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 | * @(#)nhpib.c 7.1 (Berkeley) %G% | |
| 8 | */ | |
| 9 | ||
| 10 | /* | |
| 11 | * Internal/98624 HPIB driver | |
| 12 | */ | |
| 13 | ||
| 14 | #include "param.h" | |
| 15 | #include "../hpdev/nhpibreg.h" | |
| 16 | #include "hpibvar.h" | |
| 17 | ||
| 18 | nhpibinit(unit) | |
| 19 | { | |
| 20 | register struct hpib_softc *hs = &hpib_softc[unit]; | |
| 21 | register struct nhpibdevice *hd = (struct nhpibdevice *)hs->sc_addr; | |
| 22 | extern int internalhpib; | |
| 23 | ||
| 24 | if ((int)hd == internalhpib) { | |
| 25 | hs->sc_type = HPIBA; | |
| 26 | hs->sc_ba = HPIBA_BA; | |
| 27 | } | |
| 28 | else if (hd->hpib_cid == HPIBB) { | |
| 29 | hs->sc_type = HPIBB; | |
| 30 | hs->sc_ba = hd->hpib_csa & CSA_BA; | |
| 31 | } | |
| 32 | else | |
| 33 | return(0); | |
| 34 | nhpibreset(unit); | |
| 35 | return(1); | |
| 36 | } | |
| 37 | ||
| 38 | nhpibreset(unit) | |
| 39 | { | |
| 40 | register struct hpib_softc *hs = &hpib_softc[unit]; | |
| 41 | register struct nhpibdevice *hd; | |
| 42 | ||
| 43 | hd = (struct nhpibdevice *)hs->sc_addr; | |
| 44 | hd->hpib_acr = AUX_SSWRST; | |
| 45 | hd->hpib_ar = hs->sc_ba; | |
| 46 | hd->hpib_lim = 0; | |
| 47 | hd->hpib_mim = 0; | |
| 48 | hd->hpib_acr = AUX_CDAI; | |
| 49 | hd->hpib_acr = AUX_CSHDW; | |
| 50 | hd->hpib_acr = AUX_SSTD1; | |
| 51 | hd->hpib_acr = AUX_SVSTD1; | |
| 52 | hd->hpib_acr = AUX_CPP; | |
| 53 | hd->hpib_acr = AUX_CHDFA; | |
| 54 | hd->hpib_acr = AUX_CHDFE; | |
| 55 | hd->hpib_acr = AUX_RHDF; | |
| 56 | hd->hpib_acr = AUX_CSWRST; | |
| 57 | hd->hpib_acr = AUX_TCA; | |
| 58 | hd->hpib_acr = AUX_CSRE; | |
| 59 | hd->hpib_acr = AUX_SSIC; | |
| 60 | DELAY(100); | |
| 61 | hd->hpib_acr = AUX_CSIC; | |
| 62 | hd->hpib_acr = AUX_SSRE; | |
| 63 | hd->hpib_data = C_DCL; | |
| 64 | DELAY(100000); | |
| 65 | } | |
| 66 | ||
| 67 | nhpibsend(unit, slave, sec, buf, cnt) | |
| 68 | register char *buf; | |
| 69 | register int cnt; | |
| 70 | { | |
| 71 | register struct hpib_softc *hs = &hpib_softc[unit]; | |
| 72 | register struct nhpibdevice *hd; | |
| 73 | register int origcnt = cnt; | |
| 74 | ||
| 75 | hd = (struct nhpibdevice *)hs->sc_addr; | |
| 76 | hd->hpib_acr = AUX_TCA; | |
| 77 | hd->hpib_data = C_UNL; | |
| 78 | nhpibowait(hd); | |
| 79 | hd->hpib_data = C_TAG + hs->sc_ba; | |
| 80 | hd->hpib_acr = AUX_STON; | |
| 81 | nhpibowait(hd); | |
| 82 | hd->hpib_data = C_LAG + slave; | |
| 83 | nhpibowait(hd); | |
| 84 | if (sec != -1) { | |
| 85 | hd->hpib_data = C_SCG + sec; | |
| 86 | nhpibowait(hd); | |
| 87 | } | |
| 88 | hd->hpib_acr = AUX_GTS; | |
| 89 | if (cnt) { | |
| 90 | while (--cnt) { | |
| 91 | hd->hpib_data = *buf++; | |
| 92 | if (nhpibowait(hd) < 0) | |
| 93 | break; | |
| 94 | } | |
| 95 | hd->hpib_acr = AUX_EOI; | |
| 96 | hd->hpib_data = *buf; | |
| 97 | if (nhpibowait(hd) < 0) | |
| 98 | cnt++; | |
| 99 | hd->hpib_acr = AUX_TCA; | |
| 100 | } | |
| 101 | return(origcnt - cnt); | |
| 102 | } | |
| 103 | ||
| 104 | nhpibrecv(unit, slave, sec, buf, cnt) | |
| 105 | register char *buf; | |
| 106 | register int cnt; | |
| 107 | { | |
| 108 | register struct hpib_softc *hs = &hpib_softc[unit]; | |
| 109 | register struct nhpibdevice *hd; | |
| 110 | register int origcnt = cnt; | |
| 111 | ||
| 112 | hd = (struct nhpibdevice *)hs->sc_addr; | |
| 113 | hd->hpib_acr = AUX_TCA; | |
| 114 | hd->hpib_data = C_UNL; | |
| 115 | nhpibowait(hd); | |
| 116 | hd->hpib_data = C_LAG + hs->sc_ba; | |
| 117 | hd->hpib_acr = AUX_SLON; | |
| 118 | nhpibowait(hd); | |
| 119 | hd->hpib_data = C_TAG + slave; | |
| 120 | nhpibowait(hd); | |
| 121 | if (sec != -1) { | |
| 122 | hd->hpib_data = C_SCG + sec; | |
| 123 | nhpibowait(hd); | |
| 124 | } | |
| 125 | hd->hpib_acr = AUX_RHDF; | |
| 126 | hd->hpib_acr = AUX_GTS; | |
| 127 | if (cnt) { | |
| 128 | while (--cnt >= 0) { | |
| 129 | if (nhpibiwait(hd) < 0) | |
| 130 | break; | |
| 131 | *buf++ = hd->hpib_data; | |
| 132 | } | |
| 133 | cnt++; | |
| 134 | hd->hpib_acr = AUX_TCA; | |
| 135 | } | |
| 136 | return(origcnt - cnt); | |
| 137 | } | |
| 138 | ||
| 139 | nhpibppoll(unit) | |
| 140 | register int unit; | |
| 141 | { | |
| 142 | register struct hpib_softc *hs = &hpib_softc[unit]; | |
| 143 | register struct nhpibdevice *hd; | |
| 144 | register int ppoll; | |
| 145 | ||
| 146 | hd = (struct nhpibdevice *)hs->sc_addr; | |
| 147 | hd->hpib_acr = AUX_SPP; | |
| 148 | DELAY(25); | |
| 149 | ppoll = hd->hpib_cpt; | |
| 150 | hd->hpib_acr = AUX_CPP; | |
| 151 | return(ppoll); | |
| 152 | } | |
| 153 | ||
| 154 | nhpibowait(hd) | |
| 155 | register struct nhpibdevice *hd; | |
| 156 | { | |
| 157 | register int timo = 100000; | |
| 158 | ||
| 159 | while ((hd->hpib_mis & MIS_BO) == 0 && --timo) | |
| 160 | ; | |
| 161 | if (timo == 0) | |
| 162 | return(-1); | |
| 163 | return(0); | |
| 164 | } | |
| 165 | ||
| 166 | nhpibiwait(hd) | |
| 167 | register struct nhpibdevice *hd; | |
| 168 | { | |
| 169 | register int timo = 100000; | |
| 170 | ||
| 171 | while ((hd->hpib_mis & MIS_BI) == 0 && --timo) | |
| 172 | ; | |
| 173 | if (timo == 0) | |
| 174 | return(-1); | |
| 175 | return(0); | |
| 176 | } |