drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009-2014 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
  31 /* Might need a hrtimer here? */
  32 #define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)
  33
  34 void vmw_du_cleanup(struct vmw_display_unit *du)
  35 {
  36         if (du->cursor_surface)
  37                 vmw_surface_unreference(&du->cursor_surface);
  38         if (du->cursor_dmabuf)
  39                 vmw_dmabuf_unreference(&du->cursor_dmabuf);
  40         drm_connector_unregister(&du->connector);
  41         drm_crtc_cleanup(&du->crtc);
  42         drm_encoder_cleanup(&du->encoder);
  43         drm_connector_cleanup(&du->connector);
  44 }
  45
  46 /*
  47  * Display Unit Cursor functions
  48  */
  49
  50 int vmw_cursor_update_image(struct vmw_private *dev_priv,
  51                             u32 *image, u32 width, u32 height,
  52                             u32 hotspotX, u32 hotspotY)
  53 {
  54         struct {
  55                 u32 cmd;
  56                 SVGAFifoCmdDefineAlphaCursor cursor;
  57         } *cmd;
  58         u32 image_size = width * height * 4;
  59         u32 cmd_size = sizeof(*cmd) + image_size;
  60
  61         if (!image)
  62                 return -EINVAL;
  63
  64         cmd = vmw_fifo_reserve(dev_priv, cmd_size);
  65         if (unlikely(cmd == NULL)) {
  66                 DRM_ERROR("Fifo reserve failed.\n");
  67                 return -ENOMEM;
  68         }
  69
  70         memset(cmd, 0, sizeof(*cmd));
  71
  72         memcpy(&cmd[1], image, image_size);
  73
  74         cmd->cmd = SVGA_CMD_DEFINE_ALPHA_CURSOR;
  75         cmd->cursor.id = 0;
  76         cmd->cursor.width = width;
  77         cmd->cursor.height = height;
  78         cmd->cursor.hotspotX = hotspotX;
  79         cmd->cursor.hotspotY = hotspotY;
  80
  81         vmw_fifo_commit(dev_priv, cmd_size);
  82
  83         return 0;
  84 }
  85
  86 int vmw_cursor_update_dmabuf(struct vmw_private *dev_priv,
  87                              struct vmw_dma_buffer *dmabuf,
  88                              u32 width, u32 height,
  89                              u32 hotspotX, u32 hotspotY)
  90 {
  91         struct ttm_bo_kmap_obj map;
  92         unsigned long kmap_offset;
  93         unsigned long kmap_num;
  94         void *virtual;
  95         bool dummy;
  96         int ret;
  97
  98         kmap_offset = 0;
  99         kmap_num = (width*height*4 + PAGE_SIZE - 1) >> PAGE_SHIFT;
 100
 101         ret = ttm_bo_reserve(&dmabuf->base, true, false, false, NULL);
 102         if (unlikely(ret != 0)) {
 103                 DRM_ERROR("reserve failed\n");
 104                 return -EINVAL;
 105         }
 106
 107         ret = ttm_bo_kmap(&dmabuf->base, kmap_offset, kmap_num, &map);
 108         if (unlikely(ret != 0))
 109                 goto err_unreserve;
 110
 111         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 112         ret = vmw_cursor_update_image(dev_priv, virtual, width, height,
 113                                       hotspotX, hotspotY);
 114
 115         ttm_bo_kunmap(&map);
 116 err_unreserve:
 117         ttm_bo_unreserve(&dmabuf->base);
 118
 119         return ret;
 120 }
 121
 122
 123 void vmw_cursor_update_position(struct vmw_private *dev_priv,
 124                                 bool show, int x, int y)
 125 {
 126         u32 __iomem *fifo_mem = dev_priv->mmio_virt;
 127         uint32_t count;
 128
 129         iowrite32(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
 130         iowrite32(x, fifo_mem + SVGA_FIFO_CURSOR_X);
 131         iowrite32(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
 132         count = ioread32(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 133         iowrite32(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 134 }
 135
 136 int vmw_du_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file_priv,
 137                            uint32_t handle, uint32_t width, uint32_t height)
 138 {
 139         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 140         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 141         struct vmw_surface *surface = NULL;
 142         struct vmw_dma_buffer *dmabuf = NULL;
 143         int ret;
 144
 145         /*
 146          * FIXME: Unclear whether there's any global state touched by the
 147          * cursor_set function, especially vmw_cursor_update_position looks
 148          * suspicious. For now take the easy route and reacquire all locks. We
 149          * can do this since the caller in the drm core doesn't check anything
 150          * which is protected by any looks.
 151          */
 152         drm_modeset_unlock_crtc(crtc);
 153         drm_modeset_lock_all(dev_priv->dev);
 154
 155         /* A lot of the code assumes this */
 156         if (handle && (width != 64 || height != 64)) {
 157                 ret = -EINVAL;
 158                 goto out;
 159         }
 160
 161         if (handle) {
 162                 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 163
 164                 ret = vmw_user_lookup_handle(dev_priv, tfile,
 165                                              handle, &surface, &dmabuf);
 166                 if (ret) {
 167                         DRM_ERROR("failed to find surface or dmabuf: %i\n", ret);
 168                         ret = -EINVAL;
 169                         goto out;
 170                 }
 171         }
 172
 173         /* need to do this before taking down old image */
 174         if (surface && !surface->snooper.image) {
 175                 DRM_ERROR("surface not suitable for cursor\n");
 176                 vmw_surface_unreference(&surface);
 177                 ret = -EINVAL;
 178                 goto out;
 179         }
 180
 181         /* takedown old cursor */
 182         if (du->cursor_surface) {
 183                 du->cursor_surface->snooper.crtc = NULL;
 184                 vmw_surface_unreference(&du->cursor_surface);
 185         }
 186         if (du->cursor_dmabuf)
 187                 vmw_dmabuf_unreference(&du->cursor_dmabuf);
 188
 189         /* setup new image */
 190         if (surface) {
 191                 /* vmw_user_surface_lookup takes one reference */
 192                 du->cursor_surface = surface;
 193
 194                 du->cursor_surface->snooper.crtc = crtc;
 195                 du->cursor_age = du->cursor_surface->snooper.age;
 196                 vmw_cursor_update_image(dev_priv, surface->snooper.image,
 197                                         64, 64, du->hotspot_x, du->hotspot_y);
 198         } else if (dmabuf) {
 199                 /* vmw_user_surface_lookup takes one reference */
 200                 du->cursor_dmabuf = dmabuf;
 201
 202                 ret = vmw_cursor_update_dmabuf(dev_priv, dmabuf, width, height,
 203                                                du->hotspot_x, du->hotspot_y);
 204         } else {
 205                 vmw_cursor_update_position(dev_priv, false, 0, 0);
 206                 ret = 0;
 207                 goto out;
 208         }
 209
 210         vmw_cursor_update_position(dev_priv, true,
 211                                    du->cursor_x + du->hotspot_x,
 212                                    du->cursor_y + du->hotspot_y);
 213
 214         ret = 0;
 215 out:
 216         drm_modeset_unlock_all(dev_priv->dev);
 217         drm_modeset_lock_crtc(crtc, crtc->cursor);
 218
 219         return ret;
 220 }
 221
 222 int vmw_du_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
 223 {
 224         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 225         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 226         bool shown = du->cursor_surface || du->cursor_dmabuf ? true : false;
 227
 228         du->cursor_x = x + crtc->x;
 229         du->cursor_y = y + crtc->y;
 230
 231         /*
 232          * FIXME: Unclear whether there's any global state touched by the
 233          * cursor_set function, especially vmw_cursor_update_position looks
 234          * suspicious. For now take the easy route and reacquire all locks. We
 235          * can do this since the caller in the drm core doesn't check anything
 236          * which is protected by any looks.
 237          */
 238         drm_modeset_unlock_crtc(crtc);
 239         drm_modeset_lock_all(dev_priv->dev);
 240
 241         vmw_cursor_update_position(dev_priv, shown,
 242                                    du->cursor_x + du->hotspot_x,
 243                                    du->cursor_y + du->hotspot_y);
 244
 245         drm_modeset_unlock_all(dev_priv->dev);
 246         drm_modeset_lock_crtc(crtc, crtc->cursor);
 247
 248         return 0;
 249 }
 250
 251 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
 252                           struct ttm_object_file *tfile,
 253                           struct ttm_buffer_object *bo,
 254                           SVGA3dCmdHeader *header)
 255 {
 256         struct ttm_bo_kmap_obj map;
 257         unsigned long kmap_offset;
 258         unsigned long kmap_num;
 259         SVGA3dCopyBox *box;
 260         unsigned box_count;
 261         void *virtual;
 262         bool dummy;
 263         struct vmw_dma_cmd {
 264                 SVGA3dCmdHeader header;
 265                 SVGA3dCmdSurfaceDMA dma;
 266         } *cmd;
 267         int i, ret;
 268
 269         cmd = container_of(header, struct vmw_dma_cmd, header);
 270
 271         /* No snooper installed */
 272         if (!srf->snooper.image)
 273                 return;
 274
 275         if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
 276                 DRM_ERROR("face and mipmap for cursors should never != 0\n");
 277                 return;
 278         }
 279
 280         if (cmd->header.size < 64) {
 281                 DRM_ERROR("at least one full copy box must be given\n");
 282                 return;
 283         }
 284
 285         box = (SVGA3dCopyBox *)&cmd[1];
 286         box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
 287                         sizeof(SVGA3dCopyBox);
 288
 289         if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
 290             box->x != 0    || box->y != 0    || box->z != 0    ||
 291             box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
 292             box->d != 1    || box_count != 1) {
 293                 /* TODO handle none page aligned offsets */
 294                 /* TODO handle more dst & src != 0 */
 295                 /* TODO handle more then one copy */
 296                 DRM_ERROR("Cant snoop dma request for cursor!\n");
 297                 DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
 298                           box->srcx, box->srcy, box->srcz,
 299                           box->x, box->y, box->z,
 300                           box->w, box->h, box->d, box_count,
 301                           cmd->dma.guest.ptr.offset);
 302                 return;
 303         }
 304
 305         kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
 306         kmap_num = (64*64*4) >> PAGE_SHIFT;
 307
 308         ret = ttm_bo_reserve(bo, true, false, false, NULL);
 309         if (unlikely(ret != 0)) {
 310                 DRM_ERROR("reserve failed\n");
 311                 return;
 312         }
 313
 314         ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
 315         if (unlikely(ret != 0))
 316                 goto err_unreserve;
 317
 318         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 319
 320         if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
 321                 memcpy(srf->snooper.image, virtual, 64*64*4);
 322         } else {
 323                 /* Image is unsigned pointer. */
 324                 for (i = 0; i < box->h; i++)
 325                         memcpy(srf->snooper.image + i * 64,
 326                                virtual + i * cmd->dma.guest.pitch,
 327                                box->w * 4);
 328         }
 329
 330         srf->snooper.age++;
 331
 332         ttm_bo_kunmap(&map);
 333 err_unreserve:
 334         ttm_bo_unreserve(bo);
 335 }
 336
 337 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
 338 {
 339         struct drm_device *dev = dev_priv->dev;
 340         struct vmw_display_unit *du;
 341         struct drm_crtc *crtc;
 342
 343         mutex_lock(&dev->mode_config.mutex);
 344
 345         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 346                 du = vmw_crtc_to_du(crtc);
 347                 if (!du->cursor_surface ||
 348                     du->cursor_age == du->cursor_surface->snooper.age)
 349                         continue;
 350
 351                 du->cursor_age = du->cursor_surface->snooper.age;
 352                 vmw_cursor_update_image(dev_priv,
 353                                         du->cursor_surface->snooper.image,
 354                                         64, 64, du->hotspot_x, du->hotspot_y);
 355         }
 356
 357         mutex_unlock(&dev->mode_config.mutex);
 358 }
 359
 360 /*
 361  * Generic framebuffer code
 362  */
 363
 364 /*
 365  * Surface framebuffer code
 366  */
 367
 368 static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
 369 {
 370         struct vmw_framebuffer_surface *vfbs =
 371                 vmw_framebuffer_to_vfbs(framebuffer);
 372
 373         drm_framebuffer_cleanup(framebuffer);
 374         vmw_surface_unreference(&vfbs->surface);
 375         if (vfbs->base.user_obj)
 376                 ttm_base_object_unref(&vfbs->base.user_obj);
 377
 378         kfree(vfbs);
 379 }
 380
 381 static int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
 382                                   struct drm_file *file_priv,
 383                                   unsigned flags, unsigned color,
 384                                   struct drm_clip_rect *clips,
 385                                   unsigned num_clips)
 386 {
 387         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 388         struct vmw_framebuffer_surface *vfbs =
 389                 vmw_framebuffer_to_vfbs(framebuffer);
 390         struct drm_clip_rect norect;
 391         int ret, inc = 1;
 392
 393         /* Legacy Display Unit does not support 3D */
 394         if (dev_priv->active_display_unit == vmw_du_legacy)
 395                 return -EINVAL;
 396
 397         drm_modeset_lock_all(dev_priv->dev);
 398
 399         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 400         if (unlikely(ret != 0)) {
 401                 drm_modeset_unlock_all(dev_priv->dev);
 402                 return ret;
 403         }
 404
 405         if (!num_clips) {
 406                 num_clips = 1;
 407                 clips = &norect;
 408                 norect.x1 = norect.y1 = 0;
 409                 norect.x2 = framebuffer->width;
 410                 norect.y2 = framebuffer->height;
 411         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 412                 num_clips /= 2;
 413                 inc = 2; /* skip source rects */
 414         }
 415
 416         if (dev_priv->active_display_unit == vmw_du_screen_object)
 417                 ret = vmw_kms_sou_do_surface_dirty(dev_priv, &vfbs->base,
 418                                                    clips, NULL, NULL, 0, 0,
 419                                                    num_clips, inc, NULL);
 420         else
 421                 ret = vmw_kms_stdu_surface_dirty(dev_priv, &vfbs->base,
 422                                                  clips, NULL, NULL, 0, 0,
 423                                                  num_clips, inc, NULL);
 424
 425         vmw_fifo_flush(dev_priv, false);
 426         ttm_read_unlock(&dev_priv->reservation_sem);
 427
 428         drm_modeset_unlock_all(dev_priv->dev);
 429
 430         return 0;
 431 }
 432
 433 /**
 434  * vmw_kms_readback - Perform a readback from the screen system to
 435  * a dma-buffer backed framebuffer.
 436  *
 437  * @dev_priv: Pointer to the device private structure.
 438  * @file_priv: Pointer to a struct drm_file identifying the caller.
 439  * Must be set to NULL if @user_fence_rep is NULL.
 440  * @vfb: Pointer to the dma-buffer backed framebuffer.
 441  * @user_fence_rep: User-space provided structure for fence information.
 442  * Must be set to non-NULL if @file_priv is non-NULL.
 443  * @vclips: Array of clip rects.
 444  * @num_clips: Number of clip rects in @vclips.
 445  *
 446  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 447  * interrupted.
 448  */
 449 int vmw_kms_readback(struct vmw_private *dev_priv,
 450                      struct drm_file *file_priv,
 451                      struct vmw_framebuffer *vfb,
 452                      struct drm_vmw_fence_rep __user *user_fence_rep,
 453                      struct drm_vmw_rect *vclips,
 454                      uint32_t num_clips)
 455 {
 456         switch (dev_priv->active_display_unit) {
 457         case vmw_du_screen_object:
 458                 return vmw_kms_sou_readback(dev_priv, file_priv, vfb,
 459                                             user_fence_rep, vclips, num_clips);
 460         case vmw_du_screen_target:
 461                 return vmw_kms_stdu_dma(dev_priv, file_priv, vfb,
 462                                         user_fence_rep, NULL, vclips, num_clips,
 463                                         1, false, true);
 464         default:
 465                 WARN_ONCE(true,
 466                           "Readback called with invalid display system.\n");
 467 }
 468
 469         return -ENOSYS;
 470 }
 471
 472
 473 static struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
 474         .destroy = vmw_framebuffer_surface_destroy,
 475         .dirty = vmw_framebuffer_surface_dirty,
 476 };
 477
 478 static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
 479                                            struct vmw_surface *surface,
 480                                            struct vmw_framebuffer **out,
 481                                            const struct drm_mode_fb_cmd
 482                                            *mode_cmd,
 483                                            bool is_dmabuf_proxy)
 484
 485 {
 486         struct drm_device *dev = dev_priv->dev;
 487         struct vmw_framebuffer_surface *vfbs;
 488         enum SVGA3dSurfaceFormat format;
 489         int ret;
 490
 491         /* 3D is only supported on HWv8 and newer hosts */
 492         if (dev_priv->active_display_unit == vmw_du_legacy)
 493                 return -ENOSYS;
 494
 495         /*
 496          * Sanity checks.
 497          */
 498
 499         /* Surface must be marked as a scanout. */
 500         if (unlikely(!surface->scanout))
 501                 return -EINVAL;
 502
 503         if (unlikely(surface->mip_levels[0] != 1 ||
 504                      surface->num_sizes != 1 ||
 505                      surface->base_size.width < mode_cmd->width ||
 506                      surface->base_size.height < mode_cmd->height ||
 507                      surface->base_size.depth != 1)) {
 508                 DRM_ERROR("Incompatible surface dimensions "
 509                           "for requested mode.\n");
 510                 return -EINVAL;
 511         }
 512
 513         switch (mode_cmd->depth) {
 514         case 32:
 515                 format = SVGA3D_A8R8G8B8;
 516                 break;
 517         case 24:
 518                 format = SVGA3D_X8R8G8B8;
 519                 break;
 520         case 16:
 521                 format = SVGA3D_R5G6B5;
 522                 break;
 523         case 15:
 524                 format = SVGA3D_A1R5G5B5;
 525                 break;
 526         default:
 527                 DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 528                 return -EINVAL;
 529         }
 530
 531         if (unlikely(format != surface->format)) {
 532                 DRM_ERROR("Invalid surface format for requested mode.\n");
 533                 return -EINVAL;
 534         }
 535
 536         vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
 537         if (!vfbs) {
 538                 ret = -ENOMEM;
 539                 goto out_err1;
 540         }
 541
 542         /* XXX get the first 3 from the surface info */
 543         vfbs->base.base.bits_per_pixel = mode_cmd->bpp;
 544         vfbs->base.base.pitches[0] = mode_cmd->pitch;
 545         vfbs->base.base.depth = mode_cmd->depth;
 546         vfbs->base.base.width = mode_cmd->width;
 547         vfbs->base.base.height = mode_cmd->height;
 548         vfbs->surface = vmw_surface_reference(surface);
 549         vfbs->base.user_handle = mode_cmd->handle;
 550         vfbs->is_dmabuf_proxy = is_dmabuf_proxy;
 551
 552         *out = &vfbs->base;
 553
 554         ret = drm_framebuffer_init(dev, &vfbs->base.base,
 555                                    &vmw_framebuffer_surface_funcs);
 556         if (ret)
 557                 goto out_err2;
 558
 559         return 0;
 560
 561 out_err2:
 562         vmw_surface_unreference(&surface);
 563         kfree(vfbs);
 564 out_err1:
 565         return ret;
 566 }
 567
 568 /*
 569  * Dmabuf framebuffer code
 570  */
 571
 572 static void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
 573 {
 574         struct vmw_framebuffer_dmabuf *vfbd =
 575                 vmw_framebuffer_to_vfbd(framebuffer);
 576
 577         drm_framebuffer_cleanup(framebuffer);
 578         vmw_dmabuf_unreference(&vfbd->buffer);
 579         if (vfbd->base.user_obj)
 580                 ttm_base_object_unref(&vfbd->base.user_obj);
 581
 582         kfree(vfbd);
 583 }
 584
 585 static int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
 586                                  struct drm_file *file_priv,
 587                                  unsigned flags, unsigned color,
 588                                  struct drm_clip_rect *clips,
 589                                  unsigned num_clips)
 590 {
 591         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 592         struct vmw_framebuffer_dmabuf *vfbd =
 593                 vmw_framebuffer_to_vfbd(framebuffer);
 594         struct drm_clip_rect norect;
 595         int ret, increment = 1;
 596
 597         drm_modeset_lock_all(dev_priv->dev);
 598
 599         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 600         if (unlikely(ret != 0)) {
 601                 drm_modeset_unlock_all(dev_priv->dev);
 602                 return ret;
 603         }
 604
 605         if (!num_clips) {
 606                 num_clips = 1;
 607                 clips = &norect;
 608                 norect.x1 = norect.y1 = 0;
 609                 norect.x2 = framebuffer->width;
 610                 norect.y2 = framebuffer->height;
 611         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 612                 num_clips /= 2;
 613                 increment = 2;
 614         }
 615
 616         switch (dev_priv->active_display_unit) {
 617         case vmw_du_screen_target:
 618                 ret = vmw_kms_stdu_dma(dev_priv, NULL, &vfbd->base, NULL,
 619                                        clips, NULL, num_clips, increment,
 620                                        true, true);
 621                 break;
 622         case vmw_du_screen_object:
 623                 ret = vmw_kms_sou_do_dmabuf_dirty(dev_priv, &vfbd->base,
 624                                                   clips, num_clips, increment,
 625                                                   true,
 626                                                   NULL);
 627                 break;
 628         case vmw_du_legacy:
 629                 ret = vmw_kms_ldu_do_dmabuf_dirty(dev_priv, &vfbd->base, 0, 0,
 630                                                   clips, num_clips, increment);
 631                 break;
 632         default:
 633                 ret = -EINVAL;
 634                 WARN_ONCE(true, "Dirty called with invalid display system.\n");
 635                 break;
 636         }
 637
 638         vmw_fifo_flush(dev_priv, false);
 639         ttm_read_unlock(&dev_priv->reservation_sem);
 640
 641         drm_modeset_unlock_all(dev_priv->dev);
 642
 643         return ret;
 644 }
 645
 646 static struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
 647         .destroy = vmw_framebuffer_dmabuf_destroy,
 648         .dirty = vmw_framebuffer_dmabuf_dirty,
 649 };
 650
 651 /**
 652  * Pin the dmabuffer to the start of vram.
 653  */
 654 static int vmw_framebuffer_pin(struct vmw_framebuffer *vfb)
 655 {
 656         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 657         struct vmw_dma_buffer *buf;
 658         int ret;
 659
 660         buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
 661                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
 662
 663         if (!buf)
 664                 return 0;
 665
 666         switch (dev_priv->active_display_unit) {
 667         case vmw_du_legacy:
 668                 vmw_overlay_pause_all(dev_priv);
 669                 ret = vmw_dmabuf_pin_in_start_of_vram(dev_priv, buf, false);
 670                 vmw_overlay_resume_all(dev_priv);
 671                 break;
 672         case vmw_du_screen_object:
 673         case vmw_du_screen_target:
 674                 if (vfb->dmabuf)
 675                         return vmw_dmabuf_pin_in_vram_or_gmr(dev_priv, buf,
 676                                                              false);
 677
 678                 return vmw_dmabuf_pin_in_placement(dev_priv, buf,
 679                                                    &vmw_mob_placement, false);
 680         default:
 681                 return -EINVAL;
 682         }
 683
 684         return ret;
 685 }
 686
 687 static int vmw_framebuffer_unpin(struct vmw_framebuffer *vfb)
 688 {
 689         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 690         struct vmw_dma_buffer *buf;
 691
 692         buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
 693                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
 694
 695         if (WARN_ON(!buf))
 696                 return 0;
 697
 698         return vmw_dmabuf_unpin(dev_priv, buf, false);
 699 }
 700
 701 /**
 702  * vmw_create_dmabuf_proxy - create a proxy surface for the DMA buf
 703  *
 704  * @dev: DRM device
 705  * @mode_cmd: parameters for the new surface
 706  * @dmabuf_mob: MOB backing the DMA buf
 707  * @srf_out: newly created surface
 708  *
 709  * When the content FB is a DMA buf, we create a surface as a proxy to the
 710  * same buffer.  This way we can do a surface copy rather than a surface DMA.
 711  * This is a more efficient approach
 712  *
 713  * RETURNS:
 714  * 0 on success, error code otherwise
 715  */
 716 static int vmw_create_dmabuf_proxy(struct drm_device *dev,
 717                                    const struct drm_mode_fb_cmd *mode_cmd,
 718                                    struct vmw_dma_buffer *dmabuf_mob,
 719                                    struct vmw_surface **srf_out)
 720 {
 721         uint32_t format;
 722         struct drm_vmw_size content_base_size;
 723         struct vmw_resource *res;
 724         int ret;
 725
 726         switch (mode_cmd->depth) {
 727         case 32:
 728         case 24:
 729                 format = SVGA3D_X8R8G8B8;
 730                 break;
 731
 732         case 16:
 733         case 15:
 734                 format = SVGA3D_R5G6B5;
 735                 break;
 736
 737         case 8:
 738                 format = SVGA3D_P8;
 739                 break;
 740
 741         default:
 742                 DRM_ERROR("Invalid framebuffer format %d\n", mode_cmd->depth);
 743                 return -EINVAL;
 744         }
 745
 746         content_base_size.width  = mode_cmd->width;
 747         content_base_size.height = mode_cmd->height;
 748         content_base_size.depth  = 1;
 749
 750         ret = vmw_surface_gb_priv_define(dev,
 751                         0, /* kernel visible only */
 752                         0, /* flags */
 753                         format,
 754                         true, /* can be a scanout buffer */
 755                         1, /* num of mip levels */
 756                         0,
 757                         content_base_size,
 758                         srf_out);
 759         if (ret) {
 760                 DRM_ERROR("Failed to allocate proxy content buffer\n");
 761                 return ret;
 762         }
 763
 764         res = &(*srf_out)->res;
 765
 766         /* Reserve and switch the backing mob. */
 767         mutex_lock(&res->dev_priv->cmdbuf_mutex);
 768         (void) vmw_resource_reserve(res, false, true);
 769         vmw_dmabuf_unreference(&res->backup);
 770         res->backup = vmw_dmabuf_reference(dmabuf_mob);
 771         res->backup_offset = 0;
 772         vmw_resource_unreserve(res, NULL, 0);
 773         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
 774
 775         return 0;
 776 }
 777
 778
 779
 780 static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
 781                                           struct vmw_dma_buffer *dmabuf,
 782                                           struct vmw_framebuffer **out,
 783                                           const struct drm_mode_fb_cmd
 784                                           *mode_cmd)
 785
 786 {
 787         struct drm_device *dev = dev_priv->dev;
 788         struct vmw_framebuffer_dmabuf *vfbd;
 789         unsigned int requested_size;
 790         int ret;
 791
 792         requested_size = mode_cmd->height * mode_cmd->pitch;
 793         if (unlikely(requested_size > dmabuf->base.num_pages * PAGE_SIZE)) {
 794                 DRM_ERROR("Screen buffer object size is too small "
 795                           "for requested mode.\n");
 796                 return -EINVAL;
 797         }
 798
 799         /* Limited framebuffer color depth support for screen objects */
 800         if (dev_priv->active_display_unit == vmw_du_screen_object) {
 801                 switch (mode_cmd->depth) {
 802                 case 32:
 803                 case 24:
 804                         /* Only support 32 bpp for 32 and 24 depth fbs */
 805                         if (mode_cmd->bpp == 32)
 806                                 break;
 807
 808                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 809                                   mode_cmd->depth, mode_cmd->bpp);
 810                         return -EINVAL;
 811                 case 16:
 812                 case 15:
 813                         /* Only support 16 bpp for 16 and 15 depth fbs */
 814                         if (mode_cmd->bpp == 16)
 815                                 break;
 816
 817                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 818                                   mode_cmd->depth, mode_cmd->bpp);
 819                         return -EINVAL;
 820                 default:
 821                         DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 822                         return -EINVAL;
 823                 }
 824         }
 825
 826         vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
 827         if (!vfbd) {
 828                 ret = -ENOMEM;
 829                 goto out_err1;
 830         }
 831
 832         vfbd->base.base.bits_per_pixel = mode_cmd->bpp;
 833         vfbd->base.base.pitches[0] = mode_cmd->pitch;
 834         vfbd->base.base.depth = mode_cmd->depth;
 835         vfbd->base.base.width = mode_cmd->width;
 836         vfbd->base.base.height = mode_cmd->height;
 837         vfbd->base.dmabuf = true;
 838         vfbd->buffer = vmw_dmabuf_reference(dmabuf);
 839         vfbd->base.user_handle = mode_cmd->handle;
 840         *out = &vfbd->base;
 841
 842         ret = drm_framebuffer_init(dev, &vfbd->base.base,
 843                                    &vmw_framebuffer_dmabuf_funcs);
 844         if (ret)
 845                 goto out_err2;
 846
 847         return 0;
 848
 849 out_err2:
 850         vmw_dmabuf_unreference(&dmabuf);
 851         kfree(vfbd);
 852 out_err1:
 853         return ret;
 854 }
 855
 856 /**
 857  * vmw_kms_new_framebuffer - Create a new framebuffer.
 858  *
 859  * @dev_priv: Pointer to device private struct.
 860  * @dmabuf: Pointer to dma buffer to wrap the kms framebuffer around.
 861  * Either @dmabuf or @surface must be NULL.
 862  * @surface: Pointer to a surface to wrap the kms framebuffer around.
 863  * Either @dmabuf or @surface must be NULL.
 864  * @only_2d: No presents will occur to this dma buffer based framebuffer. This
 865  * Helps the code to do some important optimizations.
 866  * @mode_cmd: Frame-buffer metadata.
 867  */
 868 struct vmw_framebuffer *
 869 vmw_kms_new_framebuffer(struct vmw_private *dev_priv,
 870                         struct vmw_dma_buffer *dmabuf,
 871                         struct vmw_surface *surface,
 872                         bool only_2d,
 873                         const struct drm_mode_fb_cmd *mode_cmd)
 874 {
 875         struct vmw_framebuffer *vfb = NULL;
 876         bool is_dmabuf_proxy = false;
 877         int ret;
 878
 879         /*
 880          * We cannot use the SurfaceDMA command in an non-accelerated VM,
 881          * therefore, wrap the DMA buf in a surface so we can use the
 882          * SurfaceCopy command.
 883          */
 884         if (dmabuf && only_2d &&
 885             dev_priv->active_display_unit == vmw_du_screen_target) {
 886                 ret = vmw_create_dmabuf_proxy(dev_priv->dev, mode_cmd,
 887                                               dmabuf, &surface);
 888                 if (ret)
 889                         return ERR_PTR(ret);
 890
 891                 is_dmabuf_proxy = true;
 892         }
 893
 894         /* Create the new framebuffer depending one what we have */
 895         if (surface) {
 896                 ret = vmw_kms_new_framebuffer_surface(dev_priv, surface, &vfb,
 897                                                       mode_cmd,
 898                                                       is_dmabuf_proxy);
 899
 900                 /*
 901                  * vmw_create_dmabuf_proxy() adds a reference that is no longer
 902                  * needed
 903                  */
 904                 if (is_dmabuf_proxy)
 905                         vmw_surface_unreference(&surface);
 906         } else if (dmabuf) {
 907                 ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, dmabuf, &vfb,
 908                                                      mode_cmd);
 909         } else {
 910                 BUG();
 911         }
 912
 913         if (ret)
 914                 return ERR_PTR(ret);
 915
 916         vfb->pin = vmw_framebuffer_pin;
 917         vfb->unpin = vmw_framebuffer_unpin;
 918
 919         return vfb;
 920 }
 921
 922 /*
 923  * Generic Kernel modesetting functions
 924  */
 925
 926 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
 927                                                  struct drm_file *file_priv,
 928                                                  struct drm_mode_fb_cmd2 *mode_cmd2)
 929 {
 930         struct vmw_private *dev_priv = vmw_priv(dev);
 931         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 932         struct vmw_framebuffer *vfb = NULL;
 933         struct vmw_surface *surface = NULL;
 934         struct vmw_dma_buffer *bo = NULL;
 935         struct ttm_base_object *user_obj;
 936         struct drm_mode_fb_cmd mode_cmd;
 937         int ret;
 938
 939         mode_cmd.width = mode_cmd2->width;
 940         mode_cmd.height = mode_cmd2->height;
 941         mode_cmd.pitch = mode_cmd2->pitches[0];
 942         mode_cmd.handle = mode_cmd2->handles[0];
 943         drm_fb_get_bpp_depth(mode_cmd2->pixel_format, &mode_cmd.depth,
 944                                     &mode_cmd.bpp);
 945
 946         /**
 947          * This code should be conditioned on Screen Objects not being used.
 948          * If screen objects are used, we can allocate a GMR to hold the
 949          * requested framebuffer.
 950          */
 951
 952         if (!vmw_kms_validate_mode_vram(dev_priv,
 953                                         mode_cmd.pitch,
 954                                         mode_cmd.height)) {
 955                 DRM_ERROR("Requested mode exceed bounding box limit.\n");
 956                 return ERR_PTR(-ENOMEM);
 957         }
 958
 959         /*
 960          * Take a reference on the user object of the resource
 961          * backing the kms fb. This ensures that user-space handle
 962          * lookups on that resource will always work as long as
 963          * it's registered with a kms framebuffer. This is important,
 964          * since vmw_execbuf_process identifies resources in the
 965          * command stream using user-space handles.
 966          */
 967
 968         user_obj = ttm_base_object_lookup(tfile, mode_cmd.handle);
 969         if (unlikely(user_obj == NULL)) {
 970                 DRM_ERROR("Could not locate requested kms frame buffer.\n");
 971                 return ERR_PTR(-ENOENT);
 972         }
 973
 974         /**
 975          * End conditioned code.
 976          */
 977
 978         /* returns either a dmabuf or surface */
 979         ret = vmw_user_lookup_handle(dev_priv, tfile,
 980                                      mode_cmd.handle,
 981                                      &surface, &bo);
 982         if (ret)
 983                 goto err_out;
 984
 985         vfb = vmw_kms_new_framebuffer(dev_priv, bo, surface,
 986                                       !(dev_priv->capabilities & SVGA_CAP_3D),
 987                                       &mode_cmd);
 988         if (IS_ERR(vfb)) {
 989                 ret = PTR_ERR(vfb);
 990                 goto err_out;
 991         }
 992
 993 err_out:
 994         /* vmw_user_lookup_handle takes one ref so does new_fb */
 995         if (bo)
 996                 vmw_dmabuf_unreference(&bo);
 997         if (surface)
 998                 vmw_surface_unreference(&surface);
 999
1000         if (ret) {
1001                 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1002                 ttm_base_object_unref(&user_obj);
1003                 return ERR_PTR(ret);
1004         } else
1005                 vfb->user_obj = user_obj;
1006
1007         return &vfb->base;
1008 }
1009
1010 static const struct drm_mode_config_funcs vmw_kms_funcs = {
1011         .fb_create = vmw_kms_fb_create,
1012 };
1013
1014 static int vmw_kms_generic_present(struct vmw_private *dev_priv,
1015                                    struct drm_file *file_priv,
1016                                    struct vmw_framebuffer *vfb,
1017                                    struct vmw_surface *surface,
1018                                    uint32_t sid,
1019                                    int32_t destX, int32_t destY,
1020                                    struct drm_vmw_rect *clips,
1021                                    uint32_t num_clips)
1022 {
1023         return vmw_kms_sou_do_surface_dirty(dev_priv, vfb, NULL, clips,
1024                                             &surface->res, destX, destY,
1025                                             num_clips, 1, NULL);
1026 }
1027
1028
1029 int vmw_kms_present(struct vmw_private *dev_priv,
1030                     struct drm_file *file_priv,
1031                     struct vmw_framebuffer *vfb,
1032                     struct vmw_surface *surface,
1033                     uint32_t sid,
1034                     int32_t destX, int32_t destY,
1035                     struct drm_vmw_rect *clips,
1036                     uint32_t num_clips)
1037 {
1038         int ret;
1039
1040         switch (dev_priv->active_display_unit) {
1041         case vmw_du_screen_target:
1042                 ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, clips,
1043                                                  &surface->res, destX, destY,
1044                                                  num_clips, 1, NULL);
1045                 break;
1046         case vmw_du_screen_object:
1047                 ret = vmw_kms_generic_present(dev_priv, file_priv, vfb, surface,
1048                                               sid, destX, destY, clips,
1049                                               num_clips);
1050                 break;
1051         default:
1052                 WARN_ONCE(true,
1053                           "Present called with invalid display system.\n");
1054                 ret = -ENOSYS;
1055                 break;
1056         }
1057         if (ret)
1058                 return ret;
1059
1060         vmw_fifo_flush(dev_priv, false);
1061
1062         return 0;
1063 }
1064
1065 int vmw_kms_init(struct vmw_private *dev_priv)
1066 {
1067         struct drm_device *dev = dev_priv->dev;
1068         int ret;
1069
1070         drm_mode_config_init(dev);
1071         dev->mode_config.funcs = &vmw_kms_funcs;
1072         dev->mode_config.min_width = 1;
1073         dev->mode_config.min_height = 1;
1074         dev->mode_config.max_width = dev_priv->texture_max_width;
1075         dev->mode_config.max_height = dev_priv->texture_max_height;
1076
1077         ret = vmw_kms_stdu_init_display(dev_priv);
1078         if (ret) {
1079                 ret = vmw_kms_sou_init_display(dev_priv);
1080                 if (ret) /* Fallback */
1081                         ret = vmw_kms_ldu_init_display(dev_priv);
1082         }
1083
1084         return ret;
1085 }
1086
1087 int vmw_kms_close(struct vmw_private *dev_priv)
1088 {
1089         int ret;
1090
1091         /*
1092          * Docs says we should take the lock before calling this function
1093          * but since it destroys encoders and our destructor calls
1094          * drm_encoder_cleanup which takes the lock we deadlock.
1095          */
1096         drm_mode_config_cleanup(dev_priv->dev);
1097         if (dev_priv->active_display_unit == vmw_du_screen_object)
1098                 ret = vmw_kms_sou_close_display(dev_priv);
1099         else if (dev_priv->active_display_unit == vmw_du_screen_target)
1100                 ret = vmw_kms_stdu_close_display(dev_priv);
1101         else
1102                 ret = vmw_kms_ldu_close_display(dev_priv);
1103
1104         return ret;
1105 }
1106
1107 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1108                                 struct drm_file *file_priv)
1109 {
1110         struct drm_vmw_cursor_bypass_arg *arg = data;
1111         struct vmw_display_unit *du;
1112         struct drm_crtc *crtc;
1113         int ret = 0;
1114
1115
1116         mutex_lock(&dev->mode_config.mutex);
1117         if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1118
1119                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1120                         du = vmw_crtc_to_du(crtc);
1121                         du->hotspot_x = arg->xhot;
1122                         du->hotspot_y = arg->yhot;
1123                 }
1124
1125                 mutex_unlock(&dev->mode_config.mutex);
1126                 return 0;
1127         }
1128
1129         crtc = drm_crtc_find(dev, arg->crtc_id);
1130         if (!crtc) {
1131                 ret = -ENOENT;
1132                 goto out;
1133         }
1134
1135         du = vmw_crtc_to_du(crtc);
1136
1137         du->hotspot_x = arg->xhot;
1138         du->hotspot_y = arg->yhot;
1139
1140 out:
1141         mutex_unlock(&dev->mode_config.mutex);
1142
1143         return ret;
1144 }
1145
1146 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1147                         unsigned width, unsigned height, unsigned pitch,
1148                         unsigned bpp, unsigned depth)
1149 {
1150         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1151                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1152         else if (vmw_fifo_have_pitchlock(vmw_priv))
1153                 iowrite32(pitch, vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1154         vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1155         vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1156         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1157
1158         if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1159                 DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1160                           depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1161                 return -EINVAL;
1162         }
1163
1164         return 0;
1165 }
1166
1167 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1168 {
1169         struct vmw_vga_topology_state *save;
1170         uint32_t i;
1171
1172         vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1173         vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1174         vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1175         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1176                 vmw_priv->vga_pitchlock =
1177                   vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1178         else if (vmw_fifo_have_pitchlock(vmw_priv))
1179                 vmw_priv->vga_pitchlock = ioread32(vmw_priv->mmio_virt +
1180                                                    SVGA_FIFO_PITCHLOCK);
1181
1182         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1183                 return 0;
1184
1185         vmw_priv->num_displays = vmw_read(vmw_priv,
1186                                           SVGA_REG_NUM_GUEST_DISPLAYS);
1187
1188         if (vmw_priv->num_displays == 0)
1189                 vmw_priv->num_displays = 1;
1190
1191         for (i = 0; i < vmw_priv->num_displays; ++i) {
1192                 save = &vmw_priv->vga_save[i];
1193                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1194                 save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1195                 save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1196                 save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1197                 save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1198                 save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1199                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1200                 if (i == 0 && vmw_priv->num_displays == 1 &&
1201                     save->width == 0 && save->height == 0) {
1202
1203                         /*
1204                          * It should be fairly safe to assume that these
1205                          * values are uninitialized.
1206                          */
1207
1208                         save->width = vmw_priv->vga_width - save->pos_x;
1209                         save->height = vmw_priv->vga_height - save->pos_y;
1210                 }
1211         }
1212
1213         return 0;
1214 }
1215
1216 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1217 {
1218         struct vmw_vga_topology_state *save;
1219         uint32_t i;
1220
1221         vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1222         vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1223         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1224         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1225                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1226                           vmw_priv->vga_pitchlock);
1227         else if (vmw_fifo_have_pitchlock(vmw_priv))
1228                 iowrite32(vmw_priv->vga_pitchlock,
1229                           vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1230
1231         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1232                 return 0;
1233
1234         for (i = 0; i < vmw_priv->num_displays; ++i) {
1235                 save = &vmw_priv->vga_save[i];
1236                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1237                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1238                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1239                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1240                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1241                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1242                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1243         }
1244
1245         return 0;
1246 }
1247
1248 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1249                                 uint32_t pitch,
1250                                 uint32_t height)
1251 {
1252         return ((u64) pitch * (u64) height) < (u64)
1253                 ((dev_priv->active_display_unit == vmw_du_screen_target) ?
1254                  dev_priv->prim_bb_mem : dev_priv->vram_size);
1255 }
1256
1257
1258 /**
1259  * Function called by DRM code called with vbl_lock held.
1260  */
1261 u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc)
1262 {
1263         return 0;
1264 }
1265
1266 /**
1267  * Function called by DRM code called with vbl_lock held.
1268  */
1269 int vmw_enable_vblank(struct drm_device *dev, int crtc)
1270 {
1271         return -ENOSYS;
1272 }
1273
1274 /**
1275  * Function called by DRM code called with vbl_lock held.
1276  */
1277 void vmw_disable_vblank(struct drm_device *dev, int crtc)
1278 {
1279 }
1280
1281
1282 /*
1283  * Small shared kms functions.
1284  */
1285
1286 static int vmw_du_update_layout(struct vmw_private *dev_priv, unsigned num,
1287                          struct drm_vmw_rect *rects)
1288 {
1289         struct drm_device *dev = dev_priv->dev;
1290         struct vmw_display_unit *du;
1291         struct drm_connector *con;
1292
1293         mutex_lock(&dev->mode_config.mutex);
1294
1295 #if 0
1296         {
1297                 unsigned int i;
1298
1299                 DRM_INFO("%s: new layout ", __func__);
1300                 for (i = 0; i < num; i++)
1301                         DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
1302                                  rects[i].w, rects[i].h);
1303                 DRM_INFO("\n");
1304         }
1305 #endif
1306
1307         list_for_each_entry(con, &dev->mode_config.connector_list, head) {
1308                 du = vmw_connector_to_du(con);
1309                 if (num > du->unit) {
1310                         du->pref_width = rects[du->unit].w;
1311                         du->pref_height = rects[du->unit].h;
1312                         du->pref_active = true;
1313                         du->gui_x = rects[du->unit].x;
1314                         du->gui_y = rects[du->unit].y;
1315                 } else {
1316                         du->pref_width = 800;
1317                         du->pref_height = 600;
1318                         du->pref_active = false;
1319                 }
1320                 con->status = vmw_du_connector_detect(con, true);
1321         }
1322
1323         mutex_unlock(&dev->mode_config.mutex);
1324
1325         return 0;
1326 }
1327
1328 void vmw_du_crtc_save(struct drm_crtc *crtc)
1329 {
1330 }
1331
1332 void vmw_du_crtc_restore(struct drm_crtc *crtc)
1333 {
1334 }
1335
1336 void vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
1337                            u16 *r, u16 *g, u16 *b,
1338                            uint32_t start, uint32_t size)
1339 {
1340         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
1341         int i;
1342
1343         for (i = 0; i < size; i++) {
1344                 DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
1345                           r[i], g[i], b[i]);
1346                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
1347                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
1348                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
1349         }
1350 }
1351
1352 void vmw_du_connector_dpms(struct drm_connector *connector, int mode)
1353 {
1354 }
1355
1356 void vmw_du_connector_save(struct drm_connector *connector)
1357 {
1358 }
1359
1360 void vmw_du_connector_restore(struct drm_connector *connector)
1361 {
1362 }
1363
1364 enum drm_connector_status
1365 vmw_du_connector_detect(struct drm_connector *connector, bool force)
1366 {
1367         uint32_t num_displays;
1368         struct drm_device *dev = connector->dev;
1369         struct vmw_private *dev_priv = vmw_priv(dev);
1370         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1371
1372         num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
1373
1374         return ((vmw_connector_to_du(connector)->unit < num_displays &&
1375                  du->pref_active) ?
1376                 connector_status_connected : connector_status_disconnected);
1377 }
1378
1379 static struct drm_display_mode vmw_kms_connector_builtin[] = {
1380         /* 640x480@60Hz */
1381         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
1382                    752, 800, 0, 480, 489, 492, 525, 0,
1383                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1384         /* 800x600@60Hz */
1385         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
1386                    968, 1056, 0, 600, 601, 605, 628, 0,
1387                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1388         /* 1024x768@60Hz */
1389         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1390                    1184, 1344, 0, 768, 771, 777, 806, 0,
1391                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1392         /* 1152x864@75Hz */
1393         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1394                    1344, 1600, 0, 864, 865, 868, 900, 0,
1395                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1396         /* 1280x768@60Hz */
1397         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
1398                    1472, 1664, 0, 768, 771, 778, 798, 0,
1399                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1400         /* 1280x800@60Hz */
1401         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
1402                    1480, 1680, 0, 800, 803, 809, 831, 0,
1403                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
1404         /* 1280x960@60Hz */
1405         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
1406                    1488, 1800, 0, 960, 961, 964, 1000, 0,
1407                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1408         /* 1280x1024@60Hz */
1409         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
1410                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
1411                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1412         /* 1360x768@60Hz */
1413         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
1414                    1536, 1792, 0, 768, 771, 777, 795, 0,
1415                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1416         /* 1440x1050@60Hz */
1417         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
1418                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
1419                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1420         /* 1440x900@60Hz */
1421         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
1422                    1672, 1904, 0, 900, 903, 909, 934, 0,
1423                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1424         /* 1600x1200@60Hz */
1425         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
1426                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
1427                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1428         /* 1680x1050@60Hz */
1429         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
1430                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
1431                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1432         /* 1792x1344@60Hz */
1433         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
1434                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
1435                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1436         /* 1853x1392@60Hz */
1437         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
1438                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
1439                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1440         /* 1920x1200@60Hz */
1441         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
1442                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
1443                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1444         /* 1920x1440@60Hz */
1445         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
1446                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
1447                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1448         /* 2560x1600@60Hz */
1449         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
1450                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
1451                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1452         /* Terminate */
1453         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
1454 };
1455
1456 /**
1457  * vmw_guess_mode_timing - Provide fake timings for a
1458  * 60Hz vrefresh mode.
1459  *
1460  * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
1461  * members filled in.
1462  */
1463 void vmw_guess_mode_timing(struct drm_display_mode *mode)
1464 {
1465         mode->hsync_start = mode->hdisplay + 50;
1466         mode->hsync_end = mode->hsync_start + 50;
1467         mode->htotal = mode->hsync_end + 50;
1468
1469         mode->vsync_start = mode->vdisplay + 50;
1470         mode->vsync_end = mode->vsync_start + 50;
1471         mode->vtotal = mode->vsync_end + 50;
1472
1473         mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
1474         mode->vrefresh = drm_mode_vrefresh(mode);
1475 }
1476
1477
1478 int vmw_du_connector_fill_modes(struct drm_connector *connector,
1479                                 uint32_t max_width, uint32_t max_height)
1480 {
1481         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1482         struct drm_device *dev = connector->dev;
1483         struct vmw_private *dev_priv = vmw_priv(dev);
1484         struct drm_display_mode *mode = NULL;
1485         struct drm_display_mode *bmode;
1486         struct drm_display_mode prefmode = { DRM_MODE("preferred",
1487                 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
1488                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1489                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
1490         };
1491         int i;
1492         u32 assumed_bpp = 2;
1493
1494         /*
1495          * If using screen objects, then assume 32-bpp because that's what the
1496          * SVGA device is assuming
1497          */
1498         if (dev_priv->active_display_unit == vmw_du_screen_object)
1499                 assumed_bpp = 4;
1500
1501         if (dev_priv->active_display_unit == vmw_du_screen_target) {
1502                 max_width  = min(max_width,  dev_priv->stdu_max_width);
1503                 max_height = min(max_height, dev_priv->stdu_max_height);
1504         }
1505
1506         /* Add preferred mode */
1507         mode = drm_mode_duplicate(dev, &prefmode);
1508         if (!mode)
1509                 return 0;
1510         mode->hdisplay = du->pref_width;
1511         mode->vdisplay = du->pref_height;
1512         vmw_guess_mode_timing(mode);
1513
1514         if (vmw_kms_validate_mode_vram(dev_priv,
1515                                         mode->hdisplay * assumed_bpp,
1516                                         mode->vdisplay)) {
1517                 drm_mode_probed_add(connector, mode);
1518         } else {
1519                 drm_mode_destroy(dev, mode);
1520                 mode = NULL;
1521         }
1522
1523         if (du->pref_mode) {
1524                 list_del_init(&du->pref_mode->head);
1525                 drm_mode_destroy(dev, du->pref_mode);
1526         }
1527
1528         /* mode might be null here, this is intended */
1529         du->pref_mode = mode;
1530
1531         for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
1532                 bmode = &vmw_kms_connector_builtin[i];
1533                 if (bmode->hdisplay > max_width ||
1534                     bmode->vdisplay > max_height)
1535                         continue;
1536
1537                 if (!vmw_kms_validate_mode_vram(dev_priv,
1538                                                 bmode->hdisplay * assumed_bpp,
1539                                                 bmode->vdisplay))
1540                         continue;
1541
1542                 mode = drm_mode_duplicate(dev, bmode);
1543                 if (!mode)
1544                         return 0;
1545                 mode->vrefresh = drm_mode_vrefresh(mode);
1546
1547                 drm_mode_probed_add(connector, mode);
1548         }
1549
1550         drm_mode_connector_list_update(connector, true);
1551         /* Move the prefered mode first, help apps pick the right mode. */
1552         drm_mode_sort(&connector->modes);
1553
1554         return 1;
1555 }
1556
1557 int vmw_du_connector_set_property(struct drm_connector *connector,
1558                                   struct drm_property *property,
1559                                   uint64_t val)
1560 {
1561         return 0;
1562 }
1563
1564
1565 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
1566                                 struct drm_file *file_priv)
1567 {
1568         struct vmw_private *dev_priv = vmw_priv(dev);
1569         struct drm_vmw_update_layout_arg *arg =
1570                 (struct drm_vmw_update_layout_arg *)data;
1571         void __user *user_rects;
1572         struct drm_vmw_rect *rects;
1573         unsigned rects_size;
1574         int ret;
1575         int i;
1576         u64 total_pixels = 0;
1577         struct drm_mode_config *mode_config = &dev->mode_config;
1578         struct drm_vmw_rect bounding_box = {0};
1579
1580         if (!arg->num_outputs) {
1581                 struct drm_vmw_rect def_rect = {0, 0, 800, 600};
1582                 vmw_du_update_layout(dev_priv, 1, &def_rect);
1583                 return 0;
1584         }
1585
1586         rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
1587         rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
1588                         GFP_KERNEL);
1589         if (unlikely(!rects))
1590                 return -ENOMEM;
1591
1592         user_rects = (void __user *)(unsigned long)arg->rects;
1593         ret = copy_from_user(rects, user_rects, rects_size);
1594         if (unlikely(ret != 0)) {
1595                 DRM_ERROR("Failed to get rects.\n");
1596                 ret = -EFAULT;
1597                 goto out_free;
1598         }
1599
1600         for (i = 0; i < arg->num_outputs; ++i) {
1601                 if (rects[i].x < 0 ||
1602                     rects[i].y < 0 ||
1603                     rects[i].x + rects[i].w > mode_config->max_width ||
1604                     rects[i].y + rects[i].h > mode_config->max_height) {
1605                         DRM_ERROR("Invalid GUI layout.\n");
1606                         ret = -EINVAL;
1607                         goto out_free;
1608                 }
1609
1610                 /*
1611                  * bounding_box.w and bunding_box.h are used as
1612                  * lower-right coordinates
1613                  */
1614                 if (rects[i].x + rects[i].w > bounding_box.w)
1615                         bounding_box.w = rects[i].x + rects[i].w;
1616
1617                 if (rects[i].y + rects[i].h > bounding_box.h)
1618                         bounding_box.h = rects[i].y + rects[i].h;
1619
1620                 total_pixels += (u64) rects[i].w * (u64) rects[i].h;
1621         }
1622
1623         if (dev_priv->active_display_unit == vmw_du_screen_target) {
1624                 /*
1625                  * For Screen Targets, the limits for a toplogy are:
1626                  *      1. Bounding box (assuming 32bpp) must be < prim_bb_mem
1627                  *      2. Total pixels (assuming 32bpp) must be < prim_bb_mem
1628                  */
1629                 u64 bb_mem    = bounding_box.w * bounding_box.h * 4;
1630                 u64 pixel_mem = total_pixels * 4;
1631
1632                 if (bb_mem > dev_priv->prim_bb_mem) {
1633                         DRM_ERROR("Topology is beyond supported limits.\n");
1634                         ret = -EINVAL;
1635                         goto out_free;
1636                 }
1637
1638                 if (pixel_mem > dev_priv->prim_bb_mem) {
1639                         DRM_ERROR("Combined output size too large\n");
1640                         ret = -EINVAL;
1641                         goto out_free;
1642                 }
1643         }
1644
1645         vmw_du_update_layout(dev_priv, arg->num_outputs, rects);
1646
1647 out_free:
1648         kfree(rects);
1649         return ret;
1650 }
1651
1652 /**
1653  * vmw_kms_helper_dirty - Helper to build commands and perform actions based
1654  * on a set of cliprects and a set of display units.
1655  *
1656  * @dev_priv: Pointer to a device private structure.
1657  * @framebuffer: Pointer to the framebuffer on which to perform the actions.
1658  * @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL.
1659  * Cliprects are given in framebuffer coordinates.
1660  * @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must
1661  * be NULL. Cliprects are given in source coordinates.
1662  * @dest_x: X coordinate offset for the crtc / destination clip rects.
1663  * @dest_y: Y coordinate offset for the crtc / destination clip rects.
1664  * @num_clips: Number of cliprects in the @clips or @vclips array.
1665  * @increment: Integer with which to increment the clip counter when looping.
1666  * Used to skip a predetermined number of clip rects.
1667  * @dirty: Closure structure. See the description of struct vmw_kms_dirty.
1668  */
1669 int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
1670                          struct vmw_framebuffer *framebuffer,
1671                          const struct drm_clip_rect *clips,
1672                          const struct drm_vmw_rect *vclips,
1673                          s32 dest_x, s32 dest_y,
1674                          int num_clips,
1675                          int increment,
1676                          struct vmw_kms_dirty *dirty)
1677 {
1678         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
1679         struct drm_crtc *crtc;
1680         u32 num_units = 0;
1681         u32 i, k;
1682         int ret;
1683
1684         dirty->dev_priv = dev_priv;
1685
1686         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
1687                 if (crtc->primary->fb != &framebuffer->base)
1688                         continue;
1689                 units[num_units++] = vmw_crtc_to_du(crtc);
1690         }
1691
1692         for (k = 0; k < num_units; k++) {
1693                 struct vmw_display_unit *unit = units[k];
1694                 s32 crtc_x = unit->crtc.x;
1695                 s32 crtc_y = unit->crtc.y;
1696                 s32 crtc_width = unit->crtc.mode.hdisplay;
1697                 s32 crtc_height = unit->crtc.mode.vdisplay;
1698                 const struct drm_clip_rect *clips_ptr = clips;
1699                 const struct drm_vmw_rect *vclips_ptr = vclips;
1700
1701                 dirty->unit = unit;
1702                 if (dirty->fifo_reserve_size > 0) {
1703                         dirty->cmd = vmw_fifo_reserve(dev_priv,
1704                                                       dirty->fifo_reserve_size);
1705                         if (!dirty->cmd) {
1706                                 DRM_ERROR("Couldn't reserve fifo space "
1707                                           "for dirty blits.\n");
1708                                 return ret;
1709                         }
1710                         memset(dirty->cmd, 0, dirty->fifo_reserve_size);
1711                 }
1712                 dirty->num_hits = 0;
1713                 for (i = 0; i < num_clips; i++, clips_ptr += increment,
1714                        vclips_ptr += increment) {
1715                         s32 clip_left;
1716                         s32 clip_top;
1717
1718                         /*
1719                          * Select clip array type. Note that integer type
1720                          * in @clips is unsigned short, whereas in @vclips
1721                          * it's 32-bit.
1722                          */
1723                         if (clips) {
1724                                 dirty->fb_x = (s32) clips_ptr->x1;
1725                                 dirty->fb_y = (s32) clips_ptr->y1;
1726                                 dirty->unit_x2 = (s32) clips_ptr->x2 + dest_x -
1727                                         crtc_x;
1728                                 dirty->unit_y2 = (s32) clips_ptr->y2 + dest_y -
1729                                         crtc_y;
1730                         } else {
1731                                 dirty->fb_x = vclips_ptr->x;
1732                                 dirty->fb_y = vclips_ptr->y;
1733                                 dirty->unit_x2 = dirty->fb_x + vclips_ptr->w +
1734                                         dest_x - crtc_x;
1735                                 dirty->unit_y2 = dirty->fb_y + vclips_ptr->h +
1736                                         dest_y - crtc_y;
1737                         }
1738
1739                         dirty->unit_x1 = dirty->fb_x + dest_x - crtc_x;
1740                         dirty->unit_y1 = dirty->fb_y + dest_y - crtc_y;
1741
1742                         /* Skip this clip if it's outside the crtc region */
1743                         if (dirty->unit_x1 >= crtc_width ||
1744                             dirty->unit_y1 >= crtc_height ||
1745                             dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0)
1746                                 continue;
1747
1748                         /* Clip right and bottom to crtc limits */
1749                         dirty->unit_x2 = min_t(s32, dirty->unit_x2,
1750                                                crtc_width);
1751                         dirty->unit_y2 = min_t(s32, dirty->unit_y2,
1752                                                crtc_height);
1753
1754                         /* Clip left and top to crtc limits */
1755                         clip_left = min_t(s32, dirty->unit_x1, 0);
1756                         clip_top = min_t(s32, dirty->unit_y1, 0);
1757                         dirty->unit_x1 -= clip_left;
1758                         dirty->unit_y1 -= clip_top;
1759                         dirty->fb_x -= clip_left;
1760                         dirty->fb_y -= clip_top;
1761
1762                         dirty->clip(dirty);
1763                 }
1764
1765                 dirty->fifo_commit(dirty);
1766         }
1767
1768         return 0;
1769 }
1770
1771 /**
1772  * vmw_kms_helper_buffer_prepare - Reserve and validate a buffer object before
1773  * command submission.
1774  *
1775  * @dev_priv. Pointer to a device private structure.
1776  * @buf: The buffer object
1777  * @interruptible: Whether to perform waits as interruptible.
1778  * @validate_as_mob: Whether the buffer should be validated as a MOB. If false,
1779  * The buffer will be validated as a GMR. Already pinned buffers will not be
1780  * validated.
1781  *
1782  * Returns 0 on success, negative error code on failure, -ERESTARTSYS if
1783  * interrupted by a signal.
1784  */
1785 int vmw_kms_helper_buffer_prepare(struct vmw_private *dev_priv,
1786                                   struct vmw_dma_buffer *buf,
1787                                   bool interruptible,
1788                                   bool validate_as_mob)
1789 {
1790         struct ttm_buffer_object *bo = &buf->base;
1791         int ret;
1792
1793         ttm_bo_reserve(bo, false, false, interruptible, NULL);
1794         ret = vmw_validate_single_buffer(dev_priv, bo, interruptible,
1795                                          validate_as_mob);
1796         if (ret)
1797                 ttm_bo_unreserve(bo);
1798
1799         return ret;
1800 }
1801
1802 /**
1803  * vmw_kms_helper_buffer_revert - Undo the actions of
1804  * vmw_kms_helper_buffer_prepare.
1805  *
1806  * @res: Pointer to the buffer object.
1807  *
1808  * Helper to be used if an error forces the caller to undo the actions of
1809  * vmw_kms_helper_buffer_prepare.
1810  */
1811 void vmw_kms_helper_buffer_revert(struct vmw_dma_buffer *buf)
1812 {
1813         if (buf)
1814                 ttm_bo_unreserve(&buf->base);
1815 }
1816
1817 /**
1818  * vmw_kms_helper_buffer_finish - Unreserve and fence a buffer object after
1819  * kms command submission.
1820  *
1821  * @dev_priv: Pointer to a device private structure.
1822  * @file_priv: Pointer to a struct drm_file representing the caller's
1823  * connection. Must be set to NULL if @user_fence_rep is NULL, and conversely
1824  * if non-NULL, @user_fence_rep must be non-NULL.
1825  * @buf: The buffer object.
1826  * @out_fence:  Optional pointer to a fence pointer. If non-NULL, a
1827  * ref-counted fence pointer is returned here.
1828  * @user_fence_rep: Optional pointer to a user-space provided struct
1829  * drm_vmw_fence_rep. If provided, @file_priv must also be provided and the
1830  * function copies fence data to user-space in a fail-safe manner.
1831  */
1832 void vmw_kms_helper_buffer_finish(struct vmw_private *dev_priv,
1833                                   struct drm_file *file_priv,
1834                                   struct vmw_dma_buffer *buf,
1835                                   struct vmw_fence_obj **out_fence,
1836                                   struct drm_vmw_fence_rep __user *
1837                                   user_fence_rep)
1838 {
1839         struct vmw_fence_obj *fence;
1840         uint32_t handle;
1841         int ret;
1842
1843         ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
1844                                          file_priv ? &handle : NULL);
1845         if (buf)
1846                 vmw_fence_single_bo(&buf->base, fence);
1847         if (file_priv)
1848                 vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
1849                                             ret, user_fence_rep, fence,
1850                                             handle);
1851         if (out_fence)
1852                 *out_fence = fence;
1853         else
1854                 vmw_fence_obj_unreference(&fence);
1855
1856         vmw_kms_helper_buffer_revert(buf);
1857 }
1858
1859
1860 /**
1861  * vmw_kms_helper_resource_revert - Undo the actions of
1862  * vmw_kms_helper_resource_prepare.
1863  *
1864  * @res: Pointer to the resource. Typically a surface.
1865  *
1866  * Helper to be used if an error forces the caller to undo the actions of
1867  * vmw_kms_helper_resource_prepare.
1868  */
1869 void vmw_kms_helper_resource_revert(struct vmw_resource *res)
1870 {
1871         vmw_kms_helper_buffer_revert(res->backup);
1872         vmw_resource_unreserve(res, NULL, 0);
1873         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1874 }
1875
1876 /**
1877  * vmw_kms_helper_resource_prepare - Reserve and validate a resource before
1878  * command submission.
1879  *
1880  * @res: Pointer to the resource. Typically a surface.
1881  * @interruptible: Whether to perform waits as interruptible.
1882  *
1883  * Reserves and validates also the backup buffer if a guest-backed resource.
1884  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
1885  * interrupted by a signal.
1886  */
1887 int vmw_kms_helper_resource_prepare(struct vmw_resource *res,
1888                                     bool interruptible)
1889 {
1890         int ret = 0;
1891
1892         if (interruptible)
1893                 ret = mutex_lock_interruptible(&res->dev_priv->cmdbuf_mutex);
1894         else
1895                 mutex_lock(&res->dev_priv->cmdbuf_mutex);
1896
1897         if (unlikely(ret != 0))
1898                 return -ERESTARTSYS;
1899
1900         ret = vmw_resource_reserve(res, interruptible, false);
1901         if (ret)
1902                 goto out_unlock;
1903
1904         if (res->backup) {
1905                 ret = vmw_kms_helper_buffer_prepare(res->dev_priv, res->backup,
1906                                                     interruptible,
1907                                                     res->dev_priv->has_mob);
1908                 if (ret)
1909                         goto out_unreserve;
1910         }
1911         ret = vmw_resource_validate(res);
1912         if (ret)
1913                 goto out_revert;
1914         return 0;
1915
1916 out_revert:
1917         vmw_kms_helper_buffer_revert(res->backup);
1918 out_unreserve:
1919         vmw_resource_unreserve(res, NULL, 0);
1920 out_unlock:
1921         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1922         return ret;
1923 }
1924
1925 /**
1926  * vmw_kms_helper_resource_finish - Unreserve and fence a resource after
1927  * kms command submission.
1928  *
1929  * @res: Pointer to the resource. Typically a surface.
1930  * @out_fence: Optional pointer to a fence pointer. If non-NULL, a
1931  * ref-counted fence pointer is returned here.
1932  */
1933 void vmw_kms_helper_resource_finish(struct vmw_resource *res,
1934                              struct vmw_fence_obj **out_fence)
1935 {
1936         if (res->backup || out_fence)
1937                 vmw_kms_helper_buffer_finish(res->dev_priv, NULL, res->backup,
1938                                              out_fence, NULL);
1939
1940         vmw_resource_unreserve(res, NULL, 0);
1941         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1942 }
1943
1944 /**
1945  * vmw_kms_update_proxy - Helper function to update a proxy surface from
1946  * its backing MOB.
1947  *
1948  * @res: Pointer to the surface resource
1949  * @clips: Clip rects in framebuffer (surface) space.
1950  * @num_clips: Number of clips in @clips.
1951  * @increment: Integer with which to increment the clip counter when looping.
1952  * Used to skip a predetermined number of clip rects.
1953  *
1954  * This function makes sure the proxy surface is updated from its backing MOB
1955  * using the region given by @clips. The surface resource @res and its backing
1956  * MOB needs to be reserved and validated on call.
1957  */
1958 int vmw_kms_update_proxy(struct vmw_resource *res,
1959                          const struct drm_clip_rect *clips,
1960                          unsigned num_clips,
1961                          int increment)
1962 {
1963         struct vmw_private *dev_priv = res->dev_priv;
1964         struct drm_vmw_size *size = &vmw_res_to_srf(res)->base_size;
1965         struct {
1966                 SVGA3dCmdHeader header;
1967                 SVGA3dCmdUpdateGBImage body;
1968         } *cmd;
1969         SVGA3dBox *box;
1970         size_t copy_size = 0;
1971         int i;
1972
1973         if (!clips)
1974                 return 0;
1975
1976         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) * num_clips);
1977         if (!cmd) {
1978                 DRM_ERROR("Couldn't reserve fifo space for proxy surface "
1979                           "update.\n");
1980                 return -ENOMEM;
1981         }
1982
1983         for (i = 0; i < num_clips; ++i, clips += increment, ++cmd) {
1984                 box = &cmd->body.box;
1985
1986                 cmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
1987                 cmd->header.size = sizeof(cmd->body);
1988                 cmd->body.image.sid = res->id;
1989                 cmd->body.image.face = 0;
1990                 cmd->body.image.mipmap = 0;
1991
1992                 if (clips->x1 > size->width || clips->x2 > size->width ||
1993                     clips->y1 > size->height || clips->y2 > size->height) {
1994                         DRM_ERROR("Invalid clips outsize of framebuffer.\n");
1995                         return -EINVAL;
1996                 }
1997
1998                 box->x = clips->x1;
1999                 box->y = clips->y1;
2000                 box->z = 0;
2001                 box->w = clips->x2 - clips->x1;
2002                 box->h = clips->y2 - clips->y1;
2003                 box->d = 1;
2004
2005                 copy_size += sizeof(*cmd);
2006         }
2007
2008         vmw_fifo_commit(dev_priv, copy_size);
2009
2010         return 0;
2011 }
2012
2013 int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
2014                             unsigned unit,
2015                             u32 max_width,
2016                             u32 max_height,
2017                             struct drm_connector **p_con,
2018                             struct drm_crtc **p_crtc,
2019                             struct drm_display_mode **p_mode)
2020 {
2021         struct drm_connector *con;
2022         struct vmw_display_unit *du;
2023         struct drm_display_mode *mode;
2024         int i = 0;
2025
2026         list_for_each_entry(con, &dev_priv->dev->mode_config.connector_list,
2027                             head) {
2028                 if (i == unit)
2029                         break;
2030
2031                 ++i;
2032         }
2033
2034         if (i != unit) {
2035                 DRM_ERROR("Could not find initial display unit.\n");
2036                 return -EINVAL;
2037         }
2038
2039         if (list_empty(&con->modes))
2040                 (void) vmw_du_connector_fill_modes(con, max_width, max_height);
2041
2042         if (list_empty(&con->modes)) {
2043                 DRM_ERROR("Could not find initial display mode.\n");
2044                 return -EINVAL;
2045         }
2046
2047         du = vmw_connector_to_du(con);
2048         *p_con = con;
2049         *p_crtc = &du->crtc;
2050
2051         list_for_each_entry(mode, &con->modes, head) {
2052                 if (mode->type & DRM_MODE_TYPE_PREFERRED)
2053                         break;
2054         }
2055
2056         if (mode->type & DRM_MODE_TYPE_PREFERRED)
2057                 *p_mode = mode;
2058         else {
2059                 WARN_ONCE(true, "Could not find initial preferred mode.\n");
2060                 *p_mode = list_first_entry(&con->modes,
2061                                            struct drm_display_mode,
2062                                            head);
2063         }
2064
2065         return 0;
2066 }