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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// SPDX-License-Identifier: GPL-2.0-or-later
2/* aha152x.c -- Adaptec AHA-152x driver
3 * Author: Jürgen E. Fischer, fischer@norbit.de
4 * Copyright 1993-2004 Jürgen E. Fischer
5 *
6 * $Id: aha152x.c,v 2.7 2004/01/24 11:42:59 fischer Exp $
7 *
8 * $Log: aha152x.c,v $
9 * Revision 2.7 2004/01/24 11:42:59 fischer
10 * - gather code that is not used by PCMCIA at the end
11 * - move request_region for !PCMCIA case to detection
12 * - migration to new scsi host api (remove legacy code)
13 * - free host scribble before scsi_done
14 * - fix error handling
15 * - one isapnp device added to id_table
16 *
17 * Revision 2.6 2003/10/30 20:52:47 fischer
18 * - interfaces changes for kernel 2.6
19 * - aha152x_probe_one introduced for pcmcia stub
20 * - fixed pnpdev handling
21 * - instead of allocation a new one, reuse command for request sense after check condition and reset
22 * - fixes race in is_complete
23 *
24 * Revision 2.5 2002/04/14 11:24:53 fischer
25 * - isapnp support
26 * - abort fixed
27 * - 2.5 support
28 *
29 * Revision 2.4 2000/12/16 12:53:56 fischer
30 * - allow REQUEST SENSE to be queued
31 * - handle shared PCI interrupts
32 *
33 * Revision 2.3 2000/11/04 16:40:26 fischer
34 * - handle data overruns
35 * - extend timeout for data phases
36 *
37 * Revision 2.2 2000/08/08 19:54:53 fischer
38 * - minor changes
39 *
40 * Revision 2.1 2000/05/17 16:23:17 fischer
41 * - signature update
42 * - fix for data out w/o scatter gather
43 *
44 * Revision 2.0 1999/12/25 15:07:32 fischer
45 * - interrupt routine completly reworked
46 * - basic support for new eh code
47 *
48 * Revision 1.21 1999/11/10 23:46:36 fischer
49 * - default to synchronous operation
50 * - synchronous negotiation fixed
51 * - added timeout to loops
52 * - debugging output can be controlled through procfs
53 *
54 * Revision 1.20 1999/11/07 18:37:31 fischer
55 * - synchronous operation works
56 * - resid support for sg driver
57 *
58 * Revision 1.19 1999/11/02 22:39:59 fischer
59 * - moved leading comments to README.aha152x
60 * - new additional module parameters
61 * - updates for 2.3
62 * - support for the Tripace TC1550 controller
63 * - interrupt handling changed
64 *
65 * Revision 1.18 1996/09/07 20:10:40 fischer
66 * - fixed can_queue handling (multiple outstanding commands working again)
67 *
68 * Revision 1.17 1996/08/17 16:05:14 fischer
69 * - biosparam improved
70 * - interrupt verification
71 * - updated documentation
72 * - cleanups
73 *
74 * Revision 1.16 1996/06/09 00:04:56 root
75 * - added configuration symbols for insmod (aha152x/aha152x1)
76 *
77 * Revision 1.15 1996/04/30 14:52:06 fischer
78 * - proc info fixed
79 * - support for extended translation for >1GB disks
80 *
81 * Revision 1.14 1996/01/17 15:11:20 fischer
82 * - fixed lockup in MESSAGE IN phase after reconnection
83 *
84 * Revision 1.13 1996/01/09 02:15:53 fischer
85 * - some cleanups
86 * - moved request_irq behind controller initialization
87 * (to avoid spurious interrupts)
88 *
89 * Revision 1.12 1995/12/16 12:26:07 fischer
90 * - barrier()s added
91 * - configurable RESET delay added
92 *
93 * Revision 1.11 1995/12/06 21:18:35 fischer
94 * - some minor updates
95 *
96 * Revision 1.10 1995/07/22 19:18:45 fischer
97 * - support for 2 controllers
98 * - started synchronous data transfers (not working yet)
99 *
100 * Revision 1.9 1995/03/18 09:20:24 root
101 * - patches for PCMCIA and modules
102 *
103 * Revision 1.8 1995/01/21 22:07:19 root
104 * - snarf_region => request_region
105 * - aha152x_intr interface change
106 *
107 * Revision 1.7 1995/01/02 23:19:36 root
108 * - updated COMMAND_SIZE to cmd_len
109 * - changed sti() to restore_flags()
110 * - fixed some #ifdef which generated warnings
111 *
112 * Revision 1.6 1994/11/24 20:35:27 root
113 * - problem with odd number of bytes in fifo fixed
114 *
115 * Revision 1.5 1994/10/30 14:39:56 root
116 * - abort code fixed
117 * - debugging improved
118 *
119 * Revision 1.4 1994/09/12 11:33:01 root
120 * - irqaction to request_irq
121 * - abortion updated
122 *
123 * Revision 1.3 1994/08/04 13:53:05 root
124 * - updates for mid-level-driver changes
125 * - accept unexpected BUSFREE phase as error condition
126 * - parity check now configurable
127 *
128 * Revision 1.2 1994/07/03 12:56:36 root
129 * - cleaned up debugging code
130 * - more tweaking on reset delays
131 * - updated abort/reset code (pretty untested...)
132 *
133 * Revision 1.1 1994/05/28 21:18:49 root
134 * - update for mid-level interface change (abort-reset)
135 * - delays after resets adjusted for some slow devices
136 *
137 * Revision 1.0 1994/03/25 12:52:00 root
138 * - Fixed "more data than expected" problem
139 * - added new BIOS signatures
140 *
141 * Revision 0.102 1994/01/31 20:44:12 root
142 * - minor changes in insw/outsw handling
143 *
144 * Revision 0.101 1993/12/13 01:16:27 root
145 * - fixed STATUS phase (non-GOOD stati were dropped sometimes;
146 * fixes problems with CD-ROM sector size detection & media change)
147 *
148 * Revision 0.100 1993/12/10 16:58:47 root
149 * - fix for unsuccessful selections in case of non-continuous id assignments
150 * on the scsi bus.
151 *
152 * Revision 0.99 1993/10/24 16:19:59 root
153 * - fixed DATA IN (rare read errors gone)
154 *
155 * Revision 0.98 1993/10/17 12:54:44 root
156 * - fixed some recent fixes (shame on me)
157 * - moved initialization of scratch area to aha152x_queue
158 *
159 * Revision 0.97 1993/10/09 18:53:53 root
160 * - DATA IN fixed. Rarely left data in the fifo.
161 *
162 * Revision 0.96 1993/10/03 00:53:59 root
163 * - minor changes on DATA IN
164 *
165 * Revision 0.95 1993/09/24 10:36:01 root
166 * - change handling of MSGI after reselection
167 * - fixed sti/cli
168 * - minor changes
169 *
170 * Revision 0.94 1993/09/18 14:08:22 root
171 * - fixed bug in multiple outstanding command code
172 * - changed detection
173 * - support for kernel command line configuration
174 * - reset corrected
175 * - changed message handling
176 *
177 * Revision 0.93 1993/09/15 20:41:19 root
178 * - fixed bugs with multiple outstanding commands
179 *
180 * Revision 0.92 1993/09/13 02:46:33 root
181 * - multiple outstanding commands work (no problems with IBM drive)
182 *
183 * Revision 0.91 1993/09/12 20:51:46 root
184 * added multiple outstanding commands
185 * (some problem with this $%&? IBM device remain)
186 *
187 * Revision 0.9 1993/09/12 11:11:22 root
188 * - corrected auto-configuration
189 * - changed the auto-configuration (added some '#define's)
190 * - added support for dis-/reconnection
191 *
192 * Revision 0.8 1993/09/06 23:09:39 root
193 * - added support for the drive activity light
194 * - minor changes
195 *
196 * Revision 0.7 1993/09/05 14:30:15 root
197 * - improved phase detection
198 * - now using the new snarf_region code of 0.99pl13
199 *
200 * Revision 0.6 1993/09/02 11:01:38 root
201 * first public release; added some signatures and biosparam()
202 *
203 * Revision 0.5 1993/08/30 10:23:30 root
204 * fixed timing problems with my IBM drive
205 *
206 * Revision 0.4 1993/08/29 14:06:52 root
207 * fixed some problems with timeouts due incomplete commands
208 *
209 * Revision 0.3 1993/08/28 15:55:03 root
210 * writing data works too. mounted and worked on a dos partition
211 *
212 * Revision 0.2 1993/08/27 22:42:07 root
213 * reading data works. Mounted a msdos partition.
214 *
215 * Revision 0.1 1993/08/25 13:38:30 root
216 * first "damn thing doesn't work" version
217 *
218 * Revision 0.0 1993/08/14 19:54:25 root
219 * empty function bodies; detect() works.
220 *
221 **************************************************************************
222
223 see Documentation/scsi/aha152x.rst for configuration details
224
225 **************************************************************************/
226
227#include <linux/module.h>
228#include <asm/irq.h>
229#include <linux/io.h>
230#include <linux/blkdev.h>
231#include <linux/completion.h>
232#include <linux/errno.h>
233#include <linux/string.h>
234#include <linux/wait.h>
235#include <linux/ioport.h>
236#include <linux/delay.h>
237#include <linux/proc_fs.h>
238#include <linux/interrupt.h>
239#include <linux/init.h>
240#include <linux/kernel.h>
241#include <linux/isapnp.h>
242#include <linux/spinlock.h>
243#include <linux/workqueue.h>
244#include <linux/list.h>
245#include <linux/slab.h>
246
247#include <scsi/scsi.h>
248#include <scsi/scsi_cmnd.h>
249#include <scsi/scsi_dbg.h>
250#include <scsi/scsi_device.h>
251#include <scsi/scsi_eh.h>
252#include <scsi/scsi_host.h>
253#include <scsi/scsi_tcq.h>
254#include <scsi/scsi_transport_spi.h>
255#include <scsi/scsicam.h>
256#include "aha152x.h"
257
258static LIST_HEAD(aha152x_host_list);
259
260
261/* DEFINES */
262
263/* For PCMCIA cards, always use AUTOCONF */
264#if defined(AHA152X_PCMCIA) || defined(MODULE)
265#if !defined(AUTOCONF)
266#define AUTOCONF
267#endif
268#endif
269
270#if !defined(AUTOCONF) && !defined(SETUP0)
271#error define AUTOCONF or SETUP0
272#endif
273
274#define DO_LOCK(flags) spin_lock_irqsave(&QLOCK,flags)
275#define DO_UNLOCK(flags) spin_unlock_irqrestore(&QLOCK,flags)
276
277#define LEAD "(scsi%d:%d:%d) "
278#define INFO_LEAD KERN_INFO LEAD
279#define CMDINFO(cmd) \
280 (cmd) ? ((cmd)->device->host->host_no) : -1, \
281 (cmd) ? ((cmd)->device->id & 0x0f) : -1, \
282 (cmd) ? ((u8)(cmd)->device->lun & 0x07) : -1
283
284static inline void
285CMD_INC_RESID(struct scsi_cmnd *cmd, int inc)
286{
287 scsi_set_resid(cmd, scsi_get_resid(cmd) + inc);
288}
289
290#define DELAY_DEFAULT 1000
291
292#if defined(AHA152X_PCMCIA)
293#define IRQ_MIN 0
294#define IRQ_MAX 16
295#else
296#define IRQ_MIN 9
297#if defined(__PPC)
298#define IRQ_MAX (irq_get_nr_irqs()-1)
299#else
300#define IRQ_MAX 12
301#endif
302#endif
303
304enum {
305 not_issued = 0x0001, /* command not yet issued */
306 selecting = 0x0002, /* target is being selected */
307 identified = 0x0004, /* IDENTIFY was sent */
308 disconnected = 0x0008, /* target disconnected */
309 completed = 0x0010, /* target sent COMMAND COMPLETE */
310 aborted = 0x0020, /* ABORT was sent */
311 resetted = 0x0040, /* BUS DEVICE RESET was sent */
312 spiordy = 0x0080, /* waiting for SPIORDY to raise */
313 syncneg = 0x0100, /* synchronous negotiation in progress */
314 aborting = 0x0200, /* ABORT is pending */
315 resetting = 0x0400, /* BUS DEVICE RESET is pending */
316 check_condition = 0x0800, /* requesting sense after CHECK CONDITION */
317};
318
319struct aha152x_cmd_priv {
320 char *ptr;
321 int this_residual;
322 struct scatterlist *buffer;
323 int status;
324 int message;
325 int sent_command;
326 int phase;
327};
328
329static struct aha152x_cmd_priv *aha152x_priv(struct scsi_cmnd *cmd)
330{
331 return scsi_cmd_priv(cmd);
332}
333
334MODULE_AUTHOR("Jürgen Fischer");
335MODULE_DESCRIPTION(AHA152X_REVID);
336MODULE_LICENSE("GPL");
337
338#if !defined(AHA152X_PCMCIA)
339#if defined(MODULE)
340static int io[] = {0, 0};
341module_param_hw_array(io, int, ioport, NULL, 0);
342MODULE_PARM_DESC(io,"base io address of controller");
343
344static int irq[] = {0, 0};
345module_param_hw_array(irq, int, irq, NULL, 0);
346MODULE_PARM_DESC(irq,"interrupt for controller");
347
348static int scsiid[] = {7, 7};
349module_param_array(scsiid, int, NULL, 0);
350MODULE_PARM_DESC(scsiid,"scsi id of controller");
351
352static int reconnect[] = {1, 1};
353module_param_array(reconnect, int, NULL, 0);
354MODULE_PARM_DESC(reconnect,"allow targets to disconnect");
355
356static int parity[] = {1, 1};
357module_param_array(parity, int, NULL, 0);
358MODULE_PARM_DESC(parity,"use scsi parity");
359
360static int sync[] = {1, 1};
361module_param_array(sync, int, NULL, 0);
362MODULE_PARM_DESC(sync,"use synchronous transfers");
363
364static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT};
365module_param_array(delay, int, NULL, 0);
366MODULE_PARM_DESC(delay,"scsi reset delay");
367
368static int exttrans[] = {0, 0};
369module_param_array(exttrans, int, NULL, 0);
370MODULE_PARM_DESC(exttrans,"use extended translation");
371
372static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
373module_param_array(aha152x, int, NULL, 0);
374MODULE_PARM_DESC(aha152x, "parameters for first controller");
375
376static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
377module_param_array(aha152x1, int, NULL, 0);
378MODULE_PARM_DESC(aha152x1, "parameters for second controller");
379#endif /* MODULE */
380
381#ifdef __ISAPNP__
382static struct isapnp_device_id id_table[] = {
383 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1502), 0 },
384 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1505), 0 },
385 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1510), 0 },
386 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1515), 0 },
387 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1520), 0 },
388 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2015), 0 },
389 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1522), 0 },
390 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2215), 0 },
391 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1530), 0 },
392 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3015), 0 },
393 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1532), 0 },
394 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3215), 0 },
395 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x6360), 0 },
396 { ISAPNP_DEVICE_SINGLE_END, }
397};
398MODULE_DEVICE_TABLE(isapnp, id_table);
399#endif /* ISAPNP */
400
401#endif /* !AHA152X_PCMCIA */
402
403static const struct scsi_host_template aha152x_driver_template;
404
405/*
406 * internal states of the host
407 *
408 */
409enum aha152x_state {
410 idle=0,
411 unknown,
412 seldo,
413 seldi,
414 selto,
415 busfree,
416 msgo,
417 cmd,
418 msgi,
419 status,
420 datai,
421 datao,
422 parerr,
423 rsti,
424 maxstate
425};
426
427/*
428 * current state information of the host
429 *
430 */
431struct aha152x_hostdata {
432 struct scsi_cmnd *issue_SC;
433 /* pending commands to issue */
434
435 struct scsi_cmnd *current_SC;
436 /* current command on the bus */
437
438 struct scsi_cmnd *disconnected_SC;
439 /* commands that disconnected */
440
441 struct scsi_cmnd *done_SC;
442 /* command that was completed */
443
444 spinlock_t lock;
445 /* host lock */
446
447#if defined(AHA152X_STAT)
448 int total_commands;
449 int disconnections;
450 int busfree_without_any_action;
451 int busfree_without_old_command;
452 int busfree_without_new_command;
453 int busfree_without_done_command;
454 int busfree_with_check_condition;
455 int count[maxstate];
456 int count_trans[maxstate];
457 unsigned long time[maxstate];
458#endif
459
460 int commands; /* current number of commands */
461
462 int reconnect; /* disconnection allowed */
463 int parity; /* parity checking enabled */
464 int synchronous; /* synchronous transferes enabled */
465 int delay; /* reset out delay */
466 int ext_trans; /* extended translation enabled */
467
468 int swint; /* software-interrupt was fired during detect() */
469 int service; /* bh needs to be run */
470 int in_intr; /* bh is running */
471
472 /* current state,
473 previous state,
474 last state different from current state */
475 enum aha152x_state state, prevstate, laststate;
476
477 int target;
478 /* reconnecting target */
479
480 unsigned char syncrate[8];
481 /* current synchronous transfer agreements */
482
483 unsigned char syncneg[8];
484 /* 0: no negotiation;
485 * 1: negotiation in progress;
486 * 2: negotiation completed
487 */
488
489 int cmd_i;
490 /* number of sent bytes of current command */
491
492 int msgi_len;
493 /* number of received message bytes */
494 unsigned char msgi[256];
495 /* received message bytes */
496
497 int msgo_i, msgo_len;
498 /* number of sent bytes and length of current messages */
499 unsigned char msgo[256];
500 /* pending messages */
501
502 int data_len;
503 /* number of sent/received bytes in dataphase */
504
505 unsigned long io_port0;
506 unsigned long io_port1;
507
508#ifdef __ISAPNP__
509 struct pnp_dev *pnpdev;
510#endif
511 struct list_head host_list;
512};
513
514
515/*
516 * host specific command extension
517 *
518 */
519struct aha152x_scdata {
520 struct scsi_cmnd *next; /* next sc in queue */
521 struct completion *done;/* semaphore to block on */
522 struct scsi_eh_save ses;
523};
524
525/* access macros for hostdata */
526
527#define HOSTDATA(shpnt) ((struct aha152x_hostdata *) &shpnt->hostdata)
528
529#define HOSTNO ((shpnt)->host_no)
530
531#define CURRENT_SC (HOSTDATA(shpnt)->current_SC)
532#define DONE_SC (HOSTDATA(shpnt)->done_SC)
533#define ISSUE_SC (HOSTDATA(shpnt)->issue_SC)
534#define DISCONNECTED_SC (HOSTDATA(shpnt)->disconnected_SC)
535#define QLOCK (HOSTDATA(shpnt)->lock)
536#define QLOCKER (HOSTDATA(shpnt)->locker)
537#define QLOCKERL (HOSTDATA(shpnt)->lockerl)
538
539#define STATE (HOSTDATA(shpnt)->state)
540#define PREVSTATE (HOSTDATA(shpnt)->prevstate)
541#define LASTSTATE (HOSTDATA(shpnt)->laststate)
542
543#define RECONN_TARGET (HOSTDATA(shpnt)->target)
544
545#define CMD_I (HOSTDATA(shpnt)->cmd_i)
546
547#define MSGO(i) (HOSTDATA(shpnt)->msgo[i])
548#define MSGO_I (HOSTDATA(shpnt)->msgo_i)
549#define MSGOLEN (HOSTDATA(shpnt)->msgo_len)
550#define ADDMSGO(x) (MSGOLEN<256 ? (void)(MSGO(MSGOLEN++)=x) : aha152x_error(shpnt,"MSGO overflow"))
551
552#define MSGI(i) (HOSTDATA(shpnt)->msgi[i])
553#define MSGILEN (HOSTDATA(shpnt)->msgi_len)
554#define ADDMSGI(x) (MSGILEN<256 ? (void)(MSGI(MSGILEN++)=x) : aha152x_error(shpnt,"MSGI overflow"))
555
556#define DATA_LEN (HOSTDATA(shpnt)->data_len)
557
558#define SYNCRATE (HOSTDATA(shpnt)->syncrate[CURRENT_SC->device->id])
559#define SYNCNEG (HOSTDATA(shpnt)->syncneg[CURRENT_SC->device->id])
560
561#define DELAY (HOSTDATA(shpnt)->delay)
562#define EXT_TRANS (HOSTDATA(shpnt)->ext_trans)
563#define TC1550 (HOSTDATA(shpnt)->tc1550)
564#define RECONNECT (HOSTDATA(shpnt)->reconnect)
565#define PARITY (HOSTDATA(shpnt)->parity)
566#define SYNCHRONOUS (HOSTDATA(shpnt)->synchronous)
567
568#define HOSTIOPORT0 (HOSTDATA(shpnt)->io_port0)
569#define HOSTIOPORT1 (HOSTDATA(shpnt)->io_port1)
570
571#define SCDATA(SCpnt) ((struct aha152x_scdata *) (SCpnt)->host_scribble)
572#define SCNEXT(SCpnt) SCDATA(SCpnt)->next
573#define SCSEM(SCpnt) SCDATA(SCpnt)->done
574
575#define SG_ADDRESS(buffer) ((char *) sg_virt((buffer)))
576
577/* state handling */
578static void seldi_run(struct Scsi_Host *shpnt);
579static void seldo_run(struct Scsi_Host *shpnt);
580static void selto_run(struct Scsi_Host *shpnt);
581static void busfree_run(struct Scsi_Host *shpnt);
582
583static void msgo_init(struct Scsi_Host *shpnt);
584static void msgo_run(struct Scsi_Host *shpnt);
585static void msgo_end(struct Scsi_Host *shpnt);
586
587static void cmd_init(struct Scsi_Host *shpnt);
588static void cmd_run(struct Scsi_Host *shpnt);
589static void cmd_end(struct Scsi_Host *shpnt);
590
591static void datai_init(struct Scsi_Host *shpnt);
592static void datai_run(struct Scsi_Host *shpnt);
593static void datai_end(struct Scsi_Host *shpnt);
594
595static void datao_init(struct Scsi_Host *shpnt);
596static void datao_run(struct Scsi_Host *shpnt);
597static void datao_end(struct Scsi_Host *shpnt);
598
599static void status_run(struct Scsi_Host *shpnt);
600
601static void msgi_run(struct Scsi_Host *shpnt);
602static void msgi_end(struct Scsi_Host *shpnt);
603
604static void parerr_run(struct Scsi_Host *shpnt);
605static void rsti_run(struct Scsi_Host *shpnt);
606
607static void is_complete(struct Scsi_Host *shpnt);
608
609/*
610 * driver states
611 *
612 */
613static struct {
614 char *name;
615 void (*init)(struct Scsi_Host *);
616 void (*run)(struct Scsi_Host *);
617 void (*end)(struct Scsi_Host *);
618 int spio;
619} states[] = {
620 { "idle", NULL, NULL, NULL, 0},
621 { "unknown", NULL, NULL, NULL, 0},
622 { "seldo", NULL, seldo_run, NULL, 0},
623 { "seldi", NULL, seldi_run, NULL, 0},
624 { "selto", NULL, selto_run, NULL, 0},
625 { "busfree", NULL, busfree_run, NULL, 0},
626 { "msgo", msgo_init, msgo_run, msgo_end, 1},
627 { "cmd", cmd_init, cmd_run, cmd_end, 1},
628 { "msgi", NULL, msgi_run, msgi_end, 1},
629 { "status", NULL, status_run, NULL, 1},
630 { "datai", datai_init, datai_run, datai_end, 0},
631 { "datao", datao_init, datao_run, datao_end, 0},
632 { "parerr", NULL, parerr_run, NULL, 0},
633 { "rsti", NULL, rsti_run, NULL, 0},
634};
635
636/* setup & interrupt */
637static irqreturn_t intr(int irq, void *dev_id);
638static void reset_ports(struct Scsi_Host *shpnt);
639static void aha152x_error(struct Scsi_Host *shpnt, char *msg);
640static void done(struct Scsi_Host *shpnt, unsigned char status_byte,
641 unsigned char host_byte);
642
643/* diagnostics */
644static void show_command(struct scsi_cmnd * ptr);
645static void show_queues(struct Scsi_Host *shpnt);
646static void disp_enintr(struct Scsi_Host *shpnt);
647
648
649/*
650 * queue services:
651 *
652 */
653static inline void append_SC(struct scsi_cmnd **SC, struct scsi_cmnd *new_SC)
654{
655 struct scsi_cmnd *end;
656
657 SCNEXT(new_SC) = NULL;
658 if (!*SC)
659 *SC = new_SC;
660 else {
661 for (end = *SC; SCNEXT(end); end = SCNEXT(end))
662 ;
663 SCNEXT(end) = new_SC;
664 }
665}
666
667static inline struct scsi_cmnd *remove_first_SC(struct scsi_cmnd ** SC)
668{
669 struct scsi_cmnd *ptr;
670
671 ptr = *SC;
672 if (ptr) {
673 *SC = SCNEXT(*SC);
674 SCNEXT(ptr)=NULL;
675 }
676 return ptr;
677}
678
679static inline struct scsi_cmnd *remove_lun_SC(struct scsi_cmnd ** SC,
680 int target, int lun)
681{
682 struct scsi_cmnd *ptr, *prev;
683
684 for (ptr = *SC, prev = NULL;
685 ptr && ((ptr->device->id != target) || (ptr->device->lun != lun));
686 prev = ptr, ptr = SCNEXT(ptr))
687 ;
688
689 if (ptr) {
690 if (prev)
691 SCNEXT(prev) = SCNEXT(ptr);
692 else
693 *SC = SCNEXT(ptr);
694
695 SCNEXT(ptr)=NULL;
696 }
697
698 return ptr;
699}
700
701static inline struct scsi_cmnd *remove_SC(struct scsi_cmnd **SC,
702 struct scsi_cmnd *SCp)
703{
704 struct scsi_cmnd *ptr, *prev;
705
706 for (ptr = *SC, prev = NULL;
707 ptr && SCp!=ptr;
708 prev = ptr, ptr = SCNEXT(ptr))
709 ;
710
711 if (ptr) {
712 if (prev)
713 SCNEXT(prev) = SCNEXT(ptr);
714 else
715 *SC = SCNEXT(ptr);
716
717 SCNEXT(ptr)=NULL;
718 }
719
720 return ptr;
721}
722
723static irqreturn_t swintr(int irqno, void *dev_id)
724{
725 struct Scsi_Host *shpnt = dev_id;
726
727 HOSTDATA(shpnt)->swint++;
728
729 SETPORT(DMACNTRL0, INTEN);
730 return IRQ_HANDLED;
731}
732
733struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)
734{
735 struct Scsi_Host *shpnt;
736
737 shpnt = scsi_host_alloc(&aha152x_driver_template, sizeof(struct aha152x_hostdata));
738 if (!shpnt) {
739 printk(KERN_ERR "aha152x: scsi_host_alloc failed\n");
740 return NULL;
741 }
742
743 memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt));
744 INIT_LIST_HEAD(&HOSTDATA(shpnt)->host_list);
745
746 /* need to have host registered before triggering any interrupt */
747 list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list);
748
749 shpnt->no_highmem = true;
750 shpnt->io_port = setup->io_port;
751 shpnt->n_io_port = IO_RANGE;
752 shpnt->irq = setup->irq;
753
754 if (!setup->tc1550) {
755 HOSTIOPORT0 = setup->io_port;
756 HOSTIOPORT1 = setup->io_port;
757 } else {
758 HOSTIOPORT0 = setup->io_port+0x10;
759 HOSTIOPORT1 = setup->io_port-0x10;
760 }
761
762 spin_lock_init(&QLOCK);
763 RECONNECT = setup->reconnect;
764 SYNCHRONOUS = setup->synchronous;
765 PARITY = setup->parity;
766 DELAY = setup->delay;
767 EXT_TRANS = setup->ext_trans;
768
769 SETPORT(SCSIID, setup->scsiid << 4);
770 shpnt->this_id = setup->scsiid;
771
772 if (setup->reconnect)
773 shpnt->can_queue = AHA152X_MAXQUEUE;
774
775 /* RESET OUT */
776 printk("aha152x: resetting bus...\n");
777 SETPORT(SCSISEQ, SCSIRSTO);
778 mdelay(256);
779 SETPORT(SCSISEQ, 0);
780 mdelay(DELAY);
781
782 reset_ports(shpnt);
783
784 printk(KERN_INFO
785 "aha152x%d%s: "
786 "vital data: rev=%x, "
787 "io=0x%03lx (0x%03lx/0x%03lx), "
788 "irq=%d, "
789 "scsiid=%d, "
790 "reconnect=%s, "
791 "parity=%s, "
792 "synchronous=%s, "
793 "delay=%d, "
794 "extended translation=%s\n",
795 shpnt->host_no, setup->tc1550 ? " (tc1550 mode)" : "",
796 GETPORT(REV) & 0x7,
797 shpnt->io_port, HOSTIOPORT0, HOSTIOPORT1,
798 shpnt->irq,
799 shpnt->this_id,
800 RECONNECT ? "enabled" : "disabled",
801 PARITY ? "enabled" : "disabled",
802 SYNCHRONOUS ? "enabled" : "disabled",
803 DELAY,
804 EXT_TRANS ? "enabled" : "disabled");
805
806 /* not expecting any interrupts */
807 SETPORT(SIMODE0, 0);
808 SETPORT(SIMODE1, 0);
809
810 if (request_irq(shpnt->irq, swintr, IRQF_SHARED, "aha152x", shpnt)) {
811 printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq);
812 goto out_host_put;
813 }
814
815 HOSTDATA(shpnt)->swint = 0;
816
817 printk(KERN_INFO "aha152x%d: trying software interrupt, ", shpnt->host_no);
818
819 mb();
820 SETPORT(DMACNTRL0, SWINT|INTEN);
821 mdelay(1000);
822 free_irq(shpnt->irq, shpnt);
823
824 if (!HOSTDATA(shpnt)->swint) {
825 if (TESTHI(DMASTAT, INTSTAT)) {
826 printk("lost.\n");
827 } else {
828 printk("failed.\n");
829 }
830
831 SETPORT(DMACNTRL0, INTEN);
832
833 printk(KERN_ERR "aha152x%d: irq %d possibly wrong. "
834 "Please verify.\n", shpnt->host_no, shpnt->irq);
835 goto out_host_put;
836 }
837 printk("ok.\n");
838
839
840 /* clear interrupts */
841 SETPORT(SSTAT0, 0x7f);
842 SETPORT(SSTAT1, 0xef);
843
844 if (request_irq(shpnt->irq, intr, IRQF_SHARED, "aha152x", shpnt)) {
845 printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq);
846 goto out_host_put;
847 }
848
849 if( scsi_add_host(shpnt, NULL) ) {
850 free_irq(shpnt->irq, shpnt);
851 printk(KERN_ERR "aha152x%d: failed to add host.\n", shpnt->host_no);
852 goto out_host_put;
853 }
854
855 scsi_scan_host(shpnt);
856
857 return shpnt;
858
859out_host_put:
860 list_del(&HOSTDATA(shpnt)->host_list);
861 scsi_host_put(shpnt);
862
863 return NULL;
864}
865
866void aha152x_release(struct Scsi_Host *shpnt)
867{
868 if (!shpnt)
869 return;
870
871 scsi_remove_host(shpnt);
872 if (shpnt->irq)
873 free_irq(shpnt->irq, shpnt);
874
875#if !defined(AHA152X_PCMCIA)
876 if (shpnt->io_port)
877 release_region(shpnt->io_port, IO_RANGE);
878#endif
879
880#ifdef __ISAPNP__
881 if (HOSTDATA(shpnt)->pnpdev)
882 pnp_device_detach(HOSTDATA(shpnt)->pnpdev);
883#endif
884
885 list_del(&HOSTDATA(shpnt)->host_list);
886 scsi_host_put(shpnt);
887}
888
889
890/*
891 * setup controller to generate interrupts depending
892 * on current state (lock has to be acquired)
893 *
894 */
895static int setup_expected_interrupts(struct Scsi_Host *shpnt)
896{
897 if(CURRENT_SC) {
898 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);
899
900 acp->phase |= 1 << 16;
901
902 if (acp->phase & selecting) {
903 SETPORT(SSTAT1, SELTO);
904 SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0));
905 SETPORT(SIMODE1, ENSELTIMO);
906 } else {
907 SETPORT(SIMODE0, (acp->phase & spiordy) ? ENSPIORDY : 0);
908 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
909 }
910 } else if(STATE==seldi) {
911 SETPORT(SIMODE0, 0);
912 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
913 } else {
914 SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0);
915 SETPORT(SIMODE1, ENSCSIRST | ( (ISSUE_SC||DONE_SC) ? ENBUSFREE : 0));
916 }
917
918 if(!HOSTDATA(shpnt)->in_intr)
919 SETBITS(DMACNTRL0, INTEN);
920
921 return TESTHI(DMASTAT, INTSTAT);
922}
923
924
925/*
926 * Queue a command and setup interrupts for a free bus.
927 */
928static int aha152x_internal_queue(struct scsi_cmnd *SCpnt,
929 struct completion *complete, int phase)
930{
931 struct aha152x_cmd_priv *acp = aha152x_priv(SCpnt);
932 struct Scsi_Host *shpnt = SCpnt->device->host;
933 unsigned long flags;
934
935 acp->phase = not_issued | phase;
936 acp->status = 0x1; /* Illegal status by SCSI standard */
937 acp->message = 0;
938 acp->sent_command = 0;
939
940 if (acp->phase & (resetting | check_condition)) {
941 if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) {
942 scmd_printk(KERN_ERR, SCpnt, "cannot reuse command\n");
943 return FAILED;
944 }
945 } else {
946 SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC);
947 if(!SCpnt->host_scribble) {
948 scmd_printk(KERN_ERR, SCpnt, "allocation failed\n");
949 return FAILED;
950 }
951 }
952
953 SCNEXT(SCpnt) = NULL;
954 SCSEM(SCpnt) = complete;
955
956 /* setup scratch area
957 SCp.ptr : buffer pointer
958 SCp.this_residual : buffer length
959 SCp.buffer : next buffer
960 SCp.phase : current state of the command */
961
962 if ((phase & resetting) || !scsi_sglist(SCpnt)) {
963 acp->ptr = NULL;
964 acp->this_residual = 0;
965 scsi_set_resid(SCpnt, 0);
966 acp->buffer = NULL;
967 } else {
968 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
969 acp->buffer = scsi_sglist(SCpnt);
970 acp->ptr = SG_ADDRESS(acp->buffer);
971 acp->this_residual = acp->buffer->length;
972 }
973
974 DO_LOCK(flags);
975
976#if defined(AHA152X_STAT)
977 HOSTDATA(shpnt)->total_commands++;
978#endif
979
980 /* Turn led on, when this is the first command. */
981 HOSTDATA(shpnt)->commands++;
982 if (HOSTDATA(shpnt)->commands==1)
983 SETPORT(PORTA, 1);
984
985 append_SC(&ISSUE_SC, SCpnt);
986
987 if(!HOSTDATA(shpnt)->in_intr)
988 setup_expected_interrupts(shpnt);
989
990 DO_UNLOCK(flags);
991
992 return 0;
993}
994
995/*
996 * queue a command
997 *
998 */
999static int aha152x_queue_lck(struct scsi_cmnd *SCpnt)
1000{
1001 return aha152x_internal_queue(SCpnt, NULL, 0);
1002}
1003
1004static DEF_SCSI_QCMD(aha152x_queue)
1005
1006
1007/*
1008 *
1009 */
1010static void reset_done(struct scsi_cmnd *SCpnt)
1011{
1012 if(SCSEM(SCpnt)) {
1013 complete(SCSEM(SCpnt));
1014 } else {
1015 printk(KERN_ERR "aha152x: reset_done w/o completion\n");
1016 }
1017}
1018
1019static void aha152x_scsi_done(struct scsi_cmnd *SCpnt)
1020{
1021 if (aha152x_priv(SCpnt)->phase & resetting)
1022 reset_done(SCpnt);
1023 else
1024 scsi_done(SCpnt);
1025}
1026
1027/*
1028 * Abort a command
1029 *
1030 */
1031static int aha152x_abort(struct scsi_cmnd *SCpnt)
1032{
1033 struct Scsi_Host *shpnt = SCpnt->device->host;
1034 struct scsi_cmnd *ptr;
1035 unsigned long flags;
1036
1037 DO_LOCK(flags);
1038
1039 ptr=remove_SC(&ISSUE_SC, SCpnt);
1040
1041 if(ptr) {
1042 HOSTDATA(shpnt)->commands--;
1043 if (!HOSTDATA(shpnt)->commands)
1044 SETPORT(PORTA, 0);
1045 DO_UNLOCK(flags);
1046
1047 kfree(SCpnt->host_scribble);
1048 SCpnt->host_scribble=NULL;
1049
1050 return SUCCESS;
1051 }
1052
1053 DO_UNLOCK(flags);
1054
1055 /*
1056 * FIXME:
1057 * for current command: queue ABORT for message out and raise ATN
1058 * for disconnected command: pseudo SC with ABORT message or ABORT on reselection?
1059 *
1060 */
1061
1062 scmd_printk(KERN_ERR, SCpnt,
1063 "cannot abort running or disconnected command\n");
1064
1065 return FAILED;
1066}
1067
1068/*
1069 * Reset a device
1070 *
1071 */
1072static int aha152x_device_reset(struct scsi_cmnd * SCpnt)
1073{
1074 struct Scsi_Host *shpnt = SCpnt->device->host;
1075 DECLARE_COMPLETION_ONSTACK(done);
1076 int ret, issued, disconnected;
1077 unsigned char old_cmd_len = SCpnt->cmd_len;
1078 unsigned long flags;
1079 unsigned long timeleft;
1080
1081 if(CURRENT_SC==SCpnt) {
1082 scmd_printk(KERN_ERR, SCpnt, "cannot reset current device\n");
1083 return FAILED;
1084 }
1085
1086 DO_LOCK(flags);
1087 issued = remove_SC(&ISSUE_SC, SCpnt) == NULL;
1088 disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt);
1089 DO_UNLOCK(flags);
1090
1091 SCpnt->cmd_len = 0;
1092
1093 aha152x_internal_queue(SCpnt, &done, resetting);
1094
1095 timeleft = wait_for_completion_timeout(&done, 100*HZ);
1096 if (!timeleft) {
1097 /* remove command from issue queue */
1098 DO_LOCK(flags);
1099 remove_SC(&ISSUE_SC, SCpnt);
1100 DO_UNLOCK(flags);
1101 }
1102
1103 SCpnt->cmd_len = old_cmd_len;
1104
1105 DO_LOCK(flags);
1106
1107 if (aha152x_priv(SCpnt)->phase & resetted) {
1108 HOSTDATA(shpnt)->commands--;
1109 if (!HOSTDATA(shpnt)->commands)
1110 SETPORT(PORTA, 0);
1111 kfree(SCpnt->host_scribble);
1112 SCpnt->host_scribble=NULL;
1113
1114 ret = SUCCESS;
1115 } else {
1116 /* requeue */
1117 if(!issued) {
1118 append_SC(&ISSUE_SC, SCpnt);
1119 } else if(disconnected) {
1120 append_SC(&DISCONNECTED_SC, SCpnt);
1121 }
1122
1123 ret = FAILED;
1124 }
1125
1126 DO_UNLOCK(flags);
1127 return ret;
1128}
1129
1130static void free_hard_reset_SCs(struct Scsi_Host *shpnt,
1131 struct scsi_cmnd **SCs)
1132{
1133 struct scsi_cmnd *ptr;
1134
1135 ptr=*SCs;
1136 while(ptr) {
1137 struct scsi_cmnd *next;
1138
1139 if(SCDATA(ptr)) {
1140 next = SCNEXT(ptr);
1141 } else {
1142 scmd_printk(KERN_DEBUG, ptr,
1143 "queue corrupted at %p\n", ptr);
1144 next = NULL;
1145 }
1146
1147 if (!ptr->device->soft_reset) {
1148 remove_SC(SCs, ptr);
1149 HOSTDATA(shpnt)->commands--;
1150 kfree(ptr->host_scribble);
1151 ptr->host_scribble=NULL;
1152 }
1153
1154 ptr = next;
1155 }
1156}
1157
1158/*
1159 * Reset the bus
1160 *
1161 * AIC-6260 has a hard reset (MRST signal), but apparently
1162 * one cannot trigger it via software. So live with
1163 * a soft reset; no-one seemed to have cared.
1164 */
1165static int aha152x_bus_reset_host(struct Scsi_Host *shpnt)
1166{
1167 unsigned long flags;
1168
1169 DO_LOCK(flags);
1170
1171 free_hard_reset_SCs(shpnt, &ISSUE_SC);
1172 free_hard_reset_SCs(shpnt, &DISCONNECTED_SC);
1173
1174 SETPORT(SCSISEQ, SCSIRSTO);
1175 mdelay(256);
1176 SETPORT(SCSISEQ, 0);
1177 mdelay(DELAY);
1178
1179 setup_expected_interrupts(shpnt);
1180 if(HOSTDATA(shpnt)->commands==0)
1181 SETPORT(PORTA, 0);
1182
1183 DO_UNLOCK(flags);
1184
1185 return SUCCESS;
1186}
1187
1188/*
1189 * Reset the bus
1190 *
1191 */
1192static int aha152x_bus_reset(struct scsi_cmnd *SCpnt)
1193{
1194 return aha152x_bus_reset_host(SCpnt->device->host);
1195}
1196
1197/*
1198 * Restore default values to the AIC-6260 registers and reset the fifos
1199 *
1200 */
1201static void reset_ports(struct Scsi_Host *shpnt)
1202{
1203 unsigned long flags;
1204
1205 /* disable interrupts */
1206 SETPORT(DMACNTRL0, RSTFIFO);
1207
1208 SETPORT(SCSISEQ, 0);
1209
1210 SETPORT(SXFRCTL1, 0);
1211 SETPORT(SCSISIG, 0);
1212 SETRATE(0);
1213
1214 /* clear all interrupt conditions */
1215 SETPORT(SSTAT0, 0x7f);
1216 SETPORT(SSTAT1, 0xef);
1217
1218 SETPORT(SSTAT4, SYNCERR | FWERR | FRERR);
1219
1220 SETPORT(DMACNTRL0, 0);
1221 SETPORT(DMACNTRL1, 0);
1222
1223 SETPORT(BRSTCNTRL, 0xf1);
1224
1225 /* clear SCSI fifos and transfer count */
1226 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1227 SETPORT(SXFRCTL0, CH1);
1228
1229 DO_LOCK(flags);
1230 setup_expected_interrupts(shpnt);
1231 DO_UNLOCK(flags);
1232}
1233
1234/*
1235 * Reset the host (bus and controller)
1236 *
1237 */
1238int aha152x_host_reset_host(struct Scsi_Host *shpnt)
1239{
1240 aha152x_bus_reset_host(shpnt);
1241 reset_ports(shpnt);
1242
1243 return SUCCESS;
1244}
1245
1246/*
1247 * Return the "logical geometry"
1248 *
1249 */
1250static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev,
1251 sector_t capacity, int *info_array)
1252{
1253 struct Scsi_Host *shpnt = sdev->host;
1254
1255 /* try default translation */
1256 info_array[0] = 64;
1257 info_array[1] = 32;
1258 info_array[2] = (unsigned long)capacity / (64 * 32);
1259
1260 /* for disks >1GB do some guessing */
1261 if (info_array[2] >= 1024) {
1262 int info[3];
1263
1264 /* try to figure out the geometry from the partition table */
1265 if (scsicam_bios_param(bdev, capacity, info) < 0 ||
1266 !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) {
1267 if (EXT_TRANS) {
1268 printk(KERN_NOTICE
1269 "aha152x: unable to verify geometry for disk with >1GB.\n"
1270 " using extended translation.\n");
1271 info_array[0] = 255;
1272 info_array[1] = 63;
1273 info_array[2] = (unsigned long)capacity / (255 * 63);
1274 } else {
1275 printk(KERN_NOTICE
1276 "aha152x: unable to verify geometry for disk with >1GB.\n"
1277 " Using default translation. Please verify yourself.\n"
1278 " Perhaps you need to enable extended translation in the driver.\n"
1279 " See Documentation/scsi/aha152x.rst for details.\n");
1280 }
1281 } else {
1282 info_array[0] = info[0];
1283 info_array[1] = info[1];
1284 info_array[2] = info[2];
1285
1286 if (info[0] == 255 && !EXT_TRANS) {
1287 printk(KERN_NOTICE
1288 "aha152x: current partition table is using extended translation.\n"
1289 " using it also, although it's not explicitly enabled.\n");
1290 }
1291 }
1292 }
1293
1294 return 0;
1295}
1296
1297/*
1298 * Internal done function
1299 *
1300 */
1301static void done(struct Scsi_Host *shpnt, unsigned char status_byte,
1302 unsigned char host_byte)
1303{
1304 if (CURRENT_SC) {
1305 if(DONE_SC)
1306 scmd_printk(KERN_ERR, CURRENT_SC,
1307 "there's already a completed command %p "
1308 "- will cause abort\n", DONE_SC);
1309
1310 DONE_SC = CURRENT_SC;
1311 CURRENT_SC = NULL;
1312 set_status_byte(DONE_SC, status_byte);
1313 set_host_byte(DONE_SC, host_byte);
1314 } else
1315 printk(KERN_ERR "aha152x: done() called outside of command\n");
1316}
1317
1318static struct work_struct aha152x_tq;
1319
1320/*
1321 * Run service completions on the card with interrupts enabled.
1322 *
1323 */
1324static void run(struct work_struct *work)
1325{
1326 struct aha152x_hostdata *hd;
1327
1328 list_for_each_entry(hd, &aha152x_host_list, host_list) {
1329 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
1330
1331 is_complete(shost);
1332 }
1333}
1334
1335/*
1336 * Interrupt handler
1337 *
1338 */
1339static irqreturn_t intr(int irqno, void *dev_id)
1340{
1341 struct Scsi_Host *shpnt = dev_id;
1342 unsigned long flags;
1343 unsigned char rev, dmacntrl0;
1344
1345 /*
1346 * Read a couple of registers that are known to not be all 1's. If
1347 * we read all 1's (-1), that means that either:
1348 *
1349 * a. The host adapter chip has gone bad, and we cannot control it,
1350 * OR
1351 * b. The host adapter is a PCMCIA card that has been ejected
1352 *
1353 * In either case, we cannot do anything with the host adapter at
1354 * this point in time. So just ignore the interrupt and return.
1355 * In the latter case, the interrupt might actually be meant for
1356 * someone else sharing this IRQ, and that driver will handle it.
1357 */
1358 rev = GETPORT(REV);
1359 dmacntrl0 = GETPORT(DMACNTRL0);
1360 if ((rev == 0xFF) && (dmacntrl0 == 0xFF))
1361 return IRQ_NONE;
1362
1363 if( TESTLO(DMASTAT, INTSTAT) )
1364 return IRQ_NONE;
1365
1366 /* no more interrupts from the controller, while we're busy.
1367 INTEN is restored by the BH handler */
1368 CLRBITS(DMACNTRL0, INTEN);
1369
1370 DO_LOCK(flags);
1371 if( HOSTDATA(shpnt)->service==0 ) {
1372 HOSTDATA(shpnt)->service=1;
1373
1374 /* Poke the BH handler */
1375 INIT_WORK(&aha152x_tq, run);
1376 schedule_work(&aha152x_tq);
1377 }
1378 DO_UNLOCK(flags);
1379
1380 return IRQ_HANDLED;
1381}
1382
1383/*
1384 * busfree phase
1385 * - handle completition/disconnection/error of current command
1386 * - start selection for next command (if any)
1387 */
1388static void busfree_run(struct Scsi_Host *shpnt)
1389{
1390 unsigned long flags;
1391#if defined(AHA152X_STAT)
1392 int action=0;
1393#endif
1394
1395 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
1396 SETPORT(SXFRCTL0, CH1);
1397
1398 SETPORT(SSTAT1, CLRBUSFREE);
1399
1400 if(CURRENT_SC) {
1401 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);
1402
1403#if defined(AHA152X_STAT)
1404 action++;
1405#endif
1406 acp->phase &= ~syncneg;
1407
1408 if (acp->phase & completed) {
1409 /* target sent COMMAND COMPLETE */
1410 done(shpnt, acp->status, DID_OK);
1411
1412 } else if (acp->phase & aborted) {
1413 done(shpnt, acp->status, DID_ABORT);
1414
1415 } else if (acp->phase & resetted) {
1416 done(shpnt, acp->status, DID_RESET);
1417
1418 } else if (acp->phase & disconnected) {
1419 /* target sent DISCONNECT */
1420#if defined(AHA152X_STAT)
1421 HOSTDATA(shpnt)->disconnections++;
1422#endif
1423 append_SC(&DISCONNECTED_SC, CURRENT_SC);
1424 acp->phase |= 1 << 16;
1425 CURRENT_SC = NULL;
1426
1427 } else {
1428 done(shpnt, SAM_STAT_GOOD, DID_ERROR);
1429 }
1430#if defined(AHA152X_STAT)
1431 } else {
1432 HOSTDATA(shpnt)->busfree_without_old_command++;
1433#endif
1434 }
1435
1436 DO_LOCK(flags);
1437
1438 if(DONE_SC) {
1439#if defined(AHA152X_STAT)
1440 action++;
1441#endif
1442
1443 if (aha152x_priv(DONE_SC)->phase & check_condition) {
1444 struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC;
1445 struct aha152x_scdata *sc = SCDATA(cmd);
1446
1447 scsi_eh_restore_cmnd(cmd, &sc->ses);
1448
1449 aha152x_priv(cmd)->status = SAM_STAT_CHECK_CONDITION;
1450
1451 HOSTDATA(shpnt)->commands--;
1452 if (!HOSTDATA(shpnt)->commands)
1453 SETPORT(PORTA, 0); /* turn led off */
1454 } else if (aha152x_priv(DONE_SC)->status == SAM_STAT_CHECK_CONDITION) {
1455#if defined(AHA152X_STAT)
1456 HOSTDATA(shpnt)->busfree_with_check_condition++;
1457#endif
1458
1459 if (!(aha152x_priv(DONE_SC)->phase & not_issued)) {
1460 struct aha152x_scdata *sc;
1461 struct scsi_cmnd *ptr = DONE_SC;
1462 DONE_SC=NULL;
1463
1464 sc = SCDATA(ptr);
1465 /* It was allocated in aha152x_internal_queue? */
1466 BUG_ON(!sc);
1467 scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0);
1468
1469 DO_UNLOCK(flags);
1470 aha152x_internal_queue(ptr, NULL, check_condition);
1471 DO_LOCK(flags);
1472 }
1473 }
1474
1475 if (DONE_SC) {
1476 struct scsi_cmnd *ptr = DONE_SC;
1477 DONE_SC=NULL;
1478
1479 /* turn led off, when no commands are in the driver */
1480 HOSTDATA(shpnt)->commands--;
1481 if (!HOSTDATA(shpnt)->commands)
1482 SETPORT(PORTA, 0); /* turn led off */
1483
1484 if (!(aha152x_priv(ptr)->phase & resetting)) {
1485 kfree(ptr->host_scribble);
1486 ptr->host_scribble=NULL;
1487 }
1488
1489 DO_UNLOCK(flags);
1490 aha152x_scsi_done(ptr);
1491 DO_LOCK(flags);
1492 }
1493
1494 DONE_SC=NULL;
1495#if defined(AHA152X_STAT)
1496 } else {
1497 HOSTDATA(shpnt)->busfree_without_done_command++;
1498#endif
1499 }
1500
1501 if(ISSUE_SC)
1502 CURRENT_SC = remove_first_SC(&ISSUE_SC);
1503
1504 DO_UNLOCK(flags);
1505
1506 if(CURRENT_SC) {
1507 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);
1508
1509#if defined(AHA152X_STAT)
1510 action++;
1511#endif
1512 acp->phase |= selecting;
1513
1514 /* clear selection timeout */
1515 SETPORT(SSTAT1, SELTO);
1516
1517 SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id);
1518 SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER);
1519 SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0));
1520 } else {
1521#if defined(AHA152X_STAT)
1522 HOSTDATA(shpnt)->busfree_without_new_command++;
1523#endif
1524 SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0);
1525 }
1526
1527#if defined(AHA152X_STAT)
1528 if(!action)
1529 HOSTDATA(shpnt)->busfree_without_any_action++;
1530#endif
1531}
1532
1533/*
1534 * Selection done (OUT)
1535 * - queue IDENTIFY message and SDTR to selected target for message out
1536 * (ATN asserted automagically via ENAUTOATNO in busfree())
1537 */
1538static void seldo_run(struct Scsi_Host *shpnt)
1539{
1540 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);
1541
1542 SETPORT(SCSISIG, 0);
1543 SETPORT(SSTAT1, CLRBUSFREE);
1544 SETPORT(SSTAT1, CLRPHASECHG);
1545
1546 acp->phase &= ~(selecting | not_issued);
1547
1548 SETPORT(SCSISEQ, 0);
1549
1550 if (TESTLO(SSTAT0, SELDO)) {
1551 scmd_printk(KERN_ERR, CURRENT_SC,
1552 "aha152x: passing bus free condition\n");
1553 done(shpnt, SAM_STAT_GOOD, DID_NO_CONNECT);
1554 return;
1555 }
1556
1557 SETPORT(SSTAT0, CLRSELDO);
1558
1559 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1560
1561 if (acp->phase & aborting) {
1562 ADDMSGO(ABORT);
1563 } else if (acp->phase & resetting) {
1564 ADDMSGO(BUS_DEVICE_RESET);
1565 } else if (SYNCNEG==0 && SYNCHRONOUS) {
1566 acp->phase |= syncneg;
1567 MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8);
1568 SYNCNEG=1; /* negotiation in progress */
1569 }
1570
1571 SETRATE(SYNCRATE);
1572}
1573
1574/*
1575 * Selection timeout
1576 * - return command to mid-level with failure cause
1577 *
1578 */
1579static void selto_run(struct Scsi_Host *shpnt)
1580{
1581 struct aha152x_cmd_priv *acp;
1582
1583 SETPORT(SCSISEQ, 0);
1584 SETPORT(SSTAT1, CLRSELTIMO);
1585
1586 if (!CURRENT_SC)
1587 return;
1588
1589 acp = aha152x_priv(CURRENT_SC);
1590 acp->phase &= ~selecting;
1591
1592 if (acp->phase & aborted)
1593 done(shpnt, SAM_STAT_GOOD, DID_ABORT);
1594 else if (TESTLO(SSTAT0, SELINGO))
1595 done(shpnt, SAM_STAT_GOOD, DID_BUS_BUSY);
1596 else
1597 /* ARBITRATION won, but SELECTION failed */
1598 done(shpnt, SAM_STAT_GOOD, DID_NO_CONNECT);
1599}
1600
1601/*
1602 * Selection in done
1603 * - put current command back to issue queue
1604 * (reconnection of a disconnected nexus instead
1605 * of successful selection out)
1606 *
1607 */
1608static void seldi_run(struct Scsi_Host *shpnt)
1609{
1610 int selid;
1611 int target;
1612 unsigned long flags;
1613
1614 SETPORT(SCSISIG, 0);
1615 SETPORT(SSTAT0, CLRSELDI);
1616 SETPORT(SSTAT1, CLRBUSFREE);
1617 SETPORT(SSTAT1, CLRPHASECHG);
1618
1619 if(CURRENT_SC) {
1620 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);
1621
1622 if (!(acp->phase & not_issued))
1623 scmd_printk(KERN_ERR, CURRENT_SC,
1624 "command should not have been issued yet\n");
1625
1626 DO_LOCK(flags);
1627 append_SC(&ISSUE_SC, CURRENT_SC);
1628 DO_UNLOCK(flags);
1629
1630 CURRENT_SC = NULL;
1631 }
1632
1633 if (!DISCONNECTED_SC)
1634 return;
1635
1636 RECONN_TARGET=-1;
1637
1638 selid = GETPORT(SELID) & ~(1 << shpnt->this_id);
1639
1640 if (selid==0) {
1641 shost_printk(KERN_INFO, shpnt,
1642 "target id unknown (%02x)\n", selid);
1643 return;
1644 }
1645
1646 for(target=7; !(selid & (1 << target)); target--)
1647 ;
1648
1649 if(selid & ~(1 << target)) {
1650 shost_printk(KERN_INFO, shpnt,
1651 "multiple targets reconnected (%02x)\n", selid);
1652 }
1653
1654
1655 SETPORT(SCSIID, (shpnt->this_id << OID_) | target);
1656 SETPORT(SCSISEQ, 0);
1657
1658 SETRATE(HOSTDATA(shpnt)->syncrate[target]);
1659
1660 RECONN_TARGET=target;
1661}
1662
1663/*
1664 * message in phase
1665 * - handle initial message after reconnection to identify
1666 * reconnecting nexus
1667 * - queue command on DISCONNECTED_SC on DISCONNECT message
1668 * - set completed flag on COMMAND COMPLETE
1669 * (other completition code moved to busfree_run)
1670 * - handle response to SDTR
1671 * - clear synchronous transfer agreements on BUS RESET
1672 *
1673 * FIXME: what about SAVE POINTERS, RESTORE POINTERS?
1674 *
1675 */
1676static void msgi_run(struct Scsi_Host *shpnt)
1677{
1678 for(;;) {
1679 struct aha152x_cmd_priv *acp;
1680 int sstat1 = GETPORT(SSTAT1);
1681
1682 if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT))
1683 return;
1684
1685 if (TESTLO(SSTAT0, SPIORDY))
1686 return;
1687
1688 ADDMSGI(GETPORT(SCSIDAT));
1689
1690 if(!CURRENT_SC) {
1691 if(LASTSTATE!=seldi) {
1692 shost_printk(KERN_ERR, shpnt,
1693 "message in w/o current command"
1694 " not after reselection\n");
1695 }
1696
1697 /*
1698 * Handle reselection
1699 */
1700 if(!(MSGI(0) & IDENTIFY_BASE)) {
1701 shost_printk(KERN_ERR, shpnt,
1702 "target didn't identify after reselection\n");
1703 continue;
1704 }
1705
1706 CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f);
1707
1708 if (!CURRENT_SC) {
1709 show_queues(shpnt);
1710 shost_printk(KERN_ERR, shpnt,
1711 "no disconnected command"
1712 " for target %d/%d\n",
1713 RECONN_TARGET, MSGI(0) & 0x3f);
1714 continue;
1715 }
1716
1717 acp = aha152x_priv(CURRENT_SC);
1718 acp->message = MSGI(0);
1719 acp->phase &= ~disconnected;
1720
1721 MSGILEN=0;
1722
1723 /* next message if any */
1724 continue;
1725 }
1726
1727 acp = aha152x_priv(CURRENT_SC);
1728 acp->message = MSGI(0);
1729
1730 switch (MSGI(0)) {
1731 case DISCONNECT:
1732 if (!RECONNECT)
1733 scmd_printk(KERN_WARNING, CURRENT_SC,
1734 "target was not allowed to disconnect\n");
1735
1736 acp->phase |= disconnected;
1737 break;
1738
1739 case COMMAND_COMPLETE:
1740 acp->phase |= completed;
1741 break;
1742
1743 case MESSAGE_REJECT:
1744 if (SYNCNEG==1) {
1745 scmd_printk(KERN_INFO, CURRENT_SC,
1746 "Synchronous Data Transfer Request"
1747 " was rejected\n");
1748 SYNCNEG=2; /* negotiation completed */
1749 } else
1750 scmd_printk(KERN_INFO, CURRENT_SC,
1751 "inbound message (MESSAGE REJECT)\n");
1752 break;
1753
1754 case SAVE_POINTERS:
1755 break;
1756
1757 case RESTORE_POINTERS:
1758 break;
1759
1760 case EXTENDED_MESSAGE:
1761 if(MSGILEN<2 || MSGILEN<MSGI(1)+2) {
1762 /* not yet completed */
1763 continue;
1764 }
1765
1766 switch (MSGI(2)) {
1767 case EXTENDED_SDTR:
1768 {
1769 long ticks;
1770
1771 if (MSGI(1) != 3) {
1772 scmd_printk(KERN_ERR, CURRENT_SC,
1773 "SDTR message length!=3\n");
1774 break;
1775 }
1776
1777 if (!HOSTDATA(shpnt)->synchronous)
1778 break;
1779
1780 printk(INFO_LEAD, CMDINFO(CURRENT_SC));
1781 spi_print_msg(&MSGI(0));
1782 printk("\n");
1783
1784 ticks = (MSGI(3) * 4 + 49) / 50;
1785
1786 if (syncneg) {
1787 /* negotiation in progress */
1788 if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) {
1789 ADDMSGO(MESSAGE_REJECT);
1790 scmd_printk(KERN_INFO,
1791 CURRENT_SC,
1792 "received Synchronous Data Transfer Request invalid - rejected\n");
1793 break;
1794 }
1795
1796 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1797 } else if (ticks <= 9 && MSGI(4) >= 1) {
1798 ADDMSGO(EXTENDED_MESSAGE);
1799 ADDMSGO(3);
1800 ADDMSGO(EXTENDED_SDTR);
1801 if (ticks < 4) {
1802 ticks = 4;
1803 ADDMSGO(50);
1804 } else
1805 ADDMSGO(MSGI(3));
1806
1807 if (MSGI(4) > 8)
1808 MSGI(4) = 8;
1809
1810 ADDMSGO(MSGI(4));
1811
1812 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);
1813 } else {
1814 /* requested SDTR is too slow, do it asynchronously */
1815 scmd_printk(KERN_INFO,
1816 CURRENT_SC,
1817 "Synchronous Data Transfer Request too slow - Rejecting\n");
1818 ADDMSGO(MESSAGE_REJECT);
1819 }
1820
1821 /* negotiation completed */
1822 SYNCNEG=2;
1823 SETRATE(SYNCRATE);
1824 }
1825 break;
1826
1827 case BUS_DEVICE_RESET:
1828 {
1829 int i;
1830
1831 for(i=0; i<8; i++) {
1832 HOSTDATA(shpnt)->syncrate[i]=0;
1833 HOSTDATA(shpnt)->syncneg[i]=0;
1834 }
1835
1836 }
1837 break;
1838
1839 case EXTENDED_MODIFY_DATA_POINTER:
1840 case EXTENDED_EXTENDED_IDENTIFY:
1841 case EXTENDED_WDTR:
1842 default:
1843 ADDMSGO(MESSAGE_REJECT);
1844 break;
1845 }
1846 break;
1847 }
1848
1849 MSGILEN=0;
1850 }
1851}
1852
1853static void msgi_end(struct Scsi_Host *shpnt)
1854{
1855 if(MSGILEN>0)
1856 scmd_printk(KERN_WARNING, CURRENT_SC,
1857 "target left before message completed (%d)\n",
1858 MSGILEN);
1859
1860 if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE))
1861 SETPORT(SCSISIG, P_MSGI | SIG_ATNO);
1862}
1863
1864/*
1865 * message out phase
1866 *
1867 */
1868static void msgo_init(struct Scsi_Host *shpnt)
1869{
1870 if(MSGOLEN==0) {
1871 if ((aha152x_priv(CURRENT_SC)->phase & syncneg) &&
1872 SYNCNEG == 2 && SYNCRATE == 0) {
1873 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
1874 } else {
1875 scmd_printk(KERN_INFO, CURRENT_SC,
1876 "unexpected MESSAGE OUT phase; rejecting\n");
1877 ADDMSGO(MESSAGE_REJECT);
1878 }
1879 }
1880
1881}
1882
1883/*
1884 * message out phase
1885 *
1886 */
1887static void msgo_run(struct Scsi_Host *shpnt)
1888{
1889 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);
1890
1891 while(MSGO_I<MSGOLEN) {
1892 if (TESTLO(SSTAT0, SPIORDY))
1893 return;
1894
1895 if (MSGO_I==MSGOLEN-1) {
1896 /* Leave MESSAGE OUT after transfer */
1897 SETPORT(SSTAT1, CLRATNO);
1898 }
1899
1900
1901 if (MSGO(MSGO_I) & IDENTIFY_BASE)
1902 acp->phase |= identified;
1903
1904 if (MSGO(MSGO_I)==ABORT)
1905 acp->phase |= aborted;
1906
1907 if (MSGO(MSGO_I)==BUS_DEVICE_RESET)
1908 acp->phase |= resetted;
1909
1910 SETPORT(SCSIDAT, MSGO(MSGO_I++));
1911 }
1912}
1913
1914static void msgo_end(struct Scsi_Host *shpnt)
1915{
1916 if(MSGO_I<MSGOLEN) {
1917 scmd_printk(KERN_ERR, CURRENT_SC,
1918 "message sent incompletely (%d/%d)\n",
1919 MSGO_I, MSGOLEN);
1920 if(SYNCNEG==1) {
1921 scmd_printk(KERN_INFO, CURRENT_SC,
1922 "Synchronous Data Transfer Request was rejected\n");
1923 SYNCNEG=2;
1924 }
1925 }
1926
1927 MSGO_I = 0;
1928 MSGOLEN = 0;
1929}
1930
1931/*
1932 * command phase
1933 *
1934 */
1935static void cmd_init(struct Scsi_Host *shpnt)
1936{
1937 if (aha152x_priv(CURRENT_SC)->sent_command) {
1938 scmd_printk(KERN_ERR, CURRENT_SC,
1939 "command already sent\n");
1940 done(shpnt, SAM_STAT_GOOD, DID_ERROR);
1941 return;
1942 }
1943
1944 CMD_I=0;
1945}
1946
1947/*
1948 * command phase
1949 *
1950 */
1951static void cmd_run(struct Scsi_Host *shpnt)
1952{
1953 while(CMD_I<CURRENT_SC->cmd_len) {
1954 if (TESTLO(SSTAT0, SPIORDY))
1955 return;
1956
1957 SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]);
1958 }
1959}
1960
1961static void cmd_end(struct Scsi_Host *shpnt)
1962{
1963 if(CMD_I<CURRENT_SC->cmd_len)
1964 scmd_printk(KERN_ERR, CURRENT_SC,
1965 "command sent incompletely (%d/%d)\n",
1966 CMD_I, CURRENT_SC->cmd_len);
1967 else
1968 aha152x_priv(CURRENT_SC)->sent_command++;
1969}
1970
1971/*
1972 * status phase
1973 *
1974 */
1975static void status_run(struct Scsi_Host *shpnt)
1976{
1977 if (TESTLO(SSTAT0, SPIORDY))
1978 return;
1979
1980 aha152x_priv(CURRENT_SC)->status = GETPORT(SCSIDAT);
1981
1982}
1983
1984/*
1985 * data in phase
1986 *
1987 */
1988static void datai_init(struct Scsi_Host *shpnt)
1989{
1990 SETPORT(DMACNTRL0, RSTFIFO);
1991 SETPORT(DMACNTRL0, RSTFIFO|ENDMA);
1992
1993 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
1994 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
1995
1996 SETPORT(SIMODE0, 0);
1997 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE);
1998
1999 DATA_LEN=0;
2000}
2001
2002static void datai_run(struct Scsi_Host *shpnt)
2003{
2004 struct aha152x_cmd_priv *acp;
2005 unsigned long the_time;
2006 int fifodata, data_count;
2007
2008 /*
2009 * loop while the phase persists or the fifos are not empty
2010 *
2011 */
2012 while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) {
2013 /* FIXME: maybe this should be done by setting up
2014 * STCNT to trigger ENSWRAP interrupt, instead of
2015 * polling for DFIFOFULL
2016 */
2017 the_time=jiffies + 100*HZ;
2018 while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time))
2019 barrier();
2020
2021 if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) {
2022 scmd_printk(KERN_ERR, CURRENT_SC, "datai timeout\n");
2023 break;
2024 }
2025
2026 if(TESTHI(DMASTAT, DFIFOFULL)) {
2027 fifodata = 128;
2028 } else {
2029 the_time=jiffies + 100*HZ;
2030 while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time))
2031 barrier();
2032
2033 if(TESTLO(SSTAT2, SEMPTY)) {
2034 scmd_printk(KERN_ERR, CURRENT_SC,
2035 "datai sempty timeout");
2036 break;
2037 }
2038
2039 fifodata = GETPORT(FIFOSTAT);
2040 }
2041
2042 acp = aha152x_priv(CURRENT_SC);
2043 if (acp->this_residual > 0) {
2044 while (fifodata > 0 && acp->this_residual > 0) {
2045 data_count = fifodata > acp->this_residual ?
2046 acp->this_residual : fifodata;
2047 fifodata -= data_count;
2048
2049 if (data_count & 1) {
2050 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2051 *acp->ptr++ = GETPORT(DATAPORT);
2052 acp->this_residual--;
2053 DATA_LEN++;
2054 SETPORT(DMACNTRL0, ENDMA);
2055 }
2056
2057 if (data_count > 1) {
2058 data_count >>= 1;
2059 insw(DATAPORT, acp->ptr, data_count);
2060 acp->ptr += 2 * data_count;
2061 acp->this_residual -= 2 * data_count;
2062 DATA_LEN += 2 * data_count;
2063 }
2064
2065 if (acp->this_residual == 0 &&
2066 !sg_is_last(acp->buffer)) {
2067 /* advance to next buffer */
2068 acp->buffer = sg_next(acp->buffer);
2069 acp->ptr = SG_ADDRESS(acp->buffer);
2070 acp->this_residual = acp->buffer->length;
2071 }
2072 }
2073 } else if (fifodata > 0) {
2074 scmd_printk(KERN_ERR, CURRENT_SC,
2075 "no buffers left for %d(%d) bytes"
2076 " (data overrun!?)\n",
2077 fifodata, GETPORT(FIFOSTAT));
2078 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2079 while(fifodata>0) {
2080 GETPORT(DATAPORT);
2081 fifodata--;
2082 DATA_LEN++;
2083 }
2084 SETPORT(DMACNTRL0, ENDMA|_8BIT);
2085 }
2086 }
2087
2088 if(TESTLO(DMASTAT, INTSTAT) ||
2089 TESTLO(DMASTAT, DFIFOEMP) ||
2090 TESTLO(SSTAT2, SEMPTY) ||
2091 GETPORT(FIFOSTAT)>0) {
2092 /*
2093 * something went wrong, if there's something left in the fifos
2094 * or the phase didn't change
2095 */
2096 scmd_printk(KERN_ERR, CURRENT_SC,
2097 "fifos should be empty and phase should have changed\n");
2098 }
2099
2100 if(DATA_LEN!=GETSTCNT()) {
2101 scmd_printk(KERN_ERR, CURRENT_SC,
2102 "manual transfer count differs from automatic "
2103 "(count=%d;stcnt=%d;diff=%d;fifostat=%d)",
2104 DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN,
2105 GETPORT(FIFOSTAT));
2106 mdelay(10000);
2107 }
2108}
2109
2110static void datai_end(struct Scsi_Host *shpnt)
2111{
2112 CMD_INC_RESID(CURRENT_SC, -GETSTCNT());
2113
2114 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2115 SETPORT(DMACNTRL0, 0);
2116}
2117
2118/*
2119 * data out phase
2120 *
2121 */
2122static void datao_init(struct Scsi_Host *shpnt)
2123{
2124 SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO);
2125 SETPORT(DMACNTRL0, WRITE_READ | ENDMA);
2126
2127 SETPORT(SXFRCTL0, CH1|CLRSTCNT);
2128 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);
2129
2130 SETPORT(SIMODE0, 0);
2131 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE );
2132
2133 DATA_LEN = scsi_get_resid(CURRENT_SC);
2134}
2135
2136static void datao_run(struct Scsi_Host *shpnt)
2137{
2138 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);
2139 unsigned long the_time;
2140 int data_count;
2141
2142 /* until phase changes or all data sent */
2143 while (TESTLO(DMASTAT, INTSTAT) && acp->this_residual > 0) {
2144 data_count = 128;
2145 if (data_count > acp->this_residual)
2146 data_count = acp->this_residual;
2147
2148 if(TESTLO(DMASTAT, DFIFOEMP)) {
2149 scmd_printk(KERN_ERR, CURRENT_SC,
2150 "datao fifo not empty (%d)",
2151 GETPORT(FIFOSTAT));
2152 break;
2153 }
2154
2155 if(data_count & 1) {
2156 SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT);
2157 SETPORT(DATAPORT, *acp->ptr++);
2158 acp->this_residual--;
2159 CMD_INC_RESID(CURRENT_SC, -1);
2160 SETPORT(DMACNTRL0,WRITE_READ|ENDMA);
2161 }
2162
2163 if(data_count > 1) {
2164 data_count >>= 1;
2165 outsw(DATAPORT, acp->ptr, data_count);
2166 acp->ptr += 2 * data_count;
2167 acp->this_residual -= 2 * data_count;
2168 CMD_INC_RESID(CURRENT_SC, -2 * data_count);
2169 }
2170
2171 if (acp->this_residual == 0 && !sg_is_last(acp->buffer)) {
2172 /* advance to next buffer */
2173 acp->buffer = sg_next(acp->buffer);
2174 acp->ptr = SG_ADDRESS(acp->buffer);
2175 acp->this_residual = acp->buffer->length;
2176 }
2177
2178 the_time=jiffies + 100*HZ;
2179 while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time))
2180 barrier();
2181
2182 if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) {
2183 scmd_printk(KERN_ERR, CURRENT_SC, "dataout timeout\n");
2184 break;
2185 }
2186 }
2187}
2188
2189static void datao_end(struct Scsi_Host *shpnt)
2190{
2191 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);
2192
2193 if(TESTLO(DMASTAT, DFIFOEMP)) {
2194 u32 datao_cnt = GETSTCNT();
2195 int datao_out = DATA_LEN - scsi_get_resid(CURRENT_SC);
2196 int done;
2197 struct scatterlist *sg = scsi_sglist(CURRENT_SC);
2198
2199 CMD_INC_RESID(CURRENT_SC, datao_out - datao_cnt);
2200
2201 done = scsi_bufflen(CURRENT_SC) - scsi_get_resid(CURRENT_SC);
2202 /* Locate the first SG entry not yet sent */
2203 while (done > 0 && !sg_is_last(sg)) {
2204 if (done < sg->length)
2205 break;
2206 done -= sg->length;
2207 sg = sg_next(sg);
2208 }
2209
2210 acp->buffer = sg;
2211 acp->ptr = SG_ADDRESS(acp->buffer) + done;
2212 acp->this_residual = acp->buffer->length - done;
2213 }
2214
2215 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
2216 SETPORT(SXFRCTL0, CH1);
2217
2218 SETPORT(DMACNTRL0, 0);
2219}
2220
2221/*
2222 * figure out what state we're in
2223 *
2224 */
2225static int update_state(struct Scsi_Host *shpnt)
2226{
2227 int dataphase=0;
2228 unsigned int stat0 = GETPORT(SSTAT0);
2229 unsigned int stat1 = GETPORT(SSTAT1);
2230
2231 PREVSTATE = STATE;
2232 STATE=unknown;
2233
2234 if(stat1 & SCSIRSTI) {
2235 STATE=rsti;
2236 SETPORT(SCSISEQ,0);
2237 SETPORT(SSTAT1,SCSIRSTI);
2238 } else if (stat0 & SELDI && PREVSTATE == busfree) {
2239 STATE=seldi;
2240 } else if (stat0 & SELDO && CURRENT_SC &&
2241 (aha152x_priv(CURRENT_SC)->phase & selecting)) {
2242 STATE=seldo;
2243 } else if(stat1 & SELTO) {
2244 STATE=selto;
2245 } else if(stat1 & BUSFREE) {
2246 STATE=busfree;
2247 SETPORT(SSTAT1,BUSFREE);
2248 } else if(stat1 & SCSIPERR) {
2249 STATE=parerr;
2250 SETPORT(SSTAT1,SCSIPERR);
2251 } else if(stat1 & REQINIT) {
2252 switch(GETPORT(SCSISIG) & P_MASK) {
2253 case P_MSGI: STATE=msgi; break;
2254 case P_MSGO: STATE=msgo; break;
2255 case P_DATAO: STATE=datao; break;
2256 case P_DATAI: STATE=datai; break;
2257 case P_STATUS: STATE=status; break;
2258 case P_CMD: STATE=cmd; break;
2259 }
2260 dataphase=1;
2261 }
2262
2263 if((stat0 & SELDI) && STATE!=seldi && !dataphase) {
2264 scmd_printk(KERN_INFO, CURRENT_SC, "reselection missed?");
2265 }
2266
2267 if(STATE!=PREVSTATE) {
2268 LASTSTATE=PREVSTATE;
2269 }
2270
2271 return dataphase;
2272}
2273
2274/*
2275 * handle parity error
2276 *
2277 * FIXME: in which phase?
2278 *
2279 */
2280static void parerr_run(struct Scsi_Host *shpnt)
2281{
2282 scmd_printk(KERN_ERR, CURRENT_SC, "parity error\n");
2283 done(shpnt, SAM_STAT_GOOD, DID_PARITY);
2284}
2285
2286/*
2287 * handle reset in
2288 *
2289 */
2290static void rsti_run(struct Scsi_Host *shpnt)
2291{
2292 struct scsi_cmnd *ptr;
2293
2294 shost_printk(KERN_NOTICE, shpnt, "scsi reset in\n");
2295
2296 ptr=DISCONNECTED_SC;
2297 while(ptr) {
2298 struct scsi_cmnd *next = SCNEXT(ptr);
2299
2300 if (!ptr->device->soft_reset) {
2301 remove_SC(&DISCONNECTED_SC, ptr);
2302
2303 kfree(ptr->host_scribble);
2304 ptr->host_scribble=NULL;
2305
2306 set_host_byte(ptr, DID_RESET);
2307 aha152x_scsi_done(ptr);
2308 }
2309
2310 ptr = next;
2311 }
2312
2313 if(CURRENT_SC && !CURRENT_SC->device->soft_reset)
2314 done(shpnt, SAM_STAT_GOOD, DID_RESET);
2315}
2316
2317
2318/*
2319 * bottom-half handler
2320 *
2321 */
2322static void is_complete(struct Scsi_Host *shpnt)
2323{
2324 int dataphase;
2325 unsigned long flags;
2326 int pending;
2327
2328 if(!shpnt)
2329 return;
2330
2331 DO_LOCK(flags);
2332
2333 if( HOSTDATA(shpnt)->service==0 ) {
2334 DO_UNLOCK(flags);
2335 return;
2336 }
2337
2338 HOSTDATA(shpnt)->service = 0;
2339
2340 if(HOSTDATA(shpnt)->in_intr) {
2341 DO_UNLOCK(flags);
2342 /* aha152x_error never returns.. */
2343 aha152x_error(shpnt, "bottom-half already running!?");
2344 }
2345 HOSTDATA(shpnt)->in_intr++;
2346
2347 /*
2348 * loop while there are interrupt conditions pending
2349 *
2350 */
2351 do {
2352 unsigned long start = jiffies;
2353 DO_UNLOCK(flags);
2354
2355 dataphase=update_state(shpnt);
2356
2357 /*
2358 * end previous state
2359 *
2360 */
2361 if(PREVSTATE!=STATE && states[PREVSTATE].end)
2362 states[PREVSTATE].end(shpnt);
2363
2364 /*
2365 * disable SPIO mode if previous phase used it
2366 * and this one doesn't
2367 *
2368 */
2369 if(states[PREVSTATE].spio && !states[STATE].spio) {
2370 SETPORT(SXFRCTL0, CH1);
2371 SETPORT(DMACNTRL0, 0);
2372 if(CURRENT_SC)
2373 aha152x_priv(CURRENT_SC)->phase &= ~spiordy;
2374 }
2375
2376 /*
2377 * accept current dataphase phase
2378 *
2379 */
2380 if(dataphase) {
2381 SETPORT(SSTAT0, REQINIT);
2382 SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK);
2383 SETPORT(SSTAT1, PHASECHG);
2384 }
2385
2386 /*
2387 * enable SPIO mode if previous didn't use it
2388 * and this one does
2389 *
2390 */
2391 if(!states[PREVSTATE].spio && states[STATE].spio) {
2392 SETPORT(DMACNTRL0, 0);
2393 SETPORT(SXFRCTL0, CH1|SPIOEN);
2394 if(CURRENT_SC)
2395 aha152x_priv(CURRENT_SC)->phase |= spiordy;
2396 }
2397
2398 /*
2399 * initialize for new state
2400 *
2401 */
2402 if(PREVSTATE!=STATE && states[STATE].init)
2403 states[STATE].init(shpnt);
2404
2405 /*
2406 * handle current state
2407 *
2408 */
2409 if(states[STATE].run)
2410 states[STATE].run(shpnt);
2411 else
2412 scmd_printk(KERN_ERR, CURRENT_SC,
2413 "unexpected state (%x)\n", STATE);
2414
2415 /*
2416 * setup controller to interrupt on
2417 * the next expected condition and
2418 * loop if it's already there
2419 *
2420 */
2421 DO_LOCK(flags);
2422 pending=setup_expected_interrupts(shpnt);
2423#if defined(AHA152X_STAT)
2424 HOSTDATA(shpnt)->count[STATE]++;
2425 if(PREVSTATE!=STATE)
2426 HOSTDATA(shpnt)->count_trans[STATE]++;
2427 HOSTDATA(shpnt)->time[STATE] += jiffies-start;
2428#endif
2429
2430 } while(pending);
2431
2432 /*
2433 * enable interrupts and leave bottom-half
2434 *
2435 */
2436 HOSTDATA(shpnt)->in_intr--;
2437 SETBITS(DMACNTRL0, INTEN);
2438 DO_UNLOCK(flags);
2439}
2440
2441
2442/*
2443 * Dump the current driver status and panic
2444 */
2445static void aha152x_error(struct Scsi_Host *shpnt, char *msg)
2446{
2447 shost_printk(KERN_EMERG, shpnt, "%s\n", msg);
2448 show_queues(shpnt);
2449 panic("aha152x panic\n");
2450}
2451
2452/*
2453 * display enabled interrupts
2454 */
2455static void disp_enintr(struct Scsi_Host *shpnt)
2456{
2457 int s0, s1;
2458
2459 s0 = GETPORT(SIMODE0);
2460 s1 = GETPORT(SIMODE1);
2461
2462 shost_printk(KERN_DEBUG, shpnt,
2463 "enabled interrupts (%s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n",
2464 (s0 & ENSELDO) ? "ENSELDO " : "",
2465 (s0 & ENSELDI) ? "ENSELDI " : "",
2466 (s0 & ENSELINGO) ? "ENSELINGO " : "",
2467 (s0 & ENSWRAP) ? "ENSWRAP " : "",
2468 (s0 & ENSDONE) ? "ENSDONE " : "",
2469 (s0 & ENSPIORDY) ? "ENSPIORDY " : "",
2470 (s0 & ENDMADONE) ? "ENDMADONE " : "",
2471 (s1 & ENSELTIMO) ? "ENSELTIMO " : "",
2472 (s1 & ENATNTARG) ? "ENATNTARG " : "",
2473 (s1 & ENPHASEMIS) ? "ENPHASEMIS " : "",
2474 (s1 & ENBUSFREE) ? "ENBUSFREE " : "",
2475 (s1 & ENSCSIPERR) ? "ENSCSIPERR " : "",
2476 (s1 & ENPHASECHG) ? "ENPHASECHG " : "",
2477 (s1 & ENREQINIT) ? "ENREQINIT " : "");
2478}
2479
2480/*
2481 * Show the command data of a command
2482 */
2483static void show_command(struct scsi_cmnd *ptr)
2484{
2485 const int phase = aha152x_priv(ptr)->phase;
2486
2487 scsi_print_command(ptr);
2488 scmd_printk(KERN_DEBUG, ptr,
2489 "request_bufflen=%d; resid=%d; "
2490 "phase |%s%s%s%s%s%s%s%s%s; next=0x%p",
2491 scsi_bufflen(ptr), scsi_get_resid(ptr),
2492 phase & not_issued ? "not issued|" : "",
2493 phase & selecting ? "selecting|" : "",
2494 phase & identified ? "identified|" : "",
2495 phase & disconnected ? "disconnected|" : "",
2496 phase & completed ? "completed|" : "",
2497 phase & spiordy ? "spiordy|" : "",
2498 phase & syncneg ? "syncneg|" : "",
2499 phase & aborted ? "aborted|" : "",
2500 phase & resetted ? "resetted|" : "",
2501 SCDATA(ptr) ? SCNEXT(ptr) : NULL);
2502}
2503
2504/*
2505 * Dump the queued data
2506 */
2507static void show_queues(struct Scsi_Host *shpnt)
2508{
2509 struct scsi_cmnd *ptr;
2510 unsigned long flags;
2511
2512 DO_LOCK(flags);
2513 printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n");
2514 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
2515 show_command(ptr);
2516 DO_UNLOCK(flags);
2517
2518 printk(KERN_DEBUG "current_SC:\n");
2519 if (CURRENT_SC)
2520 show_command(CURRENT_SC);
2521 else
2522 printk(KERN_DEBUG "none\n");
2523
2524 printk(KERN_DEBUG "disconnected_SC:\n");
2525 for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL)
2526 show_command(ptr);
2527
2528 disp_enintr(shpnt);
2529}
2530
2531static void get_command(struct seq_file *m, struct scsi_cmnd * ptr)
2532{
2533 struct aha152x_cmd_priv *acp = aha152x_priv(ptr);
2534 const int phase = acp->phase;
2535 int i;
2536
2537 seq_printf(m, "%p: target=%d; lun=%d; cmnd=( ",
2538 ptr, ptr->device->id, (u8)ptr->device->lun);
2539
2540 for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++)
2541 seq_printf(m, "0x%02x ", ptr->cmnd[i]);
2542
2543 seq_printf(m, "); resid=%d; residual=%d; buffers=%d; phase |",
2544 scsi_get_resid(ptr), acp->this_residual,
2545 sg_nents(acp->buffer) - 1);
2546
2547 if (phase & not_issued)
2548 seq_puts(m, "not issued|");
2549 if (phase & selecting)
2550 seq_puts(m, "selecting|");
2551 if (phase & disconnected)
2552 seq_puts(m, "disconnected|");
2553 if (phase & aborted)
2554 seq_puts(m, "aborted|");
2555 if (phase & identified)
2556 seq_puts(m, "identified|");
2557 if (phase & completed)
2558 seq_puts(m, "completed|");
2559 if (phase & spiordy)
2560 seq_puts(m, "spiordy|");
2561 if (phase & syncneg)
2562 seq_puts(m, "syncneg|");
2563 seq_printf(m, "; next=0x%p\n", SCNEXT(ptr));
2564}
2565
2566static void get_ports(struct seq_file *m, struct Scsi_Host *shpnt)
2567{
2568 int s;
2569
2570 seq_printf(m, "\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name);
2571
2572 s = GETPORT(SCSISEQ);
2573 seq_puts(m, "SCSISEQ( ");
2574 if (s & TEMODEO)
2575 seq_puts(m, "TARGET MODE ");
2576 if (s & ENSELO)
2577 seq_puts(m, "SELO ");
2578 if (s & ENSELI)
2579 seq_puts(m, "SELI ");
2580 if (s & ENRESELI)
2581 seq_puts(m, "RESELI ");
2582 if (s & ENAUTOATNO)
2583 seq_puts(m, "AUTOATNO ");
2584 if (s & ENAUTOATNI)
2585 seq_puts(m, "AUTOATNI ");
2586 if (s & ENAUTOATNP)
2587 seq_puts(m, "AUTOATNP ");
2588 if (s & SCSIRSTO)
2589 seq_puts(m, "SCSIRSTO ");
2590 seq_puts(m, ");");
2591
2592 seq_puts(m, " SCSISIG(");
2593 s = GETPORT(SCSISIG);
2594 switch (s & P_MASK) {
2595 case P_DATAO:
2596 seq_puts(m, "DATA OUT");
2597 break;
2598 case P_DATAI:
2599 seq_puts(m, "DATA IN");
2600 break;
2601 case P_CMD:
2602 seq_puts(m, "COMMAND");
2603 break;
2604 case P_STATUS:
2605 seq_puts(m, "STATUS");
2606 break;
2607 case P_MSGO:
2608 seq_puts(m, "MESSAGE OUT");
2609 break;
2610 case P_MSGI:
2611 seq_puts(m, "MESSAGE IN");
2612 break;
2613 default:
2614 seq_puts(m, "*invalid*");
2615 break;
2616 }
2617
2618 seq_puts(m, "); ");
2619
2620 seq_printf(m, "INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");
2621
2622 seq_puts(m, "SSTAT( ");
2623 s = GETPORT(SSTAT0);
2624 if (s & TARGET)
2625 seq_puts(m, "TARGET ");
2626 if (s & SELDO)
2627 seq_puts(m, "SELDO ");
2628 if (s & SELDI)
2629 seq_puts(m, "SELDI ");
2630 if (s & SELINGO)
2631 seq_puts(m, "SELINGO ");
2632 if (s & SWRAP)
2633 seq_puts(m, "SWRAP ");
2634 if (s & SDONE)
2635 seq_puts(m, "SDONE ");
2636 if (s & SPIORDY)
2637 seq_puts(m, "SPIORDY ");
2638 if (s & DMADONE)
2639 seq_puts(m, "DMADONE ");
2640
2641 s = GETPORT(SSTAT1);
2642 if (s & SELTO)
2643 seq_puts(m, "SELTO ");
2644 if (s & ATNTARG)
2645 seq_puts(m, "ATNTARG ");
2646 if (s & SCSIRSTI)
2647 seq_puts(m, "SCSIRSTI ");
2648 if (s & PHASEMIS)
2649 seq_puts(m, "PHASEMIS ");
2650 if (s & BUSFREE)
2651 seq_puts(m, "BUSFREE ");
2652 if (s & SCSIPERR)
2653 seq_puts(m, "SCSIPERR ");
2654 if (s & PHASECHG)
2655 seq_puts(m, "PHASECHG ");
2656 if (s & REQINIT)
2657 seq_puts(m, "REQINIT ");
2658 seq_puts(m, "); ");
2659
2660
2661 seq_puts(m, "SSTAT( ");
2662
2663 s = GETPORT(SSTAT0) & GETPORT(SIMODE0);
2664
2665 if (s & TARGET)
2666 seq_puts(m, "TARGET ");
2667 if (s & SELDO)
2668 seq_puts(m, "SELDO ");
2669 if (s & SELDI)
2670 seq_puts(m, "SELDI ");
2671 if (s & SELINGO)
2672 seq_puts(m, "SELINGO ");
2673 if (s & SWRAP)
2674 seq_puts(m, "SWRAP ");
2675 if (s & SDONE)
2676 seq_puts(m, "SDONE ");
2677 if (s & SPIORDY)
2678 seq_puts(m, "SPIORDY ");
2679 if (s & DMADONE)
2680 seq_puts(m, "DMADONE ");
2681
2682 s = GETPORT(SSTAT1) & GETPORT(SIMODE1);
2683
2684 if (s & SELTO)
2685 seq_puts(m, "SELTO ");
2686 if (s & ATNTARG)
2687 seq_puts(m, "ATNTARG ");
2688 if (s & SCSIRSTI)
2689 seq_puts(m, "SCSIRSTI ");
2690 if (s & PHASEMIS)
2691 seq_puts(m, "PHASEMIS ");
2692 if (s & BUSFREE)
2693 seq_puts(m, "BUSFREE ");
2694 if (s & SCSIPERR)
2695 seq_puts(m, "SCSIPERR ");
2696 if (s & PHASECHG)
2697 seq_puts(m, "PHASECHG ");
2698 if (s & REQINIT)
2699 seq_puts(m, "REQINIT ");
2700 seq_puts(m, "); ");
2701
2702 seq_puts(m, "SXFRCTL0( ");
2703
2704 s = GETPORT(SXFRCTL0);
2705 if (s & SCSIEN)
2706 seq_puts(m, "SCSIEN ");
2707 if (s & DMAEN)
2708 seq_puts(m, "DMAEN ");
2709 if (s & CH1)
2710 seq_puts(m, "CH1 ");
2711 if (s & CLRSTCNT)
2712 seq_puts(m, "CLRSTCNT ");
2713 if (s & SPIOEN)
2714 seq_puts(m, "SPIOEN ");
2715 if (s & CLRCH1)
2716 seq_puts(m, "CLRCH1 ");
2717 seq_puts(m, "); ");
2718
2719 seq_puts(m, "SIGNAL( ");
2720
2721 s = GETPORT(SCSISIG);
2722 if (s & SIG_ATNI)
2723 seq_puts(m, "ATNI ");
2724 if (s & SIG_SELI)
2725 seq_puts(m, "SELI ");
2726 if (s & SIG_BSYI)
2727 seq_puts(m, "BSYI ");
2728 if (s & SIG_REQI)
2729 seq_puts(m, "REQI ");
2730 if (s & SIG_ACKI)
2731 seq_puts(m, "ACKI ");
2732 seq_puts(m, "); ");
2733
2734 seq_printf(m, "SELID(%02x), ", GETPORT(SELID));
2735
2736 seq_printf(m, "STCNT(%d), ", GETSTCNT());
2737
2738 seq_puts(m, "SSTAT2( ");
2739
2740 s = GETPORT(SSTAT2);
2741 if (s & SOFFSET)
2742 seq_puts(m, "SOFFSET ");
2743 if (s & SEMPTY)
2744 seq_puts(m, "SEMPTY ");
2745 if (s & SFULL)
2746 seq_puts(m, "SFULL ");
2747 seq_printf(m, "); SFCNT (%d); ", s & (SFULL | SFCNT));
2748
2749 s = GETPORT(SSTAT3);
2750 seq_printf(m, "SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);
2751
2752 seq_puts(m, "SSTAT4( ");
2753 s = GETPORT(SSTAT4);
2754 if (s & SYNCERR)
2755 seq_puts(m, "SYNCERR ");
2756 if (s & FWERR)
2757 seq_puts(m, "FWERR ");
2758 if (s & FRERR)
2759 seq_puts(m, "FRERR ");
2760 seq_puts(m, "); ");
2761
2762 seq_puts(m, "DMACNTRL0( ");
2763 s = GETPORT(DMACNTRL0);
2764 seq_printf(m, "%s ", s & _8BIT ? "8BIT" : "16BIT");
2765 seq_printf(m, "%s ", s & DMA ? "DMA" : "PIO");
2766 seq_printf(m, "%s ", s & WRITE_READ ? "WRITE" : "READ");
2767 if (s & ENDMA)
2768 seq_puts(m, "ENDMA ");
2769 if (s & INTEN)
2770 seq_puts(m, "INTEN ");
2771 if (s & RSTFIFO)
2772 seq_puts(m, "RSTFIFO ");
2773 if (s & SWINT)
2774 seq_puts(m, "SWINT ");
2775 seq_puts(m, "); ");
2776
2777 seq_puts(m, "DMASTAT( ");
2778 s = GETPORT(DMASTAT);
2779 if (s & ATDONE)
2780 seq_puts(m, "ATDONE ");
2781 if (s & WORDRDY)
2782 seq_puts(m, "WORDRDY ");
2783 if (s & DFIFOFULL)
2784 seq_puts(m, "DFIFOFULL ");
2785 if (s & DFIFOEMP)
2786 seq_puts(m, "DFIFOEMP ");
2787 seq_puts(m, ")\n");
2788
2789 seq_puts(m, "enabled interrupts( ");
2790
2791 s = GETPORT(SIMODE0);
2792 if (s & ENSELDO)
2793 seq_puts(m, "ENSELDO ");
2794 if (s & ENSELDI)
2795 seq_puts(m, "ENSELDI ");
2796 if (s & ENSELINGO)
2797 seq_puts(m, "ENSELINGO ");
2798 if (s & ENSWRAP)
2799 seq_puts(m, "ENSWRAP ");
2800 if (s & ENSDONE)
2801 seq_puts(m, "ENSDONE ");
2802 if (s & ENSPIORDY)
2803 seq_puts(m, "ENSPIORDY ");
2804 if (s & ENDMADONE)
2805 seq_puts(m, "ENDMADONE ");
2806
2807 s = GETPORT(SIMODE1);
2808 if (s & ENSELTIMO)
2809 seq_puts(m, "ENSELTIMO ");
2810 if (s & ENATNTARG)
2811 seq_puts(m, "ENATNTARG ");
2812 if (s & ENPHASEMIS)
2813 seq_puts(m, "ENPHASEMIS ");
2814 if (s & ENBUSFREE)
2815 seq_puts(m, "ENBUSFREE ");
2816 if (s & ENSCSIPERR)
2817 seq_puts(m, "ENSCSIPERR ");
2818 if (s & ENPHASECHG)
2819 seq_puts(m, "ENPHASECHG ");
2820 if (s & ENREQINIT)
2821 seq_puts(m, "ENREQINIT ");
2822 seq_puts(m, ")\n");
2823}
2824
2825static int aha152x_set_info(struct Scsi_Host *shpnt, char *buffer, int length)
2826{
2827 if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0)
2828 return -EINVAL;
2829
2830#if defined(AHA152X_STAT)
2831 if(length>13 && strncmp("reset", buffer+8, 5)==0) {
2832 int i;
2833
2834 HOSTDATA(shpnt)->total_commands=0;
2835 HOSTDATA(shpnt)->disconnections=0;
2836 HOSTDATA(shpnt)->busfree_without_any_action=0;
2837 HOSTDATA(shpnt)->busfree_without_old_command=0;
2838 HOSTDATA(shpnt)->busfree_without_new_command=0;
2839 HOSTDATA(shpnt)->busfree_without_done_command=0;
2840 HOSTDATA(shpnt)->busfree_with_check_condition=0;
2841 for (i = idle; i<maxstate; i++) {
2842 HOSTDATA(shpnt)->count[i]=0;
2843 HOSTDATA(shpnt)->count_trans[i]=0;
2844 HOSTDATA(shpnt)->time[i]=0;
2845 }
2846
2847 shost_printk(KERN_INFO, shpnt, "aha152x: stats reset.\n");
2848
2849 } else
2850#endif
2851 {
2852 return -EINVAL;
2853 }
2854
2855
2856 return length;
2857}
2858
2859static int aha152x_show_info(struct seq_file *m, struct Scsi_Host *shpnt)
2860{
2861 int i;
2862 struct scsi_cmnd *ptr;
2863 unsigned long flags;
2864
2865 seq_puts(m, AHA152X_REVID "\n");
2866
2867 seq_printf(m, "ioports 0x%04lx to 0x%04lx\n",
2868 shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1);
2869 seq_printf(m, "interrupt 0x%02x\n", shpnt->irq);
2870 seq_printf(m, "disconnection/reconnection %s\n",
2871 RECONNECT ? "enabled" : "disabled");
2872 seq_printf(m, "parity checking %s\n",
2873 PARITY ? "enabled" : "disabled");
2874 seq_printf(m, "synchronous transfers %s\n",
2875 SYNCHRONOUS ? "enabled" : "disabled");
2876 seq_printf(m, "%d commands currently queued\n", HOSTDATA(shpnt)->commands);
2877
2878 if(SYNCHRONOUS) {
2879 seq_puts(m, "synchronously operating targets (tick=50 ns):\n");
2880 for (i = 0; i < 8; i++)
2881 if (HOSTDATA(shpnt)->syncrate[i] & 0x7f)
2882 seq_printf(m, "target %d: period %dT/%dns; req/ack offset %d\n",
2883 i,
2884 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2),
2885 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50,
2886 HOSTDATA(shpnt)->syncrate[i] & 0x0f);
2887 }
2888 seq_puts(m, "\nqueue status:\n");
2889 DO_LOCK(flags);
2890 if (ISSUE_SC) {
2891 seq_puts(m, "not yet issued commands:\n");
2892 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))
2893 get_command(m, ptr);
2894 } else
2895 seq_puts(m, "no not yet issued commands\n");
2896 DO_UNLOCK(flags);
2897
2898 if (CURRENT_SC) {
2899 seq_puts(m, "current command:\n");
2900 get_command(m, CURRENT_SC);
2901 } else
2902 seq_puts(m, "no current command\n");
2903
2904 if (DISCONNECTED_SC) {
2905 seq_puts(m, "disconnected commands:\n");
2906 for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr))
2907 get_command(m, ptr);
2908 } else
2909 seq_puts(m, "no disconnected commands\n");
2910
2911 get_ports(m, shpnt);
2912
2913#if defined(AHA152X_STAT)
2914 seq_printf(m, "statistics:\n"
2915 "total commands: %d\n"
2916 "disconnections: %d\n"
2917 "busfree with check condition: %d\n"
2918 "busfree without old command: %d\n"
2919 "busfree without new command: %d\n"
2920 "busfree without done command: %d\n"
2921 "busfree without any action: %d\n"
2922 "state "
2923 "transitions "
2924 "count "
2925 "time\n",
2926 HOSTDATA(shpnt)->total_commands,
2927 HOSTDATA(shpnt)->disconnections,
2928 HOSTDATA(shpnt)->busfree_with_check_condition,
2929 HOSTDATA(shpnt)->busfree_without_old_command,
2930 HOSTDATA(shpnt)->busfree_without_new_command,
2931 HOSTDATA(shpnt)->busfree_without_done_command,
2932 HOSTDATA(shpnt)->busfree_without_any_action);
2933 for(i=0; i<maxstate; i++) {
2934 seq_printf(m, "%-10s %-12d %-12d %-12ld\n",
2935 states[i].name,
2936 HOSTDATA(shpnt)->count_trans[i],
2937 HOSTDATA(shpnt)->count[i],
2938 HOSTDATA(shpnt)->time[i]);
2939 }
2940#endif
2941 return 0;
2942}
2943
2944static const struct scsi_host_template aha152x_driver_template = {
2945 .module = THIS_MODULE,
2946 .name = AHA152X_REVID,
2947 .proc_name = "aha152x",
2948 .show_info = aha152x_show_info,
2949 .write_info = aha152x_set_info,
2950 .queuecommand = aha152x_queue,
2951 .eh_abort_handler = aha152x_abort,
2952 .eh_device_reset_handler = aha152x_device_reset,
2953 .eh_bus_reset_handler = aha152x_bus_reset,
2954 .bios_param = aha152x_biosparam,
2955 .can_queue = 1,
2956 .this_id = 7,
2957 .sg_tablesize = SG_ALL,
2958 .dma_boundary = PAGE_SIZE - 1,
2959 .cmd_size = sizeof(struct aha152x_cmd_priv),
2960};
2961
2962#if !defined(AHA152X_PCMCIA)
2963static int setup_count;
2964static struct aha152x_setup setup[2];
2965
2966/* possible i/o addresses for the AIC-6260; default first */
2967static unsigned short ports[] = { 0x340, 0x140 };
2968
2969#if !defined(SKIP_BIOSTEST)
2970/* possible locations for the Adaptec BIOS; defaults first */
2971static unsigned int addresses[] =
2972{
2973 0xdc000, /* default first */
2974 0xc8000,
2975 0xcc000,
2976 0xd0000,
2977 0xd4000,
2978 0xd8000,
2979 0xe0000,
2980 0xeb800, /* VTech Platinum SMP */
2981 0xf0000,
2982};
2983
2984/* signatures for various AIC-6[23]60 based controllers.
2985 The point in detecting signatures is to avoid useless and maybe
2986 harmful probes on ports. I'm not sure that all listed boards pass
2987 auto-configuration. For those which fail the BIOS signature is
2988 obsolete, because user intervention to supply the configuration is
2989 needed anyway. May be an information whether or not the BIOS supports
2990 extended translation could be also useful here. */
2991static struct signature {
2992 unsigned char *signature;
2993 int sig_offset;
2994 int sig_length;
2995} signatures[] =
2996{
2997 { "Adaptec AHA-1520 BIOS", 0x102e, 21 },
2998 /* Adaptec 152x */
2999 { "Adaptec AHA-1520B", 0x000b, 17 },
3000 /* Adaptec 152x rev B */
3001 { "Adaptec AHA-1520B", 0x0026, 17 },
3002 /* Iomega Jaz Jet ISA (AIC6370Q) */
3003 { "Adaptec ASW-B626 BIOS", 0x1029, 21 },
3004 /* on-board controller */
3005 { "Adaptec BIOS: ASW-B626", 0x000f, 22 },
3006 /* on-board controller */
3007 { "Adaptec ASW-B626 S2", 0x2e6c, 19 },
3008 /* on-board controller */
3009 { "Adaptec BIOS:AIC-6360", 0x000c, 21 },
3010 /* on-board controller */
3011 { "ScsiPro SP-360 BIOS", 0x2873, 19 },
3012 /* ScsiPro-Controller */
3013 { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 },
3014 /* Gigabyte Local-Bus-SCSI */
3015 { "Adaptec BIOS:AVA-282X", 0x000c, 21 },
3016 /* Adaptec 282x */
3017 { "Adaptec IBM Dock II SCSI", 0x2edd, 24 },
3018 /* IBM Thinkpad Dock II */
3019 { "Adaptec BIOS:AHA-1532P", 0x001c, 22 },
3020 /* IBM Thinkpad Dock II SCSI */
3021 { "DTC3520A Host Adapter BIOS", 0x318a, 26 },
3022 /* DTC 3520A ISA SCSI */
3023};
3024#endif /* !SKIP_BIOSTEST */
3025
3026/*
3027 * Test, if port_base is valid.
3028 *
3029 */
3030static int aha152x_porttest(int io_port)
3031{
3032 int i;
3033
3034 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */
3035 for (i = 0; i < 16; i++)
3036 SETPORT(io_port + O_STACK, i);
3037
3038 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */
3039 for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++)
3040 ;
3041
3042 return (i == 16);
3043}
3044
3045static int tc1550_porttest(int io_port)
3046{
3047 int i;
3048
3049 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */
3050 for (i = 0; i < 16; i++)
3051 SETPORT(io_port + O_STACK, i);
3052
3053 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */
3054 for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++)
3055 ;
3056
3057 return (i == 16);
3058}
3059
3060
3061static int checksetup(struct aha152x_setup *setup)
3062{
3063 int i;
3064 for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++)
3065 ;
3066
3067 if (i == ARRAY_SIZE(ports))
3068 return 0;
3069
3070 if (!request_region(setup->io_port, IO_RANGE, "aha152x")) {
3071 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port);
3072 return 0;
3073 }
3074
3075 if( aha152x_porttest(setup->io_port) ) {
3076 setup->tc1550=0;
3077 } else if( tc1550_porttest(setup->io_port) ) {
3078 setup->tc1550=1;
3079 } else {
3080 release_region(setup->io_port, IO_RANGE);
3081 return 0;
3082 }
3083
3084 release_region(setup->io_port, IO_RANGE);
3085
3086 if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX))
3087 return 0;
3088
3089 if ((setup->scsiid < 0) || (setup->scsiid > 7))
3090 return 0;
3091
3092 if ((setup->reconnect < 0) || (setup->reconnect > 1))
3093 return 0;
3094
3095 if ((setup->parity < 0) || (setup->parity > 1))
3096 return 0;
3097
3098 if ((setup->synchronous < 0) || (setup->synchronous > 1))
3099 return 0;
3100
3101 if ((setup->ext_trans < 0) || (setup->ext_trans > 1))
3102 return 0;
3103
3104
3105 return 1;
3106}
3107
3108
3109static int __init aha152x_init(void)
3110{
3111 int i, j, ok;
3112#if defined(AUTOCONF)
3113 aha152x_config conf;
3114#endif
3115#ifdef __ISAPNP__
3116 struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL};
3117#endif
3118
3119 if ( setup_count ) {
3120 printk(KERN_INFO "aha152x: processing commandline: ");
3121
3122 for (i = 0; i<setup_count; i++) {
3123 if (!checksetup(&setup[i])) {
3124 printk(KERN_ERR "\naha152x: %s\n", setup[i].conf);
3125 printk(KERN_ERR "aha152x: invalid line\n");
3126 }
3127 }
3128 printk("ok\n");
3129 }
3130
3131#if defined(SETUP0)
3132 if (setup_count < ARRAY_SIZE(setup)) {
3133 struct aha152x_setup override = SETUP0;
3134
3135 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3136 if (!checksetup(&override)) {
3137 printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3138 override.io_port,
3139 override.irq,
3140 override.scsiid,
3141 override.reconnect,
3142 override.parity,
3143 override.synchronous,
3144 override.delay,
3145 override.ext_trans);
3146 } else
3147 setup[setup_count++] = override;
3148 }
3149 }
3150#endif
3151
3152#if defined(SETUP1)
3153 if (setup_count < ARRAY_SIZE(setup)) {
3154 struct aha152x_setup override = SETUP1;
3155
3156 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {
3157 if (!checksetup(&override)) {
3158 printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",
3159 override.io_port,
3160 override.irq,
3161 override.scsiid,
3162 override.reconnect,
3163 override.parity,
3164 override.synchronous,
3165 override.delay,
3166 override.ext_trans);
3167 } else
3168 setup[setup_count++] = override;
3169 }
3170 }
3171#endif
3172
3173#if defined(MODULE)
3174 if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) {
3175 if(aha152x[0]!=0) {
3176 setup[setup_count].conf = "";
3177 setup[setup_count].io_port = aha152x[0];
3178 setup[setup_count].irq = aha152x[1];
3179 setup[setup_count].scsiid = aha152x[2];
3180 setup[setup_count].reconnect = aha152x[3];
3181 setup[setup_count].parity = aha152x[4];
3182 setup[setup_count].synchronous = aha152x[5];
3183 setup[setup_count].delay = aha152x[6];
3184 setup[setup_count].ext_trans = aha152x[7];
3185 } else if (io[0] != 0 || irq[0] != 0) {
3186 if(io[0]!=0) setup[setup_count].io_port = io[0];
3187 if(irq[0]!=0) setup[setup_count].irq = irq[0];
3188
3189 setup[setup_count].scsiid = scsiid[0];
3190 setup[setup_count].reconnect = reconnect[0];
3191 setup[setup_count].parity = parity[0];
3192 setup[setup_count].synchronous = sync[0];
3193 setup[setup_count].delay = delay[0];
3194 setup[setup_count].ext_trans = exttrans[0];
3195 }
3196
3197 if (checksetup(&setup[setup_count]))
3198 setup_count++;
3199 else
3200 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",
3201 setup[setup_count].io_port,
3202 setup[setup_count].irq,
3203 setup[setup_count].scsiid,
3204 setup[setup_count].reconnect,
3205 setup[setup_count].parity,
3206 setup[setup_count].synchronous,
3207 setup[setup_count].delay,
3208 setup[setup_count].ext_trans);
3209 }
3210
3211 if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) {
3212 if(aha152x1[0]!=0) {
3213 setup[setup_count].conf = "";
3214 setup[setup_count].io_port = aha152x1[0];
3215 setup[setup_count].irq = aha152x1[1];
3216 setup[setup_count].scsiid = aha152x1[2];
3217 setup[setup_count].reconnect = aha152x1[3];
3218 setup[setup_count].parity = aha152x1[4];
3219 setup[setup_count].synchronous = aha152x1[5];
3220 setup[setup_count].delay = aha152x1[6];
3221 setup[setup_count].ext_trans = aha152x1[7];
3222 } else if (io[1] != 0 || irq[1] != 0) {
3223 if(io[1]!=0) setup[setup_count].io_port = io[1];
3224 if(irq[1]!=0) setup[setup_count].irq = irq[1];
3225
3226 setup[setup_count].scsiid = scsiid[1];
3227 setup[setup_count].reconnect = reconnect[1];
3228 setup[setup_count].parity = parity[1];
3229 setup[setup_count].synchronous = sync[1];
3230 setup[setup_count].delay = delay[1];
3231 setup[setup_count].ext_trans = exttrans[1];
3232 }
3233 if (checksetup(&setup[setup_count]))
3234 setup_count++;
3235 else
3236 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",
3237 setup[setup_count].io_port,
3238 setup[setup_count].irq,
3239 setup[setup_count].scsiid,
3240 setup[setup_count].reconnect,
3241 setup[setup_count].parity,
3242 setup[setup_count].synchronous,
3243 setup[setup_count].delay,
3244 setup[setup_count].ext_trans);
3245 }
3246#endif
3247
3248#ifdef __ISAPNP__
3249 for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) {
3250 while ( setup_count<ARRAY_SIZE(setup) &&
3251 (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) {
3252 if (pnp_device_attach(dev) < 0)
3253 continue;
3254
3255 if (pnp_activate_dev(dev) < 0) {
3256 pnp_device_detach(dev);
3257 continue;
3258 }
3259
3260 if (!pnp_port_valid(dev, 0)) {
3261 pnp_device_detach(dev);
3262 continue;
3263 }
3264
3265 if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) {
3266 pnp_device_detach(dev);
3267 continue;
3268 }
3269
3270 setup[setup_count].io_port = pnp_port_start(dev, 0);
3271 setup[setup_count].irq = pnp_irq(dev, 0);
3272 setup[setup_count].scsiid = 7;
3273 setup[setup_count].reconnect = 1;
3274 setup[setup_count].parity = 1;
3275 setup[setup_count].synchronous = 1;
3276 setup[setup_count].delay = DELAY_DEFAULT;
3277 setup[setup_count].ext_trans = 0;
3278#if defined(__ISAPNP__)
3279 pnpdev[setup_count] = dev;
3280#endif
3281 printk (KERN_INFO
3282 "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n",
3283 setup[setup_count].io_port, setup[setup_count].irq);
3284 setup_count++;
3285 }
3286 }
3287#endif
3288
3289#if defined(AUTOCONF)
3290 if (setup_count<ARRAY_SIZE(setup)) {
3291#if !defined(SKIP_BIOSTEST)
3292 ok = 0;
3293 for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) {
3294 void __iomem *p = ioremap(addresses[i], 0x4000);
3295 if (!p)
3296 continue;
3297 for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++)
3298 ok = check_signature(p + signatures[j].sig_offset,
3299 signatures[j].signature, signatures[j].sig_length);
3300 iounmap(p);
3301 }
3302 if (!ok && setup_count == 0)
3303 return -ENODEV;
3304
3305 printk(KERN_INFO "aha152x: BIOS test: passed, ");
3306#else
3307 printk(KERN_INFO "aha152x: ");
3308#endif /* !SKIP_BIOSTEST */
3309
3310 ok = 0;
3311 for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) {
3312 if ((setup_count == 1) && (setup[0].io_port == ports[i]))
3313 continue;
3314
3315 if (!request_region(ports[i], IO_RANGE, "aha152x")) {
3316 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]);
3317 continue;
3318 }
3319
3320 if (aha152x_porttest(ports[i])) {
3321 setup[setup_count].tc1550 = 0;
3322
3323 conf.cf_port =
3324 (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB);
3325 } else if (tc1550_porttest(ports[i])) {
3326 setup[setup_count].tc1550 = 1;
3327
3328 conf.cf_port =
3329 (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB);
3330 } else {
3331 release_region(ports[i], IO_RANGE);
3332 continue;
3333 }
3334
3335 release_region(ports[i], IO_RANGE);
3336
3337 ok++;
3338 setup[setup_count].io_port = ports[i];
3339 setup[setup_count].irq = IRQ_MIN + conf.cf_irq;
3340 setup[setup_count].scsiid = conf.cf_id;
3341 setup[setup_count].reconnect = conf.cf_tardisc;
3342 setup[setup_count].parity = !conf.cf_parity;
3343 setup[setup_count].synchronous = conf.cf_syncneg;
3344 setup[setup_count].delay = DELAY_DEFAULT;
3345 setup[setup_count].ext_trans = 0;
3346 setup_count++;
3347
3348 }
3349
3350 if (ok)
3351 printk("auto configuration: ok, ");
3352 }
3353#endif
3354
3355 printk("%d controller(s) configured\n", setup_count);
3356
3357 for (i=0; i<setup_count; i++) {
3358 if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) {
3359 struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]);
3360
3361 if( !shpnt ) {
3362 release_region(setup[i].io_port, IO_RANGE);
3363#if defined(__ISAPNP__)
3364 } else if( pnpdev[i] ) {
3365 HOSTDATA(shpnt)->pnpdev=pnpdev[i];
3366 pnpdev[i]=NULL;
3367#endif
3368 }
3369 } else {
3370 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port);
3371 }
3372
3373#if defined(__ISAPNP__)
3374 if( pnpdev[i] )
3375 pnp_device_detach(pnpdev[i]);
3376#endif
3377 }
3378
3379 return 0;
3380}
3381
3382static void __exit aha152x_exit(void)
3383{
3384 struct aha152x_hostdata *hd, *tmp;
3385
3386 list_for_each_entry_safe(hd, tmp, &aha152x_host_list, host_list) {
3387 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
3388
3389 aha152x_release(shost);
3390 }
3391}
3392
3393module_init(aha152x_init);
3394module_exit(aha152x_exit);
3395
3396#if !defined(MODULE)
3397static int __init aha152x_setup(char *str)
3398{
3399 int ints[10];
3400
3401 get_options(str, ARRAY_SIZE(ints), ints);
3402
3403 if(setup_count>=ARRAY_SIZE(setup)) {
3404 printk(KERN_ERR "aha152x: you can only configure up to two controllers\n");
3405 return 1;
3406 }
3407
3408 setup[setup_count].conf = str;
3409 setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340;
3410 setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11;
3411 setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7;
3412 setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1;
3413 setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1;
3414 setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1;
3415 setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT;
3416 setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0;
3417 if (ints[0] > 8)
3418 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
3419 "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n");
3420 else
3421 setup_count++;
3422
3423 return 1;
3424}
3425__setup("aha152x=", aha152x_setup);
3426#endif
3427
3428#endif /* !AHA152X_PCMCIA */