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->format->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",
  95                           par->set_fb->format->depth,
  96                           par->set_fb->format->cpp[0] * 8);
  97                 return 1;
  98         }
  99
 100         return 0;
 101 }
 102
 103 static int vmw_fb_check_var(struct fb_var_screeninfo *var,
 104                             struct fb_info *info)
 105 {
 106         int depth = var->bits_per_pixel;
 107         struct vmw_fb_par *par = info->par;
 108         struct vmw_private *vmw_priv = par->vmw_priv;
 109
 110         switch (var->bits_per_pixel) {
 111         case 32:
 112                 depth = (var->transp.length > 0) ? 32 : 24;
 113                 break;
 114         default:
 115                 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
 116                 return -EINVAL;
 117         }
 118
 119         switch (depth) {
 120         case 24:
 121                 var->red.offset = 16;
 122                 var->green.offset = 8;
 123                 var->blue.offset = 0;
 124                 var->red.length = 8;
 125                 var->green.length = 8;
 126                 var->blue.length = 8;
 127                 var->transp.length = 0;
 128                 var->transp.offset = 0;
 129                 break;
 130         case 32:
 131                 var->red.offset = 16;
 132                 var->green.offset = 8;
 133                 var->blue.offset = 0;
 134                 var->red.length = 8;
 135                 var->green.length = 8;
 136                 var->blue.length = 8;
 137                 var->transp.length = 8;
 138                 var->transp.offset = 24;
 139                 break;
 140         default:
 141                 DRM_ERROR("Bad depth %u.\n", depth);
 142                 return -EINVAL;
 143         }
 144
 145         if ((var->xoffset + var->xres) > par->max_width ||
 146             (var->yoffset + var->yres) > par->max_height) {
 147                 DRM_ERROR("Requested geom can not fit in framebuffer\n");
 148                 return -EINVAL;
 149         }
 150
 151         if (!vmw_kms_validate_mode_vram(vmw_priv,
 152                                         var->xres * var->bits_per_pixel/8,
 153                                         var->yoffset + var->yres)) {
 154                 DRM_ERROR("Requested geom can not fit in framebuffer\n");
 155                 return -EINVAL;
 156         }
 157
 158         return 0;
 159 }
 160
 161 static int vmw_fb_blank(int blank, struct fb_info *info)
 162 {
 163         return 0;
 164 }
 165
 166 /*
 167  * Dirty code
 168  */
 169
 170 static void vmw_fb_dirty_flush(struct work_struct *work)
 171 {
 172         struct vmw_fb_par *par = container_of(work, struct vmw_fb_par,
 173                                               local_work.work);
 174         struct vmw_private *vmw_priv = par->vmw_priv;
 175         struct fb_info *info = vmw_priv->fb_info;
 176         unsigned long irq_flags;
 177         s32 dst_x1, dst_x2, dst_y1, dst_y2, w, h;
 178         u32 cpp, max_x, max_y;
 179         struct drm_clip_rect clip;
 180         struct drm_framebuffer *cur_fb;
 181         u8 *src_ptr, *dst_ptr;
 182
 183         if (vmw_priv->suspended)
 184                 return;
 185
 186         mutex_lock(&par->bo_mutex);
 187         cur_fb = par->set_fb;
 188         if (!cur_fb)
 189                 goto out_unlock;
 190
 191         spin_lock_irqsave(&par->dirty.lock, irq_flags);
 192         if (!par->dirty.active) {
 193                 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
 194                 goto out_unlock;
 195         }
 196
 197         /*
 198          * Handle panning when copying from vmalloc to framebuffer.
 199          * Clip dirty area to framebuffer.
 200          */
 201         cpp = cur_fb->format->cpp[0];
 202         max_x = par->fb_x + cur_fb->width;
 203         max_y = par->fb_y + cur_fb->height;
 204
 205         dst_x1 = par->dirty.x1 - par->fb_x;
 206         dst_y1 = par->dirty.y1 - par->fb_y;
 207         dst_x1 = max_t(s32, dst_x1, 0);
 208         dst_y1 = max_t(s32, dst_y1, 0);
 209
 210         dst_x2 = par->dirty.x2 - par->fb_x;
 211         dst_y2 = par->dirty.y2 - par->fb_y;
 212         dst_x2 = min_t(s32, dst_x2, max_x);
 213         dst_y2 = min_t(s32, dst_y2, max_y);
 214         w = dst_x2 - dst_x1;
 215         h = dst_y2 - dst_y1;
 216         w = max_t(s32, 0, w);
 217         h = max_t(s32, 0, h);
 218
 219         par->dirty.x1 = par->dirty.x2 = 0;
 220         par->dirty.y1 = par->dirty.y2 = 0;
 221         spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
 222
 223         if (w && h) {
 224                 dst_ptr = (u8 *)par->bo_ptr  +
 225                         (dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp);
 226                 src_ptr = (u8 *)par->vmalloc +
 227                         ((dst_y1 + par->fb_y) * info->fix.line_length +
 228                          (dst_x1 + par->fb_x) * cpp);
 229
 230                 while (h-- > 0) {
 231                         memcpy(dst_ptr, src_ptr, w*cpp);
 232                         dst_ptr += par->set_fb->pitches[0];
 233                         src_ptr += info->fix.line_length;
 234                 }
 235
 236                 clip.x1 = dst_x1;
 237                 clip.x2 = dst_x2;
 238                 clip.y1 = dst_y1;
 239                 clip.y2 = dst_y2;
 240
 241                 WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0,
 242                                                        &clip, 1));
 243                 vmw_fifo_flush(vmw_priv, false);
 244         }
 245 out_unlock:
 246         mutex_unlock(&par->bo_mutex);
 247 }
 248
 249 static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
 250                               unsigned x1, unsigned y1,
 251                               unsigned width, unsigned height)
 252 {
 253         unsigned long flags;
 254         unsigned x2 = x1 + width;
 255         unsigned y2 = y1 + height;
 256
 257         spin_lock_irqsave(&par->dirty.lock, flags);
 258         if (par->dirty.x1 == par->dirty.x2) {
 259                 par->dirty.x1 = x1;
 260                 par->dirty.y1 = y1;
 261                 par->dirty.x2 = x2;
 262                 par->dirty.y2 = y2;
 263                 /* if we are active start the dirty work
 264                  * we share the work with the defio system */
 265                 if (par->dirty.active)
 266                         schedule_delayed_work(&par->local_work,
 267                                               VMW_DIRTY_DELAY);
 268         } else {
 269                 if (x1 < par->dirty.x1)
 270                         par->dirty.x1 = x1;
 271                 if (y1 < par->dirty.y1)
 272                         par->dirty.y1 = y1;
 273                 if (x2 > par->dirty.x2)
 274                         par->dirty.x2 = x2;
 275                 if (y2 > par->dirty.y2)
 276                         par->dirty.y2 = y2;
 277         }
 278         spin_unlock_irqrestore(&par->dirty.lock, flags);
 279 }
 280
 281 static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
 282                               struct fb_info *info)
 283 {
 284         struct vmw_fb_par *par = info->par;
 285
 286         if ((var->xoffset + var->xres) > var->xres_virtual ||
 287             (var->yoffset + var->yres) > var->yres_virtual) {
 288                 DRM_ERROR("Requested panning can not fit in framebuffer\n");
 289                 return -EINVAL;
 290         }
 291
 292         mutex_lock(&par->bo_mutex);
 293         par->fb_x = var->xoffset;
 294         par->fb_y = var->yoffset;
 295         if (par->set_fb)
 296                 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width,
 297                                   par->set_fb->height);
 298         mutex_unlock(&par->bo_mutex);
 299
 300         return 0;
 301 }
 302
 303 static void vmw_deferred_io(struct fb_info *info,
 304                             struct list_head *pagelist)
 305 {
 306         struct vmw_fb_par *par = info->par;
 307         unsigned long start, end, min, max;
 308         unsigned long flags;
 309         struct page *page;
 310         int y1, y2;
 311
 312         min = ULONG_MAX;
 313         max = 0;
 314         list_for_each_entry(page, pagelist, lru) {
 315                 start = page->index << PAGE_SHIFT;
 316                 end = start + PAGE_SIZE - 1;
 317                 min = min(min, start);
 318                 max = max(max, end);
 319         }
 320
 321         if (min < max) {
 322                 y1 = min / info->fix.line_length;
 323                 y2 = (max / info->fix.line_length) + 1;
 324
 325                 spin_lock_irqsave(&par->dirty.lock, flags);
 326                 par->dirty.x1 = 0;
 327                 par->dirty.y1 = y1;
 328                 par->dirty.x2 = info->var.xres;
 329                 par->dirty.y2 = y2;
 330                 spin_unlock_irqrestore(&par->dirty.lock, flags);
 331
 332                 /*
 333                  * Since we've already waited on this work once, try to
 334                  * execute asap.
 335                  */
 336                 cancel_delayed_work(&par->local_work);
 337                 schedule_delayed_work(&par->local_work, 0);
 338         }
 339 };
 340
 341 static struct fb_deferred_io vmw_defio = {
 342         .delay          = VMW_DIRTY_DELAY,
 343         .deferred_io    = vmw_deferred_io,
 344 };
 345
 346 /*
 347  * Draw code
 348  */
 349
 350 static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 351 {
 352         cfb_fillrect(info, rect);
 353         vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
 354                           rect->width, rect->height);
 355 }
 356
 357 static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
 358 {
 359         cfb_copyarea(info, region);
 360         vmw_fb_dirty_mark(info->par, region->dx, region->dy,
 361                           region->width, region->height);
 362 }
 363
 364 static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
 365 {
 366         cfb_imageblit(info, image);
 367         vmw_fb_dirty_mark(info->par, image->dx, image->dy,
 368                           image->width, image->height);
 369 }
 370
 371 /*
 372  * Bring up code
 373  */
 374
 375 static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
 376                             size_t size, struct vmw_dma_buffer **out)
 377 {
 378         struct vmw_dma_buffer *vmw_bo;
 379         int ret;
 380
 381         (void) ttm_write_lock(&vmw_priv->reservation_sem, false);
 382
 383         vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
 384         if (!vmw_bo) {
 385                 ret = -ENOMEM;
 386                 goto err_unlock;
 387         }
 388
 389         ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
 390                               &vmw_sys_placement,
 391                               false,
 392                               &vmw_dmabuf_bo_free);
 393         if (unlikely(ret != 0))
 394                 goto err_unlock; /* init frees the buffer on failure */
 395
 396         *out = vmw_bo;
 397         ttm_write_unlock(&vmw_priv->reservation_sem);
 398
 399         return 0;
 400
 401 err_unlock:
 402         ttm_write_unlock(&vmw_priv->reservation_sem);
 403         return ret;
 404 }
 405
 406 static int vmw_fb_compute_depth(struct fb_var_screeninfo *var,
 407                                 int *depth)
 408 {
 409         switch (var->bits_per_pixel) {
 410         case 32:
 411                 *depth = (var->transp.length > 0) ? 32 : 24;
 412                 break;
 413         default:
 414                 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
 415                 return -EINVAL;
 416         }
 417
 418         return 0;
 419 }
 420
 421 static int vmwgfx_set_config_internal(struct drm_mode_set *set)
 422 {
 423         struct drm_crtc *crtc = set->crtc;
 424         struct drm_framebuffer *fb;
 425         struct drm_crtc *tmp;
 426         struct drm_modeset_acquire_ctx *ctx;
 427         struct drm_device *dev = set->crtc->dev;
 428         int ret;
 429
 430         ctx = dev->mode_config.acquire_ctx;
 431
 432 restart:
 433         /*
 434          * NOTE: ->set_config can also disable other crtcs (if we steal all
 435          * connectors from it), hence we need to refcount the fbs across all
 436          * crtcs. Atomic modeset will have saner semantics ...
 437          */
 438         drm_for_each_crtc(tmp, dev)
 439                 tmp->primary->old_fb = tmp->primary->fb;
 440
 441         fb = set->fb;
 442
 443         ret = crtc->funcs->set_config(set, ctx);
 444         if (ret == 0) {
 445                 crtc->primary->crtc = crtc;
 446                 crtc->primary->fb = fb;
 447         }
 448
 449         drm_for_each_crtc(tmp, dev) {
 450                 if (tmp->primary->fb)
 451                         drm_framebuffer_get(tmp->primary->fb);
 452                 if (tmp->primary->old_fb)
 453                         drm_framebuffer_put(tmp->primary->old_fb);
 454                 tmp->primary->old_fb = NULL;
 455         }
 456
 457         if (ret == -EDEADLK) {
 458                 dev->mode_config.acquire_ctx = NULL;
 459
 460 retry_locking:
 461                 drm_modeset_backoff(ctx);
 462
 463                 ret = drm_modeset_lock_all_ctx(dev, ctx);
 464                 if (ret)
 465                         goto retry_locking;
 466
 467                 dev->mode_config.acquire_ctx = ctx;
 468
 469                 goto restart;
 470         }
 471
 472         return ret;
 473 }
 474
 475 static int vmw_fb_kms_detach(struct vmw_fb_par *par,
 476                              bool detach_bo,
 477                              bool unref_bo)
 478 {
 479         struct drm_framebuffer *cur_fb = par->set_fb;
 480         int ret;
 481
 482         /* Detach the KMS framebuffer from crtcs */
 483         if (par->set_mode) {
 484                 struct drm_mode_set set;
 485
 486                 set.crtc = par->crtc;
 487                 set.x = 0;
 488                 set.y = 0;
 489                 set.mode = NULL;
 490                 set.fb = NULL;
 491                 set.num_connectors = 0;
 492                 set.connectors = &par->con;
 493                 ret = vmwgfx_set_config_internal(&set);
 494                 if (ret) {
 495                         DRM_ERROR("Could not unset a mode.\n");
 496                         return ret;
 497                 }
 498                 drm_mode_destroy(par->vmw_priv->dev, par->set_mode);
 499                 par->set_mode = NULL;
 500         }
 501
 502         if (cur_fb) {
 503                 drm_framebuffer_unreference(cur_fb);
 504                 par->set_fb = NULL;
 505         }
 506
 507         if (par->vmw_bo && detach_bo) {
 508                 struct vmw_private *vmw_priv = par->vmw_priv;
 509
 510                 if (par->bo_ptr) {
 511                         ttm_bo_kunmap(&par->map);
 512                         par->bo_ptr = NULL;
 513                 }
 514                 if (unref_bo)
 515                         vmw_dmabuf_unreference(&par->vmw_bo);
 516                 else if (vmw_priv->active_display_unit != vmw_du_legacy)
 517                         vmw_dmabuf_unpin(par->vmw_priv, par->vmw_bo, false);
 518         }
 519
 520         return 0;
 521 }
 522
 523 static int vmw_fb_kms_framebuffer(struct fb_info *info)
 524 {
 525         struct drm_mode_fb_cmd2 mode_cmd;
 526         struct vmw_fb_par *par = info->par;
 527         struct fb_var_screeninfo *var = &info->var;
 528         struct drm_framebuffer *cur_fb;
 529         struct vmw_framebuffer *vfb;
 530         int ret = 0, depth;
 531         size_t new_bo_size;
 532
 533         ret = vmw_fb_compute_depth(var, &depth);
 534         if (ret)
 535                 return ret;
 536
 537         mode_cmd.width = var->xres;
 538         mode_cmd.height = var->yres;
 539         mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width;
 540         mode_cmd.pixel_format =
 541                 drm_mode_legacy_fb_format(var->bits_per_pixel, depth);
 542
 543         cur_fb = par->set_fb;
 544         if (cur_fb && cur_fb->width == mode_cmd.width &&
 545             cur_fb->height == mode_cmd.height &&
 546             cur_fb->format->format == mode_cmd.pixel_format &&
 547             cur_fb->pitches[0] == mode_cmd.pitches[0])
 548                 return 0;
 549
 550         /* Need new buffer object ? */
 551         new_bo_size = (size_t) mode_cmd.pitches[0] * (size_t) mode_cmd.height;
 552         ret = vmw_fb_kms_detach(par,
 553                                 par->bo_size < new_bo_size ||
 554                                 par->bo_size > 2*new_bo_size,
 555                                 true);
 556         if (ret)
 557                 return ret;
 558
 559         if (!par->vmw_bo) {
 560                 ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size,
 561                                        &par->vmw_bo);
 562                 if (ret) {
 563                         DRM_ERROR("Failed creating a buffer object for "
 564                                   "fbdev.\n");
 565                         return ret;
 566                 }
 567                 par->bo_size = new_bo_size;
 568         }
 569
 570         vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL,
 571                                       true, &mode_cmd);
 572         if (IS_ERR(vfb))
 573                 return PTR_ERR(vfb);
 574
 575         par->set_fb = &vfb->base;
 576
 577         return 0;
 578 }
 579
 580 static int vmw_fb_set_par(struct fb_info *info)
 581 {
 582         struct vmw_fb_par *par = info->par;
 583         struct vmw_private *vmw_priv = par->vmw_priv;
 584         struct drm_mode_set set;
 585         struct fb_var_screeninfo *var = &info->var;
 586         struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
 587                 DRM_MODE_TYPE_DRIVER,
 588                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 589                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
 590         };
 591         struct drm_display_mode *old_mode;
 592         struct drm_display_mode *mode;
 593         int ret;
 594
 595         old_mode = par->set_mode;
 596         mode = drm_mode_duplicate(vmw_priv->dev, &new_mode);
 597         if (!mode) {
 598                 DRM_ERROR("Could not create new fb mode.\n");
 599                 return -ENOMEM;
 600         }
 601
 602         mode->hdisplay = var->xres;
 603         mode->vdisplay = var->yres;
 604         vmw_guess_mode_timing(mode);
 605
 606         if (old_mode && drm_mode_equal(old_mode, mode)) {
 607                 drm_mode_destroy(vmw_priv->dev, mode);
 608                 mode = old_mode;
 609                 old_mode = NULL;
 610         } else if (!vmw_kms_validate_mode_vram(vmw_priv,
 611                                         mode->hdisplay *
 612                                         DIV_ROUND_UP(var->bits_per_pixel, 8),
 613                                         mode->vdisplay)) {
 614                 drm_mode_destroy(vmw_priv->dev, mode);
 615                 return -EINVAL;
 616         }
 617
 618         mutex_lock(&par->bo_mutex);
 619         drm_modeset_lock_all(vmw_priv->dev);
 620         ret = vmw_fb_kms_framebuffer(info);
 621         if (ret)
 622                 goto out_unlock;
 623
 624         par->fb_x = var->xoffset;
 625         par->fb_y = var->yoffset;
 626
 627         set.crtc = par->crtc;
 628         set.x = 0;
 629         set.y = 0;
 630         set.mode = mode;
 631         set.fb = par->set_fb;
 632         set.num_connectors = 1;
 633         set.connectors = &par->con;
 634
 635         ret = vmwgfx_set_config_internal(&set);
 636         if (ret)
 637                 goto out_unlock;
 638
 639         if (!par->bo_ptr) {
 640                 struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(set.fb);
 641
 642                 /*
 643                  * Pin before mapping. Since we don't know in what placement
 644                  * to pin, call into KMS to do it for us.  LDU doesn't require
 645                  * additional pinning because set_config() would've pinned
 646                  * it already
 647                  */
 648                 if (vmw_priv->active_display_unit != vmw_du_legacy) {
 649                         ret = vfb->pin(vfb);
 650                         if (ret) {
 651                                 DRM_ERROR("Could not pin the fbdev "
 652                                           "framebuffer.\n");
 653                                 goto out_unlock;
 654                         }
 655                 }
 656
 657                 ret = ttm_bo_kmap(&par->vmw_bo->base, 0,
 658                                   par->vmw_bo->base.num_pages, &par->map);
 659                 if (ret) {
 660                         if (vmw_priv->active_display_unit != vmw_du_legacy)
 661                                 vfb->unpin(vfb);
 662
 663                         DRM_ERROR("Could not map the fbdev framebuffer.\n");
 664                         goto out_unlock;
 665                 }
 666
 667                 par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
 668         }
 669
 670
 671         vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
 672                           par->set_fb->width, par->set_fb->height);
 673
 674         /* If there already was stuff dirty we wont
 675          * schedule a new work, so lets do it now */
 676
 677         schedule_delayed_work(&par->local_work, 0);
 678
 679 out_unlock:
 680         if (old_mode)
 681                 drm_mode_destroy(vmw_priv->dev, old_mode);
 682         par->set_mode = mode;
 683
 684         drm_modeset_unlock_all(vmw_priv->dev);
 685         mutex_unlock(&par->bo_mutex);
 686
 687         return ret;
 688 }
 689
 690
 691 static struct fb_ops vmw_fb_ops = {
 692         .owner = THIS_MODULE,
 693         .fb_check_var = vmw_fb_check_var,
 694         .fb_set_par = vmw_fb_set_par,
 695         .fb_setcolreg = vmw_fb_setcolreg,
 696         .fb_fillrect = vmw_fb_fillrect,
 697         .fb_copyarea = vmw_fb_copyarea,
 698         .fb_imageblit = vmw_fb_imageblit,
 699         .fb_pan_display = vmw_fb_pan_display,
 700         .fb_blank = vmw_fb_blank,
 701 };
 702
 703 int vmw_fb_init(struct vmw_private *vmw_priv)
 704 {
 705         struct device *device = &vmw_priv->dev->pdev->dev;
 706         struct vmw_fb_par *par;
 707         struct fb_info *info;
 708         unsigned fb_width, fb_height;
 709         unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
 710         struct drm_display_mode *init_mode;
 711         int ret;
 712
 713         fb_bpp = 32;
 714         fb_depth = 24;
 715
 716         /* XXX As shouldn't these be as well. */
 717         fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
 718         fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
 719
 720         fb_pitch = fb_width * fb_bpp / 8;
 721         fb_size = fb_pitch * fb_height;
 722         fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);
 723
 724         info = framebuffer_alloc(sizeof(*par), device);
 725         if (!info)
 726                 return -ENOMEM;
 727
 728         /*
 729          * Par
 730          */
 731         vmw_priv->fb_info = info;
 732         par = info->par;
 733         memset(par, 0, sizeof(*par));
 734         INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
 735         par->vmw_priv = vmw_priv;
 736         par->vmalloc = NULL;
 737         par->max_width = fb_width;
 738         par->max_height = fb_height;
 739
 740         drm_modeset_lock_all(vmw_priv->dev);
 741         ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
 742                                       par->max_height, &par->con,
 743                                       &par->crtc, &init_mode);
 744         if (ret) {
 745                 drm_modeset_unlock_all(vmw_priv->dev);
 746                 goto err_kms;
 747         }
 748
 749         info->var.xres = init_mode->hdisplay;
 750         info->var.yres = init_mode->vdisplay;
 751         drm_modeset_unlock_all(vmw_priv->dev);
 752
 753         /*
 754          * Create buffers and alloc memory
 755          */
 756         par->vmalloc = vzalloc(fb_size);
 757         if (unlikely(par->vmalloc == NULL)) {
 758                 ret = -ENOMEM;
 759                 goto err_free;
 760         }
 761
 762         /*
 763          * Fixed and var
 764          */
 765         strcpy(info->fix.id, "svgadrmfb");
 766         info->fix.type = FB_TYPE_PACKED_PIXELS;
 767         info->fix.visual = FB_VISUAL_TRUECOLOR;
 768         info->fix.type_aux = 0;
 769         info->fix.xpanstep = 1; /* doing it in hw */
 770         info->fix.ypanstep = 1; /* doing it in hw */
 771         info->fix.ywrapstep = 0;
 772         info->fix.accel = FB_ACCEL_NONE;
 773         info->fix.line_length = fb_pitch;
 774
 775         info->fix.smem_start = 0;
 776         info->fix.smem_len = fb_size;
 777
 778         info->pseudo_palette = par->pseudo_palette;
 779         info->screen_base = (char __iomem *)par->vmalloc;
 780         info->screen_size = fb_size;
 781
 782         info->fbops = &vmw_fb_ops;
 783
 784         /* 24 depth per default */
 785         info->var.red.offset = 16;
 786         info->var.green.offset = 8;
 787         info->var.blue.offset = 0;
 788         info->var.red.length = 8;
 789         info->var.green.length = 8;
 790         info->var.blue.length = 8;
 791         info->var.transp.offset = 0;
 792         info->var.transp.length = 0;
 793
 794         info->var.xres_virtual = fb_width;
 795         info->var.yres_virtual = fb_height;
 796         info->var.bits_per_pixel = fb_bpp;
 797         info->var.xoffset = 0;
 798         info->var.yoffset = 0;
 799         info->var.activate = FB_ACTIVATE_NOW;
 800         info->var.height = -1;
 801         info->var.width = -1;
 802
 803         /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
 804         info->apertures = alloc_apertures(1);
 805         if (!info->apertures) {
 806                 ret = -ENOMEM;
 807                 goto err_aper;
 808         }
 809         info->apertures->ranges[0].base = vmw_priv->vram_start;
 810         info->apertures->ranges[0].size = vmw_priv->vram_size;
 811
 812         /*
 813          * Dirty & Deferred IO
 814          */
 815         par->dirty.x1 = par->dirty.x2 = 0;
 816         par->dirty.y1 = par->dirty.y2 = 0;
 817         par->dirty.active = true;
 818         spin_lock_init(&par->dirty.lock);
 819         mutex_init(&par->bo_mutex);
 820         info->fbdefio = &vmw_defio;
 821         fb_deferred_io_init(info);
 822
 823         ret = register_framebuffer(info);
 824         if (unlikely(ret != 0))
 825                 goto err_defio;
 826
 827         vmw_fb_set_par(info);
 828
 829         return 0;
 830
 831 err_defio:
 832         fb_deferred_io_cleanup(info);
 833 err_aper:
 834 err_free:
 835         vfree(par->vmalloc);
 836 err_kms:
 837         framebuffer_release(info);
 838         vmw_priv->fb_info = NULL;
 839
 840         return ret;
 841 }
 842
 843 int vmw_fb_close(struct vmw_private *vmw_priv)
 844 {
 845         struct fb_info *info;
 846         struct vmw_fb_par *par;
 847
 848         if (!vmw_priv->fb_info)
 849                 return 0;
 850
 851         info = vmw_priv->fb_info;
 852         par = info->par;
 853
 854         /* ??? order */
 855         fb_deferred_io_cleanup(info);
 856         cancel_delayed_work_sync(&par->local_work);
 857         unregister_framebuffer(info);
 858
 859         (void) vmw_fb_kms_detach(par, true, true);
 860
 861         vfree(par->vmalloc);
 862         framebuffer_release(info);
 863
 864         return 0;
 865 }
 866
 867 int vmw_fb_off(struct vmw_private *vmw_priv)
 868 {
 869         struct fb_info *info;
 870         struct vmw_fb_par *par;
 871         unsigned long flags;
 872
 873         if (!vmw_priv->fb_info)
 874                 return -EINVAL;
 875
 876         info = vmw_priv->fb_info;
 877         par = info->par;
 878
 879         spin_lock_irqsave(&par->dirty.lock, flags);
 880         par->dirty.active = false;
 881         spin_unlock_irqrestore(&par->dirty.lock, flags);
 882
 883         flush_delayed_work(&info->deferred_work);
 884         flush_delayed_work(&par->local_work);
 885
 886         mutex_lock(&par->bo_mutex);
 887         drm_modeset_lock_all(vmw_priv->dev);
 888         (void) vmw_fb_kms_detach(par, true, false);
 889         drm_modeset_unlock_all(vmw_priv->dev);
 890         mutex_unlock(&par->bo_mutex);
 891
 892         return 0;
 893 }
 894
 895 int vmw_fb_on(struct vmw_private *vmw_priv)
 896 {
 897         struct fb_info *info;
 898         struct vmw_fb_par *par;
 899         unsigned long flags;
 900
 901         if (!vmw_priv->fb_info)
 902                 return -EINVAL;
 903
 904         info = vmw_priv->fb_info;
 905         par = info->par;
 906
 907         vmw_fb_set_par(info);
 908         spin_lock_irqsave(&par->dirty.lock, flags);
 909         par->dirty.active = true;
 910         spin_unlock_irqrestore(&par->dirty.lock, flags);
 911
 912         return 0;
 913 }