![Daniel Vetter](/assets/img/avatar_default.png)
UAPI Changes: - Add support for DMA-BUF HEAPS. Cross-subsystem Changes: - mipi dsi definition updates, pulled into drm-intel as well. - Add lockdep annotations for dma_resv vs mmap_sem and fs_reclaim. - Remove support for dma-buf kmap/kunmap. - Constify fb_ops in all fbdev drivers, including drm drivers and drm-core, and media as well. Core Changes: - Small cleanups to ttm. - Fix SCDC definition. - Assorted cleanups to core. - Add todo to remove load/unload hooks, and use generic fbdev emulation. - Assorted documentation updates. - Use blocking ww lock in ttm fault handler. - Remove drm_fb_helper_fbdev_setup/teardown. - Warning fixes with W=1 for atomic. - Use drm_debug_enabled() instead of drm_debug flag testing in various drivers. - Fallback to nontiled mode in fbdev emulation when not all tiles are present. (Later on reverted) - Various kconfig indentation fixes in core and drivers. - Fix freeing transactions in dp-mst correctly. - Sean Paul is steping down as core maintainer. :-( - Add lockdep annotations for atomic locks vs dma-resv. - Prevent use-after-free for a bad job in drm_scheduler. - Fill out all block sizes in the P01x and P210 definitions. - Avoid division by zero in drm/rect, and fix bounds. - Add drm/rect selftests. - Add aspect ratio and alternate clocks for HDMI 4k modes. - Add todo for drm_framebuffer_funcs and fb_create cleanup. - Drop DRM_AUTH for prime import/export ioctls. - Clear DP-MST payload id tables downstream when initializating. - Fix for DSC throughput definition. - Add extra FEC definitions. - Fix fake offset in drm_gem_object_funs.mmap. - Stop using encoder->bridge in core directly - Handle bridge chaining slightly better. - Add backlight support to drm/panel, and use it in many panel drivers. - Increase max number of y420 modes from 128 to 256, as preparation to add the new modes. Driver Changes: - Small fixes all over. - Fix documentation in vkms. - Fix mmap_sem vs dma_resv in nouveau. - Small cleanup in komeda. - Add page flip support in gma500 for psb/cdv. - Add ddc symlink in the connector sysfs directory for many drivers. - Add support for analogic an6345, and fix small bugs in it. - Add atomic modesetting support to ast. - Fix radeon fault handler VMA race. - Switch udl to use generic shmem helpers. - Unconditional vblank handling for mcde. - Miscellaneous fixes to mcde. - Tweak debug output from komeda using debugfs. - Add gamma and color transform support to komeda for DOU-IPS. - Add support for sony acx424AKP panel. - Various small cleanups to gma500. - Use generic fbdev emulation in udl, and replace udl_framebuffer with generic implementation. - Add support for Logic PD Type 28 panel. - Use drm_panel_* wrapper functions in exynos/tegra/msm. - Add devicetree bindings for generic DSI panels. - Don't include drm_pci.h directly in many drivers. - Add support for begin/end_cpu_access in udmabuf. - Stop using drm_get_pci_dev in gma500 and mga200. - Fixes to UDL damage handling, and use dma_buf_begin/end_cpu_access. - Add devfreq thermal support to panfrost. - Fix hotplug with daisy chained monitors by removing VCPI when disabling topology manager. - meson: Add support for OSD1 plane AFBC commit. - Stop displaying garbage when toggling ast primary plane on/off. - More cleanups and fixes to UDL. - Add D32 suport to komeda. - Remove globle copy of drm_dev in gma500. - Add support for Boe Himax8279d MIPI-DSI LCD panel. - Add support for ingenic JZ4770 panel. - Small null pointer deference fix in ingenic. - Remove support for the special tfp420 driver, as there is a generic way to do it. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuXvWqAysSYEJGuVH/lWMcqZwE8MFAl34lkkACgkQ/lWMcqZw E8M76g//WRYl9fWnV063s44FBVJYjGxaus0vQJSGidaPCIE6Ep6TNjXp8DVzV82M HR79P9glL02DC9B8pflioNNXdIRGSVk/FJcKVB2seFAqEFCAknvWDM/X/y+mOUpp fUeFl+Znlwx3YlM8f4Qujdbm+CbTewfbya4VAWeWd8XG2V8jfq5cmODPPlUMNenZ J6Ja+W3ph741uSIfAKaP69LVJgOcuUjXINE4SWhRk/i5QF3GIRej/A7ZjWGLQ/t2 2zUUF7EiCzhPomM40H3ddKtXb4ZjNJuc5pOD4GpxR8ciNbe2gUOHEZ5aenwYBdsU 5MwbxNKyMbKXATtn3yv3fSc4jH3DtmEKpmovONeO8ZDBrQBnxeYa3tQvfkNghA2f acoZMzYUImV+ft6DMIgpXppASvo7mQYDAbLPOGEJ9E44AL4UP00jesEjnK5FOHSR 3BEzGUnK/6QL5zFNPni8YZQ8dan4jDIno1mqIV+cQ4WCGlaKckzIWO6243Bf13b/ kROSJpgWkiK6Ngq0ofhD0MHyT/m1QnqUzWRKTJhRtPflSWRBsDZqWCQ5Vx1QlNIE /HfTNbTpXWwa+5wXbbB8TkDw5t9cQGnR+QcrEd9HgoIec7B5Re8rx9i0TJAT4N05 03RCQCecSfD8gwKd2wgaFIpFGRl9lTdLYSpffSmyL2X5a20lZhM= =b15X -----END PGP SIGNATURE----- Merge tag 'drm-misc-next-2019-12-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for v5.6: UAPI Changes: - Add support for DMA-BUF HEAPS. Cross-subsystem Changes: - mipi dsi definition updates, pulled into drm-intel as well. - Add lockdep annotations for dma_resv vs mmap_sem and fs_reclaim. - Remove support for dma-buf kmap/kunmap. - Constify fb_ops in all fbdev drivers, including drm drivers and drm-core, and media as well. Core Changes: - Small cleanups to ttm. - Fix SCDC definition. - Assorted cleanups to core. - Add todo to remove load/unload hooks, and use generic fbdev emulation. - Assorted documentation updates. - Use blocking ww lock in ttm fault handler. - Remove drm_fb_helper_fbdev_setup/teardown. - Warning fixes with W=1 for atomic. - Use drm_debug_enabled() instead of drm_debug flag testing in various drivers. - Fallback to nontiled mode in fbdev emulation when not all tiles are present. (Later on reverted) - Various kconfig indentation fixes in core and drivers. - Fix freeing transactions in dp-mst correctly. - Sean Paul is steping down as core maintainer. :-( - Add lockdep annotations for atomic locks vs dma-resv. - Prevent use-after-free for a bad job in drm_scheduler. - Fill out all block sizes in the P01x and P210 definitions. - Avoid division by zero in drm/rect, and fix bounds. - Add drm/rect selftests. - Add aspect ratio and alternate clocks for HDMI 4k modes. - Add todo for drm_framebuffer_funcs and fb_create cleanup. - Drop DRM_AUTH for prime import/export ioctls. - Clear DP-MST payload id tables downstream when initializating. - Fix for DSC throughput definition. - Add extra FEC definitions. - Fix fake offset in drm_gem_object_funs.mmap. - Stop using encoder->bridge in core directly - Handle bridge chaining slightly better. - Add backlight support to drm/panel, and use it in many panel drivers. - Increase max number of y420 modes from 128 to 256, as preparation to add the new modes. Driver Changes: - Small fixes all over. - Fix documentation in vkms. - Fix mmap_sem vs dma_resv in nouveau. - Small cleanup in komeda. - Add page flip support in gma500 for psb/cdv. - Add ddc symlink in the connector sysfs directory for many drivers. - Add support for analogic an6345, and fix small bugs in it. - Add atomic modesetting support to ast. - Fix radeon fault handler VMA race. - Switch udl to use generic shmem helpers. - Unconditional vblank handling for mcde. - Miscellaneous fixes to mcde. - Tweak debug output from komeda using debugfs. - Add gamma and color transform support to komeda for DOU-IPS. - Add support for sony acx424AKP panel. - Various small cleanups to gma500. - Use generic fbdev emulation in udl, and replace udl_framebuffer with generic implementation. - Add support for Logic PD Type 28 panel. - Use drm_panel_* wrapper functions in exynos/tegra/msm. - Add devicetree bindings for generic DSI panels. - Don't include drm_pci.h directly in many drivers. - Add support for begin/end_cpu_access in udmabuf. - Stop using drm_get_pci_dev in gma500 and mga200. - Fixes to UDL damage handling, and use dma_buf_begin/end_cpu_access. - Add devfreq thermal support to panfrost. - Fix hotplug with daisy chained monitors by removing VCPI when disabling topology manager. - meson: Add support for OSD1 plane AFBC commit. - Stop displaying garbage when toggling ast primary plane on/off. - More cleanups and fixes to UDL. - Add D32 suport to komeda. - Remove globle copy of drm_dev in gma500. - Add support for Boe Himax8279d MIPI-DSI LCD panel. - Add support for ingenic JZ4770 panel. - Small null pointer deference fix in ingenic. - Remove support for the special tfp420 driver, as there is a generic way to do it. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/ba73535a-9334-5302-2e1f-5208bd7390bd@linux.intel.com
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 use_bgrt = true;
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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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/*
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* All x86 firmwares horizontally center the image (the yoffset
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* calculations differ between boards, but xoffset is predictable).
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*/
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u32 expected_xoffset = (si->lfb_width - bmp_width) / 2;
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return bgrt_tab.image_offset_x == expected_xoffset;
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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 (!use_bgrt)
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return;
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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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if (bgrt_tab.status & 0x06) {
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pr_info("efifb: BGRT rotation bits set, 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 const 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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else if (!strcmp(this_opt, "nobgrt"))
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use_bgrt = false;
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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,
|
|
&dev_attr_height.attr,
|
|
&dev_attr_depth.attr,
|
|
NULL
|
|
};
|
|
ATTRIBUTE_GROUPS(efifb);
|
|
|
|
static bool pci_dev_disabled; /* FB base matches BAR of a disabled device */
|
|
|
|
static struct pci_dev *efifb_pci_dev; /* dev with BAR covering the efifb */
|
|
static struct resource *bar_resource;
|
|
static u64 bar_offset;
|
|
|
|
static int efifb_probe(struct platform_device *dev)
|
|
{
|
|
struct fb_info *info;
|
|
int err, orientation;
|
|
unsigned int size_vmode;
|
|
unsigned int size_remap;
|
|
unsigned int size_total;
|
|
char *option = NULL;
|
|
efi_memory_desc_t md;
|
|
|
|
if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI || pci_dev_disabled)
|
|
return -ENODEV;
|
|
|
|
if (fb_get_options("efifb", &option))
|
|
return -ENODEV;
|
|
efifb_setup(option);
|
|
|
|
/* We don't get linelength from UGA Draw Protocol, only from
|
|
* EFI Graphics Protocol. So if it's not in DMI, and it's not
|
|
* passed in from the user, we really can't use the framebuffer.
|
|
*/
|
|
if (!screen_info.lfb_linelength)
|
|
return -ENODEV;
|
|
|
|
if (!screen_info.lfb_depth)
|
|
screen_info.lfb_depth = 32;
|
|
if (!screen_info.pages)
|
|
screen_info.pages = 1;
|
|
if (!fb_base_is_valid()) {
|
|
printk(KERN_DEBUG "efifb: invalid framebuffer address\n");
|
|
return -ENODEV;
|
|
}
|
|
printk(KERN_INFO "efifb: probing for efifb\n");
|
|
|
|
/* just assume they're all unset if any are */
|
|
if (!screen_info.blue_size) {
|
|
screen_info.blue_size = 8;
|
|
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) {
|
|
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_enabled(EFI_BOOT) &&
|
|
!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.
|
|
*/
|
|
md.attribute &= EFI_MEMORY_UC | EFI_MEMORY_WC |
|
|
EFI_MEMORY_WT | EFI_MEMORY_WB;
|
|
if (md.attribute) {
|
|
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_NUM_BARS; 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
|