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 39struct 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 72static 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 101static 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 159static 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 */ 175static 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_read_lock(&vmw_priv->reservation_sem, false); 199 (void) ttm_bo_reserve(&vbo->base, false, false, NULL); 200 virtual = vmw_bo_map_and_cache(vbo); 201 if (!virtual) 202 goto out_unreserve; 203 204 spin_lock_irqsave(&par->dirty.lock, irq_flags); 205 if (!par->dirty.active) { 206 spin_unlock_irqrestore(&par->dirty.lock, irq_flags); 207 goto out_unreserve; 208 } 209 210 /* 211 * Handle panning when copying from vmalloc to framebuffer. 212 * Clip dirty area to framebuffer. 213 */ 214 cpp = cur_fb->format->cpp[0]; 215 max_x = par->fb_x + cur_fb->width; 216 max_y = par->fb_y + cur_fb->height; 217 218 dst_x1 = par->dirty.x1 - par->fb_x; 219 dst_y1 = par->dirty.y1 - par->fb_y; 220 dst_x1 = max_t(s32, dst_x1, 0); 221 dst_y1 = max_t(s32, dst_y1, 0); 222 223 dst_x2 = par->dirty.x2 - par->fb_x; 224 dst_y2 = par->dirty.y2 - par->fb_y; 225 dst_x2 = min_t(s32, dst_x2, max_x); 226 dst_y2 = min_t(s32, dst_y2, max_y); 227 w = dst_x2 - dst_x1; 228 h = dst_y2 - dst_y1; 229 w = max_t(s32, 0, w); 230 h = max_t(s32, 0, h); 231 232 par->dirty.x1 = par->dirty.x2 = 0; 233 par->dirty.y1 = par->dirty.y2 = 0; 234 spin_unlock_irqrestore(&par->dirty.lock, irq_flags); 235 236 if (w && h) { 237 dst_ptr = (u8 *)virtual + 238 (dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp); 239 src_ptr = (u8 *)par->vmalloc + 240 ((dst_y1 + par->fb_y) * info->fix.line_length + 241 (dst_x1 + par->fb_x) * cpp); 242 243 while (h-- > 0) { 244 memcpy(dst_ptr, src_ptr, w*cpp); 245 dst_ptr += par->set_fb->pitches[0]; 246 src_ptr += info->fix.line_length; 247 } 248 249 clip.x1 = dst_x1; 250 clip.x2 = dst_x2; 251 clip.y1 = dst_y1; 252 clip.y2 = dst_y2; 253 } 254 255out_unreserve: 256 ttm_bo_unreserve(&vbo->base); 257 ttm_read_unlock(&vmw_priv->reservation_sem); 258 if (w && h) { 259 WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0, 260 &clip, 1)); 261 vmw_fifo_flush(vmw_priv, false); 262 } 263out_unlock: 264 mutex_unlock(&par->bo_mutex); 265} 266 267static void vmw_fb_dirty_mark(struct vmw_fb_par *par, 268 unsigned x1, unsigned y1, 269 unsigned width, unsigned height) 270{ 271 unsigned long flags; 272 unsigned x2 = x1 + width; 273 unsigned y2 = y1 + height; 274 275 spin_lock_irqsave(&par->dirty.lock, flags); 276 if (par->dirty.x1 == par->dirty.x2) { 277 par->dirty.x1 = x1; 278 par->dirty.y1 = y1; 279 par->dirty.x2 = x2; 280 par->dirty.y2 = y2; 281 /* if we are active start the dirty work 282 * we share the work with the defio system */ 283 if (par->dirty.active) 284 schedule_delayed_work(&par->local_work, 285 VMW_DIRTY_DELAY); 286 } else { 287 if (x1 < par->dirty.x1) 288 par->dirty.x1 = x1; 289 if (y1 < par->dirty.y1) 290 par->dirty.y1 = y1; 291 if (x2 > par->dirty.x2) 292 par->dirty.x2 = x2; 293 if (y2 > par->dirty.y2) 294 par->dirty.y2 = y2; 295 } 296 spin_unlock_irqrestore(&par->dirty.lock, flags); 297} 298 299static int vmw_fb_pan_display(struct fb_var_screeninfo *var, 300 struct fb_info *info) 301{ 302 struct vmw_fb_par *par = info->par; 303 304 if ((var->xoffset + var->xres) > var->xres_virtual || 305 (var->yoffset + var->yres) > var->yres_virtual) { 306 DRM_ERROR("Requested panning can not fit in framebuffer\n"); 307 return -EINVAL; 308 } 309 310 mutex_lock(&par->bo_mutex); 311 par->fb_x = var->xoffset; 312 par->fb_y = var->yoffset; 313 if (par->set_fb) 314 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width, 315 par->set_fb->height); 316 mutex_unlock(&par->bo_mutex); 317 318 return 0; 319} 320 321static void vmw_deferred_io(struct fb_info *info, 322 struct list_head *pagelist) 323{ 324 struct vmw_fb_par *par = info->par; 325 unsigned long start, end, min, max; 326 unsigned long flags; 327 struct page *page; 328 int y1, y2; 329 330 min = ULONG_MAX; 331 max = 0; 332 list_for_each_entry(page, pagelist, lru) { 333 start = page->index << PAGE_SHIFT; 334 end = start + PAGE_SIZE - 1; 335 min = min(min, start); 336 max = max(max, end); 337 } 338 339 if (min < max) { 340 y1 = min / info->fix.line_length; 341 y2 = (max / info->fix.line_length) + 1; 342 343 spin_lock_irqsave(&par->dirty.lock, flags); 344 par->dirty.x1 = 0; 345 par->dirty.y1 = y1; 346 par->dirty.x2 = info->var.xres; 347 par->dirty.y2 = y2; 348 spin_unlock_irqrestore(&par->dirty.lock, flags); 349 350 /* 351 * Since we've already waited on this work once, try to 352 * execute asap. 353 */ 354 cancel_delayed_work(&par->local_work); 355 schedule_delayed_work(&par->local_work, 0); 356 } 357}; 358 359static struct fb_deferred_io vmw_defio = { 360 .delay = VMW_DIRTY_DELAY, 361 .deferred_io = vmw_deferred_io, 362}; 363 364/* 365 * Draw code 366 */ 367 368static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) 369{ 370 cfb_fillrect(info, rect); 371 vmw_fb_dirty_mark(info->par, rect->dx, rect->dy, 372 rect->width, rect->height); 373} 374 375static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region) 376{ 377 cfb_copyarea(info, region); 378 vmw_fb_dirty_mark(info->par, region->dx, region->dy, 379 region->width, region->height); 380} 381 382static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image) 383{ 384 cfb_imageblit(info, image); 385 vmw_fb_dirty_mark(info->par, image->dx, image->dy, 386 image->width, image->height); 387} 388 389/* 390 * Bring up code 391 */ 392 393static int vmw_fb_create_bo(struct vmw_private *vmw_priv, 394 size_t size, struct vmw_buffer_object **out) 395{ 396 struct vmw_buffer_object *vmw_bo; 397 int ret; 398 399 (void) ttm_write_lock(&vmw_priv->reservation_sem, false); 400 401 vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL); 402 if (!vmw_bo) { 403 ret = -ENOMEM; 404 goto err_unlock; 405 } 406 407 ret = vmw_bo_init(vmw_priv, vmw_bo, size, 408 &vmw_sys_placement, 409 false, 410 &vmw_bo_bo_free); 411 if (unlikely(ret != 0)) 412 goto err_unlock; /* init frees the buffer on failure */ 413 414 *out = vmw_bo; 415 ttm_write_unlock(&vmw_priv->reservation_sem); 416 417 return 0; 418 419err_unlock: 420 ttm_write_unlock(&vmw_priv->reservation_sem); 421 return ret; 422} 423 424static int vmw_fb_compute_depth(struct fb_var_screeninfo *var, 425 int *depth) 426{ 427 switch (var->bits_per_pixel) { 428 case 32: 429 *depth = (var->transp.length > 0) ? 32 : 24; 430 break; 431 default: 432 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel); 433 return -EINVAL; 434 } 435 436 return 0; 437} 438 439static int vmwgfx_set_config_internal(struct drm_mode_set *set) 440{ 441 struct drm_crtc *crtc = set->crtc; 442 struct drm_modeset_acquire_ctx ctx; 443 int ret; 444 445 drm_modeset_acquire_init(&ctx, 0); 446 447restart: 448 ret = crtc->funcs->set_config(set, &ctx); 449 450 if (ret == -EDEADLK) { 451 drm_modeset_backoff(&ctx); 452 goto restart; 453 } 454 455 drm_modeset_drop_locks(&ctx); 456 drm_modeset_acquire_fini(&ctx); 457 458 return ret; 459} 460 461static int vmw_fb_kms_detach(struct vmw_fb_par *par, 462 bool detach_bo, 463 bool unref_bo) 464{ 465 struct drm_framebuffer *cur_fb = par->set_fb; 466 int ret; 467 468 /* Detach the KMS framebuffer from crtcs */ 469 if (par->set_mode) { 470 struct drm_mode_set set; 471 472 set.crtc = par->crtc; 473 set.x = 0; 474 set.y = 0; 475 set.mode = NULL; 476 set.fb = NULL; 477 set.num_connectors = 0; 478 set.connectors = &par->con; 479 ret = vmwgfx_set_config_internal(&set); 480 if (ret) { 481 DRM_ERROR("Could not unset a mode.\n"); 482 return ret; 483 } 484 drm_mode_destroy(par->vmw_priv->dev, par->set_mode); 485 par->set_mode = NULL; 486 } 487 488 if (cur_fb) { 489 drm_framebuffer_put(cur_fb); 490 par->set_fb = NULL; 491 } 492 493 if (par->vmw_bo && detach_bo && unref_bo) 494 vmw_bo_unreference(&par->vmw_bo); 495 496 return 0; 497} 498 499static int vmw_fb_kms_framebuffer(struct fb_info *info) 500{ 501 struct drm_mode_fb_cmd2 mode_cmd = {0}; 502 struct vmw_fb_par *par = info->par; 503 struct fb_var_screeninfo *var = &info->var; 504 struct drm_framebuffer *cur_fb; 505 struct vmw_framebuffer *vfb; 506 int ret = 0, depth; 507 size_t new_bo_size; 508 509 ret = vmw_fb_compute_depth(var, &depth); 510 if (ret) 511 return ret; 512 513 mode_cmd.width = var->xres; 514 mode_cmd.height = var->yres; 515 mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width; 516 mode_cmd.pixel_format = 517 drm_mode_legacy_fb_format(var->bits_per_pixel, depth); 518 519 cur_fb = par->set_fb; 520 if (cur_fb && cur_fb->width == mode_cmd.width && 521 cur_fb->height == mode_cmd.height && 522 cur_fb->format->format == mode_cmd.pixel_format && 523 cur_fb->pitches[0] == mode_cmd.pitches[0]) 524 return 0; 525 526 /* Need new buffer object ? */ 527 new_bo_size = (size_t) mode_cmd.pitches[0] * (size_t) mode_cmd.height; 528 ret = vmw_fb_kms_detach(par, 529 par->bo_size < new_bo_size || 530 par->bo_size > 2*new_bo_size, 531 true); 532 if (ret) 533 return ret; 534 535 if (!par->vmw_bo) { 536 ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size, 537 &par->vmw_bo); 538 if (ret) { 539 DRM_ERROR("Failed creating a buffer object for " 540 "fbdev.\n"); 541 return ret; 542 } 543 par->bo_size = new_bo_size; 544 } 545 546 vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL, 547 true, &mode_cmd); 548 if (IS_ERR(vfb)) 549 return PTR_ERR(vfb); 550 551 par->set_fb = &vfb->base; 552 553 return 0; 554} 555 556static int vmw_fb_set_par(struct fb_info *info) 557{ 558 struct vmw_fb_par *par = info->par; 559 struct vmw_private *vmw_priv = par->vmw_priv; 560 struct drm_mode_set set; 561 struct fb_var_screeninfo *var = &info->var; 562 struct drm_display_mode new_mode = { DRM_MODE("fb_mode", 563 DRM_MODE_TYPE_DRIVER, 564 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 565 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) 566 }; 567 struct drm_display_mode *mode; 568 int ret; 569 570 mode = drm_mode_duplicate(vmw_priv->dev, &new_mode); 571 if (!mode) { 572 DRM_ERROR("Could not create new fb mode.\n"); 573 return -ENOMEM; 574 } 575 576 mode->hdisplay = var->xres; 577 mode->vdisplay = var->yres; 578 vmw_guess_mode_timing(mode); 579 580 if (!vmw_kms_validate_mode_vram(vmw_priv, 581 mode->hdisplay * 582 DIV_ROUND_UP(var->bits_per_pixel, 8), 583 mode->vdisplay)) { 584 drm_mode_destroy(vmw_priv->dev, mode); 585 return -EINVAL; 586 } 587 588 mutex_lock(&par->bo_mutex); 589 ret = vmw_fb_kms_framebuffer(info); 590 if (ret) 591 goto out_unlock; 592 593 par->fb_x = var->xoffset; 594 par->fb_y = var->yoffset; 595 596 set.crtc = par->crtc; 597 set.x = 0; 598 set.y = 0; 599 set.mode = mode; 600 set.fb = par->set_fb; 601 set.num_connectors = 1; 602 set.connectors = &par->con; 603 604 ret = vmwgfx_set_config_internal(&set); 605 if (ret) 606 goto out_unlock; 607 608 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, 609 par->set_fb->width, par->set_fb->height); 610 611 /* If there already was stuff dirty we wont 612 * schedule a new work, so lets do it now */ 613 614 schedule_delayed_work(&par->local_work, 0); 615 616out_unlock: 617 if (par->set_mode) 618 drm_mode_destroy(vmw_priv->dev, par->set_mode); 619 par->set_mode = mode; 620 621 mutex_unlock(&par->bo_mutex); 622 623 return ret; 624} 625 626 627static const 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 639int 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 int fb_bpp, fb_pitch, fb_size; 646 struct drm_display_mode *init_mode; 647 int ret; 648 649 fb_bpp = 32; 650 651 /* XXX As shouldn't these be as well. */ 652 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048); 653 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048); 654 655 fb_pitch = fb_width * fb_bpp / 8; 656 fb_size = fb_pitch * fb_height; 657 658 info = framebuffer_alloc(sizeof(*par), device); 659 if (!info) 660 return -ENOMEM; 661 662 /* 663 * Par 664 */ 665 vmw_priv->fb_info = info; 666 par = info->par; 667 memset(par, 0, sizeof(*par)); 668 INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush); 669 par->vmw_priv = vmw_priv; 670 par->vmalloc = NULL; 671 par->max_width = fb_width; 672 par->max_height = fb_height; 673 674 ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width, 675 par->max_height, &par->con, 676 &par->crtc, &init_mode); 677 if (ret) 678 goto err_kms; 679 680 info->var.xres = init_mode->hdisplay; 681 info->var.yres = init_mode->vdisplay; 682 683 /* 684 * Create buffers and alloc memory 685 */ 686 par->vmalloc = vzalloc(fb_size); 687 if (unlikely(par->vmalloc == NULL)) { 688 ret = -ENOMEM; 689 goto err_free; 690 } 691 692 /* 693 * Fixed and var 694 */ 695 strcpy(info->fix.id, "svgadrmfb"); 696 info->fix.type = FB_TYPE_PACKED_PIXELS; 697 info->fix.visual = FB_VISUAL_TRUECOLOR; 698 info->fix.type_aux = 0; 699 info->fix.xpanstep = 1; /* doing it in hw */ 700 info->fix.ypanstep = 1; /* doing it in hw */ 701 info->fix.ywrapstep = 0; 702 info->fix.accel = FB_ACCEL_NONE; 703 info->fix.line_length = fb_pitch; 704 705 info->fix.smem_start = 0; 706 info->fix.smem_len = fb_size; 707 708 info->pseudo_palette = par->pseudo_palette; 709 info->screen_base = (char __iomem *)par->vmalloc; 710 info->screen_size = fb_size; 711 712 info->fbops = &vmw_fb_ops; 713 714 /* 24 depth per default */ 715 info->var.red.offset = 16; 716 info->var.green.offset = 8; 717 info->var.blue.offset = 0; 718 info->var.red.length = 8; 719 info->var.green.length = 8; 720 info->var.blue.length = 8; 721 info->var.transp.offset = 0; 722 info->var.transp.length = 0; 723 724 info->var.xres_virtual = fb_width; 725 info->var.yres_virtual = fb_height; 726 info->var.bits_per_pixel = fb_bpp; 727 info->var.xoffset = 0; 728 info->var.yoffset = 0; 729 info->var.activate = FB_ACTIVATE_NOW; 730 info->var.height = -1; 731 info->var.width = -1; 732 733 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ 734 info->apertures = alloc_apertures(1); 735 if (!info->apertures) { 736 ret = -ENOMEM; 737 goto err_aper; 738 } 739 info->apertures->ranges[0].base = vmw_priv->vram_start; 740 info->apertures->ranges[0].size = vmw_priv->vram_size; 741 742 /* 743 * Dirty & Deferred IO 744 */ 745 par->dirty.x1 = par->dirty.x2 = 0; 746 par->dirty.y1 = par->dirty.y2 = 0; 747 par->dirty.active = true; 748 spin_lock_init(&par->dirty.lock); 749 mutex_init(&par->bo_mutex); 750 info->fbdefio = &vmw_defio; 751 fb_deferred_io_init(info); 752 753 ret = register_framebuffer(info); 754 if (unlikely(ret != 0)) 755 goto err_defio; 756 757 vmw_fb_set_par(info); 758 759 return 0; 760 761err_defio: 762 fb_deferred_io_cleanup(info); 763err_aper: 764err_free: 765 vfree(par->vmalloc); 766err_kms: 767 framebuffer_release(info); 768 vmw_priv->fb_info = NULL; 769 770 return ret; 771} 772 773int vmw_fb_close(struct vmw_private *vmw_priv) 774{ 775 struct fb_info *info; 776 struct vmw_fb_par *par; 777 778 if (!vmw_priv->fb_info) 779 return 0; 780 781 info = vmw_priv->fb_info; 782 par = info->par; 783 784 /* ??? order */ 785 fb_deferred_io_cleanup(info); 786 cancel_delayed_work_sync(&par->local_work); 787 unregister_framebuffer(info); 788 789 mutex_lock(&par->bo_mutex); 790 (void) vmw_fb_kms_detach(par, true, true); 791 mutex_unlock(&par->bo_mutex); 792 793 vfree(par->vmalloc); 794 framebuffer_release(info); 795 796 return 0; 797} 798 799int vmw_fb_off(struct vmw_private *vmw_priv) 800{ 801 struct fb_info *info; 802 struct vmw_fb_par *par; 803 unsigned long flags; 804 805 if (!vmw_priv->fb_info) 806 return -EINVAL; 807 808 info = vmw_priv->fb_info; 809 par = info->par; 810 811 spin_lock_irqsave(&par->dirty.lock, flags); 812 par->dirty.active = false; 813 spin_unlock_irqrestore(&par->dirty.lock, flags); 814 815 flush_delayed_work(&info->deferred_work); 816 flush_delayed_work(&par->local_work); 817 818 return 0; 819} 820 821int vmw_fb_on(struct vmw_private *vmw_priv) 822{ 823 struct fb_info *info; 824 struct vmw_fb_par *par; 825 unsigned long flags; 826 827 if (!vmw_priv->fb_info) 828 return -EINVAL; 829 830 info = vmw_priv->fb_info; 831 par = info->par; 832 833 spin_lock_irqsave(&par->dirty.lock, flags); 834 par->dirty.active = true; 835 spin_unlock_irqrestore(&par->dirty.lock, flags); 836 837 /* 838 * Need to reschedule a dirty update, because otherwise that's 839 * only done in dirty_mark() if the previous coalesced 840 * dirty region was empty. 841 */ 842 schedule_delayed_work(&par->local_work, 0); 843 844 return 0; 845} 846