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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562
|
/*
* This file has been modified for the cdrkit suite.
*
* The behaviour and appearence of the program code below can differ to a major
* extent from the version distributed by the original author(s).
*
* For details, see Changelog file distributed with the cdrkit package. If you
* received this file from another source then ask the distributing person for
* a log of modifications.
*
*/
/* @(#)scsi-dos.c 1.11 03/12/10 Copyright 1998-2003 J. Schilling, 2003 Alex Kopylov reanimatolog@yandex.ru */
/*
* Interface for the MS-DOS ASPI managers.
* You need ASPI manager installed in your config.sys:
* aspi*.sys for SCSI devices
* oakaspi.sys for ATAPI devices
* usbaspi.sys for USB devices
*
* Made from Win32 ASPI library template.
*
* Warning: you may change this source, but if you do that
* you need to change the _usal_version and _usal_auth* string below.
* You may not return "schily" for an SCG_AUTHOR request anymore.
* Choose your name instead of "schily" and make clear that the version
* string is related to a modified source.
*
* Copyright (c) 1998-2003 J. Schilling
* Copyright (c) 1999 A.L. Faber for the first implementation
* of this interface.
* Copyright (c) 2003 Alex Kopylov reanimatolog@yandex.ru
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; see the file COPYING. If not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <dos.h>
#include <dpmi.h>
#include <go32.h>
#include <usal/aspi-dos.h>
/*
* Warning: you may change this source, but if you do that
* you need to change the _usal_version and _usal_auth* string below.
* You may not return "schily" for an SCG_AUTHOR request anymore.
* Choose your name instead of "schily" and make clear that the version
* string is related to a modified source.
*/
static char _usal_trans_version[] = "scsi-dos.c-1.11"; /* The version for this transport*/
#define MAX_SCG 8
#define MAX_TGT 8
#define MAX_LUN 8
struct usal_local {
int dummy;
};
#define usallocal(p) ((struct usal_local *)((p)->local))
#define MAX_DMA_DOS (63L*1024L)
static BYTE busses = 1;
static DWORD SCSIMgrEntry = 0;
static int AspiLoaded = 0;
static BOOL _callback_flag;
static _go32_dpmi_seginfo _callback_info;
static _go32_dpmi_registers _callback_regs;
static BOOL SCSIMgrOpen(SCSI *);
static void SCSIMgrClose(void);
static int SCSIMgrSendSRB(SRB *, time_t);
static void SCSIMgrCallBack(_go32_dpmi_registers *regs);
static char *
usalo_version(SCSI *usalp, int what)
{
if (usalp != (SCSI *)0) {
switch (what) {
case SCG_VERSION:
return (_usal_trans_version);
case SCG_AUTHOR:
return (_usal_auth_cdrkit);
case SCG_SCCS_ID:
return (__sccsid);
}
}
return ((char *)0);
}
static int
usalo_help(SCSI *usalp, FILE *f)
{
__usal_help(f, "ASPI", "Generic transport independent SCSI",
"", "bus,target,lun", "1,2,0", TRUE, FALSE);
return (0);
}
static int
usalo_open(SCSI *usalp, char *device)
{
int busno = usal_scsibus(usalp);
int tgt = usal_target(usalp);
int tlun = usal_lun(usalp);
if (busno >= MAX_SCG || tgt >= MAX_TGT || tlun >= MAX_LUN) {
errno = EINVAL;
if (usalp->errstr)
snprintf(usalp->errstr, SCSI_ERRSTR_SIZE,
"Illegal value for busno, target or lun '%d,%d,%d'",
busno, tgt, tlun);
return (-1);
}
if ((device != NULL && *device != '\0') || (busno == -2 && tgt == -2)) {
errno = EINVAL;
if (usalp->errstr)
snprintf(usalp->errstr, SCSI_ERRSTR_SIZE,
"Open by 'devname' not supported on this OS");
return (-1);
}
/*
* Check if variables are within the range
*/
if (tgt >= 0 && tgt >= 0 && tlun >= 0) {
/*
* This is the non -scanbus case.
*/
;
} else if (tgt != -1 || tgt != -1 || tlun != -1) {
errno = EINVAL;
return (-1);
}
if (usalp->local == NULL) {
usalp->local = malloc(sizeof (struct usal_local));
if (usalp->local == NULL)
return (0);
}
/*
* Try to open ASPI-Router
*/
if (!SCSIMgrOpen(usalp))
return (-1);
/*
* More than we have ...
*/
if (busno >= busses) {
SCSIMgrClose();
return (-1);
}
/*
* Install Exit Function which closes the ASPI-Router
*/
atexit(SCSIMgrClose);
/*
* Success after all
*/
return (1);
}
static int
usalo_close(SCSI *usalp)
{
SCSIMgrClose();
return (0);
}
static long
usalo_maxdma(SCSI *usalp, long amt)
{
return (MAX_DMA_DOS);
}
static void *
usalo_getbuf(SCSI *usalp, long amt)
{
if (usalp->debug > 0) {
fprintf((FILE *)usalp->errfile,
"usalo_getbuf: %ld bytes\n", amt);
}
usalp->bufbase = malloc((size_t)(amt));
return (usalp->bufbase);
}
static void
usalo_freebuf(SCSI *usalp)
{
if (usalp->bufbase)
free(usalp->bufbase);
usalp->bufbase = NULL;
}
static __SBOOL
usalo_havebus(SCSI *usalp, int busno)
{
if (busno < 0 || busno >= busses)
return (FALSE);
return (TRUE);
}
static int
usalo_fileno(SCSI *usalp, int busno, int tgt, int tlun)
{
if (busno < 0 || busno >= busses ||
tgt < 0 || tgt >= MAX_TGT ||
tlun < 0 || tlun >= MAX_LUN)
return (-1);
/*
* Return fake
*/
return (1);
}
static int
usalo_initiator_id(SCSI *usalp)
{
return (-1);
}
static int
usalo_isatapi(SCSI *usalp)
{
return (-1);
}
static int
usalo_reset(SCSI *usalp, int what)
{
errno = EINVAL;
return (-1);
}
static int
usalo_send(SCSI *usalp)
{
struct usal_cmd *sp = usalp->scmd;
SRB Srb;
int dos_memory_data_seg;
int dos_memory_data_sel;
DWORD dos_memory_data_ptr;
/*
* Check if ASPI library is loaded
*/
if (!SCSIMgrEntry) {
errmsgno(EX_BAD, "error in usalo_send: ASPI driver not loaded.\n");
sp->error = SCG_FATAL;
return (-1);
}
if (usalp->fd < 0) {
sp->error = SCG_FATAL;
return (0);
}
/*
* Initialize variables
*/
sp->error = SCG_NO_ERROR;
sp->sense_count = 0;
sp->u_scb.cmd_scb[0] = 0;
sp->resid = 0;
memset(&Srb, 0, sizeof (Srb));
switch (sp->cdb_len) {
case 6:
movebytes(&sp->cdb, &(Srb.Type.ExecSCSICmd.CmdLen._6.CDBByte), sp->cdb_len);
break;
case 10:
movebytes(&sp->cdb, &(Srb.Type.ExecSCSICmd.CmdLen._10.CDBByte), sp->cdb_len);
break;
case 12:
movebytes(&sp->cdb, &(Srb.Type.ExecSCSICmd.CmdLen._12.CDBByte), sp->cdb_len);
break;
default:
sp->error = SCG_FATAL;
sp->ux_errno = EINVAL;
fprintf((FILE *)usalp->errfile,
"Unsupported sp->cdb_len: %u. Fatal error in usalo_send, exiting...\n", sp->cdb_len);
return (-1);
}
if ((dos_memory_data_seg = __dpmi_allocate_dos_memory((sp->size>>4)+1, &dos_memory_data_sel)) == -1) {
sp->error = SCG_FATAL;
return (-1);
}
dos_memory_data_ptr = dos_memory_data_seg<<16;
_dosmemputb(sp->addr, sp->size, dos_memory_data_seg<<4);
Srb.Cmd = SC_EXEC_SCSI_CMD;
Srb.HaId = usal_scsibus(usalp);
Srb.Type.ExecSCSICmd.Target = usal_target(usalp);
Srb.Type.ExecSCSICmd.Lun = usal_lun(usalp);
Srb.Type.ExecSCSICmd.BufLen = sp->size;
Srb.Type.ExecSCSICmd.BufPointer = (void *)dos_memory_data_ptr;
Srb.Type.ExecSCSICmd.CDBLen = sp->cdb_len;
if (sp->sense_len <= (SENSE_LEN+2))
Srb.Type.ExecSCSICmd.SenseLen = sp->sense_len;
else
Srb.Type.ExecSCSICmd.SenseLen = (SENSE_LEN+2);
/*
* Enable SCSIMgrCallBack()
*/
Srb.Flags |= SRB_POSTING;
Srb.Type.ExecSCSICmd.PostProc = (void *)(_callback_info.rm_offset|(_callback_info.rm_segment<<16));
/*
* Do we receive data from this ASPI command?
*/
if (sp->flags & SCG_RECV_DATA) {
Srb.Flags |= SRB_DIR_IN;
} else {
/*
* Set direction to output
*/
if (sp->size > 0) {
Srb.Flags |= SRB_DIR_OUT;
}
}
SCSIMgrSendSRB(&Srb, usalp->scmd->timeout);
Srb.Type.ExecSCSICmd.BufPointer = sp->addr;
_dosmemgetb(dos_memory_data_seg<<4, sp->size, sp->addr);
__dpmi_free_dos_memory(dos_memory_data_sel);
if (Srb.Status == SS_PENDING) { /* Check if we got a timeout*/
if (usalp->debug > 0) {
fprintf((FILE *)usalp->errfile,
"Timeout....\n");
}
sp->error = SCG_TIMEOUT;
return (1); /* Return error */
}
/*
* Check ASPI command status
*/
if (Srb.Status != SS_COMP) {
if (usalp->debug > 0) {
fprintf((FILE *)usalp->errfile,
"Error in usalo_send: Srb.Status is 0x%x\n", Srb.Status);
}
switch (Srb.Status) {
case SS_COMP: /* 0x01 SRB completed without error */
sp->error = SCG_NO_ERROR;
sp->ux_errno = 0;
break;
case SS_PENDING: /* 0x00 SRB being processed */
case SS_ABORTED: /* 0x02 SRB aborted */
case SS_ABORT_FAIL: /* 0x03 Unable to abort SRB */
default:
sp->error = SCG_RETRYABLE;
sp->ux_errno = EIO;
break;
case SS_ERR: /* 0x04 SRB completed with error */
/*
* If the SCSI Status byte is != 0, we definitely could send
* the command to the target. We signal NO transport error.
*/
sp->error = SCG_NO_ERROR;
sp->ux_errno = EIO;
if (Srb.Type.ExecSCSICmd.TargStat)
break;
case SS_INVALID_CMD: /* 0x80 Invalid ASPI command */
case SS_INVALID_HA: /* 0x81 Invalid host adapter number */
case SS_NO_DEVICE: /* 0x82 SCSI device not installed */
sp->error = SCG_FATAL;
sp->ux_errno = EINVAL;
break;
}
sp->sense_count = Srb.Type.ExecSCSICmd.SenseLen;
if (sp->sense_count > sp->sense_len)
sp->sense_count = sp->sense_len;
memset(&sp->u_sense.Sense, 0x00, sizeof (sp->u_sense.Sense));
switch (sp->cdb_len) {
case 6:
memcpy(&sp->u_sense.Sense, Srb.Type.ExecSCSICmd.CmdLen._6.SenseArea, sp->sense_count);
break;
case 10:
memcpy(&sp->u_sense.Sense, Srb.Type.ExecSCSICmd.CmdLen._10.SenseArea, sp->sense_count);
break;
case 12:
memcpy(&sp->u_sense.Sense, Srb.Type.ExecSCSICmd.CmdLen._12.SenseArea, sp->sense_count);
break;
}
sp->u_scb.cmd_scb[0] = Srb.Type.ExecSCSICmd.TargStat;
if (usalp->debug > 0) {
fprintf((FILE *)usalp->errfile,
"Mapped to: error %d errno: %d\n", sp->error, sp->ux_errno);
}
return (1);
}
return (0);
}
static BOOL
SCSIMgrOpen(SCSI *usalp)
{
int hSCSIMgr;
int dos_memory_seg;
int dos_memory_sel;
__dpmi_regs _regs;
SRB Srb;
if (SCSIMgrEntry) {
AspiLoaded++;
return (TRUE);
}
/*
* Open "SCSIMRG$"
*/
if (!_dos_open("SCSIMGR$", 0, &hSCSIMgr)) {
/* Alloc 16 bytes DOS memory */
if ((dos_memory_seg = __dpmi_allocate_dos_memory(1, &dos_memory_sel)) != -1) {
/* Look for SCSIMgr entry point */
memset(&_regs, 0, sizeof (_regs));
_regs.x.ax = 0x4402;
_regs.x.bx = hSCSIMgr;
_regs.x.cx = 0x0004;
_regs.x.ds = dos_memory_seg;
_regs.x.dx = 0x0000;
if (!__dpmi_simulate_real_mode_interrupt(0x21, &_regs)) {
_dosmemgetb(dos_memory_seg<<4, 4, &SCSIMgrEntry);
}
/* Free DOS memory */
__dpmi_free_dos_memory(dos_memory_sel);
}
/* Close "SCSIMRG$" */
_dos_close(hSCSIMgr);
/* Allocate real mode callback */
_callback_info.pm_offset = (unsigned long)&SCSIMgrCallBack;
if (_go32_dpmi_allocate_real_mode_callback_retf(&_callback_info, &_callback_regs) == -1) {
fprintf((FILE *)usalp->errfile, "Cannot allocate callback address!\n");
SCSIMgrEntry = 0;
}
}
/* SCSIMgr entry point founded? */
if (!SCSIMgrEntry) {
fprintf((FILE *)usalp->errfile, "Cannot open ASPI manager! Try to get one from http://bootcd.narod.ru/\n");
return (FALSE);
}
memset(&Srb, 0, sizeof (Srb));
Srb.Cmd = SC_HA_INQUIRY;
SCSIMgrSendSRB(&Srb, 10);
if (usalp->debug) {
fprintf((FILE *)usalp->errfile, "Status : %ld\n", Srb.Status);
fprintf((FILE *)usalp->errfile, "hacount: %d\n", Srb.Type.HAInquiry.Count);
fprintf((FILE *)usalp->errfile, "SCSI id: %d\n", Srb.Type.HAInquiry.SCSI_ID);
fprintf((FILE *)usalp->errfile, "Manager: '%.16s'\n", Srb.Type.HAInquiry.ManagerId);
fprintf((FILE *)usalp->errfile, "Identif: '%.16s'\n", Srb.Type.HAInquiry.Identifier);
usal_prbytes("Unique:", Srb.Type.HAInquiry.Unique, 16);
}
AspiLoaded++;
return (TRUE);
}
static void
SCSIMgrClose()
{
if (--AspiLoaded > 0)
return;
if (SCSIMgrEntry) {
_go32_dpmi_free_real_mode_callback(&_callback_info);
SCSIMgrEntry = 0;
}
}
static int
SCSIMgrSendSRB(SRB *Srb, time_t timeout)
{
int dos_memory_srb_seg;
int dos_memory_srb_sel;
DWORD dos_memory_srb_ptr;
struct timeval st;
struct timeval cr;
__dpmi_regs _regs;
/* Alloc DOS memory */
if ((dos_memory_srb_seg = __dpmi_allocate_dos_memory((sizeof (SRB) >> 4) + 1, &dos_memory_srb_sel)) == -1) {
Srb->Status = SS_NO_DEVICE; /* ??? fatal error */
return (Srb->Status);
}
dos_memory_srb_ptr = dos_memory_srb_seg<<16;
/* Copy SRB to DOS memory */
_dosmemputb((void *)Srb, sizeof (SRB), dos_memory_srb_seg<<4);
/* Reset callback flag */
_callback_flag = 0;
/* Call SCSIMgr */
memset(&_regs, 0, sizeof (_regs));
_regs.x.ip = SCSIMgrEntry & 0xffff;
_regs.x.cs = SCSIMgrEntry >> 16;
__dpmi_simulate_real_mode_procedure_retf_stack(&_regs, 2, &dos_memory_srb_ptr);
/* Wait 'timeout' seconds for Srb->Status != SS_PENDING */
gettimeofday(&st, NULL);
do {
_dosmemgetb(dos_memory_srb_seg << 4, sizeof (SRB), (void *)Srb);
gettimeofday(&cr, NULL);
} while ((Srb->Status == SS_PENDING) && (cr.tv_sec - st.tv_sec < timeout));
/* Free DOS memory */
__dpmi_free_dos_memory(dos_memory_srb_sel);
return (Srb->Status);
}
static void
SCSIMgrCallBack(_go32_dpmi_registers *regs)
{
_callback_flag = 1;
}
|