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 #include <linux/sync_file.h>
28 
29 #include "vmwgfx_drv.h"
30 #include "vmwgfx_reg.h"
31 #include <drm/ttm/ttm_bo_api.h>
32 #include <drm/ttm/ttm_placement.h>
33 #include "vmwgfx_so.h"
34 #include "vmwgfx_binding.h"
35 
36 #define VMW_RES_HT_ORDER 12
37 
38 /*
39  * Helper macro to get dx_ctx_node if available otherwise print an error
40  * message. This is for use in command verifier function where if dx_ctx_node
41  * is not set then command is invalid.
42  */
43 #define VMW_GET_CTX_NODE(__sw_context)                                        \
44 ({                                                                            \
45 	__sw_context->dx_ctx_node ? __sw_context->dx_ctx_node : ({            \
46 		VMW_DEBUG_USER("SM context is not set at %s\n", __func__);    \
47 		__sw_context->dx_ctx_node;                                    \
48 	});                                                                   \
49 })
50 
51 #define VMW_DECLARE_CMD_VAR(__var, __type)                                    \
52 	struct {                                                              \
53 		SVGA3dCmdHeader header;                                       \
54 		__type body;                                                  \
55 	} __var
56 
57 /**
58  * struct vmw_relocation - Buffer object relocation
59  *
60  * @head: List head for the command submission context's relocation list
61  * @vbo: Non ref-counted pointer to buffer object
62  * @mob_loc: Pointer to location for mob id to be modified
63  * @location: Pointer to location for guest pointer to be modified
64  */
65 struct vmw_relocation {
66 	struct list_head head;
67 	struct vmw_buffer_object *vbo;
68 	union {
69 		SVGAMobId *mob_loc;
70 		SVGAGuestPtr *location;
71 	};
72 };
73 
74 /**
75  * enum vmw_resource_relocation_type - Relocation type for resources
76  *
77  * @vmw_res_rel_normal: Traditional relocation. The resource id in the
78  * command stream is replaced with the actual id after validation.
79  * @vmw_res_rel_nop: NOP relocation. The command is unconditionally replaced
80  * with a NOP.
81  * @vmw_res_rel_cond_nop: Conditional NOP relocation. If the resource id after
82  * validation is -1, the command is replaced with a NOP. Otherwise no action.
83  */
84 enum vmw_resource_relocation_type {
85 	vmw_res_rel_normal,
86 	vmw_res_rel_nop,
87 	vmw_res_rel_cond_nop,
88 	vmw_res_rel_max
89 };
90 
91 /**
92  * struct vmw_resource_relocation - Relocation info for resources
93  *
94  * @head: List head for the software context's relocation list.
95  * @res: Non-ref-counted pointer to the resource.
96  * @offset: Offset of single byte entries into the command buffer where the id
97  * that needs fixup is located.
98  * @rel_type: Type of relocation.
99  */
100 struct vmw_resource_relocation {
101 	struct list_head head;
102 	const struct vmw_resource *res;
103 	u32 offset:29;
104 	enum vmw_resource_relocation_type rel_type:3;
105 };
106 
107 /**
108  * struct vmw_ctx_validation_info - Extra validation metadata for contexts
109  *
110  * @head: List head of context list
111  * @ctx: The context resource
112  * @cur: The context's persistent binding state
113  * @staged: The binding state changes of this command buffer
114  */
115 struct vmw_ctx_validation_info {
116 	struct list_head head;
117 	struct vmw_resource *ctx;
118 	struct vmw_ctx_binding_state *cur;
119 	struct vmw_ctx_binding_state *staged;
120 };
121 
122 /**
123  * struct vmw_cmd_entry - Describe a command for the verifier
124  *
125  * @user_allow: Whether allowed from the execbuf ioctl.
126  * @gb_disable: Whether disabled if guest-backed objects are available.
127  * @gb_enable: Whether enabled iff guest-backed objects are available.
128  */
129 struct vmw_cmd_entry {
130 	int (*func) (struct vmw_private *, struct vmw_sw_context *,
131 		     SVGA3dCmdHeader *);
132 	bool user_allow;
133 	bool gb_disable;
134 	bool gb_enable;
135 	const char *cmd_name;
136 };
137 
138 #define VMW_CMD_DEF(_cmd, _func, _user_allow, _gb_disable, _gb_enable)	\
139 	[(_cmd) - SVGA_3D_CMD_BASE] = {(_func), (_user_allow),\
140 				       (_gb_disable), (_gb_enable), #_cmd}
141 
142 static int vmw_resource_context_res_add(struct vmw_private *dev_priv,
143 					struct vmw_sw_context *sw_context,
144 					struct vmw_resource *ctx);
145 static int vmw_translate_mob_ptr(struct vmw_private *dev_priv,
146 				 struct vmw_sw_context *sw_context,
147 				 SVGAMobId *id,
148 				 struct vmw_buffer_object **vmw_bo_p);
149 /**
150  * vmw_ptr_diff - Compute the offset from a to b in bytes
151  *
152  * @a: A starting pointer.
153  * @b: A pointer offset in the same address space.
154  *
155  * Returns: The offset in bytes between the two pointers.
156  */
157 static size_t vmw_ptr_diff(void *a, void *b)
158 {
159 	return (unsigned long) b - (unsigned long) a;
160 }
161 
162 /**
163  * vmw_execbuf_bindings_commit - Commit modified binding state
164  *
165  * @sw_context: The command submission context
166  * @backoff: Whether this is part of the error path and binding state changes
167  * should be ignored
168  */
169 static void vmw_execbuf_bindings_commit(struct vmw_sw_context *sw_context,
170 					bool backoff)
171 {
172 	struct vmw_ctx_validation_info *entry;
173 
174 	list_for_each_entry(entry, &sw_context->ctx_list, head) {
175 		if (!backoff)
176 			vmw_binding_state_commit(entry->cur, entry->staged);
177 
178 		if (entry->staged != sw_context->staged_bindings)
179 			vmw_binding_state_free(entry->staged);
180 		else
181 			sw_context->staged_bindings_inuse = false;
182 	}
183 
184 	/* List entries are freed with the validation context */
185 	INIT_LIST_HEAD(&sw_context->ctx_list);
186 }
187 
188 /**
189  * vmw_bind_dx_query_mob - Bind the DX query MOB if referenced
190  *
191  * @sw_context: The command submission context
192  */
193 static void vmw_bind_dx_query_mob(struct vmw_sw_context *sw_context)
194 {
195 	if (sw_context->dx_query_mob)
196 		vmw_context_bind_dx_query(sw_context->dx_query_ctx,
197 					  sw_context->dx_query_mob);
198 }
199 
200 /**
201  * vmw_cmd_ctx_first_setup - Perform the setup needed when a context is added to
202  * the validate list.
203  *
204  * @dev_priv: Pointer to the device private:
205  * @sw_context: The command submission context
206  * @node: The validation node holding the context resource metadata
207  */
208 static int vmw_cmd_ctx_first_setup(struct vmw_private *dev_priv,
209 				   struct vmw_sw_context *sw_context,
210 				   struct vmw_resource *res,
211 				   struct vmw_ctx_validation_info *node)
212 {
213 	int ret;
214 
215 	ret = vmw_resource_context_res_add(dev_priv, sw_context, res);
216 	if (unlikely(ret != 0))
217 		goto out_err;
218 
219 	if (!sw_context->staged_bindings) {
220 		sw_context->staged_bindings = vmw_binding_state_alloc(dev_priv);
221 		if (IS_ERR(sw_context->staged_bindings)) {
222 			ret = PTR_ERR(sw_context->staged_bindings);
223 			sw_context->staged_bindings = NULL;
224 			goto out_err;
225 		}
226 	}
227 
228 	if (sw_context->staged_bindings_inuse) {
229 		node->staged = vmw_binding_state_alloc(dev_priv);
230 		if (IS_ERR(node->staged)) {
231 			ret = PTR_ERR(node->staged);
232 			node->staged = NULL;
233 			goto out_err;
234 		}
235 	} else {
236 		node->staged = sw_context->staged_bindings;
237 		sw_context->staged_bindings_inuse = true;
238 	}
239 
240 	node->ctx = res;
241 	node->cur = vmw_context_binding_state(res);
242 	list_add_tail(&node->head, &sw_context->ctx_list);
243 
244 	return 0;
245 
246 out_err:
247 	return ret;
248 }
249 
250 /**
251  * vmw_execbuf_res_size - calculate extra size fore the resource validation node
252  *
253  * @dev_priv: Pointer to the device private struct.
254  * @res_type: The resource type.
255  *
256  * Guest-backed contexts and DX contexts require extra size to store execbuf
257  * private information in the validation node. Typically the binding manager
258  * associated data structures.
259  *
260  * Returns: The extra size requirement based on resource type.
261  */
262 static unsigned int vmw_execbuf_res_size(struct vmw_private *dev_priv,
263 					 enum vmw_res_type res_type)
264 {
265 	return (res_type == vmw_res_dx_context ||
266 		(res_type == vmw_res_context && dev_priv->has_mob)) ?
267 		sizeof(struct vmw_ctx_validation_info) : 0;
268 }
269 
270 /**
271  * vmw_execbuf_rcache_update - Update a resource-node cache entry
272  *
273  * @rcache: Pointer to the entry to update.
274  * @res: Pointer to the resource.
275  * @private: Pointer to the execbuf-private space in the resource validation
276  * node.
277  */
278 static void vmw_execbuf_rcache_update(struct vmw_res_cache_entry *rcache,
279 				      struct vmw_resource *res,
280 				      void *private)
281 {
282 	rcache->res = res;
283 	rcache->private = private;
284 	rcache->valid = 1;
285 	rcache->valid_handle = 0;
286 }
287 
288 /**
289  * vmw_execbuf_res_noref_val_add - Add a resource described by an unreferenced
290  * rcu-protected pointer to the validation list.
291  *
292  * @sw_context: Pointer to the software context.
293  * @res: Unreferenced rcu-protected pointer to the resource.
294  * @dirty: Whether to change dirty status.
295  *
296  * Returns: 0 on success. Negative error code on failure. Typical error codes
297  * are %-EINVAL on inconsistency and %-ESRCH if the resource was doomed.
298  */
299 static int vmw_execbuf_res_noref_val_add(struct vmw_sw_context *sw_context,
300 					 struct vmw_resource *res,
301 					 u32 dirty)
302 {
303 	struct vmw_private *dev_priv = res->dev_priv;
304 	int ret;
305 	enum vmw_res_type res_type = vmw_res_type(res);
306 	struct vmw_res_cache_entry *rcache;
307 	struct vmw_ctx_validation_info *ctx_info;
308 	bool first_usage;
309 	unsigned int priv_size;
310 
311 	rcache = &sw_context->res_cache[res_type];
312 	if (likely(rcache->valid && rcache->res == res)) {
313 		if (dirty)
314 			vmw_validation_res_set_dirty(sw_context->ctx,
315 						     rcache->private, dirty);
316 		vmw_user_resource_noref_release();
317 		return 0;
318 	}
319 
320 	priv_size = vmw_execbuf_res_size(dev_priv, res_type);
321 	ret = vmw_validation_add_resource(sw_context->ctx, res, priv_size,
322 					  dirty, (void **)&ctx_info,
323 					  &first_usage);
324 	vmw_user_resource_noref_release();
325 	if (ret)
326 		return ret;
327 
328 	if (priv_size && first_usage) {
329 		ret = vmw_cmd_ctx_first_setup(dev_priv, sw_context, res,
330 					      ctx_info);
331 		if (ret) {
332 			VMW_DEBUG_USER("Failed first usage context setup.\n");
333 			return ret;
334 		}
335 	}
336 
337 	vmw_execbuf_rcache_update(rcache, res, ctx_info);
338 	return 0;
339 }
340 
341 /**
342  * vmw_execbuf_res_noctx_val_add - Add a non-context resource to the resource
343  * validation list if it's not already on it
344  *
345  * @sw_context: Pointer to the software context.
346  * @res: Pointer to the resource.
347  * @dirty: Whether to change dirty status.
348  *
349  * Returns: Zero on success. Negative error code on failure.
350  */
351 static int vmw_execbuf_res_noctx_val_add(struct vmw_sw_context *sw_context,
352 					 struct vmw_resource *res,
353 					 u32 dirty)
354 {
355 	struct vmw_res_cache_entry *rcache;
356 	enum vmw_res_type res_type = vmw_res_type(res);
357 	void *ptr;
358 	int ret;
359 
360 	rcache = &sw_context->res_cache[res_type];
361 	if (likely(rcache->valid && rcache->res == res)) {
362 		if (dirty)
363 			vmw_validation_res_set_dirty(sw_context->ctx,
364 						     rcache->private, dirty);
365 		return 0;
366 	}
367 
368 	ret = vmw_validation_add_resource(sw_context->ctx, res, 0, dirty,
369 					  &ptr, NULL);
370 	if (ret)
371 		return ret;
372 
373 	vmw_execbuf_rcache_update(rcache, res, ptr);
374 
375 	return 0;
376 }
377 
378 /**
379  * vmw_view_res_val_add - Add a view and the surface it's pointing to to the
380  * validation list
381  *
382  * @sw_context: The software context holding the validation list.
383  * @view: Pointer to the view resource.
384  *
385  * Returns 0 if success, negative error code otherwise.
386  */
387 static int vmw_view_res_val_add(struct vmw_sw_context *sw_context,
388 				struct vmw_resource *view)
389 {
390 	int ret;
391 
392 	/*
393 	 * First add the resource the view is pointing to, otherwise it may be
394 	 * swapped out when the view is validated.
395 	 */
396 	ret = vmw_execbuf_res_noctx_val_add(sw_context, vmw_view_srf(view),
397 					    vmw_view_dirtying(view));
398 	if (ret)
399 		return ret;
400 
401 	return vmw_execbuf_res_noctx_val_add(sw_context, view,
402 					     VMW_RES_DIRTY_NONE);
403 }
404 
405 /**
406  * vmw_view_id_val_add - Look up a view and add it and the surface it's pointing
407  * to to the validation list.
408  *
409  * @sw_context: The software context holding the validation list.
410  * @view_type: The view type to look up.
411  * @id: view id of the view.
412  *
413  * The view is represented by a view id and the DX context it's created on, or
414  * scheduled for creation on. If there is no DX context set, the function will
415  * return an -EINVAL error pointer.
416  *
417  * Returns: Unreferenced pointer to the resource on success, negative error
418  * pointer on failure.
419  */
420 static struct vmw_resource *
421 vmw_view_id_val_add(struct vmw_sw_context *sw_context,
422 		    enum vmw_view_type view_type, u32 id)
423 {
424 	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
425 	struct vmw_resource *view;
426 	int ret;
427 
428 	if (!ctx_node)
429 		return ERR_PTR(-EINVAL);
430 
431 	view = vmw_view_lookup(sw_context->man, view_type, id);
432 	if (IS_ERR(view))
433 		return view;
434 
435 	ret = vmw_view_res_val_add(sw_context, view);
436 	if (ret)
437 		return ERR_PTR(ret);
438 
439 	return view;
440 }
441 
442 /**
443  * vmw_resource_context_res_add - Put resources previously bound to a context on
444  * the validation list
445  *
446  * @dev_priv: Pointer to a device private structure
447  * @sw_context: Pointer to a software context used for this command submission
448  * @ctx: Pointer to the context resource
449  *
450  * This function puts all resources that were previously bound to @ctx on the
451  * resource validation list. This is part of the context state reemission
452  */
453 static int vmw_resource_context_res_add(struct vmw_private *dev_priv,
454 					struct vmw_sw_context *sw_context,
455 					struct vmw_resource *ctx)
456 {
457 	struct list_head *binding_list;
458 	struct vmw_ctx_bindinfo *entry;
459 	int ret = 0;
460 	struct vmw_resource *res;
461 	u32 i;
462 	u32 cotable_max = has_sm5_context(ctx->dev_priv) ?
463 		SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
464 
465 	/* Add all cotables to the validation list. */
466 	if (has_sm4_context(dev_priv) &&
467 	    vmw_res_type(ctx) == vmw_res_dx_context) {
468 		for (i = 0; i < cotable_max; ++i) {
469 			res = vmw_context_cotable(ctx, i);
470 			if (IS_ERR(res))
471 				continue;
472 
473 			ret = vmw_execbuf_res_noctx_val_add(sw_context, res,
474 							    VMW_RES_DIRTY_SET);
475 			if (unlikely(ret != 0))
476 				return ret;
477 		}
478 	}
479 
480 	/* Add all resources bound to the context to the validation list */
481 	mutex_lock(&dev_priv->binding_mutex);
482 	binding_list = vmw_context_binding_list(ctx);
483 
484 	list_for_each_entry(entry, binding_list, ctx_list) {
485 		if (vmw_res_type(entry->res) == vmw_res_view)
486 			ret = vmw_view_res_val_add(sw_context, entry->res);
487 		else
488 			ret = vmw_execbuf_res_noctx_val_add
489 				(sw_context, entry->res,
490 				 vmw_binding_dirtying(entry->bt));
491 		if (unlikely(ret != 0))
492 			break;
493 	}
494 
495 	if (has_sm4_context(dev_priv) &&
496 	    vmw_res_type(ctx) == vmw_res_dx_context) {
497 		struct vmw_buffer_object *dx_query_mob;
498 
499 		dx_query_mob = vmw_context_get_dx_query_mob(ctx);
500 		if (dx_query_mob)
501 			ret = vmw_validation_add_bo(sw_context->ctx,
502 						    dx_query_mob, true, false);
503 	}
504 
505 	mutex_unlock(&dev_priv->binding_mutex);
506 	return ret;
507 }
508 
509 /**
510  * vmw_resource_relocation_add - Add a relocation to the relocation list
511  *
512  * @list: Pointer to head of relocation list.
513  * @res: The resource.
514  * @offset: Offset into the command buffer currently being parsed where the id
515  * that needs fixup is located. Granularity is one byte.
516  * @rel_type: Relocation type.
517  */
518 static int vmw_resource_relocation_add(struct vmw_sw_context *sw_context,
519 				       const struct vmw_resource *res,
520 				       unsigned long offset,
521 				       enum vmw_resource_relocation_type
522 				       rel_type)
523 {
524 	struct vmw_resource_relocation *rel;
525 
526 	rel = vmw_validation_mem_alloc(sw_context->ctx, sizeof(*rel));
527 	if (unlikely(!rel)) {
528 		VMW_DEBUG_USER("Failed to allocate a resource relocation.\n");
529 		return -ENOMEM;
530 	}
531 
532 	rel->res = res;
533 	rel->offset = offset;
534 	rel->rel_type = rel_type;
535 	list_add_tail(&rel->head, &sw_context->res_relocations);
536 
537 	return 0;
538 }
539 
540 /**
541  * vmw_resource_relocations_free - Free all relocations on a list
542  *
543  * @list: Pointer to the head of the relocation list
544  */
545 static void vmw_resource_relocations_free(struct list_head *list)
546 {
547 	/* Memory is validation context memory, so no need to free it */
548 	INIT_LIST_HEAD(list);
549 }
550 
551 /**
552  * vmw_resource_relocations_apply - Apply all relocations on a list
553  *
554  * @cb: Pointer to the start of the command buffer bein patch. This need not be
555  * the same buffer as the one being parsed when the relocation list was built,
556  * but the contents must be the same modulo the resource ids.
557  * @list: Pointer to the head of the relocation list.
558  */
559 static void vmw_resource_relocations_apply(uint32_t *cb,
560 					   struct list_head *list)
561 {
562 	struct vmw_resource_relocation *rel;
563 
564 	/* Validate the struct vmw_resource_relocation member size */
565 	BUILD_BUG_ON(SVGA_CB_MAX_SIZE >= (1 << 29));
566 	BUILD_BUG_ON(vmw_res_rel_max >= (1 << 3));
567 
568 	list_for_each_entry(rel, list, head) {
569 		u32 *addr = (u32 *)((unsigned long) cb + rel->offset);
570 		switch (rel->rel_type) {
571 		case vmw_res_rel_normal:
572 			*addr = rel->res->id;
573 			break;
574 		case vmw_res_rel_nop:
575 			*addr = SVGA_3D_CMD_NOP;
576 			break;
577 		default:
578 			if (rel->res->id == -1)
579 				*addr = SVGA_3D_CMD_NOP;
580 			break;
581 		}
582 	}
583 }
584 
585 static int vmw_cmd_invalid(struct vmw_private *dev_priv,
586 			   struct vmw_sw_context *sw_context,
587 			   SVGA3dCmdHeader *header)
588 {
589 	return -EINVAL;
590 }
591 
592 static int vmw_cmd_ok(struct vmw_private *dev_priv,
593 		      struct vmw_sw_context *sw_context,
594 		      SVGA3dCmdHeader *header)
595 {
596 	return 0;
597 }
598 
599 /**
600  * vmw_resources_reserve - Reserve all resources on the sw_context's resource
601  * list.
602  *
603  * @sw_context: Pointer to the software context.
604  *
605  * Note that since vmware's command submission currently is protected by the
606  * cmdbuf mutex, no fancy deadlock avoidance is required for resources, since
607  * only a single thread at once will attempt this.
608  */
609 static int vmw_resources_reserve(struct vmw_sw_context *sw_context)
610 {
611 	int ret;
612 
613 	ret = vmw_validation_res_reserve(sw_context->ctx, true);
614 	if (ret)
615 		return ret;
616 
617 	if (sw_context->dx_query_mob) {
618 		struct vmw_buffer_object *expected_dx_query_mob;
619 
620 		expected_dx_query_mob =
621 			vmw_context_get_dx_query_mob(sw_context->dx_query_ctx);
622 		if (expected_dx_query_mob &&
623 		    expected_dx_query_mob != sw_context->dx_query_mob) {
624 			ret = -EINVAL;
625 		}
626 	}
627 
628 	return ret;
629 }
630 
631 /**
632  * vmw_cmd_res_check - Check that a resource is present and if so, put it on the
633  * resource validate list unless it's already there.
634  *
635  * @dev_priv: Pointer to a device private structure.
636  * @sw_context: Pointer to the software context.
637  * @res_type: Resource type.
638  * @dirty: Whether to change dirty status.
639  * @converter: User-space visisble type specific information.
640  * @id_loc: Pointer to the location in the command buffer currently being parsed
641  * from where the user-space resource id handle is located.
642  * @p_val: Pointer to pointer to resource validalidation node. Populated on
643  * exit.
644  */
645 static int
646 vmw_cmd_res_check(struct vmw_private *dev_priv,
647 		  struct vmw_sw_context *sw_context,
648 		  enum vmw_res_type res_type,
649 		  u32 dirty,
650 		  const struct vmw_user_resource_conv *converter,
651 		  uint32_t *id_loc,
652 		  struct vmw_resource **p_res)
653 {
654 	struct vmw_res_cache_entry *rcache = &sw_context->res_cache[res_type];
655 	struct vmw_resource *res;
656 	int ret;
657 
658 	if (p_res)
659 		*p_res = NULL;
660 
661 	if (*id_loc == SVGA3D_INVALID_ID) {
662 		if (res_type == vmw_res_context) {
663 			VMW_DEBUG_USER("Illegal context invalid id.\n");
664 			return -EINVAL;
665 		}
666 		return 0;
667 	}
668 
669 	if (likely(rcache->valid_handle && *id_loc == rcache->handle)) {
670 		res = rcache->res;
671 		if (dirty)
672 			vmw_validation_res_set_dirty(sw_context->ctx,
673 						     rcache->private, dirty);
674 	} else {
675 		unsigned int size = vmw_execbuf_res_size(dev_priv, res_type);
676 
677 		ret = vmw_validation_preload_res(sw_context->ctx, size);
678 		if (ret)
679 			return ret;
680 
681 		res = vmw_user_resource_noref_lookup_handle
682 			(dev_priv, sw_context->fp->tfile, *id_loc, converter);
683 		if (IS_ERR(res)) {
684 			VMW_DEBUG_USER("Could not find/use resource 0x%08x.\n",
685 				       (unsigned int) *id_loc);
686 			return PTR_ERR(res);
687 		}
688 
689 		ret = vmw_execbuf_res_noref_val_add(sw_context, res, dirty);
690 		if (unlikely(ret != 0))
691 			return ret;
692 
693 		if (rcache->valid && rcache->res == res) {
694 			rcache->valid_handle = true;
695 			rcache->handle = *id_loc;
696 		}
697 	}
698 
699 	ret = vmw_resource_relocation_add(sw_context, res,
700 					  vmw_ptr_diff(sw_context->buf_start,
701 						       id_loc),
702 					  vmw_res_rel_normal);
703 	if (p_res)
704 		*p_res = res;
705 
706 	return 0;
707 }
708 
709 /**
710  * vmw_rebind_dx_query - Rebind DX query associated with the context
711  *
712  * @ctx_res: context the query belongs to
713  *
714  * This function assumes binding_mutex is held.
715  */
716 static int vmw_rebind_all_dx_query(struct vmw_resource *ctx_res)
717 {
718 	struct vmw_private *dev_priv = ctx_res->dev_priv;
719 	struct vmw_buffer_object *dx_query_mob;
720 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXBindAllQuery);
721 
722 	dx_query_mob = vmw_context_get_dx_query_mob(ctx_res);
723 
724 	if (!dx_query_mob || dx_query_mob->dx_query_ctx)
725 		return 0;
726 
727 	cmd = VMW_FIFO_RESERVE_DX(dev_priv, sizeof(*cmd), ctx_res->id);
728 	if (cmd == NULL)
729 		return -ENOMEM;
730 
731 	cmd->header.id = SVGA_3D_CMD_DX_BIND_ALL_QUERY;
732 	cmd->header.size = sizeof(cmd->body);
733 	cmd->body.cid = ctx_res->id;
734 	cmd->body.mobid = dx_query_mob->base.mem.start;
735 	vmw_fifo_commit(dev_priv, sizeof(*cmd));
736 
737 	vmw_context_bind_dx_query(ctx_res, dx_query_mob);
738 
739 	return 0;
740 }
741 
742 /**
743  * vmw_rebind_contexts - Rebind all resources previously bound to referenced
744  * contexts.
745  *
746  * @sw_context: Pointer to the software context.
747  *
748  * Rebind context binding points that have been scrubbed because of eviction.
749  */
750 static int vmw_rebind_contexts(struct vmw_sw_context *sw_context)
751 {
752 	struct vmw_ctx_validation_info *val;
753 	int ret;
754 
755 	list_for_each_entry(val, &sw_context->ctx_list, head) {
756 		ret = vmw_binding_rebind_all(val->cur);
757 		if (unlikely(ret != 0)) {
758 			if (ret != -ERESTARTSYS)
759 				VMW_DEBUG_USER("Failed to rebind context.\n");
760 			return ret;
761 		}
762 
763 		ret = vmw_rebind_all_dx_query(val->ctx);
764 		if (ret != 0) {
765 			VMW_DEBUG_USER("Failed to rebind queries.\n");
766 			return ret;
767 		}
768 	}
769 
770 	return 0;
771 }
772 
773 /**
774  * vmw_view_bindings_add - Add an array of view bindings to a context binding
775  * state tracker.
776  *
777  * @sw_context: The execbuf state used for this command.
778  * @view_type: View type for the bindings.
779  * @binding_type: Binding type for the bindings.
780  * @shader_slot: The shader slot to user for the bindings.
781  * @view_ids: Array of view ids to be bound.
782  * @num_views: Number of view ids in @view_ids.
783  * @first_slot: The binding slot to be used for the first view id in @view_ids.
784  */
785 static int vmw_view_bindings_add(struct vmw_sw_context *sw_context,
786 				 enum vmw_view_type view_type,
787 				 enum vmw_ctx_binding_type binding_type,
788 				 uint32 shader_slot,
789 				 uint32 view_ids[], u32 num_views,
790 				 u32 first_slot)
791 {
792 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
793 	u32 i;
794 
795 	if (!ctx_node)
796 		return -EINVAL;
797 
798 	for (i = 0; i < num_views; ++i) {
799 		struct vmw_ctx_bindinfo_view binding;
800 		struct vmw_resource *view = NULL;
801 
802 		if (view_ids[i] != SVGA3D_INVALID_ID) {
803 			view = vmw_view_id_val_add(sw_context, view_type,
804 						   view_ids[i]);
805 			if (IS_ERR(view)) {
806 				VMW_DEBUG_USER("View not found.\n");
807 				return PTR_ERR(view);
808 			}
809 		}
810 		binding.bi.ctx = ctx_node->ctx;
811 		binding.bi.res = view;
812 		binding.bi.bt = binding_type;
813 		binding.shader_slot = shader_slot;
814 		binding.slot = first_slot + i;
815 		vmw_binding_add(ctx_node->staged, &binding.bi,
816 				shader_slot, binding.slot);
817 	}
818 
819 	return 0;
820 }
821 
822 /**
823  * vmw_cmd_cid_check - Check a command header for valid context information.
824  *
825  * @dev_priv: Pointer to a device private structure.
826  * @sw_context: Pointer to the software context.
827  * @header: A command header with an embedded user-space context handle.
828  *
829  * Convenience function: Call vmw_cmd_res_check with the user-space context
830  * handle embedded in @header.
831  */
832 static int vmw_cmd_cid_check(struct vmw_private *dev_priv,
833 			     struct vmw_sw_context *sw_context,
834 			     SVGA3dCmdHeader *header)
835 {
836 	VMW_DECLARE_CMD_VAR(*cmd, uint32_t) =
837 		container_of(header, typeof(*cmd), header);
838 
839 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
840 				 VMW_RES_DIRTY_SET, user_context_converter,
841 				 &cmd->body, NULL);
842 }
843 
844 /**
845  * vmw_execbuf_info_from_res - Get the private validation metadata for a
846  * recently validated resource
847  *
848  * @sw_context: Pointer to the command submission context
849  * @res: The resource
850  *
851  * The resource pointed to by @res needs to be present in the command submission
852  * context's resource cache and hence the last resource of that type to be
853  * processed by the validation code.
854  *
855  * Return: a pointer to the private metadata of the resource, or NULL if it
856  * wasn't found
857  */
858 static struct vmw_ctx_validation_info *
859 vmw_execbuf_info_from_res(struct vmw_sw_context *sw_context,
860 			  struct vmw_resource *res)
861 {
862 	struct vmw_res_cache_entry *rcache =
863 		&sw_context->res_cache[vmw_res_type(res)];
864 
865 	if (rcache->valid && rcache->res == res)
866 		return rcache->private;
867 
868 	WARN_ON_ONCE(true);
869 	return NULL;
870 }
871 
872 static int vmw_cmd_set_render_target_check(struct vmw_private *dev_priv,
873 					   struct vmw_sw_context *sw_context,
874 					   SVGA3dCmdHeader *header)
875 {
876 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdSetRenderTarget);
877 	struct vmw_resource *ctx;
878 	struct vmw_resource *res;
879 	int ret;
880 
881 	cmd = container_of(header, typeof(*cmd), header);
882 
883 	if (cmd->body.type >= SVGA3D_RT_MAX) {
884 		VMW_DEBUG_USER("Illegal render target type %u.\n",
885 			       (unsigned int) cmd->body.type);
886 		return -EINVAL;
887 	}
888 
889 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
890 				VMW_RES_DIRTY_SET, user_context_converter,
891 				&cmd->body.cid, &ctx);
892 	if (unlikely(ret != 0))
893 		return ret;
894 
895 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
896 				VMW_RES_DIRTY_SET, user_surface_converter,
897 				&cmd->body.target.sid, &res);
898 	if (unlikely(ret))
899 		return ret;
900 
901 	if (dev_priv->has_mob) {
902 		struct vmw_ctx_bindinfo_view binding;
903 		struct vmw_ctx_validation_info *node;
904 
905 		node = vmw_execbuf_info_from_res(sw_context, ctx);
906 		if (!node)
907 			return -EINVAL;
908 
909 		binding.bi.ctx = ctx;
910 		binding.bi.res = res;
911 		binding.bi.bt = vmw_ctx_binding_rt;
912 		binding.slot = cmd->body.type;
913 		vmw_binding_add(node->staged, &binding.bi, 0, binding.slot);
914 	}
915 
916 	return 0;
917 }
918 
919 static int vmw_cmd_surface_copy_check(struct vmw_private *dev_priv,
920 				      struct vmw_sw_context *sw_context,
921 				      SVGA3dCmdHeader *header)
922 {
923 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdSurfaceCopy);
924 	int ret;
925 
926 	cmd = container_of(header, typeof(*cmd), header);
927 
928 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
929 				VMW_RES_DIRTY_NONE, user_surface_converter,
930 				&cmd->body.src.sid, NULL);
931 	if (ret)
932 		return ret;
933 
934 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
935 				 VMW_RES_DIRTY_SET, user_surface_converter,
936 				 &cmd->body.dest.sid, NULL);
937 }
938 
939 static int vmw_cmd_buffer_copy_check(struct vmw_private *dev_priv,
940 				     struct vmw_sw_context *sw_context,
941 				     SVGA3dCmdHeader *header)
942 {
943 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXBufferCopy);
944 	int ret;
945 
946 	cmd = container_of(header, typeof(*cmd), header);
947 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
948 				VMW_RES_DIRTY_NONE, user_surface_converter,
949 				&cmd->body.src, NULL);
950 	if (ret != 0)
951 		return ret;
952 
953 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
954 				 VMW_RES_DIRTY_SET, user_surface_converter,
955 				 &cmd->body.dest, NULL);
956 }
957 
958 static int vmw_cmd_pred_copy_check(struct vmw_private *dev_priv,
959 				   struct vmw_sw_context *sw_context,
960 				   SVGA3dCmdHeader *header)
961 {
962 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXPredCopyRegion);
963 	int ret;
964 
965 	cmd = container_of(header, typeof(*cmd), header);
966 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
967 				VMW_RES_DIRTY_NONE, user_surface_converter,
968 				&cmd->body.srcSid, NULL);
969 	if (ret != 0)
970 		return ret;
971 
972 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
973 				 VMW_RES_DIRTY_SET, user_surface_converter,
974 				 &cmd->body.dstSid, NULL);
975 }
976 
977 static int vmw_cmd_stretch_blt_check(struct vmw_private *dev_priv,
978 				     struct vmw_sw_context *sw_context,
979 				     SVGA3dCmdHeader *header)
980 {
981 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdSurfaceStretchBlt);
982 	int ret;
983 
984 	cmd = container_of(header, typeof(*cmd), header);
985 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
986 				VMW_RES_DIRTY_NONE, user_surface_converter,
987 				&cmd->body.src.sid, NULL);
988 	if (unlikely(ret != 0))
989 		return ret;
990 
991 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
992 				 VMW_RES_DIRTY_SET, user_surface_converter,
993 				 &cmd->body.dest.sid, NULL);
994 }
995 
996 static int vmw_cmd_blt_surf_screen_check(struct vmw_private *dev_priv,
997 					 struct vmw_sw_context *sw_context,
998 					 SVGA3dCmdHeader *header)
999 {
1000 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdBlitSurfaceToScreen) =
1001 		container_of(header, typeof(*cmd), header);
1002 
1003 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1004 				 VMW_RES_DIRTY_NONE, user_surface_converter,
1005 				 &cmd->body.srcImage.sid, NULL);
1006 }
1007 
1008 static int vmw_cmd_present_check(struct vmw_private *dev_priv,
1009 				 struct vmw_sw_context *sw_context,
1010 				 SVGA3dCmdHeader *header)
1011 {
1012 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdPresent) =
1013 		container_of(header, typeof(*cmd), header);
1014 
1015 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1016 				 VMW_RES_DIRTY_NONE, user_surface_converter,
1017 				 &cmd->body.sid, NULL);
1018 }
1019 
1020 /**
1021  * vmw_query_bo_switch_prepare - Prepare to switch pinned buffer for queries.
1022  *
1023  * @dev_priv: The device private structure.
1024  * @new_query_bo: The new buffer holding query results.
1025  * @sw_context: The software context used for this command submission.
1026  *
1027  * This function checks whether @new_query_bo is suitable for holding query
1028  * results, and if another buffer currently is pinned for query results. If so,
1029  * the function prepares the state of @sw_context for switching pinned buffers
1030  * after successful submission of the current command batch.
1031  */
1032 static int vmw_query_bo_switch_prepare(struct vmw_private *dev_priv,
1033 				       struct vmw_buffer_object *new_query_bo,
1034 				       struct vmw_sw_context *sw_context)
1035 {
1036 	struct vmw_res_cache_entry *ctx_entry =
1037 		&sw_context->res_cache[vmw_res_context];
1038 	int ret;
1039 
1040 	BUG_ON(!ctx_entry->valid);
1041 	sw_context->last_query_ctx = ctx_entry->res;
1042 
1043 	if (unlikely(new_query_bo != sw_context->cur_query_bo)) {
1044 
1045 		if (unlikely(new_query_bo->base.num_pages > 4)) {
1046 			VMW_DEBUG_USER("Query buffer too large.\n");
1047 			return -EINVAL;
1048 		}
1049 
1050 		if (unlikely(sw_context->cur_query_bo != NULL)) {
1051 			sw_context->needs_post_query_barrier = true;
1052 			ret = vmw_validation_add_bo(sw_context->ctx,
1053 						    sw_context->cur_query_bo,
1054 						    dev_priv->has_mob, false);
1055 			if (unlikely(ret != 0))
1056 				return ret;
1057 		}
1058 		sw_context->cur_query_bo = new_query_bo;
1059 
1060 		ret = vmw_validation_add_bo(sw_context->ctx,
1061 					    dev_priv->dummy_query_bo,
1062 					    dev_priv->has_mob, false);
1063 		if (unlikely(ret != 0))
1064 			return ret;
1065 	}
1066 
1067 	return 0;
1068 }
1069 
1070 /**
1071  * vmw_query_bo_switch_commit - Finalize switching pinned query buffer
1072  *
1073  * @dev_priv: The device private structure.
1074  * @sw_context: The software context used for this command submission batch.
1075  *
1076  * This function will check if we're switching query buffers, and will then,
1077  * issue a dummy occlusion query wait used as a query barrier. When the fence
1078  * object following that query wait has signaled, we are sure that all preceding
1079  * queries have finished, and the old query buffer can be unpinned. However,
1080  * since both the new query buffer and the old one are fenced with that fence,
1081  * we can do an asynchronus unpin now, and be sure that the old query buffer
1082  * won't be moved until the fence has signaled.
1083  *
1084  * As mentioned above, both the new - and old query buffers need to be fenced
1085  * using a sequence emitted *after* calling this function.
1086  */
1087 static void vmw_query_bo_switch_commit(struct vmw_private *dev_priv,
1088 				     struct vmw_sw_context *sw_context)
1089 {
1090 	/*
1091 	 * The validate list should still hold references to all
1092 	 * contexts here.
1093 	 */
1094 	if (sw_context->needs_post_query_barrier) {
1095 		struct vmw_res_cache_entry *ctx_entry =
1096 			&sw_context->res_cache[vmw_res_context];
1097 		struct vmw_resource *ctx;
1098 		int ret;
1099 
1100 		BUG_ON(!ctx_entry->valid);
1101 		ctx = ctx_entry->res;
1102 
1103 		ret = vmw_fifo_emit_dummy_query(dev_priv, ctx->id);
1104 
1105 		if (unlikely(ret != 0))
1106 			VMW_DEBUG_USER("Out of fifo space for dummy query.\n");
1107 	}
1108 
1109 	if (dev_priv->pinned_bo != sw_context->cur_query_bo) {
1110 		if (dev_priv->pinned_bo) {
1111 			vmw_bo_pin_reserved(dev_priv->pinned_bo, false);
1112 			vmw_bo_unreference(&dev_priv->pinned_bo);
1113 		}
1114 
1115 		if (!sw_context->needs_post_query_barrier) {
1116 			vmw_bo_pin_reserved(sw_context->cur_query_bo, true);
1117 
1118 			/*
1119 			 * We pin also the dummy_query_bo buffer so that we
1120 			 * don't need to validate it when emitting dummy queries
1121 			 * in context destroy paths.
1122 			 */
1123 			if (!dev_priv->dummy_query_bo_pinned) {
1124 				vmw_bo_pin_reserved(dev_priv->dummy_query_bo,
1125 						    true);
1126 				dev_priv->dummy_query_bo_pinned = true;
1127 			}
1128 
1129 			BUG_ON(sw_context->last_query_ctx == NULL);
1130 			dev_priv->query_cid = sw_context->last_query_ctx->id;
1131 			dev_priv->query_cid_valid = true;
1132 			dev_priv->pinned_bo =
1133 				vmw_bo_reference(sw_context->cur_query_bo);
1134 		}
1135 	}
1136 }
1137 
1138 /**
1139  * vmw_translate_mob_pointer - Prepare to translate a user-space buffer handle
1140  * to a MOB id.
1141  *
1142  * @dev_priv: Pointer to a device private structure.
1143  * @sw_context: The software context used for this command batch validation.
1144  * @id: Pointer to the user-space handle to be translated.
1145  * @vmw_bo_p: Points to a location that, on successful return will carry a
1146  * non-reference-counted pointer to the buffer object identified by the
1147  * user-space handle in @id.
1148  *
1149  * This function saves information needed to translate a user-space buffer
1150  * handle to a MOB id. The translation does not take place immediately, but
1151  * during a call to vmw_apply_relocations().
1152  *
1153  * This function builds a relocation list and a list of buffers to validate. The
1154  * former needs to be freed using either vmw_apply_relocations() or
1155  * vmw_free_relocations(). The latter needs to be freed using
1156  * vmw_clear_validations.
1157  */
1158 static int vmw_translate_mob_ptr(struct vmw_private *dev_priv,
1159 				 struct vmw_sw_context *sw_context,
1160 				 SVGAMobId *id,
1161 				 struct vmw_buffer_object **vmw_bo_p)
1162 {
1163 	struct vmw_buffer_object *vmw_bo;
1164 	uint32_t handle = *id;
1165 	struct vmw_relocation *reloc;
1166 	int ret;
1167 
1168 	vmw_validation_preload_bo(sw_context->ctx);
1169 	vmw_bo = vmw_user_bo_noref_lookup(sw_context->fp->tfile, handle);
1170 	if (IS_ERR(vmw_bo)) {
1171 		VMW_DEBUG_USER("Could not find or use MOB buffer.\n");
1172 		return PTR_ERR(vmw_bo);
1173 	}
1174 
1175 	ret = vmw_validation_add_bo(sw_context->ctx, vmw_bo, true, false);
1176 	vmw_user_bo_noref_release();
1177 	if (unlikely(ret != 0))
1178 		return ret;
1179 
1180 	reloc = vmw_validation_mem_alloc(sw_context->ctx, sizeof(*reloc));
1181 	if (!reloc)
1182 		return -ENOMEM;
1183 
1184 	reloc->mob_loc = id;
1185 	reloc->vbo = vmw_bo;
1186 
1187 	*vmw_bo_p = vmw_bo;
1188 	list_add_tail(&reloc->head, &sw_context->bo_relocations);
1189 
1190 	return 0;
1191 }
1192 
1193 /**
1194  * vmw_translate_guest_pointer - Prepare to translate a user-space buffer handle
1195  * to a valid SVGAGuestPtr
1196  *
1197  * @dev_priv: Pointer to a device private structure.
1198  * @sw_context: The software context used for this command batch validation.
1199  * @ptr: Pointer to the user-space handle to be translated.
1200  * @vmw_bo_p: Points to a location that, on successful return will carry a
1201  * non-reference-counted pointer to the DMA buffer identified by the user-space
1202  * handle in @id.
1203  *
1204  * This function saves information needed to translate a user-space buffer
1205  * handle to a valid SVGAGuestPtr. The translation does not take place
1206  * immediately, but during a call to vmw_apply_relocations().
1207  *
1208  * This function builds a relocation list and a list of buffers to validate.
1209  * The former needs to be freed using either vmw_apply_relocations() or
1210  * vmw_free_relocations(). The latter needs to be freed using
1211  * vmw_clear_validations.
1212  */
1213 static int vmw_translate_guest_ptr(struct vmw_private *dev_priv,
1214 				   struct vmw_sw_context *sw_context,
1215 				   SVGAGuestPtr *ptr,
1216 				   struct vmw_buffer_object **vmw_bo_p)
1217 {
1218 	struct vmw_buffer_object *vmw_bo;
1219 	uint32_t handle = ptr->gmrId;
1220 	struct vmw_relocation *reloc;
1221 	int ret;
1222 
1223 	vmw_validation_preload_bo(sw_context->ctx);
1224 	vmw_bo = vmw_user_bo_noref_lookup(sw_context->fp->tfile, handle);
1225 	if (IS_ERR(vmw_bo)) {
1226 		VMW_DEBUG_USER("Could not find or use GMR region.\n");
1227 		return PTR_ERR(vmw_bo);
1228 	}
1229 
1230 	ret = vmw_validation_add_bo(sw_context->ctx, vmw_bo, false, false);
1231 	vmw_user_bo_noref_release();
1232 	if (unlikely(ret != 0))
1233 		return ret;
1234 
1235 	reloc = vmw_validation_mem_alloc(sw_context->ctx, sizeof(*reloc));
1236 	if (!reloc)
1237 		return -ENOMEM;
1238 
1239 	reloc->location = ptr;
1240 	reloc->vbo = vmw_bo;
1241 	*vmw_bo_p = vmw_bo;
1242 	list_add_tail(&reloc->head, &sw_context->bo_relocations);
1243 
1244 	return 0;
1245 }
1246 
1247 /**
1248  * vmw_cmd_dx_define_query - validate SVGA_3D_CMD_DX_DEFINE_QUERY command.
1249  *
1250  * @dev_priv: Pointer to a device private struct.
1251  * @sw_context: The software context used for this command submission.
1252  * @header: Pointer to the command header in the command stream.
1253  *
1254  * This function adds the new query into the query COTABLE
1255  */
1256 static int vmw_cmd_dx_define_query(struct vmw_private *dev_priv,
1257 				   struct vmw_sw_context *sw_context,
1258 				   SVGA3dCmdHeader *header)
1259 {
1260 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXDefineQuery);
1261 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
1262 	struct vmw_resource *cotable_res;
1263 	int ret;
1264 
1265 	if (!ctx_node)
1266 		return -EINVAL;
1267 
1268 	cmd = container_of(header, typeof(*cmd), header);
1269 
1270 	if (cmd->body.type <  SVGA3D_QUERYTYPE_MIN ||
1271 	    cmd->body.type >= SVGA3D_QUERYTYPE_MAX)
1272 		return -EINVAL;
1273 
1274 	cotable_res = vmw_context_cotable(ctx_node->ctx, SVGA_COTABLE_DXQUERY);
1275 	ret = vmw_cotable_notify(cotable_res, cmd->body.queryId);
1276 
1277 	return ret;
1278 }
1279 
1280 /**
1281  * vmw_cmd_dx_bind_query - validate SVGA_3D_CMD_DX_BIND_QUERY command.
1282  *
1283  * @dev_priv: Pointer to a device private struct.
1284  * @sw_context: The software context used for this command submission.
1285  * @header: Pointer to the command header in the command stream.
1286  *
1287  * The query bind operation will eventually associate the query ID with its
1288  * backing MOB.  In this function, we take the user mode MOB ID and use
1289  * vmw_translate_mob_ptr() to translate it to its kernel mode equivalent.
1290  */
1291 static int vmw_cmd_dx_bind_query(struct vmw_private *dev_priv,
1292 				 struct vmw_sw_context *sw_context,
1293 				 SVGA3dCmdHeader *header)
1294 {
1295 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXBindQuery);
1296 	struct vmw_buffer_object *vmw_bo;
1297 	int ret;
1298 
1299 	cmd = container_of(header, typeof(*cmd), header);
1300 
1301 	/*
1302 	 * Look up the buffer pointed to by q.mobid, put it on the relocation
1303 	 * list so its kernel mode MOB ID can be filled in later
1304 	 */
1305 	ret = vmw_translate_mob_ptr(dev_priv, sw_context, &cmd->body.mobid,
1306 				    &vmw_bo);
1307 
1308 	if (ret != 0)
1309 		return ret;
1310 
1311 	sw_context->dx_query_mob = vmw_bo;
1312 	sw_context->dx_query_ctx = sw_context->dx_ctx_node->ctx;
1313 	return 0;
1314 }
1315 
1316 /**
1317  * vmw_cmd_begin_gb_query - validate SVGA_3D_CMD_BEGIN_GB_QUERY command.
1318  *
1319  * @dev_priv: Pointer to a device private struct.
1320  * @sw_context: The software context used for this command submission.
1321  * @header: Pointer to the command header in the command stream.
1322  */
1323 static int vmw_cmd_begin_gb_query(struct vmw_private *dev_priv,
1324 				  struct vmw_sw_context *sw_context,
1325 				  SVGA3dCmdHeader *header)
1326 {
1327 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdBeginGBQuery) =
1328 		container_of(header, typeof(*cmd), header);
1329 
1330 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
1331 				 VMW_RES_DIRTY_SET, user_context_converter,
1332 				 &cmd->body.cid, NULL);
1333 }
1334 
1335 /**
1336  * vmw_cmd_begin_query - validate SVGA_3D_CMD_BEGIN_QUERY command.
1337  *
1338  * @dev_priv: Pointer to a device private struct.
1339  * @sw_context: The software context used for this command submission.
1340  * @header: Pointer to the command header in the command stream.
1341  */
1342 static int vmw_cmd_begin_query(struct vmw_private *dev_priv,
1343 			       struct vmw_sw_context *sw_context,
1344 			       SVGA3dCmdHeader *header)
1345 {
1346 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdBeginQuery) =
1347 		container_of(header, typeof(*cmd), header);
1348 
1349 	if (unlikely(dev_priv->has_mob)) {
1350 		VMW_DECLARE_CMD_VAR(gb_cmd, SVGA3dCmdBeginGBQuery);
1351 
1352 		BUG_ON(sizeof(gb_cmd) != sizeof(*cmd));
1353 
1354 		gb_cmd.header.id = SVGA_3D_CMD_BEGIN_GB_QUERY;
1355 		gb_cmd.header.size = cmd->header.size;
1356 		gb_cmd.body.cid = cmd->body.cid;
1357 		gb_cmd.body.type = cmd->body.type;
1358 
1359 		memcpy(cmd, &gb_cmd, sizeof(*cmd));
1360 		return vmw_cmd_begin_gb_query(dev_priv, sw_context, header);
1361 	}
1362 
1363 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
1364 				 VMW_RES_DIRTY_SET, user_context_converter,
1365 				 &cmd->body.cid, NULL);
1366 }
1367 
1368 /**
1369  * vmw_cmd_end_gb_query - validate SVGA_3D_CMD_END_GB_QUERY command.
1370  *
1371  * @dev_priv: Pointer to a device private struct.
1372  * @sw_context: The software context used for this command submission.
1373  * @header: Pointer to the command header in the command stream.
1374  */
1375 static int vmw_cmd_end_gb_query(struct vmw_private *dev_priv,
1376 				struct vmw_sw_context *sw_context,
1377 				SVGA3dCmdHeader *header)
1378 {
1379 	struct vmw_buffer_object *vmw_bo;
1380 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdEndGBQuery);
1381 	int ret;
1382 
1383 	cmd = container_of(header, typeof(*cmd), header);
1384 	ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
1385 	if (unlikely(ret != 0))
1386 		return ret;
1387 
1388 	ret = vmw_translate_mob_ptr(dev_priv, sw_context, &cmd->body.mobid,
1389 				    &vmw_bo);
1390 	if (unlikely(ret != 0))
1391 		return ret;
1392 
1393 	ret = vmw_query_bo_switch_prepare(dev_priv, vmw_bo, sw_context);
1394 
1395 	return ret;
1396 }
1397 
1398 /**
1399  * vmw_cmd_end_query - validate SVGA_3D_CMD_END_QUERY command.
1400  *
1401  * @dev_priv: Pointer to a device private struct.
1402  * @sw_context: The software context used for this command submission.
1403  * @header: Pointer to the command header in the command stream.
1404  */
1405 static int vmw_cmd_end_query(struct vmw_private *dev_priv,
1406 			     struct vmw_sw_context *sw_context,
1407 			     SVGA3dCmdHeader *header)
1408 {
1409 	struct vmw_buffer_object *vmw_bo;
1410 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdEndQuery);
1411 	int ret;
1412 
1413 	cmd = container_of(header, typeof(*cmd), header);
1414 	if (dev_priv->has_mob) {
1415 		VMW_DECLARE_CMD_VAR(gb_cmd, SVGA3dCmdEndGBQuery);
1416 
1417 		BUG_ON(sizeof(gb_cmd) != sizeof(*cmd));
1418 
1419 		gb_cmd.header.id = SVGA_3D_CMD_END_GB_QUERY;
1420 		gb_cmd.header.size = cmd->header.size;
1421 		gb_cmd.body.cid = cmd->body.cid;
1422 		gb_cmd.body.type = cmd->body.type;
1423 		gb_cmd.body.mobid = cmd->body.guestResult.gmrId;
1424 		gb_cmd.body.offset = cmd->body.guestResult.offset;
1425 
1426 		memcpy(cmd, &gb_cmd, sizeof(*cmd));
1427 		return vmw_cmd_end_gb_query(dev_priv, sw_context, header);
1428 	}
1429 
1430 	ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
1431 	if (unlikely(ret != 0))
1432 		return ret;
1433 
1434 	ret = vmw_translate_guest_ptr(dev_priv, sw_context,
1435 				      &cmd->body.guestResult, &vmw_bo);
1436 	if (unlikely(ret != 0))
1437 		return ret;
1438 
1439 	ret = vmw_query_bo_switch_prepare(dev_priv, vmw_bo, sw_context);
1440 
1441 	return ret;
1442 }
1443 
1444 /**
1445  * vmw_cmd_wait_gb_query - validate SVGA_3D_CMD_WAIT_GB_QUERY command.
1446  *
1447  * @dev_priv: Pointer to a device private struct.
1448  * @sw_context: The software context used for this command submission.
1449  * @header: Pointer to the command header in the command stream.
1450  */
1451 static int vmw_cmd_wait_gb_query(struct vmw_private *dev_priv,
1452 				 struct vmw_sw_context *sw_context,
1453 				 SVGA3dCmdHeader *header)
1454 {
1455 	struct vmw_buffer_object *vmw_bo;
1456 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdWaitForGBQuery);
1457 	int ret;
1458 
1459 	cmd = container_of(header, typeof(*cmd), header);
1460 	ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
1461 	if (unlikely(ret != 0))
1462 		return ret;
1463 
1464 	ret = vmw_translate_mob_ptr(dev_priv, sw_context, &cmd->body.mobid,
1465 				    &vmw_bo);
1466 	if (unlikely(ret != 0))
1467 		return ret;
1468 
1469 	return 0;
1470 }
1471 
1472 /**
1473  * vmw_cmd_wait_query - validate SVGA_3D_CMD_WAIT_QUERY command.
1474  *
1475  * @dev_priv: Pointer to a device private struct.
1476  * @sw_context: The software context used for this command submission.
1477  * @header: Pointer to the command header in the command stream.
1478  */
1479 static int vmw_cmd_wait_query(struct vmw_private *dev_priv,
1480 			      struct vmw_sw_context *sw_context,
1481 			      SVGA3dCmdHeader *header)
1482 {
1483 	struct vmw_buffer_object *vmw_bo;
1484 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdWaitForQuery);
1485 	int ret;
1486 
1487 	cmd = container_of(header, typeof(*cmd), header);
1488 	if (dev_priv->has_mob) {
1489 		VMW_DECLARE_CMD_VAR(gb_cmd, SVGA3dCmdWaitForGBQuery);
1490 
1491 		BUG_ON(sizeof(gb_cmd) != sizeof(*cmd));
1492 
1493 		gb_cmd.header.id = SVGA_3D_CMD_WAIT_FOR_GB_QUERY;
1494 		gb_cmd.header.size = cmd->header.size;
1495 		gb_cmd.body.cid = cmd->body.cid;
1496 		gb_cmd.body.type = cmd->body.type;
1497 		gb_cmd.body.mobid = cmd->body.guestResult.gmrId;
1498 		gb_cmd.body.offset = cmd->body.guestResult.offset;
1499 
1500 		memcpy(cmd, &gb_cmd, sizeof(*cmd));
1501 		return vmw_cmd_wait_gb_query(dev_priv, sw_context, header);
1502 	}
1503 
1504 	ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
1505 	if (unlikely(ret != 0))
1506 		return ret;
1507 
1508 	ret = vmw_translate_guest_ptr(dev_priv, sw_context,
1509 				      &cmd->body.guestResult, &vmw_bo);
1510 	if (unlikely(ret != 0))
1511 		return ret;
1512 
1513 	return 0;
1514 }
1515 
1516 static int vmw_cmd_dma(struct vmw_private *dev_priv,
1517 		       struct vmw_sw_context *sw_context,
1518 		       SVGA3dCmdHeader *header)
1519 {
1520 	struct vmw_buffer_object *vmw_bo = NULL;
1521 	struct vmw_surface *srf = NULL;
1522 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdSurfaceDMA);
1523 	int ret;
1524 	SVGA3dCmdSurfaceDMASuffix *suffix;
1525 	uint32_t bo_size;
1526 	bool dirty;
1527 
1528 	cmd = container_of(header, typeof(*cmd), header);
1529 	suffix = (SVGA3dCmdSurfaceDMASuffix *)((unsigned long) &cmd->body +
1530 					       header->size - sizeof(*suffix));
1531 
1532 	/* Make sure device and verifier stays in sync. */
1533 	if (unlikely(suffix->suffixSize != sizeof(*suffix))) {
1534 		VMW_DEBUG_USER("Invalid DMA suffix size.\n");
1535 		return -EINVAL;
1536 	}
1537 
1538 	ret = vmw_translate_guest_ptr(dev_priv, sw_context,
1539 				      &cmd->body.guest.ptr, &vmw_bo);
1540 	if (unlikely(ret != 0))
1541 		return ret;
1542 
1543 	/* Make sure DMA doesn't cross BO boundaries. */
1544 	bo_size = vmw_bo->base.num_pages * PAGE_SIZE;
1545 	if (unlikely(cmd->body.guest.ptr.offset > bo_size)) {
1546 		VMW_DEBUG_USER("Invalid DMA offset.\n");
1547 		return -EINVAL;
1548 	}
1549 
1550 	bo_size -= cmd->body.guest.ptr.offset;
1551 	if (unlikely(suffix->maximumOffset > bo_size))
1552 		suffix->maximumOffset = bo_size;
1553 
1554 	dirty = (cmd->body.transfer == SVGA3D_WRITE_HOST_VRAM) ?
1555 		VMW_RES_DIRTY_SET : 0;
1556 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1557 				dirty, user_surface_converter,
1558 				&cmd->body.host.sid, NULL);
1559 	if (unlikely(ret != 0)) {
1560 		if (unlikely(ret != -ERESTARTSYS))
1561 			VMW_DEBUG_USER("could not find surface for DMA.\n");
1562 		return ret;
1563 	}
1564 
1565 	srf = vmw_res_to_srf(sw_context->res_cache[vmw_res_surface].res);
1566 
1567 	vmw_kms_cursor_snoop(srf, sw_context->fp->tfile, &vmw_bo->base, header);
1568 
1569 	return 0;
1570 }
1571 
1572 static int vmw_cmd_draw(struct vmw_private *dev_priv,
1573 			struct vmw_sw_context *sw_context,
1574 			SVGA3dCmdHeader *header)
1575 {
1576 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDrawPrimitives);
1577 	SVGA3dVertexDecl *decl = (SVGA3dVertexDecl *)(
1578 		(unsigned long)header + sizeof(*cmd));
1579 	SVGA3dPrimitiveRange *range;
1580 	uint32_t i;
1581 	uint32_t maxnum;
1582 	int ret;
1583 
1584 	ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
1585 	if (unlikely(ret != 0))
1586 		return ret;
1587 
1588 	cmd = container_of(header, typeof(*cmd), header);
1589 	maxnum = (header->size - sizeof(cmd->body)) / sizeof(*decl);
1590 
1591 	if (unlikely(cmd->body.numVertexDecls > maxnum)) {
1592 		VMW_DEBUG_USER("Illegal number of vertex declarations.\n");
1593 		return -EINVAL;
1594 	}
1595 
1596 	for (i = 0; i < cmd->body.numVertexDecls; ++i, ++decl) {
1597 		ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1598 					VMW_RES_DIRTY_NONE,
1599 					user_surface_converter,
1600 					&decl->array.surfaceId, NULL);
1601 		if (unlikely(ret != 0))
1602 			return ret;
1603 	}
1604 
1605 	maxnum = (header->size - sizeof(cmd->body) -
1606 		  cmd->body.numVertexDecls * sizeof(*decl)) / sizeof(*range);
1607 	if (unlikely(cmd->body.numRanges > maxnum)) {
1608 		VMW_DEBUG_USER("Illegal number of index ranges.\n");
1609 		return -EINVAL;
1610 	}
1611 
1612 	range = (SVGA3dPrimitiveRange *) decl;
1613 	for (i = 0; i < cmd->body.numRanges; ++i, ++range) {
1614 		ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1615 					VMW_RES_DIRTY_NONE,
1616 					user_surface_converter,
1617 					&range->indexArray.surfaceId, NULL);
1618 		if (unlikely(ret != 0))
1619 			return ret;
1620 	}
1621 	return 0;
1622 }
1623 
1624 static int vmw_cmd_tex_state(struct vmw_private *dev_priv,
1625 			     struct vmw_sw_context *sw_context,
1626 			     SVGA3dCmdHeader *header)
1627 {
1628 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdSetTextureState);
1629 	SVGA3dTextureState *last_state = (SVGA3dTextureState *)
1630 	  ((unsigned long) header + header->size + sizeof(header));
1631 	SVGA3dTextureState *cur_state = (SVGA3dTextureState *)
1632 		((unsigned long) header + sizeof(*cmd));
1633 	struct vmw_resource *ctx;
1634 	struct vmw_resource *res;
1635 	int ret;
1636 
1637 	cmd = container_of(header, typeof(*cmd), header);
1638 
1639 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
1640 				VMW_RES_DIRTY_SET, user_context_converter,
1641 				&cmd->body.cid, &ctx);
1642 	if (unlikely(ret != 0))
1643 		return ret;
1644 
1645 	for (; cur_state < last_state; ++cur_state) {
1646 		if (likely(cur_state->name != SVGA3D_TS_BIND_TEXTURE))
1647 			continue;
1648 
1649 		if (cur_state->stage >= SVGA3D_NUM_TEXTURE_UNITS) {
1650 			VMW_DEBUG_USER("Illegal texture/sampler unit %u.\n",
1651 				       (unsigned int) cur_state->stage);
1652 			return -EINVAL;
1653 		}
1654 
1655 		ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1656 					VMW_RES_DIRTY_NONE,
1657 					user_surface_converter,
1658 					&cur_state->value, &res);
1659 		if (unlikely(ret != 0))
1660 			return ret;
1661 
1662 		if (dev_priv->has_mob) {
1663 			struct vmw_ctx_bindinfo_tex binding;
1664 			struct vmw_ctx_validation_info *node;
1665 
1666 			node = vmw_execbuf_info_from_res(sw_context, ctx);
1667 			if (!node)
1668 				return -EINVAL;
1669 
1670 			binding.bi.ctx = ctx;
1671 			binding.bi.res = res;
1672 			binding.bi.bt = vmw_ctx_binding_tex;
1673 			binding.texture_stage = cur_state->stage;
1674 			vmw_binding_add(node->staged, &binding.bi, 0,
1675 					binding.texture_stage);
1676 		}
1677 	}
1678 
1679 	return 0;
1680 }
1681 
1682 static int vmw_cmd_check_define_gmrfb(struct vmw_private *dev_priv,
1683 				      struct vmw_sw_context *sw_context,
1684 				      void *buf)
1685 {
1686 	struct vmw_buffer_object *vmw_bo;
1687 
1688 	struct {
1689 		uint32_t header;
1690 		SVGAFifoCmdDefineGMRFB body;
1691 	} *cmd = buf;
1692 
1693 	return vmw_translate_guest_ptr(dev_priv, sw_context, &cmd->body.ptr,
1694 				       &vmw_bo);
1695 }
1696 
1697 /**
1698  * vmw_cmd_res_switch_backup - Utility function to handle backup buffer
1699  * switching
1700  *
1701  * @dev_priv: Pointer to a device private struct.
1702  * @sw_context: The software context being used for this batch.
1703  * @val_node: The validation node representing the resource.
1704  * @buf_id: Pointer to the user-space backup buffer handle in the command
1705  * stream.
1706  * @backup_offset: Offset of backup into MOB.
1707  *
1708  * This function prepares for registering a switch of backup buffers in the
1709  * resource metadata just prior to unreserving. It's basically a wrapper around
1710  * vmw_cmd_res_switch_backup with a different interface.
1711  */
1712 static int vmw_cmd_res_switch_backup(struct vmw_private *dev_priv,
1713 				     struct vmw_sw_context *sw_context,
1714 				     struct vmw_resource *res, uint32_t *buf_id,
1715 				     unsigned long backup_offset)
1716 {
1717 	struct vmw_buffer_object *vbo;
1718 	void *info;
1719 	int ret;
1720 
1721 	info = vmw_execbuf_info_from_res(sw_context, res);
1722 	if (!info)
1723 		return -EINVAL;
1724 
1725 	ret = vmw_translate_mob_ptr(dev_priv, sw_context, buf_id, &vbo);
1726 	if (ret)
1727 		return ret;
1728 
1729 	vmw_validation_res_switch_backup(sw_context->ctx, info, vbo,
1730 					 backup_offset);
1731 	return 0;
1732 }
1733 
1734 /**
1735  * vmw_cmd_switch_backup - Utility function to handle backup buffer switching
1736  *
1737  * @dev_priv: Pointer to a device private struct.
1738  * @sw_context: The software context being used for this batch.
1739  * @res_type: The resource type.
1740  * @converter: Information about user-space binding for this resource type.
1741  * @res_id: Pointer to the user-space resource handle in the command stream.
1742  * @buf_id: Pointer to the user-space backup buffer handle in the command
1743  * stream.
1744  * @backup_offset: Offset of backup into MOB.
1745  *
1746  * This function prepares for registering a switch of backup buffers in the
1747  * resource metadata just prior to unreserving. It's basically a wrapper around
1748  * vmw_cmd_res_switch_backup with a different interface.
1749  */
1750 static int vmw_cmd_switch_backup(struct vmw_private *dev_priv,
1751 				 struct vmw_sw_context *sw_context,
1752 				 enum vmw_res_type res_type,
1753 				 const struct vmw_user_resource_conv
1754 				 *converter, uint32_t *res_id, uint32_t *buf_id,
1755 				 unsigned long backup_offset)
1756 {
1757 	struct vmw_resource *res;
1758 	int ret;
1759 
1760 	ret = vmw_cmd_res_check(dev_priv, sw_context, res_type,
1761 				VMW_RES_DIRTY_NONE, converter, res_id, &res);
1762 	if (ret)
1763 		return ret;
1764 
1765 	return vmw_cmd_res_switch_backup(dev_priv, sw_context, res, buf_id,
1766 					 backup_offset);
1767 }
1768 
1769 /**
1770  * vmw_cmd_bind_gb_surface - Validate SVGA_3D_CMD_BIND_GB_SURFACE command
1771  *
1772  * @dev_priv: Pointer to a device private struct.
1773  * @sw_context: The software context being used for this batch.
1774  * @header: Pointer to the command header in the command stream.
1775  */
1776 static int vmw_cmd_bind_gb_surface(struct vmw_private *dev_priv,
1777 				   struct vmw_sw_context *sw_context,
1778 				   SVGA3dCmdHeader *header)
1779 {
1780 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdBindGBSurface) =
1781 		container_of(header, typeof(*cmd), header);
1782 
1783 	return vmw_cmd_switch_backup(dev_priv, sw_context, vmw_res_surface,
1784 				     user_surface_converter, &cmd->body.sid,
1785 				     &cmd->body.mobid, 0);
1786 }
1787 
1788 /**
1789  * vmw_cmd_update_gb_image - Validate SVGA_3D_CMD_UPDATE_GB_IMAGE command
1790  *
1791  * @dev_priv: Pointer to a device private struct.
1792  * @sw_context: The software context being used for this batch.
1793  * @header: Pointer to the command header in the command stream.
1794  */
1795 static int vmw_cmd_update_gb_image(struct vmw_private *dev_priv,
1796 				   struct vmw_sw_context *sw_context,
1797 				   SVGA3dCmdHeader *header)
1798 {
1799 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdUpdateGBImage) =
1800 		container_of(header, typeof(*cmd), header);
1801 
1802 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1803 				 VMW_RES_DIRTY_NONE, user_surface_converter,
1804 				 &cmd->body.image.sid, NULL);
1805 }
1806 
1807 /**
1808  * vmw_cmd_update_gb_surface - Validate SVGA_3D_CMD_UPDATE_GB_SURFACE command
1809  *
1810  * @dev_priv: Pointer to a device private struct.
1811  * @sw_context: The software context being used for this batch.
1812  * @header: Pointer to the command header in the command stream.
1813  */
1814 static int vmw_cmd_update_gb_surface(struct vmw_private *dev_priv,
1815 				     struct vmw_sw_context *sw_context,
1816 				     SVGA3dCmdHeader *header)
1817 {
1818 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdUpdateGBSurface) =
1819 		container_of(header, typeof(*cmd), header);
1820 
1821 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1822 				 VMW_RES_DIRTY_CLEAR, user_surface_converter,
1823 				 &cmd->body.sid, NULL);
1824 }
1825 
1826 /**
1827  * vmw_cmd_readback_gb_image - Validate SVGA_3D_CMD_READBACK_GB_IMAGE command
1828  *
1829  * @dev_priv: Pointer to a device private struct.
1830  * @sw_context: The software context being used for this batch.
1831  * @header: Pointer to the command header in the command stream.
1832  */
1833 static int vmw_cmd_readback_gb_image(struct vmw_private *dev_priv,
1834 				     struct vmw_sw_context *sw_context,
1835 				     SVGA3dCmdHeader *header)
1836 {
1837 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdReadbackGBImage) =
1838 		container_of(header, typeof(*cmd), header);
1839 
1840 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1841 				 VMW_RES_DIRTY_NONE, user_surface_converter,
1842 				 &cmd->body.image.sid, NULL);
1843 }
1844 
1845 /**
1846  * vmw_cmd_readback_gb_surface - Validate SVGA_3D_CMD_READBACK_GB_SURFACE
1847  * command
1848  *
1849  * @dev_priv: Pointer to a device private struct.
1850  * @sw_context: The software context being used for this batch.
1851  * @header: Pointer to the command header in the command stream.
1852  */
1853 static int vmw_cmd_readback_gb_surface(struct vmw_private *dev_priv,
1854 				       struct vmw_sw_context *sw_context,
1855 				       SVGA3dCmdHeader *header)
1856 {
1857 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdReadbackGBSurface) =
1858 		container_of(header, typeof(*cmd), header);
1859 
1860 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1861 				 VMW_RES_DIRTY_CLEAR, user_surface_converter,
1862 				 &cmd->body.sid, NULL);
1863 }
1864 
1865 /**
1866  * vmw_cmd_invalidate_gb_image - Validate SVGA_3D_CMD_INVALIDATE_GB_IMAGE
1867  * command
1868  *
1869  * @dev_priv: Pointer to a device private struct.
1870  * @sw_context: The software context being used for this batch.
1871  * @header: Pointer to the command header in the command stream.
1872  */
1873 static int vmw_cmd_invalidate_gb_image(struct vmw_private *dev_priv,
1874 				       struct vmw_sw_context *sw_context,
1875 				       SVGA3dCmdHeader *header)
1876 {
1877 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdInvalidateGBImage) =
1878 		container_of(header, typeof(*cmd), header);
1879 
1880 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1881 				 VMW_RES_DIRTY_NONE, user_surface_converter,
1882 				 &cmd->body.image.sid, NULL);
1883 }
1884 
1885 /**
1886  * vmw_cmd_invalidate_gb_surface - Validate SVGA_3D_CMD_INVALIDATE_GB_SURFACE
1887  * command
1888  *
1889  * @dev_priv: Pointer to a device private struct.
1890  * @sw_context: The software context being used for this batch.
1891  * @header: Pointer to the command header in the command stream.
1892  */
1893 static int vmw_cmd_invalidate_gb_surface(struct vmw_private *dev_priv,
1894 					 struct vmw_sw_context *sw_context,
1895 					 SVGA3dCmdHeader *header)
1896 {
1897 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdInvalidateGBSurface) =
1898 		container_of(header, typeof(*cmd), header);
1899 
1900 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1901 				 VMW_RES_DIRTY_CLEAR, user_surface_converter,
1902 				 &cmd->body.sid, NULL);
1903 }
1904 
1905 /**
1906  * vmw_cmd_shader_define - Validate SVGA_3D_CMD_SHADER_DEFINE command
1907  *
1908  * @dev_priv: Pointer to a device private struct.
1909  * @sw_context: The software context being used for this batch.
1910  * @header: Pointer to the command header in the command stream.
1911  */
1912 static int vmw_cmd_shader_define(struct vmw_private *dev_priv,
1913 				 struct vmw_sw_context *sw_context,
1914 				 SVGA3dCmdHeader *header)
1915 {
1916 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDefineShader);
1917 	int ret;
1918 	size_t size;
1919 	struct vmw_resource *ctx;
1920 
1921 	cmd = container_of(header, typeof(*cmd), header);
1922 
1923 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
1924 				VMW_RES_DIRTY_SET, user_context_converter,
1925 				&cmd->body.cid, &ctx);
1926 	if (unlikely(ret != 0))
1927 		return ret;
1928 
1929 	if (unlikely(!dev_priv->has_mob))
1930 		return 0;
1931 
1932 	size = cmd->header.size - sizeof(cmd->body);
1933 	ret = vmw_compat_shader_add(dev_priv, vmw_context_res_man(ctx),
1934 				    cmd->body.shid, cmd + 1, cmd->body.type,
1935 				    size, &sw_context->staged_cmd_res);
1936 	if (unlikely(ret != 0))
1937 		return ret;
1938 
1939 	return vmw_resource_relocation_add(sw_context, NULL,
1940 					   vmw_ptr_diff(sw_context->buf_start,
1941 							&cmd->header.id),
1942 					   vmw_res_rel_nop);
1943 }
1944 
1945 /**
1946  * vmw_cmd_shader_destroy - Validate SVGA_3D_CMD_SHADER_DESTROY command
1947  *
1948  * @dev_priv: Pointer to a device private struct.
1949  * @sw_context: The software context being used for this batch.
1950  * @header: Pointer to the command header in the command stream.
1951  */
1952 static int vmw_cmd_shader_destroy(struct vmw_private *dev_priv,
1953 				  struct vmw_sw_context *sw_context,
1954 				  SVGA3dCmdHeader *header)
1955 {
1956 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDestroyShader);
1957 	int ret;
1958 	struct vmw_resource *ctx;
1959 
1960 	cmd = container_of(header, typeof(*cmd), header);
1961 
1962 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
1963 				VMW_RES_DIRTY_SET, user_context_converter,
1964 				&cmd->body.cid, &ctx);
1965 	if (unlikely(ret != 0))
1966 		return ret;
1967 
1968 	if (unlikely(!dev_priv->has_mob))
1969 		return 0;
1970 
1971 	ret = vmw_shader_remove(vmw_context_res_man(ctx), cmd->body.shid,
1972 				cmd->body.type, &sw_context->staged_cmd_res);
1973 	if (unlikely(ret != 0))
1974 		return ret;
1975 
1976 	return vmw_resource_relocation_add(sw_context, NULL,
1977 					   vmw_ptr_diff(sw_context->buf_start,
1978 							&cmd->header.id),
1979 					   vmw_res_rel_nop);
1980 }
1981 
1982 /**
1983  * vmw_cmd_set_shader - Validate SVGA_3D_CMD_SET_SHADER command
1984  *
1985  * @dev_priv: Pointer to a device private struct.
1986  * @sw_context: The software context being used for this batch.
1987  * @header: Pointer to the command header in the command stream.
1988  */
1989 static int vmw_cmd_set_shader(struct vmw_private *dev_priv,
1990 			      struct vmw_sw_context *sw_context,
1991 			      SVGA3dCmdHeader *header)
1992 {
1993 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdSetShader);
1994 	struct vmw_ctx_bindinfo_shader binding;
1995 	struct vmw_resource *ctx, *res = NULL;
1996 	struct vmw_ctx_validation_info *ctx_info;
1997 	int ret;
1998 
1999 	cmd = container_of(header, typeof(*cmd), header);
2000 
2001 	if (cmd->body.type >= SVGA3D_SHADERTYPE_PREDX_MAX) {
2002 		VMW_DEBUG_USER("Illegal shader type %u.\n",
2003 			       (unsigned int) cmd->body.type);
2004 		return -EINVAL;
2005 	}
2006 
2007 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
2008 				VMW_RES_DIRTY_SET, user_context_converter,
2009 				&cmd->body.cid, &ctx);
2010 	if (unlikely(ret != 0))
2011 		return ret;
2012 
2013 	if (!dev_priv->has_mob)
2014 		return 0;
2015 
2016 	if (cmd->body.shid != SVGA3D_INVALID_ID) {
2017 		/*
2018 		 * This is the compat shader path - Per device guest-backed
2019 		 * shaders, but user-space thinks it's per context host-
2020 		 * backed shaders.
2021 		 */
2022 		res = vmw_shader_lookup(vmw_context_res_man(ctx),
2023 					cmd->body.shid, cmd->body.type);
2024 		if (!IS_ERR(res)) {
2025 			ret = vmw_execbuf_res_noctx_val_add(sw_context, res,
2026 							    VMW_RES_DIRTY_NONE);
2027 			if (unlikely(ret != 0))
2028 				return ret;
2029 
2030 			ret = vmw_resource_relocation_add
2031 				(sw_context, res,
2032 				 vmw_ptr_diff(sw_context->buf_start,
2033 					      &cmd->body.shid),
2034 				 vmw_res_rel_normal);
2035 			if (unlikely(ret != 0))
2036 				return ret;
2037 		}
2038 	}
2039 
2040 	if (IS_ERR_OR_NULL(res)) {
2041 		ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_shader,
2042 					VMW_RES_DIRTY_NONE,
2043 					user_shader_converter, &cmd->body.shid,
2044 					&res);
2045 		if (unlikely(ret != 0))
2046 			return ret;
2047 	}
2048 
2049 	ctx_info = vmw_execbuf_info_from_res(sw_context, ctx);
2050 	if (!ctx_info)
2051 		return -EINVAL;
2052 
2053 	binding.bi.ctx = ctx;
2054 	binding.bi.res = res;
2055 	binding.bi.bt = vmw_ctx_binding_shader;
2056 	binding.shader_slot = cmd->body.type - SVGA3D_SHADERTYPE_MIN;
2057 	vmw_binding_add(ctx_info->staged, &binding.bi, binding.shader_slot, 0);
2058 
2059 	return 0;
2060 }
2061 
2062 /**
2063  * vmw_cmd_set_shader_const - Validate SVGA_3D_CMD_SET_SHADER_CONST command
2064  *
2065  * @dev_priv: Pointer to a device private struct.
2066  * @sw_context: The software context being used for this batch.
2067  * @header: Pointer to the command header in the command stream.
2068  */
2069 static int vmw_cmd_set_shader_const(struct vmw_private *dev_priv,
2070 				    struct vmw_sw_context *sw_context,
2071 				    SVGA3dCmdHeader *header)
2072 {
2073 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdSetShaderConst);
2074 	int ret;
2075 
2076 	cmd = container_of(header, typeof(*cmd), header);
2077 
2078 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
2079 				VMW_RES_DIRTY_SET, user_context_converter,
2080 				&cmd->body.cid, NULL);
2081 	if (unlikely(ret != 0))
2082 		return ret;
2083 
2084 	if (dev_priv->has_mob)
2085 		header->id = SVGA_3D_CMD_SET_GB_SHADERCONSTS_INLINE;
2086 
2087 	return 0;
2088 }
2089 
2090 /**
2091  * vmw_cmd_bind_gb_shader - Validate SVGA_3D_CMD_BIND_GB_SHADER command
2092  *
2093  * @dev_priv: Pointer to a device private struct.
2094  * @sw_context: The software context being used for this batch.
2095  * @header: Pointer to the command header in the command stream.
2096  */
2097 static int vmw_cmd_bind_gb_shader(struct vmw_private *dev_priv,
2098 				  struct vmw_sw_context *sw_context,
2099 				  SVGA3dCmdHeader *header)
2100 {
2101 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdBindGBShader) =
2102 		container_of(header, typeof(*cmd), header);
2103 
2104 	return vmw_cmd_switch_backup(dev_priv, sw_context, vmw_res_shader,
2105 				     user_shader_converter, &cmd->body.shid,
2106 				     &cmd->body.mobid, cmd->body.offsetInBytes);
2107 }
2108 
2109 /**
2110  * vmw_cmd_dx_set_single_constant_buffer - Validate
2111  * SVGA_3D_CMD_DX_SET_SINGLE_CONSTANT_BUFFER command.
2112  *
2113  * @dev_priv: Pointer to a device private struct.
2114  * @sw_context: The software context being used for this batch.
2115  * @header: Pointer to the command header in the command stream.
2116  */
2117 static int
2118 vmw_cmd_dx_set_single_constant_buffer(struct vmw_private *dev_priv,
2119 				      struct vmw_sw_context *sw_context,
2120 				      SVGA3dCmdHeader *header)
2121 {
2122 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXSetSingleConstantBuffer);
2123 	SVGA3dShaderType max_shader_num = has_sm5_context(dev_priv) ?
2124 		SVGA3D_NUM_SHADERTYPE : SVGA3D_NUM_SHADERTYPE_DX10;
2125 
2126 	struct vmw_resource *res = NULL;
2127 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
2128 	struct vmw_ctx_bindinfo_cb binding;
2129 	int ret;
2130 
2131 	if (!ctx_node)
2132 		return -EINVAL;
2133 
2134 	cmd = container_of(header, typeof(*cmd), header);
2135 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2136 				VMW_RES_DIRTY_NONE, user_surface_converter,
2137 				&cmd->body.sid, &res);
2138 	if (unlikely(ret != 0))
2139 		return ret;
2140 
2141 	binding.bi.ctx = ctx_node->ctx;
2142 	binding.bi.res = res;
2143 	binding.bi.bt = vmw_ctx_binding_cb;
2144 	binding.shader_slot = cmd->body.type - SVGA3D_SHADERTYPE_MIN;
2145 	binding.offset = cmd->body.offsetInBytes;
2146 	binding.size = cmd->body.sizeInBytes;
2147 	binding.slot = cmd->body.slot;
2148 
2149 	if (binding.shader_slot >= max_shader_num ||
2150 	    binding.slot >= SVGA3D_DX_MAX_CONSTBUFFERS) {
2151 		VMW_DEBUG_USER("Illegal const buffer shader %u slot %u.\n",
2152 			       (unsigned int) cmd->body.type,
2153 			       (unsigned int) binding.slot);
2154 		return -EINVAL;
2155 	}
2156 
2157 	vmw_binding_add(ctx_node->staged, &binding.bi, binding.shader_slot,
2158 			binding.slot);
2159 
2160 	return 0;
2161 }
2162 
2163 /**
2164  * vmw_cmd_dx_set_shader_res - Validate SVGA_3D_CMD_DX_SET_SHADER_RESOURCES
2165  * command
2166  *
2167  * @dev_priv: Pointer to a device private struct.
2168  * @sw_context: The software context being used for this batch.
2169  * @header: Pointer to the command header in the command stream.
2170  */
2171 static int vmw_cmd_dx_set_shader_res(struct vmw_private *dev_priv,
2172 				     struct vmw_sw_context *sw_context,
2173 				     SVGA3dCmdHeader *header)
2174 {
2175 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXSetShaderResources) =
2176 		container_of(header, typeof(*cmd), header);
2177 	SVGA3dShaderType max_allowed = has_sm5_context(dev_priv) ?
2178 		SVGA3D_SHADERTYPE_MAX : SVGA3D_SHADERTYPE_DX10_MAX;
2179 
2180 	u32 num_sr_view = (cmd->header.size - sizeof(cmd->body)) /
2181 		sizeof(SVGA3dShaderResourceViewId);
2182 
2183 	if ((u64) cmd->body.startView + (u64) num_sr_view >
2184 	    (u64) SVGA3D_DX_MAX_SRVIEWS ||
2185 	    cmd->body.type >= max_allowed) {
2186 		VMW_DEBUG_USER("Invalid shader binding.\n");
2187 		return -EINVAL;
2188 	}
2189 
2190 	return vmw_view_bindings_add(sw_context, vmw_view_sr,
2191 				     vmw_ctx_binding_sr,
2192 				     cmd->body.type - SVGA3D_SHADERTYPE_MIN,
2193 				     (void *) &cmd[1], num_sr_view,
2194 				     cmd->body.startView);
2195 }
2196 
2197 /**
2198  * vmw_cmd_dx_set_shader - Validate SVGA_3D_CMD_DX_SET_SHADER command
2199  *
2200  * @dev_priv: Pointer to a device private struct.
2201  * @sw_context: The software context being used for this batch.
2202  * @header: Pointer to the command header in the command stream.
2203  */
2204 static int vmw_cmd_dx_set_shader(struct vmw_private *dev_priv,
2205 				 struct vmw_sw_context *sw_context,
2206 				 SVGA3dCmdHeader *header)
2207 {
2208 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXSetShader);
2209 	SVGA3dShaderType max_allowed = has_sm5_context(dev_priv) ?
2210 		SVGA3D_SHADERTYPE_MAX : SVGA3D_SHADERTYPE_DX10_MAX;
2211 	struct vmw_resource *res = NULL;
2212 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
2213 	struct vmw_ctx_bindinfo_shader binding;
2214 	int ret = 0;
2215 
2216 	if (!ctx_node)
2217 		return -EINVAL;
2218 
2219 	cmd = container_of(header, typeof(*cmd), header);
2220 
2221 	if (cmd->body.type >= max_allowed ||
2222 	    cmd->body.type < SVGA3D_SHADERTYPE_MIN) {
2223 		VMW_DEBUG_USER("Illegal shader type %u.\n",
2224 			       (unsigned int) cmd->body.type);
2225 		return -EINVAL;
2226 	}
2227 
2228 	if (cmd->body.shaderId != SVGA3D_INVALID_ID) {
2229 		res = vmw_shader_lookup(sw_context->man, cmd->body.shaderId, 0);
2230 		if (IS_ERR(res)) {
2231 			VMW_DEBUG_USER("Could not find shader for binding.\n");
2232 			return PTR_ERR(res);
2233 		}
2234 
2235 		ret = vmw_execbuf_res_noctx_val_add(sw_context, res,
2236 						    VMW_RES_DIRTY_NONE);
2237 		if (ret)
2238 			return ret;
2239 	}
2240 
2241 	binding.bi.ctx = ctx_node->ctx;
2242 	binding.bi.res = res;
2243 	binding.bi.bt = vmw_ctx_binding_dx_shader;
2244 	binding.shader_slot = cmd->body.type - SVGA3D_SHADERTYPE_MIN;
2245 
2246 	vmw_binding_add(ctx_node->staged, &binding.bi, binding.shader_slot, 0);
2247 
2248 	return 0;
2249 }
2250 
2251 /**
2252  * vmw_cmd_dx_set_vertex_buffers - Validates SVGA_3D_CMD_DX_SET_VERTEX_BUFFERS
2253  * command
2254  *
2255  * @dev_priv: Pointer to a device private struct.
2256  * @sw_context: The software context being used for this batch.
2257  * @header: Pointer to the command header in the command stream.
2258  */
2259 static int vmw_cmd_dx_set_vertex_buffers(struct vmw_private *dev_priv,
2260 					 struct vmw_sw_context *sw_context,
2261 					 SVGA3dCmdHeader *header)
2262 {
2263 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
2264 	struct vmw_ctx_bindinfo_vb binding;
2265 	struct vmw_resource *res;
2266 	struct {
2267 		SVGA3dCmdHeader header;
2268 		SVGA3dCmdDXSetVertexBuffers body;
2269 		SVGA3dVertexBuffer buf[];
2270 	} *cmd;
2271 	int i, ret, num;
2272 
2273 	if (!ctx_node)
2274 		return -EINVAL;
2275 
2276 	cmd = container_of(header, typeof(*cmd), header);
2277 	num = (cmd->header.size - sizeof(cmd->body)) /
2278 		sizeof(SVGA3dVertexBuffer);
2279 	if ((u64)num + (u64)cmd->body.startBuffer >
2280 	    (u64)SVGA3D_DX_MAX_VERTEXBUFFERS) {
2281 		VMW_DEBUG_USER("Invalid number of vertex buffers.\n");
2282 		return -EINVAL;
2283 	}
2284 
2285 	for (i = 0; i < num; i++) {
2286 		ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2287 					VMW_RES_DIRTY_NONE,
2288 					user_surface_converter,
2289 					&cmd->buf[i].sid, &res);
2290 		if (unlikely(ret != 0))
2291 			return ret;
2292 
2293 		binding.bi.ctx = ctx_node->ctx;
2294 		binding.bi.bt = vmw_ctx_binding_vb;
2295 		binding.bi.res = res;
2296 		binding.offset = cmd->buf[i].offset;
2297 		binding.stride = cmd->buf[i].stride;
2298 		binding.slot = i + cmd->body.startBuffer;
2299 
2300 		vmw_binding_add(ctx_node->staged, &binding.bi, 0, binding.slot);
2301 	}
2302 
2303 	return 0;
2304 }
2305 
2306 /**
2307  * vmw_cmd_dx_ia_set_vertex_buffers - Validate
2308  * SVGA_3D_CMD_DX_IA_SET_INDEX_BUFFER command.
2309  *
2310  * @dev_priv: Pointer to a device private struct.
2311  * @sw_context: The software context being used for this batch.
2312  * @header: Pointer to the command header in the command stream.
2313  */
2314 static int vmw_cmd_dx_set_index_buffer(struct vmw_private *dev_priv,
2315 				       struct vmw_sw_context *sw_context,
2316 				       SVGA3dCmdHeader *header)
2317 {
2318 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
2319 	struct vmw_ctx_bindinfo_ib binding;
2320 	struct vmw_resource *res;
2321 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXSetIndexBuffer);
2322 	int ret;
2323 
2324 	if (!ctx_node)
2325 		return -EINVAL;
2326 
2327 	cmd = container_of(header, typeof(*cmd), header);
2328 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2329 				VMW_RES_DIRTY_NONE, user_surface_converter,
2330 				&cmd->body.sid, &res);
2331 	if (unlikely(ret != 0))
2332 		return ret;
2333 
2334 	binding.bi.ctx = ctx_node->ctx;
2335 	binding.bi.res = res;
2336 	binding.bi.bt = vmw_ctx_binding_ib;
2337 	binding.offset = cmd->body.offset;
2338 	binding.format = cmd->body.format;
2339 
2340 	vmw_binding_add(ctx_node->staged, &binding.bi, 0, 0);
2341 
2342 	return 0;
2343 }
2344 
2345 /**
2346  * vmw_cmd_dx_set_rendertarget - Validate SVGA_3D_CMD_DX_SET_RENDERTARGETS
2347  * command
2348  *
2349  * @dev_priv: Pointer to a device private struct.
2350  * @sw_context: The software context being used for this batch.
2351  * @header: Pointer to the command header in the command stream.
2352  */
2353 static int vmw_cmd_dx_set_rendertargets(struct vmw_private *dev_priv,
2354 					struct vmw_sw_context *sw_context,
2355 					SVGA3dCmdHeader *header)
2356 {
2357 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXSetRenderTargets) =
2358 		container_of(header, typeof(*cmd), header);
2359 	u32 num_rt_view = (cmd->header.size - sizeof(cmd->body)) /
2360 		sizeof(SVGA3dRenderTargetViewId);
2361 	int ret;
2362 
2363 	if (num_rt_view > SVGA3D_MAX_SIMULTANEOUS_RENDER_TARGETS) {
2364 		VMW_DEBUG_USER("Invalid DX Rendertarget binding.\n");
2365 		return -EINVAL;
2366 	}
2367 
2368 	ret = vmw_view_bindings_add(sw_context, vmw_view_ds, vmw_ctx_binding_ds,
2369 				    0, &cmd->body.depthStencilViewId, 1, 0);
2370 	if (ret)
2371 		return ret;
2372 
2373 	return vmw_view_bindings_add(sw_context, vmw_view_rt,
2374 				     vmw_ctx_binding_dx_rt, 0, (void *)&cmd[1],
2375 				     num_rt_view, 0);
2376 }
2377 
2378 /**
2379  * vmw_cmd_dx_clear_rendertarget_view - Validate
2380  * SVGA_3D_CMD_DX_CLEAR_RENDERTARGET_VIEW command
2381  *
2382  * @dev_priv: Pointer to a device private struct.
2383  * @sw_context: The software context being used for this batch.
2384  * @header: Pointer to the command header in the command stream.
2385  */
2386 static int vmw_cmd_dx_clear_rendertarget_view(struct vmw_private *dev_priv,
2387 					      struct vmw_sw_context *sw_context,
2388 					      SVGA3dCmdHeader *header)
2389 {
2390 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXClearRenderTargetView) =
2391 		container_of(header, typeof(*cmd), header);
2392 	struct vmw_resource *ret;
2393 
2394 	ret = vmw_view_id_val_add(sw_context, vmw_view_rt,
2395 				  cmd->body.renderTargetViewId);
2396 
2397 	return PTR_ERR_OR_ZERO(ret);
2398 }
2399 
2400 /**
2401  * vmw_cmd_dx_clear_rendertarget_view - Validate
2402  * SVGA_3D_CMD_DX_CLEAR_DEPTHSTENCIL_VIEW command
2403  *
2404  * @dev_priv: Pointer to a device private struct.
2405  * @sw_context: The software context being used for this batch.
2406  * @header: Pointer to the command header in the command stream.
2407  */
2408 static int vmw_cmd_dx_clear_depthstencil_view(struct vmw_private *dev_priv,
2409 					      struct vmw_sw_context *sw_context,
2410 					      SVGA3dCmdHeader *header)
2411 {
2412 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXClearDepthStencilView) =
2413 		container_of(header, typeof(*cmd), header);
2414 	struct vmw_resource *ret;
2415 
2416 	ret = vmw_view_id_val_add(sw_context, vmw_view_ds,
2417 				  cmd->body.depthStencilViewId);
2418 
2419 	return PTR_ERR_OR_ZERO(ret);
2420 }
2421 
2422 static int vmw_cmd_dx_view_define(struct vmw_private *dev_priv,
2423 				  struct vmw_sw_context *sw_context,
2424 				  SVGA3dCmdHeader *header)
2425 {
2426 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
2427 	struct vmw_resource *srf;
2428 	struct vmw_resource *res;
2429 	enum vmw_view_type view_type;
2430 	int ret;
2431 	/*
2432 	 * This is based on the fact that all affected define commands have the
2433 	 * same initial command body layout.
2434 	 */
2435 	struct {
2436 		SVGA3dCmdHeader header;
2437 		uint32 defined_id;
2438 		uint32 sid;
2439 	} *cmd;
2440 
2441 	if (!ctx_node)
2442 		return -EINVAL;
2443 
2444 	view_type = vmw_view_cmd_to_type(header->id);
2445 	if (view_type == vmw_view_max)
2446 		return -EINVAL;
2447 
2448 	cmd = container_of(header, typeof(*cmd), header);
2449 	if (unlikely(cmd->sid == SVGA3D_INVALID_ID)) {
2450 		VMW_DEBUG_USER("Invalid surface id.\n");
2451 		return -EINVAL;
2452 	}
2453 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2454 				VMW_RES_DIRTY_NONE, user_surface_converter,
2455 				&cmd->sid, &srf);
2456 	if (unlikely(ret != 0))
2457 		return ret;
2458 
2459 	res = vmw_context_cotable(ctx_node->ctx, vmw_view_cotables[view_type]);
2460 	ret = vmw_cotable_notify(res, cmd->defined_id);
2461 	if (unlikely(ret != 0))
2462 		return ret;
2463 
2464 	return vmw_view_add(sw_context->man, ctx_node->ctx, srf, view_type,
2465 			    cmd->defined_id, header,
2466 			    header->size + sizeof(*header),
2467 			    &sw_context->staged_cmd_res);
2468 }
2469 
2470 /**
2471  * vmw_cmd_dx_set_so_targets - Validate SVGA_3D_CMD_DX_SET_SOTARGETS command.
2472  *
2473  * @dev_priv: Pointer to a device private struct.
2474  * @sw_context: The software context being used for this batch.
2475  * @header: Pointer to the command header in the command stream.
2476  */
2477 static int vmw_cmd_dx_set_so_targets(struct vmw_private *dev_priv,
2478 				     struct vmw_sw_context *sw_context,
2479 				     SVGA3dCmdHeader *header)
2480 {
2481 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
2482 	struct vmw_ctx_bindinfo_so_target binding;
2483 	struct vmw_resource *res;
2484 	struct {
2485 		SVGA3dCmdHeader header;
2486 		SVGA3dCmdDXSetSOTargets body;
2487 		SVGA3dSoTarget targets[];
2488 	} *cmd;
2489 	int i, ret, num;
2490 
2491 	if (!ctx_node)
2492 		return -EINVAL;
2493 
2494 	cmd = container_of(header, typeof(*cmd), header);
2495 	num = (cmd->header.size - sizeof(cmd->body)) / sizeof(SVGA3dSoTarget);
2496 
2497 	if (num > SVGA3D_DX_MAX_SOTARGETS) {
2498 		VMW_DEBUG_USER("Invalid DX SO binding.\n");
2499 		return -EINVAL;
2500 	}
2501 
2502 	for (i = 0; i < num; i++) {
2503 		ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2504 					VMW_RES_DIRTY_SET,
2505 					user_surface_converter,
2506 					&cmd->targets[i].sid, &res);
2507 		if (unlikely(ret != 0))
2508 			return ret;
2509 
2510 		binding.bi.ctx = ctx_node->ctx;
2511 		binding.bi.res = res;
2512 		binding.bi.bt = vmw_ctx_binding_so_target,
2513 		binding.offset = cmd->targets[i].offset;
2514 		binding.size = cmd->targets[i].sizeInBytes;
2515 		binding.slot = i;
2516 
2517 		vmw_binding_add(ctx_node->staged, &binding.bi, 0, binding.slot);
2518 	}
2519 
2520 	return 0;
2521 }
2522 
2523 static int vmw_cmd_dx_so_define(struct vmw_private *dev_priv,
2524 				struct vmw_sw_context *sw_context,
2525 				SVGA3dCmdHeader *header)
2526 {
2527 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
2528 	struct vmw_resource *res;
2529 	/*
2530 	 * This is based on the fact that all affected define commands have
2531 	 * the same initial command body layout.
2532 	 */
2533 	struct {
2534 		SVGA3dCmdHeader header;
2535 		uint32 defined_id;
2536 	} *cmd;
2537 	enum vmw_so_type so_type;
2538 	int ret;
2539 
2540 	if (!ctx_node)
2541 		return -EINVAL;
2542 
2543 	so_type = vmw_so_cmd_to_type(header->id);
2544 	res = vmw_context_cotable(ctx_node->ctx, vmw_so_cotables[so_type]);
2545 	cmd = container_of(header, typeof(*cmd), header);
2546 	ret = vmw_cotable_notify(res, cmd->defined_id);
2547 
2548 	return ret;
2549 }
2550 
2551 /**
2552  * vmw_cmd_dx_check_subresource - Validate SVGA_3D_CMD_DX_[X]_SUBRESOURCE
2553  * command
2554  *
2555  * @dev_priv: Pointer to a device private struct.
2556  * @sw_context: The software context being used for this batch.
2557  * @header: Pointer to the command header in the command stream.
2558  */
2559 static int vmw_cmd_dx_check_subresource(struct vmw_private *dev_priv,
2560 					struct vmw_sw_context *sw_context,
2561 					SVGA3dCmdHeader *header)
2562 {
2563 	struct {
2564 		SVGA3dCmdHeader header;
2565 		union {
2566 			SVGA3dCmdDXReadbackSubResource r_body;
2567 			SVGA3dCmdDXInvalidateSubResource i_body;
2568 			SVGA3dCmdDXUpdateSubResource u_body;
2569 			SVGA3dSurfaceId sid;
2570 		};
2571 	} *cmd;
2572 
2573 	BUILD_BUG_ON(offsetof(typeof(*cmd), r_body.sid) !=
2574 		     offsetof(typeof(*cmd), sid));
2575 	BUILD_BUG_ON(offsetof(typeof(*cmd), i_body.sid) !=
2576 		     offsetof(typeof(*cmd), sid));
2577 	BUILD_BUG_ON(offsetof(typeof(*cmd), u_body.sid) !=
2578 		     offsetof(typeof(*cmd), sid));
2579 
2580 	cmd = container_of(header, typeof(*cmd), header);
2581 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2582 				 VMW_RES_DIRTY_NONE, user_surface_converter,
2583 				 &cmd->sid, NULL);
2584 }
2585 
2586 static int vmw_cmd_dx_cid_check(struct vmw_private *dev_priv,
2587 				struct vmw_sw_context *sw_context,
2588 				SVGA3dCmdHeader *header)
2589 {
2590 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
2591 
2592 	if (!ctx_node)
2593 		return -EINVAL;
2594 
2595 	return 0;
2596 }
2597 
2598 /**
2599  * vmw_cmd_dx_view_remove - validate a view remove command and schedule the view
2600  * resource for removal.
2601  *
2602  * @dev_priv: Pointer to a device private struct.
2603  * @sw_context: The software context being used for this batch.
2604  * @header: Pointer to the command header in the command stream.
2605  *
2606  * Check that the view exists, and if it was not created using this command
2607  * batch, conditionally make this command a NOP.
2608  */
2609 static int vmw_cmd_dx_view_remove(struct vmw_private *dev_priv,
2610 				  struct vmw_sw_context *sw_context,
2611 				  SVGA3dCmdHeader *header)
2612 {
2613 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
2614 	struct {
2615 		SVGA3dCmdHeader header;
2616 		union vmw_view_destroy body;
2617 	} *cmd = container_of(header, typeof(*cmd), header);
2618 	enum vmw_view_type view_type = vmw_view_cmd_to_type(header->id);
2619 	struct vmw_resource *view;
2620 	int ret;
2621 
2622 	if (!ctx_node)
2623 		return -EINVAL;
2624 
2625 	ret = vmw_view_remove(sw_context->man, cmd->body.view_id, view_type,
2626 			      &sw_context->staged_cmd_res, &view);
2627 	if (ret || !view)
2628 		return ret;
2629 
2630 	/*
2631 	 * If the view wasn't created during this command batch, it might
2632 	 * have been removed due to a context swapout, so add a
2633 	 * relocation to conditionally make this command a NOP to avoid
2634 	 * device errors.
2635 	 */
2636 	return vmw_resource_relocation_add(sw_context, view,
2637 					   vmw_ptr_diff(sw_context->buf_start,
2638 							&cmd->header.id),
2639 					   vmw_res_rel_cond_nop);
2640 }
2641 
2642 /**
2643  * vmw_cmd_dx_define_shader - Validate SVGA_3D_CMD_DX_DEFINE_SHADER command
2644  *
2645  * @dev_priv: Pointer to a device private struct.
2646  * @sw_context: The software context being used for this batch.
2647  * @header: Pointer to the command header in the command stream.
2648  */
2649 static int vmw_cmd_dx_define_shader(struct vmw_private *dev_priv,
2650 				    struct vmw_sw_context *sw_context,
2651 				    SVGA3dCmdHeader *header)
2652 {
2653 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
2654 	struct vmw_resource *res;
2655 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXDefineShader) =
2656 		container_of(header, typeof(*cmd), header);
2657 	int ret;
2658 
2659 	if (!ctx_node)
2660 		return -EINVAL;
2661 
2662 	res = vmw_context_cotable(ctx_node->ctx, SVGA_COTABLE_DXSHADER);
2663 	ret = vmw_cotable_notify(res, cmd->body.shaderId);
2664 	if (ret)
2665 		return ret;
2666 
2667 	return vmw_dx_shader_add(sw_context->man, ctx_node->ctx,
2668 				 cmd->body.shaderId, cmd->body.type,
2669 				 &sw_context->staged_cmd_res);
2670 }
2671 
2672 /**
2673  * vmw_cmd_dx_destroy_shader - Validate SVGA_3D_CMD_DX_DESTROY_SHADER command
2674  *
2675  * @dev_priv: Pointer to a device private struct.
2676  * @sw_context: The software context being used for this batch.
2677  * @header: Pointer to the command header in the command stream.
2678  */
2679 static int vmw_cmd_dx_destroy_shader(struct vmw_private *dev_priv,
2680 				     struct vmw_sw_context *sw_context,
2681 				     SVGA3dCmdHeader *header)
2682 {
2683 	struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
2684 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXDestroyShader) =
2685 		container_of(header, typeof(*cmd), header);
2686 	int ret;
2687 
2688 	if (!ctx_node)
2689 		return -EINVAL;
2690 
2691 	ret = vmw_shader_remove(sw_context->man, cmd->body.shaderId, 0,
2692 				&sw_context->staged_cmd_res);
2693 
2694 	return ret;
2695 }
2696 
2697 /**
2698  * vmw_cmd_dx_bind_shader - Validate SVGA_3D_CMD_DX_BIND_SHADER command
2699  *
2700  * @dev_priv: Pointer to a device private struct.
2701  * @sw_context: The software context being used for this batch.
2702  * @header: Pointer to the command header in the command stream.
2703  */
2704 static int vmw_cmd_dx_bind_shader(struct vmw_private *dev_priv,
2705 				  struct vmw_sw_context *sw_context,
2706 				  SVGA3dCmdHeader *header)
2707 {
2708 	struct vmw_resource *ctx;
2709 	struct vmw_resource *res;
2710 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXBindShader) =
2711 		container_of(header, typeof(*cmd), header);
2712 	int ret;
2713 
2714 	if (cmd->body.cid != SVGA3D_INVALID_ID) {
2715 		ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
2716 					VMW_RES_DIRTY_SET,
2717 					user_context_converter, &cmd->body.cid,
2718 					&ctx);
2719 		if (ret)
2720 			return ret;
2721 	} else {
2722 		struct vmw_ctx_validation_info *ctx_node =
2723 			VMW_GET_CTX_NODE(sw_context);
2724 
2725 		if (!ctx_node)
2726 			return -EINVAL;
2727 
2728 		ctx = ctx_node->ctx;
2729 	}
2730 
2731 	res = vmw_shader_lookup(vmw_context_res_man(ctx), cmd->body.shid, 0);
2732 	if (IS_ERR(res)) {
2733 		VMW_DEBUG_USER("Could not find shader to bind.\n");
2734 		return PTR_ERR(res);
2735 	}
2736 
2737 	ret = vmw_execbuf_res_noctx_val_add(sw_context, res,
2738 					    VMW_RES_DIRTY_NONE);
2739 	if (ret) {
2740 		VMW_DEBUG_USER("Error creating resource validation node.\n");
2741 		return ret;
2742 	}
2743 
2744 	return vmw_cmd_res_switch_backup(dev_priv, sw_context, res,
2745 					 &cmd->body.mobid,
2746 					 cmd->body.offsetInBytes);
2747 }
2748 
2749 /**
2750  * vmw_cmd_dx_genmips - Validate SVGA_3D_CMD_DX_GENMIPS command
2751  *
2752  * @dev_priv: Pointer to a device private struct.
2753  * @sw_context: The software context being used for this batch.
2754  * @header: Pointer to the command header in the command stream.
2755  */
2756 static int vmw_cmd_dx_genmips(struct vmw_private *dev_priv,
2757 			      struct vmw_sw_context *sw_context,
2758 			      SVGA3dCmdHeader *header)
2759 {
2760 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXGenMips) =
2761 		container_of(header, typeof(*cmd), header);
2762 	struct vmw_resource *ret;
2763 
2764 	ret = vmw_view_id_val_add(sw_context, vmw_view_sr,
2765 				  cmd->body.shaderResourceViewId);
2766 
2767 	return PTR_ERR_OR_ZERO(ret);
2768 }
2769 
2770 /**
2771  * vmw_cmd_dx_transfer_from_buffer - Validate
2772  * SVGA_3D_CMD_DX_TRANSFER_FROM_BUFFER command
2773  *
2774  * @dev_priv: Pointer to a device private struct.
2775  * @sw_context: The software context being used for this batch.
2776  * @header: Pointer to the command header in the command stream.
2777  */
2778 static int vmw_cmd_dx_transfer_from_buffer(struct vmw_private *dev_priv,
2779 					   struct vmw_sw_context *sw_context,
2780 					   SVGA3dCmdHeader *header)
2781 {
2782 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXTransferFromBuffer) =
2783 		container_of(header, typeof(*cmd), header);
2784 	int ret;
2785 
2786 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2787 				VMW_RES_DIRTY_NONE, user_surface_converter,
2788 				&cmd->body.srcSid, NULL);
2789 	if (ret != 0)
2790 		return ret;
2791 
2792 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2793 				 VMW_RES_DIRTY_SET, user_surface_converter,
2794 				 &cmd->body.destSid, NULL);
2795 }
2796 
2797 /**
2798  * vmw_cmd_intra_surface_copy - Validate SVGA_3D_CMD_INTRA_SURFACE_COPY command
2799  *
2800  * @dev_priv: Pointer to a device private struct.
2801  * @sw_context: The software context being used for this batch.
2802  * @header: Pointer to the command header in the command stream.
2803  */
2804 static int vmw_cmd_intra_surface_copy(struct vmw_private *dev_priv,
2805 					   struct vmw_sw_context *sw_context,
2806 					   SVGA3dCmdHeader *header)
2807 {
2808 	VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdIntraSurfaceCopy) =
2809 		container_of(header, typeof(*cmd), header);
2810 
2811 	if (!(dev_priv->capabilities2 & SVGA_CAP2_INTRA_SURFACE_COPY))
2812 		return -EINVAL;
2813 
2814 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2815 				 VMW_RES_DIRTY_SET, user_surface_converter,
2816 				 &cmd->body.surface.sid, NULL);
2817 }
2818 
2819 static int vmw_cmd_sm5(struct vmw_private *dev_priv,
2820 		       struct vmw_sw_context *sw_context,
2821 		       SVGA3dCmdHeader *header)
2822 {
2823 	if (!has_sm5_context(dev_priv))
2824 		return -EINVAL;
2825 
2826 	return 0;
2827 }
2828 
2829 static int vmw_cmd_sm5_view_define(struct vmw_private *dev_priv,
2830 				   struct vmw_sw_context *sw_context,
2831 				   SVGA3dCmdHeader *header)
2832 {
2833 	if (!has_sm5_context(dev_priv))
2834 		return -EINVAL;
2835 
2836 	return vmw_cmd_dx_view_define(dev_priv, sw_context, header);
2837 }
2838 
2839 static int vmw_cmd_sm5_view_remove(struct vmw_private *dev_priv,
2840 				   struct vmw_sw_context *sw_context,
2841 				   SVGA3dCmdHeader *header)
2842 {
2843 	if (!has_sm5_context(dev_priv))
2844 		return -EINVAL;
2845 
2846 	return vmw_cmd_dx_view_remove(dev_priv, sw_context, header);
2847 }
2848 
2849 static int vmw_cmd_clear_uav_uint(struct vmw_private *dev_priv,
2850 				  struct vmw_sw_context *sw_context,
2851 				  SVGA3dCmdHeader *header)
2852 {
2853 	struct {
2854 		SVGA3dCmdHeader header;
2855 		SVGA3dCmdDXClearUAViewUint body;
2856 	} *cmd = container_of(header, typeof(*cmd), header);
2857 	struct vmw_resource *ret;
2858 
2859 	if (!has_sm5_context(dev_priv))
2860 		return -EINVAL;
2861 
2862 	ret = vmw_view_id_val_add(sw_context, vmw_view_ua,
2863 				  cmd->body.uaViewId);
2864 
2865 	return PTR_ERR_OR_ZERO(ret);
2866 }
2867 
2868 static int vmw_cmd_clear_uav_float(struct vmw_private *dev_priv,
2869 				   struct vmw_sw_context *sw_context,
2870 				   SVGA3dCmdHeader *header)
2871 {
2872 	struct {
2873 		SVGA3dCmdHeader header;
2874 		SVGA3dCmdDXClearUAViewFloat body;
2875 	} *cmd = container_of(header, typeof(*cmd), header);
2876 	struct vmw_resource *ret;
2877 
2878 	if (!has_sm5_context(dev_priv))
2879 		return -EINVAL;
2880 
2881 	ret = vmw_view_id_val_add(sw_context, vmw_view_ua,
2882 				  cmd->body.uaViewId);
2883 
2884 	return PTR_ERR_OR_ZERO(ret);
2885 }
2886 
2887 static int vmw_cmd_set_uav(struct vmw_private *dev_priv,
2888 			   struct vmw_sw_context *sw_context,
2889 			   SVGA3dCmdHeader *header)
2890 {
2891 	struct {
2892 		SVGA3dCmdHeader header;
2893 		SVGA3dCmdDXSetUAViews body;
2894 	} *cmd = container_of(header, typeof(*cmd), header);
2895 	u32 num_uav = (cmd->header.size - sizeof(cmd->body)) /
2896 		sizeof(SVGA3dUAViewId);
2897 	int ret;
2898 
2899 	if (!has_sm5_context(dev_priv))
2900 		return -EINVAL;
2901 
2902 	if (num_uav > SVGA3D_MAX_UAVIEWS) {
2903 		VMW_DEBUG_USER("Invalid UAV binding.\n");
2904 		return -EINVAL;
2905 	}
2906 
2907 	ret = vmw_view_bindings_add(sw_context, vmw_view_ua,
2908 				    vmw_ctx_binding_uav, 0, (void *)&cmd[1],
2909 				    num_uav, 0);
2910 	if (ret)
2911 		return ret;
2912 
2913 	vmw_binding_add_uav_index(sw_context->dx_ctx_node->staged, 0,
2914 					 cmd->body.uavSpliceIndex);
2915 
2916 	return ret;
2917 }
2918 
2919 static int vmw_cmd_set_cs_uav(struct vmw_private *dev_priv,
2920 			      struct vmw_sw_context *sw_context,
2921 			      SVGA3dCmdHeader *header)
2922 {
2923 	struct {
2924 		SVGA3dCmdHeader header;
2925 		SVGA3dCmdDXSetCSUAViews body;
2926 	} *cmd = container_of(header, typeof(*cmd), header);
2927 	u32 num_uav = (cmd->header.size - sizeof(cmd->body)) /
2928 		sizeof(SVGA3dUAViewId);
2929 	int ret;
2930 
2931 	if (!has_sm5_context(dev_priv))
2932 		return -EINVAL;
2933 
2934 	if (num_uav > SVGA3D_MAX_UAVIEWS) {
2935 		VMW_DEBUG_USER("Invalid UAV binding.\n");
2936 		return -EINVAL;
2937 	}
2938 
2939 	ret = vmw_view_bindings_add(sw_context, vmw_view_ua,
2940 				    vmw_ctx_binding_cs_uav, 0, (void *)&cmd[1],
2941 				    num_uav, 0);
2942 	if (ret)
2943 		return ret;
2944 
2945 	vmw_binding_add_uav_index(sw_context->dx_ctx_node->staged, 1,
2946 				  cmd->body.startIndex);
2947 
2948 	return ret;
2949 }
2950 
2951 static int vmw_cmd_dx_define_streamoutput(struct vmw_private *dev_priv,
2952 					  struct vmw_sw_context *sw_context,
2953 					  SVGA3dCmdHeader *header)
2954 {
2955 	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
2956 	struct vmw_resource *res;
2957 	struct {
2958 		SVGA3dCmdHeader header;
2959 		SVGA3dCmdDXDefineStreamOutputWithMob body;
2960 	} *cmd = container_of(header, typeof(*cmd), header);
2961 	int ret;
2962 
2963 	if (!has_sm5_context(dev_priv))
2964 		return -EINVAL;
2965 
2966 	if (!ctx_node) {
2967 		DRM_ERROR("DX Context not set.\n");
2968 		return -EINVAL;
2969 	}
2970 
2971 	res = vmw_context_cotable(ctx_node->ctx, SVGA_COTABLE_STREAMOUTPUT);
2972 	ret = vmw_cotable_notify(res, cmd->body.soid);
2973 	if (ret)
2974 		return ret;
2975 
2976 	return vmw_dx_streamoutput_add(sw_context->man, ctx_node->ctx,
2977 				       cmd->body.soid,
2978 				       &sw_context->staged_cmd_res);
2979 }
2980 
2981 static int vmw_cmd_dx_destroy_streamoutput(struct vmw_private *dev_priv,
2982 					   struct vmw_sw_context *sw_context,
2983 					   SVGA3dCmdHeader *header)
2984 {
2985 	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
2986 	struct vmw_resource *res;
2987 	struct {
2988 		SVGA3dCmdHeader header;
2989 		SVGA3dCmdDXDestroyStreamOutput body;
2990 	} *cmd = container_of(header, typeof(*cmd), header);
2991 
2992 	if (!ctx_node) {
2993 		DRM_ERROR("DX Context not set.\n");
2994 		return -EINVAL;
2995 	}
2996 
2997 	/*
2998 	 * When device does not support SM5 then streamoutput with mob command is
2999 	 * not available to user-space. Simply return in this case.
3000 	 */
3001 	if (!has_sm5_context(dev_priv))
3002 		return 0;
3003 
3004 	/*
3005 	 * With SM5 capable device if lookup fails then user-space probably used
3006 	 * old streamoutput define command. Return without an error.
3007 	 */
3008 	res = vmw_dx_streamoutput_lookup(vmw_context_res_man(ctx_node->ctx),
3009 					 cmd->body.soid);
3010 	if (IS_ERR(res))
3011 		return 0;
3012 
3013 	return vmw_dx_streamoutput_remove(sw_context->man, cmd->body.soid,
3014 					  &sw_context->staged_cmd_res);
3015 }
3016 
3017 static int vmw_cmd_dx_bind_streamoutput(struct vmw_private *dev_priv,
3018 					struct vmw_sw_context *sw_context,
3019 					SVGA3dCmdHeader *header)
3020 {
3021 	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
3022 	struct vmw_resource *res;
3023 	struct {
3024 		SVGA3dCmdHeader header;
3025 		SVGA3dCmdDXBindStreamOutput body;
3026 	} *cmd = container_of(header, typeof(*cmd), header);
3027 	int ret;
3028 
3029 	if (!has_sm5_context(dev_priv))
3030 		return -EINVAL;
3031 
3032 	if (!ctx_node) {
3033 		DRM_ERROR("DX Context not set.\n");
3034 		return -EINVAL;
3035 	}
3036 
3037 	res = vmw_dx_streamoutput_lookup(vmw_context_res_man(ctx_node->ctx),
3038 					 cmd->body.soid);
3039 	if (IS_ERR(res)) {
3040 		DRM_ERROR("Could not find streamoutput to bind.\n");
3041 		return PTR_ERR(res);
3042 	}
3043 
3044 	vmw_dx_streamoutput_set_size(res, cmd->body.sizeInBytes);
3045 
3046 	ret = vmw_execbuf_res_noctx_val_add(sw_context, res,
3047 					    VMW_RES_DIRTY_NONE);
3048 	if (ret) {
3049 		DRM_ERROR("Error creating resource validation node.\n");
3050 		return ret;
3051 	}
3052 
3053 	return vmw_cmd_res_switch_backup(dev_priv, sw_context, res,
3054 					 &cmd->body.mobid,
3055 					 cmd->body.offsetInBytes);
3056 }
3057 
3058 static int vmw_cmd_dx_set_streamoutput(struct vmw_private *dev_priv,
3059 				       struct vmw_sw_context *sw_context,
3060 				       SVGA3dCmdHeader *header)
3061 {
3062 	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
3063 	struct vmw_resource *res;
3064 	struct vmw_ctx_bindinfo_so binding;
3065 	struct {
3066 		SVGA3dCmdHeader header;
3067 		SVGA3dCmdDXSetStreamOutput body;
3068 	} *cmd = container_of(header, typeof(*cmd), header);
3069 	int ret;
3070 
3071 	if (!ctx_node) {
3072 		DRM_ERROR("DX Context not set.\n");
3073 		return -EINVAL;
3074 	}
3075 
3076 	if (cmd->body.soid == SVGA3D_INVALID_ID)
3077 		return 0;
3078 
3079 	/*
3080 	 * When device does not support SM5 then streamoutput with mob command is
3081 	 * not available to user-space. Simply return in this case.
3082 	 */
3083 	if (!has_sm5_context(dev_priv))
3084 		return 0;
3085 
3086 	/*
3087 	 * With SM5 capable device if lookup fails then user-space probably used
3088 	 * old streamoutput define command. Return without an error.
3089 	 */
3090 	res = vmw_dx_streamoutput_lookup(vmw_context_res_man(ctx_node->ctx),
3091 					 cmd->body.soid);
3092 	if (IS_ERR(res)) {
3093 		return 0;
3094 	}
3095 
3096 	ret = vmw_execbuf_res_noctx_val_add(sw_context, res,
3097 					    VMW_RES_DIRTY_NONE);
3098 	if (ret) {
3099 		DRM_ERROR("Error creating resource validation node.\n");
3100 		return ret;
3101 	}
3102 
3103 	binding.bi.ctx = ctx_node->ctx;
3104 	binding.bi.res = res;
3105 	binding.bi.bt = vmw_ctx_binding_so;
3106 	binding.slot = 0; /* Only one SO set to context at a time. */
3107 
3108 	vmw_binding_add(sw_context->dx_ctx_node->staged, &binding.bi, 0,
3109 			binding.slot);
3110 
3111 	return ret;
3112 }
3113 
3114 static int vmw_cmd_indexed_instanced_indirect(struct vmw_private *dev_priv,
3115 					      struct vmw_sw_context *sw_context,
3116 					      SVGA3dCmdHeader *header)
3117 {
3118 	struct vmw_draw_indexed_instanced_indirect_cmd {
3119 		SVGA3dCmdHeader header;
3120 		SVGA3dCmdDXDrawIndexedInstancedIndirect body;
3121 	} *cmd = container_of(header, typeof(*cmd), header);
3122 
3123 	if (!has_sm5_context(dev_priv))
3124 		return -EINVAL;
3125 
3126 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
3127 				 VMW_RES_DIRTY_NONE, user_surface_converter,
3128 				 &cmd->body.argsBufferSid, NULL);
3129 }
3130 
3131 static int vmw_cmd_instanced_indirect(struct vmw_private *dev_priv,
3132 				      struct vmw_sw_context *sw_context,
3133 				      SVGA3dCmdHeader *header)
3134 {
3135 	struct vmw_draw_instanced_indirect_cmd {
3136 		SVGA3dCmdHeader header;
3137 		SVGA3dCmdDXDrawInstancedIndirect body;
3138 	} *cmd = container_of(header, typeof(*cmd), header);
3139 
3140 	if (!has_sm5_context(dev_priv))
3141 		return -EINVAL;
3142 
3143 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
3144 				 VMW_RES_DIRTY_NONE, user_surface_converter,
3145 				 &cmd->body.argsBufferSid, NULL);
3146 }
3147 
3148 static int vmw_cmd_dispatch_indirect(struct vmw_private *dev_priv,
3149 				     struct vmw_sw_context *sw_context,
3150 				     SVGA3dCmdHeader *header)
3151 {
3152 	struct vmw_dispatch_indirect_cmd {
3153 		SVGA3dCmdHeader header;
3154 		SVGA3dCmdDXDispatchIndirect body;
3155 	} *cmd = container_of(header, typeof(*cmd), header);
3156 
3157 	if (!has_sm5_context(dev_priv))
3158 		return -EINVAL;
3159 
3160 	return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
3161 				 VMW_RES_DIRTY_NONE, user_surface_converter,
3162 				 &cmd->body.argsBufferSid, NULL);
3163 }
3164 
3165 static int vmw_cmd_check_not_3d(struct vmw_private *dev_priv,
3166 				struct vmw_sw_context *sw_context,
3167 				void *buf, uint32_t *size)
3168 {
3169 	uint32_t size_remaining = *size;
3170 	uint32_t cmd_id;
3171 
3172 	cmd_id = ((uint32_t *)buf)[0];
3173 	switch (cmd_id) {
3174 	case SVGA_CMD_UPDATE:
3175 		*size = sizeof(uint32_t) + sizeof(SVGAFifoCmdUpdate);
3176 		break;
3177 	case SVGA_CMD_DEFINE_GMRFB:
3178 		*size = sizeof(uint32_t) + sizeof(SVGAFifoCmdDefineGMRFB);
3179 		break;
3180 	case SVGA_CMD_BLIT_GMRFB_TO_SCREEN:
3181 		*size = sizeof(uint32_t) + sizeof(SVGAFifoCmdBlitGMRFBToScreen);
3182 		break;
3183 	case SVGA_CMD_BLIT_SCREEN_TO_GMRFB:
3184 		*size = sizeof(uint32_t) + sizeof(SVGAFifoCmdBlitGMRFBToScreen);
3185 		break;
3186 	default:
3187 		VMW_DEBUG_USER("Unsupported SVGA command: %u.\n", cmd_id);
3188 		return -EINVAL;
3189 	}
3190 
3191 	if (*size > size_remaining) {
3192 		VMW_DEBUG_USER("Invalid SVGA command (size mismatch): %u.\n",
3193 			       cmd_id);
3194 		return -EINVAL;
3195 	}
3196 
3197 	if (unlikely(!sw_context->kernel)) {
3198 		VMW_DEBUG_USER("Kernel only SVGA command: %u.\n", cmd_id);
3199 		return -EPERM;
3200 	}
3201 
3202 	if (cmd_id == SVGA_CMD_DEFINE_GMRFB)
3203 		return vmw_cmd_check_define_gmrfb(dev_priv, sw_context, buf);
3204 
3205 	return 0;
3206 }
3207 
3208 static const struct vmw_cmd_entry vmw_cmd_entries[SVGA_3D_CMD_MAX] = {
3209 	VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DEFINE, &vmw_cmd_invalid,
3210 		    false, false, false),
3211 	VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DESTROY, &vmw_cmd_invalid,
3212 		    false, false, false),
3213 	VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_COPY, &vmw_cmd_surface_copy_check,
3214 		    true, false, false),
3215 	VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_STRETCHBLT, &vmw_cmd_stretch_blt_check,
3216 		    true, false, false),
3217 	VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DMA, &vmw_cmd_dma,
3218 		    true, false, false),
3219 	VMW_CMD_DEF(SVGA_3D_CMD_CONTEXT_DEFINE, &vmw_cmd_invalid,
3220 		    false, false, false),
3221 	VMW_CMD_DEF(SVGA_3D_CMD_CONTEXT_DESTROY, &vmw_cmd_invalid,
3222 		    false, false, false),
3223 	VMW_CMD_DEF(SVGA_3D_CMD_SETTRANSFORM, &vmw_cmd_cid_check,
3224 		    true, false, false),
3225 	VMW_CMD_DEF(SVGA_3D_CMD_SETZRANGE, &vmw_cmd_cid_check,
3226 		    true, false, false),
3227 	VMW_CMD_DEF(SVGA_3D_CMD_SETRENDERSTATE, &vmw_cmd_cid_check,
3228 		    true, false, false),
3229 	VMW_CMD_DEF(SVGA_3D_CMD_SETRENDERTARGET,
3230 		    &vmw_cmd_set_render_target_check, true, false, false),
3231 	VMW_CMD_DEF(SVGA_3D_CMD_SETTEXTURESTATE, &vmw_cmd_tex_state,
3232 		    true, false, false),
3233 	VMW_CMD_DEF(SVGA_3D_CMD_SETMATERIAL, &vmw_cmd_cid_check,
3234 		    true, false, false),
3235 	VMW_CMD_DEF(SVGA_3D_CMD_SETLIGHTDATA, &vmw_cmd_cid_check,
3236 		    true, false, false),
3237 	VMW_CMD_DEF(SVGA_3D_CMD_SETLIGHTENABLED, &vmw_cmd_cid_check,
3238 		    true, false, false),
3239 	VMW_CMD_DEF(SVGA_3D_CMD_SETVIEWPORT, &vmw_cmd_cid_check,
3240 		    true, false, false),
3241 	VMW_CMD_DEF(SVGA_3D_CMD_SETCLIPPLANE, &vmw_cmd_cid_check,
3242 		    true, false, false),
3243 	VMW_CMD_DEF(SVGA_3D_CMD_CLEAR, &vmw_cmd_cid_check,
3244 		    true, false, false),
3245 	VMW_CMD_DEF(SVGA_3D_CMD_PRESENT, &vmw_cmd_present_check,
3246 		    false, false, false),
3247 	VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DEFINE, &vmw_cmd_shader_define,
3248 		    true, false, false),
3249 	VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DESTROY, &vmw_cmd_shader_destroy,
3250 		    true, false, false),
3251 	VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER, &vmw_cmd_set_shader,
3252 		    true, false, false),
3253 	VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER_CONST, &vmw_cmd_set_shader_const,
3254 		    true, false, false),
3255 	VMW_CMD_DEF(SVGA_3D_CMD_DRAW_PRIMITIVES, &vmw_cmd_draw,
3256 		    true, false, false),
3257 	VMW_CMD_DEF(SVGA_3D_CMD_SETSCISSORRECT, &vmw_cmd_cid_check,
3258 		    true, false, false),
3259 	VMW_CMD_DEF(SVGA_3D_CMD_BEGIN_QUERY, &vmw_cmd_begin_query,
3260 		    true, false, false),
3261 	VMW_CMD_DEF(SVGA_3D_CMD_END_QUERY, &vmw_cmd_end_query,
3262 		    true, false, false),
3263 	VMW_CMD_DEF(SVGA_3D_CMD_WAIT_FOR_QUERY, &vmw_cmd_wait_query,
3264 		    true, false, false),
3265 	VMW_CMD_DEF(SVGA_3D_CMD_PRESENT_READBACK, &vmw_cmd_ok,
3266 		    true, false, false),
3267 	VMW_CMD_DEF(SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN,
3268 		    &vmw_cmd_blt_surf_screen_check, false, false, false),
3269 	VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DEFINE_V2, &vmw_cmd_invalid,
3270 		    false, false, false),
3271 	VMW_CMD_DEF(SVGA_3D_CMD_GENERATE_MIPMAPS, &vmw_cmd_invalid,
3272 		    false, false, false),
3273 	VMW_CMD_DEF(SVGA_3D_CMD_ACTIVATE_SURFACE, &vmw_cmd_invalid,
3274 		    false, false, false),
3275 	VMW_CMD_DEF(SVGA_3D_CMD_DEACTIVATE_SURFACE, &vmw_cmd_invalid,
3276 		    false, false, false),
3277 	VMW_CMD_DEF(SVGA_3D_CMD_SCREEN_DMA, &vmw_cmd_invalid,
3278 		    false, false, false),
3279 	VMW_CMD_DEF(SVGA_3D_CMD_DEAD1, &vmw_cmd_invalid,
3280 		    false, false, false),
3281 	VMW_CMD_DEF(SVGA_3D_CMD_DEAD2, &vmw_cmd_invalid,
3282 		    false, false, false),
3283 	VMW_CMD_DEF(SVGA_3D_CMD_DEAD12, &vmw_cmd_invalid, false, false, false),
3284 	VMW_CMD_DEF(SVGA_3D_CMD_DEAD13, &vmw_cmd_invalid, false, false, false),
3285 	VMW_CMD_DEF(SVGA_3D_CMD_DEAD14, &vmw_cmd_invalid, false, false, false),
3286 	VMW_CMD_DEF(SVGA_3D_CMD_DEAD15, &vmw_cmd_invalid, false, false, false),
3287 	VMW_CMD_DEF(SVGA_3D_CMD_DEAD16, &vmw_cmd_invalid, false, false, false),
3288 	VMW_CMD_DEF(SVGA_3D_CMD_DEAD17, &vmw_cmd_invalid, false, false, false),
3289 	VMW_CMD_DEF(SVGA_3D_CMD_SET_OTABLE_BASE, &vmw_cmd_invalid,
3290 		    false, false, true),
3291 	VMW_CMD_DEF(SVGA_3D_CMD_READBACK_OTABLE, &vmw_cmd_invalid,
3292 		    false, false, true),
3293 	VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_MOB, &vmw_cmd_invalid,
3294 		    false, false, true),
3295 	VMW_CMD_DEF(SVGA_3D_CMD_DESTROY_GB_MOB, &vmw_cmd_invalid,
3296 		    false, false, true),
3297 	VMW_CMD_DEF(SVGA_3D_CMD_REDEFINE_GB_MOB64, &vmw_cmd_invalid,
3298 		    false, false, true),
3299 	VMW_CMD_DEF(SVGA_3D_CMD_UPDATE_GB_MOB_MAPPING, &vmw_cmd_invalid,
3300 		    false, false, true),
3301 	VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_SURFACE, &vmw_cmd_invalid,
3302 		    false, false, true),
3303 	VMW_CMD_DEF(SVGA_3D_CMD_DESTROY_GB_SURFACE, &vmw_cmd_invalid,
3304 		    false, false, true),
3305 	VMW_CMD_DEF(SVGA_3D_CMD_BIND_GB_SURFACE, &vmw_cmd_bind_gb_surface,
3306 		    true, false, true),
3307 	VMW_CMD_DEF(SVGA_3D_CMD_COND_BIND_GB_SURFACE, &vmw_cmd_invalid,
3308 		    false, false, true),
3309 	VMW_CMD_DEF(SVGA_3D_CMD_UPDATE_GB_IMAGE, &vmw_cmd_update_gb_image,
3310 		    true, false, true),
3311 	VMW_CMD_DEF(SVGA_3D_CMD_UPDATE_GB_SURFACE,
3312 		    &vmw_cmd_update_gb_surface, true, false, true),
3313 	VMW_CMD_DEF(SVGA_3D_CMD_READBACK_GB_IMAGE,
3314 		    &vmw_cmd_readback_gb_image, true, false, true),
3315 	VMW_CMD_DEF(SVGA_3D_CMD_READBACK_GB_SURFACE,
3316 		    &vmw_cmd_readback_gb_surface, true, false, true),
3317 	VMW_CMD_DEF(SVGA_3D_CMD_INVALIDATE_GB_IMAGE,
3318 		    &vmw_cmd_invalidate_gb_image, true, false, true),
3319 	VMW_CMD_DEF(SVGA_3D_CMD_INVALIDATE_GB_SURFACE,
3320 		    &vmw_cmd_invalidate_gb_surface, true, false, true),
3321 	VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_CONTEXT, &vmw_cmd_invalid,
3322 		    false, false, true),
3323 	VMW_CMD_DEF(SVGA_3D_CMD_DESTROY_GB_CONTEXT, &vmw_cmd_invalid,
3324 		    false, false, true),
3325 	VMW_CMD_DEF(SVGA_3D_CMD_BIND_GB_CONTEXT, &vmw_cmd_invalid,
3326 		    false, false, true),
3327 	VMW_CMD_DEF(SVGA_3D_CMD_READBACK_GB_CONTEXT, &vmw_cmd_invalid,
3328 		    false, false, true),
3329 	VMW_CMD_DEF(SVGA_3D_CMD_INVALIDATE_GB_CONTEXT, &vmw_cmd_invalid,
3330 		    false, false, true),
3331 	VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_SHADER, &vmw_cmd_invalid,
3332 		    false, false, true),
3333 	VMW_CMD_DEF(SVGA_3D_CMD_BIND_GB_SHADER, &vmw_cmd_bind_gb_shader,
3334 		    true, false, true),
3335 	VMW_CMD_DEF(SVGA_3D_CMD_DESTROY_GB_SHADER, &vmw_cmd_invalid,
3336 		    false, false, true),
3337 	VMW_CMD_DEF(SVGA_3D_CMD_SET_OTABLE_BASE64, &vmw_cmd_invalid,
3338 		    false, false, false),
3339 	VMW_CMD_DEF(SVGA_3D_CMD_BEGIN_GB_QUERY, &vmw_cmd_begin_gb_query,
3340 		    true, false, true),
3341 	VMW_CMD_DEF(SVGA_3D_CMD_END_GB_QUERY, &vmw_cmd_end_gb_query,
3342 		    true, false, true),
3343 	VMW_CMD_DEF(SVGA_3D_CMD_WAIT_FOR_GB_QUERY, &vmw_cmd_wait_gb_query,
3344 		    true, false, true),
3345 	VMW_CMD_DEF(SVGA_3D_CMD_NOP, &vmw_cmd_ok,
3346 		    true, false, true),
3347 	VMW_CMD_DEF(SVGA_3D_CMD_NOP_ERROR, &vmw_cmd_ok,
3348 		    true, false, true),
3349 	VMW_CMD_DEF(SVGA_3D_CMD_ENABLE_GART, &vmw_cmd_invalid,
3350 		    false, false, true),
3351 	VMW_CMD_DEF(SVGA_3D_CMD_DISABLE_GART, &vmw_cmd_invalid,
3352 		    false, false, true),
3353 	VMW_CMD_DEF(SVGA_3D_CMD_MAP_MOB_INTO_GART, &vmw_cmd_invalid,
3354 		    false, false, true),
3355 	VMW_CMD_DEF(SVGA_3D_CMD_UNMAP_GART_RANGE, &vmw_cmd_invalid,
3356 		    false, false, true),
3357 	VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_SCREENTARGET, &vmw_cmd_invalid,
3358 		    false, false, true),
3359 	VMW_CMD_DEF(SVGA_3D_CMD_DESTROY_GB_SCREENTARGET, &vmw_cmd_invalid,
3360 		    false, false, true),
3361 	VMW_CMD_DEF(SVGA_3D_CMD_BIND_GB_SCREENTARGET, &vmw_cmd_invalid,
3362 		    false, false, true),
3363 	VMW_CMD_DEF(SVGA_3D_CMD_UPDATE_GB_SCREENTARGET, &vmw_cmd_invalid,
3364 		    false, false, true),
3365 	VMW_CMD_DEF(SVGA_3D_CMD_READBACK_GB_IMAGE_PARTIAL, &vmw_cmd_invalid,
3366 		    false, false, true),
3367 	VMW_CMD_DEF(SVGA_3D_CMD_INVALIDATE_GB_IMAGE_PARTIAL, &vmw_cmd_invalid,
3368 		    false, false, true),
3369 	VMW_CMD_DEF(SVGA_3D_CMD_SET_GB_SHADERCONSTS_INLINE, &vmw_cmd_cid_check,
3370 		    true, false, true),
3371 	VMW_CMD_DEF(SVGA_3D_CMD_GB_SCREEN_DMA, &vmw_cmd_invalid,
3372 		    false, false, true),
3373 	VMW_CMD_DEF(SVGA_3D_CMD_BIND_GB_SURFACE_WITH_PITCH, &vmw_cmd_invalid,
3374 		    false, false, true),
3375 	VMW_CMD_DEF(SVGA_3D_CMD_GB_MOB_FENCE, &vmw_cmd_invalid,
3376 		    false, false, true),
3377 	VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_SURFACE_V2, &vmw_cmd_invalid,
3378 		    false, false, true),
3379 
3380 	/* SM commands */
3381 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_CONTEXT, &vmw_cmd_invalid,
3382 		    false, false, true),
3383 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_CONTEXT, &vmw_cmd_invalid,
3384 		    false, false, true),
3385 	VMW_CMD_DEF(SVGA_3D_CMD_DX_BIND_CONTEXT, &vmw_cmd_invalid,
3386 		    false, false, true),
3387 	VMW_CMD_DEF(SVGA_3D_CMD_DX_READBACK_CONTEXT, &vmw_cmd_invalid,
3388 		    false, false, true),
3389 	VMW_CMD_DEF(SVGA_3D_CMD_DX_INVALIDATE_CONTEXT, &vmw_cmd_invalid,
3390 		    false, false, true),
3391 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_SINGLE_CONSTANT_BUFFER,
3392 		    &vmw_cmd_dx_set_single_constant_buffer, true, false, true),
3393 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_SHADER_RESOURCES,
3394 		    &vmw_cmd_dx_set_shader_res, true, false, true),
3395 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_SHADER, &vmw_cmd_dx_set_shader,
3396 		    true, false, true),
3397 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_SAMPLERS, &vmw_cmd_dx_cid_check,
3398 		    true, false, true),
3399 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DRAW, &vmw_cmd_dx_cid_check,
3400 		    true, false, true),
3401 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DRAW_INDEXED, &vmw_cmd_dx_cid_check,
3402 		    true, false, true),
3403 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DRAW_INSTANCED, &vmw_cmd_dx_cid_check,
3404 		    true, false, true),
3405 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DRAW_INDEXED_INSTANCED,
3406 		    &vmw_cmd_dx_cid_check, true, false, true),
3407 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DRAW_AUTO, &vmw_cmd_dx_cid_check,
3408 		    true, false, true),
3409 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_VERTEX_BUFFERS,
3410 		    &vmw_cmd_dx_set_vertex_buffers, true, false, true),
3411 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_INDEX_BUFFER,
3412 		    &vmw_cmd_dx_set_index_buffer, true, false, true),
3413 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_RENDERTARGETS,
3414 		    &vmw_cmd_dx_set_rendertargets, true, false, true),
3415 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_BLEND_STATE, &vmw_cmd_dx_cid_check,
3416 		    true, false, true),
3417 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_DEPTHSTENCIL_STATE,
3418 		    &vmw_cmd_dx_cid_check, true, false, true),
3419 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_RASTERIZER_STATE,
3420 		    &vmw_cmd_dx_cid_check, true, false, true),
3421 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_QUERY, &vmw_cmd_dx_define_query,
3422 		    true, false, true),
3423 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_QUERY, &vmw_cmd_dx_cid_check,
3424 		    true, false, true),
3425 	VMW_CMD_DEF(SVGA_3D_CMD_DX_BIND_QUERY, &vmw_cmd_dx_bind_query,
3426 		    true, false, true),
3427 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_QUERY_OFFSET,
3428 		    &vmw_cmd_dx_cid_check, true, false, true),
3429 	VMW_CMD_DEF(SVGA_3D_CMD_DX_BEGIN_QUERY, &vmw_cmd_dx_cid_check,
3430 		    true, false, true),
3431 	VMW_CMD_DEF(SVGA_3D_CMD_DX_END_QUERY, &vmw_cmd_dx_cid_check,
3432 		    true, false, true),
3433 	VMW_CMD_DEF(SVGA_3D_CMD_DX_READBACK_QUERY, &vmw_cmd_invalid,
3434 		    true, false, true),
3435 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_PREDICATION, &vmw_cmd_dx_cid_check,
3436 		    true, false, true),
3437 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_VIEWPORTS, &vmw_cmd_dx_cid_check,
3438 		    true, false, true),
3439 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_SCISSORRECTS, &vmw_cmd_dx_cid_check,
3440 		    true, false, true),
3441 	VMW_CMD_DEF(SVGA_3D_CMD_DX_CLEAR_RENDERTARGET_VIEW,
3442 		    &vmw_cmd_dx_clear_rendertarget_view, true, false, true),
3443 	VMW_CMD_DEF(SVGA_3D_CMD_DX_CLEAR_DEPTHSTENCIL_VIEW,
3444 		    &vmw_cmd_dx_clear_depthstencil_view, true, false, true),
3445 	VMW_CMD_DEF(SVGA_3D_CMD_DX_PRED_COPY, &vmw_cmd_invalid,
3446 		    true, false, true),
3447 	VMW_CMD_DEF(SVGA_3D_CMD_DX_GENMIPS, &vmw_cmd_dx_genmips,
3448 		    true, false, true),
3449 	VMW_CMD_DEF(SVGA_3D_CMD_DX_UPDATE_SUBRESOURCE,
3450 		    &vmw_cmd_dx_check_subresource, true, false, true),
3451 	VMW_CMD_DEF(SVGA_3D_CMD_DX_READBACK_SUBRESOURCE,
3452 		    &vmw_cmd_dx_check_subresource, true, false, true),
3453 	VMW_CMD_DEF(SVGA_3D_CMD_DX_INVALIDATE_SUBRESOURCE,
3454 		    &vmw_cmd_dx_check_subresource, true, false, true),
3455 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_SHADERRESOURCE_VIEW,
3456 		    &vmw_cmd_dx_view_define, true, false, true),
3457 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_SHADERRESOURCE_VIEW,
3458 		    &vmw_cmd_dx_view_remove, true, false, true),
3459 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_RENDERTARGET_VIEW,
3460 		    &vmw_cmd_dx_view_define, true, false, true),
3461 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_RENDERTARGET_VIEW,
3462 		    &vmw_cmd_dx_view_remove, true, false, true),
3463 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_DEPTHSTENCIL_VIEW,
3464 		    &vmw_cmd_dx_view_define, true, false, true),
3465 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_DEPTHSTENCIL_VIEW,
3466 		    &vmw_cmd_dx_view_remove, true, false, true),
3467 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_ELEMENTLAYOUT,
3468 		    &vmw_cmd_dx_so_define, true, false, true),
3469 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_ELEMENTLAYOUT,
3470 		    &vmw_cmd_dx_cid_check, true, false, true),
3471 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_BLEND_STATE,
3472 		    &vmw_cmd_dx_so_define, true, false, true),
3473 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_BLEND_STATE,
3474 		    &vmw_cmd_dx_cid_check, true, false, true),
3475 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_DEPTHSTENCIL_STATE,
3476 		    &vmw_cmd_dx_so_define, true, false, true),
3477 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_DEPTHSTENCIL_STATE,
3478 		    &vmw_cmd_dx_cid_check, true, false, true),
3479 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_RASTERIZER_STATE,
3480 		    &vmw_cmd_dx_so_define, true, false, true),
3481 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_RASTERIZER_STATE,
3482 		    &vmw_cmd_dx_cid_check, true, false, true),
3483 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_SAMPLER_STATE,
3484 		    &vmw_cmd_dx_so_define, true, false, true),
3485 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_SAMPLER_STATE,
3486 		    &vmw_cmd_dx_cid_check, true, false, true),
3487 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_SHADER,
3488 		    &vmw_cmd_dx_define_shader, true, false, true),
3489 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_SHADER,
3490 		    &vmw_cmd_dx_destroy_shader, true, false, true),
3491 	VMW_CMD_DEF(SVGA_3D_CMD_DX_BIND_SHADER,
3492 		    &vmw_cmd_dx_bind_shader, true, false, true),
3493 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_STREAMOUTPUT,
3494 		    &vmw_cmd_dx_so_define, true, false, true),
3495 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_STREAMOUTPUT,
3496 		    &vmw_cmd_dx_destroy_streamoutput, true, false, true),
3497 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_STREAMOUTPUT,
3498 		    &vmw_cmd_dx_set_streamoutput, true, false, true),
3499 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_SOTARGETS,
3500 		    &vmw_cmd_dx_set_so_targets, true, false, true),
3501 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_INPUT_LAYOUT,
3502 		    &vmw_cmd_dx_cid_check, true, false, true),
3503 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_TOPOLOGY,
3504 		    &vmw_cmd_dx_cid_check, true, false, true),
3505 	VMW_CMD_DEF(SVGA_3D_CMD_DX_BUFFER_COPY,
3506 		    &vmw_cmd_buffer_copy_check, true, false, true),
3507 	VMW_CMD_DEF(SVGA_3D_CMD_DX_PRED_COPY_REGION,
3508 		    &vmw_cmd_pred_copy_check, true, false, true),
3509 	VMW_CMD_DEF(SVGA_3D_CMD_DX_TRANSFER_FROM_BUFFER,
3510 		    &vmw_cmd_dx_transfer_from_buffer,
3511 		    true, false, true),
3512 	VMW_CMD_DEF(SVGA_3D_CMD_INTRA_SURFACE_COPY, &vmw_cmd_intra_surface_copy,
3513 		    true, false, true),
3514 
3515 	/*
3516 	 * SM5 commands
3517 	 */
3518 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_UA_VIEW, &vmw_cmd_sm5_view_define,
3519 		    true, false, true),
3520 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_UA_VIEW, &vmw_cmd_sm5_view_remove,
3521 		    true, false, true),
3522 	VMW_CMD_DEF(SVGA_3D_CMD_DX_CLEAR_UA_VIEW_UINT, &vmw_cmd_clear_uav_uint,
3523 		    true, false, true),
3524 	VMW_CMD_DEF(SVGA_3D_CMD_DX_CLEAR_UA_VIEW_FLOAT,
3525 		    &vmw_cmd_clear_uav_float, true, false, true),
3526 	VMW_CMD_DEF(SVGA_3D_CMD_DX_COPY_STRUCTURE_COUNT, &vmw_cmd_invalid, true,
3527 		    false, true),
3528 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_UA_VIEWS, &vmw_cmd_set_uav, true, false,
3529 		    true),
3530 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DRAW_INDEXED_INSTANCED_INDIRECT,
3531 		    &vmw_cmd_indexed_instanced_indirect, true, false, true),
3532 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DRAW_INSTANCED_INDIRECT,
3533 		    &vmw_cmd_instanced_indirect, true, false, true),
3534 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DISPATCH, &vmw_cmd_sm5, true, false, true),
3535 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DISPATCH_INDIRECT,
3536 		    &vmw_cmd_dispatch_indirect, true, false, true),
3537 	VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_CS_UA_VIEWS, &vmw_cmd_set_cs_uav, true,
3538 		    false, true),
3539 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_DEPTHSTENCIL_VIEW_V2,
3540 		    &vmw_cmd_sm5_view_define, true, false, true),
3541 	VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_STREAMOUTPUT_WITH_MOB,
3542 		    &vmw_cmd_dx_define_streamoutput, true, false, true),
3543 	VMW_CMD_DEF(SVGA_3D_CMD_DX_BIND_STREAMOUTPUT,
3544 		    &vmw_cmd_dx_bind_streamoutput, true, false, true),
3545 };
3546 
3547 bool vmw_cmd_describe(const void *buf, u32 *size, char const **cmd)
3548 {
3549 	u32 cmd_id = ((u32 *) buf)[0];
3550 
3551 	if (cmd_id >= SVGA_CMD_MAX) {
3552 		SVGA3dCmdHeader *header = (SVGA3dCmdHeader *) buf;
3553 		const struct vmw_cmd_entry *entry;
3554 
3555 		*size = header->size + sizeof(SVGA3dCmdHeader);
3556 		cmd_id = header->id;
3557 		if (cmd_id >= SVGA_3D_CMD_MAX)
3558 			return false;
3559 
3560 		cmd_id -= SVGA_3D_CMD_BASE;
3561 		entry = &vmw_cmd_entries[cmd_id];
3562 		*cmd = entry->cmd_name;
3563 		return true;
3564 	}
3565 
3566 	switch (cmd_id) {
3567 	case SVGA_CMD_UPDATE:
3568 		*cmd = "SVGA_CMD_UPDATE";
3569 		*size = sizeof(u32) + sizeof(SVGAFifoCmdUpdate);
3570 		break;
3571 	case SVGA_CMD_DEFINE_GMRFB:
3572 		*cmd = "SVGA_CMD_DEFINE_GMRFB";
3573 		*size = sizeof(u32) + sizeof(SVGAFifoCmdDefineGMRFB);
3574 		break;
3575 	case SVGA_CMD_BLIT_GMRFB_TO_SCREEN:
3576 		*cmd = "SVGA_CMD_BLIT_GMRFB_TO_SCREEN";
3577 		*size = sizeof(u32) + sizeof(SVGAFifoCmdBlitGMRFBToScreen);
3578 		break;
3579 	case SVGA_CMD_BLIT_SCREEN_TO_GMRFB:
3580 		*cmd = "SVGA_CMD_BLIT_SCREEN_TO_GMRFB";
3581 		*size = sizeof(u32) + sizeof(SVGAFifoCmdBlitGMRFBToScreen);
3582 		break;
3583 	default:
3584 		*cmd = "UNKNOWN";
3585 		*size = 0;
3586 		return false;
3587 	}
3588 
3589 	return true;
3590 }
3591 
3592 static int vmw_cmd_check(struct vmw_private *dev_priv,
3593 			 struct vmw_sw_context *sw_context, void *buf,
3594 			 uint32_t *size)
3595 {
3596 	uint32_t cmd_id;
3597 	uint32_t size_remaining = *size;
3598 	SVGA3dCmdHeader *header = (SVGA3dCmdHeader *) buf;
3599 	int ret;
3600 	const struct vmw_cmd_entry *entry;
3601 	bool gb = dev_priv->capabilities & SVGA_CAP_GBOBJECTS;
3602 
3603 	cmd_id = ((uint32_t *)buf)[0];
3604 	/* Handle any none 3D commands */
3605 	if (unlikely(cmd_id < SVGA_CMD_MAX))
3606 		return vmw_cmd_check_not_3d(dev_priv, sw_context, buf, size);
3607 
3608 
3609 	cmd_id = header->id;
3610 	*size = header->size + sizeof(SVGA3dCmdHeader);
3611 
3612 	cmd_id -= SVGA_3D_CMD_BASE;
3613 	if (unlikely(*size > size_remaining))
3614 		goto out_invalid;
3615 
3616 	if (unlikely(cmd_id >= SVGA_3D_CMD_MAX - SVGA_3D_CMD_BASE))
3617 		goto out_invalid;
3618 
3619 	entry = &vmw_cmd_entries[cmd_id];
3620 	if (unlikely(!entry->func))
3621 		goto out_invalid;
3622 
3623 	if (unlikely(!entry->user_allow && !sw_context->kernel))
3624 		goto out_privileged;
3625 
3626 	if (unlikely(entry->gb_disable && gb))
3627 		goto out_old;
3628 
3629 	if (unlikely(entry->gb_enable && !gb))
3630 		goto out_new;
3631 
3632 	ret = entry->func(dev_priv, sw_context, header);
3633 	if (unlikely(ret != 0)) {
3634 		VMW_DEBUG_USER("SVGA3D command: %d failed with error %d\n",
3635 			       cmd_id + SVGA_3D_CMD_BASE, ret);
3636 		return ret;
3637 	}
3638 
3639 	return 0;
3640 out_invalid:
3641 	VMW_DEBUG_USER("Invalid SVGA3D command: %d\n",
3642 		       cmd_id + SVGA_3D_CMD_BASE);
3643 	return -EINVAL;
3644 out_privileged:
3645 	VMW_DEBUG_USER("Privileged SVGA3D command: %d\n",
3646 		       cmd_id + SVGA_3D_CMD_BASE);
3647 	return -EPERM;
3648 out_old:
3649 	VMW_DEBUG_USER("Deprecated (disallowed) SVGA3D command: %d\n",
3650 		       cmd_id + SVGA_3D_CMD_BASE);
3651 	return -EINVAL;
3652 out_new:
3653 	VMW_DEBUG_USER("SVGA3D command: %d not supported by virtual device.\n",
3654 		       cmd_id + SVGA_3D_CMD_BASE);
3655 	return -EINVAL;
3656 }
3657 
3658 static int vmw_cmd_check_all(struct vmw_private *dev_priv,
3659 			     struct vmw_sw_context *sw_context, void *buf,
3660 			     uint32_t size)
3661 {
3662 	int32_t cur_size = size;
3663 	int ret;
3664 
3665 	sw_context->buf_start = buf;
3666 
3667 	while (cur_size > 0) {
3668 		size = cur_size;
3669 		ret = vmw_cmd_check(dev_priv, sw_context, buf, &size);
3670 		if (unlikely(ret != 0))
3671 			return ret;
3672 		buf = (void *)((unsigned long) buf + size);
3673 		cur_size -= size;
3674 	}
3675 
3676 	if (unlikely(cur_size != 0)) {
3677 		VMW_DEBUG_USER("Command verifier out of sync.\n");
3678 		return -EINVAL;
3679 	}
3680 
3681 	return 0;
3682 }
3683 
3684 static void vmw_free_relocations(struct vmw_sw_context *sw_context)
3685 {
3686 	/* Memory is validation context memory, so no need to free it */
3687 	INIT_LIST_HEAD(&sw_context->bo_relocations);
3688 }
3689 
3690 static void vmw_apply_relocations(struct vmw_sw_context *sw_context)
3691 {
3692 	struct vmw_relocation *reloc;
3693 	struct ttm_buffer_object *bo;
3694 
3695 	list_for_each_entry(reloc, &sw_context->bo_relocations, head) {
3696 		bo = &reloc->vbo->base;
3697 		switch (bo->mem.mem_type) {
3698 		case TTM_PL_VRAM:
3699 			reloc->location->offset += bo->mem.start << PAGE_SHIFT;
3700 			reloc->location->gmrId = SVGA_GMR_FRAMEBUFFER;
3701 			break;
3702 		case VMW_PL_GMR:
3703 			reloc->location->gmrId = bo->mem.start;
3704 			break;
3705 		case VMW_PL_MOB:
3706 			*reloc->mob_loc = bo->mem.start;
3707 			break;
3708 		default:
3709 			BUG();
3710 		}
3711 	}
3712 	vmw_free_relocations(sw_context);
3713 }
3714 
3715 static int vmw_resize_cmd_bounce(struct vmw_sw_context *sw_context,
3716 				 uint32_t size)
3717 {
3718 	if (likely(sw_context->cmd_bounce_size >= size))
3719 		return 0;
3720 
3721 	if (sw_context->cmd_bounce_size == 0)
3722 		sw_context->cmd_bounce_size = VMWGFX_CMD_BOUNCE_INIT_SIZE;
3723 
3724 	while (sw_context->cmd_bounce_size < size) {
3725 		sw_context->cmd_bounce_size =
3726 			PAGE_ALIGN(sw_context->cmd_bounce_size +
3727 				   (sw_context->cmd_bounce_size >> 1));
3728 	}
3729 
3730 	vfree(sw_context->cmd_bounce);
3731 	sw_context->cmd_bounce = vmalloc(sw_context->cmd_bounce_size);
3732 
3733 	if (sw_context->cmd_bounce == NULL) {
3734 		VMW_DEBUG_USER("Failed to allocate command bounce buffer.\n");
3735 		sw_context->cmd_bounce_size = 0;
3736 		return -ENOMEM;
3737 	}
3738 
3739 	return 0;
3740 }
3741 
3742 /**
3743  * vmw_execbuf_fence_commands - create and submit a command stream fence
3744  *
3745  * Creates a fence object and submits a command stream marker.
3746  * If this fails for some reason, We sync the fifo and return NULL.
3747  * It is then safe to fence buffers with a NULL pointer.
3748  *
3749  * If @p_handle is not NULL @file_priv must also not be NULL. Creates a
3750  * userspace handle if @p_handle is not NULL, otherwise not.
3751  */
3752 
3753 int vmw_execbuf_fence_commands(struct drm_file *file_priv,
3754 			       struct vmw_private *dev_priv,
3755 			       struct vmw_fence_obj **p_fence,
3756 			       uint32_t *p_handle)
3757 {
3758 	uint32_t sequence;
3759 	int ret;
3760 	bool synced = false;
3761 
3762 	/* p_handle implies file_priv. */
3763 	BUG_ON(p_handle != NULL && file_priv == NULL);
3764 
3765 	ret = vmw_fifo_send_fence(dev_priv, &sequence);
3766 	if (unlikely(ret != 0)) {
3767 		VMW_DEBUG_USER("Fence submission error. Syncing.\n");
3768 		synced = true;
3769 	}
3770 
3771 	if (p_handle != NULL)
3772 		ret = vmw_user_fence_create(file_priv, dev_priv->fman,
3773 					    sequence, p_fence, p_handle);
3774 	else
3775 		ret = vmw_fence_create(dev_priv->fman, sequence, p_fence);
3776 
3777 	if (unlikely(ret != 0 && !synced)) {
3778 		(void) vmw_fallback_wait(dev_priv, false, false, sequence,
3779 					 false, VMW_FENCE_WAIT_TIMEOUT);
3780 		*p_fence = NULL;
3781 	}
3782 
3783 	return ret;
3784 }
3785 
3786 /**
3787  * vmw_execbuf_copy_fence_user - copy fence object information to user-space.
3788  *
3789  * @dev_priv: Pointer to a vmw_private struct.
3790  * @vmw_fp: Pointer to the struct vmw_fpriv representing the calling file.
3791  * @ret: Return value from fence object creation.
3792  * @user_fence_rep: User space address of a struct drm_vmw_fence_rep to which
3793  * the information should be copied.
3794  * @fence: Pointer to the fenc object.
3795  * @fence_handle: User-space fence handle.
3796  * @out_fence_fd: exported file descriptor for the fence.  -1 if not used
3797  * @sync_file:  Only used to clean up in case of an error in this function.
3798  *
3799  * This function copies fence information to user-space. If copying fails, the
3800  * user-space struct drm_vmw_fence_rep::error member is hopefully left
3801  * untouched, and if it's preloaded with an -EFAULT by user-space, the error
3802  * will hopefully be detected.
3803  *
3804  * Also if copying fails, user-space will be unable to signal the fence object
3805  * so we wait for it immediately, and then unreference the user-space reference.
3806  */
3807 void
3808 vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv,
3809 			    struct vmw_fpriv *vmw_fp, int ret,
3810 			    struct drm_vmw_fence_rep __user *user_fence_rep,
3811 			    struct vmw_fence_obj *fence, uint32_t fence_handle,
3812 			    int32_t out_fence_fd, struct sync_file *sync_file)
3813 {
3814 	struct drm_vmw_fence_rep fence_rep;
3815 
3816 	if (user_fence_rep == NULL)
3817 		return;
3818 
3819 	memset(&fence_rep, 0, sizeof(fence_rep));
3820 
3821 	fence_rep.error = ret;
3822 	fence_rep.fd = out_fence_fd;
3823 	if (ret == 0) {
3824 		BUG_ON(fence == NULL);
3825 
3826 		fence_rep.handle = fence_handle;
3827 		fence_rep.seqno = fence->base.seqno;
3828 		vmw_update_seqno(dev_priv, &dev_priv->fifo);
3829 		fence_rep.passed_seqno = dev_priv->last_read_seqno;
3830 	}
3831 
3832 	/*
3833 	 * copy_to_user errors will be detected by user space not seeing
3834 	 * fence_rep::error filled in. Typically user-space would have pre-set
3835 	 * that member to -EFAULT.
3836 	 */
3837 	ret = copy_to_user(user_fence_rep, &fence_rep,
3838 			   sizeof(fence_rep));
3839 
3840 	/*
3841 	 * User-space lost the fence object. We need to sync and unreference the
3842 	 * handle.
3843 	 */
3844 	if (unlikely(ret != 0) && (fence_rep.error == 0)) {
3845 		if (sync_file)
3846 			fput(sync_file->file);
3847 
3848 		if (fence_rep.fd != -1) {
3849 			put_unused_fd(fence_rep.fd);
3850 			fence_rep.fd = -1;
3851 		}
3852 
3853 		ttm_ref_object_base_unref(vmw_fp->tfile, fence_handle,
3854 					  TTM_REF_USAGE);
3855 		VMW_DEBUG_USER("Fence copy error. Syncing.\n");
3856 		(void) vmw_fence_obj_wait(fence, false, false,
3857 					  VMW_FENCE_WAIT_TIMEOUT);
3858 	}
3859 }
3860 
3861 /**
3862  * vmw_execbuf_submit_fifo - Patch a command batch and submit it using the fifo.
3863  *
3864  * @dev_priv: Pointer to a device private structure.
3865  * @kernel_commands: Pointer to the unpatched command batch.
3866  * @command_size: Size of the unpatched command batch.
3867  * @sw_context: Structure holding the relocation lists.
3868  *
3869  * Side effects: If this function returns 0, then the command batch pointed to
3870  * by @kernel_commands will have been modified.
3871  */
3872 static int vmw_execbuf_submit_fifo(struct vmw_private *dev_priv,
3873 				   void *kernel_commands, u32 command_size,
3874 				   struct vmw_sw_context *sw_context)
3875 {
3876 	void *cmd;
3877 
3878 	if (sw_context->dx_ctx_node)
3879 		cmd = VMW_FIFO_RESERVE_DX(dev_priv, command_size,
3880 					  sw_context->dx_ctx_node->ctx->id);
3881 	else
3882 		cmd = VMW_FIFO_RESERVE(dev_priv, command_size);
3883 
3884 	if (!cmd)
3885 		return -ENOMEM;
3886 
3887 	vmw_apply_relocations(sw_context);
3888 	memcpy(cmd, kernel_commands, command_size);
3889 	vmw_resource_relocations_apply(cmd, &sw_context->res_relocations);
3890 	vmw_resource_relocations_free(&sw_context->res_relocations);
3891 	vmw_fifo_commit(dev_priv, command_size);
3892 
3893 	return 0;
3894 }
3895 
3896 /**
3897  * vmw_execbuf_submit_cmdbuf - Patch a command batch and submit it using the
3898  * command buffer manager.
3899  *
3900  * @dev_priv: Pointer to a device private structure.
3901  * @header: Opaque handle to the command buffer allocation.
3902  * @command_size: Size of the unpatched command batch.
3903  * @sw_context: Structure holding the relocation lists.
3904  *
3905  * Side effects: If this function returns 0, then the command buffer represented
3906  * by @header will have been modified.
3907  */
3908 static int vmw_execbuf_submit_cmdbuf(struct vmw_private *dev_priv,
3909 				     struct vmw_cmdbuf_header *header,
3910 				     u32 command_size,
3911 				     struct vmw_sw_context *sw_context)
3912 {
3913 	u32 id = ((sw_context->dx_ctx_node) ? sw_context->dx_ctx_node->ctx->id :
3914 		  SVGA3D_INVALID_ID);
3915 	void *cmd = vmw_cmdbuf_reserve(dev_priv->cman, command_size, id, false,
3916 				       header);
3917 
3918 	vmw_apply_relocations(sw_context);
3919 	vmw_resource_relocations_apply(cmd, &sw_context->res_relocations);
3920 	vmw_resource_relocations_free(&sw_context->res_relocations);
3921 	vmw_cmdbuf_commit(dev_priv->cman, command_size, header, false);
3922 
3923 	return 0;
3924 }
3925 
3926 /**
3927  * vmw_execbuf_cmdbuf - Prepare, if possible, a user-space command batch for
3928  * submission using a command buffer.
3929  *
3930  * @dev_priv: Pointer to a device private structure.
3931  * @user_commands: User-space pointer to the commands to be submitted.
3932  * @command_size: Size of the unpatched command batch.
3933  * @header: Out parameter returning the opaque pointer to the command buffer.
3934  *
3935  * This function checks whether we can use the command buffer manager for
3936  * submission and if so, creates a command buffer of suitable size and copies
3937  * the user data into that buffer.
3938  *
3939  * On successful return, the function returns a pointer to the data in the
3940  * command buffer and *@header is set to non-NULL.
3941  *
3942  * If command buffers could not be used, the function will return the value of
3943  * @kernel_commands on function call. That value may be NULL. In that case, the
3944  * value of *@header will be set to NULL.
3945  *
3946  * If an error is encountered, the function will return a pointer error value.
3947  * If the function is interrupted by a signal while sleeping, it will return
3948  * -ERESTARTSYS casted to a pointer error value.
3949  */
3950 static void *vmw_execbuf_cmdbuf(struct vmw_private *dev_priv,
3951 				void __user *user_commands,
3952 				void *kernel_commands, u32 command_size,
3953 				struct vmw_cmdbuf_header **header)
3954 {
3955 	size_t cmdbuf_size;
3956 	int ret;
3957 
3958 	*header = NULL;
3959 	if (command_size > SVGA_CB_MAX_SIZE) {
3960 		VMW_DEBUG_USER("Command buffer is too large.\n");
3961 		return ERR_PTR(-EINVAL);
3962 	}
3963 
3964 	if (!dev_priv->cman || kernel_commands)
3965 		return kernel_commands;
3966 
3967 	/* If possible, add a little space for fencing. */
3968 	cmdbuf_size = command_size + 512;
3969 	cmdbuf_size = min_t(size_t, cmdbuf_size, SVGA_CB_MAX_SIZE);
3970 	kernel_commands = vmw_cmdbuf_alloc(dev_priv->cman, cmdbuf_size, true,
3971 					   header);
3972 	if (IS_ERR(kernel_commands))
3973 		return kernel_commands;
3974 
3975 	ret = copy_from_user(kernel_commands, user_commands, command_size);
3976 	if (ret) {
3977 		VMW_DEBUG_USER("Failed copying commands.\n");
3978 		vmw_cmdbuf_header_free(*header);
3979 		*header = NULL;
3980 		return ERR_PTR(-EFAULT);
3981 	}
3982 
3983 	return kernel_commands;
3984 }
3985 
3986 static int vmw_execbuf_tie_context(struct vmw_private *dev_priv,
3987 				   struct vmw_sw_context *sw_context,
3988 				   uint32_t handle)
3989 {
3990 	struct vmw_resource *res;
3991 	int ret;
3992 	unsigned int size;
3993 
3994 	if (handle == SVGA3D_INVALID_ID)
3995 		return 0;
3996 
3997 	size = vmw_execbuf_res_size(dev_priv, vmw_res_dx_context);
3998 	ret = vmw_validation_preload_res(sw_context->ctx, size);
3999 	if (ret)
4000 		return ret;
4001 
4002 	res = vmw_user_resource_noref_lookup_handle
4003 		(dev_priv, sw_context->fp->tfile, handle,
4004 		 user_context_converter);
4005 	if (IS_ERR(res)) {
4006 		VMW_DEBUG_USER("Could not find or user DX context 0x%08x.\n",
4007 			       (unsigned int) handle);
4008 		return PTR_ERR(res);
4009 	}
4010 
4011 	ret = vmw_execbuf_res_noref_val_add(sw_context, res, VMW_RES_DIRTY_SET);
4012 	if (unlikely(ret != 0))
4013 		return ret;
4014 
4015 	sw_context->dx_ctx_node = vmw_execbuf_info_from_res(sw_context, res);
4016 	sw_context->man = vmw_context_res_man(res);
4017 
4018 	return 0;
4019 }
4020 
4021 int vmw_execbuf_process(struct drm_file *file_priv,
4022 			struct vmw_private *dev_priv,
4023 			void __user *user_commands, void *kernel_commands,
4024 			uint32_t command_size, uint64_t throttle_us,
4025 			uint32_t dx_context_handle,
4026 			struct drm_vmw_fence_rep __user *user_fence_rep,
4027 			struct vmw_fence_obj **out_fence, uint32_t flags)
4028 {
4029 	struct vmw_sw_context *sw_context = &dev_priv->ctx;
4030 	struct vmw_fence_obj *fence = NULL;
4031 	struct vmw_cmdbuf_header *header;
4032 	uint32_t handle = 0;
4033 	int ret;
4034 	int32_t out_fence_fd = -1;
4035 	struct sync_file *sync_file = NULL;
4036 	DECLARE_VAL_CONTEXT(val_ctx, &sw_context->res_ht, 1);
4037 
4038 	vmw_validation_set_val_mem(&val_ctx, &dev_priv->vvm);
4039 
4040 	if (flags & DRM_VMW_EXECBUF_FLAG_EXPORT_FENCE_FD) {
4041 		out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
4042 		if (out_fence_fd < 0) {
4043 			VMW_DEBUG_USER("Failed to get a fence fd.\n");
4044 			return out_fence_fd;
4045 		}
4046 	}
4047 
4048 	if (throttle_us) {
4049 		ret = vmw_wait_lag(dev_priv, &dev_priv->fifo.marker_queue,
4050 				   throttle_us);
4051 
4052 		if (ret)
4053 			goto out_free_fence_fd;
4054 	}
4055 
4056 	kernel_commands = vmw_execbuf_cmdbuf(dev_priv, user_commands,
4057 					     kernel_commands, command_size,
4058 					     &header);
4059 	if (IS_ERR(kernel_commands)) {
4060 		ret = PTR_ERR(kernel_commands);
4061 		goto out_free_fence_fd;
4062 	}
4063 
4064 	ret = mutex_lock_interruptible(&dev_priv->cmdbuf_mutex);
4065 	if (ret) {
4066 		ret = -ERESTARTSYS;
4067 		goto out_free_header;
4068 	}
4069 
4070 	sw_context->kernel = false;
4071 	if (kernel_commands == NULL) {
4072 		ret = vmw_resize_cmd_bounce(sw_context, command_size);
4073 		if (unlikely(ret != 0))
4074 			goto out_unlock;
4075 
4076 		ret = copy_from_user(sw_context->cmd_bounce, user_commands,
4077 				     command_size);
4078 		if (unlikely(ret != 0)) {
4079 			ret = -EFAULT;
4080 			VMW_DEBUG_USER("Failed copying commands.\n");
4081 			goto out_unlock;
4082 		}
4083 
4084 		kernel_commands = sw_context->cmd_bounce;
4085 	} else if (!header) {
4086 		sw_context->kernel = true;
4087 	}
4088 
4089 	sw_context->fp = vmw_fpriv(file_priv);
4090 	INIT_LIST_HEAD(&sw_context->ctx_list);
4091 	sw_context->cur_query_bo = dev_priv->pinned_bo;
4092 	sw_context->last_query_ctx = NULL;
4093 	sw_context->needs_post_query_barrier = false;
4094 	sw_context->dx_ctx_node = NULL;
4095 	sw_context->dx_query_mob = NULL;
4096 	sw_context->dx_query_ctx = NULL;
4097 	memset(sw_context->res_cache, 0, sizeof(sw_context->res_cache));
4098 	INIT_LIST_HEAD(&sw_context->res_relocations);
4099 	INIT_LIST_HEAD(&sw_context->bo_relocations);
4100 
4101 	if (sw_context->staged_bindings)
4102 		vmw_binding_state_reset(sw_context->staged_bindings);
4103 
4104 	if (!sw_context->res_ht_initialized) {
4105 		ret = drm_ht_create(&sw_context->res_ht, VMW_RES_HT_ORDER);
4106 		if (unlikely(ret != 0))
4107 			goto out_unlock;
4108 
4109 		sw_context->res_ht_initialized = true;
4110 	}
4111 
4112 	INIT_LIST_HEAD(&sw_context->staged_cmd_res);
4113 	sw_context->ctx = &val_ctx;
4114 	ret = vmw_execbuf_tie_context(dev_priv, sw_context, dx_context_handle);
4115 	if (unlikely(ret != 0))
4116 		goto out_err_nores;
4117 
4118 	ret = vmw_cmd_check_all(dev_priv, sw_context, kernel_commands,
4119 				command_size);
4120 	if (unlikely(ret != 0))
4121 		goto out_err_nores;
4122 
4123 	ret = vmw_resources_reserve(sw_context);
4124 	if (unlikely(ret != 0))
4125 		goto out_err_nores;
4126 
4127 	ret = vmw_validation_bo_reserve(&val_ctx, true);
4128 	if (unlikely(ret != 0))
4129 		goto out_err_nores;
4130 
4131 	ret = vmw_validation_bo_validate(&val_ctx, true);
4132 	if (unlikely(ret != 0))
4133 		goto out_err;
4134 
4135 	ret = vmw_validation_res_validate(&val_ctx, true);
4136 	if (unlikely(ret != 0))
4137 		goto out_err;
4138 
4139 	vmw_validation_drop_ht(&val_ctx);
4140 
4141 	ret = mutex_lock_interruptible(&dev_priv->binding_mutex);
4142 	if (unlikely(ret != 0)) {
4143 		ret = -ERESTARTSYS;
4144 		goto out_err;
4145 	}
4146 
4147 	if (dev_priv->has_mob) {
4148 		ret = vmw_rebind_contexts(sw_context);
4149 		if (unlikely(ret != 0))
4150 			goto out_unlock_binding;
4151 	}
4152 
4153 	if (!header) {
4154 		ret = vmw_execbuf_submit_fifo(dev_priv, kernel_commands,
4155 					      command_size, sw_context);
4156 	} else {
4157 		ret = vmw_execbuf_submit_cmdbuf(dev_priv, header, command_size,
4158 						sw_context);
4159 		header = NULL;
4160 	}
4161 	mutex_unlock(&dev_priv->binding_mutex);
4162 	if (ret)
4163 		goto out_err;
4164 
4165 	vmw_query_bo_switch_commit(dev_priv, sw_context);
4166 	ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
4167 					 (user_fence_rep) ? &handle : NULL);
4168 	/*
4169 	 * This error is harmless, because if fence submission fails,
4170 	 * vmw_fifo_send_fence will sync. The error will be propagated to
4171 	 * user-space in @fence_rep
4172 	 */
4173 	if (ret != 0)
4174 		VMW_DEBUG_USER("Fence submission error. Syncing.\n");
4175 
4176 	vmw_execbuf_bindings_commit(sw_context, false);
4177 	vmw_bind_dx_query_mob(sw_context);
4178 	vmw_validation_res_unreserve(&val_ctx, false);
4179 
4180 	vmw_validation_bo_fence(sw_context->ctx, fence);
4181 
4182 	if (unlikely(dev_priv->pinned_bo != NULL && !dev_priv->query_cid_valid))
4183 		__vmw_execbuf_release_pinned_bo(dev_priv, fence);
4184 
4185 	/*
4186 	 * If anything fails here, give up trying to export the fence and do a
4187 	 * sync since the user mode will not be able to sync the fence itself.
4188 	 * This ensures we are still functionally correct.
4189 	 */
4190 	if (flags & DRM_VMW_EXECBUF_FLAG_EXPORT_FENCE_FD) {
4191 
4192 		sync_file = sync_file_create(&fence->base);
4193 		if (!sync_file) {
4194 			VMW_DEBUG_USER("Sync file create failed for fence\n");
4195 			put_unused_fd(out_fence_fd);
4196 			out_fence_fd = -1;
4197 
4198 			(void) vmw_fence_obj_wait(fence, false, false,
4199 						  VMW_FENCE_WAIT_TIMEOUT);
4200 		} else {
4201 			/* Link the fence with the FD created earlier */
4202 			fd_install(out_fence_fd, sync_file->file);
4203 		}
4204 	}
4205 
4206 	vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv), ret,
4207 				    user_fence_rep, fence, handle, out_fence_fd,
4208 				    sync_file);
4209 
4210 	/* Don't unreference when handing fence out */
4211 	if (unlikely(out_fence != NULL)) {
4212 		*out_fence = fence;
4213 		fence = NULL;
4214 	} else if (likely(fence != NULL)) {
4215 		vmw_fence_obj_unreference(&fence);
4216 	}
4217 
4218 	vmw_cmdbuf_res_commit(&sw_context->staged_cmd_res);
4219 	mutex_unlock(&dev_priv->cmdbuf_mutex);
4220 
4221 	/*
4222 	 * Unreference resources outside of the cmdbuf_mutex to avoid deadlocks
4223 	 * in resource destruction paths.
4224 	 */
4225 	vmw_validation_unref_lists(&val_ctx);
4226 
4227 	return 0;
4228 
4229 out_unlock_binding:
4230 	mutex_unlock(&dev_priv->binding_mutex);
4231 out_err:
4232 	vmw_validation_bo_backoff(&val_ctx);
4233 out_err_nores:
4234 	vmw_execbuf_bindings_commit(sw_context, true);
4235 	vmw_validation_res_unreserve(&val_ctx, true);
4236 	vmw_resource_relocations_free(&sw_context->res_relocations);
4237 	vmw_free_relocations(sw_context);
4238 	if (unlikely(dev_priv->pinned_bo != NULL && !dev_priv->query_cid_valid))
4239 		__vmw_execbuf_release_pinned_bo(dev_priv, NULL);
4240 out_unlock:
4241 	vmw_cmdbuf_res_revert(&sw_context->staged_cmd_res);
4242 	vmw_validation_drop_ht(&val_ctx);
4243 	WARN_ON(!list_empty(&sw_context->ctx_list));
4244 	mutex_unlock(&dev_priv->cmdbuf_mutex);
4245 
4246 	/*
4247 	 * Unreference resources outside of the cmdbuf_mutex to avoid deadlocks
4248 	 * in resource destruction paths.
4249 	 */
4250 	vmw_validation_unref_lists(&val_ctx);
4251 out_free_header:
4252 	if (header)
4253 		vmw_cmdbuf_header_free(header);
4254 out_free_fence_fd:
4255 	if (out_fence_fd >= 0)
4256 		put_unused_fd(out_fence_fd);
4257 
4258 	return ret;
4259 }
4260 
4261 /**
4262  * vmw_execbuf_unpin_panic - Idle the fifo and unpin the query buffer.
4263  *
4264  * @dev_priv: The device private structure.
4265  *
4266  * This function is called to idle the fifo and unpin the query buffer if the
4267  * normal way to do this hits an error, which should typically be extremely
4268  * rare.
4269  */
4270 static void vmw_execbuf_unpin_panic(struct vmw_private *dev_priv)
4271 {
4272 	VMW_DEBUG_USER("Can't unpin query buffer. Trying to recover.\n");
4273 
4274 	(void) vmw_fallback_wait(dev_priv, false, true, 0, false, 10*HZ);
4275 	vmw_bo_pin_reserved(dev_priv->pinned_bo, false);
4276 	if (dev_priv->dummy_query_bo_pinned) {
4277 		vmw_bo_pin_reserved(dev_priv->dummy_query_bo, false);
4278 		dev_priv->dummy_query_bo_pinned = false;
4279 	}
4280 }
4281 
4282 
4283 /**
4284  * __vmw_execbuf_release_pinned_bo - Flush queries and unpin the pinned query
4285  * bo.
4286  *
4287  * @dev_priv: The device private structure.
4288  * @fence: If non-NULL should point to a struct vmw_fence_obj issued _after_ a
4289  * query barrier that flushes all queries touching the current buffer pointed to
4290  * by @dev_priv->pinned_bo
4291  *
4292  * This function should be used to unpin the pinned query bo, or as a query
4293  * barrier when we need to make sure that all queries have finished before the
4294  * next fifo command. (For example on hardware context destructions where the
4295  * hardware may otherwise leak unfinished queries).
4296  *
4297  * This function does not return any failure codes, but make attempts to do safe
4298  * unpinning in case of errors.
4299  *
4300  * The function will synchronize on the previous query barrier, and will thus
4301  * not finish until that barrier has executed.
4302  *
4303  * the @dev_priv->cmdbuf_mutex needs to be held by the current thread before
4304  * calling this function.
4305  */
4306 void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv,
4307 				     struct vmw_fence_obj *fence)
4308 {
4309 	int ret = 0;
4310 	struct vmw_fence_obj *lfence = NULL;
4311 	DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
4312 
4313 	if (dev_priv->pinned_bo == NULL)
4314 		goto out_unlock;
4315 
4316 	ret = vmw_validation_add_bo(&val_ctx, dev_priv->pinned_bo, false,
4317 				    false);
4318 	if (ret)
4319 		goto out_no_reserve;
4320 
4321 	ret = vmw_validation_add_bo(&val_ctx, dev_priv->dummy_query_bo, false,
4322 				    false);
4323 	if (ret)
4324 		goto out_no_reserve;
4325 
4326 	ret = vmw_validation_bo_reserve(&val_ctx, false);
4327 	if (ret)
4328 		goto out_no_reserve;
4329 
4330 	if (dev_priv->query_cid_valid) {
4331 		BUG_ON(fence != NULL);
4332 		ret = vmw_fifo_emit_dummy_query(dev_priv, dev_priv->query_cid);
4333 		if (ret)
4334 			goto out_no_emit;
4335 		dev_priv->query_cid_valid = false;
4336 	}
4337 
4338 	vmw_bo_pin_reserved(dev_priv->pinned_bo, false);
4339 	if (dev_priv->dummy_query_bo_pinned) {
4340 		vmw_bo_pin_reserved(dev_priv->dummy_query_bo, false);
4341 		dev_priv->dummy_query_bo_pinned = false;
4342 	}
4343 	if (fence == NULL) {
4344 		(void) vmw_execbuf_fence_commands(NULL, dev_priv, &lfence,
4345 						  NULL);
4346 		fence = lfence;
4347 	}
4348 	vmw_validation_bo_fence(&val_ctx, fence);
4349 	if (lfence != NULL)
4350 		vmw_fence_obj_unreference(&lfence);
4351 
4352 	vmw_validation_unref_lists(&val_ctx);
4353 	vmw_bo_unreference(&dev_priv->pinned_bo);
4354 
4355 out_unlock:
4356 	return;
4357 out_no_emit:
4358 	vmw_validation_bo_backoff(&val_ctx);
4359 out_no_reserve:
4360 	vmw_validation_unref_lists(&val_ctx);
4361 	vmw_execbuf_unpin_panic(dev_priv);
4362 	vmw_bo_unreference(&dev_priv->pinned_bo);
4363 }
4364 
4365 /**
4366  * vmw_execbuf_release_pinned_bo - Flush queries and unpin the pinned query bo.
4367  *
4368  * @dev_priv: The device private structure.
4369  *
4370  * This function should be used to unpin the pinned query bo, or as a query
4371  * barrier when we need to make sure that all queries have finished before the
4372  * next fifo command. (For example on hardware context destructions where the
4373  * hardware may otherwise leak unfinished queries).
4374  *
4375  * This function does not return any failure codes, but make attempts to do safe
4376  * unpinning in case of errors.
4377  *
4378  * The function will synchronize on the previous query barrier, and will thus
4379  * not finish until that barrier has executed.
4380  */
4381 void vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv)
4382 {
4383 	mutex_lock(&dev_priv->cmdbuf_mutex);
4384 	if (dev_priv->query_cid_valid)
4385 		__vmw_execbuf_release_pinned_bo(dev_priv, NULL);
4386 	mutex_unlock(&dev_priv->cmdbuf_mutex);
4387 }
4388 
4389 int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
4390 		      struct drm_file *file_priv)
4391 {
4392 	struct vmw_private *dev_priv = vmw_priv(dev);
4393 	struct drm_vmw_execbuf_arg *arg = data;
4394 	int ret;
4395 	struct dma_fence *in_fence = NULL;
4396 
4397 	/*
4398 	 * Extend the ioctl argument while maintaining backwards compatibility:
4399 	 * We take different code paths depending on the value of arg->version.
4400 	 *
4401 	 * Note: The ioctl argument is extended and zeropadded by core DRM.
4402 	 */
4403 	if (unlikely(arg->version > DRM_VMW_EXECBUF_VERSION ||
4404 		     arg->version == 0)) {
4405 		VMW_DEBUG_USER("Incorrect execbuf version.\n");
4406 		return -EINVAL;
4407 	}
4408 
4409 	switch (arg->version) {
4410 	case 1:
4411 		/* For v1 core DRM have extended + zeropadded the data */
4412 		arg->context_handle = (uint32_t) -1;
4413 		break;
4414 	case 2:
4415 	default:
4416 		/* For v2 and later core DRM would have correctly copied it */
4417 		break;
4418 	}
4419 
4420 	/* If imported a fence FD from elsewhere, then wait on it */
4421 	if (arg->flags & DRM_VMW_EXECBUF_FLAG_IMPORT_FENCE_FD) {
4422 		in_fence = sync_file_get_fence(arg->imported_fence_fd);
4423 
4424 		if (!in_fence) {
4425 			VMW_DEBUG_USER("Cannot get imported fence\n");
4426 			return -EINVAL;
4427 		}
4428 
4429 		ret = vmw_wait_dma_fence(dev_priv->fman, in_fence);
4430 		if (ret)
4431 			goto out;
4432 	}
4433 
4434 	ret = ttm_read_lock(&dev_priv->reservation_sem, true);
4435 	if (unlikely(ret != 0))
4436 		return ret;
4437 
4438 	ret = vmw_execbuf_process(file_priv, dev_priv,
4439 				  (void __user *)(unsigned long)arg->commands,
4440 				  NULL, arg->command_size, arg->throttle_us,
4441 				  arg->context_handle,
4442 				  (void __user *)(unsigned long)arg->fence_rep,
4443 				  NULL, arg->flags);
4444 
4445 	ttm_read_unlock(&dev_priv->reservation_sem);
4446 	if (unlikely(ret != 0))
4447 		goto out;
4448 
4449 	vmw_kms_cursor_post_execbuf(dev_priv);
4450 
4451 out:
4452 	if (in_fence)
4453 		dma_fence_put(in_fence);
4454 	return ret;
4455 }
4456