drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "vmwgfx_kms.h"
  29
  30
  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_flush(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 *fifo_mem = dev_priv->mmio_virt;
 127         uint32_t count;
 128
 129         vmw_mmio_write(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
 130         vmw_mmio_write(x, fifo_mem + SVGA_FIFO_CURSOR_X);
 131         vmw_mmio_write(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
 132         count = vmw_mmio_read(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 133         vmw_mmio_write(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 134 }
 135
 136
 137 /*
 138  * vmw_du_crtc_cursor_set2 - Driver cursor_set2 callback.
 139  */
 140 int vmw_du_crtc_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
 141                             uint32_t handle, uint32_t width, uint32_t height,
 142                             int32_t hot_x, int32_t hot_y)
 143 {
 144         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 145         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 146         struct vmw_surface *surface = NULL;
 147         struct vmw_dma_buffer *dmabuf = NULL;
 148         s32 hotspot_x, hotspot_y;
 149         int ret;
 150
 151         /*
 152          * FIXME: Unclear whether there's any global state touched by the
 153          * cursor_set function, especially vmw_cursor_update_position looks
 154          * suspicious. For now take the easy route and reacquire all locks. We
 155          * can do this since the caller in the drm core doesn't check anything
 156          * which is protected by any looks.
 157          */
 158         drm_modeset_unlock_crtc(crtc);
 159         drm_modeset_lock_all(dev_priv->dev);
 160         hotspot_x = hot_x + du->hotspot_x;
 161         hotspot_y = hot_y + du->hotspot_y;
 162
 163         /* A lot of the code assumes this */
 164         if (handle && (width != 64 || height != 64)) {
 165                 ret = -EINVAL;
 166                 goto out;
 167         }
 168
 169         if (handle) {
 170                 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 171
 172                 ret = vmw_user_lookup_handle(dev_priv, tfile,
 173                                              handle, &surface, &dmabuf);
 174                 if (ret) {
 175                         DRM_ERROR("failed to find surface or dmabuf: %i\n", ret);
 176                         ret = -EINVAL;
 177                         goto out;
 178                 }
 179         }
 180
 181         /* need to do this before taking down old image */
 182         if (surface && !surface->snooper.image) {
 183                 DRM_ERROR("surface not suitable for cursor\n");
 184                 vmw_surface_unreference(&surface);
 185                 ret = -EINVAL;
 186                 goto out;
 187         }
 188
 189         /* takedown old cursor */
 190         if (du->cursor_surface) {
 191                 du->cursor_surface->snooper.crtc = NULL;
 192                 vmw_surface_unreference(&du->cursor_surface);
 193         }
 194         if (du->cursor_dmabuf)
 195                 vmw_dmabuf_unreference(&du->cursor_dmabuf);
 196
 197         /* setup new image */
 198         ret = 0;
 199         if (surface) {
 200                 /* vmw_user_surface_lookup takes one reference */
 201                 du->cursor_surface = surface;
 202
 203                 du->cursor_surface->snooper.crtc = crtc;
 204                 du->cursor_age = du->cursor_surface->snooper.age;
 205                 ret = vmw_cursor_update_image(dev_priv, surface->snooper.image,
 206                                               64, 64, hotspot_x, hotspot_y);
 207         } else if (dmabuf) {
 208                 /* vmw_user_surface_lookup takes one reference */
 209                 du->cursor_dmabuf = dmabuf;
 210
 211                 ret = vmw_cursor_update_dmabuf(dev_priv, dmabuf, width, height,
 212                                                hotspot_x, hotspot_y);
 213         } else {
 214                 vmw_cursor_update_position(dev_priv, false, 0, 0);
 215                 goto out;
 216         }
 217
 218         if (!ret) {
 219                 vmw_cursor_update_position(dev_priv, true,
 220                                            du->cursor_x + hotspot_x,
 221                                            du->cursor_y + hotspot_y);
 222                 du->core_hotspot_x = hot_x;
 223                 du->core_hotspot_y = hot_y;
 224         }
 225
 226 out:
 227         drm_modeset_unlock_all(dev_priv->dev);
 228         drm_modeset_lock_crtc(crtc, crtc->cursor);
 229
 230         return ret;
 231 }
 232
 233 int vmw_du_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
 234 {
 235         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 236         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 237         bool shown = du->cursor_surface || du->cursor_dmabuf ? true : false;
 238
 239         du->cursor_x = x + crtc->x;
 240         du->cursor_y = y + crtc->y;
 241
 242         /*
 243          * FIXME: Unclear whether there's any global state touched by the
 244          * cursor_set function, especially vmw_cursor_update_position looks
 245          * suspicious. For now take the easy route and reacquire all locks. We
 246          * can do this since the caller in the drm core doesn't check anything
 247          * which is protected by any looks.
 248          */
 249         drm_modeset_unlock_crtc(crtc);
 250         drm_modeset_lock_all(dev_priv->dev);
 251
 252         vmw_cursor_update_position(dev_priv, shown,
 253                                    du->cursor_x + du->hotspot_x +
 254                                    du->core_hotspot_x,
 255                                    du->cursor_y + du->hotspot_y +
 256                                    du->core_hotspot_y);
 257
 258         drm_modeset_unlock_all(dev_priv->dev);
 259         drm_modeset_lock_crtc(crtc, crtc->cursor);
 260
 261         return 0;
 262 }
 263
 264 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
 265                           struct ttm_object_file *tfile,
 266                           struct ttm_buffer_object *bo,
 267                           SVGA3dCmdHeader *header)
 268 {
 269         struct ttm_bo_kmap_obj map;
 270         unsigned long kmap_offset;
 271         unsigned long kmap_num;
 272         SVGA3dCopyBox *box;
 273         unsigned box_count;
 274         void *virtual;
 275         bool dummy;
 276         struct vmw_dma_cmd {
 277                 SVGA3dCmdHeader header;
 278                 SVGA3dCmdSurfaceDMA dma;
 279         } *cmd;
 280         int i, ret;
 281
 282         cmd = container_of(header, struct vmw_dma_cmd, header);
 283
 284         /* No snooper installed */
 285         if (!srf->snooper.image)
 286                 return;
 287
 288         if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
 289                 DRM_ERROR("face and mipmap for cursors should never != 0\n");
 290                 return;
 291         }
 292
 293         if (cmd->header.size < 64) {
 294                 DRM_ERROR("at least one full copy box must be given\n");
 295                 return;
 296         }
 297
 298         box = (SVGA3dCopyBox *)&cmd[1];
 299         box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
 300                         sizeof(SVGA3dCopyBox);
 301
 302         if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
 303             box->x != 0    || box->y != 0    || box->z != 0    ||
 304             box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
 305             box->d != 1    || box_count != 1) {
 306                 /* TODO handle none page aligned offsets */
 307                 /* TODO handle more dst & src != 0 */
 308                 /* TODO handle more then one copy */
 309                 DRM_ERROR("Cant snoop dma request for cursor!\n");
 310                 DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
 311                           box->srcx, box->srcy, box->srcz,
 312                           box->x, box->y, box->z,
 313                           box->w, box->h, box->d, box_count,
 314                           cmd->dma.guest.ptr.offset);
 315                 return;
 316         }
 317
 318         kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
 319         kmap_num = (64*64*4) >> PAGE_SHIFT;
 320
 321         ret = ttm_bo_reserve(bo, true, false, false, NULL);
 322         if (unlikely(ret != 0)) {
 323                 DRM_ERROR("reserve failed\n");
 324                 return;
 325         }
 326
 327         ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
 328         if (unlikely(ret != 0))
 329                 goto err_unreserve;
 330
 331         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 332
 333         if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
 334                 memcpy(srf->snooper.image, virtual, 64*64*4);
 335         } else {
 336                 /* Image is unsigned pointer. */
 337                 for (i = 0; i < box->h; i++)
 338                         memcpy(srf->snooper.image + i * 64,
 339                                virtual + i * cmd->dma.guest.pitch,
 340                                box->w * 4);
 341         }
 342
 343         srf->snooper.age++;
 344
 345         ttm_bo_kunmap(&map);
 346 err_unreserve:
 347         ttm_bo_unreserve(bo);
 348 }
 349
 350 /**
 351  * vmw_kms_legacy_hotspot_clear - Clear legacy hotspots
 352  *
 353  * @dev_priv: Pointer to the device private struct.
 354  *
 355  * Clears all legacy hotspots.
 356  */
 357 void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv)
 358 {
 359         struct drm_device *dev = dev_priv->dev;
 360         struct vmw_display_unit *du;
 361         struct drm_crtc *crtc;
 362
 363         drm_modeset_lock_all(dev);
 364         drm_for_each_crtc(crtc, dev) {
 365                 du = vmw_crtc_to_du(crtc);
 366
 367                 du->hotspot_x = 0;
 368                 du->hotspot_y = 0;
 369         }
 370         drm_modeset_unlock_all(dev);
 371 }
 372
 373 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
 374 {
 375         struct drm_device *dev = dev_priv->dev;
 376         struct vmw_display_unit *du;
 377         struct drm_crtc *crtc;
 378
 379         mutex_lock(&dev->mode_config.mutex);
 380
 381         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 382                 du = vmw_crtc_to_du(crtc);
 383                 if (!du->cursor_surface ||
 384                     du->cursor_age == du->cursor_surface->snooper.age)
 385                         continue;
 386
 387                 du->cursor_age = du->cursor_surface->snooper.age;
 388                 vmw_cursor_update_image(dev_priv,
 389                                         du->cursor_surface->snooper.image,
 390                                         64, 64,
 391                                         du->hotspot_x + du->core_hotspot_x,
 392                                         du->hotspot_y + du->core_hotspot_y);
 393         }
 394
 395         mutex_unlock(&dev->mode_config.mutex);
 396 }
 397
 398 /*
 399  * Generic framebuffer code
 400  */
 401
 402 /*
 403  * Surface framebuffer code
 404  */
 405
 406 static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
 407 {
 408         struct vmw_framebuffer_surface *vfbs =
 409                 vmw_framebuffer_to_vfbs(framebuffer);
 410
 411         drm_framebuffer_cleanup(framebuffer);
 412         vmw_surface_unreference(&vfbs->surface);
 413         if (vfbs->base.user_obj)
 414                 ttm_base_object_unref(&vfbs->base.user_obj);
 415
 416         kfree(vfbs);
 417 }
 418
 419 static int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
 420                                   struct drm_file *file_priv,
 421                                   unsigned flags, unsigned color,
 422                                   struct drm_clip_rect *clips,
 423                                   unsigned num_clips)
 424 {
 425         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 426         struct vmw_framebuffer_surface *vfbs =
 427                 vmw_framebuffer_to_vfbs(framebuffer);
 428         struct drm_clip_rect norect;
 429         int ret, inc = 1;
 430
 431         /* Legacy Display Unit does not support 3D */
 432         if (dev_priv->active_display_unit == vmw_du_legacy)
 433                 return -EINVAL;
 434
 435         drm_modeset_lock_all(dev_priv->dev);
 436
 437         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 438         if (unlikely(ret != 0)) {
 439                 drm_modeset_unlock_all(dev_priv->dev);
 440                 return ret;
 441         }
 442
 443         if (!num_clips) {
 444                 num_clips = 1;
 445                 clips = &norect;
 446                 norect.x1 = norect.y1 = 0;
 447                 norect.x2 = framebuffer->width;
 448                 norect.y2 = framebuffer->height;
 449         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 450                 num_clips /= 2;
 451                 inc = 2; /* skip source rects */
 452         }
 453
 454         if (dev_priv->active_display_unit == vmw_du_screen_object)
 455                 ret = vmw_kms_sou_do_surface_dirty(dev_priv, &vfbs->base,
 456                                                    clips, NULL, NULL, 0, 0,
 457                                                    num_clips, inc, NULL);
 458         else
 459                 ret = vmw_kms_stdu_surface_dirty(dev_priv, &vfbs->base,
 460                                                  clips, NULL, NULL, 0, 0,
 461                                                  num_clips, inc, NULL);
 462
 463         vmw_fifo_flush(dev_priv, false);
 464         ttm_read_unlock(&dev_priv->reservation_sem);
 465
 466         drm_modeset_unlock_all(dev_priv->dev);
 467
 468         return 0;
 469 }
 470
 471 /**
 472  * vmw_kms_readback - Perform a readback from the screen system to
 473  * a dma-buffer backed framebuffer.
 474  *
 475  * @dev_priv: Pointer to the device private structure.
 476  * @file_priv: Pointer to a struct drm_file identifying the caller.
 477  * Must be set to NULL if @user_fence_rep is NULL.
 478  * @vfb: Pointer to the dma-buffer backed framebuffer.
 479  * @user_fence_rep: User-space provided structure for fence information.
 480  * Must be set to non-NULL if @file_priv is non-NULL.
 481  * @vclips: Array of clip rects.
 482  * @num_clips: Number of clip rects in @vclips.
 483  *
 484  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 485  * interrupted.
 486  */
 487 int vmw_kms_readback(struct vmw_private *dev_priv,
 488                      struct drm_file *file_priv,
 489                      struct vmw_framebuffer *vfb,
 490                      struct drm_vmw_fence_rep __user *user_fence_rep,
 491                      struct drm_vmw_rect *vclips,
 492                      uint32_t num_clips)
 493 {
 494         switch (dev_priv->active_display_unit) {
 495         case vmw_du_screen_object:
 496                 return vmw_kms_sou_readback(dev_priv, file_priv, vfb,
 497                                             user_fence_rep, vclips, num_clips);
 498         case vmw_du_screen_target:
 499                 return vmw_kms_stdu_dma(dev_priv, file_priv, vfb,
 500                                         user_fence_rep, NULL, vclips, num_clips,
 501                                         1, false, true);
 502         default:
 503                 WARN_ONCE(true,
 504                           "Readback called with invalid display system.\n");
 505 }
 506
 507         return -ENOSYS;
 508 }
 509
 510
 511 static struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
 512         .destroy = vmw_framebuffer_surface_destroy,
 513         .dirty = vmw_framebuffer_surface_dirty,
 514 };
 515
 516 static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
 517                                            struct vmw_surface *surface,
 518                                            struct vmw_framebuffer **out,
 519                                            const struct drm_mode_fb_cmd
 520                                            *mode_cmd,
 521                                            bool is_dmabuf_proxy)
 522
 523 {
 524         struct drm_device *dev = dev_priv->dev;
 525         struct vmw_framebuffer_surface *vfbs;
 526         enum SVGA3dSurfaceFormat format;
 527         int ret;
 528
 529         /* 3D is only supported on HWv8 and newer hosts */
 530         if (dev_priv->active_display_unit == vmw_du_legacy)
 531                 return -ENOSYS;
 532
 533         /*
 534          * Sanity checks.
 535          */
 536
 537         /* Surface must be marked as a scanout. */
 538         if (unlikely(!surface->scanout))
 539                 return -EINVAL;
 540
 541         if (unlikely(surface->mip_levels[0] != 1 ||
 542                      surface->num_sizes != 1 ||
 543                      surface->base_size.width < mode_cmd->width ||
 544                      surface->base_size.height < mode_cmd->height ||
 545                      surface->base_size.depth != 1)) {
 546                 DRM_ERROR("Incompatible surface dimensions "
 547                           "for requested mode.\n");
 548                 return -EINVAL;
 549         }
 550
 551         switch (mode_cmd->depth) {
 552         case 32:
 553                 format = SVGA3D_A8R8G8B8;
 554                 break;
 555         case 24:
 556                 format = SVGA3D_X8R8G8B8;
 557                 break;
 558         case 16:
 559                 format = SVGA3D_R5G6B5;
 560                 break;
 561         case 15:
 562                 format = SVGA3D_A1R5G5B5;
 563                 break;
 564         default:
 565                 DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 566                 return -EINVAL;
 567         }
 568
 569         /*
 570          * For DX, surface format validation is done when surface->scanout
 571          * is set.
 572          */
 573         if (!dev_priv->has_dx && format != surface->format) {
 574                 DRM_ERROR("Invalid surface format for requested mode.\n");
 575                 return -EINVAL;
 576         }
 577
 578         vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
 579         if (!vfbs) {
 580                 ret = -ENOMEM;
 581                 goto out_err1;
 582         }
 583
 584         /* XXX get the first 3 from the surface info */
 585         vfbs->base.base.bits_per_pixel = mode_cmd->bpp;
 586         vfbs->base.base.pitches[0] = mode_cmd->pitch;
 587         vfbs->base.base.depth = mode_cmd->depth;
 588         vfbs->base.base.width = mode_cmd->width;
 589         vfbs->base.base.height = mode_cmd->height;
 590         vfbs->surface = vmw_surface_reference(surface);
 591         vfbs->base.user_handle = mode_cmd->handle;
 592         vfbs->is_dmabuf_proxy = is_dmabuf_proxy;
 593
 594         *out = &vfbs->base;
 595
 596         ret = drm_framebuffer_init(dev, &vfbs->base.base,
 597                                    &vmw_framebuffer_surface_funcs);
 598         if (ret)
 599                 goto out_err2;
 600
 601         return 0;
 602
 603 out_err2:
 604         vmw_surface_unreference(&surface);
 605         kfree(vfbs);
 606 out_err1:
 607         return ret;
 608 }
 609
 610 /*
 611  * Dmabuf framebuffer code
 612  */
 613
 614 static void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
 615 {
 616         struct vmw_framebuffer_dmabuf *vfbd =
 617                 vmw_framebuffer_to_vfbd(framebuffer);
 618
 619         drm_framebuffer_cleanup(framebuffer);
 620         vmw_dmabuf_unreference(&vfbd->buffer);
 621         if (vfbd->base.user_obj)
 622                 ttm_base_object_unref(&vfbd->base.user_obj);
 623
 624         kfree(vfbd);
 625 }
 626
 627 static int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
 628                                  struct drm_file *file_priv,
 629                                  unsigned flags, unsigned color,
 630                                  struct drm_clip_rect *clips,
 631                                  unsigned num_clips)
 632 {
 633         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 634         struct vmw_framebuffer_dmabuf *vfbd =
 635                 vmw_framebuffer_to_vfbd(framebuffer);
 636         struct drm_clip_rect norect;
 637         int ret, increment = 1;
 638
 639         drm_modeset_lock_all(dev_priv->dev);
 640
 641         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 642         if (unlikely(ret != 0)) {
 643                 drm_modeset_unlock_all(dev_priv->dev);
 644                 return ret;
 645         }
 646
 647         if (!num_clips) {
 648                 num_clips = 1;
 649                 clips = &norect;
 650                 norect.x1 = norect.y1 = 0;
 651                 norect.x2 = framebuffer->width;
 652                 norect.y2 = framebuffer->height;
 653         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 654                 num_clips /= 2;
 655                 increment = 2;
 656         }
 657
 658         switch (dev_priv->active_display_unit) {
 659         case vmw_du_screen_target:
 660                 ret = vmw_kms_stdu_dma(dev_priv, NULL, &vfbd->base, NULL,
 661                                        clips, NULL, num_clips, increment,
 662                                        true, true);
 663                 break;
 664         case vmw_du_screen_object:
 665                 ret = vmw_kms_sou_do_dmabuf_dirty(dev_priv, &vfbd->base,
 666                                                   clips, num_clips, increment,
 667                                                   true,
 668                                                   NULL);
 669                 break;
 670         case vmw_du_legacy:
 671                 ret = vmw_kms_ldu_do_dmabuf_dirty(dev_priv, &vfbd->base, 0, 0,
 672                                                   clips, num_clips, increment);
 673                 break;
 674         default:
 675                 ret = -EINVAL;
 676                 WARN_ONCE(true, "Dirty called with invalid display system.\n");
 677                 break;
 678         }
 679
 680         vmw_fifo_flush(dev_priv, false);
 681         ttm_read_unlock(&dev_priv->reservation_sem);
 682
 683         drm_modeset_unlock_all(dev_priv->dev);
 684
 685         return ret;
 686 }
 687
 688 static struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
 689         .destroy = vmw_framebuffer_dmabuf_destroy,
 690         .dirty = vmw_framebuffer_dmabuf_dirty,
 691 };
 692
 693 /**
 694  * Pin the dmabuffer to the start of vram.
 695  */
 696 static int vmw_framebuffer_pin(struct vmw_framebuffer *vfb)
 697 {
 698         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 699         struct vmw_dma_buffer *buf;
 700         int ret;
 701
 702         buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
 703                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
 704
 705         if (!buf)
 706                 return 0;
 707
 708         switch (dev_priv->active_display_unit) {
 709         case vmw_du_legacy:
 710                 vmw_overlay_pause_all(dev_priv);
 711                 ret = vmw_dmabuf_pin_in_start_of_vram(dev_priv, buf, false);
 712                 vmw_overlay_resume_all(dev_priv);
 713                 break;
 714         case vmw_du_screen_object:
 715         case vmw_du_screen_target:
 716                 if (vfb->dmabuf)
 717                         return vmw_dmabuf_pin_in_vram_or_gmr(dev_priv, buf,
 718                                                              false);
 719
 720                 return vmw_dmabuf_pin_in_placement(dev_priv, buf,
 721                                                    &vmw_mob_placement, false);
 722         default:
 723                 return -EINVAL;
 724         }
 725
 726         return ret;
 727 }
 728
 729 static int vmw_framebuffer_unpin(struct vmw_framebuffer *vfb)
 730 {
 731         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 732         struct vmw_dma_buffer *buf;
 733
 734         buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
 735                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
 736
 737         if (WARN_ON(!buf))
 738                 return 0;
 739
 740         return vmw_dmabuf_unpin(dev_priv, buf, false);
 741 }
 742
 743 /**
 744  * vmw_create_dmabuf_proxy - create a proxy surface for the DMA buf
 745  *
 746  * @dev: DRM device
 747  * @mode_cmd: parameters for the new surface
 748  * @dmabuf_mob: MOB backing the DMA buf
 749  * @srf_out: newly created surface
 750  *
 751  * When the content FB is a DMA buf, we create a surface as a proxy to the
 752  * same buffer.  This way we can do a surface copy rather than a surface DMA.
 753  * This is a more efficient approach
 754  *
 755  * RETURNS:
 756  * 0 on success, error code otherwise
 757  */
 758 static int vmw_create_dmabuf_proxy(struct drm_device *dev,
 759                                    const struct drm_mode_fb_cmd *mode_cmd,
 760                                    struct vmw_dma_buffer *dmabuf_mob,
 761                                    struct vmw_surface **srf_out)
 762 {
 763         uint32_t format;
 764         struct drm_vmw_size content_base_size;
 765         struct vmw_resource *res;
 766         int ret;
 767
 768         switch (mode_cmd->depth) {
 769         case 32:
 770         case 24:
 771                 format = SVGA3D_X8R8G8B8;
 772                 break;
 773
 774         case 16:
 775         case 15:
 776                 format = SVGA3D_R5G6B5;
 777                 break;
 778
 779         case 8:
 780                 format = SVGA3D_P8;
 781                 break;
 782
 783         default:
 784                 DRM_ERROR("Invalid framebuffer format %d\n", mode_cmd->depth);
 785                 return -EINVAL;
 786         }
 787
 788         content_base_size.width  = mode_cmd->width;
 789         content_base_size.height = mode_cmd->height;
 790         content_base_size.depth  = 1;
 791
 792         ret = vmw_surface_gb_priv_define(dev,
 793                         0, /* kernel visible only */
 794                         0, /* flags */
 795                         format,
 796                         true, /* can be a scanout buffer */
 797                         1, /* num of mip levels */
 798                         0,
 799                         0,
 800                         content_base_size,
 801                         srf_out);
 802         if (ret) {
 803                 DRM_ERROR("Failed to allocate proxy content buffer\n");
 804                 return ret;
 805         }
 806
 807         res = &(*srf_out)->res;
 808
 809         /* Reserve and switch the backing mob. */
 810         mutex_lock(&res->dev_priv->cmdbuf_mutex);
 811         (void) vmw_resource_reserve(res, false, true);
 812         vmw_dmabuf_unreference(&res->backup);
 813         res->backup = vmw_dmabuf_reference(dmabuf_mob);
 814         res->backup_offset = 0;
 815         vmw_resource_unreserve(res, false, NULL, 0);
 816         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
 817
 818         return 0;
 819 }
 820
 821
 822
 823 static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
 824                                           struct vmw_dma_buffer *dmabuf,
 825                                           struct vmw_framebuffer **out,
 826                                           const struct drm_mode_fb_cmd
 827                                           *mode_cmd)
 828
 829 {
 830         struct drm_device *dev = dev_priv->dev;
 831         struct vmw_framebuffer_dmabuf *vfbd;
 832         unsigned int requested_size;
 833         int ret;
 834
 835         requested_size = mode_cmd->height * mode_cmd->pitch;
 836         if (unlikely(requested_size > dmabuf->base.num_pages * PAGE_SIZE)) {
 837                 DRM_ERROR("Screen buffer object size is too small "
 838                           "for requested mode.\n");
 839                 return -EINVAL;
 840         }
 841
 842         /* Limited framebuffer color depth support for screen objects */
 843         if (dev_priv->active_display_unit == vmw_du_screen_object) {
 844                 switch (mode_cmd->depth) {
 845                 case 32:
 846                 case 24:
 847                         /* Only support 32 bpp for 32 and 24 depth fbs */
 848                         if (mode_cmd->bpp == 32)
 849                                 break;
 850
 851                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 852                                   mode_cmd->depth, mode_cmd->bpp);
 853                         return -EINVAL;
 854                 case 16:
 855                 case 15:
 856                         /* Only support 16 bpp for 16 and 15 depth fbs */
 857                         if (mode_cmd->bpp == 16)
 858                                 break;
 859
 860                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 861                                   mode_cmd->depth, mode_cmd->bpp);
 862                         return -EINVAL;
 863                 default:
 864                         DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 865                         return -EINVAL;
 866                 }
 867         }
 868
 869         vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
 870         if (!vfbd) {
 871                 ret = -ENOMEM;
 872                 goto out_err1;
 873         }
 874
 875         vfbd->base.base.bits_per_pixel = mode_cmd->bpp;
 876         vfbd->base.base.pitches[0] = mode_cmd->pitch;
 877         vfbd->base.base.depth = mode_cmd->depth;
 878         vfbd->base.base.width = mode_cmd->width;
 879         vfbd->base.base.height = mode_cmd->height;
 880         vfbd->base.dmabuf = true;
 881         vfbd->buffer = vmw_dmabuf_reference(dmabuf);
 882         vfbd->base.user_handle = mode_cmd->handle;
 883         *out = &vfbd->base;
 884
 885         ret = drm_framebuffer_init(dev, &vfbd->base.base,
 886                                    &vmw_framebuffer_dmabuf_funcs);
 887         if (ret)
 888                 goto out_err2;
 889
 890         return 0;
 891
 892 out_err2:
 893         vmw_dmabuf_unreference(&dmabuf);
 894         kfree(vfbd);
 895 out_err1:
 896         return ret;
 897 }
 898
 899 /**
 900  * vmw_kms_new_framebuffer - Create a new framebuffer.
 901  *
 902  * @dev_priv: Pointer to device private struct.
 903  * @dmabuf: Pointer to dma buffer to wrap the kms framebuffer around.
 904  * Either @dmabuf or @surface must be NULL.
 905  * @surface: Pointer to a surface to wrap the kms framebuffer around.
 906  * Either @dmabuf or @surface must be NULL.
 907  * @only_2d: No presents will occur to this dma buffer based framebuffer. This
 908  * Helps the code to do some important optimizations.
 909  * @mode_cmd: Frame-buffer metadata.
 910  */
 911 struct vmw_framebuffer *
 912 vmw_kms_new_framebuffer(struct vmw_private *dev_priv,
 913                         struct vmw_dma_buffer *dmabuf,
 914                         struct vmw_surface *surface,
 915                         bool only_2d,
 916                         const struct drm_mode_fb_cmd *mode_cmd)
 917 {
 918         struct vmw_framebuffer *vfb = NULL;
 919         bool is_dmabuf_proxy = false;
 920         int ret;
 921
 922         /*
 923          * We cannot use the SurfaceDMA command in an non-accelerated VM,
 924          * therefore, wrap the DMA buf in a surface so we can use the
 925          * SurfaceCopy command.
 926          */
 927         if (dmabuf && only_2d &&
 928             dev_priv->active_display_unit == vmw_du_screen_target) {
 929                 ret = vmw_create_dmabuf_proxy(dev_priv->dev, mode_cmd,
 930                                               dmabuf, &surface);
 931                 if (ret)
 932                         return ERR_PTR(ret);
 933
 934                 is_dmabuf_proxy = true;
 935         }
 936
 937         /* Create the new framebuffer depending one what we have */
 938         if (surface) {
 939                 ret = vmw_kms_new_framebuffer_surface(dev_priv, surface, &vfb,
 940                                                       mode_cmd,
 941                                                       is_dmabuf_proxy);
 942
 943                 /*
 944                  * vmw_create_dmabuf_proxy() adds a reference that is no longer
 945                  * needed
 946                  */
 947                 if (is_dmabuf_proxy)
 948                         vmw_surface_unreference(&surface);
 949         } else if (dmabuf) {
 950                 ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, dmabuf, &vfb,
 951                                                      mode_cmd);
 952         } else {
 953                 BUG();
 954         }
 955
 956         if (ret)
 957                 return ERR_PTR(ret);
 958
 959         vfb->pin = vmw_framebuffer_pin;
 960         vfb->unpin = vmw_framebuffer_unpin;
 961
 962         return vfb;
 963 }
 964
 965 /*
 966  * Generic Kernel modesetting functions
 967  */
 968
 969 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
 970                                                  struct drm_file *file_priv,
 971                                                  const struct drm_mode_fb_cmd2 *mode_cmd2)
 972 {
 973         struct vmw_private *dev_priv = vmw_priv(dev);
 974         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 975         struct vmw_framebuffer *vfb = NULL;
 976         struct vmw_surface *surface = NULL;
 977         struct vmw_dma_buffer *bo = NULL;
 978         struct ttm_base_object *user_obj;
 979         struct drm_mode_fb_cmd mode_cmd;
 980         int ret;
 981
 982         mode_cmd.width = mode_cmd2->width;
 983         mode_cmd.height = mode_cmd2->height;
 984         mode_cmd.pitch = mode_cmd2->pitches[0];
 985         mode_cmd.handle = mode_cmd2->handles[0];
 986         drm_fb_get_bpp_depth(mode_cmd2->pixel_format, &mode_cmd.depth,
 987                                     &mode_cmd.bpp);
 988
 989         /**
 990          * This code should be conditioned on Screen Objects not being used.
 991          * If screen objects are used, we can allocate a GMR to hold the
 992          * requested framebuffer.
 993          */
 994
 995         if (!vmw_kms_validate_mode_vram(dev_priv,
 996                                         mode_cmd.pitch,
 997                                         mode_cmd.height)) {
 998                 DRM_ERROR("Requested mode exceed bounding box limit.\n");
 999                 return ERR_PTR(-ENOMEM);
1000         }
1001
1002         /*
1003          * Take a reference on the user object of the resource
1004          * backing the kms fb. This ensures that user-space handle
1005          * lookups on that resource will always work as long as
1006          * it's registered with a kms framebuffer. This is important,
1007          * since vmw_execbuf_process identifies resources in the
1008          * command stream using user-space handles.
1009          */
1010
1011         user_obj = ttm_base_object_lookup(tfile, mode_cmd.handle);
1012         if (unlikely(user_obj == NULL)) {
1013                 DRM_ERROR("Could not locate requested kms frame buffer.\n");
1014                 return ERR_PTR(-ENOENT);
1015         }
1016
1017         /**
1018          * End conditioned code.
1019          */
1020
1021         /* returns either a dmabuf or surface */
1022         ret = vmw_user_lookup_handle(dev_priv, tfile,
1023                                      mode_cmd.handle,
1024                                      &surface, &bo);
1025         if (ret)
1026                 goto err_out;
1027
1028         vfb = vmw_kms_new_framebuffer(dev_priv, bo, surface,
1029                                       !(dev_priv->capabilities & SVGA_CAP_3D),
1030                                       &mode_cmd);
1031         if (IS_ERR(vfb)) {
1032                 ret = PTR_ERR(vfb);
1033                 goto err_out;
1034         }
1035
1036 err_out:
1037         /* vmw_user_lookup_handle takes one ref so does new_fb */
1038         if (bo)
1039                 vmw_dmabuf_unreference(&bo);
1040         if (surface)
1041                 vmw_surface_unreference(&surface);
1042
1043         if (ret) {
1044                 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1045                 ttm_base_object_unref(&user_obj);
1046                 return ERR_PTR(ret);
1047         } else
1048                 vfb->user_obj = user_obj;
1049
1050         return &vfb->base;
1051 }
1052
1053 static const struct drm_mode_config_funcs vmw_kms_funcs = {
1054         .fb_create = vmw_kms_fb_create,
1055 };
1056
1057 static int vmw_kms_generic_present(struct vmw_private *dev_priv,
1058                                    struct drm_file *file_priv,
1059                                    struct vmw_framebuffer *vfb,
1060                                    struct vmw_surface *surface,
1061                                    uint32_t sid,
1062                                    int32_t destX, int32_t destY,
1063                                    struct drm_vmw_rect *clips,
1064                                    uint32_t num_clips)
1065 {
1066         return vmw_kms_sou_do_surface_dirty(dev_priv, vfb, NULL, clips,
1067                                             &surface->res, destX, destY,
1068                                             num_clips, 1, NULL);
1069 }
1070
1071
1072 int vmw_kms_present(struct vmw_private *dev_priv,
1073                     struct drm_file *file_priv,
1074                     struct vmw_framebuffer *vfb,
1075                     struct vmw_surface *surface,
1076                     uint32_t sid,
1077                     int32_t destX, int32_t destY,
1078                     struct drm_vmw_rect *clips,
1079                     uint32_t num_clips)
1080 {
1081         int ret;
1082
1083         switch (dev_priv->active_display_unit) {
1084         case vmw_du_screen_target:
1085                 ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, clips,
1086                                                  &surface->res, destX, destY,
1087                                                  num_clips, 1, NULL);
1088                 break;
1089         case vmw_du_screen_object:
1090                 ret = vmw_kms_generic_present(dev_priv, file_priv, vfb, surface,
1091                                               sid, destX, destY, clips,
1092                                               num_clips);
1093                 break;
1094         default:
1095                 WARN_ONCE(true,
1096                           "Present called with invalid display system.\n");
1097                 ret = -ENOSYS;
1098                 break;
1099         }
1100         if (ret)
1101                 return ret;
1102
1103         vmw_fifo_flush(dev_priv, false);
1104
1105         return 0;
1106 }
1107
1108 int vmw_kms_init(struct vmw_private *dev_priv)
1109 {
1110         struct drm_device *dev = dev_priv->dev;
1111         int ret;
1112
1113         drm_mode_config_init(dev);
1114         dev->mode_config.funcs = &vmw_kms_funcs;
1115         dev->mode_config.min_width = 1;
1116         dev->mode_config.min_height = 1;
1117         dev->mode_config.max_width = dev_priv->texture_max_width;
1118         dev->mode_config.max_height = dev_priv->texture_max_height;
1119
1120         ret = vmw_kms_stdu_init_display(dev_priv);
1121         if (ret) {
1122                 ret = vmw_kms_sou_init_display(dev_priv);
1123                 if (ret) /* Fallback */
1124                         ret = vmw_kms_ldu_init_display(dev_priv);
1125         }
1126
1127         return ret;
1128 }
1129
1130 int vmw_kms_close(struct vmw_private *dev_priv)
1131 {
1132         int ret;
1133
1134         /*
1135          * Docs says we should take the lock before calling this function
1136          * but since it destroys encoders and our destructor calls
1137          * drm_encoder_cleanup which takes the lock we deadlock.
1138          */
1139         drm_mode_config_cleanup(dev_priv->dev);
1140         if (dev_priv->active_display_unit == vmw_du_screen_object)
1141                 ret = vmw_kms_sou_close_display(dev_priv);
1142         else if (dev_priv->active_display_unit == vmw_du_screen_target)
1143                 ret = vmw_kms_stdu_close_display(dev_priv);
1144         else
1145                 ret = vmw_kms_ldu_close_display(dev_priv);
1146
1147         return ret;
1148 }
1149
1150 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1151                                 struct drm_file *file_priv)
1152 {
1153         struct drm_vmw_cursor_bypass_arg *arg = data;
1154         struct vmw_display_unit *du;
1155         struct drm_crtc *crtc;
1156         int ret = 0;
1157
1158
1159         mutex_lock(&dev->mode_config.mutex);
1160         if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1161
1162                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1163                         du = vmw_crtc_to_du(crtc);
1164                         du->hotspot_x = arg->xhot;
1165                         du->hotspot_y = arg->yhot;
1166                 }
1167
1168                 mutex_unlock(&dev->mode_config.mutex);
1169                 return 0;
1170         }
1171
1172         crtc = drm_crtc_find(dev, arg->crtc_id);
1173         if (!crtc) {
1174                 ret = -ENOENT;
1175                 goto out;
1176         }
1177
1178         du = vmw_crtc_to_du(crtc);
1179
1180         du->hotspot_x = arg->xhot;
1181         du->hotspot_y = arg->yhot;
1182
1183 out:
1184         mutex_unlock(&dev->mode_config.mutex);
1185
1186         return ret;
1187 }
1188
1189 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1190                         unsigned width, unsigned height, unsigned pitch,
1191                         unsigned bpp, unsigned depth)
1192 {
1193         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1194                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1195         else if (vmw_fifo_have_pitchlock(vmw_priv))
1196                 vmw_mmio_write(pitch, vmw_priv->mmio_virt +
1197                                SVGA_FIFO_PITCHLOCK);
1198         vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1199         vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1200         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1201
1202         if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1203                 DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1204                           depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1205                 return -EINVAL;
1206         }
1207
1208         return 0;
1209 }
1210
1211 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1212 {
1213         struct vmw_vga_topology_state *save;
1214         uint32_t i;
1215
1216         vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1217         vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1218         vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1219         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1220                 vmw_priv->vga_pitchlock =
1221                   vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1222         else if (vmw_fifo_have_pitchlock(vmw_priv))
1223                 vmw_priv->vga_pitchlock = vmw_mmio_read(vmw_priv->mmio_virt +
1224                                                         SVGA_FIFO_PITCHLOCK);
1225
1226         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1227                 return 0;
1228
1229         vmw_priv->num_displays = vmw_read(vmw_priv,
1230                                           SVGA_REG_NUM_GUEST_DISPLAYS);
1231
1232         if (vmw_priv->num_displays == 0)
1233                 vmw_priv->num_displays = 1;
1234
1235         for (i = 0; i < vmw_priv->num_displays; ++i) {
1236                 save = &vmw_priv->vga_save[i];
1237                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1238                 save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1239                 save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1240                 save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1241                 save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1242                 save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1243                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1244                 if (i == 0 && vmw_priv->num_displays == 1 &&
1245                     save->width == 0 && save->height == 0) {
1246
1247                         /*
1248                          * It should be fairly safe to assume that these
1249                          * values are uninitialized.
1250                          */
1251
1252                         save->width = vmw_priv->vga_width - save->pos_x;
1253                         save->height = vmw_priv->vga_height - save->pos_y;
1254                 }
1255         }
1256
1257         return 0;
1258 }
1259
1260 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1261 {
1262         struct vmw_vga_topology_state *save;
1263         uint32_t i;
1264
1265         vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1266         vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1267         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1268         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1269                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1270                           vmw_priv->vga_pitchlock);
1271         else if (vmw_fifo_have_pitchlock(vmw_priv))
1272                 vmw_mmio_write(vmw_priv->vga_pitchlock,
1273                                vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1274
1275         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1276                 return 0;
1277
1278         for (i = 0; i < vmw_priv->num_displays; ++i) {
1279                 save = &vmw_priv->vga_save[i];
1280                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1281                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1282                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1283                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1284                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1285                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1286                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1287         }
1288
1289         return 0;
1290 }
1291
1292 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1293                                 uint32_t pitch,
1294                                 uint32_t height)
1295 {
1296         return ((u64) pitch * (u64) height) < (u64)
1297                 ((dev_priv->active_display_unit == vmw_du_screen_target) ?
1298                  dev_priv->prim_bb_mem : dev_priv->vram_size);
1299 }
1300
1301
1302 /**
1303  * Function called by DRM code called with vbl_lock held.
1304  */
1305 u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
1306 {
1307         return 0;
1308 }
1309
1310 /**
1311  * Function called by DRM code called with vbl_lock held.
1312  */
1313 int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe)
1314 {
1315         return -ENOSYS;
1316 }
1317
1318 /**
1319  * Function called by DRM code called with vbl_lock held.
1320  */
1321 void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe)
1322 {
1323 }
1324
1325
1326 /*
1327  * Small shared kms functions.
1328  */
1329
1330 static int vmw_du_update_layout(struct vmw_private *dev_priv, unsigned num,
1331                          struct drm_vmw_rect *rects)
1332 {
1333         struct drm_device *dev = dev_priv->dev;
1334         struct vmw_display_unit *du;
1335         struct drm_connector *con;
1336
1337         mutex_lock(&dev->mode_config.mutex);
1338
1339 #if 0
1340         {
1341                 unsigned int i;
1342
1343                 DRM_INFO("%s: new layout ", __func__);
1344                 for (i = 0; i < num; i++)
1345                         DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
1346                                  rects[i].w, rects[i].h);
1347                 DRM_INFO("\n");
1348         }
1349 #endif
1350
1351         list_for_each_entry(con, &dev->mode_config.connector_list, head) {
1352                 du = vmw_connector_to_du(con);
1353                 if (num > du->unit) {
1354                         du->pref_width = rects[du->unit].w;
1355                         du->pref_height = rects[du->unit].h;
1356                         du->pref_active = true;
1357                         du->gui_x = rects[du->unit].x;
1358                         du->gui_y = rects[du->unit].y;
1359                 } else {
1360                         du->pref_width = 800;
1361                         du->pref_height = 600;
1362                         du->pref_active = false;
1363                 }
1364                 con->status = vmw_du_connector_detect(con, true);
1365         }
1366
1367         mutex_unlock(&dev->mode_config.mutex);
1368
1369         return 0;
1370 }
1371
1372 void vmw_du_crtc_save(struct drm_crtc *crtc)
1373 {
1374 }
1375
1376 void vmw_du_crtc_restore(struct drm_crtc *crtc)
1377 {
1378 }
1379
1380 void vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
1381                            u16 *r, u16 *g, u16 *b,
1382                            uint32_t start, uint32_t size)
1383 {
1384         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
1385         int i;
1386
1387         for (i = 0; i < size; i++) {
1388                 DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
1389                           r[i], g[i], b[i]);
1390                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
1391                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
1392                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
1393         }
1394 }
1395
1396 int vmw_du_connector_dpms(struct drm_connector *connector, int mode)
1397 {
1398         return 0;
1399 }
1400
1401 void vmw_du_connector_save(struct drm_connector *connector)
1402 {
1403 }
1404
1405 void vmw_du_connector_restore(struct drm_connector *connector)
1406 {
1407 }
1408
1409 enum drm_connector_status
1410 vmw_du_connector_detect(struct drm_connector *connector, bool force)
1411 {
1412         uint32_t num_displays;
1413         struct drm_device *dev = connector->dev;
1414         struct vmw_private *dev_priv = vmw_priv(dev);
1415         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1416
1417         num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
1418
1419         return ((vmw_connector_to_du(connector)->unit < num_displays &&
1420                  du->pref_active) ?
1421                 connector_status_connected : connector_status_disconnected);
1422 }
1423
1424 static struct drm_display_mode vmw_kms_connector_builtin[] = {
1425         /* 640x480@60Hz */
1426         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
1427                    752, 800, 0, 480, 489, 492, 525, 0,
1428                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1429         /* 800x600@60Hz */
1430         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
1431                    968, 1056, 0, 600, 601, 605, 628, 0,
1432                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1433         /* 1024x768@60Hz */
1434         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1435                    1184, 1344, 0, 768, 771, 777, 806, 0,
1436                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1437         /* 1152x864@75Hz */
1438         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1439                    1344, 1600, 0, 864, 865, 868, 900, 0,
1440                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1441         /* 1280x768@60Hz */
1442         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
1443                    1472, 1664, 0, 768, 771, 778, 798, 0,
1444                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1445         /* 1280x800@60Hz */
1446         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
1447                    1480, 1680, 0, 800, 803, 809, 831, 0,
1448                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
1449         /* 1280x960@60Hz */
1450         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
1451                    1488, 1800, 0, 960, 961, 964, 1000, 0,
1452                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1453         /* 1280x1024@60Hz */
1454         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
1455                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
1456                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1457         /* 1360x768@60Hz */
1458         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
1459                    1536, 1792, 0, 768, 771, 777, 795, 0,
1460                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1461         /* 1440x1050@60Hz */
1462         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
1463                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
1464                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1465         /* 1440x900@60Hz */
1466         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
1467                    1672, 1904, 0, 900, 903, 909, 934, 0,
1468                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1469         /* 1600x1200@60Hz */
1470         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
1471                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
1472                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1473         /* 1680x1050@60Hz */
1474         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
1475                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
1476                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1477         /* 1792x1344@60Hz */
1478         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
1479                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
1480                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1481         /* 1853x1392@60Hz */
1482         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
1483                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
1484                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1485         /* 1920x1200@60Hz */
1486         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
1487                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
1488                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1489         /* 1920x1440@60Hz */
1490         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
1491                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
1492                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1493         /* 2560x1600@60Hz */
1494         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
1495                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
1496                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1497         /* Terminate */
1498         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
1499 };
1500
1501 /**
1502  * vmw_guess_mode_timing - Provide fake timings for a
1503  * 60Hz vrefresh mode.
1504  *
1505  * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
1506  * members filled in.
1507  */
1508 void vmw_guess_mode_timing(struct drm_display_mode *mode)
1509 {
1510         mode->hsync_start = mode->hdisplay + 50;
1511         mode->hsync_end = mode->hsync_start + 50;
1512         mode->htotal = mode->hsync_end + 50;
1513
1514         mode->vsync_start = mode->vdisplay + 50;
1515         mode->vsync_end = mode->vsync_start + 50;
1516         mode->vtotal = mode->vsync_end + 50;
1517
1518         mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
1519         mode->vrefresh = drm_mode_vrefresh(mode);
1520 }
1521
1522
1523 int vmw_du_connector_fill_modes(struct drm_connector *connector,
1524                                 uint32_t max_width, uint32_t max_height)
1525 {
1526         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1527         struct drm_device *dev = connector->dev;
1528         struct vmw_private *dev_priv = vmw_priv(dev);
1529         struct drm_display_mode *mode = NULL;
1530         struct drm_display_mode *bmode;
1531         struct drm_display_mode prefmode = { DRM_MODE("preferred",
1532                 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
1533                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1534                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
1535         };
1536         int i;
1537         u32 assumed_bpp = 2;
1538
1539         /*
1540          * If using screen objects, then assume 32-bpp because that's what the
1541          * SVGA device is assuming
1542          */
1543         if (dev_priv->active_display_unit == vmw_du_screen_object)
1544                 assumed_bpp = 4;
1545
1546         if (dev_priv->active_display_unit == vmw_du_screen_target) {
1547                 max_width  = min(max_width,  dev_priv->stdu_max_width);
1548                 max_height = min(max_height, dev_priv->stdu_max_height);
1549         }
1550
1551         /* Add preferred mode */
1552         mode = drm_mode_duplicate(dev, &prefmode);
1553         if (!mode)
1554                 return 0;
1555         mode->hdisplay = du->pref_width;
1556         mode->vdisplay = du->pref_height;
1557         vmw_guess_mode_timing(mode);
1558
1559         if (vmw_kms_validate_mode_vram(dev_priv,
1560                                         mode->hdisplay * assumed_bpp,
1561                                         mode->vdisplay)) {
1562                 drm_mode_probed_add(connector, mode);
1563         } else {
1564                 drm_mode_destroy(dev, mode);
1565                 mode = NULL;
1566         }
1567
1568         if (du->pref_mode) {
1569                 list_del_init(&du->pref_mode->head);
1570                 drm_mode_destroy(dev, du->pref_mode);
1571         }
1572
1573         /* mode might be null here, this is intended */
1574         du->pref_mode = mode;
1575
1576         for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
1577                 bmode = &vmw_kms_connector_builtin[i];
1578                 if (bmode->hdisplay > max_width ||
1579                     bmode->vdisplay > max_height)
1580                         continue;
1581
1582                 if (!vmw_kms_validate_mode_vram(dev_priv,
1583                                                 bmode->hdisplay * assumed_bpp,
1584                                                 bmode->vdisplay))
1585                         continue;
1586
1587                 mode = drm_mode_duplicate(dev, bmode);
1588                 if (!mode)
1589                         return 0;
1590                 mode->vrefresh = drm_mode_vrefresh(mode);
1591
1592                 drm_mode_probed_add(connector, mode);
1593         }
1594
1595         drm_mode_connector_list_update(connector, true);
1596         /* Move the prefered mode first, help apps pick the right mode. */
1597         drm_mode_sort(&connector->modes);
1598
1599         return 1;
1600 }
1601
1602 int vmw_du_connector_set_property(struct drm_connector *connector,
1603                                   struct drm_property *property,
1604                                   uint64_t val)
1605 {
1606         return 0;
1607 }
1608
1609
1610 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
1611                                 struct drm_file *file_priv)
1612 {
1613         struct vmw_private *dev_priv = vmw_priv(dev);
1614         struct drm_vmw_update_layout_arg *arg =
1615                 (struct drm_vmw_update_layout_arg *)data;
1616         void __user *user_rects;
1617         struct drm_vmw_rect *rects;
1618         unsigned rects_size;
1619         int ret;
1620         int i;
1621         u64 total_pixels = 0;
1622         struct drm_mode_config *mode_config = &dev->mode_config;
1623         struct drm_vmw_rect bounding_box = {0};
1624
1625         if (!arg->num_outputs) {
1626                 struct drm_vmw_rect def_rect = {0, 0, 800, 600};
1627                 vmw_du_update_layout(dev_priv, 1, &def_rect);
1628                 return 0;
1629         }
1630
1631         rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
1632         rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
1633                         GFP_KERNEL);
1634         if (unlikely(!rects))
1635                 return -ENOMEM;
1636
1637         user_rects = (void __user *)(unsigned long)arg->rects;
1638         ret = copy_from_user(rects, user_rects, rects_size);
1639         if (unlikely(ret != 0)) {
1640                 DRM_ERROR("Failed to get rects.\n");
1641                 ret = -EFAULT;
1642                 goto out_free;
1643         }
1644
1645         for (i = 0; i < arg->num_outputs; ++i) {
1646                 if (rects[i].x < 0 ||
1647                     rects[i].y < 0 ||
1648                     rects[i].x + rects[i].w > mode_config->max_width ||
1649                     rects[i].y + rects[i].h > mode_config->max_height) {
1650                         DRM_ERROR("Invalid GUI layout.\n");
1651                         ret = -EINVAL;
1652                         goto out_free;
1653                 }
1654
1655                 /*
1656                  * bounding_box.w and bunding_box.h are used as
1657                  * lower-right coordinates
1658                  */
1659                 if (rects[i].x + rects[i].w > bounding_box.w)
1660                         bounding_box.w = rects[i].x + rects[i].w;
1661
1662                 if (rects[i].y + rects[i].h > bounding_box.h)
1663                         bounding_box.h = rects[i].y + rects[i].h;
1664
1665                 total_pixels += (u64) rects[i].w * (u64) rects[i].h;
1666         }
1667
1668         if (dev_priv->active_display_unit == vmw_du_screen_target) {
1669                 /*
1670                  * For Screen Targets, the limits for a toplogy are:
1671                  *      1. Bounding box (assuming 32bpp) must be < prim_bb_mem
1672                  *      2. Total pixels (assuming 32bpp) must be < prim_bb_mem
1673                  */
1674                 u64 bb_mem    = bounding_box.w * bounding_box.h * 4;
1675                 u64 pixel_mem = total_pixels * 4;
1676
1677                 if (bb_mem > dev_priv->prim_bb_mem) {
1678                         DRM_ERROR("Topology is beyond supported limits.\n");
1679                         ret = -EINVAL;
1680                         goto out_free;
1681                 }
1682
1683                 if (pixel_mem > dev_priv->prim_bb_mem) {
1684                         DRM_ERROR("Combined output size too large\n");
1685                         ret = -EINVAL;
1686                         goto out_free;
1687                 }
1688         }
1689
1690         vmw_du_update_layout(dev_priv, arg->num_outputs, rects);
1691
1692 out_free:
1693         kfree(rects);
1694         return ret;
1695 }
1696
1697 /**
1698  * vmw_kms_helper_dirty - Helper to build commands and perform actions based
1699  * on a set of cliprects and a set of display units.
1700  *
1701  * @dev_priv: Pointer to a device private structure.
1702  * @framebuffer: Pointer to the framebuffer on which to perform the actions.
1703  * @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL.
1704  * Cliprects are given in framebuffer coordinates.
1705  * @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must
1706  * be NULL. Cliprects are given in source coordinates.
1707  * @dest_x: X coordinate offset for the crtc / destination clip rects.
1708  * @dest_y: Y coordinate offset for the crtc / destination clip rects.
1709  * @num_clips: Number of cliprects in the @clips or @vclips array.
1710  * @increment: Integer with which to increment the clip counter when looping.
1711  * Used to skip a predetermined number of clip rects.
1712  * @dirty: Closure structure. See the description of struct vmw_kms_dirty.
1713  */
1714 int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
1715                          struct vmw_framebuffer *framebuffer,
1716                          const struct drm_clip_rect *clips,
1717                          const struct drm_vmw_rect *vclips,
1718                          s32 dest_x, s32 dest_y,
1719                          int num_clips,
1720                          int increment,
1721                          struct vmw_kms_dirty *dirty)
1722 {
1723         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
1724         struct drm_crtc *crtc;
1725         u32 num_units = 0;
1726         u32 i, k;
1727
1728         dirty->dev_priv = dev_priv;
1729
1730         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
1731                 if (crtc->primary->fb != &framebuffer->base)
1732                         continue;
1733                 units[num_units++] = vmw_crtc_to_du(crtc);
1734         }
1735
1736         for (k = 0; k < num_units; k++) {
1737                 struct vmw_display_unit *unit = units[k];
1738                 s32 crtc_x = unit->crtc.x;
1739                 s32 crtc_y = unit->crtc.y;
1740                 s32 crtc_width = unit->crtc.mode.hdisplay;
1741                 s32 crtc_height = unit->crtc.mode.vdisplay;
1742                 const struct drm_clip_rect *clips_ptr = clips;
1743                 const struct drm_vmw_rect *vclips_ptr = vclips;
1744
1745                 dirty->unit = unit;
1746                 if (dirty->fifo_reserve_size > 0) {
1747                         dirty->cmd = vmw_fifo_reserve(dev_priv,
1748                                                       dirty->fifo_reserve_size);
1749                         if (!dirty->cmd) {
1750                                 DRM_ERROR("Couldn't reserve fifo space "
1751                                           "for dirty blits.\n");
1752                                 return -ENOMEM;
1753                         }
1754                         memset(dirty->cmd, 0, dirty->fifo_reserve_size);
1755                 }
1756                 dirty->num_hits = 0;
1757                 for (i = 0; i < num_clips; i++, clips_ptr += increment,
1758                        vclips_ptr += increment) {
1759                         s32 clip_left;
1760                         s32 clip_top;
1761
1762                         /*
1763                          * Select clip array type. Note that integer type
1764                          * in @clips is unsigned short, whereas in @vclips
1765                          * it's 32-bit.
1766                          */
1767                         if (clips) {
1768                                 dirty->fb_x = (s32) clips_ptr->x1;
1769                                 dirty->fb_y = (s32) clips_ptr->y1;
1770                                 dirty->unit_x2 = (s32) clips_ptr->x2 + dest_x -
1771                                         crtc_x;
1772                                 dirty->unit_y2 = (s32) clips_ptr->y2 + dest_y -
1773                                         crtc_y;
1774                         } else {
1775                                 dirty->fb_x = vclips_ptr->x;
1776                                 dirty->fb_y = vclips_ptr->y;
1777                                 dirty->unit_x2 = dirty->fb_x + vclips_ptr->w +
1778                                         dest_x - crtc_x;
1779                                 dirty->unit_y2 = dirty->fb_y + vclips_ptr->h +
1780                                         dest_y - crtc_y;
1781                         }
1782
1783                         dirty->unit_x1 = dirty->fb_x + dest_x - crtc_x;
1784                         dirty->unit_y1 = dirty->fb_y + dest_y - crtc_y;
1785
1786                         /* Skip this clip if it's outside the crtc region */
1787                         if (dirty->unit_x1 >= crtc_width ||
1788                             dirty->unit_y1 >= crtc_height ||
1789                             dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0)
1790                                 continue;
1791
1792                         /* Clip right and bottom to crtc limits */
1793                         dirty->unit_x2 = min_t(s32, dirty->unit_x2,
1794                                                crtc_width);
1795                         dirty->unit_y2 = min_t(s32, dirty->unit_y2,
1796                                                crtc_height);
1797
1798                         /* Clip left and top to crtc limits */
1799                         clip_left = min_t(s32, dirty->unit_x1, 0);
1800                         clip_top = min_t(s32, dirty->unit_y1, 0);
1801                         dirty->unit_x1 -= clip_left;
1802                         dirty->unit_y1 -= clip_top;
1803                         dirty->fb_x -= clip_left;
1804                         dirty->fb_y -= clip_top;
1805
1806                         dirty->clip(dirty);
1807                 }
1808
1809                 dirty->fifo_commit(dirty);
1810         }
1811
1812         return 0;
1813 }
1814
1815 /**
1816  * vmw_kms_helper_buffer_prepare - Reserve and validate a buffer object before
1817  * command submission.
1818  *
1819  * @dev_priv. Pointer to a device private structure.
1820  * @buf: The buffer object
1821  * @interruptible: Whether to perform waits as interruptible.
1822  * @validate_as_mob: Whether the buffer should be validated as a MOB. If false,
1823  * The buffer will be validated as a GMR. Already pinned buffers will not be
1824  * validated.
1825  *
1826  * Returns 0 on success, negative error code on failure, -ERESTARTSYS if
1827  * interrupted by a signal.
1828  */
1829 int vmw_kms_helper_buffer_prepare(struct vmw_private *dev_priv,
1830                                   struct vmw_dma_buffer *buf,
1831                                   bool interruptible,
1832                                   bool validate_as_mob)
1833 {
1834         struct ttm_buffer_object *bo = &buf->base;
1835         int ret;
1836
1837         ttm_bo_reserve(bo, false, false, interruptible, NULL);
1838         ret = vmw_validate_single_buffer(dev_priv, bo, interruptible,
1839                                          validate_as_mob);
1840         if (ret)
1841                 ttm_bo_unreserve(bo);
1842
1843         return ret;
1844 }
1845
1846 /**
1847  * vmw_kms_helper_buffer_revert - Undo the actions of
1848  * vmw_kms_helper_buffer_prepare.
1849  *
1850  * @res: Pointer to the buffer object.
1851  *
1852  * Helper to be used if an error forces the caller to undo the actions of
1853  * vmw_kms_helper_buffer_prepare.
1854  */
1855 void vmw_kms_helper_buffer_revert(struct vmw_dma_buffer *buf)
1856 {
1857         if (buf)
1858                 ttm_bo_unreserve(&buf->base);
1859 }
1860
1861 /**
1862  * vmw_kms_helper_buffer_finish - Unreserve and fence a buffer object after
1863  * kms command submission.
1864  *
1865  * @dev_priv: Pointer to a device private structure.
1866  * @file_priv: Pointer to a struct drm_file representing the caller's
1867  * connection. Must be set to NULL if @user_fence_rep is NULL, and conversely
1868  * if non-NULL, @user_fence_rep must be non-NULL.
1869  * @buf: The buffer object.
1870  * @out_fence:  Optional pointer to a fence pointer. If non-NULL, a
1871  * ref-counted fence pointer is returned here.
1872  * @user_fence_rep: Optional pointer to a user-space provided struct
1873  * drm_vmw_fence_rep. If provided, @file_priv must also be provided and the
1874  * function copies fence data to user-space in a fail-safe manner.
1875  */
1876 void vmw_kms_helper_buffer_finish(struct vmw_private *dev_priv,
1877                                   struct drm_file *file_priv,
1878                                   struct vmw_dma_buffer *buf,
1879                                   struct vmw_fence_obj **out_fence,
1880                                   struct drm_vmw_fence_rep __user *
1881                                   user_fence_rep)
1882 {
1883         struct vmw_fence_obj *fence;
1884         uint32_t handle;
1885         int ret;
1886
1887         ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
1888                                          file_priv ? &handle : NULL);
1889         if (buf)
1890                 vmw_fence_single_bo(&buf->base, fence);
1891         if (file_priv)
1892                 vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
1893                                             ret, user_fence_rep, fence,
1894                                             handle);
1895         if (out_fence)
1896                 *out_fence = fence;
1897         else
1898                 vmw_fence_obj_unreference(&fence);
1899
1900         vmw_kms_helper_buffer_revert(buf);
1901 }
1902
1903
1904 /**
1905  * vmw_kms_helper_resource_revert - Undo the actions of
1906  * vmw_kms_helper_resource_prepare.
1907  *
1908  * @res: Pointer to the resource. Typically a surface.
1909  *
1910  * Helper to be used if an error forces the caller to undo the actions of
1911  * vmw_kms_helper_resource_prepare.
1912  */
1913 void vmw_kms_helper_resource_revert(struct vmw_resource *res)
1914 {
1915         vmw_kms_helper_buffer_revert(res->backup);
1916         vmw_resource_unreserve(res, false, NULL, 0);
1917         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1918 }
1919
1920 /**
1921  * vmw_kms_helper_resource_prepare - Reserve and validate a resource before
1922  * command submission.
1923  *
1924  * @res: Pointer to the resource. Typically a surface.
1925  * @interruptible: Whether to perform waits as interruptible.
1926  *
1927  * Reserves and validates also the backup buffer if a guest-backed resource.
1928  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
1929  * interrupted by a signal.
1930  */
1931 int vmw_kms_helper_resource_prepare(struct vmw_resource *res,
1932                                     bool interruptible)
1933 {
1934         int ret = 0;
1935
1936         if (interruptible)
1937                 ret = mutex_lock_interruptible(&res->dev_priv->cmdbuf_mutex);
1938         else
1939                 mutex_lock(&res->dev_priv->cmdbuf_mutex);
1940
1941         if (unlikely(ret != 0))
1942                 return -ERESTARTSYS;
1943
1944         ret = vmw_resource_reserve(res, interruptible, false);
1945         if (ret)
1946                 goto out_unlock;
1947
1948         if (res->backup) {
1949                 ret = vmw_kms_helper_buffer_prepare(res->dev_priv, res->backup,
1950                                                     interruptible,
1951                                                     res->dev_priv->has_mob);
1952                 if (ret)
1953                         goto out_unreserve;
1954         }
1955         ret = vmw_resource_validate(res);
1956         if (ret)
1957                 goto out_revert;
1958         return 0;
1959
1960 out_revert:
1961         vmw_kms_helper_buffer_revert(res->backup);
1962 out_unreserve:
1963         vmw_resource_unreserve(res, false, NULL, 0);
1964 out_unlock:
1965         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1966         return ret;
1967 }
1968
1969 /**
1970  * vmw_kms_helper_resource_finish - Unreserve and fence a resource after
1971  * kms command submission.
1972  *
1973  * @res: Pointer to the resource. Typically a surface.
1974  * @out_fence: Optional pointer to a fence pointer. If non-NULL, a
1975  * ref-counted fence pointer is returned here.
1976  */
1977 void vmw_kms_helper_resource_finish(struct vmw_resource *res,
1978                              struct vmw_fence_obj **out_fence)
1979 {
1980         if (res->backup || out_fence)
1981                 vmw_kms_helper_buffer_finish(res->dev_priv, NULL, res->backup,
1982                                              out_fence, NULL);
1983
1984         vmw_resource_unreserve(res, false, NULL, 0);
1985         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1986 }
1987
1988 /**
1989  * vmw_kms_update_proxy - Helper function to update a proxy surface from
1990  * its backing MOB.
1991  *
1992  * @res: Pointer to the surface resource
1993  * @clips: Clip rects in framebuffer (surface) space.
1994  * @num_clips: Number of clips in @clips.
1995  * @increment: Integer with which to increment the clip counter when looping.
1996  * Used to skip a predetermined number of clip rects.
1997  *
1998  * This function makes sure the proxy surface is updated from its backing MOB
1999  * using the region given by @clips. The surface resource @res and its backing
2000  * MOB needs to be reserved and validated on call.
2001  */
2002 int vmw_kms_update_proxy(struct vmw_resource *res,
2003                          const struct drm_clip_rect *clips,
2004                          unsigned num_clips,
2005                          int increment)
2006 {
2007         struct vmw_private *dev_priv = res->dev_priv;
2008         struct drm_vmw_size *size = &vmw_res_to_srf(res)->base_size;
2009         struct {
2010                 SVGA3dCmdHeader header;
2011                 SVGA3dCmdUpdateGBImage body;
2012         } *cmd;
2013         SVGA3dBox *box;
2014         size_t copy_size = 0;
2015         int i;
2016
2017         if (!clips)
2018                 return 0;
2019
2020         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) * num_clips);
2021         if (!cmd) {
2022                 DRM_ERROR("Couldn't reserve fifo space for proxy surface "
2023                           "update.\n");
2024                 return -ENOMEM;
2025         }
2026
2027         for (i = 0; i < num_clips; ++i, clips += increment, ++cmd) {
2028                 box = &cmd->body.box;
2029
2030                 cmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
2031                 cmd->header.size = sizeof(cmd->body);
2032                 cmd->body.image.sid = res->id;
2033                 cmd->body.image.face = 0;
2034                 cmd->body.image.mipmap = 0;
2035
2036                 if (clips->x1 > size->width || clips->x2 > size->width ||
2037                     clips->y1 > size->height || clips->y2 > size->height) {
2038                         DRM_ERROR("Invalid clips outsize of framebuffer.\n");
2039                         return -EINVAL;
2040                 }
2041
2042                 box->x = clips->x1;
2043                 box->y = clips->y1;
2044                 box->z = 0;
2045                 box->w = clips->x2 - clips->x1;
2046                 box->h = clips->y2 - clips->y1;
2047                 box->d = 1;
2048
2049                 copy_size += sizeof(*cmd);
2050         }
2051
2052         vmw_fifo_commit(dev_priv, copy_size);
2053
2054         return 0;
2055 }
2056
2057 int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
2058                             unsigned unit,
2059                             u32 max_width,
2060                             u32 max_height,
2061                             struct drm_connector **p_con,
2062                             struct drm_crtc **p_crtc,
2063                             struct drm_display_mode **p_mode)
2064 {
2065         struct drm_connector *con;
2066         struct vmw_display_unit *du;
2067         struct drm_display_mode *mode;
2068         int i = 0;
2069
2070         list_for_each_entry(con, &dev_priv->dev->mode_config.connector_list,
2071                             head) {
2072                 if (i == unit)
2073                         break;
2074
2075                 ++i;
2076         }
2077
2078         if (i != unit) {
2079                 DRM_ERROR("Could not find initial display unit.\n");
2080                 return -EINVAL;
2081         }
2082
2083         if (list_empty(&con->modes))
2084                 (void) vmw_du_connector_fill_modes(con, max_width, max_height);
2085
2086         if (list_empty(&con->modes)) {
2087                 DRM_ERROR("Could not find initial display mode.\n");
2088                 return -EINVAL;
2089         }
2090
2091         du = vmw_connector_to_du(con);
2092         *p_con = con;
2093         *p_crtc = &du->crtc;
2094
2095         list_for_each_entry(mode, &con->modes, head) {
2096                 if (mode->type & DRM_MODE_TYPE_PREFERRED)
2097                         break;
2098         }
2099
2100         if (mode->type & DRM_MODE_TYPE_PREFERRED)
2101                 *p_mode = mode;
2102         else {
2103                 WARN_ONCE(true, "Could not find initial preferred mode.\n");
2104                 *p_mode = list_first_entry(&con->modes,
2105                                            struct drm_display_mode,
2106                                            head);
2107         }
2108
2109         return 0;
2110 }