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         if (!vmw_surface_reference(surface)) {
 543                 DRM_ERROR("failed to reference surface %p\n", surface);
 544                 ret = -EINVAL;
 545                 goto out_err2;
 546         }
 547
 548         /* XXX get the first 3 from the surface info */
 549         vfbs->base.base.bits_per_pixel = mode_cmd->bpp;
 550         vfbs->base.base.pitches[0] = mode_cmd->pitch;
 551         vfbs->base.base.depth = mode_cmd->depth;
 552         vfbs->base.base.width = mode_cmd->width;
 553         vfbs->base.base.height = mode_cmd->height;
 554         vfbs->surface = surface;
 555         vfbs->base.user_handle = mode_cmd->handle;
 556         vfbs->is_dmabuf_proxy = is_dmabuf_proxy;
 557
 558         *out = &vfbs->base;
 559
 560         ret = drm_framebuffer_init(dev, &vfbs->base.base,
 561                                    &vmw_framebuffer_surface_funcs);
 562         if (ret)
 563                 goto out_err3;
 564
 565         return 0;
 566
 567 out_err3:
 568         vmw_surface_unreference(&surface);
 569 out_err2:
 570         kfree(vfbs);
 571 out_err1:
 572         return ret;
 573 }
 574
 575 /*
 576  * Dmabuf framebuffer code
 577  */
 578
 579 static void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
 580 {
 581         struct vmw_framebuffer_dmabuf *vfbd =
 582                 vmw_framebuffer_to_vfbd(framebuffer);
 583
 584         drm_framebuffer_cleanup(framebuffer);
 585         vmw_dmabuf_unreference(&vfbd->buffer);
 586         if (vfbd->base.user_obj)
 587                 ttm_base_object_unref(&vfbd->base.user_obj);
 588
 589         kfree(vfbd);
 590 }
 591
 592 static int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
 593                                  struct drm_file *file_priv,
 594                                  unsigned flags, unsigned color,
 595                                  struct drm_clip_rect *clips,
 596                                  unsigned num_clips)
 597 {
 598         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 599         struct vmw_framebuffer_dmabuf *vfbd =
 600                 vmw_framebuffer_to_vfbd(framebuffer);
 601         struct drm_clip_rect norect;
 602         int ret, increment = 1;
 603
 604         drm_modeset_lock_all(dev_priv->dev);
 605
 606         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 607         if (unlikely(ret != 0)) {
 608                 drm_modeset_unlock_all(dev_priv->dev);
 609                 return ret;
 610         }
 611
 612         if (!num_clips) {
 613                 num_clips = 1;
 614                 clips = &norect;
 615                 norect.x1 = norect.y1 = 0;
 616                 norect.x2 = framebuffer->width;
 617                 norect.y2 = framebuffer->height;
 618         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 619                 num_clips /= 2;
 620                 increment = 2;
 621         }
 622
 623         switch (dev_priv->active_display_unit) {
 624         case vmw_du_screen_target:
 625                 ret = vmw_kms_stdu_dma(dev_priv, NULL, &vfbd->base, NULL,
 626                                        clips, NULL, num_clips, increment,
 627                                        true, true);
 628                 break;
 629         case vmw_du_screen_object:
 630                 ret = vmw_kms_sou_do_dmabuf_dirty(dev_priv, &vfbd->base,
 631                                                   clips, num_clips, increment,
 632                                                   true,
 633                                                   NULL);
 634                 break;
 635         case vmw_du_legacy:
 636                 ret = vmw_kms_ldu_do_dmabuf_dirty(dev_priv, &vfbd->base, 0, 0,
 637                                                   clips, num_clips, increment);
 638                 break;
 639         default:
 640                 ret = -EINVAL;
 641                 WARN_ONCE(true, "Dirty called with invalid display system.\n");
 642                 break;
 643         }
 644
 645         vmw_fifo_flush(dev_priv, false);
 646         ttm_read_unlock(&dev_priv->reservation_sem);
 647
 648         drm_modeset_unlock_all(dev_priv->dev);
 649
 650         return ret;
 651 }
 652
 653 static struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
 654         .destroy = vmw_framebuffer_dmabuf_destroy,
 655         .dirty = vmw_framebuffer_dmabuf_dirty,
 656 };
 657
 658 /**
 659  * Pin the dmabuffer to the start of vram.
 660  */
 661 static int vmw_framebuffer_pin(struct vmw_framebuffer *vfb)
 662 {
 663         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 664         struct vmw_dma_buffer *buf;
 665         int ret;
 666
 667         buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
 668                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
 669
 670         if (!buf)
 671                 return 0;
 672
 673         switch (dev_priv->active_display_unit) {
 674         case vmw_du_legacy:
 675                 vmw_overlay_pause_all(dev_priv);
 676                 ret = vmw_dmabuf_pin_in_start_of_vram(dev_priv, buf, false);
 677                 vmw_overlay_resume_all(dev_priv);
 678                 break;
 679         case vmw_du_screen_object:
 680         case vmw_du_screen_target:
 681                 if (vfb->dmabuf)
 682                         return vmw_dmabuf_pin_in_vram_or_gmr(dev_priv, buf,
 683                                                              false);
 684
 685                 return vmw_dmabuf_pin_in_placement(dev_priv, buf,
 686                                                    &vmw_mob_placement, false);
 687         default:
 688                 return -EINVAL;
 689         }
 690
 691         return ret;
 692 }
 693
 694 static int vmw_framebuffer_unpin(struct vmw_framebuffer *vfb)
 695 {
 696         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 697         struct vmw_dma_buffer *buf;
 698
 699         buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
 700                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
 701
 702         if (WARN_ON(!buf))
 703                 return 0;
 704
 705         return vmw_dmabuf_unpin(dev_priv, buf, false);
 706 }
 707
 708 /**
 709  * vmw_create_dmabuf_proxy - create a proxy surface for the DMA buf
 710  *
 711  * @dev: DRM device
 712  * @mode_cmd: parameters for the new surface
 713  * @dmabuf_mob: MOB backing the DMA buf
 714  * @srf_out: newly created surface
 715  *
 716  * When the content FB is a DMA buf, we create a surface as a proxy to the
 717  * same buffer.  This way we can do a surface copy rather than a surface DMA.
 718  * This is a more efficient approach
 719  *
 720  * RETURNS:
 721  * 0 on success, error code otherwise
 722  */
 723 static int vmw_create_dmabuf_proxy(struct drm_device *dev,
 724                                    const struct drm_mode_fb_cmd *mode_cmd,
 725                                    struct vmw_dma_buffer *dmabuf_mob,
 726                                    struct vmw_surface **srf_out)
 727 {
 728         uint32_t format;
 729         struct drm_vmw_size content_base_size;
 730         struct vmw_resource *res;
 731         int ret;
 732
 733         switch (mode_cmd->depth) {
 734         case 32:
 735         case 24:
 736                 format = SVGA3D_X8R8G8B8;
 737                 break;
 738
 739         case 16:
 740         case 15:
 741                 format = SVGA3D_R5G6B5;
 742                 break;
 743
 744         case 8:
 745                 format = SVGA3D_P8;
 746                 break;
 747
 748         default:
 749                 DRM_ERROR("Invalid framebuffer format %d\n", mode_cmd->depth);
 750                 return -EINVAL;
 751         }
 752
 753         content_base_size.width  = mode_cmd->width;
 754         content_base_size.height = mode_cmd->height;
 755         content_base_size.depth  = 1;
 756
 757         ret = vmw_surface_gb_priv_define(dev,
 758                         0, /* kernel visible only */
 759                         0, /* flags */
 760                         format,
 761                         true, /* can be a scanout buffer */
 762                         1, /* num of mip levels */
 763                         0,
 764                         content_base_size,
 765                         srf_out);
 766         if (ret) {
 767                 DRM_ERROR("Failed to allocate proxy content buffer\n");
 768                 return ret;
 769         }
 770
 771         res = &(*srf_out)->res;
 772
 773         /* Reserve and switch the backing mob. */
 774         mutex_lock(&res->dev_priv->cmdbuf_mutex);
 775         (void) vmw_resource_reserve(res, false, true);
 776         vmw_dmabuf_unreference(&res->backup);
 777         res->backup = vmw_dmabuf_reference(dmabuf_mob);
 778         res->backup_offset = 0;
 779         vmw_resource_unreserve(res, NULL, 0);
 780         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
 781
 782         return 0;
 783 }
 784
 785
 786
 787 static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
 788                                           struct vmw_dma_buffer *dmabuf,
 789                                           struct vmw_framebuffer **out,
 790                                           const struct drm_mode_fb_cmd
 791                                           *mode_cmd)
 792
 793 {
 794         struct drm_device *dev = dev_priv->dev;
 795         struct vmw_framebuffer_dmabuf *vfbd;
 796         unsigned int requested_size;
 797         int ret;
 798
 799         requested_size = mode_cmd->height * mode_cmd->pitch;
 800         if (unlikely(requested_size > dmabuf->base.num_pages * PAGE_SIZE)) {
 801                 DRM_ERROR("Screen buffer object size is too small "
 802                           "for requested mode.\n");
 803                 return -EINVAL;
 804         }
 805
 806         /* Limited framebuffer color depth support for screen objects */
 807         if (dev_priv->active_display_unit == vmw_du_screen_object) {
 808                 switch (mode_cmd->depth) {
 809                 case 32:
 810                 case 24:
 811                         /* Only support 32 bpp for 32 and 24 depth fbs */
 812                         if (mode_cmd->bpp == 32)
 813                                 break;
 814
 815                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 816                                   mode_cmd->depth, mode_cmd->bpp);
 817                         return -EINVAL;
 818                 case 16:
 819                 case 15:
 820                         /* Only support 16 bpp for 16 and 15 depth fbs */
 821                         if (mode_cmd->bpp == 16)
 822                                 break;
 823
 824                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 825                                   mode_cmd->depth, mode_cmd->bpp);
 826                         return -EINVAL;
 827                 default:
 828                         DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 829                         return -EINVAL;
 830                 }
 831         }
 832
 833         vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
 834         if (!vfbd) {
 835                 ret = -ENOMEM;
 836                 goto out_err1;
 837         }
 838
 839         if (!vmw_dmabuf_reference(dmabuf)) {
 840                 DRM_ERROR("failed to reference dmabuf %p\n", dmabuf);
 841                 ret = -EINVAL;
 842                 goto out_err2;
 843         }
 844
 845         vfbd->base.base.bits_per_pixel = mode_cmd->bpp;
 846         vfbd->base.base.pitches[0] = mode_cmd->pitch;
 847         vfbd->base.base.depth = mode_cmd->depth;
 848         vfbd->base.base.width = mode_cmd->width;
 849         vfbd->base.base.height = mode_cmd->height;
 850         vfbd->base.dmabuf = true;
 851         vfbd->buffer = dmabuf;
 852         vfbd->base.user_handle = mode_cmd->handle;
 853         *out = &vfbd->base;
 854
 855         ret = drm_framebuffer_init(dev, &vfbd->base.base,
 856                                    &vmw_framebuffer_dmabuf_funcs);
 857         if (ret)
 858                 goto out_err3;
 859
 860         return 0;
 861
 862 out_err3:
 863         vmw_dmabuf_unreference(&dmabuf);
 864 out_err2:
 865         kfree(vfbd);
 866 out_err1:
 867         return ret;
 868 }
 869
 870 /**
 871  * vmw_kms_new_framebuffer - Create a new framebuffer.
 872  *
 873  * @dev_priv: Pointer to device private struct.
 874  * @dmabuf: Pointer to dma buffer to wrap the kms framebuffer around.
 875  * Either @dmabuf or @surface must be NULL.
 876  * @surface: Pointer to a surface to wrap the kms framebuffer around.
 877  * Either @dmabuf or @surface must be NULL.
 878  * @only_2d: No presents will occur to this dma buffer based framebuffer. This
 879  * Helps the code to do some important optimizations.
 880  * @mode_cmd: Frame-buffer metadata.
 881  */
 882 struct vmw_framebuffer *
 883 vmw_kms_new_framebuffer(struct vmw_private *dev_priv,
 884                         struct vmw_dma_buffer *dmabuf,
 885                         struct vmw_surface *surface,
 886                         bool only_2d,
 887                         const struct drm_mode_fb_cmd *mode_cmd)
 888 {
 889         struct vmw_framebuffer *vfb;
 890         bool is_dmabuf_proxy = false;
 891         int ret;
 892
 893         /*
 894          * We cannot use the SurfaceDMA command in an non-accelerated VM,
 895          * therefore, wrap the DMA buf in a surface so we can use the
 896          * SurfaceCopy command.
 897          */
 898         if (dmabuf && only_2d &&
 899             dev_priv->active_display_unit == vmw_du_screen_target) {
 900                 ret = vmw_create_dmabuf_proxy(dev_priv->dev, mode_cmd,
 901                                               dmabuf, &surface);
 902                 if (ret)
 903                         return ERR_PTR(ret);
 904
 905                 is_dmabuf_proxy = true;
 906         }
 907
 908         /* Create the new framebuffer depending one what we have */
 909         if (surface)
 910                 ret = vmw_kms_new_framebuffer_surface(dev_priv, surface, &vfb,
 911                                                       mode_cmd,
 912                                                       is_dmabuf_proxy);
 913         else if (dmabuf)
 914                 ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, dmabuf, &vfb,
 915                                                      mode_cmd);
 916         else
 917                 BUG();
 918
 919         if (ret)
 920                 return ERR_PTR(ret);
 921
 922         vfb->pin = vmw_framebuffer_pin;
 923         vfb->unpin = vmw_framebuffer_unpin;
 924
 925         return vfb;
 926 }
 927
 928 /*
 929  * Generic Kernel modesetting functions
 930  */
 931
 932 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
 933                                                  struct drm_file *file_priv,
 934                                                  struct drm_mode_fb_cmd2 *mode_cmd2)
 935 {
 936         struct vmw_private *dev_priv = vmw_priv(dev);
 937         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 938         struct vmw_framebuffer *vfb = NULL;
 939         struct vmw_surface *surface = NULL;
 940         struct vmw_dma_buffer *bo = NULL;
 941         struct ttm_base_object *user_obj;
 942         struct drm_mode_fb_cmd mode_cmd;
 943         int ret;
 944
 945         mode_cmd.width = mode_cmd2->width;
 946         mode_cmd.height = mode_cmd2->height;
 947         mode_cmd.pitch = mode_cmd2->pitches[0];
 948         mode_cmd.handle = mode_cmd2->handles[0];
 949         drm_fb_get_bpp_depth(mode_cmd2->pixel_format, &mode_cmd.depth,
 950                                     &mode_cmd.bpp);
 951
 952         /**
 953          * This code should be conditioned on Screen Objects not being used.
 954          * If screen objects are used, we can allocate a GMR to hold the
 955          * requested framebuffer.
 956          */
 957
 958         if (!vmw_kms_validate_mode_vram(dev_priv,
 959                                         mode_cmd.pitch,
 960                                         mode_cmd.height)) {
 961                 DRM_ERROR("Requested mode exceed bounding box limit.\n");
 962                 return ERR_PTR(-ENOMEM);
 963         }
 964
 965         /*
 966          * Take a reference on the user object of the resource
 967          * backing the kms fb. This ensures that user-space handle
 968          * lookups on that resource will always work as long as
 969          * it's registered with a kms framebuffer. This is important,
 970          * since vmw_execbuf_process identifies resources in the
 971          * command stream using user-space handles.
 972          */
 973
 974         user_obj = ttm_base_object_lookup(tfile, mode_cmd.handle);
 975         if (unlikely(user_obj == NULL)) {
 976                 DRM_ERROR("Could not locate requested kms frame buffer.\n");
 977                 return ERR_PTR(-ENOENT);
 978         }
 979
 980         /**
 981          * End conditioned code.
 982          */
 983
 984         /* returns either a dmabuf or surface */
 985         ret = vmw_user_lookup_handle(dev_priv, tfile,
 986                                      mode_cmd.handle,
 987                                      &surface, &bo);
 988         if (ret)
 989                 goto err_out;
 990
 991         vfb = vmw_kms_new_framebuffer(dev_priv, bo, surface,
 992                                       !(dev_priv->capabilities & SVGA_CAP_3D),
 993                                       &mode_cmd);
 994         if (IS_ERR(vfb)) {
 995                 ret = PTR_ERR(vfb);
 996                 goto err_out;
 997         }
 998
 999 err_out:
1000         /* vmw_user_lookup_handle takes one ref so does new_fb */
1001         if (bo)
1002                 vmw_dmabuf_unreference(&bo);
1003         if (surface)
1004                 vmw_surface_unreference(&surface);
1005
1006         if (ret) {
1007                 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1008                 ttm_base_object_unref(&user_obj);
1009                 return ERR_PTR(ret);
1010         } else
1011                 vfb->user_obj = user_obj;
1012
1013         return &vfb->base;
1014 }
1015
1016 static const struct drm_mode_config_funcs vmw_kms_funcs = {
1017         .fb_create = vmw_kms_fb_create,
1018 };
1019
1020 static int vmw_kms_generic_present(struct vmw_private *dev_priv,
1021                                    struct drm_file *file_priv,
1022                                    struct vmw_framebuffer *vfb,
1023                                    struct vmw_surface *surface,
1024                                    uint32_t sid,
1025                                    int32_t destX, int32_t destY,
1026                                    struct drm_vmw_rect *clips,
1027                                    uint32_t num_clips)
1028 {
1029         return vmw_kms_sou_do_surface_dirty(dev_priv, vfb, NULL, clips,
1030                                             &surface->res, destX, destY,
1031                                             num_clips, 1, NULL);
1032 }
1033
1034
1035 int vmw_kms_present(struct vmw_private *dev_priv,
1036                     struct drm_file *file_priv,
1037                     struct vmw_framebuffer *vfb,
1038                     struct vmw_surface *surface,
1039                     uint32_t sid,
1040                     int32_t destX, int32_t destY,
1041                     struct drm_vmw_rect *clips,
1042                     uint32_t num_clips)
1043 {
1044         int ret;
1045
1046         switch (dev_priv->active_display_unit) {
1047         case vmw_du_screen_target:
1048                 ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, clips,
1049                                                  &surface->res, destX, destY,
1050                                                  num_clips, 1, NULL);
1051                 break;
1052         case vmw_du_screen_object:
1053                 ret = vmw_kms_generic_present(dev_priv, file_priv, vfb, surface,
1054                                               sid, destX, destY, clips,
1055                                               num_clips);
1056                 break;
1057         default:
1058                 WARN_ONCE(true,
1059                           "Present called with invalid display system.\n");
1060                 ret = -ENOSYS;
1061                 break;
1062         }
1063         if (ret)
1064                 return ret;
1065
1066         vmw_fifo_flush(dev_priv, false);
1067
1068         return 0;
1069 }
1070
1071 int vmw_kms_init(struct vmw_private *dev_priv)
1072 {
1073         struct drm_device *dev = dev_priv->dev;
1074         int ret;
1075
1076         drm_mode_config_init(dev);
1077         dev->mode_config.funcs = &vmw_kms_funcs;
1078         dev->mode_config.min_width = 1;
1079         dev->mode_config.min_height = 1;
1080         /* assumed largest fb size */
1081         dev->mode_config.max_width = 8192;
1082         dev->mode_config.max_height = 8192;
1083
1084         ret = vmw_kms_stdu_init_display(dev_priv);
1085         if (ret) {
1086                 ret = vmw_kms_sou_init_display(dev_priv);
1087                 if (ret) /* Fallback */
1088                         ret = vmw_kms_ldu_init_display(dev_priv);
1089         }
1090
1091         return ret;
1092 }
1093
1094 int vmw_kms_close(struct vmw_private *dev_priv)
1095 {
1096         int ret;
1097
1098         /*
1099          * Docs says we should take the lock before calling this function
1100          * but since it destroys encoders and our destructor calls
1101          * drm_encoder_cleanup which takes the lock we deadlock.
1102          */
1103         drm_mode_config_cleanup(dev_priv->dev);
1104         if (dev_priv->active_display_unit == vmw_du_screen_object)
1105                 ret = vmw_kms_sou_close_display(dev_priv);
1106         else if (dev_priv->active_display_unit == vmw_du_screen_target)
1107                 ret = vmw_kms_stdu_close_display(dev_priv);
1108         else
1109                 ret = vmw_kms_ldu_close_display(dev_priv);
1110
1111         return ret;
1112 }
1113
1114 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1115                                 struct drm_file *file_priv)
1116 {
1117         struct drm_vmw_cursor_bypass_arg *arg = data;
1118         struct vmw_display_unit *du;
1119         struct drm_crtc *crtc;
1120         int ret = 0;
1121
1122
1123         mutex_lock(&dev->mode_config.mutex);
1124         if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1125
1126                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1127                         du = vmw_crtc_to_du(crtc);
1128                         du->hotspot_x = arg->xhot;
1129                         du->hotspot_y = arg->yhot;
1130                 }
1131
1132                 mutex_unlock(&dev->mode_config.mutex);
1133                 return 0;
1134         }
1135
1136         crtc = drm_crtc_find(dev, arg->crtc_id);
1137         if (!crtc) {
1138                 ret = -ENOENT;
1139                 goto out;
1140         }
1141
1142         du = vmw_crtc_to_du(crtc);
1143
1144         du->hotspot_x = arg->xhot;
1145         du->hotspot_y = arg->yhot;
1146
1147 out:
1148         mutex_unlock(&dev->mode_config.mutex);
1149
1150         return ret;
1151 }
1152
1153 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1154                         unsigned width, unsigned height, unsigned pitch,
1155                         unsigned bpp, unsigned depth)
1156 {
1157         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1158                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1159         else if (vmw_fifo_have_pitchlock(vmw_priv))
1160                 iowrite32(pitch, vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1161         vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1162         vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1163         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1164
1165         if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1166                 DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1167                           depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1168                 return -EINVAL;
1169         }
1170
1171         return 0;
1172 }
1173
1174 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1175 {
1176         struct vmw_vga_topology_state *save;
1177         uint32_t i;
1178
1179         vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1180         vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1181         vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1182         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1183                 vmw_priv->vga_pitchlock =
1184                   vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1185         else if (vmw_fifo_have_pitchlock(vmw_priv))
1186                 vmw_priv->vga_pitchlock = ioread32(vmw_priv->mmio_virt +
1187                                                    SVGA_FIFO_PITCHLOCK);
1188
1189         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1190                 return 0;
1191
1192         vmw_priv->num_displays = vmw_read(vmw_priv,
1193                                           SVGA_REG_NUM_GUEST_DISPLAYS);
1194
1195         if (vmw_priv->num_displays == 0)
1196                 vmw_priv->num_displays = 1;
1197
1198         for (i = 0; i < vmw_priv->num_displays; ++i) {
1199                 save = &vmw_priv->vga_save[i];
1200                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1201                 save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1202                 save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1203                 save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1204                 save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1205                 save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1206                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1207                 if (i == 0 && vmw_priv->num_displays == 1 &&
1208                     save->width == 0 && save->height == 0) {
1209
1210                         /*
1211                          * It should be fairly safe to assume that these
1212                          * values are uninitialized.
1213                          */
1214
1215                         save->width = vmw_priv->vga_width - save->pos_x;
1216                         save->height = vmw_priv->vga_height - save->pos_y;
1217                 }
1218         }
1219
1220         return 0;
1221 }
1222
1223 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1224 {
1225         struct vmw_vga_topology_state *save;
1226         uint32_t i;
1227
1228         vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1229         vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1230         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1231         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1232                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1233                           vmw_priv->vga_pitchlock);
1234         else if (vmw_fifo_have_pitchlock(vmw_priv))
1235                 iowrite32(vmw_priv->vga_pitchlock,
1236                           vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1237
1238         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1239                 return 0;
1240
1241         for (i = 0; i < vmw_priv->num_displays; ++i) {
1242                 save = &vmw_priv->vga_save[i];
1243                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1244                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1245                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1246                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1247                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1248                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1249                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1250         }
1251
1252         return 0;
1253 }
1254
1255 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1256                                 uint32_t pitch,
1257                                 uint32_t height)
1258 {
1259         return ((u64) pitch * (u64) height) < (u64)
1260                 ((dev_priv->active_display_unit == vmw_du_screen_target) ?
1261                  dev_priv->prim_bb_mem : dev_priv->vram_size);
1262 }
1263
1264
1265 /**
1266  * Function called by DRM code called with vbl_lock held.
1267  */
1268 u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc)
1269 {
1270         return 0;
1271 }
1272
1273 /**
1274  * Function called by DRM code called with vbl_lock held.
1275  */
1276 int vmw_enable_vblank(struct drm_device *dev, int crtc)
1277 {
1278         return -ENOSYS;
1279 }
1280
1281 /**
1282  * Function called by DRM code called with vbl_lock held.
1283  */
1284 void vmw_disable_vblank(struct drm_device *dev, int crtc)
1285 {
1286 }
1287
1288
1289 /*
1290  * Small shared kms functions.
1291  */
1292
1293 static int vmw_du_update_layout(struct vmw_private *dev_priv, unsigned num,
1294                          struct drm_vmw_rect *rects)
1295 {
1296         struct drm_device *dev = dev_priv->dev;
1297         struct vmw_display_unit *du;
1298         struct drm_connector *con;
1299
1300         mutex_lock(&dev->mode_config.mutex);
1301
1302 #if 0
1303         {
1304                 unsigned int i;
1305
1306                 DRM_INFO("%s: new layout ", __func__);
1307                 for (i = 0; i < num; i++)
1308                         DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
1309                                  rects[i].w, rects[i].h);
1310                 DRM_INFO("\n");
1311         }
1312 #endif
1313
1314         list_for_each_entry(con, &dev->mode_config.connector_list, head) {
1315                 du = vmw_connector_to_du(con);
1316                 if (num > du->unit) {
1317                         du->pref_width = rects[du->unit].w;
1318                         du->pref_height = rects[du->unit].h;
1319                         du->pref_active = true;
1320                         du->gui_x = rects[du->unit].x;
1321                         du->gui_y = rects[du->unit].y;
1322                 } else {
1323                         du->pref_width = 800;
1324                         du->pref_height = 600;
1325                         du->pref_active = false;
1326                 }
1327                 con->status = vmw_du_connector_detect(con, true);
1328         }
1329
1330         mutex_unlock(&dev->mode_config.mutex);
1331
1332         return 0;
1333 }
1334
1335 void vmw_du_crtc_save(struct drm_crtc *crtc)
1336 {
1337 }
1338
1339 void vmw_du_crtc_restore(struct drm_crtc *crtc)
1340 {
1341 }
1342
1343 void vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
1344                            u16 *r, u16 *g, u16 *b,
1345                            uint32_t start, uint32_t size)
1346 {
1347         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
1348         int i;
1349
1350         for (i = 0; i < size; i++) {
1351                 DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
1352                           r[i], g[i], b[i]);
1353                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
1354                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
1355                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
1356         }
1357 }
1358
1359 void vmw_du_connector_dpms(struct drm_connector *connector, int mode)
1360 {
1361 }
1362
1363 void vmw_du_connector_save(struct drm_connector *connector)
1364 {
1365 }
1366
1367 void vmw_du_connector_restore(struct drm_connector *connector)
1368 {
1369 }
1370
1371 enum drm_connector_status
1372 vmw_du_connector_detect(struct drm_connector *connector, bool force)
1373 {
1374         uint32_t num_displays;
1375         struct drm_device *dev = connector->dev;
1376         struct vmw_private *dev_priv = vmw_priv(dev);
1377         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1378
1379         num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
1380
1381         return ((vmw_connector_to_du(connector)->unit < num_displays &&
1382                  du->pref_active) ?
1383                 connector_status_connected : connector_status_disconnected);
1384 }
1385
1386 static struct drm_display_mode vmw_kms_connector_builtin[] = {
1387         /* 640x480@60Hz */
1388         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
1389                    752, 800, 0, 480, 489, 492, 525, 0,
1390                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1391         /* 800x600@60Hz */
1392         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
1393                    968, 1056, 0, 600, 601, 605, 628, 0,
1394                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1395         /* 1024x768@60Hz */
1396         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1397                    1184, 1344, 0, 768, 771, 777, 806, 0,
1398                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1399         /* 1152x864@75Hz */
1400         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1401                    1344, 1600, 0, 864, 865, 868, 900, 0,
1402                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1403         /* 1280x768@60Hz */
1404         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
1405                    1472, 1664, 0, 768, 771, 778, 798, 0,
1406                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1407         /* 1280x800@60Hz */
1408         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
1409                    1480, 1680, 0, 800, 803, 809, 831, 0,
1410                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
1411         /* 1280x960@60Hz */
1412         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
1413                    1488, 1800, 0, 960, 961, 964, 1000, 0,
1414                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1415         /* 1280x1024@60Hz */
1416         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
1417                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
1418                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1419         /* 1360x768@60Hz */
1420         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
1421                    1536, 1792, 0, 768, 771, 777, 795, 0,
1422                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1423         /* 1440x1050@60Hz */
1424         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
1425                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
1426                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1427         /* 1440x900@60Hz */
1428         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
1429                    1672, 1904, 0, 900, 903, 909, 934, 0,
1430                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1431         /* 1600x1200@60Hz */
1432         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
1433                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
1434                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1435         /* 1680x1050@60Hz */
1436         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
1437                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
1438                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1439         /* 1792x1344@60Hz */
1440         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
1441                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
1442                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1443         /* 1853x1392@60Hz */
1444         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
1445                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
1446                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1447         /* 1920x1200@60Hz */
1448         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
1449                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
1450                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1451         /* 1920x1440@60Hz */
1452         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
1453                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
1454                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1455         /* 2560x1600@60Hz */
1456         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
1457                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
1458                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1459         /* Terminate */
1460         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
1461 };
1462
1463 /**
1464  * vmw_guess_mode_timing - Provide fake timings for a
1465  * 60Hz vrefresh mode.
1466  *
1467  * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
1468  * members filled in.
1469  */
1470 void vmw_guess_mode_timing(struct drm_display_mode *mode)
1471 {
1472         mode->hsync_start = mode->hdisplay + 50;
1473         mode->hsync_end = mode->hsync_start + 50;
1474         mode->htotal = mode->hsync_end + 50;
1475
1476         mode->vsync_start = mode->vdisplay + 50;
1477         mode->vsync_end = mode->vsync_start + 50;
1478         mode->vtotal = mode->vsync_end + 50;
1479
1480         mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
1481         mode->vrefresh = drm_mode_vrefresh(mode);
1482 }
1483
1484
1485 int vmw_du_connector_fill_modes(struct drm_connector *connector,
1486                                 uint32_t max_width, uint32_t max_height)
1487 {
1488         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1489         struct drm_device *dev = connector->dev;
1490         struct vmw_private *dev_priv = vmw_priv(dev);
1491         struct drm_display_mode *mode = NULL;
1492         struct drm_display_mode *bmode;
1493         struct drm_display_mode prefmode = { DRM_MODE("preferred",
1494                 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
1495                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1496                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
1497         };
1498         int i;
1499         u32 assumed_bpp = 2;
1500
1501         /*
1502          * If using screen objects, then assume 32-bpp because that's what the
1503          * SVGA device is assuming
1504          */
1505         if (dev_priv->active_display_unit == vmw_du_screen_object)
1506                 assumed_bpp = 4;
1507
1508         if (dev_priv->active_display_unit == vmw_du_screen_target) {
1509                 max_width  = min(max_width,  dev_priv->stdu_max_width);
1510                 max_height = min(max_height, dev_priv->stdu_max_height);
1511         }
1512
1513         /* Add preferred mode */
1514         mode = drm_mode_duplicate(dev, &prefmode);
1515         if (!mode)
1516                 return 0;
1517         mode->hdisplay = du->pref_width;
1518         mode->vdisplay = du->pref_height;
1519         vmw_guess_mode_timing(mode);
1520
1521         if (vmw_kms_validate_mode_vram(dev_priv,
1522                                         mode->hdisplay * assumed_bpp,
1523                                         mode->vdisplay)) {
1524                 drm_mode_probed_add(connector, mode);
1525         } else {
1526                 drm_mode_destroy(dev, mode);
1527                 mode = NULL;
1528         }
1529
1530         if (du->pref_mode) {
1531                 list_del_init(&du->pref_mode->head);
1532                 drm_mode_destroy(dev, du->pref_mode);
1533         }
1534
1535         /* mode might be null here, this is intended */
1536         du->pref_mode = mode;
1537
1538         for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
1539                 bmode = &vmw_kms_connector_builtin[i];
1540                 if (bmode->hdisplay > max_width ||
1541                     bmode->vdisplay > max_height)
1542                         continue;
1543
1544                 if (!vmw_kms_validate_mode_vram(dev_priv,
1545                                                 bmode->hdisplay * assumed_bpp,
1546                                                 bmode->vdisplay))
1547                         continue;
1548
1549                 mode = drm_mode_duplicate(dev, bmode);
1550                 if (!mode)
1551                         return 0;
1552                 mode->vrefresh = drm_mode_vrefresh(mode);
1553
1554                 drm_mode_probed_add(connector, mode);
1555         }
1556
1557         drm_mode_connector_list_update(connector, true);
1558         /* Move the prefered mode first, help apps pick the right mode. */
1559         drm_mode_sort(&connector->modes);
1560
1561         return 1;
1562 }
1563
1564 int vmw_du_connector_set_property(struct drm_connector *connector,
1565                                   struct drm_property *property,
1566                                   uint64_t val)
1567 {
1568         return 0;
1569 }
1570
1571
1572 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
1573                                 struct drm_file *file_priv)
1574 {
1575         struct vmw_private *dev_priv = vmw_priv(dev);
1576         struct drm_vmw_update_layout_arg *arg =
1577                 (struct drm_vmw_update_layout_arg *)data;
1578         void __user *user_rects;
1579         struct drm_vmw_rect *rects;
1580         unsigned rects_size;
1581         int ret;
1582         int i;
1583         struct drm_mode_config *mode_config = &dev->mode_config;
1584         struct drm_vmw_rect bounding_box = {0};
1585
1586         if (!arg->num_outputs) {
1587                 struct drm_vmw_rect def_rect = {0, 0, 800, 600};
1588                 vmw_du_update_layout(dev_priv, 1, &def_rect);
1589                 return 0;
1590         }
1591
1592         rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
1593         rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
1594                         GFP_KERNEL);
1595         if (unlikely(!rects))
1596                 return -ENOMEM;
1597
1598         user_rects = (void __user *)(unsigned long)arg->rects;
1599         ret = copy_from_user(rects, user_rects, rects_size);
1600         if (unlikely(ret != 0)) {
1601                 DRM_ERROR("Failed to get rects.\n");
1602                 ret = -EFAULT;
1603                 goto out_free;
1604         }
1605
1606         for (i = 0; i < arg->num_outputs; ++i) {
1607                 if (rects[i].x < 0 ||
1608                     rects[i].y < 0 ||
1609                     rects[i].x + rects[i].w > mode_config->max_width ||
1610                     rects[i].y + rects[i].h > mode_config->max_height) {
1611                         DRM_ERROR("Invalid GUI layout.\n");
1612                         ret = -EINVAL;
1613                         goto out_free;
1614                 }
1615
1616                 /*
1617                  * bounding_box.w and bunding_box.h are used as
1618                  * lower-right coordinates
1619                  */
1620                 if (rects[i].x + rects[i].w > bounding_box.w)
1621                         bounding_box.w = rects[i].x + rects[i].w;
1622
1623                 if (rects[i].y + rects[i].h > bounding_box.h)
1624                         bounding_box.h = rects[i].y + rects[i].h;
1625         }
1626
1627         /*
1628          * For Screen Target Display Unit, all the displays must fit
1629          * inside of maximum texture size.
1630          */
1631         if (dev_priv->active_display_unit == vmw_du_screen_target)
1632                 if (bounding_box.w > dev_priv->texture_max_width ||
1633                     bounding_box.h > dev_priv->texture_max_height) {
1634                         DRM_ERROR("Layout exceeds maximum texture size\n");
1635                         ret = -EINVAL;
1636                         goto out_free;
1637                 }
1638
1639
1640         vmw_du_update_layout(dev_priv, arg->num_outputs, rects);
1641
1642 out_free:
1643         kfree(rects);
1644         return ret;
1645 }
1646
1647 /**
1648  * vmw_kms_helper_dirty - Helper to build commands and perform actions based
1649  * on a set of cliprects and a set of display units.
1650  *
1651  * @dev_priv: Pointer to a device private structure.
1652  * @framebuffer: Pointer to the framebuffer on which to perform the actions.
1653  * @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL.
1654  * Cliprects are given in framebuffer coordinates.
1655  * @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must
1656  * be NULL. Cliprects are given in source coordinates.
1657  * @dest_x: X coordinate offset for the crtc / destination clip rects.
1658  * @dest_y: Y coordinate offset for the crtc / destination clip rects.
1659  * @num_clips: Number of cliprects in the @clips or @vclips array.
1660  * @increment: Integer with which to increment the clip counter when looping.
1661  * Used to skip a predetermined number of clip rects.
1662  * @dirty: Closure structure. See the description of struct vmw_kms_dirty.
1663  */
1664 int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
1665                          struct vmw_framebuffer *framebuffer,
1666                          const struct drm_clip_rect *clips,
1667                          const struct drm_vmw_rect *vclips,
1668                          s32 dest_x, s32 dest_y,
1669                          int num_clips,
1670                          int increment,
1671                          struct vmw_kms_dirty *dirty)
1672 {
1673         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
1674         struct drm_crtc *crtc;
1675         u32 num_units = 0;
1676         u32 i, k;
1677         int ret;
1678
1679         dirty->dev_priv = dev_priv;
1680
1681         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
1682                 if (crtc->primary->fb != &framebuffer->base)
1683                         continue;
1684                 units[num_units++] = vmw_crtc_to_du(crtc);
1685         }
1686
1687         for (k = 0; k < num_units; k++) {
1688                 struct vmw_display_unit *unit = units[k];
1689                 s32 crtc_x = unit->crtc.x;
1690                 s32 crtc_y = unit->crtc.y;
1691                 s32 crtc_width = unit->crtc.mode.hdisplay;
1692                 s32 crtc_height = unit->crtc.mode.vdisplay;
1693                 const struct drm_clip_rect *clips_ptr = clips;
1694                 const struct drm_vmw_rect *vclips_ptr = vclips;
1695
1696                 dirty->unit = unit;
1697                 if (dirty->fifo_reserve_size > 0) {
1698                         dirty->cmd = vmw_fifo_reserve(dev_priv,
1699                                                       dirty->fifo_reserve_size);
1700                         if (!dirty->cmd) {
1701                                 DRM_ERROR("Couldn't reserve fifo space "
1702                                           "for dirty blits.\n");
1703                                 return ret;
1704                         }
1705                         memset(dirty->cmd, 0, dirty->fifo_reserve_size);
1706                 }
1707                 dirty->num_hits = 0;
1708                 for (i = 0; i < num_clips; i++, clips_ptr += increment,
1709                        vclips_ptr += increment) {
1710                         s32 clip_left;
1711                         s32 clip_top;
1712
1713                         /*
1714                          * Select clip array type. Note that integer type
1715                          * in @clips is unsigned short, whereas in @vclips
1716                          * it's 32-bit.
1717                          */
1718                         if (clips) {
1719                                 dirty->fb_x = (s32) clips_ptr->x1;
1720                                 dirty->fb_y = (s32) clips_ptr->y1;
1721                                 dirty->unit_x2 = (s32) clips_ptr->x2 + dest_x -
1722                                         crtc_x;
1723                                 dirty->unit_y2 = (s32) clips_ptr->y2 + dest_y -
1724                                         crtc_y;
1725                         } else {
1726                                 dirty->fb_x = vclips_ptr->x;
1727                                 dirty->fb_y = vclips_ptr->y;
1728                                 dirty->unit_x2 = dirty->fb_x + vclips_ptr->w +
1729                                         dest_x - crtc_x;
1730                                 dirty->unit_y2 = dirty->fb_y + vclips_ptr->h +
1731                                         dest_y - crtc_y;
1732                         }
1733
1734                         dirty->unit_x1 = dirty->fb_x + dest_x - crtc_x;
1735                         dirty->unit_y1 = dirty->fb_y + dest_y - crtc_y;
1736
1737                         /* Skip this clip if it's outside the crtc region */
1738                         if (dirty->unit_x1 >= crtc_width ||
1739                             dirty->unit_y1 >= crtc_height ||
1740                             dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0)
1741                                 continue;
1742
1743                         /* Clip right and bottom to crtc limits */
1744                         dirty->unit_x2 = min_t(s32, dirty->unit_x2,
1745                                                crtc_width);
1746                         dirty->unit_y2 = min_t(s32, dirty->unit_y2,
1747                                                crtc_height);
1748
1749                         /* Clip left and top to crtc limits */
1750                         clip_left = min_t(s32, dirty->unit_x1, 0);
1751                         clip_top = min_t(s32, dirty->unit_y1, 0);
1752                         dirty->unit_x1 -= clip_left;
1753                         dirty->unit_y1 -= clip_top;
1754                         dirty->fb_x -= clip_left;
1755                         dirty->fb_y -= clip_top;
1756
1757                         dirty->clip(dirty);
1758                 }
1759
1760                 dirty->fifo_commit(dirty);
1761         }
1762
1763         return 0;
1764 }
1765
1766 /**
1767  * vmw_kms_helper_buffer_prepare - Reserve and validate a buffer object before
1768  * command submission.
1769  *
1770  * @dev_priv. Pointer to a device private structure.
1771  * @buf: The buffer object
1772  * @interruptible: Whether to perform waits as interruptible.
1773  * @validate_as_mob: Whether the buffer should be validated as a MOB. If false,
1774  * The buffer will be validated as a GMR. Already pinned buffers will not be
1775  * validated.
1776  *
1777  * Returns 0 on success, negative error code on failure, -ERESTARTSYS if
1778  * interrupted by a signal.
1779  */
1780 int vmw_kms_helper_buffer_prepare(struct vmw_private *dev_priv,
1781                                   struct vmw_dma_buffer *buf,
1782                                   bool interruptible,
1783                                   bool validate_as_mob)
1784 {
1785         struct ttm_buffer_object *bo = &buf->base;
1786         int ret;
1787
1788         ttm_bo_reserve(bo, false, false, interruptible, NULL);
1789         ret = vmw_validate_single_buffer(dev_priv, bo, interruptible,
1790                                          validate_as_mob);
1791         if (ret)
1792                 ttm_bo_unreserve(bo);
1793
1794         return ret;
1795 }
1796
1797 /**
1798  * vmw_kms_helper_buffer_revert - Undo the actions of
1799  * vmw_kms_helper_buffer_prepare.
1800  *
1801  * @res: Pointer to the buffer object.
1802  *
1803  * Helper to be used if an error forces the caller to undo the actions of
1804  * vmw_kms_helper_buffer_prepare.
1805  */
1806 void vmw_kms_helper_buffer_revert(struct vmw_dma_buffer *buf)
1807 {
1808         if (buf)
1809                 ttm_bo_unreserve(&buf->base);
1810 }
1811
1812 /**
1813  * vmw_kms_helper_buffer_finish - Unreserve and fence a buffer object after
1814  * kms command submission.
1815  *
1816  * @dev_priv: Pointer to a device private structure.
1817  * @file_priv: Pointer to a struct drm_file representing the caller's
1818  * connection. Must be set to NULL if @user_fence_rep is NULL, and conversely
1819  * if non-NULL, @user_fence_rep must be non-NULL.
1820  * @buf: The buffer object.
1821  * @out_fence:  Optional pointer to a fence pointer. If non-NULL, a
1822  * ref-counted fence pointer is returned here.
1823  * @user_fence_rep: Optional pointer to a user-space provided struct
1824  * drm_vmw_fence_rep. If provided, @file_priv must also be provided and the
1825  * function copies fence data to user-space in a fail-safe manner.
1826  */
1827 void vmw_kms_helper_buffer_finish(struct vmw_private *dev_priv,
1828                                   struct drm_file *file_priv,
1829                                   struct vmw_dma_buffer *buf,
1830                                   struct vmw_fence_obj **out_fence,
1831                                   struct drm_vmw_fence_rep __user *
1832                                   user_fence_rep)
1833 {
1834         struct vmw_fence_obj *fence;
1835         uint32_t handle;
1836         int ret;
1837
1838         ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
1839                                          file_priv ? &handle : NULL);
1840         if (buf)
1841                 vmw_fence_single_bo(&buf->base, fence);
1842         if (file_priv)
1843                 vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
1844                                             ret, user_fence_rep, fence,
1845                                             handle);
1846         if (out_fence)
1847                 *out_fence = fence;
1848         else
1849                 vmw_fence_obj_unreference(&fence);
1850
1851         vmw_kms_helper_buffer_revert(buf);
1852 }
1853
1854
1855 /**
1856  * vmw_kms_helper_resource_revert - Undo the actions of
1857  * vmw_kms_helper_resource_prepare.
1858  *
1859  * @res: Pointer to the resource. Typically a surface.
1860  *
1861  * Helper to be used if an error forces the caller to undo the actions of
1862  * vmw_kms_helper_resource_prepare.
1863  */
1864 void vmw_kms_helper_resource_revert(struct vmw_resource *res)
1865 {
1866         vmw_kms_helper_buffer_revert(res->backup);
1867         vmw_resource_unreserve(res, NULL, 0);
1868         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1869 }
1870
1871 /**
1872  * vmw_kms_helper_resource_prepare - Reserve and validate a resource before
1873  * command submission.
1874  *
1875  * @res: Pointer to the resource. Typically a surface.
1876  * @interruptible: Whether to perform waits as interruptible.
1877  *
1878  * Reserves and validates also the backup buffer if a guest-backed resource.
1879  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
1880  * interrupted by a signal.
1881  */
1882 int vmw_kms_helper_resource_prepare(struct vmw_resource *res,
1883                                     bool interruptible)
1884 {
1885         int ret = 0;
1886
1887         if (interruptible)
1888                 ret = mutex_lock_interruptible(&res->dev_priv->cmdbuf_mutex);
1889         else
1890                 mutex_lock(&res->dev_priv->cmdbuf_mutex);
1891
1892         if (unlikely(ret != 0))
1893                 return -ERESTARTSYS;
1894
1895         ret = vmw_resource_reserve(res, interruptible, false);
1896         if (ret)
1897                 goto out_unlock;
1898
1899         if (res->backup) {
1900                 ret = vmw_kms_helper_buffer_prepare(res->dev_priv, res->backup,
1901                                                     interruptible,
1902                                                     res->dev_priv->has_mob);
1903                 if (ret)
1904                         goto out_unreserve;
1905         }
1906         ret = vmw_resource_validate(res);
1907         if (ret)
1908                 goto out_revert;
1909         return 0;
1910
1911 out_revert:
1912         vmw_kms_helper_buffer_revert(res->backup);
1913 out_unreserve:
1914         vmw_resource_unreserve(res, NULL, 0);
1915 out_unlock:
1916         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1917         return ret;
1918 }
1919
1920 /**
1921  * vmw_kms_helper_resource_finish - Unreserve and fence a resource after
1922  * kms command submission.
1923  *
1924  * @res: Pointer to the resource. Typically a surface.
1925  * @out_fence: Optional pointer to a fence pointer. If non-NULL, a
1926  * ref-counted fence pointer is returned here.
1927  */
1928 void vmw_kms_helper_resource_finish(struct vmw_resource *res,
1929                              struct vmw_fence_obj **out_fence)
1930 {
1931         if (res->backup || out_fence)
1932                 vmw_kms_helper_buffer_finish(res->dev_priv, NULL, res->backup,
1933                                              out_fence, NULL);
1934
1935         vmw_resource_unreserve(res, NULL, 0);
1936         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1937 }
1938
1939 /**
1940  * vmw_kms_update_proxy - Helper function to update a proxy surface from
1941  * its backing MOB.
1942  *
1943  * @res: Pointer to the surface resource
1944  * @clips: Clip rects in framebuffer (surface) space.
1945  * @num_clips: Number of clips in @clips.
1946  * @increment: Integer with which to increment the clip counter when looping.
1947  * Used to skip a predetermined number of clip rects.
1948  *
1949  * This function makes sure the proxy surface is updated from its backing MOB
1950  * using the region given by @clips. The surface resource @res and its backing
1951  * MOB needs to be reserved and validated on call.
1952  */
1953 int vmw_kms_update_proxy(struct vmw_resource *res,
1954                          const struct drm_clip_rect *clips,
1955                          unsigned num_clips,
1956                          int increment)
1957 {
1958         struct vmw_private *dev_priv = res->dev_priv;
1959         struct drm_vmw_size *size = &vmw_res_to_srf(res)->base_size;
1960         struct {
1961                 SVGA3dCmdHeader header;
1962                 SVGA3dCmdUpdateGBImage body;
1963         } *cmd;
1964         SVGA3dBox *box;
1965         size_t copy_size = 0;
1966         int i;
1967
1968         if (!clips)
1969                 return 0;
1970
1971         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) * num_clips);
1972         if (!cmd) {
1973                 DRM_ERROR("Couldn't reserve fifo space for proxy surface "
1974                           "update.\n");
1975                 return -ENOMEM;
1976         }
1977
1978         for (i = 0; i < num_clips; ++i, clips += increment, ++cmd) {
1979                 box = &cmd->body.box;
1980
1981                 cmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
1982                 cmd->header.size = sizeof(cmd->body);
1983                 cmd->body.image.sid = res->id;
1984                 cmd->body.image.face = 0;
1985                 cmd->body.image.mipmap = 0;
1986
1987                 if (clips->x1 > size->width || clips->x2 > size->width ||
1988                     clips->y1 > size->height || clips->y2 > size->height) {
1989                         DRM_ERROR("Invalid clips outsize of framebuffer.\n");
1990                         return -EINVAL;
1991                 }
1992
1993                 box->x = clips->x1;
1994                 box->y = clips->y1;
1995                 box->z = 0;
1996                 box->w = clips->x2 - clips->x1;
1997                 box->h = clips->y2 - clips->y1;
1998                 box->d = 1;
1999
2000                 copy_size += sizeof(*cmd);
2001         }
2002
2003         vmw_fifo_commit(dev_priv, copy_size);
2004
2005         return 0;
2006 }
2007
2008 int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
2009                             unsigned unit,
2010                             u32 max_width,
2011                             u32 max_height,
2012                             struct drm_connector **p_con,
2013                             struct drm_crtc **p_crtc,
2014                             struct drm_display_mode **p_mode)
2015 {
2016         struct drm_connector *con;
2017         struct vmw_display_unit *du;
2018         struct drm_display_mode *mode;
2019         int i = 0;
2020
2021         list_for_each_entry(con, &dev_priv->dev->mode_config.connector_list,
2022                             head) {
2023                 if (i == unit)
2024                         break;
2025
2026                 ++i;
2027         }
2028
2029         if (i != unit) {
2030                 DRM_ERROR("Could not find initial display unit.\n");
2031                 return -EINVAL;
2032         }
2033
2034         if (list_empty(&con->modes))
2035                 (void) vmw_du_connector_fill_modes(con, max_width, max_height);
2036
2037         if (list_empty(&con->modes)) {
2038                 DRM_ERROR("Could not find initial display mode.\n");
2039                 return -EINVAL;
2040         }
2041
2042         du = vmw_connector_to_du(con);
2043         *p_con = con;
2044         *p_crtc = &du->crtc;
2045
2046         list_for_each_entry(mode, &con->modes, head) {
2047                 if (mode->type & DRM_MODE_TYPE_PREFERRED)
2048                         break;
2049         }
2050
2051         if (mode->type & DRM_MODE_TYPE_PREFERRED)
2052                 *p_mode = mode;
2053         else {
2054                 WARN_ONCE(true, "Could not find initial preferred mode.\n");
2055                 *p_mode = list_first_entry(&con->modes,
2056                                            struct drm_display_mode,
2057                                            head);
2058         }
2059
2060         return 0;
2061 }