nouveau_fbcon.c revision 1.3
1 /* $NetBSD: nouveau_fbcon.c,v 1.3 2018/08/27 04:58:24 riastradh Exp $ */ 2 3 /* 4 * Copyright 2007 David Airlie 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 23 * DEALINGS IN THE SOFTWARE. 24 * 25 * Authors: 26 * David Airlie 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: nouveau_fbcon.c,v 1.3 2018/08/27 04:58:24 riastradh Exp $"); 31 32 #include <linux/module.h> 33 #include <linux/kernel.h> 34 #include <linux/errno.h> 35 #include <linux/string.h> 36 #include <linux/mm.h> 37 #include <linux/tty.h> 38 #include <linux/sysrq.h> 39 #include <linux/delay.h> 40 #include <linux/fb.h> 41 #include <linux/init.h> 42 #include <linux/screen_info.h> 43 #include <linux/vga_switcheroo.h> 44 #include <linux/console.h> 45 46 #include <drm/drmP.h> 47 #include <drm/drm_crtc.h> 48 #include <drm/drm_crtc_helper.h> 49 #include <drm/drm_fb_helper.h> 50 51 #include "nouveau_drm.h" 52 #include "nouveau_gem.h" 53 #include "nouveau_bo.h" 54 #include "nouveau_fbcon.h" 55 #include "nouveau_chan.h" 56 57 #include "nouveau_crtc.h" 58 59 #ifdef __NetBSD__ 60 #include "nouveaufb.h" 61 #endif 62 63 #ifdef __NetBSD__ /* XXX nouveau fbaccel */ 64 static const int nouveau_nofbaccel = 1; 65 #else 66 MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration"); 67 int nouveau_nofbaccel = 0; 68 module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400); 69 70 static void 71 nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect) 72 { 73 struct nouveau_fbdev *fbcon = info->par; 74 struct nouveau_drm *drm = nouveau_drm(fbcon->dev); 75 struct nvif_device *device = &drm->device; 76 int ret; 77 78 if (info->state != FBINFO_STATE_RUNNING) 79 return; 80 81 ret = -ENODEV; 82 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) && 83 mutex_trylock(&drm->client.mutex)) { 84 if (device->info.family < NV_DEVICE_INFO_V0_TESLA) 85 ret = nv04_fbcon_fillrect(info, rect); 86 else 87 if (device->info.family < NV_DEVICE_INFO_V0_FERMI) 88 ret = nv50_fbcon_fillrect(info, rect); 89 else 90 ret = nvc0_fbcon_fillrect(info, rect); 91 mutex_unlock(&drm->client.mutex); 92 } 93 94 if (ret == 0) 95 return; 96 97 if (ret != -ENODEV) 98 nouveau_fbcon_gpu_lockup(info); 99 drm_fb_helper_cfb_fillrect(info, rect); 100 } 101 102 static void 103 nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image) 104 { 105 struct nouveau_fbdev *fbcon = info->par; 106 struct nouveau_drm *drm = nouveau_drm(fbcon->dev); 107 struct nvif_device *device = &drm->device; 108 int ret; 109 110 if (info->state != FBINFO_STATE_RUNNING) 111 return; 112 113 ret = -ENODEV; 114 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) && 115 mutex_trylock(&drm->client.mutex)) { 116 if (device->info.family < NV_DEVICE_INFO_V0_TESLA) 117 ret = nv04_fbcon_copyarea(info, image); 118 else 119 if (device->info.family < NV_DEVICE_INFO_V0_FERMI) 120 ret = nv50_fbcon_copyarea(info, image); 121 else 122 ret = nvc0_fbcon_copyarea(info, image); 123 mutex_unlock(&drm->client.mutex); 124 } 125 126 if (ret == 0) 127 return; 128 129 if (ret != -ENODEV) 130 nouveau_fbcon_gpu_lockup(info); 131 drm_fb_helper_cfb_copyarea(info, image); 132 } 133 134 static void 135 nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image) 136 { 137 struct nouveau_fbdev *fbcon = info->par; 138 struct nouveau_drm *drm = nouveau_drm(fbcon->dev); 139 struct nvif_device *device = &drm->device; 140 int ret; 141 142 if (info->state != FBINFO_STATE_RUNNING) 143 return; 144 145 ret = -ENODEV; 146 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) && 147 mutex_trylock(&drm->client.mutex)) { 148 if (device->info.family < NV_DEVICE_INFO_V0_TESLA) 149 ret = nv04_fbcon_imageblit(info, image); 150 else 151 if (device->info.family < NV_DEVICE_INFO_V0_FERMI) 152 ret = nv50_fbcon_imageblit(info, image); 153 else 154 ret = nvc0_fbcon_imageblit(info, image); 155 mutex_unlock(&drm->client.mutex); 156 } 157 158 if (ret == 0) 159 return; 160 161 if (ret != -ENODEV) 162 nouveau_fbcon_gpu_lockup(info); 163 drm_fb_helper_cfb_imageblit(info, image); 164 } 165 166 static int 167 nouveau_fbcon_sync(struct fb_info *info) 168 { 169 struct nouveau_fbdev *fbcon = info->par; 170 struct nouveau_drm *drm = nouveau_drm(fbcon->dev); 171 struct nouveau_channel *chan = drm->channel; 172 int ret; 173 174 if (!chan || !chan->accel_done || in_interrupt() || 175 info->state != FBINFO_STATE_RUNNING || 176 info->flags & FBINFO_HWACCEL_DISABLED) 177 return 0; 178 179 if (!mutex_trylock(&drm->client.mutex)) 180 return 0; 181 182 ret = nouveau_channel_idle(chan); 183 mutex_unlock(&drm->client.mutex); 184 if (ret) { 185 nouveau_fbcon_gpu_lockup(info); 186 return 0; 187 } 188 189 chan->accel_done = false; 190 return 0; 191 } 192 193 static int 194 nouveau_fbcon_open(struct fb_info *info, int user) 195 { 196 struct nouveau_fbdev *fbcon = info->par; 197 struct nouveau_drm *drm = nouveau_drm(fbcon->dev); 198 int ret = pm_runtime_get_sync(drm->dev->dev); 199 if (ret < 0 && ret != -EACCES) 200 return ret; 201 return 0; 202 } 203 204 static int 205 nouveau_fbcon_release(struct fb_info *info, int user) 206 { 207 struct nouveau_fbdev *fbcon = info->par; 208 struct nouveau_drm *drm = nouveau_drm(fbcon->dev); 209 pm_runtime_put(drm->dev->dev); 210 return 0; 211 } 212 213 static struct fb_ops nouveau_fbcon_ops = { 214 .owner = THIS_MODULE, 215 .fb_open = nouveau_fbcon_open, 216 .fb_release = nouveau_fbcon_release, 217 .fb_check_var = drm_fb_helper_check_var, 218 .fb_set_par = drm_fb_helper_set_par, 219 .fb_fillrect = nouveau_fbcon_fillrect, 220 .fb_copyarea = nouveau_fbcon_copyarea, 221 .fb_imageblit = nouveau_fbcon_imageblit, 222 .fb_sync = nouveau_fbcon_sync, 223 .fb_pan_display = drm_fb_helper_pan_display, 224 .fb_blank = drm_fb_helper_blank, 225 .fb_setcmap = drm_fb_helper_setcmap, 226 .fb_debug_enter = drm_fb_helper_debug_enter, 227 .fb_debug_leave = drm_fb_helper_debug_leave, 228 }; 229 230 static struct fb_ops nouveau_fbcon_sw_ops = { 231 .owner = THIS_MODULE, 232 .fb_open = nouveau_fbcon_open, 233 .fb_release = nouveau_fbcon_release, 234 .fb_check_var = drm_fb_helper_check_var, 235 .fb_set_par = drm_fb_helper_set_par, 236 .fb_fillrect = drm_fb_helper_cfb_fillrect, 237 .fb_copyarea = drm_fb_helper_cfb_copyarea, 238 .fb_imageblit = drm_fb_helper_cfb_imageblit, 239 .fb_pan_display = drm_fb_helper_pan_display, 240 .fb_blank = drm_fb_helper_blank, 241 .fb_setcmap = drm_fb_helper_setcmap, 242 .fb_debug_enter = drm_fb_helper_debug_enter, 243 .fb_debug_leave = drm_fb_helper_debug_leave, 244 }; 245 #endif /* XXX nouveau fbaccel */ 246 247 void 248 nouveau_fbcon_accel_save_disable(struct drm_device *dev) 249 { 250 struct nouveau_drm *drm = nouveau_drm(dev); 251 if (drm->fbcon) { 252 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags; 253 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED; 254 } 255 } 256 257 void 258 nouveau_fbcon_accel_restore(struct drm_device *dev) 259 { 260 struct nouveau_drm *drm = nouveau_drm(dev); 261 if (drm->fbcon) { 262 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags; 263 } 264 } 265 266 static void 267 nouveau_fbcon_accel_fini(struct drm_device *dev) 268 { 269 struct nouveau_drm *drm = nouveau_drm(dev); 270 struct nouveau_fbdev *fbcon = drm->fbcon; 271 if (fbcon && drm->channel) { 272 console_lock(); 273 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED; 274 console_unlock(); 275 nouveau_channel_idle(drm->channel); 276 nvif_object_fini(&fbcon->twod); 277 nvif_object_fini(&fbcon->blit); 278 nvif_object_fini(&fbcon->gdi); 279 nvif_object_fini(&fbcon->patt); 280 nvif_object_fini(&fbcon->rop); 281 nvif_object_fini(&fbcon->clip); 282 nvif_object_fini(&fbcon->surf2d); 283 } 284 } 285 286 static void 287 nouveau_fbcon_accel_init(struct drm_device *dev) 288 { 289 struct nouveau_drm *drm = nouveau_drm(dev); 290 struct nouveau_fbdev *fbcon = drm->fbcon; 291 struct fb_info *info = fbcon->helper.fbdev; 292 int ret; 293 294 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) 295 ret = nv04_fbcon_accel_init(info); 296 else 297 if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI) 298 ret = nv50_fbcon_accel_init(info); 299 else 300 ret = nvc0_fbcon_accel_init(info); 301 302 if (ret == 0) 303 info->fbops = &nouveau_fbcon_ops; 304 } 305 306 static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, 307 u16 blue, int regno) 308 { 309 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc); 310 311 nv_crtc->lut.r[regno] = red; 312 nv_crtc->lut.g[regno] = green; 313 nv_crtc->lut.b[regno] = blue; 314 } 315 316 static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, 317 u16 *blue, int regno) 318 { 319 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc); 320 321 *red = nv_crtc->lut.r[regno]; 322 *green = nv_crtc->lut.g[regno]; 323 *blue = nv_crtc->lut.b[regno]; 324 } 325 326 static void 327 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon) 328 { 329 #ifdef __NetBSD__ /* XXX nouveau fbaccel */ 330 struct nouveau_bo *const nvbo = fbcon->nouveau_fb.nvbo; 331 332 (void)memset(__UNVOLATILE(nvbo_kmap_obj_iovirtual(nvbo)), 0, 333 nvbo->bo.num_pages << PAGE_SHIFT); 334 #else 335 struct fb_info *info = fbcon->helper.fbdev; 336 struct fb_fillrect rect; 337 338 /* Clear the entire fbcon. The drm will program every connector 339 * with it's preferred mode. If the sizes differ, one display will 340 * quite likely have garbage around the console. 341 */ 342 rect.dx = rect.dy = 0; 343 rect.width = info->var.xres_virtual; 344 rect.height = info->var.yres_virtual; 345 rect.color = 0; 346 rect.rop = ROP_COPY; 347 info->fbops->fb_fillrect(info, &rect); 348 #endif 349 } 350 351 static int 352 nouveau_fbcon_create(struct drm_fb_helper *helper, 353 struct drm_fb_helper_surface_size *sizes) 354 { 355 struct nouveau_fbdev *fbcon = 356 container_of(helper, struct nouveau_fbdev, helper); 357 struct drm_device *dev = fbcon->dev; 358 struct nouveau_drm *drm = nouveau_drm(dev); 359 struct nvif_device *device = &drm->device; 360 #ifndef __NetBSD__ 361 struct fb_info *info; 362 #endif 363 struct drm_framebuffer *fb; 364 struct nouveau_framebuffer *nouveau_fb; 365 struct nouveau_channel *chan; 366 struct nouveau_bo *nvbo; 367 struct drm_mode_fb_cmd2 mode_cmd; 368 int size, ret; 369 370 mode_cmd.width = sizes->surface_width; 371 mode_cmd.height = sizes->surface_height; 372 373 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3); 374 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256); 375 376 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, 377 sizes->surface_depth); 378 379 size = mode_cmd.pitches[0] * mode_cmd.height; 380 size = roundup(size, PAGE_SIZE); 381 382 ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM, 383 0, 0x0000, &nvbo); 384 if (ret) { 385 NV_ERROR(drm, "failed to allocate framebuffer\n"); 386 goto out; 387 } 388 389 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false); 390 if (ret) { 391 NV_ERROR(drm, "failed to pin fb: %d\n", ret); 392 goto out_unref; 393 } 394 395 ret = nouveau_bo_map(nvbo); 396 if (ret) { 397 NV_ERROR(drm, "failed to map fb: %d\n", ret); 398 goto out_unpin; 399 } 400 401 chan = nouveau_nofbaccel ? NULL : drm->channel; 402 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) { 403 ret = nouveau_bo_vma_add(nvbo, drm->client.vm, 404 &fbcon->nouveau_fb.vma); 405 if (ret) { 406 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret); 407 chan = NULL; 408 } 409 } 410 411 #ifdef __NetBSD__ 412 nouveau_framebuffer_init(dev, &fbcon->nouveau_fb, &mode_cmd, nvbo); 413 nouveau_fb = &fbcon->nouveau_fb; 414 fb = &nouveau_fb->base; 415 416 nouveau_fbcon_zfill(dev, fbcon); 417 418 { 419 static const struct nouveaufb_attach_args zero_nfa; 420 struct nouveaufb_attach_args nfa = zero_nfa; 421 422 nfa.nfa_fb_helper = helper; 423 nfa.nfa_fb_sizes = *sizes; 424 nfa.nfa_fb_ptr = nvbo_kmap_obj_iovirtual(nvbo); 425 nfa.nfa_fb_linebytes = mode_cmd.pitches[0]; 426 427 helper->fbdev = config_found_ia(dev->dev, "nouveaufbbus", &nfa, NULL); 428 if (helper->fbdev == NULL) { 429 DRM_ERROR("failed to attach nouveaufb\n"); 430 goto out_unlock; 431 } 432 } 433 helper->fb = fb; 434 435 return 0; 436 #else 437 mutex_lock(&dev->struct_mutex); 438 439 info = drm_fb_helper_alloc_fbi(helper); 440 if (IS_ERR(info)) { 441 ret = PTR_ERR(info); 442 goto out_unlock; 443 } 444 info->skip_vt_switch = 1; 445 446 info->par = fbcon; 447 448 nouveau_framebuffer_init(dev, &fbcon->nouveau_fb, &mode_cmd, nvbo); 449 450 nouveau_fb = &fbcon->nouveau_fb; 451 fb = &nouveau_fb->base; 452 453 /* setup helper */ 454 fbcon->helper.fb = fb; 455 456 strcpy(info->fix.id, "nouveaufb"); 457 if (!chan) 458 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED; 459 else 460 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA | 461 FBINFO_HWACCEL_FILLRECT | 462 FBINFO_HWACCEL_IMAGEBLIT; 463 info->flags |= FBINFO_CAN_FORCE_OUTPUT; 464 info->fbops = &nouveau_fbcon_sw_ops; 465 info->fix.smem_start = nvbo->bo.mem.bus.base + 466 nvbo->bo.mem.bus.offset; 467 info->fix.smem_len = size; 468 469 info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo); 470 info->screen_size = size; 471 472 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); 473 drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height); 474 475 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ 476 477 mutex_unlock(&dev->struct_mutex); 478 479 if (chan) 480 nouveau_fbcon_accel_init(dev); 481 nouveau_fbcon_zfill(dev, fbcon); 482 483 /* To allow resizeing without swapping buffers */ 484 NV_INFO(drm, "allocated %dx%d fb: 0x%jx, bo %p\n", 485 nouveau_fb->base.width, nouveau_fb->base.height, 486 (uintmax_t)nvbo->bo.offset, nvbo); 487 488 vga_switcheroo_client_fb_set(dev->pdev, info); 489 return 0; 490 #endif /* defined(__NetBSD__) */ 491 492 out_unlock: 493 #ifndef __NetBSD__ 494 mutex_unlock(&dev->struct_mutex); 495 #endif 496 if (chan) 497 nouveau_bo_vma_del(nvbo, &fbcon->nouveau_fb.vma); 498 nouveau_bo_unmap(nvbo); 499 out_unpin: 500 nouveau_bo_unpin(nvbo); 501 out_unref: 502 nouveau_bo_ref(NULL, &nvbo); 503 out: 504 return ret; 505 } 506 507 void 508 nouveau_fbcon_output_poll_changed(struct drm_device *dev) 509 { 510 struct nouveau_drm *drm = nouveau_drm(dev); 511 if (drm->fbcon) 512 drm_fb_helper_hotplug_event(&drm->fbcon->helper); 513 } 514 515 static int 516 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon) 517 { 518 struct nouveau_framebuffer *nouveau_fb = &fbcon->nouveau_fb; 519 520 #ifdef __NetBSD__ 521 if (fbcon->helper.fbdev) { 522 int ret; 523 524 /* XXX errno NetBSD->Linux */ 525 ret = -config_detach(fbcon->helper.fbdev, DETACH_FORCE); 526 if (ret) 527 DRM_ERROR("failed to detach nouveaufb: %d\n", ret); 528 fbcon->helper.fbdev = NULL; 529 } 530 #else 531 drm_fb_helper_unregister_fbi(&fbcon->helper); 532 drm_fb_helper_release_fbi(&fbcon->helper); 533 #endif 534 535 if (nouveau_fb->nvbo) { 536 nouveau_bo_unmap(nouveau_fb->nvbo); 537 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma); 538 nouveau_bo_unpin(nouveau_fb->nvbo); 539 drm_gem_object_unreference_unlocked(&nouveau_fb->nvbo->gem); 540 nouveau_fb->nvbo = NULL; 541 } 542 drm_fb_helper_fini(&fbcon->helper); 543 drm_framebuffer_unregister_private(&nouveau_fb->base); 544 drm_framebuffer_cleanup(&nouveau_fb->base); 545 return 0; 546 } 547 548 #ifndef __NetBSD__ /* XXX nouveau fbaccel */ 549 void nouveau_fbcon_gpu_lockup(struct fb_info *info) 550 { 551 struct nouveau_fbdev *fbcon = info->par; 552 struct nouveau_drm *drm = nouveau_drm(fbcon->dev); 553 554 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n"); 555 info->flags |= FBINFO_HWACCEL_DISABLED; 556 } 557 #endif 558 559 static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = { 560 .gamma_set = nouveau_fbcon_gamma_set, 561 .gamma_get = nouveau_fbcon_gamma_get, 562 .fb_probe = nouveau_fbcon_create, 563 }; 564 565 void 566 nouveau_fbcon_set_suspend(struct drm_device *dev, int state) 567 { 568 struct nouveau_drm *drm = nouveau_drm(dev); 569 if (drm->fbcon) { 570 console_lock(); 571 if (state == FBINFO_STATE_RUNNING) 572 nouveau_fbcon_accel_restore(dev); 573 drm_fb_helper_set_suspend(&drm->fbcon->helper, state); 574 if (state != FBINFO_STATE_RUNNING) 575 nouveau_fbcon_accel_save_disable(dev); 576 console_unlock(); 577 } 578 } 579 580 int 581 nouveau_fbcon_init(struct drm_device *dev) 582 { 583 struct nouveau_drm *drm = nouveau_drm(dev); 584 struct nouveau_fbdev *fbcon; 585 int preferred_bpp; 586 int ret; 587 588 if (!dev->mode_config.num_crtc || 589 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA) 590 return 0; 591 592 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL); 593 if (!fbcon) 594 return -ENOMEM; 595 596 fbcon->dev = dev; 597 drm->fbcon = fbcon; 598 599 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs); 600 601 ret = drm_fb_helper_init(dev, &fbcon->helper, 602 dev->mode_config.num_crtc, 4); 603 if (ret) 604 goto free; 605 606 ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper); 607 if (ret) 608 goto fini; 609 610 if (drm->device.info.ram_size <= 32 * 1024 * 1024) 611 preferred_bpp = 8; 612 else 613 if (drm->device.info.ram_size <= 64 * 1024 * 1024) 614 preferred_bpp = 16; 615 else 616 preferred_bpp = 32; 617 618 /* disable all the possible outputs/crtcs before entering KMS mode */ 619 drm_helper_disable_unused_functions(dev); 620 621 ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp); 622 if (ret) 623 goto fini; 624 625 if (fbcon->helper.fbdev) 626 fbcon->helper.fbdev->pixmap.buf_align = 4; 627 return 0; 628 629 fini: 630 drm_fb_helper_fini(&fbcon->helper); 631 free: 632 kfree(fbcon); 633 return ret; 634 } 635 636 void 637 nouveau_fbcon_fini(struct drm_device *dev) 638 { 639 struct nouveau_drm *drm = nouveau_drm(dev); 640 641 if (!drm->fbcon) 642 return; 643 644 nouveau_fbcon_accel_fini(dev); 645 nouveau_fbcon_destroy(dev, drm->fbcon); 646 kfree(drm->fbcon); 647 drm->fbcon = NULL; 648 } 649
Indexes created Mon Oct 20 10:10:01 GMT 2025