drivers/gpu/drm/vmwgfx/vmwgfx_fb.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2007 David Airlie
   4  * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  22  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  23  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  24  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  25  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 #include <linux/export.h>
  30
  31 #include <drm/drmP.h>
  32 #include "vmwgfx_drv.h"
  33 #include "vmwgfx_kms.h"
  34
  35 #include <drm/ttm/ttm_placement.h>
  36
  37 #define VMW_DIRTY_DELAY (HZ / 30)
  38
  39 struct vmw_fb_par {
  40         struct vmw_private *vmw_priv;
  41
  42         void *vmalloc;
  43
  44         struct mutex bo_mutex;
  45         struct vmw_dma_buffer *vmw_bo;
  46         struct ttm_bo_kmap_obj map;
  47         void *bo_ptr;
  48         unsigned bo_size;
  49         struct drm_framebuffer *set_fb;
  50         struct drm_display_mode *set_mode;
  51         u32 fb_x;
  52         u32 fb_y;
  53         bool bo_iowrite;
  54
  55         u32 pseudo_palette[17];
  56
  57         unsigned max_width;
  58         unsigned max_height;
  59
  60         struct {
  61                 spinlock_t lock;
  62                 bool active;
  63                 unsigned x1;
  64                 unsigned y1;
  65                 unsigned x2;
  66                 unsigned y2;
  67         } dirty;
  68
  69         struct drm_crtc *crtc;
  70         struct drm_connector *con;
  71         struct delayed_work local_work;
  72 };
  73
  74 static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
  75                             unsigned blue, unsigned transp,
  76                             struct fb_info *info)
  77 {
  78         struct vmw_fb_par *par = info->par;
  79         u32 *pal = par->pseudo_palette;
  80
  81         if (regno > 15) {
  82                 DRM_ERROR("Bad regno %u.\n", regno);
  83                 return 1;
  84         }
  85
  86         switch (par->set_fb->depth) {
  87         case 24:
  88         case 32:
  89                 pal[regno] = ((red & 0xff00) << 8) |
  90                               (green & 0xff00) |
  91                              ((blue  & 0xff00) >> 8);
  92                 break;
  93         default:
  94                 DRM_ERROR("Bad depth %u, bpp %u.\n", par->set_fb->depth,
  95                           par->set_fb->bits_per_pixel);
  96                 return 1;
  97         }
  98
  99         return 0;
 100 }
 101
 102 static int vmw_fb_check_var(struct fb_var_screeninfo *var,
 103                             struct fb_info *info)
 104 {
 105         int depth = var->bits_per_pixel;
 106         struct vmw_fb_par *par = info->par;
 107         struct vmw_private *vmw_priv = par->vmw_priv;
 108
 109         switch (var->bits_per_pixel) {
 110         case 32:
 111                 depth = (var->transp.length > 0) ? 32 : 24;
 112                 break;
 113         default:
 114                 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
 115                 return -EINVAL;
 116         }
 117
 118         switch (depth) {
 119         case 24:
 120                 var->red.offset = 16;
 121                 var->green.offset = 8;
 122                 var->blue.offset = 0;
 123                 var->red.length = 8;
 124                 var->green.length = 8;
 125                 var->blue.length = 8;
 126                 var->transp.length = 0;
 127                 var->transp.offset = 0;
 128                 break;
 129         case 32:
 130                 var->red.offset = 16;
 131                 var->green.offset = 8;
 132                 var->blue.offset = 0;
 133                 var->red.length = 8;
 134                 var->green.length = 8;
 135                 var->blue.length = 8;
 136                 var->transp.length = 8;
 137                 var->transp.offset = 24;
 138                 break;
 139         default:
 140                 DRM_ERROR("Bad depth %u.\n", depth);
 141                 return -EINVAL;
 142         }
 143
 144         if ((var->xoffset + var->xres) > par->max_width ||
 145             (var->yoffset + var->yres) > par->max_height) {
 146                 DRM_ERROR("Requested geom can not fit in framebuffer\n");
 147                 return -EINVAL;
 148         }
 149
 150         if (!vmw_kms_validate_mode_vram(vmw_priv,
 151                                         var->xres * var->bits_per_pixel/8,
 152                                         var->yoffset + var->yres)) {
 153                 DRM_ERROR("Requested geom can not fit in framebuffer\n");
 154                 return -EINVAL;
 155         }
 156
 157         return 0;
 158 }
 159
 160 static int vmw_fb_blank(int blank, struct fb_info *info)
 161 {
 162         return 0;
 163 }
 164
 165 /*
 166  * Dirty code
 167  */
 168
 169 static void vmw_fb_dirty_flush(struct work_struct *work)
 170 {
 171         struct vmw_fb_par *par = container_of(work, struct vmw_fb_par,
 172                                               local_work.work);
 173         struct vmw_private *vmw_priv = par->vmw_priv;
 174         struct fb_info *info = vmw_priv->fb_info;
 175         unsigned long irq_flags;
 176         s32 dst_x1, dst_x2, dst_y1, dst_y2, w, h;
 177         u32 cpp, max_x, max_y;
 178         struct drm_clip_rect clip;
 179         struct drm_framebuffer *cur_fb;
 180         u8 *src_ptr, *dst_ptr;
 181
 182         if (vmw_priv->suspended)
 183                 return;
 184
 185         mutex_lock(&par->bo_mutex);
 186         cur_fb = par->set_fb;
 187         if (!cur_fb)
 188                 goto out_unlock;
 189
 190         spin_lock_irqsave(&par->dirty.lock, irq_flags);
 191         if (!par->dirty.active) {
 192                 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
 193                 goto out_unlock;
 194         }
 195
 196         /*
 197          * Handle panning when copying from vmalloc to framebuffer.
 198          * Clip dirty area to framebuffer.
 199          */
 200         cpp = (cur_fb->bits_per_pixel + 7) / 8;
 201         max_x = par->fb_x + cur_fb->width;
 202         max_y = par->fb_y + cur_fb->height;
 203
 204         dst_x1 = par->dirty.x1 - par->fb_x;
 205         dst_y1 = par->dirty.y1 - par->fb_y;
 206         dst_x1 = max_t(s32, dst_x1, 0);
 207         dst_y1 = max_t(s32, dst_y1, 0);
 208
 209         dst_x2 = par->dirty.x2 - par->fb_x;
 210         dst_y2 = par->dirty.y2 - par->fb_y;
 211         dst_x2 = min_t(s32, dst_x2, max_x);
 212         dst_y2 = min_t(s32, dst_y2, max_y);
 213         w = dst_x2 - dst_x1;
 214         h = dst_y2 - dst_y1;
 215         w = max_t(s32, 0, w);
 216         h = max_t(s32, 0, h);
 217
 218         par->dirty.x1 = par->dirty.x2 = 0;
 219         par->dirty.y1 = par->dirty.y2 = 0;
 220         spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
 221
 222         if (w && h) {
 223                 dst_ptr = (u8 *)par->bo_ptr  +
 224                         (dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp);
 225                 src_ptr = (u8 *)par->vmalloc +
 226                         ((dst_y1 + par->fb_y) * info->fix.line_length +
 227                          (dst_x1 + par->fb_x) * cpp);
 228
 229                 while (h-- > 0) {
 230                         memcpy(dst_ptr, src_ptr, w*cpp);
 231                         dst_ptr += par->set_fb->pitches[0];
 232                         src_ptr += info->fix.line_length;
 233                 }
 234
 235                 clip.x1 = dst_x1;
 236                 clip.x2 = dst_x2;
 237                 clip.y1 = dst_y1;
 238                 clip.y2 = dst_y2;
 239
 240                 WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0,
 241                                                        &clip, 1));
 242                 vmw_fifo_flush(vmw_priv, false);
 243         }
 244 out_unlock:
 245         mutex_unlock(&par->bo_mutex);
 246 }
 247
 248 static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
 249                               unsigned x1, unsigned y1,
 250                               unsigned width, unsigned height)
 251 {
 252         unsigned long flags;
 253         unsigned x2 = x1 + width;
 254         unsigned y2 = y1 + height;
 255
 256         spin_lock_irqsave(&par->dirty.lock, flags);
 257         if (par->dirty.x1 == par->dirty.x2) {
 258                 par->dirty.x1 = x1;
 259                 par->dirty.y1 = y1;
 260                 par->dirty.x2 = x2;
 261                 par->dirty.y2 = y2;
 262                 /* if we are active start the dirty work
 263                  * we share the work with the defio system */
 264                 if (par->dirty.active)
 265                         schedule_delayed_work(&par->local_work,
 266                                               VMW_DIRTY_DELAY);
 267         } else {
 268                 if (x1 < par->dirty.x1)
 269                         par->dirty.x1 = x1;
 270                 if (y1 < par->dirty.y1)
 271                         par->dirty.y1 = y1;
 272                 if (x2 > par->dirty.x2)
 273                         par->dirty.x2 = x2;
 274                 if (y2 > par->dirty.y2)
 275                         par->dirty.y2 = y2;
 276         }
 277         spin_unlock_irqrestore(&par->dirty.lock, flags);
 278 }
 279
 280 static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
 281                               struct fb_info *info)
 282 {
 283         struct vmw_fb_par *par = info->par;
 284
 285         if ((var->xoffset + var->xres) > var->xres_virtual ||
 286             (var->yoffset + var->yres) > var->yres_virtual) {
 287                 DRM_ERROR("Requested panning can not fit in framebuffer\n");
 288                 return -EINVAL;
 289         }
 290
 291         mutex_lock(&par->bo_mutex);
 292         par->fb_x = var->xoffset;
 293         par->fb_y = var->yoffset;
 294         if (par->set_fb)
 295                 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width,
 296                                   par->set_fb->height);
 297         mutex_unlock(&par->bo_mutex);
 298
 299         return 0;
 300 }
 301
 302 static void vmw_deferred_io(struct fb_info *info,
 303                             struct list_head *pagelist)
 304 {
 305         struct vmw_fb_par *par = info->par;
 306         unsigned long start, end, min, max;
 307         unsigned long flags;
 308         struct page *page;
 309         int y1, y2;
 310
 311         min = ULONG_MAX;
 312         max = 0;
 313         list_for_each_entry(page, pagelist, lru) {
 314                 start = page->index << PAGE_SHIFT;
 315                 end = start + PAGE_SIZE - 1;
 316                 min = min(min, start);
 317                 max = max(max, end);
 318         }
 319
 320         if (min < max) {
 321                 y1 = min / info->fix.line_length;
 322                 y2 = (max / info->fix.line_length) + 1;
 323
 324                 spin_lock_irqsave(&par->dirty.lock, flags);
 325                 par->dirty.x1 = 0;
 326                 par->dirty.y1 = y1;
 327                 par->dirty.x2 = info->var.xres;
 328                 par->dirty.y2 = y2;
 329                 spin_unlock_irqrestore(&par->dirty.lock, flags);
 330
 331                 /*
 332                  * Since we've already waited on this work once, try to
 333                  * execute asap.
 334                  */
 335                 cancel_delayed_work(&par->local_work);
 336                 schedule_delayed_work(&par->local_work, 0);
 337         }
 338 };
 339
 340 static struct fb_deferred_io vmw_defio = {
 341         .delay          = VMW_DIRTY_DELAY,
 342         .deferred_io    = vmw_deferred_io,
 343 };
 344
 345 /*
 346  * Draw code
 347  */
 348
 349 static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 350 {
 351         cfb_fillrect(info, rect);
 352         vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
 353                           rect->width, rect->height);
 354 }
 355
 356 static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
 357 {
 358         cfb_copyarea(info, region);
 359         vmw_fb_dirty_mark(info->par, region->dx, region->dy,
 360                           region->width, region->height);
 361 }
 362
 363 static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
 364 {
 365         cfb_imageblit(info, image);
 366         vmw_fb_dirty_mark(info->par, image->dx, image->dy,
 367                           image->width, image->height);
 368 }
 369
 370 /*
 371  * Bring up code
 372  */
 373
 374 static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
 375                             size_t size, struct vmw_dma_buffer **out)
 376 {
 377         struct vmw_dma_buffer *vmw_bo;
 378         int ret;
 379
 380         (void) ttm_write_lock(&vmw_priv->reservation_sem, false);
 381
 382         vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
 383         if (!vmw_bo) {
 384                 ret = -ENOMEM;
 385                 goto err_unlock;
 386         }
 387
 388         ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
 389                               &vmw_sys_placement,
 390                               false,
 391                               &vmw_dmabuf_bo_free);
 392         if (unlikely(ret != 0))
 393                 goto err_unlock; /* init frees the buffer on failure */
 394
 395         *out = vmw_bo;
 396         ttm_write_unlock(&vmw_priv->reservation_sem);
 397
 398         return 0;
 399
 400 err_unlock:
 401         ttm_write_unlock(&vmw_priv->reservation_sem);
 402         return ret;
 403 }
 404
 405 static int vmw_fb_compute_depth(struct fb_var_screeninfo *var,
 406                                 int *depth)
 407 {
 408         switch (var->bits_per_pixel) {
 409         case 32:
 410                 *depth = (var->transp.length > 0) ? 32 : 24;
 411                 break;
 412         default:
 413                 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
 414                 return -EINVAL;
 415         }
 416
 417         return 0;
 418 }
 419
 420 static int vmw_fb_kms_detach(struct vmw_fb_par *par,
 421                              bool detach_bo,
 422                              bool unref_bo)
 423 {
 424         struct drm_framebuffer *cur_fb = par->set_fb;
 425         int ret;
 426
 427         /* Detach the KMS framebuffer from crtcs */
 428         if (par->set_mode) {
 429                 struct drm_mode_set set;
 430
 431                 set.crtc = par->crtc;
 432                 set.x = 0;
 433                 set.y = 0;
 434                 set.mode = NULL;
 435                 set.fb = NULL;
 436                 set.num_connectors = 1;
 437                 set.connectors = &par->con;
 438                 ret = drm_mode_set_config_internal(&set);
 439                 if (ret) {
 440                         DRM_ERROR("Could not unset a mode.\n");
 441                         return ret;
 442                 }
 443                 drm_mode_destroy(par->vmw_priv->dev, par->set_mode);
 444                 par->set_mode = NULL;
 445         }
 446
 447         if (cur_fb) {
 448                 drm_framebuffer_unreference(cur_fb);
 449                 par->set_fb = NULL;
 450         }
 451
 452         if (par->vmw_bo && detach_bo) {
 453                 if (par->bo_ptr) {
 454                         ttm_bo_kunmap(&par->map);
 455                         par->bo_ptr = NULL;
 456                 }
 457                 if (unref_bo)
 458                         vmw_dmabuf_unreference(&par->vmw_bo);
 459                 else
 460                         vmw_dmabuf_unpin(par->vmw_priv, par->vmw_bo, false);
 461         }
 462
 463         return 0;
 464 }
 465
 466 static int vmw_fb_kms_framebuffer(struct fb_info *info)
 467 {
 468         struct drm_mode_fb_cmd2 mode_cmd;
 469         struct vmw_fb_par *par = info->par;
 470         struct fb_var_screeninfo *var = &info->var;
 471         struct drm_framebuffer *cur_fb;
 472         struct vmw_framebuffer *vfb;
 473         int ret = 0, depth;
 474         size_t new_bo_size;
 475
 476         ret = vmw_fb_compute_depth(var, &depth);
 477         if (ret)
 478                 return ret;
 479
 480         mode_cmd.width = var->xres;
 481         mode_cmd.height = var->yres;
 482         mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width;
 483         mode_cmd.pixel_format =
 484                 drm_mode_legacy_fb_format(var->bits_per_pixel, depth);
 485
 486         cur_fb = par->set_fb;
 487         if (cur_fb && cur_fb->width == mode_cmd.width &&
 488             cur_fb->height == mode_cmd.height &&
 489             cur_fb->pixel_format == mode_cmd.pixel_format &&
 490             cur_fb->pitches[0] == mode_cmd.pitches[0])
 491                 return 0;
 492
 493         /* Need new buffer object ? */
 494         new_bo_size = (size_t) mode_cmd.pitches[0] * (size_t) mode_cmd.height;
 495         ret = vmw_fb_kms_detach(par,
 496                                 par->bo_size < new_bo_size ||
 497                                 par->bo_size > 2*new_bo_size,
 498                                 true);
 499         if (ret)
 500                 return ret;
 501
 502         if (!par->vmw_bo) {
 503                 ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size,
 504                                        &par->vmw_bo);
 505                 if (ret) {
 506                         DRM_ERROR("Failed creating a buffer object for "
 507                                   "fbdev.\n");
 508                         return ret;
 509                 }
 510                 par->bo_size = new_bo_size;
 511         }
 512
 513         vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL,
 514                                       true, &mode_cmd);
 515         if (IS_ERR(vfb))
 516                 return PTR_ERR(vfb);
 517
 518         par->set_fb = &vfb->base;
 519
 520         return 0;
 521 }
 522
 523 static int vmw_fb_set_par(struct fb_info *info)
 524 {
 525         struct vmw_fb_par *par = info->par;
 526         struct vmw_private *vmw_priv = par->vmw_priv;
 527         struct drm_mode_set set;
 528         struct fb_var_screeninfo *var = &info->var;
 529         struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
 530                 DRM_MODE_TYPE_DRIVER,
 531                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 532                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
 533         };
 534         struct drm_display_mode *old_mode;
 535         struct drm_display_mode *mode;
 536         int ret;
 537
 538         old_mode = par->set_mode;
 539         mode = drm_mode_duplicate(vmw_priv->dev, &new_mode);
 540         if (!mode) {
 541                 DRM_ERROR("Could not create new fb mode.\n");
 542                 return -ENOMEM;
 543         }
 544
 545         mode->hdisplay = var->xres;
 546         mode->vdisplay = var->yres;
 547         vmw_guess_mode_timing(mode);
 548
 549         if (old_mode && drm_mode_equal(old_mode, mode)) {
 550                 drm_mode_destroy(vmw_priv->dev, mode);
 551                 mode = old_mode;
 552                 old_mode = NULL;
 553         } else if (!vmw_kms_validate_mode_vram(vmw_priv,
 554                                         mode->hdisplay *
 555                                         DIV_ROUND_UP(var->bits_per_pixel, 8),
 556                                         mode->vdisplay)) {
 557                 drm_mode_destroy(vmw_priv->dev, mode);
 558                 return -EINVAL;
 559         }
 560
 561         mutex_lock(&par->bo_mutex);
 562         drm_modeset_lock_all(vmw_priv->dev);
 563         ret = vmw_fb_kms_framebuffer(info);
 564         if (ret)
 565                 goto out_unlock;
 566
 567         par->fb_x = var->xoffset;
 568         par->fb_y = var->yoffset;
 569
 570         set.crtc = par->crtc;
 571         set.x = 0;
 572         set.y = 0;
 573         set.mode = mode;
 574         set.fb = par->set_fb;
 575         set.num_connectors = 1;
 576         set.connectors = &par->con;
 577
 578         ret = drm_mode_set_config_internal(&set);
 579         if (ret)
 580                 goto out_unlock;
 581
 582         if (!par->bo_ptr) {
 583                 struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(set.fb);
 584
 585                 /*
 586                  * Pin before mapping. Since we don't know in what placement
 587                  * to pin, call into KMS to do it for us.
 588                  */
 589                 ret = vfb->pin(vfb);
 590                 if (ret) {
 591                         DRM_ERROR("Could not pin the fbdev framebuffer.\n");
 592                         goto out_unlock;
 593                 }
 594
 595                 ret = ttm_bo_kmap(&par->vmw_bo->base, 0,
 596                                   par->vmw_bo->base.num_pages, &par->map);
 597                 if (ret) {
 598                         vfb->unpin(vfb);
 599                         DRM_ERROR("Could not map the fbdev framebuffer.\n");
 600                         goto out_unlock;
 601                 }
 602
 603                 par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
 604         }
 605
 606
 607         vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
 608                           par->set_fb->width, par->set_fb->height);
 609
 610         /* If there already was stuff dirty we wont
 611          * schedule a new work, so lets do it now */
 612
 613         schedule_delayed_work(&par->local_work, 0);
 614
 615 out_unlock:
 616         if (old_mode)
 617                 drm_mode_destroy(vmw_priv->dev, old_mode);
 618         par->set_mode = mode;
 619
 620         drm_modeset_unlock_all(vmw_priv->dev);
 621         mutex_unlock(&par->bo_mutex);
 622
 623         return ret;
 624 }
 625
 626
 627 static struct fb_ops vmw_fb_ops = {
 628         .owner = THIS_MODULE,
 629         .fb_check_var = vmw_fb_check_var,
 630         .fb_set_par = vmw_fb_set_par,
 631         .fb_setcolreg = vmw_fb_setcolreg,
 632         .fb_fillrect = vmw_fb_fillrect,
 633         .fb_copyarea = vmw_fb_copyarea,
 634         .fb_imageblit = vmw_fb_imageblit,
 635         .fb_pan_display = vmw_fb_pan_display,
 636         .fb_blank = vmw_fb_blank,
 637 };
 638
 639 int vmw_fb_init(struct vmw_private *vmw_priv)
 640 {
 641         struct device *device = &vmw_priv->dev->pdev->dev;
 642         struct vmw_fb_par *par;
 643         struct fb_info *info;
 644         unsigned fb_width, fb_height;
 645         unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
 646         struct drm_display_mode *init_mode;
 647         int ret;
 648
 649         fb_bpp = 32;
 650         fb_depth = 24;
 651
 652         /* XXX As shouldn't these be as well. */
 653         fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
 654         fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
 655
 656         fb_pitch = fb_width * fb_bpp / 8;
 657         fb_size = fb_pitch * fb_height;
 658         fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);
 659
 660         info = framebuffer_alloc(sizeof(*par), device);
 661         if (!info)
 662                 return -ENOMEM;
 663
 664         /*
 665          * Par
 666          */
 667         vmw_priv->fb_info = info;
 668         par = info->par;
 669         memset(par, 0, sizeof(*par));
 670         INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
 671         par->vmw_priv = vmw_priv;
 672         par->vmalloc = NULL;
 673         par->max_width = fb_width;
 674         par->max_height = fb_height;
 675
 676         drm_modeset_lock_all(vmw_priv->dev);
 677         ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
 678                                       par->max_height, &par->con,
 679                                       &par->crtc, &init_mode);
 680         if (ret) {
 681                 drm_modeset_unlock_all(vmw_priv->dev);
 682                 goto err_kms;
 683         }
 684
 685         info->var.xres = init_mode->hdisplay;
 686         info->var.yres = init_mode->vdisplay;
 687         drm_modeset_unlock_all(vmw_priv->dev);
 688
 689         /*
 690          * Create buffers and alloc memory
 691          */
 692         par->vmalloc = vzalloc(fb_size);
 693         if (unlikely(par->vmalloc == NULL)) {
 694                 ret = -ENOMEM;
 695                 goto err_free;
 696         }
 697
 698         /*
 699          * Fixed and var
 700          */
 701         strcpy(info->fix.id, "svgadrmfb");
 702         info->fix.type = FB_TYPE_PACKED_PIXELS;
 703         info->fix.visual = FB_VISUAL_TRUECOLOR;
 704         info->fix.type_aux = 0;
 705         info->fix.xpanstep = 1; /* doing it in hw */
 706         info->fix.ypanstep = 1; /* doing it in hw */
 707         info->fix.ywrapstep = 0;
 708         info->fix.accel = FB_ACCEL_NONE;
 709         info->fix.line_length = fb_pitch;
 710
 711         info->fix.smem_start = 0;
 712         info->fix.smem_len = fb_size;
 713
 714         info->pseudo_palette = par->pseudo_palette;
 715         info->screen_base = (char __iomem *)par->vmalloc;
 716         info->screen_size = fb_size;
 717
 718         info->flags = FBINFO_DEFAULT;
 719         info->fbops = &vmw_fb_ops;
 720
 721         /* 24 depth per default */
 722         info->var.red.offset = 16;
 723         info->var.green.offset = 8;
 724         info->var.blue.offset = 0;
 725         info->var.red.length = 8;
 726         info->var.green.length = 8;
 727         info->var.blue.length = 8;
 728         info->var.transp.offset = 0;
 729         info->var.transp.length = 0;
 730
 731         info->var.xres_virtual = fb_width;
 732         info->var.yres_virtual = fb_height;
 733         info->var.bits_per_pixel = fb_bpp;
 734         info->var.xoffset = 0;
 735         info->var.yoffset = 0;
 736         info->var.activate = FB_ACTIVATE_NOW;
 737         info->var.height = -1;
 738         info->var.width = -1;
 739
 740         /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
 741         info->apertures = alloc_apertures(1);
 742         if (!info->apertures) {
 743                 ret = -ENOMEM;
 744                 goto err_aper;
 745         }
 746         info->apertures->ranges[0].base = vmw_priv->vram_start;
 747         info->apertures->ranges[0].size = vmw_priv->vram_size;
 748
 749         /*
 750          * Dirty & Deferred IO
 751          */
 752         par->dirty.x1 = par->dirty.x2 = 0;
 753         par->dirty.y1 = par->dirty.y2 = 0;
 754         par->dirty.active = true;
 755         spin_lock_init(&par->dirty.lock);
 756         mutex_init(&par->bo_mutex);
 757         info->fbdefio = &vmw_defio;
 758         fb_deferred_io_init(info);
 759
 760         ret = register_framebuffer(info);
 761         if (unlikely(ret != 0))
 762                 goto err_defio;
 763
 764         vmw_fb_set_par(info);
 765
 766         return 0;
 767
 768 err_defio:
 769         fb_deferred_io_cleanup(info);
 770 err_aper:
 771 err_free:
 772         vfree(par->vmalloc);
 773 err_kms:
 774         framebuffer_release(info);
 775         vmw_priv->fb_info = NULL;
 776
 777         return ret;
 778 }
 779
 780 int vmw_fb_close(struct vmw_private *vmw_priv)
 781 {
 782         struct fb_info *info;
 783         struct vmw_fb_par *par;
 784
 785         if (!vmw_priv->fb_info)
 786                 return 0;
 787
 788         info = vmw_priv->fb_info;
 789         par = info->par;
 790
 791         /* ??? order */
 792         fb_deferred_io_cleanup(info);
 793         cancel_delayed_work_sync(&par->local_work);
 794         unregister_framebuffer(info);
 795
 796         (void) vmw_fb_kms_detach(par, true, true);
 797
 798         vfree(par->vmalloc);
 799         framebuffer_release(info);
 800
 801         return 0;
 802 }
 803
 804 int vmw_fb_off(struct vmw_private *vmw_priv)
 805 {
 806         struct fb_info *info;
 807         struct vmw_fb_par *par;
 808         unsigned long flags;
 809
 810         if (!vmw_priv->fb_info)
 811                 return -EINVAL;
 812
 813         info = vmw_priv->fb_info;
 814         par = info->par;
 815
 816         spin_lock_irqsave(&par->dirty.lock, flags);
 817         par->dirty.active = false;
 818         spin_unlock_irqrestore(&par->dirty.lock, flags);
 819
 820         flush_delayed_work(&info->deferred_work);
 821         flush_delayed_work(&par->local_work);
 822
 823         mutex_lock(&par->bo_mutex);
 824         (void) vmw_fb_kms_detach(par, true, false);
 825         mutex_unlock(&par->bo_mutex);
 826
 827         return 0;
 828 }
 829
 830 int vmw_fb_on(struct vmw_private *vmw_priv)
 831 {
 832         struct fb_info *info;
 833         struct vmw_fb_par *par;
 834         unsigned long flags;
 835
 836         if (!vmw_priv->fb_info)
 837                 return -EINVAL;
 838
 839         info = vmw_priv->fb_info;
 840         par = info->par;
 841
 842         vmw_fb_set_par(info);
 843         spin_lock_irqsave(&par->dirty.lock, flags);
 844         par->dirty.active = true;
 845         spin_unlock_irqrestore(&par->dirty.lock, flags);
 846
 847         return 0;
 848 }