Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/video/console/fbcon.h -- Low level frame buffer based console driver |
| 3 | * |
| 4 | * Copyright (C) 1997 Geert Uytterhoeven |
| 5 | * |
| 6 | * This file is subject to the terms and conditions of the GNU General Public |
| 7 | * License. See the file COPYING in the main directory of this archive |
| 8 | * for more details. |
| 9 | */ |
| 10 | |
| 11 | #ifndef _VIDEO_FBCON_H |
| 12 | #define _VIDEO_FBCON_H |
| 13 | |
| 14 | #include <linux/config.h> |
| 15 | #include <linux/types.h> |
| 16 | #include <linux/vt_buffer.h> |
| 17 | #include <linux/vt_kern.h> |
| 18 | |
| 19 | #include <asm/io.h> |
| 20 | |
Antonino A. Daplas | 88fb2c6 | 2005-09-09 13:10:00 -0700 | [diff] [blame] | 21 | #define FBCON_FLAGS_INIT 1 |
| 22 | #define FBCON_FLAGS_CURSOR_TIMER 2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | |
| 24 | /* |
| 25 | * This is the interface between the low-level console driver and the |
| 26 | * low-level frame buffer device |
| 27 | */ |
| 28 | |
| 29 | struct display { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | /* Filled in by the low-level console driver */ |
Jan Beulich | 2f4516d | 2005-09-13 01:25:44 -0700 | [diff] [blame] | 31 | const u_char *fontdata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | int userfont; /* != 0 if fontdata kmalloc()ed */ |
| 33 | u_short scrollmode; /* Scroll Method */ |
Antonino A. Daplas | e4fc276 | 2005-11-08 21:39:09 -0800 | [diff] [blame] | 34 | u_short inverse; /* != 0 text black on white as default */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | short yscroll; /* Hardware scrolling */ |
| 36 | int vrows; /* number of virtual rows */ |
| 37 | int cursor_shape; |
Antonino A. Daplas | e4fc276 | 2005-11-08 21:39:09 -0800 | [diff] [blame] | 38 | int con_rotate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | u32 xres_virtual; |
| 40 | u32 yres_virtual; |
| 41 | u32 height; |
| 42 | u32 width; |
| 43 | u32 bits_per_pixel; |
| 44 | u32 grayscale; |
| 45 | u32 nonstd; |
| 46 | u32 accel_flags; |
| 47 | u32 rotate; |
| 48 | struct fb_bitfield red; |
| 49 | struct fb_bitfield green; |
| 50 | struct fb_bitfield blue; |
| 51 | struct fb_bitfield transp; |
| 52 | struct fb_videomode *mode; |
| 53 | }; |
| 54 | |
| 55 | struct fbcon_ops { |
| 56 | void (*bmove)(struct vc_data *vc, struct fb_info *info, int sy, |
| 57 | int sx, int dy, int dx, int height, int width); |
| 58 | void (*clear)(struct vc_data *vc, struct fb_info *info, int sy, |
| 59 | int sx, int height, int width); |
| 60 | void (*putcs)(struct vc_data *vc, struct fb_info *info, |
| 61 | const unsigned short *s, int count, int yy, int xx, |
| 62 | int fg, int bg); |
| 63 | void (*clear_margins)(struct vc_data *vc, struct fb_info *info, |
| 64 | int bottom_only); |
Antonino A. Daplas | b73deed | 2006-01-09 20:52:56 -0800 | [diff] [blame] | 65 | void (*cursor)(struct vc_data *vc, struct fb_info *info, int mode, |
| 66 | int softback_lines, int fg, int bg); |
Antonino A. Daplas | e4fc276 | 2005-11-08 21:39:09 -0800 | [diff] [blame] | 67 | int (*update_start)(struct fb_info *info); |
Antonino A. Daplas | b73deed | 2006-01-09 20:52:56 -0800 | [diff] [blame] | 68 | int (*rotate_font)(struct fb_info *info, struct vc_data *vc); |
Antonino A. Daplas | e4fc276 | 2005-11-08 21:39:09 -0800 | [diff] [blame] | 69 | struct fb_var_screeninfo var; /* copy of the current fb_var_screeninfo */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | struct timer_list cursor_timer; /* Cursor timer */ |
| 71 | struct fb_cursor cursor_state; |
Antonino A. Daplas | ab76720 | 2005-11-13 16:06:32 -0800 | [diff] [blame] | 72 | struct display *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | int currcon; /* Current VC. */ |
| 74 | int cursor_flash; |
| 75 | int cursor_reset; |
| 76 | int blank_state; |
| 77 | int graphics; |
| 78 | int flags; |
Antonino A. Daplas | e4fc276 | 2005-11-08 21:39:09 -0800 | [diff] [blame] | 79 | int rotate; |
| 80 | int cur_rotate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | char *cursor_data; |
Antonino A. Daplas | e4fc276 | 2005-11-08 21:39:09 -0800 | [diff] [blame] | 82 | u8 *fontbuffer; |
| 83 | u8 *fontdata; |
| 84 | u32 fd_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | }; |
| 86 | /* |
| 87 | * Attribute Decoding |
| 88 | */ |
| 89 | |
| 90 | /* Color */ |
| 91 | #define attr_fgcol(fgshift,s) \ |
| 92 | (((s) >> (fgshift)) & 0x0f) |
| 93 | #define attr_bgcol(bgshift,s) \ |
| 94 | (((s) >> (bgshift)) & 0x0f) |
| 95 | #define attr_bgcol_ec(bgshift,vc) \ |
| 96 | ((vc) ? (((vc)->vc_video_erase_char >> (bgshift)) & 0x0f) : 0) |
| 97 | #define attr_fgcol_ec(fgshift,vc) \ |
| 98 | ((vc) ? (((vc)->vc_video_erase_char >> (fgshift)) & 0x0f) : 0) |
| 99 | |
| 100 | /* Monochrome */ |
| 101 | #define attr_bold(s) \ |
| 102 | ((s) & 0x200) |
| 103 | #define attr_reverse(s) \ |
| 104 | ((s) & 0x800) |
| 105 | #define attr_underline(s) \ |
| 106 | ((s) & 0x400) |
| 107 | #define attr_blink(s) \ |
| 108 | ((s) & 0x8000) |
| 109 | |
| 110 | /* Font */ |
| 111 | #define REFCOUNT(fd) (((int *)(fd))[-1]) |
| 112 | #define FNTSIZE(fd) (((int *)(fd))[-2]) |
| 113 | #define FNTCHARCNT(fd) (((int *)(fd))[-3]) |
| 114 | #define FNTSUM(fd) (((int *)(fd))[-4]) |
| 115 | #define FONT_EXTRA_WORDS 4 |
| 116 | |
| 117 | /* |
| 118 | * Scroll Method |
| 119 | */ |
| 120 | |
| 121 | /* There are several methods fbcon can use to move text around the screen: |
| 122 | * |
| 123 | * Operation Pan Wrap |
| 124 | *--------------------------------------------- |
| 125 | * SCROLL_MOVE copyarea No No |
| 126 | * SCROLL_PAN_MOVE copyarea Yes No |
| 127 | * SCROLL_WRAP_MOVE copyarea No Yes |
| 128 | * SCROLL_REDRAW imageblit No No |
| 129 | * SCROLL_PAN_REDRAW imageblit Yes No |
| 130 | * SCROLL_WRAP_REDRAW imageblit No Yes |
| 131 | * |
| 132 | * (SCROLL_WRAP_REDRAW is not implemented yet) |
| 133 | * |
| 134 | * In general, fbcon will choose the best scrolling |
| 135 | * method based on the rule below: |
| 136 | * |
| 137 | * Pan/Wrap > accel imageblit > accel copyarea > |
| 138 | * soft imageblit > (soft copyarea) |
| 139 | * |
| 140 | * Exception to the rule: Pan + accel copyarea is |
| 141 | * preferred over Pan + accel imageblit. |
| 142 | * |
| 143 | * The above is typical for PCI/AGP cards. Unless |
| 144 | * overridden, fbcon will never use soft copyarea. |
| 145 | * |
| 146 | * If you need to override the above rule, set the |
| 147 | * appropriate flags in fb_info->flags. For example, |
| 148 | * to prefer copyarea over imageblit, set |
| 149 | * FBINFO_READS_FAST. |
| 150 | * |
| 151 | * Other notes: |
| 152 | * + use the hardware engine to move the text |
| 153 | * (hw-accelerated copyarea() and fillrect()) |
| 154 | * + use hardware-supported panning on a large virtual screen |
| 155 | * + amifb can not only pan, but also wrap the display by N lines |
| 156 | * (i.e. visible line i = physical line (i+N) % yres). |
| 157 | * + read what's already rendered on the screen and |
| 158 | * write it in a different place (this is cfb_copyarea()) |
| 159 | * + re-render the text to the screen |
| 160 | * |
| 161 | * Whether to use wrapping or panning can only be figured out at |
| 162 | * runtime (when we know whether our font height is a multiple |
| 163 | * of the pan/wrap step) |
| 164 | * |
| 165 | */ |
| 166 | |
| 167 | #define SCROLL_MOVE 0x001 |
| 168 | #define SCROLL_PAN_MOVE 0x002 |
| 169 | #define SCROLL_WRAP_MOVE 0x003 |
| 170 | #define SCROLL_REDRAW 0x004 |
| 171 | #define SCROLL_PAN_REDRAW 0x005 |
| 172 | |
| 173 | #ifdef CONFIG_FB_TILEBLITTING |
Antonino A. Daplas | b73deed | 2006-01-09 20:52:56 -0800 | [diff] [blame] | 174 | extern void fbcon_set_tileops(struct vc_data *vc, struct fb_info *info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | #endif |
| 176 | extern void fbcon_set_bitops(struct fbcon_ops *ops); |
Antonino A. Daplas | c465e05 | 2005-11-07 01:00:35 -0800 | [diff] [blame] | 177 | extern int soft_cursor(struct fb_info *info, struct fb_cursor *cursor); |
Antonino A. Daplas | 9a17917 | 2006-06-26 00:27:05 -0700 | [diff] [blame] | 178 | extern struct class *fb_class; |
Antonino A. Daplas | e4fc276 | 2005-11-08 21:39:09 -0800 | [diff] [blame] | 179 | |
| 180 | #define FBCON_ATTRIBUTE_UNDERLINE 1 |
| 181 | #define FBCON_ATTRIBUTE_REVERSE 2 |
| 182 | #define FBCON_ATTRIBUTE_BOLD 4 |
| 183 | |
| 184 | static inline int real_y(struct display *p, int ypos) |
| 185 | { |
| 186 | int rows = p->vrows; |
| 187 | |
| 188 | ypos += p->yscroll; |
| 189 | return ypos < rows ? ypos : ypos - rows; |
| 190 | } |
| 191 | |
| 192 | |
| 193 | static inline int get_attribute(struct fb_info *info, u16 c) |
| 194 | { |
| 195 | int attribute = 0; |
| 196 | |
| 197 | if (fb_get_color_depth(&info->var, &info->fix) == 1) { |
| 198 | if (attr_underline(c)) |
| 199 | attribute |= FBCON_ATTRIBUTE_UNDERLINE; |
| 200 | if (attr_reverse(c)) |
| 201 | attribute |= FBCON_ATTRIBUTE_REVERSE; |
| 202 | if (attr_bold(c)) |
| 203 | attribute |= FBCON_ATTRIBUTE_BOLD; |
| 204 | } |
| 205 | |
| 206 | return attribute; |
| 207 | } |
| 208 | |
| 209 | #define FBCON_SWAP(i,r,v) ({ \ |
| 210 | typeof(r) _r = (r); \ |
| 211 | typeof(v) _v = (v); \ |
| 212 | (void) (&_r == &_v); \ |
| 213 | (i == FB_ROTATE_UR || i == FB_ROTATE_UD) ? _r : _v; }) |
| 214 | |
Antonino A. Daplas | 6cc50e1 | 2005-11-08 21:39:11 -0800 | [diff] [blame] | 215 | #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION |
| 216 | extern void fbcon_set_rotate(struct fbcon_ops *ops); |
| 217 | #else |
Antonino A. Daplas | e4fc276 | 2005-11-08 21:39:09 -0800 | [diff] [blame] | 218 | #define fbcon_set_rotate(x) do {} while(0) |
Antonino A. Daplas | 6cc50e1 | 2005-11-08 21:39:11 -0800 | [diff] [blame] | 219 | #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */ |
Antonino A. Daplas | e4fc276 | 2005-11-08 21:39:09 -0800 | [diff] [blame] | 220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | #endif /* _VIDEO_FBCON_H */ |
Antonino A. Daplas | e4fc276 | 2005-11-08 21:39:09 -0800 | [diff] [blame] | 222 | |