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netfilter: nf_conntrack_tcp: fix endless loop
[linux-2.6/mini2440.git] / drivers / scsi / aha152x.c
blob0899cb61e3ddc08dd9db34a541decdb00f76a242
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 <scsi/scsi_eh.h>
264 #include "aha152x.h"
265
266 static LIST_HEAD(aha152x_host_list);
267
268
269 /* DEFINES */
270
271 /* For PCMCIA cards, always use AUTOCONF */
272 #if defined(PCMCIA) || defined(MODULE)
273 #if !defined(AUTOCONF)
274 #define AUTOCONF
275 #endif
276 #endif
277
278 #if !defined(AUTOCONF) && !defined(SETUP0)
279 #error define AUTOCONF or SETUP0
280 #endif
281
282 #if defined(AHA152X_DEBUG)
283 #define DEBUG_DEFAULT debug_eh
284
285 #define DPRINTK(when,msgs...) \
286 do { if(HOSTDATA(shpnt)->debug & (when)) printk(msgs); } while(0)
287
288 #define DO_LOCK(flags) \
289 do { \
290 if(spin_is_locked(&QLOCK)) { \
291 DPRINTK(debug_intr, DEBUG_LEAD "(%s:%d) already locked at %s:%d\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__, QLOCKER, QLOCKERL); \
292 } \
293 DPRINTK(debug_locking, DEBUG_LEAD "(%s:%d) locking\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__); \
294 spin_lock_irqsave(&QLOCK,flags); \
295 DPRINTK(debug_locking, DEBUG_LEAD "(%s:%d) locked\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__); \
296 QLOCKER=__FUNCTION__; \
297 QLOCKERL=__LINE__; \
298 } while(0)
299
300 #define DO_UNLOCK(flags) \
301 do { \
302 DPRINTK(debug_locking, DEBUG_LEAD "(%s:%d) unlocking (locked at %s:%d)\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__, QLOCKER, QLOCKERL); \
303 spin_unlock_irqrestore(&QLOCK,flags); \
304 DPRINTK(debug_locking, DEBUG_LEAD "(%s:%d) unlocked\n", CMDINFO(CURRENT_SC), __FUNCTION__, __LINE__); \
305 QLOCKER="(not locked)"; \
306 QLOCKERL=0; \
307 } while(0)
308
309 #else
310 #define DPRINTK(when,msgs...)
311 #define DO_LOCK(flags) spin_lock_irqsave(&QLOCK,flags)
312 #define DO_UNLOCK(flags) spin_unlock_irqrestore(&QLOCK,flags)
313 #endif
314
315 #define LEAD "(scsi%d:%d:%d) "
316 #define WARN_LEAD KERN_WARNING LEAD
317 #define INFO_LEAD KERN_INFO LEAD
318 #define NOTE_LEAD KERN_NOTICE LEAD
319 #define ERR_LEAD KERN_ERR LEAD
320 #define DEBUG_LEAD KERN_DEBUG LEAD
321 #define CMDINFO(cmd) \
322 (cmd) ? ((cmd)->device->host->host_no) : -1, \
323 (cmd) ? ((cmd)->device->id & 0x0f) : -1, \
324 (cmd) ? ((cmd)->device->lun & 0x07) : -1
325
326 static inline void
327 CMD_INC_RESID(struct scsi_cmnd *cmd, int inc)
328 {
329 scsi_set_resid(cmd, scsi_get_resid(cmd) + inc);
330 }
331
332 #define DELAY_DEFAULT 1000
333
334 #if defined(PCMCIA)
335 #define IRQ_MIN 0
336 #define IRQ_MAX 16
337 #else
338 #define IRQ_MIN 9
339 #if defined(__PPC)
340 #define IRQ_MAX (NR_IRQS-1)
341 #else
342 #define IRQ_MAX 12
343 #endif
344 #endif
345
346 enum {
347 not_issued = 0x0001, /* command not yet issued */
348 selecting = 0x0002, /* target is beeing selected */
349 identified = 0x0004, /* IDENTIFY was sent */
350 disconnected = 0x0008, /* target disconnected */
351 completed = 0x0010, /* target sent COMMAND COMPLETE */
352 aborted = 0x0020, /* ABORT was sent */
353 resetted = 0x0040, /* BUS DEVICE RESET was sent */
354 spiordy = 0x0080, /* waiting for SPIORDY to raise */
355 syncneg = 0x0100, /* synchronous negotiation in progress */
356 aborting = 0x0200, /* ABORT is pending */
357 resetting = 0x0400, /* BUS DEVICE RESET is pending */
358 check_condition = 0x0800, /* requesting sense after CHECK CONDITION */
359 };
360
361 MODULE_AUTHOR("Jürgen Fischer");
362 MODULE_DESCRIPTION(AHA152X_REVID);
363 MODULE_LICENSE("GPL");
364
365 #if !defined(PCMCIA)
366 #if defined(MODULE)
367 static int io[] = {0, 0};
368 module_param_array(io, int, NULL, 0);
369 MODULE_PARM_DESC(io,"base io address of controller");
370
371 static int irq[] = {0, 0};
372 module_param_array(irq, int, NULL, 0);
373 MODULE_PARM_DESC(irq,"interrupt for controller");
374
375 static int scsiid[] = {7, 7};
376 module_param_array(scsiid, int, NULL, 0);
377 MODULE_PARM_DESC(scsiid,"scsi id of controller");
378
379 static int reconnect[] = {1, 1};
380 module_param_array(reconnect, int, NULL, 0);
381 MODULE_PARM_DESC(reconnect,"allow targets to disconnect");
382
383 static int parity[] = {1, 1};
384 module_param_array(parity, int, NULL, 0);
385 MODULE_PARM_DESC(parity,"use scsi parity");
386
387 static int sync[] = {1, 1};
388 module_param_array(sync, int, NULL, 0);
389 MODULE_PARM_DESC(sync,"use synchronous transfers");
390
391 static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT};
392 module_param_array(delay, int, NULL, 0);
393 MODULE_PARM_DESC(delay,"scsi reset delay");
394
395 static int exttrans[] = {0, 0};
396 module_param_array(exttrans, int, NULL, 0);
397 MODULE_PARM_DESC(exttrans,"use extended translation");
398
399 #if !defined(AHA152X_DEBUG)
400 static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
401 module_param_array(aha152x, int, NULL, 0);
402 MODULE_PARM_DESC(aha152x, "parameters for first controller");
403
404 static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
405 module_param_array(aha152x1, int, NULL, 0);
406 MODULE_PARM_DESC(aha152x1, "parameters for second controller");
407 #else
408 static int debug[] = {DEBUG_DEFAULT, DEBUG_DEFAULT};
409 module_param_array(debug, int, NULL, 0);
410 MODULE_PARM_DESC(debug, "flags for driver debugging");
411
412 static int aha152x[] = {0, 11, 7, 1, 1, 1, DELAY_DEFAULT, 0, DEBUG_DEFAULT};
413 module_param_array(aha152x, int, NULL, 0);
414 MODULE_PARM_DESC(aha152x, "parameters for first controller");
415
416 static int aha152x1[] = {0, 11, 7, 1, 1, 1, DELAY_DEFAULT, 0, DEBUG_DEFAULT};
417 module_param_array(aha152x1, int, NULL, 0);
418 MODULE_PARM_DESC(aha152x1, "parameters for second controller");
419 #endif /* !defined(AHA152X_DEBUG) */
420 #endif /* MODULE */
421
422 #ifdef __ISAPNP__
423 static struct isapnp_device_id id_table[] __devinitdata = {
424 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
425 ISAPNP_VENDOR('A','D','P'), ISAPNP_FUNCTION(0x1505), 0 },
426 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
427 ISAPNP_VENDOR('A','D','P'), ISAPNP_FUNCTION(0x1530), 0 },
428 { ISAPNP_DEVICE_SINGLE_END, }
429 };
430 MODULE_DEVICE_TABLE(isapnp, id_table);
431 #endif /* ISAPNP */
432
433 #endif /* !PCMCIA */
434
435 static struct scsi_host_template aha152x_driver_template;
436
437 /*
438 * internal states of the host
439 *
440 */
441 enum aha152x_state {
442 idle=0,
443 unknown,
444 seldo,
445 seldi,
446 selto,
447 busfree,
448 msgo,
449 cmd,
450 msgi,
451 status,
452 datai,
453 datao,
454 parerr,
455 rsti,
456 maxstate
457 };
458
459 /*
460 * current state information of the host
461 *
462 */
463 struct aha152x_hostdata {
464 Scsi_Cmnd *issue_SC;
465 /* pending commands to issue */
466
467 Scsi_Cmnd *current_SC;
468 /* current command on the bus */
469
470 Scsi_Cmnd *disconnected_SC;
471 /* commands that disconnected */
472
473 Scsi_Cmnd *done_SC;
474 /* command that was completed */
475
476 spinlock_t lock;
477 /* host lock */
478
479 #if defined(AHA152X_DEBUG)
480 const char *locker;
481 /* which function has the lock */
482 int lockerl; /* where did it get it */
483
484 int debug; /* current debugging setting */
485 #endif
486
487 #if defined(AHA152X_STAT)
488 int total_commands;
489 int disconnections;
490 int busfree_without_any_action;
491 int busfree_without_old_command;
492 int busfree_without_new_command;
493 int busfree_without_done_command;
494 int busfree_with_check_condition;
495 int count[maxstate];
496 int count_trans[maxstate];
497 unsigned long time[maxstate];
498 #endif
499
500 int commands; /* current number of commands */
501
502 int reconnect; /* disconnection allowed */
503 int parity; /* parity checking enabled */
504 int synchronous; /* synchronous transferes enabled */
505 int delay; /* reset out delay */
506 int ext_trans; /* extended translation enabled */
507
508 int swint; /* software-interrupt was fired during detect() */
509 int service; /* bh needs to be run */
510 int in_intr; /* bh is running */
511
512 /* current state,
513 previous state,
514 last state different from current state */
515 enum aha152x_state state, prevstate, laststate;
516
517 int target;
518 /* reconnecting target */
519
520 unsigned char syncrate[8];
521 /* current synchronous transfer agreements */
522
523 unsigned char syncneg[8];
524 /* 0: no negotiation;
525 * 1: negotiation in progress;
526 * 2: negotiation completed
527 */
528
529 int cmd_i;
530 /* number of sent bytes of current command */
531
532 int msgi_len;
533 /* number of received message bytes */
534 unsigned char msgi[256];
535 /* received message bytes */
536
537 int msgo_i, msgo_len;
538 /* number of sent bytes and length of current messages */
539 unsigned char msgo[256];
540 /* pending messages */
541
542 int data_len;
543 /* number of sent/received bytes in dataphase */
544
545 unsigned long io_port0;
546 unsigned long io_port1;
547
548 #ifdef __ISAPNP__
549 struct pnp_dev *pnpdev;
550 #endif
551 struct list_head host_list;
552 };
553
554
555 /*
556 * host specific command extension
557 *
558 */
559 struct aha152x_scdata {
560 Scsi_Cmnd *next; /* next sc in queue */
561 struct completion *done;/* semaphore to block on */
562 struct scsi_eh_save ses;
563 };
564
565 /* access macros for hostdata */
566
567 #define HOSTDATA(shpnt) ((struct aha152x_hostdata *) &shpnt->hostdata)
568
569 #define HOSTNO ((shpnt)->host_no)
570
571 #define CURRENT_SC (HOSTDATA(shpnt)->current_SC)
572 #define DONE_SC (HOSTDATA(shpnt)->done_SC)
573 #define ISSUE_SC (HOSTDATA(shpnt)->issue_SC)
574 #define DISCONNECTED_SC (HOSTDATA(shpnt)->disconnected_SC)
575 #define QLOCK (HOSTDATA(shpnt)->lock)
576 #define QLOCKER (HOSTDATA(shpnt)->locker)
577 #define QLOCKERL (HOSTDATA(shpnt)->lockerl)
578
579 #define STATE (HOSTDATA(shpnt)->state)
580 #define PREVSTATE (HOSTDATA(shpnt)->prevstate)
581 #define LASTSTATE (HOSTDATA(shpnt)->laststate)
582
583 #define RECONN_TARGET (HOSTDATA(shpnt)->target)
584
585 #define CMD_I (HOSTDATA(shpnt)->cmd_i)
586
587 #define MSGO(i) (HOSTDATA(shpnt)->msgo[i])
588 #define MSGO_I (HOSTDATA(shpnt)->msgo_i)
589 #define MSGOLEN (HOSTDATA(shpnt)->msgo_len)
590 #define ADDMSGO(x) (MSGOLEN<256 ? (void)(MSGO(MSGOLEN++)=x) : aha152x_error(shpnt,"MSGO overflow"))
591
592 #define MSGI(i) (HOSTDATA(shpnt)->msgi[i])
593 #define MSGILEN (HOSTDATA(shpnt)->msgi_len)
594 #define ADDMSGI(x) (MSGILEN<256 ? (void)(MSGI(MSGILEN++)=x) : aha152x_error(shpnt,"MSGI overflow"))
595
596 #define DATA_LEN (HOSTDATA(shpnt)->data_len)
597
598 #define SYNCRATE (HOSTDATA(shpnt)->syncrate[CURRENT_SC->device->id])
599 #define SYNCNEG (HOSTDATA(shpnt)->syncneg[CURRENT_SC->device->id])
600
601 #define DELAY (HOSTDATA(shpnt)->delay)
602 #define EXT_TRANS (HOSTDATA(shpnt)->ext_trans)
603 #define TC1550 (HOSTDATA(shpnt)->tc1550)
604 #define RECONNECT (HOSTDATA(shpnt)->reconnect)
605 #define PARITY (HOSTDATA(shpnt)->parity)
606 #define SYNCHRONOUS (HOSTDATA(shpnt)->synchronous)
607
608 #define HOSTIOPORT0 (HOSTDATA(shpnt)->io_port0)
609 #define HOSTIOPORT1 (HOSTDATA(shpnt)->io_port1)
610
611 #define SCDATA(SCpnt) ((struct aha152x_scdata *) (SCpnt)->host_scribble)
612 #define SCNEXT(SCpnt) SCDATA(SCpnt)->next
613 #define SCSEM(SCpnt) SCDATA(SCpnt)->done
614
615 #define SG_ADDRESS(buffer) ((char *) sg_virt((buffer)))
616
617 /* state handling */
618 static void seldi_run(struct Scsi_Host *shpnt);
619 static void seldo_run(struct Scsi_Host *shpnt);
620 static void selto_run(struct Scsi_Host *shpnt);
621 static void busfree_run(struct Scsi_Host *shpnt);
622
623 static void msgo_init(struct Scsi_Host *shpnt);
624 static void msgo_run(struct Scsi_Host *shpnt);
625 static void msgo_end(struct Scsi_Host *shpnt);
626
627 static void cmd_init(struct Scsi_Host *shpnt);
628 static void cmd_run(struct Scsi_Host *shpnt);
629 static void cmd_end(struct Scsi_Host *shpnt);
630
631 static void datai_init(struct Scsi_Host *shpnt);
632 static void datai_run(struct Scsi_Host *shpnt);
633 static void datai_end(struct Scsi_Host *shpnt);
634
635 static void datao_init(struct Scsi_Host *shpnt);
636 static void datao_run(struct Scsi_Host *shpnt);
637 static void datao_end(struct Scsi_Host *shpnt);
638
639 static void status_run(struct Scsi_Host *shpnt);
640
641 static void msgi_run(struct Scsi_Host *shpnt);
642 static void msgi_end(struct Scsi_Host *shpnt);
643
644 static void parerr_run(struct Scsi_Host *shpnt);
645 static void rsti_run(struct Scsi_Host *shpnt);
646
647 static void is_complete(struct Scsi_Host *shpnt);
648
649 /*
650 * driver states
651 *
652 */
653 static struct {
654 char *name;
655 void (*init)(struct Scsi_Host *);
656 void (*run)(struct Scsi_Host *);
657 void (*end)(struct Scsi_Host *);
658 int spio;
659 } states[] = {
660 { "idle", NULL, NULL, NULL, 0},
661 { "unknown", NULL, NULL, NULL, 0},
662 { "seldo", NULL, seldo_run, NULL, 0},
663 { "seldi", NULL, seldi_run, NULL, 0},
664 { "selto", NULL, selto_run, NULL, 0},
665 { "busfree", NULL, busfree_run, NULL, 0},
666 { "msgo", msgo_init, msgo_run, msgo_end, 1},
667 { "cmd", cmd_init, cmd_run, cmd_end, 1},
668 { "msgi", NULL, msgi_run, msgi_end, 1},
669 { "status", NULL, status_run, NULL, 1},
670 { "datai", datai_init, datai_run, datai_end, 0},
671 { "datao", datao_init, datao_run, datao_end, 0},
672 { "parerr", NULL, parerr_run, NULL, 0},
673 { "rsti", NULL, rsti_run, NULL, 0},
674 };
675
676 /* setup & interrupt */
677 static irqreturn_t intr(int irq, void *dev_id);
678 static void reset_ports(struct Scsi_Host *shpnt);
679 static void aha152x_error(struct Scsi_Host *shpnt, char *msg);
680 static void done(struct Scsi_Host *shpnt, int error);
681
682 /* diagnostics */
683 static void disp_ports(struct Scsi_Host *shpnt);
684 static void show_command(Scsi_Cmnd * ptr);
685 static void show_queues(struct Scsi_Host *shpnt);
686 static void disp_enintr(struct Scsi_Host *shpnt);
687
688
689 /*
690 * queue services:
691 *
692 */
693 static inline void append_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC)
694 {
695 Scsi_Cmnd *end;
696
697 SCNEXT(new_SC) = NULL;
698 if (!*SC)
699 *SC = new_SC;
700 else {
701 for (end = *SC; SCNEXT(end); end = SCNEXT(end))
702 ;
703 SCNEXT(end) = new_SC;
704 }
705 }
706
707 static inline Scsi_Cmnd *remove_first_SC(Scsi_Cmnd ** SC)
708 {
709 Scsi_Cmnd *ptr;
710
711 ptr = *SC;
712 if (ptr) {
713 *SC = SCNEXT(*SC);
714 SCNEXT(ptr)=NULL;
715 }
716 return ptr;
717 }
718
719 static inline Scsi_Cmnd *remove_lun_SC(Scsi_Cmnd ** SC, int target, int lun)
720 {
721 Scsi_Cmnd *ptr, *prev;
722
723 for (ptr = *SC, prev = NULL;
724 ptr && ((ptr->device->id != target) || (ptr->device->lun != lun));
725 prev = ptr, ptr = SCNEXT(ptr))
726 ;
727
728 if (ptr) {
729 if (prev)
730 SCNEXT(prev) = SCNEXT(ptr);
731 else
732 *SC = SCNEXT(ptr);
733
734 SCNEXT(ptr)=NULL;
735 }
736
737 return ptr;
738 }
739
740 static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, Scsi_Cmnd *SCp)
741 {
742 Scsi_Cmnd *ptr, *prev;
743
744 for (ptr = *SC, prev = NULL;
745 ptr && SCp!=ptr;
746 prev = ptr, ptr = SCNEXT(ptr))
747 ;
748
749 if (ptr) {
750 if (prev)
751 SCNEXT(prev) = SCNEXT(ptr);
752 else
753 *SC = SCNEXT(ptr);
754
755 SCNEXT(ptr)=NULL;
756 }
757
758 return ptr;
759 }
760
761 static irqreturn_t swintr(int irqno, void *dev_id)
762 {
763 struct Scsi_Host *shpnt = dev_id;
764
765 HOSTDATA(shpnt)->swint++;
766
767 SETPORT(DMACNTRL0, INTEN);
768 return IRQ_HANDLED;
769 }
770
771 struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)
772 {
773 struct Scsi_Host *shpnt;
774
775 shpnt = scsi_host_alloc(&aha152x_driver_template, sizeof(struct aha152x_hostdata));
776 if (!shpnt) {
777 printk(KERN_ERR "aha152x: scsi_host_alloc failed\n");
778 return NULL;
779 }
780
781 memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt));
782 INIT_LIST_HEAD(&HOSTDATA(shpnt)->host_list);
783
784 /* need to have host registered before triggering any interrupt */
785 list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list);
786
787 shpnt->io_port = setup->io_port;
788 shpnt->n_io_port = IO_RANGE;
789 shpnt->irq = setup->irq;
790
791 if (!setup->tc1550) {
792 HOSTIOPORT0 = setup->io_port;
793 HOSTIOPORT1 = setup->io_port;
794 } else {
795 HOSTIOPORT0 = setup->io_port+0x10;
796 HOSTIOPORT1 = setup->io_port-0x10;
797 }
798
799 spin_lock_init(&QLOCK);
800 RECONNECT = setup->reconnect;
801 SYNCHRONOUS = setup->synchronous;
802 PARITY = setup->parity;
803 DELAY = setup->delay;
804 EXT_TRANS = setup->ext_trans;
805
806 #if defined(AHA152X_DEBUG)
807 HOSTDATA(shpnt)->debug = setup->debug;
808 #endif
809
810 SETPORT(SCSIID, setup->scsiid << 4);
811 shpnt->this_id = setup->scsiid;
812
813 if (setup->reconnect)
814 shpnt->can_queue = AHA152X_MAXQUEUE;
815
816 /* RESET OUT */
817 printk("aha152x: resetting bus...\n");
818 SETPORT(SCSISEQ, SCSIRSTO);
819 mdelay(256);
820 SETPORT(SCSISEQ, 0);
821 mdelay(DELAY);
822
823 reset_ports(shpnt);
824
825 printk(KERN_INFO
826 "aha152x%d%s: "
827 "vital data: rev=%x, "
828 "io=0x%03lx (0x%03lx/0x%03lx), "
829 "irq=%d, "
830 "scsiid=%d, "
831 "reconnect=%s, "
832 "parity=%s, "
833 "synchronous=%s, "
834 "delay=%d, "
835 "extended translation=%s\n",
836 shpnt->host_no, setup->tc1550 ? " (tc1550 mode)" : "",
837 GETPORT(REV) & 0x7,
838 shpnt->io_port, HOSTIOPORT0, HOSTIOPORT1,
839 shpnt->irq,
840 shpnt->this_id,
841 RECONNECT ? "enabled" : "disabled",
842 PARITY ? "enabled" : "disabled",
843 SYNCHRONOUS ? "enabled" : "disabled",
844 DELAY,
845 EXT_TRANS ? "enabled" : "disabled");
846
847 /* not expecting any interrupts */
848 SETPORT(SIMODE0, 0);
849 SETPORT(SIMODE1, 0);
850
851 if( request_irq(shpnt->irq, swintr, IRQF_DISABLED|IRQF_SHARED, "aha152x", shpnt) ) {
852 printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq);
853 goto out_host_put;
854 }
855
856 HOSTDATA(shpnt)->swint = 0;
857
858 printk(KERN_INFO "aha152x%d: trying software interrupt, ", shpnt->host_no);
859
860 mb();
861 SETPORT(DMACNTRL0, SWINT|INTEN);
862 mdelay(1000);
863 free_irq(shpnt->irq, shpnt);
864
865 if (!HOSTDATA(shpnt)->swint) {
866 if (TESTHI(DMASTAT, INTSTAT)) {
867 printk("lost.\n");
868 } else {
869 printk("failed.\n");
870 }
871
872 SETPORT(DMACNTRL0, INTEN);
873
874 printk(KERN_ERR "aha152x%d: irq %d possibly wrong. "
875 "Please verify.\n", shpnt->host_no, shpnt->irq);
876 goto out_host_put;
877 }
878 printk("ok.\n");
879
880
881 /* clear interrupts */
882 SETPORT(SSTAT0, 0x7f);
883 SETPORT(SSTAT1, 0xef);
884
885 if ( request_irq(shpnt->irq, intr, IRQF_DISABLED|IRQF_SHARED, "aha152x", shpnt) ) {
886 printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq);
887 goto out_host_put;
888 }
889
890 if( scsi_add_host(shpnt, NULL) ) {
891 free_irq(shpnt->irq, shpnt);
892 printk(KERN_ERR "aha152x%d: failed to add host.\n", shpnt->host_no);
893 goto out_host_put;
894 }
895
896 scsi_scan_host(shpnt);
897
898 return shpnt;
899
900 out_host_put:
901 list_del(&HOSTDATA(shpnt)->host_list);
902 scsi_host_put(shpnt);
903
904 return NULL;
905 }
906
907 void aha152x_release(struct Scsi_Host *shpnt)
908 {
909 if (!shpnt)
910 return;
911
912 scsi_remove_host(shpnt);
913 if (shpnt->irq)
914 free_irq(shpnt->irq, shpnt);
915
916 #if !defined(PCMCIA)
917 if (shpnt->io_port)
918 release_region(shpnt->io_port, IO_RANGE);
919 #endif
920
921 #ifdef __ISAPNP__
922 if (HOSTDATA(shpnt)->pnpdev)
923 pnp_device_detach(HOSTDATA(shpnt)->pnpdev);
924 #endif
925
926 list_del(&HOSTDATA(shpnt)->host_list);
927 scsi_host_put(shpnt);
928 }
929
930
931 /*
932 * setup controller to generate interrupts depending
933 * on current state (lock has to be acquired)
934 *
935 */
936 static int setup_expected_interrupts(struct Scsi_Host *shpnt)
937 {
938 if(CURRENT_SC) {
939 CURRENT_SC->SCp.phase |= 1 << 16;
940
941 if(CURRENT_SC->SCp.phase & selecting) {
942 DPRINTK(debug_intr, DEBUG_LEAD "expecting: (seldo) (seltimo) (seldi)\n", CMDINFO(CURRENT_SC));
943 SETPORT(SSTAT1, SELTO);
944 SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0));
945 SETPORT(SIMODE1, ENSELTIMO);
946 } else {
947 DPRINTK(debug_intr, DEBUG_LEAD "expecting: (phase change) (busfree) %s\n", CMDINFO(CURRENT_SC), CURRENT_SC->SCp.phase & spiordy ? "(spiordy)" : "");
948 SETPORT(SIMODE0, (CURRENT_SC->SCp.phase & spiordy) ? ENSPIORDY : 0);
949 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
950 }
951 } else if(STATE==seldi) {
952 DPRINTK(debug_intr, DEBUG_LEAD "expecting: (phase change) (identify)\n", CMDINFO(CURRENT_SC));
953 SETPORT(SIMODE0, 0);
954 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
955 } else {
956 DPRINTK(debug_intr, DEBUG_LEAD "expecting: %s %s\n",
957 CMDINFO(CURRENT_SC),
958 DISCONNECTED_SC ? "(reselection)" : "",
959 ISSUE_SC ? "(busfree)" : "");
960 SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0);
961 SETPORT(SIMODE1, ENSCSIRST | ( (ISSUE_SC||DONE_SC) ? ENBUSFREE : 0));
962 }
963
964 if(!HOSTDATA(shpnt)->in_intr)
965 SETBITS(DMACNTRL0, INTEN);
966
967 return TESTHI(DMASTAT, INTSTAT);
968 }
969
970
971 /*
972 * Queue a command and setup interrupts for a free bus.
973 */
974 static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, struct completion *complete,
975 int phase, void (*done)(Scsi_Cmnd *))
976 {
977 struct Scsi_Host *shpnt = SCpnt->device->host;
978 unsigned long flags;
979
980 #if defined(AHA152X_DEBUG)
981 if (HOSTDATA(shpnt)->debug & debug_queue) {
982 printk(INFO_LEAD "queue: %p; cmd_len=%d pieces=%d size=%u cmnd=",
983 CMDINFO(SCpnt), SCpnt, SCpnt->cmd_len,
984 scsi_sg_count(SCpnt), scsi_bufflen(SCpnt));
985 __scsi_print_command(SCpnt->cmnd);
986 }
987 #endif
988
989 SCpnt->scsi_done = done;
990 SCpnt->SCp.phase = not_issued | phase;
991 SCpnt->SCp.Status = 0x1; /* Ilegal status by SCSI standard */
992 SCpnt->SCp.Message = 0;
993 SCpnt->SCp.have_data_in = 0;
994 SCpnt->SCp.sent_command = 0;
995
996 if(SCpnt->SCp.phase & (resetting|check_condition)) {
997 if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) {
998 printk(ERR_LEAD "cannot reuse command\n", CMDINFO(SCpnt));
999 return FAILED;
1000 }
1001 } else {
1002 SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC);
1003 if(!SCpnt->host_scribble) {
1004 printk(ERR_LEAD "allocation failed\n", CMDINFO(SCpnt));
1005 return FAILED;
1006 }
1007 }
1008
1009 SCNEXT(SCpnt) = NULL;
1010 SCSEM(SCpnt) = complete;
1011
1012 /* setup scratch area
1013 SCp.ptr : buffer pointer
1014 SCp.this_residual : buffer length
1015 SCp.buffer : next buffer
1016 SCp.buffers_residual : left buffers in list
1017 SCp.phase : current state of the command */
1018
1019 if ((phase & resetting) || !scsi_sglist(SCpnt)) {
1020 SCpnt->SCp.ptr = NULL;
1021 SCpnt->SCp.this_residual = 0;
1022 scsi_set_resid(SCpnt, 0);
1023 SCpnt->SCp.buffer = NULL;
1024 SCpnt->SCp.buffers_residual = 0;
1025 } else {
1026 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
1027 SCpnt->SCp.buffer = scsi_sglist(SCpnt);
1028 SCpnt->SCp.ptr = SG_ADDRESS(SCpnt->SCp.buffer);
1029 SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length;
1030 SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1;
1031 }
1032
1033 DO_LOCK(flags);
1034
1035 #if defined(AHA152X_STAT)
1036 HOSTDATA(shpnt)->total_commands++;
1037 #endif
1038
1039 /* Turn led on, when this is the first command. */
1040 HOSTDATA(shpnt)->commands++;
1041 if (HOSTDATA(shpnt)->commands==1)
1042 SETPORT(PORTA, 1);
1043
1044 append_SC(&ISSUE_SC, SCpnt);
1045
1046 if(!HOSTDATA(shpnt)->in_intr)
1047 setup_expected_interrupts(shpnt);
1048
1049 DO_UNLOCK(flags);
1050
1051 return 0;
1052 }
1053
1054 /*
1055 * queue a command
1056 *
1057 */
1058 static int aha152x_queue(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
1059 {
1060 #if 0
1061 if(*SCpnt->cmnd == REQUEST_SENSE) {
1062 SCpnt->result = 0;
1063 done(SCpnt);
1064
1065 return 0;
1066 }
1067 #endif
1068
1069 return aha152x_internal_queue(SCpnt, NULL, 0, done);
1070 }
1071
1072
1073 /*
1074 *
1075 *
1076 */
1077 static void reset_done(Scsi_Cmnd *SCpnt)
1078 {
1079 #if 0
1080 struct Scsi_Host *shpnt = SCpnt->host;
1081 DPRINTK(debug_eh, INFO_LEAD "reset_done called\n", CMDINFO(SCpnt));
1082 #endif
1083 if(SCSEM(SCpnt)) {
1084 complete(SCSEM(SCpnt));
1085 } else {
1086 printk(KERN_ERR "aha152x: reset_done w/o completion\n");
1087 }
1088 }
1089
1090 /*
1091 * Abort a command
1092 *
1093 */
1094 static int aha152x_abort(Scsi_Cmnd *SCpnt)
1095 {
1096 struct Scsi_Host *shpnt = SCpnt->device->host;
1097 Scsi_Cmnd *ptr;
1098 unsigned long flags;
1099
1100 #if defined(AHA152X_DEBUG)
1101 if(HOSTDATA(shpnt)->debug & debug_eh) {
1102 printk(DEBUG_LEAD "abort(%p)", CMDINFO(SCpnt), SCpnt);
1103 show_queues(shpnt);
1104 }
1105 #endif
1106
1107 DO_LOCK(flags);
1108
1109 ptr=remove_SC(&ISSUE_SC, SCpnt);
1110
1111 if(ptr) {
1112 DPRINTK(debug_eh, DEBUG_LEAD "not yet issued - SUCCESS\n", CMDINFO(SCpnt));
1113
1114 HOSTDATA(shpnt)->commands--;
1115 if (!HOSTDATA(shpnt)->commands)
1116 SETPORT(PORTA, 0);
1117 DO_UNLOCK(flags);
1118
1119 kfree(SCpnt->host_scribble);
1120 SCpnt->host_scribble=NULL;
1121
1122 return SUCCESS;
1123 }
1124
1125 DO_UNLOCK(flags);
1126
1127 /*
1128 * FIXME:
1129 * for current command: queue ABORT for message out and raise ATN
1130 * for disconnected command: pseudo SC with ABORT message or ABORT on reselection?
1131 *
1132 */
1133
1134 printk(ERR_LEAD "cannot abort running or disconnected command\n", CMDINFO(SCpnt));
1135
1136 return FAILED;
1137 }
1138
1139 /*
1140 * Reset a device
1141 *
1142 */
1143 static int aha152x_device_reset(Scsi_Cmnd * SCpnt)
1144 {
1145 struct Scsi_Host *shpnt = SCpnt->device->host;
1146 DECLARE_COMPLETION(done);
1147 int ret, issued, disconnected;
1148 unsigned char old_cmd_len = SCpnt->cmd_len;
1149 unsigned long flags;
1150 unsigned long timeleft;
1151
1152 #if defined(AHA152X_DEBUG)
1153 if(HOSTDATA(shpnt)->debug & debug_eh) {
1154 printk(INFO_LEAD "aha152x_device_reset(%p)", CMDINFO(SCpnt), SCpnt);
1155 show_queues(shpnt);
1156 }
1157 #endif
1158
1159 if(CURRENT_SC==SCpnt) {
1160 printk(ERR_LEAD "cannot reset current device\n", CMDINFO(SCpnt));
1161 return FAILED;
1162 }
1163
1164 DO_LOCK(flags);
1165 issued = remove_SC(&ISSUE_SC, SCpnt) == NULL;
1166 disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt);
1167 DO_UNLOCK(flags);
1168
1169 SCpnt->cmd_len = 0;
1170
1171 aha152x_internal_queue(SCpnt, &done, resetting, reset_done);
1172
1173 timeleft = wait_for_completion_timeout(&done, 100*HZ);
1174 if (!timeleft) {
1175 /* remove command from issue queue */
1176 DO_LOCK(flags);
1177 remove_SC(&ISSUE_SC, SCpnt);
1178 DO_UNLOCK(flags);
1179 }
1180
1181 SCpnt->cmd_len = old_cmd_len;
1182
1183 DO_LOCK(flags);
1184
1185 if(SCpnt->SCp.phase & resetted) {
1186 HOSTDATA(shpnt)->commands--;
1187 if (!HOSTDATA(shpnt)->commands)
1188 SETPORT(PORTA, 0);
1189 kfree(SCpnt->host_scribble);
1190 SCpnt->host_scribble=NULL;
1191
1192 ret = SUCCESS;
1193 } else {
1194 /* requeue */
1195 if(!issued) {
1196 append_SC(&ISSUE_SC, SCpnt);
1197 } else if(disconnected) {
1198 append_SC(&DISCONNECTED_SC, SCpnt);
1199 }
1200
1201 ret = FAILED;
1202 }
1203
1204 DO_UNLOCK(flags);
1205 return ret;
1206 }
1207
1208 static void free_hard_reset_SCs(struct Scsi_Host *shpnt, Scsi_Cmnd **SCs)
1209 {
1210 Scsi_Cmnd *ptr;
1211
1212 ptr=*SCs;
1213 while(ptr) {
1214 Scsi_Cmnd *next;
1215
1216 if(SCDATA(ptr)) {
1217 next = SCNEXT(ptr);
1218 } else {
1219 printk(DEBUG_LEAD "queue corrupted at %p\n", CMDINFO(ptr), ptr);
1220 next = NULL;
1221 }
1222
1223 if (!ptr->device->soft_reset) {
1224 DPRINTK(debug_eh, DEBUG_LEAD "disconnected command %p removed\n", CMDINFO(ptr), ptr);
1225 remove_SC(SCs, ptr);
1226 HOSTDATA(shpnt)->commands--;
1227 kfree(ptr->host_scribble);
1228 ptr->host_scribble=NULL;
1229 }
1230
1231 ptr = next;
1232 }
1233 }
1234
1235 /*
1236 * Reset the bus
1237 *
1238 */
1239 static int aha152x_bus_reset_host(struct Scsi_Host *shpnt)
1240 {
1241 unsigned long flags;
1242
1243 DO_LOCK(flags);
1244
1245 #if defined(AHA152X_DEBUG)
1246 if(HOSTDATA(shpnt)->debug & debug_eh) {
1247 printk(KERN_DEBUG "scsi%d: bus reset", shpnt->host_no);
1248 show_queues(shpnt);
1249 }
1250 #endif
1251
1252 free_hard_reset_SCs(shpnt, &ISSUE_SC);
1253 free_hard_reset_SCs(shpnt, &DISCONNECTED_SC);
1254
1255 DPRINTK(debug_eh, KERN_DEBUG "scsi%d: resetting bus\n", shpnt->host_no);
1256
1257 SETPORT(SCSISEQ, SCSIRSTO);
1258 mdelay(256);
1259 SETPORT(SCSISEQ, 0);
1260 mdelay(DELAY);
1261
1262 DPRINTK(debug_eh, KERN_DEBUG "scsi%d: bus resetted\n", shpnt->host_no);
1263
1264 setup_expected_interrupts(shpnt);
1265 if(HOSTDATA(shpnt)->commands==0)
1266 SETPORT(PORTA, 0);
1267
1268 DO_UNLOCK(flags);
1269
1270 return SUCCESS;
1271 }
1272
1273 /*
1274 * Reset the bus
1275 *
1276 */
1277 static int aha152x_bus_reset(Scsi_Cmnd *SCpnt)
1278 {
1279 return aha152x_bus_reset_host(SCpnt->device->host);
1280 }
1281
1282 /*
1283 * Restore default values to the AIC-6260 registers and reset the fifos
1284 *
1285 */
1286 static void reset_ports(struct Scsi_Host *shpnt)
1287 {
1288 unsigned long flags;
1289
1290 /* disable interrupts */
1291 SETPORT(DMACNTRL0, RSTFIFO);
1292
1293 SETPORT(SCSISEQ, 0);
1294
1295 SETPORT(SXFRCTL1, 0);
1296 SETPORT(SCSISIG, 0);
1297 SETRATE(0);
1298
1299 /* clear all interrupt conditions */
1300 SETPORT(SSTAT0, 0x7f);
1301 SETPORT(SSTAT1, 0xef);
1302
1303 SETPORT(SSTAT4, SYNCERR | FWERR | FRERR);
1304
1305 SETPORT(DMACNTRL0, 0);
1306 SETPORT(DMACNTRL1, 0);
1307
1308 SETPORT(BRSTCNTRL, 0xf1);
1309
1310 /* clear SCSI fifos and transfer count */
1311 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1312 SETPORT(SXFRCTL0, CH1);
1313
1314 DO_LOCK(flags);
1315 setup_expected_interrupts(shpnt);
1316 DO_UNLOCK(flags);
1317 }
1318
1319 /*
1320 * Reset the host (bus and controller)
1321 *
1322 */
1323 int aha152x_host_reset_host(struct Scsi_Host *shpnt)
1324 {
1325 DPRINTK(debug_eh, KERN_DEBUG "scsi%d: host reset\n", shpnt->host_no);
1326
1327 aha152x_bus_reset_host(shpnt);
1328
1329 DPRINTK(debug_eh, KERN_DEBUG "scsi%d: resetting ports\n", shpnt->host_no);
1330 reset_ports(shpnt);
1331
1332 return SUCCESS;
1333 }
1334
1335 /*
1336 * Reset the host (bus and controller)
1337 *
1338 */
1339 static int aha152x_host_reset(Scsi_Cmnd *SCpnt)
1340 {
1341 return aha152x_host_reset_host(SCpnt->device->host);
1342 }
1343
1344 /*
1345 * Return the "logical geometry"
1346 *
1347 */
1348 static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev,
1349 sector_t capacity, int *info_array)
1350 {
1351 struct Scsi_Host *shpnt = sdev->host;
1352
1353 /* try default translation */
1354 info_array[0] = 64;
1355 info_array[1] = 32;
1356 info_array[2] = (unsigned long)capacity / (64 * 32);
1357
1358 /* for disks >1GB do some guessing */
1359 if (info_array[2] >= 1024) {
1360 int info[3];
1361
1362 /* try to figure out the geometry from the partition table */
1363 if (scsicam_bios_param(bdev, capacity, info) < 0 ||
1364 !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) {
1365 if (EXT_TRANS) {
1366 printk(KERN_NOTICE
1367 "aha152x: unable to verify geometry for disk with >1GB.\n"
1368 " using extended translation.\n");
1369 info_array[0] = 255;
1370 info_array[1] = 63;
1371 info_array[2] = (unsigned long)capacity / (255 * 63);
1372 } else {
1373 printk(KERN_NOTICE
1374 "aha152x: unable to verify geometry for disk with >1GB.\n"
1375 " Using default translation. Please verify yourself.\n"
1376 " Perhaps you need to enable extended translation in the driver.\n"
1377 " See Documentation/scsi/aha152x.txt for details.\n");
1378 }
1379 } else {
1380 info_array[0] = info[0];
1381 info_array[1] = info[1];
1382 info_array[2] = info[2];
1383
1384 if (info[0] == 255 && !EXT_TRANS) {
1385 printk(KERN_NOTICE
1386 "aha152x: current partition table is using extended translation.\n"
1387 " using it also, although it's not explicitly enabled.\n");
1388 }
1389 }
1390 }
1391
1392 return 0;
1393 }
1394
1395 /*
1396 * Internal done function
1397 *
1398 */
1399 static void done(struct Scsi_Host *shpnt, int error)
1400 {
1401 if (CURRENT_SC) {
1402 if(DONE_SC)
1403 printk(ERR_LEAD "there's already a completed command %p - will cause abort\n", CMDINFO(CURRENT_SC), DONE_SC);
1404
1405 DONE_SC = CURRENT_SC;
1406 CURRENT_SC = NULL;
1407 DONE_SC->result = error;
1408 } else
1409 printk(KERN_ERR "aha152x: done() called outside of command\n");
1410 }
1411
1412 static struct work_struct aha152x_tq;
1413
1414 /*
1415 * Run service completions on the card with interrupts enabled.
1416 *
1417 */
1418 static void run(struct work_struct *work)
1419 {
1420 struct aha152x_hostdata *hd;
1421
1422 list_for_each_entry(hd, &aha152x_host_list, host_list) {
1423 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
1424
1425 is_complete(shost);
1426 }
1427 }
1428
1429 /*
1430 * Interrupt handler
1431 *
1432 */
1433 static irqreturn_t intr(int irqno, void *dev_id)
1434 {
1435 struct Scsi_Host *shpnt = dev_id;
1436 unsigned long flags;
1437 unsigned char rev, dmacntrl0;
1438
1439 /*
1440 * Read a couple of registers that are known to not be all 1's. If
1441 * we read all 1's (-1), that means that either:
1442 *
1443 * a. The host adapter chip has gone bad, and we cannot control it,
1444 * OR
1445 * b. The host adapter is a PCMCIA card that has been ejected
1446 *
1447 * In either case, we cannot do anything with the host adapter at
1448 * this point in time. So just ignore the interrupt and return.
1449 * In the latter case, the interrupt might actually be meant for
1450 * someone else sharing this IRQ, and that driver will handle it.
1451 */
1452 rev = GETPORT(REV);
1453 dmacntrl0 = GETPORT(DMACNTRL0);
1454 if ((rev == 0xFF) && (dmacntrl0 == 0xFF))
1455 return IRQ_NONE;
1456
1457 if( TESTLO(DMASTAT, INTSTAT) )
1458 return IRQ_NONE;
1459
1460 /* no more interrupts from the controller, while we're busy.
1461 INTEN is restored by the BH handler */
1462 CLRBITS(DMACNTRL0, INTEN);
1463
1464 DO_LOCK(flags);
1465 if( HOSTDATA(shpnt)->service==0 ) {
1466 HOSTDATA(shpnt)->service=1;
1467
1468 /* Poke the BH handler */
1469 INIT_WORK(&aha152x_tq, run);
1470 schedule_work(&aha152x_tq);
1471 }
1472 DO_UNLOCK(flags);
1473
1474 return IRQ_HANDLED;
1475 }
1476
1477 /*
1478 * busfree phase
1479 * - handle completition/disconnection/error of current command
1480 * - start selection for next command (if any)
1481 */
1482 static void busfree_run(struct Scsi_Host *shpnt)
1483 {
1484 unsigned long flags;
1485 #if defined(AHA152X_STAT)
1486 int action=0;
1487 #endif
1488
1489 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1490 SETPORT(SXFRCTL0, CH1);
1491
1492 SETPORT(SSTAT1, CLRBUSFREE);
1493
1494 if(CURRENT_SC) {
1495 #if defined(AHA152X_STAT)
1496 action++;
1497 #endif
1498 CURRENT_SC->SCp.phase &= ~syncneg;
1499
1500 if(CURRENT_SC->SCp.phase & completed) {
1501 /* target sent COMMAND COMPLETE */
1502 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16));
1503
1504 } else if(CURRENT_SC->SCp.phase & aborted) {
1505 DPRINTK(debug_eh, DEBUG_LEAD "ABORT sent\n", CMDINFO(CURRENT_SC));
1506 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_ABORT << 16));
1507
1508 } else if(CURRENT_SC->SCp.phase & resetted) {
1509 DPRINTK(debug_eh, DEBUG_LEAD "BUS DEVICE RESET sent\n", CMDINFO(CURRENT_SC));
1510 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_RESET << 16));
1511
1512 } else if(CURRENT_SC->SCp.phase & disconnected) {
1513 /* target sent DISCONNECT */
1514 DPRINTK(debug_selection, DEBUG_LEAD "target disconnected at %d/%d\n",
1515 CMDINFO(CURRENT_SC),
1516 scsi_get_resid(CURRENT_SC),
1517 scsi_bufflen(CURRENT_SC));
1518 #if defined(AHA152X_STAT)
1519 HOSTDATA(shpnt)->disconnections++;
1520 #endif
1521 append_SC(&DISCONNECTED_SC, CURRENT_SC);
1522 CURRENT_SC->SCp.phase |= 1 << 16;
1523 CURRENT_SC = NULL;
1524
1525 } else {
1526 done(shpnt, DID_ERROR << 16);
1527 }
1528 #if defined(AHA152X_STAT)
1529 } else {
1530 HOSTDATA(shpnt)->busfree_without_old_command++;
1531 #endif
1532 }
1533
1534 DO_LOCK(flags);
1535
1536 if(DONE_SC) {
1537 #if defined(AHA152X_STAT)
1538 action++;
1539 #endif
1540
1541 if(DONE_SC->SCp.phase & check_condition) {
1542 struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC;
1543 struct aha152x_scdata *sc = SCDATA(cmd);
1544
1545 #if 0
1546 if(HOSTDATA(shpnt)->debug & debug_eh) {
1547 printk(ERR_LEAD "received sense: ", CMDINFO(DONE_SC));
1548 scsi_print_sense("bh", DONE_SC);
1549 }
1550 #endif
1551
1552 scsi_eh_restore_cmnd(cmd, &sc->ses);
1553
1554 cmd->SCp.Status = SAM_STAT_CHECK_CONDITION;
1555
1556 HOSTDATA(shpnt)->commands--;
1557 if (!HOSTDATA(shpnt)->commands)
1558 SETPORT(PORTA, 0); /* turn led off */
1559 } else if(DONE_SC->SCp.Status==SAM_STAT_CHECK_CONDITION) {
1560 #if defined(AHA152X_STAT)
1561 HOSTDATA(shpnt)->busfree_with_check_condition++;
1562 #endif
1563 #if 0
1564 DPRINTK(debug_eh, ERR_LEAD "CHECK CONDITION found\n", CMDINFO(DONE_SC));
1565 #endif
1566
1567 if(!(DONE_SC->SCp.phase & not_issued)) {
1568 struct aha152x_scdata *sc;
1569 Scsi_Cmnd *ptr = DONE_SC;
1570 DONE_SC=NULL;
1571 #if 0
1572 DPRINTK(debug_eh, ERR_LEAD "requesting sense\n", CMDINFO(ptr));
1573 #endif
1574
1575 sc = SCDATA(ptr);
1576 /* It was allocated in aha152x_internal_queue? */
1577 BUG_ON(!sc);
1578 scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0);
1579
1580 DO_UNLOCK(flags);
1581 aha152x_internal_queue(ptr, NULL, check_condition, ptr->scsi_done);
1582 DO_LOCK(flags);
1583 #if 0
1584 } else {
1585 DPRINTK(debug_eh, ERR_LEAD "command not issued - CHECK CONDITION ignored\n", CMDINFO(DONE_SC));
1586 #endif
1587 }
1588 }
1589
1590 if(DONE_SC && DONE_SC->scsi_done) {
1591 #if defined(AHA152X_DEBUG)
1592 int hostno=DONE_SC->device->host->host_no;
1593 int id=DONE_SC->device->id & 0xf;
1594 int lun=DONE_SC->device->lun & 0x7;
1595 #endif
1596 Scsi_Cmnd *ptr = DONE_SC;
1597 DONE_SC=NULL;
1598
1599 /* turn led off, when no commands are in the driver */
1600 HOSTDATA(shpnt)->commands--;
1601 if (!HOSTDATA(shpnt)->commands)
1602 SETPORT(PORTA, 0); /* turn led off */
1603
1604 if(ptr->scsi_done != reset_done) {
1605 kfree(ptr->host_scribble);
1606 ptr->host_scribble=NULL;
1607 }
1608
1609 DO_UNLOCK(flags);
1610 DPRINTK(debug_done, DEBUG_LEAD "calling scsi_done(%p)\n", hostno, id, lun, ptr);
1611 ptr->scsi_done(ptr);
1612 DPRINTK(debug_done, DEBUG_LEAD "scsi_done(%p) returned\n", hostno, id, lun, ptr);
1613 DO_LOCK(flags);
1614 }
1615
1616 DONE_SC=NULL;
1617 #if defined(AHA152X_STAT)
1618 } else {
1619 HOSTDATA(shpnt)->busfree_without_done_command++;
1620 #endif
1621 }
1622
1623 if(ISSUE_SC)
1624 CURRENT_SC = remove_first_SC(&ISSUE_SC);
1625
1626 DO_UNLOCK(flags);
1627
1628 if(CURRENT_SC) {
1629 #if defined(AHA152X_STAT)
1630 action++;
1631 #endif
1632 CURRENT_SC->SCp.phase |= selecting;
1633
1634 DPRINTK(debug_selection, DEBUG_LEAD "selecting target\n", CMDINFO(CURRENT_SC));
1635
1636 /* clear selection timeout */
1637 SETPORT(SSTAT1, SELTO);
1638
1639 SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id);
1640 SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER);
1641 SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0));
1642 } else {
1643 #if defined(AHA152X_STAT)
1644 HOSTDATA(shpnt)->busfree_without_new_command++;
1645 #endif
1646 SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0);
1647 }
1648
1649 #if defined(AHA152X_STAT)
1650 if(!action)
1651 HOSTDATA(shpnt)->busfree_without_any_action++;
1652 #endif
1653 }
1654
1655 /*
1656 * Selection done (OUT)
1657 * - queue IDENTIFY message and SDTR to selected target for message out
1658 * (ATN asserted automagically via ENAUTOATNO in busfree())
1659 */
1660 static void seldo_run(struct Scsi_Host *shpnt)
1661 {
1662 SETPORT(SCSISIG, 0);
1663 SETPORT(SSTAT1, CLRBUSFREE);
1664 SETPORT(SSTAT1, CLRPHASECHG);
1665
1666 CURRENT_SC->SCp.phase &= ~(selecting|not_issued);
1667
1668 SETPORT(SCSISEQ, 0);
1669
1670 if (TESTLO(SSTAT0, SELDO)) {
1671 printk(ERR_LEAD "aha152x: passing bus free condition\n", CMDINFO(CURRENT_SC));
1672 done(shpnt, DID_NO_CONNECT << 16);
1673 return;
1674 }
1675
1676 SETPORT(SSTAT0, CLRSELDO);
1677
1678 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1679
1680 if (CURRENT_SC->SCp.phase & aborting) {
1681 ADDMSGO(ABORT);
1682 } else if (CURRENT_SC->SCp.phase & resetting) {
1683 ADDMSGO(BUS_DEVICE_RESET);
1684 } else if (SYNCNEG==0 && SYNCHRONOUS) {
1685 CURRENT_SC->SCp.phase |= syncneg;
1686 MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8);
1687 SYNCNEG=1; /* negotiation in progress */
1688 }
1689
1690 SETRATE(SYNCRATE);
1691 }
1692
1693 /*
1694 * Selection timeout
1695 * - return command to mid-level with failure cause
1696 *
1697 */
1698 static void selto_run(struct Scsi_Host *shpnt)
1699 {
1700 SETPORT(SCSISEQ, 0);
1701 SETPORT(SSTAT1, CLRSELTIMO);
1702
1703 DPRINTK(debug_selection, DEBUG_LEAD "selection timeout\n", CMDINFO(CURRENT_SC));
1704
1705 if(!CURRENT_SC) {
1706 DPRINTK(debug_selection, DEBUG_LEAD "!CURRENT_SC\n", CMDINFO(CURRENT_SC));
1707 return;
1708 }
1709
1710 CURRENT_SC->SCp.phase &= ~selecting;
1711
1712 if (CURRENT_SC->SCp.phase & aborted) {
1713 DPRINTK(debug_selection, DEBUG_LEAD "aborted\n", CMDINFO(CURRENT_SC));
1714 done(shpnt, DID_ABORT << 16);
1715 } else if (TESTLO(SSTAT0, SELINGO)) {
1716 DPRINTK(debug_selection, DEBUG_LEAD "arbitration not won\n", CMDINFO(CURRENT_SC));
1717 done(shpnt, DID_BUS_BUSY << 16);
1718 } else {
1719 /* ARBITRATION won, but SELECTION failed */
1720 DPRINTK(debug_selection, DEBUG_LEAD "selection failed\n", CMDINFO(CURRENT_SC));
1721 done(shpnt, DID_NO_CONNECT << 16);
1722 }
1723 }
1724
1725 /*
1726 * Selection in done
1727 * - put current command back to issue queue
1728 * (reconnection of a disconnected nexus instead
1729 * of successful selection out)
1730 *
1731 */
1732 static void seldi_run(struct Scsi_Host *shpnt)
1733 {
1734 int selid;
1735 int target;
1736 unsigned long flags;
1737
1738 SETPORT(SCSISIG, 0);
1739 SETPORT(SSTAT0, CLRSELDI);
1740 SETPORT(SSTAT1, CLRBUSFREE);
1741 SETPORT(SSTAT1, CLRPHASECHG);
1742
1743 if(CURRENT_SC) {
1744 if(!(CURRENT_SC->SCp.phase & not_issued))
1745 printk(ERR_LEAD "command should not have been issued yet\n", CMDINFO(CURRENT_SC));
1746
1747 DPRINTK(debug_selection, ERR_LEAD "command requeued - reselection\n", CMDINFO(CURRENT_SC));
1748
1749 DO_LOCK(flags);
1750 append_SC(&ISSUE_SC, CURRENT_SC);
1751 DO_UNLOCK(flags);
1752
1753 CURRENT_SC = NULL;
1754 }
1755
1756 if(!DISCONNECTED_SC) {
1757 DPRINTK(debug_selection, DEBUG_LEAD "unexpected SELDI ", CMDINFO(CURRENT_SC));
1758 return;
1759 }
1760
1761 RECONN_TARGET=-1;
1762
1763 selid = GETPORT(SELID) & ~(1 << shpnt->this_id);
1764
1765 if (selid==0) {
1766 printk("aha152x%d: target id unknown (%02x)\n", HOSTNO, selid);
1767 return;
1768 }
1769
1770 for(target=7; !(selid & (1 << target)); target--)
1771 ;
1772
1773 if(selid & ~(1 << target)) {
1774 printk("aha152x%d: multiple targets reconnected (%02x)\n",
1775 HOSTNO, selid);
1776 }
1777
1778
1779 SETPORT(SCSIID, (shpnt->this_id << OID_) | target);
1780 SETPORT(SCSISEQ, 0);
1781
1782 SETRATE(HOSTDATA(shpnt)->syncrate[target]);
1783
1784 RECONN_TARGET=target;
1785 DPRINTK(debug_selection, DEBUG_LEAD "target %d reselected (%02x).\n", CMDINFO(CURRENT_SC), target, selid);
1786 }
1787
1788 /*
1789 * message in phase
1790 * - handle initial message after reconnection to identify
1791 * reconnecting nexus
1792 * - queue command on DISCONNECTED_SC on DISCONNECT message
1793 * - set completed flag on COMMAND COMPLETE
1794 * (other completition code moved to busfree_run)
1795 * - handle response to SDTR
1796 * - clear synchronous transfer agreements on BUS RESET
1797 *
1798 * FIXME: what about SAVE POINTERS, RESTORE POINTERS?
1799 *
1800 */
1801 static void msgi_run(struct Scsi_Host *shpnt)
1802 {
1803 for(;;) {
1804 int sstat1 = GETPORT(SSTAT1);
1805
1806 if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT))
1807 return;
1808
1809 if(TESTLO(SSTAT0,SPIORDY)) {
1810 DPRINTK(debug_msgi, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
1811 return;
1812 }
1813
1814 ADDMSGI(GETPORT(SCSIDAT));
1815
1816 #if defined(AHA152X_DEBUG)
1817 if (HOSTDATA(shpnt)->debug & debug_msgi) {
1818 printk(INFO_LEAD "inbound message %02x ", CMDINFO(CURRENT_SC), MSGI(0));
1819 spi_print_msg(&MSGI(0));
1820 printk("\n");
1821 }
1822 #endif
1823
1824 if(!CURRENT_SC) {
1825 if(LASTSTATE!=seldi) {
1826 printk(KERN_ERR "aha152x%d: message in w/o current command not after reselection\n", HOSTNO);
1827 }
1828
1829 /*
1830 * Handle reselection
1831 */
1832 if(!(MSGI(0) & IDENTIFY_BASE)) {
1833 printk(KERN_ERR "aha152x%d: target didn't identify after reselection\n", HOSTNO);
1834 continue;
1835 }
1836
1837 CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f);
1838
1839 if (!CURRENT_SC) {
1840 show_queues(shpnt);
1841 printk(KERN_ERR "aha152x%d: no disconnected command for target %d/%d\n", HOSTNO, RECONN_TARGET, MSGI(0) & 0x3f);
1842 continue;
1843 }
1844
1845 DPRINTK(debug_msgi, DEBUG_LEAD "target reconnected\n", CMDINFO(CURRENT_SC));
1846
1847 CURRENT_SC->SCp.Message = MSGI(0);
1848 CURRENT_SC->SCp.phase &= ~disconnected;
1849
1850 MSGILEN=0;
1851
1852 /* next message if any */
1853 continue;
1854 }
1855
1856 CURRENT_SC->SCp.Message = MSGI(0);
1857
1858 switch (MSGI(0)) {
1859 case DISCONNECT:
1860 if (!RECONNECT)
1861 printk(WARN_LEAD "target was not allowed to disconnect\n", CMDINFO(CURRENT_SC));
1862
1863 CURRENT_SC->SCp.phase |= disconnected;
1864 break;
1865
1866 case COMMAND_COMPLETE:
1867 if(CURRENT_SC->SCp.phase & completed)
1868 DPRINTK(debug_msgi, DEBUG_LEAD "again COMMAND COMPLETE\n", CMDINFO(CURRENT_SC));
1869
1870 CURRENT_SC->SCp.phase |= completed;
1871 break;
1872
1873 case MESSAGE_REJECT:
1874 if (SYNCNEG==1) {
1875 printk(INFO_LEAD "Synchronous Data Transfer Request was rejected\n", CMDINFO(CURRENT_SC));
1876 SYNCNEG=2; /* negotiation completed */
1877 } else
1878 printk(INFO_LEAD "inbound message (MESSAGE REJECT)\n", CMDINFO(CURRENT_SC));
1879 break;
1880
1881 case SAVE_POINTERS:
1882 break;
1883
1884 case RESTORE_POINTERS:
1885 break;
1886
1887 case EXTENDED_MESSAGE:
1888 if(MSGILEN<2 || MSGILEN<MSGI(1)+2) {
1889 /* not yet completed */
1890 continue;
1891 }
1892
1893 switch (MSGI(2)) {
1894 case EXTENDED_SDTR:
1895 {
1896 long ticks;
1897
1898 if (MSGI(1) != 3) {
1899 printk(ERR_LEAD "SDTR message length!=3\n", CMDINFO(CURRENT_SC));
1900 break;
1901 }
1902
1903 if (!HOSTDATA(shpnt)->synchronous)
1904 break;
1905
1906 printk(INFO_LEAD, CMDINFO(CURRENT_SC));
1907 spi_print_msg(&MSGI(0));
1908 printk("\n");
1909
1910 ticks = (MSGI(3) * 4 + 49) / 50;
1911
1912 if (syncneg) {
1913 /* negotiation in progress */
1914 if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) {
1915 ADDMSGO(MESSAGE_REJECT);
1916 printk(INFO_LEAD "received Synchronous Data Transfer Request invalid - rejected\n", CMDINFO(CURRENT_SC));
1917 break;
1918 }
1919
1920 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1921 } else if (ticks <= 9 && MSGI(4) >= 1) {
1922 ADDMSGO(EXTENDED_MESSAGE);
1923 ADDMSGO(3);
1924 ADDMSGO(EXTENDED_SDTR);
1925 if (ticks < 4) {
1926 ticks = 4;
1927 ADDMSGO(50);
1928 } else
1929 ADDMSGO(MSGI(3));
1930
1931 if (MSGI(4) > 8)
1932 MSGI(4) = 8;
1933
1934 ADDMSGO(MSGI(4));
1935
1936 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1937 } else {
1938 /* requested SDTR is too slow, do it asynchronously */
1939 printk(INFO_LEAD "Synchronous Data Transfer Request too slow - Rejecting\n", CMDINFO(CURRENT_SC));
1940 ADDMSGO(MESSAGE_REJECT);
1941 }
1942
1943 SYNCNEG=2; /* negotiation completed */
1944 SETRATE(SYNCRATE);
1945 }
1946 break;
1947
1948 case BUS_DEVICE_RESET:
1949 {
1950 int i;
1951
1952 for(i=0; i<8; i++) {
1953 HOSTDATA(shpnt)->syncrate[i]=0;
1954 HOSTDATA(shpnt)->syncneg[i]=0;
1955 }
1956
1957 }
1958 break;
1959
1960 case EXTENDED_MODIFY_DATA_POINTER:
1961 case EXTENDED_EXTENDED_IDENTIFY:
1962 case EXTENDED_WDTR:
1963 default:
1964 ADDMSGO(MESSAGE_REJECT);
1965 break;
1966 }
1967 break;
1968 }
1969
1970 MSGILEN=0;
1971 }
1972 }
1973
1974 static void msgi_end(struct Scsi_Host *shpnt)
1975 {
1976 if(MSGILEN>0)
1977 printk(WARN_LEAD "target left before message completed (%d)\n", CMDINFO(CURRENT_SC), MSGILEN);
1978
1979 if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE)) {
1980 DPRINTK(debug_msgi, DEBUG_LEAD "msgo pending\n", CMDINFO(CURRENT_SC));
1981 SETPORT(SCSISIG, P_MSGI | SIG_ATNO);
1982 }
1983 }
1984
1985 /*
1986 * message out phase
1987 *
1988 */
1989 static void msgo_init(struct Scsi_Host *shpnt)
1990 {
1991 if(MSGOLEN==0) {
1992 if((CURRENT_SC->SCp.phase & syncneg) && SYNCNEG==2 && SYNCRATE==0) {
1993 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1994 } else {
1995 printk(INFO_LEAD "unexpected MESSAGE OUT phase; rejecting\n", CMDINFO(CURRENT_SC));
1996 ADDMSGO(MESSAGE_REJECT);
1997 }
1998 }
1999
2000 #if defined(AHA152X_DEBUG)
2001 if(HOSTDATA(shpnt)->debug & debug_msgo) {
2002 int i;
2003
2004 printk(DEBUG_LEAD "messages( ", CMDINFO(CURRENT_SC));
2005 for (i=0; i<MSGOLEN; i+=spi_print_msg(&MSGO(i)), printk(" "))
2006 ;
2007 printk(")\n");
2008 }
2009 #endif
2010 }
2011
2012 /*
2013 * message out phase
2014 *
2015 */
2016 static void msgo_run(struct Scsi_Host *shpnt)
2017 {
2018 if(MSGO_I==MSGOLEN)
2019 DPRINTK(debug_msgo, DEBUG_LEAD "messages all sent (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO_I, MSGOLEN);
2020
2021 while(MSGO_I<MSGOLEN) {
2022 DPRINTK(debug_msgo, DEBUG_LEAD "message byte %02x (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO(MSGO_I), MSGO_I, MSGOLEN);
2023
2024 if(TESTLO(SSTAT0, SPIORDY)) {
2025 DPRINTK(debug_msgo, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
2026 return;
2027 }
2028
2029 if (MSGO_I==MSGOLEN-1) {
2030 /* Leave MESSAGE OUT after transfer */
2031 SETPORT(SSTAT1, CLRATNO);
2032 }
2033
2034
2035 if (MSGO(MSGO_I) & IDENTIFY_BASE)
2036 CURRENT_SC->SCp.phase |= identified;
2037
2038 if (MSGO(MSGO_I)==ABORT)
2039 CURRENT_SC->SCp.phase |= aborted;
2040
2041 if (MSGO(MSGO_I)==BUS_DEVICE_RESET)
2042 CURRENT_SC->SCp.phase |= resetted;
2043
2044 SETPORT(SCSIDAT, MSGO(MSGO_I++));
2045 }
2046 }
2047
2048 static void msgo_end(struct Scsi_Host *shpnt)
2049 {
2050 if(MSGO_I<MSGOLEN) {
2051 printk(ERR_LEAD "message sent incompletely (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO_I, MSGOLEN);
2052 if(SYNCNEG==1) {
2053 printk(INFO_LEAD "Synchronous Data Transfer Request was rejected\n", CMDINFO(CURRENT_SC));
2054 SYNCNEG=2;
2055 }
2056 }
2057
2058 MSGO_I = 0;
2059 MSGOLEN = 0;
2060 }
2061
2062 /*
2063 * command phase
2064 *
2065 */
2066 static void cmd_init(struct Scsi_Host *shpnt)
2067 {
2068 if (CURRENT_SC->SCp.sent_command) {
2069 printk(ERR_LEAD "command already sent\n", CMDINFO(CURRENT_SC));
2070 done(shpnt, DID_ERROR << 16);
2071 return;
2072 }
2073
2074 #if defined(AHA152X_DEBUG)
2075 if (HOSTDATA(shpnt)->debug & debug_cmd) {
2076 printk(DEBUG_LEAD "cmd_init: ", CMDINFO(CURRENT_SC));
2077 __scsi_print_command(CURRENT_SC->cmnd);
2078 }
2079 #endif
2080
2081 CMD_I=0;
2082 }
2083
2084 /*
2085 * command phase
2086 *
2087 */
2088 static void cmd_run(struct Scsi_Host *shpnt)
2089 {
2090 if(CMD_I==CURRENT_SC->cmd_len) {
2091 DPRINTK(debug_cmd, DEBUG_LEAD "command already completely sent (%d/%d)", CMDINFO(CURRENT_SC), CMD_I, CURRENT_SC->cmd_len);
2092 disp_ports(shpnt);
2093 }
2094
2095 while(CMD_I<CURRENT_SC->cmd_len) {
2096 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);
2097
2098 if(TESTLO(SSTAT0, SPIORDY)) {
2099 DPRINTK(debug_cmd, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
2100 return;
2101 }
2102
2103 SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]);
2104 }
2105 }
2106
2107 static void cmd_end(struct Scsi_Host *shpnt)
2108 {
2109 if(CMD_I<CURRENT_SC->cmd_len)
2110 printk(ERR_LEAD "command sent incompletely (%d/%d)\n", CMDINFO(CURRENT_SC), CMD_I, CURRENT_SC->cmd_len);
2111 else
2112 CURRENT_SC->SCp.sent_command++;
2113 }
2114
2115 /*
2116 * status phase
2117 *
2118 */
2119 static void status_run(struct Scsi_Host *shpnt)
2120 {
2121 if(TESTLO(SSTAT0,SPIORDY)) {
2122 DPRINTK(debug_status, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
2123 return;
2124 }
2125
2126 CURRENT_SC->SCp.Status = GETPORT(SCSIDAT);
2127
2128 #if defined(AHA152X_DEBUG)
2129 if (HOSTDATA(shpnt)->debug & debug_status) {
2130 printk(DEBUG_LEAD "inbound status %02x ", CMDINFO(CURRENT_SC), CURRENT_SC->SCp.Status);
2131 scsi_print_status(CURRENT_SC->SCp.Status);
2132 printk("\n");
2133 }
2134 #endif
2135 }
2136
2137 /*
2138 * data in phase
2139 *
2140 */
2141 static void datai_init(struct Scsi_Host *shpnt)
2142 {
2143 SETPORT(DMACNTRL0, RSTFIFO);
2144 SETPORT(DMACNTRL0, RSTFIFO|ENDMA);
2145
2146 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2147 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
2148
2149 SETPORT(SIMODE0, 0);
2150 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE);
2151
2152 DATA_LEN=0;
2153 DPRINTK(debug_datai,
2154 DEBUG_LEAD "datai_init: request_bufflen=%d resid=%d\n",
2155 CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC),
2156 scsi_get_resid(CURRENT_SC));
2157 }
2158
2159 static void datai_run(struct Scsi_Host *shpnt)
2160 {
2161 unsigned long the_time;
2162 int fifodata, data_count;
2163
2164 /*
2165 * loop while the phase persists or the fifos are not empty
2166 *
2167 */
2168 while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) {
2169 /* FIXME: maybe this should be done by setting up
2170 * STCNT to trigger ENSWRAP interrupt, instead of
2171 * polling for DFIFOFULL
2172 */
2173 the_time=jiffies + 100*HZ;
2174 while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time))
2175 barrier();
2176
2177 if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) {
2178 printk(ERR_LEAD "datai timeout", CMDINFO(CURRENT_SC));
2179 disp_ports(shpnt);
2180 break;
2181 }
2182
2183 if(TESTHI(DMASTAT, DFIFOFULL)) {
2184 fifodata = 128;
2185 } else {
2186 the_time=jiffies + 100*HZ;
2187 while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time))
2188 barrier();
2189
2190 if(TESTLO(SSTAT2, SEMPTY)) {
2191 printk(ERR_LEAD "datai sempty timeout", CMDINFO(CURRENT_SC));
2192 disp_ports(shpnt);
2193 break;
2194 }
2195
2196 fifodata = GETPORT(FIFOSTAT);
2197 }
2198
2199 if(CURRENT_SC->SCp.this_residual>0) {
2200 while(fifodata>0 && CURRENT_SC->SCp.this_residual>0) {
2201 data_count = fifodata>CURRENT_SC->SCp.this_residual ?
2202 CURRENT_SC->SCp.this_residual :
2203 fifodata;
2204 fifodata -= data_count;
2205
2206 if(data_count & 1) {
2207 DPRINTK(debug_datai, DEBUG_LEAD "8bit\n", CMDINFO(CURRENT_SC));
2208 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2209 *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT);
2210 CURRENT_SC->SCp.this_residual--;
2211 DATA_LEN++;
2212 SETPORT(DMACNTRL0, ENDMA);
2213 }
2214
2215 if(data_count > 1) {
2216 DPRINTK(debug_datai, DEBUG_LEAD "16bit(%d)\n", CMDINFO(CURRENT_SC), data_count);
2217 data_count >>= 1;
2218 insw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2219 CURRENT_SC->SCp.ptr += 2 * data_count;
2220 CURRENT_SC->SCp.this_residual -= 2 * data_count;
2221 DATA_LEN += 2 * data_count;
2222 }
2223
2224 if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
2225 /* advance to next buffer */
2226 CURRENT_SC->SCp.buffers_residual--;
2227 CURRENT_SC->SCp.buffer++;
2228 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2229 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2230 }
2231 }
2232 } else if(fifodata>0) {
2233 printk(ERR_LEAD "no buffers left for %d(%d) bytes (data overrun!?)\n", CMDINFO(CURRENT_SC), fifodata, GETPORT(FIFOSTAT));
2234 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2235 while(fifodata>0) {
2236 int data;
2237 data=GETPORT(DATAPORT);
2238 DPRINTK(debug_datai, DEBUG_LEAD "data=%02x\n", CMDINFO(CURRENT_SC), data);
2239 fifodata--;
2240 DATA_LEN++;
2241 }
2242 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2243 }
2244 }
2245
2246 if(TESTLO(DMASTAT, INTSTAT) ||
2247 TESTLO(DMASTAT, DFIFOEMP) ||
2248 TESTLO(SSTAT2, SEMPTY) ||
2249 GETPORT(FIFOSTAT)>0) {
2250 /*
2251 * something went wrong, if there's something left in the fifos
2252 * or the phase didn't change
2253 */
2254 printk(ERR_LEAD "fifos should be empty and phase should have changed\n", CMDINFO(CURRENT_SC));
2255 disp_ports(shpnt);
2256 }
2257
2258 if(DATA_LEN!=GETSTCNT()) {
2259 printk(ERR_LEAD
2260 "manual transfer count differs from automatic (count=%d;stcnt=%d;diff=%d;fifostat=%d)",
2261 CMDINFO(CURRENT_SC), DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN, GETPORT(FIFOSTAT));
2262 disp_ports(shpnt);
2263 mdelay(10000);
2264 }
2265 }
2266
2267 static void datai_end(struct Scsi_Host *shpnt)
2268 {
2269 CMD_INC_RESID(CURRENT_SC, -GETSTCNT());
2270
2271 DPRINTK(debug_datai,
2272 DEBUG_LEAD "datai_end: request_bufflen=%d resid=%d stcnt=%d\n",
2273 CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC),
2274 scsi_get_resid(CURRENT_SC), GETSTCNT());
2275
2276 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2277 SETPORT(DMACNTRL0, 0);
2278 }
2279
2280 /*
2281 * data out phase
2282 *
2283 */
2284 static void datao_init(struct Scsi_Host *shpnt)
2285 {
2286 SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO);
2287 SETPORT(DMACNTRL0, WRITE_READ | ENDMA);
2288
2289 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2290 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
2291
2292 SETPORT(SIMODE0, 0);
2293 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE );
2294
2295 DATA_LEN = scsi_get_resid(CURRENT_SC);
2296
2297 DPRINTK(debug_datao,
2298 DEBUG_LEAD "datao_init: request_bufflen=%d; resid=%d\n",
2299 CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC),
2300 scsi_get_resid(CURRENT_SC));
2301 }
2302
2303 static void datao_run(struct Scsi_Host *shpnt)
2304 {
2305 unsigned long the_time;
2306 int data_count;
2307
2308 /* until phase changes or all data sent */
2309 while(TESTLO(DMASTAT, INTSTAT) && CURRENT_SC->SCp.this_residual>0) {
2310 data_count = 128;
2311 if(data_count > CURRENT_SC->SCp.this_residual)
2312 data_count=CURRENT_SC->SCp.this_residual;
2313
2314 if(TESTLO(DMASTAT, DFIFOEMP)) {
2315 printk(ERR_LEAD "datao fifo not empty (%d)", CMDINFO(CURRENT_SC), GETPORT(FIFOSTAT));
2316 disp_ports(shpnt);
2317 break;
2318 }
2319
2320 if(data_count & 1) {
2321 SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT);
2322 SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++);
2323 CURRENT_SC->SCp.this_residual--;
2324 CMD_INC_RESID(CURRENT_SC, -1);
2325 SETPORT(DMACNTRL0,WRITE_READ|ENDMA);
2326 }
2327
2328 if(data_count > 1) {
2329 data_count >>= 1;
2330 outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2331 CURRENT_SC->SCp.ptr += 2 * data_count;
2332 CURRENT_SC->SCp.this_residual -= 2 * data_count;
2333 CMD_INC_RESID(CURRENT_SC, -2 * data_count);
2334 }
2335
2336 if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
2337 /* advance to next buffer */
2338 CURRENT_SC->SCp.buffers_residual--;
2339 CURRENT_SC->SCp.buffer++;
2340 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2341 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2342 }
2343
2344 the_time=jiffies + 100*HZ;
2345 while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time))
2346 barrier();
2347
2348 if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) {
2349 printk(ERR_LEAD "dataout timeout", CMDINFO(CURRENT_SC));
2350 disp_ports(shpnt);
2351 break;
2352 }
2353 }
2354 }
2355
2356 static void datao_end(struct Scsi_Host *shpnt)
2357 {
2358 if(TESTLO(DMASTAT, DFIFOEMP)) {
2359 int data_count = (DATA_LEN - scsi_get_resid(CURRENT_SC)) -
2360 GETSTCNT();
2361
2362 DPRINTK(debug_datao, DEBUG_LEAD "datao: %d bytes to resend (%d written, %d transferred)\n",
2363 CMDINFO(CURRENT_SC),
2364 data_count,
2365 DATA_LEN - scsi_get_resid(CURRENT_SC),
2366 GETSTCNT());
2367
2368 CMD_INC_RESID(CURRENT_SC, data_count);
2369
2370 data_count -= CURRENT_SC->SCp.ptr -
2371 SG_ADDRESS(CURRENT_SC->SCp.buffer);
2372 while(data_count>0) {
2373 CURRENT_SC->SCp.buffer--;
2374 CURRENT_SC->SCp.buffers_residual++;
2375 data_count -= CURRENT_SC->SCp.buffer->length;
2376 }
2377 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) -
2378 data_count;
2379 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length +
2380 data_count;
2381 }
2382
2383 DPRINTK(debug_datao, DEBUG_LEAD "datao_end: request_bufflen=%d; resid=%d; stcnt=%d\n",
2384 CMDINFO(CURRENT_SC),
2385 scsi_bufflen(CURRENT_SC),
2386 scsi_get_resid(CURRENT_SC),
2387 GETSTCNT());
2388
2389 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
2390 SETPORT(SXFRCTL0, CH1);
2391
2392 SETPORT(DMACNTRL0, 0);
2393 }
2394
2395 /*
2396 * figure out what state we're in
2397 *
2398 */
2399 static int update_state(struct Scsi_Host *shpnt)
2400 {
2401 int dataphase=0;
2402 unsigned int stat0 = GETPORT(SSTAT0);
2403 unsigned int stat1 = GETPORT(SSTAT1);
2404
2405 PREVSTATE = STATE;
2406 STATE=unknown;
2407
2408 if(stat1 & SCSIRSTI) {
2409 STATE=rsti;
2410 SETPORT(SCSISEQ,0);
2411 SETPORT(SSTAT1,SCSIRSTI);
2412 } else if(stat0 & SELDI && PREVSTATE==busfree) {
2413 STATE=seldi;
2414 } else if(stat0 & SELDO && CURRENT_SC && (CURRENT_SC->SCp.phase & selecting)) {
2415 STATE=seldo;
2416 } else if(stat1 & SELTO) {
2417 STATE=selto;
2418 } else if(stat1 & BUSFREE) {
2419 STATE=busfree;
2420 SETPORT(SSTAT1,BUSFREE);
2421 } else if(stat1 & SCSIPERR) {
2422 STATE=parerr;
2423 SETPORT(SSTAT1,SCSIPERR);
2424 } else if(stat1 & REQINIT) {
2425 switch(GETPORT(SCSISIG) & P_MASK) {
2426 case P_MSGI: STATE=msgi; break;
2427 case P_MSGO: STATE=msgo; break;
2428 case P_DATAO: STATE=datao; break;
2429 case P_DATAI: STATE=datai; break;
2430 case P_STATUS: STATE=status; break;
2431 case P_CMD: STATE=cmd; break;
2432 }
2433 dataphase=1;
2434 }
2435
2436 if((stat0 & SELDI) && STATE!=seldi && !dataphase) {
2437 printk(INFO_LEAD "reselection missed?", CMDINFO(CURRENT_SC));
2438 disp_ports(shpnt);
2439 }
2440
2441 if(STATE!=PREVSTATE) {
2442 LASTSTATE=PREVSTATE;
2443 }
2444
2445 return dataphase;
2446 }
2447
2448 /*
2449 * handle parity error
2450 *
2451 * FIXME: in which phase?
2452 *
2453 */
2454 static void parerr_run(struct Scsi_Host *shpnt)
2455 {
2456 printk(ERR_LEAD "parity error\n", CMDINFO(CURRENT_SC));
2457 done(shpnt, DID_PARITY << 16);
2458 }
2459
2460 /*
2461 * handle reset in
2462 *
2463 */
2464 static void rsti_run(struct Scsi_Host *shpnt)
2465 {
2466 Scsi_Cmnd *ptr;
2467
2468 printk(KERN_NOTICE "aha152x%d: scsi reset in\n", HOSTNO);
2469
2470 ptr=DISCONNECTED_SC;
2471 while(ptr) {
2472 Scsi_Cmnd *next = SCNEXT(ptr);
2473
2474 if (!ptr->device->soft_reset) {
2475 remove_SC(&DISCONNECTED_SC, ptr);
2476
2477 kfree(ptr->host_scribble);
2478 ptr->host_scribble=NULL;
2479
2480 ptr->result = DID_RESET << 16;
2481 ptr->scsi_done(ptr);
2482 }
2483
2484 ptr = next;
2485 }
2486
2487 if(CURRENT_SC && !CURRENT_SC->device->soft_reset)
2488 done(shpnt, DID_RESET << 16 );
2489 }
2490
2491
2492 /*
2493 * bottom-half handler
2494 *
2495 */
2496 static void is_complete(struct Scsi_Host *shpnt)
2497 {
2498 int dataphase;
2499 unsigned long flags;
2500 int pending;
2501
2502 if(!shpnt)
2503 return;
2504
2505 DO_LOCK(flags);
2506
2507 if( HOSTDATA(shpnt)->service==0 ) {
2508 DO_UNLOCK(flags);
2509 return;
2510 }
2511
2512 HOSTDATA(shpnt)->service = 0;
2513
2514 if(HOSTDATA(shpnt)->in_intr) {
2515 DO_UNLOCK(flags);
2516 /* aha152x_error never returns.. */
2517 aha152x_error(shpnt, "bottom-half already running!?");
2518 }
2519 HOSTDATA(shpnt)->in_intr++;
2520
2521 /*
2522 * loop while there are interrupt conditions pending
2523 *
2524 */
2525 do {
2526 unsigned long start = jiffies;
2527 DO_UNLOCK(flags);
2528
2529 dataphase=update_state(shpnt);
2530
2531 DPRINTK(debug_phases, LEAD "start %s %s(%s)\n", CMDINFO(CURRENT_SC), states[STATE].name, states[PREVSTATE].name, states[LASTSTATE].name);
2532
2533 /*
2534 * end previous state
2535 *
2536 */
2537 if(PREVSTATE!=STATE && states[PREVSTATE].end)
2538 states[PREVSTATE].end(shpnt);
2539
2540 /*
2541 * disable SPIO mode if previous phase used it
2542 * and this one doesn't
2543 *
2544 */
2545 if(states[PREVSTATE].spio && !states[STATE].spio) {
2546 SETPORT(SXFRCTL0, CH1);
2547 SETPORT(DMACNTRL0, 0);
2548 if(CURRENT_SC)
2549 CURRENT_SC->SCp.phase &= ~spiordy;
2550 }
2551
2552 /*
2553 * accept current dataphase phase
2554 *
2555 */
2556 if(dataphase) {
2557 SETPORT(SSTAT0, REQINIT);
2558 SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK);
2559 SETPORT(SSTAT1, PHASECHG);
2560 }
2561
2562 /*
2563 * enable SPIO mode if previous didn't use it
2564 * and this one does
2565 *
2566 */
2567 if(!states[PREVSTATE].spio && states[STATE].spio) {
2568 SETPORT(DMACNTRL0, 0);
2569 SETPORT(SXFRCTL0, CH1|SPIOEN);
2570 if(CURRENT_SC)
2571 CURRENT_SC->SCp.phase |= spiordy;
2572 }
2573
2574 /*
2575 * initialize for new state
2576 *
2577 */
2578 if(PREVSTATE!=STATE && states[STATE].init)
2579 states[STATE].init(shpnt);
2580
2581 /*
2582 * handle current state
2583 *
2584 */
2585 if(states[STATE].run)
2586 states[STATE].run(shpnt);
2587 else
2588 printk(ERR_LEAD "unexpected state (%x)\n", CMDINFO(CURRENT_SC), STATE);
2589
2590 /*
2591 * setup controller to interrupt on
2592 * the next expected condition and
2593 * loop if it's already there
2594 *
2595 */
2596 DO_LOCK(flags);
2597 pending=setup_expected_interrupts(shpnt);
2598 #if defined(AHA152X_STAT)
2599 HOSTDATA(shpnt)->count[STATE]++;
2600 if(PREVSTATE!=STATE)
2601 HOSTDATA(shpnt)->count_trans[STATE]++;
2602 HOSTDATA(shpnt)->time[STATE] += jiffies-start;
2603 #endif
2604
2605 DPRINTK(debug_phases, LEAD "end %s %s(%s)\n", CMDINFO(CURRENT_SC), states[STATE].name, states[PREVSTATE].name, states[LASTSTATE].name);
2606 } while(pending);
2607
2608 /*
2609 * enable interrupts and leave bottom-half
2610 *
2611 */
2612 HOSTDATA(shpnt)->in_intr--;
2613 SETBITS(DMACNTRL0, INTEN);
2614 DO_UNLOCK(flags);
2615 }
2616
2617
2618 /*
2619 * Dump the current driver status and panic
2620 */
2621 static void aha152x_error(struct Scsi_Host *shpnt, char *msg)
2622 {
2623 printk(KERN_EMERG "\naha152x%d: %s\n", HOSTNO, msg);
2624 show_queues(shpnt);
2625 panic("aha152x panic\n");
2626 }
2627
2628 /*
2629 * Display registers of AIC-6260
2630 */
2631 static void disp_ports(struct Scsi_Host *shpnt)
2632 {
2633 #if defined(AHA152X_DEBUG)
2634 int s;
2635
2636 printk("\n%s: %s(%s) ",
2637 CURRENT_SC ? "busy" : "waiting",
2638 states[STATE].name,
2639 states[PREVSTATE].name);
2640
2641 s = GETPORT(SCSISEQ);
2642 printk("SCSISEQ( ");
2643 if (s & TEMODEO)
2644 printk("TARGET MODE ");
2645 if (s & ENSELO)
2646 printk("SELO ");
2647 if (s & ENSELI)
2648 printk("SELI ");
2649 if (s & ENRESELI)
2650 printk("RESELI ");
2651 if (s & ENAUTOATNO)
2652 printk("AUTOATNO ");
2653 if (s & ENAUTOATNI)
2654 printk("AUTOATNI ");
2655 if (s & ENAUTOATNP)
2656 printk("AUTOATNP ");
2657 if (s & SCSIRSTO)
2658 printk("SCSIRSTO ");
2659 printk(");");
2660
2661 printk(" SCSISIG(");
2662 s = GETPORT(SCSISIG);
2663 switch (s & P_MASK) {
2664 case P_DATAO:
2665 printk("DATA OUT");
2666 break;
2667 case P_DATAI:
2668 printk("DATA IN");
2669 break;
2670 case P_CMD:
2671 printk("COMMAND");
2672 break;
2673 case P_STATUS:
2674 printk("STATUS");
2675 break;
2676 case P_MSGO:
2677 printk("MESSAGE OUT");
2678 break;
2679 case P_MSGI:
2680 printk("MESSAGE IN");
2681 break;
2682 default:
2683 printk("*invalid*");
2684 break;
2685 }
2686
2687 printk("); ");
2688
2689 printk("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");
2690
2691 printk("SSTAT( ");
2692 s = GETPORT(SSTAT0);
2693 if (s & TARGET)
2694 printk("TARGET ");
2695 if (s & SELDO)
2696 printk("SELDO ");
2697 if (s & SELDI)
2698 printk("SELDI ");
2699 if (s & SELINGO)
2700 printk("SELINGO ");
2701 if (s & SWRAP)
2702 printk("SWRAP ");
2703 if (s & SDONE)
2704 printk("SDONE ");
2705 if (s & SPIORDY)
2706 printk("SPIORDY ");
2707 if (s & DMADONE)
2708 printk("DMADONE ");
2709
2710 s = GETPORT(SSTAT1);
2711 if (s & SELTO)
2712 printk("SELTO ");
2713 if (s & ATNTARG)
2714 printk("ATNTARG ");
2715 if (s & SCSIRSTI)
2716 printk("SCSIRSTI ");
2717 if (s & PHASEMIS)
2718 printk("PHASEMIS ");
2719 if (s & BUSFREE)
2720 printk("BUSFREE ");
2721 if (s & SCSIPERR)
2722 printk("SCSIPERR ");
2723 if (s & PHASECHG)
2724 printk("PHASECHG ");
2725 if (s & REQINIT)
2726 printk("REQINIT ");
2727 printk("); ");
2728
2729
2730 printk("SSTAT( ");
2731
2732 s = GETPORT(SSTAT0) & GETPORT(SIMODE0);
2733
2734 if (s & TARGET)
2735 printk("TARGET ");
2736 if (s & SELDO)
2737 printk("SELDO ");
2738 if (s & SELDI)
2739 printk("SELDI ");
2740 if (s & SELINGO)
2741 printk("SELINGO ");
2742 if (s & SWRAP)
2743 printk("SWRAP ");
2744 if (s & SDONE)
2745 printk("SDONE ");
2746 if (s & SPIORDY)
2747 printk("SPIORDY ");
2748 if (s & DMADONE)
2749 printk("DMADONE ");
2750
2751 s = GETPORT(SSTAT1) & GETPORT(SIMODE1);
2752
2753 if (s & SELTO)
2754 printk("SELTO ");
2755 if (s & ATNTARG)
2756 printk("ATNTARG ");
2757 if (s & SCSIRSTI)
2758 printk("SCSIRSTI ");
2759 if (s & PHASEMIS)
2760 printk("PHASEMIS ");
2761 if (s & BUSFREE)
2762 printk("BUSFREE ");
2763 if (s & SCSIPERR)
2764 printk("SCSIPERR ");
2765 if (s & PHASECHG)
2766 printk("PHASECHG ");
2767 if (s & REQINIT)
2768 printk("REQINIT ");
2769 printk("); ");
2770
2771 printk("SXFRCTL0( ");
2772
2773 s = GETPORT(SXFRCTL0);
2774 if (s & SCSIEN)
2775 printk("SCSIEN ");
2776 if (s & DMAEN)
2777 printk("DMAEN ");
2778 if (s & CH1)
2779 printk("CH1 ");
2780 if (s & CLRSTCNT)
2781 printk("CLRSTCNT ");
2782 if (s & SPIOEN)
2783 printk("SPIOEN ");
2784 if (s & CLRCH1)
2785 printk("CLRCH1 ");
2786 printk("); ");
2787
2788 printk("SIGNAL( ");
2789
2790 s = GETPORT(SCSISIG);
2791 if (s & SIG_ATNI)
2792 printk("ATNI ");
2793 if (s & SIG_SELI)
2794 printk("SELI ");
2795 if (s & SIG_BSYI)
2796 printk("BSYI ");
2797 if (s & SIG_REQI)
2798 printk("REQI ");
2799 if (s & SIG_ACKI)
2800 printk("ACKI ");
2801 printk("); ");
2802
2803 printk("SELID (%02x), ", GETPORT(SELID));
2804
2805 printk("STCNT (%d), ", GETSTCNT());
2806
2807 printk("SSTAT2( ");
2808
2809 s = GETPORT(SSTAT2);
2810 if (s & SOFFSET)
2811 printk("SOFFSET ");
2812 if (s & SEMPTY)
2813 printk("SEMPTY ");
2814 if (s & SFULL)
2815 printk("SFULL ");
2816 printk("); SFCNT (%d); ", s & (SFULL | SFCNT));
2817
2818 s = GETPORT(SSTAT3);
2819 printk("SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);
2820
2821 printk("SSTAT4( ");
2822 s = GETPORT(SSTAT4);
2823 if (s & SYNCERR)
2824 printk("SYNCERR ");
2825 if (s & FWERR)
2826 printk("FWERR ");
2827 if (s & FRERR)
2828 printk("FRERR ");
2829 printk("); ");
2830
2831 printk("DMACNTRL0( ");
2832 s = GETPORT(DMACNTRL0);
2833 printk("%s ", s & _8BIT ? "8BIT" : "16BIT");
2834 printk("%s ", s & DMA ? "DMA" : "PIO");
2835 printk("%s ", s & WRITE_READ ? "WRITE" : "READ");
2836 if (s & ENDMA)
2837 printk("ENDMA ");
2838 if (s & INTEN)
2839 printk("INTEN ");
2840 if (s & RSTFIFO)
2841 printk("RSTFIFO ");
2842 if (s & SWINT)
2843 printk("SWINT ");
2844 printk("); ");
2845
2846 printk("DMASTAT( ");
2847 s = GETPORT(DMASTAT);
2848 if (s & ATDONE)
2849 printk("ATDONE ");
2850 if (s & WORDRDY)
2851 printk("WORDRDY ");
2852 if (s & DFIFOFULL)
2853 printk("DFIFOFULL ");
2854 if (s & DFIFOEMP)
2855 printk("DFIFOEMP ");
2856 printk(")\n");
2857 #endif
2858 }
2859
2860 /*
2861 * display enabled interrupts
2862 */
2863 static void disp_enintr(struct Scsi_Host *shpnt)
2864 {
2865 int s;
2866
2867 printk(KERN_DEBUG "enabled interrupts ( ");
2868
2869 s = GETPORT(SIMODE0);
2870 if (s & ENSELDO)
2871 printk("ENSELDO ");
2872 if (s & ENSELDI)
2873 printk("ENSELDI ");
2874 if (s & ENSELINGO)
2875 printk("ENSELINGO ");
2876 if (s & ENSWRAP)
2877 printk("ENSWRAP ");
2878 if (s & ENSDONE)
2879 printk("ENSDONE ");
2880 if (s & ENSPIORDY)
2881 printk("ENSPIORDY ");
2882 if (s & ENDMADONE)
2883 printk("ENDMADONE ");
2884
2885 s = GETPORT(SIMODE1);
2886 if (s & ENSELTIMO)
2887 printk("ENSELTIMO ");
2888 if (s & ENATNTARG)
2889 printk("ENATNTARG ");
2890 if (s & ENPHASEMIS)
2891 printk("ENPHASEMIS ");
2892 if (s & ENBUSFREE)
2893 printk("ENBUSFREE ");
2894 if (s & ENSCSIPERR)
2895 printk("ENSCSIPERR ");
2896 if (s & ENPHASECHG)
2897 printk("ENPHASECHG ");
2898 if (s & ENREQINIT)
2899 printk("ENREQINIT ");
2900 printk(")\n");
2901 }
2902
2903 /*
2904 * Show the command data of a command
2905 */
2906 static void show_command(Scsi_Cmnd *ptr)
2907 {
2908 scmd_printk(KERN_DEBUG, ptr, "%p: cmnd=(", ptr);
2909
2910 __scsi_print_command(ptr->cmnd);
2911
2912 printk(KERN_DEBUG "); request_bufflen=%d; resid=%d; phase |",
2913 scsi_bufflen(ptr), scsi_get_resid(ptr));
2914
2915 if (ptr->SCp.phase & not_issued)
2916 printk("not issued|");
2917 if (ptr->SCp.phase & selecting)
2918 printk("selecting|");
2919 if (ptr->SCp.phase & identified)
2920 printk("identified|");
2921 if (ptr->SCp.phase & disconnected)
2922 printk("disconnected|");
2923 if (ptr->SCp.phase & completed)
2924 printk("completed|");
2925 if (ptr->SCp.phase & spiordy)
2926 printk("spiordy|");
2927 if (ptr->SCp.phase & syncneg)
2928 printk("syncneg|");
2929 if (ptr->SCp.phase & aborted)
2930 printk("aborted|");
2931 if (ptr->SCp.phase & resetted)
2932 printk("resetted|");
2933 if( SCDATA(ptr) ) {
2934 printk("; next=0x%p\n", SCNEXT(ptr));
2935 } else {
2936 printk("; next=(host scribble NULL)\n");
2937 }
2938 }
2939
2940 /*
2941 * Dump the queued data
2942 */
2943 static void show_queues(struct Scsi_Host *shpnt)
2944 {
2945 Scsi_Cmnd *ptr;
2946 unsigned long flags;
2947
2948 DO_LOCK(flags);
2949 printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n");
2950 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
2951 show_command(ptr);
2952 DO_UNLOCK(flags);
2953
2954 printk(KERN_DEBUG "current_SC:\n");
2955 if (CURRENT_SC)
2956 show_command(CURRENT_SC);
2957 else
2958 printk(KERN_DEBUG "none\n");
2959
2960 printk(KERN_DEBUG "disconnected_SC:\n");
2961 for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL)
2962 show_command(ptr);
2963
2964 disp_ports(shpnt);
2965 disp_enintr(shpnt);
2966 }
2967
2968 #undef SPRINTF
2969 #define SPRINTF(args...) pos += sprintf(pos, ## args)
2970
2971 static int get_command(char *pos, Scsi_Cmnd * ptr)
2972 {
2973 char *start = pos;
2974 int i;
2975
2976 SPRINTF("0x%08x: target=%d; lun=%d; cmnd=( ",
2977 (unsigned int) ptr, ptr->device->id, ptr->device->lun);
2978
2979 for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++)
2980 SPRINTF("0x%02x ", ptr->cmnd[i]);
2981
2982 SPRINTF("); resid=%d; residual=%d; buffers=%d; phase |",
2983 scsi_get_resid(ptr), ptr->SCp.this_residual,
2984 ptr->SCp.buffers_residual);
2985
2986 if (ptr->SCp.phase & not_issued)
2987 SPRINTF("not issued|");
2988 if (ptr->SCp.phase & selecting)
2989 SPRINTF("selecting|");
2990 if (ptr->SCp.phase & disconnected)
2991 SPRINTF("disconnected|");
2992 if (ptr->SCp.phase & aborted)
2993 SPRINTF("aborted|");
2994 if (ptr->SCp.phase & identified)
2995 SPRINTF("identified|");
2996 if (ptr->SCp.phase & completed)
2997 SPRINTF("completed|");
2998 if (ptr->SCp.phase & spiordy)
2999 SPRINTF("spiordy|");
3000 if (ptr->SCp.phase & syncneg)
3001 SPRINTF("syncneg|");
3002 SPRINTF("; next=0x%p\n", SCNEXT(ptr));
3003
3004 return (pos - start);
3005 }
3006
3007 static int get_ports(struct Scsi_Host *shpnt, char *pos)
3008 {
3009 char *start = pos;
3010 int s;
3011
3012 SPRINTF("\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name);
3013
3014 s = GETPORT(SCSISEQ);
3015 SPRINTF("SCSISEQ( ");
3016 if (s & TEMODEO)
3017 SPRINTF("TARGET MODE ");
3018 if (s & ENSELO)
3019 SPRINTF("SELO ");
3020 if (s & ENSELI)
3021 SPRINTF("SELI ");
3022 if (s & ENRESELI)
3023 SPRINTF("RESELI ");
3024 if (s & ENAUTOATNO)
3025 SPRINTF("AUTOATNO ");
3026 if (s & ENAUTOATNI)
3027 SPRINTF("AUTOATNI ");
3028 if (s & ENAUTOATNP)
3029 SPRINTF("AUTOATNP ");
3030 if (s & SCSIRSTO)
3031 SPRINTF("SCSIRSTO ");
3032 SPRINTF(");");
3033
3034 SPRINTF(" SCSISIG(");
3035 s = GETPORT(SCSISIG);
3036 switch (s & P_MASK) {
3037 case P_DATAO:
3038 SPRINTF("DATA OUT");
3039 break;
3040 case P_DATAI:
3041 SPRINTF("DATA IN");
3042 break;
3043 case P_CMD:
3044 SPRINTF("COMMAND");
3045 break;
3046 case P_STATUS:
3047 SPRINTF("STATUS");
3048 break;
3049 case P_MSGO:
3050 SPRINTF("MESSAGE OUT");
3051 break;
3052 case P_MSGI:
3053 SPRINTF("MESSAGE IN");
3054 break;
3055 default:
3056 SPRINTF("*invalid*");
3057 break;
3058 }
3059
3060 SPRINTF("); ");
3061
3062 SPRINTF("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");
3063
3064 SPRINTF("SSTAT( ");
3065 s = GETPORT(SSTAT0);
3066 if (s & TARGET)
3067 SPRINTF("TARGET ");
3068 if (s & SELDO)
3069 SPRINTF("SELDO ");
3070 if (s & SELDI)
3071 SPRINTF("SELDI ");
3072 if (s & SELINGO)
3073 SPRINTF("SELINGO ");
3074 if (s & SWRAP)
3075 SPRINTF("SWRAP ");
3076 if (s & SDONE)
3077 SPRINTF("SDONE ");
3078 if (s & SPIORDY)
3079 SPRINTF("SPIORDY ");
3080 if (s & DMADONE)
3081 SPRINTF("DMADONE ");
3082
3083 s = GETPORT(SSTAT1);
3084 if (s & SELTO)
3085 SPRINTF("SELTO ");
3086 if (s & ATNTARG)
3087 SPRINTF("ATNTARG ");
3088 if (s & SCSIRSTI)
3089 SPRINTF("SCSIRSTI ");
3090 if (s & PHASEMIS)
3091 SPRINTF("PHASEMIS ");
3092 if (s & BUSFREE)
3093 SPRINTF("BUSFREE ");
3094 if (s & SCSIPERR)
3095 SPRINTF("SCSIPERR ");
3096 if (s & PHASECHG)
3097 SPRINTF("PHASECHG ");
3098 if (s & REQINIT)
3099 SPRINTF("REQINIT ");
3100 SPRINTF("); ");
3101
3102
3103 SPRINTF("SSTAT( ");
3104
3105 s = GETPORT(SSTAT0) & GETPORT(SIMODE0);
3106
3107 if (s & TARGET)
3108 SPRINTF("TARGET ");
3109 if (s & SELDO)
3110 SPRINTF("SELDO ");
3111 if (s & SELDI)
3112 SPRINTF("SELDI ");
3113 if (s & SELINGO)
3114 SPRINTF("SELINGO ");
3115 if (s & SWRAP)
3116 SPRINTF("SWRAP ");
3117 if (s & SDONE)
3118 SPRINTF("SDONE ");
3119 if (s & SPIORDY)
3120 SPRINTF("SPIORDY ");
3121 if (s & DMADONE)
3122 SPRINTF("DMADONE ");
3123
3124 s = GETPORT(SSTAT1) & GETPORT(SIMODE1);
3125
3126 if (s & SELTO)
3127 SPRINTF("SELTO ");
3128 if (s & ATNTARG)
3129 SPRINTF("ATNTARG ");
3130 if (s & SCSIRSTI)
3131 SPRINTF("SCSIRSTI ");
3132 if (s & PHASEMIS)
3133 SPRINTF("PHASEMIS ");
3134 if (s & BUSFREE)
3135 SPRINTF("BUSFREE ");
3136 if (s & SCSIPERR)
3137 SPRINTF("SCSIPERR ");
3138 if (s & PHASECHG)
3139 SPRINTF("PHASECHG ");
3140 if (s & REQINIT)
3141 SPRINTF("REQINIT ");
3142 SPRINTF("); ");
3143
3144 SPRINTF("SXFRCTL0( ");
3145
3146 s = GETPORT(SXFRCTL0);
3147 if (s & SCSIEN)
3148 SPRINTF("SCSIEN ");
3149 if (s & DMAEN)
3150 SPRINTF("DMAEN ");
3151 if (s & CH1)
3152 SPRINTF("CH1 ");
3153 if (s & CLRSTCNT)
3154 SPRINTF("CLRSTCNT ");
3155 if (s & SPIOEN)
3156 SPRINTF("SPIOEN ");
3157 if (s & CLRCH1)
3158 SPRINTF("CLRCH1 ");
3159 SPRINTF("); ");
3160
3161 SPRINTF("SIGNAL( ");
3162
3163 s = GETPORT(SCSISIG);
3164 if (s & SIG_ATNI)
3165 SPRINTF("ATNI ");
3166 if (s & SIG_SELI)
3167 SPRINTF("SELI ");
3168 if (s & SIG_BSYI)
3169 SPRINTF("BSYI ");
3170 if (s & SIG_REQI)
3171 SPRINTF("REQI ");
3172 if (s & SIG_ACKI)
3173 SPRINTF("ACKI ");
3174 SPRINTF("); ");
3175
3176 SPRINTF("SELID(%02x), ", GETPORT(SELID));
3177
3178 SPRINTF("STCNT(%d), ", GETSTCNT());
3179
3180 SPRINTF("SSTAT2( ");
3181
3182 s = GETPORT(SSTAT2);
3183 if (s & SOFFSET)
3184 SPRINTF("SOFFSET ");
3185 if (s & SEMPTY)
3186 SPRINTF("SEMPTY ");
3187 if (s & SFULL)
3188 SPRINTF("SFULL ");
3189 SPRINTF("); SFCNT (%d); ", s & (SFULL | SFCNT));
3190
3191 s = GETPORT(SSTAT3);
3192 SPRINTF("SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);
3193
3194 SPRINTF("SSTAT4( ");
3195 s = GETPORT(SSTAT4);
3196 if (s & SYNCERR)
3197 SPRINTF("SYNCERR ");
3198 if (s & FWERR)
3199 SPRINTF("FWERR ");
3200 if (s & FRERR)
3201 SPRINTF("FRERR ");
3202 SPRINTF("); ");
3203
3204 SPRINTF("DMACNTRL0( ");
3205 s = GETPORT(DMACNTRL0);
3206 SPRINTF("%s ", s & _8BIT ? "8BIT" : "16BIT");
3207 SPRINTF("%s ", s & DMA ? "DMA" : "PIO");
3208 SPRINTF("%s ", s & WRITE_READ ? "WRITE" : "READ");
3209 if (s & ENDMA)
3210 SPRINTF("ENDMA ");
3211 if (s & INTEN)
3212 SPRINTF("INTEN ");
3213 if (s & RSTFIFO)
3214 SPRINTF("RSTFIFO ");
3215 if (s & SWINT)
3216 SPRINTF("SWINT ");
3217 SPRINTF("); ");
3218
3219 SPRINTF("DMASTAT( ");
3220 s = GETPORT(DMASTAT);
3221 if (s & ATDONE)
3222 SPRINTF("ATDONE ");
3223 if (s & WORDRDY)
3224 SPRINTF("WORDRDY ");
3225 if (s & DFIFOFULL)
3226 SPRINTF("DFIFOFULL ");
3227 if (s & DFIFOEMP)
3228 SPRINTF("DFIFOEMP ");
3229 SPRINTF(")\n");
3230
3231 SPRINTF("enabled interrupts( ");
3232
3233 s = GETPORT(SIMODE0);
3234 if (s & ENSELDO)
3235 SPRINTF("ENSELDO ");
3236 if (s & ENSELDI)
3237 SPRINTF("ENSELDI ");
3238 if (s & ENSELINGO)
3239 SPRINTF("ENSELINGO ");
3240 if (s & ENSWRAP)
3241 SPRINTF("ENSWRAP ");
3242 if (s & ENSDONE)
3243 SPRINTF("ENSDONE ");
3244 if (s & ENSPIORDY)
3245 SPRINTF("ENSPIORDY ");
3246 if (s & ENDMADONE)
3247 SPRINTF("ENDMADONE ");
3248
3249 s = GETPORT(SIMODE1);
3250 if (s & ENSELTIMO)
3251 SPRINTF("ENSELTIMO ");
3252 if (s & ENATNTARG)
3253 SPRINTF("ENATNTARG ");
3254 if (s & ENPHASEMIS)
3255 SPRINTF("ENPHASEMIS ");
3256 if (s & ENBUSFREE)
3257 SPRINTF("ENBUSFREE ");
3258 if (s & ENSCSIPERR)
3259 SPRINTF("ENSCSIPERR ");
3260 if (s & ENPHASECHG)
3261 SPRINTF("ENPHASECHG ");
3262 if (s & ENREQINIT)
3263 SPRINTF("ENREQINIT ");
3264 SPRINTF(")\n");
3265
3266 return (pos - start);
3267 }
3268
3269 static int aha152x_set_info(char *buffer, int length, struct Scsi_Host *shpnt)
3270 {
3271 if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0)
3272 return -EINVAL;
3273
3274 #if defined(AHA152X_DEBUG)
3275 if(length>14 && strncmp("debug ", buffer+8, 6)==0) {
3276 int debug = HOSTDATA(shpnt)->debug;
3277
3278 HOSTDATA(shpnt)->debug = simple_strtoul(buffer+14, NULL, 0);
3279
3280 printk(KERN_INFO "aha152x%d: debugging options set to 0x%04x (were 0x%04x)\n", HOSTNO, HOSTDATA(shpnt)->debug, debug);
3281 } else
3282 #endif
3283 #if defined(AHA152X_STAT)
3284 if(length>13 && strncmp("reset", buffer+8, 5)==0) {
3285 int i;
3286
3287 HOSTDATA(shpnt)->total_commands=0;
3288 HOSTDATA(shpnt)->disconnections=0;
3289 HOSTDATA(shpnt)->busfree_without_any_action=0;
3290 HOSTDATA(shpnt)->busfree_without_old_command=0;
3291 HOSTDATA(shpnt)->busfree_without_new_command=0;
3292 HOSTDATA(shpnt)->busfree_without_done_command=0;
3293 HOSTDATA(shpnt)->busfree_with_check_condition=0;
3294 for (i = idle; i<maxstate; i++) {
3295 HOSTDATA(shpnt)->count[i]=0;
3296 HOSTDATA(shpnt)->count_trans[i]=0;
3297 HOSTDATA(shpnt)->time[i]=0;
3298 }
3299
3300 printk(KERN_INFO "aha152x%d: stats reseted.\n", HOSTNO);
3301
3302 } else
3303 #endif
3304 {
3305 return -EINVAL;
3306 }
3307
3308
3309 return length;
3310 }
3311
3312 #undef SPRINTF
3313 #define SPRINTF(args...) \
3314 do { if(pos < buffer + length) pos += sprintf(pos, ## args); } while(0)
3315
3316 static int aha152x_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start,
3317 off_t offset, int length, int inout)
3318 {
3319 int i;
3320 char *pos = buffer;
3321 Scsi_Cmnd *ptr;
3322 unsigned long flags;
3323 int thislength;
3324
3325 DPRINTK(debug_procinfo,
3326 KERN_DEBUG "aha152x_proc_info: buffer=%p offset=%ld length=%d hostno=%d inout=%d\n",
3327 buffer, offset, length, shpnt->host_no, inout);
3328
3329
3330 if (inout)
3331 return aha152x_set_info(buffer, length, shpnt);
3332
3333 SPRINTF(AHA152X_REVID "\n");
3334
3335 SPRINTF("ioports 0x%04lx to 0x%04lx\n",
3336 shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1);
3337 SPRINTF("interrupt 0x%02x\n", shpnt->irq);
3338 SPRINTF("disconnection/reconnection %s\n",
3339 RECONNECT ? "enabled" : "disabled");
3340 SPRINTF("parity checking %s\n",
3341 PARITY ? "enabled" : "disabled");
3342 SPRINTF("synchronous transfers %s\n",
3343 SYNCHRONOUS ? "enabled" : "disabled");
3344 SPRINTF("%d commands currently queued\n", HOSTDATA(shpnt)->commands);
3345
3346 if(SYNCHRONOUS) {
3347 SPRINTF("synchronously operating targets (tick=50 ns):\n");
3348 for (i = 0; i < 8; i++)
3349 if (HOSTDATA(shpnt)->syncrate[i] & 0x7f)
3350 SPRINTF("target %d: period %dT/%dns; req/ack offset %d\n",
3351 i,
3352 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2),
3353 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50,
3354 HOSTDATA(shpnt)->syncrate[i] & 0x0f);
3355 }
3356 #if defined(AHA152X_DEBUG)
3357 #define PDEBUG(flags,txt) \
3358 if(HOSTDATA(shpnt)->debug & flags) SPRINTF("(%s) ", txt);
3359
3360 SPRINTF("enabled debugging options: ");
3361
3362 PDEBUG(debug_procinfo, "procinfo");
3363 PDEBUG(debug_queue, "queue");
3364 PDEBUG(debug_intr, "interrupt");
3365 PDEBUG(debug_selection, "selection");
3366 PDEBUG(debug_msgo, "message out");
3367 PDEBUG(debug_msgi, "message in");
3368 PDEBUG(debug_status, "status");
3369 PDEBUG(debug_cmd, "command");
3370 PDEBUG(debug_datai, "data in");
3371 PDEBUG(debug_datao, "data out");
3372 PDEBUG(debug_eh, "eh");
3373 PDEBUG(debug_locking, "locks");
3374 PDEBUG(debug_phases, "phases");
3375
3376 SPRINTF("\n");
3377 #endif
3378
3379 SPRINTF("\nqueue status:\n");
3380 DO_LOCK(flags);
3381 if (ISSUE_SC) {
3382 SPRINTF("not yet issued commands:\n");
3383 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
3384 pos += get_command(pos, ptr);
3385 } else
3386 SPRINTF("no not yet issued commands\n");
3387 DO_UNLOCK(flags);
3388
3389 if (CURRENT_SC) {
3390 SPRINTF("current command:\n");
3391 pos += get_command(pos, CURRENT_SC);
3392 } else
3393 SPRINTF("no current command\n");
3394
3395 if (DISCONNECTED_SC) {
3396 SPRINTF("disconnected commands:\n");
3397 for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr))
3398 pos += get_command(pos, ptr);
3399 } else
3400 SPRINTF("no disconnected commands\n");
3401
3402 pos += get_ports(shpnt, pos);
3403
3404 #if defined(AHA152X_STAT)
3405 SPRINTF("statistics:\n"
3406 "total commands: %d\n"
3407 "disconnections: %d\n"
3408 "busfree with check condition: %d\n"
3409 "busfree without old command: %d\n"
3410 "busfree without new command: %d\n"
3411 "busfree without done command: %d\n"
3412 "busfree without any action: %d\n"
3413 "state "
3414 "transitions "
3415 "count "
3416 "time\n",
3417 HOSTDATA(shpnt)->total_commands,
3418 HOSTDATA(shpnt)->disconnections,
3419 HOSTDATA(shpnt)->busfree_with_check_condition,
3420 HOSTDATA(shpnt)->busfree_without_old_command,
3421 HOSTDATA(shpnt)->busfree_without_new_command,
3422 HOSTDATA(shpnt)->busfree_without_done_command,
3423 HOSTDATA(shpnt)->busfree_without_any_action);
3424 for(i=0; i<maxstate; i++) {
3425 SPRINTF("%-10s %-12d %-12d %-12ld\n",
3426 states[i].name,
3427 HOSTDATA(shpnt)->count_trans[i],
3428 HOSTDATA(shpnt)->count[i],
3429 HOSTDATA(shpnt)->time[i]);
3430 }
3431 #endif
3432
3433 DPRINTK(debug_procinfo, KERN_DEBUG "aha152x_proc_info: pos=%p\n", pos);
3434
3435 thislength = pos - (buffer + offset);
3436 DPRINTK(debug_procinfo, KERN_DEBUG "aha152x_proc_info: length=%d thislength=%d\n", length, thislength);
3437
3438 if(thislength<0) {
3439 DPRINTK(debug_procinfo, KERN_DEBUG "aha152x_proc_info: output too short\n");
3440 *start = NULL;
3441 return 0;
3442 }
3443
3444 thislength = thislength<length ? thislength : length;
3445
3446 DPRINTK(debug_procinfo, KERN_DEBUG "aha152x_proc_info: return %d\n", thislength);
3447
3448 *start = buffer + offset;
3449 return thislength < length ? thislength : length;
3450 }
3451
3452 static int aha152x_adjust_queue(struct scsi_device *device)
3453 {
3454 blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH);
3455 return 0;
3456 }
3457
3458 static struct scsi_host_template aha152x_driver_template = {
3459 .module = THIS_MODULE,
3460 .name = AHA152X_REVID,
3461 .proc_name = "aha152x",
3462 .proc_info = aha152x_proc_info,
3463 .queuecommand = aha152x_queue,
3464 .eh_abort_handler = aha152x_abort,
3465 .eh_device_reset_handler = aha152x_device_reset,
3466 .eh_bus_reset_handler = aha152x_bus_reset,
3467 .eh_host_reset_handler = aha152x_host_reset,
3468 .bios_param = aha152x_biosparam,
3469 .can_queue = 1,
3470 .this_id = 7,
3471 .sg_tablesize = SG_ALL,
3472 .cmd_per_lun = 1,
3473 .use_clustering = DISABLE_CLUSTERING,
3474 .slave_alloc = aha152x_adjust_queue,
3475 };
3476
3477 #if !defined(PCMCIA)
3478 static int setup_count;
3479 static struct aha152x_setup setup[2];
3480
3481 /* possible i/o addresses for the AIC-6260; default first */
3482 static unsigned short ports[] = { 0x340, 0x140 };
3483
3484 #if !defined(SKIP_BIOSTEST)
3485 /* possible locations for the Adaptec BIOS; defaults first */
3486 static unsigned int addresses[] =
3487 {
3488 0xdc000, /* default first */
3489 0xc8000,
3490 0xcc000,
3491 0xd0000,
3492 0xd4000,
3493 0xd8000,
3494 0xe0000,
3495 0xeb800, /* VTech Platinum SMP */
3496 0xf0000,
3497 };
3498
3499 /* signatures for various AIC-6[23]60 based controllers.
3500 The point in detecting signatures is to avoid useless and maybe
3501 harmful probes on ports. I'm not sure that all listed boards pass
3502 auto-configuration. For those which fail the BIOS signature is
3503 obsolete, because user intervention to supply the configuration is
3504 needed anyway. May be an information whether or not the BIOS supports
3505 extended translation could be also useful here. */
3506 static struct signature {
3507 unsigned char *signature;
3508 int sig_offset;
3509 int sig_length;
3510 } signatures[] =
3511 {
3512 { "Adaptec AHA-1520 BIOS", 0x102e, 21 },
3513 /* Adaptec 152x */
3514 { "Adaptec AHA-1520B", 0x000b, 17 },
3515 /* Adaptec 152x rev B */
3516 { "Adaptec AHA-1520B", 0x0026, 17 },
3517 /* Iomega Jaz Jet ISA (AIC6370Q) */
3518 { "Adaptec ASW-B626 BIOS", 0x1029, 21 },
3519 /* on-board controller */
3520 { "Adaptec BIOS: ASW-B626", 0x000f, 22 },
3521 /* on-board controller */
3522 { "Adaptec ASW-B626 S2", 0x2e6c, 19 },
3523 /* on-board controller */
3524 { "Adaptec BIOS:AIC-6360", 0x000c, 21 },
3525 /* on-board controller */
3526 { "ScsiPro SP-360 BIOS", 0x2873, 19 },
3527 /* ScsiPro-Controller */
3528 { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 },
3529 /* Gigabyte Local-Bus-SCSI */
3530 { "Adaptec BIOS:AVA-282X", 0x000c, 21 },
3531 /* Adaptec 282x */
3532 { "Adaptec IBM Dock II SCSI", 0x2edd, 24 },
3533 /* IBM Thinkpad Dock II */
3534 { "Adaptec BIOS:AHA-1532P", 0x001c, 22 },
3535 /* IBM Thinkpad Dock II SCSI */
3536 { "DTC3520A Host Adapter BIOS", 0x318a, 26 },
3537 /* DTC 3520A ISA SCSI */
3538 };
3539 #endif /* !SKIP_BIOSTEST */
3540
3541 /*
3542 * Test, if port_base is valid.
3543 *
3544 */
3545 static int aha152x_porttest(int io_port)
3546 {
3547 int i;
3548
3549 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */
3550 for (i = 0; i < 16; i++)
3551 SETPORT(io_port + O_STACK, i);
3552
3553 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */
3554 for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++)
3555 ;
3556
3557 return (i == 16);
3558 }
3559
3560 static int tc1550_porttest(int io_port)
3561 {
3562 int i;
3563
3564 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */
3565 for (i = 0; i < 16; i++)
3566 SETPORT(io_port + O_STACK, i);
3567
3568 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */
3569 for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++)
3570 ;
3571
3572 return (i == 16);
3573 }
3574
3575
3576 static int checksetup(struct aha152x_setup *setup)
3577 {
3578 int i;
3579 for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++)
3580 ;
3581
3582 if (i == ARRAY_SIZE(ports))
3583 return 0;
3584
3585 if (!request_region(setup->io_port, IO_RANGE, "aha152x")) {
3586 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port);
3587 return 0;
3588 }
3589
3590 if( aha152x_porttest(setup->io_port) ) {
3591 setup->tc1550=0;
3592 } else if( tc1550_porttest(setup->io_port) ) {
3593 setup->tc1550=1;
3594 } else {
3595 release_region(setup->io_port, IO_RANGE);
3596 return 0;
3597 }
3598
3599 release_region(setup->io_port, IO_RANGE);
3600
3601 if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX))
3602 return 0;
3603
3604 if ((setup->scsiid < 0) || (setup->scsiid > 7))
3605 return 0;
3606
3607 if ((setup->reconnect < 0) || (setup->reconnect > 1))
3608 return 0;
3609
3610 if ((setup->parity < 0) || (setup->parity > 1))
3611 return 0;
3612
3613 if ((setup->synchronous < 0) || (setup->synchronous > 1))
3614 return 0;
3615
3616 if ((setup->ext_trans < 0) || (setup->ext_trans > 1))
3617 return 0;
3618
3619
3620 return 1;
3621 }
3622
3623
3624 static int __init aha152x_init(void)
3625 {
3626 int i, j, ok;
3627 #if defined(AUTOCONF)
3628 aha152x_config conf;
3629 #endif
3630 #ifdef __ISAPNP__
3631 struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL};
3632 #endif
3633
3634 if ( setup_count ) {
3635 printk(KERN_INFO "aha152x: processing commandline: ");
3636
3637 for (i = 0; i<setup_count; i++) {
3638 if (!checksetup(&setup[i])) {
3639 printk(KERN_ERR "\naha152x: %s\n", setup[i].conf);
3640 printk(KERN_ERR "aha152x: invalid line\n");
3641 }
3642 }
3643 printk("ok\n");
3644 }
3645
3646 #if defined(SETUP0)
3647 if (setup_count < ARRAY_SIZE(setup)) {
3648 struct aha152x_setup override = SETUP0;
3649
3650 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3651 if (!checksetup(&override)) {
3652 printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3653 override.io_port,
3654 override.irq,
3655 override.scsiid,
3656 override.reconnect,
3657 override.parity,
3658 override.synchronous,
3659 override.delay,
3660 override.ext_trans);
3661 } else
3662 setup[setup_count++] = override;
3663 }
3664 }
3665 #endif
3666
3667 #if defined(SETUP1)
3668 if (setup_count < ARRAY_SIZE(setup)) {
3669 struct aha152x_setup override = SETUP1;
3670
3671 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3672 if (!checksetup(&override)) {
3673 printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3674 override.io_port,
3675 override.irq,
3676 override.scsiid,
3677 override.reconnect,
3678 override.parity,
3679 override.synchronous,
3680 override.delay,
3681 override.ext_trans);
3682 } else
3683 setup[setup_count++] = override;
3684 }
3685 }
3686 #endif
3687
3688 #if defined(MODULE)
3689 if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) {
3690 if(aha152x[0]!=0) {
3691 setup[setup_count].conf = "";
3692 setup[setup_count].io_port = aha152x[0];
3693 setup[setup_count].irq = aha152x[1];
3694 setup[setup_count].scsiid = aha152x[2];
3695 setup[setup_count].reconnect = aha152x[3];
3696 setup[setup_count].parity = aha152x[4];
3697 setup[setup_count].synchronous = aha152x[5];
3698 setup[setup_count].delay = aha152x[6];
3699 setup[setup_count].ext_trans = aha152x[7];
3700 #if defined(AHA152X_DEBUG)
3701 setup[setup_count].debug = aha152x[8];
3702 #endif
3703 } else if(io[0]!=0 || irq[0]!=0) {
3704 if(io[0]!=0) setup[setup_count].io_port = io[0];
3705 if(irq[0]!=0) setup[setup_count].irq = irq[0];
3706
3707 setup[setup_count].scsiid = scsiid[0];
3708 setup[setup_count].reconnect = reconnect[0];
3709 setup[setup_count].parity = parity[0];
3710 setup[setup_count].synchronous = sync[0];
3711 setup[setup_count].delay = delay[0];
3712 setup[setup_count].ext_trans = exttrans[0];
3713 #if defined(AHA152X_DEBUG)
3714 setup[setup_count].debug = debug[0];
3715 #endif
3716 }
3717
3718 if (checksetup(&setup[setup_count]))
3719 setup_count++;
3720 else
3721 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",
3722 setup[setup_count].io_port,
3723 setup[setup_count].irq,
3724 setup[setup_count].scsiid,
3725 setup[setup_count].reconnect,
3726 setup[setup_count].parity,
3727 setup[setup_count].synchronous,
3728 setup[setup_count].delay,
3729 setup[setup_count].ext_trans);
3730 }
3731
3732 if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) {
3733 if(aha152x1[0]!=0) {
3734 setup[setup_count].conf = "";
3735 setup[setup_count].io_port = aha152x1[0];
3736 setup[setup_count].irq = aha152x1[1];
3737 setup[setup_count].scsiid = aha152x1[2];
3738 setup[setup_count].reconnect = aha152x1[3];
3739 setup[setup_count].parity = aha152x1[4];
3740 setup[setup_count].synchronous = aha152x1[5];
3741 setup[setup_count].delay = aha152x1[6];
3742 setup[setup_count].ext_trans = aha152x1[7];
3743 #if defined(AHA152X_DEBUG)
3744 setup[setup_count].debug = aha152x1[8];
3745 #endif
3746 } else if(io[1]!=0 || irq[1]!=0) {
3747 if(io[1]!=0) setup[setup_count].io_port = io[1];
3748 if(irq[1]!=0) setup[setup_count].irq = irq[1];
3749
3750 setup[setup_count].scsiid = scsiid[1];
3751 setup[setup_count].reconnect = reconnect[1];
3752 setup[setup_count].parity = parity[1];
3753 setup[setup_count].synchronous = sync[1];
3754 setup[setup_count].delay = delay[1];
3755 setup[setup_count].ext_trans = exttrans[1];
3756 #if defined(AHA152X_DEBUG)
3757 setup[setup_count].debug = debug[1];
3758 #endif
3759 }
3760 if (checksetup(&setup[setup_count]))
3761 setup_count++;
3762 else
3763 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",
3764 setup[setup_count].io_port,
3765 setup[setup_count].irq,
3766 setup[setup_count].scsiid,
3767 setup[setup_count].reconnect,
3768 setup[setup_count].parity,
3769 setup[setup_count].synchronous,
3770 setup[setup_count].delay,
3771 setup[setup_count].ext_trans);
3772 }
3773 #endif
3774
3775 #ifdef __ISAPNP__
3776 for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) {
3777 while ( setup_count<ARRAY_SIZE(setup) &&
3778 (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) {
3779 if (pnp_device_attach(dev) < 0)
3780 continue;
3781
3782 if (pnp_activate_dev(dev) < 0) {
3783 pnp_device_detach(dev);
3784 continue;
3785 }
3786
3787 if (!pnp_port_valid(dev, 0)) {
3788 pnp_device_detach(dev);
3789 continue;
3790 }
3791
3792 if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) {
3793 pnp_device_detach(dev);
3794 continue;
3795 }
3796
3797 setup[setup_count].io_port = pnp_port_start(dev, 0);
3798 setup[setup_count].irq = pnp_irq(dev, 0);
3799 setup[setup_count].scsiid = 7;
3800 setup[setup_count].reconnect = 1;
3801 setup[setup_count].parity = 1;
3802 setup[setup_count].synchronous = 1;
3803 setup[setup_count].delay = DELAY_DEFAULT;
3804 setup[setup_count].ext_trans = 0;
3805 #if defined(AHA152X_DEBUG)
3806 setup[setup_count].debug = DEBUG_DEFAULT;
3807 #endif
3808 #if defined(__ISAPNP__)
3809 pnpdev[setup_count] = dev;
3810 #endif
3811 printk (KERN_INFO
3812 "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n",
3813 setup[setup_count].io_port, setup[setup_count].irq);
3814 setup_count++;
3815 }
3816 }
3817 #endif
3818
3819 #if defined(AUTOCONF)
3820 if (setup_count<ARRAY_SIZE(setup)) {
3821 #if !defined(SKIP_BIOSTEST)
3822 ok = 0;
3823 for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) {
3824 void __iomem *p = ioremap(addresses[i], 0x4000);
3825 if (!p)
3826 continue;
3827 for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++)
3828 ok = check_signature(p + signatures[j].sig_offset,
3829 signatures[j].signature, signatures[j].sig_length);
3830 iounmap(p);
3831 }
3832 if (!ok && setup_count == 0)
3833 return -ENODEV;
3834
3835 printk(KERN_INFO "aha152x: BIOS test: passed, ");
3836 #else
3837 printk(KERN_INFO "aha152x: ");
3838 #endif /* !SKIP_BIOSTEST */
3839
3840 ok = 0;
3841 for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) {
3842 if ((setup_count == 1) && (setup[0].io_port == ports[i]))
3843 continue;
3844
3845 if (!request_region(ports[i], IO_RANGE, "aha152x")) {
3846 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]);
3847 continue;
3848 }
3849
3850 if (aha152x_porttest(ports[i])) {
3851 setup[setup_count].tc1550 = 0;
3852
3853 conf.cf_port =
3854 (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB);
3855 } else if (tc1550_porttest(ports[i])) {
3856 setup[setup_count].tc1550 = 1;
3857
3858 conf.cf_port =
3859 (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB);
3860 } else {
3861 release_region(ports[i], IO_RANGE);
3862 continue;
3863 }
3864
3865 release_region(ports[i], IO_RANGE);
3866
3867 ok++;
3868 setup[setup_count].io_port = ports[i];
3869 setup[setup_count].irq = IRQ_MIN + conf.cf_irq;
3870 setup[setup_count].scsiid = conf.cf_id;
3871 setup[setup_count].reconnect = conf.cf_tardisc;
3872 setup[setup_count].parity = !conf.cf_parity;
3873 setup[setup_count].synchronous = conf.cf_syncneg;
3874 setup[setup_count].delay = DELAY_DEFAULT;
3875 setup[setup_count].ext_trans = 0;
3876 #if defined(AHA152X_DEBUG)
3877 setup[setup_count].debug = DEBUG_DEFAULT;
3878 #endif
3879 setup_count++;
3880
3881 }
3882
3883 if (ok)
3884 printk("auto configuration: ok, ");
3885 }
3886 #endif
3887
3888 printk("%d controller(s) configured\n", setup_count);
3889
3890 for (i=0; i<setup_count; i++) {
3891 if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) {
3892 struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]);
3893
3894 if( !shpnt ) {
3895 release_region(setup[i].io_port, IO_RANGE);
3896 #if defined(__ISAPNP__)
3897 } else if( pnpdev[i] ) {
3898 HOSTDATA(shpnt)->pnpdev=pnpdev[i];
3899 pnpdev[i]=NULL;
3900 #endif
3901 }
3902 } else {
3903 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port);
3904 }
3905
3906 #if defined(__ISAPNP__)
3907 if( pnpdev[i] )
3908 pnp_device_detach(pnpdev[i]);
3909 #endif
3910 }
3911
3912 return 0;
3913 }
3914
3915 static void __exit aha152x_exit(void)
3916 {
3917 struct aha152x_hostdata *hd, *tmp;
3918
3919 list_for_each_entry_safe(hd, tmp, &aha152x_host_list, host_list) {
3920 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
3921
3922 aha152x_release(shost);
3923 }
3924 }
3925
3926 module_init(aha152x_init);
3927 module_exit(aha152x_exit);
3928
3929 #if !defined(MODULE)
3930 static int __init aha152x_setup(char *str)
3931 {
3932 #if defined(AHA152X_DEBUG)
3933 int ints[11];
3934 #else
3935 int ints[10];
3936 #endif
3937 get_options(str, ARRAY_SIZE(ints), ints);
3938
3939 if(setup_count>=ARRAY_SIZE(setup)) {
3940 printk(KERN_ERR "aha152x: you can only configure up to two controllers\n");
3941 return 1;
3942 }
3943
3944 setup[setup_count].conf = str;
3945 setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340;
3946 setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11;
3947 setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7;
3948 setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1;
3949 setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1;
3950 setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1;
3951 setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT;
3952 setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0;
3953 #if defined(AHA152X_DEBUG)
3954 setup[setup_count].debug = ints[0] >= 9 ? ints[9] : DEBUG_DEFAULT;
3955 if (ints[0] > 9) {
3956 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
3957 "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>[,<DEBUG>]]]]]]]]\n");
3958 #else
3959 if (ints[0] > 8) { /*}*/
3960 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
3961 "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n");
3962 #endif
3963 } else {
3964 setup_count++;
3965 return 0;
3966 }
3967
3968 return 1;
3969 }
3970 __setup("aha152x=", aha152x_setup);
3971 #endif
3972
3973 #endif /* !PCMCIA */
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