From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/video/console/fbcon.h | 264 +++++++++++++++++++++++++++++++++++ 1 file changed, 264 insertions(+) create mode 100644 kernel/drivers/video/console/fbcon.h (limited to 'kernel/drivers/video/console/fbcon.h') diff --git a/kernel/drivers/video/console/fbcon.h b/kernel/drivers/video/console/fbcon.h new file mode 100644 index 000000000..6bd2e0c7f --- /dev/null +++ b/kernel/drivers/video/console/fbcon.h @@ -0,0 +1,264 @@ +/* + * linux/drivers/video/console/fbcon.h -- Low level frame buffer based console driver + * + * Copyright (C) 1997 Geert Uytterhoeven + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#ifndef _VIDEO_FBCON_H +#define _VIDEO_FBCON_H + +#include +#include +#include + +#include + +#define FBCON_FLAGS_INIT 1 +#define FBCON_FLAGS_CURSOR_TIMER 2 + + /* + * This is the interface between the low-level console driver and the + * low-level frame buffer device + */ + +struct display { + /* Filled in by the low-level console driver */ + const u_char *fontdata; + int userfont; /* != 0 if fontdata kmalloc()ed */ + u_short scrollmode; /* Scroll Method */ + u_short inverse; /* != 0 text black on white as default */ + short yscroll; /* Hardware scrolling */ + int vrows; /* number of virtual rows */ + int cursor_shape; + int con_rotate; + u32 xres_virtual; + u32 yres_virtual; + u32 height; + u32 width; + u32 bits_per_pixel; + u32 grayscale; + u32 nonstd; + u32 accel_flags; + u32 rotate; + struct fb_bitfield red; + struct fb_bitfield green; + struct fb_bitfield blue; + struct fb_bitfield transp; + const struct fb_videomode *mode; +}; + +struct fbcon_ops { + void (*bmove)(struct vc_data *vc, struct fb_info *info, int sy, + int sx, int dy, int dx, int height, int width); + void (*clear)(struct vc_data *vc, struct fb_info *info, int sy, + int sx, int height, int width); + void (*putcs)(struct vc_data *vc, struct fb_info *info, + const unsigned short *s, int count, int yy, int xx, + int fg, int bg); + void (*clear_margins)(struct vc_data *vc, struct fb_info *info, + int bottom_only); + void (*cursor)(struct vc_data *vc, struct fb_info *info, int mode, + int softback_lines, int fg, int bg); + int (*update_start)(struct fb_info *info); + int (*rotate_font)(struct fb_info *info, struct vc_data *vc); + struct fb_var_screeninfo var; /* copy of the current fb_var_screeninfo */ + struct timer_list cursor_timer; /* Cursor timer */ + struct fb_cursor cursor_state; + struct display *p; + int currcon; /* Current VC. */ + int cursor_flash; + int cursor_reset; + int blank_state; + int graphics; + int save_graphics; /* for debug enter/leave */ + int flags; + int rotate; + int cur_rotate; + char *cursor_data; + u8 *fontbuffer; + u8 *fontdata; + u8 *cursor_src; + u32 cursor_size; + u32 fd_size; +}; + /* + * Attribute Decoding + */ + +/* Color */ +#define attr_fgcol(fgshift,s) \ + (((s) >> (fgshift)) & 0x0f) +#define attr_bgcol(bgshift,s) \ + (((s) >> (bgshift)) & 0x0f) + +/* Monochrome */ +#define attr_bold(s) \ + ((s) & 0x200) +#define attr_reverse(s) \ + ((s) & 0x800) +#define attr_underline(s) \ + ((s) & 0x400) +#define attr_blink(s) \ + ((s) & 0x8000) + + +static inline int mono_col(const struct fb_info *info) +{ + __u32 max_len; + max_len = max(info->var.green.length, info->var.red.length); + max_len = max(info->var.blue.length, max_len); + return (~(0xfff << max_len)) & 0xff; +} + +static inline int attr_col_ec(int shift, struct vc_data *vc, + struct fb_info *info, int is_fg) +{ + int is_mono01; + int col; + int fg; + int bg; + + if (!vc) + return 0; + + if (vc->vc_can_do_color) + return is_fg ? attr_fgcol(shift,vc->vc_video_erase_char) + : attr_bgcol(shift,vc->vc_video_erase_char); + + if (!info) + return 0; + + col = mono_col(info); + is_mono01 = info->fix.visual == FB_VISUAL_MONO01; + + if (attr_reverse(vc->vc_video_erase_char)) { + fg = is_mono01 ? col : 0; + bg = is_mono01 ? 0 : col; + } + else { + fg = is_mono01 ? 0 : col; + bg = is_mono01 ? col : 0; + } + + return is_fg ? fg : bg; +} + +#define attr_bgcol_ec(bgshift, vc, info) attr_col_ec(bgshift, vc, info, 0) +#define attr_fgcol_ec(fgshift, vc, info) attr_col_ec(fgshift, vc, info, 1) + +/* Font */ +#define REFCOUNT(fd) (((int *)(fd))[-1]) +#define FNTSIZE(fd) (((int *)(fd))[-2]) +#define FNTCHARCNT(fd) (((int *)(fd))[-3]) +#define FNTSUM(fd) (((int *)(fd))[-4]) +#define FONT_EXTRA_WORDS 4 + + /* + * Scroll Method + */ + +/* There are several methods fbcon can use to move text around the screen: + * + * Operation Pan Wrap + *--------------------------------------------- + * SCROLL_MOVE copyarea No No + * SCROLL_PAN_MOVE copyarea Yes No + * SCROLL_WRAP_MOVE copyarea No Yes + * SCROLL_REDRAW imageblit No No + * SCROLL_PAN_REDRAW imageblit Yes No + * SCROLL_WRAP_REDRAW imageblit No Yes + * + * (SCROLL_WRAP_REDRAW is not implemented yet) + * + * In general, fbcon will choose the best scrolling + * method based on the rule below: + * + * Pan/Wrap > accel imageblit > accel copyarea > + * soft imageblit > (soft copyarea) + * + * Exception to the rule: Pan + accel copyarea is + * preferred over Pan + accel imageblit. + * + * The above is typical for PCI/AGP cards. Unless + * overridden, fbcon will never use soft copyarea. + * + * If you need to override the above rule, set the + * appropriate flags in fb_info->flags. For example, + * to prefer copyarea over imageblit, set + * FBINFO_READS_FAST. + * + * Other notes: + * + use the hardware engine to move the text + * (hw-accelerated copyarea() and fillrect()) + * + use hardware-supported panning on a large virtual screen + * + amifb can not only pan, but also wrap the display by N lines + * (i.e. visible line i = physical line (i+N) % yres). + * + read what's already rendered on the screen and + * write it in a different place (this is cfb_copyarea()) + * + re-render the text to the screen + * + * Whether to use wrapping or panning can only be figured out at + * runtime (when we know whether our font height is a multiple + * of the pan/wrap step) + * + */ + +#define SCROLL_MOVE 0x001 +#define SCROLL_PAN_MOVE 0x002 +#define SCROLL_WRAP_MOVE 0x003 +#define SCROLL_REDRAW 0x004 +#define SCROLL_PAN_REDRAW 0x005 + +#ifdef CONFIG_FB_TILEBLITTING +extern void fbcon_set_tileops(struct vc_data *vc, struct fb_info *info); +#endif +extern void fbcon_set_bitops(struct fbcon_ops *ops); +extern int soft_cursor(struct fb_info *info, struct fb_cursor *cursor); + +#define FBCON_ATTRIBUTE_UNDERLINE 1 +#define FBCON_ATTRIBUTE_REVERSE 2 +#define FBCON_ATTRIBUTE_BOLD 4 + +static inline int real_y(struct display *p, int ypos) +{ + int rows = p->vrows; + + ypos += p->yscroll; + return ypos < rows ? ypos : ypos - rows; +} + + +static inline int get_attribute(struct fb_info *info, u16 c) +{ + int attribute = 0; + + if (fb_get_color_depth(&info->var, &info->fix) == 1) { + if (attr_underline(c)) + attribute |= FBCON_ATTRIBUTE_UNDERLINE; + if (attr_reverse(c)) + attribute |= FBCON_ATTRIBUTE_REVERSE; + if (attr_bold(c)) + attribute |= FBCON_ATTRIBUTE_BOLD; + } + + return attribute; +} + +#define FBCON_SWAP(i,r,v) ({ \ + typeof(r) _r = (r); \ + typeof(v) _v = (v); \ + (void) (&_r == &_v); \ + (i == FB_ROTATE_UR || i == FB_ROTATE_UD) ? _r : _v; }) + +#ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION +extern void fbcon_set_rotate(struct fbcon_ops *ops); +#else +#define fbcon_set_rotate(x) do {} while(0) +#endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */ + +#endif /* _VIDEO_FBCON_H */ + -- cgit 1.2.3-korg