Current Path : /sys/powerpc/mambo/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/powerpc/mambo/mambo_console.c |
/*- * 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: release/9.1.0/sys/powerpc/mambo/mambo_console.c 235405 2012-05-13 17:04:46Z avg $"); #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, CALLOUT_MPSAFE); 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); }