1 /*+M*************************************************************************
2 * Adaptec AIC7xxx device driver for Linux.
4 * Copyright (c) 1994 John Aycock
5 * The University of Calgary Department of Computer Science.
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)
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.
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.
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), ...
30 * --------------------------------------------------------------------------
32 * Modifications by Daniel M. Eischen (deischen@iworks.InterWorks.org):
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.
38 * Parts of this driver were also based on the FreeBSD driver by
39 * Justin T. Gibbs. His copyright follows:
41 * --------------------------------------------------------------------------
42 * Copyright (c) 1994-1997 Justin Gibbs.
43 * All rights reserved.
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions
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.
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.
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
76 * $Id: aic7xxx.c,v 1.119 1997/06/27 19:39:18 gibbs Exp $
77 *---------------------------------------------------------------------------
79 * Thanks also go to (in alphabetical order) the following:
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
86 * A Boot time option was also added for not resetting the scsi bus.
88 * Form: aic7xxx=extended
91 * aic7xxx=irq_trigger:[0,1] # 0 edge, 1 level
94 * Daniel M. Eischen, deischen@iworks.InterWorks.org, 1/23/97
96 * $Id: aic7xxx.c,v 4.1 1997/06/12 08:23:42 deang Exp $
97 *-M*************************************************************************/
99 /*+M**************************************************************************
101 * Further driver modifications made by Doug Ledford <dledford@redhat.com>
103 * Copyright (c) 1997-1999 Doug Ledford
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.
110 * Modifications made to the aic7xxx.c,v 4.1 driver from Dan Eischen include
111 * but are not limited to:
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
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.
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.
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 :)
164 *_M*************************************************************************/
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.
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.
189 * OK...I need this on my machine for testing, so the default is to
193 * I needed it for testing, but it didn't make any difference, so back
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
202 #define AIC7XXX_STRICT_PCI_SETUP
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.
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.
219 * #define AIC7XXX_VERBOSE_DEBUGGING
222 #include <linux/module.h>
226 #include <asm/byteorder.h>
227 #include <linux/version.h>
228 #include <linux/string.h>
229 #include <linux/errno.h>
230 #include <linux/kernel.h>
231 #include <linux/ioport.h>
232 #include <linux/delay.h>
233 #include <linux/sched.h>
234 #include <linux/pci.h>
235 #include <linux/proc_fs.h>
236 #include <linux/blk.h>
237 #include <linux/init.h>
238 #include <linux/spinlock.h>
239 #include <linux/smp.h>
240 #include <linux/blk.h>
241 #include <linux/interrupt.h>
244 #include "aic7xxx_old/aic7xxx.h"
246 #include "aic7xxx_old/sequencer.h"
247 #include "aic7xxx_old/scsi_message.h"
248 #include "aic7xxx_old/aic7xxx_reg.h"
249 #include <scsi/scsicam.h>
251 #include <linux/stat.h>
252 #include <linux/slab.h> /* for kmalloc() */
254 #include <linux/config.h> /* for CONFIG_PCI */
256 #define AIC7XXX_C_VERSION "5.2.6"
258 #define NUMBER(arr) (sizeof(arr) / sizeof(arr[0]))
259 #define MIN(a,b) (((a) < (b)) ? (a) : (b))
260 #define MAX(a,b) (((a) > (b)) ? (a) : (b))
261 #define ALL_TARGETS -1
262 #define ALL_CHANNELS -1
264 #define MAX_TARGETS 16
273 #if defined(__powerpc__) || defined(__i386__) || defined(__x86_64__)
278 * You can try raising me for better performance or lowering me if you have
279 * flaky devices that go off the scsi bus when hit with too many tagged
280 * commands (like some IBM SCSI-3 LVD drives).
282 #define AIC7XXX_CMDS_PER_DEVICE 32
286 unsigned char tag_commands
[16]; /* Allow for wide/twin adapters. */
287 } adapter_tag_info_t
;
290 * Make a define that will tell the driver not to the default tag depth
293 #define DEFAULT_TAG_COMMANDS {0, 0, 0, 0, 0, 0, 0, 0,\
294 0, 0, 0, 0, 0, 0, 0, 0}
297 * Modify this as you see fit for your system. By setting tag_commands
298 * to 0, the driver will use it's own algorithm for determining the
299 * number of commands to use (see above). When 255, the driver will
300 * not enable tagged queueing for that particular device. When positive
301 * (> 0) and (< 255) the values in the array are used for the queue_depth.
302 * Note that the maximum value for an entry is 254, but you're insane if
303 * you try to use that many commands on one device.
305 * In this example, the first line will disable tagged queueing for all
306 * the devices on the first probed aic7xxx adapter.
308 * The second line enables tagged queueing with 4 commands/LUN for IDs
309 * (1, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
310 * driver to use its own algorithm for ID 1.
312 * The third line is the same as the first line.
314 * The fourth line disables tagged queueing for devices 0 and 3. It
315 * enables tagged queueing for the other IDs, with 16 commands/LUN
316 * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for
317 * IDs 2, 5-7, and 9-15.
321 * NOTE: The below structure is for reference only, the actual structure
322 * to modify in order to change things is found after this fake one.
324 adapter_tag_info_t aic7xxx_tag_info[] =
326 {DEFAULT_TAG_COMMANDS},
327 {{4, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 255, 4, 4, 4}},
328 {DEFAULT_TAG_COMMANDS},
329 {{255, 16, 4, 255, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}}
333 static adapter_tag_info_t aic7xxx_tag_info
[] =
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 {DEFAULT_TAG_COMMANDS
},
344 {DEFAULT_TAG_COMMANDS
},
345 {DEFAULT_TAG_COMMANDS
},
346 {DEFAULT_TAG_COMMANDS
},
347 {DEFAULT_TAG_COMMANDS
},
348 {DEFAULT_TAG_COMMANDS
},
349 {DEFAULT_TAG_COMMANDS
},
350 {DEFAULT_TAG_COMMANDS
}
355 * Define an array of board names that can be indexed by aha_type.
356 * Don't forget to change this when changing the types!
358 static const char *board_names
[] = {
359 "AIC-7xxx Unknown", /* AIC_NONE */
360 "Adaptec AIC-7810 Hardware RAID Controller", /* AIC_7810 */
361 "Adaptec AIC-7770 SCSI host adapter", /* AIC_7770 */
362 "Adaptec AHA-274X SCSI host adapter", /* AIC_7771 */
363 "Adaptec AHA-284X SCSI host adapter", /* AIC_284x */
364 "Adaptec AIC-7850 SCSI host adapter", /* AIC_7850 */
365 "Adaptec AIC-7855 SCSI host adapter", /* AIC_7855 */
366 "Adaptec AIC-7860 Ultra SCSI host adapter", /* AIC_7860 */
367 "Adaptec AHA-2940A Ultra SCSI host adapter", /* AIC_7861 */
368 "Adaptec AIC-7870 SCSI host adapter", /* AIC_7870 */
369 "Adaptec AHA-294X SCSI host adapter", /* AIC_7871 */
370 "Adaptec AHA-394X SCSI host adapter", /* AIC_7872 */
371 "Adaptec AHA-398X SCSI host adapter", /* AIC_7873 */
372 "Adaptec AHA-2944 SCSI host adapter", /* AIC_7874 */
373 "Adaptec AIC-7880 Ultra SCSI host adapter", /* AIC_7880 */
374 "Adaptec AHA-294X Ultra SCSI host adapter", /* AIC_7881 */
375 "Adaptec AHA-394X Ultra SCSI host adapter", /* AIC_7882 */
376 "Adaptec AHA-398X Ultra SCSI host adapter", /* AIC_7883 */
377 "Adaptec AHA-2944 Ultra SCSI host adapter", /* AIC_7884 */
378 "Adaptec AHA-2940UW Pro Ultra SCSI host adapter", /* AIC_7887 */
379 "Adaptec AIC-7895 Ultra SCSI host adapter", /* AIC_7895 */
380 "Adaptec AIC-7890/1 Ultra2 SCSI host adapter", /* AIC_7890 */
381 "Adaptec AHA-293X Ultra2 SCSI host adapter", /* AIC_7890 */
382 "Adaptec AHA-294X Ultra2 SCSI host adapter", /* AIC_7890 */
383 "Adaptec AIC-7896/7 Ultra2 SCSI host adapter", /* AIC_7896 */
384 "Adaptec AHA-394X Ultra2 SCSI host adapter", /* AIC_7897 */
385 "Adaptec AHA-395X Ultra2 SCSI host adapter", /* AIC_7897 */
386 "Adaptec PCMCIA SCSI controller", /* card bus stuff */
387 "Adaptec AIC-7892 Ultra 160/m SCSI host adapter", /* AIC_7892 */
388 "Adaptec AIC-7899 Ultra 160/m SCSI host adapter", /* AIC_7899 */
392 * There should be a specific return value for this in scsi.h, but
393 * it seems that most drivers ignore it.
395 #define DID_UNDERFLOW DID_ERROR
398 * What we want to do is have the higher level scsi driver requeue
399 * the command to us. There is no specific driver status for this
400 * condition, but the higher level scsi driver will requeue the
401 * command on a DID_BUS_BUSY error.
403 * Upon further inspection and testing, it seems that DID_BUS_BUSY
404 * will *always* retry the command. We can get into an infinite loop
405 * if this happens when we really want some sort of counter that
406 * will automatically abort/reset the command after so many retries.
407 * Using DID_ERROR will do just that. (Made by a suggestion by
408 * Doug Ledford 8/1/96)
410 #define DID_RETRY_COMMAND DID_ERROR
413 #define SCSI_RESET 0x040
420 #define SLOTBASE(x) ((x) << 12)
421 #define BASE_TO_SLOT(x) ((x) >> 12)
424 * Standard EISA Host ID regs (Offset from slot base)
426 #define AHC_HID0 0x80 /* 0,1: msb of ID2, 2-7: ID1 */
427 #define AHC_HID1 0x81 /* 0-4: ID3, 5-7: LSB ID2 */
428 #define AHC_HID2 0x82 /* product */
429 #define AHC_HID3 0x83 /* firmware revision */
432 * AIC-7770 I/O range to reserve for a card
437 #define INTDEF 0x5C /* Interrupt Definition Register */
440 * AIC-78X0 PCI registers
442 #define CLASS_PROGIF_REVID 0x08
443 #define DEVREVID 0x000000FFul
444 #define PROGINFC 0x0000FF00ul
445 #define SUBCLASS 0x00FF0000ul
446 #define BASECLASS 0xFF000000ul
448 #define CSIZE_LATTIME 0x0C
449 #define CACHESIZE 0x0000003Ful /* only 5 bits */
450 #define LATTIME 0x0000FF00ul
452 #define DEVCONFIG 0x40
453 #define SCBSIZE32 0x00010000ul /* aic789X only */
454 #define MPORTMODE 0x00000400ul /* aic7870 only */
455 #define RAMPSM 0x00000200ul /* aic7870 only */
456 #define RAMPSM_ULTRA2 0x00000004
457 #define VOLSENSE 0x00000100ul
458 #define SCBRAMSEL 0x00000080ul
459 #define SCBRAMSEL_ULTRA2 0x00000008
460 #define MRDCEN 0x00000040ul
461 #define EXTSCBTIME 0x00000020ul /* aic7870 only */
462 #define EXTSCBPEN 0x00000010ul /* aic7870 only */
463 #define BERREN 0x00000008ul
464 #define DACEN 0x00000004ul
465 #define STPWLEVEL 0x00000002ul
466 #define DIFACTNEGEN 0x00000001ul /* aic7870 only */
468 #define SCAMCTL 0x1a /* Ultra2 only */
469 #define CCSCBBADDR 0xf0 /* aic7895/6/7 */
472 * Define the different types of SEEPROMs on aic7xxx adapters
473 * and make it also represent the address size used in accessing
474 * its registers. The 93C46 chips have 1024 bits organized into
475 * 64 16-bit words, while the 93C56 chips have 2048 bits organized
476 * into 128 16-bit words. The C46 chips use 6 bits to address
477 * each word, while the C56 and C66 (4096 bits) use 8 bits to
480 typedef enum {C46
= 6, C56_66
= 8} seeprom_chip_type
;
484 * Define the format of the SEEPROM registers (16 bits).
487 struct seeprom_config
{
490 * SCSI ID Configuration Flags
492 #define CFXFER 0x0007 /* synchronous transfer rate */
493 #define CFSYNCH 0x0008 /* enable synchronous transfer */
494 #define CFDISC 0x0010 /* enable disconnection */
495 #define CFWIDEB 0x0020 /* wide bus device (wide card) */
496 #define CFSYNCHISULTRA 0x0040 /* CFSYNC is an ultra offset */
497 #define CFNEWULTRAFORMAT 0x0080 /* Use the Ultra2 SEEPROM format */
498 #define CFSTART 0x0100 /* send start unit SCSI command */
499 #define CFINCBIOS 0x0200 /* include in BIOS scan */
500 #define CFRNFOUND 0x0400 /* report even if not found */
501 #define CFMULTILUN 0x0800 /* probe mult luns in BIOS scan */
502 #define CFWBCACHEYES 0x4000 /* Enable W-Behind Cache on drive */
503 #define CFWBCACHENC 0xc000 /* Don't change W-Behind Cache */
505 unsigned short device_flags
[16]; /* words 0-15 */
510 #define CFSUPREM 0x0001 /* support all removable drives */
511 #define CFSUPREMB 0x0002 /* support removable drives for boot only */
512 #define CFBIOSEN 0x0004 /* BIOS enabled */
514 #define CFSM2DRV 0x0010 /* support more than two drives */
515 #define CF284XEXTEND 0x0020 /* extended translation (284x cards) */
517 #define CFEXTEND 0x0080 /* extended translation enabled */
519 unsigned short bios_control
; /* word 16 */
522 * Host Adapter Control Bits
524 #define CFAUTOTERM 0x0001 /* Perform Auto termination */
525 #define CFULTRAEN 0x0002 /* Ultra SCSI speed enable (Ultra cards) */
526 #define CF284XSELTO 0x0003 /* Selection timeout (284x cards) */
527 #define CF284XFIFO 0x000C /* FIFO Threshold (284x cards) */
528 #define CFSTERM 0x0004 /* SCSI low byte termination */
529 #define CFWSTERM 0x0008 /* SCSI high byte termination (wide card) */
530 #define CFSPARITY 0x0010 /* SCSI parity */
531 #define CF284XSTERM 0x0020 /* SCSI low byte termination (284x cards) */
532 #define CFRESETB 0x0040 /* reset SCSI bus at boot */
533 #define CFBPRIMARY 0x0100 /* Channel B primary on 7895 chipsets */
534 #define CFSEAUTOTERM 0x0400 /* aic7890 Perform SE Auto Term */
535 #define CFLVDSTERM 0x0800 /* aic7890 LVD Termination */
537 unsigned short adapter_control
; /* word 17 */
540 * Bus Release, Host Adapter ID
542 #define CFSCSIID 0x000F /* host adapter SCSI ID */
544 #define CFBRTIME 0xFF00 /* bus release time */
545 unsigned short brtime_id
; /* word 18 */
550 #define CFMAXTARG 0x00FF /* maximum targets */
552 unsigned short max_targets
; /* word 19 */
554 unsigned short res_1
[11]; /* words 20-30 */
555 unsigned short checksum
; /* word 31 */
558 #define SELBUS_MASK 0x0a
559 #define SELNARROW 0x00
561 #define SINGLE_BUS 0x00
563 #define SCB_TARGET(scb) \
564 (((scb)->hscb->target_channel_lun & TID) >> 4)
565 #define SCB_LUN(scb) \
566 ((scb)->hscb->target_channel_lun & LID)
567 #define SCB_IS_SCSIBUS_B(scb) \
568 (((scb)->hscb->target_channel_lun & SELBUSB) != 0)
571 * If an error occurs during a data transfer phase, run the command
572 * to completion - it's easier that way - making a note of the error
573 * condition in this location. This then will modify a DID_OK status
574 * into an appropriate error for the higher-level SCSI code.
576 #define aic7xxx_error(cmd) ((cmd)->SCp.Status)
579 * Keep track of the targets returned status.
581 #define aic7xxx_status(cmd) ((cmd)->SCp.sent_command)
584 * The position of the SCSI commands scb within the scb array.
586 #define aic7xxx_position(cmd) ((cmd)->SCp.have_data_in)
589 * The stored DMA mapping for single-buffer data transfers.
591 #define aic7xxx_mapping(cmd) ((cmd)->SCp.phase)
594 * Get out private data area from a scsi cmd pointer
596 #define AIC_DEV(cmd) ((struct aic_dev_data *)(cmd)->device->hostdata)
599 * So we can keep track of our host structs
601 static struct aic7xxx_host
*first_aic7xxx
= NULL
;
604 * As of Linux 2.1, the mid-level SCSI code uses virtual addresses
605 * in the scatter-gather lists. We need to convert the virtual
606 * addresses to physical addresses.
608 struct hw_scatterlist
{
609 unsigned int address
;
614 * Maximum number of SG segments these cards can support.
616 #define AIC7XXX_MAX_SG 128
619 * The maximum number of SCBs we could have for ANY type
620 * of card. DON'T FORGET TO CHANGE THE SCB MASK IN THE
621 * SEQUENCER CODE IF THIS IS MODIFIED!
623 #define AIC7XXX_MAXSCB 255
626 struct aic7xxx_hwscb
{
627 /* ------------ Begin hardware supported fields ---------------- */
628 /* 0*/ unsigned char control
;
629 /* 1*/ unsigned char target_channel_lun
; /* 4/1/3 bits */
630 /* 2*/ unsigned char target_status
;
631 /* 3*/ unsigned char SG_segment_count
;
632 /* 4*/ unsigned int SG_list_pointer
;
633 /* 8*/ unsigned char residual_SG_segment_count
;
634 /* 9*/ unsigned char residual_data_count
[3];
635 /*12*/ unsigned int data_pointer
;
636 /*16*/ unsigned int data_count
;
637 /*20*/ unsigned int SCSI_cmd_pointer
;
638 /*24*/ unsigned char SCSI_cmd_length
;
639 /*25*/ unsigned char tag
; /* Index into our kernel SCB array.
640 * Also used as the tag for tagged I/O
642 #define SCB_PIO_TRANSFER_SIZE 26 /* amount we need to upload/download
643 * via PIO to initialize a transaction.
645 /*26*/ unsigned char next
; /* Used to thread SCBs awaiting selection
646 * or disconnected down in the sequencer.
648 /*27*/ unsigned char prev
;
649 /*28*/ unsigned int pad
; /*
650 * Unused by the kernel, but we require
651 * the padding so that the array of
652 * hardware SCBs is aligned on 32 byte
653 * boundaries so the sequencer can index
659 SCB_DTR_SCB
= 0x0001,
660 SCB_WAITINGQ
= 0x0002,
664 SCB_DEVICE_RESET
= 0x0020,
666 SCB_RECOVERY_SCB
= 0x0080,
667 SCB_MSGOUT_PPR
= 0x0100,
668 SCB_MSGOUT_SENT
= 0x0200,
669 SCB_MSGOUT_SDTR
= 0x0400,
670 SCB_MSGOUT_WDTR
= 0x0800,
671 SCB_MSGOUT_BITS
= SCB_MSGOUT_PPR
|
675 SCB_QUEUED_ABORT
= 0x1000,
676 SCB_QUEUED_FOR_DONE
= 0x2000,
677 SCB_WAS_BUSY
= 0x4000,
678 SCB_QUEUE_FULL
= 0x8000
682 AHC_FNONE
= 0x00000000,
683 AHC_PAGESCBS
= 0x00000001,
684 AHC_CHANNEL_B_PRIMARY
= 0x00000002,
685 AHC_USEDEFAULTS
= 0x00000004,
686 AHC_INDIRECT_PAGING
= 0x00000008,
687 AHC_CHNLB
= 0x00000020,
688 AHC_CHNLC
= 0x00000040,
689 AHC_EXTEND_TRANS_A
= 0x00000100,
690 AHC_EXTEND_TRANS_B
= 0x00000200,
691 AHC_TERM_ENB_A
= 0x00000400,
692 AHC_TERM_ENB_SE_LOW
= 0x00000400,
693 AHC_TERM_ENB_B
= 0x00000800,
694 AHC_TERM_ENB_SE_HIGH
= 0x00000800,
695 AHC_HANDLING_REQINITS
= 0x00001000,
696 AHC_TARGETMODE
= 0x00002000,
697 AHC_NEWEEPROM_FMT
= 0x00004000,
699 * Here ends the FreeBSD defined flags and here begins the linux defined
700 * flags. NOTE: I did not preserve the old flag name during this change
701 * specifically to force me to evaluate what flags were being used properly
702 * and what flags weren't. This way, I could clean up the flag usage on
703 * a use by use basis. Doug Ledford
705 AHC_MOTHERBOARD
= 0x00020000,
706 AHC_NO_STPWEN
= 0x00040000,
707 AHC_RESET_DELAY
= 0x00080000,
708 AHC_A_SCANNED
= 0x00100000,
709 AHC_B_SCANNED
= 0x00200000,
710 AHC_MULTI_CHANNEL
= 0x00400000,
711 AHC_BIOS_ENABLED
= 0x00800000,
712 AHC_SEEPROM_FOUND
= 0x01000000,
713 AHC_TERM_ENB_LVD
= 0x02000000,
714 AHC_ABORT_PENDING
= 0x04000000,
715 AHC_RESET_PENDING
= 0x08000000,
716 #define AHC_IN_ISR_BIT 28
717 AHC_IN_ISR
= 0x10000000,
718 AHC_IN_ABORT
= 0x20000000,
719 AHC_IN_RESET
= 0x40000000,
720 AHC_EXTERNAL_SRAM
= 0x80000000
725 AHC_CHIPID_MASK
= 0x00ff,
726 AHC_AIC7770
= 0x0001,
727 AHC_AIC7850
= 0x0002,
728 AHC_AIC7860
= 0x0003,
729 AHC_AIC7870
= 0x0004,
730 AHC_AIC7880
= 0x0005,
731 AHC_AIC7890
= 0x0006,
732 AHC_AIC7895
= 0x0007,
733 AHC_AIC7896
= 0x0008,
734 AHC_AIC7892
= 0x0009,
735 AHC_AIC7899
= 0x000a,
747 AHC_MORE_SRAM
= 0x0010,
748 AHC_CMD_CHAN
= 0x0020,
749 AHC_QUEUE_REGS
= 0x0040,
750 AHC_SG_PRELOAD
= 0x0080,
751 AHC_SPIOCAP
= 0x0100,
753 AHC_NEW_AUTOTERM
= 0x0400,
754 AHC_AIC7770_FE
= AHC_FENONE
,
755 AHC_AIC7850_FE
= AHC_SPIOCAP
,
756 AHC_AIC7860_FE
= AHC_ULTRA
|AHC_SPIOCAP
,
757 AHC_AIC7870_FE
= AHC_FENONE
,
758 AHC_AIC7880_FE
= AHC_ULTRA
,
759 AHC_AIC7890_FE
= AHC_MORE_SRAM
|AHC_CMD_CHAN
|AHC_ULTRA2
|
760 AHC_QUEUE_REGS
|AHC_SG_PRELOAD
|AHC_NEW_AUTOTERM
,
761 AHC_AIC7895_FE
= AHC_MORE_SRAM
|AHC_CMD_CHAN
|AHC_ULTRA
,
762 AHC_AIC7896_FE
= AHC_AIC7890_FE
,
763 AHC_AIC7892_FE
= AHC_AIC7890_FE
|AHC_ULTRA3
,
764 AHC_AIC7899_FE
= AHC_AIC7890_FE
|AHC_ULTRA3
,
767 #define SCB_DMA_ADDR(scb, addr) ((unsigned long)(addr) + (scb)->scb_dma->dma_offset)
769 struct aic7xxx_scb_dma
{
770 unsigned long dma_offset
; /* Correction you have to add
771 * to virtual address to get
772 * dma handle in this region */
773 dma_addr_t dma_address
; /* DMA handle of the start,
775 unsigned int dma_len
; /* DMA length */
779 AHC_BUG_NONE
= 0x0000,
780 AHC_BUG_TMODE_WIDEODD
= 0x0001,
781 AHC_BUG_AUTOFLUSH
= 0x0002,
782 AHC_BUG_CACHETHEN
= 0x0004,
783 AHC_BUG_CACHETHEN_DIS
= 0x0008,
784 AHC_BUG_PCI_2_1_RETRY
= 0x0010,
785 AHC_BUG_PCI_MWI
= 0x0020,
786 AHC_BUG_SCBCHAN_UPLOAD
= 0x0040,
790 struct aic7xxx_hwscb
*hscb
; /* corresponding hardware scb */
791 Scsi_Cmnd
*cmd
; /* Scsi_Cmnd for this scb */
792 struct aic7xxx_scb
*q_next
; /* next scb in queue */
793 volatile scb_flag_type flags
; /* current state of scb */
794 struct hw_scatterlist
*sg_list
; /* SG list in adapter format */
795 unsigned char tag_action
;
796 unsigned char sg_count
;
797 unsigned char *sense_cmd
; /*
798 * Allocate 6 characters for
802 unsigned int sg_length
; /* We init this during buildscb so we
803 * don't have to calculate anything
804 * during underflow/overflow/stat code
807 struct aic7xxx_scb_dma
*scb_dma
;
811 * Define a linked list of SCBs.
814 struct aic7xxx_scb
*head
;
815 struct aic7xxx_scb
*tail
;
822 { ILLHADDR
, "Illegal Host Access" },
823 { ILLSADDR
, "Illegal Sequencer Address referenced" },
824 { ILLOPCODE
, "Illegal Opcode in sequencer program" },
825 { SQPARERR
, "Sequencer Ram Parity Error" },
826 { DPARERR
, "Data-Path Ram Parity Error" },
827 { MPARERR
, "Scratch Ram/SCB Array Ram Parity Error" },
828 { PCIERRSTAT
,"PCI Error detected" },
829 { CIOPARERR
, "CIOBUS Parity Error" }
833 generic_sense
[] = { REQUEST_SENSE
, 0, 0, 0, 255, 0 };
836 scb_queue_type free_scbs
; /*
837 * SCBs assigned to free slot on
838 * card (no paging required)
840 struct aic7xxx_scb
*scb_array
[AIC7XXX_MAXSCB
];
841 struct aic7xxx_hwscb
*hscbs
;
842 unsigned char numscbs
; /* current number of scbs */
843 unsigned char maxhscbs
; /* hardware scbs */
844 unsigned char maxscbs
; /* max scbs including pageable scbs */
845 dma_addr_t hscbs_dma
; /* DMA handle to hscbs */
846 unsigned int hscbs_dma_len
; /* length of the above DMA area */
847 void *hscb_kmalloc_ptr
;
851 unsigned char mesg_bytes
[4];
852 unsigned char command
[28];
855 #define AHC_TRANS_CUR 0x0001
856 #define AHC_TRANS_ACTIVE 0x0002
857 #define AHC_TRANS_GOAL 0x0004
858 #define AHC_TRANS_USER 0x0008
859 #define AHC_TRANS_QUITE 0x0010
862 unsigned char period
;
863 unsigned char offset
;
864 unsigned char options
;
867 struct aic_dev_data
{
868 volatile scb_queue_type delayed_scbs
;
869 volatile unsigned short temp_q_depth
;
870 unsigned short max_q_depth
;
871 volatile unsigned char active_cmds
;
875 * Total Xfers (count for each command that has a data xfer),
876 * broken down by reads && writes.
878 * Further sorted into a few bins for keeping tabs on how many commands
879 * we get of various sizes.
882 long w_total
; /* total writes */
883 long r_total
; /* total reads */
884 long barrier_total
; /* total num of REQ_BARRIER commands */
885 long ordered_total
; /* How many REQ_BARRIER commands we
886 used ordered tags to satisfy */
887 long w_bins
[6]; /* binned write */
888 long r_bins
[6]; /* binned reads */
891 #define BUS_DEVICE_RESET_PENDING 0x01
892 #define DEVICE_RESET_DELAY 0x02
893 #define DEVICE_PRINT_DTR 0x04
894 #define DEVICE_WAS_BUSY 0x08
895 #define DEVICE_DTR_SCANNED 0x10
896 #define DEVICE_SCSI_3 0x20
897 volatile unsigned char flags
;
899 unsigned needppr_copy
:1;
901 unsigned needsdtr_copy
:1;
903 unsigned needwdtr_copy
:1;
904 unsigned dtr_pending
:1;
905 struct scsi_device
*SDptr
;
906 struct list_head list
;
910 * Define a structure used for each host adapter. Note, in order to avoid
911 * problems with architectures I can't test on (because I don't have one,
912 * such as the Alpha based systems) which happen to give faults for
913 * non-aligned memory accesses, care was taken to align this structure
914 * in a way that gauranteed all accesses larger than 8 bits were aligned
915 * on the appropriate boundary. It's also organized to try and be more
916 * cache line efficient. Be careful when changing this lest you might hurt
917 * overall performance and bring down the wrath of the masses.
919 struct aic7xxx_host
{
921 * This is the first 64 bytes in the host struct
925 * We are grouping things here....first, items that get either read or
926 * written with nearly every interrupt
929 ahc_feature features
; /* chip features */
930 unsigned long base
; /* card base address */
931 volatile unsigned char *maddr
; /* memory mapped address */
932 unsigned long isr_count
; /* Interrupt count */
933 unsigned long spurious_int
;
934 scb_data_type
*scb_data
;
935 struct aic7xxx_cmd_queue
{
941 * Things read/written on nearly every entry into aic7xxx_queue()
943 volatile scb_queue_type waiting_scbs
;
944 unsigned char unpause
; /* unpause value for HCNTRL */
945 unsigned char pause
; /* pause value for HCNTRL */
946 volatile unsigned char qoutfifonext
;
947 volatile unsigned char activescbs
; /* active scbs */
948 volatile unsigned char max_activescbs
;
949 volatile unsigned char qinfifonext
;
950 volatile unsigned char *untagged_scbs
;
951 volatile unsigned char *qoutfifo
;
952 volatile unsigned char *qinfifo
;
954 unsigned char dev_last_queue_full
[MAX_TARGETS
];
955 unsigned char dev_last_queue_full_count
[MAX_TARGETS
];
956 unsigned short ultraenb
; /* Gets downloaded to card as a
958 unsigned short discenable
; /* Gets downloaded to card as a
960 transinfo_type user
[MAX_TARGETS
];
962 unsigned char msg_buf
[13]; /* The message for the target */
963 unsigned char msg_type
;
964 #define MSG_TYPE_NONE 0x00
965 #define MSG_TYPE_INITIATOR_MSGOUT 0x01
966 #define MSG_TYPE_INITIATOR_MSGIN 0x02
967 unsigned char msg_len
; /* Length of message */
968 unsigned char msg_index
; /* Index into msg_buf array */
972 * We put the less frequently used host structure items after the more
973 * frequently used items to try and ease the burden on the cache subsystem.
974 * These entries are not *commonly* accessed, whereas the preceding entries
975 * are accessed very often.
978 unsigned int irq
; /* IRQ for this adapter */
979 int instance
; /* aic7xxx instance number */
980 int scsi_id
; /* host adapter SCSI ID */
981 int scsi_id_b
; /* channel B for twin adapters */
982 unsigned int bios_address
;
983 int board_name_index
;
984 unsigned short bios_control
; /* bios control - SEEPROM */
985 unsigned short adapter_control
; /* adapter control - SEEPROM */
986 struct pci_dev
*pdev
;
987 unsigned char pci_bus
;
988 unsigned char pci_device_fn
;
989 struct seeprom_config sc
;
990 unsigned short sc_type
;
991 unsigned short sc_size
;
992 struct aic7xxx_host
*next
; /* allow for multiple IRQs */
993 struct Scsi_Host
*host
; /* pointer to scsi host */
994 struct list_head aic_devs
; /* all aic_dev structs on host */
995 int host_no
; /* SCSI host number */
996 unsigned long mbase
; /* I/O memory address */
997 ahc_chip chip
; /* chip type */
999 dma_addr_t fifo_dma
; /* DMA handle for fifo arrays */
1004 * Valid SCSIRATE values. (p. 3-17)
1005 * Provides a mapping of transfer periods in ns/4 to the proper value to
1006 * stick in the SCSIRATE reg to use that transfer rate.
1008 #define AHC_SYNCRATE_ULTRA3 0
1009 #define AHC_SYNCRATE_ULTRA2 1
1010 #define AHC_SYNCRATE_ULTRA 3
1011 #define AHC_SYNCRATE_FAST 6
1012 #define AHC_SYNCRATE_CRC 0x40
1013 #define AHC_SYNCRATE_SE 0x10
1014 static struct aic7xxx_syncrate
{
1015 /* Rates in Ultra mode have bit 8 of sxfr set */
1016 #define ULTRA_SXFR 0x100
1019 unsigned char period
;
1020 const char *rate
[2];
1021 } aic7xxx_syncrates
[] = {
1022 { 0x42, 0x000, 9, {"80.0", "160.0"} },
1023 { 0x13, 0x000, 10, {"40.0", "80.0"} },
1024 { 0x14, 0x000, 11, {"33.0", "66.6"} },
1025 { 0x15, 0x100, 12, {"20.0", "40.0"} },
1026 { 0x16, 0x110, 15, {"16.0", "32.0"} },
1027 { 0x17, 0x120, 18, {"13.4", "26.8"} },
1028 { 0x18, 0x000, 25, {"10.0", "20.0"} },
1029 { 0x19, 0x010, 31, {"8.0", "16.0"} },
1030 { 0x1a, 0x020, 37, {"6.67", "13.3"} },
1031 { 0x1b, 0x030, 43, {"5.7", "11.4"} },
1032 { 0x10, 0x040, 50, {"5.0", "10.0"} },
1033 { 0x00, 0x050, 56, {"4.4", "8.8" } },
1034 { 0x00, 0x060, 62, {"4.0", "8.0" } },
1035 { 0x00, 0x070, 68, {"3.6", "7.2" } },
1036 { 0x00, 0x000, 0, {NULL
, NULL
} },
1039 #define CTL_OF_SCB(scb) (((scb->hscb)->target_channel_lun >> 3) & 0x1), \
1040 (((scb->hscb)->target_channel_lun >> 4) & 0xf), \
1041 ((scb->hscb)->target_channel_lun & 0x07)
1043 #define CTL_OF_CMD(cmd) ((cmd->device->channel) & 0x01), \
1044 ((cmd->device->id) & 0x0f), \
1045 ((cmd->device->lun) & 0x07)
1047 #define TARGET_INDEX(cmd) ((cmd)->device->id | ((cmd)->device->channel << 3))
1050 * A nice little define to make doing our printks a little easier
1053 #define WARN_LEAD KERN_WARNING "(scsi%d:%d:%d:%d) "
1054 #define INFO_LEAD KERN_INFO "(scsi%d:%d:%d:%d) "
1057 * XXX - these options apply unilaterally to _all_ 274x/284x/294x
1058 * cards in the system. This should be fixed. Exceptions to this
1059 * rule are noted in the comments.
1063 * Use this as the default queue depth when setting tagged queueing on.
1065 static unsigned int aic7xxx_default_queue_depth
= AIC7XXX_CMDS_PER_DEVICE
;
1068 * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This
1069 * has no effect on any later resets that might occur due to things like
1070 * SCSI bus timeouts.
1072 static unsigned int aic7xxx_no_reset
= 0;
1074 * Certain PCI motherboards will scan PCI devices from highest to lowest,
1075 * others scan from lowest to highest, and they tend to do all kinds of
1076 * strange things when they come into contact with PCI bridge chips. The
1077 * net result of all this is that the PCI card that is actually used to boot
1078 * the machine is very hard to detect. Most motherboards go from lowest
1079 * PCI slot number to highest, and the first SCSI controller found is the
1080 * one you boot from. The only exceptions to this are when a controller
1081 * has its BIOS disabled. So, we by default sort all of our SCSI controllers
1082 * from lowest PCI slot number to highest PCI slot number. We also force
1083 * all controllers with their BIOS disabled to the end of the list. This
1084 * works on *almost* all computers. Where it doesn't work, we have this
1085 * option. Setting this option to non-0 will reverse the order of the sort
1086 * to highest first, then lowest, but will still leave cards with their BIOS
1087 * disabled at the very end. That should fix everyone up unless there are
1088 * really strange cirumstances.
1090 static int aic7xxx_reverse_scan
= 0;
1092 * Should we force EXTENDED translation on a controller.
1093 * 0 == Use whatever is in the SEEPROM or default to off
1094 * 1 == Use whatever is in the SEEPROM or default to on
1096 static unsigned int aic7xxx_extended
= 0;
1098 * The IRQ trigger method used on EISA controllers. Does not effect PCI cards.
1099 * -1 = Use detected settings.
1100 * 0 = Force Edge triggered mode.
1101 * 1 = Force Level triggered mode.
1103 static int aic7xxx_irq_trigger
= -1;
1105 * This variable is used to override the termination settings on a controller.
1106 * This should not be used under normal conditions. However, in the case
1107 * that a controller does not have a readable SEEPROM (so that we can't
1108 * read the SEEPROM settings directly) and that a controller has a buggered
1109 * version of the cable detection logic, this can be used to force the
1110 * correct termination. It is preferable to use the manual termination
1111 * settings in the BIOS if possible, but some motherboard controllers store
1112 * those settings in a format we can't read. In other cases, auto term
1113 * should also work, but the chipset was put together with no auto term
1114 * logic (common on motherboard controllers). In those cases, we have
1115 * 32 bits here to work with. That's good for 8 controllers/channels. The
1116 * bits are organized as 4 bits per channel, with scsi0 getting the lowest
1117 * 4 bits in the int. A 1 in a bit position indicates the termination setting
1118 * that corresponds to that bit should be enabled, a 0 is disabled.
1119 * It looks something like this:
1121 * 0x0f = 1111-Single Ended Low Byte Termination on/off
1122 * ||\-Single Ended High Byte Termination on/off
1123 * |\-LVD Low Byte Termination on/off
1124 * \-LVD High Byte Termination on/off
1126 * For non-Ultra2 controllers, the upper 2 bits are not important. So, to
1127 * enable both high byte and low byte termination on scsi0, I would need to
1128 * make sure that the override_term variable was set to 0x03 (bits 0011).
1129 * To make sure that all termination is enabled on an Ultra2 controller at
1130 * scsi2 and only high byte termination on scsi1 and high and low byte
1131 * termination on scsi0, I would set override_term=0xf23 (bits 1111 0010 0011)
1133 * For the most part, users should never have to use this, that's why I
1134 * left it fairly cryptic instead of easy to understand. If you need it,
1135 * most likely someone will be telling you what your's needs to be set to.
1137 static int aic7xxx_override_term
= -1;
1139 * Certain motherboard chipset controllers tend to screw
1140 * up the polarity of the term enable output pin. Use this variable
1141 * to force the correct polarity for your system. This is a bitfield variable
1142 * similar to the previous one, but this one has one bit per channel instead
1144 * 0 = Force the setting to active low.
1145 * 1 = Force setting to active high.
1146 * Most Adaptec cards are active high, several motherboards are active low.
1147 * To force a 2940 card at SCSI 0 to active high and a motherboard 7895
1148 * controller at scsi1 and scsi2 to active low, and a 2910 card at scsi3
1149 * to active high, you would need to set stpwlev=0x9 (bits 1001).
1151 * People shouldn't need to use this, but if you are experiencing lots of
1152 * SCSI timeout problems, this may help. There is one sure way to test what
1153 * this option needs to be. Using a boot floppy to boot the system, configure
1154 * your system to enable all SCSI termination (in the Adaptec SCSI BIOS) and
1155 * if needed then also pass a value to override_term to make sure that the
1156 * driver is enabling SCSI termination, then set this variable to either 0
1157 * or 1. When the driver boots, make sure there are *NO* SCSI cables
1158 * connected to your controller. If it finds and inits the controller
1159 * without problem, then the setting you passed to stpwlev was correct. If
1160 * the driver goes into a reset loop and hangs the system, then you need the
1161 * other setting for this variable. If neither setting lets the machine
1162 * boot then you have definite termination problems that may not be fixable.
1164 static int aic7xxx_stpwlev
= -1;
1166 * Set this to non-0 in order to force the driver to panic the kernel
1167 * and print out debugging info on a SCSI abort or reset cycle.
1169 static int aic7xxx_panic_on_abort
= 0;
1171 * PCI bus parity checking of the Adaptec controllers. This is somewhat
1172 * dubious at best. To my knowledge, this option has never actually
1173 * solved a PCI parity problem, but on certain machines with broken PCI
1174 * chipset configurations, it can generate tons of false error messages.
1175 * It's included in the driver for completeness.
1176 * 0 = Shut off PCI parity check
1177 * -1 = Normal polarity pci parity checking
1178 * 1 = reverse polarity pci parity checking
1180 * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
1181 * variable to -1 you would actually want to simply pass the variable
1182 * name without a number. That will invert the 0 which will result in
1185 static int aic7xxx_pci_parity
= 0;
1187 * Set this to any non-0 value to cause us to dump the contents of all
1188 * the card's registers in a hex dump format tailored to each model of
1191 * NOTE: THE CONTROLLER IS LEFT IN AN UNUSEABLE STATE BY THIS OPTION.
1192 * YOU CANNOT BOOT UP WITH THIS OPTION, IT IS FOR DEBUGGING PURPOSES
1195 static int aic7xxx_dump_card
= 0;
1197 * Set this to a non-0 value to make us dump out the 32 bit instruction
1198 * registers on the card after completing the sequencer download. This
1199 * allows the actual sequencer download to be verified. It is possible
1200 * to use this option and still boot up and run your system. This is
1201 * only intended for debugging purposes.
1203 static int aic7xxx_dump_sequencer
= 0;
1205 * Certain newer motherboards have put new PCI based devices into the
1206 * IO spaces that used to typically be occupied by VLB or EISA cards.
1207 * This overlap can cause these newer motherboards to lock up when scanned
1208 * for older EISA and VLB devices. Setting this option to non-0 will
1209 * cause the driver to skip scanning for any VLB or EISA controllers and
1210 * only support the PCI controllers. NOTE: this means that if the kernel
1211 * os compiled with PCI support disabled, then setting this to non-0
1212 * would result in never finding any devices :)
1214 static int aic7xxx_no_probe
= 0;
1216 * On some machines, enabling the external SCB RAM isn't reliable yet. I
1217 * haven't had time to make test patches for things like changing the
1218 * timing mode on that external RAM either. Some of those changes may
1219 * fix the problem. Until then though, we default to external SCB RAM
1220 * off and give a command line option to enable it.
1222 static int aic7xxx_scbram
= 0;
1224 * So that we can set how long each device is given as a selection timeout.
1225 * The table of values goes like this:
1230 * We default to 64ms because it's fast. Some old SCSI-I devices need a
1231 * longer time. The final value has to be left shifted by 3, hence 0x10
1232 * is the final value.
1234 static int aic7xxx_seltime
= 0x10;
1236 * So that insmod can find the variable and make it point to something
1239 static char * aic7xxx
= NULL
;
1240 MODULE_PARM(aic7xxx
, "s");
1243 #define VERBOSE_NORMAL 0x0000
1244 #define VERBOSE_NEGOTIATION 0x0001
1245 #define VERBOSE_SEQINT 0x0002
1246 #define VERBOSE_SCSIINT 0x0004
1247 #define VERBOSE_PROBE 0x0008
1248 #define VERBOSE_PROBE2 0x0010
1249 #define VERBOSE_NEGOTIATION2 0x0020
1250 #define VERBOSE_MINOR_ERROR 0x0040
1251 #define VERBOSE_TRACING 0x0080
1252 #define VERBOSE_ABORT 0x0f00
1253 #define VERBOSE_ABORT_MID 0x0100
1254 #define VERBOSE_ABORT_FIND 0x0200
1255 #define VERBOSE_ABORT_PROCESS 0x0400
1256 #define VERBOSE_ABORT_RETURN 0x0800
1257 #define VERBOSE_RESET 0xf000
1258 #define VERBOSE_RESET_MID 0x1000
1259 #define VERBOSE_RESET_FIND 0x2000
1260 #define VERBOSE_RESET_PROCESS 0x4000
1261 #define VERBOSE_RESET_RETURN 0x8000
1262 static int aic7xxx_verbose
= VERBOSE_NORMAL
| VERBOSE_NEGOTIATION
|
1263 VERBOSE_PROBE
; /* verbose messages */
1266 /****************************************************************************
1268 * We're going to start putting in function declarations so that order of
1269 * functions is no longer important. As needed, they are added here.
1271 ***************************************************************************/
1273 static int aic7xxx_release(struct Scsi_Host
*host
);
1274 static void aic7xxx_set_syncrate(struct aic7xxx_host
*p
,
1275 struct aic7xxx_syncrate
*syncrate
, int target
, int channel
,
1276 unsigned int period
, unsigned int offset
, unsigned char options
,
1277 unsigned int type
, struct aic_dev_data
*aic_dev
);
1278 static void aic7xxx_set_width(struct aic7xxx_host
*p
, int target
, int channel
,
1279 int lun
, unsigned int width
, unsigned int type
,
1280 struct aic_dev_data
*aic_dev
);
1281 static void aic7xxx_panic_abort(struct aic7xxx_host
*p
, Scsi_Cmnd
*cmd
);
1282 static void aic7xxx_print_card(struct aic7xxx_host
*p
);
1283 static void aic7xxx_print_scratch_ram(struct aic7xxx_host
*p
);
1284 static void aic7xxx_print_sequencer(struct aic7xxx_host
*p
, int downloaded
);
1285 #ifdef AIC7XXX_VERBOSE_DEBUGGING
1286 static void aic7xxx_check_scbs(struct aic7xxx_host
*p
, char *buffer
);
1289 /****************************************************************************
1291 * These functions are now used. They happen to be wrapped in useless
1292 * inb/outb port read/writes around the real reads and writes because it
1293 * seems that certain very fast CPUs have a problem dealing with us when
1294 * going at full speed.
1296 ***************************************************************************/
1298 static inline unsigned char
1299 aic_inb(struct aic7xxx_host
*p
, long port
)
1305 x
= readb(p
->maddr
+ port
);
1309 x
= inb(p
->base
+ port
);
1313 return(inb(p
->base
+ port
));
1318 aic_outb(struct aic7xxx_host
*p
, unsigned char val
, long port
)
1323 writeb(val
, p
->maddr
+ port
);
1324 mb(); /* locked operation in order to force CPU ordering */
1325 readb(p
->maddr
+ HCNTRL
); /* dummy read to flush the PCI write */
1329 outb(val
, p
->base
+ port
);
1330 mb(); /* locked operation in order to force CPU ordering */
1333 outb(val
, p
->base
+ port
);
1334 mb(); /* locked operation in order to force CPU ordering */
1338 /*+F*************************************************************************
1343 * Handle Linux boot parameters. This routine allows for assigning a value
1344 * to a parameter with a ':' between the parameter and the value.
1345 * ie. aic7xxx=unpause:0x0A,extended
1346 *-F*************************************************************************/
1348 aic7xxx_setup(char *s
)
1358 { "extended", &aic7xxx_extended
},
1359 { "no_reset", &aic7xxx_no_reset
},
1360 { "irq_trigger", &aic7xxx_irq_trigger
},
1361 { "verbose", &aic7xxx_verbose
},
1362 { "reverse_scan",&aic7xxx_reverse_scan
},
1363 { "override_term", &aic7xxx_override_term
},
1364 { "stpwlev", &aic7xxx_stpwlev
},
1365 { "no_probe", &aic7xxx_no_probe
},
1366 { "panic_on_abort", &aic7xxx_panic_on_abort
},
1367 { "pci_parity", &aic7xxx_pci_parity
},
1368 { "dump_card", &aic7xxx_dump_card
},
1369 { "dump_sequencer", &aic7xxx_dump_sequencer
},
1370 { "default_queue_depth", &aic7xxx_default_queue_depth
},
1371 { "scbram", &aic7xxx_scbram
},
1372 { "seltime", &aic7xxx_seltime
},
1373 { "tag_info", NULL
}
1376 end
= strchr(s
, '\0');
1378 while ((p
= strsep(&s
, ",.")) != NULL
)
1380 for (i
= 0; i
< NUMBER(options
); i
++)
1382 n
= strlen(options
[i
].name
);
1383 if (!strncmp(options
[i
].name
, p
, n
))
1385 if (!strncmp(p
, "tag_info", n
))
1390 char *tok
, *tok_end
, *tok_end2
;
1391 char tok_list
[] = { '.', ',', '{', '}', '\0' };
1392 int i
, instance
= -1, device
= -1;
1393 unsigned char done
= FALSE
;
1396 tok
= base
+ n
+ 1; /* Forward us just past the ':' */
1397 tok_end
= strchr(tok
, '\0');
1407 else if (device
== -1)
1414 else if (instance
!= -1)
1422 else if (device
>= 0)
1424 else if (instance
>= 0)
1426 if ( (device
>= MAX_TARGETS
) ||
1427 (instance
>= NUMBER(aic7xxx_tag_info
)) )
1440 tok_end
= strchr(tok
, '\0');
1441 for(i
=0; tok_list
[i
]; i
++)
1443 tok_end2
= strchr(tok
, tok_list
[i
]);
1444 if ( (tok_end2
) && (tok_end2
< tok_end
) )
1450 if ( (instance
>= 0) && (device
>= 0) &&
1451 (instance
< NUMBER(aic7xxx_tag_info
)) &&
1452 (device
< MAX_TARGETS
) )
1453 aic7xxx_tag_info
[instance
].tag_commands
[device
] =
1454 simple_strtoul(tok
, NULL
, 0) & 0xff;
1459 while((p
!= base
) && (p
!= NULL
))
1460 p
= strsep(&s
, ",.");
1463 else if (p
[n
] == ':')
1465 *(options
[i
].flag
) = simple_strtoul(p
+ n
+ 1, NULL
, 0);
1466 if(!strncmp(p
, "seltime", n
))
1468 *(options
[i
].flag
) = (*(options
[i
].flag
) % 4) << 3;
1471 else if (!strncmp(p
, "verbose", n
))
1473 *(options
[i
].flag
) = 0xff29;
1477 *(options
[i
].flag
) = ~(*(options
[i
].flag
));
1478 if(!strncmp(p
, "seltime", n
))
1480 *(options
[i
].flag
) = (*(options
[i
].flag
) % 4) << 3;
1489 __setup("aic7xxx=", aic7xxx_setup
);
1491 /*+F*************************************************************************
1496 * Pause the sequencer and wait for it to actually stop - this
1497 * is important since the sequencer can disable pausing for critical
1499 *-F*************************************************************************/
1501 pause_sequencer(struct aic7xxx_host
*p
)
1503 aic_outb(p
, p
->pause
, HCNTRL
);
1504 while ((aic_inb(p
, HCNTRL
) & PAUSE
) == 0)
1508 if(p
->features
& AHC_ULTRA2
)
1510 aic_inb(p
, CCSCBCTL
);
1514 /*+F*************************************************************************
1519 * Unpause the sequencer. Unremarkable, yet done often enough to
1520 * warrant an easy way to do it.
1521 *-F*************************************************************************/
1523 unpause_sequencer(struct aic7xxx_host
*p
, int unpause_always
)
1525 if (unpause_always
||
1526 ( !(aic_inb(p
, INTSTAT
) & (SCSIINT
| SEQINT
| BRKADRINT
)) &&
1527 !(p
->flags
& AHC_HANDLING_REQINITS
) ) )
1529 aic_outb(p
, p
->unpause
, HCNTRL
);
1533 /*+F*************************************************************************
1538 * Restart the sequencer program from address zero. This assumes
1539 * that the sequencer is already paused.
1540 *-F*************************************************************************/
1542 restart_sequencer(struct aic7xxx_host
*p
)
1544 aic_outb(p
, 0, SEQADDR0
);
1545 aic_outb(p
, 0, SEQADDR1
);
1546 aic_outb(p
, FASTMODE
, SEQCTL
);
1550 * We include the aic7xxx_seq.c file here so that the other defines have
1551 * already been made, and so that it comes before the code that actually
1552 * downloads the instructions (since we don't typically use function
1553 * prototype, our code has to be ordered that way, it's a left-over from
1554 * the original driver days.....I should fix it some time DL).
1556 #include "aic7xxx_old/aic7xxx_seq.c"
1558 /*+F*************************************************************************
1560 * aic7xxx_check_patch
1563 * See if the next patch to download should be downloaded.
1564 *-F*************************************************************************/
1566 aic7xxx_check_patch(struct aic7xxx_host
*p
,
1567 struct sequencer_patch
**start_patch
, int start_instr
, int *skip_addr
)
1569 struct sequencer_patch
*cur_patch
;
1570 struct sequencer_patch
*last_patch
;
1573 num_patches
= sizeof(sequencer_patches
)/sizeof(struct sequencer_patch
);
1574 last_patch
= &sequencer_patches
[num_patches
];
1575 cur_patch
= *start_patch
;
1577 while ((cur_patch
< last_patch
) && (start_instr
== cur_patch
->begin
))
1579 if (cur_patch
->patch_func(p
) == 0)
1582 * Start rejecting code.
1584 *skip_addr
= start_instr
+ cur_patch
->skip_instr
;
1585 cur_patch
+= cur_patch
->skip_patch
;
1590 * Found an OK patch. Advance the patch pointer to the next patch
1591 * and wait for our instruction pointer to get here.
1597 *start_patch
= cur_patch
;
1598 if (start_instr
< *skip_addr
)
1607 /*+F*************************************************************************
1609 * aic7xxx_download_instr
1612 * Find the next patch to download.
1613 *-F*************************************************************************/
1615 aic7xxx_download_instr(struct aic7xxx_host
*p
, int instrptr
,
1616 unsigned char *dconsts
)
1618 union ins_formats instr
;
1619 struct ins_format1
*fmt1_ins
;
1620 struct ins_format3
*fmt3_ins
;
1621 unsigned char opcode
;
1623 instr
= *(union ins_formats
*) &seqprog
[instrptr
* 4];
1625 instr
.integer
= le32_to_cpu(instr
.integer
);
1627 fmt1_ins
= &instr
.format1
;
1630 /* Pull the opcode */
1631 opcode
= instr
.format1
.opcode
;
1643 struct sequencer_patch
*cur_patch
;
1645 unsigned int address
;
1649 fmt3_ins
= &instr
.format3
;
1651 address
= fmt3_ins
->address
;
1652 cur_patch
= sequencer_patches
;
1655 for (i
= 0; i
< address
;)
1657 aic7xxx_check_patch(p
, &cur_patch
, i
, &skip_addr
);
1662 end_addr
= MIN(address
, skip_addr
);
1663 address_offset
+= end_addr
- i
;
1671 address
-= address_offset
;
1672 fmt3_ins
->address
= address
;
1673 /* Fall Through to the next code section */
1681 if (fmt1_ins
->parity
!= 0)
1683 fmt1_ins
->immediate
= dconsts
[fmt1_ins
->immediate
];
1685 fmt1_ins
->parity
= 0;
1686 /* Fall Through to the next code section */
1688 if ((p
->features
& AHC_ULTRA2
) != 0)
1692 /* Calculate odd parity for the instruction */
1693 for ( i
=0, count
=0; i
< 31; i
++)
1698 if ((instr
.integer
& mask
) != 0)
1701 if (!(count
& 0x01))
1702 instr
.format1
.parity
= 1;
1706 if (fmt3_ins
!= NULL
)
1708 instr
.integer
= fmt3_ins
->immediate
|
1709 (fmt3_ins
->source
<< 8) |
1710 (fmt3_ins
->address
<< 16) |
1711 (fmt3_ins
->opcode
<< 25);
1715 instr
.integer
= fmt1_ins
->immediate
|
1716 (fmt1_ins
->source
<< 8) |
1717 (fmt1_ins
->destination
<< 16) |
1718 (fmt1_ins
->ret
<< 24) |
1719 (fmt1_ins
->opcode
<< 25);
1722 aic_outb(p
, (instr
.integer
& 0xff), SEQRAM
);
1723 aic_outb(p
, ((instr
.integer
>> 8) & 0xff), SEQRAM
);
1724 aic_outb(p
, ((instr
.integer
>> 16) & 0xff), SEQRAM
);
1725 aic_outb(p
, ((instr
.integer
>> 24) & 0xff), SEQRAM
);
1730 panic("aic7xxx: Unknown opcode encountered in sequencer program.");
1736 /*+F*************************************************************************
1741 * Load the sequencer code into the controller memory.
1742 *-F*************************************************************************/
1744 aic7xxx_loadseq(struct aic7xxx_host
*p
)
1746 struct sequencer_patch
*cur_patch
;
1750 unsigned char download_consts
[4] = {0, 0, 0, 0};
1752 if (aic7xxx_verbose
& VERBOSE_PROBE
)
1754 printk(KERN_INFO
"(scsi%d) Downloading sequencer code...", p
->host_no
);
1757 download_consts
[TMODE_NUMCMDS
] = p
->num_targetcmds
;
1759 download_consts
[TMODE_NUMCMDS
] = 0;
1760 cur_patch
= &sequencer_patches
[0];
1764 aic_outb(p
, PERRORDIS
|LOADRAM
|FAILDIS
|FASTMODE
, SEQCTL
);
1765 aic_outb(p
, 0, SEQADDR0
);
1766 aic_outb(p
, 0, SEQADDR1
);
1768 for (i
= 0; i
< sizeof(seqprog
) / 4; i
++)
1770 if (aic7xxx_check_patch(p
, &cur_patch
, i
, &skip_addr
) == 0)
1772 /* Skip this instruction for this configuration. */
1775 aic7xxx_download_instr(p
, i
, &download_consts
[0]);
1779 aic_outb(p
, 0, SEQADDR0
);
1780 aic_outb(p
, 0, SEQADDR1
);
1781 aic_outb(p
, FASTMODE
| FAILDIS
, SEQCTL
);
1782 unpause_sequencer(p
, TRUE
);
1785 aic_outb(p
, FASTMODE
, SEQCTL
);
1786 if (aic7xxx_verbose
& VERBOSE_PROBE
)
1788 printk(" %d instructions downloaded\n", downloaded
);
1790 if (aic7xxx_dump_sequencer
)
1791 aic7xxx_print_sequencer(p
, downloaded
);
1794 /*+F*************************************************************************
1796 * aic7xxx_print_sequencer
1799 * Print the contents of the sequencer memory to the screen.
1800 *-F*************************************************************************/
1802 aic7xxx_print_sequencer(struct aic7xxx_host
*p
, int downloaded
)
1806 aic_outb(p
, PERRORDIS
|LOADRAM
|FAILDIS
|FASTMODE
, SEQCTL
);
1807 aic_outb(p
, 0, SEQADDR0
);
1808 aic_outb(p
, 0, SEQADDR1
);
1811 for (i
=0; i
< downloaded
; i
++)
1814 printk("%03x: ", i
);
1815 temp
= aic_inb(p
, SEQRAM
);
1816 temp
|= (aic_inb(p
, SEQRAM
) << 8);
1817 temp
|= (aic_inb(p
, SEQRAM
) << 16);
1818 temp
|= (aic_inb(p
, SEQRAM
) << 24);
1819 printk("%08x", temp
);
1828 aic_outb(p
, 0, SEQADDR0
);
1829 aic_outb(p
, 0, SEQADDR1
);
1830 aic_outb(p
, FASTMODE
| FAILDIS
, SEQCTL
);
1831 unpause_sequencer(p
, TRUE
);
1834 aic_outb(p
, FASTMODE
, SEQCTL
);
1838 /*+F*************************************************************************
1843 * Return a string describing the driver.
1844 *-F*************************************************************************/
1846 aic7xxx_info(struct Scsi_Host
*dooh
)
1848 static char buffer
[256];
1850 struct aic7xxx_host
*p
;
1853 p
= (struct aic7xxx_host
*)dooh
->hostdata
;
1854 memset(bp
, 0, sizeof(buffer
));
1855 strcpy(bp
, "Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) ");
1856 strcat(bp
, AIC7XXX_C_VERSION
);
1858 strcat(bp
, AIC7XXX_H_VERSION
);
1861 strcat(bp
, board_names
[p
->board_name_index
]);
1867 /*+F*************************************************************************
1869 * aic7xxx_find_syncrate
1872 * Look up the valid period to SCSIRATE conversion in our table
1873 *-F*************************************************************************/
1874 static struct aic7xxx_syncrate
*
1875 aic7xxx_find_syncrate(struct aic7xxx_host
*p
, unsigned int *period
,
1876 unsigned int maxsync
, unsigned char *options
)
1878 struct aic7xxx_syncrate
*syncrate
;
1883 case MSG_EXT_PPR_OPTION_DT_CRC
:
1884 case MSG_EXT_PPR_OPTION_DT_UNITS
:
1885 if(!(p
->features
& AHC_ULTRA3
))
1888 maxsync
= MAX(maxsync
, AHC_SYNCRATE_ULTRA2
);
1891 case MSG_EXT_PPR_OPTION_DT_CRC_QUICK
:
1892 case MSG_EXT_PPR_OPTION_DT_UNITS_QUICK
:
1893 if(!(p
->features
& AHC_ULTRA3
))
1896 maxsync
= MAX(maxsync
, AHC_SYNCRATE_ULTRA2
);
1901 * we don't support the Quick Arbitration variants of dual edge
1902 * clocking. As it turns out, we want to send back the
1903 * same basic option, but without the QA attribute.
1904 * We know that we are responding because we would never set
1905 * these options ourself, we would only respond to them.
1909 case MSG_EXT_PPR_OPTION_DT_CRC_QUICK
:
1910 *options
= MSG_EXT_PPR_OPTION_DT_CRC
;
1912 case MSG_EXT_PPR_OPTION_DT_UNITS_QUICK
:
1913 *options
= MSG_EXT_PPR_OPTION_DT_UNITS
;
1920 maxsync
= MAX(maxsync
, AHC_SYNCRATE_ULTRA2
);
1923 syncrate
= &aic7xxx_syncrates
[maxsync
];
1924 while ( (syncrate
->rate
[0] != NULL
) &&
1925 (!(p
->features
& AHC_ULTRA2
) || syncrate
->sxfr_ultra2
) )
1927 if (*period
<= syncrate
->period
)
1931 case MSG_EXT_PPR_OPTION_DT_CRC
:
1932 case MSG_EXT_PPR_OPTION_DT_UNITS
:
1933 if(!(syncrate
->sxfr_ultra2
& AHC_SYNCRATE_CRC
))
1937 * oops, we went too low for the CRC/DualEdge signalling, so
1938 * clear the options byte
1942 * We'll be sending a reply to this packet to set the options
1943 * properly, so unilaterally set the period as well.
1945 *period
= syncrate
->period
;
1950 if(syncrate
== &aic7xxx_syncrates
[maxsync
])
1952 *period
= syncrate
->period
;
1957 if(!(syncrate
->sxfr_ultra2
& AHC_SYNCRATE_CRC
))
1960 if(syncrate
== &aic7xxx_syncrates
[maxsync
])
1962 *period
= syncrate
->period
;
1974 if ( (*period
== 0) || (syncrate
->rate
[0] == NULL
) ||
1975 ((p
->features
& AHC_ULTRA2
) && (syncrate
->sxfr_ultra2
== 0)) )
1978 * Use async transfers for this target
1988 /*+F*************************************************************************
1990 * aic7xxx_find_period
1993 * Look up the valid SCSIRATE to period conversion in our table
1994 *-F*************************************************************************/
1996 aic7xxx_find_period(struct aic7xxx_host
*p
, unsigned int scsirate
,
1997 unsigned int maxsync
)
1999 struct aic7xxx_syncrate
*syncrate
;
2001 if (p
->features
& AHC_ULTRA2
)
2003 scsirate
&= SXFR_ULTRA2
;
2010 syncrate
= &aic7xxx_syncrates
[maxsync
];
2011 while (syncrate
->rate
[0] != NULL
)
2013 if (p
->features
& AHC_ULTRA2
)
2015 if (syncrate
->sxfr_ultra2
== 0)
2017 else if (scsirate
== syncrate
->sxfr_ultra2
)
2018 return (syncrate
->period
);
2019 else if (scsirate
== (syncrate
->sxfr_ultra2
& ~AHC_SYNCRATE_CRC
))
2020 return (syncrate
->period
);
2022 else if (scsirate
== (syncrate
->sxfr
& ~ULTRA_SXFR
))
2024 return (syncrate
->period
);
2028 return (0); /* async */
2031 /*+F*************************************************************************
2033 * aic7xxx_validate_offset
2036 * Set a valid offset value for a particular card in use and transfer
2038 *-F*************************************************************************/
2040 aic7xxx_validate_offset(struct aic7xxx_host
*p
,
2041 struct aic7xxx_syncrate
*syncrate
, unsigned int *offset
, int wide
)
2043 unsigned int maxoffset
;
2045 /* Limit offset to what the card (and device) can do */
2046 if (syncrate
== NULL
)
2050 else if (p
->features
& AHC_ULTRA2
)
2052 maxoffset
= MAX_OFFSET_ULTRA2
;
2057 maxoffset
= MAX_OFFSET_16BIT
;
2059 maxoffset
= MAX_OFFSET_8BIT
;
2061 *offset
= MIN(*offset
, maxoffset
);
2064 /*+F*************************************************************************
2066 * aic7xxx_set_syncrate
2069 * Set the actual syncrate down in the card and in our host structs
2070 *-F*************************************************************************/
2072 aic7xxx_set_syncrate(struct aic7xxx_host
*p
, struct aic7xxx_syncrate
*syncrate
,
2073 int target
, int channel
, unsigned int period
, unsigned int offset
,
2074 unsigned char options
, unsigned int type
, struct aic_dev_data
*aic_dev
)
2076 unsigned char tindex
;
2077 unsigned short target_mask
;
2078 unsigned char lun
, old_options
;
2079 unsigned int old_period
, old_offset
;
2081 tindex
= target
| (channel
<< 3);
2082 target_mask
= 0x01 << tindex
;
2083 lun
= aic_inb(p
, SCB_TCL
) & 0x07;
2085 if (syncrate
== NULL
)
2091 old_period
= aic_dev
->cur
.period
;
2092 old_offset
= aic_dev
->cur
.offset
;
2093 old_options
= aic_dev
->cur
.options
;
2096 if (type
& AHC_TRANS_CUR
)
2098 unsigned int scsirate
;
2100 scsirate
= aic_inb(p
, TARG_SCSIRATE
+ tindex
);
2101 if (p
->features
& AHC_ULTRA2
)
2103 scsirate
&= ~SXFR_ULTRA2
;
2104 if (syncrate
!= NULL
)
2108 case MSG_EXT_PPR_OPTION_DT_UNITS
:
2110 * mask off the CRC bit in the xfer settings
2112 scsirate
|= (syncrate
->sxfr_ultra2
& ~AHC_SYNCRATE_CRC
);
2115 scsirate
|= syncrate
->sxfr_ultra2
;
2119 if (type
& AHC_TRANS_ACTIVE
)
2121 aic_outb(p
, offset
, SCSIOFFSET
);
2123 aic_outb(p
, offset
, TARG_OFFSET
+ tindex
);
2125 else /* Not an Ultra2 controller */
2127 scsirate
&= ~(SXFR
|SOFS
);
2128 p
->ultraenb
&= ~target_mask
;
2129 if (syncrate
!= NULL
)
2131 if (syncrate
->sxfr
& ULTRA_SXFR
)
2133 p
->ultraenb
|= target_mask
;
2135 scsirate
|= (syncrate
->sxfr
& SXFR
);
2136 scsirate
|= (offset
& SOFS
);
2138 if (type
& AHC_TRANS_ACTIVE
)
2140 unsigned char sxfrctl0
;
2142 sxfrctl0
= aic_inb(p
, SXFRCTL0
);
2143 sxfrctl0
&= ~FAST20
;
2144 if (p
->ultraenb
& target_mask
)
2146 aic_outb(p
, sxfrctl0
, SXFRCTL0
);
2148 aic_outb(p
, p
->ultraenb
& 0xff, ULTRA_ENB
);
2149 aic_outb(p
, (p
->ultraenb
>> 8) & 0xff, ULTRA_ENB
+ 1 );
2151 if (type
& AHC_TRANS_ACTIVE
)
2153 aic_outb(p
, scsirate
, SCSIRATE
);
2155 aic_outb(p
, scsirate
, TARG_SCSIRATE
+ tindex
);
2156 aic_dev
->cur
.period
= period
;
2157 aic_dev
->cur
.offset
= offset
;
2158 aic_dev
->cur
.options
= options
;
2159 if ( !(type
& AHC_TRANS_QUITE
) &&
2160 (aic7xxx_verbose
& VERBOSE_NEGOTIATION
) &&
2161 (aic_dev
->flags
& DEVICE_PRINT_DTR
) )
2165 int rate_mod
= (scsirate
& WIDEXFER
) ? 1 : 0;
2167 printk(INFO_LEAD
"Synchronous at %s Mbyte/sec, "
2168 "offset %d.\n", p
->host_no
, channel
, target
, lun
,
2169 syncrate
->rate
[rate_mod
], offset
);
2173 printk(INFO_LEAD
"Using asynchronous transfers.\n",
2174 p
->host_no
, channel
, target
, lun
);
2176 aic_dev
->flags
&= ~DEVICE_PRINT_DTR
;
2180 if (type
& AHC_TRANS_GOAL
)
2182 aic_dev
->goal
.period
= period
;
2183 aic_dev
->goal
.offset
= offset
;
2184 aic_dev
->goal
.options
= options
;
2187 if (type
& AHC_TRANS_USER
)
2189 p
->user
[tindex
].period
= period
;
2190 p
->user
[tindex
].offset
= offset
;
2191 p
->user
[tindex
].options
= options
;
2195 /*+F*************************************************************************
2200 * Set the actual width down in the card and in our host structs
2201 *-F*************************************************************************/
2203 aic7xxx_set_width(struct aic7xxx_host
*p
, int target
, int channel
, int lun
,
2204 unsigned int width
, unsigned int type
, struct aic_dev_data
*aic_dev
)
2206 unsigned char tindex
;
2207 unsigned short target_mask
;
2208 unsigned int old_width
;
2210 tindex
= target
| (channel
<< 3);
2211 target_mask
= 1 << tindex
;
2213 old_width
= aic_dev
->cur
.width
;
2215 if (type
& AHC_TRANS_CUR
)
2217 unsigned char scsirate
;
2219 scsirate
= aic_inb(p
, TARG_SCSIRATE
+ tindex
);
2221 scsirate
&= ~WIDEXFER
;
2222 if (width
== MSG_EXT_WDTR_BUS_16_BIT
)
2223 scsirate
|= WIDEXFER
;
2225 aic_outb(p
, scsirate
, TARG_SCSIRATE
+ tindex
);
2227 if (type
& AHC_TRANS_ACTIVE
)
2228 aic_outb(p
, scsirate
, SCSIRATE
);
2230 aic_dev
->cur
.width
= width
;
2232 if ( !(type
& AHC_TRANS_QUITE
) &&
2233 (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
) &&
2234 (aic_dev
->flags
& DEVICE_PRINT_DTR
) )
2236 printk(INFO_LEAD
"Using %s transfers\n", p
->host_no
, channel
, target
,
2237 lun
, (scsirate
& WIDEXFER
) ? "Wide(16bit)" : "Narrow(8bit)" );
2241 if (type
& AHC_TRANS_GOAL
)
2242 aic_dev
->goal
.width
= width
;
2243 if (type
& AHC_TRANS_USER
)
2244 p
->user
[tindex
].width
= width
;
2246 if (aic_dev
->goal
.offset
)
2248 if (p
->features
& AHC_ULTRA2
)
2250 aic_dev
->goal
.offset
= MAX_OFFSET_ULTRA2
;
2252 else if (width
== MSG_EXT_WDTR_BUS_16_BIT
)
2254 aic_dev
->goal
.offset
= MAX_OFFSET_16BIT
;
2258 aic_dev
->goal
.offset
= MAX_OFFSET_8BIT
;
2263 /*+F*************************************************************************
2268 * SCB queue initialization.
2270 *-F*************************************************************************/
2272 scbq_init(volatile scb_queue_type
*queue
)
2278 /*+F*************************************************************************
2283 * Add an SCB to the head of the list.
2285 *-F*************************************************************************/
2287 scbq_insert_head(volatile scb_queue_type
*queue
, struct aic7xxx_scb
*scb
)
2289 scb
->q_next
= queue
->head
;
2291 if (queue
->tail
== NULL
) /* If list was empty, update tail. */
2292 queue
->tail
= queue
->head
;
2295 /*+F*************************************************************************
2300 * Remove an SCB from the head of the list.
2302 *-F*************************************************************************/
2303 static inline struct aic7xxx_scb
*
2304 scbq_remove_head(volatile scb_queue_type
*queue
)
2306 struct aic7xxx_scb
* scbp
;
2309 if (queue
->head
!= NULL
)
2310 queue
->head
= queue
->head
->q_next
;
2311 if (queue
->head
== NULL
) /* If list is now empty, update tail. */
2316 /*+F*************************************************************************
2321 * Removes an SCB from the list.
2323 *-F*************************************************************************/
2325 scbq_remove(volatile scb_queue_type
*queue
, struct aic7xxx_scb
*scb
)
2327 if (queue
->head
== scb
)
2329 /* At beginning of queue, remove from head. */
2330 scbq_remove_head(queue
);
2334 struct aic7xxx_scb
*curscb
= queue
->head
;
2337 * Search until the next scb is the one we're looking for, or
2338 * we run out of queue.
2340 while ((curscb
!= NULL
) && (curscb
->q_next
!= scb
))
2342 curscb
= curscb
->q_next
;
2347 curscb
->q_next
= scb
->q_next
;
2348 if (scb
->q_next
== NULL
)
2350 /* Update the tail when removing the tail. */
2351 queue
->tail
= curscb
;
2357 /*+F*************************************************************************
2362 * Add an SCB at the tail of the list.
2364 *-F*************************************************************************/
2366 scbq_insert_tail(volatile scb_queue_type
*queue
, struct aic7xxx_scb
*scb
)
2369 if (queue
->tail
!= NULL
) /* Add the scb at the end of the list. */
2370 queue
->tail
->q_next
= scb
;
2371 queue
->tail
= scb
; /* Update the tail. */
2372 if (queue
->head
== NULL
) /* If list was empty, update head. */
2373 queue
->head
= queue
->tail
;
2376 /*+F*************************************************************************
2381 * Checks to see if an scb matches the target/channel as specified.
2382 * If target is ALL_TARGETS (-1), then we're looking for any device
2383 * on the specified channel; this happens when a channel is going
2384 * to be reset and all devices on that channel must be aborted.
2385 *-F*************************************************************************/
2387 aic7xxx_match_scb(struct aic7xxx_host
*p
, struct aic7xxx_scb
*scb
,
2388 int target
, int channel
, int lun
, unsigned char tag
)
2390 int targ
= (scb
->hscb
->target_channel_lun
>> 4) & 0x0F;
2391 int chan
= (scb
->hscb
->target_channel_lun
>> 3) & 0x01;
2392 int slun
= scb
->hscb
->target_channel_lun
& 0x07;
2395 match
= ((chan
== channel
) || (channel
== ALL_CHANNELS
));
2397 match
= ((targ
== target
) || (target
== ALL_TARGETS
));
2399 match
= ((lun
== slun
) || (lun
== ALL_LUNS
));
2401 match
= ((tag
== scb
->hscb
->tag
) || (tag
== SCB_LIST_NULL
));
2406 /*+F*************************************************************************
2408 * aic7xxx_add_curscb_to_free_list
2411 * Adds the current scb (in SCBPTR) to the list of free SCBs.
2412 *-F*************************************************************************/
2414 aic7xxx_add_curscb_to_free_list(struct aic7xxx_host
*p
)
2417 * Invalidate the tag so that aic7xxx_find_scb doesn't think
2420 aic_outb(p
, SCB_LIST_NULL
, SCB_TAG
);
2421 aic_outb(p
, 0, SCB_CONTROL
);
2423 aic_outb(p
, aic_inb(p
, FREE_SCBH
), SCB_NEXT
);
2424 aic_outb(p
, aic_inb(p
, SCBPTR
), FREE_SCBH
);
2427 /*+F*************************************************************************
2429 * aic7xxx_rem_scb_from_disc_list
2432 * Removes the current SCB from the disconnected list and adds it
2434 *-F*************************************************************************/
2435 static unsigned char
2436 aic7xxx_rem_scb_from_disc_list(struct aic7xxx_host
*p
, unsigned char scbptr
,
2441 aic_outb(p
, scbptr
, SCBPTR
);
2442 next
= aic_inb(p
, SCB_NEXT
);
2443 aic7xxx_add_curscb_to_free_list(p
);
2445 if (prev
!= SCB_LIST_NULL
)
2447 aic_outb(p
, prev
, SCBPTR
);
2448 aic_outb(p
, next
, SCB_NEXT
);
2452 aic_outb(p
, next
, DISCONNECTED_SCBH
);
2458 /*+F*************************************************************************
2460 * aic7xxx_busy_target
2463 * Set the specified target busy.
2464 *-F*************************************************************************/
2466 aic7xxx_busy_target(struct aic7xxx_host
*p
, struct aic7xxx_scb
*scb
)
2468 p
->untagged_scbs
[scb
->hscb
->target_channel_lun
] = scb
->hscb
->tag
;
2471 /*+F*************************************************************************
2473 * aic7xxx_index_busy_target
2476 * Returns the index of the busy target, and optionally sets the
2478 *-F*************************************************************************/
2479 static inline unsigned char
2480 aic7xxx_index_busy_target(struct aic7xxx_host
*p
, unsigned char tcl
,
2483 unsigned char busy_scbid
;
2485 busy_scbid
= p
->untagged_scbs
[tcl
];
2488 p
->untagged_scbs
[tcl
] = SCB_LIST_NULL
;
2490 return (busy_scbid
);
2493 /*+F*************************************************************************
2498 * Look through the SCB array of the card and attempt to find the
2499 * hardware SCB that corresponds to the passed in SCB. Return
2500 * SCB_LIST_NULL if unsuccessful. This routine assumes that the
2501 * card is already paused.
2502 *-F*************************************************************************/
2503 static unsigned char
2504 aic7xxx_find_scb(struct aic7xxx_host
*p
, struct aic7xxx_scb
*scb
)
2506 unsigned char saved_scbptr
;
2507 unsigned char curindex
;
2509 saved_scbptr
= aic_inb(p
, SCBPTR
);
2511 for (curindex
= 0; curindex
< p
->scb_data
->maxhscbs
; curindex
++)
2513 aic_outb(p
, curindex
, SCBPTR
);
2514 if (aic_inb(p
, SCB_TAG
) == scb
->hscb
->tag
)
2519 aic_outb(p
, saved_scbptr
, SCBPTR
);
2520 if (curindex
>= p
->scb_data
->maxhscbs
)
2522 curindex
= SCB_LIST_NULL
;
2528 /*+F*************************************************************************
2530 * aic7xxx_allocate_scb
2533 * Get an SCB from the free list or by allocating a new one.
2534 *-F*************************************************************************/
2536 aic7xxx_allocate_scb(struct aic7xxx_host
*p
)
2538 struct aic7xxx_scb
*scbp
= NULL
;
2539 int scb_size
= (sizeof (struct hw_scatterlist
) * AIC7XXX_MAX_SG
) + 12 + 6;
2541 int step
= PAGE_SIZE
/ 1024;
2542 unsigned long scb_count
= 0;
2543 struct hw_scatterlist
*hsgp
;
2544 struct aic7xxx_scb
*scb_ap
;
2545 struct aic7xxx_scb_dma
*scb_dma
;
2546 unsigned char *bufs
;
2548 if (p
->scb_data
->numscbs
< p
->scb_data
->maxscbs
)
2551 * Calculate the optimal number of SCBs to allocate.
2553 * NOTE: This formula works because the sizeof(sg_array) is always
2554 * 1024. Therefore, scb_size * i would always be > PAGE_SIZE *
2555 * (i/step). The (i-1) allows the left hand side of the equation
2556 * to grow into the right hand side to a point of near perfect
2557 * efficiency since scb_size * (i -1) is growing slightly faster
2558 * than the right hand side. If the number of SG array elements
2559 * is changed, this function may not be near so efficient any more.
2561 * Since the DMA'able buffers are now allocated in a separate
2562 * chunk this algorithm has been modified to match. The '12'
2563 * and '6' factors in scb_size are for the DMA'able command byte
2564 * and sensebuffers respectively. -DaveM
2566 for ( i
=step
;; i
*= 2 )
2568 if ( (scb_size
* (i
-1)) >= ( (PAGE_SIZE
* (i
/step
)) - 64 ) )
2574 scb_count
= MIN( (i
-1), p
->scb_data
->maxscbs
- p
->scb_data
->numscbs
);
2575 scb_ap
= (struct aic7xxx_scb
*)kmalloc(sizeof (struct aic7xxx_scb
) * scb_count
2576 + sizeof(struct aic7xxx_scb_dma
), GFP_ATOMIC
);
2579 scb_dma
= (struct aic7xxx_scb_dma
*)&scb_ap
[scb_count
];
2580 hsgp
= (struct hw_scatterlist
*)
2581 pci_alloc_consistent(p
->pdev
, scb_size
* scb_count
,
2582 &scb_dma
->dma_address
);
2588 bufs
= (unsigned char *)&hsgp
[scb_count
* AIC7XXX_MAX_SG
];
2589 #ifdef AIC7XXX_VERBOSE_DEBUGGING
2590 if (aic7xxx_verbose
> 0xffff)
2592 if (p
->scb_data
->numscbs
== 0)
2593 printk(INFO_LEAD
"Allocating initial %ld SCB structures.\n",
2594 p
->host_no
, -1, -1, -1, scb_count
);
2596 printk(INFO_LEAD
"Allocating %ld additional SCB structures.\n",
2597 p
->host_no
, -1, -1, -1, scb_count
);
2600 memset(scb_ap
, 0, sizeof (struct aic7xxx_scb
) * scb_count
);
2601 scb_dma
->dma_offset
= (unsigned long)scb_dma
->dma_address
2602 - (unsigned long)hsgp
;
2603 scb_dma
->dma_len
= scb_size
* scb_count
;
2604 for (i
=0; i
< scb_count
; i
++)
2607 scbp
->hscb
= &p
->scb_data
->hscbs
[p
->scb_data
->numscbs
];
2608 scbp
->sg_list
= &hsgp
[i
* AIC7XXX_MAX_SG
];
2609 scbp
->sense_cmd
= bufs
;
2610 scbp
->cmnd
= bufs
+ 6;
2612 scbp
->scb_dma
= scb_dma
;
2613 memset(scbp
->hscb
, 0, sizeof(struct aic7xxx_hwscb
));
2614 scbp
->hscb
->tag
= p
->scb_data
->numscbs
;
2616 * Place in the scb array; never is removed
2618 p
->scb_data
->scb_array
[p
->scb_data
->numscbs
++] = scbp
;
2619 scbq_insert_tail(&p
->scb_data
->free_scbs
, scbp
);
2621 scbp
->kmalloc_ptr
= scb_ap
;
2626 /*+F*************************************************************************
2628 * aic7xxx_queue_cmd_complete
2631 * Due to race conditions present in the SCSI subsystem, it is easier
2632 * to queue completed commands, then call scsi_done() on them when
2633 * we're finished. This function queues the completed commands.
2634 *-F*************************************************************************/
2636 aic7xxx_queue_cmd_complete(struct aic7xxx_host
*p
, Scsi_Cmnd
*cmd
)
2638 aic7xxx_position(cmd
) = SCB_LIST_NULL
;
2639 cmd
->host_scribble
= (char *)p
->completeq
.head
;
2640 p
->completeq
.head
= cmd
;
2643 /*+F*************************************************************************
2645 * aic7xxx_done_cmds_complete
2648 * Process the completed command queue.
2649 *-F*************************************************************************/
2651 aic7xxx_done_cmds_complete(struct aic7xxx_host
*p
)
2655 while (p
->completeq
.head
!= NULL
)
2657 cmd
= p
->completeq
.head
;
2658 p
->completeq
.head
= (Scsi_Cmnd
*)cmd
->host_scribble
;
2659 cmd
->host_scribble
= NULL
;
2660 cmd
->scsi_done(cmd
);
2664 /*+F*************************************************************************
2669 * Free the scb and insert into the free scb list.
2670 *-F*************************************************************************/
2672 aic7xxx_free_scb(struct aic7xxx_host
*p
, struct aic7xxx_scb
*scb
)
2675 scb
->flags
= SCB_FREE
;
2679 scb
->tag_action
= 0;
2680 scb
->hscb
->control
= 0;
2681 scb
->hscb
->target_status
= 0;
2682 scb
->hscb
->target_channel_lun
= SCB_LIST_NULL
;
2684 scbq_insert_head(&p
->scb_data
->free_scbs
, scb
);
2687 /*+F*************************************************************************
2692 * Calls the higher level scsi done function and frees the scb.
2693 *-F*************************************************************************/
2695 aic7xxx_done(struct aic7xxx_host
*p
, struct aic7xxx_scb
*scb
)
2697 Scsi_Cmnd
*cmd
= scb
->cmd
;
2698 struct aic_dev_data
*aic_dev
= cmd
->device
->hostdata
;
2699 int tindex
= TARGET_INDEX(cmd
);
2700 struct aic7xxx_scb
*scbp
;
2701 unsigned char queue_depth
;
2703 if (cmd
->use_sg
> 1)
2705 struct scatterlist
*sg
;
2707 sg
= (struct scatterlist
*)cmd
->request_buffer
;
2708 pci_unmap_sg(p
->pdev
, sg
, cmd
->use_sg
, scsi_to_pci_dma_dir(cmd
->sc_data_direction
));
2710 else if (cmd
->request_bufflen
)
2711 pci_unmap_single(p
->pdev
, aic7xxx_mapping(cmd
),
2712 cmd
->request_bufflen
,
2713 scsi_to_pci_dma_dir(cmd
->sc_data_direction
));
2714 if (scb
->flags
& SCB_SENSE
)
2716 pci_unmap_single(p
->pdev
,
2717 le32_to_cpu(scb
->sg_list
[0].address
),
2718 sizeof(cmd
->sense_buffer
),
2719 PCI_DMA_FROMDEVICE
);
2721 if (scb
->flags
& SCB_RECOVERY_SCB
)
2723 p
->flags
&= ~AHC_ABORT_PENDING
;
2725 if (scb
->flags
& (SCB_RESET
|SCB_ABORT
))
2727 cmd
->result
|= (DID_RESET
<< 16);
2730 if ((scb
->flags
& SCB_MSGOUT_BITS
) != 0)
2732 unsigned short mask
;
2733 int message_error
= FALSE
;
2735 mask
= 0x01 << tindex
;
2738 * Check to see if we get an invalid message or a message error
2739 * after failing to negotiate a wide or sync transfer message.
2741 if ((scb
->flags
& SCB_SENSE
) &&
2742 ((scb
->cmd
->sense_buffer
[12] == 0x43) || /* INVALID_MESSAGE */
2743 (scb
->cmd
->sense_buffer
[12] == 0x49))) /* MESSAGE_ERROR */
2745 message_error
= TRUE
;
2748 if (scb
->flags
& SCB_MSGOUT_WDTR
)
2752 if ( (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
) &&
2753 (aic_dev
->flags
& DEVICE_PRINT_DTR
) )
2755 printk(INFO_LEAD
"Device failed to complete Wide Negotiation "
2756 "processing and\n", p
->host_no
, CTL_OF_SCB(scb
));
2757 printk(INFO_LEAD
"returned a sense error code for invalid message, "
2758 "disabling future\n", p
->host_no
, CTL_OF_SCB(scb
));
2759 printk(INFO_LEAD
"Wide negotiation to this device.\n", p
->host_no
,
2762 aic_dev
->needwdtr
= aic_dev
->needwdtr_copy
= 0;
2765 if (scb
->flags
& SCB_MSGOUT_SDTR
)
2769 if ( (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
) &&
2770 (aic_dev
->flags
& DEVICE_PRINT_DTR
) )
2772 printk(INFO_LEAD
"Device failed to complete Sync Negotiation "
2773 "processing and\n", p
->host_no
, CTL_OF_SCB(scb
));
2774 printk(INFO_LEAD
"returned a sense error code for invalid message, "
2775 "disabling future\n", p
->host_no
, CTL_OF_SCB(scb
));
2776 printk(INFO_LEAD
"Sync negotiation to this device.\n", p
->host_no
,
2778 aic_dev
->flags
&= ~DEVICE_PRINT_DTR
;
2780 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
= 0;
2783 if (scb
->flags
& SCB_MSGOUT_PPR
)
2787 if ( (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
) &&
2788 (aic_dev
->flags
& DEVICE_PRINT_DTR
) )
2790 printk(INFO_LEAD
"Device failed to complete Parallel Protocol "
2791 "Request processing and\n", p
->host_no
, CTL_OF_SCB(scb
));
2792 printk(INFO_LEAD
"returned a sense error code for invalid message, "
2793 "disabling future\n", p
->host_no
, CTL_OF_SCB(scb
));
2794 printk(INFO_LEAD
"Parallel Protocol Request negotiation to this "
2795 "device.\n", p
->host_no
, CTL_OF_SCB(scb
));
2798 * Disable PPR negotiation and revert back to WDTR and SDTR setup
2800 aic_dev
->needppr
= aic_dev
->needppr_copy
= 0;
2801 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
= 1;
2802 aic_dev
->needwdtr
= aic_dev
->needwdtr_copy
= 1;
2807 queue_depth
= aic_dev
->temp_q_depth
;
2808 if (queue_depth
>= aic_dev
->active_cmds
)
2810 scbp
= scbq_remove_head(&aic_dev
->delayed_scbs
);
2813 if (queue_depth
== 1)
2816 * Give extra preference to untagged devices, such as CD-R devices
2817 * This makes it more likely that a drive *won't* stuff up while
2818 * waiting on data at a critical time, such as CD-R writing and
2819 * audio CD ripping operations. Should also benefit tape drives.
2821 scbq_insert_head(&p
->waiting_scbs
, scbp
);
2825 scbq_insert_tail(&p
->waiting_scbs
, scbp
);
2827 #ifdef AIC7XXX_VERBOSE_DEBUGGING
2828 if (aic7xxx_verbose
> 0xffff)
2829 printk(INFO_LEAD
"Moving SCB from delayed to waiting queue.\n",
2830 p
->host_no
, CTL_OF_SCB(scbp
));
2832 if (queue_depth
> aic_dev
->active_cmds
)
2834 scbp
= scbq_remove_head(&aic_dev
->delayed_scbs
);
2836 scbq_insert_tail(&p
->waiting_scbs
, scbp
);
2840 if (!(scb
->tag_action
))
2842 aic7xxx_index_busy_target(p
, scb
->hscb
->target_channel_lun
,
2844 if (cmd
->device
->simple_tags
)
2846 aic_dev
->temp_q_depth
= aic_dev
->max_q_depth
;
2849 if(scb
->flags
& SCB_DTR_SCB
)
2851 aic_dev
->dtr_pending
= 0;
2853 aic_dev
->active_cmds
--;
2856 if ((scb
->sg_length
>= 512) && (((cmd
->result
>> 16) & 0xf) == DID_OK
))
2862 if (rq_data_dir(cmd
->request
) == WRITE
)
2865 ptr
= aic_dev
->w_bins
;
2870 ptr
= aic_dev
->r_bins
;
2872 if(cmd
->device
->simple_tags
&& cmd
->request
->flags
& REQ_HARDBARRIER
)
2874 aic_dev
->barrier_total
++;
2875 if(scb
->tag_action
== MSG_ORDERED_Q_TAG
)
2876 aic_dev
->ordered_total
++;
2891 aic7xxx_free_scb(p
, scb
);
2892 aic7xxx_queue_cmd_complete(p
, cmd
);
2896 /*+F*************************************************************************
2898 * aic7xxx_run_done_queue
2901 * Calls the aic7xxx_done() for the Scsi_Cmnd of each scb in the
2902 * aborted list, and adds each scb to the free list. If complete
2903 * is TRUE, we also process the commands complete list.
2904 *-F*************************************************************************/
2906 aic7xxx_run_done_queue(struct aic7xxx_host
*p
, /*complete*/ int complete
)
2908 struct aic7xxx_scb
*scb
;
2911 for (i
= 0; i
< p
->scb_data
->numscbs
; i
++)
2913 scb
= p
->scb_data
->scb_array
[i
];
2914 if (scb
->flags
& SCB_QUEUED_FOR_DONE
)
2916 if (scb
->flags
& SCB_QUEUE_FULL
)
2918 scb
->cmd
->result
= QUEUE_FULL
<< 1;
2922 if (aic7xxx_verbose
& (VERBOSE_ABORT_PROCESS
| VERBOSE_RESET_PROCESS
))
2923 printk(INFO_LEAD
"Aborting scb %d\n",
2924 p
->host_no
, CTL_OF_SCB(scb
), scb
->hscb
->tag
);
2926 * Clear any residual information since the normal aic7xxx_done() path
2927 * doesn't touch the residuals.
2929 scb
->hscb
->residual_SG_segment_count
= 0;
2930 scb
->hscb
->residual_data_count
[0] = 0;
2931 scb
->hscb
->residual_data_count
[1] = 0;
2932 scb
->hscb
->residual_data_count
[2] = 0;
2935 aic7xxx_done(p
, scb
);
2938 if (aic7xxx_verbose
& (VERBOSE_ABORT_RETURN
| VERBOSE_RESET_RETURN
))
2940 printk(INFO_LEAD
"%d commands found and queued for "
2941 "completion.\n", p
->host_no
, -1, -1, -1, found
);
2945 aic7xxx_done_cmds_complete(p
);
2949 /*+F*************************************************************************
2951 * aic7xxx_abort_waiting_scb
2954 * Manipulate the waiting for selection list and return the
2955 * scb that follows the one that we remove.
2956 *-F*************************************************************************/
2957 static unsigned char
2958 aic7xxx_abort_waiting_scb(struct aic7xxx_host
*p
, struct aic7xxx_scb
*scb
,
2959 unsigned char scbpos
, unsigned char prev
)
2961 unsigned char curscb
, next
;
2964 * Select the SCB we want to abort and pull the next pointer out of it.
2966 curscb
= aic_inb(p
, SCBPTR
);
2967 aic_outb(p
, scbpos
, SCBPTR
);
2968 next
= aic_inb(p
, SCB_NEXT
);
2970 aic7xxx_add_curscb_to_free_list(p
);
2973 * Update the waiting list
2975 if (prev
== SCB_LIST_NULL
)
2980 aic_outb(p
, next
, WAITING_SCBH
);
2985 * Select the scb that pointed to us and update its next pointer.
2987 aic_outb(p
, prev
, SCBPTR
);
2988 aic_outb(p
, next
, SCB_NEXT
);
2991 * Point us back at the original scb position and inform the SCSI
2992 * system that the command has been aborted.
2994 aic_outb(p
, curscb
, SCBPTR
);
2998 /*+F*************************************************************************
3000 * aic7xxx_search_qinfifo
3003 * Search the queue-in FIFO for matching SCBs and conditionally
3004 * requeue. Returns the number of matching SCBs.
3005 *-F*************************************************************************/
3007 aic7xxx_search_qinfifo(struct aic7xxx_host
*p
, int target
, int channel
,
3008 int lun
, unsigned char tag
, int flags
, int requeue
,
3009 volatile scb_queue_type
*queue
)
3012 unsigned char qinpos
, qintail
;
3013 struct aic7xxx_scb
*scbp
;
3016 qinpos
= aic_inb(p
, QINPOS
);
3017 qintail
= p
->qinfifonext
;
3019 p
->qinfifonext
= qinpos
;
3021 while (qinpos
!= qintail
)
3023 scbp
= p
->scb_data
->scb_array
[p
->qinfifo
[qinpos
++]];
3024 if (aic7xxx_match_scb(p
, scbp
, target
, channel
, lun
, tag
))
3027 * We found an scb that needs to be removed.
3029 if (requeue
&& (queue
!= NULL
))
3031 if (scbp
->flags
& SCB_WAITINGQ
)
3033 scbq_remove(queue
, scbp
);
3034 scbq_remove(&p
->waiting_scbs
, scbp
);
3035 scbq_remove(&AIC_DEV(scbp
->cmd
)->delayed_scbs
, scbp
);
3036 AIC_DEV(scbp
->cmd
)->active_cmds
++;
3039 scbq_insert_tail(queue
, scbp
);
3040 AIC_DEV(scbp
->cmd
)->active_cmds
--;
3042 scbp
->flags
|= SCB_WAITINGQ
;
3043 if ( !(scbp
->tag_action
& TAG_ENB
) )
3045 aic7xxx_index_busy_target(p
, scbp
->hscb
->target_channel_lun
,
3051 p
->qinfifo
[p
->qinfifonext
++] = scbp
->hscb
->tag
;
3056 * Preserve any SCB_RECOVERY_SCB flags on this scb then set the
3057 * flags we were called with, presumeably so aic7xxx_run_done_queue
3060 scbp
->flags
= flags
| (scbp
->flags
& SCB_RECOVERY_SCB
);
3061 if (aic7xxx_index_busy_target(p
, scbp
->hscb
->target_channel_lun
,
3062 FALSE
) == scbp
->hscb
->tag
)
3064 aic7xxx_index_busy_target(p
, scbp
->hscb
->target_channel_lun
,
3072 p
->qinfifo
[p
->qinfifonext
++] = scbp
->hscb
->tag
;
3076 * Now that we've done the work, clear out any left over commands in the
3077 * qinfifo and update the KERNEL_QINPOS down on the card.
3079 * NOTE: This routine expect the sequencer to already be paused when
3080 * it is run....make sure it's that way!
3082 qinpos
= p
->qinfifonext
;
3083 while(qinpos
!= qintail
)
3085 p
->qinfifo
[qinpos
++] = SCB_LIST_NULL
;
3087 if (p
->features
& AHC_QUEUE_REGS
)
3088 aic_outb(p
, p
->qinfifonext
, HNSCB_QOFF
);
3090 aic_outb(p
, p
->qinfifonext
, KERNEL_QINPOS
);
3095 /*+F*************************************************************************
3097 * aic7xxx_scb_on_qoutfifo
3100 * Is the scb that was passed to us currently on the qoutfifo?
3101 *-F*************************************************************************/
3103 aic7xxx_scb_on_qoutfifo(struct aic7xxx_host
*p
, struct aic7xxx_scb
*scb
)
3107 while(p
->qoutfifo
[(p
->qoutfifonext
+ i
) & 0xff ] != SCB_LIST_NULL
)
3109 if(p
->qoutfifo
[(p
->qoutfifonext
+ i
) & 0xff ] == scb
->hscb
->tag
)
3118 /*+F*************************************************************************
3120 * aic7xxx_reset_device
3123 * The device at the given target/channel has been reset. Abort
3124 * all active and queued scbs for that target/channel. This function
3125 * need not worry about linked next pointers because if was a MSG_ABORT_TAG
3126 * then we had a tagged command (no linked next), if it was MSG_ABORT or
3127 * MSG_BUS_DEV_RESET then the device won't know about any commands any more
3128 * and no busy commands will exist, and if it was a bus reset, then nothing
3129 * knows about any linked next commands any more. In all cases, we don't
3130 * need to worry about the linked next or busy scb, we just need to clear
3132 *-F*************************************************************************/
3134 aic7xxx_reset_device(struct aic7xxx_host
*p
, int target
, int channel
,
3135 int lun
, unsigned char tag
)
3137 struct aic7xxx_scb
*scbp
, *prev_scbp
;
3138 struct scsi_device
*sd
;
3139 unsigned char active_scb
, tcl
, scb_tag
;
3140 int i
= 0, init_lists
= FALSE
;
3141 struct aic_dev_data
*aic_dev
;
3144 * Restore this when we're done
3146 active_scb
= aic_inb(p
, SCBPTR
);
3147 scb_tag
= aic_inb(p
, SCB_TAG
);
3149 if (aic7xxx_verbose
& (VERBOSE_RESET_PROCESS
| VERBOSE_ABORT_PROCESS
))
3151 printk(INFO_LEAD
"Reset device, hardware_scb %d,\n",
3152 p
->host_no
, channel
, target
, lun
, active_scb
);
3153 printk(INFO_LEAD
"Current scb %d, SEQADDR 0x%x, LASTPHASE "
3155 p
->host_no
, channel
, target
, lun
, scb_tag
,
3156 aic_inb(p
, SEQADDR0
) | (aic_inb(p
, SEQADDR1
) << 8),
3157 aic_inb(p
, LASTPHASE
));
3158 printk(INFO_LEAD
"SG_CACHEPTR 0x%x, SG_COUNT %d, SCSISIGI 0x%x\n",
3159 p
->host_no
, channel
, target
, lun
,
3160 (p
->features
& AHC_ULTRA2
) ? aic_inb(p
, SG_CACHEPTR
) : 0,
3161 aic_inb(p
, SG_COUNT
), aic_inb(p
, SCSISIGI
));
3162 printk(INFO_LEAD
"SSTAT0 0x%x, SSTAT1 0x%x, SSTAT2 0x%x\n",
3163 p
->host_no
, channel
, target
, lun
, aic_inb(p
, SSTAT0
),
3164 aic_inb(p
, SSTAT1
), aic_inb(p
, SSTAT2
));
3168 * Deal with the busy target and linked next issues.
3170 list_for_each_entry(aic_dev
, &p
->aic_devs
, list
)
3172 if (aic7xxx_verbose
& (VERBOSE_RESET_PROCESS
| VERBOSE_ABORT_PROCESS
))
3173 printk(INFO_LEAD
"processing aic_dev %p\n", p
->host_no
, channel
, target
,
3175 sd
= aic_dev
->SDptr
;
3177 if((target
!= ALL_TARGETS
&& target
!= sd
->id
) ||
3178 (channel
!= ALL_CHANNELS
&& channel
!= sd
->channel
))
3180 if (aic7xxx_verbose
& (VERBOSE_ABORT_PROCESS
| VERBOSE_RESET_PROCESS
))
3181 printk(INFO_LEAD
"Cleaning up status information "
3182 "and delayed_scbs.\n", p
->host_no
, sd
->channel
, sd
->id
, sd
->lun
);
3183 aic_dev
->flags
&= ~BUS_DEVICE_RESET_PENDING
;
3184 if ( tag
== SCB_LIST_NULL
)
3186 aic_dev
->dtr_pending
= 0;
3187 aic_dev
->needppr
= aic_dev
->needppr_copy
;
3188 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
;
3189 aic_dev
->needwdtr
= aic_dev
->needwdtr_copy
;
3190 aic_dev
->flags
= DEVICE_PRINT_DTR
;
3191 aic_dev
->temp_q_depth
= aic_dev
->max_q_depth
;
3193 tcl
= (sd
->id
<< 4) | (sd
->channel
<< 3) | sd
->lun
;
3194 if ( (aic7xxx_index_busy_target(p
, tcl
, FALSE
) == tag
) ||
3195 (tag
== SCB_LIST_NULL
) )
3196 aic7xxx_index_busy_target(p
, tcl
, /* unbusy */ TRUE
);
3198 scbp
= aic_dev
->delayed_scbs
.head
;
3199 while (scbp
!= NULL
)
3202 scbp
= scbp
->q_next
;
3203 if (aic7xxx_match_scb(p
, prev_scbp
, target
, channel
, lun
, tag
))
3205 scbq_remove(&aic_dev
->delayed_scbs
, prev_scbp
);
3206 if (prev_scbp
->flags
& SCB_WAITINGQ
)
3208 aic_dev
->active_cmds
++;
3211 prev_scbp
->flags
&= ~(SCB_ACTIVE
| SCB_WAITINGQ
);
3212 prev_scbp
->flags
|= SCB_RESET
| SCB_QUEUED_FOR_DONE
;
3217 if (aic7xxx_verbose
& (VERBOSE_ABORT_PROCESS
| VERBOSE_RESET_PROCESS
))
3218 printk(INFO_LEAD
"Cleaning QINFIFO.\n", p
->host_no
, channel
, target
, lun
);
3219 aic7xxx_search_qinfifo(p
, target
, channel
, lun
, tag
,
3220 SCB_RESET
| SCB_QUEUED_FOR_DONE
, /* requeue */ FALSE
, NULL
);
3223 * Search the waiting_scbs queue for matches, this catches any SCB_QUEUED
3224 * ABORT/RESET commands.
3226 if (aic7xxx_verbose
& (VERBOSE_ABORT_PROCESS
| VERBOSE_RESET_PROCESS
))
3227 printk(INFO_LEAD
"Cleaning waiting_scbs.\n", p
->host_no
, channel
,
3230 struct aic7xxx_scb
*scbp
, *prev_scbp
;
3233 scbp
= p
->waiting_scbs
.head
;
3234 while (scbp
!= NULL
)
3237 scbp
= scbp
->q_next
;
3238 if (aic7xxx_match_scb(p
, prev_scbp
, target
, channel
, lun
, tag
))
3240 scbq_remove(&p
->waiting_scbs
, prev_scbp
);
3241 if (prev_scbp
->flags
& SCB_WAITINGQ
)
3243 AIC_DEV(prev_scbp
->cmd
)->active_cmds
++;
3246 prev_scbp
->flags
&= ~(SCB_ACTIVE
| SCB_WAITINGQ
);
3247 prev_scbp
->flags
|= SCB_RESET
| SCB_QUEUED_FOR_DONE
;
3254 * Search waiting for selection list.
3256 if (aic7xxx_verbose
& (VERBOSE_ABORT_PROCESS
| VERBOSE_RESET_PROCESS
))
3257 printk(INFO_LEAD
"Cleaning waiting for selection "
3258 "list.\n", p
->host_no
, channel
, target
, lun
);
3260 unsigned char next
, prev
, scb_index
;
3262 next
= aic_inb(p
, WAITING_SCBH
); /* Start at head of list. */
3263 prev
= SCB_LIST_NULL
;
3264 while (next
!= SCB_LIST_NULL
)
3266 aic_outb(p
, next
, SCBPTR
);
3267 scb_index
= aic_inb(p
, SCB_TAG
);
3268 if (scb_index
>= p
->scb_data
->numscbs
)
3271 * No aic7xxx_verbose check here.....we want to see this since it
3272 * means either the kernel driver or the sequencer screwed things up
3274 printk(WARN_LEAD
"Waiting List inconsistency; SCB index=%d, "
3275 "numscbs=%d\n", p
->host_no
, channel
, target
, lun
, scb_index
,
3276 p
->scb_data
->numscbs
);
3277 next
= aic_inb(p
, SCB_NEXT
);
3278 aic7xxx_add_curscb_to_free_list(p
);
3282 scbp
= p
->scb_data
->scb_array
[scb_index
];
3283 if (aic7xxx_match_scb(p
, scbp
, target
, channel
, lun
, tag
))
3285 next
= aic7xxx_abort_waiting_scb(p
, scbp
, next
, prev
);
3286 if (scbp
->flags
& SCB_WAITINGQ
)
3288 AIC_DEV(scbp
->cmd
)->active_cmds
++;
3291 scbp
->flags
&= ~(SCB_ACTIVE
| SCB_WAITINGQ
);
3292 scbp
->flags
|= SCB_RESET
| SCB_QUEUED_FOR_DONE
;
3293 if (prev
== SCB_LIST_NULL
)
3296 * This is either the first scb on the waiting list, or we
3297 * have already yanked the first and haven't left any behind.
3298 * Either way, we need to turn off the selection hardware if
3299 * it isn't already off.
3301 aic_outb(p
, aic_inb(p
, SCSISEQ
) & ~ENSELO
, SCSISEQ
);
3302 aic_outb(p
, CLRSELTIMEO
, CLRSINT1
);
3308 next
= aic_inb(p
, SCB_NEXT
);
3315 * Go through disconnected list and remove any entries we have queued
3316 * for completion, zeroing their control byte too.
3318 if (aic7xxx_verbose
& (VERBOSE_ABORT_PROCESS
| VERBOSE_RESET_PROCESS
))
3319 printk(INFO_LEAD
"Cleaning disconnected scbs "
3320 "list.\n", p
->host_no
, channel
, target
, lun
);
3321 if (p
->flags
& AHC_PAGESCBS
)
3323 unsigned char next
, prev
, scb_index
;
3325 next
= aic_inb(p
, DISCONNECTED_SCBH
);
3326 prev
= SCB_LIST_NULL
;
3327 while (next
!= SCB_LIST_NULL
)
3329 aic_outb(p
, next
, SCBPTR
);
3330 scb_index
= aic_inb(p
, SCB_TAG
);
3331 if (scb_index
> p
->scb_data
->numscbs
)
3333 printk(WARN_LEAD
"Disconnected List inconsistency; SCB index=%d, "
3334 "numscbs=%d\n", p
->host_no
, channel
, target
, lun
, scb_index
,
3335 p
->scb_data
->numscbs
);
3336 next
= aic7xxx_rem_scb_from_disc_list(p
, next
, prev
);
3340 scbp
= p
->scb_data
->scb_array
[scb_index
];
3341 if (aic7xxx_match_scb(p
, scbp
, target
, channel
, lun
, tag
))
3343 next
= aic7xxx_rem_scb_from_disc_list(p
, next
, prev
);
3344 if (scbp
->flags
& SCB_WAITINGQ
)
3346 AIC_DEV(scbp
->cmd
)->active_cmds
++;
3349 scbp
->flags
&= ~(SCB_ACTIVE
| SCB_WAITINGQ
);
3350 scbp
->flags
|= SCB_RESET
| SCB_QUEUED_FOR_DONE
;
3351 scbp
->hscb
->control
= 0;
3356 next
= aic_inb(p
, SCB_NEXT
);
3363 * Walk the free list making sure no entries on the free list have
3364 * a valid SCB_TAG value or SCB_CONTROL byte.
3366 if (p
->flags
& AHC_PAGESCBS
)
3370 next
= aic_inb(p
, FREE_SCBH
);
3371 while (next
!= SCB_LIST_NULL
)
3373 aic_outb(p
, next
, SCBPTR
);
3374 if (aic_inb(p
, SCB_TAG
) < p
->scb_data
->numscbs
)
3376 printk(WARN_LEAD
"Free list inconsistency!.\n", p
->host_no
, channel
,
3379 next
= SCB_LIST_NULL
;
3383 aic_outb(p
, SCB_LIST_NULL
, SCB_TAG
);
3384 aic_outb(p
, 0, SCB_CONTROL
);
3385 next
= aic_inb(p
, SCB_NEXT
);
3391 * Go through the hardware SCB array looking for commands that
3392 * were active but not on any list.
3396 aic_outb(p
, SCB_LIST_NULL
, FREE_SCBH
);
3397 aic_outb(p
, SCB_LIST_NULL
, WAITING_SCBH
);
3398 aic_outb(p
, SCB_LIST_NULL
, DISCONNECTED_SCBH
);
3400 for (i
= p
->scb_data
->maxhscbs
- 1; i
>= 0; i
--)
3402 unsigned char scbid
;
3404 aic_outb(p
, i
, SCBPTR
);
3407 aic_outb(p
, SCB_LIST_NULL
, SCB_TAG
);
3408 aic_outb(p
, SCB_LIST_NULL
, SCB_NEXT
);
3409 aic_outb(p
, 0, SCB_CONTROL
);
3410 aic7xxx_add_curscb_to_free_list(p
);
3414 scbid
= aic_inb(p
, SCB_TAG
);
3415 if (scbid
< p
->scb_data
->numscbs
)
3417 scbp
= p
->scb_data
->scb_array
[scbid
];
3418 if (aic7xxx_match_scb(p
, scbp
, target
, channel
, lun
, tag
))
3420 aic_outb(p
, 0, SCB_CONTROL
);
3421 aic_outb(p
, SCB_LIST_NULL
, SCB_TAG
);
3422 aic7xxx_add_curscb_to_free_list(p
);
3429 * Go through the entire SCB array now and look for commands for
3430 * for this target that are stillactive. These are other (most likely
3431 * tagged) commands that were disconnected when the reset occurred.
3432 * Any commands we find here we know this about, it wasn't on any queue,
3433 * it wasn't in the qinfifo, it wasn't in the disconnected or waiting
3434 * lists, so it really must have been a paged out SCB. In that case,
3435 * we shouldn't need to bother with updating any counters, just mark
3436 * the correct flags and go on.
3438 for (i
= 0; i
< p
->scb_data
->numscbs
; i
++)
3440 scbp
= p
->scb_data
->scb_array
[i
];
3441 if ((scbp
->flags
& SCB_ACTIVE
) &&
3442 aic7xxx_match_scb(p
, scbp
, target
, channel
, lun
, tag
) &&
3443 !aic7xxx_scb_on_qoutfifo(p
, scbp
))
3445 if (scbp
->flags
& SCB_WAITINGQ
)
3447 scbq_remove(&p
->waiting_scbs
, scbp
);
3448 scbq_remove(&AIC_DEV(scbp
->cmd
)->delayed_scbs
, scbp
);
3449 AIC_DEV(scbp
->cmd
)->active_cmds
++;
3452 scbp
->flags
|= SCB_RESET
| SCB_QUEUED_FOR_DONE
;
3453 scbp
->flags
&= ~(SCB_ACTIVE
| SCB_WAITINGQ
);
3457 aic_outb(p
, active_scb
, SCBPTR
);
3461 /*+F*************************************************************************
3463 * aic7xxx_clear_intstat
3466 * Clears the interrupt status.
3467 *-F*************************************************************************/
3469 aic7xxx_clear_intstat(struct aic7xxx_host
*p
)
3471 /* Clear any interrupt conditions this may have caused. */
3472 aic_outb(p
, CLRSELDO
| CLRSELDI
| CLRSELINGO
, CLRSINT0
);
3473 aic_outb(p
, CLRSELTIMEO
| CLRATNO
| CLRSCSIRSTI
| CLRBUSFREE
| CLRSCSIPERR
|
3474 CLRPHASECHG
| CLRREQINIT
, CLRSINT1
);
3475 aic_outb(p
, CLRSCSIINT
| CLRSEQINT
| CLRBRKADRINT
| CLRPARERR
, CLRINT
);
3478 /*+F*************************************************************************
3480 * aic7xxx_reset_current_bus
3483 * Reset the current SCSI bus.
3484 *-F*************************************************************************/
3486 aic7xxx_reset_current_bus(struct aic7xxx_host
*p
)
3489 /* Disable reset interrupts. */
3490 aic_outb(p
, aic_inb(p
, SIMODE1
) & ~ENSCSIRST
, SIMODE1
);
3492 /* Turn off the bus' current operations, after all, we shouldn't have any
3493 * valid commands left to cause a RSELI and SELO once we've tossed the
3494 * bus away with this reset, so we might as well shut down the sequencer
3495 * until the bus is restarted as oppossed to saving the current settings
3496 * and restoring them (which makes no sense to me). */
3498 /* Turn on the bus reset. */
3499 aic_outb(p
, aic_inb(p
, SCSISEQ
) | SCSIRSTO
, SCSISEQ
);
3500 while ( (aic_inb(p
, SCSISEQ
) & SCSIRSTO
) == 0)
3504 * Some of the new Ultra2 chipsets need a longer delay after a chip
3505 * reset than just the init setup creates, so we have to delay here
3506 * before we go into a reset in order to make the chips happy.
3508 if (p
->features
& AHC_ULTRA2
)
3513 /* Turn off the bus reset. */
3514 aic_outb(p
, 0, SCSISEQ
);
3517 aic7xxx_clear_intstat(p
);
3518 /* Re-enable reset interrupts. */
3519 aic_outb(p
, aic_inb(p
, SIMODE1
) | ENSCSIRST
, SIMODE1
);
3523 /*+F*************************************************************************
3525 * aic7xxx_reset_channel
3528 * Reset the channel.
3529 *-F*************************************************************************/
3531 aic7xxx_reset_channel(struct aic7xxx_host
*p
, int channel
, int initiate_reset
)
3533 unsigned long offset_min
, offset_max
;
3534 unsigned char sblkctl
;
3537 if (aic7xxx_verbose
& VERBOSE_RESET_PROCESS
)
3538 printk(INFO_LEAD
"Reset channel called, %s initiate reset.\n",
3539 p
->host_no
, channel
, -1, -1, (initiate_reset
==TRUE
) ? "will" : "won't" );
3549 if (p
->features
& AHC_TWIN
)
3558 if (p
->features
& AHC_WIDE
)
3569 while (offset_min
< offset_max
)
3572 * Revert to async/narrow transfers until we renegotiate.
3574 aic_outb(p
, 0, TARG_SCSIRATE
+ offset_min
);
3575 if (p
->features
& AHC_ULTRA2
)
3577 aic_outb(p
, 0, TARG_OFFSET
+ offset_min
);
3583 * Reset the bus and unpause/restart the controller
3585 sblkctl
= aic_inb(p
, SBLKCTL
);
3586 if ( (p
->chip
& AHC_CHIPID_MASK
) == AHC_AIC7770
)
3587 cur_channel
= (sblkctl
& SELBUSB
) >> 3;
3590 if ( (cur_channel
!= channel
) && (p
->features
& AHC_TWIN
) )
3593 * Case 1: Command for another bus is active
3595 if (aic7xxx_verbose
& VERBOSE_RESET_PROCESS
)
3596 printk(INFO_LEAD
"Stealthily resetting idle channel.\n", p
->host_no
,
3599 * Stealthily reset the other bus without upsetting the current bus.
3601 aic_outb(p
, sblkctl
^ SELBUSB
, SBLKCTL
);
3602 aic_outb(p
, aic_inb(p
, SIMODE1
) & ~ENBUSFREE
, SIMODE1
);
3605 aic7xxx_reset_current_bus(p
);
3607 aic_outb(p
, aic_inb(p
, SCSISEQ
) & (ENSELI
|ENRSELI
|ENAUTOATNP
), SCSISEQ
);
3608 aic7xxx_clear_intstat(p
);
3609 aic_outb(p
, sblkctl
, SBLKCTL
);
3614 * Case 2: A command from this bus is active or we're idle.
3616 if (aic7xxx_verbose
& VERBOSE_RESET_PROCESS
)
3617 printk(INFO_LEAD
"Resetting currently active channel.\n", p
->host_no
,
3619 aic_outb(p
, aic_inb(p
, SIMODE1
) & ~(ENBUSFREE
|ENREQINIT
),
3621 p
->flags
&= ~AHC_HANDLING_REQINITS
;
3622 p
->msg_type
= MSG_TYPE_NONE
;
3626 aic7xxx_reset_current_bus(p
);
3628 aic_outb(p
, aic_inb(p
, SCSISEQ
) & (ENSELI
|ENRSELI
|ENAUTOATNP
), SCSISEQ
);
3629 aic7xxx_clear_intstat(p
);
3631 if (aic7xxx_verbose
& VERBOSE_RESET_RETURN
)
3632 printk(INFO_LEAD
"Channel reset\n", p
->host_no
, channel
, -1, -1);
3634 * Clean up all the state information for the pending transactions
3637 aic7xxx_reset_device(p
, ALL_TARGETS
, channel
, ALL_LUNS
, SCB_LIST_NULL
);
3639 if ( !(p
->features
& AHC_TWIN
) )
3641 restart_sequencer(p
);
3647 /*+F*************************************************************************
3649 * aic7xxx_run_waiting_queues
3652 * Scan the awaiting_scbs queue downloading and starting as many
3654 *-F*************************************************************************/
3656 aic7xxx_run_waiting_queues(struct aic7xxx_host
*p
)
3658 struct aic7xxx_scb
*scb
;
3659 struct aic_dev_data
*aic_dev
;
3663 if (p
->waiting_scbs
.head
== NULL
)
3669 * First handle SCBs that are waiting but have been assigned a slot.
3671 while ((scb
= scbq_remove_head(&p
->waiting_scbs
)) != NULL
)
3673 aic_dev
= scb
->cmd
->device
->hostdata
;
3674 if ( !scb
->tag_action
)
3676 aic_dev
->temp_q_depth
= 1;
3678 if ( aic_dev
->active_cmds
>= aic_dev
->temp_q_depth
)
3680 scbq_insert_tail(&aic_dev
->delayed_scbs
, scb
);
3684 scb
->flags
&= ~SCB_WAITINGQ
;
3685 aic_dev
->active_cmds
++;
3687 if ( !(scb
->tag_action
) )
3689 aic7xxx_busy_target(p
, scb
);
3691 p
->qinfifo
[p
->qinfifonext
++] = scb
->hscb
->tag
;
3697 if (p
->features
& AHC_QUEUE_REGS
)
3698 aic_outb(p
, p
->qinfifonext
, HNSCB_QOFF
);
3702 aic_outb(p
, p
->qinfifonext
, KERNEL_QINPOS
);
3703 unpause_sequencer(p
, FALSE
);
3705 if (p
->activescbs
> p
->max_activescbs
)
3706 p
->max_activescbs
= p
->activescbs
;
3719 /*+F*************************************************************************
3724 * Check the scsi card for PCI errors and clear the interrupt
3726 * NOTE: If you don't have this function and a 2940 card encounters
3727 * a PCI error condition, the machine will end up locked as the
3728 * interrupt handler gets slammed with non-stop PCI error interrupts
3729 *-F*************************************************************************/
3731 aic7xxx_pci_intr(struct aic7xxx_host
*p
)
3733 unsigned char status1
;
3735 pci_read_config_byte(p
->pdev
, PCI_STATUS
+ 1, &status1
);
3737 if ( (status1
& DPE
) && (aic7xxx_verbose
& VERBOSE_MINOR_ERROR
) )
3738 printk(WARN_LEAD
"Data Parity Error during PCI address or PCI write"
3739 "phase.\n", p
->host_no
, -1, -1, -1);
3740 if ( (status1
& SSE
) && (aic7xxx_verbose
& VERBOSE_MINOR_ERROR
) )
3741 printk(WARN_LEAD
"Signal System Error Detected\n", p
->host_no
,
3743 if ( (status1
& RMA
) && (aic7xxx_verbose
& VERBOSE_MINOR_ERROR
) )
3744 printk(WARN_LEAD
"Received a PCI Master Abort\n", p
->host_no
,
3746 if ( (status1
& RTA
) && (aic7xxx_verbose
& VERBOSE_MINOR_ERROR
) )
3747 printk(WARN_LEAD
"Received a PCI Target Abort\n", p
->host_no
,
3749 if ( (status1
& STA
) && (aic7xxx_verbose
& VERBOSE_MINOR_ERROR
) )
3750 printk(WARN_LEAD
"Signaled a PCI Target Abort\n", p
->host_no
,
3752 if ( (status1
& DPR
) && (aic7xxx_verbose
& VERBOSE_MINOR_ERROR
) )
3753 printk(WARN_LEAD
"Data Parity Error has been reported via PCI pin "
3754 "PERR#\n", p
->host_no
, -1, -1, -1);
3756 pci_write_config_byte(p
->pdev
, PCI_STATUS
+ 1, status1
);
3757 if (status1
& (DPR
|RMA
|RTA
))
3758 aic_outb(p
, CLRPARERR
, CLRINT
);
3760 if ( (aic7xxx_panic_on_abort
) && (p
->spurious_int
> 500) )
3761 aic7xxx_panic_abort(p
, NULL
);
3764 #endif /* CONFIG_PCI */
3766 /*+F*************************************************************************
3768 * aic7xxx_construct_ppr
3771 * Build up a Parallel Protocol Request message for use with SCSI-3
3773 *-F*************************************************************************/
3775 aic7xxx_construct_ppr(struct aic7xxx_host
*p
, struct aic7xxx_scb
*scb
)
3777 p
->msg_buf
[p
->msg_index
++] = MSG_EXTENDED
;
3778 p
->msg_buf
[p
->msg_index
++] = MSG_EXT_PPR_LEN
;
3779 p
->msg_buf
[p
->msg_index
++] = MSG_EXT_PPR
;
3780 p
->msg_buf
[p
->msg_index
++] = AIC_DEV(scb
->cmd
)->goal
.period
;
3781 p
->msg_buf
[p
->msg_index
++] = 0;
3782 p
->msg_buf
[p
->msg_index
++] = AIC_DEV(scb
->cmd
)->goal
.offset
;
3783 p
->msg_buf
[p
->msg_index
++] = AIC_DEV(scb
->cmd
)->goal
.width
;
3784 p
->msg_buf
[p
->msg_index
++] = AIC_DEV(scb
->cmd
)->goal
.options
;
3788 /*+F*************************************************************************
3790 * aic7xxx_construct_sdtr
3793 * Constucts a synchronous data transfer message in the message
3794 * buffer on the sequencer.
3795 *-F*************************************************************************/
3797 aic7xxx_construct_sdtr(struct aic7xxx_host
*p
, unsigned char period
,
3798 unsigned char offset
)
3800 p
->msg_buf
[p
->msg_index
++] = MSG_EXTENDED
;
3801 p
->msg_buf
[p
->msg_index
++] = MSG_EXT_SDTR_LEN
;
3802 p
->msg_buf
[p
->msg_index
++] = MSG_EXT_SDTR
;
3803 p
->msg_buf
[p
->msg_index
++] = period
;
3804 p
->msg_buf
[p
->msg_index
++] = offset
;
3808 /*+F*************************************************************************
3810 * aic7xxx_construct_wdtr
3813 * Constucts a wide data transfer message in the message buffer
3815 *-F*************************************************************************/
3817 aic7xxx_construct_wdtr(struct aic7xxx_host
*p
, unsigned char bus_width
)
3819 p
->msg_buf
[p
->msg_index
++] = MSG_EXTENDED
;
3820 p
->msg_buf
[p
->msg_index
++] = MSG_EXT_WDTR_LEN
;
3821 p
->msg_buf
[p
->msg_index
++] = MSG_EXT_WDTR
;
3822 p
->msg_buf
[p
->msg_index
++] = bus_width
;
3826 /*+F*************************************************************************
3828 * aic7xxx_calc_residual
3831 * Calculate the residual data not yet transferred.
3832 *-F*************************************************************************/
3834 aic7xxx_calculate_residual (struct aic7xxx_host
*p
, struct aic7xxx_scb
*scb
)
3836 struct aic7xxx_hwscb
*hscb
;
3844 * Don't destroy valid residual information with
3845 * residual coming from a check sense operation.
3847 if (((scb
->hscb
->control
& DISCONNECTED
) == 0) &&
3848 (scb
->flags
& SCB_SENSE
) == 0)
3851 * We had an underflow. At this time, there's only
3852 * one other driver that bothers to check for this,
3853 * and cmd->underflow seems to be set rather half-
3854 * heartedly in the higher-level SCSI code.
3856 actual
= scb
->sg_length
;
3857 for (i
=1; i
< hscb
->residual_SG_segment_count
; i
++)
3859 actual
-= scb
->sg_list
[scb
->sg_count
- i
].length
;
3861 actual
-= (hscb
->residual_data_count
[2] << 16) |
3862 (hscb
->residual_data_count
[1] << 8) |
3863 hscb
->residual_data_count
[0];
3865 if (actual
< cmd
->underflow
)
3867 if (aic7xxx_verbose
& VERBOSE_MINOR_ERROR
)
3869 printk(INFO_LEAD
"Underflow - Wanted %u, %s %u, residual SG "
3870 "count %d.\n", p
->host_no
, CTL_OF_SCB(scb
), cmd
->underflow
,
3871 (rq_data_dir(cmd
->request
) == WRITE
) ? "wrote" : "read", actual
,
3872 hscb
->residual_SG_segment_count
);
3873 printk(INFO_LEAD
"status 0x%x.\n", p
->host_no
, CTL_OF_SCB(scb
),
3874 hscb
->target_status
);
3877 * In 2.4, only send back the residual information, don't flag this
3878 * as an error. Before 2.4 we had to flag this as an error because
3879 * the mid layer didn't check residual data counts to see if the
3880 * command needs retried.
3882 cmd
->resid
= scb
->sg_length
- actual
;
3883 aic7xxx_status(cmd
) = hscb
->target_status
;
3888 * Clean out the residual information in the SCB for the
3891 hscb
->residual_data_count
[2] = 0;
3892 hscb
->residual_data_count
[1] = 0;
3893 hscb
->residual_data_count
[0] = 0;
3894 hscb
->residual_SG_segment_count
= 0;
3897 /*+F*************************************************************************
3899 * aic7xxx_handle_device_reset
3902 * Interrupt handler for sequencer interrupts (SEQINT).
3903 *-F*************************************************************************/
3905 aic7xxx_handle_device_reset(struct aic7xxx_host
*p
, int target
, int channel
)
3907 unsigned char tindex
= target
;
3909 tindex
|= ((channel
& 0x01) << 3);
3912 * Go back to async/narrow transfers and renegotiate.
3914 aic_outb(p
, 0, TARG_SCSIRATE
+ tindex
);
3915 if (p
->features
& AHC_ULTRA2
)
3916 aic_outb(p
, 0, TARG_OFFSET
+ tindex
);
3917 aic7xxx_reset_device(p
, target
, channel
, ALL_LUNS
, SCB_LIST_NULL
);
3918 if (aic7xxx_verbose
& VERBOSE_RESET_PROCESS
)
3919 printk(INFO_LEAD
"Bus Device Reset delivered.\n", p
->host_no
, channel
,
3921 aic7xxx_run_done_queue(p
, /*complete*/ TRUE
);
3924 /*+F*************************************************************************
3926 * aic7xxx_handle_seqint
3929 * Interrupt handler for sequencer interrupts (SEQINT).
3930 *-F*************************************************************************/
3932 aic7xxx_handle_seqint(struct aic7xxx_host
*p
, unsigned char intstat
)
3934 struct aic7xxx_scb
*scb
;
3935 struct aic_dev_data
*aic_dev
;
3936 unsigned short target_mask
;
3937 unsigned char target
, lun
, tindex
;
3938 unsigned char queue_flag
= FALSE
;
3942 target
= ((aic_inb(p
, SAVED_TCL
) >> 4) & 0x0f);
3943 if ( (p
->chip
& AHC_CHIPID_MASK
) == AHC_AIC7770
)
3944 channel
= (aic_inb(p
, SBLKCTL
) & SELBUSB
) >> 3;
3947 tindex
= target
+ (channel
<< 3);
3948 lun
= aic_inb(p
, SAVED_TCL
) & 0x07;
3949 target_mask
= (0x01 << tindex
);
3952 * Go ahead and clear the SEQINT now, that avoids any interrupt race
3953 * conditions later on in case we enable some other interrupt.
3955 aic_outb(p
, CLRSEQINT
, CLRINT
);
3956 switch (intstat
& SEQINT_MASK
)
3960 aic_outb(p
, aic_inb(p
, SCSISEQ
) & (ENSELI
|ENRSELI
|ENAUTOATNP
),
3962 printk(WARN_LEAD
"No active SCB for reconnecting target - Issuing "
3963 "BUS DEVICE RESET.\n", p
->host_no
, channel
, target
, lun
);
3964 printk(WARN_LEAD
" SAVED_TCL=0x%x, ARG_1=0x%x, SEQADDR=0x%x\n",
3965 p
->host_no
, channel
, target
, lun
,
3966 aic_inb(p
, SAVED_TCL
), aic_inb(p
, ARG_1
),
3967 (aic_inb(p
, SEQADDR1
) << 8) | aic_inb(p
, SEQADDR0
));
3968 if (aic7xxx_panic_on_abort
)
3969 aic7xxx_panic_abort(p
, NULL
);
3975 if (aic7xxx_verbose
& VERBOSE_MINOR_ERROR
)
3976 printk(INFO_LEAD
"Rejecting unknown message (0x%x) received from "
3977 "target, SEQ_FLAGS=0x%x\n", p
->host_no
, channel
, target
, lun
,
3978 aic_inb(p
, ACCUM
), aic_inb(p
, SEQ_FLAGS
));
3985 * The reconnecting target either did not send an identify
3986 * message, or did, but we didn't find an SCB to match and
3987 * before it could respond to our ATN/abort, it hit a dataphase.
3988 * The only safe thing to do is to blow it away with a bus
3991 if (aic7xxx_verbose
& (VERBOSE_SEQINT
| VERBOSE_RESET_MID
))
3992 printk(INFO_LEAD
"Target did not send an IDENTIFY message; "
3993 "LASTPHASE 0x%x, SAVED_TCL 0x%x\n", p
->host_no
, channel
, target
,
3994 lun
, aic_inb(p
, LASTPHASE
), aic_inb(p
, SAVED_TCL
));
3996 aic7xxx_reset_channel(p
, channel
, /*initiate reset*/ TRUE
);
3997 aic7xxx_run_done_queue(p
, TRUE
);
4003 if (aic_inb(p
, LASTPHASE
) == P_BUSFREE
)
4005 if (aic7xxx_verbose
& VERBOSE_SEQINT
)
4006 printk(INFO_LEAD
"Missed busfree.\n", p
->host_no
, channel
,
4008 restart_sequencer(p
);
4012 if (aic7xxx_verbose
& VERBOSE_SEQINT
)
4013 printk(INFO_LEAD
"Unknown scsi bus phase, continuing\n", p
->host_no
,
4014 channel
, target
, lun
);
4020 p
->msg_type
= MSG_TYPE_INITIATOR_MSGIN
;
4024 #ifdef AIC7XXX_VERBOSE_DEBUGGING
4025 if (aic7xxx_verbose
> 0xffff)
4026 printk(INFO_LEAD
"Enabling REQINITs for MSG_IN\n", p
->host_no
,
4027 channel
, target
, lun
);
4031 * To actually receive the message, simply turn on
4032 * REQINIT interrupts and let our interrupt handler
4033 * do the rest (REQINIT should already be true).
4035 p
->flags
|= AHC_HANDLING_REQINITS
;
4036 aic_outb(p
, aic_inb(p
, SIMODE1
) | ENREQINIT
, SIMODE1
);
4039 * We don't want the sequencer unpaused yet so we return early
4047 * What we care about here is if we had an outstanding SDTR
4048 * or WDTR message for this target. If we did, this is a
4049 * signal that the target is refusing negotiation.
4051 unsigned char scb_index
;
4052 unsigned char last_msg
;
4054 scb_index
= aic_inb(p
, SCB_TAG
);
4055 scb
= p
->scb_data
->scb_array
[scb_index
];
4056 aic_dev
= AIC_DEV(scb
->cmd
);
4057 last_msg
= aic_inb(p
, LAST_MSG
);
4059 if ( (last_msg
== MSG_IDENTIFYFLAG
) &&
4060 (scb
->tag_action
) &&
4061 !(scb
->flags
& SCB_MSGOUT_BITS
) )
4063 if (scb
->tag_action
== MSG_ORDERED_Q_TAG
)
4066 * OK...the device seems able to accept tagged commands, but
4067 * not ordered tag commands, only simple tag commands. So, we
4068 * disable ordered tag commands and go on with life just like
4071 scsi_adjust_queue_depth(scb
->cmd
->device
, MSG_SIMPLE_TAG
,
4072 scb
->cmd
->device
->queue_depth
);
4073 scb
->tag_action
= MSG_SIMPLE_Q_TAG
;
4074 scb
->hscb
->control
&= ~SCB_TAG_TYPE
;
4075 scb
->hscb
->control
|= MSG_SIMPLE_Q_TAG
;
4076 aic_outb(p
, scb
->hscb
->control
, SCB_CONTROL
);
4078 * OK..we set the tag type to simple tag command, now we re-assert
4079 * ATNO and hope this will take us into the identify phase again
4080 * so we can resend the tag type and info to the device.
4082 aic_outb(p
, MSG_IDENTIFYFLAG
, MSG_OUT
);
4083 aic_outb(p
, aic_inb(p
, SCSISIGI
) | ATNO
, SCSISIGO
);
4085 else if (scb
->tag_action
== MSG_SIMPLE_Q_TAG
)
4088 struct aic7xxx_scb
*scbp
;
4091 * Hmmmm....the device is flaking out on tagged commands.
4093 scsi_adjust_queue_depth(scb
->cmd
->device
, 0 /* untagged */,
4094 p
->host
->cmd_per_lun
);
4095 aic_dev
->max_q_depth
= aic_dev
->temp_q_depth
= 1;
4097 * We set this command up as a bus device reset. However, we have
4098 * to clear the tag type as it's causing us problems. We shouldnt
4099 * have to worry about any other commands being active, since if
4100 * the device is refusing tagged commands, this should be the
4101 * first tagged command sent to the device, however, we do have
4102 * to worry about any other tagged commands that may already be
4103 * in the qinfifo. The easiest way to do this, is to issue a BDR,
4104 * send all the commands back to the mid level code, then let them
4105 * come back and get rebuilt as untagged commands.
4107 scb
->tag_action
= 0;
4108 scb
->hscb
->control
&= ~(TAG_ENB
| SCB_TAG_TYPE
);
4109 aic_outb(p
, scb
->hscb
->control
, SCB_CONTROL
);
4111 old_verbose
= aic7xxx_verbose
;
4112 aic7xxx_verbose
&= ~(VERBOSE_RESET
|VERBOSE_ABORT
);
4113 for (i
=0; i
< p
->scb_data
->numscbs
; i
++)
4115 scbp
= p
->scb_data
->scb_array
[i
];
4116 if ((scbp
->flags
& SCB_ACTIVE
) && (scbp
!= scb
))
4118 if (aic7xxx_match_scb(p
, scbp
, target
, channel
, lun
, i
))
4120 aic7xxx_reset_device(p
, target
, channel
, lun
, i
);
4124 aic7xxx_run_done_queue(p
, TRUE
);
4125 aic7xxx_verbose
= old_verbose
;
4127 * Wait until after the for loop to set the busy index since
4128 * aic7xxx_reset_device will clear the busy index during its
4131 aic7xxx_busy_target(p
, scb
);
4132 printk(INFO_LEAD
"Device is refusing tagged commands, using "
4133 "untagged I/O.\n", p
->host_no
, channel
, target
, lun
);
4134 aic_outb(p
, MSG_IDENTIFYFLAG
, MSG_OUT
);
4135 aic_outb(p
, aic_inb(p
, SCSISIGI
) | ATNO
, SCSISIGO
);
4138 else if (scb
->flags
& SCB_MSGOUT_PPR
)
4141 * As per the draft specs, any device capable of supporting any of
4142 * the option values other than 0 are not allowed to reject the
4143 * PPR message. Instead, they must negotiate out what they do
4144 * support instead of rejecting our offering or else they cause
4145 * a parity error during msg_out phase to signal that they don't
4146 * like our settings.
4148 aic_dev
->needppr
= aic_dev
->needppr_copy
= 0;
4149 aic7xxx_set_width(p
, target
, channel
, lun
, MSG_EXT_WDTR_BUS_8_BIT
,
4150 (AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
|AHC_TRANS_QUITE
), aic_dev
);
4151 aic7xxx_set_syncrate(p
, NULL
, target
, channel
, 0, 0, 0,
4152 AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
|AHC_TRANS_QUITE
,
4154 aic_dev
->goal
.options
= aic_dev
->dtr_pending
= 0;
4155 scb
->flags
&= ~SCB_MSGOUT_BITS
;
4156 if(aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
4158 printk(INFO_LEAD
"Device is rejecting PPR messages, falling "
4159 "back.\n", p
->host_no
, channel
, target
, lun
);
4161 if ( aic_dev
->goal
.width
)
4163 aic_dev
->needwdtr
= aic_dev
->needwdtr_copy
= 1;
4164 aic_dev
->dtr_pending
= 1;
4165 scb
->flags
|= SCB_MSGOUT_WDTR
;
4167 if ( aic_dev
->goal
.offset
)
4169 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
= 1;
4170 if( !aic_dev
->dtr_pending
)
4172 aic_dev
->dtr_pending
= 1;
4173 scb
->flags
|= SCB_MSGOUT_SDTR
;
4176 if ( aic_dev
->dtr_pending
)
4178 aic_outb(p
, HOST_MSG
, MSG_OUT
);
4179 aic_outb(p
, aic_inb(p
, SCSISIGI
) | ATNO
, SCSISIGO
);
4182 else if (scb
->flags
& SCB_MSGOUT_WDTR
)
4185 * note 8bit xfers and clear flag
4187 aic_dev
->needwdtr
= aic_dev
->needwdtr_copy
= 0;
4188 scb
->flags
&= ~SCB_MSGOUT_BITS
;
4189 aic7xxx_set_width(p
, target
, channel
, lun
, MSG_EXT_WDTR_BUS_8_BIT
,
4190 (AHC_TRANS_ACTIVE
|AHC_TRANS_GOAL
|AHC_TRANS_CUR
), aic_dev
);
4191 aic7xxx_set_syncrate(p
, NULL
, target
, channel
, 0, 0, 0,
4192 AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
|AHC_TRANS_QUITE
,
4194 if(aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
4196 printk(INFO_LEAD
"Device is rejecting WDTR messages, using "
4197 "narrow transfers.\n", p
->host_no
, channel
, target
, lun
);
4199 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
;
4201 else if (scb
->flags
& SCB_MSGOUT_SDTR
)
4204 * note asynch xfers and clear flag
4206 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
= 0;
4207 scb
->flags
&= ~SCB_MSGOUT_BITS
;
4208 aic7xxx_set_syncrate(p
, NULL
, target
, channel
, 0, 0, 0,
4209 (AHC_TRANS_CUR
|AHC_TRANS_ACTIVE
|AHC_TRANS_GOAL
), aic_dev
);
4210 if(aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
4212 printk(INFO_LEAD
"Device is rejecting SDTR messages, using "
4213 "async transfers.\n", p
->host_no
, channel
, target
, lun
);
4216 else if (aic7xxx_verbose
& VERBOSE_SEQINT
)
4219 * Otherwise, we ignore it.
4221 printk(INFO_LEAD
"Received MESSAGE_REJECT for unknown cause. "
4222 "Ignoring.\n", p
->host_no
, channel
, target
, lun
);
4229 unsigned char scb_index
;
4230 struct aic7xxx_hwscb
*hscb
;
4233 /* The sequencer will notify us when a command has an error that
4234 * would be of interest to the kernel. This allows us to leave
4235 * the sequencer running in the common case of command completes
4236 * without error. The sequencer will have DMA'd the SCB back
4237 * up to us, so we can reference the drivers SCB array.
4239 * Set the default return value to 0 indicating not to send
4240 * sense. The sense code will change this if needed and this
4241 * reduces code duplication.
4243 aic_outb(p
, 0, RETURN_1
);
4244 scb_index
= aic_inb(p
, SCB_TAG
);
4245 if (scb_index
> p
->scb_data
->numscbs
)
4247 printk(WARN_LEAD
"Invalid SCB during SEQINT 0x%02x, SCB_TAG %d.\n",
4248 p
->host_no
, channel
, target
, lun
, intstat
, scb_index
);
4251 scb
= p
->scb_data
->scb_array
[scb_index
];
4254 if (!(scb
->flags
& SCB_ACTIVE
) || (scb
->cmd
== NULL
))
4256 printk(WARN_LEAD
"Invalid SCB during SEQINT 0x%x, scb %d, flags 0x%x,"
4257 " cmd 0x%lx.\n", p
->host_no
, channel
, target
, lun
, intstat
,
4258 scb_index
, scb
->flags
, (unsigned long) scb
->cmd
);
4263 aic_dev
= AIC_DEV(scb
->cmd
);
4264 hscb
->target_status
= aic_inb(p
, SCB_TARGET_STATUS
);
4265 aic7xxx_status(cmd
) = hscb
->target_status
;
4267 cmd
->result
= hscb
->target_status
;
4269 switch (status_byte(hscb
->target_status
))
4272 if (aic7xxx_verbose
& VERBOSE_SEQINT
)
4273 printk(INFO_LEAD
"Interrupted for status of GOOD???\n",
4274 p
->host_no
, CTL_OF_SCB(scb
));
4277 case COMMAND_TERMINATED
:
4278 case CHECK_CONDITION
:
4279 if ( !(scb
->flags
& SCB_SENSE
) )
4282 * Send a sense command to the requesting target.
4283 * XXX - revisit this and get rid of the memcopys.
4285 memcpy(scb
->sense_cmd
, &generic_sense
[0],
4286 sizeof(generic_sense
));
4288 scb
->sense_cmd
[1] = (cmd
->device
->lun
<< 5);
4289 scb
->sense_cmd
[4] = sizeof(cmd
->sense_buffer
);
4291 scb
->sg_list
[0].length
=
4292 cpu_to_le32(sizeof(cmd
->sense_buffer
));
4293 scb
->sg_list
[0].address
=
4294 cpu_to_le32(pci_map_single(p
->pdev
, cmd
->sense_buffer
,
4295 sizeof(cmd
->sense_buffer
),
4296 PCI_DMA_FROMDEVICE
));
4299 * XXX - We should allow disconnection, but can't as it
4300 * might allow overlapped tagged commands.
4302 /* hscb->control &= DISCENB; */
4304 hscb
->target_status
= 0;
4305 hscb
->SG_list_pointer
=
4306 cpu_to_le32(SCB_DMA_ADDR(scb
, scb
->sg_list
));
4307 hscb
->SCSI_cmd_pointer
=
4308 cpu_to_le32(SCB_DMA_ADDR(scb
, scb
->sense_cmd
));
4309 hscb
->data_count
= scb
->sg_list
[0].length
;
4310 hscb
->data_pointer
= scb
->sg_list
[0].address
;
4311 hscb
->SCSI_cmd_length
= COMMAND_SIZE(scb
->sense_cmd
[0]);
4312 hscb
->residual_SG_segment_count
= 0;
4313 hscb
->residual_data_count
[0] = 0;
4314 hscb
->residual_data_count
[1] = 0;
4315 hscb
->residual_data_count
[2] = 0;
4317 scb
->sg_count
= hscb
->SG_segment_count
= 1;
4318 scb
->sg_length
= sizeof(cmd
->sense_buffer
);
4319 scb
->tag_action
= 0;
4320 scb
->flags
|= SCB_SENSE
;
4322 * Ensure the target is busy since this will be an
4323 * an untagged request.
4325 #ifdef AIC7XXX_VERBOSE_DEBUGGING
4326 if (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
4328 if (scb
->flags
& SCB_MSGOUT_BITS
)
4329 printk(INFO_LEAD
"Requesting SENSE with %s\n", p
->host_no
,
4330 CTL_OF_SCB(scb
), (scb
->flags
& SCB_MSGOUT_SDTR
) ?
4333 printk(INFO_LEAD
"Requesting SENSE, no MSG\n", p
->host_no
,
4337 aic7xxx_busy_target(p
, scb
);
4338 aic_outb(p
, SEND_SENSE
, RETURN_1
);
4339 aic7xxx_error(cmd
) = DID_OK
;
4341 } /* first time sense, no errors */
4342 printk(INFO_LEAD
"CHECK_CONDITION on REQUEST_SENSE, returning "
4343 "an error.\n", p
->host_no
, CTL_OF_SCB(scb
));
4344 aic7xxx_error(cmd
) = DID_ERROR
;
4345 scb
->flags
&= ~SCB_SENSE
;
4349 queue_flag
= TRUE
; /* Mark that this is a QUEUE_FULL and */
4350 case BUSY
: /* drop through to here */
4352 struct aic7xxx_scb
*next_scbp
, *prev_scbp
;
4353 unsigned char active_hscb
, next_hscb
, prev_hscb
, scb_index
;
4355 * We have to look three places for queued commands:
4356 * 1: p->waiting_scbs queue
4358 * 3: WAITING_SCBS list on card (for commands that are started
4359 * but haven't yet made it to the device)
4361 * Of special note here is that commands on 2 or 3 above will
4362 * have already been marked as active, while commands on 1 will
4363 * not. The aic7xxx_done() function will want to unmark them
4364 * from active, so any commands we pull off of 1 need to
4365 * up the active count.
4367 next_scbp
= p
->waiting_scbs
.head
;
4368 while ( next_scbp
!= NULL
)
4370 prev_scbp
= next_scbp
;
4371 next_scbp
= next_scbp
->q_next
;
4372 if ( aic7xxx_match_scb(p
, prev_scbp
, target
, channel
, lun
,
4375 scbq_remove(&p
->waiting_scbs
, prev_scbp
);
4376 scb
->flags
= SCB_QUEUED_FOR_DONE
| SCB_QUEUE_FULL
;
4378 aic_dev
->active_cmds
++;
4381 aic7xxx_search_qinfifo(p
, target
, channel
, lun
,
4382 SCB_LIST_NULL
, SCB_QUEUED_FOR_DONE
| SCB_QUEUE_FULL
,
4385 active_hscb
= aic_inb(p
, SCBPTR
);
4386 prev_hscb
= next_hscb
= scb_index
= SCB_LIST_NULL
;
4387 next_hscb
= aic_inb(p
, WAITING_SCBH
);
4388 while (next_hscb
!= SCB_LIST_NULL
)
4390 aic_outb(p
, next_hscb
, SCBPTR
);
4391 scb_index
= aic_inb(p
, SCB_TAG
);
4392 if (scb_index
< p
->scb_data
->numscbs
)
4394 next_scbp
= p
->scb_data
->scb_array
[scb_index
];
4395 if (aic7xxx_match_scb(p
, next_scbp
, target
, channel
, lun
,
4398 next_scbp
->flags
= SCB_QUEUED_FOR_DONE
| SCB_QUEUE_FULL
;
4399 next_hscb
= aic_inb(p
, SCB_NEXT
);
4400 aic_outb(p
, 0, SCB_CONTROL
);
4401 aic_outb(p
, SCB_LIST_NULL
, SCB_TAG
);
4402 aic7xxx_add_curscb_to_free_list(p
);
4403 if (prev_hscb
== SCB_LIST_NULL
)
4405 /* We were first on the list,
4406 * so we kill the selection
4407 * hardware. Let the sequencer
4408 * re-init the hardware itself
4410 aic_outb(p
, aic_inb(p
, SCSISEQ
) & ~ENSELO
, SCSISEQ
);
4411 aic_outb(p
, CLRSELTIMEO
, CLRSINT1
);
4412 aic_outb(p
, next_hscb
, WAITING_SCBH
);
4416 aic_outb(p
, prev_hscb
, SCBPTR
);
4417 aic_outb(p
, next_hscb
, SCB_NEXT
);
4422 prev_hscb
= next_hscb
;
4423 next_hscb
= aic_inb(p
, SCB_NEXT
);
4425 } /* scb_index >= p->scb_data->numscbs */
4427 aic_outb(p
, active_hscb
, SCBPTR
);
4428 aic7xxx_run_done_queue(p
, FALSE
);
4430 #ifdef AIC7XXX_VERBOSE_DEBUGGING
4431 if( (aic7xxx_verbose
& VERBOSE_MINOR_ERROR
) ||
4432 (aic7xxx_verbose
> 0xffff) )
4435 printk(INFO_LEAD
"Queue full received; queue depth %d, "
4436 "active %d\n", p
->host_no
, CTL_OF_SCB(scb
),
4437 aic_dev
->max_q_depth
, aic_dev
->active_cmds
);
4439 printk(INFO_LEAD
"Target busy\n", p
->host_no
, CTL_OF_SCB(scb
));
4445 result
= scsi_track_queue_full(cmd
->device
,
4446 aic_dev
->active_cmds
);
4449 if (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
4450 printk(INFO_LEAD
"Tagged Command Queueing disabled.\n",
4451 p
->host_no
, CTL_OF_SCB(scb
));
4452 diff
= aic_dev
->max_q_depth
- p
->host
->cmd_per_lun
;
4453 aic_dev
->temp_q_depth
= 1;
4454 aic_dev
->max_q_depth
= 1;
4456 else if ( result
> 0 )
4458 if (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
4459 printk(INFO_LEAD
"Queue depth reduced to %d\n", p
->host_no
,
4460 CTL_OF_SCB(scb
), result
);
4461 diff
= aic_dev
->max_q_depth
- result
;
4462 aic_dev
->max_q_depth
= result
;
4463 /* temp_q_depth could have been dropped to 1 for an untagged
4464 * command that might be coming up */
4465 if(aic_dev
->temp_q_depth
> result
)
4466 aic_dev
->temp_q_depth
= result
;
4468 /* We should free up the no unused SCB entries. But, that's
4469 * a difficult thing to do because we use a direct indexed
4470 * array, so we can't just take any entries and free them,
4471 * we *have* to free the ones at the end of the array, and
4472 * they very well could be in use right now, which means
4473 * in order to do this right, we have to add a delayed
4474 * freeing mechanism tied into the scb_free() code area.
4475 * We'll add that later.
4482 if (aic7xxx_verbose
& VERBOSE_SEQINT
)
4483 printk(INFO_LEAD
"Unexpected target status 0x%x.\n", p
->host_no
,
4484 CTL_OF_SCB(scb
), scb
->hscb
->target_status
);
4485 if (!aic7xxx_error(cmd
))
4487 aic7xxx_error(cmd
) = DID_RETRY_COMMAND
;
4497 unsigned char scb_index
, msg_out
;
4499 scb_index
= aic_inb(p
, SCB_TAG
);
4500 msg_out
= aic_inb(p
, MSG_OUT
);
4501 scb
= p
->scb_data
->scb_array
[scb_index
];
4502 aic_dev
= AIC_DEV(scb
->cmd
);
4503 p
->msg_index
= p
->msg_len
= 0;
4505 * This SCB had a MK_MESSAGE set in its control byte informing
4506 * the sequencer that we wanted to send a special message to
4510 if ( !(scb
->flags
& SCB_DEVICE_RESET
) &&
4511 (msg_out
== MSG_IDENTIFYFLAG
) &&
4512 (scb
->hscb
->control
& TAG_ENB
) )
4514 p
->msg_buf
[p
->msg_index
++] = scb
->tag_action
;
4515 p
->msg_buf
[p
->msg_index
++] = scb
->hscb
->tag
;
4519 if (scb
->flags
& SCB_DEVICE_RESET
)
4521 p
->msg_buf
[p
->msg_index
++] = MSG_BUS_DEV_RESET
;
4523 if (aic7xxx_verbose
& VERBOSE_RESET_PROCESS
)
4524 printk(INFO_LEAD
"Bus device reset mailed.\n",
4525 p
->host_no
, CTL_OF_SCB(scb
));
4527 else if (scb
->flags
& SCB_ABORT
)
4529 if (scb
->tag_action
)
4531 p
->msg_buf
[p
->msg_index
++] = MSG_ABORT_TAG
;
4535 p
->msg_buf
[p
->msg_index
++] = MSG_ABORT
;
4538 if (aic7xxx_verbose
& VERBOSE_ABORT_PROCESS
)
4539 printk(INFO_LEAD
"Abort message mailed.\n", p
->host_no
,
4542 else if (scb
->flags
& SCB_MSGOUT_PPR
)
4544 if (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
4546 printk(INFO_LEAD
"Sending PPR (%d/%d/%d/%d) message.\n",
4547 p
->host_no
, CTL_OF_SCB(scb
),
4548 aic_dev
->goal
.period
,
4549 aic_dev
->goal
.offset
,
4550 aic_dev
->goal
.width
,
4551 aic_dev
->goal
.options
);
4553 aic7xxx_construct_ppr(p
, scb
);
4555 else if (scb
->flags
& SCB_MSGOUT_WDTR
)
4557 if (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
4559 printk(INFO_LEAD
"Sending WDTR message.\n", p
->host_no
,
4562 aic7xxx_construct_wdtr(p
, aic_dev
->goal
.width
);
4564 else if (scb
->flags
& SCB_MSGOUT_SDTR
)
4566 unsigned int max_sync
, period
;
4567 unsigned char options
= 0;
4569 * Now that the device is selected, use the bits in SBLKCTL and
4570 * SSTAT2 to determine the max sync rate for this device.
4572 if (p
->features
& AHC_ULTRA2
)
4574 if ( (aic_inb(p
, SBLKCTL
) & ENAB40
) &&
4575 !(aic_inb(p
, SSTAT2
) & EXP_ACTIVE
) )
4577 max_sync
= AHC_SYNCRATE_ULTRA2
;
4581 max_sync
= AHC_SYNCRATE_ULTRA
;
4584 else if (p
->features
& AHC_ULTRA
)
4586 max_sync
= AHC_SYNCRATE_ULTRA
;
4590 max_sync
= AHC_SYNCRATE_FAST
;
4592 period
= aic_dev
->goal
.period
;
4593 aic7xxx_find_syncrate(p
, &period
, max_sync
, &options
);
4594 if (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
4596 printk(INFO_LEAD
"Sending SDTR %d/%d message.\n", p
->host_no
,
4597 CTL_OF_SCB(scb
), period
,
4598 aic_dev
->goal
.offset
);
4600 aic7xxx_construct_sdtr(p
, period
, aic_dev
->goal
.offset
);
4604 panic("aic7xxx: AWAITING_MSG for an SCB that does "
4605 "not have a waiting message.\n");
4608 * We've set everything up to send our message, now to actually do
4609 * so we need to enable reqinit interrupts and let the interrupt
4610 * handler do the rest. We don't want to unpause the sequencer yet
4611 * though so we'll return early. We also have to make sure that
4612 * we clear the SEQINT *BEFORE* we set the REQINIT handler active
4613 * or else it's possible on VLB cards to lose the first REQINIT
4614 * interrupt. Edge triggered EISA cards could also lose this
4615 * interrupt, although PCI and level triggered cards should not
4616 * have this problem since they continually interrupt the kernel
4617 * until we take care of the situation.
4619 scb
->flags
|= SCB_MSGOUT_SENT
;
4621 p
->msg_type
= MSG_TYPE_INITIATOR_MSGOUT
;
4622 p
->flags
|= AHC_HANDLING_REQINITS
;
4623 aic_outb(p
, aic_inb(p
, SIMODE1
) | ENREQINIT
, SIMODE1
);
4630 unsigned char scb_index
= aic_inb(p
, SCB_TAG
);
4631 unsigned char lastphase
= aic_inb(p
, LASTPHASE
);
4634 scb
= (p
->scb_data
->scb_array
[scb_index
]);
4636 * XXX - What do we really want to do on an overrun? The
4637 * mid-level SCSI code should handle this, but for now,
4638 * we'll just indicate that the command should retried.
4639 * If we retrieved sense info on this target, then the
4640 * base SENSE info should have been saved prior to the
4641 * overrun error. In that case, we return DID_OK and let
4642 * the mid level code pick up on the sense info. Otherwise
4643 * we return DID_ERROR so the command will get retried.
4645 if ( !(scb
->flags
& SCB_SENSE
) )
4647 printk(WARN_LEAD
"Data overrun detected in %s phase, tag %d;\n",
4648 p
->host_no
, CTL_OF_SCB(scb
),
4649 (lastphase
== P_DATAIN
) ? "Data-In" : "Data-Out", scb
->hscb
->tag
);
4650 printk(KERN_WARNING
" %s seen Data Phase. Length=%d, NumSGs=%d.\n",
4651 (aic_inb(p
, SEQ_FLAGS
) & DPHASE
) ? "Have" : "Haven't",
4652 scb
->sg_length
, scb
->sg_count
);
4653 printk(KERN_WARNING
" Raw SCSI Command: 0x");
4654 for (i
= 0; i
< scb
->hscb
->SCSI_cmd_length
; i
++)
4656 printk("%02x ", scb
->cmd
->cmnd
[i
]);
4659 if(aic7xxx_verbose
> 0xffff)
4661 for (i
= 0; i
< scb
->sg_count
; i
++)
4663 printk(KERN_WARNING
" sg[%d] - Addr 0x%x : Length %d\n",
4665 le32_to_cpu(scb
->sg_list
[i
].address
),
4666 le32_to_cpu(scb
->sg_list
[i
].length
) );
4669 aic7xxx_error(scb
->cmd
) = DID_ERROR
;
4672 printk(INFO_LEAD
"Data Overrun during SEND_SENSE operation.\n",
4673 p
->host_no
, CTL_OF_SCB(scb
));
4679 unsigned char resid_sgcnt
, index
;
4680 unsigned char scb_index
= aic_inb(p
, SCB_TAG
);
4681 unsigned int cur_addr
, resid_dcnt
;
4682 unsigned int native_addr
, native_length
, sg_addr
;
4685 if(scb_index
> p
->scb_data
->numscbs
)
4687 printk(WARN_LEAD
"invalid scb_index during WIDE_RESIDUE.\n",
4688 p
->host_no
, -1, -1, -1);
4690 * XXX: Add error handling here
4694 scb
= p
->scb_data
->scb_array
[scb_index
];
4695 if(!(scb
->flags
& SCB_ACTIVE
) || (scb
->cmd
== NULL
))
4697 printk(WARN_LEAD
"invalid scb during WIDE_RESIDUE flags:0x%x "
4698 "scb->cmd:0x%lx\n", p
->host_no
, CTL_OF_SCB(scb
),
4699 scb
->flags
, (unsigned long)scb
->cmd
);
4702 if(aic7xxx_verbose
& VERBOSE_MINOR_ERROR
)
4703 printk(INFO_LEAD
"Got WIDE_RESIDUE message, patching up data "
4704 "pointer.\n", p
->host_no
, CTL_OF_SCB(scb
));
4707 * We have a valid scb to use on this WIDE_RESIDUE message, so
4708 * we need to walk the sg list looking for this particular sg
4709 * segment, then see if we happen to be at the very beginning of
4710 * the segment. If we are, then we have to back things up to
4711 * the previous segment. If not, then we simply need to remove
4712 * one byte from this segments address and add one to the byte
4715 cur_addr
= aic_inb(p
, SHADDR
) | (aic_inb(p
, SHADDR
+ 1) << 8) |
4716 (aic_inb(p
, SHADDR
+ 2) << 16) | (aic_inb(p
, SHADDR
+ 3) << 24);
4717 sg_addr
= aic_inb(p
, SG_COUNT
+ 1) | (aic_inb(p
, SG_COUNT
+ 2) << 8) |
4718 (aic_inb(p
, SG_COUNT
+ 3) << 16) | (aic_inb(p
, SG_COUNT
+ 4) << 24);
4719 resid_sgcnt
= aic_inb(p
, SCB_RESID_SGCNT
);
4720 resid_dcnt
= aic_inb(p
, SCB_RESID_DCNT
) |
4721 (aic_inb(p
, SCB_RESID_DCNT
+ 1) << 8) |
4722 (aic_inb(p
, SCB_RESID_DCNT
+ 2) << 16);
4723 index
= scb
->sg_count
- ((resid_sgcnt
) ? resid_sgcnt
: 1);
4724 native_addr
= le32_to_cpu(scb
->sg_list
[index
].address
);
4725 native_length
= le32_to_cpu(scb
->sg_list
[index
].length
);
4727 * If resid_dcnt == native_length, then we just loaded this SG
4728 * segment and we need to back it up one...
4730 if(resid_dcnt
== native_length
)
4735 * Oops, this isn't right, we can't back up to before the
4736 * beginning. This must be a bogus message, ignore it.
4742 native_addr
= le32_to_cpu(scb
->sg_list
[index
- 1].address
);
4743 native_length
= le32_to_cpu(scb
->sg_list
[index
- 1].length
);
4744 cur_addr
= native_addr
+ (native_length
- 1);
4745 sg_addr
-= sizeof(struct hw_scatterlist
);
4750 * resid_dcnt != native_length, so we are in the middle of a SG
4751 * element. Back it up one byte and leave the rest alone.
4758 * Output the new addresses and counts to the right places on the
4761 aic_outb(p
, resid_sgcnt
, SG_COUNT
);
4762 aic_outb(p
, resid_sgcnt
, SCB_RESID_SGCNT
);
4763 aic_outb(p
, sg_addr
& 0xff, SG_COUNT
+ 1);
4764 aic_outb(p
, (sg_addr
>> 8) & 0xff, SG_COUNT
+ 2);
4765 aic_outb(p
, (sg_addr
>> 16) & 0xff, SG_COUNT
+ 3);
4766 aic_outb(p
, (sg_addr
>> 24) & 0xff, SG_COUNT
+ 4);
4767 aic_outb(p
, resid_dcnt
& 0xff, SCB_RESID_DCNT
);
4768 aic_outb(p
, (resid_dcnt
>> 8) & 0xff, SCB_RESID_DCNT
+ 1);
4769 aic_outb(p
, (resid_dcnt
>> 16) & 0xff, SCB_RESID_DCNT
+ 2);
4772 * The sequencer actually wants to find the new address
4773 * in the SHADDR register set. On the Ultra2 and later controllers
4774 * this register set is readonly. In order to get the right number
4775 * into the register, you actually have to enter it in HADDR and then
4776 * use the PRELOADEN bit of DFCNTRL to drop it through from the
4777 * HADDR register to the SHADDR register. On non-Ultra2 controllers,
4778 * we simply write it direct.
4780 if(p
->features
& AHC_ULTRA2
)
4783 * We might as well be accurate and drop both the resid_dcnt and
4784 * cur_addr into HCNT and HADDR and have both of them drop
4785 * through to the shadow layer together.
4787 aic_outb(p
, resid_dcnt
& 0xff, HCNT
);
4788 aic_outb(p
, (resid_dcnt
>> 8) & 0xff, HCNT
+ 1);
4789 aic_outb(p
, (resid_dcnt
>> 16) & 0xff, HCNT
+ 2);
4790 aic_outb(p
, cur_addr
& 0xff, HADDR
);
4791 aic_outb(p
, (cur_addr
>> 8) & 0xff, HADDR
+ 1);
4792 aic_outb(p
, (cur_addr
>> 16) & 0xff, HADDR
+ 2);
4793 aic_outb(p
, (cur_addr
>> 24) & 0xff, HADDR
+ 3);
4794 aic_outb(p
, aic_inb(p
, DMAPARAMS
) | PRELOADEN
, DFCNTRL
);
4796 aic_outb(p
, aic_inb(p
, DMAPARAMS
) & ~(SCSIEN
|HDMAEN
), DFCNTRL
);
4798 while(((aic_inb(p
, DFCNTRL
) & (SCSIEN
|HDMAEN
)) != 0) && (i
++ < 1000))
4805 aic_outb(p
, cur_addr
& 0xff, SHADDR
);
4806 aic_outb(p
, (cur_addr
>> 8) & 0xff, SHADDR
+ 1);
4807 aic_outb(p
, (cur_addr
>> 16) & 0xff, SHADDR
+ 2);
4808 aic_outb(p
, (cur_addr
>> 24) & 0xff, SHADDR
+ 3);
4815 unsigned char scb_index
, tmp
;
4816 int sg_addr
, sg_length
;
4818 scb_index
= aic_inb(p
, SCB_TAG
);
4820 if(scb_index
> p
->scb_data
->numscbs
)
4822 printk(WARN_LEAD
"invalid scb_index during SEQ_SG_FIXUP.\n",
4823 p
->host_no
, -1, -1, -1);
4824 printk(INFO_LEAD
"SCSISIGI 0x%x, SEQADDR 0x%x, SSTAT0 0x%x, SSTAT1 "
4825 "0x%x\n", p
->host_no
, -1, -1, -1,
4826 aic_inb(p
, SCSISIGI
),
4827 aic_inb(p
, SEQADDR0
) | (aic_inb(p
, SEQADDR1
) << 8),
4828 aic_inb(p
, SSTAT0
), aic_inb(p
, SSTAT1
));
4829 printk(INFO_LEAD
"SG_CACHEPTR 0x%x, SSTAT2 0x%x, STCNT 0x%x\n",
4830 p
->host_no
, -1, -1, -1, aic_inb(p
, SG_CACHEPTR
),
4831 aic_inb(p
, SSTAT2
), aic_inb(p
, STCNT
+ 2) << 16 |
4832 aic_inb(p
, STCNT
+ 1) << 8 | aic_inb(p
, STCNT
));
4834 * XXX: Add error handling here
4838 scb
= p
->scb_data
->scb_array
[scb_index
];
4839 if(!(scb
->flags
& SCB_ACTIVE
) || (scb
->cmd
== NULL
))
4841 printk(WARN_LEAD
"invalid scb during SEQ_SG_FIXUP flags:0x%x "
4842 "scb->cmd:0x%p\n", p
->host_no
, CTL_OF_SCB(scb
),
4843 scb
->flags
, scb
->cmd
);
4844 printk(INFO_LEAD
"SCSISIGI 0x%x, SEQADDR 0x%x, SSTAT0 0x%x, SSTAT1 "
4845 "0x%x\n", p
->host_no
, CTL_OF_SCB(scb
),
4846 aic_inb(p
, SCSISIGI
),
4847 aic_inb(p
, SEQADDR0
) | (aic_inb(p
, SEQADDR1
) << 8),
4848 aic_inb(p
, SSTAT0
), aic_inb(p
, SSTAT1
));
4849 printk(INFO_LEAD
"SG_CACHEPTR 0x%x, SSTAT2 0x%x, STCNT 0x%x\n",
4850 p
->host_no
, CTL_OF_SCB(scb
), aic_inb(p
, SG_CACHEPTR
),
4851 aic_inb(p
, SSTAT2
), aic_inb(p
, STCNT
+ 2) << 16 |
4852 aic_inb(p
, STCNT
+ 1) << 8 | aic_inb(p
, STCNT
));
4855 if(aic7xxx_verbose
& VERBOSE_MINOR_ERROR
)
4856 printk(INFO_LEAD
"Fixing up SG address for sequencer.\n", p
->host_no
,
4859 * Advance the SG pointer to the next element in the list
4861 tmp
= aic_inb(p
, SG_NEXT
);
4863 aic_outb(p
, tmp
, SG_NEXT
);
4864 if( tmp
< SG_SIZEOF
)
4865 aic_outb(p
, aic_inb(p
, SG_NEXT
+ 1) + 1, SG_NEXT
+ 1);
4866 tmp
= aic_inb(p
, SG_COUNT
) - 1;
4867 aic_outb(p
, tmp
, SG_COUNT
);
4868 sg_addr
= le32_to_cpu(scb
->sg_list
[scb
->sg_count
- tmp
].address
);
4869 sg_length
= le32_to_cpu(scb
->sg_list
[scb
->sg_count
- tmp
].length
);
4871 * Now stuff the element we just advanced past down onto the
4872 * card so it can be stored in the residual area.
4874 aic_outb(p
, sg_addr
& 0xff, HADDR
);
4875 aic_outb(p
, (sg_addr
>> 8) & 0xff, HADDR
+ 1);
4876 aic_outb(p
, (sg_addr
>> 16) & 0xff, HADDR
+ 2);
4877 aic_outb(p
, (sg_addr
>> 24) & 0xff, HADDR
+ 3);
4878 aic_outb(p
, sg_length
& 0xff, HCNT
);
4879 aic_outb(p
, (sg_length
>> 8) & 0xff, HCNT
+ 1);
4880 aic_outb(p
, (sg_length
>> 16) & 0xff, HCNT
+ 2);
4881 aic_outb(p
, (tmp
<< 2) | ((tmp
== 1) ? LAST_SEG
: 0), SG_CACHEPTR
);
4882 aic_outb(p
, aic_inb(p
, DMAPARAMS
), DFCNTRL
);
4883 while(aic_inb(p
, SSTAT0
) & SDONE
) udelay(1);
4884 while(aic_inb(p
, DFCNTRL
) & (HDMAEN
|SCSIEN
)) aic_outb(p
, 0, DFCNTRL
);
4891 printk(INFO_LEAD
"Tracepoint #2 reached.\n", p
->host_no
,
4892 channel
, target
, lun
);
4896 /* XXX Fill these in later */
4897 case MSG_BUFFER_BUSY
:
4898 printk("aic7xxx: Message buffer busy.\n");
4900 case MSGIN_PHASEMIS
:
4901 printk("aic7xxx: Message-in phasemis.\n");
4905 default: /* unknown */
4906 printk(WARN_LEAD
"Unknown SEQINT, INTSTAT 0x%x, SCSISIGI 0x%x.\n",
4907 p
->host_no
, channel
, target
, lun
, intstat
,
4908 aic_inb(p
, SCSISIGI
));
4913 * Clear the sequencer interrupt and unpause the sequencer.
4915 unpause_sequencer(p
, /* unpause always */ TRUE
);
4918 /*+F*************************************************************************
4923 * Parses incoming messages into actions on behalf of
4924 * aic7xxx_handle_reqinit
4925 *_F*************************************************************************/
4927 aic7xxx_parse_msg(struct aic7xxx_host
*p
, struct aic7xxx_scb
*scb
)
4929 int reject
, reply
, done
;
4930 unsigned char target_scsirate
, tindex
;
4931 unsigned short target_mask
;
4932 unsigned char target
, channel
, lun
;
4933 unsigned char bus_width
, new_bus_width
;
4934 unsigned char trans_options
, new_trans_options
;
4935 unsigned int period
, new_period
, offset
, new_offset
, maxsync
;
4936 struct aic7xxx_syncrate
*syncrate
;
4937 struct aic_dev_data
*aic_dev
;
4939 target
= scb
->cmd
->device
->id
;
4940 channel
= scb
->cmd
->device
->channel
;
4941 lun
= scb
->cmd
->device
->lun
;
4942 reply
= reject
= done
= FALSE
;
4943 tindex
= TARGET_INDEX(scb
->cmd
);
4944 aic_dev
= AIC_DEV(scb
->cmd
);
4945 target_scsirate
= aic_inb(p
, TARG_SCSIRATE
+ tindex
);
4946 target_mask
= (0x01 << tindex
);
4949 * Parse as much of the message as is available,
4950 * rejecting it if we don't support it. When
4951 * the entire message is available and has been
4952 * handled, return TRUE indicating that we have
4953 * parsed an entire message.
4956 if (p
->msg_buf
[0] != MSG_EXTENDED
)
4962 * Even if we are an Ultra3 card, don't allow Ultra3 sync rates when
4963 * using the SDTR messages. We need the PPR messages to enable the
4964 * higher speeds that include things like Dual Edge clocking.
4966 if (p
->features
& AHC_ULTRA2
)
4968 if ( (aic_inb(p
, SBLKCTL
) & ENAB40
) &&
4969 !(aic_inb(p
, SSTAT2
) & EXP_ACTIVE
) )
4971 if (p
->features
& AHC_ULTRA3
)
4972 maxsync
= AHC_SYNCRATE_ULTRA3
;
4974 maxsync
= AHC_SYNCRATE_ULTRA2
;
4978 maxsync
= AHC_SYNCRATE_ULTRA
;
4981 else if (p
->features
& AHC_ULTRA
)
4983 maxsync
= AHC_SYNCRATE_ULTRA
;
4987 maxsync
= AHC_SYNCRATE_FAST
;
4991 * Just accept the length byte outright and perform
4992 * more checking once we know the message type.
4995 if ( !reject
&& (p
->msg_len
> 2) )
4997 switch(p
->msg_buf
[2])
5002 if (p
->msg_buf
[1] != MSG_EXT_SDTR_LEN
)
5008 if (p
->msg_len
< (MSG_EXT_SDTR_LEN
+ 2))
5013 period
= new_period
= p
->msg_buf
[3];
5014 offset
= new_offset
= p
->msg_buf
[4];
5015 trans_options
= new_trans_options
= 0;
5016 bus_width
= new_bus_width
= target_scsirate
& WIDEXFER
;
5019 * If our current max syncrate is in the Ultra3 range, bump it back
5020 * down to Ultra2 since we can't negotiate DT transfers using SDTR
5022 if(maxsync
== AHC_SYNCRATE_ULTRA3
)
5023 maxsync
= AHC_SYNCRATE_ULTRA2
;
5026 * We might have a device that is starting negotiation with us
5027 * before we can start up negotiation with it....be prepared to
5028 * have a device ask for a higher speed then we want to give it
5031 if ( (scb
->flags
& (SCB_MSGOUT_SENT
|SCB_MSGOUT_SDTR
)) !=
5032 (SCB_MSGOUT_SENT
|SCB_MSGOUT_SDTR
) )
5034 if (!(aic_dev
->flags
& DEVICE_DTR_SCANNED
))
5037 * We shouldn't get here unless this is a narrow drive, wide
5038 * devices should trigger this same section of code in the WDTR
5039 * handler first instead.
5041 aic_dev
->goal
.width
= MSG_EXT_WDTR_BUS_8_BIT
;
5042 aic_dev
->goal
.options
= 0;
5043 if(p
->user
[tindex
].offset
)
5045 aic_dev
->needsdtr_copy
= 1;
5046 aic_dev
->goal
.period
= MAX(10,p
->user
[tindex
].period
);
5047 if(p
->features
& AHC_ULTRA2
)
5049 aic_dev
->goal
.offset
= MAX_OFFSET_ULTRA2
;
5053 aic_dev
->goal
.offset
= MAX_OFFSET_8BIT
;
5058 aic_dev
->needsdtr_copy
= 0;
5059 aic_dev
->goal
.period
= 255;
5060 aic_dev
->goal
.offset
= 0;
5062 aic_dev
->flags
|= DEVICE_DTR_SCANNED
| DEVICE_PRINT_DTR
;
5064 else if (aic_dev
->needsdtr_copy
== 0)
5067 * This is a preemptive message from the target, we've already
5068 * scanned this target and set our options for it, and we
5069 * don't need a SDTR with this target (for whatever reason),
5070 * so reject this incoming SDTR
5076 /* The device is sending this message first and we have to reply */
5079 if (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
5081 printk(INFO_LEAD
"Received pre-emptive SDTR message from "
5082 "target.\n", p
->host_no
, CTL_OF_SCB(scb
));
5085 * Validate the values the device passed to us against our SEEPROM
5086 * settings. We don't have to do this if we aren't replying since
5087 * the device isn't allowed to send values greater than the ones
5088 * we first sent to it.
5090 new_period
= MAX(period
, aic_dev
->goal
.period
);
5091 new_offset
= MIN(offset
, aic_dev
->goal
.offset
);
5095 * Use our new_period, new_offset, bus_width, and card options
5096 * to determine the actual syncrate settings
5098 syncrate
= aic7xxx_find_syncrate(p
, &new_period
, maxsync
,
5100 aic7xxx_validate_offset(p
, syncrate
, &new_offset
, bus_width
);
5103 * Did we drop to async? If so, send a reply regardless of whether
5104 * or not we initiated this negotiation.
5106 if ((new_offset
== 0) && (new_offset
!= offset
))
5108 aic_dev
->needsdtr_copy
= 0;
5113 * Did we start this, if not, or if we went too low and had to
5114 * go async, then send an SDTR back to the target
5118 /* when sending a reply, make sure that the goal settings are
5119 * updated along with current and active since the code that
5120 * will actually build the message for the sequencer uses the
5121 * goal settings as its guidelines.
5123 aic7xxx_set_syncrate(p
, syncrate
, target
, channel
, new_period
,
5124 new_offset
, trans_options
,
5125 AHC_TRANS_GOAL
|AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
,
5127 scb
->flags
&= ~SCB_MSGOUT_BITS
;
5128 scb
->flags
|= SCB_MSGOUT_SDTR
;
5129 aic_outb(p
, HOST_MSG
, MSG_OUT
);
5130 aic_outb(p
, aic_inb(p
, SCSISIGO
) | ATNO
, SCSISIGO
);
5134 aic7xxx_set_syncrate(p
, syncrate
, target
, channel
, new_period
,
5135 new_offset
, trans_options
,
5136 AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
, aic_dev
);
5137 aic_dev
->needsdtr
= 0;
5145 if (p
->msg_buf
[1] != MSG_EXT_WDTR_LEN
)
5151 if (p
->msg_len
< (MSG_EXT_WDTR_LEN
+ 2))
5156 bus_width
= new_bus_width
= p
->msg_buf
[3];
5158 if ( (scb
->flags
& (SCB_MSGOUT_SENT
|SCB_MSGOUT_WDTR
)) ==
5159 (SCB_MSGOUT_SENT
|SCB_MSGOUT_WDTR
) )
5166 if ( (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
) &&
5167 ((aic_dev
->flags
& DEVICE_PRINT_DTR
) ||
5168 (aic7xxx_verbose
> 0xffff)) )
5170 printk(INFO_LEAD
"Requesting %d bit transfers, rejecting.\n",
5171 p
->host_no
, CTL_OF_SCB(scb
), 8 * (0x01 << bus_width
));
5173 } /* We fall through on purpose */
5174 case MSG_EXT_WDTR_BUS_8_BIT
:
5176 aic_dev
->goal
.width
= MSG_EXT_WDTR_BUS_8_BIT
;
5177 aic_dev
->needwdtr_copy
&= ~target_mask
;
5180 case MSG_EXT_WDTR_BUS_16_BIT
:
5185 aic_dev
->needwdtr
= 0;
5186 aic7xxx_set_width(p
, target
, channel
, lun
, new_bus_width
,
5187 AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
, aic_dev
);
5191 if ( !(aic_dev
->flags
& DEVICE_DTR_SCANNED
) )
5194 * Well, we now know the WDTR and SYNC caps of this device since
5195 * it contacted us first, mark it as such and copy the user stuff
5196 * over to the goal stuff.
5198 if( (p
->features
& AHC_WIDE
) && p
->user
[tindex
].width
)
5200 aic_dev
->goal
.width
= MSG_EXT_WDTR_BUS_16_BIT
;
5201 aic_dev
->needwdtr_copy
= 1;
5205 * Devices that support DT transfers don't start WDTR requests
5207 aic_dev
->goal
.options
= 0;
5209 if(p
->user
[tindex
].offset
)
5211 aic_dev
->needsdtr_copy
= 1;
5212 aic_dev
->goal
.period
= MAX(10,p
->user
[tindex
].period
);
5213 if(p
->features
& AHC_ULTRA2
)
5215 aic_dev
->goal
.offset
= MAX_OFFSET_ULTRA2
;
5217 else if( aic_dev
->goal
.width
)
5219 aic_dev
->goal
.offset
= MAX_OFFSET_16BIT
;
5223 aic_dev
->goal
.offset
= MAX_OFFSET_8BIT
;
5226 aic_dev
->needsdtr_copy
= 0;
5227 aic_dev
->goal
.period
= 255;
5228 aic_dev
->goal
.offset
= 0;
5231 aic_dev
->flags
|= DEVICE_DTR_SCANNED
| DEVICE_PRINT_DTR
;
5233 else if (aic_dev
->needwdtr_copy
== 0)
5236 * This is a preemptive message from the target, we've already
5237 * scanned this target and set our options for it, and we
5238 * don't need a WDTR with this target (for whatever reason),
5239 * so reject this incoming WDTR
5245 /* The device is sending this message first and we have to reply */
5248 if (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
5250 printk(INFO_LEAD
"Received pre-emptive WDTR message from "
5251 "target.\n", p
->host_no
, CTL_OF_SCB(scb
));
5255 case MSG_EXT_WDTR_BUS_16_BIT
:
5257 if ( (p
->features
& AHC_WIDE
) &&
5258 (aic_dev
->goal
.width
== MSG_EXT_WDTR_BUS_16_BIT
) )
5260 new_bus_width
= MSG_EXT_WDTR_BUS_16_BIT
;
5263 } /* Fall through if we aren't a wide card */
5265 case MSG_EXT_WDTR_BUS_8_BIT
:
5267 aic_dev
->needwdtr_copy
= 0;
5268 new_bus_width
= MSG_EXT_WDTR_BUS_8_BIT
;
5272 scb
->flags
&= ~SCB_MSGOUT_BITS
;
5273 scb
->flags
|= SCB_MSGOUT_WDTR
;
5274 aic_dev
->needwdtr
= 0;
5275 if(aic_dev
->dtr_pending
== 0)
5277 /* there is no other command with SCB_DTR_SCB already set that will
5278 * trigger the release of the dtr_pending bit. Both set the bit
5279 * and set scb->flags |= SCB_DTR_SCB
5281 aic_dev
->dtr_pending
= 1;
5282 scb
->flags
|= SCB_DTR_SCB
;
5284 aic_outb(p
, HOST_MSG
, MSG_OUT
);
5285 aic_outb(p
, aic_inb(p
, SCSISIGO
) | ATNO
, SCSISIGO
);
5286 /* when sending a reply, make sure that the goal settings are
5287 * updated along with current and active since the code that
5288 * will actually build the message for the sequencer uses the
5289 * goal settings as its guidelines.
5291 aic7xxx_set_width(p
, target
, channel
, lun
, new_bus_width
,
5292 AHC_TRANS_GOAL
|AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
,
5297 * By virtue of the SCSI spec, a WDTR message negates any existing
5298 * SDTR negotiations. So, even if needsdtr isn't marked for this
5299 * device, we still have to do a new SDTR message if the device
5300 * supports SDTR at all. Therefore, we check needsdtr_copy instead
5303 aic7xxx_set_syncrate(p
, NULL
, target
, channel
, 0, 0, 0,
5304 AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
|AHC_TRANS_QUITE
,
5306 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
;
5313 if (p
->msg_buf
[1] != MSG_EXT_PPR_LEN
)
5319 if (p
->msg_len
< (MSG_EXT_PPR_LEN
+ 2))
5324 period
= new_period
= p
->msg_buf
[3];
5325 offset
= new_offset
= p
->msg_buf
[5];
5326 bus_width
= new_bus_width
= p
->msg_buf
[6];
5327 trans_options
= new_trans_options
= p
->msg_buf
[7] & 0xf;
5329 if(aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
5331 printk(INFO_LEAD
"Parsing PPR message (%d/%d/%d/%d)\n",
5332 p
->host_no
, CTL_OF_SCB(scb
), period
, offset
, bus_width
,
5337 * We might have a device that is starting negotiation with us
5338 * before we can start up negotiation with it....be prepared to
5339 * have a device ask for a higher speed then we want to give it
5342 if ( (scb
->flags
& (SCB_MSGOUT_SENT
|SCB_MSGOUT_PPR
)) !=
5343 (SCB_MSGOUT_SENT
|SCB_MSGOUT_PPR
) )
5345 /* Have we scanned the device yet? */
5346 if (!(aic_dev
->flags
& DEVICE_DTR_SCANNED
))
5348 /* The device is electing to use PPR messages, so we will too until
5350 aic_dev
->needppr
= aic_dev
->needppr_copy
= 1;
5351 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
= 0;
5352 aic_dev
->needwdtr
= aic_dev
->needwdtr_copy
= 0;
5354 /* We know the device is SCSI-3 compliant due to PPR */
5355 aic_dev
->flags
|= DEVICE_SCSI_3
;
5358 * Not only is the device starting this up, but it also hasn't
5359 * been scanned yet, so this would likely be our TUR or our
5360 * INQUIRY command at scan time, so we need to use the
5361 * settings from the SEEPROM if they existed. Of course, even
5362 * if we didn't find a SEEPROM, we stuffed default values into
5363 * the user settings anyway, so use those in all cases.
5365 aic_dev
->goal
.width
= p
->user
[tindex
].width
;
5366 if(p
->user
[tindex
].offset
)
5368 aic_dev
->goal
.period
= p
->user
[tindex
].period
;
5369 aic_dev
->goal
.options
= p
->user
[tindex
].options
;
5370 if(p
->features
& AHC_ULTRA2
)
5372 aic_dev
->goal
.offset
= MAX_OFFSET_ULTRA2
;
5374 else if( aic_dev
->goal
.width
&&
5375 (bus_width
== MSG_EXT_WDTR_BUS_16_BIT
) &&
5376 p
->features
& AHC_WIDE
)
5378 aic_dev
->goal
.offset
= MAX_OFFSET_16BIT
;
5382 aic_dev
->goal
.offset
= MAX_OFFSET_8BIT
;
5387 aic_dev
->goal
.period
= 255;
5388 aic_dev
->goal
.offset
= 0;
5389 aic_dev
->goal
.options
= 0;
5391 aic_dev
->flags
|= DEVICE_DTR_SCANNED
| DEVICE_PRINT_DTR
;
5393 else if (aic_dev
->needppr_copy
== 0)
5396 * This is a preemptive message from the target, we've already
5397 * scanned this target and set our options for it, and we
5398 * don't need a PPR with this target (for whatever reason),
5399 * so reject this incoming PPR
5405 /* The device is sending this message first and we have to reply */
5408 if (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
5410 printk(INFO_LEAD
"Received pre-emptive PPR message from "
5411 "target.\n", p
->host_no
, CTL_OF_SCB(scb
));
5418 case MSG_EXT_WDTR_BUS_16_BIT
:
5420 if ( (aic_dev
->goal
.width
== MSG_EXT_WDTR_BUS_16_BIT
) &&
5421 p
->features
& AHC_WIDE
)
5428 if ( (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
) &&
5429 ((aic_dev
->flags
& DEVICE_PRINT_DTR
) ||
5430 (aic7xxx_verbose
> 0xffff)) )
5433 printk(INFO_LEAD
"Requesting %d bit transfers, rejecting.\n",
5434 p
->host_no
, CTL_OF_SCB(scb
), 8 * (0x01 << bus_width
));
5436 } /* We fall through on purpose */
5437 case MSG_EXT_WDTR_BUS_8_BIT
:
5440 * According to the spec, if we aren't wide, we also can't be
5441 * Dual Edge so clear the options byte
5443 new_trans_options
= 0;
5444 new_bus_width
= MSG_EXT_WDTR_BUS_8_BIT
;
5451 /* when sending a reply, make sure that the goal settings are
5452 * updated along with current and active since the code that
5453 * will actually build the message for the sequencer uses the
5454 * goal settings as its guidelines.
5456 aic7xxx_set_width(p
, target
, channel
, lun
, new_bus_width
,
5457 AHC_TRANS_GOAL
|AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
,
5459 syncrate
= aic7xxx_find_syncrate(p
, &new_period
, maxsync
,
5460 &new_trans_options
);
5461 aic7xxx_validate_offset(p
, syncrate
, &new_offset
, new_bus_width
);
5462 aic7xxx_set_syncrate(p
, syncrate
, target
, channel
, new_period
,
5463 new_offset
, new_trans_options
,
5464 AHC_TRANS_GOAL
|AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
,
5469 aic7xxx_set_width(p
, target
, channel
, lun
, new_bus_width
,
5470 AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
, aic_dev
);
5471 syncrate
= aic7xxx_find_syncrate(p
, &new_period
, maxsync
,
5472 &new_trans_options
);
5473 aic7xxx_validate_offset(p
, syncrate
, &new_offset
, new_bus_width
);
5474 aic7xxx_set_syncrate(p
, syncrate
, target
, channel
, new_period
,
5475 new_offset
, new_trans_options
,
5476 AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
, aic_dev
);
5480 * As it turns out, if we don't *have* to have PPR messages, then
5481 * configure ourselves not to use them since that makes some
5482 * external drive chassis work (those chassis can't parse PPR
5483 * messages and they mangle the SCSI bus until you send a WDTR
5484 * and SDTR that they can understand).
5486 if(new_trans_options
== 0)
5488 aic_dev
->needppr
= aic_dev
->needppr_copy
= 0;
5491 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
= 1;
5495 aic_dev
->needwdtr
= aic_dev
->needwdtr_copy
= 1;
5499 if((new_offset
== 0) && (offset
!= 0))
5502 * Oops, the syncrate went to low for this card and we fell off
5503 * to async (should never happen with a device that uses PPR
5504 * messages, but have to be complete)
5511 scb
->flags
&= ~SCB_MSGOUT_BITS
;
5512 scb
->flags
|= SCB_MSGOUT_PPR
;
5513 aic_outb(p
, HOST_MSG
, MSG_OUT
);
5514 aic_outb(p
, aic_inb(p
, SCSISIGO
) | ATNO
, SCSISIGO
);
5518 aic_dev
->needppr
= 0;
5528 } /* end of switch(p->msg_type) */
5529 } /* end of if (!reject && (p->msg_len > 2)) */
5531 if (!reply
&& reject
)
5533 aic_outb(p
, MSG_MESSAGE_REJECT
, MSG_OUT
);
5534 aic_outb(p
, aic_inb(p
, SCSISIGO
) | ATNO
, SCSISIGO
);
5541 /*+F*************************************************************************
5543 * aic7xxx_handle_reqinit
5546 * Interrupt handler for REQINIT interrupts (used to transfer messages to
5547 * and from devices).
5548 *_F*************************************************************************/
5550 aic7xxx_handle_reqinit(struct aic7xxx_host
*p
, struct aic7xxx_scb
*scb
)
5552 unsigned char lastbyte
;
5553 unsigned char phasemis
;
5558 case MSG_TYPE_INITIATOR_MSGOUT
:
5560 if (p
->msg_len
== 0)
5561 panic("aic7xxx: REQINIT with no active message!\n");
5563 lastbyte
= (p
->msg_index
== (p
->msg_len
- 1));
5564 phasemis
= ( aic_inb(p
, SCSISIGI
) & PHASE_MASK
) != P_MESGOUT
;
5566 if (lastbyte
|| phasemis
)
5568 /* Time to end the message */
5570 p
->msg_type
= MSG_TYPE_NONE
;
5572 * NOTE-TO-MYSELF: If you clear the REQINIT after you
5573 * disable REQINITs, then cases of REJECT_MSG stop working
5576 aic_outb(p
, aic_inb(p
, SIMODE1
) & ~ENREQINIT
, SIMODE1
);
5577 aic_outb(p
, CLRSCSIINT
, CLRINT
);
5578 p
->flags
&= ~AHC_HANDLING_REQINITS
;
5582 aic_outb(p
, p
->msg_buf
[p
->msg_index
], SINDEX
);
5583 aic_outb(p
, 0, RETURN_1
);
5584 #ifdef AIC7XXX_VERBOSE_DEBUGGING
5585 if (aic7xxx_verbose
> 0xffff)
5586 printk(INFO_LEAD
"Completed sending of REQINIT message.\n",
5587 p
->host_no
, CTL_OF_SCB(scb
));
5592 aic_outb(p
, MSGOUT_PHASEMIS
, RETURN_1
);
5593 #ifdef AIC7XXX_VERBOSE_DEBUGGING
5594 if (aic7xxx_verbose
> 0xffff)
5595 printk(INFO_LEAD
"PHASEMIS while sending REQINIT message.\n",
5596 p
->host_no
, CTL_OF_SCB(scb
));
5599 unpause_sequencer(p
, TRUE
);
5604 * Present the byte on the bus (clearing REQINIT) but don't
5605 * unpause the sequencer.
5607 aic_outb(p
, CLRREQINIT
, CLRSINT1
);
5608 aic_outb(p
, CLRSCSIINT
, CLRINT
);
5609 aic_outb(p
, p
->msg_buf
[p
->msg_index
++], SCSIDATL
);
5613 case MSG_TYPE_INITIATOR_MSGIN
:
5615 phasemis
= ( aic_inb(p
, SCSISIGI
) & PHASE_MASK
) != P_MESGIN
;
5620 /* Pull the byte in without acking it */
5621 p
->msg_buf
[p
->msg_index
] = aic_inb(p
, SCSIBUSL
);
5622 done
= aic7xxx_parse_msg(p
, scb
);
5624 aic_outb(p
, CLRREQINIT
, CLRSINT1
);
5625 aic_outb(p
, CLRSCSIINT
, CLRINT
);
5626 aic_inb(p
, SCSIDATL
);
5629 if (phasemis
|| done
)
5631 #ifdef AIC7XXX_VERBOSE_DEBUGGING
5632 if (aic7xxx_verbose
> 0xffff)
5635 printk(INFO_LEAD
"PHASEMIS while receiving REQINIT message.\n",
5636 p
->host_no
, CTL_OF_SCB(scb
));
5638 printk(INFO_LEAD
"Completed receipt of REQINIT message.\n",
5639 p
->host_no
, CTL_OF_SCB(scb
));
5642 /* Time to end our message session */
5644 p
->msg_type
= MSG_TYPE_NONE
;
5645 aic_outb(p
, aic_inb(p
, SIMODE1
) & ~ENREQINIT
, SIMODE1
);
5646 aic_outb(p
, CLRSCSIINT
, CLRINT
);
5647 p
->flags
&= ~AHC_HANDLING_REQINITS
;
5648 unpause_sequencer(p
, TRUE
);
5654 panic("aic7xxx: Unknown REQINIT message type.\n");
5657 } /* End of switch(p->msg_type) */
5660 /*+F*************************************************************************
5662 * aic7xxx_handle_scsiint
5665 * Interrupt handler for SCSI interrupts (SCSIINT).
5666 *-F*************************************************************************/
5668 aic7xxx_handle_scsiint(struct aic7xxx_host
*p
, unsigned char intstat
)
5670 unsigned char scb_index
;
5671 unsigned char status
;
5672 struct aic7xxx_scb
*scb
;
5673 struct aic_dev_data
*aic_dev
;
5675 scb_index
= aic_inb(p
, SCB_TAG
);
5676 status
= aic_inb(p
, SSTAT1
);
5678 if (scb_index
< p
->scb_data
->numscbs
)
5680 scb
= p
->scb_data
->scb_array
[scb_index
];
5681 if ((scb
->flags
& SCB_ACTIVE
) == 0)
5692 if ((status
& SCSIRSTI
) != 0)
5696 if ( (p
->chip
& AHC_CHIPID_MASK
) == AHC_AIC7770
)
5697 channel
= (aic_inb(p
, SBLKCTL
) & SELBUSB
) >> 3;
5701 if (aic7xxx_verbose
& VERBOSE_RESET
)
5702 printk(WARN_LEAD
"Someone else reset the channel!!\n",
5703 p
->host_no
, channel
, -1, -1);
5704 if (aic7xxx_panic_on_abort
)
5705 aic7xxx_panic_abort(p
, NULL
);
5707 * Go through and abort all commands for the channel, but do not
5708 * reset the channel again.
5710 aic7xxx_reset_channel(p
, channel
, /* Initiate Reset */ FALSE
);
5711 aic7xxx_run_done_queue(p
, TRUE
);
5714 else if ( ((status
& BUSFREE
) != 0) && ((status
& SELTO
) == 0) )
5717 * First look at what phase we were last in. If it's message-out,
5718 * chances are pretty good that the bus free was in response to
5719 * one of our abort requests.
5721 unsigned char lastphase
= aic_inb(p
, LASTPHASE
);
5722 unsigned char saved_tcl
= aic_inb(p
, SAVED_TCL
);
5723 unsigned char target
= (saved_tcl
>> 4) & 0x0F;
5725 int printerror
= TRUE
;
5727 if ( (p
->chip
& AHC_CHIPID_MASK
) == AHC_AIC7770
)
5728 channel
= (aic_inb(p
, SBLKCTL
) & SELBUSB
) >> 3;
5732 aic_outb(p
, aic_inb(p
, SCSISEQ
) & (ENSELI
|ENRSELI
|ENAUTOATNP
),
5734 if (lastphase
== P_MESGOUT
)
5736 unsigned char message
;
5738 message
= aic_inb(p
, SINDEX
);
5740 if ((message
== MSG_ABORT
) || (message
== MSG_ABORT_TAG
))
5742 if (aic7xxx_verbose
& VERBOSE_ABORT_PROCESS
)
5743 printk(INFO_LEAD
"SCB %d abort delivered.\n", p
->host_no
,
5744 CTL_OF_SCB(scb
), scb
->hscb
->tag
);
5745 aic7xxx_reset_device(p
, target
, channel
, ALL_LUNS
,
5746 (message
== MSG_ABORT
) ? SCB_LIST_NULL
: scb
->hscb
->tag
);
5747 aic7xxx_run_done_queue(p
, TRUE
);
5751 else if (message
== MSG_BUS_DEV_RESET
)
5753 aic7xxx_handle_device_reset(p
, target
, channel
);
5758 if ( (scb
!= NULL
) && (scb
->flags
& SCB_DTR_SCB
) )
5761 * Hmmm...error during a negotiation command. Either we have a
5762 * borken bus, or the device doesn't like our negotiation message.
5763 * Since we check the INQUIRY data of a device before sending it
5764 * negotiation messages, assume the bus is borken for whatever
5765 * reason. Complete the command.
5768 aic7xxx_reset_device(p
, target
, channel
, ALL_LUNS
, scb
->hscb
->tag
);
5769 aic7xxx_run_done_queue(p
, TRUE
);
5772 if (printerror
!= 0)
5778 if ((scb
->hscb
->control
& TAG_ENB
) != 0)
5780 tag
= scb
->hscb
->tag
;
5784 tag
= SCB_LIST_NULL
;
5786 aic7xxx_reset_device(p
, target
, channel
, ALL_LUNS
, tag
);
5787 aic7xxx_run_done_queue(p
, TRUE
);
5791 aic7xxx_reset_device(p
, target
, channel
, ALL_LUNS
, SCB_LIST_NULL
);
5792 aic7xxx_run_done_queue(p
, TRUE
);
5794 printk(INFO_LEAD
"Unexpected busfree, LASTPHASE = 0x%x, "
5795 "SEQADDR = 0x%x\n", p
->host_no
, channel
, target
, -1, lastphase
,
5796 (aic_inb(p
, SEQADDR1
) << 8) | aic_inb(p
, SEQADDR0
));
5799 aic_outb(p
, MSG_NOOP
, MSG_OUT
);
5800 aic_outb(p
, aic_inb(p
, SIMODE1
) & ~(ENBUSFREE
|ENREQINIT
),
5802 p
->flags
&= ~AHC_HANDLING_REQINITS
;
5803 aic_outb(p
, CLRBUSFREE
, CLRSINT1
);
5804 aic_outb(p
, CLRSCSIINT
, CLRINT
);
5805 restart_sequencer(p
);
5806 unpause_sequencer(p
, TRUE
);
5808 else if ((status
& SELTO
) != 0)
5810 unsigned char scbptr
;
5811 unsigned char nextscb
;
5814 scbptr
= aic_inb(p
, WAITING_SCBH
);
5815 if (scbptr
> p
->scb_data
->maxhscbs
)
5818 * I'm still trying to track down exactly how this happens, but until
5819 * I find it, this code will make sure we aren't passing bogus values
5820 * into the SCBPTR register, even if that register will just wrap
5821 * things around, we still don't like having out of range variables.
5823 * NOTE: Don't check the aic7xxx_verbose variable, I want this message
5824 * to always be displayed.
5826 printk(INFO_LEAD
"Invalid WAITING_SCBH value %d, improvising.\n",
5827 p
->host_no
, -1, -1, -1, scbptr
);
5828 if (p
->scb_data
->maxhscbs
> 4)
5829 scbptr
&= (p
->scb_data
->maxhscbs
- 1);
5833 aic_outb(p
, scbptr
, SCBPTR
);
5834 scb_index
= aic_inb(p
, SCB_TAG
);
5837 if (scb_index
< p
->scb_data
->numscbs
)
5839 scb
= p
->scb_data
->scb_array
[scb_index
];
5840 if ((scb
->flags
& SCB_ACTIVE
) == 0)
5847 printk(WARN_LEAD
"Referenced SCB %d not valid during SELTO.\n",
5848 p
->host_no
, -1, -1, -1, scb_index
);
5849 printk(KERN_WARNING
" SCSISEQ = 0x%x SEQADDR = 0x%x SSTAT0 = 0x%x "
5850 "SSTAT1 = 0x%x\n", aic_inb(p
, SCSISEQ
),
5851 aic_inb(p
, SEQADDR0
) | (aic_inb(p
, SEQADDR1
) << 8),
5852 aic_inb(p
, SSTAT0
), aic_inb(p
, SSTAT1
));
5853 if (aic7xxx_panic_on_abort
)
5854 aic7xxx_panic_abort(p
, NULL
);
5859 cmd
->result
= (DID_TIME_OUT
<< 16);
5862 * Clear out this hardware SCB
5864 aic_outb(p
, 0, SCB_CONTROL
);
5867 * Clear out a few values in the card that are in an undetermined
5870 aic_outb(p
, MSG_NOOP
, MSG_OUT
);
5873 * Shift the waiting for selection queue forward
5875 nextscb
= aic_inb(p
, SCB_NEXT
);
5876 aic_outb(p
, nextscb
, WAITING_SCBH
);
5879 * Put this SCB back on the free list.
5881 aic7xxx_add_curscb_to_free_list(p
);
5882 #ifdef AIC7XXX_VERBOSE_DEBUGGING
5883 if (aic7xxx_verbose
> 0xffff)
5884 printk(INFO_LEAD
"Selection Timeout.\n", p
->host_no
, CTL_OF_SCB(scb
));
5886 if (scb
->flags
& SCB_QUEUED_ABORT
)
5889 * We know that this particular SCB had to be the queued abort since
5890 * the disconnected SCB would have gotten a reconnect instead.
5891 * What we need to do then is to let the command timeout again so
5892 * we get a reset since this abort just failed.
5899 * Keep the sequencer from trying to restart any selections
5901 aic_outb(p
, aic_inb(p
, SCSISEQ
) & ~ENSELO
, SCSISEQ
);
5903 * Make sure the data bits on the bus are released
5904 * Don't do this on 7770 chipsets, it makes them give us
5905 * a BRKADDRINT and kills the card.
5907 if( (p
->chip
& ~AHC_CHIPID_MASK
) == AHC_PCI
)
5908 aic_outb(p
, 0, SCSIBUSL
);
5911 * Delay for the selection timeout delay period then stop the selection
5914 aic_outb(p
, CLRSELINGO
, CLRSINT0
);
5916 * Clear out all the interrupt status bits
5918 aic_outb(p
, aic_inb(p
, SIMODE1
) & ~(ENREQINIT
|ENBUSFREE
), SIMODE1
);
5919 p
->flags
&= ~AHC_HANDLING_REQINITS
;
5920 aic_outb(p
, CLRSELTIMEO
| CLRBUSFREE
, CLRSINT1
);
5921 aic_outb(p
, CLRSCSIINT
, CLRINT
);
5923 * Restarting the sequencer will stop the selection and make sure devices
5924 * are allowed to reselect in.
5926 restart_sequencer(p
);
5927 unpause_sequencer(p
, TRUE
);
5929 else if (scb
== NULL
)
5931 printk(WARN_LEAD
"aic7xxx_isr - referenced scb not valid "
5932 "during scsiint 0x%x scb(%d)\n"
5933 " SIMODE0 0x%x, SIMODE1 0x%x, SSTAT0 0x%x, SEQADDR 0x%x\n",
5934 p
->host_no
, -1, -1, -1, status
, scb_index
, aic_inb(p
, SIMODE0
),
5935 aic_inb(p
, SIMODE1
), aic_inb(p
, SSTAT0
),
5936 (aic_inb(p
, SEQADDR1
) << 8) | aic_inb(p
, SEQADDR0
));
5938 * Turn off the interrupt and set status to zero, so that it
5939 * falls through the rest of the SCSIINT code.
5941 aic_outb(p
, status
, CLRSINT1
);
5942 aic_outb(p
, CLRSCSIINT
, CLRINT
);
5943 unpause_sequencer(p
, /* unpause always */ TRUE
);
5946 else if (status
& SCSIPERR
)
5949 * Determine the bus phase and queue an appropriate message.
5953 unsigned char mesg_out
= MSG_NOOP
;
5954 unsigned char lastphase
= aic_inb(p
, LASTPHASE
);
5955 unsigned char sstat2
= aic_inb(p
, SSTAT2
);
5965 mesg_out
= MSG_INITIATOR_DET_ERR
;
5971 phase
= "Message-Out";
5975 mesg_out
= MSG_INITIATOR_DET_ERR
;
5978 phase
= "Message-In";
5979 mesg_out
= MSG_PARITY_ERROR
;
5987 * A parity error has occurred during a data
5988 * transfer phase. Flag it and continue.
5990 if( (p
->features
& AHC_ULTRA3
) &&
5991 (aic_inb(p
, SCSIRATE
) & AHC_SYNCRATE_CRC
) &&
5992 (lastphase
== P_DATAIN
) )
5994 printk(WARN_LEAD
"CRC error during %s phase.\n",
5995 p
->host_no
, CTL_OF_SCB(scb
), phase
);
5996 if(sstat2
& CRCVALERR
)
5998 printk(WARN_LEAD
" CRC error in intermediate CRC packet.\n",
5999 p
->host_no
, CTL_OF_SCB(scb
));
6001 if(sstat2
& CRCENDERR
)
6003 printk(WARN_LEAD
" CRC error in ending CRC packet.\n",
6004 p
->host_no
, CTL_OF_SCB(scb
));
6006 if(sstat2
& CRCREQERR
)
6008 printk(WARN_LEAD
" Target incorrectly requested a CRC packet.\n",
6009 p
->host_no
, CTL_OF_SCB(scb
));
6011 if(sstat2
& DUAL_EDGE_ERROR
)
6013 printk(WARN_LEAD
" Dual Edge transmission error.\n",
6014 p
->host_no
, CTL_OF_SCB(scb
));
6017 else if( (lastphase
== P_MESGOUT
) &&
6018 (scb
->flags
& SCB_MSGOUT_PPR
) )
6021 * As per the draft specs, any device capable of supporting any of
6022 * the option values other than 0 are not allowed to reject the
6023 * PPR message. Instead, they must negotiate out what they do
6024 * support instead of rejecting our offering or else they cause
6025 * a parity error during msg_out phase to signal that they don't
6026 * like our settings.
6028 aic_dev
= AIC_DEV(scb
->cmd
);
6029 aic_dev
->needppr
= aic_dev
->needppr_copy
= 0;
6030 aic7xxx_set_width(p
, scb
->cmd
->device
->id
, scb
->cmd
->device
->channel
, scb
->cmd
->device
->lun
,
6031 MSG_EXT_WDTR_BUS_8_BIT
,
6032 (AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
|AHC_TRANS_QUITE
),
6034 aic7xxx_set_syncrate(p
, NULL
, scb
->cmd
->device
->id
, scb
->cmd
->device
->channel
, 0, 0,
6035 0, AHC_TRANS_ACTIVE
|AHC_TRANS_CUR
|AHC_TRANS_QUITE
,
6037 aic_dev
->goal
.options
= 0;
6038 scb
->flags
&= ~SCB_MSGOUT_BITS
;
6039 if(aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
6041 printk(INFO_LEAD
"parity error during PPR message, reverting "
6042 "to WDTR/SDTR\n", p
->host_no
, CTL_OF_SCB(scb
));
6044 if ( aic_dev
->goal
.width
)
6046 aic_dev
->needwdtr
= aic_dev
->needwdtr_copy
= 1;
6048 if ( aic_dev
->goal
.offset
)
6050 if( aic_dev
->goal
.period
<= 9 )
6052 aic_dev
->goal
.period
= 10;
6054 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
= 1;
6060 * We've set the hardware to assert ATN if we get a parity
6061 * error on "in" phases, so all we need to do is stuff the
6062 * message buffer with the appropriate message. "In" phases
6063 * have set mesg_out to something other than MSG_NOP.
6065 if (mesg_out
!= MSG_NOOP
)
6067 aic_outb(p
, mesg_out
, MSG_OUT
);
6068 aic_outb(p
, aic_inb(p
, SCSISIGI
) | ATNO
, SCSISIGO
);
6071 aic_outb(p
, CLRSCSIPERR
, CLRSINT1
);
6072 aic_outb(p
, CLRSCSIINT
, CLRINT
);
6073 unpause_sequencer(p
, /* unpause_always */ TRUE
);
6075 else if ( (status
& REQINIT
) &&
6076 (p
->flags
& AHC_HANDLING_REQINITS
) )
6078 #ifdef AIC7XXX_VERBOSE_DEBUGGING
6079 if (aic7xxx_verbose
> 0xffff)
6080 printk(INFO_LEAD
"Handling REQINIT, SSTAT1=0x%x.\n", p
->host_no
,
6081 CTL_OF_SCB(scb
), aic_inb(p
, SSTAT1
));
6083 aic7xxx_handle_reqinit(p
, scb
);
6089 * We don't know what's going on. Turn off the
6090 * interrupt source and try to continue.
6092 if (aic7xxx_verbose
& VERBOSE_SCSIINT
)
6093 printk(INFO_LEAD
"Unknown SCSIINT status, SSTAT1(0x%x).\n",
6094 p
->host_no
, -1, -1, -1, status
);
6095 aic_outb(p
, status
, CLRSINT1
);
6096 aic_outb(p
, CLRSCSIINT
, CLRINT
);
6097 unpause_sequencer(p
, /* unpause always */ TRUE
);
6102 aic7xxx_done(p
, scb
);
6106 #ifdef AIC7XXX_VERBOSE_DEBUGGING
6108 aic7xxx_check_scbs(struct aic7xxx_host
*p
, char *buffer
)
6110 unsigned char saved_scbptr
, free_scbh
, dis_scbh
, wait_scbh
, temp
;
6112 static unsigned char scb_status
[AIC7XXX_MAXSCB
];
6114 #define SCB_NO_LIST 0
6115 #define SCB_FREE_LIST 1
6116 #define SCB_WAITING_LIST 2
6117 #define SCB_DISCONNECTED_LIST 4
6118 #define SCB_CURRENTLY_ACTIVE 8
6121 * Note, these checks will fail on a regular basis once the machine moves
6122 * beyond the bus scan phase. The problem is race conditions concerning
6123 * the scbs and where they are linked in. When you have 30 or so commands
6124 * outstanding on the bus, and run this twice with every interrupt, the
6125 * chances get pretty good that you'll catch the sequencer with an SCB
6126 * only partially linked in. Therefore, once we pass the scan phase
6127 * of the bus, we really should disable this function.
6130 memset(&scb_status
[0], 0, sizeof(scb_status
));
6132 saved_scbptr
= aic_inb(p
, SCBPTR
);
6133 if (saved_scbptr
>= p
->scb_data
->maxhscbs
)
6135 printk("Bogus SCBPTR %d\n", saved_scbptr
);
6138 scb_status
[saved_scbptr
] = SCB_CURRENTLY_ACTIVE
;
6139 free_scbh
= aic_inb(p
, FREE_SCBH
);
6140 if ( (free_scbh
!= SCB_LIST_NULL
) &&
6141 (free_scbh
>= p
->scb_data
->maxhscbs
) )
6143 printk("Bogus FREE_SCBH %d\n", free_scbh
);
6149 while( (temp
!= SCB_LIST_NULL
) && (temp
< p
->scb_data
->maxhscbs
) )
6151 if(scb_status
[temp
] & 0x07)
6153 printk("HSCB %d on multiple lists, status 0x%02x", temp
,
6154 scb_status
[temp
] | SCB_FREE_LIST
);
6157 scb_status
[temp
] |= SCB_FREE_LIST
;
6158 aic_outb(p
, temp
, SCBPTR
);
6159 temp
= aic_inb(p
, SCB_NEXT
);
6163 dis_scbh
= aic_inb(p
, DISCONNECTED_SCBH
);
6164 if ( (dis_scbh
!= SCB_LIST_NULL
) &&
6165 (dis_scbh
>= p
->scb_data
->maxhscbs
) )
6167 printk("Bogus DISCONNECTED_SCBH %d\n", dis_scbh
);
6173 while( (temp
!= SCB_LIST_NULL
) && (temp
< p
->scb_data
->maxhscbs
) )
6175 if(scb_status
[temp
] & 0x07)
6177 printk("HSCB %d on multiple lists, status 0x%02x", temp
,
6178 scb_status
[temp
] | SCB_DISCONNECTED_LIST
);
6181 scb_status
[temp
] |= SCB_DISCONNECTED_LIST
;
6182 aic_outb(p
, temp
, SCBPTR
);
6183 temp
= aic_inb(p
, SCB_NEXT
);
6187 wait_scbh
= aic_inb(p
, WAITING_SCBH
);
6188 if ( (wait_scbh
!= SCB_LIST_NULL
) &&
6189 (wait_scbh
>= p
->scb_data
->maxhscbs
) )
6191 printk("Bogus WAITING_SCBH %d\n", wait_scbh
);
6197 while( (temp
!= SCB_LIST_NULL
) && (temp
< p
->scb_data
->maxhscbs
) )
6199 if(scb_status
[temp
] & 0x07)
6201 printk("HSCB %d on multiple lists, status 0x%02x", temp
,
6202 scb_status
[temp
] | SCB_WAITING_LIST
);
6205 scb_status
[temp
] |= SCB_WAITING_LIST
;
6206 aic_outb(p
, temp
, SCBPTR
);
6207 temp
= aic_inb(p
, SCB_NEXT
);
6212 for(i
=0; i
< p
->scb_data
->maxhscbs
; i
++)
6214 aic_outb(p
, i
, SCBPTR
);
6215 temp
= aic_inb(p
, SCB_NEXT
);
6216 if ( ((temp
!= SCB_LIST_NULL
) &&
6217 (temp
>= p
->scb_data
->maxhscbs
)) )
6219 printk("HSCB %d bad, SCB_NEXT invalid(%d).\n", i
, temp
);
6224 printk("HSCB %d bad, SCB_NEXT points to self.\n", i
);
6227 if (scb_status
[i
] == 0)
6231 printk("Too many lost scbs.\n");
6235 aic_outb(p
, saved_scbptr
, SCBPTR
);
6236 unpause_sequencer(p
, FALSE
);
6239 printk("Bogus parameters found in card SCB array structures.\n");
6240 printk("%s\n", buffer
);
6241 aic7xxx_panic_abort(p
, NULL
);
6248 /*+F*************************************************************************
6250 * aic7xxx_handle_command_completion_intr
6253 * SCSI command completion interrupt handler.
6254 *-F*************************************************************************/
6256 aic7xxx_handle_command_completion_intr(struct aic7xxx_host
*p
)
6258 struct aic7xxx_scb
*scb
= NULL
;
6259 struct aic_dev_data
*aic_dev
;
6261 unsigned char scb_index
, tindex
;
6263 #ifdef AIC7XXX_VERBOSE_DEBUGGING
6264 if( (p
->isr_count
< 16) && (aic7xxx_verbose
> 0xffff) )
6265 printk(INFO_LEAD
"Command Complete Int.\n", p
->host_no
, -1, -1, -1);
6269 * Read the INTSTAT location after clearing the CMDINT bit. This forces
6270 * any posted PCI writes to flush to memory. Gerard Roudier suggested
6271 * this fix to the possible race of clearing the CMDINT bit but not
6272 * having all command bytes flushed onto the qoutfifo.
6274 aic_outb(p
, CLRCMDINT
, CLRINT
);
6275 aic_inb(p
, INTSTAT
);
6277 * The sequencer will continue running when it
6278 * issues this interrupt. There may be >1 commands
6279 * finished, so loop until we've processed them all.
6282 while (p
->qoutfifo
[p
->qoutfifonext
] != SCB_LIST_NULL
)
6284 scb_index
= p
->qoutfifo
[p
->qoutfifonext
];
6285 p
->qoutfifo
[p
->qoutfifonext
++] = SCB_LIST_NULL
;
6286 if ( scb_index
>= p
->scb_data
->numscbs
)
6288 printk(WARN_LEAD
"CMDCMPLT with invalid SCB index %d\n", p
->host_no
,
6289 -1, -1, -1, scb_index
);
6292 scb
= p
->scb_data
->scb_array
[scb_index
];
6293 if (!(scb
->flags
& SCB_ACTIVE
) || (scb
->cmd
== NULL
))
6295 printk(WARN_LEAD
"CMDCMPLT without command for SCB %d, SCB flags "
6296 "0x%x, cmd 0x%lx\n", p
->host_no
, -1, -1, -1, scb_index
, scb
->flags
,
6297 (unsigned long) scb
->cmd
);
6300 tindex
= TARGET_INDEX(scb
->cmd
);
6301 aic_dev
= AIC_DEV(scb
->cmd
);
6302 if (scb
->flags
& SCB_QUEUED_ABORT
)
6305 if ( ((aic_inb(p
, LASTPHASE
) & PHASE_MASK
) != P_BUSFREE
) &&
6306 (aic_inb(p
, SCB_TAG
) == scb
->hscb
->tag
) )
6308 unpause_sequencer(p
, FALSE
);
6311 aic7xxx_reset_device(p
, scb
->cmd
->device
->id
, scb
->cmd
->device
->channel
,
6312 scb
->cmd
->device
->lun
, scb
->hscb
->tag
);
6313 scb
->flags
&= ~(SCB_QUEUED_FOR_DONE
| SCB_RESET
| SCB_ABORT
|
6315 unpause_sequencer(p
, FALSE
);
6317 else if (scb
->flags
& SCB_ABORT
)
6320 * We started to abort this, but it completed on us, let it
6321 * through as successful
6323 scb
->flags
&= ~(SCB_ABORT
|SCB_RESET
);
6325 else if (scb
->flags
& SCB_SENSE
)
6327 char *buffer
= &scb
->cmd
->sense_buffer
[0];
6329 if (buffer
[12] == 0x47 || buffer
[12] == 0x54)
6332 * Signal that we need to re-negotiate things.
6334 aic_dev
->needppr
= aic_dev
->needppr_copy
;
6335 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
;
6336 aic_dev
->needwdtr
= aic_dev
->needwdtr_copy
;
6340 if (scb
->hscb
->residual_SG_segment_count
!= 0)
6342 aic7xxx_calculate_residual(p
, scb
);
6344 cmd
->result
|= (aic7xxx_error(cmd
) << 16);
6345 aic7xxx_done(p
, scb
);
6349 /*+F*************************************************************************
6354 * SCSI controller interrupt handler.
6355 *-F*************************************************************************/
6357 aic7xxx_isr(int irq
, void *dev_id
, struct pt_regs
*regs
)
6359 struct aic7xxx_host
*p
;
6360 unsigned char intstat
;
6362 p
= (struct aic7xxx_host
*)dev_id
;
6365 * Just a few sanity checks. Make sure that we have an int pending.
6366 * Also, if PCI, then we are going to check for a PCI bus error status
6367 * should we get too many spurious interrupts.
6369 if (!((intstat
= aic_inb(p
, INTSTAT
)) & INT_PEND
))
6372 if ( (p
->chip
& AHC_PCI
) && (p
->spurious_int
> 500) &&
6373 !(p
->flags
& AHC_HANDLING_REQINITS
) )
6375 if ( aic_inb(p
, ERROR
) & PCIERRSTAT
)
6377 aic7xxx_pci_intr(p
);
6379 p
->spurious_int
= 0;
6381 else if ( !(p
->flags
& AHC_HANDLING_REQINITS
) )
6389 p
->spurious_int
= 0;
6392 * Keep track of interrupts for /proc/scsi
6396 #ifdef AIC7XXX_VERBOSE_DEBUGGING
6397 if ( (p
->isr_count
< 16) && (aic7xxx_verbose
> 0xffff) &&
6398 (aic7xxx_panic_on_abort
) && (p
->flags
& AHC_PAGESCBS
) )
6399 aic7xxx_check_scbs(p
, "Bogus settings at start of interrupt.");
6403 * Handle all the interrupt sources - especially for SCSI
6404 * interrupts, we won't get a second chance at them.
6406 if (intstat
& CMDCMPLT
)
6408 aic7xxx_handle_command_completion_intr(p
);
6411 if (intstat
& BRKADRINT
)
6414 unsigned char errno
= aic_inb(p
, ERROR
);
6416 printk(KERN_ERR
"(scsi%d) BRKADRINT error(0x%x):\n", p
->host_no
, errno
);
6417 for (i
= 0; i
< NUMBER(hard_error
); i
++)
6419 if (errno
& hard_error
[i
].errno
)
6421 printk(KERN_ERR
" %s\n", hard_error
[i
].errmesg
);
6424 printk(KERN_ERR
"(scsi%d) SEQADDR=0x%x\n", p
->host_no
,
6425 (((aic_inb(p
, SEQADDR1
) << 8) & 0x100) | aic_inb(p
, SEQADDR0
)));
6426 if (aic7xxx_panic_on_abort
)
6427 aic7xxx_panic_abort(p
, NULL
);
6429 if (errno
& PCIERRSTAT
)
6430 aic7xxx_pci_intr(p
);
6432 if (errno
& (SQPARERR
| ILLOPCODE
| ILLSADDR
))
6434 panic("aic7xxx: unrecoverable BRKADRINT.\n");
6436 if (errno
& ILLHADDR
)
6438 printk(KERN_ERR
"(scsi%d) BUG! Driver accessed chip without first "
6439 "pausing controller!\n", p
->host_no
);
6441 #ifdef AIC7XXX_VERBOSE_DEBUGGING
6442 if (errno
& DPARERR
)
6444 if (aic_inb(p
, DMAPARAMS
) & DIRECTION
)
6445 printk("(scsi%d) while DMAing SCB from host to card.\n", p
->host_no
);
6447 printk("(scsi%d) while DMAing SCB from card to host.\n", p
->host_no
);
6450 aic_outb(p
, CLRPARERR
| CLRBRKADRINT
, CLRINT
);
6451 unpause_sequencer(p
, FALSE
);
6454 if (intstat
& SEQINT
)
6457 * Read the CCSCBCTL register to work around a bug in the Ultra2 cards
6459 if(p
->features
& AHC_ULTRA2
)
6461 aic_inb(p
, CCSCBCTL
);
6463 aic7xxx_handle_seqint(p
, intstat
);
6466 if (intstat
& SCSIINT
)
6468 aic7xxx_handle_scsiint(p
, intstat
);
6471 #ifdef AIC7XXX_VERBOSE_DEBUGGING
6472 if ( (p
->isr_count
< 16) && (aic7xxx_verbose
> 0xffff) &&
6473 (aic7xxx_panic_on_abort
) && (p
->flags
& AHC_PAGESCBS
) )
6474 aic7xxx_check_scbs(p
, "Bogus settings at end of interrupt.");
6479 /*+F*************************************************************************
6484 * This is a gross hack to solve a problem in linux kernels 2.1.85 and
6485 * above. Please, children, do not try this at home, and if you ever see
6486 * anything like it, please inform the Gross Hack Police immediately
6487 *-F*************************************************************************/
6489 do_aic7xxx_isr(int irq
, void *dev_id
, struct pt_regs
*regs
)
6491 unsigned long cpu_flags
;
6492 struct aic7xxx_host
*p
;
6494 p
= (struct aic7xxx_host
*)dev_id
;
6497 spin_lock_irqsave(p
->host
->host_lock
, cpu_flags
);
6498 p
->flags
|= AHC_IN_ISR
;
6501 aic7xxx_isr(irq
, dev_id
, regs
);
6502 } while ( (aic_inb(p
, INTSTAT
) & INT_PEND
) );
6503 aic7xxx_done_cmds_complete(p
);
6504 aic7xxx_run_waiting_queues(p
);
6505 p
->flags
&= ~AHC_IN_ISR
;
6506 spin_unlock_irqrestore(p
->host
->host_lock
, cpu_flags
);
6511 /*+F*************************************************************************
6513 * aic7xxx_init_transinfo
6516 * Set up the initial aic_dev values from the BIOS settings and from
6518 *-F*************************************************************************/
6520 aic7xxx_init_transinfo(struct aic7xxx_host
*p
, struct aic_dev_data
*aic_dev
)
6522 Scsi_Device
*sdpnt
= aic_dev
->SDptr
;
6523 unsigned char tindex
;
6525 tindex
= sdpnt
->id
| (sdpnt
->channel
<< 3);
6526 if (!(aic_dev
->flags
& DEVICE_DTR_SCANNED
))
6528 aic_dev
->flags
|= DEVICE_DTR_SCANNED
;
6530 if ( sdpnt
->wdtr
&& (p
->features
& AHC_WIDE
) )
6532 aic_dev
->needwdtr
= aic_dev
->needwdtr_copy
= 1;
6533 aic_dev
->goal
.width
= p
->user
[tindex
].width
;
6537 aic_dev
->needwdtr
= aic_dev
->needwdtr_copy
= 0;
6539 aic7xxx_set_width(p
, sdpnt
->id
, sdpnt
->channel
, sdpnt
->lun
,
6540 MSG_EXT_WDTR_BUS_8_BIT
, (AHC_TRANS_ACTIVE
|
6542 AHC_TRANS_CUR
), aic_dev
);
6543 unpause_sequencer(p
, FALSE
);
6545 if ( sdpnt
->sdtr
&& p
->user
[tindex
].offset
)
6547 aic_dev
->goal
.period
= p
->user
[tindex
].period
;
6548 aic_dev
->goal
.options
= p
->user
[tindex
].options
;
6549 if (p
->features
& AHC_ULTRA2
)
6550 aic_dev
->goal
.offset
= MAX_OFFSET_ULTRA2
;
6551 else if (aic_dev
->goal
.width
== MSG_EXT_WDTR_BUS_16_BIT
)
6552 aic_dev
->goal
.offset
= MAX_OFFSET_16BIT
;
6554 aic_dev
->goal
.offset
= MAX_OFFSET_8BIT
;
6555 if ( sdpnt
->ppr
&& p
->user
[tindex
].period
<= 9 &&
6556 p
->user
[tindex
].options
)
6558 aic_dev
->needppr
= aic_dev
->needppr_copy
= 1;
6559 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
= 0;
6560 aic_dev
->needwdtr
= aic_dev
->needwdtr_copy
= 0;
6561 aic_dev
->flags
|= DEVICE_SCSI_3
;
6565 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
= 1;
6566 aic_dev
->goal
.period
= MAX(10, aic_dev
->goal
.period
);
6567 aic_dev
->goal
.options
= 0;
6572 aic_dev
->needsdtr
= aic_dev
->needsdtr_copy
= 0;
6573 aic_dev
->goal
.period
= 255;
6574 aic_dev
->goal
.offset
= 0;
6575 aic_dev
->goal
.options
= 0;
6577 aic_dev
->flags
|= DEVICE_PRINT_DTR
;
6581 /*+F*************************************************************************
6583 * aic7xxx_slave_alloc
6586 * Set up the initial aic_dev struct pointers
6587 *-F*************************************************************************/
6589 aic7xxx_slave_alloc(Scsi_Device
*SDptr
)
6591 struct aic7xxx_host
*p
= (struct aic7xxx_host
*)SDptr
->host
->hostdata
;
6592 struct aic_dev_data
*aic_dev
;
6594 aic_dev
= kmalloc(sizeof(struct aic_dev_data
), GFP_ATOMIC
| GFP_KERNEL
);
6598 * Check to see if channel was scanned.
6601 if (!(p
->flags
& AHC_A_SCANNED
) && (SDptr
->channel
== 0))
6603 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
6604 printk(INFO_LEAD
"Scanning channel for devices.\n",
6605 p
->host_no
, 0, -1, -1);
6606 p
->flags
|= AHC_A_SCANNED
;
6610 if (!(p
->flags
& AHC_B_SCANNED
) && (SDptr
->channel
== 1))
6612 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
6613 printk(INFO_LEAD
"Scanning channel for devices.\n",
6614 p
->host_no
, 1, -1, -1);
6615 p
->flags
|= AHC_B_SCANNED
;
6619 memset(aic_dev
, 0, sizeof(struct aic_dev_data
));
6620 SDptr
->hostdata
= aic_dev
;
6621 aic_dev
->SDptr
= SDptr
;
6622 aic_dev
->max_q_depth
= 1;
6623 aic_dev
->temp_q_depth
= 1;
6624 scbq_init(&aic_dev
->delayed_scbs
);
6625 INIT_LIST_HEAD(&aic_dev
->list
);
6626 list_add_tail(&aic_dev
->list
, &p
->aic_devs
);
6630 /*+F*************************************************************************
6632 * aic7xxx_device_queue_depth
6635 * Determines the queue depth for a given device. There are two ways
6636 * a queue depth can be obtained for a tagged queueing device. One
6637 * way is the default queue depth which is determined by whether
6638 * aic7xxx_default_queue_depth. The other is by the aic7xxx_tag_info
6641 * If tagged queueing isn't supported on the device, then we set the
6642 * depth to p->host->hostt->cmd_per_lun for internal driver queueing.
6643 * as the default queue depth. Otherwise, we use either 4 or 8 as the
6644 * default queue depth (dependent on the number of hardware SCBs).
6645 * The other way we determine queue depth is through the use of the
6646 * aic7xxx_tag_info array which is enabled by defining
6647 * AIC7XXX_TAGGED_QUEUEING_BY_DEVICE. This array can be initialized
6648 * with queue depths for individual devices. It also allows tagged
6649 * queueing to be [en|dis]abled for a specific adapter.
6650 *-F*************************************************************************/
6652 aic7xxx_device_queue_depth(struct aic7xxx_host
*p
, Scsi_Device
*device
)
6654 int tag_enabled
= FALSE
;
6655 struct aic_dev_data
*aic_dev
= device
->hostdata
;
6656 unsigned char tindex
;
6658 tindex
= device
->id
| (device
->channel
<< 3);
6660 if (device
->simple_tags
)
6661 return; // We've already enabled this device
6663 if (device
->tagged_supported
)
6667 if (!(p
->discenable
& (1 << tindex
)))
6669 if (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
6670 printk(INFO_LEAD
"Disconnection disabled, unable to "
6671 "enable tagged queueing.\n",
6672 p
->host_no
, device
->channel
, device
->id
, device
->lun
);
6673 tag_enabled
= FALSE
;
6677 if (p
->instance
>= NUMBER(aic7xxx_tag_info
))
6679 static int print_warning
= TRUE
;
6682 printk(KERN_INFO
"aic7xxx: WARNING, insufficient tag_info instances for"
6683 " installed controllers.\n");
6684 printk(KERN_INFO
"aic7xxx: Please update the aic7xxx_tag_info array in"
6685 " the aic7xxx.c source file.\n");
6686 print_warning
= FALSE
;
6688 aic_dev
->max_q_depth
= aic_dev
->temp_q_depth
=
6689 aic7xxx_default_queue_depth
;
6694 if (aic7xxx_tag_info
[p
->instance
].tag_commands
[tindex
] == 255)
6696 tag_enabled
= FALSE
;
6698 else if (aic7xxx_tag_info
[p
->instance
].tag_commands
[tindex
] == 0)
6700 aic_dev
->max_q_depth
= aic_dev
->temp_q_depth
=
6701 aic7xxx_default_queue_depth
;
6705 aic_dev
->max_q_depth
= aic_dev
->temp_q_depth
=
6706 aic7xxx_tag_info
[p
->instance
].tag_commands
[tindex
];
6713 if (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
6715 printk(INFO_LEAD
"Tagged queuing enabled, queue depth %d.\n",
6716 p
->host_no
, device
->channel
, device
->id
,
6717 device
->lun
, aic_dev
->max_q_depth
);
6719 scsi_adjust_queue_depth(device
, MSG_ORDERED_TAG
, aic_dev
->max_q_depth
);
6723 if (aic7xxx_verbose
& VERBOSE_NEGOTIATION2
)
6725 printk(INFO_LEAD
"Tagged queuing disabled, queue depth %d.\n",
6726 p
->host_no
, device
->channel
, device
->id
,
6727 device
->lun
, device
->host
->cmd_per_lun
);
6729 scsi_adjust_queue_depth(device
, 0, device
->host
->cmd_per_lun
);
6734 /*+F*************************************************************************
6736 * aic7xxx_slave_destroy
6739 * prepare for this device to go away
6740 *-F*************************************************************************/
6742 aic7xxx_slave_destroy(Scsi_Device
*SDptr
)
6744 struct aic_dev_data
*aic_dev
= SDptr
->hostdata
;
6746 list_del(&aic_dev
->list
);
6747 SDptr
->hostdata
= NULL
;
6752 /*+F*************************************************************************
6754 * aic7xxx_slave_configure
6757 * Configure the device we are attaching to the controller. This is
6758 * where we get to do things like scan the INQUIRY data, set queue
6759 * depths, allocate command structs, etc.
6760 *-F*************************************************************************/
6762 aic7xxx_slave_configure(Scsi_Device
*SDptr
)
6764 struct aic7xxx_host
*p
= (struct aic7xxx_host
*) SDptr
->host
->hostdata
;
6765 struct aic_dev_data
*aic_dev
;
6768 aic_dev
= (struct aic_dev_data
*)SDptr
->hostdata
;
6770 aic7xxx_init_transinfo(p
, aic_dev
);
6771 aic7xxx_device_queue_depth(p
, SDptr
);
6772 if(list_empty(&aic_dev
->list
))
6773 list_add_tail(&aic_dev
->list
, &p
->aic_devs
);
6776 list_for_each_entry(aic_dev
, &p
->aic_devs
, list
) {
6777 scbnum
+= aic_dev
->max_q_depth
;
6779 while (scbnum
> p
->scb_data
->numscbs
)
6782 * Pre-allocate the needed SCBs to get around the possibility of having
6783 * to allocate some when memory is more or less exhausted and we need
6784 * the SCB in order to perform a swap operation (possible deadlock)
6786 if ( aic7xxx_allocate_scb(p
) == 0 )
6794 /*+F*************************************************************************
6799 * Probing for EISA boards: it looks like the first two bytes
6800 * are a manufacturer code - three characters, five bits each:
6802 * BYTE 0 BYTE 1 BYTE 2 BYTE 3
6803 * ?1111122 22233333 PPPPPPPP RRRRRRRR
6805 * The characters are baselined off ASCII '@', so add that value
6806 * to each to get the real ASCII code for it. The next two bytes
6807 * appear to be a product and revision number, probably vendor-
6808 * specific. This is what is being searched for at each port,
6809 * and what should probably correspond to the ID= field in the
6810 * ECU's .cfg file for the card - if your card is not detected,
6811 * make sure your signature is listed in the array.
6813 * The fourth byte's lowest bit seems to be an enabled/disabled
6814 * flag (rest of the bits are reserved?).
6816 * NOTE: This function is only needed on Intel and Alpha platforms,
6817 * the other platforms we support don't have EISA/VLB busses. So,
6818 * we #ifdef this entire function to avoid compiler warnings about
6819 * an unused function.
6820 *-F*************************************************************************/
6821 #if defined(__i386__) || defined(__alpha__)
6823 aic7xxx_probe(int slot
, int base
, ahc_flag_type
*flags
)
6826 unsigned char buf
[4];
6830 unsigned char signature
[sizeof(buf
)];
6834 { 4, { 0x04, 0x90, 0x77, 0x70 },
6835 AHC_AIC7770
|AHC_EISA
, FALSE
}, /* mb 7770 */
6836 { 4, { 0x04, 0x90, 0x77, 0x71 },
6837 AHC_AIC7770
|AHC_EISA
, FALSE
}, /* host adapter 274x */
6838 { 4, { 0x04, 0x90, 0x77, 0x56 },
6839 AHC_AIC7770
|AHC_VL
, FALSE
}, /* 284x BIOS enabled */
6840 { 4, { 0x04, 0x90, 0x77, 0x57 },
6841 AHC_AIC7770
|AHC_VL
, TRUE
} /* 284x BIOS disabled */
6845 * The VL-bus cards need to be primed by
6846 * writing before a signature check.
6848 for (i
= 0; i
< sizeof(buf
); i
++)
6850 outb(0x80 + i
, base
);
6851 buf
[i
] = inb(base
+ i
);
6854 for (i
= 0; i
< NUMBER(AIC7xxx
); i
++)
6857 * Signature match on enabled card?
6859 if (!memcmp(buf
, AIC7xxx
[i
].signature
, AIC7xxx
[i
].n
))
6861 if (inb(base
+ 4) & 1)
6863 if (AIC7xxx
[i
].bios_disabled
)
6865 *flags
|= AHC_USEDEFAULTS
;
6869 *flags
|= AHC_BIOS_ENABLED
;
6874 printk("aic7xxx: <Adaptec 7770 SCSI Host Adapter> "
6875 "disabled at slot %d, ignored.\n", slot
);
6881 #endif /* (__i386__) || (__alpha__) */
6884 /*+F*************************************************************************
6889 * Reads the 2840 serial EEPROM and returns 1 if successful and 0 if
6892 * See read_seeprom (for the 2940) for the instruction set of the 93C46
6895 * The 2840 interface to the 93C46 serial EEPROM is through the
6896 * STATUS_2840 and SEECTL_2840 registers. The CS_2840, CK_2840, and
6897 * DO_2840 bits of the SEECTL_2840 register are connected to the chip
6898 * select, clock, and data out lines respectively of the serial EEPROM.
6899 * The DI_2840 bit of the STATUS_2840 is connected to the data in line
6900 * of the serial EEPROM. The EEPROM_TF bit of STATUS_2840 register is
6901 * useful in that it gives us an 800 nsec timer. After a read from the
6902 * SEECTL_2840 register the timing flag is cleared and goes high 800 nsec
6904 *-F*************************************************************************/
6906 read_284x_seeprom(struct aic7xxx_host
*p
, struct seeprom_config
*sc
)
6910 unsigned short checksum
= 0;
6911 unsigned short *seeprom
= (unsigned short *) sc
;
6912 struct seeprom_cmd
{
6914 unsigned char bits
[3];
6916 struct seeprom_cmd seeprom_read
= {3, {1, 1, 0}};
6918 #define CLOCK_PULSE(p) \
6919 while ((aic_inb(p, STATUS_2840) & EEPROM_TF) == 0) \
6921 ; /* Do nothing */ \
6923 (void) aic_inb(p, SEECTL_2840);
6926 * Read the first 32 registers of the seeprom. For the 2840,
6927 * the 93C46 SEEPROM is a 1024-bit device with 64 16-bit registers
6928 * but only the first 32 are used by Adaptec BIOS. The loop
6929 * will range from 0 to 31.
6931 for (k
= 0; k
< (sizeof(*sc
) / 2); k
++)
6934 * Send chip select for one clock cycle.
6936 aic_outb(p
, CK_2840
| CS_2840
, SEECTL_2840
);
6940 * Now we're ready to send the read command followed by the
6941 * address of the 16-bit register we want to read.
6943 for (i
= 0; i
< seeprom_read
.len
; i
++)
6945 temp
= CS_2840
| seeprom_read
.bits
[i
];
6946 aic_outb(p
, temp
, SEECTL_2840
);
6948 temp
= temp
^ CK_2840
;
6949 aic_outb(p
, temp
, SEECTL_2840
);
6953 * Send the 6 bit address (MSB first, LSB last).
6955 for (i
= 5; i
>= 0; i
--)
6958 temp
= (temp
>> i
) & 1; /* Mask out all but lower bit. */
6959 temp
= CS_2840
| temp
;
6960 aic_outb(p
, temp
, SEECTL_2840
);
6962 temp
= temp
^ CK_2840
;
6963 aic_outb(p
, temp
, SEECTL_2840
);
6968 * Now read the 16 bit register. An initial 0 precedes the
6969 * register contents which begins with bit 15 (MSB) and ends
6970 * with bit 0 (LSB). The initial 0 will be shifted off the
6971 * top of our word as we let the loop run from 0 to 16.
6973 for (i
= 0; i
<= 16; i
++)
6976 aic_outb(p
, temp
, SEECTL_2840
);
6978 temp
= temp
^ CK_2840
;
6979 seeprom
[k
] = (seeprom
[k
] << 1) | (aic_inb(p
, STATUS_2840
) & DI_2840
);
6980 aic_outb(p
, temp
, SEECTL_2840
);
6984 * The serial EEPROM has a checksum in the last word. Keep a
6985 * running checksum for all words read except for the last
6986 * word. We'll verify the checksum after all words have been
6989 if (k
< (sizeof(*sc
) / 2) - 1)
6991 checksum
= checksum
+ seeprom
[k
];
6995 * Reset the chip select for the next command cycle.
6997 aic_outb(p
, 0, SEECTL_2840
);
6999 aic_outb(p
, CK_2840
, SEECTL_2840
);
7001 aic_outb(p
, 0, SEECTL_2840
);
7006 printk("Computed checksum 0x%x, checksum read 0x%x\n", checksum
, sc
->checksum
);
7007 printk("Serial EEPROM:");
7008 for (k
= 0; k
< (sizeof(*sc
) / 2); k
++)
7010 if (((k
% 8) == 0) && (k
!= 0))
7014 printk(" 0x%x", seeprom
[k
]);
7019 if (checksum
!= sc
->checksum
)
7021 printk("aic7xxx: SEEPROM checksum error, ignoring SEEPROM settings.\n");
7029 #define CLOCK_PULSE(p) \
7034 pause_sequencer(p); /* This is just to generate some PCI */ \
7035 /* traffic so the PCI read is flushed */ \
7036 /* it shouldn't be needed, but some */ \
7037 /* chipsets do indeed appear to need */ \
7038 /* something to force PCI reads to get */ \
7040 udelay(1); /* Do nothing */ \
7041 } while (((aic_inb(p, SEECTL) & SEERDY) == 0) && (++limit < 1000)); \
7044 /*+F*************************************************************************
7049 * Acquires access to the memory port on PCI controllers.
7050 *-F*************************************************************************/
7052 acquire_seeprom(struct aic7xxx_host
*p
)
7056 * Request access of the memory port. When access is
7057 * granted, SEERDY will go high. We use a 1 second
7058 * timeout which should be near 1 second more than
7059 * is needed. Reason: after the 7870 chip reset, there
7060 * should be no contention.
7062 aic_outb(p
, SEEMS
, SEECTL
);
7064 if ((aic_inb(p
, SEECTL
) & SEERDY
) == 0)
7066 aic_outb(p
, 0, SEECTL
);
7072 /*+F*************************************************************************
7077 * Releases access to the memory port on PCI controllers.
7078 *-F*************************************************************************/
7080 release_seeprom(struct aic7xxx_host
*p
)
7083 * Make sure the SEEPROM is ready before we release it.
7086 aic_outb(p
, 0, SEECTL
);
7089 /*+F*************************************************************************
7094 * Reads the serial EEPROM and returns 1 if successful and 0 if
7097 * The instruction set of the 93C46/56/66 chips is as follows:
7100 * Function Bit Code Address Data Description
7101 * -------------------------------------------------------------------
7102 * READ 1 10 A5 - A0 Reads data stored in memory,
7103 * starting at specified address
7104 * EWEN 1 00 11XXXX Write enable must precede
7105 * all programming modes
7106 * ERASE 1 11 A5 - A0 Erase register A5A4A3A2A1A0
7107 * WRITE 1 01 A5 - A0 D15 - D0 Writes register
7108 * ERAL 1 00 10XXXX Erase all registers
7109 * WRAL 1 00 01XXXX D15 - D0 Writes to all registers
7110 * EWDS 1 00 00XXXX Disables all programming
7112 * *Note: A value of X for address is a don't care condition.
7113 * *Note: The 93C56 and 93C66 have 8 address bits.
7116 * The 93C46 has a four wire interface: clock, chip select, data in, and
7117 * data out. In order to perform one of the above functions, you need
7118 * to enable the chip select for a clock period (typically a minimum of
7119 * 1 usec, with the clock high and low a minimum of 750 and 250 nsec
7120 * respectively. While the chip select remains high, you can clock in
7121 * the instructions (above) starting with the start bit, followed by the
7122 * OP code, Address, and Data (if needed). For the READ instruction, the
7123 * requested 16-bit register contents is read from the data out line but
7124 * is preceded by an initial zero (leading 0, followed by 16-bits, MSB
7125 * first). The clock cycling from low to high initiates the next data
7126 * bit to be sent from the chip.
7128 * The 78xx interface to the 93C46 serial EEPROM is through the SEECTL
7129 * register. After successful arbitration for the memory port, the
7130 * SEECS bit of the SEECTL register is connected to the chip select.
7131 * The SEECK, SEEDO, and SEEDI are connected to the clock, data out,
7132 * and data in lines respectively. The SEERDY bit of SEECTL is useful
7133 * in that it gives us an 800 nsec timer. After a write to the SEECTL
7134 * register, the SEERDY goes high 800 nsec later. The one exception
7135 * to this is when we first request access to the memory port. The
7136 * SEERDY goes high to signify that access has been granted and, for
7137 * this case, has no implied timing.
7138 *-F*************************************************************************/
7140 read_seeprom(struct aic7xxx_host
*p
, int offset
,
7141 unsigned short *scarray
, unsigned int len
, seeprom_chip_type chip
)
7145 unsigned short checksum
= 0;
7146 struct seeprom_cmd
{
7148 unsigned char bits
[3];
7150 struct seeprom_cmd seeprom_read
= {3, {1, 1, 0}};
7153 * Request access of the memory port.
7155 if (acquire_seeprom(p
) == 0)
7161 * Read 'len' registers of the seeprom. For the 7870, the 93C46
7162 * SEEPROM is a 1024-bit device with 64 16-bit registers but only
7163 * the first 32 are used by Adaptec BIOS. Some adapters use the
7164 * 93C56 SEEPROM which is a 2048-bit device. The loop will range
7165 * from 0 to 'len' - 1.
7167 for (k
= 0; k
< len
; k
++)
7170 * Send chip select for one clock cycle.
7172 aic_outb(p
, SEEMS
| SEECK
| SEECS
, SEECTL
);
7176 * Now we're ready to send the read command followed by the
7177 * address of the 16-bit register we want to read.
7179 for (i
= 0; i
< seeprom_read
.len
; i
++)
7181 temp
= SEEMS
| SEECS
| (seeprom_read
.bits
[i
] << 1);
7182 aic_outb(p
, temp
, SEECTL
);
7184 temp
= temp
^ SEECK
;
7185 aic_outb(p
, temp
, SEECTL
);
7189 * Send the 6 or 8 bit address (MSB first, LSB last).
7191 for (i
= ((int) chip
- 1); i
>= 0; i
--)
7194 temp
= (temp
>> i
) & 1; /* Mask out all but lower bit. */
7195 temp
= SEEMS
| SEECS
| (temp
<< 1);
7196 aic_outb(p
, temp
, SEECTL
);
7198 temp
= temp
^ SEECK
;
7199 aic_outb(p
, temp
, SEECTL
);
7204 * Now read the 16 bit register. An initial 0 precedes the
7205 * register contents which begins with bit 15 (MSB) and ends
7206 * with bit 0 (LSB). The initial 0 will be shifted off the
7207 * top of our word as we let the loop run from 0 to 16.
7209 for (i
= 0; i
<= 16; i
++)
7211 temp
= SEEMS
| SEECS
;
7212 aic_outb(p
, temp
, SEECTL
);
7214 temp
= temp
^ SEECK
;
7215 scarray
[k
] = (scarray
[k
] << 1) | (aic_inb(p
, SEECTL
) & SEEDI
);
7216 aic_outb(p
, temp
, SEECTL
);
7221 * The serial EEPROM should have a checksum in the last word.
7222 * Keep a running checksum for all words read except for the
7223 * last word. We'll verify the checksum after all words have
7228 checksum
= checksum
+ scarray
[k
];
7232 * Reset the chip select for the next command cycle.
7234 aic_outb(p
, SEEMS
, SEECTL
);
7236 aic_outb(p
, SEEMS
| SEECK
, SEECTL
);
7238 aic_outb(p
, SEEMS
, SEECTL
);
7243 * Release access to the memory port and the serial EEPROM.
7248 printk("Computed checksum 0x%x, checksum read 0x%x\n",
7249 checksum
, scarray
[len
- 1]);
7250 printk("Serial EEPROM:");
7251 for (k
= 0; k
< len
; k
++)
7253 if (((k
% 8) == 0) && (k
!= 0))
7257 printk(" 0x%x", scarray
[k
]);
7261 if ( (checksum
!= scarray
[len
- 1]) || (checksum
== 0) )
7269 /*+F*************************************************************************
7274 * Reads the BRDCTL register.
7275 *-F*************************************************************************/
7276 static unsigned char
7277 read_brdctl(struct aic7xxx_host
*p
)
7279 unsigned char brdctl
, value
;
7282 * Make sure the SEEPROM is ready before we access it
7285 if (p
->features
& AHC_ULTRA2
)
7287 brdctl
= BRDRW_ULTRA2
;
7288 aic_outb(p
, brdctl
, BRDCTL
);
7290 value
= aic_inb(p
, BRDCTL
);
7295 if ( !((p
->chip
& AHC_CHIPID_MASK
) == AHC_AIC7895
) ||
7296 (p
->flags
& AHC_CHNLB
) )
7300 aic_outb(p
, brdctl
, BRDCTL
);
7302 value
= aic_inb(p
, BRDCTL
);
7304 aic_outb(p
, 0, BRDCTL
);
7309 /*+F*************************************************************************
7314 * Writes a value to the BRDCTL register.
7315 *-F*************************************************************************/
7317 write_brdctl(struct aic7xxx_host
*p
, unsigned char value
)
7319 unsigned char brdctl
;
7322 * Make sure the SEEPROM is ready before we access it
7325 if (p
->features
& AHC_ULTRA2
)
7328 aic_outb(p
, brdctl
, BRDCTL
);
7330 brdctl
|= BRDSTB_ULTRA2
;
7331 aic_outb(p
, brdctl
, BRDCTL
);
7333 brdctl
&= ~BRDSTB_ULTRA2
;
7334 aic_outb(p
, brdctl
, BRDCTL
);
7342 if ( !((p
->chip
& AHC_CHIPID_MASK
) == AHC_AIC7895
) ||
7343 (p
->flags
& AHC_CHNLB
) )
7347 brdctl
= BRDSTB
| BRDCS
;
7348 aic_outb(p
, brdctl
, BRDCTL
);
7351 aic_outb(p
, brdctl
, BRDCTL
);
7354 aic_outb(p
, brdctl
, BRDCTL
);
7357 aic_outb(p
, brdctl
, BRDCTL
);
7362 /*+F*************************************************************************
7364 * aic785x_cable_detect
7367 * Detect the cables that are present on aic785x class controller chips
7368 *-F*************************************************************************/
7370 aic785x_cable_detect(struct aic7xxx_host
*p
, int *int_50
,
7371 int *ext_present
, int *eeprom
)
7373 unsigned char brdctl
;
7375 aic_outb(p
, BRDRW
| BRDCS
, BRDCTL
);
7377 aic_outb(p
, 0, BRDCTL
);
7379 brdctl
= aic_inb(p
, BRDCTL
);
7381 *int_50
= !(brdctl
& BRDDAT5
);
7382 *ext_present
= !(brdctl
& BRDDAT6
);
7383 *eeprom
= (aic_inb(p
, SPIOCAP
) & EEPROM
);
7388 /*+F*************************************************************************
7390 * aic2940_uwpro_cable_detect
7393 * Detect the cables that are present on the 2940-UWPro cards
7395 * NOTE: This function assumes the SEEPROM will have already been acquired
7396 * prior to invocation of this function.
7397 *-F*************************************************************************/
7399 aic2940_uwpro_wide_cable_detect(struct aic7xxx_host
*p
, int *int_68
,
7400 int *ext_68
, int *eeprom
)
7402 unsigned char brdctl
;
7405 * First read the status of our cables. Set the rom bank to
7406 * 0 since the bank setting serves as a multiplexor for the
7407 * cable detection logic. BRDDAT5 controls the bank switch.
7412 * Now we read the state of the internal 68 connector. BRDDAT6
7413 * is don't care, BRDDAT7 is internal 68. The cable is
7414 * present if the bit is 0
7416 brdctl
= read_brdctl(p
);
7417 *int_68
= !(brdctl
& BRDDAT7
);
7420 * Set the bank bit in brdctl and then read the external cable state
7421 * and the EEPROM status
7423 write_brdctl(p
, BRDDAT5
);
7424 brdctl
= read_brdctl(p
);
7426 *ext_68
= !(brdctl
& BRDDAT6
);
7427 *eeprom
= !(brdctl
& BRDDAT7
);
7430 * We're done, the calling function will release the SEEPROM for us
7434 /*+F*************************************************************************
7436 * aic787x_cable_detect
7439 * Detect the cables that are present on aic787x class controller chips
7441 * NOTE: This function assumes the SEEPROM will have already been acquired
7442 * prior to invocation of this function.
7443 *-F*************************************************************************/
7445 aic787x_cable_detect(struct aic7xxx_host
*p
, int *int_50
, int *int_68
,
7446 int *ext_present
, int *eeprom
)
7448 unsigned char brdctl
;
7451 * First read the status of our cables. Set the rom bank to
7452 * 0 since the bank setting serves as a multiplexor for the
7453 * cable detection logic. BRDDAT5 controls the bank switch.
7458 * Now we read the state of the two internal connectors. BRDDAT6
7459 * is internal 50, BRDDAT7 is internal 68. For each, the cable is
7460 * present if the bit is 0
7462 brdctl
= read_brdctl(p
);
7463 *int_50
= !(brdctl
& BRDDAT6
);
7464 *int_68
= !(brdctl
& BRDDAT7
);
7467 * Set the bank bit in brdctl and then read the external cable state
7468 * and the EEPROM status
7470 write_brdctl(p
, BRDDAT5
);
7471 brdctl
= read_brdctl(p
);
7473 *ext_present
= !(brdctl
& BRDDAT6
);
7474 *eeprom
= !(brdctl
& BRDDAT7
);
7477 * We're done, the calling function will release the SEEPROM for us
7481 /*+F*************************************************************************
7483 * aic787x_ultra2_term_detect
7486 * Detect the termination settings present on ultra2 class controllers
7488 * NOTE: This function assumes the SEEPROM will have already been acquired
7489 * prior to invocation of this function.
7490 *-F*************************************************************************/
7492 aic7xxx_ultra2_term_detect(struct aic7xxx_host
*p
, int *enableSE_low
,
7493 int *enableSE_high
, int *enableLVD_low
,
7494 int *enableLVD_high
, int *eprom_present
)
7496 unsigned char brdctl
;
7498 brdctl
= read_brdctl(p
);
7500 *eprom_present
= (brdctl
& BRDDAT7
);
7501 *enableSE_high
= (brdctl
& BRDDAT6
);
7502 *enableSE_low
= (brdctl
& BRDDAT5
);
7503 *enableLVD_high
= (brdctl
& BRDDAT4
);
7504 *enableLVD_low
= (brdctl
& BRDDAT3
);
7507 /*+F*************************************************************************
7509 * configure_termination
7512 * Configures the termination settings on PCI adapters that have
7513 * SEEPROMs available.
7514 *-F*************************************************************************/
7516 configure_termination(struct aic7xxx_host
*p
)
7518 int internal50_present
= 0;
7519 int internal68_present
= 0;
7520 int external_present
= 0;
7521 int eprom_present
= 0;
7522 int enableSE_low
= 0;
7523 int enableSE_high
= 0;
7524 int enableLVD_low
= 0;
7525 int enableLVD_high
= 0;
7526 unsigned char brddat
= 0;
7527 unsigned char max_target
= 0;
7528 unsigned char sxfrctl1
= aic_inb(p
, SXFRCTL1
);
7530 if (acquire_seeprom(p
))
7532 if (p
->features
& (AHC_WIDE
|AHC_TWIN
))
7536 aic_outb(p
, SEEMS
| SEECS
, SEECTL
);
7537 sxfrctl1
&= ~STPWEN
;
7539 * The termination/cable detection logic is split into three distinct
7540 * groups. Ultra2 and later controllers, 2940UW-Pro controllers, and
7541 * older 7850, 7860, 7870, 7880, and 7895 controllers. Each has its
7542 * own unique way of detecting their cables and writing the results
7545 if (p
->features
& AHC_ULTRA2
)
7548 * As long as user hasn't overridden term settings, always check the
7549 * cable detection logic
7551 if (aic7xxx_override_term
== -1)
7553 aic7xxx_ultra2_term_detect(p
, &enableSE_low
, &enableSE_high
,
7554 &enableLVD_low
, &enableLVD_high
,
7559 * If the user is overriding settings, then they have been preserved
7560 * to here as fake adapter_control entries. Parse them and allow
7561 * them to override the detected settings (if we even did detection).
7563 if (!(p
->adapter_control
& CFSEAUTOTERM
))
7565 enableSE_low
= (p
->adapter_control
& CFSTERM
);
7566 enableSE_high
= (p
->adapter_control
& CFWSTERM
);
7568 if (!(p
->adapter_control
& CFAUTOTERM
))
7570 enableLVD_low
= enableLVD_high
= (p
->adapter_control
& CFLVDSTERM
);
7574 * Now take those settings that we have and translate them into the
7575 * values that must be written into the registers.
7577 * Flash Enable = BRDDAT7
7578 * Secondary High Term Enable = BRDDAT6
7579 * Secondary Low Term Enable = BRDDAT5
7580 * LVD/Primary High Term Enable = BRDDAT4
7581 * LVD/Primary Low Term Enable = STPWEN bit in SXFRCTL1
7583 if (enableLVD_low
!= 0)
7586 p
->flags
|= AHC_TERM_ENB_LVD
;
7587 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7588 printk(KERN_INFO
"(scsi%d) LVD/Primary Low byte termination "
7589 "Enabled\n", p
->host_no
);
7592 if (enableLVD_high
!= 0)
7595 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7596 printk(KERN_INFO
"(scsi%d) LVD/Primary High byte termination "
7597 "Enabled\n", p
->host_no
);
7600 if (enableSE_low
!= 0)
7603 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7604 printk(KERN_INFO
"(scsi%d) Secondary Low byte termination "
7605 "Enabled\n", p
->host_no
);
7608 if (enableSE_high
!= 0)
7611 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7612 printk(KERN_INFO
"(scsi%d) Secondary High byte termination "
7613 "Enabled\n", p
->host_no
);
7616 else if (p
->features
& AHC_NEW_AUTOTERM
)
7619 * The 50 pin connector termination is controlled by STPWEN in the
7620 * SXFRCTL1 register. Since the Adaptec docs typically say the
7621 * controller is not allowed to be in the middle of a cable and
7622 * this is the only connection on that stub of the bus, there is
7623 * no need to even check for narrow termination, it's simply
7627 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7628 printk(KERN_INFO
"(scsi%d) Narrow channel termination Enabled\n",
7631 if (p
->adapter_control
& CFAUTOTERM
)
7633 aic2940_uwpro_wide_cable_detect(p
, &internal68_present
,
7636 printk(KERN_INFO
"(scsi%d) Cables present (Int-50 %s, Int-68 %s, "
7637 "Ext-68 %s)\n", p
->host_no
,
7639 internal68_present
? "YES" : "NO",
7640 external_present
? "YES" : "NO");
7641 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7642 printk(KERN_INFO
"(scsi%d) EEPROM %s present.\n", p
->host_no
,
7643 eprom_present
? "is" : "is not");
7644 if (internal68_present
&& external_present
)
7647 p
->flags
&= ~AHC_TERM_ENB_SE_HIGH
;
7648 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7649 printk(KERN_INFO
"(scsi%d) Wide channel termination Disabled\n",
7655 p
->flags
|= AHC_TERM_ENB_SE_HIGH
;
7656 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7657 printk(KERN_INFO
"(scsi%d) Wide channel termination Enabled\n",
7664 * The termination of the Wide channel is done more like normal
7665 * though, and the setting of this termination is done by writing
7666 * either a 0 or 1 to BRDDAT6 of the BRDDAT register
7668 if (p
->adapter_control
& CFWSTERM
)
7671 p
->flags
|= AHC_TERM_ENB_SE_HIGH
;
7672 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7673 printk(KERN_INFO
"(scsi%d) Wide channel termination Enabled\n",
7684 if (p
->adapter_control
& CFAUTOTERM
)
7686 if (p
->flags
& AHC_MOTHERBOARD
)
7688 printk(KERN_INFO
"(scsi%d) Warning - detected auto-termination\n",
7690 printk(KERN_INFO
"(scsi%d) Please verify driver detected settings "
7691 "are correct.\n", p
->host_no
);
7692 printk(KERN_INFO
"(scsi%d) If not, then please properly set the "
7693 "device termination\n", p
->host_no
);
7694 printk(KERN_INFO
"(scsi%d) in the Adaptec SCSI BIOS by hitting "
7695 "CTRL-A when prompted\n", p
->host_no
);
7696 printk(KERN_INFO
"(scsi%d) during machine bootup.\n", p
->host_no
);
7698 /* Configure auto termination. */
7700 if ( (p
->chip
& AHC_CHIPID_MASK
) >= AHC_AIC7870
)
7702 aic787x_cable_detect(p
, &internal50_present
, &internal68_present
,
7703 &external_present
, &eprom_present
);
7707 aic785x_cable_detect(p
, &internal50_present
, &external_present
,
7711 if (max_target
<= 8)
7712 internal68_present
= 0;
7716 printk(KERN_INFO
"(scsi%d) Cables present (Int-50 %s, Int-68 %s, "
7717 "Ext-68 %s)\n", p
->host_no
,
7718 internal50_present
? "YES" : "NO",
7719 internal68_present
? "YES" : "NO",
7720 external_present
? "YES" : "NO");
7724 printk(KERN_INFO
"(scsi%d) Cables present (Int-50 %s, Ext-50 %s)\n",
7726 internal50_present
? "YES" : "NO",
7727 external_present
? "YES" : "NO");
7729 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7730 printk(KERN_INFO
"(scsi%d) EEPROM %s present.\n", p
->host_no
,
7731 eprom_present
? "is" : "is not");
7734 * Now set the termination based on what we found. BRDDAT6
7735 * controls wide termination enable.
7736 * Flash Enable = BRDDAT7
7737 * SE High Term Enable = BRDDAT6
7739 if (internal50_present
&& internal68_present
&& external_present
)
7741 printk(KERN_INFO
"(scsi%d) Illegal cable configuration!! Only two\n",
7743 printk(KERN_INFO
"(scsi%d) connectors on the SCSI controller may be "
7744 "in use at a time!\n", p
->host_no
);
7746 * Force termination (low and high byte) on. This is safer than
7747 * leaving it completely off, especially since this message comes
7748 * most often from motherboard controllers that don't even have 3
7749 * connectors, but instead are failing the cable detection.
7751 internal50_present
= external_present
= 0;
7752 enableSE_high
= enableSE_low
= 1;
7755 if ((max_target
> 8) &&
7756 ((external_present
== 0) || (internal68_present
== 0)) )
7759 p
->flags
|= AHC_TERM_ENB_SE_HIGH
;
7760 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7761 printk(KERN_INFO
"(scsi%d) SE High byte termination Enabled\n",
7765 if ( ((internal50_present
? 1 : 0) +
7766 (internal68_present
? 1 : 0) +
7767 (external_present
? 1 : 0)) <= 1 )
7770 p
->flags
|= AHC_TERM_ENB_SE_LOW
;
7771 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7772 printk(KERN_INFO
"(scsi%d) SE Low byte termination Enabled\n",
7776 else /* p->adapter_control & CFAUTOTERM */
7778 if (p
->adapter_control
& CFSTERM
)
7781 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7782 printk(KERN_INFO
"(scsi%d) SE Low byte termination Enabled\n",
7786 if (p
->adapter_control
& CFWSTERM
)
7789 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7790 printk(KERN_INFO
"(scsi%d) SE High byte termination Enabled\n",
7796 aic_outb(p
, sxfrctl1
, SXFRCTL1
);
7797 write_brdctl(p
, brddat
);
7802 /*+F*************************************************************************
7807 * Detects the maximum number of SCBs for the controller and returns
7808 * the count and a mask in p (p->maxscbs, p->qcntmask).
7809 *-F*************************************************************************/
7811 detect_maxscb(struct aic7xxx_host
*p
)
7816 * It's possible that we've already done this for multichannel
7819 if (p
->scb_data
->maxhscbs
== 0)
7822 * We haven't initialized the SCB settings yet. Walk the SCBs to
7823 * determince how many there are.
7825 aic_outb(p
, 0, FREE_SCBH
);
7827 for (i
= 0; i
< AIC7XXX_MAXSCB
; i
++)
7829 aic_outb(p
, i
, SCBPTR
);
7830 aic_outb(p
, i
, SCB_CONTROL
);
7831 if (aic_inb(p
, SCB_CONTROL
) != i
)
7833 aic_outb(p
, 0, SCBPTR
);
7834 if (aic_inb(p
, SCB_CONTROL
) != 0)
7837 aic_outb(p
, i
, SCBPTR
);
7838 aic_outb(p
, 0, SCB_CONTROL
); /* Clear the control byte. */
7839 aic_outb(p
, i
+ 1, SCB_NEXT
); /* Set the next pointer. */
7840 aic_outb(p
, SCB_LIST_NULL
, SCB_TAG
); /* Make the tag invalid. */
7841 aic_outb(p
, SCB_LIST_NULL
, SCB_BUSYTARGETS
); /* no busy untagged */
7842 aic_outb(p
, SCB_LIST_NULL
, SCB_BUSYTARGETS
+1);/* targets active yet */
7843 aic_outb(p
, SCB_LIST_NULL
, SCB_BUSYTARGETS
+2);
7844 aic_outb(p
, SCB_LIST_NULL
, SCB_BUSYTARGETS
+3);
7847 /* Make sure the last SCB terminates the free list. */
7848 aic_outb(p
, i
- 1, SCBPTR
);
7849 aic_outb(p
, SCB_LIST_NULL
, SCB_NEXT
);
7851 /* Ensure we clear the first (0) SCBs control byte. */
7852 aic_outb(p
, 0, SCBPTR
);
7853 aic_outb(p
, 0, SCB_CONTROL
);
7855 p
->scb_data
->maxhscbs
= i
;
7857 * Use direct indexing instead for speed
7859 if ( i
== AIC7XXX_MAXSCB
)
7860 p
->flags
&= ~AHC_PAGESCBS
;
7865 /*+F*************************************************************************
7870 * Register a Adaptec aic7xxx chip SCSI controller with the kernel.
7871 *-F*************************************************************************/
7873 aic7xxx_register(Scsi_Host_Template
*template, struct aic7xxx_host
*p
,
7879 unsigned char term
, scsi_conf
;
7880 struct Scsi_Host
*host
;
7884 p
->scb_data
->maxscbs
= AIC7XXX_MAXSCB
;
7885 host
->can_queue
= AIC7XXX_MAXSCB
;
7886 host
->cmd_per_lun
= 3;
7887 host
->sg_tablesize
= AIC7XXX_MAX_SG
;
7888 host
->this_id
= p
->scsi_id
;
7889 host
->io_port
= p
->base
;
7890 host
->n_io_port
= 0xFF;
7891 host
->base
= p
->mbase
;
7893 if (p
->features
& AHC_WIDE
)
7897 if (p
->features
& AHC_TWIN
)
7899 host
->max_channel
= 1;
7903 p
->host_no
= host
->host_no
;
7904 host
->unique_id
= p
->instance
;
7907 p
->completeq
.head
= NULL
;
7908 p
->completeq
.tail
= NULL
;
7909 scbq_init(&p
->scb_data
->free_scbs
);
7910 scbq_init(&p
->waiting_scbs
);
7911 INIT_LIST_HEAD(&p
->aic_devs
);
7914 * We currently have no commands of any type
7917 p
->qoutfifonext
= 0;
7919 printk(KERN_INFO
"(scsi%d) <%s> found at ", p
->host_no
,
7920 board_names
[p
->board_name_index
]);
7923 case (AHC_AIC7770
|AHC_EISA
):
7924 printk("EISA slot %d\n", p
->pci_device_fn
);
7926 case (AHC_AIC7770
|AHC_VL
):
7927 printk("VLB slot %d\n", p
->pci_device_fn
);
7930 printk("PCI %d/%d/%d\n", p
->pci_bus
, PCI_SLOT(p
->pci_device_fn
),
7931 PCI_FUNC(p
->pci_device_fn
));
7934 if (p
->features
& AHC_TWIN
)
7936 printk(KERN_INFO
"(scsi%d) Twin Channel, A SCSI ID %d, B SCSI ID %d, ",
7937 p
->host_no
, p
->scsi_id
, p
->scsi_id_b
);
7945 if ((p
->flags
& AHC_MULTI_CHANNEL
) != 0)
7949 if ( (p
->flags
& (AHC_CHNLB
|AHC_CHNLC
)) != 0 )
7951 channel
= (p
->flags
& AHC_CHNLB
) ? " B" : " C";
7954 if (p
->features
& AHC_WIDE
)
7956 printk(KERN_INFO
"(scsi%d) Wide ", p
->host_no
);
7960 printk(KERN_INFO
"(scsi%d) Narrow ", p
->host_no
);
7962 printk("Channel%s, SCSI ID=%d, ", channel
, p
->scsi_id
);
7964 aic_outb(p
, 0, SEQ_FLAGS
);
7968 printk("%d/%d SCBs\n", p
->scb_data
->maxhscbs
, p
->scb_data
->maxscbs
);
7969 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7971 printk(KERN_INFO
"(scsi%d) BIOS %sabled, IO Port 0x%lx, IRQ %d\n",
7972 p
->host_no
, (p
->flags
& AHC_BIOS_ENABLED
) ? "en" : "dis",
7974 printk(KERN_INFO
"(scsi%d) IO Memory at 0x%lx, MMAP Memory at 0x%lx\n",
7975 p
->host_no
, p
->mbase
, (unsigned long)p
->maddr
);
7980 * Now that we know our instance number, we can set the flags we need to
7981 * force termination if need be.
7983 if (aic7xxx_stpwlev
!= -1)
7986 * This option only applies to PCI controllers.
7988 if ( (p
->chip
& ~AHC_CHIPID_MASK
) == AHC_PCI
)
7990 unsigned char devconfig
;
7992 pci_read_config_byte(p
->pdev
, DEVCONFIG
, &devconfig
);
7993 if ( (aic7xxx_stpwlev
>> p
->instance
) & 0x01 )
7995 devconfig
|= STPWLEVEL
;
7996 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
7997 printk("(scsi%d) Force setting STPWLEVEL bit\n", p
->host_no
);
8001 devconfig
&= ~STPWLEVEL
;
8002 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
8003 printk("(scsi%d) Force clearing STPWLEVEL bit\n", p
->host_no
);
8005 pci_write_config_byte(p
->pdev
, DEVCONFIG
, devconfig
);
8011 * That took care of devconfig and stpwlev, now for the actual termination
8014 if (aic7xxx_override_term
!= -1)
8017 * Again, this only applies to PCI controllers. We don't have problems
8018 * with the termination on 274x controllers to the best of my knowledge.
8020 if ( (p
->chip
& ~AHC_CHIPID_MASK
) == AHC_PCI
)
8022 unsigned char term_override
;
8024 term_override
= ( (aic7xxx_override_term
>> (p
->instance
* 4)) & 0x0f);
8025 p
->adapter_control
&=
8026 ~(CFSTERM
|CFWSTERM
|CFLVDSTERM
|CFAUTOTERM
|CFSEAUTOTERM
);
8027 if ( (p
->features
& AHC_ULTRA2
) && (term_override
& 0x0c) )
8029 p
->adapter_control
|= CFLVDSTERM
;
8031 if (term_override
& 0x02)
8033 p
->adapter_control
|= CFWSTERM
;
8035 if (term_override
& 0x01)
8037 p
->adapter_control
|= CFSTERM
;
8042 if ( (p
->flags
& AHC_SEEPROM_FOUND
) || (aic7xxx_override_term
!= -1) )
8044 if (p
->features
& AHC_SPIOCAP
)
8046 if ( aic_inb(p
, SPIOCAP
) & SSPIOCPS
)
8048 * Update the settings in sxfrctl1 to match the termination
8051 configure_termination(p
);
8053 else if ((p
->chip
& AHC_CHIPID_MASK
) >= AHC_AIC7870
)
8055 configure_termination(p
);
8060 * Set the SCSI Id, SXFRCTL0, SXFRCTL1, and SIMODE1, for both channels
8062 if (p
->features
& AHC_TWIN
)
8064 /* Select channel B */
8065 aic_outb(p
, aic_inb(p
, SBLKCTL
) | SELBUSB
, SBLKCTL
);
8067 if ((p
->flags
& AHC_SEEPROM_FOUND
) || (aic7xxx_override_term
!= -1))
8068 term
= (aic_inb(p
, SXFRCTL1
) & STPWEN
);
8070 term
= ((p
->flags
& AHC_TERM_ENB_B
) ? STPWEN
: 0);
8072 aic_outb(p
, p
->scsi_id_b
, SCSIID
);
8073 scsi_conf
= aic_inb(p
, SCSICONF
+ 1);
8074 aic_outb(p
, DFON
| SPIOEN
, SXFRCTL0
);
8075 aic_outb(p
, (scsi_conf
& ENSPCHK
) | aic7xxx_seltime
| term
|
8076 ENSTIMER
| ACTNEGEN
, SXFRCTL1
);
8077 aic_outb(p
, 0, SIMODE0
);
8078 aic_outb(p
, ENSELTIMO
| ENSCSIRST
| ENSCSIPERR
, SIMODE1
);
8079 aic_outb(p
, 0, SCSIRATE
);
8081 /* Select channel A */
8082 aic_outb(p
, aic_inb(p
, SBLKCTL
) & ~SELBUSB
, SBLKCTL
);
8085 if (p
->features
& AHC_ULTRA2
)
8087 aic_outb(p
, p
->scsi_id
, SCSIID_ULTRA2
);
8091 aic_outb(p
, p
->scsi_id
, SCSIID
);
8093 if ((p
->flags
& AHC_SEEPROM_FOUND
) || (aic7xxx_override_term
!= -1))
8094 term
= (aic_inb(p
, SXFRCTL1
) & STPWEN
);
8096 term
= ((p
->flags
& (AHC_TERM_ENB_A
|AHC_TERM_ENB_LVD
)) ? STPWEN
: 0);
8097 scsi_conf
= aic_inb(p
, SCSICONF
);
8098 aic_outb(p
, DFON
| SPIOEN
, SXFRCTL0
);
8099 aic_outb(p
, (scsi_conf
& ENSPCHK
) | aic7xxx_seltime
| term
|
8100 ENSTIMER
| ACTNEGEN
, SXFRCTL1
);
8101 aic_outb(p
, 0, SIMODE0
);
8103 * If we are a cardbus adapter then don't enable SCSI reset detection.
8104 * We shouldn't likely be sharing SCSI busses with someone else, and
8105 * if we don't have a cable currently plugged into the controller then
8106 * we won't have a power source for the SCSI termination, which means
8107 * we'll see infinite incoming bus resets.
8109 if(p
->flags
& AHC_NO_STPWEN
)
8110 aic_outb(p
, ENSELTIMO
| ENSCSIPERR
, SIMODE1
);
8112 aic_outb(p
, ENSELTIMO
| ENSCSIRST
| ENSCSIPERR
, SIMODE1
);
8113 aic_outb(p
, 0, SCSIRATE
);
8114 if ( p
->features
& AHC_ULTRA2
)
8115 aic_outb(p
, 0, SCSIOFFSET
);
8118 * Look at the information that board initialization or the board
8119 * BIOS has left us. In the lower four bits of each target's
8120 * scratch space any value other than 0 indicates that we should
8121 * initiate synchronous transfers. If it's zero, the user or the
8122 * BIOS has decided to disable synchronous negotiation to that
8123 * target so we don't activate the needsdtr flag.
8125 if ((p
->features
& (AHC_TWIN
|AHC_WIDE
)) == 0)
8134 if (!(aic7xxx_no_reset
))
8137 * If we reset the bus, then clear the transfer settings, else leave
8140 aic_outb(p
, 0, ULTRA_ENB
);
8141 aic_outb(p
, 0, ULTRA_ENB
+ 1);
8146 * Allocate enough hardware scbs to handle the maximum number of
8147 * concurrent transactions we can have. We have to make sure that
8148 * the allocated memory is contiguous memory. The Linux kmalloc
8149 * routine should only allocate contiguous memory, but note that
8150 * this could be a problem if kmalloc() is changed.
8154 unsigned int hscb_physaddr
;
8156 array_size
= p
->scb_data
->maxscbs
* sizeof(struct aic7xxx_hwscb
);
8157 if (p
->scb_data
->hscbs
== NULL
)
8159 /* pci_alloc_consistent enforces the alignment already and
8160 * clears the area as well.
8162 p
->scb_data
->hscbs
= pci_alloc_consistent(p
->pdev
, array_size
,
8163 &p
->scb_data
->hscbs_dma
);
8164 /* We have to use pci_free_consistent, not kfree */
8165 p
->scb_data
->hscb_kmalloc_ptr
= NULL
;
8166 p
->scb_data
->hscbs_dma_len
= array_size
;
8168 if (p
->scb_data
->hscbs
== NULL
)
8170 printk("(scsi%d) Unable to allocate hardware SCB array; "
8171 "failing detection.\n", p
->host_no
);
8172 aic_outb(p
, 0, SIMODE1
);
8177 hscb_physaddr
= p
->scb_data
->hscbs_dma
;
8178 aic_outb(p
, hscb_physaddr
& 0xFF, HSCB_ADDR
);
8179 aic_outb(p
, (hscb_physaddr
>> 8) & 0xFF, HSCB_ADDR
+ 1);
8180 aic_outb(p
, (hscb_physaddr
>> 16) & 0xFF, HSCB_ADDR
+ 2);
8181 aic_outb(p
, (hscb_physaddr
>> 24) & 0xFF, HSCB_ADDR
+ 3);
8183 /* Set up the fifo areas at the same time */
8184 p
->untagged_scbs
= pci_alloc_consistent(p
->pdev
, 3*256, &p
->fifo_dma
);
8185 if (p
->untagged_scbs
== NULL
)
8187 printk("(scsi%d) Unable to allocate hardware FIFO arrays; "
8188 "failing detection.\n", p
->host_no
);
8193 p
->qoutfifo
= p
->untagged_scbs
+ 256;
8194 p
->qinfifo
= p
->qoutfifo
+ 256;
8195 for (i
= 0; i
< 256; i
++)
8197 p
->untagged_scbs
[i
] = SCB_LIST_NULL
;
8198 p
->qinfifo
[i
] = SCB_LIST_NULL
;
8199 p
->qoutfifo
[i
] = SCB_LIST_NULL
;
8202 hscb_physaddr
= p
->fifo_dma
;
8203 aic_outb(p
, hscb_physaddr
& 0xFF, SCBID_ADDR
);
8204 aic_outb(p
, (hscb_physaddr
>> 8) & 0xFF, SCBID_ADDR
+ 1);
8205 aic_outb(p
, (hscb_physaddr
>> 16) & 0xFF, SCBID_ADDR
+ 2);
8206 aic_outb(p
, (hscb_physaddr
>> 24) & 0xFF, SCBID_ADDR
+ 3);
8209 /* The Q-FIFOs we just set up are all empty */
8210 aic_outb(p
, 0, QINPOS
);
8211 aic_outb(p
, 0, KERNEL_QINPOS
);
8212 aic_outb(p
, 0, QOUTPOS
);
8214 if(p
->features
& AHC_QUEUE_REGS
)
8216 aic_outb(p
, SCB_QSIZE_256
, QOFF_CTLSTA
);
8217 aic_outb(p
, 0, SDSCB_QOFF
);
8218 aic_outb(p
, 0, SNSCB_QOFF
);
8219 aic_outb(p
, 0, HNSCB_QOFF
);
8223 * We don't have any waiting selections or disconnected SCBs.
8225 aic_outb(p
, SCB_LIST_NULL
, WAITING_SCBH
);
8226 aic_outb(p
, SCB_LIST_NULL
, DISCONNECTED_SCBH
);
8229 * Message out buffer starts empty
8231 aic_outb(p
, MSG_NOOP
, MSG_OUT
);
8232 aic_outb(p
, MSG_NOOP
, LAST_MSG
);
8235 * Set all the other asundry items that haven't been set yet.
8236 * This includes just dumping init values to a lot of registers simply
8237 * to make sure they've been touched and are ready for use parity wise
8240 aic_outb(p
, 0, TMODE_CMDADDR
);
8241 aic_outb(p
, 0, TMODE_CMDADDR
+ 1);
8242 aic_outb(p
, 0, TMODE_CMDADDR
+ 2);
8243 aic_outb(p
, 0, TMODE_CMDADDR
+ 3);
8244 aic_outb(p
, 0, TMODE_CMDADDR_NEXT
);
8247 * Link us into the list of valid hosts
8249 p
->next
= first_aic7xxx
;
8253 * Allocate the first set of scbs for this controller. This is to stream-
8254 * line code elsewhere in the driver. If we have to check for the existence
8255 * of scbs in certain code sections, it slows things down. However, as
8256 * soon as we register the IRQ for this card, we could get an interrupt that
8257 * includes possibly the SCSI_RSTI interrupt. If we catch that interrupt
8258 * then we are likely to segfault if we don't have at least one chunk of
8259 * SCBs allocated or add checks all through the reset code to make sure
8260 * that the SCBs have been allocated which is an invalid running condition
8261 * and therefore I think it's preferable to simply pre-allocate the first
8264 aic7xxx_allocate_scb(p
);
8267 * Load the sequencer program, then re-enable the board -
8268 * resetting the AIC-7770 disables it, leaving the lights
8269 * on with nobody home.
8274 * Make sure the AUTOFLUSHDIS bit is *not* set in the SBLKCTL register
8276 aic_outb(p
, aic_inb(p
, SBLKCTL
) & ~AUTOFLUSHDIS
, SBLKCTL
);
8278 if ( (p
->chip
& AHC_CHIPID_MASK
) == AHC_AIC7770
)
8280 aic_outb(p
, ENABLE
, BCTL
); /* Enable the boards BUS drivers. */
8283 if ( !(aic7xxx_no_reset
) )
8285 if (p
->features
& AHC_TWIN
)
8287 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
8288 printk(KERN_INFO
"(scsi%d) Resetting channel B\n", p
->host_no
);
8289 aic_outb(p
, aic_inb(p
, SBLKCTL
) | SELBUSB
, SBLKCTL
);
8290 aic7xxx_reset_current_bus(p
);
8291 aic_outb(p
, aic_inb(p
, SBLKCTL
) & ~SELBUSB
, SBLKCTL
);
8293 /* Reset SCSI bus A. */
8294 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
8295 { /* In case we are a 3940, 3985, or 7895, print the right channel */
8297 if (p
->flags
& AHC_MULTI_CHANNEL
)
8300 if (p
->flags
& (AHC_CHNLB
|AHC_CHNLC
))
8301 channel
= (p
->flags
& AHC_CHNLB
) ? " B" : " C";
8303 printk(KERN_INFO
"(scsi%d) Resetting channel%s\n", p
->host_no
, channel
);
8306 aic7xxx_reset_current_bus(p
);
8313 printk(KERN_INFO
"(scsi%d) Not resetting SCSI bus. Note: Don't use "
8314 "the no_reset\n", p
->host_no
);
8315 printk(KERN_INFO
"(scsi%d) option unless you have a verifiable need "
8316 "for it.\n", p
->host_no
);
8321 * Register IRQ with the kernel. Only allow sharing IRQs with
8324 if (!(p
->chip
& AHC_PCI
))
8326 result
= (request_irq(p
->irq
, do_aic7xxx_isr
, 0, "aic7xxx", p
));
8330 result
= (request_irq(p
->irq
, do_aic7xxx_isr
, SA_SHIRQ
,
8334 result
= (request_irq(p
->irq
, do_aic7xxx_isr
, SA_INTERRUPT
| SA_SHIRQ
,
8340 printk(KERN_WARNING
"(scsi%d) Couldn't register IRQ %d, ignoring "
8341 "controller.\n", p
->host_no
, p
->irq
);
8342 aic_outb(p
, 0, SIMODE1
);
8347 if(aic_inb(p
, INTSTAT
) & INT_PEND
)
8348 printk(INFO_LEAD
"spurious interrupt during configuration, cleared.\n",
8349 p
->host_no
, -1, -1 , -1);
8350 aic7xxx_clear_intstat(p
);
8352 unpause_sequencer(p
, /* unpause_always */ TRUE
);
8357 /*+F*************************************************************************
8359 * aic7xxx_chip_reset
8362 * Perform a chip reset on the aic7xxx SCSI controller. The controller
8363 * is paused upon return.
8364 *-F*************************************************************************/
8366 aic7xxx_chip_reset(struct aic7xxx_host
*p
)
8368 unsigned char sblkctl
;
8372 * For some 274x boards, we must clear the CHIPRST bit and pause
8373 * the sequencer. For some reason, this makes the driver work.
8375 aic_outb(p
, PAUSE
| CHIPRST
, HCNTRL
);
8378 * In the future, we may call this function as a last resort for
8379 * error handling. Let's be nice and not do any unnecessary delays.
8381 wait
= 1000; /* 1 msec (1000 * 1 msec) */
8382 while (--wait
&& !(aic_inb(p
, HCNTRL
) & CHIPRSTACK
))
8384 udelay(1); /* 1 usec */
8389 sblkctl
= aic_inb(p
, SBLKCTL
) & (SELBUSB
|SELWIDE
);
8390 if (p
->chip
& AHC_PCI
)
8391 sblkctl
&= ~SELBUSB
;
8394 case 0: /* normal narrow card */
8396 case 2: /* Wide card */
8397 p
->features
|= AHC_WIDE
;
8399 case 8: /* Twin card */
8400 p
->features
|= AHC_TWIN
;
8401 p
->flags
|= AHC_MULTI_CHANNEL
;
8403 default: /* hmmm...we don't know what this is */
8404 printk(KERN_WARNING
"aic7xxx: Unsupported adapter type %d, ignoring.\n",
8405 aic_inb(p
, SBLKCTL
) & 0x0a);
8411 /*+F*************************************************************************
8416 * Allocate and initialize a host structure. Returns NULL upon error
8417 * and a pointer to a aic7xxx_host struct upon success.
8418 *-F*************************************************************************/
8419 static struct aic7xxx_host
*
8420 aic7xxx_alloc(Scsi_Host_Template
*sht
, struct aic7xxx_host
*temp
)
8422 struct aic7xxx_host
*p
= NULL
;
8423 struct Scsi_Host
*host
;
8426 * Allocate a storage area by registering us with the mid-level
8429 host
= scsi_register(sht
, sizeof(struct aic7xxx_host
));
8433 p
= (struct aic7xxx_host
*) host
->hostdata
;
8434 memset(p
, 0, sizeof(struct aic7xxx_host
));
8438 p
->scb_data
= kmalloc(sizeof(scb_data_type
), GFP_ATOMIC
);
8439 if (p
->scb_data
!= NULL
)
8441 memset(p
->scb_data
, 0, sizeof(scb_data_type
));
8442 scbq_init (&p
->scb_data
->free_scbs
);
8447 * For some reason we don't have enough memory. Free the
8448 * allocated memory for the aic7xxx_host struct, and return NULL.
8450 release_region(p
->base
, MAXREG
- MINREG
);
8451 scsi_unregister(host
);
8454 p
->host_no
= host
->host_no
;
8456 scsi_set_device(host
, &p
->pdev
->dev
);
8460 /*+F*************************************************************************
8465 * Frees and releases all resources associated with an instance of
8466 * the driver (struct aic7xxx_host *).
8467 *-F*************************************************************************/
8469 aic7xxx_free(struct aic7xxx_host
*p
)
8474 * Free the allocated hardware SCB space.
8476 if (p
->scb_data
!= NULL
)
8478 struct aic7xxx_scb_dma
*scb_dma
= NULL
;
8479 if (p
->scb_data
->hscbs
!= NULL
)
8481 pci_free_consistent(p
->pdev
, p
->scb_data
->hscbs_dma_len
,
8482 p
->scb_data
->hscbs
, p
->scb_data
->hscbs_dma
);
8483 p
->scb_data
->hscbs
= p
->scb_data
->hscb_kmalloc_ptr
= NULL
;
8486 * Free the driver SCBs. These were allocated on an as-need
8487 * basis. We allocated these in groups depending on how many
8488 * we could fit into a given amount of RAM. The tail SCB for
8489 * these allocations has a pointer to the alloced area.
8491 for (i
= 0; i
< p
->scb_data
->numscbs
; i
++)
8493 if (p
->scb_data
->scb_array
[i
]->scb_dma
!= scb_dma
)
8495 scb_dma
= p
->scb_data
->scb_array
[i
]->scb_dma
;
8496 pci_free_consistent(p
->pdev
, scb_dma
->dma_len
,
8497 (void *)((unsigned long)scb_dma
->dma_address
8498 - scb_dma
->dma_offset
),
8499 scb_dma
->dma_address
);
8501 if (p
->scb_data
->scb_array
[i
]->kmalloc_ptr
!= NULL
)
8502 kfree(p
->scb_data
->scb_array
[i
]->kmalloc_ptr
);
8503 p
->scb_data
->scb_array
[i
] = NULL
;
8507 * Free the SCB data area.
8512 pci_free_consistent(p
->pdev
, 3*256, (void *)p
->untagged_scbs
, p
->fifo_dma
);
8515 /*+F*************************************************************************
8517 * aic7xxx_load_seeprom
8520 * Load the seeprom and configure adapter and target settings.
8521 * Returns 1 if the load was successful and 0 otherwise.
8522 *-F*************************************************************************/
8524 aic7xxx_load_seeprom(struct aic7xxx_host
*p
, unsigned char *sxfrctl1
)
8526 int have_seeprom
= 0;
8527 int i
, max_targets
, mask
;
8528 unsigned char scsirate
, scsi_conf
;
8529 unsigned short scarray
[128];
8530 struct seeprom_config
*sc
= (struct seeprom_config
*) scarray
;
8532 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
8534 printk(KERN_INFO
"aic7xxx: Loading serial EEPROM...");
8538 case (AHC_AIC7770
|AHC_EISA
): /* None of these adapters have seeproms. */
8539 if (aic_inb(p
, SCSICONF
) & TERM_ENB
)
8540 p
->flags
|= AHC_TERM_ENB_A
;
8541 if ( (p
->features
& AHC_TWIN
) && (aic_inb(p
, SCSICONF
+ 1) & TERM_ENB
) )
8542 p
->flags
|= AHC_TERM_ENB_B
;
8545 case (AHC_AIC7770
|AHC_VL
):
8546 have_seeprom
= read_284x_seeprom(p
, (struct seeprom_config
*) scarray
);
8550 have_seeprom
= read_seeprom(p
, (p
->flags
& (AHC_CHNLB
|AHC_CHNLC
)),
8551 scarray
, p
->sc_size
, p
->sc_type
);
8554 if(p
->sc_type
== C46
)
8555 have_seeprom
= read_seeprom(p
, (p
->flags
& (AHC_CHNLB
|AHC_CHNLC
)),
8556 scarray
, p
->sc_size
, C56_66
);
8558 have_seeprom
= read_seeprom(p
, (p
->flags
& (AHC_CHNLB
|AHC_CHNLC
)),
8559 scarray
, p
->sc_size
, C46
);
8564 have_seeprom
= read_seeprom(p
, 4*(p
->flags
& (AHC_CHNLB
|AHC_CHNLC
)),
8565 scarray
, p
->sc_size
, p
->sc_type
);
8568 if(p
->sc_type
== C46
)
8569 have_seeprom
= read_seeprom(p
, 4*(p
->flags
& (AHC_CHNLB
|AHC_CHNLC
)),
8570 scarray
, p
->sc_size
, C56_66
);
8572 have_seeprom
= read_seeprom(p
, 4*(p
->flags
& (AHC_CHNLB
|AHC_CHNLC
)),
8573 scarray
, p
->sc_size
, C46
);
8581 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
8583 printk("\naic7xxx: No SEEPROM available.\n");
8585 p
->flags
|= AHC_NEWEEPROM_FMT
;
8586 if (aic_inb(p
, SCSISEQ
) == 0)
8588 p
->flags
|= AHC_USEDEFAULTS
;
8589 p
->flags
&= ~AHC_BIOS_ENABLED
;
8590 p
->scsi_id
= p
->scsi_id_b
= 7;
8591 *sxfrctl1
|= STPWEN
;
8592 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
8594 printk("aic7xxx: Using default values.\n");
8597 else if (aic7xxx_verbose
& VERBOSE_PROBE2
)
8599 printk("aic7xxx: Using leftover BIOS values.\n");
8601 if ( ((p
->chip
& ~AHC_CHIPID_MASK
) == AHC_PCI
) && (*sxfrctl1
& STPWEN
) )
8603 p
->flags
|= AHC_TERM_ENB_SE_LOW
| AHC_TERM_ENB_SE_HIGH
;
8604 sc
->adapter_control
&= ~CFAUTOTERM
;
8605 sc
->adapter_control
|= CFSTERM
| CFWSTERM
| CFLVDSTERM
;
8607 if (aic7xxx_extended
)
8608 p
->flags
|= (AHC_EXTEND_TRANS_A
| AHC_EXTEND_TRANS_B
);
8610 p
->flags
&= ~(AHC_EXTEND_TRANS_A
| AHC_EXTEND_TRANS_B
);
8614 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
8620 * Note things in our flags
8622 p
->flags
|= AHC_SEEPROM_FOUND
;
8625 * Update the settings in sxfrctl1 to match the termination settings.
8630 * Get our SCSI ID from the SEEPROM setting...
8632 p
->scsi_id
= (sc
->brtime_id
& CFSCSIID
);
8635 * First process the settings that are different between the VLB
8636 * and PCI adapter seeproms.
8638 if ((p
->chip
& AHC_CHIPID_MASK
) == AHC_AIC7770
)
8640 /* VLB adapter seeproms */
8641 if (sc
->bios_control
& CF284XEXTEND
)
8642 p
->flags
|= AHC_EXTEND_TRANS_A
;
8644 if (sc
->adapter_control
& CF284XSTERM
)
8646 *sxfrctl1
|= STPWEN
;
8647 p
->flags
|= AHC_TERM_ENB_SE_LOW
| AHC_TERM_ENB_SE_HIGH
;
8652 /* PCI adapter seeproms */
8653 if (sc
->bios_control
& CFEXTEND
)
8654 p
->flags
|= AHC_EXTEND_TRANS_A
;
8655 if (sc
->bios_control
& CFBIOSEN
)
8656 p
->flags
|= AHC_BIOS_ENABLED
;
8658 p
->flags
&= ~AHC_BIOS_ENABLED
;
8660 if (sc
->adapter_control
& CFSTERM
)
8662 *sxfrctl1
|= STPWEN
;
8663 p
->flags
|= AHC_TERM_ENB_SE_LOW
| AHC_TERM_ENB_SE_HIGH
;
8666 memcpy(&p
->sc
, sc
, sizeof(struct seeprom_config
));
8672 * Limit to 16 targets just in case. The 2842 for one is known to
8673 * blow the max_targets setting, future cards might also.
8675 max_targets
= ((p
->features
& (AHC_TWIN
| AHC_WIDE
)) ? 16 : 8);
8679 for (i
= 0; i
< max_targets
; i
++)
8681 if( ((p
->features
& AHC_ULTRA
) &&
8682 !(sc
->adapter_control
& CFULTRAEN
) &&
8683 (sc
->device_flags
[i
] & CFSYNCHISULTRA
)) ||
8684 (sc
->device_flags
[i
] & CFNEWULTRAFORMAT
) )
8686 p
->flags
|= AHC_NEWEEPROM_FMT
;
8692 for (i
= 0; i
< max_targets
; i
++)
8697 if (aic_inb(p
, SCSISEQ
) != 0)
8700 * OK...the BIOS set things up and left behind the settings we need.
8701 * Just make our sc->device_flags[i] entry match what the card has
8702 * set for this device.
8705 ~(aic_inb(p
, DISC_DSB
) | (aic_inb(p
, DISC_DSB
+ 1) << 8) );
8707 (aic_inb(p
, ULTRA_ENB
) | (aic_inb(p
, ULTRA_ENB
+ 1) << 8) );
8708 sc
->device_flags
[i
] = (p
->discenable
& mask
) ? CFDISC
: 0;
8709 if (aic_inb(p
, TARG_SCSIRATE
+ i
) & WIDEXFER
)
8710 sc
->device_flags
[i
] |= CFWIDEB
;
8711 if (p
->features
& AHC_ULTRA2
)
8713 if (aic_inb(p
, TARG_OFFSET
+ i
))
8715 sc
->device_flags
[i
] |= CFSYNCH
;
8716 sc
->device_flags
[i
] |= (aic_inb(p
, TARG_SCSIRATE
+ i
) & 0x07);
8717 if ( (aic_inb(p
, TARG_SCSIRATE
+ i
) & 0x18) == 0x18 )
8718 sc
->device_flags
[i
] |= CFSYNCHISULTRA
;
8723 if (aic_inb(p
, TARG_SCSIRATE
+ i
) & ~WIDEXFER
)
8725 sc
->device_flags
[i
] |= CFSYNCH
;
8726 if (p
->features
& AHC_ULTRA
)
8727 sc
->device_flags
[i
] |= ((p
->ultraenb
& mask
) ?
8728 CFSYNCHISULTRA
: 0);
8735 * Assume the BIOS has NOT been run on this card and nothing between
8736 * the card and the devices is configured yet.
8738 sc
->device_flags
[i
] = CFDISC
;
8739 if (p
->features
& AHC_WIDE
)
8740 sc
->device_flags
[i
] |= CFWIDEB
;
8741 if (p
->features
& AHC_ULTRA3
)
8742 sc
->device_flags
[i
] |= 2;
8743 else if (p
->features
& AHC_ULTRA2
)
8744 sc
->device_flags
[i
] |= 3;
8745 else if (p
->features
& AHC_ULTRA
)
8746 sc
->device_flags
[i
] |= CFSYNCHISULTRA
;
8747 sc
->device_flags
[i
] |= CFSYNCH
;
8748 aic_outb(p
, 0, TARG_SCSIRATE
+ i
);
8749 if (p
->features
& AHC_ULTRA2
)
8750 aic_outb(p
, 0, TARG_OFFSET
+ i
);
8753 if (sc
->device_flags
[i
] & CFDISC
)
8755 p
->discenable
|= mask
;
8757 if (p
->flags
& AHC_NEWEEPROM_FMT
)
8759 if ( !(p
->features
& AHC_ULTRA2
) )
8762 * I know of two different Ultra BIOSes that do this differently.
8763 * One on the Gigabyte 6BXU mb that wants flags[i] & CFXFER to
8764 * be == to 0x03 and SYNCHISULTRA to be true to mean 40MByte/s
8765 * while on the IBM Netfinity 5000 they want the same thing
8766 * to be something else, while flags[i] & CFXFER == 0x03 and
8767 * SYNCHISULTRA false should be 40MByte/s. So, we set both to
8768 * 40MByte/s and the lower speeds be damned. People will have
8769 * to select around the conversely mapped lower speeds in order
8770 * to select lower speeds on these boards.
8772 if ( (sc
->device_flags
[i
] & CFNEWULTRAFORMAT
) &&
8773 ((sc
->device_flags
[i
] & CFXFER
) == 0x03) )
8775 sc
->device_flags
[i
] &= ~CFXFER
;
8776 sc
->device_flags
[i
] |= CFSYNCHISULTRA
;
8778 if (sc
->device_flags
[i
] & CFSYNCHISULTRA
)
8780 p
->ultraenb
|= mask
;
8783 else if ( !(sc
->device_flags
[i
] & CFNEWULTRAFORMAT
) &&
8784 (p
->features
& AHC_ULTRA2
) &&
8785 (sc
->device_flags
[i
] & CFSYNCHISULTRA
) )
8787 p
->ultraenb
|= mask
;
8790 else if (sc
->adapter_control
& CFULTRAEN
)
8792 p
->ultraenb
|= mask
;
8794 if ( (sc
->device_flags
[i
] & CFSYNCH
) == 0)
8796 sc
->device_flags
[i
] &= ~CFXFER
;
8797 p
->ultraenb
&= ~mask
;
8798 p
->user
[i
].offset
= 0;
8799 p
->user
[i
].period
= 0;
8800 p
->user
[i
].options
= 0;
8804 if (p
->features
& AHC_ULTRA3
)
8806 p
->user
[i
].offset
= MAX_OFFSET_ULTRA2
;
8807 if( (sc
->device_flags
[i
] & CFXFER
) < 0x03 )
8809 scsirate
= (sc
->device_flags
[i
] & CFXFER
);
8810 p
->user
[i
].options
= MSG_EXT_PPR_OPTION_DT_CRC
;
8814 scsirate
= (sc
->device_flags
[i
] & CFXFER
) |
8815 ((p
->ultraenb
& mask
) ? 0x18 : 0x10);
8816 p
->user
[i
].options
= 0;
8818 p
->user
[i
].period
= aic7xxx_find_period(p
, scsirate
,
8819 AHC_SYNCRATE_ULTRA3
);
8821 else if (p
->features
& AHC_ULTRA2
)
8823 p
->user
[i
].offset
= MAX_OFFSET_ULTRA2
;
8824 scsirate
= (sc
->device_flags
[i
] & CFXFER
) |
8825 ((p
->ultraenb
& mask
) ? 0x18 : 0x10);
8826 p
->user
[i
].options
= 0;
8827 p
->user
[i
].period
= aic7xxx_find_period(p
, scsirate
,
8828 AHC_SYNCRATE_ULTRA2
);
8832 scsirate
= (sc
->device_flags
[i
] & CFXFER
) << 4;
8833 p
->user
[i
].options
= 0;
8834 p
->user
[i
].offset
= MAX_OFFSET_8BIT
;
8835 if (p
->features
& AHC_ULTRA
)
8838 ultraenb
= aic_inb(p
, ULTRA_ENB
) |
8839 (aic_inb(p
, ULTRA_ENB
+ 1) << 8);
8840 p
->user
[i
].period
= aic7xxx_find_period(p
, scsirate
,
8841 (p
->ultraenb
& mask
) ?
8842 AHC_SYNCRATE_ULTRA
:
8846 p
->user
[i
].period
= aic7xxx_find_period(p
, scsirate
,
8850 if ( (sc
->device_flags
[i
] & CFWIDEB
) && (p
->features
& AHC_WIDE
) )
8852 p
->user
[i
].width
= MSG_EXT_WDTR_BUS_16_BIT
;
8856 p
->user
[i
].width
= MSG_EXT_WDTR_BUS_8_BIT
;
8859 aic_outb(p
, ~(p
->discenable
& 0xFF), DISC_DSB
);
8860 aic_outb(p
, ~((p
->discenable
>> 8) & 0xFF), DISC_DSB
+ 1);
8863 * We set the p->ultraenb from the SEEPROM to begin with, but now we make
8864 * it match what is already down in the card. If we are doing a reset
8865 * on the card then this will get put back to a default state anyway.
8866 * This allows us to not have to pre-emptively negotiate when using the
8869 if (p
->features
& AHC_ULTRA
)
8870 p
->ultraenb
= aic_inb(p
, ULTRA_ENB
) | (aic_inb(p
, ULTRA_ENB
+ 1) << 8);
8873 scsi_conf
= (p
->scsi_id
& HSCSIID
);
8877 p
->adapter_control
= sc
->adapter_control
;
8878 p
->bios_control
= sc
->bios_control
;
8880 switch (p
->chip
& AHC_CHIPID_MASK
)
8885 if (p
->adapter_control
& CFBPRIMARY
)
8886 p
->flags
|= AHC_CHANNEL_B_PRIMARY
;
8891 if (sc
->adapter_control
& CFSPARITY
)
8892 scsi_conf
|= ENSPCHK
;
8896 scsi_conf
|= ENSPCHK
| RESET_SCSI
;
8900 * Only set the SCSICONF and SCSICONF + 1 registers if we are a PCI card.
8901 * The 2842 and 2742 cards already have these registers set and we don't
8902 * want to muck with them since we don't set all the bits they do.
8904 if ( (p
->chip
& ~AHC_CHIPID_MASK
) == AHC_PCI
)
8906 /* Set the host ID */
8907 aic_outb(p
, scsi_conf
, SCSICONF
);
8908 /* In case we are a wide card */
8909 aic_outb(p
, p
->scsi_id
, SCSICONF
+ 1);
8913 /*+F*************************************************************************
8915 * aic7xxx_configure_bugs
8918 * Take the card passed in and set the appropriate bug flags based upon
8919 * the card model. Also make any changes needed to device registers or
8920 * PCI registers while we are here.
8921 *-F*************************************************************************/
8923 aic7xxx_configure_bugs(struct aic7xxx_host
*p
)
8925 unsigned short tmp_word
;
8927 switch(p
->chip
& AHC_CHIPID_MASK
)
8930 p
->bugs
|= AHC_BUG_PCI_2_1_RETRY
;
8934 p
->bugs
|= AHC_BUG_TMODE_WIDEODD
| AHC_BUG_CACHETHEN
| AHC_BUG_PCI_MWI
;
8937 p
->bugs
|= AHC_BUG_TMODE_WIDEODD
| AHC_BUG_PCI_2_1_RETRY
|
8938 AHC_BUG_CACHETHEN
| AHC_BUG_PCI_MWI
;
8941 p
->bugs
|= AHC_BUG_AUTOFLUSH
| AHC_BUG_CACHETHEN
;
8944 p
->bugs
|= AHC_BUG_SCBCHAN_UPLOAD
;
8947 p
->bugs
|= AHC_BUG_TMODE_WIDEODD
| AHC_BUG_PCI_2_1_RETRY
|
8948 AHC_BUG_CACHETHEN
| AHC_BUG_PCI_MWI
;
8951 p
->bugs
|= AHC_BUG_CACHETHEN_DIS
;
8954 p
->bugs
|= AHC_BUG_SCBCHAN_UPLOAD
;
8962 * Now handle the bugs that require PCI register or card register tweaks
8964 pci_read_config_word(p
->pdev
, PCI_COMMAND
, &tmp_word
);
8965 if(p
->bugs
& AHC_BUG_PCI_MWI
)
8967 tmp_word
&= ~PCI_COMMAND_INVALIDATE
;
8971 tmp_word
|= PCI_COMMAND_INVALIDATE
;
8973 pci_write_config_word(p
->pdev
, PCI_COMMAND
, tmp_word
);
8975 if(p
->bugs
& AHC_BUG_CACHETHEN
)
8977 aic_outb(p
, aic_inb(p
, DSCOMMAND0
) & ~CACHETHEN
, DSCOMMAND0
);
8979 else if (p
->bugs
& AHC_BUG_CACHETHEN_DIS
)
8981 aic_outb(p
, aic_inb(p
, DSCOMMAND0
) | CACHETHEN
, DSCOMMAND0
);
8988 /*+F*************************************************************************
8993 * Try to detect and register an Adaptec 7770 or 7870 SCSI controller.
8995 * XXX - This should really be called aic7xxx_probe(). A sequence of
8996 * probe(), attach()/detach(), and init() makes more sense than
8997 * one do-it-all function. This may be useful when (and if) the
8998 * mid-level SCSI code is overhauled.
8999 *-F*************************************************************************/
9001 aic7xxx_detect(Scsi_Host_Template
*template)
9003 struct aic7xxx_host
*temp_p
= NULL
;
9004 struct aic7xxx_host
*current_p
= NULL
;
9005 struct aic7xxx_host
*list_p
= NULL
;
9007 #if defined(__i386__) || defined(__alpha__)
9008 ahc_flag_type flags
= 0;
9011 unsigned char sxfrctl1
;
9012 #if defined(__i386__) || defined(__alpha__)
9013 unsigned char hcntrl
, hostconf
;
9014 unsigned int slot
, base
;
9019 * If we are called as a module, the aic7xxx pointer may not be null
9020 * and it would point to our bootup string, just like on the lilo
9021 * command line. IF not NULL, then process this config string with
9025 aic7xxx_setup(aic7xxx
);
9028 template->proc_name
= "aic7xxx";
9029 template->sg_tablesize
= AIC7XXX_MAX_SG
;
9039 unsigned short vendor_id
;
9040 unsigned short device_id
;
9042 ahc_flag_type flags
;
9043 ahc_feature features
;
9044 int board_name_index
;
9045 unsigned short seeprom_size
;
9046 unsigned short seeprom_type
;
9047 } const aic_pdevs
[] = {
9048 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7810
, AHC_NONE
,
9049 AHC_FNONE
, AHC_FENONE
, 1,
9051 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7850
, AHC_AIC7850
,
9052 AHC_PAGESCBS
, AHC_AIC7850_FE
, 5,
9054 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7855
, AHC_AIC7850
,
9055 AHC_PAGESCBS
, AHC_AIC7850_FE
, 6,
9057 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7821
, AHC_AIC7860
,
9058 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9061 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_3860
, AHC_AIC7860
,
9062 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9065 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_38602
, AHC_AIC7860
,
9066 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9069 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_38602
, AHC_AIC7860
,
9070 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9073 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7860
, AHC_AIC7860
,
9074 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
| AHC_MOTHERBOARD
,
9077 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7861
, AHC_AIC7860
,
9078 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9081 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7870
, AHC_AIC7870
,
9082 AHC_PAGESCBS
| AHC_BIOS_ENABLED
| AHC_MOTHERBOARD
,
9085 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7871
, AHC_AIC7870
,
9086 AHC_PAGESCBS
| AHC_BIOS_ENABLED
, AHC_AIC7870_FE
, 10,
9088 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7872
, AHC_AIC7870
,
9089 AHC_PAGESCBS
| AHC_BIOS_ENABLED
| AHC_MULTI_CHANNEL
,
9092 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7873
, AHC_AIC7870
,
9093 AHC_PAGESCBS
| AHC_BIOS_ENABLED
| AHC_MULTI_CHANNEL
,
9096 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7874
, AHC_AIC7870
,
9097 AHC_PAGESCBS
| AHC_BIOS_ENABLED
, AHC_AIC7870_FE
, 13,
9099 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7880
, AHC_AIC7880
,
9100 AHC_PAGESCBS
| AHC_BIOS_ENABLED
| AHC_MOTHERBOARD
,
9103 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7881
, AHC_AIC7880
,
9104 AHC_PAGESCBS
| AHC_BIOS_ENABLED
, AHC_AIC7880_FE
, 15,
9106 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7882
, AHC_AIC7880
,
9107 AHC_PAGESCBS
| AHC_BIOS_ENABLED
| AHC_MULTI_CHANNEL
,
9110 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7883
, AHC_AIC7880
,
9111 AHC_PAGESCBS
| AHC_BIOS_ENABLED
| AHC_MULTI_CHANNEL
,
9114 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7884
, AHC_AIC7880
,
9115 AHC_PAGESCBS
| AHC_BIOS_ENABLED
, AHC_AIC7880_FE
, 18,
9117 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7885
, AHC_AIC7880
,
9118 AHC_PAGESCBS
| AHC_BIOS_ENABLED
, AHC_AIC7880_FE
, 18,
9120 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7886
, AHC_AIC7880
,
9121 AHC_PAGESCBS
| AHC_BIOS_ENABLED
, AHC_AIC7880_FE
, 18,
9123 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7887
, AHC_AIC7880
,
9124 AHC_PAGESCBS
| AHC_BIOS_ENABLED
, AHC_AIC7880_FE
| AHC_NEW_AUTOTERM
, 19,
9126 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7888
, AHC_AIC7880
,
9127 AHC_PAGESCBS
| AHC_BIOS_ENABLED
, AHC_AIC7880_FE
, 18,
9129 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_7895
, AHC_AIC7895
,
9130 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
| AHC_MULTI_CHANNEL
,
9133 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_7890
, AHC_AIC7890
,
9134 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9137 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_7890B
, AHC_AIC7890
,
9138 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9141 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_2930U2
, AHC_AIC7890
,
9142 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9145 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_2940U2
, AHC_AIC7890
,
9146 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9149 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_7896
, AHC_AIC7896
,
9150 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
| AHC_MULTI_CHANNEL
,
9153 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_3940U2
, AHC_AIC7896
,
9154 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
| AHC_MULTI_CHANNEL
,
9157 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_3950U2D
, AHC_AIC7896
,
9158 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
| AHC_MULTI_CHANNEL
,
9161 {PCI_VENDOR_ID_ADAPTEC
, PCI_DEVICE_ID_ADAPTEC_1480A
, AHC_AIC7860
,
9162 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
| AHC_NO_STPWEN
,
9165 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_7892A
, AHC_AIC7892
,
9166 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9169 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_7892B
, AHC_AIC7892
,
9170 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9173 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_7892D
, AHC_AIC7892
,
9174 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9177 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_7892P
, AHC_AIC7892
,
9178 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
,
9181 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_7899A
, AHC_AIC7899
,
9182 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
| AHC_MULTI_CHANNEL
,
9185 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_7899B
, AHC_AIC7899
,
9186 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
| AHC_MULTI_CHANNEL
,
9189 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_7899D
, AHC_AIC7899
,
9190 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
| AHC_MULTI_CHANNEL
,
9193 {PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_7899P
, AHC_AIC7899
,
9194 AHC_PAGESCBS
| AHC_NEWEEPROM_FMT
| AHC_BIOS_ENABLED
| AHC_MULTI_CHANNEL
,
9199 unsigned short command
;
9200 unsigned int devconfig
, i
, oldverbose
;
9201 struct pci_dev
*pdev
= NULL
;
9203 for (i
= 0; i
< NUMBER(aic_pdevs
); i
++)
9206 while ((pdev
= pci_find_device(aic_pdevs
[i
].vendor_id
,
9207 aic_pdevs
[i
].device_id
,
9209 if (pci_enable_device(pdev
))
9211 if ( i
== 0 ) /* We found one, but it's the 7810 RAID cont. */
9213 if (aic7xxx_verbose
& (VERBOSE_PROBE
|VERBOSE_PROBE2
))
9215 printk(KERN_INFO
"aic7xxx: The 7810 RAID controller is not "
9217 printk(KERN_INFO
" this driver, we are ignoring it.\n");
9220 else if ( (temp_p
= kmalloc(sizeof(struct aic7xxx_host
),
9221 GFP_ATOMIC
)) != NULL
)
9223 memset(temp_p
, 0, sizeof(struct aic7xxx_host
));
9224 temp_p
->chip
= aic_pdevs
[i
].chip
| AHC_PCI
;
9225 temp_p
->flags
= aic_pdevs
[i
].flags
;
9226 temp_p
->features
= aic_pdevs
[i
].features
;
9227 temp_p
->board_name_index
= aic_pdevs
[i
].board_name_index
;
9228 temp_p
->sc_size
= aic_pdevs
[i
].seeprom_size
;
9229 temp_p
->sc_type
= aic_pdevs
[i
].seeprom_type
;
9232 * Read sundry information from PCI BIOS.
9234 temp_p
->irq
= pdev
->irq
;
9235 temp_p
->pdev
= pdev
;
9236 temp_p
->pci_bus
= pdev
->bus
->number
;
9237 temp_p
->pci_device_fn
= pdev
->devfn
;
9238 temp_p
->base
= pci_resource_start(pdev
, 0);
9239 temp_p
->mbase
= pci_resource_start(pdev
, 1);
9241 while(current_p
&& temp_p
)
9243 if ( ((current_p
->pci_bus
== temp_p
->pci_bus
) &&
9244 (current_p
->pci_device_fn
== temp_p
->pci_device_fn
)) ||
9245 (temp_p
->base
&& (current_p
->base
== temp_p
->base
)) ||
9246 (temp_p
->mbase
&& (current_p
->mbase
== temp_p
->mbase
)) )
9248 /* duplicate PCI entry, skip it */
9252 current_p
= current_p
->next
;
9254 if(pci_request_regions(temp_p
->pdev
, "aic7xxx"))
9256 printk("aic7xxx: <%s> at PCI %d/%d/%d\n",
9257 board_names
[aic_pdevs
[i
].board_name_index
],
9259 PCI_SLOT(temp_p
->pci_device_fn
),
9260 PCI_FUNC(temp_p
->pci_device_fn
));
9261 printk("aic7xxx: I/O ports already in use, ignoring.\n");
9266 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
9267 printk("aic7xxx: <%s> at PCI %d/%d\n",
9268 board_names
[aic_pdevs
[i
].board_name_index
],
9269 PCI_SLOT(pdev
->devfn
),
9270 PCI_FUNC(pdev
->devfn
));
9271 pci_read_config_word(pdev
, PCI_COMMAND
, &command
);
9272 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
9274 printk("aic7xxx: Initial PCI_COMMAND value was 0x%x\n",
9277 #ifdef AIC7XXX_STRICT_PCI_SETUP
9278 command
|= PCI_COMMAND_SERR
| PCI_COMMAND_PARITY
|
9279 PCI_COMMAND_MASTER
| PCI_COMMAND_MEMORY
| PCI_COMMAND_IO
;
9281 command
|= PCI_COMMAND_MASTER
| PCI_COMMAND_MEMORY
| PCI_COMMAND_IO
;
9283 command
&= ~PCI_COMMAND_INVALIDATE
;
9284 if (aic7xxx_pci_parity
== 0)
9285 command
&= ~(PCI_COMMAND_SERR
| PCI_COMMAND_PARITY
);
9286 pci_write_config_word(pdev
, PCI_COMMAND
, command
);
9287 #ifdef AIC7XXX_STRICT_PCI_SETUP
9288 pci_read_config_dword(pdev
, DEVCONFIG
, &devconfig
);
9289 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
9291 printk("aic7xxx: Initial DEVCONFIG value was 0x%x\n", devconfig
);
9293 devconfig
|= 0x80000040;
9294 pci_write_config_dword(pdev
, DEVCONFIG
, devconfig
);
9295 #endif /* AIC7XXX_STRICT_PCI_SETUP */
9297 temp_p
->unpause
= INTEN
;
9298 temp_p
->pause
= temp_p
->unpause
| PAUSE
;
9299 if ( ((temp_p
->base
== 0) &&
9300 (temp_p
->mbase
== 0)) ||
9301 (temp_p
->irq
== 0) )
9303 printk("aic7xxx: <%s> at PCI %d/%d/%d\n",
9304 board_names
[aic_pdevs
[i
].board_name_index
],
9306 PCI_SLOT(temp_p
->pci_device_fn
),
9307 PCI_FUNC(temp_p
->pci_device_fn
));
9308 printk("aic7xxx: Controller disabled by BIOS, ignoring.\n");
9309 goto skip_pci_controller
;
9313 if ( !(temp_p
->base
) || !(temp_p
->flags
& AHC_MULTI_CHANNEL
) ||
9314 ((temp_p
->chip
!= (AHC_AIC7870
| AHC_PCI
)) &&
9315 (temp_p
->chip
!= (AHC_AIC7880
| AHC_PCI
))) )
9317 unsigned long page_offset
, base
;
9319 base
= temp_p
->mbase
& PAGE_MASK
;
9320 page_offset
= temp_p
->mbase
- base
;
9321 temp_p
->maddr
= ioremap_nocache(base
, page_offset
+ 256);
9324 temp_p
->maddr
+= page_offset
;
9326 * We need to check the I/O with the MMAPed address. Some machines
9327 * simply fail to work with MMAPed I/O and certain controllers.
9329 if(aic_inb(temp_p
, HCNTRL
) == 0xff)
9332 * OK.....we failed our test....go back to programmed I/O
9334 printk(KERN_INFO
"aic7xxx: <%s> at PCI %d/%d/%d\n",
9335 board_names
[aic_pdevs
[i
].board_name_index
],
9337 PCI_SLOT(temp_p
->pci_device_fn
),
9338 PCI_FUNC(temp_p
->pci_device_fn
));
9339 printk(KERN_INFO
"aic7xxx: MMAPed I/O failed, reverting to "
9340 "Programmed I/O.\n");
9341 iounmap((void *) (((unsigned long) temp_p
->maddr
) & PAGE_MASK
));
9343 if(temp_p
->base
== 0)
9345 printk("aic7xxx: <%s> at PCI %d/%d/%d\n",
9346 board_names
[aic_pdevs
[i
].board_name_index
],
9348 PCI_SLOT(temp_p
->pci_device_fn
),
9349 PCI_FUNC(temp_p
->pci_device_fn
));
9350 printk("aic7xxx: Controller disabled by BIOS, ignoring.\n");
9351 goto skip_pci_controller
;
9359 * We HAVE to make sure the first pause_sequencer() and all other
9360 * subsequent I/O that isn't PCI config space I/O takes place
9361 * after the MMAPed I/O region is configured and tested. The
9362 * problem is the PowerPC architecture that doesn't support
9363 * programmed I/O at all, so we have to have the MMAP I/O set up
9364 * for this pause to even work on those machines.
9366 pause_sequencer(temp_p
);
9369 * Clear out any pending PCI error status messages. Also set
9370 * verbose to 0 so that we don't emit strange PCI error messages
9371 * while cleaning out the current status bits.
9373 oldverbose
= aic7xxx_verbose
;
9374 aic7xxx_verbose
= 0;
9375 aic7xxx_pci_intr(temp_p
);
9376 aic7xxx_verbose
= oldverbose
;
9378 temp_p
->bios_address
= 0;
9381 * Remember how the card was setup in case there is no seeprom.
9383 if (temp_p
->features
& AHC_ULTRA2
)
9384 temp_p
->scsi_id
= aic_inb(temp_p
, SCSIID_ULTRA2
) & OID
;
9386 temp_p
->scsi_id
= aic_inb(temp_p
, SCSIID
) & OID
;
9388 * Get current termination setting
9390 sxfrctl1
= aic_inb(temp_p
, SXFRCTL1
);
9392 if (aic7xxx_chip_reset(temp_p
) == -1)
9394 goto skip_pci_controller
;
9397 * Very quickly put the term setting back into the register since
9398 * the chip reset may cause odd things to happen. This is to keep
9399 * LVD busses with lots of drives from draining the power out of
9400 * the diffsense line before we get around to running the
9401 * configure_termination() function. Also restore the STPWLEVEL
9404 aic_outb(temp_p
, sxfrctl1
, SXFRCTL1
);
9405 pci_write_config_dword(temp_p
->pdev
, DEVCONFIG
, devconfig
);
9409 * We need to set the CHNL? assignments before loading the SEEPROM
9410 * The 3940 and 3985 cards (original stuff, not any of the later
9411 * stuff) are 7870 and 7880 class chips. The Ultra2 stuff falls
9412 * under 7896 and 7897. The 7895 is in a class by itself :)
9414 switch (temp_p
->chip
& AHC_CHIPID_MASK
)
9416 case AHC_AIC7870
: /* 3840 / 3985 */
9417 case AHC_AIC7880
: /* 3840 UW / 3985 UW */
9418 if(temp_p
->flags
& AHC_MULTI_CHANNEL
)
9420 switch(PCI_SLOT(temp_p
->pci_device_fn
))
9423 temp_p
->flags
|= AHC_CHNLB
;
9426 temp_p
->flags
|= AHC_CHNLB
;
9429 temp_p
->flags
|= AHC_CHNLC
;
9437 case AHC_AIC7895
: /* 7895 */
9438 case AHC_AIC7896
: /* 7896/7 */
9439 case AHC_AIC7899
: /* 7899 */
9440 if (PCI_FUNC(pdev
->devfn
) != 0)
9442 temp_p
->flags
|= AHC_CHNLB
;
9445 * The 7895 is the only chipset that sets the SCBSIZE32 param
9446 * in the DEVCONFIG register. The Ultra2 chipsets use
9447 * the DSCOMMAND0 register instead.
9449 if ((temp_p
->chip
& AHC_CHIPID_MASK
) == AHC_AIC7895
)
9451 pci_read_config_dword(pdev
, DEVCONFIG
, &devconfig
);
9452 devconfig
|= SCBSIZE32
;
9453 pci_write_config_dword(pdev
, DEVCONFIG
, devconfig
);
9461 * Loading of the SEEPROM needs to come after we've set the flags
9462 * to indicate possible CHNLB and CHNLC assigments. Otherwise,
9463 * on 394x and 398x cards we'll end up reading the wrong settings
9464 * for channels B and C
9466 switch (temp_p
->chip
& AHC_CHIPID_MASK
)
9470 aic_outb(temp_p
, 0, SCAMCTL
);
9472 * Switch to the alt mode of the chip...
9474 aic_outb(temp_p
, aic_inb(temp_p
, SFUNCT
) | ALT_MODE
, SFUNCT
);
9476 * Set our options...the last two items set our CRC after x byte
9477 * count in target mode...
9479 aic_outb(temp_p
, AUTO_MSGOUT_DE
| DIS_MSGIN_DUALEDGE
, OPTIONMODE
);
9480 aic_outb(temp_p
, 0x00, 0x0b);
9481 aic_outb(temp_p
, 0x10, 0x0a);
9483 * switch back to normal mode...
9485 aic_outb(temp_p
, aic_inb(temp_p
, SFUNCT
) & ~ALT_MODE
, SFUNCT
);
9486 aic_outb(temp_p
, CRCVALCHKEN
| CRCENDCHKEN
| CRCREQCHKEN
|
9487 TARGCRCENDEN
| TARGCRCCNTEN
,
9489 aic_outb(temp_p
, ((aic_inb(temp_p
, DSCOMMAND0
) | USCBSIZE32
|
9490 MPARCKEN
| CIOPARCKEN
| CACHETHEN
) &
9491 ~DPARCKEN
), DSCOMMAND0
);
9492 aic7xxx_load_seeprom(temp_p
, &sxfrctl1
);
9496 aic_outb(temp_p
, 0, SCAMCTL
);
9497 aic_outb(temp_p
, (aic_inb(temp_p
, DSCOMMAND0
) |
9498 CACHETHEN
| MPARCKEN
| USCBSIZE32
|
9499 CIOPARCKEN
) & ~DPARCKEN
, DSCOMMAND0
);
9500 aic7xxx_load_seeprom(temp_p
, &sxfrctl1
);
9505 * Set the DSCOMMAND0 register on these cards different from
9506 * on the 789x cards. Also, read the SEEPROM as well.
9508 aic_outb(temp_p
, (aic_inb(temp_p
, DSCOMMAND0
) |
9509 CACHETHEN
| MPARCKEN
) & ~DPARCKEN
,
9513 aic7xxx_load_seeprom(temp_p
, &sxfrctl1
);
9517 * Check the rev of the chipset before we change DSCOMMAND0
9519 pci_read_config_dword(pdev
, DEVCONFIG
, &devconfig
);
9520 if ((devconfig
& 0xff) >= 1)
9522 aic_outb(temp_p
, (aic_inb(temp_p
, DSCOMMAND0
) |
9523 CACHETHEN
| MPARCKEN
) & ~DPARCKEN
,
9526 aic7xxx_load_seeprom(temp_p
, &sxfrctl1
);
9532 * and then we need another switch based on the type in order to
9533 * make sure the channel B primary flag is set properly on 7895
9534 * controllers....Arrrgggghhh!!! We also have to catch the fact
9535 * that when you disable the BIOS on the 7895 on the Intel DK440LX
9536 * motherboard, and possibly others, it only sets the BIOS disabled
9537 * bit on the A channel...I think I'm starting to lean towards
9540 switch(temp_p
->chip
& AHC_CHIPID_MASK
)
9546 while(current_p
!= NULL
)
9548 if ( (current_p
->pci_bus
== temp_p
->pci_bus
) &&
9549 (PCI_SLOT(current_p
->pci_device_fn
) ==
9550 PCI_SLOT(temp_p
->pci_device_fn
)) )
9552 if ( PCI_FUNC(current_p
->pci_device_fn
) == 0 )
9555 (current_p
->flags
& AHC_CHANNEL_B_PRIMARY
);
9556 temp_p
->flags
&= ~(AHC_BIOS_ENABLED
|AHC_USEDEFAULTS
);
9558 (current_p
->flags
& (AHC_BIOS_ENABLED
|AHC_USEDEFAULTS
));
9563 (temp_p
->flags
& AHC_CHANNEL_B_PRIMARY
);
9564 current_p
->flags
&= ~(AHC_BIOS_ENABLED
|AHC_USEDEFAULTS
);
9566 (temp_p
->flags
& (AHC_BIOS_ENABLED
|AHC_USEDEFAULTS
));
9569 current_p
= current_p
->next
;
9577 * We only support external SCB RAM on the 7895/6/7 chipsets.
9578 * We could support it on the 7890/1 easy enough, but I don't
9579 * know of any 7890/1 based cards that have it. I do know
9580 * of 7895/6/7 cards that have it and they work properly.
9582 switch(temp_p
->chip
& AHC_CHIPID_MASK
)
9589 pci_read_config_dword(pdev
, DEVCONFIG
, &devconfig
);
9590 if (temp_p
->features
& AHC_ULTRA2
)
9592 if ( (aic_inb(temp_p
, DSCOMMAND0
) & RAMPSM_ULTRA2
) &&
9596 aic_inb(temp_p
, DSCOMMAND0
) & ~SCBRAMSEL_ULTRA2
,
9598 temp_p
->flags
|= AHC_EXTERNAL_SRAM
;
9599 devconfig
|= EXTSCBPEN
;
9601 else if (aic_inb(temp_p
, DSCOMMAND0
) & RAMPSM_ULTRA2
)
9603 printk(KERN_INFO
"aic7xxx: <%s> at PCI %d/%d/%d\n",
9604 board_names
[aic_pdevs
[i
].board_name_index
],
9606 PCI_SLOT(temp_p
->pci_device_fn
),
9607 PCI_FUNC(temp_p
->pci_device_fn
));
9608 printk("aic7xxx: external SCB RAM detected, "
9609 "but not enabled\n");
9614 if ((devconfig
& RAMPSM
) && (aic7xxx_scbram
))
9616 devconfig
&= ~SCBRAMSEL
;
9617 devconfig
|= EXTSCBPEN
;
9618 temp_p
->flags
|= AHC_EXTERNAL_SRAM
;
9620 else if (devconfig
& RAMPSM
)
9622 printk(KERN_INFO
"aic7xxx: <%s> at PCI %d/%d/%d\n",
9623 board_names
[aic_pdevs
[i
].board_name_index
],
9625 PCI_SLOT(temp_p
->pci_device_fn
),
9626 PCI_FUNC(temp_p
->pci_device_fn
));
9627 printk("aic7xxx: external SCB RAM detected, "
9628 "but not enabled\n");
9631 pci_write_config_dword(pdev
, DEVCONFIG
, devconfig
);
9632 if ( (temp_p
->flags
& AHC_EXTERNAL_SRAM
) &&
9633 (temp_p
->flags
& AHC_CHNLB
) )
9634 aic_outb(temp_p
, 1, CCSCBBADDR
);
9639 * Take the LED out of diagnostic mode
9642 (aic_inb(temp_p
, SBLKCTL
) & ~(DIAGLEDEN
| DIAGLEDON
)),
9646 * We don't know where this is set in the SEEPROM or by the
9647 * BIOS, so we default to 100%. On Ultra2 controllers, use 75%
9650 if (temp_p
->features
& AHC_ULTRA2
)
9652 aic_outb(temp_p
, RD_DFTHRSH_MAX
| WR_DFTHRSH_MAX
, DFF_THRSH
);
9656 aic_outb(temp_p
, DFTHRSH_100
, DSPCISTATUS
);
9660 * Call our function to fixup any bugs that exist on this chipset.
9661 * This may muck with PCI settings and other device settings, so
9662 * make sure it's after all the other PCI and device register
9663 * tweaks so it can back out bad settings on specific broken cards.
9665 aic7xxx_configure_bugs(temp_p
);
9667 if ( list_p
== NULL
)
9669 list_p
= current_p
= temp_p
;
9674 while(current_p
->next
!= NULL
)
9675 current_p
= current_p
->next
;
9676 current_p
->next
= temp_p
;
9678 temp_p
->next
= NULL
;
9681 skip_pci_controller
:
9682 pci_release_regions(temp_p
->pdev
);
9684 } /* Found an Adaptec PCI device. */
9685 else /* Well, we found one, but we couldn't get any memory */
9687 printk("aic7xxx: Found <%s>\n",
9688 board_names
[aic_pdevs
[i
].board_name_index
]);
9689 printk(KERN_INFO
"aic7xxx: Unable to allocate device memory, "
9692 } /* while(pdev=....) */
9693 } /* for PCI_DEVICES */
9695 #endif /* CONFIG_PCI */
9697 #if defined(__i386__) || defined(__alpha__)
9699 * EISA/VL-bus card signature probe.
9702 while ( (slot
<= MAXSLOT
) &&
9703 !(aic7xxx_no_probe
) )
9705 base
= SLOTBASE(slot
) + MINREG
;
9707 if (!request_region(base
, MAXREG
- MINREG
, "aic7xxx"))
9710 * Some other driver has staked a
9711 * claim to this i/o region already.
9714 continue; /* back to the beginning of the for loop */
9717 type
= aic7xxx_probe(slot
, base
+ AHC_HID0
, &flags
);
9720 release_region(base
, MAXREG
- MINREG
);
9724 temp_p
= kmalloc(sizeof(struct aic7xxx_host
), GFP_ATOMIC
);
9727 printk(KERN_WARNING
"aic7xxx: Unable to allocate device space.\n");
9728 release_region(base
, MAXREG
- MINREG
);
9730 continue; /* back to the beginning of the while loop */
9734 * Pause the card preserving the IRQ type. Allow the operator
9735 * to override the IRQ trigger.
9737 if (aic7xxx_irq_trigger
== 1)
9738 hcntrl
= IRQMS
; /* Level */
9739 else if (aic7xxx_irq_trigger
== 0)
9740 hcntrl
= 0; /* Edge */
9742 hcntrl
= inb(base
+ HCNTRL
) & IRQMS
; /* Default */
9743 memset(temp_p
, 0, sizeof(struct aic7xxx_host
));
9744 temp_p
->unpause
= hcntrl
| INTEN
;
9745 temp_p
->pause
= hcntrl
| PAUSE
| INTEN
;
9746 temp_p
->base
= base
;
9749 temp_p
->pci_bus
= 0;
9750 temp_p
->pci_device_fn
= slot
;
9751 aic_outb(temp_p
, hcntrl
| PAUSE
, HCNTRL
);
9752 while( (aic_inb(temp_p
, HCNTRL
) & PAUSE
) == 0 ) ;
9753 if (aic7xxx_chip_reset(temp_p
) == -1)
9756 temp_p
->irq
= aic_inb(temp_p
, INTDEF
) & 0x0F;
9757 temp_p
->flags
|= AHC_PAGESCBS
;
9759 switch (temp_p
->irq
)
9770 printk(KERN_WARNING
"aic7xxx: Host adapter uses unsupported IRQ "
9771 "level %d, ignoring.\n", temp_p
->irq
);
9773 release_region(base
, MAXREG
- MINREG
);
9775 continue; /* back to the beginning of the while loop */
9779 * We are commited now, everything has been checked and this card
9780 * has been found, now we just set it up
9784 * Insert our new struct into the list at the end
9788 list_p
= current_p
= temp_p
;
9793 while (current_p
->next
!= NULL
)
9794 current_p
= current_p
->next
;
9795 current_p
->next
= temp_p
;
9801 temp_p
->board_name_index
= 2;
9802 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
9803 printk("aic7xxx: <%s> at EISA %d\n",
9804 board_names
[2], slot
);
9808 temp_p
->chip
= AHC_AIC7770
| AHC_EISA
;
9809 temp_p
->features
|= AHC_AIC7770_FE
;
9810 temp_p
->bios_control
= aic_inb(temp_p
, HA_274_BIOSCTRL
);
9813 * Get the primary channel information. Right now we don't
9814 * do anything with this, but someday we will be able to inform
9815 * the mid-level SCSI code which channel is primary.
9817 if (temp_p
->board_name_index
== 0)
9819 temp_p
->board_name_index
= 3;
9820 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
9821 printk("aic7xxx: <%s> at EISA %d\n",
9822 board_names
[3], slot
);
9824 if (temp_p
->bios_control
& CHANNEL_B_PRIMARY
)
9826 temp_p
->flags
|= AHC_CHANNEL_B_PRIMARY
;
9829 if ((temp_p
->bios_control
& BIOSMODE
) == BIOSDISABLED
)
9831 temp_p
->flags
&= ~AHC_BIOS_ENABLED
;
9835 temp_p
->flags
&= ~AHC_USEDEFAULTS
;
9836 temp_p
->flags
|= AHC_BIOS_ENABLED
;
9837 if ( (temp_p
->bios_control
& 0x20) == 0 )
9839 temp_p
->bios_address
= 0xcc000;
9840 temp_p
->bios_address
+= (0x4000 * (temp_p
->bios_control
& 0x07));
9844 temp_p
->bios_address
= 0xd0000;
9845 temp_p
->bios_address
+= (0x8000 * (temp_p
->bios_control
& 0x06));
9848 temp_p
->adapter_control
= aic_inb(temp_p
, SCSICONF
) << 8;
9849 temp_p
->adapter_control
|= aic_inb(temp_p
, SCSICONF
+ 1);
9850 if (temp_p
->features
& AHC_WIDE
)
9852 temp_p
->scsi_id
= temp_p
->adapter_control
& HWSCSIID
;
9853 temp_p
->scsi_id_b
= temp_p
->scsi_id
;
9857 temp_p
->scsi_id
= (temp_p
->adapter_control
>> 8) & HSCSIID
;
9858 temp_p
->scsi_id_b
= temp_p
->adapter_control
& HSCSIID
;
9860 aic7xxx_load_seeprom(temp_p
, &sxfrctl1
);
9866 temp_p
->chip
= AHC_AIC7770
| AHC_VL
;
9867 temp_p
->features
|= AHC_AIC7770_FE
;
9869 temp_p
->flags
|= AHC_BIOS_ENABLED
;
9871 temp_p
->flags
&= ~AHC_BIOS_ENABLED
;
9872 if (aic_inb(temp_p
, SCSICONF
) & TERM_ENB
)
9874 aic7xxx_load_seeprom(temp_p
, &sxfrctl1
);
9875 temp_p
->board_name_index
= 4;
9876 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
9877 printk("aic7xxx: <%s> at VLB %d\n",
9878 board_names
[2], slot
);
9879 switch( aic_inb(temp_p
, STATUS_2840
) & BIOS_SEL
)
9882 temp_p
->bios_address
= 0xe0000;
9885 temp_p
->bios_address
= 0xc8000;
9888 temp_p
->bios_address
= 0xd0000;
9891 temp_p
->bios_address
= 0xd8000;
9894 break; /* can't get here */
9898 default: /* Won't get here. */
9901 if (aic7xxx_verbose
& VERBOSE_PROBE2
)
9903 printk(KERN_INFO
"aic7xxx: BIOS %sabled, IO Port 0x%lx, IRQ %d (%s)\n",
9904 (temp_p
->flags
& AHC_USEDEFAULTS
) ? "dis" : "en", temp_p
->base
,
9906 (temp_p
->pause
& IRQMS
) ? "level sensitive" : "edge triggered");
9907 printk(KERN_INFO
"aic7xxx: Extended translation %sabled.\n",
9908 (temp_p
->flags
& AHC_EXTEND_TRANS_A
) ? "en" : "dis");
9912 * All the 7770 based chipsets have this bug
9914 temp_p
->bugs
|= AHC_BUG_TMODE_WIDEODD
;
9917 * Set the FIFO threshold and the bus off time.
9919 hostconf
= aic_inb(temp_p
, HOSTCONF
);
9920 aic_outb(temp_p
, hostconf
& DFTHRSH
, BUSSPD
);
9921 aic_outb(temp_p
, (hostconf
<< 2) & BOFF
, BUSTIME
);
9926 #endif /* defined(__i386__) || defined(__alpha__) */
9929 * Now, we re-order the probed devices by BIOS address and BUS class.
9930 * In general, we follow this algorithm to make the adapters show up
9931 * in the same order under linux that the computer finds them.
9932 * 1: All VLB/EISA cards with BIOS_ENABLED first, according to BIOS
9933 * address, going from lowest to highest.
9934 * 2: All PCI controllers with BIOS_ENABLED next, according to BIOS
9935 * address, going from lowest to highest.
9936 * 3: Remaining VLB/EISA controllers going in slot order.
9937 * 4: Remaining PCI controllers, going in PCI device order (reversable)
9941 struct aic7xxx_host
*sort_list
[4] = { NULL
, NULL
, NULL
, NULL
};
9942 struct aic7xxx_host
*vlb
, *pci
;
9943 struct aic7xxx_host
*prev_p
;
9944 struct aic7xxx_host
*p
;
9947 prev_p
= vlb
= pci
= NULL
;
9950 while (temp_p
!= NULL
)
9952 switch(temp_p
->chip
& ~AHC_CHIPID_MASK
)
9958 if (p
->flags
& AHC_BIOS_ENABLED
)
9966 temp_p
= temp_p
->next
;
9973 while ( (current_p
!= NULL
) &&
9974 (current_p
->bios_address
< temp_p
->bios_address
))
9977 current_p
= current_p
->next
;
9981 prev_p
->next
= temp_p
;
9982 temp_p
= temp_p
->next
;
9983 prev_p
->next
->next
= current_p
;
9988 temp_p
= temp_p
->next
;
9989 vlb
->next
= current_p
;
9993 if (p
->flags
& AHC_BIOS_ENABLED
)
10000 default: /* All PCI controllers fall through to default */
10004 if (p
->flags
& AHC_BIOS_ENABLED
)
10005 pci
= sort_list
[1];
10007 pci
= sort_list
[3];
10012 temp_p
= temp_p
->next
;
10019 if (!aic7xxx_reverse_scan
)
10021 while ( (current_p
!= NULL
) &&
10022 ( (PCI_SLOT(current_p
->pci_device_fn
) |
10023 (current_p
->pci_bus
<< 8)) <
10024 (PCI_SLOT(temp_p
->pci_device_fn
) |
10025 (temp_p
->pci_bus
<< 8)) ) )
10027 prev_p
= current_p
;
10028 current_p
= current_p
->next
;
10033 while ( (current_p
!= NULL
) &&
10034 ( (PCI_SLOT(current_p
->pci_device_fn
) |
10035 (current_p
->pci_bus
<< 8)) >
10036 (PCI_SLOT(temp_p
->pci_device_fn
) |
10037 (temp_p
->pci_bus
<< 8)) ) )
10039 prev_p
= current_p
;
10040 current_p
= current_p
->next
;
10044 * Are we dealing with a 7895/6/7/9 where we need to sort the
10045 * channels as well, if so, the bios_address values should
10048 if ( (current_p
) && (temp_p
->flags
& AHC_MULTI_CHANNEL
) &&
10049 (temp_p
->pci_bus
== current_p
->pci_bus
) &&
10050 (PCI_SLOT(temp_p
->pci_device_fn
) ==
10051 PCI_SLOT(current_p
->pci_device_fn
)) )
10053 if (temp_p
->flags
& AHC_CHNLB
)
10055 if ( !(temp_p
->flags
& AHC_CHANNEL_B_PRIMARY
) )
10057 prev_p
= current_p
;
10058 current_p
= current_p
->next
;
10063 if (temp_p
->flags
& AHC_CHANNEL_B_PRIMARY
)
10065 prev_p
= current_p
;
10066 current_p
= current_p
->next
;
10070 if (prev_p
!= NULL
)
10072 prev_p
->next
= temp_p
;
10073 temp_p
= temp_p
->next
;
10074 prev_p
->next
->next
= current_p
;
10079 temp_p
= temp_p
->next
;
10080 pci
->next
= current_p
;
10084 if (p
->flags
& AHC_BIOS_ENABLED
)
10085 sort_list
[1] = pci
;
10087 sort_list
[3] = pci
;
10091 } /* End of switch(temp_p->type) */
10092 } /* End of while (temp_p != NULL) */
10094 * At this point, the cards have been broken into 4 sorted lists, now
10095 * we run through the lists in order and register each controller
10101 for (i
=0; i
<NUMBER(sort_list
); i
++)
10103 temp_p
= sort_list
[i
];
10104 while(temp_p
!= NULL
)
10106 template->name
= board_names
[temp_p
->board_name_index
];
10107 p
= aic7xxx_alloc(template, temp_p
);
10110 p
->instance
= found
- left
;
10111 if (aic7xxx_register(template, p
, (--left
)) == 0)
10114 aic7xxx_release(p
->host
);
10115 scsi_unregister(p
->host
);
10117 else if (aic7xxx_dump_card
)
10119 pause_sequencer(p
);
10120 aic7xxx_print_card(p
);
10121 aic7xxx_print_scratch_ram(p
);
10122 unpause_sequencer(p
, TRUE
);
10125 current_p
= temp_p
;
10126 temp_p
= (struct aic7xxx_host
*)temp_p
->next
;
10135 /*+F*************************************************************************
10141 *-F*************************************************************************/
10143 aic7xxx_buildscb(struct aic7xxx_host
*p
, Scsi_Cmnd
*cmd
,
10144 struct aic7xxx_scb
*scb
)
10146 unsigned short mask
;
10147 struct aic7xxx_hwscb
*hscb
;
10148 struct aic_dev_data
*aic_dev
= cmd
->device
->hostdata
;
10149 struct scsi_device
*sdptr
= cmd
->device
;
10150 unsigned char tindex
= TARGET_INDEX(cmd
);
10151 struct request
*req
= cmd
->request
;
10153 mask
= (0x01 << tindex
);
10157 * Setup the control byte if we need negotiation and have not
10158 * already requested it.
10161 scb
->tag_action
= 0;
10163 if (p
->discenable
& mask
)
10165 hscb
->control
|= DISCENB
;
10166 /* We always force TEST_UNIT_READY to untagged */
10167 if (cmd
->cmnd
[0] != TEST_UNIT_READY
&& sdptr
->simple_tags
)
10169 if (req
->flags
& REQ_HARDBARRIER
)
10171 if(sdptr
->ordered_tags
)
10173 hscb
->control
|= MSG_ORDERED_Q_TAG
;
10174 scb
->tag_action
= MSG_ORDERED_Q_TAG
;
10179 hscb
->control
|= MSG_SIMPLE_Q_TAG
;
10180 scb
->tag_action
= MSG_SIMPLE_Q_TAG
;
10184 if ( !(aic_dev
->dtr_pending
) &&
10185 (aic_dev
->needppr
|| aic_dev
->needwdtr
|| aic_dev
->needsdtr
) &&
10186 (aic_dev
->flags
& DEVICE_DTR_SCANNED
) )
10188 aic_dev
->dtr_pending
= 1;
10189 scb
->tag_action
= 0;
10190 hscb
->control
&= DISCENB
;
10191 hscb
->control
|= MK_MESSAGE
;
10192 if(aic_dev
->needppr
)
10194 scb
->flags
|= SCB_MSGOUT_PPR
;
10196 else if(aic_dev
->needwdtr
)
10198 scb
->flags
|= SCB_MSGOUT_WDTR
;
10200 else if(aic_dev
->needsdtr
)
10202 scb
->flags
|= SCB_MSGOUT_SDTR
;
10204 scb
->flags
|= SCB_DTR_SCB
;
10206 hscb
->target_channel_lun
= ((cmd
->device
->id
<< 4) & 0xF0) |
10207 ((cmd
->device
->channel
& 0x01) << 3) | (cmd
->device
->lun
& 0x07);
10210 * The interpretation of request_buffer and request_bufflen
10211 * changes depending on whether or not use_sg is zero; a
10212 * non-zero use_sg indicates the number of elements in the
10213 * scatter-gather array.
10217 * XXX - this relies on the host data being stored in a
10218 * little-endian format.
10220 hscb
->SCSI_cmd_length
= cmd
->cmd_len
;
10221 memcpy(scb
->cmnd
, cmd
->cmnd
, cmd
->cmd_len
);
10222 hscb
->SCSI_cmd_pointer
= cpu_to_le32(SCB_DMA_ADDR(scb
, scb
->cmnd
));
10226 struct scatterlist
*sg
; /* Must be mid-level SCSI code scatterlist */
10229 * We must build an SG list in adapter format, as the kernel's SG list
10230 * cannot be used directly because of data field size (__alpha__)
10231 * differences and the kernel SG list uses virtual addresses where
10232 * we need physical addresses.
10236 sg
= (struct scatterlist
*)cmd
->request_buffer
;
10237 scb
->sg_length
= 0;
10238 use_sg
= pci_map_sg(p
->pdev
, sg
, cmd
->use_sg
, scsi_to_pci_dma_dir(cmd
->sc_data_direction
));
10240 * Copy the segments into the SG array. NOTE!!! - We used to
10241 * have the first entry both in the data_pointer area and the first
10242 * SG element. That has changed somewhat. We still have the first
10243 * entry in both places, but now we download the address of
10244 * scb->sg_list[1] instead of 0 to the sg pointer in the hscb.
10246 for (i
= 0; i
< use_sg
; i
++)
10248 unsigned int len
= sg_dma_len(sg
+i
);
10249 scb
->sg_list
[i
].address
= cpu_to_le32(sg_dma_address(sg
+i
));
10250 scb
->sg_list
[i
].length
= cpu_to_le32(len
);
10251 scb
->sg_length
+= len
;
10253 /* Copy the first SG into the data pointer area. */
10254 hscb
->data_pointer
= scb
->sg_list
[0].address
;
10255 hscb
->data_count
= scb
->sg_list
[0].length
;
10257 hscb
->SG_segment_count
= i
;
10258 hscb
->SG_list_pointer
= cpu_to_le32(SCB_DMA_ADDR(scb
, &scb
->sg_list
[1]));
10262 if (cmd
->request_bufflen
)
10264 unsigned int address
= pci_map_single(p
->pdev
, cmd
->request_buffer
,
10265 cmd
->request_bufflen
,
10266 scsi_to_pci_dma_dir(cmd
->sc_data_direction
));
10267 aic7xxx_mapping(cmd
) = address
;
10268 scb
->sg_list
[0].address
= cpu_to_le32(address
);
10269 scb
->sg_list
[0].length
= cpu_to_le32(cmd
->request_bufflen
);
10271 scb
->sg_length
= cmd
->request_bufflen
;
10272 hscb
->SG_segment_count
= 1;
10273 hscb
->SG_list_pointer
= cpu_to_le32(SCB_DMA_ADDR(scb
, &scb
->sg_list
[0]));
10274 hscb
->data_count
= scb
->sg_list
[0].length
;
10275 hscb
->data_pointer
= scb
->sg_list
[0].address
;
10280 scb
->sg_length
= 0;
10281 hscb
->SG_segment_count
= 0;
10282 hscb
->SG_list_pointer
= 0;
10283 hscb
->data_count
= 0;
10284 hscb
->data_pointer
= 0;
10289 /*+F*************************************************************************
10294 * Queue a SCB to the controller.
10295 *-F*************************************************************************/
10297 aic7xxx_queue(Scsi_Cmnd
*cmd
, void (*fn
)(Scsi_Cmnd
*))
10299 struct aic7xxx_host
*p
;
10300 struct aic7xxx_scb
*scb
;
10301 struct aic_dev_data
*aic_dev
;
10303 p
= (struct aic7xxx_host
*) cmd
->device
->host
->hostdata
;
10305 aic_dev
= cmd
->device
->hostdata
;
10306 #ifdef AIC7XXX_VERBOSE_DEBUGGING
10307 if (aic_dev
->active_cmds
> aic_dev
->max_q_depth
)
10309 printk(WARN_LEAD
"Commands queued exceeds queue "
10310 "depth, active=%d\n",
10311 p
->host_no
, CTL_OF_CMD(cmd
),
10312 aic_dev
->active_cmds
);
10316 scb
= scbq_remove_head(&p
->scb_data
->free_scbs
);
10319 aic7xxx_allocate_scb(p
);
10320 scb
= scbq_remove_head(&p
->scb_data
->free_scbs
);
10323 printk(WARN_LEAD
"Couldn't get a free SCB.\n", p
->host_no
,
10331 * Make sure the Scsi_Cmnd pointer is saved, the struct it points to
10332 * is set up properly, and the parity error flag is reset, then send
10333 * the SCB to the sequencer and watch the fun begin.
10335 aic7xxx_position(cmd
) = scb
->hscb
->tag
;
10336 cmd
->scsi_done
= fn
;
10337 cmd
->result
= DID_OK
;
10338 memset(cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
10339 aic7xxx_error(cmd
) = DID_OK
;
10340 aic7xxx_status(cmd
) = 0;
10341 cmd
->host_scribble
= NULL
;
10344 * Construct the SCB beforehand, so the sequencer is
10345 * paused a minimal amount of time.
10347 aic7xxx_buildscb(p
, cmd
, scb
);
10349 scb
->flags
|= SCB_ACTIVE
| SCB_WAITINGQ
;
10351 scbq_insert_tail(&p
->waiting_scbs
, scb
);
10352 aic7xxx_run_waiting_queues(p
);
10356 /*+F*************************************************************************
10358 * aic7xxx_bus_device_reset
10361 * Abort or reset the current SCSI command(s). If the scb has not
10362 * previously been aborted, then we attempt to send a BUS_DEVICE_RESET
10363 * message to the target. If the scb has previously been unsuccessfully
10364 * aborted, then we will reset the channel and have all devices renegotiate.
10365 * Returns an enumerated type that indicates the status of the operation.
10366 *-F*************************************************************************/
10368 aic7xxx_bus_device_reset(Scsi_Cmnd
*cmd
)
10370 struct aic7xxx_host
*p
;
10371 struct aic7xxx_scb
*scb
;
10372 struct aic7xxx_hwscb
*hscb
;
10374 unsigned char saved_scbptr
, lastphase
;
10375 unsigned char hscb_index
;
10377 struct aic_dev_data
*aic_dev
;
10381 printk(KERN_ERR
"aic7xxx_bus_device_reset: called with NULL cmd!\n");
10384 p
= (struct aic7xxx_host
*)cmd
->device
->host
->hostdata
;
10385 aic_dev
= AIC_DEV(cmd
);
10386 if(aic7xxx_position(cmd
) < p
->scb_data
->numscbs
)
10387 scb
= (p
->scb_data
->scb_array
[aic7xxx_position(cmd
)]);
10393 aic7xxx_isr(p
->irq
, (void *)p
, NULL
);
10394 aic7xxx_done_cmds_complete(p
);
10395 /* If the command was already complete or just completed, then we didn't
10396 * do a reset, return FAILED */
10397 if(!(scb
->flags
& SCB_ACTIVE
))
10400 pause_sequencer(p
);
10401 lastphase
= aic_inb(p
, LASTPHASE
);
10402 if (aic7xxx_verbose
& VERBOSE_RESET_PROCESS
)
10404 printk(INFO_LEAD
"Bus Device reset, scb flags 0x%x, ",
10405 p
->host_no
, CTL_OF_SCB(scb
), scb
->flags
);
10409 printk("Data-Out phase\n");
10412 printk("Data-In phase\n");
10415 printk("Command phase\n");
10418 printk("Message-Out phase\n");
10421 printk("Status phase\n");
10424 printk("Message-In phase\n");
10428 * We're not in a valid phase, so assume we're idle.
10430 printk("while idle, LASTPHASE = 0x%x\n", lastphase
);
10433 printk(INFO_LEAD
"SCSISIGI 0x%x, SEQADDR 0x%x, SSTAT0 0x%x, SSTAT1 "
10434 "0x%x\n", p
->host_no
, CTL_OF_SCB(scb
),
10435 aic_inb(p
, SCSISIGI
),
10436 aic_inb(p
, SEQADDR0
) | (aic_inb(p
, SEQADDR1
) << 8),
10437 aic_inb(p
, SSTAT0
), aic_inb(p
, SSTAT1
));
10438 printk(INFO_LEAD
"SG_CACHEPTR 0x%x, SSTAT2 0x%x, STCNT 0x%x\n", p
->host_no
,
10440 (p
->features
& AHC_ULTRA2
) ? aic_inb(p
, SG_CACHEPTR
) : 0,
10441 aic_inb(p
, SSTAT2
),
10442 aic_inb(p
, STCNT
+ 2) << 16 | aic_inb(p
, STCNT
+ 1) << 8 |
10443 aic_inb(p
, STCNT
));
10446 channel
= cmd
->device
->channel
;
10449 * Send a Device Reset Message:
10450 * The target that is holding up the bus may not be the same as
10451 * the one that triggered this timeout (different commands have
10452 * different timeout lengths). Our strategy here is to queue an
10453 * abort message to the timed out target if it is disconnected.
10454 * Otherwise, if we have an active target we stuff the message buffer
10455 * with an abort message and assert ATN in the hopes that the target
10456 * will let go of the bus and go to the mesgout phase. If this
10457 * fails, we'll get another timeout a few seconds later which will
10458 * attempt a bus reset.
10460 saved_scbptr
= aic_inb(p
, SCBPTR
);
10461 disconnected
= FALSE
;
10463 if (lastphase
!= P_BUSFREE
)
10465 if (aic_inb(p
, SCB_TAG
) >= p
->scb_data
->numscbs
)
10467 printk(WARN_LEAD
"Invalid SCB ID %d is active, "
10468 "SCB flags = 0x%x.\n", p
->host_no
,
10469 CTL_OF_CMD(cmd
), scb
->hscb
->tag
, scb
->flags
);
10470 unpause_sequencer(p
, FALSE
);
10473 if (scb
->hscb
->tag
== aic_inb(p
, SCB_TAG
))
10475 if ( (lastphase
== P_MESGOUT
) || (lastphase
== P_MESGIN
) )
10477 printk(WARN_LEAD
"Device reset, Message buffer "
10478 "in use\n", p
->host_no
, CTL_OF_SCB(scb
));
10479 unpause_sequencer(p
, FALSE
);
10483 if (aic7xxx_verbose
& VERBOSE_RESET_PROCESS
)
10484 printk(INFO_LEAD
"Device reset message in "
10485 "message buffer\n", p
->host_no
, CTL_OF_SCB(scb
));
10486 scb
->flags
|= SCB_RESET
| SCB_DEVICE_RESET
;
10487 aic7xxx_error(cmd
) = DID_RESET
;
10488 aic_dev
->flags
|= BUS_DEVICE_RESET_PENDING
;
10489 /* Send the abort message to the active SCB. */
10490 aic_outb(p
, HOST_MSG
, MSG_OUT
);
10491 aic_outb(p
, lastphase
| ATNO
, SCSISIGO
);
10492 unpause_sequencer(p
, FALSE
);
10493 spin_unlock_irq(p
->host
->host_lock
);
10495 spin_lock_irq(p
->host
->host_lock
);
10496 if(aic_dev
->flags
& BUS_DEVICE_RESET_PENDING
)
10501 } /* if (last_phase != P_BUSFREE).....indicates we are idle and can work */
10503 * Simply set the MK_MESSAGE flag and the SEQINT handler will do
10504 * the rest on a reconnect/connect.
10506 scb
->hscb
->control
|= MK_MESSAGE
;
10507 scb
->flags
|= SCB_RESET
| SCB_DEVICE_RESET
;
10508 aic_dev
->flags
|= BUS_DEVICE_RESET_PENDING
;
10510 * Check to see if the command is on the qinfifo. If it is, then we will
10511 * not need to queue the command again since the card should start it soon
10513 if (aic7xxx_search_qinfifo(p
, cmd
->device
->channel
, cmd
->device
->id
, cmd
->device
->lun
, hscb
->tag
,
10514 0, TRUE
, NULL
) == 0)
10516 disconnected
= TRUE
;
10517 if ((hscb_index
= aic7xxx_find_scb(p
, scb
)) != SCB_LIST_NULL
)
10519 unsigned char scb_control
;
10521 aic_outb(p
, hscb_index
, SCBPTR
);
10522 scb_control
= aic_inb(p
, SCB_CONTROL
);
10524 * If the DISCONNECTED bit is not set in SCB_CONTROL, then we are
10525 * actually on the waiting list, not disconnected, and we don't
10526 * need to requeue the command.
10528 disconnected
= (scb_control
& DISCONNECTED
);
10529 aic_outb(p
, scb_control
| MK_MESSAGE
, SCB_CONTROL
);
10534 * Actually requeue this SCB in case we can select the
10535 * device before it reconnects. This can result in the command
10536 * being on the qinfifo twice, but we don't care because it will
10537 * all get cleaned up if/when the reset takes place.
10539 if (aic7xxx_verbose
& VERBOSE_RESET_PROCESS
)
10540 printk(INFO_LEAD
"Queueing device reset command.\n", p
->host_no
,
10542 p
->qinfifo
[p
->qinfifonext
++] = scb
->hscb
->tag
;
10543 if (p
->features
& AHC_QUEUE_REGS
)
10544 aic_outb(p
, p
->qinfifonext
, HNSCB_QOFF
);
10546 aic_outb(p
, p
->qinfifonext
, KERNEL_QINPOS
);
10547 scb
->flags
|= SCB_QUEUED_ABORT
;
10550 aic_outb(p
, saved_scbptr
, SCBPTR
);
10551 unpause_sequencer(p
, FALSE
);
10552 spin_unlock_irq(p
->host
->host_lock
);
10554 spin_lock_irq(p
->host
->host_lock
);
10555 if(aic_dev
->flags
& BUS_DEVICE_RESET_PENDING
)
10562 /*+F*************************************************************************
10564 * aic7xxx_panic_abort
10567 * Abort the current SCSI command(s).
10568 *-F*************************************************************************/
10570 aic7xxx_panic_abort(struct aic7xxx_host
*p
, Scsi_Cmnd
*cmd
)
10573 printk("aic7xxx driver version %s/%s\n", AIC7XXX_C_VERSION
,
10575 printk("Controller type:\n %s\n", board_names
[p
->board_name_index
]);
10576 printk("p->flags=0x%lx, p->chip=0x%x, p->features=0x%x, "
10577 "sequencer %s paused\n",
10578 p
->flags
, p
->chip
, p
->features
,
10579 (aic_inb(p
, HCNTRL
) & PAUSE
) ? "is" : "isn't" );
10580 pause_sequencer(p
);
10581 disable_irq(p
->irq
);
10582 aic7xxx_print_card(p
);
10583 aic7xxx_print_scratch_ram(p
);
10584 spin_unlock_irq(p
->host
->host_lock
);
10588 /*+F*************************************************************************
10593 * Abort the current SCSI command(s).
10594 *-F*************************************************************************/
10596 aic7xxx_abort(Scsi_Cmnd
*cmd
)
10598 struct aic7xxx_scb
*scb
= NULL
;
10599 struct aic7xxx_host
*p
;
10600 int found
=0, disconnected
;
10601 unsigned char saved_hscbptr
, hscbptr
, scb_control
;
10602 struct aic_dev_data
*aic_dev
;
10606 printk(KERN_ERR
"aic7xxx_abort: called with NULL cmd!\n");
10609 p
= (struct aic7xxx_host
*)cmd
->device
->host
->hostdata
;
10610 aic_dev
= AIC_DEV(cmd
);
10611 if(aic7xxx_position(cmd
) < p
->scb_data
->numscbs
)
10612 scb
= (p
->scb_data
->scb_array
[aic7xxx_position(cmd
)]);
10616 aic7xxx_isr(p
->irq
, (void *)p
, NULL
);
10617 aic7xxx_done_cmds_complete(p
);
10618 /* If the command was already complete or just completed, then we didn't
10619 * do a reset, return FAILED */
10620 if(!(scb
->flags
& SCB_ACTIVE
))
10623 pause_sequencer(p
);
10626 * I added a new config option to the driver: "panic_on_abort" that will
10627 * cause the driver to panic and the machine to stop on the first abort
10628 * or reset call into the driver. At that point, it prints out a lot of
10629 * useful information for me which I can then use to try and debug the
10630 * problem. Simply enable the boot time prompt in order to activate this
10633 if (aic7xxx_panic_on_abort
)
10634 aic7xxx_panic_abort(p
, cmd
);
10636 if (aic7xxx_verbose
& VERBOSE_ABORT
)
10638 printk(INFO_LEAD
"Aborting scb %d, flags 0x%x, SEQADDR 0x%x, LASTPHASE "
10640 p
->host_no
, CTL_OF_SCB(scb
), scb
->hscb
->tag
, scb
->flags
,
10641 aic_inb(p
, SEQADDR0
) | (aic_inb(p
, SEQADDR1
) << 8),
10642 aic_inb(p
, LASTPHASE
));
10643 printk(INFO_LEAD
"SG_CACHEPTR 0x%x, SG_COUNT %d, SCSISIGI 0x%x\n",
10644 p
->host_no
, CTL_OF_SCB(scb
), (p
->features
& AHC_ULTRA2
) ?
10645 aic_inb(p
, SG_CACHEPTR
) : 0, aic_inb(p
, SG_COUNT
),
10646 aic_inb(p
, SCSISIGI
));
10647 printk(INFO_LEAD
"SSTAT0 0x%x, SSTAT1 0x%x, SSTAT2 0x%x\n",
10648 p
->host_no
, CTL_OF_SCB(scb
), aic_inb(p
, SSTAT0
),
10649 aic_inb(p
, SSTAT1
), aic_inb(p
, SSTAT2
));
10652 if (scb
->flags
& SCB_WAITINGQ
)
10654 if (aic7xxx_verbose
& VERBOSE_ABORT_PROCESS
)
10655 printk(INFO_LEAD
"SCB found on waiting list and "
10656 "aborted.\n", p
->host_no
, CTL_OF_SCB(scb
));
10657 scbq_remove(&p
->waiting_scbs
, scb
);
10658 scbq_remove(&aic_dev
->delayed_scbs
, scb
);
10659 aic_dev
->active_cmds
++;
10661 scb
->flags
&= ~(SCB_WAITINGQ
| SCB_ACTIVE
);
10662 scb
->flags
|= SCB_ABORT
| SCB_QUEUED_FOR_DONE
;
10667 * We just checked the waiting_q, now for the QINFIFO
10669 if ( ((found
= aic7xxx_search_qinfifo(p
, cmd
->device
->id
, cmd
->device
->channel
,
10670 cmd
->device
->lun
, scb
->hscb
->tag
, SCB_ABORT
| SCB_QUEUED_FOR_DONE
,
10671 FALSE
, NULL
)) != 0) &&
10672 (aic7xxx_verbose
& VERBOSE_ABORT_PROCESS
))
10674 printk(INFO_LEAD
"SCB found in QINFIFO and aborted.\n", p
->host_no
,
10680 * QINFIFO, waitingq, completeq done. Next, check WAITING_SCB list in card
10683 saved_hscbptr
= aic_inb(p
, SCBPTR
);
10684 if ((hscbptr
= aic7xxx_find_scb(p
, scb
)) != SCB_LIST_NULL
)
10686 aic_outb(p
, hscbptr
, SCBPTR
);
10687 scb_control
= aic_inb(p
, SCB_CONTROL
);
10688 disconnected
= scb_control
& DISCONNECTED
;
10690 * If the DISCONNECTED bit is not set in SCB_CONTROL, then we are
10691 * either currently active or on the waiting list.
10693 if(!disconnected
&& aic_inb(p
, LASTPHASE
) == P_BUSFREE
) {
10694 if (aic7xxx_verbose
& VERBOSE_ABORT_PROCESS
)
10695 printk(INFO_LEAD
"SCB found on hardware waiting"
10696 " list and aborted.\n", p
->host_no
, CTL_OF_SCB(scb
));
10697 /* If we are the only waiting command, stop the selection engine */
10698 if (aic_inb(p
, WAITING_SCBH
) == hscbptr
&& aic_inb(p
, SCB_NEXT
) ==
10701 aic_outb(p
, aic_inb(p
, SCSISEQ
) & ~ENSELO
, SCSISEQ
);
10702 aic_outb(p
, CLRSELTIMEO
, CLRSINT1
);
10703 aic_outb(p
, SCB_LIST_NULL
, WAITING_SCBH
);
10707 unsigned char prev
, next
;
10708 prev
= SCB_LIST_NULL
;
10709 next
= aic_inb(p
, WAITING_SCBH
);
10710 while(next
!= SCB_LIST_NULL
)
10712 aic_outb(p
, next
, SCBPTR
);
10713 if (next
== hscbptr
)
10715 next
= aic_inb(p
, SCB_NEXT
);
10716 if (prev
!= SCB_LIST_NULL
)
10718 aic_outb(p
, prev
, SCBPTR
);
10719 aic_outb(p
, next
, SCB_NEXT
);
10722 aic_outb(p
, next
, WAITING_SCBH
);
10723 aic_outb(p
, hscbptr
, SCBPTR
);
10724 next
= SCB_LIST_NULL
;
10729 next
= aic_inb(p
, SCB_NEXT
);
10733 aic_outb(p
, SCB_LIST_NULL
, SCB_TAG
);
10734 aic_outb(p
, 0, SCB_CONTROL
);
10735 aic7xxx_add_curscb_to_free_list(p
);
10736 scb
->flags
= SCB_ABORT
| SCB_QUEUED_FOR_DONE
;
10739 else if (!disconnected
)
10742 * We are the currently active command
10744 if((aic_inb(p
, LASTPHASE
) == P_MESGIN
) ||
10745 (aic_inb(p
, LASTPHASE
) == P_MESGOUT
))
10748 * Message buffer busy, unable to abort
10750 printk(INFO_LEAD
"message buffer busy, unable to abort.\n",
10751 p
->host_no
, CTL_OF_SCB(scb
));
10752 unpause_sequencer(p
, FALSE
);
10755 /* Fallthrough to below, set ATNO after we set SCB_CONTROL */
10757 aic_outb(p
, scb_control
| MK_MESSAGE
, SCB_CONTROL
);
10760 aic_outb(p
, HOST_MSG
, MSG_OUT
);
10761 aic_outb(p
, aic_inb(p
, SCSISIGI
) | ATNO
, SCSISIGO
);
10763 aic_outb(p
, saved_hscbptr
, SCBPTR
);
10768 * The scb isn't in the card at all and it is active and it isn't in
10769 * any of the queues, so it must be disconnected and paged out. Fall
10770 * through to the code below.
10775 p
->flags
|= AHC_ABORT_PENDING
;
10776 scb
->flags
|= SCB_QUEUED_ABORT
| SCB_ABORT
| SCB_RECOVERY_SCB
;
10777 scb
->hscb
->control
|= MK_MESSAGE
;
10780 if (aic7xxx_verbose
& VERBOSE_ABORT_PROCESS
)
10781 printk(INFO_LEAD
"SCB disconnected. Queueing Abort"
10782 " SCB.\n", p
->host_no
, CTL_OF_SCB(scb
));
10783 p
->qinfifo
[p
->qinfifonext
++] = scb
->hscb
->tag
;
10784 if (p
->features
& AHC_QUEUE_REGS
)
10785 aic_outb(p
, p
->qinfifonext
, HNSCB_QOFF
);
10787 aic_outb(p
, p
->qinfifonext
, KERNEL_QINPOS
);
10789 unpause_sequencer(p
, FALSE
);
10790 spin_unlock_irq(p
->host
->host_lock
);
10792 spin_lock_irq(p
->host
->host_lock
);
10793 if (p
->flags
& AHC_ABORT_PENDING
)
10795 if (aic7xxx_verbose
& VERBOSE_ABORT_RETURN
)
10796 printk(INFO_LEAD
"Abort never delivered, returning FAILED\n", p
->host_no
,
10798 p
->flags
&= ~AHC_ABORT_PENDING
;
10801 if (aic7xxx_verbose
& VERBOSE_ABORT_RETURN
)
10802 printk(INFO_LEAD
"Abort successful.\n", p
->host_no
, CTL_OF_CMD(cmd
));
10806 if (aic7xxx_verbose
& VERBOSE_ABORT_RETURN
)
10807 printk(INFO_LEAD
"Abort successful.\n", p
->host_no
, CTL_OF_CMD(cmd
));
10808 aic7xxx_run_done_queue(p
, TRUE
);
10809 unpause_sequencer(p
, FALSE
);
10813 /*+F*************************************************************************
10818 * Resetting the bus always succeeds - is has to, otherwise the
10819 * kernel will panic! Try a surgical technique - sending a BUS
10820 * DEVICE RESET message - on the offending target before pulling
10821 * the SCSI bus reset line.
10822 *-F*************************************************************************/
10824 aic7xxx_reset(Scsi_Cmnd
*cmd
)
10826 struct aic7xxx_scb
*scb
;
10827 struct aic7xxx_host
*p
;
10828 struct aic_dev_data
*aic_dev
;
10830 p
= (struct aic7xxx_host
*) cmd
->device
->host
->hostdata
;
10831 aic_dev
= AIC_DEV(cmd
);
10832 if(aic7xxx_position(cmd
) < p
->scb_data
->numscbs
)
10834 scb
= (p
->scb_data
->scb_array
[aic7xxx_position(cmd
)]);
10835 if (scb
->cmd
!= cmd
)
10844 * I added a new config option to the driver: "panic_on_abort" that will
10845 * cause the driver to panic and the machine to stop on the first abort
10846 * or reset call into the driver. At that point, it prints out a lot of
10847 * useful information for me which I can then use to try and debug the
10848 * problem. Simply enable the boot time prompt in order to activate this
10851 if (aic7xxx_panic_on_abort
)
10852 aic7xxx_panic_abort(p
, cmd
);
10854 pause_sequencer(p
);
10856 while((aic_inb(p
, INTSTAT
) & INT_PEND
) && !(p
->flags
& AHC_IN_ISR
))
10858 aic7xxx_isr(p
->irq
, p
, (void *)NULL
);
10859 pause_sequencer(p
);
10861 aic7xxx_done_cmds_complete(p
);
10863 if(scb
&& (scb
->cmd
== NULL
))
10866 * We just completed the command when we ran the isr stuff, so we no
10869 unpause_sequencer(p
, FALSE
);
10874 * By this point, we want to already know what we are going to do and
10875 * only have the following code implement our course of action.
10877 aic7xxx_reset_channel(p
, cmd
->device
->channel
, TRUE
);
10878 if (p
->features
& AHC_TWIN
)
10880 aic7xxx_reset_channel(p
, cmd
->device
->channel
^ 0x01, TRUE
);
10881 restart_sequencer(p
);
10883 aic_outb(p
, aic_inb(p
, SIMODE1
) & ~(ENREQINIT
|ENBUSFREE
), SIMODE1
);
10884 aic7xxx_clear_intstat(p
);
10885 p
->flags
&= ~AHC_HANDLING_REQINITS
;
10886 p
->msg_type
= MSG_TYPE_NONE
;
10889 aic7xxx_run_done_queue(p
, TRUE
);
10890 unpause_sequencer(p
, FALSE
);
10891 spin_unlock_irq(p
->host
->host_lock
);
10892 scsi_sleep(2 * HZ
);
10893 spin_lock_irq(p
->host
->host_lock
);
10897 /*+F*************************************************************************
10899 * aic7xxx_biosparam
10902 * Return the disk geometry for the given SCSI device.
10905 * This function is broken for today's really large drives and needs
10907 *-F*************************************************************************/
10909 aic7xxx_biosparam(struct scsi_device
*sdev
, struct block_device
*bdev
,
10910 sector_t capacity
, int geom
[])
10912 sector_t heads
, sectors
, cylinders
;
10914 struct aic7xxx_host
*p
;
10915 unsigned char *buf
;
10917 p
= (struct aic7xxx_host
*) sdev
->host
->hostdata
;
10918 buf
= scsi_bios_ptable(bdev
);
10922 ret
= scsi_partsize(buf
, capacity
, &geom
[2], &geom
[0], &geom
[1]);
10930 cylinders
= capacity
>> 11;
10932 if ((p
->flags
& AHC_EXTEND_TRANS_A
) && (cylinders
> 1024))
10936 cylinders
= capacity
>> 14;
10937 if(capacity
> (65535 * heads
* sectors
))
10940 cylinders
= ((unsigned int)capacity
) / (unsigned int)(heads
* sectors
);
10943 geom
[0] = (int)heads
;
10944 geom
[1] = (int)sectors
;
10945 geom
[2] = (int)cylinders
;
10950 /*+F*************************************************************************
10955 * Free the passed in Scsi_Host memory structures prior to unloading the
10957 *-F*************************************************************************/
10959 aic7xxx_release(struct Scsi_Host
*host
)
10961 struct aic7xxx_host
*p
= (struct aic7xxx_host
*) host
->hostdata
;
10962 struct aic7xxx_host
*next
, *prev
;
10965 free_irq(p
->irq
, p
);
10969 iounmap((void *) (((unsigned long) p
->maddr
) & PAGE_MASK
));
10971 #endif /* MMAPIO */
10973 release_region(p
->base
, MAXREG
- MINREG
);
10975 pci_release_regions(p
->pdev
);
10977 next
= first_aic7xxx
;
10978 while(next
!= NULL
)
10983 first_aic7xxx
= next
->next
;
10985 prev
->next
= next
->next
;
10997 /*+F*************************************************************************
10999 * aic7xxx_print_card
11002 * Print out all of the control registers on the card
11004 * NOTE: This function is not yet safe for use on the VLB and EISA
11005 * controllers, so it isn't used on those controllers at all.
11006 *-F*************************************************************************/
11008 aic7xxx_print_card(struct aic7xxx_host
*p
)
11011 static struct register_ranges
{
11015 { 0, {0,} }, /* none */
11016 {10, {0x00, 0x05, 0x08, 0x11, 0x18, 0x19, 0x1f, 0x1f, 0x60, 0x60, /*7771*/
11017 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9b, 0x9f} },
11018 { 9, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7850*/
11019 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} },
11020 { 9, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7860*/
11021 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} },
11022 {10, {0x00, 0x05, 0x08, 0x11, 0x18, 0x19, 0x1c, 0x1f, 0x60, 0x60, /*7870*/
11023 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} },
11024 {10, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1a, 0x1c, 0x1f, 0x60, 0x60, /*7880*/
11025 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} },
11026 {16, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7890*/
11027 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9f, 0x9f,
11028 0xe0, 0xf1, 0xf4, 0xf4, 0xf6, 0xf6, 0xf8, 0xf8, 0xfa, 0xfc,
11030 {12, {0x00, 0x05, 0x08, 0x11, 0x18, 0x19, 0x1b, 0x1f, 0x60, 0x60, /*7895*/
11031 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a,
11032 0x9f, 0x9f, 0xe0, 0xf1} },
11033 {16, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7896*/
11034 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9f, 0x9f,
11035 0xe0, 0xf1, 0xf4, 0xf4, 0xf6, 0xf6, 0xf8, 0xf8, 0xfa, 0xfc,
11037 {12, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7892*/
11038 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9c, 0x9f,
11039 0xe0, 0xf1, 0xf4, 0xfc} },
11040 {12, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7899*/
11041 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9c, 0x9f,
11042 0xe0, 0xf1, 0xf4, 0xfc} },
11044 chip
= p
->chip
& AHC_CHIPID_MASK
;
11046 board_names
[p
->board_name_index
]);
11047 switch(p
->chip
& ~AHC_CHIPID_MASK
)
11050 printk("VLB Slot %d.\n", p
->pci_device_fn
);
11053 printk("EISA Slot %d.\n", p
->pci_device_fn
);
11057 printk("PCI %d/%d/%d.\n", p
->pci_bus
, PCI_SLOT(p
->pci_device_fn
),
11058 PCI_FUNC(p
->pci_device_fn
));
11063 * the registers on the card....
11065 printk("Card Dump:\n");
11067 for(i
=0; i
<cards_ds
[chip
].num_ranges
; i
++)
11069 for(j
= cards_ds
[chip
].range_val
[ i
* 2 ];
11070 j
<= cards_ds
[chip
].range_val
[ i
* 2 + 1 ] ;
11073 printk("%02x:%02x ", j
, aic_inb(p
, j
));
11085 * If this was an Ultra2 controller, then we just hosed the card in terms
11086 * of the QUEUE REGS. This function is only called at init time or by
11087 * the panic_abort function, so it's safe to assume a generic init time
11091 if(p
->features
& AHC_QUEUE_REGS
)
11093 aic_outb(p
, 0, SDSCB_QOFF
);
11094 aic_outb(p
, 0, SNSCB_QOFF
);
11095 aic_outb(p
, 0, HNSCB_QOFF
);
11100 /*+F*************************************************************************
11102 * aic7xxx_print_scratch_ram
11105 * Print out the scratch RAM values on the card.
11106 *-F*************************************************************************/
11108 aic7xxx_print_scratch_ram(struct aic7xxx_host
*p
)
11113 printk("Scratch RAM:\n");
11114 for(i
= SRAM_BASE
; i
< SEQCTL
; i
++)
11116 printk("%02x:%02x ", i
, aic_inb(p
, i
));
11123 if (p
->features
& AHC_MORE_SRAM
)
11125 for(i
= TARG_OFFSET
; i
< 0x80; i
++)
11127 printk("%02x:%02x ", i
, aic_inb(p
, i
));
11139 #include "aic7xxx_old/aic7xxx_proc.c"
11141 MODULE_LICENSE("Dual BSD/GPL");
11144 static Scsi_Host_Template driver_template
= {
11145 .proc_info
= aic7xxx_proc_info
,
11146 .detect
= aic7xxx_detect
,
11147 .release
= aic7xxx_release
,
11148 .info
= aic7xxx_info
,
11149 .queuecommand
= aic7xxx_queue
,
11150 .slave_alloc
= aic7xxx_slave_alloc
,
11151 .slave_configure
= aic7xxx_slave_configure
,
11152 .slave_destroy
= aic7xxx_slave_destroy
,
11153 .bios_param
= aic7xxx_biosparam
,
11154 .eh_abort_handler
= aic7xxx_abort
,
11155 .eh_device_reset_handler
= aic7xxx_bus_device_reset
,
11156 .eh_host_reset_handler
= aic7xxx_reset
,
11159 .max_sectors
= 2048,
11161 .use_clustering
= ENABLE_CLUSTERING
,
11164 #include "scsi_module.c"
11167 * Overrides for Emacs so that we almost follow Linus's tabbing style.
11168 * Emacs will notice this stuff at the end of the file and automatically
11169 * adjust the settings for this buffer only. This must remain at the end
11171 * ---------------------------------------------------------------------------
11173 * c-indent-level: 2
11174 * c-brace-imaginary-offset: 0
11175 * c-brace-offset: -2
11176 * c-argdecl-indent: 2
11177 * c-label-offset: -2
11178 * c-continued-statement-offset: 2
11179 * c-continued-brace-offset: 0
11180 * indent-tabs-mode: nil