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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)); | |
4279cb14 | 149 | ttm_tt_destroy(bo->ttm); |
a987fcaa | 150 | atomic_dec(&bo->glob->bo_count); |
5bc73067 | 151 | fence_put(bo->moving); |
5e338405 ML |
152 | if (bo->resv == &bo->ttm_resv) |
153 | reservation_object_fini(&bo->ttm_resv); | |
c58f009e | 154 | mutex_destroy(&bo->wu_mutex); |
ba4e7d97 TH |
155 | if (bo->destroy) |
156 | bo->destroy(bo); | |
157 | else { | |
ba4e7d97 TH |
158 | kfree(bo); |
159 | } | |
57de4ba9 | 160 | ttm_mem_global_free(bdev->glob->mem_glob, acc_size); |
ba4e7d97 TH |
161 | } |
162 | ||
d6ea8886 | 163 | void ttm_bo_add_to_lru(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
164 | { |
165 | struct ttm_bo_device *bdev = bo->bdev; | |
ba4e7d97 | 166 | |
009a9dad | 167 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
168 | |
169 | if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { | |
170 | ||
171 | BUG_ON(!list_empty(&bo->lru)); | |
172 | ||
98c2872a | 173 | list_add(&bo->lru, bdev->driver->lru_tail(bo)); |
ba4e7d97 TH |
174 | kref_get(&bo->list_kref); |
175 | ||
ed704a43 | 176 | if (bo->ttm && !(bo->ttm->page_flags & TTM_PAGE_FLAG_SG)) { |
98c2872a | 177 | list_add(&bo->swap, bdev->driver->swap_lru_tail(bo)); |
ba4e7d97 TH |
178 | kref_get(&bo->list_kref); |
179 | } | |
180 | } | |
181 | } | |
34820324 | 182 | EXPORT_SYMBOL(ttm_bo_add_to_lru); |
ba4e7d97 | 183 | |
d6ea8886 | 184 | int ttm_bo_del_from_lru(struct ttm_buffer_object *bo) |
ba4e7d97 | 185 | { |
c3ea576e | 186 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 TH |
187 | int put_count = 0; |
188 | ||
c3ea576e CK |
189 | if (bdev->driver->lru_removal) |
190 | bdev->driver->lru_removal(bo); | |
191 | ||
ba4e7d97 TH |
192 | if (!list_empty(&bo->swap)) { |
193 | list_del_init(&bo->swap); | |
194 | ++put_count; | |
195 | } | |
196 | if (!list_empty(&bo->lru)) { | |
197 | list_del_init(&bo->lru); | |
198 | ++put_count; | |
199 | } | |
200 | ||
ba4e7d97 TH |
201 | return put_count; |
202 | } | |
203 | ||
ba4e7d97 TH |
204 | static void ttm_bo_ref_bug(struct kref *list_kref) |
205 | { | |
206 | BUG(); | |
207 | } | |
208 | ||
d6ea8886 DA |
209 | void ttm_bo_list_ref_sub(struct ttm_buffer_object *bo, int count, |
210 | bool never_free) | |
211 | { | |
2357cbe5 TH |
212 | kref_sub(&bo->list_kref, count, |
213 | (never_free) ? ttm_bo_ref_bug : ttm_bo_release_list); | |
d6ea8886 DA |
214 | } |
215 | ||
34820324 | 216 | void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo) |
5e45d7df | 217 | { |
34820324 | 218 | int put_count; |
ecff665f | 219 | |
34820324 ML |
220 | spin_lock(&bo->glob->lru_lock); |
221 | put_count = ttm_bo_del_from_lru(bo); | |
222 | spin_unlock(&bo->glob->lru_lock); | |
223 | ttm_bo_list_ref_sub(bo, put_count, true); | |
ecff665f | 224 | } |
34820324 | 225 | EXPORT_SYMBOL(ttm_bo_del_sub_from_lru); |
ecff665f | 226 | |
ab749618 CK |
227 | void ttm_bo_move_to_lru_tail(struct ttm_buffer_object *bo) |
228 | { | |
229 | struct ttm_bo_device *bdev = bo->bdev; | |
56fc3502 | 230 | int put_count = 0; |
ab749618 CK |
231 | |
232 | lockdep_assert_held(&bo->resv->lock.base); | |
233 | ||
c3ea576e CK |
234 | if (bdev->driver->lru_removal) |
235 | bdev->driver->lru_removal(bo); | |
236 | ||
56fc3502 FC |
237 | put_count = ttm_bo_del_from_lru(bo); |
238 | ttm_bo_list_ref_sub(bo, put_count, true); | |
239 | ttm_bo_add_to_lru(bo); | |
ab749618 CK |
240 | } |
241 | EXPORT_SYMBOL(ttm_bo_move_to_lru_tail); | |
242 | ||
98c2872a CK |
243 | struct list_head *ttm_bo_default_lru_tail(struct ttm_buffer_object *bo) |
244 | { | |
245 | return bo->bdev->man[bo->mem.mem_type].lru.prev; | |
246 | } | |
247 | EXPORT_SYMBOL(ttm_bo_default_lru_tail); | |
248 | ||
249 | struct list_head *ttm_bo_default_swap_lru_tail(struct ttm_buffer_object *bo) | |
250 | { | |
251 | return bo->glob->swap_lru.prev; | |
252 | } | |
253 | EXPORT_SYMBOL(ttm_bo_default_swap_lru_tail); | |
254 | ||
ba4e7d97 TH |
255 | /* |
256 | * Call bo->mutex locked. | |
257 | */ | |
ba4e7d97 TH |
258 | static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc) |
259 | { | |
260 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 261 | struct ttm_bo_global *glob = bo->glob; |
ba4e7d97 TH |
262 | int ret = 0; |
263 | uint32_t page_flags = 0; | |
264 | ||
265 | TTM_ASSERT_LOCKED(&bo->mutex); | |
266 | bo->ttm = NULL; | |
267 | ||
ad49f501 DA |
268 | if (bdev->need_dma32) |
269 | page_flags |= TTM_PAGE_FLAG_DMA32; | |
270 | ||
ba4e7d97 TH |
271 | switch (bo->type) { |
272 | case ttm_bo_type_device: | |
273 | if (zero_alloc) | |
274 | page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC; | |
275 | case ttm_bo_type_kernel: | |
649bf3ca JG |
276 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, |
277 | page_flags, glob->dummy_read_page); | |
ba4e7d97 TH |
278 | if (unlikely(bo->ttm == NULL)) |
279 | ret = -ENOMEM; | |
280 | break; | |
129b78bf DA |
281 | case ttm_bo_type_sg: |
282 | bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, | |
283 | page_flags | TTM_PAGE_FLAG_SG, | |
284 | glob->dummy_read_page); | |
285 | if (unlikely(bo->ttm == NULL)) { | |
286 | ret = -ENOMEM; | |
287 | break; | |
288 | } | |
289 | bo->ttm->sg = bo->sg; | |
290 | break; | |
ba4e7d97 | 291 | default: |
25d0479a | 292 | pr_err("Illegal buffer object type\n"); |
ba4e7d97 TH |
293 | ret = -EINVAL; |
294 | break; | |
295 | } | |
296 | ||
297 | return ret; | |
298 | } | |
299 | ||
300 | static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo, | |
301 | struct ttm_mem_reg *mem, | |
9d87fa21 | 302 | bool evict, bool interruptible, |
97a875cb | 303 | bool no_wait_gpu) |
ba4e7d97 TH |
304 | { |
305 | struct ttm_bo_device *bdev = bo->bdev; | |
306 | bool old_is_pci = ttm_mem_reg_is_pci(bdev, &bo->mem); | |
307 | bool new_is_pci = ttm_mem_reg_is_pci(bdev, mem); | |
308 | struct ttm_mem_type_manager *old_man = &bdev->man[bo->mem.mem_type]; | |
309 | struct ttm_mem_type_manager *new_man = &bdev->man[mem->mem_type]; | |
310 | int ret = 0; | |
311 | ||
312 | if (old_is_pci || new_is_pci || | |
eba67093 TH |
313 | ((mem->placement & bo->mem.placement & TTM_PL_MASK_CACHING) == 0)) { |
314 | ret = ttm_mem_io_lock(old_man, true); | |
315 | if (unlikely(ret != 0)) | |
316 | goto out_err; | |
317 | ttm_bo_unmap_virtual_locked(bo); | |
318 | ttm_mem_io_unlock(old_man); | |
319 | } | |
ba4e7d97 TH |
320 | |
321 | /* | |
322 | * Create and bind a ttm if required. | |
323 | */ | |
324 | ||
8d3bb236 BS |
325 | if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) { |
326 | if (bo->ttm == NULL) { | |
ff02b13f BS |
327 | bool zero = !(old_man->flags & TTM_MEMTYPE_FLAG_FIXED); |
328 | ret = ttm_bo_add_ttm(bo, zero); | |
8d3bb236 BS |
329 | if (ret) |
330 | goto out_err; | |
331 | } | |
ba4e7d97 TH |
332 | |
333 | ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement); | |
334 | if (ret) | |
87ef9209 | 335 | goto out_err; |
ba4e7d97 TH |
336 | |
337 | if (mem->mem_type != TTM_PL_SYSTEM) { | |
338 | ret = ttm_tt_bind(bo->ttm, mem); | |
339 | if (ret) | |
340 | goto out_err; | |
341 | } | |
342 | ||
343 | if (bo->mem.mem_type == TTM_PL_SYSTEM) { | |
82ef594e BS |
344 | if (bdev->driver->move_notify) |
345 | bdev->driver->move_notify(bo, mem); | |
ca262a99 | 346 | bo->mem = *mem; |
ba4e7d97 | 347 | mem->mm_node = NULL; |
ba4e7d97 TH |
348 | goto moved; |
349 | } | |
ba4e7d97 TH |
350 | } |
351 | ||
9f1feed2 BS |
352 | if (bdev->driver->move_notify) |
353 | bdev->driver->move_notify(bo, mem); | |
354 | ||
ba4e7d97 TH |
355 | if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
356 | !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) | |
34b58355 MD |
357 | ret = ttm_bo_move_ttm(bo, evict, interruptible, no_wait_gpu, |
358 | 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 |
77dfc28b CK |
363 | ret = ttm_bo_move_memcpy(bo, evict, interruptible, |
364 | no_wait_gpu, mem); | |
ba4e7d97 | 365 | |
9f1feed2 BS |
366 | if (ret) { |
367 | if (bdev->driver->move_notify) { | |
368 | struct ttm_mem_reg tmp_mem = *mem; | |
369 | *mem = bo->mem; | |
370 | bo->mem = tmp_mem; | |
371 | bdev->driver->move_notify(bo, mem); | |
372 | bo->mem = *mem; | |
014b3440 | 373 | *mem = tmp_mem; |
9f1feed2 | 374 | } |
ba4e7d97 | 375 | |
9f1feed2 BS |
376 | goto out_err; |
377 | } | |
dc97b340 | 378 | |
ba4e7d97 TH |
379 | moved: |
380 | if (bo->evicted) { | |
9ef7506f RC |
381 | if (bdev->driver->invalidate_caches) { |
382 | ret = bdev->driver->invalidate_caches(bdev, bo->mem.placement); | |
383 | if (ret) | |
384 | pr_err("Can not flush read caches\n"); | |
385 | } | |
ba4e7d97 TH |
386 | bo->evicted = false; |
387 | } | |
388 | ||
389 | if (bo->mem.mm_node) { | |
d961db75 | 390 | bo->offset = (bo->mem.start << PAGE_SHIFT) + |
ba4e7d97 TH |
391 | bdev->man[bo->mem.mem_type].gpu_offset; |
392 | bo->cur_placement = bo->mem.placement; | |
354fb52c TH |
393 | } else |
394 | bo->offset = 0; | |
ba4e7d97 TH |
395 | |
396 | return 0; | |
397 | ||
398 | out_err: | |
399 | new_man = &bdev->man[bo->mem.mem_type]; | |
4279cb14 | 400 | if (new_man->flags & TTM_MEMTYPE_FLAG_FIXED) { |
ba4e7d97 TH |
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 | ||
4279cb14 CK |
421 | ttm_tt_destroy(bo->ttm); |
422 | bo->ttm = NULL; | |
40d857bb | 423 | ttm_bo_mem_put(bo, &bo->mem); |
1df6a2eb | 424 | |
5e338405 | 425 | ww_mutex_unlock (&bo->resv->lock); |
1df6a2eb TH |
426 | } |
427 | ||
f2c24b83 ML |
428 | static void ttm_bo_flush_all_fences(struct ttm_buffer_object *bo) |
429 | { | |
430 | struct reservation_object_list *fobj; | |
431 | struct fence *fence; | |
432 | int i; | |
433 | ||
434 | fobj = reservation_object_get_list(bo->resv); | |
435 | fence = reservation_object_get_excl(bo->resv); | |
436 | if (fence && !fence->ops->signaled) | |
437 | fence_enable_sw_signaling(fence); | |
438 | ||
439 | for (i = 0; fobj && i < fobj->shared_count; ++i) { | |
440 | fence = rcu_dereference_protected(fobj->shared[i], | |
441 | reservation_object_held(bo->resv)); | |
442 | ||
443 | if (!fence->ops->signaled) | |
444 | fence_enable_sw_signaling(fence); | |
445 | } | |
446 | } | |
447 | ||
e1efc9b6 | 448 | static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
449 | { |
450 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 451 | struct ttm_bo_global *glob = bo->glob; |
e1efc9b6 | 452 | int put_count; |
ba4e7d97 TH |
453 | int ret; |
454 | ||
4154f051 | 455 | spin_lock(&glob->lru_lock); |
dfd5e50e | 456 | ret = __ttm_bo_reserve(bo, false, true, NULL); |
4154f051 | 457 | |
dd7cfd64 | 458 | if (!ret) { |
8aa6d4fc | 459 | if (!ttm_bo_wait(bo, false, true)) { |
dd7cfd64 | 460 | put_count = ttm_bo_del_from_lru(bo); |
ba4e7d97 | 461 | |
dd7cfd64 ML |
462 | spin_unlock(&glob->lru_lock); |
463 | ttm_bo_cleanup_memtype_use(bo); | |
ba4e7d97 | 464 | |
dd7cfd64 | 465 | ttm_bo_list_ref_sub(bo, put_count, true); |
4154f051 | 466 | |
dd7cfd64 | 467 | return; |
f2c24b83 ML |
468 | } else |
469 | ttm_bo_flush_all_fences(bo); | |
15205fbc TH |
470 | |
471 | /* | |
472 | * Make NO_EVICT bos immediately available to | |
473 | * shrinkers, now that they are queued for | |
474 | * destruction. | |
475 | */ | |
476 | if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT) { | |
477 | bo->mem.placement &= ~TTM_PL_FLAG_NO_EVICT; | |
478 | ttm_bo_add_to_lru(bo); | |
479 | } | |
480 | ||
c7523083 | 481 | __ttm_bo_unreserve(bo); |
15205fbc | 482 | } |
e1efc9b6 TH |
483 | |
484 | kref_get(&bo->list_kref); | |
485 | list_add_tail(&bo->ddestroy, &bdev->ddestroy); | |
486 | spin_unlock(&glob->lru_lock); | |
e1efc9b6 | 487 | |
e1efc9b6 TH |
488 | schedule_delayed_work(&bdev->wq, |
489 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
490 | } | |
491 | ||
492 | /** | |
85b144f8 | 493 | * function ttm_bo_cleanup_refs_and_unlock |
e1efc9b6 TH |
494 | * If bo idle, remove from delayed- and lru lists, and unref. |
495 | * If not idle, do nothing. | |
496 | * | |
85b144f8 ML |
497 | * Must be called with lru_lock and reservation held, this function |
498 | * will drop both before returning. | |
499 | * | |
e1efc9b6 | 500 | * @interruptible Any sleeps should occur interruptibly. |
e1efc9b6 TH |
501 | * @no_wait_gpu Never wait for gpu. Return -EBUSY instead. |
502 | */ | |
503 | ||
85b144f8 ML |
504 | static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, |
505 | bool interruptible, | |
506 | bool no_wait_gpu) | |
e1efc9b6 TH |
507 | { |
508 | struct ttm_bo_global *glob = bo->glob; | |
509 | int put_count; | |
85b144f8 | 510 | int ret; |
e1efc9b6 | 511 | |
8aa6d4fc | 512 | ret = ttm_bo_wait(bo, false, true); |
e1efc9b6 | 513 | |
85b144f8 | 514 | if (ret && !no_wait_gpu) { |
472db7ab ML |
515 | long lret; |
516 | ww_mutex_unlock(&bo->resv->lock); | |
517 | spin_unlock(&glob->lru_lock); | |
518 | ||
519 | lret = reservation_object_wait_timeout_rcu(bo->resv, | |
520 | true, | |
521 | interruptible, | |
522 | 30 * HZ); | |
523 | ||
524 | if (lret < 0) | |
525 | return lret; | |
526 | else if (lret == 0) | |
527 | return -EBUSY; | |
b8e902f2 | 528 | |
85b144f8 | 529 | spin_lock(&glob->lru_lock); |
dfd5e50e | 530 | ret = __ttm_bo_reserve(bo, false, true, NULL); |
b8e902f2 | 531 | |
85b144f8 ML |
532 | /* |
533 | * We raced, and lost, someone else holds the reservation now, | |
534 | * and is probably busy in ttm_bo_cleanup_memtype_use. | |
535 | * | |
536 | * Even if it's not the case, because we finished waiting any | |
537 | * delayed destruction would succeed, so just return success | |
538 | * here. | |
539 | */ | |
540 | if (ret) { | |
541 | spin_unlock(&glob->lru_lock); | |
542 | return 0; | |
543 | } | |
7040138f ML |
544 | |
545 | /* | |
546 | * remove sync_obj with ttm_bo_wait, the wait should be | |
547 | * finished, and no new wait object should have been added. | |
548 | */ | |
8aa6d4fc | 549 | ret = ttm_bo_wait(bo, false, true); |
7040138f ML |
550 | WARN_ON(ret); |
551 | } | |
ba4e7d97 | 552 | |
85b144f8 | 553 | if (ret || unlikely(list_empty(&bo->ddestroy))) { |
c7523083 | 554 | __ttm_bo_unreserve(bo); |
a987fcaa | 555 | spin_unlock(&glob->lru_lock); |
85b144f8 | 556 | return ret; |
ba4e7d97 TH |
557 | } |
558 | ||
e1efc9b6 TH |
559 | put_count = ttm_bo_del_from_lru(bo); |
560 | list_del_init(&bo->ddestroy); | |
561 | ++put_count; | |
562 | ||
563 | spin_unlock(&glob->lru_lock); | |
564 | ttm_bo_cleanup_memtype_use(bo); | |
565 | ||
d6ea8886 | 566 | ttm_bo_list_ref_sub(bo, put_count, true); |
e1efc9b6 TH |
567 | |
568 | return 0; | |
ba4e7d97 TH |
569 | } |
570 | ||
571 | /** | |
572 | * Traverse the delayed list, and call ttm_bo_cleanup_refs on all | |
573 | * encountered buffers. | |
574 | */ | |
575 | ||
576 | static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) | |
577 | { | |
a987fcaa | 578 | struct ttm_bo_global *glob = bdev->glob; |
1a961ce0 LB |
579 | struct ttm_buffer_object *entry = NULL; |
580 | int ret = 0; | |
ba4e7d97 | 581 | |
a987fcaa | 582 | spin_lock(&glob->lru_lock); |
1a961ce0 LB |
583 | if (list_empty(&bdev->ddestroy)) |
584 | goto out_unlock; | |
585 | ||
586 | entry = list_first_entry(&bdev->ddestroy, | |
587 | struct ttm_buffer_object, ddestroy); | |
588 | kref_get(&entry->list_kref); | |
589 | ||
590 | for (;;) { | |
591 | struct ttm_buffer_object *nentry = NULL; | |
592 | ||
593 | if (entry->ddestroy.next != &bdev->ddestroy) { | |
594 | nentry = list_first_entry(&entry->ddestroy, | |
595 | struct ttm_buffer_object, ddestroy); | |
ba4e7d97 TH |
596 | kref_get(&nentry->list_kref); |
597 | } | |
ba4e7d97 | 598 | |
dfd5e50e | 599 | ret = __ttm_bo_reserve(entry, false, true, NULL); |
63d0a419 ML |
600 | if (remove_all && ret) { |
601 | spin_unlock(&glob->lru_lock); | |
dfd5e50e | 602 | ret = __ttm_bo_reserve(entry, false, false, NULL); |
63d0a419 ML |
603 | spin_lock(&glob->lru_lock); |
604 | } | |
605 | ||
85b144f8 ML |
606 | if (!ret) |
607 | ret = ttm_bo_cleanup_refs_and_unlock(entry, false, | |
608 | !remove_all); | |
609 | else | |
610 | spin_unlock(&glob->lru_lock); | |
611 | ||
ba4e7d97 | 612 | kref_put(&entry->list_kref, ttm_bo_release_list); |
1a961ce0 LB |
613 | entry = nentry; |
614 | ||
615 | if (ret || !entry) | |
616 | goto out; | |
ba4e7d97 | 617 | |
a987fcaa | 618 | spin_lock(&glob->lru_lock); |
1a961ce0 | 619 | if (list_empty(&entry->ddestroy)) |
ba4e7d97 TH |
620 | break; |
621 | } | |
ba4e7d97 | 622 | |
1a961ce0 LB |
623 | out_unlock: |
624 | spin_unlock(&glob->lru_lock); | |
625 | out: | |
626 | if (entry) | |
627 | kref_put(&entry->list_kref, ttm_bo_release_list); | |
ba4e7d97 TH |
628 | return ret; |
629 | } | |
630 | ||
631 | static void ttm_bo_delayed_workqueue(struct work_struct *work) | |
632 | { | |
633 | struct ttm_bo_device *bdev = | |
634 | container_of(work, struct ttm_bo_device, wq.work); | |
635 | ||
636 | if (ttm_bo_delayed_delete(bdev, false)) { | |
637 | schedule_delayed_work(&bdev->wq, | |
638 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
639 | } | |
640 | } | |
641 | ||
642 | static void ttm_bo_release(struct kref *kref) | |
643 | { | |
644 | struct ttm_buffer_object *bo = | |
645 | container_of(kref, struct ttm_buffer_object, kref); | |
646 | struct ttm_bo_device *bdev = bo->bdev; | |
eba67093 | 647 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; |
ba4e7d97 | 648 | |
72525b3f | 649 | drm_vma_offset_remove(&bdev->vma_manager, &bo->vma_node); |
eba67093 TH |
650 | ttm_mem_io_lock(man, false); |
651 | ttm_mem_io_free_vm(bo); | |
652 | ttm_mem_io_unlock(man); | |
e1efc9b6 | 653 | ttm_bo_cleanup_refs_or_queue(bo); |
ba4e7d97 | 654 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
655 | } |
656 | ||
657 | void ttm_bo_unref(struct ttm_buffer_object **p_bo) | |
658 | { | |
659 | struct ttm_buffer_object *bo = *p_bo; | |
ba4e7d97 TH |
660 | |
661 | *p_bo = NULL; | |
ba4e7d97 | 662 | kref_put(&bo->kref, ttm_bo_release); |
ba4e7d97 TH |
663 | } |
664 | EXPORT_SYMBOL(ttm_bo_unref); | |
665 | ||
7c5ee536 MG |
666 | int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev) |
667 | { | |
668 | return cancel_delayed_work_sync(&bdev->wq); | |
669 | } | |
670 | EXPORT_SYMBOL(ttm_bo_lock_delayed_workqueue); | |
671 | ||
672 | void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched) | |
673 | { | |
674 | if (resched) | |
675 | schedule_delayed_work(&bdev->wq, | |
676 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
677 | } | |
678 | EXPORT_SYMBOL(ttm_bo_unlock_delayed_workqueue); | |
679 | ||
ca262a99 | 680 | static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible, |
97a875cb | 681 | bool no_wait_gpu) |
ba4e7d97 | 682 | { |
ba4e7d97 TH |
683 | struct ttm_bo_device *bdev = bo->bdev; |
684 | struct ttm_mem_reg evict_mem; | |
ca262a99 JG |
685 | struct ttm_placement placement; |
686 | int ret = 0; | |
ba4e7d97 | 687 | |
009a9dad | 688 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
689 | |
690 | evict_mem = bo->mem; | |
691 | evict_mem.mm_node = NULL; | |
eba67093 TH |
692 | evict_mem.bus.io_reserved_vm = false; |
693 | evict_mem.bus.io_reserved_count = 0; | |
ba4e7d97 | 694 | |
7cb7d1d7 JG |
695 | placement.num_placement = 0; |
696 | placement.num_busy_placement = 0; | |
ca262a99 JG |
697 | bdev->driver->evict_flags(bo, &placement); |
698 | ret = ttm_bo_mem_space(bo, &placement, &evict_mem, interruptible, | |
97a875cb | 699 | no_wait_gpu); |
ba4e7d97 | 700 | if (ret) { |
fb53f862 | 701 | if (ret != -ERESTARTSYS) { |
25d0479a JP |
702 | pr_err("Failed to find memory space for buffer 0x%p eviction\n", |
703 | bo); | |
fb53f862 JG |
704 | ttm_bo_mem_space_debug(bo, &placement); |
705 | } | |
ba4e7d97 TH |
706 | goto out; |
707 | } | |
708 | ||
709 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, interruptible, | |
97a875cb | 710 | no_wait_gpu); |
17d33bc9 | 711 | if (unlikely(ret)) { |
98ffc415 | 712 | if (ret != -ERESTARTSYS) |
25d0479a | 713 | pr_err("Buffer eviction failed\n"); |
42311ff9 | 714 | ttm_bo_mem_put(bo, &evict_mem); |
ba4e7d97 TH |
715 | goto out; |
716 | } | |
ca262a99 JG |
717 | bo->evicted = true; |
718 | out: | |
719 | return ret; | |
720 | } | |
721 | ||
722 | static int ttm_mem_evict_first(struct ttm_bo_device *bdev, | |
723 | uint32_t mem_type, | |
e300180f | 724 | const struct ttm_place *place, |
97a875cb | 725 | bool interruptible, |
9d87fa21 | 726 | bool no_wait_gpu) |
ca262a99 JG |
727 | { |
728 | struct ttm_bo_global *glob = bdev->glob; | |
729 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
730 | struct ttm_buffer_object *bo; | |
e7ab2019 | 731 | int ret = -EBUSY, put_count; |
ba4e7d97 | 732 | |
a987fcaa | 733 | spin_lock(&glob->lru_lock); |
e7ab2019 | 734 | list_for_each_entry(bo, &man->lru, lru) { |
dfd5e50e | 735 | ret = __ttm_bo_reserve(bo, false, true, NULL); |
e300180f MD |
736 | if (!ret) { |
737 | if (place && (place->fpfn || place->lpfn)) { | |
738 | /* Don't evict this BO if it's outside of the | |
739 | * requested placement range | |
740 | */ | |
741 | if (place->fpfn >= (bo->mem.start + bo->mem.size) || | |
742 | (place->lpfn && place->lpfn <= bo->mem.start)) { | |
743 | __ttm_bo_unreserve(bo); | |
744 | ret = -EBUSY; | |
745 | continue; | |
746 | } | |
747 | } | |
748 | ||
e7ab2019 | 749 | break; |
e300180f | 750 | } |
e7ab2019 ML |
751 | } |
752 | ||
753 | if (ret) { | |
9c51ba1d | 754 | spin_unlock(&glob->lru_lock); |
e7ab2019 | 755 | return ret; |
9c51ba1d TH |
756 | } |
757 | ||
ca262a99 | 758 | kref_get(&bo->list_kref); |
9c51ba1d | 759 | |
e1efc9b6 | 760 | if (!list_empty(&bo->ddestroy)) { |
e7ab2019 ML |
761 | ret = ttm_bo_cleanup_refs_and_unlock(bo, interruptible, |
762 | no_wait_gpu); | |
e1efc9b6 | 763 | kref_put(&bo->list_kref, ttm_bo_release_list); |
b8e902f2 | 764 | return ret; |
e1efc9b6 TH |
765 | } |
766 | ||
9c51ba1d | 767 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 768 | spin_unlock(&glob->lru_lock); |
9c51ba1d TH |
769 | |
770 | BUG_ON(ret != 0); | |
771 | ||
d6ea8886 | 772 | ttm_bo_list_ref_sub(bo, put_count, true); |
9c51ba1d | 773 | |
97a875cb | 774 | ret = ttm_bo_evict(bo, interruptible, no_wait_gpu); |
ca262a99 | 775 | ttm_bo_unreserve(bo); |
9c51ba1d | 776 | |
ca262a99 | 777 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
778 | return ret; |
779 | } | |
780 | ||
42311ff9 BS |
781 | void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem) |
782 | { | |
d961db75 | 783 | struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type]; |
42311ff9 | 784 | |
d961db75 BS |
785 | if (mem->mm_node) |
786 | (*man->func->put_node)(man, mem); | |
42311ff9 BS |
787 | } |
788 | EXPORT_SYMBOL(ttm_bo_mem_put); | |
789 | ||
3ddf4ad9 CK |
790 | /** |
791 | * Add the last move fence to the BO and reserve a new shared slot. | |
792 | */ | |
793 | static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo, | |
794 | struct ttm_mem_type_manager *man, | |
795 | struct ttm_mem_reg *mem) | |
796 | { | |
797 | struct fence *fence; | |
798 | int ret; | |
799 | ||
800 | spin_lock(&man->move_lock); | |
801 | fence = fence_get(man->move); | |
802 | spin_unlock(&man->move_lock); | |
803 | ||
804 | if (fence) { | |
805 | reservation_object_add_shared_fence(bo->resv, fence); | |
806 | ||
807 | ret = reservation_object_reserve_shared(bo->resv); | |
808 | if (unlikely(ret)) | |
809 | return ret; | |
810 | ||
811 | fence_put(bo->moving); | |
812 | bo->moving = fence; | |
813 | } | |
814 | ||
815 | return 0; | |
816 | } | |
817 | ||
ba4e7d97 TH |
818 | /** |
819 | * Repeatedly evict memory from the LRU for @mem_type until we create enough | |
820 | * space, or we've evicted everything and there isn't enough space. | |
821 | */ | |
ca262a99 JG |
822 | static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, |
823 | uint32_t mem_type, | |
f1217ed0 | 824 | const struct ttm_place *place, |
ca262a99 | 825 | struct ttm_mem_reg *mem, |
9d87fa21 | 826 | bool interruptible, |
9d87fa21 | 827 | bool no_wait_gpu) |
ba4e7d97 | 828 | { |
ca262a99 | 829 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 | 830 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
ba4e7d97 TH |
831 | int ret; |
832 | ||
ba4e7d97 | 833 | do { |
f1217ed0 | 834 | ret = (*man->func->get_node)(man, bo, place, mem); |
ca262a99 JG |
835 | if (unlikely(ret != 0)) |
836 | return ret; | |
d961db75 | 837 | if (mem->mm_node) |
ba4e7d97 | 838 | break; |
e300180f | 839 | ret = ttm_mem_evict_first(bdev, mem_type, place, |
97a875cb | 840 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
841 | if (unlikely(ret != 0)) |
842 | return ret; | |
ba4e7d97 | 843 | } while (1); |
ba4e7d97 | 844 | mem->mem_type = mem_type; |
3ddf4ad9 | 845 | return ttm_bo_add_move_fence(bo, man, mem); |
ba4e7d97 TH |
846 | } |
847 | ||
ae3e8122 TH |
848 | static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man, |
849 | uint32_t cur_placement, | |
850 | uint32_t proposed_placement) | |
851 | { | |
852 | uint32_t caching = proposed_placement & TTM_PL_MASK_CACHING; | |
853 | uint32_t result = proposed_placement & ~TTM_PL_MASK_CACHING; | |
854 | ||
855 | /** | |
856 | * Keep current caching if possible. | |
857 | */ | |
858 | ||
859 | if ((cur_placement & caching) != 0) | |
860 | result |= (cur_placement & caching); | |
861 | else if ((man->default_caching & caching) != 0) | |
862 | result |= man->default_caching; | |
863 | else if ((TTM_PL_FLAG_CACHED & caching) != 0) | |
864 | result |= TTM_PL_FLAG_CACHED; | |
865 | else if ((TTM_PL_FLAG_WC & caching) != 0) | |
866 | result |= TTM_PL_FLAG_WC; | |
867 | else if ((TTM_PL_FLAG_UNCACHED & caching) != 0) | |
868 | result |= TTM_PL_FLAG_UNCACHED; | |
869 | ||
870 | return result; | |
871 | } | |
872 | ||
ba4e7d97 | 873 | static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man, |
ba4e7d97 | 874 | uint32_t mem_type, |
f1217ed0 | 875 | const struct ttm_place *place, |
ae3e8122 | 876 | uint32_t *masked_placement) |
ba4e7d97 TH |
877 | { |
878 | uint32_t cur_flags = ttm_bo_type_flags(mem_type); | |
879 | ||
f1217ed0 | 880 | if ((cur_flags & place->flags & TTM_PL_MASK_MEM) == 0) |
ba4e7d97 TH |
881 | return false; |
882 | ||
f1217ed0 | 883 | if ((place->flags & man->available_caching) == 0) |
ba4e7d97 | 884 | return false; |
ba4e7d97 | 885 | |
f1217ed0 | 886 | cur_flags |= (place->flags & man->available_caching); |
ae3e8122 TH |
887 | |
888 | *masked_placement = cur_flags; | |
ba4e7d97 TH |
889 | return true; |
890 | } | |
891 | ||
892 | /** | |
893 | * Creates space for memory region @mem according to its type. | |
894 | * | |
895 | * This function first searches for free space in compatible memory types in | |
896 | * the priority order defined by the driver. If free space isn't found, then | |
897 | * ttm_bo_mem_force_space is attempted in priority order to evict and find | |
898 | * space. | |
899 | */ | |
900 | int ttm_bo_mem_space(struct ttm_buffer_object *bo, | |
ca262a99 JG |
901 | struct ttm_placement *placement, |
902 | struct ttm_mem_reg *mem, | |
97a875cb | 903 | bool interruptible, |
9d87fa21 | 904 | bool no_wait_gpu) |
ba4e7d97 TH |
905 | { |
906 | struct ttm_bo_device *bdev = bo->bdev; | |
907 | struct ttm_mem_type_manager *man; | |
ba4e7d97 TH |
908 | uint32_t mem_type = TTM_PL_SYSTEM; |
909 | uint32_t cur_flags = 0; | |
910 | bool type_found = false; | |
911 | bool type_ok = false; | |
98ffc415 | 912 | bool has_erestartsys = false; |
ca262a99 | 913 | int i, ret; |
ba4e7d97 | 914 | |
3ddf4ad9 CK |
915 | ret = reservation_object_reserve_shared(bo->resv); |
916 | if (unlikely(ret)) | |
917 | return ret; | |
918 | ||
ba4e7d97 | 919 | mem->mm_node = NULL; |
b6637526 | 920 | for (i = 0; i < placement->num_placement; ++i) { |
f1217ed0 CK |
921 | const struct ttm_place *place = &placement->placement[i]; |
922 | ||
923 | ret = ttm_mem_type_from_place(place, &mem_type); | |
ca262a99 JG |
924 | if (ret) |
925 | return ret; | |
ba4e7d97 | 926 | man = &bdev->man[mem_type]; |
e30f3963 TH |
927 | if (!man->has_type || !man->use_type) |
928 | continue; | |
ba4e7d97 | 929 | |
f1217ed0 | 930 | type_ok = ttm_bo_mt_compatible(man, mem_type, place, |
ca262a99 | 931 | &cur_flags); |
ba4e7d97 TH |
932 | |
933 | if (!type_ok) | |
934 | continue; | |
935 | ||
e30f3963 | 936 | type_found = true; |
ae3e8122 TH |
937 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
938 | cur_flags); | |
ca262a99 JG |
939 | /* |
940 | * Use the access and other non-mapping-related flag bits from | |
941 | * the memory placement flags to the current flags | |
942 | */ | |
f1217ed0 | 943 | ttm_flag_masked(&cur_flags, place->flags, |
ca262a99 | 944 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 945 | |
ba4e7d97 TH |
946 | if (mem_type == TTM_PL_SYSTEM) |
947 | break; | |
948 | ||
e30f3963 TH |
949 | ret = (*man->func->get_node)(man, bo, place, mem); |
950 | if (unlikely(ret)) | |
951 | return ret; | |
3ddf4ad9 CK |
952 | |
953 | if (mem->mm_node) { | |
954 | ret = ttm_bo_add_move_fence(bo, man, mem); | |
955 | if (unlikely(ret)) { | |
956 | (*man->func->put_node)(man, mem); | |
957 | return ret; | |
958 | } | |
ba4e7d97 | 959 | break; |
3ddf4ad9 | 960 | } |
ba4e7d97 TH |
961 | } |
962 | ||
d961db75 | 963 | if ((type_ok && (mem_type == TTM_PL_SYSTEM)) || mem->mm_node) { |
ba4e7d97 TH |
964 | mem->mem_type = mem_type; |
965 | mem->placement = cur_flags; | |
966 | return 0; | |
967 | } | |
968 | ||
b6637526 | 969 | for (i = 0; i < placement->num_busy_placement; ++i) { |
f1217ed0 CK |
970 | const struct ttm_place *place = &placement->busy_placement[i]; |
971 | ||
972 | ret = ttm_mem_type_from_place(place, &mem_type); | |
ca262a99 JG |
973 | if (ret) |
974 | return ret; | |
ba4e7d97 | 975 | man = &bdev->man[mem_type]; |
e30f3963 | 976 | if (!man->has_type || !man->use_type) |
ba4e7d97 | 977 | continue; |
f1217ed0 | 978 | if (!ttm_bo_mt_compatible(man, mem_type, place, &cur_flags)) |
ba4e7d97 TH |
979 | continue; |
980 | ||
e30f3963 | 981 | type_found = true; |
ae3e8122 TH |
982 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
983 | cur_flags); | |
ca262a99 JG |
984 | /* |
985 | * Use the access and other non-mapping-related flag bits from | |
986 | * the memory placement flags to the current flags | |
987 | */ | |
f1217ed0 | 988 | ttm_flag_masked(&cur_flags, place->flags, |
ca262a99 | 989 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 990 | |
0eaddb28 TH |
991 | if (mem_type == TTM_PL_SYSTEM) { |
992 | mem->mem_type = mem_type; | |
993 | mem->placement = cur_flags; | |
994 | mem->mm_node = NULL; | |
995 | return 0; | |
996 | } | |
997 | ||
f1217ed0 | 998 | ret = ttm_bo_mem_force_space(bo, mem_type, place, mem, |
97a875cb | 999 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
1000 | if (ret == 0 && mem->mm_node) { |
1001 | mem->placement = cur_flags; | |
1002 | return 0; | |
1003 | } | |
98ffc415 TH |
1004 | if (ret == -ERESTARTSYS) |
1005 | has_erestartsys = true; | |
ba4e7d97 | 1006 | } |
e30f3963 TH |
1007 | |
1008 | if (!type_found) { | |
1009 | printk(KERN_ERR TTM_PFX "No compatible memory type found.\n"); | |
1010 | return -EINVAL; | |
1011 | } | |
1012 | ||
1013 | return (has_erestartsys) ? -ERESTARTSYS : -ENOMEM; | |
ba4e7d97 TH |
1014 | } |
1015 | EXPORT_SYMBOL(ttm_bo_mem_space); | |
1016 | ||
6e87fa48 | 1017 | static int ttm_bo_move_buffer(struct ttm_buffer_object *bo, |
ca262a99 | 1018 | struct ttm_placement *placement, |
97a875cb | 1019 | bool interruptible, |
9d87fa21 | 1020 | bool no_wait_gpu) |
ba4e7d97 | 1021 | { |
ba4e7d97 TH |
1022 | int ret = 0; |
1023 | struct ttm_mem_reg mem; | |
1024 | ||
009a9dad | 1025 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 | 1026 | |
ba4e7d97 TH |
1027 | mem.num_pages = bo->num_pages; |
1028 | mem.size = mem.num_pages << PAGE_SHIFT; | |
1029 | mem.page_alignment = bo->mem.page_alignment; | |
eba67093 TH |
1030 | mem.bus.io_reserved_vm = false; |
1031 | mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
1032 | /* |
1033 | * Determine where to move the buffer. | |
1034 | */ | |
97a875cb ML |
1035 | ret = ttm_bo_mem_space(bo, placement, &mem, |
1036 | interruptible, no_wait_gpu); | |
ba4e7d97 TH |
1037 | if (ret) |
1038 | goto out_unlock; | |
97a875cb ML |
1039 | ret = ttm_bo_handle_move_mem(bo, &mem, false, |
1040 | interruptible, no_wait_gpu); | |
ba4e7d97 | 1041 | out_unlock: |
d961db75 BS |
1042 | if (ret && mem.mm_node) |
1043 | ttm_bo_mem_put(bo, &mem); | |
ba4e7d97 TH |
1044 | return ret; |
1045 | } | |
1046 | ||
94477bff SY |
1047 | bool ttm_bo_mem_compat(struct ttm_placement *placement, |
1048 | struct ttm_mem_reg *mem, | |
1049 | uint32_t *new_flags) | |
ba4e7d97 | 1050 | { |
ca262a99 | 1051 | int i; |
e22238ea | 1052 | |
ca262a99 | 1053 | for (i = 0; i < placement->num_placement; i++) { |
f1217ed0 | 1054 | const struct ttm_place *heap = &placement->placement[i]; |
9ace2ef7 | 1055 | if (mem->mm_node && |
f1217ed0 | 1056 | (mem->start < heap->fpfn || |
9ace2ef7 | 1057 | (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) |
f1217ed0 CK |
1058 | continue; |
1059 | ||
1060 | *new_flags = heap->flags; | |
59c8e663 TH |
1061 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && |
1062 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1063 | return true; | |
1064 | } | |
1065 | ||
1066 | for (i = 0; i < placement->num_busy_placement; i++) { | |
f1217ed0 | 1067 | const struct ttm_place *heap = &placement->busy_placement[i]; |
9ace2ef7 | 1068 | if (mem->mm_node && |
f1217ed0 | 1069 | (mem->start < heap->fpfn || |
9ace2ef7 | 1070 | (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) |
f1217ed0 CK |
1071 | continue; |
1072 | ||
1073 | *new_flags = heap->flags; | |
59c8e663 TH |
1074 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && |
1075 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1076 | return true; | |
ca262a99 | 1077 | } |
59c8e663 TH |
1078 | |
1079 | return false; | |
ba4e7d97 | 1080 | } |
94477bff | 1081 | EXPORT_SYMBOL(ttm_bo_mem_compat); |
ba4e7d97 | 1082 | |
09855acb JG |
1083 | int ttm_bo_validate(struct ttm_buffer_object *bo, |
1084 | struct ttm_placement *placement, | |
97a875cb | 1085 | bool interruptible, |
9d87fa21 | 1086 | bool no_wait_gpu) |
ba4e7d97 TH |
1087 | { |
1088 | int ret; | |
59c8e663 | 1089 | uint32_t new_flags; |
ba4e7d97 | 1090 | |
009a9dad | 1091 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
1092 | /* |
1093 | * Check whether we need to move buffer. | |
1094 | */ | |
59c8e663 | 1095 | if (!ttm_bo_mem_compat(placement, &bo->mem, &new_flags)) { |
97a875cb ML |
1096 | ret = ttm_bo_move_buffer(bo, placement, interruptible, |
1097 | no_wait_gpu); | |
ca262a99 | 1098 | if (ret) |
ba4e7d97 | 1099 | return ret; |
ca262a99 JG |
1100 | } else { |
1101 | /* | |
1102 | * Use the access and other non-mapping-related flag bits from | |
1103 | * the compatible memory placement flags to the active flags | |
1104 | */ | |
59c8e663 | 1105 | ttm_flag_masked(&bo->mem.placement, new_flags, |
ca262a99 | 1106 | ~TTM_PL_MASK_MEMTYPE); |
ba4e7d97 | 1107 | } |
ba4e7d97 TH |
1108 | /* |
1109 | * We might need to add a TTM. | |
1110 | */ | |
ba4e7d97 TH |
1111 | if (bo->mem.mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { |
1112 | ret = ttm_bo_add_ttm(bo, true); | |
1113 | if (ret) | |
1114 | return ret; | |
1115 | } | |
ba4e7d97 TH |
1116 | return 0; |
1117 | } | |
09855acb | 1118 | EXPORT_SYMBOL(ttm_bo_validate); |
ba4e7d97 | 1119 | |
09855acb JG |
1120 | int ttm_bo_init(struct ttm_bo_device *bdev, |
1121 | struct ttm_buffer_object *bo, | |
1122 | unsigned long size, | |
1123 | enum ttm_bo_type type, | |
1124 | struct ttm_placement *placement, | |
1125 | uint32_t page_alignment, | |
09855acb | 1126 | bool interruptible, |
5df23979 | 1127 | struct file *persistent_swap_storage, |
09855acb | 1128 | size_t acc_size, |
129b78bf | 1129 | struct sg_table *sg, |
f4f4e3e3 | 1130 | struct reservation_object *resv, |
09855acb | 1131 | void (*destroy) (struct ttm_buffer_object *)) |
ba4e7d97 | 1132 | { |
09855acb | 1133 | int ret = 0; |
ba4e7d97 | 1134 | unsigned long num_pages; |
57de4ba9 | 1135 | struct ttm_mem_global *mem_glob = bdev->glob->mem_glob; |
5e338405 | 1136 | bool locked; |
57de4ba9 JG |
1137 | |
1138 | ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false); | |
1139 | if (ret) { | |
25d0479a | 1140 | pr_err("Out of kernel memory\n"); |
57de4ba9 JG |
1141 | if (destroy) |
1142 | (*destroy)(bo); | |
1143 | else | |
1144 | kfree(bo); | |
1145 | return -ENOMEM; | |
1146 | } | |
ba4e7d97 | 1147 | |
ba4e7d97 TH |
1148 | num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; |
1149 | if (num_pages == 0) { | |
25d0479a | 1150 | pr_err("Illegal buffer object size\n"); |
7dfbbdcf TH |
1151 | if (destroy) |
1152 | (*destroy)(bo); | |
1153 | else | |
1154 | kfree(bo); | |
a393c730 | 1155 | ttm_mem_global_free(mem_glob, acc_size); |
ba4e7d97 TH |
1156 | return -EINVAL; |
1157 | } | |
1158 | bo->destroy = destroy; | |
1159 | ||
ba4e7d97 TH |
1160 | kref_init(&bo->kref); |
1161 | kref_init(&bo->list_kref); | |
1162 | atomic_set(&bo->cpu_writers, 0); | |
ba4e7d97 TH |
1163 | INIT_LIST_HEAD(&bo->lru); |
1164 | INIT_LIST_HEAD(&bo->ddestroy); | |
1165 | INIT_LIST_HEAD(&bo->swap); | |
eba67093 | 1166 | INIT_LIST_HEAD(&bo->io_reserve_lru); |
c58f009e | 1167 | mutex_init(&bo->wu_mutex); |
ba4e7d97 | 1168 | bo->bdev = bdev; |
a987fcaa | 1169 | bo->glob = bdev->glob; |
ba4e7d97 TH |
1170 | bo->type = type; |
1171 | bo->num_pages = num_pages; | |
eb6d2c39 | 1172 | bo->mem.size = num_pages << PAGE_SHIFT; |
ba4e7d97 TH |
1173 | bo->mem.mem_type = TTM_PL_SYSTEM; |
1174 | bo->mem.num_pages = bo->num_pages; | |
1175 | bo->mem.mm_node = NULL; | |
1176 | bo->mem.page_alignment = page_alignment; | |
eba67093 TH |
1177 | bo->mem.bus.io_reserved_vm = false; |
1178 | bo->mem.bus.io_reserved_count = 0; | |
5bc73067 | 1179 | bo->moving = NULL; |
ba4e7d97 | 1180 | bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED); |
5df23979 | 1181 | bo->persistent_swap_storage = persistent_swap_storage; |
ba4e7d97 | 1182 | bo->acc_size = acc_size; |
129b78bf | 1183 | bo->sg = sg; |
f4f4e3e3 ML |
1184 | if (resv) { |
1185 | bo->resv = resv; | |
1186 | lockdep_assert_held(&bo->resv->lock.base); | |
1187 | } else { | |
1188 | bo->resv = &bo->ttm_resv; | |
1189 | reservation_object_init(&bo->ttm_resv); | |
1190 | } | |
a987fcaa | 1191 | atomic_inc(&bo->glob->bo_count); |
72525b3f | 1192 | drm_vma_node_reset(&bo->vma_node); |
ba4e7d97 | 1193 | |
ba4e7d97 TH |
1194 | /* |
1195 | * For ttm_bo_type_device buffers, allocate | |
1196 | * address space from the device. | |
1197 | */ | |
f1217ed0 CK |
1198 | if (bo->type == ttm_bo_type_device || |
1199 | bo->type == ttm_bo_type_sg) | |
abf19035 DH |
1200 | ret = drm_vma_offset_add(&bdev->vma_manager, &bo->vma_node, |
1201 | bo->mem.num_pages); | |
ba4e7d97 | 1202 | |
f4f4e3e3 ML |
1203 | /* passed reservation objects should already be locked, |
1204 | * since otherwise lockdep will be angered in radeon. | |
1205 | */ | |
1206 | if (!resv) { | |
1207 | locked = ww_mutex_trylock(&bo->resv->lock); | |
1208 | WARN_ON(!locked); | |
1209 | } | |
ba4e7d97 | 1210 | |
5e338405 ML |
1211 | if (likely(!ret)) |
1212 | ret = ttm_bo_validate(bo, placement, interruptible, false); | |
ba4e7d97 | 1213 | |
33d48cf8 | 1214 | if (!resv) { |
f4f4e3e3 | 1215 | ttm_bo_unreserve(bo); |
5e338405 | 1216 | |
33d48cf8 CK |
1217 | } else if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { |
1218 | spin_lock(&bo->glob->lru_lock); | |
1219 | ttm_bo_add_to_lru(bo); | |
1220 | spin_unlock(&bo->glob->lru_lock); | |
1221 | } | |
1222 | ||
5e338405 ML |
1223 | if (unlikely(ret)) |
1224 | ttm_bo_unref(&bo); | |
ba4e7d97 TH |
1225 | |
1226 | return ret; | |
1227 | } | |
09855acb | 1228 | EXPORT_SYMBOL(ttm_bo_init); |
ba4e7d97 | 1229 | |
57de4ba9 JG |
1230 | size_t ttm_bo_acc_size(struct ttm_bo_device *bdev, |
1231 | unsigned long bo_size, | |
1232 | unsigned struct_size) | |
ba4e7d97 | 1233 | { |
57de4ba9 JG |
1234 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; |
1235 | size_t size = 0; | |
ba4e7d97 | 1236 | |
57de4ba9 | 1237 | size += ttm_round_pot(struct_size); |
85621630 | 1238 | size += ttm_round_pot(npages * sizeof(void *)); |
57de4ba9 JG |
1239 | size += ttm_round_pot(sizeof(struct ttm_tt)); |
1240 | return size; | |
ba4e7d97 | 1241 | } |
57de4ba9 JG |
1242 | EXPORT_SYMBOL(ttm_bo_acc_size); |
1243 | ||
1244 | size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev, | |
1245 | unsigned long bo_size, | |
1246 | unsigned struct_size) | |
1247 | { | |
1248 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; | |
1249 | size_t size = 0; | |
1250 | ||
1251 | size += ttm_round_pot(struct_size); | |
85621630 | 1252 | size += ttm_round_pot(npages * (2*sizeof(void *) + sizeof(dma_addr_t))); |
57de4ba9 JG |
1253 | size += ttm_round_pot(sizeof(struct ttm_dma_tt)); |
1254 | return size; | |
1255 | } | |
1256 | EXPORT_SYMBOL(ttm_bo_dma_acc_size); | |
ba4e7d97 | 1257 | |
09855acb JG |
1258 | int ttm_bo_create(struct ttm_bo_device *bdev, |
1259 | unsigned long size, | |
1260 | enum ttm_bo_type type, | |
1261 | struct ttm_placement *placement, | |
1262 | uint32_t page_alignment, | |
09855acb | 1263 | bool interruptible, |
5df23979 | 1264 | struct file *persistent_swap_storage, |
09855acb | 1265 | struct ttm_buffer_object **p_bo) |
ba4e7d97 TH |
1266 | { |
1267 | struct ttm_buffer_object *bo; | |
57de4ba9 | 1268 | size_t acc_size; |
ca262a99 | 1269 | int ret; |
ba4e7d97 | 1270 | |
ba4e7d97 | 1271 | bo = kzalloc(sizeof(*bo), GFP_KERNEL); |
a393c730 | 1272 | if (unlikely(bo == NULL)) |
ba4e7d97 | 1273 | return -ENOMEM; |
ba4e7d97 | 1274 | |
a393c730 | 1275 | acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct ttm_buffer_object)); |
09855acb | 1276 | ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment, |
0b91c4a1 | 1277 | interruptible, persistent_swap_storage, acc_size, |
f4f4e3e3 | 1278 | NULL, NULL, NULL); |
ba4e7d97 TH |
1279 | if (likely(ret == 0)) |
1280 | *p_bo = bo; | |
1281 | ||
1282 | return ret; | |
1283 | } | |
4d798937 | 1284 | EXPORT_SYMBOL(ttm_bo_create); |
ba4e7d97 | 1285 | |
ba4e7d97 | 1286 | static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, |
ca262a99 | 1287 | unsigned mem_type, bool allow_errors) |
ba4e7d97 | 1288 | { |
ca262a99 | 1289 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
a987fcaa | 1290 | struct ttm_bo_global *glob = bdev->glob; |
aff98ba1 | 1291 | struct fence *fence; |
ba4e7d97 | 1292 | int ret; |
ba4e7d97 TH |
1293 | |
1294 | /* | |
1295 | * Can't use standard list traversal since we're unlocking. | |
1296 | */ | |
1297 | ||
a987fcaa | 1298 | spin_lock(&glob->lru_lock); |
ca262a99 | 1299 | while (!list_empty(&man->lru)) { |
a987fcaa | 1300 | spin_unlock(&glob->lru_lock); |
e300180f | 1301 | ret = ttm_mem_evict_first(bdev, mem_type, NULL, false, false); |
ca262a99 JG |
1302 | if (ret) { |
1303 | if (allow_errors) { | |
1304 | return ret; | |
1305 | } else { | |
25d0479a | 1306 | pr_err("Cleanup eviction failed\n"); |
ca262a99 JG |
1307 | } |
1308 | } | |
a987fcaa | 1309 | spin_lock(&glob->lru_lock); |
ba4e7d97 | 1310 | } |
a987fcaa | 1311 | spin_unlock(&glob->lru_lock); |
aff98ba1 CK |
1312 | |
1313 | spin_lock(&man->move_lock); | |
1314 | fence = fence_get(man->move); | |
1315 | spin_unlock(&man->move_lock); | |
1316 | ||
1317 | if (fence) { | |
1318 | ret = fence_wait(fence, false); | |
1319 | fence_put(fence); | |
1320 | if (ret) { | |
1321 | if (allow_errors) { | |
1322 | return ret; | |
1323 | } else { | |
1324 | pr_err("Cleanup eviction failed\n"); | |
1325 | } | |
1326 | } | |
1327 | } | |
1328 | ||
ba4e7d97 TH |
1329 | return 0; |
1330 | } | |
1331 | ||
1332 | int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1333 | { | |
c96e7c7a | 1334 | struct ttm_mem_type_manager *man; |
ba4e7d97 TH |
1335 | int ret = -EINVAL; |
1336 | ||
1337 | if (mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1338 | pr_err("Illegal memory type %d\n", mem_type); |
ba4e7d97 TH |
1339 | return ret; |
1340 | } | |
c96e7c7a | 1341 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
1342 | |
1343 | if (!man->has_type) { | |
25d0479a JP |
1344 | pr_err("Trying to take down uninitialized memory manager type %u\n", |
1345 | mem_type); | |
ba4e7d97 TH |
1346 | return ret; |
1347 | } | |
3ddf4ad9 | 1348 | fence_put(man->move); |
ba4e7d97 TH |
1349 | |
1350 | man->use_type = false; | |
1351 | man->has_type = false; | |
1352 | ||
1353 | ret = 0; | |
1354 | if (mem_type > 0) { | |
ca262a99 | 1355 | ttm_bo_force_list_clean(bdev, mem_type, false); |
ba4e7d97 | 1356 | |
d961db75 | 1357 | ret = (*man->func->takedown)(man); |
ba4e7d97 TH |
1358 | } |
1359 | ||
1360 | return ret; | |
1361 | } | |
1362 | EXPORT_SYMBOL(ttm_bo_clean_mm); | |
1363 | ||
1364 | int ttm_bo_evict_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1365 | { | |
1366 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
1367 | ||
1368 | if (mem_type == 0 || mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1369 | pr_err("Illegal memory manager memory type %u\n", mem_type); |
ba4e7d97 TH |
1370 | return -EINVAL; |
1371 | } | |
1372 | ||
1373 | if (!man->has_type) { | |
25d0479a | 1374 | pr_err("Memory type %u has not been initialized\n", mem_type); |
ba4e7d97 TH |
1375 | return 0; |
1376 | } | |
1377 | ||
ca262a99 | 1378 | return ttm_bo_force_list_clean(bdev, mem_type, true); |
ba4e7d97 TH |
1379 | } |
1380 | EXPORT_SYMBOL(ttm_bo_evict_mm); | |
1381 | ||
1382 | int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type, | |
ca262a99 | 1383 | unsigned long p_size) |
ba4e7d97 TH |
1384 | { |
1385 | int ret = -EINVAL; | |
1386 | struct ttm_mem_type_manager *man; | |
1387 | ||
dbc4a5b8 | 1388 | BUG_ON(type >= TTM_NUM_MEM_TYPES); |
ba4e7d97 | 1389 | man = &bdev->man[type]; |
dbc4a5b8 | 1390 | BUG_ON(man->has_type); |
eba67093 TH |
1391 | man->io_reserve_fastpath = true; |
1392 | man->use_io_reserve_lru = false; | |
1393 | mutex_init(&man->io_reserve_mutex); | |
3ddf4ad9 | 1394 | spin_lock_init(&man->move_lock); |
eba67093 | 1395 | INIT_LIST_HEAD(&man->io_reserve_lru); |
ba4e7d97 TH |
1396 | |
1397 | ret = bdev->driver->init_mem_type(bdev, type, man); | |
1398 | if (ret) | |
1399 | return ret; | |
d961db75 | 1400 | man->bdev = bdev; |
ba4e7d97 TH |
1401 | |
1402 | ret = 0; | |
1403 | if (type != TTM_PL_SYSTEM) { | |
d961db75 | 1404 | ret = (*man->func->init)(man, p_size); |
ba4e7d97 TH |
1405 | if (ret) |
1406 | return ret; | |
1407 | } | |
1408 | man->has_type = true; | |
1409 | man->use_type = true; | |
1410 | man->size = p_size; | |
1411 | ||
1412 | INIT_LIST_HEAD(&man->lru); | |
3ddf4ad9 | 1413 | man->move = NULL; |
ba4e7d97 TH |
1414 | |
1415 | return 0; | |
1416 | } | |
1417 | EXPORT_SYMBOL(ttm_bo_init_mm); | |
1418 | ||
a987fcaa TH |
1419 | static void ttm_bo_global_kobj_release(struct kobject *kobj) |
1420 | { | |
1421 | struct ttm_bo_global *glob = | |
1422 | container_of(kobj, struct ttm_bo_global, kobj); | |
1423 | ||
a987fcaa TH |
1424 | ttm_mem_unregister_shrink(glob->mem_glob, &glob->shrink); |
1425 | __free_page(glob->dummy_read_page); | |
1426 | kfree(glob); | |
1427 | } | |
1428 | ||
ba4420c2 | 1429 | void ttm_bo_global_release(struct drm_global_reference *ref) |
a987fcaa TH |
1430 | { |
1431 | struct ttm_bo_global *glob = ref->object; | |
1432 | ||
1433 | kobject_del(&glob->kobj); | |
1434 | kobject_put(&glob->kobj); | |
1435 | } | |
1436 | EXPORT_SYMBOL(ttm_bo_global_release); | |
1437 | ||
ba4420c2 | 1438 | int ttm_bo_global_init(struct drm_global_reference *ref) |
a987fcaa TH |
1439 | { |
1440 | struct ttm_bo_global_ref *bo_ref = | |
1441 | container_of(ref, struct ttm_bo_global_ref, ref); | |
1442 | struct ttm_bo_global *glob = ref->object; | |
1443 | int ret; | |
1444 | ||
1445 | mutex_init(&glob->device_list_mutex); | |
1446 | spin_lock_init(&glob->lru_lock); | |
1447 | glob->mem_glob = bo_ref->mem_glob; | |
1448 | glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); | |
1449 | ||
1450 | if (unlikely(glob->dummy_read_page == NULL)) { | |
1451 | ret = -ENOMEM; | |
1452 | goto out_no_drp; | |
1453 | } | |
1454 | ||
1455 | INIT_LIST_HEAD(&glob->swap_lru); | |
1456 | INIT_LIST_HEAD(&glob->device_list); | |
1457 | ||
1458 | ttm_mem_init_shrink(&glob->shrink, ttm_bo_swapout); | |
1459 | ret = ttm_mem_register_shrink(glob->mem_glob, &glob->shrink); | |
1460 | if (unlikely(ret != 0)) { | |
25d0479a | 1461 | pr_err("Could not register buffer object swapout\n"); |
a987fcaa TH |
1462 | goto out_no_shrink; |
1463 | } | |
1464 | ||
a987fcaa TH |
1465 | atomic_set(&glob->bo_count, 0); |
1466 | ||
b642ed06 RD |
1467 | ret = kobject_init_and_add( |
1468 | &glob->kobj, &ttm_bo_glob_kobj_type, ttm_get_kobj(), "buffer_objects"); | |
a987fcaa TH |
1469 | if (unlikely(ret != 0)) |
1470 | kobject_put(&glob->kobj); | |
1471 | return ret; | |
1472 | out_no_shrink: | |
1473 | __free_page(glob->dummy_read_page); | |
1474 | out_no_drp: | |
1475 | kfree(glob); | |
1476 | return ret; | |
1477 | } | |
1478 | EXPORT_SYMBOL(ttm_bo_global_init); | |
1479 | ||
1480 | ||
ba4e7d97 TH |
1481 | int ttm_bo_device_release(struct ttm_bo_device *bdev) |
1482 | { | |
1483 | int ret = 0; | |
1484 | unsigned i = TTM_NUM_MEM_TYPES; | |
1485 | struct ttm_mem_type_manager *man; | |
a987fcaa | 1486 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 TH |
1487 | |
1488 | while (i--) { | |
1489 | man = &bdev->man[i]; | |
1490 | if (man->has_type) { | |
1491 | man->use_type = false; | |
1492 | if ((i != TTM_PL_SYSTEM) && ttm_bo_clean_mm(bdev, i)) { | |
1493 | ret = -EBUSY; | |
25d0479a JP |
1494 | pr_err("DRM memory manager type %d is not clean\n", |
1495 | i); | |
ba4e7d97 TH |
1496 | } |
1497 | man->has_type = false; | |
1498 | } | |
1499 | } | |
1500 | ||
a987fcaa TH |
1501 | mutex_lock(&glob->device_list_mutex); |
1502 | list_del(&bdev->device_list); | |
1503 | mutex_unlock(&glob->device_list_mutex); | |
1504 | ||
f094cfc6 | 1505 | cancel_delayed_work_sync(&bdev->wq); |
ba4e7d97 TH |
1506 | |
1507 | while (ttm_bo_delayed_delete(bdev, true)) | |
1508 | ; | |
1509 | ||
a987fcaa | 1510 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
1511 | if (list_empty(&bdev->ddestroy)) |
1512 | TTM_DEBUG("Delayed destroy list was clean\n"); | |
1513 | ||
1514 | if (list_empty(&bdev->man[0].lru)) | |
1515 | TTM_DEBUG("Swap list was clean\n"); | |
a987fcaa | 1516 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1517 | |
72525b3f | 1518 | drm_vma_offset_manager_destroy(&bdev->vma_manager); |
ba4e7d97 | 1519 | |
ba4e7d97 TH |
1520 | return ret; |
1521 | } | |
1522 | EXPORT_SYMBOL(ttm_bo_device_release); | |
1523 | ||
ba4e7d97 | 1524 | int ttm_bo_device_init(struct ttm_bo_device *bdev, |
a987fcaa TH |
1525 | struct ttm_bo_global *glob, |
1526 | struct ttm_bo_driver *driver, | |
44d847b7 | 1527 | struct address_space *mapping, |
51c8b407 | 1528 | uint64_t file_page_offset, |
ad49f501 | 1529 | bool need_dma32) |
ba4e7d97 TH |
1530 | { |
1531 | int ret = -EINVAL; | |
1532 | ||
ba4e7d97 | 1533 | bdev->driver = driver; |
ba4e7d97 TH |
1534 | |
1535 | memset(bdev->man, 0, sizeof(bdev->man)); | |
1536 | ||
ba4e7d97 TH |
1537 | /* |
1538 | * Initialize the system memory buffer type. | |
1539 | * Other types need to be driver / IOCTL initialized. | |
1540 | */ | |
ca262a99 | 1541 | ret = ttm_bo_init_mm(bdev, TTM_PL_SYSTEM, 0); |
ba4e7d97 | 1542 | if (unlikely(ret != 0)) |
a987fcaa | 1543 | goto out_no_sys; |
ba4e7d97 | 1544 | |
72525b3f DH |
1545 | drm_vma_offset_manager_init(&bdev->vma_manager, file_page_offset, |
1546 | 0x10000000); | |
ba4e7d97 | 1547 | INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue); |
ba4e7d97 | 1548 | INIT_LIST_HEAD(&bdev->ddestroy); |
44d847b7 | 1549 | bdev->dev_mapping = mapping; |
a987fcaa | 1550 | bdev->glob = glob; |
ad49f501 | 1551 | bdev->need_dma32 = need_dma32; |
a987fcaa TH |
1552 | mutex_lock(&glob->device_list_mutex); |
1553 | list_add_tail(&bdev->device_list, &glob->device_list); | |
1554 | mutex_unlock(&glob->device_list_mutex); | |
ba4e7d97 TH |
1555 | |
1556 | return 0; | |
a987fcaa | 1557 | out_no_sys: |
ba4e7d97 TH |
1558 | return ret; |
1559 | } | |
1560 | EXPORT_SYMBOL(ttm_bo_device_init); | |
1561 | ||
1562 | /* | |
1563 | * buffer object vm functions. | |
1564 | */ | |
1565 | ||
1566 | bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
1567 | { | |
1568 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
1569 | ||
1570 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) { | |
1571 | if (mem->mem_type == TTM_PL_SYSTEM) | |
1572 | return false; | |
1573 | ||
1574 | if (man->flags & TTM_MEMTYPE_FLAG_CMA) | |
1575 | return false; | |
1576 | ||
1577 | if (mem->placement & TTM_PL_FLAG_CACHED) | |
1578 | return false; | |
1579 | } | |
1580 | return true; | |
1581 | } | |
1582 | ||
eba67093 | 1583 | void ttm_bo_unmap_virtual_locked(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
1584 | { |
1585 | struct ttm_bo_device *bdev = bo->bdev; | |
ba4e7d97 | 1586 | |
51335df9 | 1587 | drm_vma_node_unmap(&bo->vma_node, bdev->dev_mapping); |
eba67093 | 1588 | ttm_mem_io_free_vm(bo); |
ba4e7d97 | 1589 | } |
eba67093 TH |
1590 | |
1591 | void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo) | |
1592 | { | |
1593 | struct ttm_bo_device *bdev = bo->bdev; | |
1594 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; | |
1595 | ||
1596 | ttm_mem_io_lock(man, false); | |
1597 | ttm_bo_unmap_virtual_locked(bo); | |
1598 | ttm_mem_io_unlock(man); | |
ba4e7d97 | 1599 | } |
eba67093 TH |
1600 | |
1601 | ||
e024e110 | 1602 | EXPORT_SYMBOL(ttm_bo_unmap_virtual); |
ba4e7d97 | 1603 | |
ba4e7d97 | 1604 | int ttm_bo_wait(struct ttm_buffer_object *bo, |
8aa6d4fc | 1605 | bool interruptible, bool no_wait) |
ba4e7d97 | 1606 | { |
f849c6d6 | 1607 | long timeout = no_wait ? 0 : 15 * HZ; |
f2c24b83 | 1608 | |
f849c6d6 CK |
1609 | timeout = reservation_object_wait_timeout_rcu(bo->resv, true, |
1610 | interruptible, timeout); | |
f2c24b83 ML |
1611 | if (timeout < 0) |
1612 | return timeout; | |
1613 | ||
1614 | if (timeout == 0) | |
1615 | return -EBUSY; | |
1616 | ||
f849c6d6 | 1617 | reservation_object_add_excl_fence(bo->resv, NULL); |
f2c24b83 | 1618 | return 0; |
ba4e7d97 TH |
1619 | } |
1620 | EXPORT_SYMBOL(ttm_bo_wait); | |
1621 | ||
ba4e7d97 TH |
1622 | int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) |
1623 | { | |
1624 | int ret = 0; | |
1625 | ||
1626 | /* | |
8cfe92d6 | 1627 | * Using ttm_bo_reserve makes sure the lru lists are updated. |
ba4e7d97 TH |
1628 | */ |
1629 | ||
dfd5e50e | 1630 | ret = ttm_bo_reserve(bo, true, no_wait, NULL); |
ba4e7d97 TH |
1631 | if (unlikely(ret != 0)) |
1632 | return ret; | |
8aa6d4fc | 1633 | ret = ttm_bo_wait(bo, true, no_wait); |
ba4e7d97 TH |
1634 | if (likely(ret == 0)) |
1635 | atomic_inc(&bo->cpu_writers); | |
1636 | ttm_bo_unreserve(bo); | |
1637 | return ret; | |
1638 | } | |
d1ede145 | 1639 | EXPORT_SYMBOL(ttm_bo_synccpu_write_grab); |
ba4e7d97 TH |
1640 | |
1641 | void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo) | |
1642 | { | |
654aa792 | 1643 | atomic_dec(&bo->cpu_writers); |
ba4e7d97 | 1644 | } |
d1ede145 | 1645 | EXPORT_SYMBOL(ttm_bo_synccpu_write_release); |
ba4e7d97 TH |
1646 | |
1647 | /** | |
1648 | * A buffer object shrink method that tries to swap out the first | |
1649 | * buffer object on the bo_global::swap_lru list. | |
1650 | */ | |
1651 | ||
1652 | static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) | |
1653 | { | |
a987fcaa TH |
1654 | struct ttm_bo_global *glob = |
1655 | container_of(shrink, struct ttm_bo_global, shrink); | |
ba4e7d97 TH |
1656 | struct ttm_buffer_object *bo; |
1657 | int ret = -EBUSY; | |
1658 | int put_count; | |
1659 | uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); | |
1660 | ||
a987fcaa | 1661 | spin_lock(&glob->lru_lock); |
2b7b3ad2 | 1662 | list_for_each_entry(bo, &glob->swap_lru, swap) { |
dfd5e50e | 1663 | ret = __ttm_bo_reserve(bo, false, true, NULL); |
2b7b3ad2 ML |
1664 | if (!ret) |
1665 | break; | |
1666 | } | |
85b144f8 | 1667 | |
2b7b3ad2 ML |
1668 | if (ret) { |
1669 | spin_unlock(&glob->lru_lock); | |
1670 | return ret; | |
1671 | } | |
e1efc9b6 | 1672 | |
2b7b3ad2 | 1673 | kref_get(&bo->list_kref); |
ba4e7d97 | 1674 | |
2b7b3ad2 ML |
1675 | if (!list_empty(&bo->ddestroy)) { |
1676 | ret = ttm_bo_cleanup_refs_and_unlock(bo, false, false); | |
1677 | kref_put(&bo->list_kref, ttm_bo_release_list); | |
1678 | return ret; | |
ba4e7d97 TH |
1679 | } |
1680 | ||
ba4e7d97 | 1681 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 1682 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1683 | |
d6ea8886 | 1684 | ttm_bo_list_ref_sub(bo, put_count, true); |
ba4e7d97 TH |
1685 | |
1686 | /** | |
61ede070 | 1687 | * Move to system cached |
ba4e7d97 TH |
1688 | */ |
1689 | ||
ba4e7d97 TH |
1690 | if ((bo->mem.placement & swap_placement) != swap_placement) { |
1691 | struct ttm_mem_reg evict_mem; | |
1692 | ||
1693 | evict_mem = bo->mem; | |
1694 | evict_mem.mm_node = NULL; | |
1695 | evict_mem.placement = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED; | |
1696 | evict_mem.mem_type = TTM_PL_SYSTEM; | |
1697 | ||
1698 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, | |
97a875cb | 1699 | false, false); |
ba4e7d97 TH |
1700 | if (unlikely(ret != 0)) |
1701 | goto out; | |
1702 | } | |
1703 | ||
61ede070 CK |
1704 | /** |
1705 | * Make sure BO is idle. | |
1706 | */ | |
1707 | ||
1708 | ret = ttm_bo_wait(bo, false, false); | |
1709 | if (unlikely(ret != 0)) | |
1710 | goto out; | |
1711 | ||
ba4e7d97 TH |
1712 | ttm_bo_unmap_virtual(bo); |
1713 | ||
1714 | /** | |
1715 | * Swap out. Buffer will be swapped in again as soon as | |
1716 | * anyone tries to access a ttm page. | |
1717 | */ | |
1718 | ||
3f09ea4e TH |
1719 | if (bo->bdev->driver->swap_notify) |
1720 | bo->bdev->driver->swap_notify(bo); | |
1721 | ||
5df23979 | 1722 | ret = ttm_tt_swapout(bo->ttm, bo->persistent_swap_storage); |
ba4e7d97 TH |
1723 | out: |
1724 | ||
1725 | /** | |
1726 | * | |
1727 | * Unreserve without putting on LRU to avoid swapping out an | |
1728 | * already swapped buffer. | |
1729 | */ | |
1730 | ||
c7523083 | 1731 | __ttm_bo_unreserve(bo); |
ba4e7d97 TH |
1732 | kref_put(&bo->list_kref, ttm_bo_release_list); |
1733 | return ret; | |
1734 | } | |
1735 | ||
1736 | void ttm_bo_swapout_all(struct ttm_bo_device *bdev) | |
1737 | { | |
a987fcaa | 1738 | while (ttm_bo_swapout(&bdev->glob->shrink) == 0) |
ba4e7d97 TH |
1739 | ; |
1740 | } | |
e99e1e78 | 1741 | EXPORT_SYMBOL(ttm_bo_swapout_all); |
c58f009e TH |
1742 | |
1743 | /** | |
1744 | * ttm_bo_wait_unreserved - interruptible wait for a buffer object to become | |
1745 | * unreserved | |
1746 | * | |
1747 | * @bo: Pointer to buffer | |
1748 | */ | |
1749 | int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo) | |
1750 | { | |
1751 | int ret; | |
1752 | ||
1753 | /* | |
1754 | * In the absense of a wait_unlocked API, | |
1755 | * Use the bo::wu_mutex to avoid triggering livelocks due to | |
1756 | * concurrent use of this function. Note that this use of | |
1757 | * bo::wu_mutex can go away if we change locking order to | |
1758 | * mmap_sem -> bo::reserve. | |
1759 | */ | |
1760 | ret = mutex_lock_interruptible(&bo->wu_mutex); | |
1761 | if (unlikely(ret != 0)) | |
1762 | return -ERESTARTSYS; | |
1763 | if (!ww_mutex_is_locked(&bo->resv->lock)) | |
1764 | goto out_unlock; | |
dfd5e50e | 1765 | ret = __ttm_bo_reserve(bo, true, false, NULL); |
c58f009e TH |
1766 | if (unlikely(ret != 0)) |
1767 | goto out_unlock; | |
c7523083 | 1768 | __ttm_bo_unreserve(bo); |
c58f009e TH |
1769 | |
1770 | out_unlock: | |
1771 | mutex_unlock(&bo->wu_mutex); | |
1772 | return ret; | |
1773 | } |