| 1 | /* |
| 2 | * Copyright (c) 1982, 1990 The Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. All advertising materials mentioning features or use of this software |
| 14 | * must display the following acknowledgement: |
| 15 | * This product includes software developed by the University of |
| 16 | * California, Berkeley and its contributors. |
| 17 | * 4. Neither the name of the University nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | * |
| 33 | * @(#)hpib.c 7.5 (Berkeley) 5/7/91 |
| 34 | */ |
| 35 | |
| 36 | /* |
| 37 | * HPIB driver |
| 38 | */ |
| 39 | #include <sys/param.h> |
| 40 | #include <sys/reboot.h> |
| 41 | #include "../dev/device.h" |
| 42 | #include "hpibvar.h" |
| 43 | |
| 44 | #include "saio.h" |
| 45 | #include "samachdep.h" |
| 46 | |
| 47 | int internalhpib = IIOV(0x478000); |
| 48 | int fhpibppoll(), nhpibppoll(); |
| 49 | |
| 50 | struct hpib_softc hpib_softc[NHPIB]; |
| 51 | |
| 52 | #define hpibunit(x) ((x) >> 3) |
| 53 | #define hpibslave(x) ((x) & 7) |
| 54 | |
| 55 | hpibinit() |
| 56 | { |
| 57 | extern struct hp_hw sc_table[]; |
| 58 | register struct hp_hw *hw; |
| 59 | register struct hpib_softc *hs; |
| 60 | register int i, addr; |
| 61 | static int first = 1; |
| 62 | |
| 63 | i = 0; |
| 64 | for (hw = sc_table; i < NHPIB && hw < &sc_table[MAXCTLRS]; hw++) { |
| 65 | if (!HW_ISHPIB(hw)) |
| 66 | continue; |
| 67 | hs = &hpib_softc[i]; |
| 68 | hs->sc_addr = hw->hw_kva; |
| 69 | if (nhpibinit(i) == 0) |
| 70 | if (fhpibinit(i) == 0) |
| 71 | continue; |
| 72 | if (howto & RB_ASKNAME) |
| 73 | printf("hpib%d at sc%d\n", i, hw->hw_sc); |
| 74 | /* |
| 75 | * Adjust devtype on first call. This routine assumes that |
| 76 | * adaptor is in the high byte of devtype. |
| 77 | */ |
| 78 | if (first && ((devtype >> 24) & 0xff) == hw->hw_sc) { |
| 79 | devtype = (devtype & 0x00ffffff) | (i << 24); |
| 80 | first = 0; |
| 81 | } |
| 82 | hs->sc_alive = 1; |
| 83 | i++; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | hpibalive(unit) |
| 88 | register int unit; |
| 89 | { |
| 90 | unit = hpibunit(unit); |
| 91 | if (unit >= NHPIB || hpib_softc[unit].sc_alive == 0) |
| 92 | return (0); |
| 93 | return (1); |
| 94 | } |
| 95 | |
| 96 | hpibid(unit) |
| 97 | register int unit; |
| 98 | { |
| 99 | register struct hpib_softc *hs = &hpib_softc[hpibunit(unit)]; |
| 100 | register int slave; |
| 101 | short id; |
| 102 | |
| 103 | slave = hpibslave(unit); |
| 104 | unit = hpibunit(unit); |
| 105 | if (hs->sc_type == HPIBC) |
| 106 | slave = fhpibrecv(unit, 31, slave, &id, 2); |
| 107 | else |
| 108 | slave = nhpibrecv(unit, 31, slave, &id, 2); |
| 109 | if (slave != 2) |
| 110 | return (0); |
| 111 | return (id); |
| 112 | } |
| 113 | |
| 114 | hpibsend(unit, sec, buf, cnt) |
| 115 | register char *buf; |
| 116 | register int cnt; |
| 117 | { |
| 118 | register struct hpib_softc *hs = &hpib_softc[hpibunit(unit)]; |
| 119 | register int slave; |
| 120 | |
| 121 | slave = hpibslave(unit); |
| 122 | unit = hpibunit(unit); |
| 123 | if (hs->sc_type == HPIBC) |
| 124 | return (fhpibsend(unit, slave, sec, buf, cnt)); |
| 125 | else |
| 126 | return (nhpibsend(unit, slave, sec, buf, cnt)); |
| 127 | } |
| 128 | |
| 129 | hpibrecv(unit, sec, buf, cnt) |
| 130 | register char *buf; |
| 131 | register int cnt; |
| 132 | { |
| 133 | register struct hpib_softc *hs = &hpib_softc[hpibunit(unit)]; |
| 134 | register int slave; |
| 135 | |
| 136 | slave = hpibslave(unit); |
| 137 | unit = hpibunit(unit); |
| 138 | if (hs->sc_type == HPIBC) |
| 139 | return (fhpibrecv(unit, slave, sec, buf, cnt)); |
| 140 | else |
| 141 | return (nhpibrecv(unit, slave, sec, buf, cnt)); |
| 142 | } |
| 143 | |
| 144 | hpibswait(unit) |
| 145 | register int unit; |
| 146 | { |
| 147 | register int timo = 1000000; |
| 148 | register int slave = 0x80 >> hpibslave(unit); |
| 149 | register int (*poll)(); |
| 150 | |
| 151 | unit = hpibunit(unit); |
| 152 | if (hpib_softc[unit].sc_type == HPIBC) |
| 153 | poll = fhpibppoll; |
| 154 | else |
| 155 | poll = nhpibppoll; |
| 156 | while (((*poll)(unit) & slave) == 0) |
| 157 | if (--timo == 0) |
| 158 | break; |
| 159 | if (timo == 0) |
| 160 | return (-1); |
| 161 | return (0); |
| 162 | } |
| 163 | |
| 164 | hpibgo(unit, sec, addr, count, flag) |
| 165 | register int unit; |
| 166 | char *addr; |
| 167 | { |
| 168 | register int slave; |
| 169 | |
| 170 | slave = hpibslave(unit); |
| 171 | unit = hpibunit(unit); |
| 172 | if (hpib_softc[unit].sc_type == HPIBC) |
| 173 | if (flag == F_READ) |
| 174 | fhpibrecv(unit, slave, sec, addr, count); |
| 175 | else |
| 176 | fhpibsend(unit, slave, sec, addr, count); |
| 177 | else |
| 178 | if (flag == F_READ) |
| 179 | nhpibrecv(unit, slave, sec, addr, count); |
| 180 | else |
| 181 | nhpibsend(unit, slave, sec, addr, count); |
| 182 | } |