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drm/rockchip: dw_hdmi_qp: Simplify clock handling
[drm/drm-misc.git] / drivers / scsi / aha152x.c
blob4276f868cd915937938b57d5e72ed22020172873
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
258 static 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
284 static inline void
285 CMD_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
304 enum {
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
319 struct 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
329 static struct aha152x_cmd_priv *aha152x_priv(struct scsi_cmnd *cmd)
330 {
331 return scsi_cmd_priv(cmd);
332 }
333
334 MODULE_AUTHOR("Jürgen Fischer");
335 MODULE_DESCRIPTION(AHA152X_REVID);
336 MODULE_LICENSE("GPL");
337
338 #if !defined(AHA152X_PCMCIA)
339 #if defined(MODULE)
340 static int io[] = {0, 0};
341 module_param_hw_array(io, int, ioport, NULL, 0);
342 MODULE_PARM_DESC(io,"base io address of controller");
343
344 static int irq[] = {0, 0};
345 module_param_hw_array(irq, int, irq, NULL, 0);
346 MODULE_PARM_DESC(irq,"interrupt for controller");
347
348 static int scsiid[] = {7, 7};
349 module_param_array(scsiid, int, NULL, 0);
350 MODULE_PARM_DESC(scsiid,"scsi id of controller");
351
352 static int reconnect[] = {1, 1};
353 module_param_array(reconnect, int, NULL, 0);
354 MODULE_PARM_DESC(reconnect,"allow targets to disconnect");
355
356 static int parity[] = {1, 1};
357 module_param_array(parity, int, NULL, 0);
358 MODULE_PARM_DESC(parity,"use scsi parity");
359
360 static int sync[] = {1, 1};
361 module_param_array(sync, int, NULL, 0);
362 MODULE_PARM_DESC(sync,"use synchronous transfers");
363
364 static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT};
365 module_param_array(delay, int, NULL, 0);
366 MODULE_PARM_DESC(delay,"scsi reset delay");
367
368 static int exttrans[] = {0, 0};
369 module_param_array(exttrans, int, NULL, 0);
370 MODULE_PARM_DESC(exttrans,"use extended translation");
371
372 static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
373 module_param_array(aha152x, int, NULL, 0);
374 MODULE_PARM_DESC(aha152x, "parameters for first controller");
375
376 static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
377 module_param_array(aha152x1, int, NULL, 0);
378 MODULE_PARM_DESC(aha152x1, "parameters for second controller");
379 #endif /* MODULE */
380
381 #ifdef __ISAPNP__
382 static 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 };
398 MODULE_DEVICE_TABLE(isapnp, id_table);
399 #endif /* ISAPNP */
400
401 #endif /* !AHA152X_PCMCIA */
402
403 static const struct scsi_host_template aha152x_driver_template;
404
405 /*
406 * internal states of the host
407 *
408 */
409 enum 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 */
431 struct 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 */
519 struct 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 */
578 static void seldi_run(struct Scsi_Host *shpnt);
579 static void seldo_run(struct Scsi_Host *shpnt);
580 static void selto_run(struct Scsi_Host *shpnt);
581 static void busfree_run(struct Scsi_Host *shpnt);
582
583 static void msgo_init(struct Scsi_Host *shpnt);
584 static void msgo_run(struct Scsi_Host *shpnt);
585 static void msgo_end(struct Scsi_Host *shpnt);
586
587 static void cmd_init(struct Scsi_Host *shpnt);
588 static void cmd_run(struct Scsi_Host *shpnt);
589 static void cmd_end(struct Scsi_Host *shpnt);
590
591 static void datai_init(struct Scsi_Host *shpnt);
592 static void datai_run(struct Scsi_Host *shpnt);
593 static void datai_end(struct Scsi_Host *shpnt);
594
595 static void datao_init(struct Scsi_Host *shpnt);
596 static void datao_run(struct Scsi_Host *shpnt);
597 static void datao_end(struct Scsi_Host *shpnt);
598
599 static void status_run(struct Scsi_Host *shpnt);
600
601 static void msgi_run(struct Scsi_Host *shpnt);
602 static void msgi_end(struct Scsi_Host *shpnt);
603
604 static void parerr_run(struct Scsi_Host *shpnt);
605 static void rsti_run(struct Scsi_Host *shpnt);
606
607 static void is_complete(struct Scsi_Host *shpnt);
608
609 /*
610 * driver states
611 *
612 */
613 static 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 */
637 static irqreturn_t intr(int irq, void *dev_id);
638 static void reset_ports(struct Scsi_Host *shpnt);
639 static void aha152x_error(struct Scsi_Host *shpnt, char *msg);
640 static void done(struct Scsi_Host *shpnt, unsigned char status_byte,
641 unsigned char host_byte);
642
643 /* diagnostics */
644 static void show_command(struct scsi_cmnd * ptr);
645 static void show_queues(struct Scsi_Host *shpnt);
646 static void disp_enintr(struct Scsi_Host *shpnt);
647
648
649 /*
650 * queue services:
651 *
652 */
653 static 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
667 static 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
679 static 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
701 static 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
723 static 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
733 struct 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
859 out_host_put:
860 list_del(&HOSTDATA(shpnt)->host_list);
861 scsi_host_put(shpnt);
862
863 return NULL;
864 }
865
866 void 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 */
895 static 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 */
928 static 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 */
999 static int aha152x_queue_lck(struct scsi_cmnd *SCpnt)
1000 {
1001 return aha152x_internal_queue(SCpnt, NULL, 0);
1002 }
1003
1004 static DEF_SCSI_QCMD(aha152x_queue)
1005
1006
1007 /*
1008 *
1009 */
1010 static 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
1019 static 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 */
1031 static 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 */
1072 static 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
1130 static 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 */
1165 static 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 */
1192 static 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 */
1201 static 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 */
1238 int 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 */
1250 static 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 */
1301 static 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
1318 static struct work_struct aha152x_tq;
1319
1320 /*
1321 * Run service completions on the card with interrupts enabled.
1322 *
1323 */
1324 static 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 */
1339 static 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 */
1388 static 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 */
1538 static 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 */
1579 static 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 */
1608 static 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 */
1676 static 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
1853 static 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 */
1868 static 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 */
1887 static 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
1914 static 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 */
1935 static 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 */
1951 static 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
1961 static 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 */
1975 static 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 */
1988 static 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
2002 static 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
2110 static 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 */
2122 static 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
2136 static 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
2189 static 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 */
2225 static 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 */
2280 static 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 */
2290 static 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 */
2322 static 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 */
2445 static 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 */
2455 static 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 */
2483 static 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 */
2507 static 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
2531 static 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
2566 static 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
2825 static 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
2859 static 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
2944 static 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)
2963 static int setup_count;
2964 static struct aha152x_setup setup[2];
2965
2966 /* possible i/o addresses for the AIC-6260; default first */
2967 static unsigned short ports[] = { 0x340, 0x140 };
2968
2969 #if !defined(SKIP_BIOSTEST)
2970 /* possible locations for the Adaptec BIOS; defaults first */
2971 static 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. */
2991 static 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 */
3030 static 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
3045 static 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
3061 static 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
3109 static 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
3382 static 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
3393 module_init(aha152x_init);
3394 module_exit(aha152x_exit);
3395
3396 #if !defined(MODULE)
3397 static 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 */
Kernel DRM miscellaneous fixes and cross-tree changes