1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Framebuffer driver for EFI/UEFI based system 4 * 5 * (c) 2006 Edgar Hucek <gimli@dark-green.com> 6 * Original efi driver written by Gerd Knorr <kraxel@goldbach.in-berlin.de> 7 * 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/efi.h> 12 #include <linux/efi-bgrt.h> 13 #include <linux/errno.h> 14 #include <linux/fb.h> 15 #include <linux/pci.h> 16 #include <linux/platform_device.h> 17 #include <linux/printk.h> 18 #include <linux/screen_info.h> 19 #include <video/vga.h> 20 #include <asm/efi.h> 21 #include <drm/drm_utils.h> /* For drm_get_panel_orientation_quirk */ 22 #include <drm/drm_connector.h> /* For DRM_MODE_PANEL_ORIENTATION_* */ 23 24 struct bmp_file_header { 25 u16 id; 26 u32 file_size; 27 u32 reserved; 28 u32 bitmap_offset; 29 } __packed; 30 31 struct bmp_dib_header { 32 u32 dib_header_size; 33 s32 width; 34 s32 height; 35 u16 planes; 36 u16 bpp; 37 u32 compression; 38 u32 bitmap_size; 39 u32 horz_resolution; 40 u32 vert_resolution; 41 u32 colors_used; 42 u32 colors_important; 43 } __packed; 44 45 static bool use_bgrt = true; 46 static bool request_mem_succeeded = false; 47 static u64 mem_flags = EFI_MEMORY_WC | EFI_MEMORY_UC; 48 49 static struct fb_var_screeninfo efifb_defined = { 50 .activate = FB_ACTIVATE_NOW, 51 .height = -1, 52 .width = -1, 53 .right_margin = 32, 54 .upper_margin = 16, 55 .lower_margin = 4, 56 .vsync_len = 4, 57 .vmode = FB_VMODE_NONINTERLACED, 58 }; 59 60 static struct fb_fix_screeninfo efifb_fix = { 61 .id = "EFI VGA", 62 .type = FB_TYPE_PACKED_PIXELS, 63 .accel = FB_ACCEL_NONE, 64 .visual = FB_VISUAL_TRUECOLOR, 65 }; 66 67 static int efifb_setcolreg(unsigned regno, unsigned red, unsigned green, 68 unsigned blue, unsigned transp, 69 struct fb_info *info) 70 { 71 /* 72 * Set a single color register. The values supplied are 73 * already rounded down to the hardware's capabilities 74 * (according to the entries in the `var' structure). Return 75 * != 0 for invalid regno. 76 */ 77 78 if (regno >= info->cmap.len) 79 return 1; 80 81 if (regno < 16) { 82 red >>= 16 - info->var.red.length; 83 green >>= 16 - info->var.green.length; 84 blue >>= 16 - info->var.blue.length; 85 ((u32 *)(info->pseudo_palette))[regno] = 86 (red << info->var.red.offset) | 87 (green << info->var.green.offset) | 88 (blue << info->var.blue.offset); 89 } 90 return 0; 91 } 92 93 /* 94 * If fbcon deffered console takeover is configured, the intent is for the 95 * framebuffer to show the boot graphics (e.g. vendor logo) until there is some 96 * (error) message to display. But the boot graphics may have been destroyed by 97 * e.g. option ROM output, detect this and restore the boot graphics. 98 */ 99 #if defined CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER && \ 100 defined CONFIG_ACPI_BGRT 101 static void efifb_copy_bmp(u8 *src, u32 *dst, int width, struct screen_info *si) 102 { 103 u8 r, g, b; 104 105 while (width--) { 106 b = *src++; 107 g = *src++; 108 r = *src++; 109 *dst++ = (r << si->red_pos) | 110 (g << si->green_pos) | 111 (b << si->blue_pos); 112 } 113 } 114 115 #ifdef CONFIG_X86 116 /* 117 * On x86 some firmwares use a low non native resolution for the display when 118 * they have shown some text messages. While keeping the bgrt filled with info 119 * for the native resolution. If the bgrt image intended for the native 120 * resolution still fits, it will be displayed very close to the right edge of 121 * the display looking quite bad. This function checks for this. 122 */ 123 static bool efifb_bgrt_sanity_check(struct screen_info *si, u32 bmp_width) 124 { 125 /* 126 * All x86 firmwares horizontally center the image (the yoffset 127 * calculations differ between boards, but xoffset is predictable). 128 */ 129 u32 expected_xoffset = (si->lfb_width - bmp_width) / 2; 130 131 return bgrt_tab.image_offset_x == expected_xoffset; 132 } 133 #else 134 static bool efifb_bgrt_sanity_check(struct screen_info *si, u32 bmp_width) 135 { 136 return true; 137 } 138 #endif 139 140 static void efifb_show_boot_graphics(struct fb_info *info) 141 { 142 u32 bmp_width, bmp_height, bmp_pitch, screen_pitch, dst_x, y, src_y; 143 struct screen_info *si = &screen_info; 144 struct bmp_file_header *file_header; 145 struct bmp_dib_header *dib_header; 146 void *bgrt_image = NULL; 147 u8 *dst = info->screen_base; 148 149 if (!use_bgrt) 150 return; 151 152 if (!bgrt_tab.image_address) { 153 pr_info("efifb: No BGRT, not showing boot graphics\n"); 154 return; 155 } 156 157 if (bgrt_tab.status & 0x06) { 158 pr_info("efifb: BGRT rotation bits set, not showing boot graphics\n"); 159 return; 160 } 161 162 /* Avoid flashing the logo if we're going to print std probe messages */ 163 if (console_loglevel > CONSOLE_LOGLEVEL_QUIET) 164 return; 165 166 /* bgrt_tab.status is unreliable, so we don't check it */ 167 168 if (si->lfb_depth != 32) { 169 pr_info("efifb: not 32 bits, not showing boot graphics\n"); 170 return; 171 } 172 173 bgrt_image = memremap(bgrt_tab.image_address, bgrt_image_size, 174 MEMREMAP_WB); 175 if (!bgrt_image) { 176 pr_warn("efifb: Ignoring BGRT: failed to map image memory\n"); 177 return; 178 } 179 180 if (bgrt_image_size < (sizeof(*file_header) + sizeof(*dib_header))) 181 goto error; 182 183 file_header = bgrt_image; 184 if (file_header->id != 0x4d42 || file_header->reserved != 0) 185 goto error; 186 187 dib_header = bgrt_image + sizeof(*file_header); 188 if (dib_header->dib_header_size != 40 || dib_header->width < 0 || 189 dib_header->planes != 1 || dib_header->bpp != 24 || 190 dib_header->compression != 0) 191 goto error; 192 193 bmp_width = dib_header->width; 194 bmp_height = abs(dib_header->height); 195 bmp_pitch = round_up(3 * bmp_width, 4); 196 screen_pitch = si->lfb_linelength; 197 198 if ((file_header->bitmap_offset + bmp_pitch * bmp_height) > 199 bgrt_image_size) 200 goto error; 201 202 if ((bgrt_tab.image_offset_x + bmp_width) > si->lfb_width || 203 (bgrt_tab.image_offset_y + bmp_height) > si->lfb_height) 204 goto error; 205 206 if (!efifb_bgrt_sanity_check(si, bmp_width)) 207 goto error; 208 209 pr_info("efifb: showing boot graphics\n"); 210 211 for (y = 0; y < si->lfb_height; y++, dst += si->lfb_linelength) { 212 /* Only background? */ 213 if (y < bgrt_tab.image_offset_y || 214 y >= (bgrt_tab.image_offset_y + bmp_height)) { 215 memset(dst, 0, 4 * si->lfb_width); 216 continue; 217 } 218 219 src_y = y - bgrt_tab.image_offset_y; 220 /* Positive header height means upside down row order */ 221 if (dib_header->height > 0) 222 src_y = (bmp_height - 1) - src_y; 223 224 memset(dst, 0, bgrt_tab.image_offset_x * 4); 225 dst_x = bgrt_tab.image_offset_x; 226 efifb_copy_bmp(bgrt_image + file_header->bitmap_offset + 227 src_y * bmp_pitch, 228 (u32 *)dst + dst_x, bmp_width, si); 229 dst_x += bmp_width; 230 memset((u32 *)dst + dst_x, 0, (si->lfb_width - dst_x) * 4); 231 } 232 233 memunmap(bgrt_image); 234 return; 235 236 error: 237 memunmap(bgrt_image); 238 pr_warn("efifb: Ignoring BGRT: unexpected or invalid BMP data\n"); 239 } 240 #else 241 static inline void efifb_show_boot_graphics(struct fb_info *info) {} 242 #endif 243 244 static void efifb_destroy(struct fb_info *info) 245 { 246 if (info->screen_base) { 247 if (mem_flags & (EFI_MEMORY_UC | EFI_MEMORY_WC)) 248 iounmap(info->screen_base); 249 else 250 memunmap(info->screen_base); 251 } 252 if (request_mem_succeeded) 253 release_mem_region(info->apertures->ranges[0].base, 254 info->apertures->ranges[0].size); 255 fb_dealloc_cmap(&info->cmap); 256 } 257 258 static struct fb_ops efifb_ops = { 259 .owner = THIS_MODULE, 260 .fb_destroy = efifb_destroy, 261 .fb_setcolreg = efifb_setcolreg, 262 .fb_fillrect = cfb_fillrect, 263 .fb_copyarea = cfb_copyarea, 264 .fb_imageblit = cfb_imageblit, 265 }; 266 267 static int efifb_setup(char *options) 268 { 269 char *this_opt; 270 271 if (options && *options) { 272 while ((this_opt = strsep(&options, ",")) != NULL) { 273 if (!*this_opt) continue; 274 275 efifb_setup_from_dmi(&screen_info, this_opt); 276 277 if (!strncmp(this_opt, "base:", 5)) 278 screen_info.lfb_base = simple_strtoul(this_opt+5, NULL, 0); 279 else if (!strncmp(this_opt, "stride:", 7)) 280 screen_info.lfb_linelength = simple_strtoul(this_opt+7, NULL, 0) * 4; 281 else if (!strncmp(this_opt, "height:", 7)) 282 screen_info.lfb_height = simple_strtoul(this_opt+7, NULL, 0); 283 else if (!strncmp(this_opt, "width:", 6)) 284 screen_info.lfb_width = simple_strtoul(this_opt+6, NULL, 0); 285 else if (!strcmp(this_opt, "nowc")) 286 mem_flags &= ~EFI_MEMORY_WC; 287 else if (!strcmp(this_opt, "nobgrt")) 288 use_bgrt = false; 289 } 290 } 291 292 return 0; 293 } 294 295 static inline bool fb_base_is_valid(void) 296 { 297 if (screen_info.lfb_base) 298 return true; 299 300 if (!(screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE)) 301 return false; 302 303 if (screen_info.ext_lfb_base) 304 return true; 305 306 return false; 307 } 308 309 #define efifb_attr_decl(name, fmt) \ 310 static ssize_t name##_show(struct device *dev, \ 311 struct device_attribute *attr, \ 312 char *buf) \ 313 { \ 314 return sprintf(buf, fmt "\n", (screen_info.lfb_##name)); \ 315 } \ 316 static DEVICE_ATTR_RO(name) 317 318 efifb_attr_decl(base, "0x%x"); 319 efifb_attr_decl(linelength, "%u"); 320 efifb_attr_decl(height, "%u"); 321 efifb_attr_decl(width, "%u"); 322 efifb_attr_decl(depth, "%u"); 323 324 static struct attribute *efifb_attrs[] = { 325 &dev_attr_base.attr, 326 &dev_attr_linelength.attr, 327 &dev_attr_width.attr, 328 &dev_attr_height.attr, 329 &dev_attr_depth.attr, 330 NULL 331 }; 332 ATTRIBUTE_GROUPS(efifb); 333 334 static bool pci_dev_disabled; /* FB base matches BAR of a disabled device */ 335 336 static struct pci_dev *efifb_pci_dev; /* dev with BAR covering the efifb */ 337 static struct resource *bar_resource; 338 static u64 bar_offset; 339 340 static int efifb_probe(struct platform_device *dev) 341 { 342 struct fb_info *info; 343 int err, orientation; 344 unsigned int size_vmode; 345 unsigned int size_remap; 346 unsigned int size_total; 347 char *option = NULL; 348 efi_memory_desc_t md; 349 350 if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI || pci_dev_disabled) 351 return -ENODEV; 352 353 if (fb_get_options("efifb", &option)) 354 return -ENODEV; 355 efifb_setup(option); 356 357 /* We don't get linelength from UGA Draw Protocol, only from 358 * EFI Graphics Protocol. So if it's not in DMI, and it's not 359 * passed in from the user, we really can't use the framebuffer. 360 */ 361 if (!screen_info.lfb_linelength) 362 return -ENODEV; 363 364 if (!screen_info.lfb_depth) 365 screen_info.lfb_depth = 32; 366 if (!screen_info.pages) 367 screen_info.pages = 1; 368 if (!fb_base_is_valid()) { 369 printk(KERN_DEBUG "efifb: invalid framebuffer address\n"); 370 return -ENODEV; 371 } 372 printk(KERN_INFO "efifb: probing for efifb\n"); 373 374 /* just assume they're all unset if any are */ 375 if (!screen_info.blue_size) { 376 screen_info.blue_size = 8; 377 screen_info.blue_pos = 0; 378 screen_info.green_size = 8; 379 screen_info.green_pos = 8; 380 screen_info.red_size = 8; 381 screen_info.red_pos = 16; 382 screen_info.rsvd_size = 8; 383 screen_info.rsvd_pos = 24; 384 } 385 386 efifb_fix.smem_start = screen_info.lfb_base; 387 388 if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE) { 389 u64 ext_lfb_base; 390 391 ext_lfb_base = (u64)(unsigned long)screen_info.ext_lfb_base << 32; 392 efifb_fix.smem_start |= ext_lfb_base; 393 } 394 395 if (bar_resource && 396 bar_resource->start + bar_offset != efifb_fix.smem_start) { 397 dev_info(&efifb_pci_dev->dev, 398 "BAR has moved, updating efifb address\n"); 399 efifb_fix.smem_start = bar_resource->start + bar_offset; 400 } 401 402 efifb_defined.bits_per_pixel = screen_info.lfb_depth; 403 efifb_defined.xres = screen_info.lfb_width; 404 efifb_defined.yres = screen_info.lfb_height; 405 efifb_fix.line_length = screen_info.lfb_linelength; 406 407 /* size_vmode -- that is the amount of memory needed for the 408 * used video mode, i.e. the minimum amount of 409 * memory we need. */ 410 size_vmode = efifb_defined.yres * efifb_fix.line_length; 411 412 /* size_total -- all video memory we have. Used for 413 * entries, ressource allocation and bounds 414 * checking. */ 415 size_total = screen_info.lfb_size; 416 if (size_total < size_vmode) 417 size_total = size_vmode; 418 419 /* size_remap -- the amount of video memory we are going to 420 * use for efifb. With modern cards it is no 421 * option to simply use size_total as that 422 * wastes plenty of kernel address space. */ 423 size_remap = size_vmode * 2; 424 if (size_remap > size_total) 425 size_remap = size_total; 426 if (size_remap % PAGE_SIZE) 427 size_remap += PAGE_SIZE - (size_remap % PAGE_SIZE); 428 efifb_fix.smem_len = size_remap; 429 430 if (request_mem_region(efifb_fix.smem_start, size_remap, "efifb")) { 431 request_mem_succeeded = true; 432 } else { 433 /* We cannot make this fatal. Sometimes this comes from magic 434 spaces our resource handlers simply don't know about */ 435 pr_warn("efifb: cannot reserve video memory at 0x%lx\n", 436 efifb_fix.smem_start); 437 } 438 439 info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev); 440 if (!info) { 441 err = -ENOMEM; 442 goto err_release_mem; 443 } 444 platform_set_drvdata(dev, info); 445 info->pseudo_palette = info->par; 446 info->par = NULL; 447 448 info->apertures = alloc_apertures(1); 449 if (!info->apertures) { 450 err = -ENOMEM; 451 goto err_release_fb; 452 } 453 info->apertures->ranges[0].base = efifb_fix.smem_start; 454 info->apertures->ranges[0].size = size_remap; 455 456 if (efi_enabled(EFI_BOOT) && 457 !efi_mem_desc_lookup(efifb_fix.smem_start, &md)) { 458 if ((efifb_fix.smem_start + efifb_fix.smem_len) > 459 (md.phys_addr + (md.num_pages << EFI_PAGE_SHIFT))) { 460 pr_err("efifb: video memory @ 0x%lx spans multiple EFI memory regions\n", 461 efifb_fix.smem_start); 462 err = -EIO; 463 goto err_release_fb; 464 } 465 /* 466 * If the UEFI memory map covers the efifb region, we may only 467 * remap it using the attributes the memory map prescribes. 468 */ 469 md.attribute &= EFI_MEMORY_UC | EFI_MEMORY_WC | 470 EFI_MEMORY_WT | EFI_MEMORY_WB; 471 if (md.attribute) { 472 mem_flags |= EFI_MEMORY_WT | EFI_MEMORY_WB; 473 mem_flags &= md.attribute; 474 } 475 } 476 if (mem_flags & EFI_MEMORY_WC) 477 info->screen_base = ioremap_wc(efifb_fix.smem_start, 478 efifb_fix.smem_len); 479 else if (mem_flags & EFI_MEMORY_UC) 480 info->screen_base = ioremap(efifb_fix.smem_start, 481 efifb_fix.smem_len); 482 else if (mem_flags & EFI_MEMORY_WT) 483 info->screen_base = memremap(efifb_fix.smem_start, 484 efifb_fix.smem_len, MEMREMAP_WT); 485 else if (mem_flags & EFI_MEMORY_WB) 486 info->screen_base = memremap(efifb_fix.smem_start, 487 efifb_fix.smem_len, MEMREMAP_WB); 488 if (!info->screen_base) { 489 pr_err("efifb: abort, cannot remap video memory 0x%x @ 0x%lx\n", 490 efifb_fix.smem_len, efifb_fix.smem_start); 491 err = -EIO; 492 goto err_release_fb; 493 } 494 495 efifb_show_boot_graphics(info); 496 497 pr_info("efifb: framebuffer at 0x%lx, using %dk, total %dk\n", 498 efifb_fix.smem_start, size_remap/1024, size_total/1024); 499 pr_info("efifb: mode is %dx%dx%d, linelength=%d, pages=%d\n", 500 efifb_defined.xres, efifb_defined.yres, 501 efifb_defined.bits_per_pixel, efifb_fix.line_length, 502 screen_info.pages); 503 504 efifb_defined.xres_virtual = efifb_defined.xres; 505 efifb_defined.yres_virtual = efifb_fix.smem_len / 506 efifb_fix.line_length; 507 pr_info("efifb: scrolling: redraw\n"); 508 efifb_defined.yres_virtual = efifb_defined.yres; 509 510 /* some dummy values for timing to make fbset happy */ 511 efifb_defined.pixclock = 10000000 / efifb_defined.xres * 512 1000 / efifb_defined.yres; 513 efifb_defined.left_margin = (efifb_defined.xres / 8) & 0xf8; 514 efifb_defined.hsync_len = (efifb_defined.xres / 8) & 0xf8; 515 516 efifb_defined.red.offset = screen_info.red_pos; 517 efifb_defined.red.length = screen_info.red_size; 518 efifb_defined.green.offset = screen_info.green_pos; 519 efifb_defined.green.length = screen_info.green_size; 520 efifb_defined.blue.offset = screen_info.blue_pos; 521 efifb_defined.blue.length = screen_info.blue_size; 522 efifb_defined.transp.offset = screen_info.rsvd_pos; 523 efifb_defined.transp.length = screen_info.rsvd_size; 524 525 pr_info("efifb: %s: " 526 "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n", 527 "Truecolor", 528 screen_info.rsvd_size, 529 screen_info.red_size, 530 screen_info.green_size, 531 screen_info.blue_size, 532 screen_info.rsvd_pos, 533 screen_info.red_pos, 534 screen_info.green_pos, 535 screen_info.blue_pos); 536 537 efifb_fix.ypanstep = 0; 538 efifb_fix.ywrapstep = 0; 539 540 info->fbops = &efifb_ops; 541 info->var = efifb_defined; 542 info->fix = efifb_fix; 543 info->flags = FBINFO_FLAG_DEFAULT | FBINFO_MISC_FIRMWARE; 544 545 orientation = drm_get_panel_orientation_quirk(efifb_defined.xres, 546 efifb_defined.yres); 547 switch (orientation) { 548 default: 549 info->fbcon_rotate_hint = FB_ROTATE_UR; 550 break; 551 case DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP: 552 info->fbcon_rotate_hint = FB_ROTATE_UD; 553 break; 554 case DRM_MODE_PANEL_ORIENTATION_LEFT_UP: 555 info->fbcon_rotate_hint = FB_ROTATE_CCW; 556 break; 557 case DRM_MODE_PANEL_ORIENTATION_RIGHT_UP: 558 info->fbcon_rotate_hint = FB_ROTATE_CW; 559 break; 560 } 561 562 err = sysfs_create_groups(&dev->dev.kobj, efifb_groups); 563 if (err) { 564 pr_err("efifb: cannot add sysfs attrs\n"); 565 goto err_unmap; 566 } 567 err = fb_alloc_cmap(&info->cmap, 256, 0); 568 if (err < 0) { 569 pr_err("efifb: cannot allocate colormap\n"); 570 goto err_groups; 571 } 572 err = register_framebuffer(info); 573 if (err < 0) { 574 pr_err("efifb: cannot register framebuffer\n"); 575 goto err_fb_dealoc; 576 } 577 fb_info(info, "%s frame buffer device\n", info->fix.id); 578 return 0; 579 580 err_fb_dealoc: 581 fb_dealloc_cmap(&info->cmap); 582 err_groups: 583 sysfs_remove_groups(&dev->dev.kobj, efifb_groups); 584 err_unmap: 585 if (mem_flags & (EFI_MEMORY_UC | EFI_MEMORY_WC)) 586 iounmap(info->screen_base); 587 else 588 memunmap(info->screen_base); 589 err_release_fb: 590 framebuffer_release(info); 591 err_release_mem: 592 if (request_mem_succeeded) 593 release_mem_region(efifb_fix.smem_start, size_total); 594 return err; 595 } 596 597 static int efifb_remove(struct platform_device *pdev) 598 { 599 struct fb_info *info = platform_get_drvdata(pdev); 600 601 unregister_framebuffer(info); 602 sysfs_remove_groups(&pdev->dev.kobj, efifb_groups); 603 framebuffer_release(info); 604 605 return 0; 606 } 607 608 static struct platform_driver efifb_driver = { 609 .driver = { 610 .name = "efi-framebuffer", 611 }, 612 .probe = efifb_probe, 613 .remove = efifb_remove, 614 }; 615 616 builtin_platform_driver(efifb_driver); 617 618 #if defined(CONFIG_PCI) 619 620 static void record_efifb_bar_resource(struct pci_dev *dev, int idx, u64 offset) 621 { 622 u16 word; 623 624 efifb_pci_dev = dev; 625 626 pci_read_config_word(dev, PCI_COMMAND, &word); 627 if (!(word & PCI_COMMAND_MEMORY)) { 628 pci_dev_disabled = true; 629 dev_err(&dev->dev, 630 "BAR %d: assigned to efifb but device is disabled!\n", 631 idx); 632 return; 633 } 634 635 bar_resource = &dev->resource[idx]; 636 bar_offset = offset; 637 638 dev_info(&dev->dev, "BAR %d: assigned to efifb\n", idx); 639 } 640 641 static void efifb_fixup_resources(struct pci_dev *dev) 642 { 643 u64 base = screen_info.lfb_base; 644 u64 size = screen_info.lfb_size; 645 int i; 646 647 if (efifb_pci_dev || screen_info.orig_video_isVGA != VIDEO_TYPE_EFI) 648 return; 649 650 if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE) 651 base |= (u64)screen_info.ext_lfb_base << 32; 652 653 if (!base) 654 return; 655 656 for (i = 0; i <= PCI_STD_RESOURCE_END; i++) { 657 struct resource *res = &dev->resource[i]; 658 659 if (!(res->flags & IORESOURCE_MEM)) 660 continue; 661 662 if (res->start <= base && res->end >= base + size - 1) { 663 record_efifb_bar_resource(dev, i, base - res->start); 664 break; 665 } 666 } 667 } 668 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY, 669 16, efifb_fixup_resources); 670 671 #endif 672