]>
Commit | Line | Data |
---|---|---|
d38ceaf9 AD |
1 | /* |
2 | * Copyright 2008 Jerome Glisse. | |
3 | * All Rights Reserved. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice (including the next | |
13 | * paragraph) shall be included in all copies or substantial portions of the | |
14 | * Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
22 | * DEALINGS IN THE SOFTWARE. | |
23 | * | |
24 | * Authors: | |
25 | * Jerome Glisse <glisse@freedesktop.org> | |
26 | */ | |
27 | #include <linux/list_sort.h> | |
28 | #include <drm/drmP.h> | |
29 | #include <drm/amdgpu_drm.h> | |
30 | #include "amdgpu.h" | |
31 | #include "amdgpu_trace.h" | |
32 | ||
33 | #define AMDGPU_CS_MAX_PRIORITY 32u | |
34 | #define AMDGPU_CS_NUM_BUCKETS (AMDGPU_CS_MAX_PRIORITY + 1) | |
35 | ||
36 | /* This is based on the bucket sort with O(n) time complexity. | |
37 | * An item with priority "i" is added to bucket[i]. The lists are then | |
38 | * concatenated in descending order. | |
39 | */ | |
40 | struct amdgpu_cs_buckets { | |
41 | struct list_head bucket[AMDGPU_CS_NUM_BUCKETS]; | |
42 | }; | |
43 | ||
44 | static void amdgpu_cs_buckets_init(struct amdgpu_cs_buckets *b) | |
45 | { | |
46 | unsigned i; | |
47 | ||
48 | for (i = 0; i < AMDGPU_CS_NUM_BUCKETS; i++) | |
49 | INIT_LIST_HEAD(&b->bucket[i]); | |
50 | } | |
51 | ||
52 | static void amdgpu_cs_buckets_add(struct amdgpu_cs_buckets *b, | |
53 | struct list_head *item, unsigned priority) | |
54 | { | |
55 | /* Since buffers which appear sooner in the relocation list are | |
56 | * likely to be used more often than buffers which appear later | |
57 | * in the list, the sort mustn't change the ordering of buffers | |
58 | * with the same priority, i.e. it must be stable. | |
59 | */ | |
60 | list_add_tail(item, &b->bucket[min(priority, AMDGPU_CS_MAX_PRIORITY)]); | |
61 | } | |
62 | ||
63 | static void amdgpu_cs_buckets_get_list(struct amdgpu_cs_buckets *b, | |
64 | struct list_head *out_list) | |
65 | { | |
66 | unsigned i; | |
67 | ||
68 | /* Connect the sorted buckets in the output list. */ | |
69 | for (i = 0; i < AMDGPU_CS_NUM_BUCKETS; i++) { | |
70 | list_splice(&b->bucket[i], out_list); | |
71 | } | |
72 | } | |
73 | ||
74 | int amdgpu_cs_get_ring(struct amdgpu_device *adev, u32 ip_type, | |
75 | u32 ip_instance, u32 ring, | |
76 | struct amdgpu_ring **out_ring) | |
77 | { | |
78 | /* Right now all IPs have only one instance - multiple rings. */ | |
79 | if (ip_instance != 0) { | |
80 | DRM_ERROR("invalid ip instance: %d\n", ip_instance); | |
81 | return -EINVAL; | |
82 | } | |
83 | ||
84 | switch (ip_type) { | |
85 | default: | |
86 | DRM_ERROR("unknown ip type: %d\n", ip_type); | |
87 | return -EINVAL; | |
88 | case AMDGPU_HW_IP_GFX: | |
89 | if (ring < adev->gfx.num_gfx_rings) { | |
90 | *out_ring = &adev->gfx.gfx_ring[ring]; | |
91 | } else { | |
92 | DRM_ERROR("only %d gfx rings are supported now\n", | |
93 | adev->gfx.num_gfx_rings); | |
94 | return -EINVAL; | |
95 | } | |
96 | break; | |
97 | case AMDGPU_HW_IP_COMPUTE: | |
98 | if (ring < adev->gfx.num_compute_rings) { | |
99 | *out_ring = &adev->gfx.compute_ring[ring]; | |
100 | } else { | |
101 | DRM_ERROR("only %d compute rings are supported now\n", | |
102 | adev->gfx.num_compute_rings); | |
103 | return -EINVAL; | |
104 | } | |
105 | break; | |
106 | case AMDGPU_HW_IP_DMA: | |
107 | if (ring < 2) { | |
108 | *out_ring = &adev->sdma[ring].ring; | |
109 | } else { | |
110 | DRM_ERROR("only two SDMA rings are supported\n"); | |
111 | return -EINVAL; | |
112 | } | |
113 | break; | |
114 | case AMDGPU_HW_IP_UVD: | |
115 | *out_ring = &adev->uvd.ring; | |
116 | break; | |
117 | case AMDGPU_HW_IP_VCE: | |
118 | if (ring < 2){ | |
119 | *out_ring = &adev->vce.ring[ring]; | |
120 | } else { | |
121 | DRM_ERROR("only two VCE rings are supported\n"); | |
122 | return -EINVAL; | |
123 | } | |
124 | break; | |
125 | } | |
126 | return 0; | |
127 | } | |
128 | ||
129 | int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data) | |
130 | { | |
131 | union drm_amdgpu_cs *cs = data; | |
132 | uint64_t *chunk_array_user; | |
133 | uint64_t *chunk_array = NULL; | |
134 | struct amdgpu_fpriv *fpriv = p->filp->driver_priv; | |
135 | unsigned size, i; | |
136 | int r = 0; | |
137 | ||
138 | if (!cs->in.num_chunks) | |
139 | goto out; | |
140 | ||
141 | p->ctx_id = cs->in.ctx_id; | |
142 | p->bo_list = amdgpu_bo_list_get(fpriv, cs->in.bo_list_handle); | |
143 | ||
144 | /* get chunks */ | |
145 | INIT_LIST_HEAD(&p->validated); | |
146 | chunk_array = kcalloc(cs->in.num_chunks, sizeof(uint64_t), GFP_KERNEL); | |
147 | if (chunk_array == NULL) { | |
148 | r = -ENOMEM; | |
149 | goto out; | |
150 | } | |
151 | ||
152 | chunk_array_user = (uint64_t *)(unsigned long)(cs->in.chunks); | |
153 | if (copy_from_user(chunk_array, chunk_array_user, | |
154 | sizeof(uint64_t)*cs->in.num_chunks)) { | |
155 | r = -EFAULT; | |
156 | goto out; | |
157 | } | |
158 | ||
159 | p->nchunks = cs->in.num_chunks; | |
160 | p->chunks = kcalloc(p->nchunks, sizeof(struct amdgpu_cs_chunk), | |
161 | GFP_KERNEL); | |
162 | if (p->chunks == NULL) { | |
163 | r = -ENOMEM; | |
164 | goto out; | |
165 | } | |
166 | ||
167 | for (i = 0; i < p->nchunks; i++) { | |
168 | struct drm_amdgpu_cs_chunk __user **chunk_ptr = NULL; | |
169 | struct drm_amdgpu_cs_chunk user_chunk; | |
170 | uint32_t __user *cdata; | |
171 | ||
172 | chunk_ptr = (void __user *)(unsigned long)chunk_array[i]; | |
173 | if (copy_from_user(&user_chunk, chunk_ptr, | |
174 | sizeof(struct drm_amdgpu_cs_chunk))) { | |
175 | r = -EFAULT; | |
176 | goto out; | |
177 | } | |
178 | p->chunks[i].chunk_id = user_chunk.chunk_id; | |
179 | p->chunks[i].length_dw = user_chunk.length_dw; | |
180 | if (p->chunks[i].chunk_id == AMDGPU_CHUNK_ID_IB) | |
181 | p->num_ibs++; | |
182 | ||
183 | size = p->chunks[i].length_dw; | |
184 | cdata = (void __user *)(unsigned long)user_chunk.chunk_data; | |
185 | p->chunks[i].user_ptr = cdata; | |
186 | ||
187 | p->chunks[i].kdata = drm_malloc_ab(size, sizeof(uint32_t)); | |
188 | if (p->chunks[i].kdata == NULL) { | |
189 | r = -ENOMEM; | |
190 | goto out; | |
191 | } | |
192 | size *= sizeof(uint32_t); | |
193 | if (copy_from_user(p->chunks[i].kdata, cdata, size)) { | |
194 | r = -EFAULT; | |
195 | goto out; | |
196 | } | |
197 | ||
198 | if (p->chunks[i].chunk_id == AMDGPU_CHUNK_ID_FENCE) { | |
199 | size = sizeof(struct drm_amdgpu_cs_chunk_fence); | |
200 | if (p->chunks[i].length_dw * sizeof(uint32_t) >= size) { | |
201 | uint32_t handle; | |
202 | struct drm_gem_object *gobj; | |
203 | struct drm_amdgpu_cs_chunk_fence *fence_data; | |
204 | ||
205 | fence_data = (void *)p->chunks[i].kdata; | |
206 | handle = fence_data->handle; | |
207 | gobj = drm_gem_object_lookup(p->adev->ddev, | |
208 | p->filp, handle); | |
209 | if (gobj == NULL) { | |
210 | r = -EINVAL; | |
211 | goto out; | |
212 | } | |
213 | ||
214 | p->uf.bo = gem_to_amdgpu_bo(gobj); | |
215 | p->uf.offset = fence_data->offset; | |
216 | } else { | |
217 | r = -EINVAL; | |
218 | goto out; | |
219 | } | |
220 | } | |
221 | } | |
222 | ||
223 | p->ibs = kcalloc(p->num_ibs, sizeof(struct amdgpu_ib), GFP_KERNEL); | |
224 | if (!p->ibs) { | |
225 | r = -ENOMEM; | |
226 | goto out; | |
227 | } | |
228 | ||
229 | p->ib_bos = kcalloc(p->num_ibs, sizeof(struct amdgpu_bo_list_entry), | |
230 | GFP_KERNEL); | |
231 | if (!p->ib_bos) | |
232 | r = -ENOMEM; | |
233 | ||
234 | out: | |
235 | kfree(chunk_array); | |
236 | return r; | |
237 | } | |
238 | ||
239 | /* Returns how many bytes TTM can move per IB. | |
240 | */ | |
241 | static u64 amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev) | |
242 | { | |
243 | u64 real_vram_size = adev->mc.real_vram_size; | |
244 | u64 vram_usage = atomic64_read(&adev->vram_usage); | |
245 | ||
246 | /* This function is based on the current VRAM usage. | |
247 | * | |
248 | * - If all of VRAM is free, allow relocating the number of bytes that | |
249 | * is equal to 1/4 of the size of VRAM for this IB. | |
250 | ||
251 | * - If more than one half of VRAM is occupied, only allow relocating | |
252 | * 1 MB of data for this IB. | |
253 | * | |
254 | * - From 0 to one half of used VRAM, the threshold decreases | |
255 | * linearly. | |
256 | * __________________ | |
257 | * 1/4 of -|\ | | |
258 | * VRAM | \ | | |
259 | * | \ | | |
260 | * | \ | | |
261 | * | \ | | |
262 | * | \ | | |
263 | * | \ | | |
264 | * | \________|1 MB | |
265 | * |----------------| | |
266 | * VRAM 0 % 100 % | |
267 | * used used | |
268 | * | |
269 | * Note: It's a threshold, not a limit. The threshold must be crossed | |
270 | * for buffer relocations to stop, so any buffer of an arbitrary size | |
271 | * can be moved as long as the threshold isn't crossed before | |
272 | * the relocation takes place. We don't want to disable buffer | |
273 | * relocations completely. | |
274 | * | |
275 | * The idea is that buffers should be placed in VRAM at creation time | |
276 | * and TTM should only do a minimum number of relocations during | |
277 | * command submission. In practice, you need to submit at least | |
278 | * a dozen IBs to move all buffers to VRAM if they are in GTT. | |
279 | * | |
280 | * Also, things can get pretty crazy under memory pressure and actual | |
281 | * VRAM usage can change a lot, so playing safe even at 50% does | |
282 | * consistently increase performance. | |
283 | */ | |
284 | ||
285 | u64 half_vram = real_vram_size >> 1; | |
286 | u64 half_free_vram = vram_usage >= half_vram ? 0 : half_vram - vram_usage; | |
287 | u64 bytes_moved_threshold = half_free_vram >> 1; | |
288 | return max(bytes_moved_threshold, 1024*1024ull); | |
289 | } | |
290 | ||
291 | int amdgpu_cs_list_validate(struct amdgpu_cs_parser *p) | |
292 | { | |
293 | struct amdgpu_fpriv *fpriv = p->filp->driver_priv; | |
294 | struct amdgpu_vm *vm = &fpriv->vm; | |
295 | struct amdgpu_device *adev = p->adev; | |
296 | struct amdgpu_bo_list_entry *lobj; | |
297 | struct list_head duplicates; | |
298 | struct amdgpu_bo *bo; | |
299 | u64 bytes_moved = 0, initial_bytes_moved; | |
300 | u64 bytes_moved_threshold = amdgpu_cs_get_threshold_for_moves(adev); | |
301 | int r; | |
302 | ||
303 | INIT_LIST_HEAD(&duplicates); | |
304 | r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true, &duplicates); | |
305 | if (unlikely(r != 0)) { | |
306 | return r; | |
307 | } | |
308 | ||
309 | list_for_each_entry(lobj, &p->validated, tv.head) { | |
310 | bo = lobj->robj; | |
311 | if (!bo->pin_count) { | |
312 | u32 domain = lobj->prefered_domains; | |
313 | u32 current_domain = | |
314 | amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type); | |
315 | ||
316 | /* Check if this buffer will be moved and don't move it | |
317 | * if we have moved too many buffers for this IB already. | |
318 | * | |
319 | * Note that this allows moving at least one buffer of | |
320 | * any size, because it doesn't take the current "bo" | |
321 | * into account. We don't want to disallow buffer moves | |
322 | * completely. | |
323 | */ | |
324 | if (current_domain != AMDGPU_GEM_DOMAIN_CPU && | |
325 | (domain & current_domain) == 0 && /* will be moved */ | |
326 | bytes_moved > bytes_moved_threshold) { | |
327 | /* don't move it */ | |
328 | domain = current_domain; | |
329 | } | |
330 | ||
331 | retry: | |
332 | amdgpu_ttm_placement_from_domain(bo, domain); | |
333 | initial_bytes_moved = atomic64_read(&adev->num_bytes_moved); | |
334 | r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false); | |
335 | bytes_moved += atomic64_read(&adev->num_bytes_moved) - | |
336 | initial_bytes_moved; | |
337 | ||
338 | if (unlikely(r)) { | |
339 | if (r != -ERESTARTSYS && domain != lobj->allowed_domains) { | |
340 | domain = lobj->allowed_domains; | |
341 | goto retry; | |
342 | } | |
343 | ttm_eu_backoff_reservation(&p->ticket, &p->validated); | |
344 | return r; | |
345 | } | |
346 | } | |
347 | lobj->bo_va = amdgpu_vm_bo_find(vm, bo); | |
348 | } | |
349 | return 0; | |
350 | } | |
351 | ||
352 | static int amdgpu_cs_parser_relocs(struct amdgpu_cs_parser *p) | |
353 | { | |
354 | struct amdgpu_fpriv *fpriv = p->filp->driver_priv; | |
355 | struct amdgpu_cs_buckets buckets; | |
356 | bool need_mmap_lock; | |
357 | int i, r; | |
358 | ||
359 | if (p->bo_list == NULL) | |
360 | return 0; | |
361 | ||
362 | need_mmap_lock = p->bo_list->has_userptr; | |
363 | amdgpu_cs_buckets_init(&buckets); | |
364 | for (i = 0; i < p->bo_list->num_entries; i++) | |
365 | amdgpu_cs_buckets_add(&buckets, &p->bo_list->array[i].tv.head, | |
366 | p->bo_list->array[i].priority); | |
367 | ||
368 | amdgpu_cs_buckets_get_list(&buckets, &p->validated); | |
369 | p->vm_bos = amdgpu_vm_get_bos(p->adev, &fpriv->vm, | |
370 | &p->validated); | |
371 | ||
372 | for (i = 0; i < p->num_ibs; i++) { | |
373 | if (!p->ib_bos[i].robj) | |
374 | continue; | |
375 | ||
376 | list_add(&p->ib_bos[i].tv.head, &p->validated); | |
377 | } | |
378 | ||
379 | if (need_mmap_lock) | |
380 | down_read(¤t->mm->mmap_sem); | |
381 | ||
382 | r = amdgpu_cs_list_validate(p); | |
383 | ||
384 | if (need_mmap_lock) | |
385 | up_read(¤t->mm->mmap_sem); | |
386 | ||
387 | return r; | |
388 | } | |
389 | ||
390 | static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p) | |
391 | { | |
392 | struct amdgpu_bo_list_entry *e; | |
393 | int r; | |
394 | ||
395 | list_for_each_entry(e, &p->validated, tv.head) { | |
396 | struct reservation_object *resv = e->robj->tbo.resv; | |
397 | r = amdgpu_sync_resv(p->adev, &p->ibs[0].sync, resv, p->filp); | |
398 | ||
399 | if (r) | |
400 | return r; | |
401 | } | |
402 | return 0; | |
403 | } | |
404 | ||
405 | static int cmp_size_smaller_first(void *priv, struct list_head *a, | |
406 | struct list_head *b) | |
407 | { | |
408 | struct amdgpu_bo_list_entry *la = list_entry(a, struct amdgpu_bo_list_entry, tv.head); | |
409 | struct amdgpu_bo_list_entry *lb = list_entry(b, struct amdgpu_bo_list_entry, tv.head); | |
410 | ||
411 | /* Sort A before B if A is smaller. */ | |
412 | return (int)la->robj->tbo.num_pages - (int)lb->robj->tbo.num_pages; | |
413 | } | |
414 | ||
415 | /** | |
416 | * cs_parser_fini() - clean parser states | |
417 | * @parser: parser structure holding parsing context. | |
418 | * @error: error number | |
419 | * | |
420 | * If error is set than unvalidate buffer, otherwise just free memory | |
421 | * used by parsing context. | |
422 | **/ | |
423 | static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error, bool backoff) | |
424 | { | |
425 | unsigned i; | |
426 | ||
427 | if (!error) { | |
428 | /* Sort the buffer list from the smallest to largest buffer, | |
429 | * which affects the order of buffers in the LRU list. | |
430 | * This assures that the smallest buffers are added first | |
431 | * to the LRU list, so they are likely to be later evicted | |
432 | * first, instead of large buffers whose eviction is more | |
433 | * expensive. | |
434 | * | |
435 | * This slightly lowers the number of bytes moved by TTM | |
436 | * per frame under memory pressure. | |
437 | */ | |
438 | list_sort(NULL, &parser->validated, cmp_size_smaller_first); | |
439 | ||
440 | ttm_eu_fence_buffer_objects(&parser->ticket, | |
441 | &parser->validated, | |
442 | &parser->ibs[parser->num_ibs-1].fence->base); | |
443 | } else if (backoff) { | |
444 | ttm_eu_backoff_reservation(&parser->ticket, | |
445 | &parser->validated); | |
446 | } | |
447 | ||
448 | if (parser->bo_list) | |
449 | amdgpu_bo_list_put(parser->bo_list); | |
450 | drm_free_large(parser->vm_bos); | |
451 | for (i = 0; i < parser->nchunks; i++) | |
452 | drm_free_large(parser->chunks[i].kdata); | |
453 | kfree(parser->chunks); | |
454 | for (i = 0; i < parser->num_ibs; i++) { | |
455 | struct amdgpu_bo *bo = parser->ib_bos[i].robj; | |
456 | amdgpu_ib_free(parser->adev, &parser->ibs[i]); | |
457 | ||
458 | if (bo) | |
459 | drm_gem_object_unreference_unlocked(&bo->gem_base); | |
460 | } | |
461 | kfree(parser->ibs); | |
462 | kfree(parser->ib_bos); | |
463 | if (parser->uf.bo) | |
464 | drm_gem_object_unreference_unlocked(&parser->uf.bo->gem_base); | |
465 | } | |
466 | ||
467 | static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p, | |
468 | struct amdgpu_vm *vm) | |
469 | { | |
470 | struct amdgpu_device *adev = p->adev; | |
471 | struct amdgpu_bo_va *bo_va; | |
472 | struct amdgpu_bo *bo; | |
473 | int i, r; | |
474 | ||
475 | r = amdgpu_vm_update_page_directory(adev, vm); | |
476 | if (r) | |
477 | return r; | |
478 | ||
479 | r = amdgpu_vm_clear_freed(adev, vm); | |
480 | if (r) | |
481 | return r; | |
482 | ||
483 | if (p->bo_list) { | |
484 | for (i = 0; i < p->bo_list->num_entries; i++) { | |
485 | /* ignore duplicates */ | |
486 | bo = p->bo_list->array[i].robj; | |
487 | if (!bo) | |
488 | continue; | |
489 | ||
490 | bo_va = p->bo_list->array[i].bo_va; | |
491 | if (bo_va == NULL) | |
492 | continue; | |
493 | ||
494 | r = amdgpu_vm_bo_update(adev, bo_va, &bo->tbo.mem); | |
495 | if (r) | |
496 | return r; | |
497 | ||
498 | amdgpu_sync_fence(&p->ibs[0].sync, bo_va->last_pt_update); | |
499 | } | |
500 | } | |
501 | ||
502 | for (i = 0; i < p->num_ibs; i++) { | |
503 | bo = p->ib_bos[i].robj; | |
504 | if (!bo) | |
505 | continue; | |
506 | ||
507 | bo_va = p->ib_bos[i].bo_va; | |
508 | if (!bo_va) | |
509 | continue; | |
510 | ||
511 | r = amdgpu_vm_bo_update(adev, bo_va, &bo->tbo.mem); | |
512 | if (r) | |
513 | return r; | |
514 | ||
515 | amdgpu_sync_fence(&p->ibs[0].sync, bo_va->last_pt_update); | |
516 | } | |
517 | return amdgpu_vm_clear_invalids(adev, vm); | |
518 | } | |
519 | ||
520 | static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev, | |
521 | struct amdgpu_cs_parser *parser) | |
522 | { | |
523 | struct amdgpu_fpriv *fpriv = parser->filp->driver_priv; | |
524 | struct amdgpu_vm *vm = &fpriv->vm; | |
525 | struct amdgpu_ring *ring; | |
526 | int i, r; | |
527 | ||
528 | if (parser->num_ibs == 0) | |
529 | return 0; | |
530 | ||
531 | /* Only for UVD/VCE VM emulation */ | |
532 | for (i = 0; i < parser->num_ibs; i++) { | |
533 | ring = parser->ibs[i].ring; | |
534 | if (ring->funcs->parse_cs) { | |
535 | r = amdgpu_ring_parse_cs(ring, parser, i); | |
536 | if (r) | |
537 | return r; | |
538 | } | |
539 | } | |
540 | ||
541 | mutex_lock(&vm->mutex); | |
542 | r = amdgpu_bo_vm_update_pte(parser, vm); | |
543 | if (r) { | |
544 | goto out; | |
545 | } | |
546 | amdgpu_cs_sync_rings(parser); | |
547 | ||
548 | r = amdgpu_ib_schedule(adev, parser->num_ibs, parser->ibs, | |
549 | parser->filp); | |
550 | ||
551 | out: | |
552 | mutex_unlock(&vm->mutex); | |
553 | return r; | |
554 | } | |
555 | ||
556 | static int amdgpu_cs_handle_lockup(struct amdgpu_device *adev, int r) | |
557 | { | |
558 | if (r == -EDEADLK) { | |
559 | r = amdgpu_gpu_reset(adev); | |
560 | if (!r) | |
561 | r = -EAGAIN; | |
562 | } | |
563 | return r; | |
564 | } | |
565 | ||
566 | static int amdgpu_cs_ib_fill(struct amdgpu_device *adev, | |
567 | struct amdgpu_cs_parser *parser) | |
568 | { | |
569 | struct amdgpu_fpriv *fpriv = parser->filp->driver_priv; | |
570 | struct amdgpu_vm *vm = &fpriv->vm; | |
571 | int i, j; | |
572 | int r; | |
573 | ||
574 | for (i = 0, j = 0; i < parser->nchunks && j < parser->num_ibs; i++) { | |
575 | struct amdgpu_cs_chunk *chunk; | |
576 | struct amdgpu_ib *ib; | |
577 | struct drm_amdgpu_cs_chunk_ib *chunk_ib; | |
578 | struct amdgpu_bo_list_entry *ib_bo; | |
579 | struct amdgpu_ring *ring; | |
580 | struct drm_gem_object *gobj; | |
581 | struct amdgpu_bo *aobj; | |
582 | void *kptr; | |
583 | ||
584 | chunk = &parser->chunks[i]; | |
585 | ib = &parser->ibs[j]; | |
586 | chunk_ib = (struct drm_amdgpu_cs_chunk_ib *)chunk->kdata; | |
587 | ||
588 | if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB) | |
589 | continue; | |
590 | ||
591 | gobj = drm_gem_object_lookup(adev->ddev, parser->filp, chunk_ib->handle); | |
592 | if (gobj == NULL) | |
593 | return -ENOENT; | |
594 | aobj = gem_to_amdgpu_bo(gobj); | |
595 | ||
596 | r = amdgpu_cs_get_ring(adev, chunk_ib->ip_type, | |
597 | chunk_ib->ip_instance, chunk_ib->ring, | |
598 | &ring); | |
599 | if (r) { | |
600 | drm_gem_object_unreference_unlocked(gobj); | |
601 | return r; | |
602 | } | |
603 | ||
604 | if (ring->funcs->parse_cs) { | |
605 | r = amdgpu_bo_reserve(aobj, false); | |
606 | if (r) { | |
607 | drm_gem_object_unreference_unlocked(gobj); | |
608 | return r; | |
609 | } | |
610 | ||
611 | r = amdgpu_bo_kmap(aobj, &kptr); | |
612 | if (r) { | |
613 | amdgpu_bo_unreserve(aobj); | |
614 | drm_gem_object_unreference_unlocked(gobj); | |
615 | return r; | |
616 | } | |
617 | ||
618 | r = amdgpu_ib_get(ring, NULL, chunk_ib->ib_bytes, ib); | |
619 | if (r) { | |
620 | DRM_ERROR("Failed to get ib !\n"); | |
621 | amdgpu_bo_unreserve(aobj); | |
622 | drm_gem_object_unreference_unlocked(gobj); | |
623 | return r; | |
624 | } | |
625 | ||
626 | memcpy(ib->ptr, kptr, chunk_ib->ib_bytes); | |
627 | amdgpu_bo_kunmap(aobj); | |
628 | amdgpu_bo_unreserve(aobj); | |
629 | } else { | |
630 | r = amdgpu_ib_get(ring, vm, 0, ib); | |
631 | if (r) { | |
632 | DRM_ERROR("Failed to get ib !\n"); | |
633 | drm_gem_object_unreference_unlocked(gobj); | |
634 | return r; | |
635 | } | |
636 | ||
637 | ib->gpu_addr = chunk_ib->va_start; | |
638 | } | |
639 | ib->length_dw = chunk_ib->ib_bytes / 4; | |
640 | ||
641 | if (chunk_ib->flags & AMDGPU_IB_FLAG_CE) | |
642 | ib->is_const_ib = true; | |
643 | if (chunk_ib->flags & AMDGPU_IB_FLAG_GDS) | |
644 | ib->gds_needed = true; | |
645 | if (ib->ring->current_filp != parser->filp) { | |
646 | ib->ring->need_ctx_switch = true; | |
647 | ib->ring->current_filp = parser->filp; | |
648 | } | |
649 | ||
650 | ib_bo = &parser->ib_bos[j]; | |
651 | ib_bo->robj = aobj; | |
652 | ib_bo->prefered_domains = aobj->initial_domain; | |
653 | ib_bo->allowed_domains = aobj->initial_domain; | |
654 | ib_bo->priority = 0; | |
655 | ib_bo->tv.bo = &aobj->tbo; | |
656 | ib_bo->tv.shared = true; | |
657 | j++; | |
658 | } | |
659 | ||
660 | if (!parser->num_ibs) | |
661 | return 0; | |
662 | ||
663 | /* add GDS resources to first IB */ | |
664 | if (parser->bo_list) { | |
665 | struct amdgpu_bo *gds = parser->bo_list->gds_obj; | |
666 | struct amdgpu_bo *gws = parser->bo_list->gws_obj; | |
667 | struct amdgpu_bo *oa = parser->bo_list->oa_obj; | |
668 | struct amdgpu_ib *ib = &parser->ibs[0]; | |
669 | ||
670 | if (gds) { | |
671 | ib->gds_base = amdgpu_bo_gpu_offset(gds); | |
672 | ib->gds_size = amdgpu_bo_size(gds); | |
673 | } | |
674 | if (gws) { | |
675 | ib->gws_base = amdgpu_bo_gpu_offset(gws); | |
676 | ib->gws_size = amdgpu_bo_size(gws); | |
677 | } | |
678 | if (oa) { | |
679 | ib->oa_base = amdgpu_bo_gpu_offset(oa); | |
680 | ib->oa_size = amdgpu_bo_size(oa); | |
681 | } | |
682 | } | |
683 | ||
684 | /* wrap the last IB with user fence */ | |
685 | if (parser->uf.bo) { | |
686 | struct amdgpu_ib *ib = &parser->ibs[parser->num_ibs - 1]; | |
687 | ||
688 | /* UVD & VCE fw doesn't support user fences */ | |
689 | if (ib->ring->type == AMDGPU_RING_TYPE_UVD || | |
690 | ib->ring->type == AMDGPU_RING_TYPE_VCE) | |
691 | return -EINVAL; | |
692 | ||
693 | ib->user = &parser->uf; | |
694 | } | |
695 | ||
696 | return 0; | |
697 | } | |
698 | ||
699 | int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) | |
700 | { | |
701 | struct amdgpu_device *adev = dev->dev_private; | |
702 | union drm_amdgpu_cs *cs = data; | |
703 | struct amdgpu_cs_parser parser; | |
704 | int r, i; | |
705 | ||
706 | down_read(&adev->exclusive_lock); | |
707 | if (!adev->accel_working) { | |
708 | up_read(&adev->exclusive_lock); | |
709 | return -EBUSY; | |
710 | } | |
711 | /* initialize parser */ | |
712 | memset(&parser, 0, sizeof(struct amdgpu_cs_parser)); | |
713 | parser.filp = filp; | |
714 | parser.adev = adev; | |
715 | r = amdgpu_cs_parser_init(&parser, data); | |
716 | if (r) { | |
717 | DRM_ERROR("Failed to initialize parser !\n"); | |
718 | amdgpu_cs_parser_fini(&parser, r, false); | |
719 | up_read(&adev->exclusive_lock); | |
720 | r = amdgpu_cs_handle_lockup(adev, r); | |
721 | return r; | |
722 | } | |
723 | ||
724 | r = amdgpu_cs_ib_fill(adev, &parser); | |
725 | if (!r) { | |
726 | r = amdgpu_cs_parser_relocs(&parser); | |
727 | if (r && r != -ERESTARTSYS) | |
728 | DRM_ERROR("Failed to parse relocation %d!\n", r); | |
729 | } | |
730 | ||
731 | if (r) { | |
732 | amdgpu_cs_parser_fini(&parser, r, false); | |
733 | up_read(&adev->exclusive_lock); | |
734 | r = amdgpu_cs_handle_lockup(adev, r); | |
735 | return r; | |
736 | } | |
737 | ||
738 | for (i = 0; i < parser.num_ibs; i++) | |
739 | trace_amdgpu_cs(&parser, i); | |
740 | ||
741 | r = amdgpu_cs_ib_vm_chunk(adev, &parser); | |
742 | if (r) { | |
743 | goto out; | |
744 | } | |
745 | ||
746 | cs->out.handle = parser.ibs[parser.num_ibs - 1].fence->seq; | |
747 | out: | |
748 | amdgpu_cs_parser_fini(&parser, r, true); | |
749 | up_read(&adev->exclusive_lock); | |
750 | r = amdgpu_cs_handle_lockup(adev, r); | |
751 | return r; | |
752 | } | |
753 | ||
754 | /** | |
755 | * amdgpu_cs_wait_ioctl - wait for a command submission to finish | |
756 | * | |
757 | * @dev: drm device | |
758 | * @data: data from userspace | |
759 | * @filp: file private | |
760 | * | |
761 | * Wait for the command submission identified by handle to finish. | |
762 | */ | |
763 | int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data, | |
764 | struct drm_file *filp) | |
765 | { | |
766 | union drm_amdgpu_wait_cs *wait = data; | |
767 | struct amdgpu_device *adev = dev->dev_private; | |
768 | uint64_t seq[AMDGPU_MAX_RINGS] = {0}; | |
769 | struct amdgpu_ring *ring = NULL; | |
770 | unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout); | |
771 | long r; | |
772 | ||
773 | r = amdgpu_cs_get_ring(adev, wait->in.ip_type, wait->in.ip_instance, | |
774 | wait->in.ring, &ring); | |
775 | if (r) | |
776 | return r; | |
777 | ||
778 | seq[ring->idx] = wait->in.handle; | |
779 | ||
780 | r = amdgpu_fence_wait_seq_timeout(adev, seq, true, timeout); | |
781 | if (r < 0) | |
782 | return r; | |
783 | ||
784 | memset(wait, 0, sizeof(*wait)); | |
785 | wait->out.status = (r == 0); | |
786 | ||
787 | return 0; | |
788 | } | |
789 | ||
790 | /** | |
791 | * amdgpu_cs_find_bo_va - find bo_va for VM address | |
792 | * | |
793 | * @parser: command submission parser context | |
794 | * @addr: VM address | |
795 | * @bo: resulting BO of the mapping found | |
796 | * | |
797 | * Search the buffer objects in the command submission context for a certain | |
798 | * virtual memory address. Returns allocation structure when found, NULL | |
799 | * otherwise. | |
800 | */ | |
801 | struct amdgpu_bo_va_mapping * | |
802 | amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser, | |
803 | uint64_t addr, struct amdgpu_bo **bo) | |
804 | { | |
805 | struct amdgpu_bo_list_entry *reloc; | |
806 | struct amdgpu_bo_va_mapping *mapping; | |
807 | ||
808 | addr /= AMDGPU_GPU_PAGE_SIZE; | |
809 | ||
810 | list_for_each_entry(reloc, &parser->validated, tv.head) { | |
811 | if (!reloc->bo_va) | |
812 | continue; | |
813 | ||
814 | list_for_each_entry(mapping, &reloc->bo_va->mappings, list) { | |
815 | if (mapping->it.start > addr || | |
816 | addr > mapping->it.last) | |
817 | continue; | |
818 | ||
819 | *bo = reloc->bo_va->bo; | |
820 | return mapping; | |
821 | } | |
822 | } | |
823 | ||
824 | return NULL; | |
825 | } |