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/string.h>
228 #include <linux/errno.h>
229 #include <linux/kernel.h>
230 #include <linux/ioport.h>
231 #include <linux/delay.h>
232 #include <linux/pci.h>
233 #include <linux/proc_fs.h>
234 #include <linux/blkdev.h>
235 #include <linux/init.h>
236 #include <linux/spinlock.h>
237 #include <linux/smp.h>
238 #include <linux/interrupt.h>
240 #include <scsi/scsi_host.h>
241 #include "aic7xxx_old/aic7xxx.h"
243 #include "aic7xxx_old/sequencer.h"
244 #include "aic7xxx_old/scsi_message.h"
245 #include "aic7xxx_old/aic7xxx_reg.h"
246 #include <scsi/scsicam.h>
248 #include <linux/stat.h>
249 #include <linux/slab.h> /* for kmalloc() */
251 #define AIC7XXX_C_VERSION "5.2.6"
253 #define ALL_TARGETS -1
254 #define ALL_CHANNELS -1
256 #define MAX_TARGETS 16
265 #if defined(__powerpc__) || defined(__i386__) || defined(__x86_64__)
270 * You can try raising me for better performance or lowering me if you have
271 * flaky devices that go off the scsi bus when hit with too many tagged
272 * commands (like some IBM SCSI-3 LVD drives).
274 #define AIC7XXX_CMDS_PER_DEVICE 32
278 unsigned char tag_commands[16]; /* Allow for wide/twin adapters. */
279 } adapter_tag_info_t;
282 * Make a define that will tell the driver not to the default tag depth
285 #define DEFAULT_TAG_COMMANDS {0, 0, 0, 0, 0, 0, 0, 0,\
286 0, 0, 0, 0, 0, 0, 0, 0}
289 * Modify this as you see fit for your system. By setting tag_commands
290 * to 0, the driver will use it's own algorithm for determining the
291 * number of commands to use (see above). When 255, the driver will
292 * not enable tagged queueing for that particular device. When positive
293 * (> 0) and (< 255) the values in the array are used for the queue_depth.
294 * Note that the maximum value for an entry is 254, but you're insane if
295 * you try to use that many commands on one device.
297 * In this example, the first line will disable tagged queueing for all
298 * the devices on the first probed aic7xxx adapter.
300 * The second line enables tagged queueing with 4 commands/LUN for IDs
301 * (1, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
302 * driver to use its own algorithm for ID 1.
304 * The third line is the same as the first line.
306 * The fourth line disables tagged queueing for devices 0 and 3. It
307 * enables tagged queueing for the other IDs, with 16 commands/LUN
308 * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for
309 * IDs 2, 5-7, and 9-15.
313 * NOTE: The below structure is for reference only, the actual structure
314 * to modify in order to change things is found after this fake one.
316 adapter_tag_info_t aic7xxx_tag_info[] =
318 {DEFAULT_TAG_COMMANDS},
319 {{4, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 255, 4, 4, 4}},
320 {DEFAULT_TAG_COMMANDS},
321 {{255, 16, 4, 255, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}}
325 static adapter_tag_info_t aic7xxx_tag_info[] =
327 {DEFAULT_TAG_COMMANDS},
328 {DEFAULT_TAG_COMMANDS},
329 {DEFAULT_TAG_COMMANDS},
330 {DEFAULT_TAG_COMMANDS},
331 {DEFAULT_TAG_COMMANDS},
332 {DEFAULT_TAG_COMMANDS},
333 {DEFAULT_TAG_COMMANDS},
334 {DEFAULT_TAG_COMMANDS},
335 {DEFAULT_TAG_COMMANDS},
336 {DEFAULT_TAG_COMMANDS},
337 {DEFAULT_TAG_COMMANDS},
338 {DEFAULT_TAG_COMMANDS},
339 {DEFAULT_TAG_COMMANDS},
340 {DEFAULT_TAG_COMMANDS},
341 {DEFAULT_TAG_COMMANDS},
342 {DEFAULT_TAG_COMMANDS}
347 * Define an array of board names that can be indexed by aha_type.
348 * Don't forget to change this when changing the types!
350 static const char *board_names[] = {
351 "AIC-7xxx Unknown", /* AIC_NONE */
352 "Adaptec AIC-7810 Hardware RAID Controller", /* AIC_7810 */
353 "Adaptec AIC-7770 SCSI host adapter", /* AIC_7770 */
354 "Adaptec AHA-274X SCSI host adapter", /* AIC_7771 */
355 "Adaptec AHA-284X SCSI host adapter", /* AIC_284x */
356 "Adaptec AIC-7850 SCSI host adapter", /* AIC_7850 */
357 "Adaptec AIC-7855 SCSI host adapter", /* AIC_7855 */
358 "Adaptec AIC-7860 Ultra SCSI host adapter", /* AIC_7860 */
359 "Adaptec AHA-2940A Ultra SCSI host adapter", /* AIC_7861 */
360 "Adaptec AIC-7870 SCSI host adapter", /* AIC_7870 */
361 "Adaptec AHA-294X SCSI host adapter", /* AIC_7871 */
362 "Adaptec AHA-394X SCSI host adapter", /* AIC_7872 */
363 "Adaptec AHA-398X SCSI host adapter", /* AIC_7873 */
364 "Adaptec AHA-2944 SCSI host adapter", /* AIC_7874 */
365 "Adaptec AIC-7880 Ultra SCSI host adapter", /* AIC_7880 */
366 "Adaptec AHA-294X Ultra SCSI host adapter", /* AIC_7881 */
367 "Adaptec AHA-394X Ultra SCSI host adapter", /* AIC_7882 */
368 "Adaptec AHA-398X Ultra SCSI host adapter", /* AIC_7883 */
369 "Adaptec AHA-2944 Ultra SCSI host adapter", /* AIC_7884 */
370 "Adaptec AHA-2940UW Pro Ultra SCSI host adapter", /* AIC_7887 */
371 "Adaptec AIC-7895 Ultra SCSI host adapter", /* AIC_7895 */
372 "Adaptec AIC-7890/1 Ultra2 SCSI host adapter", /* AIC_7890 */
373 "Adaptec AHA-293X Ultra2 SCSI host adapter", /* AIC_7890 */
374 "Adaptec AHA-294X Ultra2 SCSI host adapter", /* AIC_7890 */
375 "Adaptec AIC-7896/7 Ultra2 SCSI host adapter", /* AIC_7896 */
376 "Adaptec AHA-394X Ultra2 SCSI host adapter", /* AIC_7897 */
377 "Adaptec AHA-395X Ultra2 SCSI host adapter", /* AIC_7897 */
378 "Adaptec PCMCIA SCSI controller", /* card bus stuff */
379 "Adaptec AIC-7892 Ultra 160/m SCSI host adapter", /* AIC_7892 */
380 "Adaptec AIC-7899 Ultra 160/m SCSI host adapter", /* AIC_7899 */
384 * There should be a specific return value for this in scsi.h, but
385 * it seems that most drivers ignore it.
387 #define DID_UNDERFLOW DID_ERROR
390 * What we want to do is have the higher level scsi driver requeue
391 * the command to us. There is no specific driver status for this
392 * condition, but the higher level scsi driver will requeue the
393 * command on a DID_BUS_BUSY error.
395 * Upon further inspection and testing, it seems that DID_BUS_BUSY
396 * will *always* retry the command. We can get into an infinite loop
397 * if this happens when we really want some sort of counter that
398 * will automatically abort/reset the command after so many retries.
399 * Using DID_ERROR will do just that. (Made by a suggestion by
400 * Doug Ledford 8/1/96)
402 #define DID_RETRY_COMMAND DID_ERROR
405 #define SCSI_RESET 0x040
412 #define SLOTBASE(x) ((x) << 12)
413 #define BASE_TO_SLOT(x) ((x) >> 12)
416 * Standard EISA Host ID regs (Offset from slot base)
418 #define AHC_HID0 0x80 /* 0,1: msb of ID2, 2-7: ID1 */
419 #define AHC_HID1 0x81 /* 0-4: ID3, 5-7: LSB ID2 */
420 #define AHC_HID2 0x82 /* product */
421 #define AHC_HID3 0x83 /* firmware revision */
424 * AIC-7770 I/O range to reserve for a card
429 #define INTDEF 0x5C /* Interrupt Definition Register */
432 * AIC-78X0 PCI registers
434 #define CLASS_PROGIF_REVID 0x08
435 #define DEVREVID 0x000000FFul
436 #define PROGINFC 0x0000FF00ul
437 #define SUBCLASS 0x00FF0000ul
438 #define BASECLASS 0xFF000000ul
440 #define CSIZE_LATTIME 0x0C
441 #define CACHESIZE 0x0000003Ful /* only 5 bits */
442 #define LATTIME 0x0000FF00ul
444 #define DEVCONFIG 0x40
445 #define SCBSIZE32 0x00010000ul /* aic789X only */
446 #define MPORTMODE 0x00000400ul /* aic7870 only */
447 #define RAMPSM 0x00000200ul /* aic7870 only */
448 #define RAMPSM_ULTRA2 0x00000004
449 #define VOLSENSE 0x00000100ul
450 #define SCBRAMSEL 0x00000080ul
451 #define SCBRAMSEL_ULTRA2 0x00000008
452 #define MRDCEN 0x00000040ul
453 #define EXTSCBTIME 0x00000020ul /* aic7870 only */
454 #define EXTSCBPEN 0x00000010ul /* aic7870 only */
455 #define BERREN 0x00000008ul
456 #define DACEN 0x00000004ul
457 #define STPWLEVEL 0x00000002ul
458 #define DIFACTNEGEN 0x00000001ul /* aic7870 only */
460 #define SCAMCTL 0x1a /* Ultra2 only */
461 #define CCSCBBADDR 0xf0 /* aic7895/6/7 */
464 * Define the different types of SEEPROMs on aic7xxx adapters
465 * and make it also represent the address size used in accessing
466 * its registers. The 93C46 chips have 1024 bits organized into
467 * 64 16-bit words, while the 93C56 chips have 2048 bits organized
468 * into 128 16-bit words. The C46 chips use 6 bits to address
469 * each word, while the C56 and C66 (4096 bits) use 8 bits to
472 typedef enum {C46 = 6, C56_66 = 8} seeprom_chip_type;
476 * Define the format of the SEEPROM registers (16 bits).
479 struct seeprom_config {
482 * SCSI ID Configuration Flags
484 #define CFXFER 0x0007 /* synchronous transfer rate */
485 #define CFSYNCH 0x0008 /* enable synchronous transfer */
486 #define CFDISC 0x0010 /* enable disconnection */
487 #define CFWIDEB 0x0020 /* wide bus device (wide card) */
488 #define CFSYNCHISULTRA 0x0040 /* CFSYNC is an ultra offset */
489 #define CFNEWULTRAFORMAT 0x0080 /* Use the Ultra2 SEEPROM format */
490 #define CFSTART 0x0100 /* send start unit SCSI command */
491 #define CFINCBIOS 0x0200 /* include in BIOS scan */
492 #define CFRNFOUND 0x0400 /* report even if not found */
493 #define CFMULTILUN 0x0800 /* probe mult luns in BIOS scan */
494 #define CFWBCACHEYES 0x4000 /* Enable W-Behind Cache on drive */
495 #define CFWBCACHENC 0xc000 /* Don't change W-Behind Cache */
497 unsigned short device_flags[16]; /* words 0-15 */
502 #define CFSUPREM 0x0001 /* support all removable drives */
503 #define CFSUPREMB 0x0002 /* support removable drives for boot only */
504 #define CFBIOSEN 0x0004 /* BIOS enabled */
506 #define CFSM2DRV 0x0010 /* support more than two drives */
507 #define CF284XEXTEND 0x0020 /* extended translation (284x cards) */
509 #define CFEXTEND 0x0080 /* extended translation enabled */
511 unsigned short bios_control; /* word 16 */
514 * Host Adapter Control Bits
516 #define CFAUTOTERM 0x0001 /* Perform Auto termination */
517 #define CFULTRAEN 0x0002 /* Ultra SCSI speed enable (Ultra cards) */
518 #define CF284XSELTO 0x0003 /* Selection timeout (284x cards) */
519 #define CF284XFIFO 0x000C /* FIFO Threshold (284x cards) */
520 #define CFSTERM 0x0004 /* SCSI low byte termination */
521 #define CFWSTERM 0x0008 /* SCSI high byte termination (wide card) */
522 #define CFSPARITY 0x0010 /* SCSI parity */
523 #define CF284XSTERM 0x0020 /* SCSI low byte termination (284x cards) */
524 #define CFRESETB 0x0040 /* reset SCSI bus at boot */
525 #define CFBPRIMARY 0x0100 /* Channel B primary on 7895 chipsets */
526 #define CFSEAUTOTERM 0x0400 /* aic7890 Perform SE Auto Term */
527 #define CFLVDSTERM 0x0800 /* aic7890 LVD Termination */
529 unsigned short adapter_control; /* word 17 */
532 * Bus Release, Host Adapter ID
534 #define CFSCSIID 0x000F /* host adapter SCSI ID */
536 #define CFBRTIME 0xFF00 /* bus release time */
537 unsigned short brtime_id; /* word 18 */
542 #define CFMAXTARG 0x00FF /* maximum targets */
544 unsigned short max_targets; /* word 19 */
546 unsigned short res_1[11]; /* words 20-30 */
547 unsigned short checksum; /* word 31 */
550 #define SELBUS_MASK 0x0a
551 #define SELNARROW 0x00
553 #define SINGLE_BUS 0x00
555 #define SCB_TARGET(scb) \
556 (((scb)->hscb->target_channel_lun & TID) >> 4)
557 #define SCB_LUN(scb) \
558 ((scb)->hscb->target_channel_lun & LID)
559 #define SCB_IS_SCSIBUS_B(scb) \
560 (((scb)->hscb->target_channel_lun & SELBUSB) != 0)
563 * If an error occurs during a data transfer phase, run the command
564 * to completion - it's easier that way - making a note of the error
565 * condition in this location. This then will modify a DID_OK status
566 * into an appropriate error for the higher-level SCSI code.
568 #define aic7xxx_error(cmd) ((cmd)->SCp.Status)
571 * Keep track of the targets returned status.
573 #define aic7xxx_status(cmd) ((cmd)->SCp.sent_command)
576 * The position of the SCSI commands scb within the scb array.
578 #define aic7xxx_position(cmd) ((cmd)->SCp.have_data_in)
581 * The stored DMA mapping for single-buffer data transfers.
583 #define aic7xxx_mapping(cmd) ((cmd)->SCp.phase)
586 * Get out private data area from a scsi cmd pointer
588 #define AIC_DEV(cmd) ((struct aic_dev_data *)(cmd)->device->hostdata)
591 * So we can keep track of our host structs
593 static struct aic7xxx_host *first_aic7xxx = NULL;
596 * As of Linux 2.1, the mid-level SCSI code uses virtual addresses
597 * in the scatter-gather lists. We need to convert the virtual
598 * addresses to physical addresses.
600 struct hw_scatterlist {
601 unsigned int address;
606 * Maximum number of SG segments these cards can support.
608 #define AIC7XXX_MAX_SG 128
611 * The maximum number of SCBs we could have for ANY type
612 * of card. DON'T FORGET TO CHANGE THE SCB MASK IN THE
613 * SEQUENCER CODE IF THIS IS MODIFIED!
615 #define AIC7XXX_MAXSCB 255
618 struct aic7xxx_hwscb {
619 /* ------------ Begin hardware supported fields ---------------- */
620 /* 0*/ unsigned char control;
621 /* 1*/ unsigned char target_channel_lun; /* 4/1/3 bits */
622 /* 2*/ unsigned char target_status;
623 /* 3*/ unsigned char SG_segment_count;
624 /* 4*/ unsigned int SG_list_pointer;
625 /* 8*/ unsigned char residual_SG_segment_count;
626 /* 9*/ unsigned char residual_data_count[3];
627 /*12*/ unsigned int data_pointer;
628 /*16*/ unsigned int data_count;
629 /*20*/ unsigned int SCSI_cmd_pointer;
630 /*24*/ unsigned char SCSI_cmd_length;
631 /*25*/ unsigned char tag; /* Index into our kernel SCB array.
632 * Also used as the tag for tagged I/O
634 #define SCB_PIO_TRANSFER_SIZE 26 /* amount we need to upload/download
635 * via PIO to initialize a transaction.
637 /*26*/ unsigned char next; /* Used to thread SCBs awaiting selection
638 * or disconnected down in the sequencer.
640 /*27*/ unsigned char prev;
641 /*28*/ unsigned int pad; /*
642 * Unused by the kernel, but we require
643 * the padding so that the array of
644 * hardware SCBs is aligned on 32 byte
645 * boundaries so the sequencer can index
651 SCB_DTR_SCB = 0x0001,
652 SCB_WAITINGQ = 0x0002,
656 SCB_DEVICE_RESET = 0x0020,
658 SCB_RECOVERY_SCB = 0x0080,
659 SCB_MSGOUT_PPR = 0x0100,
660 SCB_MSGOUT_SENT = 0x0200,
661 SCB_MSGOUT_SDTR = 0x0400,
662 SCB_MSGOUT_WDTR = 0x0800,
663 SCB_MSGOUT_BITS = SCB_MSGOUT_PPR |
667 SCB_QUEUED_ABORT = 0x1000,
668 SCB_QUEUED_FOR_DONE = 0x2000,
669 SCB_WAS_BUSY = 0x4000,
670 SCB_QUEUE_FULL = 0x8000
674 AHC_FNONE = 0x00000000,
675 AHC_PAGESCBS = 0x00000001,
676 AHC_CHANNEL_B_PRIMARY = 0x00000002,
677 AHC_USEDEFAULTS = 0x00000004,
678 AHC_INDIRECT_PAGING = 0x00000008,
679 AHC_CHNLB = 0x00000020,
680 AHC_CHNLC = 0x00000040,
681 AHC_EXTEND_TRANS_A = 0x00000100,
682 AHC_EXTEND_TRANS_B = 0x00000200,
683 AHC_TERM_ENB_A = 0x00000400,
684 AHC_TERM_ENB_SE_LOW = 0x00000400,
685 AHC_TERM_ENB_B = 0x00000800,
686 AHC_TERM_ENB_SE_HIGH = 0x00000800,
687 AHC_HANDLING_REQINITS = 0x00001000,
688 AHC_TARGETMODE = 0x00002000,
689 AHC_NEWEEPROM_FMT = 0x00004000,
691 * Here ends the FreeBSD defined flags and here begins the linux defined
692 * flags. NOTE: I did not preserve the old flag name during this change
693 * specifically to force me to evaluate what flags were being used properly
694 * and what flags weren't. This way, I could clean up the flag usage on
695 * a use by use basis. Doug Ledford
697 AHC_MOTHERBOARD = 0x00020000,
698 AHC_NO_STPWEN = 0x00040000,
699 AHC_RESET_DELAY = 0x00080000,
700 AHC_A_SCANNED = 0x00100000,
701 AHC_B_SCANNED = 0x00200000,
702 AHC_MULTI_CHANNEL = 0x00400000,
703 AHC_BIOS_ENABLED = 0x00800000,
704 AHC_SEEPROM_FOUND = 0x01000000,
705 AHC_TERM_ENB_LVD = 0x02000000,
706 AHC_ABORT_PENDING = 0x04000000,
707 AHC_RESET_PENDING = 0x08000000,
708 #define AHC_IN_ISR_BIT 28
709 AHC_IN_ISR = 0x10000000,
710 AHC_IN_ABORT = 0x20000000,
711 AHC_IN_RESET = 0x40000000,
712 AHC_EXTERNAL_SRAM = 0x80000000
717 AHC_CHIPID_MASK = 0x00ff,
718 AHC_AIC7770 = 0x0001,
719 AHC_AIC7850 = 0x0002,
720 AHC_AIC7860 = 0x0003,
721 AHC_AIC7870 = 0x0004,
722 AHC_AIC7880 = 0x0005,
723 AHC_AIC7890 = 0x0006,
724 AHC_AIC7895 = 0x0007,
725 AHC_AIC7896 = 0x0008,
726 AHC_AIC7892 = 0x0009,
727 AHC_AIC7899 = 0x000a,
739 AHC_MORE_SRAM = 0x0010,
740 AHC_CMD_CHAN = 0x0020,
741 AHC_QUEUE_REGS = 0x0040,
742 AHC_SG_PRELOAD = 0x0080,
743 AHC_SPIOCAP = 0x0100,
745 AHC_NEW_AUTOTERM = 0x0400,
746 AHC_AIC7770_FE = AHC_FENONE,
747 AHC_AIC7850_FE = AHC_SPIOCAP,
748 AHC_AIC7860_FE = AHC_ULTRA|AHC_SPIOCAP,
749 AHC_AIC7870_FE = AHC_FENONE,
750 AHC_AIC7880_FE = AHC_ULTRA,
751 AHC_AIC7890_FE = AHC_MORE_SRAM|AHC_CMD_CHAN|AHC_ULTRA2|
752 AHC_QUEUE_REGS|AHC_SG_PRELOAD|AHC_NEW_AUTOTERM,
753 AHC_AIC7895_FE = AHC_MORE_SRAM|AHC_CMD_CHAN|AHC_ULTRA,
754 AHC_AIC7896_FE = AHC_AIC7890_FE,
755 AHC_AIC7892_FE = AHC_AIC7890_FE|AHC_ULTRA3,
756 AHC_AIC7899_FE = AHC_AIC7890_FE|AHC_ULTRA3,
759 #define SCB_DMA_ADDR(scb, addr) ((unsigned long)(addr) + (scb)->scb_dma->dma_offset)
761 struct aic7xxx_scb_dma {
762 unsigned long dma_offset; /* Correction you have to add
763 * to virtual address to get
764 * dma handle in this region */
765 dma_addr_t dma_address; /* DMA handle of the start,
767 unsigned int dma_len; /* DMA length */
771 AHC_BUG_NONE = 0x0000,
772 AHC_BUG_TMODE_WIDEODD = 0x0001,
773 AHC_BUG_AUTOFLUSH = 0x0002,
774 AHC_BUG_CACHETHEN = 0x0004,
775 AHC_BUG_CACHETHEN_DIS = 0x0008,
776 AHC_BUG_PCI_2_1_RETRY = 0x0010,
777 AHC_BUG_PCI_MWI = 0x0020,
778 AHC_BUG_SCBCHAN_UPLOAD = 0x0040,
782 struct aic7xxx_hwscb *hscb; /* corresponding hardware scb */
783 struct scsi_cmnd *cmd; /* scsi_cmnd for this scb */
784 struct aic7xxx_scb *q_next; /* next scb in queue */
785 volatile scb_flag_type flags; /* current state of scb */
786 struct hw_scatterlist *sg_list; /* SG list in adapter format */
787 unsigned char tag_action;
788 unsigned char sg_count;
789 unsigned char *sense_cmd; /*
790 * Allocate 6 characters for
794 unsigned int sg_length; /*
795 * We init this during
796 * buildscb so we don't have
797 * to calculate anything during
798 * underflow/overflow/stat code
801 struct aic7xxx_scb_dma *scb_dma;
805 * Define a linked list of SCBs.
808 struct aic7xxx_scb *head;
809 struct aic7xxx_scb *tail;
816 { ILLHADDR, "Illegal Host Access" },
817 { ILLSADDR, "Illegal Sequencer Address referenced" },
818 { ILLOPCODE, "Illegal Opcode in sequencer program" },
819 { SQPARERR, "Sequencer Ram Parity Error" },
820 { DPARERR, "Data-Path Ram Parity Error" },
821 { MPARERR, "Scratch Ram/SCB Array Ram Parity Error" },
822 { PCIERRSTAT,"PCI Error detected" },
823 { CIOPARERR, "CIOBUS Parity Error" }
827 generic_sense[] = { REQUEST_SENSE, 0, 0, 0, 255, 0 };
830 scb_queue_type free_scbs; /*
831 * SCBs assigned to free slot on
832 * card (no paging required)
834 struct aic7xxx_scb *scb_array[AIC7XXX_MAXSCB];
835 struct aic7xxx_hwscb *hscbs;
836 unsigned char numscbs; /* current number of scbs */
837 unsigned char maxhscbs; /* hardware scbs */
838 unsigned char maxscbs; /* max scbs including pageable scbs */
839 dma_addr_t hscbs_dma; /* DMA handle to hscbs */
840 unsigned int hscbs_dma_len; /* length of the above DMA area */
841 void *hscb_kmalloc_ptr;
845 unsigned char mesg_bytes[4];
846 unsigned char command[28];
849 #define AHC_TRANS_CUR 0x0001
850 #define AHC_TRANS_ACTIVE 0x0002
851 #define AHC_TRANS_GOAL 0x0004
852 #define AHC_TRANS_USER 0x0008
853 #define AHC_TRANS_QUITE 0x0010
856 unsigned char period;
857 unsigned char offset;
858 unsigned char options;
861 struct aic_dev_data {
862 volatile scb_queue_type delayed_scbs;
863 volatile unsigned short temp_q_depth;
864 unsigned short max_q_depth;
865 volatile unsigned char active_cmds;
869 * Total Xfers (count for each command that has a data xfer),
870 * broken down by reads && writes.
872 * Further sorted into a few bins for keeping tabs on how many commands
873 * we get of various sizes.
876 long w_total; /* total writes */
877 long r_total; /* total reads */
878 long barrier_total; /* total num of REQ_BARRIER commands */
879 long ordered_total; /* How many REQ_BARRIER commands we
880 used ordered tags to satisfy */
881 long w_bins[6]; /* binned write */
882 long r_bins[6]; /* binned reads */
885 #define BUS_DEVICE_RESET_PENDING 0x01
886 #define DEVICE_RESET_DELAY 0x02
887 #define DEVICE_PRINT_DTR 0x04
888 #define DEVICE_WAS_BUSY 0x08
889 #define DEVICE_DTR_SCANNED 0x10
890 #define DEVICE_SCSI_3 0x20
891 volatile unsigned char flags;
893 unsigned needppr_copy:1;
895 unsigned needsdtr_copy:1;
897 unsigned needwdtr_copy:1;
898 unsigned dtr_pending:1;
899 struct scsi_device *SDptr;
900 struct list_head list;
904 * Define a structure used for each host adapter. Note, in order to avoid
905 * problems with architectures I can't test on (because I don't have one,
906 * such as the Alpha based systems) which happen to give faults for
907 * non-aligned memory accesses, care was taken to align this structure
908 * in a way that gauranteed all accesses larger than 8 bits were aligned
909 * on the appropriate boundary. It's also organized to try and be more
910 * cache line efficient. Be careful when changing this lest you might hurt
911 * overall performance and bring down the wrath of the masses.
913 struct aic7xxx_host {
915 * This is the first 64 bytes in the host struct
919 * We are grouping things here....first, items that get either read or
920 * written with nearly every interrupt
923 ahc_feature features; /* chip features */
924 unsigned long base; /* card base address */
925 volatile unsigned char __iomem *maddr; /* memory mapped address */
926 unsigned long isr_count; /* Interrupt count */
927 unsigned long spurious_int;
928 scb_data_type *scb_data;
929 struct aic7xxx_cmd_queue {
930 struct scsi_cmnd *head;
931 struct scsi_cmnd *tail;
935 * Things read/written on nearly every entry into aic7xxx_queue()
937 volatile scb_queue_type waiting_scbs;
938 unsigned char unpause; /* unpause value for HCNTRL */
939 unsigned char pause; /* pause value for HCNTRL */
940 volatile unsigned char qoutfifonext;
941 volatile unsigned char activescbs; /* active scbs */
942 volatile unsigned char max_activescbs;
943 volatile unsigned char qinfifonext;
944 volatile unsigned char *untagged_scbs;
945 volatile unsigned char *qoutfifo;
946 volatile unsigned char *qinfifo;
948 unsigned char dev_last_queue_full[MAX_TARGETS];
949 unsigned char dev_last_queue_full_count[MAX_TARGETS];
950 unsigned short ultraenb; /* Gets downloaded to card as a bitmap */
951 unsigned short discenable; /* Gets downloaded to card as a bitmap */
952 transinfo_type user[MAX_TARGETS];
954 unsigned char msg_buf[13]; /* The message for the target */
955 unsigned char msg_type;
956 #define MSG_TYPE_NONE 0x00
957 #define MSG_TYPE_INITIATOR_MSGOUT 0x01
958 #define MSG_TYPE_INITIATOR_MSGIN 0x02
959 unsigned char msg_len; /* Length of message */
960 unsigned char msg_index; /* Index into msg_buf array */
964 * We put the less frequently used host structure items
965 * after the more frequently used items to try and ease
966 * the burden on the cache subsystem.
967 * These entries are not *commonly* accessed, whereas
968 * the preceding entries are accessed very often.
971 unsigned int irq; /* IRQ for this adapter */
972 int instance; /* aic7xxx instance number */
973 int scsi_id; /* host adapter SCSI ID */
974 int scsi_id_b; /* channel B for twin adapters */
975 unsigned int bios_address;
976 int board_name_index;
977 unsigned short bios_control; /* bios control - SEEPROM */
978 unsigned short adapter_control; /* adapter control - SEEPROM */
979 struct pci_dev *pdev;
980 unsigned char pci_bus;
981 unsigned char pci_device_fn;
982 struct seeprom_config sc;
983 unsigned short sc_type;
984 unsigned short sc_size;
985 struct aic7xxx_host *next; /* allow for multiple IRQs */
986 struct Scsi_Host *host; /* pointer to scsi host */
987 struct list_head aic_devs; /* all aic_dev structs on host */
988 int host_no; /* SCSI host number */
989 unsigned long mbase; /* I/O memory address */
990 ahc_chip chip; /* chip type */
992 dma_addr_t fifo_dma; /* DMA handle for fifo arrays */
996 * Valid SCSIRATE values. (p. 3-17)
997 * Provides a mapping of transfer periods in ns/4 to the proper value to
998 * stick in the SCSIRATE reg to use that transfer rate.
1000 #define AHC_SYNCRATE_ULTRA3 0
1001 #define AHC_SYNCRATE_ULTRA2 1
1002 #define AHC_SYNCRATE_ULTRA 3
1003 #define AHC_SYNCRATE_FAST 6
1004 #define AHC_SYNCRATE_CRC 0x40
1005 #define AHC_SYNCRATE_SE 0x10
1006 static struct aic7xxx_syncrate {
1007 /* Rates in Ultra mode have bit 8 of sxfr set */
1008 #define ULTRA_SXFR 0x100
1011 unsigned char period;
1012 const char *rate[2];
1013 } aic7xxx_syncrates[] = {
1014 { 0x42, 0x000, 9, {"80.0", "160.0"} },
1015 { 0x13, 0x000, 10, {"40.0", "80.0"} },
1016 { 0x14, 0x000, 11, {"33.0", "66.6"} },
1017 { 0x15, 0x100, 12, {"20.0", "40.0"} },
1018 { 0x16, 0x110, 15, {"16.0", "32.0"} },
1019 { 0x17, 0x120, 18, {"13.4", "26.8"} },
1020 { 0x18, 0x000, 25, {"10.0", "20.0"} },
1021 { 0x19, 0x010, 31, {"8.0", "16.0"} },
1022 { 0x1a, 0x020, 37, {"6.67", "13.3"} },
1023 { 0x1b, 0x030, 43, {"5.7", "11.4"} },
1024 { 0x10, 0x040, 50, {"5.0", "10.0"} },
1025 { 0x00, 0x050, 56, {"4.4", "8.8" } },
1026 { 0x00, 0x060, 62, {"4.0", "8.0" } },
1027 { 0x00, 0x070, 68, {"3.6", "7.2" } },
1028 { 0x00, 0x000, 0, {NULL, NULL} },
1031 #define CTL_OF_SCB(scb) (((scb->hscb)->target_channel_lun >> 3) & 0x1), \
1032 (((scb->hscb)->target_channel_lun >> 4) & 0xf), \
1033 ((scb->hscb)->target_channel_lun & 0x07)
1035 #define CTL_OF_CMD(cmd) ((cmd->device->channel) & 0x01), \
1036 ((cmd->device->id) & 0x0f), \
1037 ((cmd->device->lun) & 0x07)
1039 #define TARGET_INDEX(cmd) ((cmd)->device->id | ((cmd)->device->channel << 3))
1042 * A nice little define to make doing our printks a little easier
1045 #define WARN_LEAD KERN_WARNING "(scsi%d:%d:%d:%d) "
1046 #define INFO_LEAD KERN_INFO "(scsi%d:%d:%d:%d) "
1049 * XXX - these options apply unilaterally to _all_ 274x/284x/294x
1050 * cards in the system. This should be fixed. Exceptions to this
1051 * rule are noted in the comments.
1055 * Use this as the default queue depth when setting tagged queueing on.
1057 static unsigned int aic7xxx_default_queue_depth = AIC7XXX_CMDS_PER_DEVICE;
1060 * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This
1061 * has no effect on any later resets that might occur due to things like
1062 * SCSI bus timeouts.
1064 static unsigned int aic7xxx_no_reset = 0;
1066 * Certain PCI motherboards will scan PCI devices from highest to lowest,
1067 * others scan from lowest to highest, and they tend to do all kinds of
1068 * strange things when they come into contact with PCI bridge chips. The
1069 * net result of all this is that the PCI card that is actually used to boot
1070 * the machine is very hard to detect. Most motherboards go from lowest
1071 * PCI slot number to highest, and the first SCSI controller found is the
1072 * one you boot from. The only exceptions to this are when a controller
1073 * has its BIOS disabled. So, we by default sort all of our SCSI controllers
1074 * from lowest PCI slot number to highest PCI slot number. We also force
1075 * all controllers with their BIOS disabled to the end of the list. This
1076 * works on *almost* all computers. Where it doesn't work, we have this
1077 * option. Setting this option to non-0 will reverse the order of the sort
1078 * to highest first, then lowest, but will still leave cards with their BIOS
1079 * disabled at the very end. That should fix everyone up unless there are
1080 * really strange cirumstances.
1082 static int aic7xxx_reverse_scan = 0;
1084 * Should we force EXTENDED translation on a controller.
1085 * 0 == Use whatever is in the SEEPROM or default to off
1086 * 1 == Use whatever is in the SEEPROM or default to on
1088 static unsigned int aic7xxx_extended = 0;
1090 * The IRQ trigger method used on EISA controllers. Does not effect PCI cards.
1091 * -1 = Use detected settings.
1092 * 0 = Force Edge triggered mode.
1093 * 1 = Force Level triggered mode.
1095 static int aic7xxx_irq_trigger = -1;
1097 * This variable is used to override the termination settings on a controller.
1098 * This should not be used under normal conditions. However, in the case
1099 * that a controller does not have a readable SEEPROM (so that we can't
1100 * read the SEEPROM settings directly) and that a controller has a buggered
1101 * version of the cable detection logic, this can be used to force the
1102 * correct termination. It is preferable to use the manual termination
1103 * settings in the BIOS if possible, but some motherboard controllers store
1104 * those settings in a format we can't read. In other cases, auto term
1105 * should also work, but the chipset was put together with no auto term
1106 * logic (common on motherboard controllers). In those cases, we have
1107 * 32 bits here to work with. That's good for 8 controllers/channels. The
1108 * bits are organized as 4 bits per channel, with scsi0 getting the lowest
1109 * 4 bits in the int. A 1 in a bit position indicates the termination setting
1110 * that corresponds to that bit should be enabled, a 0 is disabled.
1111 * It looks something like this:
1113 * 0x0f = 1111-Single Ended Low Byte Termination on/off
1114 * ||\-Single Ended High Byte Termination on/off
1115 * |\-LVD Low Byte Termination on/off
1116 * \-LVD High Byte Termination on/off
1118 * For non-Ultra2 controllers, the upper 2 bits are not important. So, to
1119 * enable both high byte and low byte termination on scsi0, I would need to
1120 * make sure that the override_term variable was set to 0x03 (bits 0011).
1121 * To make sure that all termination is enabled on an Ultra2 controller at
1122 * scsi2 and only high byte termination on scsi1 and high and low byte
1123 * termination on scsi0, I would set override_term=0xf23 (bits 1111 0010 0011)
1125 * For the most part, users should never have to use this, that's why I
1126 * left it fairly cryptic instead of easy to understand. If you need it,
1127 * most likely someone will be telling you what your's needs to be set to.
1129 static int aic7xxx_override_term = -1;
1131 * Certain motherboard chipset controllers tend to screw
1132 * up the polarity of the term enable output pin. Use this variable
1133 * to force the correct polarity for your system. This is a bitfield variable
1134 * similar to the previous one, but this one has one bit per channel instead
1136 * 0 = Force the setting to active low.
1137 * 1 = Force setting to active high.
1138 * Most Adaptec cards are active high, several motherboards are active low.
1139 * To force a 2940 card at SCSI 0 to active high and a motherboard 7895
1140 * controller at scsi1 and scsi2 to active low, and a 2910 card at scsi3
1141 * to active high, you would need to set stpwlev=0x9 (bits 1001).
1143 * People shouldn't need to use this, but if you are experiencing lots of
1144 * SCSI timeout problems, this may help. There is one sure way to test what
1145 * this option needs to be. Using a boot floppy to boot the system, configure
1146 * your system to enable all SCSI termination (in the Adaptec SCSI BIOS) and
1147 * if needed then also pass a value to override_term to make sure that the
1148 * driver is enabling SCSI termination, then set this variable to either 0
1149 * or 1. When the driver boots, make sure there are *NO* SCSI cables
1150 * connected to your controller. If it finds and inits the controller
1151 * without problem, then the setting you passed to stpwlev was correct. If
1152 * the driver goes into a reset loop and hangs the system, then you need the
1153 * other setting for this variable. If neither setting lets the machine
1154 * boot then you have definite termination problems that may not be fixable.
1156 static int aic7xxx_stpwlev = -1;
1158 * Set this to non-0 in order to force the driver to panic the kernel
1159 * and print out debugging info on a SCSI abort or reset cycle.
1161 static int aic7xxx_panic_on_abort = 0;
1163 * PCI bus parity checking of the Adaptec controllers. This is somewhat
1164 * dubious at best. To my knowledge, this option has never actually
1165 * solved a PCI parity problem, but on certain machines with broken PCI
1166 * chipset configurations, it can generate tons of false error messages.
1167 * It's included in the driver for completeness.
1168 * 0 = Shut off PCI parity check
1169 * -1 = Normal polarity pci parity checking
1170 * 1 = reverse polarity pci parity checking
1172 * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
1173 * variable to -1 you would actually want to simply pass the variable
1174 * name without a number. That will invert the 0 which will result in
1177 static int aic7xxx_pci_parity = 0;
1179 * Set this to any non-0 value to cause us to dump the contents of all
1180 * the card's registers in a hex dump format tailored to each model of
1183 * NOTE: THE CONTROLLER IS LEFT IN AN UNUSEABLE STATE BY THIS OPTION.
1184 * YOU CANNOT BOOT UP WITH THIS OPTION, IT IS FOR DEBUGGING PURPOSES
1187 static int aic7xxx_dump_card = 0;
1189 * Set this to a non-0 value to make us dump out the 32 bit instruction
1190 * registers on the card after completing the sequencer download. This
1191 * allows the actual sequencer download to be verified. It is possible
1192 * to use this option and still boot up and run your system. This is
1193 * only intended for debugging purposes.
1195 static int aic7xxx_dump_sequencer = 0;
1197 * Certain newer motherboards have put new PCI based devices into the
1198 * IO spaces that used to typically be occupied by VLB or EISA cards.
1199 * This overlap can cause these newer motherboards to lock up when scanned
1200 * for older EISA and VLB devices. Setting this option to non-0 will
1201 * cause the driver to skip scanning for any VLB or EISA controllers and
1202 * only support the PCI controllers. NOTE: this means that if the kernel
1203 * os compiled with PCI support disabled, then setting this to non-0
1204 * would result in never finding any devices :)
1206 static int aic7xxx_no_probe = 0;
1208 * On some machines, enabling the external SCB RAM isn't reliable yet. I
1209 * haven't had time to make test patches for things like changing the
1210 * timing mode on that external RAM either. Some of those changes may
1211 * fix the problem. Until then though, we default to external SCB RAM
1212 * off and give a command line option to enable it.
1214 static int aic7xxx_scbram = 0;
1216 * So that we can set how long each device is given as a selection timeout.
1217 * The table of values goes like this:
1222 * We default to 64ms because it's fast. Some old SCSI-I devices need a
1223 * longer time. The final value has to be left shifted by 3, hence 0x10
1224 * is the final value.
1226 static int aic7xxx_seltime = 0x10;
1228 * So that insmod can find the variable and make it point to something
1231 static char * aic7xxx = NULL;
1232 module_param(aic7xxx, charp, 0);
1235 #define VERBOSE_NORMAL 0x0000
1236 #define VERBOSE_NEGOTIATION 0x0001
1237 #define VERBOSE_SEQINT 0x0002
1238 #define VERBOSE_SCSIINT 0x0004
1239 #define VERBOSE_PROBE 0x0008
1240 #define VERBOSE_PROBE2 0x0010
1241 #define VERBOSE_NEGOTIATION2 0x0020
1242 #define VERBOSE_MINOR_ERROR 0x0040
1243 #define VERBOSE_TRACING 0x0080
1244 #define VERBOSE_ABORT 0x0f00
1245 #define VERBOSE_ABORT_MID 0x0100
1246 #define VERBOSE_ABORT_FIND 0x0200
1247 #define VERBOSE_ABORT_PROCESS 0x0400
1248 #define VERBOSE_ABORT_RETURN 0x0800
1249 #define VERBOSE_RESET 0xf000
1250 #define VERBOSE_RESET_MID 0x1000
1251 #define VERBOSE_RESET_FIND 0x2000
1252 #define VERBOSE_RESET_PROCESS 0x4000
1253 #define VERBOSE_RESET_RETURN 0x8000
1254 static int aic7xxx_verbose = VERBOSE_NORMAL | VERBOSE_NEGOTIATION |
1255 VERBOSE_PROBE; /* verbose messages */
1258 /****************************************************************************
1260 * We're going to start putting in function declarations so that order of
1261 * functions is no longer important. As needed, they are added here.
1263 ***************************************************************************/
1265 static int aic7xxx_release(struct Scsi_Host *host);
1266 static void aic7xxx_set_syncrate(struct aic7xxx_host *p,
1267 struct aic7xxx_syncrate *syncrate, int target, int channel,
1268 unsigned int period, unsigned int offset, unsigned char options,
1269 unsigned int type, struct aic_dev_data *aic_dev);
1270 static void aic7xxx_set_width(struct aic7xxx_host *p, int target, int channel,
1271 int lun, unsigned int width, unsigned int type,
1272 struct aic_dev_data *aic_dev);
1273 static void aic7xxx_panic_abort(struct aic7xxx_host *p, struct scsi_cmnd *cmd);
1274 static void aic7xxx_print_card(struct aic7xxx_host *p);
1275 static void aic7xxx_print_scratch_ram(struct aic7xxx_host *p);
1276 static void aic7xxx_print_sequencer(struct aic7xxx_host *p, int downloaded);
1277 #ifdef AIC7XXX_VERBOSE_DEBUGGING
1278 static void aic7xxx_check_scbs(struct aic7xxx_host *p, char *buffer);
1281 /****************************************************************************
1283 * These functions are now used. They happen to be wrapped in useless
1284 * inb/outb port read/writes around the real reads and writes because it
1285 * seems that certain very fast CPUs have a problem dealing with us when
1286 * going at full speed.
1288 ***************************************************************************/
1290 static unsigned char
1291 aic_inb(struct aic7xxx_host *p, long port)
1297 x = readb(p->maddr + port);
1301 x = inb(p->base + port);
1305 return(inb(p->base + port));
1310 aic_outb(struct aic7xxx_host *p, unsigned char val, long port)
1315 writeb(val, p->maddr + port);
1316 mb(); /* locked operation in order to force CPU ordering */
1317 readb(p->maddr + HCNTRL); /* dummy read to flush the PCI write */
1321 outb(val, p->base + port);
1322 mb(); /* locked operation in order to force CPU ordering */
1325 outb(val, p->base + port);
1326 mb(); /* locked operation in order to force CPU ordering */
1330 /*+F*************************************************************************
1335 * Handle Linux boot parameters. This routine allows for assigning a value
1336 * to a parameter with a ':' between the parameter and the value.
1337 * ie. aic7xxx=unpause:0x0A,extended
1338 *-F*************************************************************************/
1340 aic7xxx_setup(char *s)
1350 { "extended", &aic7xxx_extended },
1351 { "no_reset", &aic7xxx_no_reset },
1352 { "irq_trigger", &aic7xxx_irq_trigger },
1353 { "verbose", &aic7xxx_verbose },
1354 { "reverse_scan",&aic7xxx_reverse_scan },
1355 { "override_term", &aic7xxx_override_term },
1356 { "stpwlev", &aic7xxx_stpwlev },
1357 { "no_probe", &aic7xxx_no_probe },
1358 { "panic_on_abort", &aic7xxx_panic_on_abort },
1359 { "pci_parity", &aic7xxx_pci_parity },
1360 { "dump_card", &aic7xxx_dump_card },
1361 { "dump_sequencer", &aic7xxx_dump_sequencer },
1362 { "default_queue_depth", &aic7xxx_default_queue_depth },
1363 { "scbram", &aic7xxx_scbram },
1364 { "seltime", &aic7xxx_seltime },
1365 { "tag_info", NULL }
1368 end = strchr(s, '\0');
1370 while ((p = strsep(&s, ",.")) != NULL)
1372 for (i = 0; i < ARRAY_SIZE(options); i++)
1374 n = strlen(options[i].name);
1375 if (!strncmp(options[i].name, p, n))
1377 if (!strncmp(p, "tag_info", n))
1382 char *tok, *tok_end, *tok_end2;
1383 char tok_list[] = { '.', ',', '{', '}', '\0' };
1384 int i, instance = -1, device = -1;
1385 unsigned char done = FALSE;
1388 tok = base + n + 1; /* Forward us just past the ':' */
1389 tok_end = strchr(tok, '\0');
1399 else if (device == -1)
1406 else if (instance != -1)
1414 else if (device >= 0)
1416 else if (instance >= 0)
1418 if ( (device >= MAX_TARGETS) ||
1419 (instance >= ARRAY_SIZE(aic7xxx_tag_info)) )
1432 tok_end = strchr(tok, '\0');
1433 for(i=0; tok_list[i]; i++)
1435 tok_end2 = strchr(tok, tok_list[i]);
1436 if ( (tok_end2) && (tok_end2 < tok_end) )
1442 if ( (instance >= 0) && (device >= 0) &&
1443 (instance < ARRAY_SIZE(aic7xxx_tag_info)) &&
1444 (device < MAX_TARGETS) )
1445 aic7xxx_tag_info[instance].tag_commands[device] =
1446 simple_strtoul(tok, NULL, 0) & 0xff;
1451 while((p != base) && (p != NULL))
1452 p = strsep(&s, ",.");
1455 else if (p[n] == ':')
1457 *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0);
1458 if(!strncmp(p, "seltime", n))
1460 *(options[i].flag) = (*(options[i].flag) % 4) << 3;
1463 else if (!strncmp(p, "verbose", n))
1465 *(options[i].flag) = 0xff29;
1469 *(options[i].flag) = ~(*(options[i].flag));
1470 if(!strncmp(p, "seltime", n))
1472 *(options[i].flag) = (*(options[i].flag) % 4) << 3;
1481 __setup("aic7xxx=", aic7xxx_setup);
1483 /*+F*************************************************************************
1488 * Pause the sequencer and wait for it to actually stop - this
1489 * is important since the sequencer can disable pausing for critical
1491 *-F*************************************************************************/
1493 pause_sequencer(struct aic7xxx_host *p)
1495 aic_outb(p, p->pause, HCNTRL);
1496 while ((aic_inb(p, HCNTRL) & PAUSE) == 0)
1500 if(p->features & AHC_ULTRA2)
1502 aic_inb(p, CCSCBCTL);
1506 /*+F*************************************************************************
1511 * Unpause the sequencer. Unremarkable, yet done often enough to
1512 * warrant an easy way to do it.
1513 *-F*************************************************************************/
1515 unpause_sequencer(struct aic7xxx_host *p, int unpause_always)
1517 if (unpause_always ||
1518 ( !(aic_inb(p, INTSTAT) & (SCSIINT | SEQINT | BRKADRINT)) &&
1519 !(p->flags & AHC_HANDLING_REQINITS) ) )
1521 aic_outb(p, p->unpause, HCNTRL);
1525 /*+F*************************************************************************
1530 * Restart the sequencer program from address zero. This assumes
1531 * that the sequencer is already paused.
1532 *-F*************************************************************************/
1534 restart_sequencer(struct aic7xxx_host *p)
1536 aic_outb(p, 0, SEQADDR0);
1537 aic_outb(p, 0, SEQADDR1);
1538 aic_outb(p, FASTMODE, SEQCTL);
1542 * We include the aic7xxx_seq.c file here so that the other defines have
1543 * already been made, and so that it comes before the code that actually
1544 * downloads the instructions (since we don't typically use function
1545 * prototype, our code has to be ordered that way, it's a left-over from
1546 * the original driver days.....I should fix it some time DL).
1548 #include "aic7xxx_old/aic7xxx_seq.c"
1550 /*+F*************************************************************************
1552 * aic7xxx_check_patch
1555 * See if the next patch to download should be downloaded.
1556 *-F*************************************************************************/
1558 aic7xxx_check_patch(struct aic7xxx_host *p,
1559 struct sequencer_patch **start_patch, int start_instr, int *skip_addr)
1561 struct sequencer_patch *cur_patch;
1562 struct sequencer_patch *last_patch;
1565 num_patches = ARRAY_SIZE(sequencer_patches);
1566 last_patch = &sequencer_patches[num_patches];
1567 cur_patch = *start_patch;
1569 while ((cur_patch < last_patch) && (start_instr == cur_patch->begin))
1571 if (cur_patch->patch_func(p) == 0)
1574 * Start rejecting code.
1576 *skip_addr = start_instr + cur_patch->skip_instr;
1577 cur_patch += cur_patch->skip_patch;
1582 * Found an OK patch. Advance the patch pointer to the next patch
1583 * and wait for our instruction pointer to get here.
1589 *start_patch = cur_patch;
1590 if (start_instr < *skip_addr)
1599 /*+F*************************************************************************
1601 * aic7xxx_download_instr
1604 * Find the next patch to download.
1605 *-F*************************************************************************/
1607 aic7xxx_download_instr(struct aic7xxx_host *p, int instrptr,
1608 unsigned char *dconsts)
1610 union ins_formats instr;
1611 struct ins_format1 *fmt1_ins;
1612 struct ins_format3 *fmt3_ins;
1613 unsigned char opcode;
1615 instr = *(union ins_formats*) &seqprog[instrptr * 4];
1617 instr.integer = le32_to_cpu(instr.integer);
1619 fmt1_ins = &instr.format1;
1622 /* Pull the opcode */
1623 opcode = instr.format1.opcode;
1635 struct sequencer_patch *cur_patch;
1637 unsigned int address;
1641 fmt3_ins = &instr.format3;
1643 address = fmt3_ins->address;
1644 cur_patch = sequencer_patches;
1647 for (i = 0; i < address;)
1649 aic7xxx_check_patch(p, &cur_patch, i, &skip_addr);
1654 end_addr = min_t(int, address, skip_addr);
1655 address_offset += end_addr - i;
1663 address -= address_offset;
1664 fmt3_ins->address = address;
1665 /* Fall Through to the next code section */
1673 if (fmt1_ins->parity != 0)
1675 fmt1_ins->immediate = dconsts[fmt1_ins->immediate];
1677 fmt1_ins->parity = 0;
1678 /* Fall Through to the next code section */
1680 if ((p->features & AHC_ULTRA2) != 0)
1684 /* Calculate odd parity for the instruction */
1685 for ( i=0, count=0; i < 31; i++)
1690 if ((instr.integer & mask) != 0)
1693 if (!(count & 0x01))
1694 instr.format1.parity = 1;
1698 if (fmt3_ins != NULL)
1700 instr.integer = fmt3_ins->immediate |
1701 (fmt3_ins->source << 8) |
1702 (fmt3_ins->address << 16) |
1703 (fmt3_ins->opcode << 25);
1707 instr.integer = fmt1_ins->immediate |
1708 (fmt1_ins->source << 8) |
1709 (fmt1_ins->destination << 16) |
1710 (fmt1_ins->ret << 24) |
1711 (fmt1_ins->opcode << 25);
1714 aic_outb(p, (instr.integer & 0xff), SEQRAM);
1715 aic_outb(p, ((instr.integer >> 8) & 0xff), SEQRAM);
1716 aic_outb(p, ((instr.integer >> 16) & 0xff), SEQRAM);
1717 aic_outb(p, ((instr.integer >> 24) & 0xff), SEQRAM);
1722 panic("aic7xxx: Unknown opcode encountered in sequencer program.");
1728 /*+F*************************************************************************
1733 * Load the sequencer code into the controller memory.
1734 *-F*************************************************************************/
1736 aic7xxx_loadseq(struct aic7xxx_host *p)
1738 struct sequencer_patch *cur_patch;
1742 unsigned char download_consts[4] = {0, 0, 0, 0};
1744 if (aic7xxx_verbose & VERBOSE_PROBE)
1746 printk(KERN_INFO "(scsi%d) Downloading sequencer code...", p->host_no);
1749 download_consts[TMODE_NUMCMDS] = p->num_targetcmds;
1751 download_consts[TMODE_NUMCMDS] = 0;
1752 cur_patch = &sequencer_patches[0];
1756 aic_outb(p, PERRORDIS|LOADRAM|FAILDIS|FASTMODE, SEQCTL);
1757 aic_outb(p, 0, SEQADDR0);
1758 aic_outb(p, 0, SEQADDR1);
1760 for (i = 0; i < sizeof(seqprog) / 4; i++)
1762 if (aic7xxx_check_patch(p, &cur_patch, i, &skip_addr) == 0)
1764 /* Skip this instruction for this configuration. */
1767 aic7xxx_download_instr(p, i, &download_consts[0]);
1771 aic_outb(p, 0, SEQADDR0);
1772 aic_outb(p, 0, SEQADDR1);
1773 aic_outb(p, FASTMODE | FAILDIS, SEQCTL);
1774 unpause_sequencer(p, TRUE);
1777 aic_outb(p, FASTMODE, SEQCTL);
1778 if (aic7xxx_verbose & VERBOSE_PROBE)
1780 printk(" %d instructions downloaded\n", downloaded);
1782 if (aic7xxx_dump_sequencer)
1783 aic7xxx_print_sequencer(p, downloaded);
1786 /*+F*************************************************************************
1788 * aic7xxx_print_sequencer
1791 * Print the contents of the sequencer memory to the screen.
1792 *-F*************************************************************************/
1794 aic7xxx_print_sequencer(struct aic7xxx_host *p, int downloaded)
1798 aic_outb(p, PERRORDIS|LOADRAM|FAILDIS|FASTMODE, SEQCTL);
1799 aic_outb(p, 0, SEQADDR0);
1800 aic_outb(p, 0, SEQADDR1);
1803 for (i=0; i < downloaded; i++)
1806 printk("%03x: ", i);
1807 temp = aic_inb(p, SEQRAM);
1808 temp |= (aic_inb(p, SEQRAM) << 8);
1809 temp |= (aic_inb(p, SEQRAM) << 16);
1810 temp |= (aic_inb(p, SEQRAM) << 24);
1811 printk("%08x", temp);
1820 aic_outb(p, 0, SEQADDR0);
1821 aic_outb(p, 0, SEQADDR1);
1822 aic_outb(p, FASTMODE | FAILDIS, SEQCTL);
1823 unpause_sequencer(p, TRUE);
1826 aic_outb(p, FASTMODE, SEQCTL);
1830 /*+F*************************************************************************
1835 * Return a string describing the driver.
1836 *-F*************************************************************************/
1838 aic7xxx_info(struct Scsi_Host *dooh)
1840 static char buffer[256];
1842 struct aic7xxx_host *p;
1845 p = (struct aic7xxx_host *)dooh->hostdata;
1846 memset(bp, 0, sizeof(buffer));
1847 strcpy(bp, "Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) ");
1848 strcat(bp, AIC7XXX_C_VERSION);
1850 strcat(bp, AIC7XXX_H_VERSION);
1853 strcat(bp, board_names[p->board_name_index]);
1859 /*+F*************************************************************************
1861 * aic7xxx_find_syncrate
1864 * Look up the valid period to SCSIRATE conversion in our table
1865 *-F*************************************************************************/
1866 static struct aic7xxx_syncrate *
1867 aic7xxx_find_syncrate(struct aic7xxx_host *p, unsigned int *period,
1868 unsigned int maxsync, unsigned char *options)
1870 struct aic7xxx_syncrate *syncrate;
1875 case MSG_EXT_PPR_OPTION_DT_CRC:
1876 case MSG_EXT_PPR_OPTION_DT_UNITS:
1877 if(!(p->features & AHC_ULTRA3))
1880 maxsync = max_t(unsigned int, maxsync, AHC_SYNCRATE_ULTRA2);
1883 case MSG_EXT_PPR_OPTION_DT_CRC_QUICK:
1884 case MSG_EXT_PPR_OPTION_DT_UNITS_QUICK:
1885 if(!(p->features & AHC_ULTRA3))
1888 maxsync = max_t(unsigned int, maxsync, AHC_SYNCRATE_ULTRA2);
1893 * we don't support the Quick Arbitration variants of dual edge
1894 * clocking. As it turns out, we want to send back the
1895 * same basic option, but without the QA attribute.
1896 * We know that we are responding because we would never set
1897 * these options ourself, we would only respond to them.
1901 case MSG_EXT_PPR_OPTION_DT_CRC_QUICK:
1902 *options = MSG_EXT_PPR_OPTION_DT_CRC;
1904 case MSG_EXT_PPR_OPTION_DT_UNITS_QUICK:
1905 *options = MSG_EXT_PPR_OPTION_DT_UNITS;
1912 maxsync = max_t(unsigned int, maxsync, AHC_SYNCRATE_ULTRA2);
1915 syncrate = &aic7xxx_syncrates[maxsync];
1916 while ( (syncrate->rate[0] != NULL) &&
1917 (!(p->features & AHC_ULTRA2) || syncrate->sxfr_ultra2) )
1919 if (*period <= syncrate->period)
1923 case MSG_EXT_PPR_OPTION_DT_CRC:
1924 case MSG_EXT_PPR_OPTION_DT_UNITS:
1925 if(!(syncrate->sxfr_ultra2 & AHC_SYNCRATE_CRC))
1929 * oops, we went too low for the CRC/DualEdge signalling, so
1930 * clear the options byte
1934 * We'll be sending a reply to this packet to set the options
1935 * properly, so unilaterally set the period as well.
1937 *period = syncrate->period;
1942 if(syncrate == &aic7xxx_syncrates[maxsync])
1944 *period = syncrate->period;
1949 if(!(syncrate->sxfr_ultra2 & AHC_SYNCRATE_CRC))
1952 if(syncrate == &aic7xxx_syncrates[maxsync])
1954 *period = syncrate->period;
1966 if ( (*period == 0) || (syncrate->rate[0] == NULL) ||
1967 ((p->features & AHC_ULTRA2) && (syncrate->sxfr_ultra2 == 0)) )
1970 * Use async transfers for this target
1980 /*+F*************************************************************************
1982 * aic7xxx_find_period
1985 * Look up the valid SCSIRATE to period conversion in our table
1986 *-F*************************************************************************/
1988 aic7xxx_find_period(struct aic7xxx_host *p, unsigned int scsirate,
1989 unsigned int maxsync)
1991 struct aic7xxx_syncrate *syncrate;
1993 if (p->features & AHC_ULTRA2)
1995 scsirate &= SXFR_ULTRA2;
2002 syncrate = &aic7xxx_syncrates[maxsync];
2003 while (syncrate->rate[0] != NULL)
2005 if (p->features & AHC_ULTRA2)
2007 if (syncrate->sxfr_ultra2 == 0)
2009 else if (scsirate == syncrate->sxfr_ultra2)
2010 return (syncrate->period);
2011 else if (scsirate == (syncrate->sxfr_ultra2 & ~AHC_SYNCRATE_CRC))
2012 return (syncrate->period);
2014 else if (scsirate == (syncrate->sxfr & ~ULTRA_SXFR))
2016 return (syncrate->period);
2020 return (0); /* async */
2023 /*+F*************************************************************************
2025 * aic7xxx_validate_offset
2028 * Set a valid offset value for a particular card in use and transfer
2030 *-F*************************************************************************/
2032 aic7xxx_validate_offset(struct aic7xxx_host *p,
2033 struct aic7xxx_syncrate *syncrate, unsigned int *offset, int wide)
2035 unsigned int maxoffset;
2037 /* Limit offset to what the card (and device) can do */
2038 if (syncrate == NULL)
2042 else if (p->features & AHC_ULTRA2)
2044 maxoffset = MAX_OFFSET_ULTRA2;
2049 maxoffset = MAX_OFFSET_16BIT;
2051 maxoffset = MAX_OFFSET_8BIT;
2053 *offset = min(*offset, maxoffset);
2056 /*+F*************************************************************************
2058 * aic7xxx_set_syncrate
2061 * Set the actual syncrate down in the card and in our host structs
2062 *-F*************************************************************************/
2064 aic7xxx_set_syncrate(struct aic7xxx_host *p, struct aic7xxx_syncrate *syncrate,
2065 int target, int channel, unsigned int period, unsigned int offset,
2066 unsigned char options, unsigned int type, struct aic_dev_data *aic_dev)
2068 unsigned char tindex;
2069 unsigned short target_mask;
2070 unsigned char lun, old_options;
2071 unsigned int old_period, old_offset;
2073 tindex = target | (channel << 3);
2074 target_mask = 0x01 << tindex;
2075 lun = aic_inb(p, SCB_TCL) & 0x07;
2077 if (syncrate == NULL)
2083 old_period = aic_dev->cur.period;
2084 old_offset = aic_dev->cur.offset;
2085 old_options = aic_dev->cur.options;
2088 if (type & AHC_TRANS_CUR)
2090 unsigned int scsirate;
2092 scsirate = aic_inb(p, TARG_SCSIRATE + tindex);
2093 if (p->features & AHC_ULTRA2)
2095 scsirate &= ~SXFR_ULTRA2;
2096 if (syncrate != NULL)
2100 case MSG_EXT_PPR_OPTION_DT_UNITS:
2102 * mask off the CRC bit in the xfer settings
2104 scsirate |= (syncrate->sxfr_ultra2 & ~AHC_SYNCRATE_CRC);
2107 scsirate |= syncrate->sxfr_ultra2;
2111 if (type & AHC_TRANS_ACTIVE)
2113 aic_outb(p, offset, SCSIOFFSET);
2115 aic_outb(p, offset, TARG_OFFSET + tindex);
2117 else /* Not an Ultra2 controller */
2119 scsirate &= ~(SXFR|SOFS);
2120 p->ultraenb &= ~target_mask;
2121 if (syncrate != NULL)
2123 if (syncrate->sxfr & ULTRA_SXFR)
2125 p->ultraenb |= target_mask;
2127 scsirate |= (syncrate->sxfr & SXFR);
2128 scsirate |= (offset & SOFS);
2130 if (type & AHC_TRANS_ACTIVE)
2132 unsigned char sxfrctl0;
2134 sxfrctl0 = aic_inb(p, SXFRCTL0);
2135 sxfrctl0 &= ~FAST20;
2136 if (p->ultraenb & target_mask)
2138 aic_outb(p, sxfrctl0, SXFRCTL0);
2140 aic_outb(p, p->ultraenb & 0xff, ULTRA_ENB);
2141 aic_outb(p, (p->ultraenb >> 8) & 0xff, ULTRA_ENB + 1 );
2143 if (type & AHC_TRANS_ACTIVE)
2145 aic_outb(p, scsirate, SCSIRATE);
2147 aic_outb(p, scsirate, TARG_SCSIRATE + tindex);
2148 aic_dev->cur.period = period;
2149 aic_dev->cur.offset = offset;
2150 aic_dev->cur.options = options;
2151 if ( !(type & AHC_TRANS_QUITE) &&
2152 (aic7xxx_verbose & VERBOSE_NEGOTIATION) &&
2153 (aic_dev->flags & DEVICE_PRINT_DTR) )
2157 int rate_mod = (scsirate & WIDEXFER) ? 1 : 0;
2159 printk(INFO_LEAD "Synchronous at %s Mbyte/sec, "
2160 "offset %d.\n", p->host_no, channel, target, lun,
2161 syncrate->rate[rate_mod], offset);
2165 printk(INFO_LEAD "Using asynchronous transfers.\n",
2166 p->host_no, channel, target, lun);
2168 aic_dev->flags &= ~DEVICE_PRINT_DTR;
2172 if (type & AHC_TRANS_GOAL)
2174 aic_dev->goal.period = period;
2175 aic_dev->goal.offset = offset;
2176 aic_dev->goal.options = options;
2179 if (type & AHC_TRANS_USER)
2181 p->user[tindex].period = period;
2182 p->user[tindex].offset = offset;
2183 p->user[tindex].options = options;
2187 /*+F*************************************************************************
2192 * Set the actual width down in the card and in our host structs
2193 *-F*************************************************************************/
2195 aic7xxx_set_width(struct aic7xxx_host *p, int target, int channel, int lun,
2196 unsigned int width, unsigned int type, struct aic_dev_data *aic_dev)
2198 unsigned char tindex;
2199 unsigned short target_mask;
2200 unsigned int old_width;
2202 tindex = target | (channel << 3);
2203 target_mask = 1 << tindex;
2205 old_width = aic_dev->cur.width;
2207 if (type & AHC_TRANS_CUR)
2209 unsigned char scsirate;
2211 scsirate = aic_inb(p, TARG_SCSIRATE + tindex);
2213 scsirate &= ~WIDEXFER;
2214 if (width == MSG_EXT_WDTR_BUS_16_BIT)
2215 scsirate |= WIDEXFER;
2217 aic_outb(p, scsirate, TARG_SCSIRATE + tindex);
2219 if (type & AHC_TRANS_ACTIVE)
2220 aic_outb(p, scsirate, SCSIRATE);
2222 aic_dev->cur.width = width;
2224 if ( !(type & AHC_TRANS_QUITE) &&
2225 (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
2226 (aic_dev->flags & DEVICE_PRINT_DTR) )
2228 printk(INFO_LEAD "Using %s transfers\n", p->host_no, channel, target,
2229 lun, (scsirate & WIDEXFER) ? "Wide(16bit)" : "Narrow(8bit)" );
2233 if (type & AHC_TRANS_GOAL)
2234 aic_dev->goal.width = width;
2235 if (type & AHC_TRANS_USER)
2236 p->user[tindex].width = width;
2238 if (aic_dev->goal.offset)
2240 if (p->features & AHC_ULTRA2)
2242 aic_dev->goal.offset = MAX_OFFSET_ULTRA2;
2244 else if (width == MSG_EXT_WDTR_BUS_16_BIT)
2246 aic_dev->goal.offset = MAX_OFFSET_16BIT;
2250 aic_dev->goal.offset = MAX_OFFSET_8BIT;
2255 /*+F*************************************************************************
2260 * SCB queue initialization.
2262 *-F*************************************************************************/
2264 scbq_init(volatile scb_queue_type *queue)
2270 /*+F*************************************************************************
2275 * Add an SCB to the head of the list.
2277 *-F*************************************************************************/
2279 scbq_insert_head(volatile scb_queue_type *queue, struct aic7xxx_scb *scb)
2281 scb->q_next = queue->head;
2283 if (queue->tail == NULL) /* If list was empty, update tail. */
2284 queue->tail = queue->head;
2287 /*+F*************************************************************************
2292 * Remove an SCB from the head of the list.
2294 *-F*************************************************************************/
2295 static inline struct aic7xxx_scb *
2296 scbq_remove_head(volatile scb_queue_type *queue)
2298 struct aic7xxx_scb * scbp;
2301 if (queue->head != NULL)
2302 queue->head = queue->head->q_next;
2303 if (queue->head == NULL) /* If list is now empty, update tail. */
2308 /*+F*************************************************************************
2313 * Removes an SCB from the list.
2315 *-F*************************************************************************/
2317 scbq_remove(volatile scb_queue_type *queue, struct aic7xxx_scb *scb)
2319 if (queue->head == scb)
2321 /* At beginning of queue, remove from head. */
2322 scbq_remove_head(queue);
2326 struct aic7xxx_scb *curscb = queue->head;
2329 * Search until the next scb is the one we're looking for, or
2330 * we run out of queue.
2332 while ((curscb != NULL) && (curscb->q_next != scb))
2334 curscb = curscb->q_next;
2339 curscb->q_next = scb->q_next;
2340 if (scb->q_next == NULL)
2342 /* Update the tail when removing the tail. */
2343 queue->tail = curscb;
2349 /*+F*************************************************************************
2354 * Add an SCB at the tail of the list.
2356 *-F*************************************************************************/
2358 scbq_insert_tail(volatile scb_queue_type *queue, struct aic7xxx_scb *scb)
2361 if (queue->tail != NULL) /* Add the scb at the end of the list. */
2362 queue->tail->q_next = scb;
2363 queue->tail = scb; /* Update the tail. */
2364 if (queue->head == NULL) /* If list was empty, update head. */
2365 queue->head = queue->tail;
2368 /*+F*************************************************************************
2373 * Checks to see if an scb matches the target/channel as specified.
2374 * If target is ALL_TARGETS (-1), then we're looking for any device
2375 * on the specified channel; this happens when a channel is going
2376 * to be reset and all devices on that channel must be aborted.
2377 *-F*************************************************************************/
2379 aic7xxx_match_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb,
2380 int target, int channel, int lun, unsigned char tag)
2382 int targ = (scb->hscb->target_channel_lun >> 4) & 0x0F;
2383 int chan = (scb->hscb->target_channel_lun >> 3) & 0x01;
2384 int slun = scb->hscb->target_channel_lun & 0x07;
2387 match = ((chan == channel) || (channel == ALL_CHANNELS));
2389 match = ((targ == target) || (target == ALL_TARGETS));
2391 match = ((lun == slun) || (lun == ALL_LUNS));
2393 match = ((tag == scb->hscb->tag) || (tag == SCB_LIST_NULL));
2398 /*+F*************************************************************************
2400 * aic7xxx_add_curscb_to_free_list
2403 * Adds the current scb (in SCBPTR) to the list of free SCBs.
2404 *-F*************************************************************************/
2406 aic7xxx_add_curscb_to_free_list(struct aic7xxx_host *p)
2409 * Invalidate the tag so that aic7xxx_find_scb doesn't think
2412 aic_outb(p, SCB_LIST_NULL, SCB_TAG);
2413 aic_outb(p, 0, SCB_CONTROL);
2415 aic_outb(p, aic_inb(p, FREE_SCBH), SCB_NEXT);
2416 aic_outb(p, aic_inb(p, SCBPTR), FREE_SCBH);
2419 /*+F*************************************************************************
2421 * aic7xxx_rem_scb_from_disc_list
2424 * Removes the current SCB from the disconnected list and adds it
2426 *-F*************************************************************************/
2427 static unsigned char
2428 aic7xxx_rem_scb_from_disc_list(struct aic7xxx_host *p, unsigned char scbptr,
2433 aic_outb(p, scbptr, SCBPTR);
2434 next = aic_inb(p, SCB_NEXT);
2435 aic7xxx_add_curscb_to_free_list(p);
2437 if (prev != SCB_LIST_NULL)
2439 aic_outb(p, prev, SCBPTR);
2440 aic_outb(p, next, SCB_NEXT);
2444 aic_outb(p, next, DISCONNECTED_SCBH);
2450 /*+F*************************************************************************
2452 * aic7xxx_busy_target
2455 * Set the specified target busy.
2456 *-F*************************************************************************/
2458 aic7xxx_busy_target(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
2460 p->untagged_scbs[scb->hscb->target_channel_lun] = scb->hscb->tag;
2463 /*+F*************************************************************************
2465 * aic7xxx_index_busy_target
2468 * Returns the index of the busy target, and optionally sets the
2470 *-F*************************************************************************/
2471 static inline unsigned char
2472 aic7xxx_index_busy_target(struct aic7xxx_host *p, unsigned char tcl,
2475 unsigned char busy_scbid;
2477 busy_scbid = p->untagged_scbs[tcl];
2480 p->untagged_scbs[tcl] = SCB_LIST_NULL;
2482 return (busy_scbid);
2485 /*+F*************************************************************************
2490 * Look through the SCB array of the card and attempt to find the
2491 * hardware SCB that corresponds to the passed in SCB. Return
2492 * SCB_LIST_NULL if unsuccessful. This routine assumes that the
2493 * card is already paused.
2494 *-F*************************************************************************/
2495 static unsigned char
2496 aic7xxx_find_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
2498 unsigned char saved_scbptr;
2499 unsigned char curindex;
2501 saved_scbptr = aic_inb(p, SCBPTR);
2503 for (curindex = 0; curindex < p->scb_data->maxhscbs; curindex++)
2505 aic_outb(p, curindex, SCBPTR);
2506 if (aic_inb(p, SCB_TAG) == scb->hscb->tag)
2511 aic_outb(p, saved_scbptr, SCBPTR);
2512 if (curindex >= p->scb_data->maxhscbs)
2514 curindex = SCB_LIST_NULL;
2520 /*+F*************************************************************************
2522 * aic7xxx_allocate_scb
2525 * Get an SCB from the free list or by allocating a new one.
2526 *-F*************************************************************************/
2528 aic7xxx_allocate_scb(struct aic7xxx_host *p)
2530 struct aic7xxx_scb *scbp = NULL;
2531 int scb_size = (sizeof (struct hw_scatterlist) * AIC7XXX_MAX_SG) + 12 + 6;
2533 int step = PAGE_SIZE / 1024;
2534 unsigned long scb_count = 0;
2535 struct hw_scatterlist *hsgp;
2536 struct aic7xxx_scb *scb_ap;
2537 struct aic7xxx_scb_dma *scb_dma;
2538 unsigned char *bufs;
2540 if (p->scb_data->numscbs < p->scb_data->maxscbs)
2543 * Calculate the optimal number of SCBs to allocate.
2545 * NOTE: This formula works because the sizeof(sg_array) is always
2546 * 1024. Therefore, scb_size * i would always be > PAGE_SIZE *
2547 * (i/step). The (i-1) allows the left hand side of the equation
2548 * to grow into the right hand side to a point of near perfect
2549 * efficiency since scb_size * (i -1) is growing slightly faster
2550 * than the right hand side. If the number of SG array elements
2551 * is changed, this function may not be near so efficient any more.
2553 * Since the DMA'able buffers are now allocated in a separate
2554 * chunk this algorithm has been modified to match. The '12'
2555 * and '6' factors in scb_size are for the DMA'able command byte
2556 * and sensebuffers respectively. -DaveM
2558 for ( i=step;; i *= 2 )
2560 if ( (scb_size * (i-1)) >= ( (PAGE_SIZE * (i/step)) - 64 ) )
2566 scb_count = min( (i-1), p->scb_data->maxscbs - p->scb_data->numscbs);
2567 scb_ap = kmalloc(sizeof (struct aic7xxx_scb) * scb_count
2568 + sizeof(struct aic7xxx_scb_dma), GFP_ATOMIC);
2571 scb_dma = (struct aic7xxx_scb_dma *)&scb_ap[scb_count];
2572 hsgp = (struct hw_scatterlist *)
2573 pci_alloc_consistent(p->pdev, scb_size * scb_count,
2574 &scb_dma->dma_address);
2580 bufs = (unsigned char *)&hsgp[scb_count * AIC7XXX_MAX_SG];
2581 #ifdef AIC7XXX_VERBOSE_DEBUGGING
2582 if (aic7xxx_verbose > 0xffff)
2584 if (p->scb_data->numscbs == 0)
2585 printk(INFO_LEAD "Allocating initial %ld SCB structures.\n",
2586 p->host_no, -1, -1, -1, scb_count);
2588 printk(INFO_LEAD "Allocating %ld additional SCB structures.\n",
2589 p->host_no, -1, -1, -1, scb_count);
2592 memset(scb_ap, 0, sizeof (struct aic7xxx_scb) * scb_count);
2593 scb_dma->dma_offset = (unsigned long)scb_dma->dma_address
2594 - (unsigned long)hsgp;
2595 scb_dma->dma_len = scb_size * scb_count;
2596 for (i=0; i < scb_count; i++)
2599 scbp->hscb = &p->scb_data->hscbs[p->scb_data->numscbs];
2600 scbp->sg_list = &hsgp[i * AIC7XXX_MAX_SG];
2601 scbp->sense_cmd = bufs;
2602 scbp->cmnd = bufs + 6;
2604 scbp->scb_dma = scb_dma;
2605 memset(scbp->hscb, 0, sizeof(struct aic7xxx_hwscb));
2606 scbp->hscb->tag = p->scb_data->numscbs;
2608 * Place in the scb array; never is removed
2610 p->scb_data->scb_array[p->scb_data->numscbs++] = scbp;
2611 scbq_insert_tail(&p->scb_data->free_scbs, scbp);
2613 scbp->kmalloc_ptr = scb_ap;
2618 /*+F*************************************************************************
2620 * aic7xxx_queue_cmd_complete
2623 * Due to race conditions present in the SCSI subsystem, it is easier
2624 * to queue completed commands, then call scsi_done() on them when
2625 * we're finished. This function queues the completed commands.
2626 *-F*************************************************************************/
2628 aic7xxx_queue_cmd_complete(struct aic7xxx_host *p, struct scsi_cmnd *cmd)
2630 aic7xxx_position(cmd) = SCB_LIST_NULL;
2631 cmd->host_scribble = (char *)p->completeq.head;
2632 p->completeq.head = cmd;
2635 /*+F*************************************************************************
2637 * aic7xxx_done_cmds_complete
2640 * Process the completed command queue.
2641 *-F*************************************************************************/
2642 static void aic7xxx_done_cmds_complete(struct aic7xxx_host *p)
2644 struct scsi_cmnd *cmd;
2646 while (p->completeq.head != NULL) {
2647 cmd = p->completeq.head;
2648 p->completeq.head = (struct scsi_cmnd *) cmd->host_scribble;
2649 cmd->host_scribble = NULL;
2650 cmd->scsi_done(cmd);
2654 /*+F*************************************************************************
2659 * Free the scb and insert into the free scb list.
2660 *-F*************************************************************************/
2662 aic7xxx_free_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
2665 scb->flags = SCB_FREE;
2669 scb->tag_action = 0;
2670 scb->hscb->control = 0;
2671 scb->hscb->target_status = 0;
2672 scb->hscb->target_channel_lun = SCB_LIST_NULL;
2674 scbq_insert_head(&p->scb_data->free_scbs, scb);
2677 /*+F*************************************************************************
2682 * Calls the higher level scsi done function and frees the scb.
2683 *-F*************************************************************************/
2685 aic7xxx_done(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
2687 struct scsi_cmnd *cmd = scb->cmd;
2688 struct aic_dev_data *aic_dev = cmd->device->hostdata;
2689 int tindex = TARGET_INDEX(cmd);
2690 struct aic7xxx_scb *scbp;
2691 unsigned char queue_depth;
2693 if (cmd->use_sg > 1)
2695 struct scatterlist *sg;
2697 sg = (struct scatterlist *)cmd->request_buffer;
2698 pci_unmap_sg(p->pdev, sg, cmd->use_sg, cmd->sc_data_direction);
2700 else if (cmd->request_bufflen)
2701 pci_unmap_single(p->pdev, aic7xxx_mapping(cmd),
2702 cmd->request_bufflen,
2703 cmd->sc_data_direction);
2704 if (scb->flags & SCB_SENSE)
2706 pci_unmap_single(p->pdev,
2707 le32_to_cpu(scb->sg_list[0].address),
2708 sizeof(cmd->sense_buffer),
2709 PCI_DMA_FROMDEVICE);
2711 if (scb->flags & SCB_RECOVERY_SCB)
2713 p->flags &= ~AHC_ABORT_PENDING;
2715 if (scb->flags & (SCB_RESET|SCB_ABORT))
2717 cmd->result |= (DID_RESET << 16);
2720 if ((scb->flags & SCB_MSGOUT_BITS) != 0)
2722 unsigned short mask;
2723 int message_error = FALSE;
2725 mask = 0x01 << tindex;
2728 * Check to see if we get an invalid message or a message error
2729 * after failing to negotiate a wide or sync transfer message.
2731 if ((scb->flags & SCB_SENSE) &&
2732 ((scb->cmd->sense_buffer[12] == 0x43) || /* INVALID_MESSAGE */
2733 (scb->cmd->sense_buffer[12] == 0x49))) /* MESSAGE_ERROR */
2735 message_error = TRUE;
2738 if (scb->flags & SCB_MSGOUT_WDTR)
2742 if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
2743 (aic_dev->flags & DEVICE_PRINT_DTR) )
2745 printk(INFO_LEAD "Device failed to complete Wide Negotiation "
2746 "processing and\n", p->host_no, CTL_OF_SCB(scb));
2747 printk(INFO_LEAD "returned a sense error code for invalid message, "
2748 "disabling future\n", p->host_no, CTL_OF_SCB(scb));
2749 printk(INFO_LEAD "Wide negotiation to this device.\n", p->host_no,
2752 aic_dev->needwdtr = aic_dev->needwdtr_copy = 0;
2755 if (scb->flags & SCB_MSGOUT_SDTR)
2759 if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
2760 (aic_dev->flags & DEVICE_PRINT_DTR) )
2762 printk(INFO_LEAD "Device failed to complete Sync Negotiation "
2763 "processing and\n", p->host_no, CTL_OF_SCB(scb));
2764 printk(INFO_LEAD "returned a sense error code for invalid message, "
2765 "disabling future\n", p->host_no, CTL_OF_SCB(scb));
2766 printk(INFO_LEAD "Sync negotiation to this device.\n", p->host_no,
2768 aic_dev->flags &= ~DEVICE_PRINT_DTR;
2770 aic_dev->needsdtr = aic_dev->needsdtr_copy = 0;
2773 if (scb->flags & SCB_MSGOUT_PPR)
2777 if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
2778 (aic_dev->flags & DEVICE_PRINT_DTR) )
2780 printk(INFO_LEAD "Device failed to complete Parallel Protocol "
2781 "Request processing and\n", p->host_no, CTL_OF_SCB(scb));
2782 printk(INFO_LEAD "returned a sense error code for invalid message, "
2783 "disabling future\n", p->host_no, CTL_OF_SCB(scb));
2784 printk(INFO_LEAD "Parallel Protocol Request negotiation to this "
2785 "device.\n", p->host_no, CTL_OF_SCB(scb));
2788 * Disable PPR negotiation and revert back to WDTR and SDTR setup
2790 aic_dev->needppr = aic_dev->needppr_copy = 0;
2791 aic_dev->needsdtr = aic_dev->needsdtr_copy = 1;
2792 aic_dev->needwdtr = aic_dev->needwdtr_copy = 1;
2797 queue_depth = aic_dev->temp_q_depth;
2798 if (queue_depth >= aic_dev->active_cmds)
2800 scbp = scbq_remove_head(&aic_dev->delayed_scbs);
2803 if (queue_depth == 1)
2806 * Give extra preference to untagged devices, such as CD-R devices
2807 * This makes it more likely that a drive *won't* stuff up while
2808 * waiting on data at a critical time, such as CD-R writing and
2809 * audio CD ripping operations. Should also benefit tape drives.
2811 scbq_insert_head(&p->waiting_scbs, scbp);
2815 scbq_insert_tail(&p->waiting_scbs, scbp);
2817 #ifdef AIC7XXX_VERBOSE_DEBUGGING
2818 if (aic7xxx_verbose > 0xffff)
2819 printk(INFO_LEAD "Moving SCB from delayed to waiting queue.\n",
2820 p->host_no, CTL_OF_SCB(scbp));
2822 if (queue_depth > aic_dev->active_cmds)
2824 scbp = scbq_remove_head(&aic_dev->delayed_scbs);
2826 scbq_insert_tail(&p->waiting_scbs, scbp);
2830 if (!(scb->tag_action))
2832 aic7xxx_index_busy_target(p, scb->hscb->target_channel_lun,
2834 if (cmd->device->simple_tags)
2836 aic_dev->temp_q_depth = aic_dev->max_q_depth;
2839 if(scb->flags & SCB_DTR_SCB)
2841 aic_dev->dtr_pending = 0;
2843 aic_dev->active_cmds--;
2846 if ((scb->sg_length >= 512) && (((cmd->result >> 16) & 0xf) == DID_OK))
2852 if (rq_data_dir(cmd->request) == WRITE)
2855 ptr = aic_dev->w_bins;
2860 ptr = aic_dev->r_bins;
2862 if(cmd->device->simple_tags && cmd->request->cmd_flags & REQ_HARDBARRIER)
2864 aic_dev->barrier_total++;
2865 if(scb->tag_action == MSG_ORDERED_Q_TAG)
2866 aic_dev->ordered_total++;
2881 aic7xxx_free_scb(p, scb);
2882 aic7xxx_queue_cmd_complete(p, cmd);
2886 /*+F*************************************************************************
2888 * aic7xxx_run_done_queue
2891 * Calls the aic7xxx_done() for the scsi_cmnd of each scb in the
2892 * aborted list, and adds each scb to the free list. If complete
2893 * is TRUE, we also process the commands complete list.
2894 *-F*************************************************************************/
2896 aic7xxx_run_done_queue(struct aic7xxx_host *p, /*complete*/ int complete)
2898 struct aic7xxx_scb *scb;
2901 for (i = 0; i < p->scb_data->numscbs; i++)
2903 scb = p->scb_data->scb_array[i];
2904 if (scb->flags & SCB_QUEUED_FOR_DONE)
2906 if (scb->flags & SCB_QUEUE_FULL)
2908 scb->cmd->result = QUEUE_FULL << 1;
2912 if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS))
2913 printk(INFO_LEAD "Aborting scb %d\n",
2914 p->host_no, CTL_OF_SCB(scb), scb->hscb->tag);
2916 * Clear any residual information since the normal aic7xxx_done() path
2917 * doesn't touch the residuals.
2919 scb->hscb->residual_SG_segment_count = 0;
2920 scb->hscb->residual_data_count[0] = 0;
2921 scb->hscb->residual_data_count[1] = 0;
2922 scb->hscb->residual_data_count[2] = 0;
2925 aic7xxx_done(p, scb);
2928 if (aic7xxx_verbose & (VERBOSE_ABORT_RETURN | VERBOSE_RESET_RETURN))
2930 printk(INFO_LEAD "%d commands found and queued for "
2931 "completion.\n", p->host_no, -1, -1, -1, found);
2935 aic7xxx_done_cmds_complete(p);
2939 /*+F*************************************************************************
2941 * aic7xxx_abort_waiting_scb
2944 * Manipulate the waiting for selection list and return the
2945 * scb that follows the one that we remove.
2946 *-F*************************************************************************/
2947 static unsigned char
2948 aic7xxx_abort_waiting_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb,
2949 unsigned char scbpos, unsigned char prev)
2951 unsigned char curscb, next;
2954 * Select the SCB we want to abort and pull the next pointer out of it.
2956 curscb = aic_inb(p, SCBPTR);
2957 aic_outb(p, scbpos, SCBPTR);
2958 next = aic_inb(p, SCB_NEXT);
2960 aic7xxx_add_curscb_to_free_list(p);
2963 * Update the waiting list
2965 if (prev == SCB_LIST_NULL)
2970 aic_outb(p, next, WAITING_SCBH);
2975 * Select the scb that pointed to us and update its next pointer.
2977 aic_outb(p, prev, SCBPTR);
2978 aic_outb(p, next, SCB_NEXT);
2981 * Point us back at the original scb position and inform the SCSI
2982 * system that the command has been aborted.
2984 aic_outb(p, curscb, SCBPTR);
2988 /*+F*************************************************************************
2990 * aic7xxx_search_qinfifo
2993 * Search the queue-in FIFO for matching SCBs and conditionally
2994 * requeue. Returns the number of matching SCBs.
2995 *-F*************************************************************************/
2997 aic7xxx_search_qinfifo(struct aic7xxx_host *p, int target, int channel,
2998 int lun, unsigned char tag, int flags, int requeue,
2999 volatile scb_queue_type *queue)
3002 unsigned char qinpos, qintail;
3003 struct aic7xxx_scb *scbp;
3006 qinpos = aic_inb(p, QINPOS);
3007 qintail = p->qinfifonext;
3009 p->qinfifonext = qinpos;
3011 while (qinpos != qintail)
3013 scbp = p->scb_data->scb_array[p->qinfifo[qinpos++]];
3014 if (aic7xxx_match_scb(p, scbp, target, channel, lun, tag))
3017 * We found an scb that needs to be removed.
3019 if (requeue && (queue != NULL))
3021 if (scbp->flags & SCB_WAITINGQ)
3023 scbq_remove(queue, scbp);
3024 scbq_remove(&p->waiting_scbs, scbp);
3025 scbq_remove(&AIC_DEV(scbp->cmd)->delayed_scbs, scbp);
3026 AIC_DEV(scbp->cmd)->active_cmds++;
3029 scbq_insert_tail(queue, scbp);
3030 AIC_DEV(scbp->cmd)->active_cmds--;
3032 scbp->flags |= SCB_WAITINGQ;
3033 if ( !(scbp->tag_action & TAG_ENB) )
3035 aic7xxx_index_busy_target(p, scbp->hscb->target_channel_lun,
3041 p->qinfifo[p->qinfifonext++] = scbp->hscb->tag;
3046 * Preserve any SCB_RECOVERY_SCB flags on this scb then set the
3047 * flags we were called with, presumeably so aic7xxx_run_done_queue
3050 scbp->flags = flags | (scbp->flags & SCB_RECOVERY_SCB);
3051 if (aic7xxx_index_busy_target(p, scbp->hscb->target_channel_lun,
3052 FALSE) == scbp->hscb->tag)
3054 aic7xxx_index_busy_target(p, scbp->hscb->target_channel_lun,
3062 p->qinfifo[p->qinfifonext++] = scbp->hscb->tag;
3066 * Now that we've done the work, clear out any left over commands in the
3067 * qinfifo and update the KERNEL_QINPOS down on the card.
3069 * NOTE: This routine expect the sequencer to already be paused when
3070 * it is run....make sure it's that way!
3072 qinpos = p->qinfifonext;
3073 while(qinpos != qintail)
3075 p->qinfifo[qinpos++] = SCB_LIST_NULL;
3077 if (p->features & AHC_QUEUE_REGS)
3078 aic_outb(p, p->qinfifonext, HNSCB_QOFF);
3080 aic_outb(p, p->qinfifonext, KERNEL_QINPOS);
3085 /*+F*************************************************************************
3087 * aic7xxx_scb_on_qoutfifo
3090 * Is the scb that was passed to us currently on the qoutfifo?
3091 *-F*************************************************************************/
3093 aic7xxx_scb_on_qoutfifo(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
3097 while(p->qoutfifo[(p->qoutfifonext + i) & 0xff ] != SCB_LIST_NULL)
3099 if(p->qoutfifo[(p->qoutfifonext + i) & 0xff ] == scb->hscb->tag)
3108 /*+F*************************************************************************
3110 * aic7xxx_reset_device
3113 * The device at the given target/channel has been reset. Abort
3114 * all active and queued scbs for that target/channel. This function
3115 * need not worry about linked next pointers because if was a MSG_ABORT_TAG
3116 * then we had a tagged command (no linked next), if it was MSG_ABORT or
3117 * MSG_BUS_DEV_RESET then the device won't know about any commands any more
3118 * and no busy commands will exist, and if it was a bus reset, then nothing
3119 * knows about any linked next commands any more. In all cases, we don't
3120 * need to worry about the linked next or busy scb, we just need to clear
3122 *-F*************************************************************************/
3124 aic7xxx_reset_device(struct aic7xxx_host *p, int target, int channel,
3125 int lun, unsigned char tag)
3127 struct aic7xxx_scb *scbp, *prev_scbp;
3128 struct scsi_device *sd;
3129 unsigned char active_scb, tcl, scb_tag;
3130 int i = 0, init_lists = FALSE;
3131 struct aic_dev_data *aic_dev;
3134 * Restore this when we're done
3136 active_scb = aic_inb(p, SCBPTR);
3137 scb_tag = aic_inb(p, SCB_TAG);
3139 if (aic7xxx_verbose & (VERBOSE_RESET_PROCESS | VERBOSE_ABORT_PROCESS))
3141 printk(INFO_LEAD "Reset device, hardware_scb %d,\n",
3142 p->host_no, channel, target, lun, active_scb);
3143 printk(INFO_LEAD "Current scb %d, SEQADDR 0x%x, LASTPHASE "
3145 p->host_no, channel, target, lun, scb_tag,
3146 aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8),
3147 aic_inb(p, LASTPHASE));
3148 printk(INFO_LEAD "SG_CACHEPTR 0x%x, SG_COUNT %d, SCSISIGI 0x%x\n",
3149 p->host_no, channel, target, lun,
3150 (p->features & AHC_ULTRA2) ? aic_inb(p, SG_CACHEPTR) : 0,
3151 aic_inb(p, SG_COUNT), aic_inb(p, SCSISIGI));
3152 printk(INFO_LEAD "SSTAT0 0x%x, SSTAT1 0x%x, SSTAT2 0x%x\n",
3153 p->host_no, channel, target, lun, aic_inb(p, SSTAT0),
3154 aic_inb(p, SSTAT1), aic_inb(p, SSTAT2));
3158 * Deal with the busy target and linked next issues.
3160 list_for_each_entry(aic_dev, &p->aic_devs, list)
3162 if (aic7xxx_verbose & (VERBOSE_RESET_PROCESS | VERBOSE_ABORT_PROCESS))
3163 printk(INFO_LEAD "processing aic_dev %p\n", p->host_no, channel, target,
3165 sd = aic_dev->SDptr;
3167 if((target != ALL_TARGETS && target != sd->id) ||
3168 (channel != ALL_CHANNELS && channel != sd->channel))
3170 if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS))
3171 printk(INFO_LEAD "Cleaning up status information "
3172 "and delayed_scbs.\n", p->host_no, sd->channel, sd->id, sd->lun);
3173 aic_dev->flags &= ~BUS_DEVICE_RESET_PENDING;
3174 if ( tag == SCB_LIST_NULL )
3176 aic_dev->dtr_pending = 0;
3177 aic_dev->needppr = aic_dev->needppr_copy;
3178 aic_dev->needsdtr = aic_dev->needsdtr_copy;
3179 aic_dev->needwdtr = aic_dev->needwdtr_copy;
3180 aic_dev->flags = DEVICE_PRINT_DTR;
3181 aic_dev->temp_q_depth = aic_dev->max_q_depth;
3183 tcl = (sd->id << 4) | (sd->channel << 3) | sd->lun;
3184 if ( (aic7xxx_index_busy_target(p, tcl, FALSE) == tag) ||
3185 (tag == SCB_LIST_NULL) )
3186 aic7xxx_index_busy_target(p, tcl, /* unbusy */ TRUE);
3188 scbp = aic_dev->delayed_scbs.head;
3189 while (scbp != NULL)
3192 scbp = scbp->q_next;
3193 if (aic7xxx_match_scb(p, prev_scbp, target, channel, lun, tag))
3195 scbq_remove(&aic_dev->delayed_scbs, prev_scbp);
3196 if (prev_scbp->flags & SCB_WAITINGQ)
3198 aic_dev->active_cmds++;
3201 prev_scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ);
3202 prev_scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE;
3207 if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS))
3208 printk(INFO_LEAD "Cleaning QINFIFO.\n", p->host_no, channel, target, lun );
3209 aic7xxx_search_qinfifo(p, target, channel, lun, tag,
3210 SCB_RESET | SCB_QUEUED_FOR_DONE, /* requeue */ FALSE, NULL);
3213 * Search the waiting_scbs queue for matches, this catches any SCB_QUEUED
3214 * ABORT/RESET commands.
3216 if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS))
3217 printk(INFO_LEAD "Cleaning waiting_scbs.\n", p->host_no, channel,
3220 struct aic7xxx_scb *scbp, *prev_scbp;
3223 scbp = p->waiting_scbs.head;
3224 while (scbp != NULL)
3227 scbp = scbp->q_next;
3228 if (aic7xxx_match_scb(p, prev_scbp, target, channel, lun, tag))
3230 scbq_remove(&p->waiting_scbs, prev_scbp);
3231 if (prev_scbp->flags & SCB_WAITINGQ)
3233 AIC_DEV(prev_scbp->cmd)->active_cmds++;
3236 prev_scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ);
3237 prev_scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE;
3244 * Search waiting for selection list.
3246 if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS))
3247 printk(INFO_LEAD "Cleaning waiting for selection "
3248 "list.\n", p->host_no, channel, target, lun);
3250 unsigned char next, prev, scb_index;
3252 next = aic_inb(p, WAITING_SCBH); /* Start at head of list. */
3253 prev = SCB_LIST_NULL;
3254 while (next != SCB_LIST_NULL)
3256 aic_outb(p, next, SCBPTR);
3257 scb_index = aic_inb(p, SCB_TAG);
3258 if (scb_index >= p->scb_data->numscbs)
3261 * No aic7xxx_verbose check here.....we want to see this since it
3262 * means either the kernel driver or the sequencer screwed things up
3264 printk(WARN_LEAD "Waiting List inconsistency; SCB index=%d, "
3265 "numscbs=%d\n", p->host_no, channel, target, lun, scb_index,
3266 p->scb_data->numscbs);
3267 next = aic_inb(p, SCB_NEXT);
3268 aic7xxx_add_curscb_to_free_list(p);
3272 scbp = p->scb_data->scb_array[scb_index];
3273 if (aic7xxx_match_scb(p, scbp, target, channel, lun, tag))
3275 next = aic7xxx_abort_waiting_scb(p, scbp, next, prev);
3276 if (scbp->flags & SCB_WAITINGQ)
3278 AIC_DEV(scbp->cmd)->active_cmds++;
3281 scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ);
3282 scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE;
3283 if (prev == SCB_LIST_NULL)
3286 * This is either the first scb on the waiting list, or we
3287 * have already yanked the first and haven't left any behind.
3288 * Either way, we need to turn off the selection hardware if
3289 * it isn't already off.
3291 aic_outb(p, aic_inb(p, SCSISEQ) & ~ENSELO, SCSISEQ);
3292 aic_outb(p, CLRSELTIMEO, CLRSINT1);
3298 next = aic_inb(p, SCB_NEXT);
3305 * Go through disconnected list and remove any entries we have queued
3306 * for completion, zeroing their control byte too.
3308 if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS))
3309 printk(INFO_LEAD "Cleaning disconnected scbs "
3310 "list.\n", p->host_no, channel, target, lun);
3311 if (p->flags & AHC_PAGESCBS)
3313 unsigned char next, prev, scb_index;
3315 next = aic_inb(p, DISCONNECTED_SCBH);
3316 prev = SCB_LIST_NULL;
3317 while (next != SCB_LIST_NULL)
3319 aic_outb(p, next, SCBPTR);
3320 scb_index = aic_inb(p, SCB_TAG);
3321 if (scb_index > p->scb_data->numscbs)
3323 printk(WARN_LEAD "Disconnected List inconsistency; SCB index=%d, "
3324 "numscbs=%d\n", p->host_no, channel, target, lun, scb_index,
3325 p->scb_data->numscbs);
3326 next = aic7xxx_rem_scb_from_disc_list(p, next, prev);
3330 scbp = p->scb_data->scb_array[scb_index];
3331 if (aic7xxx_match_scb(p, scbp, target, channel, lun, tag))
3333 next = aic7xxx_rem_scb_from_disc_list(p, next, prev);
3334 if (scbp->flags & SCB_WAITINGQ)
3336 AIC_DEV(scbp->cmd)->active_cmds++;
3339 scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ);
3340 scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE;
3341 scbp->hscb->control = 0;
3346 next = aic_inb(p, SCB_NEXT);
3353 * Walk the free list making sure no entries on the free list have
3354 * a valid SCB_TAG value or SCB_CONTROL byte.
3356 if (p->flags & AHC_PAGESCBS)
3360 next = aic_inb(p, FREE_SCBH);
3361 while (next != SCB_LIST_NULL)
3363 aic_outb(p, next, SCBPTR);
3364 if (aic_inb(p, SCB_TAG) < p->scb_data->numscbs)
3366 printk(WARN_LEAD "Free list inconsistency!.\n", p->host_no, channel,
3369 next = SCB_LIST_NULL;
3373 aic_outb(p, SCB_LIST_NULL, SCB_TAG);
3374 aic_outb(p, 0, SCB_CONTROL);
3375 next = aic_inb(p, SCB_NEXT);
3381 * Go through the hardware SCB array looking for commands that
3382 * were active but not on any list.
3386 aic_outb(p, SCB_LIST_NULL, FREE_SCBH);
3387 aic_outb(p, SCB_LIST_NULL, WAITING_SCBH);
3388 aic_outb(p, SCB_LIST_NULL, DISCONNECTED_SCBH);
3390 for (i = p->scb_data->maxhscbs - 1; i >= 0; i--)
3392 unsigned char scbid;
3394 aic_outb(p, i, SCBPTR);
3397 aic_outb(p, SCB_LIST_NULL, SCB_TAG);
3398 aic_outb(p, SCB_LIST_NULL, SCB_NEXT);
3399 aic_outb(p, 0, SCB_CONTROL);
3400 aic7xxx_add_curscb_to_free_list(p);
3404 scbid = aic_inb(p, SCB_TAG);
3405 if (scbid < p->scb_data->numscbs)
3407 scbp = p->scb_data->scb_array[scbid];
3408 if (aic7xxx_match_scb(p, scbp, target, channel, lun, tag))
3410 aic_outb(p, 0, SCB_CONTROL);
3411 aic_outb(p, SCB_LIST_NULL, SCB_TAG);
3412 aic7xxx_add_curscb_to_free_list(p);
3419 * Go through the entire SCB array now and look for commands for
3420 * for this target that are stillactive. These are other (most likely
3421 * tagged) commands that were disconnected when the reset occurred.
3422 * Any commands we find here we know this about, it wasn't on any queue,
3423 * it wasn't in the qinfifo, it wasn't in the disconnected or waiting
3424 * lists, so it really must have been a paged out SCB. In that case,
3425 * we shouldn't need to bother with updating any counters, just mark
3426 * the correct flags and go on.
3428 for (i = 0; i < p->scb_data->numscbs; i++)
3430 scbp = p->scb_data->scb_array[i];
3431 if ((scbp->flags & SCB_ACTIVE) &&
3432 aic7xxx_match_scb(p, scbp, target, channel, lun, tag) &&
3433 !aic7xxx_scb_on_qoutfifo(p, scbp))
3435 if (scbp->flags & SCB_WAITINGQ)
3437 scbq_remove(&p->waiting_scbs, scbp);
3438 scbq_remove(&AIC_DEV(scbp->cmd)->delayed_scbs, scbp);
3439 AIC_DEV(scbp->cmd)->active_cmds++;
3442 scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE;
3443 scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ);
3447 aic_outb(p, active_scb, SCBPTR);
3451 /*+F*************************************************************************
3453 * aic7xxx_clear_intstat
3456 * Clears the interrupt status.
3457 *-F*************************************************************************/
3459 aic7xxx_clear_intstat(struct aic7xxx_host *p)
3461 /* Clear any interrupt conditions this may have caused. */
3462 aic_outb(p, CLRSELDO | CLRSELDI | CLRSELINGO, CLRSINT0);
3463 aic_outb(p, CLRSELTIMEO | CLRATNO | CLRSCSIRSTI | CLRBUSFREE | CLRSCSIPERR |
3464 CLRPHASECHG | CLRREQINIT, CLRSINT1);
3465 aic_outb(p, CLRSCSIINT | CLRSEQINT | CLRBRKADRINT | CLRPARERR, CLRINT);
3468 /*+F*************************************************************************
3470 * aic7xxx_reset_current_bus
3473 * Reset the current SCSI bus.
3474 *-F*************************************************************************/
3476 aic7xxx_reset_current_bus(struct aic7xxx_host *p)
3479 /* Disable reset interrupts. */
3480 aic_outb(p, aic_inb(p, SIMODE1) & ~ENSCSIRST, SIMODE1);
3482 /* Turn off the bus' current operations, after all, we shouldn't have any
3483 * valid commands left to cause a RSELI and SELO once we've tossed the
3484 * bus away with this reset, so we might as well shut down the sequencer
3485 * until the bus is restarted as oppossed to saving the current settings
3486 * and restoring them (which makes no sense to me). */
3488 /* Turn on the bus reset. */
3489 aic_outb(p, aic_inb(p, SCSISEQ) | SCSIRSTO, SCSISEQ);
3490 while ( (aic_inb(p, SCSISEQ) & SCSIRSTO) == 0)
3494 * Some of the new Ultra2 chipsets need a longer delay after a chip
3495 * reset than just the init setup creates, so we have to delay here
3496 * before we go into a reset in order to make the chips happy.
3498 if (p->features & AHC_ULTRA2)
3503 /* Turn off the bus reset. */
3504 aic_outb(p, 0, SCSISEQ);
3507 aic7xxx_clear_intstat(p);
3508 /* Re-enable reset interrupts. */
3509 aic_outb(p, aic_inb(p, SIMODE1) | ENSCSIRST, SIMODE1);
3513 /*+F*************************************************************************
3515 * aic7xxx_reset_channel
3518 * Reset the channel.
3519 *-F*************************************************************************/
3521 aic7xxx_reset_channel(struct aic7xxx_host *p, int channel, int initiate_reset)
3523 unsigned long offset_min, offset_max;
3524 unsigned char sblkctl;
3527 if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
3528 printk(INFO_LEAD "Reset channel called, %s initiate reset.\n",
3529 p->host_no, channel, -1, -1, (initiate_reset==TRUE) ? "will" : "won't" );
3539 if (p->features & AHC_TWIN)
3548 if (p->features & AHC_WIDE)
3559 while (offset_min < offset_max)
3562 * Revert to async/narrow transfers until we renegotiate.
3564 aic_outb(p, 0, TARG_SCSIRATE + offset_min);
3565 if (p->features & AHC_ULTRA2)
3567 aic_outb(p, 0, TARG_OFFSET + offset_min);
3573 * Reset the bus and unpause/restart the controller
3575 sblkctl = aic_inb(p, SBLKCTL);
3576 if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 )
3577 cur_channel = (sblkctl & SELBUSB) >> 3;
3580 if ( (cur_channel != channel) && (p->features & AHC_TWIN) )
3583 * Case 1: Command for another bus is active
3585 if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
3586 printk(INFO_LEAD "Stealthily resetting idle channel.\n", p->host_no,
3589 * Stealthily reset the other bus without upsetting the current bus.
3591 aic_outb(p, sblkctl ^ SELBUSB, SBLKCTL);
3592 aic_outb(p, aic_inb(p, SIMODE1) & ~ENBUSFREE, SIMODE1);
3595 aic7xxx_reset_current_bus(p);
3597 aic_outb(p, aic_inb(p, SCSISEQ) & (ENSELI|ENRSELI|ENAUTOATNP), SCSISEQ);
3598 aic7xxx_clear_intstat(p);
3599 aic_outb(p, sblkctl, SBLKCTL);
3604 * Case 2: A command from this bus is active or we're idle.
3606 if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
3607 printk(INFO_LEAD "Resetting currently active channel.\n", p->host_no,
3609 aic_outb(p, aic_inb(p, SIMODE1) & ~(ENBUSFREE|ENREQINIT),
3611 p->flags &= ~AHC_HANDLING_REQINITS;
3612 p->msg_type = MSG_TYPE_NONE;
3616 aic7xxx_reset_current_bus(p);
3618 aic_outb(p, aic_inb(p, SCSISEQ) & (ENSELI|ENRSELI|ENAUTOATNP), SCSISEQ);
3619 aic7xxx_clear_intstat(p);
3621 if (aic7xxx_verbose & VERBOSE_RESET_RETURN)
3622 printk(INFO_LEAD "Channel reset\n", p->host_no, channel, -1, -1);
3624 * Clean up all the state information for the pending transactions
3627 aic7xxx_reset_device(p, ALL_TARGETS, channel, ALL_LUNS, SCB_LIST_NULL);
3629 if ( !(p->features & AHC_TWIN) )
3631 restart_sequencer(p);
3637 /*+F*************************************************************************
3639 * aic7xxx_run_waiting_queues
3642 * Scan the awaiting_scbs queue downloading and starting as many
3644 *-F*************************************************************************/
3646 aic7xxx_run_waiting_queues(struct aic7xxx_host *p)
3648 struct aic7xxx_scb *scb;
3649 struct aic_dev_data *aic_dev;
3653 if (p->waiting_scbs.head == NULL)
3659 * First handle SCBs that are waiting but have been assigned a slot.
3661 while ((scb = scbq_remove_head(&p->waiting_scbs)) != NULL)
3663 aic_dev = scb->cmd->device->hostdata;
3664 if ( !scb->tag_action )
3666 aic_dev->temp_q_depth = 1;
3668 if ( aic_dev->active_cmds >= aic_dev->temp_q_depth)
3670 scbq_insert_tail(&aic_dev->delayed_scbs, scb);
3674 scb->flags &= ~SCB_WAITINGQ;
3675 aic_dev->active_cmds++;
3677 if ( !(scb->tag_action) )
3679 aic7xxx_busy_target(p, scb);
3681 p->qinfifo[p->qinfifonext++] = scb->hscb->tag;
3687 if (p->features & AHC_QUEUE_REGS)
3688 aic_outb(p, p->qinfifonext, HNSCB_QOFF);
3692 aic_outb(p, p->qinfifonext, KERNEL_QINPOS);
3693 unpause_sequencer(p, FALSE);
3695 if (p->activescbs > p->max_activescbs)
3696 p->max_activescbs = p->activescbs;
3709 /*+F*************************************************************************
3714 * Check the scsi card for PCI errors and clear the interrupt
3716 * NOTE: If you don't have this function and a 2940 card encounters
3717 * a PCI error condition, the machine will end up locked as the
3718 * interrupt handler gets slammed with non-stop PCI error interrupts
3719 *-F*************************************************************************/
3721 aic7xxx_pci_intr(struct aic7xxx_host *p)
3723 unsigned char status1;
3725 pci_read_config_byte(p->pdev, PCI_STATUS + 1, &status1);
3727 if ( (status1 & DPE) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) )
3728 printk(WARN_LEAD "Data Parity Error during PCI address or PCI write"
3729 "phase.\n", p->host_no, -1, -1, -1);
3730 if ( (status1 & SSE) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) )
3731 printk(WARN_LEAD "Signal System Error Detected\n", p->host_no,
3733 if ( (status1 & RMA) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) )
3734 printk(WARN_LEAD "Received a PCI Master Abort\n", p->host_no,
3736 if ( (status1 & RTA) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) )
3737 printk(WARN_LEAD "Received a PCI Target Abort\n", p->host_no,
3739 if ( (status1 & STA) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) )
3740 printk(WARN_LEAD "Signaled a PCI Target Abort\n", p->host_no,
3742 if ( (status1 & DPR) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) )
3743 printk(WARN_LEAD "Data Parity Error has been reported via PCI pin "
3744 "PERR#\n", p->host_no, -1, -1, -1);
3746 pci_write_config_byte(p->pdev, PCI_STATUS + 1, status1);
3747 if (status1 & (DPR|RMA|RTA))
3748 aic_outb(p, CLRPARERR, CLRINT);
3750 if ( (aic7xxx_panic_on_abort) && (p->spurious_int > 500) )
3751 aic7xxx_panic_abort(p, NULL);
3754 #endif /* CONFIG_PCI */
3756 /*+F*************************************************************************
3758 * aic7xxx_construct_ppr
3761 * Build up a Parallel Protocol Request message for use with SCSI-3
3763 *-F*************************************************************************/
3765 aic7xxx_construct_ppr(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
3767 p->msg_buf[p->msg_index++] = MSG_EXTENDED;
3768 p->msg_buf[p->msg_index++] = MSG_EXT_PPR_LEN;
3769 p->msg_buf[p->msg_index++] = MSG_EXT_PPR;
3770 p->msg_buf[p->msg_index++] = AIC_DEV(scb->cmd)->goal.period;
3771 p->msg_buf[p->msg_index++] = 0;
3772 p->msg_buf[p->msg_index++] = AIC_DEV(scb->cmd)->goal.offset;
3773 p->msg_buf[p->msg_index++] = AIC_DEV(scb->cmd)->goal.width;
3774 p->msg_buf[p->msg_index++] = AIC_DEV(scb->cmd)->goal.options;
3778 /*+F*************************************************************************
3780 * aic7xxx_construct_sdtr
3783 * Constucts a synchronous data transfer message in the message
3784 * buffer on the sequencer.
3785 *-F*************************************************************************/
3787 aic7xxx_construct_sdtr(struct aic7xxx_host *p, unsigned char period,
3788 unsigned char offset)
3790 p->msg_buf[p->msg_index++] = MSG_EXTENDED;
3791 p->msg_buf[p->msg_index++] = MSG_EXT_SDTR_LEN;
3792 p->msg_buf[p->msg_index++] = MSG_EXT_SDTR;
3793 p->msg_buf[p->msg_index++] = period;
3794 p->msg_buf[p->msg_index++] = offset;
3798 /*+F*************************************************************************
3800 * aic7xxx_construct_wdtr
3803 * Constucts a wide data transfer message in the message buffer
3805 *-F*************************************************************************/
3807 aic7xxx_construct_wdtr(struct aic7xxx_host *p, unsigned char bus_width)
3809 p->msg_buf[p->msg_index++] = MSG_EXTENDED;
3810 p->msg_buf[p->msg_index++] = MSG_EXT_WDTR_LEN;
3811 p->msg_buf[p->msg_index++] = MSG_EXT_WDTR;
3812 p->msg_buf[p->msg_index++] = bus_width;
3816 /*+F*************************************************************************
3818 * aic7xxx_calc_residual
3821 * Calculate the residual data not yet transferred.
3822 *-F*************************************************************************/
3824 aic7xxx_calculate_residual (struct aic7xxx_host *p, struct aic7xxx_scb *scb)
3826 struct aic7xxx_hwscb *hscb;
3827 struct scsi_cmnd *cmd;
3834 * Don't destroy valid residual information with
3835 * residual coming from a check sense operation.
3837 if (((scb->hscb->control & DISCONNECTED) == 0) &&
3838 (scb->flags & SCB_SENSE) == 0)
3841 * We had an underflow. At this time, there's only
3842 * one other driver that bothers to check for this,
3843 * and cmd->underflow seems to be set rather half-
3844 * heartedly in the higher-level SCSI code.
3846 actual = scb->sg_length;
3847 for (i=1; i < hscb->residual_SG_segment_count; i++)
3849 actual -= scb->sg_list[scb->sg_count - i].length;
3851 actual -= (hscb->residual_data_count[2] << 16) |
3852 (hscb->residual_data_count[1] << 8) |
3853 hscb->residual_data_count[0];
3855 if (actual < cmd->underflow)
3857 if (aic7xxx_verbose & VERBOSE_MINOR_ERROR)
3859 printk(INFO_LEAD "Underflow - Wanted %u, %s %u, residual SG "
3860 "count %d.\n", p->host_no, CTL_OF_SCB(scb), cmd->underflow,
3861 (rq_data_dir(cmd->request) == WRITE) ? "wrote" : "read", actual,
3862 hscb->residual_SG_segment_count);
3863 printk(INFO_LEAD "status 0x%x.\n", p->host_no, CTL_OF_SCB(scb),
3864 hscb->target_status);
3867 * In 2.4, only send back the residual information, don't flag this
3868 * as an error. Before 2.4 we had to flag this as an error because
3869 * the mid layer didn't check residual data counts to see if the
3870 * command needs retried.
3872 cmd->resid = scb->sg_length - actual;
3873 aic7xxx_status(cmd) = hscb->target_status;
3878 * Clean out the residual information in the SCB for the
3881 hscb->residual_data_count[2] = 0;
3882 hscb->residual_data_count[1] = 0;
3883 hscb->residual_data_count[0] = 0;
3884 hscb->residual_SG_segment_count = 0;
3887 /*+F*************************************************************************
3889 * aic7xxx_handle_device_reset
3892 * Interrupt handler for sequencer interrupts (SEQINT).
3893 *-F*************************************************************************/
3895 aic7xxx_handle_device_reset(struct aic7xxx_host *p, int target, int channel)
3897 unsigned char tindex = target;
3899 tindex |= ((channel & 0x01) << 3);
3902 * Go back to async/narrow transfers and renegotiate.
3904 aic_outb(p, 0, TARG_SCSIRATE + tindex);
3905 if (p->features & AHC_ULTRA2)
3906 aic_outb(p, 0, TARG_OFFSET + tindex);
3907 aic7xxx_reset_device(p, target, channel, ALL_LUNS, SCB_LIST_NULL);
3908 if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
3909 printk(INFO_LEAD "Bus Device Reset delivered.\n", p->host_no, channel,
3911 aic7xxx_run_done_queue(p, /*complete*/ TRUE);
3914 /*+F*************************************************************************
3916 * aic7xxx_handle_seqint
3919 * Interrupt handler for sequencer interrupts (SEQINT).
3920 *-F*************************************************************************/
3922 aic7xxx_handle_seqint(struct aic7xxx_host *p, unsigned char intstat)
3924 struct aic7xxx_scb *scb;
3925 struct aic_dev_data *aic_dev;
3926 unsigned short target_mask;
3927 unsigned char target, lun, tindex;
3928 unsigned char queue_flag = FALSE;
3932 target = ((aic_inb(p, SAVED_TCL) >> 4) & 0x0f);
3933 if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 )
3934 channel = (aic_inb(p, SBLKCTL) & SELBUSB) >> 3;
3937 tindex = target + (channel << 3);
3938 lun = aic_inb(p, SAVED_TCL) & 0x07;
3939 target_mask = (0x01 << tindex);
3942 * Go ahead and clear the SEQINT now, that avoids any interrupt race
3943 * conditions later on in case we enable some other interrupt.
3945 aic_outb(p, CLRSEQINT, CLRINT);
3946 switch (intstat & SEQINT_MASK)
3950 aic_outb(p, aic_inb(p, SCSISEQ) & (ENSELI|ENRSELI|ENAUTOATNP),
3952 printk(WARN_LEAD "No active SCB for reconnecting target - Issuing "
3953 "BUS DEVICE RESET.\n", p->host_no, channel, target, lun);
3954 printk(WARN_LEAD " SAVED_TCL=0x%x, ARG_1=0x%x, SEQADDR=0x%x\n",
3955 p->host_no, channel, target, lun,
3956 aic_inb(p, SAVED_TCL), aic_inb(p, ARG_1),
3957 (aic_inb(p, SEQADDR1) << 8) | aic_inb(p, SEQADDR0));
3958 if (aic7xxx_panic_on_abort)
3959 aic7xxx_panic_abort(p, NULL);
3965 if (aic7xxx_verbose & VERBOSE_MINOR_ERROR)
3966 printk(INFO_LEAD "Rejecting unknown message (0x%x) received from "
3967 "target, SEQ_FLAGS=0x%x\n", p->host_no, channel, target, lun,
3968 aic_inb(p, ACCUM), aic_inb(p, SEQ_FLAGS));
3975 * The reconnecting target either did not send an identify
3976 * message, or did, but we didn't find an SCB to match and
3977 * before it could respond to our ATN/abort, it hit a dataphase.
3978 * The only safe thing to do is to blow it away with a bus
3981 if (aic7xxx_verbose & (VERBOSE_SEQINT | VERBOSE_RESET_MID))
3982 printk(INFO_LEAD "Target did not send an IDENTIFY message; "
3983 "LASTPHASE 0x%x, SAVED_TCL 0x%x\n", p->host_no, channel, target,
3984 lun, aic_inb(p, LASTPHASE), aic_inb(p, SAVED_TCL));
3986 aic7xxx_reset_channel(p, channel, /*initiate reset*/ TRUE);
3987 aic7xxx_run_done_queue(p, TRUE);
3993 if (aic_inb(p, LASTPHASE) == P_BUSFREE)
3995 if (aic7xxx_verbose & VERBOSE_SEQINT)
3996 printk(INFO_LEAD "Missed busfree.\n", p->host_no, channel,
3998 restart_sequencer(p);
4002 if (aic7xxx_verbose & VERBOSE_SEQINT)
4003 printk(INFO_LEAD "Unknown scsi bus phase, continuing\n", p->host_no,
4004 channel, target, lun);
4010 p->msg_type = MSG_TYPE_INITIATOR_MSGIN;
4014 #ifdef AIC7XXX_VERBOSE_DEBUGGING
4015 if (aic7xxx_verbose > 0xffff)
4016 printk(INFO_LEAD "Enabling REQINITs for MSG_IN\n", p->host_no,
4017 channel, target, lun);
4021 * To actually receive the message, simply turn on
4022 * REQINIT interrupts and let our interrupt handler
4023 * do the rest (REQINIT should already be true).
4025 p->flags |= AHC_HANDLING_REQINITS;
4026 aic_outb(p, aic_inb(p, SIMODE1) | ENREQINIT, SIMODE1);
4029 * We don't want the sequencer unpaused yet so we return early
4037 * What we care about here is if we had an outstanding SDTR
4038 * or WDTR message for this target. If we did, this is a
4039 * signal that the target is refusing negotiation.
4041 unsigned char scb_index;
4042 unsigned char last_msg;
4044 scb_index = aic_inb(p, SCB_TAG);
4045 scb = p->scb_data->scb_array[scb_index];
4046 aic_dev = AIC_DEV(scb->cmd);
4047 last_msg = aic_inb(p, LAST_MSG);
4049 if ( (last_msg == MSG_IDENTIFYFLAG) &&
4050 (scb->tag_action) &&
4051 !(scb->flags & SCB_MSGOUT_BITS) )
4053 if (scb->tag_action == MSG_ORDERED_Q_TAG)
4056 * OK...the device seems able to accept tagged commands, but
4057 * not ordered tag commands, only simple tag commands. So, we
4058 * disable ordered tag commands and go on with life just like
4061 scsi_adjust_queue_depth(scb->cmd->device, MSG_SIMPLE_TAG,
4062 scb->cmd->device->queue_depth);
4063 scb->tag_action = MSG_SIMPLE_Q_TAG;
4064 scb->hscb->control &= ~SCB_TAG_TYPE;
4065 scb->hscb->control |= MSG_SIMPLE_Q_TAG;
4066 aic_outb(p, scb->hscb->control, SCB_CONTROL);
4068 * OK..we set the tag type to simple tag command, now we re-assert
4069 * ATNO and hope this will take us into the identify phase again
4070 * so we can resend the tag type and info to the device.
4072 aic_outb(p, MSG_IDENTIFYFLAG, MSG_OUT);
4073 aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO);
4075 else if (scb->tag_action == MSG_SIMPLE_Q_TAG)
4078 struct aic7xxx_scb *scbp;
4081 * Hmmmm....the device is flaking out on tagged commands.
4083 scsi_adjust_queue_depth(scb->cmd->device, 0 /* untagged */,
4084 p->host->cmd_per_lun);
4085 aic_dev->max_q_depth = aic_dev->temp_q_depth = 1;
4087 * We set this command up as a bus device reset. However, we have
4088 * to clear the tag type as it's causing us problems. We shouldnt
4089 * have to worry about any other commands being active, since if
4090 * the device is refusing tagged commands, this should be the
4091 * first tagged command sent to the device, however, we do have
4092 * to worry about any other tagged commands that may already be
4093 * in the qinfifo. The easiest way to do this, is to issue a BDR,
4094 * send all the commands back to the mid level code, then let them
4095 * come back and get rebuilt as untagged commands.
4097 scb->tag_action = 0;
4098 scb->hscb->control &= ~(TAG_ENB | SCB_TAG_TYPE);
4099 aic_outb(p, scb->hscb->control, SCB_CONTROL);
4101 old_verbose = aic7xxx_verbose;
4102 aic7xxx_verbose &= ~(VERBOSE_RESET|VERBOSE_ABORT);
4103 for (i=0; i < p->scb_data->numscbs; i++)
4105 scbp = p->scb_data->scb_array[i];
4106 if ((scbp->flags & SCB_ACTIVE) && (scbp != scb))
4108 if (aic7xxx_match_scb(p, scbp, target, channel, lun, i))
4110 aic7xxx_reset_device(p, target, channel, lun, i);
4114 aic7xxx_run_done_queue(p, TRUE);
4115 aic7xxx_verbose = old_verbose;
4117 * Wait until after the for loop to set the busy index since
4118 * aic7xxx_reset_device will clear the busy index during its
4121 aic7xxx_busy_target(p, scb);
4122 printk(INFO_LEAD "Device is refusing tagged commands, using "
4123 "untagged I/O.\n", p->host_no, channel, target, lun);
4124 aic_outb(p, MSG_IDENTIFYFLAG, MSG_OUT);
4125 aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO);
4128 else if (scb->flags & SCB_MSGOUT_PPR)
4131 * As per the draft specs, any device capable of supporting any of
4132 * the option values other than 0 are not allowed to reject the
4133 * PPR message. Instead, they must negotiate out what they do
4134 * support instead of rejecting our offering or else they cause
4135 * a parity error during msg_out phase to signal that they don't
4136 * like our settings.
4138 aic_dev->needppr = aic_dev->needppr_copy = 0;
4139 aic7xxx_set_width(p, target, channel, lun, MSG_EXT_WDTR_BUS_8_BIT,
4140 (AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE), aic_dev);
4141 aic7xxx_set_syncrate(p, NULL, target, channel, 0, 0, 0,
4142 AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE,
4144 aic_dev->goal.options = aic_dev->dtr_pending = 0;
4145 scb->flags &= ~SCB_MSGOUT_BITS;
4146 if(aic7xxx_verbose & VERBOSE_NEGOTIATION2)
4148 printk(INFO_LEAD "Device is rejecting PPR messages, falling "
4149 "back.\n", p->host_no, channel, target, lun);
4151 if ( aic_dev->goal.width )
4153 aic_dev->needwdtr = aic_dev->needwdtr_copy = 1;
4154 aic_dev->dtr_pending = 1;
4155 scb->flags |= SCB_MSGOUT_WDTR;
4157 if ( aic_dev->goal.offset )
4159 aic_dev->needsdtr = aic_dev->needsdtr_copy = 1;
4160 if( !aic_dev->dtr_pending )
4162 aic_dev->dtr_pending = 1;
4163 scb->flags |= SCB_MSGOUT_SDTR;
4166 if ( aic_dev->dtr_pending )
4168 aic_outb(p, HOST_MSG, MSG_OUT);
4169 aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO);
4172 else if (scb->flags & SCB_MSGOUT_WDTR)
4175 * note 8bit xfers and clear flag
4177 aic_dev->needwdtr = aic_dev->needwdtr_copy = 0;
4178 scb->flags &= ~SCB_MSGOUT_BITS;
4179 aic7xxx_set_width(p, target, channel, lun, MSG_EXT_WDTR_BUS_8_BIT,
4180 (AHC_TRANS_ACTIVE|AHC_TRANS_GOAL|AHC_TRANS_CUR), aic_dev);
4181 aic7xxx_set_syncrate(p, NULL, target, channel, 0, 0, 0,
4182 AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE,
4184 if(aic7xxx_verbose & VERBOSE_NEGOTIATION2)
4186 printk(INFO_LEAD "Device is rejecting WDTR messages, using "
4187 "narrow transfers.\n", p->host_no, channel, target, lun);
4189 aic_dev->needsdtr = aic_dev->needsdtr_copy;
4191 else if (scb->flags & SCB_MSGOUT_SDTR)
4194 * note asynch xfers and clear flag
4196 aic_dev->needsdtr = aic_dev->needsdtr_copy = 0;
4197 scb->flags &= ~SCB_MSGOUT_BITS;
4198 aic7xxx_set_syncrate(p, NULL, target, channel, 0, 0, 0,
4199 (AHC_TRANS_CUR|AHC_TRANS_ACTIVE|AHC_TRANS_GOAL), aic_dev);
4200 if(aic7xxx_verbose & VERBOSE_NEGOTIATION2)
4202 printk(INFO_LEAD "Device is rejecting SDTR messages, using "
4203 "async transfers.\n", p->host_no, channel, target, lun);
4206 else if (aic7xxx_verbose & VERBOSE_SEQINT)
4209 * Otherwise, we ignore it.
4211 printk(INFO_LEAD "Received MESSAGE_REJECT for unknown cause. "
4212 "Ignoring.\n", p->host_no, channel, target, lun);
4219 unsigned char scb_index;
4220 struct aic7xxx_hwscb *hscb;
4221 struct scsi_cmnd *cmd;
4223 /* The sequencer will notify us when a command has an error that
4224 * would be of interest to the kernel. This allows us to leave
4225 * the sequencer running in the common case of command completes
4226 * without error. The sequencer will have DMA'd the SCB back
4227 * up to us, so we can reference the drivers SCB array.
4229 * Set the default return value to 0 indicating not to send
4230 * sense. The sense code will change this if needed and this
4231 * reduces code duplication.
4233 aic_outb(p, 0, RETURN_1);
4234 scb_index = aic_inb(p, SCB_TAG);
4235 if (scb_index > p->scb_data->numscbs)
4237 printk(WARN_LEAD "Invalid SCB during SEQINT 0x%02x, SCB_TAG %d.\n",
4238 p->host_no, channel, target, lun, intstat, scb_index);
4241 scb = p->scb_data->scb_array[scb_index];
4244 if (!(scb->flags & SCB_ACTIVE) || (scb->cmd == NULL))
4246 printk(WARN_LEAD "Invalid SCB during SEQINT 0x%x, scb %d, flags 0x%x,"
4247 " cmd 0x%lx.\n", p->host_no, channel, target, lun, intstat,
4248 scb_index, scb->flags, (unsigned long) scb->cmd);
4253 aic_dev = AIC_DEV(scb->cmd);
4254 hscb->target_status = aic_inb(p, SCB_TARGET_STATUS);
4255 aic7xxx_status(cmd) = hscb->target_status;
4257 cmd->result = hscb->target_status;
4259 switch (status_byte(hscb->target_status))
4262 if (aic7xxx_verbose & VERBOSE_SEQINT)
4263 printk(INFO_LEAD "Interrupted for status of GOOD???\n",
4264 p->host_no, CTL_OF_SCB(scb));
4267 case COMMAND_TERMINATED:
4268 case CHECK_CONDITION:
4269 if ( !(scb->flags & SCB_SENSE) )
4272 * Send a sense command to the requesting target.
4273 * XXX - revisit this and get rid of the memcopys.
4275 memcpy(scb->sense_cmd, &generic_sense[0],
4276 sizeof(generic_sense));
4278 scb->sense_cmd[1] = (cmd->device->lun << 5);
4279 scb->sense_cmd[4] = sizeof(cmd->sense_buffer);
4281 scb->sg_list[0].length =
4282 cpu_to_le32(sizeof(cmd->sense_buffer));
4283 scb->sg_list[0].address =
4284 cpu_to_le32(pci_map_single(p->pdev, cmd->sense_buffer,
4285 sizeof(cmd->sense_buffer),
4286 PCI_DMA_FROMDEVICE));
4289 * XXX - We should allow disconnection, but can't as it
4290 * might allow overlapped tagged commands.
4292 /* hscb->control &= DISCENB; */
4294 hscb->target_status = 0;
4295 hscb->SG_list_pointer =
4296 cpu_to_le32(SCB_DMA_ADDR(scb, scb->sg_list));
4297 hscb->SCSI_cmd_pointer =
4298 cpu_to_le32(SCB_DMA_ADDR(scb, scb->sense_cmd));
4299 hscb->data_count = scb->sg_list[0].length;
4300 hscb->data_pointer = scb->sg_list[0].address;
4301 hscb->SCSI_cmd_length = COMMAND_SIZE(scb->sense_cmd[0]);
4302 hscb->residual_SG_segment_count = 0;
4303 hscb->residual_data_count[0] = 0;
4304 hscb->residual_data_count[1] = 0;
4305 hscb->residual_data_count[2] = 0;
4307 scb->sg_count = hscb->SG_segment_count = 1;
4308 scb->sg_length = sizeof(cmd->sense_buffer);
4309 scb->tag_action = 0;
4310 scb->flags |= SCB_SENSE;
4312 * Ensure the target is busy since this will be an
4313 * an untagged request.
4315 #ifdef AIC7XXX_VERBOSE_DEBUGGING
4316 if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
4318 if (scb->flags & SCB_MSGOUT_BITS)
4319 printk(INFO_LEAD "Requesting SENSE with %s\n", p->host_no,
4320 CTL_OF_SCB(scb), (scb->flags & SCB_MSGOUT_SDTR) ?
4323 printk(INFO_LEAD "Requesting SENSE, no MSG\n", p->host_no,
4327 aic7xxx_busy_target(p, scb);
4328 aic_outb(p, SEND_SENSE, RETURN_1);
4329 aic7xxx_error(cmd) = DID_OK;
4331 } /* first time sense, no errors */
4332 printk(INFO_LEAD "CHECK_CONDITION on REQUEST_SENSE, returning "
4333 "an error.\n", p->host_no, CTL_OF_SCB(scb));
4334 aic7xxx_error(cmd) = DID_ERROR;
4335 scb->flags &= ~SCB_SENSE;
4339 queue_flag = TRUE; /* Mark that this is a QUEUE_FULL and */
4340 case BUSY: /* drop through to here */
4342 struct aic7xxx_scb *next_scbp, *prev_scbp;
4343 unsigned char active_hscb, next_hscb, prev_hscb, scb_index;
4345 * We have to look three places for queued commands:
4346 * 1: p->waiting_scbs queue
4348 * 3: WAITING_SCBS list on card (for commands that are started
4349 * but haven't yet made it to the device)
4351 * Of special note here is that commands on 2 or 3 above will
4352 * have already been marked as active, while commands on 1 will
4353 * not. The aic7xxx_done() function will want to unmark them
4354 * from active, so any commands we pull off of 1 need to
4355 * up the active count.
4357 next_scbp = p->waiting_scbs.head;
4358 while ( next_scbp != NULL )
4360 prev_scbp = next_scbp;
4361 next_scbp = next_scbp->q_next;
4362 if ( aic7xxx_match_scb(p, prev_scbp, target, channel, lun,
4365 scbq_remove(&p->waiting_scbs, prev_scbp);
4366 scb->flags = SCB_QUEUED_FOR_DONE | SCB_QUEUE_FULL;
4368 aic_dev->active_cmds++;
4371 aic7xxx_search_qinfifo(p, target, channel, lun,
4372 SCB_LIST_NULL, SCB_QUEUED_FOR_DONE | SCB_QUEUE_FULL,
4375 active_hscb = aic_inb(p, SCBPTR);
4376 prev_hscb = next_hscb = scb_index = SCB_LIST_NULL;
4377 next_hscb = aic_inb(p, WAITING_SCBH);
4378 while (next_hscb != SCB_LIST_NULL)
4380 aic_outb(p, next_hscb, SCBPTR);
4381 scb_index = aic_inb(p, SCB_TAG);
4382 if (scb_index < p->scb_data->numscbs)
4384 next_scbp = p->scb_data->scb_array[scb_index];
4385 if (aic7xxx_match_scb(p, next_scbp, target, channel, lun,
4388 next_scbp->flags = SCB_QUEUED_FOR_DONE | SCB_QUEUE_FULL;
4389 next_hscb = aic_inb(p, SCB_NEXT);
4390 aic_outb(p, 0, SCB_CONTROL);
4391 aic_outb(p, SCB_LIST_NULL, SCB_TAG);
4392 aic7xxx_add_curscb_to_free_list(p);
4393 if (prev_hscb == SCB_LIST_NULL)
4395 /* We were first on the list,
4396 * so we kill the selection
4397 * hardware. Let the sequencer
4398 * re-init the hardware itself
4400 aic_outb(p, aic_inb(p, SCSISEQ) & ~ENSELO, SCSISEQ);
4401 aic_outb(p, CLRSELTIMEO, CLRSINT1);
4402 aic_outb(p, next_hscb, WAITING_SCBH);
4406 aic_outb(p, prev_hscb, SCBPTR);
4407 aic_outb(p, next_hscb, SCB_NEXT);
4412 prev_hscb = next_hscb;
4413 next_hscb = aic_inb(p, SCB_NEXT);
4415 } /* scb_index >= p->scb_data->numscbs */
4417 aic_outb(p, active_hscb, SCBPTR);
4418 aic7xxx_run_done_queue(p, FALSE);
4420 #ifdef AIC7XXX_VERBOSE_DEBUGGING
4421 if( (aic7xxx_verbose & VERBOSE_MINOR_ERROR) ||
4422 (aic7xxx_verbose > 0xffff) )
4425 printk(INFO_LEAD "Queue full received; queue depth %d, "
4426 "active %d\n", p->host_no, CTL_OF_SCB(scb),
4427 aic_dev->max_q_depth, aic_dev->active_cmds);
4429 printk(INFO_LEAD "Target busy\n", p->host_no, CTL_OF_SCB(scb));
4435 result = scsi_track_queue_full(cmd->device,
4436 aic_dev->active_cmds);
4439 if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
4440 printk(INFO_LEAD "Tagged Command Queueing disabled.\n",
4441 p->host_no, CTL_OF_SCB(scb));
4442 diff = aic_dev->max_q_depth - p->host->cmd_per_lun;
4443 aic_dev->temp_q_depth = 1;
4444 aic_dev->max_q_depth = 1;
4446 else if ( result > 0 )
4448 if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
4449 printk(INFO_LEAD "Queue depth reduced to %d\n", p->host_no,
4450 CTL_OF_SCB(scb), result);
4451 diff = aic_dev->max_q_depth - result;
4452 aic_dev->max_q_depth = result;
4453 /* temp_q_depth could have been dropped to 1 for an untagged
4454 * command that might be coming up */
4455 if(aic_dev->temp_q_depth > result)
4456 aic_dev->temp_q_depth = result;
4458 /* We should free up the no unused SCB entries. But, that's
4459 * a difficult thing to do because we use a direct indexed
4460 * array, so we can't just take any entries and free them,
4461 * we *have* to free the ones at the end of the array, and
4462 * they very well could be in use right now, which means
4463 * in order to do this right, we have to add a delayed
4464 * freeing mechanism tied into the scb_free() code area.
4465 * We'll add that later.
4472 if (aic7xxx_verbose & VERBOSE_SEQINT)
4473 printk(INFO_LEAD "Unexpected target status 0x%x.\n", p->host_no,
4474 CTL_OF_SCB(scb), scb->hscb->target_status);
4475 if (!aic7xxx_error(cmd))
4477 aic7xxx_error(cmd) = DID_RETRY_COMMAND;
4487 unsigned char scb_index, msg_out;
4489 scb_index = aic_inb(p, SCB_TAG);
4490 msg_out = aic_inb(p, MSG_OUT);
4491 scb = p->scb_data->scb_array[scb_index];
4492 aic_dev = AIC_DEV(scb->cmd);
4493 p->msg_index = p->msg_len = 0;
4495 * This SCB had a MK_MESSAGE set in its control byte informing
4496 * the sequencer that we wanted to send a special message to
4500 if ( !(scb->flags & SCB_DEVICE_RESET) &&
4501 (msg_out == MSG_IDENTIFYFLAG) &&
4502 (scb->hscb->control & TAG_ENB) )
4504 p->msg_buf[p->msg_index++] = scb->tag_action;
4505 p->msg_buf[p->msg_index++] = scb->hscb->tag;
4509 if (scb->flags & SCB_DEVICE_RESET)
4511 p->msg_buf[p->msg_index++] = MSG_BUS_DEV_RESET;
4513 if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
4514 printk(INFO_LEAD "Bus device reset mailed.\n",
4515 p->host_no, CTL_OF_SCB(scb));
4517 else if (scb->flags & SCB_ABORT)
4519 if (scb->tag_action)
4521 p->msg_buf[p->msg_index++] = MSG_ABORT_TAG;
4525 p->msg_buf[p->msg_index++] = MSG_ABORT;
4528 if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
4529 printk(INFO_LEAD "Abort message mailed.\n", p->host_no,
4532 else if (scb->flags & SCB_MSGOUT_PPR)
4534 if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
4536 printk(INFO_LEAD "Sending PPR (%d/%d/%d/%d) message.\n",
4537 p->host_no, CTL_OF_SCB(scb),
4538 aic_dev->goal.period,
4539 aic_dev->goal.offset,
4540 aic_dev->goal.width,
4541 aic_dev->goal.options);
4543 aic7xxx_construct_ppr(p, scb);
4545 else if (scb->flags & SCB_MSGOUT_WDTR)
4547 if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
4549 printk(INFO_LEAD "Sending WDTR message.\n", p->host_no,
4552 aic7xxx_construct_wdtr(p, aic_dev->goal.width);
4554 else if (scb->flags & SCB_MSGOUT_SDTR)
4556 unsigned int max_sync, period;
4557 unsigned char options = 0;
4559 * Now that the device is selected, use the bits in SBLKCTL and
4560 * SSTAT2 to determine the max sync rate for this device.
4562 if (p->features & AHC_ULTRA2)
4564 if ( (aic_inb(p, SBLKCTL) & ENAB40) &&
4565 !(aic_inb(p, SSTAT2) & EXP_ACTIVE) )
4567 max_sync = AHC_SYNCRATE_ULTRA2;
4571 max_sync = AHC_SYNCRATE_ULTRA;
4574 else if (p->features & AHC_ULTRA)
4576 max_sync = AHC_SYNCRATE_ULTRA;
4580 max_sync = AHC_SYNCRATE_FAST;
4582 period = aic_dev->goal.period;
4583 aic7xxx_find_syncrate(p, &period, max_sync, &options);
4584 if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
4586 printk(INFO_LEAD "Sending SDTR %d/%d message.\n", p->host_no,
4587 CTL_OF_SCB(scb), period,
4588 aic_dev->goal.offset);
4590 aic7xxx_construct_sdtr(p, period, aic_dev->goal.offset);
4594 panic("aic7xxx: AWAITING_MSG for an SCB that does "
4595 "not have a waiting message.\n");
4598 * We've set everything up to send our message, now to actually do
4599 * so we need to enable reqinit interrupts and let the interrupt
4600 * handler do the rest. We don't want to unpause the sequencer yet
4601 * though so we'll return early. We also have to make sure that
4602 * we clear the SEQINT *BEFORE* we set the REQINIT handler active
4603 * or else it's possible on VLB cards to lose the first REQINIT
4604 * interrupt. Edge triggered EISA cards could also lose this
4605 * interrupt, although PCI and level triggered cards should not
4606 * have this problem since they continually interrupt the kernel
4607 * until we take care of the situation.
4609 scb->flags |= SCB_MSGOUT_SENT;
4611 p->msg_type = MSG_TYPE_INITIATOR_MSGOUT;
4612 p->flags |= AHC_HANDLING_REQINITS;
4613 aic_outb(p, aic_inb(p, SIMODE1) | ENREQINIT, SIMODE1);
4620 unsigned char scb_index = aic_inb(p, SCB_TAG);
4621 unsigned char lastphase = aic_inb(p, LASTPHASE);
4624 scb = (p->scb_data->scb_array[scb_index]);
4626 * XXX - What do we really want to do on an overrun? The
4627 * mid-level SCSI code should handle this, but for now,
4628 * we'll just indicate that the command should retried.
4629 * If we retrieved sense info on this target, then the
4630 * base SENSE info should have been saved prior to the
4631 * overrun error. In that case, we return DID_OK and let
4632 * the mid level code pick up on the sense info. Otherwise
4633 * we return DID_ERROR so the command will get retried.
4635 if ( !(scb->flags & SCB_SENSE) )
4637 printk(WARN_LEAD "Data overrun detected in %s phase, tag %d;\n",
4638 p->host_no, CTL_OF_SCB(scb),
4639 (lastphase == P_DATAIN) ? "Data-In" : "Data-Out", scb->hscb->tag);
4640 printk(KERN_WARNING " %s seen Data Phase. Length=%d, NumSGs=%d.\n",
4641 (aic_inb(p, SEQ_FLAGS) & DPHASE) ? "Have" : "Haven't",
4642 scb->sg_length, scb->sg_count);
4643 printk(KERN_WARNING " Raw SCSI Command: 0x");
4644 for (i = 0; i < scb->hscb->SCSI_cmd_length; i++)
4646 printk("%02x ", scb->cmd->cmnd[i]);
4649 if(aic7xxx_verbose > 0xffff)
4651 for (i = 0; i < scb->sg_count; i++)
4653 printk(KERN_WARNING " sg[%d] - Addr 0x%x : Length %d\n",
4655 le32_to_cpu(scb->sg_list[i].address),
4656 le32_to_cpu(scb->sg_list[i].length) );
4659 aic7xxx_error(scb->cmd) = DID_ERROR;
4662 printk(INFO_LEAD "Data Overrun during SEND_SENSE operation.\n",
4663 p->host_no, CTL_OF_SCB(scb));
4669 unsigned char resid_sgcnt, index;
4670 unsigned char scb_index = aic_inb(p, SCB_TAG);
4671 unsigned int cur_addr, resid_dcnt;
4672 unsigned int native_addr, native_length, sg_addr;
4675 if(scb_index > p->scb_data->numscbs)
4677 printk(WARN_LEAD "invalid scb_index during WIDE_RESIDUE.\n",
4678 p->host_no, -1, -1, -1);
4680 * XXX: Add error handling here
4684 scb = p->scb_data->scb_array[scb_index];
4685 if(!(scb->flags & SCB_ACTIVE) || (scb->cmd == NULL))
4687 printk(WARN_LEAD "invalid scb during WIDE_RESIDUE flags:0x%x "
4688 "scb->cmd:0x%lx\n", p->host_no, CTL_OF_SCB(scb),
4689 scb->flags, (unsigned long)scb->cmd);
4692 if(aic7xxx_verbose & VERBOSE_MINOR_ERROR)
4693 printk(INFO_LEAD "Got WIDE_RESIDUE message, patching up data "
4694 "pointer.\n", p->host_no, CTL_OF_SCB(scb));
4697 * We have a valid scb to use on this WIDE_RESIDUE message, so
4698 * we need to walk the sg list looking for this particular sg
4699 * segment, then see if we happen to be at the very beginning of
4700 * the segment. If we are, then we have to back things up to
4701 * the previous segment. If not, then we simply need to remove
4702 * one byte from this segments address and add one to the byte
4705 cur_addr = aic_inb(p, SHADDR) | (aic_inb(p, SHADDR + 1) << 8) |
4706 (aic_inb(p, SHADDR + 2) << 16) | (aic_inb(p, SHADDR + 3) << 24);
4707 sg_addr = aic_inb(p, SG_COUNT + 1) | (aic_inb(p, SG_COUNT + 2) << 8) |
4708 (aic_inb(p, SG_COUNT + 3) << 16) | (aic_inb(p, SG_COUNT + 4) << 24);
4709 resid_sgcnt = aic_inb(p, SCB_RESID_SGCNT);
4710 resid_dcnt = aic_inb(p, SCB_RESID_DCNT) |
4711 (aic_inb(p, SCB_RESID_DCNT + 1) << 8) |
4712 (aic_inb(p, SCB_RESID_DCNT + 2) << 16);
4713 index = scb->sg_count - ((resid_sgcnt) ? resid_sgcnt : 1);
4714 native_addr = le32_to_cpu(scb->sg_list[index].address);
4715 native_length = le32_to_cpu(scb->sg_list[index].length);
4717 * If resid_dcnt == native_length, then we just loaded this SG
4718 * segment and we need to back it up one...
4720 if(resid_dcnt == native_length)
4725 * Oops, this isn't right, we can't back up to before the
4726 * beginning. This must be a bogus message, ignore it.
4732 native_addr = le32_to_cpu(scb->sg_list[index - 1].address);
4733 native_length = le32_to_cpu(scb->sg_list[index - 1].length);
4734 cur_addr = native_addr + (native_length - 1);
4735 sg_addr -= sizeof(struct hw_scatterlist);
4740 * resid_dcnt != native_length, so we are in the middle of a SG
4741 * element. Back it up one byte and leave the rest alone.
4748 * Output the new addresses and counts to the right places on the
4751 aic_outb(p, resid_sgcnt, SG_COUNT);
4752 aic_outb(p, resid_sgcnt, SCB_RESID_SGCNT);
4753 aic_outb(p, sg_addr & 0xff, SG_COUNT + 1);
4754 aic_outb(p, (sg_addr >> 8) & 0xff, SG_COUNT + 2);
4755 aic_outb(p, (sg_addr >> 16) & 0xff, SG_COUNT + 3);
4756 aic_outb(p, (sg_addr >> 24) & 0xff, SG_COUNT + 4);
4757 aic_outb(p, resid_dcnt & 0xff, SCB_RESID_DCNT);
4758 aic_outb(p, (resid_dcnt >> 8) & 0xff, SCB_RESID_DCNT + 1);
4759 aic_outb(p, (resid_dcnt >> 16) & 0xff, SCB_RESID_DCNT + 2);
4762 * The sequencer actually wants to find the new address
4763 * in the SHADDR register set. On the Ultra2 and later controllers
4764 * this register set is readonly. In order to get the right number
4765 * into the register, you actually have to enter it in HADDR and then
4766 * use the PRELOADEN bit of DFCNTRL to drop it through from the
4767 * HADDR register to the SHADDR register. On non-Ultra2 controllers,
4768 * we simply write it direct.
4770 if(p->features & AHC_ULTRA2)
4773 * We might as well be accurate and drop both the resid_dcnt and
4774 * cur_addr into HCNT and HADDR and have both of them drop
4775 * through to the shadow layer together.
4777 aic_outb(p, resid_dcnt & 0xff, HCNT);
4778 aic_outb(p, (resid_dcnt >> 8) & 0xff, HCNT + 1);
4779 aic_outb(p, (resid_dcnt >> 16) & 0xff, HCNT + 2);
4780 aic_outb(p, cur_addr & 0xff, HADDR);
4781 aic_outb(p, (cur_addr >> 8) & 0xff, HADDR + 1);
4782 aic_outb(p, (cur_addr >> 16) & 0xff, HADDR + 2);
4783 aic_outb(p, (cur_addr >> 24) & 0xff, HADDR + 3);
4784 aic_outb(p, aic_inb(p, DMAPARAMS) | PRELOADEN, DFCNTRL);
4786 aic_outb(p, aic_inb(p, DMAPARAMS) & ~(SCSIEN|HDMAEN), DFCNTRL);
4788 while(((aic_inb(p, DFCNTRL) & (SCSIEN|HDMAEN)) != 0) && (i++ < 1000))
4795 aic_outb(p, cur_addr & 0xff, SHADDR);
4796 aic_outb(p, (cur_addr >> 8) & 0xff, SHADDR + 1);
4797 aic_outb(p, (cur_addr >> 16) & 0xff, SHADDR + 2);
4798 aic_outb(p, (cur_addr >> 24) & 0xff, SHADDR + 3);
4805 unsigned char scb_index, tmp;
4806 int sg_addr, sg_length;
4808 scb_index = aic_inb(p, SCB_TAG);
4810 if(scb_index > p->scb_data->numscbs)
4812 printk(WARN_LEAD "invalid scb_index during SEQ_SG_FIXUP.\n",
4813 p->host_no, -1, -1, -1);
4814 printk(INFO_LEAD "SCSISIGI 0x%x, SEQADDR 0x%x, SSTAT0 0x%x, SSTAT1 "
4815 "0x%x\n", p->host_no, -1, -1, -1,
4816 aic_inb(p, SCSISIGI),
4817 aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8),
4818 aic_inb(p, SSTAT0), aic_inb(p, SSTAT1));
4819 printk(INFO_LEAD "SG_CACHEPTR 0x%x, SSTAT2 0x%x, STCNT 0x%x\n",
4820 p->host_no, -1, -1, -1, aic_inb(p, SG_CACHEPTR),
4821 aic_inb(p, SSTAT2), aic_inb(p, STCNT + 2) << 16 |
4822 aic_inb(p, STCNT + 1) << 8 | aic_inb(p, STCNT));
4824 * XXX: Add error handling here
4828 scb = p->scb_data->scb_array[scb_index];
4829 if(!(scb->flags & SCB_ACTIVE) || (scb->cmd == NULL))
4831 printk(WARN_LEAD "invalid scb during SEQ_SG_FIXUP flags:0x%x "
4832 "scb->cmd:0x%p\n", p->host_no, CTL_OF_SCB(scb),
4833 scb->flags, scb->cmd);
4834 printk(INFO_LEAD "SCSISIGI 0x%x, SEQADDR 0x%x, SSTAT0 0x%x, SSTAT1 "
4835 "0x%x\n", p->host_no, CTL_OF_SCB(scb),
4836 aic_inb(p, SCSISIGI),
4837 aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8),
4838 aic_inb(p, SSTAT0), aic_inb(p, SSTAT1));
4839 printk(INFO_LEAD "SG_CACHEPTR 0x%x, SSTAT2 0x%x, STCNT 0x%x\n",
4840 p->host_no, CTL_OF_SCB(scb), aic_inb(p, SG_CACHEPTR),
4841 aic_inb(p, SSTAT2), aic_inb(p, STCNT + 2) << 16 |
4842 aic_inb(p, STCNT + 1) << 8 | aic_inb(p, STCNT));
4845 if(aic7xxx_verbose & VERBOSE_MINOR_ERROR)
4846 printk(INFO_LEAD "Fixing up SG address for sequencer.\n", p->host_no,
4849 * Advance the SG pointer to the next element in the list
4851 tmp = aic_inb(p, SG_NEXT);
4853 aic_outb(p, tmp, SG_NEXT);
4854 if( tmp < SG_SIZEOF )
4855 aic_outb(p, aic_inb(p, SG_NEXT + 1) + 1, SG_NEXT + 1);
4856 tmp = aic_inb(p, SG_COUNT) - 1;
4857 aic_outb(p, tmp, SG_COUNT);
4858 sg_addr = le32_to_cpu(scb->sg_list[scb->sg_count - tmp].address);
4859 sg_length = le32_to_cpu(scb->sg_list[scb->sg_count - tmp].length);
4861 * Now stuff the element we just advanced past down onto the
4862 * card so it can be stored in the residual area.
4864 aic_outb(p, sg_addr & 0xff, HADDR);
4865 aic_outb(p, (sg_addr >> 8) & 0xff, HADDR + 1);
4866 aic_outb(p, (sg_addr >> 16) & 0xff, HADDR + 2);
4867 aic_outb(p, (sg_addr >> 24) & 0xff, HADDR + 3);
4868 aic_outb(p, sg_length & 0xff, HCNT);
4869 aic_outb(p, (sg_length >> 8) & 0xff, HCNT + 1);
4870 aic_outb(p, (sg_length >> 16) & 0xff, HCNT + 2);
4871 aic_outb(p, (tmp << 2) | ((tmp == 1) ? LAST_SEG : 0), SG_CACHEPTR);
4872 aic_outb(p, aic_inb(p, DMAPARAMS), DFCNTRL);
4873 while(aic_inb(p, SSTAT0) & SDONE) udelay(1);
4874 while(aic_inb(p, DFCNTRL) & (HDMAEN|SCSIEN)) aic_outb(p, 0, DFCNTRL);
4878 #ifdef AIC7XXX_NOT_YET
4881 printk(INFO_LEAD "Tracepoint #2 reached.\n", p->host_no,
4882 channel, target, lun);
4886 /* XXX Fill these in later */
4887 case MSG_BUFFER_BUSY:
4888 printk("aic7xxx: Message buffer busy.\n");
4890 case MSGIN_PHASEMIS:
4891 printk("aic7xxx: Message-in phasemis.\n");
4895 default: /* unknown */
4896 printk(WARN_LEAD "Unknown SEQINT, INTSTAT 0x%x, SCSISIGI 0x%x.\n",
4897 p->host_no, channel, target, lun, intstat,
4898 aic_inb(p, SCSISIGI));
4903 * Clear the sequencer interrupt and unpause the sequencer.
4905 unpause_sequencer(p, /* unpause always */ TRUE);
4908 /*+F*************************************************************************
4913 * Parses incoming messages into actions on behalf of
4914 * aic7xxx_handle_reqinit
4915 *_F*************************************************************************/
4917 aic7xxx_parse_msg(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
4919 int reject, reply, done;
4920 unsigned char target_scsirate, tindex;
4921 unsigned short target_mask;
4922 unsigned char target, channel, lun;
4923 unsigned char bus_width, new_bus_width;
4924 unsigned char trans_options, new_trans_options;
4925 unsigned int period, new_period, offset, new_offset, maxsync;
4926 struct aic7xxx_syncrate *syncrate;
4927 struct aic_dev_data *aic_dev;
4929 target = scb->cmd->device->id;
4930 channel = scb->cmd->device->channel;
4931 lun = scb->cmd->device->lun;
4932 reply = reject = done = FALSE;
4933 tindex = TARGET_INDEX(scb->cmd);
4934 aic_dev = AIC_DEV(scb->cmd);
4935 target_scsirate = aic_inb(p, TARG_SCSIRATE + tindex);
4936 target_mask = (0x01 << tindex);
4939 * Parse as much of the message as is available,
4940 * rejecting it if we don't support it. When
4941 * the entire message is available and has been
4942 * handled, return TRUE indicating that we have
4943 * parsed an entire message.
4946 if (p->msg_buf[0] != MSG_EXTENDED)
4952 * Even if we are an Ultra3 card, don't allow Ultra3 sync rates when
4953 * using the SDTR messages. We need the PPR messages to enable the
4954 * higher speeds that include things like Dual Edge clocking.
4956 if (p->features & AHC_ULTRA2)
4958 if ( (aic_inb(p, SBLKCTL) & ENAB40) &&
4959 !(aic_inb(p, SSTAT2) & EXP_ACTIVE) )
4961 if (p->features & AHC_ULTRA3)
4962 maxsync = AHC_SYNCRATE_ULTRA3;
4964 maxsync = AHC_SYNCRATE_ULTRA2;
4968 maxsync = AHC_SYNCRATE_ULTRA;
4971 else if (p->features & AHC_ULTRA)
4973 maxsync = AHC_SYNCRATE_ULTRA;
4977 maxsync = AHC_SYNCRATE_FAST;
4981 * Just accept the length byte outright and perform
4982 * more checking once we know the message type.
4985 if ( !reject && (p->msg_len > 2) )
4987 switch(p->msg_buf[2])
4992 if (p->msg_buf[1] != MSG_EXT_SDTR_LEN)
4998 if (p->msg_len < (MSG_EXT_SDTR_LEN + 2))
5003 period = new_period = p->msg_buf[3];
5004 offset = new_offset = p->msg_buf[4];
5005 trans_options = new_trans_options = 0;
5006 bus_width = new_bus_width = target_scsirate & WIDEXFER;
5009 * If our current max syncrate is in the Ultra3 range, bump it back
5010 * down to Ultra2 since we can't negotiate DT transfers using SDTR
5012 if(maxsync == AHC_SYNCRATE_ULTRA3)
5013 maxsync = AHC_SYNCRATE_ULTRA2;
5016 * We might have a device that is starting negotiation with us
5017 * before we can start up negotiation with it....be prepared to
5018 * have a device ask for a higher speed then we want to give it
5021 if ( (scb->flags & (SCB_MSGOUT_SENT|SCB_MSGOUT_SDTR)) !=
5022 (SCB_MSGOUT_SENT|SCB_MSGOUT_SDTR) )
5024 if (!(aic_dev->flags & DEVICE_DTR_SCANNED))
5027 * We shouldn't get here unless this is a narrow drive, wide
5028 * devices should trigger this same section of code in the WDTR
5029 * handler first instead.
5031 aic_dev->goal.width = MSG_EXT_WDTR_BUS_8_BIT;
5032 aic_dev->goal.options = 0;
5033 if(p->user[tindex].offset)
5035 aic_dev->needsdtr_copy = 1;
5036 aic_dev->goal.period = max_t(unsigned char, 10,p->user[tindex].period);
5037 if(p->features & AHC_ULTRA2)
5039 aic_dev->goal.offset = MAX_OFFSET_ULTRA2;
5043 aic_dev->goal.offset = MAX_OFFSET_8BIT;
5048 aic_dev->needsdtr_copy = 0;
5049 aic_dev->goal.period = 255;
5050 aic_dev->goal.offset = 0;
5052 aic_dev->flags |= DEVICE_DTR_SCANNED | DEVICE_PRINT_DTR;
5054 else if (aic_dev->needsdtr_copy == 0)
5057 * This is a preemptive message from the target, we've already
5058 * scanned this target and set our options for it, and we
5059 * don't need a SDTR with this target (for whatever reason),
5060 * so reject this incoming SDTR
5066 /* The device is sending this message first and we have to reply */
5069 if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
5071 printk(INFO_LEAD "Received pre-emptive SDTR message from "
5072 "target.\n", p->host_no, CTL_OF_SCB(scb));
5075 * Validate the values the device passed to us against our SEEPROM
5076 * settings. We don't have to do this if we aren't replying since
5077 * the device isn't allowed to send values greater than the ones
5078 * we first sent to it.
5080 new_period = max_t(unsigned int, period, aic_dev->goal.period);
5081 new_offset = min_t(unsigned int, offset, aic_dev->goal.offset);
5085 * Use our new_period, new_offset, bus_width, and card options
5086 * to determine the actual syncrate settings
5088 syncrate = aic7xxx_find_syncrate(p, &new_period, maxsync,
5090 aic7xxx_validate_offset(p, syncrate, &new_offset, bus_width);
5093 * Did we drop to async? If so, send a reply regardless of whether
5094 * or not we initiated this negotiation.
5096 if ((new_offset == 0) && (new_offset != offset))
5098 aic_dev->needsdtr_copy = 0;
5103 * Did we start this, if not, or if we went too low and had to
5104 * go async, then send an SDTR back to the target
5108 /* when sending a reply, make sure that the goal settings are
5109 * updated along with current and active since the code that
5110 * will actually build the message for the sequencer uses the
5111 * goal settings as its guidelines.
5113 aic7xxx_set_syncrate(p, syncrate, target, channel, new_period,
5114 new_offset, trans_options,
5115 AHC_TRANS_GOAL|AHC_TRANS_ACTIVE|AHC_TRANS_CUR,
5117 scb->flags &= ~SCB_MSGOUT_BITS;
5118 scb->flags |= SCB_MSGOUT_SDTR;
5119 aic_outb(p, HOST_MSG, MSG_OUT);
5120 aic_outb(p, aic_inb(p, SCSISIGO) | ATNO, SCSISIGO);
5124 aic7xxx_set_syncrate(p, syncrate, target, channel, new_period,
5125 new_offset, trans_options,
5126 AHC_TRANS_ACTIVE|AHC_TRANS_CUR, aic_dev);
5127 aic_dev->needsdtr = 0;
5135 if (p->msg_buf[1] != MSG_EXT_WDTR_LEN)
5141 if (p->msg_len < (MSG_EXT_WDTR_LEN + 2))
5146 bus_width = new_bus_width = p->msg_buf[3];
5148 if ( (scb->flags & (SCB_MSGOUT_SENT|SCB_MSGOUT_WDTR)) ==
5149 (SCB_MSGOUT_SENT|SCB_MSGOUT_WDTR) )
5156 if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
5157 ((aic_dev->flags & DEVICE_PRINT_DTR) ||
5158 (aic7xxx_verbose > 0xffff)) )
5160 printk(INFO_LEAD "Requesting %d bit transfers, rejecting.\n",
5161 p->host_no, CTL_OF_SCB(scb), 8 * (0x01 << bus_width));
5163 } /* We fall through on purpose */
5164 case MSG_EXT_WDTR_BUS_8_BIT:
5166 aic_dev->goal.width = MSG_EXT_WDTR_BUS_8_BIT;
5167 aic_dev->needwdtr_copy &= ~target_mask;
5170 case MSG_EXT_WDTR_BUS_16_BIT:
5175 aic_dev->needwdtr = 0;
5176 aic7xxx_set_width(p, target, channel, lun, new_bus_width,
5177 AHC_TRANS_ACTIVE|AHC_TRANS_CUR, aic_dev);
5181 if ( !(aic_dev->flags & DEVICE_DTR_SCANNED) )
5184 * Well, we now know the WDTR and SYNC caps of this device since
5185 * it contacted us first, mark it as such and copy the user stuff
5186 * over to the goal stuff.
5188 if( (p->features & AHC_WIDE) && p->user[tindex].width )
5190 aic_dev->goal.width = MSG_EXT_WDTR_BUS_16_BIT;
5191 aic_dev->needwdtr_copy = 1;
5195 * Devices that support DT transfers don't start WDTR requests
5197 aic_dev->goal.options = 0;
5199 if(p->user[tindex].offset)
5201 aic_dev->needsdtr_copy = 1;
5202 aic_dev->goal.period = max_t(unsigned char, 10, p->user[tindex].period);
5203 if(p->features & AHC_ULTRA2)
5205 aic_dev->goal.offset = MAX_OFFSET_ULTRA2;
5207 else if( aic_dev->goal.width )
5209 aic_dev->goal.offset = MAX_OFFSET_16BIT;
5213 aic_dev->goal.offset = MAX_OFFSET_8BIT;
5216 aic_dev->needsdtr_copy = 0;
5217 aic_dev->goal.period = 255;
5218 aic_dev->goal.offset = 0;
5221 aic_dev->flags |= DEVICE_DTR_SCANNED | DEVICE_PRINT_DTR;
5223 else if (aic_dev->needwdtr_copy == 0)
5226 * This is a preemptive message from the target, we've already
5227 * scanned this target and set our options for it, and we
5228 * don't need a WDTR with this target (for whatever reason),
5229 * so reject this incoming WDTR
5235 /* The device is sending this message first and we have to reply */
5238 if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
5240 printk(INFO_LEAD "Received pre-emptive WDTR message from "
5241 "target.\n", p->host_no, CTL_OF_SCB(scb));
5245 case MSG_EXT_WDTR_BUS_16_BIT:
5247 if ( (p->features & AHC_WIDE) &&
5248 (aic_dev->goal.width == MSG_EXT_WDTR_BUS_16_BIT) )
5250 new_bus_width = MSG_EXT_WDTR_BUS_16_BIT;
5253 } /* Fall through if we aren't a wide card */
5255 case MSG_EXT_WDTR_BUS_8_BIT:
5257 aic_dev->needwdtr_copy = 0;
5258 new_bus_width = MSG_EXT_WDTR_BUS_8_BIT;
5262 scb->flags &= ~SCB_MSGOUT_BITS;
5263 scb->flags |= SCB_MSGOUT_WDTR;
5264 aic_dev->needwdtr = 0;
5265 if(aic_dev->dtr_pending == 0)
5267 /* there is no other command with SCB_DTR_SCB already set that will
5268 * trigger the release of the dtr_pending bit. Both set the bit
5269 * and set scb->flags |= SCB_DTR_SCB
5271 aic_dev->dtr_pending = 1;
5272 scb->flags |= SCB_DTR_SCB;
5274 aic_outb(p, HOST_MSG, MSG_OUT);
5275 aic_outb(p, aic_inb(p, SCSISIGO) | ATNO, SCSISIGO);
5276 /* when sending a reply, make sure that the goal settings are
5277 * updated along with current and active since the code that
5278 * will actually build the message for the sequencer uses the
5279 * goal settings as its guidelines.
5281 aic7xxx_set_width(p, target, channel, lun, new_bus_width,
5282 AHC_TRANS_GOAL|AHC_TRANS_ACTIVE|AHC_TRANS_CUR,
5287 * By virtue of the SCSI spec, a WDTR message negates any existing
5288 * SDTR negotiations. So, even if needsdtr isn't marked for this
5289 * device, we still have to do a new SDTR message if the device
5290 * supports SDTR at all. Therefore, we check needsdtr_copy instead
5293 aic7xxx_set_syncrate(p, NULL, target, channel, 0, 0, 0,
5294 AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE,
5296 aic_dev->needsdtr = aic_dev->needsdtr_copy;
5303 if (p->msg_buf[1] != MSG_EXT_PPR_LEN)
5309 if (p->msg_len < (MSG_EXT_PPR_LEN + 2))
5314 period = new_period = p->msg_buf[3];
5315 offset = new_offset = p->msg_buf[5];
5316 bus_width = new_bus_width = p->msg_buf[6];
5317 trans_options = new_trans_options = p->msg_buf[7] & 0xf;
5319 if(aic7xxx_verbose & VERBOSE_NEGOTIATION2)
5321 printk(INFO_LEAD "Parsing PPR message (%d/%d/%d/%d)\n",
5322 p->host_no, CTL_OF_SCB(scb), period, offset, bus_width,
5327 * We might have a device that is starting negotiation with us
5328 * before we can start up negotiation with it....be prepared to
5329 * have a device ask for a higher speed then we want to give it
5332 if ( (scb->flags & (SCB_MSGOUT_SENT|SCB_MSGOUT_PPR)) !=
5333 (SCB_MSGOUT_SENT|SCB_MSGOUT_PPR) )
5335 /* Have we scanned the device yet? */
5336 if (!(aic_dev->flags & DEVICE_DTR_SCANNED))
5338 /* The device is electing to use PPR messages, so we will too until
5340 aic_dev->needppr = aic_dev->needppr_copy = 1;
5341 aic_dev->needsdtr = aic_dev->needsdtr_copy = 0;
5342 aic_dev->needwdtr = aic_dev->needwdtr_copy = 0;
5344 /* We know the device is SCSI-3 compliant due to PPR */
5345 aic_dev->flags |= DEVICE_SCSI_3;
5348 * Not only is the device starting this up, but it also hasn't
5349 * been scanned yet, so this would likely be our TUR or our
5350 * INQUIRY command at scan time, so we need to use the
5351 * settings from the SEEPROM if they existed. Of course, even
5352 * if we didn't find a SEEPROM, we stuffed default values into
5353 * the user settings anyway, so use those in all cases.
5355 aic_dev->goal.width = p->user[tindex].width;
5356 if(p->user[tindex].offset)
5358 aic_dev->goal.period = p->user[tindex].period;
5359 aic_dev->goal.options = p->user[tindex].options;
5360 if(p->features & AHC_ULTRA2)
5362 aic_dev->goal.offset = MAX_OFFSET_ULTRA2;
5364 else if( aic_dev->goal.width &&
5365 (bus_width == MSG_EXT_WDTR_BUS_16_BIT) &&
5366 p->features & AHC_WIDE )
5368 aic_dev->goal.offset = MAX_OFFSET_16BIT;
5372 aic_dev->goal.offset = MAX_OFFSET_8BIT;
5377 aic_dev->goal.period = 255;
5378 aic_dev->goal.offset = 0;
5379 aic_dev->goal.options = 0;
5381 aic_dev->flags |= DEVICE_DTR_SCANNED | DEVICE_PRINT_DTR;
5383 else if (aic_dev->needppr_copy == 0)
5386 * This is a preemptive message from the target, we've already
5387 * scanned this target and set our options for it, and we
5388 * don't need a PPR with this target (for whatever reason),
5389 * so reject this incoming PPR
5395 /* The device is sending this message first and we have to reply */
5398 if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
5400 printk(INFO_LEAD "Received pre-emptive PPR message from "
5401 "target.\n", p->host_no, CTL_OF_SCB(scb));
5408 case MSG_EXT_WDTR_BUS_16_BIT:
5410 if ( (aic_dev->goal.width == MSG_EXT_WDTR_BUS_16_BIT) &&
5411 p->features & AHC_WIDE)
5418 if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
5419 ((aic_dev->flags & DEVICE_PRINT_DTR) ||
5420 (aic7xxx_verbose > 0xffff)) )
5423 printk(INFO_LEAD "Requesting %d bit transfers, rejecting.\n",
5424 p->host_no, CTL_OF_SCB(scb), 8 * (0x01 << bus_width));
5426 } /* We fall through on purpose */
5427 case MSG_EXT_WDTR_BUS_8_BIT:
5430 * According to the spec, if we aren't wide, we also can't be
5431 * Dual Edge so clear the options byte
5433 new_trans_options = 0;
5434 new_bus_width = MSG_EXT_WDTR_BUS_8_BIT;
5441 /* when sending a reply, make sure that the goal settings are
5442 * updated along with current and active since the code that
5443 * will actually build the message for the sequencer uses the
5444 * goal settings as its guidelines.
5446 aic7xxx_set_width(p, target, channel, lun, new_bus_width,
5447 AHC_TRANS_GOAL|AHC_TRANS_ACTIVE|AHC_TRANS_CUR,
5449 syncrate = aic7xxx_find_syncrate(p, &new_period, maxsync,
5450 &new_trans_options);
5451 aic7xxx_validate_offset(p, syncrate, &new_offset, new_bus_width);
5452 aic7xxx_set_syncrate(p, syncrate, target, channel, new_period,
5453 new_offset, new_trans_options,
5454 AHC_TRANS_GOAL|AHC_TRANS_ACTIVE|AHC_TRANS_CUR,
5459 aic7xxx_set_width(p, target, channel, lun, new_bus_width,
5460 AHC_TRANS_ACTIVE|AHC_TRANS_CUR, aic_dev);
5461 syncrate = aic7xxx_find_syncrate(p, &new_period, maxsync,
5462 &new_trans_options);
5463 aic7xxx_validate_offset(p, syncrate, &new_offset, new_bus_width);
5464 aic7xxx_set_syncrate(p, syncrate, target, channel, new_period,
5465 new_offset, new_trans_options,
5466 AHC_TRANS_ACTIVE|AHC_TRANS_CUR, aic_dev);
5470 * As it turns out, if we don't *have* to have PPR messages, then
5471 * configure ourselves not to use them since that makes some
5472 * external drive chassis work (those chassis can't parse PPR
5473 * messages and they mangle the SCSI bus until you send a WDTR
5474 * and SDTR that they can understand).
5476 if(new_trans_options == 0)
5478 aic_dev->needppr = aic_dev->needppr_copy = 0;
5481 aic_dev->needsdtr = aic_dev->needsdtr_copy = 1;
5485 aic_dev->needwdtr = aic_dev->needwdtr_copy = 1;
5489 if((new_offset == 0) && (offset != 0))
5492 * Oops, the syncrate went to low for this card and we fell off
5493 * to async (should never happen with a device that uses PPR
5494 * messages, but have to be complete)
5501 scb->flags &= ~SCB_MSGOUT_BITS;
5502 scb->flags |= SCB_MSGOUT_PPR;
5503 aic_outb(p, HOST_MSG, MSG_OUT);
5504 aic_outb(p, aic_inb(p, SCSISIGO) | ATNO, SCSISIGO);
5508 aic_dev->needppr = 0;
5518 } /* end of switch(p->msg_type) */
5519 } /* end of if (!reject && (p->msg_len > 2)) */
5521 if (!reply && reject)
5523 aic_outb(p, MSG_MESSAGE_REJECT, MSG_OUT);
5524 aic_outb(p, aic_inb(p, SCSISIGO) | ATNO, SCSISIGO);
5531 /*+F*************************************************************************
5533 * aic7xxx_handle_reqinit
5536 * Interrupt handler for REQINIT interrupts (used to transfer messages to
5537 * and from devices).
5538 *_F*************************************************************************/
5540 aic7xxx_handle_reqinit(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
5542 unsigned char lastbyte;
5543 unsigned char phasemis;
5548 case MSG_TYPE_INITIATOR_MSGOUT:
5550 if (p->msg_len == 0)
5551 panic("aic7xxx: REQINIT with no active message!\n");
5553 lastbyte = (p->msg_index == (p->msg_len - 1));
5554 phasemis = ( aic_inb(p, SCSISIGI) & PHASE_MASK) != P_MESGOUT;
5556 if (lastbyte || phasemis)
5558 /* Time to end the message */
5560 p->msg_type = MSG_TYPE_NONE;
5562 * NOTE-TO-MYSELF: If you clear the REQINIT after you
5563 * disable REQINITs, then cases of REJECT_MSG stop working
5566 aic_outb(p, aic_inb(p, SIMODE1) & ~ENREQINIT, SIMODE1);
5567 aic_outb(p, CLRSCSIINT, CLRINT);
5568 p->flags &= ~AHC_HANDLING_REQINITS;
5572 aic_outb(p, p->msg_buf[p->msg_index], SINDEX);
5573 aic_outb(p, 0, RETURN_1);
5574 #ifdef AIC7XXX_VERBOSE_DEBUGGING
5575 if (aic7xxx_verbose > 0xffff)
5576 printk(INFO_LEAD "Completed sending of REQINIT message.\n",
5577 p->host_no, CTL_OF_SCB(scb));
5582 aic_outb(p, MSGOUT_PHASEMIS, RETURN_1);
5583 #ifdef AIC7XXX_VERBOSE_DEBUGGING
5584 if (aic7xxx_verbose > 0xffff)
5585 printk(INFO_LEAD "PHASEMIS while sending REQINIT message.\n",
5586 p->host_no, CTL_OF_SCB(scb));
5589 unpause_sequencer(p, TRUE);
5594 * Present the byte on the bus (clearing REQINIT) but don't
5595 * unpause the sequencer.
5597 aic_outb(p, CLRREQINIT, CLRSINT1);
5598 aic_outb(p, CLRSCSIINT, CLRINT);
5599 aic_outb(p, p->msg_buf[p->msg_index++], SCSIDATL);
5603 case MSG_TYPE_INITIATOR_MSGIN:
5605 phasemis = ( aic_inb(p, SCSISIGI) & PHASE_MASK ) != P_MESGIN;
5610 /* Pull the byte in without acking it */
5611 p->msg_buf[p->msg_index] = aic_inb(p, SCSIBUSL);
5612 done = aic7xxx_parse_msg(p, scb);
5614 aic_outb(p, CLRREQINIT, CLRSINT1);
5615 aic_outb(p, CLRSCSIINT, CLRINT);
5616 aic_inb(p, SCSIDATL);
5619 if (phasemis || done)
5621 #ifdef AIC7XXX_VERBOSE_DEBUGGING
5622 if (aic7xxx_verbose > 0xffff)
5625 printk(INFO_LEAD "PHASEMIS while receiving REQINIT message.\n",
5626 p->host_no, CTL_OF_SCB(scb));
5628 printk(INFO_LEAD "Completed receipt of REQINIT message.\n",
5629 p->host_no, CTL_OF_SCB(scb));
5632 /* Time to end our message session */
5634 p->msg_type = MSG_TYPE_NONE;
5635 aic_outb(p, aic_inb(p, SIMODE1) & ~ENREQINIT, SIMODE1);
5636 aic_outb(p, CLRSCSIINT, CLRINT);
5637 p->flags &= ~AHC_HANDLING_REQINITS;
5638 unpause_sequencer(p, TRUE);
5644 panic("aic7xxx: Unknown REQINIT message type.\n");
5647 } /* End of switch(p->msg_type) */
5650 /*+F*************************************************************************
5652 * aic7xxx_handle_scsiint
5655 * Interrupt handler for SCSI interrupts (SCSIINT).
5656 *-F*************************************************************************/
5658 aic7xxx_handle_scsiint(struct aic7xxx_host *p, unsigned char intstat)
5660 unsigned char scb_index;
5661 unsigned char status;
5662 struct aic7xxx_scb *scb;
5663 struct aic_dev_data *aic_dev;
5665 scb_index = aic_inb(p, SCB_TAG);
5666 status = aic_inb(p, SSTAT1);
5668 if (scb_index < p->scb_data->numscbs)
5670 scb = p->scb_data->scb_array[scb_index];
5671 if ((scb->flags & SCB_ACTIVE) == 0)
5682 if ((status & SCSIRSTI) != 0)
5686 if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 )
5687 channel = (aic_inb(p, SBLKCTL) & SELBUSB) >> 3;
5691 if (aic7xxx_verbose & VERBOSE_RESET)
5692 printk(WARN_LEAD "Someone else reset the channel!!\n",
5693 p->host_no, channel, -1, -1);
5694 if (aic7xxx_panic_on_abort)
5695 aic7xxx_panic_abort(p, NULL);
5697 * Go through and abort all commands for the channel, but do not
5698 * reset the channel again.
5700 aic7xxx_reset_channel(p, channel, /* Initiate Reset */ FALSE);
5701 aic7xxx_run_done_queue(p, TRUE);
5704 else if ( ((status & BUSFREE) != 0) && ((status & SELTO) == 0) )
5707 * First look at what phase we were last in. If it's message-out,
5708 * chances are pretty good that the bus free was in response to
5709 * one of our abort requests.
5711 unsigned char lastphase = aic_inb(p, LASTPHASE);
5712 unsigned char saved_tcl = aic_inb(p, SAVED_TCL);
5713 unsigned char target = (saved_tcl >> 4) & 0x0F;
5715 int printerror = TRUE;
5717 if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 )
5718 channel = (aic_inb(p, SBLKCTL) & SELBUSB) >> 3;
5722 aic_outb(p, aic_inb(p, SCSISEQ) & (ENSELI|ENRSELI|ENAUTOATNP),
5724 if (lastphase == P_MESGOUT)
5726 unsigned char message;
5728 message = aic_inb(p, SINDEX);
5730 if ((message == MSG_ABORT) || (message == MSG_ABORT_TAG))
5732 if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
5733 printk(INFO_LEAD "SCB %d abort delivered.\n", p->host_no,
5734 CTL_OF_SCB(scb), scb->hscb->tag);
5735 aic7xxx_reset_device(p, target, channel, ALL_LUNS,
5736 (message == MSG_ABORT) ? SCB_LIST_NULL : scb->hscb->tag );
5737 aic7xxx_run_done_queue(p, TRUE);
5741 else if (message == MSG_BUS_DEV_RESET)
5743 aic7xxx_handle_device_reset(p, target, channel);
5748 if ( (scb != NULL) && (scb->flags & SCB_DTR_SCB) )
5751 * Hmmm...error during a negotiation command. Either we have a
5752 * borken bus, or the device doesn't like our negotiation message.
5753 * Since we check the INQUIRY data of a device before sending it
5754 * negotiation messages, assume the bus is borken for whatever
5755 * reason. Complete the command.
5758 aic7xxx_reset_device(p, target, channel, ALL_LUNS, scb->hscb->tag);
5759 aic7xxx_run_done_queue(p, TRUE);
5762 if (printerror != 0)
5768 if ((scb->hscb->control & TAG_ENB) != 0)
5770 tag = scb->hscb->tag;
5774 tag = SCB_LIST_NULL;
5776 aic7xxx_reset_device(p, target, channel, ALL_LUNS, tag);
5777 aic7xxx_run_done_queue(p, TRUE);
5781 aic7xxx_reset_device(p, target, channel, ALL_LUNS, SCB_LIST_NULL);
5782 aic7xxx_run_done_queue(p, TRUE);
5784 printk(INFO_LEAD "Unexpected busfree, LASTPHASE = 0x%x, "
5785 "SEQADDR = 0x%x\n", p->host_no, channel, target, -1, lastphase,
5786 (aic_inb(p, SEQADDR1) << 8) | aic_inb(p, SEQADDR0));
5789 aic_outb(p, MSG_NOOP, MSG_OUT);
5790 aic_outb(p, aic_inb(p, SIMODE1) & ~(ENBUSFREE|ENREQINIT),
5792 p->flags &= ~AHC_HANDLING_REQINITS;
5793 aic_outb(p, CLRBUSFREE, CLRSINT1);
5794 aic_outb(p, CLRSCSIINT, CLRINT);
5795 restart_sequencer(p);
5796 unpause_sequencer(p, TRUE);
5798 else if ((status & SELTO) != 0)
5800 unsigned char scbptr;
5801 unsigned char nextscb;
5802 struct scsi_cmnd *cmd;
5804 scbptr = aic_inb(p, WAITING_SCBH);
5805 if (scbptr > p->scb_data->maxhscbs)
5808 * I'm still trying to track down exactly how this happens, but until
5809 * I find it, this code will make sure we aren't passing bogus values
5810 * into the SCBPTR register, even if that register will just wrap
5811 * things around, we still don't like having out of range variables.
5813 * NOTE: Don't check the aic7xxx_verbose variable, I want this message
5814 * to always be displayed.
5816 printk(INFO_LEAD "Invalid WAITING_SCBH value %d, improvising.\n",
5817 p->host_no, -1, -1, -1, scbptr);
5818 if (p->scb_data->maxhscbs > 4)
5819 scbptr &= (p->scb_data->maxhscbs - 1);
5823 aic_outb(p, scbptr, SCBPTR);
5824 scb_index = aic_inb(p, SCB_TAG);
5827 if (scb_index < p->scb_data->numscbs)
5829 scb = p->scb_data->scb_array[scb_index];
5830 if ((scb->flags & SCB_ACTIVE) == 0)
5837 printk(WARN_LEAD "Referenced SCB %d not valid during SELTO.\n",
5838 p->host_no, -1, -1, -1, scb_index);
5839 printk(KERN_WARNING " SCSISEQ = 0x%x SEQADDR = 0x%x SSTAT0 = 0x%x "
5840 "SSTAT1 = 0x%x\n", aic_inb(p, SCSISEQ),
5841 aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8),
5842 aic_inb(p, SSTAT0), aic_inb(p, SSTAT1));
5843 if (aic7xxx_panic_on_abort)
5844 aic7xxx_panic_abort(p, NULL);
5849 cmd->result = (DID_TIME_OUT << 16);
5852 * Clear out this hardware SCB
5854 aic_outb(p, 0, SCB_CONTROL);
5857 * Clear out a few values in the card that are in an undetermined
5860 aic_outb(p, MSG_NOOP, MSG_OUT);
5863 * Shift the waiting for selection queue forward
5865 nextscb = aic_inb(p, SCB_NEXT);
5866 aic_outb(p, nextscb, WAITING_SCBH);
5869 * Put this SCB back on the free list.
5871 aic7xxx_add_curscb_to_free_list(p);
5872 #ifdef AIC7XXX_VERBOSE_DEBUGGING
5873 if (aic7xxx_verbose > 0xffff)
5874 printk(INFO_LEAD "Selection Timeout.\n", p->host_no, CTL_OF_SCB(scb));
5876 if (scb->flags & SCB_QUEUED_ABORT)
5879 * We know that this particular SCB had to be the queued abort since
5880 * the disconnected SCB would have gotten a reconnect instead.
5881 * What we need to do then is to let the command timeout again so
5882 * we get a reset since this abort just failed.
5889 * Keep the sequencer from trying to restart any selections
5891 aic_outb(p, aic_inb(p, SCSISEQ) & ~ENSELO, SCSISEQ);
5893 * Make sure the data bits on the bus are released
5894 * Don't do this on 7770 chipsets, it makes them give us
5895 * a BRKADDRINT and kills the card.
5897 if( (p->chip & ~AHC_CHIPID_MASK) == AHC_PCI )
5898 aic_outb(p, 0, SCSIBUSL);
5901 * Delay for the selection timeout delay period then stop the selection
5904 aic_outb(p, CLRSELINGO, CLRSINT0);
5906 * Clear out all the interrupt status bits
5908 aic_outb(p, aic_inb(p, SIMODE1) & ~(ENREQINIT|ENBUSFREE), SIMODE1);
5909 p->flags &= ~AHC_HANDLING_REQINITS;
5910 aic_outb(p, CLRSELTIMEO | CLRBUSFREE, CLRSINT1);
5911 aic_outb(p, CLRSCSIINT, CLRINT);
5913 * Restarting the sequencer will stop the selection and make sure devices
5914 * are allowed to reselect in.
5916 restart_sequencer(p);
5917 unpause_sequencer(p, TRUE);
5919 else if (scb == NULL)
5921 printk(WARN_LEAD "aic7xxx_isr - referenced scb not valid "
5922 "during scsiint 0x%x scb(%d)\n"
5923 " SIMODE0 0x%x, SIMODE1 0x%x, SSTAT0 0x%x, SEQADDR 0x%x\n",
5924 p->host_no, -1, -1, -1, status, scb_index, aic_inb(p, SIMODE0),
5925 aic_inb(p, SIMODE1), aic_inb(p, SSTAT0),
5926 (aic_inb(p, SEQADDR1) << 8) | aic_inb(p, SEQADDR0));
5928 * Turn off the interrupt and set status to zero, so that it
5929 * falls through the rest of the SCSIINT code.
5931 aic_outb(p, status, CLRSINT1);
5932 aic_outb(p, CLRSCSIINT, CLRINT);
5933 unpause_sequencer(p, /* unpause always */ TRUE);
5936 else if (status & SCSIPERR)
5939 * Determine the bus phase and queue an appropriate message.
5942 struct scsi_cmnd *cmd;
5943 unsigned char mesg_out = MSG_NOOP;
5944 unsigned char lastphase = aic_inb(p, LASTPHASE);
5945 unsigned char sstat2 = aic_inb(p, SSTAT2);
5955 mesg_out = MSG_INITIATOR_DET_ERR;
5961 phase = "Message-Out";
5965 mesg_out = MSG_INITIATOR_DET_ERR;
5968 phase = "Message-In";
5969 mesg_out = MSG_PARITY_ERROR;
5977 * A parity error has occurred during a data
5978 * transfer phase. Flag it and continue.
5980 if( (p->features & AHC_ULTRA3) &&
5981 (aic_inb(p, SCSIRATE) & AHC_SYNCRATE_CRC) &&
5982 (lastphase == P_DATAIN) )
5984 printk(WARN_LEAD "CRC error during %s phase.\n",
5985 p->host_no, CTL_OF_SCB(scb), phase);
5986 if(sstat2 & CRCVALERR)
5988 printk(WARN_LEAD " CRC error in intermediate CRC packet.\n",
5989 p->host_no, CTL_OF_SCB(scb));
5991 if(sstat2 & CRCENDERR)
5993 printk(WARN_LEAD " CRC error in ending CRC packet.\n",
5994 p->host_no, CTL_OF_SCB(scb));
5996 if(sstat2 & CRCREQERR)
5998 printk(WARN_LEAD " Target incorrectly requested a CRC packet.\n",
5999 p->host_no, CTL_OF_SCB(scb));
6001 if(sstat2 & DUAL_EDGE_ERROR)
6003 printk(WARN_LEAD " Dual Edge transmission error.\n",
6004 p->host_no, CTL_OF_SCB(scb));
6007 else if( (lastphase == P_MESGOUT) &&
6008 (scb->flags & SCB_MSGOUT_PPR) )
6011 * As per the draft specs, any device capable of supporting any of
6012 * the option values other than 0 are not allowed to reject the
6013 * PPR message. Instead, they must negotiate out what they do
6014 * support instead of rejecting our offering or else they cause
6015 * a parity error during msg_out phase to signal that they don't
6016 * like our settings.
6018 aic_dev = AIC_DEV(scb->cmd);
6019 aic_dev->needppr = aic_dev->needppr_copy = 0;
6020 aic7xxx_set_width(p, scb->cmd->device->id, scb->cmd->device->channel, scb->cmd->device->lun,
6021 MSG_EXT_WDTR_BUS_8_BIT,
6022 (AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE),
6024 aic7xxx_set_syncrate(p, NULL, scb->cmd->device->id, scb->cmd->device->channel, 0, 0,
6025 0, AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE,
6027 aic_dev->goal.options = 0;
6028 scb->flags &= ~SCB_MSGOUT_BITS;
6029 if(aic7xxx_verbose & VERBOSE_NEGOTIATION2)
6031 printk(INFO_LEAD "parity error during PPR message, reverting "
6032 "to WDTR/SDTR\n", p->host_no, CTL_OF_SCB(scb));
6034 if ( aic_dev->goal.width )
6036 aic_dev->needwdtr = aic_dev->needwdtr_copy = 1;
6038 if ( aic_dev->goal.offset )
6040 if( aic_dev->goal.period <= 9 )
6042 aic_dev->goal.period = 10;
6044 aic_dev->needsdtr = aic_dev->needsdtr_copy = 1;
6050 * We've set the hardware to assert ATN if we get a parity
6051 * error on "in" phases, so all we need to do is stuff the
6052 * message buffer with the appropriate message. "In" phases
6053 * have set mesg_out to something other than MSG_NOP.
6055 if (mesg_out != MSG_NOOP)
6057 aic_outb(p, mesg_out, MSG_OUT);
6058 aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO);
6061 aic_outb(p, CLRSCSIPERR, CLRSINT1);
6062 aic_outb(p, CLRSCSIINT, CLRINT);
6063 unpause_sequencer(p, /* unpause_always */ TRUE);
6065 else if ( (status & REQINIT) &&
6066 (p->flags & AHC_HANDLING_REQINITS) )
6068 #ifdef AIC7XXX_VERBOSE_DEBUGGING
6069 if (aic7xxx_verbose > 0xffff)
6070 printk(INFO_LEAD "Handling REQINIT, SSTAT1=0x%x.\n", p->host_no,
6071 CTL_OF_SCB(scb), aic_inb(p, SSTAT1));
6073 aic7xxx_handle_reqinit(p, scb);
6079 * We don't know what's going on. Turn off the
6080 * interrupt source and try to continue.
6082 if (aic7xxx_verbose & VERBOSE_SCSIINT)
6083 printk(INFO_LEAD "Unknown SCSIINT status, SSTAT1(0x%x).\n",
6084 p->host_no, -1, -1, -1, status);
6085 aic_outb(p, status, CLRSINT1);
6086 aic_outb(p, CLRSCSIINT, CLRINT);
6087 unpause_sequencer(p, /* unpause always */ TRUE);
6092 aic7xxx_done(p, scb);
6096 #ifdef AIC7XXX_VERBOSE_DEBUGGING
6098 aic7xxx_check_scbs(struct aic7xxx_host *p, char *buffer)
6100 unsigned char saved_scbptr, free_scbh, dis_scbh, wait_scbh, temp;
6102 static unsigned char scb_status[AIC7XXX_MAXSCB];
6104 #define SCB_NO_LIST 0
6105 #define SCB_FREE_LIST 1
6106 #define SCB_WAITING_LIST 2
6107 #define SCB_DISCONNECTED_LIST 4
6108 #define SCB_CURRENTLY_ACTIVE 8
6111 * Note, these checks will fail on a regular basis once the machine moves
6112 * beyond the bus scan phase. The problem is race conditions concerning
6113 * the scbs and where they are linked in. When you have 30 or so commands
6114 * outstanding on the bus, and run this twice with every interrupt, the
6115 * chances get pretty good that you'll catch the sequencer with an SCB
6116 * only partially linked in. Therefore, once we pass the scan phase
6117 * of the bus, we really should disable this function.
6120 memset(&scb_status[0], 0, sizeof(scb_status));
6122 saved_scbptr = aic_inb(p, SCBPTR);
6123 if (saved_scbptr >= p->scb_data->maxhscbs)
6125 printk("Bogus SCBPTR %d\n", saved_scbptr);
6128 scb_status[saved_scbptr] = SCB_CURRENTLY_ACTIVE;
6129 free_scbh = aic_inb(p, FREE_SCBH);
6130 if ( (free_scbh != SCB_LIST_NULL) &&
6131 (free_scbh >= p->scb_data->maxhscbs) )
6133 printk("Bogus FREE_SCBH %d\n", free_scbh);
6139 while( (temp != SCB_LIST_NULL) && (temp < p->scb_data->maxhscbs) )
6141 if(scb_status[temp] & 0x07)
6143 printk("HSCB %d on multiple lists, status 0x%02x", temp,
6144 scb_status[temp] | SCB_FREE_LIST);
6147 scb_status[temp] |= SCB_FREE_LIST;
6148 aic_outb(p, temp, SCBPTR);
6149 temp = aic_inb(p, SCB_NEXT);
6153 dis_scbh = aic_inb(p, DISCONNECTED_SCBH);
6154 if ( (dis_scbh != SCB_LIST_NULL) &&
6155 (dis_scbh >= p->scb_data->maxhscbs) )
6157 printk("Bogus DISCONNECTED_SCBH %d\n", dis_scbh);
6163 while( (temp != SCB_LIST_NULL) && (temp < p->scb_data->maxhscbs) )
6165 if(scb_status[temp] & 0x07)
6167 printk("HSCB %d on multiple lists, status 0x%02x", temp,
6168 scb_status[temp] | SCB_DISCONNECTED_LIST);
6171 scb_status[temp] |= SCB_DISCONNECTED_LIST;
6172 aic_outb(p, temp, SCBPTR);
6173 temp = aic_inb(p, SCB_NEXT);
6177 wait_scbh = aic_inb(p, WAITING_SCBH);
6178 if ( (wait_scbh != SCB_LIST_NULL) &&
6179 (wait_scbh >= p->scb_data->maxhscbs) )
6181 printk("Bogus WAITING_SCBH %d\n", wait_scbh);
6187 while( (temp != SCB_LIST_NULL) && (temp < p->scb_data->maxhscbs) )
6189 if(scb_status[temp] & 0x07)
6191 printk("HSCB %d on multiple lists, status 0x%02x", temp,
6192 scb_status[temp] | SCB_WAITING_LIST);
6195 scb_status[temp] |= SCB_WAITING_LIST;
6196 aic_outb(p, temp, SCBPTR);
6197 temp = aic_inb(p, SCB_NEXT);
6202 for(i=0; i < p->scb_data->maxhscbs; i++)
6204 aic_outb(p, i, SCBPTR);
6205 temp = aic_inb(p, SCB_NEXT);
6206 if ( ((temp != SCB_LIST_NULL) &&
6207 (temp >= p->scb_data->maxhscbs)) )
6209 printk("HSCB %d bad, SCB_NEXT invalid(%d).\n", i, temp);
6214 printk("HSCB %d bad, SCB_NEXT points to self.\n", i);
6217 if (scb_status[i] == 0)
6221 printk("Too many lost scbs.\n");
6225 aic_outb(p, saved_scbptr, SCBPTR);
6226 unpause_sequencer(p, FALSE);
6229 printk("Bogus parameters found in card SCB array structures.\n");
6230 printk("%s\n", buffer);
6231 aic7xxx_panic_abort(p, NULL);
6238 /*+F*************************************************************************
6240 * aic7xxx_handle_command_completion_intr
6243 * SCSI command completion interrupt handler.
6244 *-F*************************************************************************/
6246 aic7xxx_handle_command_completion_intr(struct aic7xxx_host *p)
6248 struct aic7xxx_scb *scb = NULL;
6249 struct aic_dev_data *aic_dev;
6250 struct scsi_cmnd *cmd;
6251 unsigned char scb_index, tindex;
6253 #ifdef AIC7XXX_VERBOSE_DEBUGGING
6254 if( (p->isr_count < 16) && (aic7xxx_verbose > 0xffff) )
6255 printk(INFO_LEAD "Command Complete Int.\n", p->host_no, -1, -1, -1);
6259 * Read the INTSTAT location after clearing the CMDINT bit. This forces
6260 * any posted PCI writes to flush to memory. Gerard Roudier suggested
6261 * this fix to the possible race of clearing the CMDINT bit but not
6262 * having all command bytes flushed onto the qoutfifo.
6264 aic_outb(p, CLRCMDINT, CLRINT);
6265 aic_inb(p, INTSTAT);
6267 * The sequencer will continue running when it
6268 * issues this interrupt. There may be >1 commands
6269 * finished, so loop until we've processed them all.
6272 while (p->qoutfifo[p->qoutfifonext] != SCB_LIST_NULL)
6274 scb_index = p->qoutfifo[p->qoutfifonext];
6275 p->qoutfifo[p->qoutfifonext++] = SCB_LIST_NULL;
6276 if ( scb_index >= p->scb_data->numscbs )
6278 printk(WARN_LEAD "CMDCMPLT with invalid SCB index %d\n", p->host_no,
6279 -1, -1, -1, scb_index);
6282 scb = p->scb_data->scb_array[scb_index];
6283 if (!(scb->flags & SCB_ACTIVE) || (scb->cmd == NULL))
6285 printk(WARN_LEAD "CMDCMPLT without command for SCB %d, SCB flags "
6286 "0x%x, cmd 0x%lx\n", p->host_no, -1, -1, -1, scb_index, scb->flags,
6287 (unsigned long) scb->cmd);
6290 tindex = TARGET_INDEX(scb->cmd);
6291 aic_dev = AIC_DEV(scb->cmd);
6292 if (scb->flags & SCB_QUEUED_ABORT)
6295 if ( ((aic_inb(p, LASTPHASE) & PHASE_MASK) != P_BUSFREE) &&
6296 (aic_inb(p, SCB_TAG) == scb->hscb->tag) )
6298 unpause_sequencer(p, FALSE);
6301 aic7xxx_reset_device(p, scb->cmd->device->id, scb->cmd->device->channel,
6302 scb->cmd->device->lun, scb->hscb->tag);
6303 scb->flags &= ~(SCB_QUEUED_FOR_DONE | SCB_RESET | SCB_ABORT |
6305 unpause_sequencer(p, FALSE);
6307 else if (scb->flags & SCB_ABORT)
6310 * We started to abort this, but it completed on us, let it
6311 * through as successful
6313 scb->flags &= ~(SCB_ABORT|SCB_RESET);
6315 else if (scb->flags & SCB_SENSE)
6317 char *buffer = &scb->cmd->sense_buffer[0];
6319 if (buffer[12] == 0x47 || buffer[12] == 0x54)
6322 * Signal that we need to re-negotiate things.
6324 aic_dev->needppr = aic_dev->needppr_copy;
6325 aic_dev->needsdtr = aic_dev->needsdtr_copy;
6326 aic_dev->needwdtr = aic_dev->needwdtr_copy;
6330 if (scb->hscb->residual_SG_segment_count != 0)
6332 aic7xxx_calculate_residual(p, scb);
6334 cmd->result |= (aic7xxx_error(cmd) << 16);
6335 aic7xxx_done(p, scb);
6339 /*+F*************************************************************************
6344 * SCSI controller interrupt handler.
6345 *-F*************************************************************************/
6347 aic7xxx_isr(void *dev_id)
6349 struct aic7xxx_host *p;
6350 unsigned char intstat;
6355 * Just a few sanity checks. Make sure that we have an int pending.
6356 * Also, if PCI, then we are going to check for a PCI bus error status
6357 * should we get too many spurious interrupts.
6359 if (!((intstat = aic_inb(p, INTSTAT)) & INT_PEND))
6362 if ( (p->chip & AHC_PCI) && (p->spurious_int > 500) &&
6363 !(p->flags & AHC_HANDLING_REQINITS) )
6365 if ( aic_inb(p, ERROR) & PCIERRSTAT )
6367 aic7xxx_pci_intr(p);
6369 p->spurious_int = 0;
6371 else if ( !(p->flags & AHC_HANDLING_REQINITS) )
6379 p->spurious_int = 0;
6382 * Keep track of interrupts for /proc/scsi
6386 #ifdef AIC7XXX_VERBOSE_DEBUGGING
6387 if ( (p->isr_count < 16) && (aic7xxx_verbose > 0xffff) &&
6388 (aic7xxx_panic_on_abort) && (p->flags & AHC_PAGESCBS) )
6389 aic7xxx_check_scbs(p, "Bogus settings at start of interrupt.");
6393 * Handle all the interrupt sources - especially for SCSI
6394 * interrupts, we won't get a second chance at them.
6396 if (intstat & CMDCMPLT)
6398 aic7xxx_handle_command_completion_intr(p);
6401 if (intstat & BRKADRINT)
6404 unsigned char errno = aic_inb(p, ERROR);
6406 printk(KERN_ERR "(scsi%d) BRKADRINT error(0x%x):\n", p->host_no, errno);
6407 for (i = 0; i < ARRAY_SIZE(hard_error); i++)
6409 if (errno & hard_error[i].errno)
6411 printk(KERN_ERR " %s\n", hard_error[i].errmesg);
6414 printk(KERN_ERR "(scsi%d) SEQADDR=0x%x\n", p->host_no,
6415 (((aic_inb(p, SEQADDR1) << 8) & 0x100) | aic_inb(p, SEQADDR0)));
6416 if (aic7xxx_panic_on_abort)
6417 aic7xxx_panic_abort(p, NULL);
6419 if (errno & PCIERRSTAT)
6420 aic7xxx_pci_intr(p);
6422 if (errno & (SQPARERR | ILLOPCODE | ILLSADDR))
6424 panic("aic7xxx: unrecoverable BRKADRINT.\n");
6426 if (errno & ILLHADDR)
6428 printk(KERN_ERR "(scsi%d) BUG! Driver accessed chip without first "
6429 "pausing controller!\n", p->host_no);
6431 #ifdef AIC7XXX_VERBOSE_DEBUGGING
6432 if (errno & DPARERR)
6434 if (aic_inb(p, DMAPARAMS) & DIRECTION)
6435 printk("(scsi%d) while DMAing SCB from host to card.\n", p->host_no);
6437 printk("(scsi%d) while DMAing SCB from card to host.\n", p->host_no);
6440 aic_outb(p, CLRPARERR | CLRBRKADRINT, CLRINT);
6441 unpause_sequencer(p, FALSE);
6444 if (intstat & SEQINT)
6447 * Read the CCSCBCTL register to work around a bug in the Ultra2 cards
6449 if(p->features & AHC_ULTRA2)
6451 aic_inb(p, CCSCBCTL);
6453 aic7xxx_handle_seqint(p, intstat);
6456 if (intstat & SCSIINT)
6458 aic7xxx_handle_scsiint(p, intstat);
6461 #ifdef AIC7XXX_VERBOSE_DEBUGGING
6462 if ( (p->isr_count < 16) && (aic7xxx_verbose > 0xffff) &&
6463 (aic7xxx_panic_on_abort) && (p->flags & AHC_PAGESCBS) )
6464 aic7xxx_check_scbs(p, "Bogus settings at end of interrupt.");
6469 /*+F*************************************************************************
6474 * This is a gross hack to solve a problem in linux kernels 2.1.85 and
6475 * above. Please, children, do not try this at home, and if you ever see
6476 * anything like it, please inform the Gross Hack Police immediately
6477 *-F*************************************************************************/
6479 do_aic7xxx_isr(int irq, void *dev_id)
6481 unsigned long cpu_flags;
6482 struct aic7xxx_host *p;
6484 p = (struct aic7xxx_host *)dev_id;
6487 spin_lock_irqsave(p->host->host_lock, cpu_flags);
6488 p->flags |= AHC_IN_ISR;
6491 aic7xxx_isr(dev_id);
6492 } while ( (aic_inb(p, INTSTAT) & INT_PEND) );
6493 aic7xxx_done_cmds_complete(p);
6494 aic7xxx_run_waiting_queues(p);
6495 p->flags &= ~AHC_IN_ISR;
6496 spin_unlock_irqrestore(p->host->host_lock, cpu_flags);
6501 /*+F*************************************************************************
6503 * aic7xxx_init_transinfo
6506 * Set up the initial aic_dev values from the BIOS settings and from
6508 *-F*************************************************************************/
6510 aic7xxx_init_transinfo(struct aic7xxx_host *p, struct aic_dev_data *aic_dev)
6512 struct scsi_device *sdpnt = aic_dev->SDptr;
6513 unsigned char tindex;
6515 tindex = sdpnt->id | (sdpnt->channel << 3);
6516 if (!(aic_dev->flags & DEVICE_DTR_SCANNED))
6518 aic_dev->flags |= DEVICE_DTR_SCANNED;
6520 if ( sdpnt->wdtr && (p->features & AHC_WIDE) )
6522 aic_dev->needwdtr = aic_dev->needwdtr_copy = 1;
6523 aic_dev->goal.width = p->user[tindex].width;
6527 aic_dev->needwdtr = aic_dev->needwdtr_copy = 0;
6529 aic7xxx_set_width(p, sdpnt->id, sdpnt->channel, sdpnt->lun,
6530 MSG_EXT_WDTR_BUS_8_BIT, (AHC_TRANS_ACTIVE |
6532 AHC_TRANS_CUR), aic_dev );
6533 unpause_sequencer(p, FALSE);
6535 if ( sdpnt->sdtr && p->user[tindex].offset )
6537 aic_dev->goal.period = p->user[tindex].period;
6538 aic_dev->goal.options = p->user[tindex].options;
6539 if (p->features & AHC_ULTRA2)
6540 aic_dev->goal.offset = MAX_OFFSET_ULTRA2;
6541 else if (aic_dev->goal.width == MSG_EXT_WDTR_BUS_16_BIT)
6542 aic_dev->goal.offset = MAX_OFFSET_16BIT;
6544 aic_dev->goal.offset = MAX_OFFSET_8BIT;
6545 if ( sdpnt->ppr && p->user[tindex].period <= 9 &&
6546 p->user[tindex].options )
6548 aic_dev->needppr = aic_dev->needppr_copy = 1;
6549 aic_dev->needsdtr = aic_dev->needsdtr_copy = 0;
6550 aic_dev->needwdtr = aic_dev->needwdtr_copy = 0;
6551 aic_dev->flags |= DEVICE_SCSI_3;
6555 aic_dev->needsdtr = aic_dev->needsdtr_copy = 1;
6556 aic_dev->goal.period = max_t(unsigned char, 10, aic_dev->goal.period);
6557 aic_dev->goal.options = 0;
6562 aic_dev->needsdtr = aic_dev->needsdtr_copy = 0;
6563 aic_dev->goal.period = 255;
6564 aic_dev->goal.offset = 0;
6565 aic_dev->goal.options = 0;
6567 aic_dev->flags |= DEVICE_PRINT_DTR;
6571 /*+F*************************************************************************
6573 * aic7xxx_slave_alloc
6576 * Set up the initial aic_dev struct pointers
6577 *-F*************************************************************************/
6579 aic7xxx_slave_alloc(struct scsi_device *SDptr)
6581 struct aic7xxx_host *p = (struct aic7xxx_host *)SDptr->host->hostdata;
6582 struct aic_dev_data *aic_dev;
6584 aic_dev = kmalloc(sizeof(struct aic_dev_data), GFP_ATOMIC | GFP_KERNEL);
6588 * Check to see if channel was scanned.
6591 if (!(p->flags & AHC_A_SCANNED) && (SDptr->channel == 0))
6593 if (aic7xxx_verbose & VERBOSE_PROBE2)
6594 printk(INFO_LEAD "Scanning channel for devices.\n",
6595 p->host_no, 0, -1, -1);
6596 p->flags |= AHC_A_SCANNED;
6600 if (!(p->flags & AHC_B_SCANNED) && (SDptr->channel == 1))
6602 if (aic7xxx_verbose & VERBOSE_PROBE2)
6603 printk(INFO_LEAD "Scanning channel for devices.\n",
6604 p->host_no, 1, -1, -1);
6605 p->flags |= AHC_B_SCANNED;
6609 memset(aic_dev, 0, sizeof(struct aic_dev_data));
6610 SDptr->hostdata = aic_dev;
6611 aic_dev->SDptr = SDptr;
6612 aic_dev->max_q_depth = 1;
6613 aic_dev->temp_q_depth = 1;
6614 scbq_init(&aic_dev->delayed_scbs);
6615 INIT_LIST_HEAD(&aic_dev->list);
6616 list_add_tail(&aic_dev->list, &p->aic_devs);
6620 /*+F*************************************************************************
6622 * aic7xxx_device_queue_depth
6625 * Determines the queue depth for a given device. There are two ways
6626 * a queue depth can be obtained for a tagged queueing device. One
6627 * way is the default queue depth which is determined by whether
6628 * aic7xxx_default_queue_depth. The other is by the aic7xxx_tag_info
6631 * If tagged queueing isn't supported on the device, then we set the
6632 * depth to p->host->hostt->cmd_per_lun for internal driver queueing.
6633 * as the default queue depth. Otherwise, we use either 4 or 8 as the
6634 * default queue depth (dependent on the number of hardware SCBs).
6635 * The other way we determine queue depth is through the use of the
6636 * aic7xxx_tag_info array which is enabled by defining
6637 * AIC7XXX_TAGGED_QUEUEING_BY_DEVICE. This array can be initialized
6638 * with queue depths for individual devices. It also allows tagged
6639 * queueing to be [en|dis]abled for a specific adapter.
6640 *-F*************************************************************************/
6642 aic7xxx_device_queue_depth(struct aic7xxx_host *p, struct scsi_device *device)
6644 int tag_enabled = FALSE;
6645 struct aic_dev_data *aic_dev = device->hostdata;
6646 unsigned char tindex;
6648 tindex = device->id | (device->channel << 3);
6650 if (device->simple_tags)
6651 return; // We've already enabled this device
6653 if (device->tagged_supported)
6657 if (!(p->discenable & (1 << tindex)))
6659 if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
6660 printk(INFO_LEAD "Disconnection disabled, unable to "
6661 "enable tagged queueing.\n",
6662 p->host_no, device->channel, device->id, device->lun);
6663 tag_enabled = FALSE;
6667 if (p->instance >= ARRAY_SIZE(aic7xxx_tag_info))
6669 static int print_warning = TRUE;
6672 printk(KERN_INFO "aic7xxx: WARNING, insufficient tag_info instances for"
6673 " installed controllers.\n");
6674 printk(KERN_INFO "aic7xxx: Please update the aic7xxx_tag_info array in"
6675 " the aic7xxx.c source file.\n");
6676 print_warning = FALSE;
6678 aic_dev->max_q_depth = aic_dev->temp_q_depth =
6679 aic7xxx_default_queue_depth;
6684 if (aic7xxx_tag_info[p->instance].tag_commands[tindex] == 255)
6686 tag_enabled = FALSE;
6688 else if (aic7xxx_tag_info[p->instance].tag_commands[tindex] == 0)
6690 aic_dev->max_q_depth = aic_dev->temp_q_depth =
6691 aic7xxx_default_queue_depth;
6695 aic_dev->max_q_depth = aic_dev->temp_q_depth =
6696 aic7xxx_tag_info[p->instance].tag_commands[tindex];
6703 if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
6705 printk(INFO_LEAD "Tagged queuing enabled, queue depth %d.\n",
6706 p->host_no, device->channel, device->id,
6707 device->lun, aic_dev->max_q_depth);
6709 scsi_adjust_queue_depth(device, MSG_ORDERED_TAG, aic_dev->max_q_depth);
6713 if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
6715 printk(INFO_LEAD "Tagged queuing disabled, queue depth %d.\n",
6716 p->host_no, device->channel, device->id,
6717 device->lun, device->host->cmd_per_lun);
6719 scsi_adjust_queue_depth(device, 0, device->host->cmd_per_lun);
6724 /*+F*************************************************************************
6726 * aic7xxx_slave_destroy
6729 * prepare for this device to go away
6730 *-F*************************************************************************/
6732 aic7xxx_slave_destroy(struct scsi_device *SDptr)
6734 struct aic_dev_data *aic_dev = SDptr->hostdata;
6736 list_del(&aic_dev->list);
6737 SDptr->hostdata = NULL;
6742 /*+F*************************************************************************
6744 * aic7xxx_slave_configure
6747 * Configure the device we are attaching to the controller. This is
6748 * where we get to do things like scan the INQUIRY data, set queue
6749 * depths, allocate command structs, etc.
6750 *-F*************************************************************************/
6752 aic7xxx_slave_configure(struct scsi_device *SDptr)
6754 struct aic7xxx_host *p = (struct aic7xxx_host *) SDptr->host->hostdata;
6755 struct aic_dev_data *aic_dev;
6758 aic_dev = (struct aic_dev_data *)SDptr->hostdata;
6760 aic7xxx_init_transinfo(p, aic_dev);
6761 aic7xxx_device_queue_depth(p, SDptr);
6762 if(list_empty(&aic_dev->list))
6763 list_add_tail(&aic_dev->list, &p->aic_devs);
6766 list_for_each_entry(aic_dev, &p->aic_devs, list) {
6767 scbnum += aic_dev->max_q_depth;
6769 while (scbnum > p->scb_data->numscbs)
6772 * Pre-allocate the needed SCBs to get around the possibility of having
6773 * to allocate some when memory is more or less exhausted and we need
6774 * the SCB in order to perform a swap operation (possible deadlock)
6776 if ( aic7xxx_allocate_scb(p) == 0 )
6784 /*+F*************************************************************************
6789 * Probing for EISA boards: it looks like the first two bytes
6790 * are a manufacturer code - three characters, five bits each:
6792 * BYTE 0 BYTE 1 BYTE 2 BYTE 3
6793 * ?1111122 22233333 PPPPPPPP RRRRRRRR
6795 * The characters are baselined off ASCII '@', so add that value
6796 * to each to get the real ASCII code for it. The next two bytes
6797 * appear to be a product and revision number, probably vendor-
6798 * specific. This is what is being searched for at each port,
6799 * and what should probably correspond to the ID= field in the
6800 * ECU's .cfg file for the card - if your card is not detected,
6801 * make sure your signature is listed in the array.
6803 * The fourth byte's lowest bit seems to be an enabled/disabled
6804 * flag (rest of the bits are reserved?).
6806 * NOTE: This function is only needed on Intel and Alpha platforms,
6807 * the other platforms we support don't have EISA/VLB busses. So,
6808 * we #ifdef this entire function to avoid compiler warnings about
6809 * an unused function.
6810 *-F*************************************************************************/
6811 #if defined(__i386__) || defined(__alpha__)
6813 aic7xxx_probe(int slot, int base, ahc_flag_type *flags)
6816 unsigned char buf[4];
6820 unsigned char signature[sizeof(buf)];
6824 { 4, { 0x04, 0x90, 0x77, 0x70 },
6825 AHC_AIC7770|AHC_EISA, FALSE }, /* mb 7770 */
6826 { 4, { 0x04, 0x90, 0x77, 0x71 },
6827 AHC_AIC7770|AHC_EISA, FALSE }, /* host adapter 274x */
6828 { 4, { 0x04, 0x90, 0x77, 0x56 },
6829 AHC_AIC7770|AHC_VL, FALSE }, /* 284x BIOS enabled */
6830 { 4, { 0x04, 0x90, 0x77, 0x57 },
6831 AHC_AIC7770|AHC_VL, TRUE } /* 284x BIOS disabled */
6835 * The VL-bus cards need to be primed by
6836 * writing before a signature check.
6838 for (i = 0; i < sizeof(buf); i++)
6840 outb(0x80 + i, base);
6841 buf[i] = inb(base + i);
6844 for (i = 0; i < ARRAY_SIZE(AIC7xxx); i++)
6847 * Signature match on enabled card?
6849 if (!memcmp(buf, AIC7xxx[i].signature, AIC7xxx[i].n))
6851 if (inb(base + 4) & 1)
6853 if (AIC7xxx[i].bios_disabled)
6855 *flags |= AHC_USEDEFAULTS;
6859 *flags |= AHC_BIOS_ENABLED;
6864 printk("aic7xxx: <Adaptec 7770 SCSI Host Adapter> "
6865 "disabled at slot %d, ignored.\n", slot);
6871 #endif /* (__i386__) || (__alpha__) */
6874 /*+F*************************************************************************
6879 * Reads the 2840 serial EEPROM and returns 1 if successful and 0 if
6882 * See read_seeprom (for the 2940) for the instruction set of the 93C46
6885 * The 2840 interface to the 93C46 serial EEPROM is through the
6886 * STATUS_2840 and SEECTL_2840 registers. The CS_2840, CK_2840, and
6887 * DO_2840 bits of the SEECTL_2840 register are connected to the chip
6888 * select, clock, and data out lines respectively of the serial EEPROM.
6889 * The DI_2840 bit of the STATUS_2840 is connected to the data in line
6890 * of the serial EEPROM. The EEPROM_TF bit of STATUS_2840 register is
6891 * useful in that it gives us an 800 nsec timer. After a read from the
6892 * SEECTL_2840 register the timing flag is cleared and goes high 800 nsec
6894 *-F*************************************************************************/
6896 read_284x_seeprom(struct aic7xxx_host *p, struct seeprom_config *sc)
6900 unsigned short checksum = 0;
6901 unsigned short *seeprom = (unsigned short *) sc;
6902 struct seeprom_cmd {
6904 unsigned char bits[3];
6906 struct seeprom_cmd seeprom_read = {3, {1, 1, 0}};
6908 #define CLOCK_PULSE(p) \
6909 while ((aic_inb(p, STATUS_2840) & EEPROM_TF) == 0) \
6911 ; /* Do nothing */ \
6913 (void) aic_inb(p, SEECTL_2840);
6916 * Read the first 32 registers of the seeprom. For the 2840,
6917 * the 93C46 SEEPROM is a 1024-bit device with 64 16-bit registers
6918 * but only the first 32 are used by Adaptec BIOS. The loop
6919 * will range from 0 to 31.
6921 for (k = 0; k < (sizeof(*sc) / 2); k++)
6924 * Send chip select for one clock cycle.
6926 aic_outb(p, CK_2840 | CS_2840, SEECTL_2840);
6930 * Now we're ready to send the read command followed by the
6931 * address of the 16-bit register we want to read.
6933 for (i = 0; i < seeprom_read.len; i++)
6935 temp = CS_2840 | seeprom_read.bits[i];
6936 aic_outb(p, temp, SEECTL_2840);
6938 temp = temp ^ CK_2840;
6939 aic_outb(p, temp, SEECTL_2840);
6943 * Send the 6 bit address (MSB first, LSB last).
6945 for (i = 5; i >= 0; i--)
6948 temp = (temp >> i) & 1; /* Mask out all but lower bit. */
6949 temp = CS_2840 | temp;
6950 aic_outb(p, temp, SEECTL_2840);
6952 temp = temp ^ CK_2840;
6953 aic_outb(p, temp, SEECTL_2840);
6958 * Now read the 16 bit register. An initial 0 precedes the
6959 * register contents which begins with bit 15 (MSB) and ends
6960 * with bit 0 (LSB). The initial 0 will be shifted off the
6961 * top of our word as we let the loop run from 0 to 16.
6963 for (i = 0; i <= 16; i++)
6966 aic_outb(p, temp, SEECTL_2840);
6968 temp = temp ^ CK_2840;
6969 seeprom[k] = (seeprom[k] << 1) | (aic_inb(p, STATUS_2840) & DI_2840);
6970 aic_outb(p, temp, SEECTL_2840);
6974 * The serial EEPROM has a checksum in the last word. Keep a
6975 * running checksum for all words read except for the last
6976 * word. We'll verify the checksum after all words have been
6979 if (k < (sizeof(*sc) / 2) - 1)
6981 checksum = checksum + seeprom[k];
6985 * Reset the chip select for the next command cycle.
6987 aic_outb(p, 0, SEECTL_2840);
6989 aic_outb(p, CK_2840, SEECTL_2840);
6991 aic_outb(p, 0, SEECTL_2840);
6996 printk("Computed checksum 0x%x, checksum read 0x%x\n", checksum, sc->checksum);
6997 printk("Serial EEPROM:");
6998 for (k = 0; k < (sizeof(*sc) / 2); k++)
7000 if (((k % 8) == 0) && (k != 0))
7004 printk(" 0x%x", seeprom[k]);
7009 if (checksum != sc->checksum)
7011 printk("aic7xxx: SEEPROM checksum error, ignoring SEEPROM settings.\n");
7019 #define CLOCK_PULSE(p) \
7024 pause_sequencer(p); /* This is just to generate some PCI */ \
7025 /* traffic so the PCI read is flushed */ \
7026 /* it shouldn't be needed, but some */ \
7027 /* chipsets do indeed appear to need */ \
7028 /* something to force PCI reads to get */ \
7030 udelay(1); /* Do nothing */ \
7031 } while (((aic_inb(p, SEECTL) & SEERDY) == 0) && (++limit < 1000)); \
7034 /*+F*************************************************************************
7039 * Acquires access to the memory port on PCI controllers.
7040 *-F*************************************************************************/
7042 acquire_seeprom(struct aic7xxx_host *p)
7046 * Request access of the memory port. When access is
7047 * granted, SEERDY will go high. We use a 1 second
7048 * timeout which should be near 1 second more than
7049 * is needed. Reason: after the 7870 chip reset, there
7050 * should be no contention.
7052 aic_outb(p, SEEMS, SEECTL);
7054 if ((aic_inb(p, SEECTL) & SEERDY) == 0)
7056 aic_outb(p, 0, SEECTL);
7062 /*+F*************************************************************************
7067 * Releases access to the memory port on PCI controllers.
7068 *-F*************************************************************************/
7070 release_seeprom(struct aic7xxx_host *p)
7073 * Make sure the SEEPROM is ready before we release it.
7076 aic_outb(p, 0, SEECTL);
7079 /*+F*************************************************************************
7084 * Reads the serial EEPROM and returns 1 if successful and 0 if
7087 * The instruction set of the 93C46/56/66 chips is as follows:
7090 * Function Bit Code Address Data Description
7091 * -------------------------------------------------------------------
7092 * READ 1 10 A5 - A0 Reads data stored in memory,
7093 * starting at specified address
7094 * EWEN 1 00 11XXXX Write enable must precede
7095 * all programming modes
7096 * ERASE 1 11 A5 - A0 Erase register A5A4A3A2A1A0
7097 * WRITE 1 01 A5 - A0 D15 - D0 Writes register
7098 * ERAL 1 00 10XXXX Erase all registers
7099 * WRAL 1 00 01XXXX D15 - D0 Writes to all registers
7100 * EWDS 1 00 00XXXX Disables all programming
7102 * *Note: A value of X for address is a don't care condition.
7103 * *Note: The 93C56 and 93C66 have 8 address bits.
7106 * The 93C46 has a four wire interface: clock, chip select, data in, and
7107 * data out. In order to perform one of the above functions, you need
7108 * to enable the chip select for a clock period (typically a minimum of
7109 * 1 usec, with the clock high and low a minimum of 750 and 250 nsec
7110 * respectively. While the chip select remains high, you can clock in
7111 * the instructions (above) starting with the start bit, followed by the
7112 * OP code, Address, and Data (if needed). For the READ instruction, the
7113 * requested 16-bit register contents is read from the data out line but
7114 * is preceded by an initial zero (leading 0, followed by 16-bits, MSB
7115 * first). The clock cycling from low to high initiates the next data
7116 * bit to be sent from the chip.
7118 * The 78xx interface to the 93C46 serial EEPROM is through the SEECTL
7119 * register. After successful arbitration for the memory port, the
7120 * SEECS bit of the SEECTL register is connected to the chip select.
7121 * The SEECK, SEEDO, and SEEDI are connected to the clock, data out,
7122 * and data in lines respectively. The SEERDY bit of SEECTL is useful
7123 * in that it gives us an 800 nsec timer. After a write to the SEECTL
7124 * register, the SEERDY goes high 800 nsec later. The one exception
7125 * to this is when we first request access to the memory port. The
7126 * SEERDY goes high to signify that access has been granted and, for
7127 * this case, has no implied timing.
7128 *-F*************************************************************************/
7130 read_seeprom(struct aic7xxx_host *p, int offset,
7131 unsigned short *scarray, unsigned int len, seeprom_chip_type chip)
7135 unsigned short checksum = 0;
7136 struct seeprom_cmd {
7138 unsigned char bits[3];
7140 struct seeprom_cmd seeprom_read = {3, {1, 1, 0}};
7143 * Request access of the memory port.
7145 if (acquire_seeprom(p) == 0)
7151 * Read 'len' registers of the seeprom. For the 7870, the 93C46
7152 * SEEPROM is a 1024-bit device with 64 16-bit registers but only
7153 * the first 32 are used by Adaptec BIOS. Some adapters use the
7154 * 93C56 SEEPROM which is a 2048-bit device. The loop will range
7155 * from 0 to 'len' - 1.
7157 for (k = 0; k < len; k++)
7160 * Send chip select for one clock cycle.
7162 aic_outb(p, SEEMS | SEECK | SEECS, SEECTL);
7166 * Now we're ready to send the read command followed by the
7167 * address of the 16-bit register we want to read.
7169 for (i = 0; i < seeprom_read.len; i++)
7171 temp = SEEMS | SEECS | (seeprom_read.bits[i] << 1);
7172 aic_outb(p, temp, SEECTL);
7174 temp = temp ^ SEECK;
7175 aic_outb(p, temp, SEECTL);
7179 * Send the 6 or 8 bit address (MSB first, LSB last).
7181 for (i = ((int) chip - 1); i >= 0; i--)
7184 temp = (temp >> i) & 1; /* Mask out all but lower bit. */
7185 temp = SEEMS | SEECS | (temp << 1);
7186 aic_outb(p, temp, SEECTL);
7188 temp = temp ^ SEECK;
7189 aic_outb(p, temp, SEECTL);
7194 * Now read the 16 bit register. An initial 0 precedes the
7195 * register contents which begins with bit 15 (MSB) and ends
7196 * with bit 0 (LSB). The initial 0 will be shifted off the
7197 * top of our word as we let the loop run from 0 to 16.
7199 for (i = 0; i <= 16; i++)
7201 temp = SEEMS | SEECS;
7202 aic_outb(p, temp, SEECTL);
7204 temp = temp ^ SEECK;
7205 scarray[k] = (scarray[k] << 1) | (aic_inb(p, SEECTL) & SEEDI);
7206 aic_outb(p, temp, SEECTL);
7211 * The serial EEPROM should have a checksum in the last word.
7212 * Keep a running checksum for all words read except for the
7213 * last word. We'll verify the checksum after all words have
7218 checksum = checksum + scarray[k];
7222 * Reset the chip select for the next command cycle.
7224 aic_outb(p, SEEMS, SEECTL);
7226 aic_outb(p, SEEMS | SEECK, SEECTL);
7228 aic_outb(p, SEEMS, SEECTL);
7233 * Release access to the memory port and the serial EEPROM.
7238 printk("Computed checksum 0x%x, checksum read 0x%x\n",
7239 checksum, scarray[len - 1]);
7240 printk("Serial EEPROM:");
7241 for (k = 0; k < len; k++)
7243 if (((k % 8) == 0) && (k != 0))
7247 printk(" 0x%x", scarray[k]);
7251 if ( (checksum != scarray[len - 1]) || (checksum == 0) )
7259 /*+F*************************************************************************
7264 * Reads the BRDCTL register.
7265 *-F*************************************************************************/
7266 static unsigned char
7267 read_brdctl(struct aic7xxx_host *p)
7269 unsigned char brdctl, value;
7272 * Make sure the SEEPROM is ready before we access it
7275 if (p->features & AHC_ULTRA2)
7277 brdctl = BRDRW_ULTRA2;
7278 aic_outb(p, brdctl, BRDCTL);
7280 value = aic_inb(p, BRDCTL);
7285 if ( !((p->chip & AHC_CHIPID_MASK) == AHC_AIC7895) ||
7286 (p->flags & AHC_CHNLB) )
7290 aic_outb(p, brdctl, BRDCTL);
7292 value = aic_inb(p, BRDCTL);
7294 aic_outb(p, 0, BRDCTL);
7299 /*+F*************************************************************************
7304 * Writes a value to the BRDCTL register.
7305 *-F*************************************************************************/
7307 write_brdctl(struct aic7xxx_host *p, unsigned char value)
7309 unsigned char brdctl;
7312 * Make sure the SEEPROM is ready before we access it
7315 if (p->features & AHC_ULTRA2)
7318 aic_outb(p, brdctl, BRDCTL);
7320 brdctl |= BRDSTB_ULTRA2;
7321 aic_outb(p, brdctl, BRDCTL);
7323 brdctl &= ~BRDSTB_ULTRA2;
7324 aic_outb(p, brdctl, BRDCTL);
7332 if ( !((p->chip & AHC_CHIPID_MASK) == AHC_AIC7895) ||
7333 (p->flags & AHC_CHNLB) )
7337 brdctl = BRDSTB | BRDCS;
7338 aic_outb(p, brdctl, BRDCTL);
7341 aic_outb(p, brdctl, BRDCTL);
7344 aic_outb(p, brdctl, BRDCTL);
7347 aic_outb(p, brdctl, BRDCTL);
7352 /*+F*************************************************************************
7354 * aic785x_cable_detect
7357 * Detect the cables that are present on aic785x class controller chips
7358 *-F*************************************************************************/
7360 aic785x_cable_detect(struct aic7xxx_host *p, int *int_50,
7361 int *ext_present, int *eeprom)
7363 unsigned char brdctl;
7365 aic_outb(p, BRDRW | BRDCS, BRDCTL);
7367 aic_outb(p, 0, BRDCTL);
7369 brdctl = aic_inb(p, BRDCTL);
7371 *int_50 = !(brdctl & BRDDAT5);
7372 *ext_present = !(brdctl & BRDDAT6);
7373 *eeprom = (aic_inb(p, SPIOCAP) & EEPROM);
7378 /*+F*************************************************************************
7380 * aic2940_uwpro_cable_detect
7383 * Detect the cables that are present on the 2940-UWPro cards
7385 * NOTE: This function assumes the SEEPROM will have already been acquired
7386 * prior to invocation of this function.
7387 *-F*************************************************************************/
7389 aic2940_uwpro_wide_cable_detect(struct aic7xxx_host *p, int *int_68,
7390 int *ext_68, int *eeprom)
7392 unsigned char brdctl;
7395 * First read the status of our cables. Set the rom bank to
7396 * 0 since the bank setting serves as a multiplexor for the
7397 * cable detection logic. BRDDAT5 controls the bank switch.
7402 * Now we read the state of the internal 68 connector. BRDDAT6
7403 * is don't care, BRDDAT7 is internal 68. The cable is
7404 * present if the bit is 0
7406 brdctl = read_brdctl(p);
7407 *int_68 = !(brdctl & BRDDAT7);
7410 * Set the bank bit in brdctl and then read the external cable state
7411 * and the EEPROM status
7413 write_brdctl(p, BRDDAT5);
7414 brdctl = read_brdctl(p);
7416 *ext_68 = !(brdctl & BRDDAT6);
7417 *eeprom = !(brdctl & BRDDAT7);
7420 * We're done, the calling function will release the SEEPROM for us
7424 /*+F*************************************************************************
7426 * aic787x_cable_detect
7429 * Detect the cables that are present on aic787x class controller chips
7431 * NOTE: This function assumes the SEEPROM will have already been acquired
7432 * prior to invocation of this function.
7433 *-F*************************************************************************/
7435 aic787x_cable_detect(struct aic7xxx_host *p, int *int_50, int *int_68,
7436 int *ext_present, int *eeprom)
7438 unsigned char brdctl;
7441 * First read the status of our cables. Set the rom bank to
7442 * 0 since the bank setting serves as a multiplexor for the
7443 * cable detection logic. BRDDAT5 controls the bank switch.
7448 * Now we read the state of the two internal connectors. BRDDAT6
7449 * is internal 50, BRDDAT7 is internal 68. For each, the cable is
7450 * present if the bit is 0
7452 brdctl = read_brdctl(p);
7453 *int_50 = !(brdctl & BRDDAT6);
7454 *int_68 = !(brdctl & BRDDAT7);
7457 * Set the bank bit in brdctl and then read the external cable state
7458 * and the EEPROM status
7460 write_brdctl(p, BRDDAT5);
7461 brdctl = read_brdctl(p);
7463 *ext_present = !(brdctl & BRDDAT6);
7464 *eeprom = !(brdctl & BRDDAT7);
7467 * We're done, the calling function will release the SEEPROM for us
7471 /*+F*************************************************************************
7473 * aic787x_ultra2_term_detect
7476 * Detect the termination settings present on ultra2 class controllers
7478 * NOTE: This function assumes the SEEPROM will have already been acquired
7479 * prior to invocation of this function.
7480 *-F*************************************************************************/
7482 aic7xxx_ultra2_term_detect(struct aic7xxx_host *p, int *enableSE_low,
7483 int *enableSE_high, int *enableLVD_low,
7484 int *enableLVD_high, int *eprom_present)
7486 unsigned char brdctl;
7488 brdctl = read_brdctl(p);
7490 *eprom_present = (brdctl & BRDDAT7);
7491 *enableSE_high = (brdctl & BRDDAT6);
7492 *enableSE_low = (brdctl & BRDDAT5);
7493 *enableLVD_high = (brdctl & BRDDAT4);
7494 *enableLVD_low = (brdctl & BRDDAT3);
7497 /*+F*************************************************************************
7499 * configure_termination
7502 * Configures the termination settings on PCI adapters that have
7503 * SEEPROMs available.
7504 *-F*************************************************************************/
7506 configure_termination(struct aic7xxx_host *p)
7508 int internal50_present = 0;
7509 int internal68_present = 0;
7510 int external_present = 0;
7511 int eprom_present = 0;
7512 int enableSE_low = 0;
7513 int enableSE_high = 0;
7514 int enableLVD_low = 0;
7515 int enableLVD_high = 0;
7516 unsigned char brddat = 0;
7517 unsigned char max_target = 0;
7518 unsigned char sxfrctl1 = aic_inb(p, SXFRCTL1);
7520 if (acquire_seeprom(p))
7522 if (p->features & (AHC_WIDE|AHC_TWIN))
7526 aic_outb(p, SEEMS | SEECS, SEECTL);
7527 sxfrctl1 &= ~STPWEN;
7529 * The termination/cable detection logic is split into three distinct
7530 * groups. Ultra2 and later controllers, 2940UW-Pro controllers, and
7531 * older 7850, 7860, 7870, 7880, and 7895 controllers. Each has its
7532 * own unique way of detecting their cables and writing the results
7535 if (p->features & AHC_ULTRA2)
7538 * As long as user hasn't overridden term settings, always check the
7539 * cable detection logic
7541 if (aic7xxx_override_term == -1)
7543 aic7xxx_ultra2_term_detect(p, &enableSE_low, &enableSE_high,
7544 &enableLVD_low, &enableLVD_high,
7549 * If the user is overriding settings, then they have been preserved
7550 * to here as fake adapter_control entries. Parse them and allow
7551 * them to override the detected settings (if we even did detection).
7553 if (!(p->adapter_control & CFSEAUTOTERM))
7555 enableSE_low = (p->adapter_control & CFSTERM);
7556 enableSE_high = (p->adapter_control & CFWSTERM);
7558 if (!(p->adapter_control & CFAUTOTERM))
7560 enableLVD_low = enableLVD_high = (p->adapter_control & CFLVDSTERM);
7564 * Now take those settings that we have and translate them into the
7565 * values that must be written into the registers.
7567 * Flash Enable = BRDDAT7
7568 * Secondary High Term Enable = BRDDAT6
7569 * Secondary Low Term Enable = BRDDAT5
7570 * LVD/Primary High Term Enable = BRDDAT4
7571 * LVD/Primary Low Term Enable = STPWEN bit in SXFRCTL1
7573 if (enableLVD_low != 0)
7576 p->flags |= AHC_TERM_ENB_LVD;
7577 if (aic7xxx_verbose & VERBOSE_PROBE2)
7578 printk(KERN_INFO "(scsi%d) LVD/Primary Low byte termination "
7579 "Enabled\n", p->host_no);
7582 if (enableLVD_high != 0)
7585 if (aic7xxx_verbose & VERBOSE_PROBE2)
7586 printk(KERN_INFO "(scsi%d) LVD/Primary High byte termination "
7587 "Enabled\n", p->host_no);
7590 if (enableSE_low != 0)
7593 if (aic7xxx_verbose & VERBOSE_PROBE2)
7594 printk(KERN_INFO "(scsi%d) Secondary Low byte termination "
7595 "Enabled\n", p->host_no);
7598 if (enableSE_high != 0)
7601 if (aic7xxx_verbose & VERBOSE_PROBE2)
7602 printk(KERN_INFO "(scsi%d) Secondary High byte termination "
7603 "Enabled\n", p->host_no);
7606 else if (p->features & AHC_NEW_AUTOTERM)
7609 * The 50 pin connector termination is controlled by STPWEN in the
7610 * SXFRCTL1 register. Since the Adaptec docs typically say the
7611 * controller is not allowed to be in the middle of a cable and
7612 * this is the only connection on that stub of the bus, there is
7613 * no need to even check for narrow termination, it's simply
7617 if (aic7xxx_verbose & VERBOSE_PROBE2)
7618 printk(KERN_INFO "(scsi%d) Narrow channel termination Enabled\n",
7621 if (p->adapter_control & CFAUTOTERM)
7623 aic2940_uwpro_wide_cable_detect(p, &internal68_present,
7626 printk(KERN_INFO "(scsi%d) Cables present (Int-50 %s, Int-68 %s, "
7627 "Ext-68 %s)\n", p->host_no,
7629 internal68_present ? "YES" : "NO",
7630 external_present ? "YES" : "NO");
7631 if (aic7xxx_verbose & VERBOSE_PROBE2)
7632 printk(KERN_INFO "(scsi%d) EEPROM %s present.\n", p->host_no,
7633 eprom_present ? "is" : "is not");
7634 if (internal68_present && external_present)
7637 p->flags &= ~AHC_TERM_ENB_SE_HIGH;
7638 if (aic7xxx_verbose & VERBOSE_PROBE2)
7639 printk(KERN_INFO "(scsi%d) Wide channel termination Disabled\n",
7645 p->flags |= AHC_TERM_ENB_SE_HIGH;
7646 if (aic7xxx_verbose & VERBOSE_PROBE2)
7647 printk(KERN_INFO "(scsi%d) Wide channel termination Enabled\n",
7654 * The termination of the Wide channel is done more like normal
7655 * though, and the setting of this termination is done by writing
7656 * either a 0 or 1 to BRDDAT6 of the BRDDAT register
7658 if (p->adapter_control & CFWSTERM)
7661 p->flags |= AHC_TERM_ENB_SE_HIGH;
7662 if (aic7xxx_verbose & VERBOSE_PROBE2)
7663 printk(KERN_INFO "(scsi%d) Wide channel termination Enabled\n",
7674 if (p->adapter_control & CFAUTOTERM)
7676 if (p->flags & AHC_MOTHERBOARD)
7678 printk(KERN_INFO "(scsi%d) Warning - detected auto-termination\n",
7680 printk(KERN_INFO "(scsi%d) Please verify driver detected settings "
7681 "are correct.\n", p->host_no);
7682 printk(KERN_INFO "(scsi%d) If not, then please properly set the "
7683 "device termination\n", p->host_no);
7684 printk(KERN_INFO "(scsi%d) in the Adaptec SCSI BIOS by hitting "
7685 "CTRL-A when prompted\n", p->host_no);
7686 printk(KERN_INFO "(scsi%d) during machine bootup.\n", p->host_no);
7688 /* Configure auto termination. */
7690 if ( (p->chip & AHC_CHIPID_MASK) >= AHC_AIC7870 )
7692 aic787x_cable_detect(p, &internal50_present, &internal68_present,
7693 &external_present, &eprom_present);
7697 aic785x_cable_detect(p, &internal50_present, &external_present,
7701 if (max_target <= 8)
7702 internal68_present = 0;
7706 printk(KERN_INFO "(scsi%d) Cables present (Int-50 %s, Int-68 %s, "
7707 "Ext-68 %s)\n", p->host_no,
7708 internal50_present ? "YES" : "NO",
7709 internal68_present ? "YES" : "NO",
7710 external_present ? "YES" : "NO");
7714 printk(KERN_INFO "(scsi%d) Cables present (Int-50 %s, Ext-50 %s)\n",
7716 internal50_present ? "YES" : "NO",
7717 external_present ? "YES" : "NO");
7719 if (aic7xxx_verbose & VERBOSE_PROBE2)
7720 printk(KERN_INFO "(scsi%d) EEPROM %s present.\n", p->host_no,
7721 eprom_present ? "is" : "is not");
7724 * Now set the termination based on what we found. BRDDAT6
7725 * controls wide termination enable.
7726 * Flash Enable = BRDDAT7
7727 * SE High Term Enable = BRDDAT6
7729 if (internal50_present && internal68_present && external_present)
7731 printk(KERN_INFO "(scsi%d) Illegal cable configuration!! Only two\n",
7733 printk(KERN_INFO "(scsi%d) connectors on the SCSI controller may be "
7734 "in use at a time!\n", p->host_no);
7736 * Force termination (low and high byte) on. This is safer than
7737 * leaving it completely off, especially since this message comes
7738 * most often from motherboard controllers that don't even have 3
7739 * connectors, but instead are failing the cable detection.
7741 internal50_present = external_present = 0;
7742 enableSE_high = enableSE_low = 1;
7745 if ((max_target > 8) &&
7746 ((external_present == 0) || (internal68_present == 0)) )
7749 p->flags |= AHC_TERM_ENB_SE_HIGH;
7750 if (aic7xxx_verbose & VERBOSE_PROBE2)
7751 printk(KERN_INFO "(scsi%d) SE High byte termination Enabled\n",
7755 if ( ((internal50_present ? 1 : 0) +
7756 (internal68_present ? 1 : 0) +
7757 (external_present ? 1 : 0)) <= 1 )
7760 p->flags |= AHC_TERM_ENB_SE_LOW;
7761 if (aic7xxx_verbose & VERBOSE_PROBE2)
7762 printk(KERN_INFO "(scsi%d) SE Low byte termination Enabled\n",
7766 else /* p->adapter_control & CFAUTOTERM */
7768 if (p->adapter_control & CFSTERM)
7771 if (aic7xxx_verbose & VERBOSE_PROBE2)
7772 printk(KERN_INFO "(scsi%d) SE Low byte termination Enabled\n",
7776 if (p->adapter_control & CFWSTERM)
7779 if (aic7xxx_verbose & VERBOSE_PROBE2)
7780 printk(KERN_INFO "(scsi%d) SE High byte termination Enabled\n",
7786 aic_outb(p, sxfrctl1, SXFRCTL1);
7787 write_brdctl(p, brddat);
7792 /*+F*************************************************************************
7797 * Detects the maximum number of SCBs for the controller and returns
7798 * the count and a mask in p (p->maxscbs, p->qcntmask).
7799 *-F*************************************************************************/
7801 detect_maxscb(struct aic7xxx_host *p)
7806 * It's possible that we've already done this for multichannel
7809 if (p->scb_data->maxhscbs == 0)
7812 * We haven't initialized the SCB settings yet. Walk the SCBs to
7813 * determince how many there are.
7815 aic_outb(p, 0, FREE_SCBH);
7817 for (i = 0; i < AIC7XXX_MAXSCB; i++)
7819 aic_outb(p, i, SCBPTR);
7820 aic_outb(p, i, SCB_CONTROL);
7821 if (aic_inb(p, SCB_CONTROL) != i)
7823 aic_outb(p, 0, SCBPTR);
7824 if (aic_inb(p, SCB_CONTROL) != 0)
7827 aic_outb(p, i, SCBPTR);
7828 aic_outb(p, 0, SCB_CONTROL); /* Clear the control byte. */
7829 aic_outb(p, i + 1, SCB_NEXT); /* Set the next pointer. */
7830 aic_outb(p, SCB_LIST_NULL, SCB_TAG); /* Make the tag invalid. */
7831 aic_outb(p, SCB_LIST_NULL, SCB_BUSYTARGETS); /* no busy untagged */
7832 aic_outb(p, SCB_LIST_NULL, SCB_BUSYTARGETS+1);/* targets active yet */
7833 aic_outb(p, SCB_LIST_NULL, SCB_BUSYTARGETS+2);
7834 aic_outb(p, SCB_LIST_NULL, SCB_BUSYTARGETS+3);
7837 /* Make sure the last SCB terminates the free list. */
7838 aic_outb(p, i - 1, SCBPTR);
7839 aic_outb(p, SCB_LIST_NULL, SCB_NEXT);
7841 /* Ensure we clear the first (0) SCBs control byte. */
7842 aic_outb(p, 0, SCBPTR);
7843 aic_outb(p, 0, SCB_CONTROL);
7845 p->scb_data->maxhscbs = i;
7847 * Use direct indexing instead for speed
7849 if ( i == AIC7XXX_MAXSCB )
7850 p->flags &= ~AHC_PAGESCBS;
7855 /*+F*************************************************************************
7860 * Register a Adaptec aic7xxx chip SCSI controller with the kernel.
7861 *-F*************************************************************************/
7863 aic7xxx_register(struct scsi_host_template *template, struct aic7xxx_host *p,
7869 unsigned char term, scsi_conf;
7870 struct Scsi_Host *host;
7874 p->scb_data->maxscbs = AIC7XXX_MAXSCB;
7875 host->can_queue = AIC7XXX_MAXSCB;
7876 host->cmd_per_lun = 3;
7877 host->sg_tablesize = AIC7XXX_MAX_SG;
7878 host->this_id = p->scsi_id;
7879 host->io_port = p->base;
7880 host->n_io_port = 0xFF;
7881 host->base = p->mbase;
7883 if (p->features & AHC_WIDE)
7887 if (p->features & AHC_TWIN)
7889 host->max_channel = 1;
7893 p->host_no = host->host_no;
7894 host->unique_id = p->instance;
7897 p->completeq.head = NULL;
7898 p->completeq.tail = NULL;
7899 scbq_init(&p->scb_data->free_scbs);
7900 scbq_init(&p->waiting_scbs);
7901 INIT_LIST_HEAD(&p->aic_devs);
7904 * We currently have no commands of any type
7907 p->qoutfifonext = 0;
7909 printk(KERN_INFO "(scsi%d) <%s> found at ", p->host_no,
7910 board_names[p->board_name_index]);
7913 case (AHC_AIC7770|AHC_EISA):
7914 printk("EISA slot %d\n", p->pci_device_fn);
7916 case (AHC_AIC7770|AHC_VL):
7917 printk("VLB slot %d\n", p->pci_device_fn);
7920 printk("PCI %d/%d/%d\n", p->pci_bus, PCI_SLOT(p->pci_device_fn),
7921 PCI_FUNC(p->pci_device_fn));
7924 if (p->features & AHC_TWIN)
7926 printk(KERN_INFO "(scsi%d) Twin Channel, A SCSI ID %d, B SCSI ID %d, ",
7927 p->host_no, p->scsi_id, p->scsi_id_b);
7935 if ((p->flags & AHC_MULTI_CHANNEL) != 0)
7939 if ( (p->flags & (AHC_CHNLB|AHC_CHNLC)) != 0 )
7941 channel = (p->flags & AHC_CHNLB) ? " B" : " C";
7944 if (p->features & AHC_WIDE)
7946 printk(KERN_INFO "(scsi%d) Wide ", p->host_no);
7950 printk(KERN_INFO "(scsi%d) Narrow ", p->host_no);
7952 printk("Channel%s, SCSI ID=%d, ", channel, p->scsi_id);
7954 aic_outb(p, 0, SEQ_FLAGS);
7958 printk("%d/%d SCBs\n", p->scb_data->maxhscbs, p->scb_data->maxscbs);
7959 if (aic7xxx_verbose & VERBOSE_PROBE2)
7961 printk(KERN_INFO "(scsi%d) BIOS %sabled, IO Port 0x%lx, IRQ %d\n",
7962 p->host_no, (p->flags & AHC_BIOS_ENABLED) ? "en" : "dis",
7964 printk(KERN_INFO "(scsi%d) IO Memory at 0x%lx, MMAP Memory at %p\n",
7965 p->host_no, p->mbase, p->maddr);
7970 * Now that we know our instance number, we can set the flags we need to
7971 * force termination if need be.
7973 if (aic7xxx_stpwlev != -1)
7976 * This option only applies to PCI controllers.
7978 if ( (p->chip & ~AHC_CHIPID_MASK) == AHC_PCI)
7980 unsigned char devconfig;
7982 pci_read_config_byte(p->pdev, DEVCONFIG, &devconfig);
7983 if ( (aic7xxx_stpwlev >> p->instance) & 0x01 )
7985 devconfig |= STPWLEVEL;
7986 if (aic7xxx_verbose & VERBOSE_PROBE2)
7987 printk("(scsi%d) Force setting STPWLEVEL bit\n", p->host_no);
7991 devconfig &= ~STPWLEVEL;
7992 if (aic7xxx_verbose & VERBOSE_PROBE2)
7993 printk("(scsi%d) Force clearing STPWLEVEL bit\n", p->host_no);
7995 pci_write_config_byte(p->pdev, DEVCONFIG, devconfig);
8001 * That took care of devconfig and stpwlev, now for the actual termination
8004 if (aic7xxx_override_term != -1)
8007 * Again, this only applies to PCI controllers. We don't have problems
8008 * with the termination on 274x controllers to the best of my knowledge.
8010 if ( (p->chip & ~AHC_CHIPID_MASK) == AHC_PCI)
8012 unsigned char term_override;
8014 term_override = ( (aic7xxx_override_term >> (p->instance * 4)) & 0x0f);
8015 p->adapter_control &=
8016 ~(CFSTERM|CFWSTERM|CFLVDSTERM|CFAUTOTERM|CFSEAUTOTERM);
8017 if ( (p->features & AHC_ULTRA2) && (term_override & 0x0c) )
8019 p->adapter_control |= CFLVDSTERM;
8021 if (term_override & 0x02)
8023 p->adapter_control |= CFWSTERM;
8025 if (term_override & 0x01)
8027 p->adapter_control |= CFSTERM;
8032 if ( (p->flags & AHC_SEEPROM_FOUND) || (aic7xxx_override_term != -1) )
8034 if (p->features & AHC_SPIOCAP)
8036 if ( aic_inb(p, SPIOCAP) & SSPIOCPS )
8038 * Update the settings in sxfrctl1 to match the termination
8041 configure_termination(p);
8043 else if ((p->chip & AHC_CHIPID_MASK) >= AHC_AIC7870)
8045 configure_termination(p);
8050 * Set the SCSI Id, SXFRCTL0, SXFRCTL1, and SIMODE1, for both channels
8052 if (p->features & AHC_TWIN)
8054 /* Select channel B */
8055 aic_outb(p, aic_inb(p, SBLKCTL) | SELBUSB, SBLKCTL);
8057 if ((p->flags & AHC_SEEPROM_FOUND) || (aic7xxx_override_term != -1))
8058 term = (aic_inb(p, SXFRCTL1) & STPWEN);
8060 term = ((p->flags & AHC_TERM_ENB_B) ? STPWEN : 0);
8062 aic_outb(p, p->scsi_id_b, SCSIID);
8063 scsi_conf = aic_inb(p, SCSICONF + 1);
8064 aic_outb(p, DFON | SPIOEN, SXFRCTL0);
8065 aic_outb(p, (scsi_conf & ENSPCHK) | aic7xxx_seltime | term |
8066 ENSTIMER | ACTNEGEN, SXFRCTL1);
8067 aic_outb(p, 0, SIMODE0);
8068 aic_outb(p, ENSELTIMO | ENSCSIRST | ENSCSIPERR, SIMODE1);
8069 aic_outb(p, 0, SCSIRATE);
8071 /* Select channel A */
8072 aic_outb(p, aic_inb(p, SBLKCTL) & ~SELBUSB, SBLKCTL);
8075 if (p->features & AHC_ULTRA2)
8077 aic_outb(p, p->scsi_id, SCSIID_ULTRA2);
8081 aic_outb(p, p->scsi_id, SCSIID);
8083 if ((p->flags & AHC_SEEPROM_FOUND) || (aic7xxx_override_term != -1))
8084 term = (aic_inb(p, SXFRCTL1) & STPWEN);
8086 term = ((p->flags & (AHC_TERM_ENB_A|AHC_TERM_ENB_LVD)) ? STPWEN : 0);
8087 scsi_conf = aic_inb(p, SCSICONF);
8088 aic_outb(p, DFON | SPIOEN, SXFRCTL0);
8089 aic_outb(p, (scsi_conf & ENSPCHK) | aic7xxx_seltime | term |
8090 ENSTIMER | ACTNEGEN, SXFRCTL1);
8091 aic_outb(p, 0, SIMODE0);
8093 * If we are a cardbus adapter then don't enable SCSI reset detection.
8094 * We shouldn't likely be sharing SCSI busses with someone else, and
8095 * if we don't have a cable currently plugged into the controller then
8096 * we won't have a power source for the SCSI termination, which means
8097 * we'll see infinite incoming bus resets.
8099 if(p->flags & AHC_NO_STPWEN)
8100 aic_outb(p, ENSELTIMO | ENSCSIPERR, SIMODE1);
8102 aic_outb(p, ENSELTIMO | ENSCSIRST | ENSCSIPERR, SIMODE1);
8103 aic_outb(p, 0, SCSIRATE);
8104 if ( p->features & AHC_ULTRA2)
8105 aic_outb(p, 0, SCSIOFFSET);
8108 * Look at the information that board initialization or the board
8109 * BIOS has left us. In the lower four bits of each target's
8110 * scratch space any value other than 0 indicates that we should
8111 * initiate synchronous transfers. If it's zero, the user or the
8112 * BIOS has decided to disable synchronous negotiation to that
8113 * target so we don't activate the needsdtr flag.
8115 if ((p->features & (AHC_TWIN|AHC_WIDE)) == 0)
8124 if (!(aic7xxx_no_reset))
8127 * If we reset the bus, then clear the transfer settings, else leave
8130 aic_outb(p, 0, ULTRA_ENB);
8131 aic_outb(p, 0, ULTRA_ENB + 1);
8136 * Allocate enough hardware scbs to handle the maximum number of
8137 * concurrent transactions we can have. We have to make sure that
8138 * the allocated memory is contiguous memory. The Linux kmalloc
8139 * routine should only allocate contiguous memory, but note that
8140 * this could be a problem if kmalloc() is changed.
8144 unsigned int hscb_physaddr;
8146 array_size = p->scb_data->maxscbs * sizeof(struct aic7xxx_hwscb);
8147 if (p->scb_data->hscbs == NULL)
8149 /* pci_alloc_consistent enforces the alignment already and
8150 * clears the area as well.
8152 p->scb_data->hscbs = pci_alloc_consistent(p->pdev, array_size,
8153 &p->scb_data->hscbs_dma);
8154 /* We have to use pci_free_consistent, not kfree */
8155 p->scb_data->hscb_kmalloc_ptr = NULL;
8156 p->scb_data->hscbs_dma_len = array_size;
8158 if (p->scb_data->hscbs == NULL)
8160 printk("(scsi%d) Unable to allocate hardware SCB array; "
8161 "failing detection.\n", p->host_no);
8162 aic_outb(p, 0, SIMODE1);
8167 hscb_physaddr = p->scb_data->hscbs_dma;
8168 aic_outb(p, hscb_physaddr & 0xFF, HSCB_ADDR);
8169 aic_outb(p, (hscb_physaddr >> 8) & 0xFF, HSCB_ADDR + 1);
8170 aic_outb(p, (hscb_physaddr >> 16) & 0xFF, HSCB_ADDR + 2);
8171 aic_outb(p, (hscb_physaddr >> 24) & 0xFF, HSCB_ADDR + 3);
8173 /* Set up the fifo areas at the same time */
8174 p->untagged_scbs = pci_alloc_consistent(p->pdev, 3*256, &p->fifo_dma);
8175 if (p->untagged_scbs == NULL)
8177 printk("(scsi%d) Unable to allocate hardware FIFO arrays; "
8178 "failing detection.\n", p->host_no);
8183 p->qoutfifo = p->untagged_scbs + 256;
8184 p->qinfifo = p->qoutfifo + 256;
8185 for (i = 0; i < 256; i++)
8187 p->untagged_scbs[i] = SCB_LIST_NULL;
8188 p->qinfifo[i] = SCB_LIST_NULL;
8189 p->qoutfifo[i] = SCB_LIST_NULL;
8192 hscb_physaddr = p->fifo_dma;
8193 aic_outb(p, hscb_physaddr & 0xFF, SCBID_ADDR);
8194 aic_outb(p, (hscb_physaddr >> 8) & 0xFF, SCBID_ADDR + 1);
8195 aic_outb(p, (hscb_physaddr >> 16) & 0xFF, SCBID_ADDR + 2);
8196 aic_outb(p, (hscb_physaddr >> 24) & 0xFF, SCBID_ADDR + 3);
8199 /* The Q-FIFOs we just set up are all empty */
8200 aic_outb(p, 0, QINPOS);
8201 aic_outb(p, 0, KERNEL_QINPOS);
8202 aic_outb(p, 0, QOUTPOS);
8204 if(p->features & AHC_QUEUE_REGS)
8206 aic_outb(p, SCB_QSIZE_256, QOFF_CTLSTA);
8207 aic_outb(p, 0, SDSCB_QOFF);
8208 aic_outb(p, 0, SNSCB_QOFF);
8209 aic_outb(p, 0, HNSCB_QOFF);
8213 * We don't have any waiting selections or disconnected SCBs.
8215 aic_outb(p, SCB_LIST_NULL, WAITING_SCBH);
8216 aic_outb(p, SCB_LIST_NULL, DISCONNECTED_SCBH);
8219 * Message out buffer starts empty
8221 aic_outb(p, MSG_NOOP, MSG_OUT);
8222 aic_outb(p, MSG_NOOP, LAST_MSG);
8225 * Set all the other asundry items that haven't been set yet.
8226 * This includes just dumping init values to a lot of registers simply
8227 * to make sure they've been touched and are ready for use parity wise
8230 aic_outb(p, 0, TMODE_CMDADDR);
8231 aic_outb(p, 0, TMODE_CMDADDR + 1);
8232 aic_outb(p, 0, TMODE_CMDADDR + 2);
8233 aic_outb(p, 0, TMODE_CMDADDR + 3);
8234 aic_outb(p, 0, TMODE_CMDADDR_NEXT);
8237 * Link us into the list of valid hosts
8239 p->next = first_aic7xxx;
8243 * Allocate the first set of scbs for this controller. This is to stream-
8244 * line code elsewhere in the driver. If we have to check for the existence
8245 * of scbs in certain code sections, it slows things down. However, as
8246 * soon as we register the IRQ for this card, we could get an interrupt that
8247 * includes possibly the SCSI_RSTI interrupt. If we catch that interrupt
8248 * then we are likely to segfault if we don't have at least one chunk of
8249 * SCBs allocated or add checks all through the reset code to make sure
8250 * that the SCBs have been allocated which is an invalid running condition
8251 * and therefore I think it's preferable to simply pre-allocate the first
8254 aic7xxx_allocate_scb(p);
8257 * Load the sequencer program, then re-enable the board -
8258 * resetting the AIC-7770 disables it, leaving the lights
8259 * on with nobody home.
8264 * Make sure the AUTOFLUSHDIS bit is *not* set in the SBLKCTL register
8266 aic_outb(p, aic_inb(p, SBLKCTL) & ~AUTOFLUSHDIS, SBLKCTL);
8268 if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 )
8270 aic_outb(p, ENABLE, BCTL); /* Enable the boards BUS drivers. */
8273 if ( !(aic7xxx_no_reset) )
8275 if (p->features & AHC_TWIN)
8277 if (aic7xxx_verbose & VERBOSE_PROBE2)
8278 printk(KERN_INFO "(scsi%d) Resetting channel B\n", p->host_no);
8279 aic_outb(p, aic_inb(p, SBLKCTL) | SELBUSB, SBLKCTL);
8280 aic7xxx_reset_current_bus(p);
8281 aic_outb(p, aic_inb(p, SBLKCTL) & ~SELBUSB, SBLKCTL);
8283 /* Reset SCSI bus A. */
8284 if (aic7xxx_verbose & VERBOSE_PROBE2)
8285 { /* In case we are a 3940, 3985, or 7895, print the right channel */
8287 if (p->flags & AHC_MULTI_CHANNEL)
8290 if (p->flags & (AHC_CHNLB|AHC_CHNLC))
8291 channel = (p->flags & AHC_CHNLB) ? " B" : " C";
8293 printk(KERN_INFO "(scsi%d) Resetting channel%s\n", p->host_no, channel);
8296 aic7xxx_reset_current_bus(p);
8303 printk(KERN_INFO "(scsi%d) Not resetting SCSI bus. Note: Don't use "
8304 "the no_reset\n", p->host_no);
8305 printk(KERN_INFO "(scsi%d) option unless you have a verifiable need "
8306 "for it.\n", p->host_no);
8311 * Register IRQ with the kernel. Only allow sharing IRQs with
8314 if (!(p->chip & AHC_PCI))
8316 result = (request_irq(p->irq, do_aic7xxx_isr, 0, "aic7xxx", p));
8320 result = (request_irq(p->irq, do_aic7xxx_isr, IRQF_SHARED,
8324 result = (request_irq(p->irq, do_aic7xxx_isr, IRQF_DISABLED | IRQF_SHARED,
8330 printk(KERN_WARNING "(scsi%d) Couldn't register IRQ %d, ignoring "
8331 "controller.\n", p->host_no, p->irq);
8332 aic_outb(p, 0, SIMODE1);
8337 if(aic_inb(p, INTSTAT) & INT_PEND)
8338 printk(INFO_LEAD "spurious interrupt during configuration, cleared.\n",
8339 p->host_no, -1, -1 , -1);
8340 aic7xxx_clear_intstat(p);
8342 unpause_sequencer(p, /* unpause_always */ TRUE);
8347 /*+F*************************************************************************
8349 * aic7xxx_chip_reset
8352 * Perform a chip reset on the aic7xxx SCSI controller. The controller
8353 * is paused upon return.
8354 *-F*************************************************************************/
8356 aic7xxx_chip_reset(struct aic7xxx_host *p)
8358 unsigned char sblkctl;
8362 * For some 274x boards, we must clear the CHIPRST bit and pause
8363 * the sequencer. For some reason, this makes the driver work.
8365 aic_outb(p, PAUSE | CHIPRST, HCNTRL);
8368 * In the future, we may call this function as a last resort for
8369 * error handling. Let's be nice and not do any unnecessary delays.
8371 wait = 1000; /* 1 msec (1000 * 1 msec) */
8372 while (--wait && !(aic_inb(p, HCNTRL) & CHIPRSTACK))
8374 udelay(1); /* 1 usec */
8379 sblkctl = aic_inb(p, SBLKCTL) & (SELBUSB|SELWIDE);
8380 if (p->chip & AHC_PCI)
8381 sblkctl &= ~SELBUSB;
8384 case 0: /* normal narrow card */
8386 case 2: /* Wide card */
8387 p->features |= AHC_WIDE;
8389 case 8: /* Twin card */
8390 p->features |= AHC_TWIN;
8391 p->flags |= AHC_MULTI_CHANNEL;
8393 default: /* hmmm...we don't know what this is */
8394 printk(KERN_WARNING "aic7xxx: Unsupported adapter type %d, ignoring.\n",
8395 aic_inb(p, SBLKCTL) & 0x0a);
8401 /*+F*************************************************************************
8406 * Allocate and initialize a host structure. Returns NULL upon error
8407 * and a pointer to a aic7xxx_host struct upon success.
8408 *-F*************************************************************************/
8409 static struct aic7xxx_host *
8410 aic7xxx_alloc(struct scsi_host_template *sht, struct aic7xxx_host *temp)
8412 struct aic7xxx_host *p = NULL;
8413 struct Scsi_Host *host;
8416 * Allocate a storage area by registering us with the mid-level
8419 host = scsi_register(sht, sizeof(struct aic7xxx_host));
8423 p = (struct aic7xxx_host *) host->hostdata;
8424 memset(p, 0, sizeof(struct aic7xxx_host));
8428 p->scb_data = kmalloc(sizeof(scb_data_type), GFP_ATOMIC);
8429 if (p->scb_data != NULL)
8431 memset(p->scb_data, 0, sizeof(scb_data_type));
8432 scbq_init (&p->scb_data->free_scbs);
8437 * For some reason we don't have enough memory. Free the
8438 * allocated memory for the aic7xxx_host struct, and return NULL.
8440 release_region(p->base, MAXREG - MINREG);
8441 scsi_unregister(host);
8444 p->host_no = host->host_no;
8449 /*+F*************************************************************************
8454 * Frees and releases all resources associated with an instance of
8455 * the driver (struct aic7xxx_host *).
8456 *-F*************************************************************************/
8458 aic7xxx_free(struct aic7xxx_host *p)
8463 * Free the allocated hardware SCB space.
8465 if (p->scb_data != NULL)
8467 struct aic7xxx_scb_dma *scb_dma = NULL;
8468 if (p->scb_data->hscbs != NULL)
8470 pci_free_consistent(p->pdev, p->scb_data->hscbs_dma_len,
8471 p->scb_data->hscbs, p->scb_data->hscbs_dma);
8472 p->scb_data->hscbs = p->scb_data->hscb_kmalloc_ptr = NULL;
8475 * Free the driver SCBs. These were allocated on an as-need
8476 * basis. We allocated these in groups depending on how many
8477 * we could fit into a given amount of RAM. The tail SCB for
8478 * these allocations has a pointer to the alloced area.
8480 for (i = 0; i < p->scb_data->numscbs; i++)
8482 if (p->scb_data->scb_array[i]->scb_dma != scb_dma)
8484 scb_dma = p->scb_data->scb_array[i]->scb_dma;
8485 pci_free_consistent(p->pdev, scb_dma->dma_len,
8486 (void *)((unsigned long)scb_dma->dma_address
8487 - scb_dma->dma_offset),
8488 scb_dma->dma_address);
8490 kfree(p->scb_data->scb_array[i]->kmalloc_ptr);
8491 p->scb_data->scb_array[i] = NULL;
8495 * Free the SCB data area.
8500 pci_free_consistent(p->pdev, 3*256, (void *)p->untagged_scbs, p->fifo_dma);
8503 /*+F*************************************************************************
8505 * aic7xxx_load_seeprom
8508 * Load the seeprom and configure adapter and target settings.
8509 * Returns 1 if the load was successful and 0 otherwise.
8510 *-F*************************************************************************/
8512 aic7xxx_load_seeprom(struct aic7xxx_host *p, unsigned char *sxfrctl1)
8514 int have_seeprom = 0;
8515 int i, max_targets, mask;
8516 unsigned char scsirate, scsi_conf;
8517 unsigned short scarray[128];
8518 struct seeprom_config *sc = (struct seeprom_config *) scarray;
8520 if (aic7xxx_verbose & VERBOSE_PROBE2)
8522 printk(KERN_INFO "aic7xxx: Loading serial EEPROM...");
8526 case (AHC_AIC7770|AHC_EISA): /* None of these adapters have seeproms. */
8527 if (aic_inb(p, SCSICONF) & TERM_ENB)
8528 p->flags |= AHC_TERM_ENB_A;
8529 if ( (p->features & AHC_TWIN) && (aic_inb(p, SCSICONF + 1) & TERM_ENB) )
8530 p->flags |= AHC_TERM_ENB_B;
8533 case (AHC_AIC7770|AHC_VL):
8534 have_seeprom = read_284x_seeprom(p, (struct seeprom_config *) scarray);
8538 have_seeprom = read_seeprom(p, (p->flags & (AHC_CHNLB|AHC_CHNLC)),
8539 scarray, p->sc_size, p->sc_type);
8542 if(p->sc_type == C46)
8543 have_seeprom = read_seeprom(p, (p->flags & (AHC_CHNLB|AHC_CHNLC)),
8544 scarray, p->sc_size, C56_66);
8546 have_seeprom = read_seeprom(p, (p->flags & (AHC_CHNLB|AHC_CHNLC)),
8547 scarray, p->sc_size, C46);
8552 have_seeprom = read_seeprom(p, 4*(p->flags & (AHC_CHNLB|AHC_CHNLC)),
8553 scarray, p->sc_size, p->sc_type);
8556 if(p->sc_type == C46)
8557 have_seeprom = read_seeprom(p, 4*(p->flags & (AHC_CHNLB|AHC_CHNLC)),
8558 scarray, p->sc_size, C56_66);
8560 have_seeprom = read_seeprom(p, 4*(p->flags & (AHC_CHNLB|AHC_CHNLC)),
8561 scarray, p->sc_size, C46);
8569 if (aic7xxx_verbose & VERBOSE_PROBE2)
8571 printk("\naic7xxx: No SEEPROM available.\n");
8573 p->flags |= AHC_NEWEEPROM_FMT;
8574 if (aic_inb(p, SCSISEQ) == 0)
8576 p->flags |= AHC_USEDEFAULTS;
8577 p->flags &= ~AHC_BIOS_ENABLED;
8578 p->scsi_id = p->scsi_id_b = 7;
8579 *sxfrctl1 |= STPWEN;
8580 if (aic7xxx_verbose & VERBOSE_PROBE2)
8582 printk("aic7xxx: Using default values.\n");
8585 else if (aic7xxx_verbose & VERBOSE_PROBE2)
8587 printk("aic7xxx: Using leftover BIOS values.\n");
8589 if ( ((p->chip & ~AHC_CHIPID_MASK) == AHC_PCI) && (*sxfrctl1 & STPWEN) )
8591 p->flags |= AHC_TERM_ENB_SE_LOW | AHC_TERM_ENB_SE_HIGH;
8592 sc->adapter_control &= ~CFAUTOTERM;
8593 sc->adapter_control |= CFSTERM | CFWSTERM | CFLVDSTERM;
8595 if (aic7xxx_extended)
8596 p->flags |= (AHC_EXTEND_TRANS_A | AHC_EXTEND_TRANS_B);
8598 p->flags &= ~(AHC_EXTEND_TRANS_A | AHC_EXTEND_TRANS_B);
8602 if (aic7xxx_verbose & VERBOSE_PROBE2)
8608 * Note things in our flags
8610 p->flags |= AHC_SEEPROM_FOUND;
8613 * Update the settings in sxfrctl1 to match the termination settings.
8618 * Get our SCSI ID from the SEEPROM setting...
8620 p->scsi_id = (sc->brtime_id & CFSCSIID);
8623 * First process the settings that are different between the VLB
8624 * and PCI adapter seeproms.
8626 if ((p->chip & AHC_CHIPID_MASK) == AHC_AIC7770)
8628 /* VLB adapter seeproms */
8629 if (sc->bios_control & CF284XEXTEND)
8630 p->flags |= AHC_EXTEND_TRANS_A;
8632 if (sc->adapter_control & CF284XSTERM)
8634 *sxfrctl1 |= STPWEN;
8635 p->flags |= AHC_TERM_ENB_SE_LOW | AHC_TERM_ENB_SE_HIGH;
8640 /* PCI adapter seeproms */
8641 if (sc->bios_control & CFEXTEND)
8642 p->flags |= AHC_EXTEND_TRANS_A;
8643 if (sc->bios_control & CFBIOSEN)
8644 p->flags |= AHC_BIOS_ENABLED;
8646 p->flags &= ~AHC_BIOS_ENABLED;
8648 if (sc->adapter_control & CFSTERM)
8650 *sxfrctl1 |= STPWEN;
8651 p->flags |= AHC_TERM_ENB_SE_LOW | AHC_TERM_ENB_SE_HIGH;
8654 memcpy(&p->sc, sc, sizeof(struct seeprom_config));
8660 * Limit to 16 targets just in case. The 2842 for one is known to
8661 * blow the max_targets setting, future cards might also.
8663 max_targets = ((p->features & (AHC_TWIN | AHC_WIDE)) ? 16 : 8);
8667 for (i = 0; i < max_targets; i++)
8669 if( ((p->features & AHC_ULTRA) &&
8670 !(sc->adapter_control & CFULTRAEN) &&
8671 (sc->device_flags[i] & CFSYNCHISULTRA)) ||
8672 (sc->device_flags[i] & CFNEWULTRAFORMAT) )
8674 p->flags |= AHC_NEWEEPROM_FMT;
8680 for (i = 0; i < max_targets; i++)
8685 if (aic_inb(p, SCSISEQ) != 0)
8688 * OK...the BIOS set things up and left behind the settings we need.
8689 * Just make our sc->device_flags[i] entry match what the card has
8690 * set for this device.
8693 ~(aic_inb(p, DISC_DSB) | (aic_inb(p, DISC_DSB + 1) << 8) );
8695 (aic_inb(p, ULTRA_ENB) | (aic_inb(p, ULTRA_ENB + 1) << 8) );
8696 sc->device_flags[i] = (p->discenable & mask) ? CFDISC : 0;
8697 if (aic_inb(p, TARG_SCSIRATE + i) & WIDEXFER)
8698 sc->device_flags[i] |= CFWIDEB;
8699 if (p->features & AHC_ULTRA2)
8701 if (aic_inb(p, TARG_OFFSET + i))
8703 sc->device_flags[i] |= CFSYNCH;
8704 sc->device_flags[i] |= (aic_inb(p, TARG_SCSIRATE + i) & 0x07);
8705 if ( (aic_inb(p, TARG_SCSIRATE + i) & 0x18) == 0x18 )
8706 sc->device_flags[i] |= CFSYNCHISULTRA;
8711 if (aic_inb(p, TARG_SCSIRATE + i) & ~WIDEXFER)
8713 sc->device_flags[i] |= CFSYNCH;
8714 if (p->features & AHC_ULTRA)
8715 sc->device_flags[i] |= ((p->ultraenb & mask) ?
8716 CFSYNCHISULTRA : 0);
8723 * Assume the BIOS has NOT been run on this card and nothing between
8724 * the card and the devices is configured yet.
8726 sc->device_flags[i] = CFDISC;
8727 if (p->features & AHC_WIDE)
8728 sc->device_flags[i] |= CFWIDEB;
8729 if (p->features & AHC_ULTRA3)
8730 sc->device_flags[i] |= 2;
8731 else if (p->features & AHC_ULTRA2)
8732 sc->device_flags[i] |= 3;
8733 else if (p->features & AHC_ULTRA)
8734 sc->device_flags[i] |= CFSYNCHISULTRA;
8735 sc->device_flags[i] |= CFSYNCH;
8736 aic_outb(p, 0, TARG_SCSIRATE + i);
8737 if (p->features & AHC_ULTRA2)
8738 aic_outb(p, 0, TARG_OFFSET + i);
8741 if (sc->device_flags[i] & CFDISC)
8743 p->discenable |= mask;
8745 if (p->flags & AHC_NEWEEPROM_FMT)
8747 if ( !(p->features & AHC_ULTRA2) )
8750 * I know of two different Ultra BIOSes that do this differently.
8751 * One on the Gigabyte 6BXU mb that wants flags[i] & CFXFER to
8752 * be == to 0x03 and SYNCHISULTRA to be true to mean 40MByte/s
8753 * while on the IBM Netfinity 5000 they want the same thing
8754 * to be something else, while flags[i] & CFXFER == 0x03 and
8755 * SYNCHISULTRA false should be 40MByte/s. So, we set both to
8756 * 40MByte/s and the lower speeds be damned. People will have
8757 * to select around the conversely mapped lower speeds in order
8758 * to select lower speeds on these boards.
8760 if ( (sc->device_flags[i] & CFNEWULTRAFORMAT) &&
8761 ((sc->device_flags[i] & CFXFER) == 0x03) )
8763 sc->device_flags[i] &= ~CFXFER;
8764 sc->device_flags[i] |= CFSYNCHISULTRA;
8766 if (sc->device_flags[i] & CFSYNCHISULTRA)
8768 p->ultraenb |= mask;
8771 else if ( !(sc->device_flags[i] & CFNEWULTRAFORMAT) &&
8772 (p->features & AHC_ULTRA2) &&
8773 (sc->device_flags[i] & CFSYNCHISULTRA) )
8775 p->ultraenb |= mask;
8778 else if (sc->adapter_control & CFULTRAEN)
8780 p->ultraenb |= mask;
8782 if ( (sc->device_flags[i] & CFSYNCH) == 0)
8784 sc->device_flags[i] &= ~CFXFER;
8785 p->ultraenb &= ~mask;
8786 p->user[i].offset = 0;
8787 p->user[i].period = 0;
8788 p->user[i].options = 0;
8792 if (p->features & AHC_ULTRA3)
8794 p->user[i].offset = MAX_OFFSET_ULTRA2;
8795 if( (sc->device_flags[i] & CFXFER) < 0x03 )
8797 scsirate = (sc->device_flags[i] & CFXFER);
8798 p->user[i].options = MSG_EXT_PPR_OPTION_DT_CRC;
8802 scsirate = (sc->device_flags[i] & CFXFER) |
8803 ((p->ultraenb & mask) ? 0x18 : 0x10);
8804 p->user[i].options = 0;
8806 p->user[i].period = aic7xxx_find_period(p, scsirate,
8807 AHC_SYNCRATE_ULTRA3);
8809 else if (p->features & AHC_ULTRA2)
8811 p->user[i].offset = MAX_OFFSET_ULTRA2;
8812 scsirate = (sc->device_flags[i] & CFXFER) |
8813 ((p->ultraenb & mask) ? 0x18 : 0x10);
8814 p->user[i].options = 0;
8815 p->user[i].period = aic7xxx_find_period(p, scsirate,
8816 AHC_SYNCRATE_ULTRA2);
8820 scsirate = (sc->device_flags[i] & CFXFER) << 4;
8821 p->user[i].options = 0;
8822 p->user[i].offset = MAX_OFFSET_8BIT;
8823 if (p->features & AHC_ULTRA)
8826 ultraenb = aic_inb(p, ULTRA_ENB) |
8827 (aic_inb(p, ULTRA_ENB + 1) << 8);
8828 p->user[i].period = aic7xxx_find_period(p, scsirate,
8829 (p->ultraenb & mask) ?
8830 AHC_SYNCRATE_ULTRA :
8834 p->user[i].period = aic7xxx_find_period(p, scsirate,
8838 if ( (sc->device_flags[i] & CFWIDEB) && (p->features & AHC_WIDE) )
8840 p->user[i].width = MSG_EXT_WDTR_BUS_16_BIT;
8844 p->user[i].width = MSG_EXT_WDTR_BUS_8_BIT;
8847 aic_outb(p, ~(p->discenable & 0xFF), DISC_DSB);
8848 aic_outb(p, ~((p->discenable >> 8) & 0xFF), DISC_DSB + 1);
8851 * We set the p->ultraenb from the SEEPROM to begin with, but now we make
8852 * it match what is already down in the card. If we are doing a reset
8853 * on the card then this will get put back to a default state anyway.
8854 * This allows us to not have to pre-emptively negotiate when using the
8857 if (p->features & AHC_ULTRA)
8858 p->ultraenb = aic_inb(p, ULTRA_ENB) | (aic_inb(p, ULTRA_ENB + 1) << 8);
8861 scsi_conf = (p->scsi_id & HSCSIID);
8865 p->adapter_control = sc->adapter_control;
8866 p->bios_control = sc->bios_control;
8868 switch (p->chip & AHC_CHIPID_MASK)
8873 if (p->adapter_control & CFBPRIMARY)
8874 p->flags |= AHC_CHANNEL_B_PRIMARY;
8879 if (sc->adapter_control & CFSPARITY)
8880 scsi_conf |= ENSPCHK;
8884 scsi_conf |= ENSPCHK | RESET_SCSI;
8888 * Only set the SCSICONF and SCSICONF + 1 registers if we are a PCI card.
8889 * The 2842 and 2742 cards already have these registers set and we don't
8890 * want to muck with them since we don't set all the bits they do.
8892 if ( (p->chip & ~AHC_CHIPID_MASK) == AHC_PCI )
8894 /* Set the host ID */
8895 aic_outb(p, scsi_conf, SCSICONF);
8896 /* In case we are a wide card */
8897 aic_outb(p, p->scsi_id, SCSICONF + 1);
8901 /*+F*************************************************************************
8903 * aic7xxx_configure_bugs
8906 * Take the card passed in and set the appropriate bug flags based upon
8907 * the card model. Also make any changes needed to device registers or
8908 * PCI registers while we are here.
8909 *-F*************************************************************************/
8911 aic7xxx_configure_bugs(struct aic7xxx_host *p)
8913 unsigned short tmp_word;
8915 switch(p->chip & AHC_CHIPID_MASK)
8918 p->bugs |= AHC_BUG_PCI_2_1_RETRY;
8922 p->bugs |= AHC_BUG_TMODE_WIDEODD | AHC_BUG_CACHETHEN | AHC_BUG_PCI_MWI;
8925 p->bugs |= AHC_BUG_TMODE_WIDEODD | AHC_BUG_PCI_2_1_RETRY |
8926 AHC_BUG_CACHETHEN | AHC_BUG_PCI_MWI;
8929 p->bugs |= AHC_BUG_AUTOFLUSH | AHC_BUG_CACHETHEN;
8932 p->bugs |= AHC_BUG_SCBCHAN_UPLOAD;
8935 p->bugs |= AHC_BUG_TMODE_WIDEODD | AHC_BUG_PCI_2_1_RETRY |
8936 AHC_BUG_CACHETHEN | AHC_BUG_PCI_MWI;
8939 p->bugs |= AHC_BUG_CACHETHEN_DIS;
8942 p->bugs |= AHC_BUG_SCBCHAN_UPLOAD;
8950 * Now handle the bugs that require PCI register or card register tweaks
8952 pci_read_config_word(p->pdev, PCI_COMMAND, &tmp_word);
8953 if(p->bugs & AHC_BUG_PCI_MWI)
8955 tmp_word &= ~PCI_COMMAND_INVALIDATE;
8959 tmp_word |= PCI_COMMAND_INVALIDATE;
8961 pci_write_config_word(p->pdev, PCI_COMMAND, tmp_word);
8963 if(p->bugs & AHC_BUG_CACHETHEN)
8965 aic_outb(p, aic_inb(p, DSCOMMAND0) & ~CACHETHEN, DSCOMMAND0);
8967 else if (p->bugs & AHC_BUG_CACHETHEN_DIS)
8969 aic_outb(p, aic_inb(p, DSCOMMAND0) | CACHETHEN, DSCOMMAND0);
8976 /*+F*************************************************************************
8981 * Try to detect and register an Adaptec 7770 or 7870 SCSI controller.
8983 * XXX - This should really be called aic7xxx_probe(). A sequence of
8984 * probe(), attach()/detach(), and init() makes more sense than
8985 * one do-it-all function. This may be useful when (and if) the
8986 * mid-level SCSI code is overhauled.
8987 *-F*************************************************************************/
8989 aic7xxx_detect(struct scsi_host_template *template)
8991 struct aic7xxx_host *temp_p = NULL;
8992 struct aic7xxx_host *current_p = NULL;
8993 struct aic7xxx_host *list_p = NULL;
8995 #if defined(__i386__) || defined(__alpha__)
8996 ahc_flag_type flags = 0;
8999 unsigned char sxfrctl1;
9000 #if defined(__i386__) || defined(__alpha__)
9001 unsigned char hcntrl, hostconf;
9002 unsigned int slot, base;
9007 * If we are called as a module, the aic7xxx pointer may not be null
9008 * and it would point to our bootup string, just like on the lilo
9009 * command line. IF not NULL, then process this config string with
9013 aic7xxx_setup(aic7xxx);
9016 template->proc_name = "aic7xxx";
9017 template->sg_tablesize = AIC7XXX_MAX_SG;
9027 unsigned short vendor_id;
9028 unsigned short device_id;
9030 ahc_flag_type flags;
9031 ahc_feature features;
9032 int board_name_index;
9033 unsigned short seeprom_size;
9034 unsigned short seeprom_type;
9035 } const aic_pdevs[] = {
9036 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7810, AHC_NONE,
9037 AHC_FNONE, AHC_FENONE, 1,
9039 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7850, AHC_AIC7850,
9040 AHC_PAGESCBS, AHC_AIC7850_FE, 5,
9042 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7855, AHC_AIC7850,
9043 AHC_PAGESCBS, AHC_AIC7850_FE, 6,
9045 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7821, AHC_AIC7860,
9046 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9049 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_3860, AHC_AIC7860,
9050 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9053 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_38602, AHC_AIC7860,
9054 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9057 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_38602, AHC_AIC7860,
9058 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9061 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7860, AHC_AIC7860,
9062 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MOTHERBOARD,
9065 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7861, AHC_AIC7860,
9066 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9069 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7870, AHC_AIC7870,
9070 AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MOTHERBOARD,
9073 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7871, AHC_AIC7870,
9074 AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7870_FE, 10,
9076 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7872, AHC_AIC7870,
9077 AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
9080 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7873, AHC_AIC7870,
9081 AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
9084 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7874, AHC_AIC7870,
9085 AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7870_FE, 13,
9087 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7880, AHC_AIC7880,
9088 AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MOTHERBOARD,
9091 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7881, AHC_AIC7880,
9092 AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 15,
9094 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7882, AHC_AIC7880,
9095 AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
9098 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7883, AHC_AIC7880,
9099 AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
9102 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7884, AHC_AIC7880,
9103 AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 18,
9105 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7885, AHC_AIC7880,
9106 AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 18,
9108 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7886, AHC_AIC7880,
9109 AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 18,
9111 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7887, AHC_AIC7880,
9112 AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE | AHC_NEW_AUTOTERM, 19,
9114 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7888, AHC_AIC7880,
9115 AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 18,
9117 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7895, AHC_AIC7895,
9118 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
9121 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7890, AHC_AIC7890,
9122 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9125 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7890B, AHC_AIC7890,
9126 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9129 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_2930U2, AHC_AIC7890,
9130 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9133 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_2940U2, AHC_AIC7890,
9134 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9137 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7896, AHC_AIC7896,
9138 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
9141 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_3940U2, AHC_AIC7896,
9142 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
9145 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_3950U2D, AHC_AIC7896,
9146 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
9149 {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_1480A, AHC_AIC7860,
9150 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_NO_STPWEN,
9153 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7892A, AHC_AIC7892,
9154 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9157 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7892B, AHC_AIC7892,
9158 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9161 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7892D, AHC_AIC7892,
9162 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9165 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7892P, AHC_AIC7892,
9166 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
9169 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7899A, AHC_AIC7899,
9170 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
9173 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7899B, AHC_AIC7899,
9174 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
9177 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7899D, AHC_AIC7899,
9178 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
9181 {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7899P, AHC_AIC7899,
9182 AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
9187 unsigned short command;
9188 unsigned int devconfig, i, oldverbose;
9189 struct pci_dev *pdev = NULL;
9191 for (i = 0; i < ARRAY_SIZE(aic_pdevs); i++)
9194 while ((pdev = pci_get_device(aic_pdevs[i].vendor_id,
9195 aic_pdevs[i].device_id,
9197 if (pci_enable_device(pdev))
9199 if ( i == 0 ) /* We found one, but it's the 7810 RAID cont. */
9201 if (aic7xxx_verbose & (VERBOSE_PROBE|VERBOSE_PROBE2))
9203 printk(KERN_INFO "aic7xxx: The 7810 RAID controller is not "
9205 printk(KERN_INFO " this driver, we are ignoring it.\n");
9208 else if ( (temp_p = kmalloc(sizeof(struct aic7xxx_host),
9209 GFP_ATOMIC)) != NULL )
9211 memset(temp_p, 0, sizeof(struct aic7xxx_host));
9212 temp_p->chip = aic_pdevs[i].chip | AHC_PCI;
9213 temp_p->flags = aic_pdevs[i].flags;
9214 temp_p->features = aic_pdevs[i].features;
9215 temp_p->board_name_index = aic_pdevs[i].board_name_index;
9216 temp_p->sc_size = aic_pdevs[i].seeprom_size;
9217 temp_p->sc_type = aic_pdevs[i].seeprom_type;
9220 * Read sundry information from PCI BIOS.
9222 temp_p->irq = pdev->irq;
9223 temp_p->pdev = pdev;
9224 temp_p->pci_bus = pdev->bus->number;
9225 temp_p->pci_device_fn = pdev->devfn;
9226 temp_p->base = pci_resource_start(pdev, 0);
9227 temp_p->mbase = pci_resource_start(pdev, 1);
9229 while(current_p && temp_p)
9231 if ( ((current_p->pci_bus == temp_p->pci_bus) &&
9232 (current_p->pci_device_fn == temp_p->pci_device_fn)) ||
9233 (temp_p->base && (current_p->base == temp_p->base)) ||
9234 (temp_p->mbase && (current_p->mbase == temp_p->mbase)) )
9236 /* duplicate PCI entry, skip it */
9241 current_p = current_p->next;
9243 if(pci_request_regions(temp_p->pdev, "aic7xxx"))
9245 printk("aic7xxx: <%s> at PCI %d/%d/%d\n",
9246 board_names[aic_pdevs[i].board_name_index],
9248 PCI_SLOT(temp_p->pci_device_fn),
9249 PCI_FUNC(temp_p->pci_device_fn));
9250 printk("aic7xxx: I/O ports already in use, ignoring.\n");
9255 if (aic7xxx_verbose & VERBOSE_PROBE2)
9256 printk("aic7xxx: <%s> at PCI %d/%d\n",
9257 board_names[aic_pdevs[i].board_name_index],
9258 PCI_SLOT(pdev->devfn),
9259 PCI_FUNC(pdev->devfn));
9260 pci_read_config_word(pdev, PCI_COMMAND, &command);
9261 if (aic7xxx_verbose & VERBOSE_PROBE2)
9263 printk("aic7xxx: Initial PCI_COMMAND value was 0x%x\n",
9266 #ifdef AIC7XXX_STRICT_PCI_SETUP
9267 command |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY |
9268 PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO;
9270 command |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO;
9272 command &= ~PCI_COMMAND_INVALIDATE;
9273 if (aic7xxx_pci_parity == 0)
9274 command &= ~(PCI_COMMAND_SERR | PCI_COMMAND_PARITY);
9275 pci_write_config_word(pdev, PCI_COMMAND, command);
9276 #ifdef AIC7XXX_STRICT_PCI_SETUP
9277 pci_read_config_dword(pdev, DEVCONFIG, &devconfig);
9278 if (aic7xxx_verbose & VERBOSE_PROBE2)
9280 printk("aic7xxx: Initial DEVCONFIG value was 0x%x\n", devconfig);
9282 devconfig |= 0x80000040;
9283 pci_write_config_dword(pdev, DEVCONFIG, devconfig);
9284 #endif /* AIC7XXX_STRICT_PCI_SETUP */
9286 temp_p->unpause = INTEN;
9287 temp_p->pause = temp_p->unpause | PAUSE;
9288 if ( ((temp_p->base == 0) &&
9289 (temp_p->mbase == 0)) ||
9290 (temp_p->irq == 0) )
9292 printk("aic7xxx: <%s> at PCI %d/%d/%d\n",
9293 board_names[aic_pdevs[i].board_name_index],
9295 PCI_SLOT(temp_p->pci_device_fn),
9296 PCI_FUNC(temp_p->pci_device_fn));
9297 printk("aic7xxx: Controller disabled by BIOS, ignoring.\n");
9298 goto skip_pci_controller;
9302 if ( !(temp_p->base) || !(temp_p->flags & AHC_MULTI_CHANNEL) ||
9303 ((temp_p->chip != (AHC_AIC7870 | AHC_PCI)) &&
9304 (temp_p->chip != (AHC_AIC7880 | AHC_PCI))) )
9306 temp_p->maddr = ioremap_nocache(temp_p->mbase, 256);
9310 * We need to check the I/O with the MMAPed address. Some machines
9311 * simply fail to work with MMAPed I/O and certain controllers.
9313 if(aic_inb(temp_p, HCNTRL) == 0xff)
9316 * OK.....we failed our test....go back to programmed I/O
9318 printk(KERN_INFO "aic7xxx: <%s> at PCI %d/%d/%d\n",
9319 board_names[aic_pdevs[i].board_name_index],
9321 PCI_SLOT(temp_p->pci_device_fn),
9322 PCI_FUNC(temp_p->pci_device_fn));
9323 printk(KERN_INFO "aic7xxx: MMAPed I/O failed, reverting to "
9324 "Programmed I/O.\n");
9325 iounmap(temp_p->maddr);
9326 temp_p->maddr = NULL;
9327 if(temp_p->base == 0)
9329 printk("aic7xxx: <%s> at PCI %d/%d/%d\n",
9330 board_names[aic_pdevs[i].board_name_index],
9332 PCI_SLOT(temp_p->pci_device_fn),
9333 PCI_FUNC(temp_p->pci_device_fn));
9334 printk("aic7xxx: Controller disabled by BIOS, ignoring.\n");
9335 goto skip_pci_controller;
9343 * We HAVE to make sure the first pause_sequencer() and all other
9344 * subsequent I/O that isn't PCI config space I/O takes place
9345 * after the MMAPed I/O region is configured and tested. The
9346 * problem is the PowerPC architecture that doesn't support
9347 * programmed I/O at all, so we have to have the MMAP I/O set up
9348 * for this pause to even work on those machines.
9350 pause_sequencer(temp_p);
9353 * Clear out any pending PCI error status messages. Also set
9354 * verbose to 0 so that we don't emit strange PCI error messages
9355 * while cleaning out the current status bits.
9357 oldverbose = aic7xxx_verbose;
9358 aic7xxx_verbose = 0;
9359 aic7xxx_pci_intr(temp_p);
9360 aic7xxx_verbose = oldverbose;
9362 temp_p->bios_address = 0;
9365 * Remember how the card was setup in case there is no seeprom.
9367 if (temp_p->features & AHC_ULTRA2)
9368 temp_p->scsi_id = aic_inb(temp_p, SCSIID_ULTRA2) & OID;
9370 temp_p->scsi_id = aic_inb(temp_p, SCSIID) & OID;
9372 * Get current termination setting
9374 sxfrctl1 = aic_inb(temp_p, SXFRCTL1);
9376 if (aic7xxx_chip_reset(temp_p) == -1)
9378 goto skip_pci_controller;
9381 * Very quickly put the term setting back into the register since
9382 * the chip reset may cause odd things to happen. This is to keep
9383 * LVD busses with lots of drives from draining the power out of
9384 * the diffsense line before we get around to running the
9385 * configure_termination() function. Also restore the STPWLEVEL
9388 aic_outb(temp_p, sxfrctl1, SXFRCTL1);
9389 pci_write_config_dword(temp_p->pdev, DEVCONFIG, devconfig);
9393 * We need to set the CHNL? assignments before loading the SEEPROM
9394 * The 3940 and 3985 cards (original stuff, not any of the later
9395 * stuff) are 7870 and 7880 class chips. The Ultra2 stuff falls
9396 * under 7896 and 7897. The 7895 is in a class by itself :)
9398 switch (temp_p->chip & AHC_CHIPID_MASK)
9400 case AHC_AIC7870: /* 3840 / 3985 */
9401 case AHC_AIC7880: /* 3840 UW / 3985 UW */
9402 if(temp_p->flags & AHC_MULTI_CHANNEL)
9404 switch(PCI_SLOT(temp_p->pci_device_fn))
9407 temp_p->flags |= AHC_CHNLB;
9410 temp_p->flags |= AHC_CHNLB;
9413 temp_p->flags |= AHC_CHNLC;
9421 case AHC_AIC7895: /* 7895 */
9422 case AHC_AIC7896: /* 7896/7 */
9423 case AHC_AIC7899: /* 7899 */
9424 if (PCI_FUNC(pdev->devfn) != 0)
9426 temp_p->flags |= AHC_CHNLB;
9429 * The 7895 is the only chipset that sets the SCBSIZE32 param
9430 * in the DEVCONFIG register. The Ultra2 chipsets use
9431 * the DSCOMMAND0 register instead.
9433 if ((temp_p->chip & AHC_CHIPID_MASK) == AHC_AIC7895)
9435 pci_read_config_dword(pdev, DEVCONFIG, &devconfig);
9436 devconfig |= SCBSIZE32;
9437 pci_write_config_dword(pdev, DEVCONFIG, devconfig);
9445 * Loading of the SEEPROM needs to come after we've set the flags
9446 * to indicate possible CHNLB and CHNLC assigments. Otherwise,
9447 * on 394x and 398x cards we'll end up reading the wrong settings
9448 * for channels B and C
9450 switch (temp_p->chip & AHC_CHIPID_MASK)
9454 aic_outb(temp_p, 0, SCAMCTL);
9456 * Switch to the alt mode of the chip...
9458 aic_outb(temp_p, aic_inb(temp_p, SFUNCT) | ALT_MODE, SFUNCT);
9460 * Set our options...the last two items set our CRC after x byte
9461 * count in target mode...
9463 aic_outb(temp_p, AUTO_MSGOUT_DE | DIS_MSGIN_DUALEDGE, OPTIONMODE);
9464 aic_outb(temp_p, 0x00, 0x0b);
9465 aic_outb(temp_p, 0x10, 0x0a);
9467 * switch back to normal mode...
9469 aic_outb(temp_p, aic_inb(temp_p, SFUNCT) & ~ALT_MODE, SFUNCT);
9470 aic_outb(temp_p, CRCVALCHKEN | CRCENDCHKEN | CRCREQCHKEN |
9471 TARGCRCENDEN | TARGCRCCNTEN,
9473 aic_outb(temp_p, ((aic_inb(temp_p, DSCOMMAND0) | USCBSIZE32 |
9474 MPARCKEN | CIOPARCKEN | CACHETHEN) &
9475 ~DPARCKEN), DSCOMMAND0);
9476 aic7xxx_load_seeprom(temp_p, &sxfrctl1);
9480 aic_outb(temp_p, 0, SCAMCTL);
9481 aic_outb(temp_p, (aic_inb(temp_p, DSCOMMAND0) |
9482 CACHETHEN | MPARCKEN | USCBSIZE32 |
9483 CIOPARCKEN) & ~DPARCKEN, DSCOMMAND0);
9484 aic7xxx_load_seeprom(temp_p, &sxfrctl1);
9489 * Set the DSCOMMAND0 register on these cards different from
9490 * on the 789x cards. Also, read the SEEPROM as well.
9492 aic_outb(temp_p, (aic_inb(temp_p, DSCOMMAND0) |
9493 CACHETHEN | MPARCKEN) & ~DPARCKEN,
9497 aic7xxx_load_seeprom(temp_p, &sxfrctl1);
9501 * Check the rev of the chipset before we change DSCOMMAND0
9503 pci_read_config_dword(pdev, DEVCONFIG, &devconfig);
9504 if ((devconfig & 0xff) >= 1)
9506 aic_outb(temp_p, (aic_inb(temp_p, DSCOMMAND0) |
9507 CACHETHEN | MPARCKEN) & ~DPARCKEN,
9510 aic7xxx_load_seeprom(temp_p, &sxfrctl1);
9516 * and then we need another switch based on the type in order to
9517 * make sure the channel B primary flag is set properly on 7895
9518 * controllers....Arrrgggghhh!!! We also have to catch the fact
9519 * that when you disable the BIOS on the 7895 on the Intel DK440LX
9520 * motherboard, and possibly others, it only sets the BIOS disabled
9521 * bit on the A channel...I think I'm starting to lean towards
9524 switch(temp_p->chip & AHC_CHIPID_MASK)
9530 while(current_p != NULL)
9532 if ( (current_p->pci_bus == temp_p->pci_bus) &&
9533 (PCI_SLOT(current_p->pci_device_fn) ==
9534 PCI_SLOT(temp_p->pci_device_fn)) )
9536 if ( PCI_FUNC(current_p->pci_device_fn) == 0 )
9539 (current_p->flags & AHC_CHANNEL_B_PRIMARY);
9540 temp_p->flags &= ~(AHC_BIOS_ENABLED|AHC_USEDEFAULTS);
9542 (current_p->flags & (AHC_BIOS_ENABLED|AHC_USEDEFAULTS));
9547 (temp_p->flags & AHC_CHANNEL_B_PRIMARY);
9548 current_p->flags &= ~(AHC_BIOS_ENABLED|AHC_USEDEFAULTS);
9550 (temp_p->flags & (AHC_BIOS_ENABLED|AHC_USEDEFAULTS));
9553 current_p = current_p->next;
9561 * We only support external SCB RAM on the 7895/6/7 chipsets.
9562 * We could support it on the 7890/1 easy enough, but I don't
9563 * know of any 7890/1 based cards that have it. I do know
9564 * of 7895/6/7 cards that have it and they work properly.
9566 switch(temp_p->chip & AHC_CHIPID_MASK)
9573 pci_read_config_dword(pdev, DEVCONFIG, &devconfig);
9574 if (temp_p->features & AHC_ULTRA2)
9576 if ( (aic_inb(temp_p, DSCOMMAND0) & RAMPSM_ULTRA2) &&
9580 aic_inb(temp_p, DSCOMMAND0) & ~SCBRAMSEL_ULTRA2,
9582 temp_p->flags |= AHC_EXTERNAL_SRAM;
9583 devconfig |= EXTSCBPEN;
9585 else if (aic_inb(temp_p, DSCOMMAND0) & RAMPSM_ULTRA2)
9587 printk(KERN_INFO "aic7xxx: <%s> at PCI %d/%d/%d\n",
9588 board_names[aic_pdevs[i].board_name_index],
9590 PCI_SLOT(temp_p->pci_device_fn),
9591 PCI_FUNC(temp_p->pci_device_fn));
9592 printk("aic7xxx: external SCB RAM detected, "
9593 "but not enabled\n");
9598 if ((devconfig & RAMPSM) && (aic7xxx_scbram))
9600 devconfig &= ~SCBRAMSEL;
9601 devconfig |= EXTSCBPEN;
9602 temp_p->flags |= AHC_EXTERNAL_SRAM;
9604 else if (devconfig & RAMPSM)
9606 printk(KERN_INFO "aic7xxx: <%s> at PCI %d/%d/%d\n",
9607 board_names[aic_pdevs[i].board_name_index],
9609 PCI_SLOT(temp_p->pci_device_fn),
9610 PCI_FUNC(temp_p->pci_device_fn));
9611 printk("aic7xxx: external SCB RAM detected, "
9612 "but not enabled\n");
9615 pci_write_config_dword(pdev, DEVCONFIG, devconfig);
9616 if ( (temp_p->flags & AHC_EXTERNAL_SRAM) &&
9617 (temp_p->flags & AHC_CHNLB) )
9618 aic_outb(temp_p, 1, CCSCBBADDR);
9623 * Take the LED out of diagnostic mode
9626 (aic_inb(temp_p, SBLKCTL) & ~(DIAGLEDEN | DIAGLEDON)),
9630 * We don't know where this is set in the SEEPROM or by the
9631 * BIOS, so we default to 100%. On Ultra2 controllers, use 75%
9634 if (temp_p->features & AHC_ULTRA2)
9636 aic_outb(temp_p, RD_DFTHRSH_MAX | WR_DFTHRSH_MAX, DFF_THRSH);
9640 aic_outb(temp_p, DFTHRSH_100, DSPCISTATUS);
9644 * Call our function to fixup any bugs that exist on this chipset.
9645 * This may muck with PCI settings and other device settings, so
9646 * make sure it's after all the other PCI and device register
9647 * tweaks so it can back out bad settings on specific broken cards.
9649 aic7xxx_configure_bugs(temp_p);
9651 /* Hold a pci device reference */
9652 pci_dev_get(temp_p->pdev);
9654 if ( list_p == NULL )
9656 list_p = current_p = temp_p;
9661 while(current_p->next != NULL)
9662 current_p = current_p->next;
9663 current_p->next = temp_p;
9665 temp_p->next = NULL;
9668 skip_pci_controller:
9670 pci_release_regions(temp_p->pdev);
9673 } /* Found an Adaptec PCI device. */
9674 else /* Well, we found one, but we couldn't get any memory */
9676 printk("aic7xxx: Found <%s>\n",
9677 board_names[aic_pdevs[i].board_name_index]);
9678 printk(KERN_INFO "aic7xxx: Unable to allocate device memory, "
9681 } /* while(pdev=....) */
9682 } /* for PCI_DEVICES */
9684 #endif /* CONFIG_PCI */
9686 #if defined(__i386__) || defined(__alpha__)
9688 * EISA/VL-bus card signature probe.
9691 while ( (slot <= MAXSLOT) &&
9692 !(aic7xxx_no_probe) )
9694 base = SLOTBASE(slot) + MINREG;
9696 if (!request_region(base, MAXREG - MINREG, "aic7xxx"))
9699 * Some other driver has staked a
9700 * claim to this i/o region already.
9703 continue; /* back to the beginning of the for loop */
9706 type = aic7xxx_probe(slot, base + AHC_HID0, &flags);
9709 release_region(base, MAXREG - MINREG);
9713 temp_p = kmalloc(sizeof(struct aic7xxx_host), GFP_ATOMIC);
9716 printk(KERN_WARNING "aic7xxx: Unable to allocate device space.\n");
9717 release_region(base, MAXREG - MINREG);
9719 continue; /* back to the beginning of the while loop */
9723 * Pause the card preserving the IRQ type. Allow the operator
9724 * to override the IRQ trigger.
9726 if (aic7xxx_irq_trigger == 1)
9727 hcntrl = IRQMS; /* Level */
9728 else if (aic7xxx_irq_trigger == 0)
9729 hcntrl = 0; /* Edge */
9731 hcntrl = inb(base + HCNTRL) & IRQMS; /* Default */
9732 memset(temp_p, 0, sizeof(struct aic7xxx_host));
9733 temp_p->unpause = hcntrl | INTEN;
9734 temp_p->pause = hcntrl | PAUSE | INTEN;
9735 temp_p->base = base;
9737 temp_p->maddr = NULL;
9738 temp_p->pci_bus = 0;
9739 temp_p->pci_device_fn = slot;
9740 aic_outb(temp_p, hcntrl | PAUSE, HCNTRL);
9741 while( (aic_inb(temp_p, HCNTRL) & PAUSE) == 0 ) ;
9742 if (aic7xxx_chip_reset(temp_p) == -1)
9745 temp_p->irq = aic_inb(temp_p, INTDEF) & 0x0F;
9746 temp_p->flags |= AHC_PAGESCBS;
9748 switch (temp_p->irq)
9759 printk(KERN_WARNING "aic7xxx: Host adapter uses unsupported IRQ "
9760 "level %d, ignoring.\n", temp_p->irq);
9762 release_region(base, MAXREG - MINREG);
9764 continue; /* back to the beginning of the while loop */
9768 * We are commited now, everything has been checked and this card
9769 * has been found, now we just set it up
9773 * Insert our new struct into the list at the end
9777 list_p = current_p = temp_p;
9782 while (current_p->next != NULL)
9783 current_p = current_p->next;
9784 current_p->next = temp_p;
9790 temp_p->board_name_index = 2;
9791 if (aic7xxx_verbose & VERBOSE_PROBE2)
9792 printk("aic7xxx: <%s> at EISA %d\n",
9793 board_names[2], slot);
9797 temp_p->chip = AHC_AIC7770 | AHC_EISA;
9798 temp_p->features |= AHC_AIC7770_FE;
9799 temp_p->bios_control = aic_inb(temp_p, HA_274_BIOSCTRL);
9802 * Get the primary channel information. Right now we don't
9803 * do anything with this, but someday we will be able to inform
9804 * the mid-level SCSI code which channel is primary.
9806 if (temp_p->board_name_index == 0)
9808 temp_p->board_name_index = 3;
9809 if (aic7xxx_verbose & VERBOSE_PROBE2)
9810 printk("aic7xxx: <%s> at EISA %d\n",
9811 board_names[3], slot);
9813 if (temp_p->bios_control & CHANNEL_B_PRIMARY)
9815 temp_p->flags |= AHC_CHANNEL_B_PRIMARY;
9818 if ((temp_p->bios_control & BIOSMODE) == BIOSDISABLED)
9820 temp_p->flags &= ~AHC_BIOS_ENABLED;
9824 temp_p->flags &= ~AHC_USEDEFAULTS;
9825 temp_p->flags |= AHC_BIOS_ENABLED;
9826 if ( (temp_p->bios_control & 0x20) == 0 )
9828 temp_p->bios_address = 0xcc000;
9829 temp_p->bios_address += (0x4000 * (temp_p->bios_control & 0x07));
9833 temp_p->bios_address = 0xd0000;
9834 temp_p->bios_address += (0x8000 * (temp_p->bios_control & 0x06));
9837 temp_p->adapter_control = aic_inb(temp_p, SCSICONF) << 8;
9838 temp_p->adapter_control |= aic_inb(temp_p, SCSICONF + 1);
9839 if (temp_p->features & AHC_WIDE)
9841 temp_p->scsi_id = temp_p->adapter_control & HWSCSIID;
9842 temp_p->scsi_id_b = temp_p->scsi_id;
9846 temp_p->scsi_id = (temp_p->adapter_control >> 8) & HSCSIID;
9847 temp_p->scsi_id_b = temp_p->adapter_control & HSCSIID;
9849 aic7xxx_load_seeprom(temp_p, &sxfrctl1);
9855 temp_p->chip = AHC_AIC7770 | AHC_VL;
9856 temp_p->features |= AHC_AIC7770_FE;
9858 temp_p->flags |= AHC_BIOS_ENABLED;
9860 temp_p->flags &= ~AHC_BIOS_ENABLED;
9861 if (aic_inb(temp_p, SCSICONF) & TERM_ENB)
9863 aic7xxx_load_seeprom(temp_p, &sxfrctl1);
9864 temp_p->board_name_index = 4;
9865 if (aic7xxx_verbose & VERBOSE_PROBE2)
9866 printk("aic7xxx: <%s> at VLB %d\n",
9867 board_names[2], slot);
9868 switch( aic_inb(temp_p, STATUS_2840) & BIOS_SEL )
9871 temp_p->bios_address = 0xe0000;
9874 temp_p->bios_address = 0xc8000;
9877 temp_p->bios_address = 0xd0000;
9880 temp_p->bios_address = 0xd8000;
9883 break; /* can't get here */
9887 default: /* Won't get here. */
9890 if (aic7xxx_verbose & VERBOSE_PROBE2)
9892 printk(KERN_INFO "aic7xxx: BIOS %sabled, IO Port 0x%lx, IRQ %d (%s)\n",
9893 (temp_p->flags & AHC_USEDEFAULTS) ? "dis" : "en", temp_p->base,
9895 (temp_p->pause & IRQMS) ? "level sensitive" : "edge triggered");
9896 printk(KERN_INFO "aic7xxx: Extended translation %sabled.\n",
9897 (temp_p->flags & AHC_EXTEND_TRANS_A) ? "en" : "dis");
9901 * All the 7770 based chipsets have this bug
9903 temp_p->bugs |= AHC_BUG_TMODE_WIDEODD;
9906 * Set the FIFO threshold and the bus off time.
9908 hostconf = aic_inb(temp_p, HOSTCONF);
9909 aic_outb(temp_p, hostconf & DFTHRSH, BUSSPD);
9910 aic_outb(temp_p, (hostconf << 2) & BOFF, BUSTIME);
9915 #endif /* defined(__i386__) || defined(__alpha__) */
9918 * Now, we re-order the probed devices by BIOS address and BUS class.
9919 * In general, we follow this algorithm to make the adapters show up
9920 * in the same order under linux that the computer finds them.
9921 * 1: All VLB/EISA cards with BIOS_ENABLED first, according to BIOS
9922 * address, going from lowest to highest.
9923 * 2: All PCI controllers with BIOS_ENABLED next, according to BIOS
9924 * address, going from lowest to highest.
9925 * 3: Remaining VLB/EISA controllers going in slot order.
9926 * 4: Remaining PCI controllers, going in PCI device order (reversable)
9930 struct aic7xxx_host *sort_list[4] = { NULL, NULL, NULL, NULL };
9931 struct aic7xxx_host *vlb, *pci;
9932 struct aic7xxx_host *prev_p;
9933 struct aic7xxx_host *p;
9936 prev_p = vlb = pci = NULL;
9939 while (temp_p != NULL)
9941 switch(temp_p->chip & ~AHC_CHIPID_MASK)
9947 if (p->flags & AHC_BIOS_ENABLED)
9955 temp_p = temp_p->next;
9962 while ( (current_p != NULL) &&
9963 (current_p->bios_address < temp_p->bios_address))
9966 current_p = current_p->next;
9970 prev_p->next = temp_p;
9971 temp_p = temp_p->next;
9972 prev_p->next->next = current_p;
9977 temp_p = temp_p->next;
9978 vlb->next = current_p;
9982 if (p->flags & AHC_BIOS_ENABLED)
9989 default: /* All PCI controllers fall through to default */
9993 if (p->flags & AHC_BIOS_ENABLED)
10001 temp_p = temp_p->next;
10008 if (!aic7xxx_reverse_scan)
10010 while ( (current_p != NULL) &&
10011 ( (PCI_SLOT(current_p->pci_device_fn) |
10012 (current_p->pci_bus << 8)) <
10013 (PCI_SLOT(temp_p->pci_device_fn) |
10014 (temp_p->pci_bus << 8)) ) )
10016 prev_p = current_p;
10017 current_p = current_p->next;
10022 while ( (current_p != NULL) &&
10023 ( (PCI_SLOT(current_p->pci_device_fn) |
10024 (current_p->pci_bus << 8)) >
10025 (PCI_SLOT(temp_p->pci_device_fn) |
10026 (temp_p->pci_bus << 8)) ) )
10028 prev_p = current_p;
10029 current_p = current_p->next;
10033 * Are we dealing with a 7895/6/7/9 where we need to sort the
10034 * channels as well, if so, the bios_address values should
10037 if ( (current_p) && (temp_p->flags & AHC_MULTI_CHANNEL) &&
10038 (temp_p->pci_bus == current_p->pci_bus) &&
10039 (PCI_SLOT(temp_p->pci_device_fn) ==
10040 PCI_SLOT(current_p->pci_device_fn)) )
10042 if (temp_p->flags & AHC_CHNLB)
10044 if ( !(temp_p->flags & AHC_CHANNEL_B_PRIMARY) )
10046 prev_p = current_p;
10047 current_p = current_p->next;
10052 if (temp_p->flags & AHC_CHANNEL_B_PRIMARY)
10054 prev_p = current_p;
10055 current_p = current_p->next;
10059 if (prev_p != NULL)
10061 prev_p->next = temp_p;
10062 temp_p = temp_p->next;
10063 prev_p->next->next = current_p;
10068 temp_p = temp_p->next;
10069 pci->next = current_p;
10073 if (p->flags & AHC_BIOS_ENABLED)
10074 sort_list[1] = pci;
10076 sort_list[3] = pci;
10080 } /* End of switch(temp_p->type) */
10081 } /* End of while (temp_p != NULL) */
10083 * At this point, the cards have been broken into 4 sorted lists, now
10084 * we run through the lists in order and register each controller
10090 for (i=0; i<ARRAY_SIZE(sort_list); i++)
10092 temp_p = sort_list[i];
10093 while(temp_p != NULL)
10095 template->name = board_names[temp_p->board_name_index];
10096 p = aic7xxx_alloc(template, temp_p);
10099 p->instance = found - left;
10100 if (aic7xxx_register(template, p, (--left)) == 0)
10103 aic7xxx_release(p->host);
10104 scsi_unregister(p->host);
10106 else if (aic7xxx_dump_card)
10108 pause_sequencer(p);
10109 aic7xxx_print_card(p);
10110 aic7xxx_print_scratch_ram(p);
10111 unpause_sequencer(p, TRUE);
10114 current_p = temp_p;
10115 temp_p = (struct aic7xxx_host *)temp_p->next;
10124 /*+F*************************************************************************
10130 *-F*************************************************************************/
10131 static void aic7xxx_buildscb(struct aic7xxx_host *p, struct scsi_cmnd *cmd,
10132 struct aic7xxx_scb *scb)
10134 unsigned short mask;
10135 struct aic7xxx_hwscb *hscb;
10136 struct aic_dev_data *aic_dev = cmd->device->hostdata;
10137 struct scsi_device *sdptr = cmd->device;
10138 unsigned char tindex = TARGET_INDEX(cmd);
10139 struct request *req = cmd->request;
10141 mask = (0x01 << tindex);
10145 * Setup the control byte if we need negotiation and have not
10146 * already requested it.
10149 scb->tag_action = 0;
10151 if (p->discenable & mask)
10153 hscb->control |= DISCENB;
10154 /* We always force TEST_UNIT_READY to untagged */
10155 if (cmd->cmnd[0] != TEST_UNIT_READY && sdptr->simple_tags)
10157 if (req->cmd_flags & REQ_HARDBARRIER)
10159 if(sdptr->ordered_tags)
10161 hscb->control |= MSG_ORDERED_Q_TAG;
10162 scb->tag_action = MSG_ORDERED_Q_TAG;
10167 hscb->control |= MSG_SIMPLE_Q_TAG;
10168 scb->tag_action = MSG_SIMPLE_Q_TAG;
10172 if ( !(aic_dev->dtr_pending) &&
10173 (aic_dev->needppr || aic_dev->needwdtr || aic_dev->needsdtr) &&
10174 (aic_dev->flags & DEVICE_DTR_SCANNED) )
10176 aic_dev->dtr_pending = 1;
10177 scb->tag_action = 0;
10178 hscb->control &= DISCENB;
10179 hscb->control |= MK_MESSAGE;
10180 if(aic_dev->needppr)
10182 scb->flags |= SCB_MSGOUT_PPR;
10184 else if(aic_dev->needwdtr)
10186 scb->flags |= SCB_MSGOUT_WDTR;
10188 else if(aic_dev->needsdtr)
10190 scb->flags |= SCB_MSGOUT_SDTR;
10192 scb->flags |= SCB_DTR_SCB;
10194 hscb->target_channel_lun = ((cmd->device->id << 4) & 0xF0) |
10195 ((cmd->device->channel & 0x01) << 3) | (cmd->device->lun & 0x07);
10198 * The interpretation of request_buffer and request_bufflen
10199 * changes depending on whether or not use_sg is zero; a
10200 * non-zero use_sg indicates the number of elements in the
10201 * scatter-gather array.
10205 * XXX - this relies on the host data being stored in a
10206 * little-endian format.
10208 hscb->SCSI_cmd_length = cmd->cmd_len;
10209 memcpy(scb->cmnd, cmd->cmnd, cmd->cmd_len);
10210 hscb->SCSI_cmd_pointer = cpu_to_le32(SCB_DMA_ADDR(scb, scb->cmnd));
10214 struct scatterlist *sg; /* Must be mid-level SCSI code scatterlist */
10217 * We must build an SG list in adapter format, as the kernel's SG list
10218 * cannot be used directly because of data field size (__alpha__)
10219 * differences and the kernel SG list uses virtual addresses where
10220 * we need physical addresses.
10224 sg = (struct scatterlist *)cmd->request_buffer;
10225 scb->sg_length = 0;
10226 use_sg = pci_map_sg(p->pdev, sg, cmd->use_sg, cmd->sc_data_direction);
10228 * Copy the segments into the SG array. NOTE!!! - We used to
10229 * have the first entry both in the data_pointer area and the first
10230 * SG element. That has changed somewhat. We still have the first
10231 * entry in both places, but now we download the address of
10232 * scb->sg_list[1] instead of 0 to the sg pointer in the hscb.
10234 for (i = 0; i < use_sg; i++)
10236 unsigned int len = sg_dma_len(sg+i);
10237 scb->sg_list[i].address = cpu_to_le32(sg_dma_address(sg+i));
10238 scb->sg_list[i].length = cpu_to_le32(len);
10239 scb->sg_length += len;
10241 /* Copy the first SG into the data pointer area. */
10242 hscb->data_pointer = scb->sg_list[0].address;
10243 hscb->data_count = scb->sg_list[0].length;
10245 hscb->SG_segment_count = i;
10246 hscb->SG_list_pointer = cpu_to_le32(SCB_DMA_ADDR(scb, &scb->sg_list[1]));
10250 if (cmd->request_bufflen)
10252 unsigned int address = pci_map_single(p->pdev, cmd->request_buffer,
10253 cmd->request_bufflen,
10254 cmd->sc_data_direction);
10255 aic7xxx_mapping(cmd) = address;
10256 scb->sg_list[0].address = cpu_to_le32(address);
10257 scb->sg_list[0].length = cpu_to_le32(cmd->request_bufflen);
10259 scb->sg_length = cmd->request_bufflen;
10260 hscb->SG_segment_count = 1;
10261 hscb->SG_list_pointer = cpu_to_le32(SCB_DMA_ADDR(scb, &scb->sg_list[0]));
10262 hscb->data_count = scb->sg_list[0].length;
10263 hscb->data_pointer = scb->sg_list[0].address;
10268 scb->sg_length = 0;
10269 hscb->SG_segment_count = 0;
10270 hscb->SG_list_pointer = 0;
10271 hscb->data_count = 0;
10272 hscb->data_pointer = 0;
10277 /*+F*************************************************************************
10282 * Queue a SCB to the controller.
10283 *-F*************************************************************************/
10284 static int aic7xxx_queue(struct scsi_cmnd *cmd, void (*fn)(struct scsi_cmnd *))
10286 struct aic7xxx_host *p;
10287 struct aic7xxx_scb *scb;
10288 struct aic_dev_data *aic_dev;
10290 p = (struct aic7xxx_host *) cmd->device->host->hostdata;
10292 aic_dev = cmd->device->hostdata;
10293 #ifdef AIC7XXX_VERBOSE_DEBUGGING
10294 if (aic_dev->active_cmds > aic_dev->max_q_depth)
10296 printk(WARN_LEAD "Commands queued exceeds queue "
10297 "depth, active=%d\n",
10298 p->host_no, CTL_OF_CMD(cmd),
10299 aic_dev->active_cmds);
10303 scb = scbq_remove_head(&p->scb_data->free_scbs);
10306 aic7xxx_allocate_scb(p);
10307 scb = scbq_remove_head(&p->scb_data->free_scbs);
10310 printk(WARN_LEAD "Couldn't get a free SCB.\n", p->host_no,
10318 * Make sure the scsi_cmnd pointer is saved, the struct it points to
10319 * is set up properly, and the parity error flag is reset, then send
10320 * the SCB to the sequencer and watch the fun begin.
10322 aic7xxx_position(cmd) = scb->hscb->tag;
10323 cmd->scsi_done = fn;
10324 cmd->result = DID_OK;
10325 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
10326 aic7xxx_error(cmd) = DID_OK;
10327 aic7xxx_status(cmd) = 0;
10328 cmd->host_scribble = NULL;
10331 * Construct the SCB beforehand, so the sequencer is
10332 * paused a minimal amount of time.
10334 aic7xxx_buildscb(p, cmd, scb);
10336 scb->flags |= SCB_ACTIVE | SCB_WAITINGQ;
10338 scbq_insert_tail(&p->waiting_scbs, scb);
10339 aic7xxx_run_waiting_queues(p);
10343 /*+F*************************************************************************
10345 * aic7xxx_bus_device_reset
10348 * Abort or reset the current SCSI command(s). If the scb has not
10349 * previously been aborted, then we attempt to send a BUS_DEVICE_RESET
10350 * message to the target. If the scb has previously been unsuccessfully
10351 * aborted, then we will reset the channel and have all devices renegotiate.
10352 * Returns an enumerated type that indicates the status of the operation.
10353 *-F*************************************************************************/
10354 static int __aic7xxx_bus_device_reset(struct scsi_cmnd *cmd)
10356 struct aic7xxx_host *p;
10357 struct aic7xxx_scb *scb;
10358 struct aic7xxx_hwscb *hscb;
10360 unsigned char saved_scbptr, lastphase;
10361 unsigned char hscb_index;
10363 struct aic_dev_data *aic_dev;
10367 printk(KERN_ERR "aic7xxx_bus_device_reset: called with NULL cmd!\n");
10370 p = (struct aic7xxx_host *)cmd->device->host->hostdata;
10371 aic_dev = AIC_DEV(cmd);
10372 if(aic7xxx_position(cmd) < p->scb_data->numscbs)
10373 scb = (p->scb_data->scb_array[aic7xxx_position(cmd)]);
10380 aic7xxx_done_cmds_complete(p);
10381 /* If the command was already complete or just completed, then we didn't
10382 * do a reset, return FAILED */
10383 if(!(scb->flags & SCB_ACTIVE))
10386 pause_sequencer(p);
10387 lastphase = aic_inb(p, LASTPHASE);
10388 if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
10390 printk(INFO_LEAD "Bus Device reset, scb flags 0x%x, ",
10391 p->host_no, CTL_OF_SCB(scb), scb->flags);
10395 printk("Data-Out phase\n");
10398 printk("Data-In phase\n");
10401 printk("Command phase\n");
10404 printk("Message-Out phase\n");
10407 printk("Status phase\n");
10410 printk("Message-In phase\n");
10414 * We're not in a valid phase, so assume we're idle.
10416 printk("while idle, LASTPHASE = 0x%x\n", lastphase);
10419 printk(INFO_LEAD "SCSISIGI 0x%x, SEQADDR 0x%x, SSTAT0 0x%x, SSTAT1 "
10420 "0x%x\n", p->host_no, CTL_OF_SCB(scb),
10421 aic_inb(p, SCSISIGI),
10422 aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8),
10423 aic_inb(p, SSTAT0), aic_inb(p, SSTAT1));
10424 printk(INFO_LEAD "SG_CACHEPTR 0x%x, SSTAT2 0x%x, STCNT 0x%x\n", p->host_no,
10426 (p->features & AHC_ULTRA2) ? aic_inb(p, SG_CACHEPTR) : 0,
10427 aic_inb(p, SSTAT2),
10428 aic_inb(p, STCNT + 2) << 16 | aic_inb(p, STCNT + 1) << 8 |
10429 aic_inb(p, STCNT));
10432 channel = cmd->device->channel;
10435 * Send a Device Reset Message:
10436 * The target that is holding up the bus may not be the same as
10437 * the one that triggered this timeout (different commands have
10438 * different timeout lengths). Our strategy here is to queue an
10439 * abort message to the timed out target if it is disconnected.
10440 * Otherwise, if we have an active target we stuff the message buffer
10441 * with an abort message and assert ATN in the hopes that the target
10442 * will let go of the bus and go to the mesgout phase. If this
10443 * fails, we'll get another timeout a few seconds later which will
10444 * attempt a bus reset.
10446 saved_scbptr = aic_inb(p, SCBPTR);
10447 disconnected = FALSE;
10449 if (lastphase != P_BUSFREE)
10451 if (aic_inb(p, SCB_TAG) >= p->scb_data->numscbs)
10453 printk(WARN_LEAD "Invalid SCB ID %d is active, "
10454 "SCB flags = 0x%x.\n", p->host_no,
10455 CTL_OF_CMD(cmd), scb->hscb->tag, scb->flags);
10456 unpause_sequencer(p, FALSE);
10459 if (scb->hscb->tag == aic_inb(p, SCB_TAG))
10461 if ( (lastphase == P_MESGOUT) || (lastphase == P_MESGIN) )
10463 printk(WARN_LEAD "Device reset, Message buffer "
10464 "in use\n", p->host_no, CTL_OF_SCB(scb));
10465 unpause_sequencer(p, FALSE);
10469 if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
10470 printk(INFO_LEAD "Device reset message in "
10471 "message buffer\n", p->host_no, CTL_OF_SCB(scb));
10472 scb->flags |= SCB_RESET | SCB_DEVICE_RESET;
10473 aic7xxx_error(cmd) = DID_RESET;
10474 aic_dev->flags |= BUS_DEVICE_RESET_PENDING;
10475 /* Send the abort message to the active SCB. */
10476 aic_outb(p, HOST_MSG, MSG_OUT);
10477 aic_outb(p, lastphase | ATNO, SCSISIGO);
10478 unpause_sequencer(p, FALSE);
10479 spin_unlock_irq(p->host->host_lock);
10481 spin_lock_irq(p->host->host_lock);
10482 if(aic_dev->flags & BUS_DEVICE_RESET_PENDING)
10487 } /* if (last_phase != P_BUSFREE).....indicates we are idle and can work */
10489 * Simply set the MK_MESSAGE flag and the SEQINT handler will do
10490 * the rest on a reconnect/connect.
10492 scb->hscb->control |= MK_MESSAGE;
10493 scb->flags |= SCB_RESET | SCB_DEVICE_RESET;
10494 aic_dev->flags |= BUS_DEVICE_RESET_PENDING;
10496 * Check to see if the command is on the qinfifo. If it is, then we will
10497 * not need to queue the command again since the card should start it soon
10499 if (aic7xxx_search_qinfifo(p, cmd->device->channel, cmd->device->id, cmd->device->lun, hscb->tag,
10500 0, TRUE, NULL) == 0)
10502 disconnected = TRUE;
10503 if ((hscb_index = aic7xxx_find_scb(p, scb)) != SCB_LIST_NULL)
10505 unsigned char scb_control;
10507 aic_outb(p, hscb_index, SCBPTR);
10508 scb_control = aic_inb(p, SCB_CONTROL);
10510 * If the DISCONNECTED bit is not set in SCB_CONTROL, then we are
10511 * actually on the waiting list, not disconnected, and we don't
10512 * need to requeue the command.
10514 disconnected = (scb_control & DISCONNECTED);
10515 aic_outb(p, scb_control | MK_MESSAGE, SCB_CONTROL);
10520 * Actually requeue this SCB in case we can select the
10521 * device before it reconnects. This can result in the command
10522 * being on the qinfifo twice, but we don't care because it will
10523 * all get cleaned up if/when the reset takes place.
10525 if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
10526 printk(INFO_LEAD "Queueing device reset command.\n", p->host_no,
10528 p->qinfifo[p->qinfifonext++] = scb->hscb->tag;
10529 if (p->features & AHC_QUEUE_REGS)
10530 aic_outb(p, p->qinfifonext, HNSCB_QOFF);
10532 aic_outb(p, p->qinfifonext, KERNEL_QINPOS);
10533 scb->flags |= SCB_QUEUED_ABORT;
10536 aic_outb(p, saved_scbptr, SCBPTR);
10537 unpause_sequencer(p, FALSE);
10538 spin_unlock_irq(p->host->host_lock);
10540 spin_lock_irq(p->host->host_lock);
10541 if(aic_dev->flags & BUS_DEVICE_RESET_PENDING)
10547 static int aic7xxx_bus_device_reset(struct scsi_cmnd *cmd)
10551 spin_lock_irq(cmd->device->host->host_lock);
10552 rc = __aic7xxx_bus_device_reset(cmd);
10553 spin_unlock_irq(cmd->device->host->host_lock);
10559 /*+F*************************************************************************
10561 * aic7xxx_panic_abort
10564 * Abort the current SCSI command(s).
10565 *-F*************************************************************************/
10566 static void aic7xxx_panic_abort(struct aic7xxx_host *p, struct scsi_cmnd *cmd)
10569 printk("aic7xxx driver version %s\n", AIC7XXX_C_VERSION);
10570 printk("Controller type:\n %s\n", board_names[p->board_name_index]);
10571 printk("p->flags=0x%lx, p->chip=0x%x, p->features=0x%x, "
10572 "sequencer %s paused\n",
10573 p->flags, p->chip, p->features,
10574 (aic_inb(p, HCNTRL) & PAUSE) ? "is" : "isn't" );
10575 pause_sequencer(p);
10576 disable_irq(p->irq);
10577 aic7xxx_print_card(p);
10578 aic7xxx_print_scratch_ram(p);
10579 spin_unlock_irq(p->host->host_lock);
10583 /*+F*************************************************************************
10588 * Abort the current SCSI command(s).
10589 *-F*************************************************************************/
10590 static int __aic7xxx_abort(struct scsi_cmnd *cmd)
10592 struct aic7xxx_scb *scb = NULL;
10593 struct aic7xxx_host *p;
10594 int found=0, disconnected;
10595 unsigned char saved_hscbptr, hscbptr, scb_control;
10596 struct aic_dev_data *aic_dev;
10600 printk(KERN_ERR "aic7xxx_abort: called with NULL cmd!\n");
10603 p = (struct aic7xxx_host *)cmd->device->host->hostdata;
10604 aic_dev = AIC_DEV(cmd);
10605 if(aic7xxx_position(cmd) < p->scb_data->numscbs)
10606 scb = (p->scb_data->scb_array[aic7xxx_position(cmd)]);
10611 aic7xxx_done_cmds_complete(p);
10612 /* If the command was already complete or just completed, then we didn't
10613 * do a reset, return FAILED */
10614 if(!(scb->flags & SCB_ACTIVE))
10617 pause_sequencer(p);
10620 * I added a new config option to the driver: "panic_on_abort" that will
10621 * cause the driver to panic and the machine to stop on the first abort
10622 * or reset call into the driver. At that point, it prints out a lot of
10623 * useful information for me which I can then use to try and debug the
10624 * problem. Simply enable the boot time prompt in order to activate this
10627 if (aic7xxx_panic_on_abort)
10628 aic7xxx_panic_abort(p, cmd);
10630 if (aic7xxx_verbose & VERBOSE_ABORT)
10632 printk(INFO_LEAD "Aborting scb %d, flags 0x%x, SEQADDR 0x%x, LASTPHASE "
10634 p->host_no, CTL_OF_SCB(scb), scb->hscb->tag, scb->flags,
10635 aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8),
10636 aic_inb(p, LASTPHASE));
10637 printk(INFO_LEAD "SG_CACHEPTR 0x%x, SG_COUNT %d, SCSISIGI 0x%x\n",
10638 p->host_no, CTL_OF_SCB(scb), (p->features & AHC_ULTRA2) ?
10639 aic_inb(p, SG_CACHEPTR) : 0, aic_inb(p, SG_COUNT),
10640 aic_inb(p, SCSISIGI));
10641 printk(INFO_LEAD "SSTAT0 0x%x, SSTAT1 0x%x, SSTAT2 0x%x\n",
10642 p->host_no, CTL_OF_SCB(scb), aic_inb(p, SSTAT0),
10643 aic_inb(p, SSTAT1), aic_inb(p, SSTAT2));
10646 if (scb->flags & SCB_WAITINGQ)
10648 if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
10649 printk(INFO_LEAD "SCB found on waiting list and "
10650 "aborted.\n", p->host_no, CTL_OF_SCB(scb));
10651 scbq_remove(&p->waiting_scbs, scb);
10652 scbq_remove(&aic_dev->delayed_scbs, scb);
10653 aic_dev->active_cmds++;
10655 scb->flags &= ~(SCB_WAITINGQ | SCB_ACTIVE);
10656 scb->flags |= SCB_ABORT | SCB_QUEUED_FOR_DONE;
10661 * We just checked the waiting_q, now for the QINFIFO
10663 if ( ((found = aic7xxx_search_qinfifo(p, cmd->device->id, cmd->device->channel,
10664 cmd->device->lun, scb->hscb->tag, SCB_ABORT | SCB_QUEUED_FOR_DONE,
10665 FALSE, NULL)) != 0) &&
10666 (aic7xxx_verbose & VERBOSE_ABORT_PROCESS))
10668 printk(INFO_LEAD "SCB found in QINFIFO and aborted.\n", p->host_no,
10674 * QINFIFO, waitingq, completeq done. Next, check WAITING_SCB list in card
10677 saved_hscbptr = aic_inb(p, SCBPTR);
10678 if ((hscbptr = aic7xxx_find_scb(p, scb)) != SCB_LIST_NULL)
10680 aic_outb(p, hscbptr, SCBPTR);
10681 scb_control = aic_inb(p, SCB_CONTROL);
10682 disconnected = scb_control & DISCONNECTED;
10684 * If the DISCONNECTED bit is not set in SCB_CONTROL, then we are
10685 * either currently active or on the waiting list.
10687 if(!disconnected && aic_inb(p, LASTPHASE) == P_BUSFREE) {
10688 if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
10689 printk(INFO_LEAD "SCB found on hardware waiting"
10690 " list and aborted.\n", p->host_no, CTL_OF_SCB(scb));
10691 /* If we are the only waiting command, stop the selection engine */
10692 if (aic_inb(p, WAITING_SCBH) == hscbptr && aic_inb(p, SCB_NEXT) ==
10695 aic_outb(p, aic_inb(p, SCSISEQ) & ~ENSELO, SCSISEQ);
10696 aic_outb(p, CLRSELTIMEO, CLRSINT1);
10697 aic_outb(p, SCB_LIST_NULL, WAITING_SCBH);
10701 unsigned char prev, next;
10702 prev = SCB_LIST_NULL;
10703 next = aic_inb(p, WAITING_SCBH);
10704 while(next != SCB_LIST_NULL)
10706 aic_outb(p, next, SCBPTR);
10707 if (next == hscbptr)
10709 next = aic_inb(p, SCB_NEXT);
10710 if (prev != SCB_LIST_NULL)
10712 aic_outb(p, prev, SCBPTR);
10713 aic_outb(p, next, SCB_NEXT);
10716 aic_outb(p, next, WAITING_SCBH);
10717 aic_outb(p, hscbptr, SCBPTR);
10718 next = SCB_LIST_NULL;
10723 next = aic_inb(p, SCB_NEXT);
10727 aic_outb(p, SCB_LIST_NULL, SCB_TAG);
10728 aic_outb(p, 0, SCB_CONTROL);
10729 aic7xxx_add_curscb_to_free_list(p);
10730 scb->flags = SCB_ABORT | SCB_QUEUED_FOR_DONE;
10733 else if (!disconnected)
10736 * We are the currently active command
10738 if((aic_inb(p, LASTPHASE) == P_MESGIN) ||
10739 (aic_inb(p, LASTPHASE) == P_MESGOUT))
10742 * Message buffer busy, unable to abort
10744 printk(INFO_LEAD "message buffer busy, unable to abort.\n",
10745 p->host_no, CTL_OF_SCB(scb));
10746 unpause_sequencer(p, FALSE);
10749 /* Fallthrough to below, set ATNO after we set SCB_CONTROL */
10751 aic_outb(p, scb_control | MK_MESSAGE, SCB_CONTROL);
10754 aic_outb(p, HOST_MSG, MSG_OUT);
10755 aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO);
10757 aic_outb(p, saved_hscbptr, SCBPTR);
10762 * The scb isn't in the card at all and it is active and it isn't in
10763 * any of the queues, so it must be disconnected and paged out. Fall
10764 * through to the code below.
10769 p->flags |= AHC_ABORT_PENDING;
10770 scb->flags |= SCB_QUEUED_ABORT | SCB_ABORT | SCB_RECOVERY_SCB;
10771 scb->hscb->control |= MK_MESSAGE;
10774 if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
10775 printk(INFO_LEAD "SCB disconnected. Queueing Abort"
10776 " SCB.\n", p->host_no, CTL_OF_SCB(scb));
10777 p->qinfifo[p->qinfifonext++] = scb->hscb->tag;
10778 if (p->features & AHC_QUEUE_REGS)
10779 aic_outb(p, p->qinfifonext, HNSCB_QOFF);
10781 aic_outb(p, p->qinfifonext, KERNEL_QINPOS);
10783 unpause_sequencer(p, FALSE);
10784 spin_unlock_irq(p->host->host_lock);
10786 spin_lock_irq(p->host->host_lock);
10787 if (p->flags & AHC_ABORT_PENDING)
10789 if (aic7xxx_verbose & VERBOSE_ABORT_RETURN)
10790 printk(INFO_LEAD "Abort never delivered, returning FAILED\n", p->host_no,
10792 p->flags &= ~AHC_ABORT_PENDING;
10795 if (aic7xxx_verbose & VERBOSE_ABORT_RETURN)
10796 printk(INFO_LEAD "Abort successful.\n", p->host_no, CTL_OF_CMD(cmd));
10800 if (aic7xxx_verbose & VERBOSE_ABORT_RETURN)
10801 printk(INFO_LEAD "Abort successful.\n", p->host_no, CTL_OF_CMD(cmd));
10802 aic7xxx_run_done_queue(p, TRUE);
10803 unpause_sequencer(p, FALSE);
10807 static int aic7xxx_abort(struct scsi_cmnd *cmd)
10811 spin_lock_irq(cmd->device->host->host_lock);
10812 rc = __aic7xxx_abort(cmd);
10813 spin_unlock_irq(cmd->device->host->host_lock);
10819 /*+F*************************************************************************
10824 * Resetting the bus always succeeds - is has to, otherwise the
10825 * kernel will panic! Try a surgical technique - sending a BUS
10826 * DEVICE RESET message - on the offending target before pulling
10827 * the SCSI bus reset line.
10828 *-F*************************************************************************/
10829 static int aic7xxx_reset(struct scsi_cmnd *cmd)
10831 struct aic7xxx_scb *scb;
10832 struct aic7xxx_host *p;
10833 struct aic_dev_data *aic_dev;
10835 p = (struct aic7xxx_host *) cmd->device->host->hostdata;
10836 spin_lock_irq(p->host->host_lock);
10838 aic_dev = AIC_DEV(cmd);
10839 if(aic7xxx_position(cmd) < p->scb_data->numscbs)
10841 scb = (p->scb_data->scb_array[aic7xxx_position(cmd)]);
10842 if (scb->cmd != cmd)
10851 * I added a new config option to the driver: "panic_on_abort" that will
10852 * cause the driver to panic and the machine to stop on the first abort
10853 * or reset call into the driver. At that point, it prints out a lot of
10854 * useful information for me which I can then use to try and debug the
10855 * problem. Simply enable the boot time prompt in order to activate this
10858 if (aic7xxx_panic_on_abort)
10859 aic7xxx_panic_abort(p, cmd);
10861 pause_sequencer(p);
10863 while((aic_inb(p, INTSTAT) & INT_PEND) && !(p->flags & AHC_IN_ISR))
10866 pause_sequencer(p);
10868 aic7xxx_done_cmds_complete(p);
10870 if(scb && (scb->cmd == NULL))
10873 * We just completed the command when we ran the isr stuff, so we no
10876 unpause_sequencer(p, FALSE);
10877 spin_unlock_irq(p->host->host_lock);
10882 * By this point, we want to already know what we are going to do and
10883 * only have the following code implement our course of action.
10885 aic7xxx_reset_channel(p, cmd->device->channel, TRUE);
10886 if (p->features & AHC_TWIN)
10888 aic7xxx_reset_channel(p, cmd->device->channel ^ 0x01, TRUE);
10889 restart_sequencer(p);
10891 aic_outb(p, aic_inb(p, SIMODE1) & ~(ENREQINIT|ENBUSFREE), SIMODE1);
10892 aic7xxx_clear_intstat(p);
10893 p->flags &= ~AHC_HANDLING_REQINITS;
10894 p->msg_type = MSG_TYPE_NONE;
10897 aic7xxx_run_done_queue(p, TRUE);
10898 unpause_sequencer(p, FALSE);
10899 spin_unlock_irq(p->host->host_lock);
10904 /*+F*************************************************************************
10906 * aic7xxx_biosparam
10909 * Return the disk geometry for the given SCSI device.
10912 * This function is broken for today's really large drives and needs
10914 *-F*************************************************************************/
10916 aic7xxx_biosparam(struct scsi_device *sdev, struct block_device *bdev,
10917 sector_t capacity, int geom[])
10919 sector_t heads, sectors, cylinders;
10921 struct aic7xxx_host *p;
10922 unsigned char *buf;
10924 p = (struct aic7xxx_host *) sdev->host->hostdata;
10925 buf = scsi_bios_ptable(bdev);
10929 ret = scsi_partsize(buf, capacity, &geom[2], &geom[0], &geom[1]);
10937 cylinders = capacity >> 11;
10939 if ((p->flags & AHC_EXTEND_TRANS_A) && (cylinders > 1024))
10943 cylinders = capacity >> 14;
10944 if(capacity > (65535 * heads * sectors))
10947 cylinders = ((unsigned int)capacity) / (unsigned int)(heads * sectors);
10950 geom[0] = (int)heads;
10951 geom[1] = (int)sectors;
10952 geom[2] = (int)cylinders;
10957 /*+F*************************************************************************
10962 * Free the passed in Scsi_Host memory structures prior to unloading the
10964 *-F*************************************************************************/
10966 aic7xxx_release(struct Scsi_Host *host)
10968 struct aic7xxx_host *p = (struct aic7xxx_host *) host->hostdata;
10969 struct aic7xxx_host *next, *prev;
10972 free_irq(p->irq, p);
10978 #endif /* MMAPIO */
10980 release_region(p->base, MAXREG - MINREG);
10983 pci_release_regions(p->pdev);
10984 pci_dev_put(p->pdev);
10988 next = first_aic7xxx;
10989 while(next != NULL)
10994 first_aic7xxx = next->next;
10996 prev->next = next->next;
11008 /*+F*************************************************************************
11010 * aic7xxx_print_card
11013 * Print out all of the control registers on the card
11015 * NOTE: This function is not yet safe for use on the VLB and EISA
11016 * controllers, so it isn't used on those controllers at all.
11017 *-F*************************************************************************/
11019 aic7xxx_print_card(struct aic7xxx_host *p)
11022 static struct register_ranges {
11026 { 0, {0,} }, /* none */
11027 {10, {0x00, 0x05, 0x08, 0x11, 0x18, 0x19, 0x1f, 0x1f, 0x60, 0x60, /*7771*/
11028 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9b, 0x9f} },
11029 { 9, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7850*/
11030 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} },
11031 { 9, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7860*/
11032 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} },
11033 {10, {0x00, 0x05, 0x08, 0x11, 0x18, 0x19, 0x1c, 0x1f, 0x60, 0x60, /*7870*/
11034 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} },
11035 {10, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1a, 0x1c, 0x1f, 0x60, 0x60, /*7880*/
11036 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} },
11037 {16, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7890*/
11038 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9f, 0x9f,
11039 0xe0, 0xf1, 0xf4, 0xf4, 0xf6, 0xf6, 0xf8, 0xf8, 0xfa, 0xfc,
11041 {12, {0x00, 0x05, 0x08, 0x11, 0x18, 0x19, 0x1b, 0x1f, 0x60, 0x60, /*7895*/
11042 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a,
11043 0x9f, 0x9f, 0xe0, 0xf1} },
11044 {16, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7896*/
11045 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9f, 0x9f,
11046 0xe0, 0xf1, 0xf4, 0xf4, 0xf6, 0xf6, 0xf8, 0xf8, 0xfa, 0xfc,
11048 {12, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7892*/
11049 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9c, 0x9f,
11050 0xe0, 0xf1, 0xf4, 0xfc} },
11051 {12, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7899*/
11052 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9c, 0x9f,
11053 0xe0, 0xf1, 0xf4, 0xfc} },
11055 chip = p->chip & AHC_CHIPID_MASK;
11057 board_names[p->board_name_index]);
11058 switch(p->chip & ~AHC_CHIPID_MASK)
11061 printk("VLB Slot %d.\n", p->pci_device_fn);
11064 printk("EISA Slot %d.\n", p->pci_device_fn);
11068 printk("PCI %d/%d/%d.\n", p->pci_bus, PCI_SLOT(p->pci_device_fn),
11069 PCI_FUNC(p->pci_device_fn));
11074 * the registers on the card....
11076 printk("Card Dump:\n");
11078 for(i=0; i<cards_ds[chip].num_ranges; i++)
11080 for(j = cards_ds[chip].range_val[ i * 2 ];
11081 j <= cards_ds[chip].range_val[ i * 2 + 1 ] ;
11084 printk("%02x:%02x ", j, aic_inb(p, j));
11096 * If this was an Ultra2 controller, then we just hosed the card in terms
11097 * of the QUEUE REGS. This function is only called at init time or by
11098 * the panic_abort function, so it's safe to assume a generic init time
11102 if(p->features & AHC_QUEUE_REGS)
11104 aic_outb(p, 0, SDSCB_QOFF);
11105 aic_outb(p, 0, SNSCB_QOFF);
11106 aic_outb(p, 0, HNSCB_QOFF);
11111 /*+F*************************************************************************
11113 * aic7xxx_print_scratch_ram
11116 * Print out the scratch RAM values on the card.
11117 *-F*************************************************************************/
11119 aic7xxx_print_scratch_ram(struct aic7xxx_host *p)
11124 printk("Scratch RAM:\n");
11125 for(i = SRAM_BASE; i < SEQCTL; i++)
11127 printk("%02x:%02x ", i, aic_inb(p, i));
11134 if (p->features & AHC_MORE_SRAM)
11136 for(i = TARG_OFFSET; i < 0x80; i++)
11138 printk("%02x:%02x ", i, aic_inb(p, i));
11150 #include "aic7xxx_old/aic7xxx_proc.c"
11152 MODULE_LICENSE("Dual BSD/GPL");
11153 MODULE_VERSION(AIC7XXX_H_VERSION);
11156 static struct scsi_host_template driver_template = {
11157 .proc_info = aic7xxx_proc_info,
11158 .detect = aic7xxx_detect,
11159 .release = aic7xxx_release,
11160 .info = aic7xxx_info,
11161 .queuecommand = aic7xxx_queue,
11162 .slave_alloc = aic7xxx_slave_alloc,
11163 .slave_configure = aic7xxx_slave_configure,
11164 .slave_destroy = aic7xxx_slave_destroy,
11165 .bios_param = aic7xxx_biosparam,
11166 .eh_abort_handler = aic7xxx_abort,
11167 .eh_device_reset_handler = aic7xxx_bus_device_reset,
11168 .eh_host_reset_handler = aic7xxx_reset,
11171 .max_sectors = 2048,
11173 .use_clustering = ENABLE_CLUSTERING,
11176 #include "scsi_module.c"
11179 * Overrides for Emacs so that we almost follow Linus's tabbing style.
11180 * Emacs will notice this stuff at the end of the file and automatically
11181 * adjust the settings for this buffer only. This must remain at the end
11183 * ---------------------------------------------------------------------------
11185 * c-indent-level: 2
11186 * c-brace-imaginary-offset: 0
11187 * c-brace-offset: -2
11188 * c-argdecl-indent: 2
11189 * c-label-offset: -2
11190 * c-continued-statement-offset: 2
11191 * c-continued-brace-offset: 0
11192 * indent-tabs-mode: nil