apci.c revision 1.10.30.1
1 /* $NetBSD: apci.c,v 1.10.30.1 2011/02/17 11:59:40 bouyer 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 88 apcicnaddr = (void *)IIOV(FRODO_BASE + FRODO_APCI_OFFSET(1)); 89 90 cp->cn_pri = CN_DEAD; 91 92 /* 93 * Only a 425e can have an APCI console. On all other 4xx models, 94 * the "first" serial port is mapped to the DCA at select code 9. 95 */ 96 if (machineid != HP_425 || mmuid != MMUID_425_E) 97 return; 98 99 #ifdef FORCEAPCICONSOLE 100 cp->cn_pri = CN_REMOTE; 101 #else 102 cp->cn_pri = CN_NORMAL; 103 #endif 104 curcons_scode = -2; 105 } 106 107 void 108 apciinit(struct consdev *cp) 109 { 110 struct apciregs *apci = (struct apciregs *)apcicnaddr; 111 112 /* 113 * The only system on which this will happen is a 425e, 114 * which does not currently have a framebuffer console 115 * driver. We use the ROM's output method to let the 116 * operator know we're switching to the APCI. 117 */ 118 userom = 1; 119 printf("Switching to APCI console.\n"); 120 userom = 0; 121 122 apci->ap_cfcr = CFCR_DLAB; 123 apci->ap_data = APCIBRD(9600) & 0xff; 124 apci->ap_ier = (APCIBRD(9600) >> 8) & 0xff; 125 apci->ap_cfcr = CFCR_8BITS; 126 apci->ap_fifo = 127 FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_1; 128 apci->ap_mcr = MCR_DTR | MCR_RTS; 129 } 130 131 /* ARGSUSED */ 132 #ifndef SMALL 133 int 134 apcigetchar(dev_t dev) 135 { 136 struct apciregs *apci = apcicnaddr; 137 short stat; 138 int c; 139 140 if (((stat = apci->ap_lsr) & LSR_RXRDY) == 0) 141 return 0; 142 c = apci->ap_data; 143 return c; 144 } 145 #else 146 int 147 apcigetchar(dev_t dev) 148 { 149 150 return 0; 151 } 152 #endif 153 154 /* ARGSUSED */ 155 void 156 apciputchar(dev_t dev, int c) 157 { 158 struct apciregs *apci = apcicnaddr; 159 int timo; 160 short stat; 161 162 /* wait a reasonable time for the transmitter to come ready */ 163 timo = 50000; 164 while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo) 165 ; 166 apci->ap_data = c; 167 /* wait for this transmission to complete */ 168 timo = 1000000; 169 while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo) 170 ; 171 } 172 #endif 173
Indexes created Thu Oct 16 14:10:15 GMT 2025