1/* $OpenBSD: sio.c,v 1.4 2023/01/10 17:10:57 miod Exp $ */ 2/* $NetBSD: sio.c,v 1.3 2013/01/21 11:58:12 tsutsui Exp $ */ 3 4/* 5 * Copyright (c) 1992 OMRON Corporation. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * OMRON Corporation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)sio.c 8.1 (Berkeley) 6/10/93 39 */ 40/* 41 * Copyright (c) 1992, 1993 42 * The Regents of the University of California. All rights reserved. 43 * 44 * This code is derived from software contributed to Berkeley by 45 * OMRON Corporation. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)sio.c 8.1 (Berkeley) 6/10/93 72 */ 73 74/* sio.c NOV-25-1991 */ 75 76#define NSIO 2 77 78#include <sys/param.h> 79#include <machine/board.h> 80#include <luna88k/stand/boot/samachdep.h> 81#include <luna88k/stand/boot/sioreg.h> 82#include <luna88k/stand/boot/rcvbuf.h> 83#include <luna88k/stand/boot/kbdreg.h> 84 85static int sioreg(int, int); 86 87struct rcvbuf rcvbuf[NSIO]; 88 89int sioconsole = -1; 90struct siodevice *sio_addr[2]; 91 92int 93siointr(int unit) 94{ 95/* struct siodevice *sio = sio_addr[unit]; */ 96 int rr0 = sioreg(REG(unit, RR0), 0); 97 int rr1 = sioreg(REG(unit, RR1), 0); 98 99 if (rr0 & RR0_RXAVAIL) { 100 if (rr1 & RR1_FRAMING) 101 return 1; 102 103 if (rr1 & (RR1_PARITY | RR1_OVERRUN)) 104 sioreg(REG(unit, WR0), WR0_ERRRST); /* Channel-A Error Reset */ 105 106 if (unit == 1) { 107 int c = kbd_decode(sio_addr[unit]->sio_data); 108 109 if ((c & KC_TYPE) == KC_CODE) 110 PUSH_RBUF(unit, c); 111 } else { 112 PUSH_RBUF(unit, sio_addr[unit]->sio_data); 113 } 114 return 1; 115 } 116 117 return 0; 118} 119 120/* 121 * Following are all routines needed for SIO to act as console 122 */ 123#include <dev/cons.h> 124 125void 126siocnprobe(struct consdev *cp) 127{ 128 sio_addr[0] = (struct siodevice *)OBIO_SIO; 129 sio_addr[1] = (struct siodevice *)OBIO_SIO + 1; 130 131 /* make sure hardware exists */ 132 if (badaddr(sio_addr[0], 4) != 0) { 133 cp->cn_pri = CN_DEAD; 134 return; 135 } 136 137 /* locate the major number */ 138 139 /* initialize required fields */ 140 cp->cn_dev = 0; 141 cp->cn_pri = CN_LOWPRI; 142} 143 144void 145siocninit(struct consdev *cp) 146{ 147 int unit = cp->cn_dev; 148 149 sioinit(); 150 sioconsole = unit; 151} 152 153int 154siocngetc(dev_t dev) 155{ 156 int c, unit = dev & ~0x80, poll = (dev & 0x80) != 0; 157 158 siointr(unit); 159 160 if (poll) { 161 if (RBUF_EMPTY(unit)) 162 return 0; 163 PEEK_RBUF(unit, c); 164 return c; 165 166 } 167 168 while (RBUF_EMPTY(unit)) { 169 DELAY(1); 170 siointr(unit); 171 } 172 173 POP_RBUF(unit, c); 174 return c; 175} 176 177void 178siocnputc(dev_t dev, int c) 179{ 180 int unit = dev; 181 182 if (sioconsole == -1) { 183 (void) sioinit(); 184 sioconsole = unit; 185 } 186 187 /* wait for any pending transmission to finish */ 188 while ((sioreg(REG(unit, RR0), 0) & RR0_TXEMPTY) == 0); 189 190 sio_addr[unit]->sio_data = (c & 0xFF); 191 192 /* wait for any pending transmission to finish */ 193 while ((sioreg(REG(unit, RR0), 0) & RR0_TXEMPTY) == 0); 194} 195 196/* SIO misc routines */ 197 198void 199sioinit(void) 200{ 201 RBUF_INIT(0); 202 RBUF_INIT(1); 203 204 sioreg(REG(0, WR0), WR0_CHANRST); /* Channel-A Reset */ 205 206 sioreg(WR2A, WR2_VEC86 | WR2_INTR_1); /* Set CPU BUS Interface Mode */ 207 sioreg(WR2B, 0); /* Set Interrupt Vector */ 208 209 sioreg(REG(0, WR0), WR0_RSTINT); /* Reset E/S Interrupt */ 210 sioreg(REG(0, WR4), WR4_BAUD96 | WR4_STOP1 | WR4_NPARITY); /* Tx/Rx */ 211 sioreg(REG(0, WR3), WR3_RX8BIT | WR3_RXENBL); /* Rx */ 212 sioreg(REG(0, WR5), WR5_TX8BIT | WR5_TXENBL | WR5_DTR | WR5_RTS); /* Tx */ 213 sioreg(REG(0, WR0), WR0_RSTINT); /* Reset E/S Interrupt */ 214 sioreg(REG(0, WR1), WR1_RXALLS); /* Interrupted All Char. */ 215 216 sioreg(REG(1, WR0), WR0_CHANRST); /* Channel-A Reset */ 217 218 sioreg(REG(1, WR0), WR0_RSTINT); /* Reset E/S Interrupt */ 219 sioreg(REG(1, WR4), WR4_BAUD96 | WR4_STOP1 | WR4_NPARITY); /* Tx/Rx */ 220 sioreg(REG(1, WR3), WR3_RX8BIT | WR3_RXENBL); /* Rx */ 221 sioreg(REG(1, WR5), WR5_TX8BIT | WR5_TXENBL); /* Tx */ 222 sioreg(REG(1, WR0), WR0_RSTINT); /* Reset E/S Interrupt */ 223 sioreg(REG(1, WR1), WR1_RXALLS); /* Interrupted All Char. */ 224} 225 226int 227sioreg(int reg, int val) 228{ 229 int chan; 230 231 chan = CHANNEL(reg); 232 233 if (isStatusReg(reg)) { 234 if (REGNO(reg) != 0) 235 sio_addr[chan]->sio_cmd = REGNO(reg); 236 return(sio_addr[chan]->sio_stat); 237 } else { 238 if (REGNO(reg) != 0) 239 sio_addr[chan]->sio_cmd = REGNO(reg); 240 sio_addr[chan]->sio_cmd = val; 241 return(val); 242 } 243} 244