rcons_kern.c revision 1.16.4.1
1 /* $NetBSD: rcons_kern.c,v 1.16.4.1 2007/09/03 14:38:26 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)rcons_kern.c 8.1 (Berkeley) 6/11/93 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: rcons_kern.c,v 1.16.4.1 2007/09/03 14:38:26 yamt Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/device.h> 48 #include <sys/kernel.h> 49 #include <sys/systm.h> 50 #include <sys/ioctl.h> 51 #include <sys/tty.h> 52 #include <sys/proc.h> 53 54 #include <dev/rcons/raster.h> 55 #include <dev/rcons/rcons.h> 56 57 static void rcons_belltmr(void *); 58 59 static struct rconsole *mydevicep; /* XXX */ 60 static void rcons_output(struct tty *); 61 62 void 63 rcons_cnputc(c) 64 int c; 65 { 66 char buf[1]; 67 long attr; 68 69 /* Swap in kernel attribute */ 70 attr = mydevicep->rc_attr; 71 mydevicep->rc_attr = mydevicep->rc_kern_attr; 72 73 if (c == '\n') 74 rcons_puts(mydevicep, "\r\n", 2); 75 else { 76 buf[0] = c; 77 rcons_puts(mydevicep, buf, 1); 78 } 79 80 /* Swap out kernel attribute */ 81 mydevicep->rc_attr = attr; 82 } 83 84 static void 85 rcons_output(tp) 86 struct tty *tp; 87 { 88 int s, n; 89 char buf[OBUFSIZ]; 90 91 s = spltty(); 92 if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) { 93 splx(s); 94 return; 95 } 96 tp->t_state |= TS_BUSY; 97 splx(s); 98 n = q_to_b(&tp->t_outq, buf, sizeof(buf)); 99 rcons_puts(mydevicep, buf, n); 100 101 s = spltty(); 102 tp->t_state &= ~TS_BUSY; 103 /* Come back if there's more to do */ 104 if (tp->t_outq.c_cc) { 105 tp->t_state |= TS_TIMEOUT; 106 callout_reset(&tp->t_rstrt_ch, 1, ttrstrt, tp); 107 } 108 if (tp->t_outq.c_cc <= tp->t_lowat) { 109 if (tp->t_state&TS_ASLEEP) { 110 tp->t_state &= ~TS_ASLEEP; 111 wakeup((void *)&tp->t_outq); 112 } 113 selwakeup(&tp->t_wsel); 114 } 115 splx(s); 116 } 117 118 /* Ring the console bell */ 119 void 120 rcons_bell(rc) 121 struct rconsole *rc; 122 { 123 int i, s; 124 125 if (rc->rc_bits & FB_VISBELL) { 126 /* invert the screen twice */ 127 i = ((rc->rc_bits & FB_INVERT) == 0); 128 rcons_invert(rc, i); 129 rcons_invert(rc, i ^ 1); 130 } 131 132 s = splhigh(); 133 if (rc->rc_belldepth++) { 134 if (rc->rc_belldepth > 3) 135 rc->rc_belldepth = 3; 136 splx(s); 137 } else { 138 rc->rc_ringing = 1; 139 splx(s); 140 (*rc->rc_bell)(1); 141 /* XXX Chris doesn't like the following divide */ 142 callout_reset(&rc->rc_belltmr_ch, hz / 10, 143 rcons_belltmr, rc); 144 } 145 } 146 147 /* Bell timer service routine */ 148 static void 149 rcons_belltmr(p) 150 void *p; 151 { 152 struct rconsole *rc = p; 153 int s = splhigh(), i; 154 155 if (rc->rc_ringing) { 156 rc->rc_ringing = 0; 157 i = --rc->rc_belldepth; 158 splx(s); 159 (*rc->rc_bell)(0); 160 if (i != 0) 161 /* XXX Chris doesn't like the following divide */ 162 callout_reset(&rc->rc_belltmr_ch, hz / 30, 163 rcons_belltmr, rc); 164 } else { 165 rc->rc_ringing = 1; 166 splx(s); 167 (*rc->rc_bell)(1); 168 callout_reset(&rc->rc_belltmr_ch, hz / 10, 169 rcons_belltmr, rc); 170 } 171 } 172 173 void 174 rcons_init(rc, clear) 175 struct rconsole *rc; 176 int clear; 177 { 178 mydevicep = rc; 179 180 callout_init(&rc->rc_belltmr_ch, 0); 181 182 /* Initialize operations set, clear screen and turn cursor on */ 183 rcons_init_ops(rc); 184 if (clear) { 185 rc->rc_col = 0; 186 rc->rc_row = 0; 187 rcons_clear2eop(rc); 188 } 189 rcons_cursor(rc); 190 } 191 192 void 193 rcons_ttyinit(tp) 194 struct tty *tp; 195 { 196 /* XXX this should go away */ 197 struct rconsole *rc = mydevicep; 198 struct winsize *ws; 199 200 if (rc == NULL) 201 return; 202 203 /* Let the system know how big the console is */ 204 ws = &tp->t_winsize; 205 ws->ws_row = rc->rc_maxrow; 206 ws->ws_col = rc->rc_maxcol; 207 ws->ws_xpixel = rc->rc_width; 208 ws->ws_ypixel = rc->rc_height; 209 210 /* Initialization done; hook us up */ 211 tp->t_oproc = rcons_output; 212 /*tp->t_stop = (void (*)()) nullop;*/ 213 } 214
Indexes created Wed Oct 15 16:09:53 GMT 2025