1 /* $NetBSD: apci.c,v 1.14 2023/04/21 22:44:27 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1988 University of Utah. 34 * Copyright (c) 1990, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * This code is derived from software contributed to Berkeley by 38 * the Systems Programming Group of the University of Utah Computer 39 * Science Department. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)dca.c 8.1 (Berkeley) 6/10/93 66 */ 67 68 #ifdef APCICONSOLE 69 #include <sys/param.h> 70 #include <dev/cons.h> 71 72 #include <lib/libsa/stand.h> 73 74 #include <hp300/dev/frodoreg.h> /* for APCI offsets */ 75 #include <hp300/dev/intioreg.h> /* for frodo offsets */ 76 77 #include <hp300/stand/common/apcireg.h> /* for register map */ 78 #include <hp300/stand/common/dcareg.h> /* for register bits */ 79 #include <hp300/stand/common/consdefs.h> 80 #include <hp300/stand/common/samachdep.h> 81 82 struct apciregs *apcicnaddr = 0; 83 84 void 85 apciprobe(struct consdev *cp) 86 { 87 volatile uint8_t *frodoregs; 88 89 cp->cn_pri = CN_DEAD; 90 91 /* 92 * Only a 425e can have an APCI console. On all other 4xx models, 93 * the "first" serial port is mapped to the DCA at select code 9. 94 */ 95 if (machineid != HP_425 || mmuid != MMUID_425_E) 96 return; 97 98 /* 99 * Check the service switch. On the 425e, this is a physical 100 * switch, unlike other frodo-based machines, so we can use it 101 * as a serial vs internal video selector, since the PROM can not 102 * be configured for serial console. 103 */ 104 frodoregs = (volatile u_int8_t *)IIOV(INTIOBASE + FRODO_BASE); 105 if (badaddr((char *)frodoregs) == 0 && 106 (frodoregs[FRODO_IISR] & FRODO_IISR_SERVICE) == 0) 107 cp->cn_pri = CN_REMOTE; 108 else 109 cp->cn_pri = CN_NORMAL; 110 111 #ifdef FORCEAPCICONSOLE 112 cp->cn_pri = CN_REMOTE; 113 #endif 114 curcons_scode = -2; 115 116 apcicnaddr = 117 (void *)IIOV(INTIOBASE + FRODO_BASE + FRODO_APCI_OFFSET(1)); 118 } 119 120 void 121 apciinit(struct consdev *cp) 122 { 123 struct apciregs *apci = (struct apciregs *)apcicnaddr; 124 125 /* 126 * The only system on which this will happen is a 425e, 127 * which does not currently have a framebuffer console 128 * driver. We use the ROM's output method to let the 129 * operator know we're switching to the APCI. 130 */ 131 userom = 1; 132 printf("Switching to APCI console.\n"); 133 userom = 0; 134 135 apci->ap_cfcr = CFCR_DLAB; 136 apci->ap_data = APCIBRD(9600) & 0xff; 137 apci->ap_ier = (APCIBRD(9600) >> 8) & 0xff; 138 apci->ap_cfcr = CFCR_8BITS; 139 apci->ap_fifo = 140 FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_1; 141 apci->ap_mcr = MCR_DTR | MCR_RTS; 142 } 143 144 #ifndef SMALL 145 int 146 apcigetchar(dev_t dev) 147 { 148 struct apciregs *apci = apcicnaddr; 149 short stat; 150 int c; 151 152 if (((stat = apci->ap_lsr) & LSR_RXRDY) == 0) 153 return 0; 154 c = apci->ap_data; 155 return c; 156 } 157 #else 158 int 159 apcigetchar(dev_t dev) 160 { 161 162 return 0; 163 } 164 #endif 165 166 void 167 apciputchar(dev_t dev, int c) 168 { 169 struct apciregs *apci = apcicnaddr; 170 int timo; 171 short stat; 172 173 /* wait a reasonable time for the transmitter to come ready */ 174 timo = 50000; 175 while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo) 176 ; 177 apci->ap_data = c; 178 /* wait for this transmission to complete */ 179 timo = 1000000; 180 while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo) 181 ; 182 } 183 #endif 184
Indexes created Sat Sep 20 22:09:52 GMT 2025