Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Copyright (C) 1991, 1992 Linus Torvalds |
| 3 | */ |
| 4 | |
| 5 | /* |
| 6 | * Hopefully this will be a rather complete VT102 implementation. |
| 7 | * |
| 8 | * Beeping thanks to John T Kohl. |
| 9 | * |
| 10 | * Virtual Consoles, Screen Blanking, Screen Dumping, Color, Graphics |
| 11 | * Chars, and VT100 enhancements by Peter MacDonald. |
| 12 | * |
| 13 | * Copy and paste function by Andrew Haylett, |
| 14 | * some enhancements by Alessandro Rubini. |
| 15 | * |
| 16 | * Code to check for different video-cards mostly by Galen Hunt, |
| 17 | * <g-hunt@ee.utah.edu> |
| 18 | * |
| 19 | * Rudimentary ISO 10646/Unicode/UTF-8 character set support by |
| 20 | * Markus Kuhn, <mskuhn@immd4.informatik.uni-erlangen.de>. |
| 21 | * |
| 22 | * Dynamic allocation of consoles, aeb@cwi.nl, May 1994 |
| 23 | * Resizing of consoles, aeb, 940926 |
| 24 | * |
| 25 | * Code for xterm like mouse click reporting by Peter Orbaek 20-Jul-94 |
| 26 | * <poe@daimi.aau.dk> |
| 27 | * |
| 28 | * User-defined bell sound, new setterm control sequences and printk |
| 29 | * redirection by Martin Mares <mj@k332.feld.cvut.cz> 19-Nov-95 |
| 30 | * |
| 31 | * APM screenblank bug fixed Takashi Manabe <manabe@roy.dsl.tutics.tut.jp> |
| 32 | * |
| 33 | * Merge with the abstract console driver by Geert Uytterhoeven |
| 34 | * <geert@linux-m68k.org>, Jan 1997. |
| 35 | * |
| 36 | * Original m68k console driver modifications by |
| 37 | * |
| 38 | * - Arno Griffioen <arno@usn.nl> |
| 39 | * - David Carter <carter@cs.bris.ac.uk> |
| 40 | * |
| 41 | * The abstract console driver provides a generic interface for a text |
| 42 | * console. It supports VGA text mode, frame buffer based graphical consoles |
| 43 | * and special graphics processors that are only accessible through some |
| 44 | * registers (e.g. a TMS340x0 GSP). |
| 45 | * |
| 46 | * The interface to the hardware is specified using a special structure |
| 47 | * (struct consw) which contains function pointers to console operations |
| 48 | * (see <linux/console.h> for more information). |
| 49 | * |
| 50 | * Support for changeable cursor shape |
| 51 | * by Pavel Machek <pavel@atrey.karlin.mff.cuni.cz>, August 1997 |
| 52 | * |
| 53 | * Ported to i386 and con_scrolldelta fixed |
| 54 | * by Emmanuel Marty <core@ggi-project.org>, April 1998 |
| 55 | * |
| 56 | * Resurrected character buffers in videoram plus lots of other trickery |
| 57 | * by Martin Mares <mj@atrey.karlin.mff.cuni.cz>, July 1998 |
| 58 | * |
| 59 | * Removed old-style timers, introduced console_timer, made timer |
Francois Cami | e1f8e87 | 2008-10-15 22:01:59 -0700 | [diff] [blame] | 60 | * deletion SMP-safe. 17Jun00, Andrew Morton |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | * |
| 62 | * Removed console_lock, enabled interrupts across all console operations |
| 63 | * 13 March 2001, Andrew Morton |
Adam Tlalka | d4328b4 | 2006-09-29 01:59:53 -0700 | [diff] [blame] | 64 | * |
| 65 | * Fixed UTF-8 mode so alternate charset modes always work according |
| 66 | * to control sequences interpreted in do_con_trol function |
| 67 | * preserving backward VT100 semigraphics compatibility, |
| 68 | * malformed UTF sequences represented as sequences of replacement glyphs, |
| 69 | * original codes or '?' as a last resort if replacement glyph is undefined |
| 70 | * by Adam Tla/lka <atlka@pg.gda.pl>, Aug 2006 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | */ |
| 72 | |
| 73 | #include <linux/module.h> |
| 74 | #include <linux/types.h> |
| 75 | #include <linux/sched.h> |
| 76 | #include <linux/tty.h> |
| 77 | #include <linux/tty_flip.h> |
| 78 | #include <linux/kernel.h> |
| 79 | #include <linux/string.h> |
| 80 | #include <linux/errno.h> |
| 81 | #include <linux/kd.h> |
| 82 | #include <linux/slab.h> |
| 83 | #include <linux/major.h> |
| 84 | #include <linux/mm.h> |
| 85 | #include <linux/console.h> |
| 86 | #include <linux/init.h> |
Matthias Kaehlcke | c831c33 | 2007-05-08 00:39:49 -0700 | [diff] [blame] | 87 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | #include <linux/vt_kern.h> |
| 89 | #include <linux/selection.h> |
| 90 | #include <linux/tiocl.h> |
| 91 | #include <linux/kbd_kern.h> |
| 92 | #include <linux/consolemap.h> |
| 93 | #include <linux/timer.h> |
| 94 | #include <linux/interrupt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | #include <linux/workqueue.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | #include <linux/pm.h> |
| 97 | #include <linux/font.h> |
| 98 | #include <linux/bitops.h> |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 99 | #include <linux/notifier.h> |
Alan Cox | d81ed10 | 2008-10-13 10:41:42 +0100 | [diff] [blame] | 100 | #include <linux/device.h> |
| 101 | #include <linux/io.h> |
Alan Cox | d81ed10 | 2008-10-13 10:41:42 +0100 | [diff] [blame] | 102 | #include <linux/uaccess.h> |
Jason Wessel | 81d4450 | 2010-08-05 09:22:30 -0500 | [diff] [blame] | 103 | #include <linux/kdb.h> |
Andy Shevchenko | 74c807c | 2010-06-15 17:24:16 +0300 | [diff] [blame] | 104 | #include <linux/ctype.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 106 | #define MAX_NR_CON_DRIVER 16 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 108 | #define CON_DRIVER_FLAG_MODULE 1 |
Antonino A. Daplas | 928e964 | 2006-10-03 01:14:49 -0700 | [diff] [blame] | 109 | #define CON_DRIVER_FLAG_INIT 2 |
| 110 | #define CON_DRIVER_FLAG_ATTR 4 |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 111 | |
| 112 | struct con_driver { |
| 113 | const struct consw *con; |
| 114 | const char *desc; |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 115 | struct device *dev; |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 116 | int node; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 117 | int first; |
| 118 | int last; |
| 119 | int flag; |
| 120 | }; |
| 121 | |
| 122 | static struct con_driver registered_con_driver[MAX_NR_CON_DRIVER]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | const struct consw *conswitchp; |
| 124 | |
| 125 | /* A bitmap for codes <32. A bit of 1 indicates that the code |
| 126 | * corresponding to that bit number invokes some special action |
| 127 | * (such as cursor movement) and should not be displayed as a |
| 128 | * glyph unless the disp_ctrl mode is explicitly enabled. |
| 129 | */ |
| 130 | #define CTRL_ACTION 0x0d00ff81 |
| 131 | #define CTRL_ALWAYS 0x0800f501 /* Cannot be overridden by disp_ctrl */ |
| 132 | |
| 133 | /* |
| 134 | * Here is the default bell parameters: 750HZ, 1/8th of a second |
| 135 | */ |
| 136 | #define DEFAULT_BELL_PITCH 750 |
| 137 | #define DEFAULT_BELL_DURATION (HZ/8) |
| 138 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | struct vc vc_cons [MAX_NR_CONSOLES]; |
| 140 | |
| 141 | #ifndef VT_SINGLE_DRIVER |
| 142 | static const struct consw *con_driver_map[MAX_NR_CONSOLES]; |
| 143 | #endif |
| 144 | |
| 145 | static int con_open(struct tty_struct *, struct file *); |
| 146 | static void vc_init(struct vc_data *vc, unsigned int rows, |
| 147 | unsigned int cols, int do_clear); |
| 148 | static void gotoxy(struct vc_data *vc, int new_x, int new_y); |
| 149 | static void save_cur(struct vc_data *vc); |
| 150 | static void reset_terminal(struct vc_data *vc, int do_clear); |
| 151 | static void con_flush_chars(struct tty_struct *tty); |
Yoichi Yuasa | 403aac9 | 2006-12-06 20:38:38 -0800 | [diff] [blame] | 152 | static int set_vesa_blanking(char __user *p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | static void set_cursor(struct vc_data *vc); |
| 154 | static void hide_cursor(struct vc_data *vc); |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 155 | static void console_callback(struct work_struct *ignored); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | static void blank_screen_t(unsigned long dummy); |
| 157 | static void set_palette(struct vc_data *vc); |
| 158 | |
| 159 | static int printable; /* Is console ready for printing? */ |
Jan Engelhardt | 77bf2ba | 2007-10-18 03:04:34 -0700 | [diff] [blame] | 160 | int default_utf8 = true; |
Antonino A. Daplas | 042f10e | 2007-05-08 00:38:09 -0700 | [diff] [blame] | 161 | module_param(default_utf8, int, S_IRUGO | S_IWUSR); |
Matthew Garrett | f6c06b6 | 2009-11-13 15:14:11 -0500 | [diff] [blame] | 162 | int global_cursor_default = -1; |
| 163 | module_param(global_cursor_default, int, S_IRUGO | S_IWUSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
Clemens Ladisch | 9ea9a88 | 2009-12-15 16:45:39 -0800 | [diff] [blame] | 165 | static int cur_default = CUR_DEFAULT; |
| 166 | module_param(cur_default, int, S_IRUGO | S_IWUSR); |
| 167 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | /* |
| 169 | * ignore_poke: don't unblank the screen when things are typed. This is |
| 170 | * mainly for the privacy of braille terminal users. |
| 171 | */ |
| 172 | static int ignore_poke; |
| 173 | |
| 174 | int do_poke_blanked_console; |
| 175 | int console_blanked; |
| 176 | |
| 177 | static int vesa_blank_mode; /* 0:none 1:suspendV 2:suspendH 3:powerdown */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | static int vesa_off_interval; |
Daniel Mack | f324edc | 2009-06-16 15:33:52 -0700 | [diff] [blame] | 179 | static int blankinterval = 10*60; |
| 180 | core_param(consoleblank, blankinterval, int, 0444); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 182 | static DECLARE_WORK(console_work, console_callback); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | |
| 184 | /* |
| 185 | * fg_console is the current virtual console, |
| 186 | * last_console is the last used one, |
| 187 | * want_console is the console we want to switch to, |
Jesse Barnes | b45cfba | 2010-08-05 09:22:30 -0500 | [diff] [blame] | 188 | * saved_* variants are for save/restore around kernel debugger enter/leave |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | */ |
| 190 | int fg_console; |
| 191 | int last_console; |
| 192 | int want_console = -1; |
Jason Wessel | fed891c | 2010-08-16 15:58:30 -0500 | [diff] [blame] | 193 | static int saved_fg_console; |
| 194 | static int saved_last_console; |
| 195 | static int saved_want_console; |
| 196 | static int saved_vc_mode; |
Jason Wessel | beed533 | 2010-08-16 15:58:31 -0500 | [diff] [blame] | 197 | static int saved_console_blanked; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
| 199 | /* |
| 200 | * For each existing display, we have a pointer to console currently visible |
| 201 | * on that display, allowing consoles other than fg_console to be refreshed |
| 202 | * appropriately. Unless the low-level driver supplies its own display_fg |
| 203 | * variable, we use this one for the "master display". |
| 204 | */ |
| 205 | static struct vc_data *master_display_fg; |
| 206 | |
| 207 | /* |
| 208 | * Unfortunately, we need to delay tty echo when we're currently writing to the |
| 209 | * console since the code is (and always was) not re-entrant, so we schedule |
| 210 | * all flip requests to process context with schedule-task() and run it from |
| 211 | * console_callback(). |
| 212 | */ |
| 213 | |
| 214 | /* |
| 215 | * For the same reason, we defer scrollback to the console callback. |
| 216 | */ |
| 217 | static int scrollback_delta; |
| 218 | |
| 219 | /* |
| 220 | * Hook so that the power management routines can (un)blank |
| 221 | * the console on our behalf. |
| 222 | */ |
| 223 | int (*console_blank_hook)(int); |
| 224 | |
Jiri Slaby | 40565f1 | 2007-02-12 00:52:31 -0800 | [diff] [blame] | 225 | static DEFINE_TIMER(console_timer, blank_screen_t, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | static int blank_state; |
| 227 | static int blank_timer_expired; |
| 228 | enum { |
| 229 | blank_off = 0, |
| 230 | blank_normal_wait, |
| 231 | blank_vesa_wait, |
| 232 | }; |
| 233 | |
| 234 | /* |
Kay Sievers | fbc92a3 | 2010-12-01 18:51:05 +0100 | [diff] [blame] | 235 | * /sys/class/tty/tty0/ |
| 236 | * |
| 237 | * the attribute 'active' contains the name of the current vc |
| 238 | * console and it supports poll() to detect vc switches |
| 239 | */ |
| 240 | static struct device *tty0dev; |
| 241 | |
| 242 | /* |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 243 | * Notifier list for console events. |
| 244 | */ |
| 245 | static ATOMIC_NOTIFIER_HEAD(vt_notifier_list); |
| 246 | |
| 247 | int register_vt_notifier(struct notifier_block *nb) |
| 248 | { |
| 249 | return atomic_notifier_chain_register(&vt_notifier_list, nb); |
| 250 | } |
| 251 | EXPORT_SYMBOL_GPL(register_vt_notifier); |
| 252 | |
| 253 | int unregister_vt_notifier(struct notifier_block *nb) |
| 254 | { |
| 255 | return atomic_notifier_chain_unregister(&vt_notifier_list, nb); |
| 256 | } |
| 257 | EXPORT_SYMBOL_GPL(unregister_vt_notifier); |
| 258 | |
| 259 | static void notify_write(struct vc_data *vc, unsigned int unicode) |
| 260 | { |
Mathias Krause | 502fcb7 | 2011-07-30 14:01:59 +0200 | [diff] [blame] | 261 | struct vt_notifier_param param = { .vc = vc, .c = unicode }; |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 262 | atomic_notifier_call_chain(&vt_notifier_list, VT_WRITE, ¶m); |
| 263 | } |
| 264 | |
| 265 | static void notify_update(struct vc_data *vc) |
| 266 | { |
| 267 | struct vt_notifier_param param = { .vc = vc }; |
| 268 | atomic_notifier_call_chain(&vt_notifier_list, VT_UPDATE, ¶m); |
| 269 | } |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 270 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | * Low-Level Functions |
| 272 | */ |
| 273 | |
| 274 | #define IS_FG(vc) ((vc)->vc_num == fg_console) |
| 275 | |
| 276 | #ifdef VT_BUF_VRAM_ONLY |
| 277 | #define DO_UPDATE(vc) 0 |
| 278 | #else |
Stefano Stabellini | f700d6e | 2008-07-23 21:29:59 -0700 | [diff] [blame] | 279 | #define DO_UPDATE(vc) (CON_IS_VISIBLE(vc) && !console_blanked) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | #endif |
| 281 | |
| 282 | static inline unsigned short *screenpos(struct vc_data *vc, int offset, int viewed) |
| 283 | { |
| 284 | unsigned short *p; |
| 285 | |
| 286 | if (!viewed) |
| 287 | p = (unsigned short *)(vc->vc_origin + offset); |
| 288 | else if (!vc->vc_sw->con_screen_pos) |
| 289 | p = (unsigned short *)(vc->vc_visible_origin + offset); |
| 290 | else |
| 291 | p = vc->vc_sw->con_screen_pos(vc, offset); |
| 292 | return p; |
| 293 | } |
| 294 | |
Alan Cox | e33ac1c | 2010-06-01 22:52:54 +0200 | [diff] [blame] | 295 | /* Called from the keyboard irq path.. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | static inline void scrolldelta(int lines) |
| 297 | { |
Alan Cox | e33ac1c | 2010-06-01 22:52:54 +0200 | [diff] [blame] | 298 | /* FIXME */ |
| 299 | /* scrolldelta needs some kind of consistency lock, but the BKL was |
| 300 | and still is not protecting versus the scheduled back end */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | scrollback_delta += lines; |
| 302 | schedule_console_callback(); |
| 303 | } |
| 304 | |
| 305 | void schedule_console_callback(void) |
| 306 | { |
| 307 | schedule_work(&console_work); |
| 308 | } |
| 309 | |
| 310 | static void scrup(struct vc_data *vc, unsigned int t, unsigned int b, int nr) |
| 311 | { |
| 312 | unsigned short *d, *s; |
| 313 | |
| 314 | if (t+nr >= b) |
| 315 | nr = b - t - 1; |
| 316 | if (b > vc->vc_rows || t >= b || nr < 1) |
| 317 | return; |
| 318 | if (CON_IS_VISIBLE(vc) && vc->vc_sw->con_scroll(vc, t, b, SM_UP, nr)) |
| 319 | return; |
| 320 | d = (unsigned short *)(vc->vc_origin + vc->vc_size_row * t); |
| 321 | s = (unsigned short *)(vc->vc_origin + vc->vc_size_row * (t + nr)); |
| 322 | scr_memmovew(d, s, (b - t - nr) * vc->vc_size_row); |
Linus Torvalds | 386f40c | 2010-06-06 20:44:04 -0700 | [diff] [blame] | 323 | scr_memsetw(d + (b - t - nr) * vc->vc_cols, vc->vc_video_erase_char, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | vc->vc_size_row * nr); |
| 325 | } |
| 326 | |
| 327 | static void scrdown(struct vc_data *vc, unsigned int t, unsigned int b, int nr) |
| 328 | { |
| 329 | unsigned short *s; |
| 330 | unsigned int step; |
| 331 | |
| 332 | if (t+nr >= b) |
| 333 | nr = b - t - 1; |
| 334 | if (b > vc->vc_rows || t >= b || nr < 1) |
| 335 | return; |
| 336 | if (CON_IS_VISIBLE(vc) && vc->vc_sw->con_scroll(vc, t, b, SM_DOWN, nr)) |
| 337 | return; |
| 338 | s = (unsigned short *)(vc->vc_origin + vc->vc_size_row * t); |
| 339 | step = vc->vc_cols * nr; |
| 340 | scr_memmovew(s + step, s, (b - t - nr) * vc->vc_size_row); |
Linus Torvalds | 93f78da | 2008-10-14 12:12:02 -0700 | [diff] [blame] | 341 | scr_memsetw(s, vc->vc_video_erase_char, 2 * step); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | } |
| 343 | |
| 344 | static void do_update_region(struct vc_data *vc, unsigned long start, int count) |
| 345 | { |
| 346 | #ifndef VT_BUF_VRAM_ONLY |
| 347 | unsigned int xx, yy, offset; |
| 348 | u16 *p; |
| 349 | |
| 350 | p = (u16 *) start; |
| 351 | if (!vc->vc_sw->con_getxy) { |
| 352 | offset = (start - vc->vc_origin) / 2; |
| 353 | xx = offset % vc->vc_cols; |
| 354 | yy = offset / vc->vc_cols; |
| 355 | } else { |
| 356 | int nxx, nyy; |
| 357 | start = vc->vc_sw->con_getxy(vc, start, &nxx, &nyy); |
| 358 | xx = nxx; yy = nyy; |
| 359 | } |
| 360 | for(;;) { |
| 361 | u16 attrib = scr_readw(p) & 0xff00; |
| 362 | int startx = xx; |
| 363 | u16 *q = p; |
| 364 | while (xx < vc->vc_cols && count) { |
| 365 | if (attrib != (scr_readw(p) & 0xff00)) { |
| 366 | if (p > q) |
| 367 | vc->vc_sw->con_putcs(vc, q, p-q, yy, startx); |
| 368 | startx = xx; |
| 369 | q = p; |
| 370 | attrib = scr_readw(p) & 0xff00; |
| 371 | } |
| 372 | p++; |
| 373 | xx++; |
| 374 | count--; |
| 375 | } |
| 376 | if (p > q) |
| 377 | vc->vc_sw->con_putcs(vc, q, p-q, yy, startx); |
| 378 | if (!count) |
| 379 | break; |
| 380 | xx = 0; |
| 381 | yy++; |
| 382 | if (vc->vc_sw->con_getxy) { |
| 383 | p = (u16 *)start; |
| 384 | start = vc->vc_sw->con_getxy(vc, start, NULL, NULL); |
| 385 | } |
| 386 | } |
| 387 | #endif |
| 388 | } |
| 389 | |
| 390 | void update_region(struct vc_data *vc, unsigned long start, int count) |
| 391 | { |
| 392 | WARN_CONSOLE_UNLOCKED(); |
| 393 | |
| 394 | if (DO_UPDATE(vc)) { |
| 395 | hide_cursor(vc); |
| 396 | do_update_region(vc, start, count); |
| 397 | set_cursor(vc); |
| 398 | } |
| 399 | } |
| 400 | |
| 401 | /* Structure of attributes is hardware-dependent */ |
| 402 | |
Jan Engelhardt | fa6ce9a | 2007-05-08 00:38:04 -0700 | [diff] [blame] | 403 | static u8 build_attr(struct vc_data *vc, u8 _color, u8 _intensity, u8 _blink, |
| 404 | u8 _underline, u8 _reverse, u8 _italic) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | { |
| 406 | if (vc->vc_sw->con_build_attr) |
Jan Engelhardt | fa6ce9a | 2007-05-08 00:38:04 -0700 | [diff] [blame] | 407 | return vc->vc_sw->con_build_attr(vc, _color, _intensity, |
| 408 | _blink, _underline, _reverse, _italic); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
| 410 | #ifndef VT_BUF_VRAM_ONLY |
| 411 | /* |
| 412 | * ++roman: I completely changed the attribute format for monochrome |
| 413 | * mode (!can_do_color). The formerly used MDA (monochrome display |
| 414 | * adapter) format didn't allow the combination of certain effects. |
| 415 | * Now the attribute is just a bit vector: |
| 416 | * Bit 0..1: intensity (0..2) |
| 417 | * Bit 2 : underline |
| 418 | * Bit 3 : reverse |
| 419 | * Bit 7 : blink |
| 420 | */ |
| 421 | { |
Jan Engelhardt | c9e587ab | 2008-04-29 00:59:46 -0700 | [diff] [blame] | 422 | u8 a = _color; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | if (!vc->vc_can_do_color) |
| 424 | return _intensity | |
Jan Engelhardt | fa6ce9a | 2007-05-08 00:38:04 -0700 | [diff] [blame] | 425 | (_italic ? 2 : 0) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | (_underline ? 4 : 0) | |
| 427 | (_reverse ? 8 : 0) | |
| 428 | (_blink ? 0x80 : 0); |
Jan Engelhardt | fa6ce9a | 2007-05-08 00:38:04 -0700 | [diff] [blame] | 429 | if (_italic) |
| 430 | a = (a & 0xF0) | vc->vc_itcolor; |
| 431 | else if (_underline) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | a = (a & 0xf0) | vc->vc_ulcolor; |
| 433 | else if (_intensity == 0) |
| 434 | a = (a & 0xf0) | vc->vc_ulcolor; |
| 435 | if (_reverse) |
| 436 | a = ((a) & 0x88) | ((((a) >> 4) | ((a) << 4)) & 0x77); |
| 437 | if (_blink) |
| 438 | a ^= 0x80; |
| 439 | if (_intensity == 2) |
| 440 | a ^= 0x08; |
| 441 | if (vc->vc_hi_font_mask == 0x100) |
| 442 | a <<= 1; |
| 443 | return a; |
| 444 | } |
| 445 | #else |
| 446 | return 0; |
| 447 | #endif |
| 448 | } |
| 449 | |
| 450 | static void update_attr(struct vc_data *vc) |
| 451 | { |
Jan Engelhardt | fa6ce9a | 2007-05-08 00:38:04 -0700 | [diff] [blame] | 452 | vc->vc_attr = build_attr(vc, vc->vc_color, vc->vc_intensity, |
| 453 | vc->vc_blink, vc->vc_underline, |
| 454 | vc->vc_reverse ^ vc->vc_decscnm, vc->vc_italic); |
| 455 | vc->vc_video_erase_char = (build_attr(vc, vc->vc_color, 1, vc->vc_blink, 0, vc->vc_decscnm, 0) << 8) | ' '; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | } |
| 457 | |
| 458 | /* Note: inverting the screen twice should revert to the original state */ |
| 459 | void invert_screen(struct vc_data *vc, int offset, int count, int viewed) |
| 460 | { |
| 461 | unsigned short *p; |
| 462 | |
| 463 | WARN_CONSOLE_UNLOCKED(); |
| 464 | |
| 465 | count /= 2; |
| 466 | p = screenpos(vc, offset, viewed); |
| 467 | if (vc->vc_sw->con_invert_region) |
| 468 | vc->vc_sw->con_invert_region(vc, p, count); |
| 469 | #ifndef VT_BUF_VRAM_ONLY |
| 470 | else { |
| 471 | u16 *q = p; |
| 472 | int cnt = count; |
| 473 | u16 a; |
| 474 | |
| 475 | if (!vc->vc_can_do_color) { |
| 476 | while (cnt--) { |
| 477 | a = scr_readw(q); |
| 478 | a ^= 0x0800; |
| 479 | scr_writew(a, q); |
| 480 | q++; |
| 481 | } |
| 482 | } else if (vc->vc_hi_font_mask == 0x100) { |
| 483 | while (cnt--) { |
| 484 | a = scr_readw(q); |
| 485 | a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | (((a) & 0x0e00) << 4); |
| 486 | scr_writew(a, q); |
| 487 | q++; |
| 488 | } |
| 489 | } else { |
| 490 | while (cnt--) { |
| 491 | a = scr_readw(q); |
| 492 | a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4); |
| 493 | scr_writew(a, q); |
| 494 | q++; |
| 495 | } |
| 496 | } |
| 497 | } |
| 498 | #endif |
| 499 | if (DO_UPDATE(vc)) |
| 500 | do_update_region(vc, (unsigned long) p, count); |
| 501 | } |
| 502 | |
| 503 | /* used by selection: complement pointer position */ |
| 504 | void complement_pos(struct vc_data *vc, int offset) |
| 505 | { |
Antonino A. Daplas | 414edcd | 2005-09-06 15:17:52 -0700 | [diff] [blame] | 506 | static int old_offset = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | static unsigned short old; |
| 508 | static unsigned short oldx, oldy; |
| 509 | |
| 510 | WARN_CONSOLE_UNLOCKED(); |
| 511 | |
Antonino A. Daplas | 414edcd | 2005-09-06 15:17:52 -0700 | [diff] [blame] | 512 | if (old_offset != -1 && old_offset >= 0 && |
| 513 | old_offset < vc->vc_screenbuf_size) { |
| 514 | scr_writew(old, screenpos(vc, old_offset, 1)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | if (DO_UPDATE(vc)) |
| 516 | vc->vc_sw->con_putc(vc, old, oldy, oldx); |
| 517 | } |
Antonino A. Daplas | 414edcd | 2005-09-06 15:17:52 -0700 | [diff] [blame] | 518 | |
| 519 | old_offset = offset; |
| 520 | |
| 521 | if (offset != -1 && offset >= 0 && |
| 522 | offset < vc->vc_screenbuf_size) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | unsigned short new; |
Antonino A. Daplas | 414edcd | 2005-09-06 15:17:52 -0700 | [diff] [blame] | 524 | unsigned short *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | p = screenpos(vc, offset, 1); |
| 526 | old = scr_readw(p); |
| 527 | new = old ^ vc->vc_complement_mask; |
| 528 | scr_writew(new, p); |
| 529 | if (DO_UPDATE(vc)) { |
| 530 | oldx = (offset >> 1) % vc->vc_cols; |
| 531 | oldy = (offset >> 1) / vc->vc_cols; |
| 532 | vc->vc_sw->con_putc(vc, new, oldy, oldx); |
| 533 | } |
| 534 | } |
Antonino A. Daplas | 414edcd | 2005-09-06 15:17:52 -0700 | [diff] [blame] | 535 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | } |
| 537 | |
| 538 | static void insert_char(struct vc_data *vc, unsigned int nr) |
| 539 | { |
Jean-François Moine | 81732c3 | 2012-09-06 19:24:13 +0200 | [diff] [blame] | 540 | unsigned short *p = (unsigned short *) vc->vc_pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | |
Nicolas Pitre | a883b70 | 2013-02-24 20:06:09 -0500 | [diff] [blame] | 542 | scr_memmovew(p + nr, p, (vc->vc_cols - vc->vc_x - nr) * 2); |
Jean-François Moine | 81732c3 | 2012-09-06 19:24:13 +0200 | [diff] [blame] | 543 | scr_memsetw(p, vc->vc_video_erase_char, nr * 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | vc->vc_need_wrap = 0; |
Jean-François Moine | 81732c3 | 2012-09-06 19:24:13 +0200 | [diff] [blame] | 545 | if (DO_UPDATE(vc)) |
| 546 | do_update_region(vc, (unsigned long) p, |
Jean-François Moine | b1a925f | 2012-11-20 17:35:41 +0100 | [diff] [blame] | 547 | vc->vc_cols - vc->vc_x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | static void delete_char(struct vc_data *vc, unsigned int nr) |
| 551 | { |
Jean-François Moine | 81732c3 | 2012-09-06 19:24:13 +0200 | [diff] [blame] | 552 | unsigned short *p = (unsigned short *) vc->vc_pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
Jean-François Moine | b1a925f | 2012-11-20 17:35:41 +0100 | [diff] [blame] | 554 | scr_memcpyw(p, p + nr, (vc->vc_cols - vc->vc_x - nr) * 2); |
Jean-François Moine | 81732c3 | 2012-09-06 19:24:13 +0200 | [diff] [blame] | 555 | scr_memsetw(p + vc->vc_cols - vc->vc_x - nr, vc->vc_video_erase_char, |
| 556 | nr * 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | vc->vc_need_wrap = 0; |
Jean-François Moine | 81732c3 | 2012-09-06 19:24:13 +0200 | [diff] [blame] | 558 | if (DO_UPDATE(vc)) |
| 559 | do_update_region(vc, (unsigned long) p, |
Jean-François Moine | b1a925f | 2012-11-20 17:35:41 +0100 | [diff] [blame] | 560 | vc->vc_cols - vc->vc_x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | } |
| 562 | |
| 563 | static int softcursor_original; |
| 564 | |
| 565 | static void add_softcursor(struct vc_data *vc) |
| 566 | { |
| 567 | int i = scr_readw((u16 *) vc->vc_pos); |
| 568 | u32 type = vc->vc_cursor_type; |
| 569 | |
| 570 | if (! (type & 0x10)) return; |
| 571 | if (softcursor_original != -1) return; |
| 572 | softcursor_original = i; |
| 573 | i |= ((type >> 8) & 0xff00 ); |
| 574 | i ^= ((type) & 0xff00 ); |
| 575 | if ((type & 0x20) && ((softcursor_original & 0x7000) == (i & 0x7000))) i ^= 0x7000; |
| 576 | if ((type & 0x40) && ((i & 0x700) == ((i & 0x7000) >> 4))) i ^= 0x0700; |
| 577 | scr_writew(i, (u16 *) vc->vc_pos); |
| 578 | if (DO_UPDATE(vc)) |
| 579 | vc->vc_sw->con_putc(vc, i, vc->vc_y, vc->vc_x); |
| 580 | } |
| 581 | |
| 582 | static void hide_softcursor(struct vc_data *vc) |
| 583 | { |
| 584 | if (softcursor_original != -1) { |
| 585 | scr_writew(softcursor_original, (u16 *)vc->vc_pos); |
| 586 | if (DO_UPDATE(vc)) |
| 587 | vc->vc_sw->con_putc(vc, softcursor_original, |
| 588 | vc->vc_y, vc->vc_x); |
| 589 | softcursor_original = -1; |
| 590 | } |
| 591 | } |
| 592 | |
| 593 | static void hide_cursor(struct vc_data *vc) |
| 594 | { |
| 595 | if (vc == sel_cons) |
| 596 | clear_selection(); |
| 597 | vc->vc_sw->con_cursor(vc, CM_ERASE); |
| 598 | hide_softcursor(vc); |
| 599 | } |
| 600 | |
| 601 | static void set_cursor(struct vc_data *vc) |
| 602 | { |
| 603 | if (!IS_FG(vc) || console_blanked || |
| 604 | vc->vc_mode == KD_GRAPHICS) |
| 605 | return; |
| 606 | if (vc->vc_deccm) { |
| 607 | if (vc == sel_cons) |
| 608 | clear_selection(); |
| 609 | add_softcursor(vc); |
| 610 | if ((vc->vc_cursor_type & 0x0f) != 1) |
| 611 | vc->vc_sw->con_cursor(vc, CM_DRAW); |
| 612 | } else |
| 613 | hide_cursor(vc); |
| 614 | } |
| 615 | |
| 616 | static void set_origin(struct vc_data *vc) |
| 617 | { |
| 618 | WARN_CONSOLE_UNLOCKED(); |
| 619 | |
| 620 | if (!CON_IS_VISIBLE(vc) || |
| 621 | !vc->vc_sw->con_set_origin || |
| 622 | !vc->vc_sw->con_set_origin(vc)) |
| 623 | vc->vc_origin = (unsigned long)vc->vc_screenbuf; |
| 624 | vc->vc_visible_origin = vc->vc_origin; |
| 625 | vc->vc_scr_end = vc->vc_origin + vc->vc_screenbuf_size; |
| 626 | vc->vc_pos = vc->vc_origin + vc->vc_size_row * vc->vc_y + 2 * vc->vc_x; |
| 627 | } |
| 628 | |
| 629 | static inline void save_screen(struct vc_data *vc) |
| 630 | { |
| 631 | WARN_CONSOLE_UNLOCKED(); |
| 632 | |
| 633 | if (vc->vc_sw->con_save_screen) |
| 634 | vc->vc_sw->con_save_screen(vc); |
| 635 | } |
| 636 | |
| 637 | /* |
| 638 | * Redrawing of screen |
| 639 | */ |
| 640 | |
Dave Airlie | 2a24830 | 2013-01-24 14:14:19 +1000 | [diff] [blame] | 641 | void clear_buffer_attributes(struct vc_data *vc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | { |
| 643 | unsigned short *p = (unsigned short *)vc->vc_origin; |
| 644 | int count = vc->vc_screenbuf_size / 2; |
| 645 | int mask = vc->vc_hi_font_mask | 0xff; |
| 646 | |
| 647 | for (; count > 0; count--, p++) { |
| 648 | scr_writew((scr_readw(p)&mask) | (vc->vc_video_erase_char & ~mask), p); |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | void redraw_screen(struct vc_data *vc, int is_switch) |
| 653 | { |
| 654 | int redraw = 0; |
| 655 | |
| 656 | WARN_CONSOLE_UNLOCKED(); |
| 657 | |
| 658 | if (!vc) { |
| 659 | /* strange ... */ |
| 660 | /* printk("redraw_screen: tty %d not allocated ??\n", new_console+1); */ |
| 661 | return; |
| 662 | } |
| 663 | |
| 664 | if (is_switch) { |
| 665 | struct vc_data *old_vc = vc_cons[fg_console].d; |
| 666 | if (old_vc == vc) |
| 667 | return; |
| 668 | if (!CON_IS_VISIBLE(vc)) |
| 669 | redraw = 1; |
| 670 | *vc->vc_display_fg = vc; |
| 671 | fg_console = vc->vc_num; |
| 672 | hide_cursor(old_vc); |
| 673 | if (!CON_IS_VISIBLE(old_vc)) { |
| 674 | save_screen(old_vc); |
| 675 | set_origin(old_vc); |
| 676 | } |
Kay Sievers | fbc92a3 | 2010-12-01 18:51:05 +0100 | [diff] [blame] | 677 | if (tty0dev) |
| 678 | sysfs_notify(&tty0dev->kobj, NULL, "active"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | } else { |
| 680 | hide_cursor(vc); |
| 681 | redraw = 1; |
| 682 | } |
| 683 | |
| 684 | if (redraw) { |
| 685 | int update; |
| 686 | int old_was_color = vc->vc_can_do_color; |
| 687 | |
| 688 | set_origin(vc); |
| 689 | update = vc->vc_sw->con_switch(vc); |
| 690 | set_palette(vc); |
| 691 | /* |
| 692 | * If console changed from mono<->color, the best we can do |
| 693 | * is to clear the buffer attributes. As it currently stands, |
| 694 | * rebuilding new attributes from the old buffer is not doable |
| 695 | * without overly complex code. |
| 696 | */ |
| 697 | if (old_was_color != vc->vc_can_do_color) { |
| 698 | update_attr(vc); |
| 699 | clear_buffer_attributes(vc); |
| 700 | } |
Jesse Barnes | 8fd4bd2 | 2010-06-23 12:56:12 -0700 | [diff] [blame] | 701 | |
| 702 | /* Forcibly update if we're panicing */ |
| 703 | if ((update && vc->vc_mode != KD_GRAPHICS) || |
| 704 | vt_force_oops_output(vc)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | do_update_region(vc, vc->vc_origin, vc->vc_screenbuf_size / 2); |
| 706 | } |
| 707 | set_cursor(vc); |
| 708 | if (is_switch) { |
| 709 | set_leds(); |
| 710 | compute_shiftstate(); |
Samuel Thibault | 8182ec4 | 2008-03-04 14:28:36 -0800 | [diff] [blame] | 711 | notify_update(vc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | } |
| 713 | } |
| 714 | |
| 715 | /* |
| 716 | * Allocation, freeing and resizing of VTs. |
| 717 | */ |
| 718 | |
| 719 | int vc_cons_allocated(unsigned int i) |
| 720 | { |
| 721 | return (i < MAX_NR_CONSOLES && vc_cons[i].d); |
| 722 | } |
| 723 | |
| 724 | static void visual_init(struct vc_data *vc, int num, int init) |
| 725 | { |
| 726 | /* ++Geert: vc->vc_sw->con_init determines console size */ |
| 727 | if (vc->vc_sw) |
| 728 | module_put(vc->vc_sw->owner); |
| 729 | vc->vc_sw = conswitchp; |
| 730 | #ifndef VT_SINGLE_DRIVER |
| 731 | if (con_driver_map[num]) |
| 732 | vc->vc_sw = con_driver_map[num]; |
| 733 | #endif |
| 734 | __module_get(vc->vc_sw->owner); |
| 735 | vc->vc_num = num; |
| 736 | vc->vc_display_fg = &master_display_fg; |
| 737 | vc->vc_uni_pagedir_loc = &vc->vc_uni_pagedir; |
| 738 | vc->vc_uni_pagedir = 0; |
| 739 | vc->vc_hi_font_mask = 0; |
| 740 | vc->vc_complement_mask = 0; |
| 741 | vc->vc_can_do_color = 0; |
Jesse Barnes | 8fd4bd2 | 2010-06-23 12:56:12 -0700 | [diff] [blame] | 742 | vc->vc_panic_force_write = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | vc->vc_sw->con_init(vc, init); |
| 744 | if (!vc->vc_complement_mask) |
| 745 | vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; |
| 746 | vc->vc_s_complement_mask = vc->vc_complement_mask; |
| 747 | vc->vc_size_row = vc->vc_cols << 1; |
| 748 | vc->vc_screenbuf_size = vc->vc_rows * vc->vc_size_row; |
| 749 | } |
| 750 | |
| 751 | int vc_allocate(unsigned int currcons) /* return 0 on success */ |
| 752 | { |
| 753 | WARN_CONSOLE_UNLOCKED(); |
| 754 | |
| 755 | if (currcons >= MAX_NR_CONSOLES) |
| 756 | return -ENXIO; |
| 757 | if (!vc_cons[currcons].d) { |
| 758 | struct vc_data *vc; |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 759 | struct vt_notifier_param param; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | |
| 761 | /* prevent users from taking too much memory */ |
| 762 | if (currcons >= MAX_NR_USER_CONSOLES && !capable(CAP_SYS_RESOURCE)) |
| 763 | return -EPERM; |
| 764 | |
| 765 | /* due to the granularity of kmalloc, we waste some memory here */ |
| 766 | /* the alloc is done in two steps, to optimize the common situation |
| 767 | of a 25x80 console (structsize=216, screenbuf_size=4000) */ |
| 768 | /* although the numbers above are not valid since long ago, the |
| 769 | point is still up-to-date and the comment still has its value |
| 770 | even if only as a historical artifact. --mj, July 1998 */ |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 771 | param.vc = vc = kzalloc(sizeof(struct vc_data), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | if (!vc) |
| 773 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | vc_cons[currcons].d = vc; |
Alan Cox | ff917ba | 2010-06-01 22:52:55 +0200 | [diff] [blame] | 775 | tty_port_init(&vc->port); |
Bernhard Walle | c2c88f1 | 2007-03-16 13:38:30 -0800 | [diff] [blame] | 776 | INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | visual_init(vc, currcons, 1); |
| 778 | if (!*vc->vc_uni_pagedir_loc) |
| 779 | con_set_default_unimap(vc); |
Johannes Weiner | 5c9228f | 2009-07-16 16:06:09 +0100 | [diff] [blame] | 780 | vc->vc_screenbuf = kmalloc(vc->vc_screenbuf_size, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | if (!vc->vc_screenbuf) { |
Jiri Slaby | 191c5f1 | 2012-11-15 09:49:56 +0100 | [diff] [blame] | 782 | tty_port_destroy(&vc->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | kfree(vc); |
| 784 | vc_cons[currcons].d = NULL; |
| 785 | return -ENOMEM; |
| 786 | } |
Matthew Garrett | f6c06b6 | 2009-11-13 15:14:11 -0500 | [diff] [blame] | 787 | |
| 788 | /* If no drivers have overridden us and the user didn't pass a |
| 789 | boot option, default to displaying the cursor */ |
| 790 | if (global_cursor_default == -1) |
| 791 | global_cursor_default = 1; |
| 792 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | vc_init(vc, vc->vc_rows, vc->vc_cols, 1); |
Kay Sievers | 4995f8e | 2009-03-09 14:18:52 +0100 | [diff] [blame] | 794 | vcs_make_sysfs(currcons); |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 795 | atomic_notifier_call_chain(&vt_notifier_list, VT_ALLOCATE, ¶m); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | } |
| 797 | return 0; |
| 798 | } |
| 799 | |
Antonino A. Daplas | e400b6e | 2007-10-16 01:29:35 -0700 | [diff] [blame] | 800 | static inline int resize_screen(struct vc_data *vc, int width, int height, |
| 801 | int user) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | { |
| 803 | /* Resizes the resolution of the display adapater */ |
| 804 | int err = 0; |
| 805 | |
| 806 | if (vc->vc_mode != KD_GRAPHICS && vc->vc_sw->con_resize) |
Antonino A. Daplas | e400b6e | 2007-10-16 01:29:35 -0700 | [diff] [blame] | 807 | err = vc->vc_sw->con_resize(vc, width, height, user); |
| 808 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | return err; |
| 810 | } |
| 811 | |
| 812 | /* |
| 813 | * Change # of rows and columns (0 means unchanged/the size of fg_console) |
| 814 | * [this is to be used together with some user program |
| 815 | * like resize that changes the hardware videomode] |
| 816 | */ |
| 817 | #define VC_RESIZE_MAXCOL (32767) |
| 818 | #define VC_RESIZE_MAXROW (32767) |
Alan Cox | 8c9a9dd | 2008-08-15 10:39:38 +0100 | [diff] [blame] | 819 | |
| 820 | /** |
| 821 | * vc_do_resize - resizing method for the tty |
| 822 | * @tty: tty being resized |
| 823 | * @real_tty: real tty (different to tty if a pty/tty pair) |
| 824 | * @vc: virtual console private data |
| 825 | * @cols: columns |
| 826 | * @lines: lines |
| 827 | * |
| 828 | * Resize a virtual console, clipping according to the actual constraints. |
| 829 | * If the caller passes a tty structure then update the termios winsize |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 830 | * information and perform any necessary signal handling. |
Alan Cox | 8c9a9dd | 2008-08-15 10:39:38 +0100 | [diff] [blame] | 831 | * |
| 832 | * Caller must hold the console semaphore. Takes the termios mutex and |
| 833 | * ctrl_lock of the tty IFF a tty is passed. |
| 834 | */ |
| 835 | |
Alan Cox | fc6f623 | 2009-01-02 13:43:17 +0000 | [diff] [blame] | 836 | static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc, |
| 837 | unsigned int cols, unsigned int lines) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | { |
| 839 | unsigned long old_origin, new_origin, new_scr_end, rlth, rrem, err = 0; |
qiaochong | 9e0ba74 | 2010-08-09 17:21:27 -0700 | [diff] [blame] | 840 | unsigned long end; |
Jiri Slaby | f2ee4ae | 2011-03-23 09:49:57 +0100 | [diff] [blame] | 841 | unsigned int old_rows, old_row_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | unsigned int new_cols, new_rows, new_row_size, new_screen_size; |
qiaochong | 9e0ba74 | 2010-08-09 17:21:27 -0700 | [diff] [blame] | 843 | unsigned int user; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | unsigned short *newscreen; |
| 845 | |
| 846 | WARN_CONSOLE_UNLOCKED(); |
| 847 | |
| 848 | if (!vc) |
| 849 | return -ENXIO; |
| 850 | |
Antonino A. Daplas | e400b6e | 2007-10-16 01:29:35 -0700 | [diff] [blame] | 851 | user = vc->vc_resize_user; |
| 852 | vc->vc_resize_user = 0; |
| 853 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | if (cols > VC_RESIZE_MAXCOL || lines > VC_RESIZE_MAXROW) |
| 855 | return -EINVAL; |
| 856 | |
| 857 | new_cols = (cols ? cols : vc->vc_cols); |
| 858 | new_rows = (lines ? lines : vc->vc_rows); |
| 859 | new_row_size = new_cols << 1; |
| 860 | new_screen_size = new_row_size * new_rows; |
| 861 | |
| 862 | if (new_cols == vc->vc_cols && new_rows == vc->vc_rows) |
| 863 | return 0; |
| 864 | |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 865 | newscreen = kmalloc(new_screen_size, GFP_USER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | if (!newscreen) |
| 867 | return -ENOMEM; |
| 868 | |
| 869 | old_rows = vc->vc_rows; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | old_row_size = vc->vc_size_row; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
Antonino A. Daplas | e400b6e | 2007-10-16 01:29:35 -0700 | [diff] [blame] | 872 | err = resize_screen(vc, new_cols, new_rows, user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | if (err) { |
| 874 | kfree(newscreen); |
| 875 | return err; |
| 876 | } |
| 877 | |
| 878 | vc->vc_rows = new_rows; |
| 879 | vc->vc_cols = new_cols; |
| 880 | vc->vc_size_row = new_row_size; |
| 881 | vc->vc_screenbuf_size = new_screen_size; |
| 882 | |
| 883 | rlth = min(old_row_size, new_row_size); |
| 884 | rrem = new_row_size - rlth; |
| 885 | old_origin = vc->vc_origin; |
| 886 | new_origin = (long) newscreen; |
| 887 | new_scr_end = new_origin + new_screen_size; |
Antonino A. Daplas | 3b41dc1 | 2005-09-09 13:04:39 -0700 | [diff] [blame] | 888 | |
| 889 | if (vc->vc_y > new_rows) { |
| 890 | if (old_rows - vc->vc_y < new_rows) { |
| 891 | /* |
| 892 | * Cursor near the bottom, copy contents from the |
| 893 | * bottom of buffer |
| 894 | */ |
| 895 | old_origin += (old_rows - new_rows) * old_row_size; |
Antonino A. Daplas | 3b41dc1 | 2005-09-09 13:04:39 -0700 | [diff] [blame] | 896 | } else { |
| 897 | /* |
| 898 | * Cursor is in no man's land, copy 1/2 screenful |
| 899 | * from the top and bottom of cursor position |
| 900 | */ |
| 901 | old_origin += (vc->vc_y - new_rows/2) * old_row_size; |
Antonino A. Daplas | 3b41dc1 | 2005-09-09 13:04:39 -0700 | [diff] [blame] | 902 | } |
Francisco Jerez | 9fc2b2d | 2010-08-22 17:37:24 +0200 | [diff] [blame] | 903 | } |
| 904 | |
| 905 | end = old_origin + old_row_size * min(old_rows, new_rows); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | |
| 907 | update_attr(vc); |
| 908 | |
Antonino A. Daplas | 3b41dc1 | 2005-09-09 13:04:39 -0700 | [diff] [blame] | 909 | while (old_origin < end) { |
| 910 | scr_memcpyw((unsigned short *) new_origin, |
| 911 | (unsigned short *) old_origin, rlth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | if (rrem) |
Antonino A. Daplas | 3b41dc1 | 2005-09-09 13:04:39 -0700 | [diff] [blame] | 913 | scr_memsetw((void *)(new_origin + rlth), |
| 914 | vc->vc_video_erase_char, rrem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | old_origin += old_row_size; |
| 916 | new_origin += new_row_size; |
| 917 | } |
| 918 | if (new_scr_end > new_origin) |
Antonino A. Daplas | 3b41dc1 | 2005-09-09 13:04:39 -0700 | [diff] [blame] | 919 | scr_memsetw((void *)new_origin, vc->vc_video_erase_char, |
| 920 | new_scr_end - new_origin); |
Johannes Weiner | 5c9228f | 2009-07-16 16:06:09 +0100 | [diff] [blame] | 921 | kfree(vc->vc_screenbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | vc->vc_screenbuf = newscreen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | vc->vc_screenbuf_size = new_screen_size; |
| 924 | set_origin(vc); |
| 925 | |
| 926 | /* do part of a reset_terminal() */ |
| 927 | vc->vc_top = 0; |
| 928 | vc->vc_bottom = vc->vc_rows; |
| 929 | gotoxy(vc, vc->vc_x, vc->vc_y); |
| 930 | save_cur(vc); |
| 931 | |
Alan Cox | 8c9a9dd | 2008-08-15 10:39:38 +0100 | [diff] [blame] | 932 | if (tty) { |
| 933 | /* Rewrite the requested winsize data with the actual |
| 934 | resulting sizes */ |
| 935 | struct winsize ws; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | memset(&ws, 0, sizeof(ws)); |
| 937 | ws.ws_row = vc->vc_rows; |
| 938 | ws.ws_col = vc->vc_cols; |
| 939 | ws.ws_ypixel = vc->vc_scan_lines; |
Alan Cox | fc6f623 | 2009-01-02 13:43:17 +0000 | [diff] [blame] | 940 | tty_do_resize(tty, &ws); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | } |
| 942 | |
| 943 | if (CON_IS_VISIBLE(vc)) |
| 944 | update_screen(vc); |
Alan Cox | 8b92e87 | 2009-09-19 13:13:24 -0700 | [diff] [blame] | 945 | vt_event_post(VT_EVENT_RESIZE, vc->vc_num, vc->vc_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | return err; |
| 947 | } |
| 948 | |
Alan Cox | 8c9a9dd | 2008-08-15 10:39:38 +0100 | [diff] [blame] | 949 | /** |
| 950 | * vc_resize - resize a VT |
| 951 | * @vc: virtual console |
| 952 | * @cols: columns |
| 953 | * @rows: rows |
| 954 | * |
| 955 | * Resize a virtual console as seen from the console end of things. We |
| 956 | * use the common vc_do_resize methods to update the structures. The |
| 957 | * caller must hold the console sem to protect console internals and |
Alan Cox | 8ce7326 | 2010-06-01 22:52:56 +0200 | [diff] [blame] | 958 | * vc->port.tty |
Alan Cox | 8c9a9dd | 2008-08-15 10:39:38 +0100 | [diff] [blame] | 959 | */ |
| 960 | |
| 961 | int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int rows) |
Alan Cox | ca9bda0 | 2006-09-29 02:00:03 -0700 | [diff] [blame] | 962 | { |
Alan Cox | 8ce7326 | 2010-06-01 22:52:56 +0200 | [diff] [blame] | 963 | return vc_do_resize(vc->port.tty, vc, cols, rows); |
Alan Cox | 8c9a9dd | 2008-08-15 10:39:38 +0100 | [diff] [blame] | 964 | } |
| 965 | |
| 966 | /** |
| 967 | * vt_resize - resize a VT |
| 968 | * @tty: tty to resize |
Alan Cox | 8c9a9dd | 2008-08-15 10:39:38 +0100 | [diff] [blame] | 969 | * @ws: winsize attributes |
| 970 | * |
| 971 | * Resize a virtual terminal. This is called by the tty layer as we |
| 972 | * register our own handler for resizing. The mutual helper does all |
| 973 | * the actual work. |
| 974 | * |
| 975 | * Takes the console sem and the called methods then take the tty |
| 976 | * termios_mutex and the tty ctrl_lock in that order. |
| 977 | */ |
Roel Kluin | da2bdf9 | 2009-01-07 18:09:15 -0800 | [diff] [blame] | 978 | static int vt_resize(struct tty_struct *tty, struct winsize *ws) |
Alan Cox | 8c9a9dd | 2008-08-15 10:39:38 +0100 | [diff] [blame] | 979 | { |
| 980 | struct vc_data *vc = tty->driver_data; |
| 981 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 983 | console_lock(); |
Alan Cox | fc6f623 | 2009-01-02 13:43:17 +0000 | [diff] [blame] | 984 | ret = vc_do_resize(tty, vc, ws->ws_col, ws->ws_row); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 985 | console_unlock(); |
Alan Cox | 8c9a9dd | 2008-08-15 10:39:38 +0100 | [diff] [blame] | 986 | return ret; |
Alan Cox | ca9bda0 | 2006-09-29 02:00:03 -0700 | [diff] [blame] | 987 | } |
| 988 | |
| 989 | void vc_deallocate(unsigned int currcons) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | { |
| 991 | WARN_CONSOLE_UNLOCKED(); |
| 992 | |
| 993 | if (vc_cons_allocated(currcons)) { |
| 994 | struct vc_data *vc = vc_cons[currcons].d; |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 995 | struct vt_notifier_param param = { .vc = vc }; |
Kay Sievers | 4995f8e | 2009-03-09 14:18:52 +0100 | [diff] [blame] | 996 | |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 997 | atomic_notifier_call_chain(&vt_notifier_list, VT_DEALLOCATE, ¶m); |
Kay Sievers | 4995f8e | 2009-03-09 14:18:52 +0100 | [diff] [blame] | 998 | vcs_remove_sysfs(currcons); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | vc->vc_sw->con_deinit(vc); |
Eric W. Biederman | bde0d2c9 | 2006-10-02 02:17:14 -0700 | [diff] [blame] | 1000 | put_pid(vc->vt_pid); |
Antonino A. Daplas | d459ec0 | 2006-07-03 00:24:20 -0700 | [diff] [blame] | 1001 | module_put(vc->vc_sw->owner); |
Johannes Weiner | 5c9228f | 2009-07-16 16:06:09 +0100 | [diff] [blame] | 1002 | kfree(vc->vc_screenbuf); |
Jiri Slaby | 191c5f1 | 2012-11-15 09:49:56 +0100 | [diff] [blame] | 1003 | if (currcons >= MIN_NR_CONSOLES) { |
| 1004 | tty_port_destroy(&vc->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | kfree(vc); |
Jiri Slaby | 191c5f1 | 2012-11-15 09:49:56 +0100 | [diff] [blame] | 1006 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | vc_cons[currcons].d = NULL; |
| 1008 | } |
| 1009 | } |
| 1010 | |
| 1011 | /* |
| 1012 | * VT102 emulator |
| 1013 | */ |
| 1014 | |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame] | 1015 | #define set_kbd(vc, x) vt_set_kbd_mode_bit((vc)->vc_num, (x)) |
| 1016 | #define clr_kbd(vc, x) vt_clr_kbd_mode_bit((vc)->vc_num, (x)) |
| 1017 | #define is_kbd(vc, x) vt_get_kbd_mode_bit((vc)->vc_num, (x)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | |
| 1019 | #define decarm VC_REPEAT |
| 1020 | #define decckm VC_CKMODE |
| 1021 | #define kbdapplic VC_APPLIC |
| 1022 | #define lnm VC_CRLF |
| 1023 | |
| 1024 | /* |
| 1025 | * this is what the terminal answers to a ESC-Z or csi0c query. |
| 1026 | */ |
| 1027 | #define VT100ID "\033[?1;2c" |
| 1028 | #define VT102ID "\033[?6c" |
| 1029 | |
| 1030 | unsigned char color_table[] = { 0, 4, 2, 6, 1, 5, 3, 7, |
| 1031 | 8,12,10,14, 9,13,11,15 }; |
| 1032 | |
| 1033 | /* the default colour table, for VGA+ colour systems */ |
| 1034 | int default_red[] = {0x00,0xaa,0x00,0xaa,0x00,0xaa,0x00,0xaa, |
| 1035 | 0x55,0xff,0x55,0xff,0x55,0xff,0x55,0xff}; |
| 1036 | int default_grn[] = {0x00,0x00,0xaa,0x55,0x00,0x00,0xaa,0xaa, |
| 1037 | 0x55,0x55,0xff,0xff,0x55,0x55,0xff,0xff}; |
| 1038 | int default_blu[] = {0x00,0x00,0x00,0x00,0xaa,0xaa,0xaa,0xaa, |
| 1039 | 0x55,0x55,0x55,0x55,0xff,0xff,0xff,0xff}; |
| 1040 | |
Jan Engelhardt | 1c2bbe6 | 2007-05-08 00:38:03 -0700 | [diff] [blame] | 1041 | module_param_array(default_red, int, NULL, S_IRUGO | S_IWUSR); |
| 1042 | module_param_array(default_grn, int, NULL, S_IRUGO | S_IWUSR); |
| 1043 | module_param_array(default_blu, int, NULL, S_IRUGO | S_IWUSR); |
| 1044 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | /* |
| 1046 | * gotoxy() must verify all boundaries, because the arguments |
| 1047 | * might also be negative. If the given position is out of |
| 1048 | * bounds, the cursor is placed at the nearest margin. |
| 1049 | */ |
| 1050 | static void gotoxy(struct vc_data *vc, int new_x, int new_y) |
| 1051 | { |
| 1052 | int min_y, max_y; |
| 1053 | |
| 1054 | if (new_x < 0) |
| 1055 | vc->vc_x = 0; |
| 1056 | else { |
| 1057 | if (new_x >= vc->vc_cols) |
| 1058 | vc->vc_x = vc->vc_cols - 1; |
| 1059 | else |
| 1060 | vc->vc_x = new_x; |
| 1061 | } |
| 1062 | |
| 1063 | if (vc->vc_decom) { |
| 1064 | min_y = vc->vc_top; |
| 1065 | max_y = vc->vc_bottom; |
| 1066 | } else { |
| 1067 | min_y = 0; |
| 1068 | max_y = vc->vc_rows; |
| 1069 | } |
| 1070 | if (new_y < min_y) |
| 1071 | vc->vc_y = min_y; |
| 1072 | else if (new_y >= max_y) |
| 1073 | vc->vc_y = max_y - 1; |
| 1074 | else |
| 1075 | vc->vc_y = new_y; |
| 1076 | vc->vc_pos = vc->vc_origin + vc->vc_y * vc->vc_size_row + (vc->vc_x<<1); |
| 1077 | vc->vc_need_wrap = 0; |
| 1078 | } |
| 1079 | |
| 1080 | /* for absolute user moves, when decom is set */ |
| 1081 | static void gotoxay(struct vc_data *vc, int new_x, int new_y) |
| 1082 | { |
| 1083 | gotoxy(vc, new_x, vc->vc_decom ? (vc->vc_top + new_y) : new_y); |
| 1084 | } |
| 1085 | |
| 1086 | void scrollback(struct vc_data *vc, int lines) |
| 1087 | { |
| 1088 | if (!lines) |
| 1089 | lines = vc->vc_rows / 2; |
| 1090 | scrolldelta(-lines); |
| 1091 | } |
| 1092 | |
| 1093 | void scrollfront(struct vc_data *vc, int lines) |
| 1094 | { |
| 1095 | if (!lines) |
| 1096 | lines = vc->vc_rows / 2; |
| 1097 | scrolldelta(lines); |
| 1098 | } |
| 1099 | |
| 1100 | static void lf(struct vc_data *vc) |
| 1101 | { |
| 1102 | /* don't scroll if above bottom of scrolling region, or |
| 1103 | * if below scrolling region |
| 1104 | */ |
| 1105 | if (vc->vc_y + 1 == vc->vc_bottom) |
| 1106 | scrup(vc, vc->vc_top, vc->vc_bottom, 1); |
| 1107 | else if (vc->vc_y < vc->vc_rows - 1) { |
| 1108 | vc->vc_y++; |
| 1109 | vc->vc_pos += vc->vc_size_row; |
| 1110 | } |
| 1111 | vc->vc_need_wrap = 0; |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 1112 | notify_write(vc, '\n'); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | } |
| 1114 | |
| 1115 | static void ri(struct vc_data *vc) |
| 1116 | { |
| 1117 | /* don't scroll if below top of scrolling region, or |
| 1118 | * if above scrolling region |
| 1119 | */ |
| 1120 | if (vc->vc_y == vc->vc_top) |
| 1121 | scrdown(vc, vc->vc_top, vc->vc_bottom, 1); |
| 1122 | else if (vc->vc_y > 0) { |
| 1123 | vc->vc_y--; |
| 1124 | vc->vc_pos -= vc->vc_size_row; |
| 1125 | } |
| 1126 | vc->vc_need_wrap = 0; |
| 1127 | } |
| 1128 | |
| 1129 | static inline void cr(struct vc_data *vc) |
| 1130 | { |
| 1131 | vc->vc_pos -= vc->vc_x << 1; |
| 1132 | vc->vc_need_wrap = vc->vc_x = 0; |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 1133 | notify_write(vc, '\r'); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | } |
| 1135 | |
| 1136 | static inline void bs(struct vc_data *vc) |
| 1137 | { |
| 1138 | if (vc->vc_x) { |
| 1139 | vc->vc_pos -= 2; |
| 1140 | vc->vc_x--; |
| 1141 | vc->vc_need_wrap = 0; |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 1142 | notify_write(vc, '\b'); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | } |
| 1144 | } |
| 1145 | |
| 1146 | static inline void del(struct vc_data *vc) |
| 1147 | { |
| 1148 | /* ignored */ |
| 1149 | } |
| 1150 | |
| 1151 | static void csi_J(struct vc_data *vc, int vpar) |
| 1152 | { |
| 1153 | unsigned int count; |
| 1154 | unsigned short * start; |
| 1155 | |
| 1156 | switch (vpar) { |
| 1157 | case 0: /* erase from cursor to end of display */ |
| 1158 | count = (vc->vc_scr_end - vc->vc_pos) >> 1; |
| 1159 | start = (unsigned short *)vc->vc_pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | break; |
| 1161 | case 1: /* erase from start to cursor */ |
| 1162 | count = ((vc->vc_pos - vc->vc_origin) >> 1) + 1; |
| 1163 | start = (unsigned short *)vc->vc_origin; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | break; |
Petr PÃsaÅ™ | f8df13e | 2011-04-15 10:08:08 +0200 | [diff] [blame] | 1165 | case 3: /* erase scroll-back buffer (and whole display) */ |
| 1166 | scr_memsetw(vc->vc_screenbuf, vc->vc_video_erase_char, |
| 1167 | vc->vc_screenbuf_size >> 1); |
| 1168 | set_origin(vc); |
Petr PÃsaÅ™ | f8df13e | 2011-04-15 10:08:08 +0200 | [diff] [blame] | 1169 | /* fall through */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | case 2: /* erase whole display */ |
| 1171 | count = vc->vc_cols * vc->vc_rows; |
| 1172 | start = (unsigned short *)vc->vc_origin; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | break; |
| 1174 | default: |
| 1175 | return; |
| 1176 | } |
| 1177 | scr_memsetw(start, vc->vc_video_erase_char, 2 * count); |
Jean-François Moine | 81732c3 | 2012-09-06 19:24:13 +0200 | [diff] [blame] | 1178 | if (DO_UPDATE(vc)) |
| 1179 | do_update_region(vc, (unsigned long) start, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | vc->vc_need_wrap = 0; |
| 1181 | } |
| 1182 | |
| 1183 | static void csi_K(struct vc_data *vc, int vpar) |
| 1184 | { |
| 1185 | unsigned int count; |
| 1186 | unsigned short * start; |
| 1187 | |
| 1188 | switch (vpar) { |
| 1189 | case 0: /* erase from cursor to end of line */ |
| 1190 | count = vc->vc_cols - vc->vc_x; |
| 1191 | start = (unsigned short *)vc->vc_pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | break; |
| 1193 | case 1: /* erase from start of line to cursor */ |
| 1194 | start = (unsigned short *)(vc->vc_pos - (vc->vc_x << 1)); |
| 1195 | count = vc->vc_x + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | break; |
| 1197 | case 2: /* erase whole line */ |
| 1198 | start = (unsigned short *)(vc->vc_pos - (vc->vc_x << 1)); |
| 1199 | count = vc->vc_cols; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | break; |
| 1201 | default: |
| 1202 | return; |
| 1203 | } |
| 1204 | scr_memsetw(start, vc->vc_video_erase_char, 2 * count); |
| 1205 | vc->vc_need_wrap = 0; |
Jean-François Moine | 81732c3 | 2012-09-06 19:24:13 +0200 | [diff] [blame] | 1206 | if (DO_UPDATE(vc)) |
| 1207 | do_update_region(vc, (unsigned long) start, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | } |
| 1209 | |
| 1210 | static void csi_X(struct vc_data *vc, int vpar) /* erase the following vpar positions */ |
| 1211 | { /* not vt100? */ |
| 1212 | int count; |
| 1213 | |
| 1214 | if (!vpar) |
| 1215 | vpar++; |
| 1216 | count = (vpar > vc->vc_cols - vc->vc_x) ? (vc->vc_cols - vc->vc_x) : vpar; |
| 1217 | |
| 1218 | scr_memsetw((unsigned short *)vc->vc_pos, vc->vc_video_erase_char, 2 * count); |
| 1219 | if (DO_UPDATE(vc)) |
| 1220 | vc->vc_sw->con_clear(vc, vc->vc_y, vc->vc_x, 1, count); |
| 1221 | vc->vc_need_wrap = 0; |
| 1222 | } |
| 1223 | |
| 1224 | static void default_attr(struct vc_data *vc) |
| 1225 | { |
| 1226 | vc->vc_intensity = 1; |
Jan Engelhardt | fa6ce9a | 2007-05-08 00:38:04 -0700 | [diff] [blame] | 1227 | vc->vc_italic = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | vc->vc_underline = 0; |
| 1229 | vc->vc_reverse = 0; |
| 1230 | vc->vc_blink = 0; |
| 1231 | vc->vc_color = vc->vc_def_color; |
| 1232 | } |
| 1233 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1234 | /* console_lock is held */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | static void csi_m(struct vc_data *vc) |
| 1236 | { |
| 1237 | int i; |
| 1238 | |
| 1239 | for (i = 0; i <= vc->vc_npar; i++) |
| 1240 | switch (vc->vc_par[i]) { |
| 1241 | case 0: /* all attributes off */ |
| 1242 | default_attr(vc); |
| 1243 | break; |
| 1244 | case 1: |
| 1245 | vc->vc_intensity = 2; |
| 1246 | break; |
| 1247 | case 2: |
| 1248 | vc->vc_intensity = 0; |
| 1249 | break; |
Jan Engelhardt | fa6ce9a | 2007-05-08 00:38:04 -0700 | [diff] [blame] | 1250 | case 3: |
| 1251 | vc->vc_italic = 1; |
| 1252 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1253 | case 4: |
| 1254 | vc->vc_underline = 1; |
| 1255 | break; |
| 1256 | case 5: |
| 1257 | vc->vc_blink = 1; |
| 1258 | break; |
| 1259 | case 7: |
| 1260 | vc->vc_reverse = 1; |
| 1261 | break; |
| 1262 | case 10: /* ANSI X3.64-1979 (SCO-ish?) |
| 1263 | * Select primary font, don't display |
| 1264 | * control chars if defined, don't set |
| 1265 | * bit 8 on output. |
| 1266 | */ |
| 1267 | vc->vc_translate = set_translate(vc->vc_charset == 0 |
| 1268 | ? vc->vc_G0_charset |
| 1269 | : vc->vc_G1_charset, vc); |
| 1270 | vc->vc_disp_ctrl = 0; |
| 1271 | vc->vc_toggle_meta = 0; |
| 1272 | break; |
| 1273 | case 11: /* ANSI X3.64-1979 (SCO-ish?) |
| 1274 | * Select first alternate font, lets |
| 1275 | * chars < 32 be displayed as ROM chars. |
| 1276 | */ |
| 1277 | vc->vc_translate = set_translate(IBMPC_MAP, vc); |
| 1278 | vc->vc_disp_ctrl = 1; |
| 1279 | vc->vc_toggle_meta = 0; |
| 1280 | break; |
| 1281 | case 12: /* ANSI X3.64-1979 (SCO-ish?) |
| 1282 | * Select second alternate font, toggle |
| 1283 | * high bit before displaying as ROM char. |
| 1284 | */ |
| 1285 | vc->vc_translate = set_translate(IBMPC_MAP, vc); |
| 1286 | vc->vc_disp_ctrl = 1; |
| 1287 | vc->vc_toggle_meta = 1; |
| 1288 | break; |
| 1289 | case 21: |
| 1290 | case 22: |
| 1291 | vc->vc_intensity = 1; |
| 1292 | break; |
Jan Engelhardt | fa6ce9a | 2007-05-08 00:38:04 -0700 | [diff] [blame] | 1293 | case 23: |
| 1294 | vc->vc_italic = 0; |
| 1295 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | case 24: |
| 1297 | vc->vc_underline = 0; |
| 1298 | break; |
| 1299 | case 25: |
| 1300 | vc->vc_blink = 0; |
| 1301 | break; |
| 1302 | case 27: |
| 1303 | vc->vc_reverse = 0; |
| 1304 | break; |
| 1305 | case 38: /* ANSI X3.64-1979 (SCO-ish?) |
| 1306 | * Enables underscore, white foreground |
| 1307 | * with white underscore (Linux - use |
| 1308 | * default foreground). |
| 1309 | */ |
| 1310 | vc->vc_color = (vc->vc_def_color & 0x0f) | (vc->vc_color & 0xf0); |
| 1311 | vc->vc_underline = 1; |
| 1312 | break; |
| 1313 | case 39: /* ANSI X3.64-1979 (SCO-ish?) |
| 1314 | * Disable underline option. |
| 1315 | * Reset colour to default? It did this |
| 1316 | * before... |
| 1317 | */ |
| 1318 | vc->vc_color = (vc->vc_def_color & 0x0f) | (vc->vc_color & 0xf0); |
| 1319 | vc->vc_underline = 0; |
| 1320 | break; |
| 1321 | case 49: |
| 1322 | vc->vc_color = (vc->vc_def_color & 0xf0) | (vc->vc_color & 0x0f); |
| 1323 | break; |
| 1324 | default: |
| 1325 | if (vc->vc_par[i] >= 30 && vc->vc_par[i] <= 37) |
| 1326 | vc->vc_color = color_table[vc->vc_par[i] - 30] |
| 1327 | | (vc->vc_color & 0xf0); |
| 1328 | else if (vc->vc_par[i] >= 40 && vc->vc_par[i] <= 47) |
| 1329 | vc->vc_color = (color_table[vc->vc_par[i] - 40] << 4) |
| 1330 | | (vc->vc_color & 0x0f); |
| 1331 | break; |
| 1332 | } |
| 1333 | update_attr(vc); |
| 1334 | } |
| 1335 | |
Jiri Slaby | 6732c8b | 2013-01-03 15:53:07 +0100 | [diff] [blame] | 1336 | static void respond_string(const char *p, struct tty_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | { |
| 1338 | while (*p) { |
Jiri Slaby | 6732c8b | 2013-01-03 15:53:07 +0100 | [diff] [blame] | 1339 | tty_insert_flip_char(port, *p, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1340 | p++; |
| 1341 | } |
Jiri Slaby | 6732c8b | 2013-01-03 15:53:07 +0100 | [diff] [blame] | 1342 | tty_schedule_flip(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | } |
| 1344 | |
| 1345 | static void cursor_report(struct vc_data *vc, struct tty_struct *tty) |
| 1346 | { |
| 1347 | char buf[40]; |
| 1348 | |
| 1349 | sprintf(buf, "\033[%d;%dR", vc->vc_y + (vc->vc_decom ? vc->vc_top + 1 : 1), vc->vc_x + 1); |
Jiri Slaby | 6732c8b | 2013-01-03 15:53:07 +0100 | [diff] [blame] | 1350 | respond_string(buf, tty->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | } |
| 1352 | |
| 1353 | static inline void status_report(struct tty_struct *tty) |
| 1354 | { |
Jiri Slaby | 6732c8b | 2013-01-03 15:53:07 +0100 | [diff] [blame] | 1355 | respond_string("\033[0n", tty->port); /* Terminal ok */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | } |
| 1357 | |
Jiri Slaby | 6732c8b | 2013-01-03 15:53:07 +0100 | [diff] [blame] | 1358 | static inline void respond_ID(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | { |
Jiri Slaby | 6732c8b | 2013-01-03 15:53:07 +0100 | [diff] [blame] | 1360 | respond_string(VT102ID, tty->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | } |
| 1362 | |
| 1363 | void mouse_report(struct tty_struct *tty, int butt, int mrx, int mry) |
| 1364 | { |
| 1365 | char buf[8]; |
| 1366 | |
| 1367 | sprintf(buf, "\033[M%c%c%c", (char)(' ' + butt), (char)('!' + mrx), |
| 1368 | (char)('!' + mry)); |
Jiri Slaby | 6732c8b | 2013-01-03 15:53:07 +0100 | [diff] [blame] | 1369 | respond_string(buf, tty->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | } |
| 1371 | |
| 1372 | /* invoked via ioctl(TIOCLINUX) and through set_selection */ |
| 1373 | int mouse_reporting(void) |
| 1374 | { |
| 1375 | return vc_cons[fg_console].d->vc_report_mouse; |
| 1376 | } |
| 1377 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1378 | /* console_lock is held */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | static void set_mode(struct vc_data *vc, int on_off) |
| 1380 | { |
| 1381 | int i; |
| 1382 | |
| 1383 | for (i = 0; i <= vc->vc_npar; i++) |
| 1384 | if (vc->vc_ques) { |
| 1385 | switch(vc->vc_par[i]) { /* DEC private modes set/reset */ |
| 1386 | case 1: /* Cursor keys send ^[Ox/^[[x */ |
| 1387 | if (on_off) |
| 1388 | set_kbd(vc, decckm); |
| 1389 | else |
| 1390 | clr_kbd(vc, decckm); |
| 1391 | break; |
| 1392 | case 3: /* 80/132 mode switch unimplemented */ |
| 1393 | vc->vc_deccolm = on_off; |
| 1394 | #if 0 |
| 1395 | vc_resize(deccolm ? 132 : 80, vc->vc_rows); |
| 1396 | /* this alone does not suffice; some user mode |
| 1397 | utility has to change the hardware regs */ |
| 1398 | #endif |
| 1399 | break; |
| 1400 | case 5: /* Inverted screen on/off */ |
| 1401 | if (vc->vc_decscnm != on_off) { |
| 1402 | vc->vc_decscnm = on_off; |
| 1403 | invert_screen(vc, 0, vc->vc_screenbuf_size, 0); |
| 1404 | update_attr(vc); |
| 1405 | } |
| 1406 | break; |
| 1407 | case 6: /* Origin relative/absolute */ |
| 1408 | vc->vc_decom = on_off; |
| 1409 | gotoxay(vc, 0, 0); |
| 1410 | break; |
| 1411 | case 7: /* Autowrap on/off */ |
| 1412 | vc->vc_decawm = on_off; |
| 1413 | break; |
| 1414 | case 8: /* Autorepeat on/off */ |
| 1415 | if (on_off) |
| 1416 | set_kbd(vc, decarm); |
| 1417 | else |
| 1418 | clr_kbd(vc, decarm); |
| 1419 | break; |
| 1420 | case 9: |
| 1421 | vc->vc_report_mouse = on_off ? 1 : 0; |
| 1422 | break; |
| 1423 | case 25: /* Cursor on/off */ |
| 1424 | vc->vc_deccm = on_off; |
| 1425 | break; |
| 1426 | case 1000: |
| 1427 | vc->vc_report_mouse = on_off ? 2 : 0; |
| 1428 | break; |
| 1429 | } |
| 1430 | } else { |
| 1431 | switch(vc->vc_par[i]) { /* ANSI modes set/reset */ |
| 1432 | case 3: /* Monitor (display ctrls) */ |
| 1433 | vc->vc_disp_ctrl = on_off; |
| 1434 | break; |
| 1435 | case 4: /* Insert Mode on/off */ |
| 1436 | vc->vc_decim = on_off; |
| 1437 | break; |
| 1438 | case 20: /* Lf, Enter == CrLf/Lf */ |
| 1439 | if (on_off) |
| 1440 | set_kbd(vc, lnm); |
| 1441 | else |
| 1442 | clr_kbd(vc, lnm); |
| 1443 | break; |
| 1444 | } |
| 1445 | } |
| 1446 | } |
| 1447 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1448 | /* console_lock is held */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | static void setterm_command(struct vc_data *vc) |
| 1450 | { |
| 1451 | switch(vc->vc_par[0]) { |
| 1452 | case 1: /* set color for underline mode */ |
| 1453 | if (vc->vc_can_do_color && |
| 1454 | vc->vc_par[1] < 16) { |
| 1455 | vc->vc_ulcolor = color_table[vc->vc_par[1]]; |
| 1456 | if (vc->vc_underline) |
| 1457 | update_attr(vc); |
| 1458 | } |
| 1459 | break; |
| 1460 | case 2: /* set color for half intensity mode */ |
| 1461 | if (vc->vc_can_do_color && |
| 1462 | vc->vc_par[1] < 16) { |
| 1463 | vc->vc_halfcolor = color_table[vc->vc_par[1]]; |
| 1464 | if (vc->vc_intensity == 0) |
| 1465 | update_attr(vc); |
| 1466 | } |
| 1467 | break; |
| 1468 | case 8: /* store colors as defaults */ |
| 1469 | vc->vc_def_color = vc->vc_attr; |
| 1470 | if (vc->vc_hi_font_mask == 0x100) |
| 1471 | vc->vc_def_color >>= 1; |
| 1472 | default_attr(vc); |
| 1473 | update_attr(vc); |
| 1474 | break; |
| 1475 | case 9: /* set blanking interval */ |
Daniel Mack | f324edc | 2009-06-16 15:33:52 -0700 | [diff] [blame] | 1476 | blankinterval = ((vc->vc_par[1] < 60) ? vc->vc_par[1] : 60) * 60; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1477 | poke_blanked_console(); |
| 1478 | break; |
| 1479 | case 10: /* set bell frequency in Hz */ |
| 1480 | if (vc->vc_npar >= 1) |
| 1481 | vc->vc_bell_pitch = vc->vc_par[1]; |
| 1482 | else |
| 1483 | vc->vc_bell_pitch = DEFAULT_BELL_PITCH; |
| 1484 | break; |
| 1485 | case 11: /* set bell duration in msec */ |
| 1486 | if (vc->vc_npar >= 1) |
| 1487 | vc->vc_bell_duration = (vc->vc_par[1] < 2000) ? |
| 1488 | vc->vc_par[1] * HZ / 1000 : 0; |
| 1489 | else |
| 1490 | vc->vc_bell_duration = DEFAULT_BELL_DURATION; |
| 1491 | break; |
| 1492 | case 12: /* bring specified console to the front */ |
| 1493 | if (vc->vc_par[1] >= 1 && vc_cons_allocated(vc->vc_par[1] - 1)) |
| 1494 | set_console(vc->vc_par[1] - 1); |
| 1495 | break; |
| 1496 | case 13: /* unblank the screen */ |
| 1497 | poke_blanked_console(); |
| 1498 | break; |
| 1499 | case 14: /* set vesa powerdown interval */ |
| 1500 | vesa_off_interval = ((vc->vc_par[1] < 60) ? vc->vc_par[1] : 60) * 60 * HZ; |
| 1501 | break; |
| 1502 | case 15: /* activate the previous console */ |
| 1503 | set_console(last_console); |
| 1504 | break; |
| 1505 | } |
| 1506 | } |
| 1507 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1508 | /* console_lock is held */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | static void csi_at(struct vc_data *vc, unsigned int nr) |
| 1510 | { |
| 1511 | if (nr > vc->vc_cols - vc->vc_x) |
| 1512 | nr = vc->vc_cols - vc->vc_x; |
| 1513 | else if (!nr) |
| 1514 | nr = 1; |
| 1515 | insert_char(vc, nr); |
| 1516 | } |
| 1517 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1518 | /* console_lock is held */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1519 | static void csi_L(struct vc_data *vc, unsigned int nr) |
| 1520 | { |
| 1521 | if (nr > vc->vc_rows - vc->vc_y) |
| 1522 | nr = vc->vc_rows - vc->vc_y; |
| 1523 | else if (!nr) |
| 1524 | nr = 1; |
| 1525 | scrdown(vc, vc->vc_y, vc->vc_bottom, nr); |
| 1526 | vc->vc_need_wrap = 0; |
| 1527 | } |
| 1528 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1529 | /* console_lock is held */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | static void csi_P(struct vc_data *vc, unsigned int nr) |
| 1531 | { |
| 1532 | if (nr > vc->vc_cols - vc->vc_x) |
| 1533 | nr = vc->vc_cols - vc->vc_x; |
| 1534 | else if (!nr) |
| 1535 | nr = 1; |
| 1536 | delete_char(vc, nr); |
| 1537 | } |
| 1538 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1539 | /* console_lock is held */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1540 | static void csi_M(struct vc_data *vc, unsigned int nr) |
| 1541 | { |
| 1542 | if (nr > vc->vc_rows - vc->vc_y) |
| 1543 | nr = vc->vc_rows - vc->vc_y; |
| 1544 | else if (!nr) |
| 1545 | nr=1; |
| 1546 | scrup(vc, vc->vc_y, vc->vc_bottom, nr); |
| 1547 | vc->vc_need_wrap = 0; |
| 1548 | } |
| 1549 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1550 | /* console_lock is held (except via vc_init->reset_terminal */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | static void save_cur(struct vc_data *vc) |
| 1552 | { |
| 1553 | vc->vc_saved_x = vc->vc_x; |
| 1554 | vc->vc_saved_y = vc->vc_y; |
| 1555 | vc->vc_s_intensity = vc->vc_intensity; |
Jan Engelhardt | fa6ce9a | 2007-05-08 00:38:04 -0700 | [diff] [blame] | 1556 | vc->vc_s_italic = vc->vc_italic; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | vc->vc_s_underline = vc->vc_underline; |
| 1558 | vc->vc_s_blink = vc->vc_blink; |
| 1559 | vc->vc_s_reverse = vc->vc_reverse; |
| 1560 | vc->vc_s_charset = vc->vc_charset; |
| 1561 | vc->vc_s_color = vc->vc_color; |
| 1562 | vc->vc_saved_G0 = vc->vc_G0_charset; |
| 1563 | vc->vc_saved_G1 = vc->vc_G1_charset; |
| 1564 | } |
| 1565 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1566 | /* console_lock is held */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | static void restore_cur(struct vc_data *vc) |
| 1568 | { |
| 1569 | gotoxy(vc, vc->vc_saved_x, vc->vc_saved_y); |
| 1570 | vc->vc_intensity = vc->vc_s_intensity; |
Jan Engelhardt | fa6ce9a | 2007-05-08 00:38:04 -0700 | [diff] [blame] | 1571 | vc->vc_italic = vc->vc_s_italic; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | vc->vc_underline = vc->vc_s_underline; |
| 1573 | vc->vc_blink = vc->vc_s_blink; |
| 1574 | vc->vc_reverse = vc->vc_s_reverse; |
| 1575 | vc->vc_charset = vc->vc_s_charset; |
| 1576 | vc->vc_color = vc->vc_s_color; |
| 1577 | vc->vc_G0_charset = vc->vc_saved_G0; |
| 1578 | vc->vc_G1_charset = vc->vc_saved_G1; |
| 1579 | vc->vc_translate = set_translate(vc->vc_charset ? vc->vc_G1_charset : vc->vc_G0_charset, vc); |
| 1580 | update_attr(vc); |
| 1581 | vc->vc_need_wrap = 0; |
| 1582 | } |
| 1583 | |
| 1584 | enum { ESnormal, ESesc, ESsquare, ESgetpars, ESgotpars, ESfunckey, |
| 1585 | EShash, ESsetG0, ESsetG1, ESpercent, ESignore, ESnonstd, |
| 1586 | ESpalette }; |
| 1587 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1588 | /* console_lock is held (except via vc_init()) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | static void reset_terminal(struct vc_data *vc, int do_clear) |
| 1590 | { |
| 1591 | vc->vc_top = 0; |
| 1592 | vc->vc_bottom = vc->vc_rows; |
| 1593 | vc->vc_state = ESnormal; |
| 1594 | vc->vc_ques = 0; |
| 1595 | vc->vc_translate = set_translate(LAT1_MAP, vc); |
| 1596 | vc->vc_G0_charset = LAT1_MAP; |
| 1597 | vc->vc_G1_charset = GRAF_MAP; |
| 1598 | vc->vc_charset = 0; |
| 1599 | vc->vc_need_wrap = 0; |
| 1600 | vc->vc_report_mouse = 0; |
Antonino A. Daplas | 042f10e | 2007-05-08 00:38:09 -0700 | [diff] [blame] | 1601 | vc->vc_utf = default_utf8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | vc->vc_utf_count = 0; |
| 1603 | |
| 1604 | vc->vc_disp_ctrl = 0; |
| 1605 | vc->vc_toggle_meta = 0; |
| 1606 | |
| 1607 | vc->vc_decscnm = 0; |
| 1608 | vc->vc_decom = 0; |
| 1609 | vc->vc_decawm = 1; |
Matthew Garrett | f6c06b6 | 2009-11-13 15:14:11 -0500 | [diff] [blame] | 1610 | vc->vc_deccm = global_cursor_default; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | vc->vc_decim = 0; |
| 1612 | |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame] | 1613 | vt_reset_keyboard(vc->vc_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | |
Clemens Ladisch | 9ea9a88 | 2009-12-15 16:45:39 -0800 | [diff] [blame] | 1615 | vc->vc_cursor_type = cur_default; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | vc->vc_complement_mask = vc->vc_s_complement_mask; |
| 1617 | |
| 1618 | default_attr(vc); |
| 1619 | update_attr(vc); |
| 1620 | |
| 1621 | vc->vc_tab_stop[0] = 0x01010100; |
| 1622 | vc->vc_tab_stop[1] = |
| 1623 | vc->vc_tab_stop[2] = |
| 1624 | vc->vc_tab_stop[3] = |
Wolfgang Kroworsch | a564738 | 2008-11-06 12:53:16 -0800 | [diff] [blame] | 1625 | vc->vc_tab_stop[4] = |
| 1626 | vc->vc_tab_stop[5] = |
| 1627 | vc->vc_tab_stop[6] = |
| 1628 | vc->vc_tab_stop[7] = 0x01010101; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1629 | |
| 1630 | vc->vc_bell_pitch = DEFAULT_BELL_PITCH; |
| 1631 | vc->vc_bell_duration = DEFAULT_BELL_DURATION; |
| 1632 | |
| 1633 | gotoxy(vc, 0, 0); |
| 1634 | save_cur(vc); |
| 1635 | if (do_clear) |
| 1636 | csi_J(vc, 2); |
| 1637 | } |
| 1638 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1639 | /* console_lock is held */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1640 | static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c) |
| 1641 | { |
| 1642 | /* |
| 1643 | * Control characters can be used in the _middle_ |
| 1644 | * of an escape sequence. |
| 1645 | */ |
| 1646 | switch (c) { |
| 1647 | case 0: |
| 1648 | return; |
| 1649 | case 7: |
| 1650 | if (vc->vc_bell_duration) |
| 1651 | kd_mksound(vc->vc_bell_pitch, vc->vc_bell_duration); |
| 1652 | return; |
| 1653 | case 8: |
| 1654 | bs(vc); |
| 1655 | return; |
| 1656 | case 9: |
| 1657 | vc->vc_pos -= (vc->vc_x << 1); |
| 1658 | while (vc->vc_x < vc->vc_cols - 1) { |
| 1659 | vc->vc_x++; |
| 1660 | if (vc->vc_tab_stop[vc->vc_x >> 5] & (1 << (vc->vc_x & 31))) |
| 1661 | break; |
| 1662 | } |
| 1663 | vc->vc_pos += (vc->vc_x << 1); |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 1664 | notify_write(vc, '\t'); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | return; |
| 1666 | case 10: case 11: case 12: |
| 1667 | lf(vc); |
| 1668 | if (!is_kbd(vc, lnm)) |
| 1669 | return; |
| 1670 | case 13: |
| 1671 | cr(vc); |
| 1672 | return; |
| 1673 | case 14: |
| 1674 | vc->vc_charset = 1; |
| 1675 | vc->vc_translate = set_translate(vc->vc_G1_charset, vc); |
| 1676 | vc->vc_disp_ctrl = 1; |
| 1677 | return; |
| 1678 | case 15: |
| 1679 | vc->vc_charset = 0; |
| 1680 | vc->vc_translate = set_translate(vc->vc_G0_charset, vc); |
| 1681 | vc->vc_disp_ctrl = 0; |
| 1682 | return; |
| 1683 | case 24: case 26: |
| 1684 | vc->vc_state = ESnormal; |
| 1685 | return; |
| 1686 | case 27: |
| 1687 | vc->vc_state = ESesc; |
| 1688 | return; |
| 1689 | case 127: |
| 1690 | del(vc); |
| 1691 | return; |
| 1692 | case 128+27: |
| 1693 | vc->vc_state = ESsquare; |
| 1694 | return; |
| 1695 | } |
| 1696 | switch(vc->vc_state) { |
| 1697 | case ESesc: |
| 1698 | vc->vc_state = ESnormal; |
| 1699 | switch (c) { |
| 1700 | case '[': |
| 1701 | vc->vc_state = ESsquare; |
| 1702 | return; |
| 1703 | case ']': |
| 1704 | vc->vc_state = ESnonstd; |
| 1705 | return; |
| 1706 | case '%': |
| 1707 | vc->vc_state = ESpercent; |
| 1708 | return; |
| 1709 | case 'E': |
| 1710 | cr(vc); |
| 1711 | lf(vc); |
| 1712 | return; |
| 1713 | case 'M': |
| 1714 | ri(vc); |
| 1715 | return; |
| 1716 | case 'D': |
| 1717 | lf(vc); |
| 1718 | return; |
| 1719 | case 'H': |
| 1720 | vc->vc_tab_stop[vc->vc_x >> 5] |= (1 << (vc->vc_x & 31)); |
| 1721 | return; |
| 1722 | case 'Z': |
| 1723 | respond_ID(tty); |
| 1724 | return; |
| 1725 | case '7': |
| 1726 | save_cur(vc); |
| 1727 | return; |
| 1728 | case '8': |
| 1729 | restore_cur(vc); |
| 1730 | return; |
| 1731 | case '(': |
| 1732 | vc->vc_state = ESsetG0; |
| 1733 | return; |
| 1734 | case ')': |
| 1735 | vc->vc_state = ESsetG1; |
| 1736 | return; |
| 1737 | case '#': |
| 1738 | vc->vc_state = EShash; |
| 1739 | return; |
| 1740 | case 'c': |
| 1741 | reset_terminal(vc, 1); |
| 1742 | return; |
| 1743 | case '>': /* Numeric keypad */ |
| 1744 | clr_kbd(vc, kbdapplic); |
| 1745 | return; |
| 1746 | case '=': /* Appl. keypad */ |
| 1747 | set_kbd(vc, kbdapplic); |
| 1748 | return; |
| 1749 | } |
| 1750 | return; |
| 1751 | case ESnonstd: |
| 1752 | if (c=='P') { /* palette escape sequence */ |
| 1753 | for (vc->vc_npar = 0; vc->vc_npar < NPAR; vc->vc_npar++) |
| 1754 | vc->vc_par[vc->vc_npar] = 0; |
| 1755 | vc->vc_npar = 0; |
| 1756 | vc->vc_state = ESpalette; |
| 1757 | return; |
| 1758 | } else if (c=='R') { /* reset palette */ |
| 1759 | reset_palette(vc); |
| 1760 | vc->vc_state = ESnormal; |
| 1761 | } else |
| 1762 | vc->vc_state = ESnormal; |
| 1763 | return; |
| 1764 | case ESpalette: |
Andy Shevchenko | 74c807c | 2010-06-15 17:24:16 +0300 | [diff] [blame] | 1765 | if (isxdigit(c)) { |
| 1766 | vc->vc_par[vc->vc_npar++] = hex_to_bin(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | if (vc->vc_npar == 7) { |
| 1768 | int i = vc->vc_par[0] * 3, j = 1; |
| 1769 | vc->vc_palette[i] = 16 * vc->vc_par[j++]; |
| 1770 | vc->vc_palette[i++] += vc->vc_par[j++]; |
| 1771 | vc->vc_palette[i] = 16 * vc->vc_par[j++]; |
| 1772 | vc->vc_palette[i++] += vc->vc_par[j++]; |
| 1773 | vc->vc_palette[i] = 16 * vc->vc_par[j++]; |
| 1774 | vc->vc_palette[i] += vc->vc_par[j]; |
| 1775 | set_palette(vc); |
| 1776 | vc->vc_state = ESnormal; |
| 1777 | } |
| 1778 | } else |
| 1779 | vc->vc_state = ESnormal; |
| 1780 | return; |
| 1781 | case ESsquare: |
| 1782 | for (vc->vc_npar = 0; vc->vc_npar < NPAR; vc->vc_npar++) |
| 1783 | vc->vc_par[vc->vc_npar] = 0; |
| 1784 | vc->vc_npar = 0; |
| 1785 | vc->vc_state = ESgetpars; |
| 1786 | if (c == '[') { /* Function key */ |
| 1787 | vc->vc_state=ESfunckey; |
| 1788 | return; |
| 1789 | } |
| 1790 | vc->vc_ques = (c == '?'); |
| 1791 | if (vc->vc_ques) |
| 1792 | return; |
| 1793 | case ESgetpars: |
| 1794 | if (c == ';' && vc->vc_npar < NPAR - 1) { |
| 1795 | vc->vc_npar++; |
| 1796 | return; |
| 1797 | } else if (c>='0' && c<='9') { |
| 1798 | vc->vc_par[vc->vc_npar] *= 10; |
| 1799 | vc->vc_par[vc->vc_npar] += c - '0'; |
| 1800 | return; |
| 1801 | } else |
| 1802 | vc->vc_state = ESgotpars; |
| 1803 | case ESgotpars: |
| 1804 | vc->vc_state = ESnormal; |
| 1805 | switch(c) { |
| 1806 | case 'h': |
| 1807 | set_mode(vc, 1); |
| 1808 | return; |
| 1809 | case 'l': |
| 1810 | set_mode(vc, 0); |
| 1811 | return; |
| 1812 | case 'c': |
| 1813 | if (vc->vc_ques) { |
| 1814 | if (vc->vc_par[0]) |
| 1815 | vc->vc_cursor_type = vc->vc_par[0] | (vc->vc_par[1] << 8) | (vc->vc_par[2] << 16); |
| 1816 | else |
Clemens Ladisch | 9ea9a88 | 2009-12-15 16:45:39 -0800 | [diff] [blame] | 1817 | vc->vc_cursor_type = cur_default; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1818 | return; |
| 1819 | } |
| 1820 | break; |
| 1821 | case 'm': |
| 1822 | if (vc->vc_ques) { |
| 1823 | clear_selection(); |
| 1824 | if (vc->vc_par[0]) |
| 1825 | vc->vc_complement_mask = vc->vc_par[0] << 8 | vc->vc_par[1]; |
| 1826 | else |
| 1827 | vc->vc_complement_mask = vc->vc_s_complement_mask; |
| 1828 | return; |
| 1829 | } |
| 1830 | break; |
| 1831 | case 'n': |
| 1832 | if (!vc->vc_ques) { |
| 1833 | if (vc->vc_par[0] == 5) |
| 1834 | status_report(tty); |
| 1835 | else if (vc->vc_par[0] == 6) |
| 1836 | cursor_report(vc, tty); |
| 1837 | } |
| 1838 | return; |
| 1839 | } |
| 1840 | if (vc->vc_ques) { |
| 1841 | vc->vc_ques = 0; |
| 1842 | return; |
| 1843 | } |
| 1844 | switch(c) { |
| 1845 | case 'G': case '`': |
| 1846 | if (vc->vc_par[0]) |
| 1847 | vc->vc_par[0]--; |
| 1848 | gotoxy(vc, vc->vc_par[0], vc->vc_y); |
| 1849 | return; |
| 1850 | case 'A': |
| 1851 | if (!vc->vc_par[0]) |
| 1852 | vc->vc_par[0]++; |
| 1853 | gotoxy(vc, vc->vc_x, vc->vc_y - vc->vc_par[0]); |
| 1854 | return; |
| 1855 | case 'B': case 'e': |
| 1856 | if (!vc->vc_par[0]) |
| 1857 | vc->vc_par[0]++; |
| 1858 | gotoxy(vc, vc->vc_x, vc->vc_y + vc->vc_par[0]); |
| 1859 | return; |
| 1860 | case 'C': case 'a': |
| 1861 | if (!vc->vc_par[0]) |
| 1862 | vc->vc_par[0]++; |
| 1863 | gotoxy(vc, vc->vc_x + vc->vc_par[0], vc->vc_y); |
| 1864 | return; |
| 1865 | case 'D': |
| 1866 | if (!vc->vc_par[0]) |
| 1867 | vc->vc_par[0]++; |
| 1868 | gotoxy(vc, vc->vc_x - vc->vc_par[0], vc->vc_y); |
| 1869 | return; |
| 1870 | case 'E': |
| 1871 | if (!vc->vc_par[0]) |
| 1872 | vc->vc_par[0]++; |
| 1873 | gotoxy(vc, 0, vc->vc_y + vc->vc_par[0]); |
| 1874 | return; |
| 1875 | case 'F': |
| 1876 | if (!vc->vc_par[0]) |
| 1877 | vc->vc_par[0]++; |
| 1878 | gotoxy(vc, 0, vc->vc_y - vc->vc_par[0]); |
| 1879 | return; |
| 1880 | case 'd': |
| 1881 | if (vc->vc_par[0]) |
| 1882 | vc->vc_par[0]--; |
| 1883 | gotoxay(vc, vc->vc_x ,vc->vc_par[0]); |
| 1884 | return; |
| 1885 | case 'H': case 'f': |
| 1886 | if (vc->vc_par[0]) |
| 1887 | vc->vc_par[0]--; |
| 1888 | if (vc->vc_par[1]) |
| 1889 | vc->vc_par[1]--; |
| 1890 | gotoxay(vc, vc->vc_par[1], vc->vc_par[0]); |
| 1891 | return; |
| 1892 | case 'J': |
| 1893 | csi_J(vc, vc->vc_par[0]); |
| 1894 | return; |
| 1895 | case 'K': |
| 1896 | csi_K(vc, vc->vc_par[0]); |
| 1897 | return; |
| 1898 | case 'L': |
| 1899 | csi_L(vc, vc->vc_par[0]); |
| 1900 | return; |
| 1901 | case 'M': |
| 1902 | csi_M(vc, vc->vc_par[0]); |
| 1903 | return; |
| 1904 | case 'P': |
| 1905 | csi_P(vc, vc->vc_par[0]); |
| 1906 | return; |
| 1907 | case 'c': |
| 1908 | if (!vc->vc_par[0]) |
| 1909 | respond_ID(tty); |
| 1910 | return; |
| 1911 | case 'g': |
| 1912 | if (!vc->vc_par[0]) |
| 1913 | vc->vc_tab_stop[vc->vc_x >> 5] &= ~(1 << (vc->vc_x & 31)); |
| 1914 | else if (vc->vc_par[0] == 3) { |
| 1915 | vc->vc_tab_stop[0] = |
| 1916 | vc->vc_tab_stop[1] = |
| 1917 | vc->vc_tab_stop[2] = |
| 1918 | vc->vc_tab_stop[3] = |
Wolfgang Kroworsch | a564738 | 2008-11-06 12:53:16 -0800 | [diff] [blame] | 1919 | vc->vc_tab_stop[4] = |
| 1920 | vc->vc_tab_stop[5] = |
| 1921 | vc->vc_tab_stop[6] = |
| 1922 | vc->vc_tab_stop[7] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | } |
| 1924 | return; |
| 1925 | case 'm': |
| 1926 | csi_m(vc); |
| 1927 | return; |
| 1928 | case 'q': /* DECLL - but only 3 leds */ |
| 1929 | /* map 0,1,2,3 to 0,1,2,4 */ |
| 1930 | if (vc->vc_par[0] < 4) |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame] | 1931 | vt_set_led_state(vc->vc_num, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1932 | (vc->vc_par[0] < 3) ? vc->vc_par[0] : 4); |
| 1933 | return; |
| 1934 | case 'r': |
| 1935 | if (!vc->vc_par[0]) |
| 1936 | vc->vc_par[0]++; |
| 1937 | if (!vc->vc_par[1]) |
| 1938 | vc->vc_par[1] = vc->vc_rows; |
| 1939 | /* Minimum allowed region is 2 lines */ |
| 1940 | if (vc->vc_par[0] < vc->vc_par[1] && |
| 1941 | vc->vc_par[1] <= vc->vc_rows) { |
| 1942 | vc->vc_top = vc->vc_par[0] - 1; |
| 1943 | vc->vc_bottom = vc->vc_par[1]; |
| 1944 | gotoxay(vc, 0, 0); |
| 1945 | } |
| 1946 | return; |
| 1947 | case 's': |
| 1948 | save_cur(vc); |
| 1949 | return; |
| 1950 | case 'u': |
| 1951 | restore_cur(vc); |
| 1952 | return; |
| 1953 | case 'X': |
| 1954 | csi_X(vc, vc->vc_par[0]); |
| 1955 | return; |
| 1956 | case '@': |
| 1957 | csi_at(vc, vc->vc_par[0]); |
| 1958 | return; |
| 1959 | case ']': /* setterm functions */ |
| 1960 | setterm_command(vc); |
| 1961 | return; |
| 1962 | } |
| 1963 | return; |
| 1964 | case ESpercent: |
| 1965 | vc->vc_state = ESnormal; |
| 1966 | switch (c) { |
| 1967 | case '@': /* defined in ISO 2022 */ |
| 1968 | vc->vc_utf = 0; |
| 1969 | return; |
| 1970 | case 'G': /* prelim official escape code */ |
| 1971 | case '8': /* retained for compatibility */ |
| 1972 | vc->vc_utf = 1; |
| 1973 | return; |
| 1974 | } |
| 1975 | return; |
| 1976 | case ESfunckey: |
| 1977 | vc->vc_state = ESnormal; |
| 1978 | return; |
| 1979 | case EShash: |
| 1980 | vc->vc_state = ESnormal; |
| 1981 | if (c == '8') { |
| 1982 | /* DEC screen alignment test. kludge :-) */ |
| 1983 | vc->vc_video_erase_char = |
| 1984 | (vc->vc_video_erase_char & 0xff00) | 'E'; |
| 1985 | csi_J(vc, 2); |
| 1986 | vc->vc_video_erase_char = |
| 1987 | (vc->vc_video_erase_char & 0xff00) | ' '; |
| 1988 | do_update_region(vc, vc->vc_origin, vc->vc_screenbuf_size / 2); |
| 1989 | } |
| 1990 | return; |
| 1991 | case ESsetG0: |
| 1992 | if (c == '0') |
| 1993 | vc->vc_G0_charset = GRAF_MAP; |
| 1994 | else if (c == 'B') |
| 1995 | vc->vc_G0_charset = LAT1_MAP; |
| 1996 | else if (c == 'U') |
| 1997 | vc->vc_G0_charset = IBMPC_MAP; |
| 1998 | else if (c == 'K') |
| 1999 | vc->vc_G0_charset = USER_MAP; |
| 2000 | if (vc->vc_charset == 0) |
| 2001 | vc->vc_translate = set_translate(vc->vc_G0_charset, vc); |
| 2002 | vc->vc_state = ESnormal; |
| 2003 | return; |
| 2004 | case ESsetG1: |
| 2005 | if (c == '0') |
| 2006 | vc->vc_G1_charset = GRAF_MAP; |
| 2007 | else if (c == 'B') |
| 2008 | vc->vc_G1_charset = LAT1_MAP; |
| 2009 | else if (c == 'U') |
| 2010 | vc->vc_G1_charset = IBMPC_MAP; |
| 2011 | else if (c == 'K') |
| 2012 | vc->vc_G1_charset = USER_MAP; |
| 2013 | if (vc->vc_charset == 1) |
| 2014 | vc->vc_translate = set_translate(vc->vc_G1_charset, vc); |
| 2015 | vc->vc_state = ESnormal; |
| 2016 | return; |
| 2017 | default: |
| 2018 | vc->vc_state = ESnormal; |
| 2019 | } |
| 2020 | } |
| 2021 | |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2022 | /* is_double_width() is based on the wcwidth() implementation by |
Egmont Koblinger | 1ed8a2b | 2007-06-23 17:16:27 -0700 | [diff] [blame] | 2023 | * Markus Kuhn -- 2007-05-26 (Unicode 5.0) |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2024 | * Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c |
| 2025 | */ |
| 2026 | struct interval { |
| 2027 | uint32_t first; |
| 2028 | uint32_t last; |
| 2029 | }; |
| 2030 | |
| 2031 | static int bisearch(uint32_t ucs, const struct interval *table, int max) |
| 2032 | { |
| 2033 | int min = 0; |
| 2034 | int mid; |
| 2035 | |
| 2036 | if (ucs < table[0].first || ucs > table[max].last) |
| 2037 | return 0; |
| 2038 | while (max >= min) { |
| 2039 | mid = (min + max) / 2; |
| 2040 | if (ucs > table[mid].last) |
| 2041 | min = mid + 1; |
| 2042 | else if (ucs < table[mid].first) |
| 2043 | max = mid - 1; |
| 2044 | else |
| 2045 | return 1; |
| 2046 | } |
| 2047 | return 0; |
| 2048 | } |
| 2049 | |
| 2050 | static int is_double_width(uint32_t ucs) |
| 2051 | { |
| 2052 | static const struct interval double_width[] = { |
| 2053 | { 0x1100, 0x115F }, { 0x2329, 0x232A }, { 0x2E80, 0x303E }, |
| 2054 | { 0x3040, 0xA4CF }, { 0xAC00, 0xD7A3 }, { 0xF900, 0xFAFF }, |
Egmont Koblinger | 1ed8a2b | 2007-06-23 17:16:27 -0700 | [diff] [blame] | 2055 | { 0xFE10, 0xFE19 }, { 0xFE30, 0xFE6F }, { 0xFF00, 0xFF60 }, |
| 2056 | { 0xFFE0, 0xFFE6 }, { 0x20000, 0x2FFFD }, { 0x30000, 0x3FFFD } |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2057 | }; |
Jiri Slaby | 0f11541 | 2007-07-17 04:05:21 -0700 | [diff] [blame] | 2058 | return bisearch(ucs, double_width, ARRAY_SIZE(double_width) - 1); |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2059 | } |
| 2060 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2061 | /* acquires console_lock */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2062 | static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int count) |
| 2063 | { |
| 2064 | #ifdef VT_BUF_VRAM_ONLY |
| 2065 | #define FLUSH do { } while(0); |
| 2066 | #else |
| 2067 | #define FLUSH if (draw_x >= 0) { \ |
| 2068 | vc->vc_sw->con_putcs(vc, (u16 *)draw_from, (u16 *)draw_to - (u16 *)draw_from, vc->vc_y, draw_x); \ |
| 2069 | draw_x = -1; \ |
| 2070 | } |
| 2071 | #endif |
| 2072 | |
| 2073 | int c, tc, ok, n = 0, draw_x = -1; |
| 2074 | unsigned int currcons; |
| 2075 | unsigned long draw_from = 0, draw_to = 0; |
| 2076 | struct vc_data *vc; |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2077 | unsigned char vc_attr; |
Karl Dahlke | 0341a4d | 2008-04-28 02:14:25 -0700 | [diff] [blame] | 2078 | struct vt_notifier_param param; |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2079 | uint8_t rescan; |
| 2080 | uint8_t inverse; |
| 2081 | uint8_t width; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2082 | u16 himask, charmask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2083 | |
| 2084 | if (in_interrupt()) |
| 2085 | return count; |
| 2086 | |
| 2087 | might_sleep(); |
| 2088 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2089 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2090 | vc = tty->driver_data; |
| 2091 | if (vc == NULL) { |
| 2092 | printk(KERN_ERR "vt: argh, driver_data is NULL !\n"); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2093 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2094 | return 0; |
| 2095 | } |
| 2096 | |
| 2097 | currcons = vc->vc_num; |
| 2098 | if (!vc_cons_allocated(currcons)) { |
Mandeep Singh Baines | 1ffdda9 | 2011-02-06 09:31:53 -0800 | [diff] [blame] | 2099 | /* could this happen? */ |
| 2100 | pr_warn_once("con_write: tty %d not allocated\n", currcons+1); |
| 2101 | console_unlock(); |
| 2102 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2105 | himask = vc->vc_hi_font_mask; |
| 2106 | charmask = himask ? 0x1ff : 0xff; |
| 2107 | |
| 2108 | /* undraw cursor first */ |
| 2109 | if (IS_FG(vc)) |
| 2110 | hide_cursor(vc); |
| 2111 | |
Karl Dahlke | 0341a4d | 2008-04-28 02:14:25 -0700 | [diff] [blame] | 2112 | param.vc = vc; |
| 2113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2114 | while (!tty->stopped && count) { |
| 2115 | int orig = *buf; |
| 2116 | c = orig; |
| 2117 | buf++; |
| 2118 | n++; |
| 2119 | count--; |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2120 | rescan = 0; |
| 2121 | inverse = 0; |
| 2122 | width = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2123 | |
| 2124 | /* Do no translation at all in control states */ |
| 2125 | if (vc->vc_state != ESnormal) { |
| 2126 | tc = c; |
Adam Tlalka | d4328b4 | 2006-09-29 01:59:53 -0700 | [diff] [blame] | 2127 | } else if (vc->vc_utf && !vc->vc_disp_ctrl) { |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2128 | /* Combine UTF-8 into Unicode in vc_utf_char. |
| 2129 | * vc_utf_count is the number of continuation bytes still |
| 2130 | * expected to arrive. |
| 2131 | * vc_npar is the number of continuation bytes arrived so |
| 2132 | * far |
| 2133 | */ |
Adam Tlalka | d4328b4 | 2006-09-29 01:59:53 -0700 | [diff] [blame] | 2134 | rescan_last_byte: |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2135 | if ((c & 0xc0) == 0x80) { |
| 2136 | /* Continuation byte received */ |
| 2137 | static const uint32_t utf8_length_changes[] = { 0x0000007f, 0x000007ff, 0x0000ffff, 0x001fffff, 0x03ffffff, 0x7fffffff }; |
Adam Tlalka | d4328b4 | 2006-09-29 01:59:53 -0700 | [diff] [blame] | 2138 | if (vc->vc_utf_count) { |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2139 | vc->vc_utf_char = (vc->vc_utf_char << 6) | (c & 0x3f); |
| 2140 | vc->vc_npar++; |
| 2141 | if (--vc->vc_utf_count) { |
| 2142 | /* Still need some bytes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2143 | continue; |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2144 | } |
| 2145 | /* Got a whole character */ |
| 2146 | c = vc->vc_utf_char; |
| 2147 | /* Reject overlong sequences */ |
| 2148 | if (c <= utf8_length_changes[vc->vc_npar - 1] || |
| 2149 | c > utf8_length_changes[vc->vc_npar]) |
| 2150 | c = 0xfffd; |
| 2151 | } else { |
| 2152 | /* Unexpected continuation byte */ |
| 2153 | vc->vc_utf_count = 0; |
| 2154 | c = 0xfffd; |
| 2155 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2156 | } else { |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2157 | /* Single ASCII byte or first byte of a sequence received */ |
| 2158 | if (vc->vc_utf_count) { |
| 2159 | /* Continuation byte expected */ |
| 2160 | rescan = 1; |
| 2161 | vc->vc_utf_count = 0; |
| 2162 | c = 0xfffd; |
| 2163 | } else if (c > 0x7f) { |
| 2164 | /* First byte of a multibyte sequence received */ |
| 2165 | vc->vc_npar = 0; |
| 2166 | if ((c & 0xe0) == 0xc0) { |
| 2167 | vc->vc_utf_count = 1; |
| 2168 | vc->vc_utf_char = (c & 0x1f); |
| 2169 | } else if ((c & 0xf0) == 0xe0) { |
| 2170 | vc->vc_utf_count = 2; |
| 2171 | vc->vc_utf_char = (c & 0x0f); |
| 2172 | } else if ((c & 0xf8) == 0xf0) { |
| 2173 | vc->vc_utf_count = 3; |
| 2174 | vc->vc_utf_char = (c & 0x07); |
| 2175 | } else if ((c & 0xfc) == 0xf8) { |
| 2176 | vc->vc_utf_count = 4; |
| 2177 | vc->vc_utf_char = (c & 0x03); |
| 2178 | } else if ((c & 0xfe) == 0xfc) { |
| 2179 | vc->vc_utf_count = 5; |
| 2180 | vc->vc_utf_char = (c & 0x01); |
| 2181 | } else { |
| 2182 | /* 254 and 255 are invalid */ |
| 2183 | c = 0xfffd; |
| 2184 | } |
| 2185 | if (vc->vc_utf_count) { |
| 2186 | /* Still need some bytes */ |
| 2187 | continue; |
| 2188 | } |
| 2189 | } |
| 2190 | /* Nothing to do if an ASCII byte was received */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2191 | } |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2192 | /* End of UTF-8 decoding. */ |
| 2193 | /* c is the received character, or U+FFFD for invalid sequences. */ |
| 2194 | /* Replace invalid Unicode code points with U+FFFD too */ |
| 2195 | if ((c >= 0xd800 && c <= 0xdfff) || c == 0xfffe || c == 0xffff) |
| 2196 | c = 0xfffd; |
| 2197 | tc = c; |
Adam Tlalka | d4328b4 | 2006-09-29 01:59:53 -0700 | [diff] [blame] | 2198 | } else { /* no utf or alternate charset mode */ |
David Woodhouse | a29ccf6f8 | 2008-06-03 14:59:40 +0100 | [diff] [blame] | 2199 | tc = vc_translate(vc, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2200 | } |
| 2201 | |
Karl Dahlke | 0341a4d | 2008-04-28 02:14:25 -0700 | [diff] [blame] | 2202 | param.c = tc; |
| 2203 | if (atomic_notifier_call_chain(&vt_notifier_list, VT_PREWRITE, |
| 2204 | ¶m) == NOTIFY_STOP) |
| 2205 | continue; |
| 2206 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | /* If the original code was a control character we |
| 2208 | * only allow a glyph to be displayed if the code is |
| 2209 | * not normally used (such as for cursor movement) or |
| 2210 | * if the disp_ctrl mode has been explicitly enabled. |
| 2211 | * Certain characters (as given by the CTRL_ALWAYS |
| 2212 | * bitmap) are always displayed as control characters, |
| 2213 | * as the console would be pretty useless without |
| 2214 | * them; to display an arbitrary font position use the |
| 2215 | * direct-to-font zone in UTF-8 mode. |
| 2216 | */ |
| 2217 | ok = tc && (c >= 32 || |
Adam Tlalka | d4328b4 | 2006-09-29 01:59:53 -0700 | [diff] [blame] | 2218 | !(vc->vc_disp_ctrl ? (CTRL_ALWAYS >> c) & 1 : |
| 2219 | vc->vc_utf || ((CTRL_ACTION >> c) & 1))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | && (c != 127 || vc->vc_disp_ctrl) |
| 2221 | && (c != 128+27); |
| 2222 | |
| 2223 | if (vc->vc_state == ESnormal && ok) { |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2224 | if (vc->vc_utf && !vc->vc_disp_ctrl) { |
| 2225 | if (is_double_width(c)) |
| 2226 | width = 2; |
| 2227 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2228 | /* Now try to find out how to display it */ |
| 2229 | tc = conv_uni_to_pc(vc, tc); |
Adam Tlalka | d4328b4 | 2006-09-29 01:59:53 -0700 | [diff] [blame] | 2230 | if (tc & ~charmask) { |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2231 | if (tc == -1 || tc == -2) { |
| 2232 | continue; /* nothing to display */ |
| 2233 | } |
| 2234 | /* Glyph not found */ |
Samuel Thibault | c0b7988 | 2009-04-18 22:17:17 +0200 | [diff] [blame] | 2235 | if ((!(vc->vc_utf && !vc->vc_disp_ctrl) || c < 128) && !(c & ~charmask)) { |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2236 | /* In legacy mode use the glyph we get by a 1:1 mapping. |
Egmont Koblinger | 1ed8a2b | 2007-06-23 17:16:27 -0700 | [diff] [blame] | 2237 | This would make absolutely no sense with Unicode in mind, |
| 2238 | but do this for ASCII characters since a font may lack |
| 2239 | Unicode mapping info and we don't want to end up with |
| 2240 | having question marks only. */ |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2241 | tc = c; |
| 2242 | } else { |
| 2243 | /* Display U+FFFD. If it's not found, display an inverse question mark. */ |
| 2244 | tc = conv_uni_to_pc(vc, 0xfffd); |
| 2245 | if (tc < 0) { |
| 2246 | inverse = 1; |
| 2247 | tc = conv_uni_to_pc(vc, '?'); |
| 2248 | if (tc < 0) tc = '?'; |
| 2249 | } |
| 2250 | } |
Adam Tlalka | d4328b4 | 2006-09-29 01:59:53 -0700 | [diff] [blame] | 2251 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2252 | |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2253 | if (!inverse) { |
| 2254 | vc_attr = vc->vc_attr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2255 | } else { |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2256 | /* invert vc_attr */ |
| 2257 | if (!vc->vc_can_do_color) { |
| 2258 | vc_attr = (vc->vc_attr) ^ 0x08; |
| 2259 | } else if (vc->vc_hi_font_mask == 0x100) { |
| 2260 | vc_attr = ((vc->vc_attr) & 0x11) | (((vc->vc_attr) & 0xe0) >> 4) | (((vc->vc_attr) & 0x0e) << 4); |
| 2261 | } else { |
| 2262 | vc_attr = ((vc->vc_attr) & 0x88) | (((vc->vc_attr) & 0x70) >> 4) | (((vc->vc_attr) & 0x07) << 4); |
Adam Tlalka | d4328b4 | 2006-09-29 01:59:53 -0700 | [diff] [blame] | 2263 | } |
Egmont Koblinger | 1ed8a2b | 2007-06-23 17:16:27 -0700 | [diff] [blame] | 2264 | FLUSH |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2265 | } |
| 2266 | |
| 2267 | while (1) { |
| 2268 | if (vc->vc_need_wrap || vc->vc_decim) |
| 2269 | FLUSH |
| 2270 | if (vc->vc_need_wrap) { |
| 2271 | cr(vc); |
| 2272 | lf(vc); |
| 2273 | } |
| 2274 | if (vc->vc_decim) |
| 2275 | insert_char(vc, 1); |
| 2276 | scr_writew(himask ? |
| 2277 | ((vc_attr << 8) & ~himask) + ((tc & 0x100) ? himask : 0) + (tc & 0xff) : |
| 2278 | (vc_attr << 8) + tc, |
| 2279 | (u16 *) vc->vc_pos); |
| 2280 | if (DO_UPDATE(vc) && draw_x < 0) { |
| 2281 | draw_x = vc->vc_x; |
| 2282 | draw_from = vc->vc_pos; |
| 2283 | } |
| 2284 | if (vc->vc_x == vc->vc_cols - 1) { |
| 2285 | vc->vc_need_wrap = vc->vc_decawm; |
| 2286 | draw_to = vc->vc_pos + 2; |
| 2287 | } else { |
| 2288 | vc->vc_x++; |
| 2289 | draw_to = (vc->vc_pos += 2); |
| 2290 | } |
| 2291 | |
| 2292 | if (!--width) break; |
| 2293 | |
| 2294 | tc = conv_uni_to_pc(vc, ' '); /* A space is printed in the second column */ |
| 2295 | if (tc < 0) tc = ' '; |
| 2296 | } |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 2297 | notify_write(vc, c); |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2298 | |
Egmont Koblinger | 1ed8a2b | 2007-06-23 17:16:27 -0700 | [diff] [blame] | 2299 | if (inverse) { |
| 2300 | FLUSH |
| 2301 | } |
| 2302 | |
Egmont Koblinger | 2f1a2cc | 2007-05-08 00:30:37 -0700 | [diff] [blame] | 2303 | if (rescan) { |
| 2304 | rescan = 0; |
| 2305 | inverse = 0; |
| 2306 | width = 1; |
Adam Tlalka | d4328b4 | 2006-09-29 01:59:53 -0700 | [diff] [blame] | 2307 | c = orig; |
| 2308 | goto rescan_last_byte; |
| 2309 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2310 | continue; |
| 2311 | } |
| 2312 | FLUSH |
| 2313 | do_con_trol(tty, vc, orig); |
| 2314 | } |
| 2315 | FLUSH |
| 2316 | console_conditional_schedule(); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2317 | console_unlock(); |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 2318 | notify_update(vc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2319 | return n; |
| 2320 | #undef FLUSH |
| 2321 | } |
| 2322 | |
| 2323 | /* |
| 2324 | * This is the console switching callback. |
| 2325 | * |
| 2326 | * Doing console switching in a process context allows |
| 2327 | * us to do the switches asynchronously (needed when we want |
| 2328 | * to switch due to a keyboard interrupt). Synchronization |
| 2329 | * with other console code and prevention of re-entrancy is |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2330 | * ensured with console_lock. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2331 | */ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 2332 | static void console_callback(struct work_struct *ignored) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | { |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2334 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2335 | |
| 2336 | if (want_console >= 0) { |
| 2337 | if (want_console != fg_console && |
| 2338 | vc_cons_allocated(want_console)) { |
| 2339 | hide_cursor(vc_cons[fg_console].d); |
| 2340 | change_console(vc_cons[want_console].d); |
| 2341 | /* we only changed when the console had already |
| 2342 | been allocated - a new console is not created |
| 2343 | in an interrupt routine */ |
| 2344 | } |
| 2345 | want_console = -1; |
| 2346 | } |
| 2347 | if (do_poke_blanked_console) { /* do not unblank for a LED change */ |
| 2348 | do_poke_blanked_console = 0; |
| 2349 | poke_blanked_console(); |
| 2350 | } |
| 2351 | if (scrollback_delta) { |
| 2352 | struct vc_data *vc = vc_cons[fg_console].d; |
| 2353 | clear_selection(); |
| 2354 | if (vc->vc_mode == KD_TEXT) |
| 2355 | vc->vc_sw->con_scrolldelta(vc, scrollback_delta); |
| 2356 | scrollback_delta = 0; |
| 2357 | } |
| 2358 | if (blank_timer_expired) { |
| 2359 | do_blank_screen(0); |
| 2360 | blank_timer_expired = 0; |
| 2361 | } |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 2362 | notify_update(vc_cons[fg_console].d); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2363 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2364 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2365 | } |
| 2366 | |
Andrew Johnson | b257bc0 | 2007-03-16 13:38:24 -0800 | [diff] [blame] | 2367 | int set_console(int nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2368 | { |
Andrew Johnson | b257bc0 | 2007-03-16 13:38:24 -0800 | [diff] [blame] | 2369 | struct vc_data *vc = vc_cons[fg_console].d; |
| 2370 | |
| 2371 | if (!vc_cons_allocated(nr) || vt_dont_switch || |
| 2372 | (vc->vt_mode.mode == VT_AUTO && vc->vc_mode == KD_GRAPHICS)) { |
| 2373 | |
| 2374 | /* |
| 2375 | * Console switch will fail in console_callback() or |
| 2376 | * change_console() so there is no point scheduling |
| 2377 | * the callback |
| 2378 | * |
| 2379 | * Existing set_console() users don't check the return |
| 2380 | * value so this shouldn't break anything |
| 2381 | */ |
| 2382 | return -EINVAL; |
| 2383 | } |
| 2384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2385 | want_console = nr; |
| 2386 | schedule_console_callback(); |
Andrew Johnson | b257bc0 | 2007-03-16 13:38:24 -0800 | [diff] [blame] | 2387 | |
| 2388 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2389 | } |
| 2390 | |
| 2391 | struct tty_driver *console_driver; |
| 2392 | |
| 2393 | #ifdef CONFIG_VT_CONSOLE |
| 2394 | |
Bernhard Walle | 5ada918 | 2009-12-14 18:00:43 -0800 | [diff] [blame] | 2395 | /** |
| 2396 | * vt_kmsg_redirect() - Sets/gets the kernel message console |
| 2397 | * @new: The new virtual terminal number or -1 if the console should stay |
| 2398 | * unchanged |
| 2399 | * |
| 2400 | * By default, the kernel messages are always printed on the current virtual |
| 2401 | * console. However, the user may modify that default with the |
| 2402 | * TIOCL_SETKMSGREDIRECT ioctl call. |
| 2403 | * |
| 2404 | * This function sets the kernel message console to be @new. It returns the old |
| 2405 | * virtual console number. The virtual terminal number 0 (both as parameter and |
| 2406 | * return value) means no redirection (i.e. always printed on the currently |
| 2407 | * active console). |
| 2408 | * |
| 2409 | * The parameter -1 means that only the current console is returned, but the |
| 2410 | * value is not modified. You may use the macro vt_get_kmsg_redirect() in that |
| 2411 | * case to make the code more understandable. |
| 2412 | * |
| 2413 | * When the kernel is compiled without CONFIG_VT_CONSOLE, this function ignores |
| 2414 | * the parameter and always returns 0. |
| 2415 | */ |
| 2416 | int vt_kmsg_redirect(int new) |
| 2417 | { |
| 2418 | static int kmsg_con; |
| 2419 | |
| 2420 | if (new != -1) |
| 2421 | return xchg(&kmsg_con, new); |
| 2422 | else |
| 2423 | return kmsg_con; |
| 2424 | } |
| 2425 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2426 | /* |
| 2427 | * Console on virtual terminal |
| 2428 | * |
| 2429 | * The console must be locked when we get here. |
| 2430 | */ |
| 2431 | |
| 2432 | static void vt_console_print(struct console *co, const char *b, unsigned count) |
| 2433 | { |
| 2434 | struct vc_data *vc = vc_cons[fg_console].d; |
| 2435 | unsigned char c; |
Nick Piggin | b094000 | 2008-02-06 01:37:04 -0800 | [diff] [blame] | 2436 | static DEFINE_SPINLOCK(printing_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2437 | const ushort *start; |
| 2438 | ushort cnt = 0; |
| 2439 | ushort myx; |
Bernhard Walle | 5ada918 | 2009-12-14 18:00:43 -0800 | [diff] [blame] | 2440 | int kmsg_console; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2441 | |
| 2442 | /* console busy or not yet initialized */ |
Nick Piggin | b094000 | 2008-02-06 01:37:04 -0800 | [diff] [blame] | 2443 | if (!printable) |
| 2444 | return; |
| 2445 | if (!spin_trylock(&printing_lock)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2446 | return; |
| 2447 | |
Bernhard Walle | 5ada918 | 2009-12-14 18:00:43 -0800 | [diff] [blame] | 2448 | kmsg_console = vt_get_kmsg_redirect(); |
| 2449 | if (kmsg_console && vc_cons_allocated(kmsg_console - 1)) |
| 2450 | vc = vc_cons[kmsg_console - 1].d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2451 | |
| 2452 | /* read `x' only after setting currcons properly (otherwise |
| 2453 | the `x' macro will read the x of the foreground console). */ |
| 2454 | myx = vc->vc_x; |
| 2455 | |
| 2456 | if (!vc_cons_allocated(fg_console)) { |
| 2457 | /* impossible */ |
| 2458 | /* printk("vt_console_print: tty %d not allocated ??\n", currcons+1); */ |
| 2459 | goto quit; |
| 2460 | } |
| 2461 | |
Jesse Barnes | 8fd4bd2 | 2010-06-23 12:56:12 -0700 | [diff] [blame] | 2462 | if (vc->vc_mode != KD_TEXT && !vt_force_oops_output(vc)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2463 | goto quit; |
| 2464 | |
| 2465 | /* undraw cursor first */ |
| 2466 | if (IS_FG(vc)) |
| 2467 | hide_cursor(vc); |
| 2468 | |
| 2469 | start = (ushort *)vc->vc_pos; |
| 2470 | |
| 2471 | /* Contrived structure to try to emulate original need_wrap behaviour |
| 2472 | * Problems caused when we have need_wrap set on '\n' character */ |
| 2473 | while (count--) { |
| 2474 | c = *b++; |
| 2475 | if (c == 10 || c == 13 || c == 8 || vc->vc_need_wrap) { |
| 2476 | if (cnt > 0) { |
| 2477 | if (CON_IS_VISIBLE(vc)) |
| 2478 | vc->vc_sw->con_putcs(vc, start, cnt, vc->vc_y, vc->vc_x); |
| 2479 | vc->vc_x += cnt; |
| 2480 | if (vc->vc_need_wrap) |
| 2481 | vc->vc_x--; |
| 2482 | cnt = 0; |
| 2483 | } |
| 2484 | if (c == 8) { /* backspace */ |
| 2485 | bs(vc); |
| 2486 | start = (ushort *)vc->vc_pos; |
| 2487 | myx = vc->vc_x; |
| 2488 | continue; |
| 2489 | } |
| 2490 | if (c != 13) |
| 2491 | lf(vc); |
| 2492 | cr(vc); |
| 2493 | start = (ushort *)vc->vc_pos; |
| 2494 | myx = vc->vc_x; |
| 2495 | if (c == 10 || c == 13) |
| 2496 | continue; |
| 2497 | } |
| 2498 | scr_writew((vc->vc_attr << 8) + c, (unsigned short *)vc->vc_pos); |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 2499 | notify_write(vc, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2500 | cnt++; |
| 2501 | if (myx == vc->vc_cols - 1) { |
| 2502 | vc->vc_need_wrap = 1; |
| 2503 | continue; |
| 2504 | } |
| 2505 | vc->vc_pos += 2; |
| 2506 | myx++; |
| 2507 | } |
| 2508 | if (cnt > 0) { |
| 2509 | if (CON_IS_VISIBLE(vc)) |
| 2510 | vc->vc_sw->con_putcs(vc, start, cnt, vc->vc_y, vc->vc_x); |
| 2511 | vc->vc_x += cnt; |
| 2512 | if (vc->vc_x == vc->vc_cols) { |
| 2513 | vc->vc_x--; |
| 2514 | vc->vc_need_wrap = 1; |
| 2515 | } |
| 2516 | } |
| 2517 | set_cursor(vc); |
Samuel Thibault | b293d75 | 2007-10-18 23:39:17 -0700 | [diff] [blame] | 2518 | notify_update(vc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2519 | |
| 2520 | quit: |
Nick Piggin | b094000 | 2008-02-06 01:37:04 -0800 | [diff] [blame] | 2521 | spin_unlock(&printing_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2522 | } |
| 2523 | |
| 2524 | static struct tty_driver *vt_console_device(struct console *c, int *index) |
| 2525 | { |
| 2526 | *index = c->index ? c->index-1 : fg_console; |
| 2527 | return console_driver; |
| 2528 | } |
| 2529 | |
| 2530 | static struct console vt_console_driver = { |
| 2531 | .name = "tty", |
| 2532 | .write = vt_console_print, |
| 2533 | .device = vt_console_device, |
| 2534 | .unblank = unblank_screen, |
| 2535 | .flags = CON_PRINTBUFFER, |
| 2536 | .index = -1, |
| 2537 | }; |
| 2538 | #endif |
| 2539 | |
| 2540 | /* |
| 2541 | * Handling of Linux-specific VC ioctls |
| 2542 | */ |
| 2543 | |
| 2544 | /* |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2545 | * Generally a bit racy with respect to console_lock();. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2546 | * |
| 2547 | * There are some functions which don't need it. |
| 2548 | * |
| 2549 | * There are some functions which can sleep for arbitrary periods |
| 2550 | * (paste_selection) but we don't need the lock there anyway. |
| 2551 | * |
| 2552 | * set_selection has locking, and definitely needs it |
| 2553 | */ |
| 2554 | |
| 2555 | int tioclinux(struct tty_struct *tty, unsigned long arg) |
| 2556 | { |
| 2557 | char type, data; |
| 2558 | char __user *p = (char __user *)arg; |
| 2559 | int lines; |
| 2560 | int ret; |
| 2561 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2562 | if (current->signal->tty != tty && !capable(CAP_SYS_ADMIN)) |
| 2563 | return -EPERM; |
| 2564 | if (get_user(type, p)) |
| 2565 | return -EFAULT; |
| 2566 | ret = 0; |
Alan Cox | 04f378b | 2008-04-30 00:53:29 -0700 | [diff] [blame] | 2567 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | switch (type) |
| 2569 | { |
| 2570 | case TIOCL_SETSEL: |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2571 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2572 | ret = set_selection((struct tiocl_selection __user *)(p+1), tty); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2573 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2574 | break; |
| 2575 | case TIOCL_PASTESEL: |
| 2576 | ret = paste_selection(tty); |
| 2577 | break; |
| 2578 | case TIOCL_UNBLANKSCREEN: |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2579 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2580 | unblank_screen(); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2581 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2582 | break; |
| 2583 | case TIOCL_SELLOADLUT: |
Alan Cox | 5289475 | 2012-03-02 15:00:02 +0000 | [diff] [blame] | 2584 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2585 | ret = sel_loadlut(p); |
Alan Cox | 5289475 | 2012-03-02 15:00:02 +0000 | [diff] [blame] | 2586 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2587 | break; |
| 2588 | case TIOCL_GETSHIFTSTATE: |
Alan Cox | 04f378b | 2008-04-30 00:53:29 -0700 | [diff] [blame] | 2589 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2590 | /* |
| 2591 | * Make it possible to react to Shift+Mousebutton. |
| 2592 | * Note that 'shift_state' is an undocumented |
| 2593 | * kernel-internal variable; programs not closely |
| 2594 | * related to the kernel should not use this. |
| 2595 | */ |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame] | 2596 | data = vt_get_shift_state(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2597 | ret = __put_user(data, p); |
| 2598 | break; |
| 2599 | case TIOCL_GETMOUSEREPORTING: |
Alan Cox | 20f6257 | 2012-03-02 14:59:37 +0000 | [diff] [blame] | 2600 | console_lock(); /* May be overkill */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2601 | data = mouse_reporting(); |
Alan Cox | 20f6257 | 2012-03-02 14:59:37 +0000 | [diff] [blame] | 2602 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2603 | ret = __put_user(data, p); |
| 2604 | break; |
| 2605 | case TIOCL_SETVESABLANK: |
Alan Cox | 20f6257 | 2012-03-02 14:59:37 +0000 | [diff] [blame] | 2606 | console_lock(); |
Yoichi Yuasa | 403aac9 | 2006-12-06 20:38:38 -0800 | [diff] [blame] | 2607 | ret = set_vesa_blanking(p); |
Alan Cox | 20f6257 | 2012-03-02 14:59:37 +0000 | [diff] [blame] | 2608 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2609 | break; |
Rafael J. Wysocki | 0ca0773 | 2006-03-31 02:30:58 -0800 | [diff] [blame] | 2610 | case TIOCL_GETKMSGREDIRECT: |
Bernhard Walle | 5ada918 | 2009-12-14 18:00:43 -0800 | [diff] [blame] | 2611 | data = vt_get_kmsg_redirect(); |
Rafael J. Wysocki | 0ca0773 | 2006-03-31 02:30:58 -0800 | [diff] [blame] | 2612 | ret = __put_user(data, p); |
| 2613 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2614 | case TIOCL_SETKMSGREDIRECT: |
| 2615 | if (!capable(CAP_SYS_ADMIN)) { |
| 2616 | ret = -EPERM; |
| 2617 | } else { |
| 2618 | if (get_user(data, p+1)) |
| 2619 | ret = -EFAULT; |
| 2620 | else |
Bernhard Walle | 5ada918 | 2009-12-14 18:00:43 -0800 | [diff] [blame] | 2621 | vt_kmsg_redirect(data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2622 | } |
| 2623 | break; |
| 2624 | case TIOCL_GETFGCONSOLE: |
Alan Cox | 20f6257 | 2012-03-02 14:59:37 +0000 | [diff] [blame] | 2625 | /* No locking needed as this is a transiently |
| 2626 | correct return anyway if the caller hasn't |
| 2627 | disabled switching */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2628 | ret = fg_console; |
| 2629 | break; |
| 2630 | case TIOCL_SCROLLCONSOLE: |
| 2631 | if (get_user(lines, (s32 __user *)(p+4))) { |
| 2632 | ret = -EFAULT; |
| 2633 | } else { |
Alan Cox | 20f6257 | 2012-03-02 14:59:37 +0000 | [diff] [blame] | 2634 | /* Need the console lock here. Note that lots |
| 2635 | of other calls need fixing before the lock |
| 2636 | is actually useful ! */ |
| 2637 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2638 | scrollfront(vc_cons[fg_console].d, lines); |
Alan Cox | 20f6257 | 2012-03-02 14:59:37 +0000 | [diff] [blame] | 2639 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2640 | ret = 0; |
| 2641 | } |
| 2642 | break; |
| 2643 | case TIOCL_BLANKSCREEN: /* until explicitly unblanked, not only poked */ |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2644 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2645 | ignore_poke = 1; |
| 2646 | do_blank_screen(0); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2647 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2648 | break; |
| 2649 | case TIOCL_BLANKEDSCREEN: |
| 2650 | ret = console_blanked; |
| 2651 | break; |
| 2652 | default: |
| 2653 | ret = -EINVAL; |
| 2654 | break; |
| 2655 | } |
| 2656 | return ret; |
| 2657 | } |
| 2658 | |
| 2659 | /* |
| 2660 | * /dev/ttyN handling |
| 2661 | */ |
| 2662 | |
| 2663 | static int con_write(struct tty_struct *tty, const unsigned char *buf, int count) |
| 2664 | { |
| 2665 | int retval; |
| 2666 | |
| 2667 | retval = do_con_write(tty, buf, count); |
| 2668 | con_flush_chars(tty); |
| 2669 | |
| 2670 | return retval; |
| 2671 | } |
| 2672 | |
Alan Cox | 5d19f54 | 2008-04-30 00:54:08 -0700 | [diff] [blame] | 2673 | static int con_put_char(struct tty_struct *tty, unsigned char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2674 | { |
| 2675 | if (in_interrupt()) |
Alan Cox | 5d19f54 | 2008-04-30 00:54:08 -0700 | [diff] [blame] | 2676 | return 0; /* n_r3964 calls put_char() from interrupt context */ |
| 2677 | return do_con_write(tty, &ch, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2678 | } |
| 2679 | |
| 2680 | static int con_write_room(struct tty_struct *tty) |
| 2681 | { |
| 2682 | if (tty->stopped) |
| 2683 | return 0; |
Joe Peterson | a88a69c | 2009-01-02 13:40:53 +0000 | [diff] [blame] | 2684 | return 32768; /* No limit, really; we're not buffering */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2685 | } |
| 2686 | |
| 2687 | static int con_chars_in_buffer(struct tty_struct *tty) |
| 2688 | { |
| 2689 | return 0; /* we're not buffering */ |
| 2690 | } |
| 2691 | |
| 2692 | /* |
| 2693 | * con_throttle and con_unthrottle are only used for |
| 2694 | * paste_selection(), which has to stuff in a large number of |
| 2695 | * characters... |
| 2696 | */ |
| 2697 | static void con_throttle(struct tty_struct *tty) |
| 2698 | { |
| 2699 | } |
| 2700 | |
| 2701 | static void con_unthrottle(struct tty_struct *tty) |
| 2702 | { |
| 2703 | struct vc_data *vc = tty->driver_data; |
| 2704 | |
| 2705 | wake_up_interruptible(&vc->paste_wait); |
| 2706 | } |
| 2707 | |
| 2708 | /* |
| 2709 | * Turn the Scroll-Lock LED on when the tty is stopped |
| 2710 | */ |
| 2711 | static void con_stop(struct tty_struct *tty) |
| 2712 | { |
| 2713 | int console_num; |
| 2714 | if (!tty) |
| 2715 | return; |
| 2716 | console_num = tty->index; |
| 2717 | if (!vc_cons_allocated(console_num)) |
| 2718 | return; |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame] | 2719 | vt_kbd_con_stop(console_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2720 | } |
| 2721 | |
| 2722 | /* |
| 2723 | * Turn the Scroll-Lock LED off when the console is started |
| 2724 | */ |
| 2725 | static void con_start(struct tty_struct *tty) |
| 2726 | { |
| 2727 | int console_num; |
| 2728 | if (!tty) |
| 2729 | return; |
| 2730 | console_num = tty->index; |
| 2731 | if (!vc_cons_allocated(console_num)) |
| 2732 | return; |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame] | 2733 | vt_kbd_con_start(console_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2734 | } |
| 2735 | |
| 2736 | static void con_flush_chars(struct tty_struct *tty) |
| 2737 | { |
| 2738 | struct vc_data *vc; |
| 2739 | |
| 2740 | if (in_interrupt()) /* from flush_to_ldisc */ |
| 2741 | return; |
| 2742 | |
| 2743 | /* if we race with con_close(), vt may be null */ |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2744 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2745 | vc = tty->driver_data; |
| 2746 | if (vc) |
| 2747 | set_cursor(vc); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2748 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2749 | } |
| 2750 | |
| 2751 | /* |
| 2752 | * Allocate the console screen memory. |
| 2753 | */ |
Jiri Slaby | bc1e99d | 2012-06-04 13:35:33 +0200 | [diff] [blame] | 2754 | static int con_install(struct tty_driver *driver, struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2755 | { |
| 2756 | unsigned int currcons = tty->index; |
Jiri Slaby | bc1e99d | 2012-06-04 13:35:33 +0200 | [diff] [blame] | 2757 | struct vc_data *vc; |
| 2758 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2759 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2760 | console_lock(); |
Jiri Slaby | bc1e99d | 2012-06-04 13:35:33 +0200 | [diff] [blame] | 2761 | ret = vc_allocate(currcons); |
| 2762 | if (ret) |
| 2763 | goto unlock; |
Alan Cox | feebed6 | 2008-10-13 10:41:30 +0100 | [diff] [blame] | 2764 | |
Jiri Slaby | bc1e99d | 2012-06-04 13:35:33 +0200 | [diff] [blame] | 2765 | vc = vc_cons[currcons].d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2766 | |
Jiri Slaby | bc1e99d | 2012-06-04 13:35:33 +0200 | [diff] [blame] | 2767 | /* Still being freed */ |
| 2768 | if (vc->port.tty) { |
| 2769 | ret = -ERESTARTSYS; |
| 2770 | goto unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2771 | } |
Jiri Slaby | bc1e99d | 2012-06-04 13:35:33 +0200 | [diff] [blame] | 2772 | |
| 2773 | ret = tty_port_install(&vc->port, driver, tty); |
| 2774 | if (ret) |
| 2775 | goto unlock; |
| 2776 | |
| 2777 | tty->driver_data = vc; |
| 2778 | vc->port.tty = tty; |
| 2779 | |
| 2780 | if (!tty->winsize.ws_row && !tty->winsize.ws_col) { |
| 2781 | tty->winsize.ws_row = vc_cons[currcons].d->vc_rows; |
| 2782 | tty->winsize.ws_col = vc_cons[currcons].d->vc_cols; |
| 2783 | } |
| 2784 | if (vc->vc_utf) |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 2785 | tty->termios.c_iflag |= IUTF8; |
Jiri Slaby | bc1e99d | 2012-06-04 13:35:33 +0200 | [diff] [blame] | 2786 | else |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 2787 | tty->termios.c_iflag &= ~IUTF8; |
Jiri Slaby | bc1e99d | 2012-06-04 13:35:33 +0200 | [diff] [blame] | 2788 | unlock: |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2789 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2790 | return ret; |
| 2791 | } |
| 2792 | |
Jiri Slaby | bc1e99d | 2012-06-04 13:35:33 +0200 | [diff] [blame] | 2793 | static int con_open(struct tty_struct *tty, struct file *filp) |
| 2794 | { |
| 2795 | /* everything done in install */ |
| 2796 | return 0; |
| 2797 | } |
| 2798 | |
| 2799 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2800 | static void con_close(struct tty_struct *tty, struct file *filp) |
| 2801 | { |
Alan Cox | feebed6 | 2008-10-13 10:41:30 +0100 | [diff] [blame] | 2802 | /* Nothing to do - we defer to shutdown */ |
| 2803 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2804 | |
Alan Cox | feebed6 | 2008-10-13 10:41:30 +0100 | [diff] [blame] | 2805 | static void con_shutdown(struct tty_struct *tty) |
| 2806 | { |
| 2807 | struct vc_data *vc = tty->driver_data; |
| 2808 | BUG_ON(vc == NULL); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2809 | console_lock(); |
Alan Cox | 8ce7326 | 2010-06-01 22:52:56 +0200 | [diff] [blame] | 2810 | vc->port.tty = NULL; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2811 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2812 | } |
| 2813 | |
Jan Engelhardt | fa6ce9a | 2007-05-08 00:38:04 -0700 | [diff] [blame] | 2814 | static int default_italic_color = 2; // green (ASCII) |
| 2815 | static int default_underline_color = 3; // cyan (ASCII) |
| 2816 | module_param_named(italic, default_italic_color, int, S_IRUGO | S_IWUSR); |
| 2817 | module_param_named(underline, default_underline_color, int, S_IRUGO | S_IWUSR); |
| 2818 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2819 | static void vc_init(struct vc_data *vc, unsigned int rows, |
| 2820 | unsigned int cols, int do_clear) |
| 2821 | { |
| 2822 | int j, k ; |
| 2823 | |
| 2824 | vc->vc_cols = cols; |
| 2825 | vc->vc_rows = rows; |
| 2826 | vc->vc_size_row = cols << 1; |
| 2827 | vc->vc_screenbuf_size = vc->vc_rows * vc->vc_size_row; |
| 2828 | |
| 2829 | set_origin(vc); |
| 2830 | vc->vc_pos = vc->vc_origin; |
| 2831 | reset_vc(vc); |
| 2832 | for (j=k=0; j<16; j++) { |
| 2833 | vc->vc_palette[k++] = default_red[j] ; |
| 2834 | vc->vc_palette[k++] = default_grn[j] ; |
| 2835 | vc->vc_palette[k++] = default_blu[j] ; |
| 2836 | } |
| 2837 | vc->vc_def_color = 0x07; /* white */ |
Jan Engelhardt | fa6ce9a | 2007-05-08 00:38:04 -0700 | [diff] [blame] | 2838 | vc->vc_ulcolor = default_underline_color; |
| 2839 | vc->vc_itcolor = default_italic_color; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2840 | vc->vc_halfcolor = 0x08; /* grey */ |
| 2841 | init_waitqueue_head(&vc->paste_wait); |
| 2842 | reset_terminal(vc, do_clear); |
| 2843 | } |
| 2844 | |
| 2845 | /* |
| 2846 | * This routine initializes console interrupts, and does nothing |
| 2847 | * else. If you want the screen to clear, call tty_write with |
| 2848 | * the appropriate escape-sequence. |
| 2849 | */ |
| 2850 | |
| 2851 | static int __init con_init(void) |
| 2852 | { |
| 2853 | const char *display_desc = NULL; |
| 2854 | struct vc_data *vc; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 2855 | unsigned int currcons = 0, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2856 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2857 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2858 | |
| 2859 | if (conswitchp) |
| 2860 | display_desc = conswitchp->con_startup(); |
| 2861 | if (!display_desc) { |
| 2862 | fg_console = 0; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2863 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2864 | return 0; |
| 2865 | } |
| 2866 | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 2867 | for (i = 0; i < MAX_NR_CON_DRIVER; i++) { |
| 2868 | struct con_driver *con_driver = ®istered_con_driver[i]; |
| 2869 | |
| 2870 | if (con_driver->con == NULL) { |
| 2871 | con_driver->con = conswitchp; |
| 2872 | con_driver->desc = display_desc; |
| 2873 | con_driver->flag = CON_DRIVER_FLAG_INIT; |
| 2874 | con_driver->first = 0; |
| 2875 | con_driver->last = MAX_NR_CONSOLES - 1; |
| 2876 | break; |
| 2877 | } |
| 2878 | } |
| 2879 | |
| 2880 | for (i = 0; i < MAX_NR_CONSOLES; i++) |
| 2881 | con_driver_map[i] = conswitchp; |
| 2882 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2883 | if (blankinterval) { |
| 2884 | blank_state = blank_normal_wait; |
Daniel Mack | f324edc | 2009-06-16 15:33:52 -0700 | [diff] [blame] | 2885 | mod_timer(&console_timer, jiffies + (blankinterval * HZ)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2886 | } |
| 2887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2888 | for (currcons = 0; currcons < MIN_NR_CONSOLES; currcons++) { |
Pekka Enberg | a5f4f52 | 2009-06-10 23:53:37 +0300 | [diff] [blame] | 2889 | vc_cons[currcons].d = vc = kzalloc(sizeof(struct vc_data), GFP_NOWAIT); |
Eric W. Biederman | 7f1f86a | 2007-02-13 14:38:58 -0700 | [diff] [blame] | 2890 | INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK); |
Alan Cox | ff917ba | 2010-06-01 22:52:55 +0200 | [diff] [blame] | 2891 | tty_port_init(&vc->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2892 | visual_init(vc, currcons, 1); |
Pekka Enberg | a5f4f52 | 2009-06-10 23:53:37 +0300 | [diff] [blame] | 2893 | vc->vc_screenbuf = kzalloc(vc->vc_screenbuf_size, GFP_NOWAIT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2894 | vc_init(vc, vc->vc_rows, vc->vc_cols, |
| 2895 | currcons || !vc->vc_sw->con_save_screen); |
| 2896 | } |
| 2897 | currcons = fg_console = 0; |
| 2898 | master_display_fg = vc = vc_cons[currcons].d; |
| 2899 | set_origin(vc); |
| 2900 | save_screen(vc); |
| 2901 | gotoxy(vc, vc->vc_x, vc->vc_y); |
| 2902 | csi_J(vc, 0); |
| 2903 | update_screen(vc); |
Kay Sievers | 5da527a | 2012-04-03 03:18:23 +0200 | [diff] [blame] | 2904 | pr_info("Console: %s %s %dx%d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2905 | vc->vc_can_do_color ? "colour" : "mono", |
| 2906 | display_desc, vc->vc_cols, vc->vc_rows); |
| 2907 | printable = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2908 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 2909 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2910 | |
| 2911 | #ifdef CONFIG_VT_CONSOLE |
| 2912 | register_console(&vt_console_driver); |
| 2913 | #endif |
| 2914 | return 0; |
| 2915 | } |
| 2916 | console_initcall(con_init); |
| 2917 | |
Jeff Dike | b68e31d | 2006-10-02 02:17:18 -0700 | [diff] [blame] | 2918 | static const struct tty_operations con_ops = { |
Jiri Slaby | bc1e99d | 2012-06-04 13:35:33 +0200 | [diff] [blame] | 2919 | .install = con_install, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2920 | .open = con_open, |
| 2921 | .close = con_close, |
| 2922 | .write = con_write, |
| 2923 | .write_room = con_write_room, |
| 2924 | .put_char = con_put_char, |
| 2925 | .flush_chars = con_flush_chars, |
| 2926 | .chars_in_buffer = con_chars_in_buffer, |
| 2927 | .ioctl = vt_ioctl, |
Arnd Bergmann | e921665 | 2009-08-06 15:09:28 +0200 | [diff] [blame] | 2928 | #ifdef CONFIG_COMPAT |
| 2929 | .compat_ioctl = vt_compat_ioctl, |
| 2930 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2931 | .stop = con_stop, |
| 2932 | .start = con_start, |
| 2933 | .throttle = con_throttle, |
| 2934 | .unthrottle = con_unthrottle, |
Alan Cox | 8c9a9dd | 2008-08-15 10:39:38 +0100 | [diff] [blame] | 2935 | .resize = vt_resize, |
Alan Cox | feebed6 | 2008-10-13 10:41:30 +0100 | [diff] [blame] | 2936 | .shutdown = con_shutdown |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | }; |
| 2938 | |
Alan Cox | d81ed10 | 2008-10-13 10:41:42 +0100 | [diff] [blame] | 2939 | static struct cdev vc0_cdev; |
| 2940 | |
Kay Sievers | fbc92a3 | 2010-12-01 18:51:05 +0100 | [diff] [blame] | 2941 | static ssize_t show_tty_active(struct device *dev, |
| 2942 | struct device_attribute *attr, char *buf) |
| 2943 | { |
| 2944 | return sprintf(buf, "tty%d\n", fg_console + 1); |
| 2945 | } |
| 2946 | static DEVICE_ATTR(active, S_IRUGO, show_tty_active, NULL); |
| 2947 | |
Alan Cox | d81ed10 | 2008-10-13 10:41:42 +0100 | [diff] [blame] | 2948 | int __init vty_init(const struct file_operations *console_fops) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2949 | { |
Alan Cox | d81ed10 | 2008-10-13 10:41:42 +0100 | [diff] [blame] | 2950 | cdev_init(&vc0_cdev, console_fops); |
| 2951 | if (cdev_add(&vc0_cdev, MKDEV(TTY_MAJOR, 0), 1) || |
| 2952 | register_chrdev_region(MKDEV(TTY_MAJOR, 0), 1, "/dev/vc/0") < 0) |
| 2953 | panic("Couldn't register /dev/tty0 driver\n"); |
Kay Sievers | fbc92a3 | 2010-12-01 18:51:05 +0100 | [diff] [blame] | 2954 | tty0dev = device_create(tty_class, NULL, MKDEV(TTY_MAJOR, 0), NULL, "tty0"); |
| 2955 | if (IS_ERR(tty0dev)) |
| 2956 | tty0dev = NULL; |
| 2957 | else |
Kay Sievers | a2a6a82 | 2011-01-09 16:39:14 +0100 | [diff] [blame] | 2958 | WARN_ON(device_create_file(tty0dev, &dev_attr_active) < 0); |
Alan Cox | d81ed10 | 2008-10-13 10:41:42 +0100 | [diff] [blame] | 2959 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2960 | vcs_init(); |
| 2961 | |
| 2962 | console_driver = alloc_tty_driver(MAX_NR_CONSOLES); |
| 2963 | if (!console_driver) |
| 2964 | panic("Couldn't allocate console driver\n"); |
Jiri Slaby | 2f16669 | 2012-03-05 14:51:52 +0100 | [diff] [blame] | 2965 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2966 | console_driver->name = "tty"; |
| 2967 | console_driver->name_base = 1; |
| 2968 | console_driver->major = TTY_MAJOR; |
| 2969 | console_driver->minor_start = 1; |
| 2970 | console_driver->type = TTY_DRIVER_TYPE_CONSOLE; |
| 2971 | console_driver->init_termios = tty_std_termios; |
Samuel Thibault | c1236d3 | 2008-05-06 20:42:37 -0700 | [diff] [blame] | 2972 | if (default_utf8) |
| 2973 | console_driver->init_termios.c_iflag |= IUTF8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2974 | console_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS; |
| 2975 | tty_set_operations(console_driver, &con_ops); |
| 2976 | if (tty_register_driver(console_driver)) |
| 2977 | panic("Couldn't register console driver\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | kbd_init(); |
| 2979 | console_map_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2980 | #ifdef CONFIG_MDA_CONSOLE |
| 2981 | mda_console_init(); |
| 2982 | #endif |
| 2983 | return 0; |
| 2984 | } |
| 2985 | |
| 2986 | #ifndef VT_SINGLE_DRIVER |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 2987 | |
| 2988 | static struct class *vtconsole_class; |
| 2989 | |
Alan Cox | 50e244c | 2013-01-25 10:28:15 +1000 | [diff] [blame] | 2990 | static int do_bind_con_driver(const struct consw *csw, int first, int last, |
Jesse Barnes | b7269dd | 2007-07-17 04:05:34 -0700 | [diff] [blame] | 2991 | int deflt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2992 | { |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 2993 | struct module *owner = csw->owner; |
| 2994 | const char *desc = NULL; |
| 2995 | struct con_driver *con_driver; |
| 2996 | int i, j = -1, k = -1, retval = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2997 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2998 | if (!try_module_get(owner)) |
| 2999 | return -ENODEV; |
| 3000 | |
Alan Cox | 50e244c | 2013-01-25 10:28:15 +1000 | [diff] [blame] | 3001 | WARN_CONSOLE_UNLOCKED(); |
Antonino A. Daplas | 1c8ce27 | 2006-06-26 00:27:03 -0700 | [diff] [blame] | 3002 | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3003 | /* check if driver is registered */ |
| 3004 | for (i = 0; i < MAX_NR_CON_DRIVER; i++) { |
| 3005 | con_driver = ®istered_con_driver[i]; |
| 3006 | |
| 3007 | if (con_driver->con == csw) { |
| 3008 | desc = con_driver->desc; |
| 3009 | retval = 0; |
| 3010 | break; |
| 3011 | } |
| 3012 | } |
| 3013 | |
| 3014 | if (retval) |
| 3015 | goto err; |
| 3016 | |
| 3017 | if (!(con_driver->flag & CON_DRIVER_FLAG_INIT)) { |
| 3018 | csw->con_startup(); |
| 3019 | con_driver->flag |= CON_DRIVER_FLAG_INIT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3020 | } |
Antonino A. Daplas | 1c8ce27 | 2006-06-26 00:27:03 -0700 | [diff] [blame] | 3021 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3022 | if (deflt) { |
| 3023 | if (conswitchp) |
| 3024 | module_put(conswitchp->owner); |
Antonino A. Daplas | 1c8ce27 | 2006-06-26 00:27:03 -0700 | [diff] [blame] | 3025 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3026 | __module_get(owner); |
| 3027 | conswitchp = csw; |
| 3028 | } |
| 3029 | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3030 | first = max(first, con_driver->first); |
| 3031 | last = min(last, con_driver->last); |
| 3032 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3033 | for (i = first; i <= last; i++) { |
| 3034 | int old_was_color; |
| 3035 | struct vc_data *vc = vc_cons[i].d; |
| 3036 | |
| 3037 | if (con_driver_map[i]) |
| 3038 | module_put(con_driver_map[i]->owner); |
| 3039 | __module_get(owner); |
| 3040 | con_driver_map[i] = csw; |
| 3041 | |
| 3042 | if (!vc || !vc->vc_sw) |
| 3043 | continue; |
| 3044 | |
| 3045 | j = i; |
Antonino A. Daplas | 1c8ce27 | 2006-06-26 00:27:03 -0700 | [diff] [blame] | 3046 | |
David Hollister | 4ee1acc | 2006-06-26 00:26:41 -0700 | [diff] [blame] | 3047 | if (CON_IS_VISIBLE(vc)) { |
| 3048 | k = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3049 | save_screen(vc); |
David Hollister | 4ee1acc | 2006-06-26 00:26:41 -0700 | [diff] [blame] | 3050 | } |
| 3051 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3052 | old_was_color = vc->vc_can_do_color; |
| 3053 | vc->vc_sw->con_deinit(vc); |
Francisco Jerez | 9fc2b2d | 2010-08-22 17:37:24 +0200 | [diff] [blame] | 3054 | vc->vc_origin = (unsigned long)vc->vc_screenbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3055 | visual_init(vc, i, 0); |
Antonino A. Daplas | 1c8ce27 | 2006-06-26 00:27:03 -0700 | [diff] [blame] | 3056 | set_origin(vc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3057 | update_attr(vc); |
| 3058 | |
| 3059 | /* If the console changed between mono <-> color, then |
| 3060 | * the attributes in the screenbuf will be wrong. The |
| 3061 | * following resets all attributes to something sane. |
| 3062 | */ |
| 3063 | if (old_was_color != vc->vc_can_do_color) |
| 3064 | clear_buffer_attributes(vc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3065 | } |
David Hollister | 4ee1acc | 2006-06-26 00:26:41 -0700 | [diff] [blame] | 3066 | |
Mandeep Singh Baines | 1ffdda9 | 2011-02-06 09:31:53 -0800 | [diff] [blame] | 3067 | pr_info("Console: switching "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3068 | if (!deflt) |
| 3069 | printk("consoles %d-%d ", first+1, last+1); |
David Hollister | 4ee1acc | 2006-06-26 00:26:41 -0700 | [diff] [blame] | 3070 | if (j >= 0) { |
| 3071 | struct vc_data *vc = vc_cons[j].d; |
| 3072 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3073 | printk("to %s %s %dx%d\n", |
David Hollister | 4ee1acc | 2006-06-26 00:26:41 -0700 | [diff] [blame] | 3074 | vc->vc_can_do_color ? "colour" : "mono", |
| 3075 | desc, vc->vc_cols, vc->vc_rows); |
| 3076 | |
| 3077 | if (k >= 0) { |
| 3078 | vc = vc_cons[k].d; |
| 3079 | update_screen(vc); |
| 3080 | } |
| 3081 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3082 | printk("to %s\n", desc); |
| 3083 | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3084 | retval = 0; |
| 3085 | err: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3086 | module_put(owner); |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3087 | return retval; |
| 3088 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3089 | |
Alan Cox | 50e244c | 2013-01-25 10:28:15 +1000 | [diff] [blame] | 3090 | |
| 3091 | static int bind_con_driver(const struct consw *csw, int first, int last, |
| 3092 | int deflt) |
| 3093 | { |
| 3094 | int ret; |
| 3095 | |
| 3096 | console_lock(); |
| 3097 | ret = do_bind_con_driver(csw, first, last, deflt); |
| 3098 | console_unlock(); |
| 3099 | return ret; |
| 3100 | } |
| 3101 | |
Antonino A. Daplas | 13ae664 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3102 | #ifdef CONFIG_VT_HW_CONSOLE_BINDING |
| 3103 | static int con_is_graphics(const struct consw *csw, int first, int last) |
| 3104 | { |
| 3105 | int i, retval = 0; |
| 3106 | |
| 3107 | for (i = first; i <= last; i++) { |
| 3108 | struct vc_data *vc = vc_cons[i].d; |
| 3109 | |
| 3110 | if (vc && vc->vc_mode == KD_GRAPHICS) { |
| 3111 | retval = 1; |
| 3112 | break; |
| 3113 | } |
| 3114 | } |
| 3115 | |
| 3116 | return retval; |
| 3117 | } |
| 3118 | |
Jesse Barnes | b7269dd | 2007-07-17 04:05:34 -0700 | [diff] [blame] | 3119 | /** |
| 3120 | * unbind_con_driver - unbind a console driver |
| 3121 | * @csw: pointer to console driver to unregister |
| 3122 | * @first: first in range of consoles that @csw should be unbound from |
| 3123 | * @last: last in range of consoles that @csw should be unbound from |
| 3124 | * @deflt: should next bound console driver be default after @csw is unbound? |
| 3125 | * |
| 3126 | * To unbind a driver from all possible consoles, pass 0 as @first and |
| 3127 | * %MAX_NR_CONSOLES as @last. |
| 3128 | * |
| 3129 | * @deflt controls whether the console that ends up replacing @csw should be |
| 3130 | * the default console. |
| 3131 | * |
| 3132 | * RETURNS: |
| 3133 | * -ENODEV if @csw isn't a registered console driver or can't be unregistered |
| 3134 | * or 0 on success. |
| 3135 | */ |
Antonino A. Daplas | 623e71b | 2007-07-17 04:05:28 -0700 | [diff] [blame] | 3136 | int unbind_con_driver(const struct consw *csw, int first, int last, int deflt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3137 | { |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 3138 | int retval; |
| 3139 | |
| 3140 | console_lock(); |
| 3141 | retval = do_unbind_con_driver(csw, first, last, deflt); |
| 3142 | console_unlock(); |
| 3143 | return retval; |
| 3144 | } |
| 3145 | EXPORT_SYMBOL(unbind_con_driver); |
| 3146 | |
| 3147 | /* unlocked version of unbind_con_driver() */ |
| 3148 | int do_unbind_con_driver(const struct consw *csw, int first, int last, int deflt) |
| 3149 | { |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3150 | struct module *owner = csw->owner; |
| 3151 | const struct consw *defcsw = NULL; |
| 3152 | struct con_driver *con_driver = NULL, *con_back = NULL; |
| 3153 | int i, retval = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3154 | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3155 | if (!try_module_get(owner)) |
| 3156 | return -ENODEV; |
| 3157 | |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 3158 | WARN_CONSOLE_UNLOCKED(); |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3159 | |
| 3160 | /* check if driver is registered and if it is unbindable */ |
| 3161 | for (i = 0; i < MAX_NR_CON_DRIVER; i++) { |
| 3162 | con_driver = ®istered_con_driver[i]; |
| 3163 | |
| 3164 | if (con_driver->con == csw && |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3165 | con_driver->flag & CON_DRIVER_FLAG_MODULE) { |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3166 | retval = 0; |
| 3167 | break; |
| 3168 | } |
| 3169 | } |
| 3170 | |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 3171 | if (retval) |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3172 | goto err; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3173 | |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3174 | retval = -ENODEV; |
| 3175 | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3176 | /* check if backup driver exists */ |
| 3177 | for (i = 0; i < MAX_NR_CON_DRIVER; i++) { |
| 3178 | con_back = ®istered_con_driver[i]; |
| 3179 | |
| 3180 | if (con_back->con && |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3181 | !(con_back->flag & CON_DRIVER_FLAG_MODULE)) { |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3182 | defcsw = con_back->con; |
| 3183 | retval = 0; |
| 3184 | break; |
| 3185 | } |
| 3186 | } |
| 3187 | |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 3188 | if (retval) |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3189 | goto err; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3190 | |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 3191 | if (!con_is_bound(csw)) |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3192 | goto err; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3193 | |
| 3194 | first = max(first, con_driver->first); |
| 3195 | last = min(last, con_driver->last); |
| 3196 | |
| 3197 | for (i = first; i <= last; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3198 | if (con_driver_map[i] == csw) { |
| 3199 | module_put(csw->owner); |
| 3200 | con_driver_map[i] = NULL; |
| 3201 | } |
Antonino A. Daplas | 1c8ce27 | 2006-06-26 00:27:03 -0700 | [diff] [blame] | 3202 | } |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3203 | |
| 3204 | if (!con_is_bound(defcsw)) { |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3205 | const struct consw *defconsw = conswitchp; |
| 3206 | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3207 | defcsw->con_startup(); |
| 3208 | con_back->flag |= CON_DRIVER_FLAG_INIT; |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3209 | /* |
| 3210 | * vgacon may change the default driver to point |
| 3211 | * to dummycon, we restore it here... |
| 3212 | */ |
| 3213 | conswitchp = defconsw; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3214 | } |
| 3215 | |
| 3216 | if (!con_is_bound(csw)) |
| 3217 | con_driver->flag &= ~CON_DRIVER_FLAG_INIT; |
| 3218 | |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3219 | /* ignore return value, binding should not fail */ |
Alan Cox | 50e244c | 2013-01-25 10:28:15 +1000 | [diff] [blame] | 3220 | do_bind_con_driver(defcsw, first, last, deflt); |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3221 | err: |
| 3222 | module_put(owner); |
| 3223 | return retval; |
| 3224 | |
| 3225 | } |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 3226 | EXPORT_SYMBOL_GPL(do_unbind_con_driver); |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3227 | |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3228 | static int vt_bind(struct con_driver *con) |
| 3229 | { |
| 3230 | const struct consw *defcsw = NULL, *csw = NULL; |
| 3231 | int i, more = 1, first = -1, last = -1, deflt = 0; |
| 3232 | |
| 3233 | if (!con->con || !(con->flag & CON_DRIVER_FLAG_MODULE) || |
| 3234 | con_is_graphics(con->con, con->first, con->last)) |
| 3235 | goto err; |
| 3236 | |
| 3237 | csw = con->con; |
| 3238 | |
| 3239 | for (i = 0; i < MAX_NR_CON_DRIVER; i++) { |
| 3240 | struct con_driver *con = ®istered_con_driver[i]; |
| 3241 | |
| 3242 | if (con->con && !(con->flag & CON_DRIVER_FLAG_MODULE)) { |
| 3243 | defcsw = con->con; |
| 3244 | break; |
| 3245 | } |
| 3246 | } |
| 3247 | |
| 3248 | if (!defcsw) |
| 3249 | goto err; |
| 3250 | |
| 3251 | while (more) { |
| 3252 | more = 0; |
| 3253 | |
| 3254 | for (i = con->first; i <= con->last; i++) { |
| 3255 | if (con_driver_map[i] == defcsw) { |
| 3256 | if (first == -1) |
| 3257 | first = i; |
| 3258 | last = i; |
| 3259 | more = 1; |
| 3260 | } else if (first != -1) |
| 3261 | break; |
| 3262 | } |
| 3263 | |
| 3264 | if (first == 0 && last == MAX_NR_CONSOLES -1) |
| 3265 | deflt = 1; |
| 3266 | |
| 3267 | if (first != -1) |
| 3268 | bind_con_driver(csw, first, last, deflt); |
| 3269 | |
| 3270 | first = -1; |
| 3271 | last = -1; |
| 3272 | deflt = 0; |
| 3273 | } |
| 3274 | |
| 3275 | err: |
| 3276 | return 0; |
| 3277 | } |
| 3278 | |
| 3279 | static int vt_unbind(struct con_driver *con) |
| 3280 | { |
| 3281 | const struct consw *csw = NULL; |
| 3282 | int i, more = 1, first = -1, last = -1, deflt = 0; |
| 3283 | |
| 3284 | if (!con->con || !(con->flag & CON_DRIVER_FLAG_MODULE) || |
| 3285 | con_is_graphics(con->con, con->first, con->last)) |
| 3286 | goto err; |
| 3287 | |
| 3288 | csw = con->con; |
| 3289 | |
| 3290 | while (more) { |
| 3291 | more = 0; |
| 3292 | |
| 3293 | for (i = con->first; i <= con->last; i++) { |
| 3294 | if (con_driver_map[i] == csw) { |
| 3295 | if (first == -1) |
| 3296 | first = i; |
| 3297 | last = i; |
| 3298 | more = 1; |
| 3299 | } else if (first != -1) |
| 3300 | break; |
| 3301 | } |
| 3302 | |
| 3303 | if (first == 0 && last == MAX_NR_CONSOLES -1) |
| 3304 | deflt = 1; |
| 3305 | |
| 3306 | if (first != -1) |
| 3307 | unbind_con_driver(csw, first, last, deflt); |
| 3308 | |
| 3309 | first = -1; |
| 3310 | last = -1; |
| 3311 | deflt = 0; |
| 3312 | } |
| 3313 | |
| 3314 | err: |
| 3315 | return 0; |
| 3316 | } |
Antonino A. Daplas | 13ae664 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3317 | #else |
| 3318 | static inline int vt_bind(struct con_driver *con) |
| 3319 | { |
| 3320 | return 0; |
| 3321 | } |
| 3322 | static inline int vt_unbind(struct con_driver *con) |
| 3323 | { |
| 3324 | return 0; |
| 3325 | } |
| 3326 | #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3327 | |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3328 | static ssize_t store_bind(struct device *dev, struct device_attribute *attr, |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3329 | const char *buf, size_t count) |
| 3330 | { |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3331 | struct con_driver *con = dev_get_drvdata(dev); |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3332 | int bind = simple_strtoul(buf, NULL, 0); |
| 3333 | |
| 3334 | if (bind) |
| 3335 | vt_bind(con); |
| 3336 | else |
| 3337 | vt_unbind(con); |
| 3338 | |
| 3339 | return count; |
| 3340 | } |
| 3341 | |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3342 | static ssize_t show_bind(struct device *dev, struct device_attribute *attr, |
| 3343 | char *buf) |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3344 | { |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3345 | struct con_driver *con = dev_get_drvdata(dev); |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3346 | int bind = con_is_bound(con->con); |
| 3347 | |
| 3348 | return snprintf(buf, PAGE_SIZE, "%i\n", bind); |
| 3349 | } |
| 3350 | |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3351 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, |
| 3352 | char *buf) |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3353 | { |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3354 | struct con_driver *con = dev_get_drvdata(dev); |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3355 | |
| 3356 | return snprintf(buf, PAGE_SIZE, "%s %s\n", |
| 3357 | (con->flag & CON_DRIVER_FLAG_MODULE) ? "(M)" : "(S)", |
| 3358 | con->desc); |
| 3359 | |
| 3360 | } |
| 3361 | |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3362 | static struct device_attribute device_attrs[] = { |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3363 | __ATTR(bind, S_IRUGO|S_IWUSR, show_bind, store_bind), |
| 3364 | __ATTR(name, S_IRUGO, show_name, NULL), |
| 3365 | }; |
| 3366 | |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3367 | static int vtconsole_init_device(struct con_driver *con) |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3368 | { |
| 3369 | int i; |
Antonino A. Daplas | 928e964 | 2006-10-03 01:14:49 -0700 | [diff] [blame] | 3370 | int error = 0; |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3371 | |
Antonino A. Daplas | 928e964 | 2006-10-03 01:14:49 -0700 | [diff] [blame] | 3372 | con->flag |= CON_DRIVER_FLAG_ATTR; |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3373 | dev_set_drvdata(con->dev, con); |
| 3374 | for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { |
| 3375 | error = device_create_file(con->dev, &device_attrs[i]); |
Antonino A. Daplas | 928e964 | 2006-10-03 01:14:49 -0700 | [diff] [blame] | 3376 | if (error) |
| 3377 | break; |
| 3378 | } |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3379 | |
Antonino A. Daplas | 928e964 | 2006-10-03 01:14:49 -0700 | [diff] [blame] | 3380 | if (error) { |
| 3381 | while (--i >= 0) |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3382 | device_remove_file(con->dev, &device_attrs[i]); |
Antonino A. Daplas | 928e964 | 2006-10-03 01:14:49 -0700 | [diff] [blame] | 3383 | con->flag &= ~CON_DRIVER_FLAG_ATTR; |
| 3384 | } |
| 3385 | |
| 3386 | return error; |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3387 | } |
| 3388 | |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3389 | static void vtconsole_deinit_device(struct con_driver *con) |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3390 | { |
| 3391 | int i; |
| 3392 | |
Antonino A. Daplas | 928e964 | 2006-10-03 01:14:49 -0700 | [diff] [blame] | 3393 | if (con->flag & CON_DRIVER_FLAG_ATTR) { |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3394 | for (i = 0; i < ARRAY_SIZE(device_attrs); i++) |
| 3395 | device_remove_file(con->dev, &device_attrs[i]); |
Antonino A. Daplas | 928e964 | 2006-10-03 01:14:49 -0700 | [diff] [blame] | 3396 | con->flag &= ~CON_DRIVER_FLAG_ATTR; |
| 3397 | } |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3398 | } |
| 3399 | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3400 | /** |
| 3401 | * con_is_bound - checks if driver is bound to the console |
| 3402 | * @csw: console driver |
| 3403 | * |
| 3404 | * RETURNS: zero if unbound, nonzero if bound |
| 3405 | * |
| 3406 | * Drivers can call this and if zero, they should release |
| 3407 | * all resources allocated on con_startup() |
| 3408 | */ |
| 3409 | int con_is_bound(const struct consw *csw) |
| 3410 | { |
| 3411 | int i, bound = 0; |
| 3412 | |
| 3413 | for (i = 0; i < MAX_NR_CONSOLES; i++) { |
| 3414 | if (con_driver_map[i] == csw) { |
| 3415 | bound = 1; |
| 3416 | break; |
| 3417 | } |
| 3418 | } |
| 3419 | |
| 3420 | return bound; |
| 3421 | } |
| 3422 | EXPORT_SYMBOL(con_is_bound); |
| 3423 | |
| 3424 | /** |
Jesse Barnes | b45cfba | 2010-08-05 09:22:30 -0500 | [diff] [blame] | 3425 | * con_debug_enter - prepare the console for the kernel debugger |
| 3426 | * @sw: console driver |
| 3427 | * |
| 3428 | * Called when the console is taken over by the kernel debugger, this |
| 3429 | * function needs to save the current console state, then put the console |
| 3430 | * into a state suitable for the kernel debugger. |
| 3431 | * |
| 3432 | * RETURNS: |
| 3433 | * Zero on success, nonzero if a failure occurred when trying to prepare |
| 3434 | * the console for the debugger. |
| 3435 | */ |
| 3436 | int con_debug_enter(struct vc_data *vc) |
| 3437 | { |
| 3438 | int ret = 0; |
| 3439 | |
| 3440 | saved_fg_console = fg_console; |
| 3441 | saved_last_console = last_console; |
| 3442 | saved_want_console = want_console; |
| 3443 | saved_vc_mode = vc->vc_mode; |
Jason Wessel | beed533 | 2010-08-16 15:58:31 -0500 | [diff] [blame] | 3444 | saved_console_blanked = console_blanked; |
Jesse Barnes | b45cfba | 2010-08-05 09:22:30 -0500 | [diff] [blame] | 3445 | vc->vc_mode = KD_TEXT; |
| 3446 | console_blanked = 0; |
| 3447 | if (vc->vc_sw->con_debug_enter) |
| 3448 | ret = vc->vc_sw->con_debug_enter(vc); |
Jason Wessel | 81d4450 | 2010-08-05 09:22:30 -0500 | [diff] [blame] | 3449 | #ifdef CONFIG_KGDB_KDB |
| 3450 | /* Set the initial LINES variable if it is not already set */ |
| 3451 | if (vc->vc_rows < 999) { |
| 3452 | int linecount; |
| 3453 | char lns[4]; |
| 3454 | const char *setargs[3] = { |
| 3455 | "set", |
| 3456 | "LINES", |
| 3457 | lns, |
| 3458 | }; |
| 3459 | if (kdbgetintenv(setargs[0], &linecount)) { |
| 3460 | snprintf(lns, 4, "%i", vc->vc_rows); |
| 3461 | kdb_set(2, setargs); |
| 3462 | } |
| 3463 | } |
Jason Wessel | 17b572e8 | 2012-08-26 22:37:03 -0500 | [diff] [blame] | 3464 | if (vc->vc_cols < 999) { |
| 3465 | int colcount; |
| 3466 | char cols[4]; |
| 3467 | const char *setargs[3] = { |
| 3468 | "set", |
| 3469 | "COLUMNS", |
| 3470 | cols, |
| 3471 | }; |
| 3472 | if (kdbgetintenv(setargs[0], &colcount)) { |
| 3473 | snprintf(cols, 4, "%i", vc->vc_cols); |
| 3474 | kdb_set(2, setargs); |
| 3475 | } |
| 3476 | } |
Jason Wessel | 81d4450 | 2010-08-05 09:22:30 -0500 | [diff] [blame] | 3477 | #endif /* CONFIG_KGDB_KDB */ |
Jesse Barnes | b45cfba | 2010-08-05 09:22:30 -0500 | [diff] [blame] | 3478 | return ret; |
| 3479 | } |
| 3480 | EXPORT_SYMBOL_GPL(con_debug_enter); |
| 3481 | |
| 3482 | /** |
| 3483 | * con_debug_leave - restore console state |
| 3484 | * @sw: console driver |
| 3485 | * |
| 3486 | * Restore the console state to what it was before the kernel debugger |
| 3487 | * was invoked. |
| 3488 | * |
| 3489 | * RETURNS: |
| 3490 | * Zero on success, nonzero if a failure occurred when trying to restore |
| 3491 | * the console. |
| 3492 | */ |
| 3493 | int con_debug_leave(void) |
| 3494 | { |
| 3495 | struct vc_data *vc; |
| 3496 | int ret = 0; |
| 3497 | |
| 3498 | fg_console = saved_fg_console; |
| 3499 | last_console = saved_last_console; |
| 3500 | want_console = saved_want_console; |
Jason Wessel | beed533 | 2010-08-16 15:58:31 -0500 | [diff] [blame] | 3501 | console_blanked = saved_console_blanked; |
Jesse Barnes | b45cfba | 2010-08-05 09:22:30 -0500 | [diff] [blame] | 3502 | vc_cons[fg_console].d->vc_mode = saved_vc_mode; |
| 3503 | |
| 3504 | vc = vc_cons[fg_console].d; |
| 3505 | if (vc->vc_sw->con_debug_leave) |
| 3506 | ret = vc->vc_sw->con_debug_leave(vc); |
| 3507 | return ret; |
| 3508 | } |
| 3509 | EXPORT_SYMBOL_GPL(con_debug_leave); |
| 3510 | |
Alan Cox | 50e244c | 2013-01-25 10:28:15 +1000 | [diff] [blame] | 3511 | static int do_register_con_driver(const struct consw *csw, int first, int last) |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3512 | { |
| 3513 | struct module *owner = csw->owner; |
| 3514 | struct con_driver *con_driver; |
| 3515 | const char *desc; |
| 3516 | int i, retval = 0; |
| 3517 | |
Alan Cox | 50e244c | 2013-01-25 10:28:15 +1000 | [diff] [blame] | 3518 | WARN_CONSOLE_UNLOCKED(); |
| 3519 | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3520 | if (!try_module_get(owner)) |
| 3521 | return -ENODEV; |
| 3522 | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3523 | for (i = 0; i < MAX_NR_CON_DRIVER; i++) { |
| 3524 | con_driver = ®istered_con_driver[i]; |
| 3525 | |
| 3526 | /* already registered */ |
| 3527 | if (con_driver->con == csw) |
Dave Airlie | c55c63c | 2011-01-07 09:57:41 +1000 | [diff] [blame] | 3528 | retval = -EBUSY; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3529 | } |
| 3530 | |
| 3531 | if (retval) |
| 3532 | goto err; |
| 3533 | |
| 3534 | desc = csw->con_startup(); |
| 3535 | |
| 3536 | if (!desc) |
| 3537 | goto err; |
| 3538 | |
| 3539 | retval = -EINVAL; |
| 3540 | |
| 3541 | for (i = 0; i < MAX_NR_CON_DRIVER; i++) { |
| 3542 | con_driver = ®istered_con_driver[i]; |
| 3543 | |
| 3544 | if (con_driver->con == NULL) { |
| 3545 | con_driver->con = csw; |
| 3546 | con_driver->desc = desc; |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3547 | con_driver->node = i; |
| 3548 | con_driver->flag = CON_DRIVER_FLAG_MODULE | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3549 | CON_DRIVER_FLAG_INIT; |
| 3550 | con_driver->first = first; |
| 3551 | con_driver->last = last; |
| 3552 | retval = 0; |
| 3553 | break; |
| 3554 | } |
| 3555 | } |
| 3556 | |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3557 | if (retval) |
| 3558 | goto err; |
| 3559 | |
Alan Cox | d81ed10 | 2008-10-13 10:41:42 +0100 | [diff] [blame] | 3560 | con_driver->dev = device_create(vtconsole_class, NULL, |
Greg Kroah-Hartman | 47aa579 | 2008-05-21 12:52:33 -0700 | [diff] [blame] | 3561 | MKDEV(0, con_driver->node), |
| 3562 | NULL, "vtcon%i", |
| 3563 | con_driver->node); |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3564 | |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3565 | if (IS_ERR(con_driver->dev)) { |
| 3566 | printk(KERN_WARNING "Unable to create device for %s; " |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3567 | "errno = %ld\n", con_driver->desc, |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3568 | PTR_ERR(con_driver->dev)); |
| 3569 | con_driver->dev = NULL; |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3570 | } else { |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3571 | vtconsole_init_device(con_driver); |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3572 | } |
Antonino A. Daplas | 928e964 | 2006-10-03 01:14:49 -0700 | [diff] [blame] | 3573 | |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3574 | err: |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3575 | module_put(owner); |
| 3576 | return retval; |
| 3577 | } |
Alan Cox | 50e244c | 2013-01-25 10:28:15 +1000 | [diff] [blame] | 3578 | |
| 3579 | /** |
| 3580 | * register_con_driver - register console driver to console layer |
| 3581 | * @csw: console driver |
| 3582 | * @first: the first console to take over, minimum value is 0 |
| 3583 | * @last: the last console to take over, maximum value is MAX_NR_CONSOLES -1 |
| 3584 | * |
| 3585 | * DESCRIPTION: This function registers a console driver which can later |
| 3586 | * bind to a range of consoles specified by @first and @last. It will |
| 3587 | * also initialize the console driver by calling con_startup(). |
| 3588 | */ |
| 3589 | int register_con_driver(const struct consw *csw, int first, int last) |
| 3590 | { |
| 3591 | int retval; |
| 3592 | |
| 3593 | console_lock(); |
| 3594 | retval = do_register_con_driver(csw, first, last); |
| 3595 | console_unlock(); |
| 3596 | return retval; |
| 3597 | } |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3598 | EXPORT_SYMBOL(register_con_driver); |
| 3599 | |
| 3600 | /** |
| 3601 | * unregister_con_driver - unregister console driver from console layer |
| 3602 | * @csw: console driver |
| 3603 | * |
| 3604 | * DESCRIPTION: All drivers that registers to the console layer must |
| 3605 | * call this function upon exit, or if the console driver is in a state |
| 3606 | * where it won't be able to handle console services, such as the |
| 3607 | * framebuffer console without loaded framebuffer drivers. |
| 3608 | * |
| 3609 | * The driver must unbind first prior to unregistration. |
| 3610 | */ |
| 3611 | int unregister_con_driver(const struct consw *csw) |
| 3612 | { |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 3613 | int retval; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3614 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 3615 | console_lock(); |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 3616 | retval = do_unregister_con_driver(csw); |
| 3617 | console_unlock(); |
| 3618 | return retval; |
| 3619 | } |
| 3620 | EXPORT_SYMBOL(unregister_con_driver); |
| 3621 | |
| 3622 | int do_unregister_con_driver(const struct consw *csw) |
| 3623 | { |
| 3624 | int i, retval = -ENODEV; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3625 | |
| 3626 | /* cannot unregister a bound driver */ |
| 3627 | if (con_is_bound(csw)) |
| 3628 | goto err; |
| 3629 | |
| 3630 | for (i = 0; i < MAX_NR_CON_DRIVER; i++) { |
| 3631 | struct con_driver *con_driver = ®istered_con_driver[i]; |
| 3632 | |
| 3633 | if (con_driver->con == csw && |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3634 | con_driver->flag & CON_DRIVER_FLAG_MODULE) { |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3635 | vtconsole_deinit_device(con_driver); |
| 3636 | device_destroy(vtconsole_class, |
| 3637 | MKDEV(0, con_driver->node)); |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3638 | con_driver->con = NULL; |
| 3639 | con_driver->desc = NULL; |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3640 | con_driver->dev = NULL; |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3641 | con_driver->node = 0; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3642 | con_driver->flag = 0; |
| 3643 | con_driver->first = 0; |
| 3644 | con_driver->last = 0; |
| 3645 | retval = 0; |
| 3646 | break; |
| 3647 | } |
| 3648 | } |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3649 | err: |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3650 | return retval; |
| 3651 | } |
Takashi Iwai | e93a9a8 | 2013-01-25 10:28:18 +1000 | [diff] [blame] | 3652 | EXPORT_SYMBOL_GPL(do_unregister_con_driver); |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3653 | |
| 3654 | /* |
| 3655 | * If we support more console drivers, this function is used |
| 3656 | * when a driver wants to take over some existing consoles |
| 3657 | * and become default driver for newly opened ones. |
| 3658 | * |
Alan Cox | 50e244c | 2013-01-25 10:28:15 +1000 | [diff] [blame] | 3659 | * take_over_console is basically a register followed by unbind |
| 3660 | */ |
| 3661 | int do_take_over_console(const struct consw *csw, int first, int last, int deflt) |
| 3662 | { |
| 3663 | int err; |
| 3664 | |
| 3665 | err = do_register_con_driver(csw, first, last); |
| 3666 | /* |
| 3667 | * If we get an busy error we still want to bind the console driver |
| 3668 | * and return success, as we may have unbound the console driver |
| 3669 | * but not unregistered it. |
| 3670 | */ |
| 3671 | if (err == -EBUSY) |
| 3672 | err = 0; |
| 3673 | if (!err) |
| 3674 | do_bind_con_driver(csw, first, last, deflt); |
| 3675 | |
| 3676 | return err; |
| 3677 | } |
| 3678 | EXPORT_SYMBOL_GPL(do_take_over_console); |
| 3679 | |
| 3680 | /* |
| 3681 | * If we support more console drivers, this function is used |
| 3682 | * when a driver wants to take over some existing consoles |
| 3683 | * and become default driver for newly opened ones. |
| 3684 | * |
| 3685 | * take_over_console is basically a register followed by unbind |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3686 | */ |
| 3687 | int take_over_console(const struct consw *csw, int first, int last, int deflt) |
| 3688 | { |
| 3689 | int err; |
| 3690 | |
| 3691 | err = register_con_driver(csw, first, last); |
Alan Cox | 50e244c | 2013-01-25 10:28:15 +1000 | [diff] [blame] | 3692 | /* |
| 3693 | * If we get an busy error we still want to bind the console driver |
Dave Airlie | c55c63c | 2011-01-07 09:57:41 +1000 | [diff] [blame] | 3694 | * and return success, as we may have unbound the console driver |
Alan Cox | 50e244c | 2013-01-25 10:28:15 +1000 | [diff] [blame] | 3695 | * but not unregistered it. |
| 3696 | */ |
Dave Airlie | c55c63c | 2011-01-07 09:57:41 +1000 | [diff] [blame] | 3697 | if (err == -EBUSY) |
| 3698 | err = 0; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3699 | if (!err) |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3700 | bind_con_driver(csw, first, last, deflt); |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3701 | |
| 3702 | return err; |
| 3703 | } |
| 3704 | |
| 3705 | /* |
| 3706 | * give_up_console is a wrapper to unregister_con_driver. It will only |
| 3707 | * work if driver is fully unbound. |
| 3708 | */ |
| 3709 | void give_up_console(const struct consw *csw) |
| 3710 | { |
| 3711 | unregister_con_driver(csw); |
| 3712 | } |
| 3713 | |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3714 | static int __init vtconsole_class_init(void) |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3715 | { |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3716 | int i; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3717 | |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3718 | vtconsole_class = class_create(THIS_MODULE, "vtconsole"); |
| 3719 | if (IS_ERR(vtconsole_class)) { |
| 3720 | printk(KERN_WARNING "Unable to create vt console class; " |
| 3721 | "errno = %ld\n", PTR_ERR(vtconsole_class)); |
| 3722 | vtconsole_class = NULL; |
| 3723 | } |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3724 | |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3725 | /* Add system drivers to sysfs */ |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3726 | for (i = 0; i < MAX_NR_CON_DRIVER; i++) { |
| 3727 | struct con_driver *con = ®istered_con_driver[i]; |
| 3728 | |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3729 | if (con->con && !con->dev) { |
Alan Cox | d81ed10 | 2008-10-13 10:41:42 +0100 | [diff] [blame] | 3730 | con->dev = device_create(vtconsole_class, NULL, |
Greg Kroah-Hartman | 47aa579 | 2008-05-21 12:52:33 -0700 | [diff] [blame] | 3731 | MKDEV(0, con->node), |
| 3732 | NULL, "vtcon%i", |
| 3733 | con->node); |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3734 | |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3735 | if (IS_ERR(con->dev)) { |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3736 | printk(KERN_WARNING "Unable to create " |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3737 | "device for %s; errno = %ld\n", |
| 3738 | con->desc, PTR_ERR(con->dev)); |
| 3739 | con->dev = NULL; |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3740 | } else { |
Greg Kroah-Hartman | 805952a | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 3741 | vtconsole_init_device(con); |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3742 | } |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3743 | } |
| 3744 | } |
| 3745 | |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3746 | return 0; |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3747 | } |
Antonino A. Daplas | 6db4063 | 2006-06-26 00:27:12 -0700 | [diff] [blame] | 3748 | postcore_initcall(vtconsole_class_init); |
| 3749 | |
| 3750 | #endif |
Antonino A. Daplas | 3e795de | 2006-06-26 00:27:08 -0700 | [diff] [blame] | 3751 | |
| 3752 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3753 | * Screen blanking |
| 3754 | */ |
| 3755 | |
Yoichi Yuasa | 403aac9 | 2006-12-06 20:38:38 -0800 | [diff] [blame] | 3756 | static int set_vesa_blanking(char __user *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3757 | { |
Yoichi Yuasa | 403aac9 | 2006-12-06 20:38:38 -0800 | [diff] [blame] | 3758 | unsigned int mode; |
| 3759 | |
| 3760 | if (get_user(mode, p + 1)) |
| 3761 | return -EFAULT; |
| 3762 | |
| 3763 | vesa_blank_mode = (mode < 4) ? mode : 0; |
| 3764 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3765 | } |
| 3766 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3767 | void do_blank_screen(int entering_gfx) |
| 3768 | { |
| 3769 | struct vc_data *vc = vc_cons[fg_console].d; |
| 3770 | int i; |
| 3771 | |
| 3772 | WARN_CONSOLE_UNLOCKED(); |
| 3773 | |
| 3774 | if (console_blanked) { |
| 3775 | if (blank_state == blank_vesa_wait) { |
| 3776 | blank_state = blank_off; |
Ville Syrjala | d060a32 | 2006-01-09 20:53:49 -0800 | [diff] [blame] | 3777 | vc->vc_sw->con_blank(vc, vesa_blank_mode + 1, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3778 | } |
| 3779 | return; |
| 3780 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3781 | |
| 3782 | /* entering graphics mode? */ |
| 3783 | if (entering_gfx) { |
| 3784 | hide_cursor(vc); |
| 3785 | save_screen(vc); |
| 3786 | vc->vc_sw->con_blank(vc, -1, 1); |
| 3787 | console_blanked = fg_console + 1; |
izumi | b6e8f00 | 2007-07-17 04:05:49 -0700 | [diff] [blame] | 3788 | blank_state = blank_off; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3789 | set_origin(vc); |
| 3790 | return; |
| 3791 | } |
| 3792 | |
izumi | b6e8f00 | 2007-07-17 04:05:49 -0700 | [diff] [blame] | 3793 | if (blank_state != blank_normal_wait) |
| 3794 | return; |
| 3795 | blank_state = blank_off; |
| 3796 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3797 | /* don't blank graphics */ |
| 3798 | if (vc->vc_mode != KD_TEXT) { |
| 3799 | console_blanked = fg_console + 1; |
| 3800 | return; |
| 3801 | } |
| 3802 | |
| 3803 | hide_cursor(vc); |
| 3804 | del_timer_sync(&console_timer); |
| 3805 | blank_timer_expired = 0; |
| 3806 | |
| 3807 | save_screen(vc); |
| 3808 | /* In case we need to reset origin, blanking hook returns 1 */ |
Ville Syrjala | d060a32 | 2006-01-09 20:53:49 -0800 | [diff] [blame] | 3809 | i = vc->vc_sw->con_blank(vc, vesa_off_interval ? 1 : (vesa_blank_mode + 1), 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3810 | console_blanked = fg_console + 1; |
| 3811 | if (i) |
| 3812 | set_origin(vc); |
| 3813 | |
| 3814 | if (console_blank_hook && console_blank_hook(1)) |
| 3815 | return; |
| 3816 | |
Ville Syrjala | d060a32 | 2006-01-09 20:53:49 -0800 | [diff] [blame] | 3817 | if (vesa_off_interval && vesa_blank_mode) { |
Nishanth Aravamudan | 030baba | 2005-07-15 03:56:25 -0700 | [diff] [blame] | 3818 | blank_state = blank_vesa_wait; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3819 | mod_timer(&console_timer, jiffies + vesa_off_interval); |
| 3820 | } |
Alan Cox | 8b92e87 | 2009-09-19 13:13:24 -0700 | [diff] [blame] | 3821 | vt_event_post(VT_EVENT_BLANK, vc->vc_num, vc->vc_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3822 | } |
| 3823 | EXPORT_SYMBOL(do_blank_screen); |
| 3824 | |
| 3825 | /* |
| 3826 | * Called by timer as well as from vt_console_driver |
| 3827 | */ |
| 3828 | void do_unblank_screen(int leaving_gfx) |
| 3829 | { |
| 3830 | struct vc_data *vc; |
| 3831 | |
| 3832 | /* This should now always be called from a "sane" (read: can schedule) |
| 3833 | * context for the sake of the low level drivers, except in the special |
| 3834 | * case of oops_in_progress |
| 3835 | */ |
| 3836 | if (!oops_in_progress) |
| 3837 | might_sleep(); |
| 3838 | |
| 3839 | WARN_CONSOLE_UNLOCKED(); |
| 3840 | |
| 3841 | ignore_poke = 0; |
| 3842 | if (!console_blanked) |
| 3843 | return; |
| 3844 | if (!vc_cons_allocated(fg_console)) { |
| 3845 | /* impossible */ |
Mandeep Singh Baines | 1ffdda9 | 2011-02-06 09:31:53 -0800 | [diff] [blame] | 3846 | pr_warning("unblank_screen: tty %d not allocated ??\n", |
| 3847 | fg_console+1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3848 | return; |
| 3849 | } |
| 3850 | vc = vc_cons[fg_console].d; |
Jesse Barnes | 8fd4bd2 | 2010-06-23 12:56:12 -0700 | [diff] [blame] | 3851 | /* Try to unblank in oops case too */ |
| 3852 | if (vc->vc_mode != KD_TEXT && !vt_force_oops_output(vc)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3853 | return; /* but leave console_blanked != 0 */ |
| 3854 | |
| 3855 | if (blankinterval) { |
Daniel Mack | f324edc | 2009-06-16 15:33:52 -0700 | [diff] [blame] | 3856 | mod_timer(&console_timer, jiffies + (blankinterval * HZ)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3857 | blank_state = blank_normal_wait; |
| 3858 | } |
| 3859 | |
| 3860 | console_blanked = 0; |
Jesse Barnes | 8fd4bd2 | 2010-06-23 12:56:12 -0700 | [diff] [blame] | 3861 | if (vc->vc_sw->con_blank(vc, 0, leaving_gfx) || vt_force_oops_output(vc)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3862 | /* Low-level driver cannot restore -> do it ourselves */ |
| 3863 | update_screen(vc); |
| 3864 | if (console_blank_hook) |
| 3865 | console_blank_hook(0); |
| 3866 | set_palette(vc); |
| 3867 | set_cursor(vc); |
Alan Cox | 8b92e87 | 2009-09-19 13:13:24 -0700 | [diff] [blame] | 3868 | vt_event_post(VT_EVENT_UNBLANK, vc->vc_num, vc->vc_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3869 | } |
| 3870 | EXPORT_SYMBOL(do_unblank_screen); |
| 3871 | |
| 3872 | /* |
| 3873 | * This is called by the outside world to cause a forced unblank, mostly for |
| 3874 | * oopses. Currently, I just call do_unblank_screen(0), but we could eventually |
| 3875 | * call it with 1 as an argument and so force a mode restore... that may kill |
| 3876 | * X or at least garbage the screen but would also make the Oops visible... |
| 3877 | */ |
| 3878 | void unblank_screen(void) |
| 3879 | { |
| 3880 | do_unblank_screen(0); |
| 3881 | } |
| 3882 | |
| 3883 | /* |
Ingo Molnar | 70522e1 | 2006-03-23 03:00:31 -0800 | [diff] [blame] | 3884 | * We defer the timer blanking to work queue so it can take the console mutex |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3885 | * (console operations can still happen at irq time, but only from printk which |
Ingo Molnar | 70522e1 | 2006-03-23 03:00:31 -0800 | [diff] [blame] | 3886 | * has the console mutex. Not perfect yet, but better than no locking |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3887 | */ |
| 3888 | static void blank_screen_t(unsigned long dummy) |
| 3889 | { |
Jan Beulich | cc63b1e | 2005-06-17 13:20:58 -0700 | [diff] [blame] | 3890 | if (unlikely(!keventd_up())) { |
Daniel Mack | f324edc | 2009-06-16 15:33:52 -0700 | [diff] [blame] | 3891 | mod_timer(&console_timer, jiffies + (blankinterval * HZ)); |
Jan Beulich | cc63b1e | 2005-06-17 13:20:58 -0700 | [diff] [blame] | 3892 | return; |
| 3893 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3894 | blank_timer_expired = 1; |
| 3895 | schedule_work(&console_work); |
| 3896 | } |
| 3897 | |
| 3898 | void poke_blanked_console(void) |
| 3899 | { |
| 3900 | WARN_CONSOLE_UNLOCKED(); |
| 3901 | |
| 3902 | /* Add this so we quickly catch whoever might call us in a non |
| 3903 | * safe context. Nowadays, unblank_screen() isn't to be called in |
| 3904 | * atomic contexts and is allowed to schedule (with the special case |
| 3905 | * of oops_in_progress, but that isn't of any concern for this |
| 3906 | * function. --BenH. |
| 3907 | */ |
| 3908 | might_sleep(); |
| 3909 | |
| 3910 | /* This isn't perfectly race free, but a race here would be mostly harmless, |
| 3911 | * at worse, we'll do a spurrious blank and it's unlikely |
| 3912 | */ |
| 3913 | del_timer(&console_timer); |
| 3914 | blank_timer_expired = 0; |
| 3915 | |
| 3916 | if (ignore_poke || !vc_cons[fg_console].d || vc_cons[fg_console].d->vc_mode == KD_GRAPHICS) |
| 3917 | return; |
| 3918 | if (console_blanked) |
| 3919 | unblank_screen(); |
| 3920 | else if (blankinterval) { |
Daniel Mack | f324edc | 2009-06-16 15:33:52 -0700 | [diff] [blame] | 3921 | mod_timer(&console_timer, jiffies + (blankinterval * HZ)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3922 | blank_state = blank_normal_wait; |
| 3923 | } |
| 3924 | } |
| 3925 | |
| 3926 | /* |
| 3927 | * Palettes |
| 3928 | */ |
| 3929 | |
| 3930 | static void set_palette(struct vc_data *vc) |
| 3931 | { |
| 3932 | WARN_CONSOLE_UNLOCKED(); |
| 3933 | |
| 3934 | if (vc->vc_mode != KD_GRAPHICS) |
| 3935 | vc->vc_sw->con_set_palette(vc, color_table); |
| 3936 | } |
| 3937 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3938 | /* |
| 3939 | * Load palette into the DAC registers. arg points to a colour |
| 3940 | * map, 3 bytes per colour, 16 colours, range from 0 to 255. |
| 3941 | */ |
| 3942 | |
| 3943 | int con_set_cmap(unsigned char __user *arg) |
| 3944 | { |
Michael Gehring | 871bdea | 2012-03-21 01:26:45 +0100 | [diff] [blame] | 3945 | int i, j, k; |
| 3946 | unsigned char colormap[3*16]; |
| 3947 | |
| 3948 | if (copy_from_user(colormap, arg, sizeof(colormap))) |
| 3949 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3950 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 3951 | console_lock(); |
Michael Gehring | 871bdea | 2012-03-21 01:26:45 +0100 | [diff] [blame] | 3952 | for (i = k = 0; i < 16; i++) { |
| 3953 | default_red[i] = colormap[k++]; |
| 3954 | default_grn[i] = colormap[k++]; |
| 3955 | default_blu[i] = colormap[k++]; |
| 3956 | } |
| 3957 | for (i = 0; i < MAX_NR_CONSOLES; i++) { |
| 3958 | if (!vc_cons_allocated(i)) |
| 3959 | continue; |
| 3960 | for (j = k = 0; j < 16; j++) { |
| 3961 | vc_cons[i].d->vc_palette[k++] = default_red[j]; |
| 3962 | vc_cons[i].d->vc_palette[k++] = default_grn[j]; |
| 3963 | vc_cons[i].d->vc_palette[k++] = default_blu[j]; |
| 3964 | } |
| 3965 | set_palette(vc_cons[i].d); |
| 3966 | } |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 3967 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3968 | |
Michael Gehring | 871bdea | 2012-03-21 01:26:45 +0100 | [diff] [blame] | 3969 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3970 | } |
| 3971 | |
| 3972 | int con_get_cmap(unsigned char __user *arg) |
| 3973 | { |
Michael Gehring | 871bdea | 2012-03-21 01:26:45 +0100 | [diff] [blame] | 3974 | int i, k; |
| 3975 | unsigned char colormap[3*16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3976 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 3977 | console_lock(); |
Michael Gehring | 871bdea | 2012-03-21 01:26:45 +0100 | [diff] [blame] | 3978 | for (i = k = 0; i < 16; i++) { |
| 3979 | colormap[k++] = default_red[i]; |
| 3980 | colormap[k++] = default_grn[i]; |
| 3981 | colormap[k++] = default_blu[i]; |
| 3982 | } |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 3983 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3984 | |
Michael Gehring | 871bdea | 2012-03-21 01:26:45 +0100 | [diff] [blame] | 3985 | if (copy_to_user(arg, colormap, sizeof(colormap))) |
| 3986 | return -EFAULT; |
| 3987 | |
| 3988 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3989 | } |
| 3990 | |
| 3991 | void reset_palette(struct vc_data *vc) |
| 3992 | { |
| 3993 | int j, k; |
| 3994 | for (j=k=0; j<16; j++) { |
| 3995 | vc->vc_palette[k++] = default_red[j]; |
| 3996 | vc->vc_palette[k++] = default_grn[j]; |
| 3997 | vc->vc_palette[k++] = default_blu[j]; |
| 3998 | } |
| 3999 | set_palette(vc); |
| 4000 | } |
| 4001 | |
| 4002 | /* |
| 4003 | * Font switching |
| 4004 | * |
| 4005 | * Currently we only support fonts up to 32 pixels wide, at a maximum height |
| 4006 | * of 32 pixels. Userspace fontdata is stored with 32 bytes (shorts/ints, |
| 4007 | * depending on width) reserved for each character which is kinda wasty, but |
| 4008 | * this is done in order to maintain compatibility with the EGA/VGA fonts. It |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 4009 | * is up to the actual low-level console-driver convert data into its favorite |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4010 | * format (maybe we should add a `fontoffset' field to the `display' |
| 4011 | * structure so we won't have to convert the fontdata all the time. |
| 4012 | * /Jes |
| 4013 | */ |
| 4014 | |
| 4015 | #define max_font_size 65536 |
| 4016 | |
| 4017 | static int con_font_get(struct vc_data *vc, struct console_font_op *op) |
| 4018 | { |
| 4019 | struct console_font font; |
| 4020 | int rc = -EINVAL; |
| 4021 | int c; |
| 4022 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4023 | if (op->data) { |
| 4024 | font.data = kmalloc(max_font_size, GFP_KERNEL); |
| 4025 | if (!font.data) |
| 4026 | return -ENOMEM; |
| 4027 | } else |
| 4028 | font.data = NULL; |
| 4029 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 4030 | console_lock(); |
Alan Cox | edab558 | 2012-03-02 14:59:08 +0000 | [diff] [blame] | 4031 | if (vc->vc_mode != KD_TEXT) |
| 4032 | rc = -EINVAL; |
| 4033 | else if (vc->vc_sw->con_font_get) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4034 | rc = vc->vc_sw->con_font_get(vc, &font); |
| 4035 | else |
| 4036 | rc = -ENOSYS; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 4037 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4038 | |
| 4039 | if (rc) |
| 4040 | goto out; |
| 4041 | |
| 4042 | c = (font.width+7)/8 * 32 * font.charcount; |
Alan Cox | 04f378b | 2008-04-30 00:53:29 -0700 | [diff] [blame] | 4043 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4044 | if (op->data && font.charcount > op->charcount) |
| 4045 | rc = -ENOSPC; |
| 4046 | if (!(op->flags & KD_FONT_FLAG_OLD)) { |
| 4047 | if (font.width > op->width || font.height > op->height) |
| 4048 | rc = -ENOSPC; |
| 4049 | } else { |
| 4050 | if (font.width != 8) |
| 4051 | rc = -EIO; |
| 4052 | else if ((op->height && font.height > op->height) || |
| 4053 | font.height > 32) |
| 4054 | rc = -ENOSPC; |
| 4055 | } |
| 4056 | if (rc) |
| 4057 | goto out; |
| 4058 | |
| 4059 | op->height = font.height; |
| 4060 | op->width = font.width; |
| 4061 | op->charcount = font.charcount; |
| 4062 | |
| 4063 | if (op->data && copy_to_user(op->data, font.data, c)) |
| 4064 | rc = -EFAULT; |
| 4065 | |
| 4066 | out: |
| 4067 | kfree(font.data); |
| 4068 | return rc; |
| 4069 | } |
| 4070 | |
| 4071 | static int con_font_set(struct vc_data *vc, struct console_font_op *op) |
| 4072 | { |
| 4073 | struct console_font font; |
| 4074 | int rc = -EINVAL; |
| 4075 | int size; |
| 4076 | |
| 4077 | if (vc->vc_mode != KD_TEXT) |
| 4078 | return -EINVAL; |
| 4079 | if (!op->data) |
| 4080 | return -EINVAL; |
| 4081 | if (op->charcount > 512) |
| 4082 | return -EINVAL; |
| 4083 | if (!op->height) { /* Need to guess font height [compat] */ |
| 4084 | int h, i; |
| 4085 | u8 __user *charmap = op->data; |
| 4086 | u8 tmp; |
| 4087 | |
| 4088 | /* If from KDFONTOP ioctl, don't allow things which can be done in userland, |
| 4089 | so that we can get rid of this soon */ |
| 4090 | if (!(op->flags & KD_FONT_FLAG_OLD)) |
| 4091 | return -EINVAL; |
| 4092 | for (h = 32; h > 0; h--) |
| 4093 | for (i = 0; i < op->charcount; i++) { |
| 4094 | if (get_user(tmp, &charmap[32*i+h-1])) |
| 4095 | return -EFAULT; |
| 4096 | if (tmp) |
| 4097 | goto nonzero; |
| 4098 | } |
| 4099 | return -EINVAL; |
| 4100 | nonzero: |
| 4101 | op->height = h; |
| 4102 | } |
| 4103 | if (op->width <= 0 || op->width > 32 || op->height > 32) |
| 4104 | return -EINVAL; |
| 4105 | size = (op->width+7)/8 * 32 * op->charcount; |
| 4106 | if (size > max_font_size) |
| 4107 | return -ENOSPC; |
| 4108 | font.charcount = op->charcount; |
| 4109 | font.height = op->height; |
| 4110 | font.width = op->width; |
Julia Lawall | 9b71ca2 | 2010-05-26 14:42:11 -0700 | [diff] [blame] | 4111 | font.data = memdup_user(op->data, size); |
| 4112 | if (IS_ERR(font.data)) |
| 4113 | return PTR_ERR(font.data); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 4114 | console_lock(); |
Alan Cox | edab558 | 2012-03-02 14:59:08 +0000 | [diff] [blame] | 4115 | if (vc->vc_mode != KD_TEXT) |
| 4116 | rc = -EINVAL; |
| 4117 | else if (vc->vc_sw->con_font_set) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4118 | rc = vc->vc_sw->con_font_set(vc, &font, op->flags); |
| 4119 | else |
| 4120 | rc = -ENOSYS; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 4121 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4122 | kfree(font.data); |
| 4123 | return rc; |
| 4124 | } |
| 4125 | |
| 4126 | static int con_font_default(struct vc_data *vc, struct console_font_op *op) |
| 4127 | { |
| 4128 | struct console_font font = {.width = op->width, .height = op->height}; |
| 4129 | char name[MAX_FONT_NAME]; |
| 4130 | char *s = name; |
| 4131 | int rc; |
| 4132 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4133 | |
| 4134 | if (!op->data) |
| 4135 | s = NULL; |
| 4136 | else if (strncpy_from_user(name, op->data, MAX_FONT_NAME - 1) < 0) |
| 4137 | return -EFAULT; |
| 4138 | else |
| 4139 | name[MAX_FONT_NAME - 1] = 0; |
| 4140 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 4141 | console_lock(); |
Alan Cox | edab558 | 2012-03-02 14:59:08 +0000 | [diff] [blame] | 4142 | if (vc->vc_mode != KD_TEXT) { |
| 4143 | console_unlock(); |
| 4144 | return -EINVAL; |
| 4145 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4146 | if (vc->vc_sw->con_font_default) |
| 4147 | rc = vc->vc_sw->con_font_default(vc, &font, s); |
| 4148 | else |
| 4149 | rc = -ENOSYS; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 4150 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4151 | if (!rc) { |
| 4152 | op->width = font.width; |
| 4153 | op->height = font.height; |
| 4154 | } |
| 4155 | return rc; |
| 4156 | } |
| 4157 | |
| 4158 | static int con_font_copy(struct vc_data *vc, struct console_font_op *op) |
| 4159 | { |
| 4160 | int con = op->height; |
| 4161 | int rc; |
| 4162 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4163 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 4164 | console_lock(); |
Alan Cox | edab558 | 2012-03-02 14:59:08 +0000 | [diff] [blame] | 4165 | if (vc->vc_mode != KD_TEXT) |
| 4166 | rc = -EINVAL; |
| 4167 | else if (!vc->vc_sw->con_font_copy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4168 | rc = -ENOSYS; |
| 4169 | else if (con < 0 || !vc_cons_allocated(con)) |
| 4170 | rc = -ENOTTY; |
| 4171 | else if (con == vc->vc_num) /* nothing to do */ |
| 4172 | rc = 0; |
| 4173 | else |
| 4174 | rc = vc->vc_sw->con_font_copy(vc, con); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 4175 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4176 | return rc; |
| 4177 | } |
| 4178 | |
| 4179 | int con_font_op(struct vc_data *vc, struct console_font_op *op) |
| 4180 | { |
| 4181 | switch (op->op) { |
| 4182 | case KD_FONT_OP_SET: |
| 4183 | return con_font_set(vc, op); |
| 4184 | case KD_FONT_OP_GET: |
| 4185 | return con_font_get(vc, op); |
| 4186 | case KD_FONT_OP_SET_DEFAULT: |
| 4187 | return con_font_default(vc, op); |
| 4188 | case KD_FONT_OP_COPY: |
| 4189 | return con_font_copy(vc, op); |
| 4190 | } |
| 4191 | return -ENOSYS; |
| 4192 | } |
| 4193 | |
| 4194 | /* |
| 4195 | * Interface exported to selection and vcs. |
| 4196 | */ |
| 4197 | |
| 4198 | /* used by selection */ |
| 4199 | u16 screen_glyph(struct vc_data *vc, int offset) |
| 4200 | { |
| 4201 | u16 w = scr_readw(screenpos(vc, offset, 1)); |
| 4202 | u16 c = w & 0xff; |
| 4203 | |
| 4204 | if (w & vc->vc_hi_font_mask) |
| 4205 | c |= 0x100; |
| 4206 | return c; |
| 4207 | } |
Samuel Thibault | f7511d5 | 2008-04-30 00:54:51 -0700 | [diff] [blame] | 4208 | EXPORT_SYMBOL_GPL(screen_glyph); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4209 | |
| 4210 | /* used by vcs - note the word offset */ |
| 4211 | unsigned short *screen_pos(struct vc_data *vc, int w_offset, int viewed) |
| 4212 | { |
| 4213 | return screenpos(vc, 2 * w_offset, viewed); |
| 4214 | } |
| 4215 | |
| 4216 | void getconsxy(struct vc_data *vc, unsigned char *p) |
| 4217 | { |
| 4218 | p[0] = vc->vc_x; |
| 4219 | p[1] = vc->vc_y; |
| 4220 | } |
| 4221 | |
| 4222 | void putconsxy(struct vc_data *vc, unsigned char *p) |
| 4223 | { |
Antonino A. Daplas | 9477e26 | 2006-02-01 03:06:52 -0800 | [diff] [blame] | 4224 | hide_cursor(vc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4225 | gotoxy(vc, p[0], p[1]); |
| 4226 | set_cursor(vc); |
| 4227 | } |
| 4228 | |
| 4229 | u16 vcs_scr_readw(struct vc_data *vc, const u16 *org) |
| 4230 | { |
| 4231 | if ((unsigned long)org == vc->vc_pos && softcursor_original != -1) |
| 4232 | return softcursor_original; |
| 4233 | return scr_readw(org); |
| 4234 | } |
| 4235 | |
| 4236 | void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org) |
| 4237 | { |
| 4238 | scr_writew(val, org); |
| 4239 | if ((unsigned long)org == vc->vc_pos) { |
| 4240 | softcursor_original = -1; |
| 4241 | add_softcursor(vc); |
| 4242 | } |
| 4243 | } |
| 4244 | |
Nicolas Pitre | 432c9ed | 2010-10-01 00:10:44 -0400 | [diff] [blame] | 4245 | void vcs_scr_updated(struct vc_data *vc) |
| 4246 | { |
| 4247 | notify_update(vc); |
| 4248 | } |
| 4249 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4250 | /* |
| 4251 | * Visible symbols for modules |
| 4252 | */ |
| 4253 | |
| 4254 | EXPORT_SYMBOL(color_table); |
| 4255 | EXPORT_SYMBOL(default_red); |
| 4256 | EXPORT_SYMBOL(default_grn); |
| 4257 | EXPORT_SYMBOL(default_blu); |
| 4258 | EXPORT_SYMBOL(update_region); |
| 4259 | EXPORT_SYMBOL(redraw_screen); |
| 4260 | EXPORT_SYMBOL(vc_resize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4261 | EXPORT_SYMBOL(fg_console); |
| 4262 | EXPORT_SYMBOL(console_blank_hook); |
| 4263 | EXPORT_SYMBOL(console_blanked); |
| 4264 | EXPORT_SYMBOL(vc_cons); |
Matthew Garrett | f6c06b6 | 2009-11-13 15:14:11 -0500 | [diff] [blame] | 4265 | EXPORT_SYMBOL(global_cursor_default); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4266 | #ifndef VT_SINGLE_DRIVER |
| 4267 | EXPORT_SYMBOL(take_over_console); |
| 4268 | EXPORT_SYMBOL(give_up_console); |
| 4269 | #endif |