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1da177e4 LT |
1 | /*+M************************************************************************* |
2 | * Adaptec AIC7xxx device driver for Linux. | |
3 | * | |
4 | * Copyright (c) 1994 John Aycock | |
5 | * The University of Calgary Department of Computer Science. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; see the file COPYING. If not, write to | |
19 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | * | |
21 | * Sources include the Adaptec 1740 driver (aha1740.c), the Ultrastor 24F | |
22 | * driver (ultrastor.c), various Linux kernel source, the Adaptec EISA | |
23 | * config file (!adp7771.cfg), the Adaptec AHA-2740A Series User's Guide, | |
24 | * the Linux Kernel Hacker's Guide, Writing a SCSI Device Driver for Linux, | |
25 | * the Adaptec 1542 driver (aha1542.c), the Adaptec EISA overlay file | |
26 | * (adp7770.ovl), the Adaptec AHA-2740 Series Technical Reference Manual, | |
27 | * the Adaptec AIC-7770 Data Book, the ANSI SCSI specification, the | |
28 | * ANSI SCSI-2 specification (draft 10c), ... | |
29 | * | |
30 | * -------------------------------------------------------------------------- | |
31 | * | |
32 | * Modifications by Daniel M. Eischen (deischen@iworks.InterWorks.org): | |
33 | * | |
34 | * Substantially modified to include support for wide and twin bus | |
35 | * adapters, DMAing of SCBs, tagged queueing, IRQ sharing, bug fixes, | |
36 | * SCB paging, and other rework of the code. | |
37 | * | |
38 | * Parts of this driver were also based on the FreeBSD driver by | |
39 | * Justin T. Gibbs. His copyright follows: | |
40 | * | |
41 | * -------------------------------------------------------------------------- | |
42 | * Copyright (c) 1994-1997 Justin Gibbs. | |
43 | * All rights reserved. | |
44 | * | |
45 | * Redistribution and use in source and binary forms, with or without | |
46 | * modification, are permitted provided that the following conditions | |
47 | * are met: | |
48 | * 1. Redistributions of source code must retain the above copyright | |
49 | * notice, this list of conditions, and the following disclaimer, | |
50 | * without modification, immediately at the beginning of the file. | |
51 | * 2. Redistributions in binary form must reproduce the above copyright | |
52 | * notice, this list of conditions and the following disclaimer in the | |
53 | * documentation and/or other materials provided with the distribution. | |
54 | * 3. The name of the author may not be used to endorse or promote products | |
55 | * derived from this software without specific prior written permission. | |
56 | * | |
57 | * Where this Software is combined with software released under the terms of | |
58 | * the GNU General Public License ("GPL") and the terms of the GPL would require the | |
59 | * combined work to also be released under the terms of the GPL, the terms | |
60 | * and conditions of this License will apply in addition to those of the | |
61 | * GPL with the exception of any terms or conditions of this License that | |
62 | * conflict with, or are expressly prohibited by, the GPL. | |
63 | * | |
64 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |
65 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
66 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
67 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR | |
68 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
69 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
70 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
71 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
72 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
73 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
74 | * SUCH DAMAGE. | |
75 | * | |
76 | * $Id: aic7xxx.c,v 1.119 1997/06/27 19:39:18 gibbs Exp $ | |
77 | *--------------------------------------------------------------------------- | |
78 | * | |
79 | * Thanks also go to (in alphabetical order) the following: | |
80 | * | |
81 | * Rory Bolt - Sequencer bug fixes | |
82 | * Jay Estabrook - Initial DEC Alpha support | |
83 | * Doug Ledford - Much needed abort/reset bug fixes | |
84 | * Kai Makisara - DMAing of SCBs | |
85 | * | |
86 | * A Boot time option was also added for not resetting the scsi bus. | |
87 | * | |
88 | * Form: aic7xxx=extended | |
89 | * aic7xxx=no_reset | |
90 | * aic7xxx=ultra | |
91 | * aic7xxx=irq_trigger:[0,1] # 0 edge, 1 level | |
92 | * aic7xxx=verbose | |
93 | * | |
94 | * Daniel M. Eischen, deischen@iworks.InterWorks.org, 1/23/97 | |
95 | * | |
96 | * $Id: aic7xxx.c,v 4.1 1997/06/12 08:23:42 deang Exp $ | |
97 | *-M*************************************************************************/ | |
98 | ||
99 | /*+M************************************************************************** | |
100 | * | |
101 | * Further driver modifications made by Doug Ledford <dledford@redhat.com> | |
102 | * | |
103 | * Copyright (c) 1997-1999 Doug Ledford | |
104 | * | |
105 | * These changes are released under the same licensing terms as the FreeBSD | |
106 | * driver written by Justin Gibbs. Please see his Copyright notice above | |
107 | * for the exact terms and conditions covering my changes as well as the | |
108 | * warranty statement. | |
109 | * | |
110 | * Modifications made to the aic7xxx.c,v 4.1 driver from Dan Eischen include | |
111 | * but are not limited to: | |
112 | * | |
113 | * 1: Import of the latest FreeBSD sequencer code for this driver | |
114 | * 2: Modification of kernel code to accommodate different sequencer semantics | |
115 | * 3: Extensive changes throughout kernel portion of driver to improve | |
116 | * abort/reset processing and error hanndling | |
117 | * 4: Other work contributed by various people on the Internet | |
118 | * 5: Changes to printk information and verbosity selection code | |
119 | * 6: General reliability related changes, especially in IRQ management | |
120 | * 7: Modifications to the default probe/attach order for supported cards | |
121 | * 8: SMP friendliness has been improved | |
122 | * | |
123 | * Overall, this driver represents a significant departure from the official | |
124 | * aic7xxx driver released by Dan Eischen in two ways. First, in the code | |
125 | * itself. A diff between the two version of the driver is now a several | |
126 | * thousand line diff. Second, in approach to solving the same problem. The | |
127 | * problem is importing the FreeBSD aic7xxx driver code to linux can be a | |
128 | * difficult and time consuming process, that also can be error prone. Dan | |
129 | * Eischen's official driver uses the approach that the linux and FreeBSD | |
130 | * drivers should be as identical as possible. To that end, his next version | |
131 | * of this driver will be using a mid-layer code library that he is developing | |
132 | * to moderate communications between the linux mid-level SCSI code and the | |
133 | * low level FreeBSD driver. He intends to be able to essentially drop the | |
134 | * FreeBSD driver into the linux kernel with only a few minor tweaks to some | |
135 | * include files and the like and get things working, making for fast easy | |
136 | * imports of the FreeBSD code into linux. | |
137 | * | |
138 | * I disagree with Dan's approach. Not that I don't think his way of doing | |
139 | * things would be nice, easy to maintain, and create a more uniform driver | |
140 | * between FreeBSD and Linux. I have no objection to those issues. My | |
141 | * disagreement is on the needed functionality. There simply are certain | |
142 | * things that are done differently in FreeBSD than linux that will cause | |
143 | * problems for this driver regardless of any middle ware Dan implements. | |
144 | * The biggest example of this at the moment is interrupt semantics. Linux | |
145 | * doesn't provide the same protection techniques as FreeBSD does, nor can | |
146 | * they be easily implemented in any middle ware code since they would truly | |
147 | * belong in the kernel proper and would effect all drivers. For the time | |
148 | * being, I see issues such as these as major stumbling blocks to the | |
149 | * reliability of code based upon such middle ware. Therefore, I choose to | |
150 | * use a different approach to importing the FreeBSD code that doesn't | |
151 | * involve any middle ware type code. My approach is to import the sequencer | |
152 | * code from FreeBSD wholesale. Then, to only make changes in the kernel | |
153 | * portion of the driver as they are needed for the new sequencer semantics. | |
154 | * In this way, the portion of the driver that speaks to the rest of the | |
155 | * linux kernel is fairly static and can be changed/modified to solve | |
156 | * any problems one might encounter without concern for the FreeBSD driver. | |
157 | * | |
158 | * Note: If time and experience should prove me wrong that the middle ware | |
159 | * code Dan writes is reliable in its operation, then I'll retract my above | |
160 | * statements. But, for those that don't know, I'm from Missouri (in the US) | |
161 | * and our state motto is "The Show-Me State". Well, before I will put | |
162 | * faith into it, you'll have to show me that it works :) | |
163 | * | |
164 | *_M*************************************************************************/ | |
165 | ||
166 | /* | |
167 | * The next three defines are user configurable. These should be the only | |
168 | * defines a user might need to get in here and change. There are other | |
169 | * defines buried deeper in the code, but those really shouldn't need touched | |
170 | * under normal conditions. | |
171 | */ | |
172 | ||
173 | /* | |
174 | * AIC7XXX_STRICT_PCI_SETUP | |
175 | * Should we assume the PCI config options on our controllers are set with | |
176 | * sane and proper values, or should we be anal about our PCI config | |
177 | * registers and force them to what we want? The main advantage to | |
178 | * defining this option is on non-Intel hardware where the BIOS may not | |
179 | * have been run to set things up, or if you have one of the BIOSless | |
180 | * Adaptec controllers, such as a 2910, that don't get set up by the | |
181 | * BIOS. However, keep in mind that we really do set the most important | |
182 | * items in the driver regardless of this setting, this only controls some | |
183 | * of the more esoteric PCI options on these cards. In that sense, I | |
184 | * would default to leaving this off. However, if people wish to try | |
185 | * things both ways, that would also help me to know if there are some | |
186 | * machines where it works one way but not another. | |
187 | * | |
188 | * -- July 7, 17:09 | |
189 | * OK...I need this on my machine for testing, so the default is to | |
190 | * leave it defined. | |
191 | * | |
192 | * -- July 7, 18:49 | |
193 | * I needed it for testing, but it didn't make any difference, so back | |
194 | * off she goes. | |
195 | * | |
196 | * -- July 16, 23:04 | |
197 | * I turned it back on to try and compensate for the 2.1.x PCI code | |
198 | * which no longer relies solely on the BIOS and now tries to set | |
199 | * things itself. | |
200 | */ | |
201 | ||
202 | #define AIC7XXX_STRICT_PCI_SETUP | |
203 | ||
204 | /* | |
205 | * AIC7XXX_VERBOSE_DEBUGGING | |
206 | * This option enables a lot of extra printk();s in the code, surrounded | |
207 | * by if (aic7xxx_verbose ...) statements. Executing all of those if | |
208 | * statements and the extra checks can get to where it actually does have | |
209 | * an impact on CPU usage and such, as well as code size. Disabling this | |
210 | * define will keep some of those from becoming part of the code. | |
211 | * | |
212 | * NOTE: Currently, this option has no real effect, I will be adding the | |
213 | * various #ifdef's in the code later when I've decided a section is | |
214 | * complete and no longer needs debugging. OK...a lot of things are now | |
215 | * surrounded by this define, so turning this off does have an impact. | |
216 | */ | |
217 | ||
218 | /* | |
219 | * #define AIC7XXX_VERBOSE_DEBUGGING | |
220 | */ | |
221 | ||
222 | #include <linux/module.h> | |
223 | #include <stdarg.h> | |
224 | #include <asm/io.h> | |
225 | #include <asm/irq.h> | |
226 | #include <asm/byteorder.h> | |
227 | #include <linux/string.h> | |
228 | #include <linux/errno.h> | |
229 | #include <linux/kernel.h> | |
230 | #include <linux/ioport.h> | |
231 | #include <linux/delay.h> | |
1da177e4 LT |
232 | #include <linux/pci.h> |
233 | #include <linux/proc_fs.h> | |
234 | #include <linux/blkdev.h> | |
235 | #include <linux/init.h> | |
236 | #include <linux/spinlock.h> | |
237 | #include <linux/smp.h> | |
238 | #include <linux/interrupt.h> | |
239 | #include "scsi.h" | |
240 | #include <scsi/scsi_host.h> | |
241 | #include "aic7xxx_old/aic7xxx.h" | |
242 | ||
243 | #include "aic7xxx_old/sequencer.h" | |
244 | #include "aic7xxx_old/scsi_message.h" | |
245 | #include "aic7xxx_old/aic7xxx_reg.h" | |
246 | #include <scsi/scsicam.h> | |
247 | ||
248 | #include <linux/stat.h> | |
249 | #include <linux/slab.h> /* for kmalloc() */ | |
250 | ||
1da177e4 LT |
251 | #define AIC7XXX_C_VERSION "5.2.6" |
252 | ||
253 | #define ALL_TARGETS -1 | |
254 | #define ALL_CHANNELS -1 | |
255 | #define ALL_LUNS -1 | |
256 | #define MAX_TARGETS 16 | |
257 | #define MAX_LUNS 8 | |
258 | #ifndef TRUE | |
259 | # define TRUE 1 | |
260 | #endif | |
261 | #ifndef FALSE | |
262 | # define FALSE 0 | |
263 | #endif | |
264 | ||
265 | #if defined(__powerpc__) || defined(__i386__) || defined(__x86_64__) | |
266 | # define MMAPIO | |
267 | #endif | |
268 | ||
269 | /* | |
270 | * You can try raising me for better performance or lowering me if you have | |
271 | * flaky devices that go off the scsi bus when hit with too many tagged | |
272 | * commands (like some IBM SCSI-3 LVD drives). | |
273 | */ | |
274 | #define AIC7XXX_CMDS_PER_DEVICE 32 | |
275 | ||
276 | typedef struct | |
277 | { | |
278 | unsigned char tag_commands[16]; /* Allow for wide/twin adapters. */ | |
279 | } adapter_tag_info_t; | |
280 | ||
281 | /* | |
282 | * Make a define that will tell the driver not to the default tag depth | |
283 | * everywhere. | |
284 | */ | |
285 | #define DEFAULT_TAG_COMMANDS {0, 0, 0, 0, 0, 0, 0, 0,\ | |
286 | 0, 0, 0, 0, 0, 0, 0, 0} | |
287 | ||
288 | /* | |
289 | * Modify this as you see fit for your system. By setting tag_commands | |
290 | * to 0, the driver will use it's own algorithm for determining the | |
291 | * number of commands to use (see above). When 255, the driver will | |
292 | * not enable tagged queueing for that particular device. When positive | |
293 | * (> 0) and (< 255) the values in the array are used for the queue_depth. | |
294 | * Note that the maximum value for an entry is 254, but you're insane if | |
295 | * you try to use that many commands on one device. | |
296 | * | |
297 | * In this example, the first line will disable tagged queueing for all | |
298 | * the devices on the first probed aic7xxx adapter. | |
299 | * | |
300 | * The second line enables tagged queueing with 4 commands/LUN for IDs | |
301 | * (1, 2-11, 13-15), disables tagged queueing for ID 12, and tells the | |
302 | * driver to use its own algorithm for ID 1. | |
303 | * | |
304 | * The third line is the same as the first line. | |
305 | * | |
306 | * The fourth line disables tagged queueing for devices 0 and 3. It | |
307 | * enables tagged queueing for the other IDs, with 16 commands/LUN | |
308 | * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for | |
309 | * IDs 2, 5-7, and 9-15. | |
310 | */ | |
311 | ||
312 | /* | |
313 | * NOTE: The below structure is for reference only, the actual structure | |
314 | * to modify in order to change things is found after this fake one. | |
315 | * | |
316 | adapter_tag_info_t aic7xxx_tag_info[] = | |
317 | { | |
318 | {DEFAULT_TAG_COMMANDS}, | |
319 | {{4, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 255, 4, 4, 4}}, | |
320 | {DEFAULT_TAG_COMMANDS}, | |
321 | {{255, 16, 4, 255, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}} | |
322 | }; | |
323 | */ | |
324 | ||
325 | static adapter_tag_info_t aic7xxx_tag_info[] = | |
326 | { | |
327 | {DEFAULT_TAG_COMMANDS}, | |
328 | {DEFAULT_TAG_COMMANDS}, | |
329 | {DEFAULT_TAG_COMMANDS}, | |
330 | {DEFAULT_TAG_COMMANDS}, | |
331 | {DEFAULT_TAG_COMMANDS}, | |
332 | {DEFAULT_TAG_COMMANDS}, | |
333 | {DEFAULT_TAG_COMMANDS}, | |
334 | {DEFAULT_TAG_COMMANDS}, | |
335 | {DEFAULT_TAG_COMMANDS}, | |
336 | {DEFAULT_TAG_COMMANDS}, | |
337 | {DEFAULT_TAG_COMMANDS}, | |
338 | {DEFAULT_TAG_COMMANDS}, | |
339 | {DEFAULT_TAG_COMMANDS}, | |
340 | {DEFAULT_TAG_COMMANDS}, | |
341 | {DEFAULT_TAG_COMMANDS}, | |
342 | {DEFAULT_TAG_COMMANDS} | |
343 | }; | |
344 | ||
345 | ||
346 | /* | |
347 | * Define an array of board names that can be indexed by aha_type. | |
348 | * Don't forget to change this when changing the types! | |
349 | */ | |
350 | static const char *board_names[] = { | |
351 | "AIC-7xxx Unknown", /* AIC_NONE */ | |
352 | "Adaptec AIC-7810 Hardware RAID Controller", /* AIC_7810 */ | |
353 | "Adaptec AIC-7770 SCSI host adapter", /* AIC_7770 */ | |
354 | "Adaptec AHA-274X SCSI host adapter", /* AIC_7771 */ | |
355 | "Adaptec AHA-284X SCSI host adapter", /* AIC_284x */ | |
356 | "Adaptec AIC-7850 SCSI host adapter", /* AIC_7850 */ | |
357 | "Adaptec AIC-7855 SCSI host adapter", /* AIC_7855 */ | |
358 | "Adaptec AIC-7860 Ultra SCSI host adapter", /* AIC_7860 */ | |
359 | "Adaptec AHA-2940A Ultra SCSI host adapter", /* AIC_7861 */ | |
360 | "Adaptec AIC-7870 SCSI host adapter", /* AIC_7870 */ | |
361 | "Adaptec AHA-294X SCSI host adapter", /* AIC_7871 */ | |
362 | "Adaptec AHA-394X SCSI host adapter", /* AIC_7872 */ | |
363 | "Adaptec AHA-398X SCSI host adapter", /* AIC_7873 */ | |
364 | "Adaptec AHA-2944 SCSI host adapter", /* AIC_7874 */ | |
365 | "Adaptec AIC-7880 Ultra SCSI host adapter", /* AIC_7880 */ | |
366 | "Adaptec AHA-294X Ultra SCSI host adapter", /* AIC_7881 */ | |
367 | "Adaptec AHA-394X Ultra SCSI host adapter", /* AIC_7882 */ | |
368 | "Adaptec AHA-398X Ultra SCSI host adapter", /* AIC_7883 */ | |
369 | "Adaptec AHA-2944 Ultra SCSI host adapter", /* AIC_7884 */ | |
370 | "Adaptec AHA-2940UW Pro Ultra SCSI host adapter", /* AIC_7887 */ | |
371 | "Adaptec AIC-7895 Ultra SCSI host adapter", /* AIC_7895 */ | |
372 | "Adaptec AIC-7890/1 Ultra2 SCSI host adapter", /* AIC_7890 */ | |
373 | "Adaptec AHA-293X Ultra2 SCSI host adapter", /* AIC_7890 */ | |
374 | "Adaptec AHA-294X Ultra2 SCSI host adapter", /* AIC_7890 */ | |
375 | "Adaptec AIC-7896/7 Ultra2 SCSI host adapter", /* AIC_7896 */ | |
376 | "Adaptec AHA-394X Ultra2 SCSI host adapter", /* AIC_7897 */ | |
377 | "Adaptec AHA-395X Ultra2 SCSI host adapter", /* AIC_7897 */ | |
378 | "Adaptec PCMCIA SCSI controller", /* card bus stuff */ | |
379 | "Adaptec AIC-7892 Ultra 160/m SCSI host adapter", /* AIC_7892 */ | |
380 | "Adaptec AIC-7899 Ultra 160/m SCSI host adapter", /* AIC_7899 */ | |
381 | }; | |
382 | ||
383 | /* | |
384 | * There should be a specific return value for this in scsi.h, but | |
385 | * it seems that most drivers ignore it. | |
386 | */ | |
387 | #define DID_UNDERFLOW DID_ERROR | |
388 | ||
389 | /* | |
390 | * What we want to do is have the higher level scsi driver requeue | |
391 | * the command to us. There is no specific driver status for this | |
392 | * condition, but the higher level scsi driver will requeue the | |
393 | * command on a DID_BUS_BUSY error. | |
394 | * | |
395 | * Upon further inspection and testing, it seems that DID_BUS_BUSY | |
396 | * will *always* retry the command. We can get into an infinite loop | |
397 | * if this happens when we really want some sort of counter that | |
398 | * will automatically abort/reset the command after so many retries. | |
399 | * Using DID_ERROR will do just that. (Made by a suggestion by | |
400 | * Doug Ledford 8/1/96) | |
401 | */ | |
402 | #define DID_RETRY_COMMAND DID_ERROR | |
403 | ||
404 | #define HSCSIID 0x07 | |
405 | #define SCSI_RESET 0x040 | |
406 | ||
407 | /* | |
408 | * EISA/VL-bus stuff | |
409 | */ | |
410 | #define MINSLOT 1 | |
411 | #define MAXSLOT 15 | |
412 | #define SLOTBASE(x) ((x) << 12) | |
413 | #define BASE_TO_SLOT(x) ((x) >> 12) | |
414 | ||
415 | /* | |
416 | * Standard EISA Host ID regs (Offset from slot base) | |
417 | */ | |
418 | #define AHC_HID0 0x80 /* 0,1: msb of ID2, 2-7: ID1 */ | |
419 | #define AHC_HID1 0x81 /* 0-4: ID3, 5-7: LSB ID2 */ | |
420 | #define AHC_HID2 0x82 /* product */ | |
421 | #define AHC_HID3 0x83 /* firmware revision */ | |
422 | ||
423 | /* | |
424 | * AIC-7770 I/O range to reserve for a card | |
425 | */ | |
426 | #define MINREG 0xC00 | |
427 | #define MAXREG 0xCFF | |
428 | ||
429 | #define INTDEF 0x5C /* Interrupt Definition Register */ | |
430 | ||
431 | /* | |
432 | * AIC-78X0 PCI registers | |
433 | */ | |
434 | #define CLASS_PROGIF_REVID 0x08 | |
435 | #define DEVREVID 0x000000FFul | |
436 | #define PROGINFC 0x0000FF00ul | |
437 | #define SUBCLASS 0x00FF0000ul | |
438 | #define BASECLASS 0xFF000000ul | |
439 | ||
440 | #define CSIZE_LATTIME 0x0C | |
441 | #define CACHESIZE 0x0000003Ful /* only 5 bits */ | |
442 | #define LATTIME 0x0000FF00ul | |
443 | ||
444 | #define DEVCONFIG 0x40 | |
445 | #define SCBSIZE32 0x00010000ul /* aic789X only */ | |
446 | #define MPORTMODE 0x00000400ul /* aic7870 only */ | |
447 | #define RAMPSM 0x00000200ul /* aic7870 only */ | |
448 | #define RAMPSM_ULTRA2 0x00000004 | |
449 | #define VOLSENSE 0x00000100ul | |
450 | #define SCBRAMSEL 0x00000080ul | |
451 | #define SCBRAMSEL_ULTRA2 0x00000008 | |
452 | #define MRDCEN 0x00000040ul | |
453 | #define EXTSCBTIME 0x00000020ul /* aic7870 only */ | |
454 | #define EXTSCBPEN 0x00000010ul /* aic7870 only */ | |
455 | #define BERREN 0x00000008ul | |
456 | #define DACEN 0x00000004ul | |
457 | #define STPWLEVEL 0x00000002ul | |
458 | #define DIFACTNEGEN 0x00000001ul /* aic7870 only */ | |
459 | ||
460 | #define SCAMCTL 0x1a /* Ultra2 only */ | |
461 | #define CCSCBBADDR 0xf0 /* aic7895/6/7 */ | |
462 | ||
463 | /* | |
464 | * Define the different types of SEEPROMs on aic7xxx adapters | |
465 | * and make it also represent the address size used in accessing | |
466 | * its registers. The 93C46 chips have 1024 bits organized into | |
467 | * 64 16-bit words, while the 93C56 chips have 2048 bits organized | |
468 | * into 128 16-bit words. The C46 chips use 6 bits to address | |
469 | * each word, while the C56 and C66 (4096 bits) use 8 bits to | |
470 | * address each word. | |
471 | */ | |
472 | typedef enum {C46 = 6, C56_66 = 8} seeprom_chip_type; | |
473 | ||
474 | /* | |
475 | * | |
476 | * Define the format of the SEEPROM registers (16 bits). | |
477 | * | |
478 | */ | |
479 | struct seeprom_config { | |
480 | ||
481 | /* | |
482 | * SCSI ID Configuration Flags | |
483 | */ | |
484 | #define CFXFER 0x0007 /* synchronous transfer rate */ | |
485 | #define CFSYNCH 0x0008 /* enable synchronous transfer */ | |
486 | #define CFDISC 0x0010 /* enable disconnection */ | |
487 | #define CFWIDEB 0x0020 /* wide bus device (wide card) */ | |
488 | #define CFSYNCHISULTRA 0x0040 /* CFSYNC is an ultra offset */ | |
489 | #define CFNEWULTRAFORMAT 0x0080 /* Use the Ultra2 SEEPROM format */ | |
490 | #define CFSTART 0x0100 /* send start unit SCSI command */ | |
491 | #define CFINCBIOS 0x0200 /* include in BIOS scan */ | |
492 | #define CFRNFOUND 0x0400 /* report even if not found */ | |
493 | #define CFMULTILUN 0x0800 /* probe mult luns in BIOS scan */ | |
494 | #define CFWBCACHEYES 0x4000 /* Enable W-Behind Cache on drive */ | |
495 | #define CFWBCACHENC 0xc000 /* Don't change W-Behind Cache */ | |
496 | /* UNUSED 0x3000 */ | |
497 | unsigned short device_flags[16]; /* words 0-15 */ | |
498 | ||
499 | /* | |
500 | * BIOS Control Bits | |
501 | */ | |
502 | #define CFSUPREM 0x0001 /* support all removable drives */ | |
503 | #define CFSUPREMB 0x0002 /* support removable drives for boot only */ | |
504 | #define CFBIOSEN 0x0004 /* BIOS enabled */ | |
505 | /* UNUSED 0x0008 */ | |
506 | #define CFSM2DRV 0x0010 /* support more than two drives */ | |
507 | #define CF284XEXTEND 0x0020 /* extended translation (284x cards) */ | |
508 | /* UNUSED 0x0040 */ | |
509 | #define CFEXTEND 0x0080 /* extended translation enabled */ | |
510 | /* UNUSED 0xFF00 */ | |
511 | unsigned short bios_control; /* word 16 */ | |
512 | ||
513 | /* | |
514 | * Host Adapter Control Bits | |
515 | */ | |
516 | #define CFAUTOTERM 0x0001 /* Perform Auto termination */ | |
517 | #define CFULTRAEN 0x0002 /* Ultra SCSI speed enable (Ultra cards) */ | |
518 | #define CF284XSELTO 0x0003 /* Selection timeout (284x cards) */ | |
519 | #define CF284XFIFO 0x000C /* FIFO Threshold (284x cards) */ | |
520 | #define CFSTERM 0x0004 /* SCSI low byte termination */ | |
521 | #define CFWSTERM 0x0008 /* SCSI high byte termination (wide card) */ | |
522 | #define CFSPARITY 0x0010 /* SCSI parity */ | |
523 | #define CF284XSTERM 0x0020 /* SCSI low byte termination (284x cards) */ | |
524 | #define CFRESETB 0x0040 /* reset SCSI bus at boot */ | |
525 | #define CFBPRIMARY 0x0100 /* Channel B primary on 7895 chipsets */ | |
526 | #define CFSEAUTOTERM 0x0400 /* aic7890 Perform SE Auto Term */ | |
527 | #define CFLVDSTERM 0x0800 /* aic7890 LVD Termination */ | |
528 | /* UNUSED 0xF280 */ | |
529 | unsigned short adapter_control; /* word 17 */ | |
530 | ||
531 | /* | |
532 | * Bus Release, Host Adapter ID | |
533 | */ | |
534 | #define CFSCSIID 0x000F /* host adapter SCSI ID */ | |
535 | /* UNUSED 0x00F0 */ | |
536 | #define CFBRTIME 0xFF00 /* bus release time */ | |
537 | unsigned short brtime_id; /* word 18 */ | |
538 | ||
539 | /* | |
540 | * Maximum targets | |
541 | */ | |
542 | #define CFMAXTARG 0x00FF /* maximum targets */ | |
543 | /* UNUSED 0xFF00 */ | |
544 | unsigned short max_targets; /* word 19 */ | |
545 | ||
546 | unsigned short res_1[11]; /* words 20-30 */ | |
547 | unsigned short checksum; /* word 31 */ | |
548 | }; | |
549 | ||
550 | #define SELBUS_MASK 0x0a | |
551 | #define SELNARROW 0x00 | |
552 | #define SELBUSB 0x08 | |
553 | #define SINGLE_BUS 0x00 | |
554 | ||
555 | #define SCB_TARGET(scb) \ | |
556 | (((scb)->hscb->target_channel_lun & TID) >> 4) | |
557 | #define SCB_LUN(scb) \ | |
558 | ((scb)->hscb->target_channel_lun & LID) | |
559 | #define SCB_IS_SCSIBUS_B(scb) \ | |
560 | (((scb)->hscb->target_channel_lun & SELBUSB) != 0) | |
561 | ||
562 | /* | |
563 | * If an error occurs during a data transfer phase, run the command | |
564 | * to completion - it's easier that way - making a note of the error | |
565 | * condition in this location. This then will modify a DID_OK status | |
566 | * into an appropriate error for the higher-level SCSI code. | |
567 | */ | |
568 | #define aic7xxx_error(cmd) ((cmd)->SCp.Status) | |
569 | ||
570 | /* | |
571 | * Keep track of the targets returned status. | |
572 | */ | |
573 | #define aic7xxx_status(cmd) ((cmd)->SCp.sent_command) | |
574 | ||
575 | /* | |
576 | * The position of the SCSI commands scb within the scb array. | |
577 | */ | |
578 | #define aic7xxx_position(cmd) ((cmd)->SCp.have_data_in) | |
579 | ||
580 | /* | |
581 | * The stored DMA mapping for single-buffer data transfers. | |
582 | */ | |
583 | #define aic7xxx_mapping(cmd) ((cmd)->SCp.phase) | |
584 | ||
585 | /* | |
586 | * Get out private data area from a scsi cmd pointer | |
587 | */ | |
588 | #define AIC_DEV(cmd) ((struct aic_dev_data *)(cmd)->device->hostdata) | |
589 | ||
590 | /* | |
591 | * So we can keep track of our host structs | |
592 | */ | |
593 | static struct aic7xxx_host *first_aic7xxx = NULL; | |
594 | ||
595 | /* | |
596 | * As of Linux 2.1, the mid-level SCSI code uses virtual addresses | |
597 | * in the scatter-gather lists. We need to convert the virtual | |
598 | * addresses to physical addresses. | |
599 | */ | |
600 | struct hw_scatterlist { | |
601 | unsigned int address; | |
602 | unsigned int length; | |
603 | }; | |
604 | ||
605 | /* | |
606 | * Maximum number of SG segments these cards can support. | |
607 | */ | |
608 | #define AIC7XXX_MAX_SG 128 | |
609 | ||
610 | /* | |
611 | * The maximum number of SCBs we could have for ANY type | |
612 | * of card. DON'T FORGET TO CHANGE THE SCB MASK IN THE | |
613 | * SEQUENCER CODE IF THIS IS MODIFIED! | |
614 | */ | |
615 | #define AIC7XXX_MAXSCB 255 | |
616 | ||
617 | ||
618 | struct aic7xxx_hwscb { | |
619 | /* ------------ Begin hardware supported fields ---------------- */ | |
620 | /* 0*/ unsigned char control; | |
621 | /* 1*/ unsigned char target_channel_lun; /* 4/1/3 bits */ | |
622 | /* 2*/ unsigned char target_status; | |
623 | /* 3*/ unsigned char SG_segment_count; | |
624 | /* 4*/ unsigned int SG_list_pointer; | |
625 | /* 8*/ unsigned char residual_SG_segment_count; | |
626 | /* 9*/ unsigned char residual_data_count[3]; | |
627 | /*12*/ unsigned int data_pointer; | |
628 | /*16*/ unsigned int data_count; | |
629 | /*20*/ unsigned int SCSI_cmd_pointer; | |
630 | /*24*/ unsigned char SCSI_cmd_length; | |
631 | /*25*/ unsigned char tag; /* Index into our kernel SCB array. | |
632 | * Also used as the tag for tagged I/O | |
633 | */ | |
634 | #define SCB_PIO_TRANSFER_SIZE 26 /* amount we need to upload/download | |
635 | * via PIO to initialize a transaction. | |
636 | */ | |
637 | /*26*/ unsigned char next; /* Used to thread SCBs awaiting selection | |
638 | * or disconnected down in the sequencer. | |
639 | */ | |
640 | /*27*/ unsigned char prev; | |
641 | /*28*/ unsigned int pad; /* | |
642 | * Unused by the kernel, but we require | |
643 | * the padding so that the array of | |
644 | * hardware SCBs is aligned on 32 byte | |
645 | * boundaries so the sequencer can index | |
646 | */ | |
647 | }; | |
648 | ||
649 | typedef enum { | |
650 | SCB_FREE = 0x0000, | |
651 | SCB_DTR_SCB = 0x0001, | |
652 | SCB_WAITINGQ = 0x0002, | |
653 | SCB_ACTIVE = 0x0004, | |
654 | SCB_SENSE = 0x0008, | |
655 | SCB_ABORT = 0x0010, | |
656 | SCB_DEVICE_RESET = 0x0020, | |
657 | SCB_RESET = 0x0040, | |
658 | SCB_RECOVERY_SCB = 0x0080, | |
659 | SCB_MSGOUT_PPR = 0x0100, | |
660 | SCB_MSGOUT_SENT = 0x0200, | |
661 | SCB_MSGOUT_SDTR = 0x0400, | |
662 | SCB_MSGOUT_WDTR = 0x0800, | |
663 | SCB_MSGOUT_BITS = SCB_MSGOUT_PPR | | |
664 | SCB_MSGOUT_SENT | | |
665 | SCB_MSGOUT_SDTR | | |
666 | SCB_MSGOUT_WDTR, | |
667 | SCB_QUEUED_ABORT = 0x1000, | |
668 | SCB_QUEUED_FOR_DONE = 0x2000, | |
669 | SCB_WAS_BUSY = 0x4000, | |
670 | SCB_QUEUE_FULL = 0x8000 | |
671 | } scb_flag_type; | |
672 | ||
673 | typedef enum { | |
674 | AHC_FNONE = 0x00000000, | |
675 | AHC_PAGESCBS = 0x00000001, | |
676 | AHC_CHANNEL_B_PRIMARY = 0x00000002, | |
677 | AHC_USEDEFAULTS = 0x00000004, | |
678 | AHC_INDIRECT_PAGING = 0x00000008, | |
679 | AHC_CHNLB = 0x00000020, | |
680 | AHC_CHNLC = 0x00000040, | |
681 | AHC_EXTEND_TRANS_A = 0x00000100, | |
682 | AHC_EXTEND_TRANS_B = 0x00000200, | |
683 | AHC_TERM_ENB_A = 0x00000400, | |
684 | AHC_TERM_ENB_SE_LOW = 0x00000400, | |
685 | AHC_TERM_ENB_B = 0x00000800, | |
686 | AHC_TERM_ENB_SE_HIGH = 0x00000800, | |
687 | AHC_HANDLING_REQINITS = 0x00001000, | |
688 | AHC_TARGETMODE = 0x00002000, | |
689 | AHC_NEWEEPROM_FMT = 0x00004000, | |
690 | /* | |
691 | * Here ends the FreeBSD defined flags and here begins the linux defined | |
692 | * flags. NOTE: I did not preserve the old flag name during this change | |
693 | * specifically to force me to evaluate what flags were being used properly | |
694 | * and what flags weren't. This way, I could clean up the flag usage on | |
695 | * a use by use basis. Doug Ledford | |
696 | */ | |
697 | AHC_MOTHERBOARD = 0x00020000, | |
698 | AHC_NO_STPWEN = 0x00040000, | |
699 | AHC_RESET_DELAY = 0x00080000, | |
700 | AHC_A_SCANNED = 0x00100000, | |
701 | AHC_B_SCANNED = 0x00200000, | |
702 | AHC_MULTI_CHANNEL = 0x00400000, | |
703 | AHC_BIOS_ENABLED = 0x00800000, | |
704 | AHC_SEEPROM_FOUND = 0x01000000, | |
705 | AHC_TERM_ENB_LVD = 0x02000000, | |
706 | AHC_ABORT_PENDING = 0x04000000, | |
707 | AHC_RESET_PENDING = 0x08000000, | |
708 | #define AHC_IN_ISR_BIT 28 | |
709 | AHC_IN_ISR = 0x10000000, | |
710 | AHC_IN_ABORT = 0x20000000, | |
711 | AHC_IN_RESET = 0x40000000, | |
712 | AHC_EXTERNAL_SRAM = 0x80000000 | |
713 | } ahc_flag_type; | |
714 | ||
715 | typedef enum { | |
716 | AHC_NONE = 0x0000, | |
717 | AHC_CHIPID_MASK = 0x00ff, | |
718 | AHC_AIC7770 = 0x0001, | |
719 | AHC_AIC7850 = 0x0002, | |
720 | AHC_AIC7860 = 0x0003, | |
721 | AHC_AIC7870 = 0x0004, | |
722 | AHC_AIC7880 = 0x0005, | |
723 | AHC_AIC7890 = 0x0006, | |
724 | AHC_AIC7895 = 0x0007, | |
725 | AHC_AIC7896 = 0x0008, | |
726 | AHC_AIC7892 = 0x0009, | |
727 | AHC_AIC7899 = 0x000a, | |
728 | AHC_VL = 0x0100, | |
729 | AHC_EISA = 0x0200, | |
730 | AHC_PCI = 0x0400, | |
731 | } ahc_chip; | |
732 | ||
733 | typedef enum { | |
734 | AHC_FENONE = 0x0000, | |
735 | AHC_ULTRA = 0x0001, | |
736 | AHC_ULTRA2 = 0x0002, | |
737 | AHC_WIDE = 0x0004, | |
738 | AHC_TWIN = 0x0008, | |
739 | AHC_MORE_SRAM = 0x0010, | |
740 | AHC_CMD_CHAN = 0x0020, | |
741 | AHC_QUEUE_REGS = 0x0040, | |
742 | AHC_SG_PRELOAD = 0x0080, | |
743 | AHC_SPIOCAP = 0x0100, | |
744 | AHC_ULTRA3 = 0x0200, | |
745 | AHC_NEW_AUTOTERM = 0x0400, | |
746 | AHC_AIC7770_FE = AHC_FENONE, | |
747 | AHC_AIC7850_FE = AHC_SPIOCAP, | |
748 | AHC_AIC7860_FE = AHC_ULTRA|AHC_SPIOCAP, | |
749 | AHC_AIC7870_FE = AHC_FENONE, | |
750 | AHC_AIC7880_FE = AHC_ULTRA, | |
751 | AHC_AIC7890_FE = AHC_MORE_SRAM|AHC_CMD_CHAN|AHC_ULTRA2| | |
752 | AHC_QUEUE_REGS|AHC_SG_PRELOAD|AHC_NEW_AUTOTERM, | |
753 | AHC_AIC7895_FE = AHC_MORE_SRAM|AHC_CMD_CHAN|AHC_ULTRA, | |
754 | AHC_AIC7896_FE = AHC_AIC7890_FE, | |
755 | AHC_AIC7892_FE = AHC_AIC7890_FE|AHC_ULTRA3, | |
756 | AHC_AIC7899_FE = AHC_AIC7890_FE|AHC_ULTRA3, | |
757 | } ahc_feature; | |
758 | ||
759 | #define SCB_DMA_ADDR(scb, addr) ((unsigned long)(addr) + (scb)->scb_dma->dma_offset) | |
760 | ||
761 | struct aic7xxx_scb_dma { | |
762 | unsigned long dma_offset; /* Correction you have to add | |
763 | * to virtual address to get | |
764 | * dma handle in this region */ | |
765 | dma_addr_t dma_address; /* DMA handle of the start, | |
766 | * for unmap */ | |
767 | unsigned int dma_len; /* DMA length */ | |
768 | }; | |
769 | ||
770 | typedef enum { | |
771 | AHC_BUG_NONE = 0x0000, | |
772 | AHC_BUG_TMODE_WIDEODD = 0x0001, | |
773 | AHC_BUG_AUTOFLUSH = 0x0002, | |
774 | AHC_BUG_CACHETHEN = 0x0004, | |
775 | AHC_BUG_CACHETHEN_DIS = 0x0008, | |
776 | AHC_BUG_PCI_2_1_RETRY = 0x0010, | |
777 | AHC_BUG_PCI_MWI = 0x0020, | |
778 | AHC_BUG_SCBCHAN_UPLOAD = 0x0040, | |
779 | } ahc_bugs; | |
780 | ||
781 | struct aic7xxx_scb { | |
c1278289 H |
782 | struct aic7xxx_hwscb *hscb; /* corresponding hardware scb */ |
783 | struct scsi_cmnd *cmd; /* scsi_cmnd for this scb */ | |
784 | struct aic7xxx_scb *q_next; /* next scb in queue */ | |
785 | volatile scb_flag_type flags; /* current state of scb */ | |
786 | struct hw_scatterlist *sg_list; /* SG list in adapter format */ | |
787 | unsigned char tag_action; | |
788 | unsigned char sg_count; | |
789 | unsigned char *sense_cmd; /* | |
790 | * Allocate 6 characters for | |
791 | * sense command. | |
792 | */ | |
793 | unsigned char *cmnd; | |
794 | unsigned int sg_length; /* | |
795 | * We init this during | |
796 | * buildscb so we don't have | |
797 | * to calculate anything during | |
798 | * underflow/overflow/stat code | |
799 | */ | |
800 | void *kmalloc_ptr; | |
801 | struct aic7xxx_scb_dma *scb_dma; | |
1da177e4 LT |
802 | }; |
803 | ||
804 | /* | |
805 | * Define a linked list of SCBs. | |
806 | */ | |
807 | typedef struct { | |
808 | struct aic7xxx_scb *head; | |
809 | struct aic7xxx_scb *tail; | |
810 | } scb_queue_type; | |
811 | ||
812 | static struct { | |
813 | unsigned char errno; | |
814 | const char *errmesg; | |
815 | } hard_error[] = { | |
816 | { ILLHADDR, "Illegal Host Access" }, | |
817 | { ILLSADDR, "Illegal Sequencer Address referenced" }, | |
818 | { ILLOPCODE, "Illegal Opcode in sequencer program" }, | |
819 | { SQPARERR, "Sequencer Ram Parity Error" }, | |
820 | { DPARERR, "Data-Path Ram Parity Error" }, | |
821 | { MPARERR, "Scratch Ram/SCB Array Ram Parity Error" }, | |
822 | { PCIERRSTAT,"PCI Error detected" }, | |
823 | { CIOPARERR, "CIOBUS Parity Error" } | |
824 | }; | |
825 | ||
826 | static unsigned char | |
827 | generic_sense[] = { REQUEST_SENSE, 0, 0, 0, 255, 0 }; | |
828 | ||
829 | typedef struct { | |
830 | scb_queue_type free_scbs; /* | |
831 | * SCBs assigned to free slot on | |
832 | * card (no paging required) | |
833 | */ | |
834 | struct aic7xxx_scb *scb_array[AIC7XXX_MAXSCB]; | |
835 | struct aic7xxx_hwscb *hscbs; | |
836 | unsigned char numscbs; /* current number of scbs */ | |
837 | unsigned char maxhscbs; /* hardware scbs */ | |
838 | unsigned char maxscbs; /* max scbs including pageable scbs */ | |
839 | dma_addr_t hscbs_dma; /* DMA handle to hscbs */ | |
840 | unsigned int hscbs_dma_len; /* length of the above DMA area */ | |
841 | void *hscb_kmalloc_ptr; | |
842 | } scb_data_type; | |
843 | ||
844 | struct target_cmd { | |
845 | unsigned char mesg_bytes[4]; | |
846 | unsigned char command[28]; | |
847 | }; | |
848 | ||
849 | #define AHC_TRANS_CUR 0x0001 | |
850 | #define AHC_TRANS_ACTIVE 0x0002 | |
851 | #define AHC_TRANS_GOAL 0x0004 | |
852 | #define AHC_TRANS_USER 0x0008 | |
853 | #define AHC_TRANS_QUITE 0x0010 | |
854 | typedef struct { | |
855 | unsigned char width; | |
856 | unsigned char period; | |
857 | unsigned char offset; | |
858 | unsigned char options; | |
859 | } transinfo_type; | |
860 | ||
861 | struct aic_dev_data { | |
862 | volatile scb_queue_type delayed_scbs; | |
863 | volatile unsigned short temp_q_depth; | |
864 | unsigned short max_q_depth; | |
865 | volatile unsigned char active_cmds; | |
866 | /* | |
867 | * Statistics Kept: | |
868 | * | |
869 | * Total Xfers (count for each command that has a data xfer), | |
870 | * broken down by reads && writes. | |
871 | * | |
872 | * Further sorted into a few bins for keeping tabs on how many commands | |
873 | * we get of various sizes. | |
874 | * | |
875 | */ | |
876 | long w_total; /* total writes */ | |
877 | long r_total; /* total reads */ | |
878 | long barrier_total; /* total num of REQ_BARRIER commands */ | |
879 | long ordered_total; /* How many REQ_BARRIER commands we | |
880 | used ordered tags to satisfy */ | |
881 | long w_bins[6]; /* binned write */ | |
882 | long r_bins[6]; /* binned reads */ | |
883 | transinfo_type cur; | |
884 | transinfo_type goal; | |
885 | #define BUS_DEVICE_RESET_PENDING 0x01 | |
886 | #define DEVICE_RESET_DELAY 0x02 | |
887 | #define DEVICE_PRINT_DTR 0x04 | |
888 | #define DEVICE_WAS_BUSY 0x08 | |
889 | #define DEVICE_DTR_SCANNED 0x10 | |
890 | #define DEVICE_SCSI_3 0x20 | |
891 | volatile unsigned char flags; | |
892 | unsigned needppr:1; | |
893 | unsigned needppr_copy:1; | |
894 | unsigned needsdtr:1; | |
895 | unsigned needsdtr_copy:1; | |
896 | unsigned needwdtr:1; | |
897 | unsigned needwdtr_copy:1; | |
898 | unsigned dtr_pending:1; | |
899 | struct scsi_device *SDptr; | |
900 | struct list_head list; | |
901 | }; | |
902 | ||
903 | /* | |
904 | * Define a structure used for each host adapter. Note, in order to avoid | |
905 | * problems with architectures I can't test on (because I don't have one, | |
906 | * such as the Alpha based systems) which happen to give faults for | |
907 | * non-aligned memory accesses, care was taken to align this structure | |
908 | * in a way that gauranteed all accesses larger than 8 bits were aligned | |
909 | * on the appropriate boundary. It's also organized to try and be more | |
910 | * cache line efficient. Be careful when changing this lest you might hurt | |
911 | * overall performance and bring down the wrath of the masses. | |
912 | */ | |
913 | struct aic7xxx_host { | |
914 | /* | |
915 | * This is the first 64 bytes in the host struct | |
916 | */ | |
917 | ||
918 | /* | |
919 | * We are grouping things here....first, items that get either read or | |
920 | * written with nearly every interrupt | |
921 | */ | |
c1278289 H |
922 | volatile long flags; |
923 | ahc_feature features; /* chip features */ | |
924 | unsigned long base; /* card base address */ | |
925 | volatile unsigned char __iomem *maddr; /* memory mapped address */ | |
926 | unsigned long isr_count; /* Interrupt count */ | |
927 | unsigned long spurious_int; | |
928 | scb_data_type *scb_data; | |
929 | struct aic7xxx_cmd_queue { | |
930 | struct scsi_cmnd *head; | |
931 | struct scsi_cmnd *tail; | |
932 | } completeq; | |
1da177e4 | 933 | |
c1278289 H |
934 | /* |
935 | * Things read/written on nearly every entry into aic7xxx_queue() | |
936 | */ | |
937 | volatile scb_queue_type waiting_scbs; | |
938 | unsigned char unpause; /* unpause value for HCNTRL */ | |
939 | unsigned char pause; /* pause value for HCNTRL */ | |
940 | volatile unsigned char qoutfifonext; | |
941 | volatile unsigned char activescbs; /* active scbs */ | |
942 | volatile unsigned char max_activescbs; | |
943 | volatile unsigned char qinfifonext; | |
944 | volatile unsigned char *untagged_scbs; | |
945 | volatile unsigned char *qoutfifo; | |
946 | volatile unsigned char *qinfifo; | |
947 | ||
948 | unsigned char dev_last_queue_full[MAX_TARGETS]; | |
949 | unsigned char dev_last_queue_full_count[MAX_TARGETS]; | |
950 | unsigned short ultraenb; /* Gets downloaded to card as a bitmap */ | |
951 | unsigned short discenable; /* Gets downloaded to card as a bitmap */ | |
952 | transinfo_type user[MAX_TARGETS]; | |
953 | ||
954 | unsigned char msg_buf[13]; /* The message for the target */ | |
955 | unsigned char msg_type; | |
1da177e4 LT |
956 | #define MSG_TYPE_NONE 0x00 |
957 | #define MSG_TYPE_INITIATOR_MSGOUT 0x01 | |
958 | #define MSG_TYPE_INITIATOR_MSGIN 0x02 | |
c1278289 H |
959 | unsigned char msg_len; /* Length of message */ |
960 | unsigned char msg_index; /* Index into msg_buf array */ | |
1da177e4 LT |
961 | |
962 | ||
c1278289 H |
963 | /* |
964 | * We put the less frequently used host structure items | |
965 | * after the more frequently used items to try and ease | |
966 | * the burden on the cache subsystem. | |
967 | * These entries are not *commonly* accessed, whereas | |
968 | * the preceding entries are accessed very often. | |
969 | */ | |
1da177e4 | 970 | |
c1278289 H |
971 | unsigned int irq; /* IRQ for this adapter */ |
972 | int instance; /* aic7xxx instance number */ | |
973 | int scsi_id; /* host adapter SCSI ID */ | |
974 | int scsi_id_b; /* channel B for twin adapters */ | |
975 | unsigned int bios_address; | |
976 | int board_name_index; | |
977 | unsigned short bios_control; /* bios control - SEEPROM */ | |
978 | unsigned short adapter_control; /* adapter control - SEEPROM */ | |
979 | struct pci_dev *pdev; | |
980 | unsigned char pci_bus; | |
981 | unsigned char pci_device_fn; | |
982 | struct seeprom_config sc; | |
983 | unsigned short sc_type; | |
984 | unsigned short sc_size; | |
985 | struct aic7xxx_host *next; /* allow for multiple IRQs */ | |
986 | struct Scsi_Host *host; /* pointer to scsi host */ | |
987 | struct list_head aic_devs; /* all aic_dev structs on host */ | |
988 | int host_no; /* SCSI host number */ | |
989 | unsigned long mbase; /* I/O memory address */ | |
990 | ahc_chip chip; /* chip type */ | |
991 | ahc_bugs bugs; | |
992 | dma_addr_t fifo_dma; /* DMA handle for fifo arrays */ | |
1da177e4 LT |
993 | }; |
994 | ||
995 | /* | |
996 | * Valid SCSIRATE values. (p. 3-17) | |
997 | * Provides a mapping of transfer periods in ns/4 to the proper value to | |
998 | * stick in the SCSIRATE reg to use that transfer rate. | |
999 | */ | |
1000 | #define AHC_SYNCRATE_ULTRA3 0 | |
1001 | #define AHC_SYNCRATE_ULTRA2 1 | |
1002 | #define AHC_SYNCRATE_ULTRA 3 | |
1003 | #define AHC_SYNCRATE_FAST 6 | |
1004 | #define AHC_SYNCRATE_CRC 0x40 | |
1005 | #define AHC_SYNCRATE_SE 0x10 | |
1006 | static struct aic7xxx_syncrate { | |
1007 | /* Rates in Ultra mode have bit 8 of sxfr set */ | |
1008 | #define ULTRA_SXFR 0x100 | |
1009 | int sxfr_ultra2; | |
1010 | int sxfr; | |
1011 | unsigned char period; | |
1012 | const char *rate[2]; | |
1013 | } aic7xxx_syncrates[] = { | |
1014 | { 0x42, 0x000, 9, {"80.0", "160.0"} }, | |
1015 | { 0x13, 0x000, 10, {"40.0", "80.0"} }, | |
1016 | { 0x14, 0x000, 11, {"33.0", "66.6"} }, | |
1017 | { 0x15, 0x100, 12, {"20.0", "40.0"} }, | |
1018 | { 0x16, 0x110, 15, {"16.0", "32.0"} }, | |
1019 | { 0x17, 0x120, 18, {"13.4", "26.8"} }, | |
1020 | { 0x18, 0x000, 25, {"10.0", "20.0"} }, | |
1021 | { 0x19, 0x010, 31, {"8.0", "16.0"} }, | |
1022 | { 0x1a, 0x020, 37, {"6.67", "13.3"} }, | |
1023 | { 0x1b, 0x030, 43, {"5.7", "11.4"} }, | |
1024 | { 0x10, 0x040, 50, {"5.0", "10.0"} }, | |
1025 | { 0x00, 0x050, 56, {"4.4", "8.8" } }, | |
1026 | { 0x00, 0x060, 62, {"4.0", "8.0" } }, | |
1027 | { 0x00, 0x070, 68, {"3.6", "7.2" } }, | |
1028 | { 0x00, 0x000, 0, {NULL, NULL} }, | |
1029 | }; | |
1030 | ||
1031 | #define CTL_OF_SCB(scb) (((scb->hscb)->target_channel_lun >> 3) & 0x1), \ | |
1032 | (((scb->hscb)->target_channel_lun >> 4) & 0xf), \ | |
1033 | ((scb->hscb)->target_channel_lun & 0x07) | |
1034 | ||
1035 | #define CTL_OF_CMD(cmd) ((cmd->device->channel) & 0x01), \ | |
1036 | ((cmd->device->id) & 0x0f), \ | |
1037 | ((cmd->device->lun) & 0x07) | |
1038 | ||
1039 | #define TARGET_INDEX(cmd) ((cmd)->device->id | ((cmd)->device->channel << 3)) | |
1040 | ||
1041 | /* | |
1042 | * A nice little define to make doing our printks a little easier | |
1043 | */ | |
1044 | ||
1045 | #define WARN_LEAD KERN_WARNING "(scsi%d:%d:%d:%d) " | |
1046 | #define INFO_LEAD KERN_INFO "(scsi%d:%d:%d:%d) " | |
1047 | ||
1048 | /* | |
1049 | * XXX - these options apply unilaterally to _all_ 274x/284x/294x | |
1050 | * cards in the system. This should be fixed. Exceptions to this | |
1051 | * rule are noted in the comments. | |
1052 | */ | |
1053 | ||
1054 | /* | |
1055 | * Use this as the default queue depth when setting tagged queueing on. | |
1056 | */ | |
1057 | static unsigned int aic7xxx_default_queue_depth = AIC7XXX_CMDS_PER_DEVICE; | |
1058 | ||
1059 | /* | |
1060 | * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This | |
1061 | * has no effect on any later resets that might occur due to things like | |
1062 | * SCSI bus timeouts. | |
1063 | */ | |
1064 | static unsigned int aic7xxx_no_reset = 0; | |
1065 | /* | |
1066 | * Certain PCI motherboards will scan PCI devices from highest to lowest, | |
1067 | * others scan from lowest to highest, and they tend to do all kinds of | |
1068 | * strange things when they come into contact with PCI bridge chips. The | |
1069 | * net result of all this is that the PCI card that is actually used to boot | |
1070 | * the machine is very hard to detect. Most motherboards go from lowest | |
1071 | * PCI slot number to highest, and the first SCSI controller found is the | |
1072 | * one you boot from. The only exceptions to this are when a controller | |
1073 | * has its BIOS disabled. So, we by default sort all of our SCSI controllers | |
1074 | * from lowest PCI slot number to highest PCI slot number. We also force | |
1075 | * all controllers with their BIOS disabled to the end of the list. This | |
1076 | * works on *almost* all computers. Where it doesn't work, we have this | |
1077 | * option. Setting this option to non-0 will reverse the order of the sort | |
1078 | * to highest first, then lowest, but will still leave cards with their BIOS | |
1079 | * disabled at the very end. That should fix everyone up unless there are | |
1080 | * really strange cirumstances. | |
1081 | */ | |
1082 | static int aic7xxx_reverse_scan = 0; | |
1083 | /* | |
1084 | * Should we force EXTENDED translation on a controller. | |
1085 | * 0 == Use whatever is in the SEEPROM or default to off | |
1086 | * 1 == Use whatever is in the SEEPROM or default to on | |
1087 | */ | |
1088 | static unsigned int aic7xxx_extended = 0; | |
1089 | /* | |
1090 | * The IRQ trigger method used on EISA controllers. Does not effect PCI cards. | |
1091 | * -1 = Use detected settings. | |
1092 | * 0 = Force Edge triggered mode. | |
1093 | * 1 = Force Level triggered mode. | |
1094 | */ | |
1095 | static int aic7xxx_irq_trigger = -1; | |
1096 | /* | |
1097 | * This variable is used to override the termination settings on a controller. | |
1098 | * This should not be used under normal conditions. However, in the case | |
1099 | * that a controller does not have a readable SEEPROM (so that we can't | |
1100 | * read the SEEPROM settings directly) and that a controller has a buggered | |
1101 | * version of the cable detection logic, this can be used to force the | |
1102 | * correct termination. It is preferable to use the manual termination | |
1103 | * settings in the BIOS if possible, but some motherboard controllers store | |
1104 | * those settings in a format we can't read. In other cases, auto term | |
1105 | * should also work, but the chipset was put together with no auto term | |
1106 | * logic (common on motherboard controllers). In those cases, we have | |
1107 | * 32 bits here to work with. That's good for 8 controllers/channels. The | |
1108 | * bits are organized as 4 bits per channel, with scsi0 getting the lowest | |
1109 | * 4 bits in the int. A 1 in a bit position indicates the termination setting | |
1110 | * that corresponds to that bit should be enabled, a 0 is disabled. | |
1111 | * It looks something like this: | |
1112 | * | |
1113 | * 0x0f = 1111-Single Ended Low Byte Termination on/off | |
1114 | * ||\-Single Ended High Byte Termination on/off | |
1115 | * |\-LVD Low Byte Termination on/off | |
1116 | * \-LVD High Byte Termination on/off | |
1117 | * | |
1118 | * For non-Ultra2 controllers, the upper 2 bits are not important. So, to | |
1119 | * enable both high byte and low byte termination on scsi0, I would need to | |
1120 | * make sure that the override_term variable was set to 0x03 (bits 0011). | |
1121 | * To make sure that all termination is enabled on an Ultra2 controller at | |
1122 | * scsi2 and only high byte termination on scsi1 and high and low byte | |
1123 | * termination on scsi0, I would set override_term=0xf23 (bits 1111 0010 0011) | |
1124 | * | |
1125 | * For the most part, users should never have to use this, that's why I | |
1126 | * left it fairly cryptic instead of easy to understand. If you need it, | |
1127 | * most likely someone will be telling you what your's needs to be set to. | |
1128 | */ | |
1129 | static int aic7xxx_override_term = -1; | |
1130 | /* | |
1131 | * Certain motherboard chipset controllers tend to screw | |
1132 | * up the polarity of the term enable output pin. Use this variable | |
1133 | * to force the correct polarity for your system. This is a bitfield variable | |
1134 | * similar to the previous one, but this one has one bit per channel instead | |
1135 | * of four. | |
1136 | * 0 = Force the setting to active low. | |
1137 | * 1 = Force setting to active high. | |
1138 | * Most Adaptec cards are active high, several motherboards are active low. | |
1139 | * To force a 2940 card at SCSI 0 to active high and a motherboard 7895 | |
1140 | * controller at scsi1 and scsi2 to active low, and a 2910 card at scsi3 | |
1141 | * to active high, you would need to set stpwlev=0x9 (bits 1001). | |
1142 | * | |
1143 | * People shouldn't need to use this, but if you are experiencing lots of | |
1144 | * SCSI timeout problems, this may help. There is one sure way to test what | |
1145 | * this option needs to be. Using a boot floppy to boot the system, configure | |
1146 | * your system to enable all SCSI termination (in the Adaptec SCSI BIOS) and | |
1147 | * if needed then also pass a value to override_term to make sure that the | |
1148 | * driver is enabling SCSI termination, then set this variable to either 0 | |
1149 | * or 1. When the driver boots, make sure there are *NO* SCSI cables | |
1150 | * connected to your controller. If it finds and inits the controller | |
1151 | * without problem, then the setting you passed to stpwlev was correct. If | |
1152 | * the driver goes into a reset loop and hangs the system, then you need the | |
1153 | * other setting for this variable. If neither setting lets the machine | |
1154 | * boot then you have definite termination problems that may not be fixable. | |
1155 | */ | |
1156 | static int aic7xxx_stpwlev = -1; | |
1157 | /* | |
1158 | * Set this to non-0 in order to force the driver to panic the kernel | |
1159 | * and print out debugging info on a SCSI abort or reset cycle. | |
1160 | */ | |
1161 | static int aic7xxx_panic_on_abort = 0; | |
1162 | /* | |
1163 | * PCI bus parity checking of the Adaptec controllers. This is somewhat | |
1164 | * dubious at best. To my knowledge, this option has never actually | |
1165 | * solved a PCI parity problem, but on certain machines with broken PCI | |
1166 | * chipset configurations, it can generate tons of false error messages. | |
1167 | * It's included in the driver for completeness. | |
1168 | * 0 = Shut off PCI parity check | |
1169 | * -1 = Normal polarity pci parity checking | |
1170 | * 1 = reverse polarity pci parity checking | |
1171 | * | |
1172 | * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this | |
1173 | * variable to -1 you would actually want to simply pass the variable | |
1174 | * name without a number. That will invert the 0 which will result in | |
1175 | * -1. | |
1176 | */ | |
1177 | static int aic7xxx_pci_parity = 0; | |
1178 | /* | |
1179 | * Set this to any non-0 value to cause us to dump the contents of all | |
1180 | * the card's registers in a hex dump format tailored to each model of | |
1181 | * controller. | |
1182 | * | |
1183 | * NOTE: THE CONTROLLER IS LEFT IN AN UNUSEABLE STATE BY THIS OPTION. | |
1184 | * YOU CANNOT BOOT UP WITH THIS OPTION, IT IS FOR DEBUGGING PURPOSES | |
1185 | * ONLY | |
1186 | */ | |
1187 | static int aic7xxx_dump_card = 0; | |
1188 | /* | |
1189 | * Set this to a non-0 value to make us dump out the 32 bit instruction | |
1190 | * registers on the card after completing the sequencer download. This | |
1191 | * allows the actual sequencer download to be verified. It is possible | |
1192 | * to use this option and still boot up and run your system. This is | |
1193 | * only intended for debugging purposes. | |
1194 | */ | |
1195 | static int aic7xxx_dump_sequencer = 0; | |
1196 | /* | |
1197 | * Certain newer motherboards have put new PCI based devices into the | |
1198 | * IO spaces that used to typically be occupied by VLB or EISA cards. | |
1199 | * This overlap can cause these newer motherboards to lock up when scanned | |
1200 | * for older EISA and VLB devices. Setting this option to non-0 will | |
1201 | * cause the driver to skip scanning for any VLB or EISA controllers and | |
1202 | * only support the PCI controllers. NOTE: this means that if the kernel | |
1203 | * os compiled with PCI support disabled, then setting this to non-0 | |
1204 | * would result in never finding any devices :) | |
1205 | */ | |
1206 | static int aic7xxx_no_probe = 0; | |
1207 | /* | |
1208 | * On some machines, enabling the external SCB RAM isn't reliable yet. I | |
1209 | * haven't had time to make test patches for things like changing the | |
1210 | * timing mode on that external RAM either. Some of those changes may | |
1211 | * fix the problem. Until then though, we default to external SCB RAM | |
1212 | * off and give a command line option to enable it. | |
1213 | */ | |
1214 | static int aic7xxx_scbram = 0; | |
1215 | /* | |
1216 | * So that we can set how long each device is given as a selection timeout. | |
1217 | * The table of values goes like this: | |
1218 | * 0 - 256ms | |
1219 | * 1 - 128ms | |
1220 | * 2 - 64ms | |
1221 | * 3 - 32ms | |
1222 | * We default to 64ms because it's fast. Some old SCSI-I devices need a | |
1223 | * longer time. The final value has to be left shifted by 3, hence 0x10 | |
1224 | * is the final value. | |
1225 | */ | |
1226 | static int aic7xxx_seltime = 0x10; | |
1227 | /* | |
1228 | * So that insmod can find the variable and make it point to something | |
1229 | */ | |
1230 | #ifdef MODULE | |
1231 | static char * aic7xxx = NULL; | |
1232 | module_param(aic7xxx, charp, 0); | |
1233 | #endif | |
1234 | ||
1235 | #define VERBOSE_NORMAL 0x0000 | |
1236 | #define VERBOSE_NEGOTIATION 0x0001 | |
1237 | #define VERBOSE_SEQINT 0x0002 | |
1238 | #define VERBOSE_SCSIINT 0x0004 | |
1239 | #define VERBOSE_PROBE 0x0008 | |
1240 | #define VERBOSE_PROBE2 0x0010 | |
1241 | #define VERBOSE_NEGOTIATION2 0x0020 | |
1242 | #define VERBOSE_MINOR_ERROR 0x0040 | |
1243 | #define VERBOSE_TRACING 0x0080 | |
1244 | #define VERBOSE_ABORT 0x0f00 | |
1245 | #define VERBOSE_ABORT_MID 0x0100 | |
1246 | #define VERBOSE_ABORT_FIND 0x0200 | |
1247 | #define VERBOSE_ABORT_PROCESS 0x0400 | |
1248 | #define VERBOSE_ABORT_RETURN 0x0800 | |
1249 | #define VERBOSE_RESET 0xf000 | |
1250 | #define VERBOSE_RESET_MID 0x1000 | |
1251 | #define VERBOSE_RESET_FIND 0x2000 | |
1252 | #define VERBOSE_RESET_PROCESS 0x4000 | |
1253 | #define VERBOSE_RESET_RETURN 0x8000 | |
1254 | static int aic7xxx_verbose = VERBOSE_NORMAL | VERBOSE_NEGOTIATION | | |
1255 | VERBOSE_PROBE; /* verbose messages */ | |
1256 | ||
1257 | ||
1258 | /**************************************************************************** | |
1259 | * | |
1260 | * We're going to start putting in function declarations so that order of | |
1261 | * functions is no longer important. As needed, they are added here. | |
1262 | * | |
1263 | ***************************************************************************/ | |
1264 | ||
1265 | static int aic7xxx_release(struct Scsi_Host *host); | |
1266 | static void aic7xxx_set_syncrate(struct aic7xxx_host *p, | |
1267 | struct aic7xxx_syncrate *syncrate, int target, int channel, | |
1268 | unsigned int period, unsigned int offset, unsigned char options, | |
1269 | unsigned int type, struct aic_dev_data *aic_dev); | |
1270 | static void aic7xxx_set_width(struct aic7xxx_host *p, int target, int channel, | |
1271 | int lun, unsigned int width, unsigned int type, | |
1272 | struct aic_dev_data *aic_dev); | |
c1278289 | 1273 | static void aic7xxx_panic_abort(struct aic7xxx_host *p, struct scsi_cmnd *cmd); |
1da177e4 LT |
1274 | static void aic7xxx_print_card(struct aic7xxx_host *p); |
1275 | static void aic7xxx_print_scratch_ram(struct aic7xxx_host *p); | |
1276 | static void aic7xxx_print_sequencer(struct aic7xxx_host *p, int downloaded); | |
1277 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
1278 | static void aic7xxx_check_scbs(struct aic7xxx_host *p, char *buffer); | |
1279 | #endif | |
1280 | ||
1281 | /**************************************************************************** | |
1282 | * | |
1283 | * These functions are now used. They happen to be wrapped in useless | |
1284 | * inb/outb port read/writes around the real reads and writes because it | |
1285 | * seems that certain very fast CPUs have a problem dealing with us when | |
1286 | * going at full speed. | |
1287 | * | |
1288 | ***************************************************************************/ | |
1289 | ||
858119e1 | 1290 | static unsigned char |
1da177e4 LT |
1291 | aic_inb(struct aic7xxx_host *p, long port) |
1292 | { | |
1293 | #ifdef MMAPIO | |
1294 | unsigned char x; | |
1295 | if(p->maddr) | |
1296 | { | |
1297 | x = readb(p->maddr + port); | |
1298 | } | |
1299 | else | |
1300 | { | |
1301 | x = inb(p->base + port); | |
1302 | } | |
1303 | return(x); | |
1304 | #else | |
1305 | return(inb(p->base + port)); | |
1306 | #endif | |
1307 | } | |
1308 | ||
858119e1 | 1309 | static void |
1da177e4 LT |
1310 | aic_outb(struct aic7xxx_host *p, unsigned char val, long port) |
1311 | { | |
1312 | #ifdef MMAPIO | |
1313 | if(p->maddr) | |
1314 | { | |
1315 | writeb(val, p->maddr + port); | |
1316 | mb(); /* locked operation in order to force CPU ordering */ | |
1317 | readb(p->maddr + HCNTRL); /* dummy read to flush the PCI write */ | |
1318 | } | |
1319 | else | |
1320 | { | |
1321 | outb(val, p->base + port); | |
1322 | mb(); /* locked operation in order to force CPU ordering */ | |
1323 | } | |
1324 | #else | |
1325 | outb(val, p->base + port); | |
1326 | mb(); /* locked operation in order to force CPU ordering */ | |
1327 | #endif | |
1328 | } | |
1329 | ||
1330 | /*+F************************************************************************* | |
1331 | * Function: | |
1332 | * aic7xxx_setup | |
1333 | * | |
1334 | * Description: | |
1335 | * Handle Linux boot parameters. This routine allows for assigning a value | |
1336 | * to a parameter with a ':' between the parameter and the value. | |
1337 | * ie. aic7xxx=unpause:0x0A,extended | |
1338 | *-F*************************************************************************/ | |
1339 | static int | |
1340 | aic7xxx_setup(char *s) | |
1341 | { | |
1342 | int i, n; | |
1343 | char *p; | |
1344 | char *end; | |
1345 | ||
1346 | static struct { | |
1347 | const char *name; | |
1348 | unsigned int *flag; | |
1349 | } options[] = { | |
1350 | { "extended", &aic7xxx_extended }, | |
1351 | { "no_reset", &aic7xxx_no_reset }, | |
1352 | { "irq_trigger", &aic7xxx_irq_trigger }, | |
1353 | { "verbose", &aic7xxx_verbose }, | |
1354 | { "reverse_scan",&aic7xxx_reverse_scan }, | |
1355 | { "override_term", &aic7xxx_override_term }, | |
1356 | { "stpwlev", &aic7xxx_stpwlev }, | |
1357 | { "no_probe", &aic7xxx_no_probe }, | |
1358 | { "panic_on_abort", &aic7xxx_panic_on_abort }, | |
1359 | { "pci_parity", &aic7xxx_pci_parity }, | |
1360 | { "dump_card", &aic7xxx_dump_card }, | |
1361 | { "dump_sequencer", &aic7xxx_dump_sequencer }, | |
1362 | { "default_queue_depth", &aic7xxx_default_queue_depth }, | |
1363 | { "scbram", &aic7xxx_scbram }, | |
1364 | { "seltime", &aic7xxx_seltime }, | |
1365 | { "tag_info", NULL } | |
1366 | }; | |
1367 | ||
1368 | end = strchr(s, '\0'); | |
1369 | ||
1370 | while ((p = strsep(&s, ",.")) != NULL) | |
1371 | { | |
1372 | for (i = 0; i < ARRAY_SIZE(options); i++) | |
1373 | { | |
1374 | n = strlen(options[i].name); | |
1375 | if (!strncmp(options[i].name, p, n)) | |
1376 | { | |
1377 | if (!strncmp(p, "tag_info", n)) | |
1378 | { | |
1379 | if (p[n] == ':') | |
1380 | { | |
1381 | char *base; | |
1382 | char *tok, *tok_end, *tok_end2; | |
1383 | char tok_list[] = { '.', ',', '{', '}', '\0' }; | |
1384 | int i, instance = -1, device = -1; | |
1385 | unsigned char done = FALSE; | |
1386 | ||
1387 | base = p; | |
1388 | tok = base + n + 1; /* Forward us just past the ':' */ | |
1389 | tok_end = strchr(tok, '\0'); | |
1390 | if (tok_end < end) | |
1391 | *tok_end = ','; | |
1392 | while(!done) | |
1393 | { | |
1394 | switch(*tok) | |
1395 | { | |
1396 | case '{': | |
1397 | if (instance == -1) | |
1398 | instance = 0; | |
1399 | else if (device == -1) | |
1400 | device = 0; | |
1401 | tok++; | |
1402 | break; | |
1403 | case '}': | |
1404 | if (device != -1) | |
1405 | device = -1; | |
1406 | else if (instance != -1) | |
1407 | instance = -1; | |
1408 | tok++; | |
1409 | break; | |
1410 | case ',': | |
1411 | case '.': | |
1412 | if (instance == -1) | |
1413 | done = TRUE; | |
1414 | else if (device >= 0) | |
1415 | device++; | |
1416 | else if (instance >= 0) | |
1417 | instance++; | |
1418 | if ( (device >= MAX_TARGETS) || | |
1419 | (instance >= ARRAY_SIZE(aic7xxx_tag_info)) ) | |
1420 | done = TRUE; | |
1421 | tok++; | |
1422 | if (!done) | |
1423 | { | |
1424 | base = tok; | |
1425 | } | |
1426 | break; | |
1427 | case '\0': | |
1428 | done = TRUE; | |
1429 | break; | |
1430 | default: | |
1431 | done = TRUE; | |
1432 | tok_end = strchr(tok, '\0'); | |
1433 | for(i=0; tok_list[i]; i++) | |
1434 | { | |
1435 | tok_end2 = strchr(tok, tok_list[i]); | |
1436 | if ( (tok_end2) && (tok_end2 < tok_end) ) | |
1437 | { | |
1438 | tok_end = tok_end2; | |
1439 | done = FALSE; | |
1440 | } | |
1441 | } | |
1442 | if ( (instance >= 0) && (device >= 0) && | |
1443 | (instance < ARRAY_SIZE(aic7xxx_tag_info)) && | |
1444 | (device < MAX_TARGETS) ) | |
1445 | aic7xxx_tag_info[instance].tag_commands[device] = | |
1446 | simple_strtoul(tok, NULL, 0) & 0xff; | |
1447 | tok = tok_end; | |
1448 | break; | |
1449 | } | |
1450 | } | |
1451 | while((p != base) && (p != NULL)) | |
1452 | p = strsep(&s, ",."); | |
1453 | } | |
1454 | } | |
1455 | else if (p[n] == ':') | |
1456 | { | |
1457 | *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0); | |
1458 | if(!strncmp(p, "seltime", n)) | |
1459 | { | |
1460 | *(options[i].flag) = (*(options[i].flag) % 4) << 3; | |
1461 | } | |
1462 | } | |
1463 | else if (!strncmp(p, "verbose", n)) | |
1464 | { | |
1465 | *(options[i].flag) = 0xff29; | |
1466 | } | |
1467 | else | |
1468 | { | |
1469 | *(options[i].flag) = ~(*(options[i].flag)); | |
1470 | if(!strncmp(p, "seltime", n)) | |
1471 | { | |
1472 | *(options[i].flag) = (*(options[i].flag) % 4) << 3; | |
1473 | } | |
1474 | } | |
1475 | } | |
1476 | } | |
1477 | } | |
1478 | return 1; | |
1479 | } | |
1480 | ||
1481 | __setup("aic7xxx=", aic7xxx_setup); | |
1482 | ||
1483 | /*+F************************************************************************* | |
1484 | * Function: | |
1485 | * pause_sequencer | |
1486 | * | |
1487 | * Description: | |
1488 | * Pause the sequencer and wait for it to actually stop - this | |
1489 | * is important since the sequencer can disable pausing for critical | |
1490 | * sections. | |
1491 | *-F*************************************************************************/ | |
1492 | static void | |
1493 | pause_sequencer(struct aic7xxx_host *p) | |
1494 | { | |
1495 | aic_outb(p, p->pause, HCNTRL); | |
1496 | while ((aic_inb(p, HCNTRL) & PAUSE) == 0) | |
1497 | { | |
1498 | ; | |
1499 | } | |
1500 | if(p->features & AHC_ULTRA2) | |
1501 | { | |
1502 | aic_inb(p, CCSCBCTL); | |
1503 | } | |
1504 | } | |
1505 | ||
1506 | /*+F************************************************************************* | |
1507 | * Function: | |
1508 | * unpause_sequencer | |
1509 | * | |
1510 | * Description: | |
1511 | * Unpause the sequencer. Unremarkable, yet done often enough to | |
1512 | * warrant an easy way to do it. | |
1513 | *-F*************************************************************************/ | |
1514 | static void | |
1515 | unpause_sequencer(struct aic7xxx_host *p, int unpause_always) | |
1516 | { | |
1517 | if (unpause_always || | |
1518 | ( !(aic_inb(p, INTSTAT) & (SCSIINT | SEQINT | BRKADRINT)) && | |
1519 | !(p->flags & AHC_HANDLING_REQINITS) ) ) | |
1520 | { | |
1521 | aic_outb(p, p->unpause, HCNTRL); | |
1522 | } | |
1523 | } | |
1524 | ||
1525 | /*+F************************************************************************* | |
1526 | * Function: | |
1527 | * restart_sequencer | |
1528 | * | |
1529 | * Description: | |
1530 | * Restart the sequencer program from address zero. This assumes | |
1531 | * that the sequencer is already paused. | |
1532 | *-F*************************************************************************/ | |
1533 | static void | |
1534 | restart_sequencer(struct aic7xxx_host *p) | |
1535 | { | |
1536 | aic_outb(p, 0, SEQADDR0); | |
1537 | aic_outb(p, 0, SEQADDR1); | |
1538 | aic_outb(p, FASTMODE, SEQCTL); | |
1539 | } | |
1540 | ||
1541 | /* | |
1542 | * We include the aic7xxx_seq.c file here so that the other defines have | |
1543 | * already been made, and so that it comes before the code that actually | |
1544 | * downloads the instructions (since we don't typically use function | |
1545 | * prototype, our code has to be ordered that way, it's a left-over from | |
1546 | * the original driver days.....I should fix it some time DL). | |
1547 | */ | |
1548 | #include "aic7xxx_old/aic7xxx_seq.c" | |
1549 | ||
1550 | /*+F************************************************************************* | |
1551 | * Function: | |
1552 | * aic7xxx_check_patch | |
1553 | * | |
1554 | * Description: | |
1555 | * See if the next patch to download should be downloaded. | |
1556 | *-F*************************************************************************/ | |
1557 | static int | |
1558 | aic7xxx_check_patch(struct aic7xxx_host *p, | |
1559 | struct sequencer_patch **start_patch, int start_instr, int *skip_addr) | |
1560 | { | |
1561 | struct sequencer_patch *cur_patch; | |
1562 | struct sequencer_patch *last_patch; | |
1563 | int num_patches; | |
1564 | ||
6391a113 | 1565 | num_patches = ARRAY_SIZE(sequencer_patches); |
1da177e4 LT |
1566 | last_patch = &sequencer_patches[num_patches]; |
1567 | cur_patch = *start_patch; | |
1568 | ||
1569 | while ((cur_patch < last_patch) && (start_instr == cur_patch->begin)) | |
1570 | { | |
1571 | if (cur_patch->patch_func(p) == 0) | |
1572 | { | |
1573 | /* | |
1574 | * Start rejecting code. | |
1575 | */ | |
1576 | *skip_addr = start_instr + cur_patch->skip_instr; | |
1577 | cur_patch += cur_patch->skip_patch; | |
1578 | } | |
1579 | else | |
1580 | { | |
1581 | /* | |
1582 | * Found an OK patch. Advance the patch pointer to the next patch | |
1583 | * and wait for our instruction pointer to get here. | |
1584 | */ | |
1585 | cur_patch++; | |
1586 | } | |
1587 | } | |
1588 | ||
1589 | *start_patch = cur_patch; | |
1590 | if (start_instr < *skip_addr) | |
1591 | /* | |
1592 | * Still skipping | |
1593 | */ | |
1594 | return (0); | |
1595 | return(1); | |
1596 | } | |
1597 | ||
1598 | ||
1599 | /*+F************************************************************************* | |
1600 | * Function: | |
1601 | * aic7xxx_download_instr | |
1602 | * | |
1603 | * Description: | |
1604 | * Find the next patch to download. | |
1605 | *-F*************************************************************************/ | |
1606 | static void | |
1607 | aic7xxx_download_instr(struct aic7xxx_host *p, int instrptr, | |
1608 | unsigned char *dconsts) | |
1609 | { | |
1610 | union ins_formats instr; | |
1611 | struct ins_format1 *fmt1_ins; | |
1612 | struct ins_format3 *fmt3_ins; | |
1613 | unsigned char opcode; | |
1614 | ||
1615 | instr = *(union ins_formats*) &seqprog[instrptr * 4]; | |
1616 | ||
1617 | instr.integer = le32_to_cpu(instr.integer); | |
1618 | ||
1619 | fmt1_ins = &instr.format1; | |
1620 | fmt3_ins = NULL; | |
1621 | ||
1622 | /* Pull the opcode */ | |
1623 | opcode = instr.format1.opcode; | |
1624 | switch (opcode) | |
1625 | { | |
1626 | case AIC_OP_JMP: | |
1627 | case AIC_OP_JC: | |
1628 | case AIC_OP_JNC: | |
1629 | case AIC_OP_CALL: | |
1630 | case AIC_OP_JNE: | |
1631 | case AIC_OP_JNZ: | |
1632 | case AIC_OP_JE: | |
1633 | case AIC_OP_JZ: | |
1634 | { | |
1635 | struct sequencer_patch *cur_patch; | |
1636 | int address_offset; | |
1637 | unsigned int address; | |
1638 | int skip_addr; | |
1639 | int i; | |
1640 | ||
1641 | fmt3_ins = &instr.format3; | |
1642 | address_offset = 0; | |
1643 | address = fmt3_ins->address; | |
1644 | cur_patch = sequencer_patches; | |
1645 | skip_addr = 0; | |
1646 | ||
1647 | for (i = 0; i < address;) | |
1648 | { | |
1649 | aic7xxx_check_patch(p, &cur_patch, i, &skip_addr); | |
1650 | if (skip_addr > i) | |
1651 | { | |
1652 | int end_addr; | |
1653 | ||
1654 | end_addr = min_t(int, address, skip_addr); | |
1655 | address_offset += end_addr - i; | |
1656 | i = skip_addr; | |
1657 | } | |
1658 | else | |
1659 | { | |
1660 | i++; | |
1661 | } | |
1662 | } | |
1663 | address -= address_offset; | |
1664 | fmt3_ins->address = address; | |
1665 | /* Fall Through to the next code section */ | |
1666 | } | |
1667 | case AIC_OP_OR: | |
1668 | case AIC_OP_AND: | |
1669 | case AIC_OP_XOR: | |
1670 | case AIC_OP_ADD: | |
1671 | case AIC_OP_ADC: | |
1672 | case AIC_OP_BMOV: | |
1673 | if (fmt1_ins->parity != 0) | |
1674 | { | |
1675 | fmt1_ins->immediate = dconsts[fmt1_ins->immediate]; | |
1676 | } | |
1677 | fmt1_ins->parity = 0; | |
1678 | /* Fall Through to the next code section */ | |
1679 | case AIC_OP_ROL: | |
1680 | if ((p->features & AHC_ULTRA2) != 0) | |
1681 | { | |
1682 | int i, count; | |
1683 | ||
1684 | /* Calculate odd parity for the instruction */ | |
1685 | for ( i=0, count=0; i < 31; i++) | |
1686 | { | |
1687 | unsigned int mask; | |
1688 | ||
1689 | mask = 0x01 << i; | |
1690 | if ((instr.integer & mask) != 0) | |
1691 | count++; | |
1692 | } | |
1693 | if (!(count & 0x01)) | |
1694 | instr.format1.parity = 1; | |
1695 | } | |
1696 | else | |
1697 | { | |
1698 | if (fmt3_ins != NULL) | |
1699 | { | |
1700 | instr.integer = fmt3_ins->immediate | | |
1701 | (fmt3_ins->source << 8) | | |
1702 | (fmt3_ins->address << 16) | | |
1703 | (fmt3_ins->opcode << 25); | |
1704 | } | |
1705 | else | |
1706 | { | |
1707 | instr.integer = fmt1_ins->immediate | | |
1708 | (fmt1_ins->source << 8) | | |
1709 | (fmt1_ins->destination << 16) | | |
1710 | (fmt1_ins->ret << 24) | | |
1711 | (fmt1_ins->opcode << 25); | |
1712 | } | |
1713 | } | |
1714 | aic_outb(p, (instr.integer & 0xff), SEQRAM); | |
1715 | aic_outb(p, ((instr.integer >> 8) & 0xff), SEQRAM); | |
1716 | aic_outb(p, ((instr.integer >> 16) & 0xff), SEQRAM); | |
1717 | aic_outb(p, ((instr.integer >> 24) & 0xff), SEQRAM); | |
1718 | udelay(10); | |
1719 | break; | |
1720 | ||
1721 | default: | |
1722 | panic("aic7xxx: Unknown opcode encountered in sequencer program."); | |
1723 | break; | |
1724 | } | |
1725 | } | |
1726 | ||
1727 | ||
1728 | /*+F************************************************************************* | |
1729 | * Function: | |
1730 | * aic7xxx_loadseq | |
1731 | * | |
1732 | * Description: | |
1733 | * Load the sequencer code into the controller memory. | |
1734 | *-F*************************************************************************/ | |
1735 | static void | |
1736 | aic7xxx_loadseq(struct aic7xxx_host *p) | |
1737 | { | |
1738 | struct sequencer_patch *cur_patch; | |
1739 | int i; | |
1740 | int downloaded; | |
1741 | int skip_addr; | |
1742 | unsigned char download_consts[4] = {0, 0, 0, 0}; | |
1743 | ||
1744 | if (aic7xxx_verbose & VERBOSE_PROBE) | |
1745 | { | |
1746 | printk(KERN_INFO "(scsi%d) Downloading sequencer code...", p->host_no); | |
1747 | } | |
1748 | #if 0 | |
1749 | download_consts[TMODE_NUMCMDS] = p->num_targetcmds; | |
1750 | #endif | |
1751 | download_consts[TMODE_NUMCMDS] = 0; | |
1752 | cur_patch = &sequencer_patches[0]; | |
1753 | downloaded = 0; | |
1754 | skip_addr = 0; | |
1755 | ||
1756 | aic_outb(p, PERRORDIS|LOADRAM|FAILDIS|FASTMODE, SEQCTL); | |
1757 | aic_outb(p, 0, SEQADDR0); | |
1758 | aic_outb(p, 0, SEQADDR1); | |
1759 | ||
1760 | for (i = 0; i < sizeof(seqprog) / 4; i++) | |
1761 | { | |
1762 | if (aic7xxx_check_patch(p, &cur_patch, i, &skip_addr) == 0) | |
1763 | { | |
1764 | /* Skip this instruction for this configuration. */ | |
1765 | continue; | |
1766 | } | |
1767 | aic7xxx_download_instr(p, i, &download_consts[0]); | |
1768 | downloaded++; | |
1769 | } | |
1770 | ||
1771 | aic_outb(p, 0, SEQADDR0); | |
1772 | aic_outb(p, 0, SEQADDR1); | |
1773 | aic_outb(p, FASTMODE | FAILDIS, SEQCTL); | |
1774 | unpause_sequencer(p, TRUE); | |
1775 | mdelay(1); | |
1776 | pause_sequencer(p); | |
1777 | aic_outb(p, FASTMODE, SEQCTL); | |
1778 | if (aic7xxx_verbose & VERBOSE_PROBE) | |
1779 | { | |
1780 | printk(" %d instructions downloaded\n", downloaded); | |
1781 | } | |
1782 | if (aic7xxx_dump_sequencer) | |
1783 | aic7xxx_print_sequencer(p, downloaded); | |
1784 | } | |
1785 | ||
1786 | /*+F************************************************************************* | |
1787 | * Function: | |
1788 | * aic7xxx_print_sequencer | |
1789 | * | |
1790 | * Description: | |
1791 | * Print the contents of the sequencer memory to the screen. | |
1792 | *-F*************************************************************************/ | |
1793 | static void | |
1794 | aic7xxx_print_sequencer(struct aic7xxx_host *p, int downloaded) | |
1795 | { | |
1796 | int i, k, temp; | |
1797 | ||
1798 | aic_outb(p, PERRORDIS|LOADRAM|FAILDIS|FASTMODE, SEQCTL); | |
1799 | aic_outb(p, 0, SEQADDR0); | |
1800 | aic_outb(p, 0, SEQADDR1); | |
1801 | ||
1802 | k = 0; | |
1803 | for (i=0; i < downloaded; i++) | |
1804 | { | |
1805 | if ( k == 0 ) | |
1806 | printk("%03x: ", i); | |
1807 | temp = aic_inb(p, SEQRAM); | |
1808 | temp |= (aic_inb(p, SEQRAM) << 8); | |
1809 | temp |= (aic_inb(p, SEQRAM) << 16); | |
1810 | temp |= (aic_inb(p, SEQRAM) << 24); | |
1811 | printk("%08x", temp); | |
1812 | if ( ++k == 8 ) | |
1813 | { | |
1814 | printk("\n"); | |
1815 | k = 0; | |
1816 | } | |
1817 | else | |
1818 | printk(" "); | |
1819 | } | |
1820 | aic_outb(p, 0, SEQADDR0); | |
1821 | aic_outb(p, 0, SEQADDR1); | |
1822 | aic_outb(p, FASTMODE | FAILDIS, SEQCTL); | |
1823 | unpause_sequencer(p, TRUE); | |
1824 | mdelay(1); | |
1825 | pause_sequencer(p); | |
1826 | aic_outb(p, FASTMODE, SEQCTL); | |
1827 | printk("\n"); | |
1828 | } | |
1829 | ||
1830 | /*+F************************************************************************* | |
1831 | * Function: | |
1832 | * aic7xxx_info | |
1833 | * | |
1834 | * Description: | |
1835 | * Return a string describing the driver. | |
1836 | *-F*************************************************************************/ | |
1837 | static const char * | |
1838 | aic7xxx_info(struct Scsi_Host *dooh) | |
1839 | { | |
1840 | static char buffer[256]; | |
1841 | char *bp; | |
1842 | struct aic7xxx_host *p; | |
1843 | ||
1844 | bp = &buffer[0]; | |
1845 | p = (struct aic7xxx_host *)dooh->hostdata; | |
1846 | memset(bp, 0, sizeof(buffer)); | |
1847 | strcpy(bp, "Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) "); | |
1848 | strcat(bp, AIC7XXX_C_VERSION); | |
1849 | strcat(bp, "/"); | |
1850 | strcat(bp, AIC7XXX_H_VERSION); | |
1851 | strcat(bp, "\n"); | |
1852 | strcat(bp, " <"); | |
1853 | strcat(bp, board_names[p->board_name_index]); | |
1854 | strcat(bp, ">"); | |
1855 | ||
1856 | return(bp); | |
1857 | } | |
1858 | ||
1859 | /*+F************************************************************************* | |
1860 | * Function: | |
1861 | * aic7xxx_find_syncrate | |
1862 | * | |
1863 | * Description: | |
1864 | * Look up the valid period to SCSIRATE conversion in our table | |
1865 | *-F*************************************************************************/ | |
1866 | static struct aic7xxx_syncrate * | |
1867 | aic7xxx_find_syncrate(struct aic7xxx_host *p, unsigned int *period, | |
1868 | unsigned int maxsync, unsigned char *options) | |
1869 | { | |
1870 | struct aic7xxx_syncrate *syncrate; | |
1871 | int done = FALSE; | |
1872 | ||
1873 | switch(*options) | |
1874 | { | |
1875 | case MSG_EXT_PPR_OPTION_DT_CRC: | |
1876 | case MSG_EXT_PPR_OPTION_DT_UNITS: | |
1877 | if(!(p->features & AHC_ULTRA3)) | |
1878 | { | |
1879 | *options = 0; | |
1880 | maxsync = max_t(unsigned int, maxsync, AHC_SYNCRATE_ULTRA2); | |
1881 | } | |
1882 | break; | |
1883 | case MSG_EXT_PPR_OPTION_DT_CRC_QUICK: | |
1884 | case MSG_EXT_PPR_OPTION_DT_UNITS_QUICK: | |
1885 | if(!(p->features & AHC_ULTRA3)) | |
1886 | { | |
1887 | *options = 0; | |
1888 | maxsync = max_t(unsigned int, maxsync, AHC_SYNCRATE_ULTRA2); | |
1889 | } | |
1890 | else | |
1891 | { | |
1892 | /* | |
1893 | * we don't support the Quick Arbitration variants of dual edge | |
1894 | * clocking. As it turns out, we want to send back the | |
1895 | * same basic option, but without the QA attribute. | |
1896 | * We know that we are responding because we would never set | |
1897 | * these options ourself, we would only respond to them. | |
1898 | */ | |
1899 | switch(*options) | |
1900 | { | |
1901 | case MSG_EXT_PPR_OPTION_DT_CRC_QUICK: | |
1902 | *options = MSG_EXT_PPR_OPTION_DT_CRC; | |
1903 | break; | |
1904 | case MSG_EXT_PPR_OPTION_DT_UNITS_QUICK: | |
1905 | *options = MSG_EXT_PPR_OPTION_DT_UNITS; | |
1906 | break; | |
1907 | } | |
1908 | } | |
1909 | break; | |
1910 | default: | |
1911 | *options = 0; | |
1912 | maxsync = max_t(unsigned int, maxsync, AHC_SYNCRATE_ULTRA2); | |
1913 | break; | |
1914 | } | |
1915 | syncrate = &aic7xxx_syncrates[maxsync]; | |
1916 | while ( (syncrate->rate[0] != NULL) && | |
1917 | (!(p->features & AHC_ULTRA2) || syncrate->sxfr_ultra2) ) | |
1918 | { | |
1919 | if (*period <= syncrate->period) | |
1920 | { | |
1921 | switch(*options) | |
1922 | { | |
1923 | case MSG_EXT_PPR_OPTION_DT_CRC: | |
1924 | case MSG_EXT_PPR_OPTION_DT_UNITS: | |
1925 | if(!(syncrate->sxfr_ultra2 & AHC_SYNCRATE_CRC)) | |
1926 | { | |
1927 | done = TRUE; | |
1928 | /* | |
1929 | * oops, we went too low for the CRC/DualEdge signalling, so | |
1930 | * clear the options byte | |
1931 | */ | |
1932 | *options = 0; | |
1933 | /* | |
1934 | * We'll be sending a reply to this packet to set the options | |
1935 | * properly, so unilaterally set the period as well. | |
1936 | */ | |
1937 | *period = syncrate->period; | |
1938 | } | |
1939 | else | |
1940 | { | |
1941 | done = TRUE; | |
1942 | if(syncrate == &aic7xxx_syncrates[maxsync]) | |
1943 | { | |
1944 | *period = syncrate->period; | |
1945 | } | |
1946 | } | |
1947 | break; | |
1948 | default: | |
1949 | if(!(syncrate->sxfr_ultra2 & AHC_SYNCRATE_CRC)) | |
1950 | { | |
1951 | done = TRUE; | |
1952 | if(syncrate == &aic7xxx_syncrates[maxsync]) | |
1953 | { | |
1954 | *period = syncrate->period; | |
1955 | } | |
1956 | } | |
1957 | break; | |
1958 | } | |
1959 | if(done) | |
1960 | { | |
1961 | break; | |
1962 | } | |
1963 | } | |
1964 | syncrate++; | |
1965 | } | |
1966 | if ( (*period == 0) || (syncrate->rate[0] == NULL) || | |
1967 | ((p->features & AHC_ULTRA2) && (syncrate->sxfr_ultra2 == 0)) ) | |
1968 | { | |
1969 | /* | |
1970 | * Use async transfers for this target | |
1971 | */ | |
1972 | *options = 0; | |
1973 | *period = 255; | |
1974 | syncrate = NULL; | |
1975 | } | |
1976 | return (syncrate); | |
1977 | } | |
1978 | ||
1979 | ||
1980 | /*+F************************************************************************* | |
1981 | * Function: | |
1982 | * aic7xxx_find_period | |
1983 | * | |
1984 | * Description: | |
1985 | * Look up the valid SCSIRATE to period conversion in our table | |
1986 | *-F*************************************************************************/ | |
1987 | static unsigned int | |
1988 | aic7xxx_find_period(struct aic7xxx_host *p, unsigned int scsirate, | |
1989 | unsigned int maxsync) | |
1990 | { | |
1991 | struct aic7xxx_syncrate *syncrate; | |
1992 | ||
1993 | if (p->features & AHC_ULTRA2) | |
1994 | { | |
1995 | scsirate &= SXFR_ULTRA2; | |
1996 | } | |
1997 | else | |
1998 | { | |
1999 | scsirate &= SXFR; | |
2000 | } | |
2001 | ||
2002 | syncrate = &aic7xxx_syncrates[maxsync]; | |
2003 | while (syncrate->rate[0] != NULL) | |
2004 | { | |
2005 | if (p->features & AHC_ULTRA2) | |
2006 | { | |
2007 | if (syncrate->sxfr_ultra2 == 0) | |
2008 | break; | |
2009 | else if (scsirate == syncrate->sxfr_ultra2) | |
2010 | return (syncrate->period); | |
2011 | else if (scsirate == (syncrate->sxfr_ultra2 & ~AHC_SYNCRATE_CRC)) | |
2012 | return (syncrate->period); | |
2013 | } | |
2014 | else if (scsirate == (syncrate->sxfr & ~ULTRA_SXFR)) | |
2015 | { | |
2016 | return (syncrate->period); | |
2017 | } | |
2018 | syncrate++; | |
2019 | } | |
2020 | return (0); /* async */ | |
2021 | } | |
2022 | ||
2023 | /*+F************************************************************************* | |
2024 | * Function: | |
2025 | * aic7xxx_validate_offset | |
2026 | * | |
2027 | * Description: | |
2028 | * Set a valid offset value for a particular card in use and transfer | |
2029 | * settings in use. | |
2030 | *-F*************************************************************************/ | |
2031 | static void | |
2032 | aic7xxx_validate_offset(struct aic7xxx_host *p, | |
2033 | struct aic7xxx_syncrate *syncrate, unsigned int *offset, int wide) | |
2034 | { | |
2035 | unsigned int maxoffset; | |
2036 | ||
2037 | /* Limit offset to what the card (and device) can do */ | |
2038 | if (syncrate == NULL) | |
2039 | { | |
2040 | maxoffset = 0; | |
2041 | } | |
2042 | else if (p->features & AHC_ULTRA2) | |
2043 | { | |
2044 | maxoffset = MAX_OFFSET_ULTRA2; | |
2045 | } | |
2046 | else | |
2047 | { | |
2048 | if (wide) | |
2049 | maxoffset = MAX_OFFSET_16BIT; | |
2050 | else | |
2051 | maxoffset = MAX_OFFSET_8BIT; | |
2052 | } | |
2053 | *offset = min(*offset, maxoffset); | |
2054 | } | |
2055 | ||
2056 | /*+F************************************************************************* | |
2057 | * Function: | |
2058 | * aic7xxx_set_syncrate | |
2059 | * | |
2060 | * Description: | |
2061 | * Set the actual syncrate down in the card and in our host structs | |
2062 | *-F*************************************************************************/ | |
2063 | static void | |
2064 | aic7xxx_set_syncrate(struct aic7xxx_host *p, struct aic7xxx_syncrate *syncrate, | |
2065 | int target, int channel, unsigned int period, unsigned int offset, | |
2066 | unsigned char options, unsigned int type, struct aic_dev_data *aic_dev) | |
2067 | { | |
2068 | unsigned char tindex; | |
2069 | unsigned short target_mask; | |
2070 | unsigned char lun, old_options; | |
2071 | unsigned int old_period, old_offset; | |
2072 | ||
2073 | tindex = target | (channel << 3); | |
2074 | target_mask = 0x01 << tindex; | |
2075 | lun = aic_inb(p, SCB_TCL) & 0x07; | |
2076 | ||
2077 | if (syncrate == NULL) | |
2078 | { | |
2079 | period = 0; | |
2080 | offset = 0; | |
2081 | } | |
2082 | ||
2083 | old_period = aic_dev->cur.period; | |
2084 | old_offset = aic_dev->cur.offset; | |
2085 | old_options = aic_dev->cur.options; | |
2086 | ||
2087 | ||
2088 | if (type & AHC_TRANS_CUR) | |
2089 | { | |
2090 | unsigned int scsirate; | |
2091 | ||
2092 | scsirate = aic_inb(p, TARG_SCSIRATE + tindex); | |
2093 | if (p->features & AHC_ULTRA2) | |
2094 | { | |
2095 | scsirate &= ~SXFR_ULTRA2; | |
2096 | if (syncrate != NULL) | |
2097 | { | |
2098 | switch(options) | |
2099 | { | |
2100 | case MSG_EXT_PPR_OPTION_DT_UNITS: | |
2101 | /* | |
2102 | * mask off the CRC bit in the xfer settings | |
2103 | */ | |
2104 | scsirate |= (syncrate->sxfr_ultra2 & ~AHC_SYNCRATE_CRC); | |
2105 | break; | |
2106 | default: | |
2107 | scsirate |= syncrate->sxfr_ultra2; | |
2108 | break; | |
2109 | } | |
2110 | } | |
2111 | if (type & AHC_TRANS_ACTIVE) | |
2112 | { | |
2113 | aic_outb(p, offset, SCSIOFFSET); | |
2114 | } | |
2115 | aic_outb(p, offset, TARG_OFFSET + tindex); | |
2116 | } | |
2117 | else /* Not an Ultra2 controller */ | |
2118 | { | |
2119 | scsirate &= ~(SXFR|SOFS); | |
2120 | p->ultraenb &= ~target_mask; | |
2121 | if (syncrate != NULL) | |
2122 | { | |
2123 | if (syncrate->sxfr & ULTRA_SXFR) | |
2124 | { | |
2125 | p->ultraenb |= target_mask; | |
2126 | } | |
2127 | scsirate |= (syncrate->sxfr & SXFR); | |
2128 | scsirate |= (offset & SOFS); | |
2129 | } | |
2130 | if (type & AHC_TRANS_ACTIVE) | |
2131 | { | |
2132 | unsigned char sxfrctl0; | |
2133 | ||
2134 | sxfrctl0 = aic_inb(p, SXFRCTL0); | |
2135 | sxfrctl0 &= ~FAST20; | |
2136 | if (p->ultraenb & target_mask) | |
2137 | sxfrctl0 |= FAST20; | |
2138 | aic_outb(p, sxfrctl0, SXFRCTL0); | |
2139 | } | |
2140 | aic_outb(p, p->ultraenb & 0xff, ULTRA_ENB); | |
2141 | aic_outb(p, (p->ultraenb >> 8) & 0xff, ULTRA_ENB + 1 ); | |
2142 | } | |
2143 | if (type & AHC_TRANS_ACTIVE) | |
2144 | { | |
2145 | aic_outb(p, scsirate, SCSIRATE); | |
2146 | } | |
2147 | aic_outb(p, scsirate, TARG_SCSIRATE + tindex); | |
2148 | aic_dev->cur.period = period; | |
2149 | aic_dev->cur.offset = offset; | |
2150 | aic_dev->cur.options = options; | |
2151 | if ( !(type & AHC_TRANS_QUITE) && | |
2152 | (aic7xxx_verbose & VERBOSE_NEGOTIATION) && | |
2153 | (aic_dev->flags & DEVICE_PRINT_DTR) ) | |
2154 | { | |
2155 | if (offset) | |
2156 | { | |
2157 | int rate_mod = (scsirate & WIDEXFER) ? 1 : 0; | |
2158 | ||
2159 | printk(INFO_LEAD "Synchronous at %s Mbyte/sec, " | |
2160 | "offset %d.\n", p->host_no, channel, target, lun, | |
2161 | syncrate->rate[rate_mod], offset); | |
2162 | } | |
2163 | else | |
2164 | { | |
2165 | printk(INFO_LEAD "Using asynchronous transfers.\n", | |
2166 | p->host_no, channel, target, lun); | |
2167 | } | |
2168 | aic_dev->flags &= ~DEVICE_PRINT_DTR; | |
2169 | } | |
2170 | } | |
2171 | ||
2172 | if (type & AHC_TRANS_GOAL) | |
2173 | { | |
2174 | aic_dev->goal.period = period; | |
2175 | aic_dev->goal.offset = offset; | |
2176 | aic_dev->goal.options = options; | |
2177 | } | |
2178 | ||
2179 | if (type & AHC_TRANS_USER) | |
2180 | { | |
2181 | p->user[tindex].period = period; | |
2182 | p->user[tindex].offset = offset; | |
2183 | p->user[tindex].options = options; | |
2184 | } | |
2185 | } | |
2186 | ||
2187 | /*+F************************************************************************* | |
2188 | * Function: | |
2189 | * aic7xxx_set_width | |
2190 | * | |
2191 | * Description: | |
2192 | * Set the actual width down in the card and in our host structs | |
2193 | *-F*************************************************************************/ | |
2194 | static void | |
2195 | aic7xxx_set_width(struct aic7xxx_host *p, int target, int channel, int lun, | |
2196 | unsigned int width, unsigned int type, struct aic_dev_data *aic_dev) | |
2197 | { | |
2198 | unsigned char tindex; | |
2199 | unsigned short target_mask; | |
2200 | unsigned int old_width; | |
2201 | ||
2202 | tindex = target | (channel << 3); | |
2203 | target_mask = 1 << tindex; | |
2204 | ||
2205 | old_width = aic_dev->cur.width; | |
2206 | ||
2207 | if (type & AHC_TRANS_CUR) | |
2208 | { | |
2209 | unsigned char scsirate; | |
2210 | ||
2211 | scsirate = aic_inb(p, TARG_SCSIRATE + tindex); | |
2212 | ||
2213 | scsirate &= ~WIDEXFER; | |
2214 | if (width == MSG_EXT_WDTR_BUS_16_BIT) | |
2215 | scsirate |= WIDEXFER; | |
2216 | ||
2217 | aic_outb(p, scsirate, TARG_SCSIRATE + tindex); | |
2218 | ||
2219 | if (type & AHC_TRANS_ACTIVE) | |
2220 | aic_outb(p, scsirate, SCSIRATE); | |
2221 | ||
2222 | aic_dev->cur.width = width; | |
2223 | ||
2224 | if ( !(type & AHC_TRANS_QUITE) && | |
2225 | (aic7xxx_verbose & VERBOSE_NEGOTIATION2) && | |
2226 | (aic_dev->flags & DEVICE_PRINT_DTR) ) | |
2227 | { | |
2228 | printk(INFO_LEAD "Using %s transfers\n", p->host_no, channel, target, | |
2229 | lun, (scsirate & WIDEXFER) ? "Wide(16bit)" : "Narrow(8bit)" ); | |
2230 | } | |
2231 | } | |
2232 | ||
2233 | if (type & AHC_TRANS_GOAL) | |
2234 | aic_dev->goal.width = width; | |
2235 | if (type & AHC_TRANS_USER) | |
2236 | p->user[tindex].width = width; | |
2237 | ||
2238 | if (aic_dev->goal.offset) | |
2239 | { | |
2240 | if (p->features & AHC_ULTRA2) | |
2241 | { | |
2242 | aic_dev->goal.offset = MAX_OFFSET_ULTRA2; | |
2243 | } | |
2244 | else if (width == MSG_EXT_WDTR_BUS_16_BIT) | |
2245 | { | |
2246 | aic_dev->goal.offset = MAX_OFFSET_16BIT; | |
2247 | } | |
2248 | else | |
2249 | { | |
2250 | aic_dev->goal.offset = MAX_OFFSET_8BIT; | |
2251 | } | |
2252 | } | |
2253 | } | |
2254 | ||
2255 | /*+F************************************************************************* | |
2256 | * Function: | |
2257 | * scbq_init | |
2258 | * | |
2259 | * Description: | |
2260 | * SCB queue initialization. | |
2261 | * | |
2262 | *-F*************************************************************************/ | |
2263 | static void | |
2264 | scbq_init(volatile scb_queue_type *queue) | |
2265 | { | |
2266 | queue->head = NULL; | |
2267 | queue->tail = NULL; | |
2268 | } | |
2269 | ||
2270 | /*+F************************************************************************* | |
2271 | * Function: | |
2272 | * scbq_insert_head | |
2273 | * | |
2274 | * Description: | |
2275 | * Add an SCB to the head of the list. | |
2276 | * | |
2277 | *-F*************************************************************************/ | |
2278 | static inline void | |
2279 | scbq_insert_head(volatile scb_queue_type *queue, struct aic7xxx_scb *scb) | |
2280 | { | |
2281 | scb->q_next = queue->head; | |
2282 | queue->head = scb; | |
2283 | if (queue->tail == NULL) /* If list was empty, update tail. */ | |
2284 | queue->tail = queue->head; | |
2285 | } | |
2286 | ||
2287 | /*+F************************************************************************* | |
2288 | * Function: | |
2289 | * scbq_remove_head | |
2290 | * | |
2291 | * Description: | |
2292 | * Remove an SCB from the head of the list. | |
2293 | * | |
2294 | *-F*************************************************************************/ | |
2295 | static inline struct aic7xxx_scb * | |
2296 | scbq_remove_head(volatile scb_queue_type *queue) | |
2297 | { | |
2298 | struct aic7xxx_scb * scbp; | |
2299 | ||
2300 | scbp = queue->head; | |
2301 | if (queue->head != NULL) | |
2302 | queue->head = queue->head->q_next; | |
2303 | if (queue->head == NULL) /* If list is now empty, update tail. */ | |
2304 | queue->tail = NULL; | |
2305 | return(scbp); | |
2306 | } | |
2307 | ||
2308 | /*+F************************************************************************* | |
2309 | * Function: | |
2310 | * scbq_remove | |
2311 | * | |
2312 | * Description: | |
2313 | * Removes an SCB from the list. | |
2314 | * | |
2315 | *-F*************************************************************************/ | |
2316 | static inline void | |
2317 | scbq_remove(volatile scb_queue_type *queue, struct aic7xxx_scb *scb) | |
2318 | { | |
2319 | if (queue->head == scb) | |
2320 | { | |
2321 | /* At beginning of queue, remove from head. */ | |
2322 | scbq_remove_head(queue); | |
2323 | } | |
2324 | else | |
2325 | { | |
2326 | struct aic7xxx_scb *curscb = queue->head; | |
2327 | ||
2328 | /* | |
2329 | * Search until the next scb is the one we're looking for, or | |
2330 | * we run out of queue. | |
2331 | */ | |
2332 | while ((curscb != NULL) && (curscb->q_next != scb)) | |
2333 | { | |
2334 | curscb = curscb->q_next; | |
2335 | } | |
2336 | if (curscb != NULL) | |
2337 | { | |
2338 | /* Found it. */ | |
2339 | curscb->q_next = scb->q_next; | |
2340 | if (scb->q_next == NULL) | |
2341 | { | |
2342 | /* Update the tail when removing the tail. */ | |
2343 | queue->tail = curscb; | |
2344 | } | |
2345 | } | |
2346 | } | |
2347 | } | |
2348 | ||
2349 | /*+F************************************************************************* | |
2350 | * Function: | |
2351 | * scbq_insert_tail | |
2352 | * | |
2353 | * Description: | |
2354 | * Add an SCB at the tail of the list. | |
2355 | * | |
2356 | *-F*************************************************************************/ | |
2357 | static inline void | |
2358 | scbq_insert_tail(volatile scb_queue_type *queue, struct aic7xxx_scb *scb) | |
2359 | { | |
2360 | scb->q_next = NULL; | |
2361 | if (queue->tail != NULL) /* Add the scb at the end of the list. */ | |
2362 | queue->tail->q_next = scb; | |
2363 | queue->tail = scb; /* Update the tail. */ | |
2364 | if (queue->head == NULL) /* If list was empty, update head. */ | |
2365 | queue->head = queue->tail; | |
2366 | } | |
2367 | ||
2368 | /*+F************************************************************************* | |
2369 | * Function: | |
2370 | * aic7xxx_match_scb | |
2371 | * | |
2372 | * Description: | |
2373 | * Checks to see if an scb matches the target/channel as specified. | |
2374 | * If target is ALL_TARGETS (-1), then we're looking for any device | |
2375 | * on the specified channel; this happens when a channel is going | |
2376 | * to be reset and all devices on that channel must be aborted. | |
2377 | *-F*************************************************************************/ | |
2378 | static int | |
2379 | aic7xxx_match_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb, | |
2380 | int target, int channel, int lun, unsigned char tag) | |
2381 | { | |
2382 | int targ = (scb->hscb->target_channel_lun >> 4) & 0x0F; | |
2383 | int chan = (scb->hscb->target_channel_lun >> 3) & 0x01; | |
2384 | int slun = scb->hscb->target_channel_lun & 0x07; | |
2385 | int match; | |
2386 | ||
2387 | match = ((chan == channel) || (channel == ALL_CHANNELS)); | |
2388 | if (match != 0) | |
2389 | match = ((targ == target) || (target == ALL_TARGETS)); | |
2390 | if (match != 0) | |
2391 | match = ((lun == slun) || (lun == ALL_LUNS)); | |
2392 | if (match != 0) | |
2393 | match = ((tag == scb->hscb->tag) || (tag == SCB_LIST_NULL)); | |
2394 | ||
2395 | return (match); | |
2396 | } | |
2397 | ||
2398 | /*+F************************************************************************* | |
2399 | * Function: | |
2400 | * aic7xxx_add_curscb_to_free_list | |
2401 | * | |
2402 | * Description: | |
2403 | * Adds the current scb (in SCBPTR) to the list of free SCBs. | |
2404 | *-F*************************************************************************/ | |
2405 | static void | |
2406 | aic7xxx_add_curscb_to_free_list(struct aic7xxx_host *p) | |
2407 | { | |
2408 | /* | |
2409 | * Invalidate the tag so that aic7xxx_find_scb doesn't think | |
2410 | * it's active | |
2411 | */ | |
2412 | aic_outb(p, SCB_LIST_NULL, SCB_TAG); | |
2413 | aic_outb(p, 0, SCB_CONTROL); | |
2414 | ||
2415 | aic_outb(p, aic_inb(p, FREE_SCBH), SCB_NEXT); | |
2416 | aic_outb(p, aic_inb(p, SCBPTR), FREE_SCBH); | |
2417 | } | |
2418 | ||
2419 | /*+F************************************************************************* | |
2420 | * Function: | |
2421 | * aic7xxx_rem_scb_from_disc_list | |
2422 | * | |
2423 | * Description: | |
2424 | * Removes the current SCB from the disconnected list and adds it | |
2425 | * to the free list. | |
2426 | *-F*************************************************************************/ | |
2427 | static unsigned char | |
2428 | aic7xxx_rem_scb_from_disc_list(struct aic7xxx_host *p, unsigned char scbptr, | |
2429 | unsigned char prev) | |
2430 | { | |
2431 | unsigned char next; | |
2432 | ||
2433 | aic_outb(p, scbptr, SCBPTR); | |
2434 | next = aic_inb(p, SCB_NEXT); | |
2435 | aic7xxx_add_curscb_to_free_list(p); | |
2436 | ||
2437 | if (prev != SCB_LIST_NULL) | |
2438 | { | |
2439 | aic_outb(p, prev, SCBPTR); | |
2440 | aic_outb(p, next, SCB_NEXT); | |
2441 | } | |
2442 | else | |
2443 | { | |
2444 | aic_outb(p, next, DISCONNECTED_SCBH); | |
2445 | } | |
2446 | ||
2447 | return next; | |
2448 | } | |
2449 | ||
2450 | /*+F************************************************************************* | |
2451 | * Function: | |
2452 | * aic7xxx_busy_target | |
2453 | * | |
2454 | * Description: | |
2455 | * Set the specified target busy. | |
2456 | *-F*************************************************************************/ | |
2457 | static inline void | |
2458 | aic7xxx_busy_target(struct aic7xxx_host *p, struct aic7xxx_scb *scb) | |
2459 | { | |
2460 | p->untagged_scbs[scb->hscb->target_channel_lun] = scb->hscb->tag; | |
2461 | } | |
2462 | ||
2463 | /*+F************************************************************************* | |
2464 | * Function: | |
2465 | * aic7xxx_index_busy_target | |
2466 | * | |
2467 | * Description: | |
2468 | * Returns the index of the busy target, and optionally sets the | |
2469 | * target inactive. | |
2470 | *-F*************************************************************************/ | |
2471 | static inline unsigned char | |
2472 | aic7xxx_index_busy_target(struct aic7xxx_host *p, unsigned char tcl, | |
2473 | int unbusy) | |
2474 | { | |
2475 | unsigned char busy_scbid; | |
2476 | ||
2477 | busy_scbid = p->untagged_scbs[tcl]; | |
2478 | if (unbusy) | |
2479 | { | |
2480 | p->untagged_scbs[tcl] = SCB_LIST_NULL; | |
2481 | } | |
2482 | return (busy_scbid); | |
2483 | } | |
2484 | ||
2485 | /*+F************************************************************************* | |
2486 | * Function: | |
2487 | * aic7xxx_find_scb | |
2488 | * | |
2489 | * Description: | |
2490 | * Look through the SCB array of the card and attempt to find the | |
2491 | * hardware SCB that corresponds to the passed in SCB. Return | |
2492 | * SCB_LIST_NULL if unsuccessful. This routine assumes that the | |
2493 | * card is already paused. | |
2494 | *-F*************************************************************************/ | |
2495 | static unsigned char | |
2496 | aic7xxx_find_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb) | |
2497 | { | |
2498 | unsigned char saved_scbptr; | |
2499 | unsigned char curindex; | |
2500 | ||
2501 | saved_scbptr = aic_inb(p, SCBPTR); | |
2502 | curindex = 0; | |
2503 | for (curindex = 0; curindex < p->scb_data->maxhscbs; curindex++) | |
2504 | { | |
2505 | aic_outb(p, curindex, SCBPTR); | |
2506 | if (aic_inb(p, SCB_TAG) == scb->hscb->tag) | |
2507 | { | |
2508 | break; | |
2509 | } | |
2510 | } | |
2511 | aic_outb(p, saved_scbptr, SCBPTR); | |
2512 | if (curindex >= p->scb_data->maxhscbs) | |
2513 | { | |
2514 | curindex = SCB_LIST_NULL; | |
2515 | } | |
2516 | ||
2517 | return (curindex); | |
2518 | } | |
2519 | ||
2520 | /*+F************************************************************************* | |
2521 | * Function: | |
2522 | * aic7xxx_allocate_scb | |
2523 | * | |
2524 | * Description: | |
2525 | * Get an SCB from the free list or by allocating a new one. | |
2526 | *-F*************************************************************************/ | |
2527 | static int | |
2528 | aic7xxx_allocate_scb(struct aic7xxx_host *p) | |
2529 | { | |
2530 | struct aic7xxx_scb *scbp = NULL; | |
2531 | int scb_size = (sizeof (struct hw_scatterlist) * AIC7XXX_MAX_SG) + 12 + 6; | |
2532 | int i; | |
2533 | int step = PAGE_SIZE / 1024; | |
2534 | unsigned long scb_count = 0; | |
2535 | struct hw_scatterlist *hsgp; | |
2536 | struct aic7xxx_scb *scb_ap; | |
2537 | struct aic7xxx_scb_dma *scb_dma; | |
2538 | unsigned char *bufs; | |
2539 | ||
2540 | if (p->scb_data->numscbs < p->scb_data->maxscbs) | |
2541 | { | |
2542 | /* | |
2543 | * Calculate the optimal number of SCBs to allocate. | |
2544 | * | |
2545 | * NOTE: This formula works because the sizeof(sg_array) is always | |
2546 | * 1024. Therefore, scb_size * i would always be > PAGE_SIZE * | |
2547 | * (i/step). The (i-1) allows the left hand side of the equation | |
2548 | * to grow into the right hand side to a point of near perfect | |
2549 | * efficiency since scb_size * (i -1) is growing slightly faster | |
2550 | * than the right hand side. If the number of SG array elements | |
2551 | * is changed, this function may not be near so efficient any more. | |
2552 | * | |
2553 | * Since the DMA'able buffers are now allocated in a separate | |
2554 | * chunk this algorithm has been modified to match. The '12' | |
2555 | * and '6' factors in scb_size are for the DMA'able command byte | |
2556 | * and sensebuffers respectively. -DaveM | |
2557 | */ | |
2558 | for ( i=step;; i *= 2 ) | |
2559 | { | |
2560 | if ( (scb_size * (i-1)) >= ( (PAGE_SIZE * (i/step)) - 64 ) ) | |
2561 | { | |
2562 | i /= 2; | |
2563 | break; | |
2564 | } | |
2565 | } | |
2566 | scb_count = min( (i-1), p->scb_data->maxscbs - p->scb_data->numscbs); | |
5cbded58 | 2567 | scb_ap = kmalloc(sizeof (struct aic7xxx_scb) * scb_count |
1da177e4 LT |
2568 | + sizeof(struct aic7xxx_scb_dma), GFP_ATOMIC); |
2569 | if (scb_ap == NULL) | |
2570 | return(0); | |
2571 | scb_dma = (struct aic7xxx_scb_dma *)&scb_ap[scb_count]; | |
2572 | hsgp = (struct hw_scatterlist *) | |
2573 | pci_alloc_consistent(p->pdev, scb_size * scb_count, | |
2574 | &scb_dma->dma_address); | |
2575 | if (hsgp == NULL) | |
2576 | { | |
2577 | kfree(scb_ap); | |
2578 | return(0); | |
2579 | } | |
2580 | bufs = (unsigned char *)&hsgp[scb_count * AIC7XXX_MAX_SG]; | |
2581 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
2582 | if (aic7xxx_verbose > 0xffff) | |
2583 | { | |
2584 | if (p->scb_data->numscbs == 0) | |
2585 | printk(INFO_LEAD "Allocating initial %ld SCB structures.\n", | |
2586 | p->host_no, -1, -1, -1, scb_count); | |
2587 | else | |
2588 | printk(INFO_LEAD "Allocating %ld additional SCB structures.\n", | |
2589 | p->host_no, -1, -1, -1, scb_count); | |
2590 | } | |
2591 | #endif | |
2592 | memset(scb_ap, 0, sizeof (struct aic7xxx_scb) * scb_count); | |
2593 | scb_dma->dma_offset = (unsigned long)scb_dma->dma_address | |
2594 | - (unsigned long)hsgp; | |
2595 | scb_dma->dma_len = scb_size * scb_count; | |
2596 | for (i=0; i < scb_count; i++) | |
2597 | { | |
2598 | scbp = &scb_ap[i]; | |
2599 | scbp->hscb = &p->scb_data->hscbs[p->scb_data->numscbs]; | |
2600 | scbp->sg_list = &hsgp[i * AIC7XXX_MAX_SG]; | |
2601 | scbp->sense_cmd = bufs; | |
2602 | scbp->cmnd = bufs + 6; | |
2603 | bufs += 12 + 6; | |
2604 | scbp->scb_dma = scb_dma; | |
2605 | memset(scbp->hscb, 0, sizeof(struct aic7xxx_hwscb)); | |
2606 | scbp->hscb->tag = p->scb_data->numscbs; | |
2607 | /* | |
2608 | * Place in the scb array; never is removed | |
2609 | */ | |
2610 | p->scb_data->scb_array[p->scb_data->numscbs++] = scbp; | |
2611 | scbq_insert_tail(&p->scb_data->free_scbs, scbp); | |
2612 | } | |
2613 | scbp->kmalloc_ptr = scb_ap; | |
2614 | } | |
2615 | return(scb_count); | |
2616 | } | |
2617 | ||
2618 | /*+F************************************************************************* | |
2619 | * Function: | |
2620 | * aic7xxx_queue_cmd_complete | |
2621 | * | |
2622 | * Description: | |
2623 | * Due to race conditions present in the SCSI subsystem, it is easier | |
2624 | * to queue completed commands, then call scsi_done() on them when | |
2625 | * we're finished. This function queues the completed commands. | |
2626 | *-F*************************************************************************/ | |
2627 | static void | |
c1278289 | 2628 | aic7xxx_queue_cmd_complete(struct aic7xxx_host *p, struct scsi_cmnd *cmd) |
1da177e4 LT |
2629 | { |
2630 | aic7xxx_position(cmd) = SCB_LIST_NULL; | |
2631 | cmd->host_scribble = (char *)p->completeq.head; | |
2632 | p->completeq.head = cmd; | |
2633 | } | |
2634 | ||
2635 | /*+F************************************************************************* | |
2636 | * Function: | |
2637 | * aic7xxx_done_cmds_complete | |
2638 | * | |
2639 | * Description: | |
2640 | * Process the completed command queue. | |
2641 | *-F*************************************************************************/ | |
c1278289 | 2642 | static void aic7xxx_done_cmds_complete(struct aic7xxx_host *p) |
1da177e4 | 2643 | { |
c1278289 H |
2644 | struct scsi_cmnd *cmd; |
2645 | ||
2646 | while (p->completeq.head != NULL) { | |
2647 | cmd = p->completeq.head; | |
8e394aec | 2648 | p->completeq.head = (struct scsi_cmnd *) cmd->host_scribble; |
c1278289 H |
2649 | cmd->host_scribble = NULL; |
2650 | cmd->scsi_done(cmd); | |
2651 | } | |
1da177e4 LT |
2652 | } |
2653 | ||
2654 | /*+F************************************************************************* | |
2655 | * Function: | |
2656 | * aic7xxx_free_scb | |
2657 | * | |
2658 | * Description: | |
2659 | * Free the scb and insert into the free scb list. | |
2660 | *-F*************************************************************************/ | |
2661 | static void | |
2662 | aic7xxx_free_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb) | |
2663 | { | |
2664 | ||
2665 | scb->flags = SCB_FREE; | |
2666 | scb->cmd = NULL; | |
2667 | scb->sg_count = 0; | |
2668 | scb->sg_length = 0; | |
2669 | scb->tag_action = 0; | |
2670 | scb->hscb->control = 0; | |
2671 | scb->hscb->target_status = 0; | |
2672 | scb->hscb->target_channel_lun = SCB_LIST_NULL; | |
2673 | ||
2674 | scbq_insert_head(&p->scb_data->free_scbs, scb); | |
2675 | } | |
2676 | ||
2677 | /*+F************************************************************************* | |
2678 | * Function: | |
2679 | * aic7xxx_done | |
2680 | * | |
2681 | * Description: | |
2682 | * Calls the higher level scsi done function and frees the scb. | |
2683 | *-F*************************************************************************/ | |
2684 | static void | |
2685 | aic7xxx_done(struct aic7xxx_host *p, struct aic7xxx_scb *scb) | |
2686 | { | |
c1278289 H |
2687 | struct scsi_cmnd *cmd = scb->cmd; |
2688 | struct aic_dev_data *aic_dev = cmd->device->hostdata; | |
2689 | int tindex = TARGET_INDEX(cmd); | |
2690 | struct aic7xxx_scb *scbp; | |
2691 | unsigned char queue_depth; | |
1da177e4 | 2692 | |
22c1a660 | 2693 | scsi_dma_unmap(cmd); |
1da177e4 | 2694 | |
1da177e4 LT |
2695 | if (scb->flags & SCB_SENSE) |
2696 | { | |
2697 | pci_unmap_single(p->pdev, | |
2698 | le32_to_cpu(scb->sg_list[0].address), | |
b80ca4f7 | 2699 | SCSI_SENSE_BUFFERSIZE, |
1da177e4 LT |
2700 | PCI_DMA_FROMDEVICE); |
2701 | } | |
2702 | if (scb->flags & SCB_RECOVERY_SCB) | |
2703 | { | |
2704 | p->flags &= ~AHC_ABORT_PENDING; | |
2705 | } | |
2706 | if (scb->flags & (SCB_RESET|SCB_ABORT)) | |
2707 | { | |
2708 | cmd->result |= (DID_RESET << 16); | |
2709 | } | |
2710 | ||
2711 | if ((scb->flags & SCB_MSGOUT_BITS) != 0) | |
2712 | { | |
2713 | unsigned short mask; | |
2714 | int message_error = FALSE; | |
2715 | ||
2716 | mask = 0x01 << tindex; | |
2717 | ||
2718 | /* | |
2719 | * Check to see if we get an invalid message or a message error | |
2720 | * after failing to negotiate a wide or sync transfer message. | |
2721 | */ | |
2722 | if ((scb->flags & SCB_SENSE) && | |
2723 | ((scb->cmd->sense_buffer[12] == 0x43) || /* INVALID_MESSAGE */ | |
2724 | (scb->cmd->sense_buffer[12] == 0x49))) /* MESSAGE_ERROR */ | |
2725 | { | |
2726 | message_error = TRUE; | |
2727 | } | |
2728 | ||
2729 | if (scb->flags & SCB_MSGOUT_WDTR) | |
2730 | { | |
2731 | if (message_error) | |
2732 | { | |
2733 | if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) && | |
2734 | (aic_dev->flags & DEVICE_PRINT_DTR) ) | |
2735 | { | |
2736 | printk(INFO_LEAD "Device failed to complete Wide Negotiation " | |
2737 | "processing and\n", p->host_no, CTL_OF_SCB(scb)); | |
2738 | printk(INFO_LEAD "returned a sense error code for invalid message, " | |
2739 | "disabling future\n", p->host_no, CTL_OF_SCB(scb)); | |
2740 | printk(INFO_LEAD "Wide negotiation to this device.\n", p->host_no, | |
2741 | CTL_OF_SCB(scb)); | |
2742 | } | |
2743 | aic_dev->needwdtr = aic_dev->needwdtr_copy = 0; | |
2744 | } | |
2745 | } | |
2746 | if (scb->flags & SCB_MSGOUT_SDTR) | |
2747 | { | |
2748 | if (message_error) | |
2749 | { | |
2750 | if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) && | |
2751 | (aic_dev->flags & DEVICE_PRINT_DTR) ) | |
2752 | { | |
2753 | printk(INFO_LEAD "Device failed to complete Sync Negotiation " | |
2754 | "processing and\n", p->host_no, CTL_OF_SCB(scb)); | |
2755 | printk(INFO_LEAD "returned a sense error code for invalid message, " | |
2756 | "disabling future\n", p->host_no, CTL_OF_SCB(scb)); | |
2757 | printk(INFO_LEAD "Sync negotiation to this device.\n", p->host_no, | |
2758 | CTL_OF_SCB(scb)); | |
2759 | aic_dev->flags &= ~DEVICE_PRINT_DTR; | |
2760 | } | |
2761 | aic_dev->needsdtr = aic_dev->needsdtr_copy = 0; | |
2762 | } | |
2763 | } | |
2764 | if (scb->flags & SCB_MSGOUT_PPR) | |
2765 | { | |
2766 | if(message_error) | |
2767 | { | |
2768 | if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) && | |
2769 | (aic_dev->flags & DEVICE_PRINT_DTR) ) | |
2770 | { | |
2771 | printk(INFO_LEAD "Device failed to complete Parallel Protocol " | |
2772 | "Request processing and\n", p->host_no, CTL_OF_SCB(scb)); | |
2773 | printk(INFO_LEAD "returned a sense error code for invalid message, " | |
2774 | "disabling future\n", p->host_no, CTL_OF_SCB(scb)); | |
2775 | printk(INFO_LEAD "Parallel Protocol Request negotiation to this " | |
2776 | "device.\n", p->host_no, CTL_OF_SCB(scb)); | |
2777 | } | |
2778 | /* | |
2779 | * Disable PPR negotiation and revert back to WDTR and SDTR setup | |
2780 | */ | |
2781 | aic_dev->needppr = aic_dev->needppr_copy = 0; | |
2782 | aic_dev->needsdtr = aic_dev->needsdtr_copy = 1; | |
2783 | aic_dev->needwdtr = aic_dev->needwdtr_copy = 1; | |
2784 | } | |
2785 | } | |
2786 | } | |
2787 | ||
2788 | queue_depth = aic_dev->temp_q_depth; | |
2789 | if (queue_depth >= aic_dev->active_cmds) | |
2790 | { | |
2791 | scbp = scbq_remove_head(&aic_dev->delayed_scbs); | |
2792 | if (scbp) | |
2793 | { | |
2794 | if (queue_depth == 1) | |
2795 | { | |
2796 | /* | |
2797 | * Give extra preference to untagged devices, such as CD-R devices | |
2798 | * This makes it more likely that a drive *won't* stuff up while | |
2799 | * waiting on data at a critical time, such as CD-R writing and | |
2800 | * audio CD ripping operations. Should also benefit tape drives. | |
2801 | */ | |
2802 | scbq_insert_head(&p->waiting_scbs, scbp); | |
2803 | } | |
2804 | else | |
2805 | { | |
2806 | scbq_insert_tail(&p->waiting_scbs, scbp); | |
2807 | } | |
2808 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
2809 | if (aic7xxx_verbose > 0xffff) | |
2810 | printk(INFO_LEAD "Moving SCB from delayed to waiting queue.\n", | |
2811 | p->host_no, CTL_OF_SCB(scbp)); | |
2812 | #endif | |
2813 | if (queue_depth > aic_dev->active_cmds) | |
2814 | { | |
2815 | scbp = scbq_remove_head(&aic_dev->delayed_scbs); | |
2816 | if (scbp) | |
2817 | scbq_insert_tail(&p->waiting_scbs, scbp); | |
2818 | } | |
2819 | } | |
2820 | } | |
2821 | if (!(scb->tag_action)) | |
2822 | { | |
2823 | aic7xxx_index_busy_target(p, scb->hscb->target_channel_lun, | |
2824 | /* unbusy */ TRUE); | |
2825 | if (cmd->device->simple_tags) | |
2826 | { | |
2827 | aic_dev->temp_q_depth = aic_dev->max_q_depth; | |
2828 | } | |
2829 | } | |
2830 | if(scb->flags & SCB_DTR_SCB) | |
2831 | { | |
2832 | aic_dev->dtr_pending = 0; | |
2833 | } | |
2834 | aic_dev->active_cmds--; | |
2835 | p->activescbs--; | |
2836 | ||
2837 | if ((scb->sg_length >= 512) && (((cmd->result >> 16) & 0xf) == DID_OK)) | |
2838 | { | |
2839 | long *ptr; | |
2840 | int x, i; | |
2841 | ||
2842 | ||
2843 | if (rq_data_dir(cmd->request) == WRITE) | |
2844 | { | |
2845 | aic_dev->w_total++; | |
2846 | ptr = aic_dev->w_bins; | |
2847 | } | |
2848 | else | |
2849 | { | |
2850 | aic_dev->r_total++; | |
2851 | ptr = aic_dev->r_bins; | |
2852 | } | |
4aff5e23 | 2853 | if(cmd->device->simple_tags && cmd->request->cmd_flags & REQ_HARDBARRIER) |
1da177e4 LT |
2854 | { |
2855 | aic_dev->barrier_total++; | |
2856 | if(scb->tag_action == MSG_ORDERED_Q_TAG) | |
2857 | aic_dev->ordered_total++; | |
2858 | } | |
2859 | x = scb->sg_length; | |
2860 | x >>= 10; | |
2861 | for(i=0; i<6; i++) | |
2862 | { | |
2863 | x >>= 2; | |
2864 | if(!x) { | |
2865 | ptr[i]++; | |
2866 | break; | |
2867 | } | |
2868 | } | |
2869 | if(i == 6 && x) | |
2870 | ptr[5]++; | |
2871 | } | |
2872 | aic7xxx_free_scb(p, scb); | |
2873 | aic7xxx_queue_cmd_complete(p, cmd); | |
2874 | ||
2875 | } | |
2876 | ||
2877 | /*+F************************************************************************* | |
2878 | * Function: | |
2879 | * aic7xxx_run_done_queue | |
2880 | * | |
2881 | * Description: | |
c1278289 | 2882 | * Calls the aic7xxx_done() for the scsi_cmnd of each scb in the |
1da177e4 LT |
2883 | * aborted list, and adds each scb to the free list. If complete |
2884 | * is TRUE, we also process the commands complete list. | |
2885 | *-F*************************************************************************/ | |
2886 | static void | |
2887 | aic7xxx_run_done_queue(struct aic7xxx_host *p, /*complete*/ int complete) | |
2888 | { | |
2889 | struct aic7xxx_scb *scb; | |
2890 | int i, found = 0; | |
2891 | ||
2892 | for (i = 0; i < p->scb_data->numscbs; i++) | |
2893 | { | |
2894 | scb = p->scb_data->scb_array[i]; | |
2895 | if (scb->flags & SCB_QUEUED_FOR_DONE) | |
2896 | { | |
2897 | if (scb->flags & SCB_QUEUE_FULL) | |
2898 | { | |
2899 | scb->cmd->result = QUEUE_FULL << 1; | |
2900 | } | |
2901 | else | |
2902 | { | |
2903 | if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS)) | |
2904 | printk(INFO_LEAD "Aborting scb %d\n", | |
2905 | p->host_no, CTL_OF_SCB(scb), scb->hscb->tag); | |
2906 | /* | |
2907 | * Clear any residual information since the normal aic7xxx_done() path | |
2908 | * doesn't touch the residuals. | |
2909 | */ | |
2910 | scb->hscb->residual_SG_segment_count = 0; | |
2911 | scb->hscb->residual_data_count[0] = 0; | |
2912 | scb->hscb->residual_data_count[1] = 0; | |
2913 | scb->hscb->residual_data_count[2] = 0; | |
2914 | } | |
2915 | found++; | |
2916 | aic7xxx_done(p, scb); | |
2917 | } | |
2918 | } | |
2919 | if (aic7xxx_verbose & (VERBOSE_ABORT_RETURN | VERBOSE_RESET_RETURN)) | |
2920 | { | |
2921 | printk(INFO_LEAD "%d commands found and queued for " | |
2922 | "completion.\n", p->host_no, -1, -1, -1, found); | |
2923 | } | |
2924 | if (complete) | |
2925 | { | |
2926 | aic7xxx_done_cmds_complete(p); | |
2927 | } | |
2928 | } | |
2929 | ||
2930 | /*+F************************************************************************* | |
2931 | * Function: | |
2932 | * aic7xxx_abort_waiting_scb | |
2933 | * | |
2934 | * Description: | |
2935 | * Manipulate the waiting for selection list and return the | |
2936 | * scb that follows the one that we remove. | |
2937 | *-F*************************************************************************/ | |
2938 | static unsigned char | |
2939 | aic7xxx_abort_waiting_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb, | |
2940 | unsigned char scbpos, unsigned char prev) | |
2941 | { | |
2942 | unsigned char curscb, next; | |
2943 | ||
2944 | /* | |
2945 | * Select the SCB we want to abort and pull the next pointer out of it. | |
2946 | */ | |
2947 | curscb = aic_inb(p, SCBPTR); | |
2948 | aic_outb(p, scbpos, SCBPTR); | |
2949 | next = aic_inb(p, SCB_NEXT); | |
2950 | ||
2951 | aic7xxx_add_curscb_to_free_list(p); | |
2952 | ||
2953 | /* | |
2954 | * Update the waiting list | |
2955 | */ | |
2956 | if (prev == SCB_LIST_NULL) | |
2957 | { | |
2958 | /* | |
2959 | * First in the list | |
2960 | */ | |
2961 | aic_outb(p, next, WAITING_SCBH); | |
2962 | } | |
2963 | else | |
2964 | { | |
2965 | /* | |
2966 | * Select the scb that pointed to us and update its next pointer. | |
2967 | */ | |
2968 | aic_outb(p, prev, SCBPTR); | |
2969 | aic_outb(p, next, SCB_NEXT); | |
2970 | } | |
2971 | /* | |
2972 | * Point us back at the original scb position and inform the SCSI | |
2973 | * system that the command has been aborted. | |
2974 | */ | |
2975 | aic_outb(p, curscb, SCBPTR); | |
2976 | return (next); | |
2977 | } | |
2978 | ||
2979 | /*+F************************************************************************* | |
2980 | * Function: | |
2981 | * aic7xxx_search_qinfifo | |
2982 | * | |
2983 | * Description: | |
2984 | * Search the queue-in FIFO for matching SCBs and conditionally | |
2985 | * requeue. Returns the number of matching SCBs. | |
2986 | *-F*************************************************************************/ | |
2987 | static int | |
2988 | aic7xxx_search_qinfifo(struct aic7xxx_host *p, int target, int channel, | |
2989 | int lun, unsigned char tag, int flags, int requeue, | |
2990 | volatile scb_queue_type *queue) | |
2991 | { | |
2992 | int found; | |
2993 | unsigned char qinpos, qintail; | |
2994 | struct aic7xxx_scb *scbp; | |
2995 | ||
2996 | found = 0; | |
2997 | qinpos = aic_inb(p, QINPOS); | |
2998 | qintail = p->qinfifonext; | |
2999 | ||
3000 | p->qinfifonext = qinpos; | |
3001 | ||
3002 | while (qinpos != qintail) | |
3003 | { | |
3004 | scbp = p->scb_data->scb_array[p->qinfifo[qinpos++]]; | |
3005 | if (aic7xxx_match_scb(p, scbp, target, channel, lun, tag)) | |
3006 | { | |
3007 | /* | |
3008 | * We found an scb that needs to be removed. | |
3009 | */ | |
3010 | if (requeue && (queue != NULL)) | |
3011 | { | |
3012 | if (scbp->flags & SCB_WAITINGQ) | |
3013 | { | |
3014 | scbq_remove(queue, scbp); | |
3015 | scbq_remove(&p->waiting_scbs, scbp); | |
3016 | scbq_remove(&AIC_DEV(scbp->cmd)->delayed_scbs, scbp); | |
3017 | AIC_DEV(scbp->cmd)->active_cmds++; | |
3018 | p->activescbs++; | |
3019 | } | |
3020 | scbq_insert_tail(queue, scbp); | |
3021 | AIC_DEV(scbp->cmd)->active_cmds--; | |
3022 | p->activescbs--; | |
3023 | scbp->flags |= SCB_WAITINGQ; | |
3024 | if ( !(scbp->tag_action & TAG_ENB) ) | |
3025 | { | |
3026 | aic7xxx_index_busy_target(p, scbp->hscb->target_channel_lun, | |
3027 | TRUE); | |
3028 | } | |
3029 | } | |
3030 | else if (requeue) | |
3031 | { | |
3032 | p->qinfifo[p->qinfifonext++] = scbp->hscb->tag; | |
3033 | } | |
3034 | else | |
3035 | { | |
3036 | /* | |
3037 | * Preserve any SCB_RECOVERY_SCB flags on this scb then set the | |
3038 | * flags we were called with, presumeably so aic7xxx_run_done_queue | |
3039 | * can find this scb | |
3040 | */ | |
3041 | scbp->flags = flags | (scbp->flags & SCB_RECOVERY_SCB); | |
3042 | if (aic7xxx_index_busy_target(p, scbp->hscb->target_channel_lun, | |
3043 | FALSE) == scbp->hscb->tag) | |
3044 | { | |
3045 | aic7xxx_index_busy_target(p, scbp->hscb->target_channel_lun, | |
3046 | TRUE); | |
3047 | } | |
3048 | } | |
3049 | found++; | |
3050 | } | |
3051 | else | |
3052 | { | |
3053 | p->qinfifo[p->qinfifonext++] = scbp->hscb->tag; | |
3054 | } | |
3055 | } | |
3056 | /* | |
3057 | * Now that we've done the work, clear out any left over commands in the | |
3058 | * qinfifo and update the KERNEL_QINPOS down on the card. | |
3059 | * | |
3060 | * NOTE: This routine expect the sequencer to already be paused when | |
3061 | * it is run....make sure it's that way! | |
3062 | */ | |
3063 | qinpos = p->qinfifonext; | |
3064 | while(qinpos != qintail) | |
3065 | { | |
3066 | p->qinfifo[qinpos++] = SCB_LIST_NULL; | |
3067 | } | |
3068 | if (p->features & AHC_QUEUE_REGS) | |
3069 | aic_outb(p, p->qinfifonext, HNSCB_QOFF); | |
3070 | else | |
3071 | aic_outb(p, p->qinfifonext, KERNEL_QINPOS); | |
3072 | ||
3073 | return (found); | |
3074 | } | |
3075 | ||
3076 | /*+F************************************************************************* | |
3077 | * Function: | |
3078 | * aic7xxx_scb_on_qoutfifo | |
3079 | * | |
3080 | * Description: | |
3081 | * Is the scb that was passed to us currently on the qoutfifo? | |
3082 | *-F*************************************************************************/ | |
3083 | static int | |
3084 | aic7xxx_scb_on_qoutfifo(struct aic7xxx_host *p, struct aic7xxx_scb *scb) | |
3085 | { | |
3086 | int i=0; | |
3087 | ||
3088 | while(p->qoutfifo[(p->qoutfifonext + i) & 0xff ] != SCB_LIST_NULL) | |
3089 | { | |
3090 | if(p->qoutfifo[(p->qoutfifonext + i) & 0xff ] == scb->hscb->tag) | |
3091 | return TRUE; | |
3092 | else | |
3093 | i++; | |
3094 | } | |
3095 | return FALSE; | |
3096 | } | |
3097 | ||
3098 | ||
3099 | /*+F************************************************************************* | |
3100 | * Function: | |
3101 | * aic7xxx_reset_device | |
3102 | * | |
3103 | * Description: | |
3104 | * The device at the given target/channel has been reset. Abort | |
3105 | * all active and queued scbs for that target/channel. This function | |
3106 | * need not worry about linked next pointers because if was a MSG_ABORT_TAG | |
3107 | * then we had a tagged command (no linked next), if it was MSG_ABORT or | |
3108 | * MSG_BUS_DEV_RESET then the device won't know about any commands any more | |
3109 | * and no busy commands will exist, and if it was a bus reset, then nothing | |
3110 | * knows about any linked next commands any more. In all cases, we don't | |
3111 | * need to worry about the linked next or busy scb, we just need to clear | |
3112 | * them. | |
3113 | *-F*************************************************************************/ | |
3114 | static void | |
3115 | aic7xxx_reset_device(struct aic7xxx_host *p, int target, int channel, | |
3116 | int lun, unsigned char tag) | |
3117 | { | |
3118 | struct aic7xxx_scb *scbp, *prev_scbp; | |
3119 | struct scsi_device *sd; | |
3120 | unsigned char active_scb, tcl, scb_tag; | |
3121 | int i = 0, init_lists = FALSE; | |
3122 | struct aic_dev_data *aic_dev; | |
3123 | ||
3124 | /* | |
3125 | * Restore this when we're done | |
3126 | */ | |
3127 | active_scb = aic_inb(p, SCBPTR); | |
3128 | scb_tag = aic_inb(p, SCB_TAG); | |
3129 | ||
3130 | if (aic7xxx_verbose & (VERBOSE_RESET_PROCESS | VERBOSE_ABORT_PROCESS)) | |
3131 | { | |
3132 | printk(INFO_LEAD "Reset device, hardware_scb %d,\n", | |
3133 | p->host_no, channel, target, lun, active_scb); | |
3134 | printk(INFO_LEAD "Current scb %d, SEQADDR 0x%x, LASTPHASE " | |
3135 | "0x%x\n", | |
3136 | p->host_no, channel, target, lun, scb_tag, | |
3137 | aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8), | |
3138 | aic_inb(p, LASTPHASE)); | |
3139 | printk(INFO_LEAD "SG_CACHEPTR 0x%x, SG_COUNT %d, SCSISIGI 0x%x\n", | |
3140 | p->host_no, channel, target, lun, | |
3141 | (p->features & AHC_ULTRA2) ? aic_inb(p, SG_CACHEPTR) : 0, | |
3142 | aic_inb(p, SG_COUNT), aic_inb(p, SCSISIGI)); | |
3143 | printk(INFO_LEAD "SSTAT0 0x%x, SSTAT1 0x%x, SSTAT2 0x%x\n", | |
3144 | p->host_no, channel, target, lun, aic_inb(p, SSTAT0), | |
3145 | aic_inb(p, SSTAT1), aic_inb(p, SSTAT2)); | |
3146 | } | |
3147 | ||
3148 | /* | |
3149 | * Deal with the busy target and linked next issues. | |
3150 | */ | |
3151 | list_for_each_entry(aic_dev, &p->aic_devs, list) | |
3152 | { | |
3153 | if (aic7xxx_verbose & (VERBOSE_RESET_PROCESS | VERBOSE_ABORT_PROCESS)) | |
3154 | printk(INFO_LEAD "processing aic_dev %p\n", p->host_no, channel, target, | |
3155 | lun, aic_dev); | |
3156 | sd = aic_dev->SDptr; | |
3157 | ||
3158 | if((target != ALL_TARGETS && target != sd->id) || | |
3159 | (channel != ALL_CHANNELS && channel != sd->channel)) | |
3160 | continue; | |
3161 | if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS)) | |
3162 | printk(INFO_LEAD "Cleaning up status information " | |
3163 | "and delayed_scbs.\n", p->host_no, sd->channel, sd->id, sd->lun); | |
3164 | aic_dev->flags &= ~BUS_DEVICE_RESET_PENDING; | |
3165 | if ( tag == SCB_LIST_NULL ) | |
3166 | { | |
3167 | aic_dev->dtr_pending = 0; | |
3168 | aic_dev->needppr = aic_dev->needppr_copy; | |
3169 | aic_dev->needsdtr = aic_dev->needsdtr_copy; | |
3170 | aic_dev->needwdtr = aic_dev->needwdtr_copy; | |
3171 | aic_dev->flags = DEVICE_PRINT_DTR; | |
3172 | aic_dev->temp_q_depth = aic_dev->max_q_depth; | |
3173 | } | |
3174 | tcl = (sd->id << 4) | (sd->channel << 3) | sd->lun; | |
3175 | if ( (aic7xxx_index_busy_target(p, tcl, FALSE) == tag) || | |
3176 | (tag == SCB_LIST_NULL) ) | |
3177 | aic7xxx_index_busy_target(p, tcl, /* unbusy */ TRUE); | |
3178 | prev_scbp = NULL; | |
3179 | scbp = aic_dev->delayed_scbs.head; | |
3180 | while (scbp != NULL) | |
3181 | { | |
3182 | prev_scbp = scbp; | |
3183 | scbp = scbp->q_next; | |
3184 | if (aic7xxx_match_scb(p, prev_scbp, target, channel, lun, tag)) | |
3185 | { | |
3186 | scbq_remove(&aic_dev->delayed_scbs, prev_scbp); | |
3187 | if (prev_scbp->flags & SCB_WAITINGQ) | |
3188 | { | |
3189 | aic_dev->active_cmds++; | |
3190 | p->activescbs++; | |
3191 | } | |
3192 | prev_scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ); | |
3193 | prev_scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE; | |
3194 | } | |
3195 | } | |
3196 | } | |
3197 | ||
3198 | if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS)) | |
3199 | printk(INFO_LEAD "Cleaning QINFIFO.\n", p->host_no, channel, target, lun ); | |
3200 | aic7xxx_search_qinfifo(p, target, channel, lun, tag, | |
3201 | SCB_RESET | SCB_QUEUED_FOR_DONE, /* requeue */ FALSE, NULL); | |
3202 | ||
3203 | /* | |
3204 | * Search the waiting_scbs queue for matches, this catches any SCB_QUEUED | |
3205 | * ABORT/RESET commands. | |
3206 | */ | |
3207 | if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS)) | |
3208 | printk(INFO_LEAD "Cleaning waiting_scbs.\n", p->host_no, channel, | |
3209 | target, lun ); | |
3210 | { | |
3211 | struct aic7xxx_scb *scbp, *prev_scbp; | |
3212 | ||
3213 | prev_scbp = NULL; | |
3214 | scbp = p->waiting_scbs.head; | |
3215 | while (scbp != NULL) | |
3216 | { | |
3217 | prev_scbp = scbp; | |
3218 | scbp = scbp->q_next; | |
3219 | if (aic7xxx_match_scb(p, prev_scbp, target, channel, lun, tag)) | |
3220 | { | |
3221 | scbq_remove(&p->waiting_scbs, prev_scbp); | |
3222 | if (prev_scbp->flags & SCB_WAITINGQ) | |
3223 | { | |
3224 | AIC_DEV(prev_scbp->cmd)->active_cmds++; | |
3225 | p->activescbs++; | |
3226 | } | |
3227 | prev_scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ); | |
3228 | prev_scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE; | |
3229 | } | |
3230 | } | |
3231 | } | |
3232 | ||
3233 | ||
3234 | /* | |
3235 | * Search waiting for selection list. | |
3236 | */ | |
3237 | if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS)) | |
3238 | printk(INFO_LEAD "Cleaning waiting for selection " | |
3239 | "list.\n", p->host_no, channel, target, lun); | |
3240 | { | |
3241 | unsigned char next, prev, scb_index; | |
3242 | ||
3243 | next = aic_inb(p, WAITING_SCBH); /* Start at head of list. */ | |
3244 | prev = SCB_LIST_NULL; | |
3245 | while (next != SCB_LIST_NULL) | |
3246 | { | |
3247 | aic_outb(p, next, SCBPTR); | |
3248 | scb_index = aic_inb(p, SCB_TAG); | |
3249 | if (scb_index >= p->scb_data->numscbs) | |
3250 | { | |
3251 | /* | |
3252 | * No aic7xxx_verbose check here.....we want to see this since it | |
3253 | * means either the kernel driver or the sequencer screwed things up | |
3254 | */ | |
3255 | printk(WARN_LEAD "Waiting List inconsistency; SCB index=%d, " | |
3256 | "numscbs=%d\n", p->host_no, channel, target, lun, scb_index, | |
3257 | p->scb_data->numscbs); | |
3258 | next = aic_inb(p, SCB_NEXT); | |
3259 | aic7xxx_add_curscb_to_free_list(p); | |
3260 | } | |
3261 | else | |
3262 | { | |
3263 | scbp = p->scb_data->scb_array[scb_index]; | |
3264 | if (aic7xxx_match_scb(p, scbp, target, channel, lun, tag)) | |
3265 | { | |
3266 | next = aic7xxx_abort_waiting_scb(p, scbp, next, prev); | |
3267 | if (scbp->flags & SCB_WAITINGQ) | |
3268 | { | |
3269 | AIC_DEV(scbp->cmd)->active_cmds++; | |
3270 | p->activescbs++; | |
3271 | } | |
3272 | scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ); | |
3273 | scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE; | |
3274 | if (prev == SCB_LIST_NULL) | |
3275 | { | |
3276 | /* | |
3277 | * This is either the first scb on the waiting list, or we | |
3278 | * have already yanked the first and haven't left any behind. | |
3279 | * Either way, we need to turn off the selection hardware if | |
3280 | * it isn't already off. | |
3281 | */ | |
3282 | aic_outb(p, aic_inb(p, SCSISEQ) & ~ENSELO, SCSISEQ); | |
3283 | aic_outb(p, CLRSELTIMEO, CLRSINT1); | |
3284 | } | |
3285 | } | |
3286 | else | |
3287 | { | |
3288 | prev = next; | |
3289 | next = aic_inb(p, SCB_NEXT); | |
3290 | } | |
3291 | } | |
3292 | } | |
3293 | } | |
3294 | ||
3295 | /* | |
3296 | * Go through disconnected list and remove any entries we have queued | |
3297 | * for completion, zeroing their control byte too. | |
3298 | */ | |
3299 | if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS)) | |
3300 | printk(INFO_LEAD "Cleaning disconnected scbs " | |
3301 | "list.\n", p->host_no, channel, target, lun); | |
3302 | if (p->flags & AHC_PAGESCBS) | |
3303 | { | |
3304 | unsigned char next, prev, scb_index; | |
3305 | ||
3306 | next = aic_inb(p, DISCONNECTED_SCBH); | |
3307 | prev = SCB_LIST_NULL; | |
3308 | while (next != SCB_LIST_NULL) | |
3309 | { | |
3310 | aic_outb(p, next, SCBPTR); | |
3311 | scb_index = aic_inb(p, SCB_TAG); | |
3312 | if (scb_index > p->scb_data->numscbs) | |
3313 | { | |
3314 | printk(WARN_LEAD "Disconnected List inconsistency; SCB index=%d, " | |
3315 | "numscbs=%d\n", p->host_no, channel, target, lun, scb_index, | |
3316 | p->scb_data->numscbs); | |
3317 | next = aic7xxx_rem_scb_from_disc_list(p, next, prev); | |
3318 | } | |
3319 | else | |
3320 | { | |
3321 | scbp = p->scb_data->scb_array[scb_index]; | |
3322 | if (aic7xxx_match_scb(p, scbp, target, channel, lun, tag)) | |
3323 | { | |
3324 | next = aic7xxx_rem_scb_from_disc_list(p, next, prev); | |
3325 | if (scbp->flags & SCB_WAITINGQ) | |
3326 | { | |
3327 | AIC_DEV(scbp->cmd)->active_cmds++; | |
3328 | p->activescbs++; | |
3329 | } | |
3330 | scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ); | |
3331 | scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE; | |
3332 | scbp->hscb->control = 0; | |
3333 | } | |
3334 | else | |
3335 | { | |
3336 | prev = next; | |
3337 | next = aic_inb(p, SCB_NEXT); | |
3338 | } | |
3339 | } | |
3340 | } | |
3341 | } | |
3342 | ||
3343 | /* | |
3344 | * Walk the free list making sure no entries on the free list have | |
3345 | * a valid SCB_TAG value or SCB_CONTROL byte. | |
3346 | */ | |
3347 | if (p->flags & AHC_PAGESCBS) | |
3348 | { | |
3349 | unsigned char next; | |
3350 | ||
3351 | next = aic_inb(p, FREE_SCBH); | |
3352 | while (next != SCB_LIST_NULL) | |
3353 | { | |
3354 | aic_outb(p, next, SCBPTR); | |
3355 | if (aic_inb(p, SCB_TAG) < p->scb_data->numscbs) | |
3356 | { | |
3357 | printk(WARN_LEAD "Free list inconsistency!.\n", p->host_no, channel, | |
3358 | target, lun); | |
3359 | init_lists = TRUE; | |
3360 | next = SCB_LIST_NULL; | |
3361 | } | |
3362 | else | |
3363 | { | |
3364 | aic_outb(p, SCB_LIST_NULL, SCB_TAG); | |
3365 | aic_outb(p, 0, SCB_CONTROL); | |
3366 | next = aic_inb(p, SCB_NEXT); | |
3367 | } | |
3368 | } | |
3369 | } | |
3370 | ||
3371 | /* | |
3372 | * Go through the hardware SCB array looking for commands that | |
3373 | * were active but not on any list. | |
3374 | */ | |
3375 | if (init_lists) | |
3376 | { | |
3377 | aic_outb(p, SCB_LIST_NULL, FREE_SCBH); | |
3378 | aic_outb(p, SCB_LIST_NULL, WAITING_SCBH); | |
3379 | aic_outb(p, SCB_LIST_NULL, DISCONNECTED_SCBH); | |
3380 | } | |
3381 | for (i = p->scb_data->maxhscbs - 1; i >= 0; i--) | |
3382 | { | |
3383 | unsigned char scbid; | |
3384 | ||
3385 | aic_outb(p, i, SCBPTR); | |
3386 | if (init_lists) | |
3387 | { | |
3388 | aic_outb(p, SCB_LIST_NULL, SCB_TAG); | |
3389 | aic_outb(p, SCB_LIST_NULL, SCB_NEXT); | |
3390 | aic_outb(p, 0, SCB_CONTROL); | |
3391 | aic7xxx_add_curscb_to_free_list(p); | |
3392 | } | |
3393 | else | |
3394 | { | |
3395 | scbid = aic_inb(p, SCB_TAG); | |
3396 | if (scbid < p->scb_data->numscbs) | |
3397 | { | |
3398 | scbp = p->scb_data->scb_array[scbid]; | |
3399 | if (aic7xxx_match_scb(p, scbp, target, channel, lun, tag)) | |
3400 | { | |
3401 | aic_outb(p, 0, SCB_CONTROL); | |
3402 | aic_outb(p, SCB_LIST_NULL, SCB_TAG); | |
3403 | aic7xxx_add_curscb_to_free_list(p); | |
3404 | } | |
3405 | } | |
3406 | } | |
3407 | } | |
3408 | ||
3409 | /* | |
3410 | * Go through the entire SCB array now and look for commands for | |
3411 | * for this target that are stillactive. These are other (most likely | |
3412 | * tagged) commands that were disconnected when the reset occurred. | |
3413 | * Any commands we find here we know this about, it wasn't on any queue, | |
3414 | * it wasn't in the qinfifo, it wasn't in the disconnected or waiting | |
3415 | * lists, so it really must have been a paged out SCB. In that case, | |
3416 | * we shouldn't need to bother with updating any counters, just mark | |
3417 | * the correct flags and go on. | |
3418 | */ | |
3419 | for (i = 0; i < p->scb_data->numscbs; i++) | |
3420 | { | |
3421 | scbp = p->scb_data->scb_array[i]; | |
3422 | if ((scbp->flags & SCB_ACTIVE) && | |
3423 | aic7xxx_match_scb(p, scbp, target, channel, lun, tag) && | |
3424 | !aic7xxx_scb_on_qoutfifo(p, scbp)) | |
3425 | { | |
3426 | if (scbp->flags & SCB_WAITINGQ) | |
3427 | { | |
3428 | scbq_remove(&p->waiting_scbs, scbp); | |
3429 | scbq_remove(&AIC_DEV(scbp->cmd)->delayed_scbs, scbp); | |
3430 | AIC_DEV(scbp->cmd)->active_cmds++; | |
3431 | p->activescbs++; | |
3432 | } | |
3433 | scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE; | |
3434 | scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ); | |
3435 | } | |
3436 | } | |
3437 | ||
3438 | aic_outb(p, active_scb, SCBPTR); | |
3439 | } | |
3440 | ||
3441 | ||
3442 | /*+F************************************************************************* | |
3443 | * Function: | |
3444 | * aic7xxx_clear_intstat | |
3445 | * | |
3446 | * Description: | |
3447 | * Clears the interrupt status. | |
3448 | *-F*************************************************************************/ | |
3449 | static void | |
3450 | aic7xxx_clear_intstat(struct aic7xxx_host *p) | |
3451 | { | |
3452 | /* Clear any interrupt conditions this may have caused. */ | |
3453 | aic_outb(p, CLRSELDO | CLRSELDI | CLRSELINGO, CLRSINT0); | |
3454 | aic_outb(p, CLRSELTIMEO | CLRATNO | CLRSCSIRSTI | CLRBUSFREE | CLRSCSIPERR | | |
3455 | CLRPHASECHG | CLRREQINIT, CLRSINT1); | |
3456 | aic_outb(p, CLRSCSIINT | CLRSEQINT | CLRBRKADRINT | CLRPARERR, CLRINT); | |
3457 | } | |
3458 | ||
3459 | /*+F************************************************************************* | |
3460 | * Function: | |
3461 | * aic7xxx_reset_current_bus | |
3462 | * | |
3463 | * Description: | |
3464 | * Reset the current SCSI bus. | |
3465 | *-F*************************************************************************/ | |
3466 | static void | |
3467 | aic7xxx_reset_current_bus(struct aic7xxx_host *p) | |
3468 | { | |
3469 | ||
3470 | /* Disable reset interrupts. */ | |
3471 | aic_outb(p, aic_inb(p, SIMODE1) & ~ENSCSIRST, SIMODE1); | |
3472 | ||
3473 | /* Turn off the bus' current operations, after all, we shouldn't have any | |
3474 | * valid commands left to cause a RSELI and SELO once we've tossed the | |
3475 | * bus away with this reset, so we might as well shut down the sequencer | |
3476 | * until the bus is restarted as oppossed to saving the current settings | |
3477 | * and restoring them (which makes no sense to me). */ | |
3478 | ||
3479 | /* Turn on the bus reset. */ | |
3480 | aic_outb(p, aic_inb(p, SCSISEQ) | SCSIRSTO, SCSISEQ); | |
3481 | while ( (aic_inb(p, SCSISEQ) & SCSIRSTO) == 0) | |
3482 | mdelay(5); | |
3483 | ||
3484 | /* | |
3485 | * Some of the new Ultra2 chipsets need a longer delay after a chip | |
3486 | * reset than just the init setup creates, so we have to delay here | |
3487 | * before we go into a reset in order to make the chips happy. | |
3488 | */ | |
3489 | if (p->features & AHC_ULTRA2) | |
3490 | mdelay(250); | |
3491 | else | |
3492 | mdelay(50); | |
3493 | ||
3494 | /* Turn off the bus reset. */ | |
3495 | aic_outb(p, 0, SCSISEQ); | |
3496 | mdelay(10); | |
3497 | ||
3498 | aic7xxx_clear_intstat(p); | |
3499 | /* Re-enable reset interrupts. */ | |
3500 | aic_outb(p, aic_inb(p, SIMODE1) | ENSCSIRST, SIMODE1); | |
3501 | ||
3502 | } | |
3503 | ||
3504 | /*+F************************************************************************* | |
3505 | * Function: | |
3506 | * aic7xxx_reset_channel | |
3507 | * | |
3508 | * Description: | |
3509 | * Reset the channel. | |
3510 | *-F*************************************************************************/ | |
3511 | static void | |
3512 | aic7xxx_reset_channel(struct aic7xxx_host *p, int channel, int initiate_reset) | |
3513 | { | |
3514 | unsigned long offset_min, offset_max; | |
3515 | unsigned char sblkctl; | |
3516 | int cur_channel; | |
3517 | ||
3518 | if (aic7xxx_verbose & VERBOSE_RESET_PROCESS) | |
3519 | printk(INFO_LEAD "Reset channel called, %s initiate reset.\n", | |
3520 | p->host_no, channel, -1, -1, (initiate_reset==TRUE) ? "will" : "won't" ); | |
3521 | ||
3522 | ||
3523 | if (channel == 1) | |
3524 | { | |
3525 | offset_min = 8; | |
3526 | offset_max = 16; | |
3527 | } | |
3528 | else | |
3529 | { | |
3530 | if (p->features & AHC_TWIN) | |
3531 | { | |
3532 | /* Channel A */ | |
3533 | offset_min = 0; | |
3534 | offset_max = 8; | |
3535 | } | |
3536 | else | |
3537 | { | |
3538 | offset_min = 0; | |
3539 | if (p->features & AHC_WIDE) | |
3540 | { | |
3541 | offset_max = 16; | |
3542 | } | |
3543 | else | |
3544 | { | |
3545 | offset_max = 8; | |
3546 | } | |
3547 | } | |
3548 | } | |
3549 | ||
3550 | while (offset_min < offset_max) | |
3551 | { | |
3552 | /* | |
3553 | * Revert to async/narrow transfers until we renegotiate. | |
3554 | */ | |
3555 | aic_outb(p, 0, TARG_SCSIRATE + offset_min); | |
3556 | if (p->features & AHC_ULTRA2) | |
3557 | { | |
3558 | aic_outb(p, 0, TARG_OFFSET + offset_min); | |
3559 | } | |
3560 | offset_min++; | |
3561 | } | |
3562 | ||
3563 | /* | |
3564 | * Reset the bus and unpause/restart the controller | |
3565 | */ | |
3566 | sblkctl = aic_inb(p, SBLKCTL); | |
3567 | if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 ) | |
3568 | cur_channel = (sblkctl & SELBUSB) >> 3; | |
3569 | else | |
3570 | cur_channel = 0; | |
3571 | if ( (cur_channel != channel) && (p->features & AHC_TWIN) ) | |
3572 | { | |
3573 | /* | |
3574 | * Case 1: Command for another bus is active | |
3575 | */ | |
3576 | if (aic7xxx_verbose & VERBOSE_RESET_PROCESS) | |
3577 | printk(INFO_LEAD "Stealthily resetting idle channel.\n", p->host_no, | |
3578 | channel, -1, -1); | |
3579 | /* | |
3580 | * Stealthily reset the other bus without upsetting the current bus. | |
3581 | */ | |
3582 | aic_outb(p, sblkctl ^ SELBUSB, SBLKCTL); | |
3583 | aic_outb(p, aic_inb(p, SIMODE1) & ~ENBUSFREE, SIMODE1); | |
3584 | if (initiate_reset) | |
3585 | { | |
3586 | aic7xxx_reset_current_bus(p); | |
3587 | } | |
3588 | aic_outb(p, aic_inb(p, SCSISEQ) & (ENSELI|ENRSELI|ENAUTOATNP), SCSISEQ); | |
3589 | aic7xxx_clear_intstat(p); | |
3590 | aic_outb(p, sblkctl, SBLKCTL); | |
3591 | } | |
3592 | else | |
3593 | { | |
3594 | /* | |
3595 | * Case 2: A command from this bus is active or we're idle. | |
3596 | */ | |
3597 | if (aic7xxx_verbose & VERBOSE_RESET_PROCESS) | |
3598 | printk(INFO_LEAD "Resetting currently active channel.\n", p->host_no, | |
3599 | channel, -1, -1); | |
3600 | aic_outb(p, aic_inb(p, SIMODE1) & ~(ENBUSFREE|ENREQINIT), | |
3601 | SIMODE1); | |
3602 | p->flags &= ~AHC_HANDLING_REQINITS; | |
3603 | p->msg_type = MSG_TYPE_NONE; | |
3604 | p->msg_len = 0; | |
3605 | if (initiate_reset) | |
3606 | { | |
3607 | aic7xxx_reset_current_bus(p); | |
3608 | } | |
3609 | aic_outb(p, aic_inb(p, SCSISEQ) & (ENSELI|ENRSELI|ENAUTOATNP), SCSISEQ); | |
3610 | aic7xxx_clear_intstat(p); | |
3611 | } | |
3612 | if (aic7xxx_verbose & VERBOSE_RESET_RETURN) | |
3613 | printk(INFO_LEAD "Channel reset\n", p->host_no, channel, -1, -1); | |
3614 | /* | |
3615 | * Clean up all the state information for the pending transactions | |
3616 | * on this bus. | |
3617 | */ | |
3618 | aic7xxx_reset_device(p, ALL_TARGETS, channel, ALL_LUNS, SCB_LIST_NULL); | |
3619 | ||
3620 | if ( !(p->features & AHC_TWIN) ) | |
3621 | { | |
3622 | restart_sequencer(p); | |
3623 | } | |
3624 | ||
3625 | return; | |
3626 | } | |
3627 | ||
3628 | /*+F************************************************************************* | |
3629 | * Function: | |
3630 | * aic7xxx_run_waiting_queues | |
3631 | * | |
3632 | * Description: | |
3633 | * Scan the awaiting_scbs queue downloading and starting as many | |
3634 | * scbs as we can. | |
3635 | *-F*************************************************************************/ | |
3636 | static void | |
3637 | aic7xxx_run_waiting_queues(struct aic7xxx_host *p) | |
3638 | { | |
3639 | struct aic7xxx_scb *scb; | |
3640 | struct aic_dev_data *aic_dev; | |
3641 | int sent; | |
3642 | ||
3643 | ||
3644 | if (p->waiting_scbs.head == NULL) | |
3645 | return; | |
3646 | ||
3647 | sent = 0; | |
3648 | ||
3649 | /* | |
3650 | * First handle SCBs that are waiting but have been assigned a slot. | |
3651 | */ | |
3652 | while ((scb = scbq_remove_head(&p->waiting_scbs)) != NULL) | |
3653 | { | |
3654 | aic_dev = scb->cmd->device->hostdata; | |
3655 | if ( !scb->tag_action ) | |
3656 | { | |
3657 | aic_dev->temp_q_depth = 1; | |
3658 | } | |
3659 | if ( aic_dev->active_cmds >= aic_dev->temp_q_depth) | |
3660 | { | |
3661 | scbq_insert_tail(&aic_dev->delayed_scbs, scb); | |
3662 | } | |
3663 | else | |
3664 | { | |
3665 | scb->flags &= ~SCB_WAITINGQ; | |
3666 | aic_dev->active_cmds++; | |
3667 | p->activescbs++; | |
3668 | if ( !(scb->tag_action) ) | |
3669 | { | |
3670 | aic7xxx_busy_target(p, scb); | |
3671 | } | |
3672 | p->qinfifo[p->qinfifonext++] = scb->hscb->tag; | |
3673 | sent++; | |
3674 | } | |
3675 | } | |
3676 | if (sent) | |
3677 | { | |
3678 | if (p->features & AHC_QUEUE_REGS) | |
3679 | aic_outb(p, p->qinfifonext, HNSCB_QOFF); | |
3680 | else | |
3681 | { | |
3682 | pause_sequencer(p); | |
3683 | aic_outb(p, p->qinfifonext, KERNEL_QINPOS); | |
3684 | unpause_sequencer(p, FALSE); | |
3685 | } | |
3686 | if (p->activescbs > p->max_activescbs) | |
3687 | p->max_activescbs = p->activescbs; | |
3688 | } | |
3689 | } | |
3690 | ||
3691 | #ifdef CONFIG_PCI | |
3692 | ||
3693 | #define DPE 0x80 | |
3694 | #define SSE 0x40 | |
3695 | #define RMA 0x20 | |
3696 | #define RTA 0x10 | |
3697 | #define STA 0x08 | |
3698 | #define DPR 0x01 | |
3699 | ||
3700 | /*+F************************************************************************* | |
3701 | * Function: | |
3702 | * aic7xxx_pci_intr | |
3703 | * | |
3704 | * Description: | |
3705 | * Check the scsi card for PCI errors and clear the interrupt | |
3706 | * | |
3707 | * NOTE: If you don't have this function and a 2940 card encounters | |
3708 | * a PCI error condition, the machine will end up locked as the | |
3709 | * interrupt handler gets slammed with non-stop PCI error interrupts | |
3710 | *-F*************************************************************************/ | |
3711 | static void | |
3712 | aic7xxx_pci_intr(struct aic7xxx_host *p) | |
3713 | { | |
3714 | unsigned char status1; | |
3715 | ||
3716 | pci_read_config_byte(p->pdev, PCI_STATUS + 1, &status1); | |
3717 | ||
3718 | if ( (status1 & DPE) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) ) | |
3719 | printk(WARN_LEAD "Data Parity Error during PCI address or PCI write" | |
3720 | "phase.\n", p->host_no, -1, -1, -1); | |
3721 | if ( (status1 & SSE) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) ) | |
3722 | printk(WARN_LEAD "Signal System Error Detected\n", p->host_no, | |
3723 | -1, -1, -1); | |
3724 | if ( (status1 & RMA) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) ) | |
3725 | printk(WARN_LEAD "Received a PCI Master Abort\n", p->host_no, | |
3726 | -1, -1, -1); | |
3727 | if ( (status1 & RTA) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) ) | |
3728 | printk(WARN_LEAD "Received a PCI Target Abort\n", p->host_no, | |
3729 | -1, -1, -1); | |
3730 | if ( (status1 & STA) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) ) | |
3731 | printk(WARN_LEAD "Signaled a PCI Target Abort\n", p->host_no, | |
3732 | -1, -1, -1); | |
3733 | if ( (status1 & DPR) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) ) | |
3734 | printk(WARN_LEAD "Data Parity Error has been reported via PCI pin " | |
3735 | "PERR#\n", p->host_no, -1, -1, -1); | |
3736 | ||
3737 | pci_write_config_byte(p->pdev, PCI_STATUS + 1, status1); | |
3738 | if (status1 & (DPR|RMA|RTA)) | |
3739 | aic_outb(p, CLRPARERR, CLRINT); | |
3740 | ||
3741 | if ( (aic7xxx_panic_on_abort) && (p->spurious_int > 500) ) | |
3742 | aic7xxx_panic_abort(p, NULL); | |
3743 | ||
3744 | } | |
3745 | #endif /* CONFIG_PCI */ | |
3746 | ||
3747 | /*+F************************************************************************* | |
3748 | * Function: | |
3749 | * aic7xxx_construct_ppr | |
3750 | * | |
3751 | * Description: | |
3752 | * Build up a Parallel Protocol Request message for use with SCSI-3 | |
3753 | * devices. | |
3754 | *-F*************************************************************************/ | |
3755 | static void | |
3756 | aic7xxx_construct_ppr(struct aic7xxx_host *p, struct aic7xxx_scb *scb) | |
3757 | { | |
3758 | p->msg_buf[p->msg_index++] = MSG_EXTENDED; | |
3759 | p->msg_buf[p->msg_index++] = MSG_EXT_PPR_LEN; | |
3760 | p->msg_buf[p->msg_index++] = MSG_EXT_PPR; | |
3761 | p->msg_buf[p->msg_index++] = AIC_DEV(scb->cmd)->goal.period; | |
3762 | p->msg_buf[p->msg_index++] = 0; | |
3763 | p->msg_buf[p->msg_index++] = AIC_DEV(scb->cmd)->goal.offset; | |
3764 | p->msg_buf[p->msg_index++] = AIC_DEV(scb->cmd)->goal.width; | |
3765 | p->msg_buf[p->msg_index++] = AIC_DEV(scb->cmd)->goal.options; | |
3766 | p->msg_len += 8; | |
3767 | } | |
3768 | ||
3769 | /*+F************************************************************************* | |
3770 | * Function: | |
3771 | * aic7xxx_construct_sdtr | |
3772 | * | |
3773 | * Description: | |
3774 | * Constucts a synchronous data transfer message in the message | |
3775 | * buffer on the sequencer. | |
3776 | *-F*************************************************************************/ | |
3777 | static void | |
3778 | aic7xxx_construct_sdtr(struct aic7xxx_host *p, unsigned char period, | |
3779 | unsigned char offset) | |
3780 | { | |
3781 | p->msg_buf[p->msg_index++] = MSG_EXTENDED; | |
3782 | p->msg_buf[p->msg_index++] = MSG_EXT_SDTR_LEN; | |
3783 | p->msg_buf[p->msg_index++] = MSG_EXT_SDTR; | |
3784 | p->msg_buf[p->msg_index++] = period; | |
3785 | p->msg_buf[p->msg_index++] = offset; | |
3786 | p->msg_len += 5; | |
3787 | } | |
3788 | ||
3789 | /*+F************************************************************************* | |
3790 | * Function: | |
3791 | * aic7xxx_construct_wdtr | |
3792 | * | |
3793 | * Description: | |
3794 | * Constucts a wide data transfer message in the message buffer | |
3795 | * on the sequencer. | |
3796 | *-F*************************************************************************/ | |
3797 | static void | |
3798 | aic7xxx_construct_wdtr(struct aic7xxx_host *p, unsigned char bus_width) | |
3799 | { | |
3800 | p->msg_buf[p->msg_index++] = MSG_EXTENDED; | |
3801 | p->msg_buf[p->msg_index++] = MSG_EXT_WDTR_LEN; | |
3802 | p->msg_buf[p->msg_index++] = MSG_EXT_WDTR; | |
3803 | p->msg_buf[p->msg_index++] = bus_width; | |
3804 | p->msg_len += 4; | |
3805 | } | |
3806 | ||
3807 | /*+F************************************************************************* | |
3808 | * Function: | |
3809 | * aic7xxx_calc_residual | |
3810 | * | |
3811 | * Description: | |
3812 | * Calculate the residual data not yet transferred. | |
3813 | *-F*************************************************************************/ | |
3814 | static void | |
3815 | aic7xxx_calculate_residual (struct aic7xxx_host *p, struct aic7xxx_scb *scb) | |
3816 | { | |
c1278289 H |
3817 | struct aic7xxx_hwscb *hscb; |
3818 | struct scsi_cmnd *cmd; | |
3819 | int actual, i; | |
1da177e4 LT |
3820 | |
3821 | cmd = scb->cmd; | |
3822 | hscb = scb->hscb; | |
3823 | ||
3824 | /* | |
3825 | * Don't destroy valid residual information with | |
3826 | * residual coming from a check sense operation. | |
3827 | */ | |
3828 | if (((scb->hscb->control & DISCONNECTED) == 0) && | |
3829 | (scb->flags & SCB_SENSE) == 0) | |
3830 | { | |
3831 | /* | |
3832 | * We had an underflow. At this time, there's only | |
3833 | * one other driver that bothers to check for this, | |
3834 | * and cmd->underflow seems to be set rather half- | |
3835 | * heartedly in the higher-level SCSI code. | |
3836 | */ | |
3837 | actual = scb->sg_length; | |
3838 | for (i=1; i < hscb->residual_SG_segment_count; i++) | |
3839 | { | |
3840 | actual -= scb->sg_list[scb->sg_count - i].length; | |
3841 | } | |
3842 | actual -= (hscb->residual_data_count[2] << 16) | | |
3843 | (hscb->residual_data_count[1] << 8) | | |
3844 | hscb->residual_data_count[0]; | |
3845 | ||
3846 | if (actual < cmd->underflow) | |
3847 | { | |
3848 | if (aic7xxx_verbose & VERBOSE_MINOR_ERROR) | |
3849 | { | |
3850 | printk(INFO_LEAD "Underflow - Wanted %u, %s %u, residual SG " | |
3851 | "count %d.\n", p->host_no, CTL_OF_SCB(scb), cmd->underflow, | |
3852 | (rq_data_dir(cmd->request) == WRITE) ? "wrote" : "read", actual, | |
3853 | hscb->residual_SG_segment_count); | |
3854 | printk(INFO_LEAD "status 0x%x.\n", p->host_no, CTL_OF_SCB(scb), | |
3855 | hscb->target_status); | |
3856 | } | |
3857 | /* | |
3858 | * In 2.4, only send back the residual information, don't flag this | |
3859 | * as an error. Before 2.4 we had to flag this as an error because | |
3860 | * the mid layer didn't check residual data counts to see if the | |
3861 | * command needs retried. | |
3862 | */ | |
22c1a660 | 3863 | scsi_set_resid(cmd, scb->sg_length - actual); |
1da177e4 LT |
3864 | aic7xxx_status(cmd) = hscb->target_status; |
3865 | } | |
3866 | } | |
3867 | ||
3868 | /* | |
3869 | * Clean out the residual information in the SCB for the | |
3870 | * next consumer. | |
3871 | */ | |
3872 | hscb->residual_data_count[2] = 0; | |
3873 | hscb->residual_data_count[1] = 0; | |
3874 | hscb->residual_data_count[0] = 0; | |
3875 | hscb->residual_SG_segment_count = 0; | |
3876 | } | |
3877 | ||
3878 | /*+F************************************************************************* | |
3879 | * Function: | |
3880 | * aic7xxx_handle_device_reset | |
3881 | * | |
3882 | * Description: | |
3883 | * Interrupt handler for sequencer interrupts (SEQINT). | |
3884 | *-F*************************************************************************/ | |
3885 | static void | |
3886 | aic7xxx_handle_device_reset(struct aic7xxx_host *p, int target, int channel) | |
3887 | { | |
3888 | unsigned char tindex = target; | |
3889 | ||
3890 | tindex |= ((channel & 0x01) << 3); | |
3891 | ||
3892 | /* | |
3893 | * Go back to async/narrow transfers and renegotiate. | |
3894 | */ | |
3895 | aic_outb(p, 0, TARG_SCSIRATE + tindex); | |
3896 | if (p->features & AHC_ULTRA2) | |
3897 | aic_outb(p, 0, TARG_OFFSET + tindex); | |
3898 | aic7xxx_reset_device(p, target, channel, ALL_LUNS, SCB_LIST_NULL); | |
3899 | if (aic7xxx_verbose & VERBOSE_RESET_PROCESS) | |
3900 | printk(INFO_LEAD "Bus Device Reset delivered.\n", p->host_no, channel, | |
3901 | target, -1); | |
3902 | aic7xxx_run_done_queue(p, /*complete*/ TRUE); | |
3903 | } | |
3904 | ||
3905 | /*+F************************************************************************* | |
3906 | * Function: | |
3907 | * aic7xxx_handle_seqint | |
3908 | * | |
3909 | * Description: | |
3910 | * Interrupt handler for sequencer interrupts (SEQINT). | |
3911 | *-F*************************************************************************/ | |
3912 | static void | |
3913 | aic7xxx_handle_seqint(struct aic7xxx_host *p, unsigned char intstat) | |
3914 | { | |
3915 | struct aic7xxx_scb *scb; | |
3916 | struct aic_dev_data *aic_dev; | |
3917 | unsigned short target_mask; | |
3918 | unsigned char target, lun, tindex; | |
3919 | unsigned char queue_flag = FALSE; | |
3920 | char channel; | |
3921 | int result; | |
3922 | ||
3923 | target = ((aic_inb(p, SAVED_TCL) >> 4) & 0x0f); | |
3924 | if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 ) | |
3925 | channel = (aic_inb(p, SBLKCTL) & SELBUSB) >> 3; | |
3926 | else | |
3927 | channel = 0; | |
3928 | tindex = target + (channel << 3); | |
3929 | lun = aic_inb(p, SAVED_TCL) & 0x07; | |
3930 | target_mask = (0x01 << tindex); | |
3931 | ||
3932 | /* | |
3933 | * Go ahead and clear the SEQINT now, that avoids any interrupt race | |
3934 | * conditions later on in case we enable some other interrupt. | |
3935 | */ | |
3936 | aic_outb(p, CLRSEQINT, CLRINT); | |
3937 | switch (intstat & SEQINT_MASK) | |
3938 | { | |
3939 | case NO_MATCH: | |
3940 | { | |
3941 | aic_outb(p, aic_inb(p, SCSISEQ) & (ENSELI|ENRSELI|ENAUTOATNP), | |
3942 | SCSISEQ); | |
3943 | printk(WARN_LEAD "No active SCB for reconnecting target - Issuing " | |
3944 | "BUS DEVICE RESET.\n", p->host_no, channel, target, lun); | |
3945 | printk(WARN_LEAD " SAVED_TCL=0x%x, ARG_1=0x%x, SEQADDR=0x%x\n", | |
3946 | p->host_no, channel, target, lun, | |
3947 | aic_inb(p, SAVED_TCL), aic_inb(p, ARG_1), | |
3948 | (aic_inb(p, SEQADDR1) << 8) | aic_inb(p, SEQADDR0)); | |
3949 | if (aic7xxx_panic_on_abort) | |
3950 | aic7xxx_panic_abort(p, NULL); | |
3951 | } | |
3952 | break; | |
3953 | ||
3954 | case SEND_REJECT: | |
3955 | { | |
3956 | if (aic7xxx_verbose & VERBOSE_MINOR_ERROR) | |
3957 | printk(INFO_LEAD "Rejecting unknown message (0x%x) received from " | |
3958 | "target, SEQ_FLAGS=0x%x\n", p->host_no, channel, target, lun, | |
3959 | aic_inb(p, ACCUM), aic_inb(p, SEQ_FLAGS)); | |
3960 | } | |
3961 | break; | |
3962 | ||
3963 | case NO_IDENT: | |
3964 | { | |
3965 | /* | |
3966 | * The reconnecting target either did not send an identify | |
3967 | * message, or did, but we didn't find an SCB to match and | |
3968 | * before it could respond to our ATN/abort, it hit a dataphase. | |
3969 | * The only safe thing to do is to blow it away with a bus | |
3970 | * reset. | |
3971 | */ | |
3972 | if (aic7xxx_verbose & (VERBOSE_SEQINT | VERBOSE_RESET_MID)) | |
3973 | printk(INFO_LEAD "Target did not send an IDENTIFY message; " | |
3974 | "LASTPHASE 0x%x, SAVED_TCL 0x%x\n", p->host_no, channel, target, | |
3975 | lun, aic_inb(p, LASTPHASE), aic_inb(p, SAVED_TCL)); | |
3976 | ||
3977 | aic7xxx_reset_channel(p, channel, /*initiate reset*/ TRUE); | |
3978 | aic7xxx_run_done_queue(p, TRUE); | |
3979 | ||
3980 | } | |
3981 | break; | |
3982 | ||
3983 | case BAD_PHASE: | |
3984 | if (aic_inb(p, LASTPHASE) == P_BUSFREE) | |
3985 | { | |
3986 | if (aic7xxx_verbose & VERBOSE_SEQINT) | |
3987 | printk(INFO_LEAD "Missed busfree.\n", p->host_no, channel, | |
3988 | target, lun); | |
3989 | restart_sequencer(p); | |
3990 | } | |
3991 | else | |
3992 | { | |
3993 | if (aic7xxx_verbose & VERBOSE_SEQINT) | |
3994 | printk(INFO_LEAD "Unknown scsi bus phase, continuing\n", p->host_no, | |
3995 | channel, target, lun); | |
3996 | } | |
3997 | break; | |
3998 | ||
3999 | case EXTENDED_MSG: | |
4000 | { | |
4001 | p->msg_type = MSG_TYPE_INITIATOR_MSGIN; | |
4002 | p->msg_len = 0; | |
4003 | p->msg_index = 0; | |
4004 | ||
4005 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
4006 | if (aic7xxx_verbose > 0xffff) | |
4007 | printk(INFO_LEAD "Enabling REQINITs for MSG_IN\n", p->host_no, | |
4008 | channel, target, lun); | |
4009 | #endif | |
4010 | ||
4011 | /* | |
4012 | * To actually receive the message, simply turn on | |
4013 | * REQINIT interrupts and let our interrupt handler | |
4014 | * do the rest (REQINIT should already be true). | |
4015 | */ | |
4016 | p->flags |= AHC_HANDLING_REQINITS; | |
4017 | aic_outb(p, aic_inb(p, SIMODE1) | ENREQINIT, SIMODE1); | |
4018 | ||
4019 | /* | |
4020 | * We don't want the sequencer unpaused yet so we return early | |
4021 | */ | |
4022 | return; | |
4023 | } | |
4024 | ||
4025 | case REJECT_MSG: | |
4026 | { | |
4027 | /* | |
4028 | * What we care about here is if we had an outstanding SDTR | |
4029 | * or WDTR message for this target. If we did, this is a | |
4030 | * signal that the target is refusing negotiation. | |
4031 | */ | |
4032 | unsigned char scb_index; | |
4033 | unsigned char last_msg; | |
4034 | ||
4035 | scb_index = aic_inb(p, SCB_TAG); | |
4036 | scb = p->scb_data->scb_array[scb_index]; | |
4037 | aic_dev = AIC_DEV(scb->cmd); | |
4038 | last_msg = aic_inb(p, LAST_MSG); | |
4039 | ||
4040 | if ( (last_msg == MSG_IDENTIFYFLAG) && | |
4041 | (scb->tag_action) && | |
4042 | !(scb->flags & SCB_MSGOUT_BITS) ) | |
4043 | { | |
4044 | if (scb->tag_action == MSG_ORDERED_Q_TAG) | |
4045 | { | |
4046 | /* | |
4047 | * OK...the device seems able to accept tagged commands, but | |
4048 | * not ordered tag commands, only simple tag commands. So, we | |
4049 | * disable ordered tag commands and go on with life just like | |
4050 | * normal. | |
4051 | */ | |
4052 | scsi_adjust_queue_depth(scb->cmd->device, MSG_SIMPLE_TAG, | |
4053 | scb->cmd->device->queue_depth); | |
4054 | scb->tag_action = MSG_SIMPLE_Q_TAG; | |
4055 | scb->hscb->control &= ~SCB_TAG_TYPE; | |
4056 | scb->hscb->control |= MSG_SIMPLE_Q_TAG; | |
4057 | aic_outb(p, scb->hscb->control, SCB_CONTROL); | |
4058 | /* | |
4059 | * OK..we set the tag type to simple tag command, now we re-assert | |
4060 | * ATNO and hope this will take us into the identify phase again | |
4061 | * so we can resend the tag type and info to the device. | |
4062 | */ | |
4063 | aic_outb(p, MSG_IDENTIFYFLAG, MSG_OUT); | |
4064 | aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO); | |
4065 | } | |
4066 | else if (scb->tag_action == MSG_SIMPLE_Q_TAG) | |
4067 | { | |
4068 | unsigned char i; | |
4069 | struct aic7xxx_scb *scbp; | |
4070 | int old_verbose; | |
4071 | /* | |
4072 | * Hmmmm....the device is flaking out on tagged commands. | |
4073 | */ | |
4074 | scsi_adjust_queue_depth(scb->cmd->device, 0 /* untagged */, | |
4075 | p->host->cmd_per_lun); | |
4076 | aic_dev->max_q_depth = aic_dev->temp_q_depth = 1; | |
4077 | /* | |
4078 | * We set this command up as a bus device reset. However, we have | |
4079 | * to clear the tag type as it's causing us problems. We shouldnt | |
4080 | * have to worry about any other commands being active, since if | |
4081 | * the device is refusing tagged commands, this should be the | |
4082 | * first tagged command sent to the device, however, we do have | |
4083 | * to worry about any other tagged commands that may already be | |
4084 | * in the qinfifo. The easiest way to do this, is to issue a BDR, | |
4085 | * send all the commands back to the mid level code, then let them | |
4086 | * come back and get rebuilt as untagged commands. | |
4087 | */ | |
4088 | scb->tag_action = 0; | |
4089 | scb->hscb->control &= ~(TAG_ENB | SCB_TAG_TYPE); | |
4090 | aic_outb(p, scb->hscb->control, SCB_CONTROL); | |
4091 | ||
4092 | old_verbose = aic7xxx_verbose; | |
4093 | aic7xxx_verbose &= ~(VERBOSE_RESET|VERBOSE_ABORT); | |
4094 | for (i=0; i < p->scb_data->numscbs; i++) | |
4095 | { | |
4096 | scbp = p->scb_data->scb_array[i]; | |
4097 | if ((scbp->flags & SCB_ACTIVE) && (scbp != scb)) | |
4098 | { | |
4099 | if (aic7xxx_match_scb(p, scbp, target, channel, lun, i)) | |
4100 | { | |
4101 | aic7xxx_reset_device(p, target, channel, lun, i); | |
4102 | } | |
4103 | } | |
4104 | } | |
4105 | aic7xxx_run_done_queue(p, TRUE); | |
4106 | aic7xxx_verbose = old_verbose; | |
4107 | /* | |
4108 | * Wait until after the for loop to set the busy index since | |
4109 | * aic7xxx_reset_device will clear the busy index during its | |
4110 | * operation. | |
4111 | */ | |
4112 | aic7xxx_busy_target(p, scb); | |
4113 | printk(INFO_LEAD "Device is refusing tagged commands, using " | |
4114 | "untagged I/O.\n", p->host_no, channel, target, lun); | |
4115 | aic_outb(p, MSG_IDENTIFYFLAG, MSG_OUT); | |
4116 | aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO); | |
4117 | } | |
4118 | } | |
4119 | else if (scb->flags & SCB_MSGOUT_PPR) | |
4120 | { | |
4121 | /* | |
4122 | * As per the draft specs, any device capable of supporting any of | |
4123 | * the option values other than 0 are not allowed to reject the | |
4124 | * PPR message. Instead, they must negotiate out what they do | |
4125 | * support instead of rejecting our offering or else they cause | |
4126 | * a parity error during msg_out phase to signal that they don't | |
4127 | * like our settings. | |
4128 | */ | |
4129 | aic_dev->needppr = aic_dev->needppr_copy = 0; | |
4130 | aic7xxx_set_width(p, target, channel, lun, MSG_EXT_WDTR_BUS_8_BIT, | |
4131 | (AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE), aic_dev); | |
4132 | aic7xxx_set_syncrate(p, NULL, target, channel, 0, 0, 0, | |
4133 | AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE, | |
4134 | aic_dev); | |
4135 | aic_dev->goal.options = aic_dev->dtr_pending = 0; | |
4136 | scb->flags &= ~SCB_MSGOUT_BITS; | |
4137 | if(aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
4138 | { | |
4139 | printk(INFO_LEAD "Device is rejecting PPR messages, falling " | |
4140 | "back.\n", p->host_no, channel, target, lun); | |
4141 | } | |
4142 | if ( aic_dev->goal.width ) | |
4143 | { | |
4144 | aic_dev->needwdtr = aic_dev->needwdtr_copy = 1; | |
4145 | aic_dev->dtr_pending = 1; | |
4146 | scb->flags |= SCB_MSGOUT_WDTR; | |
4147 | } | |
4148 | if ( aic_dev->goal.offset ) | |
4149 | { | |
4150 | aic_dev->needsdtr = aic_dev->needsdtr_copy = 1; | |
4151 | if( !aic_dev->dtr_pending ) | |
4152 | { | |
4153 | aic_dev->dtr_pending = 1; | |
4154 | scb->flags |= SCB_MSGOUT_SDTR; | |
4155 | } | |
4156 | } | |
4157 | if ( aic_dev->dtr_pending ) | |
4158 | { | |
4159 | aic_outb(p, HOST_MSG, MSG_OUT); | |
4160 | aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO); | |
4161 | } | |
4162 | } | |
4163 | else if (scb->flags & SCB_MSGOUT_WDTR) | |
4164 | { | |
4165 | /* | |
4166 | * note 8bit xfers and clear flag | |
4167 | */ | |
4168 | aic_dev->needwdtr = aic_dev->needwdtr_copy = 0; | |
4169 | scb->flags &= ~SCB_MSGOUT_BITS; | |
4170 | aic7xxx_set_width(p, target, channel, lun, MSG_EXT_WDTR_BUS_8_BIT, | |
4171 | (AHC_TRANS_ACTIVE|AHC_TRANS_GOAL|AHC_TRANS_CUR), aic_dev); | |
4172 | aic7xxx_set_syncrate(p, NULL, target, channel, 0, 0, 0, | |
4173 | AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE, | |
4174 | aic_dev); | |
4175 | if(aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
4176 | { | |
4177 | printk(INFO_LEAD "Device is rejecting WDTR messages, using " | |
4178 | "narrow transfers.\n", p->host_no, channel, target, lun); | |
4179 | } | |
4180 | aic_dev->needsdtr = aic_dev->needsdtr_copy; | |
4181 | } | |
4182 | else if (scb->flags & SCB_MSGOUT_SDTR) | |
4183 | { | |
4184 | /* | |
4185 | * note asynch xfers and clear flag | |
4186 | */ | |
4187 | aic_dev->needsdtr = aic_dev->needsdtr_copy = 0; | |
4188 | scb->flags &= ~SCB_MSGOUT_BITS; | |
4189 | aic7xxx_set_syncrate(p, NULL, target, channel, 0, 0, 0, | |
4190 | (AHC_TRANS_CUR|AHC_TRANS_ACTIVE|AHC_TRANS_GOAL), aic_dev); | |
4191 | if(aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
4192 | { | |
4193 | printk(INFO_LEAD "Device is rejecting SDTR messages, using " | |
4194 | "async transfers.\n", p->host_no, channel, target, lun); | |
4195 | } | |
4196 | } | |
4197 | else if (aic7xxx_verbose & VERBOSE_SEQINT) | |
4198 | { | |
4199 | /* | |
4200 | * Otherwise, we ignore it. | |
4201 | */ | |
4202 | printk(INFO_LEAD "Received MESSAGE_REJECT for unknown cause. " | |
4203 | "Ignoring.\n", p->host_no, channel, target, lun); | |
4204 | } | |
4205 | } | |
4206 | break; | |
4207 | ||
4208 | case BAD_STATUS: | |
4209 | { | |
c1278289 H |
4210 | unsigned char scb_index; |
4211 | struct aic7xxx_hwscb *hscb; | |
4212 | struct scsi_cmnd *cmd; | |
4213 | ||
4214 | /* The sequencer will notify us when a command has an error that | |
4215 | * would be of interest to the kernel. This allows us to leave | |
4216 | * the sequencer running in the common case of command completes | |
4217 | * without error. The sequencer will have DMA'd the SCB back | |
4218 | * up to us, so we can reference the drivers SCB array. | |
4219 | * | |
4220 | * Set the default return value to 0 indicating not to send | |
4221 | * sense. The sense code will change this if needed and this | |
4222 | * reduces code duplication. | |
4223 | */ | |
1da177e4 LT |
4224 | aic_outb(p, 0, RETURN_1); |
4225 | scb_index = aic_inb(p, SCB_TAG); | |
4226 | if (scb_index > p->scb_data->numscbs) | |
4227 | { | |
4228 | printk(WARN_LEAD "Invalid SCB during SEQINT 0x%02x, SCB_TAG %d.\n", | |
4229 | p->host_no, channel, target, lun, intstat, scb_index); | |
4230 | break; | |
4231 | } | |
4232 | scb = p->scb_data->scb_array[scb_index]; | |
4233 | hscb = scb->hscb; | |
4234 | ||
4235 | if (!(scb->flags & SCB_ACTIVE) || (scb->cmd == NULL)) | |
4236 | { | |
4237 | printk(WARN_LEAD "Invalid SCB during SEQINT 0x%x, scb %d, flags 0x%x," | |
4238 | " cmd 0x%lx.\n", p->host_no, channel, target, lun, intstat, | |
4239 | scb_index, scb->flags, (unsigned long) scb->cmd); | |
4240 | } | |
4241 | else | |
4242 | { | |
4243 | cmd = scb->cmd; | |
4244 | aic_dev = AIC_DEV(scb->cmd); | |
4245 | hscb->target_status = aic_inb(p, SCB_TARGET_STATUS); | |
4246 | aic7xxx_status(cmd) = hscb->target_status; | |
4247 | ||
4248 | cmd->result = hscb->target_status; | |
4249 | ||
4250 | switch (status_byte(hscb->target_status)) | |
4251 | { | |
4252 | case GOOD: | |
4253 | if (aic7xxx_verbose & VERBOSE_SEQINT) | |
4254 | printk(INFO_LEAD "Interrupted for status of GOOD???\n", | |
4255 | p->host_no, CTL_OF_SCB(scb)); | |
4256 | break; | |
4257 | ||
4258 | case COMMAND_TERMINATED: | |
4259 | case CHECK_CONDITION: | |
4260 | if ( !(scb->flags & SCB_SENSE) ) | |
4261 | { | |
4262 | /* | |
4263 | * Send a sense command to the requesting target. | |
4264 | * XXX - revisit this and get rid of the memcopys. | |
4265 | */ | |
4266 | memcpy(scb->sense_cmd, &generic_sense[0], | |
4267 | sizeof(generic_sense)); | |
4268 | ||
4269 | scb->sense_cmd[1] = (cmd->device->lun << 5); | |
b80ca4f7 | 4270 | scb->sense_cmd[4] = SCSI_SENSE_BUFFERSIZE; |
1da177e4 LT |
4271 | |
4272 | scb->sg_list[0].length = | |
b80ca4f7 | 4273 | cpu_to_le32(SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
4274 | scb->sg_list[0].address = |
4275 | cpu_to_le32(pci_map_single(p->pdev, cmd->sense_buffer, | |
b80ca4f7 | 4276 | SCSI_SENSE_BUFFERSIZE, |
1da177e4 LT |
4277 | PCI_DMA_FROMDEVICE)); |
4278 | ||
4279 | /* | |
4280 | * XXX - We should allow disconnection, but can't as it | |
4281 | * might allow overlapped tagged commands. | |
4282 | */ | |
4283 | /* hscb->control &= DISCENB; */ | |
4284 | hscb->control = 0; | |
4285 | hscb->target_status = 0; | |
4286 | hscb->SG_list_pointer = | |
4287 | cpu_to_le32(SCB_DMA_ADDR(scb, scb->sg_list)); | |
4288 | hscb->SCSI_cmd_pointer = | |
4289 | cpu_to_le32(SCB_DMA_ADDR(scb, scb->sense_cmd)); | |
4290 | hscb->data_count = scb->sg_list[0].length; | |
4291 | hscb->data_pointer = scb->sg_list[0].address; | |
4292 | hscb->SCSI_cmd_length = COMMAND_SIZE(scb->sense_cmd[0]); | |
4293 | hscb->residual_SG_segment_count = 0; | |
4294 | hscb->residual_data_count[0] = 0; | |
4295 | hscb->residual_data_count[1] = 0; | |
4296 | hscb->residual_data_count[2] = 0; | |
4297 | ||
4298 | scb->sg_count = hscb->SG_segment_count = 1; | |
b80ca4f7 | 4299 | scb->sg_length = SCSI_SENSE_BUFFERSIZE; |
1da177e4 LT |
4300 | scb->tag_action = 0; |
4301 | scb->flags |= SCB_SENSE; | |
4302 | /* | |
4303 | * Ensure the target is busy since this will be an | |
4304 | * an untagged request. | |
4305 | */ | |
4306 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
4307 | if (aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
4308 | { | |
4309 | if (scb->flags & SCB_MSGOUT_BITS) | |
4310 | printk(INFO_LEAD "Requesting SENSE with %s\n", p->host_no, | |
4311 | CTL_OF_SCB(scb), (scb->flags & SCB_MSGOUT_SDTR) ? | |
4312 | "SDTR" : "WDTR"); | |
4313 | else | |
4314 | printk(INFO_LEAD "Requesting SENSE, no MSG\n", p->host_no, | |
4315 | CTL_OF_SCB(scb)); | |
4316 | } | |
4317 | #endif | |
4318 | aic7xxx_busy_target(p, scb); | |
4319 | aic_outb(p, SEND_SENSE, RETURN_1); | |
4320 | aic7xxx_error(cmd) = DID_OK; | |
4321 | break; | |
4322 | } /* first time sense, no errors */ | |
4323 | printk(INFO_LEAD "CHECK_CONDITION on REQUEST_SENSE, returning " | |
4324 | "an error.\n", p->host_no, CTL_OF_SCB(scb)); | |
4325 | aic7xxx_error(cmd) = DID_ERROR; | |
4326 | scb->flags &= ~SCB_SENSE; | |
4327 | break; | |
4328 | ||
4329 | case QUEUE_FULL: | |
4330 | queue_flag = TRUE; /* Mark that this is a QUEUE_FULL and */ | |
4331 | case BUSY: /* drop through to here */ | |
4332 | { | |
4333 | struct aic7xxx_scb *next_scbp, *prev_scbp; | |
4334 | unsigned char active_hscb, next_hscb, prev_hscb, scb_index; | |
4335 | /* | |
4336 | * We have to look three places for queued commands: | |
4337 | * 1: p->waiting_scbs queue | |
4338 | * 2: QINFIFO | |
4339 | * 3: WAITING_SCBS list on card (for commands that are started | |
4340 | * but haven't yet made it to the device) | |
4341 | * | |
4342 | * Of special note here is that commands on 2 or 3 above will | |
4343 | * have already been marked as active, while commands on 1 will | |
4344 | * not. The aic7xxx_done() function will want to unmark them | |
4345 | * from active, so any commands we pull off of 1 need to | |
4346 | * up the active count. | |
4347 | */ | |
4348 | next_scbp = p->waiting_scbs.head; | |
4349 | while ( next_scbp != NULL ) | |
4350 | { | |
4351 | prev_scbp = next_scbp; | |
4352 | next_scbp = next_scbp->q_next; | |
4353 | if ( aic7xxx_match_scb(p, prev_scbp, target, channel, lun, | |
4354 | SCB_LIST_NULL) ) | |
4355 | { | |
4356 | scbq_remove(&p->waiting_scbs, prev_scbp); | |
4357 | scb->flags = SCB_QUEUED_FOR_DONE | SCB_QUEUE_FULL; | |
4358 | p->activescbs++; | |
4359 | aic_dev->active_cmds++; | |
4360 | } | |
4361 | } | |
4362 | aic7xxx_search_qinfifo(p, target, channel, lun, | |
4363 | SCB_LIST_NULL, SCB_QUEUED_FOR_DONE | SCB_QUEUE_FULL, | |
4364 | FALSE, NULL); | |
4365 | next_scbp = NULL; | |
4366 | active_hscb = aic_inb(p, SCBPTR); | |
4367 | prev_hscb = next_hscb = scb_index = SCB_LIST_NULL; | |
4368 | next_hscb = aic_inb(p, WAITING_SCBH); | |
4369 | while (next_hscb != SCB_LIST_NULL) | |
4370 | { | |
4371 | aic_outb(p, next_hscb, SCBPTR); | |
4372 | scb_index = aic_inb(p, SCB_TAG); | |
4373 | if (scb_index < p->scb_data->numscbs) | |
4374 | { | |
4375 | next_scbp = p->scb_data->scb_array[scb_index]; | |
4376 | if (aic7xxx_match_scb(p, next_scbp, target, channel, lun, | |
4377 | SCB_LIST_NULL) ) | |
4378 | { | |
4379 | next_scbp->flags = SCB_QUEUED_FOR_DONE | SCB_QUEUE_FULL; | |
4380 | next_hscb = aic_inb(p, SCB_NEXT); | |
4381 | aic_outb(p, 0, SCB_CONTROL); | |
4382 | aic_outb(p, SCB_LIST_NULL, SCB_TAG); | |
4383 | aic7xxx_add_curscb_to_free_list(p); | |
4384 | if (prev_hscb == SCB_LIST_NULL) | |
4385 | { | |
4386 | /* We were first on the list, | |
4387 | * so we kill the selection | |
4388 | * hardware. Let the sequencer | |
4389 | * re-init the hardware itself | |
4390 | */ | |
4391 | aic_outb(p, aic_inb(p, SCSISEQ) & ~ENSELO, SCSISEQ); | |
4392 | aic_outb(p, CLRSELTIMEO, CLRSINT1); | |
4393 | aic_outb(p, next_hscb, WAITING_SCBH); | |
4394 | } | |
4395 | else | |
4396 | { | |
4397 | aic_outb(p, prev_hscb, SCBPTR); | |
4398 | aic_outb(p, next_hscb, SCB_NEXT); | |
4399 | } | |
4400 | } | |
4401 | else | |
4402 | { | |
4403 | prev_hscb = next_hscb; | |
4404 | next_hscb = aic_inb(p, SCB_NEXT); | |
4405 | } | |
4406 | } /* scb_index >= p->scb_data->numscbs */ | |
4407 | } | |
4408 | aic_outb(p, active_hscb, SCBPTR); | |
4409 | aic7xxx_run_done_queue(p, FALSE); | |
4410 | ||
4411 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
4412 | if( (aic7xxx_verbose & VERBOSE_MINOR_ERROR) || | |
4413 | (aic7xxx_verbose > 0xffff) ) | |
4414 | { | |
4415 | if (queue_flag) | |
4416 | printk(INFO_LEAD "Queue full received; queue depth %d, " | |
4417 | "active %d\n", p->host_no, CTL_OF_SCB(scb), | |
4418 | aic_dev->max_q_depth, aic_dev->active_cmds); | |
4419 | else | |
4420 | printk(INFO_LEAD "Target busy\n", p->host_no, CTL_OF_SCB(scb)); | |
4421 | } | |
4422 | #endif | |
4423 | if (queue_flag) | |
4424 | { | |
4425 | int diff; | |
4426 | result = scsi_track_queue_full(cmd->device, | |
4427 | aic_dev->active_cmds); | |
4428 | if ( result < 0 ) | |
4429 | { | |
4430 | if (aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
4431 | printk(INFO_LEAD "Tagged Command Queueing disabled.\n", | |
4432 | p->host_no, CTL_OF_SCB(scb)); | |
4433 | diff = aic_dev->max_q_depth - p->host->cmd_per_lun; | |
4434 | aic_dev->temp_q_depth = 1; | |
4435 | aic_dev->max_q_depth = 1; | |
4436 | } | |
4437 | else if ( result > 0 ) | |
4438 | { | |
4439 | if (aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
4440 | printk(INFO_LEAD "Queue depth reduced to %d\n", p->host_no, | |
4441 | CTL_OF_SCB(scb), result); | |
4442 | diff = aic_dev->max_q_depth - result; | |
4443 | aic_dev->max_q_depth = result; | |
4444 | /* temp_q_depth could have been dropped to 1 for an untagged | |
4445 | * command that might be coming up */ | |
4446 | if(aic_dev->temp_q_depth > result) | |
4447 | aic_dev->temp_q_depth = result; | |
4448 | } | |
4449 | /* We should free up the no unused SCB entries. But, that's | |
4450 | * a difficult thing to do because we use a direct indexed | |
4451 | * array, so we can't just take any entries and free them, | |
4452 | * we *have* to free the ones at the end of the array, and | |
4453 | * they very well could be in use right now, which means | |
4454 | * in order to do this right, we have to add a delayed | |
4455 | * freeing mechanism tied into the scb_free() code area. | |
4456 | * We'll add that later. | |
4457 | */ | |
4458 | } | |
4459 | break; | |
4460 | } | |
4461 | ||
4462 | default: | |
4463 | if (aic7xxx_verbose & VERBOSE_SEQINT) | |
4464 | printk(INFO_LEAD "Unexpected target status 0x%x.\n", p->host_no, | |
4465 | CTL_OF_SCB(scb), scb->hscb->target_status); | |
4466 | if (!aic7xxx_error(cmd)) | |
4467 | { | |
4468 | aic7xxx_error(cmd) = DID_RETRY_COMMAND; | |
4469 | } | |
4470 | break; | |
4471 | } /* end switch */ | |
4472 | } /* end else of */ | |
4473 | } | |
4474 | break; | |
4475 | ||
4476 | case AWAITING_MSG: | |
4477 | { | |
4478 | unsigned char scb_index, msg_out; | |
4479 | ||
4480 | scb_index = aic_inb(p, SCB_TAG); | |
4481 | msg_out = aic_inb(p, MSG_OUT); | |
4482 | scb = p->scb_data->scb_array[scb_index]; | |
4483 | aic_dev = AIC_DEV(scb->cmd); | |
4484 | p->msg_index = p->msg_len = 0; | |
4485 | /* | |
4486 | * This SCB had a MK_MESSAGE set in its control byte informing | |
4487 | * the sequencer that we wanted to send a special message to | |
4488 | * this target. | |
4489 | */ | |
4490 | ||
4491 | if ( !(scb->flags & SCB_DEVICE_RESET) && | |
4492 | (msg_out == MSG_IDENTIFYFLAG) && | |
4493 | (scb->hscb->control & TAG_ENB) ) | |
4494 | { | |
4495 | p->msg_buf[p->msg_index++] = scb->tag_action; | |
4496 | p->msg_buf[p->msg_index++] = scb->hscb->tag; | |
4497 | p->msg_len += 2; | |
4498 | } | |
4499 | ||
4500 | if (scb->flags & SCB_DEVICE_RESET) | |
4501 | { | |
4502 | p->msg_buf[p->msg_index++] = MSG_BUS_DEV_RESET; | |
4503 | p->msg_len++; | |
4504 | if (aic7xxx_verbose & VERBOSE_RESET_PROCESS) | |
4505 | printk(INFO_LEAD "Bus device reset mailed.\n", | |
4506 | p->host_no, CTL_OF_SCB(scb)); | |
4507 | } | |
4508 | else if (scb->flags & SCB_ABORT) | |
4509 | { | |
4510 | if (scb->tag_action) | |
4511 | { | |
4512 | p->msg_buf[p->msg_index++] = MSG_ABORT_TAG; | |
4513 | } | |
4514 | else | |
4515 | { | |
4516 | p->msg_buf[p->msg_index++] = MSG_ABORT; | |
4517 | } | |
4518 | p->msg_len++; | |
4519 | if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS) | |
4520 | printk(INFO_LEAD "Abort message mailed.\n", p->host_no, | |
4521 | CTL_OF_SCB(scb)); | |
4522 | } | |
4523 | else if (scb->flags & SCB_MSGOUT_PPR) | |
4524 | { | |
4525 | if (aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
4526 | { | |
4527 | printk(INFO_LEAD "Sending PPR (%d/%d/%d/%d) message.\n", | |
4528 | p->host_no, CTL_OF_SCB(scb), | |
4529 | aic_dev->goal.period, | |
4530 | aic_dev->goal.offset, | |
4531 | aic_dev->goal.width, | |
4532 | aic_dev->goal.options); | |
4533 | } | |
4534 | aic7xxx_construct_ppr(p, scb); | |
4535 | } | |
4536 | else if (scb->flags & SCB_MSGOUT_WDTR) | |
4537 | { | |
4538 | if (aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
4539 | { | |
4540 | printk(INFO_LEAD "Sending WDTR message.\n", p->host_no, | |
4541 | CTL_OF_SCB(scb)); | |
4542 | } | |
4543 | aic7xxx_construct_wdtr(p, aic_dev->goal.width); | |
4544 | } | |
4545 | else if (scb->flags & SCB_MSGOUT_SDTR) | |
4546 | { | |
4547 | unsigned int max_sync, period; | |
4548 | unsigned char options = 0; | |
4549 | /* | |
4550 | * Now that the device is selected, use the bits in SBLKCTL and | |
4551 | * SSTAT2 to determine the max sync rate for this device. | |
4552 | */ | |
4553 | if (p->features & AHC_ULTRA2) | |
4554 | { | |
4555 | if ( (aic_inb(p, SBLKCTL) & ENAB40) && | |
4556 | !(aic_inb(p, SSTAT2) & EXP_ACTIVE) ) | |
4557 | { | |
4558 | max_sync = AHC_SYNCRATE_ULTRA2; | |
4559 | } | |
4560 | else | |
4561 | { | |
4562 | max_sync = AHC_SYNCRATE_ULTRA; | |
4563 | } | |
4564 | } | |
4565 | else if (p->features & AHC_ULTRA) | |
4566 | { | |
4567 | max_sync = AHC_SYNCRATE_ULTRA; | |
4568 | } | |
4569 | else | |
4570 | { | |
4571 | max_sync = AHC_SYNCRATE_FAST; | |
4572 | } | |
4573 | period = aic_dev->goal.period; | |
4574 | aic7xxx_find_syncrate(p, &period, max_sync, &options); | |
4575 | if (aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
4576 | { | |
4577 | printk(INFO_LEAD "Sending SDTR %d/%d message.\n", p->host_no, | |
4578 | CTL_OF_SCB(scb), period, | |
4579 | aic_dev->goal.offset); | |
4580 | } | |
4581 | aic7xxx_construct_sdtr(p, period, aic_dev->goal.offset); | |
4582 | } | |
4583 | else | |
4584 | { | |
4585 | panic("aic7xxx: AWAITING_MSG for an SCB that does " | |
4586 | "not have a waiting message.\n"); | |
4587 | } | |
4588 | /* | |
4589 | * We've set everything up to send our message, now to actually do | |
4590 | * so we need to enable reqinit interrupts and let the interrupt | |
4591 | * handler do the rest. We don't want to unpause the sequencer yet | |
4592 | * though so we'll return early. We also have to make sure that | |
4593 | * we clear the SEQINT *BEFORE* we set the REQINIT handler active | |
4594 | * or else it's possible on VLB cards to lose the first REQINIT | |
4595 | * interrupt. Edge triggered EISA cards could also lose this | |
4596 | * interrupt, although PCI and level triggered cards should not | |
4597 | * have this problem since they continually interrupt the kernel | |
4598 | * until we take care of the situation. | |
4599 | */ | |
4600 | scb->flags |= SCB_MSGOUT_SENT; | |
4601 | p->msg_index = 0; | |
4602 | p->msg_type = MSG_TYPE_INITIATOR_MSGOUT; | |
4603 | p->flags |= AHC_HANDLING_REQINITS; | |
4604 | aic_outb(p, aic_inb(p, SIMODE1) | ENREQINIT, SIMODE1); | |
4605 | return; | |
4606 | } | |
4607 | break; | |
4608 | ||
4609 | case DATA_OVERRUN: | |
4610 | { | |
4611 | unsigned char scb_index = aic_inb(p, SCB_TAG); | |
4612 | unsigned char lastphase = aic_inb(p, LASTPHASE); | |
4613 | unsigned int i; | |
4614 | ||
4615 | scb = (p->scb_data->scb_array[scb_index]); | |
4616 | /* | |
4617 | * XXX - What do we really want to do on an overrun? The | |
4618 | * mid-level SCSI code should handle this, but for now, | |
4619 | * we'll just indicate that the command should retried. | |
4620 | * If we retrieved sense info on this target, then the | |
4621 | * base SENSE info should have been saved prior to the | |
4622 | * overrun error. In that case, we return DID_OK and let | |
4623 | * the mid level code pick up on the sense info. Otherwise | |
4624 | * we return DID_ERROR so the command will get retried. | |
4625 | */ | |
4626 | if ( !(scb->flags & SCB_SENSE) ) | |
4627 | { | |
4628 | printk(WARN_LEAD "Data overrun detected in %s phase, tag %d;\n", | |
4629 | p->host_no, CTL_OF_SCB(scb), | |
4630 | (lastphase == P_DATAIN) ? "Data-In" : "Data-Out", scb->hscb->tag); | |
4631 | printk(KERN_WARNING " %s seen Data Phase. Length=%d, NumSGs=%d.\n", | |
4632 | (aic_inb(p, SEQ_FLAGS) & DPHASE) ? "Have" : "Haven't", | |
4633 | scb->sg_length, scb->sg_count); | |
4634 | printk(KERN_WARNING " Raw SCSI Command: 0x"); | |
4635 | for (i = 0; i < scb->hscb->SCSI_cmd_length; i++) | |
4636 | { | |
4637 | printk("%02x ", scb->cmd->cmnd[i]); | |
4638 | } | |
4639 | printk("\n"); | |
4640 | if(aic7xxx_verbose > 0xffff) | |
4641 | { | |
4642 | for (i = 0; i < scb->sg_count; i++) | |
4643 | { | |
4644 | printk(KERN_WARNING " sg[%d] - Addr 0x%x : Length %d\n", | |
4645 | i, | |
4646 | le32_to_cpu(scb->sg_list[i].address), | |
4647 | le32_to_cpu(scb->sg_list[i].length) ); | |
4648 | } | |
4649 | } | |
4650 | aic7xxx_error(scb->cmd) = DID_ERROR; | |
4651 | } | |
4652 | else | |
4653 | printk(INFO_LEAD "Data Overrun during SEND_SENSE operation.\n", | |
4654 | p->host_no, CTL_OF_SCB(scb)); | |
4655 | } | |
4656 | break; | |
4657 | ||
4658 | case WIDE_RESIDUE: | |
4659 | { | |
4660 | unsigned char resid_sgcnt, index; | |
4661 | unsigned char scb_index = aic_inb(p, SCB_TAG); | |
4662 | unsigned int cur_addr, resid_dcnt; | |
4663 | unsigned int native_addr, native_length, sg_addr; | |
4664 | int i; | |
4665 | ||
4666 | if(scb_index > p->scb_data->numscbs) | |
4667 | { | |
4668 | printk(WARN_LEAD "invalid scb_index during WIDE_RESIDUE.\n", | |
4669 | p->host_no, -1, -1, -1); | |
4670 | /* | |
4671 | * XXX: Add error handling here | |
4672 | */ | |
4673 | break; | |
4674 | } | |
4675 | scb = p->scb_data->scb_array[scb_index]; | |
4676 | if(!(scb->flags & SCB_ACTIVE) || (scb->cmd == NULL)) | |
4677 | { | |
4678 | printk(WARN_LEAD "invalid scb during WIDE_RESIDUE flags:0x%x " | |
4679 | "scb->cmd:0x%lx\n", p->host_no, CTL_OF_SCB(scb), | |
4680 | scb->flags, (unsigned long)scb->cmd); | |
4681 | break; | |
4682 | } | |
4683 | if(aic7xxx_verbose & VERBOSE_MINOR_ERROR) | |
4684 | printk(INFO_LEAD "Got WIDE_RESIDUE message, patching up data " | |
4685 | "pointer.\n", p->host_no, CTL_OF_SCB(scb)); | |
4686 | ||
4687 | /* | |
4688 | * We have a valid scb to use on this WIDE_RESIDUE message, so | |
4689 | * we need to walk the sg list looking for this particular sg | |
4690 | * segment, then see if we happen to be at the very beginning of | |
4691 | * the segment. If we are, then we have to back things up to | |
4692 | * the previous segment. If not, then we simply need to remove | |
4693 | * one byte from this segments address and add one to the byte | |
4694 | * count. | |
4695 | */ | |
4696 | cur_addr = aic_inb(p, SHADDR) | (aic_inb(p, SHADDR + 1) << 8) | | |
4697 | (aic_inb(p, SHADDR + 2) << 16) | (aic_inb(p, SHADDR + 3) << 24); | |
4698 | sg_addr = aic_inb(p, SG_COUNT + 1) | (aic_inb(p, SG_COUNT + 2) << 8) | | |
4699 | (aic_inb(p, SG_COUNT + 3) << 16) | (aic_inb(p, SG_COUNT + 4) << 24); | |
4700 | resid_sgcnt = aic_inb(p, SCB_RESID_SGCNT); | |
4701 | resid_dcnt = aic_inb(p, SCB_RESID_DCNT) | | |
4702 | (aic_inb(p, SCB_RESID_DCNT + 1) << 8) | | |
4703 | (aic_inb(p, SCB_RESID_DCNT + 2) << 16); | |
4704 | index = scb->sg_count - ((resid_sgcnt) ? resid_sgcnt : 1); | |
4705 | native_addr = le32_to_cpu(scb->sg_list[index].address); | |
4706 | native_length = le32_to_cpu(scb->sg_list[index].length); | |
4707 | /* | |
4708 | * If resid_dcnt == native_length, then we just loaded this SG | |
4709 | * segment and we need to back it up one... | |
4710 | */ | |
4711 | if(resid_dcnt == native_length) | |
4712 | { | |
4713 | if(index == 0) | |
4714 | { | |
4715 | /* | |
4716 | * Oops, this isn't right, we can't back up to before the | |
4717 | * beginning. This must be a bogus message, ignore it. | |
4718 | */ | |
4719 | break; | |
4720 | } | |
4721 | resid_dcnt = 1; | |
4722 | resid_sgcnt += 1; | |
4723 | native_addr = le32_to_cpu(scb->sg_list[index - 1].address); | |
4724 | native_length = le32_to_cpu(scb->sg_list[index - 1].length); | |
4725 | cur_addr = native_addr + (native_length - 1); | |
4726 | sg_addr -= sizeof(struct hw_scatterlist); | |
4727 | } | |
4728 | else | |
4729 | { | |
4730 | /* | |
4731 | * resid_dcnt != native_length, so we are in the middle of a SG | |
4732 | * element. Back it up one byte and leave the rest alone. | |
4733 | */ | |
4734 | resid_dcnt += 1; | |
4735 | cur_addr -= 1; | |
4736 | } | |
4737 | ||
4738 | /* | |
4739 | * Output the new addresses and counts to the right places on the | |
4740 | * card. | |
4741 | */ | |
4742 | aic_outb(p, resid_sgcnt, SG_COUNT); | |
4743 | aic_outb(p, resid_sgcnt, SCB_RESID_SGCNT); | |
4744 | aic_outb(p, sg_addr & 0xff, SG_COUNT + 1); | |
4745 | aic_outb(p, (sg_addr >> 8) & 0xff, SG_COUNT + 2); | |
4746 | aic_outb(p, (sg_addr >> 16) & 0xff, SG_COUNT + 3); | |
4747 | aic_outb(p, (sg_addr >> 24) & 0xff, SG_COUNT + 4); | |
4748 | aic_outb(p, resid_dcnt & 0xff, SCB_RESID_DCNT); | |
4749 | aic_outb(p, (resid_dcnt >> 8) & 0xff, SCB_RESID_DCNT + 1); | |
4750 | aic_outb(p, (resid_dcnt >> 16) & 0xff, SCB_RESID_DCNT + 2); | |
4751 | ||
4752 | /* | |
4753 | * The sequencer actually wants to find the new address | |
4754 | * in the SHADDR register set. On the Ultra2 and later controllers | |
4755 | * this register set is readonly. In order to get the right number | |
4756 | * into the register, you actually have to enter it in HADDR and then | |
4757 | * use the PRELOADEN bit of DFCNTRL to drop it through from the | |
4758 | * HADDR register to the SHADDR register. On non-Ultra2 controllers, | |
4759 | * we simply write it direct. | |
4760 | */ | |
4761 | if(p->features & AHC_ULTRA2) | |
4762 | { | |
4763 | /* | |
4764 | * We might as well be accurate and drop both the resid_dcnt and | |
4765 | * cur_addr into HCNT and HADDR and have both of them drop | |
4766 | * through to the shadow layer together. | |
4767 | */ | |
4768 | aic_outb(p, resid_dcnt & 0xff, HCNT); | |
4769 | aic_outb(p, (resid_dcnt >> 8) & 0xff, HCNT + 1); | |
4770 | aic_outb(p, (resid_dcnt >> 16) & 0xff, HCNT + 2); | |
4771 | aic_outb(p, cur_addr & 0xff, HADDR); | |
4772 | aic_outb(p, (cur_addr >> 8) & 0xff, HADDR + 1); | |
4773 | aic_outb(p, (cur_addr >> 16) & 0xff, HADDR + 2); | |
4774 | aic_outb(p, (cur_addr >> 24) & 0xff, HADDR + 3); | |
4775 | aic_outb(p, aic_inb(p, DMAPARAMS) | PRELOADEN, DFCNTRL); | |
4776 | udelay(1); | |
4777 | aic_outb(p, aic_inb(p, DMAPARAMS) & ~(SCSIEN|HDMAEN), DFCNTRL); | |
4778 | i=0; | |
4779 | while(((aic_inb(p, DFCNTRL) & (SCSIEN|HDMAEN)) != 0) && (i++ < 1000)) | |
4780 | { | |
4781 | udelay(1); | |
4782 | } | |
4783 | } | |
4784 | else | |
4785 | { | |
4786 | aic_outb(p, cur_addr & 0xff, SHADDR); | |
4787 | aic_outb(p, (cur_addr >> 8) & 0xff, SHADDR + 1); | |
4788 | aic_outb(p, (cur_addr >> 16) & 0xff, SHADDR + 2); | |
4789 | aic_outb(p, (cur_addr >> 24) & 0xff, SHADDR + 3); | |
4790 | } | |
4791 | } | |
4792 | break; | |
4793 | ||
4794 | case SEQ_SG_FIXUP: | |
4795 | { | |
4796 | unsigned char scb_index, tmp; | |
4797 | int sg_addr, sg_length; | |
4798 | ||
4799 | scb_index = aic_inb(p, SCB_TAG); | |
4800 | ||
4801 | if(scb_index > p->scb_data->numscbs) | |
4802 | { | |
4803 | printk(WARN_LEAD "invalid scb_index during SEQ_SG_FIXUP.\n", | |
4804 | p->host_no, -1, -1, -1); | |
4805 | printk(INFO_LEAD "SCSISIGI 0x%x, SEQADDR 0x%x, SSTAT0 0x%x, SSTAT1 " | |
4806 | "0x%x\n", p->host_no, -1, -1, -1, | |
4807 | aic_inb(p, SCSISIGI), | |
4808 | aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8), | |
4809 | aic_inb(p, SSTAT0), aic_inb(p, SSTAT1)); | |
4810 | printk(INFO_LEAD "SG_CACHEPTR 0x%x, SSTAT2 0x%x, STCNT 0x%x\n", | |
4811 | p->host_no, -1, -1, -1, aic_inb(p, SG_CACHEPTR), | |
4812 | aic_inb(p, SSTAT2), aic_inb(p, STCNT + 2) << 16 | | |
4813 | aic_inb(p, STCNT + 1) << 8 | aic_inb(p, STCNT)); | |
4814 | /* | |
4815 | * XXX: Add error handling here | |
4816 | */ | |
4817 | break; | |
4818 | } | |
4819 | scb = p->scb_data->scb_array[scb_index]; | |
4820 | if(!(scb->flags & SCB_ACTIVE) || (scb->cmd == NULL)) | |
4821 | { | |
4822 | printk(WARN_LEAD "invalid scb during SEQ_SG_FIXUP flags:0x%x " | |
4823 | "scb->cmd:0x%p\n", p->host_no, CTL_OF_SCB(scb), | |
4824 | scb->flags, scb->cmd); | |
4825 | printk(INFO_LEAD "SCSISIGI 0x%x, SEQADDR 0x%x, SSTAT0 0x%x, SSTAT1 " | |
4826 | "0x%x\n", p->host_no, CTL_OF_SCB(scb), | |
4827 | aic_inb(p, SCSISIGI), | |
4828 | aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8), | |
4829 | aic_inb(p, SSTAT0), aic_inb(p, SSTAT1)); | |
4830 | printk(INFO_LEAD "SG_CACHEPTR 0x%x, SSTAT2 0x%x, STCNT 0x%x\n", | |
4831 | p->host_no, CTL_OF_SCB(scb), aic_inb(p, SG_CACHEPTR), | |
4832 | aic_inb(p, SSTAT2), aic_inb(p, STCNT + 2) << 16 | | |
4833 | aic_inb(p, STCNT + 1) << 8 | aic_inb(p, STCNT)); | |
4834 | break; | |
4835 | } | |
4836 | if(aic7xxx_verbose & VERBOSE_MINOR_ERROR) | |
4837 | printk(INFO_LEAD "Fixing up SG address for sequencer.\n", p->host_no, | |
4838 | CTL_OF_SCB(scb)); | |
4839 | /* | |
4840 | * Advance the SG pointer to the next element in the list | |
4841 | */ | |
4842 | tmp = aic_inb(p, SG_NEXT); | |
4843 | tmp += SG_SIZEOF; | |
4844 | aic_outb(p, tmp, SG_NEXT); | |
4845 | if( tmp < SG_SIZEOF ) | |
4846 | aic_outb(p, aic_inb(p, SG_NEXT + 1) + 1, SG_NEXT + 1); | |
4847 | tmp = aic_inb(p, SG_COUNT) - 1; | |
4848 | aic_outb(p, tmp, SG_COUNT); | |
4849 | sg_addr = le32_to_cpu(scb->sg_list[scb->sg_count - tmp].address); | |
4850 | sg_length = le32_to_cpu(scb->sg_list[scb->sg_count - tmp].length); | |
4851 | /* | |
4852 | * Now stuff the element we just advanced past down onto the | |
4853 | * card so it can be stored in the residual area. | |
4854 | */ | |
4855 | aic_outb(p, sg_addr & 0xff, HADDR); | |
4856 | aic_outb(p, (sg_addr >> 8) & 0xff, HADDR + 1); | |
4857 | aic_outb(p, (sg_addr >> 16) & 0xff, HADDR + 2); | |
4858 | aic_outb(p, (sg_addr >> 24) & 0xff, HADDR + 3); | |
4859 | aic_outb(p, sg_length & 0xff, HCNT); | |
4860 | aic_outb(p, (sg_length >> 8) & 0xff, HCNT + 1); | |
4861 | aic_outb(p, (sg_length >> 16) & 0xff, HCNT + 2); | |
4862 | aic_outb(p, (tmp << 2) | ((tmp == 1) ? LAST_SEG : 0), SG_CACHEPTR); | |
4863 | aic_outb(p, aic_inb(p, DMAPARAMS), DFCNTRL); | |
4864 | while(aic_inb(p, SSTAT0) & SDONE) udelay(1); | |
4865 | while(aic_inb(p, DFCNTRL) & (HDMAEN|SCSIEN)) aic_outb(p, 0, DFCNTRL); | |
4866 | } | |
4867 | break; | |
4868 | ||
4869 | #ifdef AIC7XXX_NOT_YET | |
4870 | case TRACEPOINT2: | |
4871 | { | |
4872 | printk(INFO_LEAD "Tracepoint #2 reached.\n", p->host_no, | |
4873 | channel, target, lun); | |
4874 | } | |
4875 | break; | |
4876 | ||
4877 | /* XXX Fill these in later */ | |
4878 | case MSG_BUFFER_BUSY: | |
4879 | printk("aic7xxx: Message buffer busy.\n"); | |
4880 | break; | |
4881 | case MSGIN_PHASEMIS: | |
4882 | printk("aic7xxx: Message-in phasemis.\n"); | |
4883 | break; | |
4884 | #endif | |
4885 | ||
4886 | default: /* unknown */ | |
4887 | printk(WARN_LEAD "Unknown SEQINT, INTSTAT 0x%x, SCSISIGI 0x%x.\n", | |
4888 | p->host_no, channel, target, lun, intstat, | |
4889 | aic_inb(p, SCSISIGI)); | |
4890 | break; | |
4891 | } | |
4892 | ||
4893 | /* | |
4894 | * Clear the sequencer interrupt and unpause the sequencer. | |
4895 | */ | |
4896 | unpause_sequencer(p, /* unpause always */ TRUE); | |
4897 | } | |
4898 | ||
4899 | /*+F************************************************************************* | |
4900 | * Function: | |
4901 | * aic7xxx_parse_msg | |
4902 | * | |
4903 | * Description: | |
4904 | * Parses incoming messages into actions on behalf of | |
4905 | * aic7xxx_handle_reqinit | |
4906 | *_F*************************************************************************/ | |
4907 | static int | |
4908 | aic7xxx_parse_msg(struct aic7xxx_host *p, struct aic7xxx_scb *scb) | |
4909 | { | |
4910 | int reject, reply, done; | |
4911 | unsigned char target_scsirate, tindex; | |
4912 | unsigned short target_mask; | |
4913 | unsigned char target, channel, lun; | |
4914 | unsigned char bus_width, new_bus_width; | |
4915 | unsigned char trans_options, new_trans_options; | |
4916 | unsigned int period, new_period, offset, new_offset, maxsync; | |
4917 | struct aic7xxx_syncrate *syncrate; | |
4918 | struct aic_dev_data *aic_dev; | |
4919 | ||
4920 | target = scb->cmd->device->id; | |
4921 | channel = scb->cmd->device->channel; | |
4922 | lun = scb->cmd->device->lun; | |
4923 | reply = reject = done = FALSE; | |
4924 | tindex = TARGET_INDEX(scb->cmd); | |
4925 | aic_dev = AIC_DEV(scb->cmd); | |
4926 | target_scsirate = aic_inb(p, TARG_SCSIRATE + tindex); | |
4927 | target_mask = (0x01 << tindex); | |
4928 | ||
4929 | /* | |
4930 | * Parse as much of the message as is available, | |
4931 | * rejecting it if we don't support it. When | |
4932 | * the entire message is available and has been | |
4933 | * handled, return TRUE indicating that we have | |
4934 | * parsed an entire message. | |
4935 | */ | |
4936 | ||
4937 | if (p->msg_buf[0] != MSG_EXTENDED) | |
4938 | { | |
4939 | reject = TRUE; | |
4940 | } | |
4941 | ||
4942 | /* | |
4943 | * Even if we are an Ultra3 card, don't allow Ultra3 sync rates when | |
4944 | * using the SDTR messages. We need the PPR messages to enable the | |
4945 | * higher speeds that include things like Dual Edge clocking. | |
4946 | */ | |
4947 | if (p->features & AHC_ULTRA2) | |
4948 | { | |
4949 | if ( (aic_inb(p, SBLKCTL) & ENAB40) && | |
4950 | !(aic_inb(p, SSTAT2) & EXP_ACTIVE) ) | |
4951 | { | |
4952 | if (p->features & AHC_ULTRA3) | |
4953 | maxsync = AHC_SYNCRATE_ULTRA3; | |
4954 | else | |
4955 | maxsync = AHC_SYNCRATE_ULTRA2; | |
4956 | } | |
4957 | else | |
4958 | { | |
4959 | maxsync = AHC_SYNCRATE_ULTRA; | |
4960 | } | |
4961 | } | |
4962 | else if (p->features & AHC_ULTRA) | |
4963 | { | |
4964 | maxsync = AHC_SYNCRATE_ULTRA; | |
4965 | } | |
4966 | else | |
4967 | { | |
4968 | maxsync = AHC_SYNCRATE_FAST; | |
4969 | } | |
4970 | ||
4971 | /* | |
4972 | * Just accept the length byte outright and perform | |
4973 | * more checking once we know the message type. | |
4974 | */ | |
4975 | ||
4976 | if ( !reject && (p->msg_len > 2) ) | |
4977 | { | |
4978 | switch(p->msg_buf[2]) | |
4979 | { | |
4980 | case MSG_EXT_SDTR: | |
4981 | { | |
4982 | ||
4983 | if (p->msg_buf[1] != MSG_EXT_SDTR_LEN) | |
4984 | { | |
4985 | reject = TRUE; | |
4986 | break; | |
4987 | } | |
4988 | ||
4989 | if (p->msg_len < (MSG_EXT_SDTR_LEN + 2)) | |
4990 | { | |
4991 | break; | |
4992 | } | |
4993 | ||
4994 | period = new_period = p->msg_buf[3]; | |
4995 | offset = new_offset = p->msg_buf[4]; | |
4996 | trans_options = new_trans_options = 0; | |
4997 | bus_width = new_bus_width = target_scsirate & WIDEXFER; | |
4998 | ||
4999 | /* | |
5000 | * If our current max syncrate is in the Ultra3 range, bump it back | |
5001 | * down to Ultra2 since we can't negotiate DT transfers using SDTR | |
5002 | */ | |
5003 | if(maxsync == AHC_SYNCRATE_ULTRA3) | |
5004 | maxsync = AHC_SYNCRATE_ULTRA2; | |
5005 | ||
5006 | /* | |
5007 | * We might have a device that is starting negotiation with us | |
5008 | * before we can start up negotiation with it....be prepared to | |
5009 | * have a device ask for a higher speed then we want to give it | |
5010 | * in that case | |
5011 | */ | |
5012 | if ( (scb->flags & (SCB_MSGOUT_SENT|SCB_MSGOUT_SDTR)) != | |
5013 | (SCB_MSGOUT_SENT|SCB_MSGOUT_SDTR) ) | |
5014 | { | |
5015 | if (!(aic_dev->flags & DEVICE_DTR_SCANNED)) | |
5016 | { | |
5017 | /* | |
5018 | * We shouldn't get here unless this is a narrow drive, wide | |
5019 | * devices should trigger this same section of code in the WDTR | |
5020 | * handler first instead. | |
5021 | */ | |
5022 | aic_dev->goal.width = MSG_EXT_WDTR_BUS_8_BIT; | |
5023 | aic_dev->goal.options = 0; | |
5024 | if(p->user[tindex].offset) | |
5025 | { | |
5026 | aic_dev->needsdtr_copy = 1; | |
5027 | aic_dev->goal.period = max_t(unsigned char, 10,p->user[tindex].period); | |
5028 | if(p->features & AHC_ULTRA2) | |
5029 | { | |
5030 | aic_dev->goal.offset = MAX_OFFSET_ULTRA2; | |
5031 | } | |
5032 | else | |
5033 | { | |
5034 | aic_dev->goal.offset = MAX_OFFSET_8BIT; | |
5035 | } | |
5036 | } | |
5037 | else | |
5038 | { | |
5039 | aic_dev->needsdtr_copy = 0; | |
5040 | aic_dev->goal.period = 255; | |
5041 | aic_dev->goal.offset = 0; | |
5042 | } | |
5043 | aic_dev->flags |= DEVICE_DTR_SCANNED | DEVICE_PRINT_DTR; | |
5044 | } | |
5045 | else if (aic_dev->needsdtr_copy == 0) | |
5046 | { | |
5047 | /* | |
5048 | * This is a preemptive message from the target, we've already | |
5049 | * scanned this target and set our options for it, and we | |
5050 | * don't need a SDTR with this target (for whatever reason), | |
5051 | * so reject this incoming SDTR | |
5052 | */ | |
5053 | reject = TRUE; | |
5054 | break; | |
5055 | } | |
5056 | ||
5057 | /* The device is sending this message first and we have to reply */ | |
5058 | reply = TRUE; | |
5059 | ||
5060 | if (aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
5061 | { | |
5062 | printk(INFO_LEAD "Received pre-emptive SDTR message from " | |
5063 | "target.\n", p->host_no, CTL_OF_SCB(scb)); | |
5064 | } | |
5065 | /* | |
5066 | * Validate the values the device passed to us against our SEEPROM | |
5067 | * settings. We don't have to do this if we aren't replying since | |
5068 | * the device isn't allowed to send values greater than the ones | |
5069 | * we first sent to it. | |
5070 | */ | |
5071 | new_period = max_t(unsigned int, period, aic_dev->goal.period); | |
5072 | new_offset = min_t(unsigned int, offset, aic_dev->goal.offset); | |
5073 | } | |
5074 | ||
5075 | /* | |
5076 | * Use our new_period, new_offset, bus_width, and card options | |
5077 | * to determine the actual syncrate settings | |
5078 | */ | |
5079 | syncrate = aic7xxx_find_syncrate(p, &new_period, maxsync, | |
5080 | &trans_options); | |
5081 | aic7xxx_validate_offset(p, syncrate, &new_offset, bus_width); | |
5082 | ||
5083 | /* | |
5084 | * Did we drop to async? If so, send a reply regardless of whether | |
5085 | * or not we initiated this negotiation. | |
5086 | */ | |
5087 | if ((new_offset == 0) && (new_offset != offset)) | |
5088 | { | |
5089 | aic_dev->needsdtr_copy = 0; | |
5090 | reply = TRUE; | |
5091 | } | |
5092 | ||
5093 | /* | |
5094 | * Did we start this, if not, or if we went too low and had to | |
5095 | * go async, then send an SDTR back to the target | |
5096 | */ | |
5097 | if(reply) | |
5098 | { | |
5099 | /* when sending a reply, make sure that the goal settings are | |
5100 | * updated along with current and active since the code that | |
5101 | * will actually build the message for the sequencer uses the | |
5102 | * goal settings as its guidelines. | |
5103 | */ | |
5104 | aic7xxx_set_syncrate(p, syncrate, target, channel, new_period, | |
5105 | new_offset, trans_options, | |
5106 | AHC_TRANS_GOAL|AHC_TRANS_ACTIVE|AHC_TRANS_CUR, | |
5107 | aic_dev); | |
5108 | scb->flags &= ~SCB_MSGOUT_BITS; | |
5109 | scb->flags |= SCB_MSGOUT_SDTR; | |
5110 | aic_outb(p, HOST_MSG, MSG_OUT); | |
5111 | aic_outb(p, aic_inb(p, SCSISIGO) | ATNO, SCSISIGO); | |
5112 | } | |
5113 | else | |
5114 | { | |
5115 | aic7xxx_set_syncrate(p, syncrate, target, channel, new_period, | |
5116 | new_offset, trans_options, | |
5117 | AHC_TRANS_ACTIVE|AHC_TRANS_CUR, aic_dev); | |
5118 | aic_dev->needsdtr = 0; | |
5119 | } | |
5120 | done = TRUE; | |
5121 | break; | |
5122 | } | |
5123 | case MSG_EXT_WDTR: | |
5124 | { | |
5125 | ||
5126 | if (p->msg_buf[1] != MSG_EXT_WDTR_LEN) | |
5127 | { | |
5128 | reject = TRUE; | |
5129 | break; | |
5130 | } | |
5131 | ||
5132 | if (p->msg_len < (MSG_EXT_WDTR_LEN + 2)) | |
5133 | { | |
5134 | break; | |
5135 | } | |
5136 | ||
5137 | bus_width = new_bus_width = p->msg_buf[3]; | |
5138 | ||
5139 | if ( (scb->flags & (SCB_MSGOUT_SENT|SCB_MSGOUT_WDTR)) == | |
5140 | (SCB_MSGOUT_SENT|SCB_MSGOUT_WDTR) ) | |
5141 | { | |
5142 | switch(bus_width) | |
5143 | { | |
5144 | default: | |
5145 | { | |
5146 | reject = TRUE; | |
5147 | if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) && | |
5148 | ((aic_dev->flags & DEVICE_PRINT_DTR) || | |
5149 | (aic7xxx_verbose > 0xffff)) ) | |
5150 | { | |
5151 | printk(INFO_LEAD "Requesting %d bit transfers, rejecting.\n", | |
5152 | p->host_no, CTL_OF_SCB(scb), 8 * (0x01 << bus_width)); | |
5153 | } | |
5154 | } /* We fall through on purpose */ | |
5155 | case MSG_EXT_WDTR_BUS_8_BIT: | |
5156 | { | |
5157 | aic_dev->goal.width = MSG_EXT_WDTR_BUS_8_BIT; | |
5158 | aic_dev->needwdtr_copy &= ~target_mask; | |
5159 | break; | |
5160 | } | |
5161 | case MSG_EXT_WDTR_BUS_16_BIT: | |
5162 | { | |
5163 | break; | |
5164 | } | |
5165 | } | |
5166 | aic_dev->needwdtr = 0; | |
5167 | aic7xxx_set_width(p, target, channel, lun, new_bus_width, | |
5168 | AHC_TRANS_ACTIVE|AHC_TRANS_CUR, aic_dev); | |
5169 | } | |
5170 | else | |
5171 | { | |
5172 | if ( !(aic_dev->flags & DEVICE_DTR_SCANNED) ) | |
5173 | { | |
5174 | /* | |
5175 | * Well, we now know the WDTR and SYNC caps of this device since | |
5176 | * it contacted us first, mark it as such and copy the user stuff | |
5177 | * over to the goal stuff. | |
5178 | */ | |
5179 | if( (p->features & AHC_WIDE) && p->user[tindex].width ) | |
5180 | { | |
5181 | aic_dev->goal.width = MSG_EXT_WDTR_BUS_16_BIT; | |
5182 | aic_dev->needwdtr_copy = 1; | |
5183 | } | |
5184 | ||
5185 | /* | |
5186 | * Devices that support DT transfers don't start WDTR requests | |
5187 | */ | |
5188 | aic_dev->goal.options = 0; | |
5189 | ||
5190 | if(p->user[tindex].offset) | |
5191 | { | |
5192 | aic_dev->needsdtr_copy = 1; | |
5193 | aic_dev->goal.period = max_t(unsigned char, 10, p->user[tindex].period); | |
5194 | if(p->features & AHC_ULTRA2) | |
5195 | { | |
5196 | aic_dev->goal.offset = MAX_OFFSET_ULTRA2; | |
5197 | } | |
5198 | else if( aic_dev->goal.width ) | |
5199 | { | |
5200 | aic_dev->goal.offset = MAX_OFFSET_16BIT; | |
5201 | } | |
5202 | else | |
5203 | { | |
5204 | aic_dev->goal.offset = MAX_OFFSET_8BIT; | |
5205 | } | |
5206 | } else { | |
5207 | aic_dev->needsdtr_copy = 0; | |
5208 | aic_dev->goal.period = 255; | |
5209 | aic_dev->goal.offset = 0; | |
5210 | } | |
5211 | ||
5212 | aic_dev->flags |= DEVICE_DTR_SCANNED | DEVICE_PRINT_DTR; | |
5213 | } | |
5214 | else if (aic_dev->needwdtr_copy == 0) | |
5215 | { | |
5216 | /* | |
5217 | * This is a preemptive message from the target, we've already | |
5218 | * scanned this target and set our options for it, and we | |
5219 | * don't need a WDTR with this target (for whatever reason), | |
5220 | * so reject this incoming WDTR | |
5221 | */ | |
5222 | reject = TRUE; | |
5223 | break; | |
5224 | } | |
5225 | ||
5226 | /* The device is sending this message first and we have to reply */ | |
5227 | reply = TRUE; | |
5228 | ||
5229 | if (aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
5230 | { | |
5231 | printk(INFO_LEAD "Received pre-emptive WDTR message from " | |
5232 | "target.\n", p->host_no, CTL_OF_SCB(scb)); | |
5233 | } | |
5234 | switch(bus_width) | |
5235 | { | |
5236 | case MSG_EXT_WDTR_BUS_16_BIT: | |
5237 | { | |
5238 | if ( (p->features & AHC_WIDE) && | |
5239 | (aic_dev->goal.width == MSG_EXT_WDTR_BUS_16_BIT) ) | |
5240 | { | |
5241 | new_bus_width = MSG_EXT_WDTR_BUS_16_BIT; | |
5242 | break; | |
5243 | } | |
5244 | } /* Fall through if we aren't a wide card */ | |
5245 | default: | |
5246 | case MSG_EXT_WDTR_BUS_8_BIT: | |
5247 | { | |
5248 | aic_dev->needwdtr_copy = 0; | |
5249 | new_bus_width = MSG_EXT_WDTR_BUS_8_BIT; | |
5250 | break; | |
5251 | } | |
5252 | } | |
5253 | scb->flags &= ~SCB_MSGOUT_BITS; | |
5254 | scb->flags |= SCB_MSGOUT_WDTR; | |
5255 | aic_dev->needwdtr = 0; | |
5256 | if(aic_dev->dtr_pending == 0) | |
5257 | { | |
5258 | /* there is no other command with SCB_DTR_SCB already set that will | |
5259 | * trigger the release of the dtr_pending bit. Both set the bit | |
5260 | * and set scb->flags |= SCB_DTR_SCB | |
5261 | */ | |
5262 | aic_dev->dtr_pending = 1; | |
5263 | scb->flags |= SCB_DTR_SCB; | |
5264 | } | |
5265 | aic_outb(p, HOST_MSG, MSG_OUT); | |
5266 | aic_outb(p, aic_inb(p, SCSISIGO) | ATNO, SCSISIGO); | |
5267 | /* when sending a reply, make sure that the goal settings are | |
5268 | * updated along with current and active since the code that | |
5269 | * will actually build the message for the sequencer uses the | |
5270 | * goal settings as its guidelines. | |
5271 | */ | |
5272 | aic7xxx_set_width(p, target, channel, lun, new_bus_width, | |
5273 | AHC_TRANS_GOAL|AHC_TRANS_ACTIVE|AHC_TRANS_CUR, | |
5274 | aic_dev); | |
5275 | } | |
5276 | ||
5277 | /* | |
5278 | * By virtue of the SCSI spec, a WDTR message negates any existing | |
5279 | * SDTR negotiations. So, even if needsdtr isn't marked for this | |
5280 | * device, we still have to do a new SDTR message if the device | |
5281 | * supports SDTR at all. Therefore, we check needsdtr_copy instead | |
5282 | * of needstr. | |
5283 | */ | |
5284 | aic7xxx_set_syncrate(p, NULL, target, channel, 0, 0, 0, | |
5285 | AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE, | |
5286 | aic_dev); | |
5287 | aic_dev->needsdtr = aic_dev->needsdtr_copy; | |
5288 | done = TRUE; | |
5289 | break; | |
5290 | } | |
5291 | case MSG_EXT_PPR: | |
5292 | { | |
5293 | ||
5294 | if (p->msg_buf[1] != MSG_EXT_PPR_LEN) | |
5295 | { | |
5296 | reject = TRUE; | |
5297 | break; | |
5298 | } | |
5299 | ||
5300 | if (p->msg_len < (MSG_EXT_PPR_LEN + 2)) | |
5301 | { | |
5302 | break; | |
5303 | } | |
5304 | ||
5305 | period = new_period = p->msg_buf[3]; | |
5306 | offset = new_offset = p->msg_buf[5]; | |
5307 | bus_width = new_bus_width = p->msg_buf[6]; | |
5308 | trans_options = new_trans_options = p->msg_buf[7] & 0xf; | |
5309 | ||
5310 | if(aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
5311 | { | |
5312 | printk(INFO_LEAD "Parsing PPR message (%d/%d/%d/%d)\n", | |
5313 | p->host_no, CTL_OF_SCB(scb), period, offset, bus_width, | |
5314 | trans_options); | |
5315 | } | |
5316 | ||
5317 | /* | |
5318 | * We might have a device that is starting negotiation with us | |
5319 | * before we can start up negotiation with it....be prepared to | |
5320 | * have a device ask for a higher speed then we want to give it | |
5321 | * in that case | |
5322 | */ | |
5323 | if ( (scb->flags & (SCB_MSGOUT_SENT|SCB_MSGOUT_PPR)) != | |
5324 | (SCB_MSGOUT_SENT|SCB_MSGOUT_PPR) ) | |
5325 | { | |
5326 | /* Have we scanned the device yet? */ | |
5327 | if (!(aic_dev->flags & DEVICE_DTR_SCANNED)) | |
5328 | { | |
5329 | /* The device is electing to use PPR messages, so we will too until | |
5330 | * we know better */ | |
5331 | aic_dev->needppr = aic_dev->needppr_copy = 1; | |
5332 | aic_dev->needsdtr = aic_dev->needsdtr_copy = 0; | |
5333 | aic_dev->needwdtr = aic_dev->needwdtr_copy = 0; | |
5334 | ||
5335 | /* We know the device is SCSI-3 compliant due to PPR */ | |
5336 | aic_dev->flags |= DEVICE_SCSI_3; | |
5337 | ||
5338 | /* | |
5339 | * Not only is the device starting this up, but it also hasn't | |
5340 | * been scanned yet, so this would likely be our TUR or our | |
5341 | * INQUIRY command at scan time, so we need to use the | |
5342 | * settings from the SEEPROM if they existed. Of course, even | |
5343 | * if we didn't find a SEEPROM, we stuffed default values into | |
5344 | * the user settings anyway, so use those in all cases. | |
5345 | */ | |
5346 | aic_dev->goal.width = p->user[tindex].width; | |
5347 | if(p->user[tindex].offset) | |
5348 | { | |
5349 | aic_dev->goal.period = p->user[tindex].period; | |
5350 | aic_dev->goal.options = p->user[tindex].options; | |
5351 | if(p->features & AHC_ULTRA2) | |
5352 | { | |
5353 | aic_dev->goal.offset = MAX_OFFSET_ULTRA2; | |
5354 | } | |
5355 | else if( aic_dev->goal.width && | |
5356 | (bus_width == MSG_EXT_WDTR_BUS_16_BIT) && | |
5357 | p->features & AHC_WIDE ) | |
5358 | { | |
5359 | aic_dev->goal.offset = MAX_OFFSET_16BIT; | |
5360 | } | |
5361 | else | |
5362 | { | |
5363 | aic_dev->goal.offset = MAX_OFFSET_8BIT; | |
5364 | } | |
5365 | } | |
5366 | else | |
5367 | { | |
5368 | aic_dev->goal.period = 255; | |
5369 | aic_dev->goal.offset = 0; | |
5370 | aic_dev->goal.options = 0; | |
5371 | } | |
5372 | aic_dev->flags |= DEVICE_DTR_SCANNED | DEVICE_PRINT_DTR; | |
5373 | } | |
5374 | else if (aic_dev->needppr_copy == 0) | |
5375 | { | |
5376 | /* | |
5377 | * This is a preemptive message from the target, we've already | |
5378 | * scanned this target and set our options for it, and we | |
5379 | * don't need a PPR with this target (for whatever reason), | |
5380 | * so reject this incoming PPR | |
5381 | */ | |
5382 | reject = TRUE; | |
5383 | break; | |
5384 | } | |
5385 | ||
5386 | /* The device is sending this message first and we have to reply */ | |
5387 | reply = TRUE; | |
5388 | ||
5389 | if (aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
5390 | { | |
5391 | printk(INFO_LEAD "Received pre-emptive PPR message from " | |
5392 | "target.\n", p->host_no, CTL_OF_SCB(scb)); | |
5393 | } | |
5394 | ||
5395 | } | |
5396 | ||
5397 | switch(bus_width) | |
5398 | { | |
5399 | case MSG_EXT_WDTR_BUS_16_BIT: | |
5400 | { | |
5401 | if ( (aic_dev->goal.width == MSG_EXT_WDTR_BUS_16_BIT) && | |
5402 | p->features & AHC_WIDE) | |
5403 | { | |
5404 | break; | |
5405 | } | |
5406 | } | |
5407 | default: | |
5408 | { | |
5409 | if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) && | |
5410 | ((aic_dev->flags & DEVICE_PRINT_DTR) || | |
5411 | (aic7xxx_verbose > 0xffff)) ) | |
5412 | { | |
5413 | reply = TRUE; | |
5414 | printk(INFO_LEAD "Requesting %d bit transfers, rejecting.\n", | |
5415 | p->host_no, CTL_OF_SCB(scb), 8 * (0x01 << bus_width)); | |
5416 | } | |
5417 | } /* We fall through on purpose */ | |
5418 | case MSG_EXT_WDTR_BUS_8_BIT: | |
5419 | { | |
5420 | /* | |
5421 | * According to the spec, if we aren't wide, we also can't be | |
5422 | * Dual Edge so clear the options byte | |
5423 | */ | |
5424 | new_trans_options = 0; | |
5425 | new_bus_width = MSG_EXT_WDTR_BUS_8_BIT; | |
5426 | break; | |
5427 | } | |
5428 | } | |
5429 | ||
5430 | if(reply) | |
5431 | { | |
5432 | /* when sending a reply, make sure that the goal settings are | |
5433 | * updated along with current and active since the code that | |
5434 | * will actually build the message for the sequencer uses the | |
5435 | * goal settings as its guidelines. | |
5436 | */ | |
5437 | aic7xxx_set_width(p, target, channel, lun, new_bus_width, | |
5438 | AHC_TRANS_GOAL|AHC_TRANS_ACTIVE|AHC_TRANS_CUR, | |
5439 | aic_dev); | |
5440 | syncrate = aic7xxx_find_syncrate(p, &new_period, maxsync, | |
5441 | &new_trans_options); | |
5442 | aic7xxx_validate_offset(p, syncrate, &new_offset, new_bus_width); | |
5443 | aic7xxx_set_syncrate(p, syncrate, target, channel, new_period, | |
5444 | new_offset, new_trans_options, | |
5445 | AHC_TRANS_GOAL|AHC_TRANS_ACTIVE|AHC_TRANS_CUR, | |
5446 | aic_dev); | |
5447 | } | |
5448 | else | |
5449 | { | |
5450 | aic7xxx_set_width(p, target, channel, lun, new_bus_width, | |
5451 | AHC_TRANS_ACTIVE|AHC_TRANS_CUR, aic_dev); | |
5452 | syncrate = aic7xxx_find_syncrate(p, &new_period, maxsync, | |
5453 | &new_trans_options); | |
5454 | aic7xxx_validate_offset(p, syncrate, &new_offset, new_bus_width); | |
5455 | aic7xxx_set_syncrate(p, syncrate, target, channel, new_period, | |
5456 | new_offset, new_trans_options, | |
5457 | AHC_TRANS_ACTIVE|AHC_TRANS_CUR, aic_dev); | |
5458 | } | |
5459 | ||
5460 | /* | |
5461 | * As it turns out, if we don't *have* to have PPR messages, then | |
5462 | * configure ourselves not to use them since that makes some | |
5463 | * external drive chassis work (those chassis can't parse PPR | |
5464 | * messages and they mangle the SCSI bus until you send a WDTR | |
5465 | * and SDTR that they can understand). | |
5466 | */ | |
5467 | if(new_trans_options == 0) | |
5468 | { | |
5469 | aic_dev->needppr = aic_dev->needppr_copy = 0; | |
5470 | if(new_offset) | |
5471 | { | |
5472 | aic_dev->needsdtr = aic_dev->needsdtr_copy = 1; | |
5473 | } | |
5474 | if (new_bus_width) | |
5475 | { | |
5476 | aic_dev->needwdtr = aic_dev->needwdtr_copy = 1; | |
5477 | } | |
5478 | } | |
5479 | ||
5480 | if((new_offset == 0) && (offset != 0)) | |
5481 | { | |
5482 | /* | |
5483 | * Oops, the syncrate went to low for this card and we fell off | |
5484 | * to async (should never happen with a device that uses PPR | |
5485 | * messages, but have to be complete) | |
5486 | */ | |
5487 | reply = TRUE; | |
5488 | } | |
5489 | ||
5490 | if(reply) | |
5491 | { | |
5492 | scb->flags &= ~SCB_MSGOUT_BITS; | |
5493 | scb->flags |= SCB_MSGOUT_PPR; | |
5494 | aic_outb(p, HOST_MSG, MSG_OUT); | |
5495 | aic_outb(p, aic_inb(p, SCSISIGO) | ATNO, SCSISIGO); | |
5496 | } | |
5497 | else | |
5498 | { | |
5499 | aic_dev->needppr = 0; | |
5500 | } | |
5501 | done = TRUE; | |
5502 | break; | |
5503 | } | |
5504 | default: | |
5505 | { | |
5506 | reject = TRUE; | |
5507 | break; | |
5508 | } | |
5509 | } /* end of switch(p->msg_type) */ | |
5510 | } /* end of if (!reject && (p->msg_len > 2)) */ | |
5511 | ||
5512 | if (!reply && reject) | |
5513 | { | |
5514 | aic_outb(p, MSG_MESSAGE_REJECT, MSG_OUT); | |
5515 | aic_outb(p, aic_inb(p, SCSISIGO) | ATNO, SCSISIGO); | |
5516 | done = TRUE; | |
5517 | } | |
5518 | return(done); | |
5519 | } | |
5520 | ||
5521 | ||
5522 | /*+F************************************************************************* | |
5523 | * Function: | |
5524 | * aic7xxx_handle_reqinit | |
5525 | * | |
5526 | * Description: | |
5527 | * Interrupt handler for REQINIT interrupts (used to transfer messages to | |
5528 | * and from devices). | |
5529 | *_F*************************************************************************/ | |
5530 | static void | |
5531 | aic7xxx_handle_reqinit(struct aic7xxx_host *p, struct aic7xxx_scb *scb) | |
5532 | { | |
5533 | unsigned char lastbyte; | |
5534 | unsigned char phasemis; | |
5535 | int done = FALSE; | |
5536 | ||
5537 | switch(p->msg_type) | |
5538 | { | |
5539 | case MSG_TYPE_INITIATOR_MSGOUT: | |
5540 | { | |
5541 | if (p->msg_len == 0) | |
5542 | panic("aic7xxx: REQINIT with no active message!\n"); | |
5543 | ||
5544 | lastbyte = (p->msg_index == (p->msg_len - 1)); | |
5545 | phasemis = ( aic_inb(p, SCSISIGI) & PHASE_MASK) != P_MESGOUT; | |
5546 | ||
5547 | if (lastbyte || phasemis) | |
5548 | { | |
5549 | /* Time to end the message */ | |
5550 | p->msg_len = 0; | |
5551 | p->msg_type = MSG_TYPE_NONE; | |
5552 | /* | |
5553 | * NOTE-TO-MYSELF: If you clear the REQINIT after you | |
5554 | * disable REQINITs, then cases of REJECT_MSG stop working | |
5555 | * and hang the bus | |
5556 | */ | |
5557 | aic_outb(p, aic_inb(p, SIMODE1) & ~ENREQINIT, SIMODE1); | |
5558 | aic_outb(p, CLRSCSIINT, CLRINT); | |
5559 | p->flags &= ~AHC_HANDLING_REQINITS; | |
5560 | ||
5561 | if (phasemis == 0) | |
5562 | { | |
5563 | aic_outb(p, p->msg_buf[p->msg_index], SINDEX); | |
5564 | aic_outb(p, 0, RETURN_1); | |
5565 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
5566 | if (aic7xxx_verbose > 0xffff) | |
5567 | printk(INFO_LEAD "Completed sending of REQINIT message.\n", | |
5568 | p->host_no, CTL_OF_SCB(scb)); | |
5569 | #endif | |
5570 | } | |
5571 | else | |
5572 | { | |
5573 | aic_outb(p, MSGOUT_PHASEMIS, RETURN_1); | |
5574 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
5575 | if (aic7xxx_verbose > 0xffff) | |
5576 | printk(INFO_LEAD "PHASEMIS while sending REQINIT message.\n", | |
5577 | p->host_no, CTL_OF_SCB(scb)); | |
5578 | #endif | |
5579 | } | |
5580 | unpause_sequencer(p, TRUE); | |
5581 | } | |
5582 | else | |
5583 | { | |
5584 | /* | |
5585 | * Present the byte on the bus (clearing REQINIT) but don't | |
5586 | * unpause the sequencer. | |
5587 | */ | |
5588 | aic_outb(p, CLRREQINIT, CLRSINT1); | |
5589 | aic_outb(p, CLRSCSIINT, CLRINT); | |
5590 | aic_outb(p, p->msg_buf[p->msg_index++], SCSIDATL); | |
5591 | } | |
5592 | break; | |
5593 | } | |
5594 | case MSG_TYPE_INITIATOR_MSGIN: | |
5595 | { | |
5596 | phasemis = ( aic_inb(p, SCSISIGI) & PHASE_MASK ) != P_MESGIN; | |
5597 | ||
5598 | if (phasemis == 0) | |
5599 | { | |
5600 | p->msg_len++; | |
5601 | /* Pull the byte in without acking it */ | |
5602 | p->msg_buf[p->msg_index] = aic_inb(p, SCSIBUSL); | |
5603 | done = aic7xxx_parse_msg(p, scb); | |
5604 | /* Ack the byte */ | |
5605 | aic_outb(p, CLRREQINIT, CLRSINT1); | |
5606 | aic_outb(p, CLRSCSIINT, CLRINT); | |
5607 | aic_inb(p, SCSIDATL); | |
5608 | p->msg_index++; | |
5609 | } | |
5610 | if (phasemis || done) | |
5611 | { | |
5612 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
5613 | if (aic7xxx_verbose > 0xffff) | |
5614 | { | |
5615 | if (phasemis) | |
5616 | printk(INFO_LEAD "PHASEMIS while receiving REQINIT message.\n", | |
5617 | p->host_no, CTL_OF_SCB(scb)); | |
5618 | else | |
5619 | printk(INFO_LEAD "Completed receipt of REQINIT message.\n", | |
5620 | p->host_no, CTL_OF_SCB(scb)); | |
5621 | } | |
5622 | #endif | |
5623 | /* Time to end our message session */ | |
5624 | p->msg_len = 0; | |
5625 | p->msg_type = MSG_TYPE_NONE; | |
5626 | aic_outb(p, aic_inb(p, SIMODE1) & ~ENREQINIT, SIMODE1); | |
5627 | aic_outb(p, CLRSCSIINT, CLRINT); | |
5628 | p->flags &= ~AHC_HANDLING_REQINITS; | |
5629 | unpause_sequencer(p, TRUE); | |
5630 | } | |
5631 | break; | |
5632 | } | |
5633 | default: | |
5634 | { | |
5635 | panic("aic7xxx: Unknown REQINIT message type.\n"); | |
5636 | break; | |
5637 | } | |
5638 | } /* End of switch(p->msg_type) */ | |
5639 | } | |
5640 | ||
5641 | /*+F************************************************************************* | |
5642 | * Function: | |
5643 | * aic7xxx_handle_scsiint | |
5644 | * | |
5645 | * Description: | |
5646 | * Interrupt handler for SCSI interrupts (SCSIINT). | |
5647 | *-F*************************************************************************/ | |
5648 | static void | |
5649 | aic7xxx_handle_scsiint(struct aic7xxx_host *p, unsigned char intstat) | |
5650 | { | |
5651 | unsigned char scb_index; | |
5652 | unsigned char status; | |
5653 | struct aic7xxx_scb *scb; | |
5654 | struct aic_dev_data *aic_dev; | |
5655 | ||
5656 | scb_index = aic_inb(p, SCB_TAG); | |
5657 | status = aic_inb(p, SSTAT1); | |
5658 | ||
5659 | if (scb_index < p->scb_data->numscbs) | |
5660 | { | |
5661 | scb = p->scb_data->scb_array[scb_index]; | |
5662 | if ((scb->flags & SCB_ACTIVE) == 0) | |
5663 | { | |
5664 | scb = NULL; | |
5665 | } | |
5666 | } | |
5667 | else | |
5668 | { | |
5669 | scb = NULL; | |
5670 | } | |
5671 | ||
5672 | ||
5673 | if ((status & SCSIRSTI) != 0) | |
5674 | { | |
5675 | int channel; | |
5676 | ||
5677 | if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 ) | |
5678 | channel = (aic_inb(p, SBLKCTL) & SELBUSB) >> 3; | |
5679 | else | |
5680 | channel = 0; | |
5681 | ||
5682 | if (aic7xxx_verbose & VERBOSE_RESET) | |
5683 | printk(WARN_LEAD "Someone else reset the channel!!\n", | |
5684 | p->host_no, channel, -1, -1); | |
5685 | if (aic7xxx_panic_on_abort) | |
5686 | aic7xxx_panic_abort(p, NULL); | |
5687 | /* | |
5688 | * Go through and abort all commands for the channel, but do not | |
5689 | * reset the channel again. | |
5690 | */ | |
5691 | aic7xxx_reset_channel(p, channel, /* Initiate Reset */ FALSE); | |
5692 | aic7xxx_run_done_queue(p, TRUE); | |
5693 | scb = NULL; | |
5694 | } | |
5695 | else if ( ((status & BUSFREE) != 0) && ((status & SELTO) == 0) ) | |
5696 | { | |
5697 | /* | |
5698 | * First look at what phase we were last in. If it's message-out, | |
5699 | * chances are pretty good that the bus free was in response to | |
5700 | * one of our abort requests. | |
5701 | */ | |
5702 | unsigned char lastphase = aic_inb(p, LASTPHASE); | |
5703 | unsigned char saved_tcl = aic_inb(p, SAVED_TCL); | |
5704 | unsigned char target = (saved_tcl >> 4) & 0x0F; | |
5705 | int channel; | |
5706 | int printerror = TRUE; | |
5707 | ||
5708 | if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 ) | |
5709 | channel = (aic_inb(p, SBLKCTL) & SELBUSB) >> 3; | |
5710 | else | |
5711 | channel = 0; | |
5712 | ||
5713 | aic_outb(p, aic_inb(p, SCSISEQ) & (ENSELI|ENRSELI|ENAUTOATNP), | |
5714 | SCSISEQ); | |
5715 | if (lastphase == P_MESGOUT) | |
5716 | { | |
5717 | unsigned char message; | |
5718 | ||
5719 | message = aic_inb(p, SINDEX); | |
5720 | ||
5721 | if ((message == MSG_ABORT) || (message == MSG_ABORT_TAG)) | |
5722 | { | |
5723 | if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS) | |
5724 | printk(INFO_LEAD "SCB %d abort delivered.\n", p->host_no, | |
5725 | CTL_OF_SCB(scb), scb->hscb->tag); | |
5726 | aic7xxx_reset_device(p, target, channel, ALL_LUNS, | |
5727 | (message == MSG_ABORT) ? SCB_LIST_NULL : scb->hscb->tag ); | |
5728 | aic7xxx_run_done_queue(p, TRUE); | |
5729 | scb = NULL; | |
5730 | printerror = 0; | |
5731 | } | |
5732 | else if (message == MSG_BUS_DEV_RESET) | |
5733 | { | |
5734 | aic7xxx_handle_device_reset(p, target, channel); | |
5735 | scb = NULL; | |
5736 | printerror = 0; | |
5737 | } | |
5738 | } | |
5739 | if ( (scb != NULL) && (scb->flags & SCB_DTR_SCB) ) | |
5740 | { | |
5741 | /* | |
5742 | * Hmmm...error during a negotiation command. Either we have a | |
5743 | * borken bus, or the device doesn't like our negotiation message. | |
5744 | * Since we check the INQUIRY data of a device before sending it | |
5745 | * negotiation messages, assume the bus is borken for whatever | |
5746 | * reason. Complete the command. | |
5747 | */ | |
5748 | printerror = 0; | |
5749 | aic7xxx_reset_device(p, target, channel, ALL_LUNS, scb->hscb->tag); | |
5750 | aic7xxx_run_done_queue(p, TRUE); | |
5751 | scb = NULL; | |
5752 | } | |
5753 | if (printerror != 0) | |
5754 | { | |
5755 | if (scb != NULL) | |
5756 | { | |
5757 | unsigned char tag; | |
5758 | ||
5759 | if ((scb->hscb->control & TAG_ENB) != 0) | |
5760 | { | |
5761 | tag = scb->hscb->tag; | |
5762 | } | |
5763 | else | |
5764 | { | |
5765 | tag = SCB_LIST_NULL; | |
5766 | } | |
5767 | aic7xxx_reset_device(p, target, channel, ALL_LUNS, tag); | |
5768 | aic7xxx_run_done_queue(p, TRUE); | |
5769 | } | |
5770 | else | |
5771 | { | |
5772 | aic7xxx_reset_device(p, target, channel, ALL_LUNS, SCB_LIST_NULL); | |
5773 | aic7xxx_run_done_queue(p, TRUE); | |
5774 | } | |
5775 | printk(INFO_LEAD "Unexpected busfree, LASTPHASE = 0x%x, " | |
5776 | "SEQADDR = 0x%x\n", p->host_no, channel, target, -1, lastphase, | |
5777 | (aic_inb(p, SEQADDR1) << 8) | aic_inb(p, SEQADDR0)); | |
5778 | scb = NULL; | |
5779 | } | |
5780 | aic_outb(p, MSG_NOOP, MSG_OUT); | |
5781 | aic_outb(p, aic_inb(p, SIMODE1) & ~(ENBUSFREE|ENREQINIT), | |
5782 | SIMODE1); | |
5783 | p->flags &= ~AHC_HANDLING_REQINITS; | |
5784 | aic_outb(p, CLRBUSFREE, CLRSINT1); | |
5785 | aic_outb(p, CLRSCSIINT, CLRINT); | |
5786 | restart_sequencer(p); | |
5787 | unpause_sequencer(p, TRUE); | |
5788 | } | |
5789 | else if ((status & SELTO) != 0) | |
5790 | { | |
c1278289 H |
5791 | unsigned char scbptr; |
5792 | unsigned char nextscb; | |
5793 | struct scsi_cmnd *cmd; | |
1da177e4 LT |
5794 | |
5795 | scbptr = aic_inb(p, WAITING_SCBH); | |
5796 | if (scbptr > p->scb_data->maxhscbs) | |
5797 | { | |
5798 | /* | |
5799 | * I'm still trying to track down exactly how this happens, but until | |
5800 | * I find it, this code will make sure we aren't passing bogus values | |
5801 | * into the SCBPTR register, even if that register will just wrap | |
5802 | * things around, we still don't like having out of range variables. | |
5803 | * | |
5804 | * NOTE: Don't check the aic7xxx_verbose variable, I want this message | |
5805 | * to always be displayed. | |
5806 | */ | |
5807 | printk(INFO_LEAD "Invalid WAITING_SCBH value %d, improvising.\n", | |
5808 | p->host_no, -1, -1, -1, scbptr); | |
5809 | if (p->scb_data->maxhscbs > 4) | |
5810 | scbptr &= (p->scb_data->maxhscbs - 1); | |
5811 | else | |
5812 | scbptr &= 0x03; | |
5813 | } | |
5814 | aic_outb(p, scbptr, SCBPTR); | |
5815 | scb_index = aic_inb(p, SCB_TAG); | |
5816 | ||
5817 | scb = NULL; | |
5818 | if (scb_index < p->scb_data->numscbs) | |
5819 | { | |
5820 | scb = p->scb_data->scb_array[scb_index]; | |
5821 | if ((scb->flags & SCB_ACTIVE) == 0) | |
5822 | { | |
5823 | scb = NULL; | |
5824 | } | |
5825 | } | |
5826 | if (scb == NULL) | |
5827 | { | |
5828 | printk(WARN_LEAD "Referenced SCB %d not valid during SELTO.\n", | |
5829 | p->host_no, -1, -1, -1, scb_index); | |
5830 | printk(KERN_WARNING " SCSISEQ = 0x%x SEQADDR = 0x%x SSTAT0 = 0x%x " | |
5831 | "SSTAT1 = 0x%x\n", aic_inb(p, SCSISEQ), | |
5832 | aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8), | |
5833 | aic_inb(p, SSTAT0), aic_inb(p, SSTAT1)); | |
5834 | if (aic7xxx_panic_on_abort) | |
5835 | aic7xxx_panic_abort(p, NULL); | |
5836 | } | |
5837 | else | |
5838 | { | |
5839 | cmd = scb->cmd; | |
5840 | cmd->result = (DID_TIME_OUT << 16); | |
5841 | ||
5842 | /* | |
5843 | * Clear out this hardware SCB | |
5844 | */ | |
5845 | aic_outb(p, 0, SCB_CONTROL); | |
5846 | ||
5847 | /* | |
5848 | * Clear out a few values in the card that are in an undetermined | |
5849 | * state. | |
5850 | */ | |
5851 | aic_outb(p, MSG_NOOP, MSG_OUT); | |
5852 | ||
5853 | /* | |
5854 | * Shift the waiting for selection queue forward | |
5855 | */ | |
5856 | nextscb = aic_inb(p, SCB_NEXT); | |
5857 | aic_outb(p, nextscb, WAITING_SCBH); | |
5858 | ||
5859 | /* | |
5860 | * Put this SCB back on the free list. | |
5861 | */ | |
5862 | aic7xxx_add_curscb_to_free_list(p); | |
5863 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
5864 | if (aic7xxx_verbose > 0xffff) | |
5865 | printk(INFO_LEAD "Selection Timeout.\n", p->host_no, CTL_OF_SCB(scb)); | |
5866 | #endif | |
5867 | if (scb->flags & SCB_QUEUED_ABORT) | |
5868 | { | |
5869 | /* | |
5870 | * We know that this particular SCB had to be the queued abort since | |
5871 | * the disconnected SCB would have gotten a reconnect instead. | |
5872 | * What we need to do then is to let the command timeout again so | |
5873 | * we get a reset since this abort just failed. | |
5874 | */ | |
5875 | cmd->result = 0; | |
5876 | scb = NULL; | |
5877 | } | |
5878 | } | |
5879 | /* | |
5880 | * Keep the sequencer from trying to restart any selections | |
5881 | */ | |
5882 | aic_outb(p, aic_inb(p, SCSISEQ) & ~ENSELO, SCSISEQ); | |
5883 | /* | |
5884 | * Make sure the data bits on the bus are released | |
5885 | * Don't do this on 7770 chipsets, it makes them give us | |
5886 | * a BRKADDRINT and kills the card. | |
5887 | */ | |
5888 | if( (p->chip & ~AHC_CHIPID_MASK) == AHC_PCI ) | |
5889 | aic_outb(p, 0, SCSIBUSL); | |
5890 | ||
5891 | /* | |
5892 | * Delay for the selection timeout delay period then stop the selection | |
5893 | */ | |
5894 | udelay(301); | |
5895 | aic_outb(p, CLRSELINGO, CLRSINT0); | |
5896 | /* | |
5897 | * Clear out all the interrupt status bits | |
5898 | */ | |
5899 | aic_outb(p, aic_inb(p, SIMODE1) & ~(ENREQINIT|ENBUSFREE), SIMODE1); | |
5900 | p->flags &= ~AHC_HANDLING_REQINITS; | |
5901 | aic_outb(p, CLRSELTIMEO | CLRBUSFREE, CLRSINT1); | |
5902 | aic_outb(p, CLRSCSIINT, CLRINT); | |
5903 | /* | |
5904 | * Restarting the sequencer will stop the selection and make sure devices | |
5905 | * are allowed to reselect in. | |
5906 | */ | |
5907 | restart_sequencer(p); | |
5908 | unpause_sequencer(p, TRUE); | |
5909 | } | |
5910 | else if (scb == NULL) | |
5911 | { | |
5912 | printk(WARN_LEAD "aic7xxx_isr - referenced scb not valid " | |
5913 | "during scsiint 0x%x scb(%d)\n" | |
5914 | " SIMODE0 0x%x, SIMODE1 0x%x, SSTAT0 0x%x, SEQADDR 0x%x\n", | |
5915 | p->host_no, -1, -1, -1, status, scb_index, aic_inb(p, SIMODE0), | |
5916 | aic_inb(p, SIMODE1), aic_inb(p, SSTAT0), | |
5917 | (aic_inb(p, SEQADDR1) << 8) | aic_inb(p, SEQADDR0)); | |
5918 | /* | |
5919 | * Turn off the interrupt and set status to zero, so that it | |
5920 | * falls through the rest of the SCSIINT code. | |
5921 | */ | |
5922 | aic_outb(p, status, CLRSINT1); | |
5923 | aic_outb(p, CLRSCSIINT, CLRINT); | |
5924 | unpause_sequencer(p, /* unpause always */ TRUE); | |
5925 | scb = NULL; | |
5926 | } | |
5927 | else if (status & SCSIPERR) | |
5928 | { | |
5929 | /* | |
5930 | * Determine the bus phase and queue an appropriate message. | |
5931 | */ | |
c1278289 H |
5932 | char *phase; |
5933 | struct scsi_cmnd *cmd; | |
5934 | unsigned char mesg_out = MSG_NOOP; | |
5935 | unsigned char lastphase = aic_inb(p, LASTPHASE); | |
5936 | unsigned char sstat2 = aic_inb(p, SSTAT2); | |
1da177e4 LT |
5937 | |
5938 | cmd = scb->cmd; | |
5939 | switch (lastphase) | |
5940 | { | |
5941 | case P_DATAOUT: | |
5942 | phase = "Data-Out"; | |
5943 | break; | |
5944 | case P_DATAIN: | |
5945 | phase = "Data-In"; | |
5946 | mesg_out = MSG_INITIATOR_DET_ERR; | |
5947 | break; | |
5948 | case P_COMMAND: | |
5949 | phase = "Command"; | |
5950 | break; | |
5951 | case P_MESGOUT: | |
5952 | phase = "Message-Out"; | |
5953 | break; | |
5954 | case P_STATUS: | |
5955 | phase = "Status"; | |
5956 | mesg_out = MSG_INITIATOR_DET_ERR; | |
5957 | break; | |
5958 | case P_MESGIN: | |
5959 | phase = "Message-In"; | |
5960 | mesg_out = MSG_PARITY_ERROR; | |
5961 | break; | |
5962 | default: | |
5963 | phase = "unknown"; | |
5964 | break; | |
5965 | } | |
5966 | ||
5967 | /* | |
5968 | * A parity error has occurred during a data | |
5969 | * transfer phase. Flag it and continue. | |
5970 | */ | |
5971 | if( (p->features & AHC_ULTRA3) && | |
5972 | (aic_inb(p, SCSIRATE) & AHC_SYNCRATE_CRC) && | |
5973 | (lastphase == P_DATAIN) ) | |
5974 | { | |
5975 | printk(WARN_LEAD "CRC error during %s phase.\n", | |
5976 | p->host_no, CTL_OF_SCB(scb), phase); | |
5977 | if(sstat2 & CRCVALERR) | |
5978 | { | |
5979 | printk(WARN_LEAD " CRC error in intermediate CRC packet.\n", | |
5980 | p->host_no, CTL_OF_SCB(scb)); | |
5981 | } | |
5982 | if(sstat2 & CRCENDERR) | |
5983 | { | |
5984 | printk(WARN_LEAD " CRC error in ending CRC packet.\n", | |
5985 | p->host_no, CTL_OF_SCB(scb)); | |
5986 | } | |
5987 | if(sstat2 & CRCREQERR) | |
5988 | { | |
5989 | printk(WARN_LEAD " Target incorrectly requested a CRC packet.\n", | |
5990 | p->host_no, CTL_OF_SCB(scb)); | |
5991 | } | |
5992 | if(sstat2 & DUAL_EDGE_ERROR) | |
5993 | { | |
5994 | printk(WARN_LEAD " Dual Edge transmission error.\n", | |
5995 | p->host_no, CTL_OF_SCB(scb)); | |
5996 | } | |
5997 | } | |
5998 | else if( (lastphase == P_MESGOUT) && | |
5999 | (scb->flags & SCB_MSGOUT_PPR) ) | |
6000 | { | |
6001 | /* | |
6002 | * As per the draft specs, any device capable of supporting any of | |
6003 | * the option values other than 0 are not allowed to reject the | |
6004 | * PPR message. Instead, they must negotiate out what they do | |
6005 | * support instead of rejecting our offering or else they cause | |
6006 | * a parity error during msg_out phase to signal that they don't | |
6007 | * like our settings. | |
6008 | */ | |
6009 | aic_dev = AIC_DEV(scb->cmd); | |
6010 | aic_dev->needppr = aic_dev->needppr_copy = 0; | |
6011 | aic7xxx_set_width(p, scb->cmd->device->id, scb->cmd->device->channel, scb->cmd->device->lun, | |
6012 | MSG_EXT_WDTR_BUS_8_BIT, | |
6013 | (AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE), | |
6014 | aic_dev); | |
6015 | aic7xxx_set_syncrate(p, NULL, scb->cmd->device->id, scb->cmd->device->channel, 0, 0, | |
6016 | 0, AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE, | |
6017 | aic_dev); | |
6018 | aic_dev->goal.options = 0; | |
6019 | scb->flags &= ~SCB_MSGOUT_BITS; | |
6020 | if(aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
6021 | { | |
6022 | printk(INFO_LEAD "parity error during PPR message, reverting " | |
6023 | "to WDTR/SDTR\n", p->host_no, CTL_OF_SCB(scb)); | |
6024 | } | |
6025 | if ( aic_dev->goal.width ) | |
6026 | { | |
6027 | aic_dev->needwdtr = aic_dev->needwdtr_copy = 1; | |
6028 | } | |
6029 | if ( aic_dev->goal.offset ) | |
6030 | { | |
6031 | if( aic_dev->goal.period <= 9 ) | |
6032 | { | |
6033 | aic_dev->goal.period = 10; | |
6034 | } | |
6035 | aic_dev->needsdtr = aic_dev->needsdtr_copy = 1; | |
6036 | } | |
6037 | scb = NULL; | |
6038 | } | |
6039 | ||
6040 | /* | |
6041 | * We've set the hardware to assert ATN if we get a parity | |
6042 | * error on "in" phases, so all we need to do is stuff the | |
6043 | * message buffer with the appropriate message. "In" phases | |
6044 | * have set mesg_out to something other than MSG_NOP. | |
6045 | */ | |
6046 | if (mesg_out != MSG_NOOP) | |
6047 | { | |
6048 | aic_outb(p, mesg_out, MSG_OUT); | |
6049 | aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO); | |
6050 | scb = NULL; | |
6051 | } | |
6052 | aic_outb(p, CLRSCSIPERR, CLRSINT1); | |
6053 | aic_outb(p, CLRSCSIINT, CLRINT); | |
6054 | unpause_sequencer(p, /* unpause_always */ TRUE); | |
6055 | } | |
6056 | else if ( (status & REQINIT) && | |
6057 | (p->flags & AHC_HANDLING_REQINITS) ) | |
6058 | { | |
6059 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
6060 | if (aic7xxx_verbose > 0xffff) | |
6061 | printk(INFO_LEAD "Handling REQINIT, SSTAT1=0x%x.\n", p->host_no, | |
6062 | CTL_OF_SCB(scb), aic_inb(p, SSTAT1)); | |
6063 | #endif | |
6064 | aic7xxx_handle_reqinit(p, scb); | |
6065 | return; | |
6066 | } | |
6067 | else | |
6068 | { | |
6069 | /* | |
6070 | * We don't know what's going on. Turn off the | |
6071 | * interrupt source and try to continue. | |
6072 | */ | |
6073 | if (aic7xxx_verbose & VERBOSE_SCSIINT) | |
6074 | printk(INFO_LEAD "Unknown SCSIINT status, SSTAT1(0x%x).\n", | |
6075 | p->host_no, -1, -1, -1, status); | |
6076 | aic_outb(p, status, CLRSINT1); | |
6077 | aic_outb(p, CLRSCSIINT, CLRINT); | |
6078 | unpause_sequencer(p, /* unpause always */ TRUE); | |
6079 | scb = NULL; | |
6080 | } | |
6081 | if (scb != NULL) | |
6082 | { | |
6083 | aic7xxx_done(p, scb); | |
6084 | } | |
6085 | } | |
6086 | ||
6087 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
6088 | static void | |
6089 | aic7xxx_check_scbs(struct aic7xxx_host *p, char *buffer) | |
6090 | { | |
6091 | unsigned char saved_scbptr, free_scbh, dis_scbh, wait_scbh, temp; | |
6092 | int i, bogus, lost; | |
6093 | static unsigned char scb_status[AIC7XXX_MAXSCB]; | |
6094 | ||
6095 | #define SCB_NO_LIST 0 | |
6096 | #define SCB_FREE_LIST 1 | |
6097 | #define SCB_WAITING_LIST 2 | |
6098 | #define SCB_DISCONNECTED_LIST 4 | |
6099 | #define SCB_CURRENTLY_ACTIVE 8 | |
6100 | ||
6101 | /* | |
6102 | * Note, these checks will fail on a regular basis once the machine moves | |
6103 | * beyond the bus scan phase. The problem is race conditions concerning | |
6104 | * the scbs and where they are linked in. When you have 30 or so commands | |
6105 | * outstanding on the bus, and run this twice with every interrupt, the | |
6106 | * chances get pretty good that you'll catch the sequencer with an SCB | |
6107 | * only partially linked in. Therefore, once we pass the scan phase | |
6108 | * of the bus, we really should disable this function. | |
6109 | */ | |
6110 | bogus = FALSE; | |
6111 | memset(&scb_status[0], 0, sizeof(scb_status)); | |
6112 | pause_sequencer(p); | |
6113 | saved_scbptr = aic_inb(p, SCBPTR); | |
6114 | if (saved_scbptr >= p->scb_data->maxhscbs) | |
6115 | { | |
6116 | printk("Bogus SCBPTR %d\n", saved_scbptr); | |
6117 | bogus = TRUE; | |
6118 | } | |
6119 | scb_status[saved_scbptr] = SCB_CURRENTLY_ACTIVE; | |
6120 | free_scbh = aic_inb(p, FREE_SCBH); | |
6121 | if ( (free_scbh != SCB_LIST_NULL) && | |
6122 | (free_scbh >= p->scb_data->maxhscbs) ) | |
6123 | { | |
6124 | printk("Bogus FREE_SCBH %d\n", free_scbh); | |
6125 | bogus = TRUE; | |
6126 | } | |
6127 | else | |
6128 | { | |
6129 | temp = free_scbh; | |
6130 | while( (temp != SCB_LIST_NULL) && (temp < p->scb_data->maxhscbs) ) | |
6131 | { | |
6132 | if(scb_status[temp] & 0x07) | |
6133 | { | |
6134 | printk("HSCB %d on multiple lists, status 0x%02x", temp, | |
6135 | scb_status[temp] | SCB_FREE_LIST); | |
6136 | bogus = TRUE; | |
6137 | } | |
6138 | scb_status[temp] |= SCB_FREE_LIST; | |
6139 | aic_outb(p, temp, SCBPTR); | |
6140 | temp = aic_inb(p, SCB_NEXT); | |
6141 | } | |
6142 | } | |
6143 | ||
6144 | dis_scbh = aic_inb(p, DISCONNECTED_SCBH); | |
6145 | if ( (dis_scbh != SCB_LIST_NULL) && | |
6146 | (dis_scbh >= p->scb_data->maxhscbs) ) | |
6147 | { | |
6148 | printk("Bogus DISCONNECTED_SCBH %d\n", dis_scbh); | |
6149 | bogus = TRUE; | |
6150 | } | |
6151 | else | |
6152 | { | |
6153 | temp = dis_scbh; | |
6154 | while( (temp != SCB_LIST_NULL) && (temp < p->scb_data->maxhscbs) ) | |
6155 | { | |
6156 | if(scb_status[temp] & 0x07) | |
6157 | { | |
6158 | printk("HSCB %d on multiple lists, status 0x%02x", temp, | |
6159 | scb_status[temp] | SCB_DISCONNECTED_LIST); | |
6160 | bogus = TRUE; | |
6161 | } | |
6162 | scb_status[temp] |= SCB_DISCONNECTED_LIST; | |
6163 | aic_outb(p, temp, SCBPTR); | |
6164 | temp = aic_inb(p, SCB_NEXT); | |
6165 | } | |
6166 | } | |
6167 | ||
6168 | wait_scbh = aic_inb(p, WAITING_SCBH); | |
6169 | if ( (wait_scbh != SCB_LIST_NULL) && | |
6170 | (wait_scbh >= p->scb_data->maxhscbs) ) | |
6171 | { | |
6172 | printk("Bogus WAITING_SCBH %d\n", wait_scbh); | |
6173 | bogus = TRUE; | |
6174 | } | |
6175 | else | |
6176 | { | |
6177 | temp = wait_scbh; | |
6178 | while( (temp != SCB_LIST_NULL) && (temp < p->scb_data->maxhscbs) ) | |
6179 | { | |
6180 | if(scb_status[temp] & 0x07) | |
6181 | { | |
6182 | printk("HSCB %d on multiple lists, status 0x%02x", temp, | |
6183 | scb_status[temp] | SCB_WAITING_LIST); | |
6184 | bogus = TRUE; | |
6185 | } | |
6186 | scb_status[temp] |= SCB_WAITING_LIST; | |
6187 | aic_outb(p, temp, SCBPTR); | |
6188 | temp = aic_inb(p, SCB_NEXT); | |
6189 | } | |
6190 | } | |
6191 | ||
6192 | lost=0; | |
6193 | for(i=0; i < p->scb_data->maxhscbs; i++) | |
6194 | { | |
6195 | aic_outb(p, i, SCBPTR); | |
6196 | temp = aic_inb(p, SCB_NEXT); | |
6197 | if ( ((temp != SCB_LIST_NULL) && | |
6198 | (temp >= p->scb_data->maxhscbs)) ) | |
6199 | { | |
6200 | printk("HSCB %d bad, SCB_NEXT invalid(%d).\n", i, temp); | |
6201 | bogus = TRUE; | |
6202 | } | |
6203 | if ( temp == i ) | |
6204 | { | |
6205 | printk("HSCB %d bad, SCB_NEXT points to self.\n", i); | |
6206 | bogus = TRUE; | |
6207 | } | |
6208 | if (scb_status[i] == 0) | |
6209 | lost++; | |
6210 | if (lost > 1) | |
6211 | { | |
6212 | printk("Too many lost scbs.\n"); | |
6213 | bogus=TRUE; | |
6214 | } | |
6215 | } | |
6216 | aic_outb(p, saved_scbptr, SCBPTR); | |
6217 | unpause_sequencer(p, FALSE); | |
6218 | if (bogus) | |
6219 | { | |
6220 | printk("Bogus parameters found in card SCB array structures.\n"); | |
6221 | printk("%s\n", buffer); | |
6222 | aic7xxx_panic_abort(p, NULL); | |
6223 | } | |
6224 | return; | |
6225 | } | |
6226 | #endif | |
6227 | ||
6228 | ||
6229 | /*+F************************************************************************* | |
6230 | * Function: | |
6231 | * aic7xxx_handle_command_completion_intr | |
6232 | * | |
6233 | * Description: | |
6234 | * SCSI command completion interrupt handler. | |
6235 | *-F*************************************************************************/ | |
6236 | static void | |
6237 | aic7xxx_handle_command_completion_intr(struct aic7xxx_host *p) | |
6238 | { | |
c1278289 H |
6239 | struct aic7xxx_scb *scb = NULL; |
6240 | struct aic_dev_data *aic_dev; | |
6241 | struct scsi_cmnd *cmd; | |
6242 | unsigned char scb_index, tindex; | |
1da177e4 LT |
6243 | |
6244 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
6245 | if( (p->isr_count < 16) && (aic7xxx_verbose > 0xffff) ) | |
6246 | printk(INFO_LEAD "Command Complete Int.\n", p->host_no, -1, -1, -1); | |
6247 | #endif | |
6248 | ||
6249 | /* | |
6250 | * Read the INTSTAT location after clearing the CMDINT bit. This forces | |
6251 | * any posted PCI writes to flush to memory. Gerard Roudier suggested | |
6252 | * this fix to the possible race of clearing the CMDINT bit but not | |
6253 | * having all command bytes flushed onto the qoutfifo. | |
6254 | */ | |
6255 | aic_outb(p, CLRCMDINT, CLRINT); | |
6256 | aic_inb(p, INTSTAT); | |
6257 | /* | |
6258 | * The sequencer will continue running when it | |
6259 | * issues this interrupt. There may be >1 commands | |
6260 | * finished, so loop until we've processed them all. | |
6261 | */ | |
6262 | ||
6263 | while (p->qoutfifo[p->qoutfifonext] != SCB_LIST_NULL) | |
6264 | { | |
6265 | scb_index = p->qoutfifo[p->qoutfifonext]; | |
6266 | p->qoutfifo[p->qoutfifonext++] = SCB_LIST_NULL; | |
6267 | if ( scb_index >= p->scb_data->numscbs ) | |
6268 | { | |
6269 | printk(WARN_LEAD "CMDCMPLT with invalid SCB index %d\n", p->host_no, | |
6270 | -1, -1, -1, scb_index); | |
6271 | continue; | |
6272 | } | |
6273 | scb = p->scb_data->scb_array[scb_index]; | |
6274 | if (!(scb->flags & SCB_ACTIVE) || (scb->cmd == NULL)) | |
6275 | { | |
6276 | printk(WARN_LEAD "CMDCMPLT without command for SCB %d, SCB flags " | |
6277 | "0x%x, cmd 0x%lx\n", p->host_no, -1, -1, -1, scb_index, scb->flags, | |
6278 | (unsigned long) scb->cmd); | |
6279 | continue; | |
6280 | } | |
6281 | tindex = TARGET_INDEX(scb->cmd); | |
6282 | aic_dev = AIC_DEV(scb->cmd); | |
6283 | if (scb->flags & SCB_QUEUED_ABORT) | |
6284 | { | |
6285 | pause_sequencer(p); | |
6286 | if ( ((aic_inb(p, LASTPHASE) & PHASE_MASK) != P_BUSFREE) && | |
6287 | (aic_inb(p, SCB_TAG) == scb->hscb->tag) ) | |
6288 | { | |
6289 | unpause_sequencer(p, FALSE); | |
6290 | continue; | |
6291 | } | |
6292 | aic7xxx_reset_device(p, scb->cmd->device->id, scb->cmd->device->channel, | |
6293 | scb->cmd->device->lun, scb->hscb->tag); | |
6294 | scb->flags &= ~(SCB_QUEUED_FOR_DONE | SCB_RESET | SCB_ABORT | | |
6295 | SCB_QUEUED_ABORT); | |
6296 | unpause_sequencer(p, FALSE); | |
6297 | } | |
6298 | else if (scb->flags & SCB_ABORT) | |
6299 | { | |
6300 | /* | |
6301 | * We started to abort this, but it completed on us, let it | |
6302 | * through as successful | |
6303 | */ | |
6304 | scb->flags &= ~(SCB_ABORT|SCB_RESET); | |
6305 | } | |
6306 | else if (scb->flags & SCB_SENSE) | |
6307 | { | |
6308 | char *buffer = &scb->cmd->sense_buffer[0]; | |
6309 | ||
6310 | if (buffer[12] == 0x47 || buffer[12] == 0x54) | |
6311 | { | |
6312 | /* | |
6313 | * Signal that we need to re-negotiate things. | |
6314 | */ | |
6315 | aic_dev->needppr = aic_dev->needppr_copy; | |
6316 | aic_dev->needsdtr = aic_dev->needsdtr_copy; | |
6317 | aic_dev->needwdtr = aic_dev->needwdtr_copy; | |
6318 | } | |
6319 | } | |
6320 | cmd = scb->cmd; | |
6321 | if (scb->hscb->residual_SG_segment_count != 0) | |
6322 | { | |
6323 | aic7xxx_calculate_residual(p, scb); | |
6324 | } | |
6325 | cmd->result |= (aic7xxx_error(cmd) << 16); | |
6326 | aic7xxx_done(p, scb); | |
6327 | } | |
6328 | } | |
6329 | ||
6330 | /*+F************************************************************************* | |
6331 | * Function: | |
6332 | * aic7xxx_isr | |
6333 | * | |
6334 | * Description: | |
6335 | * SCSI controller interrupt handler. | |
6336 | *-F*************************************************************************/ | |
6337 | static void | |
c7bec5ab | 6338 | aic7xxx_isr(void *dev_id) |
1da177e4 LT |
6339 | { |
6340 | struct aic7xxx_host *p; | |
6341 | unsigned char intstat; | |
6342 | ||
c7bec5ab | 6343 | p = dev_id; |
1da177e4 LT |
6344 | |
6345 | /* | |
6346 | * Just a few sanity checks. Make sure that we have an int pending. | |
6347 | * Also, if PCI, then we are going to check for a PCI bus error status | |
6348 | * should we get too many spurious interrupts. | |
6349 | */ | |
6350 | if (!((intstat = aic_inb(p, INTSTAT)) & INT_PEND)) | |
6351 | { | |
6352 | #ifdef CONFIG_PCI | |
6353 | if ( (p->chip & AHC_PCI) && (p->spurious_int > 500) && | |
6354 | !(p->flags & AHC_HANDLING_REQINITS) ) | |
6355 | { | |
6356 | if ( aic_inb(p, ERROR) & PCIERRSTAT ) | |
6357 | { | |
6358 | aic7xxx_pci_intr(p); | |
6359 | } | |
6360 | p->spurious_int = 0; | |
6361 | } | |
6362 | else if ( !(p->flags & AHC_HANDLING_REQINITS) ) | |
6363 | { | |
6364 | p->spurious_int++; | |
6365 | } | |
6366 | #endif | |
6367 | return; | |
6368 | } | |
6369 | ||
6370 | p->spurious_int = 0; | |
6371 | ||
6372 | /* | |
6373 | * Keep track of interrupts for /proc/scsi | |
6374 | */ | |
6375 | p->isr_count++; | |
6376 | ||
6377 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
6378 | if ( (p->isr_count < 16) && (aic7xxx_verbose > 0xffff) && | |
6379 | (aic7xxx_panic_on_abort) && (p->flags & AHC_PAGESCBS) ) | |
6380 | aic7xxx_check_scbs(p, "Bogus settings at start of interrupt."); | |
6381 | #endif | |
6382 | ||
6383 | /* | |
6384 | * Handle all the interrupt sources - especially for SCSI | |
6385 | * interrupts, we won't get a second chance at them. | |
6386 | */ | |
6387 | if (intstat & CMDCMPLT) | |
6388 | { | |
6389 | aic7xxx_handle_command_completion_intr(p); | |
6390 | } | |
6391 | ||
6392 | if (intstat & BRKADRINT) | |
6393 | { | |
6394 | int i; | |
6395 | unsigned char errno = aic_inb(p, ERROR); | |
6396 | ||
6397 | printk(KERN_ERR "(scsi%d) BRKADRINT error(0x%x):\n", p->host_no, errno); | |
6398 | for (i = 0; i < ARRAY_SIZE(hard_error); i++) | |
6399 | { | |
6400 | if (errno & hard_error[i].errno) | |
6401 | { | |
6402 | printk(KERN_ERR " %s\n", hard_error[i].errmesg); | |
6403 | } | |
6404 | } | |
6405 | printk(KERN_ERR "(scsi%d) SEQADDR=0x%x\n", p->host_no, | |
6406 | (((aic_inb(p, SEQADDR1) << 8) & 0x100) | aic_inb(p, SEQADDR0))); | |
6407 | if (aic7xxx_panic_on_abort) | |
6408 | aic7xxx_panic_abort(p, NULL); | |
6409 | #ifdef CONFIG_PCI | |
6410 | if (errno & PCIERRSTAT) | |
6411 | aic7xxx_pci_intr(p); | |
6412 | #endif | |
6413 | if (errno & (SQPARERR | ILLOPCODE | ILLSADDR)) | |
6414 | { | |
6415 | panic("aic7xxx: unrecoverable BRKADRINT.\n"); | |
6416 | } | |
6417 | if (errno & ILLHADDR) | |
6418 | { | |
6419 | printk(KERN_ERR "(scsi%d) BUG! Driver accessed chip without first " | |
6420 | "pausing controller!\n", p->host_no); | |
6421 | } | |
6422 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
6423 | if (errno & DPARERR) | |
6424 | { | |
6425 | if (aic_inb(p, DMAPARAMS) & DIRECTION) | |
6426 | printk("(scsi%d) while DMAing SCB from host to card.\n", p->host_no); | |
6427 | else | |
6428 | printk("(scsi%d) while DMAing SCB from card to host.\n", p->host_no); | |
6429 | } | |
6430 | #endif | |
6431 | aic_outb(p, CLRPARERR | CLRBRKADRINT, CLRINT); | |
6432 | unpause_sequencer(p, FALSE); | |
6433 | } | |
6434 | ||
6435 | if (intstat & SEQINT) | |
6436 | { | |
6437 | /* | |
6438 | * Read the CCSCBCTL register to work around a bug in the Ultra2 cards | |
6439 | */ | |
6440 | if(p->features & AHC_ULTRA2) | |
6441 | { | |
6442 | aic_inb(p, CCSCBCTL); | |
6443 | } | |
6444 | aic7xxx_handle_seqint(p, intstat); | |
6445 | } | |
6446 | ||
6447 | if (intstat & SCSIINT) | |
6448 | { | |
6449 | aic7xxx_handle_scsiint(p, intstat); | |
6450 | } | |
6451 | ||
6452 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
6453 | if ( (p->isr_count < 16) && (aic7xxx_verbose > 0xffff) && | |
6454 | (aic7xxx_panic_on_abort) && (p->flags & AHC_PAGESCBS) ) | |
6455 | aic7xxx_check_scbs(p, "Bogus settings at end of interrupt."); | |
6456 | #endif | |
6457 | ||
6458 | } | |
6459 | ||
6460 | /*+F************************************************************************* | |
6461 | * Function: | |
6462 | * do_aic7xxx_isr | |
6463 | * | |
6464 | * Description: | |
6465 | * This is a gross hack to solve a problem in linux kernels 2.1.85 and | |
6466 | * above. Please, children, do not try this at home, and if you ever see | |
6467 | * anything like it, please inform the Gross Hack Police immediately | |
6468 | *-F*************************************************************************/ | |
6469 | static irqreturn_t | |
7d12e780 | 6470 | do_aic7xxx_isr(int irq, void *dev_id) |
1da177e4 LT |
6471 | { |
6472 | unsigned long cpu_flags; | |
6473 | struct aic7xxx_host *p; | |
6474 | ||
6475 | p = (struct aic7xxx_host *)dev_id; | |
6476 | if(!p) | |
6477 | return IRQ_NONE; | |
6478 | spin_lock_irqsave(p->host->host_lock, cpu_flags); | |
6479 | p->flags |= AHC_IN_ISR; | |
6480 | do | |
6481 | { | |
c7bec5ab | 6482 | aic7xxx_isr(dev_id); |
1da177e4 LT |
6483 | } while ( (aic_inb(p, INTSTAT) & INT_PEND) ); |
6484 | aic7xxx_done_cmds_complete(p); | |
6485 | aic7xxx_run_waiting_queues(p); | |
6486 | p->flags &= ~AHC_IN_ISR; | |
6487 | spin_unlock_irqrestore(p->host->host_lock, cpu_flags); | |
6488 | ||
6489 | return IRQ_HANDLED; | |
6490 | } | |
6491 | ||
6492 | /*+F************************************************************************* | |
6493 | * Function: | |
6494 | * aic7xxx_init_transinfo | |
6495 | * | |
6496 | * Description: | |
6497 | * Set up the initial aic_dev values from the BIOS settings and from | |
6498 | * INQUIRY results | |
6499 | *-F*************************************************************************/ | |
6500 | static void | |
6501 | aic7xxx_init_transinfo(struct aic7xxx_host *p, struct aic_dev_data *aic_dev) | |
6502 | { | |
f64a181d | 6503 | struct scsi_device *sdpnt = aic_dev->SDptr; |
1da177e4 LT |
6504 | unsigned char tindex; |
6505 | ||
6506 | tindex = sdpnt->id | (sdpnt->channel << 3); | |
6507 | if (!(aic_dev->flags & DEVICE_DTR_SCANNED)) | |
6508 | { | |
6509 | aic_dev->flags |= DEVICE_DTR_SCANNED; | |
6510 | ||
6511 | if ( sdpnt->wdtr && (p->features & AHC_WIDE) ) | |
6512 | { | |
6513 | aic_dev->needwdtr = aic_dev->needwdtr_copy = 1; | |
6514 | aic_dev->goal.width = p->user[tindex].width; | |
6515 | } | |
6516 | else | |
6517 | { | |
6518 | aic_dev->needwdtr = aic_dev->needwdtr_copy = 0; | |
6519 | pause_sequencer(p); | |
6520 | aic7xxx_set_width(p, sdpnt->id, sdpnt->channel, sdpnt->lun, | |
6521 | MSG_EXT_WDTR_BUS_8_BIT, (AHC_TRANS_ACTIVE | | |
6522 | AHC_TRANS_GOAL | | |
6523 | AHC_TRANS_CUR), aic_dev ); | |
6524 | unpause_sequencer(p, FALSE); | |
6525 | } | |
6526 | if ( sdpnt->sdtr && p->user[tindex].offset ) | |
6527 | { | |
6528 | aic_dev->goal.period = p->user[tindex].period; | |
6529 | aic_dev->goal.options = p->user[tindex].options; | |
6530 | if (p->features & AHC_ULTRA2) | |
6531 | aic_dev->goal.offset = MAX_OFFSET_ULTRA2; | |
6532 | else if (aic_dev->goal.width == MSG_EXT_WDTR_BUS_16_BIT) | |
6533 | aic_dev->goal.offset = MAX_OFFSET_16BIT; | |
6534 | else | |
6535 | aic_dev->goal.offset = MAX_OFFSET_8BIT; | |
6536 | if ( sdpnt->ppr && p->user[tindex].period <= 9 && | |
6537 | p->user[tindex].options ) | |
6538 | { | |
6539 | aic_dev->needppr = aic_dev->needppr_copy = 1; | |
6540 | aic_dev->needsdtr = aic_dev->needsdtr_copy = 0; | |
6541 | aic_dev->needwdtr = aic_dev->needwdtr_copy = 0; | |
6542 | aic_dev->flags |= DEVICE_SCSI_3; | |
6543 | } | |
6544 | else | |
6545 | { | |
6546 | aic_dev->needsdtr = aic_dev->needsdtr_copy = 1; | |
6547 | aic_dev->goal.period = max_t(unsigned char, 10, aic_dev->goal.period); | |
6548 | aic_dev->goal.options = 0; | |
6549 | } | |
6550 | } | |
6551 | else | |
6552 | { | |
6553 | aic_dev->needsdtr = aic_dev->needsdtr_copy = 0; | |
6554 | aic_dev->goal.period = 255; | |
6555 | aic_dev->goal.offset = 0; | |
6556 | aic_dev->goal.options = 0; | |
6557 | } | |
6558 | aic_dev->flags |= DEVICE_PRINT_DTR; | |
6559 | } | |
6560 | } | |
6561 | ||
6562 | /*+F************************************************************************* | |
6563 | * Function: | |
6564 | * aic7xxx_slave_alloc | |
6565 | * | |
6566 | * Description: | |
6567 | * Set up the initial aic_dev struct pointers | |
6568 | *-F*************************************************************************/ | |
6569 | static int | |
f64a181d | 6570 | aic7xxx_slave_alloc(struct scsi_device *SDptr) |
1da177e4 LT |
6571 | { |
6572 | struct aic7xxx_host *p = (struct aic7xxx_host *)SDptr->host->hostdata; | |
6573 | struct aic_dev_data *aic_dev; | |
6574 | ||
75a1099c | 6575 | aic_dev = kmalloc(sizeof(struct aic_dev_data), GFP_KERNEL); |
1da177e4 LT |
6576 | if(!aic_dev) |
6577 | return 1; | |
6578 | /* | |
6579 | * Check to see if channel was scanned. | |
6580 | */ | |
6581 | ||
6582 | if (!(p->flags & AHC_A_SCANNED) && (SDptr->channel == 0)) | |
6583 | { | |
6584 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
6585 | printk(INFO_LEAD "Scanning channel for devices.\n", | |
6586 | p->host_no, 0, -1, -1); | |
6587 | p->flags |= AHC_A_SCANNED; | |
6588 | } | |
6589 | else | |
6590 | { | |
6591 | if (!(p->flags & AHC_B_SCANNED) && (SDptr->channel == 1)) | |
6592 | { | |
6593 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
6594 | printk(INFO_LEAD "Scanning channel for devices.\n", | |
6595 | p->host_no, 1, -1, -1); | |
6596 | p->flags |= AHC_B_SCANNED; | |
6597 | } | |
6598 | } | |
6599 | ||
6600 | memset(aic_dev, 0, sizeof(struct aic_dev_data)); | |
6601 | SDptr->hostdata = aic_dev; | |
6602 | aic_dev->SDptr = SDptr; | |
6603 | aic_dev->max_q_depth = 1; | |
6604 | aic_dev->temp_q_depth = 1; | |
6605 | scbq_init(&aic_dev->delayed_scbs); | |
6606 | INIT_LIST_HEAD(&aic_dev->list); | |
6607 | list_add_tail(&aic_dev->list, &p->aic_devs); | |
6608 | return 0; | |
6609 | } | |
6610 | ||
6611 | /*+F************************************************************************* | |
6612 | * Function: | |
6613 | * aic7xxx_device_queue_depth | |
6614 | * | |
6615 | * Description: | |
6616 | * Determines the queue depth for a given device. There are two ways | |
6617 | * a queue depth can be obtained for a tagged queueing device. One | |
6618 | * way is the default queue depth which is determined by whether | |
6619 | * aic7xxx_default_queue_depth. The other is by the aic7xxx_tag_info | |
6620 | * array. | |
6621 | * | |
6622 | * If tagged queueing isn't supported on the device, then we set the | |
6623 | * depth to p->host->hostt->cmd_per_lun for internal driver queueing. | |
6624 | * as the default queue depth. Otherwise, we use either 4 or 8 as the | |
6625 | * default queue depth (dependent on the number of hardware SCBs). | |
6626 | * The other way we determine queue depth is through the use of the | |
6627 | * aic7xxx_tag_info array which is enabled by defining | |
6628 | * AIC7XXX_TAGGED_QUEUEING_BY_DEVICE. This array can be initialized | |
6629 | * with queue depths for individual devices. It also allows tagged | |
6630 | * queueing to be [en|dis]abled for a specific adapter. | |
6631 | *-F*************************************************************************/ | |
6632 | static void | |
f64a181d | 6633 | aic7xxx_device_queue_depth(struct aic7xxx_host *p, struct scsi_device *device) |
1da177e4 LT |
6634 | { |
6635 | int tag_enabled = FALSE; | |
6636 | struct aic_dev_data *aic_dev = device->hostdata; | |
6637 | unsigned char tindex; | |
6638 | ||
6639 | tindex = device->id | (device->channel << 3); | |
6640 | ||
6641 | if (device->simple_tags) | |
6642 | return; // We've already enabled this device | |
6643 | ||
6644 | if (device->tagged_supported) | |
6645 | { | |
6646 | tag_enabled = TRUE; | |
6647 | ||
6648 | if (!(p->discenable & (1 << tindex))) | |
6649 | { | |
6650 | if (aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
6651 | printk(INFO_LEAD "Disconnection disabled, unable to " | |
6652 | "enable tagged queueing.\n", | |
6653 | p->host_no, device->channel, device->id, device->lun); | |
6654 | tag_enabled = FALSE; | |
6655 | } | |
6656 | else | |
6657 | { | |
6658 | if (p->instance >= ARRAY_SIZE(aic7xxx_tag_info)) | |
6659 | { | |
6660 | static int print_warning = TRUE; | |
6661 | if(print_warning) | |
6662 | { | |
6663 | printk(KERN_INFO "aic7xxx: WARNING, insufficient tag_info instances for" | |
6664 | " installed controllers.\n"); | |
6665 | printk(KERN_INFO "aic7xxx: Please update the aic7xxx_tag_info array in" | |
6666 | " the aic7xxx.c source file.\n"); | |
6667 | print_warning = FALSE; | |
6668 | } | |
6669 | aic_dev->max_q_depth = aic_dev->temp_q_depth = | |
6670 | aic7xxx_default_queue_depth; | |
6671 | } | |
6672 | else | |
6673 | { | |
6674 | ||
6675 | if (aic7xxx_tag_info[p->instance].tag_commands[tindex] == 255) | |
6676 | { | |
6677 | tag_enabled = FALSE; | |
6678 | } | |
6679 | else if (aic7xxx_tag_info[p->instance].tag_commands[tindex] == 0) | |
6680 | { | |
6681 | aic_dev->max_q_depth = aic_dev->temp_q_depth = | |
6682 | aic7xxx_default_queue_depth; | |
6683 | } | |
6684 | else | |
6685 | { | |
6686 | aic_dev->max_q_depth = aic_dev->temp_q_depth = | |
6687 | aic7xxx_tag_info[p->instance].tag_commands[tindex]; | |
6688 | } | |
6689 | } | |
6690 | } | |
6691 | } | |
6692 | if (tag_enabled) | |
6693 | { | |
6694 | if (aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
6695 | { | |
6696 | printk(INFO_LEAD "Tagged queuing enabled, queue depth %d.\n", | |
6697 | p->host_no, device->channel, device->id, | |
6698 | device->lun, aic_dev->max_q_depth); | |
6699 | } | |
6700 | scsi_adjust_queue_depth(device, MSG_ORDERED_TAG, aic_dev->max_q_depth); | |
6701 | } | |
6702 | else | |
6703 | { | |
6704 | if (aic7xxx_verbose & VERBOSE_NEGOTIATION2) | |
6705 | { | |
6706 | printk(INFO_LEAD "Tagged queuing disabled, queue depth %d.\n", | |
6707 | p->host_no, device->channel, device->id, | |
6708 | device->lun, device->host->cmd_per_lun); | |
6709 | } | |
6710 | scsi_adjust_queue_depth(device, 0, device->host->cmd_per_lun); | |
6711 | } | |
6712 | return; | |
6713 | } | |
6714 | ||
6715 | /*+F************************************************************************* | |
6716 | * Function: | |
6717 | * aic7xxx_slave_destroy | |
6718 | * | |
6719 | * Description: | |
6720 | * prepare for this device to go away | |
6721 | *-F*************************************************************************/ | |
6722 | static void | |
f64a181d | 6723 | aic7xxx_slave_destroy(struct scsi_device *SDptr) |
1da177e4 LT |
6724 | { |
6725 | struct aic_dev_data *aic_dev = SDptr->hostdata; | |
6726 | ||
6727 | list_del(&aic_dev->list); | |
6728 | SDptr->hostdata = NULL; | |
6729 | kfree(aic_dev); | |
6730 | return; | |
6731 | } | |
6732 | ||
6733 | /*+F************************************************************************* | |
6734 | * Function: | |
6735 | * aic7xxx_slave_configure | |
6736 | * | |
6737 | * Description: | |
6738 | * Configure the device we are attaching to the controller. This is | |
6739 | * where we get to do things like scan the INQUIRY data, set queue | |
6740 | * depths, allocate command structs, etc. | |
6741 | *-F*************************************************************************/ | |
6742 | static int | |
f64a181d | 6743 | aic7xxx_slave_configure(struct scsi_device *SDptr) |
1da177e4 LT |
6744 | { |
6745 | struct aic7xxx_host *p = (struct aic7xxx_host *) SDptr->host->hostdata; | |
6746 | struct aic_dev_data *aic_dev; | |
6747 | int scbnum; | |
6748 | ||
6749 | aic_dev = (struct aic_dev_data *)SDptr->hostdata; | |
6750 | ||
6751 | aic7xxx_init_transinfo(p, aic_dev); | |
6752 | aic7xxx_device_queue_depth(p, SDptr); | |
6753 | if(list_empty(&aic_dev->list)) | |
6754 | list_add_tail(&aic_dev->list, &p->aic_devs); | |
6755 | ||
6756 | scbnum = 0; | |
6757 | list_for_each_entry(aic_dev, &p->aic_devs, list) { | |
6758 | scbnum += aic_dev->max_q_depth; | |
6759 | } | |
6760 | while (scbnum > p->scb_data->numscbs) | |
6761 | { | |
6762 | /* | |
6763 | * Pre-allocate the needed SCBs to get around the possibility of having | |
6764 | * to allocate some when memory is more or less exhausted and we need | |
6765 | * the SCB in order to perform a swap operation (possible deadlock) | |
6766 | */ | |
6767 | if ( aic7xxx_allocate_scb(p) == 0 ) | |
6768 | break; | |
6769 | } | |
6770 | ||
6771 | ||
6772 | return(0); | |
6773 | } | |
6774 | ||
6775 | /*+F************************************************************************* | |
6776 | * Function: | |
6777 | * aic7xxx_probe | |
6778 | * | |
6779 | * Description: | |
6780 | * Probing for EISA boards: it looks like the first two bytes | |
6781 | * are a manufacturer code - three characters, five bits each: | |
6782 | * | |
6783 | * BYTE 0 BYTE 1 BYTE 2 BYTE 3 | |
6784 | * ?1111122 22233333 PPPPPPPP RRRRRRRR | |
6785 | * | |
6786 | * The characters are baselined off ASCII '@', so add that value | |
6787 | * to each to get the real ASCII code for it. The next two bytes | |
6788 | * appear to be a product and revision number, probably vendor- | |
6789 | * specific. This is what is being searched for at each port, | |
6790 | * and what should probably correspond to the ID= field in the | |
6791 | * ECU's .cfg file for the card - if your card is not detected, | |
6792 | * make sure your signature is listed in the array. | |
6793 | * | |
6794 | * The fourth byte's lowest bit seems to be an enabled/disabled | |
6795 | * flag (rest of the bits are reserved?). | |
6796 | * | |
6797 | * NOTE: This function is only needed on Intel and Alpha platforms, | |
6798 | * the other platforms we support don't have EISA/VLB busses. So, | |
6799 | * we #ifdef this entire function to avoid compiler warnings about | |
6800 | * an unused function. | |
6801 | *-F*************************************************************************/ | |
6802 | #if defined(__i386__) || defined(__alpha__) | |
6803 | static int | |
6804 | aic7xxx_probe(int slot, int base, ahc_flag_type *flags) | |
6805 | { | |
6806 | int i; | |
6807 | unsigned char buf[4]; | |
6808 | ||
6809 | static struct { | |
6810 | int n; | |
6811 | unsigned char signature[sizeof(buf)]; | |
6812 | ahc_chip type; | |
6813 | int bios_disabled; | |
6814 | } AIC7xxx[] = { | |
6815 | { 4, { 0x04, 0x90, 0x77, 0x70 }, | |
6816 | AHC_AIC7770|AHC_EISA, FALSE }, /* mb 7770 */ | |
6817 | { 4, { 0x04, 0x90, 0x77, 0x71 }, | |
6818 | AHC_AIC7770|AHC_EISA, FALSE }, /* host adapter 274x */ | |
6819 | { 4, { 0x04, 0x90, 0x77, 0x56 }, | |
6820 | AHC_AIC7770|AHC_VL, FALSE }, /* 284x BIOS enabled */ | |
6821 | { 4, { 0x04, 0x90, 0x77, 0x57 }, | |
6822 | AHC_AIC7770|AHC_VL, TRUE } /* 284x BIOS disabled */ | |
6823 | }; | |
6824 | ||
6825 | /* | |
6826 | * The VL-bus cards need to be primed by | |
6827 | * writing before a signature check. | |
6828 | */ | |
6829 | for (i = 0; i < sizeof(buf); i++) | |
6830 | { | |
6831 | outb(0x80 + i, base); | |
6832 | buf[i] = inb(base + i); | |
6833 | } | |
6834 | ||
6835 | for (i = 0; i < ARRAY_SIZE(AIC7xxx); i++) | |
6836 | { | |
6837 | /* | |
6838 | * Signature match on enabled card? | |
6839 | */ | |
6840 | if (!memcmp(buf, AIC7xxx[i].signature, AIC7xxx[i].n)) | |
6841 | { | |
6842 | if (inb(base + 4) & 1) | |
6843 | { | |
6844 | if (AIC7xxx[i].bios_disabled) | |
6845 | { | |
6846 | *flags |= AHC_USEDEFAULTS; | |
6847 | } | |
6848 | else | |
6849 | { | |
6850 | *flags |= AHC_BIOS_ENABLED; | |
6851 | } | |
6852 | return (i); | |
6853 | } | |
6854 | ||
6855 | printk("aic7xxx: <Adaptec 7770 SCSI Host Adapter> " | |
6856 | "disabled at slot %d, ignored.\n", slot); | |
6857 | } | |
6858 | } | |
6859 | ||
6860 | return (-1); | |
6861 | } | |
6862 | #endif /* (__i386__) || (__alpha__) */ | |
6863 | ||
6864 | ||
6865 | /*+F************************************************************************* | |
6866 | * Function: | |
6867 | * read_2840_seeprom | |
6868 | * | |
6869 | * Description: | |
6870 | * Reads the 2840 serial EEPROM and returns 1 if successful and 0 if | |
6871 | * not successful. | |
6872 | * | |
6873 | * See read_seeprom (for the 2940) for the instruction set of the 93C46 | |
6874 | * chip. | |
6875 | * | |
6876 | * The 2840 interface to the 93C46 serial EEPROM is through the | |
6877 | * STATUS_2840 and SEECTL_2840 registers. The CS_2840, CK_2840, and | |
6878 | * DO_2840 bits of the SEECTL_2840 register are connected to the chip | |
6879 | * select, clock, and data out lines respectively of the serial EEPROM. | |
6880 | * The DI_2840 bit of the STATUS_2840 is connected to the data in line | |
6881 | * of the serial EEPROM. The EEPROM_TF bit of STATUS_2840 register is | |
6882 | * useful in that it gives us an 800 nsec timer. After a read from the | |
6883 | * SEECTL_2840 register the timing flag is cleared and goes high 800 nsec | |
6884 | * later. | |
6885 | *-F*************************************************************************/ | |
6886 | static int | |
6887 | read_284x_seeprom(struct aic7xxx_host *p, struct seeprom_config *sc) | |
6888 | { | |
6889 | int i = 0, k = 0; | |
6890 | unsigned char temp; | |
6891 | unsigned short checksum = 0; | |
6892 | unsigned short *seeprom = (unsigned short *) sc; | |
6893 | struct seeprom_cmd { | |
6894 | unsigned char len; | |
6895 | unsigned char bits[3]; | |
6896 | }; | |
6897 | struct seeprom_cmd seeprom_read = {3, {1, 1, 0}}; | |
6898 | ||
6899 | #define CLOCK_PULSE(p) \ | |
6900 | while ((aic_inb(p, STATUS_2840) & EEPROM_TF) == 0) \ | |
6901 | { \ | |
6902 | ; /* Do nothing */ \ | |
6903 | } \ | |
6904 | (void) aic_inb(p, SEECTL_2840); | |
6905 | ||
6906 | /* | |
6907 | * Read the first 32 registers of the seeprom. For the 2840, | |
6908 | * the 93C46 SEEPROM is a 1024-bit device with 64 16-bit registers | |
6909 | * but only the first 32 are used by Adaptec BIOS. The loop | |
6910 | * will range from 0 to 31. | |
6911 | */ | |
6912 | for (k = 0; k < (sizeof(*sc) / 2); k++) | |
6913 | { | |
6914 | /* | |
6915 | * Send chip select for one clock cycle. | |
6916 | */ | |
6917 | aic_outb(p, CK_2840 | CS_2840, SEECTL_2840); | |
6918 | CLOCK_PULSE(p); | |
6919 | ||
6920 | /* | |
6921 | * Now we're ready to send the read command followed by the | |
6922 | * address of the 16-bit register we want to read. | |
6923 | */ | |
6924 | for (i = 0; i < seeprom_read.len; i++) | |
6925 | { | |
6926 | temp = CS_2840 | seeprom_read.bits[i]; | |
6927 | aic_outb(p, temp, SEECTL_2840); | |
6928 | CLOCK_PULSE(p); | |
6929 | temp = temp ^ CK_2840; | |
6930 | aic_outb(p, temp, SEECTL_2840); | |
6931 | CLOCK_PULSE(p); | |
6932 | } | |
6933 | /* | |
6934 | * Send the 6 bit address (MSB first, LSB last). | |
6935 | */ | |
6936 | for (i = 5; i >= 0; i--) | |
6937 | { | |
6938 | temp = k; | |
6939 | temp = (temp >> i) & 1; /* Mask out all but lower bit. */ | |
6940 | temp = CS_2840 | temp; | |
6941 | aic_outb(p, temp, SEECTL_2840); | |
6942 | CLOCK_PULSE(p); | |
6943 | temp = temp ^ CK_2840; | |
6944 | aic_outb(p, temp, SEECTL_2840); | |
6945 | CLOCK_PULSE(p); | |
6946 | } | |
6947 | ||
6948 | /* | |
6949 | * Now read the 16 bit register. An initial 0 precedes the | |
6950 | * register contents which begins with bit 15 (MSB) and ends | |
6951 | * with bit 0 (LSB). The initial 0 will be shifted off the | |
6952 | * top of our word as we let the loop run from 0 to 16. | |
6953 | */ | |
6954 | for (i = 0; i <= 16; i++) | |
6955 | { | |
6956 | temp = CS_2840; | |
6957 | aic_outb(p, temp, SEECTL_2840); | |
6958 | CLOCK_PULSE(p); | |
6959 | temp = temp ^ CK_2840; | |
6960 | seeprom[k] = (seeprom[k] << 1) | (aic_inb(p, STATUS_2840) & DI_2840); | |
6961 | aic_outb(p, temp, SEECTL_2840); | |
6962 | CLOCK_PULSE(p); | |
6963 | } | |
6964 | /* | |
6965 | * The serial EEPROM has a checksum in the last word. Keep a | |
6966 | * running checksum for all words read except for the last | |
6967 | * word. We'll verify the checksum after all words have been | |
6968 | * read. | |
6969 | */ | |
6970 | if (k < (sizeof(*sc) / 2) - 1) | |
6971 | { | |
6972 | checksum = checksum + seeprom[k]; | |
6973 | } | |
6974 | ||
6975 | /* | |
6976 | * Reset the chip select for the next command cycle. | |
6977 | */ | |
6978 | aic_outb(p, 0, SEECTL_2840); | |
6979 | CLOCK_PULSE(p); | |
6980 | aic_outb(p, CK_2840, SEECTL_2840); | |
6981 | CLOCK_PULSE(p); | |
6982 | aic_outb(p, 0, SEECTL_2840); | |
6983 | CLOCK_PULSE(p); | |
6984 | } | |
6985 | ||
6986 | #if 0 | |
6987 | printk("Computed checksum 0x%x, checksum read 0x%x\n", checksum, sc->checksum); | |
6988 | printk("Serial EEPROM:"); | |
6989 | for (k = 0; k < (sizeof(*sc) / 2); k++) | |
6990 | { | |
6991 | if (((k % 8) == 0) && (k != 0)) | |
6992 | { | |
6993 | printk("\n "); | |
6994 | } | |
6995 | printk(" 0x%x", seeprom[k]); | |
6996 | } | |
6997 | printk("\n"); | |
6998 | #endif | |
6999 | ||
7000 | if (checksum != sc->checksum) | |
7001 | { | |
7002 | printk("aic7xxx: SEEPROM checksum error, ignoring SEEPROM settings.\n"); | |
7003 | return (0); | |
7004 | } | |
7005 | ||
7006 | return (1); | |
7007 | #undef CLOCK_PULSE | |
7008 | } | |
7009 | ||
7010 | #define CLOCK_PULSE(p) \ | |
7011 | do { \ | |
7012 | int limit = 0; \ | |
7013 | do { \ | |
7014 | mb(); \ | |
7015 | pause_sequencer(p); /* This is just to generate some PCI */ \ | |
7016 | /* traffic so the PCI read is flushed */ \ | |
7017 | /* it shouldn't be needed, but some */ \ | |
7018 | /* chipsets do indeed appear to need */ \ | |
7019 | /* something to force PCI reads to get */ \ | |
7020 | /* flushed */ \ | |
7021 | udelay(1); /* Do nothing */ \ | |
7022 | } while (((aic_inb(p, SEECTL) & SEERDY) == 0) && (++limit < 1000)); \ | |
7023 | } while(0) | |
7024 | ||
7025 | /*+F************************************************************************* | |
7026 | * Function: | |
7027 | * acquire_seeprom | |
7028 | * | |
7029 | * Description: | |
7030 | * Acquires access to the memory port on PCI controllers. | |
7031 | *-F*************************************************************************/ | |
7032 | static int | |
7033 | acquire_seeprom(struct aic7xxx_host *p) | |
7034 | { | |
7035 | ||
7036 | /* | |
7037 | * Request access of the memory port. When access is | |
7038 | * granted, SEERDY will go high. We use a 1 second | |
7039 | * timeout which should be near 1 second more than | |
7040 | * is needed. Reason: after the 7870 chip reset, there | |
7041 | * should be no contention. | |
7042 | */ | |
7043 | aic_outb(p, SEEMS, SEECTL); | |
7044 | CLOCK_PULSE(p); | |
7045 | if ((aic_inb(p, SEECTL) & SEERDY) == 0) | |
7046 | { | |
7047 | aic_outb(p, 0, SEECTL); | |
7048 | return (0); | |
7049 | } | |
7050 | return (1); | |
7051 | } | |
7052 | ||
7053 | /*+F************************************************************************* | |
7054 | * Function: | |
7055 | * release_seeprom | |
7056 | * | |
7057 | * Description: | |
7058 | * Releases access to the memory port on PCI controllers. | |
7059 | *-F*************************************************************************/ | |
7060 | static void | |
7061 | release_seeprom(struct aic7xxx_host *p) | |
7062 | { | |
7063 | /* | |
7064 | * Make sure the SEEPROM is ready before we release it. | |
7065 | */ | |
7066 | CLOCK_PULSE(p); | |
7067 | aic_outb(p, 0, SEECTL); | |
7068 | } | |
7069 | ||
7070 | /*+F************************************************************************* | |
7071 | * Function: | |
7072 | * read_seeprom | |
7073 | * | |
7074 | * Description: | |
7075 | * Reads the serial EEPROM and returns 1 if successful and 0 if | |
7076 | * not successful. | |
7077 | * | |
7078 | * The instruction set of the 93C46/56/66 chips is as follows: | |
7079 | * | |
7080 | * Start OP | |
7081 | * Function Bit Code Address Data Description | |
7082 | * ------------------------------------------------------------------- | |
7083 | * READ 1 10 A5 - A0 Reads data stored in memory, | |
7084 | * starting at specified address | |
7085 | * EWEN 1 00 11XXXX Write enable must precede | |
7086 | * all programming modes | |
7087 | * ERASE 1 11 A5 - A0 Erase register A5A4A3A2A1A0 | |
7088 | * WRITE 1 01 A5 - A0 D15 - D0 Writes register | |
7089 | * ERAL 1 00 10XXXX Erase all registers | |
7090 | * WRAL 1 00 01XXXX D15 - D0 Writes to all registers | |
7091 | * EWDS 1 00 00XXXX Disables all programming | |
7092 | * instructions | |
7093 | * *Note: A value of X for address is a don't care condition. | |
7094 | * *Note: The 93C56 and 93C66 have 8 address bits. | |
7095 | * | |
7096 | * | |
7097 | * The 93C46 has a four wire interface: clock, chip select, data in, and | |
7098 | * data out. In order to perform one of the above functions, you need | |
7099 | * to enable the chip select for a clock period (typically a minimum of | |
7100 | * 1 usec, with the clock high and low a minimum of 750 and 250 nsec | |
7101 | * respectively. While the chip select remains high, you can clock in | |
7102 | * the instructions (above) starting with the start bit, followed by the | |
7103 | * OP code, Address, and Data (if needed). For the READ instruction, the | |
7104 | * requested 16-bit register contents is read from the data out line but | |
7105 | * is preceded by an initial zero (leading 0, followed by 16-bits, MSB | |
7106 | * first). The clock cycling from low to high initiates the next data | |
7107 | * bit to be sent from the chip. | |
7108 | * | |
7109 | * The 78xx interface to the 93C46 serial EEPROM is through the SEECTL | |
7110 | * register. After successful arbitration for the memory port, the | |
7111 | * SEECS bit of the SEECTL register is connected to the chip select. | |
7112 | * The SEECK, SEEDO, and SEEDI are connected to the clock, data out, | |
7113 | * and data in lines respectively. The SEERDY bit of SEECTL is useful | |
7114 | * in that it gives us an 800 nsec timer. After a write to the SEECTL | |
7115 | * register, the SEERDY goes high 800 nsec later. The one exception | |
7116 | * to this is when we first request access to the memory port. The | |
7117 | * SEERDY goes high to signify that access has been granted and, for | |
7118 | * this case, has no implied timing. | |
7119 | *-F*************************************************************************/ | |
7120 | static int | |
7121 | read_seeprom(struct aic7xxx_host *p, int offset, | |
7122 | unsigned short *scarray, unsigned int len, seeprom_chip_type chip) | |
7123 | { | |
7124 | int i = 0, k; | |
7125 | unsigned char temp; | |
7126 | unsigned short checksum = 0; | |
7127 | struct seeprom_cmd { | |
7128 | unsigned char len; | |
7129 | unsigned char bits[3]; | |
7130 | }; | |
7131 | struct seeprom_cmd seeprom_read = {3, {1, 1, 0}}; | |
7132 | ||
7133 | /* | |
7134 | * Request access of the memory port. | |
7135 | */ | |
7136 | if (acquire_seeprom(p) == 0) | |
7137 | { | |
7138 | return (0); | |
7139 | } | |
7140 | ||
7141 | /* | |
7142 | * Read 'len' registers of the seeprom. For the 7870, the 93C46 | |
7143 | * SEEPROM is a 1024-bit device with 64 16-bit registers but only | |
7144 | * the first 32 are used by Adaptec BIOS. Some adapters use the | |
7145 | * 93C56 SEEPROM which is a 2048-bit device. The loop will range | |
7146 | * from 0 to 'len' - 1. | |
7147 | */ | |
7148 | for (k = 0; k < len; k++) | |
7149 | { | |
7150 | /* | |
7151 | * Send chip select for one clock cycle. | |
7152 | */ | |
7153 | aic_outb(p, SEEMS | SEECK | SEECS, SEECTL); | |
7154 | CLOCK_PULSE(p); | |
7155 | ||
7156 | /* | |
7157 | * Now we're ready to send the read command followed by the | |
7158 | * address of the 16-bit register we want to read. | |
7159 | */ | |
7160 | for (i = 0; i < seeprom_read.len; i++) | |
7161 | { | |
7162 | temp = SEEMS | SEECS | (seeprom_read.bits[i] << 1); | |
7163 | aic_outb(p, temp, SEECTL); | |
7164 | CLOCK_PULSE(p); | |
7165 | temp = temp ^ SEECK; | |
7166 | aic_outb(p, temp, SEECTL); | |
7167 | CLOCK_PULSE(p); | |
7168 | } | |
7169 | /* | |
7170 | * Send the 6 or 8 bit address (MSB first, LSB last). | |
7171 | */ | |
7172 | for (i = ((int) chip - 1); i >= 0; i--) | |
7173 | { | |
7174 | temp = k + offset; | |
7175 | temp = (temp >> i) & 1; /* Mask out all but lower bit. */ | |
7176 | temp = SEEMS | SEECS | (temp << 1); | |
7177 | aic_outb(p, temp, SEECTL); | |
7178 | CLOCK_PULSE(p); | |
7179 | temp = temp ^ SEECK; | |
7180 | aic_outb(p, temp, SEECTL); | |
7181 | CLOCK_PULSE(p); | |
7182 | } | |
7183 | ||
7184 | /* | |
7185 | * Now read the 16 bit register. An initial 0 precedes the | |
7186 | * register contents which begins with bit 15 (MSB) and ends | |
7187 | * with bit 0 (LSB). The initial 0 will be shifted off the | |
7188 | * top of our word as we let the loop run from 0 to 16. | |
7189 | */ | |
7190 | for (i = 0; i <= 16; i++) | |
7191 | { | |
7192 | temp = SEEMS | SEECS; | |
7193 | aic_outb(p, temp, SEECTL); | |
7194 | CLOCK_PULSE(p); | |
7195 | temp = temp ^ SEECK; | |
7196 | scarray[k] = (scarray[k] << 1) | (aic_inb(p, SEECTL) & SEEDI); | |
7197 | aic_outb(p, temp, SEECTL); | |
7198 | CLOCK_PULSE(p); | |
7199 | } | |
7200 | ||
7201 | /* | |
7202 | * The serial EEPROM should have a checksum in the last word. | |
7203 | * Keep a running checksum for all words read except for the | |
7204 | * last word. We'll verify the checksum after all words have | |
7205 | * been read. | |
7206 | */ | |
7207 | if (k < (len - 1)) | |
7208 | { | |
7209 | checksum = checksum + scarray[k]; | |
7210 | } | |
7211 | ||
7212 | /* | |
7213 | * Reset the chip select for the next command cycle. | |
7214 | */ | |
7215 | aic_outb(p, SEEMS, SEECTL); | |
7216 | CLOCK_PULSE(p); | |
7217 | aic_outb(p, SEEMS | SEECK, SEECTL); | |
7218 | CLOCK_PULSE(p); | |
7219 | aic_outb(p, SEEMS, SEECTL); | |
7220 | CLOCK_PULSE(p); | |
7221 | } | |
7222 | ||
7223 | /* | |
7224 | * Release access to the memory port and the serial EEPROM. | |
7225 | */ | |
7226 | release_seeprom(p); | |
7227 | ||
7228 | #if 0 | |
7229 | printk("Computed checksum 0x%x, checksum read 0x%x\n", | |
7230 | checksum, scarray[len - 1]); | |
7231 | printk("Serial EEPROM:"); | |
7232 | for (k = 0; k < len; k++) | |
7233 | { | |
7234 | if (((k % 8) == 0) && (k != 0)) | |
7235 | { | |
7236 | printk("\n "); | |
7237 | } | |
7238 | printk(" 0x%x", scarray[k]); | |
7239 | } | |
7240 | printk("\n"); | |
7241 | #endif | |
7242 | if ( (checksum != scarray[len - 1]) || (checksum == 0) ) | |
7243 | { | |
7244 | return (0); | |
7245 | } | |
7246 | ||
7247 | return (1); | |
7248 | } | |
7249 | ||
7250 | /*+F************************************************************************* | |
7251 | * Function: | |
7252 | * read_brdctl | |
7253 | * | |
7254 | * Description: | |
7255 | * Reads the BRDCTL register. | |
7256 | *-F*************************************************************************/ | |
7257 | static unsigned char | |
7258 | read_brdctl(struct aic7xxx_host *p) | |
7259 | { | |
7260 | unsigned char brdctl, value; | |
7261 | ||
7262 | /* | |
7263 | * Make sure the SEEPROM is ready before we access it | |
7264 | */ | |
7265 | CLOCK_PULSE(p); | |
7266 | if (p->features & AHC_ULTRA2) | |
7267 | { | |
7268 | brdctl = BRDRW_ULTRA2; | |
7269 | aic_outb(p, brdctl, BRDCTL); | |
7270 | CLOCK_PULSE(p); | |
7271 | value = aic_inb(p, BRDCTL); | |
7272 | CLOCK_PULSE(p); | |
7273 | return(value); | |
7274 | } | |
7275 | brdctl = BRDRW; | |
7276 | if ( !((p->chip & AHC_CHIPID_MASK) == AHC_AIC7895) || | |
7277 | (p->flags & AHC_CHNLB) ) | |
7278 | { | |
7279 | brdctl |= BRDCS; | |
7280 | } | |
7281 | aic_outb(p, brdctl, BRDCTL); | |
7282 | CLOCK_PULSE(p); | |
7283 | value = aic_inb(p, BRDCTL); | |
7284 | CLOCK_PULSE(p); | |
7285 | aic_outb(p, 0, BRDCTL); | |
7286 | CLOCK_PULSE(p); | |
7287 | return (value); | |
7288 | } | |
7289 | ||
7290 | /*+F************************************************************************* | |
7291 | * Function: | |
7292 | * write_brdctl | |
7293 | * | |
7294 | * Description: | |
7295 | * Writes a value to the BRDCTL register. | |
7296 | *-F*************************************************************************/ | |
7297 | static void | |
7298 | write_brdctl(struct aic7xxx_host *p, unsigned char value) | |
7299 | { | |
7300 | unsigned char brdctl; | |
7301 | ||
7302 | /* | |
7303 | * Make sure the SEEPROM is ready before we access it | |
7304 | */ | |
7305 | CLOCK_PULSE(p); | |
7306 | if (p->features & AHC_ULTRA2) | |
7307 | { | |
7308 | brdctl = value; | |
7309 | aic_outb(p, brdctl, BRDCTL); | |
7310 | CLOCK_PULSE(p); | |
7311 | brdctl |= BRDSTB_ULTRA2; | |
7312 | aic_outb(p, brdctl, BRDCTL); | |
7313 | CLOCK_PULSE(p); | |
7314 | brdctl &= ~BRDSTB_ULTRA2; | |
7315 | aic_outb(p, brdctl, BRDCTL); | |
7316 | CLOCK_PULSE(p); | |
7317 | read_brdctl(p); | |
7318 | CLOCK_PULSE(p); | |
7319 | } | |
7320 | else | |
7321 | { | |
7322 | brdctl = BRDSTB; | |
7323 | if ( !((p->chip & AHC_CHIPID_MASK) == AHC_AIC7895) || | |
7324 | (p->flags & AHC_CHNLB) ) | |
7325 | { | |
7326 | brdctl |= BRDCS; | |
7327 | } | |
7328 | brdctl = BRDSTB | BRDCS; | |
7329 | aic_outb(p, brdctl, BRDCTL); | |
7330 | CLOCK_PULSE(p); | |
7331 | brdctl |= value; | |
7332 | aic_outb(p, brdctl, BRDCTL); | |
7333 | CLOCK_PULSE(p); | |
7334 | brdctl &= ~BRDSTB; | |
7335 | aic_outb(p, brdctl, BRDCTL); | |
7336 | CLOCK_PULSE(p); | |
7337 | brdctl &= ~BRDCS; | |
7338 | aic_outb(p, brdctl, BRDCTL); | |
7339 | CLOCK_PULSE(p); | |
7340 | } | |
7341 | } | |
7342 | ||
7343 | /*+F************************************************************************* | |
7344 | * Function: | |
7345 | * aic785x_cable_detect | |
7346 | * | |
7347 | * Description: | |
7348 | * Detect the cables that are present on aic785x class controller chips | |
7349 | *-F*************************************************************************/ | |
7350 | static void | |
7351 | aic785x_cable_detect(struct aic7xxx_host *p, int *int_50, | |
7352 | int *ext_present, int *eeprom) | |
7353 | { | |
7354 | unsigned char brdctl; | |
7355 | ||
7356 | aic_outb(p, BRDRW | BRDCS, BRDCTL); | |
7357 | CLOCK_PULSE(p); | |
7358 | aic_outb(p, 0, BRDCTL); | |
7359 | CLOCK_PULSE(p); | |
7360 | brdctl = aic_inb(p, BRDCTL); | |
7361 | CLOCK_PULSE(p); | |
7362 | *int_50 = !(brdctl & BRDDAT5); | |
7363 | *ext_present = !(brdctl & BRDDAT6); | |
7364 | *eeprom = (aic_inb(p, SPIOCAP) & EEPROM); | |
7365 | } | |
7366 | ||
7367 | #undef CLOCK_PULSE | |
7368 | ||
7369 | /*+F************************************************************************* | |
7370 | * Function: | |
7371 | * aic2940_uwpro_cable_detect | |
7372 | * | |
7373 | * Description: | |
7374 | * Detect the cables that are present on the 2940-UWPro cards | |
7375 | * | |
7376 | * NOTE: This function assumes the SEEPROM will have already been acquired | |
7377 | * prior to invocation of this function. | |
7378 | *-F*************************************************************************/ | |
7379 | static void | |
7380 | aic2940_uwpro_wide_cable_detect(struct aic7xxx_host *p, int *int_68, | |
7381 | int *ext_68, int *eeprom) | |
7382 | { | |
7383 | unsigned char brdctl; | |
7384 | ||
7385 | /* | |
7386 | * First read the status of our cables. Set the rom bank to | |
7387 | * 0 since the bank setting serves as a multiplexor for the | |
7388 | * cable detection logic. BRDDAT5 controls the bank switch. | |
7389 | */ | |
7390 | write_brdctl(p, 0); | |
7391 | ||
7392 | /* | |
7393 | * Now we read the state of the internal 68 connector. BRDDAT6 | |
7394 | * is don't care, BRDDAT7 is internal 68. The cable is | |
7395 | * present if the bit is 0 | |
7396 | */ | |
7397 | brdctl = read_brdctl(p); | |
7398 | *int_68 = !(brdctl & BRDDAT7); | |
7399 | ||
7400 | /* | |
7401 | * Set the bank bit in brdctl and then read the external cable state | |
7402 | * and the EEPROM status | |
7403 | */ | |
7404 | write_brdctl(p, BRDDAT5); | |
7405 | brdctl = read_brdctl(p); | |
7406 | ||
7407 | *ext_68 = !(brdctl & BRDDAT6); | |
7408 | *eeprom = !(brdctl & BRDDAT7); | |
7409 | ||
7410 | /* | |
7411 | * We're done, the calling function will release the SEEPROM for us | |
7412 | */ | |
7413 | } | |
7414 | ||
7415 | /*+F************************************************************************* | |
7416 | * Function: | |
7417 | * aic787x_cable_detect | |
7418 | * | |
7419 | * Description: | |
7420 | * Detect the cables that are present on aic787x class controller chips | |
7421 | * | |
7422 | * NOTE: This function assumes the SEEPROM will have already been acquired | |
7423 | * prior to invocation of this function. | |
7424 | *-F*************************************************************************/ | |
7425 | static void | |
7426 | aic787x_cable_detect(struct aic7xxx_host *p, int *int_50, int *int_68, | |
7427 | int *ext_present, int *eeprom) | |
7428 | { | |
7429 | unsigned char brdctl; | |
7430 | ||
7431 | /* | |
7432 | * First read the status of our cables. Set the rom bank to | |
7433 | * 0 since the bank setting serves as a multiplexor for the | |
7434 | * cable detection logic. BRDDAT5 controls the bank switch. | |
7435 | */ | |
7436 | write_brdctl(p, 0); | |
7437 | ||
7438 | /* | |
7439 | * Now we read the state of the two internal connectors. BRDDAT6 | |
7440 | * is internal 50, BRDDAT7 is internal 68. For each, the cable is | |
7441 | * present if the bit is 0 | |
7442 | */ | |
7443 | brdctl = read_brdctl(p); | |
7444 | *int_50 = !(brdctl & BRDDAT6); | |
7445 | *int_68 = !(brdctl & BRDDAT7); | |
7446 | ||
7447 | /* | |
7448 | * Set the bank bit in brdctl and then read the external cable state | |
7449 | * and the EEPROM status | |
7450 | */ | |
7451 | write_brdctl(p, BRDDAT5); | |
7452 | brdctl = read_brdctl(p); | |
7453 | ||
7454 | *ext_present = !(brdctl & BRDDAT6); | |
7455 | *eeprom = !(brdctl & BRDDAT7); | |
7456 | ||
7457 | /* | |
7458 | * We're done, the calling function will release the SEEPROM for us | |
7459 | */ | |
7460 | } | |
7461 | ||
7462 | /*+F************************************************************************* | |
7463 | * Function: | |
7464 | * aic787x_ultra2_term_detect | |
7465 | * | |
7466 | * Description: | |
7467 | * Detect the termination settings present on ultra2 class controllers | |
7468 | * | |
7469 | * NOTE: This function assumes the SEEPROM will have already been acquired | |
7470 | * prior to invocation of this function. | |
7471 | *-F*************************************************************************/ | |
7472 | static void | |
7473 | aic7xxx_ultra2_term_detect(struct aic7xxx_host *p, int *enableSE_low, | |
7474 | int *enableSE_high, int *enableLVD_low, | |
7475 | int *enableLVD_high, int *eprom_present) | |
7476 | { | |
7477 | unsigned char brdctl; | |
7478 | ||
7479 | brdctl = read_brdctl(p); | |
7480 | ||
7481 | *eprom_present = (brdctl & BRDDAT7); | |
7482 | *enableSE_high = (brdctl & BRDDAT6); | |
7483 | *enableSE_low = (brdctl & BRDDAT5); | |
7484 | *enableLVD_high = (brdctl & BRDDAT4); | |
7485 | *enableLVD_low = (brdctl & BRDDAT3); | |
7486 | } | |
7487 | ||
7488 | /*+F************************************************************************* | |
7489 | * Function: | |
7490 | * configure_termination | |
7491 | * | |
7492 | * Description: | |
7493 | * Configures the termination settings on PCI adapters that have | |
7494 | * SEEPROMs available. | |
7495 | *-F*************************************************************************/ | |
7496 | static void | |
7497 | configure_termination(struct aic7xxx_host *p) | |
7498 | { | |
7499 | int internal50_present = 0; | |
7500 | int internal68_present = 0; | |
7501 | int external_present = 0; | |
7502 | int eprom_present = 0; | |
7503 | int enableSE_low = 0; | |
7504 | int enableSE_high = 0; | |
7505 | int enableLVD_low = 0; | |
7506 | int enableLVD_high = 0; | |
7507 | unsigned char brddat = 0; | |
7508 | unsigned char max_target = 0; | |
7509 | unsigned char sxfrctl1 = aic_inb(p, SXFRCTL1); | |
7510 | ||
7511 | if (acquire_seeprom(p)) | |
7512 | { | |
7513 | if (p->features & (AHC_WIDE|AHC_TWIN)) | |
7514 | max_target = 16; | |
7515 | else | |
7516 | max_target = 8; | |
7517 | aic_outb(p, SEEMS | SEECS, SEECTL); | |
7518 | sxfrctl1 &= ~STPWEN; | |
7519 | /* | |
7520 | * The termination/cable detection logic is split into three distinct | |
7521 | * groups. Ultra2 and later controllers, 2940UW-Pro controllers, and | |
7522 | * older 7850, 7860, 7870, 7880, and 7895 controllers. Each has its | |
7523 | * own unique way of detecting their cables and writing the results | |
7524 | * back to the card. | |
7525 | */ | |
7526 | if (p->features & AHC_ULTRA2) | |
7527 | { | |
7528 | /* | |
7529 | * As long as user hasn't overridden term settings, always check the | |
7530 | * cable detection logic | |
7531 | */ | |
7532 | if (aic7xxx_override_term == -1) | |
7533 | { | |
7534 | aic7xxx_ultra2_term_detect(p, &enableSE_low, &enableSE_high, | |
7535 | &enableLVD_low, &enableLVD_high, | |
7536 | &eprom_present); | |
7537 | } | |
7538 | ||
7539 | /* | |
7540 | * If the user is overriding settings, then they have been preserved | |
7541 | * to here as fake adapter_control entries. Parse them and allow | |
7542 | * them to override the detected settings (if we even did detection). | |
7543 | */ | |
7544 | if (!(p->adapter_control & CFSEAUTOTERM)) | |
7545 | { | |
7546 | enableSE_low = (p->adapter_control & CFSTERM); | |
7547 | enableSE_high = (p->adapter_control & CFWSTERM); | |
7548 | } | |
7549 | if (!(p->adapter_control & CFAUTOTERM)) | |
7550 | { | |
7551 | enableLVD_low = enableLVD_high = (p->adapter_control & CFLVDSTERM); | |
7552 | } | |
7553 | ||
7554 | /* | |
7555 | * Now take those settings that we have and translate them into the | |
7556 | * values that must be written into the registers. | |
7557 | * | |
7558 | * Flash Enable = BRDDAT7 | |
7559 | * Secondary High Term Enable = BRDDAT6 | |
7560 | * Secondary Low Term Enable = BRDDAT5 | |
7561 | * LVD/Primary High Term Enable = BRDDAT4 | |
7562 | * LVD/Primary Low Term Enable = STPWEN bit in SXFRCTL1 | |
7563 | */ | |
7564 | if (enableLVD_low != 0) | |
7565 | { | |
7566 | sxfrctl1 |= STPWEN; | |
7567 | p->flags |= AHC_TERM_ENB_LVD; | |
7568 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7569 | printk(KERN_INFO "(scsi%d) LVD/Primary Low byte termination " | |
7570 | "Enabled\n", p->host_no); | |
7571 | } | |
7572 | ||
7573 | if (enableLVD_high != 0) | |
7574 | { | |
7575 | brddat |= BRDDAT4; | |
7576 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7577 | printk(KERN_INFO "(scsi%d) LVD/Primary High byte termination " | |
7578 | "Enabled\n", p->host_no); | |
7579 | } | |
7580 | ||
7581 | if (enableSE_low != 0) | |
7582 | { | |
7583 | brddat |= BRDDAT5; | |
7584 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7585 | printk(KERN_INFO "(scsi%d) Secondary Low byte termination " | |
7586 | "Enabled\n", p->host_no); | |
7587 | } | |
7588 | ||
7589 | if (enableSE_high != 0) | |
7590 | { | |
7591 | brddat |= BRDDAT6; | |
7592 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7593 | printk(KERN_INFO "(scsi%d) Secondary High byte termination " | |
7594 | "Enabled\n", p->host_no); | |
7595 | } | |
7596 | } | |
7597 | else if (p->features & AHC_NEW_AUTOTERM) | |
7598 | { | |
7599 | /* | |
7600 | * The 50 pin connector termination is controlled by STPWEN in the | |
7601 | * SXFRCTL1 register. Since the Adaptec docs typically say the | |
7602 | * controller is not allowed to be in the middle of a cable and | |
7603 | * this is the only connection on that stub of the bus, there is | |
7604 | * no need to even check for narrow termination, it's simply | |
7605 | * always on. | |
7606 | */ | |
7607 | sxfrctl1 |= STPWEN; | |
7608 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7609 | printk(KERN_INFO "(scsi%d) Narrow channel termination Enabled\n", | |
7610 | p->host_no); | |
7611 | ||
7612 | if (p->adapter_control & CFAUTOTERM) | |
7613 | { | |
7614 | aic2940_uwpro_wide_cable_detect(p, &internal68_present, | |
7615 | &external_present, | |
7616 | &eprom_present); | |
7617 | printk(KERN_INFO "(scsi%d) Cables present (Int-50 %s, Int-68 %s, " | |
7618 | "Ext-68 %s)\n", p->host_no, | |
7619 | "Don't Care", | |
7620 | internal68_present ? "YES" : "NO", | |
7621 | external_present ? "YES" : "NO"); | |
7622 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7623 | printk(KERN_INFO "(scsi%d) EEPROM %s present.\n", p->host_no, | |
7624 | eprom_present ? "is" : "is not"); | |
7625 | if (internal68_present && external_present) | |
7626 | { | |
7627 | brddat = 0; | |
7628 | p->flags &= ~AHC_TERM_ENB_SE_HIGH; | |
7629 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7630 | printk(KERN_INFO "(scsi%d) Wide channel termination Disabled\n", | |
7631 | p->host_no); | |
7632 | } | |
7633 | else | |
7634 | { | |
7635 | brddat = BRDDAT6; | |
7636 | p->flags |= AHC_TERM_ENB_SE_HIGH; | |
7637 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7638 | printk(KERN_INFO "(scsi%d) Wide channel termination Enabled\n", | |
7639 | p->host_no); | |
7640 | } | |
7641 | } | |
7642 | else | |
7643 | { | |
7644 | /* | |
7645 | * The termination of the Wide channel is done more like normal | |
7646 | * though, and the setting of this termination is done by writing | |
7647 | * either a 0 or 1 to BRDDAT6 of the BRDDAT register | |
7648 | */ | |
7649 | if (p->adapter_control & CFWSTERM) | |
7650 | { | |
7651 | brddat = BRDDAT6; | |
7652 | p->flags |= AHC_TERM_ENB_SE_HIGH; | |
7653 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7654 | printk(KERN_INFO "(scsi%d) Wide channel termination Enabled\n", | |
7655 | p->host_no); | |
7656 | } | |
7657 | else | |
7658 | { | |
7659 | brddat = 0; | |
7660 | } | |
7661 | } | |
7662 | } | |
7663 | else | |
7664 | { | |
7665 | if (p->adapter_control & CFAUTOTERM) | |
7666 | { | |
7667 | if (p->flags & AHC_MOTHERBOARD) | |
7668 | { | |
7669 | printk(KERN_INFO "(scsi%d) Warning - detected auto-termination\n", | |
7670 | p->host_no); | |
7671 | printk(KERN_INFO "(scsi%d) Please verify driver detected settings " | |
7672 | "are correct.\n", p->host_no); | |
7673 | printk(KERN_INFO "(scsi%d) If not, then please properly set the " | |
7674 | "device termination\n", p->host_no); | |
7675 | printk(KERN_INFO "(scsi%d) in the Adaptec SCSI BIOS by hitting " | |
7676 | "CTRL-A when prompted\n", p->host_no); | |
7677 | printk(KERN_INFO "(scsi%d) during machine bootup.\n", p->host_no); | |
7678 | } | |
7679 | /* Configure auto termination. */ | |
7680 | ||
7681 | if ( (p->chip & AHC_CHIPID_MASK) >= AHC_AIC7870 ) | |
7682 | { | |
7683 | aic787x_cable_detect(p, &internal50_present, &internal68_present, | |
7684 | &external_present, &eprom_present); | |
7685 | } | |
7686 | else | |
7687 | { | |
7688 | aic785x_cable_detect(p, &internal50_present, &external_present, | |
7689 | &eprom_present); | |
7690 | } | |
7691 | ||
7692 | if (max_target <= 8) | |
7693 | internal68_present = 0; | |
7694 | ||
7695 | if (max_target > 8) | |
7696 | { | |
7697 | printk(KERN_INFO "(scsi%d) Cables present (Int-50 %s, Int-68 %s, " | |
7698 | "Ext-68 %s)\n", p->host_no, | |
7699 | internal50_present ? "YES" : "NO", | |
7700 | internal68_present ? "YES" : "NO", | |
7701 | external_present ? "YES" : "NO"); | |
7702 | } | |
7703 | else | |
7704 | { | |
7705 | printk(KERN_INFO "(scsi%d) Cables present (Int-50 %s, Ext-50 %s)\n", | |
7706 | p->host_no, | |
7707 | internal50_present ? "YES" : "NO", | |
7708 | external_present ? "YES" : "NO"); | |
7709 | } | |
7710 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7711 | printk(KERN_INFO "(scsi%d) EEPROM %s present.\n", p->host_no, | |
7712 | eprom_present ? "is" : "is not"); | |
7713 | ||
7714 | /* | |
7715 | * Now set the termination based on what we found. BRDDAT6 | |
7716 | * controls wide termination enable. | |
7717 | * Flash Enable = BRDDAT7 | |
7718 | * SE High Term Enable = BRDDAT6 | |
7719 | */ | |
7720 | if (internal50_present && internal68_present && external_present) | |
7721 | { | |
7722 | printk(KERN_INFO "(scsi%d) Illegal cable configuration!! Only two\n", | |
7723 | p->host_no); | |
7724 | printk(KERN_INFO "(scsi%d) connectors on the SCSI controller may be " | |
7725 | "in use at a time!\n", p->host_no); | |
7726 | /* | |
7727 | * Force termination (low and high byte) on. This is safer than | |
7728 | * leaving it completely off, especially since this message comes | |
7729 | * most often from motherboard controllers that don't even have 3 | |
7730 | * connectors, but instead are failing the cable detection. | |
7731 | */ | |
7732 | internal50_present = external_present = 0; | |
7733 | enableSE_high = enableSE_low = 1; | |
7734 | } | |
7735 | ||
7736 | if ((max_target > 8) && | |
7737 | ((external_present == 0) || (internal68_present == 0)) ) | |
7738 | { | |
7739 | brddat |= BRDDAT6; | |
7740 | p->flags |= AHC_TERM_ENB_SE_HIGH; | |
7741 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7742 | printk(KERN_INFO "(scsi%d) SE High byte termination Enabled\n", | |
7743 | p->host_no); | |
7744 | } | |
7745 | ||
7746 | if ( ((internal50_present ? 1 : 0) + | |
7747 | (internal68_present ? 1 : 0) + | |
7748 | (external_present ? 1 : 0)) <= 1 ) | |
7749 | { | |
7750 | sxfrctl1 |= STPWEN; | |
7751 | p->flags |= AHC_TERM_ENB_SE_LOW; | |
7752 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7753 | printk(KERN_INFO "(scsi%d) SE Low byte termination Enabled\n", | |
7754 | p->host_no); | |
7755 | } | |
7756 | } | |
7757 | else /* p->adapter_control & CFAUTOTERM */ | |
7758 | { | |
7759 | if (p->adapter_control & CFSTERM) | |
7760 | { | |
7761 | sxfrctl1 |= STPWEN; | |
7762 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7763 | printk(KERN_INFO "(scsi%d) SE Low byte termination Enabled\n", | |
7764 | p->host_no); | |
7765 | } | |
7766 | ||
7767 | if (p->adapter_control & CFWSTERM) | |
7768 | { | |
7769 | brddat |= BRDDAT6; | |
7770 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7771 | printk(KERN_INFO "(scsi%d) SE High byte termination Enabled\n", | |
7772 | p->host_no); | |
7773 | } | |
7774 | } | |
7775 | } | |
7776 | ||
7777 | aic_outb(p, sxfrctl1, SXFRCTL1); | |
7778 | write_brdctl(p, brddat); | |
7779 | release_seeprom(p); | |
7780 | } | |
7781 | } | |
7782 | ||
7783 | /*+F************************************************************************* | |
7784 | * Function: | |
7785 | * detect_maxscb | |
7786 | * | |
7787 | * Description: | |
7788 | * Detects the maximum number of SCBs for the controller and returns | |
7789 | * the count and a mask in p (p->maxscbs, p->qcntmask). | |
7790 | *-F*************************************************************************/ | |
7791 | static void | |
7792 | detect_maxscb(struct aic7xxx_host *p) | |
7793 | { | |
7794 | int i; | |
7795 | ||
7796 | /* | |
7797 | * It's possible that we've already done this for multichannel | |
7798 | * adapters. | |
7799 | */ | |
7800 | if (p->scb_data->maxhscbs == 0) | |
7801 | { | |
7802 | /* | |
7803 | * We haven't initialized the SCB settings yet. Walk the SCBs to | |
7804 | * determince how many there are. | |
7805 | */ | |
7806 | aic_outb(p, 0, FREE_SCBH); | |
7807 | ||
7808 | for (i = 0; i < AIC7XXX_MAXSCB; i++) | |
7809 | { | |
7810 | aic_outb(p, i, SCBPTR); | |
7811 | aic_outb(p, i, SCB_CONTROL); | |
7812 | if (aic_inb(p, SCB_CONTROL) != i) | |
7813 | break; | |
7814 | aic_outb(p, 0, SCBPTR); | |
7815 | if (aic_inb(p, SCB_CONTROL) != 0) | |
7816 | break; | |
7817 | ||
7818 | aic_outb(p, i, SCBPTR); | |
7819 | aic_outb(p, 0, SCB_CONTROL); /* Clear the control byte. */ | |
7820 | aic_outb(p, i + 1, SCB_NEXT); /* Set the next pointer. */ | |
7821 | aic_outb(p, SCB_LIST_NULL, SCB_TAG); /* Make the tag invalid. */ | |
7822 | aic_outb(p, SCB_LIST_NULL, SCB_BUSYTARGETS); /* no busy untagged */ | |
7823 | aic_outb(p, SCB_LIST_NULL, SCB_BUSYTARGETS+1);/* targets active yet */ | |
7824 | aic_outb(p, SCB_LIST_NULL, SCB_BUSYTARGETS+2); | |
7825 | aic_outb(p, SCB_LIST_NULL, SCB_BUSYTARGETS+3); | |
7826 | } | |
7827 | ||
7828 | /* Make sure the last SCB terminates the free list. */ | |
7829 | aic_outb(p, i - 1, SCBPTR); | |
7830 | aic_outb(p, SCB_LIST_NULL, SCB_NEXT); | |
7831 | ||
7832 | /* Ensure we clear the first (0) SCBs control byte. */ | |
7833 | aic_outb(p, 0, SCBPTR); | |
7834 | aic_outb(p, 0, SCB_CONTROL); | |
7835 | ||
7836 | p->scb_data->maxhscbs = i; | |
7837 | /* | |
7838 | * Use direct indexing instead for speed | |
7839 | */ | |
7840 | if ( i == AIC7XXX_MAXSCB ) | |
7841 | p->flags &= ~AHC_PAGESCBS; | |
7842 | } | |
7843 | ||
7844 | } | |
7845 | ||
7846 | /*+F************************************************************************* | |
7847 | * Function: | |
7848 | * aic7xxx_register | |
7849 | * | |
7850 | * Description: | |
7851 | * Register a Adaptec aic7xxx chip SCSI controller with the kernel. | |
7852 | *-F*************************************************************************/ | |
7853 | static int | |
d0be4a7d | 7854 | aic7xxx_register(struct scsi_host_template *template, struct aic7xxx_host *p, |
1da177e4 LT |
7855 | int reset_delay) |
7856 | { | |
7857 | int i, result; | |
7858 | int max_targets; | |
7859 | int found = 1; | |
7860 | unsigned char term, scsi_conf; | |
7861 | struct Scsi_Host *host; | |
7862 | ||
7863 | host = p->host; | |
7864 | ||
7865 | p->scb_data->maxscbs = AIC7XXX_MAXSCB; | |
7866 | host->can_queue = AIC7XXX_MAXSCB; | |
7867 | host->cmd_per_lun = 3; | |
7868 | host->sg_tablesize = AIC7XXX_MAX_SG; | |
7869 | host->this_id = p->scsi_id; | |
7870 | host->io_port = p->base; | |
7871 | host->n_io_port = 0xFF; | |
7872 | host->base = p->mbase; | |
7873 | host->irq = p->irq; | |
7874 | if (p->features & AHC_WIDE) | |
7875 | { | |
7876 | host->max_id = 16; | |
7877 | } | |
7878 | if (p->features & AHC_TWIN) | |
7879 | { | |
7880 | host->max_channel = 1; | |
7881 | } | |
7882 | ||
7883 | p->host = host; | |
7884 | p->host_no = host->host_no; | |
7885 | host->unique_id = p->instance; | |
7886 | p->isr_count = 0; | |
7887 | p->next = NULL; | |
7888 | p->completeq.head = NULL; | |
7889 | p->completeq.tail = NULL; | |
7890 | scbq_init(&p->scb_data->free_scbs); | |
7891 | scbq_init(&p->waiting_scbs); | |
7892 | INIT_LIST_HEAD(&p->aic_devs); | |
7893 | ||
7894 | /* | |
7895 | * We currently have no commands of any type | |
7896 | */ | |
7897 | p->qinfifonext = 0; | |
7898 | p->qoutfifonext = 0; | |
7899 | ||
7900 | printk(KERN_INFO "(scsi%d) <%s> found at ", p->host_no, | |
7901 | board_names[p->board_name_index]); | |
7902 | switch(p->chip) | |
7903 | { | |
7904 | case (AHC_AIC7770|AHC_EISA): | |
7905 | printk("EISA slot %d\n", p->pci_device_fn); | |
7906 | break; | |
7907 | case (AHC_AIC7770|AHC_VL): | |
7908 | printk("VLB slot %d\n", p->pci_device_fn); | |
7909 | break; | |
7910 | default: | |
7911 | printk("PCI %d/%d/%d\n", p->pci_bus, PCI_SLOT(p->pci_device_fn), | |
7912 | PCI_FUNC(p->pci_device_fn)); | |
7913 | break; | |
7914 | } | |
7915 | if (p->features & AHC_TWIN) | |
7916 | { | |
7917 | printk(KERN_INFO "(scsi%d) Twin Channel, A SCSI ID %d, B SCSI ID %d, ", | |
7918 | p->host_no, p->scsi_id, p->scsi_id_b); | |
7919 | } | |
7920 | else | |
7921 | { | |
7922 | char *channel; | |
7923 | ||
7924 | channel = ""; | |
7925 | ||
7926 | if ((p->flags & AHC_MULTI_CHANNEL) != 0) | |
7927 | { | |
7928 | channel = " A"; | |
7929 | ||
7930 | if ( (p->flags & (AHC_CHNLB|AHC_CHNLC)) != 0 ) | |
7931 | { | |
7932 | channel = (p->flags & AHC_CHNLB) ? " B" : " C"; | |
7933 | } | |
7934 | } | |
7935 | if (p->features & AHC_WIDE) | |
7936 | { | |
7937 | printk(KERN_INFO "(scsi%d) Wide ", p->host_no); | |
7938 | } | |
7939 | else | |
7940 | { | |
7941 | printk(KERN_INFO "(scsi%d) Narrow ", p->host_no); | |
7942 | } | |
7943 | printk("Channel%s, SCSI ID=%d, ", channel, p->scsi_id); | |
7944 | } | |
7945 | aic_outb(p, 0, SEQ_FLAGS); | |
7946 | ||
7947 | detect_maxscb(p); | |
7948 | ||
7949 | printk("%d/%d SCBs\n", p->scb_data->maxhscbs, p->scb_data->maxscbs); | |
7950 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7951 | { | |
7952 | printk(KERN_INFO "(scsi%d) BIOS %sabled, IO Port 0x%lx, IRQ %d\n", | |
7953 | p->host_no, (p->flags & AHC_BIOS_ENABLED) ? "en" : "dis", | |
7954 | p->base, p->irq); | |
7955 | printk(KERN_INFO "(scsi%d) IO Memory at 0x%lx, MMAP Memory at %p\n", | |
7956 | p->host_no, p->mbase, p->maddr); | |
7957 | } | |
7958 | ||
7959 | #ifdef CONFIG_PCI | |
7960 | /* | |
7961 | * Now that we know our instance number, we can set the flags we need to | |
7962 | * force termination if need be. | |
7963 | */ | |
7964 | if (aic7xxx_stpwlev != -1) | |
7965 | { | |
7966 | /* | |
7967 | * This option only applies to PCI controllers. | |
7968 | */ | |
7969 | if ( (p->chip & ~AHC_CHIPID_MASK) == AHC_PCI) | |
7970 | { | |
7971 | unsigned char devconfig; | |
7972 | ||
7973 | pci_read_config_byte(p->pdev, DEVCONFIG, &devconfig); | |
7974 | if ( (aic7xxx_stpwlev >> p->instance) & 0x01 ) | |
7975 | { | |
7976 | devconfig |= STPWLEVEL; | |
7977 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7978 | printk("(scsi%d) Force setting STPWLEVEL bit\n", p->host_no); | |
7979 | } | |
7980 | else | |
7981 | { | |
7982 | devconfig &= ~STPWLEVEL; | |
7983 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
7984 | printk("(scsi%d) Force clearing STPWLEVEL bit\n", p->host_no); | |
7985 | } | |
7986 | pci_write_config_byte(p->pdev, DEVCONFIG, devconfig); | |
7987 | } | |
7988 | } | |
7989 | #endif | |
7990 | ||
7991 | /* | |
7992 | * That took care of devconfig and stpwlev, now for the actual termination | |
7993 | * settings. | |
7994 | */ | |
7995 | if (aic7xxx_override_term != -1) | |
7996 | { | |
7997 | /* | |
7998 | * Again, this only applies to PCI controllers. We don't have problems | |
7999 | * with the termination on 274x controllers to the best of my knowledge. | |
8000 | */ | |
8001 | if ( (p->chip & ~AHC_CHIPID_MASK) == AHC_PCI) | |
8002 | { | |
8003 | unsigned char term_override; | |
8004 | ||
8005 | term_override = ( (aic7xxx_override_term >> (p->instance * 4)) & 0x0f); | |
8006 | p->adapter_control &= | |
8007 | ~(CFSTERM|CFWSTERM|CFLVDSTERM|CFAUTOTERM|CFSEAUTOTERM); | |
8008 | if ( (p->features & AHC_ULTRA2) && (term_override & 0x0c) ) | |
8009 | { | |
8010 | p->adapter_control |= CFLVDSTERM; | |
8011 | } | |
8012 | if (term_override & 0x02) | |
8013 | { | |
8014 | p->adapter_control |= CFWSTERM; | |
8015 | } | |
8016 | if (term_override & 0x01) | |
8017 | { | |
8018 | p->adapter_control |= CFSTERM; | |
8019 | } | |
8020 | } | |
8021 | } | |
8022 | ||
8023 | if ( (p->flags & AHC_SEEPROM_FOUND) || (aic7xxx_override_term != -1) ) | |
8024 | { | |
8025 | if (p->features & AHC_SPIOCAP) | |
8026 | { | |
8027 | if ( aic_inb(p, SPIOCAP) & SSPIOCPS ) | |
8028 | /* | |
8029 | * Update the settings in sxfrctl1 to match the termination | |
8030 | * settings. | |
8031 | */ | |
8032 | configure_termination(p); | |
8033 | } | |
8034 | else if ((p->chip & AHC_CHIPID_MASK) >= AHC_AIC7870) | |
8035 | { | |
8036 | configure_termination(p); | |
8037 | } | |
8038 | } | |
8039 | ||
8040 | /* | |
8041 | * Set the SCSI Id, SXFRCTL0, SXFRCTL1, and SIMODE1, for both channels | |
8042 | */ | |
8043 | if (p->features & AHC_TWIN) | |
8044 | { | |
8045 | /* Select channel B */ | |
8046 | aic_outb(p, aic_inb(p, SBLKCTL) | SELBUSB, SBLKCTL); | |
8047 | ||
8048 | if ((p->flags & AHC_SEEPROM_FOUND) || (aic7xxx_override_term != -1)) | |
8049 | term = (aic_inb(p, SXFRCTL1) & STPWEN); | |
8050 | else | |
8051 | term = ((p->flags & AHC_TERM_ENB_B) ? STPWEN : 0); | |
8052 | ||
8053 | aic_outb(p, p->scsi_id_b, SCSIID); | |
8054 | scsi_conf = aic_inb(p, SCSICONF + 1); | |
8055 | aic_outb(p, DFON | SPIOEN, SXFRCTL0); | |
8056 | aic_outb(p, (scsi_conf & ENSPCHK) | aic7xxx_seltime | term | | |
8057 | ENSTIMER | ACTNEGEN, SXFRCTL1); | |
8058 | aic_outb(p, 0, SIMODE0); | |
8059 | aic_outb(p, ENSELTIMO | ENSCSIRST | ENSCSIPERR, SIMODE1); | |
8060 | aic_outb(p, 0, SCSIRATE); | |
8061 | ||
8062 | /* Select channel A */ | |
8063 | aic_outb(p, aic_inb(p, SBLKCTL) & ~SELBUSB, SBLKCTL); | |
8064 | } | |
8065 | ||
8066 | if (p->features & AHC_ULTRA2) | |
8067 | { | |
8068 | aic_outb(p, p->scsi_id, SCSIID_ULTRA2); | |
8069 | } | |
8070 | else | |
8071 | { | |
8072 | aic_outb(p, p->scsi_id, SCSIID); | |
8073 | } | |
8074 | if ((p->flags & AHC_SEEPROM_FOUND) || (aic7xxx_override_term != -1)) | |
8075 | term = (aic_inb(p, SXFRCTL1) & STPWEN); | |
8076 | else | |
8077 | term = ((p->flags & (AHC_TERM_ENB_A|AHC_TERM_ENB_LVD)) ? STPWEN : 0); | |
8078 | scsi_conf = aic_inb(p, SCSICONF); | |
8079 | aic_outb(p, DFON | SPIOEN, SXFRCTL0); | |
8080 | aic_outb(p, (scsi_conf & ENSPCHK) | aic7xxx_seltime | term | | |
8081 | ENSTIMER | ACTNEGEN, SXFRCTL1); | |
8082 | aic_outb(p, 0, SIMODE0); | |
8083 | /* | |
8084 | * If we are a cardbus adapter then don't enable SCSI reset detection. | |
8085 | * We shouldn't likely be sharing SCSI busses with someone else, and | |
8086 | * if we don't have a cable currently plugged into the controller then | |
8087 | * we won't have a power source for the SCSI termination, which means | |
8088 | * we'll see infinite incoming bus resets. | |
8089 | */ | |
8090 | if(p->flags & AHC_NO_STPWEN) | |
8091 | aic_outb(p, ENSELTIMO | ENSCSIPERR, SIMODE1); | |
8092 | else | |
8093 | aic_outb(p, ENSELTIMO | ENSCSIRST | ENSCSIPERR, SIMODE1); | |
8094 | aic_outb(p, 0, SCSIRATE); | |
8095 | if ( p->features & AHC_ULTRA2) | |
8096 | aic_outb(p, 0, SCSIOFFSET); | |
8097 | ||
8098 | /* | |
8099 | * Look at the information that board initialization or the board | |
8100 | * BIOS has left us. In the lower four bits of each target's | |
8101 | * scratch space any value other than 0 indicates that we should | |
8102 | * initiate synchronous transfers. If it's zero, the user or the | |
8103 | * BIOS has decided to disable synchronous negotiation to that | |
8104 | * target so we don't activate the needsdtr flag. | |
8105 | */ | |
8106 | if ((p->features & (AHC_TWIN|AHC_WIDE)) == 0) | |
8107 | { | |
8108 | max_targets = 8; | |
8109 | } | |
8110 | else | |
8111 | { | |
8112 | max_targets = 16; | |
8113 | } | |
8114 | ||
8115 | if (!(aic7xxx_no_reset)) | |
8116 | { | |
8117 | /* | |
8118 | * If we reset the bus, then clear the transfer settings, else leave | |
8119 | * them be. | |
8120 | */ | |
8121 | aic_outb(p, 0, ULTRA_ENB); | |
8122 | aic_outb(p, 0, ULTRA_ENB + 1); | |
8123 | p->ultraenb = 0; | |
8124 | } | |
8125 | ||
8126 | /* | |
8127 | * Allocate enough hardware scbs to handle the maximum number of | |
8128 | * concurrent transactions we can have. We have to make sure that | |
8129 | * the allocated memory is contiguous memory. The Linux kmalloc | |
8130 | * routine should only allocate contiguous memory, but note that | |
8131 | * this could be a problem if kmalloc() is changed. | |
8132 | */ | |
8133 | { | |
8134 | size_t array_size; | |
8135 | unsigned int hscb_physaddr; | |
8136 | ||
8137 | array_size = p->scb_data->maxscbs * sizeof(struct aic7xxx_hwscb); | |
8138 | if (p->scb_data->hscbs == NULL) | |
8139 | { | |
8140 | /* pci_alloc_consistent enforces the alignment already and | |
8141 | * clears the area as well. | |
8142 | */ | |
8143 | p->scb_data->hscbs = pci_alloc_consistent(p->pdev, array_size, | |
8144 | &p->scb_data->hscbs_dma); | |
8145 | /* We have to use pci_free_consistent, not kfree */ | |
8146 | p->scb_data->hscb_kmalloc_ptr = NULL; | |
8147 | p->scb_data->hscbs_dma_len = array_size; | |
8148 | } | |
8149 | if (p->scb_data->hscbs == NULL) | |
8150 | { | |
8151 | printk("(scsi%d) Unable to allocate hardware SCB array; " | |
8152 | "failing detection.\n", p->host_no); | |
8153 | aic_outb(p, 0, SIMODE1); | |
8154 | p->irq = 0; | |
8155 | return(0); | |
8156 | } | |
8157 | ||
8158 | hscb_physaddr = p->scb_data->hscbs_dma; | |
8159 | aic_outb(p, hscb_physaddr & 0xFF, HSCB_ADDR); | |
8160 | aic_outb(p, (hscb_physaddr >> 8) & 0xFF, HSCB_ADDR + 1); | |
8161 | aic_outb(p, (hscb_physaddr >> 16) & 0xFF, HSCB_ADDR + 2); | |
8162 | aic_outb(p, (hscb_physaddr >> 24) & 0xFF, HSCB_ADDR + 3); | |
8163 | ||
8164 | /* Set up the fifo areas at the same time */ | |
8165 | p->untagged_scbs = pci_alloc_consistent(p->pdev, 3*256, &p->fifo_dma); | |
8166 | if (p->untagged_scbs == NULL) | |
8167 | { | |
8168 | printk("(scsi%d) Unable to allocate hardware FIFO arrays; " | |
8169 | "failing detection.\n", p->host_no); | |
8170 | p->irq = 0; | |
8171 | return(0); | |
8172 | } | |
8173 | ||
8174 | p->qoutfifo = p->untagged_scbs + 256; | |
8175 | p->qinfifo = p->qoutfifo + 256; | |
8176 | for (i = 0; i < 256; i++) | |
8177 | { | |
8178 | p->untagged_scbs[i] = SCB_LIST_NULL; | |
8179 | p->qinfifo[i] = SCB_LIST_NULL; | |
8180 | p->qoutfifo[i] = SCB_LIST_NULL; | |
8181 | } | |
8182 | ||
8183 | hscb_physaddr = p->fifo_dma; | |
8184 | aic_outb(p, hscb_physaddr & 0xFF, SCBID_ADDR); | |
8185 | aic_outb(p, (hscb_physaddr >> 8) & 0xFF, SCBID_ADDR + 1); | |
8186 | aic_outb(p, (hscb_physaddr >> 16) & 0xFF, SCBID_ADDR + 2); | |
8187 | aic_outb(p, (hscb_physaddr >> 24) & 0xFF, SCBID_ADDR + 3); | |
8188 | } | |
8189 | ||
8190 | /* The Q-FIFOs we just set up are all empty */ | |
8191 | aic_outb(p, 0, QINPOS); | |
8192 | aic_outb(p, 0, KERNEL_QINPOS); | |
8193 | aic_outb(p, 0, QOUTPOS); | |
8194 | ||
8195 | if(p->features & AHC_QUEUE_REGS) | |
8196 | { | |
8197 | aic_outb(p, SCB_QSIZE_256, QOFF_CTLSTA); | |
8198 | aic_outb(p, 0, SDSCB_QOFF); | |
8199 | aic_outb(p, 0, SNSCB_QOFF); | |
8200 | aic_outb(p, 0, HNSCB_QOFF); | |
8201 | } | |
8202 | ||
8203 | /* | |
8204 | * We don't have any waiting selections or disconnected SCBs. | |
8205 | */ | |
8206 | aic_outb(p, SCB_LIST_NULL, WAITING_SCBH); | |
8207 | aic_outb(p, SCB_LIST_NULL, DISCONNECTED_SCBH); | |
8208 | ||
8209 | /* | |
8210 | * Message out buffer starts empty | |
8211 | */ | |
8212 | aic_outb(p, MSG_NOOP, MSG_OUT); | |
8213 | aic_outb(p, MSG_NOOP, LAST_MSG); | |
8214 | ||
8215 | /* | |
8216 | * Set all the other asundry items that haven't been set yet. | |
8217 | * This includes just dumping init values to a lot of registers simply | |
8218 | * to make sure they've been touched and are ready for use parity wise | |
8219 | * speaking. | |
8220 | */ | |
8221 | aic_outb(p, 0, TMODE_CMDADDR); | |
8222 | aic_outb(p, 0, TMODE_CMDADDR + 1); | |
8223 | aic_outb(p, 0, TMODE_CMDADDR + 2); | |
8224 | aic_outb(p, 0, TMODE_CMDADDR + 3); | |
8225 | aic_outb(p, 0, TMODE_CMDADDR_NEXT); | |
8226 | ||
8227 | /* | |
8228 | * Link us into the list of valid hosts | |
8229 | */ | |
8230 | p->next = first_aic7xxx; | |
8231 | first_aic7xxx = p; | |
8232 | ||
8233 | /* | |
8234 | * Allocate the first set of scbs for this controller. This is to stream- | |
8235 | * line code elsewhere in the driver. If we have to check for the existence | |
8236 | * of scbs in certain code sections, it slows things down. However, as | |
8237 | * soon as we register the IRQ for this card, we could get an interrupt that | |
8238 | * includes possibly the SCSI_RSTI interrupt. If we catch that interrupt | |
8239 | * then we are likely to segfault if we don't have at least one chunk of | |
8240 | * SCBs allocated or add checks all through the reset code to make sure | |
8241 | * that the SCBs have been allocated which is an invalid running condition | |
8242 | * and therefore I think it's preferable to simply pre-allocate the first | |
8243 | * chunk of SCBs. | |
8244 | */ | |
8245 | aic7xxx_allocate_scb(p); | |
8246 | ||
8247 | /* | |
8248 | * Load the sequencer program, then re-enable the board - | |
8249 | * resetting the AIC-7770 disables it, leaving the lights | |
8250 | * on with nobody home. | |
8251 | */ | |
8252 | aic7xxx_loadseq(p); | |
8253 | ||
8254 | /* | |
8255 | * Make sure the AUTOFLUSHDIS bit is *not* set in the SBLKCTL register | |
8256 | */ | |
8257 | aic_outb(p, aic_inb(p, SBLKCTL) & ~AUTOFLUSHDIS, SBLKCTL); | |
8258 | ||
8259 | if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 ) | |
8260 | { | |
8261 | aic_outb(p, ENABLE, BCTL); /* Enable the boards BUS drivers. */ | |
8262 | } | |
8263 | ||
8264 | if ( !(aic7xxx_no_reset) ) | |
8265 | { | |
8266 | if (p->features & AHC_TWIN) | |
8267 | { | |
8268 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
8269 | printk(KERN_INFO "(scsi%d) Resetting channel B\n", p->host_no); | |
8270 | aic_outb(p, aic_inb(p, SBLKCTL) | SELBUSB, SBLKCTL); | |
8271 | aic7xxx_reset_current_bus(p); | |
8272 | aic_outb(p, aic_inb(p, SBLKCTL) & ~SELBUSB, SBLKCTL); | |
8273 | } | |
8274 | /* Reset SCSI bus A. */ | |
8275 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
8276 | { /* In case we are a 3940, 3985, or 7895, print the right channel */ | |
8277 | char *channel = ""; | |
8278 | if (p->flags & AHC_MULTI_CHANNEL) | |
8279 | { | |
8280 | channel = " A"; | |
8281 | if (p->flags & (AHC_CHNLB|AHC_CHNLC)) | |
8282 | channel = (p->flags & AHC_CHNLB) ? " B" : " C"; | |
8283 | } | |
8284 | printk(KERN_INFO "(scsi%d) Resetting channel%s\n", p->host_no, channel); | |
8285 | } | |
8286 | ||
8287 | aic7xxx_reset_current_bus(p); | |
8288 | ||
8289 | } | |
8290 | else | |
8291 | { | |
8292 | if (!reset_delay) | |
8293 | { | |
8294 | printk(KERN_INFO "(scsi%d) Not resetting SCSI bus. Note: Don't use " | |
8295 | "the no_reset\n", p->host_no); | |
8296 | printk(KERN_INFO "(scsi%d) option unless you have a verifiable need " | |
8297 | "for it.\n", p->host_no); | |
8298 | } | |
8299 | } | |
8300 | ||
8301 | /* | |
8302 | * Register IRQ with the kernel. Only allow sharing IRQs with | |
8303 | * PCI devices. | |
8304 | */ | |
8305 | if (!(p->chip & AHC_PCI)) | |
8306 | { | |
8307 | result = (request_irq(p->irq, do_aic7xxx_isr, 0, "aic7xxx", p)); | |
8308 | } | |
8309 | else | |
8310 | { | |
1d6f359a | 8311 | result = (request_irq(p->irq, do_aic7xxx_isr, IRQF_SHARED, |
1da177e4 LT |
8312 | "aic7xxx", p)); |
8313 | if (result < 0) | |
8314 | { | |
1d6f359a | 8315 | result = (request_irq(p->irq, do_aic7xxx_isr, IRQF_DISABLED | IRQF_SHARED, |
1da177e4 LT |
8316 | "aic7xxx", p)); |
8317 | } | |
8318 | } | |
8319 | if (result < 0) | |
8320 | { | |
8321 | printk(KERN_WARNING "(scsi%d) Couldn't register IRQ %d, ignoring " | |
8322 | "controller.\n", p->host_no, p->irq); | |
8323 | aic_outb(p, 0, SIMODE1); | |
8324 | p->irq = 0; | |
8325 | return (0); | |
8326 | } | |
8327 | ||
8328 | if(aic_inb(p, INTSTAT) & INT_PEND) | |
8329 | printk(INFO_LEAD "spurious interrupt during configuration, cleared.\n", | |
8330 | p->host_no, -1, -1 , -1); | |
8331 | aic7xxx_clear_intstat(p); | |
8332 | ||
8333 | unpause_sequencer(p, /* unpause_always */ TRUE); | |
8334 | ||
8335 | return (found); | |
8336 | } | |
8337 | ||
8338 | /*+F************************************************************************* | |
8339 | * Function: | |
8340 | * aic7xxx_chip_reset | |
8341 | * | |
8342 | * Description: | |
8343 | * Perform a chip reset on the aic7xxx SCSI controller. The controller | |
8344 | * is paused upon return. | |
8345 | *-F*************************************************************************/ | |
8346 | static int | |
8347 | aic7xxx_chip_reset(struct aic7xxx_host *p) | |
8348 | { | |
8349 | unsigned char sblkctl; | |
8350 | int wait; | |
8351 | ||
8352 | /* | |
8353 | * For some 274x boards, we must clear the CHIPRST bit and pause | |
8354 | * the sequencer. For some reason, this makes the driver work. | |
8355 | */ | |
8356 | aic_outb(p, PAUSE | CHIPRST, HCNTRL); | |
8357 | ||
8358 | /* | |
8359 | * In the future, we may call this function as a last resort for | |
8360 | * error handling. Let's be nice and not do any unnecessary delays. | |
8361 | */ | |
8362 | wait = 1000; /* 1 msec (1000 * 1 msec) */ | |
8363 | while (--wait && !(aic_inb(p, HCNTRL) & CHIPRSTACK)) | |
8364 | { | |
8365 | udelay(1); /* 1 usec */ | |
8366 | } | |
8367 | ||
8368 | pause_sequencer(p); | |
8369 | ||
8370 | sblkctl = aic_inb(p, SBLKCTL) & (SELBUSB|SELWIDE); | |
8371 | if (p->chip & AHC_PCI) | |
8372 | sblkctl &= ~SELBUSB; | |
8373 | switch( sblkctl ) | |
8374 | { | |
8375 | case 0: /* normal narrow card */ | |
8376 | break; | |
8377 | case 2: /* Wide card */ | |
8378 | p->features |= AHC_WIDE; | |
8379 | break; | |
8380 | case 8: /* Twin card */ | |
8381 | p->features |= AHC_TWIN; | |
8382 | p->flags |= AHC_MULTI_CHANNEL; | |
8383 | break; | |
8384 | default: /* hmmm...we don't know what this is */ | |
8385 | printk(KERN_WARNING "aic7xxx: Unsupported adapter type %d, ignoring.\n", | |
8386 | aic_inb(p, SBLKCTL) & 0x0a); | |
8387 | return(-1); | |
8388 | } | |
8389 | return(0); | |
8390 | } | |
8391 | ||
8392 | /*+F************************************************************************* | |
8393 | * Function: | |
8394 | * aic7xxx_alloc | |
8395 | * | |
8396 | * Description: | |
8397 | * Allocate and initialize a host structure. Returns NULL upon error | |
8398 | * and a pointer to a aic7xxx_host struct upon success. | |
8399 | *-F*************************************************************************/ | |
8400 | static struct aic7xxx_host * | |
d0be4a7d | 8401 | aic7xxx_alloc(struct scsi_host_template *sht, struct aic7xxx_host *temp) |
1da177e4 LT |
8402 | { |
8403 | struct aic7xxx_host *p = NULL; | |
8404 | struct Scsi_Host *host; | |
8405 | ||
8406 | /* | |
8407 | * Allocate a storage area by registering us with the mid-level | |
8408 | * SCSI layer. | |
8409 | */ | |
8410 | host = scsi_register(sht, sizeof(struct aic7xxx_host)); | |
8411 | ||
8412 | if (host != NULL) | |
8413 | { | |
8414 | p = (struct aic7xxx_host *) host->hostdata; | |
8415 | memset(p, 0, sizeof(struct aic7xxx_host)); | |
8416 | *p = *temp; | |
8417 | p->host = host; | |
8418 | ||
bbfbbbc1 | 8419 | p->scb_data = kzalloc(sizeof(scb_data_type), GFP_ATOMIC); |
4135f9d2 | 8420 | if (p->scb_data) |
1da177e4 | 8421 | { |
1da177e4 LT |
8422 | scbq_init (&p->scb_data->free_scbs); |
8423 | } | |
8424 | else | |
8425 | { | |
8426 | /* | |
8427 | * For some reason we don't have enough memory. Free the | |
8428 | * allocated memory for the aic7xxx_host struct, and return NULL. | |
8429 | */ | |
8430 | release_region(p->base, MAXREG - MINREG); | |
8431 | scsi_unregister(host); | |
8432 | return(NULL); | |
8433 | } | |
8434 | p->host_no = host->host_no; | |
8435 | } | |
1da177e4 LT |
8436 | return (p); |
8437 | } | |
8438 | ||
8439 | /*+F************************************************************************* | |
8440 | * Function: | |
8441 | * aic7xxx_free | |
8442 | * | |
8443 | * Description: | |
8444 | * Frees and releases all resources associated with an instance of | |
8445 | * the driver (struct aic7xxx_host *). | |
8446 | *-F*************************************************************************/ | |
8447 | static void | |
8448 | aic7xxx_free(struct aic7xxx_host *p) | |
8449 | { | |
8450 | int i; | |
8451 | ||
8452 | /* | |
8453 | * Free the allocated hardware SCB space. | |
8454 | */ | |
8455 | if (p->scb_data != NULL) | |
8456 | { | |
8457 | struct aic7xxx_scb_dma *scb_dma = NULL; | |
8458 | if (p->scb_data->hscbs != NULL) | |
8459 | { | |
8460 | pci_free_consistent(p->pdev, p->scb_data->hscbs_dma_len, | |
8461 | p->scb_data->hscbs, p->scb_data->hscbs_dma); | |
8462 | p->scb_data->hscbs = p->scb_data->hscb_kmalloc_ptr = NULL; | |
8463 | } | |
8464 | /* | |
8465 | * Free the driver SCBs. These were allocated on an as-need | |
8466 | * basis. We allocated these in groups depending on how many | |
8467 | * we could fit into a given amount of RAM. The tail SCB for | |
8468 | * these allocations has a pointer to the alloced area. | |
8469 | */ | |
8470 | for (i = 0; i < p->scb_data->numscbs; i++) | |
8471 | { | |
8472 | if (p->scb_data->scb_array[i]->scb_dma != scb_dma) | |
8473 | { | |
8474 | scb_dma = p->scb_data->scb_array[i]->scb_dma; | |
8475 | pci_free_consistent(p->pdev, scb_dma->dma_len, | |
8476 | (void *)((unsigned long)scb_dma->dma_address | |
8477 | - scb_dma->dma_offset), | |
8478 | scb_dma->dma_address); | |
8479 | } | |
c9475cb0 | 8480 | kfree(p->scb_data->scb_array[i]->kmalloc_ptr); |
1da177e4 LT |
8481 | p->scb_data->scb_array[i] = NULL; |
8482 | } | |
8483 | ||
8484 | /* | |
8485 | * Free the SCB data area. | |
8486 | */ | |
8487 | kfree(p->scb_data); | |
8488 | } | |
8489 | ||
8490 | pci_free_consistent(p->pdev, 3*256, (void *)p->untagged_scbs, p->fifo_dma); | |
8491 | } | |
8492 | ||
8493 | /*+F************************************************************************* | |
8494 | * Function: | |
8495 | * aic7xxx_load_seeprom | |
8496 | * | |
8497 | * Description: | |
8498 | * Load the seeprom and configure adapter and target settings. | |
8499 | * Returns 1 if the load was successful and 0 otherwise. | |
8500 | *-F*************************************************************************/ | |
8501 | static void | |
8502 | aic7xxx_load_seeprom(struct aic7xxx_host *p, unsigned char *sxfrctl1) | |
8503 | { | |
8504 | int have_seeprom = 0; | |
8505 | int i, max_targets, mask; | |
8506 | unsigned char scsirate, scsi_conf; | |
8507 | unsigned short scarray[128]; | |
8508 | struct seeprom_config *sc = (struct seeprom_config *) scarray; | |
8509 | ||
8510 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
8511 | { | |
8512 | printk(KERN_INFO "aic7xxx: Loading serial EEPROM..."); | |
8513 | } | |
8514 | switch (p->chip) | |
8515 | { | |
8516 | case (AHC_AIC7770|AHC_EISA): /* None of these adapters have seeproms. */ | |
8517 | if (aic_inb(p, SCSICONF) & TERM_ENB) | |
8518 | p->flags |= AHC_TERM_ENB_A; | |
8519 | if ( (p->features & AHC_TWIN) && (aic_inb(p, SCSICONF + 1) & TERM_ENB) ) | |
8520 | p->flags |= AHC_TERM_ENB_B; | |
8521 | break; | |
8522 | ||
8523 | case (AHC_AIC7770|AHC_VL): | |
8524 | have_seeprom = read_284x_seeprom(p, (struct seeprom_config *) scarray); | |
8525 | break; | |
8526 | ||
8527 | default: | |
8528 | have_seeprom = read_seeprom(p, (p->flags & (AHC_CHNLB|AHC_CHNLC)), | |
8529 | scarray, p->sc_size, p->sc_type); | |
8530 | if (!have_seeprom) | |
8531 | { | |
8532 | if(p->sc_type == C46) | |
8533 | have_seeprom = read_seeprom(p, (p->flags & (AHC_CHNLB|AHC_CHNLC)), | |
8534 | scarray, p->sc_size, C56_66); | |
8535 | else | |
8536 | have_seeprom = read_seeprom(p, (p->flags & (AHC_CHNLB|AHC_CHNLC)), | |
8537 | scarray, p->sc_size, C46); | |
8538 | } | |
8539 | if (!have_seeprom) | |
8540 | { | |
8541 | p->sc_size = 128; | |
8542 | have_seeprom = read_seeprom(p, 4*(p->flags & (AHC_CHNLB|AHC_CHNLC)), | |
8543 | scarray, p->sc_size, p->sc_type); | |
8544 | if (!have_seeprom) | |
8545 | { | |
8546 | if(p->sc_type == C46) | |
8547 | have_seeprom = read_seeprom(p, 4*(p->flags & (AHC_CHNLB|AHC_CHNLC)), | |
8548 | scarray, p->sc_size, C56_66); | |
8549 | else | |
8550 | have_seeprom = read_seeprom(p, 4*(p->flags & (AHC_CHNLB|AHC_CHNLC)), | |
8551 | scarray, p->sc_size, C46); | |
8552 | } | |
8553 | } | |
8554 | break; | |
8555 | } | |
8556 | ||
8557 | if (!have_seeprom) | |
8558 | { | |
8559 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
8560 | { | |
8561 | printk("\naic7xxx: No SEEPROM available.\n"); | |
8562 | } | |
8563 | p->flags |= AHC_NEWEEPROM_FMT; | |
8564 | if (aic_inb(p, SCSISEQ) == 0) | |
8565 | { | |
8566 | p->flags |= AHC_USEDEFAULTS; | |
8567 | p->flags &= ~AHC_BIOS_ENABLED; | |
8568 | p->scsi_id = p->scsi_id_b = 7; | |
8569 | *sxfrctl1 |= STPWEN; | |
8570 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
8571 | { | |
8572 | printk("aic7xxx: Using default values.\n"); | |
8573 | } | |
8574 | } | |
8575 | else if (aic7xxx_verbose & VERBOSE_PROBE2) | |
8576 | { | |
8577 | printk("aic7xxx: Using leftover BIOS values.\n"); | |
8578 | } | |
8579 | if ( ((p->chip & ~AHC_CHIPID_MASK) == AHC_PCI) && (*sxfrctl1 & STPWEN) ) | |
8580 | { | |
8581 | p->flags |= AHC_TERM_ENB_SE_LOW | AHC_TERM_ENB_SE_HIGH; | |
8582 | sc->adapter_control &= ~CFAUTOTERM; | |
8583 | sc->adapter_control |= CFSTERM | CFWSTERM | CFLVDSTERM; | |
8584 | } | |
8585 | if (aic7xxx_extended) | |
8586 | p->flags |= (AHC_EXTEND_TRANS_A | AHC_EXTEND_TRANS_B); | |
8587 | else | |
8588 | p->flags &= ~(AHC_EXTEND_TRANS_A | AHC_EXTEND_TRANS_B); | |
8589 | } | |
8590 | else | |
8591 | { | |
8592 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
8593 | { | |
8594 | printk("done\n"); | |
8595 | } | |
8596 | ||
8597 | /* | |
8598 | * Note things in our flags | |
8599 | */ | |
8600 | p->flags |= AHC_SEEPROM_FOUND; | |
8601 | ||
8602 | /* | |
8603 | * Update the settings in sxfrctl1 to match the termination settings. | |
8604 | */ | |
8605 | *sxfrctl1 = 0; | |
8606 | ||
8607 | /* | |
8608 | * Get our SCSI ID from the SEEPROM setting... | |
8609 | */ | |
8610 | p->scsi_id = (sc->brtime_id & CFSCSIID); | |
8611 | ||
8612 | /* | |
8613 | * First process the settings that are different between the VLB | |
8614 | * and PCI adapter seeproms. | |
8615 | */ | |
8616 | if ((p->chip & AHC_CHIPID_MASK) == AHC_AIC7770) | |
8617 | { | |
8618 | /* VLB adapter seeproms */ | |
8619 | if (sc->bios_control & CF284XEXTEND) | |
8620 | p->flags |= AHC_EXTEND_TRANS_A; | |
8621 | ||
8622 | if (sc->adapter_control & CF284XSTERM) | |
8623 | { | |
8624 | *sxfrctl1 |= STPWEN; | |
8625 | p->flags |= AHC_TERM_ENB_SE_LOW | AHC_TERM_ENB_SE_HIGH; | |
8626 | } | |
8627 | } | |
8628 | else | |
8629 | { | |
8630 | /* PCI adapter seeproms */ | |
8631 | if (sc->bios_control & CFEXTEND) | |
8632 | p->flags |= AHC_EXTEND_TRANS_A; | |
8633 | if (sc->bios_control & CFBIOSEN) | |
8634 | p->flags |= AHC_BIOS_ENABLED; | |
8635 | else | |
8636 | p->flags &= ~AHC_BIOS_ENABLED; | |
8637 | ||
8638 | if (sc->adapter_control & CFSTERM) | |
8639 | { | |
8640 | *sxfrctl1 |= STPWEN; | |
8641 | p->flags |= AHC_TERM_ENB_SE_LOW | AHC_TERM_ENB_SE_HIGH; | |
8642 | } | |
8643 | } | |
8644 | memcpy(&p->sc, sc, sizeof(struct seeprom_config)); | |
8645 | } | |
8646 | ||
8647 | p->discenable = 0; | |
8648 | ||
8649 | /* | |
8650 | * Limit to 16 targets just in case. The 2842 for one is known to | |
8651 | * blow the max_targets setting, future cards might also. | |
8652 | */ | |
8653 | max_targets = ((p->features & (AHC_TWIN | AHC_WIDE)) ? 16 : 8); | |
8654 | ||
8655 | if (have_seeprom) | |
8656 | { | |
8657 | for (i = 0; i < max_targets; i++) | |
8658 | { | |
8659 | if( ((p->features & AHC_ULTRA) && | |
8660 | !(sc->adapter_control & CFULTRAEN) && | |
8661 | (sc->device_flags[i] & CFSYNCHISULTRA)) || | |
8662 | (sc->device_flags[i] & CFNEWULTRAFORMAT) ) | |
8663 | { | |
8664 | p->flags |= AHC_NEWEEPROM_FMT; | |
8665 | break; | |
8666 | } | |
8667 | } | |
8668 | } | |
8669 | ||
8670 | for (i = 0; i < max_targets; i++) | |
8671 | { | |
8672 | mask = (0x01 << i); | |
8673 | if (!have_seeprom) | |
8674 | { | |
8675 | if (aic_inb(p, SCSISEQ) != 0) | |
8676 | { | |
8677 | /* | |
8678 | * OK...the BIOS set things up and left behind the settings we need. | |
8679 | * Just make our sc->device_flags[i] entry match what the card has | |
8680 | * set for this device. | |
8681 | */ | |
8682 | p->discenable = | |
8683 | ~(aic_inb(p, DISC_DSB) | (aic_inb(p, DISC_DSB + 1) << 8) ); | |
8684 | p->ultraenb = | |
8685 | (aic_inb(p, ULTRA_ENB) | (aic_inb(p, ULTRA_ENB + 1) << 8) ); | |
8686 | sc->device_flags[i] = (p->discenable & mask) ? CFDISC : 0; | |
8687 | if (aic_inb(p, TARG_SCSIRATE + i) & WIDEXFER) | |
8688 | sc->device_flags[i] |= CFWIDEB; | |
8689 | if (p->features & AHC_ULTRA2) | |
8690 | { | |
8691 | if (aic_inb(p, TARG_OFFSET + i)) | |
8692 | { | |
8693 | sc->device_flags[i] |= CFSYNCH; | |
8694 | sc->device_flags[i] |= (aic_inb(p, TARG_SCSIRATE + i) & 0x07); | |
8695 | if ( (aic_inb(p, TARG_SCSIRATE + i) & 0x18) == 0x18 ) | |
8696 | sc->device_flags[i] |= CFSYNCHISULTRA; | |
8697 | } | |
8698 | } | |
8699 | else | |
8700 | { | |
8701 | if (aic_inb(p, TARG_SCSIRATE + i) & ~WIDEXFER) | |
8702 | { | |
8703 | sc->device_flags[i] |= CFSYNCH; | |
8704 | if (p->features & AHC_ULTRA) | |
8705 | sc->device_flags[i] |= ((p->ultraenb & mask) ? | |
8706 | CFSYNCHISULTRA : 0); | |
8707 | } | |
8708 | } | |
8709 | } | |
8710 | else | |
8711 | { | |
8712 | /* | |
8713 | * Assume the BIOS has NOT been run on this card and nothing between | |
8714 | * the card and the devices is configured yet. | |
8715 | */ | |
8716 | sc->device_flags[i] = CFDISC; | |
8717 | if (p->features & AHC_WIDE) | |
8718 | sc->device_flags[i] |= CFWIDEB; | |
8719 | if (p->features & AHC_ULTRA3) | |
8720 | sc->device_flags[i] |= 2; | |
8721 | else if (p->features & AHC_ULTRA2) | |
8722 | sc->device_flags[i] |= 3; | |
8723 | else if (p->features & AHC_ULTRA) | |
8724 | sc->device_flags[i] |= CFSYNCHISULTRA; | |
8725 | sc->device_flags[i] |= CFSYNCH; | |
8726 | aic_outb(p, 0, TARG_SCSIRATE + i); | |
8727 | if (p->features & AHC_ULTRA2) | |
8728 | aic_outb(p, 0, TARG_OFFSET + i); | |
8729 | } | |
8730 | } | |
8731 | if (sc->device_flags[i] & CFDISC) | |
8732 | { | |
8733 | p->discenable |= mask; | |
8734 | } | |
8735 | if (p->flags & AHC_NEWEEPROM_FMT) | |
8736 | { | |
8737 | if ( !(p->features & AHC_ULTRA2) ) | |
8738 | { | |
8739 | /* | |
8740 | * I know of two different Ultra BIOSes that do this differently. | |
8741 | * One on the Gigabyte 6BXU mb that wants flags[i] & CFXFER to | |
8742 | * be == to 0x03 and SYNCHISULTRA to be true to mean 40MByte/s | |
8743 | * while on the IBM Netfinity 5000 they want the same thing | |
8744 | * to be something else, while flags[i] & CFXFER == 0x03 and | |
8745 | * SYNCHISULTRA false should be 40MByte/s. So, we set both to | |
8746 | * 40MByte/s and the lower speeds be damned. People will have | |
8747 | * to select around the conversely mapped lower speeds in order | |
8748 | * to select lower speeds on these boards. | |
8749 | */ | |
8750 | if ( (sc->device_flags[i] & CFNEWULTRAFORMAT) && | |
8751 | ((sc->device_flags[i] & CFXFER) == 0x03) ) | |
8752 | { | |
8753 | sc->device_flags[i] &= ~CFXFER; | |
8754 | sc->device_flags[i] |= CFSYNCHISULTRA; | |
8755 | } | |
8756 | if (sc->device_flags[i] & CFSYNCHISULTRA) | |
8757 | { | |
8758 | p->ultraenb |= mask; | |
8759 | } | |
8760 | } | |
8761 | else if ( !(sc->device_flags[i] & CFNEWULTRAFORMAT) && | |
8762 | (p->features & AHC_ULTRA2) && | |
8763 | (sc->device_flags[i] & CFSYNCHISULTRA) ) | |
8764 | { | |
8765 | p->ultraenb |= mask; | |
8766 | } | |
8767 | } | |
8768 | else if (sc->adapter_control & CFULTRAEN) | |
8769 | { | |
8770 | p->ultraenb |= mask; | |
8771 | } | |
8772 | if ( (sc->device_flags[i] & CFSYNCH) == 0) | |
8773 | { | |
8774 | sc->device_flags[i] &= ~CFXFER; | |
8775 | p->ultraenb &= ~mask; | |
8776 | p->user[i].offset = 0; | |
8777 | p->user[i].period = 0; | |
8778 | p->user[i].options = 0; | |
8779 | } | |
8780 | else | |
8781 | { | |
8782 | if (p->features & AHC_ULTRA3) | |
8783 | { | |
8784 | p->user[i].offset = MAX_OFFSET_ULTRA2; | |
8785 | if( (sc->device_flags[i] & CFXFER) < 0x03 ) | |
8786 | { | |
8787 | scsirate = (sc->device_flags[i] & CFXFER); | |
8788 | p->user[i].options = MSG_EXT_PPR_OPTION_DT_CRC; | |
8789 | } | |
8790 | else | |
8791 | { | |
8792 | scsirate = (sc->device_flags[i] & CFXFER) | | |
8793 | ((p->ultraenb & mask) ? 0x18 : 0x10); | |
8794 | p->user[i].options = 0; | |
8795 | } | |
8796 | p->user[i].period = aic7xxx_find_period(p, scsirate, | |
8797 | AHC_SYNCRATE_ULTRA3); | |
8798 | } | |
8799 | else if (p->features & AHC_ULTRA2) | |
8800 | { | |
8801 | p->user[i].offset = MAX_OFFSET_ULTRA2; | |
8802 | scsirate = (sc->device_flags[i] & CFXFER) | | |
8803 | ((p->ultraenb & mask) ? 0x18 : 0x10); | |
8804 | p->user[i].options = 0; | |
8805 | p->user[i].period = aic7xxx_find_period(p, scsirate, | |
8806 | AHC_SYNCRATE_ULTRA2); | |
8807 | } | |
8808 | else | |
8809 | { | |
8810 | scsirate = (sc->device_flags[i] & CFXFER) << 4; | |
8811 | p->user[i].options = 0; | |
8812 | p->user[i].offset = MAX_OFFSET_8BIT; | |
8813 | if (p->features & AHC_ULTRA) | |
8814 | { | |
8815 | short ultraenb; | |
8816 | ultraenb = aic_inb(p, ULTRA_ENB) | | |
8817 | (aic_inb(p, ULTRA_ENB + 1) << 8); | |
8818 | p->user[i].period = aic7xxx_find_period(p, scsirate, | |
8819 | (p->ultraenb & mask) ? | |
8820 | AHC_SYNCRATE_ULTRA : | |
8821 | AHC_SYNCRATE_FAST); | |
8822 | } | |
8823 | else | |
8824 | p->user[i].period = aic7xxx_find_period(p, scsirate, | |
8825 | AHC_SYNCRATE_FAST); | |
8826 | } | |
8827 | } | |
8828 | if ( (sc->device_flags[i] & CFWIDEB) && (p->features & AHC_WIDE) ) | |
8829 | { | |
8830 | p->user[i].width = MSG_EXT_WDTR_BUS_16_BIT; | |
8831 | } | |
8832 | else | |
8833 | { | |
8834 | p->user[i].width = MSG_EXT_WDTR_BUS_8_BIT; | |
8835 | } | |
8836 | } | |
8837 | aic_outb(p, ~(p->discenable & 0xFF), DISC_DSB); | |
8838 | aic_outb(p, ~((p->discenable >> 8) & 0xFF), DISC_DSB + 1); | |
8839 | ||
8840 | /* | |
8841 | * We set the p->ultraenb from the SEEPROM to begin with, but now we make | |
8842 | * it match what is already down in the card. If we are doing a reset | |
8843 | * on the card then this will get put back to a default state anyway. | |
8844 | * This allows us to not have to pre-emptively negotiate when using the | |
8845 | * no_reset option. | |
8846 | */ | |
8847 | if (p->features & AHC_ULTRA) | |
8848 | p->ultraenb = aic_inb(p, ULTRA_ENB) | (aic_inb(p, ULTRA_ENB + 1) << 8); | |
8849 | ||
8850 | ||
8851 | scsi_conf = (p->scsi_id & HSCSIID); | |
8852 | ||
8853 | if(have_seeprom) | |
8854 | { | |
8855 | p->adapter_control = sc->adapter_control; | |
8856 | p->bios_control = sc->bios_control; | |
8857 | ||
8858 | switch (p->chip & AHC_CHIPID_MASK) | |
8859 | { | |
8860 | case AHC_AIC7895: | |
8861 | case AHC_AIC7896: | |
8862 | case AHC_AIC7899: | |
8863 | if (p->adapter_control & CFBPRIMARY) | |
8864 | p->flags |= AHC_CHANNEL_B_PRIMARY; | |
8865 | default: | |
8866 | break; | |
8867 | } | |
8868 | ||
8869 | if (sc->adapter_control & CFSPARITY) | |
8870 | scsi_conf |= ENSPCHK; | |
8871 | } | |
8872 | else | |
8873 | { | |
8874 | scsi_conf |= ENSPCHK | RESET_SCSI; | |
8875 | } | |
8876 | ||
8877 | /* | |
8878 | * Only set the SCSICONF and SCSICONF + 1 registers if we are a PCI card. | |
8879 | * The 2842 and 2742 cards already have these registers set and we don't | |
8880 | * want to muck with them since we don't set all the bits they do. | |
8881 | */ | |
8882 | if ( (p->chip & ~AHC_CHIPID_MASK) == AHC_PCI ) | |
8883 | { | |
8884 | /* Set the host ID */ | |
8885 | aic_outb(p, scsi_conf, SCSICONF); | |
8886 | /* In case we are a wide card */ | |
8887 | aic_outb(p, p->scsi_id, SCSICONF + 1); | |
8888 | } | |
8889 | } | |
8890 | ||
8891 | /*+F************************************************************************* | |
8892 | * Function: | |
8893 | * aic7xxx_configure_bugs | |
8894 | * | |
8895 | * Description: | |
8896 | * Take the card passed in and set the appropriate bug flags based upon | |
8897 | * the card model. Also make any changes needed to device registers or | |
8898 | * PCI registers while we are here. | |
8899 | *-F*************************************************************************/ | |
8900 | static void | |
8901 | aic7xxx_configure_bugs(struct aic7xxx_host *p) | |
8902 | { | |
8903 | unsigned short tmp_word; | |
8904 | ||
8905 | switch(p->chip & AHC_CHIPID_MASK) | |
8906 | { | |
8907 | case AHC_AIC7860: | |
8908 | p->bugs |= AHC_BUG_PCI_2_1_RETRY; | |
8909 | /* fall through */ | |
8910 | case AHC_AIC7850: | |
8911 | case AHC_AIC7870: | |
8912 | p->bugs |= AHC_BUG_TMODE_WIDEODD | AHC_BUG_CACHETHEN | AHC_BUG_PCI_MWI; | |
8913 | break; | |
8914 | case AHC_AIC7880: | |
8915 | p->bugs |= AHC_BUG_TMODE_WIDEODD | AHC_BUG_PCI_2_1_RETRY | | |
8916 | AHC_BUG_CACHETHEN | AHC_BUG_PCI_MWI; | |
8917 | break; | |
8918 | case AHC_AIC7890: | |
8919 | p->bugs |= AHC_BUG_AUTOFLUSH | AHC_BUG_CACHETHEN; | |
8920 | break; | |
8921 | case AHC_AIC7892: | |
8922 | p->bugs |= AHC_BUG_SCBCHAN_UPLOAD; | |
8923 | break; | |
8924 | case AHC_AIC7895: | |
8925 | p->bugs |= AHC_BUG_TMODE_WIDEODD | AHC_BUG_PCI_2_1_RETRY | | |
8926 | AHC_BUG_CACHETHEN | AHC_BUG_PCI_MWI; | |
8927 | break; | |
8928 | case AHC_AIC7896: | |
8929 | p->bugs |= AHC_BUG_CACHETHEN_DIS; | |
8930 | break; | |
8931 | case AHC_AIC7899: | |
8932 | p->bugs |= AHC_BUG_SCBCHAN_UPLOAD; | |
8933 | break; | |
8934 | default: | |
8935 | /* Nothing to do */ | |
8936 | break; | |
8937 | } | |
8938 | ||
8939 | /* | |
8940 | * Now handle the bugs that require PCI register or card register tweaks | |
8941 | */ | |
8942 | pci_read_config_word(p->pdev, PCI_COMMAND, &tmp_word); | |
8943 | if(p->bugs & AHC_BUG_PCI_MWI) | |
8944 | { | |
8945 | tmp_word &= ~PCI_COMMAND_INVALIDATE; | |
8946 | } | |
8947 | else | |
8948 | { | |
8949 | tmp_word |= PCI_COMMAND_INVALIDATE; | |
8950 | } | |
8951 | pci_write_config_word(p->pdev, PCI_COMMAND, tmp_word); | |
8952 | ||
8953 | if(p->bugs & AHC_BUG_CACHETHEN) | |
8954 | { | |
8955 | aic_outb(p, aic_inb(p, DSCOMMAND0) & ~CACHETHEN, DSCOMMAND0); | |
8956 | } | |
8957 | else if (p->bugs & AHC_BUG_CACHETHEN_DIS) | |
8958 | { | |
8959 | aic_outb(p, aic_inb(p, DSCOMMAND0) | CACHETHEN, DSCOMMAND0); | |
8960 | } | |
8961 | ||
8962 | return; | |
8963 | } | |
8964 | ||
8965 | ||
8966 | /*+F************************************************************************* | |
8967 | * Function: | |
8968 | * aic7xxx_detect | |
8969 | * | |
8970 | * Description: | |
8971 | * Try to detect and register an Adaptec 7770 or 7870 SCSI controller. | |
8972 | * | |
8973 | * XXX - This should really be called aic7xxx_probe(). A sequence of | |
8974 | * probe(), attach()/detach(), and init() makes more sense than | |
8975 | * one do-it-all function. This may be useful when (and if) the | |
8976 | * mid-level SCSI code is overhauled. | |
8977 | *-F*************************************************************************/ | |
8978 | static int | |
d0be4a7d | 8979 | aic7xxx_detect(struct scsi_host_template *template) |
1da177e4 LT |
8980 | { |
8981 | struct aic7xxx_host *temp_p = NULL; | |
8982 | struct aic7xxx_host *current_p = NULL; | |
8983 | struct aic7xxx_host *list_p = NULL; | |
8984 | int found = 0; | |
8985 | #if defined(__i386__) || defined(__alpha__) | |
8986 | ahc_flag_type flags = 0; | |
8987 | int type; | |
8988 | #endif | |
8989 | unsigned char sxfrctl1; | |
8990 | #if defined(__i386__) || defined(__alpha__) | |
8991 | unsigned char hcntrl, hostconf; | |
8992 | unsigned int slot, base; | |
8993 | #endif | |
8994 | ||
8995 | #ifdef MODULE | |
8996 | /* | |
8997 | * If we are called as a module, the aic7xxx pointer may not be null | |
8998 | * and it would point to our bootup string, just like on the lilo | |
8999 | * command line. IF not NULL, then process this config string with | |
9000 | * aic7xxx_setup | |
9001 | */ | |
9002 | if(aic7xxx) | |
9003 | aic7xxx_setup(aic7xxx); | |
9004 | #endif | |
9005 | ||
9006 | template->proc_name = "aic7xxx"; | |
9007 | template->sg_tablesize = AIC7XXX_MAX_SG; | |
9008 | ||
9009 | ||
9010 | #ifdef CONFIG_PCI | |
9011 | /* | |
9012 | * PCI-bus probe. | |
9013 | */ | |
9014 | { | |
9015 | static struct | |
9016 | { | |
9017 | unsigned short vendor_id; | |
9018 | unsigned short device_id; | |
9019 | ahc_chip chip; | |
9020 | ahc_flag_type flags; | |
9021 | ahc_feature features; | |
9022 | int board_name_index; | |
9023 | unsigned short seeprom_size; | |
9024 | unsigned short seeprom_type; | |
9025 | } const aic_pdevs[] = { | |
9026 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7810, AHC_NONE, | |
9027 | AHC_FNONE, AHC_FENONE, 1, | |
9028 | 32, C46 }, | |
9029 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7850, AHC_AIC7850, | |
9030 | AHC_PAGESCBS, AHC_AIC7850_FE, 5, | |
9031 | 32, C46 }, | |
9032 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7855, AHC_AIC7850, | |
9033 | AHC_PAGESCBS, AHC_AIC7850_FE, 6, | |
9034 | 32, C46 }, | |
9035 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7821, AHC_AIC7860, | |
9036 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9037 | AHC_AIC7860_FE, 7, | |
9038 | 32, C46 }, | |
9039 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_3860, AHC_AIC7860, | |
9040 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9041 | AHC_AIC7860_FE, 7, | |
9042 | 32, C46 }, | |
9043 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_38602, AHC_AIC7860, | |
9044 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9045 | AHC_AIC7860_FE, 7, | |
9046 | 32, C46 }, | |
9047 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_38602, AHC_AIC7860, | |
9048 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9049 | AHC_AIC7860_FE, 7, | |
9050 | 32, C46 }, | |
9051 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7860, AHC_AIC7860, | |
9052 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MOTHERBOARD, | |
9053 | AHC_AIC7860_FE, 7, | |
9054 | 32, C46 }, | |
9055 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7861, AHC_AIC7860, | |
9056 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9057 | AHC_AIC7860_FE, 8, | |
9058 | 32, C46 }, | |
9059 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7870, AHC_AIC7870, | |
9060 | AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MOTHERBOARD, | |
9061 | AHC_AIC7870_FE, 9, | |
9062 | 32, C46 }, | |
9063 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7871, AHC_AIC7870, | |
9064 | AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7870_FE, 10, | |
9065 | 32, C46 }, | |
9066 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7872, AHC_AIC7870, | |
9067 | AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL, | |
9068 | AHC_AIC7870_FE, 11, | |
9069 | 32, C56_66 }, | |
9070 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7873, AHC_AIC7870, | |
9071 | AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL, | |
9072 | AHC_AIC7870_FE, 12, | |
9073 | 32, C56_66 }, | |
9074 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7874, AHC_AIC7870, | |
9075 | AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7870_FE, 13, | |
9076 | 32, C46 }, | |
9077 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7880, AHC_AIC7880, | |
9078 | AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MOTHERBOARD, | |
9079 | AHC_AIC7880_FE, 14, | |
9080 | 32, C46 }, | |
9081 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7881, AHC_AIC7880, | |
9082 | AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 15, | |
9083 | 32, C46 }, | |
9084 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7882, AHC_AIC7880, | |
9085 | AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL, | |
9086 | AHC_AIC7880_FE, 16, | |
9087 | 32, C56_66 }, | |
9088 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7883, AHC_AIC7880, | |
9089 | AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL, | |
9090 | AHC_AIC7880_FE, 17, | |
9091 | 32, C56_66 }, | |
9092 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7884, AHC_AIC7880, | |
9093 | AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 18, | |
9094 | 32, C46 }, | |
9095 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7885, AHC_AIC7880, | |
9096 | AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 18, | |
9097 | 32, C46 }, | |
9098 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7886, AHC_AIC7880, | |
9099 | AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 18, | |
9100 | 32, C46 }, | |
9101 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7887, AHC_AIC7880, | |
9102 | AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE | AHC_NEW_AUTOTERM, 19, | |
9103 | 32, C46 }, | |
9104 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7888, AHC_AIC7880, | |
9105 | AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 18, | |
9106 | 32, C46 }, | |
9107 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7895, AHC_AIC7895, | |
9108 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL, | |
9109 | AHC_AIC7895_FE, 20, | |
9110 | 32, C56_66 }, | |
9111 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7890, AHC_AIC7890, | |
9112 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9113 | AHC_AIC7890_FE, 21, | |
9114 | 32, C46 }, | |
9115 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7890B, AHC_AIC7890, | |
9116 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9117 | AHC_AIC7890_FE, 21, | |
9118 | 32, C46 }, | |
9119 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_2930U2, AHC_AIC7890, | |
9120 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9121 | AHC_AIC7890_FE, 22, | |
9122 | 32, C46 }, | |
9123 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_2940U2, AHC_AIC7890, | |
9124 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9125 | AHC_AIC7890_FE, 23, | |
9126 | 32, C46 }, | |
9127 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7896, AHC_AIC7896, | |
9128 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL, | |
9129 | AHC_AIC7896_FE, 24, | |
9130 | 32, C56_66 }, | |
9131 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_3940U2, AHC_AIC7896, | |
9132 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL, | |
9133 | AHC_AIC7896_FE, 25, | |
9134 | 32, C56_66 }, | |
9135 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_3950U2D, AHC_AIC7896, | |
9136 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL, | |
9137 | AHC_AIC7896_FE, 26, | |
9138 | 32, C56_66 }, | |
9139 | {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_1480A, AHC_AIC7860, | |
9140 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_NO_STPWEN, | |
9141 | AHC_AIC7860_FE, 27, | |
9142 | 32, C46 }, | |
9143 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7892A, AHC_AIC7892, | |
9144 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9145 | AHC_AIC7892_FE, 28, | |
9146 | 32, C46 }, | |
9147 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7892B, AHC_AIC7892, | |
9148 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9149 | AHC_AIC7892_FE, 28, | |
9150 | 32, C46 }, | |
9151 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7892D, AHC_AIC7892, | |
9152 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9153 | AHC_AIC7892_FE, 28, | |
9154 | 32, C46 }, | |
9155 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7892P, AHC_AIC7892, | |
9156 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED, | |
9157 | AHC_AIC7892_FE, 28, | |
9158 | 32, C46 }, | |
9159 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7899A, AHC_AIC7899, | |
9160 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL, | |
9161 | AHC_AIC7899_FE, 29, | |
9162 | 32, C56_66 }, | |
9163 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7899B, AHC_AIC7899, | |
9164 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL, | |
9165 | AHC_AIC7899_FE, 29, | |
9166 | 32, C56_66 }, | |
9167 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7899D, AHC_AIC7899, | |
9168 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL, | |
9169 | AHC_AIC7899_FE, 29, | |
9170 | 32, C56_66 }, | |
9171 | {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7899P, AHC_AIC7899, | |
9172 | AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL, | |
9173 | AHC_AIC7899_FE, 29, | |
9174 | 32, C56_66 }, | |
9175 | }; | |
9176 | ||
9177 | unsigned short command; | |
9178 | unsigned int devconfig, i, oldverbose; | |
9179 | struct pci_dev *pdev = NULL; | |
9180 | ||
9181 | for (i = 0; i < ARRAY_SIZE(aic_pdevs); i++) | |
9182 | { | |
9183 | pdev = NULL; | |
a07f3537 | 9184 | while ((pdev = pci_get_device(aic_pdevs[i].vendor_id, |
1da177e4 LT |
9185 | aic_pdevs[i].device_id, |
9186 | pdev))) { | |
9187 | if (pci_enable_device(pdev)) | |
9188 | continue; | |
9189 | if ( i == 0 ) /* We found one, but it's the 7810 RAID cont. */ | |
9190 | { | |
9191 | if (aic7xxx_verbose & (VERBOSE_PROBE|VERBOSE_PROBE2)) | |
9192 | { | |
9193 | printk(KERN_INFO "aic7xxx: The 7810 RAID controller is not " | |
9194 | "supported by\n"); | |
9195 | printk(KERN_INFO " this driver, we are ignoring it.\n"); | |
9196 | } | |
9197 | } | |
bbfbbbc1 | 9198 | else if ( (temp_p = kzalloc(sizeof(struct aic7xxx_host), |
1da177e4 LT |
9199 | GFP_ATOMIC)) != NULL ) |
9200 | { | |
1da177e4 LT |
9201 | temp_p->chip = aic_pdevs[i].chip | AHC_PCI; |
9202 | temp_p->flags = aic_pdevs[i].flags; | |
9203 | temp_p->features = aic_pdevs[i].features; | |
9204 | temp_p->board_name_index = aic_pdevs[i].board_name_index; | |
9205 | temp_p->sc_size = aic_pdevs[i].seeprom_size; | |
9206 | temp_p->sc_type = aic_pdevs[i].seeprom_type; | |
9207 | ||
9208 | /* | |
9209 | * Read sundry information from PCI BIOS. | |
9210 | */ | |
9211 | temp_p->irq = pdev->irq; | |
9212 | temp_p->pdev = pdev; | |
9213 | temp_p->pci_bus = pdev->bus->number; | |
9214 | temp_p->pci_device_fn = pdev->devfn; | |
9215 | temp_p->base = pci_resource_start(pdev, 0); | |
9216 | temp_p->mbase = pci_resource_start(pdev, 1); | |
9217 | current_p = list_p; | |
9218 | while(current_p && temp_p) | |
9219 | { | |
9220 | if ( ((current_p->pci_bus == temp_p->pci_bus) && | |
9221 | (current_p->pci_device_fn == temp_p->pci_device_fn)) || | |
9222 | (temp_p->base && (current_p->base == temp_p->base)) || | |
9223 | (temp_p->mbase && (current_p->mbase == temp_p->mbase)) ) | |
9224 | { | |
9225 | /* duplicate PCI entry, skip it */ | |
9226 | kfree(temp_p); | |
9227 | temp_p = NULL; | |
9228 | continue; | |
9229 | } | |
9230 | current_p = current_p->next; | |
9231 | } | |
9232 | if(pci_request_regions(temp_p->pdev, "aic7xxx")) | |
9233 | { | |
9234 | printk("aic7xxx: <%s> at PCI %d/%d/%d\n", | |
9235 | board_names[aic_pdevs[i].board_name_index], | |
9236 | temp_p->pci_bus, | |
9237 | PCI_SLOT(temp_p->pci_device_fn), | |
9238 | PCI_FUNC(temp_p->pci_device_fn)); | |
9239 | printk("aic7xxx: I/O ports already in use, ignoring.\n"); | |
9240 | kfree(temp_p); | |
9241 | continue; | |
9242 | } | |
9243 | ||
9244 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
9245 | printk("aic7xxx: <%s> at PCI %d/%d\n", | |
9246 | board_names[aic_pdevs[i].board_name_index], | |
9247 | PCI_SLOT(pdev->devfn), | |
9248 | PCI_FUNC(pdev->devfn)); | |
9249 | pci_read_config_word(pdev, PCI_COMMAND, &command); | |
9250 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
9251 | { | |
9252 | printk("aic7xxx: Initial PCI_COMMAND value was 0x%x\n", | |
9253 | (int)command); | |
9254 | } | |
9255 | #ifdef AIC7XXX_STRICT_PCI_SETUP | |
9256 | command |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY | | |
9257 | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO; | |
9258 | #else | |
9259 | command |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO; | |
9260 | #endif | |
9261 | command &= ~PCI_COMMAND_INVALIDATE; | |
9262 | if (aic7xxx_pci_parity == 0) | |
9263 | command &= ~(PCI_COMMAND_SERR | PCI_COMMAND_PARITY); | |
9264 | pci_write_config_word(pdev, PCI_COMMAND, command); | |
9265 | #ifdef AIC7XXX_STRICT_PCI_SETUP | |
9266 | pci_read_config_dword(pdev, DEVCONFIG, &devconfig); | |
9267 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
9268 | { | |
9269 | printk("aic7xxx: Initial DEVCONFIG value was 0x%x\n", devconfig); | |
9270 | } | |
9271 | devconfig |= 0x80000040; | |
9272 | pci_write_config_dword(pdev, DEVCONFIG, devconfig); | |
9273 | #endif /* AIC7XXX_STRICT_PCI_SETUP */ | |
9274 | ||
9275 | temp_p->unpause = INTEN; | |
9276 | temp_p->pause = temp_p->unpause | PAUSE; | |
9277 | if ( ((temp_p->base == 0) && | |
9278 | (temp_p->mbase == 0)) || | |
9279 | (temp_p->irq == 0) ) | |
9280 | { | |
9281 | printk("aic7xxx: <%s> at PCI %d/%d/%d\n", | |
9282 | board_names[aic_pdevs[i].board_name_index], | |
9283 | temp_p->pci_bus, | |
9284 | PCI_SLOT(temp_p->pci_device_fn), | |
9285 | PCI_FUNC(temp_p->pci_device_fn)); | |
9286 | printk("aic7xxx: Controller disabled by BIOS, ignoring.\n"); | |
9287 | goto skip_pci_controller; | |
9288 | } | |
9289 | ||
9290 | #ifdef MMAPIO | |
9291 | if ( !(temp_p->base) || !(temp_p->flags & AHC_MULTI_CHANNEL) || | |
9292 | ((temp_p->chip != (AHC_AIC7870 | AHC_PCI)) && | |
9293 | (temp_p->chip != (AHC_AIC7880 | AHC_PCI))) ) | |
9294 | { | |
9295 | temp_p->maddr = ioremap_nocache(temp_p->mbase, 256); | |
9296 | if(temp_p->maddr) | |
9297 | { | |
9298 | /* | |
9299 | * We need to check the I/O with the MMAPed address. Some machines | |
9300 | * simply fail to work with MMAPed I/O and certain controllers. | |
9301 | */ | |
9302 | if(aic_inb(temp_p, HCNTRL) == 0xff) | |
9303 | { | |
9304 | /* | |
9305 | * OK.....we failed our test....go back to programmed I/O | |
9306 | */ | |
9307 | printk(KERN_INFO "aic7xxx: <%s> at PCI %d/%d/%d\n", | |
9308 | board_names[aic_pdevs[i].board_name_index], | |
9309 | temp_p->pci_bus, | |
9310 | PCI_SLOT(temp_p->pci_device_fn), | |
9311 | PCI_FUNC(temp_p->pci_device_fn)); | |
9312 | printk(KERN_INFO "aic7xxx: MMAPed I/O failed, reverting to " | |
9313 | "Programmed I/O.\n"); | |
9314 | iounmap(temp_p->maddr); | |
9315 | temp_p->maddr = NULL; | |
9316 | if(temp_p->base == 0) | |
9317 | { | |
9318 | printk("aic7xxx: <%s> at PCI %d/%d/%d\n", | |
9319 | board_names[aic_pdevs[i].board_name_index], | |
9320 | temp_p->pci_bus, | |
9321 | PCI_SLOT(temp_p->pci_device_fn), | |
9322 | PCI_FUNC(temp_p->pci_device_fn)); | |
9323 | printk("aic7xxx: Controller disabled by BIOS, ignoring.\n"); | |
9324 | goto skip_pci_controller; | |
9325 | } | |
9326 | } | |
9327 | } | |
9328 | } | |
9329 | #endif | |
9330 | ||
9331 | /* | |
9332 | * We HAVE to make sure the first pause_sequencer() and all other | |
9333 | * subsequent I/O that isn't PCI config space I/O takes place | |
9334 | * after the MMAPed I/O region is configured and tested. The | |
9335 | * problem is the PowerPC architecture that doesn't support | |
9336 | * programmed I/O at all, so we have to have the MMAP I/O set up | |
9337 | * for this pause to even work on those machines. | |
9338 | */ | |
9339 | pause_sequencer(temp_p); | |
9340 | ||
9341 | /* | |
9342 | * Clear out any pending PCI error status messages. Also set | |
9343 | * verbose to 0 so that we don't emit strange PCI error messages | |
9344 | * while cleaning out the current status bits. | |
9345 | */ | |
9346 | oldverbose = aic7xxx_verbose; | |
9347 | aic7xxx_verbose = 0; | |
9348 | aic7xxx_pci_intr(temp_p); | |
9349 | aic7xxx_verbose = oldverbose; | |
9350 | ||
9351 | temp_p->bios_address = 0; | |
9352 | ||
9353 | /* | |
9354 | * Remember how the card was setup in case there is no seeprom. | |
9355 | */ | |
9356 | if (temp_p->features & AHC_ULTRA2) | |
9357 | temp_p->scsi_id = aic_inb(temp_p, SCSIID_ULTRA2) & OID; | |
9358 | else | |
9359 | temp_p->scsi_id = aic_inb(temp_p, SCSIID) & OID; | |
9360 | /* | |
9361 | * Get current termination setting | |
9362 | */ | |
9363 | sxfrctl1 = aic_inb(temp_p, SXFRCTL1); | |
9364 | ||
9365 | if (aic7xxx_chip_reset(temp_p) == -1) | |
9366 | { | |
9367 | goto skip_pci_controller; | |
9368 | } | |
9369 | /* | |
9370 | * Very quickly put the term setting back into the register since | |
9371 | * the chip reset may cause odd things to happen. This is to keep | |
9372 | * LVD busses with lots of drives from draining the power out of | |
9373 | * the diffsense line before we get around to running the | |
9374 | * configure_termination() function. Also restore the STPWLEVEL | |
9375 | * bit of DEVCONFIG | |
9376 | */ | |
9377 | aic_outb(temp_p, sxfrctl1, SXFRCTL1); | |
9378 | pci_write_config_dword(temp_p->pdev, DEVCONFIG, devconfig); | |
9379 | sxfrctl1 &= STPWEN; | |
9380 | ||
9381 | /* | |
9382 | * We need to set the CHNL? assignments before loading the SEEPROM | |
9383 | * The 3940 and 3985 cards (original stuff, not any of the later | |
9384 | * stuff) are 7870 and 7880 class chips. The Ultra2 stuff falls | |
9385 | * under 7896 and 7897. The 7895 is in a class by itself :) | |
9386 | */ | |
9387 | switch (temp_p->chip & AHC_CHIPID_MASK) | |
9388 | { | |
9389 | case AHC_AIC7870: /* 3840 / 3985 */ | |
9390 | case AHC_AIC7880: /* 3840 UW / 3985 UW */ | |
9391 | if(temp_p->flags & AHC_MULTI_CHANNEL) | |
9392 | { | |
9393 | switch(PCI_SLOT(temp_p->pci_device_fn)) | |
9394 | { | |
9395 | case 5: | |
9396 | temp_p->flags |= AHC_CHNLB; | |
9397 | break; | |
9398 | case 8: | |
9399 | temp_p->flags |= AHC_CHNLB; | |
9400 | break; | |
9401 | case 12: | |
9402 | temp_p->flags |= AHC_CHNLC; | |
9403 | break; | |
9404 | default: | |
9405 | break; | |
9406 | } | |
9407 | } | |
9408 | break; | |
9409 | ||
9410 | case AHC_AIC7895: /* 7895 */ | |
9411 | case AHC_AIC7896: /* 7896/7 */ | |
9412 | case AHC_AIC7899: /* 7899 */ | |
9413 | if (PCI_FUNC(pdev->devfn) != 0) | |
9414 | { | |
9415 | temp_p->flags |= AHC_CHNLB; | |
9416 | } | |
9417 | /* | |
9418 | * The 7895 is the only chipset that sets the SCBSIZE32 param | |
9419 | * in the DEVCONFIG register. The Ultra2 chipsets use | |
9420 | * the DSCOMMAND0 register instead. | |
9421 | */ | |
9422 | if ((temp_p->chip & AHC_CHIPID_MASK) == AHC_AIC7895) | |
9423 | { | |
9424 | pci_read_config_dword(pdev, DEVCONFIG, &devconfig); | |
9425 | devconfig |= SCBSIZE32; | |
9426 | pci_write_config_dword(pdev, DEVCONFIG, devconfig); | |
9427 | } | |
9428 | break; | |
9429 | default: | |
9430 | break; | |
9431 | } | |
9432 | ||
9433 | /* | |
9434 | * Loading of the SEEPROM needs to come after we've set the flags | |
9435 | * to indicate possible CHNLB and CHNLC assigments. Otherwise, | |
9436 | * on 394x and 398x cards we'll end up reading the wrong settings | |
9437 | * for channels B and C | |
9438 | */ | |
9439 | switch (temp_p->chip & AHC_CHIPID_MASK) | |
9440 | { | |
9441 | case AHC_AIC7892: | |
9442 | case AHC_AIC7899: | |
9443 | aic_outb(temp_p, 0, SCAMCTL); | |
9444 | /* | |
9445 | * Switch to the alt mode of the chip... | |
9446 | */ | |
9447 | aic_outb(temp_p, aic_inb(temp_p, SFUNCT) | ALT_MODE, SFUNCT); | |
9448 | /* | |
9449 | * Set our options...the last two items set our CRC after x byte | |
9450 | * count in target mode... | |
9451 | */ | |
9452 | aic_outb(temp_p, AUTO_MSGOUT_DE | DIS_MSGIN_DUALEDGE, OPTIONMODE); | |
9453 | aic_outb(temp_p, 0x00, 0x0b); | |
9454 | aic_outb(temp_p, 0x10, 0x0a); | |
9455 | /* | |
9456 | * switch back to normal mode... | |
9457 | */ | |
9458 | aic_outb(temp_p, aic_inb(temp_p, SFUNCT) & ~ALT_MODE, SFUNCT); | |
9459 | aic_outb(temp_p, CRCVALCHKEN | CRCENDCHKEN | CRCREQCHKEN | | |
9460 | TARGCRCENDEN | TARGCRCCNTEN, | |
9461 | CRCCONTROL1); | |
9462 | aic_outb(temp_p, ((aic_inb(temp_p, DSCOMMAND0) | USCBSIZE32 | | |
9463 | MPARCKEN | CIOPARCKEN | CACHETHEN) & | |
9464 | ~DPARCKEN), DSCOMMAND0); | |
9465 | aic7xxx_load_seeprom(temp_p, &sxfrctl1); | |
9466 | break; | |
9467 | case AHC_AIC7890: | |
9468 | case AHC_AIC7896: | |
9469 | aic_outb(temp_p, 0, SCAMCTL); | |
9470 | aic_outb(temp_p, (aic_inb(temp_p, DSCOMMAND0) | | |
9471 | CACHETHEN | MPARCKEN | USCBSIZE32 | | |
9472 | CIOPARCKEN) & ~DPARCKEN, DSCOMMAND0); | |
9473 | aic7xxx_load_seeprom(temp_p, &sxfrctl1); | |
9474 | break; | |
9475 | case AHC_AIC7850: | |
9476 | case AHC_AIC7860: | |
9477 | /* | |
9478 | * Set the DSCOMMAND0 register on these cards different from | |
9479 | * on the 789x cards. Also, read the SEEPROM as well. | |
9480 | */ | |
9481 | aic_outb(temp_p, (aic_inb(temp_p, DSCOMMAND0) | | |
9482 | CACHETHEN | MPARCKEN) & ~DPARCKEN, | |
9483 | DSCOMMAND0); | |
9484 | /* FALLTHROUGH */ | |
9485 | default: | |
9486 | aic7xxx_load_seeprom(temp_p, &sxfrctl1); | |
9487 | break; | |
9488 | case AHC_AIC7880: | |
9489 | /* | |
9490 | * Check the rev of the chipset before we change DSCOMMAND0 | |
9491 | */ | |
9492 | pci_read_config_dword(pdev, DEVCONFIG, &devconfig); | |
9493 | if ((devconfig & 0xff) >= 1) | |
9494 | { | |
9495 | aic_outb(temp_p, (aic_inb(temp_p, DSCOMMAND0) | | |
9496 | CACHETHEN | MPARCKEN) & ~DPARCKEN, | |
9497 | DSCOMMAND0); | |
9498 | } | |
9499 | aic7xxx_load_seeprom(temp_p, &sxfrctl1); | |
9500 | break; | |
9501 | } | |
9502 | ||
9503 | ||
9504 | /* | |
9505 | * and then we need another switch based on the type in order to | |
9506 | * make sure the channel B primary flag is set properly on 7895 | |
9507 | * controllers....Arrrgggghhh!!! We also have to catch the fact | |
9508 | * that when you disable the BIOS on the 7895 on the Intel DK440LX | |
9509 | * motherboard, and possibly others, it only sets the BIOS disabled | |
9510 | * bit on the A channel...I think I'm starting to lean towards | |
9511 | * going postal.... | |
9512 | */ | |
9513 | switch(temp_p->chip & AHC_CHIPID_MASK) | |
9514 | { | |
9515 | case AHC_AIC7895: | |
9516 | case AHC_AIC7896: | |
9517 | case AHC_AIC7899: | |
9518 | current_p = list_p; | |
9519 | while(current_p != NULL) | |
9520 | { | |
9521 | if ( (current_p->pci_bus == temp_p->pci_bus) && | |
9522 | (PCI_SLOT(current_p->pci_device_fn) == | |
9523 | PCI_SLOT(temp_p->pci_device_fn)) ) | |
9524 | { | |
9525 | if ( PCI_FUNC(current_p->pci_device_fn) == 0 ) | |
9526 | { | |
9527 | temp_p->flags |= | |
9528 | (current_p->flags & AHC_CHANNEL_B_PRIMARY); | |
9529 | temp_p->flags &= ~(AHC_BIOS_ENABLED|AHC_USEDEFAULTS); | |
9530 | temp_p->flags |= | |
9531 | (current_p->flags & (AHC_BIOS_ENABLED|AHC_USEDEFAULTS)); | |
9532 | } | |
9533 | else | |
9534 | { | |
9535 | current_p->flags |= | |
9536 | (temp_p->flags & AHC_CHANNEL_B_PRIMARY); | |
9537 | current_p->flags &= ~(AHC_BIOS_ENABLED|AHC_USEDEFAULTS); | |
9538 | current_p->flags |= | |
9539 | (temp_p->flags & (AHC_BIOS_ENABLED|AHC_USEDEFAULTS)); | |
9540 | } | |
9541 | } | |
9542 | current_p = current_p->next; | |
9543 | } | |
9544 | break; | |
9545 | default: | |
9546 | break; | |
9547 | } | |
9548 | ||
9549 | /* | |
9550 | * We only support external SCB RAM on the 7895/6/7 chipsets. | |
9551 | * We could support it on the 7890/1 easy enough, but I don't | |
9552 | * know of any 7890/1 based cards that have it. I do know | |
9553 | * of 7895/6/7 cards that have it and they work properly. | |
9554 | */ | |
9555 | switch(temp_p->chip & AHC_CHIPID_MASK) | |
9556 | { | |
9557 | default: | |
9558 | break; | |
9559 | case AHC_AIC7895: | |
9560 | case AHC_AIC7896: | |
9561 | case AHC_AIC7899: | |
9562 | pci_read_config_dword(pdev, DEVCONFIG, &devconfig); | |
9563 | if (temp_p->features & AHC_ULTRA2) | |
9564 | { | |
9565 | if ( (aic_inb(temp_p, DSCOMMAND0) & RAMPSM_ULTRA2) && | |
9566 | (aic7xxx_scbram) ) | |
9567 | { | |
9568 | aic_outb(temp_p, | |
9569 | aic_inb(temp_p, DSCOMMAND0) & ~SCBRAMSEL_ULTRA2, | |
9570 | DSCOMMAND0); | |
9571 | temp_p->flags |= AHC_EXTERNAL_SRAM; | |
9572 | devconfig |= EXTSCBPEN; | |
9573 | } | |
9574 | else if (aic_inb(temp_p, DSCOMMAND0) & RAMPSM_ULTRA2) | |
9575 | { | |
9576 | printk(KERN_INFO "aic7xxx: <%s> at PCI %d/%d/%d\n", | |
9577 | board_names[aic_pdevs[i].board_name_index], | |
9578 | temp_p->pci_bus, | |
9579 | PCI_SLOT(temp_p->pci_device_fn), | |
9580 | PCI_FUNC(temp_p->pci_device_fn)); | |
9581 | printk("aic7xxx: external SCB RAM detected, " | |
9582 | "but not enabled\n"); | |
9583 | } | |
9584 | } | |
9585 | else | |
9586 | { | |
9587 | if ((devconfig & RAMPSM) && (aic7xxx_scbram)) | |
9588 | { | |
9589 | devconfig &= ~SCBRAMSEL; | |
9590 | devconfig |= EXTSCBPEN; | |
9591 | temp_p->flags |= AHC_EXTERNAL_SRAM; | |
9592 | } | |
9593 | else if (devconfig & RAMPSM) | |
9594 | { | |
9595 | printk(KERN_INFO "aic7xxx: <%s> at PCI %d/%d/%d\n", | |
9596 | board_names[aic_pdevs[i].board_name_index], | |
9597 | temp_p->pci_bus, | |
9598 | PCI_SLOT(temp_p->pci_device_fn), | |
9599 | PCI_FUNC(temp_p->pci_device_fn)); | |
9600 | printk("aic7xxx: external SCB RAM detected, " | |
9601 | "but not enabled\n"); | |
9602 | } | |
9603 | } | |
9604 | pci_write_config_dword(pdev, DEVCONFIG, devconfig); | |
9605 | if ( (temp_p->flags & AHC_EXTERNAL_SRAM) && | |
9606 | (temp_p->flags & AHC_CHNLB) ) | |
9607 | aic_outb(temp_p, 1, CCSCBBADDR); | |
9608 | break; | |
9609 | } | |
9610 | ||
9611 | /* | |
9612 | * Take the LED out of diagnostic mode | |
9613 | */ | |
9614 | aic_outb(temp_p, | |
9615 | (aic_inb(temp_p, SBLKCTL) & ~(DIAGLEDEN | DIAGLEDON)), | |
9616 | SBLKCTL); | |
9617 | ||
9618 | /* | |
9619 | * We don't know where this is set in the SEEPROM or by the | |
9620 | * BIOS, so we default to 100%. On Ultra2 controllers, use 75% | |
9621 | * instead. | |
9622 | */ | |
9623 | if (temp_p->features & AHC_ULTRA2) | |
9624 | { | |
9625 | aic_outb(temp_p, RD_DFTHRSH_MAX | WR_DFTHRSH_MAX, DFF_THRSH); | |
9626 | } | |
9627 | else | |
9628 | { | |
9629 | aic_outb(temp_p, DFTHRSH_100, DSPCISTATUS); | |
9630 | } | |
9631 | ||
9632 | /* | |
9633 | * Call our function to fixup any bugs that exist on this chipset. | |
9634 | * This may muck with PCI settings and other device settings, so | |
9635 | * make sure it's after all the other PCI and device register | |
9636 | * tweaks so it can back out bad settings on specific broken cards. | |
9637 | */ | |
9638 | aic7xxx_configure_bugs(temp_p); | |
9639 | ||
a07f3537 AC |
9640 | /* Hold a pci device reference */ |
9641 | pci_dev_get(temp_p->pdev); | |
9642 | ||
1da177e4 LT |
9643 | if ( list_p == NULL ) |
9644 | { | |
9645 | list_p = current_p = temp_p; | |
9646 | } | |
9647 | else | |
9648 | { | |
9649 | current_p = list_p; | |
9650 | while(current_p->next != NULL) | |
9651 | current_p = current_p->next; | |
9652 | current_p->next = temp_p; | |
9653 | } | |
9654 | temp_p->next = NULL; | |
9655 | found++; | |
9656 | continue; | |
9657 | skip_pci_controller: | |
9658 | #ifdef CONFIG_PCI | |
9659 | pci_release_regions(temp_p->pdev); | |
9660 | #endif | |
9661 | kfree(temp_p); | |
9662 | } /* Found an Adaptec PCI device. */ | |
9663 | else /* Well, we found one, but we couldn't get any memory */ | |
9664 | { | |
9665 | printk("aic7xxx: Found <%s>\n", | |
9666 | board_names[aic_pdevs[i].board_name_index]); | |
9667 | printk(KERN_INFO "aic7xxx: Unable to allocate device memory, " | |
9668 | "skipping.\n"); | |
9669 | } | |
9670 | } /* while(pdev=....) */ | |
9671 | } /* for PCI_DEVICES */ | |
9672 | } | |
9673 | #endif /* CONFIG_PCI */ | |
9674 | ||
9675 | #if defined(__i386__) || defined(__alpha__) | |
9676 | /* | |
9677 | * EISA/VL-bus card signature probe. | |
9678 | */ | |
9679 | slot = MINSLOT; | |
9680 | while ( (slot <= MAXSLOT) && | |
9681 | !(aic7xxx_no_probe) ) | |
9682 | { | |
9683 | base = SLOTBASE(slot) + MINREG; | |
9684 | ||
9685 | if (!request_region(base, MAXREG - MINREG, "aic7xxx")) | |
9686 | { | |
9687 | /* | |
9688 | * Some other driver has staked a | |
9689 | * claim to this i/o region already. | |
9690 | */ | |
9691 | slot++; | |
9692 | continue; /* back to the beginning of the for loop */ | |
9693 | } | |
9694 | flags = 0; | |
9695 | type = aic7xxx_probe(slot, base + AHC_HID0, &flags); | |
9696 | if (type == -1) | |
9697 | { | |
9698 | release_region(base, MAXREG - MINREG); | |
9699 | slot++; | |
9700 | continue; | |
9701 | } | |
9702 | temp_p = kmalloc(sizeof(struct aic7xxx_host), GFP_ATOMIC); | |
9703 | if (temp_p == NULL) | |
9704 | { | |
9705 | printk(KERN_WARNING "aic7xxx: Unable to allocate device space.\n"); | |
9706 | release_region(base, MAXREG - MINREG); | |
9707 | slot++; | |
9708 | continue; /* back to the beginning of the while loop */ | |
9709 | } | |
9710 | ||
9711 | /* | |
9712 | * Pause the card preserving the IRQ type. Allow the operator | |
9713 | * to override the IRQ trigger. | |
9714 | */ | |
9715 | if (aic7xxx_irq_trigger == 1) | |
9716 | hcntrl = IRQMS; /* Level */ | |
9717 | else if (aic7xxx_irq_trigger == 0) | |
9718 | hcntrl = 0; /* Edge */ | |
9719 | else | |
9720 | hcntrl = inb(base + HCNTRL) & IRQMS; /* Default */ | |
9721 | memset(temp_p, 0, sizeof(struct aic7xxx_host)); | |
9722 | temp_p->unpause = hcntrl | INTEN; | |
9723 | temp_p->pause = hcntrl | PAUSE | INTEN; | |
9724 | temp_p->base = base; | |
9725 | temp_p->mbase = 0; | |
9726 | temp_p->maddr = NULL; | |
9727 | temp_p->pci_bus = 0; | |
9728 | temp_p->pci_device_fn = slot; | |
9729 | aic_outb(temp_p, hcntrl | PAUSE, HCNTRL); | |
9730 | while( (aic_inb(temp_p, HCNTRL) & PAUSE) == 0 ) ; | |
9731 | if (aic7xxx_chip_reset(temp_p) == -1) | |
9732 | temp_p->irq = 0; | |
9733 | else | |
9734 | temp_p->irq = aic_inb(temp_p, INTDEF) & 0x0F; | |
9735 | temp_p->flags |= AHC_PAGESCBS; | |
9736 | ||
9737 | switch (temp_p->irq) | |
9738 | { | |
9739 | case 9: | |
9740 | case 10: | |
9741 | case 11: | |
9742 | case 12: | |
9743 | case 14: | |
9744 | case 15: | |
9745 | break; | |
9746 | ||
9747 | default: | |
9748 | printk(KERN_WARNING "aic7xxx: Host adapter uses unsupported IRQ " | |
9749 | "level %d, ignoring.\n", temp_p->irq); | |
9750 | kfree(temp_p); | |
9751 | release_region(base, MAXREG - MINREG); | |
9752 | slot++; | |
9753 | continue; /* back to the beginning of the while loop */ | |
9754 | } | |
9755 | ||
9756 | /* | |
9757 | * We are commited now, everything has been checked and this card | |
9758 | * has been found, now we just set it up | |
9759 | */ | |
9760 | ||
9761 | /* | |
9762 | * Insert our new struct into the list at the end | |
9763 | */ | |
9764 | if (list_p == NULL) | |
9765 | { | |
9766 | list_p = current_p = temp_p; | |
9767 | } | |
9768 | else | |
9769 | { | |
9770 | current_p = list_p; | |
9771 | while (current_p->next != NULL) | |
9772 | current_p = current_p->next; | |
9773 | current_p->next = temp_p; | |
9774 | } | |
9775 | ||
9776 | switch (type) | |
9777 | { | |
9778 | case 0: | |
9779 | temp_p->board_name_index = 2; | |
9780 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
9781 | printk("aic7xxx: <%s> at EISA %d\n", | |
9782 | board_names[2], slot); | |
9783 | /* FALLTHROUGH */ | |
9784 | case 1: | |
9785 | { | |
9786 | temp_p->chip = AHC_AIC7770 | AHC_EISA; | |
9787 | temp_p->features |= AHC_AIC7770_FE; | |
9788 | temp_p->bios_control = aic_inb(temp_p, HA_274_BIOSCTRL); | |
9789 | ||
9790 | /* | |
9791 | * Get the primary channel information. Right now we don't | |
9792 | * do anything with this, but someday we will be able to inform | |
9793 | * the mid-level SCSI code which channel is primary. | |
9794 | */ | |
9795 | if (temp_p->board_name_index == 0) | |
9796 | { | |
9797 | temp_p->board_name_index = 3; | |
9798 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
9799 | printk("aic7xxx: <%s> at EISA %d\n", | |
9800 | board_names[3], slot); | |
9801 | } | |
9802 | if (temp_p->bios_control & CHANNEL_B_PRIMARY) | |
9803 | { | |
9804 | temp_p->flags |= AHC_CHANNEL_B_PRIMARY; | |
9805 | } | |
9806 | ||
9807 | if ((temp_p->bios_control & BIOSMODE) == BIOSDISABLED) | |
9808 | { | |
9809 | temp_p->flags &= ~AHC_BIOS_ENABLED; | |
9810 | } | |
9811 | else | |
9812 | { | |
9813 | temp_p->flags &= ~AHC_USEDEFAULTS; | |
9814 | temp_p->flags |= AHC_BIOS_ENABLED; | |
9815 | if ( (temp_p->bios_control & 0x20) == 0 ) | |
9816 | { | |
9817 | temp_p->bios_address = 0xcc000; | |
9818 | temp_p->bios_address += (0x4000 * (temp_p->bios_control & 0x07)); | |
9819 | } | |
9820 | else | |
9821 | { | |
9822 | temp_p->bios_address = 0xd0000; | |
9823 | temp_p->bios_address += (0x8000 * (temp_p->bios_control & 0x06)); | |
9824 | } | |
9825 | } | |
9826 | temp_p->adapter_control = aic_inb(temp_p, SCSICONF) << 8; | |
9827 | temp_p->adapter_control |= aic_inb(temp_p, SCSICONF + 1); | |
9828 | if (temp_p->features & AHC_WIDE) | |
9829 | { | |
9830 | temp_p->scsi_id = temp_p->adapter_control & HWSCSIID; | |
9831 | temp_p->scsi_id_b = temp_p->scsi_id; | |
9832 | } | |
9833 | else | |
9834 | { | |
9835 | temp_p->scsi_id = (temp_p->adapter_control >> 8) & HSCSIID; | |
9836 | temp_p->scsi_id_b = temp_p->adapter_control & HSCSIID; | |
9837 | } | |
9838 | aic7xxx_load_seeprom(temp_p, &sxfrctl1); | |
9839 | break; | |
9840 | } | |
9841 | ||
9842 | case 2: | |
9843 | case 3: | |
9844 | temp_p->chip = AHC_AIC7770 | AHC_VL; | |
9845 | temp_p->features |= AHC_AIC7770_FE; | |
9846 | if (type == 2) | |
9847 | temp_p->flags |= AHC_BIOS_ENABLED; | |
9848 | else | |
9849 | temp_p->flags &= ~AHC_BIOS_ENABLED; | |
9850 | if (aic_inb(temp_p, SCSICONF) & TERM_ENB) | |
9851 | sxfrctl1 = STPWEN; | |
9852 | aic7xxx_load_seeprom(temp_p, &sxfrctl1); | |
9853 | temp_p->board_name_index = 4; | |
9854 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
9855 | printk("aic7xxx: <%s> at VLB %d\n", | |
9856 | board_names[2], slot); | |
9857 | switch( aic_inb(temp_p, STATUS_2840) & BIOS_SEL ) | |
9858 | { | |
9859 | case 0x00: | |
9860 | temp_p->bios_address = 0xe0000; | |
9861 | break; | |
9862 | case 0x20: | |
9863 | temp_p->bios_address = 0xc8000; | |
9864 | break; | |
9865 | case 0x40: | |
9866 | temp_p->bios_address = 0xd0000; | |
9867 | break; | |
9868 | case 0x60: | |
9869 | temp_p->bios_address = 0xd8000; | |
9870 | break; | |
9871 | default: | |
9872 | break; /* can't get here */ | |
9873 | } | |
9874 | break; | |
9875 | ||
9876 | default: /* Won't get here. */ | |
9877 | break; | |
9878 | } | |
9879 | if (aic7xxx_verbose & VERBOSE_PROBE2) | |
9880 | { | |
9881 | printk(KERN_INFO "aic7xxx: BIOS %sabled, IO Port 0x%lx, IRQ %d (%s)\n", | |
9882 | (temp_p->flags & AHC_USEDEFAULTS) ? "dis" : "en", temp_p->base, | |
9883 | temp_p->irq, | |
9884 | (temp_p->pause & IRQMS) ? "level sensitive" : "edge triggered"); | |
9885 | printk(KERN_INFO "aic7xxx: Extended translation %sabled.\n", | |
9886 | (temp_p->flags & AHC_EXTEND_TRANS_A) ? "en" : "dis"); | |
9887 | } | |
9888 | ||
9889 | /* | |
9890 | * All the 7770 based chipsets have this bug | |
9891 | */ | |
9892 | temp_p->bugs |= AHC_BUG_TMODE_WIDEODD; | |
9893 | ||
9894 | /* | |
9895 | * Set the FIFO threshold and the bus off time. | |
9896 | */ | |
9897 | hostconf = aic_inb(temp_p, HOSTCONF); | |
9898 | aic_outb(temp_p, hostconf & DFTHRSH, BUSSPD); | |
9899 | aic_outb(temp_p, (hostconf << 2) & BOFF, BUSTIME); | |
9900 | slot++; | |
9901 | found++; | |
9902 | } | |
9903 | ||
9904 | #endif /* defined(__i386__) || defined(__alpha__) */ | |
9905 | ||
9906 | /* | |
9907 | * Now, we re-order the probed devices by BIOS address and BUS class. | |
9908 | * In general, we follow this algorithm to make the adapters show up | |
9909 | * in the same order under linux that the computer finds them. | |
9910 | * 1: All VLB/EISA cards with BIOS_ENABLED first, according to BIOS | |
9911 | * address, going from lowest to highest. | |
9912 | * 2: All PCI controllers with BIOS_ENABLED next, according to BIOS | |
9913 | * address, going from lowest to highest. | |
9914 | * 3: Remaining VLB/EISA controllers going in slot order. | |
9915 | * 4: Remaining PCI controllers, going in PCI device order (reversable) | |
9916 | */ | |
9917 | ||
9918 | { | |
9919 | struct aic7xxx_host *sort_list[4] = { NULL, NULL, NULL, NULL }; | |
9920 | struct aic7xxx_host *vlb, *pci; | |
9921 | struct aic7xxx_host *prev_p; | |
9922 | struct aic7xxx_host *p; | |
9923 | unsigned char left; | |
9924 | ||
9925 | prev_p = vlb = pci = NULL; | |
9926 | ||
9927 | temp_p = list_p; | |
9928 | while (temp_p != NULL) | |
9929 | { | |
9930 | switch(temp_p->chip & ~AHC_CHIPID_MASK) | |
9931 | { | |
9932 | case AHC_EISA: | |
9933 | case AHC_VL: | |
9934 | { | |
9935 | p = temp_p; | |
9936 | if (p->flags & AHC_BIOS_ENABLED) | |
9937 | vlb = sort_list[0]; | |
9938 | else | |
9939 | vlb = sort_list[2]; | |
9940 | ||
9941 | if (vlb == NULL) | |
9942 | { | |
9943 | vlb = temp_p; | |
9944 | temp_p = temp_p->next; | |
9945 | vlb->next = NULL; | |
9946 | } | |
9947 | else | |
9948 | { | |
9949 | current_p = vlb; | |
9950 | prev_p = NULL; | |
9951 | while ( (current_p != NULL) && | |
9952 | (current_p->bios_address < temp_p->bios_address)) | |
9953 | { | |
9954 | prev_p = current_p; | |
9955 | current_p = current_p->next; | |
9956 | } | |
9957 | if (prev_p != NULL) | |
9958 | { | |
9959 | prev_p->next = temp_p; | |
9960 | temp_p = temp_p->next; | |
9961 | prev_p->next->next = current_p; | |
9962 | } | |
9963 | else | |
9964 | { | |
9965 | vlb = temp_p; | |
9966 | temp_p = temp_p->next; | |
9967 | vlb->next = current_p; | |
9968 | } | |
9969 | } | |
9970 | ||
9971 | if (p->flags & AHC_BIOS_ENABLED) | |
9972 | sort_list[0] = vlb; | |
9973 | else | |
9974 | sort_list[2] = vlb; | |
9975 | ||
9976 | break; | |
9977 | } | |
9978 | default: /* All PCI controllers fall through to default */ | |
9979 | { | |
9980 | ||
9981 | p = temp_p; | |
9982 | if (p->flags & AHC_BIOS_ENABLED) | |
9983 | pci = sort_list[1]; | |
9984 | else | |
9985 | pci = sort_list[3]; | |
9986 | ||
9987 | if (pci == NULL) | |
9988 | { | |
9989 | pci = temp_p; | |
9990 | temp_p = temp_p->next; | |
9991 | pci->next = NULL; | |
9992 | } | |
9993 | else | |
9994 | { | |
9995 | current_p = pci; | |
9996 | prev_p = NULL; | |
9997 | if (!aic7xxx_reverse_scan) | |
9998 | { | |
9999 | while ( (current_p != NULL) && | |
10000 | ( (PCI_SLOT(current_p->pci_device_fn) | | |
10001 | (current_p->pci_bus << 8)) < | |
10002 | (PCI_SLOT(temp_p->pci_device_fn) | | |
10003 | (temp_p->pci_bus << 8)) ) ) | |
10004 | { | |
10005 | prev_p = current_p; | |
10006 | current_p = current_p->next; | |
10007 | } | |
10008 | } | |
10009 | else | |
10010 | { | |
10011 | while ( (current_p != NULL) && | |
10012 | ( (PCI_SLOT(current_p->pci_device_fn) | | |
10013 | (current_p->pci_bus << 8)) > | |
10014 | (PCI_SLOT(temp_p->pci_device_fn) | | |
10015 | (temp_p->pci_bus << 8)) ) ) | |
10016 | { | |
10017 | prev_p = current_p; | |
10018 | current_p = current_p->next; | |
10019 | } | |
10020 | } | |
10021 | /* | |
10022 | * Are we dealing with a 7895/6/7/9 where we need to sort the | |
10023 | * channels as well, if so, the bios_address values should | |
10024 | * be the same | |
10025 | */ | |
10026 | if ( (current_p) && (temp_p->flags & AHC_MULTI_CHANNEL) && | |
10027 | (temp_p->pci_bus == current_p->pci_bus) && | |
10028 | (PCI_SLOT(temp_p->pci_device_fn) == | |
10029 | PCI_SLOT(current_p->pci_device_fn)) ) | |
10030 | { | |
10031 | if (temp_p->flags & AHC_CHNLB) | |
10032 | { | |
10033 | if ( !(temp_p->flags & AHC_CHANNEL_B_PRIMARY) ) | |
10034 | { | |
10035 | prev_p = current_p; | |
10036 | current_p = current_p->next; | |
10037 | } | |
10038 | } | |
10039 | else | |
10040 | { | |
10041 | if (temp_p->flags & AHC_CHANNEL_B_PRIMARY) | |
10042 | { | |
10043 | prev_p = current_p; | |
10044 | current_p = current_p->next; | |
10045 | } | |
10046 | } | |
10047 | } | |
10048 | if (prev_p != NULL) | |
10049 | { | |
10050 | prev_p->next = temp_p; | |
10051 | temp_p = temp_p->next; | |
10052 | prev_p->next->next = current_p; | |
10053 | } | |
10054 | else | |
10055 | { | |
10056 | pci = temp_p; | |
10057 | temp_p = temp_p->next; | |
10058 | pci->next = current_p; | |
10059 | } | |
10060 | } | |
10061 | ||
10062 | if (p->flags & AHC_BIOS_ENABLED) | |
10063 | sort_list[1] = pci; | |
10064 | else | |
10065 | sort_list[3] = pci; | |
10066 | ||
10067 | break; | |
10068 | } | |
10069 | } /* End of switch(temp_p->type) */ | |
10070 | } /* End of while (temp_p != NULL) */ | |
10071 | /* | |
10072 | * At this point, the cards have been broken into 4 sorted lists, now | |
10073 | * we run through the lists in order and register each controller | |
10074 | */ | |
10075 | { | |
10076 | int i; | |
10077 | ||
10078 | left = found; | |
10079 | for (i=0; i<ARRAY_SIZE(sort_list); i++) | |
10080 | { | |
10081 | temp_p = sort_list[i]; | |
10082 | while(temp_p != NULL) | |
10083 | { | |
10084 | template->name = board_names[temp_p->board_name_index]; | |
10085 | p = aic7xxx_alloc(template, temp_p); | |
10086 | if (p != NULL) | |
10087 | { | |
10088 | p->instance = found - left; | |
10089 | if (aic7xxx_register(template, p, (--left)) == 0) | |
10090 | { | |
10091 | found--; | |
10092 | aic7xxx_release(p->host); | |
10093 | scsi_unregister(p->host); | |
10094 | } | |
10095 | else if (aic7xxx_dump_card) | |
10096 | { | |
10097 | pause_sequencer(p); | |
10098 | aic7xxx_print_card(p); | |
10099 | aic7xxx_print_scratch_ram(p); | |
10100 | unpause_sequencer(p, TRUE); | |
10101 | } | |
10102 | } | |
10103 | current_p = temp_p; | |
10104 | temp_p = (struct aic7xxx_host *)temp_p->next; | |
10105 | kfree(current_p); | |
10106 | } | |
10107 | } | |
10108 | } | |
10109 | } | |
10110 | return (found); | |
10111 | } | |
10112 | ||
10113 | /*+F************************************************************************* | |
10114 | * Function: | |
10115 | * aic7xxx_buildscb | |
10116 | * | |
10117 | * Description: | |
10118 | * Build a SCB. | |
10119 | *-F*************************************************************************/ | |
c1278289 H |
10120 | static void aic7xxx_buildscb(struct aic7xxx_host *p, struct scsi_cmnd *cmd, |
10121 | struct aic7xxx_scb *scb) | |
1da177e4 LT |
10122 | { |
10123 | unsigned short mask; | |
10124 | struct aic7xxx_hwscb *hscb; | |
10125 | struct aic_dev_data *aic_dev = cmd->device->hostdata; | |
10126 | struct scsi_device *sdptr = cmd->device; | |
10127 | unsigned char tindex = TARGET_INDEX(cmd); | |
10128 | struct request *req = cmd->request; | |
22c1a660 | 10129 | int use_sg; |
1da177e4 LT |
10130 | |
10131 | mask = (0x01 << tindex); | |
10132 | hscb = scb->hscb; | |
10133 | ||
10134 | /* | |
10135 | * Setup the control byte if we need negotiation and have not | |
10136 | * already requested it. | |
10137 | */ | |
10138 | hscb->control = 0; | |
10139 | scb->tag_action = 0; | |
10140 | ||
10141 | if (p->discenable & mask) | |
10142 | { | |
10143 | hscb->control |= DISCENB; | |
10144 | /* We always force TEST_UNIT_READY to untagged */ | |
10145 | if (cmd->cmnd[0] != TEST_UNIT_READY && sdptr->simple_tags) | |
10146 | { | |
4aff5e23 | 10147 | if (req->cmd_flags & REQ_HARDBARRIER) |
1da177e4 LT |
10148 | { |
10149 | if(sdptr->ordered_tags) | |
10150 | { | |
10151 | hscb->control |= MSG_ORDERED_Q_TAG; | |
10152 | scb->tag_action = MSG_ORDERED_Q_TAG; | |
10153 | } | |
10154 | } | |
10155 | else | |
10156 | { | |
10157 | hscb->control |= MSG_SIMPLE_Q_TAG; | |
10158 | scb->tag_action = MSG_SIMPLE_Q_TAG; | |
10159 | } | |
10160 | } | |
10161 | } | |
10162 | if ( !(aic_dev->dtr_pending) && | |
10163 | (aic_dev->needppr || aic_dev->needwdtr || aic_dev->needsdtr) && | |
10164 | (aic_dev->flags & DEVICE_DTR_SCANNED) ) | |
10165 | { | |
10166 | aic_dev->dtr_pending = 1; | |
10167 | scb->tag_action = 0; | |
10168 | hscb->control &= DISCENB; | |
10169 | hscb->control |= MK_MESSAGE; | |
10170 | if(aic_dev->needppr) | |
10171 | { | |
10172 | scb->flags |= SCB_MSGOUT_PPR; | |
10173 | } | |
10174 | else if(aic_dev->needwdtr) | |
10175 | { | |
10176 | scb->flags |= SCB_MSGOUT_WDTR; | |
10177 | } | |
10178 | else if(aic_dev->needsdtr) | |
10179 | { | |
10180 | scb->flags |= SCB_MSGOUT_SDTR; | |
10181 | } | |
10182 | scb->flags |= SCB_DTR_SCB; | |
10183 | } | |
10184 | hscb->target_channel_lun = ((cmd->device->id << 4) & 0xF0) | | |
10185 | ((cmd->device->channel & 0x01) << 3) | (cmd->device->lun & 0x07); | |
10186 | ||
10187 | /* | |
10188 | * The interpretation of request_buffer and request_bufflen | |
10189 | * changes depending on whether or not use_sg is zero; a | |
10190 | * non-zero use_sg indicates the number of elements in the | |
10191 | * scatter-gather array. | |
10192 | */ | |
10193 | ||
10194 | /* | |
10195 | * XXX - this relies on the host data being stored in a | |
10196 | * little-endian format. | |
10197 | */ | |
10198 | hscb->SCSI_cmd_length = cmd->cmd_len; | |
10199 | memcpy(scb->cmnd, cmd->cmnd, cmd->cmd_len); | |
10200 | hscb->SCSI_cmd_pointer = cpu_to_le32(SCB_DMA_ADDR(scb, scb->cmnd)); | |
10201 | ||
22c1a660 FT |
10202 | use_sg = scsi_dma_map(cmd); |
10203 | BUG_ON(use_sg < 0); | |
10204 | ||
10205 | if (use_sg) { | |
1da177e4 LT |
10206 | struct scatterlist *sg; /* Must be mid-level SCSI code scatterlist */ |
10207 | ||
10208 | /* | |
10209 | * We must build an SG list in adapter format, as the kernel's SG list | |
10210 | * cannot be used directly because of data field size (__alpha__) | |
10211 | * differences and the kernel SG list uses virtual addresses where | |
10212 | * we need physical addresses. | |
10213 | */ | |
22c1a660 | 10214 | int i; |
1da177e4 | 10215 | |
1da177e4 | 10216 | scb->sg_length = 0; |
22c1a660 FT |
10217 | |
10218 | ||
1da177e4 LT |
10219 | /* |
10220 | * Copy the segments into the SG array. NOTE!!! - We used to | |
10221 | * have the first entry both in the data_pointer area and the first | |
10222 | * SG element. That has changed somewhat. We still have the first | |
10223 | * entry in both places, but now we download the address of | |
10224 | * scb->sg_list[1] instead of 0 to the sg pointer in the hscb. | |
10225 | */ | |
22c1a660 FT |
10226 | scsi_for_each_sg(cmd, sg, use_sg, i) { |
10227 | unsigned int len = sg_dma_len(sg); | |
10228 | scb->sg_list[i].address = cpu_to_le32(sg_dma_address(sg)); | |
1da177e4 LT |
10229 | scb->sg_list[i].length = cpu_to_le32(len); |
10230 | scb->sg_length += len; | |
10231 | } | |
10232 | /* Copy the first SG into the data pointer area. */ | |
10233 | hscb->data_pointer = scb->sg_list[0].address; | |
10234 | hscb->data_count = scb->sg_list[0].length; | |
10235 | scb->sg_count = i; | |
10236 | hscb->SG_segment_count = i; | |
10237 | hscb->SG_list_pointer = cpu_to_le32(SCB_DMA_ADDR(scb, &scb->sg_list[1])); | |
22c1a660 | 10238 | } else { |
1da177e4 LT |
10239 | scb->sg_count = 0; |
10240 | scb->sg_length = 0; | |
10241 | hscb->SG_segment_count = 0; | |
10242 | hscb->SG_list_pointer = 0; | |
10243 | hscb->data_count = 0; | |
10244 | hscb->data_pointer = 0; | |
1da177e4 LT |
10245 | } |
10246 | } | |
10247 | ||
10248 | /*+F************************************************************************* | |
10249 | * Function: | |
10250 | * aic7xxx_queue | |
10251 | * | |
10252 | * Description: | |
10253 | * Queue a SCB to the controller. | |
10254 | *-F*************************************************************************/ | |
c1278289 | 10255 | static int aic7xxx_queue(struct scsi_cmnd *cmd, void (*fn)(struct scsi_cmnd *)) |
1da177e4 LT |
10256 | { |
10257 | struct aic7xxx_host *p; | |
10258 | struct aic7xxx_scb *scb; | |
10259 | struct aic_dev_data *aic_dev; | |
10260 | ||
10261 | p = (struct aic7xxx_host *) cmd->device->host->hostdata; | |
10262 | ||
10263 | aic_dev = cmd->device->hostdata; | |
10264 | #ifdef AIC7XXX_VERBOSE_DEBUGGING | |
10265 | if (aic_dev->active_cmds > aic_dev->max_q_depth) | |
10266 | { | |
10267 | printk(WARN_LEAD "Commands queued exceeds queue " | |
10268 | "depth, active=%d\n", | |
10269 | p->host_no, CTL_OF_CMD(cmd), | |
10270 | aic_dev->active_cmds); | |
10271 | } | |
10272 | #endif | |
10273 | ||
10274 | scb = scbq_remove_head(&p->scb_data->free_scbs); | |
10275 | if (scb == NULL) | |
10276 | { | |
10277 | aic7xxx_allocate_scb(p); | |
10278 | scb = scbq_remove_head(&p->scb_data->free_scbs); | |
10279 | if(scb == NULL) | |
10280 | { | |
10281 | printk(WARN_LEAD "Couldn't get a free SCB.\n", p->host_no, | |
10282 | CTL_OF_CMD(cmd)); | |
10283 | return 1; | |
10284 | } | |
10285 | } | |
10286 | scb->cmd = cmd; | |
10287 | ||
c1278289 H |
10288 | /* |
10289 | * Make sure the scsi_cmnd pointer is saved, the struct it points to | |
10290 | * is set up properly, and the parity error flag is reset, then send | |
10291 | * the SCB to the sequencer and watch the fun begin. | |
10292 | */ | |
1da177e4 LT |
10293 | aic7xxx_position(cmd) = scb->hscb->tag; |
10294 | cmd->scsi_done = fn; | |
10295 | cmd->result = DID_OK; | |
1da177e4 LT |
10296 | aic7xxx_error(cmd) = DID_OK; |
10297 | aic7xxx_status(cmd) = 0; | |
10298 | cmd->host_scribble = NULL; | |
10299 | ||
10300 | /* | |
10301 | * Construct the SCB beforehand, so the sequencer is | |
10302 | * paused a minimal amount of time. | |
10303 | */ | |
10304 | aic7xxx_buildscb(p, cmd, scb); | |
10305 | ||
10306 | scb->flags |= SCB_ACTIVE | SCB_WAITINGQ; | |
10307 | ||
10308 | scbq_insert_tail(&p->waiting_scbs, scb); | |
10309 | aic7xxx_run_waiting_queues(p); | |
10310 | return (0); | |
10311 | } | |
10312 | ||
10313 | /*+F************************************************************************* | |
10314 | * Function: | |
10315 | * aic7xxx_bus_device_reset | |
10316 | * | |
10317 | * Description: | |
10318 | * Abort or reset the current SCSI command(s). If the scb has not | |
10319 | * previously been aborted, then we attempt to send a BUS_DEVICE_RESET | |
10320 | * message to the target. If the scb has previously been unsuccessfully | |
10321 | * aborted, then we will reset the channel and have all devices renegotiate. | |
10322 | * Returns an enumerated type that indicates the status of the operation. | |
10323 | *-F*************************************************************************/ | |
c1278289 | 10324 | static int __aic7xxx_bus_device_reset(struct scsi_cmnd *cmd) |
1da177e4 LT |
10325 | { |
10326 | struct aic7xxx_host *p; | |
10327 | struct aic7xxx_scb *scb; | |
10328 | struct aic7xxx_hwscb *hscb; | |
10329 | int channel; | |
10330 | unsigned char saved_scbptr, lastphase; | |
10331 | unsigned char hscb_index; | |
10332 | int disconnected; | |
10333 | struct aic_dev_data *aic_dev; | |
10334 | ||
10335 | if(cmd == NULL) | |
10336 | { | |
10337 | printk(KERN_ERR "aic7xxx_bus_device_reset: called with NULL cmd!\n"); | |
10338 | return FAILED; | |
10339 | } | |
10340 | p = (struct aic7xxx_host *)cmd->device->host->hostdata; | |
10341 | aic_dev = AIC_DEV(cmd); | |
10342 | if(aic7xxx_position(cmd) < p->scb_data->numscbs) | |
10343 | scb = (p->scb_data->scb_array[aic7xxx_position(cmd)]); | |
10344 | else | |
10345 | return FAILED; | |
10346 | ||
10347 | hscb = scb->hscb; | |
10348 | ||
c7bec5ab | 10349 | aic7xxx_isr(p); |
1da177e4 LT |
10350 | aic7xxx_done_cmds_complete(p); |
10351 | /* If the command was already complete or just completed, then we didn't | |
10352 | * do a reset, return FAILED */ | |
10353 | if(!(scb->flags & SCB_ACTIVE)) | |
10354 | return FAILED; | |
10355 | ||
10356 | pause_sequencer(p); | |
10357 | lastphase = aic_inb(p, LASTPHASE); | |
10358 | if (aic7xxx_verbose & VERBOSE_RESET_PROCESS) | |
10359 | { | |
10360 | printk(INFO_LEAD "Bus Device reset, scb flags 0x%x, ", | |
10361 | p->host_no, CTL_OF_SCB(scb), scb->flags); | |
10362 | switch (lastphase) | |
10363 | { | |
10364 | case P_DATAOUT: | |
10365 | printk("Data-Out phase\n"); | |
10366 | break; | |
10367 | case P_DATAIN: | |
10368 | printk("Data-In phase\n"); | |
10369 | break; | |
10370 | case P_COMMAND: | |
10371 | printk("Command phase\n"); | |
10372 | break; | |
10373 | case P_MESGOUT: | |
10374 | printk("Message-Out phase\n"); | |
10375 | break; | |
10376 | case P_STATUS: | |
10377 | printk("Status phase\n"); | |
10378 | break; | |
10379 | case P_MESGIN: | |
10380 | printk("Message-In phase\n"); | |
10381 | break; | |
10382 | default: | |
10383 | /* | |
10384 | * We're not in a valid phase, so assume we're idle. | |
10385 | */ | |
10386 | printk("while idle, LASTPHASE = 0x%x\n", lastphase); | |
10387 | break; | |
10388 | } | |
10389 | printk(INFO_LEAD "SCSISIGI 0x%x, SEQADDR 0x%x, SSTAT0 0x%x, SSTAT1 " | |
10390 | "0x%x\n", p->host_no, CTL_OF_SCB(scb), | |
10391 | aic_inb(p, SCSISIGI), | |
10392 | aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8), | |
10393 | aic_inb(p, SSTAT0), aic_inb(p, SSTAT1)); | |
10394 | printk(INFO_LEAD "SG_CACHEPTR 0x%x, SSTAT2 0x%x, STCNT 0x%x\n", p->host_no, | |
10395 | CTL_OF_SCB(scb), | |
10396 | (p->features & AHC_ULTRA2) ? aic_inb(p, SG_CACHEPTR) : 0, | |
10397 | aic_inb(p, SSTAT2), | |
10398 | aic_inb(p, STCNT + 2) << 16 | aic_inb(p, STCNT + 1) << 8 | | |
10399 | aic_inb(p, STCNT)); | |
10400 | } | |
10401 | ||
10402 | channel = cmd->device->channel; | |
10403 | ||
10404 | /* | |
10405 | * Send a Device Reset Message: | |
10406 | * The target that is holding up the bus may not be the same as | |
10407 | * the one that triggered this timeout (different commands have | |
10408 | * different timeout lengths). Our strategy here is to queue an | |
10409 | * abort message to the timed out target if it is disconnected. | |
10410 | * Otherwise, if we have an active target we stuff the message buffer | |
10411 | * with an abort message and assert ATN in the hopes that the target | |
10412 | * will let go of the bus and go to the mesgout phase. If this | |
10413 | * fails, we'll get another timeout a few seconds later which will | |
10414 | * attempt a bus reset. | |
10415 | */ | |
10416 | saved_scbptr = aic_inb(p, SCBPTR); | |
10417 | disconnected = FALSE; | |
10418 | ||
10419 | if (lastphase != P_BUSFREE) | |
10420 | { | |
10421 | if (aic_inb(p, SCB_TAG) >= p->scb_data->numscbs) | |
10422 | { | |
10423 | printk(WARN_LEAD "Invalid SCB ID %d is active, " | |
10424 | "SCB flags = 0x%x.\n", p->host_no, | |
10425 | CTL_OF_CMD(cmd), scb->hscb->tag, scb->flags); | |
10426 | unpause_sequencer(p, FALSE); | |
10427 | return FAILED; | |
10428 | } | |
10429 | if (scb->hscb->tag == aic_inb(p, SCB_TAG)) | |
10430 | { | |
10431 | if ( (lastphase == P_MESGOUT) || (lastphase == P_MESGIN) ) | |
10432 | { | |
10433 | printk(WARN_LEAD "Device reset, Message buffer " | |
10434 | "in use\n", p->host_no, CTL_OF_SCB(scb)); | |
10435 | unpause_sequencer(p, FALSE); | |
10436 | return FAILED; | |
10437 | } | |
10438 | ||
10439 | if (aic7xxx_verbose & VERBOSE_RESET_PROCESS) | |
10440 | printk(INFO_LEAD "Device reset message in " | |
10441 | "message buffer\n", p->host_no, CTL_OF_SCB(scb)); | |
10442 | scb->flags |= SCB_RESET | SCB_DEVICE_RESET; | |
10443 | aic7xxx_error(cmd) = DID_RESET; | |
10444 | aic_dev->flags |= BUS_DEVICE_RESET_PENDING; | |
10445 | /* Send the abort message to the active SCB. */ | |
10446 | aic_outb(p, HOST_MSG, MSG_OUT); | |
10447 | aic_outb(p, lastphase | ATNO, SCSISIGO); | |
10448 | unpause_sequencer(p, FALSE); | |
10449 | spin_unlock_irq(p->host->host_lock); | |
10450 | ssleep(1); | |
10451 | spin_lock_irq(p->host->host_lock); | |
10452 | if(aic_dev->flags & BUS_DEVICE_RESET_PENDING) | |
10453 | return FAILED; | |
10454 | else | |
10455 | return SUCCESS; | |
10456 | } | |
10457 | } /* if (last_phase != P_BUSFREE).....indicates we are idle and can work */ | |
10458 | /* | |
10459 | * Simply set the MK_MESSAGE flag and the SEQINT handler will do | |
10460 | * the rest on a reconnect/connect. | |
10461 | */ | |
10462 | scb->hscb->control |= MK_MESSAGE; | |
10463 | scb->flags |= SCB_RESET | SCB_DEVICE_RESET; | |
10464 | aic_dev->flags |= BUS_DEVICE_RESET_PENDING; | |
10465 | /* | |
10466 | * Check to see if the command is on the qinfifo. If it is, then we will | |
10467 | * not need to queue the command again since the card should start it soon | |
10468 | */ | |
10469 | if (aic7xxx_search_qinfifo(p, cmd->device->channel, cmd->device->id, cmd->device->lun, hscb->tag, | |
10470 | 0, TRUE, NULL) == 0) | |
10471 | { | |
10472 | disconnected = TRUE; | |
10473 | if ((hscb_index = aic7xxx_find_scb(p, scb)) != SCB_LIST_NULL) | |
10474 | { | |
10475 | unsigned char scb_control; | |
10476 | ||
10477 | aic_outb(p, hscb_index, SCBPTR); | |
10478 | scb_control = aic_inb(p, SCB_CONTROL); | |
10479 | /* | |
10480 | * If the DISCONNECTED bit is not set in SCB_CONTROL, then we are | |
10481 | * actually on the waiting list, not disconnected, and we don't | |
10482 | * need to requeue the command. | |
10483 | */ | |
10484 | disconnected = (scb_control & DISCONNECTED); | |
10485 | aic_outb(p, scb_control | MK_MESSAGE, SCB_CONTROL); | |
10486 | } | |
10487 | if (disconnected) | |
10488 | { | |
10489 | /* | |
10490 | * Actually requeue this SCB in case we can select the | |
10491 | * device before it reconnects. This can result in the command | |
10492 | * being on the qinfifo twice, but we don't care because it will | |
10493 | * all get cleaned up if/when the reset takes place. | |
10494 | */ | |
10495 | if (aic7xxx_verbose & VERBOSE_RESET_PROCESS) | |
10496 | printk(INFO_LEAD "Queueing device reset command.\n", p->host_no, | |
10497 | CTL_OF_SCB(scb)); | |
10498 | p->qinfifo[p->qinfifonext++] = scb->hscb->tag; | |
10499 | if (p->features & AHC_QUEUE_REGS) | |
10500 | aic_outb(p, p->qinfifonext, HNSCB_QOFF); | |
10501 | else | |
10502 | aic_outb(p, p->qinfifonext, KERNEL_QINPOS); | |
10503 | scb->flags |= SCB_QUEUED_ABORT; | |
10504 | } | |
10505 | } | |
10506 | aic_outb(p, saved_scbptr, SCBPTR); | |
10507 | unpause_sequencer(p, FALSE); | |
10508 | spin_unlock_irq(p->host->host_lock); | |
10509 | msleep(1000/4); | |
10510 | spin_lock_irq(p->host->host_lock); | |
10511 | if(aic_dev->flags & BUS_DEVICE_RESET_PENDING) | |
10512 | return FAILED; | |
10513 | else | |
10514 | return SUCCESS; | |
10515 | } | |
10516 | ||
c1278289 | 10517 | static int aic7xxx_bus_device_reset(struct scsi_cmnd *cmd) |
94d0e7b8 JG |
10518 | { |
10519 | int rc; | |
10520 | ||
10521 | spin_lock_irq(cmd->device->host->host_lock); | |
10522 | rc = __aic7xxx_bus_device_reset(cmd); | |
10523 | spin_unlock_irq(cmd->device->host->host_lock); | |
10524 | ||
10525 | return rc; | |
10526 | } | |
10527 | ||
1da177e4 LT |
10528 | |
10529 | /*+F************************************************************************* | |
10530 | * Function: | |
10531 | * aic7xxx_panic_abort | |
10532 | * | |
10533 | * Description: | |
10534 | * Abort the current SCSI command(s). | |
10535 | *-F*************************************************************************/ | |
c1278289 | 10536 | static void aic7xxx_panic_abort(struct aic7xxx_host *p, struct scsi_cmnd *cmd) |
1da177e4 LT |
10537 | { |
10538 | ||
10539 | printk("aic7xxx driver version %s\n", AIC7XXX_C_VERSION); | |
10540 | printk("Controller type:\n %s\n", board_names[p->board_name_index]); | |
10541 | printk("p->flags=0x%lx, p->chip=0x%x, p->features=0x%x, " | |
10542 | "sequencer %s paused\n", | |
10543 | p->flags, p->chip, p->features, | |
10544 | (aic_inb(p, HCNTRL) & PAUSE) ? "is" : "isn't" ); | |
10545 | pause_sequencer(p); | |
10546 | disable_irq(p->irq); | |
10547 | aic7xxx_print_card(p); | |
10548 | aic7xxx_print_scratch_ram(p); | |
10549 | spin_unlock_irq(p->host->host_lock); | |
10550 | for(;;) barrier(); | |
10551 | } | |
10552 | ||
10553 | /*+F************************************************************************* | |
10554 | * Function: | |
10555 | * aic7xxx_abort | |
10556 | * | |
10557 | * Description: | |
10558 | * Abort the current SCSI command(s). | |
10559 | *-F*************************************************************************/ | |
c1278289 | 10560 | static int __aic7xxx_abort(struct scsi_cmnd *cmd) |
1da177e4 LT |
10561 | { |
10562 | struct aic7xxx_scb *scb = NULL; | |
10563 | struct aic7xxx_host *p; | |
10564 | int found=0, disconnected; | |
10565 | unsigned char saved_hscbptr, hscbptr, scb_control; | |
10566 | struct aic_dev_data *aic_dev; | |
10567 | ||
10568 | if(cmd == NULL) | |
10569 | { | |
10570 | printk(KERN_ERR "aic7xxx_abort: called with NULL cmd!\n"); | |
10571 | return FAILED; | |
10572 | } | |
10573 | p = (struct aic7xxx_host *)cmd->device->host->hostdata; | |
10574 | aic_dev = AIC_DEV(cmd); | |
10575 | if(aic7xxx_position(cmd) < p->scb_data->numscbs) | |
10576 | scb = (p->scb_data->scb_array[aic7xxx_position(cmd)]); | |
10577 | else | |
10578 | return FAILED; | |
10579 | ||
c7bec5ab | 10580 | aic7xxx_isr(p); |
1da177e4 LT |
10581 | aic7xxx_done_cmds_complete(p); |
10582 | /* If the command was already complete or just completed, then we didn't | |
10583 | * do a reset, return FAILED */ | |
10584 | if(!(scb->flags & SCB_ACTIVE)) | |
10585 | return FAILED; | |
10586 | ||
10587 | pause_sequencer(p); | |
10588 | ||
10589 | /* | |
10590 | * I added a new config option to the driver: "panic_on_abort" that will | |
10591 | * cause the driver to panic and the machine to stop on the first abort | |
10592 | * or reset call into the driver. At that point, it prints out a lot of | |
10593 | * useful information for me which I can then use to try and debug the | |
10594 | * problem. Simply enable the boot time prompt in order to activate this | |
10595 | * code. | |
10596 | */ | |
10597 | if (aic7xxx_panic_on_abort) | |
10598 | aic7xxx_panic_abort(p, cmd); | |
10599 | ||
10600 | if (aic7xxx_verbose & VERBOSE_ABORT) | |
10601 | { | |
10602 | printk(INFO_LEAD "Aborting scb %d, flags 0x%x, SEQADDR 0x%x, LASTPHASE " | |
10603 | "0x%x\n", | |
10604 | p->host_no, CTL_OF_SCB(scb), scb->hscb->tag, scb->flags, | |
10605 | aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8), | |
10606 | aic_inb(p, LASTPHASE)); | |
10607 | printk(INFO_LEAD "SG_CACHEPTR 0x%x, SG_COUNT %d, SCSISIGI 0x%x\n", | |
10608 | p->host_no, CTL_OF_SCB(scb), (p->features & AHC_ULTRA2) ? | |
10609 | aic_inb(p, SG_CACHEPTR) : 0, aic_inb(p, SG_COUNT), | |
10610 | aic_inb(p, SCSISIGI)); | |
10611 | printk(INFO_LEAD "SSTAT0 0x%x, SSTAT1 0x%x, SSTAT2 0x%x\n", | |
10612 | p->host_no, CTL_OF_SCB(scb), aic_inb(p, SSTAT0), | |
10613 | aic_inb(p, SSTAT1), aic_inb(p, SSTAT2)); | |
10614 | } | |
10615 | ||
10616 | if (scb->flags & SCB_WAITINGQ) | |
10617 | { | |
10618 | if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS) | |
10619 | printk(INFO_LEAD "SCB found on waiting list and " | |
10620 | "aborted.\n", p->host_no, CTL_OF_SCB(scb)); | |
10621 | scbq_remove(&p->waiting_scbs, scb); | |
10622 | scbq_remove(&aic_dev->delayed_scbs, scb); | |
10623 | aic_dev->active_cmds++; | |
10624 | p->activescbs++; | |
10625 | scb->flags &= ~(SCB_WAITINGQ | SCB_ACTIVE); | |
10626 | scb->flags |= SCB_ABORT | SCB_QUEUED_FOR_DONE; | |
10627 | goto success; | |
10628 | } | |
10629 | ||
10630 | /* | |
10631 | * We just checked the waiting_q, now for the QINFIFO | |
10632 | */ | |
10633 | if ( ((found = aic7xxx_search_qinfifo(p, cmd->device->id, cmd->device->channel, | |
10634 | cmd->device->lun, scb->hscb->tag, SCB_ABORT | SCB_QUEUED_FOR_DONE, | |
10635 | FALSE, NULL)) != 0) && | |
10636 | (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)) | |
10637 | { | |
10638 | printk(INFO_LEAD "SCB found in QINFIFO and aborted.\n", p->host_no, | |
10639 | CTL_OF_SCB(scb)); | |
10640 | goto success; | |
10641 | } | |
10642 | ||
10643 | /* | |
10644 | * QINFIFO, waitingq, completeq done. Next, check WAITING_SCB list in card | |
10645 | */ | |
10646 | ||
10647 | saved_hscbptr = aic_inb(p, SCBPTR); | |
10648 | if ((hscbptr = aic7xxx_find_scb(p, scb)) != SCB_LIST_NULL) | |
10649 | { | |
10650 | aic_outb(p, hscbptr, SCBPTR); | |
10651 | scb_control = aic_inb(p, SCB_CONTROL); | |
10652 | disconnected = scb_control & DISCONNECTED; | |
10653 | /* | |
10654 | * If the DISCONNECTED bit is not set in SCB_CONTROL, then we are | |
10655 | * either currently active or on the waiting list. | |
10656 | */ | |
10657 | if(!disconnected && aic_inb(p, LASTPHASE) == P_BUSFREE) { | |
10658 | if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS) | |
10659 | printk(INFO_LEAD "SCB found on hardware waiting" | |
10660 | " list and aborted.\n", p->host_no, CTL_OF_SCB(scb)); | |
10661 | /* If we are the only waiting command, stop the selection engine */ | |
10662 | if (aic_inb(p, WAITING_SCBH) == hscbptr && aic_inb(p, SCB_NEXT) == | |
10663 | SCB_LIST_NULL) | |
10664 | { | |
10665 | aic_outb(p, aic_inb(p, SCSISEQ) & ~ENSELO, SCSISEQ); | |
10666 | aic_outb(p, CLRSELTIMEO, CLRSINT1); | |
10667 | aic_outb(p, SCB_LIST_NULL, WAITING_SCBH); | |
10668 | } | |
10669 | else | |
10670 | { | |
10671 | unsigned char prev, next; | |
10672 | prev = SCB_LIST_NULL; | |
10673 | next = aic_inb(p, WAITING_SCBH); | |
10674 | while(next != SCB_LIST_NULL) | |
10675 | { | |
10676 | aic_outb(p, next, SCBPTR); | |
10677 | if (next == hscbptr) | |
10678 | { | |
10679 | next = aic_inb(p, SCB_NEXT); | |
10680 | if (prev != SCB_LIST_NULL) | |
10681 | { | |
10682 | aic_outb(p, prev, SCBPTR); | |
10683 | aic_outb(p, next, SCB_NEXT); | |
10684 | } | |
10685 | else | |
10686 | aic_outb(p, next, WAITING_SCBH); | |
10687 | aic_outb(p, hscbptr, SCBPTR); | |
10688 | next = SCB_LIST_NULL; | |
10689 | } | |
10690 | else | |
10691 | { | |
10692 | prev = next; | |
10693 | next = aic_inb(p, SCB_NEXT); | |
10694 | } | |
10695 | } | |
10696 | } | |
10697 | aic_outb(p, SCB_LIST_NULL, SCB_TAG); | |
10698 | aic_outb(p, 0, SCB_CONTROL); | |
10699 | aic7xxx_add_curscb_to_free_list(p); | |
10700 | scb->flags = SCB_ABORT | SCB_QUEUED_FOR_DONE; | |
10701 | goto success; | |
10702 | } | |
10703 | else if (!disconnected) | |
10704 | { | |
10705 | /* | |
10706 | * We are the currently active command | |
10707 | */ | |
10708 | if((aic_inb(p, LASTPHASE) == P_MESGIN) || | |
10709 | (aic_inb(p, LASTPHASE) == P_MESGOUT)) | |
10710 | { | |
10711 | /* | |
10712 | * Message buffer busy, unable to abort | |
10713 | */ | |
10714 | printk(INFO_LEAD "message buffer busy, unable to abort.\n", | |
10715 | p->host_no, CTL_OF_SCB(scb)); | |
10716 | unpause_sequencer(p, FALSE); | |
10717 | return FAILED; | |
10718 | } | |
10719 | /* Fallthrough to below, set ATNO after we set SCB_CONTROL */ | |
10720 | } | |
10721 | aic_outb(p, scb_control | MK_MESSAGE, SCB_CONTROL); | |
10722 | if(!disconnected) | |
10723 | { | |
10724 | aic_outb(p, HOST_MSG, MSG_OUT); | |
10725 | aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO); | |
10726 | } | |
10727 | aic_outb(p, saved_hscbptr, SCBPTR); | |
10728 | } | |
10729 | else | |
10730 | { | |
10731 | /* | |
10732 | * The scb isn't in the card at all and it is active and it isn't in | |
10733 | * any of the queues, so it must be disconnected and paged out. Fall | |
10734 | * through to the code below. | |
10735 | */ | |
10736 | disconnected = 1; | |
10737 | } | |
10738 | ||
10739 | p->flags |= AHC_ABORT_PENDING; | |
10740 | scb->flags |= SCB_QUEUED_ABORT | SCB_ABORT | SCB_RECOVERY_SCB; | |
10741 | scb->hscb->control |= MK_MESSAGE; | |
10742 | if(disconnected) | |
10743 | { | |
10744 | if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS) | |
10745 | printk(INFO_LEAD "SCB disconnected. Queueing Abort" | |
10746 | " SCB.\n", p->host_no, CTL_OF_SCB(scb)); | |
10747 | p->qinfifo[p->qinfifonext++] = scb->hscb->tag; | |
10748 | if (p->features & AHC_QUEUE_REGS) | |
10749 | aic_outb(p, p->qinfifonext, HNSCB_QOFF); | |
10750 | else | |
10751 | aic_outb(p, p->qinfifonext, KERNEL_QINPOS); | |
10752 | } | |
10753 | unpause_sequencer(p, FALSE); | |
10754 | spin_unlock_irq(p->host->host_lock); | |
10755 | msleep(1000/4); | |
10756 | spin_lock_irq(p->host->host_lock); | |
10757 | if (p->flags & AHC_ABORT_PENDING) | |
10758 | { | |
10759 | if (aic7xxx_verbose & VERBOSE_ABORT_RETURN) | |
10760 | printk(INFO_LEAD "Abort never delivered, returning FAILED\n", p->host_no, | |
10761 | CTL_OF_CMD(cmd)); | |
10762 | p->flags &= ~AHC_ABORT_PENDING; | |
10763 | return FAILED; | |
10764 | } | |
10765 | if (aic7xxx_verbose & VERBOSE_ABORT_RETURN) | |
10766 | printk(INFO_LEAD "Abort successful.\n", p->host_no, CTL_OF_CMD(cmd)); | |
10767 | return SUCCESS; | |
10768 | ||
10769 | success: | |
10770 | if (aic7xxx_verbose & VERBOSE_ABORT_RETURN) | |
10771 | printk(INFO_LEAD "Abort successful.\n", p->host_no, CTL_OF_CMD(cmd)); | |
10772 | aic7xxx_run_done_queue(p, TRUE); | |
10773 | unpause_sequencer(p, FALSE); | |
10774 | return SUCCESS; | |
10775 | } | |
10776 | ||
c1278289 | 10777 | static int aic7xxx_abort(struct scsi_cmnd *cmd) |
8fa728a2 JG |
10778 | { |
10779 | int rc; | |
10780 | ||
10781 | spin_lock_irq(cmd->device->host->host_lock); | |
10782 | rc = __aic7xxx_abort(cmd); | |
10783 | spin_unlock_irq(cmd->device->host->host_lock); | |
10784 | ||
10785 | return rc; | |
10786 | } | |
10787 | ||
10788 | ||
1da177e4 LT |
10789 | /*+F************************************************************************* |
10790 | * Function: | |
10791 | * aic7xxx_reset | |
10792 | * | |
10793 | * Description: | |
10794 | * Resetting the bus always succeeds - is has to, otherwise the | |
10795 | * kernel will panic! Try a surgical technique - sending a BUS | |
10796 | * DEVICE RESET message - on the offending target before pulling | |
10797 | * the SCSI bus reset line. | |
10798 | *-F*************************************************************************/ | |
c1278289 | 10799 | static int aic7xxx_reset(struct scsi_cmnd *cmd) |
1da177e4 LT |
10800 | { |
10801 | struct aic7xxx_scb *scb; | |
10802 | struct aic7xxx_host *p; | |
10803 | struct aic_dev_data *aic_dev; | |
10804 | ||
10805 | p = (struct aic7xxx_host *) cmd->device->host->hostdata; | |
df0ae249 JG |
10806 | spin_lock_irq(p->host->host_lock); |
10807 | ||
1da177e4 LT |
10808 | aic_dev = AIC_DEV(cmd); |
10809 | if(aic7xxx_position(cmd) < p->scb_data->numscbs) | |
10810 | { | |
10811 | scb = (p->scb_data->scb_array[aic7xxx_position(cmd)]); | |
10812 | if (scb->cmd != cmd) | |
10813 | scb = NULL; | |
10814 | } | |
10815 | else | |
10816 | { | |
10817 | scb = NULL; | |
10818 | } | |
10819 | ||
10820 | /* | |
10821 | * I added a new config option to the driver: "panic_on_abort" that will | |
10822 | * cause the driver to panic and the machine to stop on the first abort | |
10823 | * or reset call into the driver. At that point, it prints out a lot of | |
10824 | * useful information for me which I can then use to try and debug the | |
10825 | * problem. Simply enable the boot time prompt in order to activate this | |
10826 | * code. | |
10827 | */ | |
10828 | if (aic7xxx_panic_on_abort) | |
10829 | aic7xxx_panic_abort(p, cmd); | |
10830 | ||
10831 | pause_sequencer(p); | |
10832 | ||
10833 | while((aic_inb(p, INTSTAT) & INT_PEND) && !(p->flags & AHC_IN_ISR)) | |
10834 | { | |
c7bec5ab | 10835 | aic7xxx_isr(p); |
1da177e4 LT |
10836 | pause_sequencer(p); |
10837 | } | |
10838 | aic7xxx_done_cmds_complete(p); | |
10839 | ||
10840 | if(scb && (scb->cmd == NULL)) | |
10841 | { | |
10842 | /* | |
10843 | * We just completed the command when we ran the isr stuff, so we no | |
10844 | * longer have it. | |
10845 | */ | |
10846 | unpause_sequencer(p, FALSE); | |
df0ae249 | 10847 | spin_unlock_irq(p->host->host_lock); |
1da177e4 LT |
10848 | return SUCCESS; |
10849 | } | |
10850 | ||
10851 | /* | |
10852 | * By this point, we want to already know what we are going to do and | |
10853 | * only have the following code implement our course of action. | |
10854 | */ | |
10855 | aic7xxx_reset_channel(p, cmd->device->channel, TRUE); | |
10856 | if (p->features & AHC_TWIN) | |
10857 | { | |
10858 | aic7xxx_reset_channel(p, cmd->device->channel ^ 0x01, TRUE); | |
10859 | restart_sequencer(p); | |
10860 | } | |
10861 | aic_outb(p, aic_inb(p, SIMODE1) & ~(ENREQINIT|ENBUSFREE), SIMODE1); | |
10862 | aic7xxx_clear_intstat(p); | |
10863 | p->flags &= ~AHC_HANDLING_REQINITS; | |
10864 | p->msg_type = MSG_TYPE_NONE; | |
10865 | p->msg_index = 0; | |
10866 | p->msg_len = 0; | |
10867 | aic7xxx_run_done_queue(p, TRUE); | |
10868 | unpause_sequencer(p, FALSE); | |
10869 | spin_unlock_irq(p->host->host_lock); | |
10870 | ssleep(2); | |
1da177e4 LT |
10871 | return SUCCESS; |
10872 | } | |
10873 | ||
10874 | /*+F************************************************************************* | |
10875 | * Function: | |
10876 | * aic7xxx_biosparam | |
10877 | * | |
10878 | * Description: | |
10879 | * Return the disk geometry for the given SCSI device. | |
10880 | * | |
10881 | * Note: | |
10882 | * This function is broken for today's really large drives and needs | |
10883 | * fixed. | |
10884 | *-F*************************************************************************/ | |
10885 | static int | |
10886 | aic7xxx_biosparam(struct scsi_device *sdev, struct block_device *bdev, | |
10887 | sector_t capacity, int geom[]) | |
10888 | { | |
10889 | sector_t heads, sectors, cylinders; | |
10890 | int ret; | |
10891 | struct aic7xxx_host *p; | |
10892 | unsigned char *buf; | |
10893 | ||
10894 | p = (struct aic7xxx_host *) sdev->host->hostdata; | |
10895 | buf = scsi_bios_ptable(bdev); | |
10896 | ||
10897 | if ( buf ) | |
10898 | { | |
10899 | ret = scsi_partsize(buf, capacity, &geom[2], &geom[0], &geom[1]); | |
10900 | kfree(buf); | |
10901 | if ( ret != -1 ) | |
10902 | return(ret); | |
10903 | } | |
10904 | ||
10905 | heads = 64; | |
10906 | sectors = 32; | |
10907 | cylinders = capacity >> 11; | |
10908 | ||
10909 | if ((p->flags & AHC_EXTEND_TRANS_A) && (cylinders > 1024)) | |
10910 | { | |
10911 | heads = 255; | |
10912 | sectors = 63; | |
10913 | cylinders = capacity >> 14; | |
10914 | if(capacity > (65535 * heads * sectors)) | |
10915 | cylinders = 65535; | |
10916 | else | |
10917 | cylinders = ((unsigned int)capacity) / (unsigned int)(heads * sectors); | |
10918 | } | |
10919 | ||
10920 | geom[0] = (int)heads; | |
10921 | geom[1] = (int)sectors; | |
10922 | geom[2] = (int)cylinders; | |
10923 | ||
10924 | return (0); | |
10925 | } | |
10926 | ||
10927 | /*+F************************************************************************* | |
10928 | * Function: | |
10929 | * aic7xxx_release | |
10930 | * | |
10931 | * Description: | |
10932 | * Free the passed in Scsi_Host memory structures prior to unloading the | |
10933 | * module. | |
10934 | *-F*************************************************************************/ | |
10935 | static int | |
10936 | aic7xxx_release(struct Scsi_Host *host) | |
10937 | { | |
10938 | struct aic7xxx_host *p = (struct aic7xxx_host *) host->hostdata; | |
10939 | struct aic7xxx_host *next, *prev; | |
10940 | ||
10941 | if(p->irq) | |
10942 | free_irq(p->irq, p); | |
10943 | #ifdef MMAPIO | |
10944 | if(p->maddr) | |
10945 | { | |
10946 | iounmap(p->maddr); | |
10947 | } | |
10948 | #endif /* MMAPIO */ | |
10949 | if(!p->pdev) | |
10950 | release_region(p->base, MAXREG - MINREG); | |
10951 | #ifdef CONFIG_PCI | |
a07f3537 | 10952 | else { |
1da177e4 | 10953 | pci_release_regions(p->pdev); |
a07f3537 AC |
10954 | pci_dev_put(p->pdev); |
10955 | } | |
1da177e4 LT |
10956 | #endif |
10957 | prev = NULL; | |
10958 | next = first_aic7xxx; | |
10959 | while(next != NULL) | |
10960 | { | |
10961 | if(next == p) | |
10962 | { | |
10963 | if(prev == NULL) | |
10964 | first_aic7xxx = next->next; | |
10965 | else | |
10966 | prev->next = next->next; | |
10967 | } | |
10968 | else | |
10969 | { | |
10970 | prev = next; | |
10971 | } | |
10972 | next = next->next; | |
10973 | } | |
10974 | aic7xxx_free(p); | |
10975 | return(0); | |
10976 | } | |
10977 | ||
10978 | /*+F************************************************************************* | |
10979 | * Function: | |
10980 | * aic7xxx_print_card | |
10981 | * | |
10982 | * Description: | |
10983 | * Print out all of the control registers on the card | |
10984 | * | |
10985 | * NOTE: This function is not yet safe for use on the VLB and EISA | |
10986 | * controllers, so it isn't used on those controllers at all. | |
10987 | *-F*************************************************************************/ | |
10988 | static void | |
10989 | aic7xxx_print_card(struct aic7xxx_host *p) | |
10990 | { | |
10991 | int i, j, k, chip; | |
10992 | static struct register_ranges { | |
10993 | int num_ranges; | |
10994 | int range_val[32]; | |
10995 | } cards_ds[] = { | |
10996 | { 0, {0,} }, /* none */ | |
10997 | {10, {0x00, 0x05, 0x08, 0x11, 0x18, 0x19, 0x1f, 0x1f, 0x60, 0x60, /*7771*/ | |
10998 | 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9b, 0x9f} }, | |
10999 | { 9, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7850*/ | |
11000 | 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} }, | |
11001 | { 9, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7860*/ | |
11002 | 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} }, | |
11003 | {10, {0x00, 0x05, 0x08, 0x11, 0x18, 0x19, 0x1c, 0x1f, 0x60, 0x60, /*7870*/ | |
11004 | 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} }, | |
11005 | {10, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1a, 0x1c, 0x1f, 0x60, 0x60, /*7880*/ | |
11006 | 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} }, | |
11007 | {16, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7890*/ | |
11008 | 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9f, 0x9f, | |
11009 | 0xe0, 0xf1, 0xf4, 0xf4, 0xf6, 0xf6, 0xf8, 0xf8, 0xfa, 0xfc, | |
11010 | 0xfe, 0xff} }, | |
11011 | {12, {0x00, 0x05, 0x08, 0x11, 0x18, 0x19, 0x1b, 0x1f, 0x60, 0x60, /*7895*/ | |
11012 | 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, | |
11013 | 0x9f, 0x9f, 0xe0, 0xf1} }, | |
11014 | {16, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7896*/ | |
11015 | 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9f, 0x9f, | |
11016 | 0xe0, 0xf1, 0xf4, 0xf4, 0xf6, 0xf6, 0xf8, 0xf8, 0xfa, 0xfc, | |
11017 | 0xfe, 0xff} }, | |
11018 | {12, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7892*/ | |
11019 | 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9c, 0x9f, | |
11020 | 0xe0, 0xf1, 0xf4, 0xfc} }, | |
11021 | {12, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7899*/ | |
11022 | 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9c, 0x9f, | |
11023 | 0xe0, 0xf1, 0xf4, 0xfc} }, | |
11024 | }; | |
11025 | chip = p->chip & AHC_CHIPID_MASK; | |
11026 | printk("%s at ", | |
11027 | board_names[p->board_name_index]); | |
11028 | switch(p->chip & ~AHC_CHIPID_MASK) | |
11029 | { | |
11030 | case AHC_VL: | |
11031 | printk("VLB Slot %d.\n", p->pci_device_fn); | |
11032 | break; | |
11033 | case AHC_EISA: | |
11034 | printk("EISA Slot %d.\n", p->pci_device_fn); | |
11035 | break; | |
11036 | case AHC_PCI: | |
11037 | default: | |
11038 | printk("PCI %d/%d/%d.\n", p->pci_bus, PCI_SLOT(p->pci_device_fn), | |
11039 | PCI_FUNC(p->pci_device_fn)); | |
11040 | break; | |
11041 | } | |
11042 | ||
11043 | /* | |
11044 | * the registers on the card.... | |
11045 | */ | |
11046 | printk("Card Dump:\n"); | |
11047 | k = 0; | |
11048 | for(i=0; i<cards_ds[chip].num_ranges; i++) | |
11049 | { | |
11050 | for(j = cards_ds[chip].range_val[ i * 2 ]; | |
11051 | j <= cards_ds[chip].range_val[ i * 2 + 1 ] ; | |
11052 | j++) | |
11053 | { | |
11054 | printk("%02x:%02x ", j, aic_inb(p, j)); | |
11055 | if(++k == 13) | |
11056 | { | |
11057 | printk("\n"); | |
11058 | k=0; | |
11059 | } | |
11060 | } | |
11061 | } | |
11062 | if(k != 0) | |
11063 | printk("\n"); | |
11064 | ||
11065 | /* | |
11066 | * If this was an Ultra2 controller, then we just hosed the card in terms | |
11067 | * of the QUEUE REGS. This function is only called at init time or by | |
11068 | * the panic_abort function, so it's safe to assume a generic init time | |
11069 | * setting here | |
11070 | */ | |
11071 | ||
11072 | if(p->features & AHC_QUEUE_REGS) | |
11073 | { | |
11074 | aic_outb(p, 0, SDSCB_QOFF); | |
11075 | aic_outb(p, 0, SNSCB_QOFF); | |
11076 | aic_outb(p, 0, HNSCB_QOFF); | |
11077 | } | |
11078 | ||
11079 | } | |
11080 | ||
11081 | /*+F************************************************************************* | |
11082 | * Function: | |
11083 | * aic7xxx_print_scratch_ram | |
11084 | * | |
11085 | * Description: | |
11086 | * Print out the scratch RAM values on the card. | |
11087 | *-F*************************************************************************/ | |
11088 | static void | |
11089 | aic7xxx_print_scratch_ram(struct aic7xxx_host *p) | |
11090 | { | |
11091 | int i, k; | |
11092 | ||
11093 | k = 0; | |
11094 | printk("Scratch RAM:\n"); | |
11095 | for(i = SRAM_BASE; i < SEQCTL; i++) | |
11096 | { | |
11097 | printk("%02x:%02x ", i, aic_inb(p, i)); | |
11098 | if(++k == 13) | |
11099 | { | |
11100 | printk("\n"); | |
11101 | k=0; | |
11102 | } | |
11103 | } | |
11104 | if (p->features & AHC_MORE_SRAM) | |
11105 | { | |
11106 | for(i = TARG_OFFSET; i < 0x80; i++) | |
11107 | { | |
11108 | printk("%02x:%02x ", i, aic_inb(p, i)); | |
11109 | if(++k == 13) | |
11110 | { | |
11111 | printk("\n"); | |
11112 | k=0; | |
11113 | } | |
11114 | } | |
11115 | } | |
11116 | printk("\n"); | |
11117 | } | |
11118 | ||
11119 | ||
11120 | #include "aic7xxx_old/aic7xxx_proc.c" | |
11121 | ||
11122 | MODULE_LICENSE("Dual BSD/GPL"); | |
11123 | MODULE_VERSION(AIC7XXX_H_VERSION); | |
11124 | ||
11125 | ||
d0be4a7d | 11126 | static struct scsi_host_template driver_template = { |
1da177e4 LT |
11127 | .proc_info = aic7xxx_proc_info, |
11128 | .detect = aic7xxx_detect, | |
11129 | .release = aic7xxx_release, | |
11130 | .info = aic7xxx_info, | |
11131 | .queuecommand = aic7xxx_queue, | |
11132 | .slave_alloc = aic7xxx_slave_alloc, | |
11133 | .slave_configure = aic7xxx_slave_configure, | |
11134 | .slave_destroy = aic7xxx_slave_destroy, | |
11135 | .bios_param = aic7xxx_biosparam, | |
11136 | .eh_abort_handler = aic7xxx_abort, | |
11137 | .eh_device_reset_handler = aic7xxx_bus_device_reset, | |
11138 | .eh_host_reset_handler = aic7xxx_reset, | |
11139 | .can_queue = 255, | |
11140 | .this_id = -1, | |
11141 | .max_sectors = 2048, | |
11142 | .cmd_per_lun = 3, | |
11143 | .use_clustering = ENABLE_CLUSTERING, | |
9cb83c75 | 11144 | .use_sg_chaining = ENABLE_SG_CHAINING, |
1da177e4 LT |
11145 | }; |
11146 | ||
11147 | #include "scsi_module.c" | |
11148 | ||
11149 | /* | |
11150 | * Overrides for Emacs so that we almost follow Linus's tabbing style. | |
11151 | * Emacs will notice this stuff at the end of the file and automatically | |
11152 | * adjust the settings for this buffer only. This must remain at the end | |
11153 | * of the file. | |
11154 | * --------------------------------------------------------------------------- | |
11155 | * Local variables: | |
11156 | * c-indent-level: 2 | |
11157 | * c-brace-imaginary-offset: 0 | |
11158 | * c-brace-offset: -2 | |
11159 | * c-argdecl-indent: 2 | |
11160 | * c-label-offset: -2 | |
11161 | * c-continued-statement-offset: 2 | |
11162 | * c-continued-brace-offset: 0 | |
11163 | * indent-tabs-mode: nil | |
11164 | * tab-width: 8 | |
11165 | * End: | |
11166 | */ |