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