1 /* $NetBSD: hpib.c,v 1.6 2005/12/11 12:17:19 christos 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(void) 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(int unit) 79 { 80 if (unit >= NHPIB || hpib_softc[unit].sc_alive == 0) 81 return 0; 82 return 1; 83 } 84 85 int 86 hpibid(int unit, int slave) 87 { 88 short id; 89 int rv; 90 91 if (hpib_softc[unit].sc_type == HPIBC) 92 rv = fhpibrecv(unit, 31, slave, (char *)&id, 2); 93 else 94 rv = nhpibrecv(unit, 31, slave, (char *)&id, 2); 95 if (rv != 2) 96 return 0; 97 return id; 98 } 99 100 int 101 hpibsend(int unit, int slave, int sec, char *buf, int cnt) 102 { 103 104 if (hpib_softc[unit].sc_type == HPIBC) 105 return (fhpibsend(unit, slave, sec, buf, cnt)); 106 return nhpibsend(unit, slave, sec, buf, cnt); 107 } 108 109 int 110 hpibrecv(int unit, int slave, int sec, char *buf, int cnt) 111 { 112 113 if (hpib_softc[unit].sc_type == HPIBC) 114 return (fhpibrecv(unit, slave, sec, buf, cnt)); 115 return nhpibrecv(unit, slave, sec, buf, cnt); 116 } 117 118 int 119 hpibswait(int unit, int slave) 120 { 121 int timo = 1000000; 122 int (*poll)(int); 123 124 slave = 0x80 >> slave; 125 if (hpib_softc[unit].sc_type == HPIBC) 126 poll = fhpibppoll; 127 else 128 poll = nhpibppoll; 129 while (((*poll)(unit) & slave) == 0) 130 if (--timo == 0) 131 break; 132 if (timo == 0) 133 return -1; 134 return 0; 135 } 136 137 void 138 hpibgo(int unit, int slave, int sec, char *addr, int count, int flag) 139 { 140 141 if (hpib_softc[unit].sc_type == HPIBC) 142 if (flag == F_READ) 143 fhpibrecv(unit, slave, sec, addr, count); 144 else 145 fhpibsend(unit, slave, sec, addr, count); 146 else 147 if (flag == F_READ) 148 nhpibrecv(unit, slave, sec, addr, count); 149 else 150 nhpibsend(unit, slave, sec, addr, count); 151 } 152