diff options
Diffstat (limited to 'freebsd/sys/sys/cons.h')
| -rw-r--r-- | freebsd/sys/sys/cons.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/freebsd/sys/sys/cons.h b/freebsd/sys/sys/cons.h new file mode 100644 index 00000000..78cba61e --- /dev/null +++ b/freebsd/sys/sys/cons.h @@ -0,0 +1,144 @@ +/*- + * Copyright (c) 1988 University of Utah. + * Copyright (c) 1991 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * the Systems Programming Group of the University of Utah Computer + * Science Department. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * from: @(#)cons.h 7.2 (Berkeley) 5/9/91 + * $FreeBSD$ + */ + +#ifndef _MACHINE_CONS_H_ +#define _MACHINE_CONS_H_ + +struct consdev; +struct tty; + +typedef void cn_probe_t(struct consdev *); +typedef void cn_init_t(struct consdev *); +typedef void cn_term_t(struct consdev *); +typedef void cn_grab_t(struct consdev *); +typedef void cn_ungrab_t(struct consdev *); +typedef int cn_getc_t(struct consdev *); +typedef void cn_putc_t(struct consdev *, int); + +struct consdev_ops { + cn_probe_t *cn_probe; + /* probe hardware and fill in consdev info */ + cn_init_t *cn_init; + /* turn on as console */ + cn_term_t *cn_term; + /* turn off as console */ + cn_getc_t *cn_getc; + /* kernel getchar interface */ + cn_putc_t *cn_putc; + /* kernel putchar interface */ + cn_grab_t *cn_grab; + /* grab console for exclusive kernel use */ + cn_ungrab_t *cn_ungrab; + /* ungrab console */ +}; + +struct consdev { + const struct consdev_ops *cn_ops; + /* console device operations. */ + short cn_pri; /* pecking order; the higher the better */ + void *cn_arg; /* drivers method argument */ + int cn_flags; /* capabilities of this console */ + char cn_name[SPECNAMELEN + 1]; /* console (device) name */ +}; + +/* values for cn_pri - reflect our policy for console selection */ +#define CN_DEAD 0 /* device doesn't exist */ +#define CN_LOW 1 /* device is a last restort only */ +#define CN_NORMAL 2 /* device exists but is nothing special */ +#define CN_INTERNAL 3 /* "internal" bit-mapped display */ +#define CN_REMOTE 4 /* serial interface with remote bit set */ + +/* Values for cn_flags. */ +#define CN_FLAG_NODEBUG 0x00000001 /* Not supported with debugger. */ +#define CN_FLAG_NOAVAIL 0x00000002 /* Temporarily not available. */ + +/* Visibility of characters in cngets() */ +#define GETS_NOECHO 0 /* Disable echoing of characters. */ +#define GETS_ECHO 1 /* Enable echoing of characters. */ +#define GETS_ECHOPASS 2 /* Print a * for every character. */ + +#ifdef _KERNEL + +extern struct msgbuf consmsgbuf; /* Message buffer for constty. */ +extern struct tty *constty; /* Temporary virtual console. */ + +#define CONSOLE_DEVICE(name, ops, arg) \ + static struct consdev name = { \ + .cn_ops = &ops, \ + .cn_arg = (arg), \ + }; \ + DATA_SET(cons_set, name) + +#define CONSOLE_DRIVER(name) \ + static const struct consdev_ops name##_consdev_ops = { \ + .cn_probe = name##_cnprobe, \ + .cn_init = name##_cninit, \ + .cn_term = name##_cnterm, \ + .cn_getc = name##_cngetc, \ + .cn_putc = name##_cnputc, \ + .cn_grab = name##_cngrab, \ + .cn_ungrab = name##_cnungrab, \ + }; \ + CONSOLE_DEVICE(name##_consdev, name##_consdev_ops, NULL) + +/* Other kernel entry points. */ +void cninit(void); +void cninit_finish(void); +int cnadd(struct consdev *); +void cnavailable(struct consdev *, int); +void cnremove(struct consdev *); +void cnselect(struct consdev *); +void cngrab(void); +void cnungrab(void); +int cncheckc(void); +int cngetc(void); +void cngets(char *, size_t, int); +void cnputc(int); +void cnputs(char *); +int cnunavailable(void); +void constty_set(struct tty *tp); +void constty_clear(void); + +/* sc(4) / vt(4) coexistence shim */ +#define VTY_SC 0x01 +#define VTY_VT 0x02 +int vty_enabled(unsigned int); +void vty_set_preferred(unsigned int); + +#endif /* _KERNEL */ + +#endif /* !_MACHINE_CONS_H_ */ |