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1/* aha152x.c -- Adaptec AHA-152x driver
2 * Author: Jürgen E. Fischer, fischer@norbit.de
3 * Copyright 1993-2004 Jürgen E. Fischer
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2, or (at your option) any
8 * later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 *
16 * $Id: aha152x.c,v 2.7 2004/01/24 11:42:59 fischer Exp $
17 *
18 * $Log: aha152x.c,v $
19 * Revision 2.7 2004/01/24 11:42:59 fischer
20 * - gather code that is not used by PCMCIA at the end
21 * - move request_region for !PCMCIA case to detection
22 * - migration to new scsi host api (remove legacy code)
23 * - free host scribble before scsi_done
24 * - fix error handling
25 * - one isapnp device added to id_table
26 *
27 * Revision 2.6 2003/10/30 20:52:47 fischer
28 * - interfaces changes for kernel 2.6
29 * - aha152x_probe_one introduced for pcmcia stub
30 * - fixed pnpdev handling
31 * - instead of allocation a new one, reuse command for request sense after check condition and reset
32 * - fixes race in is_complete
33 *
34 * Revision 2.5 2002/04/14 11:24:53 fischer
35 * - isapnp support
36 * - abort fixed
37 * - 2.5 support
38 *
39 * Revision 2.4 2000/12/16 12:53:56 fischer
40 * - allow REQUEST SENSE to be queued
41 * - handle shared PCI interrupts
42 *
43 * Revision 2.3 2000/11/04 16:40:26 fischer
44 * - handle data overruns
45 * - extend timeout for data phases
46 *
47 * Revision 2.2 2000/08/08 19:54:53 fischer
48 * - minor changes
49 *
50 * Revision 2.1 2000/05/17 16:23:17 fischer
51 * - signature update
52 * - fix for data out w/o scatter gather
53 *
54 * Revision 2.0 1999/12/25 15:07:32 fischer
55 * - interrupt routine completly reworked
56 * - basic support for new eh code
57 *
58 * Revision 1.21 1999/11/10 23:46:36 fischer
59 * - default to synchronous operation
60 * - synchronous negotiation fixed
61 * - added timeout to loops
62 * - debugging output can be controlled through procfs
63 *
64 * Revision 1.20 1999/11/07 18:37:31 fischer
65 * - synchronous operation works
66 * - resid support for sg driver
67 *
68 * Revision 1.19 1999/11/02 22:39:59 fischer
69 * - moved leading comments to README.aha152x
70 * - new additional module parameters
71 * - updates for 2.3
72 * - support for the Tripace TC1550 controller
73 * - interrupt handling changed
74 *
75 * Revision 1.18 1996/09/07 20:10:40 fischer
76 * - fixed can_queue handling (multiple outstanding commands working again)
77 *
78 * Revision 1.17 1996/08/17 16:05:14 fischer
79 * - biosparam improved
80 * - interrupt verification
81 * - updated documentation
82 * - cleanups
83 *
84 * Revision 1.16 1996/06/09 00:04:56 root
85 * - added configuration symbols for insmod (aha152x/aha152x1)
86 *
87 * Revision 1.15 1996/04/30 14:52:06 fischer
88 * - proc info fixed
89 * - support for extended translation for >1GB disks
90 *
91 * Revision 1.14 1996/01/17 15:11:20 fischer
92 * - fixed lockup in MESSAGE IN phase after reconnection
93 *
94 * Revision 1.13 1996/01/09 02:15:53 fischer
95 * - some cleanups
96 * - moved request_irq behind controller initialization
97 * (to avoid spurious interrupts)
98 *
99 * Revision 1.12 1995/12/16 12:26:07 fischer
100 * - barrier()s added
101 * - configurable RESET delay added
102 *
103 * Revision 1.11 1995/12/06 21:18:35 fischer
104 * - some minor updates
105 *
106 * Revision 1.10 1995/07/22 19:18:45 fischer
107 * - support for 2 controllers
108 * - started synchronous data transfers (not working yet)
109 *
110 * Revision 1.9 1995/03/18 09:20:24 root
111 * - patches for PCMCIA and modules
112 *
113 * Revision 1.8 1995/01/21 22:07:19 root
114 * - snarf_region => request_region
115 * - aha152x_intr interface change
116 *
117 * Revision 1.7 1995/01/02 23:19:36 root
118 * - updated COMMAND_SIZE to cmd_len
119 * - changed sti() to restore_flags()
120 * - fixed some #ifdef which generated warnings
121 *
122 * Revision 1.6 1994/11/24 20:35:27 root
123 * - problem with odd number of bytes in fifo fixed
124 *
125 * Revision 1.5 1994/10/30 14:39:56 root
126 * - abort code fixed
127 * - debugging improved
128 *
129 * Revision 1.4 1994/09/12 11:33:01 root
130 * - irqaction to request_irq
131 * - abortion updated
132 *
133 * Revision 1.3 1994/08/04 13:53:05 root
134 * - updates for mid-level-driver changes
135 * - accept unexpected BUSFREE phase as error condition
136 * - parity check now configurable
137 *
138 * Revision 1.2 1994/07/03 12:56:36 root
139 * - cleaned up debugging code
140 * - more tweaking on reset delays
141 * - updated abort/reset code (pretty untested...)
142 *
143 * Revision 1.1 1994/05/28 21:18:49 root
144 * - update for mid-level interface change (abort-reset)
145 * - delays after resets adjusted for some slow devices
146 *
147 * Revision 1.0 1994/03/25 12:52:00 root
148 * - Fixed "more data than expected" problem
149 * - added new BIOS signatures
150 *
151 * Revision 0.102 1994/01/31 20:44:12 root
152 * - minor changes in insw/outsw handling
153 *
154 * Revision 0.101 1993/12/13 01:16:27 root
155 * - fixed STATUS phase (non-GOOD stati were dropped sometimes;
156 * fixes problems with CD-ROM sector size detection & media change)
157 *
158 * Revision 0.100 1993/12/10 16:58:47 root
159 * - fix for unsuccessful selections in case of non-continuous id assignments
160 * on the scsi bus.
161 *
162 * Revision 0.99 1993/10/24 16:19:59 root
163 * - fixed DATA IN (rare read errors gone)
164 *
165 * Revision 0.98 1993/10/17 12:54:44 root
166 * - fixed some recent fixes (shame on me)
167 * - moved initialization of scratch area to aha152x_queue
168 *
169 * Revision 0.97 1993/10/09 18:53:53 root
170 * - DATA IN fixed. Rarely left data in the fifo.
171 *
172 * Revision 0.96 1993/10/03 00:53:59 root
173 * - minor changes on DATA IN
174 *
175 * Revision 0.95 1993/09/24 10:36:01 root
176 * - change handling of MSGI after reselection
177 * - fixed sti/cli
178 * - minor changes
179 *
180 * Revision 0.94 1993/09/18 14:08:22 root
181 * - fixed bug in multiple outstanding command code
182 * - changed detection
183 * - support for kernel command line configuration
184 * - reset corrected
185 * - changed message handling
186 *
187 * Revision 0.93 1993/09/15 20:41:19 root
188 * - fixed bugs with multiple outstanding commands
189 *
190 * Revision 0.92 1993/09/13 02:46:33 root
191 * - multiple outstanding commands work (no problems with IBM drive)
192 *
193 * Revision 0.91 1993/09/12 20:51:46 root
194 * added multiple outstanding commands
195 * (some problem with this $%&? IBM device remain)
196 *
197 * Revision 0.9 1993/09/12 11:11:22 root
198 * - corrected auto-configuration
199 * - changed the auto-configuration (added some '#define's)
200 * - added support for dis-/reconnection
201 *
202 * Revision 0.8 1993/09/06 23:09:39 root
203 * - added support for the drive activity light
204 * - minor changes
205 *
206 * Revision 0.7 1993/09/05 14:30:15 root
207 * - improved phase detection
208 * - now using the new snarf_region code of 0.99pl13
209 *
210 * Revision 0.6 1993/09/02 11:01:38 root
211 * first public release; added some signatures and biosparam()
212 *
213 * Revision 0.5 1993/08/30 10:23:30 root
214 * fixed timing problems with my IBM drive
215 *
216 * Revision 0.4 1993/08/29 14:06:52 root
217 * fixed some problems with timeouts due incomplete commands
218 *
219 * Revision 0.3 1993/08/28 15:55:03 root
220 * writing data works too. mounted and worked on a dos partition
221 *
222 * Revision 0.2 1993/08/27 22:42:07 root
223 * reading data works. Mounted a msdos partition.
224 *
225 * Revision 0.1 1993/08/25 13:38:30 root
226 * first "damn thing doesn't work" version
227 *
228 * Revision 0.0 1993/08/14 19:54:25 root
229 * empty function bodies; detect() works.
230 *
231 *
232 **************************************************************************
233
234 see Documentation/scsi/aha152x.txt for configuration details
235
236 **************************************************************************/
237
238#include <linux/module.h>
239#include <asm/irq.h>
240#include <linux/io.h>
241#include <linux/blkdev.h>
242#include <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
266static LIST_HEAD(aha152x_host_list);
267
268
269/* DEFINES */
270
271/* For PCMCIA cards, always use AUTOCONF */
272#if defined(PCMCIA) || defined(MODULE)
273#if !defined(AUTOCONF)
274#define AUTOCONF
275#endif
276#endif
277
278#if !defined(AUTOCONF) && !defined(SETUP0)
279#error define AUTOCONF or SETUP0
280#endif
281
282#if defined(AHA152X_DEBUG)
283#define DEBUG_DEFAULT debug_eh
284
285#define DPRINTK(when,msgs...) \
286 do { if(HOSTDATA(shpnt)->debug & (when)) printk(msgs); } while(0)
287
288#define DO_LOCK(flags) \
289 do { \
290 if(spin_is_locked(&QLOCK)) { \
291 DPRINTK(debug_intr, DEBUG_LEAD "(%s:%d) already locked at %s:%d\n", CMDINFO(CURRENT_SC), __func__, __LINE__, QLOCKER, QLOCKERL); \
292 } \
293 DPRINTK(debug_locking, DEBUG_LEAD "(%s:%d) locking\n", CMDINFO(CURRENT_SC), __func__, __LINE__); \
294 spin_lock_irqsave(&QLOCK,flags); \
295 DPRINTK(debug_locking, DEBUG_LEAD "(%s:%d) locked\n", CMDINFO(CURRENT_SC), __func__, __LINE__); \
296 QLOCKER=__func__; \
297 QLOCKERL=__LINE__; \
298 } while(0)
299
300#define DO_UNLOCK(flags) \
301 do { \
302 DPRINTK(debug_locking, DEBUG_LEAD "(%s:%d) unlocking (locked at %s:%d)\n", CMDINFO(CURRENT_SC), __func__, __LINE__, QLOCKER, QLOCKERL); \
303 spin_unlock_irqrestore(&QLOCK,flags); \
304 DPRINTK(debug_locking, DEBUG_LEAD "(%s:%d) unlocked\n", CMDINFO(CURRENT_SC), __func__, __LINE__); \
305 QLOCKER="(not locked)"; \
306 QLOCKERL=0; \
307 } while(0)
308
309#else
310#define DPRINTK(when,msgs...)
311#define DO_LOCK(flags) spin_lock_irqsave(&QLOCK,flags)
312#define DO_UNLOCK(flags) spin_unlock_irqrestore(&QLOCK,flags)
313#endif
314
315#define LEAD "(scsi%d:%d:%d) "
316#define WARN_LEAD KERN_WARNING LEAD
317#define INFO_LEAD KERN_INFO LEAD
318#define NOTE_LEAD KERN_NOTICE LEAD
319#define ERR_LEAD KERN_ERR LEAD
320#define DEBUG_LEAD KERN_DEBUG LEAD
321#define CMDINFO(cmd) \
322 (cmd) ? ((cmd)->device->host->host_no) : -1, \
323 (cmd) ? ((cmd)->device->id & 0x0f) : -1, \
324 (cmd) ? ((cmd)->device->lun & 0x07) : -1
325
326static inline void
327CMD_INC_RESID(struct scsi_cmnd *cmd, int inc)
328{
329 scsi_set_resid(cmd, scsi_get_resid(cmd) + inc);
330}
331
332#define DELAY_DEFAULT 1000
333
334#if defined(PCMCIA)
335#define IRQ_MIN 0
336#define IRQ_MAX 16
337#else
338#define IRQ_MIN 9
339#if defined(__PPC)
340#define IRQ_MAX (nr_irqs-1)
341#else
342#define IRQ_MAX 12
343#endif
344#endif
345
346enum {
347 not_issued = 0x0001, /* command not yet issued */
348 selecting = 0x0002, /* target is beeing selected */
349 identified = 0x0004, /* IDENTIFY was sent */
350 disconnected = 0x0008, /* target disconnected */
351 completed = 0x0010, /* target sent COMMAND COMPLETE */
352 aborted = 0x0020, /* ABORT was sent */
353 resetted = 0x0040, /* BUS DEVICE RESET was sent */
354 spiordy = 0x0080, /* waiting for SPIORDY to raise */
355 syncneg = 0x0100, /* synchronous negotiation in progress */
356 aborting = 0x0200, /* ABORT is pending */
357 resetting = 0x0400, /* BUS DEVICE RESET is pending */
358 check_condition = 0x0800, /* requesting sense after CHECK CONDITION */
359};
360
361MODULE_AUTHOR("Jürgen Fischer");
362MODULE_DESCRIPTION(AHA152X_REVID);
363MODULE_LICENSE("GPL");
364
365#if !defined(PCMCIA)
366#if defined(MODULE)
367static int io[] = {0, 0};
368module_param_array(io, int, NULL, 0);
369MODULE_PARM_DESC(io,"base io address of controller");
370
371static int irq[] = {0, 0};
372module_param_array(irq, int, NULL, 0);
373MODULE_PARM_DESC(irq,"interrupt for controller");
374
375static int scsiid[] = {7, 7};
376module_param_array(scsiid, int, NULL, 0);
377MODULE_PARM_DESC(scsiid,"scsi id of controller");
378
379static int reconnect[] = {1, 1};
380module_param_array(reconnect, int, NULL, 0);
381MODULE_PARM_DESC(reconnect,"allow targets to disconnect");
382
383static int parity[] = {1, 1};
384module_param_array(parity, int, NULL, 0);
385MODULE_PARM_DESC(parity,"use scsi parity");
386
387static int sync[] = {1, 1};
388module_param_array(sync, int, NULL, 0);
389MODULE_PARM_DESC(sync,"use synchronous transfers");
390
391static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT};
392module_param_array(delay, int, NULL, 0);
393MODULE_PARM_DESC(delay,"scsi reset delay");
394
395static int exttrans[] = {0, 0};
396module_param_array(exttrans, int, NULL, 0);
397MODULE_PARM_DESC(exttrans,"use extended translation");
398
399#if !defined(AHA152X_DEBUG)
400static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
401module_param_array(aha152x, int, NULL, 0);
402MODULE_PARM_DESC(aha152x, "parameters for first controller");
403
404static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
405module_param_array(aha152x1, int, NULL, 0);
406MODULE_PARM_DESC(aha152x1, "parameters for second controller");
407#else
408static int debug[] = {DEBUG_DEFAULT, DEBUG_DEFAULT};
409module_param_array(debug, int, NULL, 0);
410MODULE_PARM_DESC(debug, "flags for driver debugging");
411
412static int aha152x[] = {0, 11, 7, 1, 1, 1, DELAY_DEFAULT, 0, DEBUG_DEFAULT};
413module_param_array(aha152x, int, NULL, 0);
414MODULE_PARM_DESC(aha152x, "parameters for first controller");
415
416static int aha152x1[] = {0, 11, 7, 1, 1, 1, DELAY_DEFAULT, 0, DEBUG_DEFAULT};
417module_param_array(aha152x1, int, NULL, 0);
418MODULE_PARM_DESC(aha152x1, "parameters for second controller");
419#endif /* !defined(AHA152X_DEBUG) */
420#endif /* MODULE */
421
422#ifdef __ISAPNP__
423static struct isapnp_device_id id_table[] = {
424 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1502), 0 },
425 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1505), 0 },
426 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1510), 0 },
427 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1515), 0 },
428 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1520), 0 },
429 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2015), 0 },
430 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1522), 0 },
431 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2215), 0 },
432 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1530), 0 },
433 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3015), 0 },
434 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1532), 0 },
435 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3215), 0 },
436 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x6360), 0 },
437 { ISAPNP_DEVICE_SINGLE_END, }
438};
439MODULE_DEVICE_TABLE(isapnp, id_table);
440#endif /* ISAPNP */
441
442#endif /* !PCMCIA */
443
444static struct scsi_host_template aha152x_driver_template;
445
446/*
447 * internal states of the host
448 *
449 */
450enum aha152x_state {
451 idle=0,
452 unknown,
453 seldo,
454 seldi,
455 selto,
456 busfree,
457 msgo,
458 cmd,
459 msgi,
460 status,
461 datai,
462 datao,
463 parerr,
464 rsti,
465 maxstate
466};
467
468/*
469 * current state information of the host
470 *
471 */
472struct aha152x_hostdata {
473 Scsi_Cmnd *issue_SC;
474 /* pending commands to issue */
475
476 Scsi_Cmnd *current_SC;
477 /* current command on the bus */
478
479 Scsi_Cmnd *disconnected_SC;
480 /* commands that disconnected */
481
482 Scsi_Cmnd *done_SC;
483 /* command that was completed */
484
485 spinlock_t lock;
486 /* host lock */
487
488#if defined(AHA152X_DEBUG)
489 const char *locker;
490 /* which function has the lock */
491 int lockerl; /* where did it get it */
492
493 int debug; /* current debugging setting */
494#endif
495
496#if defined(AHA152X_STAT)
497 int total_commands;
498 int disconnections;
499 int busfree_without_any_action;
500 int busfree_without_old_command;
501 int busfree_without_new_command;
502 int busfree_without_done_command;
503 int busfree_with_check_condition;
504 int count[maxstate];
505 int count_trans[maxstate];
506 unsigned long time[maxstate];
507#endif
508
509 int commands; /* current number of commands */
510
511 int reconnect; /* disconnection allowed */
512 int parity; /* parity checking enabled */
513 int synchronous; /* synchronous transferes enabled */
514 int delay; /* reset out delay */
515 int ext_trans; /* extended translation enabled */
516
517 int swint; /* software-interrupt was fired during detect() */
518 int service; /* bh needs to be run */
519 int in_intr; /* bh is running */
520
521 /* current state,
522 previous state,
523 last state different from current state */
524 enum aha152x_state state, prevstate, laststate;
525
526 int target;
527 /* reconnecting target */
528
529 unsigned char syncrate[8];
530 /* current synchronous transfer agreements */
531
532 unsigned char syncneg[8];
533 /* 0: no negotiation;
534 * 1: negotiation in progress;
535 * 2: negotiation completed
536 */
537
538 int cmd_i;
539 /* number of sent bytes of current command */
540
541 int msgi_len;
542 /* number of received message bytes */
543 unsigned char msgi[256];
544 /* received message bytes */
545
546 int msgo_i, msgo_len;
547 /* number of sent bytes and length of current messages */
548 unsigned char msgo[256];
549 /* pending messages */
550
551 int data_len;
552 /* number of sent/received bytes in dataphase */
553
554 unsigned long io_port0;
555 unsigned long io_port1;
556
557#ifdef __ISAPNP__
558 struct pnp_dev *pnpdev;
559#endif
560 struct list_head host_list;
561};
562
563
564/*
565 * host specific command extension
566 *
567 */
568struct aha152x_scdata {
569 Scsi_Cmnd *next; /* next sc in queue */
570 struct completion *done;/* semaphore to block on */
571 struct scsi_eh_save ses;
572};
573
574/* access macros for hostdata */
575
576#define HOSTDATA(shpnt) ((struct aha152x_hostdata *) &shpnt->hostdata)
577
578#define HOSTNO ((shpnt)->host_no)
579
580#define CURRENT_SC (HOSTDATA(shpnt)->current_SC)
581#define DONE_SC (HOSTDATA(shpnt)->done_SC)
582#define ISSUE_SC (HOSTDATA(shpnt)->issue_SC)
583#define DISCONNECTED_SC (HOSTDATA(shpnt)->disconnected_SC)
584#define QLOCK (HOSTDATA(shpnt)->lock)
585#define QLOCKER (HOSTDATA(shpnt)->locker)
586#define QLOCKERL (HOSTDATA(shpnt)->lockerl)
587
588#define STATE (HOSTDATA(shpnt)->state)
589#define PREVSTATE (HOSTDATA(shpnt)->prevstate)
590#define LASTSTATE (HOSTDATA(shpnt)->laststate)
591
592#define RECONN_TARGET (HOSTDATA(shpnt)->target)
593
594#define CMD_I (HOSTDATA(shpnt)->cmd_i)
595
596#define MSGO(i) (HOSTDATA(shpnt)->msgo[i])
597#define MSGO_I (HOSTDATA(shpnt)->msgo_i)
598#define MSGOLEN (HOSTDATA(shpnt)->msgo_len)
599#define ADDMSGO(x) (MSGOLEN<256 ? (void)(MSGO(MSGOLEN++)=x) : aha152x_error(shpnt,"MSGO overflow"))
600
601#define MSGI(i) (HOSTDATA(shpnt)->msgi[i])
602#define MSGILEN (HOSTDATA(shpnt)->msgi_len)
603#define ADDMSGI(x) (MSGILEN<256 ? (void)(MSGI(MSGILEN++)=x) : aha152x_error(shpnt,"MSGI overflow"))
604
605#define DATA_LEN (HOSTDATA(shpnt)->data_len)
606
607#define SYNCRATE (HOSTDATA(shpnt)->syncrate[CURRENT_SC->device->id])
608#define SYNCNEG (HOSTDATA(shpnt)->syncneg[CURRENT_SC->device->id])
609
610#define DELAY (HOSTDATA(shpnt)->delay)
611#define EXT_TRANS (HOSTDATA(shpnt)->ext_trans)
612#define TC1550 (HOSTDATA(shpnt)->tc1550)
613#define RECONNECT (HOSTDATA(shpnt)->reconnect)
614#define PARITY (HOSTDATA(shpnt)->parity)
615#define SYNCHRONOUS (HOSTDATA(shpnt)->synchronous)
616
617#define HOSTIOPORT0 (HOSTDATA(shpnt)->io_port0)
618#define HOSTIOPORT1 (HOSTDATA(shpnt)->io_port1)
619
620#define SCDATA(SCpnt) ((struct aha152x_scdata *) (SCpnt)->host_scribble)
621#define SCNEXT(SCpnt) SCDATA(SCpnt)->next
622#define SCSEM(SCpnt) SCDATA(SCpnt)->done
623
624#define SG_ADDRESS(buffer) ((char *) sg_virt((buffer)))
625
626/* state handling */
627static void seldi_run(struct Scsi_Host *shpnt);
628static void seldo_run(struct Scsi_Host *shpnt);
629static void selto_run(struct Scsi_Host *shpnt);
630static void busfree_run(struct Scsi_Host *shpnt);
631
632static void msgo_init(struct Scsi_Host *shpnt);
633static void msgo_run(struct Scsi_Host *shpnt);
634static void msgo_end(struct Scsi_Host *shpnt);
635
636static void cmd_init(struct Scsi_Host *shpnt);
637static void cmd_run(struct Scsi_Host *shpnt);
638static void cmd_end(struct Scsi_Host *shpnt);
639
640static void datai_init(struct Scsi_Host *shpnt);
641static void datai_run(struct Scsi_Host *shpnt);
642static void datai_end(struct Scsi_Host *shpnt);
643
644static void datao_init(struct Scsi_Host *shpnt);
645static void datao_run(struct Scsi_Host *shpnt);
646static void datao_end(struct Scsi_Host *shpnt);
647
648static void status_run(struct Scsi_Host *shpnt);
649
650static void msgi_run(struct Scsi_Host *shpnt);
651static void msgi_end(struct Scsi_Host *shpnt);
652
653static void parerr_run(struct Scsi_Host *shpnt);
654static void rsti_run(struct Scsi_Host *shpnt);
655
656static void is_complete(struct Scsi_Host *shpnt);
657
658/*
659 * driver states
660 *
661 */
662static struct {
663 char *name;
664 void (*init)(struct Scsi_Host *);
665 void (*run)(struct Scsi_Host *);
666 void (*end)(struct Scsi_Host *);
667 int spio;
668} states[] = {
669 { "idle", NULL, NULL, NULL, 0},
670 { "unknown", NULL, NULL, NULL, 0},
671 { "seldo", NULL, seldo_run, NULL, 0},
672 { "seldi", NULL, seldi_run, NULL, 0},
673 { "selto", NULL, selto_run, NULL, 0},
674 { "busfree", NULL, busfree_run, NULL, 0},
675 { "msgo", msgo_init, msgo_run, msgo_end, 1},
676 { "cmd", cmd_init, cmd_run, cmd_end, 1},
677 { "msgi", NULL, msgi_run, msgi_end, 1},
678 { "status", NULL, status_run, NULL, 1},
679 { "datai", datai_init, datai_run, datai_end, 0},
680 { "datao", datao_init, datao_run, datao_end, 0},
681 { "parerr", NULL, parerr_run, NULL, 0},
682 { "rsti", NULL, rsti_run, NULL, 0},
683};
684
685/* setup & interrupt */
686static irqreturn_t intr(int irq, void *dev_id);
687static void reset_ports(struct Scsi_Host *shpnt);
688static void aha152x_error(struct Scsi_Host *shpnt, char *msg);
689static void done(struct Scsi_Host *shpnt, int error);
690
691/* diagnostics */
692static void disp_ports(struct Scsi_Host *shpnt);
693static void show_command(Scsi_Cmnd * ptr);
694static void show_queues(struct Scsi_Host *shpnt);
695static void disp_enintr(struct Scsi_Host *shpnt);
696
697
698/*
699 * queue services:
700 *
701 */
702static inline void append_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC)
703{
704 Scsi_Cmnd *end;
705
706 SCNEXT(new_SC) = NULL;
707 if (!*SC)
708 *SC = new_SC;
709 else {
710 for (end = *SC; SCNEXT(end); end = SCNEXT(end))
711 ;
712 SCNEXT(end) = new_SC;
713 }
714}
715
716static inline Scsi_Cmnd *remove_first_SC(Scsi_Cmnd ** SC)
717{
718 Scsi_Cmnd *ptr;
719
720 ptr = *SC;
721 if (ptr) {
722 *SC = SCNEXT(*SC);
723 SCNEXT(ptr)=NULL;
724 }
725 return ptr;
726}
727
728static inline Scsi_Cmnd *remove_lun_SC(Scsi_Cmnd ** SC, int target, int lun)
729{
730 Scsi_Cmnd *ptr, *prev;
731
732 for (ptr = *SC, prev = NULL;
733 ptr && ((ptr->device->id != target) || (ptr->device->lun != lun));
734 prev = ptr, ptr = SCNEXT(ptr))
735 ;
736
737 if (ptr) {
738 if (prev)
739 SCNEXT(prev) = SCNEXT(ptr);
740 else
741 *SC = SCNEXT(ptr);
742
743 SCNEXT(ptr)=NULL;
744 }
745
746 return ptr;
747}
748
749static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, Scsi_Cmnd *SCp)
750{
751 Scsi_Cmnd *ptr, *prev;
752
753 for (ptr = *SC, prev = NULL;
754 ptr && SCp!=ptr;
755 prev = ptr, ptr = SCNEXT(ptr))
756 ;
757
758 if (ptr) {
759 if (prev)
760 SCNEXT(prev) = SCNEXT(ptr);
761 else
762 *SC = SCNEXT(ptr);
763
764 SCNEXT(ptr)=NULL;
765 }
766
767 return ptr;
768}
769
770static irqreturn_t swintr(int irqno, void *dev_id)
771{
772 struct Scsi_Host *shpnt = dev_id;
773
774 HOSTDATA(shpnt)->swint++;
775
776 SETPORT(DMACNTRL0, INTEN);
777 return IRQ_HANDLED;
778}
779
780struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)
781{
782 struct Scsi_Host *shpnt;
783
784 shpnt = scsi_host_alloc(&aha152x_driver_template, sizeof(struct aha152x_hostdata));
785 if (!shpnt) {
786 printk(KERN_ERR "aha152x: scsi_host_alloc failed\n");
787 return NULL;
788 }
789
790 memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt));
791 INIT_LIST_HEAD(&HOSTDATA(shpnt)->host_list);
792
793 /* need to have host registered before triggering any interrupt */
794 list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list);
795
796 shpnt->io_port = setup->io_port;
797 shpnt->n_io_port = IO_RANGE;
798 shpnt->irq = setup->irq;
799
800 if (!setup->tc1550) {
801 HOSTIOPORT0 = setup->io_port;
802 HOSTIOPORT1 = setup->io_port;
803 } else {
804 HOSTIOPORT0 = setup->io_port+0x10;
805 HOSTIOPORT1 = setup->io_port-0x10;
806 }
807
808 spin_lock_init(&QLOCK);
809 RECONNECT = setup->reconnect;
810 SYNCHRONOUS = setup->synchronous;
811 PARITY = setup->parity;
812 DELAY = setup->delay;
813 EXT_TRANS = setup->ext_trans;
814
815#if defined(AHA152X_DEBUG)
816 HOSTDATA(shpnt)->debug = setup->debug;
817#endif
818
819 SETPORT(SCSIID, setup->scsiid << 4);
820 shpnt->this_id = setup->scsiid;
821
822 if (setup->reconnect)
823 shpnt->can_queue = AHA152X_MAXQUEUE;
824
825 /* RESET OUT */
826 printk("aha152x: resetting bus...\n");
827 SETPORT(SCSISEQ, SCSIRSTO);
828 mdelay(256);
829 SETPORT(SCSISEQ, 0);
830 mdelay(DELAY);
831
832 reset_ports(shpnt);
833
834 printk(KERN_INFO
835 "aha152x%d%s: "
836 "vital data: rev=%x, "
837 "io=0x%03lx (0x%03lx/0x%03lx), "
838 "irq=%d, "
839 "scsiid=%d, "
840 "reconnect=%s, "
841 "parity=%s, "
842 "synchronous=%s, "
843 "delay=%d, "
844 "extended translation=%s\n",
845 shpnt->host_no, setup->tc1550 ? " (tc1550 mode)" : "",
846 GETPORT(REV) & 0x7,
847 shpnt->io_port, HOSTIOPORT0, HOSTIOPORT1,
848 shpnt->irq,
849 shpnt->this_id,
850 RECONNECT ? "enabled" : "disabled",
851 PARITY ? "enabled" : "disabled",
852 SYNCHRONOUS ? "enabled" : "disabled",
853 DELAY,
854 EXT_TRANS ? "enabled" : "disabled");
855
856 /* not expecting any interrupts */
857 SETPORT(SIMODE0, 0);
858 SETPORT(SIMODE1, 0);
859
860 if (request_irq(shpnt->irq, swintr, IRQF_SHARED, "aha152x", shpnt)) {
861 printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq);
862 goto out_host_put;
863 }
864
865 HOSTDATA(shpnt)->swint = 0;
866
867 printk(KERN_INFO "aha152x%d: trying software interrupt, ", shpnt->host_no);
868
869 mb();
870 SETPORT(DMACNTRL0, SWINT|INTEN);
871 mdelay(1000);
872 free_irq(shpnt->irq, shpnt);
873
874 if (!HOSTDATA(shpnt)->swint) {
875 if (TESTHI(DMASTAT, INTSTAT)) {
876 printk("lost.\n");
877 } else {
878 printk("failed.\n");
879 }
880
881 SETPORT(DMACNTRL0, INTEN);
882
883 printk(KERN_ERR "aha152x%d: irq %d possibly wrong. "
884 "Please verify.\n", shpnt->host_no, shpnt->irq);
885 goto out_host_put;
886 }
887 printk("ok.\n");
888
889
890 /* clear interrupts */
891 SETPORT(SSTAT0, 0x7f);
892 SETPORT(SSTAT1, 0xef);
893
894 if (request_irq(shpnt->irq, intr, IRQF_SHARED, "aha152x", shpnt)) {
895 printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq);
896 goto out_host_put;
897 }
898
899 if( scsi_add_host(shpnt, NULL) ) {
900 free_irq(shpnt->irq, shpnt);
901 printk(KERN_ERR "aha152x%d: failed to add host.\n", shpnt->host_no);
902 goto out_host_put;
903 }
904
905 scsi_scan_host(shpnt);
906
907 return shpnt;
908
909out_host_put:
910 list_del(&HOSTDATA(shpnt)->host_list);
911 scsi_host_put(shpnt);
912
913 return NULL;
914}
915
916void aha152x_release(struct Scsi_Host *shpnt)
917{
918 if (!shpnt)
919 return;
920
921 scsi_remove_host(shpnt);
922 if (shpnt->irq)
923 free_irq(shpnt->irq, shpnt);
924
925#if !defined(PCMCIA)
926 if (shpnt->io_port)
927 release_region(shpnt->io_port, IO_RANGE);
928#endif
929
930#ifdef __ISAPNP__
931 if (HOSTDATA(shpnt)->pnpdev)
932 pnp_device_detach(HOSTDATA(shpnt)->pnpdev);
933#endif
934
935 list_del(&HOSTDATA(shpnt)->host_list);
936 scsi_host_put(shpnt);
937}
938
939
940/*
941 * setup controller to generate interrupts depending
942 * on current state (lock has to be acquired)
943 *
944 */
945static int setup_expected_interrupts(struct Scsi_Host *shpnt)
946{
947 if(CURRENT_SC) {
948 CURRENT_SC->SCp.phase |= 1 << 16;
949
950 if(CURRENT_SC->SCp.phase & selecting) {
951 DPRINTK(debug_intr, DEBUG_LEAD "expecting: (seldo) (seltimo) (seldi)\n", CMDINFO(CURRENT_SC));
952 SETPORT(SSTAT1, SELTO);
953 SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0));
954 SETPORT(SIMODE1, ENSELTIMO);
955 } else {
956 DPRINTK(debug_intr, DEBUG_LEAD "expecting: (phase change) (busfree) %s\n", CMDINFO(CURRENT_SC), CURRENT_SC->SCp.phase & spiordy ? "(spiordy)" : "");
957 SETPORT(SIMODE0, (CURRENT_SC->SCp.phase & spiordy) ? ENSPIORDY : 0);
958 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
959 }
960 } else if(STATE==seldi) {
961 DPRINTK(debug_intr, DEBUG_LEAD "expecting: (phase change) (identify)\n", CMDINFO(CURRENT_SC));
962 SETPORT(SIMODE0, 0);
963 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
964 } else {
965 DPRINTK(debug_intr, DEBUG_LEAD "expecting: %s %s\n",
966 CMDINFO(CURRENT_SC),
967 DISCONNECTED_SC ? "(reselection)" : "",
968 ISSUE_SC ? "(busfree)" : "");
969 SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0);
970 SETPORT(SIMODE1, ENSCSIRST | ( (ISSUE_SC||DONE_SC) ? ENBUSFREE : 0));
971 }
972
973 if(!HOSTDATA(shpnt)->in_intr)
974 SETBITS(DMACNTRL0, INTEN);
975
976 return TESTHI(DMASTAT, INTSTAT);
977}
978
979
980/*
981 * Queue a command and setup interrupts for a free bus.
982 */
983static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, struct completion *complete,
984 int phase, void (*done)(Scsi_Cmnd *))
985{
986 struct Scsi_Host *shpnt = SCpnt->device->host;
987 unsigned long flags;
988
989#if defined(AHA152X_DEBUG)
990 if (HOSTDATA(shpnt)->debug & debug_queue) {
991 printk(INFO_LEAD "queue: %p; cmd_len=%d pieces=%d size=%u cmnd=",
992 CMDINFO(SCpnt), SCpnt, SCpnt->cmd_len,
993 scsi_sg_count(SCpnt), scsi_bufflen(SCpnt));
994 __scsi_print_command(SCpnt->cmnd);
995 }
996#endif
997
998 SCpnt->scsi_done = done;
999 SCpnt->SCp.phase = not_issued | phase;
1000 SCpnt->SCp.Status = 0x1; /* Ilegal status by SCSI standard */
1001 SCpnt->SCp.Message = 0;
1002 SCpnt->SCp.have_data_in = 0;
1003 SCpnt->SCp.sent_command = 0;
1004
1005 if(SCpnt->SCp.phase & (resetting|check_condition)) {
1006 if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) {
1007 printk(ERR_LEAD "cannot reuse command\n", CMDINFO(SCpnt));
1008 return FAILED;
1009 }
1010 } else {
1011 SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC);
1012 if(!SCpnt->host_scribble) {
1013 printk(ERR_LEAD "allocation failed\n", CMDINFO(SCpnt));
1014 return FAILED;
1015 }
1016 }
1017
1018 SCNEXT(SCpnt) = NULL;
1019 SCSEM(SCpnt) = complete;
1020
1021 /* setup scratch area
1022 SCp.ptr : buffer pointer
1023 SCp.this_residual : buffer length
1024 SCp.buffer : next buffer
1025 SCp.buffers_residual : left buffers in list
1026 SCp.phase : current state of the command */
1027
1028 if ((phase & resetting) || !scsi_sglist(SCpnt)) {
1029 SCpnt->SCp.ptr = NULL;
1030 SCpnt->SCp.this_residual = 0;
1031 scsi_set_resid(SCpnt, 0);
1032 SCpnt->SCp.buffer = NULL;
1033 SCpnt->SCp.buffers_residual = 0;
1034 } else {
1035 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
1036 SCpnt->SCp.buffer = scsi_sglist(SCpnt);
1037 SCpnt->SCp.ptr = SG_ADDRESS(SCpnt->SCp.buffer);
1038 SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length;
1039 SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1;
1040 }
1041
1042 DO_LOCK(flags);
1043
1044#if defined(AHA152X_STAT)
1045 HOSTDATA(shpnt)->total_commands++;
1046#endif
1047
1048 /* Turn led on, when this is the first command. */
1049 HOSTDATA(shpnt)->commands++;
1050 if (HOSTDATA(shpnt)->commands==1)
1051 SETPORT(PORTA, 1);
1052
1053 append_SC(&ISSUE_SC, SCpnt);
1054
1055 if(!HOSTDATA(shpnt)->in_intr)
1056 setup_expected_interrupts(shpnt);
1057
1058 DO_UNLOCK(flags);
1059
1060 return 0;
1061}
1062
1063/*
1064 * queue a command
1065 *
1066 */
1067static int aha152x_queue_lck(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
1068{
1069#if 0
1070 if(*SCpnt->cmnd == REQUEST_SENSE) {
1071 SCpnt->result = 0;
1072 done(SCpnt);
1073
1074 return 0;
1075 }
1076#endif
1077
1078 return aha152x_internal_queue(SCpnt, NULL, 0, done);
1079}
1080
1081static DEF_SCSI_QCMD(aha152x_queue)
1082
1083
1084/*
1085 *
1086 *
1087 */
1088static void reset_done(Scsi_Cmnd *SCpnt)
1089{
1090#if 0
1091 struct Scsi_Host *shpnt = SCpnt->host;
1092 DPRINTK(debug_eh, INFO_LEAD "reset_done called\n", CMDINFO(SCpnt));
1093#endif
1094 if(SCSEM(SCpnt)) {
1095 complete(SCSEM(SCpnt));
1096 } else {
1097 printk(KERN_ERR "aha152x: reset_done w/o completion\n");
1098 }
1099}
1100
1101/*
1102 * Abort a command
1103 *
1104 */
1105static int aha152x_abort(Scsi_Cmnd *SCpnt)
1106{
1107 struct Scsi_Host *shpnt = SCpnt->device->host;
1108 Scsi_Cmnd *ptr;
1109 unsigned long flags;
1110
1111#if defined(AHA152X_DEBUG)
1112 if(HOSTDATA(shpnt)->debug & debug_eh) {
1113 printk(DEBUG_LEAD "abort(%p)", CMDINFO(SCpnt), SCpnt);
1114 show_queues(shpnt);
1115 }
1116#endif
1117
1118 DO_LOCK(flags);
1119
1120 ptr=remove_SC(&ISSUE_SC, SCpnt);
1121
1122 if(ptr) {
1123 DPRINTK(debug_eh, DEBUG_LEAD "not yet issued - SUCCESS\n", CMDINFO(SCpnt));
1124
1125 HOSTDATA(shpnt)->commands--;
1126 if (!HOSTDATA(shpnt)->commands)
1127 SETPORT(PORTA, 0);
1128 DO_UNLOCK(flags);
1129
1130 kfree(SCpnt->host_scribble);
1131 SCpnt->host_scribble=NULL;
1132
1133 return SUCCESS;
1134 }
1135
1136 DO_UNLOCK(flags);
1137
1138 /*
1139 * FIXME:
1140 * for current command: queue ABORT for message out and raise ATN
1141 * for disconnected command: pseudo SC with ABORT message or ABORT on reselection?
1142 *
1143 */
1144
1145 printk(ERR_LEAD "cannot abort running or disconnected command\n", CMDINFO(SCpnt));
1146
1147 return FAILED;
1148}
1149
1150/*
1151 * Reset a device
1152 *
1153 */
1154static int aha152x_device_reset(Scsi_Cmnd * SCpnt)
1155{
1156 struct Scsi_Host *shpnt = SCpnt->device->host;
1157 DECLARE_COMPLETION(done);
1158 int ret, issued, disconnected;
1159 unsigned char old_cmd_len = SCpnt->cmd_len;
1160 unsigned long flags;
1161 unsigned long timeleft;
1162
1163#if defined(AHA152X_DEBUG)
1164 if(HOSTDATA(shpnt)->debug & debug_eh) {
1165 printk(INFO_LEAD "aha152x_device_reset(%p)", CMDINFO(SCpnt), SCpnt);
1166 show_queues(shpnt);
1167 }
1168#endif
1169
1170 if(CURRENT_SC==SCpnt) {
1171 printk(ERR_LEAD "cannot reset current device\n", CMDINFO(SCpnt));
1172 return FAILED;
1173 }
1174
1175 DO_LOCK(flags);
1176 issued = remove_SC(&ISSUE_SC, SCpnt) == NULL;
1177 disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt);
1178 DO_UNLOCK(flags);
1179
1180 SCpnt->cmd_len = 0;
1181
1182 aha152x_internal_queue(SCpnt, &done, resetting, reset_done);
1183
1184 timeleft = wait_for_completion_timeout(&done, 100*HZ);
1185 if (!timeleft) {
1186 /* remove command from issue queue */
1187 DO_LOCK(flags);
1188 remove_SC(&ISSUE_SC, SCpnt);
1189 DO_UNLOCK(flags);
1190 }
1191
1192 SCpnt->cmd_len = old_cmd_len;
1193
1194 DO_LOCK(flags);
1195
1196 if(SCpnt->SCp.phase & resetted) {
1197 HOSTDATA(shpnt)->commands--;
1198 if (!HOSTDATA(shpnt)->commands)
1199 SETPORT(PORTA, 0);
1200 kfree(SCpnt->host_scribble);
1201 SCpnt->host_scribble=NULL;
1202
1203 ret = SUCCESS;
1204 } else {
1205 /* requeue */
1206 if(!issued) {
1207 append_SC(&ISSUE_SC, SCpnt);
1208 } else if(disconnected) {
1209 append_SC(&DISCONNECTED_SC, SCpnt);
1210 }
1211
1212 ret = FAILED;
1213 }
1214
1215 DO_UNLOCK(flags);
1216 return ret;
1217}
1218
1219static void free_hard_reset_SCs(struct Scsi_Host *shpnt, Scsi_Cmnd **SCs)
1220{
1221 Scsi_Cmnd *ptr;
1222
1223 ptr=*SCs;
1224 while(ptr) {
1225 Scsi_Cmnd *next;
1226
1227 if(SCDATA(ptr)) {
1228 next = SCNEXT(ptr);
1229 } else {
1230 printk(DEBUG_LEAD "queue corrupted at %p\n", CMDINFO(ptr), ptr);
1231 next = NULL;
1232 }
1233
1234 if (!ptr->device->soft_reset) {
1235 DPRINTK(debug_eh, DEBUG_LEAD "disconnected command %p removed\n", CMDINFO(ptr), ptr);
1236 remove_SC(SCs, ptr);
1237 HOSTDATA(shpnt)->commands--;
1238 kfree(ptr->host_scribble);
1239 ptr->host_scribble=NULL;
1240 }
1241
1242 ptr = next;
1243 }
1244}
1245
1246/*
1247 * Reset the bus
1248 *
1249 */
1250static int aha152x_bus_reset_host(struct Scsi_Host *shpnt)
1251{
1252 unsigned long flags;
1253
1254 DO_LOCK(flags);
1255
1256#if defined(AHA152X_DEBUG)
1257 if(HOSTDATA(shpnt)->debug & debug_eh) {
1258 printk(KERN_DEBUG "scsi%d: bus reset", shpnt->host_no);
1259 show_queues(shpnt);
1260 }
1261#endif
1262
1263 free_hard_reset_SCs(shpnt, &ISSUE_SC);
1264 free_hard_reset_SCs(shpnt, &DISCONNECTED_SC);
1265
1266 DPRINTK(debug_eh, KERN_DEBUG "scsi%d: resetting bus\n", shpnt->host_no);
1267
1268 SETPORT(SCSISEQ, SCSIRSTO);
1269 mdelay(256);
1270 SETPORT(SCSISEQ, 0);
1271 mdelay(DELAY);
1272
1273 DPRINTK(debug_eh, KERN_DEBUG "scsi%d: bus resetted\n", shpnt->host_no);
1274
1275 setup_expected_interrupts(shpnt);
1276 if(HOSTDATA(shpnt)->commands==0)
1277 SETPORT(PORTA, 0);
1278
1279 DO_UNLOCK(flags);
1280
1281 return SUCCESS;
1282}
1283
1284/*
1285 * Reset the bus
1286 *
1287 */
1288static int aha152x_bus_reset(Scsi_Cmnd *SCpnt)
1289{
1290 return aha152x_bus_reset_host(SCpnt->device->host);
1291}
1292
1293/*
1294 * Restore default values to the AIC-6260 registers and reset the fifos
1295 *
1296 */
1297static void reset_ports(struct Scsi_Host *shpnt)
1298{
1299 unsigned long flags;
1300
1301 /* disable interrupts */
1302 SETPORT(DMACNTRL0, RSTFIFO);
1303
1304 SETPORT(SCSISEQ, 0);
1305
1306 SETPORT(SXFRCTL1, 0);
1307 SETPORT(SCSISIG, 0);
1308 SETRATE(0);
1309
1310 /* clear all interrupt conditions */
1311 SETPORT(SSTAT0, 0x7f);
1312 SETPORT(SSTAT1, 0xef);
1313
1314 SETPORT(SSTAT4, SYNCERR | FWERR | FRERR);
1315
1316 SETPORT(DMACNTRL0, 0);
1317 SETPORT(DMACNTRL1, 0);
1318
1319 SETPORT(BRSTCNTRL, 0xf1);
1320
1321 /* clear SCSI fifos and transfer count */
1322 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1323 SETPORT(SXFRCTL0, CH1);
1324
1325 DO_LOCK(flags);
1326 setup_expected_interrupts(shpnt);
1327 DO_UNLOCK(flags);
1328}
1329
1330/*
1331 * Reset the host (bus and controller)
1332 *
1333 */
1334int aha152x_host_reset_host(struct Scsi_Host *shpnt)
1335{
1336 DPRINTK(debug_eh, KERN_DEBUG "scsi%d: host reset\n", shpnt->host_no);
1337
1338 aha152x_bus_reset_host(shpnt);
1339
1340 DPRINTK(debug_eh, KERN_DEBUG "scsi%d: resetting ports\n", shpnt->host_no);
1341 reset_ports(shpnt);
1342
1343 return SUCCESS;
1344}
1345
1346/*
1347 * Reset the host (bus and controller)
1348 *
1349 */
1350static int aha152x_host_reset(Scsi_Cmnd *SCpnt)
1351{
1352 return aha152x_host_reset_host(SCpnt->device->host);
1353}
1354
1355/*
1356 * Return the "logical geometry"
1357 *
1358 */
1359static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev,
1360 sector_t capacity, int *info_array)
1361{
1362 struct Scsi_Host *shpnt = sdev->host;
1363
1364 /* try default translation */
1365 info_array[0] = 64;
1366 info_array[1] = 32;
1367 info_array[2] = (unsigned long)capacity / (64 * 32);
1368
1369 /* for disks >1GB do some guessing */
1370 if (info_array[2] >= 1024) {
1371 int info[3];
1372
1373 /* try to figure out the geometry from the partition table */
1374 if (scsicam_bios_param(bdev, capacity, info) < 0 ||
1375 !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) {
1376 if (EXT_TRANS) {
1377 printk(KERN_NOTICE
1378 "aha152x: unable to verify geometry for disk with >1GB.\n"
1379 " using extended translation.\n");
1380 info_array[0] = 255;
1381 info_array[1] = 63;
1382 info_array[2] = (unsigned long)capacity / (255 * 63);
1383 } else {
1384 printk(KERN_NOTICE
1385 "aha152x: unable to verify geometry for disk with >1GB.\n"
1386 " Using default translation. Please verify yourself.\n"
1387 " Perhaps you need to enable extended translation in the driver.\n"
1388 " See Documentation/scsi/aha152x.txt for details.\n");
1389 }
1390 } else {
1391 info_array[0] = info[0];
1392 info_array[1] = info[1];
1393 info_array[2] = info[2];
1394
1395 if (info[0] == 255 && !EXT_TRANS) {
1396 printk(KERN_NOTICE
1397 "aha152x: current partition table is using extended translation.\n"
1398 " using it also, although it's not explicitly enabled.\n");
1399 }
1400 }
1401 }
1402
1403 return 0;
1404}
1405
1406/*
1407 * Internal done function
1408 *
1409 */
1410static void done(struct Scsi_Host *shpnt, int error)
1411{
1412 if (CURRENT_SC) {
1413 if(DONE_SC)
1414 printk(ERR_LEAD "there's already a completed command %p - will cause abort\n", CMDINFO(CURRENT_SC), DONE_SC);
1415
1416 DONE_SC = CURRENT_SC;
1417 CURRENT_SC = NULL;
1418 DONE_SC->result = error;
1419 } else
1420 printk(KERN_ERR "aha152x: done() called outside of command\n");
1421}
1422
1423static struct work_struct aha152x_tq;
1424
1425/*
1426 * Run service completions on the card with interrupts enabled.
1427 *
1428 */
1429static void run(struct work_struct *work)
1430{
1431 struct aha152x_hostdata *hd;
1432
1433 list_for_each_entry(hd, &aha152x_host_list, host_list) {
1434 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
1435
1436 is_complete(shost);
1437 }
1438}
1439
1440/*
1441 * Interrupt handler
1442 *
1443 */
1444static irqreturn_t intr(int irqno, void *dev_id)
1445{
1446 struct Scsi_Host *shpnt = dev_id;
1447 unsigned long flags;
1448 unsigned char rev, dmacntrl0;
1449
1450 /*
1451 * Read a couple of registers that are known to not be all 1's. If
1452 * we read all 1's (-1), that means that either:
1453 *
1454 * a. The host adapter chip has gone bad, and we cannot control it,
1455 * OR
1456 * b. The host adapter is a PCMCIA card that has been ejected
1457 *
1458 * In either case, we cannot do anything with the host adapter at
1459 * this point in time. So just ignore the interrupt and return.
1460 * In the latter case, the interrupt might actually be meant for
1461 * someone else sharing this IRQ, and that driver will handle it.
1462 */
1463 rev = GETPORT(REV);
1464 dmacntrl0 = GETPORT(DMACNTRL0);
1465 if ((rev == 0xFF) && (dmacntrl0 == 0xFF))
1466 return IRQ_NONE;
1467
1468 if( TESTLO(DMASTAT, INTSTAT) )
1469 return IRQ_NONE;
1470
1471 /* no more interrupts from the controller, while we're busy.
1472 INTEN is restored by the BH handler */
1473 CLRBITS(DMACNTRL0, INTEN);
1474
1475 DO_LOCK(flags);
1476 if( HOSTDATA(shpnt)->service==0 ) {
1477 HOSTDATA(shpnt)->service=1;
1478
1479 /* Poke the BH handler */
1480 INIT_WORK(&aha152x_tq, run);
1481 schedule_work(&aha152x_tq);
1482 }
1483 DO_UNLOCK(flags);
1484
1485 return IRQ_HANDLED;
1486}
1487
1488/*
1489 * busfree phase
1490 * - handle completition/disconnection/error of current command
1491 * - start selection for next command (if any)
1492 */
1493static void busfree_run(struct Scsi_Host *shpnt)
1494{
1495 unsigned long flags;
1496#if defined(AHA152X_STAT)
1497 int action=0;
1498#endif
1499
1500 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1501 SETPORT(SXFRCTL0, CH1);
1502
1503 SETPORT(SSTAT1, CLRBUSFREE);
1504
1505 if(CURRENT_SC) {
1506#if defined(AHA152X_STAT)
1507 action++;
1508#endif
1509 CURRENT_SC->SCp.phase &= ~syncneg;
1510
1511 if(CURRENT_SC->SCp.phase & completed) {
1512 /* target sent COMMAND COMPLETE */
1513 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16));
1514
1515 } else if(CURRENT_SC->SCp.phase & aborted) {
1516 DPRINTK(debug_eh, DEBUG_LEAD "ABORT sent\n", CMDINFO(CURRENT_SC));
1517 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_ABORT << 16));
1518
1519 } else if(CURRENT_SC->SCp.phase & resetted) {
1520 DPRINTK(debug_eh, DEBUG_LEAD "BUS DEVICE RESET sent\n", CMDINFO(CURRENT_SC));
1521 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_RESET << 16));
1522
1523 } else if(CURRENT_SC->SCp.phase & disconnected) {
1524 /* target sent DISCONNECT */
1525 DPRINTK(debug_selection, DEBUG_LEAD "target disconnected at %d/%d\n",
1526 CMDINFO(CURRENT_SC),
1527 scsi_get_resid(CURRENT_SC),
1528 scsi_bufflen(CURRENT_SC));
1529#if defined(AHA152X_STAT)
1530 HOSTDATA(shpnt)->disconnections++;
1531#endif
1532 append_SC(&DISCONNECTED_SC, CURRENT_SC);
1533 CURRENT_SC->SCp.phase |= 1 << 16;
1534 CURRENT_SC = NULL;
1535
1536 } else {
1537 done(shpnt, DID_ERROR << 16);
1538 }
1539#if defined(AHA152X_STAT)
1540 } else {
1541 HOSTDATA(shpnt)->busfree_without_old_command++;
1542#endif
1543 }
1544
1545 DO_LOCK(flags);
1546
1547 if(DONE_SC) {
1548#if defined(AHA152X_STAT)
1549 action++;
1550#endif
1551
1552 if(DONE_SC->SCp.phase & check_condition) {
1553 struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC;
1554 struct aha152x_scdata *sc = SCDATA(cmd);
1555
1556#if 0
1557 if(HOSTDATA(shpnt)->debug & debug_eh) {
1558 printk(ERR_LEAD "received sense: ", CMDINFO(DONE_SC));
1559 scsi_print_sense("bh", DONE_SC);
1560 }
1561#endif
1562
1563 scsi_eh_restore_cmnd(cmd, &sc->ses);
1564
1565 cmd->SCp.Status = SAM_STAT_CHECK_CONDITION;
1566
1567 HOSTDATA(shpnt)->commands--;
1568 if (!HOSTDATA(shpnt)->commands)
1569 SETPORT(PORTA, 0); /* turn led off */
1570 } else if(DONE_SC->SCp.Status==SAM_STAT_CHECK_CONDITION) {
1571#if defined(AHA152X_STAT)
1572 HOSTDATA(shpnt)->busfree_with_check_condition++;
1573#endif
1574#if 0
1575 DPRINTK(debug_eh, ERR_LEAD "CHECK CONDITION found\n", CMDINFO(DONE_SC));
1576#endif
1577
1578 if(!(DONE_SC->SCp.phase & not_issued)) {
1579 struct aha152x_scdata *sc;
1580 Scsi_Cmnd *ptr = DONE_SC;
1581 DONE_SC=NULL;
1582#if 0
1583 DPRINTK(debug_eh, ERR_LEAD "requesting sense\n", CMDINFO(ptr));
1584#endif
1585
1586 sc = SCDATA(ptr);
1587 /* It was allocated in aha152x_internal_queue? */
1588 BUG_ON(!sc);
1589 scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0);
1590
1591 DO_UNLOCK(flags);
1592 aha152x_internal_queue(ptr, NULL, check_condition, ptr->scsi_done);
1593 DO_LOCK(flags);
1594#if 0
1595 } else {
1596 DPRINTK(debug_eh, ERR_LEAD "command not issued - CHECK CONDITION ignored\n", CMDINFO(DONE_SC));
1597#endif
1598 }
1599 }
1600
1601 if(DONE_SC && DONE_SC->scsi_done) {
1602#if defined(AHA152X_DEBUG)
1603 int hostno=DONE_SC->device->host->host_no;
1604 int id=DONE_SC->device->id & 0xf;
1605 int lun=DONE_SC->device->lun & 0x7;
1606#endif
1607 Scsi_Cmnd *ptr = DONE_SC;
1608 DONE_SC=NULL;
1609
1610 /* turn led off, when no commands are in the driver */
1611 HOSTDATA(shpnt)->commands--;
1612 if (!HOSTDATA(shpnt)->commands)
1613 SETPORT(PORTA, 0); /* turn led off */
1614
1615 if(ptr->scsi_done != reset_done) {
1616 kfree(ptr->host_scribble);
1617 ptr->host_scribble=NULL;
1618 }
1619
1620 DO_UNLOCK(flags);
1621 DPRINTK(debug_done, DEBUG_LEAD "calling scsi_done(%p)\n", hostno, id, lun, ptr);
1622 ptr->scsi_done(ptr);
1623 DPRINTK(debug_done, DEBUG_LEAD "scsi_done(%p) returned\n", hostno, id, lun, ptr);
1624 DO_LOCK(flags);
1625 }
1626
1627 DONE_SC=NULL;
1628#if defined(AHA152X_STAT)
1629 } else {
1630 HOSTDATA(shpnt)->busfree_without_done_command++;
1631#endif
1632 }
1633
1634 if(ISSUE_SC)
1635 CURRENT_SC = remove_first_SC(&ISSUE_SC);
1636
1637 DO_UNLOCK(flags);
1638
1639 if(CURRENT_SC) {
1640#if defined(AHA152X_STAT)
1641 action++;
1642#endif
1643 CURRENT_SC->SCp.phase |= selecting;
1644
1645 DPRINTK(debug_selection, DEBUG_LEAD "selecting target\n", CMDINFO(CURRENT_SC));
1646
1647 /* clear selection timeout */
1648 SETPORT(SSTAT1, SELTO);
1649
1650 SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id);
1651 SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER);
1652 SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0));
1653 } else {
1654#if defined(AHA152X_STAT)
1655 HOSTDATA(shpnt)->busfree_without_new_command++;
1656#endif
1657 SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0);
1658 }
1659
1660#if defined(AHA152X_STAT)
1661 if(!action)
1662 HOSTDATA(shpnt)->busfree_without_any_action++;
1663#endif
1664}
1665
1666/*
1667 * Selection done (OUT)
1668 * - queue IDENTIFY message and SDTR to selected target for message out
1669 * (ATN asserted automagically via ENAUTOATNO in busfree())
1670 */
1671static void seldo_run(struct Scsi_Host *shpnt)
1672{
1673 SETPORT(SCSISIG, 0);
1674 SETPORT(SSTAT1, CLRBUSFREE);
1675 SETPORT(SSTAT1, CLRPHASECHG);
1676
1677 CURRENT_SC->SCp.phase &= ~(selecting|not_issued);
1678
1679 SETPORT(SCSISEQ, 0);
1680
1681 if (TESTLO(SSTAT0, SELDO)) {
1682 printk(ERR_LEAD "aha152x: passing bus free condition\n", CMDINFO(CURRENT_SC));
1683 done(shpnt, DID_NO_CONNECT << 16);
1684 return;
1685 }
1686
1687 SETPORT(SSTAT0, CLRSELDO);
1688
1689 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1690
1691 if (CURRENT_SC->SCp.phase & aborting) {
1692 ADDMSGO(ABORT);
1693 } else if (CURRENT_SC->SCp.phase & resetting) {
1694 ADDMSGO(BUS_DEVICE_RESET);
1695 } else if (SYNCNEG==0 && SYNCHRONOUS) {
1696 CURRENT_SC->SCp.phase |= syncneg;
1697 MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8);
1698 SYNCNEG=1; /* negotiation in progress */
1699 }
1700
1701 SETRATE(SYNCRATE);
1702}
1703
1704/*
1705 * Selection timeout
1706 * - return command to mid-level with failure cause
1707 *
1708 */
1709static void selto_run(struct Scsi_Host *shpnt)
1710{
1711 SETPORT(SCSISEQ, 0);
1712 SETPORT(SSTAT1, CLRSELTIMO);
1713
1714 DPRINTK(debug_selection, DEBUG_LEAD "selection timeout\n", CMDINFO(CURRENT_SC));
1715
1716 if(!CURRENT_SC) {
1717 DPRINTK(debug_selection, DEBUG_LEAD "!CURRENT_SC\n", CMDINFO(CURRENT_SC));
1718 return;
1719 }
1720
1721 CURRENT_SC->SCp.phase &= ~selecting;
1722
1723 if (CURRENT_SC->SCp.phase & aborted) {
1724 DPRINTK(debug_selection, DEBUG_LEAD "aborted\n", CMDINFO(CURRENT_SC));
1725 done(shpnt, DID_ABORT << 16);
1726 } else if (TESTLO(SSTAT0, SELINGO)) {
1727 DPRINTK(debug_selection, DEBUG_LEAD "arbitration not won\n", CMDINFO(CURRENT_SC));
1728 done(shpnt, DID_BUS_BUSY << 16);
1729 } else {
1730 /* ARBITRATION won, but SELECTION failed */
1731 DPRINTK(debug_selection, DEBUG_LEAD "selection failed\n", CMDINFO(CURRENT_SC));
1732 done(shpnt, DID_NO_CONNECT << 16);
1733 }
1734}
1735
1736/*
1737 * Selection in done
1738 * - put current command back to issue queue
1739 * (reconnection of a disconnected nexus instead
1740 * of successful selection out)
1741 *
1742 */
1743static void seldi_run(struct Scsi_Host *shpnt)
1744{
1745 int selid;
1746 int target;
1747 unsigned long flags;
1748
1749 SETPORT(SCSISIG, 0);
1750 SETPORT(SSTAT0, CLRSELDI);
1751 SETPORT(SSTAT1, CLRBUSFREE);
1752 SETPORT(SSTAT1, CLRPHASECHG);
1753
1754 if(CURRENT_SC) {
1755 if(!(CURRENT_SC->SCp.phase & not_issued))
1756 printk(ERR_LEAD "command should not have been issued yet\n", CMDINFO(CURRENT_SC));
1757
1758 DPRINTK(debug_selection, ERR_LEAD "command requeued - reselection\n", CMDINFO(CURRENT_SC));
1759
1760 DO_LOCK(flags);
1761 append_SC(&ISSUE_SC, CURRENT_SC);
1762 DO_UNLOCK(flags);
1763
1764 CURRENT_SC = NULL;
1765 }
1766
1767 if(!DISCONNECTED_SC) {
1768 DPRINTK(debug_selection, DEBUG_LEAD "unexpected SELDI ", CMDINFO(CURRENT_SC));
1769 return;
1770 }
1771
1772 RECONN_TARGET=-1;
1773
1774 selid = GETPORT(SELID) & ~(1 << shpnt->this_id);
1775
1776 if (selid==0) {
1777 printk("aha152x%d: target id unknown (%02x)\n", HOSTNO, selid);
1778 return;
1779 }
1780
1781 for(target=7; !(selid & (1 << target)); target--)
1782 ;
1783
1784 if(selid & ~(1 << target)) {
1785 printk("aha152x%d: multiple targets reconnected (%02x)\n",
1786 HOSTNO, selid);
1787 }
1788
1789
1790 SETPORT(SCSIID, (shpnt->this_id << OID_) | target);
1791 SETPORT(SCSISEQ, 0);
1792
1793 SETRATE(HOSTDATA(shpnt)->syncrate[target]);
1794
1795 RECONN_TARGET=target;
1796 DPRINTK(debug_selection, DEBUG_LEAD "target %d reselected (%02x).\n", CMDINFO(CURRENT_SC), target, selid);
1797}
1798
1799/*
1800 * message in phase
1801 * - handle initial message after reconnection to identify
1802 * reconnecting nexus
1803 * - queue command on DISCONNECTED_SC on DISCONNECT message
1804 * - set completed flag on COMMAND COMPLETE
1805 * (other completition code moved to busfree_run)
1806 * - handle response to SDTR
1807 * - clear synchronous transfer agreements on BUS RESET
1808 *
1809 * FIXME: what about SAVE POINTERS, RESTORE POINTERS?
1810 *
1811 */
1812static void msgi_run(struct Scsi_Host *shpnt)
1813{
1814 for(;;) {
1815 int sstat1 = GETPORT(SSTAT1);
1816
1817 if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT))
1818 return;
1819
1820 if(TESTLO(SSTAT0,SPIORDY)) {
1821 DPRINTK(debug_msgi, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
1822 return;
1823 }
1824
1825 ADDMSGI(GETPORT(SCSIDAT));
1826
1827#if defined(AHA152X_DEBUG)
1828 if (HOSTDATA(shpnt)->debug & debug_msgi) {
1829 printk(INFO_LEAD "inbound message %02x ", CMDINFO(CURRENT_SC), MSGI(0));
1830 spi_print_msg(&MSGI(0));
1831 printk("\n");
1832 }
1833#endif
1834
1835 if(!CURRENT_SC) {
1836 if(LASTSTATE!=seldi) {
1837 printk(KERN_ERR "aha152x%d: message in w/o current command not after reselection\n", HOSTNO);
1838 }
1839
1840 /*
1841 * Handle reselection
1842 */
1843 if(!(MSGI(0) & IDENTIFY_BASE)) {
1844 printk(KERN_ERR "aha152x%d: target didn't identify after reselection\n", HOSTNO);
1845 continue;
1846 }
1847
1848 CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f);
1849
1850 if (!CURRENT_SC) {
1851 show_queues(shpnt);
1852 printk(KERN_ERR "aha152x%d: no disconnected command for target %d/%d\n", HOSTNO, RECONN_TARGET, MSGI(0) & 0x3f);
1853 continue;
1854 }
1855
1856 DPRINTK(debug_msgi, DEBUG_LEAD "target reconnected\n", CMDINFO(CURRENT_SC));
1857
1858 CURRENT_SC->SCp.Message = MSGI(0);
1859 CURRENT_SC->SCp.phase &= ~disconnected;
1860
1861 MSGILEN=0;
1862
1863 /* next message if any */
1864 continue;
1865 }
1866
1867 CURRENT_SC->SCp.Message = MSGI(0);
1868
1869 switch (MSGI(0)) {
1870 case DISCONNECT:
1871 if (!RECONNECT)
1872 printk(WARN_LEAD "target was not allowed to disconnect\n", CMDINFO(CURRENT_SC));
1873
1874 CURRENT_SC->SCp.phase |= disconnected;
1875 break;
1876
1877 case COMMAND_COMPLETE:
1878 if(CURRENT_SC->SCp.phase & completed)
1879 DPRINTK(debug_msgi, DEBUG_LEAD "again COMMAND COMPLETE\n", CMDINFO(CURRENT_SC));
1880
1881 CURRENT_SC->SCp.phase |= completed;
1882 break;
1883
1884 case MESSAGE_REJECT:
1885 if (SYNCNEG==1) {
1886 printk(INFO_LEAD "Synchronous Data Transfer Request was rejected\n", CMDINFO(CURRENT_SC));
1887 SYNCNEG=2; /* negotiation completed */
1888 } else
1889 printk(INFO_LEAD "inbound message (MESSAGE REJECT)\n", CMDINFO(CURRENT_SC));
1890 break;
1891
1892 case SAVE_POINTERS:
1893 break;
1894
1895 case RESTORE_POINTERS:
1896 break;
1897
1898 case EXTENDED_MESSAGE:
1899 if(MSGILEN<2 || MSGILEN<MSGI(1)+2) {
1900 /* not yet completed */
1901 continue;
1902 }
1903
1904 switch (MSGI(2)) {
1905 case EXTENDED_SDTR:
1906 {
1907 long ticks;
1908
1909 if (MSGI(1) != 3) {
1910 printk(ERR_LEAD "SDTR message length!=3\n", CMDINFO(CURRENT_SC));
1911 break;
1912 }
1913
1914 if (!HOSTDATA(shpnt)->synchronous)
1915 break;
1916
1917 printk(INFO_LEAD, CMDINFO(CURRENT_SC));
1918 spi_print_msg(&MSGI(0));
1919 printk("\n");
1920
1921 ticks = (MSGI(3) * 4 + 49) / 50;
1922
1923 if (syncneg) {
1924 /* negotiation in progress */
1925 if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) {
1926 ADDMSGO(MESSAGE_REJECT);
1927 printk(INFO_LEAD "received Synchronous Data Transfer Request invalid - rejected\n", CMDINFO(CURRENT_SC));
1928 break;
1929 }
1930
1931 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1932 } else if (ticks <= 9 && MSGI(4) >= 1) {
1933 ADDMSGO(EXTENDED_MESSAGE);
1934 ADDMSGO(3);
1935 ADDMSGO(EXTENDED_SDTR);
1936 if (ticks < 4) {
1937 ticks = 4;
1938 ADDMSGO(50);
1939 } else
1940 ADDMSGO(MSGI(3));
1941
1942 if (MSGI(4) > 8)
1943 MSGI(4) = 8;
1944
1945 ADDMSGO(MSGI(4));
1946
1947 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1948 } else {
1949 /* requested SDTR is too slow, do it asynchronously */
1950 printk(INFO_LEAD "Synchronous Data Transfer Request too slow - Rejecting\n", CMDINFO(CURRENT_SC));
1951 ADDMSGO(MESSAGE_REJECT);
1952 }
1953
1954 SYNCNEG=2; /* negotiation completed */
1955 SETRATE(SYNCRATE);
1956 }
1957 break;
1958
1959 case BUS_DEVICE_RESET:
1960 {
1961 int i;
1962
1963 for(i=0; i<8; i++) {
1964 HOSTDATA(shpnt)->syncrate[i]=0;
1965 HOSTDATA(shpnt)->syncneg[i]=0;
1966 }
1967
1968 }
1969 break;
1970
1971 case EXTENDED_MODIFY_DATA_POINTER:
1972 case EXTENDED_EXTENDED_IDENTIFY:
1973 case EXTENDED_WDTR:
1974 default:
1975 ADDMSGO(MESSAGE_REJECT);
1976 break;
1977 }
1978 break;
1979 }
1980
1981 MSGILEN=0;
1982 }
1983}
1984
1985static void msgi_end(struct Scsi_Host *shpnt)
1986{
1987 if(MSGILEN>0)
1988 printk(WARN_LEAD "target left before message completed (%d)\n", CMDINFO(CURRENT_SC), MSGILEN);
1989
1990 if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE)) {
1991 DPRINTK(debug_msgi, DEBUG_LEAD "msgo pending\n", CMDINFO(CURRENT_SC));
1992 SETPORT(SCSISIG, P_MSGI | SIG_ATNO);
1993 }
1994}
1995
1996/*
1997 * message out phase
1998 *
1999 */
2000static void msgo_init(struct Scsi_Host *shpnt)
2001{
2002 if(MSGOLEN==0) {
2003 if((CURRENT_SC->SCp.phase & syncneg) && SYNCNEG==2 && SYNCRATE==0) {
2004 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
2005 } else {
2006 printk(INFO_LEAD "unexpected MESSAGE OUT phase; rejecting\n", CMDINFO(CURRENT_SC));
2007 ADDMSGO(MESSAGE_REJECT);
2008 }
2009 }
2010
2011#if defined(AHA152X_DEBUG)
2012 if(HOSTDATA(shpnt)->debug & debug_msgo) {
2013 int i;
2014
2015 printk(DEBUG_LEAD "messages( ", CMDINFO(CURRENT_SC));
2016 for (i=0; i<MSGOLEN; i+=spi_print_msg(&MSGO(i)), printk(" "))
2017 ;
2018 printk(")\n");
2019 }
2020#endif
2021}
2022
2023/*
2024 * message out phase
2025 *
2026 */
2027static void msgo_run(struct Scsi_Host *shpnt)
2028{
2029 if(MSGO_I==MSGOLEN)
2030 DPRINTK(debug_msgo, DEBUG_LEAD "messages all sent (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO_I, MSGOLEN);
2031
2032 while(MSGO_I<MSGOLEN) {
2033 DPRINTK(debug_msgo, DEBUG_LEAD "message byte %02x (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO(MSGO_I), MSGO_I, MSGOLEN);
2034
2035 if(TESTLO(SSTAT0, SPIORDY)) {
2036 DPRINTK(debug_msgo, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
2037 return;
2038 }
2039
2040 if (MSGO_I==MSGOLEN-1) {
2041 /* Leave MESSAGE OUT after transfer */
2042 SETPORT(SSTAT1, CLRATNO);
2043 }
2044
2045
2046 if (MSGO(MSGO_I) & IDENTIFY_BASE)
2047 CURRENT_SC->SCp.phase |= identified;
2048
2049 if (MSGO(MSGO_I)==ABORT)
2050 CURRENT_SC->SCp.phase |= aborted;
2051
2052 if (MSGO(MSGO_I)==BUS_DEVICE_RESET)
2053 CURRENT_SC->SCp.phase |= resetted;
2054
2055 SETPORT(SCSIDAT, MSGO(MSGO_I++));
2056 }
2057}
2058
2059static void msgo_end(struct Scsi_Host *shpnt)
2060{
2061 if(MSGO_I<MSGOLEN) {
2062 printk(ERR_LEAD "message sent incompletely (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO_I, MSGOLEN);
2063 if(SYNCNEG==1) {
2064 printk(INFO_LEAD "Synchronous Data Transfer Request was rejected\n", CMDINFO(CURRENT_SC));
2065 SYNCNEG=2;
2066 }
2067 }
2068
2069 MSGO_I = 0;
2070 MSGOLEN = 0;
2071}
2072
2073/*
2074 * command phase
2075 *
2076 */
2077static void cmd_init(struct Scsi_Host *shpnt)
2078{
2079 if (CURRENT_SC->SCp.sent_command) {
2080 printk(ERR_LEAD "command already sent\n", CMDINFO(CURRENT_SC));
2081 done(shpnt, DID_ERROR << 16);
2082 return;
2083 }
2084
2085#if defined(AHA152X_DEBUG)
2086 if (HOSTDATA(shpnt)->debug & debug_cmd) {
2087 printk(DEBUG_LEAD "cmd_init: ", CMDINFO(CURRENT_SC));
2088 __scsi_print_command(CURRENT_SC->cmnd);
2089 }
2090#endif
2091
2092 CMD_I=0;
2093}
2094
2095/*
2096 * command phase
2097 *
2098 */
2099static void cmd_run(struct Scsi_Host *shpnt)
2100{
2101 if(CMD_I==CURRENT_SC->cmd_len) {
2102 DPRINTK(debug_cmd, DEBUG_LEAD "command already completely sent (%d/%d)", CMDINFO(CURRENT_SC), CMD_I, CURRENT_SC->cmd_len);
2103 disp_ports(shpnt);
2104 }
2105
2106 while(CMD_I<CURRENT_SC->cmd_len) {
2107 DPRINTK(debug_cmd, DEBUG_LEAD "command byte %02x (%d/%d)\n", CMDINFO(CURRENT_SC), CURRENT_SC->cmnd[CMD_I], CMD_I, CURRENT_SC->cmd_len);
2108
2109 if(TESTLO(SSTAT0, SPIORDY)) {
2110 DPRINTK(debug_cmd, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
2111 return;
2112 }
2113
2114 SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]);
2115 }
2116}
2117
2118static void cmd_end(struct Scsi_Host *shpnt)
2119{
2120 if(CMD_I<CURRENT_SC->cmd_len)
2121 printk(ERR_LEAD "command sent incompletely (%d/%d)\n", CMDINFO(CURRENT_SC), CMD_I, CURRENT_SC->cmd_len);
2122 else
2123 CURRENT_SC->SCp.sent_command++;
2124}
2125
2126/*
2127 * status phase
2128 *
2129 */
2130static void status_run(struct Scsi_Host *shpnt)
2131{
2132 if(TESTLO(SSTAT0,SPIORDY)) {
2133 DPRINTK(debug_status, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
2134 return;
2135 }
2136
2137 CURRENT_SC->SCp.Status = GETPORT(SCSIDAT);
2138
2139#if defined(AHA152X_DEBUG)
2140 if (HOSTDATA(shpnt)->debug & debug_status) {
2141 printk(DEBUG_LEAD "inbound status %02x ", CMDINFO(CURRENT_SC), CURRENT_SC->SCp.Status);
2142 scsi_print_status(CURRENT_SC->SCp.Status);
2143 printk("\n");
2144 }
2145#endif
2146}
2147
2148/*
2149 * data in phase
2150 *
2151 */
2152static void datai_init(struct Scsi_Host *shpnt)
2153{
2154 SETPORT(DMACNTRL0, RSTFIFO);
2155 SETPORT(DMACNTRL0, RSTFIFO|ENDMA);
2156
2157 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2158 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
2159
2160 SETPORT(SIMODE0, 0);
2161 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE);
2162
2163 DATA_LEN=0;
2164 DPRINTK(debug_datai,
2165 DEBUG_LEAD "datai_init: request_bufflen=%d resid=%d\n",
2166 CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC),
2167 scsi_get_resid(CURRENT_SC));
2168}
2169
2170static void datai_run(struct Scsi_Host *shpnt)
2171{
2172 unsigned long the_time;
2173 int fifodata, data_count;
2174
2175 /*
2176 * loop while the phase persists or the fifos are not empty
2177 *
2178 */
2179 while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) {
2180 /* FIXME: maybe this should be done by setting up
2181 * STCNT to trigger ENSWRAP interrupt, instead of
2182 * polling for DFIFOFULL
2183 */
2184 the_time=jiffies + 100*HZ;
2185 while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time))
2186 barrier();
2187
2188 if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) {
2189 printk(ERR_LEAD "datai timeout", CMDINFO(CURRENT_SC));
2190 disp_ports(shpnt);
2191 break;
2192 }
2193
2194 if(TESTHI(DMASTAT, DFIFOFULL)) {
2195 fifodata = 128;
2196 } else {
2197 the_time=jiffies + 100*HZ;
2198 while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time))
2199 barrier();
2200
2201 if(TESTLO(SSTAT2, SEMPTY)) {
2202 printk(ERR_LEAD "datai sempty timeout", CMDINFO(CURRENT_SC));
2203 disp_ports(shpnt);
2204 break;
2205 }
2206
2207 fifodata = GETPORT(FIFOSTAT);
2208 }
2209
2210 if(CURRENT_SC->SCp.this_residual>0) {
2211 while(fifodata>0 && CURRENT_SC->SCp.this_residual>0) {
2212 data_count = fifodata>CURRENT_SC->SCp.this_residual ?
2213 CURRENT_SC->SCp.this_residual :
2214 fifodata;
2215 fifodata -= data_count;
2216
2217 if(data_count & 1) {
2218 DPRINTK(debug_datai, DEBUG_LEAD "8bit\n", CMDINFO(CURRENT_SC));
2219 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2220 *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT);
2221 CURRENT_SC->SCp.this_residual--;
2222 DATA_LEN++;
2223 SETPORT(DMACNTRL0, ENDMA);
2224 }
2225
2226 if(data_count > 1) {
2227 DPRINTK(debug_datai, DEBUG_LEAD "16bit(%d)\n", CMDINFO(CURRENT_SC), data_count);
2228 data_count >>= 1;
2229 insw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2230 CURRENT_SC->SCp.ptr += 2 * data_count;
2231 CURRENT_SC->SCp.this_residual -= 2 * data_count;
2232 DATA_LEN += 2 * data_count;
2233 }
2234
2235 if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
2236 /* advance to next buffer */
2237 CURRENT_SC->SCp.buffers_residual--;
2238 CURRENT_SC->SCp.buffer++;
2239 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2240 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2241 }
2242 }
2243 } else if(fifodata>0) {
2244 printk(ERR_LEAD "no buffers left for %d(%d) bytes (data overrun!?)\n", CMDINFO(CURRENT_SC), fifodata, GETPORT(FIFOSTAT));
2245 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2246 while(fifodata>0) {
2247 int data;
2248 data=GETPORT(DATAPORT);
2249 DPRINTK(debug_datai, DEBUG_LEAD "data=%02x\n", CMDINFO(CURRENT_SC), data);
2250 fifodata--;
2251 DATA_LEN++;
2252 }
2253 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2254 }
2255 }
2256
2257 if(TESTLO(DMASTAT, INTSTAT) ||
2258 TESTLO(DMASTAT, DFIFOEMP) ||
2259 TESTLO(SSTAT2, SEMPTY) ||
2260 GETPORT(FIFOSTAT)>0) {
2261 /*
2262 * something went wrong, if there's something left in the fifos
2263 * or the phase didn't change
2264 */
2265 printk(ERR_LEAD "fifos should be empty and phase should have changed\n", CMDINFO(CURRENT_SC));
2266 disp_ports(shpnt);
2267 }
2268
2269 if(DATA_LEN!=GETSTCNT()) {
2270 printk(ERR_LEAD
2271 "manual transfer count differs from automatic (count=%d;stcnt=%d;diff=%d;fifostat=%d)",
2272 CMDINFO(CURRENT_SC), DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN, GETPORT(FIFOSTAT));
2273 disp_ports(shpnt);
2274 mdelay(10000);
2275 }
2276}
2277
2278static void datai_end(struct Scsi_Host *shpnt)
2279{
2280 CMD_INC_RESID(CURRENT_SC, -GETSTCNT());
2281
2282 DPRINTK(debug_datai,
2283 DEBUG_LEAD "datai_end: request_bufflen=%d resid=%d stcnt=%d\n",
2284 CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC),
2285 scsi_get_resid(CURRENT_SC), GETSTCNT());
2286
2287 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2288 SETPORT(DMACNTRL0, 0);
2289}
2290
2291/*
2292 * data out phase
2293 *
2294 */
2295static void datao_init(struct Scsi_Host *shpnt)
2296{
2297 SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO);
2298 SETPORT(DMACNTRL0, WRITE_READ | ENDMA);
2299
2300 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2301 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
2302
2303 SETPORT(SIMODE0, 0);
2304 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE );
2305
2306 DATA_LEN = scsi_get_resid(CURRENT_SC);
2307
2308 DPRINTK(debug_datao,
2309 DEBUG_LEAD "datao_init: request_bufflen=%d; resid=%d\n",
2310 CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC),
2311 scsi_get_resid(CURRENT_SC));
2312}
2313
2314static void datao_run(struct Scsi_Host *shpnt)
2315{
2316 unsigned long the_time;
2317 int data_count;
2318
2319 /* until phase changes or all data sent */
2320 while(TESTLO(DMASTAT, INTSTAT) && CURRENT_SC->SCp.this_residual>0) {
2321 data_count = 128;
2322 if(data_count > CURRENT_SC->SCp.this_residual)
2323 data_count=CURRENT_SC->SCp.this_residual;
2324
2325 if(TESTLO(DMASTAT, DFIFOEMP)) {
2326 printk(ERR_LEAD "datao fifo not empty (%d)", CMDINFO(CURRENT_SC), GETPORT(FIFOSTAT));
2327 disp_ports(shpnt);
2328 break;
2329 }
2330
2331 if(data_count & 1) {
2332 SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT);
2333 SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++);
2334 CURRENT_SC->SCp.this_residual--;
2335 CMD_INC_RESID(CURRENT_SC, -1);
2336 SETPORT(DMACNTRL0,WRITE_READ|ENDMA);
2337 }
2338
2339 if(data_count > 1) {
2340 data_count >>= 1;
2341 outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2342 CURRENT_SC->SCp.ptr += 2 * data_count;
2343 CURRENT_SC->SCp.this_residual -= 2 * data_count;
2344 CMD_INC_RESID(CURRENT_SC, -2 * data_count);
2345 }
2346
2347 if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
2348 /* advance to next buffer */
2349 CURRENT_SC->SCp.buffers_residual--;
2350 CURRENT_SC->SCp.buffer++;
2351 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2352 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2353 }
2354
2355 the_time=jiffies + 100*HZ;
2356 while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time))
2357 barrier();
2358
2359 if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) {
2360 printk(ERR_LEAD "dataout timeout", CMDINFO(CURRENT_SC));
2361 disp_ports(shpnt);
2362 break;
2363 }
2364 }
2365}
2366
2367static void datao_end(struct Scsi_Host *shpnt)
2368{
2369 if(TESTLO(DMASTAT, DFIFOEMP)) {
2370 int data_count = (DATA_LEN - scsi_get_resid(CURRENT_SC)) -
2371 GETSTCNT();
2372
2373 DPRINTK(debug_datao, DEBUG_LEAD "datao: %d bytes to resend (%d written, %d transferred)\n",
2374 CMDINFO(CURRENT_SC),
2375 data_count,
2376 DATA_LEN - scsi_get_resid(CURRENT_SC),
2377 GETSTCNT());
2378
2379 CMD_INC_RESID(CURRENT_SC, data_count);
2380
2381 data_count -= CURRENT_SC->SCp.ptr -
2382 SG_ADDRESS(CURRENT_SC->SCp.buffer);
2383 while(data_count>0) {
2384 CURRENT_SC->SCp.buffer--;
2385 CURRENT_SC->SCp.buffers_residual++;
2386 data_count -= CURRENT_SC->SCp.buffer->length;
2387 }
2388 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) -
2389 data_count;
2390 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length +
2391 data_count;
2392 }
2393
2394 DPRINTK(debug_datao, DEBUG_LEAD "datao_end: request_bufflen=%d; resid=%d; stcnt=%d\n",
2395 CMDINFO(CURRENT_SC),
2396 scsi_bufflen(CURRENT_SC),
2397 scsi_get_resid(CURRENT_SC),
2398 GETSTCNT());
2399
2400 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
2401 SETPORT(SXFRCTL0, CH1);
2402
2403 SETPORT(DMACNTRL0, 0);
2404}
2405
2406/*
2407 * figure out what state we're in
2408 *
2409 */
2410static int update_state(struct Scsi_Host *shpnt)
2411{
2412 int dataphase=0;
2413 unsigned int stat0 = GETPORT(SSTAT0);
2414 unsigned int stat1 = GETPORT(SSTAT1);
2415
2416 PREVSTATE = STATE;
2417 STATE=unknown;
2418
2419 if(stat1 & SCSIRSTI) {
2420 STATE=rsti;
2421 SETPORT(SCSISEQ,0);
2422 SETPORT(SSTAT1,SCSIRSTI);
2423 } else if(stat0 & SELDI && PREVSTATE==busfree) {
2424 STATE=seldi;
2425 } else if(stat0 & SELDO && CURRENT_SC && (CURRENT_SC->SCp.phase & selecting)) {
2426 STATE=seldo;
2427 } else if(stat1 & SELTO) {
2428 STATE=selto;
2429 } else if(stat1 & BUSFREE) {
2430 STATE=busfree;
2431 SETPORT(SSTAT1,BUSFREE);
2432 } else if(stat1 & SCSIPERR) {
2433 STATE=parerr;
2434 SETPORT(SSTAT1,SCSIPERR);
2435 } else if(stat1 & REQINIT) {
2436 switch(GETPORT(SCSISIG) & P_MASK) {
2437 case P_MSGI: STATE=msgi; break;
2438 case P_MSGO: STATE=msgo; break;
2439 case P_DATAO: STATE=datao; break;
2440 case P_DATAI: STATE=datai; break;
2441 case P_STATUS: STATE=status; break;
2442 case P_CMD: STATE=cmd; break;
2443 }
2444 dataphase=1;
2445 }
2446
2447 if((stat0 & SELDI) && STATE!=seldi && !dataphase) {
2448 printk(INFO_LEAD "reselection missed?", CMDINFO(CURRENT_SC));
2449 disp_ports(shpnt);
2450 }
2451
2452 if(STATE!=PREVSTATE) {
2453 LASTSTATE=PREVSTATE;
2454 }
2455
2456 return dataphase;
2457}
2458
2459/*
2460 * handle parity error
2461 *
2462 * FIXME: in which phase?
2463 *
2464 */
2465static void parerr_run(struct Scsi_Host *shpnt)
2466{
2467 printk(ERR_LEAD "parity error\n", CMDINFO(CURRENT_SC));
2468 done(shpnt, DID_PARITY << 16);
2469}
2470
2471/*
2472 * handle reset in
2473 *
2474 */
2475static void rsti_run(struct Scsi_Host *shpnt)
2476{
2477 Scsi_Cmnd *ptr;
2478
2479 printk(KERN_NOTICE "aha152x%d: scsi reset in\n", HOSTNO);
2480
2481 ptr=DISCONNECTED_SC;
2482 while(ptr) {
2483 Scsi_Cmnd *next = SCNEXT(ptr);
2484
2485 if (!ptr->device->soft_reset) {
2486 remove_SC(&DISCONNECTED_SC, ptr);
2487
2488 kfree(ptr->host_scribble);
2489 ptr->host_scribble=NULL;
2490
2491 ptr->result = DID_RESET << 16;
2492 ptr->scsi_done(ptr);
2493 }
2494
2495 ptr = next;
2496 }
2497
2498 if(CURRENT_SC && !CURRENT_SC->device->soft_reset)
2499 done(shpnt, DID_RESET << 16 );
2500}
2501
2502
2503/*
2504 * bottom-half handler
2505 *
2506 */
2507static void is_complete(struct Scsi_Host *shpnt)
2508{
2509 int dataphase;
2510 unsigned long flags;
2511 int pending;
2512
2513 if(!shpnt)
2514 return;
2515
2516 DO_LOCK(flags);
2517
2518 if( HOSTDATA(shpnt)->service==0 ) {
2519 DO_UNLOCK(flags);
2520 return;
2521 }
2522
2523 HOSTDATA(shpnt)->service = 0;
2524
2525 if(HOSTDATA(shpnt)->in_intr) {
2526 DO_UNLOCK(flags);
2527 /* aha152x_error never returns.. */
2528 aha152x_error(shpnt, "bottom-half already running!?");
2529 }
2530 HOSTDATA(shpnt)->in_intr++;
2531
2532 /*
2533 * loop while there are interrupt conditions pending
2534 *
2535 */
2536 do {
2537 unsigned long start = jiffies;
2538 DO_UNLOCK(flags);
2539
2540 dataphase=update_state(shpnt);
2541
2542 DPRINTK(debug_phases, LEAD "start %s %s(%s)\n", CMDINFO(CURRENT_SC), states[STATE].name, states[PREVSTATE].name, states[LASTSTATE].name);
2543
2544 /*
2545 * end previous state
2546 *
2547 */
2548 if(PREVSTATE!=STATE && states[PREVSTATE].end)
2549 states[PREVSTATE].end(shpnt);
2550
2551 /*
2552 * disable SPIO mode if previous phase used it
2553 * and this one doesn't
2554 *
2555 */
2556 if(states[PREVSTATE].spio && !states[STATE].spio) {
2557 SETPORT(SXFRCTL0, CH1);
2558 SETPORT(DMACNTRL0, 0);
2559 if(CURRENT_SC)
2560 CURRENT_SC->SCp.phase &= ~spiordy;
2561 }
2562
2563 /*
2564 * accept current dataphase phase
2565 *
2566 */
2567 if(dataphase) {
2568 SETPORT(SSTAT0, REQINIT);
2569 SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK);
2570 SETPORT(SSTAT1, PHASECHG);
2571 }
2572
2573 /*
2574 * enable SPIO mode if previous didn't use it
2575 * and this one does
2576 *
2577 */
2578 if(!states[PREVSTATE].spio && states[STATE].spio) {
2579 SETPORT(DMACNTRL0, 0);
2580 SETPORT(SXFRCTL0, CH1|SPIOEN);
2581 if(CURRENT_SC)
2582 CURRENT_SC->SCp.phase |= spiordy;
2583 }
2584
2585 /*
2586 * initialize for new state
2587 *
2588 */
2589 if(PREVSTATE!=STATE && states[STATE].init)
2590 states[STATE].init(shpnt);
2591
2592 /*
2593 * handle current state
2594 *
2595 */
2596 if(states[STATE].run)
2597 states[STATE].run(shpnt);
2598 else
2599 printk(ERR_LEAD "unexpected state (%x)\n", CMDINFO(CURRENT_SC), STATE);
2600
2601 /*
2602 * setup controller to interrupt on
2603 * the next expected condition and
2604 * loop if it's already there
2605 *
2606 */
2607 DO_LOCK(flags);
2608 pending=setup_expected_interrupts(shpnt);
2609#if defined(AHA152X_STAT)
2610 HOSTDATA(shpnt)->count[STATE]++;
2611 if(PREVSTATE!=STATE)
2612 HOSTDATA(shpnt)->count_trans[STATE]++;
2613 HOSTDATA(shpnt)->time[STATE] += jiffies-start;
2614#endif
2615
2616 DPRINTK(debug_phases, LEAD "end %s %s(%s)\n", CMDINFO(CURRENT_SC), states[STATE].name, states[PREVSTATE].name, states[LASTSTATE].name);
2617 } while(pending);
2618
2619 /*
2620 * enable interrupts and leave bottom-half
2621 *
2622 */
2623 HOSTDATA(shpnt)->in_intr--;
2624 SETBITS(DMACNTRL0, INTEN);
2625 DO_UNLOCK(flags);
2626}
2627
2628
2629/*
2630 * Dump the current driver status and panic
2631 */
2632static void aha152x_error(struct Scsi_Host *shpnt, char *msg)
2633{
2634 printk(KERN_EMERG "\naha152x%d: %s\n", HOSTNO, msg);
2635 show_queues(shpnt);
2636 panic("aha152x panic\n");
2637}
2638
2639/*
2640 * Display registers of AIC-6260
2641 */
2642static void disp_ports(struct Scsi_Host *shpnt)
2643{
2644#if defined(AHA152X_DEBUG)
2645 int s;
2646
2647 printk("\n%s: %s(%s) ",
2648 CURRENT_SC ? "busy" : "waiting",
2649 states[STATE].name,
2650 states[PREVSTATE].name);
2651
2652 s = GETPORT(SCSISEQ);
2653 printk("SCSISEQ( ");
2654 if (s & TEMODEO)
2655 printk("TARGET MODE ");
2656 if (s & ENSELO)
2657 printk("SELO ");
2658 if (s & ENSELI)
2659 printk("SELI ");
2660 if (s & ENRESELI)
2661 printk("RESELI ");
2662 if (s & ENAUTOATNO)
2663 printk("AUTOATNO ");
2664 if (s & ENAUTOATNI)
2665 printk("AUTOATNI ");
2666 if (s & ENAUTOATNP)
2667 printk("AUTOATNP ");
2668 if (s & SCSIRSTO)
2669 printk("SCSIRSTO ");
2670 printk(");");
2671
2672 printk(" SCSISIG(");
2673 s = GETPORT(SCSISIG);
2674 switch (s & P_MASK) {
2675 case P_DATAO:
2676 printk("DATA OUT");
2677 break;
2678 case P_DATAI:
2679 printk("DATA IN");
2680 break;
2681 case P_CMD:
2682 printk("COMMAND");
2683 break;
2684 case P_STATUS:
2685 printk("STATUS");
2686 break;
2687 case P_MSGO:
2688 printk("MESSAGE OUT");
2689 break;
2690 case P_MSGI:
2691 printk("MESSAGE IN");
2692 break;
2693 default:
2694 printk("*invalid*");
2695 break;
2696 }
2697
2698 printk("); ");
2699
2700 printk("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");
2701
2702 printk("SSTAT( ");
2703 s = GETPORT(SSTAT0);
2704 if (s & TARGET)
2705 printk("TARGET ");
2706 if (s & SELDO)
2707 printk("SELDO ");
2708 if (s & SELDI)
2709 printk("SELDI ");
2710 if (s & SELINGO)
2711 printk("SELINGO ");
2712 if (s & SWRAP)
2713 printk("SWRAP ");
2714 if (s & SDONE)
2715 printk("SDONE ");
2716 if (s & SPIORDY)
2717 printk("SPIORDY ");
2718 if (s & DMADONE)
2719 printk("DMADONE ");
2720
2721 s = GETPORT(SSTAT1);
2722 if (s & SELTO)
2723 printk("SELTO ");
2724 if (s & ATNTARG)
2725 printk("ATNTARG ");
2726 if (s & SCSIRSTI)
2727 printk("SCSIRSTI ");
2728 if (s & PHASEMIS)
2729 printk("PHASEMIS ");
2730 if (s & BUSFREE)
2731 printk("BUSFREE ");
2732 if (s & SCSIPERR)
2733 printk("SCSIPERR ");
2734 if (s & PHASECHG)
2735 printk("PHASECHG ");
2736 if (s & REQINIT)
2737 printk("REQINIT ");
2738 printk("); ");
2739
2740
2741 printk("SSTAT( ");
2742
2743 s = GETPORT(SSTAT0) & GETPORT(SIMODE0);
2744
2745 if (s & TARGET)
2746 printk("TARGET ");
2747 if (s & SELDO)
2748 printk("SELDO ");
2749 if (s & SELDI)
2750 printk("SELDI ");
2751 if (s & SELINGO)
2752 printk("SELINGO ");
2753 if (s & SWRAP)
2754 printk("SWRAP ");
2755 if (s & SDONE)
2756 printk("SDONE ");
2757 if (s & SPIORDY)
2758 printk("SPIORDY ");
2759 if (s & DMADONE)
2760 printk("DMADONE ");
2761
2762 s = GETPORT(SSTAT1) & GETPORT(SIMODE1);
2763
2764 if (s & SELTO)
2765 printk("SELTO ");
2766 if (s & ATNTARG)
2767 printk("ATNTARG ");
2768 if (s & SCSIRSTI)
2769 printk("SCSIRSTI ");
2770 if (s & PHASEMIS)
2771 printk("PHASEMIS ");
2772 if (s & BUSFREE)
2773 printk("BUSFREE ");
2774 if (s & SCSIPERR)
2775 printk("SCSIPERR ");
2776 if (s & PHASECHG)
2777 printk("PHASECHG ");
2778 if (s & REQINIT)
2779 printk("REQINIT ");
2780 printk("); ");
2781
2782 printk("SXFRCTL0( ");
2783
2784 s = GETPORT(SXFRCTL0);
2785 if (s & SCSIEN)
2786 printk("SCSIEN ");
2787 if (s & DMAEN)
2788 printk("DMAEN ");
2789 if (s & CH1)
2790 printk("CH1 ");
2791 if (s & CLRSTCNT)
2792 printk("CLRSTCNT ");
2793 if (s & SPIOEN)
2794 printk("SPIOEN ");
2795 if (s & CLRCH1)
2796 printk("CLRCH1 ");
2797 printk("); ");
2798
2799 printk("SIGNAL( ");
2800
2801 s = GETPORT(SCSISIG);
2802 if (s & SIG_ATNI)
2803 printk("ATNI ");
2804 if (s & SIG_SELI)
2805 printk("SELI ");
2806 if (s & SIG_BSYI)
2807 printk("BSYI ");
2808 if (s & SIG_REQI)
2809 printk("REQI ");
2810 if (s & SIG_ACKI)
2811 printk("ACKI ");
2812 printk("); ");
2813
2814 printk("SELID (%02x), ", GETPORT(SELID));
2815
2816 printk("STCNT (%d), ", GETSTCNT());
2817
2818 printk("SSTAT2( ");
2819
2820 s = GETPORT(SSTAT2);
2821 if (s & SOFFSET)
2822 printk("SOFFSET ");
2823 if (s & SEMPTY)
2824 printk("SEMPTY ");
2825 if (s & SFULL)
2826 printk("SFULL ");
2827 printk("); SFCNT (%d); ", s & (SFULL | SFCNT));
2828
2829 s = GETPORT(SSTAT3);
2830 printk("SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);
2831
2832 printk("SSTAT4( ");
2833 s = GETPORT(SSTAT4);
2834 if (s & SYNCERR)
2835 printk("SYNCERR ");
2836 if (s & FWERR)
2837 printk("FWERR ");
2838 if (s & FRERR)
2839 printk("FRERR ");
2840 printk("); ");
2841
2842 printk("DMACNTRL0( ");
2843 s = GETPORT(DMACNTRL0);
2844 printk("%s ", s & _8BIT ? "8BIT" : "16BIT");
2845 printk("%s ", s & DMA ? "DMA" : "PIO");
2846 printk("%s ", s & WRITE_READ ? "WRITE" : "READ");
2847 if (s & ENDMA)
2848 printk("ENDMA ");
2849 if (s & INTEN)
2850 printk("INTEN ");
2851 if (s & RSTFIFO)
2852 printk("RSTFIFO ");
2853 if (s & SWINT)
2854 printk("SWINT ");
2855 printk("); ");
2856
2857 printk("DMASTAT( ");
2858 s = GETPORT(DMASTAT);
2859 if (s & ATDONE)
2860 printk("ATDONE ");
2861 if (s & WORDRDY)
2862 printk("WORDRDY ");
2863 if (s & DFIFOFULL)
2864 printk("DFIFOFULL ");
2865 if (s & DFIFOEMP)
2866 printk("DFIFOEMP ");
2867 printk(")\n");
2868#endif
2869}
2870
2871/*
2872 * display enabled interrupts
2873 */
2874static void disp_enintr(struct Scsi_Host *shpnt)
2875{
2876 int s;
2877
2878 printk(KERN_DEBUG "enabled interrupts ( ");
2879
2880 s = GETPORT(SIMODE0);
2881 if (s & ENSELDO)
2882 printk("ENSELDO ");
2883 if (s & ENSELDI)
2884 printk("ENSELDI ");
2885 if (s & ENSELINGO)
2886 printk("ENSELINGO ");
2887 if (s & ENSWRAP)
2888 printk("ENSWRAP ");
2889 if (s & ENSDONE)
2890 printk("ENSDONE ");
2891 if (s & ENSPIORDY)
2892 printk("ENSPIORDY ");
2893 if (s & ENDMADONE)
2894 printk("ENDMADONE ");
2895
2896 s = GETPORT(SIMODE1);
2897 if (s & ENSELTIMO)
2898 printk("ENSELTIMO ");
2899 if (s & ENATNTARG)
2900 printk("ENATNTARG ");
2901 if (s & ENPHASEMIS)
2902 printk("ENPHASEMIS ");
2903 if (s & ENBUSFREE)
2904 printk("ENBUSFREE ");
2905 if (s & ENSCSIPERR)
2906 printk("ENSCSIPERR ");
2907 if (s & ENPHASECHG)
2908 printk("ENPHASECHG ");
2909 if (s & ENREQINIT)
2910 printk("ENREQINIT ");
2911 printk(")\n");
2912}
2913
2914/*
2915 * Show the command data of a command
2916 */
2917static void show_command(Scsi_Cmnd *ptr)
2918{
2919 scmd_printk(KERN_DEBUG, ptr, "%p: cmnd=(", ptr);
2920
2921 __scsi_print_command(ptr->cmnd);
2922
2923 printk(KERN_DEBUG "); request_bufflen=%d; resid=%d; phase |",
2924 scsi_bufflen(ptr), scsi_get_resid(ptr));
2925
2926 if (ptr->SCp.phase & not_issued)
2927 printk("not issued|");
2928 if (ptr->SCp.phase & selecting)
2929 printk("selecting|");
2930 if (ptr->SCp.phase & identified)
2931 printk("identified|");
2932 if (ptr->SCp.phase & disconnected)
2933 printk("disconnected|");
2934 if (ptr->SCp.phase & completed)
2935 printk("completed|");
2936 if (ptr->SCp.phase & spiordy)
2937 printk("spiordy|");
2938 if (ptr->SCp.phase & syncneg)
2939 printk("syncneg|");
2940 if (ptr->SCp.phase & aborted)
2941 printk("aborted|");
2942 if (ptr->SCp.phase & resetted)
2943 printk("resetted|");
2944 if( SCDATA(ptr) ) {
2945 printk("; next=0x%p\n", SCNEXT(ptr));
2946 } else {
2947 printk("; next=(host scribble NULL)\n");
2948 }
2949}
2950
2951/*
2952 * Dump the queued data
2953 */
2954static void show_queues(struct Scsi_Host *shpnt)
2955{
2956 Scsi_Cmnd *ptr;
2957 unsigned long flags;
2958
2959 DO_LOCK(flags);
2960 printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n");
2961 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
2962 show_command(ptr);
2963 DO_UNLOCK(flags);
2964
2965 printk(KERN_DEBUG "current_SC:\n");
2966 if (CURRENT_SC)
2967 show_command(CURRENT_SC);
2968 else
2969 printk(KERN_DEBUG "none\n");
2970
2971 printk(KERN_DEBUG "disconnected_SC:\n");
2972 for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL)
2973 show_command(ptr);
2974
2975 disp_ports(shpnt);
2976 disp_enintr(shpnt);
2977}
2978
2979#undef SPRINTF
2980#define SPRINTF(args...) seq_printf(m, ##args)
2981
2982static void get_command(struct seq_file *m, Scsi_Cmnd * ptr)
2983{
2984 int i;
2985
2986 SPRINTF("%p: target=%d; lun=%d; cmnd=( ",
2987 ptr, ptr->device->id, ptr->device->lun);
2988
2989 for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++)
2990 SPRINTF("0x%02x ", ptr->cmnd[i]);
2991
2992 SPRINTF("); resid=%d; residual=%d; buffers=%d; phase |",
2993 scsi_get_resid(ptr), ptr->SCp.this_residual,
2994 ptr->SCp.buffers_residual);
2995
2996 if (ptr->SCp.phase & not_issued)
2997 SPRINTF("not issued|");
2998 if (ptr->SCp.phase & selecting)
2999 SPRINTF("selecting|");
3000 if (ptr->SCp.phase & disconnected)
3001 SPRINTF("disconnected|");
3002 if (ptr->SCp.phase & aborted)
3003 SPRINTF("aborted|");
3004 if (ptr->SCp.phase & identified)
3005 SPRINTF("identified|");
3006 if (ptr->SCp.phase & completed)
3007 SPRINTF("completed|");
3008 if (ptr->SCp.phase & spiordy)
3009 SPRINTF("spiordy|");
3010 if (ptr->SCp.phase & syncneg)
3011 SPRINTF("syncneg|");
3012 SPRINTF("; next=0x%p\n", SCNEXT(ptr));
3013}
3014
3015static void get_ports(struct seq_file *m, struct Scsi_Host *shpnt)
3016{
3017 int s;
3018
3019 SPRINTF("\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name);
3020
3021 s = GETPORT(SCSISEQ);
3022 SPRINTF("SCSISEQ( ");
3023 if (s & TEMODEO)
3024 SPRINTF("TARGET MODE ");
3025 if (s & ENSELO)
3026 SPRINTF("SELO ");
3027 if (s & ENSELI)
3028 SPRINTF("SELI ");
3029 if (s & ENRESELI)
3030 SPRINTF("RESELI ");
3031 if (s & ENAUTOATNO)
3032 SPRINTF("AUTOATNO ");
3033 if (s & ENAUTOATNI)
3034 SPRINTF("AUTOATNI ");
3035 if (s & ENAUTOATNP)
3036 SPRINTF("AUTOATNP ");
3037 if (s & SCSIRSTO)
3038 SPRINTF("SCSIRSTO ");
3039 SPRINTF(");");
3040
3041 SPRINTF(" SCSISIG(");
3042 s = GETPORT(SCSISIG);
3043 switch (s & P_MASK) {
3044 case P_DATAO:
3045 SPRINTF("DATA OUT");
3046 break;
3047 case P_DATAI:
3048 SPRINTF("DATA IN");
3049 break;
3050 case P_CMD:
3051 SPRINTF("COMMAND");
3052 break;
3053 case P_STATUS:
3054 SPRINTF("STATUS");
3055 break;
3056 case P_MSGO:
3057 SPRINTF("MESSAGE OUT");
3058 break;
3059 case P_MSGI:
3060 SPRINTF("MESSAGE IN");
3061 break;
3062 default:
3063 SPRINTF("*invalid*");
3064 break;
3065 }
3066
3067 SPRINTF("); ");
3068
3069 SPRINTF("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");
3070
3071 SPRINTF("SSTAT( ");
3072 s = GETPORT(SSTAT0);
3073 if (s & TARGET)
3074 SPRINTF("TARGET ");
3075 if (s & SELDO)
3076 SPRINTF("SELDO ");
3077 if (s & SELDI)
3078 SPRINTF("SELDI ");
3079 if (s & SELINGO)
3080 SPRINTF("SELINGO ");
3081 if (s & SWRAP)
3082 SPRINTF("SWRAP ");
3083 if (s & SDONE)
3084 SPRINTF("SDONE ");
3085 if (s & SPIORDY)
3086 SPRINTF("SPIORDY ");
3087 if (s & DMADONE)
3088 SPRINTF("DMADONE ");
3089
3090 s = GETPORT(SSTAT1);
3091 if (s & SELTO)
3092 SPRINTF("SELTO ");
3093 if (s & ATNTARG)
3094 SPRINTF("ATNTARG ");
3095 if (s & SCSIRSTI)
3096 SPRINTF("SCSIRSTI ");
3097 if (s & PHASEMIS)
3098 SPRINTF("PHASEMIS ");
3099 if (s & BUSFREE)
3100 SPRINTF("BUSFREE ");
3101 if (s & SCSIPERR)
3102 SPRINTF("SCSIPERR ");
3103 if (s & PHASECHG)
3104 SPRINTF("PHASECHG ");
3105 if (s & REQINIT)
3106 SPRINTF("REQINIT ");
3107 SPRINTF("); ");
3108
3109
3110 SPRINTF("SSTAT( ");
3111
3112 s = GETPORT(SSTAT0) & GETPORT(SIMODE0);
3113
3114 if (s & TARGET)
3115 SPRINTF("TARGET ");
3116 if (s & SELDO)
3117 SPRINTF("SELDO ");
3118 if (s & SELDI)
3119 SPRINTF("SELDI ");
3120 if (s & SELINGO)
3121 SPRINTF("SELINGO ");
3122 if (s & SWRAP)
3123 SPRINTF("SWRAP ");
3124 if (s & SDONE)
3125 SPRINTF("SDONE ");
3126 if (s & SPIORDY)
3127 SPRINTF("SPIORDY ");
3128 if (s & DMADONE)
3129 SPRINTF("DMADONE ");
3130
3131 s = GETPORT(SSTAT1) & GETPORT(SIMODE1);
3132
3133 if (s & SELTO)
3134 SPRINTF("SELTO ");
3135 if (s & ATNTARG)
3136 SPRINTF("ATNTARG ");
3137 if (s & SCSIRSTI)
3138 SPRINTF("SCSIRSTI ");
3139 if (s & PHASEMIS)
3140 SPRINTF("PHASEMIS ");
3141 if (s & BUSFREE)
3142 SPRINTF("BUSFREE ");
3143 if (s & SCSIPERR)
3144 SPRINTF("SCSIPERR ");
3145 if (s & PHASECHG)
3146 SPRINTF("PHASECHG ");
3147 if (s & REQINIT)
3148 SPRINTF("REQINIT ");
3149 SPRINTF("); ");
3150
3151 SPRINTF("SXFRCTL0( ");
3152
3153 s = GETPORT(SXFRCTL0);
3154 if (s & SCSIEN)
3155 SPRINTF("SCSIEN ");
3156 if (s & DMAEN)
3157 SPRINTF("DMAEN ");
3158 if (s & CH1)
3159 SPRINTF("CH1 ");
3160 if (s & CLRSTCNT)
3161 SPRINTF("CLRSTCNT ");
3162 if (s & SPIOEN)
3163 SPRINTF("SPIOEN ");
3164 if (s & CLRCH1)
3165 SPRINTF("CLRCH1 ");
3166 SPRINTF("); ");
3167
3168 SPRINTF("SIGNAL( ");
3169
3170 s = GETPORT(SCSISIG);
3171 if (s & SIG_ATNI)
3172 SPRINTF("ATNI ");
3173 if (s & SIG_SELI)
3174 SPRINTF("SELI ");
3175 if (s & SIG_BSYI)
3176 SPRINTF("BSYI ");
3177 if (s & SIG_REQI)
3178 SPRINTF("REQI ");
3179 if (s & SIG_ACKI)
3180 SPRINTF("ACKI ");
3181 SPRINTF("); ");
3182
3183 SPRINTF("SELID(%02x), ", GETPORT(SELID));
3184
3185 SPRINTF("STCNT(%d), ", GETSTCNT());
3186
3187 SPRINTF("SSTAT2( ");
3188
3189 s = GETPORT(SSTAT2);
3190 if (s & SOFFSET)
3191 SPRINTF("SOFFSET ");
3192 if (s & SEMPTY)
3193 SPRINTF("SEMPTY ");
3194 if (s & SFULL)
3195 SPRINTF("SFULL ");
3196 SPRINTF("); SFCNT (%d); ", s & (SFULL | SFCNT));
3197
3198 s = GETPORT(SSTAT3);
3199 SPRINTF("SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);
3200
3201 SPRINTF("SSTAT4( ");
3202 s = GETPORT(SSTAT4);
3203 if (s & SYNCERR)
3204 SPRINTF("SYNCERR ");
3205 if (s & FWERR)
3206 SPRINTF("FWERR ");
3207 if (s & FRERR)
3208 SPRINTF("FRERR ");
3209 SPRINTF("); ");
3210
3211 SPRINTF("DMACNTRL0( ");
3212 s = GETPORT(DMACNTRL0);
3213 SPRINTF("%s ", s & _8BIT ? "8BIT" : "16BIT");
3214 SPRINTF("%s ", s & DMA ? "DMA" : "PIO");
3215 SPRINTF("%s ", s & WRITE_READ ? "WRITE" : "READ");
3216 if (s & ENDMA)
3217 SPRINTF("ENDMA ");
3218 if (s & INTEN)
3219 SPRINTF("INTEN ");
3220 if (s & RSTFIFO)
3221 SPRINTF("RSTFIFO ");
3222 if (s & SWINT)
3223 SPRINTF("SWINT ");
3224 SPRINTF("); ");
3225
3226 SPRINTF("DMASTAT( ");
3227 s = GETPORT(DMASTAT);
3228 if (s & ATDONE)
3229 SPRINTF("ATDONE ");
3230 if (s & WORDRDY)
3231 SPRINTF("WORDRDY ");
3232 if (s & DFIFOFULL)
3233 SPRINTF("DFIFOFULL ");
3234 if (s & DFIFOEMP)
3235 SPRINTF("DFIFOEMP ");
3236 SPRINTF(")\n");
3237
3238 SPRINTF("enabled interrupts( ");
3239
3240 s = GETPORT(SIMODE0);
3241 if (s & ENSELDO)
3242 SPRINTF("ENSELDO ");
3243 if (s & ENSELDI)
3244 SPRINTF("ENSELDI ");
3245 if (s & ENSELINGO)
3246 SPRINTF("ENSELINGO ");
3247 if (s & ENSWRAP)
3248 SPRINTF("ENSWRAP ");
3249 if (s & ENSDONE)
3250 SPRINTF("ENSDONE ");
3251 if (s & ENSPIORDY)
3252 SPRINTF("ENSPIORDY ");
3253 if (s & ENDMADONE)
3254 SPRINTF("ENDMADONE ");
3255
3256 s = GETPORT(SIMODE1);
3257 if (s & ENSELTIMO)
3258 SPRINTF("ENSELTIMO ");
3259 if (s & ENATNTARG)
3260 SPRINTF("ENATNTARG ");
3261 if (s & ENPHASEMIS)
3262 SPRINTF("ENPHASEMIS ");
3263 if (s & ENBUSFREE)
3264 SPRINTF("ENBUSFREE ");
3265 if (s & ENSCSIPERR)
3266 SPRINTF("ENSCSIPERR ");
3267 if (s & ENPHASECHG)
3268 SPRINTF("ENPHASECHG ");
3269 if (s & ENREQINIT)
3270 SPRINTF("ENREQINIT ");
3271 SPRINTF(")\n");
3272}
3273
3274static int aha152x_set_info(struct Scsi_Host *shpnt, char *buffer, int length)
3275{
3276 if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0)
3277 return -EINVAL;
3278
3279#if defined(AHA152X_DEBUG)
3280 if(length>14 && strncmp("debug ", buffer+8, 6)==0) {
3281 int debug = HOSTDATA(shpnt)->debug;
3282
3283 HOSTDATA(shpnt)->debug = simple_strtoul(buffer+14, NULL, 0);
3284
3285 printk(KERN_INFO "aha152x%d: debugging options set to 0x%04x (were 0x%04x)\n", HOSTNO, HOSTDATA(shpnt)->debug, debug);
3286 } else
3287#endif
3288#if defined(AHA152X_STAT)
3289 if(length>13 && strncmp("reset", buffer+8, 5)==0) {
3290 int i;
3291
3292 HOSTDATA(shpnt)->total_commands=0;
3293 HOSTDATA(shpnt)->disconnections=0;
3294 HOSTDATA(shpnt)->busfree_without_any_action=0;
3295 HOSTDATA(shpnt)->busfree_without_old_command=0;
3296 HOSTDATA(shpnt)->busfree_without_new_command=0;
3297 HOSTDATA(shpnt)->busfree_without_done_command=0;
3298 HOSTDATA(shpnt)->busfree_with_check_condition=0;
3299 for (i = idle; i<maxstate; i++) {
3300 HOSTDATA(shpnt)->count[i]=0;
3301 HOSTDATA(shpnt)->count_trans[i]=0;
3302 HOSTDATA(shpnt)->time[i]=0;
3303 }
3304
3305 printk(KERN_INFO "aha152x%d: stats reseted.\n", HOSTNO);
3306
3307 } else
3308#endif
3309 {
3310 return -EINVAL;
3311 }
3312
3313
3314 return length;
3315}
3316
3317static int aha152x_show_info(struct seq_file *m, struct Scsi_Host *shpnt)
3318{
3319 int i;
3320 Scsi_Cmnd *ptr;
3321 unsigned long flags;
3322
3323 SPRINTF(AHA152X_REVID "\n");
3324
3325 SPRINTF("ioports 0x%04lx to 0x%04lx\n",
3326 shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1);
3327 SPRINTF("interrupt 0x%02x\n", shpnt->irq);
3328 SPRINTF("disconnection/reconnection %s\n",
3329 RECONNECT ? "enabled" : "disabled");
3330 SPRINTF("parity checking %s\n",
3331 PARITY ? "enabled" : "disabled");
3332 SPRINTF("synchronous transfers %s\n",
3333 SYNCHRONOUS ? "enabled" : "disabled");
3334 SPRINTF("%d commands currently queued\n", HOSTDATA(shpnt)->commands);
3335
3336 if(SYNCHRONOUS) {
3337 SPRINTF("synchronously operating targets (tick=50 ns):\n");
3338 for (i = 0; i < 8; i++)
3339 if (HOSTDATA(shpnt)->syncrate[i] & 0x7f)
3340 SPRINTF("target %d: period %dT/%dns; req/ack offset %d\n",
3341 i,
3342 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2),
3343 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50,
3344 HOSTDATA(shpnt)->syncrate[i] & 0x0f);
3345 }
3346#if defined(AHA152X_DEBUG)
3347#define PDEBUG(flags,txt) \
3348 if(HOSTDATA(shpnt)->debug & flags) SPRINTF("(%s) ", txt);
3349
3350 SPRINTF("enabled debugging options: ");
3351
3352 PDEBUG(debug_procinfo, "procinfo");
3353 PDEBUG(debug_queue, "queue");
3354 PDEBUG(debug_intr, "interrupt");
3355 PDEBUG(debug_selection, "selection");
3356 PDEBUG(debug_msgo, "message out");
3357 PDEBUG(debug_msgi, "message in");
3358 PDEBUG(debug_status, "status");
3359 PDEBUG(debug_cmd, "command");
3360 PDEBUG(debug_datai, "data in");
3361 PDEBUG(debug_datao, "data out");
3362 PDEBUG(debug_eh, "eh");
3363 PDEBUG(debug_locking, "locks");
3364 PDEBUG(debug_phases, "phases");
3365
3366 SPRINTF("\n");
3367#endif
3368
3369 SPRINTF("\nqueue status:\n");
3370 DO_LOCK(flags);
3371 if (ISSUE_SC) {
3372 SPRINTF("not yet issued commands:\n");
3373 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
3374 get_command(m, ptr);
3375 } else
3376 SPRINTF("no not yet issued commands\n");
3377 DO_UNLOCK(flags);
3378
3379 if (CURRENT_SC) {
3380 SPRINTF("current command:\n");
3381 get_command(m, CURRENT_SC);
3382 } else
3383 SPRINTF("no current command\n");
3384
3385 if (DISCONNECTED_SC) {
3386 SPRINTF("disconnected commands:\n");
3387 for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr))
3388 get_command(m, ptr);
3389 } else
3390 SPRINTF("no disconnected commands\n");
3391
3392 get_ports(m, shpnt);
3393
3394#if defined(AHA152X_STAT)
3395 SPRINTF("statistics:\n"
3396 "total commands: %d\n"
3397 "disconnections: %d\n"
3398 "busfree with check condition: %d\n"
3399 "busfree without old command: %d\n"
3400 "busfree without new command: %d\n"
3401 "busfree without done command: %d\n"
3402 "busfree without any action: %d\n"
3403 "state "
3404 "transitions "
3405 "count "
3406 "time\n",
3407 HOSTDATA(shpnt)->total_commands,
3408 HOSTDATA(shpnt)->disconnections,
3409 HOSTDATA(shpnt)->busfree_with_check_condition,
3410 HOSTDATA(shpnt)->busfree_without_old_command,
3411 HOSTDATA(shpnt)->busfree_without_new_command,
3412 HOSTDATA(shpnt)->busfree_without_done_command,
3413 HOSTDATA(shpnt)->busfree_without_any_action);
3414 for(i=0; i<maxstate; i++) {
3415 SPRINTF("%-10s %-12d %-12d %-12ld\n",
3416 states[i].name,
3417 HOSTDATA(shpnt)->count_trans[i],
3418 HOSTDATA(shpnt)->count[i],
3419 HOSTDATA(shpnt)->time[i]);
3420 }
3421#endif
3422 return 0;
3423}
3424
3425static int aha152x_adjust_queue(struct scsi_device *device)
3426{
3427 blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH);
3428 return 0;
3429}
3430
3431static struct scsi_host_template aha152x_driver_template = {
3432 .module = THIS_MODULE,
3433 .name = AHA152X_REVID,
3434 .proc_name = "aha152x",
3435 .show_info = aha152x_show_info,
3436 .write_info = aha152x_set_info,
3437 .queuecommand = aha152x_queue,
3438 .eh_abort_handler = aha152x_abort,
3439 .eh_device_reset_handler = aha152x_device_reset,
3440 .eh_bus_reset_handler = aha152x_bus_reset,
3441 .eh_host_reset_handler = aha152x_host_reset,
3442 .bios_param = aha152x_biosparam,
3443 .can_queue = 1,
3444 .this_id = 7,
3445 .sg_tablesize = SG_ALL,
3446 .cmd_per_lun = 1,
3447 .use_clustering = DISABLE_CLUSTERING,
3448 .slave_alloc = aha152x_adjust_queue,
3449};
3450
3451#if !defined(PCMCIA)
3452static int setup_count;
3453static struct aha152x_setup setup[2];
3454
3455/* possible i/o addresses for the AIC-6260; default first */
3456static unsigned short ports[] = { 0x340, 0x140 };
3457
3458#if !defined(SKIP_BIOSTEST)
3459/* possible locations for the Adaptec BIOS; defaults first */
3460static unsigned int addresses[] =
3461{
3462 0xdc000, /* default first */
3463 0xc8000,
3464 0xcc000,
3465 0xd0000,
3466 0xd4000,
3467 0xd8000,
3468 0xe0000,
3469 0xeb800, /* VTech Platinum SMP */
3470 0xf0000,
3471};
3472
3473/* signatures for various AIC-6[23]60 based controllers.
3474 The point in detecting signatures is to avoid useless and maybe
3475 harmful probes on ports. I'm not sure that all listed boards pass
3476 auto-configuration. For those which fail the BIOS signature is
3477 obsolete, because user intervention to supply the configuration is
3478 needed anyway. May be an information whether or not the BIOS supports
3479 extended translation could be also useful here. */
3480static struct signature {
3481 unsigned char *signature;
3482 int sig_offset;
3483 int sig_length;
3484} signatures[] =
3485{
3486 { "Adaptec AHA-1520 BIOS", 0x102e, 21 },
3487 /* Adaptec 152x */
3488 { "Adaptec AHA-1520B", 0x000b, 17 },
3489 /* Adaptec 152x rev B */
3490 { "Adaptec AHA-1520B", 0x0026, 17 },
3491 /* Iomega Jaz Jet ISA (AIC6370Q) */
3492 { "Adaptec ASW-B626 BIOS", 0x1029, 21 },
3493 /* on-board controller */
3494 { "Adaptec BIOS: ASW-B626", 0x000f, 22 },
3495 /* on-board controller */
3496 { "Adaptec ASW-B626 S2", 0x2e6c, 19 },
3497 /* on-board controller */
3498 { "Adaptec BIOS:AIC-6360", 0x000c, 21 },
3499 /* on-board controller */
3500 { "ScsiPro SP-360 BIOS", 0x2873, 19 },
3501 /* ScsiPro-Controller */
3502 { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 },
3503 /* Gigabyte Local-Bus-SCSI */
3504 { "Adaptec BIOS:AVA-282X", 0x000c, 21 },
3505 /* Adaptec 282x */
3506 { "Adaptec IBM Dock II SCSI", 0x2edd, 24 },
3507 /* IBM Thinkpad Dock II */
3508 { "Adaptec BIOS:AHA-1532P", 0x001c, 22 },
3509 /* IBM Thinkpad Dock II SCSI */
3510 { "DTC3520A Host Adapter BIOS", 0x318a, 26 },
3511 /* DTC 3520A ISA SCSI */
3512};
3513#endif /* !SKIP_BIOSTEST */
3514
3515/*
3516 * Test, if port_base is valid.
3517 *
3518 */
3519static int aha152x_porttest(int io_port)
3520{
3521 int i;
3522
3523 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */
3524 for (i = 0; i < 16; i++)
3525 SETPORT(io_port + O_STACK, i);
3526
3527 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */
3528 for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++)
3529 ;
3530
3531 return (i == 16);
3532}
3533
3534static int tc1550_porttest(int io_port)
3535{
3536 int i;
3537
3538 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */
3539 for (i = 0; i < 16; i++)
3540 SETPORT(io_port + O_STACK, i);
3541
3542 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */
3543 for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++)
3544 ;
3545
3546 return (i == 16);
3547}
3548
3549
3550static int checksetup(struct aha152x_setup *setup)
3551{
3552 int i;
3553 for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++)
3554 ;
3555
3556 if (i == ARRAY_SIZE(ports))
3557 return 0;
3558
3559 if (!request_region(setup->io_port, IO_RANGE, "aha152x")) {
3560 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port);
3561 return 0;
3562 }
3563
3564 if( aha152x_porttest(setup->io_port) ) {
3565 setup->tc1550=0;
3566 } else if( tc1550_porttest(setup->io_port) ) {
3567 setup->tc1550=1;
3568 } else {
3569 release_region(setup->io_port, IO_RANGE);
3570 return 0;
3571 }
3572
3573 release_region(setup->io_port, IO_RANGE);
3574
3575 if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX))
3576 return 0;
3577
3578 if ((setup->scsiid < 0) || (setup->scsiid > 7))
3579 return 0;
3580
3581 if ((setup->reconnect < 0) || (setup->reconnect > 1))
3582 return 0;
3583
3584 if ((setup->parity < 0) || (setup->parity > 1))
3585 return 0;
3586
3587 if ((setup->synchronous < 0) || (setup->synchronous > 1))
3588 return 0;
3589
3590 if ((setup->ext_trans < 0) || (setup->ext_trans > 1))
3591 return 0;
3592
3593
3594 return 1;
3595}
3596
3597
3598static int __init aha152x_init(void)
3599{
3600 int i, j, ok;
3601#if defined(AUTOCONF)
3602 aha152x_config conf;
3603#endif
3604#ifdef __ISAPNP__
3605 struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL};
3606#endif
3607
3608 if ( setup_count ) {
3609 printk(KERN_INFO "aha152x: processing commandline: ");
3610
3611 for (i = 0; i<setup_count; i++) {
3612 if (!checksetup(&setup[i])) {
3613 printk(KERN_ERR "\naha152x: %s\n", setup[i].conf);
3614 printk(KERN_ERR "aha152x: invalid line\n");
3615 }
3616 }
3617 printk("ok\n");
3618 }
3619
3620#if defined(SETUP0)
3621 if (setup_count < ARRAY_SIZE(setup)) {
3622 struct aha152x_setup override = SETUP0;
3623
3624 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3625 if (!checksetup(&override)) {
3626 printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3627 override.io_port,
3628 override.irq,
3629 override.scsiid,
3630 override.reconnect,
3631 override.parity,
3632 override.synchronous,
3633 override.delay,
3634 override.ext_trans);
3635 } else
3636 setup[setup_count++] = override;
3637 }
3638 }
3639#endif
3640
3641#if defined(SETUP1)
3642 if (setup_count < ARRAY_SIZE(setup)) {
3643 struct aha152x_setup override = SETUP1;
3644
3645 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3646 if (!checksetup(&override)) {
3647 printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3648 override.io_port,
3649 override.irq,
3650 override.scsiid,
3651 override.reconnect,
3652 override.parity,
3653 override.synchronous,
3654 override.delay,
3655 override.ext_trans);
3656 } else
3657 setup[setup_count++] = override;
3658 }
3659 }
3660#endif
3661
3662#if defined(MODULE)
3663 if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) {
3664 if(aha152x[0]!=0) {
3665 setup[setup_count].conf = "";
3666 setup[setup_count].io_port = aha152x[0];
3667 setup[setup_count].irq = aha152x[1];
3668 setup[setup_count].scsiid = aha152x[2];
3669 setup[setup_count].reconnect = aha152x[3];
3670 setup[setup_count].parity = aha152x[4];
3671 setup[setup_count].synchronous = aha152x[5];
3672 setup[setup_count].delay = aha152x[6];
3673 setup[setup_count].ext_trans = aha152x[7];
3674#if defined(AHA152X_DEBUG)
3675 setup[setup_count].debug = aha152x[8];
3676#endif
3677 } else if(io[0]!=0 || irq[0]!=0) {
3678 if(io[0]!=0) setup[setup_count].io_port = io[0];
3679 if(irq[0]!=0) setup[setup_count].irq = irq[0];
3680
3681 setup[setup_count].scsiid = scsiid[0];
3682 setup[setup_count].reconnect = reconnect[0];
3683 setup[setup_count].parity = parity[0];
3684 setup[setup_count].synchronous = sync[0];
3685 setup[setup_count].delay = delay[0];
3686 setup[setup_count].ext_trans = exttrans[0];
3687#if defined(AHA152X_DEBUG)
3688 setup[setup_count].debug = debug[0];
3689#endif
3690 }
3691
3692 if (checksetup(&setup[setup_count]))
3693 setup_count++;
3694 else
3695 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",
3696 setup[setup_count].io_port,
3697 setup[setup_count].irq,
3698 setup[setup_count].scsiid,
3699 setup[setup_count].reconnect,
3700 setup[setup_count].parity,
3701 setup[setup_count].synchronous,
3702 setup[setup_count].delay,
3703 setup[setup_count].ext_trans);
3704 }
3705
3706 if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) {
3707 if(aha152x1[0]!=0) {
3708 setup[setup_count].conf = "";
3709 setup[setup_count].io_port = aha152x1[0];
3710 setup[setup_count].irq = aha152x1[1];
3711 setup[setup_count].scsiid = aha152x1[2];
3712 setup[setup_count].reconnect = aha152x1[3];
3713 setup[setup_count].parity = aha152x1[4];
3714 setup[setup_count].synchronous = aha152x1[5];
3715 setup[setup_count].delay = aha152x1[6];
3716 setup[setup_count].ext_trans = aha152x1[7];
3717#if defined(AHA152X_DEBUG)
3718 setup[setup_count].debug = aha152x1[8];
3719#endif
3720 } else if(io[1]!=0 || irq[1]!=0) {
3721 if(io[1]!=0) setup[setup_count].io_port = io[1];
3722 if(irq[1]!=0) setup[setup_count].irq = irq[1];
3723
3724 setup[setup_count].scsiid = scsiid[1];
3725 setup[setup_count].reconnect = reconnect[1];
3726 setup[setup_count].parity = parity[1];
3727 setup[setup_count].synchronous = sync[1];
3728 setup[setup_count].delay = delay[1];
3729 setup[setup_count].ext_trans = exttrans[1];
3730#if defined(AHA152X_DEBUG)
3731 setup[setup_count].debug = debug[1];
3732#endif
3733 }
3734 if (checksetup(&setup[setup_count]))
3735 setup_count++;
3736 else
3737 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",
3738 setup[setup_count].io_port,
3739 setup[setup_count].irq,
3740 setup[setup_count].scsiid,
3741 setup[setup_count].reconnect,
3742 setup[setup_count].parity,
3743 setup[setup_count].synchronous,
3744 setup[setup_count].delay,
3745 setup[setup_count].ext_trans);
3746 }
3747#endif
3748
3749#ifdef __ISAPNP__
3750 for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) {
3751 while ( setup_count<ARRAY_SIZE(setup) &&
3752 (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) {
3753 if (pnp_device_attach(dev) < 0)
3754 continue;
3755
3756 if (pnp_activate_dev(dev) < 0) {
3757 pnp_device_detach(dev);
3758 continue;
3759 }
3760
3761 if (!pnp_port_valid(dev, 0)) {
3762 pnp_device_detach(dev);
3763 continue;
3764 }
3765
3766 if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) {
3767 pnp_device_detach(dev);
3768 continue;
3769 }
3770
3771 setup[setup_count].io_port = pnp_port_start(dev, 0);
3772 setup[setup_count].irq = pnp_irq(dev, 0);
3773 setup[setup_count].scsiid = 7;
3774 setup[setup_count].reconnect = 1;
3775 setup[setup_count].parity = 1;
3776 setup[setup_count].synchronous = 1;
3777 setup[setup_count].delay = DELAY_DEFAULT;
3778 setup[setup_count].ext_trans = 0;
3779#if defined(AHA152X_DEBUG)
3780 setup[setup_count].debug = DEBUG_DEFAULT;
3781#endif
3782#if defined(__ISAPNP__)
3783 pnpdev[setup_count] = dev;
3784#endif
3785 printk (KERN_INFO
3786 "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n",
3787 setup[setup_count].io_port, setup[setup_count].irq);
3788 setup_count++;
3789 }
3790 }
3791#endif
3792
3793#if defined(AUTOCONF)
3794 if (setup_count<ARRAY_SIZE(setup)) {
3795#if !defined(SKIP_BIOSTEST)
3796 ok = 0;
3797 for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) {
3798 void __iomem *p = ioremap(addresses[i], 0x4000);
3799 if (!p)
3800 continue;
3801 for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++)
3802 ok = check_signature(p + signatures[j].sig_offset,
3803 signatures[j].signature, signatures[j].sig_length);
3804 iounmap(p);
3805 }
3806 if (!ok && setup_count == 0)
3807 return -ENODEV;
3808
3809 printk(KERN_INFO "aha152x: BIOS test: passed, ");
3810#else
3811 printk(KERN_INFO "aha152x: ");
3812#endif /* !SKIP_BIOSTEST */
3813
3814 ok = 0;
3815 for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) {
3816 if ((setup_count == 1) && (setup[0].io_port == ports[i]))
3817 continue;
3818
3819 if (!request_region(ports[i], IO_RANGE, "aha152x")) {
3820 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]);
3821 continue;
3822 }
3823
3824 if (aha152x_porttest(ports[i])) {
3825 setup[setup_count].tc1550 = 0;
3826
3827 conf.cf_port =
3828 (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB);
3829 } else if (tc1550_porttest(ports[i])) {
3830 setup[setup_count].tc1550 = 1;
3831
3832 conf.cf_port =
3833 (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB);
3834 } else {
3835 release_region(ports[i], IO_RANGE);
3836 continue;
3837 }
3838
3839 release_region(ports[i], IO_RANGE);
3840
3841 ok++;
3842 setup[setup_count].io_port = ports[i];
3843 setup[setup_count].irq = IRQ_MIN + conf.cf_irq;
3844 setup[setup_count].scsiid = conf.cf_id;
3845 setup[setup_count].reconnect = conf.cf_tardisc;
3846 setup[setup_count].parity = !conf.cf_parity;
3847 setup[setup_count].synchronous = conf.cf_syncneg;
3848 setup[setup_count].delay = DELAY_DEFAULT;
3849 setup[setup_count].ext_trans = 0;
3850#if defined(AHA152X_DEBUG)
3851 setup[setup_count].debug = DEBUG_DEFAULT;
3852#endif
3853 setup_count++;
3854
3855 }
3856
3857 if (ok)
3858 printk("auto configuration: ok, ");
3859 }
3860#endif
3861
3862 printk("%d controller(s) configured\n", setup_count);
3863
3864 for (i=0; i<setup_count; i++) {
3865 if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) {
3866 struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]);
3867
3868 if( !shpnt ) {
3869 release_region(setup[i].io_port, IO_RANGE);
3870#if defined(__ISAPNP__)
3871 } else if( pnpdev[i] ) {
3872 HOSTDATA(shpnt)->pnpdev=pnpdev[i];
3873 pnpdev[i]=NULL;
3874#endif
3875 }
3876 } else {
3877 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port);
3878 }
3879
3880#if defined(__ISAPNP__)
3881 if( pnpdev[i] )
3882 pnp_device_detach(pnpdev[i]);
3883#endif
3884 }
3885
3886 return 0;
3887}
3888
3889static void __exit aha152x_exit(void)
3890{
3891 struct aha152x_hostdata *hd, *tmp;
3892
3893 list_for_each_entry_safe(hd, tmp, &aha152x_host_list, host_list) {
3894 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
3895
3896 aha152x_release(shost);
3897 }
3898}
3899
3900module_init(aha152x_init);
3901module_exit(aha152x_exit);
3902
3903#if !defined(MODULE)
3904static int __init aha152x_setup(char *str)
3905{
3906#if defined(AHA152X_DEBUG)
3907 int ints[11];
3908#else
3909 int ints[10];
3910#endif
3911 get_options(str, ARRAY_SIZE(ints), ints);
3912
3913 if(setup_count>=ARRAY_SIZE(setup)) {
3914 printk(KERN_ERR "aha152x: you can only configure up to two controllers\n");
3915 return 1;
3916 }
3917
3918 setup[setup_count].conf = str;
3919 setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340;
3920 setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11;
3921 setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7;
3922 setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1;
3923 setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1;
3924 setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1;
3925 setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT;
3926 setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0;
3927#if defined(AHA152X_DEBUG)
3928 setup[setup_count].debug = ints[0] >= 9 ? ints[9] : DEBUG_DEFAULT;
3929 if (ints[0] > 9) {
3930 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
3931 "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>[,<DEBUG>]]]]]]]]\n");
3932#else
3933 if (ints[0] > 8) { /*}*/
3934 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
3935 "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n");
3936#endif
3937 } else {
3938 setup_count++;
3939 return 0;
3940 }
3941
3942 return 1;
3943}
3944__setup("aha152x=", aha152x_setup);
3945#endif
3946
3947#endif /* !PCMCIA */
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
266static 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
292static inline void
293CMD_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
312enum {
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
327MODULE_AUTHOR("Jürgen Fischer");
328MODULE_DESCRIPTION(AHA152X_REVID);
329MODULE_LICENSE("GPL");
330
331#if !defined(PCMCIA)
332#if defined(MODULE)
333static int io[] = {0, 0};
334module_param_array(io, int, NULL, 0);
335MODULE_PARM_DESC(io,"base io address of controller");
336
337static int irq[] = {0, 0};
338module_param_array(irq, int, NULL, 0);
339MODULE_PARM_DESC(irq,"interrupt for controller");
340
341static int scsiid[] = {7, 7};
342module_param_array(scsiid, int, NULL, 0);
343MODULE_PARM_DESC(scsiid,"scsi id of controller");
344
345static int reconnect[] = {1, 1};
346module_param_array(reconnect, int, NULL, 0);
347MODULE_PARM_DESC(reconnect,"allow targets to disconnect");
348
349static int parity[] = {1, 1};
350module_param_array(parity, int, NULL, 0);
351MODULE_PARM_DESC(parity,"use scsi parity");
352
353static int sync[] = {1, 1};
354module_param_array(sync, int, NULL, 0);
355MODULE_PARM_DESC(sync,"use synchronous transfers");
356
357static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT};
358module_param_array(delay, int, NULL, 0);
359MODULE_PARM_DESC(delay,"scsi reset delay");
360
361static int exttrans[] = {0, 0};
362module_param_array(exttrans, int, NULL, 0);
363MODULE_PARM_DESC(exttrans,"use extended translation");
364
365static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
366module_param_array(aha152x, int, NULL, 0);
367MODULE_PARM_DESC(aha152x, "parameters for first controller");
368
369static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
370module_param_array(aha152x1, int, NULL, 0);
371MODULE_PARM_DESC(aha152x1, "parameters for second controller");
372#endif /* MODULE */
373
374#ifdef __ISAPNP__
375static 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};
391MODULE_DEVICE_TABLE(isapnp, id_table);
392#endif /* ISAPNP */
393
394#endif /* !PCMCIA */
395
396static struct scsi_host_template aha152x_driver_template;
397
398/*
399 * internal states of the host
400 *
401 */
402enum 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 */
424struct 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 */
512struct 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 */
571static void seldi_run(struct Scsi_Host *shpnt);
572static void seldo_run(struct Scsi_Host *shpnt);
573static void selto_run(struct Scsi_Host *shpnt);
574static void busfree_run(struct Scsi_Host *shpnt);
575
576static void msgo_init(struct Scsi_Host *shpnt);
577static void msgo_run(struct Scsi_Host *shpnt);
578static void msgo_end(struct Scsi_Host *shpnt);
579
580static void cmd_init(struct Scsi_Host *shpnt);
581static void cmd_run(struct Scsi_Host *shpnt);
582static void cmd_end(struct Scsi_Host *shpnt);
583
584static void datai_init(struct Scsi_Host *shpnt);
585static void datai_run(struct Scsi_Host *shpnt);
586static void datai_end(struct Scsi_Host *shpnt);
587
588static void datao_init(struct Scsi_Host *shpnt);
589static void datao_run(struct Scsi_Host *shpnt);
590static void datao_end(struct Scsi_Host *shpnt);
591
592static void status_run(struct Scsi_Host *shpnt);
593
594static void msgi_run(struct Scsi_Host *shpnt);
595static void msgi_end(struct Scsi_Host *shpnt);
596
597static void parerr_run(struct Scsi_Host *shpnt);
598static void rsti_run(struct Scsi_Host *shpnt);
599
600static void is_complete(struct Scsi_Host *shpnt);
601
602/*
603 * driver states
604 *
605 */
606static 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 */
630static irqreturn_t intr(int irq, void *dev_id);
631static void reset_ports(struct Scsi_Host *shpnt);
632static void aha152x_error(struct Scsi_Host *shpnt, char *msg);
633static void done(struct Scsi_Host *shpnt, int error);
634
635/* diagnostics */
636static void show_command(Scsi_Cmnd * ptr);
637static void show_queues(struct Scsi_Host *shpnt);
638static void disp_enintr(struct Scsi_Host *shpnt);
639
640
641/*
642 * queue services:
643 *
644 */
645static 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
659static 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
671static 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
692static 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
713static 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
723struct 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
848out_host_put:
849 list_del(&HOSTDATA(shpnt)->host_list);
850 scsi_host_put(shpnt);
851
852 return NULL;
853}
854
855void 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 */
884static 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 */
915static 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 */
990static int aha152x_queue_lck(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
991{
992 return aha152x_internal_queue(SCpnt, NULL, 0, done);
993}
994
995static DEF_SCSI_QCMD(aha152x_queue)
996
997
998/*
999 *
1000 */
1001static 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 */
1014static 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 */
1055static 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
1113static 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 */
1144static int aha152x_bus_reset_host(struct Scsi_Host *shpnt)
1145{
1146 unsigned long flags;
1147
1148 DO_LOCK(flags);
1149
1150 free_hard_reset_SCs(shpnt, &ISSUE_SC);
1151 free_hard_reset_SCs(shpnt, &DISCONNECTED_SC);
1152
1153 SETPORT(SCSISEQ, SCSIRSTO);
1154 mdelay(256);
1155 SETPORT(SCSISEQ, 0);
1156 mdelay(DELAY);
1157
1158 setup_expected_interrupts(shpnt);
1159 if(HOSTDATA(shpnt)->commands==0)
1160 SETPORT(PORTA, 0);
1161
1162 DO_UNLOCK(flags);
1163
1164 return SUCCESS;
1165}
1166
1167/*
1168 * Reset the bus
1169 *
1170 */
1171static int aha152x_bus_reset(Scsi_Cmnd *SCpnt)
1172{
1173 return aha152x_bus_reset_host(SCpnt->device->host);
1174}
1175
1176/*
1177 * Restore default values to the AIC-6260 registers and reset the fifos
1178 *
1179 */
1180static void reset_ports(struct Scsi_Host *shpnt)
1181{
1182 unsigned long flags;
1183
1184 /* disable interrupts */
1185 SETPORT(DMACNTRL0, RSTFIFO);
1186
1187 SETPORT(SCSISEQ, 0);
1188
1189 SETPORT(SXFRCTL1, 0);
1190 SETPORT(SCSISIG, 0);
1191 SETRATE(0);
1192
1193 /* clear all interrupt conditions */
1194 SETPORT(SSTAT0, 0x7f);
1195 SETPORT(SSTAT1, 0xef);
1196
1197 SETPORT(SSTAT4, SYNCERR | FWERR | FRERR);
1198
1199 SETPORT(DMACNTRL0, 0);
1200 SETPORT(DMACNTRL1, 0);
1201
1202 SETPORT(BRSTCNTRL, 0xf1);
1203
1204 /* clear SCSI fifos and transfer count */
1205 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1206 SETPORT(SXFRCTL0, CH1);
1207
1208 DO_LOCK(flags);
1209 setup_expected_interrupts(shpnt);
1210 DO_UNLOCK(flags);
1211}
1212
1213/*
1214 * Reset the host (bus and controller)
1215 *
1216 */
1217int aha152x_host_reset_host(struct Scsi_Host *shpnt)
1218{
1219 aha152x_bus_reset_host(shpnt);
1220 reset_ports(shpnt);
1221
1222 return SUCCESS;
1223}
1224
1225/*
1226 * Reset the host (bus and controller)
1227 *
1228 */
1229static int aha152x_host_reset(Scsi_Cmnd *SCpnt)
1230{
1231 return aha152x_host_reset_host(SCpnt->device->host);
1232}
1233
1234/*
1235 * Return the "logical geometry"
1236 *
1237 */
1238static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev,
1239 sector_t capacity, int *info_array)
1240{
1241 struct Scsi_Host *shpnt = sdev->host;
1242
1243 /* try default translation */
1244 info_array[0] = 64;
1245 info_array[1] = 32;
1246 info_array[2] = (unsigned long)capacity / (64 * 32);
1247
1248 /* for disks >1GB do some guessing */
1249 if (info_array[2] >= 1024) {
1250 int info[3];
1251
1252 /* try to figure out the geometry from the partition table */
1253 if (scsicam_bios_param(bdev, capacity, info) < 0 ||
1254 !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) {
1255 if (EXT_TRANS) {
1256 printk(KERN_NOTICE
1257 "aha152x: unable to verify geometry for disk with >1GB.\n"
1258 " using extended translation.\n");
1259 info_array[0] = 255;
1260 info_array[1] = 63;
1261 info_array[2] = (unsigned long)capacity / (255 * 63);
1262 } else {
1263 printk(KERN_NOTICE
1264 "aha152x: unable to verify geometry for disk with >1GB.\n"
1265 " Using default translation. Please verify yourself.\n"
1266 " Perhaps you need to enable extended translation in the driver.\n"
1267 " See Documentation/scsi/aha152x.txt for details.\n");
1268 }
1269 } else {
1270 info_array[0] = info[0];
1271 info_array[1] = info[1];
1272 info_array[2] = info[2];
1273
1274 if (info[0] == 255 && !EXT_TRANS) {
1275 printk(KERN_NOTICE
1276 "aha152x: current partition table is using extended translation.\n"
1277 " using it also, although it's not explicitly enabled.\n");
1278 }
1279 }
1280 }
1281
1282 return 0;
1283}
1284
1285/*
1286 * Internal done function
1287 *
1288 */
1289static void done(struct Scsi_Host *shpnt, int error)
1290{
1291 if (CURRENT_SC) {
1292 if(DONE_SC)
1293 scmd_printk(KERN_ERR, CURRENT_SC,
1294 "there's already a completed command %p "
1295 "- will cause abort\n", DONE_SC);
1296
1297 DONE_SC = CURRENT_SC;
1298 CURRENT_SC = NULL;
1299 DONE_SC->result = error;
1300 } else
1301 printk(KERN_ERR "aha152x: done() called outside of command\n");
1302}
1303
1304static struct work_struct aha152x_tq;
1305
1306/*
1307 * Run service completions on the card with interrupts enabled.
1308 *
1309 */
1310static void run(struct work_struct *work)
1311{
1312 struct aha152x_hostdata *hd;
1313
1314 list_for_each_entry(hd, &aha152x_host_list, host_list) {
1315 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
1316
1317 is_complete(shost);
1318 }
1319}
1320
1321/*
1322 * Interrupt handler
1323 *
1324 */
1325static irqreturn_t intr(int irqno, void *dev_id)
1326{
1327 struct Scsi_Host *shpnt = dev_id;
1328 unsigned long flags;
1329 unsigned char rev, dmacntrl0;
1330
1331 /*
1332 * Read a couple of registers that are known to not be all 1's. If
1333 * we read all 1's (-1), that means that either:
1334 *
1335 * a. The host adapter chip has gone bad, and we cannot control it,
1336 * OR
1337 * b. The host adapter is a PCMCIA card that has been ejected
1338 *
1339 * In either case, we cannot do anything with the host adapter at
1340 * this point in time. So just ignore the interrupt and return.
1341 * In the latter case, the interrupt might actually be meant for
1342 * someone else sharing this IRQ, and that driver will handle it.
1343 */
1344 rev = GETPORT(REV);
1345 dmacntrl0 = GETPORT(DMACNTRL0);
1346 if ((rev == 0xFF) && (dmacntrl0 == 0xFF))
1347 return IRQ_NONE;
1348
1349 if( TESTLO(DMASTAT, INTSTAT) )
1350 return IRQ_NONE;
1351
1352 /* no more interrupts from the controller, while we're busy.
1353 INTEN is restored by the BH handler */
1354 CLRBITS(DMACNTRL0, INTEN);
1355
1356 DO_LOCK(flags);
1357 if( HOSTDATA(shpnt)->service==0 ) {
1358 HOSTDATA(shpnt)->service=1;
1359
1360 /* Poke the BH handler */
1361 INIT_WORK(&aha152x_tq, run);
1362 schedule_work(&aha152x_tq);
1363 }
1364 DO_UNLOCK(flags);
1365
1366 return IRQ_HANDLED;
1367}
1368
1369/*
1370 * busfree phase
1371 * - handle completition/disconnection/error of current command
1372 * - start selection for next command (if any)
1373 */
1374static void busfree_run(struct Scsi_Host *shpnt)
1375{
1376 unsigned long flags;
1377#if defined(AHA152X_STAT)
1378 int action=0;
1379#endif
1380
1381 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1382 SETPORT(SXFRCTL0, CH1);
1383
1384 SETPORT(SSTAT1, CLRBUSFREE);
1385
1386 if(CURRENT_SC) {
1387#if defined(AHA152X_STAT)
1388 action++;
1389#endif
1390 CURRENT_SC->SCp.phase &= ~syncneg;
1391
1392 if(CURRENT_SC->SCp.phase & completed) {
1393 /* target sent COMMAND COMPLETE */
1394 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16));
1395
1396 } else if(CURRENT_SC->SCp.phase & aborted) {
1397 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_ABORT << 16));
1398
1399 } else if(CURRENT_SC->SCp.phase & resetted) {
1400 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_RESET << 16));
1401
1402 } else if(CURRENT_SC->SCp.phase & disconnected) {
1403 /* target sent DISCONNECT */
1404#if defined(AHA152X_STAT)
1405 HOSTDATA(shpnt)->disconnections++;
1406#endif
1407 append_SC(&DISCONNECTED_SC, CURRENT_SC);
1408 CURRENT_SC->SCp.phase |= 1 << 16;
1409 CURRENT_SC = NULL;
1410
1411 } else {
1412 done(shpnt, DID_ERROR << 16);
1413 }
1414#if defined(AHA152X_STAT)
1415 } else {
1416 HOSTDATA(shpnt)->busfree_without_old_command++;
1417#endif
1418 }
1419
1420 DO_LOCK(flags);
1421
1422 if(DONE_SC) {
1423#if defined(AHA152X_STAT)
1424 action++;
1425#endif
1426
1427 if(DONE_SC->SCp.phase & check_condition) {
1428 struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC;
1429 struct aha152x_scdata *sc = SCDATA(cmd);
1430
1431 scsi_eh_restore_cmnd(cmd, &sc->ses);
1432
1433 cmd->SCp.Status = SAM_STAT_CHECK_CONDITION;
1434
1435 HOSTDATA(shpnt)->commands--;
1436 if (!HOSTDATA(shpnt)->commands)
1437 SETPORT(PORTA, 0); /* turn led off */
1438 } else if(DONE_SC->SCp.Status==SAM_STAT_CHECK_CONDITION) {
1439#if defined(AHA152X_STAT)
1440 HOSTDATA(shpnt)->busfree_with_check_condition++;
1441#endif
1442
1443 if(!(DONE_SC->SCp.phase & not_issued)) {
1444 struct aha152x_scdata *sc;
1445 Scsi_Cmnd *ptr = DONE_SC;
1446 DONE_SC=NULL;
1447
1448 sc = SCDATA(ptr);
1449 /* It was allocated in aha152x_internal_queue? */
1450 BUG_ON(!sc);
1451 scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0);
1452
1453 DO_UNLOCK(flags);
1454 aha152x_internal_queue(ptr, NULL, check_condition, ptr->scsi_done);
1455 DO_LOCK(flags);
1456 }
1457 }
1458
1459 if(DONE_SC && DONE_SC->scsi_done) {
1460 Scsi_Cmnd *ptr = DONE_SC;
1461 DONE_SC=NULL;
1462
1463 /* turn led off, when no commands are in the driver */
1464 HOSTDATA(shpnt)->commands--;
1465 if (!HOSTDATA(shpnt)->commands)
1466 SETPORT(PORTA, 0); /* turn led off */
1467
1468 if(ptr->scsi_done != reset_done) {
1469 kfree(ptr->host_scribble);
1470 ptr->host_scribble=NULL;
1471 }
1472
1473 DO_UNLOCK(flags);
1474 ptr->scsi_done(ptr);
1475 DO_LOCK(flags);
1476 }
1477
1478 DONE_SC=NULL;
1479#if defined(AHA152X_STAT)
1480 } else {
1481 HOSTDATA(shpnt)->busfree_without_done_command++;
1482#endif
1483 }
1484
1485 if(ISSUE_SC)
1486 CURRENT_SC = remove_first_SC(&ISSUE_SC);
1487
1488 DO_UNLOCK(flags);
1489
1490 if(CURRENT_SC) {
1491#if defined(AHA152X_STAT)
1492 action++;
1493#endif
1494 CURRENT_SC->SCp.phase |= selecting;
1495
1496 /* clear selection timeout */
1497 SETPORT(SSTAT1, SELTO);
1498
1499 SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id);
1500 SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER);
1501 SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0));
1502 } else {
1503#if defined(AHA152X_STAT)
1504 HOSTDATA(shpnt)->busfree_without_new_command++;
1505#endif
1506 SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0);
1507 }
1508
1509#if defined(AHA152X_STAT)
1510 if(!action)
1511 HOSTDATA(shpnt)->busfree_without_any_action++;
1512#endif
1513}
1514
1515/*
1516 * Selection done (OUT)
1517 * - queue IDENTIFY message and SDTR to selected target for message out
1518 * (ATN asserted automagically via ENAUTOATNO in busfree())
1519 */
1520static void seldo_run(struct Scsi_Host *shpnt)
1521{
1522 SETPORT(SCSISIG, 0);
1523 SETPORT(SSTAT1, CLRBUSFREE);
1524 SETPORT(SSTAT1, CLRPHASECHG);
1525
1526 CURRENT_SC->SCp.phase &= ~(selecting|not_issued);
1527
1528 SETPORT(SCSISEQ, 0);
1529
1530 if (TESTLO(SSTAT0, SELDO)) {
1531 scmd_printk(KERN_ERR, CURRENT_SC,
1532 "aha152x: passing bus free condition\n");
1533 done(shpnt, DID_NO_CONNECT << 16);
1534 return;
1535 }
1536
1537 SETPORT(SSTAT0, CLRSELDO);
1538
1539 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1540
1541 if (CURRENT_SC->SCp.phase & aborting) {
1542 ADDMSGO(ABORT);
1543 } else if (CURRENT_SC->SCp.phase & resetting) {
1544 ADDMSGO(BUS_DEVICE_RESET);
1545 } else if (SYNCNEG==0 && SYNCHRONOUS) {
1546 CURRENT_SC->SCp.phase |= syncneg;
1547 MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8);
1548 SYNCNEG=1; /* negotiation in progress */
1549 }
1550
1551 SETRATE(SYNCRATE);
1552}
1553
1554/*
1555 * Selection timeout
1556 * - return command to mid-level with failure cause
1557 *
1558 */
1559static void selto_run(struct Scsi_Host *shpnt)
1560{
1561 SETPORT(SCSISEQ, 0);
1562 SETPORT(SSTAT1, CLRSELTIMO);
1563
1564 if (!CURRENT_SC)
1565 return;
1566
1567 CURRENT_SC->SCp.phase &= ~selecting;
1568
1569 if (CURRENT_SC->SCp.phase & aborted)
1570 done(shpnt, DID_ABORT << 16);
1571 else if (TESTLO(SSTAT0, SELINGO))
1572 done(shpnt, DID_BUS_BUSY << 16);
1573 else
1574 /* ARBITRATION won, but SELECTION failed */
1575 done(shpnt, DID_NO_CONNECT << 16);
1576}
1577
1578/*
1579 * Selection in done
1580 * - put current command back to issue queue
1581 * (reconnection of a disconnected nexus instead
1582 * of successful selection out)
1583 *
1584 */
1585static void seldi_run(struct Scsi_Host *shpnt)
1586{
1587 int selid;
1588 int target;
1589 unsigned long flags;
1590
1591 SETPORT(SCSISIG, 0);
1592 SETPORT(SSTAT0, CLRSELDI);
1593 SETPORT(SSTAT1, CLRBUSFREE);
1594 SETPORT(SSTAT1, CLRPHASECHG);
1595
1596 if(CURRENT_SC) {
1597 if(!(CURRENT_SC->SCp.phase & not_issued))
1598 scmd_printk(KERN_ERR, CURRENT_SC,
1599 "command should not have been issued yet\n");
1600
1601 DO_LOCK(flags);
1602 append_SC(&ISSUE_SC, CURRENT_SC);
1603 DO_UNLOCK(flags);
1604
1605 CURRENT_SC = NULL;
1606 }
1607
1608 if (!DISCONNECTED_SC)
1609 return;
1610
1611 RECONN_TARGET=-1;
1612
1613 selid = GETPORT(SELID) & ~(1 << shpnt->this_id);
1614
1615 if (selid==0) {
1616 shost_printk(KERN_INFO, shpnt,
1617 "target id unknown (%02x)\n", selid);
1618 return;
1619 }
1620
1621 for(target=7; !(selid & (1 << target)); target--)
1622 ;
1623
1624 if(selid & ~(1 << target)) {
1625 shost_printk(KERN_INFO, shpnt,
1626 "multiple targets reconnected (%02x)\n", selid);
1627 }
1628
1629
1630 SETPORT(SCSIID, (shpnt->this_id << OID_) | target);
1631 SETPORT(SCSISEQ, 0);
1632
1633 SETRATE(HOSTDATA(shpnt)->syncrate[target]);
1634
1635 RECONN_TARGET=target;
1636}
1637
1638/*
1639 * message in phase
1640 * - handle initial message after reconnection to identify
1641 * reconnecting nexus
1642 * - queue command on DISCONNECTED_SC on DISCONNECT message
1643 * - set completed flag on COMMAND COMPLETE
1644 * (other completition code moved to busfree_run)
1645 * - handle response to SDTR
1646 * - clear synchronous transfer agreements on BUS RESET
1647 *
1648 * FIXME: what about SAVE POINTERS, RESTORE POINTERS?
1649 *
1650 */
1651static void msgi_run(struct Scsi_Host *shpnt)
1652{
1653 for(;;) {
1654 int sstat1 = GETPORT(SSTAT1);
1655
1656 if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT))
1657 return;
1658
1659 if (TESTLO(SSTAT0, SPIORDY))
1660 return;
1661
1662 ADDMSGI(GETPORT(SCSIDAT));
1663
1664 if(!CURRENT_SC) {
1665 if(LASTSTATE!=seldi) {
1666 shost_printk(KERN_ERR, shpnt,
1667 "message in w/o current command"
1668 " not after reselection\n");
1669 }
1670
1671 /*
1672 * Handle reselection
1673 */
1674 if(!(MSGI(0) & IDENTIFY_BASE)) {
1675 shost_printk(KERN_ERR, shpnt,
1676 "target didn't identify after reselection\n");
1677 continue;
1678 }
1679
1680 CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f);
1681
1682 if (!CURRENT_SC) {
1683 show_queues(shpnt);
1684 shost_printk(KERN_ERR, shpnt,
1685 "no disconnected command"
1686 " for target %d/%d\n",
1687 RECONN_TARGET, MSGI(0) & 0x3f);
1688 continue;
1689 }
1690
1691 CURRENT_SC->SCp.Message = MSGI(0);
1692 CURRENT_SC->SCp.phase &= ~disconnected;
1693
1694 MSGILEN=0;
1695
1696 /* next message if any */
1697 continue;
1698 }
1699
1700 CURRENT_SC->SCp.Message = MSGI(0);
1701
1702 switch (MSGI(0)) {
1703 case DISCONNECT:
1704 if (!RECONNECT)
1705 scmd_printk(KERN_WARNING, CURRENT_SC,
1706 "target was not allowed to disconnect\n");
1707
1708 CURRENT_SC->SCp.phase |= disconnected;
1709 break;
1710
1711 case COMMAND_COMPLETE:
1712 CURRENT_SC->SCp.phase |= completed;
1713 break;
1714
1715 case MESSAGE_REJECT:
1716 if (SYNCNEG==1) {
1717 scmd_printk(KERN_INFO, CURRENT_SC,
1718 "Synchronous Data Transfer Request"
1719 " was rejected\n");
1720 SYNCNEG=2; /* negotiation completed */
1721 } else
1722 scmd_printk(KERN_INFO, CURRENT_SC,
1723 "inbound message (MESSAGE REJECT)\n");
1724 break;
1725
1726 case SAVE_POINTERS:
1727 break;
1728
1729 case RESTORE_POINTERS:
1730 break;
1731
1732 case EXTENDED_MESSAGE:
1733 if(MSGILEN<2 || MSGILEN<MSGI(1)+2) {
1734 /* not yet completed */
1735 continue;
1736 }
1737
1738 switch (MSGI(2)) {
1739 case EXTENDED_SDTR:
1740 {
1741 long ticks;
1742
1743 if (MSGI(1) != 3) {
1744 scmd_printk(KERN_ERR, CURRENT_SC,
1745 "SDTR message length!=3\n");
1746 break;
1747 }
1748
1749 if (!HOSTDATA(shpnt)->synchronous)
1750 break;
1751
1752 printk(INFO_LEAD, CMDINFO(CURRENT_SC));
1753 spi_print_msg(&MSGI(0));
1754 printk("\n");
1755
1756 ticks = (MSGI(3) * 4 + 49) / 50;
1757
1758 if (syncneg) {
1759 /* negotiation in progress */
1760 if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) {
1761 ADDMSGO(MESSAGE_REJECT);
1762 scmd_printk(KERN_INFO,
1763 CURRENT_SC,
1764 "received Synchronous Data Transfer Request invalid - rejected\n");
1765 break;
1766 }
1767
1768 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1769 } else if (ticks <= 9 && MSGI(4) >= 1) {
1770 ADDMSGO(EXTENDED_MESSAGE);
1771 ADDMSGO(3);
1772 ADDMSGO(EXTENDED_SDTR);
1773 if (ticks < 4) {
1774 ticks = 4;
1775 ADDMSGO(50);
1776 } else
1777 ADDMSGO(MSGI(3));
1778
1779 if (MSGI(4) > 8)
1780 MSGI(4) = 8;
1781
1782 ADDMSGO(MSGI(4));
1783
1784 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1785 } else {
1786 /* requested SDTR is too slow, do it asynchronously */
1787 scmd_printk(KERN_INFO,
1788 CURRENT_SC,
1789 "Synchronous Data Transfer Request too slow - Rejecting\n");
1790 ADDMSGO(MESSAGE_REJECT);
1791 }
1792
1793 /* negotiation completed */
1794 SYNCNEG=2;
1795 SETRATE(SYNCRATE);
1796 }
1797 break;
1798
1799 case BUS_DEVICE_RESET:
1800 {
1801 int i;
1802
1803 for(i=0; i<8; i++) {
1804 HOSTDATA(shpnt)->syncrate[i]=0;
1805 HOSTDATA(shpnt)->syncneg[i]=0;
1806 }
1807
1808 }
1809 break;
1810
1811 case EXTENDED_MODIFY_DATA_POINTER:
1812 case EXTENDED_EXTENDED_IDENTIFY:
1813 case EXTENDED_WDTR:
1814 default:
1815 ADDMSGO(MESSAGE_REJECT);
1816 break;
1817 }
1818 break;
1819 }
1820
1821 MSGILEN=0;
1822 }
1823}
1824
1825static void msgi_end(struct Scsi_Host *shpnt)
1826{
1827 if(MSGILEN>0)
1828 scmd_printk(KERN_WARNING, CURRENT_SC,
1829 "target left before message completed (%d)\n",
1830 MSGILEN);
1831
1832 if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE))
1833 SETPORT(SCSISIG, P_MSGI | SIG_ATNO);
1834}
1835
1836/*
1837 * message out phase
1838 *
1839 */
1840static void msgo_init(struct Scsi_Host *shpnt)
1841{
1842 if(MSGOLEN==0) {
1843 if((CURRENT_SC->SCp.phase & syncneg) && SYNCNEG==2 && SYNCRATE==0) {
1844 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1845 } else {
1846 scmd_printk(KERN_INFO, CURRENT_SC,
1847 "unexpected MESSAGE OUT phase; rejecting\n");
1848 ADDMSGO(MESSAGE_REJECT);
1849 }
1850 }
1851
1852}
1853
1854/*
1855 * message out phase
1856 *
1857 */
1858static void msgo_run(struct Scsi_Host *shpnt)
1859{
1860 while(MSGO_I<MSGOLEN) {
1861 if (TESTLO(SSTAT0, SPIORDY))
1862 return;
1863
1864 if (MSGO_I==MSGOLEN-1) {
1865 /* Leave MESSAGE OUT after transfer */
1866 SETPORT(SSTAT1, CLRATNO);
1867 }
1868
1869
1870 if (MSGO(MSGO_I) & IDENTIFY_BASE)
1871 CURRENT_SC->SCp.phase |= identified;
1872
1873 if (MSGO(MSGO_I)==ABORT)
1874 CURRENT_SC->SCp.phase |= aborted;
1875
1876 if (MSGO(MSGO_I)==BUS_DEVICE_RESET)
1877 CURRENT_SC->SCp.phase |= resetted;
1878
1879 SETPORT(SCSIDAT, MSGO(MSGO_I++));
1880 }
1881}
1882
1883static void msgo_end(struct Scsi_Host *shpnt)
1884{
1885 if(MSGO_I<MSGOLEN) {
1886 scmd_printk(KERN_ERR, CURRENT_SC,
1887 "message sent incompletely (%d/%d)\n",
1888 MSGO_I, MSGOLEN);
1889 if(SYNCNEG==1) {
1890 scmd_printk(KERN_INFO, CURRENT_SC,
1891 "Synchronous Data Transfer Request was rejected\n");
1892 SYNCNEG=2;
1893 }
1894 }
1895
1896 MSGO_I = 0;
1897 MSGOLEN = 0;
1898}
1899
1900/*
1901 * command phase
1902 *
1903 */
1904static void cmd_init(struct Scsi_Host *shpnt)
1905{
1906 if (CURRENT_SC->SCp.sent_command) {
1907 scmd_printk(KERN_ERR, CURRENT_SC,
1908 "command already sent\n");
1909 done(shpnt, DID_ERROR << 16);
1910 return;
1911 }
1912
1913 CMD_I=0;
1914}
1915
1916/*
1917 * command phase
1918 *
1919 */
1920static void cmd_run(struct Scsi_Host *shpnt)
1921{
1922 while(CMD_I<CURRENT_SC->cmd_len) {
1923 if (TESTLO(SSTAT0, SPIORDY))
1924 return;
1925
1926 SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]);
1927 }
1928}
1929
1930static void cmd_end(struct Scsi_Host *shpnt)
1931{
1932 if(CMD_I<CURRENT_SC->cmd_len)
1933 scmd_printk(KERN_ERR, CURRENT_SC,
1934 "command sent incompletely (%d/%d)\n",
1935 CMD_I, CURRENT_SC->cmd_len);
1936 else
1937 CURRENT_SC->SCp.sent_command++;
1938}
1939
1940/*
1941 * status phase
1942 *
1943 */
1944static void status_run(struct Scsi_Host *shpnt)
1945{
1946 if (TESTLO(SSTAT0, SPIORDY))
1947 return;
1948
1949 CURRENT_SC->SCp.Status = GETPORT(SCSIDAT);
1950
1951}
1952
1953/*
1954 * data in phase
1955 *
1956 */
1957static void datai_init(struct Scsi_Host *shpnt)
1958{
1959 SETPORT(DMACNTRL0, RSTFIFO);
1960 SETPORT(DMACNTRL0, RSTFIFO|ENDMA);
1961
1962 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
1963 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
1964
1965 SETPORT(SIMODE0, 0);
1966 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE);
1967
1968 DATA_LEN=0;
1969}
1970
1971static void datai_run(struct Scsi_Host *shpnt)
1972{
1973 unsigned long the_time;
1974 int fifodata, data_count;
1975
1976 /*
1977 * loop while the phase persists or the fifos are not empty
1978 *
1979 */
1980 while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) {
1981 /* FIXME: maybe this should be done by setting up
1982 * STCNT to trigger ENSWRAP interrupt, instead of
1983 * polling for DFIFOFULL
1984 */
1985 the_time=jiffies + 100*HZ;
1986 while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time))
1987 barrier();
1988
1989 if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) {
1990 scmd_printk(KERN_ERR, CURRENT_SC, "datai timeout\n");
1991 break;
1992 }
1993
1994 if(TESTHI(DMASTAT, DFIFOFULL)) {
1995 fifodata = 128;
1996 } else {
1997 the_time=jiffies + 100*HZ;
1998 while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time))
1999 barrier();
2000
2001 if(TESTLO(SSTAT2, SEMPTY)) {
2002 scmd_printk(KERN_ERR, CURRENT_SC,
2003 "datai sempty timeout");
2004 break;
2005 }
2006
2007 fifodata = GETPORT(FIFOSTAT);
2008 }
2009
2010 if(CURRENT_SC->SCp.this_residual>0) {
2011 while(fifodata>0 && CURRENT_SC->SCp.this_residual>0) {
2012 data_count = fifodata > CURRENT_SC->SCp.this_residual ?
2013 CURRENT_SC->SCp.this_residual :
2014 fifodata;
2015 fifodata -= data_count;
2016
2017 if (data_count & 1) {
2018 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2019 *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT);
2020 CURRENT_SC->SCp.this_residual--;
2021 DATA_LEN++;
2022 SETPORT(DMACNTRL0, ENDMA);
2023 }
2024
2025 if (data_count > 1) {
2026 data_count >>= 1;
2027 insw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2028 CURRENT_SC->SCp.ptr += 2 * data_count;
2029 CURRENT_SC->SCp.this_residual -= 2 * data_count;
2030 DATA_LEN += 2 * data_count;
2031 }
2032
2033 if (CURRENT_SC->SCp.this_residual == 0 &&
2034 CURRENT_SC->SCp.buffers_residual > 0) {
2035 /* advance to next buffer */
2036 CURRENT_SC->SCp.buffers_residual--;
2037 CURRENT_SC->SCp.buffer++;
2038 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2039 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2040 }
2041 }
2042 } else if (fifodata > 0) {
2043 scmd_printk(KERN_ERR, CURRENT_SC,
2044 "no buffers left for %d(%d) bytes"
2045 " (data overrun!?)\n",
2046 fifodata, GETPORT(FIFOSTAT));
2047 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2048 while(fifodata>0) {
2049 int data;
2050 data=GETPORT(DATAPORT);
2051 fifodata--;
2052 DATA_LEN++;
2053 }
2054 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2055 }
2056 }
2057
2058 if(TESTLO(DMASTAT, INTSTAT) ||
2059 TESTLO(DMASTAT, DFIFOEMP) ||
2060 TESTLO(SSTAT2, SEMPTY) ||
2061 GETPORT(FIFOSTAT)>0) {
2062 /*
2063 * something went wrong, if there's something left in the fifos
2064 * or the phase didn't change
2065 */
2066 scmd_printk(KERN_ERR, CURRENT_SC,
2067 "fifos should be empty and phase should have changed\n");
2068 }
2069
2070 if(DATA_LEN!=GETSTCNT()) {
2071 scmd_printk(KERN_ERR, CURRENT_SC,
2072 "manual transfer count differs from automatic "
2073 "(count=%d;stcnt=%d;diff=%d;fifostat=%d)",
2074 DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN,
2075 GETPORT(FIFOSTAT));
2076 mdelay(10000);
2077 }
2078}
2079
2080static void datai_end(struct Scsi_Host *shpnt)
2081{
2082 CMD_INC_RESID(CURRENT_SC, -GETSTCNT());
2083
2084 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2085 SETPORT(DMACNTRL0, 0);
2086}
2087
2088/*
2089 * data out phase
2090 *
2091 */
2092static void datao_init(struct Scsi_Host *shpnt)
2093{
2094 SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO);
2095 SETPORT(DMACNTRL0, WRITE_READ | ENDMA);
2096
2097 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2098 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
2099
2100 SETPORT(SIMODE0, 0);
2101 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE );
2102
2103 DATA_LEN = scsi_get_resid(CURRENT_SC);
2104}
2105
2106static void datao_run(struct Scsi_Host *shpnt)
2107{
2108 unsigned long the_time;
2109 int data_count;
2110
2111 /* until phase changes or all data sent */
2112 while(TESTLO(DMASTAT, INTSTAT) && CURRENT_SC->SCp.this_residual>0) {
2113 data_count = 128;
2114 if(data_count > CURRENT_SC->SCp.this_residual)
2115 data_count=CURRENT_SC->SCp.this_residual;
2116
2117 if(TESTLO(DMASTAT, DFIFOEMP)) {
2118 scmd_printk(KERN_ERR, CURRENT_SC,
2119 "datao fifo not empty (%d)",
2120 GETPORT(FIFOSTAT));
2121 break;
2122 }
2123
2124 if(data_count & 1) {
2125 SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT);
2126 SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++);
2127 CURRENT_SC->SCp.this_residual--;
2128 CMD_INC_RESID(CURRENT_SC, -1);
2129 SETPORT(DMACNTRL0,WRITE_READ|ENDMA);
2130 }
2131
2132 if(data_count > 1) {
2133 data_count >>= 1;
2134 outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
2135 CURRENT_SC->SCp.ptr += 2 * data_count;
2136 CURRENT_SC->SCp.this_residual -= 2 * data_count;
2137 CMD_INC_RESID(CURRENT_SC, -2 * data_count);
2138 }
2139
2140 if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
2141 /* advance to next buffer */
2142 CURRENT_SC->SCp.buffers_residual--;
2143 CURRENT_SC->SCp.buffer++;
2144 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer);
2145 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
2146 }
2147
2148 the_time=jiffies + 100*HZ;
2149 while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time))
2150 barrier();
2151
2152 if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) {
2153 scmd_printk(KERN_ERR, CURRENT_SC, "dataout timeout\n");
2154 break;
2155 }
2156 }
2157}
2158
2159static void datao_end(struct Scsi_Host *shpnt)
2160{
2161 if(TESTLO(DMASTAT, DFIFOEMP)) {
2162 int data_count = (DATA_LEN - scsi_get_resid(CURRENT_SC)) -
2163 GETSTCNT();
2164
2165 CMD_INC_RESID(CURRENT_SC, data_count);
2166
2167 data_count -= CURRENT_SC->SCp.ptr -
2168 SG_ADDRESS(CURRENT_SC->SCp.buffer);
2169 while(data_count>0) {
2170 CURRENT_SC->SCp.buffer--;
2171 CURRENT_SC->SCp.buffers_residual++;
2172 data_count -= CURRENT_SC->SCp.buffer->length;
2173 }
2174 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) -
2175 data_count;
2176 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length +
2177 data_count;
2178 }
2179
2180 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
2181 SETPORT(SXFRCTL0, CH1);
2182
2183 SETPORT(DMACNTRL0, 0);
2184}
2185
2186/*
2187 * figure out what state we're in
2188 *
2189 */
2190static int update_state(struct Scsi_Host *shpnt)
2191{
2192 int dataphase=0;
2193 unsigned int stat0 = GETPORT(SSTAT0);
2194 unsigned int stat1 = GETPORT(SSTAT1);
2195
2196 PREVSTATE = STATE;
2197 STATE=unknown;
2198
2199 if(stat1 & SCSIRSTI) {
2200 STATE=rsti;
2201 SETPORT(SCSISEQ,0);
2202 SETPORT(SSTAT1,SCSIRSTI);
2203 } else if (stat0 & SELDI && PREVSTATE == busfree) {
2204 STATE=seldi;
2205 } else if(stat0 & SELDO && CURRENT_SC && (CURRENT_SC->SCp.phase & selecting)) {
2206 STATE=seldo;
2207 } else if(stat1 & SELTO) {
2208 STATE=selto;
2209 } else if(stat1 & BUSFREE) {
2210 STATE=busfree;
2211 SETPORT(SSTAT1,BUSFREE);
2212 } else if(stat1 & SCSIPERR) {
2213 STATE=parerr;
2214 SETPORT(SSTAT1,SCSIPERR);
2215 } else if(stat1 & REQINIT) {
2216 switch(GETPORT(SCSISIG) & P_MASK) {
2217 case P_MSGI: STATE=msgi; break;
2218 case P_MSGO: STATE=msgo; break;
2219 case P_DATAO: STATE=datao; break;
2220 case P_DATAI: STATE=datai; break;
2221 case P_STATUS: STATE=status; break;
2222 case P_CMD: STATE=cmd; break;
2223 }
2224 dataphase=1;
2225 }
2226
2227 if((stat0 & SELDI) && STATE!=seldi && !dataphase) {
2228 scmd_printk(KERN_INFO, CURRENT_SC, "reselection missed?");
2229 }
2230
2231 if(STATE!=PREVSTATE) {
2232 LASTSTATE=PREVSTATE;
2233 }
2234
2235 return dataphase;
2236}
2237
2238/*
2239 * handle parity error
2240 *
2241 * FIXME: in which phase?
2242 *
2243 */
2244static void parerr_run(struct Scsi_Host *shpnt)
2245{
2246 scmd_printk(KERN_ERR, CURRENT_SC, "parity error\n");
2247 done(shpnt, DID_PARITY << 16);
2248}
2249
2250/*
2251 * handle reset in
2252 *
2253 */
2254static void rsti_run(struct Scsi_Host *shpnt)
2255{
2256 Scsi_Cmnd *ptr;
2257
2258 shost_printk(KERN_NOTICE, shpnt, "scsi reset in\n");
2259
2260 ptr=DISCONNECTED_SC;
2261 while(ptr) {
2262 Scsi_Cmnd *next = SCNEXT(ptr);
2263
2264 if (!ptr->device->soft_reset) {
2265 remove_SC(&DISCONNECTED_SC, ptr);
2266
2267 kfree(ptr->host_scribble);
2268 ptr->host_scribble=NULL;
2269
2270 ptr->result = DID_RESET << 16;
2271 ptr->scsi_done(ptr);
2272 }
2273
2274 ptr = next;
2275 }
2276
2277 if(CURRENT_SC && !CURRENT_SC->device->soft_reset)
2278 done(shpnt, DID_RESET << 16 );
2279}
2280
2281
2282/*
2283 * bottom-half handler
2284 *
2285 */
2286static void is_complete(struct Scsi_Host *shpnt)
2287{
2288 int dataphase;
2289 unsigned long flags;
2290 int pending;
2291
2292 if(!shpnt)
2293 return;
2294
2295 DO_LOCK(flags);
2296
2297 if( HOSTDATA(shpnt)->service==0 ) {
2298 DO_UNLOCK(flags);
2299 return;
2300 }
2301
2302 HOSTDATA(shpnt)->service = 0;
2303
2304 if(HOSTDATA(shpnt)->in_intr) {
2305 DO_UNLOCK(flags);
2306 /* aha152x_error never returns.. */
2307 aha152x_error(shpnt, "bottom-half already running!?");
2308 }
2309 HOSTDATA(shpnt)->in_intr++;
2310
2311 /*
2312 * loop while there are interrupt conditions pending
2313 *
2314 */
2315 do {
2316 unsigned long start = jiffies;
2317 DO_UNLOCK(flags);
2318
2319 dataphase=update_state(shpnt);
2320
2321 /*
2322 * end previous state
2323 *
2324 */
2325 if(PREVSTATE!=STATE && states[PREVSTATE].end)
2326 states[PREVSTATE].end(shpnt);
2327
2328 /*
2329 * disable SPIO mode if previous phase used it
2330 * and this one doesn't
2331 *
2332 */
2333 if(states[PREVSTATE].spio && !states[STATE].spio) {
2334 SETPORT(SXFRCTL0, CH1);
2335 SETPORT(DMACNTRL0, 0);
2336 if(CURRENT_SC)
2337 CURRENT_SC->SCp.phase &= ~spiordy;
2338 }
2339
2340 /*
2341 * accept current dataphase phase
2342 *
2343 */
2344 if(dataphase) {
2345 SETPORT(SSTAT0, REQINIT);
2346 SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK);
2347 SETPORT(SSTAT1, PHASECHG);
2348 }
2349
2350 /*
2351 * enable SPIO mode if previous didn't use it
2352 * and this one does
2353 *
2354 */
2355 if(!states[PREVSTATE].spio && states[STATE].spio) {
2356 SETPORT(DMACNTRL0, 0);
2357 SETPORT(SXFRCTL0, CH1|SPIOEN);
2358 if(CURRENT_SC)
2359 CURRENT_SC->SCp.phase |= spiordy;
2360 }
2361
2362 /*
2363 * initialize for new state
2364 *
2365 */
2366 if(PREVSTATE!=STATE && states[STATE].init)
2367 states[STATE].init(shpnt);
2368
2369 /*
2370 * handle current state
2371 *
2372 */
2373 if(states[STATE].run)
2374 states[STATE].run(shpnt);
2375 else
2376 scmd_printk(KERN_ERR, CURRENT_SC,
2377 "unexpected state (%x)\n", STATE);
2378
2379 /*
2380 * setup controller to interrupt on
2381 * the next expected condition and
2382 * loop if it's already there
2383 *
2384 */
2385 DO_LOCK(flags);
2386 pending=setup_expected_interrupts(shpnt);
2387#if defined(AHA152X_STAT)
2388 HOSTDATA(shpnt)->count[STATE]++;
2389 if(PREVSTATE!=STATE)
2390 HOSTDATA(shpnt)->count_trans[STATE]++;
2391 HOSTDATA(shpnt)->time[STATE] += jiffies-start;
2392#endif
2393
2394 } while(pending);
2395
2396 /*
2397 * enable interrupts and leave bottom-half
2398 *
2399 */
2400 HOSTDATA(shpnt)->in_intr--;
2401 SETBITS(DMACNTRL0, INTEN);
2402 DO_UNLOCK(flags);
2403}
2404
2405
2406/*
2407 * Dump the current driver status and panic
2408 */
2409static void aha152x_error(struct Scsi_Host *shpnt, char *msg)
2410{
2411 shost_printk(KERN_EMERG, shpnt, "%s\n", msg);
2412 show_queues(shpnt);
2413 panic("aha152x panic\n");
2414}
2415
2416/*
2417 * display enabled interrupts
2418 */
2419static void disp_enintr(struct Scsi_Host *shpnt)
2420{
2421 int s0, s1;
2422
2423 s0 = GETPORT(SIMODE0);
2424 s1 = GETPORT(SIMODE1);
2425
2426 shost_printk(KERN_DEBUG, shpnt,
2427 "enabled interrupts (%s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n",
2428 (s0 & ENSELDO) ? "ENSELDO " : "",
2429 (s0 & ENSELDI) ? "ENSELDI " : "",
2430 (s0 & ENSELINGO) ? "ENSELINGO " : "",
2431 (s0 & ENSWRAP) ? "ENSWRAP " : "",
2432 (s0 & ENSDONE) ? "ENSDONE " : "",
2433 (s0 & ENSPIORDY) ? "ENSPIORDY " : "",
2434 (s0 & ENDMADONE) ? "ENDMADONE " : "",
2435 (s1 & ENSELTIMO) ? "ENSELTIMO " : "",
2436 (s1 & ENATNTARG) ? "ENATNTARG " : "",
2437 (s1 & ENPHASEMIS) ? "ENPHASEMIS " : "",
2438 (s1 & ENBUSFREE) ? "ENBUSFREE " : "",
2439 (s1 & ENSCSIPERR) ? "ENSCSIPERR " : "",
2440 (s1 & ENPHASECHG) ? "ENPHASECHG " : "",
2441 (s1 & ENREQINIT) ? "ENREQINIT " : "");
2442}
2443
2444/*
2445 * Show the command data of a command
2446 */
2447static void show_command(Scsi_Cmnd *ptr)
2448{
2449 scsi_print_command(ptr);
2450 scmd_printk(KERN_DEBUG, ptr,
2451 "request_bufflen=%d; resid=%d; "
2452 "phase |%s%s%s%s%s%s%s%s%s; next=0x%p",
2453 scsi_bufflen(ptr), scsi_get_resid(ptr),
2454 (ptr->SCp.phase & not_issued) ? "not issued|" : "",
2455 (ptr->SCp.phase & selecting) ? "selecting|" : "",
2456 (ptr->SCp.phase & identified) ? "identified|" : "",
2457 (ptr->SCp.phase & disconnected) ? "disconnected|" : "",
2458 (ptr->SCp.phase & completed) ? "completed|" : "",
2459 (ptr->SCp.phase & spiordy) ? "spiordy|" : "",
2460 (ptr->SCp.phase & syncneg) ? "syncneg|" : "",
2461 (ptr->SCp.phase & aborted) ? "aborted|" : "",
2462 (ptr->SCp.phase & resetted) ? "resetted|" : "",
2463 (SCDATA(ptr)) ? SCNEXT(ptr) : NULL);
2464}
2465
2466/*
2467 * Dump the queued data
2468 */
2469static void show_queues(struct Scsi_Host *shpnt)
2470{
2471 Scsi_Cmnd *ptr;
2472 unsigned long flags;
2473
2474 DO_LOCK(flags);
2475 printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n");
2476 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
2477 show_command(ptr);
2478 DO_UNLOCK(flags);
2479
2480 printk(KERN_DEBUG "current_SC:\n");
2481 if (CURRENT_SC)
2482 show_command(CURRENT_SC);
2483 else
2484 printk(KERN_DEBUG "none\n");
2485
2486 printk(KERN_DEBUG "disconnected_SC:\n");
2487 for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL)
2488 show_command(ptr);
2489
2490 disp_enintr(shpnt);
2491}
2492
2493static void get_command(struct seq_file *m, Scsi_Cmnd * ptr)
2494{
2495 int i;
2496
2497 seq_printf(m, "%p: target=%d; lun=%d; cmnd=( ",
2498 ptr, ptr->device->id, (u8)ptr->device->lun);
2499
2500 for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++)
2501 seq_printf(m, "0x%02x ", ptr->cmnd[i]);
2502
2503 seq_printf(m, "); resid=%d; residual=%d; buffers=%d; phase |",
2504 scsi_get_resid(ptr), ptr->SCp.this_residual,
2505 ptr->SCp.buffers_residual);
2506
2507 if (ptr->SCp.phase & not_issued)
2508 seq_puts(m, "not issued|");
2509 if (ptr->SCp.phase & selecting)
2510 seq_puts(m, "selecting|");
2511 if (ptr->SCp.phase & disconnected)
2512 seq_puts(m, "disconnected|");
2513 if (ptr->SCp.phase & aborted)
2514 seq_puts(m, "aborted|");
2515 if (ptr->SCp.phase & identified)
2516 seq_puts(m, "identified|");
2517 if (ptr->SCp.phase & completed)
2518 seq_puts(m, "completed|");
2519 if (ptr->SCp.phase & spiordy)
2520 seq_puts(m, "spiordy|");
2521 if (ptr->SCp.phase & syncneg)
2522 seq_puts(m, "syncneg|");
2523 seq_printf(m, "; next=0x%p\n", SCNEXT(ptr));
2524}
2525
2526static void get_ports(struct seq_file *m, struct Scsi_Host *shpnt)
2527{
2528 int s;
2529
2530 seq_printf(m, "\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name);
2531
2532 s = GETPORT(SCSISEQ);
2533 seq_puts(m, "SCSISEQ( ");
2534 if (s & TEMODEO)
2535 seq_puts(m, "TARGET MODE ");
2536 if (s & ENSELO)
2537 seq_puts(m, "SELO ");
2538 if (s & ENSELI)
2539 seq_puts(m, "SELI ");
2540 if (s & ENRESELI)
2541 seq_puts(m, "RESELI ");
2542 if (s & ENAUTOATNO)
2543 seq_puts(m, "AUTOATNO ");
2544 if (s & ENAUTOATNI)
2545 seq_puts(m, "AUTOATNI ");
2546 if (s & ENAUTOATNP)
2547 seq_puts(m, "AUTOATNP ");
2548 if (s & SCSIRSTO)
2549 seq_puts(m, "SCSIRSTO ");
2550 seq_puts(m, ");");
2551
2552 seq_puts(m, " SCSISIG(");
2553 s = GETPORT(SCSISIG);
2554 switch (s & P_MASK) {
2555 case P_DATAO:
2556 seq_puts(m, "DATA OUT");
2557 break;
2558 case P_DATAI:
2559 seq_puts(m, "DATA IN");
2560 break;
2561 case P_CMD:
2562 seq_puts(m, "COMMAND");
2563 break;
2564 case P_STATUS:
2565 seq_puts(m, "STATUS");
2566 break;
2567 case P_MSGO:
2568 seq_puts(m, "MESSAGE OUT");
2569 break;
2570 case P_MSGI:
2571 seq_puts(m, "MESSAGE IN");
2572 break;
2573 default:
2574 seq_puts(m, "*invalid*");
2575 break;
2576 }
2577
2578 seq_puts(m, "); ");
2579
2580 seq_printf(m, "INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");
2581
2582 seq_puts(m, "SSTAT( ");
2583 s = GETPORT(SSTAT0);
2584 if (s & TARGET)
2585 seq_puts(m, "TARGET ");
2586 if (s & SELDO)
2587 seq_puts(m, "SELDO ");
2588 if (s & SELDI)
2589 seq_puts(m, "SELDI ");
2590 if (s & SELINGO)
2591 seq_puts(m, "SELINGO ");
2592 if (s & SWRAP)
2593 seq_puts(m, "SWRAP ");
2594 if (s & SDONE)
2595 seq_puts(m, "SDONE ");
2596 if (s & SPIORDY)
2597 seq_puts(m, "SPIORDY ");
2598 if (s & DMADONE)
2599 seq_puts(m, "DMADONE ");
2600
2601 s = GETPORT(SSTAT1);
2602 if (s & SELTO)
2603 seq_puts(m, "SELTO ");
2604 if (s & ATNTARG)
2605 seq_puts(m, "ATNTARG ");
2606 if (s & SCSIRSTI)
2607 seq_puts(m, "SCSIRSTI ");
2608 if (s & PHASEMIS)
2609 seq_puts(m, "PHASEMIS ");
2610 if (s & BUSFREE)
2611 seq_puts(m, "BUSFREE ");
2612 if (s & SCSIPERR)
2613 seq_puts(m, "SCSIPERR ");
2614 if (s & PHASECHG)
2615 seq_puts(m, "PHASECHG ");
2616 if (s & REQINIT)
2617 seq_puts(m, "REQINIT ");
2618 seq_puts(m, "); ");
2619
2620
2621 seq_puts(m, "SSTAT( ");
2622
2623 s = GETPORT(SSTAT0) & GETPORT(SIMODE0);
2624
2625 if (s & TARGET)
2626 seq_puts(m, "TARGET ");
2627 if (s & SELDO)
2628 seq_puts(m, "SELDO ");
2629 if (s & SELDI)
2630 seq_puts(m, "SELDI ");
2631 if (s & SELINGO)
2632 seq_puts(m, "SELINGO ");
2633 if (s & SWRAP)
2634 seq_puts(m, "SWRAP ");
2635 if (s & SDONE)
2636 seq_puts(m, "SDONE ");
2637 if (s & SPIORDY)
2638 seq_puts(m, "SPIORDY ");
2639 if (s & DMADONE)
2640 seq_puts(m, "DMADONE ");
2641
2642 s = GETPORT(SSTAT1) & GETPORT(SIMODE1);
2643
2644 if (s & SELTO)
2645 seq_puts(m, "SELTO ");
2646 if (s & ATNTARG)
2647 seq_puts(m, "ATNTARG ");
2648 if (s & SCSIRSTI)
2649 seq_puts(m, "SCSIRSTI ");
2650 if (s & PHASEMIS)
2651 seq_puts(m, "PHASEMIS ");
2652 if (s & BUSFREE)
2653 seq_puts(m, "BUSFREE ");
2654 if (s & SCSIPERR)
2655 seq_puts(m, "SCSIPERR ");
2656 if (s & PHASECHG)
2657 seq_puts(m, "PHASECHG ");
2658 if (s & REQINIT)
2659 seq_puts(m, "REQINIT ");
2660 seq_puts(m, "); ");
2661
2662 seq_puts(m, "SXFRCTL0( ");
2663
2664 s = GETPORT(SXFRCTL0);
2665 if (s & SCSIEN)
2666 seq_puts(m, "SCSIEN ");
2667 if (s & DMAEN)
2668 seq_puts(m, "DMAEN ");
2669 if (s & CH1)
2670 seq_puts(m, "CH1 ");
2671 if (s & CLRSTCNT)
2672 seq_puts(m, "CLRSTCNT ");
2673 if (s & SPIOEN)
2674 seq_puts(m, "SPIOEN ");
2675 if (s & CLRCH1)
2676 seq_puts(m, "CLRCH1 ");
2677 seq_puts(m, "); ");
2678
2679 seq_puts(m, "SIGNAL( ");
2680
2681 s = GETPORT(SCSISIG);
2682 if (s & SIG_ATNI)
2683 seq_puts(m, "ATNI ");
2684 if (s & SIG_SELI)
2685 seq_puts(m, "SELI ");
2686 if (s & SIG_BSYI)
2687 seq_puts(m, "BSYI ");
2688 if (s & SIG_REQI)
2689 seq_puts(m, "REQI ");
2690 if (s & SIG_ACKI)
2691 seq_puts(m, "ACKI ");
2692 seq_puts(m, "); ");
2693
2694 seq_printf(m, "SELID(%02x), ", GETPORT(SELID));
2695
2696 seq_printf(m, "STCNT(%d), ", GETSTCNT());
2697
2698 seq_puts(m, "SSTAT2( ");
2699
2700 s = GETPORT(SSTAT2);
2701 if (s & SOFFSET)
2702 seq_puts(m, "SOFFSET ");
2703 if (s & SEMPTY)
2704 seq_puts(m, "SEMPTY ");
2705 if (s & SFULL)
2706 seq_puts(m, "SFULL ");
2707 seq_printf(m, "); SFCNT (%d); ", s & (SFULL | SFCNT));
2708
2709 s = GETPORT(SSTAT3);
2710 seq_printf(m, "SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);
2711
2712 seq_puts(m, "SSTAT4( ");
2713 s = GETPORT(SSTAT4);
2714 if (s & SYNCERR)
2715 seq_puts(m, "SYNCERR ");
2716 if (s & FWERR)
2717 seq_puts(m, "FWERR ");
2718 if (s & FRERR)
2719 seq_puts(m, "FRERR ");
2720 seq_puts(m, "); ");
2721
2722 seq_puts(m, "DMACNTRL0( ");
2723 s = GETPORT(DMACNTRL0);
2724 seq_printf(m, "%s ", s & _8BIT ? "8BIT" : "16BIT");
2725 seq_printf(m, "%s ", s & DMA ? "DMA" : "PIO");
2726 seq_printf(m, "%s ", s & WRITE_READ ? "WRITE" : "READ");
2727 if (s & ENDMA)
2728 seq_puts(m, "ENDMA ");
2729 if (s & INTEN)
2730 seq_puts(m, "INTEN ");
2731 if (s & RSTFIFO)
2732 seq_puts(m, "RSTFIFO ");
2733 if (s & SWINT)
2734 seq_puts(m, "SWINT ");
2735 seq_puts(m, "); ");
2736
2737 seq_puts(m, "DMASTAT( ");
2738 s = GETPORT(DMASTAT);
2739 if (s & ATDONE)
2740 seq_puts(m, "ATDONE ");
2741 if (s & WORDRDY)
2742 seq_puts(m, "WORDRDY ");
2743 if (s & DFIFOFULL)
2744 seq_puts(m, "DFIFOFULL ");
2745 if (s & DFIFOEMP)
2746 seq_puts(m, "DFIFOEMP ");
2747 seq_puts(m, ")\n");
2748
2749 seq_puts(m, "enabled interrupts( ");
2750
2751 s = GETPORT(SIMODE0);
2752 if (s & ENSELDO)
2753 seq_puts(m, "ENSELDO ");
2754 if (s & ENSELDI)
2755 seq_puts(m, "ENSELDI ");
2756 if (s & ENSELINGO)
2757 seq_puts(m, "ENSELINGO ");
2758 if (s & ENSWRAP)
2759 seq_puts(m, "ENSWRAP ");
2760 if (s & ENSDONE)
2761 seq_puts(m, "ENSDONE ");
2762 if (s & ENSPIORDY)
2763 seq_puts(m, "ENSPIORDY ");
2764 if (s & ENDMADONE)
2765 seq_puts(m, "ENDMADONE ");
2766
2767 s = GETPORT(SIMODE1);
2768 if (s & ENSELTIMO)
2769 seq_puts(m, "ENSELTIMO ");
2770 if (s & ENATNTARG)
2771 seq_puts(m, "ENATNTARG ");
2772 if (s & ENPHASEMIS)
2773 seq_puts(m, "ENPHASEMIS ");
2774 if (s & ENBUSFREE)
2775 seq_puts(m, "ENBUSFREE ");
2776 if (s & ENSCSIPERR)
2777 seq_puts(m, "ENSCSIPERR ");
2778 if (s & ENPHASECHG)
2779 seq_puts(m, "ENPHASECHG ");
2780 if (s & ENREQINIT)
2781 seq_puts(m, "ENREQINIT ");
2782 seq_puts(m, ")\n");
2783}
2784
2785static int aha152x_set_info(struct Scsi_Host *shpnt, char *buffer, int length)
2786{
2787 if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0)
2788 return -EINVAL;
2789
2790#if defined(AHA152X_STAT)
2791 if(length>13 && strncmp("reset", buffer+8, 5)==0) {
2792 int i;
2793
2794 HOSTDATA(shpnt)->total_commands=0;
2795 HOSTDATA(shpnt)->disconnections=0;
2796 HOSTDATA(shpnt)->busfree_without_any_action=0;
2797 HOSTDATA(shpnt)->busfree_without_old_command=0;
2798 HOSTDATA(shpnt)->busfree_without_new_command=0;
2799 HOSTDATA(shpnt)->busfree_without_done_command=0;
2800 HOSTDATA(shpnt)->busfree_with_check_condition=0;
2801 for (i = idle; i<maxstate; i++) {
2802 HOSTDATA(shpnt)->count[i]=0;
2803 HOSTDATA(shpnt)->count_trans[i]=0;
2804 HOSTDATA(shpnt)->time[i]=0;
2805 }
2806
2807 shost_printk(KERN_INFO, shpnt, "aha152x: stats reset.\n");
2808
2809 } else
2810#endif
2811 {
2812 return -EINVAL;
2813 }
2814
2815
2816 return length;
2817}
2818
2819static int aha152x_show_info(struct seq_file *m, struct Scsi_Host *shpnt)
2820{
2821 int i;
2822 Scsi_Cmnd *ptr;
2823 unsigned long flags;
2824
2825 seq_puts(m, AHA152X_REVID "\n");
2826
2827 seq_printf(m, "ioports 0x%04lx to 0x%04lx\n",
2828 shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1);
2829 seq_printf(m, "interrupt 0x%02x\n", shpnt->irq);
2830 seq_printf(m, "disconnection/reconnection %s\n",
2831 RECONNECT ? "enabled" : "disabled");
2832 seq_printf(m, "parity checking %s\n",
2833 PARITY ? "enabled" : "disabled");
2834 seq_printf(m, "synchronous transfers %s\n",
2835 SYNCHRONOUS ? "enabled" : "disabled");
2836 seq_printf(m, "%d commands currently queued\n", HOSTDATA(shpnt)->commands);
2837
2838 if(SYNCHRONOUS) {
2839 seq_puts(m, "synchronously operating targets (tick=50 ns):\n");
2840 for (i = 0; i < 8; i++)
2841 if (HOSTDATA(shpnt)->syncrate[i] & 0x7f)
2842 seq_printf(m, "target %d: period %dT/%dns; req/ack offset %d\n",
2843 i,
2844 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2),
2845 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50,
2846 HOSTDATA(shpnt)->syncrate[i] & 0x0f);
2847 }
2848 seq_puts(m, "\nqueue status:\n");
2849 DO_LOCK(flags);
2850 if (ISSUE_SC) {
2851 seq_puts(m, "not yet issued commands:\n");
2852 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
2853 get_command(m, ptr);
2854 } else
2855 seq_puts(m, "no not yet issued commands\n");
2856 DO_UNLOCK(flags);
2857
2858 if (CURRENT_SC) {
2859 seq_puts(m, "current command:\n");
2860 get_command(m, CURRENT_SC);
2861 } else
2862 seq_puts(m, "no current command\n");
2863
2864 if (DISCONNECTED_SC) {
2865 seq_puts(m, "disconnected commands:\n");
2866 for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr))
2867 get_command(m, ptr);
2868 } else
2869 seq_puts(m, "no disconnected commands\n");
2870
2871 get_ports(m, shpnt);
2872
2873#if defined(AHA152X_STAT)
2874 seq_printf(m, "statistics:\n"
2875 "total commands: %d\n"
2876 "disconnections: %d\n"
2877 "busfree with check condition: %d\n"
2878 "busfree without old command: %d\n"
2879 "busfree without new command: %d\n"
2880 "busfree without done command: %d\n"
2881 "busfree without any action: %d\n"
2882 "state "
2883 "transitions "
2884 "count "
2885 "time\n",
2886 HOSTDATA(shpnt)->total_commands,
2887 HOSTDATA(shpnt)->disconnections,
2888 HOSTDATA(shpnt)->busfree_with_check_condition,
2889 HOSTDATA(shpnt)->busfree_without_old_command,
2890 HOSTDATA(shpnt)->busfree_without_new_command,
2891 HOSTDATA(shpnt)->busfree_without_done_command,
2892 HOSTDATA(shpnt)->busfree_without_any_action);
2893 for(i=0; i<maxstate; i++) {
2894 seq_printf(m, "%-10s %-12d %-12d %-12ld\n",
2895 states[i].name,
2896 HOSTDATA(shpnt)->count_trans[i],
2897 HOSTDATA(shpnt)->count[i],
2898 HOSTDATA(shpnt)->time[i]);
2899 }
2900#endif
2901 return 0;
2902}
2903
2904static int aha152x_adjust_queue(struct scsi_device *device)
2905{
2906 blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH);
2907 return 0;
2908}
2909
2910static struct scsi_host_template aha152x_driver_template = {
2911 .module = THIS_MODULE,
2912 .name = AHA152X_REVID,
2913 .proc_name = "aha152x",
2914 .show_info = aha152x_show_info,
2915 .write_info = aha152x_set_info,
2916 .queuecommand = aha152x_queue,
2917 .eh_abort_handler = aha152x_abort,
2918 .eh_device_reset_handler = aha152x_device_reset,
2919 .eh_bus_reset_handler = aha152x_bus_reset,
2920 .eh_host_reset_handler = aha152x_host_reset,
2921 .bios_param = aha152x_biosparam,
2922 .can_queue = 1,
2923 .this_id = 7,
2924 .sg_tablesize = SG_ALL,
2925 .use_clustering = DISABLE_CLUSTERING,
2926 .slave_alloc = aha152x_adjust_queue,
2927};
2928
2929#if !defined(PCMCIA)
2930static int setup_count;
2931static struct aha152x_setup setup[2];
2932
2933/* possible i/o addresses for the AIC-6260; default first */
2934static unsigned short ports[] = { 0x340, 0x140 };
2935
2936#if !defined(SKIP_BIOSTEST)
2937/* possible locations for the Adaptec BIOS; defaults first */
2938static unsigned int addresses[] =
2939{
2940 0xdc000, /* default first */
2941 0xc8000,
2942 0xcc000,
2943 0xd0000,
2944 0xd4000,
2945 0xd8000,
2946 0xe0000,
2947 0xeb800, /* VTech Platinum SMP */
2948 0xf0000,
2949};
2950
2951/* signatures for various AIC-6[23]60 based controllers.
2952 The point in detecting signatures is to avoid useless and maybe
2953 harmful probes on ports. I'm not sure that all listed boards pass
2954 auto-configuration. For those which fail the BIOS signature is
2955 obsolete, because user intervention to supply the configuration is
2956 needed anyway. May be an information whether or not the BIOS supports
2957 extended translation could be also useful here. */
2958static struct signature {
2959 unsigned char *signature;
2960 int sig_offset;
2961 int sig_length;
2962} signatures[] =
2963{
2964 { "Adaptec AHA-1520 BIOS", 0x102e, 21 },
2965 /* Adaptec 152x */
2966 { "Adaptec AHA-1520B", 0x000b, 17 },
2967 /* Adaptec 152x rev B */
2968 { "Adaptec AHA-1520B", 0x0026, 17 },
2969 /* Iomega Jaz Jet ISA (AIC6370Q) */
2970 { "Adaptec ASW-B626 BIOS", 0x1029, 21 },
2971 /* on-board controller */
2972 { "Adaptec BIOS: ASW-B626", 0x000f, 22 },
2973 /* on-board controller */
2974 { "Adaptec ASW-B626 S2", 0x2e6c, 19 },
2975 /* on-board controller */
2976 { "Adaptec BIOS:AIC-6360", 0x000c, 21 },
2977 /* on-board controller */
2978 { "ScsiPro SP-360 BIOS", 0x2873, 19 },
2979 /* ScsiPro-Controller */
2980 { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 },
2981 /* Gigabyte Local-Bus-SCSI */
2982 { "Adaptec BIOS:AVA-282X", 0x000c, 21 },
2983 /* Adaptec 282x */
2984 { "Adaptec IBM Dock II SCSI", 0x2edd, 24 },
2985 /* IBM Thinkpad Dock II */
2986 { "Adaptec BIOS:AHA-1532P", 0x001c, 22 },
2987 /* IBM Thinkpad Dock II SCSI */
2988 { "DTC3520A Host Adapter BIOS", 0x318a, 26 },
2989 /* DTC 3520A ISA SCSI */
2990};
2991#endif /* !SKIP_BIOSTEST */
2992
2993/*
2994 * Test, if port_base is valid.
2995 *
2996 */
2997static int aha152x_porttest(int io_port)
2998{
2999 int i;
3000
3001 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */
3002 for (i = 0; i < 16; i++)
3003 SETPORT(io_port + O_STACK, i);
3004
3005 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */
3006 for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++)
3007 ;
3008
3009 return (i == 16);
3010}
3011
3012static int tc1550_porttest(int io_port)
3013{
3014 int i;
3015
3016 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */
3017 for (i = 0; i < 16; i++)
3018 SETPORT(io_port + O_STACK, i);
3019
3020 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */
3021 for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++)
3022 ;
3023
3024 return (i == 16);
3025}
3026
3027
3028static int checksetup(struct aha152x_setup *setup)
3029{
3030 int i;
3031 for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++)
3032 ;
3033
3034 if (i == ARRAY_SIZE(ports))
3035 return 0;
3036
3037 if (!request_region(setup->io_port, IO_RANGE, "aha152x")) {
3038 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port);
3039 return 0;
3040 }
3041
3042 if( aha152x_porttest(setup->io_port) ) {
3043 setup->tc1550=0;
3044 } else if( tc1550_porttest(setup->io_port) ) {
3045 setup->tc1550=1;
3046 } else {
3047 release_region(setup->io_port, IO_RANGE);
3048 return 0;
3049 }
3050
3051 release_region(setup->io_port, IO_RANGE);
3052
3053 if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX))
3054 return 0;
3055
3056 if ((setup->scsiid < 0) || (setup->scsiid > 7))
3057 return 0;
3058
3059 if ((setup->reconnect < 0) || (setup->reconnect > 1))
3060 return 0;
3061
3062 if ((setup->parity < 0) || (setup->parity > 1))
3063 return 0;
3064
3065 if ((setup->synchronous < 0) || (setup->synchronous > 1))
3066 return 0;
3067
3068 if ((setup->ext_trans < 0) || (setup->ext_trans > 1))
3069 return 0;
3070
3071
3072 return 1;
3073}
3074
3075
3076static int __init aha152x_init(void)
3077{
3078 int i, j, ok;
3079#if defined(AUTOCONF)
3080 aha152x_config conf;
3081#endif
3082#ifdef __ISAPNP__
3083 struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL};
3084#endif
3085
3086 if ( setup_count ) {
3087 printk(KERN_INFO "aha152x: processing commandline: ");
3088
3089 for (i = 0; i<setup_count; i++) {
3090 if (!checksetup(&setup[i])) {
3091 printk(KERN_ERR "\naha152x: %s\n", setup[i].conf);
3092 printk(KERN_ERR "aha152x: invalid line\n");
3093 }
3094 }
3095 printk("ok\n");
3096 }
3097
3098#if defined(SETUP0)
3099 if (setup_count < ARRAY_SIZE(setup)) {
3100 struct aha152x_setup override = SETUP0;
3101
3102 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3103 if (!checksetup(&override)) {
3104 printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3105 override.io_port,
3106 override.irq,
3107 override.scsiid,
3108 override.reconnect,
3109 override.parity,
3110 override.synchronous,
3111 override.delay,
3112 override.ext_trans);
3113 } else
3114 setup[setup_count++] = override;
3115 }
3116 }
3117#endif
3118
3119#if defined(SETUP1)
3120 if (setup_count < ARRAY_SIZE(setup)) {
3121 struct aha152x_setup override = SETUP1;
3122
3123 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3124 if (!checksetup(&override)) {
3125 printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3126 override.io_port,
3127 override.irq,
3128 override.scsiid,
3129 override.reconnect,
3130 override.parity,
3131 override.synchronous,
3132 override.delay,
3133 override.ext_trans);
3134 } else
3135 setup[setup_count++] = override;
3136 }
3137 }
3138#endif
3139
3140#if defined(MODULE)
3141 if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) {
3142 if(aha152x[0]!=0) {
3143 setup[setup_count].conf = "";
3144 setup[setup_count].io_port = aha152x[0];
3145 setup[setup_count].irq = aha152x[1];
3146 setup[setup_count].scsiid = aha152x[2];
3147 setup[setup_count].reconnect = aha152x[3];
3148 setup[setup_count].parity = aha152x[4];
3149 setup[setup_count].synchronous = aha152x[5];
3150 setup[setup_count].delay = aha152x[6];
3151 setup[setup_count].ext_trans = aha152x[7];
3152 } else if (io[0] != 0 || irq[0] != 0) {
3153 if(io[0]!=0) setup[setup_count].io_port = io[0];
3154 if(irq[0]!=0) setup[setup_count].irq = irq[0];
3155
3156 setup[setup_count].scsiid = scsiid[0];
3157 setup[setup_count].reconnect = reconnect[0];
3158 setup[setup_count].parity = parity[0];
3159 setup[setup_count].synchronous = sync[0];
3160 setup[setup_count].delay = delay[0];
3161 setup[setup_count].ext_trans = exttrans[0];
3162 }
3163
3164 if (checksetup(&setup[setup_count]))
3165 setup_count++;
3166 else
3167 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",
3168 setup[setup_count].io_port,
3169 setup[setup_count].irq,
3170 setup[setup_count].scsiid,
3171 setup[setup_count].reconnect,
3172 setup[setup_count].parity,
3173 setup[setup_count].synchronous,
3174 setup[setup_count].delay,
3175 setup[setup_count].ext_trans);
3176 }
3177
3178 if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) {
3179 if(aha152x1[0]!=0) {
3180 setup[setup_count].conf = "";
3181 setup[setup_count].io_port = aha152x1[0];
3182 setup[setup_count].irq = aha152x1[1];
3183 setup[setup_count].scsiid = aha152x1[2];
3184 setup[setup_count].reconnect = aha152x1[3];
3185 setup[setup_count].parity = aha152x1[4];
3186 setup[setup_count].synchronous = aha152x1[5];
3187 setup[setup_count].delay = aha152x1[6];
3188 setup[setup_count].ext_trans = aha152x1[7];
3189 } else if (io[1] != 0 || irq[1] != 0) {
3190 if(io[1]!=0) setup[setup_count].io_port = io[1];
3191 if(irq[1]!=0) setup[setup_count].irq = irq[1];
3192
3193 setup[setup_count].scsiid = scsiid[1];
3194 setup[setup_count].reconnect = reconnect[1];
3195 setup[setup_count].parity = parity[1];
3196 setup[setup_count].synchronous = sync[1];
3197 setup[setup_count].delay = delay[1];
3198 setup[setup_count].ext_trans = exttrans[1];
3199 }
3200 if (checksetup(&setup[setup_count]))
3201 setup_count++;
3202 else
3203 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",
3204 setup[setup_count].io_port,
3205 setup[setup_count].irq,
3206 setup[setup_count].scsiid,
3207 setup[setup_count].reconnect,
3208 setup[setup_count].parity,
3209 setup[setup_count].synchronous,
3210 setup[setup_count].delay,
3211 setup[setup_count].ext_trans);
3212 }
3213#endif
3214
3215#ifdef __ISAPNP__
3216 for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) {
3217 while ( setup_count<ARRAY_SIZE(setup) &&
3218 (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) {
3219 if (pnp_device_attach(dev) < 0)
3220 continue;
3221
3222 if (pnp_activate_dev(dev) < 0) {
3223 pnp_device_detach(dev);
3224 continue;
3225 }
3226
3227 if (!pnp_port_valid(dev, 0)) {
3228 pnp_device_detach(dev);
3229 continue;
3230 }
3231
3232 if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) {
3233 pnp_device_detach(dev);
3234 continue;
3235 }
3236
3237 setup[setup_count].io_port = pnp_port_start(dev, 0);
3238 setup[setup_count].irq = pnp_irq(dev, 0);
3239 setup[setup_count].scsiid = 7;
3240 setup[setup_count].reconnect = 1;
3241 setup[setup_count].parity = 1;
3242 setup[setup_count].synchronous = 1;
3243 setup[setup_count].delay = DELAY_DEFAULT;
3244 setup[setup_count].ext_trans = 0;
3245#if defined(__ISAPNP__)
3246 pnpdev[setup_count] = dev;
3247#endif
3248 printk (KERN_INFO
3249 "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n",
3250 setup[setup_count].io_port, setup[setup_count].irq);
3251 setup_count++;
3252 }
3253 }
3254#endif
3255
3256#if defined(AUTOCONF)
3257 if (setup_count<ARRAY_SIZE(setup)) {
3258#if !defined(SKIP_BIOSTEST)
3259 ok = 0;
3260 for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) {
3261 void __iomem *p = ioremap(addresses[i], 0x4000);
3262 if (!p)
3263 continue;
3264 for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++)
3265 ok = check_signature(p + signatures[j].sig_offset,
3266 signatures[j].signature, signatures[j].sig_length);
3267 iounmap(p);
3268 }
3269 if (!ok && setup_count == 0)
3270 return -ENODEV;
3271
3272 printk(KERN_INFO "aha152x: BIOS test: passed, ");
3273#else
3274 printk(KERN_INFO "aha152x: ");
3275#endif /* !SKIP_BIOSTEST */
3276
3277 ok = 0;
3278 for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) {
3279 if ((setup_count == 1) && (setup[0].io_port == ports[i]))
3280 continue;
3281
3282 if (!request_region(ports[i], IO_RANGE, "aha152x")) {
3283 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]);
3284 continue;
3285 }
3286
3287 if (aha152x_porttest(ports[i])) {
3288 setup[setup_count].tc1550 = 0;
3289
3290 conf.cf_port =
3291 (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB);
3292 } else if (tc1550_porttest(ports[i])) {
3293 setup[setup_count].tc1550 = 1;
3294
3295 conf.cf_port =
3296 (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB);
3297 } else {
3298 release_region(ports[i], IO_RANGE);
3299 continue;
3300 }
3301
3302 release_region(ports[i], IO_RANGE);
3303
3304 ok++;
3305 setup[setup_count].io_port = ports[i];
3306 setup[setup_count].irq = IRQ_MIN + conf.cf_irq;
3307 setup[setup_count].scsiid = conf.cf_id;
3308 setup[setup_count].reconnect = conf.cf_tardisc;
3309 setup[setup_count].parity = !conf.cf_parity;
3310 setup[setup_count].synchronous = conf.cf_syncneg;
3311 setup[setup_count].delay = DELAY_DEFAULT;
3312 setup[setup_count].ext_trans = 0;
3313 setup_count++;
3314
3315 }
3316
3317 if (ok)
3318 printk("auto configuration: ok, ");
3319 }
3320#endif
3321
3322 printk("%d controller(s) configured\n", setup_count);
3323
3324 for (i=0; i<setup_count; i++) {
3325 if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) {
3326 struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]);
3327
3328 if( !shpnt ) {
3329 release_region(setup[i].io_port, IO_RANGE);
3330#if defined(__ISAPNP__)
3331 } else if( pnpdev[i] ) {
3332 HOSTDATA(shpnt)->pnpdev=pnpdev[i];
3333 pnpdev[i]=NULL;
3334#endif
3335 }
3336 } else {
3337 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port);
3338 }
3339
3340#if defined(__ISAPNP__)
3341 if( pnpdev[i] )
3342 pnp_device_detach(pnpdev[i]);
3343#endif
3344 }
3345
3346 return 0;
3347}
3348
3349static void __exit aha152x_exit(void)
3350{
3351 struct aha152x_hostdata *hd, *tmp;
3352
3353 list_for_each_entry_safe(hd, tmp, &aha152x_host_list, host_list) {
3354 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
3355
3356 aha152x_release(shost);
3357 }
3358}
3359
3360module_init(aha152x_init);
3361module_exit(aha152x_exit);
3362
3363#if !defined(MODULE)
3364static int __init aha152x_setup(char *str)
3365{
3366 int ints[10];
3367
3368 get_options(str, ARRAY_SIZE(ints), ints);
3369
3370 if(setup_count>=ARRAY_SIZE(setup)) {
3371 printk(KERN_ERR "aha152x: you can only configure up to two controllers\n");
3372 return 1;
3373 }
3374
3375 setup[setup_count].conf = str;
3376 setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340;
3377 setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11;
3378 setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7;
3379 setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1;
3380 setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1;
3381 setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1;
3382 setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT;
3383 setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0;
3384 if (ints[0] > 8) { /*}*/
3385 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
3386 "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n");
3387 } else {
3388 setup_count++;
3389 return 0;
3390 }
3391
3392 return 1;
3393}
3394__setup("aha152x=", aha152x_setup);
3395#endif
3396
3397#endif /* !PCMCIA */