rcons_kern.c revision 1.19.8.2
1 /* $NetBSD: rcons_kern.c,v 1.19.8.2 2008/01/09 01:54:26 matt 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 1.19.8.2 2008/01/09 01:54:26 matt 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 (ttypull(tp)) { 105 tp->t_state |= TS_TIMEOUT; 106 callout_schedule(&tp->t_rstrt_ch, 1); 107 } 108 splx(s); 109 } 110 111 /* Ring the console bell */ 112 void 113 rcons_bell(rc) 114 struct rconsole *rc; 115 { 116 int i, s; 117 118 if (rc->rc_bits & FB_VISBELL) { 119 /* invert the screen twice */ 120 i = ((rc->rc_bits & FB_INVERT) == 0); 121 rcons_invert(rc, i); 122 rcons_invert(rc, i ^ 1); 123 } 124 125 s = splhigh(); 126 if (rc->rc_belldepth++) { 127 if (rc->rc_belldepth > 3) 128 rc->rc_belldepth = 3; 129 splx(s); 130 } else { 131 rc->rc_ringing = 1; 132 splx(s); 133 (*rc->rc_bell)(1); 134 /* XXX Chris doesn't like the following divide */ 135 callout_reset(&rc->rc_belltmr_ch, hz / 10, 136 rcons_belltmr, rc); 137 } 138 } 139 140 /* Bell timer service routine */ 141 static void 142 rcons_belltmr(p) 143 void *p; 144 { 145 struct rconsole *rc = p; 146 int s = splhigh(), i; 147 148 if (rc->rc_ringing) { 149 rc->rc_ringing = 0; 150 i = --rc->rc_belldepth; 151 splx(s); 152 (*rc->rc_bell)(0); 153 if (i != 0) 154 /* XXX Chris doesn't like the following divide */ 155 callout_reset(&rc->rc_belltmr_ch, hz / 30, 156 rcons_belltmr, rc); 157 } else { 158 rc->rc_ringing = 1; 159 splx(s); 160 (*rc->rc_bell)(1); 161 callout_reset(&rc->rc_belltmr_ch, hz / 10, 162 rcons_belltmr, rc); 163 } 164 } 165 166 void 167 rcons_init(rc, clear) 168 struct rconsole *rc; 169 int clear; 170 { 171 mydevicep = rc; 172 173 callout_init(&rc->rc_belltmr_ch, 0); 174 175 /* Initialize operations set, clear screen and turn cursor on */ 176 rcons_init_ops(rc); 177 if (clear) { 178 rc->rc_col = 0; 179 rc->rc_row = 0; 180 rcons_clear2eop(rc); 181 } 182 rcons_cursor(rc); 183 } 184 185 void 186 rcons_ttyinit(tp) 187 struct tty *tp; 188 { 189 /* XXX this should go away */ 190 struct rconsole *rc = mydevicep; 191 struct winsize *ws; 192 193 if (rc == NULL) 194 return; 195 196 /* Let the system know how big the console is */ 197 ws = &tp->t_winsize; 198 ws->ws_row = rc->rc_maxrow; 199 ws->ws_col = rc->rc_maxcol; 200 ws->ws_xpixel = rc->rc_width; 201 ws->ws_ypixel = rc->rc_height; 202 203 /* Initialization done; hook us up */ 204 tp->t_oproc = rcons_output; 205 /*tp->t_stop = (void (*)()) nullop;*/ 206 } 207
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