1 /*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24
25 #ifdef HAVE_CONFIG_H
26 #include <config.h>
27 #endif
28
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <stdint.h>
32 #include <stdbool.h>
33 #include <string.h>
34 #include <assert.h>
35 #include <errno.h>
36
37 #include <xf86drm.h>
38 #include <xf86atomic.h>
39 #include "libdrm_lists.h"
40 #include "nouveau_drm.h"
41
42 #include "nouveau.h"
43 #include "private.h"
44
45 struct nouveau_pushbuf_krec {
46 struct nouveau_pushbuf_krec *next;
47 struct drm_nouveau_gem_pushbuf_bo buffer[NOUVEAU_GEM_MAX_BUFFERS];
48 struct drm_nouveau_gem_pushbuf_reloc reloc[NOUVEAU_GEM_MAX_RELOCS];
49 struct drm_nouveau_gem_pushbuf_push push[NOUVEAU_GEM_MAX_PUSH];
50 int nr_buffer;
51 int nr_reloc;
52 int nr_push;
53 uint64_t vram_used;
54 uint64_t gart_used;
55 };
56
57 struct nouveau_pushbuf_priv {
58 struct nouveau_pushbuf base;
59 struct nouveau_pushbuf_krec *list;
60 struct nouveau_pushbuf_krec *krec;
61 struct nouveau_list bctx_list;
62 struct nouveau_bo *bo;
63 uint32_t type;
64 uint32_t suffix0;
65 uint32_t suffix1;
66 uint32_t *ptr;
67 uint32_t *bgn;
68 int bo_next;
69 int bo_nr;
70 struct nouveau_bo *bos[];
71 };
72
73 static inline struct nouveau_pushbuf_priv *
nouveau_pushbuf(struct nouveau_pushbuf * push)74 nouveau_pushbuf(struct nouveau_pushbuf *push)
75 {
76 return (struct nouveau_pushbuf_priv *)push;
77 }
78
79 static int pushbuf_validate(struct nouveau_pushbuf *, bool);
80 static int pushbuf_flush(struct nouveau_pushbuf *);
81
82 static bool
pushbuf_kref_fits(struct nouveau_pushbuf * push,struct nouveau_bo * bo,uint32_t * domains)83 pushbuf_kref_fits(struct nouveau_pushbuf *push, struct nouveau_bo *bo,
84 uint32_t *domains)
85 {
86 struct nouveau_pushbuf_priv *nvpb = nouveau_pushbuf(push);
87 struct nouveau_pushbuf_krec *krec = nvpb->krec;
88 struct nouveau_device *dev = push->client->device;
89 struct nouveau_bo *kbo;
90 struct drm_nouveau_gem_pushbuf_bo *kref;
91 int i;
92
93 /* VRAM is the only valid domain. GART and VRAM|GART buffers
94 * are all accounted to GART, so if this doesn't fit in VRAM
95 * straight up, a flush is needed.
96 */
97 if (*domains == NOUVEAU_GEM_DOMAIN_VRAM) {
98 if (krec->vram_used + bo->size > dev->vram_limit)
99 return false;
100 krec->vram_used += bo->size;
101 return true;
102 }
103
104 /* GART or VRAM|GART buffer. Account both of these buffer types
105 * to GART only for the moment, which simplifies things. If the
106 * buffer can fit already, we're done here.
107 */
108 if (krec->gart_used + bo->size <= dev->gart_limit) {
109 krec->gart_used += bo->size;
110 return true;
111 }
112
113 /* Ran out of GART space, if it's a VRAM|GART buffer and it'll
114 * fit into available VRAM, turn it into a VRAM buffer
115 */
116 if ((*domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
117 krec->vram_used + bo->size <= dev->vram_limit) {
118 *domains &= NOUVEAU_GEM_DOMAIN_VRAM;
119 krec->vram_used += bo->size;
120 return true;
121 }
122
123 /* Still couldn't fit the buffer in anywhere, so as a last resort;
124 * scan the buffer list for VRAM|GART buffers and turn them into
125 * VRAM buffers until we have enough space in GART for this one
126 */
127 kref = krec->buffer;
128 for (i = 0; i < krec->nr_buffer; i++, kref++) {
129 if (!(kref->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
130 continue;
131
132 kbo = (void *)(unsigned long)kref->user_priv;
133 if (!(kref->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) ||
134 krec->vram_used + kbo->size > dev->vram_limit)
135 continue;
136
137 kref->valid_domains &= NOUVEAU_GEM_DOMAIN_VRAM;
138 krec->gart_used -= kbo->size;
139 krec->vram_used += kbo->size;
140 if (krec->gart_used + bo->size <= dev->gart_limit) {
141 krec->gart_used += bo->size;
142 return true;
143 }
144 }
145
146 /* Couldn't resolve a placement, need to force a flush */
147 return false;
148 }
149
150 static struct drm_nouveau_gem_pushbuf_bo *
pushbuf_kref(struct nouveau_pushbuf * push,struct nouveau_bo * bo,uint32_t flags)151 pushbuf_kref(struct nouveau_pushbuf *push, struct nouveau_bo *bo,
152 uint32_t flags)
153 {
154 struct nouveau_device *dev = push->client->device;
155 struct nouveau_pushbuf_priv *nvpb = nouveau_pushbuf(push);
156 struct nouveau_pushbuf_krec *krec = nvpb->krec;
157 struct nouveau_pushbuf *fpush;
158 struct drm_nouveau_gem_pushbuf_bo *kref;
159 uint32_t domains, domains_wr, domains_rd;
160
161 domains = 0;
162 if (flags & NOUVEAU_BO_VRAM)
163 domains |= NOUVEAU_GEM_DOMAIN_VRAM;
164 if (flags & NOUVEAU_BO_GART)
165 domains |= NOUVEAU_GEM_DOMAIN_GART;
166 domains_wr = domains * !!(flags & NOUVEAU_BO_WR);
167 domains_rd = domains * !!(flags & NOUVEAU_BO_RD);
168
169 /* if buffer is referenced on another pushbuf that is owned by the
170 * same client, we need to flush the other pushbuf first to ensure
171 * the correct ordering of commands
172 */
173 fpush = cli_push_get(push->client, bo);
174 if (fpush && fpush != push)
175 pushbuf_flush(fpush);
176
177 kref = cli_kref_get(push->client, bo);
178 if (kref) {
179 /* possible conflict in memory types - flush and retry */
180 if (!(kref->valid_domains & domains))
181 return NULL;
182
183 /* VRAM|GART buffer turning into a VRAM buffer. Make sure
184 * it'll fit in VRAM and force a flush if not.
185 */
186 if ((kref->valid_domains & NOUVEAU_GEM_DOMAIN_GART) &&
187 ( domains == NOUVEAU_GEM_DOMAIN_VRAM)) {
188 if (krec->vram_used + bo->size > dev->vram_limit)
189 return NULL;
190 krec->vram_used += bo->size;
191 krec->gart_used -= bo->size;
192 }
193
194 kref->valid_domains &= domains;
195 kref->write_domains |= domains_wr;
196 kref->read_domains |= domains_rd;
197 } else {
198 if (krec->nr_buffer == NOUVEAU_GEM_MAX_BUFFERS ||
199 !pushbuf_kref_fits(push, bo, &domains))
200 return NULL;
201
202 kref = &krec->buffer[krec->nr_buffer++];
203 kref->user_priv = (unsigned long)bo;
204 kref->handle = bo->handle;
205 kref->valid_domains = domains;
206 kref->write_domains = domains_wr;
207 kref->read_domains = domains_rd;
208 kref->presumed.valid = 1;
209 kref->presumed.offset = bo->offset;
210 if (bo->flags & NOUVEAU_BO_VRAM)
211 kref->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
212 else
213 kref->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
214
215 cli_kref_set(push->client, bo, kref, push);
216 atomic_inc(&nouveau_bo(bo)->refcnt);
217 }
218
219 return kref;
220 }
221
222 static uint32_t
pushbuf_krel(struct nouveau_pushbuf * push,struct nouveau_bo * bo,uint32_t data,uint32_t flags,uint32_t vor,uint32_t tor)223 pushbuf_krel(struct nouveau_pushbuf *push, struct nouveau_bo *bo,
224 uint32_t data, uint32_t flags, uint32_t vor, uint32_t tor)
225 {
226 struct nouveau_pushbuf_priv *nvpb = nouveau_pushbuf(push);
227 struct nouveau_pushbuf_krec *krec = nvpb->krec;
228 struct drm_nouveau_gem_pushbuf_reloc *krel;
229 struct drm_nouveau_gem_pushbuf_bo *pkref;
230 struct drm_nouveau_gem_pushbuf_bo *bkref;
231 uint32_t reloc = data;
232
233 pkref = cli_kref_get(push->client, nvpb->bo);
234 bkref = cli_kref_get(push->client, bo);
235 krel = &krec->reloc[krec->nr_reloc++];
236
237 assert(pkref);
238 assert(bkref);
239 krel->reloc_bo_index = pkref - krec->buffer;
240 krel->reloc_bo_offset = (push->cur - nvpb->ptr) * 4;
241 krel->bo_index = bkref - krec->buffer;
242 krel->flags = 0;
243 krel->data = data;
244 krel->vor = vor;
245 krel->tor = tor;
246
247 if (flags & NOUVEAU_BO_LOW) {
248 reloc = (bkref->presumed.offset + data);
249 krel->flags |= NOUVEAU_GEM_RELOC_LOW;
250 } else
251 if (flags & NOUVEAU_BO_HIGH) {
252 reloc = (bkref->presumed.offset + data) >> 32;
253 krel->flags |= NOUVEAU_GEM_RELOC_HIGH;
254 }
255 if (flags & NOUVEAU_BO_OR) {
256 if (bkref->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM)
257 reloc |= vor;
258 else
259 reloc |= tor;
260 krel->flags |= NOUVEAU_GEM_RELOC_OR;
261 }
262
263 return reloc;
264 }
265
266 static void
pushbuf_dump(struct nouveau_pushbuf_krec * krec,int krec_id,int chid)267 pushbuf_dump(struct nouveau_pushbuf_krec *krec, int krec_id, int chid)
268 {
269 struct drm_nouveau_gem_pushbuf_reloc *krel;
270 struct drm_nouveau_gem_pushbuf_push *kpsh;
271 struct drm_nouveau_gem_pushbuf_bo *kref;
272 struct nouveau_bo *bo;
273 uint32_t *bgn, *end;
274 int i;
275
276 err("ch%d: krec %d pushes %d bufs %d relocs %d\n", chid,
277 krec_id, krec->nr_push, krec->nr_buffer, krec->nr_reloc);
278
279 kref = krec->buffer;
280 for (i = 0; i < krec->nr_buffer; i++, kref++) {
281 err("ch%d: buf %08x %08x %08x %08x %08x\n", chid, i,
282 kref->handle, kref->valid_domains,
283 kref->read_domains, kref->write_domains);
284 }
285
286 krel = krec->reloc;
287 for (i = 0; i < krec->nr_reloc; i++, krel++) {
288 err("ch%d: rel %08x %08x %08x %08x %08x %08x %08x\n",
289 chid, krel->reloc_bo_index, krel->reloc_bo_offset,
290 krel->bo_index, krel->flags, krel->data,
291 krel->vor, krel->tor);
292 }
293
294 kpsh = krec->push;
295 for (i = 0; i < krec->nr_push; i++, kpsh++) {
296 kref = krec->buffer + kpsh->bo_index;
297 bo = (void *)(unsigned long)kref->user_priv;
298 bgn = (uint32_t *)((char *)bo->map + kpsh->offset);
299 end = bgn + (kpsh->length /4);
300
301 err("ch%d: psh %08x %010llx %010llx\n", chid, kpsh->bo_index,
302 (unsigned long long)kpsh->offset,
303 (unsigned long long)(kpsh->offset + kpsh->length));
304 while (bgn < end)
305 err("\t0x%08x\n", *bgn++);
306 }
307 }
308
309 static int
pushbuf_submit(struct nouveau_pushbuf * push,struct nouveau_object * chan)310 pushbuf_submit(struct nouveau_pushbuf *push, struct nouveau_object *chan)
311 {
312 struct nouveau_pushbuf_priv *nvpb = nouveau_pushbuf(push);
313 struct nouveau_pushbuf_krec *krec = nvpb->list;
314 struct nouveau_device *dev = push->client->device;
315 struct nouveau_drm *drm = nouveau_drm(&dev->object);
316 struct drm_nouveau_gem_pushbuf_bo_presumed *info;
317 struct drm_nouveau_gem_pushbuf_bo *kref;
318 struct drm_nouveau_gem_pushbuf req;
319 struct nouveau_fifo *fifo = chan->data;
320 struct nouveau_bo *bo;
321 int krec_id = 0;
322 int ret = 0, i;
323
324 if (chan->oclass != NOUVEAU_FIFO_CHANNEL_CLASS)
325 return -EINVAL;
326
327 if (push->kick_notify)
328 push->kick_notify(push);
329
330 nouveau_pushbuf_data(push, NULL, 0, 0);
331
332 while (krec && krec->nr_push) {
333 req.channel = fifo->channel;
334 req.nr_buffers = krec->nr_buffer;
335 req.buffers = (uint64_t)(unsigned long)krec->buffer;
336 req.nr_relocs = krec->nr_reloc;
337 req.nr_push = krec->nr_push;
338 req.relocs = (uint64_t)(unsigned long)krec->reloc;
339 req.push = (uint64_t)(unsigned long)krec->push;
340 req.suffix0 = nvpb->suffix0;
341 req.suffix1 = nvpb->suffix1;
342 req.vram_available = 0; /* for valgrind */
343 req.gart_available = 0;
344
345 if (dbg_on(0))
346 pushbuf_dump(krec, krec_id++, fifo->channel);
347
348 #ifndef SIMULATE
349 ret = drmCommandWriteRead(drm->fd, DRM_NOUVEAU_GEM_PUSHBUF,
350 &req, sizeof(req));
351 nvpb->suffix0 = req.suffix0;
352 nvpb->suffix1 = req.suffix1;
353 dev->vram_limit = (req.vram_available *
354 nouveau_device(dev)->vram_limit_percent) / 100;
355 dev->gart_limit = (req.gart_available *
356 nouveau_device(dev)->gart_limit_percent) / 100;
357 #else
358 if (dbg_on(31))
359 ret = -EINVAL;
360 #endif
361
362 if (ret) {
363 err("kernel rejected pushbuf: %s\n", strerror(-ret));
364 pushbuf_dump(krec, krec_id++, fifo->channel);
365 break;
366 }
367
368 kref = krec->buffer;
369 for (i = 0; i < krec->nr_buffer; i++, kref++) {
370 bo = (void *)(unsigned long)kref->user_priv;
371
372 info = &kref->presumed;
373 if (!info->valid) {
374 bo->flags &= ~NOUVEAU_BO_APER;
375 if (info->domain == NOUVEAU_GEM_DOMAIN_VRAM)
376 bo->flags |= NOUVEAU_BO_VRAM;
377 else
378 bo->flags |= NOUVEAU_BO_GART;
379 bo->offset = info->offset;
380 }
381
382 if (kref->write_domains)
383 nouveau_bo(bo)->access |= NOUVEAU_BO_WR;
384 if (kref->read_domains)
385 nouveau_bo(bo)->access |= NOUVEAU_BO_RD;
386 }
387
388 krec = krec->next;
389 }
390
391 return ret;
392 }
393
394 static int
pushbuf_flush(struct nouveau_pushbuf * push)395 pushbuf_flush(struct nouveau_pushbuf *push)
396 {
397 struct nouveau_pushbuf_priv *nvpb = nouveau_pushbuf(push);
398 struct nouveau_pushbuf_krec *krec = nvpb->krec;
399 struct drm_nouveau_gem_pushbuf_bo *kref;
400 struct nouveau_bufctx *bctx, *btmp;
401 struct nouveau_bo *bo;
402 int ret = 0, i;
403
404 if (push->channel) {
405 ret = pushbuf_submit(push, push->channel);
406 } else {
407 nouveau_pushbuf_data(push, NULL, 0, 0);
408 krec->next = malloc(sizeof(*krec));
409 nvpb->krec = krec->next;
410 }
411
412 kref = krec->buffer;
413 for (i = 0; i < krec->nr_buffer; i++, kref++) {
414 bo = (void *)(unsigned long)kref->user_priv;
415 cli_kref_set(push->client, bo, NULL, NULL);
416 if (push->channel)
417 nouveau_bo_ref(NULL, &bo);
418 }
419
420 krec = nvpb->krec;
421 krec->vram_used = 0;
422 krec->gart_used = 0;
423 krec->nr_buffer = 0;
424 krec->nr_reloc = 0;
425 krec->nr_push = 0;
426
427 DRMLISTFOREACHENTRYSAFE(bctx, btmp, &nvpb->bctx_list, head) {
428 DRMLISTJOIN(&bctx->current, &bctx->pending);
429 DRMINITLISTHEAD(&bctx->current);
430 DRMLISTDELINIT(&bctx->head);
431 }
432
433 return ret;
434 }
435
436 static void
pushbuf_refn_fail(struct nouveau_pushbuf * push,int sref,int srel)437 pushbuf_refn_fail(struct nouveau_pushbuf *push, int sref, int srel)
438 {
439 struct nouveau_pushbuf_priv *nvpb = nouveau_pushbuf(push);
440 struct nouveau_pushbuf_krec *krec = nvpb->krec;
441 struct drm_nouveau_gem_pushbuf_bo *kref;
442
443 kref = krec->buffer + sref;
444 while (krec->nr_buffer-- > sref) {
445 struct nouveau_bo *bo = (void *)(unsigned long)kref->user_priv;
446 cli_kref_set(push->client, bo, NULL, NULL);
447 nouveau_bo_ref(NULL, &bo);
448 kref++;
449 }
450 krec->nr_buffer = sref;
451 krec->nr_reloc = srel;
452 }
453
454 static int
pushbuf_refn(struct nouveau_pushbuf * push,bool retry,struct nouveau_pushbuf_refn * refs,int nr)455 pushbuf_refn(struct nouveau_pushbuf *push, bool retry,
456 struct nouveau_pushbuf_refn *refs, int nr)
457 {
458 struct nouveau_pushbuf_priv *nvpb = nouveau_pushbuf(push);
459 struct nouveau_pushbuf_krec *krec = nvpb->krec;
460 struct drm_nouveau_gem_pushbuf_bo *kref;
461 int sref = krec->nr_buffer;
462 int ret = 0, i;
463
464 for (i = 0; i < nr; i++) {
465 kref = pushbuf_kref(push, refs[i].bo, refs[i].flags);
466 if (!kref) {
467 ret = -ENOSPC;
468 break;
469 }
470 }
471
472 if (ret) {
473 pushbuf_refn_fail(push, sref, krec->nr_reloc);
474 if (retry) {
475 pushbuf_flush(push);
476 nouveau_pushbuf_space(push, 0, 0, 0);
477 return pushbuf_refn(push, false, refs, nr);
478 }
479 }
480
481 return ret;
482 }
483
484 static int
pushbuf_validate(struct nouveau_pushbuf * push,bool retry)485 pushbuf_validate(struct nouveau_pushbuf *push, bool retry)
486 {
487 struct nouveau_pushbuf_priv *nvpb = nouveau_pushbuf(push);
488 struct nouveau_pushbuf_krec *krec = nvpb->krec;
489 struct drm_nouveau_gem_pushbuf_bo *kref;
490 struct nouveau_bufctx *bctx = push->bufctx;
491 struct nouveau_bufref *bref;
492 int relocs = bctx ? bctx->relocs * 2: 0;
493 int sref, srel, ret;
494
495 ret = nouveau_pushbuf_space(push, relocs, relocs, 0);
496 if (ret || bctx == NULL)
497 return ret;
498
499 sref = krec->nr_buffer;
500 srel = krec->nr_reloc;
501
502 DRMLISTDEL(&bctx->head);
503 DRMLISTADD(&bctx->head, &nvpb->bctx_list);
504
505 DRMLISTFOREACHENTRY(bref, &bctx->pending, thead) {
506 kref = pushbuf_kref(push, bref->bo, bref->flags);
507 if (!kref) {
508 ret = -ENOSPC;
509 break;
510 }
511
512 if (bref->packet) {
513 pushbuf_krel(push, bref->bo, bref->packet, 0, 0, 0);
514 *push->cur++ = 0;
515 pushbuf_krel(push, bref->bo, bref->data, bref->flags,
516 bref->vor, bref->tor);
517 *push->cur++ = 0;
518 }
519 }
520
521 DRMLISTJOIN(&bctx->pending, &bctx->current);
522 DRMINITLISTHEAD(&bctx->pending);
523
524 if (ret) {
525 pushbuf_refn_fail(push, sref, srel);
526 if (retry) {
527 pushbuf_flush(push);
528 return pushbuf_validate(push, false);
529 }
530 }
531
532 return ret;
533 }
534
535 int
nouveau_pushbuf_new(struct nouveau_client * client,struct nouveau_object * chan,int nr,uint32_t size,bool immediate,struct nouveau_pushbuf ** ppush)536 nouveau_pushbuf_new(struct nouveau_client *client, struct nouveau_object *chan,
537 int nr, uint32_t size, bool immediate,
538 struct nouveau_pushbuf **ppush)
539 {
540 struct nouveau_drm *drm = nouveau_drm(&client->device->object);
541 struct nouveau_fifo *fifo = chan->data;
542 struct nouveau_pushbuf_priv *nvpb;
543 struct nouveau_pushbuf *push;
544 struct drm_nouveau_gem_pushbuf req = {};
545 int ret;
546
547 if (chan->oclass != NOUVEAU_FIFO_CHANNEL_CLASS)
548 return -EINVAL;
549
550 /* nop pushbuf call, to get the current "return to main" sequence
551 * we need to append to the pushbuf on early chipsets
552 */
553 req.channel = fifo->channel;
554 req.nr_push = 0;
555 ret = drmCommandWriteRead(drm->fd, DRM_NOUVEAU_GEM_PUSHBUF,
556 &req, sizeof(req));
557 if (ret)
558 return ret;
559
560 nvpb = calloc(1, sizeof(*nvpb) + nr * sizeof(*nvpb->bos));
561 if (!nvpb)
562 return -ENOMEM;
563
564 #ifndef SIMULATE
565 nvpb->suffix0 = req.suffix0;
566 nvpb->suffix1 = req.suffix1;
567 #else
568 nvpb->suffix0 = 0xffffffff;
569 nvpb->suffix1 = 0xffffffff;
570 #endif
571 nvpb->krec = calloc(1, sizeof(*nvpb->krec));
572 nvpb->list = nvpb->krec;
573 if (!nvpb->krec) {
574 free(nvpb);
575 return -ENOMEM;
576 }
577
578 push = &nvpb->base;
579 push->client = client;
580 push->channel = immediate ? chan : NULL;
581 push->flags = NOUVEAU_BO_RD;
582 if (fifo->pushbuf & NOUVEAU_GEM_DOMAIN_GART) {
583 push->flags |= NOUVEAU_BO_GART;
584 nvpb->type = NOUVEAU_BO_GART;
585 } else
586 if (fifo->pushbuf & NOUVEAU_GEM_DOMAIN_VRAM) {
587 push->flags |= NOUVEAU_BO_VRAM;
588 nvpb->type = NOUVEAU_BO_VRAM;
589 }
590 nvpb->type |= NOUVEAU_BO_MAP;
591
592 for (nvpb->bo_nr = 0; nvpb->bo_nr < nr; nvpb->bo_nr++) {
593 ret = nouveau_bo_new(client->device, nvpb->type, 0, size,
594 NULL, &nvpb->bos[nvpb->bo_nr]);
595 if (ret) {
596 nouveau_pushbuf_del(&push);
597 return ret;
598 }
599 }
600
601 DRMINITLISTHEAD(&nvpb->bctx_list);
602 *ppush = push;
603 return 0;
604 }
605
606 void
nouveau_pushbuf_del(struct nouveau_pushbuf ** ppush)607 nouveau_pushbuf_del(struct nouveau_pushbuf **ppush)
608 {
609 struct nouveau_pushbuf_priv *nvpb = nouveau_pushbuf(*ppush);
610 if (nvpb) {
611 struct drm_nouveau_gem_pushbuf_bo *kref;
612 struct nouveau_pushbuf_krec *krec;
613 while ((krec = nvpb->list)) {
614 kref = krec->buffer;
615 while (krec->nr_buffer--) {
616 unsigned long priv = kref++->user_priv;
617 struct nouveau_bo *bo = (void *)priv;
618 cli_kref_set(nvpb->base.client, bo, NULL, NULL);
619 nouveau_bo_ref(NULL, &bo);
620 }
621 nvpb->list = krec->next;
622 free(krec);
623 }
624 while (nvpb->bo_nr--)
625 nouveau_bo_ref(NULL, &nvpb->bos[nvpb->bo_nr]);
626 nouveau_bo_ref(NULL, &nvpb->bo);
627 free(nvpb);
628 }
629 *ppush = NULL;
630 }
631
632 struct nouveau_bufctx *
nouveau_pushbuf_bufctx(struct nouveau_pushbuf * push,struct nouveau_bufctx * ctx)633 nouveau_pushbuf_bufctx(struct nouveau_pushbuf *push, struct nouveau_bufctx *ctx)
634 {
635 struct nouveau_bufctx *prev = push->bufctx;
636 push->bufctx = ctx;
637 return prev;
638 }
639
640 int
nouveau_pushbuf_space(struct nouveau_pushbuf * push,uint32_t dwords,uint32_t relocs,uint32_t pushes)641 nouveau_pushbuf_space(struct nouveau_pushbuf *push,
642 uint32_t dwords, uint32_t relocs, uint32_t pushes)
643 {
644 struct nouveau_pushbuf_priv *nvpb = nouveau_pushbuf(push);
645 struct nouveau_pushbuf_krec *krec = nvpb->krec;
646 struct nouveau_client *client = push->client;
647 struct nouveau_bo *bo = NULL;
648 bool flushed = false;
649 int ret = 0;
650
651 /* switch to next buffer if insufficient space in the current one */
652 if (push->cur + dwords >= push->end) {
653 if (nvpb->bo_next < nvpb->bo_nr) {
654 nouveau_bo_ref(nvpb->bos[nvpb->bo_next++], &bo);
655 if (nvpb->bo_next == nvpb->bo_nr && push->channel)
656 nvpb->bo_next = 0;
657 } else {
658 ret = nouveau_bo_new(client->device, nvpb->type, 0,
659 nvpb->bos[0]->size, NULL, &bo);
660 if (ret)
661 return ret;
662 }
663 }
664
665 /* make sure there's always enough space to queue up the pending
666 * data in the pushbuf proper
667 */
668 pushes++;
669
670 /* need to flush if we've run out of space on an immediate pushbuf,
671 * if the new buffer won't fit, or if the kernel push/reloc limits
672 * have been hit
673 */
674 if ((bo && ( push->channel ||
675 !pushbuf_kref(push, bo, push->flags))) ||
676 krec->nr_reloc + relocs >= NOUVEAU_GEM_MAX_RELOCS ||
677 krec->nr_push + pushes >= NOUVEAU_GEM_MAX_PUSH) {
678 if (nvpb->bo && krec->nr_buffer)
679 pushbuf_flush(push);
680 flushed = true;
681 }
682
683 /* if necessary, switch to new buffer */
684 if (bo) {
685 ret = nouveau_bo_map(bo, NOUVEAU_BO_WR, push->client);
686 if (ret)
687 return ret;
688
689 nouveau_pushbuf_data(push, NULL, 0, 0);
690 nouveau_bo_ref(bo, &nvpb->bo);
691 nouveau_bo_ref(NULL, &bo);
692
693 nvpb->bgn = nvpb->bo->map;
694 nvpb->ptr = nvpb->bgn;
695 push->cur = nvpb->bgn;
696 push->end = push->cur + (nvpb->bo->size / 4);
697 push->end -= 2 + push->rsvd_kick; /* space for suffix */
698 }
699
700 pushbuf_kref(push, nvpb->bo, push->flags);
701 return flushed ? pushbuf_validate(push, false) : 0;
702 }
703
704 void
nouveau_pushbuf_data(struct nouveau_pushbuf * push,struct nouveau_bo * bo,uint64_t offset,uint64_t length)705 nouveau_pushbuf_data(struct nouveau_pushbuf *push, struct nouveau_bo *bo,
706 uint64_t offset, uint64_t length)
707 {
708 struct nouveau_pushbuf_priv *nvpb = nouveau_pushbuf(push);
709 struct nouveau_pushbuf_krec *krec = nvpb->krec;
710 struct drm_nouveau_gem_pushbuf_push *kpsh;
711 struct drm_nouveau_gem_pushbuf_bo *kref;
712
713 if (bo != nvpb->bo && nvpb->bgn != push->cur) {
714 if (nvpb->suffix0 || nvpb->suffix1) {
715 *push->cur++ = nvpb->suffix0;
716 *push->cur++ = nvpb->suffix1;
717 }
718
719 nouveau_pushbuf_data(push, nvpb->bo,
720 (nvpb->bgn - nvpb->ptr) * 4,
721 (push->cur - nvpb->bgn) * 4);
722 nvpb->bgn = push->cur;
723 }
724
725 if (bo) {
726 kref = cli_kref_get(push->client, bo);
727 assert(kref);
728 kpsh = &krec->push[krec->nr_push++];
729 kpsh->bo_index = kref - krec->buffer;
730 kpsh->offset = offset;
731 kpsh->length = length;
732 }
733 }
734
735 int
nouveau_pushbuf_refn(struct nouveau_pushbuf * push,struct nouveau_pushbuf_refn * refs,int nr)736 nouveau_pushbuf_refn(struct nouveau_pushbuf *push,
737 struct nouveau_pushbuf_refn *refs, int nr)
738 {
739 return pushbuf_refn(push, true, refs, nr);
740 }
741
742 void
nouveau_pushbuf_reloc(struct nouveau_pushbuf * push,struct nouveau_bo * bo,uint32_t data,uint32_t flags,uint32_t vor,uint32_t tor)743 nouveau_pushbuf_reloc(struct nouveau_pushbuf *push, struct nouveau_bo *bo,
744 uint32_t data, uint32_t flags, uint32_t vor, uint32_t tor)
745 {
746 *push->cur = pushbuf_krel(push, bo, data, flags, vor, tor);
747 push->cur++;
748 }
749
750 int
nouveau_pushbuf_validate(struct nouveau_pushbuf * push)751 nouveau_pushbuf_validate(struct nouveau_pushbuf *push)
752 {
753 return pushbuf_validate(push, true);
754 }
755
756 uint32_t
nouveau_pushbuf_refd(struct nouveau_pushbuf * push,struct nouveau_bo * bo)757 nouveau_pushbuf_refd(struct nouveau_pushbuf *push, struct nouveau_bo *bo)
758 {
759 struct drm_nouveau_gem_pushbuf_bo *kref;
760 uint32_t flags = 0;
761
762 if (cli_push_get(push->client, bo) == push) {
763 kref = cli_kref_get(push->client, bo);
764 assert(kref);
765 if (kref->read_domains)
766 flags |= NOUVEAU_BO_RD;
767 if (kref->write_domains)
768 flags |= NOUVEAU_BO_WR;
769 }
770
771 return flags;
772 }
773
774 int
nouveau_pushbuf_kick(struct nouveau_pushbuf * push,struct nouveau_object * chan)775 nouveau_pushbuf_kick(struct nouveau_pushbuf *push, struct nouveau_object *chan)
776 {
777 if (!push->channel)
778 return pushbuf_submit(push, chan);
779 pushbuf_flush(push);
780 return pushbuf_validate(push, false);
781 }
782