drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "vmwgfx_kms.h"
  29
  30
  31 /* Might need a hrtimer here? */
  32 #define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)
  33
  34 void vmw_du_cleanup(struct vmw_display_unit *du)
  35 {
  36         if (du->cursor_surface)
  37                 vmw_surface_unreference(&du->cursor_surface);
  38         if (du->cursor_dmabuf)
  39                 vmw_dmabuf_unreference(&du->cursor_dmabuf);
  40         drm_connector_unregister(&du->connector);
  41         drm_crtc_cleanup(&du->crtc);
  42         drm_encoder_cleanup(&du->encoder);
  43         drm_connector_cleanup(&du->connector);
  44 }
  45
  46 /*
  47  * Display Unit Cursor functions
  48  */
  49
  50 int vmw_cursor_update_image(struct vmw_private *dev_priv,
  51                             u32 *image, u32 width, u32 height,
  52                             u32 hotspotX, u32 hotspotY)
  53 {
  54         struct {
  55                 u32 cmd;
  56                 SVGAFifoCmdDefineAlphaCursor cursor;
  57         } *cmd;
  58         u32 image_size = width * height * 4;
  59         u32 cmd_size = sizeof(*cmd) + image_size;
  60
  61         if (!image)
  62                 return -EINVAL;
  63
  64         cmd = vmw_fifo_reserve(dev_priv, cmd_size);
  65         if (unlikely(cmd == NULL)) {
  66                 DRM_ERROR("Fifo reserve failed.\n");
  67                 return -ENOMEM;
  68         }
  69
  70         memset(cmd, 0, sizeof(*cmd));
  71
  72         memcpy(&cmd[1], image, image_size);
  73
  74         cmd->cmd = SVGA_CMD_DEFINE_ALPHA_CURSOR;
  75         cmd->cursor.id = 0;
  76         cmd->cursor.width = width;
  77         cmd->cursor.height = height;
  78         cmd->cursor.hotspotX = hotspotX;
  79         cmd->cursor.hotspotY = hotspotY;
  80
  81         vmw_fifo_commit_flush(dev_priv, cmd_size);
  82
  83         return 0;
  84 }
  85
  86 int vmw_cursor_update_dmabuf(struct vmw_private *dev_priv,
  87                              struct vmw_dma_buffer *dmabuf,
  88                              u32 width, u32 height,
  89                              u32 hotspotX, u32 hotspotY)
  90 {
  91         struct ttm_bo_kmap_obj map;
  92         unsigned long kmap_offset;
  93         unsigned long kmap_num;
  94         void *virtual;
  95         bool dummy;
  96         int ret;
  97
  98         kmap_offset = 0;
  99         kmap_num = (width*height*4 + PAGE_SIZE - 1) >> PAGE_SHIFT;
 100
 101         ret = ttm_bo_reserve(&dmabuf->base, true, false, false, NULL);
 102         if (unlikely(ret != 0)) {
 103                 DRM_ERROR("reserve failed\n");
 104                 return -EINVAL;
 105         }
 106
 107         ret = ttm_bo_kmap(&dmabuf->base, kmap_offset, kmap_num, &map);
 108         if (unlikely(ret != 0))
 109                 goto err_unreserve;
 110
 111         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 112         ret = vmw_cursor_update_image(dev_priv, virtual, width, height,
 113                                       hotspotX, hotspotY);
 114
 115         ttm_bo_kunmap(&map);
 116 err_unreserve:
 117         ttm_bo_unreserve(&dmabuf->base);
 118
 119         return ret;
 120 }
 121
 122
 123 void vmw_cursor_update_position(struct vmw_private *dev_priv,
 124                                 bool show, int x, int y)
 125 {
 126         u32 *fifo_mem = dev_priv->mmio_virt;
 127         uint32_t count;
 128
 129         vmw_mmio_write(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
 130         vmw_mmio_write(x, fifo_mem + SVGA_FIFO_CURSOR_X);
 131         vmw_mmio_write(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
 132         count = vmw_mmio_read(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 133         vmw_mmio_write(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 134 }
 135
 136
 137 /*
 138  * vmw_du_crtc_cursor_set2 - Driver cursor_set2 callback.
 139  */
 140 int vmw_du_crtc_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
 141                             uint32_t handle, uint32_t width, uint32_t height,
 142                             int32_t hot_x, int32_t hot_y)
 143 {
 144         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 145         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 146         struct vmw_surface *surface = NULL;
 147         struct vmw_dma_buffer *dmabuf = NULL;
 148         s32 hotspot_x, hotspot_y;
 149         int ret;
 150
 151         /*
 152          * FIXME: Unclear whether there's any global state touched by the
 153          * cursor_set function, especially vmw_cursor_update_position looks
 154          * suspicious. For now take the easy route and reacquire all locks. We
 155          * can do this since the caller in the drm core doesn't check anything
 156          * which is protected by any looks.
 157          */
 158         drm_modeset_unlock_crtc(crtc);
 159         drm_modeset_lock_all(dev_priv->dev);
 160         hotspot_x = hot_x + du->hotspot_x;
 161         hotspot_y = hot_y + du->hotspot_y;
 162
 163         /* A lot of the code assumes this */
 164         if (handle && (width != 64 || height != 64)) {
 165                 ret = -EINVAL;
 166                 goto out;
 167         }
 168
 169         if (handle) {
 170                 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 171
 172                 ret = vmw_user_lookup_handle(dev_priv, tfile,
 173                                              handle, &surface, &dmabuf);
 174                 if (ret) {
 175                         DRM_ERROR("failed to find surface or dmabuf: %i\n", ret);
 176                         ret = -EINVAL;
 177                         goto out;
 178                 }
 179         }
 180
 181         /* need to do this before taking down old image */
 182         if (surface && !surface->snooper.image) {
 183                 DRM_ERROR("surface not suitable for cursor\n");
 184                 vmw_surface_unreference(&surface);
 185                 ret = -EINVAL;
 186                 goto out;
 187         }
 188
 189         /* takedown old cursor */
 190         if (du->cursor_surface) {
 191                 du->cursor_surface->snooper.crtc = NULL;
 192                 vmw_surface_unreference(&du->cursor_surface);
 193         }
 194         if (du->cursor_dmabuf)
 195                 vmw_dmabuf_unreference(&du->cursor_dmabuf);
 196
 197         /* setup new image */
 198         ret = 0;
 199         if (surface) {
 200                 /* vmw_user_surface_lookup takes one reference */
 201                 du->cursor_surface = surface;
 202
 203                 du->cursor_surface->snooper.crtc = crtc;
 204                 du->cursor_age = du->cursor_surface->snooper.age;
 205                 ret = vmw_cursor_update_image(dev_priv, surface->snooper.image,
 206                                               64, 64, hotspot_x, hotspot_y);
 207         } else if (dmabuf) {
 208                 /* vmw_user_surface_lookup takes one reference */
 209                 du->cursor_dmabuf = dmabuf;
 210
 211                 ret = vmw_cursor_update_dmabuf(dev_priv, dmabuf, width, height,
 212                                                hotspot_x, hotspot_y);
 213         } else {
 214                 vmw_cursor_update_position(dev_priv, false, 0, 0);
 215                 goto out;
 216         }
 217
 218         if (!ret) {
 219                 vmw_cursor_update_position(dev_priv, true,
 220                                            du->cursor_x + hotspot_x,
 221                                            du->cursor_y + hotspot_y);
 222                 du->core_hotspot_x = hot_x;
 223                 du->core_hotspot_y = hot_y;
 224         }
 225
 226 out:
 227         drm_modeset_unlock_all(dev_priv->dev);
 228         drm_modeset_lock_crtc(crtc, crtc->cursor);
 229
 230         return ret;
 231 }
 232
 233 int vmw_du_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
 234 {
 235         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 236         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 237         bool shown = du->cursor_surface || du->cursor_dmabuf ? true : false;
 238
 239         du->cursor_x = x + crtc->x;
 240         du->cursor_y = y + crtc->y;
 241
 242         /*
 243          * FIXME: Unclear whether there's any global state touched by the
 244          * cursor_set function, especially vmw_cursor_update_position looks
 245          * suspicious. For now take the easy route and reacquire all locks. We
 246          * can do this since the caller in the drm core doesn't check anything
 247          * which is protected by any looks.
 248          */
 249         drm_modeset_unlock_crtc(crtc);
 250         drm_modeset_lock_all(dev_priv->dev);
 251
 252         vmw_cursor_update_position(dev_priv, shown,
 253                                    du->cursor_x + du->hotspot_x +
 254                                    du->core_hotspot_x,
 255                                    du->cursor_y + du->hotspot_y +
 256                                    du->core_hotspot_y);
 257
 258         drm_modeset_unlock_all(dev_priv->dev);
 259         drm_modeset_lock_crtc(crtc, crtc->cursor);
 260
 261         return 0;
 262 }
 263
 264 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
 265                           struct ttm_object_file *tfile,
 266                           struct ttm_buffer_object *bo,
 267                           SVGA3dCmdHeader *header)
 268 {
 269         struct ttm_bo_kmap_obj map;
 270         unsigned long kmap_offset;
 271         unsigned long kmap_num;
 272         SVGA3dCopyBox *box;
 273         unsigned box_count;
 274         void *virtual;
 275         bool dummy;
 276         struct vmw_dma_cmd {
 277                 SVGA3dCmdHeader header;
 278                 SVGA3dCmdSurfaceDMA dma;
 279         } *cmd;
 280         int i, ret;
 281
 282         cmd = container_of(header, struct vmw_dma_cmd, header);
 283
 284         /* No snooper installed */
 285         if (!srf->snooper.image)
 286                 return;
 287
 288         if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
 289                 DRM_ERROR("face and mipmap for cursors should never != 0\n");
 290                 return;
 291         }
 292
 293         if (cmd->header.size < 64) {
 294                 DRM_ERROR("at least one full copy box must be given\n");
 295                 return;
 296         }
 297
 298         box = (SVGA3dCopyBox *)&cmd[1];
 299         box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
 300                         sizeof(SVGA3dCopyBox);
 301
 302         if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
 303             box->x != 0    || box->y != 0    || box->z != 0    ||
 304             box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
 305             box->d != 1    || box_count != 1) {
 306                 /* TODO handle none page aligned offsets */
 307                 /* TODO handle more dst & src != 0 */
 308                 /* TODO handle more then one copy */
 309                 DRM_ERROR("Cant snoop dma request for cursor!\n");
 310                 DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
 311                           box->srcx, box->srcy, box->srcz,
 312                           box->x, box->y, box->z,
 313                           box->w, box->h, box->d, box_count,
 314                           cmd->dma.guest.ptr.offset);
 315                 return;
 316         }
 317
 318         kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
 319         kmap_num = (64*64*4) >> PAGE_SHIFT;
 320
 321         ret = ttm_bo_reserve(bo, true, false, false, NULL);
 322         if (unlikely(ret != 0)) {
 323                 DRM_ERROR("reserve failed\n");
 324                 return;
 325         }
 326
 327         ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
 328         if (unlikely(ret != 0))
 329                 goto err_unreserve;
 330
 331         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 332
 333         if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
 334                 memcpy(srf->snooper.image, virtual, 64*64*4);
 335         } else {
 336                 /* Image is unsigned pointer. */
 337                 for (i = 0; i < box->h; i++)
 338                         memcpy(srf->snooper.image + i * 64,
 339                                virtual + i * cmd->dma.guest.pitch,
 340                                box->w * 4);
 341         }
 342
 343         srf->snooper.age++;
 344
 345         ttm_bo_kunmap(&map);
 346 err_unreserve:
 347         ttm_bo_unreserve(bo);
 348 }
 349
 350 /**
 351  * vmw_kms_legacy_hotspot_clear - Clear legacy hotspots
 352  *
 353  * @dev_priv: Pointer to the device private struct.
 354  *
 355  * Clears all legacy hotspots.
 356  */
 357 void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv)
 358 {
 359         struct drm_device *dev = dev_priv->dev;
 360         struct vmw_display_unit *du;
 361         struct drm_crtc *crtc;
 362
 363         drm_modeset_lock_all(dev);
 364         drm_for_each_crtc(crtc, dev) {
 365                 du = vmw_crtc_to_du(crtc);
 366
 367                 du->hotspot_x = 0;
 368                 du->hotspot_y = 0;
 369         }
 370         drm_modeset_unlock_all(dev);
 371 }
 372
 373 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
 374 {
 375         struct drm_device *dev = dev_priv->dev;
 376         struct vmw_display_unit *du;
 377         struct drm_crtc *crtc;
 378
 379         mutex_lock(&dev->mode_config.mutex);
 380
 381         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 382                 du = vmw_crtc_to_du(crtc);
 383                 if (!du->cursor_surface ||
 384                     du->cursor_age == du->cursor_surface->snooper.age)
 385                         continue;
 386
 387                 du->cursor_age = du->cursor_surface->snooper.age;
 388                 vmw_cursor_update_image(dev_priv,
 389                                         du->cursor_surface->snooper.image,
 390                                         64, 64,
 391                                         du->hotspot_x + du->core_hotspot_x,
 392                                         du->hotspot_y + du->core_hotspot_y);
 393         }
 394
 395         mutex_unlock(&dev->mode_config.mutex);
 396 }
 397
 398 /*
 399  * Generic framebuffer code
 400  */
 401
 402 /*
 403  * Surface framebuffer code
 404  */
 405
 406 static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
 407 {
 408         struct vmw_framebuffer_surface *vfbs =
 409                 vmw_framebuffer_to_vfbs(framebuffer);
 410
 411         drm_framebuffer_cleanup(framebuffer);
 412         vmw_surface_unreference(&vfbs->surface);
 413         if (vfbs->base.user_obj)
 414                 ttm_base_object_unref(&vfbs->base.user_obj);
 415
 416         kfree(vfbs);
 417 }
 418
 419 static int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
 420                                   struct drm_file *file_priv,
 421                                   unsigned flags, unsigned color,
 422                                   struct drm_clip_rect *clips,
 423                                   unsigned num_clips)
 424 {
 425         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 426         struct vmw_framebuffer_surface *vfbs =
 427                 vmw_framebuffer_to_vfbs(framebuffer);
 428         struct drm_clip_rect norect;
 429         int ret, inc = 1;
 430
 431         /* Legacy Display Unit does not support 3D */
 432         if (dev_priv->active_display_unit == vmw_du_legacy)
 433                 return -EINVAL;
 434
 435         drm_modeset_lock_all(dev_priv->dev);
 436
 437         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 438         if (unlikely(ret != 0)) {
 439                 drm_modeset_unlock_all(dev_priv->dev);
 440                 return ret;
 441         }
 442
 443         if (!num_clips) {
 444                 num_clips = 1;
 445                 clips = &norect;
 446                 norect.x1 = norect.y1 = 0;
 447                 norect.x2 = framebuffer->width;
 448                 norect.y2 = framebuffer->height;
 449         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 450                 num_clips /= 2;
 451                 inc = 2; /* skip source rects */
 452         }
 453
 454         if (dev_priv->active_display_unit == vmw_du_screen_object)
 455                 ret = vmw_kms_sou_do_surface_dirty(dev_priv, &vfbs->base,
 456                                                    clips, NULL, NULL, 0, 0,
 457                                                    num_clips, inc, NULL);
 458         else
 459                 ret = vmw_kms_stdu_surface_dirty(dev_priv, &vfbs->base,
 460                                                  clips, NULL, NULL, 0, 0,
 461                                                  num_clips, inc, NULL);
 462
 463         vmw_fifo_flush(dev_priv, false);
 464         ttm_read_unlock(&dev_priv->reservation_sem);
 465
 466         drm_modeset_unlock_all(dev_priv->dev);
 467
 468         return 0;
 469 }
 470
 471 /**
 472  * vmw_kms_readback - Perform a readback from the screen system to
 473  * a dma-buffer backed framebuffer.
 474  *
 475  * @dev_priv: Pointer to the device private structure.
 476  * @file_priv: Pointer to a struct drm_file identifying the caller.
 477  * Must be set to NULL if @user_fence_rep is NULL.
 478  * @vfb: Pointer to the dma-buffer backed framebuffer.
 479  * @user_fence_rep: User-space provided structure for fence information.
 480  * Must be set to non-NULL if @file_priv is non-NULL.
 481  * @vclips: Array of clip rects.
 482  * @num_clips: Number of clip rects in @vclips.
 483  *
 484  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 485  * interrupted.
 486  */
 487 int vmw_kms_readback(struct vmw_private *dev_priv,
 488                      struct drm_file *file_priv,
 489                      struct vmw_framebuffer *vfb,
 490                      struct drm_vmw_fence_rep __user *user_fence_rep,
 491                      struct drm_vmw_rect *vclips,
 492                      uint32_t num_clips)
 493 {
 494         switch (dev_priv->active_display_unit) {
 495         case vmw_du_screen_object:
 496                 return vmw_kms_sou_readback(dev_priv, file_priv, vfb,
 497                                             user_fence_rep, vclips, num_clips);
 498         case vmw_du_screen_target:
 499                 return vmw_kms_stdu_dma(dev_priv, file_priv, vfb,
 500                                         user_fence_rep, NULL, vclips, num_clips,
 501                                         1, false, true);
 502         default:
 503                 WARN_ONCE(true,
 504                           "Readback called with invalid display system.\n");
 505 }
 506
 507         return -ENOSYS;
 508 }
 509
 510
 511 static 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 int vmw_kms_init(struct vmw_private *dev_priv)
1112 {
1113         struct drm_device *dev = dev_priv->dev;
1114         int ret;
1115
1116         drm_mode_config_init(dev);
1117         dev->mode_config.funcs = &vmw_kms_funcs;
1118         dev->mode_config.min_width = 1;
1119         dev->mode_config.min_height = 1;
1120         dev->mode_config.max_width = dev_priv->texture_max_width;
1121         dev->mode_config.max_height = dev_priv->texture_max_height;
1122
1123         ret = vmw_kms_stdu_init_display(dev_priv);
1124         if (ret) {
1125                 ret = vmw_kms_sou_init_display(dev_priv);
1126                 if (ret) /* Fallback */
1127                         ret = vmw_kms_ldu_init_display(dev_priv);
1128         }
1129
1130         return ret;
1131 }
1132
1133 int vmw_kms_close(struct vmw_private *dev_priv)
1134 {
1135         int ret;
1136
1137         /*
1138          * Docs says we should take the lock before calling this function
1139          * but since it destroys encoders and our destructor calls
1140          * drm_encoder_cleanup which takes the lock we deadlock.
1141          */
1142         drm_mode_config_cleanup(dev_priv->dev);
1143         if (dev_priv->active_display_unit == vmw_du_screen_object)
1144                 ret = vmw_kms_sou_close_display(dev_priv);
1145         else if (dev_priv->active_display_unit == vmw_du_screen_target)
1146                 ret = vmw_kms_stdu_close_display(dev_priv);
1147         else
1148                 ret = vmw_kms_ldu_close_display(dev_priv);
1149
1150         return ret;
1151 }
1152
1153 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1154                                 struct drm_file *file_priv)
1155 {
1156         struct drm_vmw_cursor_bypass_arg *arg = data;
1157         struct vmw_display_unit *du;
1158         struct drm_crtc *crtc;
1159         int ret = 0;
1160
1161
1162         mutex_lock(&dev->mode_config.mutex);
1163         if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1164
1165                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1166                         du = vmw_crtc_to_du(crtc);
1167                         du->hotspot_x = arg->xhot;
1168                         du->hotspot_y = arg->yhot;
1169                 }
1170
1171                 mutex_unlock(&dev->mode_config.mutex);
1172                 return 0;
1173         }
1174
1175         crtc = drm_crtc_find(dev, arg->crtc_id);
1176         if (!crtc) {
1177                 ret = -ENOENT;
1178                 goto out;
1179         }
1180
1181         du = vmw_crtc_to_du(crtc);
1182
1183         du->hotspot_x = arg->xhot;
1184         du->hotspot_y = arg->yhot;
1185
1186 out:
1187         mutex_unlock(&dev->mode_config.mutex);
1188
1189         return ret;
1190 }
1191
1192 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1193                         unsigned width, unsigned height, unsigned pitch,
1194                         unsigned bpp, unsigned depth)
1195 {
1196         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1197                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1198         else if (vmw_fifo_have_pitchlock(vmw_priv))
1199                 vmw_mmio_write(pitch, vmw_priv->mmio_virt +
1200                                SVGA_FIFO_PITCHLOCK);
1201         vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1202         vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1203         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1204
1205         if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1206                 DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1207                           depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1208                 return -EINVAL;
1209         }
1210
1211         return 0;
1212 }
1213
1214 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1215 {
1216         struct vmw_vga_topology_state *save;
1217         uint32_t i;
1218
1219         vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1220         vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1221         vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1222         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1223                 vmw_priv->vga_pitchlock =
1224                   vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1225         else if (vmw_fifo_have_pitchlock(vmw_priv))
1226                 vmw_priv->vga_pitchlock = vmw_mmio_read(vmw_priv->mmio_virt +
1227                                                         SVGA_FIFO_PITCHLOCK);
1228
1229         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1230                 return 0;
1231
1232         vmw_priv->num_displays = vmw_read(vmw_priv,
1233                                           SVGA_REG_NUM_GUEST_DISPLAYS);
1234
1235         if (vmw_priv->num_displays == 0)
1236                 vmw_priv->num_displays = 1;
1237
1238         for (i = 0; i < vmw_priv->num_displays; ++i) {
1239                 save = &vmw_priv->vga_save[i];
1240                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1241                 save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1242                 save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1243                 save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1244                 save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1245                 save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1246                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1247                 if (i == 0 && vmw_priv->num_displays == 1 &&
1248                     save->width == 0 && save->height == 0) {
1249
1250                         /*
1251                          * It should be fairly safe to assume that these
1252                          * values are uninitialized.
1253                          */
1254
1255                         save->width = vmw_priv->vga_width - save->pos_x;
1256                         save->height = vmw_priv->vga_height - save->pos_y;
1257                 }
1258         }
1259
1260         return 0;
1261 }
1262
1263 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1264 {
1265         struct vmw_vga_topology_state *save;
1266         uint32_t i;
1267
1268         vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1269         vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1270         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1271         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1272                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1273                           vmw_priv->vga_pitchlock);
1274         else if (vmw_fifo_have_pitchlock(vmw_priv))
1275                 vmw_mmio_write(vmw_priv->vga_pitchlock,
1276                                vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1277
1278         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1279                 return 0;
1280
1281         for (i = 0; i < vmw_priv->num_displays; ++i) {
1282                 save = &vmw_priv->vga_save[i];
1283                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1284                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1285                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1286                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1287                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1288                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1289                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1290         }
1291
1292         return 0;
1293 }
1294
1295 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1296                                 uint32_t pitch,
1297                                 uint32_t height)
1298 {
1299         return ((u64) pitch * (u64) height) < (u64)
1300                 ((dev_priv->active_display_unit == vmw_du_screen_target) ?
1301                  dev_priv->prim_bb_mem : dev_priv->vram_size);
1302 }
1303
1304
1305 /**
1306  * Function called by DRM code called with vbl_lock held.
1307  */
1308 u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
1309 {
1310         return 0;
1311 }
1312
1313 /**
1314  * Function called by DRM code called with vbl_lock held.
1315  */
1316 int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe)
1317 {
1318         return -ENOSYS;
1319 }
1320
1321 /**
1322  * Function called by DRM code called with vbl_lock held.
1323  */
1324 void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe)
1325 {
1326 }
1327
1328
1329 /*
1330  * Small shared kms functions.
1331  */
1332
1333 static int vmw_du_update_layout(struct vmw_private *dev_priv, unsigned num,
1334                          struct drm_vmw_rect *rects)
1335 {
1336         struct drm_device *dev = dev_priv->dev;
1337         struct vmw_display_unit *du;
1338         struct drm_connector *con;
1339
1340         mutex_lock(&dev->mode_config.mutex);
1341
1342 #if 0
1343         {
1344                 unsigned int i;
1345
1346                 DRM_INFO("%s: new layout ", __func__);
1347                 for (i = 0; i < num; i++)
1348                         DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
1349                                  rects[i].w, rects[i].h);
1350                 DRM_INFO("\n");
1351         }
1352 #endif
1353
1354         list_for_each_entry(con, &dev->mode_config.connector_list, head) {
1355                 du = vmw_connector_to_du(con);
1356                 if (num > du->unit) {
1357                         du->pref_width = rects[du->unit].w;
1358                         du->pref_height = rects[du->unit].h;
1359                         du->pref_active = true;
1360                         du->gui_x = rects[du->unit].x;
1361                         du->gui_y = rects[du->unit].y;
1362                 } else {
1363                         du->pref_width = 800;
1364                         du->pref_height = 600;
1365                         du->pref_active = false;
1366                 }
1367                 con->status = vmw_du_connector_detect(con, true);
1368         }
1369
1370         mutex_unlock(&dev->mode_config.mutex);
1371
1372         return 0;
1373 }
1374
1375 void vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
1376                            u16 *r, u16 *g, u16 *b,
1377                            uint32_t start, uint32_t size)
1378 {
1379         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
1380         int i;
1381
1382         for (i = 0; i < size; i++) {
1383                 DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
1384                           r[i], g[i], b[i]);
1385                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
1386                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
1387                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
1388         }
1389 }
1390
1391 int vmw_du_connector_dpms(struct drm_connector *connector, int mode)
1392 {
1393         return 0;
1394 }
1395
1396 enum drm_connector_status
1397 vmw_du_connector_detect(struct drm_connector *connector, bool force)
1398 {
1399         uint32_t num_displays;
1400         struct drm_device *dev = connector->dev;
1401         struct vmw_private *dev_priv = vmw_priv(dev);
1402         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1403
1404         num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
1405
1406         return ((vmw_connector_to_du(connector)->unit < num_displays &&
1407                  du->pref_active) ?
1408                 connector_status_connected : connector_status_disconnected);
1409 }
1410
1411 static struct drm_display_mode vmw_kms_connector_builtin[] = {
1412         /* 640x480@60Hz */
1413         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
1414                    752, 800, 0, 480, 489, 492, 525, 0,
1415                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1416         /* 800x600@60Hz */
1417         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
1418                    968, 1056, 0, 600, 601, 605, 628, 0,
1419                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1420         /* 1024x768@60Hz */
1421         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1422                    1184, 1344, 0, 768, 771, 777, 806, 0,
1423                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1424         /* 1152x864@75Hz */
1425         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1426                    1344, 1600, 0, 864, 865, 868, 900, 0,
1427                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1428         /* 1280x768@60Hz */
1429         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
1430                    1472, 1664, 0, 768, 771, 778, 798, 0,
1431                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1432         /* 1280x800@60Hz */
1433         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
1434                    1480, 1680, 0, 800, 803, 809, 831, 0,
1435                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
1436         /* 1280x960@60Hz */
1437         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
1438                    1488, 1800, 0, 960, 961, 964, 1000, 0,
1439                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1440         /* 1280x1024@60Hz */
1441         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
1442                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
1443                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1444         /* 1360x768@60Hz */
1445         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
1446                    1536, 1792, 0, 768, 771, 777, 795, 0,
1447                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1448         /* 1440x1050@60Hz */
1449         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
1450                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
1451                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1452         /* 1440x900@60Hz */
1453         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
1454                    1672, 1904, 0, 900, 903, 909, 934, 0,
1455                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1456         /* 1600x1200@60Hz */
1457         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
1458                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
1459                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1460         /* 1680x1050@60Hz */
1461         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
1462                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
1463                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1464         /* 1792x1344@60Hz */
1465         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
1466                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
1467                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1468         /* 1853x1392@60Hz */
1469         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
1470                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
1471                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1472         /* 1920x1200@60Hz */
1473         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
1474                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
1475                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1476         /* 1920x1440@60Hz */
1477         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
1478                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
1479                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1480         /* 2560x1600@60Hz */
1481         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
1482                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
1483                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1484         /* Terminate */
1485         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
1486 };
1487
1488 /**
1489  * vmw_guess_mode_timing - Provide fake timings for a
1490  * 60Hz vrefresh mode.
1491  *
1492  * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
1493  * members filled in.
1494  */
1495 void vmw_guess_mode_timing(struct drm_display_mode *mode)
1496 {
1497         mode->hsync_start = mode->hdisplay + 50;
1498         mode->hsync_end = mode->hsync_start + 50;
1499         mode->htotal = mode->hsync_end + 50;
1500
1501         mode->vsync_start = mode->vdisplay + 50;
1502         mode->vsync_end = mode->vsync_start + 50;
1503         mode->vtotal = mode->vsync_end + 50;
1504
1505         mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
1506         mode->vrefresh = drm_mode_vrefresh(mode);
1507 }
1508
1509
1510 int vmw_du_connector_fill_modes(struct drm_connector *connector,
1511                                 uint32_t max_width, uint32_t max_height)
1512 {
1513         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1514         struct drm_device *dev = connector->dev;
1515         struct vmw_private *dev_priv = vmw_priv(dev);
1516         struct drm_display_mode *mode = NULL;
1517         struct drm_display_mode *bmode;
1518         struct drm_display_mode prefmode = { DRM_MODE("preferred",
1519                 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
1520                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1521                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
1522         };
1523         int i;
1524         u32 assumed_bpp = 2;
1525
1526         /*
1527          * If using screen objects, then assume 32-bpp because that's what the
1528          * SVGA device is assuming
1529          */
1530         if (dev_priv->active_display_unit == vmw_du_screen_object)
1531                 assumed_bpp = 4;
1532
1533         if (dev_priv->active_display_unit == vmw_du_screen_target) {
1534                 max_width  = min(max_width,  dev_priv->stdu_max_width);
1535                 max_height = min(max_height, dev_priv->stdu_max_height);
1536         }
1537
1538         /* Add preferred mode */
1539         mode = drm_mode_duplicate(dev, &prefmode);
1540         if (!mode)
1541                 return 0;
1542         mode->hdisplay = du->pref_width;
1543         mode->vdisplay = du->pref_height;
1544         vmw_guess_mode_timing(mode);
1545
1546         if (vmw_kms_validate_mode_vram(dev_priv,
1547                                         mode->hdisplay * assumed_bpp,
1548                                         mode->vdisplay)) {
1549                 drm_mode_probed_add(connector, mode);
1550         } else {
1551                 drm_mode_destroy(dev, mode);
1552                 mode = NULL;
1553         }
1554
1555         if (du->pref_mode) {
1556                 list_del_init(&du->pref_mode->head);
1557                 drm_mode_destroy(dev, du->pref_mode);
1558         }
1559
1560         /* mode might be null here, this is intended */
1561         du->pref_mode = mode;
1562
1563         for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
1564                 bmode = &vmw_kms_connector_builtin[i];
1565                 if (bmode->hdisplay > max_width ||
1566                     bmode->vdisplay > max_height)
1567                         continue;
1568
1569                 if (!vmw_kms_validate_mode_vram(dev_priv,
1570                                                 bmode->hdisplay * assumed_bpp,
1571                                                 bmode->vdisplay))
1572                         continue;
1573
1574                 mode = drm_mode_duplicate(dev, bmode);
1575                 if (!mode)
1576                         return 0;
1577                 mode->vrefresh = drm_mode_vrefresh(mode);
1578
1579                 drm_mode_probed_add(connector, mode);
1580         }
1581
1582         drm_mode_connector_list_update(connector);
1583         /* Move the prefered mode first, help apps pick the right mode. */
1584         drm_mode_sort(&connector->modes);
1585
1586         return 1;
1587 }
1588
1589 int vmw_du_connector_set_property(struct drm_connector *connector,
1590                                   struct drm_property *property,
1591                                   uint64_t val)
1592 {
1593         return 0;
1594 }
1595
1596
1597 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
1598                                 struct drm_file *file_priv)
1599 {
1600         struct vmw_private *dev_priv = vmw_priv(dev);
1601         struct drm_vmw_update_layout_arg *arg =
1602                 (struct drm_vmw_update_layout_arg *)data;
1603         void __user *user_rects;
1604         struct drm_vmw_rect *rects;
1605         unsigned rects_size;
1606         int ret;
1607         int i;
1608         u64 total_pixels = 0;
1609         struct drm_mode_config *mode_config = &dev->mode_config;
1610         struct drm_vmw_rect bounding_box = {0};
1611
1612         if (!arg->num_outputs) {
1613                 struct drm_vmw_rect def_rect = {0, 0, 800, 600};
1614                 vmw_du_update_layout(dev_priv, 1, &def_rect);
1615                 return 0;
1616         }
1617
1618         rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
1619         rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
1620                         GFP_KERNEL);
1621         if (unlikely(!rects))
1622                 return -ENOMEM;
1623
1624         user_rects = (void __user *)(unsigned long)arg->rects;
1625         ret = copy_from_user(rects, user_rects, rects_size);
1626         if (unlikely(ret != 0)) {
1627                 DRM_ERROR("Failed to get rects.\n");
1628                 ret = -EFAULT;
1629                 goto out_free;
1630         }
1631
1632         for (i = 0; i < arg->num_outputs; ++i) {
1633                 if (rects[i].x < 0 ||
1634                     rects[i].y < 0 ||
1635                     rects[i].x + rects[i].w > mode_config->max_width ||
1636                     rects[i].y + rects[i].h > mode_config->max_height) {
1637                         DRM_ERROR("Invalid GUI layout.\n");
1638                         ret = -EINVAL;
1639                         goto out_free;
1640                 }
1641
1642                 /*
1643                  * bounding_box.w and bunding_box.h are used as
1644                  * lower-right coordinates
1645                  */
1646                 if (rects[i].x + rects[i].w > bounding_box.w)
1647                         bounding_box.w = rects[i].x + rects[i].w;
1648
1649                 if (rects[i].y + rects[i].h > bounding_box.h)
1650                         bounding_box.h = rects[i].y + rects[i].h;
1651
1652                 total_pixels += (u64) rects[i].w * (u64) rects[i].h;
1653         }
1654
1655         if (dev_priv->active_display_unit == vmw_du_screen_target) {
1656                 /*
1657                  * For Screen Targets, the limits for a toplogy are:
1658                  *      1. Bounding box (assuming 32bpp) must be < prim_bb_mem
1659                  *      2. Total pixels (assuming 32bpp) must be < prim_bb_mem
1660                  */
1661                 u64 bb_mem    = bounding_box.w * bounding_box.h * 4;
1662                 u64 pixel_mem = total_pixels * 4;
1663
1664                 if (bb_mem > dev_priv->prim_bb_mem) {
1665                         DRM_ERROR("Topology is beyond supported limits.\n");
1666                         ret = -EINVAL;
1667                         goto out_free;
1668                 }
1669
1670                 if (pixel_mem > dev_priv->prim_bb_mem) {
1671                         DRM_ERROR("Combined output size too large\n");
1672                         ret = -EINVAL;
1673                         goto out_free;
1674                 }
1675         }
1676
1677         vmw_du_update_layout(dev_priv, arg->num_outputs, rects);
1678
1679 out_free:
1680         kfree(rects);
1681         return ret;
1682 }
1683
1684 /**
1685  * vmw_kms_helper_dirty - Helper to build commands and perform actions based
1686  * on a set of cliprects and a set of display units.
1687  *
1688  * @dev_priv: Pointer to a device private structure.
1689  * @framebuffer: Pointer to the framebuffer on which to perform the actions.
1690  * @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL.
1691  * Cliprects are given in framebuffer coordinates.
1692  * @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must
1693  * be NULL. Cliprects are given in source coordinates.
1694  * @dest_x: X coordinate offset for the crtc / destination clip rects.
1695  * @dest_y: Y coordinate offset for the crtc / destination clip rects.
1696  * @num_clips: Number of cliprects in the @clips or @vclips array.
1697  * @increment: Integer with which to increment the clip counter when looping.
1698  * Used to skip a predetermined number of clip rects.
1699  * @dirty: Closure structure. See the description of struct vmw_kms_dirty.
1700  */
1701 int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
1702                          struct vmw_framebuffer *framebuffer,
1703                          const struct drm_clip_rect *clips,
1704                          const struct drm_vmw_rect *vclips,
1705                          s32 dest_x, s32 dest_y,
1706                          int num_clips,
1707                          int increment,
1708                          struct vmw_kms_dirty *dirty)
1709 {
1710         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
1711         struct drm_crtc *crtc;
1712         u32 num_units = 0;
1713         u32 i, k;
1714
1715         dirty->dev_priv = dev_priv;
1716
1717         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
1718                 if (crtc->primary->fb != &framebuffer->base)
1719                         continue;
1720                 units[num_units++] = vmw_crtc_to_du(crtc);
1721         }
1722
1723         for (k = 0; k < num_units; k++) {
1724                 struct vmw_display_unit *unit = units[k];
1725                 s32 crtc_x = unit->crtc.x;
1726                 s32 crtc_y = unit->crtc.y;
1727                 s32 crtc_width = unit->crtc.mode.hdisplay;
1728                 s32 crtc_height = unit->crtc.mode.vdisplay;
1729                 const struct drm_clip_rect *clips_ptr = clips;
1730                 const struct drm_vmw_rect *vclips_ptr = vclips;
1731
1732                 dirty->unit = unit;
1733                 if (dirty->fifo_reserve_size > 0) {
1734                         dirty->cmd = vmw_fifo_reserve(dev_priv,
1735                                                       dirty->fifo_reserve_size);
1736                         if (!dirty->cmd) {
1737                                 DRM_ERROR("Couldn't reserve fifo space "
1738                                           "for dirty blits.\n");
1739                                 return -ENOMEM;
1740                         }
1741                         memset(dirty->cmd, 0, dirty->fifo_reserve_size);
1742                 }
1743                 dirty->num_hits = 0;
1744                 for (i = 0; i < num_clips; i++, clips_ptr += increment,
1745                        vclips_ptr += increment) {
1746                         s32 clip_left;
1747                         s32 clip_top;
1748
1749                         /*
1750                          * Select clip array type. Note that integer type
1751                          * in @clips is unsigned short, whereas in @vclips
1752                          * it's 32-bit.
1753                          */
1754                         if (clips) {
1755                                 dirty->fb_x = (s32) clips_ptr->x1;
1756                                 dirty->fb_y = (s32) clips_ptr->y1;
1757                                 dirty->unit_x2 = (s32) clips_ptr->x2 + dest_x -
1758                                         crtc_x;
1759                                 dirty->unit_y2 = (s32) clips_ptr->y2 + dest_y -
1760                                         crtc_y;
1761                         } else {
1762                                 dirty->fb_x = vclips_ptr->x;
1763                                 dirty->fb_y = vclips_ptr->y;
1764                                 dirty->unit_x2 = dirty->fb_x + vclips_ptr->w +
1765                                         dest_x - crtc_x;
1766                                 dirty->unit_y2 = dirty->fb_y + vclips_ptr->h +
1767                                         dest_y - crtc_y;
1768                         }
1769
1770                         dirty->unit_x1 = dirty->fb_x + dest_x - crtc_x;
1771                         dirty->unit_y1 = dirty->fb_y + dest_y - crtc_y;
1772
1773                         /* Skip this clip if it's outside the crtc region */
1774                         if (dirty->unit_x1 >= crtc_width ||
1775                             dirty->unit_y1 >= crtc_height ||
1776                             dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0)
1777                                 continue;
1778
1779                         /* Clip right and bottom to crtc limits */
1780                         dirty->unit_x2 = min_t(s32, dirty->unit_x2,
1781                                                crtc_width);
1782                         dirty->unit_y2 = min_t(s32, dirty->unit_y2,
1783                                                crtc_height);
1784
1785                         /* Clip left and top to crtc limits */
1786                         clip_left = min_t(s32, dirty->unit_x1, 0);
1787                         clip_top = min_t(s32, dirty->unit_y1, 0);
1788                         dirty->unit_x1 -= clip_left;
1789                         dirty->unit_y1 -= clip_top;
1790                         dirty->fb_x -= clip_left;
1791                         dirty->fb_y -= clip_top;
1792
1793                         dirty->clip(dirty);
1794                 }
1795
1796                 dirty->fifo_commit(dirty);
1797         }
1798
1799         return 0;
1800 }
1801
1802 /**
1803  * vmw_kms_helper_buffer_prepare - Reserve and validate a buffer object before
1804  * command submission.
1805  *
1806  * @dev_priv. Pointer to a device private structure.
1807  * @buf: The buffer object
1808  * @interruptible: Whether to perform waits as interruptible.
1809  * @validate_as_mob: Whether the buffer should be validated as a MOB. If false,
1810  * The buffer will be validated as a GMR. Already pinned buffers will not be
1811  * validated.
1812  *
1813  * Returns 0 on success, negative error code on failure, -ERESTARTSYS if
1814  * interrupted by a signal.
1815  */
1816 int vmw_kms_helper_buffer_prepare(struct vmw_private *dev_priv,
1817                                   struct vmw_dma_buffer *buf,
1818                                   bool interruptible,
1819                                   bool validate_as_mob)
1820 {
1821         struct ttm_buffer_object *bo = &buf->base;
1822         int ret;
1823
1824         ttm_bo_reserve(bo, false, false, interruptible, NULL);
1825         ret = vmw_validate_single_buffer(dev_priv, bo, interruptible,
1826                                          validate_as_mob);
1827         if (ret)
1828                 ttm_bo_unreserve(bo);
1829
1830         return ret;
1831 }
1832
1833 /**
1834  * vmw_kms_helper_buffer_revert - Undo the actions of
1835  * vmw_kms_helper_buffer_prepare.
1836  *
1837  * @res: Pointer to the buffer object.
1838  *
1839  * Helper to be used if an error forces the caller to undo the actions of
1840  * vmw_kms_helper_buffer_prepare.
1841  */
1842 void vmw_kms_helper_buffer_revert(struct vmw_dma_buffer *buf)
1843 {
1844         if (buf)
1845                 ttm_bo_unreserve(&buf->base);
1846 }
1847
1848 /**
1849  * vmw_kms_helper_buffer_finish - Unreserve and fence a buffer object after
1850  * kms command submission.
1851  *
1852  * @dev_priv: Pointer to a device private structure.
1853  * @file_priv: Pointer to a struct drm_file representing the caller's
1854  * connection. Must be set to NULL if @user_fence_rep is NULL, and conversely
1855  * if non-NULL, @user_fence_rep must be non-NULL.
1856  * @buf: The buffer object.
1857  * @out_fence:  Optional pointer to a fence pointer. If non-NULL, a
1858  * ref-counted fence pointer is returned here.
1859  * @user_fence_rep: Optional pointer to a user-space provided struct
1860  * drm_vmw_fence_rep. If provided, @file_priv must also be provided and the
1861  * function copies fence data to user-space in a fail-safe manner.
1862  */
1863 void vmw_kms_helper_buffer_finish(struct vmw_private *dev_priv,
1864                                   struct drm_file *file_priv,
1865                                   struct vmw_dma_buffer *buf,
1866                                   struct vmw_fence_obj **out_fence,
1867                                   struct drm_vmw_fence_rep __user *
1868                                   user_fence_rep)
1869 {
1870         struct vmw_fence_obj *fence;
1871         uint32_t handle;
1872         int ret;
1873
1874         ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
1875                                          file_priv ? &handle : NULL);
1876         if (buf)
1877                 vmw_fence_single_bo(&buf->base, fence);
1878         if (file_priv)
1879                 vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
1880                                             ret, user_fence_rep, fence,
1881                                             handle);
1882         if (out_fence)
1883                 *out_fence = fence;
1884         else
1885                 vmw_fence_obj_unreference(&fence);
1886
1887         vmw_kms_helper_buffer_revert(buf);
1888 }
1889
1890
1891 /**
1892  * vmw_kms_helper_resource_revert - Undo the actions of
1893  * vmw_kms_helper_resource_prepare.
1894  *
1895  * @res: Pointer to the resource. Typically a surface.
1896  *
1897  * Helper to be used if an error forces the caller to undo the actions of
1898  * vmw_kms_helper_resource_prepare.
1899  */
1900 void vmw_kms_helper_resource_revert(struct vmw_resource *res)
1901 {
1902         vmw_kms_helper_buffer_revert(res->backup);
1903         vmw_resource_unreserve(res, false, NULL, 0);
1904         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1905 }
1906
1907 /**
1908  * vmw_kms_helper_resource_prepare - Reserve and validate a resource before
1909  * command submission.
1910  *
1911  * @res: Pointer to the resource. Typically a surface.
1912  * @interruptible: Whether to perform waits as interruptible.
1913  *
1914  * Reserves and validates also the backup buffer if a guest-backed resource.
1915  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
1916  * interrupted by a signal.
1917  */
1918 int vmw_kms_helper_resource_prepare(struct vmw_resource *res,
1919                                     bool interruptible)
1920 {
1921         int ret = 0;
1922
1923         if (interruptible)
1924                 ret = mutex_lock_interruptible(&res->dev_priv->cmdbuf_mutex);
1925         else
1926                 mutex_lock(&res->dev_priv->cmdbuf_mutex);
1927
1928         if (unlikely(ret != 0))
1929                 return -ERESTARTSYS;
1930
1931         ret = vmw_resource_reserve(res, interruptible, false);
1932         if (ret)
1933                 goto out_unlock;
1934
1935         if (res->backup) {
1936                 ret = vmw_kms_helper_buffer_prepare(res->dev_priv, res->backup,
1937                                                     interruptible,
1938                                                     res->dev_priv->has_mob);
1939                 if (ret)
1940                         goto out_unreserve;
1941         }
1942         ret = vmw_resource_validate(res);
1943         if (ret)
1944                 goto out_revert;
1945         return 0;
1946
1947 out_revert:
1948         vmw_kms_helper_buffer_revert(res->backup);
1949 out_unreserve:
1950         vmw_resource_unreserve(res, false, NULL, 0);
1951 out_unlock:
1952         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1953         return ret;
1954 }
1955
1956 /**
1957  * vmw_kms_helper_resource_finish - Unreserve and fence a resource after
1958  * kms command submission.
1959  *
1960  * @res: Pointer to the resource. Typically a surface.
1961  * @out_fence: Optional pointer to a fence pointer. If non-NULL, a
1962  * ref-counted fence pointer is returned here.
1963  */
1964 void vmw_kms_helper_resource_finish(struct vmw_resource *res,
1965                              struct vmw_fence_obj **out_fence)
1966 {
1967         if (res->backup || out_fence)
1968                 vmw_kms_helper_buffer_finish(res->dev_priv, NULL, res->backup,
1969                                              out_fence, NULL);
1970
1971         vmw_resource_unreserve(res, false, NULL, 0);
1972         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1973 }
1974
1975 /**
1976  * vmw_kms_update_proxy - Helper function to update a proxy surface from
1977  * its backing MOB.
1978  *
1979  * @res: Pointer to the surface resource
1980  * @clips: Clip rects in framebuffer (surface) space.
1981  * @num_clips: Number of clips in @clips.
1982  * @increment: Integer with which to increment the clip counter when looping.
1983  * Used to skip a predetermined number of clip rects.
1984  *
1985  * This function makes sure the proxy surface is updated from its backing MOB
1986  * using the region given by @clips. The surface resource @res and its backing
1987  * MOB needs to be reserved and validated on call.
1988  */
1989 int vmw_kms_update_proxy(struct vmw_resource *res,
1990                          const struct drm_clip_rect *clips,
1991                          unsigned num_clips,
1992                          int increment)
1993 {
1994         struct vmw_private *dev_priv = res->dev_priv;
1995         struct drm_vmw_size *size = &vmw_res_to_srf(res)->base_size;
1996         struct {
1997                 SVGA3dCmdHeader header;
1998                 SVGA3dCmdUpdateGBImage body;
1999         } *cmd;
2000         SVGA3dBox *box;
2001         size_t copy_size = 0;
2002         int i;
2003
2004         if (!clips)
2005                 return 0;
2006
2007         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) * num_clips);
2008         if (!cmd) {
2009                 DRM_ERROR("Couldn't reserve fifo space for proxy surface "
2010                           "update.\n");
2011                 return -ENOMEM;
2012         }
2013
2014         for (i = 0; i < num_clips; ++i, clips += increment, ++cmd) {
2015                 box = &cmd->body.box;
2016
2017                 cmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
2018                 cmd->header.size = sizeof(cmd->body);
2019                 cmd->body.image.sid = res->id;
2020                 cmd->body.image.face = 0;
2021                 cmd->body.image.mipmap = 0;
2022
2023                 if (clips->x1 > size->width || clips->x2 > size->width ||
2024                     clips->y1 > size->height || clips->y2 > size->height) {
2025                         DRM_ERROR("Invalid clips outsize of framebuffer.\n");
2026                         return -EINVAL;
2027                 }
2028
2029                 box->x = clips->x1;
2030                 box->y = clips->y1;
2031                 box->z = 0;
2032                 box->w = clips->x2 - clips->x1;
2033                 box->h = clips->y2 - clips->y1;
2034                 box->d = 1;
2035
2036                 copy_size += sizeof(*cmd);
2037         }
2038
2039         vmw_fifo_commit(dev_priv, copy_size);
2040
2041         return 0;
2042 }
2043
2044 int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
2045                             unsigned unit,
2046                             u32 max_width,
2047                             u32 max_height,
2048                             struct drm_connector **p_con,
2049                             struct drm_crtc **p_crtc,
2050                             struct drm_display_mode **p_mode)
2051 {
2052         struct drm_connector *con;
2053         struct vmw_display_unit *du;
2054         struct drm_display_mode *mode;
2055         int i = 0;
2056
2057         list_for_each_entry(con, &dev_priv->dev->mode_config.connector_list,
2058                             head) {
2059                 if (i == unit)
2060                         break;
2061
2062                 ++i;
2063         }
2064
2065         if (i != unit) {
2066                 DRM_ERROR("Could not find initial display unit.\n");
2067                 return -EINVAL;
2068         }
2069
2070         if (list_empty(&con->modes))
2071                 (void) vmw_du_connector_fill_modes(con, max_width, max_height);
2072
2073         if (list_empty(&con->modes)) {
2074                 DRM_ERROR("Could not find initial display mode.\n");
2075                 return -EINVAL;
2076         }
2077
2078         du = vmw_connector_to_du(con);
2079         *p_con = con;
2080         *p_crtc = &du->crtc;
2081
2082         list_for_each_entry(mode, &con->modes, head) {
2083                 if (mode->type & DRM_MODE_TYPE_PREFERRED)
2084                         break;
2085         }
2086
2087         if (mode->type & DRM_MODE_TYPE_PREFERRED)
2088                 *p_mode = mode;
2089         else {
2090                 WARN_ONCE(true, "Could not find initial preferred mode.\n");
2091                 *p_mode = list_first_entry(&con->modes,
2092                                            struct drm_display_mode,
2093                                            head);
2094         }
2095
2096         return 0;
2097 }
2098
2099 /**
2100  * vmw_kms_del_active - unregister a crtc binding to the implicit framebuffer
2101  *
2102  * @dev_priv: Pointer to a device private struct.
2103  * @du: The display unit of the crtc.
2104  */
2105 void vmw_kms_del_active(struct vmw_private *dev_priv,
2106                         struct vmw_display_unit *du)
2107 {
2108         lockdep_assert_held_once(&dev_priv->dev->mode_config.mutex);
2109
2110         if (du->active_implicit) {
2111                 if (--(dev_priv->num_implicit) == 0)
2112                         dev_priv->implicit_fb = NULL;
2113                 du->active_implicit = false;
2114         }
2115 }
2116
2117 /**
2118  * vmw_kms_add_active - register a crtc binding to an implicit framebuffer
2119  *
2120  * @vmw_priv: Pointer to a device private struct.
2121  * @du: The display unit of the crtc.
2122  * @vfb: The implicit framebuffer
2123  *
2124  * Registers a binding to an implicit framebuffer.
2125  */
2126 void vmw_kms_add_active(struct vmw_private *dev_priv,
2127                         struct vmw_display_unit *du,
2128                         struct vmw_framebuffer *vfb)
2129 {
2130         lockdep_assert_held_once(&dev_priv->dev->mode_config.mutex);
2131
2132         WARN_ON_ONCE(!dev_priv->num_implicit && dev_priv->implicit_fb);
2133
2134         if (!du->active_implicit && du->is_implicit) {
2135                 dev_priv->implicit_fb = vfb;
2136                 du->active_implicit = true;
2137                 dev_priv->num_implicit++;
2138         }
2139 }
2140
2141 /**
2142  * vmw_kms_screen_object_flippable - Check whether we can page-flip a crtc.
2143  *
2144  * @dev_priv: Pointer to device-private struct.
2145  * @crtc: The crtc we want to flip.
2146  *
2147  * Returns true or false depending whether it's OK to flip this crtc
2148  * based on the criterion that we must not have more than one implicit
2149  * frame-buffer at any one time.
2150  */
2151 bool vmw_kms_crtc_flippable(struct vmw_private *dev_priv,
2152                             struct drm_crtc *crtc)
2153 {
2154         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
2155
2156         lockdep_assert_held_once(&dev_priv->dev->mode_config.mutex);
2157
2158         if (!du->is_implicit)
2159                 return true;
2160
2161         if (dev_priv->num_implicit != 1)
2162                 return false;
2163
2164         return true;
2165 }
2166
2167 /**
2168  * vmw_kms_update_implicit_fb - Update the implicit fb.
2169  *
2170  * @dev_priv: Pointer to device-private struct.
2171  * @crtc: The crtc the new implicit frame-buffer is bound to.
2172  */
2173 void vmw_kms_update_implicit_fb(struct vmw_private *dev_priv,
2174                                 struct drm_crtc *crtc)
2175 {
2176         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
2177         struct vmw_framebuffer *vfb;
2178
2179         lockdep_assert_held_once(&dev_priv->dev->mode_config.mutex);
2180
2181         if (!du->is_implicit)
2182                 return;
2183
2184         vfb = vmw_framebuffer_to_vfb(crtc->primary->fb);
2185         WARN_ON_ONCE(dev_priv->num_implicit != 1 &&
2186                      dev_priv->implicit_fb != vfb);
2187
2188         dev_priv->implicit_fb = vfb;
2189 }