drivers/gpu/drm/vmwgfx/vmwgfx_surface.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
  28 #include <drm/ttm/ttm_placement.h>
  29
  30 #include "vmwgfx_drv.h"
  31 #include "vmwgfx_resource_priv.h"
  32 #include "vmwgfx_so.h"
  33 #include "vmwgfx_binding.h"
  34 #include "device_include/svga3d_surfacedefs.h"
  35
  36
  37 /**
  38  * struct vmw_user_surface - User-space visible surface resource
  39  *
  40  * @base:           The TTM base object handling user-space visibility.
  41  * @srf:            The surface metadata.
  42  * @size:           TTM accounting size for the surface.
  43  * @master: master of the creating client. Used for security check.
  44  */
  45 struct vmw_user_surface {
  46         struct ttm_prime_object prime;
  47         struct vmw_surface srf;
  48         uint32_t size;
  49         struct drm_master *master;
  50         struct ttm_base_object *backup_base;
  51 };
  52
  53 /**
  54  * struct vmw_surface_offset - Backing store mip level offset info
  55  *
  56  * @face:           Surface face.
  57  * @mip:            Mip level.
  58  * @bo_offset:      Offset into backing store of this mip level.
  59  *
  60  */
  61 struct vmw_surface_offset {
  62         uint32_t face;
  63         uint32_t mip;
  64         uint32_t bo_offset;
  65 };
  66
  67 static void vmw_user_surface_free(struct vmw_resource *res);
  68 static struct vmw_resource *
  69 vmw_user_surface_base_to_res(struct ttm_base_object *base);
  70 static int vmw_legacy_srf_bind(struct vmw_resource *res,
  71                                struct ttm_validate_buffer *val_buf);
  72 static int vmw_legacy_srf_unbind(struct vmw_resource *res,
  73                                  bool readback,
  74                                  struct ttm_validate_buffer *val_buf);
  75 static int vmw_legacy_srf_create(struct vmw_resource *res);
  76 static int vmw_legacy_srf_destroy(struct vmw_resource *res);
  77 static int vmw_gb_surface_create(struct vmw_resource *res);
  78 static int vmw_gb_surface_bind(struct vmw_resource *res,
  79                                struct ttm_validate_buffer *val_buf);
  80 static int vmw_gb_surface_unbind(struct vmw_resource *res,
  81                                  bool readback,
  82                                  struct ttm_validate_buffer *val_buf);
  83 static int vmw_gb_surface_destroy(struct vmw_resource *res);
  84
  85
  86 static const struct vmw_user_resource_conv user_surface_conv = {
  87         .object_type = VMW_RES_SURFACE,
  88         .base_obj_to_res = vmw_user_surface_base_to_res,
  89         .res_free = vmw_user_surface_free
  90 };
  91
  92 const struct vmw_user_resource_conv *user_surface_converter =
  93         &user_surface_conv;
  94
  95
  96 static uint64_t vmw_user_surface_size;
  97
  98 static const struct vmw_res_func vmw_legacy_surface_func = {
  99         .res_type = vmw_res_surface,
 100         .needs_backup = false,
 101         .may_evict = true,
 102         .type_name = "legacy surfaces",
 103         .backup_placement = &vmw_srf_placement,
 104         .create = &vmw_legacy_srf_create,
 105         .destroy = &vmw_legacy_srf_destroy,
 106         .bind = &vmw_legacy_srf_bind,
 107         .unbind = &vmw_legacy_srf_unbind
 108 };
 109
 110 static const struct vmw_res_func vmw_gb_surface_func = {
 111         .res_type = vmw_res_surface,
 112         .needs_backup = true,
 113         .may_evict = true,
 114         .type_name = "guest backed surfaces",
 115         .backup_placement = &vmw_mob_placement,
 116         .create = vmw_gb_surface_create,
 117         .destroy = vmw_gb_surface_destroy,
 118         .bind = vmw_gb_surface_bind,
 119         .unbind = vmw_gb_surface_unbind
 120 };
 121
 122 /**
 123  * struct vmw_surface_dma - SVGA3D DMA command
 124  */
 125 struct vmw_surface_dma {
 126         SVGA3dCmdHeader header;
 127         SVGA3dCmdSurfaceDMA body;
 128         SVGA3dCopyBox cb;
 129         SVGA3dCmdSurfaceDMASuffix suffix;
 130 };
 131
 132 /**
 133  * struct vmw_surface_define - SVGA3D Surface Define command
 134  */
 135 struct vmw_surface_define {
 136         SVGA3dCmdHeader header;
 137         SVGA3dCmdDefineSurface body;
 138 };
 139
 140 /**
 141  * struct vmw_surface_destroy - SVGA3D Surface Destroy command
 142  */
 143 struct vmw_surface_destroy {
 144         SVGA3dCmdHeader header;
 145         SVGA3dCmdDestroySurface body;
 146 };
 147
 148
 149 /**
 150  * vmw_surface_dma_size - Compute fifo size for a dma command.
 151  *
 152  * @srf: Pointer to a struct vmw_surface
 153  *
 154  * Computes the required size for a surface dma command for backup or
 155  * restoration of the surface represented by @srf.
 156  */
 157 static inline uint32_t vmw_surface_dma_size(const struct vmw_surface *srf)
 158 {
 159         return srf->num_sizes * sizeof(struct vmw_surface_dma);
 160 }
 161
 162
 163 /**
 164  * vmw_surface_define_size - Compute fifo size for a surface define command.
 165  *
 166  * @srf: Pointer to a struct vmw_surface
 167  *
 168  * Computes the required size for a surface define command for the definition
 169  * of the surface represented by @srf.
 170  */
 171 static inline uint32_t vmw_surface_define_size(const struct vmw_surface *srf)
 172 {
 173         return sizeof(struct vmw_surface_define) + srf->num_sizes *
 174                 sizeof(SVGA3dSize);
 175 }
 176
 177
 178 /**
 179  * vmw_surface_destroy_size - Compute fifo size for a surface destroy command.
 180  *
 181  * Computes the required size for a surface destroy command for the destruction
 182  * of a hw surface.
 183  */
 184 static inline uint32_t vmw_surface_destroy_size(void)
 185 {
 186         return sizeof(struct vmw_surface_destroy);
 187 }
 188
 189 /**
 190  * vmw_surface_destroy_encode - Encode a surface_destroy command.
 191  *
 192  * @id: The surface id
 193  * @cmd_space: Pointer to memory area in which the commands should be encoded.
 194  */
 195 static void vmw_surface_destroy_encode(uint32_t id,
 196                                        void *cmd_space)
 197 {
 198         struct vmw_surface_destroy *cmd = (struct vmw_surface_destroy *)
 199                 cmd_space;
 200
 201         cmd->header.id = SVGA_3D_CMD_SURFACE_DESTROY;
 202         cmd->header.size = sizeof(cmd->body);
 203         cmd->body.sid = id;
 204 }
 205
 206 /**
 207  * vmw_surface_define_encode - Encode a surface_define command.
 208  *
 209  * @srf: Pointer to a struct vmw_surface object.
 210  * @cmd_space: Pointer to memory area in which the commands should be encoded.
 211  */
 212 static void vmw_surface_define_encode(const struct vmw_surface *srf,
 213                                       void *cmd_space)
 214 {
 215         struct vmw_surface_define *cmd = (struct vmw_surface_define *)
 216                 cmd_space;
 217         struct drm_vmw_size *src_size;
 218         SVGA3dSize *cmd_size;
 219         uint32_t cmd_len;
 220         int i;
 221
 222         cmd_len = sizeof(cmd->body) + srf->num_sizes * sizeof(SVGA3dSize);
 223
 224         cmd->header.id = SVGA_3D_CMD_SURFACE_DEFINE;
 225         cmd->header.size = cmd_len;
 226         cmd->body.sid = srf->res.id;
 227         cmd->body.surfaceFlags = srf->flags;
 228         cmd->body.format = srf->format;
 229         for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
 230                 cmd->body.face[i].numMipLevels = srf->mip_levels[i];
 231
 232         cmd += 1;
 233         cmd_size = (SVGA3dSize *) cmd;
 234         src_size = srf->sizes;
 235
 236         for (i = 0; i < srf->num_sizes; ++i, cmd_size++, src_size++) {
 237                 cmd_size->width = src_size->width;
 238                 cmd_size->height = src_size->height;
 239                 cmd_size->depth = src_size->depth;
 240         }
 241 }
 242
 243 /**
 244  * vmw_surface_dma_encode - Encode a surface_dma command.
 245  *
 246  * @srf: Pointer to a struct vmw_surface object.
 247  * @cmd_space: Pointer to memory area in which the commands should be encoded.
 248  * @ptr: Pointer to an SVGAGuestPtr indicating where the surface contents
 249  * should be placed or read from.
 250  * @to_surface: Boolean whether to DMA to the surface or from the surface.
 251  */
 252 static void vmw_surface_dma_encode(struct vmw_surface *srf,
 253                                    void *cmd_space,
 254                                    const SVGAGuestPtr *ptr,
 255                                    bool to_surface)
 256 {
 257         uint32_t i;
 258         struct vmw_surface_dma *cmd = (struct vmw_surface_dma *)cmd_space;
 259         const struct svga3d_surface_desc *desc =
 260                 svga3dsurface_get_desc(srf->format);
 261
 262         for (i = 0; i < srf->num_sizes; ++i) {
 263                 SVGA3dCmdHeader *header = &cmd->header;
 264                 SVGA3dCmdSurfaceDMA *body = &cmd->body;
 265                 SVGA3dCopyBox *cb = &cmd->cb;
 266                 SVGA3dCmdSurfaceDMASuffix *suffix = &cmd->suffix;
 267                 const struct vmw_surface_offset *cur_offset = &srf->offsets[i];
 268                 const struct drm_vmw_size *cur_size = &srf->sizes[i];
 269
 270                 header->id = SVGA_3D_CMD_SURFACE_DMA;
 271                 header->size = sizeof(*body) + sizeof(*cb) + sizeof(*suffix);
 272
 273                 body->guest.ptr = *ptr;
 274                 body->guest.ptr.offset += cur_offset->bo_offset;
 275                 body->guest.pitch = svga3dsurface_calculate_pitch(desc,
 276                                                                   cur_size);
 277                 body->host.sid = srf->res.id;
 278                 body->host.face = cur_offset->face;
 279                 body->host.mipmap = cur_offset->mip;
 280                 body->transfer = ((to_surface) ?  SVGA3D_WRITE_HOST_VRAM :
 281                                   SVGA3D_READ_HOST_VRAM);
 282                 cb->x = 0;
 283                 cb->y = 0;
 284                 cb->z = 0;
 285                 cb->srcx = 0;
 286                 cb->srcy = 0;
 287                 cb->srcz = 0;
 288                 cb->w = cur_size->width;
 289                 cb->h = cur_size->height;
 290                 cb->d = cur_size->depth;
 291
 292                 suffix->suffixSize = sizeof(*suffix);
 293                 suffix->maximumOffset =
 294                         svga3dsurface_get_image_buffer_size(desc, cur_size,
 295                                                             body->guest.pitch);
 296                 suffix->flags.discard = 0;
 297                 suffix->flags.unsynchronized = 0;
 298                 suffix->flags.reserved = 0;
 299                 ++cmd;
 300         }
 301 };
 302
 303
 304 /**
 305  * vmw_hw_surface_destroy - destroy a Device surface
 306  *
 307  * @res:        Pointer to a struct vmw_resource embedded in a struct
 308  *              vmw_surface.
 309  *
 310  * Destroys a the device surface associated with a struct vmw_surface if
 311  * any, and adjusts accounting and resource count accordingly.
 312  */
 313 static void vmw_hw_surface_destroy(struct vmw_resource *res)
 314 {
 315
 316         struct vmw_private *dev_priv = res->dev_priv;
 317         struct vmw_surface *srf;
 318         void *cmd;
 319
 320         if (res->func->destroy == vmw_gb_surface_destroy) {
 321                 (void) vmw_gb_surface_destroy(res);
 322                 return;
 323         }
 324
 325         if (res->id != -1) {
 326
 327                 cmd = vmw_fifo_reserve(dev_priv, vmw_surface_destroy_size());
 328                 if (unlikely(!cmd)) {
 329                         DRM_ERROR("Failed reserving FIFO space for surface "
 330                                   "destruction.\n");
 331                         return;
 332                 }
 333
 334                 vmw_surface_destroy_encode(res->id, cmd);
 335                 vmw_fifo_commit(dev_priv, vmw_surface_destroy_size());
 336
 337                 /*
 338                  * used_memory_size_atomic, or separate lock
 339                  * to avoid taking dev_priv::cmdbuf_mutex in
 340                  * the destroy path.
 341                  */
 342
 343                 mutex_lock(&dev_priv->cmdbuf_mutex);
 344                 srf = vmw_res_to_srf(res);
 345                 dev_priv->used_memory_size -= res->backup_size;
 346                 mutex_unlock(&dev_priv->cmdbuf_mutex);
 347         }
 348         vmw_fifo_resource_dec(dev_priv);
 349 }
 350
 351 /**
 352  * vmw_legacy_srf_create - Create a device surface as part of the
 353  * resource validation process.
 354  *
 355  * @res: Pointer to a struct vmw_surface.
 356  *
 357  * If the surface doesn't have a hw id.
 358  *
 359  * Returns -EBUSY if there wasn't sufficient device resources to
 360  * complete the validation. Retry after freeing up resources.
 361  *
 362  * May return other errors if the kernel is out of guest resources.
 363  */
 364 static int vmw_legacy_srf_create(struct vmw_resource *res)
 365 {
 366         struct vmw_private *dev_priv = res->dev_priv;
 367         struct vmw_surface *srf;
 368         uint32_t submit_size;
 369         uint8_t *cmd;
 370         int ret;
 371
 372         if (likely(res->id != -1))
 373                 return 0;
 374
 375         srf = vmw_res_to_srf(res);
 376         if (unlikely(dev_priv->used_memory_size + res->backup_size >=
 377                      dev_priv->memory_size))
 378                 return -EBUSY;
 379
 380         /*
 381          * Alloc id for the resource.
 382          */
 383
 384         ret = vmw_resource_alloc_id(res);
 385         if (unlikely(ret != 0)) {
 386                 DRM_ERROR("Failed to allocate a surface id.\n");
 387                 goto out_no_id;
 388         }
 389
 390         if (unlikely(res->id >= SVGA3D_MAX_SURFACE_IDS)) {
 391                 ret = -EBUSY;
 392                 goto out_no_fifo;
 393         }
 394
 395         /*
 396          * Encode surface define- commands.
 397          */
 398
 399         submit_size = vmw_surface_define_size(srf);
 400         cmd = vmw_fifo_reserve(dev_priv, submit_size);
 401         if (unlikely(!cmd)) {
 402                 DRM_ERROR("Failed reserving FIFO space for surface "
 403                           "creation.\n");
 404                 ret = -ENOMEM;
 405                 goto out_no_fifo;
 406         }
 407
 408         vmw_surface_define_encode(srf, cmd);
 409         vmw_fifo_commit(dev_priv, submit_size);
 410         /*
 411          * Surface memory usage accounting.
 412          */
 413
 414         dev_priv->used_memory_size += res->backup_size;
 415         return 0;
 416
 417 out_no_fifo:
 418         vmw_resource_release_id(res);
 419 out_no_id:
 420         return ret;
 421 }
 422
 423 /**
 424  * vmw_legacy_srf_dma - Copy backup data to or from a legacy surface.
 425  *
 426  * @res:            Pointer to a struct vmw_res embedded in a struct
 427  *                  vmw_surface.
 428  * @val_buf:        Pointer to a struct ttm_validate_buffer containing
 429  *                  information about the backup buffer.
 430  * @bind:           Boolean wether to DMA to the surface.
 431  *
 432  * Transfer backup data to or from a legacy surface as part of the
 433  * validation process.
 434  * May return other errors if the kernel is out of guest resources.
 435  * The backup buffer will be fenced or idle upon successful completion,
 436  * and if the surface needs persistent backup storage, the backup buffer
 437  * will also be returned reserved iff @bind is true.
 438  */
 439 static int vmw_legacy_srf_dma(struct vmw_resource *res,
 440                               struct ttm_validate_buffer *val_buf,
 441                               bool bind)
 442 {
 443         SVGAGuestPtr ptr;
 444         struct vmw_fence_obj *fence;
 445         uint32_t submit_size;
 446         struct vmw_surface *srf = vmw_res_to_srf(res);
 447         uint8_t *cmd;
 448         struct vmw_private *dev_priv = res->dev_priv;
 449
 450         BUG_ON(!val_buf->bo);
 451         submit_size = vmw_surface_dma_size(srf);
 452         cmd = vmw_fifo_reserve(dev_priv, submit_size);
 453         if (unlikely(!cmd)) {
 454                 DRM_ERROR("Failed reserving FIFO space for surface "
 455                           "DMA.\n");
 456                 return -ENOMEM;
 457         }
 458         vmw_bo_get_guest_ptr(val_buf->bo, &ptr);
 459         vmw_surface_dma_encode(srf, cmd, &ptr, bind);
 460
 461         vmw_fifo_commit(dev_priv, submit_size);
 462
 463         /*
 464          * Create a fence object and fence the backup buffer.
 465          */
 466
 467         (void) vmw_execbuf_fence_commands(NULL, dev_priv,
 468                                           &fence, NULL);
 469
 470         vmw_fence_single_bo(val_buf->bo, fence);
 471
 472         if (likely(fence != NULL))
 473                 vmw_fence_obj_unreference(&fence);
 474
 475         return 0;
 476 }
 477
 478 /**
 479  * vmw_legacy_srf_bind - Perform a legacy surface bind as part of the
 480  *                       surface validation process.
 481  *
 482  * @res:            Pointer to a struct vmw_res embedded in a struct
 483  *                  vmw_surface.
 484  * @val_buf:        Pointer to a struct ttm_validate_buffer containing
 485  *                  information about the backup buffer.
 486  *
 487  * This function will copy backup data to the surface if the
 488  * backup buffer is dirty.
 489  */
 490 static int vmw_legacy_srf_bind(struct vmw_resource *res,
 491                                struct ttm_validate_buffer *val_buf)
 492 {
 493         if (!res->backup_dirty)
 494                 return 0;
 495
 496         return vmw_legacy_srf_dma(res, val_buf, true);
 497 }
 498
 499
 500 /**
 501  * vmw_legacy_srf_unbind - Perform a legacy surface unbind as part of the
 502  *                         surface eviction process.
 503  *
 504  * @res:            Pointer to a struct vmw_res embedded in a struct
 505  *                  vmw_surface.
 506  * @val_buf:        Pointer to a struct ttm_validate_buffer containing
 507  *                  information about the backup buffer.
 508  *
 509  * This function will copy backup data from the surface.
 510  */
 511 static int vmw_legacy_srf_unbind(struct vmw_resource *res,
 512                                  bool readback,
 513                                  struct ttm_validate_buffer *val_buf)
 514 {
 515         if (unlikely(readback))
 516                 return vmw_legacy_srf_dma(res, val_buf, false);
 517         return 0;
 518 }
 519
 520 /**
 521  * vmw_legacy_srf_destroy - Destroy a device surface as part of a
 522  *                          resource eviction process.
 523  *
 524  * @res:            Pointer to a struct vmw_res embedded in a struct
 525  *                  vmw_surface.
 526  */
 527 static int vmw_legacy_srf_destroy(struct vmw_resource *res)
 528 {
 529         struct vmw_private *dev_priv = res->dev_priv;
 530         uint32_t submit_size;
 531         uint8_t *cmd;
 532
 533         BUG_ON(res->id == -1);
 534
 535         /*
 536          * Encode the dma- and surface destroy commands.
 537          */
 538
 539         submit_size = vmw_surface_destroy_size();
 540         cmd = vmw_fifo_reserve(dev_priv, submit_size);
 541         if (unlikely(!cmd)) {
 542                 DRM_ERROR("Failed reserving FIFO space for surface "
 543                           "eviction.\n");
 544                 return -ENOMEM;
 545         }
 546
 547         vmw_surface_destroy_encode(res->id, cmd);
 548         vmw_fifo_commit(dev_priv, submit_size);
 549
 550         /*
 551          * Surface memory usage accounting.
 552          */
 553
 554         dev_priv->used_memory_size -= res->backup_size;
 555
 556         /*
 557          * Release the surface ID.
 558          */
 559
 560         vmw_resource_release_id(res);
 561
 562         return 0;
 563 }
 564
 565
 566 /**
 567  * vmw_surface_init - initialize a struct vmw_surface
 568  *
 569  * @dev_priv:       Pointer to a device private struct.
 570  * @srf:            Pointer to the struct vmw_surface to initialize.
 571  * @res_free:       Pointer to a resource destructor used to free
 572  *                  the object.
 573  */
 574 static int vmw_surface_init(struct vmw_private *dev_priv,
 575                             struct vmw_surface *srf,
 576                             void (*res_free) (struct vmw_resource *res))
 577 {
 578         int ret;
 579         struct vmw_resource *res = &srf->res;
 580
 581         BUG_ON(!res_free);
 582         if (!dev_priv->has_mob)
 583                 vmw_fifo_resource_inc(dev_priv);
 584         ret = vmw_resource_init(dev_priv, res, true, res_free,
 585                                 (dev_priv->has_mob) ? &vmw_gb_surface_func :
 586                                 &vmw_legacy_surface_func);
 587
 588         if (unlikely(ret != 0)) {
 589                 if (!dev_priv->has_mob)
 590                         vmw_fifo_resource_dec(dev_priv);
 591                 res_free(res);
 592                 return ret;
 593         }
 594
 595         /*
 596          * The surface won't be visible to hardware until a
 597          * surface validate.
 598          */
 599
 600         INIT_LIST_HEAD(&srf->view_list);
 601         vmw_resource_activate(res, vmw_hw_surface_destroy);
 602         return ret;
 603 }
 604
 605 /**
 606  * vmw_user_surface_base_to_res - TTM base object to resource converter for
 607  *                                user visible surfaces
 608  *
 609  * @base:           Pointer to a TTM base object
 610  *
 611  * Returns the struct vmw_resource embedded in a struct vmw_surface
 612  * for the user-visible object identified by the TTM base object @base.
 613  */
 614 static struct vmw_resource *
 615 vmw_user_surface_base_to_res(struct ttm_base_object *base)
 616 {
 617         return &(container_of(base, struct vmw_user_surface,
 618                               prime.base)->srf.res);
 619 }
 620
 621 /**
 622  * vmw_user_surface_free - User visible surface resource destructor
 623  *
 624  * @res:            A struct vmw_resource embedded in a struct vmw_surface.
 625  */
 626 static void vmw_user_surface_free(struct vmw_resource *res)
 627 {
 628         struct vmw_surface *srf = vmw_res_to_srf(res);
 629         struct vmw_user_surface *user_srf =
 630             container_of(srf, struct vmw_user_surface, srf);
 631         struct vmw_private *dev_priv = srf->res.dev_priv;
 632         uint32_t size = user_srf->size;
 633
 634         if (user_srf->master)
 635                 drm_master_put(&user_srf->master);
 636         kfree(srf->offsets);
 637         kfree(srf->sizes);
 638         kfree(srf->snooper.image);
 639         ttm_prime_object_kfree(user_srf, prime);
 640         ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
 641 }
 642
 643 /**
 644  * vmw_user_surface_free - User visible surface TTM base object destructor
 645  *
 646  * @p_base:         Pointer to a pointer to a TTM base object
 647  *                  embedded in a struct vmw_user_surface.
 648  *
 649  * Drops the base object's reference on its resource, and the
 650  * pointer pointed to by *p_base is set to NULL.
 651  */
 652 static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
 653 {
 654         struct ttm_base_object *base = *p_base;
 655         struct vmw_user_surface *user_srf =
 656             container_of(base, struct vmw_user_surface, prime.base);
 657         struct vmw_resource *res = &user_srf->srf.res;
 658
 659         *p_base = NULL;
 660         if (user_srf->backup_base)
 661                 ttm_base_object_unref(&user_srf->backup_base);
 662         vmw_resource_unreference(&res);
 663 }
 664
 665 /**
 666  * vmw_user_surface_destroy_ioctl - Ioctl function implementing
 667  *                                  the user surface destroy functionality.
 668  *
 669  * @dev:            Pointer to a struct drm_device.
 670  * @data:           Pointer to data copied from / to user-space.
 671  * @file_priv:      Pointer to a drm file private structure.
 672  */
 673 int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
 674                               struct drm_file *file_priv)
 675 {
 676         struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data;
 677         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 678
 679         return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE);
 680 }
 681
 682 /**
 683  * vmw_user_surface_define_ioctl - Ioctl function implementing
 684  *                                  the user surface define functionality.
 685  *
 686  * @dev:            Pointer to a struct drm_device.
 687  * @data:           Pointer to data copied from / to user-space.
 688  * @file_priv:      Pointer to a drm file private structure.
 689  */
 690 int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
 691                              struct drm_file *file_priv)
 692 {
 693         struct vmw_private *dev_priv = vmw_priv(dev);
 694         struct vmw_user_surface *user_srf;
 695         struct vmw_surface *srf;
 696         struct vmw_resource *res;
 697         struct vmw_resource *tmp;
 698         union drm_vmw_surface_create_arg *arg =
 699             (union drm_vmw_surface_create_arg *)data;
 700         struct drm_vmw_surface_create_req *req = &arg->req;
 701         struct drm_vmw_surface_arg *rep = &arg->rep;
 702         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 703         int ret;
 704         int i, j;
 705         uint32_t cur_bo_offset;
 706         struct drm_vmw_size *cur_size;
 707         struct vmw_surface_offset *cur_offset;
 708         uint32_t num_sizes;
 709         uint32_t size;
 710         const struct svga3d_surface_desc *desc;
 711
 712         if (unlikely(vmw_user_surface_size == 0))
 713                 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
 714                         128;
 715
 716         num_sizes = 0;
 717         for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
 718                 if (req->mip_levels[i] > DRM_VMW_MAX_MIP_LEVELS)
 719                         return -EINVAL;
 720                 num_sizes += req->mip_levels[i];
 721         }
 722
 723         if (num_sizes > DRM_VMW_MAX_SURFACE_FACES * DRM_VMW_MAX_MIP_LEVELS ||
 724             num_sizes == 0)
 725                 return -EINVAL;
 726
 727         size = vmw_user_surface_size + 128 +
 728                 ttm_round_pot(num_sizes * sizeof(struct drm_vmw_size)) +
 729                 ttm_round_pot(num_sizes * sizeof(struct vmw_surface_offset));
 730
 731
 732         desc = svga3dsurface_get_desc(req->format);
 733         if (unlikely(desc->block_desc == SVGA3DBLOCKDESC_NONE)) {
 734                 DRM_ERROR("Invalid surface format for surface creation.\n");
 735                 DRM_ERROR("Format requested is: %d\n", req->format);
 736                 return -EINVAL;
 737         }
 738
 739         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 740         if (unlikely(ret != 0))
 741                 return ret;
 742
 743         ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
 744                                    size, false, true);
 745         if (unlikely(ret != 0)) {
 746                 if (ret != -ERESTARTSYS)
 747                         DRM_ERROR("Out of graphics memory for surface"
 748                                   " creation.\n");
 749                 goto out_unlock;
 750         }
 751
 752         user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
 753         if (unlikely(!user_srf)) {
 754                 ret = -ENOMEM;
 755                 goto out_no_user_srf;
 756         }
 757
 758         srf = &user_srf->srf;
 759         res = &srf->res;
 760
 761         srf->flags = req->flags;
 762         srf->format = req->format;
 763         srf->scanout = req->scanout;
 764
 765         memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels));
 766         srf->num_sizes = num_sizes;
 767         user_srf->size = size;
 768         srf->sizes = memdup_user((struct drm_vmw_size __user *)(unsigned long)
 769                                  req->size_addr,
 770                                  sizeof(*srf->sizes) * srf->num_sizes);
 771         if (IS_ERR(srf->sizes)) {
 772                 ret = PTR_ERR(srf->sizes);
 773                 goto out_no_sizes;
 774         }
 775         srf->offsets = kmalloc_array(srf->num_sizes,
 776                                      sizeof(*srf->offsets),
 777                                      GFP_KERNEL);
 778         if (unlikely(!srf->offsets)) {
 779                 ret = -ENOMEM;
 780                 goto out_no_offsets;
 781         }
 782
 783         srf->base_size = *srf->sizes;
 784         srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
 785         srf->multisample_count = 0;
 786
 787         cur_bo_offset = 0;
 788         cur_offset = srf->offsets;
 789         cur_size = srf->sizes;
 790
 791         for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
 792                 for (j = 0; j < srf->mip_levels[i]; ++j) {
 793                         uint32_t stride = svga3dsurface_calculate_pitch
 794                                 (desc, cur_size);
 795
 796                         cur_offset->face = i;
 797                         cur_offset->mip = j;
 798                         cur_offset->bo_offset = cur_bo_offset;
 799                         cur_bo_offset += svga3dsurface_get_image_buffer_size
 800                                 (desc, cur_size, stride);
 801                         ++cur_offset;
 802                         ++cur_size;
 803                 }
 804         }
 805         res->backup_size = cur_bo_offset;
 806         if (srf->scanout &&
 807             srf->num_sizes == 1 &&
 808             srf->sizes[0].width == 64 &&
 809             srf->sizes[0].height == 64 &&
 810             srf->format == SVGA3D_A8R8G8B8) {
 811
 812                 srf->snooper.image = kzalloc(64 * 64 * 4, GFP_KERNEL);
 813                 if (!srf->snooper.image) {
 814                         DRM_ERROR("Failed to allocate cursor_image\n");
 815                         ret = -ENOMEM;
 816                         goto out_no_copy;
 817                 }
 818         } else {
 819                 srf->snooper.image = NULL;
 820         }
 821
 822         user_srf->prime.base.shareable = false;
 823         user_srf->prime.base.tfile = NULL;
 824         if (drm_is_primary_client(file_priv))
 825                 user_srf->master = drm_master_get(file_priv->master);
 826
 827         /**
 828          * From this point, the generic resource management functions
 829          * destroy the object on failure.
 830          */
 831
 832         ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
 833         if (unlikely(ret != 0))
 834                 goto out_unlock;
 835
 836         /*
 837          * A gb-aware client referencing a shared surface will
 838          * expect a backup buffer to be present.
 839          */
 840         if (dev_priv->has_mob && req->shareable) {
 841                 uint32_t backup_handle;
 842
 843                 ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
 844                                             res->backup_size,
 845                                             true,
 846                                             &backup_handle,
 847                                             &res->backup,
 848                                             &user_srf->backup_base);
 849                 if (unlikely(ret != 0)) {
 850                         vmw_resource_unreference(&res);
 851                         goto out_unlock;
 852                 }
 853         }
 854
 855         tmp = vmw_resource_reference(&srf->res);
 856         ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
 857                                     req->shareable, VMW_RES_SURFACE,
 858                                     &vmw_user_surface_base_release, NULL);
 859
 860         if (unlikely(ret != 0)) {
 861                 vmw_resource_unreference(&tmp);
 862                 vmw_resource_unreference(&res);
 863                 goto out_unlock;
 864         }
 865
 866         rep->sid = user_srf->prime.base.hash.key;
 867         vmw_resource_unreference(&res);
 868
 869         ttm_read_unlock(&dev_priv->reservation_sem);
 870         return 0;
 871 out_no_copy:
 872         kfree(srf->offsets);
 873 out_no_offsets:
 874         kfree(srf->sizes);
 875 out_no_sizes:
 876         ttm_prime_object_kfree(user_srf, prime);
 877 out_no_user_srf:
 878         ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
 879 out_unlock:
 880         ttm_read_unlock(&dev_priv->reservation_sem);
 881         return ret;
 882 }
 883
 884
 885 static int
 886 vmw_surface_handle_reference(struct vmw_private *dev_priv,
 887                              struct drm_file *file_priv,
 888                              uint32_t u_handle,
 889                              enum drm_vmw_handle_type handle_type,
 890                              struct ttm_base_object **base_p)
 891 {
 892         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 893         struct vmw_user_surface *user_srf;
 894         uint32_t handle;
 895         struct ttm_base_object *base;
 896         int ret;
 897         bool require_exist = false;
 898
 899         if (handle_type == DRM_VMW_HANDLE_PRIME) {
 900                 ret = ttm_prime_fd_to_handle(tfile, u_handle, &handle);
 901                 if (unlikely(ret != 0))
 902                         return ret;
 903         } else {
 904                 if (unlikely(drm_is_render_client(file_priv)))
 905                         require_exist = true;
 906
 907                 if (ACCESS_ONCE(vmw_fpriv(file_priv)->locked_master)) {
 908                         DRM_ERROR("Locked master refused legacy "
 909                                   "surface reference.\n");
 910                         return -EACCES;
 911                 }
 912
 913                 handle = u_handle;
 914         }
 915
 916         ret = -EINVAL;
 917         base = ttm_base_object_lookup_for_ref(dev_priv->tdev, handle);
 918         if (unlikely(!base)) {
 919                 DRM_ERROR("Could not find surface to reference.\n");
 920                 goto out_no_lookup;
 921         }
 922
 923         if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE)) {
 924                 DRM_ERROR("Referenced object is not a surface.\n");
 925                 goto out_bad_resource;
 926         }
 927
 928         if (handle_type != DRM_VMW_HANDLE_PRIME) {
 929                 user_srf = container_of(base, struct vmw_user_surface,
 930                                         prime.base);
 931
 932                 /*
 933                  * Make sure the surface creator has the same
 934                  * authenticating master, or is already registered with us.
 935                  */
 936                 if (drm_is_primary_client(file_priv) &&
 937                     user_srf->master != file_priv->master)
 938                         require_exist = true;
 939
 940                 ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL,
 941                                          require_exist);
 942                 if (unlikely(ret != 0)) {
 943                         DRM_ERROR("Could not add a reference to a surface.\n");
 944                         goto out_bad_resource;
 945                 }
 946         }
 947
 948         *base_p = base;
 949         return 0;
 950
 951 out_bad_resource:
 952         ttm_base_object_unref(&base);
 953 out_no_lookup:
 954         if (handle_type == DRM_VMW_HANDLE_PRIME)
 955                 (void) ttm_ref_object_base_unref(tfile, handle, TTM_REF_USAGE);
 956
 957         return ret;
 958 }
 959
 960 /**
 961  * vmw_user_surface_define_ioctl - Ioctl function implementing
 962  *                                  the user surface reference functionality.
 963  *
 964  * @dev:            Pointer to a struct drm_device.
 965  * @data:           Pointer to data copied from / to user-space.
 966  * @file_priv:      Pointer to a drm file private structure.
 967  */
 968 int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
 969                                 struct drm_file *file_priv)
 970 {
 971         struct vmw_private *dev_priv = vmw_priv(dev);
 972         union drm_vmw_surface_reference_arg *arg =
 973             (union drm_vmw_surface_reference_arg *)data;
 974         struct drm_vmw_surface_arg *req = &arg->req;
 975         struct drm_vmw_surface_create_req *rep = &arg->rep;
 976         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 977         struct vmw_surface *srf;
 978         struct vmw_user_surface *user_srf;
 979         struct drm_vmw_size __user *user_sizes;
 980         struct ttm_base_object *base;
 981         int ret;
 982
 983         ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
 984                                            req->handle_type, &base);
 985         if (unlikely(ret != 0))
 986                 return ret;
 987
 988         user_srf = container_of(base, struct vmw_user_surface, prime.base);
 989         srf = &user_srf->srf;
 990
 991         rep->flags = srf->flags;
 992         rep->format = srf->format;
 993         memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels));
 994         user_sizes = (struct drm_vmw_size __user *)(unsigned long)
 995             rep->size_addr;
 996
 997         if (user_sizes)
 998                 ret = copy_to_user(user_sizes, &srf->base_size,
 999                                    sizeof(srf->base_size));
1000         if (unlikely(ret != 0)) {
1001                 DRM_ERROR("copy_to_user failed %p %u\n",
1002                           user_sizes, srf->num_sizes);
1003                 ttm_ref_object_base_unref(tfile, base->hash.key, TTM_REF_USAGE);
1004                 ret = -EFAULT;
1005         }
1006
1007         ttm_base_object_unref(&base);
1008
1009         return ret;
1010 }
1011
1012 /**
1013  * vmw_surface_define_encode - Encode a surface_define command.
1014  *
1015  * @srf: Pointer to a struct vmw_surface object.
1016  * @cmd_space: Pointer to memory area in which the commands should be encoded.
1017  */
1018 static int vmw_gb_surface_create(struct vmw_resource *res)
1019 {
1020         struct vmw_private *dev_priv = res->dev_priv;
1021         struct vmw_surface *srf = vmw_res_to_srf(res);
1022         uint32_t cmd_len, cmd_id, submit_len;
1023         int ret;
1024         struct {
1025                 SVGA3dCmdHeader header;
1026                 SVGA3dCmdDefineGBSurface body;
1027         } *cmd;
1028         struct {
1029                 SVGA3dCmdHeader header;
1030                 SVGA3dCmdDefineGBSurface_v2 body;
1031         } *cmd2;
1032
1033         if (likely(res->id != -1))
1034                 return 0;
1035
1036         vmw_fifo_resource_inc(dev_priv);
1037         ret = vmw_resource_alloc_id(res);
1038         if (unlikely(ret != 0)) {
1039                 DRM_ERROR("Failed to allocate a surface id.\n");
1040                 goto out_no_id;
1041         }
1042
1043         if (unlikely(res->id >= VMWGFX_NUM_GB_SURFACE)) {
1044                 ret = -EBUSY;
1045                 goto out_no_fifo;
1046         }
1047
1048         if (srf->array_size > 0) {
1049                 /* has_dx checked on creation time. */
1050                 cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE_V2;
1051                 cmd_len = sizeof(cmd2->body);
1052                 submit_len = sizeof(*cmd2);
1053         } else {
1054                 cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE;
1055                 cmd_len = sizeof(cmd->body);
1056                 submit_len = sizeof(*cmd);
1057         }
1058
1059         cmd = vmw_fifo_reserve(dev_priv, submit_len);
1060         cmd2 = (typeof(cmd2))cmd;
1061         if (unlikely(!cmd)) {
1062                 DRM_ERROR("Failed reserving FIFO space for surface "
1063                           "creation.\n");
1064                 ret = -ENOMEM;
1065                 goto out_no_fifo;
1066         }
1067
1068         if (srf->array_size > 0) {
1069                 cmd2->header.id = cmd_id;
1070                 cmd2->header.size = cmd_len;
1071                 cmd2->body.sid = srf->res.id;
1072                 cmd2->body.surfaceFlags = srf->flags;
1073                 cmd2->body.format = cpu_to_le32(srf->format);
1074                 cmd2->body.numMipLevels = srf->mip_levels[0];
1075                 cmd2->body.multisampleCount = srf->multisample_count;
1076                 cmd2->body.autogenFilter = srf->autogen_filter;
1077                 cmd2->body.size.width = srf->base_size.width;
1078                 cmd2->body.size.height = srf->base_size.height;
1079                 cmd2->body.size.depth = srf->base_size.depth;
1080                 cmd2->body.arraySize = srf->array_size;
1081         } else {
1082                 cmd->header.id = cmd_id;
1083                 cmd->header.size = cmd_len;
1084                 cmd->body.sid = srf->res.id;
1085                 cmd->body.surfaceFlags = srf->flags;
1086                 cmd->body.format = cpu_to_le32(srf->format);
1087                 cmd->body.numMipLevels = srf->mip_levels[0];
1088                 cmd->body.multisampleCount = srf->multisample_count;
1089                 cmd->body.autogenFilter = srf->autogen_filter;
1090                 cmd->body.size.width = srf->base_size.width;
1091                 cmd->body.size.height = srf->base_size.height;
1092                 cmd->body.size.depth = srf->base_size.depth;
1093         }
1094
1095         vmw_fifo_commit(dev_priv, submit_len);
1096
1097         return 0;
1098
1099 out_no_fifo:
1100         vmw_resource_release_id(res);
1101 out_no_id:
1102         vmw_fifo_resource_dec(dev_priv);
1103         return ret;
1104 }
1105
1106
1107 static int vmw_gb_surface_bind(struct vmw_resource *res,
1108                                struct ttm_validate_buffer *val_buf)
1109 {
1110         struct vmw_private *dev_priv = res->dev_priv;
1111         struct {
1112                 SVGA3dCmdHeader header;
1113                 SVGA3dCmdBindGBSurface body;
1114         } *cmd1;
1115         struct {
1116                 SVGA3dCmdHeader header;
1117                 SVGA3dCmdUpdateGBSurface body;
1118         } *cmd2;
1119         uint32_t submit_size;
1120         struct ttm_buffer_object *bo = val_buf->bo;
1121
1122         BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
1123
1124         submit_size = sizeof(*cmd1) + (res->backup_dirty ? sizeof(*cmd2) : 0);
1125
1126         cmd1 = vmw_fifo_reserve(dev_priv, submit_size);
1127         if (unlikely(!cmd1)) {
1128                 DRM_ERROR("Failed reserving FIFO space for surface "
1129                           "binding.\n");
1130                 return -ENOMEM;
1131         }
1132
1133         cmd1->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
1134         cmd1->header.size = sizeof(cmd1->body);
1135         cmd1->body.sid = res->id;
1136         cmd1->body.mobid = bo->mem.start;
1137         if (res->backup_dirty) {
1138                 cmd2 = (void *) &cmd1[1];
1139                 cmd2->header.id = SVGA_3D_CMD_UPDATE_GB_SURFACE;
1140                 cmd2->header.size = sizeof(cmd2->body);
1141                 cmd2->body.sid = res->id;
1142                 res->backup_dirty = false;
1143         }
1144         vmw_fifo_commit(dev_priv, submit_size);
1145
1146         return 0;
1147 }
1148
1149 static int vmw_gb_surface_unbind(struct vmw_resource *res,
1150                                  bool readback,
1151                                  struct ttm_validate_buffer *val_buf)
1152 {
1153         struct vmw_private *dev_priv = res->dev_priv;
1154         struct ttm_buffer_object *bo = val_buf->bo;
1155         struct vmw_fence_obj *fence;
1156
1157         struct {
1158                 SVGA3dCmdHeader header;
1159                 SVGA3dCmdReadbackGBSurface body;
1160         } *cmd1;
1161         struct {
1162                 SVGA3dCmdHeader header;
1163                 SVGA3dCmdInvalidateGBSurface body;
1164         } *cmd2;
1165         struct {
1166                 SVGA3dCmdHeader header;
1167                 SVGA3dCmdBindGBSurface body;
1168         } *cmd3;
1169         uint32_t submit_size;
1170         uint8_t *cmd;
1171
1172
1173         BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
1174
1175         submit_size = sizeof(*cmd3) + (readback ? sizeof(*cmd1) : sizeof(*cmd2));
1176         cmd = vmw_fifo_reserve(dev_priv, submit_size);
1177         if (unlikely(!cmd)) {
1178                 DRM_ERROR("Failed reserving FIFO space for surface "
1179                           "unbinding.\n");
1180                 return -ENOMEM;
1181         }
1182
1183         if (readback) {
1184                 cmd1 = (void *) cmd;
1185                 cmd1->header.id = SVGA_3D_CMD_READBACK_GB_SURFACE;
1186                 cmd1->header.size = sizeof(cmd1->body);
1187                 cmd1->body.sid = res->id;
1188                 cmd3 = (void *) &cmd1[1];
1189         } else {
1190                 cmd2 = (void *) cmd;
1191                 cmd2->header.id = SVGA_3D_CMD_INVALIDATE_GB_SURFACE;
1192                 cmd2->header.size = sizeof(cmd2->body);
1193                 cmd2->body.sid = res->id;
1194                 cmd3 = (void *) &cmd2[1];
1195         }
1196
1197         cmd3->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
1198         cmd3->header.size = sizeof(cmd3->body);
1199         cmd3->body.sid = res->id;
1200         cmd3->body.mobid = SVGA3D_INVALID_ID;
1201
1202         vmw_fifo_commit(dev_priv, submit_size);
1203
1204         /*
1205          * Create a fence object and fence the backup buffer.
1206          */
1207
1208         (void) vmw_execbuf_fence_commands(NULL, dev_priv,
1209                                           &fence, NULL);
1210
1211         vmw_fence_single_bo(val_buf->bo, fence);
1212
1213         if (likely(fence != NULL))
1214                 vmw_fence_obj_unreference(&fence);
1215
1216         return 0;
1217 }
1218
1219 static int vmw_gb_surface_destroy(struct vmw_resource *res)
1220 {
1221         struct vmw_private *dev_priv = res->dev_priv;
1222         struct vmw_surface *srf = vmw_res_to_srf(res);
1223         struct {
1224                 SVGA3dCmdHeader header;
1225                 SVGA3dCmdDestroyGBSurface body;
1226         } *cmd;
1227
1228         if (likely(res->id == -1))
1229                 return 0;
1230
1231         mutex_lock(&dev_priv->binding_mutex);
1232         vmw_view_surface_list_destroy(dev_priv, &srf->view_list);
1233         vmw_binding_res_list_scrub(&res->binding_head);
1234
1235         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
1236         if (unlikely(!cmd)) {
1237                 DRM_ERROR("Failed reserving FIFO space for surface "
1238                           "destruction.\n");
1239                 mutex_unlock(&dev_priv->binding_mutex);
1240                 return -ENOMEM;
1241         }
1242
1243         cmd->header.id = SVGA_3D_CMD_DESTROY_GB_SURFACE;
1244         cmd->header.size = sizeof(cmd->body);
1245         cmd->body.sid = res->id;
1246         vmw_fifo_commit(dev_priv, sizeof(*cmd));
1247         mutex_unlock(&dev_priv->binding_mutex);
1248         vmw_resource_release_id(res);
1249         vmw_fifo_resource_dec(dev_priv);
1250
1251         return 0;
1252 }
1253
1254
1255 /**
1256  * vmw_gb_surface_define_ioctl - Ioctl function implementing
1257  *                               the user surface define functionality.
1258  *
1259  * @dev:            Pointer to a struct drm_device.
1260  * @data:           Pointer to data copied from / to user-space.
1261  * @file_priv:      Pointer to a drm file private structure.
1262  */
1263 int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
1264                                 struct drm_file *file_priv)
1265 {
1266         struct vmw_private *dev_priv = vmw_priv(dev);
1267         struct vmw_user_surface *user_srf;
1268         struct vmw_surface *srf;
1269         struct vmw_resource *res;
1270         struct vmw_resource *tmp;
1271         union drm_vmw_gb_surface_create_arg *arg =
1272             (union drm_vmw_gb_surface_create_arg *)data;
1273         struct drm_vmw_gb_surface_create_req *req = &arg->req;
1274         struct drm_vmw_gb_surface_create_rep *rep = &arg->rep;
1275         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1276         int ret;
1277         uint32_t size;
1278         uint32_t backup_handle = 0;
1279
1280         if (req->multisample_count != 0)
1281                 return -EINVAL;
1282
1283         if (req->mip_levels > DRM_VMW_MAX_MIP_LEVELS)
1284                 return -EINVAL;
1285
1286         if (unlikely(vmw_user_surface_size == 0))
1287                 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
1288                         128;
1289
1290         size = vmw_user_surface_size + 128;
1291
1292         /* Define a surface based on the parameters. */
1293         ret = vmw_surface_gb_priv_define(dev,
1294                         size,
1295                         req->svga3d_flags,
1296                         req->format,
1297                         req->drm_surface_flags & drm_vmw_surface_flag_scanout,
1298                         req->mip_levels,
1299                         req->multisample_count,
1300                         req->array_size,
1301                         req->base_size,
1302                         &srf);
1303         if (unlikely(ret != 0))
1304                 return ret;
1305
1306         user_srf = container_of(srf, struct vmw_user_surface, srf);
1307         if (drm_is_primary_client(file_priv))
1308                 user_srf->master = drm_master_get(file_priv->master);
1309
1310         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
1311         if (unlikely(ret != 0))
1312                 return ret;
1313
1314         res = &user_srf->srf.res;
1315
1316
1317         if (req->buffer_handle != SVGA3D_INVALID_ID) {
1318                 ret = vmw_user_dmabuf_lookup(tfile, req->buffer_handle,
1319                                              &res->backup,
1320                                              &user_srf->backup_base);
1321                 if (ret == 0) {
1322                         if (res->backup->base.num_pages * PAGE_SIZE <
1323                             res->backup_size) {
1324                                 DRM_ERROR("Surface backup buffer is too small.\n");
1325                                 vmw_dmabuf_unreference(&res->backup);
1326                                 ret = -EINVAL;
1327                                 goto out_unlock;
1328                         } else {
1329                                 backup_handle = req->buffer_handle;
1330                         }
1331                 }
1332         } else if (req->drm_surface_flags & drm_vmw_surface_flag_create_buffer)
1333                 ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
1334                                             res->backup_size,
1335                                             req->drm_surface_flags &
1336                                             drm_vmw_surface_flag_shareable,
1337                                             &backup_handle,
1338                                             &res->backup,
1339                                             &user_srf->backup_base);
1340
1341         if (unlikely(ret != 0)) {
1342                 vmw_resource_unreference(&res);
1343                 goto out_unlock;
1344         }
1345
1346         tmp = vmw_resource_reference(res);
1347         ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
1348                                     req->drm_surface_flags &
1349                                     drm_vmw_surface_flag_shareable,
1350                                     VMW_RES_SURFACE,
1351                                     &vmw_user_surface_base_release, NULL);
1352
1353         if (unlikely(ret != 0)) {
1354                 vmw_resource_unreference(&tmp);
1355                 vmw_resource_unreference(&res);
1356                 goto out_unlock;
1357         }
1358
1359         rep->handle      = user_srf->prime.base.hash.key;
1360         rep->backup_size = res->backup_size;
1361         if (res->backup) {
1362                 rep->buffer_map_handle =
1363                         drm_vma_node_offset_addr(&res->backup->base.vma_node);
1364                 rep->buffer_size = res->backup->base.num_pages * PAGE_SIZE;
1365                 rep->buffer_handle = backup_handle;
1366         } else {
1367                 rep->buffer_map_handle = 0;
1368                 rep->buffer_size = 0;
1369                 rep->buffer_handle = SVGA3D_INVALID_ID;
1370         }
1371
1372         vmw_resource_unreference(&res);
1373
1374 out_unlock:
1375         ttm_read_unlock(&dev_priv->reservation_sem);
1376         return ret;
1377 }
1378
1379 /**
1380  * vmw_gb_surface_reference_ioctl - Ioctl function implementing
1381  *                                  the user surface reference functionality.
1382  *
1383  * @dev:            Pointer to a struct drm_device.
1384  * @data:           Pointer to data copied from / to user-space.
1385  * @file_priv:      Pointer to a drm file private structure.
1386  */
1387 int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
1388                                    struct drm_file *file_priv)
1389 {
1390         struct vmw_private *dev_priv = vmw_priv(dev);
1391         union drm_vmw_gb_surface_reference_arg *arg =
1392             (union drm_vmw_gb_surface_reference_arg *)data;
1393         struct drm_vmw_surface_arg *req = &arg->req;
1394         struct drm_vmw_gb_surface_ref_rep *rep = &arg->rep;
1395         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1396         struct vmw_surface *srf;
1397         struct vmw_user_surface *user_srf;
1398         struct ttm_base_object *base;
1399         uint32_t backup_handle;
1400         int ret = -EINVAL;
1401
1402         ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
1403                                            req->handle_type, &base);
1404         if (unlikely(ret != 0))
1405                 return ret;
1406
1407         user_srf = container_of(base, struct vmw_user_surface, prime.base);
1408         srf = &user_srf->srf;
1409         if (!srf->res.backup) {
1410                 DRM_ERROR("Shared GB surface is missing a backup buffer.\n");
1411                 goto out_bad_resource;
1412         }
1413
1414         mutex_lock(&dev_priv->cmdbuf_mutex); /* Protect res->backup */
1415         ret = vmw_user_dmabuf_reference(tfile, srf->res.backup,
1416                                         &backup_handle);
1417         mutex_unlock(&dev_priv->cmdbuf_mutex);
1418
1419         if (unlikely(ret != 0)) {
1420                 DRM_ERROR("Could not add a reference to a GB surface "
1421                           "backup buffer.\n");
1422                 (void) ttm_ref_object_base_unref(tfile, base->hash.key,
1423                                                  TTM_REF_USAGE);
1424                 goto out_bad_resource;
1425         }
1426
1427         rep->creq.svga3d_flags = srf->flags;
1428         rep->creq.format = srf->format;
1429         rep->creq.mip_levels = srf->mip_levels[0];
1430         rep->creq.drm_surface_flags = 0;
1431         rep->creq.multisample_count = srf->multisample_count;
1432         rep->creq.autogen_filter = srf->autogen_filter;
1433         rep->creq.array_size = srf->array_size;
1434         rep->creq.buffer_handle = backup_handle;
1435         rep->creq.base_size = srf->base_size;
1436         rep->crep.handle = user_srf->prime.base.hash.key;
1437         rep->crep.backup_size = srf->res.backup_size;
1438         rep->crep.buffer_handle = backup_handle;
1439         rep->crep.buffer_map_handle =
1440                 drm_vma_node_offset_addr(&srf->res.backup->base.vma_node);
1441         rep->crep.buffer_size = srf->res.backup->base.num_pages * PAGE_SIZE;
1442
1443 out_bad_resource:
1444         ttm_base_object_unref(&base);
1445
1446         return ret;
1447 }
1448
1449 /**
1450  * vmw_surface_gb_priv_define - Define a private GB surface
1451  *
1452  * @dev:  Pointer to a struct drm_device
1453  * @user_accounting_size:  Used to track user-space memory usage, set
1454  *                         to 0 for kernel mode only memory
1455  * @svga3d_flags: SVGA3d surface flags for the device
1456  * @format: requested surface format
1457  * @for_scanout: true if inteded to be used for scanout buffer
1458  * @num_mip_levels:  number of MIP levels
1459  * @multisample_count:
1460  * @array_size: Surface array size.
1461  * @size: width, heigh, depth of the surface requested
1462  * @user_srf_out: allocated user_srf.  Set to NULL on failure.
1463  *
1464  * GB surfaces allocated by this function will not have a user mode handle, and
1465  * thus will only be visible to vmwgfx.  For optimization reasons the
1466  * surface may later be given a user mode handle by another function to make
1467  * it available to user mode drivers.
1468  */
1469 int vmw_surface_gb_priv_define(struct drm_device *dev,
1470                                uint32_t user_accounting_size,
1471                                uint32_t svga3d_flags,
1472                                SVGA3dSurfaceFormat format,
1473                                bool for_scanout,
1474                                uint32_t num_mip_levels,
1475                                uint32_t multisample_count,
1476                                uint32_t array_size,
1477                                struct drm_vmw_size size,
1478                                struct vmw_surface **srf_out)
1479 {
1480         struct vmw_private *dev_priv = vmw_priv(dev);
1481         struct vmw_user_surface *user_srf;
1482         struct vmw_surface *srf;
1483         int ret;
1484         u32 num_layers;
1485
1486         *srf_out = NULL;
1487
1488         if (for_scanout) {
1489                 uint32_t max_width, max_height;
1490
1491                 if (!svga3dsurface_is_screen_target_format(format)) {
1492                         DRM_ERROR("Invalid Screen Target surface format.");
1493                         return -EINVAL;
1494                 }
1495
1496                 max_width = min(dev_priv->texture_max_width,
1497                                 dev_priv->stdu_max_width);
1498                 max_height = min(dev_priv->texture_max_height,
1499                                  dev_priv->stdu_max_height);
1500
1501                 if (size.width > max_width || size.height > max_height) {
1502                         DRM_ERROR("%ux%u\n, exceeds max surface size %ux%u",
1503                                   size.width, size.height,
1504                                   max_width, max_height);
1505                         return -EINVAL;
1506                 }
1507         } else {
1508                 const struct svga3d_surface_desc *desc;
1509
1510                 desc = svga3dsurface_get_desc(format);
1511                 if (unlikely(desc->block_desc == SVGA3DBLOCKDESC_NONE)) {
1512                         DRM_ERROR("Invalid surface format.\n");
1513                         return -EINVAL;
1514                 }
1515         }
1516
1517         /* array_size must be null for non-GL3 host. */
1518         if (array_size > 0 && !dev_priv->has_dx) {
1519                 DRM_ERROR("Tried to create DX surface on non-DX host.\n");
1520                 return -EINVAL;
1521         }
1522
1523         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
1524         if (unlikely(ret != 0))
1525                 return ret;
1526
1527         ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
1528                                    user_accounting_size, false, true);
1529         if (unlikely(ret != 0)) {
1530                 if (ret != -ERESTARTSYS)
1531                         DRM_ERROR("Out of graphics memory for surface"
1532                                   " creation.\n");
1533                 goto out_unlock;
1534         }
1535
1536         user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
1537         if (unlikely(!user_srf)) {
1538                 ret = -ENOMEM;
1539                 goto out_no_user_srf;
1540         }
1541
1542         *srf_out  = &user_srf->srf;
1543         user_srf->size = user_accounting_size;
1544         user_srf->prime.base.shareable = false;
1545         user_srf->prime.base.tfile     = NULL;
1546
1547         srf = &user_srf->srf;
1548         srf->flags             = svga3d_flags;
1549         srf->format            = format;
1550         srf->scanout           = for_scanout;
1551         srf->mip_levels[0]     = num_mip_levels;
1552         srf->num_sizes         = 1;
1553         srf->sizes             = NULL;
1554         srf->offsets           = NULL;
1555         srf->base_size         = size;
1556         srf->autogen_filter    = SVGA3D_TEX_FILTER_NONE;
1557         srf->array_size        = array_size;
1558         srf->multisample_count = multisample_count;
1559
1560         if (array_size)
1561                 num_layers = array_size;
1562         else if (svga3d_flags & SVGA3D_SURFACE_CUBEMAP)
1563                 num_layers = SVGA3D_MAX_SURFACE_FACES;
1564         else
1565                 num_layers = 1;
1566
1567         srf->res.backup_size   =
1568                 svga3dsurface_get_serialized_size(srf->format,
1569                                                   srf->base_size,
1570                                                   srf->mip_levels[0],
1571                                                   num_layers);
1572
1573         if (srf->flags & SVGA3D_SURFACE_BIND_STREAM_OUTPUT)
1574                 srf->res.backup_size += sizeof(SVGA3dDXSOState);
1575
1576         if (dev_priv->active_display_unit == vmw_du_screen_target &&
1577             for_scanout)
1578                 srf->flags |= SVGA3D_SURFACE_SCREENTARGET;
1579
1580         /*
1581          * From this point, the generic resource management functions
1582          * destroy the object on failure.
1583          */
1584         ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
1585
1586         ttm_read_unlock(&dev_priv->reservation_sem);
1587         return ret;
1588
1589 out_no_user_srf:
1590         ttm_mem_global_free(vmw_mem_glob(dev_priv), user_accounting_size);
1591
1592 out_unlock:
1593         ttm_read_unlock(&dev_priv->reservation_sem);
1594         return ret;
1595 }