| 1 |
/*
|
| 2 |
* This file has been modified for the cdrkit suite.
|
| 3 |
*
|
| 4 |
* The behaviour and appearence of the program code below can differ to a major
|
| 5 |
* extent from the version distributed by the original author(s).
|
| 6 |
*
|
| 7 |
* For details, see Changelog file distributed with the cdrkit package. If you
|
| 8 |
* received this file from another source then ask the distributing person for
|
| 9 |
* a log of modifications.
|
| 10 |
*
|
| 11 |
*/
|
| 12 |
|
| 13 |
/* @(#)scsi-osf.c 1.26 04/01/15 Copyright 1998 J. Schilling */
|
| 14 |
#ifndef lint
|
| 15 |
static char __sccsid[] =
|
| 16 |
"@(#)scsi-osf.c 1.26 04/01/15 Copyright 1998 J. Schilling";
|
| 17 |
#endif
|
| 18 |
/*
|
| 19 |
* Interface for Digital UNIX (OSF/1 generic SCSI implementation (/dev/cam).
|
| 20 |
*
|
| 21 |
* Created out of the hacks from:
|
| 22 |
* Stefan Traby <stefan@sime.com> and
|
| 23 |
* Bruno Achauer <bruno@tk.uni-linz.ac.at>
|
| 24 |
*
|
| 25 |
* Warning: you may change this source, but if you do that
|
| 26 |
* you need to change the _scg_version and _scg_auth* string below.
|
| 27 |
* You may not return "schily" for an SCG_AUTHOR request anymore.
|
| 28 |
* Choose your name instead of "schily" and make clear that the version
|
| 29 |
* string is related to a modified source.
|
| 30 |
*
|
| 31 |
* Copyright (c) 1998 J. Schilling
|
| 32 |
*/
|
| 33 |
/*
|
| 34 |
* This program is free software; you can redistribute it and/or modify
|
| 35 |
* it under the terms of the GNU General Public License version 2
|
| 36 |
* as published by the Free Software Foundation.
|
| 37 |
*
|
| 38 |
* This program is distributed in the hope that it will be useful,
|
| 39 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 40 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 41 |
* GNU General Public License for more details.
|
| 42 |
*
|
| 43 |
* You should have received a copy of the GNU General Public License along with
|
| 44 |
* this program; see the file COPYING. If not, write to the Free Software
|
| 45 |
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
| 46 |
*/
|
| 47 |
|
| 48 |
#include <sys/types.h>
|
| 49 |
#include <io/common/iotypes.h>
|
| 50 |
#include <io/cam/cam.h>
|
| 51 |
#include <io/cam/uagt.h>
|
| 52 |
|
| 53 |
/*
|
| 54 |
* Warning: you may change this source, but if you do that
|
| 55 |
* you need to change the _scg_version and _scg_auth* string below.
|
| 56 |
* You may not return "schily" for an SCG_AUTHOR request anymore.
|
| 57 |
* Choose your name instead of "schily" and make clear that the version
|
| 58 |
* string is related to a modified source.
|
| 59 |
*/
|
| 60 |
LOCAL char _scg_trans_version[] = "scsi-osf.c-1.26"; /* The version for this transport*/
|
| 61 |
|
| 62 |
#define MAX_SCG 16 /* Max # of SCSI controllers */
|
| 63 |
#define MAX_TGT 16
|
| 64 |
#define MAX_LUN 8
|
| 65 |
|
| 66 |
struct scg_local {
|
| 67 |
int scgfile; /* Used for ioctl() */
|
| 68 |
short scgfiles[MAX_SCG][MAX_TGT][MAX_LUN];
|
| 69 |
};
|
| 70 |
#define scglocal(p) ((struct scg_local *)((p)->local))
|
| 71 |
|
| 72 |
LOCAL BOOL scsi_checktgt __PR((SCSI *scgp, int f, int busno, int tgt, int tlun));
|
| 73 |
|
| 74 |
/*
|
| 75 |
* I don't have any documentation about CAM
|
| 76 |
*/
|
| 77 |
#define MAX_DMA_OSF_CAM (64*1024)
|
| 78 |
|
| 79 |
#ifndef AUTO_SENSE_LEN
|
| 80 |
# define AUTO_SENSE_LEN 32 /* SCG_MAX_SENSE */
|
| 81 |
#endif
|
| 82 |
|
| 83 |
/*
|
| 84 |
* Return version information for the low level SCSI transport code.
|
| 85 |
* This has been introduced to make it easier to trace down problems
|
| 86 |
* in applications.
|
| 87 |
*/
|
| 88 |
LOCAL char *
|
| 89 |
scgo_version(scgp, what)
|
| 90 |
SCSI *scgp;
|
| 91 |
int what;
|
| 92 |
{
|
| 93 |
if (scgp != (SCSI *)0) {
|
| 94 |
switch (what) {
|
| 95 |
|
| 96 |
case SCG_VERSION:
|
| 97 |
return (_scg_trans_version);
|
| 98 |
/*
|
| 99 |
* If you changed this source, you are not allowed to
|
| 100 |
* return "schily" for the SCG_AUTHOR request.
|
| 101 |
*/
|
| 102 |
case SCG_AUTHOR:
|
| 103 |
return (_scg_auth_cdrkit);
|
| 104 |
case SCG_SCCS_ID:
|
| 105 |
return (__sccsid);
|
| 106 |
}
|
| 107 |
}
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| 108 |
return ((char *)0);
|
| 109 |
}
|
| 110 |
|
| 111 |
LOCAL int
|
| 112 |
scgo_help(scgp, f)
|
| 113 |
SCSI *scgp;
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| 114 |
FILE *f;
|
| 115 |
{
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| 116 |
__scg_help(f, "CAM", "Generic transport independent SCSI (Common Access Method)",
|
| 117 |
"", "bus,target,lun", "1,2,0", TRUE, FALSE);
|
| 118 |
return (0);
|
| 119 |
}
|
| 120 |
|
| 121 |
LOCAL int
|
| 122 |
scgo_open(scgp, device)
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| 123 |
SCSI *scgp;
|
| 124 |
char *device;
|
| 125 |
{
|
| 126 |
int busno = scg_scsibus(scgp);
|
| 127 |
int tgt = scg_target(scgp);
|
| 128 |
int tlun = scg_lun(scgp);
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| 129 |
register int b;
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| 130 |
register int t;
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| 131 |
register int l;
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| 132 |
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if (busno >= MAX_SCG || tgt >= MAX_TGT || tlun >= MAX_LUN) {
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| 134 |
errno = EINVAL;
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| 135 |
if (scgp->errstr)
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| 136 |
js_snprintf(scgp->errstr, SCSI_ERRSTR_SIZE,
|
| 137 |
"Illegal value for busno, target or lun '%d,%d,%d'",
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| 138 |
busno, tgt, tlun);
|
| 139 |
return (-1);
|
| 140 |
}
|
| 141 |
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if ((device != NULL && *device != '\0') || (busno == -2 && tgt == -2)) {
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| 143 |
errno = EINVAL;
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if (scgp->errstr)
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js_snprintf(scgp->errstr, SCSI_ERRSTR_SIZE,
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"Open by 'devname' not supported on this OS");
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return (-1);
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}
|
| 149 |
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| 150 |
if (scgp->local == NULL) {
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scgp->local = malloc(sizeof (struct scg_local));
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| 152 |
if (scgp->local == NULL)
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| 153 |
return (0);
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scglocal(scgp)->scgfile = -1;
|
| 155 |
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for (b = 0; b < MAX_SCG; b++) {
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for (t = 0; t < MAX_TGT; t++) {
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for (l = 0; l < MAX_LUN; l++)
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scglocal(scgp)->scgfiles[b][t][l] = 0;
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}
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}
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}
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if (scglocal(scgp)->scgfile != -1) /* multiple opens ??? */
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| 165 |
return (1); /* not yet ready .... */
|
| 166 |
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| 167 |
if ((scglocal(scgp)->scgfile = open("/dev/cam", O_RDWR, 0)) < 0) {
|
| 168 |
if (scgp->errstr)
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| 169 |
js_snprintf(scgp->errstr, SCSI_ERRSTR_SIZE,
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"Cannot open '/dev/cam'");
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return (-1);
|
| 172 |
}
|
| 173 |
|
| 174 |
if (busno >= 0 && tgt >= 0 && tlun >= 0) {
|
| 175 |
/* scsi_checktgt() ??? */
|
| 176 |
for (l = 0; l < MAX_LUN; l++)
|
| 177 |
scglocal(scgp)->scgfiles[b][t][l] = 1;
|
| 178 |
return (1);
|
| 179 |
}
|
| 180 |
/*
|
| 181 |
* There seems to be no clean way to check whether
|
| 182 |
* a SCSI bus is present in the current system.
|
| 183 |
* scsi_checktgt() is used as a workaround for this problem.
|
| 184 |
*/
|
| 185 |
for (b = 0; b < MAX_SCG; b++) {
|
| 186 |
for (t = 0; t < MAX_TGT; t++) {
|
| 187 |
if (scsi_checktgt(scgp, scglocal(scgp)->scgfile, b, t, 0)) {
|
| 188 |
for (l = 0; l < MAX_LUN; l++)
|
| 189 |
scglocal(scgp)->scgfiles[b][t][l] = 1;
|
| 190 |
/*
|
| 191 |
* Found a target on this bus.
|
| 192 |
* Comment the 'break' for a complete scan.
|
| 193 |
*/
|
| 194 |
break;
|
| 195 |
}
|
| 196 |
}
|
| 197 |
}
|
| 198 |
return (1);
|
| 199 |
}
|
| 200 |
|
| 201 |
LOCAL int
|
| 202 |
scgo_close(scgp)
|
| 203 |
SCSI *scgp;
|
| 204 |
{
|
| 205 |
if (scgp->local == NULL)
|
| 206 |
return (-1);
|
| 207 |
|
| 208 |
if (scglocal(scgp)->scgfile >= 0)
|
| 209 |
close(scglocal(scgp)->scgfile);
|
| 210 |
scglocal(scgp)->scgfile = -1;
|
| 211 |
return (0);
|
| 212 |
}
|
| 213 |
|
| 214 |
/*
|
| 215 |
* We send a test unit ready command to the target to check whether the
|
| 216 |
* OS is considering this target to be valid.
|
| 217 |
* XXX Is this really needed? We should rather let the cmd fail later.
|
| 218 |
*/
|
| 219 |
LOCAL BOOL
|
| 220 |
scsi_checktgt(scgp, f, busno, tgt, tlun)
|
| 221 |
SCSI *scgp;
|
| 222 |
int f;
|
| 223 |
int busno;
|
| 224 |
int tgt;
|
| 225 |
int tlun;
|
| 226 |
{
|
| 227 |
struct scg_cmd *sp = scgp->scmd;
|
| 228 |
struct scg_cmd sc;
|
| 229 |
int ret;
|
| 230 |
int ofd = scgp->fd;
|
| 231 |
int obus = scg_scsibus(scgp);
|
| 232 |
int otgt = scg_target(scgp);
|
| 233 |
int olun = scg_lun(scgp);
|
| 234 |
|
| 235 |
scg_settarget(scgp, busno, tgt, tlun);
|
| 236 |
scgp->fd = f;
|
| 237 |
|
| 238 |
sc = *sp;
|
| 239 |
fillbytes((caddr_t)sp, sizeof (*sp), '\0');
|
| 240 |
sp->addr = (caddr_t)0;
|
| 241 |
sp->size = 0;
|
| 242 |
sp->flags = SCG_DISRE_ENA | SCG_SILENT;
|
| 243 |
sp->cdb_len = SC_G0_CDBLEN;
|
| 244 |
sp->sense_len = CCS_SENSE_LEN;
|
| 245 |
sp->cdb.g0_cdb.cmd = SC_TEST_UNIT_READY;
|
| 246 |
sp->cdb.g0_cdb.lun = scg_lun(scgp);
|
| 247 |
|
| 248 |
scgo_send(scgp);
|
| 249 |
scg_settarget(scgp, obus, otgt, olun);
|
| 250 |
scgp->fd = ofd;
|
| 251 |
|
| 252 |
if (sp->error != SCG_FATAL)
|
| 253 |
return (TRUE);
|
| 254 |
ret = sp->ux_errno != EINVAL;
|
| 255 |
*sp = sc;
|
| 256 |
return (ret);
|
| 257 |
}
|
| 258 |
|
| 259 |
|
| 260 |
LOCAL long
|
| 261 |
scgo_maxdma(scgp, amt)
|
| 262 |
SCSI *scgp;
|
| 263 |
long amt;
|
| 264 |
{
|
| 265 |
long maxdma = MAX_DMA_OSF_CAM;
|
| 266 |
|
| 267 |
return (maxdma);
|
| 268 |
}
|
| 269 |
|
| 270 |
LOCAL void *
|
| 271 |
scgo_getbuf(scgp, amt)
|
| 272 |
SCSI *scgp;
|
| 273 |
long amt;
|
| 274 |
{
|
| 275 |
if (scgp->debug > 0) {
|
| 276 |
js_fprintf((FILE *)scgp->errfile,
|
| 277 |
"scgo_getbuf: %ld bytes\n", amt);
|
| 278 |
}
|
| 279 |
scgp->bufbase = valloc((size_t)(amt));
|
| 280 |
return (scgp->bufbase);
|
| 281 |
}
|
| 282 |
|
| 283 |
LOCAL void
|
| 284 |
scgo_freebuf(scgp)
|
| 285 |
SCSI *scgp;
|
| 286 |
{
|
| 287 |
if (scgp->bufbase)
|
| 288 |
free(scgp->bufbase);
|
| 289 |
scgp->bufbase = NULL;
|
| 290 |
}
|
| 291 |
|
| 292 |
LOCAL BOOL
|
| 293 |
scgo_havebus(scgp, busno)
|
| 294 |
SCSI *scgp;
|
| 295 |
int busno;
|
| 296 |
{
|
| 297 |
register int t;
|
| 298 |
|
| 299 |
if (busno < 0 || busno >= MAX_SCG)
|
| 300 |
return (FALSE);
|
| 301 |
|
| 302 |
if (scgp->local == NULL)
|
| 303 |
return (FALSE);
|
| 304 |
|
| 305 |
for (t = 0; t < MAX_TGT; t++) {
|
| 306 |
if (scglocal(scgp)->scgfiles[busno][t][0] != 0)
|
| 307 |
return (TRUE);
|
| 308 |
}
|
| 309 |
return (FALSE);
|
| 310 |
}
|
| 311 |
|
| 312 |
|
| 313 |
LOCAL int
|
| 314 |
scgo_fileno(scgp, busno, tgt, tlun)
|
| 315 |
SCSI *scgp;
|
| 316 |
int busno;
|
| 317 |
int tgt;
|
| 318 |
int tlun;
|
| 319 |
{
|
| 320 |
if (scgp->local == NULL)
|
| 321 |
return (-1);
|
| 322 |
|
| 323 |
return ((busno < 0 || busno >= MAX_SCG) ? -1 : scglocal(scgp)->scgfile);
|
| 324 |
}
|
| 325 |
|
| 326 |
LOCAL int
|
| 327 |
scgo_initiator_id(scgp)
|
| 328 |
SCSI *scgp;
|
| 329 |
{
|
| 330 |
return (-1);
|
| 331 |
}
|
| 332 |
|
| 333 |
LOCAL int
|
| 334 |
scgo_isatapi(scgp)
|
| 335 |
SCSI *scgp;
|
| 336 |
{
|
| 337 |
return (FALSE);
|
| 338 |
}
|
| 339 |
|
| 340 |
LOCAL int
|
| 341 |
scgo_reset(scgp, what)
|
| 342 |
SCSI *scgp;
|
| 343 |
int what;
|
| 344 |
{
|
| 345 |
errno = EINVAL;
|
| 346 |
return (-1);
|
| 347 |
}
|
| 348 |
|
| 349 |
LOCAL int
|
| 350 |
scgo_send(scgp)
|
| 351 |
SCSI *scgp;
|
| 352 |
{
|
| 353 |
struct scg_cmd *sp = scgp->scmd;
|
| 354 |
CCB_SCSIIO ccb;
|
| 355 |
UAGT_CAM_CCB ua;
|
| 356 |
unsigned char *cdb;
|
| 357 |
CCB_RELSIM relsim;
|
| 358 |
UAGT_CAM_CCB relua;
|
| 359 |
int i;
|
| 360 |
|
| 361 |
if (scgp->fd < 0) {
|
| 362 |
sp->error = SCG_FATAL;
|
| 363 |
return (0);
|
| 364 |
}
|
| 365 |
|
| 366 |
fillbytes(&ua, sizeof (UAGT_CAM_CCB), 0);
|
| 367 |
fillbytes(&ccb, sizeof (CCB_SCSIIO), 0);
|
| 368 |
|
| 369 |
ua.uagt_ccb = (CCB_HEADER *) &ccb;
|
| 370 |
ua.uagt_ccblen = sizeof (CCB_SCSIIO);
|
| 371 |
ccb.cam_ch.my_addr = (CCB_HEADER *) &ccb;
|
| 372 |
ccb.cam_ch.cam_ccb_len = sizeof (CCB_SCSIIO);
|
| 373 |
|
| 374 |
ua.uagt_snsbuf = ccb.cam_sense_ptr = sp->u_sense.cmd_sense;
|
| 375 |
ua.uagt_snslen = ccb.cam_sense_len = AUTO_SENSE_LEN;
|
| 376 |
|
| 377 |
cdb = (unsigned char *) ccb.cam_cdb_io.cam_cdb_bytes;
|
| 378 |
|
| 379 |
ccb.cam_timeout = sp->timeout;
|
| 380 |
|
| 381 |
ccb.cam_data_ptr = ua.uagt_buffer = (Uchar *) sp->addr;
|
| 382 |
ccb.cam_dxfer_len = ua.uagt_buflen = sp->size;
|
| 383 |
ccb.cam_ch.cam_func_code = XPT_SCSI_IO;
|
| 384 |
ccb.cam_ch.cam_flags = 0; /* CAM_DIS_CALLBACK; */
|
| 385 |
|
| 386 |
if (sp->size == 0) {
|
| 387 |
ccb.cam_data_ptr = ua.uagt_buffer = (Uchar *) NULL;
|
| 388 |
ccb.cam_ch.cam_flags |= CAM_DIR_NONE;
|
| 389 |
} else {
|
| 390 |
if (sp->flags & SCG_RECV_DATA) {
|
| 391 |
ccb.cam_ch.cam_flags |= CAM_DIR_IN;
|
| 392 |
} else {
|
| 393 |
ccb.cam_ch.cam_flags |= CAM_DIR_OUT;
|
| 394 |
}
|
| 395 |
}
|
| 396 |
|
| 397 |
ccb.cam_cdb_len = sp->cdb_len;
|
| 398 |
for (i = 0; i < sp->cdb_len; i++)
|
| 399 |
cdb[i] = sp->cdb.cmd_cdb[i];
|
| 400 |
|
| 401 |
ccb.cam_ch.cam_path_id = scg_scsibus(scgp);
|
| 402 |
ccb.cam_ch.cam_target_id = scg_target(scgp);
|
| 403 |
ccb.cam_ch.cam_target_lun = scg_lun(scgp);
|
| 404 |
|
| 405 |
sp->sense_count = 0;
|
| 406 |
sp->ux_errno = 0;
|
| 407 |
sp->error = SCG_NO_ERROR;
|
| 408 |
|
| 409 |
|
| 410 |
if (ioctl(scgp->fd, UAGT_CAM_IO, (caddr_t) &ua) < 0) {
|
| 411 |
sp->ux_errno = geterrno();
|
| 412 |
sp->error = SCG_FATAL;
|
| 413 |
if (scgp->debug > 0) {
|
| 414 |
errmsg("ioctl(fd, UAGT_CAM_IO, dev=%d,%d,%d) failed.\n",
|
| 415 |
scg_scsibus(scgp), scg_target(scgp), scg_lun(scgp));
|
| 416 |
}
|
| 417 |
return (0);
|
| 418 |
}
|
| 419 |
if (scgp->debug > 0) {
|
| 420 |
errmsgno(EX_BAD, "cam_status = 0x%.2X scsi_status = 0x%.2X dev=%d,%d,%d\n",
|
| 421 |
ccb.cam_ch.cam_status,
|
| 422 |
ccb.cam_scsi_status,
|
| 423 |
scg_scsibus(scgp), scg_target(scgp), scg_lun(scgp));
|
| 424 |
fflush(stderr);
|
| 425 |
}
|
| 426 |
switch (ccb.cam_ch.cam_status & CAM_STATUS_MASK) {
|
| 427 |
|
| 428 |
case CAM_REQ_CMP: break;
|
| 429 |
|
| 430 |
case CAM_SEL_TIMEOUT: sp->error = SCG_FATAL;
|
| 431 |
sp->ux_errno = EIO;
|
| 432 |
break;
|
| 433 |
|
| 434 |
case CAM_CMD_TIMEOUT: sp->error = SCG_TIMEOUT;
|
| 435 |
sp->ux_errno = EIO;
|
| 436 |
break;
|
| 437 |
|
| 438 |
default: sp->error = SCG_RETRYABLE;
|
| 439 |
sp->ux_errno = EIO;
|
| 440 |
break;
|
| 441 |
}
|
| 442 |
|
| 443 |
sp->u_scb.cmd_scb[0] = ccb.cam_scsi_status;
|
| 444 |
|
| 445 |
if (ccb.cam_ch.cam_status & CAM_AUTOSNS_VALID) {
|
| 446 |
sp->sense_count = MIN(ccb.cam_sense_len - ccb.cam_sense_resid,
|
| 447 |
SCG_MAX_SENSE);
|
| 448 |
sp->sense_count = MIN(sp->sense_count, sp->sense_len);
|
| 449 |
if (sp->sense_len < 0)
|
| 450 |
sp->sense_count = 0;
|
| 451 |
}
|
| 452 |
sp->resid = ccb.cam_resid;
|
| 453 |
|
| 454 |
|
| 455 |
/*
|
| 456 |
* this is perfectly wrong.
|
| 457 |
* But without this, we hang...
|
| 458 |
*/
|
| 459 |
if (ccb.cam_ch.cam_status & CAM_SIM_QFRZN) {
|
| 460 |
fillbytes(&relsim, sizeof (CCB_RELSIM), 0);
|
| 461 |
relsim.cam_ch.cam_ccb_len = sizeof (CCB_SCSIIO);
|
| 462 |
relsim.cam_ch.cam_func_code = XPT_REL_SIMQ;
|
| 463 |
relsim.cam_ch.cam_flags = CAM_DIR_IN | CAM_DIS_CALLBACK;
|
| 464 |
relsim.cam_ch.cam_path_id = scg_scsibus(scgp);
|
| 465 |
relsim.cam_ch.cam_target_id = scg_target(scgp);
|
| 466 |
relsim.cam_ch.cam_target_lun = scg_lun(scgp);
|
| 467 |
|
| 468 |
relua.uagt_ccb = (struct ccb_header *) & relsim; /* wrong cast */
|
| 469 |
relua.uagt_ccblen = sizeof (relsim);
|
| 470 |
relua.uagt_buffer = NULL;
|
| 471 |
relua.uagt_buflen = 0;
|
| 472 |
|
| 473 |
if (ioctl(scgp->fd, UAGT_CAM_IO, (caddr_t) & relua) < 0)
|
| 474 |
errmsg("DEC CAM -> LMA\n");
|
| 475 |
}
|
| 476 |
return (0);
|
| 477 |
}
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