1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/* $Id: bugdev.c,v 1.4 1995/12/06 10:54:55 deraadt Exp $ */
/*
* Copyright (c) 1993 Paul Kranenburg
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Paul Kranenburg.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/disklabel.h>
#include <machine/prom.h>
#include "stand.h"
int bugscopen __P((struct open_file *, ...));
int bugscclose __P((struct open_file *));
int bugscioctl __P((struct open_file *, u_long, void *));
int bugscstrategy __P((void *, int, daddr_t, size_t, void *, size_t *));
void cputobsdlabel __P((struct disklabel *lp, struct cpu_disklabel *clp));
struct devsw devsw[] = {
{ "bugsc", bugscstrategy, bugscopen, bugscclose, bugscioctl },
};
int ndevs = (sizeof(devsw)/sizeof(devsw[0]));
extern struct mvmeprom_args bugargs;
int errno;
struct bugsc_softc {
int fd; /* Prom file descriptor */
int poff; /* Partition offset */
int psize; /* Partition size */
short ctrl;
short dev;
} bugsc_softc[1];
int
devopen(f, fname, file)
struct open_file *f;
const char *fname;
char **file;
{
register struct bugsc_softc *pp = &bugsc_softc[0];
int error, i, dn = 0, pn = 0;
char *dev, *cp;
static char iobuf[MAXBSIZE];
struct disklabel sdlabel;
dev = bugargs.arg_start;
/*
* Extract partition # from boot device string.
*/
for (cp = dev; *cp; cp++) /* void */;
while (*cp != '/' && cp > dev) {
if (*cp == ':')
pn = *(cp+1) - 'a';
--cp;
}
pp->fd = bugscopen(f);
if (pp->fd < 0) {
printf("Can't open device `%s'\n", dev);
return (ENXIO);
}
error = bugscstrategy(pp, F_READ, LABELSECTOR, DEV_BSIZE, iobuf, &i);
if (error)
return (error);
if (i != DEV_BSIZE)
return (EINVAL);
cputobsdlabel(&sdlabel, (struct cpu_disklabel *)iobuf);
pp->poff = sdlabel.d_partitions[pn].p_offset;
pp->psize = sdlabel.d_partitions[pn].p_size;
f->f_dev = devsw;
f->f_devdata = (void *)pp;
*file = (char *)fname;
return (0);
}
/* silly block scale factor */
#define BUG_BLOCK_SIZE 256
#define BUG_SCALE (512/BUG_BLOCK_SIZE)
int
bugscstrategy(devdata, func, dblk, size, buf, rsize)
void *devdata;
int func;
daddr_t dblk;
size_t size;
void *buf;
size_t *rsize;
{
struct mvmeprom_dskio dio;
register struct bugsc_softc *pp = (struct bugsc_softc *)devdata;
daddr_t blk = dblk + pp->poff;
twiddle();
dio.ctrl_lun = pp->ctrl;
dio.dev_lun = pp->dev;
dio.status = 0;
dio.pbuffer = buf;
dio.blk_num = blk * BUG_SCALE;
dio.blk_cnt = size / BUG_BLOCK_SIZE; /* assumed size in bytes */
dio.flag = 0;
dio.addr_mod = 0;
#ifdef 0
printf("bugscstrategy: size=%d blk=%d buf=%x\n", size, blk, buf);
printf("ctrl %d dev %d\n", dio.ctrl_lun, dio.dev_lun);
#endif
mvmeprom_diskrd(&dio);
*rsize = dio.blk_cnt * BUG_BLOCK_SIZE;
#ifdef 0
printf("rsize %d status %x\n", *rsize, dio.status);
#endif
if (dio.status)
return (EIO);
return (0);
}
int
bugscopen(f)
struct open_file *f;
{
#ifdef DEBUG
printf("bugscopen:\n");
#endif
f->f_devdata = (void *)bugsc_softc;
bugsc_softc[0].ctrl = (short)bugargs.ctrl_lun;
bugsc_softc[0].dev = (short)bugargs.dev_lun;
printf("using mvmebug ctrl %d dev %d\n",
bugsc_softc[0].ctrl, bugsc_softc[0].dev);
return (0);
}
int
bugscclose(f)
struct open_file *f;
{
return (EIO);
}
int
bugscioctl(f, cmd, data)
struct open_file *f;
u_long cmd;
void *data;
{
return (EIO);
}
void
cputobsdlabel(lp, clp)
struct disklabel *lp;
struct cpu_disklabel *clp;
{
int i;
lp->d_magic = clp->magic1;
lp->d_type = clp->type;
lp->d_subtype = clp->subtype;
bcopy(clp->vid_vd, lp->d_typename, 16);
bcopy(clp->packname, lp->d_packname, 16);
lp->d_secsize = clp->cfg_psm;
lp->d_nsectors = clp->cfg_spt;
lp->d_ncylinders = clp->cfg_trk; /* trk is really num of cyl! */
lp->d_ntracks = clp->cfg_hds;
lp->d_secpercyl = clp->secpercyl;
lp->d_secperunit = clp->secperunit;
lp->d_secpercyl = clp->secpercyl;
lp->d_secperunit = clp->secperunit;
lp->d_sparespertrack = clp->sparespertrack;
lp->d_sparespercyl = clp->sparespercyl;
lp->d_acylinders = clp->acylinders;
lp->d_rpm = clp->rpm;
lp->d_interleave = clp->cfg_ilv;
lp->d_trackskew = clp->cfg_sof;
lp->d_cylskew = clp->cylskew;
lp->d_headswitch = clp->headswitch;
/* this silly table is for winchester drives */
switch (clp->cfg_ssr) {
case 0:
lp->d_trkseek = 0;
break;
case 1:
lp->d_trkseek = 6;
break;
case 2:
lp->d_trkseek = 10;
break;
case 3:
lp->d_trkseek = 15;
break;
case 4:
lp->d_trkseek = 20;
break;
default:
lp->d_trkseek = 0;
break;
}
lp->d_flags = clp->flags;
for (i = 0; i < NDDATA; i++)
lp->d_drivedata[i] = clp->drivedata[i];
for (i = 0; i < NSPARE; i++)
lp->d_spare[i] = clp->spare[i];
lp->d_magic2 = clp->magic2;
lp->d_checksum = clp->checksum;
lp->d_npartitions = clp->partitions;
lp->d_bbsize = clp->bbsize;
lp->d_sbsize = clp->sbsize;
bcopy(clp->vid_4, &(lp->d_partitions[0]), sizeof (struct partition) * 4);
bcopy(clp->cfg_4, &(lp->d_partitions[4]), sizeof (struct partition) * 12);
}
|
