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1 | /* |
2 | * Copyright (c) 1982, 1990 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
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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. | |
a8fd2d0d | 20 | * |
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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 | * @(#)nhpib.c 7.2 (Berkeley) 12/16/90 | |
a8fd2d0d KM |
34 | */ |
35 | ||
36 | /* | |
37 | * Internal/98624 HPIB driver | |
38 | */ | |
39 | ||
b28b3a13 KB |
40 | #include "sys/param.h" |
41 | #include "../dev/nhpibreg.h" | |
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42 | #include "hpibvar.h" |
43 | ||
44 | nhpibinit(unit) | |
45 | { | |
46 | register struct hpib_softc *hs = &hpib_softc[unit]; | |
47 | register struct nhpibdevice *hd = (struct nhpibdevice *)hs->sc_addr; | |
48 | extern int internalhpib; | |
49 | ||
50 | if ((int)hd == internalhpib) { | |
51 | hs->sc_type = HPIBA; | |
52 | hs->sc_ba = HPIBA_BA; | |
53 | } | |
54 | else if (hd->hpib_cid == HPIBB) { | |
55 | hs->sc_type = HPIBB; | |
56 | hs->sc_ba = hd->hpib_csa & CSA_BA; | |
57 | } | |
58 | else | |
59 | return(0); | |
60 | nhpibreset(unit); | |
61 | return(1); | |
62 | } | |
63 | ||
64 | nhpibreset(unit) | |
65 | { | |
66 | register struct hpib_softc *hs = &hpib_softc[unit]; | |
67 | register struct nhpibdevice *hd; | |
68 | ||
69 | hd = (struct nhpibdevice *)hs->sc_addr; | |
70 | hd->hpib_acr = AUX_SSWRST; | |
71 | hd->hpib_ar = hs->sc_ba; | |
72 | hd->hpib_lim = 0; | |
73 | hd->hpib_mim = 0; | |
74 | hd->hpib_acr = AUX_CDAI; | |
75 | hd->hpib_acr = AUX_CSHDW; | |
76 | hd->hpib_acr = AUX_SSTD1; | |
77 | hd->hpib_acr = AUX_SVSTD1; | |
78 | hd->hpib_acr = AUX_CPP; | |
79 | hd->hpib_acr = AUX_CHDFA; | |
80 | hd->hpib_acr = AUX_CHDFE; | |
81 | hd->hpib_acr = AUX_RHDF; | |
82 | hd->hpib_acr = AUX_CSWRST; | |
83 | hd->hpib_acr = AUX_TCA; | |
84 | hd->hpib_acr = AUX_CSRE; | |
85 | hd->hpib_acr = AUX_SSIC; | |
86 | DELAY(100); | |
87 | hd->hpib_acr = AUX_CSIC; | |
88 | hd->hpib_acr = AUX_SSRE; | |
89 | hd->hpib_data = C_DCL; | |
90 | DELAY(100000); | |
91 | } | |
92 | ||
93 | nhpibsend(unit, slave, sec, buf, cnt) | |
94 | register char *buf; | |
95 | register int cnt; | |
96 | { | |
97 | register struct hpib_softc *hs = &hpib_softc[unit]; | |
98 | register struct nhpibdevice *hd; | |
99 | register int origcnt = cnt; | |
100 | ||
101 | hd = (struct nhpibdevice *)hs->sc_addr; | |
102 | hd->hpib_acr = AUX_TCA; | |
103 | hd->hpib_data = C_UNL; | |
104 | nhpibowait(hd); | |
105 | hd->hpib_data = C_TAG + hs->sc_ba; | |
106 | hd->hpib_acr = AUX_STON; | |
107 | nhpibowait(hd); | |
108 | hd->hpib_data = C_LAG + slave; | |
109 | nhpibowait(hd); | |
110 | if (sec != -1) { | |
111 | hd->hpib_data = C_SCG + sec; | |
112 | nhpibowait(hd); | |
113 | } | |
114 | hd->hpib_acr = AUX_GTS; | |
115 | if (cnt) { | |
116 | while (--cnt) { | |
117 | hd->hpib_data = *buf++; | |
118 | if (nhpibowait(hd) < 0) | |
119 | break; | |
120 | } | |
121 | hd->hpib_acr = AUX_EOI; | |
122 | hd->hpib_data = *buf; | |
123 | if (nhpibowait(hd) < 0) | |
124 | cnt++; | |
125 | hd->hpib_acr = AUX_TCA; | |
126 | } | |
127 | return(origcnt - cnt); | |
128 | } | |
129 | ||
130 | nhpibrecv(unit, slave, sec, buf, cnt) | |
131 | register char *buf; | |
132 | register int cnt; | |
133 | { | |
134 | register struct hpib_softc *hs = &hpib_softc[unit]; | |
135 | register struct nhpibdevice *hd; | |
136 | register int origcnt = cnt; | |
137 | ||
138 | hd = (struct nhpibdevice *)hs->sc_addr; | |
139 | hd->hpib_acr = AUX_TCA; | |
140 | hd->hpib_data = C_UNL; | |
141 | nhpibowait(hd); | |
142 | hd->hpib_data = C_LAG + hs->sc_ba; | |
143 | hd->hpib_acr = AUX_SLON; | |
144 | nhpibowait(hd); | |
145 | hd->hpib_data = C_TAG + slave; | |
146 | nhpibowait(hd); | |
147 | if (sec != -1) { | |
148 | hd->hpib_data = C_SCG + sec; | |
149 | nhpibowait(hd); | |
150 | } | |
151 | hd->hpib_acr = AUX_RHDF; | |
152 | hd->hpib_acr = AUX_GTS; | |
153 | if (cnt) { | |
154 | while (--cnt >= 0) { | |
155 | if (nhpibiwait(hd) < 0) | |
156 | break; | |
157 | *buf++ = hd->hpib_data; | |
158 | } | |
159 | cnt++; | |
160 | hd->hpib_acr = AUX_TCA; | |
161 | } | |
162 | return(origcnt - cnt); | |
163 | } | |
164 | ||
165 | nhpibppoll(unit) | |
166 | register int unit; | |
167 | { | |
168 | register struct hpib_softc *hs = &hpib_softc[unit]; | |
169 | register struct nhpibdevice *hd; | |
170 | register int ppoll; | |
171 | ||
172 | hd = (struct nhpibdevice *)hs->sc_addr; | |
173 | hd->hpib_acr = AUX_SPP; | |
174 | DELAY(25); | |
175 | ppoll = hd->hpib_cpt; | |
176 | hd->hpib_acr = AUX_CPP; | |
177 | return(ppoll); | |
178 | } | |
179 | ||
180 | nhpibowait(hd) | |
181 | register struct nhpibdevice *hd; | |
182 | { | |
183 | register int timo = 100000; | |
184 | ||
185 | while ((hd->hpib_mis & MIS_BO) == 0 && --timo) | |
186 | ; | |
187 | if (timo == 0) | |
188 | return(-1); | |
189 | return(0); | |
190 | } | |
191 | ||
192 | nhpibiwait(hd) | |
193 | register struct nhpibdevice *hd; | |
194 | { | |
195 | register int timo = 100000; | |
196 | ||
197 | while ((hd->hpib_mis & MIS_BI) == 0 && --timo) | |
198 | ; | |
199 | if (timo == 0) | |
200 | return(-1); | |
201 | return(0); | |
202 | } |