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 | * | |
| 8aceccb5 | 7 | * @(#)hpib.c 7.4 (Berkeley) %G% |
| a8fd2d0d KM |
8 | */ |
| 9 | ||
| 10 | /* | |
| 11 | * HPIB driver | |
| 12 | */ | |
| 8aceccb5 KB |
13 | #include <sys/param.h> |
| 14 | #include <sys/reboot.h> | |
| b28b3a13 | 15 | #include "../dev/device.h" |
| a8fd2d0d KM |
16 | #include "hpibvar.h" |
| 17 | ||
| 18 | #include "saio.h" | |
| 19 | #include "samachdep.h" | |
| 20 | ||
| 21 | int internalhpib = 0x478000; | |
| 22 | int fhpibppoll(), nhpibppoll(); | |
| 23 | ||
| 24 | struct hpib_softc hpib_softc[NHPIB]; | |
| 25 | ||
| 26 | #define hpibunit(x) ((x) >> 3) | |
| 27 | #define hpibslave(x) ((x) & 7) | |
| 28 | ||
| 29 | hpibinit() | |
| 30 | { | |
| 31 | extern struct hp_hw sc_table[]; | |
| 32 | register struct hp_hw *hw; | |
| 33 | register struct hpib_softc *hs; | |
| 34 | register int i, addr; | |
| 35 | static int first = 1; | |
| 36 | ||
| 37 | i = 0; | |
| 38 | for (hw = sc_table; i < NHPIB && hw < &sc_table[MAX_CTLR]; hw++) { | |
| 39 | if (hw->hw_type != HPIB) | |
| 40 | continue; | |
| 41 | hs = &hpib_softc[i]; | |
| 42 | hs->sc_addr = hw->hw_addr; | |
| 43 | if (nhpibinit(i) == 0) | |
| 44 | if (fhpibinit(i) == 0) | |
| 45 | continue; | |
| 46 | if (howto & RB_ASKNAME) | |
| 47 | printf("hpib%d at sc%d\n", i, hw->hw_sc); | |
| 48 | /* | |
| 49 | * Adjust devtype on first call. This routine assumes that | |
| 50 | * adaptor is in the high byte of devtype. | |
| 51 | */ | |
| 52 | if (first && ((devtype >> 24) & 0xff) == hw->hw_sc) { | |
| 53 | devtype = (devtype & 0x00ffffff) | (i << 24); | |
| 54 | first = 0; | |
| 55 | } | |
| 56 | hs->sc_alive = 1; | |
| 57 | i++; | |
| 58 | } | |
| 59 | } | |
| 60 | ||
| 61 | hpibalive(unit) | |
| 62 | register int unit; | |
| 63 | { | |
| 64 | unit = hpibunit(unit); | |
| 65 | if (unit >= NHPIB || hpib_softc[unit].sc_alive == 0) | |
| 66 | return (0); | |
| 67 | return (1); | |
| 68 | } | |
| 69 | ||
| 70 | hpibid(unit) | |
| 71 | register int unit; | |
| 72 | { | |
| 73 | register struct hpib_softc *hs = &hpib_softc[hpibunit(unit)]; | |
| 74 | register int slave; | |
| 75 | short id; | |
| 76 | ||
| 77 | slave = hpibslave(unit); | |
| 78 | unit = hpibunit(unit); | |
| 79 | if (hs->sc_type == HPIBC) | |
| 80 | slave = fhpibrecv(unit, 31, slave, &id, 2); | |
| 81 | else | |
| 82 | slave = nhpibrecv(unit, 31, slave, &id, 2); | |
| 83 | if (slave != 2) | |
| 84 | return (0); | |
| 85 | return (id); | |
| 86 | } | |
| 87 | ||
| 88 | hpibsend(unit, sec, buf, cnt) | |
| 89 | register char *buf; | |
| 90 | register int cnt; | |
| 91 | { | |
| 92 | register struct hpib_softc *hs = &hpib_softc[hpibunit(unit)]; | |
| 93 | register int slave; | |
| 94 | ||
| 95 | slave = hpibslave(unit); | |
| 96 | unit = hpibunit(unit); | |
| 97 | if (hs->sc_type == HPIBC) | |
| 98 | return (fhpibsend(unit, slave, sec, buf, cnt)); | |
| 99 | else | |
| 100 | return (nhpibsend(unit, slave, sec, buf, cnt)); | |
| 101 | } | |
| 102 | ||
| 103 | hpibrecv(unit, sec, buf, cnt) | |
| 104 | register char *buf; | |
| 105 | register int cnt; | |
| 106 | { | |
| 107 | register struct hpib_softc *hs = &hpib_softc[hpibunit(unit)]; | |
| 108 | register int slave; | |
| 109 | ||
| 110 | slave = hpibslave(unit); | |
| 111 | unit = hpibunit(unit); | |
| 112 | if (hs->sc_type == HPIBC) | |
| 113 | return (fhpibrecv(unit, slave, sec, buf, cnt)); | |
| 114 | else | |
| 115 | return (nhpibrecv(unit, slave, sec, buf, cnt)); | |
| 116 | } | |
| 117 | ||
| 118 | hpibswait(unit) | |
| 119 | register int unit; | |
| 120 | { | |
| 121 | register int timo = 1000000; | |
| 122 | register int slave = 0x80 >> hpibslave(unit); | |
| 123 | register int (*poll)(); | |
| 124 | ||
| 125 | unit = hpibunit(unit); | |
| 126 | if (hpib_softc[unit].sc_type == HPIBC) | |
| 127 | poll = fhpibppoll; | |
| 128 | else | |
| 129 | poll = nhpibppoll; | |
| 130 | while (((*poll)(unit) & slave) == 0) | |
| 131 | if (--timo == 0) | |
| 132 | break; | |
| 133 | if (timo == 0) | |
| 134 | return (-1); | |
| 135 | return (0); | |
| 136 | } | |
| 137 | ||
| 138 | hpibgo(unit, sec, addr, count, flag) | |
| 139 | register int unit; | |
| 140 | char *addr; | |
| 141 | { | |
| 142 | register int slave; | |
| 143 | ||
| 144 | slave = hpibslave(unit); | |
| 145 | unit = hpibunit(unit); | |
| 146 | if (hpib_softc[unit].sc_type == HPIBC) | |
| 8aceccb5 | 147 | if (flag == F_READ) |
| a8fd2d0d KM |
148 | fhpibrecv(unit, slave, sec, addr, count); |
| 149 | else | |
| 150 | fhpibsend(unit, slave, sec, addr, count); | |
| 151 | else | |
| 8aceccb5 | 152 | if (flag == F_READ) |
| a8fd2d0d KM |
153 | nhpibrecv(unit, slave, sec, addr, count); |
| 154 | else | |
| 155 | nhpibsend(unit, slave, sec, addr, count); | |
| 156 | } |