drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

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