Pileus Git - ~andy/linux/blob - drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009 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_display_unit_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_crtc_cleanup(&du->crtc);
  41         drm_encoder_cleanup(&du->encoder);
  42         drm_connector_cleanup(&du->connector);
  43 }
  44
  45 /*
  46  * Display Unit Cursor functions
  47  */
  48
  49 int vmw_cursor_update_image(struct vmw_private *dev_priv,
  50                             u32 *image, u32 width, u32 height,
  51                             u32 hotspotX, u32 hotspotY)
  52 {
  53         struct {
  54                 u32 cmd;
  55                 SVGAFifoCmdDefineAlphaCursor cursor;
  56         } *cmd;
  57         u32 image_size = width * height * 4;
  58         u32 cmd_size = sizeof(*cmd) + image_size;
  59
  60         if (!image)
  61                 return -EINVAL;
  62
  63         cmd = vmw_fifo_reserve(dev_priv, cmd_size);
  64         if (unlikely(cmd == NULL)) {
  65                 DRM_ERROR("Fifo reserve failed.\n");
  66                 return -ENOMEM;
  67         }
  68
  69         memset(cmd, 0, sizeof(*cmd));
  70
  71         memcpy(&cmd[1], image, image_size);
  72
  73         cmd->cmd = cpu_to_le32(SVGA_CMD_DEFINE_ALPHA_CURSOR);
  74         cmd->cursor.id = cpu_to_le32(0);
  75         cmd->cursor.width = cpu_to_le32(width);
  76         cmd->cursor.height = cpu_to_le32(height);
  77         cmd->cursor.hotspotX = cpu_to_le32(hotspotX);
  78         cmd->cursor.hotspotY = cpu_to_le32(hotspotY);
  79
  80         vmw_fifo_commit(dev_priv, cmd_size);
  81
  82         return 0;
  83 }
  84
  85 void vmw_cursor_update_position(struct vmw_private *dev_priv,
  86                                 bool show, int x, int y)
  87 {
  88         __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
  89         uint32_t count;
  90
  91         iowrite32(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
  92         iowrite32(x, fifo_mem + SVGA_FIFO_CURSOR_X);
  93         iowrite32(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
  94         count = ioread32(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
  95         iowrite32(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
  96 }
  97
  98 int vmw_du_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file_priv,
  99                            uint32_t handle, uint32_t width, uint32_t height)
 100 {
 101         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 102         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 103         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 104         struct vmw_surface *surface = NULL;
 105         struct vmw_dma_buffer *dmabuf = NULL;
 106         int ret;
 107
 108         /* A lot of the code assumes this */
 109         if (handle && (width != 64 || height != 64))
 110                 return -EINVAL;
 111
 112         if (handle) {
 113                 ret = vmw_user_surface_lookup_handle(dev_priv, tfile,
 114                                                      handle, &surface);
 115                 if (!ret) {
 116                         if (!surface->snooper.image) {
 117                                 DRM_ERROR("surface not suitable for cursor\n");
 118                                 vmw_surface_unreference(&surface);
 119                                 return -EINVAL;
 120                         }
 121                 } else {
 122                         ret = vmw_user_dmabuf_lookup(tfile,
 123                                                      handle, &dmabuf);
 124                         if (ret) {
 125                                 DRM_ERROR("failed to find surface or dmabuf: %i\n", ret);
 126                                 return -EINVAL;
 127                         }
 128                 }
 129         }
 130
 131         /* takedown old cursor */
 132         if (du->cursor_surface) {
 133                 du->cursor_surface->snooper.crtc = NULL;
 134                 vmw_surface_unreference(&du->cursor_surface);
 135         }
 136         if (du->cursor_dmabuf)
 137                 vmw_dmabuf_unreference(&du->cursor_dmabuf);
 138
 139         /* setup new image */
 140         if (surface) {
 141                 /* vmw_user_surface_lookup takes one reference */
 142                 du->cursor_surface = surface;
 143
 144                 du->cursor_surface->snooper.crtc = crtc;
 145                 du->cursor_age = du->cursor_surface->snooper.age;
 146                 vmw_cursor_update_image(dev_priv, surface->snooper.image,
 147                                         64, 64, du->hotspot_x, du->hotspot_y);
 148         } else if (dmabuf) {
 149                 struct ttm_bo_kmap_obj map;
 150                 unsigned long kmap_offset;
 151                 unsigned long kmap_num;
 152                 void *virtual;
 153                 bool dummy;
 154
 155                 /* vmw_user_surface_lookup takes one reference */
 156                 du->cursor_dmabuf = dmabuf;
 157
 158                 kmap_offset = 0;
 159                 kmap_num = (64*64*4) >> PAGE_SHIFT;
 160
 161                 ret = ttm_bo_reserve(&dmabuf->base, true, false, false, 0);
 162                 if (unlikely(ret != 0)) {
 163                         DRM_ERROR("reserve failed\n");
 164                         return -EINVAL;
 165                 }
 166
 167                 ret = ttm_bo_kmap(&dmabuf->base, kmap_offset, kmap_num, &map);
 168                 if (unlikely(ret != 0))
 169                         goto err_unreserve;
 170
 171                 virtual = ttm_kmap_obj_virtual(&map, &dummy);
 172                 vmw_cursor_update_image(dev_priv, virtual, 64, 64,
 173                                         du->hotspot_x, du->hotspot_y);
 174
 175                 ttm_bo_kunmap(&map);
 176 err_unreserve:
 177                 ttm_bo_unreserve(&dmabuf->base);
 178
 179         } else {
 180                 vmw_cursor_update_position(dev_priv, false, 0, 0);
 181                 return 0;
 182         }
 183
 184         vmw_cursor_update_position(dev_priv, true,
 185                                    du->cursor_x + du->hotspot_x,
 186                                    du->cursor_y + du->hotspot_y);
 187
 188         return 0;
 189 }
 190
 191 int vmw_du_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
 192 {
 193         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 194         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 195         bool shown = du->cursor_surface || du->cursor_dmabuf ? true : false;
 196
 197         du->cursor_x = x + crtc->x;
 198         du->cursor_y = y + crtc->y;
 199
 200         vmw_cursor_update_position(dev_priv, shown,
 201                                    du->cursor_x + du->hotspot_x,
 202                                    du->cursor_y + du->hotspot_y);
 203
 204         return 0;
 205 }
 206
 207 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
 208                           struct ttm_object_file *tfile,
 209                           struct ttm_buffer_object *bo,
 210                           SVGA3dCmdHeader *header)
 211 {
 212         struct ttm_bo_kmap_obj map;
 213         unsigned long kmap_offset;
 214         unsigned long kmap_num;
 215         SVGA3dCopyBox *box;
 216         unsigned box_count;
 217         void *virtual;
 218         bool dummy;
 219         struct vmw_dma_cmd {
 220                 SVGA3dCmdHeader header;
 221                 SVGA3dCmdSurfaceDMA dma;
 222         } *cmd;
 223         int i, ret;
 224
 225         cmd = container_of(header, struct vmw_dma_cmd, header);
 226
 227         /* No snooper installed */
 228         if (!srf->snooper.image)
 229                 return;
 230
 231         if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
 232                 DRM_ERROR("face and mipmap for cursors should never != 0\n");
 233                 return;
 234         }
 235
 236         if (cmd->header.size < 64) {
 237                 DRM_ERROR("at least one full copy box must be given\n");
 238                 return;
 239         }
 240
 241         box = (SVGA3dCopyBox *)&cmd[1];
 242         box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
 243                         sizeof(SVGA3dCopyBox);
 244
 245         if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
 246             box->x != 0    || box->y != 0    || box->z != 0    ||
 247             box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
 248             box->d != 1    || box_count != 1) {
 249                 /* TODO handle none page aligned offsets */
 250                 /* TODO handle more dst & src != 0 */
 251                 /* TODO handle more then one copy */
 252                 DRM_ERROR("Cant snoop dma request for cursor!\n");
 253                 DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
 254                           box->srcx, box->srcy, box->srcz,
 255                           box->x, box->y, box->z,
 256                           box->w, box->h, box->d, box_count,
 257                           cmd->dma.guest.ptr.offset);
 258                 return;
 259         }
 260
 261         kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
 262         kmap_num = (64*64*4) >> PAGE_SHIFT;
 263
 264         ret = ttm_bo_reserve(bo, true, false, false, 0);
 265         if (unlikely(ret != 0)) {
 266                 DRM_ERROR("reserve failed\n");
 267                 return;
 268         }
 269
 270         ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
 271         if (unlikely(ret != 0))
 272                 goto err_unreserve;
 273
 274         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 275
 276         if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
 277                 memcpy(srf->snooper.image, virtual, 64*64*4);
 278         } else {
 279                 /* Image is unsigned pointer. */
 280                 for (i = 0; i < box->h; i++)
 281                         memcpy(srf->snooper.image + i * 64,
 282                                virtual + i * cmd->dma.guest.pitch,
 283                                box->w * 4);
 284         }
 285
 286         srf->snooper.age++;
 287
 288         /* we can't call this function from this function since execbuf has
 289          * reserved fifo space.
 290          *
 291          * if (srf->snooper.crtc)
 292          *      vmw_ldu_crtc_cursor_update_image(dev_priv,
 293          *                                       srf->snooper.image, 64, 64,
 294          *                                       du->hotspot_x, du->hotspot_y);
 295          */
 296
 297         ttm_bo_kunmap(&map);
 298 err_unreserve:
 299         ttm_bo_unreserve(bo);
 300 }
 301
 302 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
 303 {
 304         struct drm_device *dev = dev_priv->dev;
 305         struct vmw_display_unit *du;
 306         struct drm_crtc *crtc;
 307
 308         mutex_lock(&dev->mode_config.mutex);
 309
 310         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 311                 du = vmw_crtc_to_du(crtc);
 312                 if (!du->cursor_surface ||
 313                     du->cursor_age == du->cursor_surface->snooper.age)
 314                         continue;
 315
 316                 du->cursor_age = du->cursor_surface->snooper.age;
 317                 vmw_cursor_update_image(dev_priv,
 318                                         du->cursor_surface->snooper.image,
 319                                         64, 64, du->hotspot_x, du->hotspot_y);
 320         }
 321
 322         mutex_unlock(&dev->mode_config.mutex);
 323 }
 324
 325 /*
 326  * Generic framebuffer code
 327  */
 328
 329 int vmw_framebuffer_create_handle(struct drm_framebuffer *fb,
 330                                   struct drm_file *file_priv,
 331                                   unsigned int *handle)
 332 {
 333         if (handle)
 334                 handle = 0;
 335
 336         return 0;
 337 }
 338
 339 /*
 340  * Surface framebuffer code
 341  */
 342
 343 #define vmw_framebuffer_to_vfbs(x) \
 344         container_of(x, struct vmw_framebuffer_surface, base.base)
 345
 346 struct vmw_framebuffer_surface {
 347         struct vmw_framebuffer base;
 348         struct vmw_surface *surface;
 349         struct vmw_dma_buffer *buffer;
 350         struct list_head head;
 351         struct drm_master *master;
 352 };
 353
 354 void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
 355 {
 356         struct vmw_framebuffer_surface *vfbs =
 357                 vmw_framebuffer_to_vfbs(framebuffer);
 358         struct vmw_master *vmaster = vmw_master(vfbs->master);
 359
 360
 361         mutex_lock(&vmaster->fb_surf_mutex);
 362         list_del(&vfbs->head);
 363         mutex_unlock(&vmaster->fb_surf_mutex);
 364
 365         drm_master_put(&vfbs->master);
 366         drm_framebuffer_cleanup(framebuffer);
 367         vmw_surface_unreference(&vfbs->surface);
 368         ttm_base_object_unref(&vfbs->base.user_obj);
 369
 370         kfree(vfbs);
 371 }
 372
 373 static int do_surface_dirty_sou(struct vmw_private *dev_priv,
 374                                 struct drm_file *file_priv,
 375                                 struct vmw_framebuffer *framebuffer,
 376                                 unsigned flags, unsigned color,
 377                                 struct drm_clip_rect *clips,
 378                                 unsigned num_clips, int inc)
 379 {
 380         struct drm_clip_rect *clips_ptr;
 381         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
 382         struct drm_crtc *crtc;
 383         size_t fifo_size;
 384         int i, num_units;
 385         int ret = 0; /* silence warning */
 386         int left, right, top, bottom;
 387
 388         struct {
 389                 SVGA3dCmdHeader header;
 390                 SVGA3dCmdBlitSurfaceToScreen body;
 391         } *cmd;
 392         SVGASignedRect *blits;
 393
 394
 395         num_units = 0;
 396         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list,
 397                             head) {
 398                 if (crtc->fb != &framebuffer->base)
 399                         continue;
 400                 units[num_units++] = vmw_crtc_to_du(crtc);
 401         }
 402
 403         BUG_ON(!clips || !num_clips);
 404
 405         fifo_size = sizeof(*cmd) + sizeof(SVGASignedRect) * num_clips;
 406         cmd = kzalloc(fifo_size, GFP_KERNEL);
 407         if (unlikely(cmd == NULL)) {
 408                 DRM_ERROR("Temporary fifo memory alloc failed.\n");
 409                 return -ENOMEM;
 410         }
 411
 412         left = clips->x1;
 413         right = clips->x2;
 414         top = clips->y1;
 415         bottom = clips->y2;
 416
 417         /* skip the first clip rect */
 418         for (i = 1, clips_ptr = clips + inc;
 419              i < num_clips; i++, clips_ptr += inc) {
 420                 left = min_t(int, left, (int)clips_ptr->x1);
 421                 right = max_t(int, right, (int)clips_ptr->x2);
 422                 top = min_t(int, top, (int)clips_ptr->y1);
 423                 bottom = max_t(int, bottom, (int)clips_ptr->y2);
 424         }
 425
 426         /* only need to do this once */
 427         memset(cmd, 0, fifo_size);
 428         cmd->header.id = cpu_to_le32(SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN);
 429         cmd->header.size = cpu_to_le32(fifo_size - sizeof(cmd->header));
 430
 431         cmd->body.srcRect.left = left;
 432         cmd->body.srcRect.right = right;
 433         cmd->body.srcRect.top = top;
 434         cmd->body.srcRect.bottom = bottom;
 435
 436         clips_ptr = clips;
 437         blits = (SVGASignedRect *)&cmd[1];
 438         for (i = 0; i < num_clips; i++, clips_ptr += inc) {
 439                 blits[i].left   = clips_ptr->x1 - left;
 440                 blits[i].right  = clips_ptr->x2 - left;
 441                 blits[i].top    = clips_ptr->y1 - top;
 442                 blits[i].bottom = clips_ptr->y2 - top;
 443         }
 444
 445         /* do per unit writing, reuse fifo for each */
 446         for (i = 0; i < num_units; i++) {
 447                 struct vmw_display_unit *unit = units[i];
 448                 int clip_x1 = left - unit->crtc.x;
 449                 int clip_y1 = top - unit->crtc.y;
 450                 int clip_x2 = right - unit->crtc.x;
 451                 int clip_y2 = bottom - unit->crtc.y;
 452
 453                 /* skip any crtcs that misses the clip region */
 454                 if (clip_x1 >= unit->crtc.mode.hdisplay ||
 455                     clip_y1 >= unit->crtc.mode.vdisplay ||
 456                     clip_x2 <= 0 || clip_y2 <= 0)
 457                         continue;
 458
 459                 /* need to reset sid as it is changed by execbuf */
 460                 cmd->body.srcImage.sid = cpu_to_le32(framebuffer->user_handle);
 461
 462                 cmd->body.destScreenId = unit->unit;
 463
 464                 /*
 465                  * The blit command is a lot more resilient then the
 466                  * readback command when it comes to clip rects. So its
 467                  * okay to go out of bounds.
 468                  */
 469
 470                 cmd->body.destRect.left = clip_x1;
 471                 cmd->body.destRect.right = clip_x2;
 472                 cmd->body.destRect.top = clip_y1;
 473                 cmd->body.destRect.bottom = clip_y2;
 474
 475
 476                 ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
 477                                           fifo_size, 0, NULL);
 478
 479                 if (unlikely(ret != 0))
 480                         break;
 481         }
 482
 483         kfree(cmd);
 484
 485         return ret;
 486 }
 487
 488 int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
 489                                   struct drm_file *file_priv,
 490                                   unsigned flags, unsigned color,
 491                                   struct drm_clip_rect *clips,
 492                                   unsigned num_clips)
 493 {
 494         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 495         struct vmw_master *vmaster = vmw_master(file_priv->master);
 496         struct vmw_framebuffer_surface *vfbs =
 497                 vmw_framebuffer_to_vfbs(framebuffer);
 498         struct drm_clip_rect norect;
 499         int ret, inc = 1;
 500
 501         if (unlikely(vfbs->master != file_priv->master))
 502                 return -EINVAL;
 503
 504         /* Require ScreenObject support for 3D */
 505         if (!dev_priv->sou_priv)
 506                 return -EINVAL;
 507
 508         ret = ttm_read_lock(&vmaster->lock, true);
 509         if (unlikely(ret != 0))
 510                 return ret;
 511
 512         if (!num_clips) {
 513                 num_clips = 1;
 514                 clips = &norect;
 515                 norect.x1 = norect.y1 = 0;
 516                 norect.x2 = framebuffer->width;
 517                 norect.y2 = framebuffer->height;
 518         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 519                 num_clips /= 2;
 520                 inc = 2; /* skip source rects */
 521         }
 522
 523         ret = do_surface_dirty_sou(dev_priv, file_priv, &vfbs->base,
 524                                    flags, color,
 525                                    clips, num_clips, inc);
 526
 527         ttm_read_unlock(&vmaster->lock);
 528         return 0;
 529 }
 530
 531 static struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
 532         .destroy = vmw_framebuffer_surface_destroy,
 533         .dirty = vmw_framebuffer_surface_dirty,
 534         .create_handle = vmw_framebuffer_create_handle,
 535 };
 536
 537 static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
 538                                            struct drm_file *file_priv,
 539                                            struct vmw_surface *surface,
 540                                            struct vmw_framebuffer **out,
 541                                            const struct drm_mode_fb_cmd
 542                                            *mode_cmd)
 543
 544 {
 545         struct drm_device *dev = dev_priv->dev;
 546         struct vmw_framebuffer_surface *vfbs;
 547         enum SVGA3dSurfaceFormat format;
 548         struct vmw_master *vmaster = vmw_master(file_priv->master);
 549         int ret;
 550
 551         /* 3D is only supported on HWv8 hosts which supports screen objects */
 552         if (!dev_priv->sou_priv)
 553                 return -ENOSYS;
 554
 555         /*
 556          * Sanity checks.
 557          */
 558
 559         if (unlikely(surface->mip_levels[0] != 1 ||
 560                      surface->num_sizes != 1 ||
 561                      surface->sizes[0].width < mode_cmd->width ||
 562                      surface->sizes[0].height < mode_cmd->height ||
 563                      surface->sizes[0].depth != 1)) {
 564                 DRM_ERROR("Incompatible surface dimensions "
 565                           "for requested mode.\n");
 566                 return -EINVAL;
 567         }
 568
 569         switch (mode_cmd->depth) {
 570         case 32:
 571                 format = SVGA3D_A8R8G8B8;
 572                 break;
 573         case 24:
 574                 format = SVGA3D_X8R8G8B8;
 575                 break;
 576         case 16:
 577                 format = SVGA3D_R5G6B5;
 578                 break;
 579         case 15:
 580                 format = SVGA3D_A1R5G5B5;
 581                 break;
 582         case 8:
 583                 format = SVGA3D_LUMINANCE8;
 584                 break;
 585         default:
 586                 DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 587                 return -EINVAL;
 588         }
 589
 590         if (unlikely(format != surface->format)) {
 591                 DRM_ERROR("Invalid surface format for requested mode.\n");
 592                 return -EINVAL;
 593         }
 594
 595         vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
 596         if (!vfbs) {
 597                 ret = -ENOMEM;
 598                 goto out_err1;
 599         }
 600
 601         ret = drm_framebuffer_init(dev, &vfbs->base.base,
 602                                    &vmw_framebuffer_surface_funcs);
 603         if (ret)
 604                 goto out_err2;
 605
 606         if (!vmw_surface_reference(surface)) {
 607                 DRM_ERROR("failed to reference surface %p\n", surface);
 608                 goto out_err3;
 609         }
 610
 611         /* XXX get the first 3 from the surface info */
 612         vfbs->base.base.bits_per_pixel = mode_cmd->bpp;
 613         vfbs->base.base.pitches[0] = mode_cmd->pitch;
 614         vfbs->base.base.depth = mode_cmd->depth;
 615         vfbs->base.base.width = mode_cmd->width;
 616         vfbs->base.base.height = mode_cmd->height;
 617         vfbs->surface = surface;
 618         vfbs->base.user_handle = mode_cmd->handle;
 619         vfbs->master = drm_master_get(file_priv->master);
 620
 621         mutex_lock(&vmaster->fb_surf_mutex);
 622         list_add_tail(&vfbs->head, &vmaster->fb_surf);
 623         mutex_unlock(&vmaster->fb_surf_mutex);
 624
 625         *out = &vfbs->base;
 626
 627         return 0;
 628
 629 out_err3:
 630         drm_framebuffer_cleanup(&vfbs->base.base);
 631 out_err2:
 632         kfree(vfbs);
 633 out_err1:
 634         return ret;
 635 }
 636
 637 /*
 638  * Dmabuf framebuffer code
 639  */
 640
 641 #define vmw_framebuffer_to_vfbd(x) \
 642         container_of(x, struct vmw_framebuffer_dmabuf, base.base)
 643
 644 struct vmw_framebuffer_dmabuf {
 645         struct vmw_framebuffer base;
 646         struct vmw_dma_buffer *buffer;
 647 };
 648
 649 void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
 650 {
 651         struct vmw_framebuffer_dmabuf *vfbd =
 652                 vmw_framebuffer_to_vfbd(framebuffer);
 653
 654         drm_framebuffer_cleanup(framebuffer);
 655         vmw_dmabuf_unreference(&vfbd->buffer);
 656         ttm_base_object_unref(&vfbd->base.user_obj);
 657
 658         kfree(vfbd);
 659 }
 660
 661 static int do_dmabuf_dirty_ldu(struct vmw_private *dev_priv,
 662                                struct vmw_framebuffer *framebuffer,
 663                                unsigned flags, unsigned color,
 664                                struct drm_clip_rect *clips,
 665                                unsigned num_clips, int increment)
 666 {
 667         size_t fifo_size;
 668         int i;
 669
 670         struct {
 671                 uint32_t header;
 672                 SVGAFifoCmdUpdate body;
 673         } *cmd;
 674
 675         fifo_size = sizeof(*cmd) * num_clips;
 676         cmd = vmw_fifo_reserve(dev_priv, fifo_size);
 677         if (unlikely(cmd == NULL)) {
 678                 DRM_ERROR("Fifo reserve failed.\n");
 679                 return -ENOMEM;
 680         }
 681
 682         memset(cmd, 0, fifo_size);
 683         for (i = 0; i < num_clips; i++, clips += increment) {
 684                 cmd[i].header = cpu_to_le32(SVGA_CMD_UPDATE);
 685                 cmd[i].body.x = cpu_to_le32(clips->x1);
 686                 cmd[i].body.y = cpu_to_le32(clips->y1);
 687                 cmd[i].body.width = cpu_to_le32(clips->x2 - clips->x1);
 688                 cmd[i].body.height = cpu_to_le32(clips->y2 - clips->y1);
 689         }
 690
 691         vmw_fifo_commit(dev_priv, fifo_size);
 692         return 0;
 693 }
 694
 695 static int do_dmabuf_define_gmrfb(struct drm_file *file_priv,
 696                                   struct vmw_private *dev_priv,
 697                                   struct vmw_framebuffer *framebuffer)
 698 {
 699         int depth = framebuffer->base.depth;
 700         size_t fifo_size;
 701         int ret;
 702
 703         struct {
 704                 uint32_t header;
 705                 SVGAFifoCmdDefineGMRFB body;
 706         } *cmd;
 707
 708         /* Emulate RGBA support, contrary to svga_reg.h this is not
 709          * supported by hosts. This is only a problem if we are reading
 710          * this value later and expecting what we uploaded back.
 711          */
 712         if (depth == 32)
 713                 depth = 24;
 714
 715         fifo_size = sizeof(*cmd);
 716         cmd = kmalloc(fifo_size, GFP_KERNEL);
 717         if (unlikely(cmd == NULL)) {
 718                 DRM_ERROR("Failed to allocate temporary cmd buffer.\n");
 719                 return -ENOMEM;
 720         }
 721
 722         memset(cmd, 0, fifo_size);
 723         cmd->header = SVGA_CMD_DEFINE_GMRFB;
 724         cmd->body.format.bitsPerPixel = framebuffer->base.bits_per_pixel;
 725         cmd->body.format.colorDepth = depth;
 726         cmd->body.format.reserved = 0;
 727         cmd->body.bytesPerLine = framebuffer->base.pitches[0];
 728         cmd->body.ptr.gmrId = framebuffer->user_handle;
 729         cmd->body.ptr.offset = 0;
 730
 731         ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
 732                                   fifo_size, 0, NULL);
 733
 734         kfree(cmd);
 735
 736         return ret;
 737 }
 738
 739 static int do_dmabuf_dirty_sou(struct drm_file *file_priv,
 740                                struct vmw_private *dev_priv,
 741                                struct vmw_framebuffer *framebuffer,
 742                                unsigned flags, unsigned color,
 743                                struct drm_clip_rect *clips,
 744                                unsigned num_clips, int increment)
 745 {
 746         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
 747         struct drm_clip_rect *clips_ptr;
 748         int i, k, num_units, ret;
 749         struct drm_crtc *crtc;
 750         size_t fifo_size;
 751
 752         struct {
 753                 uint32_t header;
 754                 SVGAFifoCmdBlitGMRFBToScreen body;
 755         } *blits;
 756
 757         ret = do_dmabuf_define_gmrfb(file_priv, dev_priv, framebuffer);
 758         if (unlikely(ret != 0))
 759                 return ret; /* define_gmrfb prints warnings */
 760
 761         fifo_size = sizeof(*blits) * num_clips;
 762         blits = kmalloc(fifo_size, GFP_KERNEL);
 763         if (unlikely(blits == NULL)) {
 764                 DRM_ERROR("Failed to allocate temporary cmd buffer.\n");
 765                 return -ENOMEM;
 766         }
 767
 768         num_units = 0;
 769         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
 770                 if (crtc->fb != &framebuffer->base)
 771                         continue;
 772                 units[num_units++] = vmw_crtc_to_du(crtc);
 773         }
 774
 775         for (k = 0; k < num_units; k++) {
 776                 struct vmw_display_unit *unit = units[k];
 777                 int hit_num = 0;
 778
 779                 clips_ptr = clips;
 780                 for (i = 0; i < num_clips; i++, clips_ptr += increment) {
 781                         int clip_x1 = clips_ptr->x1 - unit->crtc.x;
 782                         int clip_y1 = clips_ptr->y1 - unit->crtc.y;
 783                         int clip_x2 = clips_ptr->x2 - unit->crtc.x;
 784                         int clip_y2 = clips_ptr->y2 - unit->crtc.y;
 785
 786                         /* skip any crtcs that misses the clip region */
 787                         if (clip_x1 >= unit->crtc.mode.hdisplay ||
 788                             clip_y1 >= unit->crtc.mode.vdisplay ||
 789                             clip_x2 <= 0 || clip_y2 <= 0)
 790                                 continue;
 791
 792                         blits[hit_num].header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
 793                         blits[hit_num].body.destScreenId = unit->unit;
 794                         blits[hit_num].body.srcOrigin.x = clips_ptr->x1;
 795                         blits[hit_num].body.srcOrigin.y = clips_ptr->y1;
 796                         blits[hit_num].body.destRect.left = clip_x1;
 797                         blits[hit_num].body.destRect.top = clip_y1;
 798                         blits[hit_num].body.destRect.right = clip_x2;
 799                         blits[hit_num].body.destRect.bottom = clip_y2;
 800                         hit_num++;
 801                 }
 802
 803                 /* no clips hit the crtc */
 804                 if (hit_num == 0)
 805                         continue;
 806
 807                 fifo_size = sizeof(*blits) * hit_num;
 808                 ret = vmw_execbuf_process(file_priv, dev_priv, NULL, blits,
 809                                           fifo_size, 0, NULL);
 810
 811                 if (unlikely(ret != 0))
 812                         break;
 813         }
 814
 815         kfree(blits);
 816
 817         return ret;
 818 }
 819
 820 int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
 821                                  struct drm_file *file_priv,
 822                                  unsigned flags, unsigned color,
 823                                  struct drm_clip_rect *clips,
 824                                  unsigned num_clips)
 825 {
 826         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 827         struct vmw_master *vmaster = vmw_master(file_priv->master);
 828         struct vmw_framebuffer_dmabuf *vfbd =
 829                 vmw_framebuffer_to_vfbd(framebuffer);
 830         struct drm_clip_rect norect;
 831         int ret, increment = 1;
 832
 833         ret = ttm_read_lock(&vmaster->lock, true);
 834         if (unlikely(ret != 0))
 835                 return ret;
 836
 837         if (!num_clips) {
 838                 num_clips = 1;
 839                 clips = &norect;
 840                 norect.x1 = norect.y1 = 0;
 841                 norect.x2 = framebuffer->width;
 842                 norect.y2 = framebuffer->height;
 843         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 844                 num_clips /= 2;
 845                 increment = 2;
 846         }
 847
 848         if (dev_priv->ldu_priv) {
 849                 ret = do_dmabuf_dirty_ldu(dev_priv, &vfbd->base,
 850                                           flags, color,
 851                                           clips, num_clips, increment);
 852         } else {
 853                 ret = do_dmabuf_dirty_sou(file_priv, dev_priv, &vfbd->base,
 854                                           flags, color,
 855                                           clips, num_clips, increment);
 856         }
 857
 858         ttm_read_unlock(&vmaster->lock);
 859         return ret;
 860 }
 861
 862 static struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
 863         .destroy = vmw_framebuffer_dmabuf_destroy,
 864         .dirty = vmw_framebuffer_dmabuf_dirty,
 865         .create_handle = vmw_framebuffer_create_handle,
 866 };
 867
 868 /**
 869  * Pin the dmabuffer to the start of vram.
 870  */
 871 static int vmw_framebuffer_dmabuf_pin(struct vmw_framebuffer *vfb)
 872 {
 873         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 874         struct vmw_framebuffer_dmabuf *vfbd =
 875                 vmw_framebuffer_to_vfbd(&vfb->base);
 876         int ret;
 877
 878         /* This code should not be used with screen objects */
 879         BUG_ON(dev_priv->sou_priv);
 880
 881         vmw_overlay_pause_all(dev_priv);
 882
 883         ret = vmw_dmabuf_to_start_of_vram(dev_priv, vfbd->buffer, true, false);
 884
 885         vmw_overlay_resume_all(dev_priv);
 886
 887         WARN_ON(ret != 0);
 888
 889         return 0;
 890 }
 891
 892 static int vmw_framebuffer_dmabuf_unpin(struct vmw_framebuffer *vfb)
 893 {
 894         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 895         struct vmw_framebuffer_dmabuf *vfbd =
 896                 vmw_framebuffer_to_vfbd(&vfb->base);
 897
 898         if (!vfbd->buffer) {
 899                 WARN_ON(!vfbd->buffer);
 900                 return 0;
 901         }
 902
 903         return vmw_dmabuf_unpin(dev_priv, vfbd->buffer, false);
 904 }
 905
 906 static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
 907                                           struct vmw_dma_buffer *dmabuf,
 908                                           struct vmw_framebuffer **out,
 909                                           const struct drm_mode_fb_cmd
 910                                           *mode_cmd)
 911
 912 {
 913         struct drm_device *dev = dev_priv->dev;
 914         struct vmw_framebuffer_dmabuf *vfbd;
 915         unsigned int requested_size;
 916         int ret;
 917
 918         requested_size = mode_cmd->height * mode_cmd->pitch;
 919         if (unlikely(requested_size > dmabuf->base.num_pages * PAGE_SIZE)) {
 920                 DRM_ERROR("Screen buffer object size is too small "
 921                           "for requested mode.\n");
 922                 return -EINVAL;
 923         }
 924
 925         /* Limited framebuffer color depth support for screen objects */
 926         if (dev_priv->sou_priv) {
 927                 switch (mode_cmd->depth) {
 928                 case 32:
 929                 case 24:
 930                         /* Only support 32 bpp for 32 and 24 depth fbs */
 931                         if (mode_cmd->bpp == 32)
 932                                 break;
 933
 934                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 935                                   mode_cmd->depth, mode_cmd->bpp);
 936                         return -EINVAL;
 937                 case 16:
 938                 case 15:
 939                         /* Only support 16 bpp for 16 and 15 depth fbs */
 940                         if (mode_cmd->bpp == 16)
 941                                 break;
 942
 943                         DRM_ERROR("Invalid color depth/bbp: %d %d\n",
 944                                   mode_cmd->depth, mode_cmd->bpp);
 945                         return -EINVAL;
 946                 default:
 947                         DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
 948                         return -EINVAL;
 949                 }
 950         }
 951
 952         vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
 953         if (!vfbd) {
 954                 ret = -ENOMEM;
 955                 goto out_err1;
 956         }
 957
 958         ret = drm_framebuffer_init(dev, &vfbd->base.base,
 959                                    &vmw_framebuffer_dmabuf_funcs);
 960         if (ret)
 961                 goto out_err2;
 962
 963         if (!vmw_dmabuf_reference(dmabuf)) {
 964                 DRM_ERROR("failed to reference dmabuf %p\n", dmabuf);
 965                 goto out_err3;
 966         }
 967
 968         vfbd->base.base.bits_per_pixel = mode_cmd->bpp;
 969         vfbd->base.base.pitches[0] = mode_cmd->pitch;
 970         vfbd->base.base.depth = mode_cmd->depth;
 971         vfbd->base.base.width = mode_cmd->width;
 972         vfbd->base.base.height = mode_cmd->height;
 973         if (!dev_priv->sou_priv) {
 974                 vfbd->base.pin = vmw_framebuffer_dmabuf_pin;
 975                 vfbd->base.unpin = vmw_framebuffer_dmabuf_unpin;
 976         }
 977         vfbd->base.dmabuf = true;
 978         vfbd->buffer = dmabuf;
 979         vfbd->base.user_handle = mode_cmd->handle;
 980         *out = &vfbd->base;
 981
 982         return 0;
 983
 984 out_err3:
 985         drm_framebuffer_cleanup(&vfbd->base.base);
 986 out_err2:
 987         kfree(vfbd);
 988 out_err1:
 989         return ret;
 990 }
 991
 992 /*
 993  * Generic Kernel modesetting functions
 994  */
 995
 996 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
 997                                                  struct drm_file *file_priv,
 998                                                  struct drm_mode_fb_cmd2 *mode_cmd2)
 999 {
1000         struct vmw_private *dev_priv = vmw_priv(dev);
1001         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1002         struct vmw_framebuffer *vfb = NULL;
1003         struct vmw_surface *surface = NULL;
1004         struct vmw_dma_buffer *bo = NULL;
1005         struct ttm_base_object *user_obj;
1006         struct drm_mode_fb_cmd mode_cmd;
1007         u64 required_size;
1008         int ret;
1009
1010         mode_cmd.width = mode_cmd2->width;
1011         mode_cmd.height = mode_cmd2->height;
1012         mode_cmd.pitch = mode_cmd2->pitches[0];
1013         mode_cmd.handle = mode_cmd2->handles[0];
1014         drm_fb_get_bpp_depth(mode_cmd2->pixel_format, &mode_cmd.depth,
1015                                     &mode_cmd.bpp);
1016
1017         /**
1018          * This code should be conditioned on Screen Objects not being used.
1019          * If screen objects are used, we can allocate a GMR to hold the
1020          * requested framebuffer.
1021          */
1022
1023         required_size = mode_cmd.pitch * mode_cmd.height;
1024         if (unlikely(required_size > (u64) dev_priv->vram_size)) {
1025                 DRM_ERROR("VRAM size is too small for requested mode.\n");
1026                 return ERR_PTR(-ENOMEM);
1027         }
1028
1029         /*
1030          * Take a reference on the user object of the resource
1031          * backing the kms fb. This ensures that user-space handle
1032          * lookups on that resource will always work as long as
1033          * it's registered with a kms framebuffer. This is important,
1034          * since vmw_execbuf_process identifies resources in the
1035          * command stream using user-space handles.
1036          */
1037
1038         user_obj = ttm_base_object_lookup(tfile, mode_cmd.handle);
1039         if (unlikely(user_obj == NULL)) {
1040                 DRM_ERROR("Could not locate requested kms frame buffer.\n");
1041                 return ERR_PTR(-ENOENT);
1042         }
1043
1044         /**
1045          * End conditioned code.
1046          */
1047
1048         ret = vmw_user_surface_lookup_handle(dev_priv, tfile,
1049                                              mode_cmd.handle, &surface);
1050         if (ret)
1051                 goto try_dmabuf;
1052
1053         if (!surface->scanout)
1054                 goto err_not_scanout;
1055
1056         ret = vmw_kms_new_framebuffer_surface(dev_priv, file_priv, surface,
1057                                               &vfb, &mode_cmd);
1058
1059         /* vmw_user_surface_lookup takes one ref so does new_fb */
1060         vmw_surface_unreference(&surface);
1061
1062         if (ret) {
1063                 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1064                 ttm_base_object_unref(&user_obj);
1065                 return ERR_PTR(ret);
1066         } else
1067                 vfb->user_obj = user_obj;
1068         return &vfb->base;
1069
1070 try_dmabuf:
1071         DRM_INFO("%s: trying buffer\n", __func__);
1072
1073         ret = vmw_user_dmabuf_lookup(tfile, mode_cmd.handle, &bo);
1074         if (ret) {
1075                 DRM_ERROR("failed to find buffer: %i\n", ret);
1076                 return ERR_PTR(-ENOENT);
1077         }
1078
1079         ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, bo, &vfb,
1080                                              &mode_cmd);
1081
1082         /* vmw_user_dmabuf_lookup takes one ref so does new_fb */
1083         vmw_dmabuf_unreference(&bo);
1084
1085         if (ret) {
1086                 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1087                 ttm_base_object_unref(&user_obj);
1088                 return ERR_PTR(ret);
1089         } else
1090                 vfb->user_obj = user_obj;
1091
1092         return &vfb->base;
1093
1094 err_not_scanout:
1095         DRM_ERROR("surface not marked as scanout\n");
1096         /* vmw_user_surface_lookup takes one ref */
1097         vmw_surface_unreference(&surface);
1098         ttm_base_object_unref(&user_obj);
1099
1100         return ERR_PTR(-EINVAL);
1101 }
1102
1103 static struct drm_mode_config_funcs vmw_kms_funcs = {
1104         .fb_create = vmw_kms_fb_create,
1105 };
1106
1107 int vmw_kms_present(struct vmw_private *dev_priv,
1108                     struct drm_file *file_priv,
1109                     struct vmw_framebuffer *vfb,
1110                     struct vmw_surface *surface,
1111                     uint32_t sid,
1112                     int32_t destX, int32_t destY,
1113                     struct drm_vmw_rect *clips,
1114                     uint32_t num_clips)
1115 {
1116         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
1117         struct drm_crtc *crtc;
1118         size_t fifo_size;
1119         int i, k, num_units;
1120         int ret = 0; /* silence warning */
1121
1122         struct {
1123                 SVGA3dCmdHeader header;
1124                 SVGA3dCmdBlitSurfaceToScreen body;
1125         } *cmd;
1126         SVGASignedRect *blits;
1127
1128         num_units = 0;
1129         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
1130                 if (crtc->fb != &vfb->base)
1131                         continue;
1132                 units[num_units++] = vmw_crtc_to_du(crtc);
1133         }
1134
1135         BUG_ON(surface == NULL);
1136         BUG_ON(!clips || !num_clips);
1137
1138         fifo_size = sizeof(*cmd) + sizeof(SVGASignedRect) * num_clips;
1139         cmd = kmalloc(fifo_size, GFP_KERNEL);
1140         if (unlikely(cmd == NULL)) {
1141                 DRM_ERROR("Failed to allocate temporary fifo memory.\n");
1142                 return -ENOMEM;
1143         }
1144
1145         /* only need to do this once */
1146         memset(cmd, 0, fifo_size);
1147         cmd->header.id = cpu_to_le32(SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN);
1148         cmd->header.size = cpu_to_le32(fifo_size - sizeof(cmd->header));
1149
1150         cmd->body.srcRect.left = 0;
1151         cmd->body.srcRect.right = surface->sizes[0].width;
1152         cmd->body.srcRect.top = 0;
1153         cmd->body.srcRect.bottom = surface->sizes[0].height;
1154
1155         blits = (SVGASignedRect *)&cmd[1];
1156         for (i = 0; i < num_clips; i++) {
1157                 blits[i].left   = clips[i].x;
1158                 blits[i].right  = clips[i].x + clips[i].w;
1159                 blits[i].top    = clips[i].y;
1160                 blits[i].bottom = clips[i].y + clips[i].h;
1161         }
1162
1163         for (k = 0; k < num_units; k++) {
1164                 struct vmw_display_unit *unit = units[k];
1165                 int clip_x1 = destX - unit->crtc.x;
1166                 int clip_y1 = destY - unit->crtc.y;
1167                 int clip_x2 = clip_x1 + surface->sizes[0].width;
1168                 int clip_y2 = clip_y1 + surface->sizes[0].height;
1169
1170                 /* skip any crtcs that misses the clip region */
1171                 if (clip_x1 >= unit->crtc.mode.hdisplay ||
1172                     clip_y1 >= unit->crtc.mode.vdisplay ||
1173                     clip_x2 <= 0 || clip_y2 <= 0)
1174                         continue;
1175
1176                 /* need to reset sid as it is changed by execbuf */
1177                 cmd->body.srcImage.sid = sid;
1178
1179                 cmd->body.destScreenId = unit->unit;
1180
1181                 /*
1182                  * The blit command is a lot more resilient then the
1183                  * readback command when it comes to clip rects. So its
1184                  * okay to go out of bounds.
1185                  */
1186
1187                 cmd->body.destRect.left = clip_x1;
1188                 cmd->body.destRect.right = clip_x2;
1189                 cmd->body.destRect.top = clip_y1;
1190                 cmd->body.destRect.bottom = clip_y2;
1191
1192                 ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
1193                                           fifo_size, 0, NULL);
1194
1195                 if (unlikely(ret != 0))
1196                         break;
1197         }
1198
1199         kfree(cmd);
1200
1201         return ret;
1202 }
1203
1204 int vmw_kms_readback(struct vmw_private *dev_priv,
1205                      struct drm_file *file_priv,
1206                      struct vmw_framebuffer *vfb,
1207                      struct drm_vmw_fence_rep __user *user_fence_rep,
1208                      struct drm_vmw_rect *clips,
1209                      uint32_t num_clips)
1210 {
1211         struct vmw_framebuffer_dmabuf *vfbd =
1212                 vmw_framebuffer_to_vfbd(&vfb->base);
1213         struct vmw_dma_buffer *dmabuf = vfbd->buffer;
1214         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
1215         struct drm_crtc *crtc;
1216         size_t fifo_size;
1217         int i, k, ret, num_units, blits_pos;
1218
1219         struct {
1220                 uint32_t header;
1221                 SVGAFifoCmdDefineGMRFB body;
1222         } *cmd;
1223         struct {
1224                 uint32_t header;
1225                 SVGAFifoCmdBlitScreenToGMRFB body;
1226         } *blits;
1227
1228         num_units = 0;
1229         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
1230                 if (crtc->fb != &vfb->base)
1231                         continue;
1232                 units[num_units++] = vmw_crtc_to_du(crtc);
1233         }
1234
1235         BUG_ON(dmabuf == NULL);
1236         BUG_ON(!clips || !num_clips);
1237
1238         /* take a safe guess at fifo size */
1239         fifo_size = sizeof(*cmd) + sizeof(*blits) * num_clips * num_units;
1240         cmd = kmalloc(fifo_size, GFP_KERNEL);
1241         if (unlikely(cmd == NULL)) {
1242                 DRM_ERROR("Failed to allocate temporary fifo memory.\n");
1243                 return -ENOMEM;
1244         }
1245
1246         memset(cmd, 0, fifo_size);
1247         cmd->header = SVGA_CMD_DEFINE_GMRFB;
1248         cmd->body.format.bitsPerPixel = vfb->base.bits_per_pixel;
1249         cmd->body.format.colorDepth = vfb->base.depth;
1250         cmd->body.format.reserved = 0;
1251         cmd->body.bytesPerLine = vfb->base.pitches[0];
1252         cmd->body.ptr.gmrId = vfb->user_handle;
1253         cmd->body.ptr.offset = 0;
1254
1255         blits = (void *)&cmd[1];
1256         blits_pos = 0;
1257         for (i = 0; i < num_units; i++) {
1258                 struct drm_vmw_rect *c = clips;
1259                 for (k = 0; k < num_clips; k++, c++) {
1260                         /* transform clip coords to crtc origin based coords */
1261                         int clip_x1 = c->x - units[i]->crtc.x;
1262                         int clip_x2 = c->x - units[i]->crtc.x + c->w;
1263                         int clip_y1 = c->y - units[i]->crtc.y;
1264                         int clip_y2 = c->y - units[i]->crtc.y + c->h;
1265                         int dest_x = c->x;
1266                         int dest_y = c->y;
1267
1268                         /* compensate for clipping, we negate
1269                          * a negative number and add that.
1270                          */
1271                         if (clip_x1 < 0)
1272                                 dest_x += -clip_x1;
1273                         if (clip_y1 < 0)
1274                                 dest_y += -clip_y1;
1275
1276                         /* clip */
1277                         clip_x1 = max(clip_x1, 0);
1278                         clip_y1 = max(clip_y1, 0);
1279                         clip_x2 = min(clip_x2, units[i]->crtc.mode.hdisplay);
1280                         clip_y2 = min(clip_y2, units[i]->crtc.mode.vdisplay);
1281
1282                         /* and cull any rects that misses the crtc */
1283                         if (clip_x1 >= units[i]->crtc.mode.hdisplay ||
1284                             clip_y1 >= units[i]->crtc.mode.vdisplay ||
1285                             clip_x2 <= 0 || clip_y2 <= 0)
1286                                 continue;
1287
1288                         blits[blits_pos].header = SVGA_CMD_BLIT_SCREEN_TO_GMRFB;
1289                         blits[blits_pos].body.srcScreenId = units[i]->unit;
1290                         blits[blits_pos].body.destOrigin.x = dest_x;
1291                         blits[blits_pos].body.destOrigin.y = dest_y;
1292
1293                         blits[blits_pos].body.srcRect.left = clip_x1;
1294                         blits[blits_pos].body.srcRect.top = clip_y1;
1295                         blits[blits_pos].body.srcRect.right = clip_x2;
1296                         blits[blits_pos].body.srcRect.bottom = clip_y2;
1297                         blits_pos++;
1298                 }
1299         }
1300         /* reset size here and use calculated exact size from loops */
1301         fifo_size = sizeof(*cmd) + sizeof(*blits) * blits_pos;
1302
1303         ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd, fifo_size,
1304                                   0, user_fence_rep);
1305
1306         kfree(cmd);
1307
1308         return ret;
1309 }
1310
1311 int vmw_kms_init(struct vmw_private *dev_priv)
1312 {
1313         struct drm_device *dev = dev_priv->dev;
1314         int ret;
1315
1316         drm_mode_config_init(dev);
1317         dev->mode_config.funcs = &vmw_kms_funcs;
1318         dev->mode_config.min_width = 1;
1319         dev->mode_config.min_height = 1;
1320         /* assumed largest fb size */
1321         dev->mode_config.max_width = 8192;
1322         dev->mode_config.max_height = 8192;
1323
1324         ret = vmw_kms_init_screen_object_display(dev_priv);
1325         if (ret) /* Fallback */
1326                 (void)vmw_kms_init_legacy_display_system(dev_priv);
1327
1328         return 0;
1329 }
1330
1331 int vmw_kms_close(struct vmw_private *dev_priv)
1332 {
1333         /*
1334          * Docs says we should take the lock before calling this function
1335          * but since it destroys encoders and our destructor calls
1336          * drm_encoder_cleanup which takes the lock we deadlock.
1337          */
1338         drm_mode_config_cleanup(dev_priv->dev);
1339         if (dev_priv->sou_priv)
1340                 vmw_kms_close_screen_object_display(dev_priv);
1341         else
1342                 vmw_kms_close_legacy_display_system(dev_priv);
1343         return 0;
1344 }
1345
1346 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1347                                 struct drm_file *file_priv)
1348 {
1349         struct drm_vmw_cursor_bypass_arg *arg = data;
1350         struct vmw_display_unit *du;
1351         struct drm_mode_object *obj;
1352         struct drm_crtc *crtc;
1353         int ret = 0;
1354
1355
1356         mutex_lock(&dev->mode_config.mutex);
1357         if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1358
1359                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1360                         du = vmw_crtc_to_du(crtc);
1361                         du->hotspot_x = arg->xhot;
1362                         du->hotspot_y = arg->yhot;
1363                 }
1364
1365                 mutex_unlock(&dev->mode_config.mutex);
1366                 return 0;
1367         }
1368
1369         obj = drm_mode_object_find(dev, arg->crtc_id, DRM_MODE_OBJECT_CRTC);
1370         if (!obj) {
1371                 ret = -EINVAL;
1372                 goto out;
1373         }
1374
1375         crtc = obj_to_crtc(obj);
1376         du = vmw_crtc_to_du(crtc);
1377
1378         du->hotspot_x = arg->xhot;
1379         du->hotspot_y = arg->yhot;
1380
1381 out:
1382         mutex_unlock(&dev->mode_config.mutex);
1383
1384         return ret;
1385 }
1386
1387 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1388                         unsigned width, unsigned height, unsigned pitch,
1389                         unsigned bpp, unsigned depth)
1390 {
1391         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1392                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1393         else if (vmw_fifo_have_pitchlock(vmw_priv))
1394                 iowrite32(pitch, vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1395         vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1396         vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1397         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1398
1399         if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1400                 DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1401                           depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1402                 return -EINVAL;
1403         }
1404
1405         return 0;
1406 }
1407
1408 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1409 {
1410         struct vmw_vga_topology_state *save;
1411         uint32_t i;
1412
1413         vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1414         vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1415         vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1416         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1417                 vmw_priv->vga_pitchlock =
1418                   vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1419         else if (vmw_fifo_have_pitchlock(vmw_priv))
1420                 vmw_priv->vga_pitchlock = ioread32(vmw_priv->mmio_virt +
1421                                                        SVGA_FIFO_PITCHLOCK);
1422
1423         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1424                 return 0;
1425
1426         vmw_priv->num_displays = vmw_read(vmw_priv,
1427                                           SVGA_REG_NUM_GUEST_DISPLAYS);
1428
1429         if (vmw_priv->num_displays == 0)
1430                 vmw_priv->num_displays = 1;
1431
1432         for (i = 0; i < vmw_priv->num_displays; ++i) {
1433                 save = &vmw_priv->vga_save[i];
1434                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1435                 save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1436                 save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1437                 save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1438                 save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1439                 save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1440                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1441                 if (i == 0 && vmw_priv->num_displays == 1 &&
1442                     save->width == 0 && save->height == 0) {
1443
1444                         /*
1445                          * It should be fairly safe to assume that these
1446                          * values are uninitialized.
1447                          */
1448
1449                         save->width = vmw_priv->vga_width - save->pos_x;
1450                         save->height = vmw_priv->vga_height - save->pos_y;
1451                 }
1452         }
1453
1454         return 0;
1455 }
1456
1457 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1458 {
1459         struct vmw_vga_topology_state *save;
1460         uint32_t i;
1461
1462         vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1463         vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1464         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1465         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1466                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1467                           vmw_priv->vga_pitchlock);
1468         else if (vmw_fifo_have_pitchlock(vmw_priv))
1469                 iowrite32(vmw_priv->vga_pitchlock,
1470                           vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1471
1472         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1473                 return 0;
1474
1475         for (i = 0; i < vmw_priv->num_displays; ++i) {
1476                 save = &vmw_priv->vga_save[i];
1477                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1478                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1479                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1480                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1481                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1482                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1483                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1484         }
1485
1486         return 0;
1487 }
1488
1489 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1490                                 uint32_t pitch,
1491                                 uint32_t height)
1492 {
1493         return ((u64) pitch * (u64) height) < (u64) dev_priv->vram_size;
1494 }
1495
1496
1497 /**
1498  * Function called by DRM code called with vbl_lock held.
1499  */
1500 u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc)
1501 {
1502         return 0;
1503 }
1504
1505 /**
1506  * Function called by DRM code called with vbl_lock held.
1507  */
1508 int vmw_enable_vblank(struct drm_device *dev, int crtc)
1509 {
1510         return -ENOSYS;
1511 }
1512
1513 /**
1514  * Function called by DRM code called with vbl_lock held.
1515  */
1516 void vmw_disable_vblank(struct drm_device *dev, int crtc)
1517 {
1518 }
1519
1520
1521 /*
1522  * Small shared kms functions.
1523  */
1524
1525 int vmw_du_update_layout(struct vmw_private *dev_priv, unsigned num,
1526                          struct drm_vmw_rect *rects)
1527 {
1528         struct drm_device *dev = dev_priv->dev;
1529         struct vmw_display_unit *du;
1530         struct drm_connector *con;
1531
1532         mutex_lock(&dev->mode_config.mutex);
1533
1534 #if 0
1535         {
1536                 unsigned int i;
1537
1538                 DRM_INFO("%s: new layout ", __func__);
1539                 for (i = 0; i < num; i++)
1540                         DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
1541                                  rects[i].w, rects[i].h);
1542                 DRM_INFO("\n");
1543         }
1544 #endif
1545
1546         list_for_each_entry(con, &dev->mode_config.connector_list, head) {
1547                 du = vmw_connector_to_du(con);
1548                 if (num > du->unit) {
1549                         du->pref_width = rects[du->unit].w;
1550                         du->pref_height = rects[du->unit].h;
1551                         du->pref_active = true;
1552                         du->gui_x = rects[du->unit].x;
1553                         du->gui_y = rects[du->unit].y;
1554                 } else {
1555                         du->pref_width = 800;
1556                         du->pref_height = 600;
1557                         du->pref_active = false;
1558                 }
1559                 con->status = vmw_du_connector_detect(con, true);
1560         }
1561
1562         mutex_unlock(&dev->mode_config.mutex);
1563
1564         return 0;
1565 }
1566
1567 void vmw_du_crtc_save(struct drm_crtc *crtc)
1568 {
1569 }
1570
1571 void vmw_du_crtc_restore(struct drm_crtc *crtc)
1572 {
1573 }
1574
1575 void vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
1576                            u16 *r, u16 *g, u16 *b,
1577                            uint32_t start, uint32_t size)
1578 {
1579         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
1580         int i;
1581
1582         for (i = 0; i < size; i++) {
1583                 DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
1584                           r[i], g[i], b[i]);
1585                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
1586                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
1587                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
1588         }
1589 }
1590
1591 void vmw_du_connector_dpms(struct drm_connector *connector, int mode)
1592 {
1593 }
1594
1595 void vmw_du_connector_save(struct drm_connector *connector)
1596 {
1597 }
1598
1599 void vmw_du_connector_restore(struct drm_connector *connector)
1600 {
1601 }
1602
1603 enum drm_connector_status
1604 vmw_du_connector_detect(struct drm_connector *connector, bool force)
1605 {
1606         uint32_t num_displays;
1607         struct drm_device *dev = connector->dev;
1608         struct vmw_private *dev_priv = vmw_priv(dev);
1609         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1610
1611         mutex_lock(&dev_priv->hw_mutex);
1612         num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
1613         mutex_unlock(&dev_priv->hw_mutex);
1614
1615         return ((vmw_connector_to_du(connector)->unit < num_displays &&
1616                  du->pref_active) ?
1617                 connector_status_connected : connector_status_disconnected);
1618 }
1619
1620 static struct drm_display_mode vmw_kms_connector_builtin[] = {
1621         /* 640x480@60Hz */
1622         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
1623                    752, 800, 0, 480, 489, 492, 525, 0,
1624                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1625         /* 800x600@60Hz */
1626         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
1627                    968, 1056, 0, 600, 601, 605, 628, 0,
1628                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1629         /* 1024x768@60Hz */
1630         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1631                    1184, 1344, 0, 768, 771, 777, 806, 0,
1632                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1633         /* 1152x864@75Hz */
1634         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1635                    1344, 1600, 0, 864, 865, 868, 900, 0,
1636                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1637         /* 1280x768@60Hz */
1638         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
1639                    1472, 1664, 0, 768, 771, 778, 798, 0,
1640                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1641         /* 1280x800@60Hz */
1642         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
1643                    1480, 1680, 0, 800, 803, 809, 831, 0,
1644                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
1645         /* 1280x960@60Hz */
1646         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
1647                    1488, 1800, 0, 960, 961, 964, 1000, 0,
1648                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1649         /* 1280x1024@60Hz */
1650         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
1651                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
1652                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1653         /* 1360x768@60Hz */
1654         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
1655                    1536, 1792, 0, 768, 771, 777, 795, 0,
1656                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1657         /* 1440x1050@60Hz */
1658         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
1659                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
1660                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1661         /* 1440x900@60Hz */
1662         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
1663                    1672, 1904, 0, 900, 903, 909, 934, 0,
1664                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1665         /* 1600x1200@60Hz */
1666         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
1667                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
1668                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1669         /* 1680x1050@60Hz */
1670         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
1671                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
1672                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1673         /* 1792x1344@60Hz */
1674         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
1675                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
1676                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1677         /* 1853x1392@60Hz */
1678         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
1679                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
1680                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1681         /* 1920x1200@60Hz */
1682         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
1683                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
1684                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1685         /* 1920x1440@60Hz */
1686         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
1687                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
1688                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1689         /* 2560x1600@60Hz */
1690         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
1691                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
1692                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1693         /* Terminate */
1694         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
1695 };
1696
1697 /**
1698  * vmw_guess_mode_timing - Provide fake timings for a
1699  * 60Hz vrefresh mode.
1700  *
1701  * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
1702  * members filled in.
1703  */
1704 static void vmw_guess_mode_timing(struct drm_display_mode *mode)
1705 {
1706         mode->hsync_start = mode->hdisplay + 50;
1707         mode->hsync_end = mode->hsync_start + 50;
1708         mode->htotal = mode->hsync_end + 50;
1709
1710         mode->vsync_start = mode->vdisplay + 50;
1711         mode->vsync_end = mode->vsync_start + 50;
1712         mode->vtotal = mode->vsync_end + 50;
1713
1714         mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
1715         mode->vrefresh = drm_mode_vrefresh(mode);
1716 }
1717
1718
1719 int vmw_du_connector_fill_modes(struct drm_connector *connector,
1720                                 uint32_t max_width, uint32_t max_height)
1721 {
1722         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1723         struct drm_device *dev = connector->dev;
1724         struct vmw_private *dev_priv = vmw_priv(dev);
1725         struct drm_display_mode *mode = NULL;
1726         struct drm_display_mode *bmode;
1727         struct drm_display_mode prefmode = { DRM_MODE("preferred",
1728                 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
1729                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1730                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
1731         };
1732         int i;
1733
1734         /* Add preferred mode */
1735         {
1736                 mode = drm_mode_duplicate(dev, &prefmode);
1737                 if (!mode)
1738                         return 0;
1739                 mode->hdisplay = du->pref_width;
1740                 mode->vdisplay = du->pref_height;
1741                 vmw_guess_mode_timing(mode);
1742
1743                 if (vmw_kms_validate_mode_vram(dev_priv, mode->hdisplay * 2,
1744                                                mode->vdisplay)) {
1745                         drm_mode_probed_add(connector, mode);
1746                 } else {
1747                         drm_mode_destroy(dev, mode);
1748                         mode = NULL;
1749                 }
1750
1751                 if (du->pref_mode) {
1752                         list_del_init(&du->pref_mode->head);
1753                         drm_mode_destroy(dev, du->pref_mode);
1754                 }
1755
1756                 /* mode might be null here, this is intended */
1757                 du->pref_mode = mode;
1758         }
1759
1760         for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
1761                 bmode = &vmw_kms_connector_builtin[i];
1762                 if (bmode->hdisplay > max_width ||
1763                     bmode->vdisplay > max_height)
1764                         continue;
1765
1766                 if (!vmw_kms_validate_mode_vram(dev_priv, bmode->hdisplay * 2,
1767                                                 bmode->vdisplay))
1768                         continue;
1769
1770                 mode = drm_mode_duplicate(dev, bmode);
1771                 if (!mode)
1772                         return 0;
1773                 mode->vrefresh = drm_mode_vrefresh(mode);
1774
1775                 drm_mode_probed_add(connector, mode);
1776         }
1777
1778         /* Move the prefered mode first, help apps pick the right mode. */
1779         if (du->pref_mode)
1780                 list_move(&du->pref_mode->head, &connector->probed_modes);
1781
1782         drm_mode_connector_list_update(connector);
1783
1784         return 1;
1785 }
1786
1787 int vmw_du_connector_set_property(struct drm_connector *connector,
1788                                   struct drm_property *property,
1789                                   uint64_t val)
1790 {
1791         return 0;
1792 }
1793
1794
1795 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
1796                                 struct drm_file *file_priv)
1797 {
1798         struct vmw_private *dev_priv = vmw_priv(dev);
1799         struct drm_vmw_update_layout_arg *arg =
1800                 (struct drm_vmw_update_layout_arg *)data;
1801         struct vmw_master *vmaster = vmw_master(file_priv->master);
1802         void __user *user_rects;
1803         struct drm_vmw_rect *rects;
1804         unsigned rects_size;
1805         int ret;
1806         int i;
1807         struct drm_mode_config *mode_config = &dev->mode_config;
1808
1809         ret = ttm_read_lock(&vmaster->lock, true);
1810         if (unlikely(ret != 0))
1811                 return ret;
1812
1813         if (!arg->num_outputs) {
1814                 struct drm_vmw_rect def_rect = {0, 0, 800, 600};
1815                 vmw_du_update_layout(dev_priv, 1, &def_rect);
1816                 goto out_unlock;
1817         }
1818
1819         rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
1820         rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
1821                         GFP_KERNEL);
1822         if (unlikely(!rects)) {
1823                 ret = -ENOMEM;
1824                 goto out_unlock;
1825         }
1826
1827         user_rects = (void __user *)(unsigned long)arg->rects;
1828         ret = copy_from_user(rects, user_rects, rects_size);
1829         if (unlikely(ret != 0)) {
1830                 DRM_ERROR("Failed to get rects.\n");
1831                 ret = -EFAULT;
1832                 goto out_free;
1833         }
1834
1835         for (i = 0; i < arg->num_outputs; ++i) {
1836                 if (rects[i].x < 0 ||
1837                     rects[i].y < 0 ||
1838                     rects[i].x + rects[i].w > mode_config->max_width ||
1839                     rects[i].y + rects[i].h > mode_config->max_height) {
1840                         DRM_ERROR("Invalid GUI layout.\n");
1841                         ret = -EINVAL;
1842                         goto out_free;
1843                 }
1844         }
1845
1846         vmw_du_update_layout(dev_priv, arg->num_outputs, rects);
1847
1848 out_free:
1849         kfree(rects);
1850 out_unlock:
1851         ttm_read_unlock(&vmaster->lock);
1852         return ret;
1853 }