Annotation of sys/arch/hp300/stand/common/hpib.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: hpib.c,v 1.4 2006/08/17 06:31:10 miod Exp $ */
2: /* $NetBSD: hpib.c,v 1.2 1997/05/12 07:48:23 thorpej Exp $ */
3:
4: /*
5: * Copyright (c) 1982, 1990, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. Neither the name of the University nor the names of its contributors
17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: *
32: * @(#)hpib.c 8.1 (Berkeley) 6/10/93
33: */
34:
35: /*
36: * HPIB driver
37: */
38: #include <sys/param.h>
39: #include <sys/reboot.h>
40:
41: #include <lib/libsa/stand.h>
42:
43: #include "samachdep.h"
44: #include "device.h"
45: #include "hpibvar.h"
46:
47: #include <hp300/dev/dioreg.h>
48:
49: int internalhpib = IIOV(DIO_IHPIBADDR);
50:
51: struct hpib_softc hpib_softc[NHPIB];
52:
53: void
54: hpibinit()
55: {
56: extern struct hp_hw sc_table[];
57: struct hp_hw *hw;
58: struct hpib_softc *hs;
59: int i;
60:
61: i = 0;
62: for (hw = sc_table; i < NHPIB && hw < &sc_table[MAXCTLRS]; hw++) {
63: if (!HW_ISHPIB(hw))
64: continue;
65: hs = &hpib_softc[i];
66: hs->sc_addr = hw->hw_kva;
67: if (nhpibinit(i) == 0)
68: if (fhpibinit(i) == 0)
69: continue;
70: if (howto & RB_ASKNAME)
71: printf("hpib%d at sc%d\n", i, hw->hw_sc);
72: hw->hw_pa = (caddr_t) i; /* XXX for autoconfig */
73: hs->sc_alive = 1;
74: i++;
75: }
76: }
77:
78: int
79: hpibalive(int unit)
80: {
81: if (unit >= NHPIB || hpib_softc[unit].sc_alive == 0)
82: return (0);
83: return (1);
84: }
85:
86: int
87: hpibid(int unit, int slave)
88: {
89: short id;
90: int rv;
91:
92: if (hpib_softc[unit].sc_type == HPIBC)
93: rv = fhpibrecv(unit, 31, slave, (char *)&id, 2);
94: else
95: rv = nhpibrecv(unit, 31, slave, (char *)&id, 2);
96: if (rv != 2)
97: return (0);
98: return (id);
99: }
100:
101: int
102: hpibsend(int unit, int slave, int sec, void *buf, int cnt)
103: {
104: if (hpib_softc[unit].sc_type == HPIBC)
105: return (fhpibsend(unit, slave, sec, (char *)buf, cnt));
106: else
107: return (nhpibsend(unit, slave, sec, (char *)buf, cnt));
108: }
109:
110: int
111: hpibrecv(int unit, int slave, int sec, void *buf, int cnt)
112: {
113: if (hpib_softc[unit].sc_type == HPIBC)
114: return (fhpibrecv(unit, slave, sec, (char *)buf, cnt));
115: else
116: return (nhpibrecv(unit, slave, sec, (char *)buf, cnt));
117: }
118:
119: int
120: hpibswait(int unit, int slave)
121: {
122: int timo = 1000000;
123: int (*poll)(int);
124:
125: slave = 0x80 >> slave;
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: void
139: hpibgo(int unit, int slave, int sec, void *addr, int count, int flag)
140: {
141: if (hpib_softc[unit].sc_type == HPIBC) {
142: if (flag == F_READ)
143: fhpibrecv(unit, slave, sec, (char *)addr, count);
144: else
145: fhpibsend(unit, slave, sec, (char *)addr, count);
146: } else {
147: if (flag == F_READ)
148: nhpibrecv(unit, slave, sec, (char *)addr, count);
149: else
150: nhpibsend(unit, slave, sec, (char *)addr, count);
151: }
152: }
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