1 /* $NetBSD: hpib.c,v 1.2 1997/05/12 07:48:23 thorpej 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)hpib.c 8.1 (Berkeley) 6/10/93 36 */ 37 38 /* 39 * HPIB driver 40 */ 41 #include <sys/param.h> 42 #include <sys/reboot.h> 43 44 #include <lib/libsa/stand.h> 45 46 #include <hp300/stand/common/device.h> 47 #include <hp300/stand/common/hpibvar.h> 48 #include <hp300/stand/common/samachdep.h> 49 50 #include <hp300/dev/dioreg.h> 51 52 int internalhpib = IIOV(DIO_IHPIBADDR); 53 int fhpibppoll(), nhpibppoll(); 54 55 struct hpib_softc hpib_softc[NHPIB]; 56 57 hpibinit() 58 { 59 extern struct hp_hw sc_table[]; 60 register struct hp_hw *hw; 61 register struct hpib_softc *hs; 62 register int i, addr; 63 64 i = 0; 65 for (hw = sc_table; i < NHPIB && hw < &sc_table[MAXCTLRS]; hw++) { 66 if (!HW_ISHPIB(hw)) 67 continue; 68 hs = &hpib_softc[i]; 69 hs->sc_addr = hw->hw_kva; 70 if (nhpibinit(i) == 0) 71 if (fhpibinit(i) == 0) 72 continue; 73 if (howto & RB_ASKNAME) 74 printf("hpib%d at sc%d\n", i, hw->hw_sc); 75 hw->hw_pa = (caddr_t) i; /* XXX for autoconfig */ 76 hs->sc_alive = 1; 77 i++; 78 } 79 } 80 81 hpibalive(unit) 82 register int unit; 83 { 84 if (unit >= NHPIB || hpib_softc[unit].sc_alive == 0) 85 return (0); 86 return (1); 87 } 88 89 hpibid(unit, slave) 90 int unit, slave; 91 { 92 short id; 93 int rv; 94 95 if (hpib_softc[unit].sc_type == HPIBC) 96 rv = fhpibrecv(unit, 31, slave, &id, 2); 97 else 98 rv = nhpibrecv(unit, 31, slave, &id, 2); 99 if (rv != 2) 100 return (0); 101 return (id); 102 } 103 104 hpibsend(unit, slave, sec, buf, cnt) 105 int unit, slave; 106 char *buf; 107 int cnt; 108 { 109 if (hpib_softc[unit].sc_type == HPIBC) 110 return (fhpibsend(unit, slave, sec, buf, cnt)); 111 return (nhpibsend(unit, slave, sec, buf, cnt)); 112 } 113 114 hpibrecv(unit, slave, sec, buf, cnt) 115 int unit, slave; 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 hpibswait(unit, slave) 125 register int unit, slave; 126 { 127 register int timo = 1000000; 128 register int (*poll)(); 129 130 slave = 0x80 >> slave; 131 if (hpib_softc[unit].sc_type == HPIBC) 132 poll = fhpibppoll; 133 else 134 poll = nhpibppoll; 135 while (((*poll)(unit) & slave) == 0) 136 if (--timo == 0) 137 break; 138 if (timo == 0) 139 return (-1); 140 return (0); 141 } 142 143 hpibgo(unit, slave, sec, addr, count, flag) 144 int unit, slave; 145 char *addr; 146 { 147 if (hpib_softc[unit].sc_type == HPIBC) 148 if (flag == F_READ) 149 fhpibrecv(unit, slave, sec, addr, count); 150 else 151 fhpibsend(unit, slave, sec, addr, count); 152 else 153 if (flag == F_READ) 154 nhpibrecv(unit, slave, sec, addr, count); 155 else 156 nhpibsend(unit, slave, sec, addr, count); 157 } 158