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   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 <asm/irq.h>
 240 #include <linux/io.h>
 241 #include <linux/blkdev.h>
 242 #include <asm/system.h>
 243 #include <linux/completion.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 <linux/list.h>
 257 #include <scsi/scsicam.h>
 258
 259 #include "scsi.h"
 260 #include <scsi/scsi_dbg.h>
 261 #include <scsi/scsi_host.h>
 262 #include <scsi/scsi_transport_spi.h>
 263 #include "aha152x.h"
 264
 265 static LIST_HEAD(aha152x_host_list);
 266
 267
 268 /* DEFINES */
 269
 270 /* For PCMCIA cards, always use AUTOCONF */
 271 #if defined(PCMCIA) || defined(MODULE)
 272 #if !defined(AUTOCONF)
 273 #define AUTOCONF
 274 #endif
 275 #endif
 276
 277 #if !defined(AUTOCONF) && !defined(SETUP0)
 278 #error define AUTOCONF or SETUP0
 279 #endif
 280
 281 #if defined(AHA152X_DEBUG)
 282 #define DEBUG_DEFAULT debug_eh
 283
 284 #define DPRINTK(when,msgs...) \
 285         do { if(HOSTDATA(shpnt)->debug & (when)) printk(msgs); } while(0)
 286
 287 #define DO_LOCK(flags)  \
 288         do { \
 289                 if(spin_is_locked(&QLOCK)) { \
 290                         DPRINTK(debug_intr, DEBUG_LEAD "(%s:%d) already locked at %s:%d\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__, QLOCKER, QLOCKERL); \
 291                 } \
 292                 DPRINTK(debug_locks, DEBUG_LEAD "(%s:%d) locking\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__); \
 293                 spin_lock_irqsave(&QLOCK,flags); \
 294                 DPRINTK(debug_locks, DEBUG_LEAD "(%s:%d) locked\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__); \
 295                 QLOCKER=__FUNCTION__; \
 296                 QLOCKERL=__LINE__; \
 297         } while(0)
 298
 299 #define DO_UNLOCK(flags)        \
 300         do { \
 301                 DPRINTK(debug_locks, DEBUG_LEAD "(%s:%d) unlocking (locked at %s:%d)\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__, QLOCKER, QLOCKERL); \
 302                 spin_unlock_irqrestore(&QLOCK,flags); \
 303                 DPRINTK(debug_locks, DEBUG_LEAD "(%s:%d) unlocked\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__); \
 304                 QLOCKER="(not locked)"; \
 305                 QLOCKERL=0; \
 306         } while(0)
 307
 308 #else
 309 #define DPRINTK(when,msgs...)
 310 #define DO_LOCK(flags)          spin_lock_irqsave(&QLOCK,flags)
 311 #define DO_UNLOCK(flags)        spin_unlock_irqrestore(&QLOCK,flags)
 312 #endif
 313
 314 #define LEAD            "(scsi%d:%d:%d) "
 315 #define WARN_LEAD       KERN_WARNING    LEAD
 316 #define INFO_LEAD       KERN_INFO       LEAD
 317 #define NOTE_LEAD       KERN_NOTICE     LEAD
 318 #define ERR_LEAD        KERN_ERR        LEAD
 319 #define DEBUG_LEAD      KERN_DEBUG      LEAD
 320 #define CMDINFO(cmd) \
 321                         (cmd) ? ((cmd)->device->host->host_no) : -1, \
 322                         (cmd) ? ((cmd)->device->id & 0x0f) : -1, \
 323                         (cmd) ? ((cmd)->device->lun & 0x07) : -1
 324
 325 #define DELAY_DEFAULT 1000
 326
 327 #if defined(PCMCIA)
 328 #define IRQ_MIN 0
 329 #define IRQ_MAX 16
 330 #else
 331 #define IRQ_MIN 9
 332 #if defined(__PPC)
 333 #define IRQ_MAX (NR_IRQS-1)
 334 #else
 335 #define IRQ_MAX 12
 336 #endif
 337 #endif
 338
 339 enum {
 340         not_issued      = 0x0001,       /* command not yet issued */
 341         selecting       = 0x0002,       /* target is beeing selected */
 342         identified      = 0x0004,       /* IDENTIFY was sent */
 343         disconnected    = 0x0008,       /* target disconnected */
 344         completed       = 0x0010,       /* target sent COMMAND COMPLETE */
 345         aborted         = 0x0020,       /* ABORT was sent */
 346         resetted        = 0x0040,       /* BUS DEVICE RESET was sent */
 347         spiordy         = 0x0080,       /* waiting for SPIORDY to raise */
 348         syncneg         = 0x0100,       /* synchronous negotiation in progress */
 349         aborting        = 0x0200,       /* ABORT is pending */
 350         resetting       = 0x0400,       /* BUS DEVICE RESET is pending */
 351         check_condition = 0x0800,       /* requesting sense after CHECK CONDITION */
 352 };
 353
 354 MODULE_AUTHOR("Jürgen Fischer");
 355 MODULE_DESCRIPTION(AHA152X_REVID);
 356 MODULE_LICENSE("GPL");
 357
 358 #if !defined(PCMCIA)
 359 #if defined(MODULE)
 360 static int io[] = {0, 0};
 361 module_param_array(io, int, NULL, 0);
 362 MODULE_PARM_DESC(io,"base io address of controller");
 363
 364 static int irq[] = {0, 0};
 365 module_param_array(irq, int, NULL, 0);
 366 MODULE_PARM_DESC(irq,"interrupt for controller");
 367
 368 static int scsiid[] = {7, 7};
 369 module_param_array(scsiid, int, NULL, 0);
 370 MODULE_PARM_DESC(scsiid,"scsi id of controller");
 371
 372 static int reconnect[] = {1, 1};
 373 module_param_array(reconnect, int, NULL, 0);
 374 MODULE_PARM_DESC(reconnect,"allow targets to disconnect");
 375
 376 static int parity[] = {1, 1};
 377 module_param_array(parity, int, NULL, 0);
 378 MODULE_PARM_DESC(parity,"use scsi parity");
 379
 380 static int sync[] = {1, 1};
 381 module_param_array(sync, int, NULL, 0);
 382 MODULE_PARM_DESC(sync,"use synchronous transfers");
 383
 384 static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT};
 385 module_param_array(delay, int, NULL, 0);
 386 MODULE_PARM_DESC(delay,"scsi reset delay");
 387
 388 static int exttrans[] = {0, 0};
 389 module_param_array(exttrans, int, NULL, 0);
 390 MODULE_PARM_DESC(exttrans,"use extended translation");
 391
 392 #if !defined(AHA152X_DEBUG)
 393 static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
 394 module_param_array(aha152x, int, NULL, 0);
 395 MODULE_PARM_DESC(aha152x, "parameters for first controller");
 396
 397 static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
 398 module_param_array(aha152x1, int, NULL, 0);
 399 MODULE_PARM_DESC(aha152x1, "parameters for second controller");
 400 #else
 401 static int debug[] = {DEBUG_DEFAULT, DEBUG_DEFAULT};
 402 module_param_array(debug, int, NULL, 0);
 403 MODULE_PARM_DESC(debug, "flags for driver debugging");
 404
 405 static int aha152x[]   = {0, 11, 7, 1, 1, 1, DELAY_DEFAULT, 0, DEBUG_DEFAULT};
 406 module_param_array(aha152x, int, NULL, 0);
 407 MODULE_PARM_DESC(aha152x, "parameters for first controller");
 408
 409 static int aha152x1[]  = {0, 11, 7, 1, 1, 1, DELAY_DEFAULT, 0, DEBUG_DEFAULT};
 410 module_param_array(aha152x1, int, NULL, 0);
 411 MODULE_PARM_DESC(aha152x1, "parameters for second controller");
 412 #endif /* !defined(AHA152X_DEBUG) */
 413 #endif /* MODULE */
 414
 415 #ifdef __ISAPNP__
 416 static struct isapnp_device_id id_table[] __devinitdata = {
 417         { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
 418                 ISAPNP_VENDOR('A','D','P'), ISAPNP_FUNCTION(0x1505), 0 },
 419         { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
 420                 ISAPNP_VENDOR('A','D','P'), ISAPNP_FUNCTION(0x1530), 0 },
 421         { ISAPNP_DEVICE_SINGLE_END, }
 422 };
 423 MODULE_DEVICE_TABLE(isapnp, id_table);
 424 #endif /* ISAPNP */
 425
 426 #endif /* !PCMCIA */
 427
 428 static struct scsi_host_template aha152x_driver_template;
 429
 430 /*
 431  * internal states of the host
 432  *
 433  */
 434 enum aha152x_state {
 435         idle=0,
 436         unknown,
 437         seldo,
 438         seldi,
 439         selto,
 440         busfree,
 441         msgo,
 442         cmd,
 443         msgi,
 444         status,
 445         datai,
 446         datao,
 447         parerr,
 448         rsti,
 449         maxstate
 450 };
 451
 452 /*
 453  * current state information of the host
 454  *
 455  */
 456 struct aha152x_hostdata {
 457         Scsi_Cmnd *issue_SC;
 458                 /* pending commands to issue */
 459
 460         Scsi_Cmnd *current_SC;
 461                 /* current command on the bus */
 462
 463         Scsi_Cmnd *disconnected_SC;
 464                 /* commands that disconnected */
 465
 466         Scsi_Cmnd *done_SC;
 467                 /* command that was completed */
 468
 469         spinlock_t lock;
 470                 /* host lock */
 471
 472 #if defined(AHA152X_DEBUG)
 473         const char *locker;
 474                 /* which function has the lock */
 475         int lockerl;    /* where did it get it */
 476
 477         int debug;      /* current debugging setting */
 478 #endif
 479
 480 #if defined(AHA152X_STAT)
 481         int           total_commands;
 482         int           disconnections;
 483         int           busfree_without_any_action;
 484         int           busfree_without_old_command;
 485         int           busfree_without_new_command;
 486         int           busfree_without_done_command;
 487         int           busfree_with_check_condition;
 488         int           count[maxstate];
 489         int           count_trans[maxstate];
 490         unsigned long time[maxstate];
 491 #endif
 492
 493         int commands;           /* current number of commands */
 494
 495         int reconnect;          /* disconnection allowed */
 496         int parity;             /* parity checking enabled */
 497         int synchronous;        /* synchronous transferes enabled */
 498         int delay;              /* reset out delay */
 499         int ext_trans;          /* extended translation enabled */
 500
 501         int swint;              /* software-interrupt was fired during detect() */
 502         int service;            /* bh needs to be run */
 503         int in_intr;            /* bh is running */
 504
 505         /* current state,
 506            previous state,
 507            last state different from current state */
 508         enum aha152x_state state, prevstate, laststate;
 509
 510         int target;
 511                 /* reconnecting target */
 512
 513         unsigned char syncrate[8];
 514                 /* current synchronous transfer agreements */
 515
 516         unsigned char syncneg[8];
 517                 /* 0: no negotiation;
 518                  * 1: negotiation in progress;
 519                  * 2: negotiation completed
 520                  */
 521
 522         int cmd_i;
 523                 /* number of sent bytes of current command */
 524
 525         int msgi_len;
 526                 /* number of received message bytes */
 527         unsigned char msgi[256];
 528                 /* received message bytes */
 529
 530         int msgo_i, msgo_len;
 531                 /* number of sent bytes and length of current messages */
 532         unsigned char msgo[256];
 533                 /* pending messages */
 534
 535         int data_len;
 536                 /* number of sent/received bytes in dataphase */
 537
 538         unsigned long io_port0;
 539         unsigned long io_port1;
 540
 541 #ifdef __ISAPNP__
 542         struct pnp_dev *pnpdev;
 543 #endif
 544         struct list_head host_list;
 545 };
 546
 547
 548 /*
 549  * host specific command extension
 550  *
 551  */
 552 struct aha152x_scdata {
 553         Scsi_Cmnd *next;        /* next sc in queue */
 554         struct completion *done;/* semaphore to block on */
 555         unsigned char cmd_len;
 556         unsigned char cmnd[MAX_COMMAND_SIZE];
 557         unsigned short use_sg;
 558         unsigned request_bufflen;
 559         void *request_buffer;
 560 };
 561
 562
 563 /* access macros for hostdata */
 564
 565 #define HOSTDATA(shpnt)         ((struct aha152x_hostdata *) &shpnt->hostdata)
 566
 567 #define HOSTNO                  ((shpnt)->host_no)
 568
 569 #define CURRENT_SC              (HOSTDATA(shpnt)->current_SC)
 570 #define DONE_SC                 (HOSTDATA(shpnt)->done_SC)
 571 #define ISSUE_SC                (HOSTDATA(shpnt)->issue_SC)
 572 #define DISCONNECTED_SC         (HOSTDATA(shpnt)->disconnected_SC)
 573 #define QLOCK                   (HOSTDATA(shpnt)->lock)
 574 #define QLOCKER                 (HOSTDATA(shpnt)->locker)
 575 #define QLOCKERL                (HOSTDATA(shpnt)->lockerl)
 576
 577 #define STATE                   (HOSTDATA(shpnt)->state)
 578 #define PREVSTATE               (HOSTDATA(shpnt)->prevstate)
 579 #define LASTSTATE               (HOSTDATA(shpnt)->laststate)
 580
 581 #define RECONN_TARGET           (HOSTDATA(shpnt)->target)
 582
 583 #define CMD_I                   (HOSTDATA(shpnt)->cmd_i)
 584
 585 #define MSGO(i)                 (HOSTDATA(shpnt)->msgo[i])
 586 #define MSGO_I                  (HOSTDATA(shpnt)->msgo_i)
 587 #define MSGOLEN                 (HOSTDATA(shpnt)->msgo_len)
 588 #define ADDMSGO(x)              (MSGOLEN<256 ? (void)(MSGO(MSGOLEN++)=x) : aha152x_error(shpnt,"MSGO overflow"))
 589
 590 #define MSGI(i)                 (HOSTDATA(shpnt)->msgi[i])
 591 #define MSGILEN                 (HOSTDATA(shpnt)->msgi_len)
 592 #define ADDMSGI(x)              (MSGILEN<256 ? (void)(MSGI(MSGILEN++)=x) : aha152x_error(shpnt,"MSGI overflow"))
 593
 594 #define DATA_LEN                (HOSTDATA(shpnt)->data_len)
 595
 596 #define SYNCRATE                (HOSTDATA(shpnt)->syncrate[CURRENT_SC->device->id])
 597 #define SYNCNEG                 (HOSTDATA(shpnt)->syncneg[CURRENT_SC->device->id])
 598
 599 #define DELAY                   (HOSTDATA(shpnt)->delay)
 600 #define EXT_TRANS               (HOSTDATA(shpnt)->ext_trans)
 601 #define TC1550                  (HOSTDATA(shpnt)->tc1550)
 602 #define RECONNECT               (HOSTDATA(shpnt)->reconnect)
 603 #define PARITY                  (HOSTDATA(shpnt)->parity)
 604 #define SYNCHRONOUS             (HOSTDATA(shpnt)->synchronous)
 605
 606 #define HOSTIOPORT0             (HOSTDATA(shpnt)->io_port0)
 607 #define HOSTIOPORT1             (HOSTDATA(shpnt)->io_port1)
 608
 609 #define SCDATA(SCpnt)           ((struct aha152x_scdata *) (SCpnt)->host_scribble)
 610 #define SCNEXT(SCpnt)           SCDATA(SCpnt)->next
 611 #define SCSEM(SCpnt)            SCDATA(SCpnt)->done
 612
 613 #define SG_ADDRESS(buffer)      ((char *) (page_address((buffer)->page)+(buffer)->offset))
 614
 615 /* state handling */
 616 static void seldi_run(struct Scsi_Host *shpnt);
 617 static void seldo_run(struct Scsi_Host *shpnt);
 618 static void selto_run(struct Scsi_Host *shpnt);
 619 static void busfree_run(struct Scsi_Host *shpnt);
 620
 621 static void msgo_init(struct Scsi_Host *shpnt);
 622 static void msgo_run(struct Scsi_Host *shpnt);
 623 static void msgo_end(struct Scsi_Host *shpnt);
 624
 625 static void cmd_init(struct Scsi_Host *shpnt);
 626 static void cmd_run(struct Scsi_Host *shpnt);
 627 static void cmd_end(struct Scsi_Host *shpnt);
 628
 629 static void datai_init(struct Scsi_Host *shpnt);
 630 static void datai_run(struct Scsi_Host *shpnt);
 631 static void datai_end(struct Scsi_Host *shpnt);
 632
 633 static void datao_init(struct Scsi_Host *shpnt);
 634 static void datao_run(struct Scsi_Host *shpnt);
 635 static void datao_end(struct Scsi_Host *shpnt);
 636
 637 static void status_run(struct Scsi_Host *shpnt);
 638
 639 static void msgi_run(struct Scsi_Host *shpnt);
 640 static void msgi_end(struct Scsi_Host *shpnt);
 641
 642 static void parerr_run(struct Scsi_Host *shpnt);
 643 static void rsti_run(struct Scsi_Host *shpnt);
 644
 645 static void is_complete(struct Scsi_Host *shpnt);
 646
 647 /*
 648  * driver states
 649  *
 650  */
 651 static struct {
 652         char            *name;
 653         void            (*init)(struct Scsi_Host *);
 654         void            (*run)(struct Scsi_Host *);
 655         void            (*end)(struct Scsi_Host *);
 656         int             spio;
 657 } states[] = {
 658         { "idle",       NULL,           NULL,           NULL,           0},
 659         { "unknown",    NULL,           NULL,           NULL,           0},
 660         { "seldo",      NULL,           seldo_run,      NULL,           0},
 661         { "seldi",      NULL,           seldi_run,      NULL,           0},
 662         { "selto",      NULL,           selto_run,      NULL,           0},
 663         { "busfree",    NULL,           busfree_run,    NULL,           0},
 664         { "msgo",       msgo_init,      msgo_run,       msgo_end,       1},
 665         { "cmd",        cmd_init,       cmd_run,        cmd_end,        1},
 666         { "msgi",       NULL,           msgi_run,       msgi_end,       1},
 667         { "status",     NULL,           status_run,     NULL,           1},
 668         { "datai",      datai_init,     datai_run,      datai_end,      0},
 669         { "datao",      datao_init,     datao_run,      datao_end,      0},
 670         { "parerr",     NULL,           parerr_run,     NULL,           0},
 671         { "rsti",       NULL,           rsti_run,       NULL,           0},
 672 };
 673
 674 /* setup & interrupt */
 675 static irqreturn_t intr(int irq, void *dev_id);
 676 static void reset_ports(struct Scsi_Host *shpnt);
 677 static void aha152x_error(struct Scsi_Host *shpnt, char *msg);
 678 static void done(struct Scsi_Host *shpnt, int error);
 679
 680 /* diagnostics */
 681 static void disp_ports(struct Scsi_Host *shpnt);
 682 static void show_command(Scsi_Cmnd * ptr);
 683 static void show_queues(struct Scsi_Host *shpnt);
 684 static void disp_enintr(struct Scsi_Host *shpnt);
 685
 686
 687 /*
 688  *  queue services:
 689  *
 690  */
 691 static inline void append_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC)
 692 {
 693         Scsi_Cmnd *end;
 694
 695         SCNEXT(new_SC) = NULL;
 696         if (!*SC)
 697                 *SC = new_SC;
 698         else {
 699                 for (end = *SC; SCNEXT(end); end = SCNEXT(end))
 700                         ;
 701                 SCNEXT(end) = new_SC;
 702         }
 703 }
 704
 705 static inline Scsi_Cmnd *remove_first_SC(Scsi_Cmnd ** SC)
 706 {
 707         Scsi_Cmnd *ptr;
 708
 709         ptr = *SC;
 710         if (ptr) {
 711                 *SC = SCNEXT(*SC);
 712                 SCNEXT(ptr)=NULL;
 713         }
 714         return ptr;
 715 }
 716
 717 static inline Scsi_Cmnd *remove_lun_SC(Scsi_Cmnd ** SC, int target, int lun)
 718 {
 719         Scsi_Cmnd *ptr, *prev;
 720
 721         for (ptr = *SC, prev = NULL;
 722              ptr && ((ptr->device->id != target) || (ptr->device->lun != lun));
 723              prev = ptr, ptr = SCNEXT(ptr))
 724              ;
 725
 726         if (ptr) {
 727                 if (prev)
 728                         SCNEXT(prev) = SCNEXT(ptr);
 729                 else
 730                         *SC = SCNEXT(ptr);
 731
 732                 SCNEXT(ptr)=NULL;
 733         }
 734
 735         return ptr;
 736 }
 737
 738 static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, Scsi_Cmnd *SCp)
 739 {
 740         Scsi_Cmnd *ptr, *prev;
 741
 742         for (ptr = *SC, prev = NULL;
 743              ptr && SCp!=ptr;
 744              prev = ptr, ptr = SCNEXT(ptr))
 745              ;
 746
 747         if (ptr) {
 748                 if (prev)
 749                         SCNEXT(prev) = SCNEXT(ptr);
 750                 else
 751                         *SC = SCNEXT(ptr);
 752
 753                 SCNEXT(ptr)=NULL;
 754         }
 755
 756         return ptr;
 757 }
 758
 759 static irqreturn_t swintr(int irqno, void *dev_id)
 760 {
 761         struct Scsi_Host *shpnt = dev_id;
 762
 763         HOSTDATA(shpnt)->swint++;
 764
 765         SETPORT(DMACNTRL0, INTEN);
 766         return IRQ_HANDLED;
 767 }
 768
 769 struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)
 770 {
 771         struct Scsi_Host *shpnt;
 772
 773         shpnt = scsi_host_alloc(&aha152x_driver_template, sizeof(struct aha152x_hostdata));
 774         if (!shpnt) {
 775                 printk(KERN_ERR "aha152x: scsi_host_alloc failed\n");
 776                 return NULL;
 777         }
 778
 779         memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt));
 780         INIT_LIST_HEAD(&HOSTDATA(shpnt)->host_list);
 781
 782         /* need to have host registered before triggering any interrupt */
 783         list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list);
 784
 785         shpnt->io_port   = setup->io_port;
 786         shpnt->n_io_port = IO_RANGE;
 787         shpnt->irq       = setup->irq;
 788
 789         if (!setup->tc1550) {
 790                 HOSTIOPORT0 = setup->io_port;
 791                 HOSTIOPORT1 = setup->io_port;
 792         } else {
 793                 HOSTIOPORT0 = setup->io_port+0x10;
 794                 HOSTIOPORT1 = setup->io_port-0x10;
 795         }
 796
 797         spin_lock_init(&QLOCK);
 798         RECONNECT   = setup->reconnect;
 799         SYNCHRONOUS = setup->synchronous;
 800         PARITY      = setup->parity;
 801         DELAY       = setup->delay;
 802         EXT_TRANS   = setup->ext_trans;
 803
 804 #if defined(AHA152X_DEBUG)
 805         HOSTDATA(shpnt)->debug = setup->debug;
 806 #endif
 807
 808         SETPORT(SCSIID, setup->scsiid << 4);
 809         shpnt->this_id = setup->scsiid;
 810
 811         if (setup->reconnect)
 812                 shpnt->can_queue = AHA152X_MAXQUEUE;
 813
 814         /* RESET OUT */
 815         printk("aha152x: resetting bus...\n");
 816         SETPORT(SCSISEQ, SCSIRSTO);
 817         mdelay(256);
 818         SETPORT(SCSISEQ, 0);
 819         mdelay(DELAY);
 820
 821         reset_ports(shpnt);
 822
 823         printk(KERN_INFO
 824                "aha152x%d%s: "
 825                "vital data: rev=%x, "
 826                "io=0x%03lx (0x%03lx/0x%03lx), "
 827                "irq=%d, "
 828                "scsiid=%d, "
 829                "reconnect=%s, "
 830                "parity=%s, "
 831                "synchronous=%s, "
 832                "delay=%d, "
 833                "extended translation=%s\n",
 834                shpnt->host_no, setup->tc1550 ? " (tc1550 mode)" : "",
 835                GETPORT(REV) & 0x7,
 836                shpnt->io_port, HOSTIOPORT0, HOSTIOPORT1,
 837                shpnt->irq,
 838                shpnt->this_id,
 839                RECONNECT ? "enabled" : "disabled",
 840                PARITY ? "enabled" : "disabled",
 841                SYNCHRONOUS ? "enabled" : "disabled",
 842                DELAY,
 843                EXT_TRANS ? "enabled" : "disabled");
 844
 845         /* not expecting any interrupts */
 846         SETPORT(SIMODE0, 0);
 847         SETPORT(SIMODE1, 0);
 848
 849         if( request_irq(shpnt->irq, swintr, IRQF_DISABLED|IRQF_SHARED, "aha152x", shpnt) ) {
 850                 printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq);
 851                 goto out_host_put;
 852         }
 853
 854         HOSTDATA(shpnt)->swint = 0;
 855
 856         printk(KERN_INFO "aha152x%d: trying software interrupt, ", shpnt->host_no);
 857
 858         mb();
 859         SETPORT(DMACNTRL0, SWINT|INTEN);
 860         mdelay(1000);
 861         free_irq(shpnt->irq, shpnt);
 862
 863         if (!HOSTDATA(shpnt)->swint) {
 864                 if (TESTHI(DMASTAT, INTSTAT)) {
 865                         printk("lost.\n");
 866                 } else {
 867                         printk("failed.\n");
 868                 }
 869
 870                 SETPORT(DMACNTRL0, INTEN);
 871
 872                 printk(KERN_ERR "aha152x%d: irq %d possibly wrong.  "
 873                                 "Please verify.\n", shpnt->host_no, shpnt->irq);
 874                 goto out_host_put;
 875         }
 876         printk("ok.\n");
 877
 878
 879         /* clear interrupts */
 880         SETPORT(SSTAT0, 0x7f);
 881         SETPORT(SSTAT1, 0xef);
 882
 883         if ( request_irq(shpnt->irq, intr, IRQF_DISABLED|IRQF_SHARED, "aha152x", shpnt) ) {
 884                 printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq);
 885                 goto out_host_put;
 886         }
 887
 888         if( scsi_add_host(shpnt, NULL) ) {
 889                 free_irq(shpnt->irq, shpnt);
 890                 printk(KERN_ERR "aha152x%d: failed to add host.\n", shpnt->host_no);
 891                 goto out_host_put;
 892         }
 893
 894         scsi_scan_host(shpnt);
 895
 896         return shpnt;
 897
 898 out_host_put:
 899         list_del(&HOSTDATA(shpnt)->host_list);
 900         scsi_host_put(shpnt);
 901
 902         return NULL;
 903 }
 904
 905 void aha152x_release(struct Scsi_Host *shpnt)
 906 {
 907         if(!shpnt)
 908                 return;
 909
 910         if (shpnt->irq)
 911                 free_irq(shpnt->irq, shpnt);
 912
 913 #if !defined(PCMCIA)
 914         if (shpnt->io_port)
 915                 release_region(shpnt->io_port, IO_RANGE);
 916 #endif
 917
 918 #ifdef __ISAPNP__
 919         if (HOSTDATA(shpnt)->pnpdev)
 920                 pnp_device_detach(HOSTDATA(shpnt)->pnpdev);
 921 #endif
 922
 923         scsi_remove_host(shpnt);
 924         list_del(&HOSTDATA(shpnt)->host_list);
 925         scsi_host_put(shpnt);
 926 }
 927
 928
 929 /*
 930  * setup controller to generate interrupts depending
 931  * on current state (lock has to be acquired)
 932  *
 933  */
 934 static int setup_expected_interrupts(struct Scsi_Host *shpnt)
 935 {
 936         if(CURRENT_SC) {
 937                 CURRENT_SC->SCp.phase |= 1 << 16;
 938
 939                 if(CURRENT_SC->SCp.phase & selecting) {
 940                         DPRINTK(debug_intr, DEBUG_LEAD "expecting: (seldo) (seltimo) (seldi)\n", CMDINFO(CURRENT_SC));
 941                         SETPORT(SSTAT1, SELTO);
 942                         SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0));
 943                         SETPORT(SIMODE1, ENSELTIMO);
 944                 } else {
 945                         DPRINTK(debug_intr, DEBUG_LEAD "expecting: (phase change) (busfree) %s\n", CMDINFO(CURRENT_SC), CURRENT_SC->SCp.phase & spiordy ? "(spiordy)" : "");
 946                         SETPORT(SIMODE0, (CURRENT_SC->SCp.phase & spiordy) ? ENSPIORDY : 0);
 947                         SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
 948                 }
 949         } else if(STATE==seldi) {
 950                 DPRINTK(debug_intr, DEBUG_LEAD "expecting: (phase change) (identify)\n", CMDINFO(CURRENT_SC));
 951                 SETPORT(SIMODE0, 0);
 952                 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
 953         } else {
 954                 DPRINTK(debug_intr, DEBUG_LEAD "expecting: %s %s\n",
 955                         CMDINFO(CURRENT_SC),
 956                         DISCONNECTED_SC ? "(reselection)" : "",
 957                         ISSUE_SC ? "(busfree)" : "");
 958                 SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0);
 959                 SETPORT(SIMODE1, ENSCSIRST | ( (ISSUE_SC||DONE_SC) ? ENBUSFREE : 0));
 960         }
 961
 962         if(!HOSTDATA(shpnt)->in_intr)
 963                 SETBITS(DMACNTRL0, INTEN);
 964
 965         return TESTHI(DMASTAT, INTSTAT);
 966 }
 967
 968
 969 /*
 970  *  Queue a command and setup interrupts for a free bus.
 971  */
 972 static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, struct completion *complete,
 973                 int phase, void (*done)(Scsi_Cmnd *))
 974 {
 975         struct Scsi_Host *shpnt = SCpnt->device->host;
 976         unsigned long flags;
 977
 978 #if defined(AHA152X_DEBUG)
 979         if (HOSTDATA(shpnt)->debug & debug_queue) {
 980                 printk(INFO_LEAD "queue: %p; cmd_len=%d pieces=%d size=%u cmnd=",
 981                        CMDINFO(SCpnt), SCpnt, SCpnt->cmd_len, SCpnt->use_sg, SCpnt->request_bufflen);
 982                 __scsi_print_command(SCpnt->cmnd);
 983         }
 984 #endif
 985
 986         SCpnt->scsi_done        = done;
 987         SCpnt->resid            = SCpnt->request_bufflen;
 988         SCpnt->SCp.phase        = not_issued | phase;
 989         SCpnt->SCp.Status       = CHECK_CONDITION;
 990         SCpnt->SCp.Message      = 0;
 991         SCpnt->SCp.have_data_in = 0;
 992         SCpnt->SCp.sent_command = 0;
 993
 994         if(SCpnt->SCp.phase & (resetting|check_condition)) {
 995                 if(SCpnt->host_scribble==0 || SCSEM(SCpnt) || SCNEXT(SCpnt)) {
 996                         printk(ERR_LEAD "cannot reuse command\n", CMDINFO(SCpnt));
 997                         return FAILED;
 998                 }
 999         } else {
1000                 struct aha152x_scdata *sc;
1001
1002                 SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC);
1003                 if(SCpnt->host_scribble==0) {
1004                         printk(ERR_LEAD "allocation failed\n", CMDINFO(SCpnt));
1005                         return FAILED;
1006                 }
1007
1008                 sc = SCDATA(SCpnt);
1009                 memcpy(sc->cmnd, SCpnt->cmnd, sizeof(sc->cmnd));
1010                 sc->request_buffer  = SCpnt->request_buffer;
1011                 sc->request_bufflen = SCpnt->request_bufflen;
1012                 sc->use_sg          = SCpnt->use_sg;
1013                 sc->cmd_len         = SCpnt->cmd_len;
1014         }
1015
1016         SCNEXT(SCpnt)           = NULL;
1017         SCSEM(SCpnt)            = complete;
1018
1019         /* setup scratch area
1020            SCp.ptr              : buffer pointer
1021            SCp.this_residual    : buffer length
1022            SCp.buffer           : next buffer
1023            SCp.buffers_residual : left buffers in list
1024            SCp.phase            : current state of the command */
1025         if (SCpnt->use_sg) {
1026                 SCpnt->SCp.buffer           = (struct scatterlist *) SCpnt->request_buffer;
1027                 SCpnt->SCp.ptr              = SG_ADDRESS(SCpnt->SCp.buffer);
1028                 SCpnt->SCp.this_residual    = SCpnt->SCp.buffer->length;
1029                 SCpnt->SCp.buffers_residual = SCpnt->use_sg - 1;
1030         } else {
1031                 SCpnt->SCp.ptr              = (char *) SCpnt->request_buffer;
1032                 SCpnt->SCp.this_residual    = SCpnt->request_bufflen;
1033                 SCpnt->SCp.buffer           = NULL;
1034                 SCpnt->SCp.buffers_residual = 0;
1035         }
1036
1037         DO_LOCK(flags);
1038
1039 #if defined(AHA152X_STAT)
1040         HOSTDATA(shpnt)->total_commands++;
1041 #endif
1042
1043         /* Turn led on, when this is the first command. */
1044         HOSTDATA(shpnt)->commands++;
1045         if (HOSTDATA(shpnt)->commands==1)
1046                 SETPORT(PORTA, 1);
1047
1048         append_SC(&ISSUE_SC, SCpnt);
1049
1050         if(!HOSTDATA(shpnt)->in_intr)
1051                 setup_expected_interrupts(shpnt);
1052
1053         DO_UNLOCK(flags);
1054
1055         return 0;
1056 }
1057
1058 /*
1059  *  queue a command
1060  *
1061  */
1062 static int aha152x_queue(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
1063 {
1064 #if 0
1065         if(*SCpnt->cmnd == REQUEST_SENSE) {
1066                 SCpnt->result = 0;
1067                 done(SCpnt);
1068
1069                 return 0;
1070         }
1071 #endif
1072
1073         return aha152x_internal_queue(SCpnt, NULL, 0, done);
1074 }
1075
1076
1077 /*
1078  *
1079  *
1080  */
1081 static void reset_done(Scsi_Cmnd *SCpnt)
1082 {
1083 #if 0
1084         struct Scsi_Host *shpnt = SCpnt->host;
1085         DPRINTK(debug_eh, INFO_LEAD "reset_done called\n", CMDINFO(SCpnt));
1086 #endif
1087         if(SCSEM(SCpnt)) {
1088                 complete(SCSEM(SCpnt));
1089         } else {
1090                 printk(KERN_ERR "aha152x: reset_done w/o completion\n");
1091         }
1092 }
1093
1094 /*
1095  *  Abort a command
1096  *
1097  */
1098 static int aha152x_abort(Scsi_Cmnd *SCpnt)
1099 {
1100         struct Scsi_Host *shpnt = SCpnt->device->host;
1101         Scsi_Cmnd *ptr;
1102         unsigned long flags;
1103
1104 #if defined(AHA152X_DEBUG)
1105         if(HOSTDATA(shpnt)->debug & debug_eh) {
1106                 printk(DEBUG_LEAD "abort(%p)", CMDINFO(SCpnt), SCpnt);
1107                 show_queues(shpnt);
1108         }
1109 #endif
1110
1111         DO_LOCK(flags);
1112
1113         ptr=remove_SC(&ISSUE_SC, SCpnt);
1114
1115         if(ptr) {
1116                 DPRINTK(debug_eh, DEBUG_LEAD "not yet issued - SUCCESS\n", CMDINFO(SCpnt));
1117
1118                 HOSTDATA(shpnt)->commands--;
1119                 if (!HOSTDATA(shpnt)->commands)
1120                         SETPORT(PORTA, 0);
1121                 DO_UNLOCK(flags);
1122
1123                 kfree(SCpnt->host_scribble);
1124                 SCpnt->host_scribble=NULL;
1125
1126                 return SUCCESS;
1127         }
1128
1129         DO_UNLOCK(flags);
1130
1131         /*
1132          * FIXME:
1133          * for current command: queue ABORT for message out and raise ATN
1134          * for disconnected command: pseudo SC with ABORT message or ABORT on reselection?
1135          *
1136          */
1137
1138         printk(ERR_LEAD "cannot abort running or disconnected command\n", CMDINFO(SCpnt));
1139
1140         return FAILED;
1141 }
1142
1143 /*
1144  * Reset a device
1145  *
1146  */
1147 static int aha152x_device_reset(Scsi_Cmnd * SCpnt)
1148 {
1149         struct Scsi_Host *shpnt = SCpnt->device->host;
1150         DECLARE_COMPLETION(done);
1151         int ret, issued, disconnected;
1152         unsigned char old_cmd_len = SCpnt->cmd_len;
1153         unsigned short old_use_sg = SCpnt->use_sg;
1154         void *old_buffer = SCpnt->request_buffer;
1155         unsigned old_bufflen = SCpnt->request_bufflen;
1156         unsigned long flags;
1157         unsigned long timeleft;
1158
1159 #if defined(AHA152X_DEBUG)
1160         if(HOSTDATA(shpnt)->debug & debug_eh) {
1161                 printk(INFO_LEAD "aha152x_device_reset(%p)", CMDINFO(SCpnt), SCpnt);
1162                 show_queues(shpnt);
1163         }
1164 #endif
1165
1166         if(CURRENT_SC==SCpnt) {
1167                 printk(ERR_LEAD "cannot reset current device\n", CMDINFO(SCpnt));
1168                 return FAILED;
1169         }
1170
1171         DO_LOCK(flags);
1172         issued       = remove_SC(&ISSUE_SC, SCpnt)==0;
1173         disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt);
1174         DO_UNLOCK(flags);
1175
1176         SCpnt->cmd_len         = 0;
1177         SCpnt->use_sg          = 0;
1178         SCpnt->request_buffer  = NULL;
1179         SCpnt->request_bufflen = 0;
1180
1181         aha152x_internal_queue(SCpnt, &done, resetting, reset_done);
1182
1183         timeleft = wait_for_completion_timeout(&done, 100*HZ);
1184         if (!timeleft) {
1185                 /* remove command from issue queue */
1186                 DO_LOCK(flags);
1187                 remove_SC(&ISSUE_SC, SCpnt);
1188                 DO_UNLOCK(flags);
1189         }
1190
1191         SCpnt->cmd_len         = old_cmd_len;
1192         SCpnt->use_sg          = old_use_sg;
1193         SCpnt->request_buffer  = old_buffer;
1194         SCpnt->request_bufflen = old_bufflen;
1195
1196         DO_LOCK(flags);
1197
1198         if(SCpnt->SCp.phase & resetted) {
1199                 HOSTDATA(shpnt)->commands--;
1200                 if (!HOSTDATA(shpnt)->commands)
1201                         SETPORT(PORTA, 0);
1202                 kfree(SCpnt->host_scribble);
1203                 SCpnt->host_scribble=NULL;
1204
1205                 ret = SUCCESS;
1206         } else {
1207                 /* requeue */
1208                 if(!issued) {
1209                         append_SC(&ISSUE_SC, SCpnt);
1210                 } else if(disconnected) {
1211                         append_SC(&DISCONNECTED_SC, SCpnt);
1212                 }
1213
1214                 ret = FAILED;
1215         }
1216
1217         DO_UNLOCK(flags);
1218         return ret;
1219 }
1220
1221 static void free_hard_reset_SCs(struct Scsi_Host *shpnt, Scsi_Cmnd **SCs)
1222 {
1223         Scsi_Cmnd *ptr;
1224
1225         ptr=*SCs;
1226         while(ptr) {
1227                 Scsi_Cmnd *next;
1228
1229                 if(SCDATA(ptr)) {
1230                         next = SCNEXT(ptr);
1231                 } else {
1232                         printk(DEBUG_LEAD "queue corrupted at %p\n", CMDINFO(ptr), ptr);
1233                         next = NULL;
1234                 }
1235
1236                 if (!ptr->device->soft_reset) {
1237                         DPRINTK(debug_eh, DEBUG_LEAD "disconnected command %p removed\n", CMDINFO(ptr), ptr);
1238                         remove_SC(SCs, ptr);
1239                         HOSTDATA(shpnt)->commands--;
1240                         kfree(ptr->host_scribble);
1241                         ptr->host_scribble=NULL;
1242                 }
1243
1244                 ptr = next;
1245         }
1246 }
1247
1248 /*
1249  * Reset the bus
1250  *
1251  */
1252 static int aha152x_bus_reset_host(struct Scsi_Host *shpnt)
1253 {
1254         unsigned long flags;
1255
1256         DO_LOCK(flags);
1257
1258 #if defined(AHA152X_DEBUG)
1259         if(HOSTDATA(shpnt)->debug & debug_eh) {
1260                 printk(KERN_DEBUG "scsi%d: bus reset", shpnt->host_no);
1261                 show_queues(shpnt);
1262         }
1263 #endif
1264
1265         free_hard_reset_SCs(shpnt, &ISSUE_SC);
1266         free_hard_reset_SCs(shpnt, &DISCONNECTED_SC);
1267
1268         DPRINTK(debug_eh, KERN_DEBUG "scsi%d: resetting bus\n", shpnt->host_no);
1269
1270         SETPORT(SCSISEQ, SCSIRSTO);
1271         mdelay(256);
1272         SETPORT(SCSISEQ, 0);
1273         mdelay(DELAY);
1274
1275         DPRINTK(debug_eh, KERN_DEBUG "scsi%d: bus resetted\n", shpnt->host_no);
1276
1277         setup_expected_interrupts(shpnt);
1278         if(HOSTDATA(shpnt)->commands==0)
1279                 SETPORT(PORTA, 0);
1280
1281         DO_UNLOCK(flags);
1282
1283         return SUCCESS;
1284 }
1285
1286 /*
1287  * Reset the bus
1288  *
1289  */
1290 static int aha152x_bus_reset(Scsi_Cmnd *SCpnt)
1291 {
1292         return aha152x_bus_reset_host(SCpnt->device->host);
1293 }
1294
1295 /*
1296  *  Restore default values to the AIC-6260 registers and reset the fifos
1297  *
1298  */
1299 static void reset_ports(struct Scsi_Host *shpnt)
1300 {
1301         unsigned long flags;
1302
1303         /* disable interrupts */
1304         SETPORT(DMACNTRL0, RSTFIFO);
1305
1306         SETPORT(SCSISEQ, 0);
1307
1308         SETPORT(SXFRCTL1, 0);
1309         SETPORT(SCSISIG, 0);
1310         SETRATE(0);
1311
1312         /* clear all interrupt conditions */
1313         SETPORT(SSTAT0, 0x7f);
1314         SETPORT(SSTAT1, 0xef);
1315
1316         SETPORT(SSTAT4, SYNCERR | FWERR | FRERR);
1317
1318         SETPORT(DMACNTRL0, 0);
1319         SETPORT(DMACNTRL1, 0);
1320
1321         SETPORT(BRSTCNTRL, 0xf1);
1322
1323         /* clear SCSI fifos and transfer count */
1324         SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1325         SETPORT(SXFRCTL0, CH1);
1326
1327         DO_LOCK(flags);
1328         setup_expected_interrupts(shpnt);
1329         DO_UNLOCK(flags);
1330 }
1331
1332 /*
1333  * Reset the host (bus and controller)
1334  *
1335  */
1336 int aha152x_host_reset_host(struct Scsi_Host *shpnt)
1337 {
1338         DPRINTK(debug_eh, KERN_DEBUG "scsi%d: host reset\n", shpnt->host_no);
1339
1340         aha152x_bus_reset_host(shpnt);
1341
1342         DPRINTK(debug_eh, KERN_DEBUG "scsi%d: resetting ports\n", shpnt->host_no);
1343         reset_ports(shpnt);
1344
1345         return SUCCESS;
1346 }
1347
1348 /*
1349  * Reset the host (bus and controller)
1350  *
1351  */
1352 static int aha152x_host_reset(Scsi_Cmnd *SCpnt)
1353 {
1354         return aha152x_host_reset_host(SCpnt->device->host);
1355 }
1356
1357 /*
1358  * Return the "logical geometry"
1359  *
1360  */
1361 static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev,
1362                 sector_t capacity, int *info_array)
1363 {
1364         struct Scsi_Host *shpnt = sdev->host;
1365
1366         /* try default translation */
1367         info_array[0] = 64;
1368         info_array[1] = 32;
1369         info_array[2] = (unsigned long)capacity / (64 * 32);
1370
1371         /* for disks >1GB do some guessing */
1372         if (info_array[2] >= 1024) {
1373                 int info[3];
1374
1375                 /* try to figure out the geometry from the partition table */
1376                 if (scsicam_bios_param(bdev, capacity, info) < 0 ||
1377                     !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) {
1378                         if (EXT_TRANS) {
1379                                 printk(KERN_NOTICE
1380                                        "aha152x: unable to verify geometry for disk with >1GB.\n"
1381                                        "         using extended translation.\n");
1382                                 info_array[0] = 255;
1383                                 info_array[1] = 63;
1384                                 info_array[2] = (unsigned long)capacity / (255 * 63);
1385                         } else {
1386                                 printk(KERN_NOTICE
1387                                        "aha152x: unable to verify geometry for disk with >1GB.\n"
1388                                        "         Using default translation. Please verify yourself.\n"
1389                                        "         Perhaps you need to enable extended translation in the driver.\n"
1390                                        "         See Documentation/scsi/aha152x.txt for details.\n");
1391                         }
1392                 } else {
1393                         info_array[0] = info[0];
1394                         info_array[1] = info[1];
1395                         info_array[2] = info[2];
1396
1397                         if (info[0] == 255 && !EXT_TRANS) {
1398                                 printk(KERN_NOTICE
1399                                        "aha152x: current partition table is using extended translation.\n"
1400                                        "         using it also, although it's not explicitly enabled.\n");
1401                         }
1402                 }
1403         }
1404
1405         return 0;
1406 }
1407
1408 /*
1409  *  Internal done function
1410  *
1411  */
1412 static void done(struct Scsi_Host *shpnt, int error)
1413 {
1414         if (CURRENT_SC) {
1415                 if(DONE_SC)
1416                         printk(ERR_LEAD "there's already a completed command %p - will cause abort\n", CMDINFO(CURRENT_SC), DONE_SC);
1417
1418                 DONE_SC = CURRENT_SC;
1419                 CURRENT_SC = NULL;
1420                 DONE_SC->result = error;
1421         } else
1422                 printk(KERN_ERR "aha152x: done() called outside of command\n");
1423 }
1424
1425 static struct work_struct aha152x_tq;
1426
1427 /*
1428  * Run service completions on the card with interrupts enabled.
1429  *
1430  */
1431 static void run(struct work_struct *work)
1432 {
1433         struct aha152x_hostdata *hd;
1434
1435         list_for_each_entry(hd, &aha152x_host_list, host_list) {
1436                 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
1437
1438                 is_complete(shost);
1439         }
1440 }
1441
1442 /*
1443  * Interrupt handler
1444  *
1445  */
1446 static irqreturn_t intr(int irqno, void *dev_id)
1447 {
1448         struct Scsi_Host *shpnt = (struct Scsi_Host *)dev_id;
1449         unsigned long flags;
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         if( TESTLO(DMASTAT, INTSTAT) )
1476                 return IRQ_NONE;
1477
1478         /* no more interrupts from the controller, while we're busy.
1479            INTEN is restored by the BH handler */
1480         CLRBITS(DMACNTRL0, INTEN);
1481
1482         DO_LOCK(flags);
1483         if( HOSTDATA(shpnt)->service==0 ) {
1484                 HOSTDATA(shpnt)->service=1;
1485
1486                 /* Poke the BH handler */
1487                 INIT_WORK(&aha152x_tq, run);
1488                 schedule_work(&aha152x_tq);
1489         }
1490         DO_UNLOCK(flags);
1491
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                         struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC;
1561                         struct aha152x_scdata *sc = SCDATA(cmd);
1562
1563 #if 0
1564                         if(HOSTDATA(shpnt)->debug & debug_eh) {
1565                                 printk(ERR_LEAD "received sense: ", CMDINFO(DONE_SC));
1566                                 scsi_print_sense("bh", DONE_SC);
1567                         }
1568 #endif
1569
1570                         /* restore old command */
1571                         memcpy(cmd->cmnd, sc->cmnd, sizeof(sc->cmnd));
1572                         cmd->request_buffer  = sc->request_buffer;
1573                         cmd->request_bufflen = sc->request_bufflen;
1574                         cmd->use_sg          = sc->use_sg;
1575                         cmd->cmd_len         = sc->cmd_len;
1576
1577                         cmd->SCp.Status = 0x02;
1578
1579                         HOSTDATA(shpnt)->commands--;
1580                         if (!HOSTDATA(shpnt)->commands)
1581                                 SETPORT(PORTA, 0);      /* turn led off */
1582                 } else if(DONE_SC->SCp.Status==0x02) {
1583 #if defined(AHA152X_STAT)
1584                         HOSTDATA(shpnt)->busfree_with_check_condition++;
1585 #endif
1586 #if 0
1587                         DPRINTK(debug_eh, ERR_LEAD "CHECK CONDITION found\n", CMDINFO(DONE_SC));
1588 #endif
1589
1590                         if(!(DONE_SC->SCp.Status & not_issued)) {
1591                                 Scsi_Cmnd *ptr = DONE_SC;
1592                                 DONE_SC=NULL;
1593 #if 0
1594                                 DPRINTK(debug_eh, ERR_LEAD "requesting sense\n", CMDINFO(ptr));
1595 #endif
1596
1597                                 ptr->cmnd[0]         = REQUEST_SENSE;
1598                                 ptr->cmnd[1]         = 0;
1599                                 ptr->cmnd[2]         = 0;
1600                                 ptr->cmnd[3]         = 0;
1601                                 ptr->cmnd[4]         = sizeof(ptr->sense_buffer);
1602                                 ptr->cmnd[5]         = 0;
1603                                 ptr->cmd_len         = 6;
1604                                 ptr->use_sg          = 0;
1605                                 ptr->request_buffer  = ptr->sense_buffer;
1606                                 ptr->request_bufflen = sizeof(ptr->sense_buffer);
1607
1608                                 DO_UNLOCK(flags);
1609                                 aha152x_internal_queue(ptr, NULL, check_condition, ptr->scsi_done);
1610                                 DO_LOCK(flags);
1611 #if 0
1612                         } else {
1613                                 DPRINTK(debug_eh, ERR_LEAD "command not issued - CHECK CONDITION ignored\n", CMDINFO(DONE_SC));
1614 #endif
1615                         }
1616                 }
1617
1618                 if(DONE_SC && DONE_SC->scsi_done) {
1619 #if defined(AHA152X_DEBUG)
1620                         int hostno=DONE_SC->device->host->host_no;
1621                         int id=DONE_SC->device->id & 0xf;
1622                         int lun=DONE_SC->device->lun & 0x7;
1623 #endif
1624                         Scsi_Cmnd *ptr = DONE_SC;
1625                         DONE_SC=NULL;
1626
1627                         /* turn led off, when no commands are in the driver */
1628                         HOSTDATA(shpnt)->commands--;
1629                         if (!HOSTDATA(shpnt)->commands)
1630                                 SETPORT(PORTA, 0);      /* turn led off */
1631
1632                         if(ptr->scsi_done != reset_done) {
1633                                 kfree(ptr->host_scribble);
1634                                 ptr->host_scribble=NULL;
1635                         }
1636
1637                         DO_UNLOCK(flags);
1638                         DPRINTK(debug_done, DEBUG_LEAD "calling scsi_done(%p)\n", hostno, id, lun, ptr);
1639                         ptr->scsi_done(ptr);
1640                         DPRINTK(debug_done, DEBUG_LEAD "scsi_done(%p) returned\n", hostno, id, lun, ptr);
1641                         DO_LOCK(flags);
1642                 }
1643
1644                 DONE_SC=NULL;
1645 #if defined(AHA152X_STAT)
1646         } else {
1647                 HOSTDATA(shpnt)->busfree_without_done_command++;
1648 #endif
1649         }
1650
1651         if(ISSUE_SC)
1652                 CURRENT_SC = remove_first_SC(&ISSUE_SC);
1653
1654         DO_UNLOCK(flags);
1655
1656         if(CURRENT_SC) {
1657 #if defined(AHA152X_STAT)
1658                 action++;
1659 #endif
1660                 CURRENT_SC->SCp.phase |= selecting;
1661
1662                 DPRINTK(debug_selection, DEBUG_LEAD "selecting target\n", CMDINFO(CURRENT_SC));
1663
1664                 /* clear selection timeout */
1665                 SETPORT(SSTAT1, SELTO);
1666
1667                 SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id);
1668                 SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER);
1669                 SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0));
1670         } else {
1671 #if defined(AHA152X_STAT)
1672                 HOSTDATA(shpnt)->busfree_without_new_command++;
1673 #endif
1674                 SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0);
1675         }
1676
1677 #if defined(AHA152X_STAT)
1678         if(!action)
1679                 HOSTDATA(shpnt)->busfree_without_any_action++;
1680 #endif
1681 }
1682
1683 /*
1684  * Selection done (OUT)
1685  * - queue IDENTIFY message and SDTR to selected target for message out
1686  *   (ATN asserted automagically via ENAUTOATNO in busfree())
1687  */
1688 static void seldo_run(struct Scsi_Host *shpnt)
1689 {
1690         SETPORT(SCSISIG, 0);
1691         SETPORT(SSTAT1, CLRBUSFREE);
1692         SETPORT(SSTAT1, CLRPHASECHG);
1693
1694         CURRENT_SC->SCp.phase &= ~(selecting|not_issued);
1695
1696         SETPORT(SCSISEQ, 0);
1697
1698         if (TESTLO(SSTAT0, SELDO)) {
1699                 printk(ERR_LEAD "aha152x: passing bus free condition\n", CMDINFO(CURRENT_SC));
1700                 done(shpnt, DID_NO_CONNECT << 16);
1701                 return;
1702         }
1703
1704         SETPORT(SSTAT0, CLRSELDO);
1705
1706         ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1707
1708         if (CURRENT_SC->SCp.phase & aborting) {
1709                 ADDMSGO(ABORT);
1710         } else if (CURRENT_SC->SCp.phase & resetting) {
1711                 ADDMSGO(BUS_DEVICE_RESET);
1712         } else if (SYNCNEG==0 && SYNCHRONOUS) {
1713                 CURRENT_SC->SCp.phase |= syncneg;
1714                 MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8);
1715                 SYNCNEG=1;              /* negotiation in progress */
1716         }
1717
1718         SETRATE(SYNCRATE);
1719 }
1720
1721 /*
1722  * Selection timeout
1723  * - return command to mid-level with failure cause
1724  *
1725  */
1726 static void selto_run(struct Scsi_Host *shpnt)
1727 {
1728         SETPORT(SCSISEQ, 0);
1729         SETPORT(SSTAT1, CLRSELTIMO);
1730
1731         DPRINTK(debug_selection, DEBUG_LEAD "selection timeout\n", CMDINFO(CURRENT_SC));
1732
1733         if(!CURRENT_SC) {
1734                 DPRINTK(debug_selection, DEBUG_LEAD "!CURRENT_SC\n", CMDINFO(CURRENT_SC));
1735                 return;
1736         }
1737
1738         CURRENT_SC->SCp.phase &= ~selecting;
1739
1740         if (CURRENT_SC->SCp.phase & aborted) {
1741                 DPRINTK(debug_selection, DEBUG_LEAD "aborted\n", CMDINFO(CURRENT_SC));
1742                 done(shpnt, DID_ABORT << 16);
1743         } else if (TESTLO(SSTAT0, SELINGO)) {
1744                 DPRINTK(debug_selection, DEBUG_LEAD "arbitration not won\n", CMDINFO(CURRENT_SC));
1745                 done(shpnt, DID_BUS_BUSY << 16);
1746         } else {
1747                 /* ARBITRATION won, but SELECTION failed */
1748                 DPRINTK(debug_selection, DEBUG_LEAD "selection failed\n", CMDINFO(CURRENT_SC));
1749                 done(shpnt, DID_NO_CONNECT << 16);
1750         }
1751 }
1752
1753 /*
1754  * Selection in done
1755  * - put current command back to issue queue
1756  *   (reconnection of a disconnected nexus instead
1757  *    of successful selection out)
1758  *
1759  */
1760 static void seldi_run(struct Scsi_Host *shpnt)
1761 {
1762         int selid;
1763         int target;
1764         unsigned long flags;
1765
1766         SETPORT(SCSISIG, 0);
1767         SETPORT(SSTAT0, CLRSELDI);
1768         SETPORT(SSTAT1, CLRBUSFREE);
1769         SETPORT(SSTAT1, CLRPHASECHG);
1770
1771         if(CURRENT_SC) {
1772                 if(!(CURRENT_SC->SCp.phase & not_issued))
1773                         printk(ERR_LEAD "command should not have been issued yet\n", CMDINFO(CURRENT_SC));
1774
1775                 DPRINTK(debug_selection, ERR_LEAD "command requeued - reselection\n", CMDINFO(CURRENT_SC));
1776
1777                 DO_LOCK(flags);
1778                 append_SC(&ISSUE_SC, CURRENT_SC);
1779                 DO_UNLOCK(flags);
1780
1781                 CURRENT_SC = NULL;
1782         }
1783
1784         if(!DISCONNECTED_SC) {
1785                 DPRINTK(debug_selection, DEBUG_LEAD "unexpected SELDI ", CMDINFO(CURRENT_SC));
1786                 return;
1787         }
1788
1789         RECONN_TARGET=-1;
1790
1791         selid = GETPORT(SELID) & ~(1 << shpnt->this_id);
1792
1793         if (selid==0) {
1794                 printk("aha152x%d: target id unknown (%02x)\n", HOSTNO, selid);
1795                 return;
1796         }
1797
1798         for(target=7; !(selid & (1 << target)); target--)
1799                 ;
1800
1801         if(selid & ~(1 << target)) {
1802                 printk("aha152x%d: multiple targets reconnected (%02x)\n",
1803                        HOSTNO, selid);
1804         }
1805
1806
1807         SETPORT(SCSIID, (shpnt->this_id << OID_) | target);
1808         SETPORT(SCSISEQ, 0);
1809
1810         SETRATE(HOSTDATA(shpnt)->syncrate[target]);
1811
1812         RECONN_TARGET=target;
1813         DPRINTK(debug_selection, DEBUG_LEAD "target %d reselected (%02x).\n", CMDINFO(CURRENT_SC), target, selid);
1814 }
1815
1816 /*
1817  * message in phase
1818  * - handle initial message after reconnection to identify
1819  *   reconnecting nexus
1820  * - queue command on DISCONNECTED_SC on DISCONNECT message
1821  * - set completed flag on COMMAND COMPLETE
1822  *   (other completition code moved to busfree_run)
1823  * - handle response to SDTR
1824  * - clear synchronous transfer agreements on BUS RESET
1825  *
1826  * FIXME: what about SAVE POINTERS, RESTORE POINTERS?
1827  *
1828  */
1829 static void msgi_run(struct Scsi_Host *shpnt)
1830 {
1831         for(;;) {
1832                 int sstat1 = GETPORT(SSTAT1);
1833
1834                 if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT))
1835                         return;
1836
1837                 if(TESTLO(SSTAT0,SPIORDY)) {
1838                         DPRINTK(debug_msgi, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
1839                         return;
1840                 }
1841
1842                 ADDMSGI(GETPORT(SCSIDAT));
1843
1844 #if defined(AHA152X_DEBUG)
1845                 if (HOSTDATA(shpnt)->debug & debug_msgi) {
1846                         printk(INFO_LEAD "inbound message %02x ", CMDINFO(CURRENT_SC), MSGI(0));
1847                         spi_print_msg(&MSGI(0));
1848                         printk("\n");
1849                 }
1850 #endif
1851
1852                 if(!CURRENT_SC) {
1853                         if(LASTSTATE!=seldi) {
1854                                 printk(KERN_ERR "aha152x%d: message in w/o current command not after reselection\n", HOSTNO);
1855                         }
1856
1857                         /*
1858                          * Handle reselection
1859                          */
1860                         if(!(MSGI(0) & IDENTIFY_BASE)) {
1861                                 printk(KERN_ERR "aha152x%d: target didn't identify after reselection\n", HOSTNO);
1862                                 continue;
1863                         }
1864
1865                         CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f);
1866
1867                         if (!CURRENT_SC) {
1868                                 show_queues(shpnt);
1869                                 printk(KERN_ERR "aha152x%d: no disconnected command for target %d/%d\n", HOSTNO, RECONN_TARGET, MSGI(0) & 0x3f);
1870                                 continue;
1871                         }
1872
1873                         DPRINTK(debug_msgi, DEBUG_LEAD "target reconnected\n", CMDINFO(CURRENT_SC));
1874
1875                         CURRENT_SC->SCp.Message = MSGI(0);
1876                         CURRENT_SC->SCp.phase &= ~disconnected;
1877
1878                         MSGILEN=0;
1879
1880                         /* next message if any */
1881                         continue;
1882                 }
1883
1884                 CURRENT_SC->SCp.Message = MSGI(0);
1885
1886                 switch (MSGI(0)) {
1887                 case DISCONNECT:
1888                         if (!RECONNECT)
1889                                 printk(WARN_LEAD "target was not allowed to disconnect\n", CMDINFO(CURRENT_SC));
1890
1891                         CURRENT_SC->SCp.phase |= disconnected;
1892                         break;
1893
1894                 case COMMAND_COMPLETE:
1895                         if(CURRENT_SC->SCp.phase & completed)
1896                                 DPRINTK(debug_msgi, DEBUG_LEAD "again COMMAND COMPLETE\n", CMDINFO(CURRENT_SC));
1897
1898                         CURRENT_SC->SCp.phase |= completed;
1899                         break;
1900
1901                 case MESSAGE_REJECT:
1902                         if (SYNCNEG==1) {
1903                                 printk(INFO_LEAD "Synchronous Data Transfer Request was rejected\n", CMDINFO(CURRENT_SC));
1904                                 SYNCNEG=2;      /* negotiation completed */
1905                         } else
1906                                 printk(INFO_LEAD "inbound message (MESSAGE REJECT)\n", CMDINFO(CURRENT_SC));
1907                         break;
1908
1909                 case SAVE_POINTERS:
1910                         break;
1911
1912                 case RESTORE_POINTERS:
1913                         break;
1914
1915                 case EXTENDED_MESSAGE:
1916                         if(MSGILEN<2 || MSGILEN<MSGI(1)+2) {
1917                                 /* not yet completed */
1918                                 continue;
1919                         }
1920
1921                         switch (MSGI(2)) {
1922                         case EXTENDED_SDTR:
1923                                 {
1924                                         long ticks;
1925
1926                                         if (MSGI(1) != 3) {
1927                                                 printk(ERR_LEAD "SDTR message length!=3\n", CMDINFO(CURRENT_SC));
1928                                                 break;
1929                                         }
1930
1931                                         if (!HOSTDATA(shpnt)->synchronous)
1932                                                 break;
1933
1934                                         printk(INFO_LEAD, CMDINFO(CURRENT_SC));
1935                                         spi_print_msg(&MSGI(0));
1936                                         printk("\n");
1937
1938                                         ticks = (MSGI(3) * 4 + 49) / 50;
1939
1940                                         if (syncneg) {
1941                                                 /* negotiation in progress */
1942                                                 if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) {
1943                                                         ADDMSGO(MESSAGE_REJECT);
1944                                                         printk(INFO_LEAD "received Synchronous Data Transfer Request invalid - rejected\n", CMDINFO(CURRENT_SC));
1945                                                         break;
1946                                                 }
1947
1948                                                 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1949                                         } else if (ticks <= 9 && MSGI(4) >= 1) {
1950                                                 ADDMSGO(EXTENDED_MESSAGE);
1951                                                 ADDMSGO(3);
1952                                                 ADDMSGO(EXTENDED_SDTR);
1953                                                 if (ticks < 4) {
1954                                                         ticks = 4;
1955                                                         ADDMSGO(50);
1956                                                 } else
1957                                                         ADDMSGO(MSGI(3));
1958
1959                                                 if (MSGI(4) > 8)
1960                                                         MSGI(4) = 8;
1961
1962                                                 ADDMSGO(MSGI(4));
1963
1964                                                 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1965                                         } else {
1966                                                 /* requested SDTR is too slow, do it asynchronously */
1967                                                 printk(INFO_LEAD "Synchronous Data Transfer Request too slow - Rejecting\n", CMDINFO(CURRENT_SC));
1968                                                 ADDMSGO(MESSAGE_REJECT);
1969                                         }
1970
1971                                         SYNCNEG=2;              /* negotiation completed */
1972                                         SETRATE(SYNCRATE);
1973                                 }
1974                                 break;
1975
1976                         case BUS_DEVICE_RESET:
1977                                 {
1978                                         int i;
1979
1980                                         for(i=0; i<8; i++) {
1981                                                 HOSTDATA(shpnt)->syncrate[i]=0;
1982                                                 HOSTDATA(shpnt)->syncneg[i]=0;
1983                                         }
1984
1985                                 }
1986                                 break;
1987
1988                         case EXTENDED_MODIFY_DATA_POINTER:
1989                         case EXTENDED_EXTENDED_IDENTIFY:
1990                         case EXTENDED_WDTR:
1991                         default:
1992                                 ADDMSGO(MESSAGE_REJECT);
1993                                 break;
1994                         }
1995                         break;
1996                 }
1997
1998                 MSGILEN=0;
1999         }
2000 }
2001
2002 static void msgi_end(struct Scsi_Host *shpnt)
2003 {
2004         if(MSGILEN>0)
2005                 printk(WARN_LEAD "target left before message completed (%d)\n", CMDINFO(CURRENT_SC), MSGILEN);
2006
2007         if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE)) {
2008                 DPRINTK(debug_msgi, DEBUG_LEAD "msgo pending\n", CMDINFO(CURRENT_SC));
2009                 SETPORT(SCSISIG, P_MSGI | SIG_ATNO);
2010         }
2011 }
2012
2013 /*
2014  * message out phase
2015  *
2016  */
2017 static void msgo_init(struct Scsi_Host *shpnt)
2018 {
2019         if(MSGOLEN==0) {
2020                 if((CURRENT_SC->SCp.phase & syncneg) && SYNCNEG==2 && SYNCRATE==0) {
2021                         ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
2022                 } else {
2023                         printk(INFO_LEAD "unexpected MESSAGE OUT phase; rejecting\n", CMDINFO(CURRENT_SC));
2024                         ADDMSGO(MESSAGE_REJECT);
2025                 }
2026         }
2027
2028 #if defined(AHA152X_DEBUG)
2029         if(HOSTDATA(shpnt)->debug & debug_msgo) {
2030                 int i;
2031
2032                 printk(DEBUG_LEAD "messages( ", CMDINFO(CURRENT_SC));
2033                 for (i=0; i<MSGOLEN; i+=spi_print_msg(&MSGO(i)), printk(" "))
2034                         ;
2035                 printk(")\n");
2036         }
2037 #endif
2038 }
2039
2040 /*
2041  * message out phase
2042  *
2043  */
2044 static void msgo_run(struct Scsi_Host *shpnt)
2045 {
2046         if(MSGO_I==MSGOLEN)
2047                 DPRINTK(debug_msgo, DEBUG_LEAD "messages all sent (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO_I, MSGOLEN);
2048
2049         while(MSGO_I<MSGOLEN) {
2050                 DPRINTK(debug_msgo, DEBUG_LEAD "message byte %02x (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO(MSGO_I), MSGO_I, MSGOLEN);
2051
2052                 if(TESTLO(SSTAT0, SPIORDY)) {
2053                         DPRINTK(debug_msgo, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
2054                         return;
2055                 }
2056
2057                 if (MSGO_I==MSGOLEN-1) {
2058                         /* Leave MESSAGE OUT after transfer */
2059                         SETPORT(SSTAT1, CLRATNO);
2060                 }
2061
2062
2063                 if (MSGO(MSGO_I) & IDENTIFY_BASE)
2064                         CURRENT_SC->SCp.phase |= identified;
2065
2066                 if (MSGO(MSGO_I)==ABORT)
2067                         CURRENT_SC->SCp.phase |= aborted;
2068
2069                 if (MSGO(MSGO_I)==BUS_DEVICE_RESET)
2070                         CURRENT_SC->SCp.phase |= resetted;
2071
2072                 SETPORT(SCSIDAT, MSGO(MSGO_I++));
2073         }
2074 }
2075
2076 static void msgo_end(struct Scsi_Host *shpnt)
2077 {
2078         if(MSGO_I<MSGOLEN) {
2079                 printk(ERR_LEAD "message sent incompletely (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO_I, MSGOLEN);
2080                 if(SYNCNEG==1) {
2081                         printk(INFO_LEAD "Synchronous Data Transfer Request was rejected\n", CMDINFO(CURRENT_SC));
2082                         SYNCNEG=2;
2083                 }
2084         }
2085
2086         MSGO_I  = 0;
2087         MSGOLEN = 0;
2088 }
2089
2090 /*
2091  * command phase
2092  *
2093  */
2094 static void cmd_init(struct Scsi_Host *shpnt)
2095 {
2096         if (CURRENT_SC->SCp.sent_command) {
2097                 printk(ERR_LEAD "command already sent\n", CMDINFO(CURRENT_SC));
2098                 done(shpnt, DID_ERROR << 16);
2099                 return;
2100         }
2101
2102 #if defined(AHA152X_DEBUG)
2103         if (HOSTDATA(shpnt)->debug & debug_cmd) {
2104                 printk(DEBUG_LEAD "cmd_init: ", CMDINFO(CURRENT_SC));
2105                 __scsi_print_command(CURRENT_SC->cmnd);
2106         }
2107 #endif
2108
2109         CMD_I=0;
2110 }
2111
2112 /*
2113  * command phase
2114  *
2115  */
2116 static void cmd_run(struct Scsi_Host *shpnt)
2117 {
2118         if(CMD_I==CURRENT_SC->cmd_len) {
2119                 DPRINTK(debug_cmd, DEBUG_LEAD "command already completely sent (%d/%d)", CMDINFO(CURRENT_SC), CMD_I, CURRENT_SC->cmd_len);
2120                 disp_ports(shpnt);
2121         }
2122
2123         while(CMD_I<CURRENT_SC->cmd_len) {
2124                 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);
2125
2126                 if(TESTLO(SSTAT0, SPIORDY)) {
2127                         DPRINTK(debug_cmd, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
2128                         return;
2129                 }
2130
2131                 SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]);
2132         }
2133 }
2134
2135 static void cmd_end(struct Scsi_Host *shpnt)
2136 {
2137         if(CMD_I<CURRENT_SC->cmd_len)
2138                 printk(ERR_LEAD "command sent incompletely (%d/%d)\n", CMDINFO(CURRENT_SC), CMD_I, CURRENT_SC->cmd_len);
2139         else
2140                 CURRENT_SC->SCp.sent_command++;
2141 }
2142
2143 /*
2144  * status phase
2145  *
2146  */
2147 static void status_run(struct Scsi_Host *shpnt)
2148 {
2149         if(TESTLO(SSTAT0,SPIORDY)) {
2150                 DPRINTK(debug_status, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
2151                 return;
2152         }
2153
2154         CURRENT_SC->SCp.Status = GETPORT(SCSIDAT);
2155
2156 #if defined(AHA152X_DEBUG)
2157         if (HOSTDATA(shpnt)->debug & debug_status) {
2158                 printk(DEBUG_LEAD "inbound status %02x ", CMDINFO(CURRENT_SC), CURRENT_SC->SCp.Status);
2159                 scsi_print_status(CURRENT_SC->SCp.Status);
2160                 printk("\n");
2161         }
2162 #endif
2163 }
2164
2165 /*
2166  * data in phase
2167  *
2168  */
2169 static void datai_init(struct Scsi_Host *shpnt)
2170 {
2171         SETPORT(DMACNTRL0, RSTFIFO);
2172         SETPORT(DMACNTRL0, RSTFIFO|ENDMA);
2173
2174         SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2175         SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
2176
2177         SETPORT(SIMODE0, 0);
2178         SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE);
2179
2180         DATA_LEN=0;
2181         DPRINTK(debug_datai,
2182                 DEBUG_LEAD "datai_init: request_bufflen=%d resid=%d\n",
2183                 CMDINFO(CURRENT_SC), CURRENT_SC->request_bufflen, CURRENT_SC->resid);
2184 }
2185
2186 static void datai_run(struct Scsi_Host *shpnt)
2187 {
2188         unsigned long the_time;
2189         int fifodata, data_count;
2190
2191         /*
2192          * loop while the phase persists or the fifos are not empty
2193          *
2194          */
2195         while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) {
2196                 /* FIXME: maybe this should be done by setting up
2197                  * STCNT to trigger ENSWRAP interrupt, instead of
2198                  * polling for DFIFOFULL
2199                  */
2200                 the_time=jiffies + 100*HZ;
2201                 while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time))
2202                         barrier();
2203
2204                 if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) {
2205                         printk(ERR_LEAD "datai timeout", CMDINFO(CURRENT_SC));
2206                         disp_ports(shpnt);
2207                         break;
2208                 }
2209
2210                 if(TESTHI(DMASTAT, DFIFOFULL)) {
2211                         fifodata = 128;
2212                 } else {
2213                         the_time=jiffies + 100*HZ;
2214                         while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time))
2215                                 barrier();
2216
2217                         if(TESTLO(SSTAT2, SEMPTY)) {
2218                                 printk(ERR_LEAD "datai sempty timeout", CMDINFO(CURRENT_SC));
2219                                 disp_ports(shpnt);
2220                                 break;
2221                         }
2222
2223                         fifodata = GETPORT(FIFOSTAT);
2224                 }
2225
2226                 if(CURRENT_SC->SCp.this_residual>0) {
2227                         while(fifodata>0 && CURRENT_SC->SCp.this_residual>0) {
2228                                 data_count = fifodata>CURRENT_SC->SCp.this_residual ?
2229                                                 CURRENT_SC->SCp.this_residual :
2230                                                 fifodata;
2231                                 fifodata -= data_count;
2232
2233                                 if(data_count & 1) {
2234                                         DPRINTK(debug_datai, DEBUG_LEAD "8bit\n", CMDINFO(CURRENT_SC));
2235                                         SETPORT(DMACNTRL0, ENDMA|_8BIT);
2236                                         *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT);
2237                                         CURRENT_SC->SCp.this_residual--;
2238                                         DATA_LEN++;
2239                                         SETPORT(DMACNTRL0, ENDMA);
2240                                 }
2241
2242                                 if(data_count > 1) {
2243                                         DPRINTK(debug_datai, DEBUG_LEAD "16bit(%d)\n", CMDINFO(CURRENT_SC), data_count);
2244                                         data_count >>= 1;
2245                                         insw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2246                                         CURRENT_SC->SCp.ptr           += 2 * data_count;
2247                                         CURRENT_SC->SCp.this_residual -= 2 * data_count;
2248                                         DATA_LEN                      += 2 * data_count;
2249                                 }
2250
2251                                 if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
2252                                         /* advance to next buffer */
2253                                         CURRENT_SC->SCp.buffers_residual--;
2254                                         CURRENT_SC->SCp.buffer++;
2255                                         CURRENT_SC->SCp.ptr           = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2256                                         CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2257                                 }
2258                         }
2259                 } else if(fifodata>0) {
2260                         printk(ERR_LEAD "no buffers left for %d(%d) bytes (data overrun!?)\n", CMDINFO(CURRENT_SC), fifodata, GETPORT(FIFOSTAT));
2261                         SETPORT(DMACNTRL0, ENDMA|_8BIT);
2262                         while(fifodata>0) {
2263                                 int data;
2264                                 data=GETPORT(DATAPORT);
2265                                 DPRINTK(debug_datai, DEBUG_LEAD "data=%02x\n", CMDINFO(CURRENT_SC), data);
2266                                 fifodata--;
2267                                 DATA_LEN++;
2268                         }
2269                         SETPORT(DMACNTRL0, ENDMA|_8BIT);
2270                 }
2271         }
2272
2273         if(TESTLO(DMASTAT, INTSTAT) ||
2274            TESTLO(DMASTAT, DFIFOEMP) ||
2275            TESTLO(SSTAT2, SEMPTY) ||
2276            GETPORT(FIFOSTAT)>0) {
2277                 /*
2278                  * something went wrong, if there's something left in the fifos
2279                  * or the phase didn't change
2280                  */
2281                 printk(ERR_LEAD "fifos should be empty and phase should have changed\n", CMDINFO(CURRENT_SC));
2282                 disp_ports(shpnt);
2283         }
2284
2285         if(DATA_LEN!=GETSTCNT()) {
2286                 printk(ERR_LEAD
2287                        "manual transfer count differs from automatic (count=%d;stcnt=%d;diff=%d;fifostat=%d)",
2288                        CMDINFO(CURRENT_SC), DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN, GETPORT(FIFOSTAT));
2289                 disp_ports(shpnt);
2290                 mdelay(10000);
2291         }
2292 }
2293
2294 static void datai_end(struct Scsi_Host *shpnt)
2295 {
2296         CURRENT_SC->resid -= GETSTCNT();
2297
2298         DPRINTK(debug_datai,
2299                 DEBUG_LEAD "datai_end: request_bufflen=%d resid=%d stcnt=%d\n",
2300                 CMDINFO(CURRENT_SC), CURRENT_SC->request_bufflen, CURRENT_SC->resid, GETSTCNT());
2301
2302         SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2303         SETPORT(DMACNTRL0, 0);
2304 }
2305
2306 /*
2307  * data out phase
2308  *
2309  */
2310 static void datao_init(struct Scsi_Host *shpnt)
2311 {
2312         SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO);
2313         SETPORT(DMACNTRL0, WRITE_READ | ENDMA);
2314
2315         SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2316         SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
2317
2318         SETPORT(SIMODE0, 0);
2319         SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE );
2320
2321         DATA_LEN = CURRENT_SC->resid;
2322
2323         DPRINTK(debug_datao,
2324                 DEBUG_LEAD "datao_init: request_bufflen=%d; resid=%d\n",
2325                 CMDINFO(CURRENT_SC), CURRENT_SC->request_bufflen, CURRENT_SC->resid);
2326 }
2327
2328 static void datao_run(struct Scsi_Host *shpnt)
2329 {
2330         unsigned long the_time;
2331         int data_count;
2332
2333         /* until phase changes or all data sent */
2334         while(TESTLO(DMASTAT, INTSTAT) && CURRENT_SC->SCp.this_residual>0) {
2335                 data_count = 128;
2336                 if(data_count > CURRENT_SC->SCp.this_residual)
2337                         data_count=CURRENT_SC->SCp.this_residual;
2338
2339                 if(TESTLO(DMASTAT, DFIFOEMP)) {
2340                         printk(ERR_LEAD "datao fifo not empty (%d)", CMDINFO(CURRENT_SC), GETPORT(FIFOSTAT));
2341                         disp_ports(shpnt);
2342                         break;
2343                 }
2344
2345                 if(data_count & 1) {
2346                         SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT);
2347                         SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++);
2348                         CURRENT_SC->SCp.this_residual--;
2349                         CURRENT_SC->resid--;
2350                         SETPORT(DMACNTRL0,WRITE_READ|ENDMA);
2351                 }
2352
2353                 if(data_count > 1) {
2354                         data_count >>= 1;
2355                         outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2356                         CURRENT_SC->SCp.ptr           += 2 * data_count;
2357                         CURRENT_SC->SCp.this_residual -= 2 * data_count;
2358                         CURRENT_SC->resid             -= 2 * data_count;
2359                 }
2360
2361                 if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
2362                         /* advance to next buffer */
2363                         CURRENT_SC->SCp.buffers_residual--;
2364                         CURRENT_SC->SCp.buffer++;
2365                         CURRENT_SC->SCp.ptr           = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2366                         CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2367                 }
2368
2369                 the_time=jiffies + 100*HZ;
2370                 while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time))
2371                         barrier();
2372
2373                 if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) {
2374                         printk(ERR_LEAD "dataout timeout", CMDINFO(CURRENT_SC));
2375                         disp_ports(shpnt);
2376                         break;
2377                 }
2378         }
2379 }
2380
2381 static void datao_end(struct Scsi_Host *shpnt)
2382 {
2383         if(TESTLO(DMASTAT, DFIFOEMP)) {
2384                 int data_count = (DATA_LEN - CURRENT_SC->resid) - GETSTCNT();
2385
2386                 DPRINTK(debug_datao, DEBUG_LEAD "datao: %d bytes to resend (%d written, %d transferred)\n",
2387                         CMDINFO(CURRENT_SC),
2388                         data_count,
2389                         DATA_LEN-CURRENT_SC->resid,
2390                         GETSTCNT());
2391
2392                 CURRENT_SC->resid += data_count;
2393
2394                 if(CURRENT_SC->use_sg) {
2395                         data_count -= CURRENT_SC->SCp.ptr - SG_ADDRESS(CURRENT_SC->SCp.buffer);
2396                         while(data_count>0) {
2397                                 CURRENT_SC->SCp.buffer--;
2398                                 CURRENT_SC->SCp.buffers_residual++;
2399                                 data_count -= CURRENT_SC->SCp.buffer->length;
2400                         }
2401                         CURRENT_SC->SCp.ptr           = SG_ADDRESS(CURRENT_SC->SCp.buffer) - data_count;
2402                         CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length + data_count;
2403                 } else {
2404                         CURRENT_SC->SCp.ptr           -= data_count;
2405                         CURRENT_SC->SCp.this_residual += data_count;
2406                 }
2407         }
2408
2409         DPRINTK(debug_datao, DEBUG_LEAD "datao_end: request_bufflen=%d; resid=%d; stcnt=%d\n",
2410                 CMDINFO(CURRENT_SC),
2411                 CURRENT_SC->request_bufflen,
2412                 CURRENT_SC->resid,
2413                 GETSTCNT());
2414
2415         SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
2416         SETPORT(SXFRCTL0, CH1);
2417
2418         SETPORT(DMACNTRL0, 0);
2419 }
2420
2421 /*
2422  * figure out what state we're in
2423  *
2424  */
2425 static int update_state(struct Scsi_Host *shpnt)
2426 {
2427         int dataphase=0;
2428         unsigned int stat0 = GETPORT(SSTAT0);
2429         unsigned int stat1 = GETPORT(SSTAT1);
2430
2431         PREVSTATE = STATE;
2432         STATE=unknown;
2433
2434         if(stat1 & SCSIRSTI) {
2435                 STATE=rsti;
2436                 SETPORT(SCSISEQ,0);
2437                 SETPORT(SSTAT1,SCSIRSTI);
2438         } else if(stat0 & SELDI && PREVSTATE==busfree) {
2439                 STATE=seldi;
2440         } else if(stat0 & SELDO && CURRENT_SC && (CURRENT_SC->SCp.phase & selecting)) {
2441                 STATE=seldo;
2442         } else if(stat1 & SELTO) {
2443                 STATE=selto;
2444         } else if(stat1 & BUSFREE) {
2445                 STATE=busfree;
2446                 SETPORT(SSTAT1,BUSFREE);
2447         } else if(stat1 & SCSIPERR) {
2448                 STATE=parerr;
2449                 SETPORT(SSTAT1,SCSIPERR);
2450         } else if(stat1 & REQINIT) {
2451                 switch(GETPORT(SCSISIG) & P_MASK) {
2452                 case P_MSGI:    STATE=msgi;     break;
2453                 case P_MSGO:    STATE=msgo;     break;
2454                 case P_DATAO:   STATE=datao;    break;
2455                 case P_DATAI:   STATE=datai;    break;
2456                 case P_STATUS:  STATE=status;   break;
2457                 case P_CMD:     STATE=cmd;      break;
2458                 }
2459                 dataphase=1;
2460         }
2461
2462         if((stat0 & SELDI) && STATE!=seldi && !dataphase) {
2463                 printk(INFO_LEAD "reselection missed?", CMDINFO(CURRENT_SC));
2464                 disp_ports(shpnt);
2465         }
2466
2467         if(STATE!=PREVSTATE) {
2468                 LASTSTATE=PREVSTATE;
2469         }
2470
2471         return dataphase;
2472 }
2473
2474 /*
2475  * handle parity error
2476  *
2477  * FIXME: in which phase?
2478  *
2479  */
2480 static void parerr_run(struct Scsi_Host *shpnt)
2481 {
2482         printk(ERR_LEAD "parity error\n", CMDINFO(CURRENT_SC));
2483         done(shpnt, DID_PARITY << 16);
2484 }
2485
2486 /*
2487  * handle reset in
2488  *
2489  */
2490 static void rsti_run(struct Scsi_Host *shpnt)
2491 {
2492         Scsi_Cmnd *ptr;
2493
2494         printk(KERN_NOTICE "aha152x%d: scsi reset in\n", HOSTNO);
2495
2496         ptr=DISCONNECTED_SC;
2497         while(ptr) {
2498                 Scsi_Cmnd *next = SCNEXT(ptr);
2499
2500                 if (!ptr->device->soft_reset) {
2501                         remove_SC(&DISCONNECTED_SC, ptr);
2502
2503                         kfree(ptr->host_scribble);
2504                         ptr->host_scribble=NULL;
2505
2506                         ptr->result =  DID_RESET << 16;
2507                         ptr->scsi_done(ptr);
2508                 }
2509
2510                 ptr = next;
2511         }
2512
2513         if(CURRENT_SC && !CURRENT_SC->device->soft_reset)
2514                 done(shpnt, DID_RESET << 16 );
2515 }
2516
2517
2518 /*
2519  * bottom-half handler
2520  *
2521  */
2522 static void is_complete(struct Scsi_Host *shpnt)
2523 {
2524         int dataphase;
2525         unsigned long flags;
2526         int pending;
2527
2528         if(!shpnt)
2529                 return;
2530
2531         DO_LOCK(flags);
2532
2533         if( HOSTDATA(shpnt)->service==0 )  {
2534                 DO_UNLOCK(flags);
2535                 return;
2536         }
2537
2538         HOSTDATA(shpnt)->service = 0;
2539
2540         if(HOSTDATA(shpnt)->in_intr) {
2541                 DO_UNLOCK(flags);
2542                 /* aha152x_error never returns.. */
2543                 aha152x_error(shpnt, "bottom-half already running!?");
2544         }
2545         HOSTDATA(shpnt)->in_intr++;
2546
2547         /*
2548          * loop while there are interrupt conditions pending
2549          *
2550          */
2551         do {
2552                 unsigned long start = jiffies;
2553                 DO_UNLOCK(flags);
2554
2555                 dataphase=update_state(shpnt);
2556
2557                 DPRINTK(debug_phases, LEAD "start %s %s(%s)\n", CMDINFO(CURRENT_SC), states[STATE].name, states[PREVSTATE].name, states[LASTSTATE].name);
2558
2559                 /*
2560                  * end previous state
2561                  *
2562                  */
2563                 if(PREVSTATE!=STATE && states[PREVSTATE].end)
2564                         states[PREVSTATE].end(shpnt);
2565
2566                 /*
2567                  * disable SPIO mode if previous phase used it
2568                  * and this one doesn't
2569                  *
2570                  */
2571                 if(states[PREVSTATE].spio && !states[STATE].spio) {
2572                         SETPORT(SXFRCTL0, CH1);
2573                         SETPORT(DMACNTRL0, 0);
2574                         if(CURRENT_SC)
2575                                 CURRENT_SC->SCp.phase &= ~spiordy;
2576                 }
2577
2578                 /*
2579                  * accept current dataphase phase
2580                  *
2581                  */
2582                 if(dataphase) {
2583                         SETPORT(SSTAT0, REQINIT);
2584                         SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK);
2585                         SETPORT(SSTAT1, PHASECHG);
2586                 }
2587
2588                 /*
2589                  * enable SPIO mode if previous didn't use it
2590                  * and this one does
2591                  *
2592                  */
2593                 if(!states[PREVSTATE].spio && states[STATE].spio) {
2594                         SETPORT(DMACNTRL0, 0);
2595                         SETPORT(SXFRCTL0, CH1|SPIOEN);
2596                         if(CURRENT_SC)
2597                                 CURRENT_SC->SCp.phase |= spiordy;
2598                 }
2599
2600                 /*
2601                  * initialize for new state
2602                  *
2603                  */
2604                 if(PREVSTATE!=STATE && states[STATE].init)
2605                         states[STATE].init(shpnt);
2606
2607                 /*
2608                  * handle current state
2609                  *
2610                  */
2611                 if(states[STATE].run)
2612                         states[STATE].run(shpnt);
2613                 else
2614                         printk(ERR_LEAD "unexpected state (%x)\n", CMDINFO(CURRENT_SC), STATE);
2615
2616                 /*
2617                  * setup controller to interrupt on
2618                  * the next expected condition and
2619                  * loop if it's already there
2620                  *
2621                  */
2622                 DO_LOCK(flags);
2623                 pending=setup_expected_interrupts(shpnt);
2624 #if defined(AHA152X_STAT)
2625                 HOSTDATA(shpnt)->count[STATE]++;
2626                 if(PREVSTATE!=STATE)
2627                         HOSTDATA(shpnt)->count_trans[STATE]++;
2628                 HOSTDATA(shpnt)->time[STATE] += jiffies-start;
2629 #endif
2630
2631                 DPRINTK(debug_phases, LEAD "end %s %s(%s)\n", CMDINFO(CURRENT_SC), states[STATE].name, states[PREVSTATE].name, states[LASTSTATE].name);
2632         } while(pending);
2633
2634         /*
2635          * enable interrupts and leave bottom-half
2636          *
2637          */
2638         HOSTDATA(shpnt)->in_intr--;
2639         SETBITS(DMACNTRL0, INTEN);
2640         DO_UNLOCK(flags);
2641 }
2642
2643
2644 /*
2645  * Dump the current driver status and panic
2646  */
2647 static void aha152x_error(struct Scsi_Host *shpnt, char *msg)
2648 {
2649         printk(KERN_EMERG "\naha152x%d: %s\n", HOSTNO, msg);
2650         show_queues(shpnt);
2651         panic("aha152x panic\n");
2652 }
2653
2654 /*
2655  * Display registers of AIC-6260
2656  */
2657 static void disp_ports(struct Scsi_Host *shpnt)
2658 {
2659 #if defined(AHA152X_DEBUG)
2660         int s;
2661
2662         printk("\n%s: %s(%s) ",
2663                 CURRENT_SC ? "busy" : "waiting",
2664                 states[STATE].name,
2665                 states[PREVSTATE].name);
2666
2667         s = GETPORT(SCSISEQ);
2668         printk("SCSISEQ( ");
2669         if (s & TEMODEO)
2670                 printk("TARGET MODE ");
2671         if (s & ENSELO)
2672                 printk("SELO ");
2673         if (s & ENSELI)
2674                 printk("SELI ");
2675         if (s & ENRESELI)
2676                 printk("RESELI ");
2677         if (s & ENAUTOATNO)
2678                 printk("AUTOATNO ");
2679         if (s & ENAUTOATNI)
2680                 printk("AUTOATNI ");
2681         if (s & ENAUTOATNP)
2682                 printk("AUTOATNP ");
2683         if (s & SCSIRSTO)
2684                 printk("SCSIRSTO ");
2685         printk(");");
2686
2687         printk(" SCSISIG(");
2688         s = GETPORT(SCSISIG);
2689         switch (s & P_MASK) {
2690         case P_DATAO:
2691                 printk("DATA OUT");
2692                 break;
2693         case P_DATAI:
2694                 printk("DATA IN");
2695                 break;
2696         case P_CMD:
2697                 printk("COMMAND");
2698                 break;
2699         case P_STATUS:
2700                 printk("STATUS");
2701                 break;
2702         case P_MSGO:
2703                 printk("MESSAGE OUT");
2704                 break;
2705         case P_MSGI:
2706                 printk("MESSAGE IN");
2707                 break;
2708         default:
2709                 printk("*invalid*");
2710                 break;
2711         }
2712
2713         printk("); ");
2714
2715         printk("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");
2716
2717         printk("SSTAT( ");
2718         s = GETPORT(SSTAT0);
2719         if (s & TARGET)
2720                 printk("TARGET ");
2721         if (s & SELDO)
2722                 printk("SELDO ");
2723         if (s & SELDI)
2724                 printk("SELDI ");
2725         if (s & SELINGO)
2726                 printk("SELINGO ");
2727         if (s & SWRAP)
2728                 printk("SWRAP ");
2729         if (s & SDONE)
2730                 printk("SDONE ");
2731         if (s & SPIORDY)
2732                 printk("SPIORDY ");
2733         if (s & DMADONE)
2734                 printk("DMADONE ");
2735
2736         s = GETPORT(SSTAT1);
2737         if (s & SELTO)
2738                 printk("SELTO ");
2739         if (s & ATNTARG)
2740                 printk("ATNTARG ");
2741         if (s & SCSIRSTI)
2742                 printk("SCSIRSTI ");
2743         if (s & PHASEMIS)
2744                 printk("PHASEMIS ");
2745         if (s & BUSFREE)
2746                 printk("BUSFREE ");
2747         if (s & SCSIPERR)
2748                 printk("SCSIPERR ");
2749         if (s & PHASECHG)
2750                 printk("PHASECHG ");
2751         if (s & REQINIT)
2752                 printk("REQINIT ");
2753         printk("); ");
2754
2755
2756         printk("SSTAT( ");
2757
2758         s = GETPORT(SSTAT0) & GETPORT(SIMODE0);
2759
2760         if (s & TARGET)
2761                 printk("TARGET ");
2762         if (s & SELDO)
2763                 printk("SELDO ");
2764         if (s & SELDI)
2765                 printk("SELDI ");
2766         if (s & SELINGO)
2767                 printk("SELINGO ");
2768         if (s & SWRAP)
2769                 printk("SWRAP ");
2770         if (s & SDONE)
2771                 printk("SDONE ");
2772         if (s & SPIORDY)
2773                 printk("SPIORDY ");
2774         if (s & DMADONE)
2775                 printk("DMADONE ");
2776
2777         s = GETPORT(SSTAT1) & GETPORT(SIMODE1);
2778
2779         if (s & SELTO)
2780                 printk("SELTO ");
2781         if (s & ATNTARG)
2782                 printk("ATNTARG ");
2783         if (s & SCSIRSTI)
2784                 printk("SCSIRSTI ");
2785         if (s & PHASEMIS)
2786                 printk("PHASEMIS ");
2787         if (s & BUSFREE)
2788                 printk("BUSFREE ");
2789         if (s & SCSIPERR)
2790                 printk("SCSIPERR ");
2791         if (s & PHASECHG)
2792                 printk("PHASECHG ");
2793         if (s & REQINIT)
2794                 printk("REQINIT ");
2795         printk("); ");
2796
2797         printk("SXFRCTL0( ");
2798
2799         s = GETPORT(SXFRCTL0);
2800         if (s & SCSIEN)
2801                 printk("SCSIEN ");
2802         if (s & DMAEN)
2803                 printk("DMAEN ");
2804         if (s & CH1)
2805                 printk("CH1 ");
2806         if (s & CLRSTCNT)
2807                 printk("CLRSTCNT ");
2808         if (s & SPIOEN)
2809                 printk("SPIOEN ");
2810         if (s & CLRCH1)
2811                 printk("CLRCH1 ");
2812         printk("); ");
2813
2814         printk("SIGNAL( ");
2815
2816         s = GETPORT(SCSISIG);
2817         if (s & SIG_ATNI)
2818                 printk("ATNI ");
2819         if (s & SIG_SELI)
2820                 printk("SELI ");
2821         if (s & SIG_BSYI)
2822                 printk("BSYI ");
2823         if (s & SIG_REQI)
2824                 printk("REQI ");
2825         if (s & SIG_ACKI)
2826                 printk("ACKI ");
2827         printk("); ");
2828
2829         printk("SELID (%02x), ", GETPORT(SELID));
2830
2831         printk("STCNT (%d), ", GETSTCNT());
2832
2833         printk("SSTAT2( ");
2834
2835         s = GETPORT(SSTAT2);
2836         if (s & SOFFSET)
2837                 printk("SOFFSET ");
2838         if (s & SEMPTY)
2839                 printk("SEMPTY ");
2840         if (s & SFULL)
2841                 printk("SFULL ");
2842         printk("); SFCNT (%d); ", s & (SFULL | SFCNT));
2843
2844         s = GETPORT(SSTAT3);
2845         printk("SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);
2846
2847         printk("SSTAT4( ");
2848         s = GETPORT(SSTAT4);
2849         if (s & SYNCERR)
2850                 printk("SYNCERR ");
2851         if (s & FWERR)
2852                 printk("FWERR ");
2853         if (s & FRERR)
2854                 printk("FRERR ");
2855         printk("); ");
2856
2857         printk("DMACNTRL0( ");
2858         s = GETPORT(DMACNTRL0);
2859         printk("%s ", s & _8BIT ? "8BIT" : "16BIT");
2860         printk("%s ", s & DMA ? "DMA" : "PIO");
2861         printk("%s ", s & WRITE_READ ? "WRITE" : "READ");
2862         if (s & ENDMA)
2863                 printk("ENDMA ");
2864         if (s & INTEN)
2865                 printk("INTEN ");
2866         if (s & RSTFIFO)
2867                 printk("RSTFIFO ");
2868         if (s & SWINT)
2869                 printk("SWINT ");
2870         printk("); ");
2871
2872         printk("DMASTAT( ");
2873         s = GETPORT(DMASTAT);
2874         if (s & ATDONE)
2875                 printk("ATDONE ");
2876         if (s & WORDRDY)
2877                 printk("WORDRDY ");
2878         if (s & DFIFOFULL)
2879                 printk("DFIFOFULL ");
2880         if (s & DFIFOEMP)
2881                 printk("DFIFOEMP ");
2882         printk(")\n");
2883 #endif
2884 }
2885
2886 /*
2887  * display enabled interrupts
2888  */
2889 static void disp_enintr(struct Scsi_Host *shpnt)
2890 {
2891         int s;
2892
2893         printk(KERN_DEBUG "enabled interrupts ( ");
2894
2895         s = GETPORT(SIMODE0);
2896         if (s & ENSELDO)
2897                 printk("ENSELDO ");
2898         if (s & ENSELDI)
2899                 printk("ENSELDI ");
2900         if (s & ENSELINGO)
2901                 printk("ENSELINGO ");
2902         if (s & ENSWRAP)
2903                 printk("ENSWRAP ");
2904         if (s & ENSDONE)
2905                 printk("ENSDONE ");
2906         if (s & ENSPIORDY)
2907                 printk("ENSPIORDY ");
2908         if (s & ENDMADONE)
2909                 printk("ENDMADONE ");
2910
2911         s = GETPORT(SIMODE1);
2912         if (s & ENSELTIMO)
2913                 printk("ENSELTIMO ");
2914         if (s & ENATNTARG)
2915                 printk("ENATNTARG ");
2916         if (s & ENPHASEMIS)
2917                 printk("ENPHASEMIS ");
2918         if (s & ENBUSFREE)
2919                 printk("ENBUSFREE ");
2920         if (s & ENSCSIPERR)
2921                 printk("ENSCSIPERR ");
2922         if (s & ENPHASECHG)
2923                 printk("ENPHASECHG ");
2924         if (s & ENREQINIT)
2925                 printk("ENREQINIT ");
2926         printk(")\n");
2927 }
2928
2929 /*
2930  * Show the command data of a command
2931  */
2932 static void show_command(Scsi_Cmnd *ptr)
2933 {
2934         scmd_printk(KERN_DEBUG, ptr, "%p: cmnd=(", ptr);
2935
2936         __scsi_print_command(ptr->cmnd);
2937
2938         printk(KERN_DEBUG "); request_bufflen=%d; resid=%d; phase |",
2939                ptr->request_bufflen, ptr->resid);
2940
2941         if (ptr->SCp.phase & not_issued)
2942                 printk("not issued|");
2943         if (ptr->SCp.phase & selecting)
2944                 printk("selecting|");
2945         if (ptr->SCp.phase & identified)
2946                 printk("identified|");
2947         if (ptr->SCp.phase & disconnected)
2948                 printk("disconnected|");
2949         if (ptr->SCp.phase & completed)
2950                 printk("completed|");
2951         if (ptr->SCp.phase & spiordy)
2952                 printk("spiordy|");
2953         if (ptr->SCp.phase & syncneg)
2954                 printk("syncneg|");
2955         if (ptr->SCp.phase & aborted)
2956                 printk("aborted|");
2957         if (ptr->SCp.phase & resetted)
2958                 printk("resetted|");
2959         if( SCDATA(ptr) ) {
2960                 printk("; next=0x%p\n", SCNEXT(ptr));
2961         } else {
2962                 printk("; next=(host scribble NULL)\n");
2963         }
2964 }
2965
2966 /*
2967  * Dump the queued data
2968  */
2969 static void show_queues(struct Scsi_Host *shpnt)
2970 {
2971         Scsi_Cmnd *ptr;
2972         unsigned long flags;
2973
2974         DO_LOCK(flags);
2975         printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n");
2976         for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
2977                 show_command(ptr);
2978         DO_UNLOCK(flags);
2979
2980         printk(KERN_DEBUG "current_SC:\n");
2981         if (CURRENT_SC)
2982                 show_command(CURRENT_SC);
2983         else
2984                 printk(KERN_DEBUG "none\n");
2985
2986         printk(KERN_DEBUG "disconnected_SC:\n");
2987         for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL)
2988                 show_command(ptr);
2989
2990         disp_ports(shpnt);
2991         disp_enintr(shpnt);
2992 }
2993
2994 #undef SPRINTF
2995 #define SPRINTF(args...) pos += sprintf(pos, ## args)
2996
2997 static int get_command(char *pos, Scsi_Cmnd * ptr)
2998 {
2999         char *start = pos;
3000         int i;
3001
3002         SPRINTF("0x%08x: target=%d; lun=%d; cmnd=( ",
3003                 (unsigned int) ptr, ptr->device->id, ptr->device->lun);
3004
3005         for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++)
3006                 SPRINTF("0x%02x ", ptr->cmnd[i]);
3007
3008         SPRINTF("); resid=%d; residual=%d; buffers=%d; phase |",
3009                 ptr->resid, ptr->SCp.this_residual, ptr->SCp.buffers_residual);
3010
3011         if (ptr->SCp.phase & not_issued)
3012                 SPRINTF("not issued|");
3013         if (ptr->SCp.phase & selecting)
3014                 SPRINTF("selecting|");
3015         if (ptr->SCp.phase & disconnected)
3016                 SPRINTF("disconnected|");
3017         if (ptr->SCp.phase & aborted)
3018                 SPRINTF("aborted|");
3019         if (ptr->SCp.phase & identified)
3020                 SPRINTF("identified|");
3021         if (ptr->SCp.phase & completed)
3022                 SPRINTF("completed|");
3023         if (ptr->SCp.phase & spiordy)
3024                 SPRINTF("spiordy|");
3025         if (ptr->SCp.phase & syncneg)
3026                 SPRINTF("syncneg|");
3027         SPRINTF("; next=0x%p\n", SCNEXT(ptr));
3028
3029         return (pos - start);
3030 }
3031
3032 static int get_ports(struct Scsi_Host *shpnt, char *pos)
3033 {
3034         char *start = pos;
3035         int s;
3036
3037         SPRINTF("\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name);
3038
3039         s = GETPORT(SCSISEQ);
3040         SPRINTF("SCSISEQ( ");
3041         if (s & TEMODEO)
3042                 SPRINTF("TARGET MODE ");
3043         if (s & ENSELO)
3044                 SPRINTF("SELO ");
3045         if (s & ENSELI)
3046                 SPRINTF("SELI ");
3047         if (s & ENRESELI)
3048                 SPRINTF("RESELI ");
3049         if (s & ENAUTOATNO)
3050                 SPRINTF("AUTOATNO ");
3051         if (s & ENAUTOATNI)
3052                 SPRINTF("AUTOATNI ");
3053         if (s & ENAUTOATNP)
3054                 SPRINTF("AUTOATNP ");
3055         if (s & SCSIRSTO)
3056                 SPRINTF("SCSIRSTO ");
3057         SPRINTF(");");
3058
3059         SPRINTF(" SCSISIG(");
3060         s = GETPORT(SCSISIG);
3061         switch (s & P_MASK) {
3062         case P_DATAO:
3063                 SPRINTF("DATA OUT");
3064                 break;
3065         case P_DATAI:
3066                 SPRINTF("DATA IN");
3067                 break;
3068         case P_CMD:
3069                 SPRINTF("COMMAND");
3070                 break;
3071         case P_STATUS:
3072                 SPRINTF("STATUS");
3073                 break;
3074         case P_MSGO:
3075                 SPRINTF("MESSAGE OUT");
3076                 break;
3077         case P_MSGI:
3078                 SPRINTF("MESSAGE IN");
3079                 break;
3080         default:
3081                 SPRINTF("*invalid*");
3082                 break;
3083         }
3084
3085         SPRINTF("); ");
3086
3087         SPRINTF("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");
3088
3089         SPRINTF("SSTAT( ");
3090         s = GETPORT(SSTAT0);
3091         if (s & TARGET)
3092                 SPRINTF("TARGET ");
3093         if (s & SELDO)
3094                 SPRINTF("SELDO ");
3095         if (s & SELDI)
3096                 SPRINTF("SELDI ");
3097         if (s & SELINGO)
3098                 SPRINTF("SELINGO ");
3099         if (s & SWRAP)
3100                 SPRINTF("SWRAP ");
3101         if (s & SDONE)
3102                 SPRINTF("SDONE ");
3103         if (s & SPIORDY)
3104                 SPRINTF("SPIORDY ");
3105         if (s & DMADONE)
3106                 SPRINTF("DMADONE ");
3107
3108         s = GETPORT(SSTAT1);
3109         if (s & SELTO)
3110                 SPRINTF("SELTO ");
3111         if (s & ATNTARG)
3112                 SPRINTF("ATNTARG ");
3113         if (s & SCSIRSTI)
3114                 SPRINTF("SCSIRSTI ");
3115         if (s & PHASEMIS)
3116                 SPRINTF("PHASEMIS ");
3117         if (s & BUSFREE)
3118                 SPRINTF("BUSFREE ");
3119         if (s & SCSIPERR)
3120                 SPRINTF("SCSIPERR ");
3121         if (s & PHASECHG)
3122                 SPRINTF("PHASECHG ");
3123         if (s & REQINIT)
3124                 SPRINTF("REQINIT ");
3125         SPRINTF("); ");
3126
3127
3128         SPRINTF("SSTAT( ");
3129
3130         s = GETPORT(SSTAT0) & GETPORT(SIMODE0);
3131
3132         if (s & TARGET)
3133                 SPRINTF("TARGET ");
3134         if (s & SELDO)
3135                 SPRINTF("SELDO ");
3136         if (s & SELDI)
3137                 SPRINTF("SELDI ");
3138         if (s & SELINGO)
3139                 SPRINTF("SELINGO ");
3140         if (s & SWRAP)
3141                 SPRINTF("SWRAP ");
3142         if (s & SDONE)
3143                 SPRINTF("SDONE ");
3144         if (s & SPIORDY)
3145                 SPRINTF("SPIORDY ");
3146         if (s & DMADONE)
3147                 SPRINTF("DMADONE ");
3148
3149         s = GETPORT(SSTAT1) & GETPORT(SIMODE1);
3150
3151         if (s & SELTO)
3152                 SPRINTF("SELTO ");
3153         if (s & ATNTARG)
3154                 SPRINTF("ATNTARG ");
3155         if (s & SCSIRSTI)
3156                 SPRINTF("SCSIRSTI ");
3157         if (s & PHASEMIS)
3158                 SPRINTF("PHASEMIS ");
3159         if (s & BUSFREE)
3160                 SPRINTF("BUSFREE ");
3161         if (s & SCSIPERR)
3162                 SPRINTF("SCSIPERR ");
3163         if (s & PHASECHG)
3164                 SPRINTF("PHASECHG ");
3165         if (s & REQINIT)
3166                 SPRINTF("REQINIT ");
3167         SPRINTF("); ");
3168
3169         SPRINTF("SXFRCTL0( ");
3170
3171         s = GETPORT(SXFRCTL0);
3172         if (s & SCSIEN)
3173                 SPRINTF("SCSIEN ");
3174         if (s & DMAEN)
3175                 SPRINTF("DMAEN ");
3176         if (s & CH1)
3177                 SPRINTF("CH1 ");
3178         if (s & CLRSTCNT)
3179                 SPRINTF("CLRSTCNT ");
3180         if (s & SPIOEN)
3181                 SPRINTF("SPIOEN ");
3182         if (s & CLRCH1)
3183                 SPRINTF("CLRCH1 ");
3184         SPRINTF("); ");
3185
3186         SPRINTF("SIGNAL( ");
3187
3188         s = GETPORT(SCSISIG);
3189         if (s & SIG_ATNI)
3190                 SPRINTF("ATNI ");
3191         if (s & SIG_SELI)
3192                 SPRINTF("SELI ");
3193         if (s & SIG_BSYI)
3194                 SPRINTF("BSYI ");
3195         if (s & SIG_REQI)
3196                 SPRINTF("REQI ");
3197         if (s & SIG_ACKI)
3198                 SPRINTF("ACKI ");
3199         SPRINTF("); ");
3200
3201         SPRINTF("SELID(%02x), ", GETPORT(SELID));
3202
3203         SPRINTF("STCNT(%d), ", GETSTCNT());
3204
3205         SPRINTF("SSTAT2( ");
3206
3207         s = GETPORT(SSTAT2);
3208         if (s & SOFFSET)
3209                 SPRINTF("SOFFSET ");
3210         if (s & SEMPTY)
3211                 SPRINTF("SEMPTY ");
3212         if (s & SFULL)
3213                 SPRINTF("SFULL ");
3214         SPRINTF("); SFCNT (%d); ", s & (SFULL | SFCNT));
3215
3216         s = GETPORT(SSTAT3);
3217         SPRINTF("SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);
3218
3219         SPRINTF("SSTAT4( ");
3220         s = GETPORT(SSTAT4);
3221         if (s & SYNCERR)
3222                 SPRINTF("SYNCERR ");
3223         if (s & FWERR)
3224                 SPRINTF("FWERR ");
3225         if (s & FRERR)
3226                 SPRINTF("FRERR ");
3227         SPRINTF("); ");
3228
3229         SPRINTF("DMACNTRL0( ");
3230         s = GETPORT(DMACNTRL0);
3231         SPRINTF("%s ", s & _8BIT ? "8BIT" : "16BIT");
3232         SPRINTF("%s ", s & DMA ? "DMA" : "PIO");
3233         SPRINTF("%s ", s & WRITE_READ ? "WRITE" : "READ");
3234         if (s & ENDMA)
3235                 SPRINTF("ENDMA ");
3236         if (s & INTEN)
3237                 SPRINTF("INTEN ");
3238         if (s & RSTFIFO)
3239                 SPRINTF("RSTFIFO ");
3240         if (s & SWINT)
3241                 SPRINTF("SWINT ");
3242         SPRINTF("); ");
3243
3244         SPRINTF("DMASTAT( ");
3245         s = GETPORT(DMASTAT);
3246         if (s & ATDONE)
3247                 SPRINTF("ATDONE ");
3248         if (s & WORDRDY)
3249                 SPRINTF("WORDRDY ");
3250         if (s & DFIFOFULL)
3251                 SPRINTF("DFIFOFULL ");
3252         if (s & DFIFOEMP)
3253                 SPRINTF("DFIFOEMP ");
3254         SPRINTF(")\n");
3255
3256         SPRINTF("enabled interrupts( ");
3257
3258         s = GETPORT(SIMODE0);
3259         if (s & ENSELDO)
3260                 SPRINTF("ENSELDO ");
3261         if (s & ENSELDI)
3262                 SPRINTF("ENSELDI ");
3263         if (s & ENSELINGO)
3264                 SPRINTF("ENSELINGO ");
3265         if (s & ENSWRAP)
3266                 SPRINTF("ENSWRAP ");
3267         if (s & ENSDONE)
3268                 SPRINTF("ENSDONE ");
3269         if (s & ENSPIORDY)
3270                 SPRINTF("ENSPIORDY ");
3271         if (s & ENDMADONE)
3272                 SPRINTF("ENDMADONE ");
3273
3274         s = GETPORT(SIMODE1);
3275         if (s & ENSELTIMO)
3276                 SPRINTF("ENSELTIMO ");
3277         if (s & ENATNTARG)
3278                 SPRINTF("ENATNTARG ");
3279         if (s & ENPHASEMIS)
3280                 SPRINTF("ENPHASEMIS ");
3281         if (s & ENBUSFREE)
3282                 SPRINTF("ENBUSFREE ");
3283         if (s & ENSCSIPERR)
3284                 SPRINTF("ENSCSIPERR ");
3285         if (s & ENPHASECHG)
3286                 SPRINTF("ENPHASECHG ");
3287         if (s & ENREQINIT)
3288                 SPRINTF("ENREQINIT ");
3289         SPRINTF(")\n");
3290
3291         return (pos - start);
3292 }
3293
3294 static int aha152x_set_info(char *buffer, int length, struct Scsi_Host *shpnt)
3295 {
3296         if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0)
3297                 return -EINVAL;
3298
3299 #if defined(AHA152X_DEBUG)
3300         if(length>14 && strncmp("debug ", buffer+8, 6)==0) {
3301                 int debug = HOSTDATA(shpnt)->debug;
3302
3303                 HOSTDATA(shpnt)->debug = simple_strtoul(buffer+14, NULL, 0);
3304
3305                 printk(KERN_INFO "aha152x%d: debugging options set to 0x%04x (were 0x%04x)\n", HOSTNO, HOSTDATA(shpnt)->debug, debug);
3306         } else
3307 #endif
3308 #if defined(AHA152X_STAT)
3309         if(length>13 && strncmp("reset", buffer+8, 5)==0) {
3310                 int i;
3311
3312                 HOSTDATA(shpnt)->total_commands=0;
3313                 HOSTDATA(shpnt)->disconnections=0;
3314                 HOSTDATA(shpnt)->busfree_without_any_action=0;
3315                 HOSTDATA(shpnt)->busfree_without_old_command=0;
3316                 HOSTDATA(shpnt)->busfree_without_new_command=0;
3317                 HOSTDATA(shpnt)->busfree_without_done_command=0;
3318                 HOSTDATA(shpnt)->busfree_with_check_condition=0;
3319                 for (i = idle; i<maxstate; i++) {
3320                         HOSTDATA(shpnt)->count[i]=0;
3321                         HOSTDATA(shpnt)->count_trans[i]=0;
3322                         HOSTDATA(shpnt)->time[i]=0;
3323                 }
3324
3325                 printk(KERN_INFO "aha152x%d: stats reseted.\n", HOSTNO);
3326
3327         } else
3328 #endif
3329         {
3330                 return -EINVAL;
3331         }
3332
3333
3334         return length;
3335 }
3336
3337 #undef SPRINTF
3338 #define SPRINTF(args...) \
3339         do { if(pos < buffer + length) pos += sprintf(pos, ## args); } while(0)
3340
3341 static int aha152x_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start,
3342                       off_t offset, int length, int inout)
3343 {
3344         int i;
3345         char *pos = buffer;
3346         Scsi_Cmnd *ptr;
3347         unsigned long flags;
3348         int thislength;
3349
3350         DPRINTK(debug_procinfo,
3351                KERN_DEBUG "aha152x_proc_info: buffer=%p offset=%ld length=%d hostno=%d inout=%d\n",
3352                buffer, offset, length, shpnt->host_no, inout);
3353
3354
3355         if (inout)
3356                 return aha152x_set_info(buffer, length, shpnt);
3357
3358         SPRINTF(AHA152X_REVID "\n");
3359
3360         SPRINTF("ioports 0x%04lx to 0x%04lx\n",
3361                 shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1);
3362         SPRINTF("interrupt 0x%02x\n", shpnt->irq);
3363         SPRINTF("disconnection/reconnection %s\n",
3364                 RECONNECT ? "enabled" : "disabled");
3365         SPRINTF("parity checking %s\n",
3366                 PARITY ? "enabled" : "disabled");
3367         SPRINTF("synchronous transfers %s\n",
3368                 SYNCHRONOUS ? "enabled" : "disabled");
3369         SPRINTF("%d commands currently queued\n", HOSTDATA(shpnt)->commands);
3370
3371         if(SYNCHRONOUS) {
3372                 SPRINTF("synchronously operating targets (tick=50 ns):\n");
3373                 for (i = 0; i < 8; i++)
3374                         if (HOSTDATA(shpnt)->syncrate[i] & 0x7f)
3375                                 SPRINTF("target %d: period %dT/%dns; req/ack offset %d\n",
3376                                         i,
3377                                         (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2),
3378                                         (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50,
3379                                     HOSTDATA(shpnt)->syncrate[i] & 0x0f);
3380         }
3381 #if defined(AHA152X_DEBUG)
3382 #define PDEBUG(flags,txt) \
3383         if(HOSTDATA(shpnt)->debug & flags) SPRINTF("(%s) ", txt);
3384
3385         SPRINTF("enabled debugging options: ");
3386
3387         PDEBUG(debug_procinfo, "procinfo");
3388         PDEBUG(debug_queue, "queue");
3389         PDEBUG(debug_intr, "interrupt");
3390         PDEBUG(debug_selection, "selection");
3391         PDEBUG(debug_msgo, "message out");
3392         PDEBUG(debug_msgi, "message in");
3393         PDEBUG(debug_status, "status");
3394         PDEBUG(debug_cmd, "command");
3395         PDEBUG(debug_datai, "data in");
3396         PDEBUG(debug_datao, "data out");
3397         PDEBUG(debug_eh, "eh");
3398         PDEBUG(debug_locks, "locks");
3399         PDEBUG(debug_phases, "phases");
3400
3401         SPRINTF("\n");
3402 #endif
3403
3404         SPRINTF("\nqueue status:\n");
3405         DO_LOCK(flags);
3406         if (ISSUE_SC) {
3407                 SPRINTF("not yet issued commands:\n");
3408                 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
3409                         pos += get_command(pos, ptr);
3410         } else
3411                 SPRINTF("no not yet issued commands\n");
3412         DO_UNLOCK(flags);
3413
3414         if (CURRENT_SC) {
3415                 SPRINTF("current command:\n");
3416                 pos += get_command(pos, CURRENT_SC);
3417         } else
3418                 SPRINTF("no current command\n");
3419
3420         if (DISCONNECTED_SC) {
3421                 SPRINTF("disconnected commands:\n");
3422                 for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr))
3423                         pos += get_command(pos, ptr);
3424         } else
3425                 SPRINTF("no disconnected commands\n");
3426
3427         pos += get_ports(shpnt, pos);
3428
3429 #if defined(AHA152X_STAT)
3430         SPRINTF("statistics:\n"
3431                 "total commands:               %d\n"
3432                 "disconnections:               %d\n"
3433                 "busfree with check condition: %d\n"
3434                 "busfree without old command:  %d\n"
3435                 "busfree without new command:  %d\n"
3436                 "busfree without done command: %d\n"
3437                 "busfree without any action:   %d\n"
3438                 "state      "
3439                 "transitions  "
3440                 "count        "
3441                 "time\n",
3442                 HOSTDATA(shpnt)->total_commands,
3443                 HOSTDATA(shpnt)->disconnections,
3444                 HOSTDATA(shpnt)->busfree_with_check_condition,
3445                 HOSTDATA(shpnt)->busfree_without_old_command,
3446                 HOSTDATA(shpnt)->busfree_without_new_command,
3447                 HOSTDATA(shpnt)->busfree_without_done_command,
3448                 HOSTDATA(shpnt)->busfree_without_any_action);
3449         for(i=0; i<maxstate; i++) {
3450                 SPRINTF("%-10s %-12d %-12d %-12ld\n",
3451                         states[i].name,
3452                         HOSTDATA(shpnt)->count_trans[i],
3453                         HOSTDATA(shpnt)->count[i],
3454                         HOSTDATA(shpnt)->time[i]);
3455         }
3456 #endif
3457
3458         DPRINTK(debug_procinfo, KERN_DEBUG "aha152x_proc_info: pos=%p\n", pos);
3459
3460         thislength = pos - (buffer + offset);
3461         DPRINTK(debug_procinfo, KERN_DEBUG "aha152x_proc_info: length=%d thislength=%d\n", length, thislength);
3462
3463         if(thislength<0) {
3464                 DPRINTK(debug_procinfo, KERN_DEBUG "aha152x_proc_info: output too short\n");
3465                 *start = NULL;
3466                 return 0;
3467         }
3468
3469         thislength = thislength<length ? thislength : length;
3470
3471         DPRINTK(debug_procinfo, KERN_DEBUG "aha152x_proc_info: return %d\n", thislength);
3472
3473         *start = buffer + offset;
3474         return thislength < length ? thislength : length;
3475 }
3476
3477 static struct scsi_host_template aha152x_driver_template = {
3478         .module                         = THIS_MODULE,
3479         .name                           = AHA152X_REVID,
3480         .proc_name                      = "aha152x",
3481         .proc_info                      = aha152x_proc_info,
3482         .queuecommand                   = aha152x_queue,
3483         .eh_abort_handler               = aha152x_abort,
3484         .eh_device_reset_handler        = aha152x_device_reset,
3485         .eh_bus_reset_handler           = aha152x_bus_reset,
3486         .eh_host_reset_handler          = aha152x_host_reset,
3487         .bios_param                     = aha152x_biosparam,
3488         .can_queue                      = 1,
3489         .this_id                        = 7,
3490         .sg_tablesize                   = SG_ALL,
3491         .cmd_per_lun                    = 1,
3492         .use_clustering                 = DISABLE_CLUSTERING,
3493 };
3494
3495 #if !defined(PCMCIA)
3496 static int setup_count;
3497 static struct aha152x_setup setup[2];
3498
3499 /* possible i/o addresses for the AIC-6260; default first */
3500 static unsigned short ports[] = { 0x340, 0x140 };
3501
3502 #if !defined(SKIP_BIOSTEST)
3503 /* possible locations for the Adaptec BIOS; defaults first */
3504 static unsigned int addresses[] =
3505 {
3506         0xdc000,                /* default first */
3507         0xc8000,
3508         0xcc000,
3509         0xd0000,
3510         0xd4000,
3511         0xd8000,
3512         0xe0000,
3513         0xeb800,                /* VTech Platinum SMP */
3514         0xf0000,
3515 };
3516
3517 /* signatures for various AIC-6[23]60 based controllers.
3518    The point in detecting signatures is to avoid useless and maybe
3519    harmful probes on ports. I'm not sure that all listed boards pass
3520    auto-configuration. For those which fail the BIOS signature is
3521    obsolete, because user intervention to supply the configuration is
3522    needed anyway.  May be an information whether or not the BIOS supports
3523    extended translation could be also useful here. */
3524 static struct signature {
3525         unsigned char *signature;
3526         int sig_offset;
3527         int sig_length;
3528 } signatures[] =
3529 {
3530         { "Adaptec AHA-1520 BIOS",      0x102e, 21 },
3531                 /* Adaptec 152x */
3532         { "Adaptec AHA-1520B",          0x000b, 17 },
3533                 /* Adaptec 152x rev B */
3534         { "Adaptec AHA-1520B",          0x0026, 17 },
3535                 /* Iomega Jaz Jet ISA (AIC6370Q) */
3536         { "Adaptec ASW-B626 BIOS",      0x1029, 21 },
3537                 /* on-board controller */
3538         { "Adaptec BIOS: ASW-B626",     0x000f, 22 },
3539                 /* on-board controller */
3540         { "Adaptec ASW-B626 S2",        0x2e6c, 19 },
3541                 /* on-board controller */
3542         { "Adaptec BIOS:AIC-6360",      0x000c, 21 },
3543                 /* on-board controller */
3544         { "ScsiPro SP-360 BIOS",        0x2873, 19 },
3545                 /* ScsiPro-Controller  */
3546         { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 },
3547                 /* Gigabyte Local-Bus-SCSI */
3548         { "Adaptec BIOS:AVA-282X",      0x000c, 21 },
3549                 /* Adaptec 282x */
3550         { "Adaptec IBM Dock II SCSI",   0x2edd, 24 },
3551                 /* IBM Thinkpad Dock II */
3552         { "Adaptec BIOS:AHA-1532P",     0x001c, 22 },
3553                 /* IBM Thinkpad Dock II SCSI */
3554         { "DTC3520A Host Adapter BIOS", 0x318a, 26 },
3555                 /* DTC 3520A ISA SCSI */
3556 };
3557 #endif /* !SKIP_BIOSTEST */
3558
3559 /*
3560  * Test, if port_base is valid.
3561  *
3562  */
3563 static int aha152x_porttest(int io_port)
3564 {
3565         int i;
3566
3567         SETPORT(io_port + O_DMACNTRL1, 0);      /* reset stack pointer */
3568         for (i = 0; i < 16; i++)
3569                 SETPORT(io_port + O_STACK, i);
3570
3571         SETPORT(io_port + O_DMACNTRL1, 0);      /* reset stack pointer */
3572         for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++)
3573                 ;
3574
3575         return (i == 16);
3576 }
3577
3578 static int tc1550_porttest(int io_port)
3579 {
3580         int i;
3581
3582         SETPORT(io_port + O_TC_DMACNTRL1, 0);   /* reset stack pointer */
3583         for (i = 0; i < 16; i++)
3584                 SETPORT(io_port + O_STACK, i);
3585
3586         SETPORT(io_port + O_TC_DMACNTRL1, 0);   /* reset stack pointer */
3587         for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++)
3588                 ;
3589
3590         return (i == 16);
3591 }
3592
3593
3594 static int checksetup(struct aha152x_setup *setup)
3595 {
3596         int i;
3597         for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++)
3598                 ;
3599
3600         if (i == ARRAY_SIZE(ports))
3601                 return 0;
3602
3603         if ( request_region(setup->io_port, IO_RANGE, "aha152x")==0 ) {
3604                 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port);
3605                 return 0;
3606         }
3607
3608         if( aha152x_porttest(setup->io_port) ) {
3609                 setup->tc1550=0;
3610         } else if( tc1550_porttest(setup->io_port) ) {
3611                 setup->tc1550=1;
3612         } else {
3613                 release_region(setup->io_port, IO_RANGE);
3614                 return 0;
3615         }
3616
3617         release_region(setup->io_port, IO_RANGE);
3618
3619         if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX))
3620                 return 0;
3621
3622         if ((setup->scsiid < 0) || (setup->scsiid > 7))
3623                 return 0;
3624
3625         if ((setup->reconnect < 0) || (setup->reconnect > 1))
3626                 return 0;
3627
3628         if ((setup->parity < 0) || (setup->parity > 1))
3629                 return 0;
3630
3631         if ((setup->synchronous < 0) || (setup->synchronous > 1))
3632                 return 0;
3633
3634         if ((setup->ext_trans < 0) || (setup->ext_trans > 1))
3635                 return 0;
3636
3637
3638         return 1;
3639 }
3640
3641
3642 static int __init aha152x_init(void)
3643 {
3644         int i, j, ok;
3645 #if defined(AUTOCONF)
3646         aha152x_config conf;
3647 #endif
3648 #ifdef __ISAPNP__
3649         struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL};
3650 #endif
3651
3652         if ( setup_count ) {
3653                 printk(KERN_INFO "aha152x: processing commandline: ");
3654
3655                 for (i = 0; i<setup_count; i++) {
3656                         if (!checksetup(&setup[i])) {
3657                                 printk(KERN_ERR "\naha152x: %s\n", setup[i].conf);
3658                                 printk(KERN_ERR "aha152x: invalid line\n");
3659                         }
3660                 }
3661                 printk("ok\n");
3662         }
3663
3664 #if defined(SETUP0)
3665         if (setup_count < ARRAY_SIZE(setup)) {
3666                 struct aha152x_setup override = SETUP0;
3667
3668                 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3669                         if (!checksetup(&override)) {
3670                                 printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3671                                        override.io_port,
3672                                        override.irq,
3673                                        override.scsiid,
3674                                        override.reconnect,
3675                                        override.parity,
3676                                        override.synchronous,
3677                                        override.delay,
3678                                        override.ext_trans);
3679                         } else
3680                                 setup[setup_count++] = override;
3681                 }
3682         }
3683 #endif
3684
3685 #if defined(SETUP1)
3686         if (setup_count < ARRAY_SIZE(setup)) {
3687                 struct aha152x_setup override = SETUP1;
3688
3689                 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3690                         if (!checksetup(&override)) {
3691                                 printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3692                                        override.io_port,
3693                                        override.irq,
3694                                        override.scsiid,
3695                                        override.reconnect,
3696                                        override.parity,
3697                                        override.synchronous,
3698                                        override.delay,
3699                                        override.ext_trans);
3700                         } else
3701                                 setup[setup_count++] = override;
3702                 }
3703         }
3704 #endif
3705
3706 #if defined(MODULE)
3707         if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) {
3708                 if(aha152x[0]!=0) {
3709                         setup[setup_count].conf        = "";
3710                         setup[setup_count].io_port     = aha152x[0];
3711                         setup[setup_count].irq         = aha152x[1];
3712                         setup[setup_count].scsiid      = aha152x[2];
3713                         setup[setup_count].reconnect   = aha152x[3];
3714                         setup[setup_count].parity      = aha152x[4];
3715                         setup[setup_count].synchronous = aha152x[5];
3716                         setup[setup_count].delay       = aha152x[6];
3717                         setup[setup_count].ext_trans   = aha152x[7];
3718 #if defined(AHA152X_DEBUG)
3719                         setup[setup_count].debug       = aha152x[8];
3720 #endif
3721                 } else if(io[0]!=0 || irq[0]!=0) {
3722                         if(io[0]!=0)  setup[setup_count].io_port = io[0];
3723                         if(irq[0]!=0) setup[setup_count].irq     = irq[0];
3724
3725                         setup[setup_count].scsiid      = scsiid[0];
3726                         setup[setup_count].reconnect   = reconnect[0];
3727                         setup[setup_count].parity      = parity[0];
3728                         setup[setup_count].synchronous = sync[0];
3729                         setup[setup_count].delay       = delay[0];
3730                         setup[setup_count].ext_trans   = exttrans[0];
3731 #if defined(AHA152X_DEBUG)
3732                         setup[setup_count].debug       = debug[0];
3733 #endif
3734                 }
3735
3736                 if (checksetup(&setup[setup_count]))
3737                         setup_count++;
3738                 else
3739                         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",
3740                                setup[setup_count].io_port,
3741                                setup[setup_count].irq,
3742                                setup[setup_count].scsiid,
3743                                setup[setup_count].reconnect,
3744                                setup[setup_count].parity,
3745                                setup[setup_count].synchronous,
3746                                setup[setup_count].delay,
3747                                setup[setup_count].ext_trans);
3748         }
3749
3750         if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) {
3751                 if(aha152x1[0]!=0) {
3752                         setup[setup_count].conf        = "";
3753                         setup[setup_count].io_port     = aha152x1[0];
3754                         setup[setup_count].irq         = aha152x1[1];
3755                         setup[setup_count].scsiid      = aha152x1[2];
3756                         setup[setup_count].reconnect   = aha152x1[3];
3757                         setup[setup_count].parity      = aha152x1[4];
3758                         setup[setup_count].synchronous = aha152x1[5];
3759                         setup[setup_count].delay       = aha152x1[6];
3760                         setup[setup_count].ext_trans   = aha152x1[7];
3761 #if defined(AHA152X_DEBUG)
3762                         setup[setup_count].debug       = aha152x1[8];
3763 #endif
3764                 } else if(io[1]!=0 || irq[1]!=0) {
3765                         if(io[1]!=0)  setup[setup_count].io_port = io[1];
3766                         if(irq[1]!=0) setup[setup_count].irq     = irq[1];
3767
3768                         setup[setup_count].scsiid      = scsiid[1];
3769                         setup[setup_count].reconnect   = reconnect[1];
3770                         setup[setup_count].parity      = parity[1];
3771                         setup[setup_count].synchronous = sync[1];
3772                         setup[setup_count].delay       = delay[1];
3773                         setup[setup_count].ext_trans   = exttrans[1];
3774 #if defined(AHA152X_DEBUG)
3775                         setup[setup_count].debug       = debug[1];
3776 #endif
3777                 }
3778                 if (checksetup(&setup[setup_count]))
3779                         setup_count++;
3780                 else
3781                         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",
3782                                setup[setup_count].io_port,
3783                                setup[setup_count].irq,
3784                                setup[setup_count].scsiid,
3785                                setup[setup_count].reconnect,
3786                                setup[setup_count].parity,
3787                                setup[setup_count].synchronous,
3788                                setup[setup_count].delay,
3789                                setup[setup_count].ext_trans);
3790         }
3791 #endif
3792
3793 #ifdef __ISAPNP__
3794         for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) {
3795                 while ( setup_count<ARRAY_SIZE(setup) &&
3796                         (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) {
3797                         if (pnp_device_attach(dev) < 0)
3798                                 continue;
3799
3800                         if (pnp_activate_dev(dev) < 0) {
3801                                 pnp_device_detach(dev);
3802                                 continue;
3803                         }
3804
3805                         if (!pnp_port_valid(dev, 0)) {
3806                                 pnp_device_detach(dev);
3807                                 continue;
3808                         }
3809
3810                         if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) {
3811                                 pnp_device_detach(dev);
3812                                 continue;
3813                         }
3814
3815                         setup[setup_count].io_port     = pnp_port_start(dev, 0);
3816                         setup[setup_count].irq         = pnp_irq(dev, 0);
3817                         setup[setup_count].scsiid      = 7;
3818                         setup[setup_count].reconnect   = 1;
3819                         setup[setup_count].parity      = 1;
3820                         setup[setup_count].synchronous = 1;
3821                         setup[setup_count].delay       = DELAY_DEFAULT;
3822                         setup[setup_count].ext_trans   = 0;
3823 #if defined(AHA152X_DEBUG)
3824                         setup[setup_count].debug       = DEBUG_DEFAULT;
3825 #endif
3826 #if defined(__ISAPNP__)
3827                         pnpdev[setup_count]            = dev;
3828 #endif
3829                         printk (KERN_INFO
3830                                 "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n",
3831                                 setup[setup_count].io_port, setup[setup_count].irq);
3832                         setup_count++;
3833                 }
3834         }
3835 #endif
3836
3837 #if defined(AUTOCONF)
3838         if (setup_count<ARRAY_SIZE(setup)) {
3839 #if !defined(SKIP_BIOSTEST)
3840                 ok = 0;
3841                 for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) {
3842                         void __iomem *p = ioremap(addresses[i], 0x4000);
3843                         if (!p)
3844                                 continue;
3845                         for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++)
3846                                 ok = check_signature(p + signatures[j].sig_offset,
3847                                                                 signatures[j].signature, signatures[j].sig_length);
3848                         iounmap(p);
3849                 }
3850                 if (!ok && setup_count == 0)
3851                         return 0;
3852
3853                 printk(KERN_INFO "aha152x: BIOS test: passed, ");
3854 #else
3855                 printk(KERN_INFO "aha152x: ");
3856 #endif                          /* !SKIP_BIOSTEST */
3857
3858                 ok = 0;
3859                 for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) {
3860                         if ((setup_count == 1) && (setup[0].io_port == ports[i]))
3861                                 continue;
3862
3863                         if ( request_region(ports[i], IO_RANGE, "aha152x")==0 ) {
3864                                 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]);
3865                                 continue;
3866                         }
3867
3868                         if (aha152x_porttest(ports[i])) {
3869                                 setup[setup_count].tc1550  = 0;
3870
3871                                 conf.cf_port =
3872                                     (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB);
3873                         } else if (tc1550_porttest(ports[i])) {
3874                                 setup[setup_count].tc1550  = 1;
3875
3876                                 conf.cf_port =
3877                                     (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB);
3878                         } else {
3879                                 release_region(ports[i], IO_RANGE);
3880                                 continue;
3881                         }
3882
3883                         release_region(ports[i], IO_RANGE);
3884
3885                         ok++;
3886                         setup[setup_count].io_port = ports[i];
3887                         setup[setup_count].irq = IRQ_MIN + conf.cf_irq;
3888                         setup[setup_count].scsiid = conf.cf_id;
3889                         setup[setup_count].reconnect = conf.cf_tardisc;
3890                         setup[setup_count].parity = !conf.cf_parity;
3891                         setup[setup_count].synchronous = conf.cf_syncneg;
3892                         setup[setup_count].delay = DELAY_DEFAULT;
3893                         setup[setup_count].ext_trans = 0;
3894 #if defined(AHA152X_DEBUG)
3895                         setup[setup_count].debug = DEBUG_DEFAULT;
3896 #endif
3897                         setup_count++;
3898
3899                 }
3900
3901                 if (ok)
3902                         printk("auto configuration: ok, ");
3903         }
3904 #endif
3905
3906         printk("%d controller(s) configured\n", setup_count);
3907
3908         for (i=0; i<setup_count; i++) {
3909                 if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) {
3910                         struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]);
3911
3912                         if( !shpnt ) {
3913                                 release_region(setup[i].io_port, IO_RANGE);
3914 #if defined(__ISAPNP__)
3915                         } else if( pnpdev[i] ) {
3916                                 HOSTDATA(shpnt)->pnpdev=pnpdev[i];
3917                                 pnpdev[i]=NULL;
3918 #endif
3919                         }
3920                 } else {
3921                         printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port);
3922                 }
3923
3924 #if defined(__ISAPNP__)
3925                 if( pnpdev[i] )
3926                         pnp_device_detach(pnpdev[i]);
3927 #endif
3928         }
3929
3930         return 1;
3931 }
3932
3933 static void __exit aha152x_exit(void)
3934 {
3935         struct aha152x_hostdata *hd;
3936
3937         list_for_each_entry(hd, &aha152x_host_list, host_list) {
3938                 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
3939
3940                 aha152x_release(shost);
3941         }
3942 }
3943
3944 module_init(aha152x_init);
3945 module_exit(aha152x_exit);
3946
3947 #if !defined(MODULE)
3948 static int __init aha152x_setup(char *str)
3949 {
3950 #if defined(AHA152X_DEBUG)
3951         int ints[11];
3952 #else
3953         int ints[10];
3954 #endif
3955         get_options(str, ARRAY_SIZE(ints), ints);
3956
3957         if(setup_count>=ARRAY_SIZE(setup)) {
3958                 printk(KERN_ERR "aha152x: you can only configure up to two controllers\n");
3959                 return 1;
3960         }
3961
3962         setup[setup_count].conf        = str;
3963         setup[setup_count].io_port     = ints[0] >= 1 ? ints[1] : 0x340;
3964         setup[setup_count].irq         = ints[0] >= 2 ? ints[2] : 11;
3965         setup[setup_count].scsiid      = ints[0] >= 3 ? ints[3] : 7;
3966         setup[setup_count].reconnect   = ints[0] >= 4 ? ints[4] : 1;
3967         setup[setup_count].parity      = ints[0] >= 5 ? ints[5] : 1;
3968         setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1;
3969         setup[setup_count].delay       = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT;
3970         setup[setup_count].ext_trans   = ints[0] >= 8 ? ints[8] : 0;
3971 #if defined(AHA152X_DEBUG)
3972         setup[setup_count].debug       = ints[0] >= 9 ? ints[9] : DEBUG_DEFAULT;
3973         if (ints[0] > 9) {
3974                 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
3975                        "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>[,<DEBUG>]]]]]]]]\n");
3976 #else
3977         if (ints[0] > 8) {                                                /*}*/
3978                 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
3979                        "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n");
3980 #endif
3981         } else {
3982                 setup_count++;
3983                 return 0;
3984         }
3985
3986         return 1;
3987 }
3988 __setup("aha152x=", aha152x_setup);
3989 #endif
3990
3991 #endif /* !PCMCIA */