apci.c revision 1.6
1 /* $NetBSD: apci.c,v 1.6 2003/11/14 16:52:40 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 * 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 NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1990, 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 * the Systems Programming Group of the University of Utah Computer 45 * Science Department. 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 * @(#)dca.c 8.1 (Berkeley) 6/10/93 72 */ 73 /* 74 * Copyright (c) 1988 University of Utah. 75 * 76 * This code is derived from software contributed to Berkeley by 77 * the Systems Programming Group of the University of Utah Computer 78 * Science Department. 79 * 80 * Redistribution and use in source and binary forms, with or without 81 * modification, are permitted provided that the following conditions 82 * are met: 83 * 1. Redistributions of source code must retain the above copyright 84 * notice, this list of conditions and the following disclaimer. 85 * 2. Redistributions in binary form must reproduce the above copyright 86 * notice, this list of conditions and the following disclaimer in the 87 * documentation and/or other materials provided with the distribution. 88 * 3. All advertising materials mentioning features or use of this software 89 * must display the following acknowledgement: 90 * This product includes software developed by the University of 91 * California, Berkeley and its contributors. 92 * 4. Neither the name of the University nor the names of its contributors 93 * may be used to endorse or promote products derived from this software 94 * without specific prior written permission. 95 * 96 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 97 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 98 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 99 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 100 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 101 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 102 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 103 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 104 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 105 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 106 * SUCH DAMAGE. 107 * 108 * @(#)dca.c 8.1 (Berkeley) 6/10/93 109 */ 110 111 #ifdef APCICONSOLE 112 #include <sys/param.h> 113 #include <dev/cons.h> 114 115 #include <lib/libsa/stand.h> 116 117 #include <hp300/dev/frodoreg.h> /* for APCI offsets */ 118 119 #include <hp300/stand/common/apcireg.h> /* for register map */ 120 #include <hp300/stand/common/dcareg.h> /* for register bits */ 121 #include <hp300/stand/common/consdefs.h> 122 #include <hp300/stand/common/samachdep.h> 123 124 struct apciregs *apcicnaddr = 0; 125 126 void 127 apciprobe(cp) 128 struct consdev *cp; 129 { 130 131 apcicnaddr = (void *)IIOV(FRODO_BASE + FRODO_APCI_OFFSET(1)); 132 133 cp->cn_pri = CN_DEAD; 134 135 /* 136 * Only a 425e can have an APCI console. On all other 4xx models, 137 * the "first" serial port is mapped to the DCA at select code 9. 138 */ 139 if (machineid != HP_425 || mmuid != MMUID_425_E) 140 return; 141 142 #ifdef FORCEAPCICONSOLE 143 cp->cn_pri = CN_REMOTE; 144 #else 145 cp->cn_pri = CN_NORMAL; 146 #endif 147 curcons_scode = -2; 148 } 149 150 void 151 apciinit(cp) 152 struct consdev *cp; 153 { 154 struct apciregs *apci = (struct apciregs *)apcicnaddr; 155 156 /* 157 * The only system on which this will happen is a 425e, 158 * which does not currently have a framebuffer console 159 * driver. We use the ROM's output method to let the 160 * operator know we're switching to the APCI. 161 */ 162 userom = 1; 163 printf("Switching to APCI console.\n"); 164 userom = 0; 165 166 apci->ap_cfcr = CFCR_DLAB; 167 apci->ap_data = APCIBRD(9600) & 0xff; 168 apci->ap_ier = (APCIBRD(9600) >> 8) & 0xff; 169 apci->ap_cfcr = CFCR_8BITS; 170 apci->ap_fifo = 171 FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_1; 172 apci->ap_mcr = MCR_DTR | MCR_RTS; 173 } 174 175 /* ARGSUSED */ 176 #ifndef SMALL 177 int 178 apcigetchar(dev) 179 dev_t dev; 180 { 181 struct apciregs *apci = apcicnaddr; 182 short stat; 183 int c; 184 185 if (((stat = apci->ap_lsr) & LSR_RXRDY) == 0) 186 return 0; 187 c = apci->ap_data; 188 return c; 189 } 190 #else 191 int 192 apcigetchar(dev) 193 dev_t dev; 194 { 195 196 return 0; 197 } 198 #endif 199 200 /* ARGSUSED */ 201 void 202 apciputchar(dev, c) 203 dev_t dev; 204 int c; 205 { 206 struct apciregs *apci = apcicnaddr; 207 int timo; 208 short stat; 209 210 /* wait a reasonable time for the transmitter to come ready */ 211 timo = 50000; 212 while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo) 213 ; 214 apci->ap_data = c; 215 /* wait for this transmission to complete */ 216 timo = 1000000; 217 while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo) 218 ; 219 } 220 #endif 221
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