drivers/scsi/aha152x.c

   1 /* aha152x.c -- Adaptec AHA-152x driver
   2  * Author: Jürgen E. Fischer, fischer@norbit.de
   3  * Copyright 1993-2004 Jürgen E. Fischer
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; either version 2, or (at your option) any
   8  * later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  *
  16  * $Id: aha152x.c,v 2.7 2004/01/24 11:42:59 fischer Exp $
  17  *
  18  * $Log: aha152x.c,v $
  19  * Revision 2.7  2004/01/24 11:42:59  fischer
  20  * - gather code that is not used by PCMCIA at the end
  21  * - move request_region for !PCMCIA case to detection
  22  * - migration to new scsi host api (remove legacy code)
  23  * - free host scribble before scsi_done
  24  * - fix error handling
  25  * - one isapnp device added to id_table
  26  *
  27  * Revision 2.6  2003/10/30 20:52:47  fischer
  28  * - interfaces changes for kernel 2.6
  29  * - aha152x_probe_one introduced for pcmcia stub
  30  * - fixed pnpdev handling
  31  * - instead of allocation a new one, reuse command for request sense after check condition and reset
  32  * - fixes race in is_complete
  33  *
  34  * Revision 2.5  2002/04/14 11:24:53  fischer
  35  * - isapnp support
  36  * - abort fixed
  37  * - 2.5 support
  38  *
  39  * Revision 2.4  2000/12/16 12:53:56  fischer
  40  * - allow REQUEST SENSE to be queued
  41  * - handle shared PCI interrupts
  42  *
  43  * Revision 2.3  2000/11/04 16:40:26  fischer
  44  * - handle data overruns
  45  * - extend timeout for data phases
  46  *
  47  * Revision 2.2  2000/08/08 19:54:53  fischer
  48  * - minor changes
  49  *
  50  * Revision 2.1  2000/05/17 16:23:17  fischer
  51  * - signature update
  52  * - fix for data out w/o scatter gather
  53  *
  54  * Revision 2.0  1999/12/25 15:07:32  fischer
  55  * - interrupt routine completly reworked
  56  * - basic support for new eh code
  57  *
  58  * Revision 1.21  1999/11/10 23:46:36  fischer
  59  * - default to synchronous operation
  60  * - synchronous negotiation fixed
  61  * - added timeout to loops
  62  * - debugging output can be controlled through procfs
  63  *
  64  * Revision 1.20  1999/11/07 18:37:31  fischer
  65  * - synchronous operation works
  66  * - resid support for sg driver
  67  *
  68  * Revision 1.19  1999/11/02 22:39:59  fischer
  69  * - moved leading comments to README.aha152x
  70  * - new additional module parameters
  71  * - updates for 2.3
  72  * - support for the Tripace TC1550 controller
  73  * - interrupt handling changed
  74  *
  75  * Revision 1.18  1996/09/07 20:10:40  fischer
  76  * - fixed can_queue handling (multiple outstanding commands working again)
  77  *
  78  * Revision 1.17  1996/08/17 16:05:14  fischer
  79  * - biosparam improved
  80  * - interrupt verification
  81  * - updated documentation
  82  * - cleanups
  83  *
  84  * Revision 1.16  1996/06/09 00:04:56  root
  85  * - added configuration symbols for insmod (aha152x/aha152x1)
  86  *
  87  * Revision 1.15  1996/04/30 14:52:06  fischer
  88  * - proc info fixed
  89  * - support for extended translation for >1GB disks
  90  *
  91  * Revision 1.14  1996/01/17  15:11:20  fischer
  92  * - fixed lockup in MESSAGE IN phase after reconnection
  93  *
  94  * Revision 1.13  1996/01/09  02:15:53  fischer
  95  * - some cleanups
  96  * - moved request_irq behind controller initialization
  97  *   (to avoid spurious interrupts)
  98  *
  99  * Revision 1.12  1995/12/16  12:26:07  fischer
 100  * - barrier()s added
 101  * - configurable RESET delay added
 102  *
 103  * Revision 1.11  1995/12/06  21:18:35  fischer
 104  * - some minor updates
 105  *
 106  * Revision 1.10  1995/07/22  19:18:45  fischer
 107  * - support for 2 controllers
 108  * - started synchronous data transfers (not working yet)
 109  *
 110  * Revision 1.9  1995/03/18  09:20:24  root
 111  * - patches for PCMCIA and modules
 112  *
 113  * Revision 1.8  1995/01/21  22:07:19  root
 114  * - snarf_region => request_region
 115  * - aha152x_intr interface change
 116  *
 117  * Revision 1.7  1995/01/02  23:19:36  root
 118  * - updated COMMAND_SIZE to cmd_len
 119  * - changed sti() to restore_flags()
 120  * - fixed some #ifdef which generated warnings
 121  *
 122  * Revision 1.6  1994/11/24  20:35:27  root
 123  * - problem with odd number of bytes in fifo fixed
 124  *
 125  * Revision 1.5  1994/10/30  14:39:56  root
 126  * - abort code fixed
 127  * - debugging improved
 128  *
 129  * Revision 1.4  1994/09/12  11:33:01  root
 130  * - irqaction to request_irq
 131  * - abortion updated
 132  *
 133  * Revision 1.3  1994/08/04  13:53:05  root
 134  * - updates for mid-level-driver changes
 135  * - accept unexpected BUSFREE phase as error condition
 136  * - parity check now configurable
 137  *
 138  * Revision 1.2  1994/07/03  12:56:36  root
 139  * - cleaned up debugging code
 140  * - more tweaking on reset delays
 141  * - updated abort/reset code (pretty untested...)
 142  *
 143  * Revision 1.1  1994/05/28  21:18:49  root
 144  * - update for mid-level interface change (abort-reset)
 145  * - delays after resets adjusted for some slow devices
 146  *
 147  * Revision 1.0  1994/03/25  12:52:00  root
 148  * - Fixed "more data than expected" problem
 149  * - added new BIOS signatures
 150  *
 151  * Revision 0.102  1994/01/31  20:44:12  root
 152  * - minor changes in insw/outsw handling
 153  *
 154  * Revision 0.101  1993/12/13  01:16:27  root
 155  * - fixed STATUS phase (non-GOOD stati were dropped sometimes;
 156  *   fixes problems with CD-ROM sector size detection & media change)
 157  *
 158  * Revision 0.100  1993/12/10  16:58:47  root
 159  * - fix for unsuccessful selections in case of non-continuous id assignments
 160  *   on the scsi bus.
 161  *
 162  * Revision 0.99  1993/10/24  16:19:59  root
 163  * - fixed DATA IN (rare read errors gone)
 164  *
 165  * Revision 0.98  1993/10/17  12:54:44  root
 166  * - fixed some recent fixes (shame on me)
 167  * - moved initialization of scratch area to aha152x_queue
 168  *
 169  * Revision 0.97  1993/10/09  18:53:53  root
 170  * - DATA IN fixed. Rarely left data in the fifo.
 171  *
 172  * Revision 0.96  1993/10/03  00:53:59  root
 173  * - minor changes on DATA IN
 174  *
 175  * Revision 0.95  1993/09/24  10:36:01  root
 176  * - change handling of MSGI after reselection
 177  * - fixed sti/cli
 178  * - minor changes
 179  *
 180  * Revision 0.94  1993/09/18  14:08:22  root
 181  * - fixed bug in multiple outstanding command code
 182  * - changed detection
 183  * - support for kernel command line configuration
 184  * - reset corrected
 185  * - changed message handling
 186  *
 187  * Revision 0.93  1993/09/15  20:41:19  root
 188  * - fixed bugs with multiple outstanding commands
 189  *
 190  * Revision 0.92  1993/09/13  02:46:33  root
 191  * - multiple outstanding commands work (no problems with IBM drive)
 192  *
 193  * Revision 0.91  1993/09/12  20:51:46  root
 194  * added multiple outstanding commands
 195  * (some problem with this $%&? IBM device remain)
 196  *
 197  * Revision 0.9  1993/09/12  11:11:22  root
 198  * - corrected auto-configuration
 199  * - changed the auto-configuration (added some '#define's)
 200  * - added support for dis-/reconnection
 201  *
 202  * Revision 0.8  1993/09/06  23:09:39  root
 203  * - added support for the drive activity light
 204  * - minor changes
 205  *
 206  * Revision 0.7  1993/09/05  14:30:15  root
 207  * - improved phase detection
 208  * - now using the new snarf_region code of 0.99pl13
 209  *
 210  * Revision 0.6  1993/09/02  11:01:38  root
 211  * first public release; added some signatures and biosparam()
 212  *
 213  * Revision 0.5  1993/08/30  10:23:30  root
 214  * fixed timing problems with my IBM drive
 215  *
 216  * Revision 0.4  1993/08/29  14:06:52  root
 217  * fixed some problems with timeouts due incomplete commands
 218  *
 219  * Revision 0.3  1993/08/28  15:55:03  root
 220  * writing data works too.  mounted and worked on a dos partition
 221  *
 222  * Revision 0.2  1993/08/27  22:42:07  root
 223  * reading data works.  Mounted a msdos partition.
 224  *
 225  * Revision 0.1  1993/08/25  13:38:30  root
 226  * first "damn thing doesn't work" version
 227  *
 228  * Revision 0.0  1993/08/14  19:54:25  root
 229  * empty function bodies; detect() works.
 230  *
 231  *
 232  **************************************************************************
 233
 234  see Documentation/scsi/aha152x.txt for configuration details
 235
 236  **************************************************************************/
 237
 238 #include <linux/module.h>
 239 #include <linux/sched.h>
 240 #include <asm/irq.h>
 241 #include <asm/io.h>
 242 #include <linux/blkdev.h>
 243 #include <asm/system.h>
 244 #include <linux/errno.h>
 245 #include <linux/string.h>
 246 #include <linux/wait.h>
 247 #include <linux/ioport.h>
 248 #include <linux/delay.h>
 249 #include <linux/proc_fs.h>
 250 #include <linux/interrupt.h>
 251 #include <linux/init.h>
 252 #include <linux/kernel.h>
 253 #include <linux/isapnp.h>
 254 #include <linux/spinlock.h>
 255 #include <linux/workqueue.h>
 256 #include <asm/semaphore.h>
 257 #include <scsi/scsicam.h>
 258
 259 #include "scsi.h"
 260 #include <scsi/scsi_host.h>
 261 #include "aha152x.h"
 262
 263
 264 /* DEFINES */
 265
 266 /* For PCMCIA cards, always use AUTOCONF */
 267 #if defined(PCMCIA) || defined(MODULE)
 268 #if !defined(AUTOCONF)
 269 #define AUTOCONF
 270 #endif
 271 #endif
 272
 273 #if !defined(AUTOCONF) && !defined(SETUP0)
 274 #error define AUTOCONF or SETUP0
 275 #endif
 276
 277 #if defined(AHA152X_DEBUG)
 278 #define DEBUG_DEFAULT debug_eh
 279
 280 #define DPRINTK(when,msgs...) \
 281         do { if(HOSTDATA(shpnt)->debug & (when)) printk(msgs); } while(0)
 282
 283 #define DO_LOCK(flags)  \
 284         do { \
 285                 if(spin_is_locked(&QLOCK)) { \
 286                         DPRINTK(debug_intr, DEBUG_LEAD "(%s:%d) already locked at %s:%d\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__, QLOCKER, QLOCKERL); \
 287                 } \
 288                 DPRINTK(debug_locks, DEBUG_LEAD "(%s:%d) locking\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__); \
 289                 spin_lock_irqsave(&QLOCK,flags); \
 290                 DPRINTK(debug_locks, DEBUG_LEAD "(%s:%d) locked\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__); \
 291                 QLOCKER=__FUNCTION__; \
 292                 QLOCKERL=__LINE__; \
 293         } while(0)
 294
 295 #define DO_UNLOCK(flags)        \
 296         do { \
 297                 DPRINTK(debug_locks, DEBUG_LEAD "(%s:%d) unlocking (locked at %s:%d)\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__, QLOCKER, QLOCKERL); \
 298                 spin_unlock_irqrestore(&QLOCK,flags); \
 299                 DPRINTK(debug_locks, DEBUG_LEAD "(%s:%d) unlocked\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__); \
 300                 QLOCKER="(not locked)"; \
 301                 QLOCKERL=0; \
 302         } while(0)
 303
 304 #else
 305 #define DPRINTK(when,msgs...)
 306 #define DO_LOCK(flags)          spin_lock_irqsave(&QLOCK,flags)
 307 #define DO_UNLOCK(flags)        spin_unlock_irqrestore(&QLOCK,flags)
 308 #endif
 309
 310 #define LEAD            "(scsi%d:%d:%d) "
 311 #define WARN_LEAD       KERN_WARNING    LEAD
 312 #define INFO_LEAD       KERN_INFO       LEAD
 313 #define NOTE_LEAD       KERN_NOTICE     LEAD
 314 #define ERR_LEAD        KERN_ERR        LEAD
 315 #define DEBUG_LEAD      KERN_DEBUG      LEAD
 316 #define CMDINFO(cmd) \
 317                         (cmd) ? ((cmd)->device->host->host_no) : -1, \
 318                         (cmd) ? ((cmd)->device->id & 0x0f) : -1, \
 319                         (cmd) ? ((cmd)->device->lun & 0x07) : -1
 320
 321 #define DELAY_DEFAULT 1000
 322
 323 #if defined(PCMCIA)
 324 #define IRQ_MIN 0
 325 #define IRQ_MAX 16
 326 #else
 327 #define IRQ_MIN 9
 328 #if defined(__PPC)
 329 #define IRQ_MAX (NR_IRQS-1)
 330 #else
 331 #define IRQ_MAX 12
 332 #endif
 333 #endif
 334
 335 enum {
 336         not_issued      = 0x0001,       /* command not yet issued */
 337         selecting       = 0x0002,       /* target is beeing selected */
 338         identified      = 0x0004,       /* IDENTIFY was sent */
 339         disconnected    = 0x0008,       /* target disconnected */
 340         completed       = 0x0010,       /* target sent COMMAND COMPLETE */
 341         aborted         = 0x0020,       /* ABORT was sent */
 342         resetted        = 0x0040,       /* BUS DEVICE RESET was sent */
 343         spiordy         = 0x0080,       /* waiting for SPIORDY to raise */
 344         syncneg         = 0x0100,       /* synchronous negotiation in progress */
 345         aborting        = 0x0200,       /* ABORT is pending */
 346         resetting       = 0x0400,       /* BUS DEVICE RESET is pending */
 347         check_condition = 0x0800,       /* requesting sense after CHECK CONDITION */
 348 };
 349
 350 MODULE_AUTHOR("Jürgen Fischer");
 351 MODULE_DESCRIPTION(AHA152X_REVID);
 352 MODULE_LICENSE("GPL");
 353
 354 #if !defined(PCMCIA)
 355 #if defined(MODULE)
 356 static int io[] = {0, 0};
 357 module_param_array(io, int, NULL, 0);
 358 MODULE_PARM_DESC(io,"base io address of controller");
 359
 360 static int irq[] = {0, 0};
 361 module_param_array(irq, int, NULL, 0);
 362 MODULE_PARM_DESC(irq,"interrupt for controller");
 363
 364 static int scsiid[] = {7, 7};
 365 module_param_array(scsiid, int, NULL, 0);
 366 MODULE_PARM_DESC(scsiid,"scsi id of controller");
 367
 368 static int reconnect[] = {1, 1};
 369 module_param_array(reconnect, int, NULL, 0);
 370 MODULE_PARM_DESC(reconnect,"allow targets to disconnect");
 371
 372 static int parity[] = {1, 1};
 373 module_param_array(parity, int, NULL, 0);
 374 MODULE_PARM_DESC(parity,"use scsi parity");
 375
 376 static int sync[] = {1, 1};
 377 module_param_array(sync, int, NULL, 0);
 378 MODULE_PARM_DESC(sync,"use synchronous transfers");
 379
 380 static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT};
 381 module_param_array(delay, int, NULL, 0);
 382 MODULE_PARM_DESC(delay,"scsi reset delay");
 383
 384 static int exttrans[] = {0, 0};
 385 module_param_array(exttrans, int, NULL, 0);
 386 MODULE_PARM_DESC(exttrans,"use extended translation");
 387
 388 #if !defined(AHA152X_DEBUG)
 389 static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
 390 module_param_array(aha152x, int, NULL, 0);
 391 MODULE_PARM_DESC(aha152x, "parameters for first controller");
 392
 393 static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
 394 module_param_array(aha152x1, int, NULL, 0);
 395 MODULE_PARM_DESC(aha152x1, "parameters for second controller");
 396 #else
 397 static int debug[] = {DEBUG_DEFAULT, DEBUG_DEFAULT};
 398 module_param_array(debug, int, NULL, 0);
 399 MODULE_PARM_DESC(debug, "flags for driver debugging");
 400
 401 static int aha152x[]   = {0, 11, 7, 1, 1, 1, DELAY_DEFAULT, 0, DEBUG_DEFAULT};
 402 module_param_array(aha152x, int, NULL, 0);
 403 MODULE_PARM_DESC(aha152x, "parameters for first controller");
 404
 405 static int aha152x1[]  = {0, 11, 7, 1, 1, 1, DELAY_DEFAULT, 0, DEBUG_DEFAULT};
 406 module_param_array(aha152x1, int, NULL, 0);
 407 MODULE_PARM_DESC(aha152x1, "parameters for second controller");
 408 #endif /* !defined(AHA152X_DEBUG) */
 409 #endif /* MODULE */
 410
 411 #ifdef __ISAPNP__
 412 static struct isapnp_device_id id_table[] __devinitdata = {
 413         { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
 414                 ISAPNP_VENDOR('A','D','P'), ISAPNP_FUNCTION(0x1505), 0 },
 415         { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
 416                 ISAPNP_VENDOR('A','D','P'), ISAPNP_FUNCTION(0x1530), 0 },
 417         { ISAPNP_DEVICE_SINGLE_END, }
 418 };
 419 MODULE_DEVICE_TABLE(isapnp, id_table);
 420 #endif /* ISAPNP */
 421
 422 #endif /* !PCMCIA */
 423
 424 static int registered_count=0;
 425 static struct Scsi_Host *aha152x_host[2];
 426 static Scsi_Host_Template aha152x_driver_template;
 427
 428 /*
 429  * internal states of the host
 430  *
 431  */
 432 enum aha152x_state {
 433         idle=0,
 434         unknown,
 435         seldo,
 436         seldi,
 437         selto,
 438         busfree,
 439         msgo,
 440         cmd,
 441         msgi,
 442         status,
 443         datai,
 444         datao,
 445         parerr,
 446         rsti,
 447         maxstate
 448 };
 449
 450 /*
 451  * current state information of the host
 452  *
 453  */
 454 struct aha152x_hostdata {
 455         Scsi_Cmnd *issue_SC;
 456                 /* pending commands to issue */
 457
 458         Scsi_Cmnd *current_SC;
 459                 /* current command on the bus */
 460
 461         Scsi_Cmnd *disconnected_SC;
 462                 /* commands that disconnected */
 463
 464         Scsi_Cmnd *done_SC;
 465                 /* command that was completed */
 466
 467         spinlock_t lock;
 468                 /* host lock */
 469
 470 #if defined(AHA152X_DEBUG)
 471         const char *locker;
 472                 /* which function has the lock */
 473         int lockerl;    /* where did it get it */
 474
 475         int debug;      /* current debugging setting */
 476 #endif
 477
 478 #if defined(AHA152X_STAT)
 479         int           total_commands;
 480         int           disconnections;
 481         int           busfree_without_any_action;
 482         int           busfree_without_old_command;
 483         int           busfree_without_new_command;
 484         int           busfree_without_done_command;
 485         int           busfree_with_check_condition;
 486         int           count[maxstate];
 487         int           count_trans[maxstate];
 488         unsigned long time[maxstate];
 489 #endif
 490
 491         int commands;           /* current number of commands */
 492
 493         int reconnect;          /* disconnection allowed */
 494         int parity;             /* parity checking enabled */
 495         int synchronous;        /* synchronous transferes enabled */
 496         int delay;              /* reset out delay */
 497         int ext_trans;          /* extended translation enabled */
 498
 499         int swint;              /* software-interrupt was fired during detect() */
 500         int service;            /* bh needs to be run */
 501         int in_intr;            /* bh is running */
 502
 503         /* current state,
 504            previous state,
 505            last state different from current state */
 506         enum aha152x_state state, prevstate, laststate;
 507
 508         int target;
 509                 /* reconnecting target */
 510
 511         unsigned char syncrate[8];
 512                 /* current synchronous transfer agreements */
 513
 514         unsigned char syncneg[8];
 515                 /* 0: no negotiation;
 516                  * 1: negotiation in progress;
 517                  * 2: negotiation completed
 518                  */
 519
 520         int cmd_i;
 521                 /* number of sent bytes of current command */
 522
 523         int msgi_len;
 524                 /* number of received message bytes */
 525         unsigned char msgi[256];
 526                 /* received message bytes */
 527
 528         int msgo_i, msgo_len;
 529                 /* number of sent bytes and length of current messages */
 530         unsigned char msgo[256];
 531                 /* pending messages */
 532
 533         int data_len;
 534                 /* number of sent/received bytes in dataphase */
 535
 536         unsigned long io_port0;
 537         unsigned long io_port1;
 538
 539 #ifdef __ISAPNP__
 540         struct pnp_dev *pnpdev;
 541 #endif
 542 };
 543
 544
 545 /*
 546  * host specific command extension
 547  *
 548  */
 549 struct aha152x_scdata {
 550         Scsi_Cmnd *next;        /* next sc in queue */
 551         struct semaphore *sem;  /* semaphore to block on */
 552 };
 553
 554
 555 /* access macros for hostdata */
 556
 557 #define HOSTDATA(shpnt)         ((struct aha152x_hostdata *) &shpnt->hostdata)
 558
 559 #define HOSTNO                  ((shpnt)->host_no)
 560
 561 #define CURRENT_SC              (HOSTDATA(shpnt)->current_SC)
 562 #define DONE_SC                 (HOSTDATA(shpnt)->done_SC)
 563 #define ISSUE_SC                (HOSTDATA(shpnt)->issue_SC)
 564 #define DISCONNECTED_SC         (HOSTDATA(shpnt)->disconnected_SC)
 565 #define QLOCK                   (HOSTDATA(shpnt)->lock)
 566 #define QLOCKER                 (HOSTDATA(shpnt)->locker)
 567 #define QLOCKERL                (HOSTDATA(shpnt)->lockerl)
 568
 569 #define STATE                   (HOSTDATA(shpnt)->state)
 570 #define PREVSTATE               (HOSTDATA(shpnt)->prevstate)
 571 #define LASTSTATE               (HOSTDATA(shpnt)->laststate)
 572
 573 #define RECONN_TARGET           (HOSTDATA(shpnt)->target)
 574
 575 #define CMD_I                   (HOSTDATA(shpnt)->cmd_i)
 576
 577 #define MSGO(i)                 (HOSTDATA(shpnt)->msgo[i])
 578 #define MSGO_I                  (HOSTDATA(shpnt)->msgo_i)
 579 #define MSGOLEN                 (HOSTDATA(shpnt)->msgo_len)
 580 #define ADDMSGO(x)              (MSGOLEN<256 ? (void)(MSGO(MSGOLEN++)=x) : aha152x_error(shpnt,"MSGO overflow"))
 581
 582 #define MSGI(i)                 (HOSTDATA(shpnt)->msgi[i])
 583 #define MSGILEN                 (HOSTDATA(shpnt)->msgi_len)
 584 #define ADDMSGI(x)              (MSGILEN<256 ? (void)(MSGI(MSGILEN++)=x) : aha152x_error(shpnt,"MSGI overflow"))
 585
 586 #define DATA_LEN                (HOSTDATA(shpnt)->data_len)
 587
 588 #define SYNCRATE                (HOSTDATA(shpnt)->syncrate[CURRENT_SC->device->id])
 589 #define SYNCNEG                 (HOSTDATA(shpnt)->syncneg[CURRENT_SC->device->id])
 590
 591 #define DELAY                   (HOSTDATA(shpnt)->delay)
 592 #define EXT_TRANS               (HOSTDATA(shpnt)->ext_trans)
 593 #define TC1550                  (HOSTDATA(shpnt)->tc1550)
 594 #define RECONNECT               (HOSTDATA(shpnt)->reconnect)
 595 #define PARITY                  (HOSTDATA(shpnt)->parity)
 596 #define SYNCHRONOUS             (HOSTDATA(shpnt)->synchronous)
 597
 598 #define HOSTIOPORT0             (HOSTDATA(shpnt)->io_port0)
 599 #define HOSTIOPORT1             (HOSTDATA(shpnt)->io_port1)
 600
 601 #define SCDATA(SCpnt)           ((struct aha152x_scdata *) (SCpnt)->host_scribble)
 602 #define SCNEXT(SCpnt)           SCDATA(SCpnt)->next
 603 #define SCSEM(SCpnt)            SCDATA(SCpnt)->sem
 604
 605 #define SG_ADDRESS(buffer)      ((char *) (page_address((buffer)->page)+(buffer)->offset))
 606
 607 /* state handling */
 608 static void seldi_run(struct Scsi_Host *shpnt);
 609 static void seldo_run(struct Scsi_Host *shpnt);
 610 static void selto_run(struct Scsi_Host *shpnt);
 611 static void busfree_run(struct Scsi_Host *shpnt);
 612
 613 static void msgo_init(struct Scsi_Host *shpnt);
 614 static void msgo_run(struct Scsi_Host *shpnt);
 615 static void msgo_end(struct Scsi_Host *shpnt);
 616
 617 static void cmd_init(struct Scsi_Host *shpnt);
 618 static void cmd_run(struct Scsi_Host *shpnt);
 619 static void cmd_end(struct Scsi_Host *shpnt);
 620
 621 static void datai_init(struct Scsi_Host *shpnt);
 622 static void datai_run(struct Scsi_Host *shpnt);
 623 static void datai_end(struct Scsi_Host *shpnt);
 624
 625 static void datao_init(struct Scsi_Host *shpnt);
 626 static void datao_run(struct Scsi_Host *shpnt);
 627 static void datao_end(struct Scsi_Host *shpnt);
 628
 629 static void status_run(struct Scsi_Host *shpnt);
 630
 631 static void msgi_run(struct Scsi_Host *shpnt);
 632 static void msgi_end(struct Scsi_Host *shpnt);
 633
 634 static void parerr_run(struct Scsi_Host *shpnt);
 635 static void rsti_run(struct Scsi_Host *shpnt);
 636
 637 static void is_complete(struct Scsi_Host *shpnt);
 638
 639 /*
 640  * driver states
 641  *
 642  */
 643 static struct {
 644         char            *name;
 645         void            (*init)(struct Scsi_Host *);
 646         void            (*run)(struct Scsi_Host *);
 647         void            (*end)(struct Scsi_Host *);
 648         int             spio;
 649 } states[] = {
 650         { "idle",       NULL,           NULL,           NULL,           0},
 651         { "unknown",    NULL,           NULL,           NULL,           0},
 652         { "seldo",      NULL,           seldo_run,      NULL,           0},
 653         { "seldi",      NULL,           seldi_run,      NULL,           0},
 654         { "selto",      NULL,           selto_run,      NULL,           0},
 655         { "busfree",    NULL,           busfree_run,    NULL,           0},
 656         { "msgo",       msgo_init,      msgo_run,       msgo_end,       1},
 657         { "cmd",        cmd_init,       cmd_run,        cmd_end,        1},
 658         { "msgi",       NULL,           msgi_run,       msgi_end,       1},
 659         { "status",     NULL,           status_run,     NULL,           1},
 660         { "datai",      datai_init,     datai_run,      datai_end,      0},
 661         { "datao",      datao_init,     datao_run,      datao_end,      0},
 662         { "parerr",     NULL,           parerr_run,     NULL,           0},
 663         { "rsti",       NULL,           rsti_run,       NULL,           0},
 664 };
 665
 666 /* setup & interrupt */
 667 static irqreturn_t intr(int irq, void *dev_id, struct pt_regs *);
 668 static void reset_ports(struct Scsi_Host *shpnt);
 669 static void aha152x_error(struct Scsi_Host *shpnt, char *msg);
 670 static void done(struct Scsi_Host *shpnt, int error);
 671
 672 /* diagnostics */
 673 static void disp_ports(struct Scsi_Host *shpnt);
 674 static void show_command(Scsi_Cmnd * ptr);
 675 static void show_queues(struct Scsi_Host *shpnt);
 676 static void disp_enintr(struct Scsi_Host *shpnt);
 677
 678
 679 /*
 680  *  queue services:
 681  *
 682  */
 683 static inline void append_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC)
 684 {
 685         Scsi_Cmnd *end;
 686
 687         SCNEXT(new_SC) = NULL;
 688         if (!*SC)
 689                 *SC = new_SC;
 690         else {
 691                 for (end = *SC; SCNEXT(end); end = SCNEXT(end))
 692                         ;
 693                 SCNEXT(end) = new_SC;
 694         }
 695 }
 696
 697 static inline Scsi_Cmnd *remove_first_SC(Scsi_Cmnd ** SC)
 698 {
 699         Scsi_Cmnd *ptr;
 700
 701         ptr = *SC;
 702         if (ptr) {
 703                 *SC = SCNEXT(*SC);
 704                 SCNEXT(ptr)=NULL;
 705         }
 706         return ptr;
 707 }
 708
 709 static inline Scsi_Cmnd *remove_lun_SC(Scsi_Cmnd ** SC, int target, int lun)
 710 {
 711         Scsi_Cmnd *ptr, *prev;
 712
 713         for (ptr = *SC, prev = NULL;
 714              ptr && ((ptr->device->id != target) || (ptr->device->lun != lun));
 715              prev = ptr, ptr = SCNEXT(ptr))
 716              ;
 717
 718         if (ptr) {
 719                 if (prev)
 720                         SCNEXT(prev) = SCNEXT(ptr);
 721                 else
 722                         *SC = SCNEXT(ptr);
 723
 724                 SCNEXT(ptr)=NULL;
 725         }
 726
 727         return ptr;
 728 }
 729
 730 static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, Scsi_Cmnd *SCp)
 731 {
 732         Scsi_Cmnd *ptr, *prev;
 733
 734         for (ptr = *SC, prev = NULL;
 735              ptr && SCp!=ptr;
 736              prev = ptr, ptr = SCNEXT(ptr))
 737              ;
 738
 739         if (ptr) {
 740                 if (prev)
 741                         SCNEXT(prev) = SCNEXT(ptr);
 742                 else
 743                         *SC = SCNEXT(ptr);
 744
 745                 SCNEXT(ptr)=NULL;
 746         }
 747
 748         return ptr;
 749 }
 750
 751 static inline struct Scsi_Host *lookup_irq(int irqno)
 752 {
 753         int i;
 754
 755         for(i=0; i<ARRAY_SIZE(aha152x_host); i++)
 756                 if(aha152x_host[i] && aha152x_host[i]->irq==irqno)
 757                         return aha152x_host[i];
 758
 759         return NULL;
 760 }
 761
 762 static irqreturn_t swintr(int irqno, void *dev_id, struct pt_regs *regs)
 763 {
 764         struct Scsi_Host *shpnt = lookup_irq(irqno);
 765
 766         if (!shpnt) {
 767                 printk(KERN_ERR "aha152x: catched software interrupt %d for unknown controller.\n", irqno);
 768                 return IRQ_NONE;
 769         }
 770
 771         HOSTDATA(shpnt)->swint++;
 772
 773         SETPORT(DMACNTRL0, INTEN);
 774         return IRQ_HANDLED;
 775 }
 776
 777 struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)
 778 {
 779         struct Scsi_Host *shpnt;
 780
 781         shpnt = scsi_host_alloc(&aha152x_driver_template, sizeof(struct aha152x_hostdata));
 782         if (!shpnt) {
 783                 printk(KERN_ERR "aha152x: scsi_host_alloc failed\n");
 784                 return NULL;
 785         }
 786
 787         /* need to have host registered before triggering any interrupt */
 788         aha152x_host[registered_count] = shpnt;
 789
 790         memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt));
 791
 792         shpnt->io_port   = setup->io_port;
 793         shpnt->n_io_port = IO_RANGE;
 794         shpnt->irq       = setup->irq;
 795
 796         if (!setup->tc1550) {
 797                 HOSTIOPORT0 = setup->io_port;
 798                 HOSTIOPORT1 = setup->io_port;
 799         } else {
 800                 HOSTIOPORT0 = setup->io_port+0x10;
 801                 HOSTIOPORT1 = setup->io_port-0x10;
 802         }
 803
 804         spin_lock_init(&QLOCK);
 805         RECONNECT   = setup->reconnect;
 806         SYNCHRONOUS = setup->synchronous;
 807         PARITY      = setup->parity;
 808         DELAY       = setup->delay;
 809         EXT_TRANS   = setup->ext_trans;
 810
 811 #if defined(AHA152X_DEBUG)
 812         HOSTDATA(shpnt)->debug = setup->debug;
 813 #endif
 814
 815         SETPORT(SCSIID, setup->scsiid << 4);
 816         shpnt->this_id = setup->scsiid;
 817
 818         if (setup->reconnect)
 819                 shpnt->can_queue = AHA152X_MAXQUEUE;
 820
 821         /* RESET OUT */
 822         printk("aha152x: resetting bus...\n");
 823         SETPORT(SCSISEQ, SCSIRSTO);
 824         mdelay(256);
 825         SETPORT(SCSISEQ, 0);
 826         mdelay(DELAY);
 827
 828         reset_ports(shpnt);
 829
 830         printk(KERN_INFO
 831                "aha152x%d%s: "
 832                "vital data: rev=%x, "
 833                "io=0x%03lx (0x%03lx/0x%03lx), "
 834                "irq=%d, "
 835                "scsiid=%d, "
 836                "reconnect=%s, "
 837                "parity=%s, "
 838                "synchronous=%s, "
 839                "delay=%d, "
 840                "extended translation=%s\n",
 841                shpnt->host_no, setup->tc1550 ? " (tc1550 mode)" : "",
 842                GETPORT(REV) & 0x7,
 843                shpnt->io_port, HOSTIOPORT0, HOSTIOPORT1,
 844                shpnt->irq,
 845                shpnt->this_id,
 846                RECONNECT ? "enabled" : "disabled",
 847                PARITY ? "enabled" : "disabled",
 848                SYNCHRONOUS ? "enabled" : "disabled",
 849                DELAY,
 850                EXT_TRANS ? "enabled" : "disabled");
 851
 852         /* not expecting any interrupts */
 853         SETPORT(SIMODE0, 0);
 854         SETPORT(SIMODE1, 0);
 855
 856         if( request_irq(shpnt->irq, swintr, SA_INTERRUPT|SA_SHIRQ, "aha152x", shpnt) ) {
 857                 printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq);
 858                 goto out_host_put;
 859         }
 860
 861         HOSTDATA(shpnt)->swint = 0;
 862
 863         printk(KERN_INFO "aha152x%d: trying software interrupt, ", shpnt->host_no);
 864
 865         mb();
 866         SETPORT(DMACNTRL0, SWINT|INTEN);
 867         mdelay(1000);
 868         free_irq(shpnt->irq, shpnt);
 869
 870         if (!HOSTDATA(shpnt)->swint) {
 871                 if (TESTHI(DMASTAT, INTSTAT)) {
 872                         printk("lost.\n");
 873                 } else {
 874                         printk("failed.\n");
 875                 }
 876
 877                 SETPORT(DMACNTRL0, INTEN);
 878
 879                 printk(KERN_ERR "aha152x%d: irq %d possibly wrong.  "
 880                                 "Please verify.\n", shpnt->host_no, shpnt->irq);
 881                 goto out_host_put;
 882         }
 883         printk("ok.\n");
 884
 885
 886         /* clear interrupts */
 887         SETPORT(SSTAT0, 0x7f);
 888         SETPORT(SSTAT1, 0xef);
 889
 890         if ( request_irq(shpnt->irq, intr, SA_INTERRUPT|SA_SHIRQ, "aha152x", shpnt) ) {
 891                 printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq);
 892                 goto out_host_put;
 893         }
 894
 895         if( scsi_add_host(shpnt, NULL) ) {
 896                 free_irq(shpnt->irq, shpnt);
 897                 printk(KERN_ERR "aha152x%d: failed to add host.\n", shpnt->host_no);
 898                 goto out_host_put;
 899         }
 900
 901         scsi_scan_host(shpnt);
 902
 903         registered_count++;
 904
 905         return shpnt;
 906
 907 out_host_put:
 908         aha152x_host[registered_count]=NULL;
 909         scsi_host_put(shpnt);
 910
 911         return NULL;
 912 }
 913
 914 void aha152x_release(struct Scsi_Host *shpnt)
 915 {
 916         if(!shpnt)
 917                 return;
 918
 919         if (shpnt->irq)
 920                 free_irq(shpnt->irq, shpnt);
 921
 922 #if !defined(PCMCIA)
 923         if (shpnt->io_port)
 924                 release_region(shpnt->io_port, IO_RANGE);
 925 #endif
 926
 927 #ifdef __ISAPNP__
 928         if (HOSTDATA(shpnt)->pnpdev)
 929                 pnp_device_detach(HOSTDATA(shpnt)->pnpdev);
 930 #endif
 931
 932         scsi_remove_host(shpnt);
 933         scsi_host_put(shpnt);
 934 }
 935
 936
 937 /*
 938  * setup controller to generate interrupts depending
 939  * on current state (lock has to be acquired)
 940  *
 941  */
 942 static int setup_expected_interrupts(struct Scsi_Host *shpnt)
 943 {
 944         if(CURRENT_SC) {
 945                 CURRENT_SC->SCp.phase |= 1 << 16;
 946
 947                 if(CURRENT_SC->SCp.phase & selecting) {
 948                         DPRINTK(debug_intr, DEBUG_LEAD "expecting: (seldo) (seltimo) (seldi)\n", CMDINFO(CURRENT_SC));
 949                         SETPORT(SSTAT1, SELTO);
 950                         SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0));
 951                         SETPORT(SIMODE1, ENSELTIMO);
 952                 } else {
 953                         DPRINTK(debug_intr, DEBUG_LEAD "expecting: (phase change) (busfree) %s\n", CMDINFO(CURRENT_SC), CURRENT_SC->SCp.phase & spiordy ? "(spiordy)" : "");
 954                         SETPORT(SIMODE0, (CURRENT_SC->SCp.phase & spiordy) ? ENSPIORDY : 0);
 955                         SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
 956                 }
 957         } else if(STATE==seldi) {
 958                 DPRINTK(debug_intr, DEBUG_LEAD "expecting: (phase change) (identify)\n", CMDINFO(CURRENT_SC));
 959                 SETPORT(SIMODE0, 0);
 960                 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
 961         } else {
 962                 DPRINTK(debug_intr, DEBUG_LEAD "expecting: %s %s\n",
 963                         CMDINFO(CURRENT_SC),
 964                         DISCONNECTED_SC ? "(reselection)" : "",
 965                         ISSUE_SC ? "(busfree)" : "");
 966                 SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0);
 967                 SETPORT(SIMODE1, ENSCSIRST | ( (ISSUE_SC||DONE_SC) ? ENBUSFREE : 0));
 968         }
 969
 970         if(!HOSTDATA(shpnt)->in_intr)
 971                 SETBITS(DMACNTRL0, INTEN);
 972
 973         return TESTHI(DMASTAT, INTSTAT);
 974 }
 975
 976
 977 /*
 978  *  Queue a command and setup interrupts for a free bus.
 979  */
 980 static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, struct semaphore *sem, int phase, void (*done)(Scsi_Cmnd *))
 981 {
 982         struct Scsi_Host *shpnt = SCpnt->device->host;
 983         unsigned long flags;
 984
 985 #if defined(AHA152X_DEBUG)
 986         if (HOSTDATA(shpnt)->debug & debug_queue) {
 987                 printk(INFO_LEAD "queue: %p; cmd_len=%d pieces=%d size=%u cmnd=",
 988                        CMDINFO(SCpnt), SCpnt, SCpnt->cmd_len, SCpnt->use_sg, SCpnt->request_bufflen);
 989                 print_command(SCpnt->cmnd);
 990         }
 991 #endif
 992
 993         SCpnt->scsi_done        = done;
 994         SCpnt->resid            = SCpnt->request_bufflen;
 995         SCpnt->SCp.phase        = not_issued | phase;
 996         SCpnt->SCp.Status       = CHECK_CONDITION;
 997         SCpnt->SCp.Message      = 0;
 998         SCpnt->SCp.have_data_in = 0;
 999         SCpnt->SCp.sent_command = 0;
1000
1001         if(SCpnt->SCp.phase & (resetting|check_condition)) {
1002                 if(SCpnt->host_scribble==0 || SCSEM(SCpnt) || SCNEXT(SCpnt)) {
1003                         printk(ERR_LEAD "cannot reuse command\n", CMDINFO(SCpnt));
1004                         return FAILED;
1005                 }
1006         } else {
1007                 SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC);
1008                 if(SCpnt->host_scribble==0) {
1009                         printk(ERR_LEAD "allocation failed\n", CMDINFO(SCpnt));
1010                         return FAILED;
1011                 }
1012         }
1013
1014         SCNEXT(SCpnt)           = NULL;
1015         SCSEM(SCpnt)            = sem;
1016
1017         /* setup scratch area
1018            SCp.ptr              : buffer pointer
1019            SCp.this_residual    : buffer length
1020            SCp.buffer           : next buffer
1021            SCp.buffers_residual : left buffers in list
1022            SCp.phase            : current state of the command */
1023         if (SCpnt->use_sg) {
1024                 SCpnt->SCp.buffer           = (struct scatterlist *) SCpnt->request_buffer;
1025                 SCpnt->SCp.ptr              = SG_ADDRESS(SCpnt->SCp.buffer);
1026                 SCpnt->SCp.this_residual    = SCpnt->SCp.buffer->length;
1027                 SCpnt->SCp.buffers_residual = SCpnt->use_sg - 1;
1028         } else {
1029                 SCpnt->SCp.ptr              = (char *) SCpnt->request_buffer;
1030                 SCpnt->SCp.this_residual    = SCpnt->request_bufflen;
1031                 SCpnt->SCp.buffer           = NULL;
1032                 SCpnt->SCp.buffers_residual = 0;
1033         }
1034
1035         DO_LOCK(flags);
1036
1037 #if defined(AHA152X_STAT)
1038         HOSTDATA(shpnt)->total_commands++;
1039 #endif
1040
1041         /* Turn led on, when this is the first command. */
1042         HOSTDATA(shpnt)->commands++;
1043         if (HOSTDATA(shpnt)->commands==1)
1044                 SETPORT(PORTA, 1);
1045
1046         append_SC(&ISSUE_SC, SCpnt);
1047
1048         if(!HOSTDATA(shpnt)->in_intr)
1049                 setup_expected_interrupts(shpnt);
1050
1051         DO_UNLOCK(flags);
1052
1053         return 0;
1054 }
1055
1056 /*
1057  *  queue a command
1058  *
1059  */
1060 static int aha152x_queue(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
1061 {
1062 #if 0
1063         if(*SCpnt->cmnd == REQUEST_SENSE) {
1064                 SCpnt->result = 0;
1065                 done(SCpnt);
1066
1067                 return 0;
1068         }
1069 #endif
1070
1071         return aha152x_internal_queue(SCpnt, NULL, 0, done);
1072 }
1073
1074
1075 /*
1076  *
1077  *
1078  */
1079 static void reset_done(Scsi_Cmnd *SCpnt)
1080 {
1081 #if 0
1082         struct Scsi_Host *shpnt = SCpnt->host;
1083         DPRINTK(debug_eh, INFO_LEAD "reset_done called\n", CMDINFO(SCpnt));
1084 #endif
1085         if(SCSEM(SCpnt)) {
1086                 up(SCSEM(SCpnt));
1087         } else {
1088                 printk(KERN_ERR "aha152x: reset_done w/o semaphore\n");
1089         }
1090 }
1091
1092 /*
1093  *  Abort a command
1094  *
1095  */
1096 static int aha152x_abort(Scsi_Cmnd *SCpnt)
1097 {
1098         struct Scsi_Host *shpnt = SCpnt->device->host;
1099         Scsi_Cmnd *ptr;
1100         unsigned long flags;
1101
1102 #if defined(AHA152X_DEBUG)
1103         if(HOSTDATA(shpnt)->debug & debug_eh) {
1104                 printk(DEBUG_LEAD "abort(%p)", CMDINFO(SCpnt), SCpnt);
1105                 show_queues(shpnt);
1106         }
1107 #endif
1108
1109         DO_LOCK(flags);
1110
1111         ptr=remove_SC(&ISSUE_SC, SCpnt);
1112
1113         if(ptr) {
1114                 DPRINTK(debug_eh, DEBUG_LEAD "not yet issued - SUCCESS\n", CMDINFO(SCpnt));
1115
1116                 HOSTDATA(shpnt)->commands--;
1117                 if (!HOSTDATA(shpnt)->commands)
1118                         SETPORT(PORTA, 0);
1119                 DO_UNLOCK(flags);
1120
1121                 kfree(SCpnt->host_scribble);
1122                 SCpnt->host_scribble=NULL;
1123
1124                 return SUCCESS;
1125         }
1126
1127         DO_UNLOCK(flags);
1128
1129         /*
1130          * FIXME:
1131          * for current command: queue ABORT for message out and raise ATN
1132          * for disconnected command: pseudo SC with ABORT message or ABORT on reselection?
1133          *
1134          */
1135
1136         printk(ERR_LEAD "cannot abort running or disconnected command\n", CMDINFO(SCpnt));
1137
1138         return FAILED;
1139 }
1140
1141 static void timer_expired(unsigned long p)
1142 {
1143         Scsi_Cmnd        *SCp   = (Scsi_Cmnd *)p;
1144         struct semaphore *sem   = SCSEM(SCp);
1145         struct Scsi_Host *shpnt = SCp->device->host;
1146         unsigned long flags;
1147
1148         /* remove command from issue queue */
1149         DO_LOCK(flags);
1150         remove_SC(&ISSUE_SC, SCp);
1151         DO_UNLOCK(flags);
1152
1153         up(sem);
1154 }
1155
1156 /*
1157  * Reset a device
1158  *
1159  */
1160 static int aha152x_device_reset(Scsi_Cmnd * SCpnt)
1161 {
1162         struct Scsi_Host *shpnt = SCpnt->device->host;
1163         DECLARE_MUTEX_LOCKED(sem);
1164         struct timer_list timer;
1165         int ret, issued, disconnected;
1166         unsigned long flags;
1167
1168 #if defined(AHA152X_DEBUG)
1169         if(HOSTDATA(shpnt)->debug & debug_eh) {
1170                 printk(INFO_LEAD "aha152x_device_reset(%p)", CMDINFO(SCpnt), SCpnt);
1171                 show_queues(shpnt);
1172         }
1173 #endif
1174
1175         if(CURRENT_SC==SCpnt) {
1176                 printk(ERR_LEAD "cannot reset current device\n", CMDINFO(SCpnt));
1177                 return FAILED;
1178         }
1179
1180         DO_LOCK(flags);
1181         issued       = remove_SC(&ISSUE_SC, SCpnt)==0;
1182         disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt);
1183         DO_UNLOCK(flags);
1184
1185         SCpnt->cmd_len         = 0;
1186         SCpnt->use_sg          = 0;
1187         SCpnt->request_buffer  = NULL;
1188         SCpnt->request_bufflen = 0;
1189
1190         init_timer(&timer);
1191         timer.data     = (unsigned long) SCpnt;
1192         timer.expires  = jiffies + 100*HZ;   /* 10s */
1193         timer.function = (void (*)(unsigned long)) timer_expired;
1194
1195         aha152x_internal_queue(SCpnt, &sem, resetting, reset_done);
1196         add_timer(&timer);
1197         down(&sem);
1198         del_timer(&timer);
1199
1200         SCpnt->cmd_len         = SCpnt->old_cmd_len;
1201         SCpnt->use_sg          = SCpnt->old_use_sg;
1202         SCpnt->request_buffer  = SCpnt->buffer;
1203         SCpnt->request_bufflen = SCpnt->bufflen;
1204
1205         DO_LOCK(flags);
1206
1207         if(SCpnt->SCp.phase & resetted) {
1208                 HOSTDATA(shpnt)->commands--;
1209                 if (!HOSTDATA(shpnt)->commands)
1210                         SETPORT(PORTA, 0);
1211                 kfree(SCpnt->host_scribble);
1212                 SCpnt->host_scribble=NULL;
1213
1214                 ret = SUCCESS;
1215         } else {
1216                 /* requeue */
1217                 if(!issued) {
1218                         append_SC(&ISSUE_SC, SCpnt);
1219                 } else if(disconnected) {
1220                         append_SC(&DISCONNECTED_SC, SCpnt);
1221                 }
1222
1223                 ret = FAILED;
1224         }
1225
1226         DO_UNLOCK(flags);
1227
1228         spin_lock_irq(shpnt->host_lock);
1229         return ret;
1230 }
1231
1232 static void free_hard_reset_SCs(struct Scsi_Host *shpnt, Scsi_Cmnd **SCs)
1233 {
1234         Scsi_Cmnd *ptr;
1235
1236         ptr=*SCs;
1237         while(ptr) {
1238                 Scsi_Cmnd *next;
1239
1240                 if(SCDATA(ptr)) {
1241                         next = SCNEXT(ptr);
1242                 } else {
1243                         printk(DEBUG_LEAD "queue corrupted at %p\n", CMDINFO(ptr), ptr);
1244                         next = NULL;
1245                 }
1246
1247                 if (!ptr->device->soft_reset) {
1248                         DPRINTK(debug_eh, DEBUG_LEAD "disconnected command %p removed\n", CMDINFO(ptr), ptr);
1249                         remove_SC(SCs, ptr);
1250                         HOSTDATA(shpnt)->commands--;
1251                         kfree(ptr->host_scribble);
1252                         ptr->host_scribble=NULL;
1253                 }
1254
1255                 ptr = next;
1256         }
1257 }
1258
1259 /*
1260  * Reset the bus
1261  *
1262  */
1263 static int aha152x_bus_reset(Scsi_Cmnd *SCpnt)
1264 {
1265         struct Scsi_Host *shpnt = SCpnt->device->host;
1266         unsigned long flags;
1267
1268         DO_LOCK(flags);
1269
1270 #if defined(AHA152X_DEBUG)
1271         if(HOSTDATA(shpnt)->debug & debug_eh) {
1272                 printk(DEBUG_LEAD "aha152x_bus_reset(%p)", CMDINFO(SCpnt), SCpnt);
1273                 show_queues(shpnt);
1274         }
1275 #endif
1276
1277         free_hard_reset_SCs(shpnt, &ISSUE_SC);
1278         free_hard_reset_SCs(shpnt, &DISCONNECTED_SC);
1279
1280         DPRINTK(debug_eh, DEBUG_LEAD "resetting bus\n", CMDINFO(SCpnt));
1281
1282         SETPORT(SCSISEQ, SCSIRSTO);
1283         mdelay(256);
1284         SETPORT(SCSISEQ, 0);
1285         mdelay(DELAY);
1286
1287         DPRINTK(debug_eh, DEBUG_LEAD "bus resetted\n", CMDINFO(SCpnt));
1288
1289         setup_expected_interrupts(shpnt);
1290         if(HOSTDATA(shpnt)->commands==0)
1291                 SETPORT(PORTA, 0);
1292
1293         DO_UNLOCK(flags);
1294
1295         return SUCCESS;
1296 }
1297
1298
1299 /*
1300  *  Restore default values to the AIC-6260 registers and reset the fifos
1301  *
1302  */
1303 static void reset_ports(struct Scsi_Host *shpnt)
1304 {
1305         unsigned long flags;
1306
1307         /* disable interrupts */
1308         SETPORT(DMACNTRL0, RSTFIFO);
1309
1310         SETPORT(SCSISEQ, 0);
1311
1312         SETPORT(SXFRCTL1, 0);
1313         SETPORT(SCSISIG, 0);
1314         SETRATE(0);
1315
1316         /* clear all interrupt conditions */
1317         SETPORT(SSTAT0, 0x7f);
1318         SETPORT(SSTAT1, 0xef);
1319
1320         SETPORT(SSTAT4, SYNCERR | FWERR | FRERR);
1321
1322         SETPORT(DMACNTRL0, 0);
1323         SETPORT(DMACNTRL1, 0);
1324
1325         SETPORT(BRSTCNTRL, 0xf1);
1326
1327         /* clear SCSI fifos and transfer count */
1328         SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1329         SETPORT(SXFRCTL0, CH1);
1330
1331         DO_LOCK(flags);
1332         setup_expected_interrupts(shpnt);
1333         DO_UNLOCK(flags);
1334 }
1335
1336 /*
1337  * Reset the host (bus and controller)
1338  *
1339  */
1340 int aha152x_host_reset(Scsi_Cmnd * SCpnt)
1341 {
1342 #if defined(AHA152X_DEBUG)
1343         struct Scsi_Host *shpnt = SCpnt->device->host;
1344 #endif
1345
1346         DPRINTK(debug_eh, DEBUG_LEAD "aha152x_host_reset(%p)\n", CMDINFO(SCpnt), SCpnt);
1347
1348         aha152x_bus_reset(SCpnt);
1349
1350         DPRINTK(debug_eh, DEBUG_LEAD "resetting ports\n", CMDINFO(SCpnt));
1351         reset_ports(SCpnt->device->host);
1352
1353         return SUCCESS;
1354 }
1355
1356 /*
1357  * Return the "logical geometry"
1358  *
1359  */
1360 static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev,
1361                 sector_t capacity, int *info_array)
1362 {
1363         struct Scsi_Host *shpnt = sdev->host;
1364
1365         /* try default translation */
1366         info_array[0] = 64;
1367         info_array[1] = 32;
1368         info_array[2] = (unsigned long)capacity / (64 * 32);
1369
1370         /* for disks >1GB do some guessing */
1371         if (info_array[2] >= 1024) {
1372                 int info[3];
1373
1374                 /* try to figure out the geometry from the partition table */
1375                 if (scsicam_bios_param(bdev, capacity, info) < 0 ||
1376                     !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) {
1377                         if (EXT_TRANS) {
1378                                 printk(KERN_NOTICE
1379                                        "aha152x: unable to verify geometry for disk with >1GB.\n"
1380                                        "         using extended translation.\n");
1381                                 info_array[0] = 255;
1382                                 info_array[1] = 63;
1383                                 info_array[2] = (unsigned long)capacity / (255 * 63);
1384                         } else {
1385                                 printk(KERN_NOTICE
1386                                        "aha152x: unable to verify geometry for disk with >1GB.\n"
1387                                        "         Using default translation. Please verify yourself.\n"
1388                                        "         Perhaps you need to enable extended translation in the driver.\n"
1389                                        "         See Documentation/scsi/aha152x.txt for details.\n");
1390                         }
1391                 } else {
1392                         info_array[0] = info[0];
1393                         info_array[1] = info[1];
1394                         info_array[2] = info[2];
1395
1396                         if (info[0] == 255 && !EXT_TRANS) {
1397                                 printk(KERN_NOTICE
1398                                        "aha152x: current partition table is using extended translation.\n"
1399                                        "         using it also, although it's not explicitly enabled.\n");
1400                         }
1401                 }
1402         }
1403
1404         return 0;
1405 }
1406
1407 /*
1408  *  Internal done function
1409  *
1410  */
1411 static void done(struct Scsi_Host *shpnt, int error)
1412 {
1413         if (CURRENT_SC) {
1414                 if(DONE_SC)
1415                         printk(ERR_LEAD "there's already a completed command %p - will cause abort\n", CMDINFO(CURRENT_SC), DONE_SC);
1416
1417                 DONE_SC = CURRENT_SC;
1418                 CURRENT_SC = NULL;
1419                 DONE_SC->result = error;
1420         } else
1421                 printk(KERN_ERR "aha152x: done() called outside of command\n");
1422 }
1423
1424 static struct work_struct aha152x_tq;
1425
1426 /*
1427  * Run service completions on the card with interrupts enabled.
1428  *
1429  */
1430 static void run(void)
1431 {
1432         int i;
1433         for (i = 0; i<ARRAY_SIZE(aha152x_host); i++) {
1434                 struct Scsi_Host *shpnt = aha152x_host[i];
1435                 if (shpnt && HOSTDATA(shpnt)->service) {
1436                         HOSTDATA(shpnt)->service=0;
1437                         is_complete(shpnt);
1438                 }
1439         }
1440 }
1441
1442 /*
1443  *    Interrupts handler
1444  *
1445  */
1446
1447 static irqreturn_t intr(int irqno, void *dev_id, struct pt_regs *regs)
1448 {
1449         struct Scsi_Host *shpnt = lookup_irq(irqno);
1450         unsigned char rev, dmacntrl0;
1451
1452         if (!shpnt) {
1453                 printk(KERN_ERR "aha152x: catched interrupt %d for unknown controller.\n", irqno);
1454                 return IRQ_NONE;
1455         }
1456
1457         /*
1458          * Read a couple of registers that are known to not be all 1's. If
1459          * we read all 1's (-1), that means that either:
1460          *
1461          * a. The host adapter chip has gone bad, and we cannot control it,
1462          *      OR
1463          * b. The host adapter is a PCMCIA card that has been ejected
1464          *
1465          * In either case, we cannot do anything with the host adapter at
1466          * this point in time. So just ignore the interrupt and return.
1467          * In the latter case, the interrupt might actually be meant for
1468          * someone else sharing this IRQ, and that driver will handle it.
1469          */
1470         rev = GETPORT(REV);
1471         dmacntrl0 = GETPORT(DMACNTRL0);
1472         if ((rev == 0xFF) && (dmacntrl0 == 0xFF))
1473                 return IRQ_NONE;
1474
1475         /* no more interrupts from the controller, while we're busy.
1476            INTEN is restored by the BH handler */
1477         CLRBITS(DMACNTRL0, INTEN);
1478
1479 #if 0
1480         /* check if there is already something to be
1481            serviced; should not happen */
1482         if(HOSTDATA(shpnt)->service) {
1483                 printk(KERN_ERR "aha152x%d: lost interrupt (%d)\n", HOSTNO, HOSTDATA(shpnt)->service);
1484                 show_queues(shpnt);
1485         }
1486 #endif
1487
1488         /* Poke the BH handler */
1489         HOSTDATA(shpnt)->service++;
1490         INIT_WORK(&aha152x_tq, (void *) run, NULL);
1491         schedule_work(&aha152x_tq);
1492         return IRQ_HANDLED;
1493 }
1494
1495 /*
1496  * busfree phase
1497  * - handle completition/disconnection/error of current command
1498  * - start selection for next command (if any)
1499  */
1500 static void busfree_run(struct Scsi_Host *shpnt)
1501 {
1502         unsigned long flags;
1503 #if defined(AHA152X_STAT)
1504         int action=0;
1505 #endif
1506
1507         SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1508         SETPORT(SXFRCTL0, CH1);
1509
1510         SETPORT(SSTAT1, CLRBUSFREE);
1511
1512         if(CURRENT_SC) {
1513 #if defined(AHA152X_STAT)
1514                 action++;
1515 #endif
1516                 CURRENT_SC->SCp.phase &= ~syncneg;
1517
1518                 if(CURRENT_SC->SCp.phase & completed) {
1519                         /* target sent COMMAND COMPLETE */
1520                         done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16));
1521
1522                 } else if(CURRENT_SC->SCp.phase & aborted) {
1523                         DPRINTK(debug_eh, DEBUG_LEAD "ABORT sent\n", CMDINFO(CURRENT_SC));
1524                         done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_ABORT << 16));
1525
1526                 } else if(CURRENT_SC->SCp.phase & resetted) {
1527                         DPRINTK(debug_eh, DEBUG_LEAD "BUS DEVICE RESET sent\n", CMDINFO(CURRENT_SC));
1528                         done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_RESET << 16));
1529
1530                 } else if(CURRENT_SC->SCp.phase & disconnected) {
1531                         /* target sent DISCONNECT */
1532                         DPRINTK(debug_selection, DEBUG_LEAD "target disconnected at %d/%d\n",
1533                                 CMDINFO(CURRENT_SC),
1534                                 CURRENT_SC->resid,
1535                                 CURRENT_SC->request_bufflen);
1536 #if defined(AHA152X_STAT)
1537                         HOSTDATA(shpnt)->disconnections++;
1538 #endif
1539                         append_SC(&DISCONNECTED_SC, CURRENT_SC);
1540                         CURRENT_SC->SCp.phase |= 1 << 16;
1541                         CURRENT_SC = NULL;
1542
1543                 } else {
1544                         done(shpnt, DID_ERROR << 16);
1545                 }
1546 #if defined(AHA152X_STAT)
1547         } else {
1548                 HOSTDATA(shpnt)->busfree_without_old_command++;
1549 #endif
1550         }
1551
1552         DO_LOCK(flags);
1553
1554         if(DONE_SC) {
1555 #if defined(AHA152X_STAT)
1556                 action++;
1557 #endif
1558
1559                 if(DONE_SC->SCp.phase & check_condition) {
1560 #if 0
1561                         if(HOSTDATA(shpnt)->debug & debug_eh) {
1562                                 printk(ERR_LEAD "received sense: ", CMDINFO(DONE_SC));
1563                                 print_sense("bh", DONE_SC);
1564                         }
1565 #endif
1566
1567                         /* restore old command */
1568                         memcpy((void *) DONE_SC->cmnd, (void *) DONE_SC->data_cmnd, sizeof(DONE_SC->data_cmnd));
1569                         DONE_SC->request_buffer  = DONE_SC->buffer;
1570                         DONE_SC->request_bufflen = DONE_SC->bufflen;
1571                         DONE_SC->use_sg          = DONE_SC->old_use_sg;
1572                         DONE_SC->cmd_len         = DONE_SC->old_cmd_len;
1573
1574                         DONE_SC->SCp.Status = 0x02;
1575
1576                         HOSTDATA(shpnt)->commands--;
1577                         if (!HOSTDATA(shpnt)->commands)
1578                                 SETPORT(PORTA, 0);      /* turn led off */
1579                 } else if(DONE_SC->SCp.Status==0x02) {
1580 #if defined(AHA152X_STAT)
1581                         HOSTDATA(shpnt)->busfree_with_check_condition++;
1582 #endif
1583 #if 0
1584                         DPRINTK(debug_eh, ERR_LEAD "CHECK CONDITION found\n", CMDINFO(DONE_SC));
1585 #endif
1586
1587                         if(!(DONE_SC->SCp.Status & not_issued)) {
1588                                 Scsi_Cmnd *ptr = DONE_SC;
1589                                 DONE_SC=NULL;
1590 #if 0
1591                                 DPRINTK(debug_eh, ERR_LEAD "requesting sense\n", CMDINFO(ptr));
1592 #endif
1593
1594                                 ptr->cmnd[0]         = REQUEST_SENSE;
1595                                 ptr->cmnd[1]         = 0;
1596                                 ptr->cmnd[2]         = 0;
1597                                 ptr->cmnd[3]         = 0;
1598                                 ptr->cmnd[4]         = sizeof(ptr->sense_buffer);
1599                                 ptr->cmnd[5]         = 0;
1600                                 ptr->cmd_len         = 6;
1601                                 ptr->use_sg          = 0;
1602                                 ptr->request_buffer  = ptr->sense_buffer;
1603                                 ptr->request_bufflen = sizeof(ptr->sense_buffer);
1604
1605                                 DO_UNLOCK(flags);
1606                                 aha152x_internal_queue(ptr, NULL, check_condition, ptr->scsi_done);
1607                                 DO_LOCK(flags);
1608 #if 0
1609                         } else {
1610                                 DPRINTK(debug_eh, ERR_LEAD "command not issued - CHECK CONDITION ignored\n", CMDINFO(DONE_SC));
1611 #endif
1612                         }
1613                 }
1614
1615                 if(DONE_SC && DONE_SC->scsi_done) {
1616 #if defined(AHA152X_DEBUG)
1617                         int hostno=DONE_SC->device->host->host_no;
1618                         int id=DONE_SC->device->id & 0xf;
1619                         int lun=DONE_SC->device->lun & 0x7;
1620 #endif
1621                         Scsi_Cmnd *ptr = DONE_SC;
1622                         DONE_SC=NULL;
1623
1624                         /* turn led off, when no commands are in the driver */
1625                         HOSTDATA(shpnt)->commands--;
1626                         if (!HOSTDATA(shpnt)->commands)
1627                                 SETPORT(PORTA, 0);      /* turn led off */
1628
1629                         if(ptr->scsi_done != reset_done) {
1630                                 kfree(ptr->host_scribble);
1631                                 ptr->host_scribble=NULL;
1632                         }
1633
1634                         DO_UNLOCK(flags);
1635                         DPRINTK(debug_done, DEBUG_LEAD "calling scsi_done(%p)\n", hostno, id, lun, ptr);
1636                         ptr->scsi_done(ptr);
1637                         DPRINTK(debug_done, DEBUG_LEAD "scsi_done(%p) returned\n", hostno, id, lun, ptr);
1638                         DO_LOCK(flags);
1639                 }
1640
1641                 DONE_SC=NULL;
1642 #if defined(AHA152X_STAT)
1643         } else {
1644                 HOSTDATA(shpnt)->busfree_without_done_command++;
1645 #endif
1646         }
1647
1648         if(ISSUE_SC)
1649                 CURRENT_SC = remove_first_SC(&ISSUE_SC);
1650
1651         DO_UNLOCK(flags);
1652
1653         if(CURRENT_SC) {
1654 #if defined(AHA152X_STAT)
1655                 action++;
1656 #endif
1657                 CURRENT_SC->SCp.phase |= selecting;
1658
1659                 DPRINTK(debug_selection, DEBUG_LEAD "selecting target\n", CMDINFO(CURRENT_SC));
1660
1661                 /* clear selection timeout */
1662                 SETPORT(SSTAT1, SELTO);
1663
1664                 SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id);
1665                 SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER);
1666                 SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0));
1667         } else {
1668 #if defined(AHA152X_STAT)
1669                 HOSTDATA(shpnt)->busfree_without_new_command++;
1670 #endif
1671                 SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0);
1672         }
1673
1674 #if defined(AHA152X_STAT)
1675         if(!action)
1676                 HOSTDATA(shpnt)->busfree_without_any_action++;
1677 #endif
1678 }
1679
1680 /*
1681  * Selection done (OUT)
1682  * - queue IDENTIFY message and SDTR to selected target for message out
1683  *   (ATN asserted automagically via ENAUTOATNO in busfree())
1684  */
1685 static void seldo_run(struct Scsi_Host *shpnt)
1686 {
1687         SETPORT(SCSISIG, 0);
1688         SETPORT(SSTAT1, CLRBUSFREE);
1689         SETPORT(SSTAT1, CLRPHASECHG);
1690
1691         CURRENT_SC->SCp.phase &= ~(selecting|not_issued);
1692
1693         SETPORT(SCSISEQ, 0);
1694
1695         if (TESTLO(SSTAT0, SELDO)) {
1696                 printk(ERR_LEAD "aha152x: passing bus free condition\n", CMDINFO(CURRENT_SC));
1697                 done(shpnt, DID_NO_CONNECT << 16);
1698                 return;
1699         }
1700
1701         SETPORT(SSTAT0, CLRSELDO);
1702
1703         ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1704
1705         if (CURRENT_SC->SCp.phase & aborting) {
1706                 ADDMSGO(ABORT);
1707         } else if (CURRENT_SC->SCp.phase & resetting) {
1708                 ADDMSGO(BUS_DEVICE_RESET);
1709         } else if (SYNCNEG==0 && SYNCHRONOUS) {
1710                 CURRENT_SC->SCp.phase |= syncneg;
1711                 ADDMSGO(EXTENDED_MESSAGE);
1712                 ADDMSGO(3);
1713                 ADDMSGO(EXTENDED_SDTR);
1714                 ADDMSGO(50);            /* 200ns */
1715                 ADDMSGO(8);             /* 8 byte req/ack offset */
1716
1717                 SYNCNEG=1;              /* negotiation in progress */
1718         }
1719
1720         SETRATE(SYNCRATE);
1721 }
1722
1723 /*
1724  * Selection timeout
1725  * - return command to mid-level with failure cause
1726  *
1727  */
1728 static void selto_run(struct Scsi_Host *shpnt)
1729 {
1730         SETPORT(SCSISEQ, 0);
1731         SETPORT(SSTAT1, CLRSELTIMO);
1732
1733         DPRINTK(debug_selection, DEBUG_LEAD "selection timeout\n", CMDINFO(CURRENT_SC));
1734
1735         if(!CURRENT_SC) {
1736                 DPRINTK(debug_selection, DEBUG_LEAD "!CURRENT_SC\n", CMDINFO(CURRENT_SC));
1737                 return;
1738         }
1739
1740         CURRENT_SC->SCp.phase &= ~selecting;
1741
1742         if (CURRENT_SC->SCp.phase & aborted) {
1743                 DPRINTK(debug_selection, DEBUG_LEAD "aborted\n", CMDINFO(CURRENT_SC));
1744                 done(shpnt, DID_ABORT << 16);
1745         } else if (TESTLO(SSTAT0, SELINGO)) {
1746                 DPRINTK(debug_selection, DEBUG_LEAD "arbitration not won\n", CMDINFO(CURRENT_SC));
1747                 done(shpnt, DID_BUS_BUSY << 16);
1748         } else {
1749                 /* ARBITRATION won, but SELECTION failed */
1750                 DPRINTK(debug_selection, DEBUG_LEAD "selection failed\n", CMDINFO(CURRENT_SC));
1751                 done(shpnt, DID_NO_CONNECT << 16);
1752         }
1753 }
1754
1755 /*
1756  * Selection in done
1757  * - put current command back to issue queue
1758  *   (reconnection of a disconnected nexus instead
1759  *    of successful selection out)
1760  *
1761  */
1762 static void seldi_run(struct Scsi_Host *shpnt)
1763 {
1764         int selid;
1765         int target;
1766         unsigned long flags;
1767
1768         SETPORT(SCSISIG, 0);
1769         SETPORT(SSTAT0, CLRSELDI);
1770         SETPORT(SSTAT1, CLRBUSFREE);
1771         SETPORT(SSTAT1, CLRPHASECHG);
1772
1773         if(CURRENT_SC) {
1774                 if(!(CURRENT_SC->SCp.phase & not_issued))
1775                         printk(ERR_LEAD "command should not have been issued yet\n", CMDINFO(CURRENT_SC));
1776
1777                 DPRINTK(debug_selection, ERR_LEAD "command requeued - reselection\n", CMDINFO(CURRENT_SC));
1778
1779                 DO_LOCK(flags);
1780                 append_SC(&ISSUE_SC, CURRENT_SC);
1781                 DO_UNLOCK(flags);
1782
1783                 CURRENT_SC = NULL;
1784         }
1785
1786         if(!DISCONNECTED_SC) {
1787                 DPRINTK(debug_selection, DEBUG_LEAD "unexpected SELDI ", CMDINFO(CURRENT_SC));
1788                 return;
1789         }
1790
1791         RECONN_TARGET=-1;
1792
1793         selid = GETPORT(SELID) & ~(1 << shpnt->this_id);
1794
1795         if (selid==0) {
1796                 printk("aha152x%d: target id unknown (%02x)\n", HOSTNO, selid);
1797                 return;
1798         }
1799
1800         for(target=7; !(selid & (1 << target)); target--)
1801                 ;
1802
1803         if(selid & ~(1 << target)) {
1804                 printk("aha152x%d: multiple targets reconnected (%02x)\n",
1805                        HOSTNO, selid);
1806         }
1807
1808
1809         SETPORT(SCSIID, (shpnt->this_id << OID_) | target);
1810         SETPORT(SCSISEQ, 0);
1811
1812         SETRATE(HOSTDATA(shpnt)->syncrate[target]);
1813
1814         RECONN_TARGET=target;
1815         DPRINTK(debug_selection, DEBUG_LEAD "target %d reselected (%02x).\n", CMDINFO(CURRENT_SC), target, selid);
1816 }
1817
1818 /*
1819  * message in phase
1820  * - handle initial message after reconnection to identify
1821  *   reconnecting nexus
1822  * - queue command on DISCONNECTED_SC on DISCONNECT message
1823  * - set completed flag on COMMAND COMPLETE
1824  *   (other completition code moved to busfree_run)
1825  * - handle response to SDTR
1826  * - clear synchronous transfer agreements on BUS RESET
1827  *
1828  * FIXME: what about SAVE POINTERS, RESTORE POINTERS?
1829  *
1830  */
1831 static void msgi_run(struct Scsi_Host *shpnt)
1832 {
1833         for(;;) {
1834                 int sstat1 = GETPORT(SSTAT1);
1835
1836                 if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT))
1837                         return;
1838
1839                 if(TESTLO(SSTAT0,SPIORDY)) {
1840                         DPRINTK(debug_msgi, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
1841                         return;
1842                 }
1843
1844                 ADDMSGI(GETPORT(SCSIDAT));
1845
1846 #if defined(AHA152X_DEBUG)
1847                 if (HOSTDATA(shpnt)->debug & debug_msgi) {
1848                         printk(INFO_LEAD "inbound message %02x ", CMDINFO(CURRENT_SC), MSGI(0));
1849                         print_msg(&MSGI(0));
1850                         printk("\n");
1851                 }
1852 #endif
1853
1854                 if(!CURRENT_SC) {
1855                         if(LASTSTATE!=seldi) {
1856                                 printk(KERN_ERR "aha152x%d: message in w/o current command not after reselection\n", HOSTNO);
1857                         }
1858
1859                         /*
1860                          * Handle reselection
1861                          */
1862                         if(!(MSGI(0) & IDENTIFY_BASE)) {
1863                                 printk(KERN_ERR "aha152x%d: target didn't identify after reselection\n", HOSTNO);
1864                                 continue;
1865                         }
1866
1867                         CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f);
1868
1869                         if (!CURRENT_SC) {
1870                                 show_queues(shpnt);
1871                                 printk(KERN_ERR "aha152x%d: no disconnected command for target %d/%d\n", HOSTNO, RECONN_TARGET, MSGI(0) & 0x3f);
1872                                 continue;
1873                         }
1874
1875                         DPRINTK(debug_msgi, DEBUG_LEAD "target reconnected\n", CMDINFO(CURRENT_SC));
1876
1877                         CURRENT_SC->SCp.Message = MSGI(0);
1878                         CURRENT_SC->SCp.phase &= ~disconnected;
1879
1880                         MSGILEN=0;
1881
1882                         /* next message if any */
1883                         continue;
1884                 }
1885
1886                 CURRENT_SC->SCp.Message = MSGI(0);
1887
1888                 switch (MSGI(0)) {
1889                 case DISCONNECT:
1890                         if (!RECONNECT)
1891                                 printk(WARN_LEAD "target was not allowed to disconnect\n", CMDINFO(CURRENT_SC));
1892
1893                         CURRENT_SC->SCp.phase |= disconnected;
1894                         break;
1895
1896                 case COMMAND_COMPLETE:
1897                         if(CURRENT_SC->SCp.phase & completed)
1898                                 DPRINTK(debug_msgi, DEBUG_LEAD "again COMMAND COMPLETE\n", CMDINFO(CURRENT_SC));
1899
1900                         CURRENT_SC->SCp.phase |= completed;
1901                         break;
1902
1903                 case MESSAGE_REJECT:
1904                         if (SYNCNEG==1) {
1905                                 printk(INFO_LEAD "Synchronous Data Transfer Request was rejected\n", CMDINFO(CURRENT_SC));
1906                                 SYNCNEG=2;      /* negotiation completed */
1907                         } else
1908                                 printk(INFO_LEAD "inbound message (MESSAGE REJECT)\n", CMDINFO(CURRENT_SC));
1909                         break;
1910
1911                 case SAVE_POINTERS:
1912                         break;
1913
1914                 case RESTORE_POINTERS:
1915                         break;
1916
1917                 case EXTENDED_MESSAGE:
1918                         if(MSGILEN<2 || MSGILEN<MSGI(1)+2) {
1919                                 /* not yet completed */
1920                                 continue;
1921                         }
1922
1923                         switch (MSGI(2)) {
1924                         case EXTENDED_SDTR:
1925                                 {
1926                                         long ticks;
1927
1928                                         if (MSGI(1) != 3) {
1929                                                 printk(ERR_LEAD "SDTR message length!=3\n", CMDINFO(CURRENT_SC));
1930                                                 break;
1931                                         }
1932
1933                                         if (!HOSTDATA(shpnt)->synchronous)
1934                                                 break;
1935
1936                                         printk(INFO_LEAD, CMDINFO(CURRENT_SC));
1937                                         print_msg(&MSGI(0));
1938                                         printk("\n");
1939
1940                                         ticks = (MSGI(3) * 4 + 49) / 50;
1941
1942                                         if (syncneg) {
1943                                                 /* negotiation in progress */
1944                                                 if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) {
1945                                                         ADDMSGO(MESSAGE_REJECT);
1946                                                         printk(INFO_LEAD "received Synchronous Data Transfer Request invalid - rejected\n", CMDINFO(CURRENT_SC));
1947                                                         break;
1948                                                 }
1949
1950                                                 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1951                                         } else if (ticks <= 9 && MSGI(4) >= 1) {
1952                                                 ADDMSGO(EXTENDED_MESSAGE);
1953                                                 ADDMSGO(3);
1954                                                 ADDMSGO(EXTENDED_SDTR);
1955                                                 if (ticks < 4) {
1956                                                         ticks = 4;
1957                                                         ADDMSGO(50);
1958                                                 } else
1959                                                         ADDMSGO(MSGI(3));
1960
1961                                                 if (MSGI(4) > 8)
1962                                                         MSGI(4) = 8;
1963
1964                                                 ADDMSGO(MSGI(4));
1965
1966                                                 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1967                                         } else {
1968                                                 /* requested SDTR is too slow, do it asynchronously */
1969                                                 printk(INFO_LEAD "Synchronous Data Transfer Request too slow - Rejecting\n", CMDINFO(CURRENT_SC));
1970                                                 ADDMSGO(MESSAGE_REJECT);
1971                                         }
1972
1973                                         SYNCNEG=2;              /* negotiation completed */
1974                                         SETRATE(SYNCRATE);
1975                                 }
1976                                 break;
1977
1978                         case BUS_DEVICE_RESET:
1979                                 {
1980                                         int i;
1981
1982                                         for(i=0; i<8; i++) {
1983                                                 HOSTDATA(shpnt)->syncrate[i]=0;
1984                                                 HOSTDATA(shpnt)->syncneg[i]=0;
1985                                         }
1986
1987                                 }
1988                                 break;
1989
1990                         case EXTENDED_MODIFY_DATA_POINTER:
1991                         case EXTENDED_EXTENDED_IDENTIFY:
1992                         case EXTENDED_WDTR:
1993                         default:
1994                                 ADDMSGO(MESSAGE_REJECT);
1995                                 break;
1996                         }
1997                         break;
1998                 }
1999
2000                 MSGILEN=0;
2001         }
2002 }
2003
2004 static void msgi_end(struct Scsi_Host *shpnt)
2005 {
2006         if(MSGILEN>0)
2007                 printk(WARN_LEAD "target left before message completed (%d)\n", CMDINFO(CURRENT_SC), MSGILEN);
2008
2009         if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE)) {
2010                 DPRINTK(debug_msgi, DEBUG_LEAD "msgo pending\n", CMDINFO(CURRENT_SC));
2011                 SETPORT(SCSISIG, P_MSGI | SIG_ATNO);
2012         }
2013 }
2014
2015 /*
2016  * message out phase
2017  *
2018  */
2019 static void msgo_init(struct Scsi_Host *shpnt)
2020 {
2021         if(MSGOLEN==0) {
2022                 if((CURRENT_SC->SCp.phase & syncneg) && SYNCNEG==2 && SYNCRATE==0) {
2023                         ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
2024                 } else {
2025                         printk(INFO_LEAD "unexpected MESSAGE OUT phase; rejecting\n", CMDINFO(CURRENT_SC));
2026                         ADDMSGO(MESSAGE_REJECT);
2027                 }
2028         }
2029
2030 #if defined(AHA152X_DEBUG)
2031         if(HOSTDATA(shpnt)->debug & debug_msgo) {
2032                 int i;
2033
2034                 printk(DEBUG_LEAD "messages( ", CMDINFO(CURRENT_SC));
2035                 for (i=0; i<MSGOLEN; i+=print_msg(&MSGO(i)), printk(" "))
2036                         ;
2037                 printk(")\n");
2038         }
2039 #endif
2040 }
2041
2042 /*
2043  * message out phase
2044  *
2045  */
2046 static void msgo_run(struct Scsi_Host *shpnt)
2047 {
2048         if(MSGO_I==MSGOLEN)
2049                 DPRINTK(debug_msgo, DEBUG_LEAD "messages all sent (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO_I, MSGOLEN);
2050
2051         while(MSGO_I<MSGOLEN) {
2052                 DPRINTK(debug_msgo, DEBUG_LEAD "message byte %02x (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO(MSGO_I), MSGO_I, MSGOLEN);
2053
2054                 if(TESTLO(SSTAT0, SPIORDY)) {
2055                         DPRINTK(debug_msgo, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
2056                         return;
2057                 }
2058
2059                 if (MSGO_I==MSGOLEN-1) {
2060                         /* Leave MESSAGE OUT after transfer */
2061                         SETPORT(SSTAT1, CLRATNO);
2062                 }
2063
2064
2065                 if (MSGO(MSGO_I) & IDENTIFY_BASE)
2066                         CURRENT_SC->SCp.phase |= identified;
2067
2068                 if (MSGO(MSGO_I)==ABORT)
2069                         CURRENT_SC->SCp.phase |= aborted;
2070
2071                 if (MSGO(MSGO_I)==BUS_DEVICE_RESET)
2072                         CURRENT_SC->SCp.phase |= resetted;
2073
2074                 SETPORT(SCSIDAT, MSGO(MSGO_I++));
2075         }
2076 }
2077
2078 static void msgo_end(struct Scsi_Host *shpnt)
2079 {
2080         if(MSGO_I<MSGOLEN) {
2081                 printk(ERR_LEAD "message sent incompletely (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO_I, MSGOLEN);
2082                 if(SYNCNEG==1) {
2083                         printk(INFO_LEAD "Synchronous Data Transfer Request was rejected\n", CMDINFO(CURRENT_SC));
2084                         SYNCNEG=2;
2085                 }
2086         }
2087
2088         MSGO_I  = 0;
2089         MSGOLEN = 0;
2090 }
2091
2092 /*
2093  * command phase
2094  *
2095  */
2096 static void cmd_init(struct Scsi_Host *shpnt)
2097 {
2098         if (CURRENT_SC->SCp.sent_command) {
2099                 printk(ERR_LEAD "command already sent\n", CMDINFO(CURRENT_SC));
2100                 done(shpnt, DID_ERROR << 16);
2101                 return;
2102         }
2103
2104 #if defined(AHA152X_DEBUG)
2105         if (HOSTDATA(shpnt)->debug & debug_cmd) {
2106                 printk(DEBUG_LEAD "cmd_init: ", CMDINFO(CURRENT_SC));
2107                 print_command(CURRENT_SC->cmnd);
2108         }
2109 #endif
2110
2111         CMD_I=0;
2112 }
2113
2114 /*
2115  * command phase
2116  *
2117  */
2118 static void cmd_run(struct Scsi_Host *shpnt)
2119 {
2120         if(CMD_I==CURRENT_SC->cmd_len) {
2121                 DPRINTK(debug_cmd, DEBUG_LEAD "command already completely sent (%d/%d)", CMDINFO(CURRENT_SC), CMD_I, CURRENT_SC->cmd_len);
2122                 disp_ports(shpnt);
2123         }
2124
2125         while(CMD_I<CURRENT_SC->cmd_len) {
2126                 DPRINTK(debug_cmd, DEBUG_LEAD "command byte %02x (%d/%d)\n", CMDINFO(CURRENT_SC), CURRENT_SC->cmnd[CMD_I], CMD_I, CURRENT_SC->cmd_len);
2127
2128                 if(TESTLO(SSTAT0, SPIORDY)) {
2129                         DPRINTK(debug_cmd, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
2130                         return;
2131                 }
2132
2133                 SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]);
2134         }
2135 }
2136
2137 static void cmd_end(struct Scsi_Host *shpnt)
2138 {
2139         if(CMD_I<CURRENT_SC->cmd_len)
2140                 printk(ERR_LEAD "command sent incompletely (%d/%d)\n", CMDINFO(CURRENT_SC), CMD_I, CURRENT_SC->cmd_len);
2141         else
2142                 CURRENT_SC->SCp.sent_command++;
2143 }
2144
2145 /*
2146  * status phase
2147  *
2148  */
2149 static void status_run(struct Scsi_Host *shpnt)
2150 {
2151         if(TESTLO(SSTAT0,SPIORDY)) {
2152                 DPRINTK(debug_status, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
2153                 return;
2154         }
2155
2156         CURRENT_SC->SCp.Status = GETPORT(SCSIDAT);
2157
2158 #if defined(AHA152X_DEBUG)
2159         if (HOSTDATA(shpnt)->debug & debug_status) {
2160                 printk(DEBUG_LEAD "inbound status %02x ", CMDINFO(CURRENT_SC), CURRENT_SC->SCp.Status);
2161                 print_status(CURRENT_SC->SCp.Status);
2162                 printk("\n");
2163         }
2164 #endif
2165 }
2166
2167 /*
2168  * data in phase
2169  *
2170  */
2171 static void datai_init(struct Scsi_Host *shpnt)
2172 {
2173         SETPORT(DMACNTRL0, RSTFIFO);
2174         SETPORT(DMACNTRL0, RSTFIFO|ENDMA);
2175
2176         SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2177         SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
2178
2179         SETPORT(SIMODE0, 0);
2180         SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE);
2181
2182         DATA_LEN=0;
2183         DPRINTK(debug_datai,
2184                 DEBUG_LEAD "datai_init: request_bufflen=%d resid=%d\n",
2185                 CMDINFO(CURRENT_SC), CURRENT_SC->request_bufflen, CURRENT_SC->resid);
2186 }
2187
2188 static void datai_run(struct Scsi_Host *shpnt)
2189 {
2190         unsigned long the_time;
2191         int fifodata, data_count;
2192
2193         /*
2194          * loop while the phase persists or the fifos are not empty
2195          *
2196          */
2197         while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) {
2198                 /* FIXME: maybe this should be done by setting up
2199                  * STCNT to trigger ENSWRAP interrupt, instead of
2200                  * polling for DFIFOFULL
2201                  */
2202                 the_time=jiffies + 100*HZ;
2203                 while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time))
2204                         barrier();
2205
2206                 if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) {
2207                         printk(ERR_LEAD "datai timeout", CMDINFO(CURRENT_SC));
2208                         disp_ports(shpnt);
2209                         break;
2210                 }
2211
2212                 if(TESTHI(DMASTAT, DFIFOFULL)) {
2213                         fifodata = 128;
2214                 } else {
2215                         the_time=jiffies + 100*HZ;
2216                         while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time))
2217                                 barrier();
2218
2219                         if(TESTLO(SSTAT2, SEMPTY)) {
2220                                 printk(ERR_LEAD "datai sempty timeout", CMDINFO(CURRENT_SC));
2221                                 disp_ports(shpnt);
2222                                 break;
2223                         }
2224
2225                         fifodata = GETPORT(FIFOSTAT);
2226                 }
2227
2228                 if(CURRENT_SC->SCp.this_residual>0) {
2229                         while(fifodata>0 && CURRENT_SC->SCp.this_residual>0) {
2230                                 data_count = fifodata>CURRENT_SC->SCp.this_residual ?
2231                                                 CURRENT_SC->SCp.this_residual :
2232                                                 fifodata;
2233                                 fifodata -= data_count;
2234
2235                                 if(data_count & 1) {
2236                                         DPRINTK(debug_datai, DEBUG_LEAD "8bit\n", CMDINFO(CURRENT_SC));
2237                                         SETPORT(DMACNTRL0, ENDMA|_8BIT);
2238                                         *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT);
2239                                         CURRENT_SC->SCp.this_residual--;
2240                                         DATA_LEN++;
2241                                         SETPORT(DMACNTRL0, ENDMA);
2242                                 }
2243
2244                                 if(data_count > 1) {
2245                                         DPRINTK(debug_datai, DEBUG_LEAD "16bit(%d)\n", CMDINFO(CURRENT_SC), data_count);
2246                                         data_count >>= 1;
2247                                         insw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2248                                         CURRENT_SC->SCp.ptr           += 2 * data_count;
2249                                         CURRENT_SC->SCp.this_residual -= 2 * data_count;
2250                                         DATA_LEN                      += 2 * data_count;
2251                                 }
2252
2253                                 if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
2254                                         /* advance to next buffer */
2255                                         CURRENT_SC->SCp.buffers_residual--;
2256                                         CURRENT_SC->SCp.buffer++;
2257                                         CURRENT_SC->SCp.ptr           = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2258                                         CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2259                                 }
2260                         }
2261                 } else if(fifodata>0) {
2262                         printk(ERR_LEAD "no buffers left for %d(%d) bytes (data overrun!?)\n", CMDINFO(CURRENT_SC), fifodata, GETPORT(FIFOSTAT));
2263                         SETPORT(DMACNTRL0, ENDMA|_8BIT);
2264                         while(fifodata>0) {
2265                                 int data;
2266                                 data=GETPORT(DATAPORT);
2267                                 DPRINTK(debug_datai, DEBUG_LEAD "data=%02x\n", CMDINFO(CURRENT_SC), data);
2268                                 fifodata--;
2269                                 DATA_LEN++;
2270                         }
2271                         SETPORT(DMACNTRL0, ENDMA|_8BIT);
2272                 }
2273         }
2274
2275         if(TESTLO(DMASTAT, INTSTAT) ||
2276            TESTLO(DMASTAT, DFIFOEMP) ||
2277            TESTLO(SSTAT2, SEMPTY) ||
2278            GETPORT(FIFOSTAT)>0) {
2279                 /*
2280                  * something went wrong, if there's something left in the fifos
2281                  * or the phase didn't change
2282                  */
2283                 printk(ERR_LEAD "fifos should be empty and phase should have changed\n", CMDINFO(CURRENT_SC));
2284                 disp_ports(shpnt);
2285         }
2286
2287         if(DATA_LEN!=GETSTCNT()) {
2288                 printk(ERR_LEAD
2289                        "manual transfer count differs from automatic (count=%d;stcnt=%d;diff=%d;fifostat=%d)",
2290                        CMDINFO(CURRENT_SC), DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN, GETPORT(FIFOSTAT));
2291                 disp_ports(shpnt);
2292                 mdelay(10000);
2293         }
2294 }
2295
2296 static void datai_end(struct Scsi_Host *shpnt)
2297 {
2298         CURRENT_SC->resid -= GETSTCNT();
2299
2300         DPRINTK(debug_datai,
2301                 DEBUG_LEAD "datai_end: request_bufflen=%d resid=%d stcnt=%d\n",
2302                 CMDINFO(CURRENT_SC), CURRENT_SC->request_bufflen, CURRENT_SC->resid, GETSTCNT());
2303
2304         SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2305         SETPORT(DMACNTRL0, 0);
2306 }
2307
2308 /*
2309  * data out phase
2310  *
2311  */
2312 static void datao_init(struct Scsi_Host *shpnt)
2313 {
2314         SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO);
2315         SETPORT(DMACNTRL0, WRITE_READ | ENDMA);
2316
2317         SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2318         SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
2319
2320         SETPORT(SIMODE0, 0);
2321         SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE );
2322
2323         DATA_LEN = CURRENT_SC->resid;
2324
2325         DPRINTK(debug_datao,
2326                 DEBUG_LEAD "datao_init: request_bufflen=%d; resid=%d\n",
2327                 CMDINFO(CURRENT_SC), CURRENT_SC->request_bufflen, CURRENT_SC->resid);
2328 }
2329
2330 static void datao_run(struct Scsi_Host *shpnt)
2331 {
2332         unsigned long the_time;
2333         int data_count;
2334
2335         /* until phase changes or all data sent */
2336         while(TESTLO(DMASTAT, INTSTAT) && CURRENT_SC->SCp.this_residual>0) {
2337                 data_count = 128;
2338                 if(data_count > CURRENT_SC->SCp.this_residual)
2339                         data_count=CURRENT_SC->SCp.this_residual;
2340
2341                 if(TESTLO(DMASTAT, DFIFOEMP)) {
2342                         printk(ERR_LEAD "datao fifo not empty (%d)", CMDINFO(CURRENT_SC), GETPORT(FIFOSTAT));
2343                         disp_ports(shpnt);
2344                         break;
2345                 }
2346
2347                 if(data_count & 1) {
2348                         SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT);
2349                         SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++);
2350                         CURRENT_SC->SCp.this_residual--;
2351                         CURRENT_SC->resid--;
2352                         SETPORT(DMACNTRL0,WRITE_READ|ENDMA);
2353                 }
2354
2355                 if(data_count > 1) {
2356                         data_count >>= 1;
2357                         outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2358                         CURRENT_SC->SCp.ptr           += 2 * data_count;
2359                         CURRENT_SC->SCp.this_residual -= 2 * data_count;
2360                         CURRENT_SC->resid             -= 2 * data_count;
2361                 }
2362
2363                 if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
2364                         /* advance to next buffer */
2365                         CURRENT_SC->SCp.buffers_residual--;
2366                         CURRENT_SC->SCp.buffer++;
2367                         CURRENT_SC->SCp.ptr           = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2368                         CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2369                 }
2370
2371                 the_time=jiffies + 100*HZ;
2372                 while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time))
2373                         barrier();
2374
2375                 if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) {
2376                         printk(ERR_LEAD "dataout timeout", CMDINFO(CURRENT_SC));
2377                         disp_ports(shpnt);
2378                         break;
2379                 }
2380         }
2381 }
2382
2383 static void datao_end(struct Scsi_Host *shpnt)
2384 {
2385         if(TESTLO(DMASTAT, DFIFOEMP)) {
2386                 int data_count = (DATA_LEN - CURRENT_SC->resid) - GETSTCNT();
2387
2388                 DPRINTK(debug_datao, DEBUG_LEAD "datao: %d bytes to resend (%d written, %d transferred)\n",
2389                         CMDINFO(CURRENT_SC),
2390                         data_count,
2391                         DATA_LEN-CURRENT_SC->resid,
2392                         GETSTCNT());
2393
2394                 CURRENT_SC->resid += data_count;
2395
2396                 if(CURRENT_SC->use_sg) {
2397                         data_count -= CURRENT_SC->SCp.ptr - SG_ADDRESS(CURRENT_SC->SCp.buffer);
2398                         while(data_count>0) {
2399                                 CURRENT_SC->SCp.buffer--;
2400                                 CURRENT_SC->SCp.buffers_residual++;
2401                                 data_count -= CURRENT_SC->SCp.buffer->length;
2402                         }
2403                         CURRENT_SC->SCp.ptr           = SG_ADDRESS(CURRENT_SC->SCp.buffer) - data_count;
2404                         CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length + data_count;
2405                 } else {
2406                         CURRENT_SC->SCp.ptr           -= data_count;
2407                         CURRENT_SC->SCp.this_residual += data_count;
2408                 }
2409         }
2410
2411         DPRINTK(debug_datao, DEBUG_LEAD "datao_end: request_bufflen=%d; resid=%d; stcnt=%d\n",
2412                 CMDINFO(CURRENT_SC),
2413                 CURRENT_SC->request_bufflen,
2414                 CURRENT_SC->resid,
2415                 GETSTCNT());
2416
2417         SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
2418         SETPORT(SXFRCTL0, CH1);
2419
2420         SETPORT(DMACNTRL0, 0);
2421 }
2422
2423 /*
2424  * figure out what state we're in
2425  *
2426  */
2427 static int update_state(struct Scsi_Host *shpnt)
2428 {
2429         int dataphase=0;
2430         unsigned int stat0 = GETPORT(SSTAT0);
2431         unsigned int stat1 = GETPORT(SSTAT1);
2432
2433         PREVSTATE = STATE;
2434         STATE=unknown;
2435
2436         if(stat1 & SCSIRSTI) {
2437                 STATE=rsti;
2438                 SETPORT(SCSISEQ,0);
2439                 SETPORT(SSTAT1,SCSIRSTI);
2440         } else if(stat0 & SELDI && PREVSTATE==busfree) {
2441                 STATE=seldi;
2442         } else if(stat0 & SELDO && CURRENT_SC && (CURRENT_SC->SCp.phase & selecting)) {
2443                 STATE=seldo;
2444         } else if(stat1 & SELTO) {
2445                 STATE=selto;
2446         } else if(stat1 & BUSFREE) {
2447                 STATE=busfree;
2448                 SETPORT(SSTAT1,BUSFREE);
2449         } else if(stat1 & SCSIPERR) {
2450                 STATE=parerr;
2451                 SETPORT(SSTAT1,SCSIPERR);
2452         } else if(stat1 & REQINIT) {
2453                 switch(GETPORT(SCSISIG) & P_MASK) {
2454                 case P_MSGI:    STATE=msgi;     break;
2455                 case P_MSGO:    STATE=msgo;     break;
2456                 case P_DATAO:   STATE=datao;    break;
2457                 case P_DATAI:   STATE=datai;    break;
2458                 case P_STATUS:  STATE=status;   break;
2459                 case P_CMD:     STATE=cmd;      break;
2460                 }
2461                 dataphase=1;
2462         }
2463
2464         if((stat0 & SELDI) && STATE!=seldi && !dataphase) {
2465                 printk(INFO_LEAD "reselection missed?", CMDINFO(CURRENT_SC));
2466                 disp_ports(shpnt);
2467         }
2468
2469         if(STATE!=PREVSTATE) {
2470                 LASTSTATE=PREVSTATE;
2471         }
2472
2473         return dataphase;
2474 }
2475
2476 /*
2477  * handle parity error
2478  *
2479  * FIXME: in which phase?
2480  *
2481  */
2482 static void parerr_run(struct Scsi_Host *shpnt)
2483 {
2484         printk(ERR_LEAD "parity error\n", CMDINFO(CURRENT_SC));
2485         done(shpnt, DID_PARITY << 16);
2486 }
2487
2488 /*
2489  * handle reset in
2490  *
2491  */
2492 static void rsti_run(struct Scsi_Host *shpnt)
2493 {
2494         Scsi_Cmnd *ptr;
2495
2496         printk(KERN_NOTICE "aha152x%d: scsi reset in\n", HOSTNO);
2497
2498         ptr=DISCONNECTED_SC;
2499         while(ptr) {
2500                 Scsi_Cmnd *next = SCNEXT(ptr);
2501
2502                 if (!ptr->device->soft_reset) {
2503                         remove_SC(&DISCONNECTED_SC, ptr);
2504
2505                         kfree(ptr->host_scribble);
2506                         ptr->host_scribble=NULL;
2507
2508                         ptr->result =  DID_RESET << 16;
2509                         ptr->scsi_done(ptr);
2510                 }
2511
2512                 ptr = next;
2513         }
2514
2515         if(CURRENT_SC && !CURRENT_SC->device->soft_reset)
2516                 done(shpnt, DID_RESET << 16 );
2517 }
2518
2519
2520 /*
2521  * bottom-half handler
2522  *
2523  */
2524 static void is_complete(struct Scsi_Host *shpnt)
2525 {
2526         int dataphase;
2527         unsigned long flags;
2528         int pending;
2529
2530         DO_LOCK(flags);
2531         if(HOSTDATA(shpnt)->in_intr) {
2532                 DO_UNLOCK(flags);
2533                 /* aha152x_error never returns.. */
2534                 aha152x_error(shpnt, "bottom-half already running!?");
2535         }
2536         HOSTDATA(shpnt)->in_intr++;
2537
2538         /*
2539          * loop while there are interrupt conditions pending
2540          *
2541          */
2542         do {
2543                 unsigned long start = jiffies;
2544                 DO_UNLOCK(flags);
2545
2546                 dataphase=update_state(shpnt);
2547
2548                 DPRINTK(debug_phases, LEAD "start %s %s(%s)\n", CMDINFO(CURRENT_SC), states[STATE].name, states[PREVSTATE].name, states[LASTSTATE].name);
2549
2550                 /*
2551                  * end previous state
2552                  *
2553                  */
2554                 if(PREVSTATE!=STATE && states[PREVSTATE].end)
2555                         states[PREVSTATE].end(shpnt);
2556
2557                 /*
2558                  * disable SPIO mode if previous phase used it
2559                  * and this one doesn't
2560                  *
2561                  */
2562                 if(states[PREVSTATE].spio && !states[STATE].spio) {
2563                         SETPORT(SXFRCTL0, CH1);
2564                         SETPORT(DMACNTRL0, 0);
2565                         if(CURRENT_SC)
2566                                 CURRENT_SC->SCp.phase &= ~spiordy;
2567                 }
2568
2569                 /*
2570                  * accept current dataphase phase
2571                  *
2572                  */
2573                 if(dataphase) {
2574                         SETPORT(SSTAT0, REQINIT);
2575                         SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK);
2576                         SETPORT(SSTAT1, PHASECHG);
2577                 }
2578
2579                 /*
2580                  * enable SPIO mode if previous didn't use it
2581                  * and this one does
2582                  *
2583                  */
2584                 if(!states[PREVSTATE].spio && states[STATE].spio) {
2585                         SETPORT(DMACNTRL0, 0);
2586                         SETPORT(SXFRCTL0, CH1|SPIOEN);
2587                         if(CURRENT_SC)
2588                                 CURRENT_SC->SCp.phase |= spiordy;
2589                 }
2590
2591                 /*
2592                  * initialize for new state
2593                  *
2594                  */
2595                 if(PREVSTATE!=STATE && states[STATE].init)
2596                         states[STATE].init(shpnt);
2597
2598                 /*
2599                  * handle current state
2600                  *
2601                  */
2602                 if(states[STATE].run)
2603                         states[STATE].run(shpnt);
2604                 else
2605                         printk(ERR_LEAD "unexpected state (%x)\n", CMDINFO(CURRENT_SC), STATE);
2606
2607                 /*
2608                  * setup controller to interrupt on
2609                  * the next expected condition and
2610                  * loop if it's already there
2611                  *
2612                  */
2613                 DO_LOCK(flags);
2614                 pending=setup_expected_interrupts(shpnt);
2615 #if defined(AHA152X_STAT)
2616                 HOSTDATA(shpnt)->count[STATE]++;
2617                 if(PREVSTATE!=STATE)
2618                         HOSTDATA(shpnt)->count_trans[STATE]++;
2619                 HOSTDATA(shpnt)->time[STATE] += jiffies-start;
2620 #endif
2621
2622                 DPRINTK(debug_phases, LEAD "end %s %s(%s)\n", CMDINFO(CURRENT_SC), states[STATE].name, states[PREVSTATE].name, states[LASTSTATE].name);
2623         } while(pending);
2624
2625         /*
2626          * enable interrupts and leave bottom-half
2627          *
2628          */
2629         HOSTDATA(shpnt)->in_intr--;
2630         SETBITS(DMACNTRL0, INTEN);
2631         DO_UNLOCK(flags);
2632 }
2633
2634
2635 /*
2636  * Dump the current driver status and panic
2637  */
2638 static void aha152x_error(struct Scsi_Host *shpnt, char *msg)
2639 {
2640         printk(KERN_EMERG "\naha152x%d: %s\n", HOSTNO, msg);
2641         show_queues(shpnt);
2642         panic("aha152x panic\n");
2643 }
2644
2645 /*
2646  * Display registers of AIC-6260
2647  */
2648 static void disp_ports(struct Scsi_Host *shpnt)
2649 {
2650 #if defined(AHA152X_DEBUG)
2651         int s;
2652
2653         printk("\n%s: %s(%s) ",
2654                 CURRENT_SC ? "busy" : "waiting",
2655                 states[STATE].name,
2656                 states[PREVSTATE].name);
2657
2658         s = GETPORT(SCSISEQ);
2659         printk("SCSISEQ( ");
2660         if (s & TEMODEO)
2661                 printk("TARGET MODE ");
2662         if (s & ENSELO)
2663                 printk("SELO ");
2664         if (s & ENSELI)
2665                 printk("SELI ");
2666         if (s & ENRESELI)
2667                 printk("RESELI ");
2668         if (s & ENAUTOATNO)
2669                 printk("AUTOATNO ");
2670         if (s & ENAUTOATNI)
2671                 printk("AUTOATNI ");
2672         if (s & ENAUTOATNP)
2673                 printk("AUTOATNP ");
2674         if (s & SCSIRSTO)
2675                 printk("SCSIRSTO ");
2676         printk(");");
2677
2678         printk(" SCSISIG(");
2679         s = GETPORT(SCSISIG);
2680         switch (s & P_MASK) {
2681         case P_DATAO:
2682                 printk("DATA OUT");
2683                 break;
2684         case P_DATAI:
2685                 printk("DATA IN");
2686                 break;
2687         case P_CMD:
2688                 printk("COMMAND");
2689                 break;
2690         case P_STATUS:
2691                 printk("STATUS");
2692                 break;
2693         case P_MSGO:
2694                 printk("MESSAGE OUT");
2695                 break;
2696         case P_MSGI:
2697                 printk("MESSAGE IN");
2698                 break;
2699         default:
2700                 printk("*invalid*");
2701                 break;
2702         }
2703
2704         printk("); ");
2705
2706         printk("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");
2707
2708         printk("SSTAT( ");
2709         s = GETPORT(SSTAT0);
2710         if (s & TARGET)
2711                 printk("TARGET ");
2712         if (s & SELDO)
2713                 printk("SELDO ");
2714         if (s & SELDI)
2715                 printk("SELDI ");
2716         if (s & SELINGO)
2717                 printk("SELINGO ");
2718         if (s & SWRAP)
2719                 printk("SWRAP ");
2720         if (s & SDONE)
2721                 printk("SDONE ");
2722         if (s & SPIORDY)
2723                 printk("SPIORDY ");
2724         if (s & DMADONE)
2725                 printk("DMADONE ");
2726
2727         s = GETPORT(SSTAT1);
2728         if (s & SELTO)
2729                 printk("SELTO ");
2730         if (s & ATNTARG)
2731                 printk("ATNTARG ");
2732         if (s & SCSIRSTI)
2733                 printk("SCSIRSTI ");
2734         if (s & PHASEMIS)
2735                 printk("PHASEMIS ");
2736         if (s & BUSFREE)
2737                 printk("BUSFREE ");
2738         if (s & SCSIPERR)
2739                 printk("SCSIPERR ");
2740         if (s & PHASECHG)
2741                 printk("PHASECHG ");
2742         if (s & REQINIT)
2743                 printk("REQINIT ");
2744         printk("); ");
2745
2746
2747         printk("SSTAT( ");
2748
2749         s = GETPORT(SSTAT0) & GETPORT(SIMODE0);
2750
2751         if (s & TARGET)
2752                 printk("TARGET ");
2753         if (s & SELDO)
2754                 printk("SELDO ");
2755         if (s & SELDI)
2756                 printk("SELDI ");
2757         if (s & SELINGO)
2758                 printk("SELINGO ");
2759         if (s & SWRAP)
2760                 printk("SWRAP ");
2761         if (s & SDONE)
2762                 printk("SDONE ");
2763         if (s & SPIORDY)
2764                 printk("SPIORDY ");
2765         if (s & DMADONE)
2766                 printk("DMADONE ");
2767
2768         s = GETPORT(SSTAT1) & GETPORT(SIMODE1);
2769
2770         if (s & SELTO)
2771                 printk("SELTO ");
2772         if (s & ATNTARG)
2773                 printk("ATNTARG ");
2774         if (s & SCSIRSTI)
2775                 printk("SCSIRSTI ");
2776         if (s & PHASEMIS)
2777                 printk("PHASEMIS ");
2778         if (s & BUSFREE)
2779                 printk("BUSFREE ");
2780         if (s & SCSIPERR)
2781                 printk("SCSIPERR ");
2782         if (s & PHASECHG)
2783                 printk("PHASECHG ");
2784         if (s & REQINIT)
2785                 printk("REQINIT ");
2786         printk("); ");
2787
2788         printk("SXFRCTL0( ");
2789
2790         s = GETPORT(SXFRCTL0);
2791         if (s & SCSIEN)
2792                 printk("SCSIEN ");
2793         if (s & DMAEN)
2794                 printk("DMAEN ");
2795         if (s & CH1)
2796                 printk("CH1 ");
2797         if (s & CLRSTCNT)
2798                 printk("CLRSTCNT ");
2799         if (s & SPIOEN)
2800                 printk("SPIOEN ");
2801         if (s & CLRCH1)
2802                 printk("CLRCH1 ");
2803         printk("); ");
2804
2805         printk("SIGNAL( ");
2806
2807         s = GETPORT(SCSISIG);
2808         if (s & SIG_ATNI)
2809                 printk("ATNI ");
2810         if (s & SIG_SELI)
2811                 printk("SELI ");
2812         if (s & SIG_BSYI)
2813                 printk("BSYI ");
2814         if (s & SIG_REQI)
2815                 printk("REQI ");
2816         if (s & SIG_ACKI)
2817                 printk("ACKI ");
2818         printk("); ");
2819
2820         printk("SELID (%02x), ", GETPORT(SELID));
2821
2822         printk("STCNT (%d), ", GETSTCNT());
2823
2824         printk("SSTAT2( ");
2825
2826         s = GETPORT(SSTAT2);
2827         if (s & SOFFSET)
2828                 printk("SOFFSET ");
2829         if (s & SEMPTY)
2830                 printk("SEMPTY ");
2831         if (s & SFULL)
2832                 printk("SFULL ");
2833         printk("); SFCNT (%d); ", s & (SFULL | SFCNT));
2834
2835         s = GETPORT(SSTAT3);
2836         printk("SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);
2837
2838         printk("SSTAT4( ");
2839         s = GETPORT(SSTAT4);
2840         if (s & SYNCERR)
2841                 printk("SYNCERR ");
2842         if (s & FWERR)
2843                 printk("FWERR ");
2844         if (s & FRERR)
2845                 printk("FRERR ");
2846         printk("); ");
2847
2848         printk("DMACNTRL0( ");
2849         s = GETPORT(DMACNTRL0);
2850         printk("%s ", s & _8BIT ? "8BIT" : "16BIT");
2851         printk("%s ", s & DMA ? "DMA" : "PIO");
2852         printk("%s ", s & WRITE_READ ? "WRITE" : "READ");
2853         if (s & ENDMA)
2854                 printk("ENDMA ");
2855         if (s & INTEN)
2856                 printk("INTEN ");
2857         if (s & RSTFIFO)
2858                 printk("RSTFIFO ");
2859         if (s & SWINT)
2860                 printk("SWINT ");
2861         printk("); ");
2862
2863         printk("DMASTAT( ");
2864         s = GETPORT(DMASTAT);
2865         if (s & ATDONE)
2866                 printk("ATDONE ");
2867         if (s & WORDRDY)
2868                 printk("WORDRDY ");
2869         if (s & DFIFOFULL)
2870                 printk("DFIFOFULL ");
2871         if (s & DFIFOEMP)
2872                 printk("DFIFOEMP ");
2873         printk(")\n");
2874 #endif
2875 }
2876
2877 /*
2878  * display enabled interrupts
2879  */
2880 static void disp_enintr(struct Scsi_Host *shpnt)
2881 {
2882         int s;
2883
2884         printk(KERN_DEBUG "enabled interrupts ( ");
2885
2886         s = GETPORT(SIMODE0);
2887         if (s & ENSELDO)
2888                 printk("ENSELDO ");
2889         if (s & ENSELDI)
2890                 printk("ENSELDI ");
2891         if (s & ENSELINGO)
2892                 printk("ENSELINGO ");
2893         if (s & ENSWRAP)
2894                 printk("ENSWRAP ");
2895         if (s & ENSDONE)
2896                 printk("ENSDONE ");
2897         if (s & ENSPIORDY)
2898                 printk("ENSPIORDY ");
2899         if (s & ENDMADONE)
2900                 printk("ENDMADONE ");
2901
2902         s = GETPORT(SIMODE1);
2903         if (s & ENSELTIMO)
2904                 printk("ENSELTIMO ");
2905         if (s & ENATNTARG)
2906                 printk("ENATNTARG ");
2907         if (s & ENPHASEMIS)
2908                 printk("ENPHASEMIS ");
2909         if (s & ENBUSFREE)
2910                 printk("ENBUSFREE ");
2911         if (s & ENSCSIPERR)
2912                 printk("ENSCSIPERR ");
2913         if (s & ENPHASECHG)
2914                 printk("ENPHASECHG ");
2915         if (s & ENREQINIT)
2916                 printk("ENREQINIT ");
2917         printk(")\n");
2918 }
2919
2920 /*
2921  * Show the command data of a command
2922  */
2923 static void show_command(Scsi_Cmnd *ptr)
2924 {
2925         printk(KERN_DEBUG "0x%08x: target=%d; lun=%d; cmnd=(",
2926                (unsigned int) ptr, ptr->device->id, ptr->device->lun);
2927
2928         print_command(ptr->cmnd);
2929
2930         printk(KERN_DEBUG "); request_bufflen=%d; resid=%d; phase |",
2931                ptr->request_bufflen, ptr->resid);
2932
2933         if (ptr->SCp.phase & not_issued)
2934                 printk("not issued|");
2935         if (ptr->SCp.phase & selecting)
2936                 printk("selecting|");
2937         if (ptr->SCp.phase & identified)
2938                 printk("identified|");
2939         if (ptr->SCp.phase & disconnected)
2940                 printk("disconnected|");
2941         if (ptr->SCp.phase & completed)
2942                 printk("completed|");
2943         if (ptr->SCp.phase & spiordy)
2944                 printk("spiordy|");
2945         if (ptr->SCp.phase & syncneg)
2946                 printk("syncneg|");
2947         if (ptr->SCp.phase & aborted)
2948                 printk("aborted|");
2949         if (ptr->SCp.phase & resetted)
2950                 printk("resetted|");
2951         if( SCDATA(ptr) ) {
2952                 printk("; next=0x%p\n", SCNEXT(ptr));
2953         } else {
2954                 printk("; next=(host scribble NULL)\n");
2955         }
2956 }
2957
2958 /*
2959  * Dump the queued data
2960  */
2961 static void show_queues(struct Scsi_Host *shpnt)
2962 {
2963         Scsi_Cmnd *ptr;
2964         unsigned long flags;
2965
2966         DO_LOCK(flags);
2967         printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n");
2968         for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
2969                 show_command(ptr);
2970         DO_UNLOCK(flags);
2971
2972         printk(KERN_DEBUG "current_SC:\n");
2973         if (CURRENT_SC)
2974                 show_command(CURRENT_SC);
2975         else
2976                 printk(KERN_DEBUG "none\n");
2977
2978         printk(KERN_DEBUG "disconnected_SC:\n");
2979         for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL)
2980                 show_command(ptr);
2981
2982         disp_ports(shpnt);
2983         disp_enintr(shpnt);
2984 }
2985
2986 #undef SPRINTF
2987 #define SPRINTF(args...) pos += sprintf(pos, ## args)
2988
2989 static int get_command(char *pos, Scsi_Cmnd * ptr)
2990 {
2991         char *start = pos;
2992         int i;
2993
2994         SPRINTF("0x%08x: target=%d; lun=%d; cmnd=( ",
2995                 (unsigned int) ptr, ptr->device->id, ptr->device->lun);
2996
2997         for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++)
2998                 SPRINTF("0x%02x ", ptr->cmnd[i]);
2999
3000         SPRINTF("); resid=%d; residual=%d; buffers=%d; phase |",
3001                 ptr->resid, ptr->SCp.this_residual, ptr->SCp.buffers_residual);
3002
3003         if (ptr->SCp.phase & not_issued)
3004                 SPRINTF("not issued|");
3005         if (ptr->SCp.phase & selecting)
3006                 SPRINTF("selecting|");
3007         if (ptr->SCp.phase & disconnected)
3008                 SPRINTF("disconnected|");
3009         if (ptr->SCp.phase & aborted)
3010                 SPRINTF("aborted|");
3011         if (ptr->SCp.phase & identified)
3012                 SPRINTF("identified|");
3013         if (ptr->SCp.phase & completed)
3014                 SPRINTF("completed|");
3015         if (ptr->SCp.phase & spiordy)
3016                 SPRINTF("spiordy|");
3017         if (ptr->SCp.phase & syncneg)
3018                 SPRINTF("syncneg|");
3019         SPRINTF("; next=0x%p\n", SCNEXT(ptr));
3020
3021         return (pos - start);
3022 }
3023
3024 static int get_ports(struct Scsi_Host *shpnt, char *pos)
3025 {
3026         char *start = pos;
3027         int s;
3028
3029         SPRINTF("\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name);
3030
3031         s = GETPORT(SCSISEQ);
3032         SPRINTF("SCSISEQ( ");
3033         if (s & TEMODEO)
3034                 SPRINTF("TARGET MODE ");
3035         if (s & ENSELO)
3036                 SPRINTF("SELO ");
3037         if (s & ENSELI)
3038                 SPRINTF("SELI ");
3039         if (s & ENRESELI)
3040                 SPRINTF("RESELI ");
3041         if (s & ENAUTOATNO)
3042                 SPRINTF("AUTOATNO ");
3043         if (s & ENAUTOATNI)
3044                 SPRINTF("AUTOATNI ");
3045         if (s & ENAUTOATNP)
3046                 SPRINTF("AUTOATNP ");
3047         if (s & SCSIRSTO)
3048                 SPRINTF("SCSIRSTO ");
3049         SPRINTF(");");
3050
3051         SPRINTF(" SCSISIG(");
3052         s = GETPORT(SCSISIG);
3053         switch (s & P_MASK) {
3054         case P_DATAO:
3055                 SPRINTF("DATA OUT");
3056                 break;
3057         case P_DATAI:
3058                 SPRINTF("DATA IN");
3059                 break;
3060         case P_CMD:
3061                 SPRINTF("COMMAND");
3062                 break;
3063         case P_STATUS:
3064                 SPRINTF("STATUS");
3065                 break;
3066         case P_MSGO:
3067                 SPRINTF("MESSAGE OUT");
3068                 break;
3069         case P_MSGI:
3070                 SPRINTF("MESSAGE IN");
3071                 break;
3072         default:
3073                 SPRINTF("*invalid*");
3074                 break;
3075         }
3076
3077         SPRINTF("); ");
3078
3079         SPRINTF("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");
3080
3081         SPRINTF("SSTAT( ");
3082         s = GETPORT(SSTAT0);
3083         if (s & TARGET)
3084                 SPRINTF("TARGET ");
3085         if (s & SELDO)
3086                 SPRINTF("SELDO ");
3087         if (s & SELDI)
3088                 SPRINTF("SELDI ");
3089         if (s & SELINGO)
3090                 SPRINTF("SELINGO ");
3091         if (s & SWRAP)
3092                 SPRINTF("SWRAP ");
3093         if (s & SDONE)
3094                 SPRINTF("SDONE ");
3095         if (s & SPIORDY)
3096                 SPRINTF("SPIORDY ");
3097         if (s & DMADONE)
3098                 SPRINTF("DMADONE ");
3099
3100         s = GETPORT(SSTAT1);
3101         if (s & SELTO)
3102                 SPRINTF("SELTO ");
3103         if (s & ATNTARG)
3104                 SPRINTF("ATNTARG ");
3105         if (s & SCSIRSTI)
3106                 SPRINTF("SCSIRSTI ");
3107         if (s & PHASEMIS)
3108                 SPRINTF("PHASEMIS ");
3109         if (s & BUSFREE)
3110                 SPRINTF("BUSFREE ");
3111         if (s & SCSIPERR)
3112                 SPRINTF("SCSIPERR ");
3113         if (s & PHASECHG)
3114                 SPRINTF("PHASECHG ");
3115         if (s & REQINIT)
3116                 SPRINTF("REQINIT ");
3117         SPRINTF("); ");
3118
3119
3120         SPRINTF("SSTAT( ");
3121
3122         s = GETPORT(SSTAT0) & GETPORT(SIMODE0);
3123
3124         if (s & TARGET)
3125                 SPRINTF("TARGET ");
3126         if (s & SELDO)
3127                 SPRINTF("SELDO ");
3128         if (s & SELDI)
3129                 SPRINTF("SELDI ");
3130         if (s & SELINGO)
3131                 SPRINTF("SELINGO ");
3132         if (s & SWRAP)
3133                 SPRINTF("SWRAP ");
3134         if (s & SDONE)
3135                 SPRINTF("SDONE ");
3136         if (s & SPIORDY)
3137                 SPRINTF("SPIORDY ");
3138         if (s & DMADONE)
3139                 SPRINTF("DMADONE ");
3140
3141         s = GETPORT(SSTAT1) & GETPORT(SIMODE1);
3142
3143         if (s & SELTO)
3144                 SPRINTF("SELTO ");
3145         if (s & ATNTARG)
3146                 SPRINTF("ATNTARG ");
3147         if (s & SCSIRSTI)
3148                 SPRINTF("SCSIRSTI ");
3149         if (s & PHASEMIS)
3150                 SPRINTF("PHASEMIS ");
3151         if (s & BUSFREE)
3152                 SPRINTF("BUSFREE ");
3153         if (s & SCSIPERR)
3154                 SPRINTF("SCSIPERR ");
3155         if (s & PHASECHG)
3156                 SPRINTF("PHASECHG ");
3157         if (s & REQINIT)
3158                 SPRINTF("REQINIT ");
3159         SPRINTF("); ");
3160
3161         SPRINTF("SXFRCTL0( ");
3162
3163         s = GETPORT(SXFRCTL0);
3164         if (s & SCSIEN)
3165                 SPRINTF("SCSIEN ");
3166         if (s & DMAEN)
3167                 SPRINTF("DMAEN ");
3168         if (s & CH1)
3169                 SPRINTF("CH1 ");
3170         if (s & CLRSTCNT)
3171                 SPRINTF("CLRSTCNT ");
3172         if (s & SPIOEN)
3173                 SPRINTF("SPIOEN ");
3174         if (s & CLRCH1)
3175                 SPRINTF("CLRCH1 ");
3176         SPRINTF("); ");
3177
3178         SPRINTF("SIGNAL( ");
3179
3180         s = GETPORT(SCSISIG);
3181         if (s & SIG_ATNI)
3182                 SPRINTF("ATNI ");
3183         if (s & SIG_SELI)
3184                 SPRINTF("SELI ");
3185         if (s & SIG_BSYI)
3186                 SPRINTF("BSYI ");
3187         if (s & SIG_REQI)
3188                 SPRINTF("REQI ");
3189         if (s & SIG_ACKI)
3190                 SPRINTF("ACKI ");
3191         SPRINTF("); ");
3192
3193         SPRINTF("SELID(%02x), ", GETPORT(SELID));
3194
3195         SPRINTF("STCNT(%d), ", GETSTCNT());
3196
3197         SPRINTF("SSTAT2( ");
3198
3199         s = GETPORT(SSTAT2);
3200         if (s & SOFFSET)
3201                 SPRINTF("SOFFSET ");
3202         if (s & SEMPTY)
3203                 SPRINTF("SEMPTY ");
3204         if (s & SFULL)
3205                 SPRINTF("SFULL ");
3206         SPRINTF("); SFCNT (%d); ", s & (SFULL | SFCNT));
3207
3208         s = GETPORT(SSTAT3);
3209         SPRINTF("SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);
3210
3211         SPRINTF("SSTAT4( ");
3212         s = GETPORT(SSTAT4);
3213         if (s & SYNCERR)
3214                 SPRINTF("SYNCERR ");
3215         if (s & FWERR)
3216                 SPRINTF("FWERR ");
3217         if (s & FRERR)
3218                 SPRINTF("FRERR ");
3219         SPRINTF("); ");
3220
3221         SPRINTF("DMACNTRL0( ");
3222         s = GETPORT(DMACNTRL0);
3223         SPRINTF("%s ", s & _8BIT ? "8BIT" : "16BIT");
3224         SPRINTF("%s ", s & DMA ? "DMA" : "PIO");
3225         SPRINTF("%s ", s & WRITE_READ ? "WRITE" : "READ");
3226         if (s & ENDMA)
3227                 SPRINTF("ENDMA ");
3228         if (s & INTEN)
3229                 SPRINTF("INTEN ");
3230         if (s & RSTFIFO)
3231                 SPRINTF("RSTFIFO ");
3232         if (s & SWINT)
3233                 SPRINTF("SWINT ");
3234         SPRINTF("); ");
3235
3236         SPRINTF("DMASTAT( ");
3237         s = GETPORT(DMASTAT);
3238         if (s & ATDONE)
3239                 SPRINTF("ATDONE ");
3240         if (s & WORDRDY)
3241                 SPRINTF("WORDRDY ");
3242         if (s & DFIFOFULL)
3243                 SPRINTF("DFIFOFULL ");
3244         if (s & DFIFOEMP)
3245                 SPRINTF("DFIFOEMP ");
3246         SPRINTF(")\n");
3247
3248         SPRINTF("enabled interrupts( ");
3249
3250         s = GETPORT(SIMODE0);
3251         if (s & ENSELDO)
3252                 SPRINTF("ENSELDO ");
3253         if (s & ENSELDI)
3254                 SPRINTF("ENSELDI ");
3255         if (s & ENSELINGO)
3256                 SPRINTF("ENSELINGO ");
3257         if (s & ENSWRAP)
3258                 SPRINTF("ENSWRAP ");
3259         if (s & ENSDONE)
3260                 SPRINTF("ENSDONE ");
3261         if (s & ENSPIORDY)
3262                 SPRINTF("ENSPIORDY ");
3263         if (s & ENDMADONE)
3264                 SPRINTF("ENDMADONE ");
3265
3266         s = GETPORT(SIMODE1);
3267         if (s & ENSELTIMO)
3268                 SPRINTF("ENSELTIMO ");
3269         if (s & ENATNTARG)
3270                 SPRINTF("ENATNTARG ");
3271         if (s & ENPHASEMIS)
3272                 SPRINTF("ENPHASEMIS ");
3273         if (s & ENBUSFREE)
3274                 SPRINTF("ENBUSFREE ");
3275         if (s & ENSCSIPERR)
3276                 SPRINTF("ENSCSIPERR ");
3277         if (s & ENPHASECHG)
3278                 SPRINTF("ENPHASECHG ");
3279         if (s & ENREQINIT)
3280                 SPRINTF("ENREQINIT ");
3281         SPRINTF(")\n");
3282
3283         return (pos - start);
3284 }
3285
3286 static int aha152x_set_info(char *buffer, int length, struct Scsi_Host *shpnt)
3287 {
3288         if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0)
3289                 return -EINVAL;
3290
3291 #if defined(AHA152X_DEBUG)
3292         if(length>14 && strncmp("debug ", buffer+8, 6)==0) {
3293                 int debug = HOSTDATA(shpnt)->debug;
3294
3295                 HOSTDATA(shpnt)->debug = simple_strtoul(buffer+14, NULL, 0);
3296
3297                 printk(KERN_INFO "aha152x%d: debugging options set to 0x%04x (were 0x%04x)\n", HOSTNO, HOSTDATA(shpnt)->debug, debug);
3298         } else
3299 #endif
3300 #if defined(AHA152X_STAT)
3301         if(length>13 && strncmp("reset", buffer+8, 5)==0) {
3302                 int i;
3303
3304                 HOSTDATA(shpnt)->total_commands=0;
3305                 HOSTDATA(shpnt)->disconnections=0;
3306                 HOSTDATA(shpnt)->busfree_without_any_action=0;
3307                 HOSTDATA(shpnt)->busfree_without_old_command=0;
3308                 HOSTDATA(shpnt)->busfree_without_new_command=0;
3309                 HOSTDATA(shpnt)->busfree_without_done_command=0;
3310                 HOSTDATA(shpnt)->busfree_with_check_condition=0;
3311                 for (i = idle; i<maxstate; i++) {
3312                         HOSTDATA(shpnt)->count[i]=0;
3313                         HOSTDATA(shpnt)->count_trans[i]=0;
3314                         HOSTDATA(shpnt)->time[i]=0;
3315                 }
3316
3317                 printk(KERN_INFO "aha152x%d: stats reseted.\n", HOSTNO);
3318
3319         } else
3320 #endif
3321         {
3322                 return -EINVAL;
3323         }
3324
3325
3326         return length;
3327 }
3328
3329 #undef SPRINTF
3330 #define SPRINTF(args...) \
3331         do { if(pos < buffer + length) pos += sprintf(pos, ## args); } while(0)
3332
3333 static int aha152x_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start,
3334                       off_t offset, int length, int inout)
3335 {
3336         int i;
3337         char *pos = buffer;
3338         Scsi_Cmnd *ptr;
3339         unsigned long flags;
3340         int thislength;
3341
3342         DPRINTK(debug_procinfo,
3343                KERN_DEBUG "aha152x_proc_info: buffer=%p offset=%ld length=%d hostno=%d inout=%d\n",
3344                buffer, offset, length, shpnt->host_no, inout);
3345
3346
3347         if (inout)
3348                 return aha152x_set_info(buffer, length, shpnt);
3349
3350         SPRINTF(AHA152X_REVID "\n");
3351
3352         SPRINTF("ioports 0x%04lx to 0x%04lx\n",
3353                 shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1);
3354         SPRINTF("interrupt 0x%02x\n", shpnt->irq);
3355         SPRINTF("disconnection/reconnection %s\n",
3356                 RECONNECT ? "enabled" : "disabled");
3357         SPRINTF("parity checking %s\n",
3358                 PARITY ? "enabled" : "disabled");
3359         SPRINTF("synchronous transfers %s\n",
3360                 SYNCHRONOUS ? "enabled" : "disabled");
3361         SPRINTF("%d commands currently queued\n", HOSTDATA(shpnt)->commands);
3362
3363         if(SYNCHRONOUS) {
3364                 SPRINTF("synchronously operating targets (tick=50 ns):\n");
3365                 for (i = 0; i < 8; i++)
3366                         if (HOSTDATA(shpnt)->syncrate[i] & 0x7f)
3367                                 SPRINTF("target %d: period %dT/%dns; req/ack offset %d\n",
3368                                         i,
3369                                         (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2),
3370                                         (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50,
3371                                     HOSTDATA(shpnt)->syncrate[i] & 0x0f);
3372         }
3373 #if defined(AHA152X_DEBUG)
3374 #define PDEBUG(flags,txt) \
3375         if(HOSTDATA(shpnt)->debug & flags) SPRINTF("(%s) ", txt);
3376
3377         SPRINTF("enabled debugging options: ");
3378
3379         PDEBUG(debug_procinfo, "procinfo");
3380         PDEBUG(debug_queue, "queue");
3381         PDEBUG(debug_intr, "interrupt");
3382         PDEBUG(debug_selection, "selection");
3383         PDEBUG(debug_msgo, "message out");
3384         PDEBUG(debug_msgi, "message in");
3385         PDEBUG(debug_status, "status");
3386         PDEBUG(debug_cmd, "command");
3387         PDEBUG(debug_datai, "data in");
3388         PDEBUG(debug_datao, "data out");
3389         PDEBUG(debug_eh, "eh");
3390         PDEBUG(debug_locks, "locks");
3391         PDEBUG(debug_phases, "phases");
3392
3393         SPRINTF("\n");
3394 #endif
3395
3396         SPRINTF("\nqueue status:\n");
3397         DO_LOCK(flags);
3398         if (ISSUE_SC) {
3399                 SPRINTF("not yet issued commands:\n");
3400                 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
3401                         pos += get_command(pos, ptr);
3402         } else
3403                 SPRINTF("no not yet issued commands\n");
3404         DO_UNLOCK(flags);
3405
3406         if (CURRENT_SC) {
3407                 SPRINTF("current command:\n");
3408                 pos += get_command(pos, CURRENT_SC);
3409         } else
3410                 SPRINTF("no current command\n");
3411
3412         if (DISCONNECTED_SC) {
3413                 SPRINTF("disconnected commands:\n");
3414                 for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr))
3415                         pos += get_command(pos, ptr);
3416         } else
3417                 SPRINTF("no disconnected commands\n");
3418
3419         pos += get_ports(shpnt, pos);
3420
3421 #if defined(AHA152X_STAT)
3422         SPRINTF("statistics:\n"
3423                 "total commands:               %d\n"
3424                 "disconnections:               %d\n"
3425                 "busfree with check condition: %d\n"
3426                 "busfree without old command:  %d\n"
3427                 "busfree without new command:  %d\n"
3428                 "busfree without done command: %d\n"
3429                 "busfree without any action:   %d\n"
3430                 "state      "
3431                 "transitions  "
3432                 "count        "
3433                 "time\n",
3434                 HOSTDATA(shpnt)->total_commands,
3435                 HOSTDATA(shpnt)->disconnections,
3436                 HOSTDATA(shpnt)->busfree_with_check_condition,
3437                 HOSTDATA(shpnt)->busfree_without_old_command,
3438                 HOSTDATA(shpnt)->busfree_without_new_command,
3439                 HOSTDATA(shpnt)->busfree_without_done_command,
3440                 HOSTDATA(shpnt)->busfree_without_any_action);
3441         for(i=0; i<maxstate; i++) {
3442                 SPRINTF("%-10s %-12d %-12d %-12ld\n",
3443                         states[i].name,
3444                         HOSTDATA(shpnt)->count_trans[i],
3445                         HOSTDATA(shpnt)->count[i],
3446                         HOSTDATA(shpnt)->time[i]);
3447         }
3448 #endif
3449
3450         DPRINTK(debug_procinfo, KERN_DEBUG "aha152x_proc_info: pos=%p\n", pos);
3451
3452         thislength = pos - (buffer + offset);
3453         DPRINTK(debug_procinfo, KERN_DEBUG "aha152x_proc_info: length=%d thislength=%d\n", length, thislength);
3454
3455         if(thislength<0) {
3456                 DPRINTK(debug_procinfo, KERN_DEBUG "aha152x_proc_info: output too short\n");
3457                 *start = NULL;
3458                 return 0;
3459         }
3460
3461         thislength = thislength<length ? thislength : length;
3462
3463         DPRINTK(debug_procinfo, KERN_DEBUG "aha152x_proc_info: return %d\n", thislength);
3464
3465         *start = buffer + offset;
3466         return thislength < length ? thislength : length;
3467 }
3468
3469 static Scsi_Host_Template aha152x_driver_template = {
3470         .module                         = THIS_MODULE,
3471         .name                           = AHA152X_REVID,
3472         .proc_name                      = "aha152x",
3473         .proc_info                      = aha152x_proc_info,
3474         .queuecommand                   = aha152x_queue,
3475         .eh_abort_handler               = aha152x_abort,
3476         .eh_device_reset_handler        = aha152x_device_reset,
3477         .eh_bus_reset_handler           = aha152x_bus_reset,
3478         .eh_host_reset_handler          = aha152x_host_reset,
3479         .bios_param                     = aha152x_biosparam,
3480         .can_queue                      = 1,
3481         .this_id                        = 7,
3482         .sg_tablesize                   = SG_ALL,
3483         .cmd_per_lun                    = 1,
3484         .use_clustering                 = DISABLE_CLUSTERING,
3485 };
3486
3487 #if !defined(PCMCIA)
3488 static int setup_count;
3489 static struct aha152x_setup setup[2];
3490
3491 /* possible i/o addresses for the AIC-6260; default first */
3492 static unsigned short ports[] = { 0x340, 0x140 };
3493
3494 #if !defined(SKIP_BIOSTEST)
3495 /* possible locations for the Adaptec BIOS; defaults first */
3496 static unsigned int addresses[] =
3497 {
3498         0xdc000,                /* default first */
3499         0xc8000,
3500         0xcc000,
3501         0xd0000,
3502         0xd4000,
3503         0xd8000,
3504         0xe0000,
3505         0xeb800,                /* VTech Platinum SMP */
3506         0xf0000,
3507 };
3508
3509 /* signatures for various AIC-6[23]60 based controllers.
3510    The point in detecting signatures is to avoid useless and maybe
3511    harmful probes on ports. I'm not sure that all listed boards pass
3512    auto-configuration. For those which fail the BIOS signature is
3513    obsolete, because user intervention to supply the configuration is
3514    needed anyway.  May be an information whether or not the BIOS supports
3515    extended translation could be also useful here. */
3516 static struct signature {
3517         unsigned char *signature;
3518         int sig_offset;
3519         int sig_length;
3520 } signatures[] =
3521 {
3522         { "Adaptec AHA-1520 BIOS",      0x102e, 21 },
3523                 /* Adaptec 152x */
3524         { "Adaptec AHA-1520B",          0x000b, 17 },
3525                 /* Adaptec 152x rev B */
3526         { "Adaptec AHA-1520B",          0x0026, 17 },
3527                 /* Iomega Jaz Jet ISA (AIC6370Q) */
3528         { "Adaptec ASW-B626 BIOS",      0x1029, 21 },
3529                 /* on-board controller */
3530         { "Adaptec BIOS: ASW-B626",     0x000f, 22 },
3531                 /* on-board controller */
3532         { "Adaptec ASW-B626 S2",        0x2e6c, 19 },
3533                 /* on-board controller */
3534         { "Adaptec BIOS:AIC-6360",      0x000c, 21 },
3535                 /* on-board controller */
3536         { "ScsiPro SP-360 BIOS",        0x2873, 19 },
3537                 /* ScsiPro-Controller  */
3538         { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 },
3539                 /* Gigabyte Local-Bus-SCSI */
3540         { "Adaptec BIOS:AVA-282X",      0x000c, 21 },
3541                 /* Adaptec 282x */
3542         { "Adaptec IBM Dock II SCSI",   0x2edd, 24 },
3543                 /* IBM Thinkpad Dock II */
3544         { "Adaptec BIOS:AHA-1532P",     0x001c, 22 },
3545                 /* IBM Thinkpad Dock II SCSI */
3546         { "DTC3520A Host Adapter BIOS", 0x318a, 26 },
3547                 /* DTC 3520A ISA SCSI */
3548 };
3549 #endif /* !SKIP_BIOSTEST */
3550
3551 /*
3552  * Test, if port_base is valid.
3553  *
3554  */
3555 static int aha152x_porttest(int io_port)
3556 {
3557         int i;
3558
3559         SETPORT(io_port + O_DMACNTRL1, 0);      /* reset stack pointer */
3560         for (i = 0; i < 16; i++)
3561                 SETPORT(io_port + O_STACK, i);
3562
3563         SETPORT(io_port + O_DMACNTRL1, 0);      /* reset stack pointer */
3564         for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++)
3565                 ;
3566
3567         return (i == 16);
3568 }
3569
3570 static int tc1550_porttest(int io_port)
3571 {
3572         int i;
3573
3574         SETPORT(io_port + O_TC_DMACNTRL1, 0);   /* reset stack pointer */
3575         for (i = 0; i < 16; i++)
3576                 SETPORT(io_port + O_STACK, i);
3577
3578         SETPORT(io_port + O_TC_DMACNTRL1, 0);   /* reset stack pointer */
3579         for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++)
3580                 ;
3581
3582         return (i == 16);
3583 }
3584
3585
3586 static int checksetup(struct aha152x_setup *setup)
3587 {
3588         int i;
3589         for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++)
3590                 ;
3591
3592         if (i == ARRAY_SIZE(ports))
3593                 return 0;
3594
3595         if ( request_region(setup->io_port, IO_RANGE, "aha152x")==0 ) {
3596                 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port);
3597                 return 0;
3598         }
3599
3600         if( aha152x_porttest(setup->io_port) ) {
3601                 setup->tc1550=0;
3602         } else if( tc1550_porttest(setup->io_port) ) {
3603                 setup->tc1550=1;
3604         } else {
3605                 release_region(setup->io_port, IO_RANGE);
3606                 return 0;
3607         }
3608
3609         release_region(setup->io_port, IO_RANGE);
3610
3611         if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX))
3612                 return 0;
3613
3614         if ((setup->scsiid < 0) || (setup->scsiid > 7))
3615                 return 0;
3616
3617         if ((setup->reconnect < 0) || (setup->reconnect > 1))
3618                 return 0;
3619
3620         if ((setup->parity < 0) || (setup->parity > 1))
3621                 return 0;
3622
3623         if ((setup->synchronous < 0) || (setup->synchronous > 1))
3624                 return 0;
3625
3626         if ((setup->ext_trans < 0) || (setup->ext_trans > 1))
3627                 return 0;
3628
3629
3630         return 1;
3631 }
3632
3633
3634 static int __init aha152x_init(void)
3635 {
3636         int i, j, ok;
3637 #if defined(AUTOCONF)
3638         aha152x_config conf;
3639 #endif
3640 #ifdef __ISAPNP__
3641         struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL};
3642 #endif
3643
3644         if ( setup_count ) {
3645                 printk(KERN_INFO "aha152x: processing commandline: ");
3646
3647                 for (i = 0; i<setup_count; i++) {
3648                         if (!checksetup(&setup[i])) {
3649                                 printk(KERN_ERR "\naha152x: %s\n", setup[i].conf);
3650                                 printk(KERN_ERR "aha152x: invalid line\n");
3651                         }
3652                 }
3653                 printk("ok\n");
3654         }
3655
3656 #if defined(SETUP0)
3657         if (setup_count < ARRAY_SIZE(setup)) {
3658                 struct aha152x_setup override = SETUP0;
3659
3660                 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3661                         if (!checksetup(&override)) {
3662                                 printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3663                                        override.io_port,
3664                                        override.irq,
3665                                        override.scsiid,
3666                                        override.reconnect,
3667                                        override.parity,
3668                                        override.synchronous,
3669                                        override.delay,
3670                                        override.ext_trans);
3671                         } else
3672                                 setup[setup_count++] = override;
3673                 }
3674         }
3675 #endif
3676
3677 #if defined(SETUP1)
3678         if (setup_count < ARRAY_SIZE(setup)) {
3679                 struct aha152x_setup override = SETUP1;
3680
3681                 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3682                         if (!checksetup(&override)) {
3683                                 printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3684                                        override.io_port,
3685                                        override.irq,
3686                                        override.scsiid,
3687                                        override.reconnect,
3688                                        override.parity,
3689                                        override.synchronous,
3690                                        override.delay,
3691                                        override.ext_trans);
3692                         } else
3693                                 setup[setup_count++] = override;
3694                 }
3695         }
3696 #endif
3697
3698 #if defined(MODULE)
3699         if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) {
3700                 if(aha152x[0]!=0) {
3701                         setup[setup_count].conf        = "";
3702                         setup[setup_count].io_port     = aha152x[0];
3703                         setup[setup_count].irq         = aha152x[1];
3704                         setup[setup_count].scsiid      = aha152x[2];
3705                         setup[setup_count].reconnect   = aha152x[3];
3706                         setup[setup_count].parity      = aha152x[4];
3707                         setup[setup_count].synchronous = aha152x[5];
3708                         setup[setup_count].delay       = aha152x[6];
3709                         setup[setup_count].ext_trans   = aha152x[7];
3710 #if defined(AHA152X_DEBUG)
3711                         setup[setup_count].debug       = aha152x[8];
3712 #endif
3713                 } else if(io[0]!=0 || irq[0]!=0) {
3714                         if(io[0]!=0)  setup[setup_count].io_port = io[0];
3715                         if(irq[0]!=0) setup[setup_count].irq     = irq[0];
3716
3717                         setup[setup_count].scsiid      = scsiid[0];
3718                         setup[setup_count].reconnect   = reconnect[0];
3719                         setup[setup_count].parity      = parity[0];
3720                         setup[setup_count].synchronous = sync[0];
3721                         setup[setup_count].delay       = delay[0];
3722                         setup[setup_count].ext_trans   = exttrans[0];
3723 #if defined(AHA152X_DEBUG)
3724                         setup[setup_count].debug       = debug[0];
3725 #endif
3726                 }
3727
3728                 if (checksetup(&setup[setup_count]))
3729                         setup_count++;
3730                 else
3731                         printk(KERN_ERR "aha152x: invalid module params io=0x%x, irq=%d,scsiid=%d,reconnect=%d,parity=%d,sync=%d,delay=%d,exttrans=%d\n",
3732                                setup[setup_count].io_port,
3733                                setup[setup_count].irq,
3734                                setup[setup_count].scsiid,
3735                                setup[setup_count].reconnect,
3736                                setup[setup_count].parity,
3737                                setup[setup_count].synchronous,
3738                                setup[setup_count].delay,
3739                                setup[setup_count].ext_trans);
3740         }
3741
3742         if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) {
3743                 if(aha152x1[0]!=0) {
3744                         setup[setup_count].conf        = "";
3745                         setup[setup_count].io_port     = aha152x1[0];
3746                         setup[setup_count].irq         = aha152x1[1];
3747                         setup[setup_count].scsiid      = aha152x1[2];
3748                         setup[setup_count].reconnect   = aha152x1[3];
3749                         setup[setup_count].parity      = aha152x1[4];
3750                         setup[setup_count].synchronous = aha152x1[5];
3751                         setup[setup_count].delay       = aha152x1[6];
3752                         setup[setup_count].ext_trans   = aha152x1[7];
3753 #if defined(AHA152X_DEBUG)
3754                         setup[setup_count].debug       = aha152x1[8];
3755 #endif
3756                 } else if(io[1]!=0 || irq[1]!=0) {
3757                         if(io[1]!=0)  setup[setup_count].io_port = io[1];
3758                         if(irq[1]!=0) setup[setup_count].irq     = irq[1];
3759
3760                         setup[setup_count].scsiid      = scsiid[1];
3761                         setup[setup_count].reconnect   = reconnect[1];
3762                         setup[setup_count].parity      = parity[1];
3763                         setup[setup_count].synchronous = sync[1];
3764                         setup[setup_count].delay       = delay[1];
3765                         setup[setup_count].ext_trans   = exttrans[1];
3766 #if defined(AHA152X_DEBUG)
3767                         setup[setup_count].debug       = debug[1];
3768 #endif
3769                 }
3770                 if (checksetup(&setup[setup_count]))
3771                         setup_count++;
3772                 else
3773                         printk(KERN_ERR "aha152x: invalid module params io=0x%x, irq=%d,scsiid=%d,reconnect=%d,parity=%d,sync=%d,delay=%d,exttrans=%d\n",
3774                                setup[setup_count].io_port,
3775                                setup[setup_count].irq,
3776                                setup[setup_count].scsiid,
3777                                setup[setup_count].reconnect,
3778                                setup[setup_count].parity,
3779                                setup[setup_count].synchronous,
3780                                setup[setup_count].delay,
3781                                setup[setup_count].ext_trans);
3782         }
3783 #endif
3784
3785 #ifdef __ISAPNP__
3786         for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) {
3787                 while ( setup_count<ARRAY_SIZE(setup) &&
3788                         (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) {
3789                         if (pnp_device_attach(dev) < 0)
3790                                 continue;
3791
3792                         if (pnp_activate_dev(dev) < 0) {
3793                                 pnp_device_detach(dev);
3794                                 continue;
3795                         }
3796
3797                         if (!pnp_port_valid(dev, 0)) {
3798                                 pnp_device_detach(dev);
3799                                 continue;
3800                         }
3801
3802                         if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) {
3803                                 pnp_device_detach(dev);
3804                                 continue;
3805                         }
3806
3807                         setup[setup_count].io_port     = pnp_port_start(dev, 0);
3808                         setup[setup_count].irq         = pnp_irq(dev, 0);
3809                         setup[setup_count].scsiid      = 7;
3810                         setup[setup_count].reconnect   = 1;
3811                         setup[setup_count].parity      = 1;
3812                         setup[setup_count].synchronous = 1;
3813                         setup[setup_count].delay       = DELAY_DEFAULT;
3814                         setup[setup_count].ext_trans   = 0;
3815 #if defined(AHA152X_DEBUG)
3816                         setup[setup_count].debug       = DEBUG_DEFAULT;
3817 #endif
3818 #if defined(__ISAPNP__)
3819                         pnpdev[setup_count]            = dev;
3820 #endif
3821                         printk (KERN_INFO
3822                                 "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n",
3823                                 setup[setup_count].io_port, setup[setup_count].irq);
3824                         setup_count++;
3825                 }
3826         }
3827 #endif
3828
3829 #if defined(AUTOCONF)
3830         if (setup_count<ARRAY_SIZE(setup)) {
3831 #if !defined(SKIP_BIOSTEST)
3832                 ok = 0;
3833                 for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) {
3834                         void __iomem *p = ioremap(addresses[i], 0x4000);
3835                         if (!p)
3836                                 continue;
3837                         for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++)
3838                                 ok = check_signature(p + signatures[j].sig_offset,
3839                                                                 signatures[j].signature, signatures[j].sig_length);
3840                         iounmap(p);
3841                 }
3842                 if (!ok && setup_count == 0)
3843                         return 0;
3844
3845                 printk(KERN_INFO "aha152x: BIOS test: passed, ");
3846 #else
3847                 printk(KERN_INFO "aha152x: ");
3848 #endif                          /* !SKIP_BIOSTEST */
3849
3850                 ok = 0;
3851                 for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) {
3852                         if ((setup_count == 1) && (setup[0].io_port == ports[i]))
3853                                 continue;
3854
3855                         if ( request_region(ports[i], IO_RANGE, "aha152x")==0 ) {
3856                                 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]);
3857                                 continue;
3858                         }
3859
3860                         if (aha152x_porttest(ports[i])) {
3861                                 setup[setup_count].tc1550  = 0;
3862
3863                                 conf.cf_port =
3864                                     (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB);
3865                         } else if (tc1550_porttest(ports[i])) {
3866                                 setup[setup_count].tc1550  = 1;
3867
3868                                 conf.cf_port =
3869                                     (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB);
3870                         } else {
3871                                 release_region(ports[i], IO_RANGE);
3872                                 continue;
3873                         }
3874
3875                         release_region(ports[i], IO_RANGE);
3876
3877                         ok++;
3878                         setup[setup_count].io_port = ports[i];
3879                         setup[setup_count].irq = IRQ_MIN + conf.cf_irq;
3880                         setup[setup_count].scsiid = conf.cf_id;
3881                         setup[setup_count].reconnect = conf.cf_tardisc;
3882                         setup[setup_count].parity = !conf.cf_parity;
3883                         setup[setup_count].synchronous = conf.cf_syncneg;
3884                         setup[setup_count].delay = DELAY_DEFAULT;
3885                         setup[setup_count].ext_trans = 0;
3886 #if defined(AHA152X_DEBUG)
3887                         setup[setup_count].debug = DEBUG_DEFAULT;
3888 #endif
3889                         setup_count++;
3890
3891                 }
3892
3893                 if (ok)
3894                         printk("auto configuration: ok, ");
3895         }
3896 #endif
3897
3898         printk("%d controller(s) configured\n", setup_count);
3899
3900         for (i=0; i<setup_count; i++) {
3901                 if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) {
3902                         struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]);
3903
3904                         if( !shpnt ) {
3905                                 release_region(setup[i].io_port, IO_RANGE);
3906 #if defined(__ISAPNP__)
3907                         } else if( pnpdev[i] ) {
3908                                 HOSTDATA(shpnt)->pnpdev=pnpdev[i];
3909                                 pnpdev[i]=NULL;
3910 #endif
3911                         }
3912                 } else {
3913                         printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port);
3914                 }
3915
3916 #if defined(__ISAPNP__)
3917                 if( pnpdev[i] )
3918                         pnp_device_detach(pnpdev[i]);
3919 #endif
3920         }
3921
3922         return registered_count>0;
3923 }
3924
3925 static void __exit aha152x_exit(void)
3926 {
3927         int i;
3928
3929         for(i=0; i<ARRAY_SIZE(setup); i++) {
3930                 aha152x_release(aha152x_host[i]);
3931                 aha152x_host[i]=NULL;
3932         }
3933 }
3934
3935 module_init(aha152x_init);
3936 module_exit(aha152x_exit);
3937
3938 #if !defined(MODULE)
3939 static int __init aha152x_setup(char *str)
3940 {
3941 #if defined(AHA152X_DEBUG)
3942         int ints[11];
3943 #else
3944         int ints[10];
3945 #endif
3946         get_options(str, ARRAY_SIZE(ints), ints);
3947
3948         if(setup_count>=ARRAY_SIZE(setup)) {
3949                 printk(KERN_ERR "aha152x: you can only configure up to two controllers\n");
3950                 return 1;
3951         }
3952
3953         setup[setup_count].conf        = str;
3954         setup[setup_count].io_port     = ints[0] >= 1 ? ints[1] : 0x340;
3955         setup[setup_count].irq         = ints[0] >= 2 ? ints[2] : 11;
3956         setup[setup_count].scsiid      = ints[0] >= 3 ? ints[3] : 7;
3957         setup[setup_count].reconnect   = ints[0] >= 4 ? ints[4] : 1;
3958         setup[setup_count].parity      = ints[0] >= 5 ? ints[5] : 1;
3959         setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1;
3960         setup[setup_count].delay       = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT;
3961         setup[setup_count].ext_trans   = ints[0] >= 8 ? ints[8] : 0;
3962 #if defined(AHA152X_DEBUG)
3963         setup[setup_count].debug       = ints[0] >= 9 ? ints[9] : DEBUG_DEFAULT;
3964         if (ints[0] > 9) {
3965                 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
3966                        "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>[,<DEBUG>]]]]]]]]\n");
3967 #else
3968         if (ints[0] > 8) {                                                /*}*/
3969                 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
3970                        "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n");
3971 #endif
3972         } else {
3973                 setup_count++;
3974                 return 0;
3975         }
3976
3977         return 1;
3978 }
3979 __setup("aha152x=", aha152x_setup);
3980 #endif
3981
3982 #endif /* !PCMCIA */