2 * Copyright (c) 2006 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $DragonFly: src/sys/platform/vkernel/platform/console.c,v 1.2 2007/01/07 05:45:06 dillon Exp $
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
42 #include <sys/termios.h>
43 #include <sys/fcntl.h>
47 * Global console locking functions
59 /************************************************************************
61 ************************************************************************
65 #define CDEV_MAJOR 183
67 static int vcons_tty_param(struct tty *tp, struct termios *tio);
68 static void vcons_tty_start(struct tty *tp);
70 static d_open_t vcons_open;
71 static d_close_t vcons_close;
72 static d_ioctl_t vcons_ioctl;
74 static struct dev_ops vcons_ops = {
75 { "vcons", CDEV_MAJOR, D_TTY },
77 .d_close = vcons_close,
80 .d_ioctl = vcons_ioctl,
85 vcons_open(struct dev_open_args *ap)
87 cdev_t dev = ap->a_head.a_dev;
94 tp = dev->si_tty = ttymalloc(dev->si_tty);
95 tp->t_oproc = vcons_tty_start;
96 tp->t_param = vcons_tty_param;
97 tp->t_stop = nottystop;
100 if (tp->t_state & TS_ISOPEN)
103 tp->t_state |= TS_CARR_ON;
105 tp->t_iflag = TTYDEF_IFLAG;
106 tp->t_oflag = TTYDEF_OFLAG;
107 tp->t_cflag = TTYDEF_CFLAG;
108 tp->t_lflag = TTYDEF_LFLAG;
109 tp->t_ispeed = TTYDEF_SPEED;
110 tp->t_ospeed = TTYDEF_SPEED;
113 error = (*linesw[tp->t_line].l_open)(dev, tp);
118 vcons_close(struct dev_close_args *ap)
120 cdev_t dev = ap->a_head.a_dev;
126 if (tp->t_state & TS_ISOPEN) {
127 (*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
134 vcons_ioctl(struct dev_ioctl_args *ap)
136 cdev_t dev = ap->a_head.a_dev;
143 error = (*linesw[tp->t_line].l_ioctl)(tp, ap->a_cmd, ap->a_data,
144 ap->a_fflag, ap->a_cred);
145 if (error != ENOIOCTL)
147 error = ttioctl(tp, ap->a_cmd, ap->a_data, ap->a_fflag);
148 if (error != ENOIOCTL)
154 vcons_tty_param(struct tty *tp, struct termios *tio)
156 tp->t_ispeed = tio->c_ispeed;
157 tp->t_ospeed = tio->c_ospeed;
158 tp->t_cflag = tio->c_cflag;
163 vcons_tty_start(struct tty *tp)
168 if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) {
172 tp->t_state |= TS_BUSY;
173 while ((n = q_to_b(&tp->t_outq, buf, sizeof(buf))) > 0)
175 tp->t_state &= ~TS_BUSY;
179 /************************************************************************
180 * KERNEL CONSOLE INTERFACE *
181 ************************************************************************
183 * Kernel direct-call interface console driver
185 static cn_probe_t vconsprobe;
186 static cn_init_t vconsinit;
187 static cn_term_t vconsterm;
188 static cn_getc_t vconsgetc;
189 static cn_checkc_t vconscheckc;
190 static cn_putc_t vconsputc;
192 CONS_DRIVER(vcons, vconsprobe, vconsinit, vconsterm, vconsgetc,
193 vconscheckc, vconsputc, NULL);
196 vconsprobe(struct consdev *cp)
198 cp->cn_pri = CN_NORMAL;
199 cp->cn_dev = make_dev(&vcons_ops, 255,
200 UID_ROOT, GID_WHEEL, 0600, "vconsolectl");
204 vconsinit(struct consdev *cp)
209 vconsterm(struct consdev *vp)
214 vconsgetc(cdev_t dev)
220 if ((n = read(0, &c, 1)) == 1)
222 if (n < 0 && errno == EINTR)
224 panic("vconsgetc: EOF on console %d %d", n ,errno);
229 vconscheckc(cdev_t dev)
233 if (__pread(0, &c, 1, O_FNONBLOCKING, -1LL) == 1)
239 vconsputc(cdev_t dev, int c)