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scsi: hisi_sas: use an general way to delay PHY work
[mirror_ubuntu-bionic-kernel.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_hw_array(io, int, ioport, NULL, 0);
335 MODULE_PARM_DESC(io,"base io address of controller");
336
337 static int irq[] = {0, 0};
338 module_param_hw_array(irq, int, irq, 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 * AIC-6260 has a hard reset (MRST signal), but apparently
1144 * one cannot trigger it via software. So live with
1145 * a soft reset; no-one seemed to have cared.
1146 */
1147 static int aha152x_bus_reset_host(struct Scsi_Host *shpnt)
1148 {
1149 unsigned long flags;
1150
1151 DO_LOCK(flags);
1152
1153 free_hard_reset_SCs(shpnt, &ISSUE_SC);
1154 free_hard_reset_SCs(shpnt, &DISCONNECTED_SC);
1155
1156 SETPORT(SCSISEQ, SCSIRSTO);
1157 mdelay(256);
1158 SETPORT(SCSISEQ, 0);
1159 mdelay(DELAY);
1160
1161 setup_expected_interrupts(shpnt);
1162 if(HOSTDATA(shpnt)->commands==0)
1163 SETPORT(PORTA, 0);
1164
1165 DO_UNLOCK(flags);
1166
1167 return SUCCESS;
1168 }
1169
1170 /*
1171 * Reset the bus
1172 *
1173 */
1174 static int aha152x_bus_reset(Scsi_Cmnd *SCpnt)
1175 {
1176 return aha152x_bus_reset_host(SCpnt->device->host);
1177 }
1178
1179 /*
1180 * Restore default values to the AIC-6260 registers and reset the fifos
1181 *
1182 */
1183 static void reset_ports(struct Scsi_Host *shpnt)
1184 {
1185 unsigned long flags;
1186
1187 /* disable interrupts */
1188 SETPORT(DMACNTRL0, RSTFIFO);
1189
1190 SETPORT(SCSISEQ, 0);
1191
1192 SETPORT(SXFRCTL1, 0);
1193 SETPORT(SCSISIG, 0);
1194 SETRATE(0);
1195
1196 /* clear all interrupt conditions */
1197 SETPORT(SSTAT0, 0x7f);
1198 SETPORT(SSTAT1, 0xef);
1199
1200 SETPORT(SSTAT4, SYNCERR | FWERR | FRERR);
1201
1202 SETPORT(DMACNTRL0, 0);
1203 SETPORT(DMACNTRL1, 0);
1204
1205 SETPORT(BRSTCNTRL, 0xf1);
1206
1207 /* clear SCSI fifos and transfer count */
1208 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1209 SETPORT(SXFRCTL0, CH1);
1210
1211 DO_LOCK(flags);
1212 setup_expected_interrupts(shpnt);
1213 DO_UNLOCK(flags);
1214 }
1215
1216 /*
1217 * Reset the host (bus and controller)
1218 *
1219 */
1220 int aha152x_host_reset_host(struct Scsi_Host *shpnt)
1221 {
1222 aha152x_bus_reset_host(shpnt);
1223 reset_ports(shpnt);
1224
1225 return SUCCESS;
1226 }
1227
1228 /*
1229 * Return the "logical geometry"
1230 *
1231 */
1232 static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev,
1233 sector_t capacity, int *info_array)
1234 {
1235 struct Scsi_Host *shpnt = sdev->host;
1236
1237 /* try default translation */
1238 info_array[0] = 64;
1239 info_array[1] = 32;
1240 info_array[2] = (unsigned long)capacity / (64 * 32);
1241
1242 /* for disks >1GB do some guessing */
1243 if (info_array[2] >= 1024) {
1244 int info[3];
1245
1246 /* try to figure out the geometry from the partition table */
1247 if (scsicam_bios_param(bdev, capacity, info) < 0 ||
1248 !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) {
1249 if (EXT_TRANS) {
1250 printk(KERN_NOTICE
1251 "aha152x: unable to verify geometry for disk with >1GB.\n"
1252 " using extended translation.\n");
1253 info_array[0] = 255;
1254 info_array[1] = 63;
1255 info_array[2] = (unsigned long)capacity / (255 * 63);
1256 } else {
1257 printk(KERN_NOTICE
1258 "aha152x: unable to verify geometry for disk with >1GB.\n"
1259 " Using default translation. Please verify yourself.\n"
1260 " Perhaps you need to enable extended translation in the driver.\n"
1261 " See Documentation/scsi/aha152x.txt for details.\n");
1262 }
1263 } else {
1264 info_array[0] = info[0];
1265 info_array[1] = info[1];
1266 info_array[2] = info[2];
1267
1268 if (info[0] == 255 && !EXT_TRANS) {
1269 printk(KERN_NOTICE
1270 "aha152x: current partition table is using extended translation.\n"
1271 " using it also, although it's not explicitly enabled.\n");
1272 }
1273 }
1274 }
1275
1276 return 0;
1277 }
1278
1279 /*
1280 * Internal done function
1281 *
1282 */
1283 static void done(struct Scsi_Host *shpnt, int error)
1284 {
1285 if (CURRENT_SC) {
1286 if(DONE_SC)
1287 scmd_printk(KERN_ERR, CURRENT_SC,
1288 "there's already a completed command %p "
1289 "- will cause abort\n", DONE_SC);
1290
1291 DONE_SC = CURRENT_SC;
1292 CURRENT_SC = NULL;
1293 DONE_SC->result = error;
1294 } else
1295 printk(KERN_ERR "aha152x: done() called outside of command\n");
1296 }
1297
1298 static struct work_struct aha152x_tq;
1299
1300 /*
1301 * Run service completions on the card with interrupts enabled.
1302 *
1303 */
1304 static void run(struct work_struct *work)
1305 {
1306 struct aha152x_hostdata *hd;
1307
1308 list_for_each_entry(hd, &aha152x_host_list, host_list) {
1309 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
1310
1311 is_complete(shost);
1312 }
1313 }
1314
1315 /*
1316 * Interrupt handler
1317 *
1318 */
1319 static irqreturn_t intr(int irqno, void *dev_id)
1320 {
1321 struct Scsi_Host *shpnt = dev_id;
1322 unsigned long flags;
1323 unsigned char rev, dmacntrl0;
1324
1325 /*
1326 * Read a couple of registers that are known to not be all 1's. If
1327 * we read all 1's (-1), that means that either:
1328 *
1329 * a. The host adapter chip has gone bad, and we cannot control it,
1330 * OR
1331 * b. The host adapter is a PCMCIA card that has been ejected
1332 *
1333 * In either case, we cannot do anything with the host adapter at
1334 * this point in time. So just ignore the interrupt and return.
1335 * In the latter case, the interrupt might actually be meant for
1336 * someone else sharing this IRQ, and that driver will handle it.
1337 */
1338 rev = GETPORT(REV);
1339 dmacntrl0 = GETPORT(DMACNTRL0);
1340 if ((rev == 0xFF) && (dmacntrl0 == 0xFF))
1341 return IRQ_NONE;
1342
1343 if( TESTLO(DMASTAT, INTSTAT) )
1344 return IRQ_NONE;
1345
1346 /* no more interrupts from the controller, while we're busy.
1347 INTEN is restored by the BH handler */
1348 CLRBITS(DMACNTRL0, INTEN);
1349
1350 DO_LOCK(flags);
1351 if( HOSTDATA(shpnt)->service==0 ) {
1352 HOSTDATA(shpnt)->service=1;
1353
1354 /* Poke the BH handler */
1355 INIT_WORK(&aha152x_tq, run);
1356 schedule_work(&aha152x_tq);
1357 }
1358 DO_UNLOCK(flags);
1359
1360 return IRQ_HANDLED;
1361 }
1362
1363 /*
1364 * busfree phase
1365 * - handle completition/disconnection/error of current command
1366 * - start selection for next command (if any)
1367 */
1368 static void busfree_run(struct Scsi_Host *shpnt)
1369 {
1370 unsigned long flags;
1371 #if defined(AHA152X_STAT)
1372 int action=0;
1373 #endif
1374
1375 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1376 SETPORT(SXFRCTL0, CH1);
1377
1378 SETPORT(SSTAT1, CLRBUSFREE);
1379
1380 if(CURRENT_SC) {
1381 #if defined(AHA152X_STAT)
1382 action++;
1383 #endif
1384 CURRENT_SC->SCp.phase &= ~syncneg;
1385
1386 if(CURRENT_SC->SCp.phase & completed) {
1387 /* target sent COMMAND COMPLETE */
1388 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16));
1389
1390 } else if(CURRENT_SC->SCp.phase & aborted) {
1391 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_ABORT << 16));
1392
1393 } else if(CURRENT_SC->SCp.phase & resetted) {
1394 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_RESET << 16));
1395
1396 } else if(CURRENT_SC->SCp.phase & disconnected) {
1397 /* target sent DISCONNECT */
1398 #if defined(AHA152X_STAT)
1399 HOSTDATA(shpnt)->disconnections++;
1400 #endif
1401 append_SC(&DISCONNECTED_SC, CURRENT_SC);
1402 CURRENT_SC->SCp.phase |= 1 << 16;
1403 CURRENT_SC = NULL;
1404
1405 } else {
1406 done(shpnt, DID_ERROR << 16);
1407 }
1408 #if defined(AHA152X_STAT)
1409 } else {
1410 HOSTDATA(shpnt)->busfree_without_old_command++;
1411 #endif
1412 }
1413
1414 DO_LOCK(flags);
1415
1416 if(DONE_SC) {
1417 #if defined(AHA152X_STAT)
1418 action++;
1419 #endif
1420
1421 if(DONE_SC->SCp.phase & check_condition) {
1422 struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC;
1423 struct aha152x_scdata *sc = SCDATA(cmd);
1424
1425 scsi_eh_restore_cmnd(cmd, &sc->ses);
1426
1427 cmd->SCp.Status = SAM_STAT_CHECK_CONDITION;
1428
1429 HOSTDATA(shpnt)->commands--;
1430 if (!HOSTDATA(shpnt)->commands)
1431 SETPORT(PORTA, 0); /* turn led off */
1432 } else if(DONE_SC->SCp.Status==SAM_STAT_CHECK_CONDITION) {
1433 #if defined(AHA152X_STAT)
1434 HOSTDATA(shpnt)->busfree_with_check_condition++;
1435 #endif
1436
1437 if(!(DONE_SC->SCp.phase & not_issued)) {
1438 struct aha152x_scdata *sc;
1439 Scsi_Cmnd *ptr = DONE_SC;
1440 DONE_SC=NULL;
1441
1442 sc = SCDATA(ptr);
1443 /* It was allocated in aha152x_internal_queue? */
1444 BUG_ON(!sc);
1445 scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0);
1446
1447 DO_UNLOCK(flags);
1448 aha152x_internal_queue(ptr, NULL, check_condition, ptr->scsi_done);
1449 DO_LOCK(flags);
1450 }
1451 }
1452
1453 if(DONE_SC && DONE_SC->scsi_done) {
1454 Scsi_Cmnd *ptr = DONE_SC;
1455 DONE_SC=NULL;
1456
1457 /* turn led off, when no commands are in the driver */
1458 HOSTDATA(shpnt)->commands--;
1459 if (!HOSTDATA(shpnt)->commands)
1460 SETPORT(PORTA, 0); /* turn led off */
1461
1462 if(ptr->scsi_done != reset_done) {
1463 kfree(ptr->host_scribble);
1464 ptr->host_scribble=NULL;
1465 }
1466
1467 DO_UNLOCK(flags);
1468 ptr->scsi_done(ptr);
1469 DO_LOCK(flags);
1470 }
1471
1472 DONE_SC=NULL;
1473 #if defined(AHA152X_STAT)
1474 } else {
1475 HOSTDATA(shpnt)->busfree_without_done_command++;
1476 #endif
1477 }
1478
1479 if(ISSUE_SC)
1480 CURRENT_SC = remove_first_SC(&ISSUE_SC);
1481
1482 DO_UNLOCK(flags);
1483
1484 if(CURRENT_SC) {
1485 #if defined(AHA152X_STAT)
1486 action++;
1487 #endif
1488 CURRENT_SC->SCp.phase |= selecting;
1489
1490 /* clear selection timeout */
1491 SETPORT(SSTAT1, SELTO);
1492
1493 SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id);
1494 SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER);
1495 SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0));
1496 } else {
1497 #if defined(AHA152X_STAT)
1498 HOSTDATA(shpnt)->busfree_without_new_command++;
1499 #endif
1500 SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0);
1501 }
1502
1503 #if defined(AHA152X_STAT)
1504 if(!action)
1505 HOSTDATA(shpnt)->busfree_without_any_action++;
1506 #endif
1507 }
1508
1509 /*
1510 * Selection done (OUT)
1511 * - queue IDENTIFY message and SDTR to selected target for message out
1512 * (ATN asserted automagically via ENAUTOATNO in busfree())
1513 */
1514 static void seldo_run(struct Scsi_Host *shpnt)
1515 {
1516 SETPORT(SCSISIG, 0);
1517 SETPORT(SSTAT1, CLRBUSFREE);
1518 SETPORT(SSTAT1, CLRPHASECHG);
1519
1520 CURRENT_SC->SCp.phase &= ~(selecting|not_issued);
1521
1522 SETPORT(SCSISEQ, 0);
1523
1524 if (TESTLO(SSTAT0, SELDO)) {
1525 scmd_printk(KERN_ERR, CURRENT_SC,
1526 "aha152x: passing bus free condition\n");
1527 done(shpnt, DID_NO_CONNECT << 16);
1528 return;
1529 }
1530
1531 SETPORT(SSTAT0, CLRSELDO);
1532
1533 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1534
1535 if (CURRENT_SC->SCp.phase & aborting) {
1536 ADDMSGO(ABORT);
1537 } else if (CURRENT_SC->SCp.phase & resetting) {
1538 ADDMSGO(BUS_DEVICE_RESET);
1539 } else if (SYNCNEG==0 && SYNCHRONOUS) {
1540 CURRENT_SC->SCp.phase |= syncneg;
1541 MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8);
1542 SYNCNEG=1; /* negotiation in progress */
1543 }
1544
1545 SETRATE(SYNCRATE);
1546 }
1547
1548 /*
1549 * Selection timeout
1550 * - return command to mid-level with failure cause
1551 *
1552 */
1553 static void selto_run(struct Scsi_Host *shpnt)
1554 {
1555 SETPORT(SCSISEQ, 0);
1556 SETPORT(SSTAT1, CLRSELTIMO);
1557
1558 if (!CURRENT_SC)
1559 return;
1560
1561 CURRENT_SC->SCp.phase &= ~selecting;
1562
1563 if (CURRENT_SC->SCp.phase & aborted)
1564 done(shpnt, DID_ABORT << 16);
1565 else if (TESTLO(SSTAT0, SELINGO))
1566 done(shpnt, DID_BUS_BUSY << 16);
1567 else
1568 /* ARBITRATION won, but SELECTION failed */
1569 done(shpnt, DID_NO_CONNECT << 16);
1570 }
1571
1572 /*
1573 * Selection in done
1574 * - put current command back to issue queue
1575 * (reconnection of a disconnected nexus instead
1576 * of successful selection out)
1577 *
1578 */
1579 static void seldi_run(struct Scsi_Host *shpnt)
1580 {
1581 int selid;
1582 int target;
1583 unsigned long flags;
1584
1585 SETPORT(SCSISIG, 0);
1586 SETPORT(SSTAT0, CLRSELDI);
1587 SETPORT(SSTAT1, CLRBUSFREE);
1588 SETPORT(SSTAT1, CLRPHASECHG);
1589
1590 if(CURRENT_SC) {
1591 if(!(CURRENT_SC->SCp.phase & not_issued))
1592 scmd_printk(KERN_ERR, CURRENT_SC,
1593 "command should not have been issued yet\n");
1594
1595 DO_LOCK(flags);
1596 append_SC(&ISSUE_SC, CURRENT_SC);
1597 DO_UNLOCK(flags);
1598
1599 CURRENT_SC = NULL;
1600 }
1601
1602 if (!DISCONNECTED_SC)
1603 return;
1604
1605 RECONN_TARGET=-1;
1606
1607 selid = GETPORT(SELID) & ~(1 << shpnt->this_id);
1608
1609 if (selid==0) {
1610 shost_printk(KERN_INFO, shpnt,
1611 "target id unknown (%02x)\n", selid);
1612 return;
1613 }
1614
1615 for(target=7; !(selid & (1 << target)); target--)
1616 ;
1617
1618 if(selid & ~(1 << target)) {
1619 shost_printk(KERN_INFO, shpnt,
1620 "multiple targets reconnected (%02x)\n", selid);
1621 }
1622
1623
1624 SETPORT(SCSIID, (shpnt->this_id << OID_) | target);
1625 SETPORT(SCSISEQ, 0);
1626
1627 SETRATE(HOSTDATA(shpnt)->syncrate[target]);
1628
1629 RECONN_TARGET=target;
1630 }
1631
1632 /*
1633 * message in phase
1634 * - handle initial message after reconnection to identify
1635 * reconnecting nexus
1636 * - queue command on DISCONNECTED_SC on DISCONNECT message
1637 * - set completed flag on COMMAND COMPLETE
1638 * (other completition code moved to busfree_run)
1639 * - handle response to SDTR
1640 * - clear synchronous transfer agreements on BUS RESET
1641 *
1642 * FIXME: what about SAVE POINTERS, RESTORE POINTERS?
1643 *
1644 */
1645 static void msgi_run(struct Scsi_Host *shpnt)
1646 {
1647 for(;;) {
1648 int sstat1 = GETPORT(SSTAT1);
1649
1650 if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT))
1651 return;
1652
1653 if (TESTLO(SSTAT0, SPIORDY))
1654 return;
1655
1656 ADDMSGI(GETPORT(SCSIDAT));
1657
1658 if(!CURRENT_SC) {
1659 if(LASTSTATE!=seldi) {
1660 shost_printk(KERN_ERR, shpnt,
1661 "message in w/o current command"
1662 " not after reselection\n");
1663 }
1664
1665 /*
1666 * Handle reselection
1667 */
1668 if(!(MSGI(0) & IDENTIFY_BASE)) {
1669 shost_printk(KERN_ERR, shpnt,
1670 "target didn't identify after reselection\n");
1671 continue;
1672 }
1673
1674 CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f);
1675
1676 if (!CURRENT_SC) {
1677 show_queues(shpnt);
1678 shost_printk(KERN_ERR, shpnt,
1679 "no disconnected command"
1680 " for target %d/%d\n",
1681 RECONN_TARGET, MSGI(0) & 0x3f);
1682 continue;
1683 }
1684
1685 CURRENT_SC->SCp.Message = MSGI(0);
1686 CURRENT_SC->SCp.phase &= ~disconnected;
1687
1688 MSGILEN=0;
1689
1690 /* next message if any */
1691 continue;
1692 }
1693
1694 CURRENT_SC->SCp.Message = MSGI(0);
1695
1696 switch (MSGI(0)) {
1697 case DISCONNECT:
1698 if (!RECONNECT)
1699 scmd_printk(KERN_WARNING, CURRENT_SC,
1700 "target was not allowed to disconnect\n");
1701
1702 CURRENT_SC->SCp.phase |= disconnected;
1703 break;
1704
1705 case COMMAND_COMPLETE:
1706 CURRENT_SC->SCp.phase |= completed;
1707 break;
1708
1709 case MESSAGE_REJECT:
1710 if (SYNCNEG==1) {
1711 scmd_printk(KERN_INFO, CURRENT_SC,
1712 "Synchronous Data Transfer Request"
1713 " was rejected\n");
1714 SYNCNEG=2; /* negotiation completed */
1715 } else
1716 scmd_printk(KERN_INFO, CURRENT_SC,
1717 "inbound message (MESSAGE REJECT)\n");
1718 break;
1719
1720 case SAVE_POINTERS:
1721 break;
1722
1723 case RESTORE_POINTERS:
1724 break;
1725
1726 case EXTENDED_MESSAGE:
1727 if(MSGILEN<2 || MSGILEN<MSGI(1)+2) {
1728 /* not yet completed */
1729 continue;
1730 }
1731
1732 switch (MSGI(2)) {
1733 case EXTENDED_SDTR:
1734 {
1735 long ticks;
1736
1737 if (MSGI(1) != 3) {
1738 scmd_printk(KERN_ERR, CURRENT_SC,
1739 "SDTR message length!=3\n");
1740 break;
1741 }
1742
1743 if (!HOSTDATA(shpnt)->synchronous)
1744 break;
1745
1746 printk(INFO_LEAD, CMDINFO(CURRENT_SC));
1747 spi_print_msg(&MSGI(0));
1748 printk("\n");
1749
1750 ticks = (MSGI(3) * 4 + 49) / 50;
1751
1752 if (syncneg) {
1753 /* negotiation in progress */
1754 if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) {
1755 ADDMSGO(MESSAGE_REJECT);
1756 scmd_printk(KERN_INFO,
1757 CURRENT_SC,
1758 "received Synchronous Data Transfer Request invalid - rejected\n");
1759 break;
1760 }
1761
1762 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1763 } else if (ticks <= 9 && MSGI(4) >= 1) {
1764 ADDMSGO(EXTENDED_MESSAGE);
1765 ADDMSGO(3);
1766 ADDMSGO(EXTENDED_SDTR);
1767 if (ticks < 4) {
1768 ticks = 4;
1769 ADDMSGO(50);
1770 } else
1771 ADDMSGO(MSGI(3));
1772
1773 if (MSGI(4) > 8)
1774 MSGI(4) = 8;
1775
1776 ADDMSGO(MSGI(4));
1777
1778 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1779 } else {
1780 /* requested SDTR is too slow, do it asynchronously */
1781 scmd_printk(KERN_INFO,
1782 CURRENT_SC,
1783 "Synchronous Data Transfer Request too slow - Rejecting\n");
1784 ADDMSGO(MESSAGE_REJECT);
1785 }
1786
1787 /* negotiation completed */
1788 SYNCNEG=2;
1789 SETRATE(SYNCRATE);
1790 }
1791 break;
1792
1793 case BUS_DEVICE_RESET:
1794 {
1795 int i;
1796
1797 for(i=0; i<8; i++) {
1798 HOSTDATA(shpnt)->syncrate[i]=0;
1799 HOSTDATA(shpnt)->syncneg[i]=0;
1800 }
1801
1802 }
1803 break;
1804
1805 case EXTENDED_MODIFY_DATA_POINTER:
1806 case EXTENDED_EXTENDED_IDENTIFY:
1807 case EXTENDED_WDTR:
1808 default:
1809 ADDMSGO(MESSAGE_REJECT);
1810 break;
1811 }
1812 break;
1813 }
1814
1815 MSGILEN=0;
1816 }
1817 }
1818
1819 static void msgi_end(struct Scsi_Host *shpnt)
1820 {
1821 if(MSGILEN>0)
1822 scmd_printk(KERN_WARNING, CURRENT_SC,
1823 "target left before message completed (%d)\n",
1824 MSGILEN);
1825
1826 if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE))
1827 SETPORT(SCSISIG, P_MSGI | SIG_ATNO);
1828 }
1829
1830 /*
1831 * message out phase
1832 *
1833 */
1834 static void msgo_init(struct Scsi_Host *shpnt)
1835 {
1836 if(MSGOLEN==0) {
1837 if((CURRENT_SC->SCp.phase & syncneg) && SYNCNEG==2 && SYNCRATE==0) {
1838 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1839 } else {
1840 scmd_printk(KERN_INFO, CURRENT_SC,
1841 "unexpected MESSAGE OUT phase; rejecting\n");
1842 ADDMSGO(MESSAGE_REJECT);
1843 }
1844 }
1845
1846 }
1847
1848 /*
1849 * message out phase
1850 *
1851 */
1852 static void msgo_run(struct Scsi_Host *shpnt)
1853 {
1854 while(MSGO_I<MSGOLEN) {
1855 if (TESTLO(SSTAT0, SPIORDY))
1856 return;
1857
1858 if (MSGO_I==MSGOLEN-1) {
1859 /* Leave MESSAGE OUT after transfer */
1860 SETPORT(SSTAT1, CLRATNO);
1861 }
1862
1863
1864 if (MSGO(MSGO_I) & IDENTIFY_BASE)
1865 CURRENT_SC->SCp.phase |= identified;
1866
1867 if (MSGO(MSGO_I)==ABORT)
1868 CURRENT_SC->SCp.phase |= aborted;
1869
1870 if (MSGO(MSGO_I)==BUS_DEVICE_RESET)
1871 CURRENT_SC->SCp.phase |= resetted;
1872
1873 SETPORT(SCSIDAT, MSGO(MSGO_I++));
1874 }
1875 }
1876
1877 static void msgo_end(struct Scsi_Host *shpnt)
1878 {
1879 if(MSGO_I<MSGOLEN) {
1880 scmd_printk(KERN_ERR, CURRENT_SC,
1881 "message sent incompletely (%d/%d)\n",
1882 MSGO_I, MSGOLEN);
1883 if(SYNCNEG==1) {
1884 scmd_printk(KERN_INFO, CURRENT_SC,
1885 "Synchronous Data Transfer Request was rejected\n");
1886 SYNCNEG=2;
1887 }
1888 }
1889
1890 MSGO_I = 0;
1891 MSGOLEN = 0;
1892 }
1893
1894 /*
1895 * command phase
1896 *
1897 */
1898 static void cmd_init(struct Scsi_Host *shpnt)
1899 {
1900 if (CURRENT_SC->SCp.sent_command) {
1901 scmd_printk(KERN_ERR, CURRENT_SC,
1902 "command already sent\n");
1903 done(shpnt, DID_ERROR << 16);
1904 return;
1905 }
1906
1907 CMD_I=0;
1908 }
1909
1910 /*
1911 * command phase
1912 *
1913 */
1914 static void cmd_run(struct Scsi_Host *shpnt)
1915 {
1916 while(CMD_I<CURRENT_SC->cmd_len) {
1917 if (TESTLO(SSTAT0, SPIORDY))
1918 return;
1919
1920 SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]);
1921 }
1922 }
1923
1924 static void cmd_end(struct Scsi_Host *shpnt)
1925 {
1926 if(CMD_I<CURRENT_SC->cmd_len)
1927 scmd_printk(KERN_ERR, CURRENT_SC,
1928 "command sent incompletely (%d/%d)\n",
1929 CMD_I, CURRENT_SC->cmd_len);
1930 else
1931 CURRENT_SC->SCp.sent_command++;
1932 }
1933
1934 /*
1935 * status phase
1936 *
1937 */
1938 static void status_run(struct Scsi_Host *shpnt)
1939 {
1940 if (TESTLO(SSTAT0, SPIORDY))
1941 return;
1942
1943 CURRENT_SC->SCp.Status = GETPORT(SCSIDAT);
1944
1945 }
1946
1947 /*
1948 * data in phase
1949 *
1950 */
1951 static void datai_init(struct Scsi_Host *shpnt)
1952 {
1953 SETPORT(DMACNTRL0, RSTFIFO);
1954 SETPORT(DMACNTRL0, RSTFIFO|ENDMA);
1955
1956 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
1957 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
1958
1959 SETPORT(SIMODE0, 0);
1960 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE);
1961
1962 DATA_LEN=0;
1963 }
1964
1965 static void datai_run(struct Scsi_Host *shpnt)
1966 {
1967 unsigned long the_time;
1968 int fifodata, data_count;
1969
1970 /*
1971 * loop while the phase persists or the fifos are not empty
1972 *
1973 */
1974 while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) {
1975 /* FIXME: maybe this should be done by setting up
1976 * STCNT to trigger ENSWRAP interrupt, instead of
1977 * polling for DFIFOFULL
1978 */
1979 the_time=jiffies + 100*HZ;
1980 while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time))
1981 barrier();
1982
1983 if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) {
1984 scmd_printk(KERN_ERR, CURRENT_SC, "datai timeout\n");
1985 break;
1986 }
1987
1988 if(TESTHI(DMASTAT, DFIFOFULL)) {
1989 fifodata = 128;
1990 } else {
1991 the_time=jiffies + 100*HZ;
1992 while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time))
1993 barrier();
1994
1995 if(TESTLO(SSTAT2, SEMPTY)) {
1996 scmd_printk(KERN_ERR, CURRENT_SC,
1997 "datai sempty timeout");
1998 break;
1999 }
2000
2001 fifodata = GETPORT(FIFOSTAT);
2002 }
2003
2004 if(CURRENT_SC->SCp.this_residual>0) {
2005 while(fifodata>0 && CURRENT_SC->SCp.this_residual>0) {
2006 data_count = fifodata > CURRENT_SC->SCp.this_residual ?
2007 CURRENT_SC->SCp.this_residual :
2008 fifodata;
2009 fifodata -= data_count;
2010
2011 if (data_count & 1) {
2012 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2013 *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT);
2014 CURRENT_SC->SCp.this_residual--;
2015 DATA_LEN++;
2016 SETPORT(DMACNTRL0, ENDMA);
2017 }
2018
2019 if (data_count > 1) {
2020 data_count >>= 1;
2021 insw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2022 CURRENT_SC->SCp.ptr += 2 * data_count;
2023 CURRENT_SC->SCp.this_residual -= 2 * data_count;
2024 DATA_LEN += 2 * data_count;
2025 }
2026
2027 if (CURRENT_SC->SCp.this_residual == 0 &&
2028 CURRENT_SC->SCp.buffers_residual > 0) {
2029 /* advance to next buffer */
2030 CURRENT_SC->SCp.buffers_residual--;
2031 CURRENT_SC->SCp.buffer++;
2032 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2033 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2034 }
2035 }
2036 } else if (fifodata > 0) {
2037 scmd_printk(KERN_ERR, CURRENT_SC,
2038 "no buffers left for %d(%d) bytes"
2039 " (data overrun!?)\n",
2040 fifodata, GETPORT(FIFOSTAT));
2041 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2042 while(fifodata>0) {
2043 int data;
2044 data=GETPORT(DATAPORT);
2045 fifodata--;
2046 DATA_LEN++;
2047 }
2048 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2049 }
2050 }
2051
2052 if(TESTLO(DMASTAT, INTSTAT) ||
2053 TESTLO(DMASTAT, DFIFOEMP) ||
2054 TESTLO(SSTAT2, SEMPTY) ||
2055 GETPORT(FIFOSTAT)>0) {
2056 /*
2057 * something went wrong, if there's something left in the fifos
2058 * or the phase didn't change
2059 */
2060 scmd_printk(KERN_ERR, CURRENT_SC,
2061 "fifos should be empty and phase should have changed\n");
2062 }
2063
2064 if(DATA_LEN!=GETSTCNT()) {
2065 scmd_printk(KERN_ERR, CURRENT_SC,
2066 "manual transfer count differs from automatic "
2067 "(count=%d;stcnt=%d;diff=%d;fifostat=%d)",
2068 DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN,
2069 GETPORT(FIFOSTAT));
2070 mdelay(10000);
2071 }
2072 }
2073
2074 static void datai_end(struct Scsi_Host *shpnt)
2075 {
2076 CMD_INC_RESID(CURRENT_SC, -GETSTCNT());
2077
2078 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2079 SETPORT(DMACNTRL0, 0);
2080 }
2081
2082 /*
2083 * data out phase
2084 *
2085 */
2086 static void datao_init(struct Scsi_Host *shpnt)
2087 {
2088 SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO);
2089 SETPORT(DMACNTRL0, WRITE_READ | ENDMA);
2090
2091 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2092 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
2093
2094 SETPORT(SIMODE0, 0);
2095 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE );
2096
2097 DATA_LEN = scsi_get_resid(CURRENT_SC);
2098 }
2099
2100 static void datao_run(struct Scsi_Host *shpnt)
2101 {
2102 unsigned long the_time;
2103 int data_count;
2104
2105 /* until phase changes or all data sent */
2106 while(TESTLO(DMASTAT, INTSTAT) && CURRENT_SC->SCp.this_residual>0) {
2107 data_count = 128;
2108 if(data_count > CURRENT_SC->SCp.this_residual)
2109 data_count=CURRENT_SC->SCp.this_residual;
2110
2111 if(TESTLO(DMASTAT, DFIFOEMP)) {
2112 scmd_printk(KERN_ERR, CURRENT_SC,
2113 "datao fifo not empty (%d)",
2114 GETPORT(FIFOSTAT));
2115 break;
2116 }
2117
2118 if(data_count & 1) {
2119 SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT);
2120 SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++);
2121 CURRENT_SC->SCp.this_residual--;
2122 CMD_INC_RESID(CURRENT_SC, -1);
2123 SETPORT(DMACNTRL0,WRITE_READ|ENDMA);
2124 }
2125
2126 if(data_count > 1) {
2127 data_count >>= 1;
2128 outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2129 CURRENT_SC->SCp.ptr += 2 * data_count;
2130 CURRENT_SC->SCp.this_residual -= 2 * data_count;
2131 CMD_INC_RESID(CURRENT_SC, -2 * data_count);
2132 }
2133
2134 if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
2135 /* advance to next buffer */
2136 CURRENT_SC->SCp.buffers_residual--;
2137 CURRENT_SC->SCp.buffer++;
2138 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2139 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2140 }
2141
2142 the_time=jiffies + 100*HZ;
2143 while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time))
2144 barrier();
2145
2146 if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) {
2147 scmd_printk(KERN_ERR, CURRENT_SC, "dataout timeout\n");
2148 break;
2149 }
2150 }
2151 }
2152
2153 static void datao_end(struct Scsi_Host *shpnt)
2154 {
2155 if(TESTLO(DMASTAT, DFIFOEMP)) {
2156 int data_count = (DATA_LEN - scsi_get_resid(CURRENT_SC)) -
2157 GETSTCNT();
2158
2159 CMD_INC_RESID(CURRENT_SC, data_count);
2160
2161 data_count -= CURRENT_SC->SCp.ptr -
2162 SG_ADDRESS(CURRENT_SC->SCp.buffer);
2163 while(data_count>0) {
2164 CURRENT_SC->SCp.buffer--;
2165 CURRENT_SC->SCp.buffers_residual++;
2166 data_count -= CURRENT_SC->SCp.buffer->length;
2167 }
2168 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) -
2169 data_count;
2170 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length +
2171 data_count;
2172 }
2173
2174 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
2175 SETPORT(SXFRCTL0, CH1);
2176
2177 SETPORT(DMACNTRL0, 0);
2178 }
2179
2180 /*
2181 * figure out what state we're in
2182 *
2183 */
2184 static int update_state(struct Scsi_Host *shpnt)
2185 {
2186 int dataphase=0;
2187 unsigned int stat0 = GETPORT(SSTAT0);
2188 unsigned int stat1 = GETPORT(SSTAT1);
2189
2190 PREVSTATE = STATE;
2191 STATE=unknown;
2192
2193 if(stat1 & SCSIRSTI) {
2194 STATE=rsti;
2195 SETPORT(SCSISEQ,0);
2196 SETPORT(SSTAT1,SCSIRSTI);
2197 } else if (stat0 & SELDI && PREVSTATE == busfree) {
2198 STATE=seldi;
2199 } else if(stat0 & SELDO && CURRENT_SC && (CURRENT_SC->SCp.phase & selecting)) {
2200 STATE=seldo;
2201 } else if(stat1 & SELTO) {
2202 STATE=selto;
2203 } else if(stat1 & BUSFREE) {
2204 STATE=busfree;
2205 SETPORT(SSTAT1,BUSFREE);
2206 } else if(stat1 & SCSIPERR) {
2207 STATE=parerr;
2208 SETPORT(SSTAT1,SCSIPERR);
2209 } else if(stat1 & REQINIT) {
2210 switch(GETPORT(SCSISIG) & P_MASK) {
2211 case P_MSGI: STATE=msgi; break;
2212 case P_MSGO: STATE=msgo; break;
2213 case P_DATAO: STATE=datao; break;
2214 case P_DATAI: STATE=datai; break;
2215 case P_STATUS: STATE=status; break;
2216 case P_CMD: STATE=cmd; break;
2217 }
2218 dataphase=1;
2219 }
2220
2221 if((stat0 & SELDI) && STATE!=seldi && !dataphase) {
2222 scmd_printk(KERN_INFO, CURRENT_SC, "reselection missed?");
2223 }
2224
2225 if(STATE!=PREVSTATE) {
2226 LASTSTATE=PREVSTATE;
2227 }
2228
2229 return dataphase;
2230 }
2231
2232 /*
2233 * handle parity error
2234 *
2235 * FIXME: in which phase?
2236 *
2237 */
2238 static void parerr_run(struct Scsi_Host *shpnt)
2239 {
2240 scmd_printk(KERN_ERR, CURRENT_SC, "parity error\n");
2241 done(shpnt, DID_PARITY << 16);
2242 }
2243
2244 /*
2245 * handle reset in
2246 *
2247 */
2248 static void rsti_run(struct Scsi_Host *shpnt)
2249 {
2250 Scsi_Cmnd *ptr;
2251
2252 shost_printk(KERN_NOTICE, shpnt, "scsi reset in\n");
2253
2254 ptr=DISCONNECTED_SC;
2255 while(ptr) {
2256 Scsi_Cmnd *next = SCNEXT(ptr);
2257
2258 if (!ptr->device->soft_reset) {
2259 remove_SC(&DISCONNECTED_SC, ptr);
2260
2261 kfree(ptr->host_scribble);
2262 ptr->host_scribble=NULL;
2263
2264 ptr->result = DID_RESET << 16;
2265 ptr->scsi_done(ptr);
2266 }
2267
2268 ptr = next;
2269 }
2270
2271 if(CURRENT_SC && !CURRENT_SC->device->soft_reset)
2272 done(shpnt, DID_RESET << 16 );
2273 }
2274
2275
2276 /*
2277 * bottom-half handler
2278 *
2279 */
2280 static void is_complete(struct Scsi_Host *shpnt)
2281 {
2282 int dataphase;
2283 unsigned long flags;
2284 int pending;
2285
2286 if(!shpnt)
2287 return;
2288
2289 DO_LOCK(flags);
2290
2291 if( HOSTDATA(shpnt)->service==0 ) {
2292 DO_UNLOCK(flags);
2293 return;
2294 }
2295
2296 HOSTDATA(shpnt)->service = 0;
2297
2298 if(HOSTDATA(shpnt)->in_intr) {
2299 DO_UNLOCK(flags);
2300 /* aha152x_error never returns.. */
2301 aha152x_error(shpnt, "bottom-half already running!?");
2302 }
2303 HOSTDATA(shpnt)->in_intr++;
2304
2305 /*
2306 * loop while there are interrupt conditions pending
2307 *
2308 */
2309 do {
2310 unsigned long start = jiffies;
2311 DO_UNLOCK(flags);
2312
2313 dataphase=update_state(shpnt);
2314
2315 /*
2316 * end previous state
2317 *
2318 */
2319 if(PREVSTATE!=STATE && states[PREVSTATE].end)
2320 states[PREVSTATE].end(shpnt);
2321
2322 /*
2323 * disable SPIO mode if previous phase used it
2324 * and this one doesn't
2325 *
2326 */
2327 if(states[PREVSTATE].spio && !states[STATE].spio) {
2328 SETPORT(SXFRCTL0, CH1);
2329 SETPORT(DMACNTRL0, 0);
2330 if(CURRENT_SC)
2331 CURRENT_SC->SCp.phase &= ~spiordy;
2332 }
2333
2334 /*
2335 * accept current dataphase phase
2336 *
2337 */
2338 if(dataphase) {
2339 SETPORT(SSTAT0, REQINIT);
2340 SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK);
2341 SETPORT(SSTAT1, PHASECHG);
2342 }
2343
2344 /*
2345 * enable SPIO mode if previous didn't use it
2346 * and this one does
2347 *
2348 */
2349 if(!states[PREVSTATE].spio && states[STATE].spio) {
2350 SETPORT(DMACNTRL0, 0);
2351 SETPORT(SXFRCTL0, CH1|SPIOEN);
2352 if(CURRENT_SC)
2353 CURRENT_SC->SCp.phase |= spiordy;
2354 }
2355
2356 /*
2357 * initialize for new state
2358 *
2359 */
2360 if(PREVSTATE!=STATE && states[STATE].init)
2361 states[STATE].init(shpnt);
2362
2363 /*
2364 * handle current state
2365 *
2366 */
2367 if(states[STATE].run)
2368 states[STATE].run(shpnt);
2369 else
2370 scmd_printk(KERN_ERR, CURRENT_SC,
2371 "unexpected state (%x)\n", STATE);
2372
2373 /*
2374 * setup controller to interrupt on
2375 * the next expected condition and
2376 * loop if it's already there
2377 *
2378 */
2379 DO_LOCK(flags);
2380 pending=setup_expected_interrupts(shpnt);
2381 #if defined(AHA152X_STAT)
2382 HOSTDATA(shpnt)->count[STATE]++;
2383 if(PREVSTATE!=STATE)
2384 HOSTDATA(shpnt)->count_trans[STATE]++;
2385 HOSTDATA(shpnt)->time[STATE] += jiffies-start;
2386 #endif
2387
2388 } while(pending);
2389
2390 /*
2391 * enable interrupts and leave bottom-half
2392 *
2393 */
2394 HOSTDATA(shpnt)->in_intr--;
2395 SETBITS(DMACNTRL0, INTEN);
2396 DO_UNLOCK(flags);
2397 }
2398
2399
2400 /*
2401 * Dump the current driver status and panic
2402 */
2403 static void aha152x_error(struct Scsi_Host *shpnt, char *msg)
2404 {
2405 shost_printk(KERN_EMERG, shpnt, "%s\n", msg);
2406 show_queues(shpnt);
2407 panic("aha152x panic\n");
2408 }
2409
2410 /*
2411 * display enabled interrupts
2412 */
2413 static void disp_enintr(struct Scsi_Host *shpnt)
2414 {
2415 int s0, s1;
2416
2417 s0 = GETPORT(SIMODE0);
2418 s1 = GETPORT(SIMODE1);
2419
2420 shost_printk(KERN_DEBUG, shpnt,
2421 "enabled interrupts (%s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n",
2422 (s0 & ENSELDO) ? "ENSELDO " : "",
2423 (s0 & ENSELDI) ? "ENSELDI " : "",
2424 (s0 & ENSELINGO) ? "ENSELINGO " : "",
2425 (s0 & ENSWRAP) ? "ENSWRAP " : "",
2426 (s0 & ENSDONE) ? "ENSDONE " : "",
2427 (s0 & ENSPIORDY) ? "ENSPIORDY " : "",
2428 (s0 & ENDMADONE) ? "ENDMADONE " : "",
2429 (s1 & ENSELTIMO) ? "ENSELTIMO " : "",
2430 (s1 & ENATNTARG) ? "ENATNTARG " : "",
2431 (s1 & ENPHASEMIS) ? "ENPHASEMIS " : "",
2432 (s1 & ENBUSFREE) ? "ENBUSFREE " : "",
2433 (s1 & ENSCSIPERR) ? "ENSCSIPERR " : "",
2434 (s1 & ENPHASECHG) ? "ENPHASECHG " : "",
2435 (s1 & ENREQINIT) ? "ENREQINIT " : "");
2436 }
2437
2438 /*
2439 * Show the command data of a command
2440 */
2441 static void show_command(Scsi_Cmnd *ptr)
2442 {
2443 scsi_print_command(ptr);
2444 scmd_printk(KERN_DEBUG, ptr,
2445 "request_bufflen=%d; resid=%d; "
2446 "phase |%s%s%s%s%s%s%s%s%s; next=0x%p",
2447 scsi_bufflen(ptr), scsi_get_resid(ptr),
2448 (ptr->SCp.phase & not_issued) ? "not issued|" : "",
2449 (ptr->SCp.phase & selecting) ? "selecting|" : "",
2450 (ptr->SCp.phase & identified) ? "identified|" : "",
2451 (ptr->SCp.phase & disconnected) ? "disconnected|" : "",
2452 (ptr->SCp.phase & completed) ? "completed|" : "",
2453 (ptr->SCp.phase & spiordy) ? "spiordy|" : "",
2454 (ptr->SCp.phase & syncneg) ? "syncneg|" : "",
2455 (ptr->SCp.phase & aborted) ? "aborted|" : "",
2456 (ptr->SCp.phase & resetted) ? "resetted|" : "",
2457 (SCDATA(ptr)) ? SCNEXT(ptr) : NULL);
2458 }
2459
2460 /*
2461 * Dump the queued data
2462 */
2463 static void show_queues(struct Scsi_Host *shpnt)
2464 {
2465 Scsi_Cmnd *ptr;
2466 unsigned long flags;
2467
2468 DO_LOCK(flags);
2469 printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n");
2470 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
2471 show_command(ptr);
2472 DO_UNLOCK(flags);
2473
2474 printk(KERN_DEBUG "current_SC:\n");
2475 if (CURRENT_SC)
2476 show_command(CURRENT_SC);
2477 else
2478 printk(KERN_DEBUG "none\n");
2479
2480 printk(KERN_DEBUG "disconnected_SC:\n");
2481 for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL)
2482 show_command(ptr);
2483
2484 disp_enintr(shpnt);
2485 }
2486
2487 static void get_command(struct seq_file *m, Scsi_Cmnd * ptr)
2488 {
2489 int i;
2490
2491 seq_printf(m, "%p: target=%d; lun=%d; cmnd=( ",
2492 ptr, ptr->device->id, (u8)ptr->device->lun);
2493
2494 for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++)
2495 seq_printf(m, "0x%02x ", ptr->cmnd[i]);
2496
2497 seq_printf(m, "); resid=%d; residual=%d; buffers=%d; phase |",
2498 scsi_get_resid(ptr), ptr->SCp.this_residual,
2499 ptr->SCp.buffers_residual);
2500
2501 if (ptr->SCp.phase & not_issued)
2502 seq_puts(m, "not issued|");
2503 if (ptr->SCp.phase & selecting)
2504 seq_puts(m, "selecting|");
2505 if (ptr->SCp.phase & disconnected)
2506 seq_puts(m, "disconnected|");
2507 if (ptr->SCp.phase & aborted)
2508 seq_puts(m, "aborted|");
2509 if (ptr->SCp.phase & identified)
2510 seq_puts(m, "identified|");
2511 if (ptr->SCp.phase & completed)
2512 seq_puts(m, "completed|");
2513 if (ptr->SCp.phase & spiordy)
2514 seq_puts(m, "spiordy|");
2515 if (ptr->SCp.phase & syncneg)
2516 seq_puts(m, "syncneg|");
2517 seq_printf(m, "; next=0x%p\n", SCNEXT(ptr));
2518 }
2519
2520 static void get_ports(struct seq_file *m, struct Scsi_Host *shpnt)
2521 {
2522 int s;
2523
2524 seq_printf(m, "\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name);
2525
2526 s = GETPORT(SCSISEQ);
2527 seq_puts(m, "SCSISEQ( ");
2528 if (s & TEMODEO)
2529 seq_puts(m, "TARGET MODE ");
2530 if (s & ENSELO)
2531 seq_puts(m, "SELO ");
2532 if (s & ENSELI)
2533 seq_puts(m, "SELI ");
2534 if (s & ENRESELI)
2535 seq_puts(m, "RESELI ");
2536 if (s & ENAUTOATNO)
2537 seq_puts(m, "AUTOATNO ");
2538 if (s & ENAUTOATNI)
2539 seq_puts(m, "AUTOATNI ");
2540 if (s & ENAUTOATNP)
2541 seq_puts(m, "AUTOATNP ");
2542 if (s & SCSIRSTO)
2543 seq_puts(m, "SCSIRSTO ");
2544 seq_puts(m, ");");
2545
2546 seq_puts(m, " SCSISIG(");
2547 s = GETPORT(SCSISIG);
2548 switch (s & P_MASK) {
2549 case P_DATAO:
2550 seq_puts(m, "DATA OUT");
2551 break;
2552 case P_DATAI:
2553 seq_puts(m, "DATA IN");
2554 break;
2555 case P_CMD:
2556 seq_puts(m, "COMMAND");
2557 break;
2558 case P_STATUS:
2559 seq_puts(m, "STATUS");
2560 break;
2561 case P_MSGO:
2562 seq_puts(m, "MESSAGE OUT");
2563 break;
2564 case P_MSGI:
2565 seq_puts(m, "MESSAGE IN");
2566 break;
2567 default:
2568 seq_puts(m, "*invalid*");
2569 break;
2570 }
2571
2572 seq_puts(m, "); ");
2573
2574 seq_printf(m, "INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");
2575
2576 seq_puts(m, "SSTAT( ");
2577 s = GETPORT(SSTAT0);
2578 if (s & TARGET)
2579 seq_puts(m, "TARGET ");
2580 if (s & SELDO)
2581 seq_puts(m, "SELDO ");
2582 if (s & SELDI)
2583 seq_puts(m, "SELDI ");
2584 if (s & SELINGO)
2585 seq_puts(m, "SELINGO ");
2586 if (s & SWRAP)
2587 seq_puts(m, "SWRAP ");
2588 if (s & SDONE)
2589 seq_puts(m, "SDONE ");
2590 if (s & SPIORDY)
2591 seq_puts(m, "SPIORDY ");
2592 if (s & DMADONE)
2593 seq_puts(m, "DMADONE ");
2594
2595 s = GETPORT(SSTAT1);
2596 if (s & SELTO)
2597 seq_puts(m, "SELTO ");
2598 if (s & ATNTARG)
2599 seq_puts(m, "ATNTARG ");
2600 if (s & SCSIRSTI)
2601 seq_puts(m, "SCSIRSTI ");
2602 if (s & PHASEMIS)
2603 seq_puts(m, "PHASEMIS ");
2604 if (s & BUSFREE)
2605 seq_puts(m, "BUSFREE ");
2606 if (s & SCSIPERR)
2607 seq_puts(m, "SCSIPERR ");
2608 if (s & PHASECHG)
2609 seq_puts(m, "PHASECHG ");
2610 if (s & REQINIT)
2611 seq_puts(m, "REQINIT ");
2612 seq_puts(m, "); ");
2613
2614
2615 seq_puts(m, "SSTAT( ");
2616
2617 s = GETPORT(SSTAT0) & GETPORT(SIMODE0);
2618
2619 if (s & TARGET)
2620 seq_puts(m, "TARGET ");
2621 if (s & SELDO)
2622 seq_puts(m, "SELDO ");
2623 if (s & SELDI)
2624 seq_puts(m, "SELDI ");
2625 if (s & SELINGO)
2626 seq_puts(m, "SELINGO ");
2627 if (s & SWRAP)
2628 seq_puts(m, "SWRAP ");
2629 if (s & SDONE)
2630 seq_puts(m, "SDONE ");
2631 if (s & SPIORDY)
2632 seq_puts(m, "SPIORDY ");
2633 if (s & DMADONE)
2634 seq_puts(m, "DMADONE ");
2635
2636 s = GETPORT(SSTAT1) & GETPORT(SIMODE1);
2637
2638 if (s & SELTO)
2639 seq_puts(m, "SELTO ");
2640 if (s & ATNTARG)
2641 seq_puts(m, "ATNTARG ");
2642 if (s & SCSIRSTI)
2643 seq_puts(m, "SCSIRSTI ");
2644 if (s & PHASEMIS)
2645 seq_puts(m, "PHASEMIS ");
2646 if (s & BUSFREE)
2647 seq_puts(m, "BUSFREE ");
2648 if (s & SCSIPERR)
2649 seq_puts(m, "SCSIPERR ");
2650 if (s & PHASECHG)
2651 seq_puts(m, "PHASECHG ");
2652 if (s & REQINIT)
2653 seq_puts(m, "REQINIT ");
2654 seq_puts(m, "); ");
2655
2656 seq_puts(m, "SXFRCTL0( ");
2657
2658 s = GETPORT(SXFRCTL0);
2659 if (s & SCSIEN)
2660 seq_puts(m, "SCSIEN ");
2661 if (s & DMAEN)
2662 seq_puts(m, "DMAEN ");
2663 if (s & CH1)
2664 seq_puts(m, "CH1 ");
2665 if (s & CLRSTCNT)
2666 seq_puts(m, "CLRSTCNT ");
2667 if (s & SPIOEN)
2668 seq_puts(m, "SPIOEN ");
2669 if (s & CLRCH1)
2670 seq_puts(m, "CLRCH1 ");
2671 seq_puts(m, "); ");
2672
2673 seq_puts(m, "SIGNAL( ");
2674
2675 s = GETPORT(SCSISIG);
2676 if (s & SIG_ATNI)
2677 seq_puts(m, "ATNI ");
2678 if (s & SIG_SELI)
2679 seq_puts(m, "SELI ");
2680 if (s & SIG_BSYI)
2681 seq_puts(m, "BSYI ");
2682 if (s & SIG_REQI)
2683 seq_puts(m, "REQI ");
2684 if (s & SIG_ACKI)
2685 seq_puts(m, "ACKI ");
2686 seq_puts(m, "); ");
2687
2688 seq_printf(m, "SELID(%02x), ", GETPORT(SELID));
2689
2690 seq_printf(m, "STCNT(%d), ", GETSTCNT());
2691
2692 seq_puts(m, "SSTAT2( ");
2693
2694 s = GETPORT(SSTAT2);
2695 if (s & SOFFSET)
2696 seq_puts(m, "SOFFSET ");
2697 if (s & SEMPTY)
2698 seq_puts(m, "SEMPTY ");
2699 if (s & SFULL)
2700 seq_puts(m, "SFULL ");
2701 seq_printf(m, "); SFCNT (%d); ", s & (SFULL | SFCNT));
2702
2703 s = GETPORT(SSTAT3);
2704 seq_printf(m, "SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);
2705
2706 seq_puts(m, "SSTAT4( ");
2707 s = GETPORT(SSTAT4);
2708 if (s & SYNCERR)
2709 seq_puts(m, "SYNCERR ");
2710 if (s & FWERR)
2711 seq_puts(m, "FWERR ");
2712 if (s & FRERR)
2713 seq_puts(m, "FRERR ");
2714 seq_puts(m, "); ");
2715
2716 seq_puts(m, "DMACNTRL0( ");
2717 s = GETPORT(DMACNTRL0);
2718 seq_printf(m, "%s ", s & _8BIT ? "8BIT" : "16BIT");
2719 seq_printf(m, "%s ", s & DMA ? "DMA" : "PIO");
2720 seq_printf(m, "%s ", s & WRITE_READ ? "WRITE" : "READ");
2721 if (s & ENDMA)
2722 seq_puts(m, "ENDMA ");
2723 if (s & INTEN)
2724 seq_puts(m, "INTEN ");
2725 if (s & RSTFIFO)
2726 seq_puts(m, "RSTFIFO ");
2727 if (s & SWINT)
2728 seq_puts(m, "SWINT ");
2729 seq_puts(m, "); ");
2730
2731 seq_puts(m, "DMASTAT( ");
2732 s = GETPORT(DMASTAT);
2733 if (s & ATDONE)
2734 seq_puts(m, "ATDONE ");
2735 if (s & WORDRDY)
2736 seq_puts(m, "WORDRDY ");
2737 if (s & DFIFOFULL)
2738 seq_puts(m, "DFIFOFULL ");
2739 if (s & DFIFOEMP)
2740 seq_puts(m, "DFIFOEMP ");
2741 seq_puts(m, ")\n");
2742
2743 seq_puts(m, "enabled interrupts( ");
2744
2745 s = GETPORT(SIMODE0);
2746 if (s & ENSELDO)
2747 seq_puts(m, "ENSELDO ");
2748 if (s & ENSELDI)
2749 seq_puts(m, "ENSELDI ");
2750 if (s & ENSELINGO)
2751 seq_puts(m, "ENSELINGO ");
2752 if (s & ENSWRAP)
2753 seq_puts(m, "ENSWRAP ");
2754 if (s & ENSDONE)
2755 seq_puts(m, "ENSDONE ");
2756 if (s & ENSPIORDY)
2757 seq_puts(m, "ENSPIORDY ");
2758 if (s & ENDMADONE)
2759 seq_puts(m, "ENDMADONE ");
2760
2761 s = GETPORT(SIMODE1);
2762 if (s & ENSELTIMO)
2763 seq_puts(m, "ENSELTIMO ");
2764 if (s & ENATNTARG)
2765 seq_puts(m, "ENATNTARG ");
2766 if (s & ENPHASEMIS)
2767 seq_puts(m, "ENPHASEMIS ");
2768 if (s & ENBUSFREE)
2769 seq_puts(m, "ENBUSFREE ");
2770 if (s & ENSCSIPERR)
2771 seq_puts(m, "ENSCSIPERR ");
2772 if (s & ENPHASECHG)
2773 seq_puts(m, "ENPHASECHG ");
2774 if (s & ENREQINIT)
2775 seq_puts(m, "ENREQINIT ");
2776 seq_puts(m, ")\n");
2777 }
2778
2779 static int aha152x_set_info(struct Scsi_Host *shpnt, char *buffer, int length)
2780 {
2781 if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0)
2782 return -EINVAL;
2783
2784 #if defined(AHA152X_STAT)
2785 if(length>13 && strncmp("reset", buffer+8, 5)==0) {
2786 int i;
2787
2788 HOSTDATA(shpnt)->total_commands=0;
2789 HOSTDATA(shpnt)->disconnections=0;
2790 HOSTDATA(shpnt)->busfree_without_any_action=0;
2791 HOSTDATA(shpnt)->busfree_without_old_command=0;
2792 HOSTDATA(shpnt)->busfree_without_new_command=0;
2793 HOSTDATA(shpnt)->busfree_without_done_command=0;
2794 HOSTDATA(shpnt)->busfree_with_check_condition=0;
2795 for (i = idle; i<maxstate; i++) {
2796 HOSTDATA(shpnt)->count[i]=0;
2797 HOSTDATA(shpnt)->count_trans[i]=0;
2798 HOSTDATA(shpnt)->time[i]=0;
2799 }
2800
2801 shost_printk(KERN_INFO, shpnt, "aha152x: stats reset.\n");
2802
2803 } else
2804 #endif
2805 {
2806 return -EINVAL;
2807 }
2808
2809
2810 return length;
2811 }
2812
2813 static int aha152x_show_info(struct seq_file *m, struct Scsi_Host *shpnt)
2814 {
2815 int i;
2816 Scsi_Cmnd *ptr;
2817 unsigned long flags;
2818
2819 seq_puts(m, AHA152X_REVID "\n");
2820
2821 seq_printf(m, "ioports 0x%04lx to 0x%04lx\n",
2822 shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1);
2823 seq_printf(m, "interrupt 0x%02x\n", shpnt->irq);
2824 seq_printf(m, "disconnection/reconnection %s\n",
2825 RECONNECT ? "enabled" : "disabled");
2826 seq_printf(m, "parity checking %s\n",
2827 PARITY ? "enabled" : "disabled");
2828 seq_printf(m, "synchronous transfers %s\n",
2829 SYNCHRONOUS ? "enabled" : "disabled");
2830 seq_printf(m, "%d commands currently queued\n", HOSTDATA(shpnt)->commands);
2831
2832 if(SYNCHRONOUS) {
2833 seq_puts(m, "synchronously operating targets (tick=50 ns):\n");
2834 for (i = 0; i < 8; i++)
2835 if (HOSTDATA(shpnt)->syncrate[i] & 0x7f)
2836 seq_printf(m, "target %d: period %dT/%dns; req/ack offset %d\n",
2837 i,
2838 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2),
2839 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50,
2840 HOSTDATA(shpnt)->syncrate[i] & 0x0f);
2841 }
2842 seq_puts(m, "\nqueue status:\n");
2843 DO_LOCK(flags);
2844 if (ISSUE_SC) {
2845 seq_puts(m, "not yet issued commands:\n");
2846 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
2847 get_command(m, ptr);
2848 } else
2849 seq_puts(m, "no not yet issued commands\n");
2850 DO_UNLOCK(flags);
2851
2852 if (CURRENT_SC) {
2853 seq_puts(m, "current command:\n");
2854 get_command(m, CURRENT_SC);
2855 } else
2856 seq_puts(m, "no current command\n");
2857
2858 if (DISCONNECTED_SC) {
2859 seq_puts(m, "disconnected commands:\n");
2860 for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr))
2861 get_command(m, ptr);
2862 } else
2863 seq_puts(m, "no disconnected commands\n");
2864
2865 get_ports(m, shpnt);
2866
2867 #if defined(AHA152X_STAT)
2868 seq_printf(m, "statistics:\n"
2869 "total commands: %d\n"
2870 "disconnections: %d\n"
2871 "busfree with check condition: %d\n"
2872 "busfree without old command: %d\n"
2873 "busfree without new command: %d\n"
2874 "busfree without done command: %d\n"
2875 "busfree without any action: %d\n"
2876 "state "
2877 "transitions "
2878 "count "
2879 "time\n",
2880 HOSTDATA(shpnt)->total_commands,
2881 HOSTDATA(shpnt)->disconnections,
2882 HOSTDATA(shpnt)->busfree_with_check_condition,
2883 HOSTDATA(shpnt)->busfree_without_old_command,
2884 HOSTDATA(shpnt)->busfree_without_new_command,
2885 HOSTDATA(shpnt)->busfree_without_done_command,
2886 HOSTDATA(shpnt)->busfree_without_any_action);
2887 for(i=0; i<maxstate; i++) {
2888 seq_printf(m, "%-10s %-12d %-12d %-12ld\n",
2889 states[i].name,
2890 HOSTDATA(shpnt)->count_trans[i],
2891 HOSTDATA(shpnt)->count[i],
2892 HOSTDATA(shpnt)->time[i]);
2893 }
2894 #endif
2895 return 0;
2896 }
2897
2898 static int aha152x_adjust_queue(struct scsi_device *device)
2899 {
2900 blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH);
2901 return 0;
2902 }
2903
2904 static struct scsi_host_template aha152x_driver_template = {
2905 .module = THIS_MODULE,
2906 .name = AHA152X_REVID,
2907 .proc_name = "aha152x",
2908 .show_info = aha152x_show_info,
2909 .write_info = aha152x_set_info,
2910 .queuecommand = aha152x_queue,
2911 .eh_abort_handler = aha152x_abort,
2912 .eh_device_reset_handler = aha152x_device_reset,
2913 .eh_bus_reset_handler = aha152x_bus_reset,
2914 .bios_param = aha152x_biosparam,
2915 .can_queue = 1,
2916 .this_id = 7,
2917 .sg_tablesize = SG_ALL,
2918 .use_clustering = DISABLE_CLUSTERING,
2919 .slave_alloc = aha152x_adjust_queue,
2920 };
2921
2922 #if !defined(PCMCIA)
2923 static int setup_count;
2924 static struct aha152x_setup setup[2];
2925
2926 /* possible i/o addresses for the AIC-6260; default first */
2927 static unsigned short ports[] = { 0x340, 0x140 };
2928
2929 #if !defined(SKIP_BIOSTEST)
2930 /* possible locations for the Adaptec BIOS; defaults first */
2931 static unsigned int addresses[] =
2932 {
2933 0xdc000, /* default first */
2934 0xc8000,
2935 0xcc000,
2936 0xd0000,
2937 0xd4000,
2938 0xd8000,
2939 0xe0000,
2940 0xeb800, /* VTech Platinum SMP */
2941 0xf0000,
2942 };
2943
2944 /* signatures for various AIC-6[23]60 based controllers.
2945 The point in detecting signatures is to avoid useless and maybe
2946 harmful probes on ports. I'm not sure that all listed boards pass
2947 auto-configuration. For those which fail the BIOS signature is
2948 obsolete, because user intervention to supply the configuration is
2949 needed anyway. May be an information whether or not the BIOS supports
2950 extended translation could be also useful here. */
2951 static struct signature {
2952 unsigned char *signature;
2953 int sig_offset;
2954 int sig_length;
2955 } signatures[] =
2956 {
2957 { "Adaptec AHA-1520 BIOS", 0x102e, 21 },
2958 /* Adaptec 152x */
2959 { "Adaptec AHA-1520B", 0x000b, 17 },
2960 /* Adaptec 152x rev B */
2961 { "Adaptec AHA-1520B", 0x0026, 17 },
2962 /* Iomega Jaz Jet ISA (AIC6370Q) */
2963 { "Adaptec ASW-B626 BIOS", 0x1029, 21 },
2964 /* on-board controller */
2965 { "Adaptec BIOS: ASW-B626", 0x000f, 22 },
2966 /* on-board controller */
2967 { "Adaptec ASW-B626 S2", 0x2e6c, 19 },
2968 /* on-board controller */
2969 { "Adaptec BIOS:AIC-6360", 0x000c, 21 },
2970 /* on-board controller */
2971 { "ScsiPro SP-360 BIOS", 0x2873, 19 },
2972 /* ScsiPro-Controller */
2973 { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 },
2974 /* Gigabyte Local-Bus-SCSI */
2975 { "Adaptec BIOS:AVA-282X", 0x000c, 21 },
2976 /* Adaptec 282x */
2977 { "Adaptec IBM Dock II SCSI", 0x2edd, 24 },
2978 /* IBM Thinkpad Dock II */
2979 { "Adaptec BIOS:AHA-1532P", 0x001c, 22 },
2980 /* IBM Thinkpad Dock II SCSI */
2981 { "DTC3520A Host Adapter BIOS", 0x318a, 26 },
2982 /* DTC 3520A ISA SCSI */
2983 };
2984 #endif /* !SKIP_BIOSTEST */
2985
2986 /*
2987 * Test, if port_base is valid.
2988 *
2989 */
2990 static int aha152x_porttest(int io_port)
2991 {
2992 int i;
2993
2994 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */
2995 for (i = 0; i < 16; i++)
2996 SETPORT(io_port + O_STACK, i);
2997
2998 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */
2999 for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++)
3000 ;
3001
3002 return (i == 16);
3003 }
3004
3005 static int tc1550_porttest(int io_port)
3006 {
3007 int i;
3008
3009 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */
3010 for (i = 0; i < 16; i++)
3011 SETPORT(io_port + O_STACK, i);
3012
3013 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */
3014 for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++)
3015 ;
3016
3017 return (i == 16);
3018 }
3019
3020
3021 static int checksetup(struct aha152x_setup *setup)
3022 {
3023 int i;
3024 for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++)
3025 ;
3026
3027 if (i == ARRAY_SIZE(ports))
3028 return 0;
3029
3030 if (!request_region(setup->io_port, IO_RANGE, "aha152x")) {
3031 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port);
3032 return 0;
3033 }
3034
3035 if( aha152x_porttest(setup->io_port) ) {
3036 setup->tc1550=0;
3037 } else if( tc1550_porttest(setup->io_port) ) {
3038 setup->tc1550=1;
3039 } else {
3040 release_region(setup->io_port, IO_RANGE);
3041 return 0;
3042 }
3043
3044 release_region(setup->io_port, IO_RANGE);
3045
3046 if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX))
3047 return 0;
3048
3049 if ((setup->scsiid < 0) || (setup->scsiid > 7))
3050 return 0;
3051
3052 if ((setup->reconnect < 0) || (setup->reconnect > 1))
3053 return 0;
3054
3055 if ((setup->parity < 0) || (setup->parity > 1))
3056 return 0;
3057
3058 if ((setup->synchronous < 0) || (setup->synchronous > 1))
3059 return 0;
3060
3061 if ((setup->ext_trans < 0) || (setup->ext_trans > 1))
3062 return 0;
3063
3064
3065 return 1;
3066 }
3067
3068
3069 static int __init aha152x_init(void)
3070 {
3071 int i, j, ok;
3072 #if defined(AUTOCONF)
3073 aha152x_config conf;
3074 #endif
3075 #ifdef __ISAPNP__
3076 struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL};
3077 #endif
3078
3079 if ( setup_count ) {
3080 printk(KERN_INFO "aha152x: processing commandline: ");
3081
3082 for (i = 0; i<setup_count; i++) {
3083 if (!checksetup(&setup[i])) {
3084 printk(KERN_ERR "\naha152x: %s\n", setup[i].conf);
3085 printk(KERN_ERR "aha152x: invalid line\n");
3086 }
3087 }
3088 printk("ok\n");
3089 }
3090
3091 #if defined(SETUP0)
3092 if (setup_count < ARRAY_SIZE(setup)) {
3093 struct aha152x_setup override = SETUP0;
3094
3095 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3096 if (!checksetup(&override)) {
3097 printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3098 override.io_port,
3099 override.irq,
3100 override.scsiid,
3101 override.reconnect,
3102 override.parity,
3103 override.synchronous,
3104 override.delay,
3105 override.ext_trans);
3106 } else
3107 setup[setup_count++] = override;
3108 }
3109 }
3110 #endif
3111
3112 #if defined(SETUP1)
3113 if (setup_count < ARRAY_SIZE(setup)) {
3114 struct aha152x_setup override = SETUP1;
3115
3116 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3117 if (!checksetup(&override)) {
3118 printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3119 override.io_port,
3120 override.irq,
3121 override.scsiid,
3122 override.reconnect,
3123 override.parity,
3124 override.synchronous,
3125 override.delay,
3126 override.ext_trans);
3127 } else
3128 setup[setup_count++] = override;
3129 }
3130 }
3131 #endif
3132
3133 #if defined(MODULE)
3134 if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) {
3135 if(aha152x[0]!=0) {
3136 setup[setup_count].conf = "";
3137 setup[setup_count].io_port = aha152x[0];
3138 setup[setup_count].irq = aha152x[1];
3139 setup[setup_count].scsiid = aha152x[2];
3140 setup[setup_count].reconnect = aha152x[3];
3141 setup[setup_count].parity = aha152x[4];
3142 setup[setup_count].synchronous = aha152x[5];
3143 setup[setup_count].delay = aha152x[6];
3144 setup[setup_count].ext_trans = aha152x[7];
3145 } else if (io[0] != 0 || irq[0] != 0) {
3146 if(io[0]!=0) setup[setup_count].io_port = io[0];
3147 if(irq[0]!=0) setup[setup_count].irq = irq[0];
3148
3149 setup[setup_count].scsiid = scsiid[0];
3150 setup[setup_count].reconnect = reconnect[0];
3151 setup[setup_count].parity = parity[0];
3152 setup[setup_count].synchronous = sync[0];
3153 setup[setup_count].delay = delay[0];
3154 setup[setup_count].ext_trans = exttrans[0];
3155 }
3156
3157 if (checksetup(&setup[setup_count]))
3158 setup_count++;
3159 else
3160 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",
3161 setup[setup_count].io_port,
3162 setup[setup_count].irq,
3163 setup[setup_count].scsiid,
3164 setup[setup_count].reconnect,
3165 setup[setup_count].parity,
3166 setup[setup_count].synchronous,
3167 setup[setup_count].delay,
3168 setup[setup_count].ext_trans);
3169 }
3170
3171 if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) {
3172 if(aha152x1[0]!=0) {
3173 setup[setup_count].conf = "";
3174 setup[setup_count].io_port = aha152x1[0];
3175 setup[setup_count].irq = aha152x1[1];
3176 setup[setup_count].scsiid = aha152x1[2];
3177 setup[setup_count].reconnect = aha152x1[3];
3178 setup[setup_count].parity = aha152x1[4];
3179 setup[setup_count].synchronous = aha152x1[5];
3180 setup[setup_count].delay = aha152x1[6];
3181 setup[setup_count].ext_trans = aha152x1[7];
3182 } else if (io[1] != 0 || irq[1] != 0) {
3183 if(io[1]!=0) setup[setup_count].io_port = io[1];
3184 if(irq[1]!=0) setup[setup_count].irq = irq[1];
3185
3186 setup[setup_count].scsiid = scsiid[1];
3187 setup[setup_count].reconnect = reconnect[1];
3188 setup[setup_count].parity = parity[1];
3189 setup[setup_count].synchronous = sync[1];
3190 setup[setup_count].delay = delay[1];
3191 setup[setup_count].ext_trans = exttrans[1];
3192 }
3193 if (checksetup(&setup[setup_count]))
3194 setup_count++;
3195 else
3196 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",
3197 setup[setup_count].io_port,
3198 setup[setup_count].irq,
3199 setup[setup_count].scsiid,
3200 setup[setup_count].reconnect,
3201 setup[setup_count].parity,
3202 setup[setup_count].synchronous,
3203 setup[setup_count].delay,
3204 setup[setup_count].ext_trans);
3205 }
3206 #endif
3207
3208 #ifdef __ISAPNP__
3209 for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) {
3210 while ( setup_count<ARRAY_SIZE(setup) &&
3211 (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) {
3212 if (pnp_device_attach(dev) < 0)
3213 continue;
3214
3215 if (pnp_activate_dev(dev) < 0) {
3216 pnp_device_detach(dev);
3217 continue;
3218 }
3219
3220 if (!pnp_port_valid(dev, 0)) {
3221 pnp_device_detach(dev);
3222 continue;
3223 }
3224
3225 if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) {
3226 pnp_device_detach(dev);
3227 continue;
3228 }
3229
3230 setup[setup_count].io_port = pnp_port_start(dev, 0);
3231 setup[setup_count].irq = pnp_irq(dev, 0);
3232 setup[setup_count].scsiid = 7;
3233 setup[setup_count].reconnect = 1;
3234 setup[setup_count].parity = 1;
3235 setup[setup_count].synchronous = 1;
3236 setup[setup_count].delay = DELAY_DEFAULT;
3237 setup[setup_count].ext_trans = 0;
3238 #if defined(__ISAPNP__)
3239 pnpdev[setup_count] = dev;
3240 #endif
3241 printk (KERN_INFO
3242 "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n",
3243 setup[setup_count].io_port, setup[setup_count].irq);
3244 setup_count++;
3245 }
3246 }
3247 #endif
3248
3249 #if defined(AUTOCONF)
3250 if (setup_count<ARRAY_SIZE(setup)) {
3251 #if !defined(SKIP_BIOSTEST)
3252 ok = 0;
3253 for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) {
3254 void __iomem *p = ioremap(addresses[i], 0x4000);
3255 if (!p)
3256 continue;
3257 for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++)
3258 ok = check_signature(p + signatures[j].sig_offset,
3259 signatures[j].signature, signatures[j].sig_length);
3260 iounmap(p);
3261 }
3262 if (!ok && setup_count == 0)
3263 return -ENODEV;
3264
3265 printk(KERN_INFO "aha152x: BIOS test: passed, ");
3266 #else
3267 printk(KERN_INFO "aha152x: ");
3268 #endif /* !SKIP_BIOSTEST */
3269
3270 ok = 0;
3271 for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) {
3272 if ((setup_count == 1) && (setup[0].io_port == ports[i]))
3273 continue;
3274
3275 if (!request_region(ports[i], IO_RANGE, "aha152x")) {
3276 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]);
3277 continue;
3278 }
3279
3280 if (aha152x_porttest(ports[i])) {
3281 setup[setup_count].tc1550 = 0;
3282
3283 conf.cf_port =
3284 (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB);
3285 } else if (tc1550_porttest(ports[i])) {
3286 setup[setup_count].tc1550 = 1;
3287
3288 conf.cf_port =
3289 (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB);
3290 } else {
3291 release_region(ports[i], IO_RANGE);
3292 continue;
3293 }
3294
3295 release_region(ports[i], IO_RANGE);
3296
3297 ok++;
3298 setup[setup_count].io_port = ports[i];
3299 setup[setup_count].irq = IRQ_MIN + conf.cf_irq;
3300 setup[setup_count].scsiid = conf.cf_id;
3301 setup[setup_count].reconnect = conf.cf_tardisc;
3302 setup[setup_count].parity = !conf.cf_parity;
3303 setup[setup_count].synchronous = conf.cf_syncneg;
3304 setup[setup_count].delay = DELAY_DEFAULT;
3305 setup[setup_count].ext_trans = 0;
3306 setup_count++;
3307
3308 }
3309
3310 if (ok)
3311 printk("auto configuration: ok, ");
3312 }
3313 #endif
3314
3315 printk("%d controller(s) configured\n", setup_count);
3316
3317 for (i=0; i<setup_count; i++) {
3318 if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) {
3319 struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]);
3320
3321 if( !shpnt ) {
3322 release_region(setup[i].io_port, IO_RANGE);
3323 #if defined(__ISAPNP__)
3324 } else if( pnpdev[i] ) {
3325 HOSTDATA(shpnt)->pnpdev=pnpdev[i];
3326 pnpdev[i]=NULL;
3327 #endif
3328 }
3329 } else {
3330 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port);
3331 }
3332
3333 #if defined(__ISAPNP__)
3334 if( pnpdev[i] )
3335 pnp_device_detach(pnpdev[i]);
3336 #endif
3337 }
3338
3339 return 0;
3340 }
3341
3342 static void __exit aha152x_exit(void)
3343 {
3344 struct aha152x_hostdata *hd, *tmp;
3345
3346 list_for_each_entry_safe(hd, tmp, &aha152x_host_list, host_list) {
3347 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
3348
3349 aha152x_release(shost);
3350 }
3351 }
3352
3353 module_init(aha152x_init);
3354 module_exit(aha152x_exit);
3355
3356 #if !defined(MODULE)
3357 static int __init aha152x_setup(char *str)
3358 {
3359 int ints[10];
3360
3361 get_options(str, ARRAY_SIZE(ints), ints);
3362
3363 if(setup_count>=ARRAY_SIZE(setup)) {
3364 printk(KERN_ERR "aha152x: you can only configure up to two controllers\n");
3365 return 1;
3366 }
3367
3368 setup[setup_count].conf = str;
3369 setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340;
3370 setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11;
3371 setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7;
3372 setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1;
3373 setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1;
3374 setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1;
3375 setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT;
3376 setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0;
3377 if (ints[0] > 8) { /*}*/
3378 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
3379 "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n");
3380 } else {
3381 setup_count++;
3382 return 0;
3383 }
3384
3385 return 1;
3386 }
3387 __setup("aha152x=", aha152x_setup);
3388 #endif
3389
3390 #endif /* !PCMCIA */
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