mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 07:43:57 +07:00
06e386a1db
- add support for deferred console takeover, when enabled defers fbcon taking over the console from the dummy console until the first text is displayed on the console - together with the "quiet" kernel commandline option this allows fbcon to still be used together with a smooth graphical bootup (Hans de Goede) - improve console locking debugging code (Thomas Zimmermann) - copy the ACPI BGRT boot graphics to the framebuffer when deferred console takeover support is used in efifb driver (Hans de Goede) - update udlfb driver - fix lost console when the user unplugs a USB adapter, fix the screen corruption issue, fix locking and add some performance optimizations (Mikulas Patocka) - update pxafb driver - fix using uninitialized memory, switch to devm_* API, handle initialization errors and add support for lcd-supply regulator (Daniel Mack) - add support for boards booted with a DeviceTree in pxa3xx_gcu driver (Daniel Mack) - rename omap2 module to omap2fb.ko to avoid conflicts with omap1 driver (Arnd Bergmann) - enable ACPI-based enumeration for goldfishfb driver (Yu Ning) - fix goldfishfb driver to make user space Android code use 60 fps (Christoffer Dall) - print big fat warning when nomodeset kernel parameter is used in vgacon driver (Lyude Paul) - remove VLA usage from fsl-diu-fb driver (Kees Cook) - misc fixes (Julia Lawall, Geert Uytterhoeven, Fredrik Noring, Yisheng Xie, Dan Carpenter, Daniel Vetter, Anton Vasilyev, Randy Dunlap, Gustavo A. R. Silva, Colin Ian King, Fengguang Wu) - misc cleanups (Roman Kiryanov, Yisheng Xie, Colin Ian King) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABCAAGBQJbfqB3AAoJEH4ztj+gR8ILakkP/RO8oXz11Gkb/EzqrH4woHa/ Wpzia5e3NDYllSWAP/t5UeaDbL5WuHzzLkeCEKXFUhFInR5jM19TF9sdUR8xUzGu dKCAdUaQWsO0rSe04fMHlJXk6RCSl0n0gfd7JM6qhM9YEuEpFM1k17/aKoy8pcwX m3bqfQHZAbLxo4UveBVeorTkx7F5bpanbQoCa4YDaDkU3CCTwohBLNR32zPdeMis Sy0WDdRjuvQvFui2eTU3kPFnHMKETijoS17rq72s6PNtI86yVBCvEE+08jIJZ6Hi A2iePfUuQd5FwzKilRoTR3X8XDIvkZbQ2idKeWgwYJOGM7C2JaDyMXvtkgS3/QeS muiwxLAdqZWG2/8Hb3HviRDOGqvAMWRzQbRgQsndM6pgI3MJ2CyfpvGfI1EhQoe3 WFp0eLa8rOqZ2jUx8mcEhuYOzO/PobMD4sYW+GrxGYFvrMwexvm4sJ3rxf4xx49F upvyDDDTdHHjUrOTiIM7bwTYnMMWSfZQhUBPPy7fJJsGU6/GqPUM5ReOclMCtC8m 5sbiJKuHR/SyJtbRinVV3e/cfmFXHCauD3L4wFIkpC0ZQlRaHC/bjz0Pdbwxgxua Ug1+5CFFYqh8cKUTelfNTm1g02zHqEaMh2zvHYrqS7DIHidj3Bvn6SQxj7ndeHZG QTjrpbGhTc68bSOPZZ+b =7UE9 -----END PGP SIGNATURE----- Merge tag 'fbdev-v4.19' of https://github.com/bzolnier/linux Pull fbdev updates from Bartlomiej Zolnierkiewicz: "Mostly small fixes and cleanups for fb drivers (the biggest updates are for udlfb and pxafb drivers). This also adds deferred console takeover support to the console code and efifb driver. Summary: - add support for deferred console takeover, when enabled defers fbcon taking over the console from the dummy console until the first text is displayed on the console - together with the "quiet" kernel commandline option this allows fbcon to still be used together with a smooth graphical bootup (Hans de Goede) - improve console locking debugging code (Thomas Zimmermann) - copy the ACPI BGRT boot graphics to the framebuffer when deferred console takeover support is used in efifb driver (Hans de Goede) - update udlfb driver - fix lost console when the user unplugs a USB adapter, fix the screen corruption issue, fix locking and add some performance optimizations (Mikulas Patocka) - update pxafb driver - fix using uninitialized memory, switch to devm_* API, handle initialization errors and add support for lcd-supply regulator (Daniel Mack) - add support for boards booted with a DeviceTree in pxa3xx_gcu driver (Daniel Mack) - rename omap2 module to omap2fb.ko to avoid conflicts with omap1 driver (Arnd Bergmann) - enable ACPI-based enumeration for goldfishfb driver (Yu Ning) - fix goldfishfb driver to make user space Android code use 60 fps (Christoffer Dall) - print big fat warning when nomodeset kernel parameter is used in vgacon driver (Lyude Paul) - remove VLA usage from fsl-diu-fb driver (Kees Cook) - misc fixes (Julia Lawall, Geert Uytterhoeven, Fredrik Noring, Yisheng Xie, Dan Carpenter, Daniel Vetter, Anton Vasilyev, Randy Dunlap, Gustavo A. R. Silva, Colin Ian King, Fengguang Wu) - misc cleanups (Roman Kiryanov, Yisheng Xie, Colin Ian King)" * tag 'fbdev-v4.19' of https://github.com/bzolnier/linux: (54 commits) Documentation/fb: corrections for fbcon.txt fbcon: Do not takeover the console from atomic context dummycon: Stop exporting dummycon_[un]register_output_notifier fbcon: Only defer console takeover if the current console driver is the dummycon fbcon: Only allow FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER if fbdev is builtin fbdev: omap2: omapfb: fix ifnullfree.cocci warnings fbdev: omap2: omapfb: fix bugon.cocci warnings fbdev: omap2: omapfb: fix boolreturn.cocci warnings fb: amifb: fix build warnings when not builtin fbdev/core: Disable console-lock warnings when fb.lockless_register_fb is set console: Replace #if 0 with atomic var 'ignore_console_lock_warning' udlfb: use spin_lock_irq instead of spin_lock_irqsave udlfb: avoid prefetch udlfb: optimization - test the backing buffer udlfb: allow reallocating the framebuffer udlfb: set line_length in dlfb_ops_set_par udlfb: handle allocation failure udlfb: set optimal write delay udlfb: make a local copy of fb_ops udlfb: don't switch if we are switching to the same videomode ...
672 lines
18 KiB
C
672 lines
18 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Framebuffer driver for EFI/UEFI based system
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*
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* (c) 2006 Edgar Hucek <gimli@dark-green.com>
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* Original efi driver written by Gerd Knorr <kraxel@goldbach.in-berlin.de>
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*
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*/
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#include <linux/kernel.h>
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#include <linux/efi.h>
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#include <linux/efi-bgrt.h>
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#include <linux/errno.h>
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#include <linux/fb.h>
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#include <linux/pci.h>
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#include <linux/platform_device.h>
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#include <linux/printk.h>
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#include <linux/screen_info.h>
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#include <video/vga.h>
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#include <asm/efi.h>
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#include <drm/drm_utils.h> /* For drm_get_panel_orientation_quirk */
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#include <drm/drm_connector.h> /* For DRM_MODE_PANEL_ORIENTATION_* */
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struct bmp_file_header {
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u16 id;
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u32 file_size;
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u32 reserved;
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u32 bitmap_offset;
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} __packed;
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struct bmp_dib_header {
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u32 dib_header_size;
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s32 width;
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s32 height;
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u16 planes;
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u16 bpp;
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u32 compression;
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u32 bitmap_size;
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u32 horz_resolution;
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u32 vert_resolution;
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u32 colors_used;
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u32 colors_important;
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} __packed;
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static bool request_mem_succeeded = false;
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static u64 mem_flags = EFI_MEMORY_WC | EFI_MEMORY_UC;
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static struct fb_var_screeninfo efifb_defined = {
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.activate = FB_ACTIVATE_NOW,
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.height = -1,
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.width = -1,
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.right_margin = 32,
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.upper_margin = 16,
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.lower_margin = 4,
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.vsync_len = 4,
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.vmode = FB_VMODE_NONINTERLACED,
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};
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static struct fb_fix_screeninfo efifb_fix = {
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.id = "EFI VGA",
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.type = FB_TYPE_PACKED_PIXELS,
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.accel = FB_ACCEL_NONE,
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.visual = FB_VISUAL_TRUECOLOR,
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};
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static int efifb_setcolreg(unsigned regno, unsigned red, unsigned green,
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unsigned blue, unsigned transp,
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struct fb_info *info)
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{
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/*
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* Set a single color register. The values supplied are
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* already rounded down to the hardware's capabilities
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* (according to the entries in the `var' structure). Return
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* != 0 for invalid regno.
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*/
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if (regno >= info->cmap.len)
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return 1;
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if (regno < 16) {
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red >>= 16 - info->var.red.length;
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green >>= 16 - info->var.green.length;
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blue >>= 16 - info->var.blue.length;
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((u32 *)(info->pseudo_palette))[regno] =
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(red << info->var.red.offset) |
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(green << info->var.green.offset) |
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(blue << info->var.blue.offset);
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}
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return 0;
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}
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/*
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* If fbcon deffered console takeover is configured, the intent is for the
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* framebuffer to show the boot graphics (e.g. vendor logo) until there is some
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* (error) message to display. But the boot graphics may have been destroyed by
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* e.g. option ROM output, detect this and restore the boot graphics.
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*/
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#if defined CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER && \
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defined CONFIG_ACPI_BGRT
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static void efifb_copy_bmp(u8 *src, u32 *dst, int width, struct screen_info *si)
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{
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u8 r, g, b;
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while (width--) {
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b = *src++;
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g = *src++;
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r = *src++;
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*dst++ = (r << si->red_pos) |
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(g << si->green_pos) |
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(b << si->blue_pos);
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}
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}
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#ifdef CONFIG_X86
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/*
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* On x86 some firmwares use a low non native resolution for the display when
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* they have shown some text messages. While keeping the bgrt filled with info
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* for the native resolution. If the bgrt image intended for the native
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* resolution still fits, it will be displayed very close to the right edge of
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* the display looking quite bad. This function checks for this.
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*/
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static bool efifb_bgrt_sanity_check(struct screen_info *si, u32 bmp_width)
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{
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static const int default_resolutions[][2] = {
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{ 800, 600 },
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{ 1024, 768 },
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{ 1280, 1024 },
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};
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u32 i, right_margin;
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for (i = 0; i < ARRAY_SIZE(default_resolutions); i++) {
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if (default_resolutions[i][0] == si->lfb_width &&
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default_resolutions[i][1] == si->lfb_height)
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break;
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}
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/* If not a default resolution used for textmode, this should be fine */
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if (i >= ARRAY_SIZE(default_resolutions))
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return true;
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/* If the right margin is 5 times smaller then the left one, reject */
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right_margin = si->lfb_width - (bgrt_tab.image_offset_x + bmp_width);
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if (right_margin < (bgrt_tab.image_offset_x / 5))
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return false;
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return true;
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}
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#else
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static bool efifb_bgrt_sanity_check(struct screen_info *si, u32 bmp_width)
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{
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return true;
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}
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#endif
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static void efifb_show_boot_graphics(struct fb_info *info)
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{
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u32 bmp_width, bmp_height, bmp_pitch, screen_pitch, dst_x, y, src_y;
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struct screen_info *si = &screen_info;
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struct bmp_file_header *file_header;
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struct bmp_dib_header *dib_header;
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void *bgrt_image = NULL;
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u8 *dst = info->screen_base;
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if (!bgrt_tab.image_address) {
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pr_info("efifb: No BGRT, not showing boot graphics\n");
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return;
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}
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/* Avoid flashing the logo if we're going to print std probe messages */
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if (console_loglevel > CONSOLE_LOGLEVEL_QUIET)
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return;
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/* bgrt_tab.status is unreliable, so we don't check it */
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if (si->lfb_depth != 32) {
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pr_info("efifb: not 32 bits, not showing boot graphics\n");
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return;
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}
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bgrt_image = memremap(bgrt_tab.image_address, bgrt_image_size,
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MEMREMAP_WB);
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if (!bgrt_image) {
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pr_warn("efifb: Ignoring BGRT: failed to map image memory\n");
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return;
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}
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if (bgrt_image_size < (sizeof(*file_header) + sizeof(*dib_header)))
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goto error;
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file_header = bgrt_image;
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if (file_header->id != 0x4d42 || file_header->reserved != 0)
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goto error;
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dib_header = bgrt_image + sizeof(*file_header);
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if (dib_header->dib_header_size != 40 || dib_header->width < 0 ||
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dib_header->planes != 1 || dib_header->bpp != 24 ||
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dib_header->compression != 0)
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goto error;
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bmp_width = dib_header->width;
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bmp_height = abs(dib_header->height);
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bmp_pitch = round_up(3 * bmp_width, 4);
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screen_pitch = si->lfb_linelength;
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if ((file_header->bitmap_offset + bmp_pitch * bmp_height) >
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bgrt_image_size)
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goto error;
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if ((bgrt_tab.image_offset_x + bmp_width) > si->lfb_width ||
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(bgrt_tab.image_offset_y + bmp_height) > si->lfb_height)
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goto error;
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if (!efifb_bgrt_sanity_check(si, bmp_width))
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goto error;
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pr_info("efifb: showing boot graphics\n");
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for (y = 0; y < si->lfb_height; y++, dst += si->lfb_linelength) {
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/* Only background? */
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if (y < bgrt_tab.image_offset_y ||
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y >= (bgrt_tab.image_offset_y + bmp_height)) {
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memset(dst, 0, 4 * si->lfb_width);
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continue;
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}
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src_y = y - bgrt_tab.image_offset_y;
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/* Positive header height means upside down row order */
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if (dib_header->height > 0)
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src_y = (bmp_height - 1) - src_y;
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memset(dst, 0, bgrt_tab.image_offset_x * 4);
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dst_x = bgrt_tab.image_offset_x;
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efifb_copy_bmp(bgrt_image + file_header->bitmap_offset +
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src_y * bmp_pitch,
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(u32 *)dst + dst_x, bmp_width, si);
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dst_x += bmp_width;
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memset((u32 *)dst + dst_x, 0, (si->lfb_width - dst_x) * 4);
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}
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memunmap(bgrt_image);
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return;
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error:
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memunmap(bgrt_image);
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pr_warn("efifb: Ignoring BGRT: unexpected or invalid BMP data\n");
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}
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#else
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static inline void efifb_show_boot_graphics(struct fb_info *info) {}
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#endif
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static void efifb_destroy(struct fb_info *info)
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{
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if (info->screen_base) {
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if (mem_flags & (EFI_MEMORY_UC | EFI_MEMORY_WC))
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iounmap(info->screen_base);
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else
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memunmap(info->screen_base);
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}
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if (request_mem_succeeded)
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release_mem_region(info->apertures->ranges[0].base,
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info->apertures->ranges[0].size);
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fb_dealloc_cmap(&info->cmap);
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}
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static struct fb_ops efifb_ops = {
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.owner = THIS_MODULE,
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.fb_destroy = efifb_destroy,
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.fb_setcolreg = efifb_setcolreg,
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.fb_fillrect = cfb_fillrect,
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.fb_copyarea = cfb_copyarea,
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.fb_imageblit = cfb_imageblit,
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};
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static int efifb_setup(char *options)
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{
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char *this_opt;
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if (options && *options) {
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while ((this_opt = strsep(&options, ",")) != NULL) {
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if (!*this_opt) continue;
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efifb_setup_from_dmi(&screen_info, this_opt);
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if (!strncmp(this_opt, "base:", 5))
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screen_info.lfb_base = simple_strtoul(this_opt+5, NULL, 0);
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else if (!strncmp(this_opt, "stride:", 7))
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screen_info.lfb_linelength = simple_strtoul(this_opt+7, NULL, 0) * 4;
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else if (!strncmp(this_opt, "height:", 7))
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screen_info.lfb_height = simple_strtoul(this_opt+7, NULL, 0);
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else if (!strncmp(this_opt, "width:", 6))
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screen_info.lfb_width = simple_strtoul(this_opt+6, NULL, 0);
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else if (!strcmp(this_opt, "nowc"))
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mem_flags &= ~EFI_MEMORY_WC;
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}
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}
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return 0;
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}
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static inline bool fb_base_is_valid(void)
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{
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if (screen_info.lfb_base)
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return true;
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if (!(screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE))
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return false;
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if (screen_info.ext_lfb_base)
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return true;
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return false;
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}
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#define efifb_attr_decl(name, fmt) \
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static ssize_t name##_show(struct device *dev, \
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struct device_attribute *attr, \
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char *buf) \
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{ \
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return sprintf(buf, fmt "\n", (screen_info.lfb_##name)); \
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} \
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static DEVICE_ATTR_RO(name)
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efifb_attr_decl(base, "0x%x");
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efifb_attr_decl(linelength, "%u");
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efifb_attr_decl(height, "%u");
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efifb_attr_decl(width, "%u");
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efifb_attr_decl(depth, "%u");
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static struct attribute *efifb_attrs[] = {
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&dev_attr_base.attr,
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&dev_attr_linelength.attr,
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&dev_attr_width.attr,
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&dev_attr_height.attr,
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&dev_attr_depth.attr,
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NULL
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};
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ATTRIBUTE_GROUPS(efifb);
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static bool pci_dev_disabled; /* FB base matches BAR of a disabled device */
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static struct pci_dev *efifb_pci_dev; /* dev with BAR covering the efifb */
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static struct resource *bar_resource;
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static u64 bar_offset;
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static int efifb_probe(struct platform_device *dev)
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{
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struct fb_info *info;
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int err, orientation;
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unsigned int size_vmode;
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unsigned int size_remap;
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unsigned int size_total;
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char *option = NULL;
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efi_memory_desc_t md;
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if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI || pci_dev_disabled)
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return -ENODEV;
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if (fb_get_options("efifb", &option))
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return -ENODEV;
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efifb_setup(option);
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/* We don't get linelength from UGA Draw Protocol, only from
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* EFI Graphics Protocol. So if it's not in DMI, and it's not
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* passed in from the user, we really can't use the framebuffer.
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*/
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if (!screen_info.lfb_linelength)
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return -ENODEV;
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if (!screen_info.lfb_depth)
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screen_info.lfb_depth = 32;
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if (!screen_info.pages)
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screen_info.pages = 1;
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if (!fb_base_is_valid()) {
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printk(KERN_DEBUG "efifb: invalid framebuffer address\n");
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return -ENODEV;
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}
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printk(KERN_INFO "efifb: probing for efifb\n");
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/* just assume they're all unset if any are */
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if (!screen_info.blue_size) {
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screen_info.blue_size = 8;
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screen_info.blue_pos = 0;
|
|
screen_info.green_size = 8;
|
|
screen_info.green_pos = 8;
|
|
screen_info.red_size = 8;
|
|
screen_info.red_pos = 16;
|
|
screen_info.rsvd_size = 8;
|
|
screen_info.rsvd_pos = 24;
|
|
}
|
|
|
|
efifb_fix.smem_start = screen_info.lfb_base;
|
|
|
|
if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE) {
|
|
u64 ext_lfb_base;
|
|
|
|
ext_lfb_base = (u64)(unsigned long)screen_info.ext_lfb_base << 32;
|
|
efifb_fix.smem_start |= ext_lfb_base;
|
|
}
|
|
|
|
if (bar_resource &&
|
|
bar_resource->start + bar_offset != efifb_fix.smem_start) {
|
|
dev_info(&efifb_pci_dev->dev,
|
|
"BAR has moved, updating efifb address\n");
|
|
efifb_fix.smem_start = bar_resource->start + bar_offset;
|
|
}
|
|
|
|
efifb_defined.bits_per_pixel = screen_info.lfb_depth;
|
|
efifb_defined.xres = screen_info.lfb_width;
|
|
efifb_defined.yres = screen_info.lfb_height;
|
|
efifb_fix.line_length = screen_info.lfb_linelength;
|
|
|
|
/* size_vmode -- that is the amount of memory needed for the
|
|
* used video mode, i.e. the minimum amount of
|
|
* memory we need. */
|
|
size_vmode = efifb_defined.yres * efifb_fix.line_length;
|
|
|
|
/* size_total -- all video memory we have. Used for
|
|
* entries, ressource allocation and bounds
|
|
* checking. */
|
|
size_total = screen_info.lfb_size;
|
|
if (size_total < size_vmode)
|
|
size_total = size_vmode;
|
|
|
|
/* size_remap -- the amount of video memory we are going to
|
|
* use for efifb. With modern cards it is no
|
|
* option to simply use size_total as that
|
|
* wastes plenty of kernel address space. */
|
|
size_remap = size_vmode * 2;
|
|
if (size_remap > size_total)
|
|
size_remap = size_total;
|
|
if (size_remap % PAGE_SIZE)
|
|
size_remap += PAGE_SIZE - (size_remap % PAGE_SIZE);
|
|
efifb_fix.smem_len = size_remap;
|
|
|
|
if (request_mem_region(efifb_fix.smem_start, size_remap, "efifb")) {
|
|
request_mem_succeeded = true;
|
|
} else {
|
|
/* We cannot make this fatal. Sometimes this comes from magic
|
|
spaces our resource handlers simply don't know about */
|
|
pr_warn("efifb: cannot reserve video memory at 0x%lx\n",
|
|
efifb_fix.smem_start);
|
|
}
|
|
|
|
info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
|
|
if (!info) {
|
|
pr_err("efifb: cannot allocate framebuffer\n");
|
|
err = -ENOMEM;
|
|
goto err_release_mem;
|
|
}
|
|
platform_set_drvdata(dev, info);
|
|
info->pseudo_palette = info->par;
|
|
info->par = NULL;
|
|
|
|
info->apertures = alloc_apertures(1);
|
|
if (!info->apertures) {
|
|
err = -ENOMEM;
|
|
goto err_release_fb;
|
|
}
|
|
info->apertures->ranges[0].base = efifb_fix.smem_start;
|
|
info->apertures->ranges[0].size = size_remap;
|
|
|
|
if (!efi_mem_desc_lookup(efifb_fix.smem_start, &md)) {
|
|
if ((efifb_fix.smem_start + efifb_fix.smem_len) >
|
|
(md.phys_addr + (md.num_pages << EFI_PAGE_SHIFT))) {
|
|
pr_err("efifb: video memory @ 0x%lx spans multiple EFI memory regions\n",
|
|
efifb_fix.smem_start);
|
|
err = -EIO;
|
|
goto err_release_fb;
|
|
}
|
|
/*
|
|
* If the UEFI memory map covers the efifb region, we may only
|
|
* remap it using the attributes the memory map prescribes.
|
|
*/
|
|
mem_flags |= EFI_MEMORY_WT | EFI_MEMORY_WB;
|
|
mem_flags &= md.attribute;
|
|
}
|
|
if (mem_flags & EFI_MEMORY_WC)
|
|
info->screen_base = ioremap_wc(efifb_fix.smem_start,
|
|
efifb_fix.smem_len);
|
|
else if (mem_flags & EFI_MEMORY_UC)
|
|
info->screen_base = ioremap(efifb_fix.smem_start,
|
|
efifb_fix.smem_len);
|
|
else if (mem_flags & EFI_MEMORY_WT)
|
|
info->screen_base = memremap(efifb_fix.smem_start,
|
|
efifb_fix.smem_len, MEMREMAP_WT);
|
|
else if (mem_flags & EFI_MEMORY_WB)
|
|
info->screen_base = memremap(efifb_fix.smem_start,
|
|
efifb_fix.smem_len, MEMREMAP_WB);
|
|
if (!info->screen_base) {
|
|
pr_err("efifb: abort, cannot remap video memory 0x%x @ 0x%lx\n",
|
|
efifb_fix.smem_len, efifb_fix.smem_start);
|
|
err = -EIO;
|
|
goto err_release_fb;
|
|
}
|
|
|
|
efifb_show_boot_graphics(info);
|
|
|
|
pr_info("efifb: framebuffer at 0x%lx, using %dk, total %dk\n",
|
|
efifb_fix.smem_start, size_remap/1024, size_total/1024);
|
|
pr_info("efifb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
|
|
efifb_defined.xres, efifb_defined.yres,
|
|
efifb_defined.bits_per_pixel, efifb_fix.line_length,
|
|
screen_info.pages);
|
|
|
|
efifb_defined.xres_virtual = efifb_defined.xres;
|
|
efifb_defined.yres_virtual = efifb_fix.smem_len /
|
|
efifb_fix.line_length;
|
|
pr_info("efifb: scrolling: redraw\n");
|
|
efifb_defined.yres_virtual = efifb_defined.yres;
|
|
|
|
/* some dummy values for timing to make fbset happy */
|
|
efifb_defined.pixclock = 10000000 / efifb_defined.xres *
|
|
1000 / efifb_defined.yres;
|
|
efifb_defined.left_margin = (efifb_defined.xres / 8) & 0xf8;
|
|
efifb_defined.hsync_len = (efifb_defined.xres / 8) & 0xf8;
|
|
|
|
efifb_defined.red.offset = screen_info.red_pos;
|
|
efifb_defined.red.length = screen_info.red_size;
|
|
efifb_defined.green.offset = screen_info.green_pos;
|
|
efifb_defined.green.length = screen_info.green_size;
|
|
efifb_defined.blue.offset = screen_info.blue_pos;
|
|
efifb_defined.blue.length = screen_info.blue_size;
|
|
efifb_defined.transp.offset = screen_info.rsvd_pos;
|
|
efifb_defined.transp.length = screen_info.rsvd_size;
|
|
|
|
pr_info("efifb: %s: "
|
|
"size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
|
|
"Truecolor",
|
|
screen_info.rsvd_size,
|
|
screen_info.red_size,
|
|
screen_info.green_size,
|
|
screen_info.blue_size,
|
|
screen_info.rsvd_pos,
|
|
screen_info.red_pos,
|
|
screen_info.green_pos,
|
|
screen_info.blue_pos);
|
|
|
|
efifb_fix.ypanstep = 0;
|
|
efifb_fix.ywrapstep = 0;
|
|
|
|
info->fbops = &efifb_ops;
|
|
info->var = efifb_defined;
|
|
info->fix = efifb_fix;
|
|
info->flags = FBINFO_FLAG_DEFAULT | FBINFO_MISC_FIRMWARE;
|
|
|
|
orientation = drm_get_panel_orientation_quirk(efifb_defined.xres,
|
|
efifb_defined.yres);
|
|
switch (orientation) {
|
|
default:
|
|
info->fbcon_rotate_hint = FB_ROTATE_UR;
|
|
break;
|
|
case DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP:
|
|
info->fbcon_rotate_hint = FB_ROTATE_UD;
|
|
break;
|
|
case DRM_MODE_PANEL_ORIENTATION_LEFT_UP:
|
|
info->fbcon_rotate_hint = FB_ROTATE_CCW;
|
|
break;
|
|
case DRM_MODE_PANEL_ORIENTATION_RIGHT_UP:
|
|
info->fbcon_rotate_hint = FB_ROTATE_CW;
|
|
break;
|
|
}
|
|
|
|
err = sysfs_create_groups(&dev->dev.kobj, efifb_groups);
|
|
if (err) {
|
|
pr_err("efifb: cannot add sysfs attrs\n");
|
|
goto err_unmap;
|
|
}
|
|
err = fb_alloc_cmap(&info->cmap, 256, 0);
|
|
if (err < 0) {
|
|
pr_err("efifb: cannot allocate colormap\n");
|
|
goto err_groups;
|
|
}
|
|
err = register_framebuffer(info);
|
|
if (err < 0) {
|
|
pr_err("efifb: cannot register framebuffer\n");
|
|
goto err_fb_dealoc;
|
|
}
|
|
fb_info(info, "%s frame buffer device\n", info->fix.id);
|
|
return 0;
|
|
|
|
err_fb_dealoc:
|
|
fb_dealloc_cmap(&info->cmap);
|
|
err_groups:
|
|
sysfs_remove_groups(&dev->dev.kobj, efifb_groups);
|
|
err_unmap:
|
|
if (mem_flags & (EFI_MEMORY_UC | EFI_MEMORY_WC))
|
|
iounmap(info->screen_base);
|
|
else
|
|
memunmap(info->screen_base);
|
|
err_release_fb:
|
|
framebuffer_release(info);
|
|
err_release_mem:
|
|
if (request_mem_succeeded)
|
|
release_mem_region(efifb_fix.smem_start, size_total);
|
|
return err;
|
|
}
|
|
|
|
static int efifb_remove(struct platform_device *pdev)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(pdev);
|
|
|
|
unregister_framebuffer(info);
|
|
sysfs_remove_groups(&pdev->dev.kobj, efifb_groups);
|
|
framebuffer_release(info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver efifb_driver = {
|
|
.driver = {
|
|
.name = "efi-framebuffer",
|
|
},
|
|
.probe = efifb_probe,
|
|
.remove = efifb_remove,
|
|
};
|
|
|
|
builtin_platform_driver(efifb_driver);
|
|
|
|
#if defined(CONFIG_PCI)
|
|
|
|
static void record_efifb_bar_resource(struct pci_dev *dev, int idx, u64 offset)
|
|
{
|
|
u16 word;
|
|
|
|
efifb_pci_dev = dev;
|
|
|
|
pci_read_config_word(dev, PCI_COMMAND, &word);
|
|
if (!(word & PCI_COMMAND_MEMORY)) {
|
|
pci_dev_disabled = true;
|
|
dev_err(&dev->dev,
|
|
"BAR %d: assigned to efifb but device is disabled!\n",
|
|
idx);
|
|
return;
|
|
}
|
|
|
|
bar_resource = &dev->resource[idx];
|
|
bar_offset = offset;
|
|
|
|
dev_info(&dev->dev, "BAR %d: assigned to efifb\n", idx);
|
|
}
|
|
|
|
static void efifb_fixup_resources(struct pci_dev *dev)
|
|
{
|
|
u64 base = screen_info.lfb_base;
|
|
u64 size = screen_info.lfb_size;
|
|
int i;
|
|
|
|
if (efifb_pci_dev || screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
|
|
return;
|
|
|
|
if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE)
|
|
base |= (u64)screen_info.ext_lfb_base << 32;
|
|
|
|
if (!base)
|
|
return;
|
|
|
|
for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
|
|
struct resource *res = &dev->resource[i];
|
|
|
|
if (!(res->flags & IORESOURCE_MEM))
|
|
continue;
|
|
|
|
if (res->start <= base && res->end >= base + size - 1) {
|
|
record_efifb_bar_resource(dev, i, base - res->start);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY,
|
|
16, efifb_fixup_resources);
|
|
|
|
#endif
|