2 * Adaptec AIC79xx device driver for Linux.
4 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.c#171 $
6 * --------------------------------------------------------------------------
7 * Copyright (c) 1994-2000 Justin T. Gibbs.
8 * Copyright (c) 1997-1999 Doug Ledford
9 * Copyright (c) 2000-2003 Adaptec Inc.
10 * All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions, and the following disclaimer,
17 * without modification.
18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19 * substantially similar to the "NO WARRANTY" disclaimer below
20 * ("Disclaimer") and any redistribution must be conditioned upon
21 * including a substantially similar Disclaimer requirement for further
22 * binary redistribution.
23 * 3. Neither the names of the above-listed copyright holders nor the names
24 * of any contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
27 * Alternatively, this software may be distributed under the terms of the
28 * GNU General Public License ("GPL") version 2 as published by the Free
29 * Software Foundation.
32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42 * POSSIBILITY OF SUCH DAMAGES.
45 #include "aic79xx_osm.h"
46 #include "aic79xx_inline.h"
47 #include <scsi/scsicam.h>
49 static struct scsi_transport_template
*ahd_linux_transport_template
= NULL
;
52 * Include aiclib.c as part of our
53 * "module dependencies are hard" work around.
57 #include <linux/init.h> /* __setup */
58 #include <linux/mm.h> /* For fetching system memory size */
59 #include <linux/blkdev.h> /* For block_size() */
60 #include <linux/delay.h> /* For ssleep/msleep */
63 * Lock protecting manipulation of the ahd softc list.
65 spinlock_t ahd_list_spinlock
;
68 * Bucket size for counting good commands in between bad ones.
70 #define AHD_LINUX_ERR_THRESH 1000
73 * Set this to the delay in seconds after SCSI bus reset.
74 * Note, we honor this only for the initial bus reset.
75 * The scsi error recovery code performs its own bus settle
76 * delay handling for error recovery actions.
78 #ifdef CONFIG_AIC79XX_RESET_DELAY_MS
79 #define AIC79XX_RESET_DELAY CONFIG_AIC79XX_RESET_DELAY_MS
81 #define AIC79XX_RESET_DELAY 5000
85 * To change the default number of tagged transactions allowed per-device,
86 * add a line to the lilo.conf file like:
87 * append="aic79xx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}"
88 * which will result in the first four devices on the first two
89 * controllers being set to a tagged queue depth of 32.
91 * The tag_commands is an array of 16 to allow for wide and twin adapters.
92 * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15
96 uint16_t tag_commands
[16]; /* Allow for wide/twin adapters. */
100 * Modify this as you see fit for your system.
102 * 0 tagged queuing disabled
103 * 1 <= n <= 253 n == max tags ever dispatched.
105 * The driver will throttle the number of commands dispatched to a
106 * device if it returns queue full. For devices with a fixed maximum
107 * queue depth, the driver will eventually determine this depth and
108 * lock it in (a console message is printed to indicate that a lock
109 * has occurred). On some devices, queue full is returned for a temporary
110 * resource shortage. These devices will return queue full at varying
111 * depths. The driver will throttle back when the queue fulls occur and
112 * attempt to slowly increase the depth over time as the device recovers
113 * from the resource shortage.
115 * In this example, the first line will disable tagged queueing for all
116 * the devices on the first probed aic79xx adapter.
118 * The second line enables tagged queueing with 4 commands/LUN for IDs
119 * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
120 * driver to attempt to use up to 64 tags for ID 1.
122 * The third line is the same as the first line.
124 * The fourth line disables tagged queueing for devices 0 and 3. It
125 * enables tagged queueing for the other IDs, with 16 commands/LUN
126 * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for
127 * IDs 2, 5-7, and 9-15.
131 * NOTE: The below structure is for reference only, the actual structure
132 * to modify in order to change things is just below this comment block.
133 adapter_tag_info_t aic79xx_tag_info[] =
135 {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
136 {{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}},
137 {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
138 {{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}}
142 #ifdef CONFIG_AIC79XX_CMDS_PER_DEVICE
143 #define AIC79XX_CMDS_PER_DEVICE CONFIG_AIC79XX_CMDS_PER_DEVICE
145 #define AIC79XX_CMDS_PER_DEVICE AHD_MAX_QUEUE
148 #define AIC79XX_CONFIGED_TAG_COMMANDS { \
149 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
150 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
151 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
152 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
153 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
154 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
155 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
156 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE \
160 * By default, use the number of commands specified by
161 * the users kernel configuration.
163 static adapter_tag_info_t aic79xx_tag_info
[] =
165 {AIC79XX_CONFIGED_TAG_COMMANDS
},
166 {AIC79XX_CONFIGED_TAG_COMMANDS
},
167 {AIC79XX_CONFIGED_TAG_COMMANDS
},
168 {AIC79XX_CONFIGED_TAG_COMMANDS
},
169 {AIC79XX_CONFIGED_TAG_COMMANDS
},
170 {AIC79XX_CONFIGED_TAG_COMMANDS
},
171 {AIC79XX_CONFIGED_TAG_COMMANDS
},
172 {AIC79XX_CONFIGED_TAG_COMMANDS
},
173 {AIC79XX_CONFIGED_TAG_COMMANDS
},
174 {AIC79XX_CONFIGED_TAG_COMMANDS
},
175 {AIC79XX_CONFIGED_TAG_COMMANDS
},
176 {AIC79XX_CONFIGED_TAG_COMMANDS
},
177 {AIC79XX_CONFIGED_TAG_COMMANDS
},
178 {AIC79XX_CONFIGED_TAG_COMMANDS
},
179 {AIC79XX_CONFIGED_TAG_COMMANDS
},
180 {AIC79XX_CONFIGED_TAG_COMMANDS
}
184 * The I/O cell on the chip is very configurable in respect to its analog
185 * characteristics. Set the defaults here; they can be overriden with
186 * the proper insmod parameters.
188 struct ahd_linux_iocell_opts
194 #define AIC79XX_DEFAULT_PRECOMP 0xFF
195 #define AIC79XX_DEFAULT_SLEWRATE 0xFF
196 #define AIC79XX_DEFAULT_AMPLITUDE 0xFF
197 #define AIC79XX_DEFAULT_IOOPTS \
199 AIC79XX_DEFAULT_PRECOMP, \
200 AIC79XX_DEFAULT_SLEWRATE, \
201 AIC79XX_DEFAULT_AMPLITUDE \
203 #define AIC79XX_PRECOMP_INDEX 0
204 #define AIC79XX_SLEWRATE_INDEX 1
205 #define AIC79XX_AMPLITUDE_INDEX 2
206 static struct ahd_linux_iocell_opts aic79xx_iocell_info
[] =
208 AIC79XX_DEFAULT_IOOPTS
,
209 AIC79XX_DEFAULT_IOOPTS
,
210 AIC79XX_DEFAULT_IOOPTS
,
211 AIC79XX_DEFAULT_IOOPTS
,
212 AIC79XX_DEFAULT_IOOPTS
,
213 AIC79XX_DEFAULT_IOOPTS
,
214 AIC79XX_DEFAULT_IOOPTS
,
215 AIC79XX_DEFAULT_IOOPTS
,
216 AIC79XX_DEFAULT_IOOPTS
,
217 AIC79XX_DEFAULT_IOOPTS
,
218 AIC79XX_DEFAULT_IOOPTS
,
219 AIC79XX_DEFAULT_IOOPTS
,
220 AIC79XX_DEFAULT_IOOPTS
,
221 AIC79XX_DEFAULT_IOOPTS
,
222 AIC79XX_DEFAULT_IOOPTS
,
223 AIC79XX_DEFAULT_IOOPTS
227 * There should be a specific return value for this in scsi.h, but
228 * it seems that most drivers ignore it.
230 #define DID_UNDERFLOW DID_ERROR
233 ahd_print_path(struct ahd_softc
*ahd
, struct scb
*scb
)
235 printk("(scsi%d:%c:%d:%d): ",
236 ahd
->platform_data
->host
->host_no
,
237 scb
!= NULL
? SCB_GET_CHANNEL(ahd
, scb
) : 'X',
238 scb
!= NULL
? SCB_GET_TARGET(ahd
, scb
) : -1,
239 scb
!= NULL
? SCB_GET_LUN(scb
) : -1);
243 * XXX - these options apply unilaterally to _all_ adapters
244 * cards in the system. This should be fixed. Exceptions to this
245 * rule are noted in the comments.
249 * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This
250 * has no effect on any later resets that might occur due to things like
253 static uint32_t aic79xx_no_reset
;
256 * Certain PCI motherboards will scan PCI devices from highest to lowest,
257 * others scan from lowest to highest, and they tend to do all kinds of
258 * strange things when they come into contact with PCI bridge chips. The
259 * net result of all this is that the PCI card that is actually used to boot
260 * the machine is very hard to detect. Most motherboards go from lowest
261 * PCI slot number to highest, and the first SCSI controller found is the
262 * one you boot from. The only exceptions to this are when a controller
263 * has its BIOS disabled. So, we by default sort all of our SCSI controllers
264 * from lowest PCI slot number to highest PCI slot number. We also force
265 * all controllers with their BIOS disabled to the end of the list. This
266 * works on *almost* all computers. Where it doesn't work, we have this
267 * option. Setting this option to non-0 will reverse the order of the sort
268 * to highest first, then lowest, but will still leave cards with their BIOS
269 * disabled at the very end. That should fix everyone up unless there are
270 * really strange cirumstances.
272 static uint32_t aic79xx_reverse_scan
;
275 * Should we force EXTENDED translation on a controller.
276 * 0 == Use whatever is in the SEEPROM or default to off
277 * 1 == Use whatever is in the SEEPROM or default to on
279 static uint32_t aic79xx_extended
;
282 * PCI bus parity checking of the Adaptec controllers. This is somewhat
283 * dubious at best. To my knowledge, this option has never actually
284 * solved a PCI parity problem, but on certain machines with broken PCI
285 * chipset configurations, it can generate tons of false error messages.
286 * It's included in the driver for completeness.
287 * 0 = Shut off PCI parity check
288 * non-0 = Enable PCI parity check
290 * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
291 * variable to -1 you would actually want to simply pass the variable
292 * name without a number. That will invert the 0 which will result in
295 static uint32_t aic79xx_pci_parity
= ~0;
298 * There are lots of broken chipsets in the world. Some of them will
299 * violate the PCI spec when we issue byte sized memory writes to our
300 * controller. I/O mapped register access, if allowed by the given
301 * platform, will work in almost all cases.
303 uint32_t aic79xx_allow_memio
= ~0;
306 * aic79xx_detect() has been run, so register all device arrivals
307 * immediately with the system rather than deferring to the sorted
308 * attachment performed by aic79xx_detect().
310 int aic79xx_detect_complete
;
313 * So that we can set how long each device is given as a selection timeout.
314 * The table of values goes like this:
319 * We default to 256ms because some older devices need a longer time
320 * to respond to initial selection.
322 static uint32_t aic79xx_seltime
;
325 * Certain devices do not perform any aging on commands. Should the
326 * device be saturated by commands in one portion of the disk, it is
327 * possible for transactions on far away sectors to never be serviced.
328 * To handle these devices, we can periodically send an ordered tag to
329 * force all outstanding transactions to be serviced prior to a new
332 uint32_t aic79xx_periodic_otag
;
335 * Module information and settable options.
337 static char *aic79xx
= NULL
;
339 MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>");
340 MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver");
341 MODULE_LICENSE("Dual BSD/GPL");
342 MODULE_VERSION(AIC79XX_DRIVER_VERSION
);
343 module_param(aic79xx
, charp
, 0444);
344 MODULE_PARM_DESC(aic79xx
,
345 "period delimited, options string.\n"
346 " verbose Enable verbose/diagnostic logging\n"
347 " allow_memio Allow device registers to be memory mapped\n"
348 " debug Bitmask of debug values to enable\n"
349 " no_reset Supress initial bus resets\n"
350 " extended Enable extended geometry on all controllers\n"
351 " periodic_otag Send an ordered tagged transaction\n"
352 " periodically to prevent tag starvation.\n"
353 " This may be required by some older disk\n"
354 " or drives/RAID arrays.\n"
355 " reverse_scan Sort PCI devices highest Bus/Slot to lowest\n"
356 " tag_info:<tag_str> Set per-target tag depth\n"
357 " global_tag_depth:<int> Global tag depth for all targets on all buses\n"
358 " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
359 " precomp:<pcomp_list> Set the signal precompensation (0-7).\n"
360 " amplitude:<int> Set the signal amplitude (0-7).\n"
361 " seltime:<int> Selection Timeout:\n"
362 " (0/256ms,1/128ms,2/64ms,3/32ms)\n"
364 " Sample /etc/modprobe.conf line:\n"
365 " Enable verbose logging\n"
366 " Set tag depth on Controller 2/Target 2 to 10 tags\n"
367 " Shorten the selection timeout to 128ms\n"
369 " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n"
372 static void ahd_linux_handle_scsi_status(struct ahd_softc
*,
373 struct scsi_device
*,
375 static void ahd_linux_queue_cmd_complete(struct ahd_softc
*ahd
,
376 struct scsi_cmnd
*cmd
);
377 static void ahd_linux_sem_timeout(u_long arg
);
378 static int ahd_linux_queue_recovery_cmd(struct scsi_cmnd
*cmd
, scb_flag flag
);
379 static void ahd_linux_initialize_scsi_bus(struct ahd_softc
*ahd
);
380 static u_int
ahd_linux_user_tagdepth(struct ahd_softc
*ahd
,
381 struct ahd_devinfo
*devinfo
);
382 static void ahd_linux_device_queue_depth(struct scsi_device
*);
383 static int ahd_linux_run_command(struct ahd_softc
*,
384 struct ahd_linux_device
*,
386 static void ahd_linux_setup_tag_info_global(char *p
);
387 static aic_option_callback_t ahd_linux_setup_tag_info
;
388 static aic_option_callback_t ahd_linux_setup_iocell_info
;
389 static int aic79xx_setup(char *c
);
390 static int ahd_linux_next_unit(void);
392 /****************************** Inlines ***************************************/
393 static __inline
void ahd_linux_unmap_scb(struct ahd_softc
*, struct scb
*);
396 ahd_linux_unmap_scb(struct ahd_softc
*ahd
, struct scb
*scb
)
398 struct scsi_cmnd
*cmd
;
402 direction
= cmd
->sc_data_direction
;
403 ahd_sync_sglist(ahd
, scb
, BUS_DMASYNC_POSTWRITE
);
404 if (cmd
->use_sg
!= 0) {
405 struct scatterlist
*sg
;
407 sg
= (struct scatterlist
*)cmd
->request_buffer
;
408 pci_unmap_sg(ahd
->dev_softc
, sg
, cmd
->use_sg
, direction
);
409 } else if (cmd
->request_bufflen
!= 0) {
410 pci_unmap_single(ahd
->dev_softc
,
411 scb
->platform_data
->buf_busaddr
,
412 cmd
->request_bufflen
, direction
);
416 /******************************** Macros **************************************/
417 #define BUILD_SCSIID(ahd, cmd) \
418 ((((cmd)->device->id << TID_SHIFT) & TID) | (ahd)->our_id)
421 * Try to detect an Adaptec 79XX controller.
424 ahd_linux_detect(struct scsi_host_template
*template)
426 struct ahd_softc
*ahd
;
431 * If we've been passed any parameters, process them now.
434 aic79xx_setup(aic79xx
);
436 template->proc_name
= "aic79xx";
439 * Initialize our softc list lock prior to
440 * probing for any adapters.
445 error
= ahd_linux_pci_init();
451 * Register with the SCSI layer all
452 * controllers we've found.
455 TAILQ_FOREACH(ahd
, &ahd_tailq
, links
) {
457 if (ahd_linux_register_host(ahd
, template) == 0)
460 aic79xx_detect_complete
++;
465 * Return a string describing the driver.
468 ahd_linux_info(struct Scsi_Host
*host
)
470 static char buffer
[512];
473 struct ahd_softc
*ahd
;
476 ahd
= *(struct ahd_softc
**)host
->hostdata
;
477 memset(bp
, 0, sizeof(buffer
));
478 strcpy(bp
, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
479 strcat(bp
, AIC79XX_DRIVER_VERSION
);
482 strcat(bp
, ahd
->description
);
485 ahd_controller_info(ahd
, ahd_info
);
486 strcat(bp
, ahd_info
);
493 * Queue an SCB to the controller.
496 ahd_linux_queue(struct scsi_cmnd
* cmd
, void (*scsi_done
) (struct scsi_cmnd
*))
498 struct ahd_softc
*ahd
;
499 struct ahd_linux_device
*dev
= scsi_transport_device_data(cmd
->device
);
501 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
504 * Close the race of a command that was in the process of
505 * being queued to us just as our simq was frozen. Let
506 * DV commands through so long as we are only frozen to
509 if (ahd
->platform_data
->qfrozen
!= 0) {
510 printf("%s: queue frozen\n", ahd_name(ahd
));
512 return SCSI_MLQUEUE_HOST_BUSY
;
516 * Save the callback on completion function.
518 cmd
->scsi_done
= scsi_done
;
520 cmd
->result
= CAM_REQ_INPROG
<< 16;
522 return ahd_linux_run_command(ahd
, dev
, cmd
);
525 static inline struct scsi_target
**
526 ahd_linux_target_in_softc(struct scsi_target
*starget
)
528 struct ahd_softc
*ahd
=
529 *((struct ahd_softc
**)dev_to_shost(&starget
->dev
)->hostdata
);
530 unsigned int target_offset
;
532 target_offset
= starget
->id
;
533 if (starget
->channel
!= 0)
536 return &ahd
->platform_data
->starget
[target_offset
];
540 ahd_linux_target_alloc(struct scsi_target
*starget
)
542 struct ahd_softc
*ahd
=
543 *((struct ahd_softc
**)dev_to_shost(&starget
->dev
)->hostdata
);
545 struct scsi_target
**ahd_targp
= ahd_linux_target_in_softc(starget
);
546 struct ahd_linux_target
*targ
= scsi_transport_target_data(starget
);
547 struct ahd_devinfo devinfo
;
548 struct ahd_initiator_tinfo
*tinfo
;
549 struct ahd_tmode_tstate
*tstate
;
550 char channel
= starget
->channel
+ 'A';
552 ahd_lock(ahd
, &flags
);
554 BUG_ON(*ahd_targp
!= NULL
);
556 *ahd_targp
= starget
;
557 memset(targ
, 0, sizeof(*targ
));
559 tinfo
= ahd_fetch_transinfo(ahd
, channel
, ahd
->our_id
,
560 starget
->id
, &tstate
);
561 ahd_compile_devinfo(&devinfo
, ahd
->our_id
, starget
->id
,
562 CAM_LUN_WILDCARD
, channel
,
564 spi_min_period(starget
) = AHD_SYNCRATE_MAX
; /* We can do U320 */
565 if ((ahd
->bugs
& AHD_PACED_NEGTABLE_BUG
) != 0)
566 spi_max_offset(starget
) = MAX_OFFSET_PACED_BUG
;
568 spi_max_offset(starget
) = MAX_OFFSET_PACED
;
569 spi_max_width(starget
) = ahd
->features
& AHD_WIDE
;
571 ahd_set_syncrate(ahd
, &devinfo
, 0, 0, 0,
572 AHD_TRANS_GOAL
, /*paused*/FALSE
);
573 ahd_set_width(ahd
, &devinfo
, MSG_EXT_WDTR_BUS_8_BIT
,
574 AHD_TRANS_GOAL
, /*paused*/FALSE
);
575 ahd_unlock(ahd
, &flags
);
581 ahd_linux_target_destroy(struct scsi_target
*starget
)
583 struct scsi_target
**ahd_targp
= ahd_linux_target_in_softc(starget
);
589 ahd_linux_slave_alloc(struct scsi_device
*sdev
)
591 struct ahd_softc
*ahd
=
592 *((struct ahd_softc
**)sdev
->host
->hostdata
);
593 struct scsi_target
*starget
= sdev
->sdev_target
;
594 struct ahd_linux_target
*targ
= scsi_transport_target_data(starget
);
595 struct ahd_linux_device
*dev
;
598 printf("%s: Slave Alloc %d\n", ahd_name(ahd
), sdev
->id
);
600 BUG_ON(targ
->sdev
[sdev
->lun
] != NULL
);
602 dev
= scsi_transport_device_data(sdev
);
603 memset(dev
, 0, sizeof(*dev
));
606 * We start out life using untagged
607 * transactions of which we allow one.
612 * Set maxtags to 0. This will be changed if we
613 * later determine that we are dealing with
614 * a tagged queuing capable device.
618 targ
->sdev
[sdev
->lun
] = sdev
;
624 ahd_linux_slave_configure(struct scsi_device
*sdev
)
626 struct ahd_softc
*ahd
;
628 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
630 printf("%s: Slave Configure %d\n", ahd_name(ahd
), sdev
->id
);
632 ahd_linux_device_queue_depth(sdev
);
634 /* Initial Domain Validation */
635 if (!spi_initial_dv(sdev
->sdev_target
))
642 ahd_linux_slave_destroy(struct scsi_device
*sdev
)
644 struct ahd_softc
*ahd
;
645 struct ahd_linux_device
*dev
= scsi_transport_device_data(sdev
);
646 struct ahd_linux_target
*targ
= scsi_transport_target_data(sdev
->sdev_target
);
648 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
650 printf("%s: Slave Destroy %d\n", ahd_name(ahd
), sdev
->id
);
654 targ
->sdev
[sdev
->lun
] = NULL
;
658 #if defined(__i386__)
660 * Return the disk geometry for the given SCSI device.
663 ahd_linux_biosparam(struct scsi_device
*sdev
, struct block_device
*bdev
,
664 sector_t capacity
, int geom
[])
672 struct ahd_softc
*ahd
;
674 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
676 bh
= scsi_bios_ptable(bdev
);
678 ret
= scsi_partsize(bh
, capacity
,
679 &geom
[2], &geom
[0], &geom
[1]);
686 cylinders
= aic_sector_div(capacity
, heads
, sectors
);
688 if (aic79xx_extended
!= 0)
691 extended
= (ahd
->flags
& AHD_EXTENDED_TRANS_A
) != 0;
692 if (extended
&& cylinders
>= 1024) {
695 cylinders
= aic_sector_div(capacity
, heads
, sectors
);
705 * Abort the current SCSI command(s).
708 ahd_linux_abort(struct scsi_cmnd
*cmd
)
712 error
= ahd_linux_queue_recovery_cmd(cmd
, SCB_ABORT
);
714 printf("aic79xx_abort returns 0x%x\n", error
);
719 * Attempt to send a target reset message to the device that timed out.
722 ahd_linux_dev_reset(struct scsi_cmnd
*cmd
)
726 error
= ahd_linux_queue_recovery_cmd(cmd
, SCB_DEVICE_RESET
);
728 printf("aic79xx_dev_reset returns 0x%x\n", error
);
733 * Reset the SCSI bus.
736 ahd_linux_bus_reset(struct scsi_cmnd
*cmd
)
738 struct ahd_softc
*ahd
;
742 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
744 if ((ahd_debug
& AHD_SHOW_RECOVERY
) != 0)
745 printf("%s: Bus reset called for cmd %p\n",
749 found
= ahd_reset_channel(ahd
, cmd
->device
->channel
+ 'A',
750 /*initiate reset*/TRUE
);
754 printf("%s: SCSI bus reset delivered. "
755 "%d SCBs aborted.\n", ahd_name(ahd
), found
);
760 struct scsi_host_template aic79xx_driver_template
= {
761 .module
= THIS_MODULE
,
763 .proc_info
= ahd_linux_proc_info
,
764 .info
= ahd_linux_info
,
765 .queuecommand
= ahd_linux_queue
,
766 .eh_abort_handler
= ahd_linux_abort
,
767 .eh_device_reset_handler
= ahd_linux_dev_reset
,
768 .eh_bus_reset_handler
= ahd_linux_bus_reset
,
769 #if defined(__i386__)
770 .bios_param
= ahd_linux_biosparam
,
772 .can_queue
= AHD_MAX_QUEUE
,
775 .use_clustering
= ENABLE_CLUSTERING
,
776 .slave_alloc
= ahd_linux_slave_alloc
,
777 .slave_configure
= ahd_linux_slave_configure
,
778 .slave_destroy
= ahd_linux_slave_destroy
,
779 .target_alloc
= ahd_linux_target_alloc
,
780 .target_destroy
= ahd_linux_target_destroy
,
783 /******************************** Bus DMA *************************************/
785 ahd_dma_tag_create(struct ahd_softc
*ahd
, bus_dma_tag_t parent
,
786 bus_size_t alignment
, bus_size_t boundary
,
787 dma_addr_t lowaddr
, dma_addr_t highaddr
,
788 bus_dma_filter_t
*filter
, void *filterarg
,
789 bus_size_t maxsize
, int nsegments
,
790 bus_size_t maxsegsz
, int flags
, bus_dma_tag_t
*ret_tag
)
794 dmat
= malloc(sizeof(*dmat
), M_DEVBUF
, M_NOWAIT
);
799 * Linux is very simplistic about DMA memory. For now don't
800 * maintain all specification information. Once Linux supplies
801 * better facilities for doing these operations, or the
802 * needs of this particular driver change, we might need to do
805 dmat
->alignment
= alignment
;
806 dmat
->boundary
= boundary
;
807 dmat
->maxsize
= maxsize
;
813 ahd_dma_tag_destroy(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
)
815 free(dmat
, M_DEVBUF
);
819 ahd_dmamem_alloc(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, void** vaddr
,
820 int flags
, bus_dmamap_t
*mapp
)
822 *vaddr
= pci_alloc_consistent(ahd
->dev_softc
,
823 dmat
->maxsize
, mapp
);
830 ahd_dmamem_free(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
,
831 void* vaddr
, bus_dmamap_t map
)
833 pci_free_consistent(ahd
->dev_softc
, dmat
->maxsize
,
838 ahd_dmamap_load(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
,
839 void *buf
, bus_size_t buflen
, bus_dmamap_callback_t
*cb
,
840 void *cb_arg
, int flags
)
843 * Assume for now that this will only be used during
844 * initialization and not for per-transaction buffer mapping.
846 bus_dma_segment_t stack_sg
;
848 stack_sg
.ds_addr
= map
;
849 stack_sg
.ds_len
= dmat
->maxsize
;
850 cb(cb_arg
, &stack_sg
, /*nseg*/1, /*error*/0);
855 ahd_dmamap_destroy(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
)
860 ahd_dmamap_unload(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
)
866 /********************* Platform Dependent Functions ***************************/
868 * Compare "left hand" softc with "right hand" softc, returning:
869 * < 0 - lahd has a lower priority than rahd
870 * 0 - Softcs are equal
871 * > 0 - lahd has a higher priority than rahd
874 ahd_softc_comp(struct ahd_softc
*lahd
, struct ahd_softc
*rahd
)
879 * Under Linux, cards are ordered as follows:
880 * 1) PCI devices that are marked as the boot controller.
881 * 2) PCI devices with BIOS enabled sorted by bus/slot/func.
882 * 3) All remaining PCI devices sorted by bus/slot/func.
885 value
= (lahd
->flags
& AHD_BOOT_CHANNEL
)
886 - (rahd
->flags
& AHD_BOOT_CHANNEL
);
888 /* Controllers set for boot have a *higher* priority */
892 value
= (lahd
->flags
& AHD_BIOS_ENABLED
)
893 - (rahd
->flags
& AHD_BIOS_ENABLED
);
895 /* Controllers with BIOS enabled have a *higher* priority */
898 /* Still equal. Sort by bus/slot/func. */
899 if (aic79xx_reverse_scan
!= 0)
900 value
= ahd_get_pci_bus(lahd
->dev_softc
)
901 - ahd_get_pci_bus(rahd
->dev_softc
);
903 value
= ahd_get_pci_bus(rahd
->dev_softc
)
904 - ahd_get_pci_bus(lahd
->dev_softc
);
907 if (aic79xx_reverse_scan
!= 0)
908 value
= ahd_get_pci_slot(lahd
->dev_softc
)
909 - ahd_get_pci_slot(rahd
->dev_softc
);
911 value
= ahd_get_pci_slot(rahd
->dev_softc
)
912 - ahd_get_pci_slot(lahd
->dev_softc
);
916 value
= rahd
->channel
- lahd
->channel
;
921 ahd_linux_setup_iocell_info(u_long index
, int instance
, int targ
, int32_t value
)
925 && (instance
< NUM_ELEMENTS(aic79xx_iocell_info
))) {
926 uint8_t *iocell_info
;
928 iocell_info
= (uint8_t*)&aic79xx_iocell_info
[instance
];
929 iocell_info
[index
] = value
& 0xFFFF;
931 printf("iocell[%d:%ld] = %d\n", instance
, index
, value
);
936 ahd_linux_setup_tag_info_global(char *p
)
940 tags
= simple_strtoul(p
+ 1, NULL
, 0) & 0xff;
941 printf("Setting Global Tags= %d\n", tags
);
943 for (i
= 0; i
< NUM_ELEMENTS(aic79xx_tag_info
); i
++) {
944 for (j
= 0; j
< AHD_NUM_TARGETS
; j
++) {
945 aic79xx_tag_info
[i
].tag_commands
[j
] = tags
;
951 ahd_linux_setup_tag_info(u_long arg
, int instance
, int targ
, int32_t value
)
954 if ((instance
>= 0) && (targ
>= 0)
955 && (instance
< NUM_ELEMENTS(aic79xx_tag_info
))
956 && (targ
< AHD_NUM_TARGETS
)) {
957 aic79xx_tag_info
[instance
].tag_commands
[targ
] = value
& 0x1FF;
959 printf("tag_info[%d:%d] = %d\n", instance
, targ
, value
);
964 * Handle Linux boot parameters. This routine allows for assigning a value
965 * to a parameter with a ':' between the parameter and the value.
966 * ie. aic79xx=stpwlev:1,extended
969 aic79xx_setup(char *s
)
979 { "extended", &aic79xx_extended
},
980 { "no_reset", &aic79xx_no_reset
},
981 { "verbose", &aic79xx_verbose
},
982 { "allow_memio", &aic79xx_allow_memio
},
984 { "debug", &ahd_debug
},
986 { "reverse_scan", &aic79xx_reverse_scan
},
987 { "periodic_otag", &aic79xx_periodic_otag
},
988 { "pci_parity", &aic79xx_pci_parity
},
989 { "seltime", &aic79xx_seltime
},
990 { "tag_info", NULL
},
991 { "global_tag_depth", NULL
},
992 { "slewrate", NULL
},
994 { "amplitude", NULL
},
997 end
= strchr(s
, '\0');
1000 * XXX ia64 gcc isn't smart enough to know that NUM_ELEMENTS
1001 * will never be 0 in this case.
1005 while ((p
= strsep(&s
, ",.")) != NULL
) {
1008 for (i
= 0; i
< NUM_ELEMENTS(options
); i
++) {
1010 n
= strlen(options
[i
].name
);
1011 if (strncmp(options
[i
].name
, p
, n
) == 0)
1014 if (i
== NUM_ELEMENTS(options
))
1017 if (strncmp(p
, "global_tag_depth", n
) == 0) {
1018 ahd_linux_setup_tag_info_global(p
+ n
);
1019 } else if (strncmp(p
, "tag_info", n
) == 0) {
1020 s
= aic_parse_brace_option("tag_info", p
+ n
, end
,
1021 2, ahd_linux_setup_tag_info
, 0);
1022 } else if (strncmp(p
, "slewrate", n
) == 0) {
1023 s
= aic_parse_brace_option("slewrate",
1024 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1025 AIC79XX_SLEWRATE_INDEX
);
1026 } else if (strncmp(p
, "precomp", n
) == 0) {
1027 s
= aic_parse_brace_option("precomp",
1028 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1029 AIC79XX_PRECOMP_INDEX
);
1030 } else if (strncmp(p
, "amplitude", n
) == 0) {
1031 s
= aic_parse_brace_option("amplitude",
1032 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1033 AIC79XX_AMPLITUDE_INDEX
);
1034 } else if (p
[n
] == ':') {
1035 *(options
[i
].flag
) = simple_strtoul(p
+ n
+ 1, NULL
, 0);
1036 } else if (!strncmp(p
, "verbose", n
)) {
1037 *(options
[i
].flag
) = 1;
1039 *(options
[i
].flag
) ^= 0xFFFFFFFF;
1045 __setup("aic79xx=", aic79xx_setup
);
1047 uint32_t aic79xx_verbose
;
1050 ahd_linux_register_host(struct ahd_softc
*ahd
, struct scsi_host_template
*template)
1053 struct Scsi_Host
*host
;
1057 template->name
= ahd
->description
;
1058 host
= scsi_host_alloc(template, sizeof(struct ahd_softc
*));
1062 *((struct ahd_softc
**)host
->hostdata
) = ahd
;
1064 scsi_assign_lock(host
, &ahd
->platform_data
->spin_lock
);
1065 ahd
->platform_data
->host
= host
;
1066 host
->can_queue
= AHD_MAX_QUEUE
;
1067 host
->cmd_per_lun
= 2;
1068 host
->sg_tablesize
= AHD_NSEG
;
1069 host
->this_id
= ahd
->our_id
;
1070 host
->irq
= ahd
->platform_data
->irq
;
1071 host
->max_id
= (ahd
->features
& AHD_WIDE
) ? 16 : 8;
1072 host
->max_lun
= AHD_NUM_LUNS
;
1073 host
->max_channel
= 0;
1074 host
->sg_tablesize
= AHD_NSEG
;
1075 ahd_set_unit(ahd
, ahd_linux_next_unit());
1076 sprintf(buf
, "scsi%d", host
->host_no
);
1077 new_name
= malloc(strlen(buf
) + 1, M_DEVBUF
, M_NOWAIT
);
1078 if (new_name
!= NULL
) {
1079 strcpy(new_name
, buf
);
1080 ahd_set_name(ahd
, new_name
);
1082 host
->unique_id
= ahd
->unit
;
1083 ahd_linux_initialize_scsi_bus(ahd
);
1084 ahd_intr_enable(ahd
, TRUE
);
1085 ahd_unlock(ahd
, &s
);
1087 host
->transportt
= ahd_linux_transport_template
;
1089 scsi_add_host(host
, &ahd
->dev_softc
->dev
); /* XXX handle failure */
1090 scsi_scan_host(host
);
1095 ahd_linux_get_memsize(void)
1100 return ((uint64_t)si
.totalram
<< PAGE_SHIFT
);
1104 * Find the smallest available unit number to use
1105 * for a new device. We don't just use a static
1106 * count to handle the "repeated hot-(un)plug"
1110 ahd_linux_next_unit(void)
1112 struct ahd_softc
*ahd
;
1117 TAILQ_FOREACH(ahd
, &ahd_tailq
, links
) {
1118 if (ahd
->unit
== unit
) {
1127 * Place the SCSI bus into a known state by either resetting it,
1128 * or forcing transfer negotiations on the next command to any
1132 ahd_linux_initialize_scsi_bus(struct ahd_softc
*ahd
)
1140 if (aic79xx_no_reset
!= 0)
1141 ahd
->flags
&= ~AHD_RESET_BUS_A
;
1143 if ((ahd
->flags
& AHD_RESET_BUS_A
) != 0)
1144 ahd_reset_channel(ahd
, 'A', /*initiate_reset*/TRUE
);
1146 numtarg
= (ahd
->features
& AHD_WIDE
) ? 16 : 8;
1149 * Force negotiation to async for all targets that
1150 * will not see an initial bus reset.
1152 for (; target_id
< numtarg
; target_id
++) {
1153 struct ahd_devinfo devinfo
;
1154 struct ahd_initiator_tinfo
*tinfo
;
1155 struct ahd_tmode_tstate
*tstate
;
1157 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
1158 target_id
, &tstate
);
1159 ahd_compile_devinfo(&devinfo
, ahd
->our_id
, target_id
,
1160 CAM_LUN_WILDCARD
, 'A', ROLE_INITIATOR
);
1161 ahd_update_neg_request(ahd
, &devinfo
, tstate
,
1162 tinfo
, AHD_NEG_ALWAYS
);
1164 /* Give the bus some time to recover */
1165 if ((ahd
->flags
& AHD_RESET_BUS_A
) != 0) {
1166 ahd_freeze_simq(ahd
);
1167 init_timer(&ahd
->platform_data
->reset_timer
);
1168 ahd
->platform_data
->reset_timer
.data
= (u_long
)ahd
;
1169 ahd
->platform_data
->reset_timer
.expires
=
1170 jiffies
+ (AIC79XX_RESET_DELAY
* HZ
)/1000;
1171 ahd
->platform_data
->reset_timer
.function
=
1172 (ahd_linux_callback_t
*)ahd_release_simq
;
1173 add_timer(&ahd
->platform_data
->reset_timer
);
1178 ahd_platform_alloc(struct ahd_softc
*ahd
, void *platform_arg
)
1180 ahd
->platform_data
=
1181 malloc(sizeof(struct ahd_platform_data
), M_DEVBUF
, M_NOWAIT
);
1182 if (ahd
->platform_data
== NULL
)
1184 memset(ahd
->platform_data
, 0, sizeof(struct ahd_platform_data
));
1185 ahd
->platform_data
->irq
= AHD_LINUX_NOIRQ
;
1187 init_MUTEX_LOCKED(&ahd
->platform_data
->eh_sem
);
1188 ahd
->seltime
= (aic79xx_seltime
& 0x3) << 4;
1193 ahd_platform_free(struct ahd_softc
*ahd
)
1195 struct scsi_target
*starget
;
1198 if (ahd
->platform_data
!= NULL
) {
1199 if (ahd
->platform_data
->host
!= NULL
) {
1200 scsi_remove_host(ahd
->platform_data
->host
);
1201 scsi_host_put(ahd
->platform_data
->host
);
1204 /* destroy all of the device and target objects */
1205 for (i
= 0; i
< AHD_NUM_TARGETS
; i
++) {
1206 starget
= ahd
->platform_data
->starget
[i
];
1207 if (starget
!= NULL
) {
1208 for (j
= 0; j
< AHD_NUM_LUNS
; j
++) {
1209 struct ahd_linux_target
*targ
=
1210 scsi_transport_target_data(starget
);
1211 if (targ
->sdev
[j
] == NULL
)
1213 targ
->sdev
[j
] = NULL
;
1215 ahd
->platform_data
->starget
[i
] = NULL
;
1219 if (ahd
->platform_data
->irq
!= AHD_LINUX_NOIRQ
)
1220 free_irq(ahd
->platform_data
->irq
, ahd
);
1221 if (ahd
->tags
[0] == BUS_SPACE_PIO
1222 && ahd
->bshs
[0].ioport
!= 0)
1223 release_region(ahd
->bshs
[0].ioport
, 256);
1224 if (ahd
->tags
[1] == BUS_SPACE_PIO
1225 && ahd
->bshs
[1].ioport
!= 0)
1226 release_region(ahd
->bshs
[1].ioport
, 256);
1227 if (ahd
->tags
[0] == BUS_SPACE_MEMIO
1228 && ahd
->bshs
[0].maddr
!= NULL
) {
1229 iounmap(ahd
->bshs
[0].maddr
);
1230 release_mem_region(ahd
->platform_data
->mem_busaddr
,
1233 free(ahd
->platform_data
, M_DEVBUF
);
1238 ahd_platform_init(struct ahd_softc
*ahd
)
1241 * Lookup and commit any modified IO Cell options.
1243 if (ahd
->unit
< NUM_ELEMENTS(aic79xx_iocell_info
)) {
1244 struct ahd_linux_iocell_opts
*iocell_opts
;
1246 iocell_opts
= &aic79xx_iocell_info
[ahd
->unit
];
1247 if (iocell_opts
->precomp
!= AIC79XX_DEFAULT_PRECOMP
)
1248 AHD_SET_PRECOMP(ahd
, iocell_opts
->precomp
);
1249 if (iocell_opts
->slewrate
!= AIC79XX_DEFAULT_SLEWRATE
)
1250 AHD_SET_SLEWRATE(ahd
, iocell_opts
->slewrate
);
1251 if (iocell_opts
->amplitude
!= AIC79XX_DEFAULT_AMPLITUDE
)
1252 AHD_SET_AMPLITUDE(ahd
, iocell_opts
->amplitude
);
1258 ahd_platform_freeze_devq(struct ahd_softc
*ahd
, struct scb
*scb
)
1260 ahd_platform_abort_scbs(ahd
, SCB_GET_TARGET(ahd
, scb
),
1261 SCB_GET_CHANNEL(ahd
, scb
),
1262 SCB_GET_LUN(scb
), SCB_LIST_NULL
,
1263 ROLE_UNKNOWN
, CAM_REQUEUE_REQ
);
1267 ahd_platform_set_tags(struct ahd_softc
*ahd
, struct ahd_devinfo
*devinfo
,
1270 struct scsi_target
*starget
;
1271 struct ahd_linux_target
*targ
;
1272 struct ahd_linux_device
*dev
;
1273 struct scsi_device
*sdev
;
1277 starget
= ahd
->platform_data
->starget
[devinfo
->target
];
1278 targ
= scsi_transport_target_data(starget
);
1279 BUG_ON(targ
== NULL
);
1280 sdev
= targ
->sdev
[devinfo
->lun
];
1284 dev
= scsi_transport_device_data(sdev
);
1288 was_queuing
= dev
->flags
& (AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
);
1291 case AHD_QUEUE_NONE
:
1294 case AHD_QUEUE_BASIC
:
1295 now_queuing
= AHD_DEV_Q_BASIC
;
1297 case AHD_QUEUE_TAGGED
:
1298 now_queuing
= AHD_DEV_Q_TAGGED
;
1301 if ((dev
->flags
& AHD_DEV_FREEZE_TIL_EMPTY
) == 0
1302 && (was_queuing
!= now_queuing
)
1303 && (dev
->active
!= 0)) {
1304 dev
->flags
|= AHD_DEV_FREEZE_TIL_EMPTY
;
1308 dev
->flags
&= ~(AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
|AHD_DEV_PERIODIC_OTAG
);
1312 usertags
= ahd_linux_user_tagdepth(ahd
, devinfo
);
1315 * Start out agressively and allow our
1316 * dynamic queue depth algorithm to take
1319 dev
->maxtags
= usertags
;
1320 dev
->openings
= dev
->maxtags
- dev
->active
;
1322 if (dev
->maxtags
== 0) {
1324 * Queueing is disabled by the user.
1327 } else if (alg
== AHD_QUEUE_TAGGED
) {
1328 dev
->flags
|= AHD_DEV_Q_TAGGED
;
1329 if (aic79xx_periodic_otag
!= 0)
1330 dev
->flags
|= AHD_DEV_PERIODIC_OTAG
;
1332 dev
->flags
|= AHD_DEV_Q_BASIC
;
1334 /* We can only have one opening. */
1336 dev
->openings
= 1 - dev
->active
;
1339 switch ((dev
->flags
& (AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
))) {
1340 case AHD_DEV_Q_BASIC
:
1341 scsi_adjust_queue_depth(sdev
,
1343 dev
->openings
+ dev
->active
);
1345 case AHD_DEV_Q_TAGGED
:
1346 scsi_adjust_queue_depth(sdev
,
1348 dev
->openings
+ dev
->active
);
1352 * We allow the OS to queue 2 untagged transactions to
1353 * us at any time even though we can only execute them
1354 * serially on the controller/device. This should
1355 * remove some latency.
1357 scsi_adjust_queue_depth(sdev
,
1365 ahd_platform_abort_scbs(struct ahd_softc
*ahd
, int target
, char channel
,
1366 int lun
, u_int tag
, role_t role
, uint32_t status
)
1372 ahd_linux_user_tagdepth(struct ahd_softc
*ahd
, struct ahd_devinfo
*devinfo
)
1374 static int warned_user
;
1378 if ((ahd
->user_discenable
& devinfo
->target_mask
) != 0) {
1379 if (ahd
->unit
>= NUM_ELEMENTS(aic79xx_tag_info
)) {
1381 if (warned_user
== 0) {
1383 "aic79xx: WARNING: Insufficient tag_info instances\n"
1384 "aic79xx: for installed controllers. Using defaults\n"
1385 "aic79xx: Please update the aic79xx_tag_info array in\n"
1386 "aic79xx: the aic79xx_osm.c source file.\n");
1389 tags
= AHD_MAX_QUEUE
;
1391 adapter_tag_info_t
*tag_info
;
1393 tag_info
= &aic79xx_tag_info
[ahd
->unit
];
1394 tags
= tag_info
->tag_commands
[devinfo
->target_offset
];
1395 if (tags
> AHD_MAX_QUEUE
)
1396 tags
= AHD_MAX_QUEUE
;
1403 * Determines the queue depth for a given device.
1406 ahd_linux_device_queue_depth(struct scsi_device
*sdev
)
1408 struct ahd_devinfo devinfo
;
1410 struct ahd_softc
*ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
1412 ahd_compile_devinfo(&devinfo
,
1414 sdev
->sdev_target
->id
, sdev
->lun
,
1415 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1417 tags
= ahd_linux_user_tagdepth(ahd
, &devinfo
);
1418 if (tags
!= 0 && sdev
->tagged_supported
!= 0) {
1420 ahd_set_tags(ahd
, &devinfo
, AHD_QUEUE_TAGGED
);
1421 ahd_print_devinfo(ahd
, &devinfo
);
1422 printf("Tagged Queuing enabled. Depth %d\n", tags
);
1424 ahd_set_tags(ahd
, &devinfo
, AHD_QUEUE_NONE
);
1429 ahd_linux_run_command(struct ahd_softc
*ahd
, struct ahd_linux_device
*dev
,
1430 struct scsi_cmnd
*cmd
)
1433 struct hardware_scb
*hscb
;
1434 struct ahd_initiator_tinfo
*tinfo
;
1435 struct ahd_tmode_tstate
*tstate
;
1440 * Get an scb to use.
1442 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
1443 cmd
->device
->id
, &tstate
);
1444 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) == 0
1445 || (tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0) {
1446 col_idx
= AHD_NEVER_COL_IDX
;
1448 col_idx
= AHD_BUILD_COL_IDX(cmd
->device
->id
,
1451 if ((scb
= ahd_get_scb(ahd
, col_idx
)) == NULL
) {
1452 ahd
->flags
|= AHD_RESOURCE_SHORTAGE
;
1453 return SCSI_MLQUEUE_HOST_BUSY
;
1457 scb
->platform_data
->dev
= dev
;
1459 cmd
->host_scribble
= (char *)scb
;
1462 * Fill out basics of the HSCB.
1465 hscb
->scsiid
= BUILD_SCSIID(ahd
, cmd
);
1466 hscb
->lun
= cmd
->device
->lun
;
1467 scb
->hscb
->task_management
= 0;
1468 mask
= SCB_GET_TARGET_MASK(ahd
, scb
);
1470 if ((ahd
->user_discenable
& mask
) != 0)
1471 hscb
->control
|= DISCENB
;
1473 if ((tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0)
1474 scb
->flags
|= SCB_PACKETIZED
;
1476 if ((tstate
->auto_negotiate
& mask
) != 0) {
1477 scb
->flags
|= SCB_AUTO_NEGOTIATE
;
1478 scb
->hscb
->control
|= MK_MESSAGE
;
1481 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) != 0) {
1483 uint8_t tag_msgs
[2];
1485 msg_bytes
= scsi_populate_tag_msg(cmd
, tag_msgs
);
1486 if (msg_bytes
&& tag_msgs
[0] != MSG_SIMPLE_TASK
) {
1487 hscb
->control
|= tag_msgs
[0];
1488 if (tag_msgs
[0] == MSG_ORDERED_TASK
)
1489 dev
->commands_since_idle_or_otag
= 0;
1491 if (dev
->commands_since_idle_or_otag
== AHD_OTAG_THRESH
1492 && (dev
->flags
& AHD_DEV_Q_TAGGED
) != 0) {
1493 hscb
->control
|= MSG_ORDERED_TASK
;
1494 dev
->commands_since_idle_or_otag
= 0;
1496 hscb
->control
|= MSG_SIMPLE_TASK
;
1500 hscb
->cdb_len
= cmd
->cmd_len
;
1501 memcpy(hscb
->shared_data
.idata
.cdb
, cmd
->cmnd
, hscb
->cdb_len
);
1503 scb
->platform_data
->xfer_len
= 0;
1504 ahd_set_residual(scb
, 0);
1505 ahd_set_sense_residual(scb
, 0);
1507 if (cmd
->use_sg
!= 0) {
1509 struct scatterlist
*cur_seg
;
1513 cur_seg
= (struct scatterlist
*)cmd
->request_buffer
;
1514 dir
= cmd
->sc_data_direction
;
1515 nseg
= pci_map_sg(ahd
->dev_softc
, cur_seg
,
1517 scb
->platform_data
->xfer_len
= 0;
1518 for (sg
= scb
->sg_list
; nseg
> 0; nseg
--, cur_seg
++) {
1522 addr
= sg_dma_address(cur_seg
);
1523 len
= sg_dma_len(cur_seg
);
1524 scb
->platform_data
->xfer_len
+= len
;
1525 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
, len
,
1528 } else if (cmd
->request_bufflen
!= 0) {
1534 dir
= cmd
->sc_data_direction
;
1535 addr
= pci_map_single(ahd
->dev_softc
,
1536 cmd
->request_buffer
,
1537 cmd
->request_bufflen
, dir
);
1538 scb
->platform_data
->xfer_len
= cmd
->request_bufflen
;
1539 scb
->platform_data
->buf_busaddr
= addr
;
1540 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
,
1541 cmd
->request_bufflen
, /*last*/TRUE
);
1544 LIST_INSERT_HEAD(&ahd
->pending_scbs
, scb
, pending_links
);
1547 dev
->commands_issued
++;
1549 if ((dev
->flags
& AHD_DEV_PERIODIC_OTAG
) != 0)
1550 dev
->commands_since_idle_or_otag
++;
1551 scb
->flags
|= SCB_ACTIVE
;
1552 ahd_queue_scb(ahd
, scb
);
1558 * SCSI controller interrupt handler.
1561 ahd_linux_isr(int irq
, void *dev_id
, struct pt_regs
* regs
)
1563 struct ahd_softc
*ahd
;
1567 ahd
= (struct ahd_softc
*) dev_id
;
1568 ahd_lock(ahd
, &flags
);
1569 ours
= ahd_intr(ahd
);
1570 ahd_unlock(ahd
, &flags
);
1571 return IRQ_RETVAL(ours
);
1575 ahd_platform_flushwork(struct ahd_softc
*ahd
)
1581 ahd_send_async(struct ahd_softc
*ahd
, char channel
,
1582 u_int target
, u_int lun
, ac_code code
, void *arg
)
1585 case AC_TRANSFER_NEG
:
1588 struct scsi_target
*starget
;
1589 struct ahd_linux_target
*targ
;
1590 struct info_str info
;
1591 struct ahd_initiator_tinfo
*tinfo
;
1592 struct ahd_tmode_tstate
*tstate
;
1593 unsigned int target_ppr_options
;
1595 BUG_ON(target
== CAM_TARGET_WILDCARD
);
1598 info
.length
= sizeof(buf
);
1601 tinfo
= ahd_fetch_transinfo(ahd
, channel
, ahd
->our_id
,
1605 * Don't bother reporting results while
1606 * negotiations are still pending.
1608 if (tinfo
->curr
.period
!= tinfo
->goal
.period
1609 || tinfo
->curr
.width
!= tinfo
->goal
.width
1610 || tinfo
->curr
.offset
!= tinfo
->goal
.offset
1611 || tinfo
->curr
.ppr_options
!= tinfo
->goal
.ppr_options
)
1612 if (bootverbose
== 0)
1616 * Don't bother reporting results that
1617 * are identical to those last reported.
1619 starget
= ahd
->platform_data
->starget
[target
];
1620 targ
= scsi_transport_target_data(starget
);
1624 target_ppr_options
=
1625 (spi_dt(starget
) ? MSG_EXT_PPR_DT_REQ
: 0)
1626 + (spi_qas(starget
) ? MSG_EXT_PPR_QAS_REQ
: 0)
1627 + (spi_iu(starget
) ? MSG_EXT_PPR_IU_REQ
: 0);
1629 if (tinfo
->curr
.period
== spi_period(starget
)
1630 && tinfo
->curr
.width
== spi_width(starget
)
1631 && tinfo
->curr
.offset
== spi_offset(starget
)
1632 && tinfo
->curr
.ppr_options
== target_ppr_options
)
1633 if (bootverbose
== 0)
1636 spi_period(starget
) = tinfo
->curr
.period
;
1637 spi_width(starget
) = tinfo
->curr
.width
;
1638 spi_offset(starget
) = tinfo
->curr
.offset
;
1639 spi_dt(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_DT_REQ
? 1 : 0;
1640 spi_qas(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_QAS_REQ
? 1 : 0;
1641 spi_iu(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
? 1 : 0;
1642 spi_display_xfer_agreement(starget
);
1647 WARN_ON(lun
!= CAM_LUN_WILDCARD
);
1648 scsi_report_device_reset(ahd
->platform_data
->host
,
1649 channel
- 'A', target
);
1653 if (ahd
->platform_data
->host
!= NULL
) {
1654 scsi_report_bus_reset(ahd
->platform_data
->host
,
1659 panic("ahd_send_async: Unexpected async event");
1664 * Calls the higher level scsi done function and frees the scb.
1667 ahd_done(struct ahd_softc
*ahd
, struct scb
*scb
)
1669 struct scsi_cmnd
*cmd
;
1670 struct ahd_linux_device
*dev
;
1672 if ((scb
->flags
& SCB_ACTIVE
) == 0) {
1673 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb
));
1674 ahd_dump_card_state(ahd
);
1675 panic("Stopping for safety");
1677 LIST_REMOVE(scb
, pending_links
);
1679 dev
= scb
->platform_data
->dev
;
1682 if ((cmd
->result
& (CAM_DEV_QFRZN
<< 16)) != 0) {
1683 cmd
->result
&= ~(CAM_DEV_QFRZN
<< 16);
1686 ahd_linux_unmap_scb(ahd
, scb
);
1689 * Guard against stale sense data.
1690 * The Linux mid-layer assumes that sense
1691 * was retrieved anytime the first byte of
1692 * the sense buffer looks "sane".
1694 cmd
->sense_buffer
[0] = 0;
1695 if (ahd_get_transaction_status(scb
) == CAM_REQ_INPROG
) {
1696 uint32_t amount_xferred
;
1699 ahd_get_transfer_length(scb
) - ahd_get_residual(scb
);
1700 if ((scb
->flags
& SCB_TRANSMISSION_ERROR
) != 0) {
1702 if ((ahd_debug
& AHD_SHOW_MISC
) != 0) {
1703 ahd_print_path(ahd
, scb
);
1704 printf("Set CAM_UNCOR_PARITY\n");
1707 ahd_set_transaction_status(scb
, CAM_UNCOR_PARITY
);
1708 #ifdef AHD_REPORT_UNDERFLOWS
1710 * This code is disabled by default as some
1711 * clients of the SCSI system do not properly
1712 * initialize the underflow parameter. This
1713 * results in spurious termination of commands
1714 * that complete as expected (e.g. underflow is
1715 * allowed as command can return variable amounts
1718 } else if (amount_xferred
< scb
->io_ctx
->underflow
) {
1721 ahd_print_path(ahd
, scb
);
1723 for (i
= 0; i
< scb
->io_ctx
->cmd_len
; i
++)
1724 printf(" 0x%x", scb
->io_ctx
->cmnd
[i
]);
1726 ahd_print_path(ahd
, scb
);
1727 printf("Saw underflow (%ld of %ld bytes). "
1728 "Treated as error\n",
1729 ahd_get_residual(scb
),
1730 ahd_get_transfer_length(scb
));
1731 ahd_set_transaction_status(scb
, CAM_DATA_RUN_ERR
);
1734 ahd_set_transaction_status(scb
, CAM_REQ_CMP
);
1736 } else if (ahd_get_transaction_status(scb
) == CAM_SCSI_STATUS_ERROR
) {
1737 ahd_linux_handle_scsi_status(ahd
, cmd
->device
, scb
);
1740 if (dev
->openings
== 1
1741 && ahd_get_transaction_status(scb
) == CAM_REQ_CMP
1742 && ahd_get_scsi_status(scb
) != SCSI_STATUS_QUEUE_FULL
)
1743 dev
->tag_success_count
++;
1745 * Some devices deal with temporary internal resource
1746 * shortages by returning queue full. When the queue
1747 * full occurrs, we throttle back. Slowly try to get
1748 * back to our previous queue depth.
1750 if ((dev
->openings
+ dev
->active
) < dev
->maxtags
1751 && dev
->tag_success_count
> AHD_TAG_SUCCESS_INTERVAL
) {
1752 dev
->tag_success_count
= 0;
1756 if (dev
->active
== 0)
1757 dev
->commands_since_idle_or_otag
= 0;
1759 if ((scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
1760 printf("Recovery SCB completes\n");
1761 if (ahd_get_transaction_status(scb
) == CAM_BDR_SENT
1762 || ahd_get_transaction_status(scb
) == CAM_REQ_ABORTED
)
1763 ahd_set_transaction_status(scb
, CAM_CMD_TIMEOUT
);
1764 if ((ahd
->platform_data
->flags
& AHD_SCB_UP_EH_SEM
) != 0) {
1765 ahd
->platform_data
->flags
&= ~AHD_SCB_UP_EH_SEM
;
1766 up(&ahd
->platform_data
->eh_sem
);
1770 ahd_free_scb(ahd
, scb
);
1771 ahd_linux_queue_cmd_complete(ahd
, cmd
);
1775 ahd_linux_handle_scsi_status(struct ahd_softc
*ahd
,
1776 struct scsi_device
*sdev
, struct scb
*scb
)
1778 struct ahd_devinfo devinfo
;
1779 struct ahd_linux_device
*dev
= scsi_transport_device_data(sdev
);
1781 ahd_compile_devinfo(&devinfo
,
1783 sdev
->sdev_target
->id
, sdev
->lun
,
1784 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1788 * We don't currently trust the mid-layer to
1789 * properly deal with queue full or busy. So,
1790 * when one occurs, we tell the mid-layer to
1791 * unconditionally requeue the command to us
1792 * so that we can retry it ourselves. We also
1793 * implement our own throttling mechanism so
1794 * we don't clobber the device with too many
1797 switch (ahd_get_scsi_status(scb
)) {
1800 case SCSI_STATUS_CHECK_COND
:
1801 case SCSI_STATUS_CMD_TERMINATED
:
1803 struct scsi_cmnd
*cmd
;
1806 * Copy sense information to the OS's cmd
1807 * structure if it is available.
1810 if ((scb
->flags
& (SCB_SENSE
|SCB_PKT_SENSE
)) != 0) {
1811 struct scsi_status_iu_header
*siu
;
1815 if (scb
->flags
& SCB_SENSE
) {
1816 sense_size
= MIN(sizeof(struct scsi_sense_data
)
1817 - ahd_get_sense_residual(scb
),
1818 sizeof(cmd
->sense_buffer
));
1822 * Copy only the sense data into the provided
1825 siu
= (struct scsi_status_iu_header
*)
1827 sense_size
= MIN(scsi_4btoul(siu
->sense_length
),
1828 sizeof(cmd
->sense_buffer
));
1829 sense_offset
= SIU_SENSE_OFFSET(siu
);
1832 memset(cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
1833 memcpy(cmd
->sense_buffer
,
1834 ahd_get_sense_buf(ahd
, scb
)
1835 + sense_offset
, sense_size
);
1836 cmd
->result
|= (DRIVER_SENSE
<< 24);
1839 if (ahd_debug
& AHD_SHOW_SENSE
) {
1842 printf("Copied %d bytes of sense data at %d:",
1843 sense_size
, sense_offset
);
1844 for (i
= 0; i
< sense_size
; i
++) {
1847 printf("0x%x ", cmd
->sense_buffer
[i
]);
1855 case SCSI_STATUS_QUEUE_FULL
:
1857 * By the time the core driver has returned this
1858 * command, all other commands that were queued
1859 * to us but not the device have been returned.
1860 * This ensures that dev->active is equal to
1861 * the number of commands actually queued to
1864 dev
->tag_success_count
= 0;
1865 if (dev
->active
!= 0) {
1867 * Drop our opening count to the number
1868 * of commands currently outstanding.
1872 if ((ahd_debug
& AHD_SHOW_QFULL
) != 0) {
1873 ahd_print_path(ahd
, scb
);
1874 printf("Dropping tag count to %d\n",
1878 if (dev
->active
== dev
->tags_on_last_queuefull
) {
1880 dev
->last_queuefull_same_count
++;
1882 * If we repeatedly see a queue full
1883 * at the same queue depth, this
1884 * device has a fixed number of tag
1885 * slots. Lock in this tag depth
1886 * so we stop seeing queue fulls from
1889 if (dev
->last_queuefull_same_count
1890 == AHD_LOCK_TAGS_COUNT
) {
1891 dev
->maxtags
= dev
->active
;
1892 ahd_print_path(ahd
, scb
);
1893 printf("Locking max tag count at %d\n",
1897 dev
->tags_on_last_queuefull
= dev
->active
;
1898 dev
->last_queuefull_same_count
= 0;
1900 ahd_set_transaction_status(scb
, CAM_REQUEUE_REQ
);
1901 ahd_set_scsi_status(scb
, SCSI_STATUS_OK
);
1902 ahd_platform_set_tags(ahd
, &devinfo
,
1903 (dev
->flags
& AHD_DEV_Q_BASIC
)
1904 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1908 * Drop down to a single opening, and treat this
1909 * as if the target returned BUSY SCSI status.
1912 ahd_platform_set_tags(ahd
, &devinfo
,
1913 (dev
->flags
& AHD_DEV_Q_BASIC
)
1914 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1915 ahd_set_scsi_status(scb
, SCSI_STATUS_BUSY
);
1920 ahd_linux_queue_cmd_complete(struct ahd_softc
*ahd
, struct scsi_cmnd
*cmd
)
1923 * Map CAM error codes into Linux Error codes. We
1924 * avoid the conversion so that the DV code has the
1925 * full error information available when making
1926 * state change decisions.
1932 status
= ahd_cmd_get_transaction_status(cmd
);
1934 case CAM_REQ_INPROG
:
1936 case CAM_SCSI_STATUS_ERROR
:
1937 new_status
= DID_OK
;
1939 case CAM_REQ_ABORTED
:
1940 new_status
= DID_ABORT
;
1943 new_status
= DID_BUS_BUSY
;
1945 case CAM_REQ_INVALID
:
1946 case CAM_PATH_INVALID
:
1947 new_status
= DID_BAD_TARGET
;
1949 case CAM_SEL_TIMEOUT
:
1950 new_status
= DID_NO_CONNECT
;
1952 case CAM_SCSI_BUS_RESET
:
1954 new_status
= DID_RESET
;
1956 case CAM_UNCOR_PARITY
:
1957 new_status
= DID_PARITY
;
1959 case CAM_CMD_TIMEOUT
:
1960 new_status
= DID_TIME_OUT
;
1963 case CAM_REQ_CMP_ERR
:
1964 case CAM_AUTOSENSE_FAIL
:
1966 case CAM_DATA_RUN_ERR
:
1967 case CAM_UNEXP_BUSFREE
:
1968 case CAM_SEQUENCE_FAIL
:
1969 case CAM_CCB_LEN_ERR
:
1970 case CAM_PROVIDE_FAIL
:
1971 case CAM_REQ_TERMIO
:
1972 case CAM_UNREC_HBA_ERROR
:
1973 case CAM_REQ_TOO_BIG
:
1974 new_status
= DID_ERROR
;
1976 case CAM_REQUEUE_REQ
:
1977 new_status
= DID_REQUEUE
;
1980 /* We should never get here */
1981 new_status
= DID_ERROR
;
1985 ahd_cmd_set_transaction_status(cmd
, new_status
);
1988 cmd
->scsi_done(cmd
);
1992 ahd_linux_sem_timeout(u_long arg
)
1994 struct ahd_softc
*ahd
;
1997 ahd
= (struct ahd_softc
*)arg
;
2000 if ((ahd
->platform_data
->flags
& AHD_SCB_UP_EH_SEM
) != 0) {
2001 ahd
->platform_data
->flags
&= ~AHD_SCB_UP_EH_SEM
;
2002 up(&ahd
->platform_data
->eh_sem
);
2004 ahd_unlock(ahd
, &s
);
2008 ahd_freeze_simq(struct ahd_softc
*ahd
)
2010 ahd
->platform_data
->qfrozen
++;
2011 if (ahd
->platform_data
->qfrozen
== 1) {
2012 scsi_block_requests(ahd
->platform_data
->host
);
2013 ahd_platform_abort_scbs(ahd
, CAM_TARGET_WILDCARD
, ALL_CHANNELS
,
2014 CAM_LUN_WILDCARD
, SCB_LIST_NULL
,
2015 ROLE_INITIATOR
, CAM_REQUEUE_REQ
);
2020 ahd_release_simq(struct ahd_softc
*ahd
)
2027 if (ahd
->platform_data
->qfrozen
> 0)
2028 ahd
->platform_data
->qfrozen
--;
2029 if (ahd
->platform_data
->qfrozen
== 0) {
2032 ahd_unlock(ahd
, &s
);
2034 * There is still a race here. The mid-layer
2035 * should keep its own freeze count and use
2036 * a bottom half handler to run the queues
2037 * so we can unblock with our own lock held.
2040 scsi_unblock_requests(ahd
->platform_data
->host
);
2044 ahd_linux_queue_recovery_cmd(struct scsi_cmnd
*cmd
, scb_flag flag
)
2046 struct ahd_softc
*ahd
;
2047 struct ahd_linux_device
*dev
;
2048 struct scb
*pending_scb
;
2050 u_int active_scbptr
;
2059 ahd_mode_state saved_modes
;
2064 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
2066 printf("%s:%d:%d:%d: Attempting to queue a%s message:",
2067 ahd_name(ahd
), cmd
->device
->channel
,
2068 cmd
->device
->id
, cmd
->device
->lun
,
2069 flag
== SCB_ABORT
? "n ABORT" : " TARGET RESET");
2072 for (cdb_byte
= 0; cdb_byte
< cmd
->cmd_len
; cdb_byte
++)
2073 printf(" 0x%x", cmd
->cmnd
[cdb_byte
]);
2076 spin_lock_irq(&ahd
->platform_data
->spin_lock
);
2079 * First determine if we currently own this command.
2080 * Start by searching the device queue. If not found
2081 * there, check the pending_scb list. If not found
2082 * at all, and the system wanted us to just abort the
2083 * command, return success.
2085 dev
= scsi_transport_device_data(cmd
->device
);
2089 * No target device for this command exists,
2090 * so we must not still own the command.
2092 printf("%s:%d:%d:%d: Is not an active device\n",
2093 ahd_name(ahd
), cmd
->device
->channel
, cmd
->device
->id
,
2100 * See if we can find a matching cmd in the pending list.
2102 LIST_FOREACH(pending_scb
, &ahd
->pending_scbs
, pending_links
) {
2103 if (pending_scb
->io_ctx
== cmd
)
2107 if (pending_scb
== NULL
&& flag
== SCB_DEVICE_RESET
) {
2109 /* Any SCB for this device will do for a target reset */
2110 LIST_FOREACH(pending_scb
, &ahd
->pending_scbs
, pending_links
) {
2111 if (ahd_match_scb(ahd
, pending_scb
, cmd
->device
->id
,
2112 cmd
->device
->channel
+ 'A',
2114 SCB_LIST_NULL
, ROLE_INITIATOR
) == 0)
2119 if (pending_scb
== NULL
) {
2120 printf("%s:%d:%d:%d: Command not found\n",
2121 ahd_name(ahd
), cmd
->device
->channel
, cmd
->device
->id
,
2126 if ((pending_scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
2128 * We can't queue two recovery actions using the same SCB
2135 * Ensure that the card doesn't do anything
2136 * behind our back. Also make sure that we
2137 * didn't "just" miss an interrupt that would
2140 was_paused
= ahd_is_paused(ahd
);
2141 ahd_pause_and_flushwork(ahd
);
2144 if ((pending_scb
->flags
& SCB_ACTIVE
) == 0) {
2145 printf("%s:%d:%d:%d: Command already completed\n",
2146 ahd_name(ahd
), cmd
->device
->channel
, cmd
->device
->id
,
2151 printf("%s: At time of recovery, card was %spaused\n",
2152 ahd_name(ahd
), was_paused
? "" : "not ");
2153 ahd_dump_card_state(ahd
);
2155 disconnected
= TRUE
;
2156 if (flag
== SCB_ABORT
) {
2157 if (ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2158 cmd
->device
->channel
+ 'A',
2160 pending_scb
->hscb
->tag
,
2161 ROLE_INITIATOR
, CAM_REQ_ABORTED
,
2162 SEARCH_COMPLETE
) > 0) {
2163 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
2164 ahd_name(ahd
), cmd
->device
->channel
,
2165 cmd
->device
->id
, cmd
->device
->lun
);
2169 } else if (ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2170 cmd
->device
->channel
+ 'A',
2171 cmd
->device
->lun
, pending_scb
->hscb
->tag
,
2172 ROLE_INITIATOR
, /*status*/0,
2173 SEARCH_COUNT
) > 0) {
2174 disconnected
= FALSE
;
2177 saved_modes
= ahd_save_modes(ahd
);
2178 ahd_set_modes(ahd
, AHD_MODE_SCSI
, AHD_MODE_SCSI
);
2179 last_phase
= ahd_inb(ahd
, LASTPHASE
);
2180 saved_scbptr
= ahd_get_scbptr(ahd
);
2181 active_scbptr
= saved_scbptr
;
2182 if (disconnected
&& (ahd_inb(ahd
, SEQ_FLAGS
) & NOT_IDENTIFIED
) == 0) {
2183 struct scb
*bus_scb
;
2185 bus_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2186 if (bus_scb
== pending_scb
)
2187 disconnected
= FALSE
;
2188 else if (flag
!= SCB_ABORT
2189 && ahd_inb(ahd
, SAVED_SCSIID
) == pending_scb
->hscb
->scsiid
2190 && ahd_inb(ahd
, SAVED_LUN
) == SCB_GET_LUN(pending_scb
))
2191 disconnected
= FALSE
;
2195 * At this point, pending_scb is the scb associated with the
2196 * passed in command. That command is currently active on the
2197 * bus or is in the disconnected state.
2199 saved_scsiid
= ahd_inb(ahd
, SAVED_SCSIID
);
2200 if (last_phase
!= P_BUSFREE
2201 && (SCB_GET_TAG(pending_scb
) == active_scbptr
2202 || (flag
== SCB_DEVICE_RESET
2203 && SCSIID_TARGET(ahd
, saved_scsiid
) == cmd
->device
->id
))) {
2206 * We're active on the bus, so assert ATN
2207 * and hope that the target responds.
2209 pending_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2210 pending_scb
->flags
|= SCB_RECOVERY_SCB
|flag
;
2211 ahd_outb(ahd
, MSG_OUT
, HOST_MSG
);
2212 ahd_outb(ahd
, SCSISIGO
, last_phase
|ATNO
);
2213 printf("%s:%d:%d:%d: Device is active, asserting ATN\n",
2214 ahd_name(ahd
), cmd
->device
->channel
,
2215 cmd
->device
->id
, cmd
->device
->lun
);
2217 } else if (disconnected
) {
2220 * Actually re-queue this SCB in an attempt
2221 * to select the device before it reconnects.
2223 pending_scb
->flags
|= SCB_RECOVERY_SCB
|SCB_ABORT
;
2224 ahd_set_scbptr(ahd
, SCB_GET_TAG(pending_scb
));
2225 pending_scb
->hscb
->cdb_len
= 0;
2226 pending_scb
->hscb
->task_attribute
= 0;
2227 pending_scb
->hscb
->task_management
= SIU_TASKMGMT_ABORT_TASK
;
2229 if ((pending_scb
->flags
& SCB_PACKETIZED
) != 0) {
2231 * Mark the SCB has having an outstanding
2232 * task management function. Should the command
2233 * complete normally before the task management
2234 * function can be sent, the host will be notified
2235 * to abort our requeued SCB.
2237 ahd_outb(ahd
, SCB_TASK_MANAGEMENT
,
2238 pending_scb
->hscb
->task_management
);
2241 * If non-packetized, set the MK_MESSAGE control
2242 * bit indicating that we desire to send a message.
2243 * We also set the disconnected flag since there is
2244 * no guarantee that our SCB control byte matches
2245 * the version on the card. We don't want the
2246 * sequencer to abort the command thinking an
2247 * unsolicited reselection occurred.
2249 pending_scb
->hscb
->control
|= MK_MESSAGE
|DISCONNECTED
;
2252 * The sequencer will never re-reference the
2253 * in-core SCB. To make sure we are notified
2254 * during reslection, set the MK_MESSAGE flag in
2255 * the card's copy of the SCB.
2257 ahd_outb(ahd
, SCB_CONTROL
,
2258 ahd_inb(ahd
, SCB_CONTROL
)|MK_MESSAGE
);
2262 * Clear out any entries in the QINFIFO first
2263 * so we are the next SCB for this target
2266 ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2267 cmd
->device
->channel
+ 'A', cmd
->device
->lun
,
2268 SCB_LIST_NULL
, ROLE_INITIATOR
,
2269 CAM_REQUEUE_REQ
, SEARCH_COMPLETE
);
2270 ahd_qinfifo_requeue_tail(ahd
, pending_scb
);
2271 ahd_set_scbptr(ahd
, saved_scbptr
);
2272 ahd_print_path(ahd
, pending_scb
);
2273 printf("Device is disconnected, re-queuing SCB\n");
2276 printf("%s:%d:%d:%d: Unable to deliver message\n",
2277 ahd_name(ahd
), cmd
->device
->channel
,
2278 cmd
->device
->id
, cmd
->device
->lun
);
2285 * Our assumption is that if we don't have the command, no
2286 * recovery action was required, so we return success. Again,
2287 * the semantics of the mid-layer recovery engine are not
2288 * well defined, so this may change in time.
2295 struct timer_list timer
;
2298 ahd
->platform_data
->flags
|= AHD_SCB_UP_EH_SEM
;
2299 spin_unlock_irq(&ahd
->platform_data
->spin_lock
);
2301 timer
.data
= (u_long
)ahd
;
2302 timer
.expires
= jiffies
+ (5 * HZ
);
2303 timer
.function
= ahd_linux_sem_timeout
;
2305 printf("Recovery code sleeping\n");
2306 down(&ahd
->platform_data
->eh_sem
);
2307 printf("Recovery code awake\n");
2308 ret
= del_timer_sync(&timer
);
2310 printf("Timer Expired\n");
2313 spin_lock_irq(&ahd
->platform_data
->spin_lock
);
2315 spin_unlock_irq(&ahd
->platform_data
->spin_lock
);
2319 static void ahd_linux_exit(void);
2321 static void ahd_linux_set_xferflags(struct scsi_target
*starget
, unsigned int ppr_options
, unsigned int period
)
2323 spi_qas(starget
) = (ppr_options
& MSG_EXT_PPR_QAS_REQ
)? 1 : 0;
2324 spi_dt(starget
) = (ppr_options
& MSG_EXT_PPR_DT_REQ
)? 1 : 0;
2325 spi_iu(starget
) = (ppr_options
& MSG_EXT_PPR_IU_REQ
) ? 1 : 0;
2326 spi_rd_strm(starget
) = (ppr_options
& MSG_EXT_PPR_RD_STRM
) ? 1 : 0;
2327 spi_wr_flow(starget
) = (ppr_options
& MSG_EXT_PPR_WR_FLOW
) ? 1 : 0;
2328 spi_pcomp_en(starget
) = (ppr_options
& MSG_EXT_PPR_PCOMP_EN
) ? 1 : 0;
2329 spi_rti(starget
) = (ppr_options
& MSG_EXT_PPR_RTI
) ? 1 : 0;
2330 spi_period(starget
) = period
;
2333 static void ahd_linux_set_width(struct scsi_target
*starget
, int width
)
2335 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2336 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2337 struct ahd_devinfo devinfo
;
2338 unsigned long flags
;
2340 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2341 starget
->channel
+ 'A', ROLE_INITIATOR
);
2342 ahd_lock(ahd
, &flags
);
2343 ahd_set_width(ahd
, &devinfo
, width
, AHD_TRANS_GOAL
, FALSE
);
2344 ahd_unlock(ahd
, &flags
);
2347 static void ahd_linux_set_period(struct scsi_target
*starget
, int period
)
2349 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2350 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2351 struct ahd_tmode_tstate
*tstate
;
2352 struct ahd_initiator_tinfo
*tinfo
2353 = ahd_fetch_transinfo(ahd
,
2354 starget
->channel
+ 'A',
2355 shost
->this_id
, starget
->id
, &tstate
);
2356 struct ahd_devinfo devinfo
;
2357 unsigned int ppr_options
= tinfo
->goal
.ppr_options
;
2359 unsigned long flags
;
2360 unsigned long offset
= tinfo
->goal
.offset
;
2363 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2364 printf("%s: set period to %d\n", ahd_name(ahd
), period
);
2367 offset
= MAX_OFFSET
;
2372 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2374 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2377 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2379 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2380 starget
->channel
+ 'A', ROLE_INITIATOR
);
2382 /* all PPR requests apart from QAS require wide transfers */
2383 if (ppr_options
& ~MSG_EXT_PPR_QAS_REQ
) {
2384 if (spi_width(starget
) == 0)
2385 ppr_options
&= MSG_EXT_PPR_QAS_REQ
;
2388 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2389 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2391 ahd_linux_set_xferflags(starget
, ppr_options
, period
);
2393 ahd_lock(ahd
, &flags
);
2394 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
,
2395 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2396 ahd_unlock(ahd
, &flags
);
2399 static void ahd_linux_set_offset(struct scsi_target
*starget
, int offset
)
2401 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2402 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2403 struct ahd_tmode_tstate
*tstate
;
2404 struct ahd_initiator_tinfo
*tinfo
2405 = ahd_fetch_transinfo(ahd
,
2406 starget
->channel
+ 'A',
2407 shost
->this_id
, starget
->id
, &tstate
);
2408 struct ahd_devinfo devinfo
;
2409 unsigned int ppr_options
= 0;
2410 unsigned int period
= 0;
2411 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2412 unsigned long flags
;
2415 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2416 printf("%s: set offset to %d\n", ahd_name(ahd
), offset
);
2419 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2420 starget
->channel
+ 'A', ROLE_INITIATOR
);
2422 period
= tinfo
->goal
.period
;
2423 ppr_options
= tinfo
->goal
.ppr_options
;
2424 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2425 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2427 ahd_linux_set_xferflags(starget
, ppr_options
, period
);
2429 ahd_lock(ahd
, &flags
);
2430 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
, ppr_options
,
2431 AHD_TRANS_GOAL
, FALSE
);
2432 ahd_unlock(ahd
, &flags
);
2435 static void ahd_linux_set_dt(struct scsi_target
*starget
, int dt
)
2437 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2438 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2439 struct ahd_tmode_tstate
*tstate
;
2440 struct ahd_initiator_tinfo
*tinfo
2441 = ahd_fetch_transinfo(ahd
,
2442 starget
->channel
+ 'A',
2443 shost
->this_id
, starget
->id
, &tstate
);
2444 struct ahd_devinfo devinfo
;
2445 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2446 & ~MSG_EXT_PPR_DT_REQ
;
2447 unsigned int period
= tinfo
->goal
.period
;
2448 unsigned long flags
;
2451 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2452 printf("%s: %s DT\n", ahd_name(ahd
),
2453 dt
? "enabling" : "disabling");
2456 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2458 period
= 9; /* at least 12.5ns for DT */
2461 period
= 10; /* If resetting DT, period must be >= 25ns */
2462 /* IU is invalid without DT set */
2463 ppr_options
&= ~MSG_EXT_PPR_IU_REQ
;
2465 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2466 starget
->channel
+ 'A', ROLE_INITIATOR
);
2467 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2468 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2470 ahd_linux_set_xferflags(starget
, ppr_options
, period
);
2472 ahd_lock(ahd
, &flags
);
2473 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2474 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2475 ahd_unlock(ahd
, &flags
);
2478 static void ahd_linux_set_qas(struct scsi_target
*starget
, int qas
)
2480 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2481 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2482 struct ahd_tmode_tstate
*tstate
;
2483 struct ahd_initiator_tinfo
*tinfo
2484 = ahd_fetch_transinfo(ahd
,
2485 starget
->channel
+ 'A',
2486 shost
->this_id
, starget
->id
, &tstate
);
2487 struct ahd_devinfo devinfo
;
2488 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2489 & ~MSG_EXT_PPR_QAS_REQ
;
2490 unsigned int period
= tinfo
->goal
.period
;
2492 unsigned long flags
;
2495 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2496 printf("%s: %s QAS\n", ahd_name(ahd
),
2497 qas
? "enabling" : "disabling");
2501 ppr_options
|= MSG_EXT_PPR_QAS_REQ
;
2504 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2506 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2507 starget
->channel
+ 'A', ROLE_INITIATOR
);
2508 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2509 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2511 spi_qas(starget
) = (ppr_options
& MSG_EXT_PPR_QAS_REQ
)? 1 : 0;
2513 ahd_lock(ahd
, &flags
);
2514 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2515 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2516 ahd_unlock(ahd
, &flags
);
2519 static void ahd_linux_set_iu(struct scsi_target
*starget
, int iu
)
2521 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2522 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2523 struct ahd_tmode_tstate
*tstate
;
2524 struct ahd_initiator_tinfo
*tinfo
2525 = ahd_fetch_transinfo(ahd
,
2526 starget
->channel
+ 'A',
2527 shost
->this_id
, starget
->id
, &tstate
);
2528 struct ahd_devinfo devinfo
;
2529 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2530 & ~MSG_EXT_PPR_IU_REQ
;
2531 unsigned int period
= tinfo
->goal
.period
;
2533 unsigned long flags
;
2536 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2537 printf("%s: %s IU\n", ahd_name(ahd
),
2538 iu
? "enabling" : "disabling");
2542 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2543 ppr_options
|= MSG_EXT_PPR_DT_REQ
; /* IU requires DT */
2546 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2548 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2549 starget
->channel
+ 'A', ROLE_INITIATOR
);
2550 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2551 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2553 ahd_linux_set_xferflags(starget
, ppr_options
, period
);
2555 ahd_lock(ahd
, &flags
);
2556 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2557 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2558 ahd_unlock(ahd
, &flags
);
2561 static void ahd_linux_set_rd_strm(struct scsi_target
*starget
, int rdstrm
)
2563 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2564 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2565 struct ahd_tmode_tstate
*tstate
;
2566 struct ahd_initiator_tinfo
*tinfo
2567 = ahd_fetch_transinfo(ahd
,
2568 starget
->channel
+ 'A',
2569 shost
->this_id
, starget
->id
, &tstate
);
2570 struct ahd_devinfo devinfo
;
2571 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2572 & ~MSG_EXT_PPR_RD_STRM
;
2573 unsigned int period
= tinfo
->goal
.period
;
2574 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2575 unsigned long flags
;
2578 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2579 printf("%s: %s Read Streaming\n", ahd_name(ahd
),
2580 rdstrm
? "enabling" : "disabling");
2584 ppr_options
|= MSG_EXT_PPR_RD_STRM
;
2586 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2587 starget
->channel
+ 'A', ROLE_INITIATOR
);
2588 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2589 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2591 spi_rd_strm(starget
) = (ppr_options
& MSG_EXT_PPR_RD_STRM
) ? 1 : 0;
2593 ahd_lock(ahd
, &flags
);
2594 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2595 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2596 ahd_unlock(ahd
, &flags
);
2599 static void ahd_linux_set_wr_flow(struct scsi_target
*starget
, int wrflow
)
2601 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2602 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2603 struct ahd_tmode_tstate
*tstate
;
2604 struct ahd_initiator_tinfo
*tinfo
2605 = ahd_fetch_transinfo(ahd
,
2606 starget
->channel
+ 'A',
2607 shost
->this_id
, starget
->id
, &tstate
);
2608 struct ahd_devinfo devinfo
;
2609 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2610 & ~MSG_EXT_PPR_WR_FLOW
;
2611 unsigned int period
= tinfo
->goal
.period
;
2612 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2613 unsigned long flags
;
2616 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2617 printf("%s: %s Write Flow Control\n", ahd_name(ahd
),
2618 wrflow
? "enabling" : "disabling");
2622 ppr_options
|= MSG_EXT_PPR_WR_FLOW
;
2624 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2625 starget
->channel
+ 'A', ROLE_INITIATOR
);
2626 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2627 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2629 spi_wr_flow(starget
) = (ppr_options
& MSG_EXT_PPR_WR_FLOW
) ? 1 : 0;
2631 ahd_lock(ahd
, &flags
);
2632 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2633 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2634 ahd_unlock(ahd
, &flags
);
2637 static void ahd_linux_set_rti(struct scsi_target
*starget
, int rti
)
2639 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2640 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2641 struct ahd_tmode_tstate
*tstate
;
2642 struct ahd_initiator_tinfo
*tinfo
2643 = ahd_fetch_transinfo(ahd
,
2644 starget
->channel
+ 'A',
2645 shost
->this_id
, starget
->id
, &tstate
);
2646 struct ahd_devinfo devinfo
;
2647 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2649 unsigned int period
= tinfo
->goal
.period
;
2650 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2651 unsigned long flags
;
2653 if ((ahd
->features
& AHD_RTI
) == 0) {
2655 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2656 printf("%s: RTI not available\n", ahd_name(ahd
));
2662 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2663 printf("%s: %s RTI\n", ahd_name(ahd
),
2664 rti
? "enabling" : "disabling");
2668 ppr_options
|= MSG_EXT_PPR_RTI
;
2670 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2671 starget
->channel
+ 'A', ROLE_INITIATOR
);
2672 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2673 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2675 spi_rti(starget
) = (ppr_options
& MSG_EXT_PPR_RTI
) ? 1 : 0;
2677 ahd_lock(ahd
, &flags
);
2678 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2679 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2680 ahd_unlock(ahd
, &flags
);
2683 static void ahd_linux_set_pcomp_en(struct scsi_target
*starget
, int pcomp
)
2685 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2686 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2687 struct ahd_tmode_tstate
*tstate
;
2688 struct ahd_initiator_tinfo
*tinfo
2689 = ahd_fetch_transinfo(ahd
,
2690 starget
->channel
+ 'A',
2691 shost
->this_id
, starget
->id
, &tstate
);
2692 struct ahd_devinfo devinfo
;
2693 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2694 & ~MSG_EXT_PPR_PCOMP_EN
;
2695 unsigned int period
= tinfo
->goal
.period
;
2696 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2697 unsigned long flags
;
2700 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2701 printf("%s: %s Precompensation\n", ahd_name(ahd
),
2702 pcomp
? "Enable" : "Disable");
2706 ppr_options
|= MSG_EXT_PPR_PCOMP_EN
;
2708 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2709 starget
->channel
+ 'A', ROLE_INITIATOR
);
2710 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2711 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2713 spi_pcomp_en(starget
) = (ppr_options
& MSG_EXT_PPR_PCOMP_EN
) ? 1 : 0;
2715 ahd_lock(ahd
, &flags
);
2716 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2717 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2718 ahd_unlock(ahd
, &flags
);
2721 static struct spi_function_template ahd_linux_transport_functions
= {
2722 .set_offset
= ahd_linux_set_offset
,
2724 .set_period
= ahd_linux_set_period
,
2726 .set_width
= ahd_linux_set_width
,
2728 .set_dt
= ahd_linux_set_dt
,
2730 .set_iu
= ahd_linux_set_iu
,
2732 .set_qas
= ahd_linux_set_qas
,
2734 .set_rd_strm
= ahd_linux_set_rd_strm
,
2736 .set_wr_flow
= ahd_linux_set_wr_flow
,
2738 .set_rti
= ahd_linux_set_rti
,
2740 .set_pcomp_en
= ahd_linux_set_pcomp_en
,
2747 ahd_linux_init(void)
2749 ahd_linux_transport_template
= spi_attach_transport(&ahd_linux_transport_functions
);
2750 if (!ahd_linux_transport_template
)
2752 scsi_transport_reserve_target(ahd_linux_transport_template
,
2753 sizeof(struct ahd_linux_target
));
2754 scsi_transport_reserve_device(ahd_linux_transport_template
,
2755 sizeof(struct ahd_linux_device
));
2756 if (ahd_linux_detect(&aic79xx_driver_template
) > 0)
2758 spi_release_transport(ahd_linux_transport_template
);
2764 ahd_linux_exit(void)
2766 ahd_linux_pci_exit();
2767 spi_release_transport(ahd_linux_transport_template
);
2770 module_init(ahd_linux_init
);
2771 module_exit(ahd_linux_exit
);