2 * Copyright (c) 1995-1998 Søren Schmidt
5 * This code is derived from software contributed to The DragonFly Project
6 * by Sascha Wildner <saw@online.de>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer,
13 * without modification, immediately at the beginning of the file.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 * $FreeBSD: src/sys/dev/syscons/syscons.h,v 1.60.2.6 2002/09/15 22:30:45 dd Exp $
32 * $DragonFly: src/sys/dev/misc/syscons/syscons.h,v 1.11 2005/02/18 16:38:23 swildner Exp $
35 #ifndef _DEV_SYSCONS_SYSCONS_H_
36 #define _DEV_SYSCONS_SYSCONS_H_
38 /* default values for configuration options */
41 #define MAXCONS 16 /* power of 2 */
46 #define SC_NO_CUTPASTE 1
49 #ifdef SC_NO_MODE_CHANGE
53 /* Always load font data if the pixel (raster text) mode is to be used. */
55 #undef SC_NO_FONT_LOADING
59 * If font data is not available, the `arrow'-shaped mouse cursor cannot
60 * be drawn. Use the alternative drawing method.
62 #ifdef SC_NO_FONT_LOADING
63 #undef SC_ALT_MOUSE_IMAGE
64 #define SC_ALT_MOUSE_IMAGE 1
67 #ifndef SC_CURSOR_CHAR
68 #define SC_CURSOR_CHAR (0x07)
72 #define SC_MOUSE_CHAR (0xd0)
75 #if SC_MOUSE_CHAR <= SC_CURSOR_CHAR && SC_CURSOR_CHAR < (SC_MOUSE_CHAR + 4)
77 #define SC_CURSOR_CHAR (SC_MOUSE_CHAR + 4)
80 #ifndef SC_DEBUG_LEVEL
81 #define SC_DEBUG_LEVEL 0
84 #define DPRINTF(l, p) if (SC_DEBUG_LEVEL >= (l)) printf p
86 #define SC_DRIVER_NAME "sc"
87 #define SC_VTY(dev) minor(dev)
88 #define SC_DEV(sc, vty) ((sc)->dev[(vty) - (sc)->first_vty])
89 #define SC_STAT(dev) ((scr_stat *)(dev)->si_drv1)
93 #define PRINTABLE(ch) ((ch) > 0x1b || ((ch) > 0x0d && (ch) < 0x1b) \
97 /* macros for "intelligent" screen update */
98 #define mark_for_update(scp, x) {\
99 if ((x) < scp->start) scp->start = (x);\
100 else if ((x) > scp->end) scp->end = (x);\
102 #define mark_all(scp) {\
104 scp->end = scp->xsize * scp->ysize - 1;\
107 /* macro for calculating the drawing position in video memory */
109 #define VIDEO_MEMORY_POS(scp, pos, x) \
110 ((scp)->sc->adp->va_window + \
111 (x) * (scp)->xoff + \
112 (scp)->yoff * (scp)->font_size * (scp)->sc->adp->va_line_width +\
113 (x) * ((pos) % (scp)->xsize) + \
114 (scp)->font_size * (scp)->sc->adp->va_line_width * (pos / (scp)->xsize))
117 /* vty status flags (scp->status) */
118 #define UNKNOWN_MODE 0x00010 /* unknown video mode */
119 #define SWITCH_WAIT_REL 0x00080 /* waiting for vty release */
120 #define SWITCH_WAIT_ACQ 0x00100 /* waiting for vty ack */
121 #define BUFFER_SAVED 0x00200 /* vty buffer is saved */
122 #define CURSOR_ENABLED 0x00400 /* text cursor is enabled */
123 #define MOUSE_MOVED 0x01000 /* mouse cursor has moved */
124 #define MOUSE_CUTTING 0x02000 /* mouse cursor is cutting text */
125 #define MOUSE_VISIBLE 0x04000 /* mouse cursor is showing */
126 #define GRAPHICS_MODE 0x08000 /* vty is in a graphics mode */
127 #define PIXEL_MODE 0x10000 /* vty is in a raster text mode */
128 #define SAVER_RUNNING 0x20000 /* screen saver is running */
129 #define VR_CURSOR_BLINK 0x40000 /* blinking text cursor */
130 #define VR_CURSOR_ON 0x80000 /* text cursor is on */
131 #define MOUSE_HIDDEN 0x100000 /* mouse cursor is temporarily hidden */
140 #ifndef BELL_DURATION
141 #define BELL_DURATION ((5 * hz + 99) / 100)
142 #define BELL_PITCH 800
145 /* virtual terminal buffer */
146 typedef struct sc_vtb {
148 #define VTB_VALID (1 << 0)
149 #define VTB_ALLOCED (1 << 1)
151 #define VTB_INVALID 0
153 #define VTB_FRAMEBUFFER 2
154 #define VTB_RINGBUFFER 3
158 vm_offset_t vtb_buffer;
159 int vtb_tail; /* valid for VTB_RINGBUFFER only */
165 struct video_adapter;
169 typedef struct sc_softc {
170 int unit; /* unit # */
171 int config; /* configuration flags */
172 #define SC_VESA800X600 (1 << 7)
173 #define SC_AUTODETECT_KBD (1 << 8)
174 #define SC_KERNEL_CONSOLE (1 << 9)
176 int flags; /* status flags */
177 #define SC_VISUAL_BELL (1 << 0)
178 #define SC_QUIET_BELL (1 << 1)
179 #define SC_BLINK_CURSOR (1 << 2)
180 #define SC_CHAR_CURSOR (1 << 3)
181 #define SC_MOUSE_ENABLED (1 << 4)
182 #define SC_SCRN_IDLE (1 << 5)
183 #define SC_SCRN_BLANKED (1 << 6)
184 #define SC_SAVER_FAILED (1 << 7)
185 #define SC_SCRN_VTYLOCK (1 << 8)
187 #define SC_INIT_DONE (1 << 16)
188 #define SC_SPLASH_SCRN (1 << 17)
190 int keyboard; /* -1 if unavailable */
191 struct keyboard *kbd;
194 struct video_adapter *adp;
195 int initial_mode; /* initial video mode */
200 struct scr_stat *cur_scp;
201 struct scr_stat *new_scp;
202 struct scr_stat *old_scp;
203 int delayed_next_scr;
205 char font_loading_in_progress;
206 char switch_in_progress;
207 char videoio_in_progress;
208 char write_in_progress;
209 char blink_in_progress;
211 long scrn_time_stamp;
212 struct callout scrn_timer_ch;
218 u_char scr_rmap[256];
220 #ifdef _SC_MD_SOFTC_DECLARED_
221 sc_md_softc_t md; /* machine dependent vars */
224 #ifndef SC_NO_PALETTE_LOADING
225 u_char palette[256*3];
228 #ifndef SC_NO_FONT_LOADING
244 typedef struct scr_stat {
245 int index; /* index of this vty */
246 struct sc_softc *sc; /* pointer to softc */
247 struct sc_rndr_sw *rndr; /* renderer */
251 int xpos; /* current X position */
252 int ypos; /* current Y position */
253 int xsize; /* X text size */
254 int ysize; /* Y text size */
255 int xpixel; /* X graphics size */
256 int ypixel; /* Y graphics size */
257 int xoff; /* X offset in pixel mode */
258 int yoff; /* Y offset in pixel mode */
260 u_char *font; /* current font */
261 int font_size; /* fontsize in Y direction */
263 int start; /* modified area start */
264 int end; /* modified area end */
266 struct sc_term_sw *tsw;
269 int status; /* status (bitfield) */
270 int kbd_mode; /* keyboard I/O mode */
272 int cursor_pos; /* cursor buffer position */
273 int cursor_oldpos; /* cursor old buffer position */
274 u_short cursor_saveunder_char; /* saved char under cursor */
275 u_short cursor_saveunder_attr; /* saved attr under cursor */
276 char cursor_base; /* cursor base line # */
277 char cursor_height; /* cursor height */
279 int mouse_pos; /* mouse buffer position */
280 int mouse_oldpos; /* mouse old buffer position */
281 short mouse_xpos; /* mouse x coordinate */
282 short mouse_ypos; /* mouse y coordinate */
283 short mouse_oldxpos; /* mouse previous x coordinate */
284 short mouse_oldypos; /* mouse previous y coordinate */
285 short mouse_buttons; /* mouse buttons */
286 int mouse_cut_start; /* mouse cut start pos */
287 int mouse_cut_end; /* mouse cut end pos */
288 struct proc *mouse_proc; /* proc* of controlling proc */
289 pid_t mouse_pid; /* pid of controlling proc */
290 int mouse_signal; /* signal # to report with */
292 u_short bell_duration;
295 struct callout blink_screen_ch;
297 uint32_t ega_palette[16]; /* ega palette */
298 u_char border; /* border color */
300 pid_t pid; /* pid of controlling proc */
301 struct proc *proc; /* proc* of controlling proc */
302 struct vt_mode smode; /* switch mode */
304 sc_vtb_t *history; /* circular history buffer */
305 int history_pos; /* position shown on screen */
306 int history_size; /* size of history buffer */
308 int splash_save_mode; /* saved mode for splash screen */
309 int splash_save_status; /* saved status for splash screen */
310 #ifdef _SCR_MD_STAT_DECLARED_
311 scr_md_stat_t md; /* machine dependent vars */
316 #define SC_NORM_ATTR (FG_LIGHTGREY | BG_BLACK)
318 #ifndef SC_NORM_REV_ATTR
319 #define SC_NORM_REV_ATTR (FG_BLACK | BG_LIGHTGREY)
321 #ifndef SC_KERNEL_CONS_ATTR
322 #define SC_KERNEL_CONS_ATTR (FG_WHITE | BG_BLACK)
324 #ifndef SC_KERNEL_CONS_REV_ATTR
325 #define SC_KERNEL_CONS_REV_ATTR (FG_BLACK | BG_LIGHTGREY)
328 /* terminal emulator */
331 #define SC_DFLT_TERM "*" /* any */
334 typedef int sc_term_init_t(scr_stat *scp, void **tcp, int code);
335 #define SC_TE_COLD_INIT 0
336 #define SC_TE_WARM_INIT 1
337 typedef int sc_term_term_t(scr_stat *scp, void **tcp);
338 typedef void sc_term_puts_t(scr_stat *scp, u_char *buf, int len);
339 typedef int sc_term_ioctl_t(scr_stat *scp, struct tty *tp, u_long cmd,
340 caddr_t data, int flag, struct thread *td);
341 typedef int sc_term_reset_t(scr_stat *scp, int code);
342 #define SC_TE_HARD_RESET 0
343 #define SC_TE_SOFT_RESET 1
344 typedef void sc_term_default_attr_t(scr_stat *scp, int norm, int rev);
345 typedef void sc_term_clear_t(scr_stat *scp);
346 typedef void sc_term_notify_t(scr_stat *scp, int event);
347 #define SC_TE_NOTIFY_VTSWITCH_IN 0
348 #define SC_TE_NOTIFY_VTSWITCH_OUT 1
349 typedef int sc_term_input_t(scr_stat *scp, int c, struct tty *tp);
351 typedef struct sc_term_sw {
352 LIST_ENTRY(sc_term_sw) link;
353 char *te_name; /* name of the emulator */
354 char *te_desc; /* description */
355 char *te_renderer; /* matching renderer */
356 size_t te_size; /* size of internal buffer */
357 int te_refcount; /* reference counter */
358 sc_term_init_t *te_init;
359 sc_term_term_t *te_term;
360 sc_term_puts_t *te_puts;
361 sc_term_ioctl_t *te_ioctl;
362 sc_term_reset_t *te_reset;
363 sc_term_default_attr_t *te_default_attr;
364 sc_term_clear_t *te_clear;
365 sc_term_notify_t *te_notify;
366 sc_term_input_t *te_input;
369 extern struct linker_set scterm_set;
371 #define SCTERM_MODULE(name, sw) \
372 DATA_SET(scterm_set, sw); \
374 scterm_##name##_event(module_t mod, int type, void *data) \
378 return sc_term_add(&sw); \
380 if (sw.te_refcount > 0) \
382 return sc_term_remove(&sw); \
388 static moduledata_t scterm_##name##_mod = { \
390 scterm_##name##_event, \
393 DECLARE_MODULE(scterm_##name, scterm_##name##_mod, \
394 SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
396 /* renderer function table */
397 typedef void vr_init_t(scr_stat *scp);
398 typedef void vr_clear_t(scr_stat *scp, int c, int attr);
399 typedef void vr_draw_border_t(scr_stat *scp, int color);
400 typedef void vr_draw_t(scr_stat *scp, int from, int count, int flip);
401 typedef void vr_set_cursor_t(scr_stat *scp, int base, int height, int blink);
402 typedef void vr_draw_cursor_t(scr_stat *scp, int at, int blink,
404 typedef void vr_blink_cursor_t(scr_stat *scp, int at, int flip);
405 typedef void vr_set_mouse_t(scr_stat *scp);
406 typedef void vr_draw_mouse_t(scr_stat *scp, int x, int y, int on);
408 typedef struct sc_rndr_sw {
411 vr_draw_border_t *draw_border;
413 vr_set_cursor_t *set_cursor;
414 vr_draw_cursor_t *draw_cursor;
415 vr_blink_cursor_t *blink_cursor;
416 vr_set_mouse_t *set_mouse;
417 vr_draw_mouse_t *draw_mouse;
420 typedef struct sc_renderer {
423 sc_rndr_sw_t *rndrsw;
424 LIST_ENTRY(sc_renderer) link;
427 extern struct linker_set scrndr_set;
429 #define RENDERER(name, mode, sw, set) \
430 static struct sc_renderer scrndr_##name##_##mode = { \
433 DATA_SET(scrndr_set, scrndr_##name##_##mode); \
434 DATA_SET(set, scrndr_##name##_##mode)
436 #define RENDERER_MODULE(name, set) \
437 SET_DECLARE(set, sc_renderer_t); \
439 scrndr_##name##_event(module_t mod, int type, void *data) \
441 sc_renderer_t **list; \
445 SET_FOREACH(list, set) { \
446 error = sc_render_add(*list); \
452 SET_FOREACH(list, set) { \
453 error = sc_render_remove(*list); \
463 static moduledata_t scrndr_##name##_mod = { \
465 scrndr_##name##_event, \
468 DECLARE_MODULE(scrndr_##name, scrndr_##name##_mod, \
469 SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
479 #define ISTEXTSC(scp) (!((scp)->status \
480 & (UNKNOWN_MODE | GRAPHICS_MODE | PIXEL_MODE)))
481 #define ISGRAPHSC(scp) (((scp)->status \
482 & (UNKNOWN_MODE | GRAPHICS_MODE)))
483 #define ISPIXELSC(scp) (((scp)->status \
484 & (UNKNOWN_MODE | GRAPHICS_MODE | PIXEL_MODE))\
486 #define ISUNKNOWNSC(scp) ((scp)->status & UNKNOWN_MODE)
488 #define ISMOUSEAVAIL(af) ((af) & V_ADP_FONT)
489 #define ISFONTAVAIL(af) ((af) & V_ADP_FONT)
490 #define ISPALAVAIL(af) ((af) & V_ADP_PALETTE)
492 #define ISSIGVALID(sig) ((sig) > 0 && (sig) < NSIG)
494 #define kbd_read_char(kbd, wait) \
495 (*kbdsw[(kbd)->kb_index]->read_char)((kbd), (wait))
496 #define kbd_check_char(kbd) \
497 (*kbdsw[(kbd)->kb_index]->check_char)((kbd))
498 #define kbd_enable(kbd) \
499 (*kbdsw[(kbd)->kb_index]->enable)((kbd))
500 #define kbd_disable(kbd) \
501 (*kbdsw[(kbd)->kb_index]->disable)((kbd))
502 #define kbd_lock(kbd, lockf) \
503 (*kbdsw[(kbd)->kb_index]->lock)((kbd), (lockf))
504 #define kbd_ioctl(kbd, cmd, arg) \
506 ENODEV : (*kbdsw[(kbd)->kb_index]->ioctl)((kbd), (cmd), (arg)))
507 #define kbd_clear_state(kbd) \
508 (*kbdsw[(kbd)->kb_index]->clear_state)((kbd))
509 #define kbd_get_fkeystr(kbd, fkey, len) \
510 (*kbdsw[(kbd)->kb_index]->get_fkeystr)((kbd), (fkey), (len))
511 #define kbd_poll(kbd, on) \
512 (*kbdsw[(kbd)->kb_index]->poll)((kbd), (on))
515 extern int (*sc_user_ioctl)(dev_t dev, u_long cmd, caddr_t data,
516 int flag, struct thread *td);
518 int sc_probe_unit(int unit, int flags);
519 int sc_attach_unit(int unit, int flags);
521 int set_mode(scr_stat *scp);
522 void refresh_ega_palette(scr_stat *scp);
524 void sc_set_border(scr_stat *scp, int color);
525 void sc_load_font(scr_stat *scp, int page, int size, u_char *font,
526 int base, int count);
527 void sc_save_font(scr_stat *scp, int page, int size, u_char *font,
528 int base, int count);
529 void sc_show_font(scr_stat *scp, int page);
531 void sc_touch_scrn_saver(void);
532 void sc_puts(scr_stat *scp, u_char *buf, int len);
533 void sc_draw_cursor_image(scr_stat *scp);
534 void sc_remove_cursor_image(scr_stat *scp);
535 void sc_set_cursor_image(scr_stat *scp);
536 int sc_clean_up(scr_stat *scp);
537 int sc_switch_scr(sc_softc_t *sc, u_int next_scr);
538 void sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard);
539 int sc_init_emulator(scr_stat *scp, char *name);
540 void sc_paste(scr_stat *scp, u_char *p, int count);
541 void sc_bell(scr_stat *scp, int pitch, int duration);
544 #ifndef SC_NO_HISTORY
545 int sc_alloc_history_buffer(scr_stat *scp, int lines,
546 int prev_ysize, int wait);
547 void sc_free_history_buffer(scr_stat *scp, int prev_ysize);
548 void sc_hist_save(scr_stat *scp);
549 #define sc_hist_save_one_line(scp, from) \
550 sc_vtb_append(&(scp)->vtb, (from), (scp)->history, (scp)->xsize)
551 int sc_hist_restore(scr_stat *scp);
552 void sc_hist_home(scr_stat *scp);
553 void sc_hist_end(scr_stat *scp);
554 int sc_hist_up_line(scr_stat *scp);
555 int sc_hist_down_line(scr_stat *scp);
556 int sc_hist_ioctl(struct tty *tp, u_long cmd, caddr_t data,
557 int flag, struct thread *td);
558 #endif /* SC_NO_HISTORY */
561 #ifndef SC_NO_CUTPASTE
562 void sc_alloc_cut_buffer(scr_stat *scp, int wait);
563 void sc_draw_mouse_image(scr_stat *scp);
564 void sc_remove_mouse_image(scr_stat *scp);
565 int sc_inside_cutmark(scr_stat *scp, int pos);
566 void sc_remove_cutmarking(scr_stat *scp);
567 void sc_remove_all_cutmarkings(sc_softc_t *scp);
568 void sc_remove_all_mouse(sc_softc_t *scp);
570 #define sc_draw_mouse_image(scp)
571 #define sc_remove_mouse_image(scp)
572 #define sc_inside_cutmark(scp, pos) FALSE
573 #define sc_remove_cutmarking(scp)
574 #define sc_remove_all_cutmarkings(scp)
575 #define sc_remove_all_mouse(scp)
576 #endif /* SC_NO_CUTPASTE */
577 #ifndef SC_NO_SYSMOUSE
578 void sc_mouse_move(scr_stat *scp, int x, int y);
579 int sc_mouse_ioctl(struct tty *tp, u_long cmd, caddr_t data,
580 int flag, struct thread *td);
581 #endif /* SC_NO_SYSMOUSE */
584 int sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode,
585 int xsize, int ysize, int fontsize);
586 int sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode);
587 int sc_set_pixel_mode(scr_stat *scp, struct tty *tp,
588 int xsize, int ysize, int fontsize);
589 int sc_vid_ioctl(struct tty *tp, u_long cmd, caddr_t data, int flag,
592 int sc_render_add(sc_renderer_t *rndr);
593 int sc_render_remove(sc_renderer_t *rndr);
594 sc_rndr_sw_t *sc_render_match(scr_stat *scp, char *name, int mode);
597 void sc_vtb_init(sc_vtb_t *vtb, int type, int cols, int rows,
598 void *buffer, int wait);
599 void sc_vtb_destroy(sc_vtb_t *vtb);
600 size_t sc_vtb_size(int cols, int rows);
601 void sc_vtb_clear(sc_vtb_t *vtb, int c, int attr);
603 int sc_vtb_getc(sc_vtb_t *vtb, int at);
604 int sc_vtb_geta(sc_vtb_t *vtb, int at);
605 void sc_vtb_putc(sc_vtb_t *vtb, int at, int c, int a);
606 vm_offset_t sc_vtb_putchar(sc_vtb_t *vtb, vm_offset_t p, int c, int a);
607 vm_offset_t sc_vtb_pointer(sc_vtb_t *vtb, int at);
608 int sc_vtb_pos(sc_vtb_t *vtb, int pos, int offset);
610 #define sc_vtb_tail(vtb) ((vtb)->vtb_tail)
611 #define sc_vtb_rows(vtb) ((vtb)->vtb_rows)
612 #define sc_vtb_cols(vtb) ((vtb)->vtb_cols)
614 void sc_vtb_copy(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2, int to,
616 void sc_vtb_append(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2,
618 void sc_vtb_seek(sc_vtb_t *vtb, int pos);
619 void sc_vtb_erase(sc_vtb_t *vtb, int at, int count, int c, int attr);
620 void sc_vtb_move(sc_vtb_t *vtb, int from, int to, int count);
621 void sc_vtb_delete(sc_vtb_t *vtb, int at, int count, int c, int attr);
622 void sc_vtb_ins(sc_vtb_t *vtb, int at, int count, int c, int attr);
625 int sysmouse_event(mouse_info_t *info);
628 void sc_move_cursor(scr_stat *scp, int x, int y);
629 void sc_clear_screen(scr_stat *scp);
630 int sc_term_add(sc_term_sw_t *sw);
631 int sc_term_remove(sc_term_sw_t *sw);
632 sc_term_sw_t *sc_term_match(char *name);
633 sc_term_sw_t *sc_term_match_by_number(int index);
635 /* machine dependent functions */
636 int sc_max_unit(void);
637 sc_softc_t *sc_get_softc(int unit, int flags);
638 sc_softc_t *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd);
639 int sc_get_cons_priority(int *unit, int *flags);
640 void sc_get_bios_values(bios_values_t *values);
641 int sc_tone(int herz);
643 #endif /* !_DEV_SYSCONS_SYSCONS_H_ */