1 /* $NetBSD: promdev.c,v 1.7 2017/02/01 18:24:22 christos Exp $ */
2
3 /*
4 * Copyright (c) 1995 Gordon W. Ross
5 * Copyright (c) 1993 Paul Kranenburg
6 * 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. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Paul Kranenburg.
19 * 4. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <sys/types.h>
35 #include <machine/mon.h>
36
37 #include <stand.h>
38
39 #include "libsa.h"
40 #include "dvma.h"
41 #include "saio.h"
42
43 int promdev_inuse;
44
45 #ifdef DEBUG_PROM
46 # define DPRINTF(fmt, ...) \
47 do { \
48 if (debug) \
49 printf("%s: " fmt "\n", __func__, __VA_ARGS__); \
50 } while (/*CONSTCOND*/0)
51 #else
52 # define DPRINTF(fmt, ...)
53 #endif
54
55 /*
56 * Note: caller sets the fields:
57 * si->si_boottab
58 * si->si_ctlr
59 * si->si_unit
60 * si->si_boff
61 */
62
63 int
prom_iopen(struct saioreq * si)64 prom_iopen(struct saioreq *si)
65 {
66 struct boottab *ops;
67 struct devinfo *dip;
68 int ctlr, error;
69
70 if (promdev_inuse)
71 return EMFILE;
72
73 ops = si->si_boottab;
74 dip = ops->b_devinfo;
75 ctlr = si->si_ctlr;
76
77
78 DPRINTF("Boot device type: %s", ops->b_desc);
79
80 if (!_is2) {
81 #ifdef DEBUG_PROM
82 if (debug) {
83 printf("d_devbytes=%d\n", dip->d_devbytes);
84 printf("d_dmabytes=%d\n", dip->d_dmabytes);
85 printf("d_localbytes=%d\n", dip->d_localbytes);
86 printf("d_devtype=%d\n", dip->d_devtype);
87 printf("d_maxiobytes=%d\n", dip->d_maxiobytes);
88 printf("d_stdcount=%d\n", dip->d_stdcount);
89 for (int i = 0; i < dip->d_stdcount; i++)
90 printf("d_stdaddrs[%d]=%#x\n",
91 i, dip->d_stdaddrs[0]);
92 }
93 #endif
94
95 if (dip->d_devbytes && dip->d_stdcount) {
96 if (ctlr >= dip->d_stdcount) {
97 putstr("Invalid controller number\n");
98 return ENXIO;
99 }
100 si->si_devaddr = dev_mapin(dip->d_devtype,
101 dip->d_stdaddrs[ctlr], dip->d_devbytes);
102 DPRINTF("devaddr=%#x", si->si_devaddr);
103 }
104
105 if (dip->d_dmabytes) {
106 si->si_dmaaddr = dvma_alloc(dip->d_dmabytes);
107 DPRINTF("dmaaddr=%#x", si->si_dmaaddr);
108 }
109
110 if (dip->d_localbytes) {
111 si->si_devdata = alloc(dip->d_localbytes);
112 DPRINTF("devdata=%#x", si->si_devdata);
113 }
114 }
115
116 /* OK, call the PROM device open routine. */
117 DPRINTF("calling prom open... %p", si);
118 error = (*ops->b_open)(si);
119 DPRINTF("prom open returned %d", error);
120 if (error != 0) {
121 #if 0 /* XXX: printf is too big for bootxx */
122 printf("%s: \"%s\" error=%d\n", __func__,
123 ops->b_desc, error);
124 #else
125 putstr("prom_iopen: prom open failed");
126 #endif
127 return ENXIO;
128 }
129
130 promdev_inuse++;
131 return 0;
132 }
133
134 void
prom_iclose(struct saioreq * si)135 prom_iclose(struct saioreq *si)
136 {
137 struct boottab *ops;
138
139 if (promdev_inuse == 0)
140 return;
141
142 ops = si->si_boottab;
143
144 DPRINTF("calling prom close... %p", si);
145 (*ops->b_close)(si);
146
147 promdev_inuse = 0;
148 }
149