1 /************************************************************************** 2 * Copyright (c) 2007-2011, Intel Corporation. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms and conditions of the GNU General Public License, 7 * version 2, as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program; if not, write to the Free Software Foundation, Inc., 16 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 **************************************************************************/ 19 20 #include <linux/module.h> 21 #include <linux/kernel.h> 22 #include <linux/errno.h> 23 #include <linux/string.h> 24 #include <linux/mm.h> 25 #include <linux/tty.h> 26 #include <linux/slab.h> 27 #include <linux/delay.h> 28 #include <linux/fb.h> 29 #include <linux/init.h> 30 #include <linux/console.h> 31 32 #include <drm/drmP.h> 33 #include <drm/drm.h> 34 #include <drm/drm_crtc.h> 35 #include <drm/drm_fb_helper.h> 36 37 #include "psb_drv.h" 38 #include "psb_intel_reg.h" 39 #include "psb_intel_drv.h" 40 #include "framebuffer.h" 41 #include "gtt.h" 42 43 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb); 44 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb, 45 struct drm_file *file_priv, 46 unsigned int *handle); 47 48 static const struct drm_framebuffer_funcs psb_fb_funcs = { 49 .destroy = psb_user_framebuffer_destroy, 50 .create_handle = psb_user_framebuffer_create_handle, 51 }; 52 53 #define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16) 54 55 static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green, 56 unsigned blue, unsigned transp, 57 struct fb_info *info) 58 { 59 struct psb_fbdev *fbdev = info->par; 60 struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb; 61 uint32_t v; 62 63 if (!fb) 64 return -ENOMEM; 65 66 if (regno > 255) 67 return 1; 68 69 red = CMAP_TOHW(red, info->var.red.length); 70 blue = CMAP_TOHW(blue, info->var.blue.length); 71 green = CMAP_TOHW(green, info->var.green.length); 72 transp = CMAP_TOHW(transp, info->var.transp.length); 73 74 v = (red << info->var.red.offset) | 75 (green << info->var.green.offset) | 76 (blue << info->var.blue.offset) | 77 (transp << info->var.transp.offset); 78 79 if (regno < 16) { 80 switch (fb->bits_per_pixel) { 81 case 16: 82 ((uint32_t *) info->pseudo_palette)[regno] = v; 83 break; 84 case 24: 85 case 32: 86 ((uint32_t *) info->pseudo_palette)[regno] = v; 87 break; 88 } 89 } 90 91 return 0; 92 } 93 94 static int psbfb_pan(struct fb_var_screeninfo *var, struct fb_info *info) 95 { 96 struct psb_fbdev *fbdev = info->par; 97 struct psb_framebuffer *psbfb = &fbdev->pfb; 98 struct drm_device *dev = psbfb->base.dev; 99 100 /* 101 * We have to poke our nose in here. The core fb code assumes 102 * panning is part of the hardware that can be invoked before 103 * the actual fb is mapped. In our case that isn't quite true. 104 */ 105 if (psbfb->gtt->npage) { 106 /* GTT roll shifts in 4K pages, we need to shift the right 107 number of pages */ 108 int pages = info->fix.line_length >> 12; 109 psb_gtt_roll(dev, psbfb->gtt, var->yoffset * pages); 110 } 111 return 0; 112 } 113 114 static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) 115 { 116 struct psb_framebuffer *psbfb = vma->vm_private_data; 117 struct drm_device *dev = psbfb->base.dev; 118 struct drm_psb_private *dev_priv = dev->dev_private; 119 int page_num; 120 int i; 121 unsigned long address; 122 int ret; 123 unsigned long pfn; 124 /* FIXME: assumes fb at stolen base which may not be true */ 125 unsigned long phys_addr = (unsigned long)dev_priv->stolen_base; 126 127 page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; 128 address = (unsigned long)vmf->virtual_address - (vmf->pgoff << PAGE_SHIFT); 129 130 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 131 132 for (i = 0; i < page_num; i++) { 133 pfn = (phys_addr >> PAGE_SHIFT); 134 135 ret = vm_insert_mixed(vma, address, pfn); 136 if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0))) 137 break; 138 else if (unlikely(ret != 0)) { 139 ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS; 140 return ret; 141 } 142 address += PAGE_SIZE; 143 phys_addr += PAGE_SIZE; 144 } 145 return VM_FAULT_NOPAGE; 146 } 147 148 static void psbfb_vm_open(struct vm_area_struct *vma) 149 { 150 } 151 152 static void psbfb_vm_close(struct vm_area_struct *vma) 153 { 154 } 155 156 static const struct vm_operations_struct psbfb_vm_ops = { 157 .fault = psbfb_vm_fault, 158 .open = psbfb_vm_open, 159 .close = psbfb_vm_close 160 }; 161 162 static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma) 163 { 164 struct psb_fbdev *fbdev = info->par; 165 struct psb_framebuffer *psbfb = &fbdev->pfb; 166 167 if (vma->vm_pgoff != 0) 168 return -EINVAL; 169 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) 170 return -EINVAL; 171 172 if (!psbfb->addr_space) 173 psbfb->addr_space = vma->vm_file->f_mapping; 174 /* 175 * If this is a GEM object then info->screen_base is the virtual 176 * kernel remapping of the object. FIXME: Review if this is 177 * suitable for our mmap work 178 */ 179 vma->vm_ops = &psbfb_vm_ops; 180 vma->vm_private_data = (void *)psbfb; 181 vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP; 182 return 0; 183 } 184 185 static int psbfb_ioctl(struct fb_info *info, unsigned int cmd, 186 unsigned long arg) 187 { 188 return -ENOTTY; 189 } 190 191 static struct fb_ops psbfb_ops = { 192 .owner = THIS_MODULE, 193 .fb_check_var = drm_fb_helper_check_var, 194 .fb_set_par = drm_fb_helper_set_par, 195 .fb_blank = drm_fb_helper_blank, 196 .fb_setcolreg = psbfb_setcolreg, 197 .fb_fillrect = cfb_fillrect, 198 .fb_copyarea = psbfb_copyarea, 199 .fb_imageblit = cfb_imageblit, 200 .fb_mmap = psbfb_mmap, 201 .fb_sync = psbfb_sync, 202 .fb_ioctl = psbfb_ioctl, 203 }; 204 205 static struct fb_ops psbfb_roll_ops = { 206 .owner = THIS_MODULE, 207 .fb_check_var = drm_fb_helper_check_var, 208 .fb_set_par = drm_fb_helper_set_par, 209 .fb_blank = drm_fb_helper_blank, 210 .fb_setcolreg = psbfb_setcolreg, 211 .fb_fillrect = cfb_fillrect, 212 .fb_copyarea = cfb_copyarea, 213 .fb_imageblit = cfb_imageblit, 214 .fb_pan_display = psbfb_pan, 215 .fb_mmap = psbfb_mmap, 216 .fb_ioctl = psbfb_ioctl, 217 }; 218 219 static struct fb_ops psbfb_unaccel_ops = { 220 .owner = THIS_MODULE, 221 .fb_check_var = drm_fb_helper_check_var, 222 .fb_set_par = drm_fb_helper_set_par, 223 .fb_blank = drm_fb_helper_blank, 224 .fb_setcolreg = psbfb_setcolreg, 225 .fb_fillrect = cfb_fillrect, 226 .fb_copyarea = cfb_copyarea, 227 .fb_imageblit = cfb_imageblit, 228 .fb_mmap = psbfb_mmap, 229 .fb_ioctl = psbfb_ioctl, 230 }; 231 232 /** 233 * psb_framebuffer_init - initialize a framebuffer 234 * @dev: our DRM device 235 * @fb: framebuffer to set up 236 * @mode_cmd: mode description 237 * @gt: backing object 238 * 239 * Configure and fill in the boilerplate for our frame buffer. Return 240 * 0 on success or an error code if we fail. 241 */ 242 static int psb_framebuffer_init(struct drm_device *dev, 243 struct psb_framebuffer *fb, 244 struct drm_mode_fb_cmd2 *mode_cmd, 245 struct gtt_range *gt) 246 { 247 u32 bpp, depth; 248 int ret; 249 250 drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); 251 252 if (mode_cmd->pitches[0] & 63) 253 return -EINVAL; 254 switch (bpp) { 255 case 8: 256 case 16: 257 case 24: 258 case 32: 259 break; 260 default: 261 return -EINVAL; 262 } 263 ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs); 264 if (ret) { 265 dev_err(dev->dev, "framebuffer init failed: %d\n", ret); 266 return ret; 267 } 268 drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd); 269 fb->gtt = gt; 270 return 0; 271 } 272 273 /** 274 * psb_framebuffer_create - create a framebuffer backed by gt 275 * @dev: our DRM device 276 * @mode_cmd: the description of the requested mode 277 * @gt: the backing object 278 * 279 * Create a framebuffer object backed by the gt, and fill in the 280 * boilerplate required 281 * 282 * TODO: review object references 283 */ 284 285 static struct drm_framebuffer *psb_framebuffer_create 286 (struct drm_device *dev, 287 struct drm_mode_fb_cmd2 *mode_cmd, 288 struct gtt_range *gt) 289 { 290 struct psb_framebuffer *fb; 291 int ret; 292 293 fb = kzalloc(sizeof(*fb), GFP_KERNEL); 294 if (!fb) 295 return ERR_PTR(-ENOMEM); 296 297 ret = psb_framebuffer_init(dev, fb, mode_cmd, gt); 298 if (ret) { 299 kfree(fb); 300 return ERR_PTR(ret); 301 } 302 return &fb->base; 303 } 304 305 /** 306 * psbfb_alloc - allocate frame buffer memory 307 * @dev: the DRM device 308 * @aligned_size: space needed 309 * @force: fall back to GEM buffers if need be 310 * 311 * Allocate the frame buffer. In the usual case we get a GTT range that 312 * is stolen memory backed and life is simple. If there isn't sufficient 313 * we fail as we don't have the virtual mapping space to really vmap it 314 * and the kernel console code can't handle non linear framebuffers. 315 * 316 * Re-address this as and if the framebuffer layer grows this ability. 317 */ 318 static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size) 319 { 320 struct gtt_range *backing; 321 /* Begin by trying to use stolen memory backing */ 322 backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1); 323 if (backing) { 324 if (drm_gem_private_object_init(dev, 325 &backing->gem, aligned_size) == 0) 326 return backing; 327 psb_gtt_free_range(dev, backing); 328 } 329 return NULL; 330 } 331 332 /** 333 * psbfb_create - create a framebuffer 334 * @fbdev: the framebuffer device 335 * @sizes: specification of the layout 336 * 337 * Create a framebuffer to the specifications provided 338 */ 339 static int psbfb_create(struct psb_fbdev *fbdev, 340 struct drm_fb_helper_surface_size *sizes) 341 { 342 struct drm_device *dev = fbdev->psb_fb_helper.dev; 343 struct drm_psb_private *dev_priv = dev->dev_private; 344 struct fb_info *info; 345 struct drm_framebuffer *fb; 346 struct psb_framebuffer *psbfb = &fbdev->pfb; 347 struct drm_mode_fb_cmd2 mode_cmd; 348 struct device *device = &dev->pdev->dev; 349 int size; 350 int ret; 351 struct gtt_range *backing; 352 u32 bpp, depth; 353 int gtt_roll = 0; 354 int pitch_lines = 0; 355 356 mode_cmd.width = sizes->surface_width; 357 mode_cmd.height = sizes->surface_height; 358 bpp = sizes->surface_bpp; 359 depth = sizes->surface_depth; 360 361 /* No 24bit packed */ 362 if (bpp == 24) 363 bpp = 32; 364 365 do { 366 /* 367 * Acceleration via the GTT requires pitch to be 368 * power of two aligned. Preferably page but less 369 * is ok with some fonts 370 */ 371 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 4096 >> pitch_lines); 372 373 size = mode_cmd.pitches[0] * mode_cmd.height; 374 size = ALIGN(size, PAGE_SIZE); 375 376 /* Allocate the fb in the GTT with stolen page backing */ 377 backing = psbfb_alloc(dev, size); 378 379 if (pitch_lines) 380 pitch_lines *= 2; 381 else 382 pitch_lines = 1; 383 gtt_roll++; 384 } while (backing == NULL && pitch_lines <= 16); 385 386 /* The final pitch we accepted if we succeeded */ 387 pitch_lines /= 2; 388 389 if (backing == NULL) { 390 /* 391 * We couldn't get the space we wanted, fall back to the 392 * display engine requirement instead. The HW requires 393 * the pitch to be 64 byte aligned 394 */ 395 396 gtt_roll = 0; /* Don't use GTT accelerated scrolling */ 397 pitch_lines = 64; 398 399 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 64); 400 401 size = mode_cmd.pitches[0] * mode_cmd.height; 402 size = ALIGN(size, PAGE_SIZE); 403 404 /* Allocate the framebuffer in the GTT with stolen page backing */ 405 backing = psbfb_alloc(dev, size); 406 if (backing == NULL) 407 return -ENOMEM; 408 } 409 410 memset(dev_priv->vram_addr + backing->offset, 0, size); 411 412 mutex_lock(&dev->struct_mutex); 413 414 info = framebuffer_alloc(0, device); 415 if (!info) { 416 ret = -ENOMEM; 417 goto out_err1; 418 } 419 info->par = fbdev; 420 421 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth); 422 423 ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing); 424 if (ret) 425 goto out_unref; 426 427 fb = &psbfb->base; 428 psbfb->fbdev = info; 429 430 fbdev->psb_fb_helper.fb = fb; 431 fbdev->psb_fb_helper.fbdev = info; 432 433 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); 434 strcpy(info->fix.id, "psbfb"); 435 436 info->flags = FBINFO_DEFAULT; 437 if (dev_priv->ops->accel_2d && pitch_lines > 8) /* 2D engine */ 438 info->fbops = &psbfb_ops; 439 else if (gtt_roll) { /* GTT rolling seems best */ 440 info->fbops = &psbfb_roll_ops; 441 info->flags |= FBINFO_HWACCEL_YPAN; 442 } else /* Software */ 443 info->fbops = &psbfb_unaccel_ops; 444 445 ret = fb_alloc_cmap(&info->cmap, 256, 0); 446 if (ret) { 447 ret = -ENOMEM; 448 goto out_unref; 449 } 450 451 info->fix.smem_start = dev->mode_config.fb_base; 452 info->fix.smem_len = size; 453 info->fix.ywrapstep = gtt_roll; 454 info->fix.ypanstep = 0; 455 456 /* Accessed stolen memory directly */ 457 info->screen_base = dev_priv->vram_addr + backing->offset; 458 info->screen_size = size; 459 460 if (dev_priv->gtt.stolen_size) { 461 info->apertures = alloc_apertures(1); 462 if (!info->apertures) { 463 ret = -ENOMEM; 464 goto out_unref; 465 } 466 info->apertures->ranges[0].base = dev->mode_config.fb_base; 467 info->apertures->ranges[0].size = dev_priv->gtt.stolen_size; 468 } 469 470 drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper, 471 sizes->fb_width, sizes->fb_height); 472 473 info->fix.mmio_start = pci_resource_start(dev->pdev, 0); 474 info->fix.mmio_len = pci_resource_len(dev->pdev, 0); 475 476 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ 477 478 dev_dbg(dev->dev, "allocated %dx%d fb\n", 479 psbfb->base.width, psbfb->base.height); 480 481 mutex_unlock(&dev->struct_mutex); 482 return 0; 483 out_unref: 484 if (backing->stolen) 485 psb_gtt_free_range(dev, backing); 486 else 487 drm_gem_object_unreference(&backing->gem); 488 out_err1: 489 mutex_unlock(&dev->struct_mutex); 490 psb_gtt_free_range(dev, backing); 491 return ret; 492 } 493 494 /** 495 * psb_user_framebuffer_create - create framebuffer 496 * @dev: our DRM device 497 * @filp: client file 498 * @cmd: mode request 499 * 500 * Create a new framebuffer backed by a userspace GEM object 501 */ 502 static struct drm_framebuffer *psb_user_framebuffer_create 503 (struct drm_device *dev, struct drm_file *filp, 504 struct drm_mode_fb_cmd2 *cmd) 505 { 506 struct gtt_range *r; 507 struct drm_gem_object *obj; 508 509 /* 510 * Find the GEM object and thus the gtt range object that is 511 * to back this space 512 */ 513 obj = drm_gem_object_lookup(dev, filp, cmd->handles[0]); 514 if (obj == NULL) 515 return ERR_PTR(-ENOENT); 516 517 /* Let the core code do all the work */ 518 r = container_of(obj, struct gtt_range, gem); 519 return psb_framebuffer_create(dev, cmd, r); 520 } 521 522 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, 523 u16 blue, int regno) 524 { 525 struct psb_intel_crtc *intel_crtc = to_psb_intel_crtc(crtc); 526 527 intel_crtc->lut_r[regno] = red >> 8; 528 intel_crtc->lut_g[regno] = green >> 8; 529 intel_crtc->lut_b[regno] = blue >> 8; 530 } 531 532 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red, 533 u16 *green, u16 *blue, int regno) 534 { 535 struct psb_intel_crtc *intel_crtc = to_psb_intel_crtc(crtc); 536 537 *red = intel_crtc->lut_r[regno] << 8; 538 *green = intel_crtc->lut_g[regno] << 8; 539 *blue = intel_crtc->lut_b[regno] << 8; 540 } 541 542 static int psbfb_probe(struct drm_fb_helper *helper, 543 struct drm_fb_helper_surface_size *sizes) 544 { 545 struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper; 546 struct drm_device *dev = psb_fbdev->psb_fb_helper.dev; 547 struct drm_psb_private *dev_priv = dev->dev_private; 548 int new_fb = 0; 549 int bytespp; 550 int ret; 551 552 bytespp = sizes->surface_bpp / 8; 553 if (bytespp == 3) /* no 24bit packed */ 554 bytespp = 4; 555 556 /* If the mode will not fit in 32bit then switch to 16bit to get 557 a console on full resolution. The X mode setting server will 558 allocate its own 32bit GEM framebuffer */ 559 if (ALIGN(sizes->fb_width * bytespp, 64) * sizes->fb_height > 560 dev_priv->vram_stolen_size) { 561 sizes->surface_bpp = 16; 562 sizes->surface_depth = 16; 563 } 564 565 if (!helper->fb) { 566 ret = psbfb_create(psb_fbdev, sizes); 567 if (ret) 568 return ret; 569 new_fb = 1; 570 } 571 return new_fb; 572 } 573 574 static struct drm_fb_helper_funcs psb_fb_helper_funcs = { 575 .gamma_set = psbfb_gamma_set, 576 .gamma_get = psbfb_gamma_get, 577 .fb_probe = psbfb_probe, 578 }; 579 580 static int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev) 581 { 582 struct fb_info *info; 583 struct psb_framebuffer *psbfb = &fbdev->pfb; 584 585 if (fbdev->psb_fb_helper.fbdev) { 586 info = fbdev->psb_fb_helper.fbdev; 587 unregister_framebuffer(info); 588 if (info->cmap.len) 589 fb_dealloc_cmap(&info->cmap); 590 framebuffer_release(info); 591 } 592 drm_fb_helper_fini(&fbdev->psb_fb_helper); 593 drm_framebuffer_cleanup(&psbfb->base); 594 595 if (psbfb->gtt) 596 drm_gem_object_unreference(&psbfb->gtt->gem); 597 return 0; 598 } 599 600 int psb_fbdev_init(struct drm_device *dev) 601 { 602 struct psb_fbdev *fbdev; 603 struct drm_psb_private *dev_priv = dev->dev_private; 604 605 fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL); 606 if (!fbdev) { 607 dev_err(dev->dev, "no memory\n"); 608 return -ENOMEM; 609 } 610 611 dev_priv->fbdev = fbdev; 612 fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs; 613 614 drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs, 615 INTELFB_CONN_LIMIT); 616 617 drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper); 618 drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32); 619 return 0; 620 } 621 622 static void psb_fbdev_fini(struct drm_device *dev) 623 { 624 struct drm_psb_private *dev_priv = dev->dev_private; 625 626 if (!dev_priv->fbdev) 627 return; 628 629 psb_fbdev_destroy(dev, dev_priv->fbdev); 630 kfree(dev_priv->fbdev); 631 dev_priv->fbdev = NULL; 632 } 633 634 static void psbfb_output_poll_changed(struct drm_device *dev) 635 { 636 struct drm_psb_private *dev_priv = dev->dev_private; 637 struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev; 638 drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper); 639 } 640 641 /** 642 * psb_user_framebuffer_create_handle - add hamdle to a framebuffer 643 * @fb: framebuffer 644 * @file_priv: our DRM file 645 * @handle: returned handle 646 * 647 * Our framebuffer object is a GTT range which also contains a GEM 648 * object. We need to turn it into a handle for userspace. GEM will do 649 * the work for us 650 */ 651 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb, 652 struct drm_file *file_priv, 653 unsigned int *handle) 654 { 655 struct psb_framebuffer *psbfb = to_psb_fb(fb); 656 struct gtt_range *r = psbfb->gtt; 657 return drm_gem_handle_create(file_priv, &r->gem, handle); 658 } 659 660 /** 661 * psb_user_framebuffer_destroy - destruct user created fb 662 * @fb: framebuffer 663 * 664 * User framebuffers are backed by GEM objects so all we have to do is 665 * clean up a bit and drop the reference, GEM will handle the fallout 666 */ 667 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb) 668 { 669 struct psb_framebuffer *psbfb = to_psb_fb(fb); 670 struct gtt_range *r = psbfb->gtt; 671 struct drm_device *dev = fb->dev; 672 struct drm_psb_private *dev_priv = dev->dev_private; 673 struct psb_fbdev *fbdev = dev_priv->fbdev; 674 struct drm_crtc *crtc; 675 int reset = 0; 676 677 /* Should never get stolen memory for a user fb */ 678 WARN_ON(r->stolen); 679 680 /* Check if we are erroneously live */ 681 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 682 if (crtc->fb == fb) 683 reset = 1; 684 685 if (reset) 686 /* 687 * Now force a sane response before we permit the DRM CRTC 688 * layer to do stupid things like blank the display. Instead 689 * we reset this framebuffer as if the user had forced a reset. 690 * We must do this before the cleanup so that the DRM layer 691 * doesn't get a chance to stick its oar in where it isn't 692 * wanted. 693 */ 694 drm_fb_helper_restore_fbdev_mode(&fbdev->psb_fb_helper); 695 696 /* Let DRM do its clean up */ 697 drm_framebuffer_cleanup(fb); 698 /* We are no longer using the resource in GEM */ 699 drm_gem_object_unreference_unlocked(&r->gem); 700 kfree(fb); 701 } 702 703 static const struct drm_mode_config_funcs psb_mode_funcs = { 704 .fb_create = psb_user_framebuffer_create, 705 .output_poll_changed = psbfb_output_poll_changed, 706 }; 707 708 static int psb_create_backlight_property(struct drm_device *dev) 709 { 710 struct drm_psb_private *dev_priv = dev->dev_private; 711 struct drm_property *backlight; 712 713 if (dev_priv->backlight_property) 714 return 0; 715 716 backlight = drm_property_create_range(dev, 0, "backlight", 0, 100); 717 718 dev_priv->backlight_property = backlight; 719 720 return 0; 721 } 722 723 static void psb_setup_outputs(struct drm_device *dev) 724 { 725 struct drm_psb_private *dev_priv = dev->dev_private; 726 struct drm_connector *connector; 727 728 drm_mode_create_scaling_mode_property(dev); 729 psb_create_backlight_property(dev); 730 731 dev_priv->ops->output_init(dev); 732 733 list_for_each_entry(connector, &dev->mode_config.connector_list, 734 head) { 735 struct psb_intel_encoder *psb_intel_encoder = 736 psb_intel_attached_encoder(connector); 737 struct drm_encoder *encoder = &psb_intel_encoder->base; 738 int crtc_mask = 0, clone_mask = 0; 739 740 /* valid crtcs */ 741 switch (psb_intel_encoder->type) { 742 case INTEL_OUTPUT_ANALOG: 743 crtc_mask = (1 << 0); 744 clone_mask = (1 << INTEL_OUTPUT_ANALOG); 745 break; 746 case INTEL_OUTPUT_SDVO: 747 crtc_mask = ((1 << 0) | (1 << 1)); 748 clone_mask = (1 << INTEL_OUTPUT_SDVO); 749 break; 750 case INTEL_OUTPUT_LVDS: 751 crtc_mask = dev_priv->ops->lvds_mask; 752 clone_mask = (1 << INTEL_OUTPUT_LVDS); 753 break; 754 case INTEL_OUTPUT_MIPI: 755 crtc_mask = (1 << 0); 756 clone_mask = (1 << INTEL_OUTPUT_MIPI); 757 break; 758 case INTEL_OUTPUT_MIPI2: 759 crtc_mask = (1 << 2); 760 clone_mask = (1 << INTEL_OUTPUT_MIPI2); 761 break; 762 case INTEL_OUTPUT_HDMI: 763 crtc_mask = dev_priv->ops->hdmi_mask; 764 clone_mask = (1 << INTEL_OUTPUT_HDMI); 765 break; 766 case INTEL_OUTPUT_DISPLAYPORT: 767 crtc_mask = (1 << 0) | (1 << 1); 768 clone_mask = (1 << INTEL_OUTPUT_DISPLAYPORT); 769 break; 770 case INTEL_OUTPUT_EDP: 771 crtc_mask = (1 << 1); 772 clone_mask = (1 << INTEL_OUTPUT_EDP); 773 } 774 encoder->possible_crtcs = crtc_mask; 775 encoder->possible_clones = 776 psb_intel_connector_clones(dev, clone_mask); 777 } 778 } 779 780 void psb_modeset_init(struct drm_device *dev) 781 { 782 struct drm_psb_private *dev_priv = dev->dev_private; 783 struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; 784 int i; 785 786 drm_mode_config_init(dev); 787 788 dev->mode_config.min_width = 0; 789 dev->mode_config.min_height = 0; 790 791 dev->mode_config.funcs = &psb_mode_funcs; 792 793 /* set memory base */ 794 /* Oaktrail and Poulsbo should use BAR 2*/ 795 pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *) 796 &(dev->mode_config.fb_base)); 797 798 /* num pipes is 2 for PSB but 1 for Mrst */ 799 for (i = 0; i < dev_priv->num_pipe; i++) 800 psb_intel_crtc_init(dev, i, mode_dev); 801 802 dev->mode_config.max_width = 2048; 803 dev->mode_config.max_height = 2048; 804 805 psb_setup_outputs(dev); 806 807 if (dev_priv->ops->errata) 808 dev_priv->ops->errata(dev); 809 810 dev_priv->modeset = true; 811 } 812 813 void psb_modeset_cleanup(struct drm_device *dev) 814 { 815 struct drm_psb_private *dev_priv = dev->dev_private; 816 if (dev_priv->modeset) { 817 mutex_lock(&dev->struct_mutex); 818 819 drm_kms_helper_poll_fini(dev); 820 psb_fbdev_fini(dev); 821 drm_mode_config_cleanup(dev); 822 823 mutex_unlock(&dev->struct_mutex); 824 } 825 } 826