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Merge tag 'regulator-v3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / drivers / scsi / aha152x.c
1 /* aha152x.c -- Adaptec AHA-152x driver
2 * Author: Jürgen E. Fischer, fischer@norbit.de
3 * Copyright 1993-2004 Jürgen E. Fischer
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2, or (at your option) any
8 * later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 *
16 * $Id: aha152x.c,v 2.7 2004/01/24 11:42:59 fischer Exp $
17 *
18 * $Log: aha152x.c,v $
19 * Revision 2.7 2004/01/24 11:42:59 fischer
20 * - gather code that is not used by PCMCIA at the end
21 * - move request_region for !PCMCIA case to detection
22 * - migration to new scsi host api (remove legacy code)
23 * - free host scribble before scsi_done
24 * - fix error handling
25 * - one isapnp device added to id_table
26 *
27 * Revision 2.6 2003/10/30 20:52:47 fischer
28 * - interfaces changes for kernel 2.6
29 * - aha152x_probe_one introduced for pcmcia stub
30 * - fixed pnpdev handling
31 * - instead of allocation a new one, reuse command for request sense after check condition and reset
32 * - fixes race in is_complete
33 *
34 * Revision 2.5 2002/04/14 11:24:53 fischer
35 * - isapnp support
36 * - abort fixed
37 * - 2.5 support
38 *
39 * Revision 2.4 2000/12/16 12:53:56 fischer
40 * - allow REQUEST SENSE to be queued
41 * - handle shared PCI interrupts
42 *
43 * Revision 2.3 2000/11/04 16:40:26 fischer
44 * - handle data overruns
45 * - extend timeout for data phases
46 *
47 * Revision 2.2 2000/08/08 19:54:53 fischer
48 * - minor changes
49 *
50 * Revision 2.1 2000/05/17 16:23:17 fischer
51 * - signature update
52 * - fix for data out w/o scatter gather
53 *
54 * Revision 2.0 1999/12/25 15:07:32 fischer
55 * - interrupt routine completly reworked
56 * - basic support for new eh code
57 *
58 * Revision 1.21 1999/11/10 23:46:36 fischer
59 * - default to synchronous operation
60 * - synchronous negotiation fixed
61 * - added timeout to loops
62 * - debugging output can be controlled through procfs
63 *
64 * Revision 1.20 1999/11/07 18:37:31 fischer
65 * - synchronous operation works
66 * - resid support for sg driver
67 *
68 * Revision 1.19 1999/11/02 22:39:59 fischer
69 * - moved leading comments to README.aha152x
70 * - new additional module parameters
71 * - updates for 2.3
72 * - support for the Tripace TC1550 controller
73 * - interrupt handling changed
74 *
75 * Revision 1.18 1996/09/07 20:10:40 fischer
76 * - fixed can_queue handling (multiple outstanding commands working again)
77 *
78 * Revision 1.17 1996/08/17 16:05:14 fischer
79 * - biosparam improved
80 * - interrupt verification
81 * - updated documentation
82 * - cleanups
83 *
84 * Revision 1.16 1996/06/09 00:04:56 root
85 * - added configuration symbols for insmod (aha152x/aha152x1)
86 *
87 * Revision 1.15 1996/04/30 14:52:06 fischer
88 * - proc info fixed
89 * - support for extended translation for >1GB disks
90 *
91 * Revision 1.14 1996/01/17 15:11:20 fischer
92 * - fixed lockup in MESSAGE IN phase after reconnection
93 *
94 * Revision 1.13 1996/01/09 02:15:53 fischer
95 * - some cleanups
96 * - moved request_irq behind controller initialization
97 * (to avoid spurious interrupts)
98 *
99 * Revision 1.12 1995/12/16 12:26:07 fischer
100 * - barrier()s added
101 * - configurable RESET delay added
102 *
103 * Revision 1.11 1995/12/06 21:18:35 fischer
104 * - some minor updates
105 *
106 * Revision 1.10 1995/07/22 19:18:45 fischer
107 * - support for 2 controllers
108 * - started synchronous data transfers (not working yet)
109 *
110 * Revision 1.9 1995/03/18 09:20:24 root
111 * - patches for PCMCIA and modules
112 *
113 * Revision 1.8 1995/01/21 22:07:19 root
114 * - snarf_region => request_region
115 * - aha152x_intr interface change
116 *
117 * Revision 1.7 1995/01/02 23:19:36 root
118 * - updated COMMAND_SIZE to cmd_len
119 * - changed sti() to restore_flags()
120 * - fixed some #ifdef which generated warnings
121 *
122 * Revision 1.6 1994/11/24 20:35:27 root
123 * - problem with odd number of bytes in fifo fixed
124 *
125 * Revision 1.5 1994/10/30 14:39:56 root
126 * - abort code fixed
127 * - debugging improved
128 *
129 * Revision 1.4 1994/09/12 11:33:01 root
130 * - irqaction to request_irq
131 * - abortion updated
132 *
133 * Revision 1.3 1994/08/04 13:53:05 root
134 * - updates for mid-level-driver changes
135 * - accept unexpected BUSFREE phase as error condition
136 * - parity check now configurable
137 *
138 * Revision 1.2 1994/07/03 12:56:36 root
139 * - cleaned up debugging code
140 * - more tweaking on reset delays
141 * - updated abort/reset code (pretty untested...)
142 *
143 * Revision 1.1 1994/05/28 21:18:49 root
144 * - update for mid-level interface change (abort-reset)
145 * - delays after resets adjusted for some slow devices
146 *
147 * Revision 1.0 1994/03/25 12:52:00 root
148 * - Fixed "more data than expected" problem
149 * - added new BIOS signatures
150 *
151 * Revision 0.102 1994/01/31 20:44:12 root
152 * - minor changes in insw/outsw handling
153 *
154 * Revision 0.101 1993/12/13 01:16:27 root
155 * - fixed STATUS phase (non-GOOD stati were dropped sometimes;
156 * fixes problems with CD-ROM sector size detection & media change)
157 *
158 * Revision 0.100 1993/12/10 16:58:47 root
159 * - fix for unsuccessful selections in case of non-continuous id assignments
160 * on the scsi bus.
161 *
162 * Revision 0.99 1993/10/24 16:19:59 root
163 * - fixed DATA IN (rare read errors gone)
164 *
165 * Revision 0.98 1993/10/17 12:54:44 root
166 * - fixed some recent fixes (shame on me)
167 * - moved initialization of scratch area to aha152x_queue
168 *
169 * Revision 0.97 1993/10/09 18:53:53 root
170 * - DATA IN fixed. Rarely left data in the fifo.
171 *
172 * Revision 0.96 1993/10/03 00:53:59 root
173 * - minor changes on DATA IN
174 *
175 * Revision 0.95 1993/09/24 10:36:01 root
176 * - change handling of MSGI after reselection
177 * - fixed sti/cli
178 * - minor changes
179 *
180 * Revision 0.94 1993/09/18 14:08:22 root
181 * - fixed bug in multiple outstanding command code
182 * - changed detection
183 * - support for kernel command line configuration
184 * - reset corrected
185 * - changed message handling
186 *
187 * Revision 0.93 1993/09/15 20:41:19 root
188 * - fixed bugs with multiple outstanding commands
189 *
190 * Revision 0.92 1993/09/13 02:46:33 root
191 * - multiple outstanding commands work (no problems with IBM drive)
192 *
193 * Revision 0.91 1993/09/12 20:51:46 root
194 * added multiple outstanding commands
195 * (some problem with this $%&? IBM device remain)
196 *
197 * Revision 0.9 1993/09/12 11:11:22 root
198 * - corrected auto-configuration
199 * - changed the auto-configuration (added some '#define's)
200 * - added support for dis-/reconnection
201 *
202 * Revision 0.8 1993/09/06 23:09:39 root
203 * - added support for the drive activity light
204 * - minor changes
205 *
206 * Revision 0.7 1993/09/05 14:30:15 root
207 * - improved phase detection
208 * - now using the new snarf_region code of 0.99pl13
209 *
210 * Revision 0.6 1993/09/02 11:01:38 root
211 * first public release; added some signatures and biosparam()
212 *
213 * Revision 0.5 1993/08/30 10:23:30 root
214 * fixed timing problems with my IBM drive
215 *
216 * Revision 0.4 1993/08/29 14:06:52 root
217 * fixed some problems with timeouts due incomplete commands
218 *
219 * Revision 0.3 1993/08/28 15:55:03 root
220 * writing data works too. mounted and worked on a dos partition
221 *
222 * Revision 0.2 1993/08/27 22:42:07 root
223 * reading data works. Mounted a msdos partition.
224 *
225 * Revision 0.1 1993/08/25 13:38:30 root
226 * first "damn thing doesn't work" version
227 *
228 * Revision 0.0 1993/08/14 19:54:25 root
229 * empty function bodies; detect() works.
230 *
231 *
232 **************************************************************************
233
234 see Documentation/scsi/aha152x.txt for configuration details
235
236 **************************************************************************/
237
238 #include <linux/module.h>
239 #include <asm/irq.h>
240 #include <linux/io.h>
241 #include <linux/blkdev.h>
242 #include <linux/completion.h>
243 #include <linux/errno.h>
244 #include <linux/string.h>
245 #include <linux/wait.h>
246 #include <linux/ioport.h>
247 #include <linux/delay.h>
248 #include <linux/proc_fs.h>
249 #include <linux/interrupt.h>
250 #include <linux/init.h>
251 #include <linux/kernel.h>
252 #include <linux/isapnp.h>
253 #include <linux/spinlock.h>
254 #include <linux/workqueue.h>
255 #include <linux/list.h>
256 #include <linux/slab.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 #define DO_LOCK(flags) spin_lock_irqsave(&QLOCK,flags)
283 #define DO_UNLOCK(flags) spin_unlock_irqrestore(&QLOCK,flags)
284
285 #define LEAD "(scsi%d:%d:%d) "
286 #define INFO_LEAD KERN_INFO LEAD
287 #define CMDINFO(cmd) \
288 (cmd) ? ((cmd)->device->host->host_no) : -1, \
289 (cmd) ? ((cmd)->device->id & 0x0f) : -1, \
290 (cmd) ? ((u8)(cmd)->device->lun & 0x07) : -1
291
292 static inline void
293 CMD_INC_RESID(struct scsi_cmnd *cmd, int inc)
294 {
295 scsi_set_resid(cmd, scsi_get_resid(cmd) + inc);
296 }
297
298 #define DELAY_DEFAULT 1000
299
300 #if defined(PCMCIA)
301 #define IRQ_MIN 0
302 #define IRQ_MAX 16
303 #else
304 #define IRQ_MIN 9
305 #if defined(__PPC)
306 #define IRQ_MAX (nr_irqs-1)
307 #else
308 #define IRQ_MAX 12
309 #endif
310 #endif
311
312 enum {
313 not_issued = 0x0001, /* command not yet issued */
314 selecting = 0x0002, /* target is being selected */
315 identified = 0x0004, /* IDENTIFY was sent */
316 disconnected = 0x0008, /* target disconnected */
317 completed = 0x0010, /* target sent COMMAND COMPLETE */
318 aborted = 0x0020, /* ABORT was sent */
319 resetted = 0x0040, /* BUS DEVICE RESET was sent */
320 spiordy = 0x0080, /* waiting for SPIORDY to raise */
321 syncneg = 0x0100, /* synchronous negotiation in progress */
322 aborting = 0x0200, /* ABORT is pending */
323 resetting = 0x0400, /* BUS DEVICE RESET is pending */
324 check_condition = 0x0800, /* requesting sense after CHECK CONDITION */
325 };
326
327 MODULE_AUTHOR("Jürgen Fischer");
328 MODULE_DESCRIPTION(AHA152X_REVID);
329 MODULE_LICENSE("GPL");
330
331 #if !defined(PCMCIA)
332 #if defined(MODULE)
333 static int io[] = {0, 0};
334 module_param_array(io, int, NULL, 0);
335 MODULE_PARM_DESC(io,"base io address of controller");
336
337 static int irq[] = {0, 0};
338 module_param_array(irq, int, NULL, 0);
339 MODULE_PARM_DESC(irq,"interrupt for controller");
340
341 static int scsiid[] = {7, 7};
342 module_param_array(scsiid, int, NULL, 0);
343 MODULE_PARM_DESC(scsiid,"scsi id of controller");
344
345 static int reconnect[] = {1, 1};
346 module_param_array(reconnect, int, NULL, 0);
347 MODULE_PARM_DESC(reconnect,"allow targets to disconnect");
348
349 static int parity[] = {1, 1};
350 module_param_array(parity, int, NULL, 0);
351 MODULE_PARM_DESC(parity,"use scsi parity");
352
353 static int sync[] = {1, 1};
354 module_param_array(sync, int, NULL, 0);
355 MODULE_PARM_DESC(sync,"use synchronous transfers");
356
357 static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT};
358 module_param_array(delay, int, NULL, 0);
359 MODULE_PARM_DESC(delay,"scsi reset delay");
360
361 static int exttrans[] = {0, 0};
362 module_param_array(exttrans, int, NULL, 0);
363 MODULE_PARM_DESC(exttrans,"use extended translation");
364
365 static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
366 module_param_array(aha152x, int, NULL, 0);
367 MODULE_PARM_DESC(aha152x, "parameters for first controller");
368
369 static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
370 module_param_array(aha152x1, int, NULL, 0);
371 MODULE_PARM_DESC(aha152x1, "parameters for second controller");
372 #endif /* MODULE */
373
374 #ifdef __ISAPNP__
375 static struct isapnp_device_id id_table[] = {
376 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1502), 0 },
377 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1505), 0 },
378 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1510), 0 },
379 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1515), 0 },
380 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1520), 0 },
381 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2015), 0 },
382 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1522), 0 },
383 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2215), 0 },
384 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1530), 0 },
385 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3015), 0 },
386 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1532), 0 },
387 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3215), 0 },
388 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x6360), 0 },
389 { ISAPNP_DEVICE_SINGLE_END, }
390 };
391 MODULE_DEVICE_TABLE(isapnp, id_table);
392 #endif /* ISAPNP */
393
394 #endif /* !PCMCIA */
395
396 static struct scsi_host_template aha152x_driver_template;
397
398 /*
399 * internal states of the host
400 *
401 */
402 enum aha152x_state {
403 idle=0,
404 unknown,
405 seldo,
406 seldi,
407 selto,
408 busfree,
409 msgo,
410 cmd,
411 msgi,
412 status,
413 datai,
414 datao,
415 parerr,
416 rsti,
417 maxstate
418 };
419
420 /*
421 * current state information of the host
422 *
423 */
424 struct aha152x_hostdata {
425 Scsi_Cmnd *issue_SC;
426 /* pending commands to issue */
427
428 Scsi_Cmnd *current_SC;
429 /* current command on the bus */
430
431 Scsi_Cmnd *disconnected_SC;
432 /* commands that disconnected */
433
434 Scsi_Cmnd *done_SC;
435 /* command that was completed */
436
437 spinlock_t lock;
438 /* host lock */
439
440 #if defined(AHA152X_STAT)
441 int total_commands;
442 int disconnections;
443 int busfree_without_any_action;
444 int busfree_without_old_command;
445 int busfree_without_new_command;
446 int busfree_without_done_command;
447 int busfree_with_check_condition;
448 int count[maxstate];
449 int count_trans[maxstate];
450 unsigned long time[maxstate];
451 #endif
452
453 int commands; /* current number of commands */
454
455 int reconnect; /* disconnection allowed */
456 int parity; /* parity checking enabled */
457 int synchronous; /* synchronous transferes enabled */
458 int delay; /* reset out delay */
459 int ext_trans; /* extended translation enabled */
460
461 int swint; /* software-interrupt was fired during detect() */
462 int service; /* bh needs to be run */
463 int in_intr; /* bh is running */
464
465 /* current state,
466 previous state,
467 last state different from current state */
468 enum aha152x_state state, prevstate, laststate;
469
470 int target;
471 /* reconnecting target */
472
473 unsigned char syncrate[8];
474 /* current synchronous transfer agreements */
475
476 unsigned char syncneg[8];
477 /* 0: no negotiation;
478 * 1: negotiation in progress;
479 * 2: negotiation completed
480 */
481
482 int cmd_i;
483 /* number of sent bytes of current command */
484
485 int msgi_len;
486 /* number of received message bytes */
487 unsigned char msgi[256];
488 /* received message bytes */
489
490 int msgo_i, msgo_len;
491 /* number of sent bytes and length of current messages */
492 unsigned char msgo[256];
493 /* pending messages */
494
495 int data_len;
496 /* number of sent/received bytes in dataphase */
497
498 unsigned long io_port0;
499 unsigned long io_port1;
500
501 #ifdef __ISAPNP__
502 struct pnp_dev *pnpdev;
503 #endif
504 struct list_head host_list;
505 };
506
507
508 /*
509 * host specific command extension
510 *
511 */
512 struct aha152x_scdata {
513 Scsi_Cmnd *next; /* next sc in queue */
514 struct completion *done;/* semaphore to block on */
515 struct scsi_eh_save ses;
516 };
517
518 /* access macros for hostdata */
519
520 #define HOSTDATA(shpnt) ((struct aha152x_hostdata *) &shpnt->hostdata)
521
522 #define HOSTNO ((shpnt)->host_no)
523
524 #define CURRENT_SC (HOSTDATA(shpnt)->current_SC)
525 #define DONE_SC (HOSTDATA(shpnt)->done_SC)
526 #define ISSUE_SC (HOSTDATA(shpnt)->issue_SC)
527 #define DISCONNECTED_SC (HOSTDATA(shpnt)->disconnected_SC)
528 #define QLOCK (HOSTDATA(shpnt)->lock)
529 #define QLOCKER (HOSTDATA(shpnt)->locker)
530 #define QLOCKERL (HOSTDATA(shpnt)->lockerl)
531
532 #define STATE (HOSTDATA(shpnt)->state)
533 #define PREVSTATE (HOSTDATA(shpnt)->prevstate)
534 #define LASTSTATE (HOSTDATA(shpnt)->laststate)
535
536 #define RECONN_TARGET (HOSTDATA(shpnt)->target)
537
538 #define CMD_I (HOSTDATA(shpnt)->cmd_i)
539
540 #define MSGO(i) (HOSTDATA(shpnt)->msgo[i])
541 #define MSGO_I (HOSTDATA(shpnt)->msgo_i)
542 #define MSGOLEN (HOSTDATA(shpnt)->msgo_len)
543 #define ADDMSGO(x) (MSGOLEN<256 ? (void)(MSGO(MSGOLEN++)=x) : aha152x_error(shpnt,"MSGO overflow"))
544
545 #define MSGI(i) (HOSTDATA(shpnt)->msgi[i])
546 #define MSGILEN (HOSTDATA(shpnt)->msgi_len)
547 #define ADDMSGI(x) (MSGILEN<256 ? (void)(MSGI(MSGILEN++)=x) : aha152x_error(shpnt,"MSGI overflow"))
548
549 #define DATA_LEN (HOSTDATA(shpnt)->data_len)
550
551 #define SYNCRATE (HOSTDATA(shpnt)->syncrate[CURRENT_SC->device->id])
552 #define SYNCNEG (HOSTDATA(shpnt)->syncneg[CURRENT_SC->device->id])
553
554 #define DELAY (HOSTDATA(shpnt)->delay)
555 #define EXT_TRANS (HOSTDATA(shpnt)->ext_trans)
556 #define TC1550 (HOSTDATA(shpnt)->tc1550)
557 #define RECONNECT (HOSTDATA(shpnt)->reconnect)
558 #define PARITY (HOSTDATA(shpnt)->parity)
559 #define SYNCHRONOUS (HOSTDATA(shpnt)->synchronous)
560
561 #define HOSTIOPORT0 (HOSTDATA(shpnt)->io_port0)
562 #define HOSTIOPORT1 (HOSTDATA(shpnt)->io_port1)
563
564 #define SCDATA(SCpnt) ((struct aha152x_scdata *) (SCpnt)->host_scribble)
565 #define SCNEXT(SCpnt) SCDATA(SCpnt)->next
566 #define SCSEM(SCpnt) SCDATA(SCpnt)->done
567
568 #define SG_ADDRESS(buffer) ((char *) sg_virt((buffer)))
569
570 /* state handling */
571 static void seldi_run(struct Scsi_Host *shpnt);
572 static void seldo_run(struct Scsi_Host *shpnt);
573 static void selto_run(struct Scsi_Host *shpnt);
574 static void busfree_run(struct Scsi_Host *shpnt);
575
576 static void msgo_init(struct Scsi_Host *shpnt);
577 static void msgo_run(struct Scsi_Host *shpnt);
578 static void msgo_end(struct Scsi_Host *shpnt);
579
580 static void cmd_init(struct Scsi_Host *shpnt);
581 static void cmd_run(struct Scsi_Host *shpnt);
582 static void cmd_end(struct Scsi_Host *shpnt);
583
584 static void datai_init(struct Scsi_Host *shpnt);
585 static void datai_run(struct Scsi_Host *shpnt);
586 static void datai_end(struct Scsi_Host *shpnt);
587
588 static void datao_init(struct Scsi_Host *shpnt);
589 static void datao_run(struct Scsi_Host *shpnt);
590 static void datao_end(struct Scsi_Host *shpnt);
591
592 static void status_run(struct Scsi_Host *shpnt);
593
594 static void msgi_run(struct Scsi_Host *shpnt);
595 static void msgi_end(struct Scsi_Host *shpnt);
596
597 static void parerr_run(struct Scsi_Host *shpnt);
598 static void rsti_run(struct Scsi_Host *shpnt);
599
600 static void is_complete(struct Scsi_Host *shpnt);
601
602 /*
603 * driver states
604 *
605 */
606 static struct {
607 char *name;
608 void (*init)(struct Scsi_Host *);
609 void (*run)(struct Scsi_Host *);
610 void (*end)(struct Scsi_Host *);
611 int spio;
612 } states[] = {
613 { "idle", NULL, NULL, NULL, 0},
614 { "unknown", NULL, NULL, NULL, 0},
615 { "seldo", NULL, seldo_run, NULL, 0},
616 { "seldi", NULL, seldi_run, NULL, 0},
617 { "selto", NULL, selto_run, NULL, 0},
618 { "busfree", NULL, busfree_run, NULL, 0},
619 { "msgo", msgo_init, msgo_run, msgo_end, 1},
620 { "cmd", cmd_init, cmd_run, cmd_end, 1},
621 { "msgi", NULL, msgi_run, msgi_end, 1},
622 { "status", NULL, status_run, NULL, 1},
623 { "datai", datai_init, datai_run, datai_end, 0},
624 { "datao", datao_init, datao_run, datao_end, 0},
625 { "parerr", NULL, parerr_run, NULL, 0},
626 { "rsti", NULL, rsti_run, NULL, 0},
627 };
628
629 /* setup & interrupt */
630 static irqreturn_t intr(int irq, void *dev_id);
631 static void reset_ports(struct Scsi_Host *shpnt);
632 static void aha152x_error(struct Scsi_Host *shpnt, char *msg);
633 static void done(struct Scsi_Host *shpnt, int error);
634
635 /* diagnostics */
636 static void show_command(Scsi_Cmnd * ptr);
637 static void show_queues(struct Scsi_Host *shpnt);
638 static void disp_enintr(struct Scsi_Host *shpnt);
639
640
641 /*
642 * queue services:
643 *
644 */
645 static inline void append_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC)
646 {
647 Scsi_Cmnd *end;
648
649 SCNEXT(new_SC) = NULL;
650 if (!*SC)
651 *SC = new_SC;
652 else {
653 for (end = *SC; SCNEXT(end); end = SCNEXT(end))
654 ;
655 SCNEXT(end) = new_SC;
656 }
657 }
658
659 static inline Scsi_Cmnd *remove_first_SC(Scsi_Cmnd ** SC)
660 {
661 Scsi_Cmnd *ptr;
662
663 ptr = *SC;
664 if (ptr) {
665 *SC = SCNEXT(*SC);
666 SCNEXT(ptr)=NULL;
667 }
668 return ptr;
669 }
670
671 static inline Scsi_Cmnd *remove_lun_SC(Scsi_Cmnd ** SC, int target, int lun)
672 {
673 Scsi_Cmnd *ptr, *prev;
674
675 for (ptr = *SC, prev = NULL;
676 ptr && ((ptr->device->id != target) || (ptr->device->lun != lun));
677 prev = ptr, ptr = SCNEXT(ptr))
678 ;
679
680 if (ptr) {
681 if (prev)
682 SCNEXT(prev) = SCNEXT(ptr);
683 else
684 *SC = SCNEXT(ptr);
685
686 SCNEXT(ptr)=NULL;
687 }
688
689 return ptr;
690 }
691
692 static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, Scsi_Cmnd *SCp)
693 {
694 Scsi_Cmnd *ptr, *prev;
695
696 for (ptr = *SC, prev = NULL;
697 ptr && SCp!=ptr;
698 prev = ptr, ptr = SCNEXT(ptr))
699 ;
700
701 if (ptr) {
702 if (prev)
703 SCNEXT(prev) = SCNEXT(ptr);
704 else
705 *SC = SCNEXT(ptr);
706
707 SCNEXT(ptr)=NULL;
708 }
709
710 return ptr;
711 }
712
713 static irqreturn_t swintr(int irqno, void *dev_id)
714 {
715 struct Scsi_Host *shpnt = dev_id;
716
717 HOSTDATA(shpnt)->swint++;
718
719 SETPORT(DMACNTRL0, INTEN);
720 return IRQ_HANDLED;
721 }
722
723 struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)
724 {
725 struct Scsi_Host *shpnt;
726
727 shpnt = scsi_host_alloc(&aha152x_driver_template, sizeof(struct aha152x_hostdata));
728 if (!shpnt) {
729 printk(KERN_ERR "aha152x: scsi_host_alloc failed\n");
730 return NULL;
731 }
732
733 memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt));
734 INIT_LIST_HEAD(&HOSTDATA(shpnt)->host_list);
735
736 /* need to have host registered before triggering any interrupt */
737 list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list);
738
739 shpnt->io_port = setup->io_port;
740 shpnt->n_io_port = IO_RANGE;
741 shpnt->irq = setup->irq;
742
743 if (!setup->tc1550) {
744 HOSTIOPORT0 = setup->io_port;
745 HOSTIOPORT1 = setup->io_port;
746 } else {
747 HOSTIOPORT0 = setup->io_port+0x10;
748 HOSTIOPORT1 = setup->io_port-0x10;
749 }
750
751 spin_lock_init(&QLOCK);
752 RECONNECT = setup->reconnect;
753 SYNCHRONOUS = setup->synchronous;
754 PARITY = setup->parity;
755 DELAY = setup->delay;
756 EXT_TRANS = setup->ext_trans;
757
758 SETPORT(SCSIID, setup->scsiid << 4);
759 shpnt->this_id = setup->scsiid;
760
761 if (setup->reconnect)
762 shpnt->can_queue = AHA152X_MAXQUEUE;
763
764 /* RESET OUT */
765 printk("aha152x: resetting bus...\n");
766 SETPORT(SCSISEQ, SCSIRSTO);
767 mdelay(256);
768 SETPORT(SCSISEQ, 0);
769 mdelay(DELAY);
770
771 reset_ports(shpnt);
772
773 printk(KERN_INFO
774 "aha152x%d%s: "
775 "vital data: rev=%x, "
776 "io=0x%03lx (0x%03lx/0x%03lx), "
777 "irq=%d, "
778 "scsiid=%d, "
779 "reconnect=%s, "
780 "parity=%s, "
781 "synchronous=%s, "
782 "delay=%d, "
783 "extended translation=%s\n",
784 shpnt->host_no, setup->tc1550 ? " (tc1550 mode)" : "",
785 GETPORT(REV) & 0x7,
786 shpnt->io_port, HOSTIOPORT0, HOSTIOPORT1,
787 shpnt->irq,
788 shpnt->this_id,
789 RECONNECT ? "enabled" : "disabled",
790 PARITY ? "enabled" : "disabled",
791 SYNCHRONOUS ? "enabled" : "disabled",
792 DELAY,
793 EXT_TRANS ? "enabled" : "disabled");
794
795 /* not expecting any interrupts */
796 SETPORT(SIMODE0, 0);
797 SETPORT(SIMODE1, 0);
798
799 if (request_irq(shpnt->irq, swintr, IRQF_SHARED, "aha152x", shpnt)) {
800 printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq);
801 goto out_host_put;
802 }
803
804 HOSTDATA(shpnt)->swint = 0;
805
806 printk(KERN_INFO "aha152x%d: trying software interrupt, ", shpnt->host_no);
807
808 mb();
809 SETPORT(DMACNTRL0, SWINT|INTEN);
810 mdelay(1000);
811 free_irq(shpnt->irq, shpnt);
812
813 if (!HOSTDATA(shpnt)->swint) {
814 if (TESTHI(DMASTAT, INTSTAT)) {
815 printk("lost.\n");
816 } else {
817 printk("failed.\n");
818 }
819
820 SETPORT(DMACNTRL0, INTEN);
821
822 printk(KERN_ERR "aha152x%d: irq %d possibly wrong. "
823 "Please verify.\n", shpnt->host_no, shpnt->irq);
824 goto out_host_put;
825 }
826 printk("ok.\n");
827
828
829 /* clear interrupts */
830 SETPORT(SSTAT0, 0x7f);
831 SETPORT(SSTAT1, 0xef);
832
833 if (request_irq(shpnt->irq, intr, IRQF_SHARED, "aha152x", shpnt)) {
834 printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq);
835 goto out_host_put;
836 }
837
838 if( scsi_add_host(shpnt, NULL) ) {
839 free_irq(shpnt->irq, shpnt);
840 printk(KERN_ERR "aha152x%d: failed to add host.\n", shpnt->host_no);
841 goto out_host_put;
842 }
843
844 scsi_scan_host(shpnt);
845
846 return shpnt;
847
848 out_host_put:
849 list_del(&HOSTDATA(shpnt)->host_list);
850 scsi_host_put(shpnt);
851
852 return NULL;
853 }
854
855 void aha152x_release(struct Scsi_Host *shpnt)
856 {
857 if (!shpnt)
858 return;
859
860 scsi_remove_host(shpnt);
861 if (shpnt->irq)
862 free_irq(shpnt->irq, shpnt);
863
864 #if !defined(PCMCIA)
865 if (shpnt->io_port)
866 release_region(shpnt->io_port, IO_RANGE);
867 #endif
868
869 #ifdef __ISAPNP__
870 if (HOSTDATA(shpnt)->pnpdev)
871 pnp_device_detach(HOSTDATA(shpnt)->pnpdev);
872 #endif
873
874 list_del(&HOSTDATA(shpnt)->host_list);
875 scsi_host_put(shpnt);
876 }
877
878
879 /*
880 * setup controller to generate interrupts depending
881 * on current state (lock has to be acquired)
882 *
883 */
884 static int setup_expected_interrupts(struct Scsi_Host *shpnt)
885 {
886 if(CURRENT_SC) {
887 CURRENT_SC->SCp.phase |= 1 << 16;
888
889 if(CURRENT_SC->SCp.phase & selecting) {
890 SETPORT(SSTAT1, SELTO);
891 SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0));
892 SETPORT(SIMODE1, ENSELTIMO);
893 } else {
894 SETPORT(SIMODE0, (CURRENT_SC->SCp.phase & spiordy) ? ENSPIORDY : 0);
895 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
896 }
897 } else if(STATE==seldi) {
898 SETPORT(SIMODE0, 0);
899 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
900 } else {
901 SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0);
902 SETPORT(SIMODE1, ENSCSIRST | ( (ISSUE_SC||DONE_SC) ? ENBUSFREE : 0));
903 }
904
905 if(!HOSTDATA(shpnt)->in_intr)
906 SETBITS(DMACNTRL0, INTEN);
907
908 return TESTHI(DMASTAT, INTSTAT);
909 }
910
911
912 /*
913 * Queue a command and setup interrupts for a free bus.
914 */
915 static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, struct completion *complete,
916 int phase, void (*done)(Scsi_Cmnd *))
917 {
918 struct Scsi_Host *shpnt = SCpnt->device->host;
919 unsigned long flags;
920
921 SCpnt->scsi_done = done;
922 SCpnt->SCp.phase = not_issued | phase;
923 SCpnt->SCp.Status = 0x1; /* Ilegal status by SCSI standard */
924 SCpnt->SCp.Message = 0;
925 SCpnt->SCp.have_data_in = 0;
926 SCpnt->SCp.sent_command = 0;
927
928 if(SCpnt->SCp.phase & (resetting|check_condition)) {
929 if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) {
930 scmd_printk(KERN_ERR, SCpnt, "cannot reuse command\n");
931 return FAILED;
932 }
933 } else {
934 SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC);
935 if(!SCpnt->host_scribble) {
936 scmd_printk(KERN_ERR, SCpnt, "allocation failed\n");
937 return FAILED;
938 }
939 }
940
941 SCNEXT(SCpnt) = NULL;
942 SCSEM(SCpnt) = complete;
943
944 /* setup scratch area
945 SCp.ptr : buffer pointer
946 SCp.this_residual : buffer length
947 SCp.buffer : next buffer
948 SCp.buffers_residual : left buffers in list
949 SCp.phase : current state of the command */
950
951 if ((phase & resetting) || !scsi_sglist(SCpnt)) {
952 SCpnt->SCp.ptr = NULL;
953 SCpnt->SCp.this_residual = 0;
954 scsi_set_resid(SCpnt, 0);
955 SCpnt->SCp.buffer = NULL;
956 SCpnt->SCp.buffers_residual = 0;
957 } else {
958 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
959 SCpnt->SCp.buffer = scsi_sglist(SCpnt);
960 SCpnt->SCp.ptr = SG_ADDRESS(SCpnt->SCp.buffer);
961 SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length;
962 SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1;
963 }
964
965 DO_LOCK(flags);
966
967 #if defined(AHA152X_STAT)
968 HOSTDATA(shpnt)->total_commands++;
969 #endif
970
971 /* Turn led on, when this is the first command. */
972 HOSTDATA(shpnt)->commands++;
973 if (HOSTDATA(shpnt)->commands==1)
974 SETPORT(PORTA, 1);
975
976 append_SC(&ISSUE_SC, SCpnt);
977
978 if(!HOSTDATA(shpnt)->in_intr)
979 setup_expected_interrupts(shpnt);
980
981 DO_UNLOCK(flags);
982
983 return 0;
984 }
985
986 /*
987 * queue a command
988 *
989 */
990 static int aha152x_queue_lck(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
991 {
992 return aha152x_internal_queue(SCpnt, NULL, 0, done);
993 }
994
995 static DEF_SCSI_QCMD(aha152x_queue)
996
997
998 /*
999 *
1000 */
1001 static void reset_done(Scsi_Cmnd *SCpnt)
1002 {
1003 if(SCSEM(SCpnt)) {
1004 complete(SCSEM(SCpnt));
1005 } else {
1006 printk(KERN_ERR "aha152x: reset_done w/o completion\n");
1007 }
1008 }
1009
1010 /*
1011 * Abort a command
1012 *
1013 */
1014 static int aha152x_abort(Scsi_Cmnd *SCpnt)
1015 {
1016 struct Scsi_Host *shpnt = SCpnt->device->host;
1017 Scsi_Cmnd *ptr;
1018 unsigned long flags;
1019
1020 DO_LOCK(flags);
1021
1022 ptr=remove_SC(&ISSUE_SC, SCpnt);
1023
1024 if(ptr) {
1025 HOSTDATA(shpnt)->commands--;
1026 if (!HOSTDATA(shpnt)->commands)
1027 SETPORT(PORTA, 0);
1028 DO_UNLOCK(flags);
1029
1030 kfree(SCpnt->host_scribble);
1031 SCpnt->host_scribble=NULL;
1032
1033 return SUCCESS;
1034 }
1035
1036 DO_UNLOCK(flags);
1037
1038 /*
1039 * FIXME:
1040 * for current command: queue ABORT for message out and raise ATN
1041 * for disconnected command: pseudo SC with ABORT message or ABORT on reselection?
1042 *
1043 */
1044
1045 scmd_printk(KERN_ERR, SCpnt,
1046 "cannot abort running or disconnected command\n");
1047
1048 return FAILED;
1049 }
1050
1051 /*
1052 * Reset a device
1053 *
1054 */
1055 static int aha152x_device_reset(Scsi_Cmnd * SCpnt)
1056 {
1057 struct Scsi_Host *shpnt = SCpnt->device->host;
1058 DECLARE_COMPLETION(done);
1059 int ret, issued, disconnected;
1060 unsigned char old_cmd_len = SCpnt->cmd_len;
1061 unsigned long flags;
1062 unsigned long timeleft;
1063
1064 if(CURRENT_SC==SCpnt) {
1065 scmd_printk(KERN_ERR, SCpnt, "cannot reset current device\n");
1066 return FAILED;
1067 }
1068
1069 DO_LOCK(flags);
1070 issued = remove_SC(&ISSUE_SC, SCpnt) == NULL;
1071 disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt);
1072 DO_UNLOCK(flags);
1073
1074 SCpnt->cmd_len = 0;
1075
1076 aha152x_internal_queue(SCpnt, &done, resetting, reset_done);
1077
1078 timeleft = wait_for_completion_timeout(&done, 100*HZ);
1079 if (!timeleft) {
1080 /* remove command from issue queue */
1081 DO_LOCK(flags);
1082 remove_SC(&ISSUE_SC, SCpnt);
1083 DO_UNLOCK(flags);
1084 }
1085
1086 SCpnt->cmd_len = old_cmd_len;
1087
1088 DO_LOCK(flags);
1089
1090 if(SCpnt->SCp.phase & resetted) {
1091 HOSTDATA(shpnt)->commands--;
1092 if (!HOSTDATA(shpnt)->commands)
1093 SETPORT(PORTA, 0);
1094 kfree(SCpnt->host_scribble);
1095 SCpnt->host_scribble=NULL;
1096
1097 ret = SUCCESS;
1098 } else {
1099 /* requeue */
1100 if(!issued) {
1101 append_SC(&ISSUE_SC, SCpnt);
1102 } else if(disconnected) {
1103 append_SC(&DISCONNECTED_SC, SCpnt);
1104 }
1105
1106 ret = FAILED;
1107 }
1108
1109 DO_UNLOCK(flags);
1110 return ret;
1111 }
1112
1113 static void free_hard_reset_SCs(struct Scsi_Host *shpnt, Scsi_Cmnd **SCs)
1114 {
1115 Scsi_Cmnd *ptr;
1116
1117 ptr=*SCs;
1118 while(ptr) {
1119 Scsi_Cmnd *next;
1120
1121 if(SCDATA(ptr)) {
1122 next = SCNEXT(ptr);
1123 } else {
1124 scmd_printk(KERN_DEBUG, ptr,
1125 "queue corrupted at %p\n", ptr);
1126 next = NULL;
1127 }
1128
1129 if (!ptr->device->soft_reset) {
1130 remove_SC(SCs, ptr);
1131 HOSTDATA(shpnt)->commands--;
1132 kfree(ptr->host_scribble);
1133 ptr->host_scribble=NULL;
1134 }
1135
1136 ptr = next;
1137 }
1138 }
1139
1140 /*
1141 * Reset the bus
1142 *
1143 */
1144 static int aha152x_bus_reset_host(struct Scsi_Host *shpnt)
1145 {
1146 unsigned long flags;
1147
1148 DO_LOCK(flags);
1149
1150 free_hard_reset_SCs(shpnt, &ISSUE_SC);
1151 free_hard_reset_SCs(shpnt, &DISCONNECTED_SC);
1152
1153 SETPORT(SCSISEQ, SCSIRSTO);
1154 mdelay(256);
1155 SETPORT(SCSISEQ, 0);
1156 mdelay(DELAY);
1157
1158 setup_expected_interrupts(shpnt);
1159 if(HOSTDATA(shpnt)->commands==0)
1160 SETPORT(PORTA, 0);
1161
1162 DO_UNLOCK(flags);
1163
1164 return SUCCESS;
1165 }
1166
1167 /*
1168 * Reset the bus
1169 *
1170 */
1171 static int aha152x_bus_reset(Scsi_Cmnd *SCpnt)
1172 {
1173 return aha152x_bus_reset_host(SCpnt->device->host);
1174 }
1175
1176 /*
1177 * Restore default values to the AIC-6260 registers and reset the fifos
1178 *
1179 */
1180 static void reset_ports(struct Scsi_Host *shpnt)
1181 {
1182 unsigned long flags;
1183
1184 /* disable interrupts */
1185 SETPORT(DMACNTRL0, RSTFIFO);
1186
1187 SETPORT(SCSISEQ, 0);
1188
1189 SETPORT(SXFRCTL1, 0);
1190 SETPORT(SCSISIG, 0);
1191 SETRATE(0);
1192
1193 /* clear all interrupt conditions */
1194 SETPORT(SSTAT0, 0x7f);
1195 SETPORT(SSTAT1, 0xef);
1196
1197 SETPORT(SSTAT4, SYNCERR | FWERR | FRERR);
1198
1199 SETPORT(DMACNTRL0, 0);
1200 SETPORT(DMACNTRL1, 0);
1201
1202 SETPORT(BRSTCNTRL, 0xf1);
1203
1204 /* clear SCSI fifos and transfer count */
1205 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1206 SETPORT(SXFRCTL0, CH1);
1207
1208 DO_LOCK(flags);
1209 setup_expected_interrupts(shpnt);
1210 DO_UNLOCK(flags);
1211 }
1212
1213 /*
1214 * Reset the host (bus and controller)
1215 *
1216 */
1217 int aha152x_host_reset_host(struct Scsi_Host *shpnt)
1218 {
1219 aha152x_bus_reset_host(shpnt);
1220 reset_ports(shpnt);
1221
1222 return SUCCESS;
1223 }
1224
1225 /*
1226 * Reset the host (bus and controller)
1227 *
1228 */
1229 static int aha152x_host_reset(Scsi_Cmnd *SCpnt)
1230 {
1231 return aha152x_host_reset_host(SCpnt->device->host);
1232 }
1233
1234 /*
1235 * Return the "logical geometry"
1236 *
1237 */
1238 static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev,
1239 sector_t capacity, int *info_array)
1240 {
1241 struct Scsi_Host *shpnt = sdev->host;
1242
1243 /* try default translation */
1244 info_array[0] = 64;
1245 info_array[1] = 32;
1246 info_array[2] = (unsigned long)capacity / (64 * 32);
1247
1248 /* for disks >1GB do some guessing */
1249 if (info_array[2] >= 1024) {
1250 int info[3];
1251
1252 /* try to figure out the geometry from the partition table */
1253 if (scsicam_bios_param(bdev, capacity, info) < 0 ||
1254 !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) {
1255 if (EXT_TRANS) {
1256 printk(KERN_NOTICE
1257 "aha152x: unable to verify geometry for disk with >1GB.\n"
1258 " using extended translation.\n");
1259 info_array[0] = 255;
1260 info_array[1] = 63;
1261 info_array[2] = (unsigned long)capacity / (255 * 63);
1262 } else {
1263 printk(KERN_NOTICE
1264 "aha152x: unable to verify geometry for disk with >1GB.\n"
1265 " Using default translation. Please verify yourself.\n"
1266 " Perhaps you need to enable extended translation in the driver.\n"
1267 " See Documentation/scsi/aha152x.txt for details.\n");
1268 }
1269 } else {
1270 info_array[0] = info[0];
1271 info_array[1] = info[1];
1272 info_array[2] = info[2];
1273
1274 if (info[0] == 255 && !EXT_TRANS) {
1275 printk(KERN_NOTICE
1276 "aha152x: current partition table is using extended translation.\n"
1277 " using it also, although it's not explicitly enabled.\n");
1278 }
1279 }
1280 }
1281
1282 return 0;
1283 }
1284
1285 /*
1286 * Internal done function
1287 *
1288 */
1289 static void done(struct Scsi_Host *shpnt, int error)
1290 {
1291 if (CURRENT_SC) {
1292 if(DONE_SC)
1293 scmd_printk(KERN_ERR, CURRENT_SC,
1294 "there's already a completed command %p "
1295 "- will cause abort\n", DONE_SC);
1296
1297 DONE_SC = CURRENT_SC;
1298 CURRENT_SC = NULL;
1299 DONE_SC->result = error;
1300 } else
1301 printk(KERN_ERR "aha152x: done() called outside of command\n");
1302 }
1303
1304 static struct work_struct aha152x_tq;
1305
1306 /*
1307 * Run service completions on the card with interrupts enabled.
1308 *
1309 */
1310 static void run(struct work_struct *work)
1311 {
1312 struct aha152x_hostdata *hd;
1313
1314 list_for_each_entry(hd, &aha152x_host_list, host_list) {
1315 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
1316
1317 is_complete(shost);
1318 }
1319 }
1320
1321 /*
1322 * Interrupt handler
1323 *
1324 */
1325 static irqreturn_t intr(int irqno, void *dev_id)
1326 {
1327 struct Scsi_Host *shpnt = dev_id;
1328 unsigned long flags;
1329 unsigned char rev, dmacntrl0;
1330
1331 /*
1332 * Read a couple of registers that are known to not be all 1's. If
1333 * we read all 1's (-1), that means that either:
1334 *
1335 * a. The host adapter chip has gone bad, and we cannot control it,
1336 * OR
1337 * b. The host adapter is a PCMCIA card that has been ejected
1338 *
1339 * In either case, we cannot do anything with the host adapter at
1340 * this point in time. So just ignore the interrupt and return.
1341 * In the latter case, the interrupt might actually be meant for
1342 * someone else sharing this IRQ, and that driver will handle it.
1343 */
1344 rev = GETPORT(REV);
1345 dmacntrl0 = GETPORT(DMACNTRL0);
1346 if ((rev == 0xFF) && (dmacntrl0 == 0xFF))
1347 return IRQ_NONE;
1348
1349 if( TESTLO(DMASTAT, INTSTAT) )
1350 return IRQ_NONE;
1351
1352 /* no more interrupts from the controller, while we're busy.
1353 INTEN is restored by the BH handler */
1354 CLRBITS(DMACNTRL0, INTEN);
1355
1356 DO_LOCK(flags);
1357 if( HOSTDATA(shpnt)->service==0 ) {
1358 HOSTDATA(shpnt)->service=1;
1359
1360 /* Poke the BH handler */
1361 INIT_WORK(&aha152x_tq, run);
1362 schedule_work(&aha152x_tq);
1363 }
1364 DO_UNLOCK(flags);
1365
1366 return IRQ_HANDLED;
1367 }
1368
1369 /*
1370 * busfree phase
1371 * - handle completition/disconnection/error of current command
1372 * - start selection for next command (if any)
1373 */
1374 static void busfree_run(struct Scsi_Host *shpnt)
1375 {
1376 unsigned long flags;
1377 #if defined(AHA152X_STAT)
1378 int action=0;
1379 #endif
1380
1381 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1382 SETPORT(SXFRCTL0, CH1);
1383
1384 SETPORT(SSTAT1, CLRBUSFREE);
1385
1386 if(CURRENT_SC) {
1387 #if defined(AHA152X_STAT)
1388 action++;
1389 #endif
1390 CURRENT_SC->SCp.phase &= ~syncneg;
1391
1392 if(CURRENT_SC->SCp.phase & completed) {
1393 /* target sent COMMAND COMPLETE */
1394 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16));
1395
1396 } else if(CURRENT_SC->SCp.phase & aborted) {
1397 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_ABORT << 16));
1398
1399 } else if(CURRENT_SC->SCp.phase & resetted) {
1400 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_RESET << 16));
1401
1402 } else if(CURRENT_SC->SCp.phase & disconnected) {
1403 /* target sent DISCONNECT */
1404 #if defined(AHA152X_STAT)
1405 HOSTDATA(shpnt)->disconnections++;
1406 #endif
1407 append_SC(&DISCONNECTED_SC, CURRENT_SC);
1408 CURRENT_SC->SCp.phase |= 1 << 16;
1409 CURRENT_SC = NULL;
1410
1411 } else {
1412 done(shpnt, DID_ERROR << 16);
1413 }
1414 #if defined(AHA152X_STAT)
1415 } else {
1416 HOSTDATA(shpnt)->busfree_without_old_command++;
1417 #endif
1418 }
1419
1420 DO_LOCK(flags);
1421
1422 if(DONE_SC) {
1423 #if defined(AHA152X_STAT)
1424 action++;
1425 #endif
1426
1427 if(DONE_SC->SCp.phase & check_condition) {
1428 struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC;
1429 struct aha152x_scdata *sc = SCDATA(cmd);
1430
1431 scsi_eh_restore_cmnd(cmd, &sc->ses);
1432
1433 cmd->SCp.Status = SAM_STAT_CHECK_CONDITION;
1434
1435 HOSTDATA(shpnt)->commands--;
1436 if (!HOSTDATA(shpnt)->commands)
1437 SETPORT(PORTA, 0); /* turn led off */
1438 } else if(DONE_SC->SCp.Status==SAM_STAT_CHECK_CONDITION) {
1439 #if defined(AHA152X_STAT)
1440 HOSTDATA(shpnt)->busfree_with_check_condition++;
1441 #endif
1442
1443 if(!(DONE_SC->SCp.phase & not_issued)) {
1444 struct aha152x_scdata *sc;
1445 Scsi_Cmnd *ptr = DONE_SC;
1446 DONE_SC=NULL;
1447
1448 sc = SCDATA(ptr);
1449 /* It was allocated in aha152x_internal_queue? */
1450 BUG_ON(!sc);
1451 scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0);
1452
1453 DO_UNLOCK(flags);
1454 aha152x_internal_queue(ptr, NULL, check_condition, ptr->scsi_done);
1455 DO_LOCK(flags);
1456 }
1457 }
1458
1459 if(DONE_SC && DONE_SC->scsi_done) {
1460 Scsi_Cmnd *ptr = DONE_SC;
1461 DONE_SC=NULL;
1462
1463 /* turn led off, when no commands are in the driver */
1464 HOSTDATA(shpnt)->commands--;
1465 if (!HOSTDATA(shpnt)->commands)
1466 SETPORT(PORTA, 0); /* turn led off */
1467
1468 if(ptr->scsi_done != reset_done) {
1469 kfree(ptr->host_scribble);
1470 ptr->host_scribble=NULL;
1471 }
1472
1473 DO_UNLOCK(flags);
1474 ptr->scsi_done(ptr);
1475 DO_LOCK(flags);
1476 }
1477
1478 DONE_SC=NULL;
1479 #if defined(AHA152X_STAT)
1480 } else {
1481 HOSTDATA(shpnt)->busfree_without_done_command++;
1482 #endif
1483 }
1484
1485 if(ISSUE_SC)
1486 CURRENT_SC = remove_first_SC(&ISSUE_SC);
1487
1488 DO_UNLOCK(flags);
1489
1490 if(CURRENT_SC) {
1491 #if defined(AHA152X_STAT)
1492 action++;
1493 #endif
1494 CURRENT_SC->SCp.phase |= selecting;
1495
1496 /* clear selection timeout */
1497 SETPORT(SSTAT1, SELTO);
1498
1499 SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id);
1500 SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER);
1501 SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0));
1502 } else {
1503 #if defined(AHA152X_STAT)
1504 HOSTDATA(shpnt)->busfree_without_new_command++;
1505 #endif
1506 SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0);
1507 }
1508
1509 #if defined(AHA152X_STAT)
1510 if(!action)
1511 HOSTDATA(shpnt)->busfree_without_any_action++;
1512 #endif
1513 }
1514
1515 /*
1516 * Selection done (OUT)
1517 * - queue IDENTIFY message and SDTR to selected target for message out
1518 * (ATN asserted automagically via ENAUTOATNO in busfree())
1519 */
1520 static void seldo_run(struct Scsi_Host *shpnt)
1521 {
1522 SETPORT(SCSISIG, 0);
1523 SETPORT(SSTAT1, CLRBUSFREE);
1524 SETPORT(SSTAT1, CLRPHASECHG);
1525
1526 CURRENT_SC->SCp.phase &= ~(selecting|not_issued);
1527
1528 SETPORT(SCSISEQ, 0);
1529
1530 if (TESTLO(SSTAT0, SELDO)) {
1531 scmd_printk(KERN_ERR, CURRENT_SC,
1532 "aha152x: passing bus free condition\n");
1533 done(shpnt, DID_NO_CONNECT << 16);
1534 return;
1535 }
1536
1537 SETPORT(SSTAT0, CLRSELDO);
1538
1539 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1540
1541 if (CURRENT_SC->SCp.phase & aborting) {
1542 ADDMSGO(ABORT);
1543 } else if (CURRENT_SC->SCp.phase & resetting) {
1544 ADDMSGO(BUS_DEVICE_RESET);
1545 } else if (SYNCNEG==0 && SYNCHRONOUS) {
1546 CURRENT_SC->SCp.phase |= syncneg;
1547 MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8);
1548 SYNCNEG=1; /* negotiation in progress */
1549 }
1550
1551 SETRATE(SYNCRATE);
1552 }
1553
1554 /*
1555 * Selection timeout
1556 * - return command to mid-level with failure cause
1557 *
1558 */
1559 static void selto_run(struct Scsi_Host *shpnt)
1560 {
1561 SETPORT(SCSISEQ, 0);
1562 SETPORT(SSTAT1, CLRSELTIMO);
1563
1564 if (!CURRENT_SC)
1565 return;
1566
1567 CURRENT_SC->SCp.phase &= ~selecting;
1568
1569 if (CURRENT_SC->SCp.phase & aborted)
1570 done(shpnt, DID_ABORT << 16);
1571 else if (TESTLO(SSTAT0, SELINGO))
1572 done(shpnt, DID_BUS_BUSY << 16);
1573 else
1574 /* ARBITRATION won, but SELECTION failed */
1575 done(shpnt, DID_NO_CONNECT << 16);
1576 }
1577
1578 /*
1579 * Selection in done
1580 * - put current command back to issue queue
1581 * (reconnection of a disconnected nexus instead
1582 * of successful selection out)
1583 *
1584 */
1585 static void seldi_run(struct Scsi_Host *shpnt)
1586 {
1587 int selid;
1588 int target;
1589 unsigned long flags;
1590
1591 SETPORT(SCSISIG, 0);
1592 SETPORT(SSTAT0, CLRSELDI);
1593 SETPORT(SSTAT1, CLRBUSFREE);
1594 SETPORT(SSTAT1, CLRPHASECHG);
1595
1596 if(CURRENT_SC) {
1597 if(!(CURRENT_SC->SCp.phase & not_issued))
1598 scmd_printk(KERN_ERR, CURRENT_SC,
1599 "command should not have been issued yet\n");
1600
1601 DO_LOCK(flags);
1602 append_SC(&ISSUE_SC, CURRENT_SC);
1603 DO_UNLOCK(flags);
1604
1605 CURRENT_SC = NULL;
1606 }
1607
1608 if (!DISCONNECTED_SC)
1609 return;
1610
1611 RECONN_TARGET=-1;
1612
1613 selid = GETPORT(SELID) & ~(1 << shpnt->this_id);
1614
1615 if (selid==0) {
1616 shost_printk(KERN_INFO, shpnt,
1617 "target id unknown (%02x)\n", selid);
1618 return;
1619 }
1620
1621 for(target=7; !(selid & (1 << target)); target--)
1622 ;
1623
1624 if(selid & ~(1 << target)) {
1625 shost_printk(KERN_INFO, shpnt,
1626 "multiple targets reconnected (%02x)\n", selid);
1627 }
1628
1629
1630 SETPORT(SCSIID, (shpnt->this_id << OID_) | target);
1631 SETPORT(SCSISEQ, 0);
1632
1633 SETRATE(HOSTDATA(shpnt)->syncrate[target]);
1634
1635 RECONN_TARGET=target;
1636 }
1637
1638 /*
1639 * message in phase
1640 * - handle initial message after reconnection to identify
1641 * reconnecting nexus
1642 * - queue command on DISCONNECTED_SC on DISCONNECT message
1643 * - set completed flag on COMMAND COMPLETE
1644 * (other completition code moved to busfree_run)
1645 * - handle response to SDTR
1646 * - clear synchronous transfer agreements on BUS RESET
1647 *
1648 * FIXME: what about SAVE POINTERS, RESTORE POINTERS?
1649 *
1650 */
1651 static void msgi_run(struct Scsi_Host *shpnt)
1652 {
1653 for(;;) {
1654 int sstat1 = GETPORT(SSTAT1);
1655
1656 if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT))
1657 return;
1658
1659 if (TESTLO(SSTAT0, SPIORDY))
1660 return;
1661
1662 ADDMSGI(GETPORT(SCSIDAT));
1663
1664 if(!CURRENT_SC) {
1665 if(LASTSTATE!=seldi) {
1666 shost_printk(KERN_ERR, shpnt,
1667 "message in w/o current command"
1668 " not after reselection\n");
1669 }
1670
1671 /*
1672 * Handle reselection
1673 */
1674 if(!(MSGI(0) & IDENTIFY_BASE)) {
1675 shost_printk(KERN_ERR, shpnt,
1676 "target didn't identify after reselection\n");
1677 continue;
1678 }
1679
1680 CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f);
1681
1682 if (!CURRENT_SC) {
1683 show_queues(shpnt);
1684 shost_printk(KERN_ERR, shpnt,
1685 "no disconnected command"
1686 " for target %d/%d\n",
1687 RECONN_TARGET, MSGI(0) & 0x3f);
1688 continue;
1689 }
1690
1691 CURRENT_SC->SCp.Message = MSGI(0);
1692 CURRENT_SC->SCp.phase &= ~disconnected;
1693
1694 MSGILEN=0;
1695
1696 /* next message if any */
1697 continue;
1698 }
1699
1700 CURRENT_SC->SCp.Message = MSGI(0);
1701
1702 switch (MSGI(0)) {
1703 case DISCONNECT:
1704 if (!RECONNECT)
1705 scmd_printk(KERN_WARNING, CURRENT_SC,
1706 "target was not allowed to disconnect\n");
1707
1708 CURRENT_SC->SCp.phase |= disconnected;
1709 break;
1710
1711 case COMMAND_COMPLETE:
1712 CURRENT_SC->SCp.phase |= completed;
1713 break;
1714
1715 case MESSAGE_REJECT:
1716 if (SYNCNEG==1) {
1717 scmd_printk(KERN_INFO, CURRENT_SC,
1718 "Synchronous Data Transfer Request"
1719 " was rejected\n");
1720 SYNCNEG=2; /* negotiation completed */
1721 } else
1722 scmd_printk(KERN_INFO, CURRENT_SC,
1723 "inbound message (MESSAGE REJECT)\n");
1724 break;
1725
1726 case SAVE_POINTERS:
1727 break;
1728
1729 case RESTORE_POINTERS:
1730 break;
1731
1732 case EXTENDED_MESSAGE:
1733 if(MSGILEN<2 || MSGILEN<MSGI(1)+2) {
1734 /* not yet completed */
1735 continue;
1736 }
1737
1738 switch (MSGI(2)) {
1739 case EXTENDED_SDTR:
1740 {
1741 long ticks;
1742
1743 if (MSGI(1) != 3) {
1744 scmd_printk(KERN_ERR, CURRENT_SC,
1745 "SDTR message length!=3\n");
1746 break;
1747 }
1748
1749 if (!HOSTDATA(shpnt)->synchronous)
1750 break;
1751
1752 printk(INFO_LEAD, CMDINFO(CURRENT_SC));
1753 spi_print_msg(&MSGI(0));
1754 printk("\n");
1755
1756 ticks = (MSGI(3) * 4 + 49) / 50;
1757
1758 if (syncneg) {
1759 /* negotiation in progress */
1760 if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) {
1761 ADDMSGO(MESSAGE_REJECT);
1762 scmd_printk(KERN_INFO,
1763 CURRENT_SC,
1764 "received Synchronous Data Transfer Request invalid - rejected\n");
1765 break;
1766 }
1767
1768 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1769 } else if (ticks <= 9 && MSGI(4) >= 1) {
1770 ADDMSGO(EXTENDED_MESSAGE);
1771 ADDMSGO(3);
1772 ADDMSGO(EXTENDED_SDTR);
1773 if (ticks < 4) {
1774 ticks = 4;
1775 ADDMSGO(50);
1776 } else
1777 ADDMSGO(MSGI(3));
1778
1779 if (MSGI(4) > 8)
1780 MSGI(4) = 8;
1781
1782 ADDMSGO(MSGI(4));
1783
1784 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1785 } else {
1786 /* requested SDTR is too slow, do it asynchronously */
1787 scmd_printk(KERN_INFO,
1788 CURRENT_SC,
1789 "Synchronous Data Transfer Request too slow - Rejecting\n");
1790 ADDMSGO(MESSAGE_REJECT);
1791 }
1792
1793 /* negotiation completed */
1794 SYNCNEG=2;
1795 SETRATE(SYNCRATE);
1796 }
1797 break;
1798
1799 case BUS_DEVICE_RESET:
1800 {
1801 int i;
1802
1803 for(i=0; i<8; i++) {
1804 HOSTDATA(shpnt)->syncrate[i]=0;
1805 HOSTDATA(shpnt)->syncneg[i]=0;
1806 }
1807
1808 }
1809 break;
1810
1811 case EXTENDED_MODIFY_DATA_POINTER:
1812 case EXTENDED_EXTENDED_IDENTIFY:
1813 case EXTENDED_WDTR:
1814 default:
1815 ADDMSGO(MESSAGE_REJECT);
1816 break;
1817 }
1818 break;
1819 }
1820
1821 MSGILEN=0;
1822 }
1823 }
1824
1825 static void msgi_end(struct Scsi_Host *shpnt)
1826 {
1827 if(MSGILEN>0)
1828 scmd_printk(KERN_WARNING, CURRENT_SC,
1829 "target left before message completed (%d)\n",
1830 MSGILEN);
1831
1832 if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE))
1833 SETPORT(SCSISIG, P_MSGI | SIG_ATNO);
1834 }
1835
1836 /*
1837 * message out phase
1838 *
1839 */
1840 static void msgo_init(struct Scsi_Host *shpnt)
1841 {
1842 if(MSGOLEN==0) {
1843 if((CURRENT_SC->SCp.phase & syncneg) && SYNCNEG==2 && SYNCRATE==0) {
1844 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1845 } else {
1846 scmd_printk(KERN_INFO, CURRENT_SC,
1847 "unexpected MESSAGE OUT phase; rejecting\n");
1848 ADDMSGO(MESSAGE_REJECT);
1849 }
1850 }
1851
1852 }
1853
1854 /*
1855 * message out phase
1856 *
1857 */
1858 static void msgo_run(struct Scsi_Host *shpnt)
1859 {
1860 while(MSGO_I<MSGOLEN) {
1861 if (TESTLO(SSTAT0, SPIORDY))
1862 return;
1863
1864 if (MSGO_I==MSGOLEN-1) {
1865 /* Leave MESSAGE OUT after transfer */
1866 SETPORT(SSTAT1, CLRATNO);
1867 }
1868
1869
1870 if (MSGO(MSGO_I) & IDENTIFY_BASE)
1871 CURRENT_SC->SCp.phase |= identified;
1872
1873 if (MSGO(MSGO_I)==ABORT)
1874 CURRENT_SC->SCp.phase |= aborted;
1875
1876 if (MSGO(MSGO_I)==BUS_DEVICE_RESET)
1877 CURRENT_SC->SCp.phase |= resetted;
1878
1879 SETPORT(SCSIDAT, MSGO(MSGO_I++));
1880 }
1881 }
1882
1883 static void msgo_end(struct Scsi_Host *shpnt)
1884 {
1885 if(MSGO_I<MSGOLEN) {
1886 scmd_printk(KERN_ERR, CURRENT_SC,
1887 "message sent incompletely (%d/%d)\n",
1888 MSGO_I, MSGOLEN);
1889 if(SYNCNEG==1) {
1890 scmd_printk(KERN_INFO, CURRENT_SC,
1891 "Synchronous Data Transfer Request was rejected\n");
1892 SYNCNEG=2;
1893 }
1894 }
1895
1896 MSGO_I = 0;
1897 MSGOLEN = 0;
1898 }
1899
1900 /*
1901 * command phase
1902 *
1903 */
1904 static void cmd_init(struct Scsi_Host *shpnt)
1905 {
1906 if (CURRENT_SC->SCp.sent_command) {
1907 scmd_printk(KERN_ERR, CURRENT_SC,
1908 "command already sent\n");
1909 done(shpnt, DID_ERROR << 16);
1910 return;
1911 }
1912
1913 CMD_I=0;
1914 }
1915
1916 /*
1917 * command phase
1918 *
1919 */
1920 static void cmd_run(struct Scsi_Host *shpnt)
1921 {
1922 while(CMD_I<CURRENT_SC->cmd_len) {
1923 if (TESTLO(SSTAT0, SPIORDY))
1924 return;
1925
1926 SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]);
1927 }
1928 }
1929
1930 static void cmd_end(struct Scsi_Host *shpnt)
1931 {
1932 if(CMD_I<CURRENT_SC->cmd_len)
1933 scmd_printk(KERN_ERR, CURRENT_SC,
1934 "command sent incompletely (%d/%d)\n",
1935 CMD_I, CURRENT_SC->cmd_len);
1936 else
1937 CURRENT_SC->SCp.sent_command++;
1938 }
1939
1940 /*
1941 * status phase
1942 *
1943 */
1944 static void status_run(struct Scsi_Host *shpnt)
1945 {
1946 if (TESTLO(SSTAT0, SPIORDY))
1947 return;
1948
1949 CURRENT_SC->SCp.Status = GETPORT(SCSIDAT);
1950
1951 }
1952
1953 /*
1954 * data in phase
1955 *
1956 */
1957 static void datai_init(struct Scsi_Host *shpnt)
1958 {
1959 SETPORT(DMACNTRL0, RSTFIFO);
1960 SETPORT(DMACNTRL0, RSTFIFO|ENDMA);
1961
1962 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
1963 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
1964
1965 SETPORT(SIMODE0, 0);
1966 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE);
1967
1968 DATA_LEN=0;
1969 }
1970
1971 static void datai_run(struct Scsi_Host *shpnt)
1972 {
1973 unsigned long the_time;
1974 int fifodata, data_count;
1975
1976 /*
1977 * loop while the phase persists or the fifos are not empty
1978 *
1979 */
1980 while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) {
1981 /* FIXME: maybe this should be done by setting up
1982 * STCNT to trigger ENSWRAP interrupt, instead of
1983 * polling for DFIFOFULL
1984 */
1985 the_time=jiffies + 100*HZ;
1986 while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time))
1987 barrier();
1988
1989 if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) {
1990 scmd_printk(KERN_ERR, CURRENT_SC, "datai timeout\n");
1991 break;
1992 }
1993
1994 if(TESTHI(DMASTAT, DFIFOFULL)) {
1995 fifodata = 128;
1996 } else {
1997 the_time=jiffies + 100*HZ;
1998 while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time))
1999 barrier();
2000
2001 if(TESTLO(SSTAT2, SEMPTY)) {
2002 scmd_printk(KERN_ERR, CURRENT_SC,
2003 "datai sempty timeout");
2004 break;
2005 }
2006
2007 fifodata = GETPORT(FIFOSTAT);
2008 }
2009
2010 if(CURRENT_SC->SCp.this_residual>0) {
2011 while(fifodata>0 && CURRENT_SC->SCp.this_residual>0) {
2012 data_count = fifodata > CURRENT_SC->SCp.this_residual ?
2013 CURRENT_SC->SCp.this_residual :
2014 fifodata;
2015 fifodata -= data_count;
2016
2017 if (data_count & 1) {
2018 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2019 *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT);
2020 CURRENT_SC->SCp.this_residual--;
2021 DATA_LEN++;
2022 SETPORT(DMACNTRL0, ENDMA);
2023 }
2024
2025 if (data_count > 1) {
2026 data_count >>= 1;
2027 insw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2028 CURRENT_SC->SCp.ptr += 2 * data_count;
2029 CURRENT_SC->SCp.this_residual -= 2 * data_count;
2030 DATA_LEN += 2 * data_count;
2031 }
2032
2033 if (CURRENT_SC->SCp.this_residual == 0 &&
2034 CURRENT_SC->SCp.buffers_residual > 0) {
2035 /* advance to next buffer */
2036 CURRENT_SC->SCp.buffers_residual--;
2037 CURRENT_SC->SCp.buffer++;
2038 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2039 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2040 }
2041 }
2042 } else if (fifodata > 0) {
2043 scmd_printk(KERN_ERR, CURRENT_SC,
2044 "no buffers left for %d(%d) bytes"
2045 " (data overrun!?)\n",
2046 fifodata, GETPORT(FIFOSTAT));
2047 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2048 while(fifodata>0) {
2049 int data;
2050 data=GETPORT(DATAPORT);
2051 fifodata--;
2052 DATA_LEN++;
2053 }
2054 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2055 }
2056 }
2057
2058 if(TESTLO(DMASTAT, INTSTAT) ||
2059 TESTLO(DMASTAT, DFIFOEMP) ||
2060 TESTLO(SSTAT2, SEMPTY) ||
2061 GETPORT(FIFOSTAT)>0) {
2062 /*
2063 * something went wrong, if there's something left in the fifos
2064 * or the phase didn't change
2065 */
2066 scmd_printk(KERN_ERR, CURRENT_SC,
2067 "fifos should be empty and phase should have changed\n");
2068 }
2069
2070 if(DATA_LEN!=GETSTCNT()) {
2071 scmd_printk(KERN_ERR, CURRENT_SC,
2072 "manual transfer count differs from automatic "
2073 "(count=%d;stcnt=%d;diff=%d;fifostat=%d)",
2074 DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN,
2075 GETPORT(FIFOSTAT));
2076 mdelay(10000);
2077 }
2078 }
2079
2080 static void datai_end(struct Scsi_Host *shpnt)
2081 {
2082 CMD_INC_RESID(CURRENT_SC, -GETSTCNT());
2083
2084 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2085 SETPORT(DMACNTRL0, 0);
2086 }
2087
2088 /*
2089 * data out phase
2090 *
2091 */
2092 static void datao_init(struct Scsi_Host *shpnt)
2093 {
2094 SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO);
2095 SETPORT(DMACNTRL0, WRITE_READ | ENDMA);
2096
2097 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2098 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
2099
2100 SETPORT(SIMODE0, 0);
2101 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE );
2102
2103 DATA_LEN = scsi_get_resid(CURRENT_SC);
2104 }
2105
2106 static void datao_run(struct Scsi_Host *shpnt)
2107 {
2108 unsigned long the_time;
2109 int data_count;
2110
2111 /* until phase changes or all data sent */
2112 while(TESTLO(DMASTAT, INTSTAT) && CURRENT_SC->SCp.this_residual>0) {
2113 data_count = 128;
2114 if(data_count > CURRENT_SC->SCp.this_residual)
2115 data_count=CURRENT_SC->SCp.this_residual;
2116
2117 if(TESTLO(DMASTAT, DFIFOEMP)) {
2118 scmd_printk(KERN_ERR, CURRENT_SC,
2119 "datao fifo not empty (%d)",
2120 GETPORT(FIFOSTAT));
2121 break;
2122 }
2123
2124 if(data_count & 1) {
2125 SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT);
2126 SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++);
2127 CURRENT_SC->SCp.this_residual--;
2128 CMD_INC_RESID(CURRENT_SC, -1);
2129 SETPORT(DMACNTRL0,WRITE_READ|ENDMA);
2130 }
2131
2132 if(data_count > 1) {
2133 data_count >>= 1;
2134 outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2135 CURRENT_SC->SCp.ptr += 2 * data_count;
2136 CURRENT_SC->SCp.this_residual -= 2 * data_count;
2137 CMD_INC_RESID(CURRENT_SC, -2 * data_count);
2138 }
2139
2140 if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
2141 /* advance to next buffer */
2142 CURRENT_SC->SCp.buffers_residual--;
2143 CURRENT_SC->SCp.buffer++;
2144 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2145 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2146 }
2147
2148 the_time=jiffies + 100*HZ;
2149 while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time))
2150 barrier();
2151
2152 if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) {
2153 scmd_printk(KERN_ERR, CURRENT_SC, "dataout timeout\n");
2154 break;
2155 }
2156 }
2157 }
2158
2159 static void datao_end(struct Scsi_Host *shpnt)
2160 {
2161 if(TESTLO(DMASTAT, DFIFOEMP)) {
2162 int data_count = (DATA_LEN - scsi_get_resid(CURRENT_SC)) -
2163 GETSTCNT();
2164
2165 CMD_INC_RESID(CURRENT_SC, data_count);
2166
2167 data_count -= CURRENT_SC->SCp.ptr -
2168 SG_ADDRESS(CURRENT_SC->SCp.buffer);
2169 while(data_count>0) {
2170 CURRENT_SC->SCp.buffer--;
2171 CURRENT_SC->SCp.buffers_residual++;
2172 data_count -= CURRENT_SC->SCp.buffer->length;
2173 }
2174 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) -
2175 data_count;
2176 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length +
2177 data_count;
2178 }
2179
2180 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
2181 SETPORT(SXFRCTL0, CH1);
2182
2183 SETPORT(DMACNTRL0, 0);
2184 }
2185
2186 /*
2187 * figure out what state we're in
2188 *
2189 */
2190 static int update_state(struct Scsi_Host *shpnt)
2191 {
2192 int dataphase=0;
2193 unsigned int stat0 = GETPORT(SSTAT0);
2194 unsigned int stat1 = GETPORT(SSTAT1);
2195
2196 PREVSTATE = STATE;
2197 STATE=unknown;
2198
2199 if(stat1 & SCSIRSTI) {
2200 STATE=rsti;
2201 SETPORT(SCSISEQ,0);
2202 SETPORT(SSTAT1,SCSIRSTI);
2203 } else if (stat0 & SELDI && PREVSTATE == busfree) {
2204 STATE=seldi;
2205 } else if(stat0 & SELDO && CURRENT_SC && (CURRENT_SC->SCp.phase & selecting)) {
2206 STATE=seldo;
2207 } else if(stat1 & SELTO) {
2208 STATE=selto;
2209 } else if(stat1 & BUSFREE) {
2210 STATE=busfree;
2211 SETPORT(SSTAT1,BUSFREE);
2212 } else if(stat1 & SCSIPERR) {
2213 STATE=parerr;
2214 SETPORT(SSTAT1,SCSIPERR);
2215 } else if(stat1 & REQINIT) {
2216 switch(GETPORT(SCSISIG) & P_MASK) {
2217 case P_MSGI: STATE=msgi; break;
2218 case P_MSGO: STATE=msgo; break;
2219 case P_DATAO: STATE=datao; break;
2220 case P_DATAI: STATE=datai; break;
2221 case P_STATUS: STATE=status; break;
2222 case P_CMD: STATE=cmd; break;
2223 }
2224 dataphase=1;
2225 }
2226
2227 if((stat0 & SELDI) && STATE!=seldi && !dataphase) {
2228 scmd_printk(KERN_INFO, CURRENT_SC, "reselection missed?");
2229 }
2230
2231 if(STATE!=PREVSTATE) {
2232 LASTSTATE=PREVSTATE;
2233 }
2234
2235 return dataphase;
2236 }
2237
2238 /*
2239 * handle parity error
2240 *
2241 * FIXME: in which phase?
2242 *
2243 */
2244 static void parerr_run(struct Scsi_Host *shpnt)
2245 {
2246 scmd_printk(KERN_ERR, CURRENT_SC, "parity error\n");
2247 done(shpnt, DID_PARITY << 16);
2248 }
2249
2250 /*
2251 * handle reset in
2252 *
2253 */
2254 static void rsti_run(struct Scsi_Host *shpnt)
2255 {
2256 Scsi_Cmnd *ptr;
2257
2258 shost_printk(KERN_NOTICE, shpnt, "scsi reset in\n");
2259
2260 ptr=DISCONNECTED_SC;
2261 while(ptr) {
2262 Scsi_Cmnd *next = SCNEXT(ptr);
2263
2264 if (!ptr->device->soft_reset) {
2265 remove_SC(&DISCONNECTED_SC, ptr);
2266
2267 kfree(ptr->host_scribble);
2268 ptr->host_scribble=NULL;
2269
2270 ptr->result = DID_RESET << 16;
2271 ptr->scsi_done(ptr);
2272 }
2273
2274 ptr = next;
2275 }
2276
2277 if(CURRENT_SC && !CURRENT_SC->device->soft_reset)
2278 done(shpnt, DID_RESET << 16 );
2279 }
2280
2281
2282 /*
2283 * bottom-half handler
2284 *
2285 */
2286 static void is_complete(struct Scsi_Host *shpnt)
2287 {
2288 int dataphase;
2289 unsigned long flags;
2290 int pending;
2291
2292 if(!shpnt)
2293 return;
2294
2295 DO_LOCK(flags);
2296
2297 if( HOSTDATA(shpnt)->service==0 ) {
2298 DO_UNLOCK(flags);
2299 return;
2300 }
2301
2302 HOSTDATA(shpnt)->service = 0;
2303
2304 if(HOSTDATA(shpnt)->in_intr) {
2305 DO_UNLOCK(flags);
2306 /* aha152x_error never returns.. */
2307 aha152x_error(shpnt, "bottom-half already running!?");
2308 }
2309 HOSTDATA(shpnt)->in_intr++;
2310
2311 /*
2312 * loop while there are interrupt conditions pending
2313 *
2314 */
2315 do {
2316 unsigned long start = jiffies;
2317 DO_UNLOCK(flags);
2318
2319 dataphase=update_state(shpnt);
2320
2321 /*
2322 * end previous state
2323 *
2324 */
2325 if(PREVSTATE!=STATE && states[PREVSTATE].end)
2326 states[PREVSTATE].end(shpnt);
2327
2328 /*
2329 * disable SPIO mode if previous phase used it
2330 * and this one doesn't
2331 *
2332 */
2333 if(states[PREVSTATE].spio && !states[STATE].spio) {
2334 SETPORT(SXFRCTL0, CH1);
2335 SETPORT(DMACNTRL0, 0);
2336 if(CURRENT_SC)
2337 CURRENT_SC->SCp.phase &= ~spiordy;
2338 }
2339
2340 /*
2341 * accept current dataphase phase
2342 *
2343 */
2344 if(dataphase) {
2345 SETPORT(SSTAT0, REQINIT);
2346 SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK);
2347 SETPORT(SSTAT1, PHASECHG);
2348 }
2349
2350 /*
2351 * enable SPIO mode if previous didn't use it
2352 * and this one does
2353 *
2354 */
2355 if(!states[PREVSTATE].spio && states[STATE].spio) {
2356 SETPORT(DMACNTRL0, 0);
2357 SETPORT(SXFRCTL0, CH1|SPIOEN);
2358 if(CURRENT_SC)
2359 CURRENT_SC->SCp.phase |= spiordy;
2360 }
2361
2362 /*
2363 * initialize for new state
2364 *
2365 */
2366 if(PREVSTATE!=STATE && states[STATE].init)
2367 states[STATE].init(shpnt);
2368
2369 /*
2370 * handle current state
2371 *
2372 */
2373 if(states[STATE].run)
2374 states[STATE].run(shpnt);
2375 else
2376 scmd_printk(KERN_ERR, CURRENT_SC,
2377 "unexpected state (%x)\n", STATE);
2378
2379 /*
2380 * setup controller to interrupt on
2381 * the next expected condition and
2382 * loop if it's already there
2383 *
2384 */
2385 DO_LOCK(flags);
2386 pending=setup_expected_interrupts(shpnt);
2387 #if defined(AHA152X_STAT)
2388 HOSTDATA(shpnt)->count[STATE]++;
2389 if(PREVSTATE!=STATE)
2390 HOSTDATA(shpnt)->count_trans[STATE]++;
2391 HOSTDATA(shpnt)->time[STATE] += jiffies-start;
2392 #endif
2393
2394 } while(pending);
2395
2396 /*
2397 * enable interrupts and leave bottom-half
2398 *
2399 */
2400 HOSTDATA(shpnt)->in_intr--;
2401 SETBITS(DMACNTRL0, INTEN);
2402 DO_UNLOCK(flags);
2403 }
2404
2405
2406 /*
2407 * Dump the current driver status and panic
2408 */
2409 static void aha152x_error(struct Scsi_Host *shpnt, char *msg)
2410 {
2411 shost_printk(KERN_EMERG, shpnt, "%s\n", msg);
2412 show_queues(shpnt);
2413 panic("aha152x panic\n");
2414 }
2415
2416 /*
2417 * display enabled interrupts
2418 */
2419 static void disp_enintr(struct Scsi_Host *shpnt)
2420 {
2421 int s0, s1;
2422
2423 s0 = GETPORT(SIMODE0);
2424 s1 = GETPORT(SIMODE1);
2425
2426 shost_printk(KERN_DEBUG, shpnt,
2427 "enabled interrupts (%s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n",
2428 (s0 & ENSELDO) ? "ENSELDO " : "",
2429 (s0 & ENSELDI) ? "ENSELDI " : "",
2430 (s0 & ENSELINGO) ? "ENSELINGO " : "",
2431 (s0 & ENSWRAP) ? "ENSWRAP " : "",
2432 (s0 & ENSDONE) ? "ENSDONE " : "",
2433 (s0 & ENSPIORDY) ? "ENSPIORDY " : "",
2434 (s0 & ENDMADONE) ? "ENDMADONE " : "",
2435 (s1 & ENSELTIMO) ? "ENSELTIMO " : "",
2436 (s1 & ENATNTARG) ? "ENATNTARG " : "",
2437 (s1 & ENPHASEMIS) ? "ENPHASEMIS " : "",
2438 (s1 & ENBUSFREE) ? "ENBUSFREE " : "",
2439 (s1 & ENSCSIPERR) ? "ENSCSIPERR " : "",
2440 (s1 & ENPHASECHG) ? "ENPHASECHG " : "",
2441 (s1 & ENREQINIT) ? "ENREQINIT " : "");
2442 }
2443
2444 /*
2445 * Show the command data of a command
2446 */
2447 static void show_command(Scsi_Cmnd *ptr)
2448 {
2449 scsi_print_command(ptr);
2450 scmd_printk(KERN_DEBUG, ptr,
2451 "request_bufflen=%d; resid=%d; "
2452 "phase |%s%s%s%s%s%s%s%s%s; next=0x%p",
2453 scsi_bufflen(ptr), scsi_get_resid(ptr),
2454 (ptr->SCp.phase & not_issued) ? "not issued|" : "",
2455 (ptr->SCp.phase & selecting) ? "selecting|" : "",
2456 (ptr->SCp.phase & identified) ? "identified|" : "",
2457 (ptr->SCp.phase & disconnected) ? "disconnected|" : "",
2458 (ptr->SCp.phase & completed) ? "completed|" : "",
2459 (ptr->SCp.phase & spiordy) ? "spiordy|" : "",
2460 (ptr->SCp.phase & syncneg) ? "syncneg|" : "",
2461 (ptr->SCp.phase & aborted) ? "aborted|" : "",
2462 (ptr->SCp.phase & resetted) ? "resetted|" : "",
2463 (SCDATA(ptr)) ? SCNEXT(ptr) : NULL);
2464 }
2465
2466 /*
2467 * Dump the queued data
2468 */
2469 static void show_queues(struct Scsi_Host *shpnt)
2470 {
2471 Scsi_Cmnd *ptr;
2472 unsigned long flags;
2473
2474 DO_LOCK(flags);
2475 printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n");
2476 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
2477 show_command(ptr);
2478 DO_UNLOCK(flags);
2479
2480 printk(KERN_DEBUG "current_SC:\n");
2481 if (CURRENT_SC)
2482 show_command(CURRENT_SC);
2483 else
2484 printk(KERN_DEBUG "none\n");
2485
2486 printk(KERN_DEBUG "disconnected_SC:\n");
2487 for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL)
2488 show_command(ptr);
2489
2490 disp_enintr(shpnt);
2491 }
2492
2493 #undef SPRINTF
2494 #define SPRINTF(args...) seq_printf(m, ##args)
2495
2496 static void get_command(struct seq_file *m, Scsi_Cmnd * ptr)
2497 {
2498 int i;
2499
2500 SPRINTF("%p: target=%d; lun=%d; cmnd=( ",
2501 ptr, ptr->device->id, (u8)ptr->device->lun);
2502
2503 for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++)
2504 SPRINTF("0x%02x ", ptr->cmnd[i]);
2505
2506 SPRINTF("); resid=%d; residual=%d; buffers=%d; phase |",
2507 scsi_get_resid(ptr), ptr->SCp.this_residual,
2508 ptr->SCp.buffers_residual);
2509
2510 if (ptr->SCp.phase & not_issued)
2511 SPRINTF("not issued|");
2512 if (ptr->SCp.phase & selecting)
2513 SPRINTF("selecting|");
2514 if (ptr->SCp.phase & disconnected)
2515 SPRINTF("disconnected|");
2516 if (ptr->SCp.phase & aborted)
2517 SPRINTF("aborted|");
2518 if (ptr->SCp.phase & identified)
2519 SPRINTF("identified|");
2520 if (ptr->SCp.phase & completed)
2521 SPRINTF("completed|");
2522 if (ptr->SCp.phase & spiordy)
2523 SPRINTF("spiordy|");
2524 if (ptr->SCp.phase & syncneg)
2525 SPRINTF("syncneg|");
2526 SPRINTF("; next=0x%p\n", SCNEXT(ptr));
2527 }
2528
2529 static void get_ports(struct seq_file *m, struct Scsi_Host *shpnt)
2530 {
2531 int s;
2532
2533 SPRINTF("\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name);
2534
2535 s = GETPORT(SCSISEQ);
2536 SPRINTF("SCSISEQ( ");
2537 if (s & TEMODEO)
2538 SPRINTF("TARGET MODE ");
2539 if (s & ENSELO)
2540 SPRINTF("SELO ");
2541 if (s & ENSELI)
2542 SPRINTF("SELI ");
2543 if (s & ENRESELI)
2544 SPRINTF("RESELI ");
2545 if (s & ENAUTOATNO)
2546 SPRINTF("AUTOATNO ");
2547 if (s & ENAUTOATNI)
2548 SPRINTF("AUTOATNI ");
2549 if (s & ENAUTOATNP)
2550 SPRINTF("AUTOATNP ");
2551 if (s & SCSIRSTO)
2552 SPRINTF("SCSIRSTO ");
2553 SPRINTF(");");
2554
2555 SPRINTF(" SCSISIG(");
2556 s = GETPORT(SCSISIG);
2557 switch (s & P_MASK) {
2558 case P_DATAO:
2559 SPRINTF("DATA OUT");
2560 break;
2561 case P_DATAI:
2562 SPRINTF("DATA IN");
2563 break;
2564 case P_CMD:
2565 SPRINTF("COMMAND");
2566 break;
2567 case P_STATUS:
2568 SPRINTF("STATUS");
2569 break;
2570 case P_MSGO:
2571 SPRINTF("MESSAGE OUT");
2572 break;
2573 case P_MSGI:
2574 SPRINTF("MESSAGE IN");
2575 break;
2576 default:
2577 SPRINTF("*invalid*");
2578 break;
2579 }
2580
2581 SPRINTF("); ");
2582
2583 SPRINTF("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");
2584
2585 SPRINTF("SSTAT( ");
2586 s = GETPORT(SSTAT0);
2587 if (s & TARGET)
2588 SPRINTF("TARGET ");
2589 if (s & SELDO)
2590 SPRINTF("SELDO ");
2591 if (s & SELDI)
2592 SPRINTF("SELDI ");
2593 if (s & SELINGO)
2594 SPRINTF("SELINGO ");
2595 if (s & SWRAP)
2596 SPRINTF("SWRAP ");
2597 if (s & SDONE)
2598 SPRINTF("SDONE ");
2599 if (s & SPIORDY)
2600 SPRINTF("SPIORDY ");
2601 if (s & DMADONE)
2602 SPRINTF("DMADONE ");
2603
2604 s = GETPORT(SSTAT1);
2605 if (s & SELTO)
2606 SPRINTF("SELTO ");
2607 if (s & ATNTARG)
2608 SPRINTF("ATNTARG ");
2609 if (s & SCSIRSTI)
2610 SPRINTF("SCSIRSTI ");
2611 if (s & PHASEMIS)
2612 SPRINTF("PHASEMIS ");
2613 if (s & BUSFREE)
2614 SPRINTF("BUSFREE ");
2615 if (s & SCSIPERR)
2616 SPRINTF("SCSIPERR ");
2617 if (s & PHASECHG)
2618 SPRINTF("PHASECHG ");
2619 if (s & REQINIT)
2620 SPRINTF("REQINIT ");
2621 SPRINTF("); ");
2622
2623
2624 SPRINTF("SSTAT( ");
2625
2626 s = GETPORT(SSTAT0) & GETPORT(SIMODE0);
2627
2628 if (s & TARGET)
2629 SPRINTF("TARGET ");
2630 if (s & SELDO)
2631 SPRINTF("SELDO ");
2632 if (s & SELDI)
2633 SPRINTF("SELDI ");
2634 if (s & SELINGO)
2635 SPRINTF("SELINGO ");
2636 if (s & SWRAP)
2637 SPRINTF("SWRAP ");
2638 if (s & SDONE)
2639 SPRINTF("SDONE ");
2640 if (s & SPIORDY)
2641 SPRINTF("SPIORDY ");
2642 if (s & DMADONE)
2643 SPRINTF("DMADONE ");
2644
2645 s = GETPORT(SSTAT1) & GETPORT(SIMODE1);
2646
2647 if (s & SELTO)
2648 SPRINTF("SELTO ");
2649 if (s & ATNTARG)
2650 SPRINTF("ATNTARG ");
2651 if (s & SCSIRSTI)
2652 SPRINTF("SCSIRSTI ");
2653 if (s & PHASEMIS)
2654 SPRINTF("PHASEMIS ");
2655 if (s & BUSFREE)
2656 SPRINTF("BUSFREE ");
2657 if (s & SCSIPERR)
2658 SPRINTF("SCSIPERR ");
2659 if (s & PHASECHG)
2660 SPRINTF("PHASECHG ");
2661 if (s & REQINIT)
2662 SPRINTF("REQINIT ");
2663 SPRINTF("); ");
2664
2665 SPRINTF("SXFRCTL0( ");
2666
2667 s = GETPORT(SXFRCTL0);
2668 if (s & SCSIEN)
2669 SPRINTF("SCSIEN ");
2670 if (s & DMAEN)
2671 SPRINTF("DMAEN ");
2672 if (s & CH1)
2673 SPRINTF("CH1 ");
2674 if (s & CLRSTCNT)
2675 SPRINTF("CLRSTCNT ");
2676 if (s & SPIOEN)
2677 SPRINTF("SPIOEN ");
2678 if (s & CLRCH1)
2679 SPRINTF("CLRCH1 ");
2680 SPRINTF("); ");
2681
2682 SPRINTF("SIGNAL( ");
2683
2684 s = GETPORT(SCSISIG);
2685 if (s & SIG_ATNI)
2686 SPRINTF("ATNI ");
2687 if (s & SIG_SELI)
2688 SPRINTF("SELI ");
2689 if (s & SIG_BSYI)
2690 SPRINTF("BSYI ");
2691 if (s & SIG_REQI)
2692 SPRINTF("REQI ");
2693 if (s & SIG_ACKI)
2694 SPRINTF("ACKI ");
2695 SPRINTF("); ");
2696
2697 SPRINTF("SELID(%02x), ", GETPORT(SELID));
2698
2699 SPRINTF("STCNT(%d), ", GETSTCNT());
2700
2701 SPRINTF("SSTAT2( ");
2702
2703 s = GETPORT(SSTAT2);
2704 if (s & SOFFSET)
2705 SPRINTF("SOFFSET ");
2706 if (s & SEMPTY)
2707 SPRINTF("SEMPTY ");
2708 if (s & SFULL)
2709 SPRINTF("SFULL ");
2710 SPRINTF("); SFCNT (%d); ", s & (SFULL | SFCNT));
2711
2712 s = GETPORT(SSTAT3);
2713 SPRINTF("SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);
2714
2715 SPRINTF("SSTAT4( ");
2716 s = GETPORT(SSTAT4);
2717 if (s & SYNCERR)
2718 SPRINTF("SYNCERR ");
2719 if (s & FWERR)
2720 SPRINTF("FWERR ");
2721 if (s & FRERR)
2722 SPRINTF("FRERR ");
2723 SPRINTF("); ");
2724
2725 SPRINTF("DMACNTRL0( ");
2726 s = GETPORT(DMACNTRL0);
2727 SPRINTF("%s ", s & _8BIT ? "8BIT" : "16BIT");
2728 SPRINTF("%s ", s & DMA ? "DMA" : "PIO");
2729 SPRINTF("%s ", s & WRITE_READ ? "WRITE" : "READ");
2730 if (s & ENDMA)
2731 SPRINTF("ENDMA ");
2732 if (s & INTEN)
2733 SPRINTF("INTEN ");
2734 if (s & RSTFIFO)
2735 SPRINTF("RSTFIFO ");
2736 if (s & SWINT)
2737 SPRINTF("SWINT ");
2738 SPRINTF("); ");
2739
2740 SPRINTF("DMASTAT( ");
2741 s = GETPORT(DMASTAT);
2742 if (s & ATDONE)
2743 SPRINTF("ATDONE ");
2744 if (s & WORDRDY)
2745 SPRINTF("WORDRDY ");
2746 if (s & DFIFOFULL)
2747 SPRINTF("DFIFOFULL ");
2748 if (s & DFIFOEMP)
2749 SPRINTF("DFIFOEMP ");
2750 SPRINTF(")\n");
2751
2752 SPRINTF("enabled interrupts( ");
2753
2754 s = GETPORT(SIMODE0);
2755 if (s & ENSELDO)
2756 SPRINTF("ENSELDO ");
2757 if (s & ENSELDI)
2758 SPRINTF("ENSELDI ");
2759 if (s & ENSELINGO)
2760 SPRINTF("ENSELINGO ");
2761 if (s & ENSWRAP)
2762 SPRINTF("ENSWRAP ");
2763 if (s & ENSDONE)
2764 SPRINTF("ENSDONE ");
2765 if (s & ENSPIORDY)
2766 SPRINTF("ENSPIORDY ");
2767 if (s & ENDMADONE)
2768 SPRINTF("ENDMADONE ");
2769
2770 s = GETPORT(SIMODE1);
2771 if (s & ENSELTIMO)
2772 SPRINTF("ENSELTIMO ");
2773 if (s & ENATNTARG)
2774 SPRINTF("ENATNTARG ");
2775 if (s & ENPHASEMIS)
2776 SPRINTF("ENPHASEMIS ");
2777 if (s & ENBUSFREE)
2778 SPRINTF("ENBUSFREE ");
2779 if (s & ENSCSIPERR)
2780 SPRINTF("ENSCSIPERR ");
2781 if (s & ENPHASECHG)
2782 SPRINTF("ENPHASECHG ");
2783 if (s & ENREQINIT)
2784 SPRINTF("ENREQINIT ");
2785 SPRINTF(")\n");
2786 }
2787
2788 static int aha152x_set_info(struct Scsi_Host *shpnt, char *buffer, int length)
2789 {
2790 if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0)
2791 return -EINVAL;
2792
2793 #if defined(AHA152X_STAT)
2794 if(length>13 && strncmp("reset", buffer+8, 5)==0) {
2795 int i;
2796
2797 HOSTDATA(shpnt)->total_commands=0;
2798 HOSTDATA(shpnt)->disconnections=0;
2799 HOSTDATA(shpnt)->busfree_without_any_action=0;
2800 HOSTDATA(shpnt)->busfree_without_old_command=0;
2801 HOSTDATA(shpnt)->busfree_without_new_command=0;
2802 HOSTDATA(shpnt)->busfree_without_done_command=0;
2803 HOSTDATA(shpnt)->busfree_with_check_condition=0;
2804 for (i = idle; i<maxstate; i++) {
2805 HOSTDATA(shpnt)->count[i]=0;
2806 HOSTDATA(shpnt)->count_trans[i]=0;
2807 HOSTDATA(shpnt)->time[i]=0;
2808 }
2809
2810 shost_printk(KERN_INFO, shpnt, "aha152x: stats reset.\n");
2811
2812 } else
2813 #endif
2814 {
2815 return -EINVAL;
2816 }
2817
2818
2819 return length;
2820 }
2821
2822 static int aha152x_show_info(struct seq_file *m, struct Scsi_Host *shpnt)
2823 {
2824 int i;
2825 Scsi_Cmnd *ptr;
2826 unsigned long flags;
2827
2828 SPRINTF(AHA152X_REVID "\n");
2829
2830 SPRINTF("ioports 0x%04lx to 0x%04lx\n",
2831 shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1);
2832 SPRINTF("interrupt 0x%02x\n", shpnt->irq);
2833 SPRINTF("disconnection/reconnection %s\n",
2834 RECONNECT ? "enabled" : "disabled");
2835 SPRINTF("parity checking %s\n",
2836 PARITY ? "enabled" : "disabled");
2837 SPRINTF("synchronous transfers %s\n",
2838 SYNCHRONOUS ? "enabled" : "disabled");
2839 SPRINTF("%d commands currently queued\n", HOSTDATA(shpnt)->commands);
2840
2841 if(SYNCHRONOUS) {
2842 SPRINTF("synchronously operating targets (tick=50 ns):\n");
2843 for (i = 0; i < 8; i++)
2844 if (HOSTDATA(shpnt)->syncrate[i] & 0x7f)
2845 SPRINTF("target %d: period %dT/%dns; req/ack offset %d\n",
2846 i,
2847 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2),
2848 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50,
2849 HOSTDATA(shpnt)->syncrate[i] & 0x0f);
2850 }
2851 SPRINTF("\nqueue status:\n");
2852 DO_LOCK(flags);
2853 if (ISSUE_SC) {
2854 SPRINTF("not yet issued commands:\n");
2855 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
2856 get_command(m, ptr);
2857 } else
2858 SPRINTF("no not yet issued commands\n");
2859 DO_UNLOCK(flags);
2860
2861 if (CURRENT_SC) {
2862 SPRINTF("current command:\n");
2863 get_command(m, CURRENT_SC);
2864 } else
2865 SPRINTF("no current command\n");
2866
2867 if (DISCONNECTED_SC) {
2868 SPRINTF("disconnected commands:\n");
2869 for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr))
2870 get_command(m, ptr);
2871 } else
2872 SPRINTF("no disconnected commands\n");
2873
2874 get_ports(m, shpnt);
2875
2876 #if defined(AHA152X_STAT)
2877 SPRINTF("statistics:\n"
2878 "total commands: %d\n"
2879 "disconnections: %d\n"
2880 "busfree with check condition: %d\n"
2881 "busfree without old command: %d\n"
2882 "busfree without new command: %d\n"
2883 "busfree without done command: %d\n"
2884 "busfree without any action: %d\n"
2885 "state "
2886 "transitions "
2887 "count "
2888 "time\n",
2889 HOSTDATA(shpnt)->total_commands,
2890 HOSTDATA(shpnt)->disconnections,
2891 HOSTDATA(shpnt)->busfree_with_check_condition,
2892 HOSTDATA(shpnt)->busfree_without_old_command,
2893 HOSTDATA(shpnt)->busfree_without_new_command,
2894 HOSTDATA(shpnt)->busfree_without_done_command,
2895 HOSTDATA(shpnt)->busfree_without_any_action);
2896 for(i=0; i<maxstate; i++) {
2897 SPRINTF("%-10s %-12d %-12d %-12ld\n",
2898 states[i].name,
2899 HOSTDATA(shpnt)->count_trans[i],
2900 HOSTDATA(shpnt)->count[i],
2901 HOSTDATA(shpnt)->time[i]);
2902 }
2903 #endif
2904 return 0;
2905 }
2906
2907 static int aha152x_adjust_queue(struct scsi_device *device)
2908 {
2909 blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH);
2910 return 0;
2911 }
2912
2913 static struct scsi_host_template aha152x_driver_template = {
2914 .module = THIS_MODULE,
2915 .name = AHA152X_REVID,
2916 .proc_name = "aha152x",
2917 .show_info = aha152x_show_info,
2918 .write_info = aha152x_set_info,
2919 .queuecommand = aha152x_queue,
2920 .eh_abort_handler = aha152x_abort,
2921 .eh_device_reset_handler = aha152x_device_reset,
2922 .eh_bus_reset_handler = aha152x_bus_reset,
2923 .eh_host_reset_handler = aha152x_host_reset,
2924 .bios_param = aha152x_biosparam,
2925 .can_queue = 1,
2926 .this_id = 7,
2927 .sg_tablesize = SG_ALL,
2928 .cmd_per_lun = 1,
2929 .use_clustering = DISABLE_CLUSTERING,
2930 .slave_alloc = aha152x_adjust_queue,
2931 };
2932
2933 #if !defined(PCMCIA)
2934 static int setup_count;
2935 static struct aha152x_setup setup[2];
2936
2937 /* possible i/o addresses for the AIC-6260; default first */
2938 static unsigned short ports[] = { 0x340, 0x140 };
2939
2940 #if !defined(SKIP_BIOSTEST)
2941 /* possible locations for the Adaptec BIOS; defaults first */
2942 static unsigned int addresses[] =
2943 {
2944 0xdc000, /* default first */
2945 0xc8000,
2946 0xcc000,
2947 0xd0000,
2948 0xd4000,
2949 0xd8000,
2950 0xe0000,
2951 0xeb800, /* VTech Platinum SMP */
2952 0xf0000,
2953 };
2954
2955 /* signatures for various AIC-6[23]60 based controllers.
2956 The point in detecting signatures is to avoid useless and maybe
2957 harmful probes on ports. I'm not sure that all listed boards pass
2958 auto-configuration. For those which fail the BIOS signature is
2959 obsolete, because user intervention to supply the configuration is
2960 needed anyway. May be an information whether or not the BIOS supports
2961 extended translation could be also useful here. */
2962 static struct signature {
2963 unsigned char *signature;
2964 int sig_offset;
2965 int sig_length;
2966 } signatures[] =
2967 {
2968 { "Adaptec AHA-1520 BIOS", 0x102e, 21 },
2969 /* Adaptec 152x */
2970 { "Adaptec AHA-1520B", 0x000b, 17 },
2971 /* Adaptec 152x rev B */
2972 { "Adaptec AHA-1520B", 0x0026, 17 },
2973 /* Iomega Jaz Jet ISA (AIC6370Q) */
2974 { "Adaptec ASW-B626 BIOS", 0x1029, 21 },
2975 /* on-board controller */
2976 { "Adaptec BIOS: ASW-B626", 0x000f, 22 },
2977 /* on-board controller */
2978 { "Adaptec ASW-B626 S2", 0x2e6c, 19 },
2979 /* on-board controller */
2980 { "Adaptec BIOS:AIC-6360", 0x000c, 21 },
2981 /* on-board controller */
2982 { "ScsiPro SP-360 BIOS", 0x2873, 19 },
2983 /* ScsiPro-Controller */
2984 { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 },
2985 /* Gigabyte Local-Bus-SCSI */
2986 { "Adaptec BIOS:AVA-282X", 0x000c, 21 },
2987 /* Adaptec 282x */
2988 { "Adaptec IBM Dock II SCSI", 0x2edd, 24 },
2989 /* IBM Thinkpad Dock II */
2990 { "Adaptec BIOS:AHA-1532P", 0x001c, 22 },
2991 /* IBM Thinkpad Dock II SCSI */
2992 { "DTC3520A Host Adapter BIOS", 0x318a, 26 },
2993 /* DTC 3520A ISA SCSI */
2994 };
2995 #endif /* !SKIP_BIOSTEST */
2996
2997 /*
2998 * Test, if port_base is valid.
2999 *
3000 */
3001 static int aha152x_porttest(int io_port)
3002 {
3003 int i;
3004
3005 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */
3006 for (i = 0; i < 16; i++)
3007 SETPORT(io_port + O_STACK, i);
3008
3009 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */
3010 for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++)
3011 ;
3012
3013 return (i == 16);
3014 }
3015
3016 static int tc1550_porttest(int io_port)
3017 {
3018 int i;
3019
3020 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */
3021 for (i = 0; i < 16; i++)
3022 SETPORT(io_port + O_STACK, i);
3023
3024 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */
3025 for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++)
3026 ;
3027
3028 return (i == 16);
3029 }
3030
3031
3032 static int checksetup(struct aha152x_setup *setup)
3033 {
3034 int i;
3035 for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++)
3036 ;
3037
3038 if (i == ARRAY_SIZE(ports))
3039 return 0;
3040
3041 if (!request_region(setup->io_port, IO_RANGE, "aha152x")) {
3042 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port);
3043 return 0;
3044 }
3045
3046 if( aha152x_porttest(setup->io_port) ) {
3047 setup->tc1550=0;
3048 } else if( tc1550_porttest(setup->io_port) ) {
3049 setup->tc1550=1;
3050 } else {
3051 release_region(setup->io_port, IO_RANGE);
3052 return 0;
3053 }
3054
3055 release_region(setup->io_port, IO_RANGE);
3056
3057 if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX))
3058 return 0;
3059
3060 if ((setup->scsiid < 0) || (setup->scsiid > 7))
3061 return 0;
3062
3063 if ((setup->reconnect < 0) || (setup->reconnect > 1))
3064 return 0;
3065
3066 if ((setup->parity < 0) || (setup->parity > 1))
3067 return 0;
3068
3069 if ((setup->synchronous < 0) || (setup->synchronous > 1))
3070 return 0;
3071
3072 if ((setup->ext_trans < 0) || (setup->ext_trans > 1))
3073 return 0;
3074
3075
3076 return 1;
3077 }
3078
3079
3080 static int __init aha152x_init(void)
3081 {
3082 int i, j, ok;
3083 #if defined(AUTOCONF)
3084 aha152x_config conf;
3085 #endif
3086 #ifdef __ISAPNP__
3087 struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL};
3088 #endif
3089
3090 if ( setup_count ) {
3091 printk(KERN_INFO "aha152x: processing commandline: ");
3092
3093 for (i = 0; i<setup_count; i++) {
3094 if (!checksetup(&setup[i])) {
3095 printk(KERN_ERR "\naha152x: %s\n", setup[i].conf);
3096 printk(KERN_ERR "aha152x: invalid line\n");
3097 }
3098 }
3099 printk("ok\n");
3100 }
3101
3102 #if defined(SETUP0)
3103 if (setup_count < ARRAY_SIZE(setup)) {
3104 struct aha152x_setup override = SETUP0;
3105
3106 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3107 if (!checksetup(&override)) {
3108 printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3109 override.io_port,
3110 override.irq,
3111 override.scsiid,
3112 override.reconnect,
3113 override.parity,
3114 override.synchronous,
3115 override.delay,
3116 override.ext_trans);
3117 } else
3118 setup[setup_count++] = override;
3119 }
3120 }
3121 #endif
3122
3123 #if defined(SETUP1)
3124 if (setup_count < ARRAY_SIZE(setup)) {
3125 struct aha152x_setup override = SETUP1;
3126
3127 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3128 if (!checksetup(&override)) {
3129 printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3130 override.io_port,
3131 override.irq,
3132 override.scsiid,
3133 override.reconnect,
3134 override.parity,
3135 override.synchronous,
3136 override.delay,
3137 override.ext_trans);
3138 } else
3139 setup[setup_count++] = override;
3140 }
3141 }
3142 #endif
3143
3144 #if defined(MODULE)
3145 if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) {
3146 if(aha152x[0]!=0) {
3147 setup[setup_count].conf = "";
3148 setup[setup_count].io_port = aha152x[0];
3149 setup[setup_count].irq = aha152x[1];
3150 setup[setup_count].scsiid = aha152x[2];
3151 setup[setup_count].reconnect = aha152x[3];
3152 setup[setup_count].parity = aha152x[4];
3153 setup[setup_count].synchronous = aha152x[5];
3154 setup[setup_count].delay = aha152x[6];
3155 setup[setup_count].ext_trans = aha152x[7];
3156 } else if (io[0] != 0 || irq[0] != 0) {
3157 if(io[0]!=0) setup[setup_count].io_port = io[0];
3158 if(irq[0]!=0) setup[setup_count].irq = irq[0];
3159
3160 setup[setup_count].scsiid = scsiid[0];
3161 setup[setup_count].reconnect = reconnect[0];
3162 setup[setup_count].parity = parity[0];
3163 setup[setup_count].synchronous = sync[0];
3164 setup[setup_count].delay = delay[0];
3165 setup[setup_count].ext_trans = exttrans[0];
3166 }
3167
3168 if (checksetup(&setup[setup_count]))
3169 setup_count++;
3170 else
3171 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",
3172 setup[setup_count].io_port,
3173 setup[setup_count].irq,
3174 setup[setup_count].scsiid,
3175 setup[setup_count].reconnect,
3176 setup[setup_count].parity,
3177 setup[setup_count].synchronous,
3178 setup[setup_count].delay,
3179 setup[setup_count].ext_trans);
3180 }
3181
3182 if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) {
3183 if(aha152x1[0]!=0) {
3184 setup[setup_count].conf = "";
3185 setup[setup_count].io_port = aha152x1[0];
3186 setup[setup_count].irq = aha152x1[1];
3187 setup[setup_count].scsiid = aha152x1[2];
3188 setup[setup_count].reconnect = aha152x1[3];
3189 setup[setup_count].parity = aha152x1[4];
3190 setup[setup_count].synchronous = aha152x1[5];
3191 setup[setup_count].delay = aha152x1[6];
3192 setup[setup_count].ext_trans = aha152x1[7];
3193 } else if (io[1] != 0 || irq[1] != 0) {
3194 if(io[1]!=0) setup[setup_count].io_port = io[1];
3195 if(irq[1]!=0) setup[setup_count].irq = irq[1];
3196
3197 setup[setup_count].scsiid = scsiid[1];
3198 setup[setup_count].reconnect = reconnect[1];
3199 setup[setup_count].parity = parity[1];
3200 setup[setup_count].synchronous = sync[1];
3201 setup[setup_count].delay = delay[1];
3202 setup[setup_count].ext_trans = exttrans[1];
3203 }
3204 if (checksetup(&setup[setup_count]))
3205 setup_count++;
3206 else
3207 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",
3208 setup[setup_count].io_port,
3209 setup[setup_count].irq,
3210 setup[setup_count].scsiid,
3211 setup[setup_count].reconnect,
3212 setup[setup_count].parity,
3213 setup[setup_count].synchronous,
3214 setup[setup_count].delay,
3215 setup[setup_count].ext_trans);
3216 }
3217 #endif
3218
3219 #ifdef __ISAPNP__
3220 for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) {
3221 while ( setup_count<ARRAY_SIZE(setup) &&
3222 (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) {
3223 if (pnp_device_attach(dev) < 0)
3224 continue;
3225
3226 if (pnp_activate_dev(dev) < 0) {
3227 pnp_device_detach(dev);
3228 continue;
3229 }
3230
3231 if (!pnp_port_valid(dev, 0)) {
3232 pnp_device_detach(dev);
3233 continue;
3234 }
3235
3236 if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) {
3237 pnp_device_detach(dev);
3238 continue;
3239 }
3240
3241 setup[setup_count].io_port = pnp_port_start(dev, 0);
3242 setup[setup_count].irq = pnp_irq(dev, 0);
3243 setup[setup_count].scsiid = 7;
3244 setup[setup_count].reconnect = 1;
3245 setup[setup_count].parity = 1;
3246 setup[setup_count].synchronous = 1;
3247 setup[setup_count].delay = DELAY_DEFAULT;
3248 setup[setup_count].ext_trans = 0;
3249 #if defined(__ISAPNP__)
3250 pnpdev[setup_count] = dev;
3251 #endif
3252 printk (KERN_INFO
3253 "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n",
3254 setup[setup_count].io_port, setup[setup_count].irq);
3255 setup_count++;
3256 }
3257 }
3258 #endif
3259
3260 #if defined(AUTOCONF)
3261 if (setup_count<ARRAY_SIZE(setup)) {
3262 #if !defined(SKIP_BIOSTEST)
3263 ok = 0;
3264 for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) {
3265 void __iomem *p = ioremap(addresses[i], 0x4000);
3266 if (!p)
3267 continue;
3268 for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++)
3269 ok = check_signature(p + signatures[j].sig_offset,
3270 signatures[j].signature, signatures[j].sig_length);
3271 iounmap(p);
3272 }
3273 if (!ok && setup_count == 0)
3274 return -ENODEV;
3275
3276 printk(KERN_INFO "aha152x: BIOS test: passed, ");
3277 #else
3278 printk(KERN_INFO "aha152x: ");
3279 #endif /* !SKIP_BIOSTEST */
3280
3281 ok = 0;
3282 for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) {
3283 if ((setup_count == 1) && (setup[0].io_port == ports[i]))
3284 continue;
3285
3286 if (!request_region(ports[i], IO_RANGE, "aha152x")) {
3287 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]);
3288 continue;
3289 }
3290
3291 if (aha152x_porttest(ports[i])) {
3292 setup[setup_count].tc1550 = 0;
3293
3294 conf.cf_port =
3295 (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB);
3296 } else if (tc1550_porttest(ports[i])) {
3297 setup[setup_count].tc1550 = 1;
3298
3299 conf.cf_port =
3300 (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB);
3301 } else {
3302 release_region(ports[i], IO_RANGE);
3303 continue;
3304 }
3305
3306 release_region(ports[i], IO_RANGE);
3307
3308 ok++;
3309 setup[setup_count].io_port = ports[i];
3310 setup[setup_count].irq = IRQ_MIN + conf.cf_irq;
3311 setup[setup_count].scsiid = conf.cf_id;
3312 setup[setup_count].reconnect = conf.cf_tardisc;
3313 setup[setup_count].parity = !conf.cf_parity;
3314 setup[setup_count].synchronous = conf.cf_syncneg;
3315 setup[setup_count].delay = DELAY_DEFAULT;
3316 setup[setup_count].ext_trans = 0;
3317 setup_count++;
3318
3319 }
3320
3321 if (ok)
3322 printk("auto configuration: ok, ");
3323 }
3324 #endif
3325
3326 printk("%d controller(s) configured\n", setup_count);
3327
3328 for (i=0; i<setup_count; i++) {
3329 if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) {
3330 struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]);
3331
3332 if( !shpnt ) {
3333 release_region(setup[i].io_port, IO_RANGE);
3334 #if defined(__ISAPNP__)
3335 } else if( pnpdev[i] ) {
3336 HOSTDATA(shpnt)->pnpdev=pnpdev[i];
3337 pnpdev[i]=NULL;
3338 #endif
3339 }
3340 } else {
3341 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port);
3342 }
3343
3344 #if defined(__ISAPNP__)
3345 if( pnpdev[i] )
3346 pnp_device_detach(pnpdev[i]);
3347 #endif
3348 }
3349
3350 return 0;
3351 }
3352
3353 static void __exit aha152x_exit(void)
3354 {
3355 struct aha152x_hostdata *hd, *tmp;
3356
3357 list_for_each_entry_safe(hd, tmp, &aha152x_host_list, host_list) {
3358 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
3359
3360 aha152x_release(shost);
3361 }
3362 }
3363
3364 module_init(aha152x_init);
3365 module_exit(aha152x_exit);
3366
3367 #if !defined(MODULE)
3368 static int __init aha152x_setup(char *str)
3369 {
3370 int ints[10];
3371
3372 get_options(str, ARRAY_SIZE(ints), ints);
3373
3374 if(setup_count>=ARRAY_SIZE(setup)) {
3375 printk(KERN_ERR "aha152x: you can only configure up to two controllers\n");
3376 return 1;
3377 }
3378
3379 setup[setup_count].conf = str;
3380 setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340;
3381 setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11;
3382 setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7;
3383 setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1;
3384 setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1;
3385 setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1;
3386 setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT;
3387 setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0;
3388 if (ints[0] > 8) { /*}*/
3389 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
3390 "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n");
3391 } else {
3392 setup_count++;
3393 return 0;
3394 }
3395
3396 return 1;
3397 }
3398 __setup("aha152x=", aha152x_setup);
3399 #endif
3400
3401 #endif /* !PCMCIA */
Linux kernel - Deliverables
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