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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)) | |
4e2f0caa | 357 | ret = ttm_bo_move_ttm(bo, interruptible, no_wait_gpu, mem); |
ba4e7d97 TH |
358 | else if (bdev->driver->move) |
359 | ret = bdev->driver->move(bo, evict, interruptible, | |
97a875cb | 360 | no_wait_gpu, mem); |
ba4e7d97 | 361 | else |
4499f2ac | 362 | ret = ttm_bo_move_memcpy(bo, interruptible, no_wait_gpu, mem); |
ba4e7d97 | 363 | |
9f1feed2 BS |
364 | if (ret) { |
365 | if (bdev->driver->move_notify) { | |
366 | struct ttm_mem_reg tmp_mem = *mem; | |
367 | *mem = bo->mem; | |
368 | bo->mem = tmp_mem; | |
369 | bdev->driver->move_notify(bo, mem); | |
370 | bo->mem = *mem; | |
014b3440 | 371 | *mem = tmp_mem; |
9f1feed2 | 372 | } |
ba4e7d97 | 373 | |
9f1feed2 BS |
374 | goto out_err; |
375 | } | |
dc97b340 | 376 | |
ba4e7d97 TH |
377 | moved: |
378 | if (bo->evicted) { | |
9ef7506f RC |
379 | if (bdev->driver->invalidate_caches) { |
380 | ret = bdev->driver->invalidate_caches(bdev, bo->mem.placement); | |
381 | if (ret) | |
382 | pr_err("Can not flush read caches\n"); | |
383 | } | |
ba4e7d97 TH |
384 | bo->evicted = false; |
385 | } | |
386 | ||
387 | if (bo->mem.mm_node) { | |
d961db75 | 388 | bo->offset = (bo->mem.start << PAGE_SHIFT) + |
ba4e7d97 TH |
389 | bdev->man[bo->mem.mem_type].gpu_offset; |
390 | bo->cur_placement = bo->mem.placement; | |
354fb52c TH |
391 | } else |
392 | bo->offset = 0; | |
ba4e7d97 TH |
393 | |
394 | return 0; | |
395 | ||
396 | out_err: | |
397 | new_man = &bdev->man[bo->mem.mem_type]; | |
4279cb14 | 398 | if (new_man->flags & TTM_MEMTYPE_FLAG_FIXED) { |
ba4e7d97 TH |
399 | ttm_tt_destroy(bo->ttm); |
400 | bo->ttm = NULL; | |
401 | } | |
402 | ||
403 | return ret; | |
404 | } | |
405 | ||
1df6a2eb | 406 | /** |
40d857bb | 407 | * Call bo::reserved. |
1df6a2eb | 408 | * Will release GPU memory type usage on destruction. |
40d857bb TH |
409 | * This is the place to put in driver specific hooks to release |
410 | * driver private resources. | |
411 | * Will release the bo::reserved lock. | |
1df6a2eb TH |
412 | */ |
413 | ||
414 | static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo) | |
415 | { | |
dc97b340 JG |
416 | if (bo->bdev->driver->move_notify) |
417 | bo->bdev->driver->move_notify(bo, NULL); | |
418 | ||
4279cb14 CK |
419 | ttm_tt_destroy(bo->ttm); |
420 | bo->ttm = NULL; | |
40d857bb | 421 | ttm_bo_mem_put(bo, &bo->mem); |
1df6a2eb | 422 | |
5e338405 | 423 | ww_mutex_unlock (&bo->resv->lock); |
1df6a2eb TH |
424 | } |
425 | ||
f2c24b83 ML |
426 | static void ttm_bo_flush_all_fences(struct ttm_buffer_object *bo) |
427 | { | |
428 | struct reservation_object_list *fobj; | |
429 | struct fence *fence; | |
430 | int i; | |
431 | ||
432 | fobj = reservation_object_get_list(bo->resv); | |
433 | fence = reservation_object_get_excl(bo->resv); | |
434 | if (fence && !fence->ops->signaled) | |
435 | fence_enable_sw_signaling(fence); | |
436 | ||
437 | for (i = 0; fobj && i < fobj->shared_count; ++i) { | |
438 | fence = rcu_dereference_protected(fobj->shared[i], | |
439 | reservation_object_held(bo->resv)); | |
440 | ||
441 | if (!fence->ops->signaled) | |
442 | fence_enable_sw_signaling(fence); | |
443 | } | |
444 | } | |
445 | ||
e1efc9b6 | 446 | static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
447 | { |
448 | struct ttm_bo_device *bdev = bo->bdev; | |
a987fcaa | 449 | struct ttm_bo_global *glob = bo->glob; |
e1efc9b6 | 450 | int put_count; |
ba4e7d97 TH |
451 | int ret; |
452 | ||
4154f051 | 453 | spin_lock(&glob->lru_lock); |
dfd5e50e | 454 | ret = __ttm_bo_reserve(bo, false, true, NULL); |
4154f051 | 455 | |
dd7cfd64 | 456 | if (!ret) { |
8aa6d4fc | 457 | if (!ttm_bo_wait(bo, false, true)) { |
dd7cfd64 | 458 | put_count = ttm_bo_del_from_lru(bo); |
ba4e7d97 | 459 | |
dd7cfd64 ML |
460 | spin_unlock(&glob->lru_lock); |
461 | ttm_bo_cleanup_memtype_use(bo); | |
ba4e7d97 | 462 | |
dd7cfd64 | 463 | ttm_bo_list_ref_sub(bo, put_count, true); |
4154f051 | 464 | |
dd7cfd64 | 465 | return; |
f2c24b83 ML |
466 | } else |
467 | ttm_bo_flush_all_fences(bo); | |
15205fbc TH |
468 | |
469 | /* | |
470 | * Make NO_EVICT bos immediately available to | |
471 | * shrinkers, now that they are queued for | |
472 | * destruction. | |
473 | */ | |
474 | if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT) { | |
475 | bo->mem.placement &= ~TTM_PL_FLAG_NO_EVICT; | |
476 | ttm_bo_add_to_lru(bo); | |
477 | } | |
478 | ||
c7523083 | 479 | __ttm_bo_unreserve(bo); |
15205fbc | 480 | } |
e1efc9b6 TH |
481 | |
482 | kref_get(&bo->list_kref); | |
483 | list_add_tail(&bo->ddestroy, &bdev->ddestroy); | |
484 | spin_unlock(&glob->lru_lock); | |
e1efc9b6 | 485 | |
e1efc9b6 TH |
486 | schedule_delayed_work(&bdev->wq, |
487 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
488 | } | |
489 | ||
490 | /** | |
85b144f8 | 491 | * function ttm_bo_cleanup_refs_and_unlock |
e1efc9b6 TH |
492 | * If bo idle, remove from delayed- and lru lists, and unref. |
493 | * If not idle, do nothing. | |
494 | * | |
85b144f8 ML |
495 | * Must be called with lru_lock and reservation held, this function |
496 | * will drop both before returning. | |
497 | * | |
e1efc9b6 | 498 | * @interruptible Any sleeps should occur interruptibly. |
e1efc9b6 TH |
499 | * @no_wait_gpu Never wait for gpu. Return -EBUSY instead. |
500 | */ | |
501 | ||
85b144f8 ML |
502 | static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, |
503 | bool interruptible, | |
504 | bool no_wait_gpu) | |
e1efc9b6 TH |
505 | { |
506 | struct ttm_bo_global *glob = bo->glob; | |
507 | int put_count; | |
85b144f8 | 508 | int ret; |
e1efc9b6 | 509 | |
8aa6d4fc | 510 | ret = ttm_bo_wait(bo, false, true); |
e1efc9b6 | 511 | |
85b144f8 | 512 | if (ret && !no_wait_gpu) { |
472db7ab ML |
513 | long lret; |
514 | ww_mutex_unlock(&bo->resv->lock); | |
515 | spin_unlock(&glob->lru_lock); | |
516 | ||
517 | lret = reservation_object_wait_timeout_rcu(bo->resv, | |
518 | true, | |
519 | interruptible, | |
520 | 30 * HZ); | |
521 | ||
522 | if (lret < 0) | |
523 | return lret; | |
524 | else if (lret == 0) | |
525 | return -EBUSY; | |
b8e902f2 | 526 | |
85b144f8 | 527 | spin_lock(&glob->lru_lock); |
dfd5e50e | 528 | ret = __ttm_bo_reserve(bo, false, true, NULL); |
b8e902f2 | 529 | |
85b144f8 ML |
530 | /* |
531 | * We raced, and lost, someone else holds the reservation now, | |
532 | * and is probably busy in ttm_bo_cleanup_memtype_use. | |
533 | * | |
534 | * Even if it's not the case, because we finished waiting any | |
535 | * delayed destruction would succeed, so just return success | |
536 | * here. | |
537 | */ | |
538 | if (ret) { | |
539 | spin_unlock(&glob->lru_lock); | |
540 | return 0; | |
541 | } | |
7040138f ML |
542 | |
543 | /* | |
544 | * remove sync_obj with ttm_bo_wait, the wait should be | |
545 | * finished, and no new wait object should have been added. | |
546 | */ | |
8aa6d4fc | 547 | ret = ttm_bo_wait(bo, false, true); |
7040138f ML |
548 | WARN_ON(ret); |
549 | } | |
ba4e7d97 | 550 | |
85b144f8 | 551 | if (ret || unlikely(list_empty(&bo->ddestroy))) { |
c7523083 | 552 | __ttm_bo_unreserve(bo); |
a987fcaa | 553 | spin_unlock(&glob->lru_lock); |
85b144f8 | 554 | return ret; |
ba4e7d97 TH |
555 | } |
556 | ||
e1efc9b6 TH |
557 | put_count = ttm_bo_del_from_lru(bo); |
558 | list_del_init(&bo->ddestroy); | |
559 | ++put_count; | |
560 | ||
561 | spin_unlock(&glob->lru_lock); | |
562 | ttm_bo_cleanup_memtype_use(bo); | |
563 | ||
d6ea8886 | 564 | ttm_bo_list_ref_sub(bo, put_count, true); |
e1efc9b6 TH |
565 | |
566 | return 0; | |
ba4e7d97 TH |
567 | } |
568 | ||
569 | /** | |
570 | * Traverse the delayed list, and call ttm_bo_cleanup_refs on all | |
571 | * encountered buffers. | |
572 | */ | |
573 | ||
574 | static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) | |
575 | { | |
a987fcaa | 576 | struct ttm_bo_global *glob = bdev->glob; |
1a961ce0 LB |
577 | struct ttm_buffer_object *entry = NULL; |
578 | int ret = 0; | |
ba4e7d97 | 579 | |
a987fcaa | 580 | spin_lock(&glob->lru_lock); |
1a961ce0 LB |
581 | if (list_empty(&bdev->ddestroy)) |
582 | goto out_unlock; | |
583 | ||
584 | entry = list_first_entry(&bdev->ddestroy, | |
585 | struct ttm_buffer_object, ddestroy); | |
586 | kref_get(&entry->list_kref); | |
587 | ||
588 | for (;;) { | |
589 | struct ttm_buffer_object *nentry = NULL; | |
590 | ||
591 | if (entry->ddestroy.next != &bdev->ddestroy) { | |
592 | nentry = list_first_entry(&entry->ddestroy, | |
593 | struct ttm_buffer_object, ddestroy); | |
ba4e7d97 TH |
594 | kref_get(&nentry->list_kref); |
595 | } | |
ba4e7d97 | 596 | |
dfd5e50e | 597 | ret = __ttm_bo_reserve(entry, false, true, NULL); |
63d0a419 ML |
598 | if (remove_all && ret) { |
599 | spin_unlock(&glob->lru_lock); | |
dfd5e50e | 600 | ret = __ttm_bo_reserve(entry, false, false, NULL); |
63d0a419 ML |
601 | spin_lock(&glob->lru_lock); |
602 | } | |
603 | ||
85b144f8 ML |
604 | if (!ret) |
605 | ret = ttm_bo_cleanup_refs_and_unlock(entry, false, | |
606 | !remove_all); | |
607 | else | |
608 | spin_unlock(&glob->lru_lock); | |
609 | ||
ba4e7d97 | 610 | kref_put(&entry->list_kref, ttm_bo_release_list); |
1a961ce0 LB |
611 | entry = nentry; |
612 | ||
613 | if (ret || !entry) | |
614 | goto out; | |
ba4e7d97 | 615 | |
a987fcaa | 616 | spin_lock(&glob->lru_lock); |
1a961ce0 | 617 | if (list_empty(&entry->ddestroy)) |
ba4e7d97 TH |
618 | break; |
619 | } | |
ba4e7d97 | 620 | |
1a961ce0 LB |
621 | out_unlock: |
622 | spin_unlock(&glob->lru_lock); | |
623 | out: | |
624 | if (entry) | |
625 | kref_put(&entry->list_kref, ttm_bo_release_list); | |
ba4e7d97 TH |
626 | return ret; |
627 | } | |
628 | ||
629 | static void ttm_bo_delayed_workqueue(struct work_struct *work) | |
630 | { | |
631 | struct ttm_bo_device *bdev = | |
632 | container_of(work, struct ttm_bo_device, wq.work); | |
633 | ||
634 | if (ttm_bo_delayed_delete(bdev, false)) { | |
635 | schedule_delayed_work(&bdev->wq, | |
636 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
637 | } | |
638 | } | |
639 | ||
640 | static void ttm_bo_release(struct kref *kref) | |
641 | { | |
642 | struct ttm_buffer_object *bo = | |
643 | container_of(kref, struct ttm_buffer_object, kref); | |
644 | struct ttm_bo_device *bdev = bo->bdev; | |
eba67093 | 645 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; |
ba4e7d97 | 646 | |
72525b3f | 647 | drm_vma_offset_remove(&bdev->vma_manager, &bo->vma_node); |
eba67093 TH |
648 | ttm_mem_io_lock(man, false); |
649 | ttm_mem_io_free_vm(bo); | |
650 | ttm_mem_io_unlock(man); | |
e1efc9b6 | 651 | ttm_bo_cleanup_refs_or_queue(bo); |
ba4e7d97 | 652 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
653 | } |
654 | ||
655 | void ttm_bo_unref(struct ttm_buffer_object **p_bo) | |
656 | { | |
657 | struct ttm_buffer_object *bo = *p_bo; | |
ba4e7d97 TH |
658 | |
659 | *p_bo = NULL; | |
ba4e7d97 | 660 | kref_put(&bo->kref, ttm_bo_release); |
ba4e7d97 TH |
661 | } |
662 | EXPORT_SYMBOL(ttm_bo_unref); | |
663 | ||
7c5ee536 MG |
664 | int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev) |
665 | { | |
666 | return cancel_delayed_work_sync(&bdev->wq); | |
667 | } | |
668 | EXPORT_SYMBOL(ttm_bo_lock_delayed_workqueue); | |
669 | ||
670 | void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched) | |
671 | { | |
672 | if (resched) | |
673 | schedule_delayed_work(&bdev->wq, | |
674 | ((HZ / 100) < 1) ? 1 : HZ / 100); | |
675 | } | |
676 | EXPORT_SYMBOL(ttm_bo_unlock_delayed_workqueue); | |
677 | ||
ca262a99 | 678 | static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible, |
97a875cb | 679 | bool no_wait_gpu) |
ba4e7d97 | 680 | { |
ba4e7d97 TH |
681 | struct ttm_bo_device *bdev = bo->bdev; |
682 | struct ttm_mem_reg evict_mem; | |
ca262a99 JG |
683 | struct ttm_placement placement; |
684 | int ret = 0; | |
ba4e7d97 | 685 | |
009a9dad | 686 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
687 | |
688 | evict_mem = bo->mem; | |
689 | evict_mem.mm_node = NULL; | |
eba67093 TH |
690 | evict_mem.bus.io_reserved_vm = false; |
691 | evict_mem.bus.io_reserved_count = 0; | |
ba4e7d97 | 692 | |
7cb7d1d7 JG |
693 | placement.num_placement = 0; |
694 | placement.num_busy_placement = 0; | |
ca262a99 JG |
695 | bdev->driver->evict_flags(bo, &placement); |
696 | ret = ttm_bo_mem_space(bo, &placement, &evict_mem, interruptible, | |
97a875cb | 697 | no_wait_gpu); |
ba4e7d97 | 698 | if (ret) { |
fb53f862 | 699 | if (ret != -ERESTARTSYS) { |
25d0479a JP |
700 | pr_err("Failed to find memory space for buffer 0x%p eviction\n", |
701 | bo); | |
fb53f862 JG |
702 | ttm_bo_mem_space_debug(bo, &placement); |
703 | } | |
ba4e7d97 TH |
704 | goto out; |
705 | } | |
706 | ||
707 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, interruptible, | |
97a875cb | 708 | no_wait_gpu); |
17d33bc9 | 709 | if (unlikely(ret)) { |
98ffc415 | 710 | if (ret != -ERESTARTSYS) |
25d0479a | 711 | pr_err("Buffer eviction failed\n"); |
42311ff9 | 712 | ttm_bo_mem_put(bo, &evict_mem); |
ba4e7d97 TH |
713 | goto out; |
714 | } | |
ca262a99 JG |
715 | bo->evicted = true; |
716 | out: | |
717 | return ret; | |
718 | } | |
719 | ||
720 | static int ttm_mem_evict_first(struct ttm_bo_device *bdev, | |
721 | uint32_t mem_type, | |
e300180f | 722 | const struct ttm_place *place, |
97a875cb | 723 | bool interruptible, |
9d87fa21 | 724 | bool no_wait_gpu) |
ca262a99 JG |
725 | { |
726 | struct ttm_bo_global *glob = bdev->glob; | |
727 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
728 | struct ttm_buffer_object *bo; | |
e7ab2019 | 729 | int ret = -EBUSY, put_count; |
ba4e7d97 | 730 | |
a987fcaa | 731 | spin_lock(&glob->lru_lock); |
e7ab2019 | 732 | list_for_each_entry(bo, &man->lru, lru) { |
dfd5e50e | 733 | ret = __ttm_bo_reserve(bo, false, true, NULL); |
e300180f MD |
734 | if (!ret) { |
735 | if (place && (place->fpfn || place->lpfn)) { | |
736 | /* Don't evict this BO if it's outside of the | |
737 | * requested placement range | |
738 | */ | |
739 | if (place->fpfn >= (bo->mem.start + bo->mem.size) || | |
740 | (place->lpfn && place->lpfn <= bo->mem.start)) { | |
741 | __ttm_bo_unreserve(bo); | |
742 | ret = -EBUSY; | |
743 | continue; | |
744 | } | |
745 | } | |
746 | ||
e7ab2019 | 747 | break; |
e300180f | 748 | } |
e7ab2019 ML |
749 | } |
750 | ||
751 | if (ret) { | |
9c51ba1d | 752 | spin_unlock(&glob->lru_lock); |
e7ab2019 | 753 | return ret; |
9c51ba1d TH |
754 | } |
755 | ||
ca262a99 | 756 | kref_get(&bo->list_kref); |
9c51ba1d | 757 | |
e1efc9b6 | 758 | if (!list_empty(&bo->ddestroy)) { |
e7ab2019 ML |
759 | ret = ttm_bo_cleanup_refs_and_unlock(bo, interruptible, |
760 | no_wait_gpu); | |
e1efc9b6 | 761 | kref_put(&bo->list_kref, ttm_bo_release_list); |
b8e902f2 | 762 | return ret; |
e1efc9b6 TH |
763 | } |
764 | ||
9c51ba1d | 765 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 766 | spin_unlock(&glob->lru_lock); |
9c51ba1d TH |
767 | |
768 | BUG_ON(ret != 0); | |
769 | ||
d6ea8886 | 770 | ttm_bo_list_ref_sub(bo, put_count, true); |
9c51ba1d | 771 | |
97a875cb | 772 | ret = ttm_bo_evict(bo, interruptible, no_wait_gpu); |
ca262a99 | 773 | ttm_bo_unreserve(bo); |
9c51ba1d | 774 | |
ca262a99 | 775 | kref_put(&bo->list_kref, ttm_bo_release_list); |
ba4e7d97 TH |
776 | return ret; |
777 | } | |
778 | ||
42311ff9 BS |
779 | void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem) |
780 | { | |
d961db75 | 781 | struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type]; |
42311ff9 | 782 | |
d961db75 BS |
783 | if (mem->mm_node) |
784 | (*man->func->put_node)(man, mem); | |
42311ff9 BS |
785 | } |
786 | EXPORT_SYMBOL(ttm_bo_mem_put); | |
787 | ||
3ddf4ad9 CK |
788 | /** |
789 | * Add the last move fence to the BO and reserve a new shared slot. | |
790 | */ | |
791 | static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo, | |
792 | struct ttm_mem_type_manager *man, | |
793 | struct ttm_mem_reg *mem) | |
794 | { | |
795 | struct fence *fence; | |
796 | int ret; | |
797 | ||
798 | spin_lock(&man->move_lock); | |
799 | fence = fence_get(man->move); | |
800 | spin_unlock(&man->move_lock); | |
801 | ||
802 | if (fence) { | |
803 | reservation_object_add_shared_fence(bo->resv, fence); | |
804 | ||
805 | ret = reservation_object_reserve_shared(bo->resv); | |
806 | if (unlikely(ret)) | |
807 | return ret; | |
808 | ||
809 | fence_put(bo->moving); | |
810 | bo->moving = fence; | |
811 | } | |
812 | ||
813 | return 0; | |
814 | } | |
815 | ||
ba4e7d97 TH |
816 | /** |
817 | * Repeatedly evict memory from the LRU for @mem_type until we create enough | |
818 | * space, or we've evicted everything and there isn't enough space. | |
819 | */ | |
ca262a99 JG |
820 | static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, |
821 | uint32_t mem_type, | |
f1217ed0 | 822 | const struct ttm_place *place, |
ca262a99 | 823 | struct ttm_mem_reg *mem, |
9d87fa21 | 824 | bool interruptible, |
9d87fa21 | 825 | bool no_wait_gpu) |
ba4e7d97 | 826 | { |
ca262a99 | 827 | struct ttm_bo_device *bdev = bo->bdev; |
ba4e7d97 | 828 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
ba4e7d97 TH |
829 | int ret; |
830 | ||
ba4e7d97 | 831 | do { |
f1217ed0 | 832 | ret = (*man->func->get_node)(man, bo, place, mem); |
ca262a99 JG |
833 | if (unlikely(ret != 0)) |
834 | return ret; | |
d961db75 | 835 | if (mem->mm_node) |
ba4e7d97 | 836 | break; |
e300180f | 837 | ret = ttm_mem_evict_first(bdev, mem_type, place, |
97a875cb | 838 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
839 | if (unlikely(ret != 0)) |
840 | return ret; | |
ba4e7d97 | 841 | } while (1); |
ba4e7d97 | 842 | mem->mem_type = mem_type; |
3ddf4ad9 | 843 | return ttm_bo_add_move_fence(bo, man, mem); |
ba4e7d97 TH |
844 | } |
845 | ||
ae3e8122 TH |
846 | static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man, |
847 | uint32_t cur_placement, | |
848 | uint32_t proposed_placement) | |
849 | { | |
850 | uint32_t caching = proposed_placement & TTM_PL_MASK_CACHING; | |
851 | uint32_t result = proposed_placement & ~TTM_PL_MASK_CACHING; | |
852 | ||
853 | /** | |
854 | * Keep current caching if possible. | |
855 | */ | |
856 | ||
857 | if ((cur_placement & caching) != 0) | |
858 | result |= (cur_placement & caching); | |
859 | else if ((man->default_caching & caching) != 0) | |
860 | result |= man->default_caching; | |
861 | else if ((TTM_PL_FLAG_CACHED & caching) != 0) | |
862 | result |= TTM_PL_FLAG_CACHED; | |
863 | else if ((TTM_PL_FLAG_WC & caching) != 0) | |
864 | result |= TTM_PL_FLAG_WC; | |
865 | else if ((TTM_PL_FLAG_UNCACHED & caching) != 0) | |
866 | result |= TTM_PL_FLAG_UNCACHED; | |
867 | ||
868 | return result; | |
869 | } | |
870 | ||
ba4e7d97 | 871 | static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man, |
ba4e7d97 | 872 | uint32_t mem_type, |
f1217ed0 | 873 | const struct ttm_place *place, |
ae3e8122 | 874 | uint32_t *masked_placement) |
ba4e7d97 TH |
875 | { |
876 | uint32_t cur_flags = ttm_bo_type_flags(mem_type); | |
877 | ||
f1217ed0 | 878 | if ((cur_flags & place->flags & TTM_PL_MASK_MEM) == 0) |
ba4e7d97 TH |
879 | return false; |
880 | ||
f1217ed0 | 881 | if ((place->flags & man->available_caching) == 0) |
ba4e7d97 | 882 | return false; |
ba4e7d97 | 883 | |
f1217ed0 | 884 | cur_flags |= (place->flags & man->available_caching); |
ae3e8122 TH |
885 | |
886 | *masked_placement = cur_flags; | |
ba4e7d97 TH |
887 | return true; |
888 | } | |
889 | ||
890 | /** | |
891 | * Creates space for memory region @mem according to its type. | |
892 | * | |
893 | * This function first searches for free space in compatible memory types in | |
894 | * the priority order defined by the driver. If free space isn't found, then | |
895 | * ttm_bo_mem_force_space is attempted in priority order to evict and find | |
896 | * space. | |
897 | */ | |
898 | int ttm_bo_mem_space(struct ttm_buffer_object *bo, | |
ca262a99 JG |
899 | struct ttm_placement *placement, |
900 | struct ttm_mem_reg *mem, | |
97a875cb | 901 | bool interruptible, |
9d87fa21 | 902 | bool no_wait_gpu) |
ba4e7d97 TH |
903 | { |
904 | struct ttm_bo_device *bdev = bo->bdev; | |
905 | struct ttm_mem_type_manager *man; | |
ba4e7d97 TH |
906 | uint32_t mem_type = TTM_PL_SYSTEM; |
907 | uint32_t cur_flags = 0; | |
908 | bool type_found = false; | |
909 | bool type_ok = false; | |
98ffc415 | 910 | bool has_erestartsys = false; |
ca262a99 | 911 | int i, ret; |
ba4e7d97 | 912 | |
3ddf4ad9 CK |
913 | ret = reservation_object_reserve_shared(bo->resv); |
914 | if (unlikely(ret)) | |
915 | return ret; | |
916 | ||
ba4e7d97 | 917 | mem->mm_node = NULL; |
b6637526 | 918 | for (i = 0; i < placement->num_placement; ++i) { |
f1217ed0 CK |
919 | const struct ttm_place *place = &placement->placement[i]; |
920 | ||
921 | ret = ttm_mem_type_from_place(place, &mem_type); | |
ca262a99 JG |
922 | if (ret) |
923 | return ret; | |
ba4e7d97 | 924 | man = &bdev->man[mem_type]; |
e30f3963 TH |
925 | if (!man->has_type || !man->use_type) |
926 | continue; | |
ba4e7d97 | 927 | |
f1217ed0 | 928 | type_ok = ttm_bo_mt_compatible(man, mem_type, place, |
ca262a99 | 929 | &cur_flags); |
ba4e7d97 TH |
930 | |
931 | if (!type_ok) | |
932 | continue; | |
933 | ||
e30f3963 | 934 | type_found = true; |
ae3e8122 TH |
935 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
936 | cur_flags); | |
ca262a99 JG |
937 | /* |
938 | * Use the access and other non-mapping-related flag bits from | |
939 | * the memory placement flags to the current flags | |
940 | */ | |
f1217ed0 | 941 | ttm_flag_masked(&cur_flags, place->flags, |
ca262a99 | 942 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 943 | |
ba4e7d97 TH |
944 | if (mem_type == TTM_PL_SYSTEM) |
945 | break; | |
946 | ||
e30f3963 TH |
947 | ret = (*man->func->get_node)(man, bo, place, mem); |
948 | if (unlikely(ret)) | |
949 | return ret; | |
3ddf4ad9 CK |
950 | |
951 | if (mem->mm_node) { | |
952 | ret = ttm_bo_add_move_fence(bo, man, mem); | |
953 | if (unlikely(ret)) { | |
954 | (*man->func->put_node)(man, mem); | |
955 | return ret; | |
956 | } | |
ba4e7d97 | 957 | break; |
3ddf4ad9 | 958 | } |
ba4e7d97 TH |
959 | } |
960 | ||
d961db75 | 961 | if ((type_ok && (mem_type == TTM_PL_SYSTEM)) || mem->mm_node) { |
ba4e7d97 TH |
962 | mem->mem_type = mem_type; |
963 | mem->placement = cur_flags; | |
964 | return 0; | |
965 | } | |
966 | ||
b6637526 | 967 | for (i = 0; i < placement->num_busy_placement; ++i) { |
f1217ed0 CK |
968 | const struct ttm_place *place = &placement->busy_placement[i]; |
969 | ||
970 | ret = ttm_mem_type_from_place(place, &mem_type); | |
ca262a99 JG |
971 | if (ret) |
972 | return ret; | |
ba4e7d97 | 973 | man = &bdev->man[mem_type]; |
e30f3963 | 974 | if (!man->has_type || !man->use_type) |
ba4e7d97 | 975 | continue; |
f1217ed0 | 976 | if (!ttm_bo_mt_compatible(man, mem_type, place, &cur_flags)) |
ba4e7d97 TH |
977 | continue; |
978 | ||
e30f3963 | 979 | type_found = true; |
ae3e8122 TH |
980 | cur_flags = ttm_bo_select_caching(man, bo->mem.placement, |
981 | cur_flags); | |
ca262a99 JG |
982 | /* |
983 | * Use the access and other non-mapping-related flag bits from | |
984 | * the memory placement flags to the current flags | |
985 | */ | |
f1217ed0 | 986 | ttm_flag_masked(&cur_flags, place->flags, |
ca262a99 | 987 | ~TTM_PL_MASK_MEMTYPE); |
ae3e8122 | 988 | |
0eaddb28 TH |
989 | if (mem_type == TTM_PL_SYSTEM) { |
990 | mem->mem_type = mem_type; | |
991 | mem->placement = cur_flags; | |
992 | mem->mm_node = NULL; | |
993 | return 0; | |
994 | } | |
995 | ||
f1217ed0 | 996 | ret = ttm_bo_mem_force_space(bo, mem_type, place, mem, |
97a875cb | 997 | interruptible, no_wait_gpu); |
ba4e7d97 TH |
998 | if (ret == 0 && mem->mm_node) { |
999 | mem->placement = cur_flags; | |
1000 | return 0; | |
1001 | } | |
98ffc415 TH |
1002 | if (ret == -ERESTARTSYS) |
1003 | has_erestartsys = true; | |
ba4e7d97 | 1004 | } |
e30f3963 TH |
1005 | |
1006 | if (!type_found) { | |
1007 | printk(KERN_ERR TTM_PFX "No compatible memory type found.\n"); | |
1008 | return -EINVAL; | |
1009 | } | |
1010 | ||
1011 | return (has_erestartsys) ? -ERESTARTSYS : -ENOMEM; | |
ba4e7d97 TH |
1012 | } |
1013 | EXPORT_SYMBOL(ttm_bo_mem_space); | |
1014 | ||
6e87fa48 | 1015 | static int ttm_bo_move_buffer(struct ttm_buffer_object *bo, |
ca262a99 | 1016 | struct ttm_placement *placement, |
97a875cb | 1017 | bool interruptible, |
9d87fa21 | 1018 | bool no_wait_gpu) |
ba4e7d97 | 1019 | { |
ba4e7d97 TH |
1020 | int ret = 0; |
1021 | struct ttm_mem_reg mem; | |
1022 | ||
009a9dad | 1023 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 | 1024 | |
ba4e7d97 TH |
1025 | mem.num_pages = bo->num_pages; |
1026 | mem.size = mem.num_pages << PAGE_SHIFT; | |
1027 | mem.page_alignment = bo->mem.page_alignment; | |
eba67093 TH |
1028 | mem.bus.io_reserved_vm = false; |
1029 | mem.bus.io_reserved_count = 0; | |
ba4e7d97 TH |
1030 | /* |
1031 | * Determine where to move the buffer. | |
1032 | */ | |
97a875cb ML |
1033 | ret = ttm_bo_mem_space(bo, placement, &mem, |
1034 | interruptible, no_wait_gpu); | |
ba4e7d97 TH |
1035 | if (ret) |
1036 | goto out_unlock; | |
97a875cb ML |
1037 | ret = ttm_bo_handle_move_mem(bo, &mem, false, |
1038 | interruptible, no_wait_gpu); | |
ba4e7d97 | 1039 | out_unlock: |
d961db75 BS |
1040 | if (ret && mem.mm_node) |
1041 | ttm_bo_mem_put(bo, &mem); | |
ba4e7d97 TH |
1042 | return ret; |
1043 | } | |
1044 | ||
94477bff SY |
1045 | bool ttm_bo_mem_compat(struct ttm_placement *placement, |
1046 | struct ttm_mem_reg *mem, | |
1047 | uint32_t *new_flags) | |
ba4e7d97 | 1048 | { |
ca262a99 | 1049 | int i; |
e22238ea | 1050 | |
ca262a99 | 1051 | for (i = 0; i < placement->num_placement; i++) { |
f1217ed0 | 1052 | const struct ttm_place *heap = &placement->placement[i]; |
9ace2ef7 | 1053 | if (mem->mm_node && |
f1217ed0 | 1054 | (mem->start < heap->fpfn || |
9ace2ef7 | 1055 | (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) |
f1217ed0 CK |
1056 | continue; |
1057 | ||
1058 | *new_flags = heap->flags; | |
59c8e663 TH |
1059 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && |
1060 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1061 | return true; | |
1062 | } | |
1063 | ||
1064 | for (i = 0; i < placement->num_busy_placement; i++) { | |
f1217ed0 | 1065 | const struct ttm_place *heap = &placement->busy_placement[i]; |
9ace2ef7 | 1066 | if (mem->mm_node && |
f1217ed0 | 1067 | (mem->start < heap->fpfn || |
9ace2ef7 | 1068 | (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) |
f1217ed0 CK |
1069 | continue; |
1070 | ||
1071 | *new_flags = heap->flags; | |
59c8e663 TH |
1072 | if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) && |
1073 | (*new_flags & mem->placement & TTM_PL_MASK_MEM)) | |
1074 | return true; | |
ca262a99 | 1075 | } |
59c8e663 TH |
1076 | |
1077 | return false; | |
ba4e7d97 | 1078 | } |
94477bff | 1079 | EXPORT_SYMBOL(ttm_bo_mem_compat); |
ba4e7d97 | 1080 | |
09855acb JG |
1081 | int ttm_bo_validate(struct ttm_buffer_object *bo, |
1082 | struct ttm_placement *placement, | |
97a875cb | 1083 | bool interruptible, |
9d87fa21 | 1084 | bool no_wait_gpu) |
ba4e7d97 TH |
1085 | { |
1086 | int ret; | |
59c8e663 | 1087 | uint32_t new_flags; |
ba4e7d97 | 1088 | |
009a9dad | 1089 | lockdep_assert_held(&bo->resv->lock.base); |
ba4e7d97 TH |
1090 | /* |
1091 | * Check whether we need to move buffer. | |
1092 | */ | |
59c8e663 | 1093 | if (!ttm_bo_mem_compat(placement, &bo->mem, &new_flags)) { |
97a875cb ML |
1094 | ret = ttm_bo_move_buffer(bo, placement, interruptible, |
1095 | no_wait_gpu); | |
ca262a99 | 1096 | if (ret) |
ba4e7d97 | 1097 | return ret; |
ca262a99 JG |
1098 | } else { |
1099 | /* | |
1100 | * Use the access and other non-mapping-related flag bits from | |
1101 | * the compatible memory placement flags to the active flags | |
1102 | */ | |
59c8e663 | 1103 | ttm_flag_masked(&bo->mem.placement, new_flags, |
ca262a99 | 1104 | ~TTM_PL_MASK_MEMTYPE); |
ba4e7d97 | 1105 | } |
ba4e7d97 TH |
1106 | /* |
1107 | * We might need to add a TTM. | |
1108 | */ | |
ba4e7d97 TH |
1109 | if (bo->mem.mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { |
1110 | ret = ttm_bo_add_ttm(bo, true); | |
1111 | if (ret) | |
1112 | return ret; | |
1113 | } | |
ba4e7d97 TH |
1114 | return 0; |
1115 | } | |
09855acb | 1116 | EXPORT_SYMBOL(ttm_bo_validate); |
ba4e7d97 | 1117 | |
09855acb JG |
1118 | int ttm_bo_init(struct ttm_bo_device *bdev, |
1119 | struct ttm_buffer_object *bo, | |
1120 | unsigned long size, | |
1121 | enum ttm_bo_type type, | |
1122 | struct ttm_placement *placement, | |
1123 | uint32_t page_alignment, | |
09855acb | 1124 | bool interruptible, |
5df23979 | 1125 | struct file *persistent_swap_storage, |
09855acb | 1126 | size_t acc_size, |
129b78bf | 1127 | struct sg_table *sg, |
f4f4e3e3 | 1128 | struct reservation_object *resv, |
09855acb | 1129 | void (*destroy) (struct ttm_buffer_object *)) |
ba4e7d97 | 1130 | { |
09855acb | 1131 | int ret = 0; |
ba4e7d97 | 1132 | unsigned long num_pages; |
57de4ba9 | 1133 | struct ttm_mem_global *mem_glob = bdev->glob->mem_glob; |
5e338405 | 1134 | bool locked; |
57de4ba9 JG |
1135 | |
1136 | ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false); | |
1137 | if (ret) { | |
25d0479a | 1138 | pr_err("Out of kernel memory\n"); |
57de4ba9 JG |
1139 | if (destroy) |
1140 | (*destroy)(bo); | |
1141 | else | |
1142 | kfree(bo); | |
1143 | return -ENOMEM; | |
1144 | } | |
ba4e7d97 | 1145 | |
ba4e7d97 TH |
1146 | num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; |
1147 | if (num_pages == 0) { | |
25d0479a | 1148 | pr_err("Illegal buffer object size\n"); |
7dfbbdcf TH |
1149 | if (destroy) |
1150 | (*destroy)(bo); | |
1151 | else | |
1152 | kfree(bo); | |
a393c730 | 1153 | ttm_mem_global_free(mem_glob, acc_size); |
ba4e7d97 TH |
1154 | return -EINVAL; |
1155 | } | |
1156 | bo->destroy = destroy; | |
1157 | ||
ba4e7d97 TH |
1158 | kref_init(&bo->kref); |
1159 | kref_init(&bo->list_kref); | |
1160 | atomic_set(&bo->cpu_writers, 0); | |
ba4e7d97 TH |
1161 | INIT_LIST_HEAD(&bo->lru); |
1162 | INIT_LIST_HEAD(&bo->ddestroy); | |
1163 | INIT_LIST_HEAD(&bo->swap); | |
eba67093 | 1164 | INIT_LIST_HEAD(&bo->io_reserve_lru); |
c58f009e | 1165 | mutex_init(&bo->wu_mutex); |
ba4e7d97 | 1166 | bo->bdev = bdev; |
a987fcaa | 1167 | bo->glob = bdev->glob; |
ba4e7d97 TH |
1168 | bo->type = type; |
1169 | bo->num_pages = num_pages; | |
eb6d2c39 | 1170 | bo->mem.size = num_pages << PAGE_SHIFT; |
ba4e7d97 TH |
1171 | bo->mem.mem_type = TTM_PL_SYSTEM; |
1172 | bo->mem.num_pages = bo->num_pages; | |
1173 | bo->mem.mm_node = NULL; | |
1174 | bo->mem.page_alignment = page_alignment; | |
eba67093 TH |
1175 | bo->mem.bus.io_reserved_vm = false; |
1176 | bo->mem.bus.io_reserved_count = 0; | |
5bc73067 | 1177 | bo->moving = NULL; |
ba4e7d97 | 1178 | bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED); |
5df23979 | 1179 | bo->persistent_swap_storage = persistent_swap_storage; |
ba4e7d97 | 1180 | bo->acc_size = acc_size; |
129b78bf | 1181 | bo->sg = sg; |
f4f4e3e3 ML |
1182 | if (resv) { |
1183 | bo->resv = resv; | |
1184 | lockdep_assert_held(&bo->resv->lock.base); | |
1185 | } else { | |
1186 | bo->resv = &bo->ttm_resv; | |
1187 | reservation_object_init(&bo->ttm_resv); | |
1188 | } | |
a987fcaa | 1189 | atomic_inc(&bo->glob->bo_count); |
72525b3f | 1190 | drm_vma_node_reset(&bo->vma_node); |
ba4e7d97 | 1191 | |
ba4e7d97 TH |
1192 | /* |
1193 | * For ttm_bo_type_device buffers, allocate | |
1194 | * address space from the device. | |
1195 | */ | |
f1217ed0 CK |
1196 | if (bo->type == ttm_bo_type_device || |
1197 | bo->type == ttm_bo_type_sg) | |
abf19035 DH |
1198 | ret = drm_vma_offset_add(&bdev->vma_manager, &bo->vma_node, |
1199 | bo->mem.num_pages); | |
ba4e7d97 | 1200 | |
f4f4e3e3 ML |
1201 | /* passed reservation objects should already be locked, |
1202 | * since otherwise lockdep will be angered in radeon. | |
1203 | */ | |
1204 | if (!resv) { | |
1205 | locked = ww_mutex_trylock(&bo->resv->lock); | |
1206 | WARN_ON(!locked); | |
1207 | } | |
ba4e7d97 | 1208 | |
5e338405 ML |
1209 | if (likely(!ret)) |
1210 | ret = ttm_bo_validate(bo, placement, interruptible, false); | |
ba4e7d97 | 1211 | |
33d48cf8 | 1212 | if (!resv) { |
f4f4e3e3 | 1213 | ttm_bo_unreserve(bo); |
5e338405 | 1214 | |
33d48cf8 CK |
1215 | } else if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { |
1216 | spin_lock(&bo->glob->lru_lock); | |
1217 | ttm_bo_add_to_lru(bo); | |
1218 | spin_unlock(&bo->glob->lru_lock); | |
1219 | } | |
1220 | ||
5e338405 ML |
1221 | if (unlikely(ret)) |
1222 | ttm_bo_unref(&bo); | |
ba4e7d97 TH |
1223 | |
1224 | return ret; | |
1225 | } | |
09855acb | 1226 | EXPORT_SYMBOL(ttm_bo_init); |
ba4e7d97 | 1227 | |
57de4ba9 JG |
1228 | size_t ttm_bo_acc_size(struct ttm_bo_device *bdev, |
1229 | unsigned long bo_size, | |
1230 | unsigned struct_size) | |
ba4e7d97 | 1231 | { |
57de4ba9 JG |
1232 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; |
1233 | size_t size = 0; | |
ba4e7d97 | 1234 | |
57de4ba9 | 1235 | size += ttm_round_pot(struct_size); |
85621630 | 1236 | size += ttm_round_pot(npages * sizeof(void *)); |
57de4ba9 JG |
1237 | size += ttm_round_pot(sizeof(struct ttm_tt)); |
1238 | return size; | |
ba4e7d97 | 1239 | } |
57de4ba9 JG |
1240 | EXPORT_SYMBOL(ttm_bo_acc_size); |
1241 | ||
1242 | size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev, | |
1243 | unsigned long bo_size, | |
1244 | unsigned struct_size) | |
1245 | { | |
1246 | unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT; | |
1247 | size_t size = 0; | |
1248 | ||
1249 | size += ttm_round_pot(struct_size); | |
85621630 | 1250 | size += ttm_round_pot(npages * (2*sizeof(void *) + sizeof(dma_addr_t))); |
57de4ba9 JG |
1251 | size += ttm_round_pot(sizeof(struct ttm_dma_tt)); |
1252 | return size; | |
1253 | } | |
1254 | EXPORT_SYMBOL(ttm_bo_dma_acc_size); | |
ba4e7d97 | 1255 | |
09855acb JG |
1256 | int ttm_bo_create(struct ttm_bo_device *bdev, |
1257 | unsigned long size, | |
1258 | enum ttm_bo_type type, | |
1259 | struct ttm_placement *placement, | |
1260 | uint32_t page_alignment, | |
09855acb | 1261 | bool interruptible, |
5df23979 | 1262 | struct file *persistent_swap_storage, |
09855acb | 1263 | struct ttm_buffer_object **p_bo) |
ba4e7d97 TH |
1264 | { |
1265 | struct ttm_buffer_object *bo; | |
57de4ba9 | 1266 | size_t acc_size; |
ca262a99 | 1267 | int ret; |
ba4e7d97 | 1268 | |
ba4e7d97 | 1269 | bo = kzalloc(sizeof(*bo), GFP_KERNEL); |
a393c730 | 1270 | if (unlikely(bo == NULL)) |
ba4e7d97 | 1271 | return -ENOMEM; |
ba4e7d97 | 1272 | |
a393c730 | 1273 | acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct ttm_buffer_object)); |
09855acb | 1274 | ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment, |
0b91c4a1 | 1275 | interruptible, persistent_swap_storage, acc_size, |
f4f4e3e3 | 1276 | NULL, NULL, NULL); |
ba4e7d97 TH |
1277 | if (likely(ret == 0)) |
1278 | *p_bo = bo; | |
1279 | ||
1280 | return ret; | |
1281 | } | |
4d798937 | 1282 | EXPORT_SYMBOL(ttm_bo_create); |
ba4e7d97 | 1283 | |
ba4e7d97 | 1284 | static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, |
ca262a99 | 1285 | unsigned mem_type, bool allow_errors) |
ba4e7d97 | 1286 | { |
ca262a99 | 1287 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; |
a987fcaa | 1288 | struct ttm_bo_global *glob = bdev->glob; |
aff98ba1 | 1289 | struct fence *fence; |
ba4e7d97 | 1290 | int ret; |
ba4e7d97 TH |
1291 | |
1292 | /* | |
1293 | * Can't use standard list traversal since we're unlocking. | |
1294 | */ | |
1295 | ||
a987fcaa | 1296 | spin_lock(&glob->lru_lock); |
ca262a99 | 1297 | while (!list_empty(&man->lru)) { |
a987fcaa | 1298 | spin_unlock(&glob->lru_lock); |
e300180f | 1299 | ret = ttm_mem_evict_first(bdev, mem_type, NULL, false, false); |
ca262a99 JG |
1300 | if (ret) { |
1301 | if (allow_errors) { | |
1302 | return ret; | |
1303 | } else { | |
25d0479a | 1304 | pr_err("Cleanup eviction failed\n"); |
ca262a99 JG |
1305 | } |
1306 | } | |
a987fcaa | 1307 | spin_lock(&glob->lru_lock); |
ba4e7d97 | 1308 | } |
a987fcaa | 1309 | spin_unlock(&glob->lru_lock); |
aff98ba1 CK |
1310 | |
1311 | spin_lock(&man->move_lock); | |
1312 | fence = fence_get(man->move); | |
1313 | spin_unlock(&man->move_lock); | |
1314 | ||
1315 | if (fence) { | |
1316 | ret = fence_wait(fence, false); | |
1317 | fence_put(fence); | |
1318 | if (ret) { | |
1319 | if (allow_errors) { | |
1320 | return ret; | |
1321 | } else { | |
1322 | pr_err("Cleanup eviction failed\n"); | |
1323 | } | |
1324 | } | |
1325 | } | |
1326 | ||
ba4e7d97 TH |
1327 | return 0; |
1328 | } | |
1329 | ||
1330 | int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1331 | { | |
c96e7c7a | 1332 | struct ttm_mem_type_manager *man; |
ba4e7d97 TH |
1333 | int ret = -EINVAL; |
1334 | ||
1335 | if (mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1336 | pr_err("Illegal memory type %d\n", mem_type); |
ba4e7d97 TH |
1337 | return ret; |
1338 | } | |
c96e7c7a | 1339 | man = &bdev->man[mem_type]; |
ba4e7d97 TH |
1340 | |
1341 | if (!man->has_type) { | |
25d0479a JP |
1342 | pr_err("Trying to take down uninitialized memory manager type %u\n", |
1343 | mem_type); | |
ba4e7d97 TH |
1344 | return ret; |
1345 | } | |
3ddf4ad9 | 1346 | fence_put(man->move); |
ba4e7d97 TH |
1347 | |
1348 | man->use_type = false; | |
1349 | man->has_type = false; | |
1350 | ||
1351 | ret = 0; | |
1352 | if (mem_type > 0) { | |
ca262a99 | 1353 | ttm_bo_force_list_clean(bdev, mem_type, false); |
ba4e7d97 | 1354 | |
d961db75 | 1355 | ret = (*man->func->takedown)(man); |
ba4e7d97 TH |
1356 | } |
1357 | ||
1358 | return ret; | |
1359 | } | |
1360 | EXPORT_SYMBOL(ttm_bo_clean_mm); | |
1361 | ||
1362 | int ttm_bo_evict_mm(struct ttm_bo_device *bdev, unsigned mem_type) | |
1363 | { | |
1364 | struct ttm_mem_type_manager *man = &bdev->man[mem_type]; | |
1365 | ||
1366 | if (mem_type == 0 || mem_type >= TTM_NUM_MEM_TYPES) { | |
25d0479a | 1367 | pr_err("Illegal memory manager memory type %u\n", mem_type); |
ba4e7d97 TH |
1368 | return -EINVAL; |
1369 | } | |
1370 | ||
1371 | if (!man->has_type) { | |
25d0479a | 1372 | pr_err("Memory type %u has not been initialized\n", mem_type); |
ba4e7d97 TH |
1373 | return 0; |
1374 | } | |
1375 | ||
ca262a99 | 1376 | return ttm_bo_force_list_clean(bdev, mem_type, true); |
ba4e7d97 TH |
1377 | } |
1378 | EXPORT_SYMBOL(ttm_bo_evict_mm); | |
1379 | ||
1380 | int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type, | |
ca262a99 | 1381 | unsigned long p_size) |
ba4e7d97 TH |
1382 | { |
1383 | int ret = -EINVAL; | |
1384 | struct ttm_mem_type_manager *man; | |
1385 | ||
dbc4a5b8 | 1386 | BUG_ON(type >= TTM_NUM_MEM_TYPES); |
ba4e7d97 | 1387 | man = &bdev->man[type]; |
dbc4a5b8 | 1388 | BUG_ON(man->has_type); |
eba67093 TH |
1389 | man->io_reserve_fastpath = true; |
1390 | man->use_io_reserve_lru = false; | |
1391 | mutex_init(&man->io_reserve_mutex); | |
3ddf4ad9 | 1392 | spin_lock_init(&man->move_lock); |
eba67093 | 1393 | INIT_LIST_HEAD(&man->io_reserve_lru); |
ba4e7d97 TH |
1394 | |
1395 | ret = bdev->driver->init_mem_type(bdev, type, man); | |
1396 | if (ret) | |
1397 | return ret; | |
d961db75 | 1398 | man->bdev = bdev; |
ba4e7d97 TH |
1399 | |
1400 | ret = 0; | |
1401 | if (type != TTM_PL_SYSTEM) { | |
d961db75 | 1402 | ret = (*man->func->init)(man, p_size); |
ba4e7d97 TH |
1403 | if (ret) |
1404 | return ret; | |
1405 | } | |
1406 | man->has_type = true; | |
1407 | man->use_type = true; | |
1408 | man->size = p_size; | |
1409 | ||
1410 | INIT_LIST_HEAD(&man->lru); | |
3ddf4ad9 | 1411 | man->move = NULL; |
ba4e7d97 TH |
1412 | |
1413 | return 0; | |
1414 | } | |
1415 | EXPORT_SYMBOL(ttm_bo_init_mm); | |
1416 | ||
a987fcaa TH |
1417 | static void ttm_bo_global_kobj_release(struct kobject *kobj) |
1418 | { | |
1419 | struct ttm_bo_global *glob = | |
1420 | container_of(kobj, struct ttm_bo_global, kobj); | |
1421 | ||
a987fcaa TH |
1422 | ttm_mem_unregister_shrink(glob->mem_glob, &glob->shrink); |
1423 | __free_page(glob->dummy_read_page); | |
1424 | kfree(glob); | |
1425 | } | |
1426 | ||
ba4420c2 | 1427 | void ttm_bo_global_release(struct drm_global_reference *ref) |
a987fcaa TH |
1428 | { |
1429 | struct ttm_bo_global *glob = ref->object; | |
1430 | ||
1431 | kobject_del(&glob->kobj); | |
1432 | kobject_put(&glob->kobj); | |
1433 | } | |
1434 | EXPORT_SYMBOL(ttm_bo_global_release); | |
1435 | ||
ba4420c2 | 1436 | int ttm_bo_global_init(struct drm_global_reference *ref) |
a987fcaa TH |
1437 | { |
1438 | struct ttm_bo_global_ref *bo_ref = | |
1439 | container_of(ref, struct ttm_bo_global_ref, ref); | |
1440 | struct ttm_bo_global *glob = ref->object; | |
1441 | int ret; | |
1442 | ||
1443 | mutex_init(&glob->device_list_mutex); | |
1444 | spin_lock_init(&glob->lru_lock); | |
1445 | glob->mem_glob = bo_ref->mem_glob; | |
1446 | glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); | |
1447 | ||
1448 | if (unlikely(glob->dummy_read_page == NULL)) { | |
1449 | ret = -ENOMEM; | |
1450 | goto out_no_drp; | |
1451 | } | |
1452 | ||
1453 | INIT_LIST_HEAD(&glob->swap_lru); | |
1454 | INIT_LIST_HEAD(&glob->device_list); | |
1455 | ||
1456 | ttm_mem_init_shrink(&glob->shrink, ttm_bo_swapout); | |
1457 | ret = ttm_mem_register_shrink(glob->mem_glob, &glob->shrink); | |
1458 | if (unlikely(ret != 0)) { | |
25d0479a | 1459 | pr_err("Could not register buffer object swapout\n"); |
a987fcaa TH |
1460 | goto out_no_shrink; |
1461 | } | |
1462 | ||
a987fcaa TH |
1463 | atomic_set(&glob->bo_count, 0); |
1464 | ||
b642ed06 RD |
1465 | ret = kobject_init_and_add( |
1466 | &glob->kobj, &ttm_bo_glob_kobj_type, ttm_get_kobj(), "buffer_objects"); | |
a987fcaa TH |
1467 | if (unlikely(ret != 0)) |
1468 | kobject_put(&glob->kobj); | |
1469 | return ret; | |
1470 | out_no_shrink: | |
1471 | __free_page(glob->dummy_read_page); | |
1472 | out_no_drp: | |
1473 | kfree(glob); | |
1474 | return ret; | |
1475 | } | |
1476 | EXPORT_SYMBOL(ttm_bo_global_init); | |
1477 | ||
1478 | ||
ba4e7d97 TH |
1479 | int ttm_bo_device_release(struct ttm_bo_device *bdev) |
1480 | { | |
1481 | int ret = 0; | |
1482 | unsigned i = TTM_NUM_MEM_TYPES; | |
1483 | struct ttm_mem_type_manager *man; | |
a987fcaa | 1484 | struct ttm_bo_global *glob = bdev->glob; |
ba4e7d97 TH |
1485 | |
1486 | while (i--) { | |
1487 | man = &bdev->man[i]; | |
1488 | if (man->has_type) { | |
1489 | man->use_type = false; | |
1490 | if ((i != TTM_PL_SYSTEM) && ttm_bo_clean_mm(bdev, i)) { | |
1491 | ret = -EBUSY; | |
25d0479a JP |
1492 | pr_err("DRM memory manager type %d is not clean\n", |
1493 | i); | |
ba4e7d97 TH |
1494 | } |
1495 | man->has_type = false; | |
1496 | } | |
1497 | } | |
1498 | ||
a987fcaa TH |
1499 | mutex_lock(&glob->device_list_mutex); |
1500 | list_del(&bdev->device_list); | |
1501 | mutex_unlock(&glob->device_list_mutex); | |
1502 | ||
f094cfc6 | 1503 | cancel_delayed_work_sync(&bdev->wq); |
ba4e7d97 TH |
1504 | |
1505 | while (ttm_bo_delayed_delete(bdev, true)) | |
1506 | ; | |
1507 | ||
a987fcaa | 1508 | spin_lock(&glob->lru_lock); |
ba4e7d97 TH |
1509 | if (list_empty(&bdev->ddestroy)) |
1510 | TTM_DEBUG("Delayed destroy list was clean\n"); | |
1511 | ||
1512 | if (list_empty(&bdev->man[0].lru)) | |
1513 | TTM_DEBUG("Swap list was clean\n"); | |
a987fcaa | 1514 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1515 | |
72525b3f | 1516 | drm_vma_offset_manager_destroy(&bdev->vma_manager); |
ba4e7d97 | 1517 | |
ba4e7d97 TH |
1518 | return ret; |
1519 | } | |
1520 | EXPORT_SYMBOL(ttm_bo_device_release); | |
1521 | ||
ba4e7d97 | 1522 | int ttm_bo_device_init(struct ttm_bo_device *bdev, |
a987fcaa TH |
1523 | struct ttm_bo_global *glob, |
1524 | struct ttm_bo_driver *driver, | |
44d847b7 | 1525 | struct address_space *mapping, |
51c8b407 | 1526 | uint64_t file_page_offset, |
ad49f501 | 1527 | bool need_dma32) |
ba4e7d97 TH |
1528 | { |
1529 | int ret = -EINVAL; | |
1530 | ||
ba4e7d97 | 1531 | bdev->driver = driver; |
ba4e7d97 TH |
1532 | |
1533 | memset(bdev->man, 0, sizeof(bdev->man)); | |
1534 | ||
ba4e7d97 TH |
1535 | /* |
1536 | * Initialize the system memory buffer type. | |
1537 | * Other types need to be driver / IOCTL initialized. | |
1538 | */ | |
ca262a99 | 1539 | ret = ttm_bo_init_mm(bdev, TTM_PL_SYSTEM, 0); |
ba4e7d97 | 1540 | if (unlikely(ret != 0)) |
a987fcaa | 1541 | goto out_no_sys; |
ba4e7d97 | 1542 | |
72525b3f DH |
1543 | drm_vma_offset_manager_init(&bdev->vma_manager, file_page_offset, |
1544 | 0x10000000); | |
ba4e7d97 | 1545 | INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue); |
ba4e7d97 | 1546 | INIT_LIST_HEAD(&bdev->ddestroy); |
44d847b7 | 1547 | bdev->dev_mapping = mapping; |
a987fcaa | 1548 | bdev->glob = glob; |
ad49f501 | 1549 | bdev->need_dma32 = need_dma32; |
a987fcaa TH |
1550 | mutex_lock(&glob->device_list_mutex); |
1551 | list_add_tail(&bdev->device_list, &glob->device_list); | |
1552 | mutex_unlock(&glob->device_list_mutex); | |
ba4e7d97 TH |
1553 | |
1554 | return 0; | |
a987fcaa | 1555 | out_no_sys: |
ba4e7d97 TH |
1556 | return ret; |
1557 | } | |
1558 | EXPORT_SYMBOL(ttm_bo_device_init); | |
1559 | ||
1560 | /* | |
1561 | * buffer object vm functions. | |
1562 | */ | |
1563 | ||
1564 | bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
1565 | { | |
1566 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
1567 | ||
1568 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) { | |
1569 | if (mem->mem_type == TTM_PL_SYSTEM) | |
1570 | return false; | |
1571 | ||
1572 | if (man->flags & TTM_MEMTYPE_FLAG_CMA) | |
1573 | return false; | |
1574 | ||
1575 | if (mem->placement & TTM_PL_FLAG_CACHED) | |
1576 | return false; | |
1577 | } | |
1578 | return true; | |
1579 | } | |
1580 | ||
eba67093 | 1581 | void ttm_bo_unmap_virtual_locked(struct ttm_buffer_object *bo) |
ba4e7d97 TH |
1582 | { |
1583 | struct ttm_bo_device *bdev = bo->bdev; | |
ba4e7d97 | 1584 | |
51335df9 | 1585 | drm_vma_node_unmap(&bo->vma_node, bdev->dev_mapping); |
eba67093 | 1586 | ttm_mem_io_free_vm(bo); |
ba4e7d97 | 1587 | } |
eba67093 TH |
1588 | |
1589 | void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo) | |
1590 | { | |
1591 | struct ttm_bo_device *bdev = bo->bdev; | |
1592 | struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; | |
1593 | ||
1594 | ttm_mem_io_lock(man, false); | |
1595 | ttm_bo_unmap_virtual_locked(bo); | |
1596 | ttm_mem_io_unlock(man); | |
ba4e7d97 | 1597 | } |
eba67093 TH |
1598 | |
1599 | ||
e024e110 | 1600 | EXPORT_SYMBOL(ttm_bo_unmap_virtual); |
ba4e7d97 | 1601 | |
ba4e7d97 | 1602 | int ttm_bo_wait(struct ttm_buffer_object *bo, |
8aa6d4fc | 1603 | bool interruptible, bool no_wait) |
ba4e7d97 | 1604 | { |
f849c6d6 | 1605 | long timeout = no_wait ? 0 : 15 * HZ; |
f2c24b83 | 1606 | |
f849c6d6 CK |
1607 | timeout = reservation_object_wait_timeout_rcu(bo->resv, true, |
1608 | interruptible, timeout); | |
f2c24b83 ML |
1609 | if (timeout < 0) |
1610 | return timeout; | |
1611 | ||
1612 | if (timeout == 0) | |
1613 | return -EBUSY; | |
1614 | ||
f849c6d6 | 1615 | reservation_object_add_excl_fence(bo->resv, NULL); |
f2c24b83 | 1616 | return 0; |
ba4e7d97 TH |
1617 | } |
1618 | EXPORT_SYMBOL(ttm_bo_wait); | |
1619 | ||
ba4e7d97 TH |
1620 | int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) |
1621 | { | |
1622 | int ret = 0; | |
1623 | ||
1624 | /* | |
8cfe92d6 | 1625 | * Using ttm_bo_reserve makes sure the lru lists are updated. |
ba4e7d97 TH |
1626 | */ |
1627 | ||
dfd5e50e | 1628 | ret = ttm_bo_reserve(bo, true, no_wait, NULL); |
ba4e7d97 TH |
1629 | if (unlikely(ret != 0)) |
1630 | return ret; | |
8aa6d4fc | 1631 | ret = ttm_bo_wait(bo, true, no_wait); |
ba4e7d97 TH |
1632 | if (likely(ret == 0)) |
1633 | atomic_inc(&bo->cpu_writers); | |
1634 | ttm_bo_unreserve(bo); | |
1635 | return ret; | |
1636 | } | |
d1ede145 | 1637 | EXPORT_SYMBOL(ttm_bo_synccpu_write_grab); |
ba4e7d97 TH |
1638 | |
1639 | void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo) | |
1640 | { | |
654aa792 | 1641 | atomic_dec(&bo->cpu_writers); |
ba4e7d97 | 1642 | } |
d1ede145 | 1643 | EXPORT_SYMBOL(ttm_bo_synccpu_write_release); |
ba4e7d97 TH |
1644 | |
1645 | /** | |
1646 | * A buffer object shrink method that tries to swap out the first | |
1647 | * buffer object on the bo_global::swap_lru list. | |
1648 | */ | |
1649 | ||
1650 | static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) | |
1651 | { | |
a987fcaa TH |
1652 | struct ttm_bo_global *glob = |
1653 | container_of(shrink, struct ttm_bo_global, shrink); | |
ba4e7d97 TH |
1654 | struct ttm_buffer_object *bo; |
1655 | int ret = -EBUSY; | |
1656 | int put_count; | |
1657 | uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); | |
1658 | ||
a987fcaa | 1659 | spin_lock(&glob->lru_lock); |
2b7b3ad2 | 1660 | list_for_each_entry(bo, &glob->swap_lru, swap) { |
dfd5e50e | 1661 | ret = __ttm_bo_reserve(bo, false, true, NULL); |
2b7b3ad2 ML |
1662 | if (!ret) |
1663 | break; | |
1664 | } | |
85b144f8 | 1665 | |
2b7b3ad2 ML |
1666 | if (ret) { |
1667 | spin_unlock(&glob->lru_lock); | |
1668 | return ret; | |
1669 | } | |
e1efc9b6 | 1670 | |
2b7b3ad2 | 1671 | kref_get(&bo->list_kref); |
ba4e7d97 | 1672 | |
2b7b3ad2 ML |
1673 | if (!list_empty(&bo->ddestroy)) { |
1674 | ret = ttm_bo_cleanup_refs_and_unlock(bo, false, false); | |
1675 | kref_put(&bo->list_kref, ttm_bo_release_list); | |
1676 | return ret; | |
ba4e7d97 TH |
1677 | } |
1678 | ||
ba4e7d97 | 1679 | put_count = ttm_bo_del_from_lru(bo); |
a987fcaa | 1680 | spin_unlock(&glob->lru_lock); |
ba4e7d97 | 1681 | |
d6ea8886 | 1682 | ttm_bo_list_ref_sub(bo, put_count, true); |
ba4e7d97 TH |
1683 | |
1684 | /** | |
61ede070 | 1685 | * Move to system cached |
ba4e7d97 TH |
1686 | */ |
1687 | ||
ba4e7d97 TH |
1688 | if ((bo->mem.placement & swap_placement) != swap_placement) { |
1689 | struct ttm_mem_reg evict_mem; | |
1690 | ||
1691 | evict_mem = bo->mem; | |
1692 | evict_mem.mm_node = NULL; | |
1693 | evict_mem.placement = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED; | |
1694 | evict_mem.mem_type = TTM_PL_SYSTEM; | |
1695 | ||
1696 | ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, | |
97a875cb | 1697 | false, false); |
ba4e7d97 TH |
1698 | if (unlikely(ret != 0)) |
1699 | goto out; | |
1700 | } | |
1701 | ||
61ede070 CK |
1702 | /** |
1703 | * Make sure BO is idle. | |
1704 | */ | |
1705 | ||
1706 | ret = ttm_bo_wait(bo, false, false); | |
1707 | if (unlikely(ret != 0)) | |
1708 | goto out; | |
1709 | ||
ba4e7d97 TH |
1710 | ttm_bo_unmap_virtual(bo); |
1711 | ||
1712 | /** | |
1713 | * Swap out. Buffer will be swapped in again as soon as | |
1714 | * anyone tries to access a ttm page. | |
1715 | */ | |
1716 | ||
3f09ea4e TH |
1717 | if (bo->bdev->driver->swap_notify) |
1718 | bo->bdev->driver->swap_notify(bo); | |
1719 | ||
5df23979 | 1720 | ret = ttm_tt_swapout(bo->ttm, bo->persistent_swap_storage); |
ba4e7d97 TH |
1721 | out: |
1722 | ||
1723 | /** | |
1724 | * | |
1725 | * Unreserve without putting on LRU to avoid swapping out an | |
1726 | * already swapped buffer. | |
1727 | */ | |
1728 | ||
c7523083 | 1729 | __ttm_bo_unreserve(bo); |
ba4e7d97 TH |
1730 | kref_put(&bo->list_kref, ttm_bo_release_list); |
1731 | return ret; | |
1732 | } | |
1733 | ||
1734 | void ttm_bo_swapout_all(struct ttm_bo_device *bdev) | |
1735 | { | |
a987fcaa | 1736 | while (ttm_bo_swapout(&bdev->glob->shrink) == 0) |
ba4e7d97 TH |
1737 | ; |
1738 | } | |
e99e1e78 | 1739 | EXPORT_SYMBOL(ttm_bo_swapout_all); |
c58f009e TH |
1740 | |
1741 | /** | |
1742 | * ttm_bo_wait_unreserved - interruptible wait for a buffer object to become | |
1743 | * unreserved | |
1744 | * | |
1745 | * @bo: Pointer to buffer | |
1746 | */ | |
1747 | int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo) | |
1748 | { | |
1749 | int ret; | |
1750 | ||
1751 | /* | |
1752 | * In the absense of a wait_unlocked API, | |
1753 | * Use the bo::wu_mutex to avoid triggering livelocks due to | |
1754 | * concurrent use of this function. Note that this use of | |
1755 | * bo::wu_mutex can go away if we change locking order to | |
1756 | * mmap_sem -> bo::reserve. | |
1757 | */ | |
1758 | ret = mutex_lock_interruptible(&bo->wu_mutex); | |
1759 | if (unlikely(ret != 0)) | |
1760 | return -ERESTARTSYS; | |
1761 | if (!ww_mutex_is_locked(&bo->resv->lock)) | |
1762 | goto out_unlock; | |
dfd5e50e | 1763 | ret = __ttm_bo_reserve(bo, true, false, NULL); |
c58f009e TH |
1764 | if (unlikely(ret != 0)) |
1765 | goto out_unlock; | |
c7523083 | 1766 | __ttm_bo_unreserve(bo); |
c58f009e TH |
1767 | |
1768 | out_unlock: | |
1769 | mutex_unlock(&bo->wu_mutex); | |
1770 | return ret; | |
1771 | } |