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
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
/* $OpenBSD: sd.c,v 1.4 2004/08/03 21:44:35 miod Exp $ */
/* $NetBSD: sd.c,v 1.9 1996/12/21 21:34:41 thorpej Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Van Jacobson of Lawrence Berkeley Laboratory and the Systems
* Programming Group of the University of Utah Computer Science Department.
*
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* from: Utah $Hdr: sd.c 1.9 92/12/21$
*
* @(#)sd.c 8.1 (Berkeley) 6/10/93
*/
/*
* SCSI CCS disk driver
*/
#include <sys/param.h>
#include <sys/disklabel.h>
#include <lib/libsa/stand.h>
#include "samachdep.h"
#define _IOCTL_
#include "scsireg.h"
struct disklabel sdlabel;
struct sdminilabel {
u_short npart;
u_long offset[MAXPARTITIONS];
};
struct sd_softc {
int sc_ctlr;
int sc_unit;
int sc_part;
char sc_retry;
char sc_alive;
short sc_blkshift;
struct sdminilabel sc_pinfo;
} sd_softc[NSCSI][NSD];
#define SDRETRY 2
sdinit(ctlr, unit)
int ctlr, unit;
{
register struct sd_softc *ss = &sd_softc[ctlr][unit];
u_char stat;
int capbuf[2];
stat = scsi_test_unit_rdy(ctlr, unit);
if (stat) {
/* drive may be doing RTZ - wait a bit */
if (stat == STS_CHECKCOND) {
DELAY(1000000);
stat = scsi_test_unit_rdy(ctlr, unit);
}
if (stat) {
printf("sd(%d,%d,0,0): init failed (stat=%x)\n",
ctlr, unit, stat);
return (0);
}
}
/*
* try to get the drive block size.
*/
capbuf[0] = 0;
capbuf[1] = 0;
stat = scsi_read_capacity(ctlr, unit,
(u_char *)capbuf, sizeof(capbuf));
if (stat == 0) {
if (capbuf[1] > DEV_BSIZE)
for (; capbuf[1] > DEV_BSIZE; capbuf[1] >>= 1)
++ss->sc_blkshift;
}
ss->sc_alive = 1;
return (1);
}
sdreset(ctlr, unit)
int ctlr, unit;
{
}
char io_buf[MAXBSIZE];
sdgetinfo(ss)
register struct sd_softc *ss;
{
register struct sdminilabel *pi = &ss->sc_pinfo;
register struct disklabel *lp = &sdlabel;
char *msg, *getdisklabel();
int sdstrategy(), err, savepart;
size_t i;
bzero((caddr_t)lp, sizeof *lp);
lp->d_secsize = (DEV_BSIZE << ss->sc_blkshift);
/* Disklabel is always from RAW_PART. */
savepart = ss->sc_part;
ss->sc_part = RAW_PART;
err = sdstrategy(ss, F_READ, LABELSECTOR,
lp->d_secsize ? lp->d_secsize : DEV_BSIZE, io_buf, &i);
ss->sc_part = savepart;
if (err) {
printf("sdgetinfo: sdstrategy error %d\n", err);
return(0);
}
msg = getdisklabel(io_buf, lp);
if (msg) {
printf("sd(%d,%d,%d): WARNING: %s, ",
ss->sc_ctlr, ss->sc_unit, ss->sc_part, msg);
printf("defining `c' partition as entire disk\n");
pi->npart = 3;
#ifdef CD9660_DUMMYLABEL
pi->offset[0] = 0;
lp->d_partitions[0].p_fstype = FS_ISO9660; /* just for kicks */
#else
pi->offset[0] = -1;
#endif
pi->offset[1] = -1;
pi->offset[2] = 0;
} else {
pi->npart = lp->d_npartitions;
for (i = 0; i < pi->npart; i++)
pi->offset[i] = lp->d_partitions[i].p_size == 0 ?
-1 : lp->d_partitions[i].p_offset;
}
return(1);
}
sdopen(f, ctlr, unit, part)
struct open_file *f;
int ctlr, unit, part;
{
register struct sd_softc *ss;
#ifdef SD_DEBUG
if (debug)
printf("sdopen: ctlr=%d unit=%d part=%d\n",
ctlr, unit, part);
#endif
if (ctlr >= NSCSI || scsialive(ctlr) == 0)
return (EADAPT);
if (unit >= NSD)
return (ECTLR);
ss = &sd_softc[ctlr][unit];
ss->sc_part = part;
ss->sc_unit = unit;
ss->sc_ctlr = ctlr;
if (ss->sc_alive == 0) {
if (sdinit(ctlr, unit) == 0)
return (ENXIO);
if (sdgetinfo(ss) == 0)
return (ERDLAB);
}
if (part != RAW_PART && /* always allow RAW_PART to be opened */
(part >= ss->sc_pinfo.npart || ss->sc_pinfo.offset[part] == -1))
return (EPART);
f->f_devdata = (void *)ss;
return (0);
}
sdclose(f)
struct open_file *f;
{
struct sd_softc *ss = f->f_devdata;
/*
* Mark the disk `not alive' so that the disklabel
* will be re-loaded at next open.
*/
bzero(ss, sizeof(sd_softc));
f->f_devdata = NULL;
return (0);
}
sdstrategy(ss, func, dblk, size, v_buf, rsize)
register struct sd_softc *ss;
int func;
daddr_t dblk;
size_t size;
void *v_buf;
size_t *rsize;
{
char *buf = v_buf;
register int ctlr = ss->sc_ctlr;
register int unit = ss->sc_unit;
u_int nblk = size >> ss->sc_blkshift;
daddr_t blk;
char stat;
if (size == 0)
return(0);
/*
* Don't do partition translation on the `raw partition'.
*/
blk = (dblk + ((ss->sc_part == RAW_PART) ? 0 :
ss->sc_pinfo.offset[ss->sc_part])) >> ss->sc_blkshift;
ss->sc_retry = 0;
#ifdef SD_DEBUG
if (debug)
printf("sdstrategy(%d,%d): size=%d blk=%d nblk=%d\n",
ctlr, unit, size, blk, nblk);
#endif
retry:
if (func == F_READ)
stat = scsi_tt_read(ctlr, unit, buf, size, blk, nblk);
else
stat = scsi_tt_write(ctlr, unit, buf, size, blk, nblk);
if (stat) {
printf("sd(%d,%d,%d): block=%x, error=0x%x\n",
ctlr, unit, ss->sc_part, blk, stat);
if (++ss->sc_retry > SDRETRY)
return(EIO);
goto retry;
}
*rsize = size;
return(0);
}
|
