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3e0a4e85 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* aha152x.c -- Adaptec AHA-152x driver |
96de0e25 JE |
3 | * Author: Jürgen E. Fischer, fischer@norbit.de |
4 | * Copyright 1993-2004 Jürgen E. Fischer | |
1da177e4 | 5 | * |
1da177e4 LT |
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 | * | |
1da177e4 | 221 | ************************************************************************** |
f75ae8ed | 222 | |
1da177e4 LT |
223 | see Documentation/scsi/aha152x.txt for configuration details |
224 | ||
225 | **************************************************************************/ | |
226 | ||
227 | #include <linux/module.h> | |
1da177e4 | 228 | #include <asm/irq.h> |
53d5ed62 | 229 | #include <linux/io.h> |
1da177e4 | 230 | #include <linux/blkdev.h> |
0f06bb34 | 231 | #include <linux/completion.h> |
1da177e4 LT |
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> | |
5fcda422 | 244 | #include <linux/list.h> |
5a0e3ad6 | 245 | #include <linux/slab.h> |
1da177e4 LT |
246 | #include <scsi/scsicam.h> |
247 | ||
248 | #include "scsi.h" | |
db9dff36 | 249 | #include <scsi/scsi_dbg.h> |
1da177e4 | 250 | #include <scsi/scsi_host.h> |
1abfd370 | 251 | #include <scsi/scsi_transport_spi.h> |
73d2cb16 | 252 | #include <scsi/scsi_eh.h> |
1da177e4 LT |
253 | #include "aha152x.h" |
254 | ||
5fcda422 JB |
255 | static LIST_HEAD(aha152x_host_list); |
256 | ||
1da177e4 LT |
257 | |
258 | /* DEFINES */ | |
259 | ||
260 | /* For PCMCIA cards, always use AUTOCONF */ | |
3eb2ebcb | 261 | #if defined(AHA152X_PCMCIA) || defined(MODULE) |
1da177e4 LT |
262 | #if !defined(AUTOCONF) |
263 | #define AUTOCONF | |
264 | #endif | |
265 | #endif | |
266 | ||
267 | #if !defined(AUTOCONF) && !defined(SETUP0) | |
268 | #error define AUTOCONF or SETUP0 | |
269 | #endif | |
270 | ||
1da177e4 LT |
271 | #define DO_LOCK(flags) spin_lock_irqsave(&QLOCK,flags) |
272 | #define DO_UNLOCK(flags) spin_unlock_irqrestore(&QLOCK,flags) | |
1da177e4 LT |
273 | |
274 | #define LEAD "(scsi%d:%d:%d) " | |
1da177e4 | 275 | #define INFO_LEAD KERN_INFO LEAD |
1da177e4 LT |
276 | #define CMDINFO(cmd) \ |
277 | (cmd) ? ((cmd)->device->host->host_no) : -1, \ | |
278 | (cmd) ? ((cmd)->device->id & 0x0f) : -1, \ | |
9cb78c16 | 279 | (cmd) ? ((u8)(cmd)->device->lun & 0x07) : -1 |
1da177e4 | 280 | |
2338545a BH |
281 | static inline void |
282 | CMD_INC_RESID(struct scsi_cmnd *cmd, int inc) | |
283 | { | |
284 | scsi_set_resid(cmd, scsi_get_resid(cmd) + inc); | |
285 | } | |
286 | ||
1da177e4 LT |
287 | #define DELAY_DEFAULT 1000 |
288 | ||
3eb2ebcb | 289 | #if defined(AHA152X_PCMCIA) |
1da177e4 LT |
290 | #define IRQ_MIN 0 |
291 | #define IRQ_MAX 16 | |
292 | #else | |
293 | #define IRQ_MIN 9 | |
294 | #if defined(__PPC) | |
171ac6ae | 295 | #define IRQ_MAX (nr_irqs-1) |
1da177e4 LT |
296 | #else |
297 | #define IRQ_MAX 12 | |
298 | #endif | |
299 | #endif | |
300 | ||
301 | enum { | |
302 | not_issued = 0x0001, /* command not yet issued */ | |
f75ae8ed | 303 | selecting = 0x0002, /* target is being selected */ |
1da177e4 LT |
304 | identified = 0x0004, /* IDENTIFY was sent */ |
305 | disconnected = 0x0008, /* target disconnected */ | |
f75ae8ed | 306 | completed = 0x0010, /* target sent COMMAND COMPLETE */ |
1da177e4 LT |
307 | aborted = 0x0020, /* ABORT was sent */ |
308 | resetted = 0x0040, /* BUS DEVICE RESET was sent */ | |
309 | spiordy = 0x0080, /* waiting for SPIORDY to raise */ | |
310 | syncneg = 0x0100, /* synchronous negotiation in progress */ | |
311 | aborting = 0x0200, /* ABORT is pending */ | |
312 | resetting = 0x0400, /* BUS DEVICE RESET is pending */ | |
313 | check_condition = 0x0800, /* requesting sense after CHECK CONDITION */ | |
314 | }; | |
315 | ||
96de0e25 | 316 | MODULE_AUTHOR("Jürgen Fischer"); |
1da177e4 LT |
317 | MODULE_DESCRIPTION(AHA152X_REVID); |
318 | MODULE_LICENSE("GPL"); | |
319 | ||
3eb2ebcb | 320 | #if !defined(AHA152X_PCMCIA) |
1da177e4 LT |
321 | #if defined(MODULE) |
322 | static int io[] = {0, 0}; | |
88f06b76 | 323 | module_param_hw_array(io, int, ioport, NULL, 0); |
1da177e4 LT |
324 | MODULE_PARM_DESC(io,"base io address of controller"); |
325 | ||
326 | static int irq[] = {0, 0}; | |
88f06b76 | 327 | module_param_hw_array(irq, int, irq, NULL, 0); |
1da177e4 LT |
328 | MODULE_PARM_DESC(irq,"interrupt for controller"); |
329 | ||
330 | static int scsiid[] = {7, 7}; | |
331 | module_param_array(scsiid, int, NULL, 0); | |
332 | MODULE_PARM_DESC(scsiid,"scsi id of controller"); | |
333 | ||
334 | static int reconnect[] = {1, 1}; | |
335 | module_param_array(reconnect, int, NULL, 0); | |
336 | MODULE_PARM_DESC(reconnect,"allow targets to disconnect"); | |
337 | ||
338 | static int parity[] = {1, 1}; | |
339 | module_param_array(parity, int, NULL, 0); | |
340 | MODULE_PARM_DESC(parity,"use scsi parity"); | |
341 | ||
342 | static int sync[] = {1, 1}; | |
343 | module_param_array(sync, int, NULL, 0); | |
344 | MODULE_PARM_DESC(sync,"use synchronous transfers"); | |
345 | ||
346 | static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT}; | |
347 | module_param_array(delay, int, NULL, 0); | |
348 | MODULE_PARM_DESC(delay,"scsi reset delay"); | |
349 | ||
350 | static int exttrans[] = {0, 0}; | |
351 | module_param_array(exttrans, int, NULL, 0); | |
352 | MODULE_PARM_DESC(exttrans,"use extended translation"); | |
353 | ||
1da177e4 LT |
354 | static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0}; |
355 | module_param_array(aha152x, int, NULL, 0); | |
356 | MODULE_PARM_DESC(aha152x, "parameters for first controller"); | |
357 | ||
358 | static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0}; | |
359 | module_param_array(aha152x1, int, NULL, 0); | |
360 | MODULE_PARM_DESC(aha152x1, "parameters for second controller"); | |
1da177e4 LT |
361 | #endif /* MODULE */ |
362 | ||
363 | #ifdef __ISAPNP__ | |
6f039790 | 364 | static struct isapnp_device_id id_table[] = { |
50f87f91 OZ |
365 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1502), 0 }, |
366 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1505), 0 }, | |
367 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1510), 0 }, | |
368 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1515), 0 }, | |
369 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1520), 0 }, | |
370 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2015), 0 }, | |
371 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1522), 0 }, | |
372 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2215), 0 }, | |
373 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1530), 0 }, | |
374 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3015), 0 }, | |
375 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1532), 0 }, | |
376 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3215), 0 }, | |
377 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x6360), 0 }, | |
1da177e4 LT |
378 | { ISAPNP_DEVICE_SINGLE_END, } |
379 | }; | |
380 | MODULE_DEVICE_TABLE(isapnp, id_table); | |
381 | #endif /* ISAPNP */ | |
382 | ||
3eb2ebcb | 383 | #endif /* !AHA152X_PCMCIA */ |
1da177e4 | 384 | |
d0be4a7d | 385 | static struct scsi_host_template aha152x_driver_template; |
1da177e4 LT |
386 | |
387 | /* | |
388 | * internal states of the host | |
389 | * | |
f75ae8ed | 390 | */ |
1da177e4 LT |
391 | enum aha152x_state { |
392 | idle=0, | |
393 | unknown, | |
394 | seldo, | |
395 | seldi, | |
396 | selto, | |
397 | busfree, | |
398 | msgo, | |
399 | cmd, | |
400 | msgi, | |
401 | status, | |
402 | datai, | |
403 | datao, | |
404 | parerr, | |
405 | rsti, | |
406 | maxstate | |
407 | }; | |
408 | ||
409 | /* | |
410 | * current state information of the host | |
411 | * | |
412 | */ | |
413 | struct aha152x_hostdata { | |
91ebc1fa | 414 | struct scsi_cmnd *issue_SC; |
1da177e4 LT |
415 | /* pending commands to issue */ |
416 | ||
91ebc1fa | 417 | struct scsi_cmnd *current_SC; |
1da177e4 LT |
418 | /* current command on the bus */ |
419 | ||
91ebc1fa | 420 | struct scsi_cmnd *disconnected_SC; |
1da177e4 LT |
421 | /* commands that disconnected */ |
422 | ||
91ebc1fa | 423 | struct scsi_cmnd *done_SC; |
1da177e4 LT |
424 | /* command that was completed */ |
425 | ||
426 | spinlock_t lock; | |
427 | /* host lock */ | |
428 | ||
1da177e4 | 429 | #if defined(AHA152X_STAT) |
f75ae8ed | 430 | int total_commands; |
1da177e4 LT |
431 | int disconnections; |
432 | int busfree_without_any_action; | |
433 | int busfree_without_old_command; | |
434 | int busfree_without_new_command; | |
435 | int busfree_without_done_command; | |
436 | int busfree_with_check_condition; | |
f75ae8ed HR |
437 | int count[maxstate]; |
438 | int count_trans[maxstate]; | |
1da177e4 LT |
439 | unsigned long time[maxstate]; |
440 | #endif | |
441 | ||
442 | int commands; /* current number of commands */ | |
443 | ||
444 | int reconnect; /* disconnection allowed */ | |
445 | int parity; /* parity checking enabled */ | |
446 | int synchronous; /* synchronous transferes enabled */ | |
447 | int delay; /* reset out delay */ | |
448 | int ext_trans; /* extended translation enabled */ | |
449 | ||
f75ae8ed | 450 | int swint; /* software-interrupt was fired during detect() */ |
1da177e4 LT |
451 | int service; /* bh needs to be run */ |
452 | int in_intr; /* bh is running */ | |
453 | ||
454 | /* current state, | |
455 | previous state, | |
456 | last state different from current state */ | |
457 | enum aha152x_state state, prevstate, laststate; | |
458 | ||
459 | int target; | |
460 | /* reconnecting target */ | |
461 | ||
462 | unsigned char syncrate[8]; | |
463 | /* current synchronous transfer agreements */ | |
464 | ||
465 | unsigned char syncneg[8]; | |
466 | /* 0: no negotiation; | |
467 | * 1: negotiation in progress; | |
468 | * 2: negotiation completed | |
469 | */ | |
470 | ||
471 | int cmd_i; | |
472 | /* number of sent bytes of current command */ | |
473 | ||
474 | int msgi_len; | |
475 | /* number of received message bytes */ | |
476 | unsigned char msgi[256]; | |
477 | /* received message bytes */ | |
478 | ||
f75ae8ed | 479 | int msgo_i, msgo_len; |
1da177e4 LT |
480 | /* number of sent bytes and length of current messages */ |
481 | unsigned char msgo[256]; | |
482 | /* pending messages */ | |
483 | ||
484 | int data_len; | |
485 | /* number of sent/received bytes in dataphase */ | |
486 | ||
487 | unsigned long io_port0; | |
488 | unsigned long io_port1; | |
489 | ||
490 | #ifdef __ISAPNP__ | |
491 | struct pnp_dev *pnpdev; | |
492 | #endif | |
5fcda422 | 493 | struct list_head host_list; |
1da177e4 LT |
494 | }; |
495 | ||
496 | ||
497 | /* | |
498 | * host specific command extension | |
499 | * | |
500 | */ | |
501 | struct aha152x_scdata { | |
91ebc1fa | 502 | struct scsi_cmnd *next; /* next sc in queue */ |
0f06bb34 | 503 | struct completion *done;/* semaphore to block on */ |
73d2cb16 | 504 | struct scsi_eh_save ses; |
1da177e4 LT |
505 | }; |
506 | ||
1da177e4 LT |
507 | /* access macros for hostdata */ |
508 | ||
509 | #define HOSTDATA(shpnt) ((struct aha152x_hostdata *) &shpnt->hostdata) | |
510 | ||
511 | #define HOSTNO ((shpnt)->host_no) | |
512 | ||
513 | #define CURRENT_SC (HOSTDATA(shpnt)->current_SC) | |
514 | #define DONE_SC (HOSTDATA(shpnt)->done_SC) | |
515 | #define ISSUE_SC (HOSTDATA(shpnt)->issue_SC) | |
516 | #define DISCONNECTED_SC (HOSTDATA(shpnt)->disconnected_SC) | |
517 | #define QLOCK (HOSTDATA(shpnt)->lock) | |
518 | #define QLOCKER (HOSTDATA(shpnt)->locker) | |
519 | #define QLOCKERL (HOSTDATA(shpnt)->lockerl) | |
520 | ||
521 | #define STATE (HOSTDATA(shpnt)->state) | |
522 | #define PREVSTATE (HOSTDATA(shpnt)->prevstate) | |
523 | #define LASTSTATE (HOSTDATA(shpnt)->laststate) | |
524 | ||
525 | #define RECONN_TARGET (HOSTDATA(shpnt)->target) | |
526 | ||
527 | #define CMD_I (HOSTDATA(shpnt)->cmd_i) | |
528 | ||
529 | #define MSGO(i) (HOSTDATA(shpnt)->msgo[i]) | |
530 | #define MSGO_I (HOSTDATA(shpnt)->msgo_i) | |
531 | #define MSGOLEN (HOSTDATA(shpnt)->msgo_len) | |
532 | #define ADDMSGO(x) (MSGOLEN<256 ? (void)(MSGO(MSGOLEN++)=x) : aha152x_error(shpnt,"MSGO overflow")) | |
533 | ||
534 | #define MSGI(i) (HOSTDATA(shpnt)->msgi[i]) | |
535 | #define MSGILEN (HOSTDATA(shpnt)->msgi_len) | |
536 | #define ADDMSGI(x) (MSGILEN<256 ? (void)(MSGI(MSGILEN++)=x) : aha152x_error(shpnt,"MSGI overflow")) | |
537 | ||
538 | #define DATA_LEN (HOSTDATA(shpnt)->data_len) | |
539 | ||
540 | #define SYNCRATE (HOSTDATA(shpnt)->syncrate[CURRENT_SC->device->id]) | |
541 | #define SYNCNEG (HOSTDATA(shpnt)->syncneg[CURRENT_SC->device->id]) | |
542 | ||
543 | #define DELAY (HOSTDATA(shpnt)->delay) | |
544 | #define EXT_TRANS (HOSTDATA(shpnt)->ext_trans) | |
545 | #define TC1550 (HOSTDATA(shpnt)->tc1550) | |
546 | #define RECONNECT (HOSTDATA(shpnt)->reconnect) | |
547 | #define PARITY (HOSTDATA(shpnt)->parity) | |
548 | #define SYNCHRONOUS (HOSTDATA(shpnt)->synchronous) | |
549 | ||
550 | #define HOSTIOPORT0 (HOSTDATA(shpnt)->io_port0) | |
551 | #define HOSTIOPORT1 (HOSTDATA(shpnt)->io_port1) | |
552 | ||
553 | #define SCDATA(SCpnt) ((struct aha152x_scdata *) (SCpnt)->host_scribble) | |
554 | #define SCNEXT(SCpnt) SCDATA(SCpnt)->next | |
0f06bb34 | 555 | #define SCSEM(SCpnt) SCDATA(SCpnt)->done |
1da177e4 | 556 | |
45711f1a | 557 | #define SG_ADDRESS(buffer) ((char *) sg_virt((buffer))) |
1da177e4 LT |
558 | |
559 | /* state handling */ | |
560 | static void seldi_run(struct Scsi_Host *shpnt); | |
561 | static void seldo_run(struct Scsi_Host *shpnt); | |
562 | static void selto_run(struct Scsi_Host *shpnt); | |
563 | static void busfree_run(struct Scsi_Host *shpnt); | |
564 | ||
565 | static void msgo_init(struct Scsi_Host *shpnt); | |
566 | static void msgo_run(struct Scsi_Host *shpnt); | |
567 | static void msgo_end(struct Scsi_Host *shpnt); | |
568 | ||
569 | static void cmd_init(struct Scsi_Host *shpnt); | |
570 | static void cmd_run(struct Scsi_Host *shpnt); | |
571 | static void cmd_end(struct Scsi_Host *shpnt); | |
572 | ||
573 | static void datai_init(struct Scsi_Host *shpnt); | |
574 | static void datai_run(struct Scsi_Host *shpnt); | |
575 | static void datai_end(struct Scsi_Host *shpnt); | |
576 | ||
577 | static void datao_init(struct Scsi_Host *shpnt); | |
578 | static void datao_run(struct Scsi_Host *shpnt); | |
579 | static void datao_end(struct Scsi_Host *shpnt); | |
580 | ||
581 | static void status_run(struct Scsi_Host *shpnt); | |
582 | ||
583 | static void msgi_run(struct Scsi_Host *shpnt); | |
584 | static void msgi_end(struct Scsi_Host *shpnt); | |
585 | ||
586 | static void parerr_run(struct Scsi_Host *shpnt); | |
587 | static void rsti_run(struct Scsi_Host *shpnt); | |
588 | ||
589 | static void is_complete(struct Scsi_Host *shpnt); | |
590 | ||
591 | /* | |
592 | * driver states | |
593 | * | |
594 | */ | |
595 | static struct { | |
596 | char *name; | |
597 | void (*init)(struct Scsi_Host *); | |
598 | void (*run)(struct Scsi_Host *); | |
599 | void (*end)(struct Scsi_Host *); | |
600 | int spio; | |
601 | } states[] = { | |
602 | { "idle", NULL, NULL, NULL, 0}, | |
603 | { "unknown", NULL, NULL, NULL, 0}, | |
604 | { "seldo", NULL, seldo_run, NULL, 0}, | |
605 | { "seldi", NULL, seldi_run, NULL, 0}, | |
606 | { "selto", NULL, selto_run, NULL, 0}, | |
607 | { "busfree", NULL, busfree_run, NULL, 0}, | |
608 | { "msgo", msgo_init, msgo_run, msgo_end, 1}, | |
609 | { "cmd", cmd_init, cmd_run, cmd_end, 1}, | |
610 | { "msgi", NULL, msgi_run, msgi_end, 1}, | |
611 | { "status", NULL, status_run, NULL, 1}, | |
612 | { "datai", datai_init, datai_run, datai_end, 0}, | |
613 | { "datao", datao_init, datao_run, datao_end, 0}, | |
614 | { "parerr", NULL, parerr_run, NULL, 0}, | |
615 | { "rsti", NULL, rsti_run, NULL, 0}, | |
616 | }; | |
617 | ||
618 | /* setup & interrupt */ | |
7d12e780 | 619 | static irqreturn_t intr(int irq, void *dev_id); |
1da177e4 LT |
620 | static void reset_ports(struct Scsi_Host *shpnt); |
621 | static void aha152x_error(struct Scsi_Host *shpnt, char *msg); | |
622 | static void done(struct Scsi_Host *shpnt, int error); | |
623 | ||
624 | /* diagnostics */ | |
91ebc1fa | 625 | static void show_command(struct scsi_cmnd * ptr); |
1da177e4 LT |
626 | static void show_queues(struct Scsi_Host *shpnt); |
627 | static void disp_enintr(struct Scsi_Host *shpnt); | |
628 | ||
629 | ||
630 | /* | |
631 | * queue services: | |
632 | * | |
633 | */ | |
91ebc1fa | 634 | static inline void append_SC(struct scsi_cmnd **SC, struct scsi_cmnd *new_SC) |
1da177e4 | 635 | { |
91ebc1fa | 636 | struct scsi_cmnd *end; |
1da177e4 LT |
637 | |
638 | SCNEXT(new_SC) = NULL; | |
639 | if (!*SC) | |
640 | *SC = new_SC; | |
641 | else { | |
642 | for (end = *SC; SCNEXT(end); end = SCNEXT(end)) | |
643 | ; | |
644 | SCNEXT(end) = new_SC; | |
645 | } | |
646 | } | |
647 | ||
91ebc1fa | 648 | static inline struct scsi_cmnd *remove_first_SC(struct scsi_cmnd ** SC) |
1da177e4 | 649 | { |
91ebc1fa | 650 | struct scsi_cmnd *ptr; |
1da177e4 LT |
651 | |
652 | ptr = *SC; | |
653 | if (ptr) { | |
654 | *SC = SCNEXT(*SC); | |
655 | SCNEXT(ptr)=NULL; | |
656 | } | |
657 | return ptr; | |
658 | } | |
659 | ||
91ebc1fa JT |
660 | static inline struct scsi_cmnd *remove_lun_SC(struct scsi_cmnd ** SC, |
661 | int target, int lun) | |
1da177e4 | 662 | { |
91ebc1fa | 663 | struct scsi_cmnd *ptr, *prev; |
1da177e4 LT |
664 | |
665 | for (ptr = *SC, prev = NULL; | |
666 | ptr && ((ptr->device->id != target) || (ptr->device->lun != lun)); | |
667 | prev = ptr, ptr = SCNEXT(ptr)) | |
668 | ; | |
669 | ||
670 | if (ptr) { | |
671 | if (prev) | |
672 | SCNEXT(prev) = SCNEXT(ptr); | |
673 | else | |
674 | *SC = SCNEXT(ptr); | |
675 | ||
676 | SCNEXT(ptr)=NULL; | |
677 | } | |
678 | ||
679 | return ptr; | |
680 | } | |
681 | ||
91ebc1fa JT |
682 | static inline struct scsi_cmnd *remove_SC(struct scsi_cmnd **SC, |
683 | struct scsi_cmnd *SCp) | |
1da177e4 | 684 | { |
91ebc1fa | 685 | struct scsi_cmnd *ptr, *prev; |
1da177e4 LT |
686 | |
687 | for (ptr = *SC, prev = NULL; | |
688 | ptr && SCp!=ptr; | |
689 | prev = ptr, ptr = SCNEXT(ptr)) | |
690 | ; | |
691 | ||
692 | if (ptr) { | |
693 | if (prev) | |
694 | SCNEXT(prev) = SCNEXT(ptr); | |
695 | else | |
696 | *SC = SCNEXT(ptr); | |
697 | ||
698 | SCNEXT(ptr)=NULL; | |
699 | } | |
700 | ||
701 | return ptr; | |
702 | } | |
703 | ||
7d12e780 | 704 | static irqreturn_t swintr(int irqno, void *dev_id) |
1da177e4 | 705 | { |
c7bec5ab | 706 | struct Scsi_Host *shpnt = dev_id; |
1da177e4 LT |
707 | |
708 | HOSTDATA(shpnt)->swint++; | |
709 | ||
710 | SETPORT(DMACNTRL0, INTEN); | |
711 | return IRQ_HANDLED; | |
712 | } | |
713 | ||
714 | struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup) | |
715 | { | |
716 | struct Scsi_Host *shpnt; | |
717 | ||
718 | shpnt = scsi_host_alloc(&aha152x_driver_template, sizeof(struct aha152x_hostdata)); | |
719 | if (!shpnt) { | |
720 | printk(KERN_ERR "aha152x: scsi_host_alloc failed\n"); | |
721 | return NULL; | |
722 | } | |
723 | ||
1da177e4 | 724 | memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt)); |
5fcda422 JB |
725 | INIT_LIST_HEAD(&HOSTDATA(shpnt)->host_list); |
726 | ||
727 | /* need to have host registered before triggering any interrupt */ | |
728 | list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list); | |
1da177e4 LT |
729 | |
730 | shpnt->io_port = setup->io_port; | |
731 | shpnt->n_io_port = IO_RANGE; | |
732 | shpnt->irq = setup->irq; | |
733 | ||
734 | if (!setup->tc1550) { | |
735 | HOSTIOPORT0 = setup->io_port; | |
736 | HOSTIOPORT1 = setup->io_port; | |
737 | } else { | |
738 | HOSTIOPORT0 = setup->io_port+0x10; | |
739 | HOSTIOPORT1 = setup->io_port-0x10; | |
740 | } | |
741 | ||
742 | spin_lock_init(&QLOCK); | |
743 | RECONNECT = setup->reconnect; | |
744 | SYNCHRONOUS = setup->synchronous; | |
745 | PARITY = setup->parity; | |
746 | DELAY = setup->delay; | |
747 | EXT_TRANS = setup->ext_trans; | |
748 | ||
1da177e4 LT |
749 | SETPORT(SCSIID, setup->scsiid << 4); |
750 | shpnt->this_id = setup->scsiid; | |
751 | ||
752 | if (setup->reconnect) | |
753 | shpnt->can_queue = AHA152X_MAXQUEUE; | |
754 | ||
755 | /* RESET OUT */ | |
756 | printk("aha152x: resetting bus...\n"); | |
757 | SETPORT(SCSISEQ, SCSIRSTO); | |
758 | mdelay(256); | |
759 | SETPORT(SCSISEQ, 0); | |
760 | mdelay(DELAY); | |
761 | ||
762 | reset_ports(shpnt); | |
763 | ||
764 | printk(KERN_INFO | |
765 | "aha152x%d%s: " | |
766 | "vital data: rev=%x, " | |
767 | "io=0x%03lx (0x%03lx/0x%03lx), " | |
768 | "irq=%d, " | |
769 | "scsiid=%d, " | |
770 | "reconnect=%s, " | |
771 | "parity=%s, " | |
772 | "synchronous=%s, " | |
773 | "delay=%d, " | |
774 | "extended translation=%s\n", | |
775 | shpnt->host_no, setup->tc1550 ? " (tc1550 mode)" : "", | |
776 | GETPORT(REV) & 0x7, | |
777 | shpnt->io_port, HOSTIOPORT0, HOSTIOPORT1, | |
778 | shpnt->irq, | |
779 | shpnt->this_id, | |
780 | RECONNECT ? "enabled" : "disabled", | |
781 | PARITY ? "enabled" : "disabled", | |
782 | SYNCHRONOUS ? "enabled" : "disabled", | |
783 | DELAY, | |
784 | EXT_TRANS ? "enabled" : "disabled"); | |
785 | ||
786 | /* not expecting any interrupts */ | |
787 | SETPORT(SIMODE0, 0); | |
788 | SETPORT(SIMODE1, 0); | |
789 | ||
4909cc2b | 790 | if (request_irq(shpnt->irq, swintr, IRQF_SHARED, "aha152x", shpnt)) { |
1da177e4 LT |
791 | printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq); |
792 | goto out_host_put; | |
793 | } | |
794 | ||
795 | HOSTDATA(shpnt)->swint = 0; | |
796 | ||
797 | printk(KERN_INFO "aha152x%d: trying software interrupt, ", shpnt->host_no); | |
798 | ||
799 | mb(); | |
800 | SETPORT(DMACNTRL0, SWINT|INTEN); | |
801 | mdelay(1000); | |
802 | free_irq(shpnt->irq, shpnt); | |
803 | ||
804 | if (!HOSTDATA(shpnt)->swint) { | |
805 | if (TESTHI(DMASTAT, INTSTAT)) { | |
806 | printk("lost.\n"); | |
807 | } else { | |
808 | printk("failed.\n"); | |
809 | } | |
810 | ||
811 | SETPORT(DMACNTRL0, INTEN); | |
812 | ||
813 | printk(KERN_ERR "aha152x%d: irq %d possibly wrong. " | |
814 | "Please verify.\n", shpnt->host_no, shpnt->irq); | |
815 | goto out_host_put; | |
816 | } | |
817 | printk("ok.\n"); | |
818 | ||
819 | ||
820 | /* clear interrupts */ | |
821 | SETPORT(SSTAT0, 0x7f); | |
822 | SETPORT(SSTAT1, 0xef); | |
823 | ||
4909cc2b | 824 | if (request_irq(shpnt->irq, intr, IRQF_SHARED, "aha152x", shpnt)) { |
1da177e4 LT |
825 | printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq); |
826 | goto out_host_put; | |
827 | } | |
828 | ||
829 | if( scsi_add_host(shpnt, NULL) ) { | |
830 | free_irq(shpnt->irq, shpnt); | |
831 | printk(KERN_ERR "aha152x%d: failed to add host.\n", shpnt->host_no); | |
832 | goto out_host_put; | |
833 | } | |
834 | ||
835 | scsi_scan_host(shpnt); | |
836 | ||
1da177e4 LT |
837 | return shpnt; |
838 | ||
839 | out_host_put: | |
5fcda422 | 840 | list_del(&HOSTDATA(shpnt)->host_list); |
1da177e4 LT |
841 | scsi_host_put(shpnt); |
842 | ||
843 | return NULL; | |
844 | } | |
845 | ||
846 | void aha152x_release(struct Scsi_Host *shpnt) | |
847 | { | |
1bd40573 | 848 | if (!shpnt) |
1da177e4 LT |
849 | return; |
850 | ||
1bd40573 | 851 | scsi_remove_host(shpnt); |
1da177e4 LT |
852 | if (shpnt->irq) |
853 | free_irq(shpnt->irq, shpnt); | |
854 | ||
3eb2ebcb | 855 | #if !defined(AHA152X_PCMCIA) |
1da177e4 LT |
856 | if (shpnt->io_port) |
857 | release_region(shpnt->io_port, IO_RANGE); | |
858 | #endif | |
859 | ||
860 | #ifdef __ISAPNP__ | |
861 | if (HOSTDATA(shpnt)->pnpdev) | |
862 | pnp_device_detach(HOSTDATA(shpnt)->pnpdev); | |
863 | #endif | |
864 | ||
5fcda422 | 865 | list_del(&HOSTDATA(shpnt)->host_list); |
1da177e4 LT |
866 | scsi_host_put(shpnt); |
867 | } | |
868 | ||
869 | ||
870 | /* | |
871 | * setup controller to generate interrupts depending | |
872 | * on current state (lock has to be acquired) | |
873 | * | |
f75ae8ed | 874 | */ |
1da177e4 LT |
875 | static int setup_expected_interrupts(struct Scsi_Host *shpnt) |
876 | { | |
877 | if(CURRENT_SC) { | |
878 | CURRENT_SC->SCp.phase |= 1 << 16; | |
f75ae8ed | 879 | |
1da177e4 | 880 | if(CURRENT_SC->SCp.phase & selecting) { |
1da177e4 LT |
881 | SETPORT(SSTAT1, SELTO); |
882 | SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0)); | |
883 | SETPORT(SIMODE1, ENSELTIMO); | |
884 | } else { | |
1da177e4 | 885 | SETPORT(SIMODE0, (CURRENT_SC->SCp.phase & spiordy) ? ENSPIORDY : 0); |
f75ae8ed | 886 | SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE); |
1da177e4 LT |
887 | } |
888 | } else if(STATE==seldi) { | |
1da177e4 | 889 | SETPORT(SIMODE0, 0); |
f75ae8ed | 890 | SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE); |
1da177e4 | 891 | } else { |
1da177e4 LT |
892 | SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0); |
893 | SETPORT(SIMODE1, ENSCSIRST | ( (ISSUE_SC||DONE_SC) ? ENBUSFREE : 0)); | |
894 | } | |
895 | ||
896 | if(!HOSTDATA(shpnt)->in_intr) | |
897 | SETBITS(DMACNTRL0, INTEN); | |
898 | ||
899 | return TESTHI(DMASTAT, INTSTAT); | |
900 | } | |
901 | ||
902 | ||
f75ae8ed | 903 | /* |
1da177e4 LT |
904 | * Queue a command and setup interrupts for a free bus. |
905 | */ | |
91ebc1fa JT |
906 | static int aha152x_internal_queue(struct scsi_cmnd *SCpnt, |
907 | struct completion *complete, | |
908 | int phase, void (*done)(struct scsi_cmnd *)) | |
1da177e4 LT |
909 | { |
910 | struct Scsi_Host *shpnt = SCpnt->device->host; | |
911 | unsigned long flags; | |
912 | ||
1da177e4 | 913 | SCpnt->scsi_done = done; |
1da177e4 | 914 | SCpnt->SCp.phase = not_issued | phase; |
0ceb4798 | 915 | SCpnt->SCp.Status = 0x1; /* Ilegal status by SCSI standard */ |
1da177e4 LT |
916 | SCpnt->SCp.Message = 0; |
917 | SCpnt->SCp.have_data_in = 0; | |
918 | SCpnt->SCp.sent_command = 0; | |
919 | ||
920 | if(SCpnt->SCp.phase & (resetting|check_condition)) { | |
172c122d | 921 | if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) { |
f75ae8ed | 922 | scmd_printk(KERN_ERR, SCpnt, "cannot reuse command\n"); |
1da177e4 LT |
923 | return FAILED; |
924 | } | |
925 | } else { | |
926 | SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC); | |
172c122d | 927 | if(!SCpnt->host_scribble) { |
f75ae8ed | 928 | scmd_printk(KERN_ERR, SCpnt, "allocation failed\n"); |
1da177e4 LT |
929 | return FAILED; |
930 | } | |
931 | } | |
932 | ||
933 | SCNEXT(SCpnt) = NULL; | |
0f06bb34 | 934 | SCSEM(SCpnt) = complete; |
1da177e4 LT |
935 | |
936 | /* setup scratch area | |
937 | SCp.ptr : buffer pointer | |
938 | SCp.this_residual : buffer length | |
939 | SCp.buffer : next buffer | |
940 | SCp.buffers_residual : left buffers in list | |
941 | SCp.phase : current state of the command */ | |
66acdb03 | 942 | |
73d2cb16 BH |
943 | if ((phase & resetting) || !scsi_sglist(SCpnt)) { |
944 | SCpnt->SCp.ptr = NULL; | |
945 | SCpnt->SCp.this_residual = 0; | |
946 | scsi_set_resid(SCpnt, 0); | |
66acdb03 BH |
947 | SCpnt->SCp.buffer = NULL; |
948 | SCpnt->SCp.buffers_residual = 0; | |
949 | } else { | |
2338545a BH |
950 | scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); |
951 | SCpnt->SCp.buffer = scsi_sglist(SCpnt); | |
1da177e4 LT |
952 | SCpnt->SCp.ptr = SG_ADDRESS(SCpnt->SCp.buffer); |
953 | SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length; | |
2338545a | 954 | SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1; |
66acdb03 | 955 | } |
1da177e4 LT |
956 | |
957 | DO_LOCK(flags); | |
958 | ||
959 | #if defined(AHA152X_STAT) | |
960 | HOSTDATA(shpnt)->total_commands++; | |
961 | #endif | |
962 | ||
963 | /* Turn led on, when this is the first command. */ | |
964 | HOSTDATA(shpnt)->commands++; | |
965 | if (HOSTDATA(shpnt)->commands==1) | |
966 | SETPORT(PORTA, 1); | |
967 | ||
968 | append_SC(&ISSUE_SC, SCpnt); | |
969 | ||
970 | if(!HOSTDATA(shpnt)->in_intr) | |
971 | setup_expected_interrupts(shpnt); | |
972 | ||
973 | DO_UNLOCK(flags); | |
974 | ||
975 | return 0; | |
976 | } | |
977 | ||
978 | /* | |
979 | * queue a command | |
980 | * | |
981 | */ | |
91ebc1fa JT |
982 | static int aha152x_queue_lck(struct scsi_cmnd *SCpnt, |
983 | void (*done)(struct scsi_cmnd *)) | |
1da177e4 | 984 | { |
1da177e4 LT |
985 | return aha152x_internal_queue(SCpnt, NULL, 0, done); |
986 | } | |
987 | ||
f281233d JG |
988 | static DEF_SCSI_QCMD(aha152x_queue) |
989 | ||
1da177e4 LT |
990 | |
991 | /* | |
1da177e4 LT |
992 | * |
993 | */ | |
91ebc1fa | 994 | static void reset_done(struct scsi_cmnd *SCpnt) |
1da177e4 | 995 | { |
1da177e4 | 996 | if(SCSEM(SCpnt)) { |
0f06bb34 | 997 | complete(SCSEM(SCpnt)); |
1da177e4 | 998 | } else { |
0f06bb34 | 999 | printk(KERN_ERR "aha152x: reset_done w/o completion\n"); |
1da177e4 LT |
1000 | } |
1001 | } | |
1002 | ||
1003 | /* | |
1004 | * Abort a command | |
1005 | * | |
1006 | */ | |
91ebc1fa | 1007 | static int aha152x_abort(struct scsi_cmnd *SCpnt) |
1da177e4 LT |
1008 | { |
1009 | struct Scsi_Host *shpnt = SCpnt->device->host; | |
91ebc1fa | 1010 | struct scsi_cmnd *ptr; |
1da177e4 LT |
1011 | unsigned long flags; |
1012 | ||
1da177e4 LT |
1013 | DO_LOCK(flags); |
1014 | ||
1015 | ptr=remove_SC(&ISSUE_SC, SCpnt); | |
1016 | ||
1017 | if(ptr) { | |
1da177e4 LT |
1018 | HOSTDATA(shpnt)->commands--; |
1019 | if (!HOSTDATA(shpnt)->commands) | |
1020 | SETPORT(PORTA, 0); | |
1021 | DO_UNLOCK(flags); | |
1022 | ||
1023 | kfree(SCpnt->host_scribble); | |
1024 | SCpnt->host_scribble=NULL; | |
1025 | ||
1026 | return SUCCESS; | |
f75ae8ed | 1027 | } |
1da177e4 LT |
1028 | |
1029 | DO_UNLOCK(flags); | |
1030 | ||
1031 | /* | |
1032 | * FIXME: | |
1033 | * for current command: queue ABORT for message out and raise ATN | |
1034 | * for disconnected command: pseudo SC with ABORT message or ABORT on reselection? | |
1035 | * | |
1036 | */ | |
1037 | ||
f75ae8ed HR |
1038 | scmd_printk(KERN_ERR, SCpnt, |
1039 | "cannot abort running or disconnected command\n"); | |
1da177e4 LT |
1040 | |
1041 | return FAILED; | |
1042 | } | |
1043 | ||
1da177e4 LT |
1044 | /* |
1045 | * Reset a device | |
1046 | * | |
1047 | */ | |
91ebc1fa | 1048 | static int aha152x_device_reset(struct scsi_cmnd * SCpnt) |
1da177e4 LT |
1049 | { |
1050 | struct Scsi_Host *shpnt = SCpnt->device->host; | |
0f06bb34 | 1051 | DECLARE_COMPLETION(done); |
1da177e4 | 1052 | int ret, issued, disconnected; |
631c228c | 1053 | unsigned char old_cmd_len = SCpnt->cmd_len; |
1da177e4 | 1054 | unsigned long flags; |
0f06bb34 | 1055 | unsigned long timeleft; |
1da177e4 | 1056 | |
1da177e4 | 1057 | if(CURRENT_SC==SCpnt) { |
f75ae8ed | 1058 | scmd_printk(KERN_ERR, SCpnt, "cannot reset current device\n"); |
1da177e4 LT |
1059 | return FAILED; |
1060 | } | |
1061 | ||
1062 | DO_LOCK(flags); | |
172c122d | 1063 | issued = remove_SC(&ISSUE_SC, SCpnt) == NULL; |
1da177e4 LT |
1064 | disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt); |
1065 | DO_UNLOCK(flags); | |
1066 | ||
1067 | SCpnt->cmd_len = 0; | |
1da177e4 | 1068 | |
0f06bb34 | 1069 | aha152x_internal_queue(SCpnt, &done, resetting, reset_done); |
1da177e4 | 1070 | |
0f06bb34 CH |
1071 | timeleft = wait_for_completion_timeout(&done, 100*HZ); |
1072 | if (!timeleft) { | |
1073 | /* remove command from issue queue */ | |
1074 | DO_LOCK(flags); | |
1075 | remove_SC(&ISSUE_SC, SCpnt); | |
1076 | DO_UNLOCK(flags); | |
1077 | } | |
631c228c CH |
1078 | |
1079 | SCpnt->cmd_len = old_cmd_len; | |
1da177e4 LT |
1080 | |
1081 | DO_LOCK(flags); | |
1082 | ||
1083 | if(SCpnt->SCp.phase & resetted) { | |
1084 | HOSTDATA(shpnt)->commands--; | |
1085 | if (!HOSTDATA(shpnt)->commands) | |
1086 | SETPORT(PORTA, 0); | |
1087 | kfree(SCpnt->host_scribble); | |
1088 | SCpnt->host_scribble=NULL; | |
1089 | ||
1090 | ret = SUCCESS; | |
1091 | } else { | |
1092 | /* requeue */ | |
1093 | if(!issued) { | |
1094 | append_SC(&ISSUE_SC, SCpnt); | |
1095 | } else if(disconnected) { | |
1096 | append_SC(&DISCONNECTED_SC, SCpnt); | |
1097 | } | |
f75ae8ed | 1098 | |
1da177e4 LT |
1099 | ret = FAILED; |
1100 | } | |
1101 | ||
1102 | DO_UNLOCK(flags); | |
1da177e4 LT |
1103 | return ret; |
1104 | } | |
1105 | ||
91ebc1fa JT |
1106 | static void free_hard_reset_SCs(struct Scsi_Host *shpnt, |
1107 | struct scsi_cmnd **SCs) | |
1da177e4 | 1108 | { |
91ebc1fa | 1109 | struct scsi_cmnd *ptr; |
1da177e4 LT |
1110 | |
1111 | ptr=*SCs; | |
1112 | while(ptr) { | |
91ebc1fa | 1113 | struct scsi_cmnd *next; |
1da177e4 LT |
1114 | |
1115 | if(SCDATA(ptr)) { | |
1116 | next = SCNEXT(ptr); | |
1117 | } else { | |
f75ae8ed HR |
1118 | scmd_printk(KERN_DEBUG, ptr, |
1119 | "queue corrupted at %p\n", ptr); | |
1da177e4 LT |
1120 | next = NULL; |
1121 | } | |
1122 | ||
1123 | if (!ptr->device->soft_reset) { | |
1da177e4 LT |
1124 | remove_SC(SCs, ptr); |
1125 | HOSTDATA(shpnt)->commands--; | |
1126 | kfree(ptr->host_scribble); | |
1127 | ptr->host_scribble=NULL; | |
1128 | } | |
1129 | ||
1130 | ptr = next; | |
1131 | } | |
1132 | } | |
1133 | ||
1134 | /* | |
1135 | * Reset the bus | |
1136 | * | |
819f80c9 HR |
1137 | * AIC-6260 has a hard reset (MRST signal), but apparently |
1138 | * one cannot trigger it via software. So live with | |
1139 | * a soft reset; no-one seemed to have cared. | |
1da177e4 | 1140 | */ |