drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009 - 2015 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27 #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  * enum vmw_resource_relocation_type - Relocation type for resources
  40  *
  41  * @vmw_res_rel_normal: Traditional relocation. The resource id in the
  42  * command stream is replaced with the actual id after validation.
  43  * @vmw_res_rel_nop: NOP relocation. The command is unconditionally replaced
  44  * with a NOP.
  45  * @vmw_res_rel_cond_nop: Conditional NOP relocation. If the resource id
  46  * after validation is -1, the command is replaced with a NOP. Otherwise no
  47  * action.
  48  */
  49 enum vmw_resource_relocation_type {
  50         vmw_res_rel_normal,
  51         vmw_res_rel_nop,
  52         vmw_res_rel_cond_nop,
  53         vmw_res_rel_max
  54 };
  55
  56 /**
  57  * struct vmw_resource_relocation - Relocation info for resources
  58  *
  59  * @head: List head for the software context's relocation list.
  60  * @res: Non-ref-counted pointer to the resource.
  61  * @offset: Offset of single byte entries into the command buffer where the
  62  * id that needs fixup is located.
  63  * @rel_type: Type of relocation.
  64  */
  65 struct vmw_resource_relocation {
  66         struct list_head head;
  67         const struct vmw_resource *res;
  68         u32 offset:29;
  69         enum vmw_resource_relocation_type rel_type:3;
  70 };
  71
  72 /**
  73  * struct vmw_resource_val_node - Validation info for resources
  74  *
  75  * @head: List head for the software context's resource list.
  76  * @hash: Hash entry for quick resouce to val_node lookup.
  77  * @res: Ref-counted pointer to the resource.
  78  * @switch_backup: Boolean whether to switch backup buffer on unreserve.
  79  * @new_backup: Refcounted pointer to the new backup buffer.
  80  * @staged_bindings: If @res is a context, tracks bindings set up during
  81  * the command batch. Otherwise NULL.
  82  * @new_backup_offset: New backup buffer offset if @new_backup is non-NUll.
  83  * @first_usage: Set to true the first time the resource is referenced in
  84  * the command stream.
  85  * @switching_backup: The command stream provides a new backup buffer for a
  86  * resource.
  87  * @no_buffer_needed: This means @switching_backup is true on first buffer
  88  * reference. So resource reservation does not need to allocate a backup
  89  * buffer for the resource.
  90  */
  91 struct vmw_resource_val_node {
  92         struct list_head head;
  93         struct drm_hash_item hash;
  94         struct vmw_resource *res;
  95         struct vmw_dma_buffer *new_backup;
  96         struct vmw_ctx_binding_state *staged_bindings;
  97         unsigned long new_backup_offset;
  98         u32 first_usage : 1;
  99         u32 switching_backup : 1;
 100         u32 no_buffer_needed : 1;
 101 };
 102
 103 /**
 104  * struct vmw_cmd_entry - Describe a command for the verifier
 105  *
 106  * @user_allow: Whether allowed from the execbuf ioctl.
 107  * @gb_disable: Whether disabled if guest-backed objects are available.
 108  * @gb_enable: Whether enabled iff guest-backed objects are available.
 109  */
 110 struct vmw_cmd_entry {
 111         int (*func) (struct vmw_private *, struct vmw_sw_context *,
 112                      SVGA3dCmdHeader *);
 113         bool user_allow;
 114         bool gb_disable;
 115         bool gb_enable;
 116         const char *cmd_name;
 117 };
 118
 119 #define VMW_CMD_DEF(_cmd, _func, _user_allow, _gb_disable, _gb_enable)  \
 120         [(_cmd) - SVGA_3D_CMD_BASE] = {(_func), (_user_allow),\
 121                                        (_gb_disable), (_gb_enable), #_cmd}
 122
 123 static int vmw_resource_context_res_add(struct vmw_private *dev_priv,
 124                                         struct vmw_sw_context *sw_context,
 125                                         struct vmw_resource *ctx);
 126 static int vmw_translate_mob_ptr(struct vmw_private *dev_priv,
 127                                  struct vmw_sw_context *sw_context,
 128                                  SVGAMobId *id,
 129                                  struct vmw_dma_buffer **vmw_bo_p);
 130 static int vmw_bo_to_validate_list(struct vmw_sw_context *sw_context,
 131                                    struct vmw_dma_buffer *vbo,
 132                                    bool validate_as_mob,
 133                                    uint32_t *p_val_node);
 134 /**
 135  * vmw_ptr_diff - Compute the offset from a to b in bytes
 136  *
 137  * @a: A starting pointer.
 138  * @b: A pointer offset in the same address space.
 139  *
 140  * Returns: The offset in bytes between the two pointers.
 141  */
 142 static size_t vmw_ptr_diff(void *a, void *b)
 143 {
 144         return (unsigned long) b - (unsigned long) a;
 145 }
 146
 147 /**
 148  * vmw_resources_unreserve - unreserve resources previously reserved for
 149  * command submission.
 150  *
 151  * @sw_context: pointer to the software context
 152  * @backoff: Whether command submission failed.
 153  */
 154 static void vmw_resources_unreserve(struct vmw_sw_context *sw_context,
 155                                     bool backoff)
 156 {
 157         struct vmw_resource_val_node *val;
 158         struct list_head *list = &sw_context->resource_list;
 159
 160         if (sw_context->dx_query_mob && !backoff)
 161                 vmw_context_bind_dx_query(sw_context->dx_query_ctx,
 162                                           sw_context->dx_query_mob);
 163
 164         list_for_each_entry(val, list, head) {
 165                 struct vmw_resource *res = val->res;
 166                 bool switch_backup =
 167                         (backoff) ? false : val->switching_backup;
 168
 169                 /*
 170                  * Transfer staged context bindings to the
 171                  * persistent context binding tracker.
 172                  */
 173                 if (unlikely(val->staged_bindings)) {
 174                         if (!backoff) {
 175                                 vmw_binding_state_commit
 176                                         (vmw_context_binding_state(val->res),
 177                                          val->staged_bindings);
 178                         }
 179
 180                         if (val->staged_bindings != sw_context->staged_bindings)
 181                                 vmw_binding_state_free(val->staged_bindings);
 182                         else
 183                                 sw_context->staged_bindings_inuse = false;
 184                         val->staged_bindings = NULL;
 185                 }
 186                 vmw_resource_unreserve(res, switch_backup, val->new_backup,
 187                                        val->new_backup_offset);
 188                 vmw_dmabuf_unreference(&val->new_backup);
 189         }
 190 }
 191
 192 /**
 193  * vmw_cmd_ctx_first_setup - Perform the setup needed when a context is
 194  * added to the validate list.
 195  *
 196  * @dev_priv: Pointer to the device private:
 197  * @sw_context: The validation context:
 198  * @node: The validation node holding this context.
 199  */
 200 static int vmw_cmd_ctx_first_setup(struct vmw_private *dev_priv,
 201                                    struct vmw_sw_context *sw_context,
 202                                    struct vmw_resource_val_node *node)
 203 {
 204         int ret;
 205
 206         ret = vmw_resource_context_res_add(dev_priv, sw_context, node->res);
 207         if (unlikely(ret != 0))
 208                 goto out_err;
 209
 210         if (!sw_context->staged_bindings) {
 211                 sw_context->staged_bindings =
 212                         vmw_binding_state_alloc(dev_priv);
 213                 if (IS_ERR(sw_context->staged_bindings)) {
 214                         DRM_ERROR("Failed to allocate context binding "
 215                                   "information.\n");
 216                         ret = PTR_ERR(sw_context->staged_bindings);
 217                         sw_context->staged_bindings = NULL;
 218                         goto out_err;
 219                 }
 220         }
 221
 222         if (sw_context->staged_bindings_inuse) {
 223                 node->staged_bindings = vmw_binding_state_alloc(dev_priv);
 224                 if (IS_ERR(node->staged_bindings)) {
 225                         DRM_ERROR("Failed to allocate context binding "
 226                                   "information.\n");
 227                         ret = PTR_ERR(node->staged_bindings);
 228                         node->staged_bindings = NULL;
 229                         goto out_err;
 230                 }
 231         } else {
 232                 node->staged_bindings = sw_context->staged_bindings;
 233                 sw_context->staged_bindings_inuse = true;
 234         }
 235
 236         return 0;
 237 out_err:
 238         return ret;
 239 }
 240
 241 /**
 242  * vmw_resource_val_add - Add a resource to the software context's
 243  * resource list if it's not already on it.
 244  *
 245  * @sw_context: Pointer to the software context.
 246  * @res: Pointer to the resource.
 247  * @p_node On successful return points to a valid pointer to a
 248  * struct vmw_resource_val_node, if non-NULL on entry.
 249  */
 250 static int vmw_resource_val_add(struct vmw_sw_context *sw_context,
 251                                 struct vmw_resource *res,
 252                                 struct vmw_resource_val_node **p_node)
 253 {
 254         struct vmw_private *dev_priv = res->dev_priv;
 255         struct vmw_resource_val_node *node;
 256         struct drm_hash_item *hash;
 257         int ret;
 258
 259         if (likely(drm_ht_find_item(&sw_context->res_ht, (unsigned long) res,
 260                                     &hash) == 0)) {
 261                 node = container_of(hash, struct vmw_resource_val_node, hash);
 262                 node->first_usage = false;
 263                 if (unlikely(p_node != NULL))
 264                         *p_node = node;
 265                 return 0;
 266         }
 267
 268         node = kzalloc(sizeof(*node), GFP_KERNEL);
 269         if (unlikely(!node)) {
 270                 DRM_ERROR("Failed to allocate a resource validation "
 271                           "entry.\n");
 272                 return -ENOMEM;
 273         }
 274
 275         node->hash.key = (unsigned long) res;
 276         ret = drm_ht_insert_item(&sw_context->res_ht, &node->hash);
 277         if (unlikely(ret != 0)) {
 278                 DRM_ERROR("Failed to initialize a resource validation "
 279                           "entry.\n");
 280                 kfree(node);
 281                 return ret;
 282         }
 283         node->res = vmw_resource_reference(res);
 284         node->first_usage = true;
 285         if (unlikely(p_node != NULL))
 286                 *p_node = node;
 287
 288         if (!dev_priv->has_mob) {
 289                 list_add_tail(&node->head, &sw_context->resource_list);
 290                 return 0;
 291         }
 292
 293         switch (vmw_res_type(res)) {
 294         case vmw_res_context:
 295         case vmw_res_dx_context:
 296                 list_add(&node->head, &sw_context->ctx_resource_list);
 297                 ret = vmw_cmd_ctx_first_setup(dev_priv, sw_context, node);
 298                 break;
 299         case vmw_res_cotable:
 300                 list_add_tail(&node->head, &sw_context->ctx_resource_list);
 301                 break;
 302         default:
 303                 list_add_tail(&node->head, &sw_context->resource_list);
 304                 break;
 305         }
 306
 307         return ret;
 308 }
 309
 310 /**
 311  * vmw_view_res_val_add - Add a view and the surface it's pointing to
 312  * to the validation list
 313  *
 314  * @sw_context: The software context holding the validation list.
 315  * @view: Pointer to the view resource.
 316  *
 317  * Returns 0 if success, negative error code otherwise.
 318  */
 319 static int vmw_view_res_val_add(struct vmw_sw_context *sw_context,
 320                                 struct vmw_resource *view)
 321 {
 322         int ret;
 323
 324         /*
 325          * First add the resource the view is pointing to, otherwise
 326          * it may be swapped out when the view is validated.
 327          */
 328         ret = vmw_resource_val_add(sw_context, vmw_view_srf(view), NULL);
 329         if (ret)
 330                 return ret;
 331
 332         return vmw_resource_val_add(sw_context, view, NULL);
 333 }
 334
 335 /**
 336  * vmw_view_id_val_add - Look up a view and add it and the surface it's
 337  * pointing to to the validation list.
 338  *
 339  * @sw_context: The software context holding the validation list.
 340  * @view_type: The view type to look up.
 341  * @id: view id of the view.
 342  *
 343  * The view is represented by a view id and the DX context it's created on,
 344  * or scheduled for creation on. If there is no DX context set, the function
 345  * will return -EINVAL. Otherwise returns 0 on success and -EINVAL on failure.
 346  */
 347 static int vmw_view_id_val_add(struct vmw_sw_context *sw_context,
 348                                enum vmw_view_type view_type, u32 id)
 349 {
 350         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
 351         struct vmw_resource *view;
 352         int ret;
 353
 354         if (!ctx_node) {
 355                 DRM_ERROR("DX Context not set.\n");
 356                 return -EINVAL;
 357         }
 358
 359         view = vmw_view_lookup(sw_context->man, view_type, id);
 360         if (IS_ERR(view))
 361                 return PTR_ERR(view);
 362
 363         ret = vmw_view_res_val_add(sw_context, view);
 364         vmw_resource_unreference(&view);
 365
 366         return ret;
 367 }
 368
 369 /**
 370  * vmw_resource_context_res_add - Put resources previously bound to a context on
 371  * the validation list
 372  *
 373  * @dev_priv: Pointer to a device private structure
 374  * @sw_context: Pointer to a software context used for this command submission
 375  * @ctx: Pointer to the context resource
 376  *
 377  * This function puts all resources that were previously bound to @ctx on
 378  * the resource validation list. This is part of the context state reemission
 379  */
 380 static int vmw_resource_context_res_add(struct vmw_private *dev_priv,
 381                                         struct vmw_sw_context *sw_context,
 382                                         struct vmw_resource *ctx)
 383 {
 384         struct list_head *binding_list;
 385         struct vmw_ctx_bindinfo *entry;
 386         int ret = 0;
 387         struct vmw_resource *res;
 388         u32 i;
 389
 390         /* Add all cotables to the validation list. */
 391         if (dev_priv->has_dx && vmw_res_type(ctx) == vmw_res_dx_context) {
 392                 for (i = 0; i < SVGA_COTABLE_DX10_MAX; ++i) {
 393                         res = vmw_context_cotable(ctx, i);
 394                         if (IS_ERR(res))
 395                                 continue;
 396
 397                         ret = vmw_resource_val_add(sw_context, res, NULL);
 398                         vmw_resource_unreference(&res);
 399                         if (unlikely(ret != 0))
 400                                 return ret;
 401                 }
 402         }
 403
 404
 405         /* Add all resources bound to the context to the validation list */
 406         mutex_lock(&dev_priv->binding_mutex);
 407         binding_list = vmw_context_binding_list(ctx);
 408
 409         list_for_each_entry(entry, binding_list, ctx_list) {
 410                 /* entry->res is not refcounted */
 411                 res = vmw_resource_reference_unless_doomed(entry->res);
 412                 if (unlikely(res == NULL))
 413                         continue;
 414
 415                 if (vmw_res_type(entry->res) == vmw_res_view)
 416                         ret = vmw_view_res_val_add(sw_context, entry->res);
 417                 else
 418                         ret = vmw_resource_val_add(sw_context, entry->res,
 419                                                    NULL);
 420                 vmw_resource_unreference(&res);
 421                 if (unlikely(ret != 0))
 422                         break;
 423         }
 424
 425         if (dev_priv->has_dx && vmw_res_type(ctx) == vmw_res_dx_context) {
 426                 struct vmw_dma_buffer *dx_query_mob;
 427
 428                 dx_query_mob = vmw_context_get_dx_query_mob(ctx);
 429                 if (dx_query_mob)
 430                         ret = vmw_bo_to_validate_list(sw_context,
 431                                                       dx_query_mob,
 432                                                       true, NULL);
 433         }
 434
 435         mutex_unlock(&dev_priv->binding_mutex);
 436         return ret;
 437 }
 438
 439 /**
 440  * vmw_resource_relocation_add - Add a relocation to the relocation list
 441  *
 442  * @list: Pointer to head of relocation list.
 443  * @res: The resource.
 444  * @offset: Offset into the command buffer currently being parsed where the
 445  * id that needs fixup is located. Granularity is one byte.
 446  * @rel_type: Relocation type.
 447  */
 448 static int vmw_resource_relocation_add(struct list_head *list,
 449                                        const struct vmw_resource *res,
 450                                        unsigned long offset,
 451                                        enum vmw_resource_relocation_type
 452                                        rel_type)
 453 {
 454         struct vmw_resource_relocation *rel;
 455
 456         rel = kmalloc(sizeof(*rel), GFP_KERNEL);
 457         if (unlikely(!rel)) {
 458                 DRM_ERROR("Failed to allocate a resource relocation.\n");
 459                 return -ENOMEM;
 460         }
 461
 462         rel->res = res;
 463         rel->offset = offset;
 464         rel->rel_type = rel_type;
 465         list_add_tail(&rel->head, list);
 466
 467         return 0;
 468 }
 469
 470 /**
 471  * vmw_resource_relocations_free - Free all relocations on a list
 472  *
 473  * @list: Pointer to the head of the relocation list.
 474  */
 475 static void vmw_resource_relocations_free(struct list_head *list)
 476 {
 477         struct vmw_resource_relocation *rel, *n;
 478
 479         list_for_each_entry_safe(rel, n, list, head) {
 480                 list_del(&rel->head);
 481                 kfree(rel);
 482         }
 483 }
 484
 485 /**
 486  * vmw_resource_relocations_apply - Apply all relocations on a list
 487  *
 488  * @cb: Pointer to the start of the command buffer bein patch. This need
 489  * not be the same buffer as the one being parsed when the relocation
 490  * list was built, but the contents must be the same modulo the
 491  * resource ids.
 492  * @list: Pointer to the head of the relocation list.
 493  */
 494 static void vmw_resource_relocations_apply(uint32_t *cb,
 495                                            struct list_head *list)
 496 {
 497         struct vmw_resource_relocation *rel;
 498
 499         /* Validate the struct vmw_resource_relocation member size */
 500         BUILD_BUG_ON(SVGA_CB_MAX_SIZE >= (1 << 29));
 501         BUILD_BUG_ON(vmw_res_rel_max >= (1 << 3));
 502
 503         list_for_each_entry(rel, list, head) {
 504                 u32 *addr = (u32 *)((unsigned long) cb + rel->offset);
 505                 switch (rel->rel_type) {
 506                 case vmw_res_rel_normal:
 507                         *addr = rel->res->id;
 508                         break;
 509                 case vmw_res_rel_nop:
 510                         *addr = SVGA_3D_CMD_NOP;
 511                         break;
 512                 default:
 513                         if (rel->res->id == -1)
 514                                 *addr = SVGA_3D_CMD_NOP;
 515                         break;
 516                 }
 517         }
 518 }
 519
 520 static int vmw_cmd_invalid(struct vmw_private *dev_priv,
 521                            struct vmw_sw_context *sw_context,
 522                            SVGA3dCmdHeader *header)
 523 {
 524         return -EINVAL;
 525 }
 526
 527 static int vmw_cmd_ok(struct vmw_private *dev_priv,
 528                       struct vmw_sw_context *sw_context,
 529                       SVGA3dCmdHeader *header)
 530 {
 531         return 0;
 532 }
 533
 534 /**
 535  * vmw_bo_to_validate_list - add a bo to a validate list
 536  *
 537  * @sw_context: The software context used for this command submission batch.
 538  * @bo: The buffer object to add.
 539  * @validate_as_mob: Validate this buffer as a MOB.
 540  * @p_val_node: If non-NULL Will be updated with the validate node number
 541  * on return.
 542  *
 543  * Returns -EINVAL if the limit of number of buffer objects per command
 544  * submission is reached.
 545  */
 546 static int vmw_bo_to_validate_list(struct vmw_sw_context *sw_context,
 547                                    struct vmw_dma_buffer *vbo,
 548                                    bool validate_as_mob,
 549                                    uint32_t *p_val_node)
 550 {
 551         uint32_t val_node;
 552         struct vmw_validate_buffer *vval_buf;
 553         struct ttm_validate_buffer *val_buf;
 554         struct drm_hash_item *hash;
 555         int ret;
 556
 557         if (likely(drm_ht_find_item(&sw_context->res_ht, (unsigned long) vbo,
 558                                     &hash) == 0)) {
 559                 vval_buf = container_of(hash, struct vmw_validate_buffer,
 560                                         hash);
 561                 if (unlikely(vval_buf->validate_as_mob != validate_as_mob)) {
 562                         DRM_ERROR("Inconsistent buffer usage.\n");
 563                         return -EINVAL;
 564                 }
 565                 val_buf = &vval_buf->base;
 566                 val_node = vval_buf - sw_context->val_bufs;
 567         } else {
 568                 val_node = sw_context->cur_val_buf;
 569                 if (unlikely(val_node >= VMWGFX_MAX_VALIDATIONS)) {
 570                         DRM_ERROR("Max number of DMA buffers per submission "
 571                                   "exceeded.\n");
 572                         return -EINVAL;
 573                 }
 574                 vval_buf = &sw_context->val_bufs[val_node];
 575                 vval_buf->hash.key = (unsigned long) vbo;
 576                 ret = drm_ht_insert_item(&sw_context->res_ht, &vval_buf->hash);
 577                 if (unlikely(ret != 0)) {
 578                         DRM_ERROR("Failed to initialize a buffer validation "
 579                                   "entry.\n");
 580                         return ret;
 581                 }
 582                 ++sw_context->cur_val_buf;
 583                 val_buf = &vval_buf->base;
 584                 val_buf->bo = ttm_bo_reference(&vbo->base);
 585                 val_buf->shared = false;
 586                 list_add_tail(&val_buf->head, &sw_context->validate_nodes);
 587                 vval_buf->validate_as_mob = validate_as_mob;
 588         }
 589
 590         if (p_val_node)
 591                 *p_val_node = val_node;
 592
 593         return 0;
 594 }
 595
 596 /**
 597  * vmw_resources_reserve - Reserve all resources on the sw_context's
 598  * resource list.
 599  *
 600  * @sw_context: Pointer to the software context.
 601  *
 602  * Note that since vmware's command submission currently is protected by
 603  * the cmdbuf mutex, no fancy deadlock avoidance is required for resources,
 604  * since only a single thread at once will attempt this.
 605  */
 606 static int vmw_resources_reserve(struct vmw_sw_context *sw_context)
 607 {
 608         struct vmw_resource_val_node *val;
 609         int ret = 0;
 610
 611         list_for_each_entry(val, &sw_context->resource_list, head) {
 612                 struct vmw_resource *res = val->res;
 613
 614                 ret = vmw_resource_reserve(res, true, val->no_buffer_needed);
 615                 if (unlikely(ret != 0))
 616                         return ret;
 617
 618                 if (res->backup) {
 619                         struct vmw_dma_buffer *vbo = res->backup;
 620
 621                         ret = vmw_bo_to_validate_list
 622                                 (sw_context, vbo,
 623                                  vmw_resource_needs_backup(res), NULL);
 624
 625                         if (unlikely(ret != 0))
 626                                 return ret;
 627                 }
 628         }
 629
 630         if (sw_context->dx_query_mob) {
 631                 struct vmw_dma_buffer *expected_dx_query_mob;
 632
 633                 expected_dx_query_mob =
 634                         vmw_context_get_dx_query_mob(sw_context->dx_query_ctx);
 635                 if (expected_dx_query_mob &&
 636                     expected_dx_query_mob != sw_context->dx_query_mob) {
 637                         ret = -EINVAL;
 638                 }
 639         }
 640
 641         return ret;
 642 }
 643
 644 /**
 645  * vmw_resources_validate - Validate all resources on the sw_context's
 646  * resource list.
 647  *
 648  * @sw_context: Pointer to the software context.
 649  *
 650  * Before this function is called, all resource backup buffers must have
 651  * been validated.
 652  */
 653 static int vmw_resources_validate(struct vmw_sw_context *sw_context)
 654 {
 655         struct vmw_resource_val_node *val;
 656         int ret;
 657
 658         list_for_each_entry(val, &sw_context->resource_list, head) {
 659                 struct vmw_resource *res = val->res;
 660                 struct vmw_dma_buffer *backup = res->backup;
 661
 662                 ret = vmw_resource_validate(res);
 663                 if (unlikely(ret != 0)) {
 664                         if (ret != -ERESTARTSYS)
 665                                 DRM_ERROR("Failed to validate resource.\n");
 666                         return ret;
 667                 }
 668
 669                 /* Check if the resource switched backup buffer */
 670                 if (backup && res->backup && (backup != res->backup)) {
 671                         struct vmw_dma_buffer *vbo = res->backup;
 672
 673                         ret = vmw_bo_to_validate_list
 674                                 (sw_context, vbo,
 675                                  vmw_resource_needs_backup(res), NULL);
 676                         if (ret) {
 677                                 ttm_bo_unreserve(&vbo->base);
 678                                 return ret;
 679                         }
 680                 }
 681         }
 682         return 0;
 683 }
 684
 685 /**
 686  * vmw_cmd_res_reloc_add - Add a resource to a software context's
 687  * relocation- and validation lists.
 688  *
 689  * @dev_priv: Pointer to a struct vmw_private identifying the device.
 690  * @sw_context: Pointer to the software context.
 691  * @id_loc: Pointer to where the id that needs translation is located.
 692  * @res: Valid pointer to a struct vmw_resource.
 693  * @p_val: If non null, a pointer to the struct vmw_resource_validate_node
 694  * used for this resource is returned here.
 695  */
 696 static int vmw_cmd_res_reloc_add(struct vmw_private *dev_priv,
 697                                  struct vmw_sw_context *sw_context,
 698                                  uint32_t *id_loc,
 699                                  struct vmw_resource *res,
 700                                  struct vmw_resource_val_node **p_val)
 701 {
 702         int ret;
 703         struct vmw_resource_val_node *node;
 704
 705         *p_val = NULL;
 706         ret = vmw_resource_relocation_add(&sw_context->res_relocations,
 707                                           res,
 708                                           vmw_ptr_diff(sw_context->buf_start,
 709                                                        id_loc),
 710                                           vmw_res_rel_normal);
 711         if (unlikely(ret != 0))
 712                 return ret;
 713
 714         ret = vmw_resource_val_add(sw_context, res, &node);
 715         if (unlikely(ret != 0))
 716                 return ret;
 717
 718         if (p_val)
 719                 *p_val = node;
 720
 721         return 0;
 722 }
 723
 724
 725 /**
 726  * vmw_cmd_res_check - Check that a resource is present and if so, put it
 727  * on the resource validate list unless it's already there.
 728  *
 729  * @dev_priv: Pointer to a device private structure.
 730  * @sw_context: Pointer to the software context.
 731  * @res_type: Resource type.
 732  * @converter: User-space visisble type specific information.
 733  * @id_loc: Pointer to the location in the command buffer currently being
 734  * parsed from where the user-space resource id handle is located.
 735  * @p_val: Pointer to pointer to resource validalidation node. Populated
 736  * on exit.
 737  */
 738 static int
 739 vmw_cmd_res_check(struct vmw_private *dev_priv,
 740                   struct vmw_sw_context *sw_context,
 741                   enum vmw_res_type res_type,
 742                   const struct vmw_user_resource_conv *converter,
 743                   uint32_t *id_loc,
 744                   struct vmw_resource_val_node **p_val)
 745 {
 746         struct vmw_res_cache_entry *rcache =
 747                 &sw_context->res_cache[res_type];
 748         struct vmw_resource *res;
 749         struct vmw_resource_val_node *node;
 750         int ret;
 751
 752         if (*id_loc == SVGA3D_INVALID_ID) {
 753                 if (p_val)
 754                         *p_val = NULL;
 755                 if (res_type == vmw_res_context) {
 756                         DRM_ERROR("Illegal context invalid id.\n");
 757                         return -EINVAL;
 758                 }
 759                 return 0;
 760         }
 761
 762         /*
 763          * Fastpath in case of repeated commands referencing the same
 764          * resource
 765          */
 766
 767         if (likely(rcache->valid && *id_loc == rcache->handle)) {
 768                 const struct vmw_resource *res = rcache->res;
 769
 770                 rcache->node->first_usage = false;
 771                 if (p_val)
 772                         *p_val = rcache->node;
 773
 774                 return vmw_resource_relocation_add
 775                         (&sw_context->res_relocations, res,
 776                          vmw_ptr_diff(sw_context->buf_start, id_loc),
 777                          vmw_res_rel_normal);
 778         }
 779
 780         ret = vmw_user_resource_lookup_handle(dev_priv,
 781                                               sw_context->fp->tfile,
 782                                               *id_loc,
 783                                               converter,
 784                                               &res);
 785         if (unlikely(ret != 0)) {
 786                 DRM_ERROR("Could not find or use resource 0x%08x.\n",
 787                           (unsigned) *id_loc);
 788                 dump_stack();
 789                 return ret;
 790         }
 791
 792         rcache->valid = true;
 793         rcache->res = res;
 794         rcache->handle = *id_loc;
 795
 796         ret = vmw_cmd_res_reloc_add(dev_priv, sw_context, id_loc,
 797                                     res, &node);
 798         if (unlikely(ret != 0))
 799                 goto out_no_reloc;
 800
 801         rcache->node = node;
 802         if (p_val)
 803                 *p_val = node;
 804         vmw_resource_unreference(&res);
 805         return 0;
 806
 807 out_no_reloc:
 808         BUG_ON(sw_context->error_resource != NULL);
 809         sw_context->error_resource = res;
 810
 811         return ret;
 812 }
 813
 814 /**
 815  * vmw_rebind_dx_query - Rebind DX query associated with the context
 816  *
 817  * @ctx_res: context the query belongs to
 818  *
 819  * This function assumes binding_mutex is held.
 820  */
 821 static int vmw_rebind_all_dx_query(struct vmw_resource *ctx_res)
 822 {
 823         struct vmw_private *dev_priv = ctx_res->dev_priv;
 824         struct vmw_dma_buffer *dx_query_mob;
 825         struct {
 826                 SVGA3dCmdHeader header;
 827                 SVGA3dCmdDXBindAllQuery body;
 828         } *cmd;
 829
 830
 831         dx_query_mob = vmw_context_get_dx_query_mob(ctx_res);
 832
 833         if (!dx_query_mob || dx_query_mob->dx_query_ctx)
 834                 return 0;
 835
 836         cmd = vmw_fifo_reserve_dx(dev_priv, sizeof(*cmd), ctx_res->id);
 837
 838         if (cmd == NULL) {
 839                 DRM_ERROR("Failed to rebind queries.\n");
 840                 return -ENOMEM;
 841         }
 842
 843         cmd->header.id = SVGA_3D_CMD_DX_BIND_ALL_QUERY;
 844         cmd->header.size = sizeof(cmd->body);
 845         cmd->body.cid = ctx_res->id;
 846         cmd->body.mobid = dx_query_mob->base.mem.start;
 847         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 848
 849         vmw_context_bind_dx_query(ctx_res, dx_query_mob);
 850
 851         return 0;
 852 }
 853
 854 /**
 855  * vmw_rebind_contexts - Rebind all resources previously bound to
 856  * referenced contexts.
 857  *
 858  * @sw_context: Pointer to the software context.
 859  *
 860  * Rebind context binding points that have been scrubbed because of eviction.
 861  */
 862 static int vmw_rebind_contexts(struct vmw_sw_context *sw_context)
 863 {
 864         struct vmw_resource_val_node *val;
 865         int ret;
 866
 867         list_for_each_entry(val, &sw_context->resource_list, head) {
 868                 if (unlikely(!val->staged_bindings))
 869                         break;
 870
 871                 ret = vmw_binding_rebind_all
 872                         (vmw_context_binding_state(val->res));
 873                 if (unlikely(ret != 0)) {
 874                         if (ret != -ERESTARTSYS)
 875                                 DRM_ERROR("Failed to rebind context.\n");
 876                         return ret;
 877                 }
 878
 879                 ret = vmw_rebind_all_dx_query(val->res);
 880                 if (ret != 0)
 881                         return ret;
 882         }
 883
 884         return 0;
 885 }
 886
 887 /**
 888  * vmw_view_bindings_add - Add an array of view bindings to a context
 889  * binding state tracker.
 890  *
 891  * @sw_context: The execbuf state used for this command.
 892  * @view_type: View type for the bindings.
 893  * @binding_type: Binding type for the bindings.
 894  * @shader_slot: The shader slot to user for the bindings.
 895  * @view_ids: Array of view ids to be bound.
 896  * @num_views: Number of view ids in @view_ids.
 897  * @first_slot: The binding slot to be used for the first view id in @view_ids.
 898  */
 899 static int vmw_view_bindings_add(struct vmw_sw_context *sw_context,
 900                                  enum vmw_view_type view_type,
 901                                  enum vmw_ctx_binding_type binding_type,
 902                                  uint32 shader_slot,
 903                                  uint32 view_ids[], u32 num_views,
 904                                  u32 first_slot)
 905 {
 906         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
 907         struct vmw_cmdbuf_res_manager *man;
 908         u32 i;
 909         int ret;
 910
 911         if (!ctx_node) {
 912                 DRM_ERROR("DX Context not set.\n");
 913                 return -EINVAL;
 914         }
 915
 916         man = sw_context->man;
 917         for (i = 0; i < num_views; ++i) {
 918                 struct vmw_ctx_bindinfo_view binding;
 919                 struct vmw_resource *view = NULL;
 920
 921                 if (view_ids[i] != SVGA3D_INVALID_ID) {
 922                         view = vmw_view_lookup(man, view_type, view_ids[i]);
 923                         if (IS_ERR(view)) {
 924                                 DRM_ERROR("View not found.\n");
 925                                 return PTR_ERR(view);
 926                         }
 927
 928                         ret = vmw_view_res_val_add(sw_context, view);
 929                         if (ret) {
 930                                 DRM_ERROR("Could not add view to "
 931                                           "validation list.\n");
 932                                 vmw_resource_unreference(&view);
 933                                 return ret;
 934                         }
 935                 }
 936                 binding.bi.ctx = ctx_node->res;
 937                 binding.bi.res = view;
 938                 binding.bi.bt = binding_type;
 939                 binding.shader_slot = shader_slot;
 940                 binding.slot = first_slot + i;
 941                 vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
 942                                 shader_slot, binding.slot);
 943                 if (view)
 944                         vmw_resource_unreference(&view);
 945         }
 946
 947         return 0;
 948 }
 949
 950 /**
 951  * vmw_cmd_cid_check - Check a command header for valid context information.
 952  *
 953  * @dev_priv: Pointer to a device private structure.
 954  * @sw_context: Pointer to the software context.
 955  * @header: A command header with an embedded user-space context handle.
 956  *
 957  * Convenience function: Call vmw_cmd_res_check with the user-space context
 958  * handle embedded in @header.
 959  */
 960 static int vmw_cmd_cid_check(struct vmw_private *dev_priv,
 961                              struct vmw_sw_context *sw_context,
 962                              SVGA3dCmdHeader *header)
 963 {
 964         struct vmw_cid_cmd {
 965                 SVGA3dCmdHeader header;
 966                 uint32_t cid;
 967         } *cmd;
 968
 969         cmd = container_of(header, struct vmw_cid_cmd, header);
 970         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
 971                                  user_context_converter, &cmd->cid, NULL);
 972 }
 973
 974 static int vmw_cmd_set_render_target_check(struct vmw_private *dev_priv,
 975                                            struct vmw_sw_context *sw_context,
 976                                            SVGA3dCmdHeader *header)
 977 {
 978         struct vmw_sid_cmd {
 979                 SVGA3dCmdHeader header;
 980                 SVGA3dCmdSetRenderTarget body;
 981         } *cmd;
 982         struct vmw_resource_val_node *ctx_node;
 983         struct vmw_resource_val_node *res_node;
 984         int ret;
 985
 986         cmd = container_of(header, struct vmw_sid_cmd, header);
 987
 988         if (cmd->body.type >= SVGA3D_RT_MAX) {
 989                 DRM_ERROR("Illegal render target type %u.\n",
 990                           (unsigned) cmd->body.type);
 991                 return -EINVAL;
 992         }
 993
 994         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
 995                                 user_context_converter, &cmd->body.cid,
 996                                 &ctx_node);
 997         if (unlikely(ret != 0))
 998                 return ret;
 999
1000         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1001                                 user_surface_converter,
1002                                 &cmd->body.target.sid, &res_node);
1003         if (unlikely(ret != 0))
1004                 return ret;
1005
1006         if (dev_priv->has_mob) {
1007                 struct vmw_ctx_bindinfo_view binding;
1008
1009                 binding.bi.ctx = ctx_node->res;
1010                 binding.bi.res = res_node ? res_node->res : NULL;
1011                 binding.bi.bt = vmw_ctx_binding_rt;
1012                 binding.slot = cmd->body.type;
1013                 vmw_binding_add(ctx_node->staged_bindings,
1014                                 &binding.bi, 0, binding.slot);
1015         }
1016
1017         return 0;
1018 }
1019
1020 static int vmw_cmd_surface_copy_check(struct vmw_private *dev_priv,
1021                                       struct vmw_sw_context *sw_context,
1022                                       SVGA3dCmdHeader *header)
1023 {
1024         struct vmw_sid_cmd {
1025                 SVGA3dCmdHeader header;
1026                 SVGA3dCmdSurfaceCopy body;
1027         } *cmd;
1028         int ret;
1029
1030         cmd = container_of(header, struct vmw_sid_cmd, header);
1031
1032         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1033                                 user_surface_converter,
1034                                 &cmd->body.src.sid, NULL);
1035         if (ret)
1036                 return ret;
1037
1038         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1039                                  user_surface_converter,
1040                                  &cmd->body.dest.sid, NULL);
1041 }
1042
1043 static int vmw_cmd_buffer_copy_check(struct vmw_private *dev_priv,
1044                                       struct vmw_sw_context *sw_context,
1045                                       SVGA3dCmdHeader *header)
1046 {
1047         struct {
1048                 SVGA3dCmdHeader header;
1049                 SVGA3dCmdDXBufferCopy body;
1050         } *cmd;
1051         int ret;
1052
1053         cmd = container_of(header, typeof(*cmd), header);
1054         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1055                                 user_surface_converter,
1056                                 &cmd->body.src, NULL);
1057         if (ret != 0)
1058                 return ret;
1059
1060         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1061                                  user_surface_converter,
1062                                  &cmd->body.dest, NULL);
1063 }
1064
1065 static int vmw_cmd_pred_copy_check(struct vmw_private *dev_priv,
1066                                    struct vmw_sw_context *sw_context,
1067                                    SVGA3dCmdHeader *header)
1068 {
1069         struct {
1070                 SVGA3dCmdHeader header;
1071                 SVGA3dCmdDXPredCopyRegion body;
1072         } *cmd;
1073         int ret;
1074
1075         cmd = container_of(header, typeof(*cmd), header);
1076         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1077                                 user_surface_converter,
1078                                 &cmd->body.srcSid, NULL);
1079         if (ret != 0)
1080                 return ret;
1081
1082         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1083                                  user_surface_converter,
1084                                  &cmd->body.dstSid, NULL);
1085 }
1086
1087 static int vmw_cmd_stretch_blt_check(struct vmw_private *dev_priv,
1088                                      struct vmw_sw_context *sw_context,
1089                                      SVGA3dCmdHeader *header)
1090 {
1091         struct vmw_sid_cmd {
1092                 SVGA3dCmdHeader header;
1093                 SVGA3dCmdSurfaceStretchBlt body;
1094         } *cmd;
1095         int ret;
1096
1097         cmd = container_of(header, struct vmw_sid_cmd, header);
1098         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1099                                 user_surface_converter,
1100                                 &cmd->body.src.sid, NULL);
1101         if (unlikely(ret != 0))
1102                 return ret;
1103         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1104                                  user_surface_converter,
1105                                  &cmd->body.dest.sid, NULL);
1106 }
1107
1108 static int vmw_cmd_blt_surf_screen_check(struct vmw_private *dev_priv,
1109                                          struct vmw_sw_context *sw_context,
1110                                          SVGA3dCmdHeader *header)
1111 {
1112         struct vmw_sid_cmd {
1113                 SVGA3dCmdHeader header;
1114                 SVGA3dCmdBlitSurfaceToScreen body;
1115         } *cmd;
1116
1117         cmd = container_of(header, struct vmw_sid_cmd, header);
1118
1119         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1120                                  user_surface_converter,
1121                                  &cmd->body.srcImage.sid, NULL);
1122 }
1123
1124 static int vmw_cmd_present_check(struct vmw_private *dev_priv,
1125                                  struct vmw_sw_context *sw_context,
1126                                  SVGA3dCmdHeader *header)
1127 {
1128         struct vmw_sid_cmd {
1129                 SVGA3dCmdHeader header;
1130                 SVGA3dCmdPresent body;
1131         } *cmd;
1132
1133
1134         cmd = container_of(header, struct vmw_sid_cmd, header);
1135
1136         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1137                                  user_surface_converter, &cmd->body.sid,
1138                                  NULL);
1139 }
1140
1141 /**
1142  * vmw_query_bo_switch_prepare - Prepare to switch pinned buffer for queries.
1143  *
1144  * @dev_priv: The device private structure.
1145  * @new_query_bo: The new buffer holding query results.
1146  * @sw_context: The software context used for this command submission.
1147  *
1148  * This function checks whether @new_query_bo is suitable for holding
1149  * query results, and if another buffer currently is pinned for query
1150  * results. If so, the function prepares the state of @sw_context for
1151  * switching pinned buffers after successful submission of the current
1152  * command batch.
1153  */
1154 static int vmw_query_bo_switch_prepare(struct vmw_private *dev_priv,
1155                                        struct vmw_dma_buffer *new_query_bo,
1156                                        struct vmw_sw_context *sw_context)
1157 {
1158         struct vmw_res_cache_entry *ctx_entry =
1159                 &sw_context->res_cache[vmw_res_context];
1160         int ret;
1161
1162         BUG_ON(!ctx_entry->valid);
1163         sw_context->last_query_ctx = ctx_entry->res;
1164
1165         if (unlikely(new_query_bo != sw_context->cur_query_bo)) {
1166
1167                 if (unlikely(new_query_bo->base.num_pages > 4)) {
1168                         DRM_ERROR("Query buffer too large.\n");
1169                         return -EINVAL;
1170                 }
1171
1172                 if (unlikely(sw_context->cur_query_bo != NULL)) {
1173                         sw_context->needs_post_query_barrier = true;
1174                         ret = vmw_bo_to_validate_list(sw_context,
1175                                                       sw_context->cur_query_bo,
1176                                                       dev_priv->has_mob, NULL);
1177                         if (unlikely(ret != 0))
1178                                 return ret;
1179                 }
1180                 sw_context->cur_query_bo = new_query_bo;
1181
1182                 ret = vmw_bo_to_validate_list(sw_context,
1183                                               dev_priv->dummy_query_bo,
1184                                               dev_priv->has_mob, NULL);
1185                 if (unlikely(ret != 0))
1186                         return ret;
1187
1188         }
1189
1190         return 0;
1191 }
1192
1193
1194 /**
1195  * vmw_query_bo_switch_commit - Finalize switching pinned query buffer
1196  *
1197  * @dev_priv: The device private structure.
1198  * @sw_context: The software context used for this command submission batch.
1199  *
1200  * This function will check if we're switching query buffers, and will then,
1201  * issue a dummy occlusion query wait used as a query barrier. When the fence
1202  * object following that query wait has signaled, we are sure that all
1203  * preceding queries have finished, and the old query buffer can be unpinned.
1204  * However, since both the new query buffer and the old one are fenced with
1205  * that fence, we can do an asynchronus unpin now, and be sure that the
1206  * old query buffer won't be moved until the fence has signaled.
1207  *
1208  * As mentioned above, both the new - and old query buffers need to be fenced
1209  * using a sequence emitted *after* calling this function.
1210  */
1211 static void vmw_query_bo_switch_commit(struct vmw_private *dev_priv,
1212                                      struct vmw_sw_context *sw_context)
1213 {
1214         /*
1215          * The validate list should still hold references to all
1216          * contexts here.
1217          */
1218
1219         if (sw_context->needs_post_query_barrier) {
1220                 struct vmw_res_cache_entry *ctx_entry =
1221                         &sw_context->res_cache[vmw_res_context];
1222                 struct vmw_resource *ctx;
1223                 int ret;
1224
1225                 BUG_ON(!ctx_entry->valid);
1226                 ctx = ctx_entry->res;
1227
1228                 ret = vmw_fifo_emit_dummy_query(dev_priv, ctx->id);
1229
1230                 if (unlikely(ret != 0))
1231                         DRM_ERROR("Out of fifo space for dummy query.\n");
1232         }
1233
1234         if (dev_priv->pinned_bo != sw_context->cur_query_bo) {
1235                 if (dev_priv->pinned_bo) {
1236                         vmw_bo_pin_reserved(dev_priv->pinned_bo, false);
1237                         vmw_dmabuf_unreference(&dev_priv->pinned_bo);
1238                 }
1239
1240                 if (!sw_context->needs_post_query_barrier) {
1241                         vmw_bo_pin_reserved(sw_context->cur_query_bo, true);
1242
1243                         /*
1244                          * We pin also the dummy_query_bo buffer so that we
1245                          * don't need to validate it when emitting
1246                          * dummy queries in context destroy paths.
1247                          */
1248
1249                         if (!dev_priv->dummy_query_bo_pinned) {
1250                                 vmw_bo_pin_reserved(dev_priv->dummy_query_bo,
1251                                                     true);
1252                                 dev_priv->dummy_query_bo_pinned = true;
1253                         }
1254
1255                         BUG_ON(sw_context->last_query_ctx == NULL);
1256                         dev_priv->query_cid = sw_context->last_query_ctx->id;
1257                         dev_priv->query_cid_valid = true;
1258                         dev_priv->pinned_bo =
1259                                 vmw_dmabuf_reference(sw_context->cur_query_bo);
1260                 }
1261         }
1262 }
1263
1264 /**
1265  * vmw_translate_mob_pointer - Prepare to translate a user-space buffer
1266  * handle to a MOB id.
1267  *
1268  * @dev_priv: Pointer to a device private structure.
1269  * @sw_context: The software context used for this command batch validation.
1270  * @id: Pointer to the user-space handle to be translated.
1271  * @vmw_bo_p: Points to a location that, on successful return will carry
1272  * a reference-counted pointer to the DMA buffer identified by the
1273  * user-space handle in @id.
1274  *
1275  * This function saves information needed to translate a user-space buffer
1276  * handle to a MOB id. The translation does not take place immediately, but
1277  * during a call to vmw_apply_relocations(). This function builds a relocation
1278  * list and a list of buffers to validate. The former needs to be freed using
1279  * either vmw_apply_relocations() or vmw_free_relocations(). The latter
1280  * needs to be freed using vmw_clear_validations.
1281  */
1282 static int vmw_translate_mob_ptr(struct vmw_private *dev_priv,
1283                                  struct vmw_sw_context *sw_context,
1284                                  SVGAMobId *id,
1285                                  struct vmw_dma_buffer **vmw_bo_p)
1286 {
1287         struct vmw_dma_buffer *vmw_bo = NULL;
1288         uint32_t handle = *id;
1289         struct vmw_relocation *reloc;
1290         int ret;
1291
1292         ret = vmw_user_dmabuf_lookup(sw_context->fp->tfile, handle, &vmw_bo,
1293                                      NULL);
1294         if (unlikely(ret != 0)) {
1295                 DRM_ERROR("Could not find or use MOB buffer.\n");
1296                 ret = -EINVAL;
1297                 goto out_no_reloc;
1298         }
1299
1300         if (unlikely(sw_context->cur_reloc >= VMWGFX_MAX_RELOCATIONS)) {
1301                 DRM_ERROR("Max number relocations per submission"
1302                           " exceeded\n");
1303                 ret = -EINVAL;
1304                 goto out_no_reloc;
1305         }
1306
1307         reloc = &sw_context->relocs[sw_context->cur_reloc++];
1308         reloc->mob_loc = id;
1309         reloc->location = NULL;
1310
1311         ret = vmw_bo_to_validate_list(sw_context, vmw_bo, true, &reloc->index);
1312         if (unlikely(ret != 0))
1313                 goto out_no_reloc;
1314
1315         *vmw_bo_p = vmw_bo;
1316         return 0;
1317
1318 out_no_reloc:
1319         vmw_dmabuf_unreference(&vmw_bo);
1320         *vmw_bo_p = NULL;
1321         return ret;
1322 }
1323
1324 /**
1325  * vmw_translate_guest_pointer - Prepare to translate a user-space buffer
1326  * handle to a valid SVGAGuestPtr
1327  *
1328  * @dev_priv: Pointer to a device private structure.
1329  * @sw_context: The software context used for this command batch validation.
1330  * @ptr: Pointer to the user-space handle to be translated.
1331  * @vmw_bo_p: Points to a location that, on successful return will carry
1332  * a reference-counted pointer to the DMA buffer identified by the
1333  * user-space handle in @id.
1334  *
1335  * This function saves information needed to translate a user-space buffer
1336  * handle to a valid SVGAGuestPtr. The translation does not take place
1337  * immediately, but during a call to vmw_apply_relocations().
1338  * This function builds a relocation list and a list of buffers to validate.
1339  * The former needs to be freed using either vmw_apply_relocations() or
1340  * vmw_free_relocations(). The latter needs to be freed using
1341  * vmw_clear_validations.
1342  */
1343 static int vmw_translate_guest_ptr(struct vmw_private *dev_priv,
1344                                    struct vmw_sw_context *sw_context,
1345                                    SVGAGuestPtr *ptr,
1346                                    struct vmw_dma_buffer **vmw_bo_p)
1347 {
1348         struct vmw_dma_buffer *vmw_bo = NULL;
1349         uint32_t handle = ptr->gmrId;
1350         struct vmw_relocation *reloc;
1351         int ret;
1352
1353         ret = vmw_user_dmabuf_lookup(sw_context->fp->tfile, handle, &vmw_bo,
1354                                      NULL);
1355         if (unlikely(ret != 0)) {
1356                 DRM_ERROR("Could not find or use GMR region.\n");
1357                 ret = -EINVAL;
1358                 goto out_no_reloc;
1359         }
1360
1361         if (unlikely(sw_context->cur_reloc >= VMWGFX_MAX_RELOCATIONS)) {
1362                 DRM_ERROR("Max number relocations per submission"
1363                           " exceeded\n");
1364                 ret = -EINVAL;
1365                 goto out_no_reloc;
1366         }
1367
1368         reloc = &sw_context->relocs[sw_context->cur_reloc++];
1369         reloc->location = ptr;
1370
1371         ret = vmw_bo_to_validate_list(sw_context, vmw_bo, false, &reloc->index);
1372         if (unlikely(ret != 0))
1373                 goto out_no_reloc;
1374
1375         *vmw_bo_p = vmw_bo;
1376         return 0;
1377
1378 out_no_reloc:
1379         vmw_dmabuf_unreference(&vmw_bo);
1380         *vmw_bo_p = NULL;
1381         return ret;
1382 }
1383
1384
1385
1386 /**
1387  * vmw_cmd_dx_define_query - validate a SVGA_3D_CMD_DX_DEFINE_QUERY command.
1388  *
1389  * @dev_priv: Pointer to a device private struct.
1390  * @sw_context: The software context used for this command submission.
1391  * @header: Pointer to the command header in the command stream.
1392  *
1393  * This function adds the new query into the query COTABLE
1394  */
1395 static int vmw_cmd_dx_define_query(struct vmw_private *dev_priv,
1396                                    struct vmw_sw_context *sw_context,
1397                                    SVGA3dCmdHeader *header)
1398 {
1399         struct vmw_dx_define_query_cmd {
1400                 SVGA3dCmdHeader header;
1401                 SVGA3dCmdDXDefineQuery q;
1402         } *cmd;
1403
1404         int    ret;
1405         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
1406         struct vmw_resource *cotable_res;
1407
1408
1409         if (ctx_node == NULL) {
1410                 DRM_ERROR("DX Context not set for query.\n");
1411                 return -EINVAL;
1412         }
1413
1414         cmd = container_of(header, struct vmw_dx_define_query_cmd, header);
1415
1416         if (cmd->q.type <  SVGA3D_QUERYTYPE_MIN ||
1417             cmd->q.type >= SVGA3D_QUERYTYPE_MAX)
1418                 return -EINVAL;
1419
1420         cotable_res = vmw_context_cotable(ctx_node->res, SVGA_COTABLE_DXQUERY);
1421         ret = vmw_cotable_notify(cotable_res, cmd->q.queryId);
1422         vmw_resource_unreference(&cotable_res);
1423
1424         return ret;
1425 }
1426
1427
1428
1429 /**
1430  * vmw_cmd_dx_bind_query - validate a SVGA_3D_CMD_DX_BIND_QUERY command.
1431  *
1432  * @dev_priv: Pointer to a device private struct.
1433  * @sw_context: The software context used for this command submission.
1434  * @header: Pointer to the command header in the command stream.
1435  *
1436  * The query bind operation will eventually associate the query ID
1437  * with its backing MOB.  In this function, we take the user mode
1438  * MOB ID and use vmw_translate_mob_ptr() to translate it to its
1439  * kernel mode equivalent.
1440  */
1441 static int vmw_cmd_dx_bind_query(struct vmw_private *dev_priv,
1442                                  struct vmw_sw_context *sw_context,
1443                                  SVGA3dCmdHeader *header)
1444 {
1445         struct vmw_dx_bind_query_cmd {
1446                 SVGA3dCmdHeader header;
1447                 SVGA3dCmdDXBindQuery q;
1448         } *cmd;
1449
1450         struct vmw_dma_buffer *vmw_bo;
1451         int    ret;
1452
1453
1454         cmd = container_of(header, struct vmw_dx_bind_query_cmd, header);
1455
1456         /*
1457          * Look up the buffer pointed to by q.mobid, put it on the relocation
1458          * list so its kernel mode MOB ID can be filled in later
1459          */
1460         ret = vmw_translate_mob_ptr(dev_priv, sw_context, &cmd->q.mobid,
1461                                     &vmw_bo);
1462
1463         if (ret != 0)
1464                 return ret;
1465
1466         sw_context->dx_query_mob = vmw_bo;
1467         sw_context->dx_query_ctx = sw_context->dx_ctx_node->res;
1468
1469         vmw_dmabuf_unreference(&vmw_bo);
1470
1471         return ret;
1472 }
1473
1474
1475
1476 /**
1477  * vmw_cmd_begin_gb_query - validate a  SVGA_3D_CMD_BEGIN_GB_QUERY command.
1478  *
1479  * @dev_priv: Pointer to a device private struct.
1480  * @sw_context: The software context used for this command submission.
1481  * @header: Pointer to the command header in the command stream.
1482  */
1483 static int vmw_cmd_begin_gb_query(struct vmw_private *dev_priv,
1484                                   struct vmw_sw_context *sw_context,
1485                                   SVGA3dCmdHeader *header)
1486 {
1487         struct vmw_begin_gb_query_cmd {
1488                 SVGA3dCmdHeader header;
1489                 SVGA3dCmdBeginGBQuery q;
1490         } *cmd;
1491
1492         cmd = container_of(header, struct vmw_begin_gb_query_cmd,
1493                            header);
1494
1495         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
1496                                  user_context_converter, &cmd->q.cid,
1497                                  NULL);
1498 }
1499
1500 /**
1501  * vmw_cmd_begin_query - validate a  SVGA_3D_CMD_BEGIN_QUERY command.
1502  *
1503  * @dev_priv: Pointer to a device private struct.
1504  * @sw_context: The software context used for this command submission.
1505  * @header: Pointer to the command header in the command stream.
1506  */
1507 static int vmw_cmd_begin_query(struct vmw_private *dev_priv,
1508                                struct vmw_sw_context *sw_context,
1509                                SVGA3dCmdHeader *header)
1510 {
1511         struct vmw_begin_query_cmd {
1512                 SVGA3dCmdHeader header;
1513                 SVGA3dCmdBeginQuery q;
1514         } *cmd;
1515
1516         cmd = container_of(header, struct vmw_begin_query_cmd,
1517                            header);
1518
1519         if (unlikely(dev_priv->has_mob)) {
1520                 struct {
1521                         SVGA3dCmdHeader header;
1522                         SVGA3dCmdBeginGBQuery q;
1523                 } gb_cmd;
1524
1525                 BUG_ON(sizeof(gb_cmd) != sizeof(*cmd));
1526
1527                 gb_cmd.header.id = SVGA_3D_CMD_BEGIN_GB_QUERY;
1528                 gb_cmd.header.size = cmd->header.size;
1529                 gb_cmd.q.cid = cmd->q.cid;
1530                 gb_cmd.q.type = cmd->q.type;
1531
1532                 memcpy(cmd, &gb_cmd, sizeof(*cmd));
1533                 return vmw_cmd_begin_gb_query(dev_priv, sw_context, header);
1534         }
1535
1536         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
1537                                  user_context_converter, &cmd->q.cid,
1538                                  NULL);
1539 }
1540
1541 /**
1542  * vmw_cmd_end_gb_query - validate a  SVGA_3D_CMD_END_GB_QUERY command.
1543  *
1544  * @dev_priv: Pointer to a device private struct.
1545  * @sw_context: The software context used for this command submission.
1546  * @header: Pointer to the command header in the command stream.
1547  */
1548 static int vmw_cmd_end_gb_query(struct vmw_private *dev_priv,
1549                                 struct vmw_sw_context *sw_context,
1550                                 SVGA3dCmdHeader *header)
1551 {
1552         struct vmw_dma_buffer *vmw_bo;
1553         struct vmw_query_cmd {
1554                 SVGA3dCmdHeader header;
1555                 SVGA3dCmdEndGBQuery q;
1556         } *cmd;
1557         int ret;
1558
1559         cmd = container_of(header, struct vmw_query_cmd, header);
1560         ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
1561         if (unlikely(ret != 0))
1562                 return ret;
1563
1564         ret = vmw_translate_mob_ptr(dev_priv, sw_context,
1565                                     &cmd->q.mobid,
1566                                     &vmw_bo);
1567         if (unlikely(ret != 0))
1568                 return ret;
1569
1570         ret = vmw_query_bo_switch_prepare(dev_priv, vmw_bo, sw_context);
1571
1572         vmw_dmabuf_unreference(&vmw_bo);
1573         return ret;
1574 }
1575
1576 /**
1577  * vmw_cmd_end_query - validate a  SVGA_3D_CMD_END_QUERY command.
1578  *
1579  * @dev_priv: Pointer to a device private struct.
1580  * @sw_context: The software context used for this command submission.
1581  * @header: Pointer to the command header in the command stream.
1582  */
1583 static int vmw_cmd_end_query(struct vmw_private *dev_priv,
1584                              struct vmw_sw_context *sw_context,
1585                              SVGA3dCmdHeader *header)
1586 {
1587         struct vmw_dma_buffer *vmw_bo;
1588         struct vmw_query_cmd {
1589                 SVGA3dCmdHeader header;
1590                 SVGA3dCmdEndQuery q;
1591         } *cmd;
1592         int ret;
1593
1594         cmd = container_of(header, struct vmw_query_cmd, header);
1595         if (dev_priv->has_mob) {
1596                 struct {
1597                         SVGA3dCmdHeader header;
1598                         SVGA3dCmdEndGBQuery q;
1599                 } gb_cmd;
1600
1601                 BUG_ON(sizeof(gb_cmd) != sizeof(*cmd));
1602
1603                 gb_cmd.header.id = SVGA_3D_CMD_END_GB_QUERY;
1604                 gb_cmd.header.size = cmd->header.size;
1605                 gb_cmd.q.cid = cmd->q.cid;
1606                 gb_cmd.q.type = cmd->q.type;
1607                 gb_cmd.q.mobid = cmd->q.guestResult.gmrId;
1608                 gb_cmd.q.offset = cmd->q.guestResult.offset;
1609
1610                 memcpy(cmd, &gb_cmd, sizeof(*cmd));
1611                 return vmw_cmd_end_gb_query(dev_priv, sw_context, header);
1612         }
1613
1614         ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
1615         if (unlikely(ret != 0))
1616                 return ret;
1617
1618         ret = vmw_translate_guest_ptr(dev_priv, sw_context,
1619                                       &cmd->q.guestResult,
1620                                       &vmw_bo);
1621         if (unlikely(ret != 0))
1622                 return ret;
1623
1624         ret = vmw_query_bo_switch_prepare(dev_priv, vmw_bo, sw_context);
1625
1626         vmw_dmabuf_unreference(&vmw_bo);
1627         return ret;
1628 }
1629
1630 /**
1631  * vmw_cmd_wait_gb_query - validate a  SVGA_3D_CMD_WAIT_GB_QUERY command.
1632  *
1633  * @dev_priv: Pointer to a device private struct.
1634  * @sw_context: The software context used for this command submission.
1635  * @header: Pointer to the command header in the command stream.
1636  */
1637 static int vmw_cmd_wait_gb_query(struct vmw_private *dev_priv,
1638                                  struct vmw_sw_context *sw_context,
1639                                  SVGA3dCmdHeader *header)
1640 {
1641         struct vmw_dma_buffer *vmw_bo;
1642         struct vmw_query_cmd {
1643                 SVGA3dCmdHeader header;
1644                 SVGA3dCmdWaitForGBQuery q;
1645         } *cmd;
1646         int ret;
1647
1648         cmd = container_of(header, struct vmw_query_cmd, header);
1649         ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
1650         if (unlikely(ret != 0))
1651                 return ret;
1652
1653         ret = vmw_translate_mob_ptr(dev_priv, sw_context,
1654                                     &cmd->q.mobid,
1655                                     &vmw_bo);
1656         if (unlikely(ret != 0))
1657                 return ret;
1658
1659         vmw_dmabuf_unreference(&vmw_bo);
1660         return 0;
1661 }
1662
1663 /**
1664  * vmw_cmd_wait_query - validate a  SVGA_3D_CMD_WAIT_QUERY command.
1665  *
1666  * @dev_priv: Pointer to a device private struct.
1667  * @sw_context: The software context used for this command submission.
1668  * @header: Pointer to the command header in the command stream.
1669  */
1670 static int vmw_cmd_wait_query(struct vmw_private *dev_priv,
1671                               struct vmw_sw_context *sw_context,
1672                               SVGA3dCmdHeader *header)
1673 {
1674         struct vmw_dma_buffer *vmw_bo;
1675         struct vmw_query_cmd {
1676                 SVGA3dCmdHeader header;
1677                 SVGA3dCmdWaitForQuery q;
1678         } *cmd;
1679         int ret;
1680
1681         cmd = container_of(header, struct vmw_query_cmd, header);
1682         if (dev_priv->has_mob) {
1683                 struct {
1684                         SVGA3dCmdHeader header;
1685                         SVGA3dCmdWaitForGBQuery q;
1686                 } gb_cmd;
1687
1688                 BUG_ON(sizeof(gb_cmd) != sizeof(*cmd));
1689
1690                 gb_cmd.header.id = SVGA_3D_CMD_WAIT_FOR_GB_QUERY;
1691                 gb_cmd.header.size = cmd->header.size;
1692                 gb_cmd.q.cid = cmd->q.cid;
1693                 gb_cmd.q.type = cmd->q.type;
1694                 gb_cmd.q.mobid = cmd->q.guestResult.gmrId;
1695                 gb_cmd.q.offset = cmd->q.guestResult.offset;
1696
1697                 memcpy(cmd, &gb_cmd, sizeof(*cmd));
1698                 return vmw_cmd_wait_gb_query(dev_priv, sw_context, header);
1699         }
1700
1701         ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
1702         if (unlikely(ret != 0))
1703                 return ret;
1704
1705         ret = vmw_translate_guest_ptr(dev_priv, sw_context,
1706                                       &cmd->q.guestResult,
1707                                       &vmw_bo);
1708         if (unlikely(ret != 0))
1709                 return ret;
1710
1711         vmw_dmabuf_unreference(&vmw_bo);
1712         return 0;
1713 }
1714
1715 static int vmw_cmd_dma(struct vmw_private *dev_priv,
1716                        struct vmw_sw_context *sw_context,
1717                        SVGA3dCmdHeader *header)
1718 {
1719         struct vmw_dma_buffer *vmw_bo = NULL;
1720         struct vmw_surface *srf = NULL;
1721         struct vmw_dma_cmd {
1722                 SVGA3dCmdHeader header;
1723                 SVGA3dCmdSurfaceDMA dma;
1724         } *cmd;
1725         int ret;
1726         SVGA3dCmdSurfaceDMASuffix *suffix;
1727         uint32_t bo_size;
1728
1729         cmd = container_of(header, struct vmw_dma_cmd, header);
1730         suffix = (SVGA3dCmdSurfaceDMASuffix *)((unsigned long) &cmd->dma +
1731                                                header->size - sizeof(*suffix));
1732
1733         /* Make sure device and verifier stays in sync. */
1734         if (unlikely(suffix->suffixSize != sizeof(*suffix))) {
1735                 DRM_ERROR("Invalid DMA suffix size.\n");
1736                 return -EINVAL;
1737         }
1738
1739         ret = vmw_translate_guest_ptr(dev_priv, sw_context,
1740                                       &cmd->dma.guest.ptr,
1741                                       &vmw_bo);
1742         if (unlikely(ret != 0))
1743                 return ret;
1744
1745         /* Make sure DMA doesn't cross BO boundaries. */
1746         bo_size = vmw_bo->base.num_pages * PAGE_SIZE;
1747         if (unlikely(cmd->dma.guest.ptr.offset > bo_size)) {
1748                 DRM_ERROR("Invalid DMA offset.\n");
1749                 return -EINVAL;
1750         }
1751
1752         bo_size -= cmd->dma.guest.ptr.offset;
1753         if (unlikely(suffix->maximumOffset > bo_size))
1754                 suffix->maximumOffset = bo_size;
1755
1756         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1757                                 user_surface_converter, &cmd->dma.host.sid,
1758                                 NULL);
1759         if (unlikely(ret != 0)) {
1760                 if (unlikely(ret != -ERESTARTSYS))
1761                         DRM_ERROR("could not find surface for DMA.\n");
1762                 goto out_no_surface;
1763         }
1764
1765         srf = vmw_res_to_srf(sw_context->res_cache[vmw_res_surface].res);
1766
1767         vmw_kms_cursor_snoop(srf, sw_context->fp->tfile, &vmw_bo->base,
1768                              header);
1769
1770 out_no_surface:
1771         vmw_dmabuf_unreference(&vmw_bo);
1772         return ret;
1773 }
1774
1775 static int vmw_cmd_draw(struct vmw_private *dev_priv,
1776                         struct vmw_sw_context *sw_context,
1777                         SVGA3dCmdHeader *header)
1778 {
1779         struct vmw_draw_cmd {
1780                 SVGA3dCmdHeader header;
1781                 SVGA3dCmdDrawPrimitives body;
1782         } *cmd;
1783         SVGA3dVertexDecl *decl = (SVGA3dVertexDecl *)(
1784                 (unsigned long)header + sizeof(*cmd));
1785         SVGA3dPrimitiveRange *range;
1786         uint32_t i;
1787         uint32_t maxnum;
1788         int ret;
1789
1790         ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
1791         if (unlikely(ret != 0))
1792                 return ret;
1793
1794         cmd = container_of(header, struct vmw_draw_cmd, header);
1795         maxnum = (header->size - sizeof(cmd->body)) / sizeof(*decl);
1796
1797         if (unlikely(cmd->body.numVertexDecls > maxnum)) {
1798                 DRM_ERROR("Illegal number of vertex declarations.\n");
1799                 return -EINVAL;
1800         }
1801
1802         for (i = 0; i < cmd->body.numVertexDecls; ++i, ++decl) {
1803                 ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1804                                         user_surface_converter,
1805                                         &decl->array.surfaceId, NULL);
1806                 if (unlikely(ret != 0))
1807                         return ret;
1808         }
1809
1810         maxnum = (header->size - sizeof(cmd->body) -
1811                   cmd->body.numVertexDecls * sizeof(*decl)) / sizeof(*range);
1812         if (unlikely(cmd->body.numRanges > maxnum)) {
1813                 DRM_ERROR("Illegal number of index ranges.\n");
1814                 return -EINVAL;
1815         }
1816
1817         range = (SVGA3dPrimitiveRange *) decl;
1818         for (i = 0; i < cmd->body.numRanges; ++i, ++range) {
1819                 ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1820                                         user_surface_converter,
1821                                         &range->indexArray.surfaceId, NULL);
1822                 if (unlikely(ret != 0))
1823                         return ret;
1824         }
1825         return 0;
1826 }
1827
1828
1829 static int vmw_cmd_tex_state(struct vmw_private *dev_priv,
1830                              struct vmw_sw_context *sw_context,
1831                              SVGA3dCmdHeader *header)
1832 {
1833         struct vmw_tex_state_cmd {
1834                 SVGA3dCmdHeader header;
1835                 SVGA3dCmdSetTextureState state;
1836         } *cmd;
1837
1838         SVGA3dTextureState *last_state = (SVGA3dTextureState *)
1839           ((unsigned long) header + header->size + sizeof(header));
1840         SVGA3dTextureState *cur_state = (SVGA3dTextureState *)
1841                 ((unsigned long) header + sizeof(struct vmw_tex_state_cmd));
1842         struct vmw_resource_val_node *ctx_node;
1843         struct vmw_resource_val_node *res_node;
1844         int ret;
1845
1846         cmd = container_of(header, struct vmw_tex_state_cmd,
1847                            header);
1848
1849         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
1850                                 user_context_converter, &cmd->state.cid,
1851                                 &ctx_node);
1852         if (unlikely(ret != 0))
1853                 return ret;
1854
1855         for (; cur_state < last_state; ++cur_state) {
1856                 if (likely(cur_state->name != SVGA3D_TS_BIND_TEXTURE))
1857                         continue;
1858
1859                 if (cur_state->stage >= SVGA3D_NUM_TEXTURE_UNITS) {
1860                         DRM_ERROR("Illegal texture/sampler unit %u.\n",
1861                                   (unsigned) cur_state->stage);
1862                         return -EINVAL;
1863                 }
1864
1865                 ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
1866                                         user_surface_converter,
1867                                         &cur_state->value, &res_node);
1868                 if (unlikely(ret != 0))
1869                         return ret;
1870
1871                 if (dev_priv->has_mob) {
1872                         struct vmw_ctx_bindinfo_tex binding;
1873
1874                         binding.bi.ctx = ctx_node->res;
1875                         binding.bi.res = res_node ? res_node->res : NULL;
1876                         binding.bi.bt = vmw_ctx_binding_tex;
1877                         binding.texture_stage = cur_state->stage;
1878                         vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
1879                                         0, binding.texture_stage);
1880                 }
1881         }
1882
1883         return 0;
1884 }
1885
1886 static int vmw_cmd_check_define_gmrfb(struct vmw_private *dev_priv,
1887                                       struct vmw_sw_context *sw_context,
1888                                       void *buf)
1889 {
1890         struct vmw_dma_buffer *vmw_bo;
1891         int ret;
1892
1893         struct {
1894                 uint32_t header;
1895                 SVGAFifoCmdDefineGMRFB body;
1896         } *cmd = buf;
1897
1898         ret = vmw_translate_guest_ptr(dev_priv, sw_context,
1899                                       &cmd->body.ptr,
1900                                       &vmw_bo);
1901         if (unlikely(ret != 0))
1902                 return ret;
1903
1904         vmw_dmabuf_unreference(&vmw_bo);
1905
1906         return ret;
1907 }
1908
1909
1910 /**
1911  * vmw_cmd_res_switch_backup - Utility function to handle backup buffer
1912  * switching
1913  *
1914  * @dev_priv: Pointer to a device private struct.
1915  * @sw_context: The software context being used for this batch.
1916  * @val_node: The validation node representing the resource.
1917  * @buf_id: Pointer to the user-space backup buffer handle in the command
1918  * stream.
1919  * @backup_offset: Offset of backup into MOB.
1920  *
1921  * This function prepares for registering a switch of backup buffers
1922  * in the resource metadata just prior to unreserving. It's basically a wrapper
1923  * around vmw_cmd_res_switch_backup with a different interface.
1924  */
1925 static int vmw_cmd_res_switch_backup(struct vmw_private *dev_priv,
1926                                      struct vmw_sw_context *sw_context,
1927                                      struct vmw_resource_val_node *val_node,
1928                                      uint32_t *buf_id,
1929                                      unsigned long backup_offset)
1930 {
1931         struct vmw_dma_buffer *dma_buf;
1932         int ret;
1933
1934         ret = vmw_translate_mob_ptr(dev_priv, sw_context, buf_id, &dma_buf);
1935         if (ret)
1936                 return ret;
1937
1938         val_node->switching_backup = true;
1939         if (val_node->first_usage)
1940                 val_node->no_buffer_needed = true;
1941
1942         vmw_dmabuf_unreference(&val_node->new_backup);
1943         val_node->new_backup = dma_buf;
1944         val_node->new_backup_offset = backup_offset;
1945
1946         return 0;
1947 }
1948
1949
1950 /**
1951  * vmw_cmd_switch_backup - Utility function to handle backup buffer switching
1952  *
1953  * @dev_priv: Pointer to a device private struct.
1954  * @sw_context: The software context being used for this batch.
1955  * @res_type: The resource type.
1956  * @converter: Information about user-space binding for this resource type.
1957  * @res_id: Pointer to the user-space resource handle in the command stream.
1958  * @buf_id: Pointer to the user-space backup buffer handle in the command
1959  * stream.
1960  * @backup_offset: Offset of backup into MOB.
1961  *
1962  * This function prepares for registering a switch of backup buffers
1963  * in the resource metadata just prior to unreserving. It's basically a wrapper
1964  * around vmw_cmd_res_switch_backup with a different interface.
1965  */
1966 static int vmw_cmd_switch_backup(struct vmw_private *dev_priv,
1967                                  struct vmw_sw_context *sw_context,
1968                                  enum vmw_res_type res_type,
1969                                  const struct vmw_user_resource_conv
1970                                  *converter,
1971                                  uint32_t *res_id,
1972                                  uint32_t *buf_id,
1973                                  unsigned long backup_offset)
1974 {
1975         struct vmw_resource_val_node *val_node;
1976         int ret;
1977
1978         ret = vmw_cmd_res_check(dev_priv, sw_context, res_type,
1979                                 converter, res_id, &val_node);
1980         if (ret)
1981                 return ret;
1982
1983         return vmw_cmd_res_switch_backup(dev_priv, sw_context, val_node,
1984                                          buf_id, backup_offset);
1985 }
1986
1987 /**
1988  * vmw_cmd_bind_gb_surface - Validate an SVGA_3D_CMD_BIND_GB_SURFACE
1989  * command
1990  *
1991  * @dev_priv: Pointer to a device private struct.
1992  * @sw_context: The software context being used for this batch.
1993  * @header: Pointer to the command header in the command stream.
1994  */
1995 static int vmw_cmd_bind_gb_surface(struct vmw_private *dev_priv,
1996                                    struct vmw_sw_context *sw_context,
1997                                    SVGA3dCmdHeader *header)
1998 {
1999         struct vmw_bind_gb_surface_cmd {
2000                 SVGA3dCmdHeader header;
2001                 SVGA3dCmdBindGBSurface body;
2002         } *cmd;
2003
2004         cmd = container_of(header, struct vmw_bind_gb_surface_cmd, header);
2005
2006         return vmw_cmd_switch_backup(dev_priv, sw_context, vmw_res_surface,
2007                                      user_surface_converter,
2008                                      &cmd->body.sid, &cmd->body.mobid,
2009                                      0);
2010 }
2011
2012 /**
2013  * vmw_cmd_update_gb_image - Validate an SVGA_3D_CMD_UPDATE_GB_IMAGE
2014  * command
2015  *
2016  * @dev_priv: Pointer to a device private struct.
2017  * @sw_context: The software context being used for this batch.
2018  * @header: Pointer to the command header in the command stream.
2019  */
2020 static int vmw_cmd_update_gb_image(struct vmw_private *dev_priv,
2021                                    struct vmw_sw_context *sw_context,
2022                                    SVGA3dCmdHeader *header)
2023 {
2024         struct vmw_gb_surface_cmd {
2025                 SVGA3dCmdHeader header;
2026                 SVGA3dCmdUpdateGBImage body;
2027         } *cmd;
2028
2029         cmd = container_of(header, struct vmw_gb_surface_cmd, header);
2030
2031         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2032                                  user_surface_converter,
2033                                  &cmd->body.image.sid, NULL);
2034 }
2035
2036 /**
2037  * vmw_cmd_update_gb_surface - Validate an SVGA_3D_CMD_UPDATE_GB_SURFACE
2038  * command
2039  *
2040  * @dev_priv: Pointer to a device private struct.
2041  * @sw_context: The software context being used for this batch.
2042  * @header: Pointer to the command header in the command stream.
2043  */
2044 static int vmw_cmd_update_gb_surface(struct vmw_private *dev_priv,
2045                                      struct vmw_sw_context *sw_context,
2046                                      SVGA3dCmdHeader *header)
2047 {
2048         struct vmw_gb_surface_cmd {
2049                 SVGA3dCmdHeader header;
2050                 SVGA3dCmdUpdateGBSurface body;
2051         } *cmd;
2052
2053         cmd = container_of(header, struct vmw_gb_surface_cmd, header);
2054
2055         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2056                                  user_surface_converter,
2057                                  &cmd->body.sid, NULL);
2058 }
2059
2060 /**
2061  * vmw_cmd_readback_gb_image - Validate an SVGA_3D_CMD_READBACK_GB_IMAGE
2062  * command
2063  *
2064  * @dev_priv: Pointer to a device private struct.
2065  * @sw_context: The software context being used for this batch.
2066  * @header: Pointer to the command header in the command stream.
2067  */
2068 static int vmw_cmd_readback_gb_image(struct vmw_private *dev_priv,
2069                                      struct vmw_sw_context *sw_context,
2070                                      SVGA3dCmdHeader *header)
2071 {
2072         struct vmw_gb_surface_cmd {
2073                 SVGA3dCmdHeader header;
2074                 SVGA3dCmdReadbackGBImage body;
2075         } *cmd;
2076
2077         cmd = container_of(header, struct vmw_gb_surface_cmd, header);
2078
2079         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2080                                  user_surface_converter,
2081                                  &cmd->body.image.sid, NULL);
2082 }
2083
2084 /**
2085  * vmw_cmd_readback_gb_surface - Validate an SVGA_3D_CMD_READBACK_GB_SURFACE
2086  * command
2087  *
2088  * @dev_priv: Pointer to a device private struct.
2089  * @sw_context: The software context being used for this batch.
2090  * @header: Pointer to the command header in the command stream.
2091  */
2092 static int vmw_cmd_readback_gb_surface(struct vmw_private *dev_priv,
2093                                        struct vmw_sw_context *sw_context,
2094                                        SVGA3dCmdHeader *header)
2095 {
2096         struct vmw_gb_surface_cmd {
2097                 SVGA3dCmdHeader header;
2098                 SVGA3dCmdReadbackGBSurface body;
2099         } *cmd;
2100
2101         cmd = container_of(header, struct vmw_gb_surface_cmd, header);
2102
2103         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2104                                  user_surface_converter,
2105                                  &cmd->body.sid, NULL);
2106 }
2107
2108 /**
2109  * vmw_cmd_invalidate_gb_image - Validate an SVGA_3D_CMD_INVALIDATE_GB_IMAGE
2110  * command
2111  *
2112  * @dev_priv: Pointer to a device private struct.
2113  * @sw_context: The software context being used for this batch.
2114  * @header: Pointer to the command header in the command stream.
2115  */
2116 static int vmw_cmd_invalidate_gb_image(struct vmw_private *dev_priv,
2117                                        struct vmw_sw_context *sw_context,
2118                                        SVGA3dCmdHeader *header)
2119 {
2120         struct vmw_gb_surface_cmd {
2121                 SVGA3dCmdHeader header;
2122                 SVGA3dCmdInvalidateGBImage body;
2123         } *cmd;
2124
2125         cmd = container_of(header, struct vmw_gb_surface_cmd, header);
2126
2127         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2128                                  user_surface_converter,
2129                                  &cmd->body.image.sid, NULL);
2130 }
2131
2132 /**
2133  * vmw_cmd_invalidate_gb_surface - Validate an
2134  * SVGA_3D_CMD_INVALIDATE_GB_SURFACE command
2135  *
2136  * @dev_priv: Pointer to a device private struct.
2137  * @sw_context: The software context being used for this batch.
2138  * @header: Pointer to the command header in the command stream.
2139  */
2140 static int vmw_cmd_invalidate_gb_surface(struct vmw_private *dev_priv,
2141                                          struct vmw_sw_context *sw_context,
2142                                          SVGA3dCmdHeader *header)
2143 {
2144         struct vmw_gb_surface_cmd {
2145                 SVGA3dCmdHeader header;
2146                 SVGA3dCmdInvalidateGBSurface body;
2147         } *cmd;
2148
2149         cmd = container_of(header, struct vmw_gb_surface_cmd, header);
2150
2151         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2152                                  user_surface_converter,
2153                                  &cmd->body.sid, NULL);
2154 }
2155
2156
2157 /**
2158  * vmw_cmd_shader_define - Validate an SVGA_3D_CMD_SHADER_DEFINE
2159  * command
2160  *
2161  * @dev_priv: Pointer to a device private struct.
2162  * @sw_context: The software context being used for this batch.
2163  * @header: Pointer to the command header in the command stream.
2164  */
2165 static int vmw_cmd_shader_define(struct vmw_private *dev_priv,
2166                                  struct vmw_sw_context *sw_context,
2167                                  SVGA3dCmdHeader *header)
2168 {
2169         struct vmw_shader_define_cmd {
2170                 SVGA3dCmdHeader header;
2171                 SVGA3dCmdDefineShader body;
2172         } *cmd;
2173         int ret;
2174         size_t size;
2175         struct vmw_resource_val_node *val;
2176
2177         cmd = container_of(header, struct vmw_shader_define_cmd,
2178                            header);
2179
2180         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
2181                                 user_context_converter, &cmd->body.cid,
2182                                 &val);
2183         if (unlikely(ret != 0))
2184                 return ret;
2185
2186         if (unlikely(!dev_priv->has_mob))
2187                 return 0;
2188
2189         size = cmd->header.size - sizeof(cmd->body);
2190         ret = vmw_compat_shader_add(dev_priv,
2191                                     vmw_context_res_man(val->res),
2192                                     cmd->body.shid, cmd + 1,
2193                                     cmd->body.type, size,
2194                                     &sw_context->staged_cmd_res);
2195         if (unlikely(ret != 0))
2196                 return ret;
2197
2198         return vmw_resource_relocation_add(&sw_context->res_relocations,
2199                                            NULL,
2200                                            vmw_ptr_diff(sw_context->buf_start,
2201                                                         &cmd->header.id),
2202                                            vmw_res_rel_nop);
2203 }
2204
2205 /**
2206  * vmw_cmd_shader_destroy - Validate an SVGA_3D_CMD_SHADER_DESTROY
2207  * command
2208  *
2209  * @dev_priv: Pointer to a device private struct.
2210  * @sw_context: The software context being used for this batch.
2211  * @header: Pointer to the command header in the command stream.
2212  */
2213 static int vmw_cmd_shader_destroy(struct vmw_private *dev_priv,
2214                                   struct vmw_sw_context *sw_context,
2215                                   SVGA3dCmdHeader *header)
2216 {
2217         struct vmw_shader_destroy_cmd {
2218                 SVGA3dCmdHeader header;
2219                 SVGA3dCmdDestroyShader body;
2220         } *cmd;
2221         int ret;
2222         struct vmw_resource_val_node *val;
2223
2224         cmd = container_of(header, struct vmw_shader_destroy_cmd,
2225                            header);
2226
2227         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
2228                                 user_context_converter, &cmd->body.cid,
2229                                 &val);
2230         if (unlikely(ret != 0))
2231                 return ret;
2232
2233         if (unlikely(!dev_priv->has_mob))
2234                 return 0;
2235
2236         ret = vmw_shader_remove(vmw_context_res_man(val->res),
2237                                 cmd->body.shid,
2238                                 cmd->body.type,
2239                                 &sw_context->staged_cmd_res);
2240         if (unlikely(ret != 0))
2241                 return ret;
2242
2243         return vmw_resource_relocation_add(&sw_context->res_relocations,
2244                                            NULL,
2245                                            vmw_ptr_diff(sw_context->buf_start,
2246                                                         &cmd->header.id),
2247                                            vmw_res_rel_nop);
2248 }
2249
2250 /**
2251  * vmw_cmd_set_shader - Validate an SVGA_3D_CMD_SET_SHADER
2252  * command
2253  *
2254  * @dev_priv: Pointer to a device private struct.
2255  * @sw_context: The software context being used for this batch.
2256  * @header: Pointer to the command header in the command stream.
2257  */
2258 static int vmw_cmd_set_shader(struct vmw_private *dev_priv,
2259                               struct vmw_sw_context *sw_context,
2260                               SVGA3dCmdHeader *header)
2261 {
2262         struct vmw_set_shader_cmd {
2263                 SVGA3dCmdHeader header;
2264                 SVGA3dCmdSetShader body;
2265         } *cmd;
2266         struct vmw_resource_val_node *ctx_node, *res_node = NULL;
2267         struct vmw_ctx_bindinfo_shader binding;
2268         struct vmw_resource *res = NULL;
2269         int ret;
2270
2271         cmd = container_of(header, struct vmw_set_shader_cmd,
2272                            header);
2273
2274         if (cmd->body.type >= SVGA3D_SHADERTYPE_PREDX_MAX) {
2275                 DRM_ERROR("Illegal shader type %u.\n",
2276                           (unsigned) cmd->body.type);
2277                 return -EINVAL;
2278         }
2279
2280         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
2281                                 user_context_converter, &cmd->body.cid,
2282                                 &ctx_node);
2283         if (unlikely(ret != 0))
2284                 return ret;
2285
2286         if (!dev_priv->has_mob)
2287                 return 0;
2288
2289         if (cmd->body.shid != SVGA3D_INVALID_ID) {
2290                 res = vmw_shader_lookup(vmw_context_res_man(ctx_node->res),
2291                                         cmd->body.shid,
2292                                         cmd->body.type);
2293
2294                 if (!IS_ERR(res)) {
2295                         ret = vmw_cmd_res_reloc_add(dev_priv, sw_context,
2296                                                     &cmd->body.shid, res,
2297                                                     &res_node);
2298                         vmw_resource_unreference(&res);
2299                         if (unlikely(ret != 0))
2300                                 return ret;
2301                 }
2302         }
2303
2304         if (!res_node) {
2305                 ret = vmw_cmd_res_check(dev_priv, sw_context,
2306                                         vmw_res_shader,
2307                                         user_shader_converter,
2308                                         &cmd->body.shid, &res_node);
2309                 if (unlikely(ret != 0))
2310                         return ret;
2311         }
2312
2313         binding.bi.ctx = ctx_node->res;
2314         binding.bi.res = res_node ? res_node->res : NULL;
2315         binding.bi.bt = vmw_ctx_binding_shader;
2316         binding.shader_slot = cmd->body.type - SVGA3D_SHADERTYPE_MIN;
2317         vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
2318                         binding.shader_slot, 0);
2319         return 0;
2320 }
2321
2322 /**
2323  * vmw_cmd_set_shader_const - Validate an SVGA_3D_CMD_SET_SHADER_CONST
2324  * command
2325  *
2326  * @dev_priv: Pointer to a device private struct.
2327  * @sw_context: The software context being used for this batch.
2328  * @header: Pointer to the command header in the command stream.
2329  */
2330 static int vmw_cmd_set_shader_const(struct vmw_private *dev_priv,
2331                                     struct vmw_sw_context *sw_context,
2332                                     SVGA3dCmdHeader *header)
2333 {
2334         struct vmw_set_shader_const_cmd {
2335                 SVGA3dCmdHeader header;
2336                 SVGA3dCmdSetShaderConst body;
2337         } *cmd;
2338         int ret;
2339
2340         cmd = container_of(header, struct vmw_set_shader_const_cmd,
2341                            header);
2342
2343         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
2344                                 user_context_converter, &cmd->body.cid,
2345                                 NULL);
2346         if (unlikely(ret != 0))
2347                 return ret;
2348
2349         if (dev_priv->has_mob)
2350                 header->id = SVGA_3D_CMD_SET_GB_SHADERCONSTS_INLINE;
2351
2352         return 0;
2353 }
2354
2355 /**
2356  * vmw_cmd_bind_gb_shader - Validate an SVGA_3D_CMD_BIND_GB_SHADER
2357  * command
2358  *
2359  * @dev_priv: Pointer to a device private struct.
2360  * @sw_context: The software context being used for this batch.
2361  * @header: Pointer to the command header in the command stream.
2362  */
2363 static int vmw_cmd_bind_gb_shader(struct vmw_private *dev_priv,
2364                                   struct vmw_sw_context *sw_context,
2365                                   SVGA3dCmdHeader *header)
2366 {
2367         struct vmw_bind_gb_shader_cmd {
2368                 SVGA3dCmdHeader header;
2369                 SVGA3dCmdBindGBShader body;
2370         } *cmd;
2371
2372         cmd = container_of(header, struct vmw_bind_gb_shader_cmd,
2373                            header);
2374
2375         return vmw_cmd_switch_backup(dev_priv, sw_context, vmw_res_shader,
2376                                      user_shader_converter,
2377                                      &cmd->body.shid, &cmd->body.mobid,
2378                                      cmd->body.offsetInBytes);
2379 }
2380
2381 /**
2382  * vmw_cmd_dx_set_single_constant_buffer - Validate an
2383  * SVGA_3D_CMD_DX_SET_SINGLE_CONSTANT_BUFFER command.
2384  *
2385  * @dev_priv: Pointer to a device private struct.
2386  * @sw_context: The software context being used for this batch.
2387  * @header: Pointer to the command header in the command stream.
2388  */
2389 static int
2390 vmw_cmd_dx_set_single_constant_buffer(struct vmw_private *dev_priv,
2391                                       struct vmw_sw_context *sw_context,
2392                                       SVGA3dCmdHeader *header)
2393 {
2394         struct {
2395                 SVGA3dCmdHeader header;
2396                 SVGA3dCmdDXSetSingleConstantBuffer body;
2397         } *cmd;
2398         struct vmw_resource_val_node *res_node = NULL;
2399         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
2400         struct vmw_ctx_bindinfo_cb binding;
2401         int ret;
2402
2403         if (unlikely(ctx_node == NULL)) {
2404                 DRM_ERROR("DX Context not set.\n");
2405                 return -EINVAL;
2406         }
2407
2408         cmd = container_of(header, typeof(*cmd), header);
2409         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2410                                 user_surface_converter,
2411                                 &cmd->body.sid, &res_node);
2412         if (unlikely(ret != 0))
2413                 return ret;
2414
2415         binding.bi.ctx = ctx_node->res;
2416         binding.bi.res = res_node ? res_node->res : NULL;
2417         binding.bi.bt = vmw_ctx_binding_cb;
2418         binding.shader_slot = cmd->body.type - SVGA3D_SHADERTYPE_MIN;
2419         binding.offset = cmd->body.offsetInBytes;
2420         binding.size = cmd->body.sizeInBytes;
2421         binding.slot = cmd->body.slot;
2422
2423         if (binding.shader_slot >= SVGA3D_NUM_SHADERTYPE_DX10 ||
2424             binding.slot >= SVGA3D_DX_MAX_CONSTBUFFERS) {
2425                 DRM_ERROR("Illegal const buffer shader %u slot %u.\n",
2426                           (unsigned) cmd->body.type,
2427                           (unsigned) binding.slot);
2428                 return -EINVAL;
2429         }
2430
2431         vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
2432                         binding.shader_slot, binding.slot);
2433
2434         return 0;
2435 }
2436
2437 /**
2438  * vmw_cmd_dx_set_shader_res - Validate an
2439  * SVGA_3D_CMD_DX_SET_SHADER_RESOURCES command
2440  *
2441  * @dev_priv: Pointer to a device private struct.
2442  * @sw_context: The software context being used for this batch.
2443  * @header: Pointer to the command header in the command stream.
2444  */
2445 static int vmw_cmd_dx_set_shader_res(struct vmw_private *dev_priv,
2446                                      struct vmw_sw_context *sw_context,
2447                                      SVGA3dCmdHeader *header)
2448 {
2449         struct {
2450                 SVGA3dCmdHeader header;
2451                 SVGA3dCmdDXSetShaderResources body;
2452         } *cmd = container_of(header, typeof(*cmd), header);
2453         u32 num_sr_view = (cmd->header.size - sizeof(cmd->body)) /
2454                 sizeof(SVGA3dShaderResourceViewId);
2455
2456         if ((u64) cmd->body.startView + (u64) num_sr_view >
2457             (u64) SVGA3D_DX_MAX_SRVIEWS ||
2458             cmd->body.type >= SVGA3D_SHADERTYPE_DX10_MAX) {
2459                 DRM_ERROR("Invalid shader binding.\n");
2460                 return -EINVAL;
2461         }
2462
2463         return vmw_view_bindings_add(sw_context, vmw_view_sr,
2464                                      vmw_ctx_binding_sr,
2465                                      cmd->body.type - SVGA3D_SHADERTYPE_MIN,
2466                                      (void *) &cmd[1], num_sr_view,
2467                                      cmd->body.startView);
2468 }
2469
2470 /**
2471  * vmw_cmd_dx_set_shader - Validate an SVGA_3D_CMD_DX_SET_SHADER
2472  * command
2473  *
2474  * @dev_priv: Pointer to a device private struct.
2475  * @sw_context: The software context being used for this batch.
2476  * @header: Pointer to the command header in the command stream.
2477  */
2478 static int vmw_cmd_dx_set_shader(struct vmw_private *dev_priv,
2479                                  struct vmw_sw_context *sw_context,
2480                                  SVGA3dCmdHeader *header)
2481 {
2482         struct {
2483                 SVGA3dCmdHeader header;
2484                 SVGA3dCmdDXSetShader body;
2485         } *cmd;
2486         struct vmw_resource *res = NULL;
2487         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
2488         struct vmw_ctx_bindinfo_shader binding;
2489         int ret = 0;
2490
2491         if (unlikely(ctx_node == NULL)) {
2492                 DRM_ERROR("DX Context not set.\n");
2493                 return -EINVAL;
2494         }
2495
2496         cmd = container_of(header, typeof(*cmd), header);
2497
2498         if (cmd->body.type >= SVGA3D_SHADERTYPE_DX10_MAX ||
2499             cmd->body.type < SVGA3D_SHADERTYPE_MIN) {
2500                 DRM_ERROR("Illegal shader type %u.\n",
2501                           (unsigned) cmd->body.type);
2502                 return -EINVAL;
2503         }
2504
2505         if (cmd->body.shaderId != SVGA3D_INVALID_ID) {
2506                 res = vmw_shader_lookup(sw_context->man, cmd->body.shaderId, 0);
2507                 if (IS_ERR(res)) {
2508                         DRM_ERROR("Could not find shader for binding.\n");
2509                         return PTR_ERR(res);
2510                 }
2511
2512                 ret = vmw_resource_val_add(sw_context, res, NULL);
2513                 if (ret)
2514                         goto out_unref;
2515         }
2516
2517         binding.bi.ctx = ctx_node->res;
2518         binding.bi.res = res;
2519         binding.bi.bt = vmw_ctx_binding_dx_shader;
2520         binding.shader_slot = cmd->body.type - SVGA3D_SHADERTYPE_MIN;
2521
2522         vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
2523                         binding.shader_slot, 0);
2524 out_unref:
2525         if (res)
2526                 vmw_resource_unreference(&res);
2527
2528         return ret;
2529 }
2530
2531 /**
2532  * vmw_cmd_dx_set_vertex_buffers - Validates an
2533  * SVGA_3D_CMD_DX_SET_VERTEX_BUFFERS command
2534  *
2535  * @dev_priv: Pointer to a device private struct.
2536  * @sw_context: The software context being used for this batch.
2537  * @header: Pointer to the command header in the command stream.
2538  */
2539 static int vmw_cmd_dx_set_vertex_buffers(struct vmw_private *dev_priv,
2540                                          struct vmw_sw_context *sw_context,
2541                                          SVGA3dCmdHeader *header)
2542 {
2543         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
2544         struct vmw_ctx_bindinfo_vb binding;
2545         struct vmw_resource_val_node *res_node;
2546         struct {
2547                 SVGA3dCmdHeader header;
2548                 SVGA3dCmdDXSetVertexBuffers body;
2549                 SVGA3dVertexBuffer buf[];
2550         } *cmd;
2551         int i, ret, num;
2552
2553         if (unlikely(ctx_node == NULL)) {
2554                 DRM_ERROR("DX Context not set.\n");
2555                 return -EINVAL;
2556         }
2557
2558         cmd = container_of(header, typeof(*cmd), header);
2559         num = (cmd->header.size - sizeof(cmd->body)) /
2560                 sizeof(SVGA3dVertexBuffer);
2561         if ((u64)num + (u64)cmd->body.startBuffer >
2562             (u64)SVGA3D_DX_MAX_VERTEXBUFFERS) {
2563                 DRM_ERROR("Invalid number of vertex buffers.\n");
2564                 return -EINVAL;
2565         }
2566
2567         for (i = 0; i < num; i++) {
2568                 ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2569                                         user_surface_converter,
2570                                         &cmd->buf[i].sid, &res_node);
2571                 if (unlikely(ret != 0))
2572                         return ret;
2573
2574                 binding.bi.ctx = ctx_node->res;
2575                 binding.bi.bt = vmw_ctx_binding_vb;
2576                 binding.bi.res = ((res_node) ? res_node->res : NULL);
2577                 binding.offset = cmd->buf[i].offset;
2578                 binding.stride = cmd->buf[i].stride;
2579                 binding.slot = i + cmd->body.startBuffer;
2580
2581                 vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
2582                                 0, binding.slot);
2583         }
2584
2585         return 0;
2586 }
2587
2588 /**
2589  * vmw_cmd_dx_ia_set_vertex_buffers - Validate an
2590  * SVGA_3D_CMD_DX_IA_SET_INDEX_BUFFER command.
2591  *
2592  * @dev_priv: Pointer to a device private struct.
2593  * @sw_context: The software context being used for this batch.
2594  * @header: Pointer to the command header in the command stream.
2595  */
2596 static int vmw_cmd_dx_set_index_buffer(struct vmw_private *dev_priv,
2597                                        struct vmw_sw_context *sw_context,
2598                                        SVGA3dCmdHeader *header)
2599 {
2600         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
2601         struct vmw_ctx_bindinfo_ib binding;
2602         struct vmw_resource_val_node *res_node;
2603         struct {
2604                 SVGA3dCmdHeader header;
2605                 SVGA3dCmdDXSetIndexBuffer body;
2606         } *cmd;
2607         int ret;
2608
2609         if (unlikely(ctx_node == NULL)) {
2610                 DRM_ERROR("DX Context not set.\n");
2611                 return -EINVAL;
2612         }
2613
2614         cmd = container_of(header, typeof(*cmd), header);
2615         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2616                                 user_surface_converter,
2617                                 &cmd->body.sid, &res_node);
2618         if (unlikely(ret != 0))
2619                 return ret;
2620
2621         binding.bi.ctx = ctx_node->res;
2622         binding.bi.res = ((res_node) ? res_node->res : NULL);
2623         binding.bi.bt = vmw_ctx_binding_ib;
2624         binding.offset = cmd->body.offset;
2625         binding.format = cmd->body.format;
2626
2627         vmw_binding_add(ctx_node->staged_bindings, &binding.bi, 0, 0);
2628
2629         return 0;
2630 }
2631
2632 /**
2633  * vmw_cmd_dx_set_rendertarget - Validate an
2634  * SVGA_3D_CMD_DX_SET_RENDERTARGETS command
2635  *
2636  * @dev_priv: Pointer to a device private struct.
2637  * @sw_context: The software context being used for this batch.
2638  * @header: Pointer to the command header in the command stream.
2639  */
2640 static int vmw_cmd_dx_set_rendertargets(struct vmw_private *dev_priv,
2641                                         struct vmw_sw_context *sw_context,
2642                                         SVGA3dCmdHeader *header)
2643 {
2644         struct {
2645                 SVGA3dCmdHeader header;
2646                 SVGA3dCmdDXSetRenderTargets body;
2647         } *cmd = container_of(header, typeof(*cmd), header);
2648         int ret;
2649         u32 num_rt_view = (cmd->header.size - sizeof(cmd->body)) /
2650                 sizeof(SVGA3dRenderTargetViewId);
2651
2652         if (num_rt_view > SVGA3D_MAX_SIMULTANEOUS_RENDER_TARGETS) {
2653                 DRM_ERROR("Invalid DX Rendertarget binding.\n");
2654                 return -EINVAL;
2655         }
2656
2657         ret = vmw_view_bindings_add(sw_context, vmw_view_ds,
2658                                     vmw_ctx_binding_ds, 0,
2659                                     &cmd->body.depthStencilViewId, 1, 0);
2660         if (ret)
2661                 return ret;
2662
2663         return vmw_view_bindings_add(sw_context, vmw_view_rt,
2664                                      vmw_ctx_binding_dx_rt, 0,
2665                                      (void *)&cmd[1], num_rt_view, 0);
2666 }
2667
2668 /**
2669  * vmw_cmd_dx_clear_rendertarget_view - Validate an
2670  * SVGA_3D_CMD_DX_CLEAR_RENDERTARGET_VIEW command
2671  *
2672  * @dev_priv: Pointer to a device private struct.
2673  * @sw_context: The software context being used for this batch.
2674  * @header: Pointer to the command header in the command stream.
2675  */
2676 static int vmw_cmd_dx_clear_rendertarget_view(struct vmw_private *dev_priv,
2677                                               struct vmw_sw_context *sw_context,
2678                                               SVGA3dCmdHeader *header)
2679 {
2680         struct {
2681                 SVGA3dCmdHeader header;
2682                 SVGA3dCmdDXClearRenderTargetView body;
2683         } *cmd = container_of(header, typeof(*cmd), header);
2684
2685         return vmw_view_id_val_add(sw_context, vmw_view_rt,
2686                                    cmd->body.renderTargetViewId);
2687 }
2688
2689 /**
2690  * vmw_cmd_dx_clear_rendertarget_view - Validate an
2691  * SVGA_3D_CMD_DX_CLEAR_DEPTHSTENCIL_VIEW command
2692  *
2693  * @dev_priv: Pointer to a device private struct.
2694  * @sw_context: The software context being used for this batch.
2695  * @header: Pointer to the command header in the command stream.
2696  */
2697 static int vmw_cmd_dx_clear_depthstencil_view(struct vmw_private *dev_priv,
2698                                               struct vmw_sw_context *sw_context,
2699                                               SVGA3dCmdHeader *header)
2700 {
2701         struct {
2702                 SVGA3dCmdHeader header;
2703                 SVGA3dCmdDXClearDepthStencilView body;
2704         } *cmd = container_of(header, typeof(*cmd), header);
2705
2706         return vmw_view_id_val_add(sw_context, vmw_view_ds,
2707                                    cmd->body.depthStencilViewId);
2708 }
2709
2710 static int vmw_cmd_dx_view_define(struct vmw_private *dev_priv,
2711                                   struct vmw_sw_context *sw_context,
2712                                   SVGA3dCmdHeader *header)
2713 {
2714         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
2715         struct vmw_resource_val_node *srf_node;
2716         struct vmw_resource *res;
2717         enum vmw_view_type view_type;
2718         int ret;
2719         /*
2720          * This is based on the fact that all affected define commands have
2721          * the same initial command body layout.
2722          */
2723         struct {
2724                 SVGA3dCmdHeader header;
2725                 uint32 defined_id;
2726                 uint32 sid;
2727         } *cmd;
2728
2729         if (unlikely(ctx_node == NULL)) {
2730                 DRM_ERROR("DX Context not set.\n");
2731                 return -EINVAL;
2732         }
2733
2734         view_type = vmw_view_cmd_to_type(header->id);
2735         if (view_type == vmw_view_max)
2736                 return -EINVAL;
2737         cmd = container_of(header, typeof(*cmd), header);
2738         if (unlikely(cmd->sid == SVGA3D_INVALID_ID)) {
2739                 DRM_ERROR("Invalid surface id.\n");
2740                 return -EINVAL;
2741         }
2742         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2743                                 user_surface_converter,
2744                                 &cmd->sid, &srf_node);
2745         if (unlikely(ret != 0))
2746                 return ret;
2747
2748         res = vmw_context_cotable(ctx_node->res, vmw_view_cotables[view_type]);
2749         ret = vmw_cotable_notify(res, cmd->defined_id);
2750         vmw_resource_unreference(&res);
2751         if (unlikely(ret != 0))
2752                 return ret;
2753
2754         return vmw_view_add(sw_context->man,
2755                             ctx_node->res,
2756                             srf_node->res,
2757                             view_type,
2758                             cmd->defined_id,
2759                             header,
2760                             header->size + sizeof(*header),
2761                             &sw_context->staged_cmd_res);
2762 }
2763
2764 /**
2765  * vmw_cmd_dx_set_so_targets - Validate an
2766  * SVGA_3D_CMD_DX_SET_SOTARGETS command.
2767  *
2768  * @dev_priv: Pointer to a device private struct.
2769  * @sw_context: The software context being used for this batch.
2770  * @header: Pointer to the command header in the command stream.
2771  */
2772 static int vmw_cmd_dx_set_so_targets(struct vmw_private *dev_priv,
2773                                      struct vmw_sw_context *sw_context,
2774                                      SVGA3dCmdHeader *header)
2775 {
2776         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
2777         struct vmw_ctx_bindinfo_so binding;
2778         struct vmw_resource_val_node *res_node;
2779         struct {
2780                 SVGA3dCmdHeader header;
2781                 SVGA3dCmdDXSetSOTargets body;
2782                 SVGA3dSoTarget targets[];
2783         } *cmd;
2784         int i, ret, num;
2785
2786         if (unlikely(ctx_node == NULL)) {
2787                 DRM_ERROR("DX Context not set.\n");
2788                 return -EINVAL;
2789         }
2790
2791         cmd = container_of(header, typeof(*cmd), header);
2792         num = (cmd->header.size - sizeof(cmd->body)) /
2793                 sizeof(SVGA3dSoTarget);
2794
2795         if (num > SVGA3D_DX_MAX_SOTARGETS) {
2796                 DRM_ERROR("Invalid DX SO binding.\n");
2797                 return -EINVAL;
2798         }
2799
2800         for (i = 0; i < num; i++) {
2801                 ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2802                                         user_surface_converter,
2803                                         &cmd->targets[i].sid, &res_node);
2804                 if (unlikely(ret != 0))
2805                         return ret;
2806
2807                 binding.bi.ctx = ctx_node->res;
2808                 binding.bi.res = ((res_node) ? res_node->res : NULL);
2809                 binding.bi.bt = vmw_ctx_binding_so,
2810                 binding.offset = cmd->targets[i].offset;
2811                 binding.size = cmd->targets[i].sizeInBytes;
2812                 binding.slot = i;
2813
2814                 vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
2815                                 0, binding.slot);
2816         }
2817
2818         return 0;
2819 }
2820
2821 static int vmw_cmd_dx_so_define(struct vmw_private *dev_priv,
2822                                 struct vmw_sw_context *sw_context,
2823                                 SVGA3dCmdHeader *header)
2824 {
2825         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
2826         struct vmw_resource *res;
2827         /*
2828          * This is based on the fact that all affected define commands have
2829          * the same initial command body layout.
2830          */
2831         struct {
2832                 SVGA3dCmdHeader header;
2833                 uint32 defined_id;
2834         } *cmd;
2835         enum vmw_so_type so_type;
2836         int ret;
2837
2838         if (unlikely(ctx_node == NULL)) {
2839                 DRM_ERROR("DX Context not set.\n");
2840                 return -EINVAL;
2841         }
2842
2843         so_type = vmw_so_cmd_to_type(header->id);
2844         res = vmw_context_cotable(ctx_node->res, vmw_so_cotables[so_type]);
2845         cmd = container_of(header, typeof(*cmd), header);
2846         ret = vmw_cotable_notify(res, cmd->defined_id);
2847         vmw_resource_unreference(&res);
2848
2849         return ret;
2850 }
2851
2852 /**
2853  * vmw_cmd_dx_check_subresource - Validate an
2854  * SVGA_3D_CMD_DX_[X]_SUBRESOURCE command
2855  *
2856  * @dev_priv: Pointer to a device private struct.
2857  * @sw_context: The software context being used for this batch.
2858  * @header: Pointer to the command header in the command stream.
2859  */
2860 static int vmw_cmd_dx_check_subresource(struct vmw_private *dev_priv,
2861                                         struct vmw_sw_context *sw_context,
2862                                         SVGA3dCmdHeader *header)
2863 {
2864         struct {
2865                 SVGA3dCmdHeader header;
2866                 union {
2867                         SVGA3dCmdDXReadbackSubResource r_body;
2868                         SVGA3dCmdDXInvalidateSubResource i_body;
2869                         SVGA3dCmdDXUpdateSubResource u_body;
2870                         SVGA3dSurfaceId sid;
2871                 };
2872         } *cmd;
2873
2874         BUILD_BUG_ON(offsetof(typeof(*cmd), r_body.sid) !=
2875                      offsetof(typeof(*cmd), sid));
2876         BUILD_BUG_ON(offsetof(typeof(*cmd), i_body.sid) !=
2877                      offsetof(typeof(*cmd), sid));
2878         BUILD_BUG_ON(offsetof(typeof(*cmd), u_body.sid) !=
2879                      offsetof(typeof(*cmd), sid));
2880
2881         cmd = container_of(header, typeof(*cmd), header);
2882
2883         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
2884                                  user_surface_converter,
2885                                  &cmd->sid, NULL);
2886 }
2887
2888 static int vmw_cmd_dx_cid_check(struct vmw_private *dev_priv,
2889                                 struct vmw_sw_context *sw_context,
2890                                 SVGA3dCmdHeader *header)
2891 {
2892         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
2893
2894         if (unlikely(ctx_node == NULL)) {
2895                 DRM_ERROR("DX Context not set.\n");
2896                 return -EINVAL;
2897         }
2898
2899         return 0;
2900 }
2901
2902 /**
2903  * vmw_cmd_dx_view_remove - validate a view remove command and
2904  * schedule the view resource for removal.
2905  *
2906  * @dev_priv: Pointer to a device private struct.
2907  * @sw_context: The software context being used for this batch.
2908  * @header: Pointer to the command header in the command stream.
2909  *
2910  * Check that the view exists, and if it was not created using this
2911  * command batch, conditionally make this command a NOP.
2912  */
2913 static int vmw_cmd_dx_view_remove(struct vmw_private *dev_priv,
2914                                   struct vmw_sw_context *sw_context,
2915                                   SVGA3dCmdHeader *header)
2916 {
2917         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
2918         struct {
2919                 SVGA3dCmdHeader header;
2920                 union vmw_view_destroy body;
2921         } *cmd = container_of(header, typeof(*cmd), header);
2922         enum vmw_view_type view_type = vmw_view_cmd_to_type(header->id);
2923         struct vmw_resource *view;
2924         int ret;
2925
2926         if (!ctx_node) {
2927                 DRM_ERROR("DX Context not set.\n");
2928                 return -EINVAL;
2929         }
2930
2931         ret = vmw_view_remove(sw_context->man,
2932                               cmd->body.view_id, view_type,
2933                               &sw_context->staged_cmd_res,
2934                               &view);
2935         if (ret || !view)
2936                 return ret;
2937
2938         /*
2939          * If the view wasn't created during this command batch, it might
2940          * have been removed due to a context swapout, so add a
2941          * relocation to conditionally make this command a NOP to avoid
2942          * device errors.
2943          */
2944         return vmw_resource_relocation_add(&sw_context->res_relocations,
2945                                            view,
2946                                            vmw_ptr_diff(sw_context->buf_start,
2947                                                         &cmd->header.id),
2948                                            vmw_res_rel_cond_nop);
2949 }
2950
2951 /**
2952  * vmw_cmd_dx_define_shader - Validate an SVGA_3D_CMD_DX_DEFINE_SHADER
2953  * command
2954  *
2955  * @dev_priv: Pointer to a device private struct.
2956  * @sw_context: The software context being used for this batch.
2957  * @header: Pointer to the command header in the command stream.
2958  */
2959 static int vmw_cmd_dx_define_shader(struct vmw_private *dev_priv,
2960                                     struct vmw_sw_context *sw_context,
2961                                     SVGA3dCmdHeader *header)
2962 {
2963         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
2964         struct vmw_resource *res;
2965         struct {
2966                 SVGA3dCmdHeader header;
2967                 SVGA3dCmdDXDefineShader body;
2968         } *cmd = container_of(header, typeof(*cmd), header);
2969         int ret;
2970
2971         if (!ctx_node) {
2972                 DRM_ERROR("DX Context not set.\n");
2973                 return -EINVAL;
2974         }
2975
2976         res = vmw_context_cotable(ctx_node->res, SVGA_COTABLE_DXSHADER);
2977         ret = vmw_cotable_notify(res, cmd->body.shaderId);
2978         vmw_resource_unreference(&res);
2979         if (ret)
2980                 return ret;
2981
2982         return vmw_dx_shader_add(sw_context->man, ctx_node->res,
2983                                  cmd->body.shaderId, cmd->body.type,
2984                                  &sw_context->staged_cmd_res);
2985 }
2986
2987 /**
2988  * vmw_cmd_dx_destroy_shader - Validate an SVGA_3D_CMD_DX_DESTROY_SHADER
2989  * command
2990  *
2991  * @dev_priv: Pointer to a device private struct.
2992  * @sw_context: The software context being used for this batch.
2993  * @header: Pointer to the command header in the command stream.
2994  */
2995 static int vmw_cmd_dx_destroy_shader(struct vmw_private *dev_priv,
2996                                      struct vmw_sw_context *sw_context,
2997                                      SVGA3dCmdHeader *header)
2998 {
2999         struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
3000         struct {
3001                 SVGA3dCmdHeader header;
3002                 SVGA3dCmdDXDestroyShader body;
3003         } *cmd = container_of(header, typeof(*cmd), header);
3004         int ret;
3005
3006         if (!ctx_node) {
3007                 DRM_ERROR("DX Context not set.\n");
3008                 return -EINVAL;
3009         }
3010
3011         ret = vmw_shader_remove(sw_context->man, cmd->body.shaderId, 0,
3012                                 &sw_context->staged_cmd_res);
3013         if (ret)
3014                 DRM_ERROR("Could not find shader to remove.\n");
3015
3016         return ret;
3017 }
3018
3019 /**
3020  * vmw_cmd_dx_bind_shader - Validate an SVGA_3D_CMD_DX_BIND_SHADER
3021  * command
3022  *
3023  * @dev_priv: Pointer to a device private struct.
3024  * @sw_context: The software context being used for this batch.
3025  * @header: Pointer to the command header in the command stream.
3026  */
3027 static int vmw_cmd_dx_bind_shader(struct vmw_private *dev_priv,
3028                                   struct vmw_sw_context *sw_context,
3029                                   SVGA3dCmdHeader *header)
3030 {
3031         struct vmw_resource_val_node *ctx_node;
3032         struct vmw_resource_val_node *res_node;
3033         struct vmw_resource *res;
3034         struct {
3035                 SVGA3dCmdHeader header;
3036                 SVGA3dCmdDXBindShader body;
3037         } *cmd = container_of(header, typeof(*cmd), header);
3038         int ret;
3039
3040         if (cmd->body.cid != SVGA3D_INVALID_ID) {
3041                 ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
3042                                         user_context_converter,
3043                                         &cmd->body.cid, &ctx_node);
3044                 if (ret)
3045                         return ret;
3046         } else {
3047                 ctx_node = sw_context->dx_ctx_node;
3048                 if (!ctx_node) {
3049                         DRM_ERROR("DX Context not set.\n");
3050                         return -EINVAL;
3051                 }
3052         }
3053
3054         res = vmw_shader_lookup(vmw_context_res_man(ctx_node->res),
3055                                 cmd->body.shid, 0);
3056         if (IS_ERR(res)) {
3057                 DRM_ERROR("Could not find shader to bind.\n");
3058                 return PTR_ERR(res);
3059         }
3060
3061         ret = vmw_resource_val_add(sw_context, res, &res_node);
3062         if (ret) {
3063                 DRM_ERROR("Error creating resource validation node.\n");
3064                 goto out_unref;
3065         }
3066
3067
3068         ret = vmw_cmd_res_switch_backup(dev_priv, sw_context, res_node,
3069                                         &cmd->body.mobid,
3070                                         cmd->body.offsetInBytes);
3071 out_unref:
3072         vmw_resource_unreference(&res);
3073
3074         return ret;
3075 }
3076
3077 /**
3078  * vmw_cmd_dx_genmips - Validate an SVGA_3D_CMD_DX_GENMIPS command
3079  *
3080  * @dev_priv: Pointer to a device private struct.
3081  * @sw_context: The software context being used for this batch.
3082  * @header: Pointer to the command header in the command stream.
3083  */
3084 static int vmw_cmd_dx_genmips(struct vmw_private *dev_priv,
3085                               struct vmw_sw_context *sw_context,
3086                               SVGA3dCmdHeader *header)
3087 {
3088         struct {
3089                 SVGA3dCmdHeader header;
3090                 SVGA3dCmdDXGenMips body;
3091         } *cmd = container_of(header, typeof(*cmd), header);
3092
3093         return vmw_view_id_val_add(sw_context, vmw_view_sr,
3094                                    cmd->body.shaderResourceViewId);
3095 }
3096
3097 /**
3098  * vmw_cmd_dx_transfer_from_buffer -
3099  * Validate an SVGA_3D_CMD_DX_TRANSFER_FROM_BUFFER command
3100  *
3101  * @dev_priv: Pointer to a device private struct.
3102  * @sw_context: The software context being used for this batch.
3103  * @header: Pointer to the command header in the command stream.
3104  */
3105 static int vmw_cmd_dx_transfer_from_buffer(struct vmw_private *dev_priv,
3106                                            struct vmw_sw_context *sw_context,
3107                                            SVGA3dCmdHeader *header)
3108 {
3109         struct {
3110                 SVGA3dCmdHeader header;
3111                 SVGA3dCmdDXTransferFromBuffer body;
3112         } *cmd = container_of(header, typeof(*cmd), header);
3113         int ret;
3114
3115         ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
3116                                 user_surface_converter,
3117                                 &cmd->body.srcSid, NULL);
3118         if (ret != 0)
3119                 return ret;
3120
3121         return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
3122                                  user_surface_converter,
3123                                  &cmd->body.destSid, NULL);
3124 }
3125
3126 static int vmw_cmd_check_not_3d(struct vmw_private *dev_priv,
3127                                 struct vmw_sw_context *sw_context,
3128                                 void *buf, uint32_t *size)
3129 {
3130         uint32_t size_remaining = *size;
3131         uint32_t cmd_id;
3132
3133         cmd_id = ((uint32_t *)buf)[0];
3134         switch (cmd_id) {
3135         case SVGA_CMD_UPDATE:
3136                 *size = sizeof(uint32_t) + sizeof(SVGAFifoCmdUpdate);
3137                 break;
3138         case SVGA_CMD_DEFINE_GMRFB:
3139                 *size = sizeof(uint32_t) + sizeof(SVGAFifoCmdDefineGMRFB);
3140                 break;
3141         case SVGA_CMD_BLIT_GMRFB_TO_SCREEN:
3142                 *size = sizeof(uint32_t) + sizeof(SVGAFifoCmdBlitGMRFBToScreen);
3143                 break;
3144         case SVGA_CMD_BLIT_SCREEN_TO_GMRFB:
3145                 *size = sizeof(uint32_t) + sizeof(SVGAFifoCmdBlitGMRFBToScreen);
3146                 break;
3147         default:
3148                 DRM_ERROR("Unsupported SVGA command: %u.\n", cmd_id);
3149                 return -EINVAL;
3150         }
3151
3152         if (*size > size_remaining) {
3153                 DRM_ERROR("Invalid SVGA command (size mismatch):"
3154                           " %u.\n", cmd_id);
3155                 return -EINVAL;
3156         }
3157
3158         if (unlikely(!sw_context->kernel)) {
3159                 DRM_ERROR("Kernel only SVGA command: %u.\n", cmd_id);
3160                 return -EPERM;
3161         }
3162
3163         if (cmd_id == SVGA_CMD_DEFINE_GMRFB)
3164                 return vmw_cmd_check_define_gmrfb(dev_priv, sw_context, buf);
3165
3166         return 0;
3167 }
3168
3169 static const struct vmw_cmd_entry vmw_cmd_entries[SVGA_3D_CMD_MAX] = {
3170         VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DEFINE, &vmw_cmd_invalid,
3171                     false, false, false),
3172         VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DESTROY, &vmw_cmd_invalid,
3173                     false, false, false),
3174         VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_COPY, &vmw_cmd_surface_copy_check,
3175                     true, false, false),
3176         VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_STRETCHBLT, &vmw_cmd_stretch_blt_check,
3177                     true, false, false),
3178         VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DMA, &vmw_cmd_dma,
3179                     true, false, false),
3180         VMW_CMD_DEF(SVGA_3D_CMD_CONTEXT_DEFINE, &vmw_cmd_invalid,
3181                     false, false, false),
3182         VMW_CMD_DEF(SVGA_3D_CMD_CONTEXT_DESTROY, &vmw_cmd_invalid,
3183                     false, false, false),
3184         VMW_CMD_DEF(SVGA_3D_CMD_SETTRANSFORM, &vmw_cmd_cid_check,
3185                     true, false, false),
3186         VMW_CMD_DEF(SVGA_3D_CMD_SETZRANGE, &vmw_cmd_cid_check,
3187                     true, false, false),
3188         VMW_CMD_DEF(SVGA_3D_CMD_SETRENDERSTATE, &vmw_cmd_cid_check,
3189                     true, false, false),
3190         VMW_CMD_DEF(SVGA_3D_CMD_SETRENDERTARGET,
3191                     &vmw_cmd_set_render_target_check, true, false, false),
3192         VMW_CMD_DEF(SVGA_3D_CMD_SETTEXTURESTATE, &vmw_cmd_tex_state,
3193                     true, false, false),
3194         VMW_CMD_DEF(SVGA_3D_CMD_SETMATERIAL, &vmw_cmd_cid_check,
3195                     true, false, false),
3196         VMW_CMD_DEF(SVGA_3D_CMD_SETLIGHTDATA, &vmw_cmd_cid_check,
3197                     true, false, false),
3198         VMW_CMD_DEF(SVGA_3D_CMD_SETLIGHTENABLED, &vmw_cmd_cid_check,
3199                     true, false, false),
3200         VMW_CMD_DEF(SVGA_3D_CMD_SETVIEWPORT, &vmw_cmd_cid_check,
3201                     true, false, false),
3202         VMW_CMD_DEF(SVGA_3D_CMD_SETCLIPPLANE, &vmw_cmd_cid_check,
3203                     true, false, false),
3204         VMW_CMD_DEF(SVGA_3D_CMD_CLEAR, &vmw_cmd_cid_check,
3205                     true, false, false),
3206         VMW_CMD_DEF(SVGA_3D_CMD_PRESENT, &vmw_cmd_present_check,
3207                     false, false, false),
3208         VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DEFINE, &vmw_cmd_shader_define,
3209                     true, false, false),
3210         VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DESTROY, &vmw_cmd_shader_destroy,
3211                     true, false, false),
3212         VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER, &vmw_cmd_set_shader,
3213                     true, false, false),
3214         VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER_CONST, &vmw_cmd_set_shader_const,
3215                     true, false, false),
3216         VMW_CMD_DEF(SVGA_3D_CMD_DRAW_PRIMITIVES, &vmw_cmd_draw,
3217                     true, false, false),
3218         VMW_CMD_DEF(SVGA_3D_CMD_SETSCISSORRECT, &vmw_cmd_cid_check,
3219                     true, false, false),
3220         VMW_CMD_DEF(SVGA_3D_CMD_BEGIN_QUERY, &vmw_cmd_begin_query,
3221                     true, false, false),
3222         VMW_CMD_DEF(SVGA_3D_CMD_END_QUERY, &vmw_cmd_end_query,
3223                     true, false, false),
3224         VMW_CMD_DEF(SVGA_3D_CMD_WAIT_FOR_QUERY, &vmw_cmd_wait_query,
3225                     true, false, false),
3226         VMW_CMD_DEF(SVGA_3D_CMD_PRESENT_READBACK, &vmw_cmd_ok,
3227                     true, false, false),
3228         VMW_CMD_DEF(SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN,
3229                     &vmw_cmd_blt_surf_screen_check, false, false, false),
3230         VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DEFINE_V2, &vmw_cmd_invalid,
3231                     false, false, false),
3232         VMW_CMD_DEF(SVGA_3D_CMD_GENERATE_MIPMAPS, &vmw_cmd_invalid,
3233                     false, false, false),
3234         VMW_CMD_DEF(SVGA_3D_CMD_ACTIVATE_SURFACE, &vmw_cmd_invalid,
3235                     false, false, false),
3236         VMW_CMD_DEF(SVGA_3D_CMD_DEACTIVATE_SURFACE, &vmw_cmd_invalid,
3237                     false, false, false),
3238         VMW_CMD_DEF(SVGA_3D_CMD_SCREEN_DMA, &vmw_cmd_invalid,
3239                     false, false, false),
3240         VMW_CMD_DEF(SVGA_3D_CMD_SET_UNITY_SURFACE_COOKIE, &vmw_cmd_invalid,
3241                     false, false, false),
3242         VMW_CMD_DEF(SVGA_3D_CMD_OPEN_CONTEXT_SURFACE, &vmw_cmd_invalid,
3243                     false, false, false),
3244         VMW_CMD_DEF(SVGA_3D_CMD_LOGICOPS_BITBLT, &vmw_cmd_invalid,
3245                     false, false, false),
3246         VMW_CMD_DEF(SVGA_3D_CMD_LOGICOPS_TRANSBLT, &vmw_cmd_invalid,
3247                     false, false, false),
3248         VMW_CMD_DEF(SVGA_3D_CMD_LOGICOPS_STRETCHBLT, &vmw_cmd_invalid,
3249                     false, false, false),
3250         VMW_CMD_DEF(SVGA_3D_CMD_LOGICOPS_COLORFILL, &vmw_cmd_invalid,
3251                     false, false, false),
3252         VMW_CMD_DEF(SVGA_3D_CMD_LOGICOPS_ALPHABLEND, &vmw_cmd_invalid,
3253                     false, false, false),
3254         VMW_CMD_DEF(SVGA_3D_CMD_LOGICOPS_CLEARTYPEBLEND, &vmw_cmd_invalid,
3255                     false, false, false),
3256         VMW_CMD_DEF(SVGA_3D_CMD_SET_OTABLE_BASE, &vmw_cmd_invalid,
3257                     false, false, true),
3258         VMW_CMD_DEF(SVGA_3D_CMD_READBACK_OTABLE, &vmw_cmd_invalid,
3259                     false, false, true),
3260         VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_MOB, &vmw_cmd_invalid,
3261                     false, false, true),
3262         VMW_CMD_DEF(SVGA_3D_CMD_DESTROY_GB_MOB, &vmw_cmd_invalid,
3263                     false, false, true),
3264         VMW_CMD_DEF(SVGA_3D_CMD_REDEFINE_GB_MOB64, &vmw_cmd_invalid,
3265                     false, false, true),
3266         VMW_CMD_DEF(SVGA_3D_CMD_UPDATE_GB_MOB_MAPPING, &vmw_cmd_invalid,
3267                     false, false, true),
3268         VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_SURFACE, &vmw_cmd_invalid,
3269                     false, false, true),
3270         VMW_CMD_DEF(SVGA_3D_CMD_DESTROY_GB_SURFACE, &vmw_cmd_invalid,
3271                     false, false, true),
3272         VMW_CMD_DEF(SVGA_3D_CMD_BIND_GB_SURFACE, &vmw_cmd_bind_gb_surface,
3273                     true, false, true),
3274         VMW_CMD_DEF(SVGA_3D_CMD_COND_BIND_GB_SURFACE, &vmw_cmd_invalid,
3275                     false, false, true),
3276         VMW_CMD_DEF(SVGA_3D_CMD_UPDATE_GB_IMAGE, &vmw_cmd_update_gb_image,
3277                     true, false, true),
3278         VMW_CMD_DEF(SVGA_3D_CMD_UPDATE_GB_SURFACE,
3279                     &vmw_cmd_update_gb_surface, true, false, true),
3280         VMW_CMD_DEF(SVGA_3D_CMD_READBACK_GB_IMAGE,
3281                     &vmw_cmd_readback_gb_image, true, false, true),
3282         VMW_CMD_DEF(SVGA_3D_CMD_READBACK_GB_SURFACE,
3283                     &vmw_cmd_readback_gb_surface, true, false, true),
3284         VMW_CMD_DEF(SVGA_3D_CMD_INVALIDATE_GB_IMAGE,
3285                     &vmw_cmd_invalidate_gb_image, true, false, true),
3286         VMW_CMD_DEF(SVGA_3D_CMD_INVALIDATE_GB_SURFACE,
3287                     &vmw_cmd_invalidate_gb_surface, true, false, true),
3288         VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_CONTEXT, &vmw_cmd_invalid,
3289                     false, false, true),
3290         VMW_CMD_DEF(SVGA_3D_CMD_DESTROY_GB_CONTEXT, &vmw_cmd_invalid,
3291                     false, false, true),
3292         VMW_CMD_DEF(SVGA_3D_CMD_BIND_GB_CONTEXT, &vmw_cmd_invalid,
3293                     false, false, true),
3294         VMW_CMD_DEF(SVGA_3D_CMD_READBACK_GB_CONTEXT, &vmw_cmd_invalid,
3295                     false, false, true),
3296         VMW_CMD_DEF(SVGA_3D_CMD_INVALIDATE_GB_CONTEXT, &vmw_cmd_invalid,
3297                     false, false, true),
3298         VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_SHADER, &vmw_cmd_invalid,
3299                     false, false, true),
3300         VMW_CMD_DEF(SVGA_3D_CMD_BIND_GB_SHADER, &vmw_cmd_bind_gb_shader,
3301                     true, false, true),
3302         VMW_CMD_DEF(SVGA_3D_CMD_DESTROY_GB_SHADER, &vmw_cmd_invalid,
3303                     false, false, true),
3304         VMW_CMD_DEF(SVGA_3D_CMD_SET_OTABLE_BASE64, &vmw_cmd_invalid,
3305                     false, false, false),
3306         VMW_CMD_DEF(SVGA_3D_CMD_BEGIN_GB_QUERY, &vmw_cmd_begin_gb_query,
3307                     true, false, true),
3308         VMW_CMD_DEF(SVGA_3D_CMD_END_GB_QUERY, &vmw_cmd_end_gb_query,
3309                     true, false, true),
3310         VMW_CMD_DEF(SVGA_3D_CMD_WAIT_FOR_GB_QUERY, &vmw_cmd_wait_gb_query,
3311                     true, false, true),
3312         VMW_CMD_DEF(SVGA_3D_CMD_NOP, &vmw_cmd_ok,
3313                     true, false, true),
3314         VMW_CMD_DEF(SVGA_3D_CMD_NOP_ERROR, &vmw_cmd_ok,
3315                     true, false, true),
3316         VMW_CMD_DEF(SVGA_3D_CMD_ENABLE_GART, &vmw_cmd_invalid,
3317                     false, false, true),
3318         VMW_CMD_DEF(SVGA_3D_CMD_DISABLE_GART, &vmw_cmd_invalid,
3319                     false, false, true),
3320         VMW_CMD_DEF(SVGA_3D_CMD_MAP_MOB_INTO_GART, &vmw_cmd_invalid,
3321                     false, false, true),
3322         VMW_CMD_DEF(SVGA_3D_CMD_UNMAP_GART_RANGE, &vmw_cmd_invalid,
3323                     false, false, true),
3324         VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_SCREENTARGET, &vmw_cmd_invalid,
3325                     false, false, true),
3326         VMW_CMD_DEF(SVGA_3D_CMD_DESTROY_GB_SCREENTARGET, &vmw_cmd_invalid,
3327                     false, false, true),
3328         VMW_CMD_DEF(SVGA_3D_CMD_BIND_GB_SCREENTARGET, &vmw_cmd_invalid,
3329                     false, false, true),
3330         VMW_CMD_DEF(SVGA_3D_CMD_UPDATE_GB_SCREENTARGET, &vmw_cmd_invalid,
3331                     false, false, true),
3332         VMW_CMD_DEF(SVGA_3D_CMD_READBACK_GB_IMAGE_PARTIAL, &vmw_cmd_invalid,
3333                     false, false, true),
3334         VMW_CMD_DEF(SVGA_3D_CMD_INVALIDATE_GB_IMAGE_PARTIAL, &vmw_cmd_invalid,
3335                     false, false, true),
3336         VMW_CMD_DEF(SVGA_3D_CMD_SET_GB_SHADERCONSTS_INLINE, &vmw_cmd_cid_check,
3337                     true, false, true),
3338         VMW_CMD_DEF(SVGA_3D_CMD_GB_SCREEN_DMA, &vmw_cmd_invalid,
3339                     false, false, true),
3340         VMW_CMD_DEF(SVGA_3D_CMD_BIND_GB_SURFACE_WITH_PITCH, &vmw_cmd_invalid,
3341                     false, false, true),
3342         VMW_CMD_DEF(SVGA_3D_CMD_GB_MOB_FENCE, &vmw_cmd_invalid,
3343                     false, false, true),
3344         VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_SURFACE_V2, &vmw_cmd_invalid,
3345                     false, false, true),
3346
3347         /*
3348          * DX commands
3349          */
3350         VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_CONTEXT, &vmw_cmd_invalid,
3351                     false, false, true),
3352         VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_CONTEXT, &vmw_cmd_invalid,
3353                     false, false, true),
3354         VMW_CMD_DEF(SVGA_3D_CMD_DX_BIND_CONTEXT, &vmw_cmd_invalid,
3355                     false, false, true),
3356         VMW_CMD_DEF(SVGA_3D_CMD_DX_READBACK_CONTEXT, &vmw_cmd_invalid,
3357                     false, false, true),
3358         VMW_CMD_DEF(SVGA_3D_CMD_DX_INVALIDATE_CONTEXT, &vmw_cmd_invalid,
3359                     false, false, true),
3360         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_SINGLE_CONSTANT_BUFFER,
3361                     &vmw_cmd_dx_set_single_constant_buffer, true, false, true),
3362         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_SHADER_RESOURCES,
3363                     &vmw_cmd_dx_set_shader_res, true, false, true),
3364         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_SHADER, &vmw_cmd_dx_set_shader,
3365                     true, false, true),
3366         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_SAMPLERS, &vmw_cmd_dx_cid_check,
3367                     true, false, true),
3368         VMW_CMD_DEF(SVGA_3D_CMD_DX_DRAW, &vmw_cmd_dx_cid_check,
3369                     true, false, true),
3370         VMW_CMD_DEF(SVGA_3D_CMD_DX_DRAW_INDEXED, &vmw_cmd_dx_cid_check,
3371                     true, false, true),
3372         VMW_CMD_DEF(SVGA_3D_CMD_DX_DRAW_INSTANCED, &vmw_cmd_dx_cid_check,
3373                     true, false, true),
3374         VMW_CMD_DEF(SVGA_3D_CMD_DX_DRAW_INDEXED_INSTANCED,
3375                     &vmw_cmd_dx_cid_check, true, false, true),
3376         VMW_CMD_DEF(SVGA_3D_CMD_DX_DRAW_AUTO, &vmw_cmd_dx_cid_check,
3377                     true, false, true),
3378         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_VERTEX_BUFFERS,
3379                     &vmw_cmd_dx_set_vertex_buffers, true, false, true),
3380         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_INDEX_BUFFER,
3381                     &vmw_cmd_dx_set_index_buffer, true, false, true),
3382         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_RENDERTARGETS,
3383                     &vmw_cmd_dx_set_rendertargets, true, false, true),
3384         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_BLEND_STATE, &vmw_cmd_dx_cid_check,
3385                     true, false, true),
3386         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_DEPTHSTENCIL_STATE,
3387                     &vmw_cmd_dx_cid_check, true, false, true),
3388         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_RASTERIZER_STATE,
3389                     &vmw_cmd_dx_cid_check, true, false, true),
3390         VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_QUERY, &vmw_cmd_dx_define_query,
3391                     true, false, true),
3392         VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_QUERY, &vmw_cmd_dx_cid_check,
3393                     true, false, true),
3394         VMW_CMD_DEF(SVGA_3D_CMD_DX_BIND_QUERY, &vmw_cmd_dx_bind_query,
3395                     true, false, true),
3396         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_QUERY_OFFSET,
3397                     &vmw_cmd_dx_cid_check, true, false, true),
3398         VMW_CMD_DEF(SVGA_3D_CMD_DX_BEGIN_QUERY, &vmw_cmd_dx_cid_check,
3399                     true, false, true),
3400         VMW_CMD_DEF(SVGA_3D_CMD_DX_END_QUERY, &vmw_cmd_dx_cid_check,
3401                     true, false, true),
3402         VMW_CMD_DEF(SVGA_3D_CMD_DX_READBACK_QUERY, &vmw_cmd_invalid,
3403                     true, false, true),
3404         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_PREDICATION, &vmw_cmd_dx_cid_check,
3405                     true, false, true),
3406         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_VIEWPORTS, &vmw_cmd_dx_cid_check,
3407                     true, false, true),
3408         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_SCISSORRECTS, &vmw_cmd_dx_cid_check,
3409                     true, false, true),
3410         VMW_CMD_DEF(SVGA_3D_CMD_DX_CLEAR_RENDERTARGET_VIEW,
3411                     &vmw_cmd_dx_clear_rendertarget_view, true, false, true),
3412         VMW_CMD_DEF(SVGA_3D_CMD_DX_CLEAR_DEPTHSTENCIL_VIEW,
3413                     &vmw_cmd_dx_clear_depthstencil_view, true, false, true),
3414         VMW_CMD_DEF(SVGA_3D_CMD_DX_PRED_COPY, &vmw_cmd_invalid,
3415                     true, false, true),
3416         VMW_CMD_DEF(SVGA_3D_CMD_DX_GENMIPS, &vmw_cmd_dx_genmips,
3417                     true, false, true),
3418         VMW_CMD_DEF(SVGA_3D_CMD_DX_UPDATE_SUBRESOURCE,
3419                     &vmw_cmd_dx_check_subresource, true, false, true),
3420         VMW_CMD_DEF(SVGA_3D_CMD_DX_READBACK_SUBRESOURCE,
3421                     &vmw_cmd_dx_check_subresource, true, false, true),
3422         VMW_CMD_DEF(SVGA_3D_CMD_DX_INVALIDATE_SUBRESOURCE,
3423                     &vmw_cmd_dx_check_subresource, true, false, true),
3424         VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_SHADERRESOURCE_VIEW,
3425                     &vmw_cmd_dx_view_define, true, false, true),
3426         VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_SHADERRESOURCE_VIEW,
3427                     &vmw_cmd_dx_view_remove, true, false, true),
3428         VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_RENDERTARGET_VIEW,
3429                     &vmw_cmd_dx_view_define, true, false, true),
3430         VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_RENDERTARGET_VIEW,
3431                     &vmw_cmd_dx_view_remove, true, false, true),
3432         VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_DEPTHSTENCIL_VIEW,
3433                     &vmw_cmd_dx_view_define, true, false, true),
3434         VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_DEPTHSTENCIL_VIEW,
3435                     &vmw_cmd_dx_view_remove, true, false, true),
3436         VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_ELEMENTLAYOUT,
3437                     &vmw_cmd_dx_so_define, true, false, true),
3438         VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_ELEMENTLAYOUT,
3439                     &vmw_cmd_dx_cid_check, true, false, true),
3440         VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_BLEND_STATE,
3441                     &vmw_cmd_dx_so_define, true, false, true),
3442         VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_BLEND_STATE,
3443                     &vmw_cmd_dx_cid_check, true, false, true),
3444         VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_DEPTHSTENCIL_STATE,
3445                     &vmw_cmd_dx_so_define, true, false, true),
3446         VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_DEPTHSTENCIL_STATE,
3447                     &vmw_cmd_dx_cid_check, true, false, true),
3448         VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_RASTERIZER_STATE,
3449                     &vmw_cmd_dx_so_define, true, false, true),
3450         VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_RASTERIZER_STATE,
3451                     &vmw_cmd_dx_cid_check, true, false, true),
3452         VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_SAMPLER_STATE,
3453                     &vmw_cmd_dx_so_define, true, false, true),
3454         VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_SAMPLER_STATE,
3455                     &vmw_cmd_dx_cid_check, true, false, true),
3456         VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_SHADER,
3457                     &vmw_cmd_dx_define_shader, true, false, true),
3458         VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_SHADER,
3459                     &vmw_cmd_dx_destroy_shader, true, false, true),
3460         VMW_CMD_DEF(SVGA_3D_CMD_DX_BIND_SHADER,
3461                     &vmw_cmd_dx_bind_shader, true, false, true),
3462         VMW_CMD_DEF(SVGA_3D_CMD_DX_DEFINE_STREAMOUTPUT,
3463                     &vmw_cmd_dx_so_define, true, false, true),
3464         VMW_CMD_DEF(SVGA_3D_CMD_DX_DESTROY_STREAMOUTPUT,
3465                     &vmw_cmd_dx_cid_check, true, false, true),
3466         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_STREAMOUTPUT, &vmw_cmd_dx_cid_check,
3467                     true, false, true),
3468         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_SOTARGETS,
3469                     &vmw_cmd_dx_set_so_targets, true, false, true),
3470         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_INPUT_LAYOUT,
3471                     &vmw_cmd_dx_cid_check, true, false, true),
3472         VMW_CMD_DEF(SVGA_3D_CMD_DX_SET_TOPOLOGY,
3473                     &vmw_cmd_dx_cid_check, true, false, true),
3474         VMW_CMD_DEF(SVGA_3D_CMD_DX_BUFFER_COPY,
3475                     &vmw_cmd_buffer_copy_check, true, false, true),
3476         VMW_CMD_DEF(SVGA_3D_CMD_DX_PRED_COPY_REGION,
3477                     &vmw_cmd_pred_copy_check, true, false, true),
3478         VMW_CMD_DEF(SVGA_3D_CMD_DX_TRANSFER_FROM_BUFFER,
3479                     &vmw_cmd_dx_transfer_from_buffer,
3480                     true, false, true),
3481 };
3482
3483 bool vmw_cmd_describe(const void *buf, u32 *size, char const **cmd)
3484 {
3485         u32 cmd_id = ((u32 *) buf)[0];
3486
3487         if (cmd_id >= SVGA_CMD_MAX) {
3488                 SVGA3dCmdHeader *header = (SVGA3dCmdHeader *) buf;
3489                 const struct vmw_cmd_entry *entry;
3490
3491                 *size = header->size + sizeof(SVGA3dCmdHeader);
3492                 cmd_id = header->id;
3493                 if (cmd_id >= SVGA_3D_CMD_MAX)
3494                         return false;
3495
3496                 cmd_id -= SVGA_3D_CMD_BASE;
3497                 entry = &vmw_cmd_entries[cmd_id];
3498                 *cmd = entry->cmd_name;
3499                 return true;
3500         }
3501
3502         switch (cmd_id) {
3503         case SVGA_CMD_UPDATE:
3504                 *cmd = "SVGA_CMD_UPDATE";
3505                 *size = sizeof(u32) + sizeof(SVGAFifoCmdUpdate);
3506                 break;
3507         case SVGA_CMD_DEFINE_GMRFB:
3508                 *cmd = "SVGA_CMD_DEFINE_GMRFB";
3509                 *size = sizeof(u32) + sizeof(SVGAFifoCmdDefineGMRFB);
3510                 break;
3511         case SVGA_CMD_BLIT_GMRFB_TO_SCREEN:
3512                 *cmd = "SVGA_CMD_BLIT_GMRFB_TO_SCREEN";
3513                 *size = sizeof(u32) + sizeof(SVGAFifoCmdBlitGMRFBToScreen);
3514                 break;
3515         case SVGA_CMD_BLIT_SCREEN_TO_GMRFB:
3516                 *cmd = "SVGA_CMD_BLIT_SCREEN_TO_GMRFB";
3517                 *size = sizeof(u32) + sizeof(SVGAFifoCmdBlitGMRFBToScreen);
3518                 break;
3519         default:
3520                 *cmd = "UNKNOWN";
3521                 *size = 0;
3522                 return false;
3523         }
3524
3525         return true;
3526 }
3527
3528 static int vmw_cmd_check(struct vmw_private *dev_priv,
3529                          struct vmw_sw_context *sw_context,
3530                          void *buf, uint32_t *size)
3531 {
3532         uint32_t cmd_id;
3533         uint32_t size_remaining = *size;
3534         SVGA3dCmdHeader *header = (SVGA3dCmdHeader *) buf;
3535         int ret;
3536         const struct vmw_cmd_entry *entry;
3537         bool gb = dev_priv->capabilities & SVGA_CAP_GBOBJECTS;
3538
3539         cmd_id = ((uint32_t *)buf)[0];
3540         /* Handle any none 3D commands */
3541         if (unlikely(cmd_id < SVGA_CMD_MAX))
3542                 return vmw_cmd_check_not_3d(dev_priv, sw_context, buf, size);
3543
3544
3545         cmd_id = header->id;
3546         *size = header->size + sizeof(SVGA3dCmdHeader);
3547
3548         cmd_id -= SVGA_3D_CMD_BASE;
3549         if (unlikely(*size > size_remaining))
3550                 goto out_invalid;
3551
3552         if (unlikely(cmd_id >= SVGA_3D_CMD_MAX - SVGA_3D_CMD_BASE))
3553                 goto out_invalid;
3554
3555         entry = &vmw_cmd_entries[cmd_id];
3556         if (unlikely(!entry->func))
3557                 goto out_invalid;
3558
3559         if (unlikely(!entry->user_allow && !sw_context->kernel))
3560                 goto out_privileged;
3561
3562         if (unlikely(entry->gb_disable && gb))
3563                 goto out_old;
3564
3565         if (unlikely(entry->gb_enable && !gb))
3566                 goto out_new;
3567
3568         ret = entry->func(dev_priv, sw_context, header);
3569         if (unlikely(ret != 0))
3570                 goto out_invalid;
3571
3572         return 0;
3573 out_invalid:
3574         DRM_ERROR("Invalid SVGA3D command: %d\n",
3575                   cmd_id + SVGA_3D_CMD_BASE);
3576         return -EINVAL;
3577 out_privileged:
3578         DRM_ERROR("Privileged SVGA3D command: %d\n",
3579                   cmd_id + SVGA_3D_CMD_BASE);
3580         return -EPERM;
3581 out_old:
3582         DRM_ERROR("Deprecated (disallowed) SVGA3D command: %d\n",
3583                   cmd_id + SVGA_3D_CMD_BASE);
3584         return -EINVAL;
3585 out_new:
3586         DRM_ERROR("SVGA3D command: %d not supported by virtual hardware.\n",
3587                   cmd_id + SVGA_3D_CMD_BASE);
3588         return -EINVAL;
3589 }
3590
3591 static int vmw_cmd_check_all(struct vmw_private *dev_priv,
3592                              struct vmw_sw_context *sw_context,
3593                              void *buf,
3594                              uint32_t size)
3595 {
3596         int32_t cur_size = size;
3597         int ret;
3598
3599         sw_context->buf_start = buf;
3600
3601         while (cur_size > 0) {
3602                 size = cur_size;
3603                 ret = vmw_cmd_check(dev_priv, sw_context, buf, &size);
3604                 if (unlikely(ret != 0))
3605                         return ret;
3606                 buf = (void *)((unsigned long) buf + size);
3607                 cur_size -= size;
3608         }
3609
3610         if (unlikely(cur_size != 0)) {
3611                 DRM_ERROR("Command verifier out of sync.\n");
3612                 return -EINVAL;
3613         }
3614
3615         return 0;
3616 }
3617
3618 static void vmw_free_relocations(struct vmw_sw_context *sw_context)
3619 {
3620         sw_context->cur_reloc = 0;
3621 }
3622
3623 static void vmw_apply_relocations(struct vmw_sw_context *sw_context)
3624 {
3625         uint32_t i;
3626         struct vmw_relocation *reloc;
3627         struct ttm_validate_buffer *validate;
3628         struct ttm_buffer_object *bo;
3629
3630         for (i = 0; i < sw_context->cur_reloc; ++i) {
3631                 reloc = &sw_context->relocs[i];
3632                 validate = &sw_context->val_bufs[reloc->index].base;
3633                 bo = validate->bo;
3634                 switch (bo->mem.mem_type) {
3635                 case TTM_PL_VRAM:
3636                         reloc->location->offset += bo->offset;
3637                         reloc->location->gmrId = SVGA_GMR_FRAMEBUFFER;
3638                         break;
3639                 case VMW_PL_GMR:
3640                         reloc->location->gmrId = bo->mem.start;
3641                         break;
3642                 case VMW_PL_MOB:
3643                         *reloc->mob_loc = bo->mem.start;
3644                         break;
3645                 default:
3646                         BUG();
3647                 }
3648         }
3649         vmw_free_relocations(sw_context);
3650 }
3651
3652 /**
3653  * vmw_resource_list_unrefererence - Free up a resource list and unreference
3654  * all resources referenced by it.
3655  *
3656  * @list: The resource list.
3657  */
3658 static void vmw_resource_list_unreference(struct vmw_sw_context *sw_context,
3659                                           struct list_head *list)
3660 {
3661         struct vmw_resource_val_node *val, *val_next;
3662
3663         /*
3664          * Drop references to resources held during command submission.
3665          */
3666
3667         list_for_each_entry_safe(val, val_next, list, head) {
3668                 list_del_init(&val->head);
3669                 vmw_resource_unreference(&val->res);
3670
3671                 if (val->staged_bindings) {
3672                         if (val->staged_bindings != sw_context->staged_bindings)
3673                                 vmw_binding_state_free(val->staged_bindings);
3674                         else
3675                                 sw_context->staged_bindings_inuse = false;
3676                         val->staged_bindings = NULL;
3677                 }
3678
3679                 kfree(val);
3680         }
3681 }
3682
3683 static void vmw_clear_validations(struct vmw_sw_context *sw_context)
3684 {
3685         struct vmw_validate_buffer *entry, *next;
3686         struct vmw_resource_val_node *val;
3687
3688         /*
3689          * Drop references to DMA buffers held during command submission.
3690          */
3691         list_for_each_entry_safe(entry, next, &sw_context->validate_nodes,
3692                                  base.head) {
3693                 list_del(&entry->base.head);
3694                 ttm_bo_unref(&entry->base.bo);
3695                 (void) drm_ht_remove_item(&sw_context->res_ht, &entry->hash);
3696                 sw_context->cur_val_buf--;
3697         }
3698         BUG_ON(sw_context->cur_val_buf != 0);
3699
3700         list_for_each_entry(val, &sw_context->resource_list, head)
3701                 (void) drm_ht_remove_item(&sw_context->res_ht, &val->hash);
3702 }
3703
3704 int vmw_validate_single_buffer(struct vmw_private *dev_priv,
3705                                struct ttm_buffer_object *bo,
3706                                bool interruptible,
3707                                bool validate_as_mob)
3708 {
3709         struct vmw_dma_buffer *vbo = container_of(bo, struct vmw_dma_buffer,
3710                                                   base);
3711         int ret;
3712
3713         if (vbo->pin_count > 0)
3714                 return 0;
3715
3716         if (validate_as_mob)
3717                 return ttm_bo_validate(bo, &vmw_mob_placement, interruptible,
3718                                        false);
3719
3720         /**
3721          * Put BO in VRAM if there is space, otherwise as a GMR.
3722          * If there is no space in VRAM and GMR ids are all used up,
3723          * start evicting GMRs to make room. If the DMA buffer can't be
3724          * used as a GMR, this will return -ENOMEM.
3725          */
3726
3727         ret = ttm_bo_validate(bo, &vmw_vram_gmr_placement, interruptible,
3728                               false);
3729         if (likely(ret == 0 || ret == -ERESTARTSYS))
3730                 return ret;
3731
3732         /**
3733          * If that failed, try VRAM again, this time evicting
3734          * previous contents.
3735          */
3736
3737         ret = ttm_bo_validate(bo, &vmw_vram_placement, interruptible, false);
3738         return ret;
3739 }
3740
3741 static int vmw_validate_buffers(struct vmw_private *dev_priv,
3742                                 struct vmw_sw_context *sw_context)
3743 {
3744         struct vmw_validate_buffer *entry;
3745         int ret;
3746
3747         list_for_each_entry(entry, &sw_context->validate_nodes, base.head) {
3748                 ret = vmw_validate_single_buffer(dev_priv, entry->base.bo,
3749                                                  true,
3750                                                  entry->validate_as_mob);
3751                 if (unlikely(ret != 0))
3752                         return ret;
3753         }
3754         return 0;
3755 }
3756
3757 static int vmw_resize_cmd_bounce(struct vmw_sw_context *sw_context,
3758                                  uint32_t size)
3759 {
3760         if (likely(sw_context->cmd_bounce_size >= size))
3761                 return 0;
3762
3763         if (sw_context->cmd_bounce_size == 0)
3764                 sw_context->cmd_bounce_size = VMWGFX_CMD_BOUNCE_INIT_SIZE;
3765
3766         while (sw_context->cmd_bounce_size < size) {
3767                 sw_context->cmd_bounce_size =
3768                         PAGE_ALIGN(sw_context->cmd_bounce_size +
3769                                    (sw_context->cmd_bounce_size >> 1));
3770         }
3771
3772         vfree(sw_context->cmd_bounce);
3773         sw_context->cmd_bounce = vmalloc(sw_context->cmd_bounce_size);
3774
3775         if (sw_context->cmd_bounce == NULL) {
3776                 DRM_ERROR("Failed to allocate command bounce buffer.\n");
3777                 sw_context->cmd_bounce_size = 0;
3778                 return -ENOMEM;
3779         }
3780
3781         return 0;
3782 }
3783
3784 /**
3785  * vmw_execbuf_fence_commands - create and submit a command stream fence
3786  *
3787  * Creates a fence object and submits a command stream marker.
3788  * If this fails for some reason, We sync the fifo and return NULL.
3789  * It is then safe to fence buffers with a NULL pointer.
3790  *
3791  * If @p_handle is not NULL @file_priv must also not be NULL. Creates
3792  * a userspace handle if @p_handle is not NULL, otherwise not.
3793  */
3794
3795 int vmw_execbuf_fence_commands(struct drm_file *file_priv,
3796                                struct vmw_private *dev_priv,
3797                                struct vmw_fence_obj **p_fence,
3798                                uint32_t *p_handle)
3799 {
3800         uint32_t sequence;
3801         int ret;
3802         bool synced = false;
3803
3804         /* p_handle implies file_priv. */
3805         BUG_ON(p_handle != NULL && file_priv == NULL);
3806
3807         ret = vmw_fifo_send_fence(dev_priv, &sequence);
3808         if (unlikely(ret != 0)) {
3809                 DRM_ERROR("Fence submission error. Syncing.\n");
3810                 synced = true;
3811         }
3812
3813         if (p_handle != NULL)
3814                 ret = vmw_user_fence_create(file_priv, dev_priv->fman,
3815                                             sequence, p_fence, p_handle);
3816         else
3817                 ret = vmw_fence_create(dev_priv->fman, sequence, p_fence);
3818
3819         if (unlikely(ret != 0 && !synced)) {
3820                 (void) vmw_fallback_wait(dev_priv, false, false,
3821                                          sequence, false,
3822                                          VMW_FENCE_WAIT_TIMEOUT);
3823                 *p_fence = NULL;
3824         }
3825
3826         return ret;
3827 }
3828
3829 /**
3830  * vmw_execbuf_copy_fence_user - copy fence object information to
3831  * user-space.
3832  *
3833  * @dev_priv: Pointer to a vmw_private struct.
3834  * @vmw_fp: Pointer to the struct vmw_fpriv representing the calling file.
3835  * @ret: Return value from fence object creation.
3836  * @user_fence_rep: User space address of a struct drm_vmw_fence_rep to
3837  * which the information should be copied.
3838  * @fence: Pointer to the fenc object.
3839  * @fence_handle: User-space fence handle.
3840  * @out_fence_fd: exported file descriptor for the fence.  -1 if not used
3841  * @sync_file:  Only used to clean up in case of an error in this function.
3842  *
3843  * This function copies fence information to user-space. If copying fails,
3844  * The user-space struct drm_vmw_fence_rep::error member is hopefully
3845  * left untouched, and if it's preloaded with an -EFAULT by user-space,
3846  * the error will hopefully be detected.
3847  * Also if copying fails, user-space will be unable to signal the fence
3848  * object so we wait for it immediately, and then unreference the
3849  * user-space reference.
3850  */
3851 int
3852 vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv,
3853                             struct vmw_fpriv *vmw_fp,
3854                             int ret,
3855                             struct drm_vmw_fence_rep __user *user_fence_rep,
3856                             struct vmw_fence_obj *fence,
3857                             uint32_t fence_handle,
3858                             int32_t out_fence_fd)
3859 {
3860         struct drm_vmw_fence_rep fence_rep;
3861
3862         if (user_fence_rep == NULL)
3863                 return 0;
3864
3865         memset(&fence_rep, 0, sizeof(fence_rep));
3866
3867         fence_rep.error = ret;
3868         fence_rep.fd = out_fence_fd;
3869         if (ret == 0) {
3870                 BUG_ON(fence == NULL);
3871
3872                 fence_rep.handle = fence_handle;
3873                 fence_rep.seqno = fence->base.seqno;
3874                 vmw_update_seqno(dev_priv, &dev_priv->fifo);
3875                 fence_rep.passed_seqno = dev_priv->last_read_seqno;
3876         }
3877
3878         /*
3879          * copy_to_user errors will be detected by user space not
3880          * seeing fence_rep::error filled in. Typically
3881          * user-space would have pre-set that member to -EFAULT.
3882          */
3883         ret = copy_to_user(user_fence_rep, &fence_rep,
3884                            sizeof(fence_rep));
3885
3886         /*
3887          * User-space lost the fence object. We need to sync
3888          * and unreference the handle.
3889          */
3890         if (unlikely(ret != 0) && (fence_rep.error == 0)) {
3891                 ttm_ref_object_base_unref(vmw_fp->tfile,
3892                                           fence_handle, TTM_REF_USAGE);
3893                 DRM_ERROR("Fence copy error. Syncing.\n");
3894                 (void) vmw_fence_obj_wait(fence, false, false,
3895                                           VMW_FENCE_WAIT_TIMEOUT);
3896         }
3897
3898         return ret ? -EFAULT : 0;
3899 }
3900
3901 /**
3902  * vmw_execbuf_submit_fifo - Patch a command batch and submit it using
3903  * the fifo.
3904  *
3905  * @dev_priv: Pointer to a device private structure.
3906  * @kernel_commands: Pointer to the unpatched command batch.
3907  * @command_size: Size of the unpatched command batch.
3908  * @sw_context: Structure holding the relocation lists.
3909  *
3910  * Side effects: If this function returns 0, then the command batch
3911  * pointed to by @kernel_commands will have been modified.
3912  */
3913 static int vmw_execbuf_submit_fifo(struct vmw_private *dev_priv,
3914                                    void *kernel_commands,
3915                                    u32 command_size,
3916                                    struct vmw_sw_context *sw_context)
3917 {
3918         void *cmd;
3919
3920         if (sw_context->dx_ctx_node)
3921                 cmd = vmw_fifo_reserve_dx(dev_priv, command_size,
3922                                           sw_context->dx_ctx_node->res->id);
3923         else
3924                 cmd = vmw_fifo_reserve(dev_priv, command_size);
3925         if (!cmd) {
3926                 DRM_ERROR("Failed reserving fifo space for commands.\n");
3927                 return -ENOMEM;
3928         }
3929
3930         vmw_apply_relocations(sw_context);
3931         memcpy(cmd, kernel_commands, command_size);
3932         vmw_resource_relocations_apply(cmd, &sw_context->res_relocations);
3933         vmw_resource_relocations_free(&sw_context->res_relocations);
3934         vmw_fifo_commit(dev_priv, command_size);
3935
3936         return 0;
3937 }
3938
3939 /**
3940  * vmw_execbuf_submit_cmdbuf - Patch a command batch and submit it using
3941  * the command buffer manager.
3942  *
3943  * @dev_priv: Pointer to a device private structure.
3944  * @header: Opaque handle to the command buffer allocation.
3945  * @command_size: Size of the unpatched command batch.
3946  * @sw_context: Structure holding the relocation lists.
3947  *
3948  * Side effects: If this function returns 0, then the command buffer
3949  * represented by @header will have been modified.
3950  */
3951 static int vmw_execbuf_submit_cmdbuf(struct vmw_private *dev_priv,
3952                                      struct vmw_cmdbuf_header *header,
3953                                      u32 command_size,
3954                                      struct vmw_sw_context *sw_context)
3955 {
3956         u32 id = ((sw_context->dx_ctx_node) ? sw_context->dx_ctx_node->res->id :
3957                   SVGA3D_INVALID_ID);
3958         void *cmd = vmw_cmdbuf_reserve(dev_priv->cman, command_size,
3959                                        id, false, header);
3960
3961         vmw_apply_relocations(sw_context);
3962         vmw_resource_relocations_apply(cmd, &sw_context->res_relocations);
3963         vmw_resource_relocations_free(&sw_context->res_relocations);
3964         vmw_cmdbuf_commit(dev_priv->cman, command_size, header, false);
3965
3966         return 0;
3967 }
3968
3969 /**
3970  * vmw_execbuf_cmdbuf - Prepare, if possible, a user-space command batch for
3971  * submission using a command buffer.
3972  *
3973  * @dev_priv: Pointer to a device private structure.
3974  * @user_commands: User-space pointer to the commands to be submitted.
3975  * @command_size: Size of the unpatched command batch.
3976  * @header: Out parameter returning the opaque pointer to the command buffer.
3977  *
3978  * This function checks whether we can use the command buffer manager for
3979  * submission and if so, creates a command buffer of suitable size and
3980  * copies the user data into that buffer.
3981  *
3982  * On successful return, the function returns a pointer to the data in the
3983  * command buffer and *@header is set to non-NULL.
3984  * If command buffers could not be used, the function will return the value
3985  * of @kernel_commands on function call. That value may be NULL. In that case,
3986  * the value of *@header will be set to NULL.
3987  * If an error is encountered, the function will return a pointer error value.
3988  * If the function is interrupted by a signal while sleeping, it will return
3989  * -ERESTARTSYS casted to a pointer error value.
3990  */
3991 static void *vmw_execbuf_cmdbuf(struct vmw_private *dev_priv,
3992                                 void __user *user_commands,
3993                                 void *kernel_commands,
3994                                 u32 command_size,
3995                                 struct vmw_cmdbuf_header **header)
3996 {
3997         size_t cmdbuf_size;
3998         int ret;
3999
4000         *header = NULL;
4001         if (command_size > SVGA_CB_MAX_SIZE) {
4002                 DRM_ERROR("Command buffer is too large.\n");
4003                 return ERR_PTR(-EINVAL);
4004         }
4005
4006         if (!dev_priv->cman || kernel_commands)
4007                 return kernel_commands;
4008
4009         /* If possible, add a little space for fencing. */
4010         cmdbuf_size = command_size + 512;
4011         cmdbuf_size = min_t(size_t, cmdbuf_size, SVGA_CB_MAX_SIZE);
4012         kernel_commands = vmw_cmdbuf_alloc(dev_priv->cman, cmdbuf_size,
4013                                            true, header);
4014         if (IS_ERR(kernel_commands))
4015                 return kernel_commands;
4016
4017         ret = copy_from_user(kernel_commands, user_commands,
4018                              command_size);
4019         if (ret) {
4020                 DRM_ERROR("Failed copying commands.\n");
4021                 vmw_cmdbuf_header_free(*header);
4022                 *header = NULL;
4023                 return ERR_PTR(-EFAULT);
4024         }
4025
4026         return kernel_commands;
4027 }
4028
4029 static int vmw_execbuf_tie_context(struct vmw_private *dev_priv,
4030                                    struct vmw_sw_context *sw_context,
4031                                    uint32_t handle)
4032 {
4033         struct vmw_resource_val_node *ctx_node;
4034         struct vmw_resource *res;
4035         int ret;
4036
4037         if (handle == SVGA3D_INVALID_ID)
4038                 return 0;
4039
4040         ret = vmw_user_resource_lookup_handle(dev_priv, sw_context->fp->tfile,
4041                                               handle, user_context_converter,
4042                                               &res);
4043         if (unlikely(ret != 0)) {
4044                 DRM_ERROR("Could not find or user DX context 0x%08x.\n",
4045                           (unsigned) handle);
4046                 return ret;
4047         }
4048
4049         ret = vmw_resource_val_add(sw_context, res, &ctx_node);
4050         if (unlikely(ret != 0))
4051                 goto out_err;
4052
4053         sw_context->dx_ctx_node = ctx_node;
4054         sw_context->man = vmw_context_res_man(res);
4055 out_err:
4056         vmw_resource_unreference(&res);
4057         return ret;
4058 }
4059
4060 int vmw_execbuf_process(struct drm_file *file_priv,
4061                         struct vmw_private *dev_priv,
4062                         void __user *user_commands,
4063                         void *kernel_commands,
4064                         uint32_t command_size,
4065                         uint64_t throttle_us,
4066                         uint32_t dx_context_handle,
4067                         struct drm_vmw_fence_rep __user *user_fence_rep,
4068                         struct vmw_fence_obj **out_fence,
4069                         uint32_t flags)
4070 {
4071         struct vmw_sw_context *sw_context = &dev_priv->ctx;
4072         struct vmw_fence_obj *fence = NULL;
4073         struct vmw_resource *error_resource;
4074         struct list_head resource_list;
4075         struct vmw_cmdbuf_header *header;
4076         struct ww_acquire_ctx ticket;
4077         uint32_t handle;
4078         int ret;
4079         int32_t out_fence_fd = -1;
4080         struct sync_file *sync_file = NULL;
4081
4082
4083         if (flags & DRM_VMW_EXECBUF_FLAG_EXPORT_FENCE_FD) {
4084                 out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
4085                 if (out_fence_fd < 0) {
4086                         DRM_ERROR("Failed to get a fence file descriptor.\n");
4087                         return out_fence_fd;
4088                 }
4089         }
4090
4091         if (throttle_us) {
4092                 ret = vmw_wait_lag(dev_priv, &dev_priv->fifo.marker_queue,
4093                                    throttle_us);
4094
4095                 if (ret)
4096                         goto out_free_fence_fd;
4097         }
4098
4099         kernel_commands = vmw_execbuf_cmdbuf(dev_priv, user_commands,
4100                                              kernel_commands, command_size,
4101                                              &header);
4102         if (IS_ERR(kernel_commands)) {
4103                 ret = PTR_ERR(kernel_commands);
4104                 goto out_free_fence_fd;
4105         }
4106
4107         ret = mutex_lock_interruptible(&dev_priv->cmdbuf_mutex);
4108         if (ret) {
4109                 ret = -ERESTARTSYS;
4110                 goto out_free_header;
4111         }
4112
4113         sw_context->kernel = false;
4114         if (kernel_commands == NULL) {
4115                 ret = vmw_resize_cmd_bounce(sw_context, command_size);
4116                 if (unlikely(ret != 0))
4117                         goto out_unlock;
4118
4119
4120                 ret = copy_from_user(sw_context->cmd_bounce,
4121                                      user_commands, command_size);
4122
4123                 if (unlikely(ret != 0)) {
4124                         ret = -EFAULT;
4125                         DRM_ERROR("Failed copying commands.\n");
4126                         goto out_unlock;
4127                 }
4128                 kernel_commands = sw_context->cmd_bounce;
4129         } else if (!header)
4130                 sw_context->kernel = true;
4131
4132         sw_context->fp = vmw_fpriv(file_priv);
4133         sw_context->cur_reloc = 0;
4134         sw_context->cur_val_buf = 0;
4135         INIT_LIST_HEAD(&sw_context->resource_list);
4136         INIT_LIST_HEAD(&sw_context->ctx_resource_list);
4137         sw_context->cur_query_bo = dev_priv->pinned_bo;
4138         sw_context->last_query_ctx = NULL;
4139         sw_context->needs_post_query_barrier = false;
4140         sw_context->dx_ctx_node = NULL;
4141         sw_context->dx_query_mob = NULL;
4142         sw_context->dx_query_ctx = NULL;
4143         memset(sw_context->res_cache, 0, sizeof(sw_context->res_cache));
4144         INIT_LIST_HEAD(&sw_context->validate_nodes);
4145         INIT_LIST_HEAD(&sw_context->res_relocations);
4146         if (sw_context->staged_bindings)
4147                 vmw_binding_state_reset(sw_context->staged_bindings);
4148
4149         if (!sw_context->res_ht_initialized) {
4150                 ret = drm_ht_create(&sw_context->res_ht, VMW_RES_HT_ORDER);
4151                 if (unlikely(ret != 0))
4152                         goto out_unlock;
4153                 sw_context->res_ht_initialized = true;
4154         }
4155         INIT_LIST_HEAD(&sw_context->staged_cmd_res);
4156         INIT_LIST_HEAD(&resource_list);
4157         ret = vmw_execbuf_tie_context(dev_priv, sw_context, dx_context_handle);
4158         if (unlikely(ret != 0)) {
4159                 list_splice_init(&sw_context->ctx_resource_list,
4160                                  &sw_context->resource_list);
4161                 goto out_err_nores;
4162         }
4163
4164         ret = vmw_cmd_check_all(dev_priv, sw_context, kernel_commands,
4165                                 command_size);
4166         /*
4167          * Merge the resource lists before checking the return status
4168          * from vmd_cmd_check_all so that all the open hashtabs will
4169          * be handled properly even if vmw_cmd_check_all fails.
4170          */
4171         list_splice_init(&sw_context->ctx_resource_list,
4172                          &sw_context->resource_list);
4173
4174         if (unlikely(ret != 0))
4175                 goto out_err_nores;
4176
4177         ret = vmw_resources_reserve(sw_context);
4178         if (unlikely(ret != 0))
4179                 goto out_err_nores;
4180
4181         ret = ttm_eu_reserve_buffers(&ticket, &sw_context->validate_nodes,
4182                                      true, NULL);
4183         if (unlikely(ret != 0))
4184                 goto out_err_nores;
4185
4186         ret = vmw_validate_buffers(dev_priv, sw_context);
4187         if (unlikely(ret != 0))
4188                 goto out_err;
4189
4190         ret = vmw_resources_validate(sw_context);
4191         if (unlikely(ret != 0))
4192                 goto out_err;
4193
4194         ret = mutex_lock_interruptible(&dev_priv->binding_mutex);
4195         if (unlikely(ret != 0)) {
4196                 ret = -ERESTARTSYS;
4197                 goto out_err;
4198         }
4199
4200         if (dev_priv->has_mob) {
4201                 ret = vmw_rebind_contexts(sw_context);
4202                 if (unlikely(ret != 0))
4203                         goto out_unlock_binding;
4204         }
4205
4206         if (!header) {
4207                 ret = vmw_execbuf_submit_fifo(dev_priv, kernel_commands,
4208                                               command_size, sw_context);
4209         } else {
4210                 ret = vmw_execbuf_submit_cmdbuf(dev_priv, header, command_size,
4211                                                 sw_context);
4212                 header = NULL;
4213         }
4214         mutex_unlock(&dev_priv->binding_mutex);
4215         if (ret)
4216                 goto out_err;
4217
4218         vmw_query_bo_switch_commit(dev_priv, sw_context);
4219         ret = vmw_execbuf_fence_commands(file_priv, dev_priv,
4220                                          &fence,
4221                                          (user_fence_rep) ? &handle : NULL);
4222         /*
4223          * This error is harmless, because if fence submission fails,
4224          * vmw_fifo_send_fence will sync. The error will be propagated to
4225          * user-space in @fence_rep
4226          */
4227
4228         if (ret != 0)
4229                 DRM_ERROR("Fence submission error. Syncing.\n");
4230
4231         vmw_resources_unreserve(sw_context, false);
4232
4233         ttm_eu_fence_buffer_objects(&ticket, &sw_context->validate_nodes,
4234                                     (void *) fence);
4235
4236         if (unlikely(dev_priv->pinned_bo != NULL &&
4237                      !dev_priv->query_cid_valid))
4238                 __vmw_execbuf_release_pinned_bo(dev_priv, fence);
4239
4240         vmw_clear_validations(sw_context);
4241
4242         /*
4243          * If anything fails here, give up trying to export the fence
4244          * and do a sync since the user mode will not be able to sync
4245          * the fence itself.  This ensures we are still functionally
4246          * correct.
4247          */
4248         if (flags & DRM_VMW_EXECBUF_FLAG_EXPORT_FENCE_FD) {
4249
4250                 sync_file = sync_file_create(&fence->base);
4251                 if (!sync_file) {
4252                         DRM_ERROR("Unable to create sync file for fence\n");
4253                         put_unused_fd(out_fence_fd);
4254                         out_fence_fd = -1;
4255
4256                         (void) vmw_fence_obj_wait(fence, false, false,
4257                                                   VMW_FENCE_WAIT_TIMEOUT);
4258                 }
4259         }
4260
4261         ret = vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv), ret,
4262                                     user_fence_rep, fence, handle, out_fence_fd);
4263
4264         if (sync_file) {
4265                 if (ret) {
4266                         /* usercopy of fence failed, put the file object */
4267                         fput(sync_file->file);
4268                         put_unused_fd(out_fence_fd);
4269                 } else {
4270                         /* Link the fence with the FD created earlier */
4271                         fd_install(out_fence_fd, sync_file->file);
4272                 }
4273         }
4274
4275         /* Don't unreference when handing fence out */
4276         if (unlikely(out_fence != NULL)) {
4277                 *out_fence = fence;
4278                 fence = NULL;
4279         } else if (likely(fence != NULL)) {
4280                 vmw_fence_obj_unreference(&fence);
4281         }
4282
4283         list_splice_init(&sw_context->resource_list, &resource_list);
4284         vmw_cmdbuf_res_commit(&sw_context->staged_cmd_res);
4285         mutex_unlock(&dev_priv->cmdbuf_mutex);
4286
4287         /*
4288          * Unreference resources outside of the cmdbuf_mutex to
4289          * avoid deadlocks in resource destruction paths.
4290          */
4291         vmw_resource_list_unreference(sw_context, &resource_list);
4292
4293         return ret;
4294
4295 out_unlock_binding:
4296         mutex_unlock(&dev_priv->binding_mutex);
4297 out_err:
4298         ttm_eu_backoff_reservation(&ticket, &sw_context->validate_nodes);
4299 out_err_nores:
4300         vmw_resources_unreserve(sw_context, true);
4301         vmw_resource_relocations_free(&sw_context->res_relocations);
4302         vmw_free_relocations(sw_context);
4303         vmw_clear_validations(sw_context);
4304         if (unlikely(dev_priv->pinned_bo != NULL &&
4305                      !dev_priv->query_cid_valid))
4306                 __vmw_execbuf_release_pinned_bo(dev_priv, NULL);
4307 out_unlock:
4308         list_splice_init(&sw_context->resource_list, &resource_list);
4309         error_resource = sw_context->error_resource;
4310         sw_context->error_resource = NULL;
4311         vmw_cmdbuf_res_revert(&sw_context->staged_cmd_res);
4312         mutex_unlock(&dev_priv->cmdbuf_mutex);
4313
4314         /*
4315          * Unreference resources outside of the cmdbuf_mutex to
4316          * avoid deadlocks in resource destruction paths.
4317          */
4318         vmw_resource_list_unreference(sw_context, &resource_list);
4319         if (unlikely(error_resource != NULL))
4320                 vmw_resource_unreference(&error_resource);
4321 out_free_header:
4322         if (header)
4323                 vmw_cmdbuf_header_free(header);
4324 out_free_fence_fd:
4325         if (out_fence_fd >= 0)
4326                 put_unused_fd(out_fence_fd);
4327
4328         return ret;
4329 }
4330
4331 /**
4332  * vmw_execbuf_unpin_panic - Idle the fifo and unpin the query buffer.
4333  *
4334  * @dev_priv: The device private structure.
4335  *
4336  * This function is called to idle the fifo and unpin the query buffer
4337  * if the normal way to do this hits an error, which should typically be
4338  * extremely rare.
4339  */
4340 static void vmw_execbuf_unpin_panic(struct vmw_private *dev_priv)
4341 {
4342         DRM_ERROR("Can't unpin query buffer. Trying to recover.\n");
4343
4344         (void) vmw_fallback_wait(dev_priv, false, true, 0, false, 10*HZ);
4345         vmw_bo_pin_reserved(dev_priv->pinned_bo, false);
4346         if (dev_priv->dummy_query_bo_pinned) {
4347                 vmw_bo_pin_reserved(dev_priv->dummy_query_bo, false);
4348                 dev_priv->dummy_query_bo_pinned = false;
4349         }
4350 }
4351
4352
4353 /**
4354  * __vmw_execbuf_release_pinned_bo - Flush queries and unpin the pinned
4355  * query bo.
4356  *
4357  * @dev_priv: The device private structure.
4358  * @fence: If non-NULL should point to a struct vmw_fence_obj issued
4359  * _after_ a query barrier that flushes all queries touching the current
4360  * buffer pointed to by @dev_priv->pinned_bo
4361  *
4362  * This function should be used to unpin the pinned query bo, or
4363  * as a query barrier when we need to make sure that all queries have
4364  * finished before the next fifo command. (For example on hardware
4365  * context destructions where the hardware may otherwise leak unfinished
4366  * queries).
4367  *
4368  * This function does not return any failure codes, but make attempts
4369  * to do safe unpinning in case of errors.
4370  *
4371  * The function will synchronize on the previous query barrier, and will
4372  * thus not finish until that barrier has executed.
4373  *
4374  * the @dev_priv->cmdbuf_mutex needs to be held by the current thread
4375  * before calling this function.
4376  */
4377 void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv,
4378                                      struct vmw_fence_obj *fence)
4379 {
4380         int ret = 0;
4381         struct list_head validate_list;
4382         struct ttm_validate_buffer pinned_val, query_val;
4383         struct vmw_fence_obj *lfence = NULL;
4384         struct ww_acquire_ctx ticket;
4385
4386         if (dev_priv->pinned_bo == NULL)
4387                 goto out_unlock;
4388
4389         INIT_LIST_HEAD(&validate_list);
4390
4391         pinned_val.bo = ttm_bo_reference(&dev_priv->pinned_bo->base);
4392         pinned_val.shared = false;
4393         list_add_tail(&pinned_val.head, &validate_list);
4394
4395         query_val.bo = ttm_bo_reference(&dev_priv->dummy_query_bo->base);
4396         query_val.shared = false;
4397         list_add_tail(&query_val.head, &validate_list);
4398
4399         ret = ttm_eu_reserve_buffers(&ticket, &validate_list,
4400                                      false, NULL);
4401         if (unlikely(ret != 0)) {
4402                 vmw_execbuf_unpin_panic(dev_priv);
4403                 goto out_no_reserve;
4404         }
4405
4406         if (dev_priv->query_cid_valid) {
4407                 BUG_ON(fence != NULL);
4408                 ret = vmw_fifo_emit_dummy_query(dev_priv, dev_priv->query_cid);
4409                 if (unlikely(ret != 0)) {
4410                         vmw_execbuf_unpin_panic(dev_priv);
4411                         goto out_no_emit;
4412                 }
4413                 dev_priv->query_cid_valid = false;
4414         }
4415
4416         vmw_bo_pin_reserved(dev_priv->pinned_bo, false);
4417         if (dev_priv->dummy_query_bo_pinned) {
4418                 vmw_bo_pin_reserved(dev_priv->dummy_query_bo, false);
4419                 dev_priv->dummy_query_bo_pinned = false;
4420         }
4421         if (fence == NULL) {
4422                 (void) vmw_execbuf_fence_commands(NULL, dev_priv, &lfence,
4423                                                   NULL);
4424                 fence = lfence;
4425         }
4426         ttm_eu_fence_buffer_objects(&ticket, &validate_list, (void *) fence);
4427         if (lfence != NULL)
4428                 vmw_fence_obj_unreference(&lfence);
4429
4430         ttm_bo_unref(&query_val.bo);
4431         ttm_bo_unref(&pinned_val.bo);
4432         vmw_dmabuf_unreference(&dev_priv->pinned_bo);
4433 out_unlock:
4434         return;
4435
4436 out_no_emit:
4437         ttm_eu_backoff_reservation(&ticket, &validate_list);
4438 out_no_reserve:
4439         ttm_bo_unref(&query_val.bo);
4440         ttm_bo_unref(&pinned_val.bo);
4441         vmw_dmabuf_unreference(&dev_priv->pinned_bo);
4442 }
4443
4444 /**
4445  * vmw_execbuf_release_pinned_bo - Flush queries and unpin the pinned
4446  * query bo.
4447  *
4448  * @dev_priv: The device private structure.
4449  *
4450  * This function should be used to unpin the pinned query bo, or
4451  * as a query barrier when we need to make sure that all queries have
4452  * finished before the next fifo command. (For example on hardware
4453  * context destructions where the hardware may otherwise leak unfinished
4454  * queries).
4455  *
4456  * This function does not return any failure codes, but make attempts
4457  * to do safe unpinning in case of errors.
4458  *
4459  * The function will synchronize on the previous query barrier, and will
4460  * thus not finish until that barrier has executed.
4461  */
4462 void vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv)
4463 {
4464         mutex_lock(&dev_priv->cmdbuf_mutex);
4465         if (dev_priv->query_cid_valid)
4466                 __vmw_execbuf_release_pinned_bo(dev_priv, NULL);
4467         mutex_unlock(&dev_priv->cmdbuf_mutex);
4468 }
4469
4470 int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data,
4471                       struct drm_file *file_priv, size_t size)
4472 {
4473         struct vmw_private *dev_priv = vmw_priv(dev);
4474         struct drm_vmw_execbuf_arg arg;
4475         int ret;
4476         static const size_t copy_offset[] = {
4477                 offsetof(struct drm_vmw_execbuf_arg, context_handle),
4478                 sizeof(struct drm_vmw_execbuf_arg)};
4479         struct dma_fence *in_fence = NULL;
4480
4481         if (unlikely(size < copy_offset[0])) {
4482                 DRM_ERROR("Invalid command size, ioctl %d\n",
4483                           DRM_VMW_EXECBUF);
4484                 return -EINVAL;
4485         }
4486
4487         if (copy_from_user(&arg, (void __user *) data, copy_offset[0]) != 0)
4488                 return -EFAULT;
4489
4490         /*
4491          * Extend the ioctl argument while
4492          * maintaining backwards compatibility:
4493          * We take different code paths depending on the value of
4494          * arg.version.
4495          */
4496
4497         if (unlikely(arg.version > DRM_VMW_EXECBUF_VERSION ||
4498                      arg.version == 0)) {
4499                 DRM_ERROR("Incorrect execbuf version.\n");
4500                 return -EINVAL;
4501         }
4502
4503         if (arg.version > 1 &&
4504             copy_from_user(&arg.context_handle,
4505                            (void __user *) (data + copy_offset[0]),
4506                            copy_offset[arg.version - 1] -
4507                            copy_offset[0]) != 0)
4508                 return -EFAULT;
4509
4510         switch (arg.version) {
4511         case 1:
4512                 arg.context_handle = (uint32_t) -1;
4513                 break;
4514         case 2:
4515         default:
4516                 break;
4517         }
4518
4519
4520         /* If imported a fence FD from elsewhere, then wait on it */
4521         if (arg.flags & DRM_VMW_EXECBUF_FLAG_IMPORT_FENCE_FD) {
4522                 in_fence = sync_file_get_fence(arg.imported_fence_fd);
4523
4524                 if (!in_fence) {
4525                         DRM_ERROR("Cannot get imported fence\n");
4526                         return -EINVAL;
4527                 }
4528
4529                 ret = vmw_wait_dma_fence(dev_priv->fman, in_fence);
4530                 if (ret)
4531                         goto out;
4532         }
4533
4534         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
4535         if (unlikely(ret != 0))
4536                 return ret;
4537
4538         ret = vmw_execbuf_process(file_priv, dev_priv,
4539                                   (void __user *)(unsigned long)arg.commands,
4540                                   NULL, arg.command_size, arg.throttle_us,
4541                                   arg.context_handle,
4542                                   (void __user *)(unsigned long)arg.fence_rep,
4543                                   NULL,
4544                                   arg.flags);
4545         ttm_read_unlock(&dev_priv->reservation_sem);
4546         if (unlikely(ret != 0))
4547                 goto out;
4548
4549         vmw_kms_cursor_post_execbuf(dev_priv);
4550
4551 out:
4552         if (in_fence)
4553                 dma_fence_put(in_fence);
4554         return ret;
4555 }