1 /* $NetBSD: sio.c,v 1.5 2019/06/30 05:04:49 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 1992 OMRON Corporation. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * OMRON Corporation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)sio.c 8.1 (Berkeley) 6/10/93 38 */ 39 /* 40 * Copyright (c) 1992, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * OMRON Corporation. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)sio.c 8.1 (Berkeley) 6/10/93 71 */ 72 73 /* sio.c NOV-25-1991 */ 74 75 #define NSIO 2 76 77 #include <sys/param.h> 78 #include <machine/board.h> 79 #include <luna68k/stand/boot/samachdep.h> 80 #include <luna68k/stand/boot/sioreg.h> 81 #include <luna68k/stand/boot/rcvbuf.h> 82 #include <luna68k/stand/boot/kbdreg.h> 83 84 static void siointr(int); 85 static int sioreg(int, int); 86 87 struct rcvbuf rcvbuf[NSIO]; 88 89 int sioconsole = -1; 90 struct siodevice *sio_addr[2]; 91 92 void 93 _siointr(void) 94 { 95 int unit; 96 97 for (unit = 0; unit < NSIO; unit++) 98 siointr(unit); 99 } 100 101 void 102 siointr(int unit) 103 { 104 #if 0 105 struct siodevice *sio = sio_addr[unit]; 106 #endif 107 int rr0 = sioreg(REG(unit, RR0), 0); 108 int rr1 = sioreg(REG(unit, RR1), 0); 109 110 if (rr0 & RR0_RXAVAIL) { 111 if (rr1 & RR1_FRAMING) 112 return; 113 114 if (rr1 & (RR1_PARITY | RR1_OVERRUN)) { 115 /* Channel-A Error Reset */ 116 sioreg(REG(unit, WR0), WR0_ERRRST); 117 } 118 119 if (unit == 1) { 120 int c = kbd_decode(sio_addr[unit]->sio_data); 121 122 if ((c & KC_TYPE) == KC_CODE) 123 PUSH_RBUF(unit, c); 124 } else { 125 PUSH_RBUF(unit, sio_addr[unit]->sio_data); 126 } 127 } 128 } 129 130 /* 131 * Following are all routines needed for SIO to act as console 132 */ 133 #include <dev/cons.h> 134 #include <luna68k/stand/boot/romvec.h> 135 136 void 137 siocnprobe(struct consdev *cp) 138 { 139 sio_addr[0] = (struct siodevice *)(OBIO_SIO + 0); 140 sio_addr[1] = (struct siodevice *)(OBIO_SIO + 4); 141 142 /* make sure hardware exists */ 143 if (badaddr((short *)sio_addr[0])) { 144 cp->cn_pri = CN_DEAD; 145 return; 146 } 147 148 /* locate the major number */ 149 150 /* initialize required fields */ 151 cp->cn_dev = 0; 152 cp->cn_pri = CN_NORMAL; 153 } 154 155 void 156 siocninit(struct consdev *cp) 157 { 158 int unit = cp->cn_dev; 159 160 sioinit(); 161 sioconsole = unit; 162 } 163 164 int 165 siocngetc(dev_t dev) 166 { 167 int c, unit = dev; 168 169 if (RBUF_EMPTY(unit)) 170 return 0; 171 172 POP_RBUF(unit, c); 173 174 return c; 175 } 176 177 void 178 siocnputc(dev_t dev, int c) 179 { 180 int unit = dev; 181 int s; 182 183 if (sioconsole == -1) { 184 (void)sioinit(); 185 sioconsole = unit; 186 } 187 188 s = splsio(); 189 190 /* wait for any pending transmission to finish */ 191 while ((sioreg(REG(unit, RR0), 0) & RR0_TXEMPTY) == 0) 192 continue; 193 194 sio_addr[unit]->sio_data = (c & 0xFF); 195 196 /* wait for any pending transmission to finish */ 197 while ((sioreg(REG(unit, RR0), 0) & RR0_TXEMPTY) == 0) 198 continue; 199 200 splx(s); 201 } 202 203 /* SIO misc routines */ 204 205 void 206 sioinit(void) 207 { 208 int s; 209 210 RBUF_INIT(0); 211 RBUF_INIT(1); 212 213 s = splsio(); 214 215 /* Channel-A Reset */ 216 sioreg(REG(0, WR0), WR0_CHANRST); 217 218 /* Set CPU BUS Interface Mode */ 219 sioreg(WR2A, WR2_VEC86 | WR2_INTR_1); 220 /* Set Interrupt Vector */ 221 sioreg(WR2B, 0); 222 223 /* Reset E/S Interrupt */ 224 sioreg(REG(0, WR0), WR0_RSTINT); 225 /* Tx/Rx */ 226 sioreg(REG(0, WR4), WR4_BAUD96 | WR4_STOP1 | WR4_NPARITY); 227 /* Rx */ 228 sioreg(REG(0, WR3), WR3_RX8BIT | WR3_RXENBL); 229 /* Tx */ 230 sioreg(REG(0, WR5), WR5_TX8BIT | WR5_TXENBL | WR5_DTR | WR5_RTS); 231 /* Reset E/S Interrupt */ 232 sioreg(REG(0, WR0), WR0_RSTINT); 233 /* Interrupted All Char. */ 234 sioreg(REG(0, WR1), WR1_RXALLS); 235 236 /* Channel-A Reset */ 237 sioreg(REG(1, WR0), WR0_CHANRST); 238 239 /* Reset E/S Interrupt */ 240 sioreg(REG(1, WR0), WR0_RSTINT); 241 /* Tx/Rx */ 242 sioreg(REG(1, WR4), WR4_BAUD96 | WR4_STOP1 | WR4_NPARITY); 243 /* Rx */ 244 sioreg(REG(1, WR3), WR3_RX8BIT | WR3_RXENBL); 245 /* Tx */ 246 sioreg(REG(1, WR5), WR5_TX8BIT | WR5_TXENBL); 247 /* Reset E/S Interrupt */ 248 sioreg(REG(1, WR0), WR0_RSTINT); 249 /* Interrupted All Char. */ 250 sioreg(REG(1, WR1), WR1_RXALLS); 251 252 splx(s); 253 } 254 255 int 256 sioreg(int reg, int val) 257 { 258 int chan; 259 260 chan = CHANNEL(reg); 261 262 if (isStatusReg(reg)) { 263 if (REGNO(reg) != 0) 264 sio_addr[chan]->sio_cmd = REGNO(reg); 265 return sio_addr[chan]->sio_stat; 266 } else { 267 if (REGNO(reg) != 0) 268 sio_addr[chan]->sio_cmd = REGNO(reg); 269 sio_addr[chan]->sio_cmd = val; 270 return val; 271 } 272 } 273
Indexes created Sat Sep 20 22:09:52 GMT 2025