->driver->move_notify(bo, mem); | |
ca262a99 | 347 | bo->mem = *mem; |
ba4e7d97 | 348 | mem->mm_node = NULL; |
ba4e7d97 TH |
349 | goto moved; |
350 | } | |
ba4e7d97 TH |
351 | } |
352 | ||
9f1feed2 BS |
353 | if (bdev->driver->move_notify) |
354 | bdev->driver->move_notify(bo, mem); | |
355 | ||
ba4e7d97 TH |
356 | if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
357 | !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) | |
97a875cb | 358 | ret = ttm_bo_move_ttm(bo, evict, no_wait_gpu, mem); |
ba4e7d97 TH |
359 | else if (bdev->driver->move) |
360 | ret = bdev->driver->move(bo, evict, interruptible, | |
97a875cb | 361 | no_wait_gpu, mem); |
ba4e7d97 | 362 | else |
97a875cb | 363 | ret = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, mem); |
ba4e7d97 | 364 | |
9f1feed2 BS |
365 | if (ret) { |
366 | if (bdev->driver->move_notify) { | |
367 | struct ttm_mem_reg tmp_mem = *mem; | |
368 | *mem = bo->mem; | |
369 | bo->mem = tmp_mem; | |
370 | bdev->driver->move_notify(bo, mem); | |
371 | bo->mem = *mem; | |
014b3440 | 372 | *mem = tmp_mem; |
9f1feed2 | 373 | } |
ba4e7d97 | 374 | |
9f1feed2 BS |
375 | goto out_err; |
376 | } | |
dc97b340 | 377 | |
ba4e7d97 TH |
378 | moved: |
379 | if (bo->evicted) { | |
9ef7506f RC |
380 | if (bdev->driver->invalidate_caches) { |
381 | ret = bdev->driver->invalidate_caches(bdev, bo->mem.placement); | |
382 | if (ret) | |
383 | pr_err("Can not flush read caches\n"); | |
384 | } | |
ba4e7d97 TH |
385 | bo->evicted = false; |
386 | } | |
387 | ||
388 | if (bo->mem.mm_node) { | |
d961db75 | 389 | bo->offset = (bo->mem.start << PAGE_SHIFT) + |
ba4e7d97 TH |
390 | bdev->man[bo->mem.mem_type].gpu_offset; |
391 | bo->cur_placement = bo->mem.placement; | |
354fb52c TH |
392 | } else |
393 | bo->offset = 0; | |
ba4e7d97 TH |
394 | |
395 | return 0; | |
396 | ||
397 | out_err: | |
398 | new_man = &bdev->man[bo->mem.mem_type]; | |
399 | if ((new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && bo->ttm) { | |
400 | ttm_tt_unbind(bo->ttm); | |
401 | ttm_tt_destroy(bo->ttm); | |
402 | bo->ttm = NULL; | |
403 | } | |
404 | ||
405 | return ret; | |
406 | } | |
407 | ||
1df6a2eb | 408 | /** |
40d857bb | 409 | * Call bo::reserved. |
1df6a2eb | 410 | * Will release GPU memory type usage on destruction. |
40d857bb TH |
411 | * This is the place to put in driver specific hooks to release |
412 | * driver private resources. | |
413 | * Will release the bo::reserved lock. | |
1df6a2eb TH |
414 | */ |
415 | ||
416 | static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo) | |
417 | { | |
dc97b340 JG |
418 | if (bo->bdev->driver->move_notify) |
419 | bo->bdev->driver->move_notify(bo, NULL); | |
420 | ||
1df6a2eb | 421 | if (bo->ttm) { |
1df6a2eb TH |
422 | ttm_tt_unbind(bo->ttm); |
423 | ttm_tt_destroy(bo->ttm); | |
424 | bo->ttm = NULL; | |
1df6a2eb | 425 | } |
40d857bb | 426 | ttm_bo_mem_put(bo, &bo->mem); |
1df6a2eb | 427 | |
5e338405 | 428 | ww_mutex_unlock (&bo->resv->lock); |
1df6a2eb TH |
429 | } |
430 | ||
f2c24b83 ML |
431 | static void ttm_bo_flush_all_fences(struct ttm_buffer_object *bo) |
432 | { | |
433 | struct reservation_object_list *fobj; | |
434 | struct fence *fence; | |
435 | int i; | |
436 | ||
437 | fobj = reservation_object_get_list(bo->resv); | |
438 | fence = reservation_object_get_excl(bo->resv); | |
439 | if (fence && !fence->ops->signaled) | |
440 | fence_enable_sw_signaling(fence); | |
441 | ||
442 | for (i = 0; fobj && i < fobj->shared_count; ++i) { | |
443 | fence = rcu_dereference_protected(fobj->shared[i], | |
444 | reservation_object_held(bo->resv)); | |
445 | ||
446 | if (!fence->ops->signaled) | |
447 | fence_enable_sw_signaling(fence); | |
448 | } | |
449 | } | |
450 | ||
e1efc9b6 | 451 | static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
452 | { |
453 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 454 | struct ttm_bo_global *glob = bo->glob; |
e1efc9b6 | 455 | int put_count; |
ba4e7d97 TH |
456 | int ret; |
457 | ||
4154f051 | 458 | spin_lock(&glob->lru_lock); |
dfd5e50e | 459 | ret = __ttm_bo_reserve(bo, false, true, NULL); |
4154f051 | 460 | |
dd7cfd64 | 461 | if (!ret) { |
8aa6d4fc | 462 | if (!ttm_bo_wait(bo, false, true)) { |
dd7cfd64 | 463 | put_count = ttm_bo_del_from_lru(bo); |
ba4e7d97 | 464 | |
dd7cfd64 ML |
465 | spin_unlock(&glob->lru_lock); |
466 | ttm_bo_cleanup_memtype_use(bo); | |
ba4e7d97 | 467 | |
dd7cfd64 | 468 | ttm_bo_list_ref_sub(bo, put_count, true); |
4154f051 | 469 | |
dd7cfd64 | 470 | return; |
f2c24b83 ML |
471 | } else |
472 | ttm_bo_flush_all_fences(bo); | |
15205fbc TH |
473 | |
474 | /* | |
475 | * Make NO_EVICT bos immediately available to | |
476 | * shrinkers, now that they are queued for | |
477 | * destruction. | |
478 | */ | |
479 | if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT) { | |
480 | bo->mem.placement &= ~TTM_PL_FLAG_NO_EVICT; | |
481 | ttm_bo_add_to_lru(bo); | |
482 | } | |
483 | ||
c7523083 | 484 | __ttm_bo_unreserve(bo); |
15205fbc | 485 | } |
e1efc9b6 TH |
486 | |
487 | kref_get(&bo->list_kref); | |
488 | list_add_tail(&bo->ddestroy, &bdev->ddestroy); | |
489 | spin_unlock(&glob->lru_lock); | |
e1efc9b6 | 490 | |
e1efc9b6 TH |
491 | schedule_delayed_work(&bdev->wq, |
492 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
493 | } | |
494 | ||
495 | /** | |
85b144f8 | 496 | * function ttm_bo_cleanup_refs_and_unlock |
e1efc9b6 TH |
497 | * If bo idle, remove from delayed- and lru lists, and unref. |
498 | * If not idle, do nothing. | |
499 | * | |
85b144f8 ML |
500 | * Must be called with lru_lock and reservation held, this function |
501 | * will drop both before returning. | |
502 | * | |
e1efc9b6 | 503 | * @interruptible Any sleeps should occur interruptibly. |
e1efc9b6 TH |
504 | * @no_wait_gpu Never wait for gpu. Return -EBUSY instead. |
505 | */ | |
506 | ||
85b144f8 ML |
507 | static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, |
508 | bool interruptible, | |
509 | bool no_wait_gpu) | |
e1efc9b6 TH |
510 | { |
511 | struct ttm_bo_global *glob = bo->glob; | |
512 | int put_count; | |
85b144f8 | 513 | int ret; |
e1efc9b6 | 514 | |
8aa6d4fc | 515 | ret = ttm_bo_wait(bo, false, true); |
e1efc9b6 | 516 | |
85b144f8 | 517 | if (ret && !no_wait_gpu) { |
472db7ab ML |
518 | long lret; |
519 | ww_mutex_unlock(&bo->resv->lock); | |
520 | spin_unlock(&glob->lru_lock); | |
521 | ||
522 | lret = reservation_object_wait_timeout_rcu(bo->resv, | |
523 | true, | |
524 | interruptible, | |
525 | 30 * HZ); | |
526 | ||
527 | if (lret < 0) | |
528 | return lret; | |
529 | else if (lret == 0) | |
530 | return -EBUSY; | |
b8e902f2 | 531 | |
85b144f8 | 532 | spin_lock(&glob->lru_lock); |
dfd5e50e | 533 | ret = __ttm_bo_reserve(bo, false, true, NULL); |
b8e902f2 | 534 | |
85b144f8 ML |
535 | /* |
536 | * We raced, and lost, someone else holds the reservation now, | |
537 | * and is probably busy in ttm_bo_cleanup_memtype_use. | |
538 | * | |
539 | * Even if it's not the case, because we finished waiting any | |
540 | * delayed destruction would succeed, so just return success | |
541 | * here. | |
542 | */ | |
543 | if (ret) { | |
544 | spin_unlock(&glob->lru_lock); | |
545 | return 0; | |
546 | } | |
7040138f ML |
547 | |
548 | /* | |
549 | * remove sync_obj with ttm_bo_wait, the wait should be | |
550 | * finished, and no new wait object should have been added. | |
551 | */ | |
8aa6d4fc | 552 | ret = ttm_bo_wait(bo, false, true); |
7040138f ML |
553 | WARN_ON(ret); |
554 | } | |
ba4e7d97 | 555 | |
85b144f8 | 556 | if (ret || unlikely(list_empty(&bo->ddestroy))) { |
c7523083 | 557 | __ttm_bo_unreserve(bo); |
a987fcaa | 558 | spin_unlock(&glob->lru_lock); |
85b144f8 | 559 | return ret; |
ba4e7d97 TH |
560 | } |
561 | ||
e1efc9b6 TH |
562 | put_count = ttm_bo_del_from_lru(bo); |
563 | list_del_init(&bo->ddestroy); | |
564 | ++put_count; | |
565 | ||
566 | spin_unlock(&glob->lru_lock); | |
567 | ttm_bo_cleanup_memtype_use(bo); | |
568 | ||
d6ea8886 | 569 | ttm_bo_list_ref_sub(bo, put_count, true); |
e1efc9b6 TH |
570 | |
571 | return 0; | |
ba4e7d97 TH |
572 | } |
573 | ||
574 | /** | |
575 | * Traverse the delayed list, and call ttm_bo_cleanup_refs on all | |
576 | * encountered buffers. | |
577 | */ | |
578 | ||
579 | static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) | |
580 | { | |
a987fcaa | 581 | struct ttm_bo_global *glob = bdev->glob; |
1a961ce0 LB |
582 | struct ttm_buffer_object *entry = NULL; |
583 | int ret = 0; | |
ba4e7d97 | 584 | |
a987fcaa | 585 | spin_lock(&glob->lru_lock); |
1a961ce0 LB |
586 | if (list_empty(&bdev->ddestroy)) |
587 | goto out_unlock; | |
588 | ||
589 | entry = list_first_entry(&bdev->ddestroy, | |
590 | struct ttm_buffer_object, ddestroy); | |
591 | kref_get(&entry->list_kref); | |
592 | ||
593 | for (;;) { | |
594 | struct ttm_buffer_object *nentry = NULL; | |
595 | ||
596 | if (entry->ddestroy.next != &bdev->ddestroy) { | |
597 | nentry = list_first_entry(&entry->ddestroy, | |
598 | struct ttm_buffer_object, ddestroy); | |
ba4e7d97 TH |
599 | kref_get(&nentry->list_kref); |
600 | } | |
ba4e7d97 | 601 | |
dfd5e50e | 602 | ret = __ttm_bo_reserve(entry, false, true, NULL); |
63d0a419 ML |
603 | if (remove_all && ret) { |
604 | spin_unlock(&glob->lru_lock); | |
dfd5e50e | 605 | ret = __ttm_bo_reserve(entry, false, false, NULL); |
63d0a419 ML |
606 | spin_lock(&glob->lru_lock); |
607 | } | |
608 | ||
85b144f8 ML |
609 | if (!ret) |
610 | ret = ttm_bo_cleanup_refs_and_unlock(entry, false, | |
611 | !remove_all); | |
612 | else | |
613 | spin_unlock(&glob->lru_lock); | |
614 | ||
ba4e7d97 | 615 | kref_put(&entry->list_kref, ttm_bo_release_list); |
1a961ce0 LB |
616 | entry = nentry; |
617 | ||
618 | if (ret || !entry) | |
619 | goto out; | |
ba4e7d97 | 620 | |
a987fcaa | 621 | spin_lock(&glob->lru_lock); |
1a961ce0 | 622 | if (list_empty(&entry->ddestroy)) |
ba4e7d97 TH |
623 | break; |
624 | } | |
ba4e7d97 | 625 | |
1a961ce0 LB |
626 | out_unlock: |
627 | spin_unlock(&glob->lru_lock); | |
628 | out: | |
629 | if (entry) | |
630 | kref_put(&entry->list_kref, ttm_bo_release_list); | |
ba4e7d97 TH |
631 | return ret; |
632 | } | |
633 | ||
634 | static void ttm_bo_delayed_workqueue(struct work_struct *work) | |
635 | { | |
636 | struct ttm_bo_device *bdev = | |
637 | container_of(work, struct ttm_bo_device, wq.work); | |
638 | ||
639 | if (ttm_bo_delayed_delete(bdev, false)) { | |
640 | schedule_delayed_work(&bdev->wq, | |
641 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
642 | } | |
643 | } | |
644 | ||
645 | static void ttm_bo_release(struct kref *kref) | |
646 | { | |
647 | struct ttm_buffer_object *bo = | |
648 | container_of(kref, struct ttm_buffer_object, kref); | |
649 | struct ttm_bo_device *bdev = bo->bdev; | |
eba67093 | 650 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; |
ba4e7d97 | 651 | |
72525b3f | 652 | drm_vma_offset_remove(&bdev->vma_manager, &bo->vma_node); |
eba67093 TH |
653 | ttm_mem_io_lock(man, false); |
654 | ttm_mem_io_free_vm(bo); | |
655 | ttm_mem_io_unlock(man); | |
e1efc9b6 | 656 | ttm_bo_cleanup_refs_or_queue(bo); |
ba4e7d97 | 657 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
658 | } |
659 | ||
660 | void ttm_bo_unref(struct ttm_buffer_object **p_bo) | |
661 | { | |
662 | struct ttm_buffer_object *bo = *p_bo; | |
ba4e7d97 TH |
663 | |
664 | *p_bo = NULL; | |
ba4e7d97 | 665 | kref_put(&bo->kref, ttm_bo_release); |
ba4e7d97 TH |
666 | } |
667 | EXPORT_SYMBOL(ttm_bo_unref); | |
668 | ||
7c5ee536 MG |
669 | int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev) |
670 | { | |
671 | return cancel_delayed_work_sync(&bdev->wq); | |
672 | } | |
673 | EXPORT_SYMBOL(ttm_bo_lock_delayed_workqueue); | |
674 | ||
675 | void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched) | |
676 | { | |
677 | if (resched) | |
678 | schedule_delayed_work(&bdev->wq, | |
679 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
680 | } | |
681 | EXPORT_SYMBOL(ttm_bo_unlock_delayed_workqueue); | |
682 | ||
ca262a99 | 683 | static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible, |
97a875cb | 684 | bool no_wait_gpu) |
ba4e7d97 | 685 | { |
ba4e7d97 TH |
686 | struct ttm_bo_device *bdev = bo->bdev; |
687 | struct ttm_mem_reg evict_mem; | |
ca262a99 JG |
688 | struct ttm_placement placement; |
689 | int ret = 0; | |
ba4e7d97 | 690 | |
8aa6d4fc | 691 | ret = ttm_bo_wait(bo, interruptible, no_wait_gpu); |
ba4e7d97 | 692 | |
78ecf091 | 693 | if (unlikely(ret != 0)) { |
98ffc415 | 694 | if (ret != -ERESTARTSYS) { |
25d0479a | 695 | pr_err("Failed to expire sync object before buffer eviction\n"); |
78ecf091 | 696 | } |
ba4e7d97 TH |
697 | goto out; |
698 | } | |
699 | ||
009a9dad | 700 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
701 | |
702 | evict_mem = bo->mem; | |
703 | evict_mem.mm_node = NULL; | |
eba67093 TH |
704 | evict_mem.bus.io_reserved_vm = false; |
705 | evict_mem.bus.io_reserved_count = 0; | |
ba4e7d97 | 706 | |
7cb7d1d7 JG |
707 | placement.num_placement = 0; |
708 | placement.num_busy_placement = 0; | |
ca262a99 JG |
709 | bdev->driver->evict_flags(bo, &placement); |
710 | ret = ttm_bo_mem_space(bo, &placement, &evict_mem, interruptible, | |
97a875cb | 711 | no_wait_gpu); |
ba4e7d97 | 712 | if (ret) { |
fb53f862 | 713 | if (ret != -ERESTARTSYS) { |
25d0479a JP |
714 | pr_err("Failed to find memory space for buffer 0x%p eviction\n", |
715 | bo); | |
fb53f862 JG |
716 | ttm_bo_mem_space_debug(bo, &placement); |
717 | } | |
ba4e7d97 TH |
718 | goto out; |
719 | } | |
720 | ||
721 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, interruptible, | |
97a875cb | 722 | no_wait_gpu); |
ba4e7d97 | 723 | if (ret) { |
98ffc415 | 724 | if (ret != -ERESTARTSYS) |
25d0479a | 725 | pr_err("Buffer eviction failed\n"); |
42311ff9 | 726 | ttm_bo_mem_put(bo, &evict_mem); |
ba4e7d97 TH |
727 | goto out; |
728 | } | |
ca262a99 JG |
729 | bo->evicted = true; |
730 | out: | |
731 | return ret; | |
732 | } | |
733 | ||
734 | static int ttm_mem_evict_first(struct ttm_bo_device *bdev, | |
735 | uint32_t mem_type, | |
e300180f | 736 | const struct ttm_place *place, |
97a875cb | 737 | bool interruptible, |
9d87fa21 | 738 | bool no_wait_gpu) |
ca262a99 JG |
739 | { |
740 | struct ttm_bo_global *glob = bdev->glob; | |
741 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
742 | struct ttm_buffer_object *bo; | |
e7ab2019 | 743 | int ret = -EBUSY, put_count; |
ba4e7d97 | 744 | |
a987fcaa | 745 | spin_lock(&glob->lru_lock); |
e7ab2019 | 746 | list_for_each_entry(bo, &man->lru, lru) { |
dfd5e50e | 747 | ret = __ttm_bo_reserve(bo, false, true, NULL); |
e300180f MD |
748 | if (!ret) { |
749 | if (place && (place->fpfn || place->lpfn)) { | |
750 | /* Don't evict this BO if it's outside of the | |
751 | * requested placement range | |
752 | */ | |
753 | if (place->fpfn >= (bo->mem.start + bo->mem.size) || | |
754 | (place->lpfn && place->lpfn <= bo->mem.start)) { | |
755 | __ttm_bo_unreserve(bo); | |
756 | ret = -EBUSY; | |
757 | continue; | |
758 | } | |
759 | } | |
760 | ||
e7ab2019 | 761 | break; |
e300180f | 762 | } |
e7ab2019 ML |
763 | } |
764 | ||
765 | if (ret) { | |
9c51ba1d | 766 | spin_unlock(&glob->lru_lock); |
e7ab2019 | 767 | return ret; |
9c51ba1d TH |
768 | } |
769 | ||
ca262a99 | 770 | kref_get(&bo->list_kref); |
9c51ba1d | 771 | |
e1efc9b6 | 772 | if (!list_empty(&bo->ddestroy)) { |
e7ab2019 ML |
773 | ret = ttm_bo_cleanup_refs_and_unlock(bo, interruptible, |
774 | no_wait_gpu); | |
e1efc9b6 | 775 | kref_put(&bo->list_kref, ttm_bo_release_list); |
b8e902f2 | 776 | return ret; |
e1efc9b6 TH |
777 | } |
778 | ||
9c51ba1d | 779 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 780 | spin_unlock(&glob->lru_lock); |
9c51ba1d TH |
781 | |
782 | BUG_ON(ret != 0); | |
783 | ||
d6ea8886 | 784 | ttm_bo_list_ref_sub(bo, put_count, true); |
9c51ba1d | 785 | |
97a875cb | 786 | ret = ttm_bo_evict(bo, interruptible, no_wait_gpu); |
ca262a99 | 787 | ttm_bo_unreserve(bo); |
9c51ba1d | 788 | |
ca262a99 | 789 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
790 | return ret; |
791 | } | |
792 | ||
42311ff9 BS |
793 | void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem) |
794 | { | |
d961db75 | 795 | struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type]; |
42311ff9 | 796 | |
d961db75 BS |
797 | if (mem->mm_node) |
798 | (*man->func->put_node)(man, mem); | |
42311ff9 BS |
799 | } |
800 | EXPORT_SYMBOL(ttm_bo_mem_put); | |
801 | ||
ba4e7d97 TH |
802 | /** |
803 | * Repeatedly evict memory from the LRU for @mem_type until we create enough | |
804 | * space, or we've evicted everything and there isn't enough space. | |
805 | */ | |
ca262a99 JG |
806 | static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, |
807 | uint32_t mem_type, | |
f1217ed0 | 808 | const struct ttm_place *place, |
ca262a99 | 809 | struct ttm_mem_reg *mem, |
9d87fa21 | 810 | bool interruptible, |
9d87fa21 | 811 | bool no_wait_gpu) |
ba4e7d97 | 812 | { |
ca262a99 | 813 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 | 814 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
ba4e7d97 TH |
815 | int ret; |
816 | ||
ba4e7d97 | 817 | do { |
f1217ed0 | 818 | ret = (*man->func->get_node)(man, bo, place, mem); |
ca262a99 JG |
819 | if (unlikely(ret != 0)) |
820 | return ret; | |
d961db75 | 821 | if (mem->mm_node) |
ba4e7d97 | 822 | break; |
e300180f | 823 | ret = ttm_mem_evict_first(bdev, mem_type, place, |
97a875cb | 824 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
825 | if (unlikely(ret != 0)) |
826 | return ret; | |
ba4e7d97 | 827 | } while (1); |
d961db75 | 828 | if (mem->mm_node == NULL) |
ba4e7d97 | 829 | return -ENOMEM; |
ba4e7d97 TH |
830 | mem->mem_type = mem_type; |
831 | return 0; | |
832 | } | |
833 | ||
ae3e8122 TH |
834 | static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man, |
835 | uint32_t cur_placement, | |
836 | uint32_t proposed_placement) | |
837 | { | |
838 | uint32_t caching = proposed_placement & TTM_PL_MASK_CACHING; | |
839 | uint32_t result = proposed_placement & ~TTM_PL_MASK_CACHING; | |
840 | ||
841 | /** | |
842 | * Keep current caching if possible. | |
843 | */ | |
844 | ||
845 | if ((cur_placement & caching) != 0) | |
846 | result |= (cur_placement & caching); | |
847 | else if ((man->default_caching & caching) != 0) | |
848 | result |= man->default_caching; | |
849 | else if ((TTM_PL_FLAG_CACHED & caching) != 0) | |
850 | result |= TTM_PL_FLAG_CACHED; | |
851 | else if ((TTM_PL_FLAG_WC & caching) != 0) | |
852 | result |= TTM_PL_FLAG_WC; | |
853 | else if ((TTM_PL_FLAG_UNCACHED & caching) != 0) | |
854 | result |= TTM_PL_FLAG_UNCACHED; | |
855 | ||
856 | return result; | |
857 | } | |
858 | ||
ba4e7d97 | 859 | static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man, |
ba4e7d97 | 860 | uint32_t mem_type, |
f1217ed0 | 861 | const struct ttm_place *place, |
ae3e8122 | 862 | uint32_t *masked_placement) |
ba4e7d97 TH |
863 | { |
864 | uint32_t cur_flags = ttm_bo_type_flags(mem_type); | |
865 | ||
f1217ed0 | 866 | if ((cur_flags & place->flags & TTM_PL_MASK_MEM) == 0) |
ba4e7d97 TH |
867 | return false; |
868 | ||
f1217ed0 | 869 | if ((place->flags & man->available_caching) == 0) |
ba4e7d97 | 870 | return false; |
ba4e7d97 | 871 | |
f1217ed0 | 872 | cur_flags |= (place->flags & man->available_caching); |
ae3e8122 TH |
873 | |
874 | *masked_placement = cur_flags; | |
ba4e7d97 TH |
875 | return true; |
876 | } | |
877 | ||
878 | /** | |
879 | * Creates space for memory region @mem according to its type. | |
880 | * | |
881 | * This function first searches for free space in compatible memory types in | |
882 | * the priority order defined by the driver. If free space isn't found, then | |
883 | * ttm_bo_mem_force_space is attempted in priority order to evict and find | |
884 | * space. | |
885 | */ | |
886 | int ttm_bo_mem_space(struct ttm_buffer_object *bo, | |
ca262a99 JG |
887 | struct ttm_placement *placement, |
888 | struct ttm_mem_reg *mem, | |
97a875cb | 889 | bool interruptible, |
9d87fa21 | 890 | bool no_wait_gpu) |
ba4e7d97 TH |
891 | { |
892 | struct ttm_bo_device *bdev = bo->bdev; | |
893 | struct ttm_mem_type_manager *man; | |
ba4e7d97 TH |
894 | uint32_t mem_type = TTM_PL_SYSTEM; |
895 | uint32_t cur_flags = 0; | |
896 | bool type_found = false; | |
897 | bool type_ok = false; | |
98ffc415 | 898 | bool has_erestartsys = false; |
ca262a99 | 899 | int i, ret; |
ba4e7d97 TH |
900 | |
901 | mem->mm_node = NULL; | |
b6637526 | 902 | for (i = 0; i < placement->num_placement; ++i) { |
f1217ed0 CK |
903 | const struct ttm_place *place = &placement->placement[i]; |
904 | ||
905 | ret = ttm_mem_type_from_place(place, &mem_type); | |
ca262a99 JG |
906 | if (ret) |
907 | return ret; | |
ba4e7d97 | 908 | man = &bdev->man[mem_type]; |
e30f3963 TH |
909 | if (!man->has_type || !man->use_type) |
910 | continue; | |
ba4e7d97 | 911 | |
f1217ed0 | 912 | type_ok = ttm_bo_mt_compatible(man, mem_type, place, |
ca262a99 | 913 | &cur_flags); |
ba4e7d97 TH |
914 | |
915 | if (!type_ok) | |
916 | continue; | |
917 | ||
e30f3963 | 918 | type_found = true; |
ae3e8122 TH |
919 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
920 | cur_flags); | |
ca262a99 JG |
921 | /* |
922 | * Use the access and other non-mapping-related flag bits from | |
923 | * the memory placement flags to the current flags | |
924 | */ | |
f1217ed0 | 925 | ttm_flag_masked(&cur_flags, place->flags, |
ca262a99 | 926 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 927 | |
ba4e7d97 TH |
928 | if (mem_type == TTM_PL_SYSTEM) |
929 | break; | |
930 | ||
e30f3963 TH |
931 | ret = (*man->func->get_node)(man, bo, place, mem); |
932 | if (unlikely(ret)) | |
933 | return ret; | |
934 | ||
d961db75 | 935 | if (mem->mm_node) |
ba4e7d97 TH |
936 | break; |
937 | } | |
938 | ||
d961db75 | 939 | if ((type_ok && (mem_type == TTM_PL_SYSTEM)) || mem->mm_node) { |
ba4e7d97 TH |
940 | mem->mem_type = mem_type; |
941 | mem->placement = cur_flags; | |
942 | return 0; | |
943 | } | |
944 | ||
b6637526 | 945 | for (i = 0; i < placement->num_busy_placement; ++i) { |
f1217ed0 CK |
946 | const struct ttm_place *place = &placement->busy_placement[i]; |
947 | ||
948 | ret = ttm_mem_type_from_place(place, &mem_type); | |
ca262a99 JG |
949 | if (ret) |
950 | return ret; | |
ba4e7d97 | 951 | man = &bdev->man[mem_type]; |
e30f3963 | 952 | if (!man->has_type || !man->use_type) |
ba4e7d97 | 953 | continue; |
f1217ed0 | 954 | if (!ttm_bo_mt_compatible(man, mem_type, place, &cur_flags)) |
ba4e7d97 TH |
955 | continue; |
956 | ||
e30f3963 | 957 | type_found = true; |
ae3e8122 TH |
958 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
959 | cur_flags); | |
ca262a99 JG |
960 | /* |
961 | * Use the access and other non-mapping-related flag bits from | |
962 | * the memory placement flags to the current flags | |
963 | */ | |
f1217ed0 | 964 | ttm_flag_masked(&cur_flags, place->flags, |
ca262a99 | 965 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 966 | |
0eaddb28 TH |
967 | if (mem_type == TTM_PL_SYSTEM) { |
968 | mem->mem_type = mem_type; | |
969 | mem->placement = cur_flags; | |
970 | mem->mm_node = NULL; | |
971 | return 0; | |
972 | } | |
973 | ||
f1217ed0 | 974 | ret = ttm_bo_mem_force_space(bo, mem_type, place, mem, |
97a875cb | 975 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
976 | if (ret == 0 && mem->mm_node) { |
977 | mem->placement = cur_flags; | |
978 | return 0; | |
979 | } | |
98ffc415 TH |
980 | if (ret == -ERESTARTSYS) |
981 | has_erestartsys = true; | |
ba4e7d97 | 982 | } |
e30f3963 TH |
983 | |
984 | if (!type_found) { | |
985 | printk(KERN_ERR TTM_PFX "No compatible memory type found.\n"); | |
986 | return -EINVAL; | |
987 | } | |
988 | ||
989 | return (has_erestartsys) ? -ERESTARTSYS : -ENOMEM; | |
ba4e7d97 TH |
990 | } |
991 | EXPORT_SYMBOL(ttm_bo_mem_space); | |
992 | ||
6e87fa48 | 993 | static int ttm_bo_move_buffer(struct ttm_buffer_object *bo, |
ca262a99 | 994 | struct ttm_placement *placement, |
97a875cb | 995 | bool interruptible, |
9d87fa21 | 996 | bool no_wait_gpu) |
ba4e7d97 | 997 | { |
ba4e7d97 TH |
998 | int ret = 0; |
999 | struct ttm_mem_reg mem; | |
1000 | ||
009a9dad | 1001 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
1002 | |
1003 | /* | |
5ee7b41a CK |
1004 | * Don't wait for the BO on initial allocation. This is important when |
1005 | * the BO has an imported reservation object. | |
ba4e7d97 | 1006 | */ |
5ee7b41a CK |
1007 | if (bo->mem.mem_type != TTM_PL_SYSTEM || bo->ttm != NULL) { |
1008 | /* | |
1009 | * FIXME: It's possible to pipeline buffer moves. | |
1010 | * Have the driver move function wait for idle when necessary, | |
1011 | * instead of doing it here. | |
1012 | */ | |
8aa6d4fc | 1013 | ret = ttm_bo_wait(bo, interruptible, no_wait_gpu); |
5ee7b41a CK |
1014 | if (ret) |
1015 | return ret; | |
1016 | } | |
ba4e7d97 TH |
1017 | mem.num_pages = bo->num_pages; |
1018 | mem.size = mem.num_pages << PAGE_SHIFT; | |
1019 | mem.page_alignment = bo->mem.page_alignment; | |
eba67093 TH |
1020 | mem.bus.io_reserved_vm = false; |
1021 | mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
1022 | /* |
1023 | * Determine where to move the buffer. | |
1024 | */ | |
97a875cb ML |
1025 | ret = ttm_bo_mem_space(bo, placement, &mem, |
1026 | interruptible, no_wait_gpu); | |
ba4e7d97 TH |
1027 | if (ret) |
1028 | goto out_unlock; | |
97a875cb ML |
1029 | ret = ttm_bo_handle_move_mem(bo, &mem, false, |
1030 | interruptible, no_wait_gpu); | |
ba4e7d97 | 1031 | out_unlock: |
d961db75 BS |
1032 | if (ret && mem.mm_node) |
1033 | ttm_bo_mem_put(bo, &mem); | |
ba4e7d97 TH |
1034 | return ret; |
1035 | } | |
1036 | ||
94477bff SY |
1037 | bool ttm_bo_mem_compat(struct ttm_placement *placement, |
1038 | struct ttm_mem_reg *mem, | |
1039 | uint32_t *new_flags) | |
ba4e7d97 | 1040 | { |
ca262a99 | 1041 | int i; |
e22238ea | 1042 | |
ca262a99 | 1043 | for (i = 0; i < placement->num_placement; i++) { |
f1217ed0 | 1044 | const struct ttm_place *heap = &placement->placement[i]; |
9ace2ef7 | 1045 | if (mem->mm_node && |
f1217ed0 | 1046 | (mem->start < heap->fpfn || |
9ace2ef7 | 1047 | (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) |
f1217ed0 CK |
1048 | continue; |
1049 | ||
1050 | *new_flags = heap->flags; | |
59c8e663 TH |
1051 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && |
1052 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1053 | return true; | |
1054 | } | |
1055 | ||
1056 | for (i = 0; i < placement->num_busy_placement; i++) { | |
f1217ed0 | 1057 | const struct ttm_place *heap = &placement->busy_placement[i]; |
9ace2ef7 | 1058 | if (mem->mm_node && |
f1217ed0 | 1059 | (mem->start < heap->fpfn || |
9ace2ef7 | 1060 | (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) |
f1217ed0 CK |
1061 | continue; |
1062 | ||
1063 | *new_flags = heap->flags; | |
59c8e663 TH |
1064 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && |
1065 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1066 | return true; | |
ca262a99 | 1067 | } |
59c8e663 TH |
1068 | |
1069 | return false; | |
ba4e7d97 | 1070 | } |
94477bff | 1071 | EXPORT_SYMBOL(ttm_bo_mem_compat); |
ba4e7d97 | 1072 | |
09855acb JG |
1073 | int ttm_bo_validate(struct ttm_buffer_object *bo, |
1074 | struct ttm_placement *placement, | |
97a875cb | 1075 | bool interruptible, |
9d87fa21 | 1076 | bool no_wait_gpu) |
ba4e7d97 TH |
1077 | { |
1078 | int ret; | |
59c8e663 | 1079 | uint32_t new_flags; |
ba4e7d97 | 1080 | |
009a9dad | 1081 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
1082 | /* |
1083 | * Check whether we need to move buffer. | |
1084 | */ | |
59c8e663 | 1085 | if (!ttm_bo_mem_compat(placement, &bo->mem, &new_flags)) { |
97a875cb ML |
1086 | ret = ttm_bo_move_buffer(bo, placement, interruptible, |
1087 | no_wait_gpu); | |
ca262a99 | 1088 | if (ret) |
ba4e7d97 | 1089 | return ret; |
ca262a99 JG |
1090 | } else { |
1091 | /* | |
1092 | * Use the access and other non-mapping-related flag bits from | |
1093 | * the compatible memory placement flags to the active flags | |
1094 | */ | |
59c8e663 | 1095 | ttm_flag_masked(&bo->mem.placement, new_flags, |
ca262a99 | 1096 | ~TTM_PL_MASK_MEMTYPE); |
ba4e7d97 | 1097 | } |
ba4e7d97 TH |
1098 | /* |
1099 | * We might need to add a TTM. | |
1100 | */ | |
ba4e7d97 TH |
1101 | if (bo->mem.mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { |
1102 | ret = ttm_bo_add_ttm(bo, true); | |
1103 | if (ret) | |
1104 | return ret; | |
1105 | } | |
ba4e7d97 TH |
1106 | return 0; |
1107 | } | |
09855acb | 1108 | EXPORT_SYMBOL(ttm_bo_validate); |
ba4e7d97 | 1109 | |
09855acb JG |
1110 | int ttm_bo_init(struct ttm_bo_device *bdev, |
1111 | struct ttm_buffer_object *bo, | |
1112 | unsigned long size, | |
1113 | enum ttm_bo_type type, | |
1114 | struct ttm_placement *placement, | |
1115 | uint32_t page_alignment, | |
09855acb | 1116 | bool interruptible, |
5df23979 | 1117 | struct file *persistent_swap_storage, |
09855acb | 1118 | size_t acc_size, |
129b78bf | 1119 | struct sg_table *sg, |
f4f4e3e3 | 1120 | struct reservation_object *resv, |
09855acb | 1121 | void (*destroy) (struct ttm_buffer_object *)) |
ba4e7d97 | 1122 | { |
09855acb | 1123 | int ret = 0; |
ba4e7d97 | 1124 | unsigned long num_pages; |
57de4ba9 | 1125 | struct ttm_mem_global *mem_glob = bdev->glob->mem_glob; |
5e338405 | 1126 | bool locked; |
57de4ba9 JG |
1127 | |
1128 | ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false); | |
1129 | if (ret) { | |
25d0479a | 1130 | pr_err("Out of kernel memory\n"); |
57de4ba9 JG |
1131 | if (destroy) |
1132 | (*destroy)(bo); | |
1133 | else | |
1134 | kfree(bo); | |
1135 | return -ENOMEM; | |
1136 | } | |
ba4e7d97 | 1137 | |
ba4e7d97 TH |
1138 | num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; |
1139 | if (num_pages == 0) { | |
25d0479a | 1140 | pr_err("Illegal buffer object size\n"); |
7dfbbdcf TH |
1141 | if (destroy) |
1142 | (*destroy)(bo); | |
1143 | else | |
1144 | kfree(bo); | |
a393c730 | 1145 | ttm_mem_global_free(mem_glob, acc_size); |
ba4e7d97 TH |
1146 | return -EINVAL; |
1147 | } | |
1148 | bo->destroy = destroy; | |
1149 | ||
ba4e7d97 TH |
1150 | kref_init(&bo->kref); |
1151 | kref_init(&bo->list_kref); | |
1152 | atomic_set(&bo->cpu_writers, 0); | |
ba4e7d97 TH |
1153 | INIT_LIST_HEAD(&bo->lru); |
1154 | INIT_LIST_HEAD(&bo->ddestroy); | |
1155 | INIT_LIST_HEAD(&bo->swap); | |
eba67093 | 1156 | INIT_LIST_HEAD(&bo->io_reserve_lru); |
c58f009e | 1157 | mutex_init(&bo->wu_mutex); |
ba4e7d97 | 1158 | bo->bdev = bdev; |
a987fcaa | 1159 | bo->glob = bdev->glob; |
ba4e7d97 TH |
1160 | bo->type = type; |
1161 | bo->num_pages = num_pages; | |
eb6d2c39 | 1162 | bo->mem.size = num_pages << PAGE_SHIFT; |
ba4e7d97 TH |
1163 | bo->mem.mem_type = TTM_PL_SYSTEM; |
1164 | bo->mem.num_pages = bo->num_pages; | |
1165 | bo->mem.mm_node = NULL; | |
1166 | bo->mem.page_alignment = page_alignment; | |
eba67093 TH |
1167 | bo->mem.bus.io_reserved_vm = false; |
1168 | bo->mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
1169 | bo->priv_flags = 0; |
1170 | bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED); | |
5df23979 | 1171 | bo->persistent_swap_storage = persistent_swap_storage; |
ba4e7d97 | 1172 | bo->acc_size = acc_size; |
129b78bf | 1173 | bo->sg = sg; |
f4f4e3e3 ML |
1174 | if (resv) { |
1175 | bo->resv = resv; | |
1176 | lockdep_assert_held(&bo->resv->lock.base); | |
1177 | } else { | |
1178 | bo->resv = &bo->ttm_resv; | |
1179 | reservation_object_init(&bo->ttm_resv); | |
1180 | } | |
a987fcaa | 1181 | atomic_inc(&bo->glob->bo_count); |
72525b3f | 1182 | drm_vma_node_reset(&bo->vma_node); |
ba4e7d97 | 1183 | |
ba4e7d97 TH |
1184 | /* |
1185 | * For ttm_bo_type_device buffers, allocate | |
1186 | * address space from the device. | |
1187 | */ | |
f1217ed0 CK |
1188 | if (bo->type == ttm_bo_type_device || |
1189 | bo->type == ttm_bo_type_sg) | |
abf19035 DH |
1190 | ret = drm_vma_offset_add(&bdev->vma_manager, &bo->vma_node, |
1191 | bo->mem.num_pages); | |
ba4e7d97 | 1192 | |
f4f4e3e3 ML |
1193 | /* passed reservation objects should already be locked, |
1194 | * since otherwise lockdep will be angered in radeon. | |
1195 | */ | |
1196 | if (!resv) { | |
1197 | locked = ww_mutex_trylock(&bo->resv->lock); | |
1198 | WARN_ON(!locked); | |
1199 | } | |
ba4e7d97 | 1200 | |
5e338405 ML |
1201 | if (likely(!ret)) |
1202 | ret = ttm_bo_validate(bo, placement, interruptible, false); | |
ba4e7d97 | 1203 | |
33d48cf8 | 1204 | if (!resv) { |
f4f4e3e3 | 1205 | ttm_bo_unreserve(bo); |
5e338405 | 1206 | |
33d48cf8 CK |
1207 | } else if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { |
1208 | spin_lock(&bo->glob->lru_lock); | |
1209 | ttm_bo_add_to_lru(bo); | |
1210 | spin_unlock(&bo->glob->lru_lock); | |
1211 | } | |
1212 | ||
5e338405 ML |
1213 | if (unlikely(ret)) |
1214 | ttm_bo_unref(&bo); | |
ba4e7d97 TH |
1215 | |
1216 | return ret; | |
1217 | } | |
09855acb | 1218 | EXPORT_SYMBOL(ttm_bo_init); |
ba4e7d97 | 1219 | |
57de4ba9 JG |
1220 | size_t ttm_bo_acc_size(struct ttm_bo_device *bdev, |
1221 | unsigned long bo_size, | |
1222 | unsigned struct_size) | |
ba4e7d97 | 1223 | { |
57de4ba9 JG |
1224 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; |
1225 | size_t size = 0; | |
ba4e7d97 | 1226 | |
57de4ba9 | 1227 | size += ttm_round_pot(struct_size); |
85621630 | 1228 | size += ttm_round_pot(npages * sizeof(void *)); |
57de4ba9 JG |
1229 | size += ttm_round_pot(sizeof(struct ttm_tt)); |
1230 | return size; | |
ba4e7d97 | 1231 | } |
57de4ba9 JG |
1232 | EXPORT_SYMBOL(ttm_bo_acc_size); |
1233 | ||
1234 | size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev, | |
1235 | unsigned long bo_size, | |
1236 | unsigned struct_size) | |
1237 | { | |
1238 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; | |
1239 | size_t size = 0; | |
1240 | ||
1241 | size += ttm_round_pot(struct_size); | |
85621630 | 1242 | size += ttm_round_pot(npages * (2*sizeof(void *) + sizeof(dma_addr_t))); |
57de4ba9 JG |
1243 | size += ttm_round_pot(sizeof(struct ttm_dma_tt)); |
1244 | return size; | |
1245 | } | |
1246 | EXPORT_SYMBOL(ttm_bo_dma_acc_size); | |
ba4e7d97 | 1247 | |
09855acb JG |
1248 | int ttm_bo_create(struct ttm_bo_device *bdev, |
1249 | unsigned long size, | |
1250 | enum ttm_bo_type type, | |
1251 | struct ttm_placement *placement, | |
1252 | uint32_t page_alignment, | |
09855acb | 1253 | bool interruptible, |
5df23979 | 1254 | struct file *persistent_swap_storage, |
09855acb | 1255 | struct ttm_buffer_object **p_bo) |
ba4e7d97 TH |
1256 | { |
1257 | struct ttm_buffer_object *bo; | |
57de4ba9 | 1258 | size_t acc_size; |
ca262a99 | 1259 | int ret; |
ba4e7d97 | 1260 | |
ba4e7d97 | 1261 | bo = kzalloc(sizeof(*bo), GFP_KERNEL); |
a393c730 | 1262 | if (unlikely(bo == NULL)) |
ba4e7d97 | 1263 | return -ENOMEM; |
ba4e7d97 | 1264 | |
a393c730 | 1265 | acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct ttm_buffer_object)); |
09855acb | 1266 | ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment, |
0b91c4a1 | 1267 | interruptible, persistent_swap_storage, acc_size, |
f4f4e3e3 | 1268 | NULL, NULL, NULL); |
ba4e7d97 TH |
1269 | if (likely(ret == 0)) |
1270 | *p_bo = bo; | |
1271 | ||
1272 | return ret; | |
1273 | } | |
4d798937 | 1274 | EXPORT_SYMBOL(ttm_bo_create); |
ba4e7d97 | 1275 | |
ba4e7d97 | 1276 | static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, |
ca262a99 | 1277 | unsigned mem_type, bool allow_errors) |
ba4e7d97 | 1278 | { |
ca262a99 | 1279 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
a987fcaa | 1280 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 | 1281 | int ret; |
ba4e7d97 TH |
1282 | |
1283 | /* | |
1284 | * Can't use standard list traversal since we're unlocking. | |
1285 | */ | |
1286 | ||
a987fcaa | 1287 | spin_lock(&glob->lru_lock); |
ca262a99 | 1288 | while (!list_empty(&man->lru)) { |
a987fcaa | 1289 | spin_unlock(&glob->lru_lock); |
e300180f | 1290 | ret = ttm_mem_evict_first(bdev, mem_type, NULL, false, false); |
ca262a99 JG |
1291 | if (ret) { |
1292 | if (allow_errors) { | |
1293 | return ret; | |
1294 | } else { | |
25d0479a | 1295 | pr_err("Cleanup eviction failed\n"); |
ca262a99 JG |
1296 | } |
1297 | } | |
a987fcaa | 1298 | spin_lock(&glob->lru_lock); |
ba4e7d97 | 1299 | } |
a987fcaa | 1300 | spin_unlock(&glob->lru_lock); |
ba4e7d97 TH |
1301 | return 0; |
1302 | } | |
1303 | ||
1304 | int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1305 | { | |
c96e7c7a | 1306 | struct ttm_mem_type_manager *man; |
ba4e7d97 TH |
1307 | int ret = -EINVAL; |
1308 | ||
1309 | if (mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1310 | pr_err("Illegal memory type %d\n", mem_type); |
ba4e7d97 TH |
1311 | return ret; |
1312 | } | |
c96e7c7a | 1313 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
1314 | |
1315 | if (!man->has_type) { | |
25d0479a JP |
1316 | pr_err("Trying to take down uninitialized memory manager type %u\n", |
1317 | mem_type); | |
ba4e7d97 TH |
1318 | return ret; |
1319 | } | |
1320 | ||
1321 | man->use_type = false; | |
1322 | man->has_type = false; | |
1323 | ||
1324 | ret = 0; | |
1325 | if (mem_type > 0) { | |
ca262a99 | 1326 | ttm_bo_force_list_clean(bdev, mem_type, false); |
ba4e7d97 | 1327 | |
d961db75 | 1328 | ret = (*man->func->takedown)(man); |
ba4e7d97 TH |
1329 | } |
1330 | ||
1331 | return ret; | |
1332 | } | |
1333 | EXPORT_SYMBOL(ttm_bo_clean_mm); | |
1334 | ||
1335 | int ttm_bo_evict_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1336 | { | |
1337 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
1338 | ||
1339 | if (mem_type == 0 || mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1340 | pr_err("Illegal memory manager memory type %u\n", mem_type); |
ba4e7d97 TH |
1341 | return -EINVAL; |
1342 | } | |
1343 | ||
1344 | if (!man->has_type) { | |
25d0479a | 1345 | pr_err("Memory type %u has not been initialized\n", mem_type); |
ba4e7d97 TH |
1346 | return 0; |
1347 | } | |
1348 | ||
ca262a99 | 1349 | return ttm_bo_force_list_clean(bdev, mem_type, true); |
ba4e7d97 TH |
1350 | } |
1351 | EXPORT_SYMBOL(ttm_bo_evict_mm); | |
1352 | ||
1353 | int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type, | |
ca262a99 | 1354 | unsigned long p_size) |
ba4e7d97 TH |
1355 | { |
1356 | int ret = -EINVAL; | |
1357 | struct ttm_mem_type_manager *man; | |
1358 | ||
dbc4a5b8 | 1359 | BUG_ON(type >= TTM_NUM_MEM_TYPES); |
ba4e7d97 | 1360 | man = &bdev->man[type]; |
dbc4a5b8 | 1361 | BUG_ON(man->has_type); |
eba67093 TH |
1362 | man->io_reserve_fastpath = true; |
1363 | man->use_io_reserve_lru = false; | |
1364 | mutex_init(&man->io_reserve_mutex); | |
1365 | INIT_LIST_HEAD(&man->io_reserve_lru); | |
ba4e7d97 TH |
1366 | |
1367 | ret = bdev->driver->init_mem_type(bdev, type, man); | |
1368 | if (ret) | |
1369 | return ret; | |
d961db75 | 1370 | man->bdev = bdev; |
ba4e7d97 TH |
1371 | |
1372 | ret = 0; | |
1373 | if (type != TTM_PL_SYSTEM) { | |
d961db75 | 1374 | ret = (*man->func->init)(man, p_size); |
ba4e7d97 TH |
1375 | if (ret) |
1376 | return ret; | |
1377 | } | |
1378 | man->has_type = true; | |
1379 | man->use_type = true; | |
1380 | man->size = p_size; | |
1381 | ||
1382 | INIT_LIST_HEAD(&man->lru); | |
1383 | ||
1384 | return 0; | |
1385 | } | |
1386 | EXPORT_SYMBOL(ttm_bo_init_mm); | |
1387 | ||
a987fcaa TH |
1388 | static void ttm_bo_global_kobj_release(struct kobject *kobj) |
1389 | { | |
1390 | struct ttm_bo_global *glob = | |
1391 | container_of(kobj, struct ttm_bo_global, kobj); | |
1392 | ||
a987fcaa TH |
1393 | ttm_mem_unregister_shrink(glob->mem_glob, &glob->shrink); |
1394 | __free_page(glob->dummy_read_page); | |
1395 | kfree(glob); | |
1396 | } | |
1397 | ||
ba4420c2 | 1398 | void ttm_bo_global_release(struct drm_global_reference *ref) |
a987fcaa TH |
1399 | { |
1400 | struct ttm_bo_global *glob = ref->object; | |
1401 | ||
1402 | kobject_del(&glob->kobj); | |
1403 | kobject_put(&glob->kobj); | |
1404 | } | |
1405 | EXPORT_SYMBOL(ttm_bo_global_release); | |
1406 | ||
ba4420c2 | 1407 | int ttm_bo_global_init(struct drm_global_reference *ref) |
a987fcaa TH |
1408 | { |
1409 | struct ttm_bo_global_ref *bo_ref = | |
1410 | container_of(ref, struct ttm_bo_global_ref, ref); | |
1411 | struct ttm_bo_global *glob = ref->object; | |
1412 | int ret; | |
1413 | ||
1414 | mutex_init(&glob->device_list_mutex); | |
1415 | spin_lock_init(&glob->lru_lock); | |
1416 | glob->mem_glob = bo_ref->mem_glob; | |
1417 | glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); | |
1418 | ||
1419 | if (unlikely(glob->dummy_read_page == NULL)) { | |
1420 | ret = -ENOMEM; | |
1421 | goto out_no_drp; | |
1422 | } | |
1423 | ||
1424 | INIT_LIST_HEAD(&glob->swap_lru); | |
1425 | INIT_LIST_HEAD(&glob->device_list); | |
1426 | ||
1427 | ttm_mem_init_shrink(&glob->shrink, ttm_bo_swapout); | |
1428 | ret = ttm_mem_register_shrink(glob->mem_glob, &glob->shrink); | |
1429 | if (unlikely(ret != 0)) { | |
25d0479a | 1430 | pr_err("Could not register buffer object swapout\n"); |
a987fcaa TH |
1431 | goto out_no_shrink; |
1432 | } | |
1433 | ||
a987fcaa TH |
1434 | atomic_set(&glob->bo_count, 0); |
1435 | ||
b642ed06 RD |
1436 | ret = kobject_init_and_add( |
1437 | &glob->kobj, &ttm_bo_glob_kobj_type, ttm_get_kobj(), "buffer_objects"); | |
a987fcaa TH |
1438 | if (unlikely(ret != 0)) |
1439 | kobject_put(&glob->kobj); | |
1440 | return ret; | |
1441 | out_no_shrink: | |
1442 | __free_page(glob->dummy_read_page); | |
1443 | out_no_drp: | |
1444 | kfree(glob); | |
1445 | return ret; | |
1446 | } | |
1447 | EXPORT_SYMBOL(ttm_bo_global_init); | |
1448 | ||
1449 | ||
ba4e7d97 TH |
1450 | int ttm_bo_device_release(struct ttm_bo_device *bdev) |
1451 | { | |
1452 | int ret = 0; | |
1453 | unsigned i = TTM_NUM_MEM_TYPES; | |
1454 | struct ttm_mem_type_manager *man; | |
a987fcaa | 1455 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 TH |
1456 | |
1457 | while (i--) { | |
1458 | man = &bdev->man[i]; | |
1459 | if (man->has_type) { | |
1460 | man->use_type = false; | |
1461 | if ((i != TTM_PL_SYSTEM) && ttm_bo_clean_mm(bdev, i)) { | |
1462 | ret = -EBUSY; | |
25d0479a JP |
1463 | pr_err("DRM memory manager type %d is not clean\n", |
1464 | i); | |
ba4e7d97 TH |
1465 | } |
1466 | man->has_type = false; | |
1467 | } | |
1468 | } | |
1469 | ||
a987fcaa TH |
1470 | mutex_lock(&glob->device_list_mutex); |
1471 | list_del(&bdev->device_list); | |
1472 | mutex_unlock(&glob->device_list_mutex); | |
1473 | ||
f094cfc6 | 1474 | cancel_delayed_work_sync(&bdev->wq); |
ba4e7d97 TH |
1475 | |
1476 | while (ttm_bo_delayed_delete(bdev, true)) | |
1477 | ; | |
1478 | ||
a987fcaa | 1479 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
1480 | if (list_empty(&bdev->ddestroy)) |
1481 | TTM_DEBUG("Delayed destroy list was clean\n"); | |
1482 | ||
1483 | if (list_empty(&bdev->man[0].lru)) | |
1484 | TTM_DEBUG("Swap list was clean\n"); | |
a987fcaa | 1485 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1486 | |
72525b3f | 1487 | drm_vma_offset_manager_destroy(&bdev->vma_manager); |
ba4e7d97 | 1488 | |
ba4e7d97 TH |
1489 | return ret; |
1490 | } | |
1491 | EXPORT_SYMBOL(ttm_bo_device_release); | |
1492 | ||
ba4e7d97 | 1493 | int ttm_bo_device_init(struct ttm_bo_device *bdev, |
a987fcaa TH |
1494 | struct ttm_bo_global *glob, |
1495 | struct ttm_bo_driver *driver, | |
44d847b7 | 1496 | struct address_space *mapping, |
51c8b407 | 1497 | uint64_t file_page_offset, |
ad49f501 | 1498 | bool need_dma32) |
ba4e7d97 TH |
1499 | { |
1500 | int ret = -EINVAL; | |
1501 | ||
ba4e7d97 | 1502 | bdev->driver = driver; |
ba4e7d97 TH |
1503 | |
1504 | memset(bdev->man, 0, sizeof(bdev->man)); | |
1505 | ||
ba4e7d97 TH |
1506 | /* |
1507 | * Initialize the system memory buffer type. | |
1508 | * Other types need to be driver / IOCTL initialized. | |
1509 | */ | |
ca262a99 | 1510 | ret = ttm_bo_init_mm(bdev, TTM_PL_SYSTEM, 0); |
ba4e7d97 | 1511 | if (unlikely(ret != 0)) |
a987fcaa | 1512 | goto out_no_sys; |
ba4e7d97 | 1513 | |
72525b3f DH |
1514 | drm_vma_offset_manager_init(&bdev->vma_manager, file_page_offset, |
1515 | 0x10000000); | |
ba4e7d97 | 1516 | INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue); |
ba4e7d97 | 1517 | INIT_LIST_HEAD(&bdev->ddestroy); |
44d847b7 | 1518 | bdev->dev_mapping = mapping; |
a987fcaa | 1519 | bdev->glob = glob; |
ad49f501 | 1520 | bdev->need_dma32 = need_dma32; |
a987fcaa TH |
1521 | mutex_lock(&glob->device_list_mutex); |
1522 | list_add_tail(&bdev->device_list, &glob->device_list); | |
1523 | mutex_unlock(&glob->device_list_mutex); | |
ba4e7d97 TH |
1524 | |
1525 | return 0; | |
a987fcaa | 1526 | out_no_sys: |
ba4e7d97 TH |
1527 | return ret; |
1528 | } | |
1529 | EXPORT_SYMBOL(ttm_bo_device_init); | |
1530 | ||
1531 | /* | |
1532 | * buffer object vm functions. | |
1533 | */ | |
1534 | ||
1535 | bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
1536 | { | |
1537 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
1538 | ||
1539 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) { | |
1540 | if (mem->mem_type == TTM_PL_SYSTEM) | |
1541 | return false; | |
1542 | ||
1543 | if (man->flags & TTM_MEMTYPE_FLAG_CMA) | |
1544 | return false; | |
1545 | ||
1546 | if (mem->placement & TTM_PL_FLAG_CACHED) | |
1547 | return false; | |
1548 | } | |
1549 | return true; | |
1550 | } | |
1551 | ||
eba67093 | 1552 | void ttm_bo_unmap_virtual_locked(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
1553 | { |
1554 | struct ttm_bo_device *bdev = bo->bdev; | |
ba4e7d97 | 1555 | |
51335df9 | 1556 | drm_vma_node_unmap(&bo->vma_node, bdev->dev_mapping); |
eba67093 | 1557 | ttm_mem_io_free_vm(bo); |
ba4e7d97 | 1558 | } |
eba67093 TH |
1559 | |
1560 | void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo) | |
1561 | { | |
1562 | struct ttm_bo_device *bdev = bo->bdev; | |
1563 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; | |
1564 | ||
1565 | ttm_mem_io_lock(man, false); | |
1566 | ttm_bo_unmap_virtual_locked(bo); | |
1567 | ttm_mem_io_unlock(man); | |
ba4e7d97 | 1568 | } |
eba67093 TH |
1569 | |
1570 | ||
e024e110 | 1571 | EXPORT_SYMBOL(ttm_bo_unmap_virtual); |
ba4e7d97 | 1572 | |
ba4e7d97 | 1573 | int ttm_bo_wait(struct ttm_buffer_object *bo, |
8aa6d4fc | 1574 | bool interruptible, bool no_wait) |
ba4e7d97 | 1575 | { |
f2c24b83 ML |
1576 | struct reservation_object_list *fobj; |
1577 | struct reservation_object *resv; | |
1578 | struct fence *excl; | |
1579 | long timeout = 15 * HZ; | |
1580 | int i; | |
7040138f | 1581 | |
f2c24b83 ML |
1582 | resv = bo->resv; |
1583 | fobj = reservation_object_get_list(resv); | |
1584 | excl = reservation_object_get_excl(resv); | |
1585 | if (excl) { | |
1586 | if (!fence_is_signaled(excl)) { | |
1587 | if (no_wait) | |
1588 | return -EBUSY; | |
ba4e7d97 | 1589 | |
f2c24b83 ML |
1590 | timeout = fence_wait_timeout(excl, |
1591 | interruptible, timeout); | |
ba4e7d97 | 1592 | } |
f2c24b83 | 1593 | } |
ba4e7d97 | 1594 | |
f2c24b83 ML |
1595 | for (i = 0; fobj && timeout > 0 && i < fobj->shared_count; ++i) { |
1596 | struct fence *fence; | |
1597 | fence = rcu_dereference_protected(fobj->shared[i], | |
1598 | reservation_object_held(resv)); | |
ba4e7d97 | 1599 | |
f2c24b83 ML |
1600 | if (!fence_is_signaled(fence)) { |
1601 | if (no_wait) | |
1602 | return -EBUSY; | |
dd7cfd64 | 1603 | |
f2c24b83 ML |
1604 | timeout = fence_wait_timeout(fence, |
1605 | interruptible, timeout); | |
ba4e7d97 TH |
1606 | } |
1607 | } | |
f2c24b83 ML |
1608 | |
1609 | if (timeout < 0) | |
1610 | return timeout; | |
1611 | ||
1612 | if (timeout == 0) | |
1613 | return -EBUSY; | |
1614 | ||
1615 | reservation_object_add_excl_fence(resv, NULL); | |
1616 | clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); | |
1617 | return 0; | |
ba4e7d97 TH |
1618 | } |
1619 | EXPORT_SYMBOL(ttm_bo_wait); | |
1620 | ||
ba4e7d97 TH |
1621 | int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) |
1622 | { | |
1623 | int ret = 0; | |
1624 | ||
1625 | /* | |
8cfe92d6 | 1626 | * Using ttm_bo_reserve makes sure the lru lists are updated. |
ba4e7d97 TH |
1627 | */ |
1628 | ||
dfd5e50e | 1629 | ret = ttm_bo_reserve(bo, true, no_wait, NULL); |
ba4e7d97 TH |
1630 | if (unlikely(ret != 0)) |
1631 | return ret; | |
8aa6d4fc | 1632 | ret = ttm_bo_wait(bo, true, no_wait); |
ba4e7d97 TH |
1633 | if (likely(ret == 0)) |
1634 | atomic_inc(&bo->cpu_writers); | |
1635 | ttm_bo_unreserve(bo); | |
1636 | return ret; | |
1637 | } | |
d1ede145 | 1638 | EXPORT_SYMBOL(ttm_bo_synccpu_write_grab); |
ba4e7d97 TH |
1639 | |
1640 | void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo) | |
1641 | { | |
654aa792 | 1642 | atomic_dec(&bo->cpu_writers); |
ba4e7d97 | 1643 | } |
d1ede145 | 1644 | EXPORT_SYMBOL(ttm_bo_synccpu_write_release); |
ba4e7d97 TH |
1645 | |
1646 | /** | |
1647 | * A buffer object shrink method that tries to swap out the first | |
1648 | * buffer object on the bo_global::swap_lru list. | |
1649 | */ | |
1650 | ||
1651 | static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) | |
1652 | { | |
a987fcaa TH |
1653 | struct ttm_bo_global *glob = |
1654 | container_of(shrink, struct ttm_bo_global, shrink); | |
ba4e7d97 TH |
1655 | struct ttm_buffer_object *bo; |
1656 | int ret = -EBUSY; | |
1657 | int put_count; | |
1658 | uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); | |
1659 | ||
a987fcaa | 1660 | spin_lock(&glob->lru_lock); |
2b7b3ad2 | 1661 | list_for_each_entry(bo, &glob->swap_lru, swap) { |
dfd5e50e | 1662 | ret = __ttm_bo_reserve(bo, false, true, NULL); |
2b7b3ad2 ML |
1663 | if (!ret) |
1664 | break; | |
1665 | } | |
85b144f8 | 1666 | |
2b7b3ad2 ML |
1667 | if (ret) { |
1668 | spin_unlock(&glob->lru_lock); | |
1669 | return ret; | |
1670 | } | |
e1efc9b6 | 1671 | |
2b7b3ad2 | 1672 | kref_get(&bo->list_kref); |
ba4e7d97 | 1673 | |
2b7b3ad2 ML |
1674 | if (!list_empty(&bo->ddestroy)) { |
1675 | ret = ttm_bo_cleanup_refs_and_unlock(bo, false, false); | |
1676 | kref_put(&bo->list_kref, ttm_bo_release_list); | |
1677 | return ret; | |
ba4e7d97 TH |
1678 | } |
1679 | ||
ba4e7d97 | 1680 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 1681 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1682 | |
d6ea8886 | 1683 | ttm_bo_list_ref_sub(bo, put_count, true); |
ba4e7d97 TH |
1684 | |
1685 | /** | |
1686 | * Wait for GPU, then move to system cached. | |
1687 | */ | |
1688 | ||
8aa6d4fc | 1689 | ret = ttm_bo_wait(bo, false, false); |
ba4e7d97 TH |
1690 | |
1691 | if (unlikely(ret != 0)) | |
1692 | goto out; | |
1693 | ||
1694 | if ((bo->mem.placement & swap_placement) != swap_placement) { | |
1695 | struct ttm_mem_reg evict_mem; | |
1696 | ||
1697 | evict_mem = bo->mem; | |
1698 | evict_mem.mm_node = NULL; | |
1699 | evict_mem.placement = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED; | |
1700 | evict_mem.mem_type = TTM_PL_SYSTEM; | |
1701 | ||
1702 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, | |
97a875cb | 1703 | false, false); |
ba4e7d97 TH |
1704 | if (unlikely(ret != 0)) |
1705 | goto out; | |
1706 | } | |
1707 | ||
1708 | ttm_bo_unmap_virtual(bo); | |
1709 | ||
1710 | /** | |
1711 | * Swap out. Buffer will be swapped in again as soon as | |
1712 | * anyone tries to access a ttm page. | |
1713 | */ | |
1714 | ||
3f09ea4e TH |
1715 | if (bo->bdev->driver->swap_notify) |
1716 | bo->bdev->driver->swap_notify(bo); | |
1717 | ||
5df23979 | 1718 | ret = ttm_tt_swapout(bo->ttm, bo->persistent_swap_storage); |
ba4e7d97 TH |
1719 | out: |
1720 | ||
1721 | /** | |
1722 | * | |
1723 | * Unreserve without putting on LRU to avoid swapping out an | |
1724 | * already swapped buffer. | |
1725 | */ | |
1726 | ||
c7523083 | 1727 | __ttm_bo_unreserve(bo); |
ba4e7d97 TH |
1728 | kref_put(&bo->list_kref, ttm_bo_release_list); |
1729 | return ret; | |
1730 | } | |
1731 | ||
1732 | void ttm_bo_swapout_all(struct ttm_bo_device *bdev) | |
1733 | { | |
a987fcaa | 1734 | while (ttm_bo_swapout(&bdev->glob->shrink) == 0) |
ba4e7d97 TH |
1735 | ; |
1736 | } | |
e99e1e78 | 1737 | EXPORT_SYMBOL(ttm_bo_swapout_all); |
c58f009e TH |
1738 | |
1739 | /** | |
1740 | * ttm_bo_wait_unreserved - interruptible wait for a buffer object to become | |
1741 | * unreserved | |
1742 | * | |
1743 | * @bo: Pointer to buffer | |
1744 | */ | |
1745 | int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo) | |
1746 | { | |
1747 | int ret; | |
1748 | ||
1749 | /* | |
1750 | * In the absense of a wait_unlocked API, | |
1751 | * Use the bo::wu_mutex to avoid triggering livelocks due to | |
1752 | * concurrent use of this function. Note that this use of | |
1753 | * bo::wu_mutex can go away if we change locking order to | |
1754 | * mmap_sem -> bo::reserve. | |
1755 | */ | |
1756 | ret = mutex_lock_interruptible(&bo->wu_mutex); | |
1757 | if (unlikely(ret != 0)) | |
1758 | return -ERESTARTSYS; | |
1759 | if (!ww_mutex_is_locked(&bo->resv->lock)) | |
1760 | goto out_unlock; | |
dfd5e50e | 1761 | ret = __ttm_bo_reserve(bo, true, false, NULL); |
c58f009e TH |
1762 | if (unlikely(ret != 0)) |
1763 | goto out_unlock; | |
c7523083 | 1764 | __ttm_bo_unreserve(bo); |
c58f009e TH |
1765 | |
1766 | out_unlock: | |
1767 | mutex_unlock(&bo->wu_mutex); | |
1768 | return ret; | |
1769 | } |