1
2
3
4
5
6#include <drm/drm_file.h>
7#include <linux/dma-fence-array.h>
8#include <linux/file.h>
9#include <linux/pm_runtime.h>
10#include <linux/dma-resv.h>
11#include <linux/sync_file.h>
12#include <linux/uaccess.h>
13#include <linux/vmalloc.h>
14
15#include "etnaviv_cmdbuf.h"
16#include "etnaviv_drv.h"
17#include "etnaviv_gpu.h"
18#include "etnaviv_gem.h"
19#include "etnaviv_perfmon.h"
20#include "etnaviv_sched.h"
21
22
23
24
25
26#define BO_INVALID_FLAGS ~(ETNA_SUBMIT_BO_READ | ETNA_SUBMIT_BO_WRITE)
27
28#define BO_LOCKED 0x4000
29#define BO_PINNED 0x2000
30
31static struct etnaviv_gem_submit *submit_create(struct drm_device *dev,
32 struct etnaviv_gpu *gpu, size_t nr_bos, size_t nr_pmrs)
33{
34 struct etnaviv_gem_submit *submit;
35 size_t sz = size_vstruct(nr_bos, sizeof(submit->bos[0]), sizeof(*submit));
36
37 submit = kzalloc(sz, GFP_KERNEL);
38 if (!submit)
39 return NULL;
40
41 submit->pmrs = kcalloc(nr_pmrs, sizeof(struct etnaviv_perfmon_request),
42 GFP_KERNEL);
43 if (!submit->pmrs) {
44 kfree(submit);
45 return NULL;
46 }
47 submit->nr_pmrs = nr_pmrs;
48
49 submit->gpu = gpu;
50 kref_init(&submit->refcount);
51
52 return submit;
53}
54
55static int submit_lookup_objects(struct etnaviv_gem_submit *submit,
56 struct drm_file *file, struct drm_etnaviv_gem_submit_bo *submit_bos,
57 unsigned nr_bos)
58{
59 struct drm_etnaviv_gem_submit_bo *bo;
60 unsigned i;
61 int ret = 0;
62
63 spin_lock(&file->table_lock);
64
65 for (i = 0, bo = submit_bos; i < nr_bos; i++, bo++) {
66 struct drm_gem_object *obj;
67
68 if (bo->flags & BO_INVALID_FLAGS) {
69 DRM_ERROR("invalid flags: %x\n", bo->flags);
70 ret = -EINVAL;
71 goto out_unlock;
72 }
73
74 submit->bos[i].flags = bo->flags;
75 if (submit->flags & ETNA_SUBMIT_SOFTPIN) {
76 if (bo->presumed < ETNAVIV_SOFTPIN_START_ADDRESS) {
77 DRM_ERROR("invalid softpin address\n");
78 ret = -EINVAL;
79 goto out_unlock;
80 }
81 submit->bos[i].va = bo->presumed;
82 }
83
84
85
86
87 obj = idr_find(&file->object_idr, bo->handle);
88 if (!obj) {
89 DRM_ERROR("invalid handle %u at index %u\n",
90 bo->handle, i);
91 ret = -EINVAL;
92 goto out_unlock;
93 }
94
95
96
97
98
99 drm_gem_object_get(obj);
100
101 submit->bos[i].obj = to_etnaviv_bo(obj);
102 }
103
104out_unlock:
105 submit->nr_bos = i;
106 spin_unlock(&file->table_lock);
107
108 return ret;
109}
110
111static void submit_unlock_object(struct etnaviv_gem_submit *submit, int i)
112{
113 if (submit->bos[i].flags & BO_LOCKED) {
114 struct drm_gem_object *obj = &submit->bos[i].obj->base;
115
116 dma_resv_unlock(obj->resv);
117 submit->bos[i].flags &= ~BO_LOCKED;
118 }
119}
120
121static int submit_lock_objects(struct etnaviv_gem_submit *submit,
122 struct ww_acquire_ctx *ticket)
123{
124 int contended, slow_locked = -1, i, ret = 0;
125
126retry:
127 for (i = 0; i < submit->nr_bos; i++) {
128 struct drm_gem_object *obj = &submit->bos[i].obj->base;
129
130 if (slow_locked == i)
131 slow_locked = -1;
132
133 contended = i;
134
135 if (!(submit->bos[i].flags & BO_LOCKED)) {
136 ret = dma_resv_lock_interruptible(obj->resv, ticket);
137 if (ret == -EALREADY)
138 DRM_ERROR("BO at index %u already on submit list\n",
139 i);
140 if (ret)
141 goto fail;
142 submit->bos[i].flags |= BO_LOCKED;
143 }
144 }
145
146 ww_acquire_done(ticket);
147
148 return 0;
149
150fail:
151 for (; i >= 0; i--)
152 submit_unlock_object(submit, i);
153
154 if (slow_locked > 0)
155 submit_unlock_object(submit, slow_locked);
156
157 if (ret == -EDEADLK) {
158 struct drm_gem_object *obj;
159
160 obj = &submit->bos[contended].obj->base;
161
162
163 ret = dma_resv_lock_slow_interruptible(obj->resv, ticket);
164 if (!ret) {
165 submit->bos[contended].flags |= BO_LOCKED;
166 slow_locked = contended;
167 goto retry;
168 }
169 }
170
171 return ret;
172}
173
174static int submit_fence_sync(struct etnaviv_gem_submit *submit)
175{
176 int i, ret = 0;
177
178 for (i = 0; i < submit->nr_bos; i++) {
179 struct etnaviv_gem_submit_bo *bo = &submit->bos[i];
180 struct dma_resv *robj = bo->obj->base.resv;
181
182 ret = dma_resv_reserve_fences(robj, 1);
183 if (ret)
184 return ret;
185
186 if (submit->flags & ETNA_SUBMIT_NO_IMPLICIT)
187 continue;
188
189 ret = drm_sched_job_add_implicit_dependencies(&submit->sched_job,
190 &bo->obj->base,
191 bo->flags & ETNA_SUBMIT_BO_WRITE);
192 if (ret)
193 return ret;
194 }
195
196 return ret;
197}
198
199static void submit_attach_object_fences(struct etnaviv_gem_submit *submit)
200{
201 int i;
202
203 for (i = 0; i < submit->nr_bos; i++) {
204 struct drm_gem_object *obj = &submit->bos[i].obj->base;
205 bool write = submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE;
206
207 dma_resv_add_fence(obj->resv, submit->out_fence, write ?
208 DMA_RESV_USAGE_WRITE : DMA_RESV_USAGE_READ);
209 submit_unlock_object(submit, i);
210 }
211}
212
213static int submit_pin_objects(struct etnaviv_gem_submit *submit)
214{
215 int i, ret = 0;
216
217 for (i = 0; i < submit->nr_bos; i++) {
218 struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
219 struct etnaviv_vram_mapping *mapping;
220
221 mapping = etnaviv_gem_mapping_get(&etnaviv_obj->base,
222 submit->mmu_context,
223 submit->bos[i].va);
224 if (IS_ERR(mapping)) {
225 ret = PTR_ERR(mapping);
226 break;
227 }
228
229 if ((submit->flags & ETNA_SUBMIT_SOFTPIN) &&
230 submit->bos[i].va != mapping->iova) {
231 etnaviv_gem_mapping_unreference(mapping);
232 return -EINVAL;
233 }
234
235 atomic_inc(&etnaviv_obj->gpu_active);
236
237 submit->bos[i].flags |= BO_PINNED;
238 submit->bos[i].mapping = mapping;
239 }
240
241 return ret;
242}
243
244static int submit_bo(struct etnaviv_gem_submit *submit, u32 idx,
245 struct etnaviv_gem_submit_bo **bo)
246{
247 if (idx >= submit->nr_bos) {
248 DRM_ERROR("invalid buffer index: %u (out of %u)\n",
249 idx, submit->nr_bos);
250 return -EINVAL;
251 }
252
253 *bo = &submit->bos[idx];
254
255 return 0;
256}
257
258
259static int submit_reloc(struct etnaviv_gem_submit *submit, void *stream,
260 u32 size, const struct drm_etnaviv_gem_submit_reloc *relocs,
261 u32 nr_relocs)
262{
263 u32 i, last_offset = 0;
264 u32 *ptr = stream;
265 int ret;
266
267
268 if ((submit->flags & ETNA_SUBMIT_SOFTPIN) && nr_relocs != 0)
269 return -EINVAL;
270
271 for (i = 0; i < nr_relocs; i++) {
272 const struct drm_etnaviv_gem_submit_reloc *r = relocs + i;
273 struct etnaviv_gem_submit_bo *bo;
274 u32 off;
275
276 if (unlikely(r->flags)) {
277 DRM_ERROR("invalid reloc flags\n");
278 return -EINVAL;
279 }
280
281 if (r->submit_offset % 4) {
282 DRM_ERROR("non-aligned reloc offset: %u\n",
283 r->submit_offset);
284 return -EINVAL;
285 }
286
287
288 off = r->submit_offset / 4;
289
290 if ((off >= size ) ||
291 (off < last_offset)) {
292 DRM_ERROR("invalid offset %u at reloc %u\n", off, i);
293 return -EINVAL;
294 }
295
296 ret = submit_bo(submit, r->reloc_idx, &bo);
297 if (ret)
298 return ret;
299
300 if (r->reloc_offset > bo->obj->base.size - sizeof(*ptr)) {
301 DRM_ERROR("relocation %u outside object\n", i);
302 return -EINVAL;
303 }
304
305 ptr[off] = bo->mapping->iova + r->reloc_offset;
306
307 last_offset = off;
308 }
309
310 return 0;
311}
312
313static int submit_perfmon_validate(struct etnaviv_gem_submit *submit,
314 u32 exec_state, const struct drm_etnaviv_gem_submit_pmr *pmrs)
315{
316 u32 i;
317
318 for (i = 0; i < submit->nr_pmrs; i++) {
319 const struct drm_etnaviv_gem_submit_pmr *r = pmrs + i;
320 struct etnaviv_gem_submit_bo *bo;
321 int ret;
322
323 ret = submit_bo(submit, r->read_idx, &bo);
324 if (ret)
325 return ret;
326
327
328 if (r->read_offset == 0) {
329 DRM_ERROR("perfmon request: offset is 0");
330 return -EINVAL;
331 }
332
333 if (r->read_offset >= bo->obj->base.size - sizeof(u32)) {
334 DRM_ERROR("perfmon request: offset %u outside object", i);
335 return -EINVAL;
336 }
337
338 if (r->flags & ~(ETNA_PM_PROCESS_PRE | ETNA_PM_PROCESS_POST)) {
339 DRM_ERROR("perfmon request: flags are not valid");
340 return -EINVAL;
341 }
342
343 if (etnaviv_pm_req_validate(r, exec_state)) {
344 DRM_ERROR("perfmon request: domain or signal not valid");
345 return -EINVAL;
346 }
347
348 submit->pmrs[i].flags = r->flags;
349 submit->pmrs[i].domain = r->domain;
350 submit->pmrs[i].signal = r->signal;
351 submit->pmrs[i].sequence = r->sequence;
352 submit->pmrs[i].offset = r->read_offset;
353 submit->pmrs[i].bo_vma = etnaviv_gem_vmap(&bo->obj->base);
354 }
355
356 return 0;
357}
358
359static void submit_cleanup(struct kref *kref)
360{
361 struct etnaviv_gem_submit *submit =
362 container_of(kref, struct etnaviv_gem_submit, refcount);
363 unsigned i;
364
365 if (submit->runtime_resumed)
366 pm_runtime_put_autosuspend(submit->gpu->dev);
367
368 if (submit->cmdbuf.suballoc)
369 etnaviv_cmdbuf_free(&submit->cmdbuf);
370
371 if (submit->mmu_context)
372 etnaviv_iommu_context_put(submit->mmu_context);
373
374 if (submit->prev_mmu_context)
375 etnaviv_iommu_context_put(submit->prev_mmu_context);
376
377 for (i = 0; i < submit->nr_bos; i++) {
378 struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
379
380
381 if (submit->bos[i].flags & BO_PINNED) {
382 etnaviv_gem_mapping_unreference(submit->bos[i].mapping);
383 atomic_dec(&etnaviv_obj->gpu_active);
384 submit->bos[i].mapping = NULL;
385 submit->bos[i].flags &= ~BO_PINNED;
386 }
387
388
389 submit_unlock_object(submit, i);
390 drm_gem_object_put(&etnaviv_obj->base);
391 }
392
393 wake_up_all(&submit->gpu->fence_event);
394
395 if (submit->out_fence) {
396
397 mutex_lock(&submit->gpu->fence_lock);
398 idr_remove(&submit->gpu->fence_idr, submit->out_fence_id);
399 mutex_unlock(&submit->gpu->fence_lock);
400 dma_fence_put(submit->out_fence);
401 }
402 kfree(submit->pmrs);
403 kfree(submit);
404}
405
406void etnaviv_submit_put(struct etnaviv_gem_submit *submit)
407{
408 kref_put(&submit->refcount, submit_cleanup);
409}
410
411int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
412 struct drm_file *file)
413{
414 struct etnaviv_file_private *ctx = file->driver_priv;
415 struct etnaviv_drm_private *priv = dev->dev_private;
416 struct drm_etnaviv_gem_submit *args = data;
417 struct drm_etnaviv_gem_submit_reloc *relocs;
418 struct drm_etnaviv_gem_submit_pmr *pmrs;
419 struct drm_etnaviv_gem_submit_bo *bos;
420 struct etnaviv_gem_submit *submit;
421 struct etnaviv_gpu *gpu;
422 struct sync_file *sync_file = NULL;
423 struct ww_acquire_ctx ticket;
424 int out_fence_fd = -1;
425 void *stream;
426 int ret;
427
428 if (args->pipe >= ETNA_MAX_PIPES)
429 return -EINVAL;
430
431 gpu = priv->gpu[args->pipe];
432 if (!gpu)
433 return -ENXIO;
434
435 if (args->stream_size % 4) {
436 DRM_ERROR("non-aligned cmdstream buffer size: %u\n",
437 args->stream_size);
438 return -EINVAL;
439 }
440
441 if (args->exec_state != ETNA_PIPE_3D &&
442 args->exec_state != ETNA_PIPE_2D &&
443 args->exec_state != ETNA_PIPE_VG) {
444 DRM_ERROR("invalid exec_state: 0x%x\n", args->exec_state);
445 return -EINVAL;
446 }
447
448 if (args->flags & ~ETNA_SUBMIT_FLAGS) {
449 DRM_ERROR("invalid flags: 0x%x\n", args->flags);
450 return -EINVAL;
451 }
452
453 if ((args->flags & ETNA_SUBMIT_SOFTPIN) &&
454 priv->mmu_global->version != ETNAVIV_IOMMU_V2) {
455 DRM_ERROR("softpin requested on incompatible MMU\n");
456 return -EINVAL;
457 }
458
459 if (args->stream_size > SZ_128K || args->nr_relocs > SZ_128K ||
460 args->nr_bos > SZ_128K || args->nr_pmrs > 128) {
461 DRM_ERROR("submit arguments out of size limits\n");
462 return -EINVAL;
463 }
464
465
466
467
468
469 bos = kvmalloc_array(args->nr_bos, sizeof(*bos), GFP_KERNEL);
470 relocs = kvmalloc_array(args->nr_relocs, sizeof(*relocs), GFP_KERNEL);
471 pmrs = kvmalloc_array(args->nr_pmrs, sizeof(*pmrs), GFP_KERNEL);
472 stream = kvmalloc_array(1, args->stream_size, GFP_KERNEL);
473 if (!bos || !relocs || !pmrs || !stream) {
474 ret = -ENOMEM;
475 goto err_submit_cmds;
476 }
477
478 ret = copy_from_user(bos, u64_to_user_ptr(args->bos),
479 args->nr_bos * sizeof(*bos));
480 if (ret) {
481 ret = -EFAULT;
482 goto err_submit_cmds;
483 }
484
485 ret = copy_from_user(relocs, u64_to_user_ptr(args->relocs),
486 args->nr_relocs * sizeof(*relocs));
487 if (ret) {
488 ret = -EFAULT;
489 goto err_submit_cmds;
490 }
491
492 ret = copy_from_user(pmrs, u64_to_user_ptr(args->pmrs),
493 args->nr_pmrs * sizeof(*pmrs));
494 if (ret) {
495 ret = -EFAULT;
496 goto err_submit_cmds;
497 }
498
499 ret = copy_from_user(stream, u64_to_user_ptr(args->stream),
500 args->stream_size);
501 if (ret) {
502 ret = -EFAULT;
503 goto err_submit_cmds;
504 }
505
506 if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
507 out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
508 if (out_fence_fd < 0) {
509 ret = out_fence_fd;
510 goto err_submit_cmds;
511 }
512 }
513
514 ww_acquire_init(&ticket, &reservation_ww_class);
515
516 submit = submit_create(dev, gpu, args->nr_bos, args->nr_pmrs);
517 if (!submit) {
518 ret = -ENOMEM;
519 goto err_submit_ww_acquire;
520 }
521
522 ret = etnaviv_cmdbuf_init(priv->cmdbuf_suballoc, &submit->cmdbuf,
523 ALIGN(args->stream_size, 8) + 8);
524 if (ret)
525 goto err_submit_put;
526
527 submit->ctx = file->driver_priv;
528 submit->mmu_context = etnaviv_iommu_context_get(submit->ctx->mmu);
529 submit->exec_state = args->exec_state;
530 submit->flags = args->flags;
531
532 ret = drm_sched_job_init(&submit->sched_job,
533 &ctx->sched_entity[args->pipe],
534 submit->ctx);
535 if (ret)
536 goto err_submit_put;
537
538 ret = submit_lookup_objects(submit, file, bos, args->nr_bos);
539 if (ret)
540 goto err_submit_job;
541
542 if ((priv->mmu_global->version != ETNAVIV_IOMMU_V2) &&
543 !etnaviv_cmd_validate_one(gpu, stream, args->stream_size / 4,
544 relocs, args->nr_relocs)) {
545 ret = -EINVAL;
546 goto err_submit_job;
547 }
548
549 if (args->flags & ETNA_SUBMIT_FENCE_FD_IN) {
550 struct dma_fence *in_fence = sync_file_get_fence(args->fence_fd);
551 if (!in_fence) {
552 ret = -EINVAL;
553 goto err_submit_job;
554 }
555
556 ret = drm_sched_job_add_dependency(&submit->sched_job,
557 in_fence);
558 if (ret)
559 goto err_submit_job;
560 }
561
562 ret = submit_pin_objects(submit);
563 if (ret)
564 goto err_submit_job;
565
566 ret = submit_reloc(submit, stream, args->stream_size / 4,
567 relocs, args->nr_relocs);
568 if (ret)
569 goto err_submit_job;
570
571 ret = submit_perfmon_validate(submit, args->exec_state, pmrs);
572 if (ret)
573 goto err_submit_job;
574
575 memcpy(submit->cmdbuf.vaddr, stream, args->stream_size);
576
577 ret = submit_lock_objects(submit, &ticket);
578 if (ret)
579 goto err_submit_job;
580
581 ret = submit_fence_sync(submit);
582 if (ret)
583 goto err_submit_job;
584
585 ret = etnaviv_sched_push_job(submit);
586 if (ret)
587 goto err_submit_job;
588
589 submit_attach_object_fences(submit);
590
591 if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
592
593
594
595
596
597
598 sync_file = sync_file_create(submit->out_fence);
599 if (!sync_file) {
600 ret = -ENOMEM;
601
602
603
604
605
606 goto err_submit_put;
607 }
608 fd_install(out_fence_fd, sync_file->file);
609 }
610
611 args->fence_fd = out_fence_fd;
612 args->fence = submit->out_fence_id;
613
614err_submit_job:
615 if (ret)
616 drm_sched_job_cleanup(&submit->sched_job);
617err_submit_put:
618 etnaviv_submit_put(submit);
619
620err_submit_ww_acquire:
621 ww_acquire_fini(&ticket);
622
623err_submit_cmds:
624 if (ret && (out_fence_fd >= 0))
625 put_unused_fd(out_fence_fd);
626 kvfree(stream);
627 kvfree(bos);
628 kvfree(relocs);
629 kvfree(pmrs);
630
631 return ret;
632}
633
