2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2007 Bruce M. Simpson.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
34 #include <sys/kernel.h>
36 #include <sys/systm.h>
37 #include <sys/types.h>
40 #include <sys/consio.h>
43 #include <dev/cfe/cfe_api.h>
44 #include <dev/cfe/cfe_error.h>
48 #ifndef CFECONS_POLL_HZ
49 #define CFECONS_POLL_HZ 4
51 #define CFEBURSTLEN 128 /* max number of bytes to write in one chunk */
53 static tsw_open_t cfe_tty_open;
54 static tsw_close_t cfe_tty_close;
55 static tsw_outwakeup_t cfe_tty_outwakeup;
57 static struct ttydevsw cfe_ttydevsw = {
58 .tsw_flags = TF_NOPREFIX,
59 .tsw_open = cfe_tty_open,
60 .tsw_close = cfe_tty_close,
61 .tsw_outwakeup = cfe_tty_outwakeup,
64 static int conhandle = -1;
65 /* XXX does cfe have to poll? */
67 static struct callout cfe_timer;
70 static int alt_break_state;
73 static void cfe_timeout(void *);
75 static cn_probe_t cfe_cnprobe;
76 static cn_init_t cfe_cninit;
77 static cn_term_t cfe_cnterm;
78 static cn_getc_t cfe_cngetc;
79 static cn_putc_t cfe_cnputc;
80 static cn_grab_t cfe_cngrab;
81 static cn_ungrab_t cfe_cnungrab;
86 cn_drvinit(void *unused)
90 if (cfe_consdev.cn_pri != CN_DEAD &&
91 cfe_consdev.cn_name[0] != '\0') {
92 tp = tty_alloc(&cfe_ttydevsw, NULL);
93 callout_init_mtx(&cfe_timer, tty_getlock(tp), 0);
94 tty_makedev(tp, NULL, "cfecons");
99 cfe_tty_open(struct tty *tp)
101 polltime = hz / CFECONS_POLL_HZ;
104 callout_reset(&cfe_timer, polltime, cfe_timeout, tp);
110 cfe_tty_close(struct tty *tp)
113 callout_stop(&cfe_timer);
117 cfe_tty_outwakeup(struct tty *tp)
119 int len, written, rc;
120 u_char buf[CFEBURSTLEN];
123 len = ttydisc_getc(tp, buf, sizeof buf);
128 while (written < len) {
129 rc = cfe_write(conhandle, &buf[written], len - written);
143 tp = (struct tty *)v;
145 tty_lock_assert(tp, MA_OWNED);
146 while ((c = cfe_cngetc(NULL)) != -1)
147 ttydisc_rint(tp, c, 0);
148 ttydisc_rint_done(tp);
150 callout_reset(&cfe_timer, polltime, cfe_timeout, tp);
154 cfe_cnprobe(struct consdev *cp)
157 conhandle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE);
159 cp->cn_pri = CN_DEAD;
165 char *bootmsg = "Using CFE firmware console.\n";
168 for (i = 0; i < strlen(bootmsg); i++)
169 cfe_cnputc(cp, bootmsg[i]);
176 cfe_cninit(struct consdev *cp)
179 strcpy(cp->cn_name, "cfecons");
183 cfe_cnterm(struct consdev *cp)
189 cfe_cngrab(struct consdev *cp)
195 cfe_cnungrab(struct consdev *cp)
201 cfe_cngetc(struct consdev *cp)
205 if (cfe_read(conhandle, &ch, 1) == 1) {
207 kdb_alt_break(ch, &alt_break_state);
216 cfe_cnputc(struct consdev *cp, int c)
221 cfe_cnputc(cp, '\r');
224 while (cfe_write(conhandle, &cbuf, 1) == 0)
228 SYSINIT(cndev, SI_SUB_CONFIGURE, SI_ORDER_MIDDLE, cn_drvinit, NULL);