drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009-2014 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "vmwgfx_kms.h"
  29
  30
  31 /* Might need a hrtimer here? */
  32 #define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)
  33
  34
  35
  36 /**
  37  * Clip @num_rects number of @rects against @clip storing the
  38  * results in @out_rects and the number of passed rects in @out_num.
  39  */
  40 void vmw_clip_cliprects(struct drm_clip_rect *rects,
  41                         int num_rects,
  42                         struct vmw_clip_rect clip,
  43                         SVGASignedRect *out_rects,
  44                         int *out_num)
  45 {
  46         int i, k;
  47
  48         for (i = 0, k = 0; i < num_rects; i++) {
  49                 int x1 = max_t(int, clip.x1, rects[i].x1);
  50                 int y1 = max_t(int, clip.y1, rects[i].y1);
  51                 int x2 = min_t(int, clip.x2, rects[i].x2);
  52                 int y2 = min_t(int, clip.y2, rects[i].y2);
  53
  54                 if (x1 >= x2)
  55                         continue;
  56                 if (y1 >= y2)
  57                         continue;
  58
  59                 out_rects[k].left   = x1;
  60                 out_rects[k].top    = y1;
  61                 out_rects[k].right  = x2;
  62                 out_rects[k].bottom = y2;
  63                 k++;
  64         }
  65
  66         *out_num = k;
  67 }
  68
  69 void vmw_du_cleanup(struct vmw_display_unit *du)
  70 {
  71         if (du->cursor_surface)
  72                 vmw_surface_unreference(&du->cursor_surface);
  73         if (du->cursor_dmabuf)
  74                 vmw_dmabuf_unreference(&du->cursor_dmabuf);
  75         drm_connector_unregister(&du->connector);
  76         drm_crtc_cleanup(&du->crtc);
  77         drm_encoder_cleanup(&du->encoder);
  78         drm_connector_cleanup(&du->connector);
  79 }
  80
  81 /*
  82  * Display Unit Cursor functions
  83  */
  84
  85 int vmw_cursor_update_image(struct vmw_private *dev_priv,
  86                             u32 *image, u32 width, u32 height,
  87                             u32 hotspotX, u32 hotspotY)
  88 {
  89         struct {
  90                 u32 cmd;
  91                 SVGAFifoCmdDefineAlphaCursor cursor;
  92         } *cmd;
  93         u32 image_size = width * height * 4;
  94         u32 cmd_size = sizeof(*cmd) + image_size;
  95
  96         if (!image)
  97                 return -EINVAL;
  98
  99         cmd = vmw_fifo_reserve(dev_priv, cmd_size);
 100         if (unlikely(cmd == NULL)) {
 101                 DRM_ERROR("Fifo reserve failed.\n");
 102                 return -ENOMEM;
 103         }
 104
 105         memset(cmd, 0, sizeof(*cmd));
 106
 107         memcpy(&cmd[1], image, image_size);
 108
 109         cmd->cmd = cpu_to_le32(SVGA_CMD_DEFINE_ALPHA_CURSOR);
 110         cmd->cursor.id = cpu_to_le32(0);
 111         cmd->cursor.width = cpu_to_le32(width);
 112         cmd->cursor.height = cpu_to_le32(height);
 113         cmd->cursor.hotspotX = cpu_to_le32(hotspotX);
 114         cmd->cursor.hotspotY = cpu_to_le32(hotspotY);
 115
 116         vmw_fifo_commit(dev_priv, cmd_size);
 117
 118         return 0;
 119 }
 120
 121 int vmw_cursor_update_dmabuf(struct vmw_private *dev_priv,
 122                              struct vmw_dma_buffer *dmabuf,
 123                              u32 width, u32 height,
 124                              u32 hotspotX, u32 hotspotY)
 125 {
 126         struct ttm_bo_kmap_obj map;
 127         unsigned long kmap_offset;
 128         unsigned long kmap_num;
 129         void *virtual;
 130         bool dummy;
 131         int ret;
 132
 133         kmap_offset = 0;
 134         kmap_num = (width*height*4 + PAGE_SIZE - 1) >> PAGE_SHIFT;
 135
 136         ret = ttm_bo_reserve(&dmabuf->base, true, false, false, NULL);
 137         if (unlikely(ret != 0)) {
 138                 DRM_ERROR("reserve failed\n");
 139                 return -EINVAL;
 140         }
 141
 142         ret = ttm_bo_kmap(&dmabuf->base, kmap_offset, kmap_num, &map);
 143         if (unlikely(ret != 0))
 144                 goto err_unreserve;
 145
 146         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 147         ret = vmw_cursor_update_image(dev_priv, virtual, width, height,
 148                                       hotspotX, hotspotY);
 149
 150         ttm_bo_kunmap(&map);
 151 err_unreserve:
 152         ttm_bo_unreserve(&dmabuf->base);
 153
 154         return ret;
 155 }
 156
 157
 158 void vmw_cursor_update_position(struct vmw_private *dev_priv,
 159                                 bool show, int x, int y)
 160 {
 161         __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
 162         uint32_t count;
 163
 164         iowrite32(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
 165         iowrite32(x, fifo_mem + SVGA_FIFO_CURSOR_X);
 166         iowrite32(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
 167         count = ioread32(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 168         iowrite32(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 169 }
 170
 171 int vmw_du_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file_priv,
 172                            uint32_t handle, uint32_t width, uint32_t height)
 173 {
 174         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 175         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 176         struct vmw_surface *surface = NULL;
 177         struct vmw_dma_buffer *dmabuf = NULL;
 178         int ret;
 179
 180         /*
 181          * FIXME: Unclear whether there's any global state touched by the
 182          * cursor_set function, especially vmw_cursor_update_position looks
 183          * suspicious. For now take the easy route and reacquire all locks. We
 184          * can do this since the caller in the drm core doesn't check anything
 185          * which is protected by any looks.
 186          */
 187         drm_modeset_unlock_crtc(crtc);
 188         drm_modeset_lock_all(dev_priv->dev);
 189
 190         /* A lot of the code assumes this */
 191         if (handle && (width != 64 || height != 64)) {
 192                 ret = -EINVAL;
 193                 goto out;
 194         }
 195
 196         if (handle) {
 197                 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 198
 199                 ret = vmw_user_lookup_handle(dev_priv, tfile,
 200                                              handle, &surface, &dmabuf);
 201                 if (ret) {
 202                         DRM_ERROR("failed to find surface or dmabuf: %i\n", ret);
 203                         ret = -EINVAL;
 204                         goto out;
 205                 }
 206         }
 207
 208         /* need to do this before taking down old image */
 209         if (surface && !surface->snooper.image) {
 210                 DRM_ERROR("surface not suitable for cursor\n");
 211                 vmw_surface_unreference(&surface);
 212                 ret = -EINVAL;
 213                 goto out;
 214         }
 215
 216         /* takedown old cursor */
 217         if (du->cursor_surface) {
 218                 du->cursor_surface->snooper.crtc = NULL;
 219                 vmw_surface_unreference(&du->cursor_surface);
 220         }
 221         if (du->cursor_dmabuf)
 222                 vmw_dmabuf_unreference(&du->cursor_dmabuf);
 223
 224         /* setup new image */
 225         if (surface) {
 226                 /* vmw_user_surface_lookup takes one reference */
 227                 du->cursor_surface = surface;
 228
 229                 du->cursor_surface->snooper.crtc = crtc;
 230                 du->cursor_age = du->cursor_surface->snooper.age;
 231                 vmw_cursor_update_image(dev_priv, surface->snooper.image,
 232                                         64, 64, du->hotspot_x, du->hotspot_y);
 233         } else if (dmabuf) {
 234                 /* vmw_user_surface_lookup takes one reference */
 235                 du->cursor_dmabuf = dmabuf;
 236
 237                 ret = vmw_cursor_update_dmabuf(dev_priv, dmabuf, width, height,
 238                                                du->hotspot_x, du->hotspot_y);
 239         } else {
 240                 vmw_cursor_update_position(dev_priv, false, 0, 0);
 241                 ret = 0;
 242                 goto out;
 243         }
 244
 245         vmw_cursor_update_position(dev_priv, true,
 246                                    du->cursor_x + du->hotspot_x,
 247                                    du->cursor_y + du->hotspot_y);
 248
 249         ret = 0;
 250 out:
 251         drm_modeset_unlock_all(dev_priv->dev);
 252         drm_modeset_lock_crtc(crtc, crtc->cursor);
 253
 254         return ret;
 255 }
 256
 257 int vmw_du_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
 258 {
 259         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 260         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 261         bool shown = du->cursor_surface || du->cursor_dmabuf ? true : false;
 262
 263         du->cursor_x = x + crtc->x;
 264         du->cursor_y = y + crtc->y;
 265
 266         /*
 267          * FIXME: Unclear whether there's any global state touched by the
 268          * cursor_set function, especially vmw_cursor_update_position looks
 269          * suspicious. For now take the easy route and reacquire all locks. We
 270          * can do this since the caller in the drm core doesn't check anything
 271          * which is protected by any looks.
 272          */
 273         drm_modeset_unlock_crtc(crtc);
 274         drm_modeset_lock_all(dev_priv->dev);
 275
 276         vmw_cursor_update_position(dev_priv, shown,
 277                                    du->cursor_x + du->hotspot_x,
 278                                    du->cursor_y + du->hotspot_y);
 279
 280         drm_modeset_unlock_all(dev_priv->dev);
 281         drm_modeset_lock_crtc(crtc, crtc->cursor);
 282
 283         return 0;
 284 }
 285
 286 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
 287                           struct ttm_object_file *tfile,
 288                           struct ttm_buffer_object *bo,
 289                           SVGA3dCmdHeader *header)
 290 {
 291         struct ttm_bo_kmap_obj map;
 292         unsigned long kmap_offset;
 293         unsigned long kmap_num;
 294         SVGA3dCopyBox *box;
 295         unsigned box_count;
 296         void *virtual;
 297         bool dummy;
 298         struct vmw_dma_cmd {
 299                 SVGA3dCmdHeader header;
 300                 SVGA3dCmdSurfaceDMA dma;
 301         } *cmd;
 302         int i, ret;
 303
 304         cmd = container_of(header, struct vmw_dma_cmd, header);
 305
 306         /* No snooper installed */
 307         if (!srf->snooper.image)
 308                 return;
 309
 310         if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
 311                 DRM_ERROR("face and mipmap for cursors should never != 0\n");
 312                 return;
 313         }
 314
 315         if (cmd->header.size < 64) {
 316                 DRM_ERROR("at least one full copy box must be given\n");
 317                 return;
 318         }
 319
 320         box = (SVGA3dCopyBox *)&cmd[1];
 321         box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
 322                         sizeof(SVGA3dCopyBox);
 323
 324         if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
 325             box->x != 0    || box->y != 0    || box->z != 0    ||
 326             box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
 327             box->d != 1    || box_count != 1) {
 328                 /* TODO handle none page aligned offsets */
 329                 /* TODO handle more dst & src != 0 */
 330                 /* TODO handle more then one copy */
 331                 DRM_ERROR("Cant snoop dma request for cursor!\n");
 332                 DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
 333                           box->srcx, box->srcy, box->srcz,
 334                           box->x, box->y, box->z,
 335                           box->w, box->h, box->d, box_count,
 336                           cmd->dma.guest.ptr.offset);
 337                 return;
 338         }
 339
 340         kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
 341         kmap_num = (64*64*4) >> PAGE_SHIFT;
 342
 343         ret = ttm_bo_reserve(bo, true, false, false, NULL);
 344         if (unlikely(ret != 0)) {
 345                 DRM_ERROR("reserve failed\n");
 346                 return;
 347         }
 348
 349         ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
 350         if (unlikely(ret != 0))
 351                 goto err_unreserve;
 352
 353         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 354
 355         if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
 356                 memcpy(srf->snooper.image, virtual, 64*64*4);
 357         } else {
 358                 /* Image is unsigned pointer. */
 359                 for (i = 0; i < box->h; i++)
 360                         memcpy(srf->snooper.image + i * 64,
 361                                virtual + i * cmd->dma.guest.pitch,
 362                                box->w * 4);
 363         }
 364
 365         srf->snooper.age++;
 366
 367         ttm_bo_kunmap(&map);
 368 err_unreserve:
 369         ttm_bo_unreserve(bo);
 370 }
 371
 372 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
 373 {
 374         struct drm_device *dev = dev_priv->dev;
 375         struct vmw_display_unit *du;
 376         struct drm_crtc *crtc;
 377
 378         mutex_lock(&dev->mode_config.mutex);
 379
 380         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 381                 du = vmw_crtc_to_du(crtc);
 382                 if (!du->cursor_surface ||
 383                     du->cursor_age == du->cursor_surface->snooper.age)
 384                         continue;
 385
 386                 du->cursor_age = du->cursor_surface->snooper.age;
 387                 vmw_cursor_update_image(dev_priv,
 388                                         du->cursor_surface->snooper.image,
 389                                         64, 64, du->hotspot_x, du->hotspot_y);
 390         }
 391
 392         mutex_unlock(&dev->mode_config.mutex);
 393 }
 394
 395 /*
 396  * Generic framebuffer code
 397  */
 398
 399 /*
 400  * Surface framebuffer code
 401  */
 402
 403 static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
 404 {
 405         struct vmw_framebuffer_surface *vfbs =
 406                 vmw_framebuffer_to_vfbs(framebuffer);
 407         struct vmw_master *vmaster = vmw_master(vfbs->master);
 408
 409
 410         mutex_lock(&vmaster->fb_surf_mutex);
 411         list_del(&vfbs->head);
 412         mutex_unlock(&vmaster->fb_surf_mutex);
 413
 414         drm_master_put(&vfbs->master);
 415         drm_framebuffer_cleanup(framebuffer);
 416         vmw_surface_unreference(&vfbs->surface);
 417         ttm_base_object_unref(&vfbs->base.user_obj);
 418
 419         kfree(vfbs);
 420 }
 421
 422 static int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
 423                                   struct drm_file *file_priv,
 424                                   unsigned flags, unsigned color,
 425                                   struct drm_clip_rect *clips,
 426                                   unsigned num_clips)
 427 {
 428         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 429         struct vmw_framebuffer_surface *vfbs =
 430                 vmw_framebuffer_to_vfbs(framebuffer);
 431         struct drm_clip_rect norect;
 432         int ret, inc = 1;
 433
 434         if (unlikely(vfbs->master != file_priv->master))
 435                 return -EINVAL;
 436
 437         /* Legacy Display Unit does not support 3D */
 438         if (dev_priv->active_display_unit == vmw_du_legacy)
 439                 return -EINVAL;
 440
 441         drm_modeset_lock_all(dev_priv->dev);
 442
 443         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 444         if (unlikely(ret != 0)) {
 445                 drm_modeset_unlock_all(dev_priv->dev);
 446                 return ret;
 447         }
 448
 449         if (!num_clips) {
 450                 num_clips = 1;
 451                 clips = &norect;
 452                 norect.x1 = norect.y1 = 0;
 453                 norect.x2 = framebuffer->width;
 454                 norect.y2 = framebuffer->height;
 455         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 456                 num_clips /= 2;
 457                 inc = 2; /* skip source rects */
 458         }
 459
 460         if (dev_priv->active_display_unit == vmw_du_screen_object)
 461                 ret = vmw_kms_sou_do_surface_dirty(dev_priv, file_priv,
 462                                                    &vfbs->base,
 463                                                    flags, color,
 464                                                    clips, num_clips,
 465                                                    inc, NULL);
 466
 467         vmw_fifo_flush(dev_priv, false);
 468         ttm_read_unlock(&dev_priv->reservation_sem);
 469
 470         drm_modeset_unlock_all(dev_priv->dev);
 471
 472         return 0;
 473 }
 474
 475 static struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
 476         .destroy = vmw_framebuffer_surface_destroy,
 477         .dirty = vmw_framebuffer_surface_dirty,
 478 };
 479
 480 static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
 481                                            struct drm_file *file_priv,
 482                                            struct vmw_surface *surface,
 483                                            struct vmw_framebuffer **out,
 484                                            const struct drm_mode_fb_cmd
 485                                            *mode_cmd)
 486
 487 {
 488         struct drm_device *dev = dev_priv->dev;
 489         struct vmw_framebuffer_surface *vfbs;
 490         enum SVGA3dSurfaceFormat format;
 491         struct vmw_master *vmaster = vmw_master(file_priv->master);
 492         int ret;
 493
 494         /* 3D is only supported on HWv8 and newer hosts */
 495         if (dev_priv->active_display_unit == vmw_du_legacy)
 496                 return -ENOSYS;
 497
 498         /*
 499          * Sanity checks.
 500          */
 501
 502         /* Surface must be marked as a scanout. */
 503         if (unlikely(!surface->scanout))
 504                 return -EINVAL;
 505
 506         if (unlikely(surface->mip_levels[0] != 1 ||
 507                      surface->num_sizes != 1 ||
 508                      surface->base_size.width < mode_cmd->width ||
 509                      surface->base_size.height < mode_cmd->height ||
 510                      surface->base_size.depth != 1)) {
 511                 DRM_ERROR("Incompatible surface dimensions "
 512                           "for requested mode.\n");
 513                 return -EINVAL;
 514         }
 515
 516         switch (mode_cmd->depth) {
 517         case 32:
 518                 format = SVGA3D_A8R8G8B8;
 519                 break;
 520         case 24:
 521                 format = SVGA3D_X8R8G8B8;
 522                 break;
 523         case 16:
 524                 format = SVGA3D_R5G6B5;
 525                 break;
 526         case 15:
 527                 format = SVGA3D_A1R5G5B5;
 528                 break;
 529         default:
 530                 DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 531                 return -EINVAL;
 532         }
 533
 534         if (unlikely(format != surface->format)) {
 535                 DRM_ERROR("Invalid surface format for requested mode.\n");
 536                 return -EINVAL;
 537         }
 538
 539         vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
 540         if (!vfbs) {
 541                 ret = -ENOMEM;
 542                 goto out_err1;
 543         }
 544
 545         if (!vmw_surface_reference(surface)) {
 546                 DRM_ERROR("failed to reference surface %p\n", surface);
 547                 ret = -EINVAL;
 548                 goto out_err2;
 549         }
 550
 551         /* XXX get the first 3 from the surface info */
 552         vfbs->base.base.bits_per_pixel = mode_cmd->bpp;
 553         vfbs->base.base.pitches[0] = mode_cmd->pitch;
 554         vfbs->base.base.depth = mode_cmd->depth;
 555         vfbs->base.base.width = mode_cmd->width;
 556         vfbs->base.base.height = mode_cmd->height;
 557         vfbs->surface = surface;
 558         vfbs->base.user_handle = mode_cmd->handle;
 559         vfbs->master = drm_master_get(file_priv->master);
 560
 561         mutex_lock(&vmaster->fb_surf_mutex);
 562         list_add_tail(&vfbs->head, &vmaster->fb_surf);
 563         mutex_unlock(&vmaster->fb_surf_mutex);
 564
 565         *out = &vfbs->base;
 566
 567         ret = drm_framebuffer_init(dev, &vfbs->base.base,
 568                                    &vmw_framebuffer_surface_funcs);
 569         if (ret)
 570                 goto out_err3;
 571
 572         return 0;
 573
 574 out_err3:
 575         vmw_surface_unreference(&surface);
 576 out_err2:
 577         kfree(vfbs);
 578 out_err1:
 579         return ret;
 580 }
 581
 582 /*
 583  * Dmabuf framebuffer code
 584  */
 585
 586 static void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
 587 {
 588         struct vmw_framebuffer_dmabuf *vfbd =
 589                 vmw_framebuffer_to_vfbd(framebuffer);
 590
 591         drm_framebuffer_cleanup(framebuffer);
 592         vmw_dmabuf_unreference(&vfbd->buffer);
 593         ttm_base_object_unref(&vfbd->base.user_obj);
 594
 595         kfree(vfbd);
 596 }
 597
 598 static int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
 599                                  struct drm_file *file_priv,
 600                                  unsigned flags, unsigned color,
 601                                  struct drm_clip_rect *clips,
 602                                  unsigned num_clips)
 603 {
 604         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 605         struct vmw_framebuffer_dmabuf *vfbd =
 606                 vmw_framebuffer_to_vfbd(framebuffer);
 607         struct drm_clip_rect norect;
 608         int ret, increment = 1;
 609
 610         drm_modeset_lock_all(dev_priv->dev);
 611
 612         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 613         if (unlikely(ret != 0)) {
 614                 drm_modeset_unlock_all(dev_priv->dev);
 615                 return ret;
 616         }
 617
 618         if (!num_clips) {
 619                 num_clips = 1;
 620                 clips = &norect;
 621                 norect.x1 = norect.y1 = 0;
 622                 norect.x2 = framebuffer->width;
 623                 norect.y2 = framebuffer->height;
 624         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 625                 num_clips /= 2;
 626                 increment = 2;
 627         }
 628
 629         if (dev_priv->ldu_priv) {
 630                 ret = vmw_kms_ldu_do_dmabuf_dirty(dev_priv, &vfbd->base,
 631                                                   flags, color,
 632                                                   clips, num_clips, increment);
 633         } else if (dev_priv->active_display_unit == vmw_du_screen_object) {
 634                 ret = vmw_kms_sou_do_dmabuf_dirty(file_priv, dev_priv,
 635                                                   &vfbd->base,
 636                                                   flags, color,
 637                                                   clips, num_clips, increment,
 638                                                   NULL);
 639         }
 640
 641         vmw_fifo_flush(dev_priv, false);
 642         ttm_read_unlock(&dev_priv->reservation_sem);
 643
 644         drm_modeset_unlock_all(dev_priv->dev);
 645
 646         return ret;
 647 }
 648
 649 static struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
 650         .destroy = vmw_framebuffer_dmabuf_destroy,
 651         .dirty = vmw_framebuffer_dmabuf_dirty,
 652 };
 653
 654 /**
 655  * Pin the dmabuffer to the start of vram.
 656  */
 657 static int vmw_framebuffer_dmabuf_pin(struct vmw_framebuffer *vfb)
 658 {
 659         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 660         struct vmw_framebuffer_dmabuf *vfbd =
 661                 vmw_framebuffer_to_vfbd(&vfb->base);
 662         int ret;
 663
 664         /* This code should only be used with Legacy Display Unit */
 665         BUG_ON(dev_priv->active_display_unit != vmw_du_legacy);
 666
 667         vmw_overlay_pause_all(dev_priv);
 668
 669         ret = vmw_dmabuf_to_start_of_vram(dev_priv, vfbd->buffer, true, false);
 670
 671         vmw_overlay_resume_all(dev_priv);
 672
 673         WARN_ON(ret != 0);
 674
 675         return 0;
 676 }
 677
 678 static int vmw_framebuffer_dmabuf_unpin(struct vmw_framebuffer *vfb)
 679 {
 680         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 681         struct vmw_framebuffer_dmabuf *vfbd =
 682                 vmw_framebuffer_to_vfbd(&vfb->base);
 683
 684         if (!vfbd->buffer) {
 685                 WARN_ON(!vfbd->buffer);
 686                 return 0;
 687         }
 688
 689         return vmw_dmabuf_unpin(dev_priv, vfbd->buffer, false);
 690 }
 691
 692 static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
 693                                           struct vmw_dma_buffer *dmabuf,
 694                                           struct vmw_framebuffer **out,
 695                                           const struct drm_mode_fb_cmd
 696                                           *mode_cmd)
 697
 698 {
 699         struct drm_device *dev = dev_priv->dev;
 700         struct vmw_framebuffer_dmabuf *vfbd;
 701         unsigned int requested_size;
 702         int ret;
 703
 704         requested_size = mode_cmd->height * mode_cmd->pitch;
 705         if (unlikely(requested_size > dmabuf->base.num_pages * PAGE_SIZE)) {
 706                 DRM_ERROR("Screen buffer object size is too small "
 707                           "for requested mode.\n");
 708                 return -EINVAL;
 709         }
 710
 711         /* Limited framebuffer color depth support for screen objects */
 712         if (dev_priv->active_display_unit == vmw_du_screen_object) {
 713                 switch (mode_cmd->depth) {
 714                 case 32:
 715                 case 24:
 716                         /* Only support 32 bpp for 32 and 24 depth fbs */
 717                         if (mode_cmd->bpp == 32)
 718                                 break;
 719
 720                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 721                                   mode_cmd->depth, mode_cmd->bpp);
 722                         return -EINVAL;
 723                 case 16:
 724                 case 15:
 725                         /* Only support 16 bpp for 16 and 15 depth fbs */
 726                         if (mode_cmd->bpp == 16)
 727                                 break;
 728
 729                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 730                                   mode_cmd->depth, mode_cmd->bpp);
 731                         return -EINVAL;
 732                 default:
 733                         DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 734                         return -EINVAL;
 735                 }
 736         }
 737
 738         vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
 739         if (!vfbd) {
 740                 ret = -ENOMEM;
 741                 goto out_err1;
 742         }
 743
 744         if (!vmw_dmabuf_reference(dmabuf)) {
 745                 DRM_ERROR("failed to reference dmabuf %p\n", dmabuf);
 746                 ret = -EINVAL;
 747                 goto out_err2;
 748         }
 749
 750         vfbd->base.base.bits_per_pixel = mode_cmd->bpp;
 751         vfbd->base.base.pitches[0] = mode_cmd->pitch;
 752         vfbd->base.base.depth = mode_cmd->depth;
 753         vfbd->base.base.width = mode_cmd->width;
 754         vfbd->base.base.height = mode_cmd->height;
 755         if (dev_priv->active_display_unit == vmw_du_legacy) {
 756                 vfbd->base.pin = vmw_framebuffer_dmabuf_pin;
 757                 vfbd->base.unpin = vmw_framebuffer_dmabuf_unpin;
 758         }
 759         vfbd->base.dmabuf = true;
 760         vfbd->buffer = dmabuf;
 761         vfbd->base.user_handle = mode_cmd->handle;
 762         *out = &vfbd->base;
 763
 764         ret = drm_framebuffer_init(dev, &vfbd->base.base,
 765                                    &vmw_framebuffer_dmabuf_funcs);
 766         if (ret)
 767                 goto out_err3;
 768
 769         return 0;
 770
 771 out_err3:
 772         vmw_dmabuf_unreference(&dmabuf);
 773 out_err2:
 774         kfree(vfbd);
 775 out_err1:
 776         return ret;
 777 }
 778
 779 /*
 780  * Generic Kernel modesetting functions
 781  */
 782
 783 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
 784                                                  struct drm_file *file_priv,
 785                                                  struct drm_mode_fb_cmd2 *mode_cmd2)
 786 {
 787         struct vmw_private *dev_priv = vmw_priv(dev);
 788         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 789         struct vmw_framebuffer *vfb = NULL;
 790         struct vmw_surface *surface = NULL;
 791         struct vmw_dma_buffer *bo = NULL;
 792         struct ttm_base_object *user_obj;
 793         struct drm_mode_fb_cmd mode_cmd;
 794         int ret;
 795
 796         mode_cmd.width = mode_cmd2->width;
 797         mode_cmd.height = mode_cmd2->height;
 798         mode_cmd.pitch = mode_cmd2->pitches[0];
 799         mode_cmd.handle = mode_cmd2->handles[0];
 800         drm_fb_get_bpp_depth(mode_cmd2->pixel_format, &mode_cmd.depth,
 801                                     &mode_cmd.bpp);
 802
 803         /**
 804          * This code should be conditioned on Screen Objects not being used.
 805          * If screen objects are used, we can allocate a GMR to hold the
 806          * requested framebuffer.
 807          */
 808
 809         if (!vmw_kms_validate_mode_vram(dev_priv,
 810                                         mode_cmd.pitch,
 811                                         mode_cmd.height)) {
 812                 DRM_ERROR("Requested mode exceed bounding box limit.\n");
 813                 return ERR_PTR(-ENOMEM);
 814         }
 815
 816         /*
 817          * Take a reference on the user object of the resource
 818          * backing the kms fb. This ensures that user-space handle
 819          * lookups on that resource will always work as long as
 820          * it's registered with a kms framebuffer. This is important,
 821          * since vmw_execbuf_process identifies resources in the
 822          * command stream using user-space handles.
 823          */
 824
 825         user_obj = ttm_base_object_lookup(tfile, mode_cmd.handle);
 826         if (unlikely(user_obj == NULL)) {
 827                 DRM_ERROR("Could not locate requested kms frame buffer.\n");
 828                 return ERR_PTR(-ENOENT);
 829         }
 830
 831         /**
 832          * End conditioned code.
 833          */
 834
 835         /* returns either a dmabuf or surface */
 836         ret = vmw_user_lookup_handle(dev_priv, tfile,
 837                                      mode_cmd.handle,
 838                                      &surface, &bo);
 839         if (ret)
 840                 goto err_out;
 841
 842         /* Create the new framebuffer depending one what we got back */
 843         if (bo)
 844                 ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, bo, &vfb,
 845                                                      &mode_cmd);
 846         else if (surface)
 847                 ret = vmw_kms_new_framebuffer_surface(dev_priv, file_priv,
 848                                                       surface, &vfb, &mode_cmd);
 849         else
 850                 BUG();
 851
 852 err_out:
 853         /* vmw_user_lookup_handle takes one ref so does new_fb */
 854         if (bo)
 855                 vmw_dmabuf_unreference(&bo);
 856         if (surface)
 857                 vmw_surface_unreference(&surface);
 858
 859         if (ret) {
 860                 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
 861                 ttm_base_object_unref(&user_obj);
 862                 return ERR_PTR(ret);
 863         } else
 864                 vfb->user_obj = user_obj;
 865
 866         return &vfb->base;
 867 }
 868
 869 static const struct drm_mode_config_funcs vmw_kms_funcs = {
 870         .fb_create = vmw_kms_fb_create,
 871 };
 872
 873 int vmw_kms_generic_present(struct vmw_private *dev_priv,
 874                     struct drm_file *file_priv,
 875                     struct vmw_framebuffer *vfb,
 876                     struct vmw_surface *surface,
 877                     uint32_t sid,
 878                     int32_t destX, int32_t destY,
 879                     struct drm_vmw_rect *clips,
 880                     uint32_t num_clips)
 881 {
 882         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
 883         struct drm_clip_rect *tmp;
 884         struct drm_crtc *crtc;
 885         size_t fifo_size;
 886         int i, k, num_units;
 887         int ret = 0; /* silence warning */
 888         int left, right, top, bottom;
 889
 890         struct {
 891                 SVGA3dCmdHeader header;
 892                 SVGA3dCmdBlitSurfaceToScreen body;
 893         } *cmd;
 894         SVGASignedRect *blits;
 895
 896         num_units = 0;
 897         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
 898                 if (crtc->primary->fb != &vfb->base)
 899                         continue;
 900                 units[num_units++] = vmw_crtc_to_du(crtc);
 901         }
 902
 903         BUG_ON(surface == NULL);
 904         BUG_ON(!clips || !num_clips);
 905
 906         tmp = kzalloc(sizeof(*tmp) * num_clips, GFP_KERNEL);
 907         if (unlikely(tmp == NULL)) {
 908                 DRM_ERROR("Temporary cliprect memory alloc failed.\n");
 909                 return -ENOMEM;
 910         }
 911
 912         fifo_size = sizeof(*cmd) + sizeof(SVGASignedRect) * num_clips;
 913         cmd = kmalloc(fifo_size, GFP_KERNEL);
 914         if (unlikely(cmd == NULL)) {
 915                 DRM_ERROR("Failed to allocate temporary fifo memory.\n");
 916                 ret = -ENOMEM;
 917                 goto out_free_tmp;
 918         }
 919
 920         left = clips->x;
 921         right = clips->x + clips->w;
 922         top = clips->y;
 923         bottom = clips->y + clips->h;
 924
 925         for (i = 1; i < num_clips; i++) {
 926                 left = min_t(int, left, (int)clips[i].x);
 927                 right = max_t(int, right, (int)clips[i].x + clips[i].w);
 928                 top = min_t(int, top, (int)clips[i].y);
 929                 bottom = max_t(int, bottom, (int)clips[i].y + clips[i].h);
 930         }
 931
 932         /* only need to do this once */
 933         memset(cmd, 0, fifo_size);
 934         cmd->header.id = cpu_to_le32(SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN);
 935
 936         blits = (SVGASignedRect *)&cmd[1];
 937
 938         cmd->body.srcRect.left = left;
 939         cmd->body.srcRect.right = right;
 940         cmd->body.srcRect.top = top;
 941         cmd->body.srcRect.bottom = bottom;
 942
 943         for (i = 0; i < num_clips; i++) {
 944                 tmp[i].x1 = clips[i].x - left;
 945                 tmp[i].x2 = clips[i].x + clips[i].w - left;
 946                 tmp[i].y1 = clips[i].y - top;
 947                 tmp[i].y2 = clips[i].y + clips[i].h - top;
 948         }
 949
 950         for (k = 0; k < num_units; k++) {
 951                 struct vmw_display_unit *unit = units[k];
 952                 struct vmw_clip_rect clip;
 953                 int num;
 954
 955                 clip.x1 = left + destX - unit->crtc.x;
 956                 clip.y1 = top + destY - unit->crtc.y;
 957                 clip.x2 = right + destX - unit->crtc.x;
 958                 clip.y2 = bottom + destY - unit->crtc.y;
 959
 960                 /* skip any crtcs that misses the clip region */
 961                 if (clip.x1 >= unit->crtc.mode.hdisplay ||
 962                     clip.y1 >= unit->crtc.mode.vdisplay ||
 963                     clip.x2 <= 0 || clip.y2 <= 0)
 964                         continue;
 965
 966                 /*
 967                  * In order for the clip rects to be correctly scaled
 968                  * the src and dest rects needs to be the same size.
 969                  */
 970                 cmd->body.destRect.left = clip.x1;
 971                 cmd->body.destRect.right = clip.x2;
 972                 cmd->body.destRect.top = clip.y1;
 973                 cmd->body.destRect.bottom = clip.y2;
 974
 975                 /* create a clip rect of the crtc in dest coords */
 976                 clip.x2 = unit->crtc.mode.hdisplay - clip.x1;
 977                 clip.y2 = unit->crtc.mode.vdisplay - clip.y1;
 978                 clip.x1 = 0 - clip.x1;
 979                 clip.y1 = 0 - clip.y1;
 980
 981                 /* need to reset sid as it is changed by execbuf */
 982                 cmd->body.srcImage.sid = sid;
 983                 cmd->body.destScreenId = unit->unit;
 984
 985                 /* clip and write blits to cmd stream */
 986                 vmw_clip_cliprects(tmp, num_clips, clip, blits, &num);
 987
 988                 /* if no cliprects hit skip this */
 989                 if (num == 0)
 990                         continue;
 991
 992                 /* recalculate package length */
 993                 fifo_size = sizeof(*cmd) + sizeof(SVGASignedRect) * num;
 994                 cmd->header.size = cpu_to_le32(fifo_size - sizeof(cmd->header));
 995                 ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
 996                                           fifo_size, 0, NULL, NULL);
 997
 998                 if (unlikely(ret != 0))
 999                         break;
1000         }
1001
1002         vmw_fifo_flush(dev_priv, false);
1003
1004         kfree(cmd);
1005 out_free_tmp:
1006         kfree(tmp);
1007
1008         return ret;
1009 }
1010
1011 int vmw_kms_present(struct vmw_private *dev_priv,
1012                     struct drm_file *file_priv,
1013                     struct vmw_framebuffer *vfb,
1014                     struct vmw_surface *surface,
1015                     uint32_t sid,
1016                     int32_t destX, int32_t destY,
1017                     struct drm_vmw_rect *clips,
1018                     uint32_t num_clips)
1019 {
1020         return vmw_kms_generic_present(dev_priv, file_priv, vfb, surface, sid,
1021                                        destX, destY, clips, num_clips);
1022 }
1023
1024 int vmw_kms_readback(struct vmw_private *dev_priv,
1025                      struct drm_file *file_priv,
1026                      struct vmw_framebuffer *vfb,
1027                      struct drm_vmw_fence_rep __user *user_fence_rep,
1028                      struct drm_vmw_rect *clips,
1029                      uint32_t num_clips)
1030 {
1031         struct vmw_framebuffer_dmabuf *vfbd =
1032                 vmw_framebuffer_to_vfbd(&vfb->base);
1033         struct vmw_dma_buffer *dmabuf = vfbd->buffer;
1034         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
1035         struct drm_crtc *crtc;
1036         size_t fifo_size;
1037         int i, k, ret, num_units, blits_pos;
1038
1039         struct {
1040                 uint32_t header;
1041                 SVGAFifoCmdDefineGMRFB body;
1042         } *cmd;
1043         struct {
1044                 uint32_t header;
1045                 SVGAFifoCmdBlitScreenToGMRFB body;
1046         } *blits;
1047
1048         num_units = 0;
1049         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
1050                 if (crtc->primary->fb != &vfb->base)
1051                         continue;
1052                 units[num_units++] = vmw_crtc_to_du(crtc);
1053         }
1054
1055         BUG_ON(dmabuf == NULL);
1056         BUG_ON(!clips || !num_clips);
1057
1058         /* take a safe guess at fifo size */
1059         fifo_size = sizeof(*cmd) + sizeof(*blits) * num_clips * num_units;
1060         cmd = kmalloc(fifo_size, GFP_KERNEL);
1061         if (unlikely(cmd == NULL)) {
1062                 DRM_ERROR("Failed to allocate temporary fifo memory.\n");
1063                 return -ENOMEM;
1064         }
1065
1066         memset(cmd, 0, fifo_size);
1067         cmd->header = SVGA_CMD_DEFINE_GMRFB;
1068         cmd->body.format.bitsPerPixel = vfb->base.bits_per_pixel;
1069         cmd->body.format.colorDepth = vfb->base.depth;
1070         cmd->body.format.reserved = 0;
1071         cmd->body.bytesPerLine = vfb->base.pitches[0];
1072         cmd->body.ptr.gmrId = vfb->user_handle;
1073         cmd->body.ptr.offset = 0;
1074
1075         blits = (void *)&cmd[1];
1076         blits_pos = 0;
1077         for (i = 0; i < num_units; i++) {
1078                 struct drm_vmw_rect *c = clips;
1079                 for (k = 0; k < num_clips; k++, c++) {
1080                         /* transform clip coords to crtc origin based coords */
1081                         int clip_x1 = c->x - units[i]->crtc.x;
1082                         int clip_x2 = c->x - units[i]->crtc.x + c->w;
1083                         int clip_y1 = c->y - units[i]->crtc.y;
1084                         int clip_y2 = c->y - units[i]->crtc.y + c->h;
1085                         int dest_x = c->x;
1086                         int dest_y = c->y;
1087
1088                         /* compensate for clipping, we negate
1089                          * a negative number and add that.
1090                          */
1091                         if (clip_x1 < 0)
1092                                 dest_x += -clip_x1;
1093                         if (clip_y1 < 0)
1094                                 dest_y += -clip_y1;
1095
1096                         /* clip */
1097                         clip_x1 = max(clip_x1, 0);
1098                         clip_y1 = max(clip_y1, 0);
1099                         clip_x2 = min(clip_x2, units[i]->crtc.mode.hdisplay);
1100                         clip_y2 = min(clip_y2, units[i]->crtc.mode.vdisplay);
1101
1102                         /* and cull any rects that misses the crtc */
1103                         if (clip_x1 >= units[i]->crtc.mode.hdisplay ||
1104                             clip_y1 >= units[i]->crtc.mode.vdisplay ||
1105                             clip_x2 <= 0 || clip_y2 <= 0)
1106                                 continue;
1107
1108                         blits[blits_pos].header = SVGA_CMD_BLIT_SCREEN_TO_GMRFB;
1109                         blits[blits_pos].body.srcScreenId = units[i]->unit;
1110                         blits[blits_pos].body.destOrigin.x = dest_x;
1111                         blits[blits_pos].body.destOrigin.y = dest_y;
1112
1113                         blits[blits_pos].body.srcRect.left = clip_x1;
1114                         blits[blits_pos].body.srcRect.top = clip_y1;
1115                         blits[blits_pos].body.srcRect.right = clip_x2;
1116                         blits[blits_pos].body.srcRect.bottom = clip_y2;
1117                         blits_pos++;
1118                 }
1119         }
1120         /* reset size here and use calculated exact size from loops */
1121         fifo_size = sizeof(*cmd) + sizeof(*blits) * blits_pos;
1122
1123         ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd, fifo_size,
1124                                   0, user_fence_rep, NULL);
1125
1126         kfree(cmd);
1127
1128         return ret;
1129 }
1130
1131 int vmw_kms_init(struct vmw_private *dev_priv)
1132 {
1133         struct drm_device *dev = dev_priv->dev;
1134         int ret;
1135
1136         drm_mode_config_init(dev);
1137         dev->mode_config.funcs = &vmw_kms_funcs;
1138         dev->mode_config.min_width = 1;
1139         dev->mode_config.min_height = 1;
1140         /* assumed largest fb size */
1141         dev->mode_config.max_width = 8192;
1142         dev->mode_config.max_height = 8192;
1143
1144         ret = vmw_kms_sou_init_display(dev_priv);
1145         if (ret) /* Fallback */
1146                 ret = vmw_kms_ldu_init_display(dev_priv);
1147
1148         return ret;
1149 }
1150
1151 int vmw_kms_close(struct vmw_private *dev_priv)
1152 {
1153         int ret;
1154
1155         /*
1156          * Docs says we should take the lock before calling this function
1157          * but since it destroys encoders and our destructor calls
1158          * drm_encoder_cleanup which takes the lock we deadlock.
1159          */
1160         drm_mode_config_cleanup(dev_priv->dev);
1161         if (dev_priv->active_display_unit == vmw_du_screen_object)
1162                 ret = vmw_kms_sou_close_display(dev_priv);
1163         else
1164                 ret = vmw_kms_ldu_close_display(dev_priv);
1165
1166         return ret;
1167 }
1168
1169 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1170                                 struct drm_file *file_priv)
1171 {
1172         struct drm_vmw_cursor_bypass_arg *arg = data;
1173         struct vmw_display_unit *du;
1174         struct drm_crtc *crtc;
1175         int ret = 0;
1176
1177
1178         mutex_lock(&dev->mode_config.mutex);
1179         if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1180
1181                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1182                         du = vmw_crtc_to_du(crtc);
1183                         du->hotspot_x = arg->xhot;
1184                         du->hotspot_y = arg->yhot;
1185                 }
1186
1187                 mutex_unlock(&dev->mode_config.mutex);
1188                 return 0;
1189         }
1190
1191         crtc = drm_crtc_find(dev, arg->crtc_id);
1192         if (!crtc) {
1193                 ret = -ENOENT;
1194                 goto out;
1195         }
1196
1197         du = vmw_crtc_to_du(crtc);
1198
1199         du->hotspot_x = arg->xhot;
1200         du->hotspot_y = arg->yhot;
1201
1202 out:
1203         mutex_unlock(&dev->mode_config.mutex);
1204
1205         return ret;
1206 }
1207
1208 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1209                         unsigned width, unsigned height, unsigned pitch,
1210                         unsigned bpp, unsigned depth)
1211 {
1212         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1213                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1214         else if (vmw_fifo_have_pitchlock(vmw_priv))
1215                 iowrite32(pitch, vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1216         vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1217         vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1218         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1219
1220         if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1221                 DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1222                           depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1223                 return -EINVAL;
1224         }
1225
1226         return 0;
1227 }
1228
1229 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1230 {
1231         struct vmw_vga_topology_state *save;
1232         uint32_t i;
1233
1234         vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1235         vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1236         vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1237         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1238                 vmw_priv->vga_pitchlock =
1239                   vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1240         else if (vmw_fifo_have_pitchlock(vmw_priv))
1241                 vmw_priv->vga_pitchlock = ioread32(vmw_priv->mmio_virt +
1242                                                    SVGA_FIFO_PITCHLOCK);
1243
1244         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1245                 return 0;
1246
1247         vmw_priv->num_displays = vmw_read(vmw_priv,
1248                                           SVGA_REG_NUM_GUEST_DISPLAYS);
1249
1250         if (vmw_priv->num_displays == 0)
1251                 vmw_priv->num_displays = 1;
1252
1253         for (i = 0; i < vmw_priv->num_displays; ++i) {
1254                 save = &vmw_priv->vga_save[i];
1255                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1256                 save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1257                 save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1258                 save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1259                 save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1260                 save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1261                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1262                 if (i == 0 && vmw_priv->num_displays == 1 &&
1263                     save->width == 0 && save->height == 0) {
1264
1265                         /*
1266                          * It should be fairly safe to assume that these
1267                          * values are uninitialized.
1268                          */
1269
1270                         save->width = vmw_priv->vga_width - save->pos_x;
1271                         save->height = vmw_priv->vga_height - save->pos_y;
1272                 }
1273         }
1274
1275         return 0;
1276 }
1277
1278 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1279 {
1280         struct vmw_vga_topology_state *save;
1281         uint32_t i;
1282
1283         vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1284         vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1285         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1286         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1287                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1288                           vmw_priv->vga_pitchlock);
1289         else if (vmw_fifo_have_pitchlock(vmw_priv))
1290                 iowrite32(vmw_priv->vga_pitchlock,
1291                           vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1292
1293         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1294                 return 0;
1295
1296         for (i = 0; i < vmw_priv->num_displays; ++i) {
1297                 save = &vmw_priv->vga_save[i];
1298                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1299                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1300                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1301                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1302                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1303                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1304                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1305         }
1306
1307         return 0;
1308 }
1309
1310 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1311                                 uint32_t pitch,
1312                                 uint32_t height)
1313 {
1314         return ((u64) pitch * (u64) height) < (u64) dev_priv->prim_bb_mem;
1315 }
1316
1317
1318 /**
1319  * Function called by DRM code called with vbl_lock held.
1320  */
1321 u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc)
1322 {
1323         return 0;
1324 }
1325
1326 /**
1327  * Function called by DRM code called with vbl_lock held.
1328  */
1329 int vmw_enable_vblank(struct drm_device *dev, int crtc)
1330 {
1331         return -ENOSYS;
1332 }
1333
1334 /**
1335  * Function called by DRM code called with vbl_lock held.
1336  */
1337 void vmw_disable_vblank(struct drm_device *dev, int crtc)
1338 {
1339 }
1340
1341
1342 /*
1343  * Small shared kms functions.
1344  */
1345
1346 static int vmw_du_update_layout(struct vmw_private *dev_priv, unsigned num,
1347                          struct drm_vmw_rect *rects)
1348 {
1349         struct drm_device *dev = dev_priv->dev;
1350         struct vmw_display_unit *du;
1351         struct drm_connector *con;
1352
1353         mutex_lock(&dev->mode_config.mutex);
1354
1355 #if 0
1356         {
1357                 unsigned int i;
1358
1359                 DRM_INFO("%s: new layout ", __func__);
1360                 for (i = 0; i < num; i++)
1361                         DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
1362                                  rects[i].w, rects[i].h);
1363                 DRM_INFO("\n");
1364         }
1365 #endif
1366
1367         list_for_each_entry(con, &dev->mode_config.connector_list, head) {
1368                 du = vmw_connector_to_du(con);
1369                 if (num > du->unit) {
1370                         du->pref_width = rects[du->unit].w;
1371                         du->pref_height = rects[du->unit].h;
1372                         du->pref_active = true;
1373                         du->gui_x = rects[du->unit].x;
1374                         du->gui_y = rects[du->unit].y;
1375                 } else {
1376                         du->pref_width = 800;
1377                         du->pref_height = 600;
1378                         du->pref_active = false;
1379                 }
1380                 con->status = vmw_du_connector_detect(con, true);
1381         }
1382
1383         mutex_unlock(&dev->mode_config.mutex);
1384
1385         return 0;
1386 }
1387
1388 void vmw_du_crtc_save(struct drm_crtc *crtc)
1389 {
1390 }
1391
1392 void vmw_du_crtc_restore(struct drm_crtc *crtc)
1393 {
1394 }
1395
1396 void vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
1397                            u16 *r, u16 *g, u16 *b,
1398                            uint32_t start, uint32_t size)
1399 {
1400         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
1401         int i;
1402
1403         for (i = 0; i < size; i++) {
1404                 DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
1405                           r[i], g[i], b[i]);
1406                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
1407                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
1408                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
1409         }
1410 }
1411
1412 void vmw_du_connector_dpms(struct drm_connector *connector, int mode)
1413 {
1414 }
1415
1416 void vmw_du_connector_save(struct drm_connector *connector)
1417 {
1418 }
1419
1420 void vmw_du_connector_restore(struct drm_connector *connector)
1421 {
1422 }
1423
1424 enum drm_connector_status
1425 vmw_du_connector_detect(struct drm_connector *connector, bool force)
1426 {
1427         uint32_t num_displays;
1428         struct drm_device *dev = connector->dev;
1429         struct vmw_private *dev_priv = vmw_priv(dev);
1430         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1431
1432         num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
1433
1434         return ((vmw_connector_to_du(connector)->unit < num_displays &&
1435                  du->pref_active) ?
1436                 connector_status_connected : connector_status_disconnected);
1437 }
1438
1439 static struct drm_display_mode vmw_kms_connector_builtin[] = {
1440         /* 640x480@60Hz */
1441         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
1442                    752, 800, 0, 480, 489, 492, 525, 0,
1443                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1444         /* 800x600@60Hz */
1445         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
1446                    968, 1056, 0, 600, 601, 605, 628, 0,
1447                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1448         /* 1024x768@60Hz */
1449         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1450                    1184, 1344, 0, 768, 771, 777, 806, 0,
1451                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1452         /* 1152x864@75Hz */
1453         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1454                    1344, 1600, 0, 864, 865, 868, 900, 0,
1455                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1456         /* 1280x768@60Hz */
1457         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
1458                    1472, 1664, 0, 768, 771, 778, 798, 0,
1459                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1460         /* 1280x800@60Hz */
1461         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
1462                    1480, 1680, 0, 800, 803, 809, 831, 0,
1463                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
1464         /* 1280x960@60Hz */
1465         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
1466                    1488, 1800, 0, 960, 961, 964, 1000, 0,
1467                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1468         /* 1280x1024@60Hz */
1469         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
1470                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
1471                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1472         /* 1360x768@60Hz */
1473         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
1474                    1536, 1792, 0, 768, 771, 777, 795, 0,
1475                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1476         /* 1440x1050@60Hz */
1477         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
1478                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
1479                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1480         /* 1440x900@60Hz */
1481         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
1482                    1672, 1904, 0, 900, 903, 909, 934, 0,
1483                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1484         /* 1600x1200@60Hz */
1485         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
1486                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
1487                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1488         /* 1680x1050@60Hz */
1489         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
1490                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
1491                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1492         /* 1792x1344@60Hz */
1493         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
1494                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
1495                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1496         /* 1853x1392@60Hz */
1497         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
1498                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
1499                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1500         /* 1920x1200@60Hz */
1501         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
1502                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
1503                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1504         /* 1920x1440@60Hz */
1505         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
1506                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
1507                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1508         /* 2560x1600@60Hz */
1509         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
1510                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
1511                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1512         /* Terminate */
1513         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
1514 };
1515
1516 /**
1517  * vmw_guess_mode_timing - Provide fake timings for a
1518  * 60Hz vrefresh mode.
1519  *
1520  * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
1521  * members filled in.
1522  */
1523 static void vmw_guess_mode_timing(struct drm_display_mode *mode)
1524 {
1525         mode->hsync_start = mode->hdisplay + 50;
1526         mode->hsync_end = mode->hsync_start + 50;
1527         mode->htotal = mode->hsync_end + 50;
1528
1529         mode->vsync_start = mode->vdisplay + 50;
1530         mode->vsync_end = mode->vsync_start + 50;
1531         mode->vtotal = mode->vsync_end + 50;
1532
1533         mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
1534         mode->vrefresh = drm_mode_vrefresh(mode);
1535 }
1536
1537
1538 int vmw_du_connector_fill_modes(struct drm_connector *connector,
1539                                 uint32_t max_width, uint32_t max_height)
1540 {
1541         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1542         struct drm_device *dev = connector->dev;
1543         struct vmw_private *dev_priv = vmw_priv(dev);
1544         struct drm_display_mode *mode = NULL;
1545         struct drm_display_mode *bmode;
1546         struct drm_display_mode prefmode = { DRM_MODE("preferred",
1547                 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
1548                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1549                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
1550         };
1551         int i;
1552         u32 assumed_bpp = 2;
1553
1554         /*
1555          * If using screen objects, then assume 32-bpp because that's what the
1556          * SVGA device is assuming
1557          */
1558         if (dev_priv->active_display_unit == vmw_du_screen_object)
1559                 assumed_bpp = 4;
1560
1561         /* Add preferred mode */
1562         mode = drm_mode_duplicate(dev, &prefmode);
1563         if (!mode)
1564                 return 0;
1565         mode->hdisplay = du->pref_width;
1566         mode->vdisplay = du->pref_height;
1567         vmw_guess_mode_timing(mode);
1568
1569         if (vmw_kms_validate_mode_vram(dev_priv,
1570                                         mode->hdisplay * assumed_bpp,
1571                                         mode->vdisplay)) {
1572                 drm_mode_probed_add(connector, mode);
1573         } else {
1574                 drm_mode_destroy(dev, mode);
1575                 mode = NULL;
1576         }
1577
1578         if (du->pref_mode) {
1579                 list_del_init(&du->pref_mode->head);
1580                 drm_mode_destroy(dev, du->pref_mode);
1581         }
1582
1583         /* mode might be null here, this is intended */
1584         du->pref_mode = mode;
1585
1586         for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
1587                 bmode = &vmw_kms_connector_builtin[i];
1588                 if (bmode->hdisplay > max_width ||
1589                     bmode->vdisplay > max_height)
1590                         continue;
1591
1592                 if (!vmw_kms_validate_mode_vram(dev_priv,
1593                                                 bmode->hdisplay * assumed_bpp,
1594                                                 bmode->vdisplay))
1595                         continue;
1596
1597                 mode = drm_mode_duplicate(dev, bmode);
1598                 if (!mode)
1599                         return 0;
1600                 mode->vrefresh = drm_mode_vrefresh(mode);
1601
1602                 drm_mode_probed_add(connector, mode);
1603         }
1604
1605         /* Move the prefered mode first, help apps pick the right mode. */
1606         if (du->pref_mode)
1607                 list_move(&du->pref_mode->head, &connector->probed_modes);
1608
1609         drm_mode_connector_list_update(connector, true);
1610
1611         return 1;
1612 }
1613
1614 int vmw_du_connector_set_property(struct drm_connector *connector,
1615                                   struct drm_property *property,
1616                                   uint64_t val)
1617 {
1618         return 0;
1619 }
1620
1621
1622 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
1623                                 struct drm_file *file_priv)
1624 {
1625         struct vmw_private *dev_priv = vmw_priv(dev);
1626         struct drm_vmw_update_layout_arg *arg =
1627                 (struct drm_vmw_update_layout_arg *)data;
1628         void __user *user_rects;
1629         struct drm_vmw_rect *rects;
1630         unsigned rects_size;
1631         int ret;
1632         int i;
1633         struct drm_mode_config *mode_config = &dev->mode_config;
1634         struct drm_vmw_rect bounding_box = {0};
1635
1636         if (!arg->num_outputs) {
1637                 struct drm_vmw_rect def_rect = {0, 0, 800, 600};
1638                 vmw_du_update_layout(dev_priv, 1, &def_rect);
1639                 return 0;
1640         }
1641
1642         rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
1643         rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
1644                         GFP_KERNEL);
1645         if (unlikely(!rects))
1646                 return -ENOMEM;
1647
1648         user_rects = (void __user *)(unsigned long)arg->rects;
1649         ret = copy_from_user(rects, user_rects, rects_size);
1650         if (unlikely(ret != 0)) {
1651                 DRM_ERROR("Failed to get rects.\n");
1652                 ret = -EFAULT;
1653                 goto out_free;
1654         }
1655
1656         for (i = 0; i < arg->num_outputs; ++i) {
1657                 if (rects[i].x < 0 ||
1658                     rects[i].y < 0 ||
1659                     rects[i].x + rects[i].w > mode_config->max_width ||
1660                     rects[i].y + rects[i].h > mode_config->max_height) {
1661                         DRM_ERROR("Invalid GUI layout.\n");
1662                         ret = -EINVAL;
1663                         goto out_free;
1664                 }
1665
1666                 /*
1667                  * bounding_box.w and bunding_box.h are used as
1668                  * lower-right coordinates
1669                  */
1670                 if (rects[i].x + rects[i].w > bounding_box.w)
1671                         bounding_box.w = rects[i].x + rects[i].w;
1672
1673                 if (rects[i].y + rects[i].h > bounding_box.h)
1674                         bounding_box.h = rects[i].y + rects[i].h;
1675         }
1676
1677         vmw_du_update_layout(dev_priv, arg->num_outputs, rects);
1678
1679 out_free:
1680         kfree(rects);
1681         return ret;
1682 }