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1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/**************************************************************************
3 *
4 * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include <drm/ttm/ttm_placement.h>
29
30#include "vmwgfx_drv.h"
31#include "vmwgfx_resource_priv.h"
32#include "vmwgfx_binding.h"
33
34struct vmw_user_context {
35 struct ttm_base_object base;
36 struct vmw_resource res;
37 struct vmw_ctx_binding_state *cbs;
38 struct vmw_cmdbuf_res_manager *man;
39 struct vmw_resource *cotables[SVGA_COTABLE_DX10_MAX];
40 spinlock_t cotable_lock;
41 struct vmw_buffer_object *dx_query_mob;
42};
43
44static void vmw_user_context_free(struct vmw_resource *res);
45static struct vmw_resource *
46vmw_user_context_base_to_res(struct ttm_base_object *base);
47
48static int vmw_gb_context_create(struct vmw_resource *res);
49static int vmw_gb_context_bind(struct vmw_resource *res,
50 struct ttm_validate_buffer *val_buf);
51static int vmw_gb_context_unbind(struct vmw_resource *res,
52 bool readback,
53 struct ttm_validate_buffer *val_buf);
54static int vmw_gb_context_destroy(struct vmw_resource *res);
55static int vmw_dx_context_create(struct vmw_resource *res);
56static int vmw_dx_context_bind(struct vmw_resource *res,
57 struct ttm_validate_buffer *val_buf);
58static int vmw_dx_context_unbind(struct vmw_resource *res,
59 bool readback,
60 struct ttm_validate_buffer *val_buf);
61static int vmw_dx_context_destroy(struct vmw_resource *res);
62
63static uint64_t vmw_user_context_size;
64
65static const struct vmw_user_resource_conv user_context_conv = {
66 .object_type = VMW_RES_CONTEXT,
67 .base_obj_to_res = vmw_user_context_base_to_res,
68 .res_free = vmw_user_context_free
69};
70
71const struct vmw_user_resource_conv *user_context_converter =
72 &user_context_conv;
73
74
75static const struct vmw_res_func vmw_legacy_context_func = {
76 .res_type = vmw_res_context,
77 .needs_backup = false,
78 .may_evict = false,
79 .type_name = "legacy contexts",
80 .backup_placement = NULL,
81 .create = NULL,
82 .destroy = NULL,
83 .bind = NULL,
84 .unbind = NULL
85};
86
87static const struct vmw_res_func vmw_gb_context_func = {
88 .res_type = vmw_res_context,
89 .needs_backup = true,
90 .may_evict = true,
91 .prio = 3,
92 .dirty_prio = 3,
93 .type_name = "guest backed contexts",
94 .backup_placement = &vmw_mob_placement,
95 .create = vmw_gb_context_create,
96 .destroy = vmw_gb_context_destroy,
97 .bind = vmw_gb_context_bind,
98 .unbind = vmw_gb_context_unbind
99};
100
101static const struct vmw_res_func vmw_dx_context_func = {
102 .res_type = vmw_res_dx_context,
103 .needs_backup = true,
104 .may_evict = true,
105 .prio = 3,
106 .dirty_prio = 3,
107 .type_name = "dx contexts",
108 .backup_placement = &vmw_mob_placement,
109 .create = vmw_dx_context_create,
110 .destroy = vmw_dx_context_destroy,
111 .bind = vmw_dx_context_bind,
112 .unbind = vmw_dx_context_unbind
113};
114
115/**
116 * Context management:
117 */
118
119static void vmw_context_cotables_unref(struct vmw_user_context *uctx)
120{
121 struct vmw_resource *res;
122 int i;
123
124 for (i = 0; i < SVGA_COTABLE_DX10_MAX; ++i) {
125 spin_lock(&uctx->cotable_lock);
126 res = uctx->cotables[i];
127 uctx->cotables[i] = NULL;
128 spin_unlock(&uctx->cotable_lock);
129
130 if (res)
131 vmw_resource_unreference(&res);
132 }
133}
134
135static void vmw_hw_context_destroy(struct vmw_resource *res)
136{
137 struct vmw_user_context *uctx =
138 container_of(res, struct vmw_user_context, res);
139 struct vmw_private *dev_priv = res->dev_priv;
140 struct {
141 SVGA3dCmdHeader header;
142 SVGA3dCmdDestroyContext body;
143 } *cmd;
144
145
146 if (res->func->destroy == vmw_gb_context_destroy ||
147 res->func->destroy == vmw_dx_context_destroy) {
148 mutex_lock(&dev_priv->cmdbuf_mutex);
149 vmw_cmdbuf_res_man_destroy(uctx->man);
150 mutex_lock(&dev_priv->binding_mutex);
151 vmw_binding_state_kill(uctx->cbs);
152 (void) res->func->destroy(res);
153 mutex_unlock(&dev_priv->binding_mutex);
154 if (dev_priv->pinned_bo != NULL &&
155 !dev_priv->query_cid_valid)
156 __vmw_execbuf_release_pinned_bo(dev_priv, NULL);
157 mutex_unlock(&dev_priv->cmdbuf_mutex);
158 vmw_context_cotables_unref(uctx);
159 return;
160 }
161
162 vmw_execbuf_release_pinned_bo(dev_priv);
163 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
164 if (unlikely(cmd == NULL))
165 return;
166
167 cmd->header.id = SVGA_3D_CMD_CONTEXT_DESTROY;
168 cmd->header.size = sizeof(cmd->body);
169 cmd->body.cid = res->id;
170
171 vmw_fifo_commit(dev_priv, sizeof(*cmd));
172 vmw_fifo_resource_dec(dev_priv);
173}
174
175static int vmw_gb_context_init(struct vmw_private *dev_priv,
176 bool dx,
177 struct vmw_resource *res,
178 void (*res_free)(struct vmw_resource *res))
179{
180 int ret, i;
181 struct vmw_user_context *uctx =
182 container_of(res, struct vmw_user_context, res);
183
184 res->backup_size = (dx ? sizeof(SVGADXContextMobFormat) :
185 SVGA3D_CONTEXT_DATA_SIZE);
186 ret = vmw_resource_init(dev_priv, res, true,
187 res_free,
188 dx ? &vmw_dx_context_func :
189 &vmw_gb_context_func);
190 if (unlikely(ret != 0))
191 goto out_err;
192
193 if (dev_priv->has_mob) {
194 uctx->man = vmw_cmdbuf_res_man_create(dev_priv);
195 if (IS_ERR(uctx->man)) {
196 ret = PTR_ERR(uctx->man);
197 uctx->man = NULL;
198 goto out_err;
199 }
200 }
201
202 uctx->cbs = vmw_binding_state_alloc(dev_priv);
203 if (IS_ERR(uctx->cbs)) {
204 ret = PTR_ERR(uctx->cbs);
205 goto out_err;
206 }
207
208 spin_lock_init(&uctx->cotable_lock);
209
210 if (dx) {
211 for (i = 0; i < SVGA_COTABLE_DX10_MAX; ++i) {
212 uctx->cotables[i] = vmw_cotable_alloc(dev_priv,
213 &uctx->res, i);
214 if (IS_ERR(uctx->cotables[i])) {
215 ret = PTR_ERR(uctx->cotables[i]);
216 goto out_cotables;
217 }
218 }
219 }
220
221 res->hw_destroy = vmw_hw_context_destroy;
222 return 0;
223
224out_cotables:
225 vmw_context_cotables_unref(uctx);
226out_err:
227 if (res_free)
228 res_free(res);
229 else
230 kfree(res);
231 return ret;
232}
233
234static int vmw_context_init(struct vmw_private *dev_priv,
235 struct vmw_resource *res,
236 void (*res_free)(struct vmw_resource *res),
237 bool dx)
238{
239 int ret;
240
241 struct {
242 SVGA3dCmdHeader header;
243 SVGA3dCmdDefineContext body;
244 } *cmd;
245
246 if (dev_priv->has_mob)
247 return vmw_gb_context_init(dev_priv, dx, res, res_free);
248
249 ret = vmw_resource_init(dev_priv, res, false,
250 res_free, &vmw_legacy_context_func);
251
252 if (unlikely(ret != 0)) {
253 DRM_ERROR("Failed to allocate a resource id.\n");
254 goto out_early;
255 }
256
257 if (unlikely(res->id >= SVGA3D_MAX_CONTEXT_IDS)) {
258 DRM_ERROR("Out of hw context ids.\n");
259 vmw_resource_unreference(&res);
260 return -ENOMEM;
261 }
262
263 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
264 if (unlikely(cmd == NULL)) {
265 vmw_resource_unreference(&res);
266 return -ENOMEM;
267 }
268
269 cmd->header.id = SVGA_3D_CMD_CONTEXT_DEFINE;
270 cmd->header.size = sizeof(cmd->body);
271 cmd->body.cid = res->id;
272
273 vmw_fifo_commit(dev_priv, sizeof(*cmd));
274 vmw_fifo_resource_inc(dev_priv);
275 res->hw_destroy = vmw_hw_context_destroy;
276 return 0;
277
278out_early:
279 if (res_free == NULL)
280 kfree(res);
281 else
282 res_free(res);
283 return ret;
284}
285
286
287/*
288 * GB context.
289 */
290
291static int vmw_gb_context_create(struct vmw_resource *res)
292{
293 struct vmw_private *dev_priv = res->dev_priv;
294 int ret;
295 struct {
296 SVGA3dCmdHeader header;
297 SVGA3dCmdDefineGBContext body;
298 } *cmd;
299
300 if (likely(res->id != -1))
301 return 0;
302
303 ret = vmw_resource_alloc_id(res);
304 if (unlikely(ret != 0)) {
305 DRM_ERROR("Failed to allocate a context id.\n");
306 goto out_no_id;
307 }
308
309 if (unlikely(res->id >= VMWGFX_NUM_GB_CONTEXT)) {
310 ret = -EBUSY;
311 goto out_no_fifo;
312 }
313
314 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
315 if (unlikely(cmd == NULL)) {
316 ret = -ENOMEM;
317 goto out_no_fifo;
318 }
319
320 cmd->header.id = SVGA_3D_CMD_DEFINE_GB_CONTEXT;
321 cmd->header.size = sizeof(cmd->body);
322 cmd->body.cid = res->id;
323 vmw_fifo_commit(dev_priv, sizeof(*cmd));
324 vmw_fifo_resource_inc(dev_priv);
325
326 return 0;
327
328out_no_fifo:
329 vmw_resource_release_id(res);
330out_no_id:
331 return ret;
332}
333
334static int vmw_gb_context_bind(struct vmw_resource *res,
335 struct ttm_validate_buffer *val_buf)
336{
337 struct vmw_private *dev_priv = res->dev_priv;
338 struct {
339 SVGA3dCmdHeader header;
340 SVGA3dCmdBindGBContext body;
341 } *cmd;
342 struct ttm_buffer_object *bo = val_buf->bo;
343
344 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
345
346 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
347 if (unlikely(cmd == NULL))
348 return -ENOMEM;
349
350 cmd->header.id = SVGA_3D_CMD_BIND_GB_CONTEXT;
351 cmd->header.size = sizeof(cmd->body);
352 cmd->body.cid = res->id;
353 cmd->body.mobid = bo->mem.start;
354 cmd->body.validContents = res->backup_dirty;
355 res->backup_dirty = false;
356 vmw_fifo_commit(dev_priv, sizeof(*cmd));
357
358 return 0;
359}
360
361static int vmw_gb_context_unbind(struct vmw_resource *res,
362 bool readback,
363 struct ttm_validate_buffer *val_buf)
364{
365 struct vmw_private *dev_priv = res->dev_priv;
366 struct ttm_buffer_object *bo = val_buf->bo;
367 struct vmw_fence_obj *fence;
368 struct vmw_user_context *uctx =
369 container_of(res, struct vmw_user_context, res);
370
371 struct {
372 SVGA3dCmdHeader header;
373 SVGA3dCmdReadbackGBContext body;
374 } *cmd1;
375 struct {
376 SVGA3dCmdHeader header;
377 SVGA3dCmdBindGBContext body;
378 } *cmd2;
379 uint32_t submit_size;
380 uint8_t *cmd;
381
382
383 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
384
385 mutex_lock(&dev_priv->binding_mutex);
386 vmw_binding_state_scrub(uctx->cbs);
387
388 submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0);
389
390 cmd = VMW_FIFO_RESERVE(dev_priv, submit_size);
391 if (unlikely(cmd == NULL)) {
392 mutex_unlock(&dev_priv->binding_mutex);
393 return -ENOMEM;
394 }
395
396 cmd2 = (void *) cmd;
397 if (readback) {
398 cmd1 = (void *) cmd;
399 cmd1->header.id = SVGA_3D_CMD_READBACK_GB_CONTEXT;
400 cmd1->header.size = sizeof(cmd1->body);
401 cmd1->body.cid = res->id;
402 cmd2 = (void *) (&cmd1[1]);
403 }
404 cmd2->header.id = SVGA_3D_CMD_BIND_GB_CONTEXT;
405 cmd2->header.size = sizeof(cmd2->body);
406 cmd2->body.cid = res->id;
407 cmd2->body.mobid = SVGA3D_INVALID_ID;
408
409 vmw_fifo_commit(dev_priv, submit_size);
410 mutex_unlock(&dev_priv->binding_mutex);
411
412 /*
413 * Create a fence object and fence the backup buffer.
414 */
415
416 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
417 &fence, NULL);
418
419 vmw_bo_fence_single(bo, fence);
420
421 if (likely(fence != NULL))
422 vmw_fence_obj_unreference(&fence);
423
424 return 0;
425}
426
427static int vmw_gb_context_destroy(struct vmw_resource *res)
428{
429 struct vmw_private *dev_priv = res->dev_priv;
430 struct {
431 SVGA3dCmdHeader header;
432 SVGA3dCmdDestroyGBContext body;
433 } *cmd;
434
435 if (likely(res->id == -1))
436 return 0;
437
438 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
439 if (unlikely(cmd == NULL))
440 return -ENOMEM;
441
442 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_CONTEXT;
443 cmd->header.size = sizeof(cmd->body);
444 cmd->body.cid = res->id;
445 vmw_fifo_commit(dev_priv, sizeof(*cmd));
446 if (dev_priv->query_cid == res->id)
447 dev_priv->query_cid_valid = false;
448 vmw_resource_release_id(res);
449 vmw_fifo_resource_dec(dev_priv);
450
451 return 0;
452}
453
454/*
455 * DX context.
456 */
457
458static int vmw_dx_context_create(struct vmw_resource *res)
459{
460 struct vmw_private *dev_priv = res->dev_priv;
461 int ret;
462 struct {
463 SVGA3dCmdHeader header;
464 SVGA3dCmdDXDefineContext body;
465 } *cmd;
466
467 if (likely(res->id != -1))
468 return 0;
469
470 ret = vmw_resource_alloc_id(res);
471 if (unlikely(ret != 0)) {
472 DRM_ERROR("Failed to allocate a context id.\n");
473 goto out_no_id;
474 }
475
476 if (unlikely(res->id >= VMWGFX_NUM_DXCONTEXT)) {
477 ret = -EBUSY;
478 goto out_no_fifo;
479 }
480
481 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
482 if (unlikely(cmd == NULL)) {
483 ret = -ENOMEM;
484 goto out_no_fifo;
485 }
486
487 cmd->header.id = SVGA_3D_CMD_DX_DEFINE_CONTEXT;
488 cmd->header.size = sizeof(cmd->body);
489 cmd->body.cid = res->id;
490 vmw_fifo_commit(dev_priv, sizeof(*cmd));
491 vmw_fifo_resource_inc(dev_priv);
492
493 return 0;
494
495out_no_fifo:
496 vmw_resource_release_id(res);
497out_no_id:
498 return ret;
499}
500
501static int vmw_dx_context_bind(struct vmw_resource *res,
502 struct ttm_validate_buffer *val_buf)
503{
504 struct vmw_private *dev_priv = res->dev_priv;
505 struct {
506 SVGA3dCmdHeader header;
507 SVGA3dCmdDXBindContext body;
508 } *cmd;
509 struct ttm_buffer_object *bo = val_buf->bo;
510
511 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
512
513 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
514 if (unlikely(cmd == NULL))
515 return -ENOMEM;
516
517 cmd->header.id = SVGA_3D_CMD_DX_BIND_CONTEXT;
518 cmd->header.size = sizeof(cmd->body);
519 cmd->body.cid = res->id;
520 cmd->body.mobid = bo->mem.start;
521 cmd->body.validContents = res->backup_dirty;
522 res->backup_dirty = false;
523 vmw_fifo_commit(dev_priv, sizeof(*cmd));
524
525
526 return 0;
527}
528
529/**
530 * vmw_dx_context_scrub_cotables - Scrub all bindings and
531 * cotables from a context
532 *
533 * @ctx: Pointer to the context resource
534 * @readback: Whether to save the otable contents on scrubbing.
535 *
536 * COtables must be unbound before their context, but unbinding requires
537 * the backup buffer being reserved, whereas scrubbing does not.
538 * This function scrubs all cotables of a context, potentially reading back
539 * the contents into their backup buffers. However, scrubbing cotables
540 * also makes the device context invalid, so scrub all bindings first so
541 * that doesn't have to be done later with an invalid context.
542 */
543void vmw_dx_context_scrub_cotables(struct vmw_resource *ctx,
544 bool readback)
545{
546 struct vmw_user_context *uctx =
547 container_of(ctx, struct vmw_user_context, res);
548 int i;
549
550 vmw_binding_state_scrub(uctx->cbs);
551 for (i = 0; i < SVGA_COTABLE_DX10_MAX; ++i) {
552 struct vmw_resource *res;
553
554 /* Avoid racing with ongoing cotable destruction. */
555 spin_lock(&uctx->cotable_lock);
556 res = uctx->cotables[vmw_cotable_scrub_order[i]];
557 if (res)
558 res = vmw_resource_reference_unless_doomed(res);
559 spin_unlock(&uctx->cotable_lock);
560 if (!res)
561 continue;
562
563 WARN_ON(vmw_cotable_scrub(res, readback));
564 vmw_resource_unreference(&res);
565 }
566}
567
568static int vmw_dx_context_unbind(struct vmw_resource *res,
569 bool readback,
570 struct ttm_validate_buffer *val_buf)
571{
572 struct vmw_private *dev_priv = res->dev_priv;
573 struct ttm_buffer_object *bo = val_buf->bo;
574 struct vmw_fence_obj *fence;
575 struct vmw_user_context *uctx =
576 container_of(res, struct vmw_user_context, res);
577
578 struct {
579 SVGA3dCmdHeader header;
580 SVGA3dCmdDXReadbackContext body;
581 } *cmd1;
582 struct {
583 SVGA3dCmdHeader header;
584 SVGA3dCmdDXBindContext body;
585 } *cmd2;
586 uint32_t submit_size;
587 uint8_t *cmd;
588
589
590 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
591
592 mutex_lock(&dev_priv->binding_mutex);
593 vmw_dx_context_scrub_cotables(res, readback);
594
595 if (uctx->dx_query_mob && uctx->dx_query_mob->dx_query_ctx &&
596 readback) {
597 WARN_ON(uctx->dx_query_mob->dx_query_ctx != res);
598 if (vmw_query_readback_all(uctx->dx_query_mob))
599 DRM_ERROR("Failed to read back query states\n");
600 }
601
602 submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0);
603
604 cmd = VMW_FIFO_RESERVE(dev_priv, submit_size);
605 if (unlikely(cmd == NULL)) {
606 mutex_unlock(&dev_priv->binding_mutex);
607 return -ENOMEM;
608 }
609
610 cmd2 = (void *) cmd;
611 if (readback) {
612 cmd1 = (void *) cmd;
613 cmd1->header.id = SVGA_3D_CMD_DX_READBACK_CONTEXT;
614 cmd1->header.size = sizeof(cmd1->body);
615 cmd1->body.cid = res->id;
616 cmd2 = (void *) (&cmd1[1]);
617 }
618 cmd2->header.id = SVGA_3D_CMD_DX_BIND_CONTEXT;
619 cmd2->header.size = sizeof(cmd2->body);
620 cmd2->body.cid = res->id;
621 cmd2->body.mobid = SVGA3D_INVALID_ID;
622
623 vmw_fifo_commit(dev_priv, submit_size);
624 mutex_unlock(&dev_priv->binding_mutex);
625
626 /*
627 * Create a fence object and fence the backup buffer.
628 */
629
630 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
631 &fence, NULL);
632
633 vmw_bo_fence_single(bo, fence);
634
635 if (likely(fence != NULL))
636 vmw_fence_obj_unreference(&fence);
637
638 return 0;
639}
640
641static int vmw_dx_context_destroy(struct vmw_resource *res)
642{
643 struct vmw_private *dev_priv = res->dev_priv;
644 struct {
645 SVGA3dCmdHeader header;
646 SVGA3dCmdDXDestroyContext body;
647 } *cmd;
648
649 if (likely(res->id == -1))
650 return 0;
651
652 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
653 if (unlikely(cmd == NULL))
654 return -ENOMEM;
655
656 cmd->header.id = SVGA_3D_CMD_DX_DESTROY_CONTEXT;
657 cmd->header.size = sizeof(cmd->body);
658 cmd->body.cid = res->id;
659 vmw_fifo_commit(dev_priv, sizeof(*cmd));
660 if (dev_priv->query_cid == res->id)
661 dev_priv->query_cid_valid = false;
662 vmw_resource_release_id(res);
663 vmw_fifo_resource_dec(dev_priv);
664
665 return 0;
666}
667
668/**
669 * User-space context management:
670 */
671
672static struct vmw_resource *
673vmw_user_context_base_to_res(struct ttm_base_object *base)
674{
675 return &(container_of(base, struct vmw_user_context, base)->res);
676}
677
678static void vmw_user_context_free(struct vmw_resource *res)
679{
680 struct vmw_user_context *ctx =
681 container_of(res, struct vmw_user_context, res);
682 struct vmw_private *dev_priv = res->dev_priv;
683
684 if (ctx->cbs)
685 vmw_binding_state_free(ctx->cbs);
686
687 (void) vmw_context_bind_dx_query(res, NULL);
688
689 ttm_base_object_kfree(ctx, base);
690 ttm_mem_global_free(vmw_mem_glob(dev_priv),
691 vmw_user_context_size);
692}
693
694/**
695 * This function is called when user space has no more references on the
696 * base object. It releases the base-object's reference on the resource object.
697 */
698
699static void vmw_user_context_base_release(struct ttm_base_object **p_base)
700{
701 struct ttm_base_object *base = *p_base;
702 struct vmw_user_context *ctx =
703 container_of(base, struct vmw_user_context, base);
704 struct vmw_resource *res = &ctx->res;
705
706 *p_base = NULL;
707 vmw_resource_unreference(&res);
708}
709
710int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
711 struct drm_file *file_priv)
712{
713 struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
714 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
715
716 return ttm_ref_object_base_unref(tfile, arg->cid, TTM_REF_USAGE);
717}
718
719static int vmw_context_define(struct drm_device *dev, void *data,
720 struct drm_file *file_priv, bool dx)
721{
722 struct vmw_private *dev_priv = vmw_priv(dev);
723 struct vmw_user_context *ctx;
724 struct vmw_resource *res;
725 struct vmw_resource *tmp;
726 struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
727 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
728 struct ttm_operation_ctx ttm_opt_ctx = {
729 .interruptible = true,
730 .no_wait_gpu = false
731 };
732 int ret;
733
734 if (!dev_priv->has_dx && dx) {
735 VMW_DEBUG_USER("DX contexts not supported by device.\n");
736 return -EINVAL;
737 }
738
739 if (unlikely(vmw_user_context_size == 0))
740 vmw_user_context_size = ttm_round_pot(sizeof(*ctx)) +
741 ((dev_priv->has_mob) ? vmw_cmdbuf_res_man_size() : 0) +
742 + VMW_IDA_ACC_SIZE + TTM_OBJ_EXTRA_SIZE;
743
744 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
745 if (unlikely(ret != 0))
746 return ret;
747
748 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
749 vmw_user_context_size,
750 &ttm_opt_ctx);
751 if (unlikely(ret != 0)) {
752 if (ret != -ERESTARTSYS)
753 DRM_ERROR("Out of graphics memory for context"
754 " creation.\n");
755 goto out_unlock;
756 }
757
758 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
759 if (unlikely(!ctx)) {
760 ttm_mem_global_free(vmw_mem_glob(dev_priv),
761 vmw_user_context_size);
762 ret = -ENOMEM;
763 goto out_unlock;
764 }
765
766 res = &ctx->res;
767 ctx->base.shareable = false;
768 ctx->base.tfile = NULL;
769
770 /*
771 * From here on, the destructor takes over resource freeing.
772 */
773
774 ret = vmw_context_init(dev_priv, res, vmw_user_context_free, dx);
775 if (unlikely(ret != 0))
776 goto out_unlock;
777
778 tmp = vmw_resource_reference(&ctx->res);
779 ret = ttm_base_object_init(tfile, &ctx->base, false, VMW_RES_CONTEXT,
780 &vmw_user_context_base_release, NULL);
781
782 if (unlikely(ret != 0)) {
783 vmw_resource_unreference(&tmp);
784 goto out_err;
785 }
786
787 arg->cid = ctx->base.handle;
788out_err:
789 vmw_resource_unreference(&res);
790out_unlock:
791 ttm_read_unlock(&dev_priv->reservation_sem);
792 return ret;
793}
794
795int vmw_context_define_ioctl(struct drm_device *dev, void *data,
796 struct drm_file *file_priv)
797{
798 return vmw_context_define(dev, data, file_priv, false);
799}
800
801int vmw_extended_context_define_ioctl(struct drm_device *dev, void *data,
802 struct drm_file *file_priv)
803{
804 union drm_vmw_extended_context_arg *arg = (typeof(arg)) data;
805 struct drm_vmw_context_arg *rep = &arg->rep;
806
807 switch (arg->req) {
808 case drm_vmw_context_legacy:
809 return vmw_context_define(dev, rep, file_priv, false);
810 case drm_vmw_context_dx:
811 return vmw_context_define(dev, rep, file_priv, true);
812 default:
813 break;
814 }
815 return -EINVAL;
816}
817
818/**
819 * vmw_context_binding_list - Return a list of context bindings
820 *
821 * @ctx: The context resource
822 *
823 * Returns the current list of bindings of the given context. Note that
824 * this list becomes stale as soon as the dev_priv::binding_mutex is unlocked.
825 */
826struct list_head *vmw_context_binding_list(struct vmw_resource *ctx)
827{
828 struct vmw_user_context *uctx =
829 container_of(ctx, struct vmw_user_context, res);
830
831 return vmw_binding_state_list(uctx->cbs);
832}
833
834struct vmw_cmdbuf_res_manager *vmw_context_res_man(struct vmw_resource *ctx)
835{
836 return container_of(ctx, struct vmw_user_context, res)->man;
837}
838
839struct vmw_resource *vmw_context_cotable(struct vmw_resource *ctx,
840 SVGACOTableType cotable_type)
841{
842 if (cotable_type >= SVGA_COTABLE_DX10_MAX)
843 return ERR_PTR(-EINVAL);
844
845 return container_of(ctx, struct vmw_user_context, res)->
846 cotables[cotable_type];
847}
848
849/**
850 * vmw_context_binding_state -
851 * Return a pointer to a context binding state structure
852 *
853 * @ctx: The context resource
854 *
855 * Returns the current state of bindings of the given context. Note that
856 * this state becomes stale as soon as the dev_priv::binding_mutex is unlocked.
857 */
858struct vmw_ctx_binding_state *
859vmw_context_binding_state(struct vmw_resource *ctx)
860{
861 return container_of(ctx, struct vmw_user_context, res)->cbs;
862}
863
864/**
865 * vmw_context_bind_dx_query -
866 * Sets query MOB for the context. If @mob is NULL, then this function will
867 * remove the association between the MOB and the context. This function
868 * assumes the binding_mutex is held.
869 *
870 * @ctx_res: The context resource
871 * @mob: a reference to the query MOB
872 *
873 * Returns -EINVAL if a MOB has already been set and does not match the one
874 * specified in the parameter. 0 otherwise.
875 */
876int vmw_context_bind_dx_query(struct vmw_resource *ctx_res,
877 struct vmw_buffer_object *mob)
878{
879 struct vmw_user_context *uctx =
880 container_of(ctx_res, struct vmw_user_context, res);
881
882 if (mob == NULL) {
883 if (uctx->dx_query_mob) {
884 uctx->dx_query_mob->dx_query_ctx = NULL;
885 vmw_bo_unreference(&uctx->dx_query_mob);
886 uctx->dx_query_mob = NULL;
887 }
888
889 return 0;
890 }
891
892 /* Can only have one MOB per context for queries */
893 if (uctx->dx_query_mob && uctx->dx_query_mob != mob)
894 return -EINVAL;
895
896 mob->dx_query_ctx = ctx_res;
897
898 if (!uctx->dx_query_mob)
899 uctx->dx_query_mob = vmw_bo_reference(mob);
900
901 return 0;
902}
903
904/**
905 * vmw_context_get_dx_query_mob - Returns non-counted reference to DX query mob
906 *
907 * @ctx_res: The context resource
908 */
909struct vmw_buffer_object *
910vmw_context_get_dx_query_mob(struct vmw_resource *ctx_res)
911{
912 struct vmw_user_context *uctx =
913 container_of(ctx_res, struct vmw_user_context, res);
914
915 return uctx->dx_query_mob;
916}
1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/**************************************************************************
3 *
4 * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include <drm/ttm/ttm_placement.h>
29
30#include "vmwgfx_drv.h"
31#include "vmwgfx_resource_priv.h"
32#include "vmwgfx_binding.h"
33
34struct vmw_user_context {
35 struct ttm_base_object base;
36 struct vmw_resource res;
37 struct vmw_ctx_binding_state *cbs;
38 struct vmw_cmdbuf_res_manager *man;
39 struct vmw_resource *cotables[SVGA_COTABLE_MAX];
40 spinlock_t cotable_lock;
41 struct vmw_buffer_object *dx_query_mob;
42};
43
44static void vmw_user_context_free(struct vmw_resource *res);
45static struct vmw_resource *
46vmw_user_context_base_to_res(struct ttm_base_object *base);
47
48static int vmw_gb_context_create(struct vmw_resource *res);
49static int vmw_gb_context_bind(struct vmw_resource *res,
50 struct ttm_validate_buffer *val_buf);
51static int vmw_gb_context_unbind(struct vmw_resource *res,
52 bool readback,
53 struct ttm_validate_buffer *val_buf);
54static int vmw_gb_context_destroy(struct vmw_resource *res);
55static int vmw_dx_context_create(struct vmw_resource *res);
56static int vmw_dx_context_bind(struct vmw_resource *res,
57 struct ttm_validate_buffer *val_buf);
58static int vmw_dx_context_unbind(struct vmw_resource *res,
59 bool readback,
60 struct ttm_validate_buffer *val_buf);
61static int vmw_dx_context_destroy(struct vmw_resource *res);
62
63static uint64_t vmw_user_context_size;
64
65static const struct vmw_user_resource_conv user_context_conv = {
66 .object_type = VMW_RES_CONTEXT,
67 .base_obj_to_res = vmw_user_context_base_to_res,
68 .res_free = vmw_user_context_free
69};
70
71const struct vmw_user_resource_conv *user_context_converter =
72 &user_context_conv;
73
74
75static const struct vmw_res_func vmw_legacy_context_func = {
76 .res_type = vmw_res_context,
77 .needs_backup = false,
78 .may_evict = false,
79 .type_name = "legacy contexts",
80 .backup_placement = NULL,
81 .create = NULL,
82 .destroy = NULL,
83 .bind = NULL,
84 .unbind = NULL
85};
86
87static const struct vmw_res_func vmw_gb_context_func = {
88 .res_type = vmw_res_context,
89 .needs_backup = true,
90 .may_evict = true,
91 .prio = 3,
92 .dirty_prio = 3,
93 .type_name = "guest backed contexts",
94 .backup_placement = &vmw_mob_placement,
95 .create = vmw_gb_context_create,
96 .destroy = vmw_gb_context_destroy,
97 .bind = vmw_gb_context_bind,
98 .unbind = vmw_gb_context_unbind
99};
100
101static const struct vmw_res_func vmw_dx_context_func = {
102 .res_type = vmw_res_dx_context,
103 .needs_backup = true,
104 .may_evict = true,
105 .prio = 3,
106 .dirty_prio = 3,
107 .type_name = "dx contexts",
108 .backup_placement = &vmw_mob_placement,
109 .create = vmw_dx_context_create,
110 .destroy = vmw_dx_context_destroy,
111 .bind = vmw_dx_context_bind,
112 .unbind = vmw_dx_context_unbind
113};
114
115/**
116 * Context management:
117 */
118
119static void vmw_context_cotables_unref(struct vmw_private *dev_priv,
120 struct vmw_user_context *uctx)
121{
122 struct vmw_resource *res;
123 int i;
124 u32 cotable_max = has_sm5_context(dev_priv) ?
125 SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
126
127 for (i = 0; i < cotable_max; ++i) {
128 spin_lock(&uctx->cotable_lock);
129 res = uctx->cotables[i];
130 uctx->cotables[i] = NULL;
131 spin_unlock(&uctx->cotable_lock);
132
133 if (res)
134 vmw_resource_unreference(&res);
135 }
136}
137
138static void vmw_hw_context_destroy(struct vmw_resource *res)
139{
140 struct vmw_user_context *uctx =
141 container_of(res, struct vmw_user_context, res);
142 struct vmw_private *dev_priv = res->dev_priv;
143 struct {
144 SVGA3dCmdHeader header;
145 SVGA3dCmdDestroyContext body;
146 } *cmd;
147
148
149 if (res->func->destroy == vmw_gb_context_destroy ||
150 res->func->destroy == vmw_dx_context_destroy) {
151 mutex_lock(&dev_priv->cmdbuf_mutex);
152 vmw_cmdbuf_res_man_destroy(uctx->man);
153 mutex_lock(&dev_priv->binding_mutex);
154 vmw_binding_state_kill(uctx->cbs);
155 (void) res->func->destroy(res);
156 mutex_unlock(&dev_priv->binding_mutex);
157 if (dev_priv->pinned_bo != NULL &&
158 !dev_priv->query_cid_valid)
159 __vmw_execbuf_release_pinned_bo(dev_priv, NULL);
160 mutex_unlock(&dev_priv->cmdbuf_mutex);
161 vmw_context_cotables_unref(dev_priv, uctx);
162 return;
163 }
164
165 vmw_execbuf_release_pinned_bo(dev_priv);
166 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
167 if (unlikely(cmd == NULL))
168 return;
169
170 cmd->header.id = SVGA_3D_CMD_CONTEXT_DESTROY;
171 cmd->header.size = sizeof(cmd->body);
172 cmd->body.cid = res->id;
173
174 vmw_fifo_commit(dev_priv, sizeof(*cmd));
175 vmw_fifo_resource_dec(dev_priv);
176}
177
178static int vmw_gb_context_init(struct vmw_private *dev_priv,
179 bool dx,
180 struct vmw_resource *res,
181 void (*res_free)(struct vmw_resource *res))
182{
183 int ret, i;
184 struct vmw_user_context *uctx =
185 container_of(res, struct vmw_user_context, res);
186
187 res->backup_size = (dx ? sizeof(SVGADXContextMobFormat) :
188 SVGA3D_CONTEXT_DATA_SIZE);
189 ret = vmw_resource_init(dev_priv, res, true,
190 res_free,
191 dx ? &vmw_dx_context_func :
192 &vmw_gb_context_func);
193 if (unlikely(ret != 0))
194 goto out_err;
195
196 if (dev_priv->has_mob) {
197 uctx->man = vmw_cmdbuf_res_man_create(dev_priv);
198 if (IS_ERR(uctx->man)) {
199 ret = PTR_ERR(uctx->man);
200 uctx->man = NULL;
201 goto out_err;
202 }
203 }
204
205 uctx->cbs = vmw_binding_state_alloc(dev_priv);
206 if (IS_ERR(uctx->cbs)) {
207 ret = PTR_ERR(uctx->cbs);
208 goto out_err;
209 }
210
211 spin_lock_init(&uctx->cotable_lock);
212
213 if (dx) {
214 u32 cotable_max = has_sm5_context(dev_priv) ?
215 SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
216 for (i = 0; i < cotable_max; ++i) {
217 uctx->cotables[i] = vmw_cotable_alloc(dev_priv,
218 &uctx->res, i);
219 if (IS_ERR(uctx->cotables[i])) {
220 ret = PTR_ERR(uctx->cotables[i]);
221 goto out_cotables;
222 }
223 }
224 }
225
226 res->hw_destroy = vmw_hw_context_destroy;
227 return 0;
228
229out_cotables:
230 vmw_context_cotables_unref(dev_priv, uctx);
231out_err:
232 if (res_free)
233 res_free(res);
234 else
235 kfree(res);
236 return ret;
237}
238
239static int vmw_context_init(struct vmw_private *dev_priv,
240 struct vmw_resource *res,
241 void (*res_free)(struct vmw_resource *res),
242 bool dx)
243{
244 int ret;
245
246 struct {
247 SVGA3dCmdHeader header;
248 SVGA3dCmdDefineContext body;
249 } *cmd;
250
251 if (dev_priv->has_mob)
252 return vmw_gb_context_init(dev_priv, dx, res, res_free);
253
254 ret = vmw_resource_init(dev_priv, res, false,
255 res_free, &vmw_legacy_context_func);
256
257 if (unlikely(ret != 0)) {
258 DRM_ERROR("Failed to allocate a resource id.\n");
259 goto out_early;
260 }
261
262 if (unlikely(res->id >= SVGA3D_MAX_CONTEXT_IDS)) {
263 DRM_ERROR("Out of hw context ids.\n");
264 vmw_resource_unreference(&res);
265 return -ENOMEM;
266 }
267
268 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
269 if (unlikely(cmd == NULL)) {
270 vmw_resource_unreference(&res);
271 return -ENOMEM;
272 }
273
274 cmd->header.id = SVGA_3D_CMD_CONTEXT_DEFINE;
275 cmd->header.size = sizeof(cmd->body);
276 cmd->body.cid = res->id;
277
278 vmw_fifo_commit(dev_priv, sizeof(*cmd));
279 vmw_fifo_resource_inc(dev_priv);
280 res->hw_destroy = vmw_hw_context_destroy;
281 return 0;
282
283out_early:
284 if (res_free == NULL)
285 kfree(res);
286 else
287 res_free(res);
288 return ret;
289}
290
291
292/*
293 * GB context.
294 */
295
296static int vmw_gb_context_create(struct vmw_resource *res)
297{
298 struct vmw_private *dev_priv = res->dev_priv;
299 int ret;
300 struct {
301 SVGA3dCmdHeader header;
302 SVGA3dCmdDefineGBContext body;
303 } *cmd;
304
305 if (likely(res->id != -1))
306 return 0;
307
308 ret = vmw_resource_alloc_id(res);
309 if (unlikely(ret != 0)) {
310 DRM_ERROR("Failed to allocate a context id.\n");
311 goto out_no_id;
312 }
313
314 if (unlikely(res->id >= VMWGFX_NUM_GB_CONTEXT)) {
315 ret = -EBUSY;
316 goto out_no_fifo;
317 }
318
319 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
320 if (unlikely(cmd == NULL)) {
321 ret = -ENOMEM;
322 goto out_no_fifo;
323 }
324
325 cmd->header.id = SVGA_3D_CMD_DEFINE_GB_CONTEXT;
326 cmd->header.size = sizeof(cmd->body);
327 cmd->body.cid = res->id;
328 vmw_fifo_commit(dev_priv, sizeof(*cmd));
329 vmw_fifo_resource_inc(dev_priv);
330
331 return 0;
332
333out_no_fifo:
334 vmw_resource_release_id(res);
335out_no_id:
336 return ret;
337}
338
339static int vmw_gb_context_bind(struct vmw_resource *res,
340 struct ttm_validate_buffer *val_buf)
341{
342 struct vmw_private *dev_priv = res->dev_priv;
343 struct {
344 SVGA3dCmdHeader header;
345 SVGA3dCmdBindGBContext body;
346 } *cmd;
347 struct ttm_buffer_object *bo = val_buf->bo;
348
349 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
350
351 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
352 if (unlikely(cmd == NULL))
353 return -ENOMEM;
354
355 cmd->header.id = SVGA_3D_CMD_BIND_GB_CONTEXT;
356 cmd->header.size = sizeof(cmd->body);
357 cmd->body.cid = res->id;
358 cmd->body.mobid = bo->mem.start;
359 cmd->body.validContents = res->backup_dirty;
360 res->backup_dirty = false;
361 vmw_fifo_commit(dev_priv, sizeof(*cmd));
362
363 return 0;
364}
365
366static int vmw_gb_context_unbind(struct vmw_resource *res,
367 bool readback,
368 struct ttm_validate_buffer *val_buf)
369{
370 struct vmw_private *dev_priv = res->dev_priv;
371 struct ttm_buffer_object *bo = val_buf->bo;
372 struct vmw_fence_obj *fence;
373 struct vmw_user_context *uctx =
374 container_of(res, struct vmw_user_context, res);
375
376 struct {
377 SVGA3dCmdHeader header;
378 SVGA3dCmdReadbackGBContext body;
379 } *cmd1;
380 struct {
381 SVGA3dCmdHeader header;
382 SVGA3dCmdBindGBContext body;
383 } *cmd2;
384 uint32_t submit_size;
385 uint8_t *cmd;
386
387
388 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
389
390 mutex_lock(&dev_priv->binding_mutex);
391 vmw_binding_state_scrub(uctx->cbs);
392
393 submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0);
394
395 cmd = VMW_FIFO_RESERVE(dev_priv, submit_size);
396 if (unlikely(cmd == NULL)) {
397 mutex_unlock(&dev_priv->binding_mutex);
398 return -ENOMEM;
399 }
400
401 cmd2 = (void *) cmd;
402 if (readback) {
403 cmd1 = (void *) cmd;
404 cmd1->header.id = SVGA_3D_CMD_READBACK_GB_CONTEXT;
405 cmd1->header.size = sizeof(cmd1->body);
406 cmd1->body.cid = res->id;
407 cmd2 = (void *) (&cmd1[1]);
408 }
409 cmd2->header.id = SVGA_3D_CMD_BIND_GB_CONTEXT;
410 cmd2->header.size = sizeof(cmd2->body);
411 cmd2->body.cid = res->id;
412 cmd2->body.mobid = SVGA3D_INVALID_ID;
413
414 vmw_fifo_commit(dev_priv, submit_size);
415 mutex_unlock(&dev_priv->binding_mutex);
416
417 /*
418 * Create a fence object and fence the backup buffer.
419 */
420
421 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
422 &fence, NULL);
423
424 vmw_bo_fence_single(bo, fence);
425
426 if (likely(fence != NULL))
427 vmw_fence_obj_unreference(&fence);
428
429 return 0;
430}
431
432static int vmw_gb_context_destroy(struct vmw_resource *res)
433{
434 struct vmw_private *dev_priv = res->dev_priv;
435 struct {
436 SVGA3dCmdHeader header;
437 SVGA3dCmdDestroyGBContext body;
438 } *cmd;
439
440 if (likely(res->id == -1))
441 return 0;
442
443 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
444 if (unlikely(cmd == NULL))
445 return -ENOMEM;
446
447 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_CONTEXT;
448 cmd->header.size = sizeof(cmd->body);
449 cmd->body.cid = res->id;
450 vmw_fifo_commit(dev_priv, sizeof(*cmd));
451 if (dev_priv->query_cid == res->id)
452 dev_priv->query_cid_valid = false;
453 vmw_resource_release_id(res);
454 vmw_fifo_resource_dec(dev_priv);
455
456 return 0;
457}
458
459/*
460 * DX context.
461 */
462
463static int vmw_dx_context_create(struct vmw_resource *res)
464{
465 struct vmw_private *dev_priv = res->dev_priv;
466 int ret;
467 struct {
468 SVGA3dCmdHeader header;
469 SVGA3dCmdDXDefineContext body;
470 } *cmd;
471
472 if (likely(res->id != -1))
473 return 0;
474
475 ret = vmw_resource_alloc_id(res);
476 if (unlikely(ret != 0)) {
477 DRM_ERROR("Failed to allocate a context id.\n");
478 goto out_no_id;
479 }
480
481 if (unlikely(res->id >= VMWGFX_NUM_DXCONTEXT)) {
482 ret = -EBUSY;
483 goto out_no_fifo;
484 }
485
486 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
487 if (unlikely(cmd == NULL)) {
488 ret = -ENOMEM;
489 goto out_no_fifo;
490 }
491
492 cmd->header.id = SVGA_3D_CMD_DX_DEFINE_CONTEXT;
493 cmd->header.size = sizeof(cmd->body);
494 cmd->body.cid = res->id;
495 vmw_fifo_commit(dev_priv, sizeof(*cmd));
496 vmw_fifo_resource_inc(dev_priv);
497
498 return 0;
499
500out_no_fifo:
501 vmw_resource_release_id(res);
502out_no_id:
503 return ret;
504}
505
506static int vmw_dx_context_bind(struct vmw_resource *res,
507 struct ttm_validate_buffer *val_buf)
508{
509 struct vmw_private *dev_priv = res->dev_priv;
510 struct {
511 SVGA3dCmdHeader header;
512 SVGA3dCmdDXBindContext body;
513 } *cmd;
514 struct ttm_buffer_object *bo = val_buf->bo;
515
516 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
517
518 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
519 if (unlikely(cmd == NULL))
520 return -ENOMEM;
521
522 cmd->header.id = SVGA_3D_CMD_DX_BIND_CONTEXT;
523 cmd->header.size = sizeof(cmd->body);
524 cmd->body.cid = res->id;
525 cmd->body.mobid = bo->mem.start;
526 cmd->body.validContents = res->backup_dirty;
527 res->backup_dirty = false;
528 vmw_fifo_commit(dev_priv, sizeof(*cmd));
529
530
531 return 0;
532}
533
534/**
535 * vmw_dx_context_scrub_cotables - Scrub all bindings and
536 * cotables from a context
537 *
538 * @ctx: Pointer to the context resource
539 * @readback: Whether to save the otable contents on scrubbing.
540 *
541 * COtables must be unbound before their context, but unbinding requires
542 * the backup buffer being reserved, whereas scrubbing does not.
543 * This function scrubs all cotables of a context, potentially reading back
544 * the contents into their backup buffers. However, scrubbing cotables
545 * also makes the device context invalid, so scrub all bindings first so
546 * that doesn't have to be done later with an invalid context.
547 */
548void vmw_dx_context_scrub_cotables(struct vmw_resource *ctx,
549 bool readback)
550{
551 struct vmw_user_context *uctx =
552 container_of(ctx, struct vmw_user_context, res);
553 u32 cotable_max = has_sm5_context(ctx->dev_priv) ?
554 SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
555 int i;
556
557 vmw_binding_state_scrub(uctx->cbs);
558 for (i = 0; i < cotable_max; ++i) {
559 struct vmw_resource *res;
560
561 /* Avoid racing with ongoing cotable destruction. */
562 spin_lock(&uctx->cotable_lock);
563 res = uctx->cotables[vmw_cotable_scrub_order[i]];
564 if (res)
565 res = vmw_resource_reference_unless_doomed(res);
566 spin_unlock(&uctx->cotable_lock);
567 if (!res)
568 continue;
569
570 WARN_ON(vmw_cotable_scrub(res, readback));
571 vmw_resource_unreference(&res);
572 }
573}
574
575static int vmw_dx_context_unbind(struct vmw_resource *res,
576 bool readback,
577 struct ttm_validate_buffer *val_buf)
578{
579 struct vmw_private *dev_priv = res->dev_priv;
580 struct ttm_buffer_object *bo = val_buf->bo;
581 struct vmw_fence_obj *fence;
582 struct vmw_user_context *uctx =
583 container_of(res, struct vmw_user_context, res);
584
585 struct {
586 SVGA3dCmdHeader header;
587 SVGA3dCmdDXReadbackContext body;
588 } *cmd1;
589 struct {
590 SVGA3dCmdHeader header;
591 SVGA3dCmdDXBindContext body;
592 } *cmd2;
593 uint32_t submit_size;
594 uint8_t *cmd;
595
596
597 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
598
599 mutex_lock(&dev_priv->binding_mutex);
600 vmw_dx_context_scrub_cotables(res, readback);
601
602 if (uctx->dx_query_mob && uctx->dx_query_mob->dx_query_ctx &&
603 readback) {
604 WARN_ON(uctx->dx_query_mob->dx_query_ctx != res);
605 if (vmw_query_readback_all(uctx->dx_query_mob))
606 DRM_ERROR("Failed to read back query states\n");
607 }
608
609 submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0);
610
611 cmd = VMW_FIFO_RESERVE(dev_priv, submit_size);
612 if (unlikely(cmd == NULL)) {
613 mutex_unlock(&dev_priv->binding_mutex);
614 return -ENOMEM;
615 }
616
617 cmd2 = (void *) cmd;
618 if (readback) {
619 cmd1 = (void *) cmd;
620 cmd1->header.id = SVGA_3D_CMD_DX_READBACK_CONTEXT;
621 cmd1->header.size = sizeof(cmd1->body);
622 cmd1->body.cid = res->id;
623 cmd2 = (void *) (&cmd1[1]);
624 }
625 cmd2->header.id = SVGA_3D_CMD_DX_BIND_CONTEXT;
626 cmd2->header.size = sizeof(cmd2->body);
627 cmd2->body.cid = res->id;
628 cmd2->body.mobid = SVGA3D_INVALID_ID;
629
630 vmw_fifo_commit(dev_priv, submit_size);
631 mutex_unlock(&dev_priv->binding_mutex);
632
633 /*
634 * Create a fence object and fence the backup buffer.
635 */
636
637 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
638 &fence, NULL);
639
640 vmw_bo_fence_single(bo, fence);
641
642 if (likely(fence != NULL))
643 vmw_fence_obj_unreference(&fence);
644
645 return 0;
646}
647
648static int vmw_dx_context_destroy(struct vmw_resource *res)
649{
650 struct vmw_private *dev_priv = res->dev_priv;
651 struct {
652 SVGA3dCmdHeader header;
653 SVGA3dCmdDXDestroyContext body;
654 } *cmd;
655
656 if (likely(res->id == -1))
657 return 0;
658
659 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
660 if (unlikely(cmd == NULL))
661 return -ENOMEM;
662
663 cmd->header.id = SVGA_3D_CMD_DX_DESTROY_CONTEXT;
664 cmd->header.size = sizeof(cmd->body);
665 cmd->body.cid = res->id;
666 vmw_fifo_commit(dev_priv, sizeof(*cmd));
667 if (dev_priv->query_cid == res->id)
668 dev_priv->query_cid_valid = false;
669 vmw_resource_release_id(res);
670 vmw_fifo_resource_dec(dev_priv);
671
672 return 0;
673}
674
675/**
676 * User-space context management:
677 */
678
679static struct vmw_resource *
680vmw_user_context_base_to_res(struct ttm_base_object *base)
681{
682 return &(container_of(base, struct vmw_user_context, base)->res);
683}
684
685static void vmw_user_context_free(struct vmw_resource *res)
686{
687 struct vmw_user_context *ctx =
688 container_of(res, struct vmw_user_context, res);
689 struct vmw_private *dev_priv = res->dev_priv;
690
691 if (ctx->cbs)
692 vmw_binding_state_free(ctx->cbs);
693
694 (void) vmw_context_bind_dx_query(res, NULL);
695
696 ttm_base_object_kfree(ctx, base);
697 ttm_mem_global_free(vmw_mem_glob(dev_priv),
698 vmw_user_context_size);
699}
700
701/**
702 * This function is called when user space has no more references on the
703 * base object. It releases the base-object's reference on the resource object.
704 */
705
706static void vmw_user_context_base_release(struct ttm_base_object **p_base)
707{
708 struct ttm_base_object *base = *p_base;
709 struct vmw_user_context *ctx =
710 container_of(base, struct vmw_user_context, base);
711 struct vmw_resource *res = &ctx->res;
712
713 *p_base = NULL;
714 vmw_resource_unreference(&res);
715}
716
717int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
718 struct drm_file *file_priv)
719{
720 struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
721 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
722
723 return ttm_ref_object_base_unref(tfile, arg->cid, TTM_REF_USAGE);
724}
725
726static int vmw_context_define(struct drm_device *dev, void *data,
727 struct drm_file *file_priv, bool dx)
728{
729 struct vmw_private *dev_priv = vmw_priv(dev);
730 struct vmw_user_context *ctx;
731 struct vmw_resource *res;
732 struct vmw_resource *tmp;
733 struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
734 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
735 struct ttm_operation_ctx ttm_opt_ctx = {
736 .interruptible = true,
737 .no_wait_gpu = false
738 };
739 int ret;
740
741 if (!has_sm4_context(dev_priv) && dx) {
742 VMW_DEBUG_USER("DX contexts not supported by device.\n");
743 return -EINVAL;
744 }
745
746 if (unlikely(vmw_user_context_size == 0))
747 vmw_user_context_size = ttm_round_pot(sizeof(*ctx)) +
748 ((dev_priv->has_mob) ? vmw_cmdbuf_res_man_size() : 0) +
749 + VMW_IDA_ACC_SIZE + TTM_OBJ_EXTRA_SIZE;
750
751 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
752 if (unlikely(ret != 0))
753 return ret;
754
755 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
756 vmw_user_context_size,
757 &ttm_opt_ctx);
758 if (unlikely(ret != 0)) {
759 if (ret != -ERESTARTSYS)
760 DRM_ERROR("Out of graphics memory for context"
761 " creation.\n");
762 goto out_unlock;
763 }
764
765 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
766 if (unlikely(!ctx)) {
767 ttm_mem_global_free(vmw_mem_glob(dev_priv),
768 vmw_user_context_size);
769 ret = -ENOMEM;
770 goto out_unlock;
771 }
772
773 res = &ctx->res;
774 ctx->base.shareable = false;
775 ctx->base.tfile = NULL;
776
777 /*
778 * From here on, the destructor takes over resource freeing.
779 */
780
781 ret = vmw_context_init(dev_priv, res, vmw_user_context_free, dx);
782 if (unlikely(ret != 0))
783 goto out_unlock;
784
785 tmp = vmw_resource_reference(&ctx->res);
786 ret = ttm_base_object_init(tfile, &ctx->base, false, VMW_RES_CONTEXT,
787 &vmw_user_context_base_release, NULL);
788
789 if (unlikely(ret != 0)) {
790 vmw_resource_unreference(&tmp);
791 goto out_err;
792 }
793
794 arg->cid = ctx->base.handle;
795out_err:
796 vmw_resource_unreference(&res);
797out_unlock:
798 ttm_read_unlock(&dev_priv->reservation_sem);
799 return ret;
800}
801
802int vmw_context_define_ioctl(struct drm_device *dev, void *data,
803 struct drm_file *file_priv)
804{
805 return vmw_context_define(dev, data, file_priv, false);
806}
807
808int vmw_extended_context_define_ioctl(struct drm_device *dev, void *data,
809 struct drm_file *file_priv)
810{
811 union drm_vmw_extended_context_arg *arg = (typeof(arg)) data;
812 struct drm_vmw_context_arg *rep = &arg->rep;
813
814 switch (arg->req) {
815 case drm_vmw_context_legacy:
816 return vmw_context_define(dev, rep, file_priv, false);
817 case drm_vmw_context_dx:
818 return vmw_context_define(dev, rep, file_priv, true);
819 default:
820 break;
821 }
822 return -EINVAL;
823}
824
825/**
826 * vmw_context_binding_list - Return a list of context bindings
827 *
828 * @ctx: The context resource
829 *
830 * Returns the current list of bindings of the given context. Note that
831 * this list becomes stale as soon as the dev_priv::binding_mutex is unlocked.
832 */
833struct list_head *vmw_context_binding_list(struct vmw_resource *ctx)
834{
835 struct vmw_user_context *uctx =
836 container_of(ctx, struct vmw_user_context, res);
837
838 return vmw_binding_state_list(uctx->cbs);
839}
840
841struct vmw_cmdbuf_res_manager *vmw_context_res_man(struct vmw_resource *ctx)
842{
843 return container_of(ctx, struct vmw_user_context, res)->man;
844}
845
846struct vmw_resource *vmw_context_cotable(struct vmw_resource *ctx,
847 SVGACOTableType cotable_type)
848{
849 u32 cotable_max = has_sm5_context(ctx->dev_priv) ?
850 SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
851
852 if (cotable_type >= cotable_max)
853 return ERR_PTR(-EINVAL);
854
855 return container_of(ctx, struct vmw_user_context, res)->
856 cotables[cotable_type];
857}
858
859/**
860 * vmw_context_binding_state -
861 * Return a pointer to a context binding state structure
862 *
863 * @ctx: The context resource
864 *
865 * Returns the current state of bindings of the given context. Note that
866 * this state becomes stale as soon as the dev_priv::binding_mutex is unlocked.
867 */
868struct vmw_ctx_binding_state *
869vmw_context_binding_state(struct vmw_resource *ctx)
870{
871 return container_of(ctx, struct vmw_user_context, res)->cbs;
872}
873
874/**
875 * vmw_context_bind_dx_query -
876 * Sets query MOB for the context. If @mob is NULL, then this function will
877 * remove the association between the MOB and the context. This function
878 * assumes the binding_mutex is held.
879 *
880 * @ctx_res: The context resource
881 * @mob: a reference to the query MOB
882 *
883 * Returns -EINVAL if a MOB has already been set and does not match the one
884 * specified in the parameter. 0 otherwise.
885 */
886int vmw_context_bind_dx_query(struct vmw_resource *ctx_res,
887 struct vmw_buffer_object *mob)
888{
889 struct vmw_user_context *uctx =
890 container_of(ctx_res, struct vmw_user_context, res);
891
892 if (mob == NULL) {
893 if (uctx->dx_query_mob) {
894 uctx->dx_query_mob->dx_query_ctx = NULL;
895 vmw_bo_unreference(&uctx->dx_query_mob);
896 uctx->dx_query_mob = NULL;
897 }
898
899 return 0;
900 }
901
902 /* Can only have one MOB per context for queries */
903 if (uctx->dx_query_mob && uctx->dx_query_mob != mob)
904 return -EINVAL;
905
906 mob->dx_query_ctx = ctx_res;
907
908 if (!uctx->dx_query_mob)
909 uctx->dx_query_mob = vmw_bo_reference(mob);
910
911 return 0;
912}
913
914/**
915 * vmw_context_get_dx_query_mob - Returns non-counted reference to DX query mob
916 *
917 * @ctx_res: The context resource
918 */
919struct vmw_buffer_object *
920vmw_context_get_dx_query_mob(struct vmw_resource *ctx_res)
921{
922 struct vmw_user_context *uctx =
923 container_of(ctx_res, struct vmw_user_context, res);
924
925 return uctx->dx_query_mob;
926}