fd90e2ed54
years for head. However, it is continuously misused as the mpsafe argument for callout_init(9). Deprecate the flag and clean up callout_init() calls to make them more consistent. Differential Revision: https://reviews.freebsd.org/D2613 Reviewed by: jhb MFC after: 2 weeks
186 lines
4.0 KiB
C
186 lines
4.0 KiB
C
/*-
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* Copyright (C) 2008 by Nathan Whitehorn. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/kdb.h>
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#include <sys/kernel.h>
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#include <sys/priv.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/conf.h>
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#include <sys/cons.h>
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#include <sys/consio.h>
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#include <sys/tty.h>
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#include <dev/ofw/openfirm.h>
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#include <ddb/ddb.h>
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#include "mambocall.h"
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#define MAMBOBURSTLEN 128 /* max number of bytes to write in one chunk */
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#define MAMBO_CONSOLE_WRITE 0
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#define MAMBO_CONSOLE_READ 60
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static tsw_outwakeup_t mambotty_outwakeup;
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static struct ttydevsw mambo_ttydevsw = {
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.tsw_flags = TF_NOPREFIX,
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.tsw_outwakeup = mambotty_outwakeup,
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};
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static int polltime;
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static struct callout mambo_callout;
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static struct tty *tp = NULL;
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#if defined(KDB)
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static int alt_break_state;
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#endif
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static void mambo_timeout(void *);
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static cn_probe_t mambo_cnprobe;
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static cn_init_t mambo_cninit;
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static cn_term_t mambo_cnterm;
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static cn_getc_t mambo_cngetc;
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static cn_putc_t mambo_cnputc;
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static cn_grab_t mambo_cngrab;
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static cn_ungrab_t mambo_cnungrab;
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CONSOLE_DRIVER(mambo);
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static void
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cn_drvinit(void *unused)
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{
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if (mambo_consdev.cn_pri != CN_DEAD &&
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mambo_consdev.cn_name[0] != '\0') {
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if (OF_finddevice("/mambo") == -1)
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return;
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tp = tty_alloc(&mambo_ttydevsw, NULL);
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tty_init_console(tp, 0);
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tty_makedev(tp, NULL, "%s", "mambocons");
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polltime = 1;
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callout_init(&mambo_callout, 1);
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callout_reset(&mambo_callout, polltime, mambo_timeout, NULL);
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}
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}
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SYSINIT(cndev, SI_SUB_CONFIGURE, SI_ORDER_MIDDLE, cn_drvinit, NULL);
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static void
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mambotty_outwakeup(struct tty *tp)
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{
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int len;
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u_char buf[MAMBOBURSTLEN];
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for (;;) {
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len = ttydisc_getc(tp, buf, sizeof buf);
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if (len == 0)
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break;
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mambocall(MAMBO_CONSOLE_WRITE, buf, (register_t)len, 1UL);
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}
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}
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static void
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mambo_timeout(void *v)
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{
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int c;
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tty_lock(tp);
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while ((c = mambo_cngetc(NULL)) != -1)
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ttydisc_rint(tp, c, 0);
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ttydisc_rint_done(tp);
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tty_unlock(tp);
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callout_reset(&mambo_callout, polltime, mambo_timeout, NULL);
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}
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static void
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mambo_cnprobe(struct consdev *cp)
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{
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if (OF_finddevice("/mambo") == -1) {
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cp->cn_pri = CN_DEAD;
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return;
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}
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cp->cn_pri = CN_NORMAL;
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}
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static void
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mambo_cninit(struct consdev *cp)
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{
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/* XXX: This is the alias, but that should be good enough */
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strcpy(cp->cn_name, "mambocons");
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}
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static void
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mambo_cnterm(struct consdev *cp)
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{
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}
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static void
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mambo_cngrab(struct consdev *cp)
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{
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}
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static void
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mambo_cnungrab(struct consdev *cp)
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{
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}
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static int
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mambo_cngetc(struct consdev *cp)
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{
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int ch;
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ch = mambocall(MAMBO_CONSOLE_READ);
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if (ch > 0 && ch < 0xff) {
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#if defined(KDB)
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kdb_alt_break(ch, &alt_break_state);
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#endif
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return (ch);
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}
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return (-1);
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}
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static void
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mambo_cnputc(struct consdev *cp, int c)
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{
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char cbuf;
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cbuf = c;
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mambocall(MAMBO_CONSOLE_WRITE, &cbuf, 1UL, 1UL);
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}
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