| 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 | } |