1 /* $NetBSD: hpib.c,v 1.9 2007/03/04 05:59:50 christos Exp $ */
2
3 /*
4 * Copyright (c) 1982, 1990, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)hpib.c 8.1 (Berkeley) 6/10/93
32 */
33
34 /*
35 * HPIB driver
36 */
37 #include <sys/param.h>
38 #include <sys/reboot.h>
39
40 #include <lib/libsa/stand.h>
41
42 #include <hp300/stand/common/device.h>
43 #include <hp300/stand/common/hpibvar.h>
44 #include <hp300/stand/common/samachdep.h>
45
46 #include <hp300/dev/dioreg.h>
47
48 int internalhpib = IIOV(DIO_IHPIBADDR);
49
50 struct hpib_softc hpib_softc[NHPIB];
51
52 void
hpibinit(void)53 hpibinit(void)
54 {
55 struct hp_hw *hw;
56 struct hpib_softc *hs;
57 int i;
58
59 i = 0;
60 for (hw = sc_table; i < NHPIB && hw < &sc_table[MAXCTLRS]; hw++) {
61 if (!HW_ISHPIB(hw))
62 continue;
63 hs = &hpib_softc[i];
64 hs->sc_addr = hw->hw_kva;
65 if (nhpibinit(i) == 0)
66 if (fhpibinit(i) == 0)
67 continue;
68 if (howto & RB_ASKNAME)
69 printf("hpib%d at sc%d\n", i, hw->hw_sc);
70 hw->hw_pa = (void *) i; /* XXX for autoconfig */
71 hs->sc_alive = 1;
72 i++;
73 }
74 }
75
76 int
hpibalive(int unit)77 hpibalive(int unit)
78 {
79 if (unit >= NHPIB || hpib_softc[unit].sc_alive == 0)
80 return 0;
81 return 1;
82 }
83
84 int
hpibid(int unit,int slave)85 hpibid(int unit, int slave)
86 {
87 short id;
88 int rv;
89
90 if (hpib_softc[unit].sc_type == HPIBC)
91 rv = fhpibrecv(unit, 31, slave, (uint8_t *)&id, 2);
92 else
93 rv = nhpibrecv(unit, 31, slave, (uint8_t *)&id, 2);
94 if (rv != 2)
95 return 0;
96 return id;
97 }
98
99 int
hpibsend(int unit,int slave,int sec,uint8_t * buf,int cnt)100 hpibsend(int unit, int slave, int sec, uint8_t *buf, int cnt)
101 {
102
103 if (hpib_softc[unit].sc_type == HPIBC)
104 return (fhpibsend(unit, slave, sec, buf, cnt));
105 return nhpibsend(unit, slave, sec, buf, cnt);
106 }
107
108 int
hpibrecv(int unit,int slave,int sec,uint8_t * buf,int cnt)109 hpibrecv(int unit, int slave, int sec, uint8_t *buf, int cnt)
110 {
111
112 if (hpib_softc[unit].sc_type == HPIBC)
113 return (fhpibrecv(unit, slave, sec, buf, cnt));
114 return nhpibrecv(unit, slave, sec, buf, cnt);
115 }
116
117 int
hpibswait(int unit,int slave)118 hpibswait(int unit, int slave)
119 {
120 int timo = 1000000;
121 int (*poll)(int);
122
123 slave = 0x80 >> slave;
124 if (hpib_softc[unit].sc_type == HPIBC)
125 poll = fhpibppoll;
126 else
127 poll = nhpibppoll;
128 while (((*poll)(unit) & slave) == 0)
129 if (--timo == 0)
130 break;
131 if (timo == 0)
132 return -1;
133 return 0;
134 }
135
136 void
hpibgo(int unit,int slave,int sec,uint8_t * addr,int count,int flag)137 hpibgo(int unit, int slave, int sec, uint8_t *addr, int count, int flag)
138 {
139
140 if (hpib_softc[unit].sc_type == HPIBC)
141 if (flag == F_READ)
142 fhpibrecv(unit, slave, sec, addr, count);
143 else
144 fhpibsend(unit, slave, sec, addr, count);
145 else
146 if (flag == F_READ)
147 nhpibrecv(unit, slave, sec, addr, count);
148 else
149 nhpibsend(unit, slave, sec, addr, count);
150 }
151