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 #include <stdio.h>
26 #include <stdlib.h>
27 #include <stdint.h>
28 #include <string.h>
29 #include <strings.h>
30 #include <stdbool.h>
31 #include <assert.h>
32 #include <errno.h>
33 #include <fcntl.h>
34
35 #include <xf86drm.h>
36 #include <xf86atomic.h>
37 #include "libdrm_macros.h"
38 #include "libdrm_lists.h"
39 #include "nouveau_drm.h"
40
41 #include "nouveau.h"
42 #include "private.h"
43
44 #include "nvif/class.h"
45 #include "nvif/cl0080.h"
46 #include "nvif/ioctl.h"
47 #include "nvif/unpack.h"
48
49 #ifdef DEBUG
50 drm_private uint32_t nouveau_debug = 0;
51
52 static void
debug_init(char * args)53 debug_init(char *args)
54 {
55 if (args) {
56 int n = strtol(args, NULL, 0);
57 if (n >= 0)
58 nouveau_debug = n;
59 }
60 }
61 #endif
62
63 static int
nouveau_object_ioctl(struct nouveau_object * obj,void * data,uint32_t size)64 nouveau_object_ioctl(struct nouveau_object *obj, void *data, uint32_t size)
65 {
66 struct nouveau_drm *drm = nouveau_drm(obj);
67 union {
68 struct nvif_ioctl_v0 v0;
69 } *args = data;
70 uint32_t argc = size;
71 int ret = -ENOSYS;
72
73 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
74 if (!obj->length) {
75 if (obj != &drm->client)
76 args->v0.object = (unsigned long)(void *)obj;
77 else
78 args->v0.object = 0;
79 args->v0.owner = NVIF_IOCTL_V0_OWNER_ANY;
80 args->v0.route = 0x00;
81 } else {
82 args->v0.route = 0xff;
83 args->v0.token = obj->handle;
84 }
85 } else
86 return ret;
87
88 return drmCommandWriteRead(drm->fd, DRM_NOUVEAU_NVIF, args, argc);
89 }
90
91 int
nouveau_object_mthd(struct nouveau_object * obj,uint32_t mthd,void * data,uint32_t size)92 nouveau_object_mthd(struct nouveau_object *obj,
93 uint32_t mthd, void *data, uint32_t size)
94 {
95 struct nouveau_drm *drm = nouveau_drm(obj);
96 struct {
97 struct nvif_ioctl_v0 ioctl;
98 struct nvif_ioctl_mthd_v0 mthd;
99 } *args;
100 uint32_t argc = sizeof(*args) + size;
101 uint8_t stack[128];
102 int ret;
103
104 if (!drm->nvif)
105 return -ENOSYS;
106
107 if (argc > sizeof(stack)) {
108 if (!(args = malloc(argc)))
109 return -ENOMEM;
110 } else {
111 args = (void *)stack;
112 }
113 args->ioctl.version = 0;
114 args->ioctl.type = NVIF_IOCTL_V0_MTHD;
115 args->mthd.version = 0;
116 args->mthd.method = mthd;
117
118 memcpy(args->mthd.data, data, size);
119 ret = nouveau_object_ioctl(obj, args, argc);
120 memcpy(data, args->mthd.data, size);
121 if (args != (void *)stack)
122 free(args);
123 return ret;
124 }
125
126 void
nouveau_object_sclass_put(struct nouveau_sclass ** psclass)127 nouveau_object_sclass_put(struct nouveau_sclass **psclass)
128 {
129 free(*psclass);
130 *psclass = NULL;
131 }
132
133 int
nouveau_object_sclass_get(struct nouveau_object * obj,struct nouveau_sclass ** psclass)134 nouveau_object_sclass_get(struct nouveau_object *obj,
135 struct nouveau_sclass **psclass)
136 {
137 struct nouveau_drm *drm = nouveau_drm(obj);
138 struct {
139 struct nvif_ioctl_v0 ioctl;
140 struct nvif_ioctl_sclass_v0 sclass;
141 } *args = NULL;
142 struct nouveau_sclass *sclass;
143 int ret, cnt = 0, i;
144 uint32_t size;
145
146 if (!drm->nvif)
147 return abi16_sclass(obj, psclass);
148
149 while (1) {
150 size = sizeof(*args) + cnt * sizeof(args->sclass.oclass[0]);
151 if (!(args = malloc(size)))
152 return -ENOMEM;
153 args->ioctl.version = 0;
154 args->ioctl.type = NVIF_IOCTL_V0_SCLASS;
155 args->sclass.version = 0;
156 args->sclass.count = cnt;
157
158 ret = nouveau_object_ioctl(obj, args, size);
159 if (ret == 0 && args->sclass.count <= cnt)
160 break;
161 cnt = args->sclass.count;
162 free(args);
163 if (ret != 0)
164 return ret;
165 }
166
167 if ((sclass = calloc(args->sclass.count, sizeof(*sclass)))) {
168 for (i = 0; i < args->sclass.count; i++) {
169 sclass[i].oclass = args->sclass.oclass[i].oclass;
170 sclass[i].minver = args->sclass.oclass[i].minver;
171 sclass[i].maxver = args->sclass.oclass[i].maxver;
172 }
173 *psclass = sclass;
174 ret = args->sclass.count;
175 } else {
176 ret = -ENOMEM;
177 }
178
179 free(args);
180 return ret;
181 }
182
183 int
nouveau_object_mclass(struct nouveau_object * obj,const struct nouveau_mclass * mclass)184 nouveau_object_mclass(struct nouveau_object *obj,
185 const struct nouveau_mclass *mclass)
186 {
187 struct nouveau_sclass *sclass;
188 int ret = -ENODEV;
189 int cnt, i, j;
190
191 cnt = nouveau_object_sclass_get(obj, &sclass);
192 if (cnt < 0)
193 return cnt;
194
195 for (i = 0; ret < 0 && mclass[i].oclass; i++) {
196 for (j = 0; j < cnt; j++) {
197 if (mclass[i].oclass == sclass[j].oclass &&
198 mclass[i].version >= sclass[j].minver &&
199 mclass[i].version <= sclass[j].maxver) {
200 ret = i;
201 break;
202 }
203 }
204 }
205
206 nouveau_object_sclass_put(&sclass);
207 return ret;
208 }
209
210 static void
nouveau_object_fini(struct nouveau_object * obj)211 nouveau_object_fini(struct nouveau_object *obj)
212 {
213 struct {
214 struct nvif_ioctl_v0 ioctl;
215 struct nvif_ioctl_del del;
216 } args = {
217 .ioctl.type = NVIF_IOCTL_V0_DEL,
218 };
219
220 if (obj->data) {
221 abi16_delete(obj);
222 free(obj->data);
223 obj->data = NULL;
224 return;
225 }
226
227 nouveau_object_ioctl(obj, &args, sizeof(args));
228 }
229
230 static int
nouveau_object_init(struct nouveau_object * parent,uint32_t handle,int32_t oclass,void * data,uint32_t size,struct nouveau_object * obj)231 nouveau_object_init(struct nouveau_object *parent, uint32_t handle,
232 int32_t oclass, void *data, uint32_t size,
233 struct nouveau_object *obj)
234 {
235 struct nouveau_drm *drm = nouveau_drm(parent);
236 struct {
237 struct nvif_ioctl_v0 ioctl;
238 struct nvif_ioctl_new_v0 new;
239 } *args;
240 uint32_t argc = sizeof(*args) + size;
241 int (*func)(struct nouveau_object *);
242 int ret = -ENOSYS;
243
244 obj->parent = parent;
245 obj->handle = handle;
246 obj->oclass = oclass;
247 obj->length = 0;
248 obj->data = NULL;
249
250 if (!abi16_object(obj, &func) && drm->nvif) {
251 if (!(args = malloc(argc)))
252 return -ENOMEM;
253 args->ioctl.version = 0;
254 args->ioctl.type = NVIF_IOCTL_V0_NEW;
255 args->new.version = 0;
256 args->new.route = NVIF_IOCTL_V0_ROUTE_NVIF;
257 args->new.token = (unsigned long)(void *)obj;
258 args->new.object = (unsigned long)(void *)obj;
259 args->new.handle = handle;
260 args->new.oclass = oclass;
261 memcpy(args->new.data, data, size);
262 ret = nouveau_object_ioctl(parent, args, argc);
263 memcpy(data, args->new.data, size);
264 free(args);
265 } else
266 if (func) {
267 obj->length = size ? size : sizeof(struct nouveau_object *);
268 if (!(obj->data = malloc(obj->length)))
269 return -ENOMEM;
270 if (data)
271 memcpy(obj->data, data, obj->length);
272 *(struct nouveau_object **)obj->data = obj;
273
274 ret = func(obj);
275 }
276
277 if (ret) {
278 nouveau_object_fini(obj);
279 return ret;
280 }
281
282 return 0;
283 }
284
285 int
nouveau_object_new(struct nouveau_object * parent,uint64_t handle,uint32_t oclass,void * data,uint32_t length,struct nouveau_object ** pobj)286 nouveau_object_new(struct nouveau_object *parent, uint64_t handle,
287 uint32_t oclass, void *data, uint32_t length,
288 struct nouveau_object **pobj)
289 {
290 struct nouveau_object *obj;
291 int ret;
292
293 if (!(obj = malloc(sizeof(*obj))))
294 return -ENOMEM;
295
296 ret = nouveau_object_init(parent, handle, oclass, data, length, obj);
297 if (ret) {
298 free(obj);
299 return ret;
300 }
301
302 *pobj = obj;
303 return 0;
304 }
305
306 void
nouveau_object_del(struct nouveau_object ** pobj)307 nouveau_object_del(struct nouveau_object **pobj)
308 {
309 struct nouveau_object *obj = *pobj;
310 if (obj) {
311 nouveau_object_fini(obj);
312 free(obj);
313 *pobj = NULL;
314 }
315 }
316
317 void
nouveau_drm_del(struct nouveau_drm ** pdrm)318 nouveau_drm_del(struct nouveau_drm **pdrm)
319 {
320 free(*pdrm);
321 *pdrm = NULL;
322 }
323
324 int
nouveau_drm_new(int fd,struct nouveau_drm ** pdrm)325 nouveau_drm_new(int fd, struct nouveau_drm **pdrm)
326 {
327 struct nouveau_drm *drm;
328 drmVersionPtr ver;
329
330 #ifdef DEBUG
331 debug_init(getenv("NOUVEAU_LIBDRM_DEBUG"));
332 #endif
333
334 if (!(drm = calloc(1, sizeof(*drm))))
335 return -ENOMEM;
336 drm->fd = fd;
337
338 if (!(ver = drmGetVersion(fd))) {
339 nouveau_drm_del(&drm);
340 return -EINVAL;
341 }
342 *pdrm = drm;
343
344 drm->version = (ver->version_major << 24) |
345 (ver->version_minor << 8) |
346 ver->version_patchlevel;
347 drm->nvif = (drm->version >= 0x01000301);
348 drmFreeVersion(ver);
349 return 0;
350 }
351
352 /* this is the old libdrm's version of nouveau_device_wrap(), the symbol
353 * is kept here to prevent AIGLX from crashing if the DDX is linked against
354 * the new libdrm, but the DRI driver against the old
355 */
356 int
nouveau_device_open_existing(struct nouveau_device ** pdev,int close,int fd,drm_context_t ctx)357 nouveau_device_open_existing(struct nouveau_device **pdev, int close, int fd,
358 drm_context_t ctx)
359 {
360 return -EACCES;
361 }
362
363 int
nouveau_device_new(struct nouveau_object * parent,int32_t oclass,void * data,uint32_t size,struct nouveau_device ** pdev)364 nouveau_device_new(struct nouveau_object *parent, int32_t oclass,
365 void *data, uint32_t size, struct nouveau_device **pdev)
366 {
367 struct nv_device_info_v0 info = {};
368 union {
369 struct nv_device_v0 v0;
370 } *args = data;
371 uint32_t argc = size;
372 struct nouveau_drm *drm = nouveau_drm(parent);
373 struct nouveau_device_priv *nvdev;
374 struct nouveau_device *dev;
375 uint64_t v;
376 char *tmp;
377 int ret = -ENOSYS;
378
379 if (oclass != NV_DEVICE ||
380 nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))
381 return ret;
382
383 if (!(nvdev = calloc(1, sizeof(*nvdev))))
384 return -ENOMEM;
385 dev = *pdev = &nvdev->base;
386 dev->fd = -1;
387
388 if (drm->nvif) {
389 ret = nouveau_object_init(parent, 0, oclass, args, argc,
390 &dev->object);
391 if (ret)
392 goto done;
393
394 info.version = 0;
395
396 ret = nouveau_object_mthd(&dev->object, NV_DEVICE_V0_INFO,
397 &info, sizeof(info));
398 if (ret)
399 goto done;
400
401 nvdev->base.chipset = info.chipset;
402 nvdev->have_bo_usage = true;
403 } else
404 if (args->v0.device == ~0ULL) {
405 nvdev->base.object.parent = &drm->client;
406 nvdev->base.object.handle = ~0ULL;
407 nvdev->base.object.oclass = NOUVEAU_DEVICE_CLASS;
408 nvdev->base.object.length = ~0;
409
410 ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_CHIPSET_ID, &v);
411 if (ret)
412 goto done;
413 nvdev->base.chipset = v;
414
415 ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_HAS_BO_USAGE, &v);
416 if (ret == 0)
417 nvdev->have_bo_usage = (v != 0);
418 } else
419 return -ENOSYS;
420
421 ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_FB_SIZE, &v);
422 if (ret)
423 goto done;
424 nvdev->base.vram_size = v;
425
426 ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_AGP_SIZE, &v);
427 if (ret)
428 goto done;
429 nvdev->base.gart_size = v;
430
431 tmp = getenv("NOUVEAU_LIBDRM_VRAM_LIMIT_PERCENT");
432 if (tmp)
433 nvdev->vram_limit_percent = atoi(tmp);
434 else
435 nvdev->vram_limit_percent = 80;
436
437 nvdev->base.vram_limit =
438 (nvdev->base.vram_size * nvdev->vram_limit_percent) / 100;
439
440 tmp = getenv("NOUVEAU_LIBDRM_GART_LIMIT_PERCENT");
441 if (tmp)
442 nvdev->gart_limit_percent = atoi(tmp);
443 else
444 nvdev->gart_limit_percent = 80;
445
446 nvdev->base.gart_limit =
447 (nvdev->base.gart_size * nvdev->gart_limit_percent) / 100;
448
449 ret = pthread_mutex_init(&nvdev->lock, NULL);
450 DRMINITLISTHEAD(&nvdev->bo_list);
451 done:
452 if (ret)
453 nouveau_device_del(pdev);
454 return ret;
455 }
456
457 int
nouveau_device_wrap(int fd,int close,struct nouveau_device ** pdev)458 nouveau_device_wrap(int fd, int close, struct nouveau_device **pdev)
459 {
460 struct nouveau_drm *drm;
461 struct nouveau_device_priv *nvdev;
462 int ret;
463
464 ret = nouveau_drm_new(fd, &drm);
465 if (ret)
466 return ret;
467 drm->nvif = false;
468
469 ret = nouveau_device_new(&drm->client, NV_DEVICE,
470 &(struct nv_device_v0) {
471 .device = ~0ULL,
472 }, sizeof(struct nv_device_v0), pdev);
473 if (ret) {
474 nouveau_drm_del(&drm);
475 return ret;
476 }
477
478 nvdev = nouveau_device(*pdev);
479 nvdev->base.fd = drm->fd;
480 nvdev->base.drm_version = drm->version;
481 nvdev->close = close;
482 return 0;
483 }
484
485 int
nouveau_device_open(const char * busid,struct nouveau_device ** pdev)486 nouveau_device_open(const char *busid, struct nouveau_device **pdev)
487 {
488 int ret = -ENODEV, fd = drmOpen("nouveau", busid);
489 if (fd >= 0) {
490 ret = nouveau_device_wrap(fd, 1, pdev);
491 if (ret)
492 drmClose(fd);
493 }
494 return ret;
495 }
496
497 void
nouveau_device_del(struct nouveau_device ** pdev)498 nouveau_device_del(struct nouveau_device **pdev)
499 {
500 struct nouveau_device_priv *nvdev = nouveau_device(*pdev);
501 if (nvdev) {
502 free(nvdev->client);
503 pthread_mutex_destroy(&nvdev->lock);
504 if (nvdev->base.fd >= 0) {
505 struct nouveau_drm *drm =
506 nouveau_drm(&nvdev->base.object);
507 nouveau_drm_del(&drm);
508 if (nvdev->close)
509 drmClose(nvdev->base.fd);
510 }
511 free(nvdev);
512 *pdev = NULL;
513 }
514 }
515
516 int
nouveau_getparam(struct nouveau_device * dev,uint64_t param,uint64_t * value)517 nouveau_getparam(struct nouveau_device *dev, uint64_t param, uint64_t *value)
518 {
519 struct nouveau_drm *drm = nouveau_drm(&dev->object);
520 struct drm_nouveau_getparam r = { .param = param };
521 int fd = drm->fd, ret =
522 drmCommandWriteRead(fd, DRM_NOUVEAU_GETPARAM, &r, sizeof(r));
523 *value = r.value;
524 return ret;
525 }
526
527 int
nouveau_setparam(struct nouveau_device * dev,uint64_t param,uint64_t value)528 nouveau_setparam(struct nouveau_device *dev, uint64_t param, uint64_t value)
529 {
530 struct nouveau_drm *drm = nouveau_drm(&dev->object);
531 struct drm_nouveau_setparam r = { .param = param, .value = value };
532 return drmCommandWrite(drm->fd, DRM_NOUVEAU_SETPARAM, &r, sizeof(r));
533 }
534
535 int
nouveau_client_new(struct nouveau_device * dev,struct nouveau_client ** pclient)536 nouveau_client_new(struct nouveau_device *dev, struct nouveau_client **pclient)
537 {
538 struct nouveau_device_priv *nvdev = nouveau_device(dev);
539 struct nouveau_client_priv *pcli;
540 int id = 0, i, ret = -ENOMEM;
541 uint32_t *clients;
542
543 pthread_mutex_lock(&nvdev->lock);
544
545 for (i = 0; i < nvdev->nr_client; i++) {
546 id = ffs(nvdev->client[i]) - 1;
547 if (id >= 0)
548 goto out;
549 }
550
551 clients = realloc(nvdev->client, sizeof(uint32_t) * (i + 1));
552 if (!clients)
553 goto unlock;
554 nvdev->client = clients;
555 nvdev->client[i] = 0;
556 nvdev->nr_client++;
557
558 out:
559 pcli = calloc(1, sizeof(*pcli));
560 if (pcli) {
561 nvdev->client[i] |= (1 << id);
562 pcli->base.device = dev;
563 pcli->base.id = (i * 32) + id;
564 ret = 0;
565 }
566
567 *pclient = &pcli->base;
568
569 unlock:
570 pthread_mutex_unlock(&nvdev->lock);
571 return ret;
572 }
573
574 void
nouveau_client_del(struct nouveau_client ** pclient)575 nouveau_client_del(struct nouveau_client **pclient)
576 {
577 struct nouveau_client_priv *pcli = nouveau_client(*pclient);
578 struct nouveau_device_priv *nvdev;
579 if (pcli) {
580 int id = pcli->base.id;
581 nvdev = nouveau_device(pcli->base.device);
582 pthread_mutex_lock(&nvdev->lock);
583 nvdev->client[id / 32] &= ~(1 << (id % 32));
584 pthread_mutex_unlock(&nvdev->lock);
585 free(pcli->kref);
586 free(pcli);
587 }
588 }
589
590 static void
nouveau_bo_del(struct nouveau_bo * bo)591 nouveau_bo_del(struct nouveau_bo *bo)
592 {
593 struct nouveau_drm *drm = nouveau_drm(&bo->device->object);
594 struct nouveau_device_priv *nvdev = nouveau_device(bo->device);
595 struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
596 struct drm_gem_close req = { .handle = bo->handle };
597
598 if (nvbo->head.next) {
599 pthread_mutex_lock(&nvdev->lock);
600 if (atomic_read(&nvbo->refcnt) == 0) {
601 DRMLISTDEL(&nvbo->head);
602 /*
603 * This bo has to be closed with the lock held because
604 * gem handles are not refcounted. If a shared bo is
605 * closed and re-opened in another thread a race
606 * against DRM_IOCTL_GEM_OPEN or drmPrimeFDToHandle
607 * might cause the bo to be closed accidentally while
608 * re-importing.
609 */
610 drmIoctl(drm->fd, DRM_IOCTL_GEM_CLOSE, &req);
611 }
612 pthread_mutex_unlock(&nvdev->lock);
613 } else {
614 drmIoctl(drm->fd, DRM_IOCTL_GEM_CLOSE, &req);
615 }
616 if (bo->map)
617 drm_munmap(bo->map, bo->size);
618 free(nvbo);
619 }
620
621 int
nouveau_bo_new(struct nouveau_device * dev,uint32_t flags,uint32_t align,uint64_t size,union nouveau_bo_config * config,struct nouveau_bo ** pbo)622 nouveau_bo_new(struct nouveau_device *dev, uint32_t flags, uint32_t align,
623 uint64_t size, union nouveau_bo_config *config,
624 struct nouveau_bo **pbo)
625 {
626 struct nouveau_bo_priv *nvbo = calloc(1, sizeof(*nvbo));
627 struct nouveau_bo *bo = &nvbo->base;
628 int ret;
629
630 if (!nvbo)
631 return -ENOMEM;
632 atomic_set(&nvbo->refcnt, 1);
633 bo->device = dev;
634 bo->flags = flags;
635 bo->size = size;
636
637 ret = abi16_bo_init(bo, align, config);
638 if (ret) {
639 free(nvbo);
640 return ret;
641 }
642
643 *pbo = bo;
644 return 0;
645 }
646
647 static int
nouveau_bo_wrap_locked(struct nouveau_device * dev,uint32_t handle,struct nouveau_bo ** pbo,int name)648 nouveau_bo_wrap_locked(struct nouveau_device *dev, uint32_t handle,
649 struct nouveau_bo **pbo, int name)
650 {
651 struct nouveau_drm *drm = nouveau_drm(&dev->object);
652 struct nouveau_device_priv *nvdev = nouveau_device(dev);
653 struct drm_nouveau_gem_info req = { .handle = handle };
654 struct nouveau_bo_priv *nvbo;
655 int ret;
656
657 DRMLISTFOREACHENTRY(nvbo, &nvdev->bo_list, head) {
658 if (nvbo->base.handle == handle) {
659 if (atomic_inc_return(&nvbo->refcnt) == 1) {
660 /*
661 * Uh oh, this bo is dead and someone else
662 * will free it, but because refcnt is
663 * now non-zero fortunately they won't
664 * call the ioctl to close the bo.
665 *
666 * Remove this bo from the list so other
667 * calls to nouveau_bo_wrap_locked will
668 * see our replacement nvbo.
669 */
670 DRMLISTDEL(&nvbo->head);
671 if (!name)
672 name = nvbo->name;
673 break;
674 }
675
676 *pbo = &nvbo->base;
677 return 0;
678 }
679 }
680
681 ret = drmCommandWriteRead(drm->fd, DRM_NOUVEAU_GEM_INFO,
682 &req, sizeof(req));
683 if (ret)
684 return ret;
685
686 nvbo = calloc(1, sizeof(*nvbo));
687 if (nvbo) {
688 atomic_set(&nvbo->refcnt, 1);
689 nvbo->base.device = dev;
690 abi16_bo_info(&nvbo->base, &req);
691 nvbo->name = name;
692 DRMLISTADD(&nvbo->head, &nvdev->bo_list);
693 *pbo = &nvbo->base;
694 return 0;
695 }
696
697 return -ENOMEM;
698 }
699
700 static void
nouveau_bo_make_global(struct nouveau_bo_priv * nvbo)701 nouveau_bo_make_global(struct nouveau_bo_priv *nvbo)
702 {
703 if (!nvbo->head.next) {
704 struct nouveau_device_priv *nvdev = nouveau_device(nvbo->base.device);
705 pthread_mutex_lock(&nvdev->lock);
706 if (!nvbo->head.next)
707 DRMLISTADD(&nvbo->head, &nvdev->bo_list);
708 pthread_mutex_unlock(&nvdev->lock);
709 }
710 }
711
712 int
nouveau_bo_wrap(struct nouveau_device * dev,uint32_t handle,struct nouveau_bo ** pbo)713 nouveau_bo_wrap(struct nouveau_device *dev, uint32_t handle,
714 struct nouveau_bo **pbo)
715 {
716 struct nouveau_device_priv *nvdev = nouveau_device(dev);
717 int ret;
718 pthread_mutex_lock(&nvdev->lock);
719 ret = nouveau_bo_wrap_locked(dev, handle, pbo, 0);
720 pthread_mutex_unlock(&nvdev->lock);
721 return ret;
722 }
723
724 int
nouveau_bo_name_ref(struct nouveau_device * dev,uint32_t name,struct nouveau_bo ** pbo)725 nouveau_bo_name_ref(struct nouveau_device *dev, uint32_t name,
726 struct nouveau_bo **pbo)
727 {
728 struct nouveau_drm *drm = nouveau_drm(&dev->object);
729 struct nouveau_device_priv *nvdev = nouveau_device(dev);
730 struct nouveau_bo_priv *nvbo;
731 struct drm_gem_open req = { .name = name };
732 int ret;
733
734 pthread_mutex_lock(&nvdev->lock);
735 DRMLISTFOREACHENTRY(nvbo, &nvdev->bo_list, head) {
736 if (nvbo->name == name) {
737 ret = nouveau_bo_wrap_locked(dev, nvbo->base.handle,
738 pbo, name);
739 pthread_mutex_unlock(&nvdev->lock);
740 return ret;
741 }
742 }
743
744 ret = drmIoctl(drm->fd, DRM_IOCTL_GEM_OPEN, &req);
745 if (ret == 0) {
746 ret = nouveau_bo_wrap_locked(dev, req.handle, pbo, name);
747 }
748
749 pthread_mutex_unlock(&nvdev->lock);
750 return ret;
751 }
752
753 int
nouveau_bo_name_get(struct nouveau_bo * bo,uint32_t * name)754 nouveau_bo_name_get(struct nouveau_bo *bo, uint32_t *name)
755 {
756 struct drm_gem_flink req = { .handle = bo->handle };
757 struct nouveau_drm *drm = nouveau_drm(&bo->device->object);
758 struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
759
760 *name = nvbo->name;
761 if (!*name) {
762 int ret = drmIoctl(drm->fd, DRM_IOCTL_GEM_FLINK, &req);
763
764 if (ret) {
765 *name = 0;
766 return ret;
767 }
768 nvbo->name = *name = req.name;
769
770 nouveau_bo_make_global(nvbo);
771 }
772 return 0;
773 }
774
775 void
nouveau_bo_ref(struct nouveau_bo * bo,struct nouveau_bo ** pref)776 nouveau_bo_ref(struct nouveau_bo *bo, struct nouveau_bo **pref)
777 {
778 struct nouveau_bo *ref = *pref;
779 if (bo) {
780 atomic_inc(&nouveau_bo(bo)->refcnt);
781 }
782 if (ref) {
783 if (atomic_dec_and_test(&nouveau_bo(ref)->refcnt))
784 nouveau_bo_del(ref);
785 }
786 *pref = bo;
787 }
788
789 int
nouveau_bo_prime_handle_ref(struct nouveau_device * dev,int prime_fd,struct nouveau_bo ** bo)790 nouveau_bo_prime_handle_ref(struct nouveau_device *dev, int prime_fd,
791 struct nouveau_bo **bo)
792 {
793 struct nouveau_drm *drm = nouveau_drm(&dev->object);
794 struct nouveau_device_priv *nvdev = nouveau_device(dev);
795 int ret;
796 unsigned int handle;
797
798 nouveau_bo_ref(NULL, bo);
799
800 pthread_mutex_lock(&nvdev->lock);
801 ret = drmPrimeFDToHandle(drm->fd, prime_fd, &handle);
802 if (ret == 0) {
803 ret = nouveau_bo_wrap_locked(dev, handle, bo, 0);
804 }
805 pthread_mutex_unlock(&nvdev->lock);
806 return ret;
807 }
808
809 int
nouveau_bo_set_prime(struct nouveau_bo * bo,int * prime_fd)810 nouveau_bo_set_prime(struct nouveau_bo *bo, int *prime_fd)
811 {
812 struct nouveau_drm *drm = nouveau_drm(&bo->device->object);
813 struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
814 int ret;
815
816 ret = drmPrimeHandleToFD(drm->fd, nvbo->base.handle, DRM_CLOEXEC, prime_fd);
817 if (ret)
818 return ret;
819
820 nouveau_bo_make_global(nvbo);
821 return 0;
822 }
823
824 int
nouveau_bo_wait(struct nouveau_bo * bo,uint32_t access,struct nouveau_client * client)825 nouveau_bo_wait(struct nouveau_bo *bo, uint32_t access,
826 struct nouveau_client *client)
827 {
828 struct nouveau_drm *drm = nouveau_drm(&bo->device->object);
829 struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
830 struct drm_nouveau_gem_cpu_prep req;
831 struct nouveau_pushbuf *push;
832 int ret = 0;
833
834 if (!(access & NOUVEAU_BO_RDWR))
835 return 0;
836
837 push = cli_push_get(client, bo);
838 if (push && push->channel)
839 nouveau_pushbuf_kick(push, push->channel);
840
841 if (!nvbo->head.next && !(nvbo->access & NOUVEAU_BO_WR) &&
842 !(access & NOUVEAU_BO_WR))
843 return 0;
844
845 req.handle = bo->handle;
846 req.flags = 0;
847 if (access & NOUVEAU_BO_WR)
848 req.flags |= NOUVEAU_GEM_CPU_PREP_WRITE;
849 if (access & NOUVEAU_BO_NOBLOCK)
850 req.flags |= NOUVEAU_GEM_CPU_PREP_NOWAIT;
851
852 ret = drmCommandWrite(drm->fd, DRM_NOUVEAU_GEM_CPU_PREP,
853 &req, sizeof(req));
854 if (ret == 0)
855 nvbo->access = 0;
856 return ret;
857 }
858
859 int
nouveau_bo_map(struct nouveau_bo * bo,uint32_t access,struct nouveau_client * client)860 nouveau_bo_map(struct nouveau_bo *bo, uint32_t access,
861 struct nouveau_client *client)
862 {
863 struct nouveau_drm *drm = nouveau_drm(&bo->device->object);
864 struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
865 if (bo->map == NULL) {
866 bo->map = drm_mmap(0, bo->size, PROT_READ | PROT_WRITE,
867 MAP_SHARED, drm->fd, nvbo->map_handle);
868 if (bo->map == MAP_FAILED) {
869 bo->map = NULL;
870 return -errno;
871 }
872 }
873 return nouveau_bo_wait(bo, access, client);
874 }
875