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1/**************************************************************************
2 *
3 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
4 * All Rights Reserved.
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 "vmwgfx_drv.h"
29#include "vmwgfx_resource_priv.h"
30#include "vmwgfx_binding.h"
31#include "ttm/ttm_placement.h"
32
33struct vmw_user_context {
34 struct ttm_base_object base;
35 struct vmw_resource res;
36 struct vmw_ctx_binding_state *cbs;
37 struct vmw_cmdbuf_res_manager *man;
38 struct vmw_resource *cotables[SVGA_COTABLE_DX10_MAX];
39 spinlock_t cotable_lock;
40 struct vmw_dma_buffer *dx_query_mob;
41};
42
43static void vmw_user_context_free(struct vmw_resource *res);
44static struct vmw_resource *
45vmw_user_context_base_to_res(struct ttm_base_object *base);
46
47static int vmw_gb_context_create(struct vmw_resource *res);
48static int vmw_gb_context_bind(struct vmw_resource *res,
49 struct ttm_validate_buffer *val_buf);
50static int vmw_gb_context_unbind(struct vmw_resource *res,
51 bool readback,
52 struct ttm_validate_buffer *val_buf);
53static int vmw_gb_context_destroy(struct vmw_resource *res);
54static int vmw_dx_context_create(struct vmw_resource *res);
55static int vmw_dx_context_bind(struct vmw_resource *res,
56 struct ttm_validate_buffer *val_buf);
57static int vmw_dx_context_unbind(struct vmw_resource *res,
58 bool readback,
59 struct ttm_validate_buffer *val_buf);
60static int vmw_dx_context_destroy(struct vmw_resource *res);
61
62static uint64_t vmw_user_context_size;
63
64static const struct vmw_user_resource_conv user_context_conv = {
65 .object_type = VMW_RES_CONTEXT,
66 .base_obj_to_res = vmw_user_context_base_to_res,
67 .res_free = vmw_user_context_free
68};
69
70const struct vmw_user_resource_conv *user_context_converter =
71 &user_context_conv;
72
73
74static const struct vmw_res_func vmw_legacy_context_func = {
75 .res_type = vmw_res_context,
76 .needs_backup = false,
77 .may_evict = false,
78 .type_name = "legacy contexts",
79 .backup_placement = NULL,
80 .create = NULL,
81 .destroy = NULL,
82 .bind = NULL,
83 .unbind = NULL
84};
85
86static const struct vmw_res_func vmw_gb_context_func = {
87 .res_type = vmw_res_context,
88 .needs_backup = true,
89 .may_evict = true,
90 .type_name = "guest backed contexts",
91 .backup_placement = &vmw_mob_placement,
92 .create = vmw_gb_context_create,
93 .destroy = vmw_gb_context_destroy,
94 .bind = vmw_gb_context_bind,
95 .unbind = vmw_gb_context_unbind
96};
97
98static const struct vmw_res_func vmw_dx_context_func = {
99 .res_type = vmw_res_dx_context,
100 .needs_backup = true,
101 .may_evict = true,
102 .type_name = "dx contexts",
103 .backup_placement = &vmw_mob_placement,
104 .create = vmw_dx_context_create,
105 .destroy = vmw_dx_context_destroy,
106 .bind = vmw_dx_context_bind,
107 .unbind = vmw_dx_context_unbind
108};
109
110/**
111 * Context management:
112 */
113
114static void vmw_context_cotables_unref(struct vmw_user_context *uctx)
115{
116 struct vmw_resource *res;
117 int i;
118
119 for (i = 0; i < SVGA_COTABLE_DX10_MAX; ++i) {
120 spin_lock(&uctx->cotable_lock);
121 res = uctx->cotables[i];
122 uctx->cotables[i] = NULL;
123 spin_unlock(&uctx->cotable_lock);
124
125 if (res)
126 vmw_resource_unreference(&res);
127 }
128}
129
130static void vmw_hw_context_destroy(struct vmw_resource *res)
131{
132 struct vmw_user_context *uctx =
133 container_of(res, struct vmw_user_context, res);
134 struct vmw_private *dev_priv = res->dev_priv;
135 struct {
136 SVGA3dCmdHeader header;
137 SVGA3dCmdDestroyContext body;
138 } *cmd;
139
140
141 if (res->func->destroy == vmw_gb_context_destroy ||
142 res->func->destroy == vmw_dx_context_destroy) {
143 mutex_lock(&dev_priv->cmdbuf_mutex);
144 vmw_cmdbuf_res_man_destroy(uctx->man);
145 mutex_lock(&dev_priv->binding_mutex);
146 vmw_binding_state_kill(uctx->cbs);
147 (void) res->func->destroy(res);
148 mutex_unlock(&dev_priv->binding_mutex);
149 if (dev_priv->pinned_bo != NULL &&
150 !dev_priv->query_cid_valid)
151 __vmw_execbuf_release_pinned_bo(dev_priv, NULL);
152 mutex_unlock(&dev_priv->cmdbuf_mutex);
153 vmw_context_cotables_unref(uctx);
154 return;
155 }
156
157 vmw_execbuf_release_pinned_bo(dev_priv);
158 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
159 if (unlikely(cmd == NULL)) {
160 DRM_ERROR("Failed reserving FIFO space for surface "
161 "destruction.\n");
162 return;
163 }
164
165 cmd->header.id = SVGA_3D_CMD_CONTEXT_DESTROY;
166 cmd->header.size = sizeof(cmd->body);
167 cmd->body.cid = res->id;
168
169 vmw_fifo_commit(dev_priv, sizeof(*cmd));
170 vmw_fifo_resource_dec(dev_priv);
171}
172
173static int vmw_gb_context_init(struct vmw_private *dev_priv,
174 bool dx,
175 struct vmw_resource *res,
176 void (*res_free)(struct vmw_resource *res))
177{
178 int ret, i;
179 struct vmw_user_context *uctx =
180 container_of(res, struct vmw_user_context, res);
181
182 res->backup_size = (dx ? sizeof(SVGADXContextMobFormat) :
183 SVGA3D_CONTEXT_DATA_SIZE);
184 ret = vmw_resource_init(dev_priv, res, true,
185 res_free,
186 dx ? &vmw_dx_context_func :
187 &vmw_gb_context_func);
188 if (unlikely(ret != 0))
189 goto out_err;
190
191 if (dev_priv->has_mob) {
192 uctx->man = vmw_cmdbuf_res_man_create(dev_priv);
193 if (IS_ERR(uctx->man)) {
194 ret = PTR_ERR(uctx->man);
195 uctx->man = NULL;
196 goto out_err;
197 }
198 }
199
200 uctx->cbs = vmw_binding_state_alloc(dev_priv);
201 if (IS_ERR(uctx->cbs)) {
202 ret = PTR_ERR(uctx->cbs);
203 goto out_err;
204 }
205
206 spin_lock_init(&uctx->cotable_lock);
207
208 if (dx) {
209 for (i = 0; i < SVGA_COTABLE_DX10_MAX; ++i) {
210 uctx->cotables[i] = vmw_cotable_alloc(dev_priv,
211 &uctx->res, i);
212 if (unlikely(uctx->cotables[i] == NULL)) {
213 ret = -ENOMEM;
214 goto out_cotables;
215 }
216 }
217 }
218
219
220
221 vmw_resource_activate(res, 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 DRM_ERROR("Fifo reserve failed.\n");
266 vmw_resource_unreference(&res);
267 return -ENOMEM;
268 }
269
270 cmd->header.id = SVGA_3D_CMD_CONTEXT_DEFINE;
271 cmd->header.size = sizeof(cmd->body);
272 cmd->body.cid = res->id;
273
274 vmw_fifo_commit(dev_priv, sizeof(*cmd));
275 vmw_fifo_resource_inc(dev_priv);
276 vmw_resource_activate(res, vmw_hw_context_destroy);
277 return 0;
278
279out_early:
280 if (res_free == NULL)
281 kfree(res);
282 else
283 res_free(res);
284 return ret;
285}
286
287
288/*
289 * GB context.
290 */
291
292static int vmw_gb_context_create(struct vmw_resource *res)
293{
294 struct vmw_private *dev_priv = res->dev_priv;
295 int ret;
296 struct {
297 SVGA3dCmdHeader header;
298 SVGA3dCmdDefineGBContext body;
299 } *cmd;
300
301 if (likely(res->id != -1))
302 return 0;
303
304 ret = vmw_resource_alloc_id(res);
305 if (unlikely(ret != 0)) {
306 DRM_ERROR("Failed to allocate a context id.\n");
307 goto out_no_id;
308 }
309
310 if (unlikely(res->id >= VMWGFX_NUM_GB_CONTEXT)) {
311 ret = -EBUSY;
312 goto out_no_fifo;
313 }
314
315 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
316 if (unlikely(cmd == NULL)) {
317 DRM_ERROR("Failed reserving FIFO space for context "
318 "creation.\n");
319 ret = -ENOMEM;
320 goto out_no_fifo;
321 }
322
323 cmd->header.id = SVGA_3D_CMD_DEFINE_GB_CONTEXT;
324 cmd->header.size = sizeof(cmd->body);
325 cmd->body.cid = res->id;
326 vmw_fifo_commit(dev_priv, sizeof(*cmd));
327 vmw_fifo_resource_inc(dev_priv);
328
329 return 0;
330
331out_no_fifo:
332 vmw_resource_release_id(res);
333out_no_id:
334 return ret;
335}
336
337static int vmw_gb_context_bind(struct vmw_resource *res,
338 struct ttm_validate_buffer *val_buf)
339{
340 struct vmw_private *dev_priv = res->dev_priv;
341 struct {
342 SVGA3dCmdHeader header;
343 SVGA3dCmdBindGBContext body;
344 } *cmd;
345 struct ttm_buffer_object *bo = val_buf->bo;
346
347 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
348
349 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
350 if (unlikely(cmd == NULL)) {
351 DRM_ERROR("Failed reserving FIFO space for context "
352 "binding.\n");
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 DRM_ERROR("Failed reserving FIFO space for context "
398 "unbinding.\n");
399 mutex_unlock(&dev_priv->binding_mutex);
400 return -ENOMEM;
401 }
402
403 cmd2 = (void *) cmd;
404 if (readback) {
405 cmd1 = (void *) cmd;
406 cmd1->header.id = SVGA_3D_CMD_READBACK_GB_CONTEXT;
407 cmd1->header.size = sizeof(cmd1->body);
408 cmd1->body.cid = res->id;
409 cmd2 = (void *) (&cmd1[1]);
410 }
411 cmd2->header.id = SVGA_3D_CMD_BIND_GB_CONTEXT;
412 cmd2->header.size = sizeof(cmd2->body);
413 cmd2->body.cid = res->id;
414 cmd2->body.mobid = SVGA3D_INVALID_ID;
415
416 vmw_fifo_commit(dev_priv, submit_size);
417 mutex_unlock(&dev_priv->binding_mutex);
418
419 /*
420 * Create a fence object and fence the backup buffer.
421 */
422
423 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
424 &fence, NULL);
425
426 vmw_fence_single_bo(bo, fence);
427
428 if (likely(fence != NULL))
429 vmw_fence_obj_unreference(&fence);
430
431 return 0;
432}
433
434static int vmw_gb_context_destroy(struct vmw_resource *res)
435{
436 struct vmw_private *dev_priv = res->dev_priv;
437 struct {
438 SVGA3dCmdHeader header;
439 SVGA3dCmdDestroyGBContext body;
440 } *cmd;
441
442 if (likely(res->id == -1))
443 return 0;
444
445 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
446 if (unlikely(cmd == NULL)) {
447 DRM_ERROR("Failed reserving FIFO space for context "
448 "destruction.\n");
449 return -ENOMEM;
450 }
451
452 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_CONTEXT;
453 cmd->header.size = sizeof(cmd->body);
454 cmd->body.cid = res->id;
455 vmw_fifo_commit(dev_priv, sizeof(*cmd));
456 if (dev_priv->query_cid == res->id)
457 dev_priv->query_cid_valid = false;
458 vmw_resource_release_id(res);
459 vmw_fifo_resource_dec(dev_priv);
460
461 return 0;
462}
463
464/*
465 * DX context.
466 */
467
468static int vmw_dx_context_create(struct vmw_resource *res)
469{
470 struct vmw_private *dev_priv = res->dev_priv;
471 int ret;
472 struct {
473 SVGA3dCmdHeader header;
474 SVGA3dCmdDXDefineContext body;
475 } *cmd;
476
477 if (likely(res->id != -1))
478 return 0;
479
480 ret = vmw_resource_alloc_id(res);
481 if (unlikely(ret != 0)) {
482 DRM_ERROR("Failed to allocate a context id.\n");
483 goto out_no_id;
484 }
485
486 if (unlikely(res->id >= VMWGFX_NUM_DXCONTEXT)) {
487 ret = -EBUSY;
488 goto out_no_fifo;
489 }
490
491 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
492 if (unlikely(cmd == NULL)) {
493 DRM_ERROR("Failed reserving FIFO space for context "
494 "creation.\n");
495 ret = -ENOMEM;
496 goto out_no_fifo;
497 }
498
499 cmd->header.id = SVGA_3D_CMD_DX_DEFINE_CONTEXT;
500 cmd->header.size = sizeof(cmd->body);
501 cmd->body.cid = res->id;
502 vmw_fifo_commit(dev_priv, sizeof(*cmd));
503 vmw_fifo_resource_inc(dev_priv);
504
505 return 0;
506
507out_no_fifo:
508 vmw_resource_release_id(res);
509out_no_id:
510 return ret;
511}
512
513static int vmw_dx_context_bind(struct vmw_resource *res,
514 struct ttm_validate_buffer *val_buf)
515{
516 struct vmw_private *dev_priv = res->dev_priv;
517 struct {
518 SVGA3dCmdHeader header;
519 SVGA3dCmdDXBindContext body;
520 } *cmd;
521 struct ttm_buffer_object *bo = val_buf->bo;
522
523 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
524
525 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
526 if (unlikely(cmd == NULL)) {
527 DRM_ERROR("Failed reserving FIFO space for context "
528 "binding.\n");
529 return -ENOMEM;
530 }
531
532 cmd->header.id = SVGA_3D_CMD_DX_BIND_CONTEXT;
533 cmd->header.size = sizeof(cmd->body);
534 cmd->body.cid = res->id;
535 cmd->body.mobid = bo->mem.start;
536 cmd->body.validContents = res->backup_dirty;
537 res->backup_dirty = false;
538 vmw_fifo_commit(dev_priv, sizeof(*cmd));
539
540
541 return 0;
542}
543
544/**
545 * vmw_dx_context_scrub_cotables - Scrub all bindings and
546 * cotables from a context
547 *
548 * @ctx: Pointer to the context resource
549 * @readback: Whether to save the otable contents on scrubbing.
550 *
551 * COtables must be unbound before their context, but unbinding requires
552 * the backup buffer being reserved, whereas scrubbing does not.
553 * This function scrubs all cotables of a context, potentially reading back
554 * the contents into their backup buffers. However, scrubbing cotables
555 * also makes the device context invalid, so scrub all bindings first so
556 * that doesn't have to be done later with an invalid context.
557 */
558void vmw_dx_context_scrub_cotables(struct vmw_resource *ctx,
559 bool readback)
560{
561 struct vmw_user_context *uctx =
562 container_of(ctx, struct vmw_user_context, res);
563 int i;
564
565 vmw_binding_state_scrub(uctx->cbs);
566 for (i = 0; i < SVGA_COTABLE_DX10_MAX; ++i) {
567 struct vmw_resource *res;
568
569 /* Avoid racing with ongoing cotable destruction. */
570 spin_lock(&uctx->cotable_lock);
571 res = uctx->cotables[vmw_cotable_scrub_order[i]];
572 if (res)
573 res = vmw_resource_reference_unless_doomed(res);
574 spin_unlock(&uctx->cotable_lock);
575 if (!res)
576 continue;
577
578 WARN_ON(vmw_cotable_scrub(res, readback));
579 vmw_resource_unreference(&res);
580 }
581}
582
583static int vmw_dx_context_unbind(struct vmw_resource *res,
584 bool readback,
585 struct ttm_validate_buffer *val_buf)
586{
587 struct vmw_private *dev_priv = res->dev_priv;
588 struct ttm_buffer_object *bo = val_buf->bo;
589 struct vmw_fence_obj *fence;
590 struct vmw_user_context *uctx =
591 container_of(res, struct vmw_user_context, res);
592
593 struct {
594 SVGA3dCmdHeader header;
595 SVGA3dCmdDXReadbackContext body;
596 } *cmd1;
597 struct {
598 SVGA3dCmdHeader header;
599 SVGA3dCmdDXBindContext body;
600 } *cmd2;
601 uint32_t submit_size;
602 uint8_t *cmd;
603
604
605 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
606
607 mutex_lock(&dev_priv->binding_mutex);
608 vmw_dx_context_scrub_cotables(res, readback);
609
610 if (uctx->dx_query_mob && uctx->dx_query_mob->dx_query_ctx &&
611 readback) {
612 WARN_ON(uctx->dx_query_mob->dx_query_ctx != res);
613 if (vmw_query_readback_all(uctx->dx_query_mob))
614 DRM_ERROR("Failed to read back query states\n");
615 }
616
617 submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0);
618
619 cmd = vmw_fifo_reserve(dev_priv, submit_size);
620 if (unlikely(cmd == NULL)) {
621 DRM_ERROR("Failed reserving FIFO space for context "
622 "unbinding.\n");
623 mutex_unlock(&dev_priv->binding_mutex);
624 return -ENOMEM;
625 }
626
627 cmd2 = (void *) cmd;
628 if (readback) {
629 cmd1 = (void *) cmd;
630 cmd1->header.id = SVGA_3D_CMD_DX_READBACK_CONTEXT;
631 cmd1->header.size = sizeof(cmd1->body);
632 cmd1->body.cid = res->id;
633 cmd2 = (void *) (&cmd1[1]);
634 }
635 cmd2->header.id = SVGA_3D_CMD_DX_BIND_CONTEXT;
636 cmd2->header.size = sizeof(cmd2->body);
637 cmd2->body.cid = res->id;
638 cmd2->body.mobid = SVGA3D_INVALID_ID;
639
640 vmw_fifo_commit(dev_priv, submit_size);
641 mutex_unlock(&dev_priv->binding_mutex);
642
643 /*
644 * Create a fence object and fence the backup buffer.
645 */
646
647 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
648 &fence, NULL);
649
650 vmw_fence_single_bo(bo, fence);
651
652 if (likely(fence != NULL))
653 vmw_fence_obj_unreference(&fence);
654
655 return 0;
656}
657
658static int vmw_dx_context_destroy(struct vmw_resource *res)
659{
660 struct vmw_private *dev_priv = res->dev_priv;
661 struct {
662 SVGA3dCmdHeader header;
663 SVGA3dCmdDXDestroyContext body;
664 } *cmd;
665
666 if (likely(res->id == -1))
667 return 0;
668
669 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
670 if (unlikely(cmd == NULL)) {
671 DRM_ERROR("Failed reserving FIFO space for context "
672 "destruction.\n");
673 return -ENOMEM;
674 }
675
676 cmd->header.id = SVGA_3D_CMD_DX_DESTROY_CONTEXT;
677 cmd->header.size = sizeof(cmd->body);
678 cmd->body.cid = res->id;
679 vmw_fifo_commit(dev_priv, sizeof(*cmd));
680 if (dev_priv->query_cid == res->id)
681 dev_priv->query_cid_valid = false;
682 vmw_resource_release_id(res);
683 vmw_fifo_resource_dec(dev_priv);
684
685 return 0;
686}
687
688/**
689 * User-space context management:
690 */
691
692static struct vmw_resource *
693vmw_user_context_base_to_res(struct ttm_base_object *base)
694{
695 return &(container_of(base, struct vmw_user_context, base)->res);
696}
697
698static void vmw_user_context_free(struct vmw_resource *res)
699{
700 struct vmw_user_context *ctx =
701 container_of(res, struct vmw_user_context, res);
702 struct vmw_private *dev_priv = res->dev_priv;
703
704 if (ctx->cbs)
705 vmw_binding_state_free(ctx->cbs);
706
707 (void) vmw_context_bind_dx_query(res, NULL);
708
709 ttm_base_object_kfree(ctx, base);
710 ttm_mem_global_free(vmw_mem_glob(dev_priv),
711 vmw_user_context_size);
712}
713
714/**
715 * This function is called when user space has no more references on the
716 * base object. It releases the base-object's reference on the resource object.
717 */
718
719static void vmw_user_context_base_release(struct ttm_base_object **p_base)
720{
721 struct ttm_base_object *base = *p_base;
722 struct vmw_user_context *ctx =
723 container_of(base, struct vmw_user_context, base);
724 struct vmw_resource *res = &ctx->res;
725
726 *p_base = NULL;
727 vmw_resource_unreference(&res);
728}
729
730int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
731 struct drm_file *file_priv)
732{
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
736 return ttm_ref_object_base_unref(tfile, arg->cid, TTM_REF_USAGE);
737}
738
739static int vmw_context_define(struct drm_device *dev, void *data,
740 struct drm_file *file_priv, bool dx)
741{
742 struct vmw_private *dev_priv = vmw_priv(dev);
743 struct vmw_user_context *ctx;
744 struct vmw_resource *res;
745 struct vmw_resource *tmp;
746 struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
747 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
748 int ret;
749
750 if (!dev_priv->has_dx && dx) {
751 DRM_ERROR("DX contexts not supported by device.\n");
752 return -EINVAL;
753 }
754
755 /*
756 * Approximate idr memory usage with 128 bytes. It will be limited
757 * by maximum number_of contexts anyway.
758 */
759
760 if (unlikely(vmw_user_context_size == 0))
761 vmw_user_context_size = ttm_round_pot(sizeof(*ctx)) + 128 +
762 ((dev_priv->has_mob) ? vmw_cmdbuf_res_man_size() : 0);
763
764 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
765 if (unlikely(ret != 0))
766 return ret;
767
768 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
769 vmw_user_context_size,
770 false, true);
771 if (unlikely(ret != 0)) {
772 if (ret != -ERESTARTSYS)
773 DRM_ERROR("Out of graphics memory for context"
774 " creation.\n");
775 goto out_unlock;
776 }
777
778 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
779 if (unlikely(ctx == NULL)) {
780 ttm_mem_global_free(vmw_mem_glob(dev_priv),
781 vmw_user_context_size);
782 ret = -ENOMEM;
783 goto out_unlock;
784 }
785
786 res = &ctx->res;
787 ctx->base.shareable = false;
788 ctx->base.tfile = NULL;
789
790 /*
791 * From here on, the destructor takes over resource freeing.
792 */
793
794 ret = vmw_context_init(dev_priv, res, vmw_user_context_free, dx);
795 if (unlikely(ret != 0))
796 goto out_unlock;
797
798 tmp = vmw_resource_reference(&ctx->res);
799 ret = ttm_base_object_init(tfile, &ctx->base, false, VMW_RES_CONTEXT,
800 &vmw_user_context_base_release, NULL);
801
802 if (unlikely(ret != 0)) {
803 vmw_resource_unreference(&tmp);
804 goto out_err;
805 }
806
807 arg->cid = ctx->base.hash.key;
808out_err:
809 vmw_resource_unreference(&res);
810out_unlock:
811 ttm_read_unlock(&dev_priv->reservation_sem);
812 return ret;
813}
814
815int vmw_context_define_ioctl(struct drm_device *dev, void *data,
816 struct drm_file *file_priv)
817{
818 return vmw_context_define(dev, data, file_priv, false);
819}
820
821int vmw_extended_context_define_ioctl(struct drm_device *dev, void *data,
822 struct drm_file *file_priv)
823{
824 union drm_vmw_extended_context_arg *arg = (typeof(arg)) data;
825 struct drm_vmw_context_arg *rep = &arg->rep;
826
827 switch (arg->req) {
828 case drm_vmw_context_legacy:
829 return vmw_context_define(dev, rep, file_priv, false);
830 case drm_vmw_context_dx:
831 return vmw_context_define(dev, rep, file_priv, true);
832 default:
833 break;
834 }
835 return -EINVAL;
836}
837
838/**
839 * vmw_context_binding_list - Return a list of context bindings
840 *
841 * @ctx: The context resource
842 *
843 * Returns the current list of bindings of the given context. Note that
844 * this list becomes stale as soon as the dev_priv::binding_mutex is unlocked.
845 */
846struct list_head *vmw_context_binding_list(struct vmw_resource *ctx)
847{
848 struct vmw_user_context *uctx =
849 container_of(ctx, struct vmw_user_context, res);
850
851 return vmw_binding_state_list(uctx->cbs);
852}
853
854struct vmw_cmdbuf_res_manager *vmw_context_res_man(struct vmw_resource *ctx)
855{
856 return container_of(ctx, struct vmw_user_context, res)->man;
857}
858
859struct vmw_resource *vmw_context_cotable(struct vmw_resource *ctx,
860 SVGACOTableType cotable_type)
861{
862 if (cotable_type >= SVGA_COTABLE_DX10_MAX)
863 return ERR_PTR(-EINVAL);
864
865 return vmw_resource_reference
866 (container_of(ctx, struct vmw_user_context, res)->
867 cotables[cotable_type]);
868}
869
870/**
871 * vmw_context_binding_state -
872 * Return a pointer to a context binding state structure
873 *
874 * @ctx: The context resource
875 *
876 * Returns the current state of bindings of the given context. Note that
877 * this state becomes stale as soon as the dev_priv::binding_mutex is unlocked.
878 */
879struct vmw_ctx_binding_state *
880vmw_context_binding_state(struct vmw_resource *ctx)
881{
882 return container_of(ctx, struct vmw_user_context, res)->cbs;
883}
884
885/**
886 * vmw_context_bind_dx_query -
887 * Sets query MOB for the context. If @mob is NULL, then this function will
888 * remove the association between the MOB and the context. This function
889 * assumes the binding_mutex is held.
890 *
891 * @ctx_res: The context resource
892 * @mob: a reference to the query MOB
893 *
894 * Returns -EINVAL if a MOB has already been set and does not match the one
895 * specified in the parameter. 0 otherwise.
896 */
897int vmw_context_bind_dx_query(struct vmw_resource *ctx_res,
898 struct vmw_dma_buffer *mob)
899{
900 struct vmw_user_context *uctx =
901 container_of(ctx_res, struct vmw_user_context, res);
902
903 if (mob == NULL) {
904 if (uctx->dx_query_mob) {
905 uctx->dx_query_mob->dx_query_ctx = NULL;
906 vmw_dmabuf_unreference(&uctx->dx_query_mob);
907 uctx->dx_query_mob = NULL;
908 }
909
910 return 0;
911 }
912
913 /* Can only have one MOB per context for queries */
914 if (uctx->dx_query_mob && uctx->dx_query_mob != mob)
915 return -EINVAL;
916
917 mob->dx_query_ctx = ctx_res;
918
919 if (!uctx->dx_query_mob)
920 uctx->dx_query_mob = vmw_dmabuf_reference(mob);
921
922 return 0;
923}
924
925/**
926 * vmw_context_get_dx_query_mob - Returns non-counted reference to DX query mob
927 *
928 * @ctx_res: The context resource
929 */
930struct vmw_dma_buffer *
931vmw_context_get_dx_query_mob(struct vmw_resource *ctx_res)
932{
933 struct vmw_user_context *uctx =
934 container_of(ctx_res, struct vmw_user_context, res);
935
936 return uctx->dx_query_mob;
937}
1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/**************************************************************************
3 *
4 * Copyright 2009-2023 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_binding.h"
31#include "vmwgfx_bo.h"
32#include "vmwgfx_drv.h"
33#include "vmwgfx_resource_priv.h"
34
35struct vmw_user_context {
36 struct ttm_base_object base;
37 struct vmw_resource res;
38 struct vmw_ctx_binding_state *cbs;
39 struct vmw_cmdbuf_res_manager *man;
40 struct vmw_resource *cotables[SVGA_COTABLE_MAX];
41 spinlock_t cotable_lock;
42 struct vmw_bo *dx_query_mob;
43};
44
45static void vmw_user_context_free(struct vmw_resource *res);
46static struct vmw_resource *
47vmw_user_context_base_to_res(struct ttm_base_object *base);
48
49static int vmw_gb_context_create(struct vmw_resource *res);
50static int vmw_gb_context_bind(struct vmw_resource *res,
51 struct ttm_validate_buffer *val_buf);
52static int vmw_gb_context_unbind(struct vmw_resource *res,
53 bool readback,
54 struct ttm_validate_buffer *val_buf);
55static int vmw_gb_context_destroy(struct vmw_resource *res);
56static int vmw_dx_context_create(struct vmw_resource *res);
57static int vmw_dx_context_bind(struct vmw_resource *res,
58 struct ttm_validate_buffer *val_buf);
59static int vmw_dx_context_unbind(struct vmw_resource *res,
60 bool readback,
61 struct ttm_validate_buffer *val_buf);
62static int vmw_dx_context_destroy(struct vmw_resource *res);
63
64static const struct vmw_user_resource_conv user_context_conv = {
65 .object_type = VMW_RES_CONTEXT,
66 .base_obj_to_res = vmw_user_context_base_to_res,
67 .res_free = vmw_user_context_free
68};
69
70const struct vmw_user_resource_conv *user_context_converter =
71 &user_context_conv;
72
73
74static const struct vmw_res_func vmw_legacy_context_func = {
75 .res_type = vmw_res_context,
76 .needs_guest_memory = false,
77 .may_evict = false,
78 .type_name = "legacy contexts",
79 .domain = VMW_BO_DOMAIN_SYS,
80 .busy_domain = VMW_BO_DOMAIN_SYS,
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_guest_memory = true,
90 .may_evict = true,
91 .prio = 3,
92 .dirty_prio = 3,
93 .type_name = "guest backed contexts",
94 .domain = VMW_BO_DOMAIN_MOB,
95 .busy_domain = VMW_BO_DOMAIN_MOB,
96 .create = vmw_gb_context_create,
97 .destroy = vmw_gb_context_destroy,
98 .bind = vmw_gb_context_bind,
99 .unbind = vmw_gb_context_unbind
100};
101
102static const struct vmw_res_func vmw_dx_context_func = {
103 .res_type = vmw_res_dx_context,
104 .needs_guest_memory = true,
105 .may_evict = true,
106 .prio = 3,
107 .dirty_prio = 3,
108 .type_name = "dx contexts",
109 .domain = VMW_BO_DOMAIN_MOB,
110 .busy_domain = VMW_BO_DOMAIN_MOB,
111 .create = vmw_dx_context_create,
112 .destroy = vmw_dx_context_destroy,
113 .bind = vmw_dx_context_bind,
114 .unbind = vmw_dx_context_unbind
115};
116
117/*
118 * Context management:
119 */
120
121static void vmw_context_cotables_unref(struct vmw_private *dev_priv,
122 struct vmw_user_context *uctx)
123{
124 struct vmw_resource *res;
125 int i;
126 u32 cotable_max = has_sm5_context(dev_priv) ?
127 SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
128
129 for (i = 0; i < cotable_max; ++i) {
130 spin_lock(&uctx->cotable_lock);
131 res = uctx->cotables[i];
132 uctx->cotables[i] = NULL;
133 spin_unlock(&uctx->cotable_lock);
134
135 if (res)
136 vmw_resource_unreference(&res);
137 }
138}
139
140static void vmw_hw_context_destroy(struct vmw_resource *res)
141{
142 struct vmw_user_context *uctx =
143 container_of(res, struct vmw_user_context, res);
144 struct vmw_private *dev_priv = res->dev_priv;
145 struct {
146 SVGA3dCmdHeader header;
147 SVGA3dCmdDestroyContext body;
148 } *cmd;
149
150
151 if (res->func->destroy == vmw_gb_context_destroy ||
152 res->func->destroy == vmw_dx_context_destroy) {
153 mutex_lock(&dev_priv->cmdbuf_mutex);
154 vmw_cmdbuf_res_man_destroy(uctx->man);
155 mutex_lock(&dev_priv->binding_mutex);
156 vmw_binding_state_kill(uctx->cbs);
157 (void) res->func->destroy(res);
158 mutex_unlock(&dev_priv->binding_mutex);
159 if (dev_priv->pinned_bo != NULL &&
160 !dev_priv->query_cid_valid)
161 __vmw_execbuf_release_pinned_bo(dev_priv, NULL);
162 mutex_unlock(&dev_priv->cmdbuf_mutex);
163 vmw_context_cotables_unref(dev_priv, uctx);
164 return;
165 }
166
167 vmw_execbuf_release_pinned_bo(dev_priv);
168 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
169 if (unlikely(cmd == NULL))
170 return;
171
172 cmd->header.id = SVGA_3D_CMD_CONTEXT_DESTROY;
173 cmd->header.size = sizeof(cmd->body);
174 cmd->body.cid = res->id;
175
176 vmw_cmd_commit(dev_priv, sizeof(*cmd));
177 vmw_fifo_resource_dec(dev_priv);
178}
179
180static int vmw_gb_context_init(struct vmw_private *dev_priv,
181 bool dx,
182 struct vmw_resource *res,
183 void (*res_free)(struct vmw_resource *res))
184{
185 int ret, i;
186 struct vmw_user_context *uctx =
187 container_of(res, struct vmw_user_context, res);
188
189 res->guest_memory_size = (dx ? sizeof(SVGADXContextMobFormat) :
190 sizeof(SVGAGBContextData));
191 ret = vmw_resource_init(dev_priv, res, true,
192 res_free,
193 dx ? &vmw_dx_context_func :
194 &vmw_gb_context_func);
195 if (unlikely(ret != 0))
196 goto out_err;
197
198 if (dev_priv->has_mob) {
199 uctx->man = vmw_cmdbuf_res_man_create(dev_priv);
200 if (IS_ERR(uctx->man)) {
201 ret = PTR_ERR(uctx->man);
202 uctx->man = NULL;
203 goto out_err;
204 }
205 }
206
207 uctx->cbs = vmw_binding_state_alloc(dev_priv);
208 if (IS_ERR(uctx->cbs)) {
209 ret = PTR_ERR(uctx->cbs);
210 goto out_err;
211 }
212
213 spin_lock_init(&uctx->cotable_lock);
214
215 if (dx) {
216 u32 cotable_max = has_sm5_context(dev_priv) ?
217 SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
218 for (i = 0; i < cotable_max; ++i) {
219 uctx->cotables[i] = vmw_cotable_alloc(dev_priv,
220 &uctx->res, i);
221 if (IS_ERR(uctx->cotables[i])) {
222 ret = PTR_ERR(uctx->cotables[i]);
223 goto out_cotables;
224 }
225 }
226 }
227
228 res->hw_destroy = vmw_hw_context_destroy;
229 return 0;
230
231out_cotables:
232 vmw_context_cotables_unref(dev_priv, uctx);
233out_err:
234 if (res_free)
235 res_free(res);
236 else
237 kfree(res);
238 return ret;
239}
240
241static int vmw_context_init(struct vmw_private *dev_priv,
242 struct vmw_resource *res,
243 void (*res_free)(struct vmw_resource *res),
244 bool dx)
245{
246 int ret;
247
248 struct {
249 SVGA3dCmdHeader header;
250 SVGA3dCmdDefineContext body;
251 } *cmd;
252
253 if (dev_priv->has_mob)
254 return vmw_gb_context_init(dev_priv, dx, res, res_free);
255
256 ret = vmw_resource_init(dev_priv, res, false,
257 res_free, &vmw_legacy_context_func);
258
259 if (unlikely(ret != 0)) {
260 DRM_ERROR("Failed to allocate a resource id.\n");
261 goto out_early;
262 }
263
264 if (unlikely(res->id >= SVGA3D_HB_MAX_CONTEXT_IDS)) {
265 DRM_ERROR("Out of hw context ids.\n");
266 vmw_resource_unreference(&res);
267 return -ENOMEM;
268 }
269
270 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
271 if (unlikely(cmd == NULL)) {
272 vmw_resource_unreference(&res);
273 return -ENOMEM;
274 }
275
276 cmd->header.id = SVGA_3D_CMD_CONTEXT_DEFINE;
277 cmd->header.size = sizeof(cmd->body);
278 cmd->body.cid = res->id;
279
280 vmw_cmd_commit(dev_priv, sizeof(*cmd));
281 vmw_fifo_resource_inc(dev_priv);
282 res->hw_destroy = vmw_hw_context_destroy;
283 return 0;
284
285out_early:
286 if (res_free == NULL)
287 kfree(res);
288 else
289 res_free(res);
290 return ret;
291}
292
293
294/*
295 * GB context.
296 */
297
298static int vmw_gb_context_create(struct vmw_resource *res)
299{
300 struct vmw_private *dev_priv = res->dev_priv;
301 int ret;
302 struct {
303 SVGA3dCmdHeader header;
304 SVGA3dCmdDefineGBContext body;
305 } *cmd;
306
307 if (likely(res->id != -1))
308 return 0;
309
310 ret = vmw_resource_alloc_id(res);
311 if (unlikely(ret != 0)) {
312 DRM_ERROR("Failed to allocate a context id.\n");
313 goto out_no_id;
314 }
315
316 if (unlikely(res->id >= VMWGFX_NUM_GB_CONTEXT)) {
317 ret = -EBUSY;
318 goto out_no_fifo;
319 }
320
321 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
322 if (unlikely(cmd == NULL)) {
323 ret = -ENOMEM;
324 goto out_no_fifo;
325 }
326
327 cmd->header.id = SVGA_3D_CMD_DEFINE_GB_CONTEXT;
328 cmd->header.size = sizeof(cmd->body);
329 cmd->body.cid = res->id;
330 vmw_cmd_commit(dev_priv, sizeof(*cmd));
331 vmw_fifo_resource_inc(dev_priv);
332
333 return 0;
334
335out_no_fifo:
336 vmw_resource_release_id(res);
337out_no_id:
338 return ret;
339}
340
341static int vmw_gb_context_bind(struct vmw_resource *res,
342 struct ttm_validate_buffer *val_buf)
343{
344 struct vmw_private *dev_priv = res->dev_priv;
345 struct {
346 SVGA3dCmdHeader header;
347 SVGA3dCmdBindGBContext body;
348 } *cmd;
349 struct ttm_buffer_object *bo = val_buf->bo;
350
351 BUG_ON(bo->resource->mem_type != VMW_PL_MOB);
352
353 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
354 if (unlikely(cmd == NULL))
355 return -ENOMEM;
356
357 cmd->header.id = SVGA_3D_CMD_BIND_GB_CONTEXT;
358 cmd->header.size = sizeof(cmd->body);
359 cmd->body.cid = res->id;
360 cmd->body.mobid = bo->resource->start;
361 cmd->body.validContents = res->guest_memory_dirty;
362 res->guest_memory_dirty = false;
363 vmw_cmd_commit(dev_priv, sizeof(*cmd));
364
365 return 0;
366}
367
368static int vmw_gb_context_unbind(struct vmw_resource *res,
369 bool readback,
370 struct ttm_validate_buffer *val_buf)
371{
372 struct vmw_private *dev_priv = res->dev_priv;
373 struct ttm_buffer_object *bo = val_buf->bo;
374 struct vmw_fence_obj *fence;
375 struct vmw_user_context *uctx =
376 container_of(res, struct vmw_user_context, res);
377
378 struct {
379 SVGA3dCmdHeader header;
380 SVGA3dCmdReadbackGBContext body;
381 } *cmd1;
382 struct {
383 SVGA3dCmdHeader header;
384 SVGA3dCmdBindGBContext body;
385 } *cmd2;
386 uint32_t submit_size;
387 uint8_t *cmd;
388
389
390 BUG_ON(bo->resource->mem_type != VMW_PL_MOB);
391
392 mutex_lock(&dev_priv->binding_mutex);
393 vmw_binding_state_scrub(uctx->cbs);
394
395 submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0);
396
397 cmd = VMW_CMD_RESERVE(dev_priv, submit_size);
398 if (unlikely(cmd == NULL)) {
399 mutex_unlock(&dev_priv->binding_mutex);
400 return -ENOMEM;
401 }
402
403 cmd2 = (void *) cmd;
404 if (readback) {
405 cmd1 = (void *) cmd;
406 cmd1->header.id = SVGA_3D_CMD_READBACK_GB_CONTEXT;
407 cmd1->header.size = sizeof(cmd1->body);
408 cmd1->body.cid = res->id;
409 cmd2 = (void *) (&cmd1[1]);
410 }
411 cmd2->header.id = SVGA_3D_CMD_BIND_GB_CONTEXT;
412 cmd2->header.size = sizeof(cmd2->body);
413 cmd2->body.cid = res->id;
414 cmd2->body.mobid = SVGA3D_INVALID_ID;
415
416 vmw_cmd_commit(dev_priv, submit_size);
417 mutex_unlock(&dev_priv->binding_mutex);
418
419 /*
420 * Create a fence object and fence the backup buffer.
421 */
422
423 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
424 &fence, NULL);
425
426 vmw_bo_fence_single(bo, fence);
427
428 if (likely(fence != NULL))
429 vmw_fence_obj_unreference(&fence);
430
431 return 0;
432}
433
434static int vmw_gb_context_destroy(struct vmw_resource *res)
435{
436 struct vmw_private *dev_priv = res->dev_priv;
437 struct {
438 SVGA3dCmdHeader header;
439 SVGA3dCmdDestroyGBContext body;
440 } *cmd;
441
442 if (likely(res->id == -1))
443 return 0;
444
445 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
446 if (unlikely(cmd == NULL))
447 return -ENOMEM;
448
449 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_CONTEXT;
450 cmd->header.size = sizeof(cmd->body);
451 cmd->body.cid = res->id;
452 vmw_cmd_commit(dev_priv, sizeof(*cmd));
453 if (dev_priv->query_cid == res->id)
454 dev_priv->query_cid_valid = false;
455 vmw_resource_release_id(res);
456 vmw_fifo_resource_dec(dev_priv);
457
458 return 0;
459}
460
461/*
462 * DX context.
463 */
464
465static int vmw_dx_context_create(struct vmw_resource *res)
466{
467 struct vmw_private *dev_priv = res->dev_priv;
468 int ret;
469 struct {
470 SVGA3dCmdHeader header;
471 SVGA3dCmdDXDefineContext body;
472 } *cmd;
473
474 if (likely(res->id != -1))
475 return 0;
476
477 ret = vmw_resource_alloc_id(res);
478 if (unlikely(ret != 0)) {
479 DRM_ERROR("Failed to allocate a context id.\n");
480 goto out_no_id;
481 }
482
483 if (unlikely(res->id >= VMWGFX_NUM_DXCONTEXT)) {
484 ret = -EBUSY;
485 goto out_no_fifo;
486 }
487
488 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
489 if (unlikely(cmd == NULL)) {
490 ret = -ENOMEM;
491 goto out_no_fifo;
492 }
493
494 cmd->header.id = SVGA_3D_CMD_DX_DEFINE_CONTEXT;
495 cmd->header.size = sizeof(cmd->body);
496 cmd->body.cid = res->id;
497 vmw_cmd_commit(dev_priv, sizeof(*cmd));
498 vmw_fifo_resource_inc(dev_priv);
499
500 return 0;
501
502out_no_fifo:
503 vmw_resource_release_id(res);
504out_no_id:
505 return ret;
506}
507
508static int vmw_dx_context_bind(struct vmw_resource *res,
509 struct ttm_validate_buffer *val_buf)
510{
511 struct vmw_private *dev_priv = res->dev_priv;
512 struct {
513 SVGA3dCmdHeader header;
514 SVGA3dCmdDXBindContext body;
515 } *cmd;
516 struct ttm_buffer_object *bo = val_buf->bo;
517
518 BUG_ON(bo->resource->mem_type != VMW_PL_MOB);
519
520 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
521 if (unlikely(cmd == NULL))
522 return -ENOMEM;
523
524 cmd->header.id = SVGA_3D_CMD_DX_BIND_CONTEXT;
525 cmd->header.size = sizeof(cmd->body);
526 cmd->body.cid = res->id;
527 cmd->body.mobid = bo->resource->start;
528 cmd->body.validContents = res->guest_memory_dirty;
529 res->guest_memory_dirty = false;
530 vmw_cmd_commit(dev_priv, sizeof(*cmd));
531
532
533 return 0;
534}
535
536/**
537 * vmw_dx_context_scrub_cotables - Scrub all bindings and
538 * cotables from a context
539 *
540 * @ctx: Pointer to the context resource
541 * @readback: Whether to save the otable contents on scrubbing.
542 *
543 * COtables must be unbound before their context, but unbinding requires
544 * the backup buffer being reserved, whereas scrubbing does not.
545 * This function scrubs all cotables of a context, potentially reading back
546 * the contents into their backup buffers. However, scrubbing cotables
547 * also makes the device context invalid, so scrub all bindings first so
548 * that doesn't have to be done later with an invalid context.
549 */
550void vmw_dx_context_scrub_cotables(struct vmw_resource *ctx,
551 bool readback)
552{
553 struct vmw_user_context *uctx =
554 container_of(ctx, struct vmw_user_context, res);
555 u32 cotable_max = has_sm5_context(ctx->dev_priv) ?
556 SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
557 int i;
558
559 vmw_binding_state_scrub(uctx->cbs);
560 for (i = 0; i < cotable_max; ++i) {
561 struct vmw_resource *res;
562
563 /* Avoid racing with ongoing cotable destruction. */
564 spin_lock(&uctx->cotable_lock);
565 res = uctx->cotables[vmw_cotable_scrub_order[i]];
566 if (res)
567 res = vmw_resource_reference_unless_doomed(res);
568 spin_unlock(&uctx->cotable_lock);
569 if (!res)
570 continue;
571
572 WARN_ON(vmw_cotable_scrub(res, readback));
573 vmw_resource_unreference(&res);
574 }
575}
576
577static int vmw_dx_context_unbind(struct vmw_resource *res,
578 bool readback,
579 struct ttm_validate_buffer *val_buf)
580{
581 struct vmw_private *dev_priv = res->dev_priv;
582 struct ttm_buffer_object *bo = val_buf->bo;
583 struct vmw_fence_obj *fence;
584 struct vmw_user_context *uctx =
585 container_of(res, struct vmw_user_context, res);
586
587 struct {
588 SVGA3dCmdHeader header;
589 SVGA3dCmdDXReadbackContext body;
590 } *cmd1;
591 struct {
592 SVGA3dCmdHeader header;
593 SVGA3dCmdDXBindContext body;
594 } *cmd2;
595 uint32_t submit_size;
596 uint8_t *cmd;
597
598
599 BUG_ON(bo->resource->mem_type != VMW_PL_MOB);
600
601 mutex_lock(&dev_priv->binding_mutex);
602 vmw_dx_context_scrub_cotables(res, readback);
603
604 if (uctx->dx_query_mob && uctx->dx_query_mob->dx_query_ctx &&
605 readback) {
606 WARN_ON(uctx->dx_query_mob->dx_query_ctx != res);
607 if (vmw_query_readback_all(uctx->dx_query_mob))
608 DRM_ERROR("Failed to read back query states\n");
609 }
610
611 submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0);
612
613 cmd = VMW_CMD_RESERVE(dev_priv, submit_size);
614 if (unlikely(cmd == NULL)) {
615 mutex_unlock(&dev_priv->binding_mutex);
616 return -ENOMEM;
617 }
618
619 cmd2 = (void *) cmd;
620 if (readback) {
621 cmd1 = (void *) cmd;
622 cmd1->header.id = SVGA_3D_CMD_DX_READBACK_CONTEXT;
623 cmd1->header.size = sizeof(cmd1->body);
624 cmd1->body.cid = res->id;
625 cmd2 = (void *) (&cmd1[1]);
626 }
627 cmd2->header.id = SVGA_3D_CMD_DX_BIND_CONTEXT;
628 cmd2->header.size = sizeof(cmd2->body);
629 cmd2->body.cid = res->id;
630 cmd2->body.mobid = SVGA3D_INVALID_ID;
631
632 vmw_cmd_commit(dev_priv, submit_size);
633 mutex_unlock(&dev_priv->binding_mutex);
634
635 /*
636 * Create a fence object and fence the backup buffer.
637 */
638
639 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
640 &fence, NULL);
641
642 vmw_bo_fence_single(bo, fence);
643
644 if (likely(fence != NULL))
645 vmw_fence_obj_unreference(&fence);
646
647 return 0;
648}
649
650static int vmw_dx_context_destroy(struct vmw_resource *res)
651{
652 struct vmw_private *dev_priv = res->dev_priv;
653 struct {
654 SVGA3dCmdHeader header;
655 SVGA3dCmdDXDestroyContext body;
656 } *cmd;
657
658 if (likely(res->id == -1))
659 return 0;
660
661 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
662 if (unlikely(cmd == NULL))
663 return -ENOMEM;
664
665 cmd->header.id = SVGA_3D_CMD_DX_DESTROY_CONTEXT;
666 cmd->header.size = sizeof(cmd->body);
667 cmd->body.cid = res->id;
668 vmw_cmd_commit(dev_priv, sizeof(*cmd));
669 if (dev_priv->query_cid == res->id)
670 dev_priv->query_cid_valid = false;
671 vmw_resource_release_id(res);
672 vmw_fifo_resource_dec(dev_priv);
673
674 return 0;
675}
676
677/*
678 * User-space context management:
679 */
680
681static struct vmw_resource *
682vmw_user_context_base_to_res(struct ttm_base_object *base)
683{
684 return &(container_of(base, struct vmw_user_context, base)->res);
685}
686
687static void vmw_user_context_free(struct vmw_resource *res)
688{
689 struct vmw_user_context *ctx =
690 container_of(res, struct vmw_user_context, res);
691
692 if (ctx->cbs)
693 vmw_binding_state_free(ctx->cbs);
694
695 (void) vmw_context_bind_dx_query(res, NULL);
696
697 ttm_base_object_kfree(ctx, base);
698}
699
700/*
701 * This function is called when user space has no more references on the
702 * base object. It releases the base-object's reference on the resource object.
703 */
704
705static void vmw_user_context_base_release(struct ttm_base_object **p_base)
706{
707 struct ttm_base_object *base = *p_base;
708 struct vmw_user_context *ctx =
709 container_of(base, struct vmw_user_context, base);
710 struct vmw_resource *res = &ctx->res;
711
712 *p_base = NULL;
713 vmw_resource_unreference(&res);
714}
715
716int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
717 struct drm_file *file_priv)
718{
719 struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
720 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
721
722 return ttm_ref_object_base_unref(tfile, arg->cid);
723}
724
725static int vmw_context_define(struct drm_device *dev, void *data,
726 struct drm_file *file_priv, bool dx)
727{
728 struct vmw_private *dev_priv = vmw_priv(dev);
729 struct vmw_user_context *ctx;
730 struct vmw_resource *res;
731 struct vmw_resource *tmp;
732 struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
733 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
734 int ret;
735
736 if (!has_sm4_context(dev_priv) && dx) {
737 VMW_DEBUG_USER("DX contexts not supported by device.\n");
738 return -EINVAL;
739 }
740
741 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
742 if (unlikely(!ctx)) {
743 ret = -ENOMEM;
744 goto out_ret;
745 }
746
747 res = &ctx->res;
748 ctx->base.shareable = false;
749 ctx->base.tfile = NULL;
750
751 /*
752 * From here on, the destructor takes over resource freeing.
753 */
754
755 ret = vmw_context_init(dev_priv, res, vmw_user_context_free, dx);
756 if (unlikely(ret != 0))
757 goto out_ret;
758
759 tmp = vmw_resource_reference(&ctx->res);
760 ret = ttm_base_object_init(tfile, &ctx->base, false, VMW_RES_CONTEXT,
761 &vmw_user_context_base_release);
762
763 if (unlikely(ret != 0)) {
764 vmw_resource_unreference(&tmp);
765 goto out_err;
766 }
767
768 arg->cid = ctx->base.handle;
769out_err:
770 vmw_resource_unreference(&res);
771out_ret:
772 return ret;
773}
774
775int vmw_context_define_ioctl(struct drm_device *dev, void *data,
776 struct drm_file *file_priv)
777{
778 return vmw_context_define(dev, data, file_priv, false);
779}
780
781int vmw_extended_context_define_ioctl(struct drm_device *dev, void *data,
782 struct drm_file *file_priv)
783{
784 union drm_vmw_extended_context_arg *arg = (typeof(arg)) data;
785 struct drm_vmw_context_arg *rep = &arg->rep;
786
787 switch (arg->req) {
788 case drm_vmw_context_legacy:
789 return vmw_context_define(dev, rep, file_priv, false);
790 case drm_vmw_context_dx:
791 return vmw_context_define(dev, rep, file_priv, true);
792 default:
793 break;
794 }
795 return -EINVAL;
796}
797
798/**
799 * vmw_context_binding_list - Return a list of context bindings
800 *
801 * @ctx: The context resource
802 *
803 * Returns the current list of bindings of the given context. Note that
804 * this list becomes stale as soon as the dev_priv::binding_mutex is unlocked.
805 */
806struct list_head *vmw_context_binding_list(struct vmw_resource *ctx)
807{
808 struct vmw_user_context *uctx =
809 container_of(ctx, struct vmw_user_context, res);
810
811 return vmw_binding_state_list(uctx->cbs);
812}
813
814struct vmw_cmdbuf_res_manager *vmw_context_res_man(struct vmw_resource *ctx)
815{
816 return container_of(ctx, struct vmw_user_context, res)->man;
817}
818
819struct vmw_resource *vmw_context_cotable(struct vmw_resource *ctx,
820 SVGACOTableType cotable_type)
821{
822 u32 cotable_max = has_sm5_context(ctx->dev_priv) ?
823 SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
824
825 if (cotable_type >= cotable_max)
826 return ERR_PTR(-EINVAL);
827
828 return container_of(ctx, struct vmw_user_context, res)->
829 cotables[cotable_type];
830}
831
832/**
833 * vmw_context_binding_state -
834 * Return a pointer to a context binding state structure
835 *
836 * @ctx: The context resource
837 *
838 * Returns the current state of bindings of the given context. Note that
839 * this state becomes stale as soon as the dev_priv::binding_mutex is unlocked.
840 */
841struct vmw_ctx_binding_state *
842vmw_context_binding_state(struct vmw_resource *ctx)
843{
844 return container_of(ctx, struct vmw_user_context, res)->cbs;
845}
846
847/**
848 * vmw_context_bind_dx_query -
849 * Sets query MOB for the context. If @mob is NULL, then this function will
850 * remove the association between the MOB and the context. This function
851 * assumes the binding_mutex is held.
852 *
853 * @ctx_res: The context resource
854 * @mob: a reference to the query MOB
855 *
856 * Returns -EINVAL if a MOB has already been set and does not match the one
857 * specified in the parameter. 0 otherwise.
858 */
859int vmw_context_bind_dx_query(struct vmw_resource *ctx_res,
860 struct vmw_bo *mob)
861{
862 struct vmw_user_context *uctx =
863 container_of(ctx_res, struct vmw_user_context, res);
864
865 if (mob == NULL) {
866 if (uctx->dx_query_mob) {
867 uctx->dx_query_mob->dx_query_ctx = NULL;
868 vmw_bo_unreference(&uctx->dx_query_mob);
869 uctx->dx_query_mob = NULL;
870 }
871
872 return 0;
873 }
874
875 /* Can only have one MOB per context for queries */
876 if (uctx->dx_query_mob && uctx->dx_query_mob != mob)
877 return -EINVAL;
878
879 mob->dx_query_ctx = ctx_res;
880
881 if (!uctx->dx_query_mob)
882 uctx->dx_query_mob = vmw_bo_reference(mob);
883
884 return 0;
885}
886
887/**
888 * vmw_context_get_dx_query_mob - Returns non-counted reference to DX query mob
889 *
890 * @ctx_res: The context resource
891 */
892struct vmw_bo *
893vmw_context_get_dx_query_mob(struct vmw_resource *ctx_res)
894{
895 struct vmw_user_context *uctx =
896 container_of(ctx_res, struct vmw_user_context, res);
897
898 return uctx->dx_query_mob;
899}