1 /* $NetBSD: hpib.c,v 1.4 2003/11/14 16:52:40 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)hpib.c 8.1 (Berkeley) 6/10/93 32 */ 33 34 /* 35 * HPIB driver 36 */ 37 #include <sys/param.h> 38 #include <sys/reboot.h> 39 40 #include <lib/libsa/stand.h> 41 42 #include <hp300/stand/common/device.h> 43 #include <hp300/stand/common/hpibvar.h> 44 #include <hp300/stand/common/samachdep.h> 45 46 #include <hp300/dev/dioreg.h> 47 48 int internalhpib = IIOV(DIO_IHPIBADDR); 49 50 struct hpib_softc hpib_softc[NHPIB]; 51 52 void 53 hpibinit() 54 { 55 extern struct hp_hw sc_table[]; 56 struct hp_hw *hw; 57 struct hpib_softc *hs; 58 int i; 59 60 i = 0; 61 for (hw = sc_table; i < NHPIB && hw < &sc_table[MAXCTLRS]; hw++) { 62 if (!HW_ISHPIB(hw)) 63 continue; 64 hs = &hpib_softc[i]; 65 hs->sc_addr = hw->hw_kva; 66 if (nhpibinit(i) == 0) 67 if (fhpibinit(i) == 0) 68 continue; 69 if (howto & RB_ASKNAME) 70 printf("hpib%d at sc%d\n", i, hw->hw_sc); 71 hw->hw_pa = (caddr_t) i; /* XXX for autoconfig */ 72 hs->sc_alive = 1; 73 i++; 74 } 75 } 76 77 int 78 hpibalive(unit) 79 int unit; 80 { 81 if (unit >= NHPIB || hpib_softc[unit].sc_alive == 0) 82 return 0; 83 return 1; 84 } 85 86 int 87 hpibid(unit, slave) 88 int unit, slave; 89 { 90 short id; 91 int rv; 92 93 if (hpib_softc[unit].sc_type == HPIBC) 94 rv = fhpibrecv(unit, 31, slave, (char *)&id, 2); 95 else 96 rv = nhpibrecv(unit, 31, slave, (char *)&id, 2); 97 if (rv != 2) 98 return 0; 99 return id; 100 } 101 102 int 103 hpibsend(unit, slave, sec, buf, cnt) 104 int unit, slave, sec; 105 char *buf; 106 int cnt; 107 { 108 if (hpib_softc[unit].sc_type == HPIBC) 109 return (fhpibsend(unit, slave, sec, buf, cnt)); 110 return nhpibsend(unit, slave, sec, buf, cnt); 111 } 112 113 int 114 hpibrecv(unit, slave, sec, buf, cnt) 115 int unit, slave, sec; 116 char *buf; 117 int cnt; 118 { 119 if (hpib_softc[unit].sc_type == HPIBC) 120 return (fhpibrecv(unit, slave, sec, buf, cnt)); 121 return nhpibrecv(unit, slave, sec, buf, cnt); 122 } 123 124 int 125 hpibswait(unit, slave) 126 int unit, slave; 127 { 128 int timo = 1000000; 129 int (*poll)(int); 130 131 slave = 0x80 >> slave; 132 if (hpib_softc[unit].sc_type == HPIBC) 133 poll = fhpibppoll; 134 else 135 poll = nhpibppoll; 136 while (((*poll)(unit) & slave) == 0) 137 if (--timo == 0) 138 break; 139 if (timo == 0) 140 return -1; 141 return 0; 142 } 143 144 void 145 hpibgo(unit, slave, sec, addr, count, flag) 146 int unit, slave, sec; 147 char *addr; 148 int count, flag; 149 { 150 151 if (hpib_softc[unit].sc_type == HPIBC) 152 if (flag == F_READ) 153 fhpibrecv(unit, slave, sec, addr, count); 154 else 155 fhpibsend(unit, slave, sec, addr, count); 156 else 157 if (flag == F_READ) 158 nhpibrecv(unit, slave, sec, addr, count); 159 else 160 nhpibsend(unit, slave, sec, addr, count); 161 } 162