drivers/gpu/drm/vmwgfx/vmwgfx_kms.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 "vmwgfx_kms.h"
  29
  30 /* Might need a hrtimer here? */
  31 #define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)
  32
  33 void vmw_du_cleanup(struct vmw_display_unit *du)
  34 {
  35         if (du->cursor_surface)
  36                 vmw_surface_unreference(&du->cursor_surface);
  37         if (du->cursor_dmabuf)
  38                 vmw_dmabuf_unreference(&du->cursor_dmabuf);
  39         drm_connector_unregister(&du->connector);
  40         drm_crtc_cleanup(&du->crtc);
  41         drm_encoder_cleanup(&du->encoder);
  42         drm_connector_cleanup(&du->connector);
  43 }
  44
  45 /*
  46  * Display Unit Cursor functions
  47  */
  48
  49 int vmw_cursor_update_image(struct vmw_private *dev_priv,
  50                             u32 *image, u32 width, u32 height,
  51                             u32 hotspotX, u32 hotspotY)
  52 {
  53         struct {
  54                 u32 cmd;
  55                 SVGAFifoCmdDefineAlphaCursor cursor;
  56         } *cmd;
  57         u32 image_size = width * height * 4;
  58         u32 cmd_size = sizeof(*cmd) + image_size;
  59
  60         if (!image)
  61                 return -EINVAL;
  62
  63         cmd = vmw_fifo_reserve(dev_priv, cmd_size);
  64         if (unlikely(cmd == NULL)) {
  65                 DRM_ERROR("Fifo reserve failed.\n");
  66                 return -ENOMEM;
  67         }
  68
  69         memset(cmd, 0, sizeof(*cmd));
  70
  71         memcpy(&cmd[1], image, image_size);
  72
  73         cmd->cmd = SVGA_CMD_DEFINE_ALPHA_CURSOR;
  74         cmd->cursor.id = 0;
  75         cmd->cursor.width = width;
  76         cmd->cursor.height = height;
  77         cmd->cursor.hotspotX = hotspotX;
  78         cmd->cursor.hotspotY = hotspotY;
  79
  80         vmw_fifo_commit_flush(dev_priv, cmd_size);
  81
  82         return 0;
  83 }
  84
  85 int vmw_cursor_update_dmabuf(struct vmw_private *dev_priv,
  86                              struct vmw_dma_buffer *dmabuf,
  87                              u32 width, u32 height,
  88                              u32 hotspotX, u32 hotspotY)
  89 {
  90         struct ttm_bo_kmap_obj map;
  91         unsigned long kmap_offset;
  92         unsigned long kmap_num;
  93         void *virtual;
  94         bool dummy;
  95         int ret;
  96
  97         kmap_offset = 0;
  98         kmap_num = (width*height*4 + PAGE_SIZE - 1) >> PAGE_SHIFT;
  99
 100         ret = ttm_bo_reserve(&dmabuf->base, true, false, false, NULL);
 101         if (unlikely(ret != 0)) {
 102                 DRM_ERROR("reserve failed\n");
 103                 return -EINVAL;
 104         }
 105
 106         ret = ttm_bo_kmap(&dmabuf->base, kmap_offset, kmap_num, &map);
 107         if (unlikely(ret != 0))
 108                 goto err_unreserve;
 109
 110         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 111         ret = vmw_cursor_update_image(dev_priv, virtual, width, height,
 112                                       hotspotX, hotspotY);
 113
 114         ttm_bo_kunmap(&map);
 115 err_unreserve:
 116         ttm_bo_unreserve(&dmabuf->base);
 117
 118         return ret;
 119 }
 120
 121
 122 void vmw_cursor_update_position(struct vmw_private *dev_priv,
 123                                 bool show, int x, int y)
 124 {
 125         u32 *fifo_mem = dev_priv->mmio_virt;
 126         uint32_t count;
 127
 128         vmw_mmio_write(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
 129         vmw_mmio_write(x, fifo_mem + SVGA_FIFO_CURSOR_X);
 130         vmw_mmio_write(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
 131         count = vmw_mmio_read(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 132         vmw_mmio_write(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 133 }
 134
 135
 136 /*
 137  * vmw_du_crtc_cursor_set2 - Driver cursor_set2 callback.
 138  */
 139 int vmw_du_crtc_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
 140                             uint32_t handle, uint32_t width, uint32_t height,
 141                             int32_t hot_x, int32_t hot_y)
 142 {
 143         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 144         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 145         struct vmw_surface *surface = NULL;
 146         struct vmw_dma_buffer *dmabuf = NULL;
 147         s32 hotspot_x, hotspot_y;
 148         int ret;
 149
 150         /*
 151          * FIXME: Unclear whether there's any global state touched by the
 152          * cursor_set function, especially vmw_cursor_update_position looks
 153          * suspicious. For now take the easy route and reacquire all locks. We
 154          * can do this since the caller in the drm core doesn't check anything
 155          * which is protected by any looks.
 156          */
 157         drm_modeset_unlock_crtc(crtc);
 158         drm_modeset_lock_all(dev_priv->dev);
 159         hotspot_x = hot_x + du->hotspot_x;
 160         hotspot_y = hot_y + du->hotspot_y;
 161
 162         /* A lot of the code assumes this */
 163         if (handle && (width != 64 || height != 64)) {
 164                 ret = -EINVAL;
 165                 goto out;
 166         }
 167
 168         if (handle) {
 169                 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 170
 171                 ret = vmw_user_lookup_handle(dev_priv, tfile,
 172                                              handle, &surface, &dmabuf);
 173                 if (ret) {
 174                         DRM_ERROR("failed to find surface or dmabuf: %i\n", ret);
 175                         ret = -EINVAL;
 176                         goto out;
 177                 }
 178         }
 179
 180         /* need to do this before taking down old image */
 181         if (surface && !surface->snooper.image) {
 182                 DRM_ERROR("surface not suitable for cursor\n");
 183                 vmw_surface_unreference(&surface);
 184                 ret = -EINVAL;
 185                 goto out;
 186         }
 187
 188         /* takedown old cursor */
 189         if (du->cursor_surface) {
 190                 du->cursor_surface->snooper.crtc = NULL;
 191                 vmw_surface_unreference(&du->cursor_surface);
 192         }
 193         if (du->cursor_dmabuf)
 194                 vmw_dmabuf_unreference(&du->cursor_dmabuf);
 195
 196         /* setup new image */
 197         ret = 0;
 198         if (surface) {
 199                 /* vmw_user_surface_lookup takes one reference */
 200                 du->cursor_surface = surface;
 201
 202                 du->cursor_surface->snooper.crtc = crtc;
 203                 du->cursor_age = du->cursor_surface->snooper.age;
 204                 ret = vmw_cursor_update_image(dev_priv, surface->snooper.image,
 205                                               64, 64, hotspot_x, hotspot_y);
 206         } else if (dmabuf) {
 207                 /* vmw_user_surface_lookup takes one reference */
 208                 du->cursor_dmabuf = dmabuf;
 209
 210                 ret = vmw_cursor_update_dmabuf(dev_priv, dmabuf, width, height,
 211                                                hotspot_x, hotspot_y);
 212         } else {
 213                 vmw_cursor_update_position(dev_priv, false, 0, 0);
 214                 goto out;
 215         }
 216
 217         if (!ret) {
 218                 vmw_cursor_update_position(dev_priv, true,
 219                                            du->cursor_x + hotspot_x,
 220                                            du->cursor_y + hotspot_y);
 221                 du->core_hotspot_x = hot_x;
 222                 du->core_hotspot_y = hot_y;
 223         }
 224
 225 out:
 226         drm_modeset_unlock_all(dev_priv->dev);
 227         drm_modeset_lock_crtc(crtc, crtc->cursor);
 228
 229         return ret;
 230 }
 231
 232 int vmw_du_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
 233 {
 234         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 235         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 236         bool shown = du->cursor_surface || du->cursor_dmabuf ? true : false;
 237
 238         du->cursor_x = x + crtc->x;
 239         du->cursor_y = y + crtc->y;
 240
 241         /*
 242          * FIXME: Unclear whether there's any global state touched by the
 243          * cursor_set function, especially vmw_cursor_update_position looks
 244          * suspicious. For now take the easy route and reacquire all locks. We
 245          * can do this since the caller in the drm core doesn't check anything
 246          * which is protected by any looks.
 247          */
 248         drm_modeset_unlock_crtc(crtc);
 249         drm_modeset_lock_all(dev_priv->dev);
 250
 251         vmw_cursor_update_position(dev_priv, shown,
 252                                    du->cursor_x + du->hotspot_x +
 253                                    du->core_hotspot_x,
 254                                    du->cursor_y + du->hotspot_y +
 255                                    du->core_hotspot_y);
 256
 257         drm_modeset_unlock_all(dev_priv->dev);
 258         drm_modeset_lock_crtc(crtc, crtc->cursor);
 259
 260         return 0;
 261 }
 262
 263 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
 264                           struct ttm_object_file *tfile,
 265                           struct ttm_buffer_object *bo,
 266                           SVGA3dCmdHeader *header)
 267 {
 268         struct ttm_bo_kmap_obj map;
 269         unsigned long kmap_offset;
 270         unsigned long kmap_num;
 271         SVGA3dCopyBox *box;
 272         unsigned box_count;
 273         void *virtual;
 274         bool dummy;
 275         struct vmw_dma_cmd {
 276                 SVGA3dCmdHeader header;
 277                 SVGA3dCmdSurfaceDMA dma;
 278         } *cmd;
 279         int i, ret;
 280
 281         cmd = container_of(header, struct vmw_dma_cmd, header);
 282
 283         /* No snooper installed */
 284         if (!srf->snooper.image)
 285                 return;
 286
 287         if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
 288                 DRM_ERROR("face and mipmap for cursors should never != 0\n");
 289                 return;
 290         }
 291
 292         if (cmd->header.size < 64) {
 293                 DRM_ERROR("at least one full copy box must be given\n");
 294                 return;
 295         }
 296
 297         box = (SVGA3dCopyBox *)&cmd[1];
 298         box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
 299                         sizeof(SVGA3dCopyBox);
 300
 301         if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
 302             box->x != 0    || box->y != 0    || box->z != 0    ||
 303             box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
 304             box->d != 1    || box_count != 1) {
 305                 /* TODO handle none page aligned offsets */
 306                 /* TODO handle more dst & src != 0 */
 307                 /* TODO handle more then one copy */
 308                 DRM_ERROR("Cant snoop dma request for cursor!\n");
 309                 DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
 310                           box->srcx, box->srcy, box->srcz,
 311                           box->x, box->y, box->z,
 312                           box->w, box->h, box->d, box_count,
 313                           cmd->dma.guest.ptr.offset);
 314                 return;
 315         }
 316
 317         kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
 318         kmap_num = (64*64*4) >> PAGE_SHIFT;
 319
 320         ret = ttm_bo_reserve(bo, true, false, false, NULL);
 321         if (unlikely(ret != 0)) {
 322                 DRM_ERROR("reserve failed\n");
 323                 return;
 324         }
 325
 326         ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
 327         if (unlikely(ret != 0))
 328                 goto err_unreserve;
 329
 330         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 331
 332         if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
 333                 memcpy(srf->snooper.image, virtual, 64*64*4);
 334         } else {
 335                 /* Image is unsigned pointer. */
 336                 for (i = 0; i < box->h; i++)
 337                         memcpy(srf->snooper.image + i * 64,
 338                                virtual + i * cmd->dma.guest.pitch,
 339                                box->w * 4);
 340         }
 341
 342         srf->snooper.age++;
 343
 344         ttm_bo_kunmap(&map);
 345 err_unreserve:
 346         ttm_bo_unreserve(bo);
 347 }
 348
 349 /**
 350  * vmw_kms_legacy_hotspot_clear - Clear legacy hotspots
 351  *
 352  * @dev_priv: Pointer to the device private struct.
 353  *
 354  * Clears all legacy hotspots.
 355  */
 356 void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv)
 357 {
 358         struct drm_device *dev = dev_priv->dev;
 359         struct vmw_display_unit *du;
 360         struct drm_crtc *crtc;
 361
 362         drm_modeset_lock_all(dev);
 363         drm_for_each_crtc(crtc, dev) {
 364                 du = vmw_crtc_to_du(crtc);
 365
 366                 du->hotspot_x = 0;
 367                 du->hotspot_y = 0;
 368         }
 369         drm_modeset_unlock_all(dev);
 370 }
 371
 372 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
 373 {
 374         struct drm_device *dev = dev_priv->dev;
 375         struct vmw_display_unit *du;
 376         struct drm_crtc *crtc;
 377
 378         mutex_lock(&dev->mode_config.mutex);
 379
 380         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 381                 du = vmw_crtc_to_du(crtc);
 382                 if (!du->cursor_surface ||
 383                     du->cursor_age == du->cursor_surface->snooper.age)
 384                         continue;
 385
 386                 du->cursor_age = du->cursor_surface->snooper.age;
 387                 vmw_cursor_update_image(dev_priv,
 388                                         du->cursor_surface->snooper.image,
 389                                         64, 64,
 390                                         du->hotspot_x + du->core_hotspot_x,
 391                                         du->hotspot_y + du->core_hotspot_y);
 392         }
 393
 394         mutex_unlock(&dev->mode_config.mutex);
 395 }
 396
 397 /*
 398  * Generic framebuffer code
 399  */
 400
 401 /*
 402  * Surface framebuffer code
 403  */
 404
 405 static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
 406 {
 407         struct vmw_framebuffer_surface *vfbs =
 408                 vmw_framebuffer_to_vfbs(framebuffer);
 409
 410         drm_framebuffer_cleanup(framebuffer);
 411         vmw_surface_unreference(&vfbs->surface);
 412         if (vfbs->base.user_obj)
 413                 ttm_base_object_unref(&vfbs->base.user_obj);
 414
 415         kfree(vfbs);
 416 }
 417
 418 static int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
 419                                   struct drm_file *file_priv,
 420                                   unsigned flags, unsigned color,
 421                                   struct drm_clip_rect *clips,
 422                                   unsigned num_clips)
 423 {
 424         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 425         struct vmw_framebuffer_surface *vfbs =
 426                 vmw_framebuffer_to_vfbs(framebuffer);
 427         struct drm_clip_rect norect;
 428         int ret, inc = 1;
 429
 430         /* Legacy Display Unit does not support 3D */
 431         if (dev_priv->active_display_unit == vmw_du_legacy)
 432                 return -EINVAL;
 433
 434         drm_modeset_lock_all(dev_priv->dev);
 435
 436         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 437         if (unlikely(ret != 0)) {
 438                 drm_modeset_unlock_all(dev_priv->dev);
 439                 return ret;
 440         }
 441
 442         if (!num_clips) {
 443                 num_clips = 1;
 444                 clips = &norect;
 445                 norect.x1 = norect.y1 = 0;
 446                 norect.x2 = framebuffer->width;
 447                 norect.y2 = framebuffer->height;
 448         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 449                 num_clips /= 2;
 450                 inc = 2; /* skip source rects */
 451         }
 452
 453         if (dev_priv->active_display_unit == vmw_du_screen_object)
 454                 ret = vmw_kms_sou_do_surface_dirty(dev_priv, &vfbs->base,
 455                                                    clips, NULL, NULL, 0, 0,
 456                                                    num_clips, inc, NULL);
 457         else
 458                 ret = vmw_kms_stdu_surface_dirty(dev_priv, &vfbs->base,
 459                                                  clips, NULL, NULL, 0, 0,
 460                                                  num_clips, inc, NULL);
 461
 462         vmw_fifo_flush(dev_priv, false);
 463         ttm_read_unlock(&dev_priv->reservation_sem);
 464
 465         drm_modeset_unlock_all(dev_priv->dev);
 466
 467         return 0;
 468 }
 469
 470 /**
 471  * vmw_kms_readback - Perform a readback from the screen system to
 472  * a dma-buffer backed framebuffer.
 473  *
 474  * @dev_priv: Pointer to the device private structure.
 475  * @file_priv: Pointer to a struct drm_file identifying the caller.
 476  * Must be set to NULL if @user_fence_rep is NULL.
 477  * @vfb: Pointer to the dma-buffer backed framebuffer.
 478  * @user_fence_rep: User-space provided structure for fence information.
 479  * Must be set to non-NULL if @file_priv is non-NULL.
 480  * @vclips: Array of clip rects.
 481  * @num_clips: Number of clip rects in @vclips.
 482  *
 483  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 484  * interrupted.
 485  */
 486 int vmw_kms_readback(struct vmw_private *dev_priv,
 487                      struct drm_file *file_priv,
 488                      struct vmw_framebuffer *vfb,
 489                      struct drm_vmw_fence_rep __user *user_fence_rep,
 490                      struct drm_vmw_rect *vclips,
 491                      uint32_t num_clips)
 492 {
 493         switch (dev_priv->active_display_unit) {
 494         case vmw_du_screen_object:
 495                 return vmw_kms_sou_readback(dev_priv, file_priv, vfb,
 496                                             user_fence_rep, vclips, num_clips);
 497         case vmw_du_screen_target:
 498                 return vmw_kms_stdu_dma(dev_priv, file_priv, vfb,
 499                                         user_fence_rep, NULL, vclips, num_clips,
 500                                         1, false, true);
 501         default:
 502                 WARN_ONCE(true,
 503                           "Readback called with invalid display system.\n");
 504 }
 505
 506         return -ENOSYS;
 507 }
 508
 509
 510 static struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
 511         .destroy = vmw_framebuffer_surface_destroy,
 512         .dirty = vmw_framebuffer_surface_dirty,
 513 };
 514
 515 static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
 516                                            struct vmw_surface *surface,
 517                                            struct vmw_framebuffer **out,
 518                                            const struct drm_mode_fb_cmd
 519                                            *mode_cmd,
 520                                            bool is_dmabuf_proxy)
 521
 522 {
 523         struct drm_device *dev = dev_priv->dev;
 524         struct vmw_framebuffer_surface *vfbs;
 525         enum SVGA3dSurfaceFormat format;
 526         int ret;
 527
 528         /* 3D is only supported on HWv8 and newer hosts */
 529         if (dev_priv->active_display_unit == vmw_du_legacy)
 530                 return -ENOSYS;
 531
 532         /*
 533          * Sanity checks.
 534          */
 535
 536         /* Surface must be marked as a scanout. */
 537         if (unlikely(!surface->scanout))
 538                 return -EINVAL;
 539
 540         if (unlikely(surface->mip_levels[0] != 1 ||
 541                      surface->num_sizes != 1 ||
 542                      surface->base_size.width < mode_cmd->width ||
 543                      surface->base_size.height < mode_cmd->height ||
 544                      surface->base_size.depth != 1)) {
 545                 DRM_ERROR("Incompatible surface dimensions "
 546                           "for requested mode.\n");
 547                 return -EINVAL;
 548         }
 549
 550         switch (mode_cmd->depth) {
 551         case 32:
 552                 format = SVGA3D_A8R8G8B8;
 553                 break;
 554         case 24:
 555                 format = SVGA3D_X8R8G8B8;
 556                 break;
 557         case 16:
 558                 format = SVGA3D_R5G6B5;
 559                 break;
 560         case 15:
 561                 format = SVGA3D_A1R5G5B5;
 562                 break;
 563         default:
 564                 DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 565                 return -EINVAL;
 566         }
 567
 568         /*
 569          * For DX, surface format validation is done when surface->scanout
 570          * is set.
 571          */
 572         if (!dev_priv->has_dx && format != surface->format) {
 573                 DRM_ERROR("Invalid surface format for requested mode.\n");
 574                 return -EINVAL;
 575         }
 576
 577         vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
 578         if (!vfbs) {
 579                 ret = -ENOMEM;
 580                 goto out_err1;
 581         }
 582
 583         /* XXX get the first 3 from the surface info */
 584         vfbs->base.base.bits_per_pixel = mode_cmd->bpp;
 585         vfbs->base.base.pitches[0] = mode_cmd->pitch;
 586         vfbs->base.base.depth = mode_cmd->depth;
 587         vfbs->base.base.width = mode_cmd->width;
 588         vfbs->base.base.height = mode_cmd->height;
 589         vfbs->surface = vmw_surface_reference(surface);
 590         vfbs->base.user_handle = mode_cmd->handle;
 591         vfbs->is_dmabuf_proxy = is_dmabuf_proxy;
 592
 593         *out = &vfbs->base;
 594
 595         ret = drm_framebuffer_init(dev, &vfbs->base.base,
 596                                    &vmw_framebuffer_surface_funcs);
 597         if (ret)
 598                 goto out_err2;
 599
 600         return 0;
 601
 602 out_err2:
 603         vmw_surface_unreference(&surface);
 604         kfree(vfbs);
 605 out_err1:
 606         return ret;
 607 }
 608
 609 /*
 610  * Dmabuf framebuffer code
 611  */
 612
 613 static void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
 614 {
 615         struct vmw_framebuffer_dmabuf *vfbd =
 616                 vmw_framebuffer_to_vfbd(framebuffer);
 617
 618         drm_framebuffer_cleanup(framebuffer);
 619         vmw_dmabuf_unreference(&vfbd->buffer);
 620         if (vfbd->base.user_obj)
 621                 ttm_base_object_unref(&vfbd->base.user_obj);
 622
 623         kfree(vfbd);
 624 }
 625
 626 static int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
 627                                  struct drm_file *file_priv,
 628                                  unsigned flags, unsigned color,
 629                                  struct drm_clip_rect *clips,
 630                                  unsigned num_clips)
 631 {
 632         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 633         struct vmw_framebuffer_dmabuf *vfbd =
 634                 vmw_framebuffer_to_vfbd(framebuffer);
 635         struct drm_clip_rect norect;
 636         int ret, increment = 1;
 637
 638         drm_modeset_lock_all(dev_priv->dev);
 639
 640         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 641         if (unlikely(ret != 0)) {
 642                 drm_modeset_unlock_all(dev_priv->dev);
 643                 return ret;
 644         }
 645
 646         if (!num_clips) {
 647                 num_clips = 1;
 648                 clips = &norect;
 649                 norect.x1 = norect.y1 = 0;
 650                 norect.x2 = framebuffer->width;
 651                 norect.y2 = framebuffer->height;
 652         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 653                 num_clips /= 2;
 654                 increment = 2;
 655         }
 656
 657         switch (dev_priv->active_display_unit) {
 658         case vmw_du_screen_target:
 659                 ret = vmw_kms_stdu_dma(dev_priv, NULL, &vfbd->base, NULL,
 660                                        clips, NULL, num_clips, increment,
 661                                        true, true);
 662                 break;
 663         case vmw_du_screen_object:
 664                 ret = vmw_kms_sou_do_dmabuf_dirty(dev_priv, &vfbd->base,
 665                                                   clips, num_clips, increment,
 666                                                   true,
 667                                                   NULL);
 668                 break;
 669         case vmw_du_legacy:
 670                 ret = vmw_kms_ldu_do_dmabuf_dirty(dev_priv, &vfbd->base, 0, 0,
 671                                                   clips, num_clips, increment);
 672                 break;
 673         default:
 674                 ret = -EINVAL;
 675                 WARN_ONCE(true, "Dirty called with invalid display system.\n");
 676                 break;
 677         }
 678
 679         vmw_fifo_flush(dev_priv, false);
 680         ttm_read_unlock(&dev_priv->reservation_sem);
 681
 682         drm_modeset_unlock_all(dev_priv->dev);
 683
 684         return ret;
 685 }
 686
 687 static struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
 688         .destroy = vmw_framebuffer_dmabuf_destroy,
 689         .dirty = vmw_framebuffer_dmabuf_dirty,
 690 };
 691
 692 /**
 693  * Pin the dmabuffer to the start of vram.
 694  */
 695 static int vmw_framebuffer_pin(struct vmw_framebuffer *vfb)
 696 {
 697         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 698         struct vmw_dma_buffer *buf;
 699         int ret;
 700
 701         buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
 702                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
 703
 704         if (!buf)
 705                 return 0;
 706
 707         switch (dev_priv->active_display_unit) {
 708         case vmw_du_legacy:
 709                 vmw_overlay_pause_all(dev_priv);
 710                 ret = vmw_dmabuf_pin_in_start_of_vram(dev_priv, buf, false);
 711                 vmw_overlay_resume_all(dev_priv);
 712                 break;
 713         case vmw_du_screen_object:
 714         case vmw_du_screen_target:
 715                 if (vfb->dmabuf)
 716                         return vmw_dmabuf_pin_in_vram_or_gmr(dev_priv, buf,
 717                                                              false);
 718
 719                 return vmw_dmabuf_pin_in_placement(dev_priv, buf,
 720                                                    &vmw_mob_placement, false);
 721         default:
 722                 return -EINVAL;
 723         }
 724
 725         return ret;
 726 }
 727
 728 static int vmw_framebuffer_unpin(struct vmw_framebuffer *vfb)
 729 {
 730         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 731         struct vmw_dma_buffer *buf;
 732
 733         buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
 734                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
 735
 736         if (WARN_ON(!buf))
 737                 return 0;
 738
 739         return vmw_dmabuf_unpin(dev_priv, buf, false);
 740 }
 741
 742 /**
 743  * vmw_create_dmabuf_proxy - create a proxy surface for the DMA buf
 744  *
 745  * @dev: DRM device
 746  * @mode_cmd: parameters for the new surface
 747  * @dmabuf_mob: MOB backing the DMA buf
 748  * @srf_out: newly created surface
 749  *
 750  * When the content FB is a DMA buf, we create a surface as a proxy to the
 751  * same buffer.  This way we can do a surface copy rather than a surface DMA.
 752  * This is a more efficient approach
 753  *
 754  * RETURNS:
 755  * 0 on success, error code otherwise
 756  */
 757 static int vmw_create_dmabuf_proxy(struct drm_device *dev,
 758                                    const struct drm_mode_fb_cmd *mode_cmd,
 759                                    struct vmw_dma_buffer *dmabuf_mob,
 760                                    struct vmw_surface **srf_out)
 761 {
 762         uint32_t format;
 763         struct drm_vmw_size content_base_size;
 764         struct vmw_resource *res;
 765         unsigned int bytes_pp;
 766         int ret;
 767
 768         switch (mode_cmd->depth) {
 769         case 32:
 770         case 24:
 771                 format = SVGA3D_X8R8G8B8;
 772                 bytes_pp = 4;
 773                 break;
 774
 775         case 16:
 776         case 15:
 777                 format = SVGA3D_R5G6B5;
 778                 bytes_pp = 2;
 779                 break;
 780
 781         case 8:
 782                 format = SVGA3D_P8;
 783                 bytes_pp = 1;
 784                 break;
 785
 786         default:
 787                 DRM_ERROR("Invalid framebuffer format %d\n", mode_cmd->depth);
 788                 return -EINVAL;
 789         }
 790
 791         content_base_size.width  = mode_cmd->pitch / bytes_pp;
 792         content_base_size.height = mode_cmd->height;
 793         content_base_size.depth  = 1;
 794
 795         ret = vmw_surface_gb_priv_define(dev,
 796                         0, /* kernel visible only */
 797                         0, /* flags */
 798                         format,
 799                         true, /* can be a scanout buffer */
 800                         1, /* num of mip levels */
 801                         0,
 802                         0,
 803                         content_base_size,
 804                         srf_out);
 805         if (ret) {
 806                 DRM_ERROR("Failed to allocate proxy content buffer\n");
 807                 return ret;
 808         }
 809
 810         res = &(*srf_out)->res;
 811
 812         /* Reserve and switch the backing mob. */
 813         mutex_lock(&res->dev_priv->cmdbuf_mutex);
 814         (void) vmw_resource_reserve(res, false, true);
 815         vmw_dmabuf_unreference(&res->backup);
 816         res->backup = vmw_dmabuf_reference(dmabuf_mob);
 817         res->backup_offset = 0;
 818         vmw_resource_unreserve(res, false, NULL, 0);
 819         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
 820
 821         return 0;
 822 }
 823
 824
 825
 826 static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
 827                                           struct vmw_dma_buffer *dmabuf,
 828                                           struct vmw_framebuffer **out,
 829                                           const struct drm_mode_fb_cmd
 830                                           *mode_cmd)
 831
 832 {
 833         struct drm_device *dev = dev_priv->dev;
 834         struct vmw_framebuffer_dmabuf *vfbd;
 835         unsigned int requested_size;
 836         int ret;
 837
 838         requested_size = mode_cmd->height * mode_cmd->pitch;
 839         if (unlikely(requested_size > dmabuf->base.num_pages * PAGE_SIZE)) {
 840                 DRM_ERROR("Screen buffer object size is too small "
 841                           "for requested mode.\n");
 842                 return -EINVAL;
 843         }
 844
 845         /* Limited framebuffer color depth support for screen objects */
 846         if (dev_priv->active_display_unit == vmw_du_screen_object) {
 847                 switch (mode_cmd->depth) {
 848                 case 32:
 849                 case 24:
 850                         /* Only support 32 bpp for 32 and 24 depth fbs */
 851                         if (mode_cmd->bpp == 32)
 852                                 break;
 853
 854                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 855                                   mode_cmd->depth, mode_cmd->bpp);
 856                         return -EINVAL;
 857                 case 16:
 858                 case 15:
 859                         /* Only support 16 bpp for 16 and 15 depth fbs */
 860                         if (mode_cmd->bpp == 16)
 861                                 break;
 862
 863                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 864                                   mode_cmd->depth, mode_cmd->bpp);
 865                         return -EINVAL;
 866                 default:
 867                         DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 868                         return -EINVAL;
 869                 }
 870         }
 871
 872         vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
 873         if (!vfbd) {
 874                 ret = -ENOMEM;
 875                 goto out_err1;
 876         }
 877
 878         vfbd->base.base.bits_per_pixel = mode_cmd->bpp;
 879         vfbd->base.base.pitches[0] = mode_cmd->pitch;
 880         vfbd->base.base.depth = mode_cmd->depth;
 881         vfbd->base.base.width = mode_cmd->width;
 882         vfbd->base.base.height = mode_cmd->height;
 883         vfbd->base.dmabuf = true;
 884         vfbd->buffer = vmw_dmabuf_reference(dmabuf);
 885         vfbd->base.user_handle = mode_cmd->handle;
 886         *out = &vfbd->base;
 887
 888         ret = drm_framebuffer_init(dev, &vfbd->base.base,
 889                                    &vmw_framebuffer_dmabuf_funcs);
 890         if (ret)
 891                 goto out_err2;
 892
 893         return 0;
 894
 895 out_err2:
 896         vmw_dmabuf_unreference(&dmabuf);
 897         kfree(vfbd);
 898 out_err1:
 899         return ret;
 900 }
 901
 902 /**
 903  * vmw_kms_new_framebuffer - Create a new framebuffer.
 904  *
 905  * @dev_priv: Pointer to device private struct.
 906  * @dmabuf: Pointer to dma buffer to wrap the kms framebuffer around.
 907  * Either @dmabuf or @surface must be NULL.
 908  * @surface: Pointer to a surface to wrap the kms framebuffer around.
 909  * Either @dmabuf or @surface must be NULL.
 910  * @only_2d: No presents will occur to this dma buffer based framebuffer. This
 911  * Helps the code to do some important optimizations.
 912  * @mode_cmd: Frame-buffer metadata.
 913  */
 914 struct vmw_framebuffer *
 915 vmw_kms_new_framebuffer(struct vmw_private *dev_priv,
 916                         struct vmw_dma_buffer *dmabuf,
 917                         struct vmw_surface *surface,
 918                         bool only_2d,
 919                         const struct drm_mode_fb_cmd *mode_cmd)
 920 {
 921         struct vmw_framebuffer *vfb = NULL;
 922         bool is_dmabuf_proxy = false;
 923         int ret;
 924
 925         /*
 926          * We cannot use the SurfaceDMA command in an non-accelerated VM,
 927          * therefore, wrap the DMA buf in a surface so we can use the
 928          * SurfaceCopy command.
 929          */
 930         if (dmabuf && only_2d &&
 931             dev_priv->active_display_unit == vmw_du_screen_target) {
 932                 ret = vmw_create_dmabuf_proxy(dev_priv->dev, mode_cmd,
 933                                               dmabuf, &surface);
 934                 if (ret)
 935                         return ERR_PTR(ret);
 936
 937                 is_dmabuf_proxy = true;
 938         }
 939
 940         /* Create the new framebuffer depending one what we have */
 941         if (surface) {
 942                 ret = vmw_kms_new_framebuffer_surface(dev_priv, surface, &vfb,
 943                                                       mode_cmd,
 944                                                       is_dmabuf_proxy);
 945
 946                 /*
 947                  * vmw_create_dmabuf_proxy() adds a reference that is no longer
 948                  * needed
 949                  */
 950                 if (is_dmabuf_proxy)
 951                         vmw_surface_unreference(&surface);
 952         } else if (dmabuf) {
 953                 ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, dmabuf, &vfb,
 954                                                      mode_cmd);
 955         } else {
 956                 BUG();
 957         }
 958
 959         if (ret)
 960                 return ERR_PTR(ret);
 961
 962         vfb->pin = vmw_framebuffer_pin;
 963         vfb->unpin = vmw_framebuffer_unpin;
 964
 965         return vfb;
 966 }
 967
 968 /*
 969  * Generic Kernel modesetting functions
 970  */
 971
 972 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
 973                                                  struct drm_file *file_priv,
 974                                                  struct drm_mode_fb_cmd2 *mode_cmd2)
 975 {
 976         struct vmw_private *dev_priv = vmw_priv(dev);
 977         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 978         struct vmw_framebuffer *vfb = NULL;
 979         struct vmw_surface *surface = NULL;
 980         struct vmw_dma_buffer *bo = NULL;
 981         struct ttm_base_object *user_obj;
 982         struct drm_mode_fb_cmd mode_cmd;
 983         int ret;
 984
 985         mode_cmd.width = mode_cmd2->width;
 986         mode_cmd.height = mode_cmd2->height;
 987         mode_cmd.pitch = mode_cmd2->pitches[0];
 988         mode_cmd.handle = mode_cmd2->handles[0];
 989         drm_fb_get_bpp_depth(mode_cmd2->pixel_format, &mode_cmd.depth,
 990                                     &mode_cmd.bpp);
 991
 992         /**
 993          * This code should be conditioned on Screen Objects not being used.
 994          * If screen objects are used, we can allocate a GMR to hold the
 995          * requested framebuffer.
 996          */
 997
 998         if (!vmw_kms_validate_mode_vram(dev_priv,
 999                                         mode_cmd.pitch,
1000                                         mode_cmd.height)) {
1001                 DRM_ERROR("Requested mode exceed bounding box limit.\n");
1002                 return ERR_PTR(-ENOMEM);
1003         }
1004
1005         /*
1006          * Take a reference on the user object of the resource
1007          * backing the kms fb. This ensures that user-space handle
1008          * lookups on that resource will always work as long as
1009          * it's registered with a kms framebuffer. This is important,
1010          * since vmw_execbuf_process identifies resources in the
1011          * command stream using user-space handles.
1012          */
1013
1014         user_obj = ttm_base_object_lookup(tfile, mode_cmd.handle);
1015         if (unlikely(user_obj == NULL)) {
1016                 DRM_ERROR("Could not locate requested kms frame buffer.\n");
1017                 return ERR_PTR(-ENOENT);
1018         }
1019
1020         /**
1021          * End conditioned code.
1022          */
1023
1024         /* returns either a dmabuf or surface */
1025         ret = vmw_user_lookup_handle(dev_priv, tfile,
1026                                      mode_cmd.handle,
1027                                      &surface, &bo);
1028         if (ret)
1029                 goto err_out;
1030
1031         vfb = vmw_kms_new_framebuffer(dev_priv, bo, surface,
1032                                       !(dev_priv->capabilities & SVGA_CAP_3D),
1033                                       &mode_cmd);
1034         if (IS_ERR(vfb)) {
1035                 ret = PTR_ERR(vfb);
1036                 goto err_out;
1037         }
1038
1039 err_out:
1040         /* vmw_user_lookup_handle takes one ref so does new_fb */
1041         if (bo)
1042                 vmw_dmabuf_unreference(&bo);
1043         if (surface)
1044                 vmw_surface_unreference(&surface);
1045
1046         if (ret) {
1047                 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1048                 ttm_base_object_unref(&user_obj);
1049                 return ERR_PTR(ret);
1050         } else
1051                 vfb->user_obj = user_obj;
1052
1053         return &vfb->base;
1054 }
1055
1056 static const struct drm_mode_config_funcs vmw_kms_funcs = {
1057         .fb_create = vmw_kms_fb_create,
1058 };
1059
1060 static int vmw_kms_generic_present(struct vmw_private *dev_priv,
1061                                    struct drm_file *file_priv,
1062                                    struct vmw_framebuffer *vfb,
1063                                    struct vmw_surface *surface,
1064                                    uint32_t sid,
1065                                    int32_t destX, int32_t destY,
1066                                    struct drm_vmw_rect *clips,
1067                                    uint32_t num_clips)
1068 {
1069         return vmw_kms_sou_do_surface_dirty(dev_priv, vfb, NULL, clips,
1070                                             &surface->res, destX, destY,
1071                                             num_clips, 1, NULL);
1072 }
1073
1074
1075 int vmw_kms_present(struct vmw_private *dev_priv,
1076                     struct drm_file *file_priv,
1077                     struct vmw_framebuffer *vfb,
1078                     struct vmw_surface *surface,
1079                     uint32_t sid,
1080                     int32_t destX, int32_t destY,
1081                     struct drm_vmw_rect *clips,
1082                     uint32_t num_clips)
1083 {
1084         int ret;
1085
1086         switch (dev_priv->active_display_unit) {
1087         case vmw_du_screen_target:
1088                 ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, clips,
1089                                                  &surface->res, destX, destY,
1090                                                  num_clips, 1, NULL);
1091                 break;
1092         case vmw_du_screen_object:
1093                 ret = vmw_kms_generic_present(dev_priv, file_priv, vfb, surface,
1094                                               sid, destX, destY, clips,
1095                                               num_clips);
1096                 break;
1097         default:
1098                 WARN_ONCE(true,
1099                           "Present called with invalid display system.\n");
1100                 ret = -ENOSYS;
1101                 break;
1102         }
1103         if (ret)
1104                 return ret;
1105
1106         vmw_fifo_flush(dev_priv, false);
1107
1108         return 0;
1109 }
1110
1111 int vmw_kms_init(struct vmw_private *dev_priv)
1112 {
1113         struct drm_device *dev = dev_priv->dev;
1114         int ret;
1115
1116         drm_mode_config_init(dev);
1117         dev->mode_config.funcs = &vmw_kms_funcs;
1118         dev->mode_config.min_width = 1;
1119         dev->mode_config.min_height = 1;
1120         dev->mode_config.max_width = dev_priv->texture_max_width;
1121         dev->mode_config.max_height = dev_priv->texture_max_height;
1122
1123         ret = vmw_kms_stdu_init_display(dev_priv);
1124         if (ret) {
1125                 ret = vmw_kms_sou_init_display(dev_priv);
1126                 if (ret) /* Fallback */
1127                         ret = vmw_kms_ldu_init_display(dev_priv);
1128         }
1129
1130         return ret;
1131 }
1132
1133 int vmw_kms_close(struct vmw_private *dev_priv)
1134 {
1135         int ret;
1136
1137         /*
1138          * Docs says we should take the lock before calling this function
1139          * but since it destroys encoders and our destructor calls
1140          * drm_encoder_cleanup which takes the lock we deadlock.
1141          */
1142         drm_mode_config_cleanup(dev_priv->dev);
1143         if (dev_priv->active_display_unit == vmw_du_screen_object)
1144                 ret = vmw_kms_sou_close_display(dev_priv);
1145         else if (dev_priv->active_display_unit == vmw_du_screen_target)
1146                 ret = vmw_kms_stdu_close_display(dev_priv);
1147         else
1148                 ret = vmw_kms_ldu_close_display(dev_priv);
1149
1150         return ret;
1151 }
1152
1153 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1154                                 struct drm_file *file_priv)
1155 {
1156         struct drm_vmw_cursor_bypass_arg *arg = data;
1157         struct vmw_display_unit *du;
1158         struct drm_crtc *crtc;
1159         int ret = 0;
1160
1161
1162         mutex_lock(&dev->mode_config.mutex);
1163         if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1164
1165                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1166                         du = vmw_crtc_to_du(crtc);
1167                         du->hotspot_x = arg->xhot;
1168                         du->hotspot_y = arg->yhot;
1169                 }
1170
1171                 mutex_unlock(&dev->mode_config.mutex);
1172                 return 0;
1173         }
1174
1175         crtc = drm_crtc_find(dev, arg->crtc_id);
1176         if (!crtc) {
1177                 ret = -ENOENT;
1178                 goto out;
1179         }
1180
1181         du = vmw_crtc_to_du(crtc);
1182
1183         du->hotspot_x = arg->xhot;
1184         du->hotspot_y = arg->yhot;
1185
1186 out:
1187         mutex_unlock(&dev->mode_config.mutex);
1188
1189         return ret;
1190 }
1191
1192 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1193                         unsigned width, unsigned height, unsigned pitch,
1194                         unsigned bpp, unsigned depth)
1195 {
1196         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1197                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1198         else if (vmw_fifo_have_pitchlock(vmw_priv))
1199                 vmw_mmio_write(pitch, vmw_priv->mmio_virt +
1200                                SVGA_FIFO_PITCHLOCK);
1201         vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1202         vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1203         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1204
1205         if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1206                 DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1207                           depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1208                 return -EINVAL;
1209         }
1210
1211         return 0;
1212 }
1213
1214 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1215 {
1216         struct vmw_vga_topology_state *save;
1217         uint32_t i;
1218
1219         vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1220         vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1221         vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1222         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1223                 vmw_priv->vga_pitchlock =
1224                   vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1225         else if (vmw_fifo_have_pitchlock(vmw_priv))
1226                 vmw_priv->vga_pitchlock = vmw_mmio_read(vmw_priv->mmio_virt +
1227                                                         SVGA_FIFO_PITCHLOCK);
1228
1229         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1230                 return 0;
1231
1232         vmw_priv->num_displays = vmw_read(vmw_priv,
1233                                           SVGA_REG_NUM_GUEST_DISPLAYS);
1234
1235         if (vmw_priv->num_displays == 0)
1236                 vmw_priv->num_displays = 1;
1237
1238         for (i = 0; i < vmw_priv->num_displays; ++i) {
1239                 save = &vmw_priv->vga_save[i];
1240                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1241                 save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1242                 save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1243                 save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1244                 save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1245                 save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1246                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1247                 if (i == 0 && vmw_priv->num_displays == 1 &&
1248                     save->width == 0 && save->height == 0) {
1249
1250                         /*
1251                          * It should be fairly safe to assume that these
1252                          * values are uninitialized.
1253                          */
1254
1255                         save->width = vmw_priv->vga_width - save->pos_x;
1256                         save->height = vmw_priv->vga_height - save->pos_y;
1257                 }
1258         }
1259
1260         return 0;
1261 }
1262
1263 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1264 {
1265         struct vmw_vga_topology_state *save;
1266         uint32_t i;
1267
1268         vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1269         vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1270         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1271         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1272                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1273                           vmw_priv->vga_pitchlock);
1274         else if (vmw_fifo_have_pitchlock(vmw_priv))
1275                 vmw_mmio_write(vmw_priv->vga_pitchlock,
1276                                vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1277
1278         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1279                 return 0;
1280
1281         for (i = 0; i < vmw_priv->num_displays; ++i) {
1282                 save = &vmw_priv->vga_save[i];
1283                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1284                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1285                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1286                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1287                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1288                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1289                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1290         }
1291
1292         return 0;
1293 }
1294
1295 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1296                                 uint32_t pitch,
1297                                 uint32_t height)
1298 {
1299         return ((u64) pitch * (u64) height) < (u64)
1300                 ((dev_priv->active_display_unit == vmw_du_screen_target) ?
1301                  dev_priv->prim_bb_mem : dev_priv->vram_size);
1302 }
1303
1304
1305 /**
1306  * Function called by DRM code called with vbl_lock held.
1307  */
1308 u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
1309 {
1310         return 0;
1311 }
1312
1313 /**
1314  * Function called by DRM code called with vbl_lock held.
1315  */
1316 int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe)
1317 {
1318         return -ENOSYS;
1319 }
1320
1321 /**
1322  * Function called by DRM code called with vbl_lock held.
1323  */
1324 void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe)
1325 {
1326 }
1327
1328
1329 /*
1330  * Small shared kms functions.
1331  */
1332
1333 static int vmw_du_update_layout(struct vmw_private *dev_priv, unsigned num,
1334                          struct drm_vmw_rect *rects)
1335 {
1336         struct drm_device *dev = dev_priv->dev;
1337         struct vmw_display_unit *du;
1338         struct drm_connector *con;
1339
1340         mutex_lock(&dev->mode_config.mutex);
1341
1342 #if 0
1343         {
1344                 unsigned int i;
1345
1346                 DRM_INFO("%s: new layout ", __func__);
1347                 for (i = 0; i < num; i++)
1348                         DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
1349                                  rects[i].w, rects[i].h);
1350                 DRM_INFO("\n");
1351         }
1352 #endif
1353
1354         list_for_each_entry(con, &dev->mode_config.connector_list, head) {
1355                 du = vmw_connector_to_du(con);
1356                 if (num > du->unit) {
1357                         du->pref_width = rects[du->unit].w;
1358                         du->pref_height = rects[du->unit].h;
1359                         du->pref_active = true;
1360                         du->gui_x = rects[du->unit].x;
1361                         du->gui_y = rects[du->unit].y;
1362                 } else {
1363                         du->pref_width = 800;
1364                         du->pref_height = 600;
1365                         du->pref_active = false;
1366                 }
1367                 con->status = vmw_du_connector_detect(con, true);
1368         }
1369
1370         mutex_unlock(&dev->mode_config.mutex);
1371
1372         return 0;
1373 }
1374
1375 void vmw_du_crtc_save(struct drm_crtc *crtc)
1376 {
1377 }
1378
1379 void vmw_du_crtc_restore(struct drm_crtc *crtc)
1380 {
1381 }
1382
1383 void vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
1384                            u16 *r, u16 *g, u16 *b,
1385                            uint32_t start, uint32_t size)
1386 {
1387         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
1388         int i;
1389
1390         for (i = 0; i < size; i++) {
1391                 DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
1392                           r[i], g[i], b[i]);
1393                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
1394                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
1395                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
1396         }
1397 }
1398
1399 int vmw_du_connector_dpms(struct drm_connector *connector, int mode)
1400 {
1401         return 0;
1402 }
1403
1404 void vmw_du_connector_save(struct drm_connector *connector)
1405 {
1406 }
1407
1408 void vmw_du_connector_restore(struct drm_connector *connector)
1409 {
1410 }
1411
1412 enum drm_connector_status
1413 vmw_du_connector_detect(struct drm_connector *connector, bool force)
1414 {
1415         uint32_t num_displays;
1416         struct drm_device *dev = connector->dev;
1417         struct vmw_private *dev_priv = vmw_priv(dev);
1418         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1419
1420         num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
1421
1422         return ((vmw_connector_to_du(connector)->unit < num_displays &&
1423                  du->pref_active) ?
1424                 connector_status_connected : connector_status_disconnected);
1425 }
1426
1427 static struct drm_display_mode vmw_kms_connector_builtin[] = {
1428         /* 640x480@60Hz */
1429         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
1430                    752, 800, 0, 480, 489, 492, 525, 0,
1431                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1432         /* 800x600@60Hz */
1433         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
1434                    968, 1056, 0, 600, 601, 605, 628, 0,
1435                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1436         /* 1024x768@60Hz */
1437         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1438                    1184, 1344, 0, 768, 771, 777, 806, 0,
1439                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1440         /* 1152x864@75Hz */
1441         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1442                    1344, 1600, 0, 864, 865, 868, 900, 0,
1443                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1444         /* 1280x768@60Hz */
1445         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
1446                    1472, 1664, 0, 768, 771, 778, 798, 0,
1447                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1448         /* 1280x800@60Hz */
1449         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
1450                    1480, 1680, 0, 800, 803, 809, 831, 0,
1451                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
1452         /* 1280x960@60Hz */
1453         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
1454                    1488, 1800, 0, 960, 961, 964, 1000, 0,
1455                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1456         /* 1280x1024@60Hz */
1457         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
1458                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
1459                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1460         /* 1360x768@60Hz */
1461         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
1462                    1536, 1792, 0, 768, 771, 777, 795, 0,
1463                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1464         /* 1440x1050@60Hz */
1465         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
1466                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
1467                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1468         /* 1440x900@60Hz */
1469         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
1470                    1672, 1904, 0, 900, 903, 909, 934, 0,
1471                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1472         /* 1600x1200@60Hz */
1473         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
1474                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
1475                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1476         /* 1680x1050@60Hz */
1477         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
1478                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
1479                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1480         /* 1792x1344@60Hz */
1481         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
1482                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
1483                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1484         /* 1853x1392@60Hz */
1485         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
1486                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
1487                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1488         /* 1920x1200@60Hz */
1489         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
1490                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
1491                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1492         /* 1920x1440@60Hz */
1493         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
1494                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
1495                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1496         /* 2560x1600@60Hz */
1497         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
1498                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
1499                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1500         /* Terminate */
1501         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
1502 };
1503
1504 /**
1505  * vmw_guess_mode_timing - Provide fake timings for a
1506  * 60Hz vrefresh mode.
1507  *
1508  * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
1509  * members filled in.
1510  */
1511 void vmw_guess_mode_timing(struct drm_display_mode *mode)
1512 {
1513         mode->hsync_start = mode->hdisplay + 50;
1514         mode->hsync_end = mode->hsync_start + 50;
1515         mode->htotal = mode->hsync_end + 50;
1516
1517         mode->vsync_start = mode->vdisplay + 50;
1518         mode->vsync_end = mode->vsync_start + 50;
1519         mode->vtotal = mode->vsync_end + 50;
1520
1521         mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
1522         mode->vrefresh = drm_mode_vrefresh(mode);
1523 }
1524
1525
1526 int vmw_du_connector_fill_modes(struct drm_connector *connector,
1527                                 uint32_t max_width, uint32_t max_height)
1528 {
1529         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1530         struct drm_device *dev = connector->dev;
1531         struct vmw_private *dev_priv = vmw_priv(dev);
1532         struct drm_display_mode *mode = NULL;
1533         struct drm_display_mode *bmode;
1534         struct drm_display_mode prefmode = { DRM_MODE("preferred",
1535                 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
1536                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1537                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
1538         };
1539         int i;
1540         u32 assumed_bpp = 4;
1541
1542         if (dev_priv->assume_16bpp)
1543                 assumed_bpp = 2;
1544
1545         if (dev_priv->active_display_unit == vmw_du_screen_target) {
1546                 max_width  = min(max_width,  dev_priv->stdu_max_width);
1547                 max_height = min(max_height, dev_priv->stdu_max_height);
1548         }
1549
1550         /* Add preferred mode */
1551         mode = drm_mode_duplicate(dev, &prefmode);
1552         if (!mode)
1553                 return 0;
1554         mode->hdisplay = du->pref_width;
1555         mode->vdisplay = du->pref_height;
1556         vmw_guess_mode_timing(mode);
1557
1558         if (vmw_kms_validate_mode_vram(dev_priv,
1559                                         mode->hdisplay * assumed_bpp,
1560                                         mode->vdisplay)) {
1561                 drm_mode_probed_add(connector, mode);
1562         } else {
1563                 drm_mode_destroy(dev, mode);
1564                 mode = NULL;
1565         }
1566
1567         if (du->pref_mode) {
1568                 list_del_init(&du->pref_mode->head);
1569                 drm_mode_destroy(dev, du->pref_mode);
1570         }
1571
1572         /* mode might be null here, this is intended */
1573         du->pref_mode = mode;
1574
1575         for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
1576                 bmode = &vmw_kms_connector_builtin[i];
1577                 if (bmode->hdisplay > max_width ||
1578                     bmode->vdisplay > max_height)
1579                         continue;
1580
1581                 if (!vmw_kms_validate_mode_vram(dev_priv,
1582                                                 bmode->hdisplay * assumed_bpp,
1583                                                 bmode->vdisplay))
1584                         continue;
1585
1586                 mode = drm_mode_duplicate(dev, bmode);
1587                 if (!mode)
1588                         return 0;
1589                 mode->vrefresh = drm_mode_vrefresh(mode);
1590
1591                 drm_mode_probed_add(connector, mode);
1592         }
1593
1594         drm_mode_connector_list_update(connector, true);
1595         /* Move the prefered mode first, help apps pick the right mode. */
1596         drm_mode_sort(&connector->modes);
1597
1598         return 1;
1599 }
1600
1601 int vmw_du_connector_set_property(struct drm_connector *connector,
1602                                   struct drm_property *property,
1603                                   uint64_t val)
1604 {
1605         return 0;
1606 }
1607
1608
1609 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
1610                                 struct drm_file *file_priv)
1611 {
1612         struct vmw_private *dev_priv = vmw_priv(dev);
1613         struct drm_vmw_update_layout_arg *arg =
1614                 (struct drm_vmw_update_layout_arg *)data;
1615         void __user *user_rects;
1616         struct drm_vmw_rect *rects;
1617         unsigned rects_size;
1618         int ret;
1619         int i;
1620         u64 total_pixels = 0;
1621         struct drm_mode_config *mode_config = &dev->mode_config;
1622         struct drm_vmw_rect bounding_box = {0};
1623
1624         if (!arg->num_outputs) {
1625                 struct drm_vmw_rect def_rect = {0, 0, 800, 600};
1626                 vmw_du_update_layout(dev_priv, 1, &def_rect);
1627                 return 0;
1628         }
1629
1630         rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
1631         rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
1632                         GFP_KERNEL);
1633         if (unlikely(!rects))
1634                 return -ENOMEM;
1635
1636         user_rects = (void __user *)(unsigned long)arg->rects;
1637         ret = copy_from_user(rects, user_rects, rects_size);
1638         if (unlikely(ret != 0)) {
1639                 DRM_ERROR("Failed to get rects.\n");
1640                 ret = -EFAULT;
1641                 goto out_free;
1642         }
1643
1644         for (i = 0; i < arg->num_outputs; ++i) {
1645                 if (rects[i].x < 0 ||
1646                     rects[i].y < 0 ||
1647                     rects[i].x + rects[i].w > mode_config->max_width ||
1648                     rects[i].y + rects[i].h > mode_config->max_height) {
1649                         DRM_ERROR("Invalid GUI layout.\n");
1650                         ret = -EINVAL;
1651                         goto out_free;
1652                 }
1653
1654                 /*
1655                  * bounding_box.w and bunding_box.h are used as
1656                  * lower-right coordinates
1657                  */
1658                 if (rects[i].x + rects[i].w > bounding_box.w)
1659                         bounding_box.w = rects[i].x + rects[i].w;
1660
1661                 if (rects[i].y + rects[i].h > bounding_box.h)
1662                         bounding_box.h = rects[i].y + rects[i].h;
1663
1664                 total_pixels += (u64) rects[i].w * (u64) rects[i].h;
1665         }
1666
1667         if (dev_priv->active_display_unit == vmw_du_screen_target) {
1668                 /*
1669                  * For Screen Targets, the limits for a toplogy are:
1670                  *      1. Bounding box (assuming 32bpp) must be < prim_bb_mem
1671                  *      2. Total pixels (assuming 32bpp) must be < prim_bb_mem
1672                  */
1673                 u64 bb_mem    = bounding_box.w * bounding_box.h * 4;
1674                 u64 pixel_mem = total_pixels * 4;
1675
1676                 if (bb_mem > dev_priv->prim_bb_mem) {
1677                         DRM_ERROR("Topology is beyond supported limits.\n");
1678                         ret = -EINVAL;
1679                         goto out_free;
1680                 }
1681
1682                 if (pixel_mem > dev_priv->prim_bb_mem) {
1683                         DRM_ERROR("Combined output size too large\n");
1684                         ret = -EINVAL;
1685                         goto out_free;
1686                 }
1687         }
1688
1689         vmw_du_update_layout(dev_priv, arg->num_outputs, rects);
1690
1691 out_free:
1692         kfree(rects);
1693         return ret;
1694 }
1695
1696 /**
1697  * vmw_kms_helper_dirty - Helper to build commands and perform actions based
1698  * on a set of cliprects and a set of display units.
1699  *
1700  * @dev_priv: Pointer to a device private structure.
1701  * @framebuffer: Pointer to the framebuffer on which to perform the actions.
1702  * @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL.
1703  * Cliprects are given in framebuffer coordinates.
1704  * @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must
1705  * be NULL. Cliprects are given in source coordinates.
1706  * @dest_x: X coordinate offset for the crtc / destination clip rects.
1707  * @dest_y: Y coordinate offset for the crtc / destination clip rects.
1708  * @num_clips: Number of cliprects in the @clips or @vclips array.
1709  * @increment: Integer with which to increment the clip counter when looping.
1710  * Used to skip a predetermined number of clip rects.
1711  * @dirty: Closure structure. See the description of struct vmw_kms_dirty.
1712  */
1713 int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
1714                          struct vmw_framebuffer *framebuffer,
1715                          const struct drm_clip_rect *clips,
1716                          const struct drm_vmw_rect *vclips,
1717                          s32 dest_x, s32 dest_y,
1718                          int num_clips,
1719                          int increment,
1720                          struct vmw_kms_dirty *dirty)
1721 {
1722         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
1723         struct drm_crtc *crtc;
1724         u32 num_units = 0;
1725         u32 i, k;
1726
1727         dirty->dev_priv = dev_priv;
1728
1729         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
1730                 if (crtc->primary->fb != &framebuffer->base)
1731                         continue;
1732                 units[num_units++] = vmw_crtc_to_du(crtc);
1733         }
1734
1735         for (k = 0; k < num_units; k++) {
1736                 struct vmw_display_unit *unit = units[k];
1737                 s32 crtc_x = unit->crtc.x;
1738                 s32 crtc_y = unit->crtc.y;
1739                 s32 crtc_width = unit->crtc.mode.hdisplay;
1740                 s32 crtc_height = unit->crtc.mode.vdisplay;
1741                 const struct drm_clip_rect *clips_ptr = clips;
1742                 const struct drm_vmw_rect *vclips_ptr = vclips;
1743
1744                 dirty->unit = unit;
1745                 if (dirty->fifo_reserve_size > 0) {
1746                         dirty->cmd = vmw_fifo_reserve(dev_priv,
1747                                                       dirty->fifo_reserve_size);
1748                         if (!dirty->cmd) {
1749                                 DRM_ERROR("Couldn't reserve fifo space "
1750                                           "for dirty blits.\n");
1751                                 return -ENOMEM;
1752                         }
1753                         memset(dirty->cmd, 0, dirty->fifo_reserve_size);
1754                 }
1755                 dirty->num_hits = 0;
1756                 for (i = 0; i < num_clips; i++, clips_ptr += increment,
1757                        vclips_ptr += increment) {
1758                         s32 clip_left;
1759                         s32 clip_top;
1760
1761                         /*
1762                          * Select clip array type. Note that integer type
1763                          * in @clips is unsigned short, whereas in @vclips
1764                          * it's 32-bit.
1765                          */
1766                         if (clips) {
1767                                 dirty->fb_x = (s32) clips_ptr->x1;
1768                                 dirty->fb_y = (s32) clips_ptr->y1;
1769                                 dirty->unit_x2 = (s32) clips_ptr->x2 + dest_x -
1770                                         crtc_x;
1771                                 dirty->unit_y2 = (s32) clips_ptr->y2 + dest_y -
1772                                         crtc_y;
1773                         } else {
1774                                 dirty->fb_x = vclips_ptr->x;
1775                                 dirty->fb_y = vclips_ptr->y;
1776                                 dirty->unit_x2 = dirty->fb_x + vclips_ptr->w +
1777                                         dest_x - crtc_x;
1778                                 dirty->unit_y2 = dirty->fb_y + vclips_ptr->h +
1779                                         dest_y - crtc_y;
1780                         }
1781
1782                         dirty->unit_x1 = dirty->fb_x + dest_x - crtc_x;
1783                         dirty->unit_y1 = dirty->fb_y + dest_y - crtc_y;
1784
1785                         /* Skip this clip if it's outside the crtc region */
1786                         if (dirty->unit_x1 >= crtc_width ||
1787                             dirty->unit_y1 >= crtc_height ||
1788                             dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0)
1789                                 continue;
1790
1791                         /* Clip right and bottom to crtc limits */
1792                         dirty->unit_x2 = min_t(s32, dirty->unit_x2,
1793                                                crtc_width);
1794                         dirty->unit_y2 = min_t(s32, dirty->unit_y2,
1795                                                crtc_height);
1796
1797                         /* Clip left and top to crtc limits */
1798                         clip_left = min_t(s32, dirty->unit_x1, 0);
1799                         clip_top = min_t(s32, dirty->unit_y1, 0);
1800                         dirty->unit_x1 -= clip_left;
1801                         dirty->unit_y1 -= clip_top;
1802                         dirty->fb_x -= clip_left;
1803                         dirty->fb_y -= clip_top;
1804
1805                         dirty->clip(dirty);
1806                 }
1807
1808                 dirty->fifo_commit(dirty);
1809         }
1810
1811         return 0;
1812 }
1813
1814 /**
1815  * vmw_kms_helper_buffer_prepare - Reserve and validate a buffer object before
1816  * command submission.
1817  *
1818  * @dev_priv. Pointer to a device private structure.
1819  * @buf: The buffer object
1820  * @interruptible: Whether to perform waits as interruptible.
1821  * @validate_as_mob: Whether the buffer should be validated as a MOB. If false,
1822  * The buffer will be validated as a GMR. Already pinned buffers will not be
1823  * validated.
1824  *
1825  * Returns 0 on success, negative error code on failure, -ERESTARTSYS if
1826  * interrupted by a signal.
1827  */
1828 int vmw_kms_helper_buffer_prepare(struct vmw_private *dev_priv,
1829                                   struct vmw_dma_buffer *buf,
1830                                   bool interruptible,
1831                                   bool validate_as_mob)
1832 {
1833         struct ttm_buffer_object *bo = &buf->base;
1834         int ret;
1835
1836         ttm_bo_reserve(bo, false, false, interruptible, NULL);
1837         ret = vmw_validate_single_buffer(dev_priv, bo, interruptible,
1838                                          validate_as_mob);
1839         if (ret)
1840                 ttm_bo_unreserve(bo);
1841
1842         return ret;
1843 }
1844
1845 /**
1846  * vmw_kms_helper_buffer_revert - Undo the actions of
1847  * vmw_kms_helper_buffer_prepare.
1848  *
1849  * @res: Pointer to the buffer object.
1850  *
1851  * Helper to be used if an error forces the caller to undo the actions of
1852  * vmw_kms_helper_buffer_prepare.
1853  */
1854 void vmw_kms_helper_buffer_revert(struct vmw_dma_buffer *buf)
1855 {
1856         if (buf)
1857                 ttm_bo_unreserve(&buf->base);
1858 }
1859
1860 /**
1861  * vmw_kms_helper_buffer_finish - Unreserve and fence a buffer object after
1862  * kms command submission.
1863  *
1864  * @dev_priv: Pointer to a device private structure.
1865  * @file_priv: Pointer to a struct drm_file representing the caller's
1866  * connection. Must be set to NULL if @user_fence_rep is NULL, and conversely
1867  * if non-NULL, @user_fence_rep must be non-NULL.
1868  * @buf: The buffer object.
1869  * @out_fence:  Optional pointer to a fence pointer. If non-NULL, a
1870  * ref-counted fence pointer is returned here.
1871  * @user_fence_rep: Optional pointer to a user-space provided struct
1872  * drm_vmw_fence_rep. If provided, @file_priv must also be provided and the
1873  * function copies fence data to user-space in a fail-safe manner.
1874  */
1875 void vmw_kms_helper_buffer_finish(struct vmw_private *dev_priv,
1876                                   struct drm_file *file_priv,
1877                                   struct vmw_dma_buffer *buf,
1878                                   struct vmw_fence_obj **out_fence,
1879                                   struct drm_vmw_fence_rep __user *
1880                                   user_fence_rep)
1881 {
1882         struct vmw_fence_obj *fence;
1883         uint32_t handle;
1884         int ret;
1885
1886         ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
1887                                          file_priv ? &handle : NULL);
1888         if (buf)
1889                 vmw_fence_single_bo(&buf->base, fence);
1890         if (file_priv)
1891                 vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
1892                                             ret, user_fence_rep, fence,
1893                                             handle);
1894         if (out_fence)
1895                 *out_fence = fence;
1896         else
1897                 vmw_fence_obj_unreference(&fence);
1898
1899         vmw_kms_helper_buffer_revert(buf);
1900 }
1901
1902
1903 /**
1904  * vmw_kms_helper_resource_revert - Undo the actions of
1905  * vmw_kms_helper_resource_prepare.
1906  *
1907  * @res: Pointer to the resource. Typically a surface.
1908  *
1909  * Helper to be used if an error forces the caller to undo the actions of
1910  * vmw_kms_helper_resource_prepare.
1911  */
1912 void vmw_kms_helper_resource_revert(struct vmw_validation_ctx *ctx)
1913 {
1914         struct vmw_resource *res = ctx->res;
1915
1916         vmw_kms_helper_buffer_revert(ctx->buf);
1917         vmw_dmabuf_unreference(&ctx->buf);
1918         vmw_resource_unreserve(res, false, NULL, 0);
1919         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1920 }
1921
1922 /**
1923  * vmw_kms_helper_resource_prepare - Reserve and validate a resource before
1924  * command submission.
1925  *
1926  * @res: Pointer to the resource. Typically a surface.
1927  * @interruptible: Whether to perform waits as interruptible.
1928  *
1929  * Reserves and validates also the backup buffer if a guest-backed resource.
1930  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
1931  * interrupted by a signal.
1932  */
1933 int vmw_kms_helper_resource_prepare(struct vmw_resource *res,
1934                                     bool interruptible,
1935                                     struct vmw_validation_ctx *ctx)
1936 {
1937         int ret = 0;
1938
1939         ctx->buf = NULL;
1940         ctx->res = res;
1941
1942         if (interruptible)
1943                 ret = mutex_lock_interruptible(&res->dev_priv->cmdbuf_mutex);
1944         else
1945                 mutex_lock(&res->dev_priv->cmdbuf_mutex);
1946
1947         if (unlikely(ret != 0))
1948                 return -ERESTARTSYS;
1949
1950         ret = vmw_resource_reserve(res, interruptible, false);
1951         if (ret)
1952                 goto out_unlock;
1953
1954         if (res->backup) {
1955                 ret = vmw_kms_helper_buffer_prepare(res->dev_priv, res->backup,
1956                                                     interruptible,
1957                                                     res->dev_priv->has_mob);
1958                 if (ret)
1959                         goto out_unreserve;
1960
1961                 ctx->buf = vmw_dmabuf_reference(res->backup);
1962         }
1963         ret = vmw_resource_validate(res);
1964         if (ret)
1965                 goto out_revert;
1966         return 0;
1967
1968 out_revert:
1969         vmw_kms_helper_buffer_revert(ctx->buf);
1970 out_unreserve:
1971         vmw_resource_unreserve(res, false, NULL, 0);
1972 out_unlock:
1973         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1974         return ret;
1975 }
1976
1977 /**
1978  * vmw_kms_helper_resource_finish - Unreserve and fence a resource after
1979  * kms command submission.
1980  *
1981  * @res: Pointer to the resource. Typically a surface.
1982  * @out_fence: Optional pointer to a fence pointer. If non-NULL, a
1983  * ref-counted fence pointer is returned here.
1984  */
1985 void vmw_kms_helper_resource_finish(struct vmw_validation_ctx *ctx,
1986                                     struct vmw_fence_obj **out_fence)
1987 {
1988         struct vmw_resource *res = ctx->res;
1989
1990         if (ctx->buf || out_fence)
1991                 vmw_kms_helper_buffer_finish(res->dev_priv, NULL, ctx->buf,
1992                                              out_fence, NULL);
1993
1994         vmw_dmabuf_unreference(&ctx->buf);
1995         vmw_resource_unreserve(res, false, NULL, 0);
1996         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1997 }
1998
1999 /**
2000  * vmw_kms_update_proxy - Helper function to update a proxy surface from
2001  * its backing MOB.
2002  *
2003  * @res: Pointer to the surface resource
2004  * @clips: Clip rects in framebuffer (surface) space.
2005  * @num_clips: Number of clips in @clips.
2006  * @increment: Integer with which to increment the clip counter when looping.
2007  * Used to skip a predetermined number of clip rects.
2008  *
2009  * This function makes sure the proxy surface is updated from its backing MOB
2010  * using the region given by @clips. The surface resource @res and its backing
2011  * MOB needs to be reserved and validated on call.
2012  */
2013 int vmw_kms_update_proxy(struct vmw_resource *res,
2014                          const struct drm_clip_rect *clips,
2015                          unsigned num_clips,
2016                          int increment)
2017 {
2018         struct vmw_private *dev_priv = res->dev_priv;
2019         struct drm_vmw_size *size = &vmw_res_to_srf(res)->base_size;
2020         struct {
2021                 SVGA3dCmdHeader header;
2022                 SVGA3dCmdUpdateGBImage body;
2023         } *cmd;
2024         SVGA3dBox *box;
2025         size_t copy_size = 0;
2026         int i;
2027
2028         if (!clips)
2029                 return 0;
2030
2031         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) * num_clips);
2032         if (!cmd) {
2033                 DRM_ERROR("Couldn't reserve fifo space for proxy surface "
2034                           "update.\n");
2035                 return -ENOMEM;
2036         }
2037
2038         for (i = 0; i < num_clips; ++i, clips += increment, ++cmd) {
2039                 box = &cmd->body.box;
2040
2041                 cmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
2042                 cmd->header.size = sizeof(cmd->body);
2043                 cmd->body.image.sid = res->id;
2044                 cmd->body.image.face = 0;
2045                 cmd->body.image.mipmap = 0;
2046
2047                 if (clips->x1 > size->width || clips->x2 > size->width ||
2048                     clips->y1 > size->height || clips->y2 > size->height) {
2049                         DRM_ERROR("Invalid clips outsize of framebuffer.\n");
2050                         return -EINVAL;
2051                 }
2052
2053                 box->x = clips->x1;
2054                 box->y = clips->y1;
2055                 box->z = 0;
2056                 box->w = clips->x2 - clips->x1;
2057                 box->h = clips->y2 - clips->y1;
2058                 box->d = 1;
2059
2060                 copy_size += sizeof(*cmd);
2061         }
2062
2063         vmw_fifo_commit(dev_priv, copy_size);
2064
2065         return 0;
2066 }
2067
2068 int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
2069                             unsigned unit,
2070                             u32 max_width,
2071                             u32 max_height,
2072                             struct drm_connector **p_con,
2073                             struct drm_crtc **p_crtc,
2074                             struct drm_display_mode **p_mode)
2075 {
2076         struct drm_connector *con;
2077         struct vmw_display_unit *du;
2078         struct drm_display_mode *mode;
2079         int i = 0;
2080
2081         list_for_each_entry(con, &dev_priv->dev->mode_config.connector_list,
2082                             head) {
2083                 if (i == unit)
2084                         break;
2085
2086                 ++i;
2087         }
2088
2089         if (&con->head == &dev_priv->dev->mode_config.connector_list) {
2090                 DRM_ERROR("Could not find initial display unit.\n");
2091                 return -EINVAL;
2092         }
2093
2094         if (list_empty(&con->modes))
2095                 (void) vmw_du_connector_fill_modes(con, max_width, max_height);
2096
2097         if (list_empty(&con->modes)) {
2098                 DRM_ERROR("Could not find initial display mode.\n");
2099                 return -EINVAL;
2100         }
2101
2102         du = vmw_connector_to_du(con);
2103         *p_con = con;
2104         *p_crtc = &du->crtc;
2105
2106         list_for_each_entry(mode, &con->modes, head) {
2107                 if (mode->type & DRM_MODE_TYPE_PREFERRED)
2108                         break;
2109         }
2110
2111         if (&mode->head == &con->modes) {
2112                 WARN_ONCE(true, "Could not find initial preferred mode.\n");
2113                 *p_mode = list_first_entry(&con->modes,
2114                                            struct drm_display_mode,
2115                                            head);
2116         } else {
2117                 *p_mode = mode;
2118         }
2119
2120         return 0;
2121 }