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/*-
* Copyright (C) 2008 by Nathan Whitehorn. All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 TOOLS GMBH 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/priv.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/conf.h>
#include <sys/cons.h>
#include <sys/consio.h>
#include <sys/tty.h>
#include <dev/ofw/openfirm.h>
#include <ddb/ddb.h>
#include "mambocall.h"
#define MAMBOBURSTLEN 128 /* max number of bytes to write in one chunk */
#define MAMBO_CONSOLE_WRITE 0
#define MAMBO_CONSOLE_READ 60
static tsw_outwakeup_t mambotty_outwakeup;
static struct ttydevsw mambo_ttydevsw = {
.tsw_flags = TF_NOPREFIX,
.tsw_outwakeup = mambotty_outwakeup,
};
static int polltime;
static struct callout mambo_callout;
static struct tty *tp = NULL;
#if defined(KDB)
static int alt_break_state;
#endif
static void mambo_timeout(void *);
static cn_probe_t mambo_cnprobe;
static cn_init_t mambo_cninit;
static cn_term_t mambo_cnterm;
static cn_getc_t mambo_cngetc;
static cn_putc_t mambo_cnputc;
static cn_grab_t mambo_cngrab;
static cn_ungrab_t mambo_cnungrab;
CONSOLE_DRIVER(mambo);
static void
cn_drvinit(void *unused)
{
if (mambo_consdev.cn_pri != CN_DEAD &&
mambo_consdev.cn_name[0] != '\0') {
if (OF_finddevice("/mambo") == -1)
return;
tp = tty_alloc(&mambo_ttydevsw, NULL);
tty_init_console(tp, 0);
tty_makedev(tp, NULL, "%s", "mambocons");
polltime = 1;
callout_init(&mambo_callout, 1);
callout_reset(&mambo_callout, polltime, mambo_timeout, NULL);
}
}
SYSINIT(cndev, SI_SUB_CONFIGURE, SI_ORDER_MIDDLE, cn_drvinit, NULL);
static void
mambotty_outwakeup(struct tty *tp)
{
int len;
u_char buf[MAMBOBURSTLEN];
for (;;) {
len = ttydisc_getc(tp, buf, sizeof buf);
if (len == 0)
break;
mambocall(MAMBO_CONSOLE_WRITE, buf, (register_t)len, 1UL);
}
}
static void
mambo_timeout(void *v)
{
int c;
tty_lock(tp);
while ((c = mambo_cngetc(NULL)) != -1)
ttydisc_rint(tp, c, 0);
ttydisc_rint_done(tp);
tty_unlock(tp);
callout_reset(&mambo_callout, polltime, mambo_timeout, NULL);
}
static void
mambo_cnprobe(struct consdev *cp)
{
if (OF_finddevice("/mambo") == -1) {
cp->cn_pri = CN_DEAD;
return;
}
cp->cn_pri = CN_NORMAL;
}
static void
mambo_cninit(struct consdev *cp)
{
/* XXX: This is the alias, but that should be good enough */
strcpy(cp->cn_name, "mambocons");
}
static void
mambo_cnterm(struct consdev *cp)
{
}
static void
mambo_cngrab(struct consdev *cp)
{
}
static void
mambo_cnungrab(struct consdev *cp)
{
}
static int
mambo_cngetc(struct consdev *cp)
{
int ch;
ch = mambocall(MAMBO_CONSOLE_READ);
if (ch > 0 && ch < 0xff) {
#if defined(KDB)
kdb_alt_break(ch, &alt_break_state);
#endif
return (ch);
}
return (-1);
}
static void
mambo_cnputc(struct consdev *cp, int c)
{
char cbuf;
cbuf = c;
mambocall(MAMBO_CONSOLE_WRITE, &cbuf, 1UL, 1UL);
}
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