drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "vmwgfx_kms.h"
  29
  30 /* Might need a hrtimer here? */
  31 #define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)
  32
  33 void vmw_du_cleanup(struct vmw_display_unit *du)
  34 {
  35         if (du->cursor_surface)
  36                 vmw_surface_unreference(&du->cursor_surface);
  37         if (du->cursor_dmabuf)
  38                 vmw_dmabuf_unreference(&du->cursor_dmabuf);
  39         drm_connector_unregister(&du->connector);
  40         drm_crtc_cleanup(&du->crtc);
  41         drm_encoder_cleanup(&du->encoder);
  42         drm_connector_cleanup(&du->connector);
  43 }
  44
  45 /*
  46  * Display Unit Cursor functions
  47  */
  48
  49 int vmw_cursor_update_image(struct vmw_private *dev_priv,
  50                             u32 *image, u32 width, u32 height,
  51                             u32 hotspotX, u32 hotspotY)
  52 {
  53         struct {
  54                 u32 cmd;
  55                 SVGAFifoCmdDefineAlphaCursor cursor;
  56         } *cmd;
  57         u32 image_size = width * height * 4;
  58         u32 cmd_size = sizeof(*cmd) + image_size;
  59
  60         if (!image)
  61                 return -EINVAL;
  62
  63         cmd = vmw_fifo_reserve(dev_priv, cmd_size);
  64         if (unlikely(cmd == NULL)) {
  65                 DRM_ERROR("Fifo reserve failed.\n");
  66                 return -ENOMEM;
  67         }
  68
  69         memset(cmd, 0, sizeof(*cmd));
  70
  71         memcpy(&cmd[1], image, image_size);
  72
  73         cmd->cmd = SVGA_CMD_DEFINE_ALPHA_CURSOR;
  74         cmd->cursor.id = 0;
  75         cmd->cursor.width = width;
  76         cmd->cursor.height = height;
  77         cmd->cursor.hotspotX = hotspotX;
  78         cmd->cursor.hotspotY = hotspotY;
  79
  80         vmw_fifo_commit_flush(dev_priv, cmd_size);
  81
  82         return 0;
  83 }
  84
  85 int vmw_cursor_update_dmabuf(struct vmw_private *dev_priv,
  86                              struct vmw_dma_buffer *dmabuf,
  87                              u32 width, u32 height,
  88                              u32 hotspotX, u32 hotspotY)
  89 {
  90         struct ttm_bo_kmap_obj map;
  91         unsigned long kmap_offset;
  92         unsigned long kmap_num;
  93         void *virtual;
  94         bool dummy;
  95         int ret;
  96
  97         kmap_offset = 0;
  98         kmap_num = (width*height*4 + PAGE_SIZE - 1) >> PAGE_SHIFT;
  99
 100         ret = ttm_bo_reserve(&dmabuf->base, true, false, NULL);
 101         if (unlikely(ret != 0)) {
 102                 DRM_ERROR("reserve failed\n");
 103                 return -EINVAL;
 104         }
 105
 106         ret = ttm_bo_kmap(&dmabuf->base, kmap_offset, kmap_num, &map);
 107         if (unlikely(ret != 0))
 108                 goto err_unreserve;
 109
 110         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 111         ret = vmw_cursor_update_image(dev_priv, virtual, width, height,
 112                                       hotspotX, hotspotY);
 113
 114         ttm_bo_kunmap(&map);
 115 err_unreserve:
 116         ttm_bo_unreserve(&dmabuf->base);
 117
 118         return ret;
 119 }
 120
 121
 122 void vmw_cursor_update_position(struct vmw_private *dev_priv,
 123                                 bool show, int x, int y)
 124 {
 125         u32 *fifo_mem = dev_priv->mmio_virt;
 126         uint32_t count;
 127
 128         vmw_mmio_write(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
 129         vmw_mmio_write(x, fifo_mem + SVGA_FIFO_CURSOR_X);
 130         vmw_mmio_write(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
 131         count = vmw_mmio_read(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 132         vmw_mmio_write(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 133 }
 134
 135
 136 /*
 137  * vmw_du_crtc_cursor_set2 - Driver cursor_set2 callback.
 138  */
 139 int vmw_du_crtc_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
 140                             uint32_t handle, uint32_t width, uint32_t height,
 141                             int32_t hot_x, int32_t hot_y)
 142 {
 143         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 144         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 145         struct vmw_surface *surface = NULL;
 146         struct vmw_dma_buffer *dmabuf = NULL;
 147         s32 hotspot_x, hotspot_y;
 148         int ret;
 149
 150         /*
 151          * FIXME: Unclear whether there's any global state touched by the
 152          * cursor_set function, especially vmw_cursor_update_position looks
 153          * suspicious. For now take the easy route and reacquire all locks. We
 154          * can do this since the caller in the drm core doesn't check anything
 155          * which is protected by any looks.
 156          */
 157         drm_modeset_unlock_crtc(crtc);
 158         drm_modeset_lock_all(dev_priv->dev);
 159         hotspot_x = hot_x + du->hotspot_x;
 160         hotspot_y = hot_y + du->hotspot_y;
 161
 162         /* A lot of the code assumes this */
 163         if (handle && (width != 64 || height != 64)) {
 164                 ret = -EINVAL;
 165                 goto out;
 166         }
 167
 168         if (handle) {
 169                 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 170
 171                 ret = vmw_user_lookup_handle(dev_priv, tfile,
 172                                              handle, &surface, &dmabuf);
 173                 if (ret) {
 174                         DRM_ERROR("failed to find surface or dmabuf: %i\n", ret);
 175                         ret = -EINVAL;
 176                         goto out;
 177                 }
 178         }
 179
 180         /* need to do this before taking down old image */
 181         if (surface && !surface->snooper.image) {
 182                 DRM_ERROR("surface not suitable for cursor\n");
 183                 vmw_surface_unreference(&surface);
 184                 ret = -EINVAL;
 185                 goto out;
 186         }
 187
 188         /* takedown old cursor */
 189         if (du->cursor_surface) {
 190                 du->cursor_surface->snooper.crtc = NULL;
 191                 vmw_surface_unreference(&du->cursor_surface);
 192         }
 193         if (du->cursor_dmabuf)
 194                 vmw_dmabuf_unreference(&du->cursor_dmabuf);
 195
 196         /* setup new image */
 197         ret = 0;
 198         if (surface) {
 199                 /* vmw_user_surface_lookup takes one reference */
 200                 du->cursor_surface = surface;
 201
 202                 du->cursor_surface->snooper.crtc = crtc;
 203                 du->cursor_age = du->cursor_surface->snooper.age;
 204                 ret = vmw_cursor_update_image(dev_priv, surface->snooper.image,
 205                                               64, 64, hotspot_x, hotspot_y);
 206         } else if (dmabuf) {
 207                 /* vmw_user_surface_lookup takes one reference */
 208                 du->cursor_dmabuf = dmabuf;
 209
 210                 ret = vmw_cursor_update_dmabuf(dev_priv, dmabuf, width, height,
 211                                                hotspot_x, hotspot_y);
 212         } else {
 213                 vmw_cursor_update_position(dev_priv, false, 0, 0);
 214                 goto out;
 215         }
 216
 217         if (!ret) {
 218                 vmw_cursor_update_position(dev_priv, true,
 219                                            du->cursor_x + hotspot_x,
 220                                            du->cursor_y + hotspot_y);
 221                 du->core_hotspot_x = hot_x;
 222                 du->core_hotspot_y = hot_y;
 223         }
 224
 225 out:
 226         drm_modeset_unlock_all(dev_priv->dev);
 227         drm_modeset_lock_crtc(crtc, crtc->cursor);
 228
 229         return ret;
 230 }
 231
 232 int vmw_du_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
 233 {
 234         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 235         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 236         bool shown = du->cursor_surface || du->cursor_dmabuf ? true : false;
 237
 238         du->cursor_x = x + du->set_gui_x;
 239         du->cursor_y = y + du->set_gui_y;
 240
 241         /*
 242          * FIXME: Unclear whether there's any global state touched by the
 243          * cursor_set function, especially vmw_cursor_update_position looks
 244          * suspicious. For now take the easy route and reacquire all locks. We
 245          * can do this since the caller in the drm core doesn't check anything
 246          * which is protected by any looks.
 247          */
 248         drm_modeset_unlock_crtc(crtc);
 249         drm_modeset_lock_all(dev_priv->dev);
 250
 251         vmw_cursor_update_position(dev_priv, shown,
 252                                    du->cursor_x + du->hotspot_x +
 253                                    du->core_hotspot_x,
 254                                    du->cursor_y + du->hotspot_y +
 255                                    du->core_hotspot_y);
 256
 257         drm_modeset_unlock_all(dev_priv->dev);
 258         drm_modeset_lock_crtc(crtc, crtc->cursor);
 259
 260         return 0;
 261 }
 262
 263 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
 264                           struct ttm_object_file *tfile,
 265                           struct ttm_buffer_object *bo,
 266                           SVGA3dCmdHeader *header)
 267 {
 268         struct ttm_bo_kmap_obj map;
 269         unsigned long kmap_offset;
 270         unsigned long kmap_num;
 271         SVGA3dCopyBox *box;
 272         unsigned box_count;
 273         void *virtual;
 274         bool dummy;
 275         struct vmw_dma_cmd {
 276                 SVGA3dCmdHeader header;
 277                 SVGA3dCmdSurfaceDMA dma;
 278         } *cmd;
 279         int i, ret;
 280
 281         cmd = container_of(header, struct vmw_dma_cmd, header);
 282
 283         /* No snooper installed */
 284         if (!srf->snooper.image)
 285                 return;
 286
 287         if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
 288                 DRM_ERROR("face and mipmap for cursors should never != 0\n");
 289                 return;
 290         }
 291
 292         if (cmd->header.size < 64) {
 293                 DRM_ERROR("at least one full copy box must be given\n");
 294                 return;
 295         }
 296
 297         box = (SVGA3dCopyBox *)&cmd[1];
 298         box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
 299                         sizeof(SVGA3dCopyBox);
 300
 301         if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
 302             box->x != 0    || box->y != 0    || box->z != 0    ||
 303             box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
 304             box->d != 1    || box_count != 1) {
 305                 /* TODO handle none page aligned offsets */
 306                 /* TODO handle more dst & src != 0 */
 307                 /* TODO handle more then one copy */
 308                 DRM_ERROR("Cant snoop dma request for cursor!\n");
 309                 DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
 310                           box->srcx, box->srcy, box->srcz,
 311                           box->x, box->y, box->z,
 312                           box->w, box->h, box->d, box_count,
 313                           cmd->dma.guest.ptr.offset);
 314                 return;
 315         }
 316
 317         kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
 318         kmap_num = (64*64*4) >> PAGE_SHIFT;
 319
 320         ret = ttm_bo_reserve(bo, true, false, NULL);
 321         if (unlikely(ret != 0)) {
 322                 DRM_ERROR("reserve failed\n");
 323                 return;
 324         }
 325
 326         ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
 327         if (unlikely(ret != 0))
 328                 goto err_unreserve;
 329
 330         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 331
 332         if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
 333                 memcpy(srf->snooper.image, virtual, 64*64*4);
 334         } else {
 335                 /* Image is unsigned pointer. */
 336                 for (i = 0; i < box->h; i++)
 337                         memcpy(srf->snooper.image + i * 64,
 338                                virtual + i * cmd->dma.guest.pitch,
 339                                box->w * 4);
 340         }
 341
 342         srf->snooper.age++;
 343
 344         ttm_bo_kunmap(&map);
 345 err_unreserve:
 346         ttm_bo_unreserve(bo);
 347 }
 348
 349 /**
 350  * vmw_kms_legacy_hotspot_clear - Clear legacy hotspots
 351  *
 352  * @dev_priv: Pointer to the device private struct.
 353  *
 354  * Clears all legacy hotspots.
 355  */
 356 void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv)
 357 {
 358         struct drm_device *dev = dev_priv->dev;
 359         struct vmw_display_unit *du;
 360         struct drm_crtc *crtc;
 361
 362         drm_modeset_lock_all(dev);
 363         drm_for_each_crtc(crtc, dev) {
 364                 du = vmw_crtc_to_du(crtc);
 365
 366                 du->hotspot_x = 0;
 367                 du->hotspot_y = 0;
 368         }
 369         drm_modeset_unlock_all(dev);
 370 }
 371
 372 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
 373 {
 374         struct drm_device *dev = dev_priv->dev;
 375         struct vmw_display_unit *du;
 376         struct drm_crtc *crtc;
 377
 378         mutex_lock(&dev->mode_config.mutex);
 379
 380         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 381                 du = vmw_crtc_to_du(crtc);
 382                 if (!du->cursor_surface ||
 383                     du->cursor_age == du->cursor_surface->snooper.age)
 384                         continue;
 385
 386                 du->cursor_age = du->cursor_surface->snooper.age;
 387                 vmw_cursor_update_image(dev_priv,
 388                                         du->cursor_surface->snooper.image,
 389                                         64, 64,
 390                                         du->hotspot_x + du->core_hotspot_x,
 391                                         du->hotspot_y + du->core_hotspot_y);
 392         }
 393
 394         mutex_unlock(&dev->mode_config.mutex);
 395 }
 396
 397 /*
 398  * Generic framebuffer code
 399  */
 400
 401 /*
 402  * Surface framebuffer code
 403  */
 404
 405 static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
 406 {
 407         struct vmw_framebuffer_surface *vfbs =
 408                 vmw_framebuffer_to_vfbs(framebuffer);
 409
 410         drm_framebuffer_cleanup(framebuffer);
 411         vmw_surface_unreference(&vfbs->surface);
 412         if (vfbs->base.user_obj)
 413                 ttm_base_object_unref(&vfbs->base.user_obj);
 414
 415         kfree(vfbs);
 416 }
 417
 418 static int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
 419                                   struct drm_file *file_priv,
 420                                   unsigned flags, unsigned color,
 421                                   struct drm_clip_rect *clips,
 422                                   unsigned num_clips)
 423 {
 424         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 425         struct vmw_framebuffer_surface *vfbs =
 426                 vmw_framebuffer_to_vfbs(framebuffer);
 427         struct drm_clip_rect norect;
 428         int ret, inc = 1;
 429
 430         /* Legacy Display Unit does not support 3D */
 431         if (dev_priv->active_display_unit == vmw_du_legacy)
 432                 return -EINVAL;
 433
 434         drm_modeset_lock_all(dev_priv->dev);
 435
 436         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 437         if (unlikely(ret != 0)) {
 438                 drm_modeset_unlock_all(dev_priv->dev);
 439                 return ret;
 440         }
 441
 442         if (!num_clips) {
 443                 num_clips = 1;
 444                 clips = &norect;
 445                 norect.x1 = norect.y1 = 0;
 446                 norect.x2 = framebuffer->width;
 447                 norect.y2 = framebuffer->height;
 448         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 449                 num_clips /= 2;
 450                 inc = 2; /* skip source rects */
 451         }
 452
 453         if (dev_priv->active_display_unit == vmw_du_screen_object)
 454                 ret = vmw_kms_sou_do_surface_dirty(dev_priv, &vfbs->base,
 455                                                    clips, NULL, NULL, 0, 0,
 456                                                    num_clips, inc, NULL);
 457         else
 458                 ret = vmw_kms_stdu_surface_dirty(dev_priv, &vfbs->base,
 459                                                  clips, NULL, NULL, 0, 0,
 460                                                  num_clips, inc, NULL);
 461
 462         vmw_fifo_flush(dev_priv, false);
 463         ttm_read_unlock(&dev_priv->reservation_sem);
 464
 465         drm_modeset_unlock_all(dev_priv->dev);
 466
 467         return 0;
 468 }
 469
 470 /**
 471  * vmw_kms_readback - Perform a readback from the screen system to
 472  * a dma-buffer backed framebuffer.
 473  *
 474  * @dev_priv: Pointer to the device private structure.
 475  * @file_priv: Pointer to a struct drm_file identifying the caller.
 476  * Must be set to NULL if @user_fence_rep is NULL.
 477  * @vfb: Pointer to the dma-buffer backed framebuffer.
 478  * @user_fence_rep: User-space provided structure for fence information.
 479  * Must be set to non-NULL if @file_priv is non-NULL.
 480  * @vclips: Array of clip rects.
 481  * @num_clips: Number of clip rects in @vclips.
 482  *
 483  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 484  * interrupted.
 485  */
 486 int vmw_kms_readback(struct vmw_private *dev_priv,
 487                      struct drm_file *file_priv,
 488                      struct vmw_framebuffer *vfb,
 489                      struct drm_vmw_fence_rep __user *user_fence_rep,
 490                      struct drm_vmw_rect *vclips,
 491                      uint32_t num_clips)
 492 {
 493         switch (dev_priv->active_display_unit) {
 494         case vmw_du_screen_object:
 495                 return vmw_kms_sou_readback(dev_priv, file_priv, vfb,
 496                                             user_fence_rep, vclips, num_clips);
 497         case vmw_du_screen_target:
 498                 return vmw_kms_stdu_dma(dev_priv, file_priv, vfb,
 499                                         user_fence_rep, NULL, vclips, num_clips,
 500                                         1, false, true);
 501         default:
 502                 WARN_ONCE(true,
 503                           "Readback called with invalid display system.\n");
 504 }
 505
 506         return -ENOSYS;
 507 }
 508
 509
 510 static const struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
 511         .destroy = vmw_framebuffer_surface_destroy,
 512         .dirty = vmw_framebuffer_surface_dirty,
 513 };
 514
 515 static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
 516                                            struct vmw_surface *surface,
 517                                            struct vmw_framebuffer **out,
 518                                            const struct drm_mode_fb_cmd
 519                                            *mode_cmd,
 520                                            bool is_dmabuf_proxy)
 521
 522 {
 523         struct drm_device *dev = dev_priv->dev;
 524         struct vmw_framebuffer_surface *vfbs;
 525         enum SVGA3dSurfaceFormat format;
 526         int ret;
 527
 528         /* 3D is only supported on HWv8 and newer hosts */
 529         if (dev_priv->active_display_unit == vmw_du_legacy)
 530                 return -ENOSYS;
 531
 532         /*
 533          * Sanity checks.
 534          */
 535
 536         /* Surface must be marked as a scanout. */
 537         if (unlikely(!surface->scanout))
 538                 return -EINVAL;
 539
 540         if (unlikely(surface->mip_levels[0] != 1 ||
 541                      surface->num_sizes != 1 ||
 542                      surface->base_size.width < mode_cmd->width ||
 543                      surface->base_size.height < mode_cmd->height ||
 544                      surface->base_size.depth != 1)) {
 545                 DRM_ERROR("Incompatible surface dimensions "
 546                           "for requested mode.\n");
 547                 return -EINVAL;
 548         }
 549
 550         switch (mode_cmd->depth) {
 551         case 32:
 552                 format = SVGA3D_A8R8G8B8;
 553                 break;
 554         case 24:
 555                 format = SVGA3D_X8R8G8B8;
 556                 break;
 557         case 16:
 558                 format = SVGA3D_R5G6B5;
 559                 break;
 560         case 15:
 561                 format = SVGA3D_A1R5G5B5;
 562                 break;
 563         default:
 564                 DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 565                 return -EINVAL;
 566         }
 567
 568         /*
 569          * For DX, surface format validation is done when surface->scanout
 570          * is set.
 571          */
 572         if (!dev_priv->has_dx && format != surface->format) {
 573                 DRM_ERROR("Invalid surface format for requested mode.\n");
 574                 return -EINVAL;
 575         }
 576
 577         vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
 578         if (!vfbs) {
 579                 ret = -ENOMEM;
 580                 goto out_err1;
 581         }
 582
 583         /* XXX get the first 3 from the surface info */
 584         vfbs->base.base.bits_per_pixel = mode_cmd->bpp;
 585         vfbs->base.base.pitches[0] = mode_cmd->pitch;
 586         vfbs->base.base.depth = mode_cmd->depth;
 587         vfbs->base.base.width = mode_cmd->width;
 588         vfbs->base.base.height = mode_cmd->height;
 589         vfbs->surface = vmw_surface_reference(surface);
 590         vfbs->base.user_handle = mode_cmd->handle;
 591         vfbs->is_dmabuf_proxy = is_dmabuf_proxy;
 592
 593         *out = &vfbs->base;
 594
 595         ret = drm_framebuffer_init(dev, &vfbs->base.base,
 596                                    &vmw_framebuffer_surface_funcs);
 597         if (ret)
 598                 goto out_err2;
 599
 600         return 0;
 601
 602 out_err2:
 603         vmw_surface_unreference(&surface);
 604         kfree(vfbs);
 605 out_err1:
 606         return ret;
 607 }
 608
 609 /*
 610  * Dmabuf framebuffer code
 611  */
 612
 613 static void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
 614 {
 615         struct vmw_framebuffer_dmabuf *vfbd =
 616                 vmw_framebuffer_to_vfbd(framebuffer);
 617
 618         drm_framebuffer_cleanup(framebuffer);
 619         vmw_dmabuf_unreference(&vfbd->buffer);
 620         if (vfbd->base.user_obj)
 621                 ttm_base_object_unref(&vfbd->base.user_obj);
 622
 623         kfree(vfbd);
 624 }
 625
 626 static int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
 627                                  struct drm_file *file_priv,
 628                                  unsigned flags, unsigned color,
 629                                  struct drm_clip_rect *clips,
 630                                  unsigned num_clips)
 631 {
 632         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 633         struct vmw_framebuffer_dmabuf *vfbd =
 634                 vmw_framebuffer_to_vfbd(framebuffer);
 635         struct drm_clip_rect norect;
 636         int ret, increment = 1;
 637
 638         drm_modeset_lock_all(dev_priv->dev);
 639
 640         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 641         if (unlikely(ret != 0)) {
 642                 drm_modeset_unlock_all(dev_priv->dev);
 643                 return ret;
 644         }
 645
 646         if (!num_clips) {
 647                 num_clips = 1;
 648                 clips = &norect;
 649                 norect.x1 = norect.y1 = 0;
 650                 norect.x2 = framebuffer->width;
 651                 norect.y2 = framebuffer->height;
 652         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 653                 num_clips /= 2;
 654                 increment = 2;
 655         }
 656
 657         switch (dev_priv->active_display_unit) {
 658         case vmw_du_screen_target:
 659                 ret = vmw_kms_stdu_dma(dev_priv, NULL, &vfbd->base, NULL,
 660                                        clips, NULL, num_clips, increment,
 661                                        true, true);
 662                 break;
 663         case vmw_du_screen_object:
 664                 ret = vmw_kms_sou_do_dmabuf_dirty(dev_priv, &vfbd->base,
 665                                                   clips, NULL, num_clips,
 666                                                   increment, true, NULL);
 667                 break;
 668         case vmw_du_legacy:
 669                 ret = vmw_kms_ldu_do_dmabuf_dirty(dev_priv, &vfbd->base, 0, 0,
 670                                                   clips, num_clips, increment);
 671                 break;
 672         default:
 673                 ret = -EINVAL;
 674                 WARN_ONCE(true, "Dirty called with invalid display system.\n");
 675                 break;
 676         }
 677
 678         vmw_fifo_flush(dev_priv, false);
 679         ttm_read_unlock(&dev_priv->reservation_sem);
 680
 681         drm_modeset_unlock_all(dev_priv->dev);
 682
 683         return ret;
 684 }
 685
 686 static const struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
 687         .destroy = vmw_framebuffer_dmabuf_destroy,
 688         .dirty = vmw_framebuffer_dmabuf_dirty,
 689 };
 690
 691 /**
 692  * Pin the dmabuffer to the start of vram.
 693  */
 694 static int vmw_framebuffer_pin(struct vmw_framebuffer *vfb)
 695 {
 696         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 697         struct vmw_dma_buffer *buf;
 698         int ret;
 699
 700         buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
 701                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
 702
 703         if (!buf)
 704                 return 0;
 705
 706         switch (dev_priv->active_display_unit) {
 707         case vmw_du_legacy:
 708                 vmw_overlay_pause_all(dev_priv);
 709                 ret = vmw_dmabuf_pin_in_start_of_vram(dev_priv, buf, false);
 710                 vmw_overlay_resume_all(dev_priv);
 711                 break;
 712         case vmw_du_screen_object:
 713         case vmw_du_screen_target:
 714                 if (vfb->dmabuf)
 715                         return vmw_dmabuf_pin_in_vram_or_gmr(dev_priv, buf,
 716                                                              false);
 717
 718                 return vmw_dmabuf_pin_in_placement(dev_priv, buf,
 719                                                    &vmw_mob_placement, false);
 720         default:
 721                 return -EINVAL;
 722         }
 723
 724         return ret;
 725 }
 726
 727 static int vmw_framebuffer_unpin(struct vmw_framebuffer *vfb)
 728 {
 729         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 730         struct vmw_dma_buffer *buf;
 731
 732         buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
 733                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
 734
 735         if (WARN_ON(!buf))
 736                 return 0;
 737
 738         return vmw_dmabuf_unpin(dev_priv, buf, false);
 739 }
 740
 741 /**
 742  * vmw_create_dmabuf_proxy - create a proxy surface for the DMA buf
 743  *
 744  * @dev: DRM device
 745  * @mode_cmd: parameters for the new surface
 746  * @dmabuf_mob: MOB backing the DMA buf
 747  * @srf_out: newly created surface
 748  *
 749  * When the content FB is a DMA buf, we create a surface as a proxy to the
 750  * same buffer.  This way we can do a surface copy rather than a surface DMA.
 751  * This is a more efficient approach
 752  *
 753  * RETURNS:
 754  * 0 on success, error code otherwise
 755  */
 756 static int vmw_create_dmabuf_proxy(struct drm_device *dev,
 757                                    const struct drm_mode_fb_cmd *mode_cmd,
 758                                    struct vmw_dma_buffer *dmabuf_mob,
 759                                    struct vmw_surface **srf_out)
 760 {
 761         uint32_t format;
 762         struct drm_vmw_size content_base_size;
 763         struct vmw_resource *res;
 764         unsigned int bytes_pp;
 765         int ret;
 766
 767         switch (mode_cmd->depth) {
 768         case 32:
 769         case 24:
 770                 format = SVGA3D_X8R8G8B8;
 771                 bytes_pp = 4;
 772                 break;
 773
 774         case 16:
 775         case 15:
 776                 format = SVGA3D_R5G6B5;
 777                 bytes_pp = 2;
 778                 break;
 779
 780         case 8:
 781                 format = SVGA3D_P8;
 782                 bytes_pp = 1;
 783                 break;
 784
 785         default:
 786                 DRM_ERROR("Invalid framebuffer format %d\n", mode_cmd->depth);
 787                 return -EINVAL;
 788         }
 789
 790         content_base_size.width  = mode_cmd->pitch / bytes_pp;
 791         content_base_size.height = mode_cmd->height;
 792         content_base_size.depth  = 1;
 793
 794         ret = vmw_surface_gb_priv_define(dev,
 795                         0, /* kernel visible only */
 796                         0, /* flags */
 797                         format,
 798                         true, /* can be a scanout buffer */
 799                         1, /* num of mip levels */
 800                         0,
 801                         0,
 802                         content_base_size,
 803                         srf_out);
 804         if (ret) {
 805                 DRM_ERROR("Failed to allocate proxy content buffer\n");
 806                 return ret;
 807         }
 808
 809         res = &(*srf_out)->res;
 810
 811         /* Reserve and switch the backing mob. */
 812         mutex_lock(&res->dev_priv->cmdbuf_mutex);
 813         (void) vmw_resource_reserve(res, false, true);
 814         vmw_dmabuf_unreference(&res->backup);
 815         res->backup = vmw_dmabuf_reference(dmabuf_mob);
 816         res->backup_offset = 0;
 817         vmw_resource_unreserve(res, false, NULL, 0);
 818         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
 819
 820         return 0;
 821 }
 822
 823
 824
 825 static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
 826                                           struct vmw_dma_buffer *dmabuf,
 827                                           struct vmw_framebuffer **out,
 828                                           const struct drm_mode_fb_cmd
 829                                           *mode_cmd)
 830
 831 {
 832         struct drm_device *dev = dev_priv->dev;
 833         struct vmw_framebuffer_dmabuf *vfbd;
 834         unsigned int requested_size;
 835         int ret;
 836
 837         requested_size = mode_cmd->height * mode_cmd->pitch;
 838         if (unlikely(requested_size > dmabuf->base.num_pages * PAGE_SIZE)) {
 839                 DRM_ERROR("Screen buffer object size is too small "
 840                           "for requested mode.\n");
 841                 return -EINVAL;
 842         }
 843
 844         /* Limited framebuffer color depth support for screen objects */
 845         if (dev_priv->active_display_unit == vmw_du_screen_object) {
 846                 switch (mode_cmd->depth) {
 847                 case 32:
 848                 case 24:
 849                         /* Only support 32 bpp for 32 and 24 depth fbs */
 850                         if (mode_cmd->bpp == 32)
 851                                 break;
 852
 853                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 854                                   mode_cmd->depth, mode_cmd->bpp);
 855                         return -EINVAL;
 856                 case 16:
 857                 case 15:
 858                         /* Only support 16 bpp for 16 and 15 depth fbs */
 859                         if (mode_cmd->bpp == 16)
 860                                 break;
 861
 862                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 863                                   mode_cmd->depth, mode_cmd->bpp);
 864                         return -EINVAL;
 865                 default:
 866                         DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 867                         return -EINVAL;
 868                 }
 869         }
 870
 871         vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
 872         if (!vfbd) {
 873                 ret = -ENOMEM;
 874                 goto out_err1;
 875         }
 876
 877         vfbd->base.base.bits_per_pixel = mode_cmd->bpp;
 878         vfbd->base.base.pitches[0] = mode_cmd->pitch;
 879         vfbd->base.base.depth = mode_cmd->depth;
 880         vfbd->base.base.width = mode_cmd->width;
 881         vfbd->base.base.height = mode_cmd->height;
 882         vfbd->base.dmabuf = true;
 883         vfbd->buffer = vmw_dmabuf_reference(dmabuf);
 884         vfbd->base.user_handle = mode_cmd->handle;
 885         *out = &vfbd->base;
 886
 887         ret = drm_framebuffer_init(dev, &vfbd->base.base,
 888                                    &vmw_framebuffer_dmabuf_funcs);
 889         if (ret)
 890                 goto out_err2;
 891
 892         return 0;
 893
 894 out_err2:
 895         vmw_dmabuf_unreference(&dmabuf);
 896         kfree(vfbd);
 897 out_err1:
 898         return ret;
 899 }
 900
 901 /**
 902  * vmw_kms_new_framebuffer - Create a new framebuffer.
 903  *
 904  * @dev_priv: Pointer to device private struct.
 905  * @dmabuf: Pointer to dma buffer to wrap the kms framebuffer around.
 906  * Either @dmabuf or @surface must be NULL.
 907  * @surface: Pointer to a surface to wrap the kms framebuffer around.
 908  * Either @dmabuf or @surface must be NULL.
 909  * @only_2d: No presents will occur to this dma buffer based framebuffer. This
 910  * Helps the code to do some important optimizations.
 911  * @mode_cmd: Frame-buffer metadata.
 912  */
 913 struct vmw_framebuffer *
 914 vmw_kms_new_framebuffer(struct vmw_private *dev_priv,
 915                         struct vmw_dma_buffer *dmabuf,
 916                         struct vmw_surface *surface,
 917                         bool only_2d,
 918                         const struct drm_mode_fb_cmd *mode_cmd)
 919 {
 920         struct vmw_framebuffer *vfb = NULL;
 921         bool is_dmabuf_proxy = false;
 922         int ret;
 923
 924         /*
 925          * We cannot use the SurfaceDMA command in an non-accelerated VM,
 926          * therefore, wrap the DMA buf in a surface so we can use the
 927          * SurfaceCopy command.
 928          */
 929         if (dmabuf && only_2d &&
 930             dev_priv->active_display_unit == vmw_du_screen_target) {
 931                 ret = vmw_create_dmabuf_proxy(dev_priv->dev, mode_cmd,
 932                                               dmabuf, &surface);
 933                 if (ret)
 934                         return ERR_PTR(ret);
 935
 936                 is_dmabuf_proxy = true;
 937         }
 938
 939         /* Create the new framebuffer depending one what we have */
 940         if (surface) {
 941                 ret = vmw_kms_new_framebuffer_surface(dev_priv, surface, &vfb,
 942                                                       mode_cmd,
 943                                                       is_dmabuf_proxy);
 944
 945                 /*
 946                  * vmw_create_dmabuf_proxy() adds a reference that is no longer
 947                  * needed
 948                  */
 949                 if (is_dmabuf_proxy)
 950                         vmw_surface_unreference(&surface);
 951         } else if (dmabuf) {
 952                 ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, dmabuf, &vfb,
 953                                                      mode_cmd);
 954         } else {
 955                 BUG();
 956         }
 957
 958         if (ret)
 959                 return ERR_PTR(ret);
 960
 961         vfb->pin = vmw_framebuffer_pin;
 962         vfb->unpin = vmw_framebuffer_unpin;
 963
 964         return vfb;
 965 }
 966
 967 /*
 968  * Generic Kernel modesetting functions
 969  */
 970
 971 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
 972                                                  struct drm_file *file_priv,
 973                                                  const struct drm_mode_fb_cmd2 *mode_cmd2)
 974 {
 975         struct vmw_private *dev_priv = vmw_priv(dev);
 976         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 977         struct vmw_framebuffer *vfb = NULL;
 978         struct vmw_surface *surface = NULL;
 979         struct vmw_dma_buffer *bo = NULL;
 980         struct ttm_base_object *user_obj;
 981         struct drm_mode_fb_cmd mode_cmd;
 982         int ret;
 983
 984         mode_cmd.width = mode_cmd2->width;
 985         mode_cmd.height = mode_cmd2->height;
 986         mode_cmd.pitch = mode_cmd2->pitches[0];
 987         mode_cmd.handle = mode_cmd2->handles[0];
 988         drm_fb_get_bpp_depth(mode_cmd2->pixel_format, &mode_cmd.depth,
 989                                     &mode_cmd.bpp);
 990
 991         /**
 992          * This code should be conditioned on Screen Objects not being used.
 993          * If screen objects are used, we can allocate a GMR to hold the
 994          * requested framebuffer.
 995          */
 996
 997         if (!vmw_kms_validate_mode_vram(dev_priv,
 998                                         mode_cmd.pitch,
 999                                         mode_cmd.height)) {
1000                 DRM_ERROR("Requested mode exceed bounding box limit.\n");
1001                 return ERR_PTR(-ENOMEM);
1002         }
1003
1004         /*
1005          * Take a reference on the user object of the resource
1006          * backing the kms fb. This ensures that user-space handle
1007          * lookups on that resource will always work as long as
1008          * it's registered with a kms framebuffer. This is important,
1009          * since vmw_execbuf_process identifies resources in the
1010          * command stream using user-space handles.
1011          */
1012
1013         user_obj = ttm_base_object_lookup(tfile, mode_cmd.handle);
1014         if (unlikely(user_obj == NULL)) {
1015                 DRM_ERROR("Could not locate requested kms frame buffer.\n");
1016                 return ERR_PTR(-ENOENT);
1017         }
1018
1019         /**
1020          * End conditioned code.
1021          */
1022
1023         /* returns either a dmabuf or surface */
1024         ret = vmw_user_lookup_handle(dev_priv, tfile,
1025                                      mode_cmd.handle,
1026                                      &surface, &bo);
1027         if (ret)
1028                 goto err_out;
1029
1030         vfb = vmw_kms_new_framebuffer(dev_priv, bo, surface,
1031                                       !(dev_priv->capabilities & SVGA_CAP_3D),
1032                                       &mode_cmd);
1033         if (IS_ERR(vfb)) {
1034                 ret = PTR_ERR(vfb);
1035                 goto err_out;
1036         }
1037
1038 err_out:
1039         /* vmw_user_lookup_handle takes one ref so does new_fb */
1040         if (bo)
1041                 vmw_dmabuf_unreference(&bo);
1042         if (surface)
1043                 vmw_surface_unreference(&surface);
1044
1045         if (ret) {
1046                 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1047                 ttm_base_object_unref(&user_obj);
1048                 return ERR_PTR(ret);
1049         } else
1050                 vfb->user_obj = user_obj;
1051
1052         return &vfb->base;
1053 }
1054
1055 static const struct drm_mode_config_funcs vmw_kms_funcs = {
1056         .fb_create = vmw_kms_fb_create,
1057 };
1058
1059 static int vmw_kms_generic_present(struct vmw_private *dev_priv,
1060                                    struct drm_file *file_priv,
1061                                    struct vmw_framebuffer *vfb,
1062                                    struct vmw_surface *surface,
1063                                    uint32_t sid,
1064                                    int32_t destX, int32_t destY,
1065                                    struct drm_vmw_rect *clips,
1066                                    uint32_t num_clips)
1067 {
1068         return vmw_kms_sou_do_surface_dirty(dev_priv, vfb, NULL, clips,
1069                                             &surface->res, destX, destY,
1070                                             num_clips, 1, NULL);
1071 }
1072
1073
1074 int vmw_kms_present(struct vmw_private *dev_priv,
1075                     struct drm_file *file_priv,
1076                     struct vmw_framebuffer *vfb,
1077                     struct vmw_surface *surface,
1078                     uint32_t sid,
1079                     int32_t destX, int32_t destY,
1080                     struct drm_vmw_rect *clips,
1081                     uint32_t num_clips)
1082 {
1083         int ret;
1084
1085         switch (dev_priv->active_display_unit) {
1086         case vmw_du_screen_target:
1087                 ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, clips,
1088                                                  &surface->res, destX, destY,
1089                                                  num_clips, 1, NULL);
1090                 break;
1091         case vmw_du_screen_object:
1092                 ret = vmw_kms_generic_present(dev_priv, file_priv, vfb, surface,
1093                                               sid, destX, destY, clips,
1094                                               num_clips);
1095                 break;
1096         default:
1097                 WARN_ONCE(true,
1098                           "Present called with invalid display system.\n");
1099                 ret = -ENOSYS;
1100                 break;
1101         }
1102         if (ret)
1103                 return ret;
1104
1105         vmw_fifo_flush(dev_priv, false);
1106
1107         return 0;
1108 }
1109
1110 static void
1111 vmw_kms_create_hotplug_mode_update_property(struct vmw_private *dev_priv)
1112 {
1113         if (dev_priv->hotplug_mode_update_property)
1114                 return;
1115
1116         dev_priv->hotplug_mode_update_property =
1117                 drm_property_create_range(dev_priv->dev,
1118                                           DRM_MODE_PROP_IMMUTABLE,
1119                                           "hotplug_mode_update", 0, 1);
1120
1121         if (!dev_priv->hotplug_mode_update_property)
1122                 return;
1123
1124 }
1125
1126 int vmw_kms_init(struct vmw_private *dev_priv)
1127 {
1128         struct drm_device *dev = dev_priv->dev;
1129         int ret;
1130
1131         drm_mode_config_init(dev);
1132         dev->mode_config.funcs = &vmw_kms_funcs;
1133         dev->mode_config.min_width = 1;
1134         dev->mode_config.min_height = 1;
1135         dev->mode_config.max_width = dev_priv->texture_max_width;
1136         dev->mode_config.max_height = dev_priv->texture_max_height;
1137
1138         drm_mode_create_suggested_offset_properties(dev);
1139         vmw_kms_create_hotplug_mode_update_property(dev_priv);
1140
1141         ret = vmw_kms_stdu_init_display(dev_priv);
1142         if (ret) {
1143                 ret = vmw_kms_sou_init_display(dev_priv);
1144                 if (ret) /* Fallback */
1145                         ret = vmw_kms_ldu_init_display(dev_priv);
1146         }
1147
1148         return ret;
1149 }
1150
1151 int vmw_kms_close(struct vmw_private *dev_priv)
1152 {
1153         int ret;
1154
1155         /*
1156          * Docs says we should take the lock before calling this function
1157          * but since it destroys encoders and our destructor calls
1158          * drm_encoder_cleanup which takes the lock we deadlock.
1159          */
1160         drm_mode_config_cleanup(dev_priv->dev);
1161         if (dev_priv->active_display_unit == vmw_du_screen_object)
1162                 ret = vmw_kms_sou_close_display(dev_priv);
1163         else if (dev_priv->active_display_unit == vmw_du_screen_target)
1164                 ret = vmw_kms_stdu_close_display(dev_priv);
1165         else
1166                 ret = vmw_kms_ldu_close_display(dev_priv);
1167
1168         return ret;
1169 }
1170
1171 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1172                                 struct drm_file *file_priv)
1173 {
1174         struct drm_vmw_cursor_bypass_arg *arg = data;
1175         struct vmw_display_unit *du;
1176         struct drm_crtc *crtc;
1177         int ret = 0;
1178
1179
1180         mutex_lock(&dev->mode_config.mutex);
1181         if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1182
1183                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1184                         du = vmw_crtc_to_du(crtc);
1185                         du->hotspot_x = arg->xhot;
1186                         du->hotspot_y = arg->yhot;
1187                 }
1188
1189                 mutex_unlock(&dev->mode_config.mutex);
1190                 return 0;
1191         }
1192
1193         crtc = drm_crtc_find(dev, arg->crtc_id);
1194         if (!crtc) {
1195                 ret = -ENOENT;
1196                 goto out;
1197         }
1198
1199         du = vmw_crtc_to_du(crtc);
1200
1201         du->hotspot_x = arg->xhot;
1202         du->hotspot_y = arg->yhot;
1203
1204 out:
1205         mutex_unlock(&dev->mode_config.mutex);
1206
1207         return ret;
1208 }
1209
1210 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1211                         unsigned width, unsigned height, unsigned pitch,
1212                         unsigned bpp, unsigned depth)
1213 {
1214         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1215                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1216         else if (vmw_fifo_have_pitchlock(vmw_priv))
1217                 vmw_mmio_write(pitch, vmw_priv->mmio_virt +
1218                                SVGA_FIFO_PITCHLOCK);
1219         vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1220         vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1221         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1222
1223         if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1224                 DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1225                           depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1226                 return -EINVAL;
1227         }
1228
1229         return 0;
1230 }
1231
1232 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1233 {
1234         struct vmw_vga_topology_state *save;
1235         uint32_t i;
1236
1237         vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1238         vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1239         vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1240         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1241                 vmw_priv->vga_pitchlock =
1242                   vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1243         else if (vmw_fifo_have_pitchlock(vmw_priv))
1244                 vmw_priv->vga_pitchlock = vmw_mmio_read(vmw_priv->mmio_virt +
1245                                                         SVGA_FIFO_PITCHLOCK);
1246
1247         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1248                 return 0;
1249
1250         vmw_priv->num_displays = vmw_read(vmw_priv,
1251                                           SVGA_REG_NUM_GUEST_DISPLAYS);
1252
1253         if (vmw_priv->num_displays == 0)
1254                 vmw_priv->num_displays = 1;
1255
1256         for (i = 0; i < vmw_priv->num_displays; ++i) {
1257                 save = &vmw_priv->vga_save[i];
1258                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1259                 save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1260                 save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1261                 save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1262                 save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1263                 save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1264                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1265                 if (i == 0 && vmw_priv->num_displays == 1 &&
1266                     save->width == 0 && save->height == 0) {
1267
1268                         /*
1269                          * It should be fairly safe to assume that these
1270                          * values are uninitialized.
1271                          */
1272
1273                         save->width = vmw_priv->vga_width - save->pos_x;
1274                         save->height = vmw_priv->vga_height - save->pos_y;
1275                 }
1276         }
1277
1278         return 0;
1279 }
1280
1281 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1282 {
1283         struct vmw_vga_topology_state *save;
1284         uint32_t i;
1285
1286         vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1287         vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1288         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1289         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1290                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1291                           vmw_priv->vga_pitchlock);
1292         else if (vmw_fifo_have_pitchlock(vmw_priv))
1293                 vmw_mmio_write(vmw_priv->vga_pitchlock,
1294                                vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1295
1296         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1297                 return 0;
1298
1299         for (i = 0; i < vmw_priv->num_displays; ++i) {
1300                 save = &vmw_priv->vga_save[i];
1301                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1302                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1303                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1304                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1305                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1306                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1307                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1308         }
1309
1310         return 0;
1311 }
1312
1313 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1314                                 uint32_t pitch,
1315                                 uint32_t height)
1316 {
1317         return ((u64) pitch * (u64) height) < (u64)
1318                 ((dev_priv->active_display_unit == vmw_du_screen_target) ?
1319                  dev_priv->prim_bb_mem : dev_priv->vram_size);
1320 }
1321
1322
1323 /**
1324  * Function called by DRM code called with vbl_lock held.
1325  */
1326 u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
1327 {
1328         return 0;
1329 }
1330
1331 /**
1332  * Function called by DRM code called with vbl_lock held.
1333  */
1334 int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe)
1335 {
1336         return -ENOSYS;
1337 }
1338
1339 /**
1340  * Function called by DRM code called with vbl_lock held.
1341  */
1342 void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe)
1343 {
1344 }
1345
1346
1347 /*
1348  * Small shared kms functions.
1349  */
1350
1351 static int vmw_du_update_layout(struct vmw_private *dev_priv, unsigned num,
1352                          struct drm_vmw_rect *rects)
1353 {
1354         struct drm_device *dev = dev_priv->dev;
1355         struct vmw_display_unit *du;
1356         struct drm_connector *con;
1357
1358         mutex_lock(&dev->mode_config.mutex);
1359
1360 #if 0
1361         {
1362                 unsigned int i;
1363
1364                 DRM_INFO("%s: new layout ", __func__);
1365                 for (i = 0; i < num; i++)
1366                         DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
1367                                  rects[i].w, rects[i].h);
1368                 DRM_INFO("\n");
1369         }
1370 #endif
1371
1372         list_for_each_entry(con, &dev->mode_config.connector_list, head) {
1373                 du = vmw_connector_to_du(con);
1374                 if (num > du->unit) {
1375                         du->pref_width = rects[du->unit].w;
1376                         du->pref_height = rects[du->unit].h;
1377                         du->pref_active = true;
1378                         du->gui_x = rects[du->unit].x;
1379                         du->gui_y = rects[du->unit].y;
1380                         drm_object_property_set_value
1381                           (&con->base, dev->mode_config.suggested_x_property,
1382                            du->gui_x);
1383                         drm_object_property_set_value
1384                           (&con->base, dev->mode_config.suggested_y_property,
1385                            du->gui_y);
1386                 } else {
1387                         du->pref_width = 800;
1388                         du->pref_height = 600;
1389                         du->pref_active = false;
1390                         drm_object_property_set_value
1391                           (&con->base, dev->mode_config.suggested_x_property,
1392                            0);
1393                         drm_object_property_set_value
1394                           (&con->base, dev->mode_config.suggested_y_property,
1395                            0);
1396                 }
1397                 con->status = vmw_du_connector_detect(con, true);
1398         }
1399
1400         mutex_unlock(&dev->mode_config.mutex);
1401         drm_sysfs_hotplug_event(dev);
1402
1403         return 0;
1404 }
1405
1406 int vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
1407                           u16 *r, u16 *g, u16 *b,
1408                           uint32_t size)
1409 {
1410         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
1411         int i;
1412
1413         for (i = 0; i < size; i++) {
1414                 DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
1415                           r[i], g[i], b[i]);
1416                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
1417                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
1418                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
1419         }
1420
1421         return 0;
1422 }
1423
1424 int vmw_du_connector_dpms(struct drm_connector *connector, int mode)
1425 {
1426         return 0;
1427 }
1428
1429 enum drm_connector_status
1430 vmw_du_connector_detect(struct drm_connector *connector, bool force)
1431 {
1432         uint32_t num_displays;
1433         struct drm_device *dev = connector->dev;
1434         struct vmw_private *dev_priv = vmw_priv(dev);
1435         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1436
1437         num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
1438
1439         return ((vmw_connector_to_du(connector)->unit < num_displays &&
1440                  du->pref_active) ?
1441                 connector_status_connected : connector_status_disconnected);
1442 }
1443
1444 static struct drm_display_mode vmw_kms_connector_builtin[] = {
1445         /* 640x480@60Hz */
1446         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
1447                    752, 800, 0, 480, 489, 492, 525, 0,
1448                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1449         /* 800x600@60Hz */
1450         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
1451                    968, 1056, 0, 600, 601, 605, 628, 0,
1452                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1453         /* 1024x768@60Hz */
1454         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1455                    1184, 1344, 0, 768, 771, 777, 806, 0,
1456                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1457         /* 1152x864@75Hz */
1458         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1459                    1344, 1600, 0, 864, 865, 868, 900, 0,
1460                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1461         /* 1280x768@60Hz */
1462         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
1463                    1472, 1664, 0, 768, 771, 778, 798, 0,
1464                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1465         /* 1280x800@60Hz */
1466         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
1467                    1480, 1680, 0, 800, 803, 809, 831, 0,
1468                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
1469         /* 1280x960@60Hz */
1470         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
1471                    1488, 1800, 0, 960, 961, 964, 1000, 0,
1472                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1473         /* 1280x1024@60Hz */
1474         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
1475                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
1476                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1477         /* 1360x768@60Hz */
1478         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
1479                    1536, 1792, 0, 768, 771, 777, 795, 0,
1480                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1481         /* 1440x1050@60Hz */
1482         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
1483                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
1484                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1485         /* 1440x900@60Hz */
1486         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
1487                    1672, 1904, 0, 900, 903, 909, 934, 0,
1488                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1489         /* 1600x1200@60Hz */
1490         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
1491                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
1492                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1493         /* 1680x1050@60Hz */
1494         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
1495                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
1496                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1497         /* 1792x1344@60Hz */
1498         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
1499                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
1500                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1501         /* 1853x1392@60Hz */
1502         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
1503                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
1504                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1505         /* 1920x1200@60Hz */
1506         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
1507                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
1508                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1509         /* 1920x1440@60Hz */
1510         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
1511                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
1512                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1513         /* 2560x1600@60Hz */
1514         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
1515                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
1516                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1517         /* Terminate */
1518         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
1519 };
1520
1521 /**
1522  * vmw_guess_mode_timing - Provide fake timings for a
1523  * 60Hz vrefresh mode.
1524  *
1525  * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
1526  * members filled in.
1527  */
1528 void vmw_guess_mode_timing(struct drm_display_mode *mode)
1529 {
1530         mode->hsync_start = mode->hdisplay + 50;
1531         mode->hsync_end = mode->hsync_start + 50;
1532         mode->htotal = mode->hsync_end + 50;
1533
1534         mode->vsync_start = mode->vdisplay + 50;
1535         mode->vsync_end = mode->vsync_start + 50;
1536         mode->vtotal = mode->vsync_end + 50;
1537
1538         mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
1539         mode->vrefresh = drm_mode_vrefresh(mode);
1540 }
1541
1542
1543 int vmw_du_connector_fill_modes(struct drm_connector *connector,
1544                                 uint32_t max_width, uint32_t max_height)
1545 {
1546         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1547         struct drm_device *dev = connector->dev;
1548         struct vmw_private *dev_priv = vmw_priv(dev);
1549         struct drm_display_mode *mode = NULL;
1550         struct drm_display_mode *bmode;
1551         struct drm_display_mode prefmode = { DRM_MODE("preferred",
1552                 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
1553                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1554                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
1555         };
1556         int i;
1557         u32 assumed_bpp = 4;
1558
1559         if (dev_priv->assume_16bpp)
1560                 assumed_bpp = 2;
1561
1562         if (dev_priv->active_display_unit == vmw_du_screen_target) {
1563                 max_width  = min(max_width,  dev_priv->stdu_max_width);
1564                 max_height = min(max_height, dev_priv->stdu_max_height);
1565         }
1566
1567         /* Add preferred mode */
1568         mode = drm_mode_duplicate(dev, &prefmode);
1569         if (!mode)
1570                 return 0;
1571         mode->hdisplay = du->pref_width;
1572         mode->vdisplay = du->pref_height;
1573         vmw_guess_mode_timing(mode);
1574
1575         if (vmw_kms_validate_mode_vram(dev_priv,
1576                                         mode->hdisplay * assumed_bpp,
1577                                         mode->vdisplay)) {
1578                 drm_mode_probed_add(connector, mode);
1579         } else {
1580                 drm_mode_destroy(dev, mode);
1581                 mode = NULL;
1582         }
1583
1584         if (du->pref_mode) {
1585                 list_del_init(&du->pref_mode->head);
1586                 drm_mode_destroy(dev, du->pref_mode);
1587         }
1588
1589         /* mode might be null here, this is intended */
1590         du->pref_mode = mode;
1591
1592         for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
1593                 bmode = &vmw_kms_connector_builtin[i];
1594                 if (bmode->hdisplay > max_width ||
1595                     bmode->vdisplay > max_height)
1596                         continue;
1597
1598                 if (!vmw_kms_validate_mode_vram(dev_priv,
1599                                                 bmode->hdisplay * assumed_bpp,
1600                                                 bmode->vdisplay))
1601                         continue;
1602
1603                 mode = drm_mode_duplicate(dev, bmode);
1604                 if (!mode)
1605                         return 0;
1606                 mode->vrefresh = drm_mode_vrefresh(mode);
1607
1608                 drm_mode_probed_add(connector, mode);
1609         }
1610
1611         drm_mode_connector_list_update(connector);
1612         /* Move the prefered mode first, help apps pick the right mode. */
1613         drm_mode_sort(&connector->modes);
1614
1615         return 1;
1616 }
1617
1618 int vmw_du_connector_set_property(struct drm_connector *connector,
1619                                   struct drm_property *property,
1620                                   uint64_t val)
1621 {
1622         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1623         struct vmw_private *dev_priv = vmw_priv(connector->dev);
1624
1625         if (property == dev_priv->implicit_placement_property)
1626                 du->is_implicit = val;
1627
1628         return 0;
1629 }
1630
1631
1632 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
1633                                 struct drm_file *file_priv)
1634 {
1635         struct vmw_private *dev_priv = vmw_priv(dev);
1636         struct drm_vmw_update_layout_arg *arg =
1637                 (struct drm_vmw_update_layout_arg *)data;
1638         void __user *user_rects;
1639         struct drm_vmw_rect *rects;
1640         unsigned rects_size;
1641         int ret;
1642         int i;
1643         u64 total_pixels = 0;
1644         struct drm_mode_config *mode_config = &dev->mode_config;
1645         struct drm_vmw_rect bounding_box = {0};
1646
1647         if (!arg->num_outputs) {
1648                 struct drm_vmw_rect def_rect = {0, 0, 800, 600};
1649                 vmw_du_update_layout(dev_priv, 1, &def_rect);
1650                 return 0;
1651         }
1652
1653         rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
1654         rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
1655                         GFP_KERNEL);
1656         if (unlikely(!rects))
1657                 return -ENOMEM;
1658
1659         user_rects = (void __user *)(unsigned long)arg->rects;
1660         ret = copy_from_user(rects, user_rects, rects_size);
1661         if (unlikely(ret != 0)) {
1662                 DRM_ERROR("Failed to get rects.\n");
1663                 ret = -EFAULT;
1664                 goto out_free;
1665         }
1666
1667         for (i = 0; i < arg->num_outputs; ++i) {
1668                 if (rects[i].x < 0 ||
1669                     rects[i].y < 0 ||
1670                     rects[i].x + rects[i].w > mode_config->max_width ||
1671                     rects[i].y + rects[i].h > mode_config->max_height) {
1672                         DRM_ERROR("Invalid GUI layout.\n");
1673                         ret = -EINVAL;
1674                         goto out_free;
1675                 }
1676
1677                 /*
1678                  * bounding_box.w and bunding_box.h are used as
1679                  * lower-right coordinates
1680                  */
1681                 if (rects[i].x + rects[i].w > bounding_box.w)
1682                         bounding_box.w = rects[i].x + rects[i].w;
1683
1684                 if (rects[i].y + rects[i].h > bounding_box.h)
1685                         bounding_box.h = rects[i].y + rects[i].h;
1686
1687                 total_pixels += (u64) rects[i].w * (u64) rects[i].h;
1688         }
1689
1690         if (dev_priv->active_display_unit == vmw_du_screen_target) {
1691                 /*
1692                  * For Screen Targets, the limits for a toplogy are:
1693                  *      1. Bounding box (assuming 32bpp) must be < prim_bb_mem
1694                  *      2. Total pixels (assuming 32bpp) must be < prim_bb_mem
1695                  */
1696                 u64 bb_mem    = bounding_box.w * bounding_box.h * 4;
1697                 u64 pixel_mem = total_pixels * 4;
1698
1699                 if (bb_mem > dev_priv->prim_bb_mem) {
1700                         DRM_ERROR("Topology is beyond supported limits.\n");
1701                         ret = -EINVAL;
1702                         goto out_free;
1703                 }
1704
1705                 if (pixel_mem > dev_priv->prim_bb_mem) {
1706                         DRM_ERROR("Combined output size too large\n");
1707                         ret = -EINVAL;
1708                         goto out_free;
1709                 }
1710         }
1711
1712         vmw_du_update_layout(dev_priv, arg->num_outputs, rects);
1713
1714 out_free:
1715         kfree(rects);
1716         return ret;
1717 }
1718
1719 /**
1720  * vmw_kms_helper_dirty - Helper to build commands and perform actions based
1721  * on a set of cliprects and a set of display units.
1722  *
1723  * @dev_priv: Pointer to a device private structure.
1724  * @framebuffer: Pointer to the framebuffer on which to perform the actions.
1725  * @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL.
1726  * Cliprects are given in framebuffer coordinates.
1727  * @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must
1728  * be NULL. Cliprects are given in source coordinates.
1729  * @dest_x: X coordinate offset for the crtc / destination clip rects.
1730  * @dest_y: Y coordinate offset for the crtc / destination clip rects.
1731  * @num_clips: Number of cliprects in the @clips or @vclips array.
1732  * @increment: Integer with which to increment the clip counter when looping.
1733  * Used to skip a predetermined number of clip rects.
1734  * @dirty: Closure structure. See the description of struct vmw_kms_dirty.
1735  */
1736 int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
1737                          struct vmw_framebuffer *framebuffer,
1738                          const struct drm_clip_rect *clips,
1739                          const struct drm_vmw_rect *vclips,
1740                          s32 dest_x, s32 dest_y,
1741                          int num_clips,
1742                          int increment,
1743                          struct vmw_kms_dirty *dirty)
1744 {
1745         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
1746         struct drm_crtc *crtc;
1747         u32 num_units = 0;
1748         u32 i, k;
1749
1750         dirty->dev_priv = dev_priv;
1751
1752         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
1753                 if (crtc->primary->fb != &framebuffer->base)
1754                         continue;
1755                 units[num_units++] = vmw_crtc_to_du(crtc);
1756         }
1757
1758         for (k = 0; k < num_units; k++) {
1759                 struct vmw_display_unit *unit = units[k];
1760                 s32 crtc_x = unit->crtc.x;
1761                 s32 crtc_y = unit->crtc.y;
1762                 s32 crtc_width = unit->crtc.mode.hdisplay;
1763                 s32 crtc_height = unit->crtc.mode.vdisplay;
1764                 const struct drm_clip_rect *clips_ptr = clips;
1765                 const struct drm_vmw_rect *vclips_ptr = vclips;
1766
1767                 dirty->unit = unit;
1768                 if (dirty->fifo_reserve_size > 0) {
1769                         dirty->cmd = vmw_fifo_reserve(dev_priv,
1770                                                       dirty->fifo_reserve_size);
1771                         if (!dirty->cmd) {
1772                                 DRM_ERROR("Couldn't reserve fifo space "
1773                                           "for dirty blits.\n");
1774                                 return -ENOMEM;
1775                         }
1776                         memset(dirty->cmd, 0, dirty->fifo_reserve_size);
1777                 }
1778                 dirty->num_hits = 0;
1779                 for (i = 0; i < num_clips; i++, clips_ptr += increment,
1780                        vclips_ptr += increment) {
1781                         s32 clip_left;
1782                         s32 clip_top;
1783
1784                         /*
1785                          * Select clip array type. Note that integer type
1786                          * in @clips is unsigned short, whereas in @vclips
1787                          * it's 32-bit.
1788                          */
1789                         if (clips) {
1790                                 dirty->fb_x = (s32) clips_ptr->x1;
1791                                 dirty->fb_y = (s32) clips_ptr->y1;
1792                                 dirty->unit_x2 = (s32) clips_ptr->x2 + dest_x -
1793                                         crtc_x;
1794                                 dirty->unit_y2 = (s32) clips_ptr->y2 + dest_y -
1795                                         crtc_y;
1796                         } else {
1797                                 dirty->fb_x = vclips_ptr->x;
1798                                 dirty->fb_y = vclips_ptr->y;
1799                                 dirty->unit_x2 = dirty->fb_x + vclips_ptr->w +
1800                                         dest_x - crtc_x;
1801                                 dirty->unit_y2 = dirty->fb_y + vclips_ptr->h +
1802                                         dest_y - crtc_y;
1803                         }
1804
1805                         dirty->unit_x1 = dirty->fb_x + dest_x - crtc_x;
1806                         dirty->unit_y1 = dirty->fb_y + dest_y - crtc_y;
1807
1808                         /* Skip this clip if it's outside the crtc region */
1809                         if (dirty->unit_x1 >= crtc_width ||
1810                             dirty->unit_y1 >= crtc_height ||
1811                             dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0)
1812                                 continue;
1813
1814                         /* Clip right and bottom to crtc limits */
1815                         dirty->unit_x2 = min_t(s32, dirty->unit_x2,
1816                                                crtc_width);
1817                         dirty->unit_y2 = min_t(s32, dirty->unit_y2,
1818                                                crtc_height);
1819
1820                         /* Clip left and top to crtc limits */
1821                         clip_left = min_t(s32, dirty->unit_x1, 0);
1822                         clip_top = min_t(s32, dirty->unit_y1, 0);
1823                         dirty->unit_x1 -= clip_left;
1824                         dirty->unit_y1 -= clip_top;
1825                         dirty->fb_x -= clip_left;
1826                         dirty->fb_y -= clip_top;
1827
1828                         dirty->clip(dirty);
1829                 }
1830
1831                 dirty->fifo_commit(dirty);
1832         }
1833
1834         return 0;
1835 }
1836
1837 /**
1838  * vmw_kms_helper_buffer_prepare - Reserve and validate a buffer object before
1839  * command submission.
1840  *
1841  * @dev_priv. Pointer to a device private structure.
1842  * @buf: The buffer object
1843  * @interruptible: Whether to perform waits as interruptible.
1844  * @validate_as_mob: Whether the buffer should be validated as a MOB. If false,
1845  * The buffer will be validated as a GMR. Already pinned buffers will not be
1846  * validated.
1847  *
1848  * Returns 0 on success, negative error code on failure, -ERESTARTSYS if
1849  * interrupted by a signal.
1850  */
1851 int vmw_kms_helper_buffer_prepare(struct vmw_private *dev_priv,
1852                                   struct vmw_dma_buffer *buf,
1853                                   bool interruptible,
1854                                   bool validate_as_mob)
1855 {
1856         struct ttm_buffer_object *bo = &buf->base;
1857         int ret;
1858
1859         ttm_bo_reserve(bo, false, false, NULL);
1860         ret = vmw_validate_single_buffer(dev_priv, bo, interruptible,
1861                                          validate_as_mob);
1862         if (ret)
1863                 ttm_bo_unreserve(bo);
1864
1865         return ret;
1866 }
1867
1868 /**
1869  * vmw_kms_helper_buffer_revert - Undo the actions of
1870  * vmw_kms_helper_buffer_prepare.
1871  *
1872  * @res: Pointer to the buffer object.
1873  *
1874  * Helper to be used if an error forces the caller to undo the actions of
1875  * vmw_kms_helper_buffer_prepare.
1876  */
1877 void vmw_kms_helper_buffer_revert(struct vmw_dma_buffer *buf)
1878 {
1879         if (buf)
1880                 ttm_bo_unreserve(&buf->base);
1881 }
1882
1883 /**
1884  * vmw_kms_helper_buffer_finish - Unreserve and fence a buffer object after
1885  * kms command submission.
1886  *
1887  * @dev_priv: Pointer to a device private structure.
1888  * @file_priv: Pointer to a struct drm_file representing the caller's
1889  * connection. Must be set to NULL if @user_fence_rep is NULL, and conversely
1890  * if non-NULL, @user_fence_rep must be non-NULL.
1891  * @buf: The buffer object.
1892  * @out_fence:  Optional pointer to a fence pointer. If non-NULL, a
1893  * ref-counted fence pointer is returned here.
1894  * @user_fence_rep: Optional pointer to a user-space provided struct
1895  * drm_vmw_fence_rep. If provided, @file_priv must also be provided and the
1896  * function copies fence data to user-space in a fail-safe manner.
1897  */
1898 void vmw_kms_helper_buffer_finish(struct vmw_private *dev_priv,
1899                                   struct drm_file *file_priv,
1900                                   struct vmw_dma_buffer *buf,
1901                                   struct vmw_fence_obj **out_fence,
1902                                   struct drm_vmw_fence_rep __user *
1903                                   user_fence_rep)
1904 {
1905         struct vmw_fence_obj *fence;
1906         uint32_t handle;
1907         int ret;
1908
1909         ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
1910                                          file_priv ? &handle : NULL);
1911         if (buf)
1912                 vmw_fence_single_bo(&buf->base, fence);
1913         if (file_priv)
1914                 vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
1915                                             ret, user_fence_rep, fence,
1916                                             handle);
1917         if (out_fence)
1918                 *out_fence = fence;
1919         else
1920                 vmw_fence_obj_unreference(&fence);
1921
1922         vmw_kms_helper_buffer_revert(buf);
1923 }
1924
1925
1926 /**
1927  * vmw_kms_helper_resource_revert - Undo the actions of
1928  * vmw_kms_helper_resource_prepare.
1929  *
1930  * @res: Pointer to the resource. Typically a surface.
1931  *
1932  * Helper to be used if an error forces the caller to undo the actions of
1933  * vmw_kms_helper_resource_prepare.
1934  */
1935 void vmw_kms_helper_resource_revert(struct vmw_validation_ctx *ctx)
1936 {
1937         struct vmw_resource *res = ctx->res;
1938
1939         vmw_kms_helper_buffer_revert(ctx->buf);
1940         vmw_dmabuf_unreference(&ctx->buf);
1941         vmw_resource_unreserve(res, false, NULL, 0);
1942         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1943 }
1944
1945 /**
1946  * vmw_kms_helper_resource_prepare - Reserve and validate a resource before
1947  * command submission.
1948  *
1949  * @res: Pointer to the resource. Typically a surface.
1950  * @interruptible: Whether to perform waits as interruptible.
1951  *
1952  * Reserves and validates also the backup buffer if a guest-backed resource.
1953  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
1954  * interrupted by a signal.
1955  */
1956 int vmw_kms_helper_resource_prepare(struct vmw_resource *res,
1957                                     bool interruptible,
1958                                     struct vmw_validation_ctx *ctx)
1959 {
1960         int ret = 0;
1961
1962         ctx->buf = NULL;
1963         ctx->res = res;
1964
1965         if (interruptible)
1966                 ret = mutex_lock_interruptible(&res->dev_priv->cmdbuf_mutex);
1967         else
1968                 mutex_lock(&res->dev_priv->cmdbuf_mutex);
1969
1970         if (unlikely(ret != 0))
1971                 return -ERESTARTSYS;
1972
1973         ret = vmw_resource_reserve(res, interruptible, false);
1974         if (ret)
1975                 goto out_unlock;
1976
1977         if (res->backup) {
1978                 ret = vmw_kms_helper_buffer_prepare(res->dev_priv, res->backup,
1979                                                     interruptible,
1980                                                     res->dev_priv->has_mob);
1981                 if (ret)
1982                         goto out_unreserve;
1983
1984                 ctx->buf = vmw_dmabuf_reference(res->backup);
1985         }
1986         ret = vmw_resource_validate(res);
1987         if (ret)
1988                 goto out_revert;
1989         return 0;
1990
1991 out_revert:
1992         vmw_kms_helper_buffer_revert(ctx->buf);
1993 out_unreserve:
1994         vmw_resource_unreserve(res, false, NULL, 0);
1995 out_unlock:
1996         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1997         return ret;
1998 }
1999
2000 /**
2001  * vmw_kms_helper_resource_finish - Unreserve and fence a resource after
2002  * kms command submission.
2003  *
2004  * @res: Pointer to the resource. Typically a surface.
2005  * @out_fence: Optional pointer to a fence pointer. If non-NULL, a
2006  * ref-counted fence pointer is returned here.
2007  */
2008 void vmw_kms_helper_resource_finish(struct vmw_validation_ctx *ctx,
2009                                     struct vmw_fence_obj **out_fence)
2010 {
2011         struct vmw_resource *res = ctx->res;
2012
2013         if (ctx->buf || out_fence)
2014                 vmw_kms_helper_buffer_finish(res->dev_priv, NULL, ctx->buf,
2015                                              out_fence, NULL);
2016
2017         vmw_dmabuf_unreference(&ctx->buf);
2018         vmw_resource_unreserve(res, false, NULL, 0);
2019         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
2020 }
2021
2022 /**
2023  * vmw_kms_update_proxy - Helper function to update a proxy surface from
2024  * its backing MOB.
2025  *
2026  * @res: Pointer to the surface resource
2027  * @clips: Clip rects in framebuffer (surface) space.
2028  * @num_clips: Number of clips in @clips.
2029  * @increment: Integer with which to increment the clip counter when looping.
2030  * Used to skip a predetermined number of clip rects.
2031  *
2032  * This function makes sure the proxy surface is updated from its backing MOB
2033  * using the region given by @clips. The surface resource @res and its backing
2034  * MOB needs to be reserved and validated on call.
2035  */
2036 int vmw_kms_update_proxy(struct vmw_resource *res,
2037                          const struct drm_clip_rect *clips,
2038                          unsigned num_clips,
2039                          int increment)
2040 {
2041         struct vmw_private *dev_priv = res->dev_priv;
2042         struct drm_vmw_size *size = &vmw_res_to_srf(res)->base_size;
2043         struct {
2044                 SVGA3dCmdHeader header;
2045                 SVGA3dCmdUpdateGBImage body;
2046         } *cmd;
2047         SVGA3dBox *box;
2048         size_t copy_size = 0;
2049         int i;
2050
2051         if (!clips)
2052                 return 0;
2053
2054         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) * num_clips);
2055         if (!cmd) {
2056                 DRM_ERROR("Couldn't reserve fifo space for proxy surface "
2057                           "update.\n");
2058                 return -ENOMEM;
2059         }
2060
2061         for (i = 0; i < num_clips; ++i, clips += increment, ++cmd) {
2062                 box = &cmd->body.box;
2063
2064                 cmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
2065                 cmd->header.size = sizeof(cmd->body);
2066                 cmd->body.image.sid = res->id;
2067                 cmd->body.image.face = 0;
2068                 cmd->body.image.mipmap = 0;
2069
2070                 if (clips->x1 > size->width || clips->x2 > size->width ||
2071                     clips->y1 > size->height || clips->y2 > size->height) {
2072                         DRM_ERROR("Invalid clips outsize of framebuffer.\n");
2073                         return -EINVAL;
2074                 }
2075
2076                 box->x = clips->x1;
2077                 box->y = clips->y1;
2078                 box->z = 0;
2079                 box->w = clips->x2 - clips->x1;
2080                 box->h = clips->y2 - clips->y1;
2081                 box->d = 1;
2082
2083                 copy_size += sizeof(*cmd);
2084         }
2085
2086         vmw_fifo_commit(dev_priv, copy_size);
2087
2088         return 0;
2089 }
2090
2091 int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
2092                             unsigned unit,
2093                             u32 max_width,
2094                             u32 max_height,
2095                             struct drm_connector **p_con,
2096                             struct drm_crtc **p_crtc,
2097                             struct drm_display_mode **p_mode)
2098 {
2099         struct drm_connector *con;
2100         struct vmw_display_unit *du;
2101         struct drm_display_mode *mode;
2102         int i = 0;
2103
2104         list_for_each_entry(con, &dev_priv->dev->mode_config.connector_list,
2105                             head) {
2106                 if (i == unit)
2107                         break;
2108
2109                 ++i;
2110         }
2111
2112         if (&con->head == &dev_priv->dev->mode_config.connector_list) {
2113                 DRM_ERROR("Could not find initial display unit.\n");
2114                 return -EINVAL;
2115         }
2116
2117         if (list_empty(&con->modes))
2118                 (void) vmw_du_connector_fill_modes(con, max_width, max_height);
2119
2120         if (list_empty(&con->modes)) {
2121                 DRM_ERROR("Could not find initial display mode.\n");
2122                 return -EINVAL;
2123         }
2124
2125         du = vmw_connector_to_du(con);
2126         *p_con = con;
2127         *p_crtc = &du->crtc;
2128
2129         list_for_each_entry(mode, &con->modes, head) {
2130                 if (mode->type & DRM_MODE_TYPE_PREFERRED)
2131                         break;
2132         }
2133
2134         if (&mode->head == &con->modes) {
2135                 WARN_ONCE(true, "Could not find initial preferred mode.\n");
2136                 *p_mode = list_first_entry(&con->modes,
2137                                            struct drm_display_mode,
2138                                            head);
2139         } else {
2140                 *p_mode = mode;
2141         }
2142
2143         return 0;
2144 }
2145
2146 /**
2147  * vmw_kms_del_active - unregister a crtc binding to the implicit framebuffer
2148  *
2149  * @dev_priv: Pointer to a device private struct.
2150  * @du: The display unit of the crtc.
2151  */
2152 void vmw_kms_del_active(struct vmw_private *dev_priv,
2153                         struct vmw_display_unit *du)
2154 {
2155         mutex_lock(&dev_priv->global_kms_state_mutex);
2156         if (du->active_implicit) {
2157                 if (--(dev_priv->num_implicit) == 0)
2158                         dev_priv->implicit_fb = NULL;
2159                 du->active_implicit = false;
2160         }
2161         mutex_unlock(&dev_priv->global_kms_state_mutex);
2162 }
2163
2164 /**
2165  * vmw_kms_add_active - register a crtc binding to an implicit framebuffer
2166  *
2167  * @vmw_priv: Pointer to a device private struct.
2168  * @du: The display unit of the crtc.
2169  * @vfb: The implicit framebuffer
2170  *
2171  * Registers a binding to an implicit framebuffer.
2172  */
2173 void vmw_kms_add_active(struct vmw_private *dev_priv,
2174                         struct vmw_display_unit *du,
2175                         struct vmw_framebuffer *vfb)
2176 {
2177         mutex_lock(&dev_priv->global_kms_state_mutex);
2178         WARN_ON_ONCE(!dev_priv->num_implicit && dev_priv->implicit_fb);
2179
2180         if (!du->active_implicit && du->is_implicit) {
2181                 dev_priv->implicit_fb = vfb;
2182                 du->active_implicit = true;
2183                 dev_priv->num_implicit++;
2184         }
2185         mutex_unlock(&dev_priv->global_kms_state_mutex);
2186 }
2187
2188 /**
2189  * vmw_kms_screen_object_flippable - Check whether we can page-flip a crtc.
2190  *
2191  * @dev_priv: Pointer to device-private struct.
2192  * @crtc: The crtc we want to flip.
2193  *
2194  * Returns true or false depending whether it's OK to flip this crtc
2195  * based on the criterion that we must not have more than one implicit
2196  * frame-buffer at any one time.
2197  */
2198 bool vmw_kms_crtc_flippable(struct vmw_private *dev_priv,
2199                             struct drm_crtc *crtc)
2200 {
2201         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
2202         bool ret;
2203
2204         mutex_lock(&dev_priv->global_kms_state_mutex);
2205         ret = !du->is_implicit || dev_priv->num_implicit == 1;
2206         mutex_unlock(&dev_priv->global_kms_state_mutex);
2207
2208         return ret;
2209 }
2210
2211 /**
2212  * vmw_kms_update_implicit_fb - Update the implicit fb.
2213  *
2214  * @dev_priv: Pointer to device-private struct.
2215  * @crtc: The crtc the new implicit frame-buffer is bound to.
2216  */
2217 void vmw_kms_update_implicit_fb(struct vmw_private *dev_priv,
2218                                 struct drm_crtc *crtc)
2219 {
2220         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
2221         struct vmw_framebuffer *vfb;
2222
2223         mutex_lock(&dev_priv->global_kms_state_mutex);
2224
2225         if (!du->is_implicit)
2226                 goto out_unlock;
2227
2228         vfb = vmw_framebuffer_to_vfb(crtc->primary->fb);
2229         WARN_ON_ONCE(dev_priv->num_implicit != 1 &&
2230                      dev_priv->implicit_fb != vfb);
2231
2232         dev_priv->implicit_fb = vfb;
2233 out_unlock:
2234         mutex_unlock(&dev_priv->global_kms_state_mutex);
2235 }
2236
2237 /**
2238  * vmw_kms_create_implicit_placement_proparty - Set up the implicit placement
2239  * property.
2240  *
2241  * @dev_priv: Pointer to a device private struct.
2242  * @immutable: Whether the property is immutable.
2243  *
2244  * Sets up the implicit placement property unless it's already set up.
2245  */
2246 void
2247 vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv,
2248                                            bool immutable)
2249 {
2250         if (dev_priv->implicit_placement_property)
2251                 return;
2252
2253         dev_priv->implicit_placement_property =
2254                 drm_property_create_range(dev_priv->dev,
2255                                           immutable ?
2256                                           DRM_MODE_PROP_IMMUTABLE : 0,
2257                                           "implicit_placement", 0, 1);
2258
2259 }