projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| a8fd2d0d KM |
1 | /* |
| 2 | * Copyright (c) 1982, 1990 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * %sccs.include.redist.c% | |
| 6 | * | |
| 7 | * @(#)hpib.c 7.1 (Berkeley) %G% | |
| 8 | */ | |
| 9 | ||
| 10 | /* | |
| 11 | * HPIB driver | |
| 12 | */ | |
| 13 | #include "../h/reboot.h" | |
| 14 | #include "../hpdev/device.h" | |
| 15 | #include "hpibvar.h" | |
| 16 | ||
| 17 | #include "saio.h" | |
| 18 | #include "samachdep.h" | |
| 19 | ||
| 20 | int internalhpib = 0x478000; | |
| 21 | int fhpibppoll(), nhpibppoll(); | |
| 22 | ||
| 23 | struct hpib_softc hpib_softc[NHPIB]; | |
| 24 | ||
| 25 | #define hpibunit(x) ((x) >> 3) | |
| 26 | #define hpibslave(x) ((x) & 7) | |
| 27 | ||
| 28 | hpibinit() | |
| 29 | { | |
| 30 | extern struct hp_hw sc_table[]; | |
| 31 | register struct hp_hw *hw; | |
| 32 | register struct hpib_softc *hs; | |
| 33 | register int i, addr; | |
| 34 | static int first = 1; | |
| 35 | ||
| 36 | i = 0; | |
| 37 | for (hw = sc_table; i < NHPIB && hw < &sc_table[MAX_CTLR]; hw++) { | |
| 38 | if (hw->hw_type != HPIB) | |
| 39 | continue; | |
| 40 | hs = &hpib_softc[i]; | |
| 41 | hs->sc_addr = hw->hw_addr; | |
| 42 | if (nhpibinit(i) == 0) | |
| 43 | if (fhpibinit(i) == 0) | |
| 44 | continue; | |
| 45 | if (howto & RB_ASKNAME) | |
| 46 | printf("hpib%d at sc%d\n", i, hw->hw_sc); | |
| 47 | /* | |
| 48 | * Adjust devtype on first call. This routine assumes that | |
| 49 | * adaptor is in the high byte of devtype. | |
| 50 | */ | |
| 51 | if (first && ((devtype >> 24) & 0xff) == hw->hw_sc) { | |
| 52 | devtype = (devtype & 0x00ffffff) | (i << 24); | |
| 53 | first = 0; | |
| 54 | } | |
| 55 | hs->sc_alive = 1; | |
| 56 | i++; | |
| 57 | } | |
| 58 | } | |
| 59 | ||
| 60 | hpibalive(unit) | |
| 61 | register int unit; | |
| 62 | { | |
| 63 | unit = hpibunit(unit); | |
| 64 | if (unit >= NHPIB || hpib_softc[unit].sc_alive == 0) | |
| 65 | return (0); | |
| 66 | return (1); | |
| 67 | } | |
| 68 | ||
| 69 | hpibid(unit) | |
| 70 | register int unit; | |
| 71 | { | |
| 72 | register struct hpib_softc *hs = &hpib_softc[hpibunit(unit)]; | |
| 73 | register int slave; | |
| 74 | short id; | |
| 75 | ||
| 76 | slave = hpibslave(unit); | |
| 77 | unit = hpibunit(unit); | |
| 78 | if (hs->sc_type == HPIBC) | |
| 79 | slave = fhpibrecv(unit, 31, slave, &id, 2); | |
| 80 | else | |
| 81 | slave = nhpibrecv(unit, 31, slave, &id, 2); | |
| 82 | if (slave != 2) | |
| 83 | return (0); | |
| 84 | return (id); | |
| 85 | } | |
| 86 | ||
| 87 | hpibsend(unit, sec, buf, cnt) | |
| 88 | register char *buf; | |
| 89 | register int cnt; | |
| 90 | { | |
| 91 | register struct hpib_softc *hs = &hpib_softc[hpibunit(unit)]; | |
| 92 | register int slave; | |
| 93 | ||
| 94 | slave = hpibslave(unit); | |
| 95 | unit = hpibunit(unit); | |
| 96 | if (hs->sc_type == HPIBC) | |
| 97 | return (fhpibsend(unit, slave, sec, buf, cnt)); | |
| 98 | else | |
| 99 | return (nhpibsend(unit, slave, sec, buf, cnt)); | |
| 100 | } | |
| 101 | ||
| 102 | hpibrecv(unit, sec, buf, cnt) | |
| 103 | register char *buf; | |
| 104 | register int cnt; | |
| 105 | { | |
| 106 | register struct hpib_softc *hs = &hpib_softc[hpibunit(unit)]; | |
| 107 | register int slave; | |
| 108 | ||
| 109 | slave = hpibslave(unit); | |
| 110 | unit = hpibunit(unit); | |
| 111 | if (hs->sc_type == HPIBC) | |
| 112 | return (fhpibrecv(unit, slave, sec, buf, cnt)); | |
| 113 | else | |
| 114 | return (nhpibrecv(unit, slave, sec, buf, cnt)); | |
| 115 | } | |
| 116 | ||
| 117 | hpibswait(unit) | |
| 118 | register int unit; | |
| 119 | { | |
| 120 | register int timo = 1000000; | |
| 121 | register int slave = 0x80 >> hpibslave(unit); | |
| 122 | register int (*poll)(); | |
| 123 | ||
| 124 | unit = hpibunit(unit); | |
| 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 | hpibgo(unit, sec, addr, count, flag) | |
| 138 | register int unit; | |
| 139 | char *addr; | |
| 140 | { | |
| 141 | register int slave; | |
| 142 | ||
| 143 | slave = hpibslave(unit); | |
| 144 | unit = hpibunit(unit); | |
| 145 | if (hpib_softc[unit].sc_type == HPIBC) | |
| 146 | if (flag == READ) | |
| 147 | fhpibrecv(unit, slave, sec, addr, count); | |
| 148 | else | |
| 149 | fhpibsend(unit, slave, sec, addr, count); | |
| 150 | else | |
| 151 | if (flag == READ) | |
| 152 | nhpibrecv(unit, slave, sec, addr, count); | |
| 153 | else | |
| 154 | nhpibsend(unit, slave, sec, addr, count); | |
| 155 | } |