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
;
51 #include <linux/init.h> /* __setup */
52 #include <linux/mm.h> /* For fetching system memory size */
53 #include <linux/blkdev.h> /* For block_size() */
54 #include <linux/delay.h> /* For ssleep/msleep */
55 #include <linux/device.h>
58 * Bucket size for counting good commands in between bad ones.
60 #define AHD_LINUX_ERR_THRESH 1000
63 * Set this to the delay in seconds after SCSI bus reset.
64 * Note, we honor this only for the initial bus reset.
65 * The scsi error recovery code performs its own bus settle
66 * delay handling for error recovery actions.
68 #ifdef CONFIG_AIC79XX_RESET_DELAY_MS
69 #define AIC79XX_RESET_DELAY CONFIG_AIC79XX_RESET_DELAY_MS
71 #define AIC79XX_RESET_DELAY 5000
75 * To change the default number of tagged transactions allowed per-device,
76 * add a line to the lilo.conf file like:
77 * append="aic79xx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}"
78 * which will result in the first four devices on the first two
79 * controllers being set to a tagged queue depth of 32.
81 * The tag_commands is an array of 16 to allow for wide and twin adapters.
82 * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15
86 uint16_t tag_commands
[16]; /* Allow for wide/twin adapters. */
90 * Modify this as you see fit for your system.
92 * 0 tagged queuing disabled
93 * 1 <= n <= 253 n == max tags ever dispatched.
95 * The driver will throttle the number of commands dispatched to a
96 * device if it returns queue full. For devices with a fixed maximum
97 * queue depth, the driver will eventually determine this depth and
98 * lock it in (a console message is printed to indicate that a lock
99 * has occurred). On some devices, queue full is returned for a temporary
100 * resource shortage. These devices will return queue full at varying
101 * depths. The driver will throttle back when the queue fulls occur and
102 * attempt to slowly increase the depth over time as the device recovers
103 * from the resource shortage.
105 * In this example, the first line will disable tagged queueing for all
106 * the devices on the first probed aic79xx adapter.
108 * The second line enables tagged queueing with 4 commands/LUN for IDs
109 * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
110 * driver to attempt to use up to 64 tags for ID 1.
112 * The third line is the same as the first line.
114 * The fourth line disables tagged queueing for devices 0 and 3. It
115 * enables tagged queueing for the other IDs, with 16 commands/LUN
116 * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for
117 * IDs 2, 5-7, and 9-15.
121 * NOTE: The below structure is for reference only, the actual structure
122 * to modify in order to change things is just below this comment block.
123 adapter_tag_info_t aic79xx_tag_info[] =
125 {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
126 {{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}},
127 {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
128 {{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}}
132 #ifdef CONFIG_AIC79XX_CMDS_PER_DEVICE
133 #define AIC79XX_CMDS_PER_DEVICE CONFIG_AIC79XX_CMDS_PER_DEVICE
135 #define AIC79XX_CMDS_PER_DEVICE AHD_MAX_QUEUE
138 #define AIC79XX_CONFIGED_TAG_COMMANDS { \
139 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
140 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
141 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
142 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
143 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
144 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
145 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
146 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE \
150 * By default, use the number of commands specified by
151 * the users kernel configuration.
153 static adapter_tag_info_t aic79xx_tag_info
[] =
155 {AIC79XX_CONFIGED_TAG_COMMANDS
},
156 {AIC79XX_CONFIGED_TAG_COMMANDS
},
157 {AIC79XX_CONFIGED_TAG_COMMANDS
},
158 {AIC79XX_CONFIGED_TAG_COMMANDS
},
159 {AIC79XX_CONFIGED_TAG_COMMANDS
},
160 {AIC79XX_CONFIGED_TAG_COMMANDS
},
161 {AIC79XX_CONFIGED_TAG_COMMANDS
},
162 {AIC79XX_CONFIGED_TAG_COMMANDS
},
163 {AIC79XX_CONFIGED_TAG_COMMANDS
},
164 {AIC79XX_CONFIGED_TAG_COMMANDS
},
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
}
174 * The I/O cell on the chip is very configurable in respect to its analog
175 * characteristics. Set the defaults here; they can be overriden with
176 * the proper insmod parameters.
178 struct ahd_linux_iocell_opts
184 #define AIC79XX_DEFAULT_PRECOMP 0xFF
185 #define AIC79XX_DEFAULT_SLEWRATE 0xFF
186 #define AIC79XX_DEFAULT_AMPLITUDE 0xFF
187 #define AIC79XX_DEFAULT_IOOPTS \
189 AIC79XX_DEFAULT_PRECOMP, \
190 AIC79XX_DEFAULT_SLEWRATE, \
191 AIC79XX_DEFAULT_AMPLITUDE \
193 #define AIC79XX_PRECOMP_INDEX 0
194 #define AIC79XX_SLEWRATE_INDEX 1
195 #define AIC79XX_AMPLITUDE_INDEX 2
196 static struct ahd_linux_iocell_opts aic79xx_iocell_info
[] =
198 AIC79XX_DEFAULT_IOOPTS
,
199 AIC79XX_DEFAULT_IOOPTS
,
200 AIC79XX_DEFAULT_IOOPTS
,
201 AIC79XX_DEFAULT_IOOPTS
,
202 AIC79XX_DEFAULT_IOOPTS
,
203 AIC79XX_DEFAULT_IOOPTS
,
204 AIC79XX_DEFAULT_IOOPTS
,
205 AIC79XX_DEFAULT_IOOPTS
,
206 AIC79XX_DEFAULT_IOOPTS
,
207 AIC79XX_DEFAULT_IOOPTS
,
208 AIC79XX_DEFAULT_IOOPTS
,
209 AIC79XX_DEFAULT_IOOPTS
,
210 AIC79XX_DEFAULT_IOOPTS
,
211 AIC79XX_DEFAULT_IOOPTS
,
212 AIC79XX_DEFAULT_IOOPTS
,
213 AIC79XX_DEFAULT_IOOPTS
217 * There should be a specific return value for this in scsi.h, but
218 * it seems that most drivers ignore it.
220 #define DID_UNDERFLOW DID_ERROR
223 ahd_print_path(struct ahd_softc
*ahd
, struct scb
*scb
)
225 printk("(scsi%d:%c:%d:%d): ",
226 ahd
->platform_data
->host
->host_no
,
227 scb
!= NULL
? SCB_GET_CHANNEL(ahd
, scb
) : 'X',
228 scb
!= NULL
? SCB_GET_TARGET(ahd
, scb
) : -1,
229 scb
!= NULL
? SCB_GET_LUN(scb
) : -1);
233 * XXX - these options apply unilaterally to _all_ adapters
234 * cards in the system. This should be fixed. Exceptions to this
235 * rule are noted in the comments.
239 * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This
240 * has no effect on any later resets that might occur due to things like
243 static uint32_t aic79xx_no_reset
;
246 * Certain PCI motherboards will scan PCI devices from highest to lowest,
247 * others scan from lowest to highest, and they tend to do all kinds of
248 * strange things when they come into contact with PCI bridge chips. The
249 * net result of all this is that the PCI card that is actually used to boot
250 * the machine is very hard to detect. Most motherboards go from lowest
251 * PCI slot number to highest, and the first SCSI controller found is the
252 * one you boot from. The only exceptions to this are when a controller
253 * has its BIOS disabled. So, we by default sort all of our SCSI controllers
254 * from lowest PCI slot number to highest PCI slot number. We also force
255 * all controllers with their BIOS disabled to the end of the list. This
256 * works on *almost* all computers. Where it doesn't work, we have this
257 * option. Setting this option to non-0 will reverse the order of the sort
258 * to highest first, then lowest, but will still leave cards with their BIOS
259 * disabled at the very end. That should fix everyone up unless there are
260 * really strange cirumstances.
262 static uint32_t aic79xx_reverse_scan
;
265 * Should we force EXTENDED translation on a controller.
266 * 0 == Use whatever is in the SEEPROM or default to off
267 * 1 == Use whatever is in the SEEPROM or default to on
269 static uint32_t aic79xx_extended
;
272 * PCI bus parity checking of the Adaptec controllers. This is somewhat
273 * dubious at best. To my knowledge, this option has never actually
274 * solved a PCI parity problem, but on certain machines with broken PCI
275 * chipset configurations, it can generate tons of false error messages.
276 * It's included in the driver for completeness.
277 * 0 = Shut off PCI parity check
278 * non-0 = Enable PCI parity check
280 * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
281 * variable to -1 you would actually want to simply pass the variable
282 * name without a number. That will invert the 0 which will result in
285 static uint32_t aic79xx_pci_parity
= ~0;
288 * There are lots of broken chipsets in the world. Some of them will
289 * violate the PCI spec when we issue byte sized memory writes to our
290 * controller. I/O mapped register access, if allowed by the given
291 * platform, will work in almost all cases.
293 uint32_t aic79xx_allow_memio
= ~0;
296 * So that we can set how long each device is given as a selection timeout.
297 * The table of values goes like this:
302 * We default to 256ms because some older devices need a longer time
303 * to respond to initial selection.
305 static uint32_t aic79xx_seltime
;
308 * Certain devices do not perform any aging on commands. Should the
309 * device be saturated by commands in one portion of the disk, it is
310 * possible for transactions on far away sectors to never be serviced.
311 * To handle these devices, we can periodically send an ordered tag to
312 * force all outstanding transactions to be serviced prior to a new
315 uint32_t aic79xx_periodic_otag
;
317 /* Some storage boxes are using an LSI chip which has a bug making it
318 * impossible to use aic79xx Rev B chip in 320 speeds. The following
319 * storage boxes have been reported to be buggy:
320 * EonStor 3U 16-Bay: U16U-G3A3
321 * EonStor 2U 12-Bay: U12U-G3A3
322 * SentinelRAID: 2500F R5 / R6
323 * SentinelRAID: 2500F R1
324 * SentinelRAID: 2500F/1500F
327 * To get around this LSI bug, you can set your board to 160 mode
328 * or you can enable the SLOWCRC bit.
330 uint32_t aic79xx_slowcrc
;
333 * Module information and settable options.
335 static char *aic79xx
= NULL
;
337 MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>");
338 MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver");
339 MODULE_LICENSE("Dual BSD/GPL");
340 MODULE_VERSION(AIC79XX_DRIVER_VERSION
);
341 module_param(aic79xx
, charp
, 0444);
342 MODULE_PARM_DESC(aic79xx
,
343 "period delimited, options string.\n"
344 " verbose Enable verbose/diagnostic logging\n"
345 " allow_memio Allow device registers to be memory mapped\n"
346 " debug Bitmask of debug values to enable\n"
347 " no_reset Supress initial bus resets\n"
348 " extended Enable extended geometry on all controllers\n"
349 " periodic_otag Send an ordered tagged transaction\n"
350 " periodically to prevent tag starvation.\n"
351 " This may be required by some older disk\n"
352 " or drives/RAID arrays.\n"
353 " reverse_scan Sort PCI devices highest Bus/Slot to lowest\n"
354 " tag_info:<tag_str> Set per-target tag depth\n"
355 " global_tag_depth:<int> Global tag depth for all targets on all buses\n"
356 " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
357 " precomp:<pcomp_list> Set the signal precompensation (0-7).\n"
358 " amplitude:<int> Set the signal amplitude (0-7).\n"
359 " seltime:<int> Selection Timeout:\n"
360 " (0/256ms,1/128ms,2/64ms,3/32ms)\n"
361 " slowcrc Turn on the SLOWCRC bit (Rev B only)\n"
363 " Sample /etc/modprobe.conf line:\n"
364 " Enable verbose logging\n"
365 " Set tag depth on Controller 2/Target 2 to 10 tags\n"
366 " Shorten the selection timeout to 128ms\n"
368 " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n"
371 static void ahd_linux_handle_scsi_status(struct ahd_softc
*,
372 struct scsi_device
*,
374 static void ahd_linux_queue_cmd_complete(struct ahd_softc
*ahd
,
375 struct scsi_cmnd
*cmd
);
376 static void ahd_linux_sem_timeout(u_long arg
);
377 static int ahd_linux_queue_recovery_cmd(struct scsi_cmnd
*cmd
, scb_flag flag
);
378 static void ahd_linux_initialize_scsi_bus(struct ahd_softc
*ahd
);
379 static u_int
ahd_linux_user_tagdepth(struct ahd_softc
*ahd
,
380 struct ahd_devinfo
*devinfo
);
381 static void ahd_linux_device_queue_depth(struct scsi_device
*);
382 static int ahd_linux_run_command(struct ahd_softc
*,
383 struct ahd_linux_device
*,
385 static void ahd_linux_setup_tag_info_global(char *p
);
386 static int aic79xx_setup(char *c
);
388 static int ahd_linux_unit
;
391 /****************************** Inlines ***************************************/
392 static __inline
void ahd_linux_unmap_scb(struct ahd_softc
*, struct scb
*);
395 ahd_linux_unmap_scb(struct ahd_softc
*ahd
, struct scb
*scb
)
397 struct scsi_cmnd
*cmd
;
401 direction
= cmd
->sc_data_direction
;
402 ahd_sync_sglist(ahd
, scb
, BUS_DMASYNC_POSTWRITE
);
403 if (cmd
->use_sg
!= 0) {
404 struct scatterlist
*sg
;
406 sg
= (struct scatterlist
*)cmd
->request_buffer
;
407 pci_unmap_sg(ahd
->dev_softc
, sg
, cmd
->use_sg
, direction
);
408 } else if (cmd
->request_bufflen
!= 0) {
409 pci_unmap_single(ahd
->dev_softc
,
410 scb
->platform_data
->buf_busaddr
,
411 cmd
->request_bufflen
, direction
);
415 /******************************** Macros **************************************/
416 #define BUILD_SCSIID(ahd, cmd) \
417 (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id)
420 * Return a string describing the driver.
423 ahd_linux_info(struct Scsi_Host
*host
)
425 static char buffer
[512];
428 struct ahd_softc
*ahd
;
431 ahd
= *(struct ahd_softc
**)host
->hostdata
;
432 memset(bp
, 0, sizeof(buffer
));
433 strcpy(bp
, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
434 strcat(bp
, AIC79XX_DRIVER_VERSION
);
437 strcat(bp
, ahd
->description
);
440 ahd_controller_info(ahd
, ahd_info
);
441 strcat(bp
, ahd_info
);
448 * Queue an SCB to the controller.
451 ahd_linux_queue(struct scsi_cmnd
* cmd
, void (*scsi_done
) (struct scsi_cmnd
*))
453 struct ahd_softc
*ahd
;
454 struct ahd_linux_device
*dev
= scsi_transport_device_data(cmd
->device
);
455 int rtn
= SCSI_MLQUEUE_HOST_BUSY
;
458 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
460 ahd_lock(ahd
, &flags
);
461 if (ahd
->platform_data
->qfrozen
== 0) {
462 cmd
->scsi_done
= scsi_done
;
463 cmd
->result
= CAM_REQ_INPROG
<< 16;
464 rtn
= ahd_linux_run_command(ahd
, dev
, cmd
);
467 ahd_unlock(ahd
, &flags
);
471 static inline struct scsi_target
**
472 ahd_linux_target_in_softc(struct scsi_target
*starget
)
474 struct ahd_softc
*ahd
=
475 *((struct ahd_softc
**)dev_to_shost(&starget
->dev
)->hostdata
);
476 unsigned int target_offset
;
478 target_offset
= starget
->id
;
479 if (starget
->channel
!= 0)
482 return &ahd
->platform_data
->starget
[target_offset
];
486 ahd_linux_target_alloc(struct scsi_target
*starget
)
488 struct ahd_softc
*ahd
=
489 *((struct ahd_softc
**)dev_to_shost(&starget
->dev
)->hostdata
);
491 struct scsi_target
**ahd_targp
= ahd_linux_target_in_softc(starget
);
492 struct ahd_linux_target
*targ
= scsi_transport_target_data(starget
);
493 struct ahd_devinfo devinfo
;
494 struct ahd_initiator_tinfo
*tinfo
;
495 struct ahd_tmode_tstate
*tstate
;
496 char channel
= starget
->channel
+ 'A';
498 ahd_lock(ahd
, &flags
);
500 BUG_ON(*ahd_targp
!= NULL
);
502 *ahd_targp
= starget
;
503 memset(targ
, 0, sizeof(*targ
));
505 tinfo
= ahd_fetch_transinfo(ahd
, channel
, ahd
->our_id
,
506 starget
->id
, &tstate
);
507 ahd_compile_devinfo(&devinfo
, ahd
->our_id
, starget
->id
,
508 CAM_LUN_WILDCARD
, channel
,
510 spi_min_period(starget
) = AHD_SYNCRATE_MAX
; /* We can do U320 */
511 if ((ahd
->bugs
& AHD_PACED_NEGTABLE_BUG
) != 0)
512 spi_max_offset(starget
) = MAX_OFFSET_PACED_BUG
;
514 spi_max_offset(starget
) = MAX_OFFSET_PACED
;
515 spi_max_width(starget
) = ahd
->features
& AHD_WIDE
;
517 ahd_set_syncrate(ahd
, &devinfo
, 0, 0, 0,
518 AHD_TRANS_GOAL
, /*paused*/FALSE
);
519 ahd_set_width(ahd
, &devinfo
, MSG_EXT_WDTR_BUS_8_BIT
,
520 AHD_TRANS_GOAL
, /*paused*/FALSE
);
521 ahd_unlock(ahd
, &flags
);
527 ahd_linux_target_destroy(struct scsi_target
*starget
)
529 struct scsi_target
**ahd_targp
= ahd_linux_target_in_softc(starget
);
535 ahd_linux_slave_alloc(struct scsi_device
*sdev
)
537 struct ahd_softc
*ahd
=
538 *((struct ahd_softc
**)sdev
->host
->hostdata
);
539 struct scsi_target
*starget
= sdev
->sdev_target
;
540 struct ahd_linux_target
*targ
= scsi_transport_target_data(starget
);
541 struct ahd_linux_device
*dev
;
544 printf("%s: Slave Alloc %d\n", ahd_name(ahd
), sdev
->id
);
546 BUG_ON(targ
->sdev
[sdev
->lun
] != NULL
);
548 dev
= scsi_transport_device_data(sdev
);
549 memset(dev
, 0, sizeof(*dev
));
552 * We start out life using untagged
553 * transactions of which we allow one.
558 * Set maxtags to 0. This will be changed if we
559 * later determine that we are dealing with
560 * a tagged queuing capable device.
564 targ
->sdev
[sdev
->lun
] = sdev
;
570 ahd_linux_slave_configure(struct scsi_device
*sdev
)
572 struct ahd_softc
*ahd
;
574 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
576 sdev_printk(KERN_INFO
, sdev
, "Slave Configure\n");
578 ahd_linux_device_queue_depth(sdev
);
580 /* Initial Domain Validation */
581 if (!spi_initial_dv(sdev
->sdev_target
))
588 ahd_linux_slave_destroy(struct scsi_device
*sdev
)
590 struct ahd_softc
*ahd
;
591 struct ahd_linux_device
*dev
= scsi_transport_device_data(sdev
);
592 struct ahd_linux_target
*targ
= scsi_transport_target_data(sdev
->sdev_target
);
594 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
596 printf("%s: Slave Destroy %d\n", ahd_name(ahd
), sdev
->id
);
600 targ
->sdev
[sdev
->lun
] = NULL
;
604 #if defined(__i386__)
606 * Return the disk geometry for the given SCSI device.
609 ahd_linux_biosparam(struct scsi_device
*sdev
, struct block_device
*bdev
,
610 sector_t capacity
, int geom
[])
618 struct ahd_softc
*ahd
;
620 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
622 bh
= scsi_bios_ptable(bdev
);
624 ret
= scsi_partsize(bh
, capacity
,
625 &geom
[2], &geom
[0], &geom
[1]);
632 cylinders
= aic_sector_div(capacity
, heads
, sectors
);
634 if (aic79xx_extended
!= 0)
637 extended
= (ahd
->flags
& AHD_EXTENDED_TRANS_A
) != 0;
638 if (extended
&& cylinders
>= 1024) {
641 cylinders
= aic_sector_div(capacity
, heads
, sectors
);
651 * Abort the current SCSI command(s).
654 ahd_linux_abort(struct scsi_cmnd
*cmd
)
658 error
= ahd_linux_queue_recovery_cmd(cmd
, SCB_ABORT
);
660 printf("aic79xx_abort returns 0x%x\n", error
);
665 * Attempt to send a target reset message to the device that timed out.
668 ahd_linux_dev_reset(struct scsi_cmnd
*cmd
)
672 error
= ahd_linux_queue_recovery_cmd(cmd
, SCB_DEVICE_RESET
);
674 printf("aic79xx_dev_reset returns 0x%x\n", error
);
679 * Reset the SCSI bus.
682 ahd_linux_bus_reset(struct scsi_cmnd
*cmd
)
684 struct ahd_softc
*ahd
;
688 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
690 if ((ahd_debug
& AHD_SHOW_RECOVERY
) != 0)
691 printf("%s: Bus reset called for cmd %p\n",
695 found
= ahd_reset_channel(ahd
, scmd_channel(cmd
) + 'A',
696 /*initiate reset*/TRUE
);
700 printf("%s: SCSI bus reset delivered. "
701 "%d SCBs aborted.\n", ahd_name(ahd
), found
);
706 struct scsi_host_template aic79xx_driver_template
= {
707 .module
= THIS_MODULE
,
709 .proc_name
= "aic79xx",
710 .proc_info
= ahd_linux_proc_info
,
711 .info
= ahd_linux_info
,
712 .queuecommand
= ahd_linux_queue
,
713 .eh_abort_handler
= ahd_linux_abort
,
714 .eh_device_reset_handler
= ahd_linux_dev_reset
,
715 .eh_bus_reset_handler
= ahd_linux_bus_reset
,
716 #if defined(__i386__)
717 .bios_param
= ahd_linux_biosparam
,
719 .can_queue
= AHD_MAX_QUEUE
,
722 .use_clustering
= ENABLE_CLUSTERING
,
723 .slave_alloc
= ahd_linux_slave_alloc
,
724 .slave_configure
= ahd_linux_slave_configure
,
725 .slave_destroy
= ahd_linux_slave_destroy
,
726 .target_alloc
= ahd_linux_target_alloc
,
727 .target_destroy
= ahd_linux_target_destroy
,
730 /******************************** Bus DMA *************************************/
732 ahd_dma_tag_create(struct ahd_softc
*ahd
, bus_dma_tag_t parent
,
733 bus_size_t alignment
, bus_size_t boundary
,
734 dma_addr_t lowaddr
, dma_addr_t highaddr
,
735 bus_dma_filter_t
*filter
, void *filterarg
,
736 bus_size_t maxsize
, int nsegments
,
737 bus_size_t maxsegsz
, int flags
, bus_dma_tag_t
*ret_tag
)
741 dmat
= malloc(sizeof(*dmat
), M_DEVBUF
, M_NOWAIT
);
746 * Linux is very simplistic about DMA memory. For now don't
747 * maintain all specification information. Once Linux supplies
748 * better facilities for doing these operations, or the
749 * needs of this particular driver change, we might need to do
752 dmat
->alignment
= alignment
;
753 dmat
->boundary
= boundary
;
754 dmat
->maxsize
= maxsize
;
760 ahd_dma_tag_destroy(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
)
762 free(dmat
, M_DEVBUF
);
766 ahd_dmamem_alloc(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, void** vaddr
,
767 int flags
, bus_dmamap_t
*mapp
)
769 *vaddr
= pci_alloc_consistent(ahd
->dev_softc
,
770 dmat
->maxsize
, mapp
);
777 ahd_dmamem_free(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
,
778 void* vaddr
, bus_dmamap_t map
)
780 pci_free_consistent(ahd
->dev_softc
, dmat
->maxsize
,
785 ahd_dmamap_load(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
,
786 void *buf
, bus_size_t buflen
, bus_dmamap_callback_t
*cb
,
787 void *cb_arg
, int flags
)
790 * Assume for now that this will only be used during
791 * initialization and not for per-transaction buffer mapping.
793 bus_dma_segment_t stack_sg
;
795 stack_sg
.ds_addr
= map
;
796 stack_sg
.ds_len
= dmat
->maxsize
;
797 cb(cb_arg
, &stack_sg
, /*nseg*/1, /*error*/0);
802 ahd_dmamap_destroy(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
)
807 ahd_dmamap_unload(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
)
813 /********************* Platform Dependent Functions ***************************/
815 * Compare "left hand" softc with "right hand" softc, returning:
816 * < 0 - lahd has a lower priority than rahd
817 * 0 - Softcs are equal
818 * > 0 - lahd has a higher priority than rahd
821 ahd_softc_comp(struct ahd_softc
*lahd
, struct ahd_softc
*rahd
)
826 * Under Linux, cards are ordered as follows:
827 * 1) PCI devices that are marked as the boot controller.
828 * 2) PCI devices with BIOS enabled sorted by bus/slot/func.
829 * 3) All remaining PCI devices sorted by bus/slot/func.
832 value
= (lahd
->flags
& AHD_BOOT_CHANNEL
)
833 - (rahd
->flags
& AHD_BOOT_CHANNEL
);
835 /* Controllers set for boot have a *higher* priority */
839 value
= (lahd
->flags
& AHD_BIOS_ENABLED
)
840 - (rahd
->flags
& AHD_BIOS_ENABLED
);
842 /* Controllers with BIOS enabled have a *higher* priority */
845 /* Still equal. Sort by bus/slot/func. */
846 if (aic79xx_reverse_scan
!= 0)
847 value
= ahd_get_pci_bus(lahd
->dev_softc
)
848 - ahd_get_pci_bus(rahd
->dev_softc
);
850 value
= ahd_get_pci_bus(rahd
->dev_softc
)
851 - ahd_get_pci_bus(lahd
->dev_softc
);
854 if (aic79xx_reverse_scan
!= 0)
855 value
= ahd_get_pci_slot(lahd
->dev_softc
)
856 - ahd_get_pci_slot(rahd
->dev_softc
);
858 value
= ahd_get_pci_slot(rahd
->dev_softc
)
859 - ahd_get_pci_slot(lahd
->dev_softc
);
863 value
= rahd
->channel
- lahd
->channel
;
868 ahd_linux_setup_iocell_info(u_long index
, int instance
, int targ
, int32_t value
)
872 && (instance
< NUM_ELEMENTS(aic79xx_iocell_info
))) {
873 uint8_t *iocell_info
;
875 iocell_info
= (uint8_t*)&aic79xx_iocell_info
[instance
];
876 iocell_info
[index
] = value
& 0xFFFF;
878 printf("iocell[%d:%ld] = %d\n", instance
, index
, value
);
883 ahd_linux_setup_tag_info_global(char *p
)
887 tags
= simple_strtoul(p
+ 1, NULL
, 0) & 0xff;
888 printf("Setting Global Tags= %d\n", tags
);
890 for (i
= 0; i
< NUM_ELEMENTS(aic79xx_tag_info
); i
++) {
891 for (j
= 0; j
< AHD_NUM_TARGETS
; j
++) {
892 aic79xx_tag_info
[i
].tag_commands
[j
] = tags
;
898 ahd_linux_setup_tag_info(u_long arg
, int instance
, int targ
, int32_t value
)
901 if ((instance
>= 0) && (targ
>= 0)
902 && (instance
< NUM_ELEMENTS(aic79xx_tag_info
))
903 && (targ
< AHD_NUM_TARGETS
)) {
904 aic79xx_tag_info
[instance
].tag_commands
[targ
] = value
& 0x1FF;
906 printf("tag_info[%d:%d] = %d\n", instance
, targ
, value
);
911 ahd_parse_brace_option(char *opt_name
, char *opt_arg
, char *end
, int depth
,
912 void (*callback
)(u_long
, int, int, int32_t),
921 char tok_list
[] = {'.', ',', '{', '}', '\0'};
923 /* All options use a ':' name/arg separator */
931 * Restore separator that may be in
932 * the middle of our option argument.
934 tok_end
= strchr(opt_arg
, '\0');
940 if (instance
== -1) {
947 printf("Malformed Option %s\n",
957 else if (instance
!= -1)
967 else if (instance
>= 0)
976 for (i
= 0; tok_list
[i
]; i
++) {
977 tok_end2
= strchr(opt_arg
, tok_list
[i
]);
978 if ((tok_end2
) && (tok_end2
< tok_end
))
981 callback(callback_arg
, instance
, targ
,
982 simple_strtol(opt_arg
, NULL
, 0));
991 * Handle Linux boot parameters. This routine allows for assigning a value
992 * to a parameter with a ':' between the parameter and the value.
993 * ie. aic79xx=stpwlev:1,extended
996 aic79xx_setup(char *s
)
1006 { "extended", &aic79xx_extended
},
1007 { "no_reset", &aic79xx_no_reset
},
1008 { "verbose", &aic79xx_verbose
},
1009 { "allow_memio", &aic79xx_allow_memio
},
1011 { "debug", &ahd_debug
},
1013 { "reverse_scan", &aic79xx_reverse_scan
},
1014 { "periodic_otag", &aic79xx_periodic_otag
},
1015 { "pci_parity", &aic79xx_pci_parity
},
1016 { "seltime", &aic79xx_seltime
},
1017 { "tag_info", NULL
},
1018 { "global_tag_depth", NULL
},
1019 { "slewrate", NULL
},
1020 { "precomp", NULL
},
1021 { "amplitude", NULL
},
1022 { "slowcrc", &aic79xx_slowcrc
},
1025 end
= strchr(s
, '\0');
1028 * XXX ia64 gcc isn't smart enough to know that NUM_ELEMENTS
1029 * will never be 0 in this case.
1033 while ((p
= strsep(&s
, ",.")) != NULL
) {
1036 for (i
= 0; i
< NUM_ELEMENTS(options
); i
++) {
1038 n
= strlen(options
[i
].name
);
1039 if (strncmp(options
[i
].name
, p
, n
) == 0)
1042 if (i
== NUM_ELEMENTS(options
))
1045 if (strncmp(p
, "global_tag_depth", n
) == 0) {
1046 ahd_linux_setup_tag_info_global(p
+ n
);
1047 } else if (strncmp(p
, "tag_info", n
) == 0) {
1048 s
= ahd_parse_brace_option("tag_info", p
+ n
, end
,
1049 2, ahd_linux_setup_tag_info
, 0);
1050 } else if (strncmp(p
, "slewrate", n
) == 0) {
1051 s
= ahd_parse_brace_option("slewrate",
1052 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1053 AIC79XX_SLEWRATE_INDEX
);
1054 } else if (strncmp(p
, "precomp", n
) == 0) {
1055 s
= ahd_parse_brace_option("precomp",
1056 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1057 AIC79XX_PRECOMP_INDEX
);
1058 } else if (strncmp(p
, "amplitude", n
) == 0) {
1059 s
= ahd_parse_brace_option("amplitude",
1060 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1061 AIC79XX_AMPLITUDE_INDEX
);
1062 } else if (p
[n
] == ':') {
1063 *(options
[i
].flag
) = simple_strtoul(p
+ n
+ 1, NULL
, 0);
1064 } else if (!strncmp(p
, "verbose", n
)) {
1065 *(options
[i
].flag
) = 1;
1067 *(options
[i
].flag
) ^= 0xFFFFFFFF;
1073 __setup("aic79xx=", aic79xx_setup
);
1075 uint32_t aic79xx_verbose
;
1078 ahd_linux_register_host(struct ahd_softc
*ahd
, struct scsi_host_template
*template)
1081 struct Scsi_Host
*host
;
1086 template->name
= ahd
->description
;
1087 host
= scsi_host_alloc(template, sizeof(struct ahd_softc
*));
1091 *((struct ahd_softc
**)host
->hostdata
) = ahd
;
1092 ahd
->platform_data
->host
= host
;
1093 host
->can_queue
= AHD_MAX_QUEUE
;
1094 host
->cmd_per_lun
= 2;
1095 host
->sg_tablesize
= AHD_NSEG
;
1096 host
->this_id
= ahd
->our_id
;
1097 host
->irq
= ahd
->platform_data
->irq
;
1098 host
->max_id
= (ahd
->features
& AHD_WIDE
) ? 16 : 8;
1099 host
->max_lun
= AHD_NUM_LUNS
;
1100 host
->max_channel
= 0;
1101 host
->sg_tablesize
= AHD_NSEG
;
1103 ahd_set_unit(ahd
, ahd_linux_unit
++);
1104 ahd_unlock(ahd
, &s
);
1105 sprintf(buf
, "scsi%d", host
->host_no
);
1106 new_name
= malloc(strlen(buf
) + 1, M_DEVBUF
, M_NOWAIT
);
1107 if (new_name
!= NULL
) {
1108 strcpy(new_name
, buf
);
1109 ahd_set_name(ahd
, new_name
);
1111 host
->unique_id
= ahd
->unit
;
1112 ahd_linux_initialize_scsi_bus(ahd
);
1113 ahd_intr_enable(ahd
, TRUE
);
1115 host
->transportt
= ahd_linux_transport_template
;
1117 retval
= scsi_add_host(host
, &ahd
->dev_softc
->dev
);
1119 printk(KERN_WARNING
"aic79xx: scsi_add_host failed\n");
1120 scsi_host_put(host
);
1124 scsi_scan_host(host
);
1129 ahd_linux_get_memsize(void)
1134 return ((uint64_t)si
.totalram
<< PAGE_SHIFT
);
1138 * Place the SCSI bus into a known state by either resetting it,
1139 * or forcing transfer negotiations on the next command to any
1143 ahd_linux_initialize_scsi_bus(struct ahd_softc
*ahd
)
1152 if (aic79xx_no_reset
!= 0)
1153 ahd
->flags
&= ~AHD_RESET_BUS_A
;
1155 if ((ahd
->flags
& AHD_RESET_BUS_A
) != 0)
1156 ahd_reset_channel(ahd
, 'A', /*initiate_reset*/TRUE
);
1158 numtarg
= (ahd
->features
& AHD_WIDE
) ? 16 : 8;
1163 * Force negotiation to async for all targets that
1164 * will not see an initial bus reset.
1166 for (; target_id
< numtarg
; target_id
++) {
1167 struct ahd_devinfo devinfo
;
1168 struct ahd_initiator_tinfo
*tinfo
;
1169 struct ahd_tmode_tstate
*tstate
;
1171 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
1172 target_id
, &tstate
);
1173 ahd_compile_devinfo(&devinfo
, ahd
->our_id
, target_id
,
1174 CAM_LUN_WILDCARD
, 'A', ROLE_INITIATOR
);
1175 ahd_update_neg_request(ahd
, &devinfo
, tstate
,
1176 tinfo
, AHD_NEG_ALWAYS
);
1178 ahd_unlock(ahd
, &s
);
1179 /* Give the bus some time to recover */
1180 if ((ahd
->flags
& AHD_RESET_BUS_A
) != 0) {
1181 ahd_freeze_simq(ahd
);
1182 msleep(AIC79XX_RESET_DELAY
);
1183 ahd_release_simq(ahd
);
1188 ahd_platform_alloc(struct ahd_softc
*ahd
, void *platform_arg
)
1190 ahd
->platform_data
=
1191 malloc(sizeof(struct ahd_platform_data
), M_DEVBUF
, M_NOWAIT
);
1192 if (ahd
->platform_data
== NULL
)
1194 memset(ahd
->platform_data
, 0, sizeof(struct ahd_platform_data
));
1195 ahd
->platform_data
->irq
= AHD_LINUX_NOIRQ
;
1197 init_MUTEX_LOCKED(&ahd
->platform_data
->eh_sem
);
1198 ahd
->seltime
= (aic79xx_seltime
& 0x3) << 4;
1203 ahd_platform_free(struct ahd_softc
*ahd
)
1205 struct scsi_target
*starget
;
1208 if (ahd
->platform_data
!= NULL
) {
1209 /* destroy all of the device and target objects */
1210 for (i
= 0; i
< AHD_NUM_TARGETS
; i
++) {
1211 starget
= ahd
->platform_data
->starget
[i
];
1212 if (starget
!= NULL
) {
1213 for (j
= 0; j
< AHD_NUM_LUNS
; j
++) {
1214 struct ahd_linux_target
*targ
=
1215 scsi_transport_target_data(starget
);
1216 if (targ
->sdev
[j
] == NULL
)
1218 targ
->sdev
[j
] = NULL
;
1220 ahd
->platform_data
->starget
[i
] = NULL
;
1224 if (ahd
->platform_data
->irq
!= AHD_LINUX_NOIRQ
)
1225 free_irq(ahd
->platform_data
->irq
, ahd
);
1226 if (ahd
->tags
[0] == BUS_SPACE_PIO
1227 && ahd
->bshs
[0].ioport
!= 0)
1228 release_region(ahd
->bshs
[0].ioport
, 256);
1229 if (ahd
->tags
[1] == BUS_SPACE_PIO
1230 && ahd
->bshs
[1].ioport
!= 0)
1231 release_region(ahd
->bshs
[1].ioport
, 256);
1232 if (ahd
->tags
[0] == BUS_SPACE_MEMIO
1233 && ahd
->bshs
[0].maddr
!= NULL
) {
1234 iounmap(ahd
->bshs
[0].maddr
);
1235 release_mem_region(ahd
->platform_data
->mem_busaddr
,
1238 if (ahd
->platform_data
->host
)
1239 scsi_host_put(ahd
->platform_data
->host
);
1241 free(ahd
->platform_data
, M_DEVBUF
);
1246 ahd_platform_init(struct ahd_softc
*ahd
)
1249 * Lookup and commit any modified IO Cell options.
1251 if (ahd
->unit
< NUM_ELEMENTS(aic79xx_iocell_info
)) {
1252 struct ahd_linux_iocell_opts
*iocell_opts
;
1254 iocell_opts
= &aic79xx_iocell_info
[ahd
->unit
];
1255 if (iocell_opts
->precomp
!= AIC79XX_DEFAULT_PRECOMP
)
1256 AHD_SET_PRECOMP(ahd
, iocell_opts
->precomp
);
1257 if (iocell_opts
->slewrate
!= AIC79XX_DEFAULT_SLEWRATE
)
1258 AHD_SET_SLEWRATE(ahd
, iocell_opts
->slewrate
);
1259 if (iocell_opts
->amplitude
!= AIC79XX_DEFAULT_AMPLITUDE
)
1260 AHD_SET_AMPLITUDE(ahd
, iocell_opts
->amplitude
);
1266 ahd_platform_freeze_devq(struct ahd_softc
*ahd
, struct scb
*scb
)
1268 ahd_platform_abort_scbs(ahd
, SCB_GET_TARGET(ahd
, scb
),
1269 SCB_GET_CHANNEL(ahd
, scb
),
1270 SCB_GET_LUN(scb
), SCB_LIST_NULL
,
1271 ROLE_UNKNOWN
, CAM_REQUEUE_REQ
);
1275 ahd_platform_set_tags(struct ahd_softc
*ahd
, struct ahd_devinfo
*devinfo
,
1278 struct scsi_target
*starget
;
1279 struct ahd_linux_target
*targ
;
1280 struct ahd_linux_device
*dev
;
1281 struct scsi_device
*sdev
;
1285 starget
= ahd
->platform_data
->starget
[devinfo
->target
];
1286 targ
= scsi_transport_target_data(starget
);
1287 BUG_ON(targ
== NULL
);
1288 sdev
= targ
->sdev
[devinfo
->lun
];
1292 dev
= scsi_transport_device_data(sdev
);
1296 was_queuing
= dev
->flags
& (AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
);
1299 case AHD_QUEUE_NONE
:
1302 case AHD_QUEUE_BASIC
:
1303 now_queuing
= AHD_DEV_Q_BASIC
;
1305 case AHD_QUEUE_TAGGED
:
1306 now_queuing
= AHD_DEV_Q_TAGGED
;
1309 if ((dev
->flags
& AHD_DEV_FREEZE_TIL_EMPTY
) == 0
1310 && (was_queuing
!= now_queuing
)
1311 && (dev
->active
!= 0)) {
1312 dev
->flags
|= AHD_DEV_FREEZE_TIL_EMPTY
;
1316 dev
->flags
&= ~(AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
|AHD_DEV_PERIODIC_OTAG
);
1320 usertags
= ahd_linux_user_tagdepth(ahd
, devinfo
);
1323 * Start out agressively and allow our
1324 * dynamic queue depth algorithm to take
1327 dev
->maxtags
= usertags
;
1328 dev
->openings
= dev
->maxtags
- dev
->active
;
1330 if (dev
->maxtags
== 0) {
1332 * Queueing is disabled by the user.
1335 } else if (alg
== AHD_QUEUE_TAGGED
) {
1336 dev
->flags
|= AHD_DEV_Q_TAGGED
;
1337 if (aic79xx_periodic_otag
!= 0)
1338 dev
->flags
|= AHD_DEV_PERIODIC_OTAG
;
1340 dev
->flags
|= AHD_DEV_Q_BASIC
;
1342 /* We can only have one opening. */
1344 dev
->openings
= 1 - dev
->active
;
1347 switch ((dev
->flags
& (AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
))) {
1348 case AHD_DEV_Q_BASIC
:
1349 scsi_adjust_queue_depth(sdev
,
1351 dev
->openings
+ dev
->active
);
1353 case AHD_DEV_Q_TAGGED
:
1354 scsi_adjust_queue_depth(sdev
,
1356 dev
->openings
+ dev
->active
);
1360 * We allow the OS to queue 2 untagged transactions to
1361 * us at any time even though we can only execute them
1362 * serially on the controller/device. This should
1363 * remove some latency.
1365 scsi_adjust_queue_depth(sdev
,
1373 ahd_platform_abort_scbs(struct ahd_softc
*ahd
, int target
, char channel
,
1374 int lun
, u_int tag
, role_t role
, uint32_t status
)
1380 ahd_linux_user_tagdepth(struct ahd_softc
*ahd
, struct ahd_devinfo
*devinfo
)
1382 static int warned_user
;
1386 if ((ahd
->user_discenable
& devinfo
->target_mask
) != 0) {
1387 if (ahd
->unit
>= NUM_ELEMENTS(aic79xx_tag_info
)) {
1389 if (warned_user
== 0) {
1391 "aic79xx: WARNING: Insufficient tag_info instances\n"
1392 "aic79xx: for installed controllers. Using defaults\n"
1393 "aic79xx: Please update the aic79xx_tag_info array in\n"
1394 "aic79xx: the aic79xx_osm.c source file.\n");
1397 tags
= AHD_MAX_QUEUE
;
1399 adapter_tag_info_t
*tag_info
;
1401 tag_info
= &aic79xx_tag_info
[ahd
->unit
];
1402 tags
= tag_info
->tag_commands
[devinfo
->target_offset
];
1403 if (tags
> AHD_MAX_QUEUE
)
1404 tags
= AHD_MAX_QUEUE
;
1411 * Determines the queue depth for a given device.
1414 ahd_linux_device_queue_depth(struct scsi_device
*sdev
)
1416 struct ahd_devinfo devinfo
;
1418 struct ahd_softc
*ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
1420 ahd_compile_devinfo(&devinfo
,
1422 sdev
->sdev_target
->id
, sdev
->lun
,
1423 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1425 tags
= ahd_linux_user_tagdepth(ahd
, &devinfo
);
1426 if (tags
!= 0 && sdev
->tagged_supported
!= 0) {
1428 ahd_set_tags(ahd
, &devinfo
, AHD_QUEUE_TAGGED
);
1429 ahd_print_devinfo(ahd
, &devinfo
);
1430 printf("Tagged Queuing enabled. Depth %d\n", tags
);
1432 ahd_set_tags(ahd
, &devinfo
, AHD_QUEUE_NONE
);
1437 ahd_linux_run_command(struct ahd_softc
*ahd
, struct ahd_linux_device
*dev
,
1438 struct scsi_cmnd
*cmd
)
1441 struct hardware_scb
*hscb
;
1442 struct ahd_initiator_tinfo
*tinfo
;
1443 struct ahd_tmode_tstate
*tstate
;
1448 * Get an scb to use.
1450 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
1451 cmd
->device
->id
, &tstate
);
1452 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) == 0
1453 || (tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0) {
1454 col_idx
= AHD_NEVER_COL_IDX
;
1456 col_idx
= AHD_BUILD_COL_IDX(cmd
->device
->id
,
1459 if ((scb
= ahd_get_scb(ahd
, col_idx
)) == NULL
) {
1460 ahd
->flags
|= AHD_RESOURCE_SHORTAGE
;
1461 return SCSI_MLQUEUE_HOST_BUSY
;
1465 scb
->platform_data
->dev
= dev
;
1467 cmd
->host_scribble
= (char *)scb
;
1470 * Fill out basics of the HSCB.
1473 hscb
->scsiid
= BUILD_SCSIID(ahd
, cmd
);
1474 hscb
->lun
= cmd
->device
->lun
;
1475 scb
->hscb
->task_management
= 0;
1476 mask
= SCB_GET_TARGET_MASK(ahd
, scb
);
1478 if ((ahd
->user_discenable
& mask
) != 0)
1479 hscb
->control
|= DISCENB
;
1481 if ((tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0)
1482 scb
->flags
|= SCB_PACKETIZED
;
1484 if ((tstate
->auto_negotiate
& mask
) != 0) {
1485 scb
->flags
|= SCB_AUTO_NEGOTIATE
;
1486 scb
->hscb
->control
|= MK_MESSAGE
;
1487 } else if (cmd
->cmnd
[0] == INQUIRY
1488 && (tinfo
->curr
.offset
!= 0
1489 || tinfo
->curr
.width
!= MSG_EXT_WDTR_BUS_8_BIT
1490 || tinfo
->curr
.ppr_options
!= 0)
1491 && (tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
)==0) {
1493 * The SCSI spec requires inquiry
1494 * commands to complete without
1495 * reporting unit attention conditions.
1496 * Because of this, an inquiry command
1497 * that occurs just after a device is
1498 * reset will result in a data phase
1499 * with mismatched negotiated rates.
1500 * The core already forces a renegotiation
1501 * for reset events that are visible to
1502 * our controller or that we initiate,
1503 * but a third party device reset or a
1504 * hot-plug insertion can still cause this
1505 * issue. Therefore, we force a re-negotiation
1506 * for every inquiry command unless we
1509 scb
->flags
|= SCB_NEGOTIATE
;
1510 scb
->hscb
->control
|= MK_MESSAGE
;
1513 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) != 0) {
1515 uint8_t tag_msgs
[2];
1517 msg_bytes
= scsi_populate_tag_msg(cmd
, tag_msgs
);
1518 if (msg_bytes
&& tag_msgs
[0] != MSG_SIMPLE_TASK
) {
1519 hscb
->control
|= tag_msgs
[0];
1520 if (tag_msgs
[0] == MSG_ORDERED_TASK
)
1521 dev
->commands_since_idle_or_otag
= 0;
1523 if (dev
->commands_since_idle_or_otag
== AHD_OTAG_THRESH
1524 && (dev
->flags
& AHD_DEV_Q_TAGGED
) != 0) {
1525 hscb
->control
|= MSG_ORDERED_TASK
;
1526 dev
->commands_since_idle_or_otag
= 0;
1528 hscb
->control
|= MSG_SIMPLE_TASK
;
1532 hscb
->cdb_len
= cmd
->cmd_len
;
1533 memcpy(hscb
->shared_data
.idata
.cdb
, cmd
->cmnd
, hscb
->cdb_len
);
1535 scb
->platform_data
->xfer_len
= 0;
1536 ahd_set_residual(scb
, 0);
1537 ahd_set_sense_residual(scb
, 0);
1539 if (cmd
->use_sg
!= 0) {
1541 struct scatterlist
*cur_seg
;
1545 cur_seg
= (struct scatterlist
*)cmd
->request_buffer
;
1546 dir
= cmd
->sc_data_direction
;
1547 nseg
= pci_map_sg(ahd
->dev_softc
, cur_seg
,
1549 scb
->platform_data
->xfer_len
= 0;
1550 for (sg
= scb
->sg_list
; nseg
> 0; nseg
--, cur_seg
++) {
1554 addr
= sg_dma_address(cur_seg
);
1555 len
= sg_dma_len(cur_seg
);
1556 scb
->platform_data
->xfer_len
+= len
;
1557 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
, len
,
1560 } else if (cmd
->request_bufflen
!= 0) {
1566 dir
= cmd
->sc_data_direction
;
1567 addr
= pci_map_single(ahd
->dev_softc
,
1568 cmd
->request_buffer
,
1569 cmd
->request_bufflen
, dir
);
1570 scb
->platform_data
->xfer_len
= cmd
->request_bufflen
;
1571 scb
->platform_data
->buf_busaddr
= addr
;
1572 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
,
1573 cmd
->request_bufflen
, /*last*/TRUE
);
1576 LIST_INSERT_HEAD(&ahd
->pending_scbs
, scb
, pending_links
);
1579 dev
->commands_issued
++;
1581 if ((dev
->flags
& AHD_DEV_PERIODIC_OTAG
) != 0)
1582 dev
->commands_since_idle_or_otag
++;
1583 scb
->flags
|= SCB_ACTIVE
;
1584 ahd_queue_scb(ahd
, scb
);
1590 * SCSI controller interrupt handler.
1593 ahd_linux_isr(int irq
, void *dev_id
, struct pt_regs
* regs
)
1595 struct ahd_softc
*ahd
;
1599 ahd
= (struct ahd_softc
*) dev_id
;
1600 ahd_lock(ahd
, &flags
);
1601 ours
= ahd_intr(ahd
);
1602 ahd_unlock(ahd
, &flags
);
1603 return IRQ_RETVAL(ours
);
1607 ahd_platform_flushwork(struct ahd_softc
*ahd
)
1613 ahd_send_async(struct ahd_softc
*ahd
, char channel
,
1614 u_int target
, u_int lun
, ac_code code
, void *arg
)
1617 case AC_TRANSFER_NEG
:
1620 struct scsi_target
*starget
;
1621 struct ahd_linux_target
*targ
;
1622 struct info_str info
;
1623 struct ahd_initiator_tinfo
*tinfo
;
1624 struct ahd_tmode_tstate
*tstate
;
1625 unsigned int target_ppr_options
;
1627 BUG_ON(target
== CAM_TARGET_WILDCARD
);
1630 info
.length
= sizeof(buf
);
1633 tinfo
= ahd_fetch_transinfo(ahd
, channel
, ahd
->our_id
,
1637 * Don't bother reporting results while
1638 * negotiations are still pending.
1640 if (tinfo
->curr
.period
!= tinfo
->goal
.period
1641 || tinfo
->curr
.width
!= tinfo
->goal
.width
1642 || tinfo
->curr
.offset
!= tinfo
->goal
.offset
1643 || tinfo
->curr
.ppr_options
!= tinfo
->goal
.ppr_options
)
1644 if (bootverbose
== 0)
1648 * Don't bother reporting results that
1649 * are identical to those last reported.
1651 starget
= ahd
->platform_data
->starget
[target
];
1652 if (starget
== NULL
)
1654 targ
= scsi_transport_target_data(starget
);
1656 target_ppr_options
=
1657 (spi_dt(starget
) ? MSG_EXT_PPR_DT_REQ
: 0)
1658 + (spi_qas(starget
) ? MSG_EXT_PPR_QAS_REQ
: 0)
1659 + (spi_iu(starget
) ? MSG_EXT_PPR_IU_REQ
: 0)
1660 + (spi_rd_strm(starget
) ? MSG_EXT_PPR_RD_STRM
: 0)
1661 + (spi_pcomp_en(starget
) ? MSG_EXT_PPR_PCOMP_EN
: 0)
1662 + (spi_rti(starget
) ? MSG_EXT_PPR_RTI
: 0)
1663 + (spi_wr_flow(starget
) ? MSG_EXT_PPR_WR_FLOW
: 0)
1664 + (spi_hold_mcs(starget
) ? MSG_EXT_PPR_HOLD_MCS
: 0);
1666 if (tinfo
->curr
.period
== spi_period(starget
)
1667 && tinfo
->curr
.width
== spi_width(starget
)
1668 && tinfo
->curr
.offset
== spi_offset(starget
)
1669 && tinfo
->curr
.ppr_options
== target_ppr_options
)
1670 if (bootverbose
== 0)
1673 spi_period(starget
) = tinfo
->curr
.period
;
1674 spi_width(starget
) = tinfo
->curr
.width
;
1675 spi_offset(starget
) = tinfo
->curr
.offset
;
1676 spi_dt(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_DT_REQ
? 1 : 0;
1677 spi_qas(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_QAS_REQ
? 1 : 0;
1678 spi_iu(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
? 1 : 0;
1679 spi_rd_strm(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_RD_STRM
? 1 : 0;
1680 spi_pcomp_en(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_PCOMP_EN
? 1 : 0;
1681 spi_rti(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_RTI
? 1 : 0;
1682 spi_wr_flow(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_WR_FLOW
? 1 : 0;
1683 spi_hold_mcs(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_HOLD_MCS
? 1 : 0;
1684 spi_display_xfer_agreement(starget
);
1689 WARN_ON(lun
!= CAM_LUN_WILDCARD
);
1690 scsi_report_device_reset(ahd
->platform_data
->host
,
1691 channel
- 'A', target
);
1695 if (ahd
->platform_data
->host
!= NULL
) {
1696 scsi_report_bus_reset(ahd
->platform_data
->host
,
1701 panic("ahd_send_async: Unexpected async event");
1706 * Calls the higher level scsi done function and frees the scb.
1709 ahd_done(struct ahd_softc
*ahd
, struct scb
*scb
)
1711 struct scsi_cmnd
*cmd
;
1712 struct ahd_linux_device
*dev
;
1714 if ((scb
->flags
& SCB_ACTIVE
) == 0) {
1715 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb
));
1716 ahd_dump_card_state(ahd
);
1717 panic("Stopping for safety");
1719 LIST_REMOVE(scb
, pending_links
);
1721 dev
= scb
->platform_data
->dev
;
1724 if ((cmd
->result
& (CAM_DEV_QFRZN
<< 16)) != 0) {
1725 cmd
->result
&= ~(CAM_DEV_QFRZN
<< 16);
1728 ahd_linux_unmap_scb(ahd
, scb
);
1731 * Guard against stale sense data.
1732 * The Linux mid-layer assumes that sense
1733 * was retrieved anytime the first byte of
1734 * the sense buffer looks "sane".
1736 cmd
->sense_buffer
[0] = 0;
1737 if (ahd_get_transaction_status(scb
) == CAM_REQ_INPROG
) {
1738 uint32_t amount_xferred
;
1741 ahd_get_transfer_length(scb
) - ahd_get_residual(scb
);
1742 if ((scb
->flags
& SCB_TRANSMISSION_ERROR
) != 0) {
1744 if ((ahd_debug
& AHD_SHOW_MISC
) != 0) {
1745 ahd_print_path(ahd
, scb
);
1746 printf("Set CAM_UNCOR_PARITY\n");
1749 ahd_set_transaction_status(scb
, CAM_UNCOR_PARITY
);
1750 #ifdef AHD_REPORT_UNDERFLOWS
1752 * This code is disabled by default as some
1753 * clients of the SCSI system do not properly
1754 * initialize the underflow parameter. This
1755 * results in spurious termination of commands
1756 * that complete as expected (e.g. underflow is
1757 * allowed as command can return variable amounts
1760 } else if (amount_xferred
< scb
->io_ctx
->underflow
) {
1763 ahd_print_path(ahd
, scb
);
1765 for (i
= 0; i
< scb
->io_ctx
->cmd_len
; i
++)
1766 printf(" 0x%x", scb
->io_ctx
->cmnd
[i
]);
1768 ahd_print_path(ahd
, scb
);
1769 printf("Saw underflow (%ld of %ld bytes). "
1770 "Treated as error\n",
1771 ahd_get_residual(scb
),
1772 ahd_get_transfer_length(scb
));
1773 ahd_set_transaction_status(scb
, CAM_DATA_RUN_ERR
);
1776 ahd_set_transaction_status(scb
, CAM_REQ_CMP
);
1778 } else if (ahd_get_transaction_status(scb
) == CAM_SCSI_STATUS_ERROR
) {
1779 ahd_linux_handle_scsi_status(ahd
, cmd
->device
, scb
);
1782 if (dev
->openings
== 1
1783 && ahd_get_transaction_status(scb
) == CAM_REQ_CMP
1784 && ahd_get_scsi_status(scb
) != SCSI_STATUS_QUEUE_FULL
)
1785 dev
->tag_success_count
++;
1787 * Some devices deal with temporary internal resource
1788 * shortages by returning queue full. When the queue
1789 * full occurrs, we throttle back. Slowly try to get
1790 * back to our previous queue depth.
1792 if ((dev
->openings
+ dev
->active
) < dev
->maxtags
1793 && dev
->tag_success_count
> AHD_TAG_SUCCESS_INTERVAL
) {
1794 dev
->tag_success_count
= 0;
1798 if (dev
->active
== 0)
1799 dev
->commands_since_idle_or_otag
= 0;
1801 if ((scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
1802 printf("Recovery SCB completes\n");
1803 if (ahd_get_transaction_status(scb
) == CAM_BDR_SENT
1804 || ahd_get_transaction_status(scb
) == CAM_REQ_ABORTED
)
1805 ahd_set_transaction_status(scb
, CAM_CMD_TIMEOUT
);
1806 if ((ahd
->platform_data
->flags
& AHD_SCB_UP_EH_SEM
) != 0) {
1807 ahd
->platform_data
->flags
&= ~AHD_SCB_UP_EH_SEM
;
1808 up(&ahd
->platform_data
->eh_sem
);
1812 ahd_free_scb(ahd
, scb
);
1813 ahd_linux_queue_cmd_complete(ahd
, cmd
);
1817 ahd_linux_handle_scsi_status(struct ahd_softc
*ahd
,
1818 struct scsi_device
*sdev
, struct scb
*scb
)
1820 struct ahd_devinfo devinfo
;
1821 struct ahd_linux_device
*dev
= scsi_transport_device_data(sdev
);
1823 ahd_compile_devinfo(&devinfo
,
1825 sdev
->sdev_target
->id
, sdev
->lun
,
1826 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1830 * We don't currently trust the mid-layer to
1831 * properly deal with queue full or busy. So,
1832 * when one occurs, we tell the mid-layer to
1833 * unconditionally requeue the command to us
1834 * so that we can retry it ourselves. We also
1835 * implement our own throttling mechanism so
1836 * we don't clobber the device with too many
1839 switch (ahd_get_scsi_status(scb
)) {
1842 case SCSI_STATUS_CHECK_COND
:
1843 case SCSI_STATUS_CMD_TERMINATED
:
1845 struct scsi_cmnd
*cmd
;
1848 * Copy sense information to the OS's cmd
1849 * structure if it is available.
1852 if ((scb
->flags
& (SCB_SENSE
|SCB_PKT_SENSE
)) != 0) {
1853 struct scsi_status_iu_header
*siu
;
1857 if (scb
->flags
& SCB_SENSE
) {
1858 sense_size
= MIN(sizeof(struct scsi_sense_data
)
1859 - ahd_get_sense_residual(scb
),
1860 sizeof(cmd
->sense_buffer
));
1864 * Copy only the sense data into the provided
1867 siu
= (struct scsi_status_iu_header
*)
1869 sense_size
= MIN(scsi_4btoul(siu
->sense_length
),
1870 sizeof(cmd
->sense_buffer
));
1871 sense_offset
= SIU_SENSE_OFFSET(siu
);
1874 memset(cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
1875 memcpy(cmd
->sense_buffer
,
1876 ahd_get_sense_buf(ahd
, scb
)
1877 + sense_offset
, sense_size
);
1878 cmd
->result
|= (DRIVER_SENSE
<< 24);
1881 if (ahd_debug
& AHD_SHOW_SENSE
) {
1884 printf("Copied %d bytes of sense data at %d:",
1885 sense_size
, sense_offset
);
1886 for (i
= 0; i
< sense_size
; i
++) {
1889 printf("0x%x ", cmd
->sense_buffer
[i
]);
1897 case SCSI_STATUS_QUEUE_FULL
:
1899 * By the time the core driver has returned this
1900 * command, all other commands that were queued
1901 * to us but not the device have been returned.
1902 * This ensures that dev->active is equal to
1903 * the number of commands actually queued to
1906 dev
->tag_success_count
= 0;
1907 if (dev
->active
!= 0) {
1909 * Drop our opening count to the number
1910 * of commands currently outstanding.
1914 if ((ahd_debug
& AHD_SHOW_QFULL
) != 0) {
1915 ahd_print_path(ahd
, scb
);
1916 printf("Dropping tag count to %d\n",
1920 if (dev
->active
== dev
->tags_on_last_queuefull
) {
1922 dev
->last_queuefull_same_count
++;
1924 * If we repeatedly see a queue full
1925 * at the same queue depth, this
1926 * device has a fixed number of tag
1927 * slots. Lock in this tag depth
1928 * so we stop seeing queue fulls from
1931 if (dev
->last_queuefull_same_count
1932 == AHD_LOCK_TAGS_COUNT
) {
1933 dev
->maxtags
= dev
->active
;
1934 ahd_print_path(ahd
, scb
);
1935 printf("Locking max tag count at %d\n",
1939 dev
->tags_on_last_queuefull
= dev
->active
;
1940 dev
->last_queuefull_same_count
= 0;
1942 ahd_set_transaction_status(scb
, CAM_REQUEUE_REQ
);
1943 ahd_set_scsi_status(scb
, SCSI_STATUS_OK
);
1944 ahd_platform_set_tags(ahd
, &devinfo
,
1945 (dev
->flags
& AHD_DEV_Q_BASIC
)
1946 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1950 * Drop down to a single opening, and treat this
1951 * as if the target returned BUSY SCSI status.
1954 ahd_platform_set_tags(ahd
, &devinfo
,
1955 (dev
->flags
& AHD_DEV_Q_BASIC
)
1956 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1957 ahd_set_scsi_status(scb
, SCSI_STATUS_BUSY
);
1962 ahd_linux_queue_cmd_complete(struct ahd_softc
*ahd
, struct scsi_cmnd
*cmd
)
1965 * Map CAM error codes into Linux Error codes. We
1966 * avoid the conversion so that the DV code has the
1967 * full error information available when making
1968 * state change decisions.
1974 status
= ahd_cmd_get_transaction_status(cmd
);
1976 case CAM_REQ_INPROG
:
1978 case CAM_SCSI_STATUS_ERROR
:
1979 new_status
= DID_OK
;
1981 case CAM_REQ_ABORTED
:
1982 new_status
= DID_ABORT
;
1985 new_status
= DID_BUS_BUSY
;
1987 case CAM_REQ_INVALID
:
1988 case CAM_PATH_INVALID
:
1989 new_status
= DID_BAD_TARGET
;
1991 case CAM_SEL_TIMEOUT
:
1992 new_status
= DID_NO_CONNECT
;
1994 case CAM_SCSI_BUS_RESET
:
1996 new_status
= DID_RESET
;
1998 case CAM_UNCOR_PARITY
:
1999 new_status
= DID_PARITY
;
2001 case CAM_CMD_TIMEOUT
:
2002 new_status
= DID_TIME_OUT
;
2005 case CAM_REQ_CMP_ERR
:
2006 case CAM_AUTOSENSE_FAIL
:
2008 case CAM_DATA_RUN_ERR
:
2009 case CAM_UNEXP_BUSFREE
:
2010 case CAM_SEQUENCE_FAIL
:
2011 case CAM_CCB_LEN_ERR
:
2012 case CAM_PROVIDE_FAIL
:
2013 case CAM_REQ_TERMIO
:
2014 case CAM_UNREC_HBA_ERROR
:
2015 case CAM_REQ_TOO_BIG
:
2016 new_status
= DID_ERROR
;
2018 case CAM_REQUEUE_REQ
:
2019 new_status
= DID_REQUEUE
;
2022 /* We should never get here */
2023 new_status
= DID_ERROR
;
2027 ahd_cmd_set_transaction_status(cmd
, new_status
);
2030 cmd
->scsi_done(cmd
);
2034 ahd_linux_sem_timeout(u_long arg
)
2036 struct ahd_softc
*ahd
;
2039 ahd
= (struct ahd_softc
*)arg
;
2042 if ((ahd
->platform_data
->flags
& AHD_SCB_UP_EH_SEM
) != 0) {
2043 ahd
->platform_data
->flags
&= ~AHD_SCB_UP_EH_SEM
;
2044 up(&ahd
->platform_data
->eh_sem
);
2046 ahd_unlock(ahd
, &s
);
2050 ahd_freeze_simq(struct ahd_softc
*ahd
)
2055 ahd
->platform_data
->qfrozen
++;
2056 if (ahd
->platform_data
->qfrozen
== 1) {
2057 scsi_block_requests(ahd
->platform_data
->host
);
2058 ahd_platform_abort_scbs(ahd
, CAM_TARGET_WILDCARD
, ALL_CHANNELS
,
2059 CAM_LUN_WILDCARD
, SCB_LIST_NULL
,
2060 ROLE_INITIATOR
, CAM_REQUEUE_REQ
);
2062 ahd_unlock(ahd
, &s
);
2066 ahd_release_simq(struct ahd_softc
*ahd
)
2073 if (ahd
->platform_data
->qfrozen
> 0)
2074 ahd
->platform_data
->qfrozen
--;
2075 if (ahd
->platform_data
->qfrozen
== 0) {
2078 ahd_unlock(ahd
, &s
);
2080 * There is still a race here. The mid-layer
2081 * should keep its own freeze count and use
2082 * a bottom half handler to run the queues
2083 * so we can unblock with our own lock held.
2086 scsi_unblock_requests(ahd
->platform_data
->host
);
2090 ahd_linux_queue_recovery_cmd(struct scsi_cmnd
*cmd
, scb_flag flag
)
2092 struct ahd_softc
*ahd
;
2093 struct ahd_linux_device
*dev
;
2094 struct scb
*pending_scb
;
2096 u_int active_scbptr
;
2106 ahd_mode_state saved_modes
;
2107 unsigned long flags
;
2112 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
2114 scmd_printk(KERN_INFO
, cmd
,
2115 "Attempting to queue a%s message:",
2116 flag
== SCB_ABORT
? "n ABORT" : " TARGET RESET");
2119 for (cdb_byte
= 0; cdb_byte
< cmd
->cmd_len
; cdb_byte
++)
2120 printf(" 0x%x", cmd
->cmnd
[cdb_byte
]);
2123 ahd_lock(ahd
, &flags
);
2126 * First determine if we currently own this command.
2127 * Start by searching the device queue. If not found
2128 * there, check the pending_scb list. If not found
2129 * at all, and the system wanted us to just abort the
2130 * command, return success.
2132 dev
= scsi_transport_device_data(cmd
->device
);
2136 * No target device for this command exists,
2137 * so we must not still own the command.
2139 scmd_printk(KERN_INFO
, cmd
, "Is not an active device\n");
2145 * See if we can find a matching cmd in the pending list.
2147 LIST_FOREACH(pending_scb
, &ahd
->pending_scbs
, pending_links
) {
2148 if (pending_scb
->io_ctx
== cmd
)
2152 if (pending_scb
== NULL
&& flag
== SCB_DEVICE_RESET
) {
2154 /* Any SCB for this device will do for a target reset */
2155 LIST_FOREACH(pending_scb
, &ahd
->pending_scbs
, pending_links
) {
2156 if (ahd_match_scb(ahd
, pending_scb
,
2158 scmd_channel(cmd
) + 'A',
2160 SCB_LIST_NULL
, ROLE_INITIATOR
))
2165 if (pending_scb
== NULL
) {
2166 scmd_printk(KERN_INFO
, cmd
, "Command not found\n");
2170 if ((pending_scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
2172 * We can't queue two recovery actions using the same SCB
2179 * Ensure that the card doesn't do anything
2180 * behind our back. Also make sure that we
2181 * didn't "just" miss an interrupt that would
2184 was_paused
= ahd_is_paused(ahd
);
2185 ahd_pause_and_flushwork(ahd
);
2188 if ((pending_scb
->flags
& SCB_ACTIVE
) == 0) {
2189 scmd_printk(KERN_INFO
, cmd
, "Command already completed\n");
2193 printf("%s: At time of recovery, card was %spaused\n",
2194 ahd_name(ahd
), was_paused
? "" : "not ");
2195 ahd_dump_card_state(ahd
);
2197 disconnected
= TRUE
;
2198 if (flag
== SCB_ABORT
) {
2199 if (ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2200 cmd
->device
->channel
+ 'A',
2202 pending_scb
->hscb
->tag
,
2203 ROLE_INITIATOR
, CAM_REQ_ABORTED
,
2204 SEARCH_COMPLETE
) > 0) {
2205 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
2206 ahd_name(ahd
), cmd
->device
->channel
,
2207 cmd
->device
->id
, cmd
->device
->lun
);
2211 } else if (ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2212 cmd
->device
->channel
+ 'A',
2213 cmd
->device
->lun
, pending_scb
->hscb
->tag
,
2214 ROLE_INITIATOR
, /*status*/0,
2215 SEARCH_COUNT
) > 0) {
2216 disconnected
= FALSE
;
2219 saved_modes
= ahd_save_modes(ahd
);
2220 ahd_set_modes(ahd
, AHD_MODE_SCSI
, AHD_MODE_SCSI
);
2221 last_phase
= ahd_inb(ahd
, LASTPHASE
);
2222 saved_scbptr
= ahd_get_scbptr(ahd
);
2223 active_scbptr
= saved_scbptr
;
2224 if (disconnected
&& ((last_phase
!= P_BUSFREE
) ||
2225 (ahd_inb(ahd
, SEQ_FLAGS
) & NOT_IDENTIFIED
) == 0)) {
2226 struct scb
*bus_scb
;
2228 bus_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2229 if (bus_scb
== pending_scb
)
2230 disconnected
= FALSE
;
2231 else if (flag
!= SCB_ABORT
2232 && ahd_inb(ahd
, SAVED_SCSIID
) == pending_scb
->hscb
->scsiid
2233 && ahd_inb(ahd
, SAVED_LUN
) == SCB_GET_LUN(pending_scb
))
2234 disconnected
= FALSE
;
2238 * At this point, pending_scb is the scb associated with the
2239 * passed in command. That command is currently active on the
2240 * bus or is in the disconnected state.
2242 saved_scsiid
= ahd_inb(ahd
, SAVED_SCSIID
);
2243 if (SCB_GET_TAG(pending_scb
) == active_scbptr
2244 || (flag
== SCB_DEVICE_RESET
2245 && SCSIID_TARGET(ahd
, saved_scsiid
) == scmd_id(cmd
))) {
2248 * We're active on the bus, so assert ATN
2249 * and hope that the target responds.
2251 pending_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2252 pending_scb
->flags
|= SCB_RECOVERY_SCB
|SCB_DEVICE_RESET
;
2253 ahd_outb(ahd
, MSG_OUT
, HOST_MSG
);
2254 ahd_outb(ahd
, SCSISIGO
, last_phase
|ATNO
);
2255 scmd_printk(KERN_INFO
, cmd
, "BDR message in message buffer\n");
2257 } else if (last_phase
!= P_BUSFREE
2258 && ahd_inb(ahd
, SCSIPHASE
) == 0) {
2260 * SCB is not identified, there
2261 * is no pending REQ, and the sequencer
2262 * has not seen a busfree. Looks like
2263 * a stuck connection waiting to
2264 * go busfree. Reset the bus.
2266 found
= ahd_reset_channel(ahd
, cmd
->device
->channel
+ 'A',
2267 /*Initiate Reset*/TRUE
);
2268 printf("%s: Issued Channel %c Bus Reset. "
2269 "%d SCBs aborted\n", ahd_name(ahd
),
2270 cmd
->device
->channel
+ 'A', found
);
2271 } else if (disconnected
) {
2274 * Actually re-queue this SCB in an attempt
2275 * to select the device before it reconnects.
2277 pending_scb
->flags
|= SCB_RECOVERY_SCB
|flag
;
2278 ahd_set_scbptr(ahd
, SCB_GET_TAG(pending_scb
));
2279 pending_scb
->hscb
->cdb_len
= 0;
2280 pending_scb
->hscb
->task_attribute
= 0;
2281 pending_scb
->hscb
->task_management
= SIU_TASKMGMT_ABORT_TASK
;
2283 if ((pending_scb
->flags
& SCB_PACKETIZED
) != 0) {
2285 * Mark the SCB has having an outstanding
2286 * task management function. Should the command
2287 * complete normally before the task management
2288 * function can be sent, the host will be notified
2289 * to abort our requeued SCB.
2291 ahd_outb(ahd
, SCB_TASK_MANAGEMENT
,
2292 pending_scb
->hscb
->task_management
);
2295 * If non-packetized, set the MK_MESSAGE control
2296 * bit indicating that we desire to send a message.
2297 * We also set the disconnected flag since there is
2298 * no guarantee that our SCB control byte matches
2299 * the version on the card. We don't want the
2300 * sequencer to abort the command thinking an
2301 * unsolicited reselection occurred.
2303 pending_scb
->hscb
->control
|= MK_MESSAGE
|DISCONNECTED
;
2306 * The sequencer will never re-reference the
2307 * in-core SCB. To make sure we are notified
2308 * during reslection, set the MK_MESSAGE flag in
2309 * the card's copy of the SCB.
2311 ahd_outb(ahd
, SCB_CONTROL
,
2312 ahd_inb(ahd
, SCB_CONTROL
)|MK_MESSAGE
);
2316 * Clear out any entries in the QINFIFO first
2317 * so we are the next SCB for this target
2320 ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2321 cmd
->device
->channel
+ 'A', cmd
->device
->lun
,
2322 SCB_LIST_NULL
, ROLE_INITIATOR
,
2323 CAM_REQUEUE_REQ
, SEARCH_COMPLETE
);
2324 ahd_qinfifo_requeue_tail(ahd
, pending_scb
);
2325 ahd_set_scbptr(ahd
, saved_scbptr
);
2326 ahd_print_path(ahd
, pending_scb
);
2327 printf("Device is disconnected, re-queuing SCB\n");
2330 scmd_printk(KERN_INFO
, cmd
, "Unable to deliver message\n");
2337 * Our assumption is that if we don't have the command, no
2338 * recovery action was required, so we return success. Again,
2339 * the semantics of the mid-layer recovery engine are not
2340 * well defined, so this may change in time.
2347 struct timer_list timer
;
2350 ahd
->platform_data
->flags
|= AHD_SCB_UP_EH_SEM
;
2351 ahd_unlock(ahd
, &flags
);
2354 timer
.data
= (u_long
)ahd
;
2355 timer
.expires
= jiffies
+ (5 * HZ
);
2356 timer
.function
= ahd_linux_sem_timeout
;
2358 printf("%s: Recovery code sleeping\n", ahd_name(ahd
));
2359 down(&ahd
->platform_data
->eh_sem
);
2360 printf("%s: Recovery code awake\n", ahd_name(ahd
));
2361 ret
= del_timer_sync(&timer
);
2363 printf("%s: Timer Expired (active %d)\n",
2364 ahd_name(ahd
), dev
->active
);
2368 ahd_unlock(ahd
, &flags
);
2373 static void ahd_linux_set_width(struct scsi_target
*starget
, int width
)
2375 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2376 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2377 struct ahd_devinfo devinfo
;
2378 unsigned long flags
;
2380 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2381 starget
->channel
+ 'A', ROLE_INITIATOR
);
2382 ahd_lock(ahd
, &flags
);
2383 ahd_set_width(ahd
, &devinfo
, width
, AHD_TRANS_GOAL
, FALSE
);
2384 ahd_unlock(ahd
, &flags
);
2387 static void ahd_linux_set_period(struct scsi_target
*starget
, int period
)
2389 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2390 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2391 struct ahd_tmode_tstate
*tstate
;
2392 struct ahd_initiator_tinfo
*tinfo
2393 = ahd_fetch_transinfo(ahd
,
2394 starget
->channel
+ 'A',
2395 shost
->this_id
, starget
->id
, &tstate
);
2396 struct ahd_devinfo devinfo
;
2397 unsigned int ppr_options
= tinfo
->goal
.ppr_options
;
2399 unsigned long flags
;
2400 unsigned long offset
= tinfo
->goal
.offset
;
2403 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2404 printf("%s: set period to %d\n", ahd_name(ahd
), period
);
2407 offset
= MAX_OFFSET
;
2412 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2414 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2417 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2419 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2420 starget
->channel
+ 'A', ROLE_INITIATOR
);
2422 /* all PPR requests apart from QAS require wide transfers */
2423 if (ppr_options
& ~MSG_EXT_PPR_QAS_REQ
) {
2424 if (spi_width(starget
) == 0)
2425 ppr_options
&= MSG_EXT_PPR_QAS_REQ
;
2428 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2429 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2431 ahd_lock(ahd
, &flags
);
2432 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
,
2433 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2434 ahd_unlock(ahd
, &flags
);
2437 static void ahd_linux_set_offset(struct scsi_target
*starget
, int offset
)
2439 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2440 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2441 struct ahd_tmode_tstate
*tstate
;
2442 struct ahd_initiator_tinfo
*tinfo
2443 = ahd_fetch_transinfo(ahd
,
2444 starget
->channel
+ 'A',
2445 shost
->this_id
, starget
->id
, &tstate
);
2446 struct ahd_devinfo devinfo
;
2447 unsigned int ppr_options
= 0;
2448 unsigned int period
= 0;
2449 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2450 unsigned long flags
;
2453 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2454 printf("%s: set offset to %d\n", ahd_name(ahd
), offset
);
2457 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2458 starget
->channel
+ 'A', ROLE_INITIATOR
);
2460 period
= tinfo
->goal
.period
;
2461 ppr_options
= tinfo
->goal
.ppr_options
;
2462 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2463 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2466 ahd_lock(ahd
, &flags
);
2467 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
, ppr_options
,
2468 AHD_TRANS_GOAL
, FALSE
);
2469 ahd_unlock(ahd
, &flags
);
2472 static void ahd_linux_set_dt(struct scsi_target
*starget
, int dt
)
2474 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2475 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2476 struct ahd_tmode_tstate
*tstate
;
2477 struct ahd_initiator_tinfo
*tinfo
2478 = ahd_fetch_transinfo(ahd
,
2479 starget
->channel
+ 'A',
2480 shost
->this_id
, starget
->id
, &tstate
);
2481 struct ahd_devinfo devinfo
;
2482 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2483 & ~MSG_EXT_PPR_DT_REQ
;
2484 unsigned int period
= tinfo
->goal
.period
;
2485 unsigned int width
= tinfo
->goal
.width
;
2486 unsigned long flags
;
2489 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2490 printf("%s: %s DT\n", ahd_name(ahd
),
2491 dt
? "enabling" : "disabling");
2494 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2496 ahd_linux_set_width(starget
, 1);
2499 period
= 10; /* If resetting DT, period must be >= 25ns */
2500 /* IU is invalid without DT set */
2501 ppr_options
&= ~MSG_EXT_PPR_IU_REQ
;
2503 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2504 starget
->channel
+ 'A', ROLE_INITIATOR
);
2505 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2506 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2508 ahd_lock(ahd
, &flags
);
2509 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2510 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2511 ahd_unlock(ahd
, &flags
);
2514 static void ahd_linux_set_qas(struct scsi_target
*starget
, int qas
)
2516 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2517 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2518 struct ahd_tmode_tstate
*tstate
;
2519 struct ahd_initiator_tinfo
*tinfo
2520 = ahd_fetch_transinfo(ahd
,
2521 starget
->channel
+ 'A',
2522 shost
->this_id
, starget
->id
, &tstate
);
2523 struct ahd_devinfo devinfo
;
2524 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2525 & ~MSG_EXT_PPR_QAS_REQ
;
2526 unsigned int period
= tinfo
->goal
.period
;
2528 unsigned long flags
;
2531 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2532 printf("%s: %s QAS\n", ahd_name(ahd
),
2533 qas
? "enabling" : "disabling");
2537 ppr_options
|= MSG_EXT_PPR_QAS_REQ
;
2540 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2542 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2543 starget
->channel
+ 'A', ROLE_INITIATOR
);
2544 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2545 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2547 ahd_lock(ahd
, &flags
);
2548 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2549 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2550 ahd_unlock(ahd
, &flags
);
2553 static void ahd_linux_set_iu(struct scsi_target
*starget
, int iu
)
2555 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2556 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2557 struct ahd_tmode_tstate
*tstate
;
2558 struct ahd_initiator_tinfo
*tinfo
2559 = ahd_fetch_transinfo(ahd
,
2560 starget
->channel
+ 'A',
2561 shost
->this_id
, starget
->id
, &tstate
);
2562 struct ahd_devinfo devinfo
;
2563 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2564 & ~MSG_EXT_PPR_IU_REQ
;
2565 unsigned int period
= tinfo
->goal
.period
;
2567 unsigned long flags
;
2570 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2571 printf("%s: %s IU\n", ahd_name(ahd
),
2572 iu
? "enabling" : "disabling");
2576 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2577 ppr_options
|= MSG_EXT_PPR_DT_REQ
; /* IU requires DT */
2580 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2582 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2583 starget
->channel
+ 'A', ROLE_INITIATOR
);
2584 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2585 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2587 ahd_lock(ahd
, &flags
);
2588 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2589 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2590 ahd_unlock(ahd
, &flags
);
2593 static void ahd_linux_set_rd_strm(struct scsi_target
*starget
, int rdstrm
)
2595 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2596 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2597 struct ahd_tmode_tstate
*tstate
;
2598 struct ahd_initiator_tinfo
*tinfo
2599 = ahd_fetch_transinfo(ahd
,
2600 starget
->channel
+ 'A',
2601 shost
->this_id
, starget
->id
, &tstate
);
2602 struct ahd_devinfo devinfo
;
2603 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2604 & ~MSG_EXT_PPR_RD_STRM
;
2605 unsigned int period
= tinfo
->goal
.period
;
2606 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2607 unsigned long flags
;
2610 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2611 printf("%s: %s Read Streaming\n", ahd_name(ahd
),
2612 rdstrm
? "enabling" : "disabling");
2616 ppr_options
|= MSG_EXT_PPR_RD_STRM
;
2618 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2619 starget
->channel
+ 'A', ROLE_INITIATOR
);
2620 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2621 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2623 ahd_lock(ahd
, &flags
);
2624 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2625 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2626 ahd_unlock(ahd
, &flags
);
2629 static void ahd_linux_set_wr_flow(struct scsi_target
*starget
, int wrflow
)
2631 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2632 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2633 struct ahd_tmode_tstate
*tstate
;
2634 struct ahd_initiator_tinfo
*tinfo
2635 = ahd_fetch_transinfo(ahd
,
2636 starget
->channel
+ 'A',
2637 shost
->this_id
, starget
->id
, &tstate
);
2638 struct ahd_devinfo devinfo
;
2639 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2640 & ~MSG_EXT_PPR_WR_FLOW
;
2641 unsigned int period
= tinfo
->goal
.period
;
2642 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2643 unsigned long flags
;
2646 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2647 printf("%s: %s Write Flow Control\n", ahd_name(ahd
),
2648 wrflow
? "enabling" : "disabling");
2652 ppr_options
|= MSG_EXT_PPR_WR_FLOW
;
2654 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2655 starget
->channel
+ 'A', ROLE_INITIATOR
);
2656 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2657 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2659 ahd_lock(ahd
, &flags
);
2660 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2661 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2662 ahd_unlock(ahd
, &flags
);
2665 static void ahd_linux_set_rti(struct scsi_target
*starget
, int rti
)
2667 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2668 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2669 struct ahd_tmode_tstate
*tstate
;
2670 struct ahd_initiator_tinfo
*tinfo
2671 = ahd_fetch_transinfo(ahd
,
2672 starget
->channel
+ 'A',
2673 shost
->this_id
, starget
->id
, &tstate
);
2674 struct ahd_devinfo devinfo
;
2675 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2677 unsigned int period
= tinfo
->goal
.period
;
2678 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2679 unsigned long flags
;
2681 if ((ahd
->features
& AHD_RTI
) == 0) {
2683 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2684 printf("%s: RTI not available\n", ahd_name(ahd
));
2690 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2691 printf("%s: %s RTI\n", ahd_name(ahd
),
2692 rti
? "enabling" : "disabling");
2696 ppr_options
|= MSG_EXT_PPR_RTI
;
2698 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2699 starget
->channel
+ 'A', ROLE_INITIATOR
);
2700 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2701 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2703 ahd_lock(ahd
, &flags
);
2704 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2705 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2706 ahd_unlock(ahd
, &flags
);
2709 static void ahd_linux_set_pcomp_en(struct scsi_target
*starget
, int pcomp
)
2711 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2712 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2713 struct ahd_tmode_tstate
*tstate
;
2714 struct ahd_initiator_tinfo
*tinfo
2715 = ahd_fetch_transinfo(ahd
,
2716 starget
->channel
+ 'A',
2717 shost
->this_id
, starget
->id
, &tstate
);
2718 struct ahd_devinfo devinfo
;
2719 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2720 & ~MSG_EXT_PPR_PCOMP_EN
;
2721 unsigned int period
= tinfo
->goal
.period
;
2722 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2723 unsigned long flags
;
2726 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2727 printf("%s: %s Precompensation\n", ahd_name(ahd
),
2728 pcomp
? "Enable" : "Disable");
2732 ppr_options
|= MSG_EXT_PPR_PCOMP_EN
;
2734 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2735 starget
->channel
+ 'A', ROLE_INITIATOR
);
2736 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2737 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2739 ahd_lock(ahd
, &flags
);
2740 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2741 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2742 ahd_unlock(ahd
, &flags
);
2745 static void ahd_linux_set_hold_mcs(struct scsi_target
*starget
, int hold
)
2747 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2748 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2749 struct ahd_tmode_tstate
*tstate
;
2750 struct ahd_initiator_tinfo
*tinfo
2751 = ahd_fetch_transinfo(ahd
,
2752 starget
->channel
+ 'A',
2753 shost
->this_id
, starget
->id
, &tstate
);
2754 struct ahd_devinfo devinfo
;
2755 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2756 & ~MSG_EXT_PPR_HOLD_MCS
;
2757 unsigned int period
= tinfo
->goal
.period
;
2758 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2759 unsigned long flags
;
2762 ppr_options
|= MSG_EXT_PPR_HOLD_MCS
;
2764 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2765 starget
->channel
+ 'A', ROLE_INITIATOR
);
2766 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2767 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2769 ahd_lock(ahd
, &flags
);
2770 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2771 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2772 ahd_unlock(ahd
, &flags
);
2777 static struct spi_function_template ahd_linux_transport_functions
= {
2778 .set_offset
= ahd_linux_set_offset
,
2780 .set_period
= ahd_linux_set_period
,
2782 .set_width
= ahd_linux_set_width
,
2784 .set_dt
= ahd_linux_set_dt
,
2786 .set_iu
= ahd_linux_set_iu
,
2788 .set_qas
= ahd_linux_set_qas
,
2790 .set_rd_strm
= ahd_linux_set_rd_strm
,
2792 .set_wr_flow
= ahd_linux_set_wr_flow
,
2794 .set_rti
= ahd_linux_set_rti
,
2796 .set_pcomp_en
= ahd_linux_set_pcomp_en
,
2798 .set_hold_mcs
= ahd_linux_set_hold_mcs
,
2803 ahd_linux_init(void)
2808 * If we've been passed any parameters, process them now.
2811 aic79xx_setup(aic79xx
);
2813 ahd_linux_transport_template
=
2814 spi_attach_transport(&ahd_linux_transport_functions
);
2815 if (!ahd_linux_transport_template
)
2818 scsi_transport_reserve_target(ahd_linux_transport_template
,
2819 sizeof(struct ahd_linux_target
));
2820 scsi_transport_reserve_device(ahd_linux_transport_template
,
2821 sizeof(struct ahd_linux_device
));
2823 error
= ahd_linux_pci_init();
2825 spi_release_transport(ahd_linux_transport_template
);
2830 ahd_linux_exit(void)
2832 ahd_linux_pci_exit();
2833 spi_release_transport(ahd_linux_transport_template
);
2836 module_init(ahd_linux_init
);
2837 module_exit(ahd_linux_exit
);