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 int ahd_linux_queue_abort_cmd(struct scsi_cmnd
*cmd
);
377 static void ahd_linux_initialize_scsi_bus(struct ahd_softc
*ahd
);
378 static u_int
ahd_linux_user_tagdepth(struct ahd_softc
*ahd
,
379 struct ahd_devinfo
*devinfo
);
380 static void ahd_linux_device_queue_depth(struct scsi_device
*);
381 static int ahd_linux_run_command(struct ahd_softc
*,
382 struct ahd_linux_device
*,
384 static void ahd_linux_setup_tag_info_global(char *p
);
385 static int aic79xx_setup(char *c
);
387 static int ahd_linux_unit
;
390 /****************************** Inlines ***************************************/
391 static __inline
void ahd_linux_unmap_scb(struct ahd_softc
*, struct scb
*);
394 ahd_linux_unmap_scb(struct ahd_softc
*ahd
, struct scb
*scb
)
396 struct scsi_cmnd
*cmd
;
400 direction
= cmd
->sc_data_direction
;
401 ahd_sync_sglist(ahd
, scb
, BUS_DMASYNC_POSTWRITE
);
402 if (cmd
->use_sg
!= 0) {
403 struct scatterlist
*sg
;
405 sg
= (struct scatterlist
*)cmd
->request_buffer
;
406 pci_unmap_sg(ahd
->dev_softc
, sg
, cmd
->use_sg
, direction
);
407 } else if (cmd
->request_bufflen
!= 0) {
408 pci_unmap_single(ahd
->dev_softc
,
409 scb
->platform_data
->buf_busaddr
,
410 cmd
->request_bufflen
, direction
);
414 /******************************** Macros **************************************/
415 #define BUILD_SCSIID(ahd, cmd) \
416 (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id)
419 * Return a string describing the driver.
422 ahd_linux_info(struct Scsi_Host
*host
)
424 static char buffer
[512];
427 struct ahd_softc
*ahd
;
430 ahd
= *(struct ahd_softc
**)host
->hostdata
;
431 memset(bp
, 0, sizeof(buffer
));
432 strcpy(bp
, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
433 strcat(bp
, AIC79XX_DRIVER_VERSION
);
436 strcat(bp
, ahd
->description
);
439 ahd_controller_info(ahd
, ahd_info
);
440 strcat(bp
, ahd_info
);
447 * Queue an SCB to the controller.
450 ahd_linux_queue(struct scsi_cmnd
* cmd
, void (*scsi_done
) (struct scsi_cmnd
*))
452 struct ahd_softc
*ahd
;
453 struct ahd_linux_device
*dev
= scsi_transport_device_data(cmd
->device
);
454 int rtn
= SCSI_MLQUEUE_HOST_BUSY
;
456 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
458 cmd
->scsi_done
= scsi_done
;
459 cmd
->result
= CAM_REQ_INPROG
<< 16;
460 rtn
= ahd_linux_run_command(ahd
, dev
, cmd
);
465 static inline struct scsi_target
**
466 ahd_linux_target_in_softc(struct scsi_target
*starget
)
468 struct ahd_softc
*ahd
=
469 *((struct ahd_softc
**)dev_to_shost(&starget
->dev
)->hostdata
);
470 unsigned int target_offset
;
472 target_offset
= starget
->id
;
473 if (starget
->channel
!= 0)
476 return &ahd
->platform_data
->starget
[target_offset
];
480 ahd_linux_target_alloc(struct scsi_target
*starget
)
482 struct ahd_softc
*ahd
=
483 *((struct ahd_softc
**)dev_to_shost(&starget
->dev
)->hostdata
);
484 struct seeprom_config
*sc
= ahd
->seep_config
;
486 struct scsi_target
**ahd_targp
= ahd_linux_target_in_softc(starget
);
487 struct ahd_linux_target
*targ
= scsi_transport_target_data(starget
);
488 struct ahd_devinfo devinfo
;
489 struct ahd_initiator_tinfo
*tinfo
;
490 struct ahd_tmode_tstate
*tstate
;
491 char channel
= starget
->channel
+ 'A';
493 ahd_lock(ahd
, &flags
);
495 BUG_ON(*ahd_targp
!= NULL
);
497 *ahd_targp
= starget
;
498 memset(targ
, 0, sizeof(*targ
));
501 int flags
= sc
->device_flags
[starget
->id
];
503 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
504 starget
->id
, &tstate
);
506 if ((flags
& CFPACKETIZED
) == 0) {
507 /* Do not negotiate packetized transfers */
508 spi_rd_strm(starget
) = 0;
509 spi_pcomp_en(starget
) = 0;
510 spi_rti(starget
) = 0;
511 spi_wr_flow(starget
) = 0;
512 spi_hold_mcs(starget
) = 0;
514 if ((ahd
->features
& AHD_RTI
) == 0)
515 spi_rti(starget
) = 0;
518 if ((flags
& CFQAS
) == 0)
519 spi_qas(starget
) = 0;
521 /* Transinfo values have been set to BIOS settings */
522 spi_max_width(starget
) = (flags
& CFWIDEB
) ? 1 : 0;
523 spi_min_period(starget
) = tinfo
->user
.period
;
524 spi_max_offset(starget
) = tinfo
->user
.offset
;
527 tinfo
= ahd_fetch_transinfo(ahd
, channel
, ahd
->our_id
,
528 starget
->id
, &tstate
);
529 ahd_compile_devinfo(&devinfo
, ahd
->our_id
, starget
->id
,
530 CAM_LUN_WILDCARD
, channel
,
532 ahd_set_syncrate(ahd
, &devinfo
, 0, 0, 0,
533 AHD_TRANS_GOAL
, /*paused*/FALSE
);
534 ahd_set_width(ahd
, &devinfo
, MSG_EXT_WDTR_BUS_8_BIT
,
535 AHD_TRANS_GOAL
, /*paused*/FALSE
);
536 ahd_unlock(ahd
, &flags
);
542 ahd_linux_target_destroy(struct scsi_target
*starget
)
544 struct scsi_target
**ahd_targp
= ahd_linux_target_in_softc(starget
);
550 ahd_linux_slave_alloc(struct scsi_device
*sdev
)
552 struct ahd_softc
*ahd
=
553 *((struct ahd_softc
**)sdev
->host
->hostdata
);
554 struct scsi_target
*starget
= sdev
->sdev_target
;
555 struct ahd_linux_target
*targ
= scsi_transport_target_data(starget
);
556 struct ahd_linux_device
*dev
;
559 printf("%s: Slave Alloc %d\n", ahd_name(ahd
), sdev
->id
);
561 BUG_ON(targ
->sdev
[sdev
->lun
] != NULL
);
563 dev
= scsi_transport_device_data(sdev
);
564 memset(dev
, 0, sizeof(*dev
));
567 * We start out life using untagged
568 * transactions of which we allow one.
573 * Set maxtags to 0. This will be changed if we
574 * later determine that we are dealing with
575 * a tagged queuing capable device.
579 targ
->sdev
[sdev
->lun
] = sdev
;
585 ahd_linux_slave_configure(struct scsi_device
*sdev
)
587 struct ahd_softc
*ahd
;
589 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
591 sdev_printk(KERN_INFO
, sdev
, "Slave Configure\n");
593 ahd_linux_device_queue_depth(sdev
);
595 /* Initial Domain Validation */
596 if (!spi_initial_dv(sdev
->sdev_target
))
603 ahd_linux_slave_destroy(struct scsi_device
*sdev
)
605 struct ahd_softc
*ahd
;
606 struct ahd_linux_device
*dev
= scsi_transport_device_data(sdev
);
607 struct ahd_linux_target
*targ
= scsi_transport_target_data(sdev
->sdev_target
);
609 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
611 printf("%s: Slave Destroy %d\n", ahd_name(ahd
), sdev
->id
);
615 targ
->sdev
[sdev
->lun
] = NULL
;
619 #if defined(__i386__)
621 * Return the disk geometry for the given SCSI device.
624 ahd_linux_biosparam(struct scsi_device
*sdev
, struct block_device
*bdev
,
625 sector_t capacity
, int geom
[])
633 struct ahd_softc
*ahd
;
635 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
637 bh
= scsi_bios_ptable(bdev
);
639 ret
= scsi_partsize(bh
, capacity
,
640 &geom
[2], &geom
[0], &geom
[1]);
647 cylinders
= aic_sector_div(capacity
, heads
, sectors
);
649 if (aic79xx_extended
!= 0)
652 extended
= (ahd
->flags
& AHD_EXTENDED_TRANS_A
) != 0;
653 if (extended
&& cylinders
>= 1024) {
656 cylinders
= aic_sector_div(capacity
, heads
, sectors
);
666 * Abort the current SCSI command(s).
669 ahd_linux_abort(struct scsi_cmnd
*cmd
)
673 error
= ahd_linux_queue_abort_cmd(cmd
);
679 * Attempt to send a target reset message to the device that timed out.
682 ahd_linux_dev_reset(struct scsi_cmnd
*cmd
)
684 struct ahd_softc
*ahd
;
685 struct ahd_linux_device
*dev
;
686 struct scb
*reset_scb
;
688 int retval
= SUCCESS
;
691 struct ahd_initiator_tinfo
*tinfo
;
692 struct ahd_tmode_tstate
*tstate
;
694 DECLARE_COMPLETION(done
);
699 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
701 scmd_printk(KERN_INFO
, cmd
,
702 "Attempting to queue a TARGET RESET message:");
705 for (cdb_byte
= 0; cdb_byte
< cmd
->cmd_len
; cdb_byte
++)
706 printf(" 0x%x", cmd
->cmnd
[cdb_byte
]);
710 * Determine if we currently own this command.
712 dev
= scsi_transport_device_data(cmd
->device
);
716 * No target device for this command exists,
717 * so we must not still own the command.
719 scmd_printk(KERN_INFO
, cmd
, "Is not an active device\n");
724 * Generate us a new SCB
726 reset_scb
= ahd_get_scb(ahd
, AHD_NEVER_COL_IDX
);
728 scmd_printk(KERN_INFO
, cmd
, "No SCB available\n");
732 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
733 cmd
->device
->id
, &tstate
);
734 reset_scb
->io_ctx
= cmd
;
735 reset_scb
->platform_data
->dev
= dev
;
736 reset_scb
->sg_count
= 0;
737 ahd_set_residual(reset_scb
, 0);
738 ahd_set_sense_residual(reset_scb
, 0);
739 reset_scb
->platform_data
->xfer_len
= 0;
740 reset_scb
->hscb
->control
= 0;
741 reset_scb
->hscb
->scsiid
= BUILD_SCSIID(ahd
,cmd
);
742 reset_scb
->hscb
->lun
= cmd
->device
->lun
;
743 reset_scb
->hscb
->cdb_len
= 0;
744 reset_scb
->hscb
->task_management
= SIU_TASKMGMT_LUN_RESET
;
745 reset_scb
->flags
|= SCB_DEVICE_RESET
|SCB_RECOVERY_SCB
|SCB_ACTIVE
;
746 if ((tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0) {
747 reset_scb
->flags
|= SCB_PACKETIZED
;
749 reset_scb
->hscb
->control
|= MK_MESSAGE
;
753 dev
->commands_issued
++;
755 ahd_lock(ahd
, &flags
);
757 LIST_INSERT_HEAD(&ahd
->pending_scbs
, reset_scb
, pending_links
);
758 ahd_queue_scb(ahd
, reset_scb
);
760 ahd
->platform_data
->eh_done
= &done
;
761 ahd_unlock(ahd
, &flags
);
763 printf("%s: Device reset code sleeping\n", ahd_name(ahd
));
764 if (!wait_for_completion_timeout(&done
, 5 * HZ
)) {
765 ahd_lock(ahd
, &flags
);
766 ahd
->platform_data
->eh_done
= NULL
;
767 ahd_unlock(ahd
, &flags
);
768 printf("%s: Device reset timer expired (active %d)\n",
769 ahd_name(ahd
), dev
->active
);
772 printf("%s: Device reset returning 0x%x\n", ahd_name(ahd
), retval
);
778 * Reset the SCSI bus.
781 ahd_linux_bus_reset(struct scsi_cmnd
*cmd
)
783 struct ahd_softc
*ahd
;
786 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
788 if ((ahd_debug
& AHD_SHOW_RECOVERY
) != 0)
789 printf("%s: Bus reset called for cmd %p\n",
792 found
= ahd_reset_channel(ahd
, scmd_channel(cmd
) + 'A',
793 /*initiate reset*/TRUE
);
796 printf("%s: SCSI bus reset delivered. "
797 "%d SCBs aborted.\n", ahd_name(ahd
), found
);
802 struct scsi_host_template aic79xx_driver_template
= {
803 .module
= THIS_MODULE
,
805 .proc_name
= "aic79xx",
806 .proc_info
= ahd_linux_proc_info
,
807 .info
= ahd_linux_info
,
808 .queuecommand
= ahd_linux_queue
,
809 .eh_abort_handler
= ahd_linux_abort
,
810 .eh_device_reset_handler
= ahd_linux_dev_reset
,
811 .eh_bus_reset_handler
= ahd_linux_bus_reset
,
812 #if defined(__i386__)
813 .bios_param
= ahd_linux_biosparam
,
815 .can_queue
= AHD_MAX_QUEUE
,
818 .use_clustering
= ENABLE_CLUSTERING
,
819 .slave_alloc
= ahd_linux_slave_alloc
,
820 .slave_configure
= ahd_linux_slave_configure
,
821 .slave_destroy
= ahd_linux_slave_destroy
,
822 .target_alloc
= ahd_linux_target_alloc
,
823 .target_destroy
= ahd_linux_target_destroy
,
826 /******************************** Bus DMA *************************************/
828 ahd_dma_tag_create(struct ahd_softc
*ahd
, bus_dma_tag_t parent
,
829 bus_size_t alignment
, bus_size_t boundary
,
830 dma_addr_t lowaddr
, dma_addr_t highaddr
,
831 bus_dma_filter_t
*filter
, void *filterarg
,
832 bus_size_t maxsize
, int nsegments
,
833 bus_size_t maxsegsz
, int flags
, bus_dma_tag_t
*ret_tag
)
837 dmat
= malloc(sizeof(*dmat
), M_DEVBUF
, M_NOWAIT
);
842 * Linux is very simplistic about DMA memory. For now don't
843 * maintain all specification information. Once Linux supplies
844 * better facilities for doing these operations, or the
845 * needs of this particular driver change, we might need to do
848 dmat
->alignment
= alignment
;
849 dmat
->boundary
= boundary
;
850 dmat
->maxsize
= maxsize
;
856 ahd_dma_tag_destroy(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
)
858 free(dmat
, M_DEVBUF
);
862 ahd_dmamem_alloc(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, void** vaddr
,
863 int flags
, bus_dmamap_t
*mapp
)
865 *vaddr
= pci_alloc_consistent(ahd
->dev_softc
,
866 dmat
->maxsize
, mapp
);
873 ahd_dmamem_free(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
,
874 void* vaddr
, bus_dmamap_t map
)
876 pci_free_consistent(ahd
->dev_softc
, dmat
->maxsize
,
881 ahd_dmamap_load(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
,
882 void *buf
, bus_size_t buflen
, bus_dmamap_callback_t
*cb
,
883 void *cb_arg
, int flags
)
886 * Assume for now that this will only be used during
887 * initialization and not for per-transaction buffer mapping.
889 bus_dma_segment_t stack_sg
;
891 stack_sg
.ds_addr
= map
;
892 stack_sg
.ds_len
= dmat
->maxsize
;
893 cb(cb_arg
, &stack_sg
, /*nseg*/1, /*error*/0);
898 ahd_dmamap_destroy(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
)
903 ahd_dmamap_unload(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
)
909 /********************* Platform Dependent Functions ***************************/
911 ahd_linux_setup_iocell_info(u_long index
, int instance
, int targ
, int32_t value
)
915 && (instance
< NUM_ELEMENTS(aic79xx_iocell_info
))) {
916 uint8_t *iocell_info
;
918 iocell_info
= (uint8_t*)&aic79xx_iocell_info
[instance
];
919 iocell_info
[index
] = value
& 0xFFFF;
921 printf("iocell[%d:%ld] = %d\n", instance
, index
, value
);
926 ahd_linux_setup_tag_info_global(char *p
)
930 tags
= simple_strtoul(p
+ 1, NULL
, 0) & 0xff;
931 printf("Setting Global Tags= %d\n", tags
);
933 for (i
= 0; i
< NUM_ELEMENTS(aic79xx_tag_info
); i
++) {
934 for (j
= 0; j
< AHD_NUM_TARGETS
; j
++) {
935 aic79xx_tag_info
[i
].tag_commands
[j
] = tags
;
941 ahd_linux_setup_tag_info(u_long arg
, int instance
, int targ
, int32_t value
)
944 if ((instance
>= 0) && (targ
>= 0)
945 && (instance
< NUM_ELEMENTS(aic79xx_tag_info
))
946 && (targ
< AHD_NUM_TARGETS
)) {
947 aic79xx_tag_info
[instance
].tag_commands
[targ
] = value
& 0x1FF;
949 printf("tag_info[%d:%d] = %d\n", instance
, targ
, value
);
954 ahd_parse_brace_option(char *opt_name
, char *opt_arg
, char *end
, int depth
,
955 void (*callback
)(u_long
, int, int, int32_t),
964 char tok_list
[] = {'.', ',', '{', '}', '\0'};
966 /* All options use a ':' name/arg separator */
974 * Restore separator that may be in
975 * the middle of our option argument.
977 tok_end
= strchr(opt_arg
, '\0');
983 if (instance
== -1) {
990 printf("Malformed Option %s\n",
1000 else if (instance
!= -1)
1010 else if (instance
>= 0)
1019 for (i
= 0; tok_list
[i
]; i
++) {
1020 tok_end2
= strchr(opt_arg
, tok_list
[i
]);
1021 if ((tok_end2
) && (tok_end2
< tok_end
))
1024 callback(callback_arg
, instance
, targ
,
1025 simple_strtol(opt_arg
, NULL
, 0));
1034 * Handle Linux boot parameters. This routine allows for assigning a value
1035 * to a parameter with a ':' between the parameter and the value.
1036 * ie. aic79xx=stpwlev:1,extended
1039 aic79xx_setup(char *s
)
1049 { "extended", &aic79xx_extended
},
1050 { "no_reset", &aic79xx_no_reset
},
1051 { "verbose", &aic79xx_verbose
},
1052 { "allow_memio", &aic79xx_allow_memio
},
1054 { "debug", &ahd_debug
},
1056 { "reverse_scan", &aic79xx_reverse_scan
},
1057 { "periodic_otag", &aic79xx_periodic_otag
},
1058 { "pci_parity", &aic79xx_pci_parity
},
1059 { "seltime", &aic79xx_seltime
},
1060 { "tag_info", NULL
},
1061 { "global_tag_depth", NULL
},
1062 { "slewrate", NULL
},
1063 { "precomp", NULL
},
1064 { "amplitude", NULL
},
1065 { "slowcrc", &aic79xx_slowcrc
},
1068 end
= strchr(s
, '\0');
1071 * XXX ia64 gcc isn't smart enough to know that NUM_ELEMENTS
1072 * will never be 0 in this case.
1076 while ((p
= strsep(&s
, ",.")) != NULL
) {
1079 for (i
= 0; i
< NUM_ELEMENTS(options
); i
++) {
1081 n
= strlen(options
[i
].name
);
1082 if (strncmp(options
[i
].name
, p
, n
) == 0)
1085 if (i
== NUM_ELEMENTS(options
))
1088 if (strncmp(p
, "global_tag_depth", n
) == 0) {
1089 ahd_linux_setup_tag_info_global(p
+ n
);
1090 } else if (strncmp(p
, "tag_info", n
) == 0) {
1091 s
= ahd_parse_brace_option("tag_info", p
+ n
, end
,
1092 2, ahd_linux_setup_tag_info
, 0);
1093 } else if (strncmp(p
, "slewrate", n
) == 0) {
1094 s
= ahd_parse_brace_option("slewrate",
1095 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1096 AIC79XX_SLEWRATE_INDEX
);
1097 } else if (strncmp(p
, "precomp", n
) == 0) {
1098 s
= ahd_parse_brace_option("precomp",
1099 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1100 AIC79XX_PRECOMP_INDEX
);
1101 } else if (strncmp(p
, "amplitude", n
) == 0) {
1102 s
= ahd_parse_brace_option("amplitude",
1103 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1104 AIC79XX_AMPLITUDE_INDEX
);
1105 } else if (p
[n
] == ':') {
1106 *(options
[i
].flag
) = simple_strtoul(p
+ n
+ 1, NULL
, 0);
1107 } else if (!strncmp(p
, "verbose", n
)) {
1108 *(options
[i
].flag
) = 1;
1110 *(options
[i
].flag
) ^= 0xFFFFFFFF;
1116 __setup("aic79xx=", aic79xx_setup
);
1118 uint32_t aic79xx_verbose
;
1121 ahd_linux_register_host(struct ahd_softc
*ahd
, struct scsi_host_template
*template)
1124 struct Scsi_Host
*host
;
1129 template->name
= ahd
->description
;
1130 host
= scsi_host_alloc(template, sizeof(struct ahd_softc
*));
1134 *((struct ahd_softc
**)host
->hostdata
) = ahd
;
1135 ahd
->platform_data
->host
= host
;
1136 host
->can_queue
= AHD_MAX_QUEUE
;
1137 host
->cmd_per_lun
= 2;
1138 host
->sg_tablesize
= AHD_NSEG
;
1139 host
->this_id
= ahd
->our_id
;
1140 host
->irq
= ahd
->platform_data
->irq
;
1141 host
->max_id
= (ahd
->features
& AHD_WIDE
) ? 16 : 8;
1142 host
->max_lun
= AHD_NUM_LUNS
;
1143 host
->max_channel
= 0;
1144 host
->sg_tablesize
= AHD_NSEG
;
1146 ahd_set_unit(ahd
, ahd_linux_unit
++);
1147 ahd_unlock(ahd
, &s
);
1148 sprintf(buf
, "scsi%d", host
->host_no
);
1149 new_name
= malloc(strlen(buf
) + 1, M_DEVBUF
, M_NOWAIT
);
1150 if (new_name
!= NULL
) {
1151 strcpy(new_name
, buf
);
1152 ahd_set_name(ahd
, new_name
);
1154 host
->unique_id
= ahd
->unit
;
1155 ahd_linux_initialize_scsi_bus(ahd
);
1156 ahd_intr_enable(ahd
, TRUE
);
1158 host
->transportt
= ahd_linux_transport_template
;
1160 retval
= scsi_add_host(host
, &ahd
->dev_softc
->dev
);
1162 printk(KERN_WARNING
"aic79xx: scsi_add_host failed\n");
1163 scsi_host_put(host
);
1167 scsi_scan_host(host
);
1172 ahd_linux_get_memsize(void)
1177 return ((uint64_t)si
.totalram
<< PAGE_SHIFT
);
1181 * Place the SCSI bus into a known state by either resetting it,
1182 * or forcing transfer negotiations on the next command to any
1186 ahd_linux_initialize_scsi_bus(struct ahd_softc
*ahd
)
1195 if (aic79xx_no_reset
!= 0)
1196 ahd
->flags
&= ~AHD_RESET_BUS_A
;
1198 if ((ahd
->flags
& AHD_RESET_BUS_A
) != 0)
1199 ahd_reset_channel(ahd
, 'A', /*initiate_reset*/TRUE
);
1201 numtarg
= (ahd
->features
& AHD_WIDE
) ? 16 : 8;
1206 * Force negotiation to async for all targets that
1207 * will not see an initial bus reset.
1209 for (; target_id
< numtarg
; target_id
++) {
1210 struct ahd_devinfo devinfo
;
1211 struct ahd_initiator_tinfo
*tinfo
;
1212 struct ahd_tmode_tstate
*tstate
;
1214 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
1215 target_id
, &tstate
);
1216 ahd_compile_devinfo(&devinfo
, ahd
->our_id
, target_id
,
1217 CAM_LUN_WILDCARD
, 'A', ROLE_INITIATOR
);
1218 ahd_update_neg_request(ahd
, &devinfo
, tstate
,
1219 tinfo
, AHD_NEG_ALWAYS
);
1221 ahd_unlock(ahd
, &s
);
1222 /* Give the bus some time to recover */
1223 if ((ahd
->flags
& AHD_RESET_BUS_A
) != 0) {
1224 ahd_freeze_simq(ahd
);
1225 msleep(AIC79XX_RESET_DELAY
);
1226 ahd_release_simq(ahd
);
1231 ahd_platform_alloc(struct ahd_softc
*ahd
, void *platform_arg
)
1233 ahd
->platform_data
=
1234 malloc(sizeof(struct ahd_platform_data
), M_DEVBUF
, M_NOWAIT
);
1235 if (ahd
->platform_data
== NULL
)
1237 memset(ahd
->platform_data
, 0, sizeof(struct ahd_platform_data
));
1238 ahd
->platform_data
->irq
= AHD_LINUX_NOIRQ
;
1240 ahd
->seltime
= (aic79xx_seltime
& 0x3) << 4;
1245 ahd_platform_free(struct ahd_softc
*ahd
)
1247 struct scsi_target
*starget
;
1250 if (ahd
->platform_data
!= NULL
) {
1251 /* destroy all of the device and target objects */
1252 for (i
= 0; i
< AHD_NUM_TARGETS
; i
++) {
1253 starget
= ahd
->platform_data
->starget
[i
];
1254 if (starget
!= NULL
) {
1255 for (j
= 0; j
< AHD_NUM_LUNS
; j
++) {
1256 struct ahd_linux_target
*targ
=
1257 scsi_transport_target_data(starget
);
1258 if (targ
->sdev
[j
] == NULL
)
1260 targ
->sdev
[j
] = NULL
;
1262 ahd
->platform_data
->starget
[i
] = NULL
;
1266 if (ahd
->platform_data
->irq
!= AHD_LINUX_NOIRQ
)
1267 free_irq(ahd
->platform_data
->irq
, ahd
);
1268 if (ahd
->tags
[0] == BUS_SPACE_PIO
1269 && ahd
->bshs
[0].ioport
!= 0)
1270 release_region(ahd
->bshs
[0].ioport
, 256);
1271 if (ahd
->tags
[1] == BUS_SPACE_PIO
1272 && ahd
->bshs
[1].ioport
!= 0)
1273 release_region(ahd
->bshs
[1].ioport
, 256);
1274 if (ahd
->tags
[0] == BUS_SPACE_MEMIO
1275 && ahd
->bshs
[0].maddr
!= NULL
) {
1276 iounmap(ahd
->bshs
[0].maddr
);
1277 release_mem_region(ahd
->platform_data
->mem_busaddr
,
1280 if (ahd
->platform_data
->host
)
1281 scsi_host_put(ahd
->platform_data
->host
);
1283 free(ahd
->platform_data
, M_DEVBUF
);
1288 ahd_platform_init(struct ahd_softc
*ahd
)
1291 * Lookup and commit any modified IO Cell options.
1293 if (ahd
->unit
< NUM_ELEMENTS(aic79xx_iocell_info
)) {
1294 struct ahd_linux_iocell_opts
*iocell_opts
;
1296 iocell_opts
= &aic79xx_iocell_info
[ahd
->unit
];
1297 if (iocell_opts
->precomp
!= AIC79XX_DEFAULT_PRECOMP
)
1298 AHD_SET_PRECOMP(ahd
, iocell_opts
->precomp
);
1299 if (iocell_opts
->slewrate
!= AIC79XX_DEFAULT_SLEWRATE
)
1300 AHD_SET_SLEWRATE(ahd
, iocell_opts
->slewrate
);
1301 if (iocell_opts
->amplitude
!= AIC79XX_DEFAULT_AMPLITUDE
)
1302 AHD_SET_AMPLITUDE(ahd
, iocell_opts
->amplitude
);
1308 ahd_platform_freeze_devq(struct ahd_softc
*ahd
, struct scb
*scb
)
1310 ahd_platform_abort_scbs(ahd
, SCB_GET_TARGET(ahd
, scb
),
1311 SCB_GET_CHANNEL(ahd
, scb
),
1312 SCB_GET_LUN(scb
), SCB_LIST_NULL
,
1313 ROLE_UNKNOWN
, CAM_REQUEUE_REQ
);
1317 ahd_platform_set_tags(struct ahd_softc
*ahd
, struct ahd_devinfo
*devinfo
,
1320 struct scsi_target
*starget
;
1321 struct ahd_linux_target
*targ
;
1322 struct ahd_linux_device
*dev
;
1323 struct scsi_device
*sdev
;
1327 starget
= ahd
->platform_data
->starget
[devinfo
->target
];
1328 targ
= scsi_transport_target_data(starget
);
1329 BUG_ON(targ
== NULL
);
1330 sdev
= targ
->sdev
[devinfo
->lun
];
1334 dev
= scsi_transport_device_data(sdev
);
1338 was_queuing
= dev
->flags
& (AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
);
1341 case AHD_QUEUE_NONE
:
1344 case AHD_QUEUE_BASIC
:
1345 now_queuing
= AHD_DEV_Q_BASIC
;
1347 case AHD_QUEUE_TAGGED
:
1348 now_queuing
= AHD_DEV_Q_TAGGED
;
1351 if ((dev
->flags
& AHD_DEV_FREEZE_TIL_EMPTY
) == 0
1352 && (was_queuing
!= now_queuing
)
1353 && (dev
->active
!= 0)) {
1354 dev
->flags
|= AHD_DEV_FREEZE_TIL_EMPTY
;
1358 dev
->flags
&= ~(AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
|AHD_DEV_PERIODIC_OTAG
);
1362 usertags
= ahd_linux_user_tagdepth(ahd
, devinfo
);
1365 * Start out agressively and allow our
1366 * dynamic queue depth algorithm to take
1369 dev
->maxtags
= usertags
;
1370 dev
->openings
= dev
->maxtags
- dev
->active
;
1372 if (dev
->maxtags
== 0) {
1374 * Queueing is disabled by the user.
1377 } else if (alg
== AHD_QUEUE_TAGGED
) {
1378 dev
->flags
|= AHD_DEV_Q_TAGGED
;
1379 if (aic79xx_periodic_otag
!= 0)
1380 dev
->flags
|= AHD_DEV_PERIODIC_OTAG
;
1382 dev
->flags
|= AHD_DEV_Q_BASIC
;
1384 /* We can only have one opening. */
1386 dev
->openings
= 1 - dev
->active
;
1389 switch ((dev
->flags
& (AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
))) {
1390 case AHD_DEV_Q_BASIC
:
1391 scsi_set_tag_type(sdev
, MSG_SIMPLE_TASK
);
1392 scsi_activate_tcq(sdev
, dev
->openings
+ dev
->active
);
1394 case AHD_DEV_Q_TAGGED
:
1395 scsi_set_tag_type(sdev
, MSG_ORDERED_TASK
);
1396 scsi_activate_tcq(sdev
, dev
->openings
+ dev
->active
);
1400 * We allow the OS to queue 2 untagged transactions to
1401 * us at any time even though we can only execute them
1402 * serially on the controller/device. This should
1403 * remove some latency.
1405 scsi_deactivate_tcq(sdev
, 1);
1411 ahd_platform_abort_scbs(struct ahd_softc
*ahd
, int target
, char channel
,
1412 int lun
, u_int tag
, role_t role
, uint32_t status
)
1418 ahd_linux_user_tagdepth(struct ahd_softc
*ahd
, struct ahd_devinfo
*devinfo
)
1420 static int warned_user
;
1424 if ((ahd
->user_discenable
& devinfo
->target_mask
) != 0) {
1425 if (ahd
->unit
>= NUM_ELEMENTS(aic79xx_tag_info
)) {
1427 if (warned_user
== 0) {
1429 "aic79xx: WARNING: Insufficient tag_info instances\n"
1430 "aic79xx: for installed controllers. Using defaults\n"
1431 "aic79xx: Please update the aic79xx_tag_info array in\n"
1432 "aic79xx: the aic79xx_osm.c source file.\n");
1435 tags
= AHD_MAX_QUEUE
;
1437 adapter_tag_info_t
*tag_info
;
1439 tag_info
= &aic79xx_tag_info
[ahd
->unit
];
1440 tags
= tag_info
->tag_commands
[devinfo
->target_offset
];
1441 if (tags
> AHD_MAX_QUEUE
)
1442 tags
= AHD_MAX_QUEUE
;
1449 * Determines the queue depth for a given device.
1452 ahd_linux_device_queue_depth(struct scsi_device
*sdev
)
1454 struct ahd_devinfo devinfo
;
1456 struct ahd_softc
*ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
1458 ahd_compile_devinfo(&devinfo
,
1460 sdev
->sdev_target
->id
, sdev
->lun
,
1461 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1463 tags
= ahd_linux_user_tagdepth(ahd
, &devinfo
);
1464 if (tags
!= 0 && sdev
->tagged_supported
!= 0) {
1466 ahd_set_tags(ahd
, &devinfo
, AHD_QUEUE_TAGGED
);
1467 ahd_print_devinfo(ahd
, &devinfo
);
1468 printf("Tagged Queuing enabled. Depth %d\n", tags
);
1470 ahd_set_tags(ahd
, &devinfo
, AHD_QUEUE_NONE
);
1475 ahd_linux_run_command(struct ahd_softc
*ahd
, struct ahd_linux_device
*dev
,
1476 struct scsi_cmnd
*cmd
)
1479 struct hardware_scb
*hscb
;
1480 struct ahd_initiator_tinfo
*tinfo
;
1481 struct ahd_tmode_tstate
*tstate
;
1484 unsigned long flags
;
1486 ahd_lock(ahd
, &flags
);
1489 * Get an scb to use.
1491 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
1492 cmd
->device
->id
, &tstate
);
1493 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) == 0
1494 || (tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0) {
1495 col_idx
= AHD_NEVER_COL_IDX
;
1497 col_idx
= AHD_BUILD_COL_IDX(cmd
->device
->id
,
1500 if ((scb
= ahd_get_scb(ahd
, col_idx
)) == NULL
) {
1501 ahd
->flags
|= AHD_RESOURCE_SHORTAGE
;
1502 ahd_unlock(ahd
, &flags
);
1503 return SCSI_MLQUEUE_HOST_BUSY
;
1507 scb
->platform_data
->dev
= dev
;
1509 cmd
->host_scribble
= (char *)scb
;
1512 * Fill out basics of the HSCB.
1515 hscb
->scsiid
= BUILD_SCSIID(ahd
, cmd
);
1516 hscb
->lun
= cmd
->device
->lun
;
1517 scb
->hscb
->task_management
= 0;
1518 mask
= SCB_GET_TARGET_MASK(ahd
, scb
);
1520 if ((ahd
->user_discenable
& mask
) != 0)
1521 hscb
->control
|= DISCENB
;
1523 if ((tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0)
1524 scb
->flags
|= SCB_PACKETIZED
;
1526 if ((tstate
->auto_negotiate
& mask
) != 0) {
1527 scb
->flags
|= SCB_AUTO_NEGOTIATE
;
1528 scb
->hscb
->control
|= MK_MESSAGE
;
1531 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) != 0) {
1533 uint8_t tag_msgs
[2];
1535 msg_bytes
= scsi_populate_tag_msg(cmd
, tag_msgs
);
1536 if (msg_bytes
&& tag_msgs
[0] != MSG_SIMPLE_TASK
) {
1537 hscb
->control
|= tag_msgs
[0];
1538 if (tag_msgs
[0] == MSG_ORDERED_TASK
)
1539 dev
->commands_since_idle_or_otag
= 0;
1541 if (dev
->commands_since_idle_or_otag
== AHD_OTAG_THRESH
1542 && (dev
->flags
& AHD_DEV_Q_TAGGED
) != 0) {
1543 hscb
->control
|= MSG_ORDERED_TASK
;
1544 dev
->commands_since_idle_or_otag
= 0;
1546 hscb
->control
|= MSG_SIMPLE_TASK
;
1550 hscb
->cdb_len
= cmd
->cmd_len
;
1551 memcpy(hscb
->shared_data
.idata
.cdb
, cmd
->cmnd
, hscb
->cdb_len
);
1553 scb
->platform_data
->xfer_len
= 0;
1554 ahd_set_residual(scb
, 0);
1555 ahd_set_sense_residual(scb
, 0);
1557 if (cmd
->use_sg
!= 0) {
1559 struct scatterlist
*cur_seg
;
1563 cur_seg
= (struct scatterlist
*)cmd
->request_buffer
;
1564 dir
= cmd
->sc_data_direction
;
1565 nseg
= pci_map_sg(ahd
->dev_softc
, cur_seg
,
1567 scb
->platform_data
->xfer_len
= 0;
1568 for (sg
= scb
->sg_list
; nseg
> 0; nseg
--, cur_seg
++) {
1572 addr
= sg_dma_address(cur_seg
);
1573 len
= sg_dma_len(cur_seg
);
1574 scb
->platform_data
->xfer_len
+= len
;
1575 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
, len
,
1578 } else if (cmd
->request_bufflen
!= 0) {
1584 dir
= cmd
->sc_data_direction
;
1585 addr
= pci_map_single(ahd
->dev_softc
,
1586 cmd
->request_buffer
,
1587 cmd
->request_bufflen
, dir
);
1588 scb
->platform_data
->xfer_len
= cmd
->request_bufflen
;
1589 scb
->platform_data
->buf_busaddr
= addr
;
1590 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
,
1591 cmd
->request_bufflen
, /*last*/TRUE
);
1594 LIST_INSERT_HEAD(&ahd
->pending_scbs
, scb
, pending_links
);
1597 dev
->commands_issued
++;
1599 if ((dev
->flags
& AHD_DEV_PERIODIC_OTAG
) != 0)
1600 dev
->commands_since_idle_or_otag
++;
1601 scb
->flags
|= SCB_ACTIVE
;
1602 ahd_queue_scb(ahd
, scb
);
1604 ahd_unlock(ahd
, &flags
);
1610 * SCSI controller interrupt handler.
1613 ahd_linux_isr(int irq
, void *dev_id
, struct pt_regs
* regs
)
1615 struct ahd_softc
*ahd
;
1619 ahd
= (struct ahd_softc
*) dev_id
;
1620 ahd_lock(ahd
, &flags
);
1621 ours
= ahd_intr(ahd
);
1622 ahd_unlock(ahd
, &flags
);
1623 return IRQ_RETVAL(ours
);
1627 ahd_send_async(struct ahd_softc
*ahd
, char channel
,
1628 u_int target
, u_int lun
, ac_code code
, void *arg
)
1631 case AC_TRANSFER_NEG
:
1634 struct scsi_target
*starget
;
1635 struct info_str info
;
1636 struct ahd_initiator_tinfo
*tinfo
;
1637 struct ahd_tmode_tstate
*tstate
;
1638 unsigned int target_ppr_options
;
1640 BUG_ON(target
== CAM_TARGET_WILDCARD
);
1643 info
.length
= sizeof(buf
);
1646 tinfo
= ahd_fetch_transinfo(ahd
, channel
, ahd
->our_id
,
1650 * Don't bother reporting results while
1651 * negotiations are still pending.
1653 if (tinfo
->curr
.period
!= tinfo
->goal
.period
1654 || tinfo
->curr
.width
!= tinfo
->goal
.width
1655 || tinfo
->curr
.offset
!= tinfo
->goal
.offset
1656 || tinfo
->curr
.ppr_options
!= tinfo
->goal
.ppr_options
)
1657 if (bootverbose
== 0)
1661 * Don't bother reporting results that
1662 * are identical to those last reported.
1664 starget
= ahd
->platform_data
->starget
[target
];
1665 if (starget
== NULL
)
1668 target_ppr_options
=
1669 (spi_dt(starget
) ? MSG_EXT_PPR_DT_REQ
: 0)
1670 + (spi_qas(starget
) ? MSG_EXT_PPR_QAS_REQ
: 0)
1671 + (spi_iu(starget
) ? MSG_EXT_PPR_IU_REQ
: 0)
1672 + (spi_rd_strm(starget
) ? MSG_EXT_PPR_RD_STRM
: 0)
1673 + (spi_pcomp_en(starget
) ? MSG_EXT_PPR_PCOMP_EN
: 0)
1674 + (spi_rti(starget
) ? MSG_EXT_PPR_RTI
: 0)
1675 + (spi_wr_flow(starget
) ? MSG_EXT_PPR_WR_FLOW
: 0)
1676 + (spi_hold_mcs(starget
) ? MSG_EXT_PPR_HOLD_MCS
: 0);
1678 if (tinfo
->curr
.period
== spi_period(starget
)
1679 && tinfo
->curr
.width
== spi_width(starget
)
1680 && tinfo
->curr
.offset
== spi_offset(starget
)
1681 && tinfo
->curr
.ppr_options
== target_ppr_options
)
1682 if (bootverbose
== 0)
1685 spi_period(starget
) = tinfo
->curr
.period
;
1686 spi_width(starget
) = tinfo
->curr
.width
;
1687 spi_offset(starget
) = tinfo
->curr
.offset
;
1688 spi_dt(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_DT_REQ
? 1 : 0;
1689 spi_qas(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_QAS_REQ
? 1 : 0;
1690 spi_iu(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
? 1 : 0;
1691 spi_rd_strm(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_RD_STRM
? 1 : 0;
1692 spi_pcomp_en(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_PCOMP_EN
? 1 : 0;
1693 spi_rti(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_RTI
? 1 : 0;
1694 spi_wr_flow(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_WR_FLOW
? 1 : 0;
1695 spi_hold_mcs(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_HOLD_MCS
? 1 : 0;
1696 spi_display_xfer_agreement(starget
);
1701 WARN_ON(lun
!= CAM_LUN_WILDCARD
);
1702 scsi_report_device_reset(ahd
->platform_data
->host
,
1703 channel
- 'A', target
);
1707 if (ahd
->platform_data
->host
!= NULL
) {
1708 scsi_report_bus_reset(ahd
->platform_data
->host
,
1713 panic("ahd_send_async: Unexpected async event");
1718 * Calls the higher level scsi done function and frees the scb.
1721 ahd_done(struct ahd_softc
*ahd
, struct scb
*scb
)
1723 struct scsi_cmnd
*cmd
;
1724 struct ahd_linux_device
*dev
;
1726 if ((scb
->flags
& SCB_ACTIVE
) == 0) {
1727 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb
));
1728 ahd_dump_card_state(ahd
);
1729 panic("Stopping for safety");
1731 LIST_REMOVE(scb
, pending_links
);
1733 dev
= scb
->platform_data
->dev
;
1736 if ((cmd
->result
& (CAM_DEV_QFRZN
<< 16)) != 0) {
1737 cmd
->result
&= ~(CAM_DEV_QFRZN
<< 16);
1740 ahd_linux_unmap_scb(ahd
, scb
);
1743 * Guard against stale sense data.
1744 * The Linux mid-layer assumes that sense
1745 * was retrieved anytime the first byte of
1746 * the sense buffer looks "sane".
1748 cmd
->sense_buffer
[0] = 0;
1749 if (ahd_get_transaction_status(scb
) == CAM_REQ_INPROG
) {
1750 uint32_t amount_xferred
;
1753 ahd_get_transfer_length(scb
) - ahd_get_residual(scb
);
1754 if ((scb
->flags
& SCB_TRANSMISSION_ERROR
) != 0) {
1756 if ((ahd_debug
& AHD_SHOW_MISC
) != 0) {
1757 ahd_print_path(ahd
, scb
);
1758 printf("Set CAM_UNCOR_PARITY\n");
1761 ahd_set_transaction_status(scb
, CAM_UNCOR_PARITY
);
1762 #ifdef AHD_REPORT_UNDERFLOWS
1764 * This code is disabled by default as some
1765 * clients of the SCSI system do not properly
1766 * initialize the underflow parameter. This
1767 * results in spurious termination of commands
1768 * that complete as expected (e.g. underflow is
1769 * allowed as command can return variable amounts
1772 } else if (amount_xferred
< scb
->io_ctx
->underflow
) {
1775 ahd_print_path(ahd
, scb
);
1777 for (i
= 0; i
< scb
->io_ctx
->cmd_len
; i
++)
1778 printf(" 0x%x", scb
->io_ctx
->cmnd
[i
]);
1780 ahd_print_path(ahd
, scb
);
1781 printf("Saw underflow (%ld of %ld bytes). "
1782 "Treated as error\n",
1783 ahd_get_residual(scb
),
1784 ahd_get_transfer_length(scb
));
1785 ahd_set_transaction_status(scb
, CAM_DATA_RUN_ERR
);
1788 ahd_set_transaction_status(scb
, CAM_REQ_CMP
);
1790 } else if (ahd_get_transaction_status(scb
) == CAM_SCSI_STATUS_ERROR
) {
1791 ahd_linux_handle_scsi_status(ahd
, cmd
->device
, scb
);
1794 if (dev
->openings
== 1
1795 && ahd_get_transaction_status(scb
) == CAM_REQ_CMP
1796 && ahd_get_scsi_status(scb
) != SCSI_STATUS_QUEUE_FULL
)
1797 dev
->tag_success_count
++;
1799 * Some devices deal with temporary internal resource
1800 * shortages by returning queue full. When the queue
1801 * full occurrs, we throttle back. Slowly try to get
1802 * back to our previous queue depth.
1804 if ((dev
->openings
+ dev
->active
) < dev
->maxtags
1805 && dev
->tag_success_count
> AHD_TAG_SUCCESS_INTERVAL
) {
1806 dev
->tag_success_count
= 0;
1810 if (dev
->active
== 0)
1811 dev
->commands_since_idle_or_otag
= 0;
1813 if ((scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
1814 printf("Recovery SCB completes\n");
1815 if (ahd_get_transaction_status(scb
) == CAM_BDR_SENT
1816 || ahd_get_transaction_status(scb
) == CAM_REQ_ABORTED
)
1817 ahd_set_transaction_status(scb
, CAM_CMD_TIMEOUT
);
1819 if (ahd
->platform_data
->eh_done
)
1820 complete(ahd
->platform_data
->eh_done
);
1823 ahd_free_scb(ahd
, scb
);
1824 ahd_linux_queue_cmd_complete(ahd
, cmd
);
1828 ahd_linux_handle_scsi_status(struct ahd_softc
*ahd
,
1829 struct scsi_device
*sdev
, struct scb
*scb
)
1831 struct ahd_devinfo devinfo
;
1832 struct ahd_linux_device
*dev
= scsi_transport_device_data(sdev
);
1834 ahd_compile_devinfo(&devinfo
,
1836 sdev
->sdev_target
->id
, sdev
->lun
,
1837 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1841 * We don't currently trust the mid-layer to
1842 * properly deal with queue full or busy. So,
1843 * when one occurs, we tell the mid-layer to
1844 * unconditionally requeue the command to us
1845 * so that we can retry it ourselves. We also
1846 * implement our own throttling mechanism so
1847 * we don't clobber the device with too many
1850 switch (ahd_get_scsi_status(scb
)) {
1853 case SCSI_STATUS_CHECK_COND
:
1854 case SCSI_STATUS_CMD_TERMINATED
:
1856 struct scsi_cmnd
*cmd
;
1859 * Copy sense information to the OS's cmd
1860 * structure if it is available.
1863 if ((scb
->flags
& (SCB_SENSE
|SCB_PKT_SENSE
)) != 0) {
1864 struct scsi_status_iu_header
*siu
;
1868 if (scb
->flags
& SCB_SENSE
) {
1869 sense_size
= MIN(sizeof(struct scsi_sense_data
)
1870 - ahd_get_sense_residual(scb
),
1871 sizeof(cmd
->sense_buffer
));
1875 * Copy only the sense data into the provided
1878 siu
= (struct scsi_status_iu_header
*)
1880 sense_size
= MIN(scsi_4btoul(siu
->sense_length
),
1881 sizeof(cmd
->sense_buffer
));
1882 sense_offset
= SIU_SENSE_OFFSET(siu
);
1885 memset(cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
1886 memcpy(cmd
->sense_buffer
,
1887 ahd_get_sense_buf(ahd
, scb
)
1888 + sense_offset
, sense_size
);
1889 cmd
->result
|= (DRIVER_SENSE
<< 24);
1892 if (ahd_debug
& AHD_SHOW_SENSE
) {
1895 printf("Copied %d bytes of sense data at %d:",
1896 sense_size
, sense_offset
);
1897 for (i
= 0; i
< sense_size
; i
++) {
1900 printf("0x%x ", cmd
->sense_buffer
[i
]);
1908 case SCSI_STATUS_QUEUE_FULL
:
1910 * By the time the core driver has returned this
1911 * command, all other commands that were queued
1912 * to us but not the device have been returned.
1913 * This ensures that dev->active is equal to
1914 * the number of commands actually queued to
1917 dev
->tag_success_count
= 0;
1918 if (dev
->active
!= 0) {
1920 * Drop our opening count to the number
1921 * of commands currently outstanding.
1925 if ((ahd_debug
& AHD_SHOW_QFULL
) != 0) {
1926 ahd_print_path(ahd
, scb
);
1927 printf("Dropping tag count to %d\n",
1931 if (dev
->active
== dev
->tags_on_last_queuefull
) {
1933 dev
->last_queuefull_same_count
++;
1935 * If we repeatedly see a queue full
1936 * at the same queue depth, this
1937 * device has a fixed number of tag
1938 * slots. Lock in this tag depth
1939 * so we stop seeing queue fulls from
1942 if (dev
->last_queuefull_same_count
1943 == AHD_LOCK_TAGS_COUNT
) {
1944 dev
->maxtags
= dev
->active
;
1945 ahd_print_path(ahd
, scb
);
1946 printf("Locking max tag count at %d\n",
1950 dev
->tags_on_last_queuefull
= dev
->active
;
1951 dev
->last_queuefull_same_count
= 0;
1953 ahd_set_transaction_status(scb
, CAM_REQUEUE_REQ
);
1954 ahd_set_scsi_status(scb
, SCSI_STATUS_OK
);
1955 ahd_platform_set_tags(ahd
, &devinfo
,
1956 (dev
->flags
& AHD_DEV_Q_BASIC
)
1957 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1961 * Drop down to a single opening, and treat this
1962 * as if the target returned BUSY SCSI status.
1965 ahd_platform_set_tags(ahd
, &devinfo
,
1966 (dev
->flags
& AHD_DEV_Q_BASIC
)
1967 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1968 ahd_set_scsi_status(scb
, SCSI_STATUS_BUSY
);
1973 ahd_linux_queue_cmd_complete(struct ahd_softc
*ahd
, struct scsi_cmnd
*cmd
)
1976 int new_status
= DID_OK
;
1977 int do_fallback
= 0;
1981 * Map CAM error codes into Linux Error codes. We
1982 * avoid the conversion so that the DV code has the
1983 * full error information available when making
1984 * state change decisions.
1987 status
= ahd_cmd_get_transaction_status(cmd
);
1989 case CAM_REQ_INPROG
:
1991 new_status
= DID_OK
;
1993 case CAM_AUTOSENSE_FAIL
:
1994 new_status
= DID_ERROR
;
1996 case CAM_SCSI_STATUS_ERROR
:
1997 scsi_status
= ahd_cmd_get_scsi_status(cmd
);
1999 switch(scsi_status
) {
2000 case SCSI_STATUS_CMD_TERMINATED
:
2001 case SCSI_STATUS_CHECK_COND
:
2002 if ((cmd
->result
>> 24) != DRIVER_SENSE
) {
2005 struct scsi_sense_data
*sense
;
2007 sense
= (struct scsi_sense_data
*)
2009 if (sense
->extra_len
>= 5 &&
2010 (sense
->add_sense_code
== 0x47
2011 || sense
->add_sense_code
== 0x48))
2019 case CAM_REQ_ABORTED
:
2020 new_status
= DID_ABORT
;
2023 new_status
= DID_BUS_BUSY
;
2025 case CAM_REQ_INVALID
:
2026 case CAM_PATH_INVALID
:
2027 new_status
= DID_BAD_TARGET
;
2029 case CAM_SEL_TIMEOUT
:
2030 new_status
= DID_NO_CONNECT
;
2032 case CAM_SCSI_BUS_RESET
:
2034 new_status
= DID_RESET
;
2036 case CAM_UNCOR_PARITY
:
2037 new_status
= DID_PARITY
;
2040 case CAM_CMD_TIMEOUT
:
2041 new_status
= DID_TIME_OUT
;
2044 case CAM_REQ_CMP_ERR
:
2045 case CAM_UNEXP_BUSFREE
:
2046 case CAM_DATA_RUN_ERR
:
2047 new_status
= DID_ERROR
;
2052 case CAM_SEQUENCE_FAIL
:
2053 case CAM_CCB_LEN_ERR
:
2054 case CAM_PROVIDE_FAIL
:
2055 case CAM_REQ_TERMIO
:
2056 case CAM_UNREC_HBA_ERROR
:
2057 case CAM_REQ_TOO_BIG
:
2058 new_status
= DID_ERROR
;
2060 case CAM_REQUEUE_REQ
:
2061 new_status
= DID_REQUEUE
;
2064 /* We should never get here */
2065 new_status
= DID_ERROR
;
2070 printf("%s: device overrun (status %x) on %d:%d:%d\n",
2071 ahd_name(ahd
), status
, cmd
->device
->channel
,
2072 cmd
->device
->id
, cmd
->device
->lun
);
2075 ahd_cmd_set_transaction_status(cmd
, new_status
);
2077 cmd
->scsi_done(cmd
);
2081 ahd_freeze_simq(struct ahd_softc
*ahd
)
2083 scsi_block_requests(ahd
->platform_data
->host
);
2087 ahd_release_simq(struct ahd_softc
*ahd
)
2089 scsi_unblock_requests(ahd
->platform_data
->host
);
2093 ahd_linux_queue_abort_cmd(struct scsi_cmnd
*cmd
)
2095 struct ahd_softc
*ahd
;
2096 struct ahd_linux_device
*dev
;
2097 struct scb
*pending_scb
;
2099 u_int active_scbptr
;
2108 ahd_mode_state saved_modes
;
2109 unsigned long flags
;
2114 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
2116 scmd_printk(KERN_INFO
, cmd
,
2117 "Attempting to queue an ABORT message:");
2120 for (cdb_byte
= 0; cdb_byte
< cmd
->cmd_len
; cdb_byte
++)
2121 printf(" 0x%x", cmd
->cmnd
[cdb_byte
]);
2124 ahd_lock(ahd
, &flags
);
2127 * First determine if we currently own this command.
2128 * Start by searching the device queue. If not found
2129 * there, check the pending_scb list. If not found
2130 * at all, and the system wanted us to just abort the
2131 * command, return success.
2133 dev
= scsi_transport_device_data(cmd
->device
);
2137 * No target device for this command exists,
2138 * so we must not still own the command.
2140 scmd_printk(KERN_INFO
, cmd
, "Is not an active device\n");
2146 * See if we can find a matching cmd in the pending list.
2148 LIST_FOREACH(pending_scb
, &ahd
->pending_scbs
, pending_links
) {
2149 if (pending_scb
->io_ctx
== cmd
)
2153 if (pending_scb
== NULL
) {
2154 scmd_printk(KERN_INFO
, cmd
, "Command not found\n");
2158 if ((pending_scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
2160 * We can't queue two recovery actions using the same SCB
2167 * Ensure that the card doesn't do anything
2168 * behind our back. Also make sure that we
2169 * didn't "just" miss an interrupt that would
2172 was_paused
= ahd_is_paused(ahd
);
2173 ahd_pause_and_flushwork(ahd
);
2176 if ((pending_scb
->flags
& SCB_ACTIVE
) == 0) {
2177 scmd_printk(KERN_INFO
, cmd
, "Command already completed\n");
2181 printf("%s: At time of recovery, card was %spaused\n",
2182 ahd_name(ahd
), was_paused
? "" : "not ");
2183 ahd_dump_card_state(ahd
);
2185 disconnected
= TRUE
;
2186 if (ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2187 cmd
->device
->channel
+ 'A',
2189 pending_scb
->hscb
->tag
,
2190 ROLE_INITIATOR
, CAM_REQ_ABORTED
,
2191 SEARCH_COMPLETE
) > 0) {
2192 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
2193 ahd_name(ahd
), cmd
->device
->channel
,
2194 cmd
->device
->id
, cmd
->device
->lun
);
2199 saved_modes
= ahd_save_modes(ahd
);
2200 ahd_set_modes(ahd
, AHD_MODE_SCSI
, AHD_MODE_SCSI
);
2201 last_phase
= ahd_inb(ahd
, LASTPHASE
);
2202 saved_scbptr
= ahd_get_scbptr(ahd
);
2203 active_scbptr
= saved_scbptr
;
2204 if (disconnected
&& (ahd_inb(ahd
, SEQ_FLAGS
) & NOT_IDENTIFIED
) == 0) {
2205 struct scb
*bus_scb
;
2207 bus_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2208 if (bus_scb
== pending_scb
)
2209 disconnected
= FALSE
;
2213 * At this point, pending_scb is the scb associated with the
2214 * passed in command. That command is currently active on the
2215 * bus or is in the disconnected state.
2217 saved_scsiid
= ahd_inb(ahd
, SAVED_SCSIID
);
2218 if (last_phase
!= P_BUSFREE
2219 && SCB_GET_TAG(pending_scb
) == active_scbptr
) {
2222 * We're active on the bus, so assert ATN
2223 * and hope that the target responds.
2225 pending_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2226 pending_scb
->flags
|= SCB_RECOVERY_SCB
|SCB_ABORT
;
2227 ahd_outb(ahd
, MSG_OUT
, HOST_MSG
);
2228 ahd_outb(ahd
, SCSISIGO
, last_phase
|ATNO
);
2229 scmd_printk(KERN_INFO
, cmd
, "Device is active, asserting ATN\n");
2231 } else if (disconnected
) {
2234 * Actually re-queue this SCB in an attempt
2235 * to select the device before it reconnects.
2237 pending_scb
->flags
|= SCB_RECOVERY_SCB
|SCB_ABORT
;
2238 ahd_set_scbptr(ahd
, SCB_GET_TAG(pending_scb
));
2239 pending_scb
->hscb
->cdb_len
= 0;
2240 pending_scb
->hscb
->task_attribute
= 0;
2241 pending_scb
->hscb
->task_management
= SIU_TASKMGMT_ABORT_TASK
;
2243 if ((pending_scb
->flags
& SCB_PACKETIZED
) != 0) {
2245 * Mark the SCB has having an outstanding
2246 * task management function. Should the command
2247 * complete normally before the task management
2248 * function can be sent, the host will be notified
2249 * to abort our requeued SCB.
2251 ahd_outb(ahd
, SCB_TASK_MANAGEMENT
,
2252 pending_scb
->hscb
->task_management
);
2255 * If non-packetized, set the MK_MESSAGE control
2256 * bit indicating that we desire to send a message.
2257 * We also set the disconnected flag since there is
2258 * no guarantee that our SCB control byte matches
2259 * the version on the card. We don't want the
2260 * sequencer to abort the command thinking an
2261 * unsolicited reselection occurred.
2263 pending_scb
->hscb
->control
|= MK_MESSAGE
|DISCONNECTED
;
2266 * The sequencer will never re-reference the
2267 * in-core SCB. To make sure we are notified
2268 * during reslection, set the MK_MESSAGE flag in
2269 * the card's copy of the SCB.
2271 ahd_outb(ahd
, SCB_CONTROL
,
2272 ahd_inb(ahd
, SCB_CONTROL
)|MK_MESSAGE
);
2276 * Clear out any entries in the QINFIFO first
2277 * so we are the next SCB for this target
2280 ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2281 cmd
->device
->channel
+ 'A', cmd
->device
->lun
,
2282 SCB_LIST_NULL
, ROLE_INITIATOR
,
2283 CAM_REQUEUE_REQ
, SEARCH_COMPLETE
);
2284 ahd_qinfifo_requeue_tail(ahd
, pending_scb
);
2285 ahd_set_scbptr(ahd
, saved_scbptr
);
2286 ahd_print_path(ahd
, pending_scb
);
2287 printf("Device is disconnected, re-queuing SCB\n");
2290 scmd_printk(KERN_INFO
, cmd
, "Unable to deliver message\n");
2297 * Our assumption is that if we don't have the command, no
2298 * recovery action was required, so we return success. Again,
2299 * the semantics of the mid-layer recovery engine are not
2300 * well defined, so this may change in time.
2307 DECLARE_COMPLETION(done
);
2309 ahd
->platform_data
->eh_done
= &done
;
2310 ahd_unlock(ahd
, &flags
);
2312 printf("%s: Recovery code sleeping\n", ahd_name(ahd
));
2313 if (!wait_for_completion_timeout(&done
, 5 * HZ
)) {
2314 ahd_lock(ahd
, &flags
);
2315 ahd
->platform_data
->eh_done
= NULL
;
2316 ahd_unlock(ahd
, &flags
);
2317 printf("%s: Timer Expired (active %d)\n",
2318 ahd_name(ahd
), dev
->active
);
2321 printf("Recovery code awake\n");
2323 ahd_unlock(ahd
, &flags
);
2325 if (retval
!= SUCCESS
)
2326 printf("%s: Command abort returning 0x%x\n",
2327 ahd_name(ahd
), retval
);
2332 static void ahd_linux_set_width(struct scsi_target
*starget
, int width
)
2334 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2335 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2336 struct ahd_devinfo devinfo
;
2337 unsigned long flags
;
2339 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2340 starget
->channel
+ 'A', ROLE_INITIATOR
);
2341 ahd_lock(ahd
, &flags
);
2342 ahd_set_width(ahd
, &devinfo
, width
, AHD_TRANS_GOAL
, FALSE
);
2343 ahd_unlock(ahd
, &flags
);
2346 static void ahd_linux_set_period(struct scsi_target
*starget
, int period
)
2348 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2349 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2350 struct ahd_tmode_tstate
*tstate
;
2351 struct ahd_initiator_tinfo
*tinfo
2352 = ahd_fetch_transinfo(ahd
,
2353 starget
->channel
+ 'A',
2354 shost
->this_id
, starget
->id
, &tstate
);
2355 struct ahd_devinfo devinfo
;
2356 unsigned int ppr_options
= tinfo
->goal
.ppr_options
;
2358 unsigned long flags
;
2359 unsigned long offset
= tinfo
->goal
.offset
;
2362 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2363 printf("%s: set period to %d\n", ahd_name(ahd
), period
);
2366 offset
= MAX_OFFSET
;
2371 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2373 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2376 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2378 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2379 starget
->channel
+ 'A', ROLE_INITIATOR
);
2381 /* all PPR requests apart from QAS require wide transfers */
2382 if (ppr_options
& ~MSG_EXT_PPR_QAS_REQ
) {
2383 if (spi_width(starget
) == 0)
2384 ppr_options
&= MSG_EXT_PPR_QAS_REQ
;
2387 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2388 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2390 ahd_lock(ahd
, &flags
);
2391 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
,
2392 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2393 ahd_unlock(ahd
, &flags
);
2396 static void ahd_linux_set_offset(struct scsi_target
*starget
, int offset
)
2398 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2399 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2400 struct ahd_tmode_tstate
*tstate
;
2401 struct ahd_initiator_tinfo
*tinfo
2402 = ahd_fetch_transinfo(ahd
,
2403 starget
->channel
+ 'A',
2404 shost
->this_id
, starget
->id
, &tstate
);
2405 struct ahd_devinfo devinfo
;
2406 unsigned int ppr_options
= 0;
2407 unsigned int period
= 0;
2408 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2409 unsigned long flags
;
2412 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2413 printf("%s: set offset to %d\n", ahd_name(ahd
), offset
);
2416 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2417 starget
->channel
+ 'A', ROLE_INITIATOR
);
2419 period
= tinfo
->goal
.period
;
2420 ppr_options
= tinfo
->goal
.ppr_options
;
2421 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2422 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2425 ahd_lock(ahd
, &flags
);
2426 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
, ppr_options
,
2427 AHD_TRANS_GOAL
, FALSE
);
2428 ahd_unlock(ahd
, &flags
);
2431 static void ahd_linux_set_dt(struct scsi_target
*starget
, int dt
)
2433 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2434 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2435 struct ahd_tmode_tstate
*tstate
;
2436 struct ahd_initiator_tinfo
*tinfo
2437 = ahd_fetch_transinfo(ahd
,
2438 starget
->channel
+ 'A',
2439 shost
->this_id
, starget
->id
, &tstate
);
2440 struct ahd_devinfo devinfo
;
2441 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2442 & ~MSG_EXT_PPR_DT_REQ
;
2443 unsigned int period
= tinfo
->goal
.period
;
2444 unsigned int width
= tinfo
->goal
.width
;
2445 unsigned long flags
;
2448 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2449 printf("%s: %s DT\n", ahd_name(ahd
),
2450 dt
? "enabling" : "disabling");
2453 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2455 ahd_linux_set_width(starget
, 1);
2458 period
= 10; /* If resetting DT, period must be >= 25ns */
2459 /* IU is invalid without DT set */
2460 ppr_options
&= ~MSG_EXT_PPR_IU_REQ
;
2462 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2463 starget
->channel
+ 'A', ROLE_INITIATOR
);
2464 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2465 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2467 ahd_lock(ahd
, &flags
);
2468 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2469 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2470 ahd_unlock(ahd
, &flags
);
2473 static void ahd_linux_set_qas(struct scsi_target
*starget
, int qas
)
2475 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2476 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2477 struct ahd_tmode_tstate
*tstate
;
2478 struct ahd_initiator_tinfo
*tinfo
2479 = ahd_fetch_transinfo(ahd
,
2480 starget
->channel
+ 'A',
2481 shost
->this_id
, starget
->id
, &tstate
);
2482 struct ahd_devinfo devinfo
;
2483 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2484 & ~MSG_EXT_PPR_QAS_REQ
;
2485 unsigned int period
= tinfo
->goal
.period
;
2487 unsigned long flags
;
2490 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2491 printf("%s: %s QAS\n", ahd_name(ahd
),
2492 qas
? "enabling" : "disabling");
2496 ppr_options
|= MSG_EXT_PPR_QAS_REQ
;
2499 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2501 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2502 starget
->channel
+ 'A', ROLE_INITIATOR
);
2503 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2504 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2506 ahd_lock(ahd
, &flags
);
2507 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2508 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2509 ahd_unlock(ahd
, &flags
);
2512 static void ahd_linux_set_iu(struct scsi_target
*starget
, int iu
)
2514 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2515 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2516 struct ahd_tmode_tstate
*tstate
;
2517 struct ahd_initiator_tinfo
*tinfo
2518 = ahd_fetch_transinfo(ahd
,
2519 starget
->channel
+ 'A',
2520 shost
->this_id
, starget
->id
, &tstate
);
2521 struct ahd_devinfo devinfo
;
2522 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2523 & ~MSG_EXT_PPR_IU_REQ
;
2524 unsigned int period
= tinfo
->goal
.period
;
2526 unsigned long flags
;
2529 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2530 printf("%s: %s IU\n", ahd_name(ahd
),
2531 iu
? "enabling" : "disabling");
2535 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2536 ppr_options
|= MSG_EXT_PPR_DT_REQ
; /* IU requires DT */
2539 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2541 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2542 starget
->channel
+ 'A', ROLE_INITIATOR
);
2543 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2544 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2546 ahd_lock(ahd
, &flags
);
2547 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2548 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2549 ahd_unlock(ahd
, &flags
);
2552 static void ahd_linux_set_rd_strm(struct scsi_target
*starget
, int rdstrm
)
2554 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2555 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2556 struct ahd_tmode_tstate
*tstate
;
2557 struct ahd_initiator_tinfo
*tinfo
2558 = ahd_fetch_transinfo(ahd
,
2559 starget
->channel
+ 'A',
2560 shost
->this_id
, starget
->id
, &tstate
);
2561 struct ahd_devinfo devinfo
;
2562 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2563 & ~MSG_EXT_PPR_RD_STRM
;
2564 unsigned int period
= tinfo
->goal
.period
;
2565 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2566 unsigned long flags
;
2569 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2570 printf("%s: %s Read Streaming\n", ahd_name(ahd
),
2571 rdstrm
? "enabling" : "disabling");
2575 ppr_options
|= MSG_EXT_PPR_RD_STRM
;
2577 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2578 starget
->channel
+ 'A', ROLE_INITIATOR
);
2579 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2580 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2582 ahd_lock(ahd
, &flags
);
2583 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2584 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2585 ahd_unlock(ahd
, &flags
);
2588 static void ahd_linux_set_wr_flow(struct scsi_target
*starget
, int wrflow
)
2590 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2591 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2592 struct ahd_tmode_tstate
*tstate
;
2593 struct ahd_initiator_tinfo
*tinfo
2594 = ahd_fetch_transinfo(ahd
,
2595 starget
->channel
+ 'A',
2596 shost
->this_id
, starget
->id
, &tstate
);
2597 struct ahd_devinfo devinfo
;
2598 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2599 & ~MSG_EXT_PPR_WR_FLOW
;
2600 unsigned int period
= tinfo
->goal
.period
;
2601 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2602 unsigned long flags
;
2605 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2606 printf("%s: %s Write Flow Control\n", ahd_name(ahd
),
2607 wrflow
? "enabling" : "disabling");
2611 ppr_options
|= MSG_EXT_PPR_WR_FLOW
;
2613 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2614 starget
->channel
+ 'A', ROLE_INITIATOR
);
2615 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2616 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2618 ahd_lock(ahd
, &flags
);
2619 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2620 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2621 ahd_unlock(ahd
, &flags
);
2624 static void ahd_linux_set_rti(struct scsi_target
*starget
, int rti
)
2626 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2627 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2628 struct ahd_tmode_tstate
*tstate
;
2629 struct ahd_initiator_tinfo
*tinfo
2630 = ahd_fetch_transinfo(ahd
,
2631 starget
->channel
+ 'A',
2632 shost
->this_id
, starget
->id
, &tstate
);
2633 struct ahd_devinfo devinfo
;
2634 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2636 unsigned int period
= tinfo
->goal
.period
;
2637 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2638 unsigned long flags
;
2640 if ((ahd
->features
& AHD_RTI
) == 0) {
2642 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2643 printf("%s: RTI not available\n", ahd_name(ahd
));
2649 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2650 printf("%s: %s RTI\n", ahd_name(ahd
),
2651 rti
? "enabling" : "disabling");
2655 ppr_options
|= MSG_EXT_PPR_RTI
;
2657 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2658 starget
->channel
+ 'A', ROLE_INITIATOR
);
2659 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2660 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2662 ahd_lock(ahd
, &flags
);
2663 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2664 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2665 ahd_unlock(ahd
, &flags
);
2668 static void ahd_linux_set_pcomp_en(struct scsi_target
*starget
, int pcomp
)
2670 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2671 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2672 struct ahd_tmode_tstate
*tstate
;
2673 struct ahd_initiator_tinfo
*tinfo
2674 = ahd_fetch_transinfo(ahd
,
2675 starget
->channel
+ 'A',
2676 shost
->this_id
, starget
->id
, &tstate
);
2677 struct ahd_devinfo devinfo
;
2678 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2679 & ~MSG_EXT_PPR_PCOMP_EN
;
2680 unsigned int period
= tinfo
->goal
.period
;
2681 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2682 unsigned long flags
;
2685 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2686 printf("%s: %s Precompensation\n", ahd_name(ahd
),
2687 pcomp
? "Enable" : "Disable");
2691 ppr_options
|= MSG_EXT_PPR_PCOMP_EN
;
2693 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2694 starget
->channel
+ 'A', ROLE_INITIATOR
);
2695 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2696 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2698 ahd_lock(ahd
, &flags
);
2699 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2700 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2701 ahd_unlock(ahd
, &flags
);
2704 static void ahd_linux_set_hold_mcs(struct scsi_target
*starget
, int hold
)
2706 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2707 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2708 struct ahd_tmode_tstate
*tstate
;
2709 struct ahd_initiator_tinfo
*tinfo
2710 = ahd_fetch_transinfo(ahd
,
2711 starget
->channel
+ 'A',
2712 shost
->this_id
, starget
->id
, &tstate
);
2713 struct ahd_devinfo devinfo
;
2714 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2715 & ~MSG_EXT_PPR_HOLD_MCS
;
2716 unsigned int period
= tinfo
->goal
.period
;
2717 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2718 unsigned long flags
;
2721 ppr_options
|= MSG_EXT_PPR_HOLD_MCS
;
2723 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2724 starget
->channel
+ 'A', ROLE_INITIATOR
);
2725 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2726 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2728 ahd_lock(ahd
, &flags
);
2729 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2730 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2731 ahd_unlock(ahd
, &flags
);
2736 static struct spi_function_template ahd_linux_transport_functions
= {
2737 .set_offset
= ahd_linux_set_offset
,
2739 .set_period
= ahd_linux_set_period
,
2741 .set_width
= ahd_linux_set_width
,
2743 .set_dt
= ahd_linux_set_dt
,
2745 .set_iu
= ahd_linux_set_iu
,
2747 .set_qas
= ahd_linux_set_qas
,
2749 .set_rd_strm
= ahd_linux_set_rd_strm
,
2751 .set_wr_flow
= ahd_linux_set_wr_flow
,
2753 .set_rti
= ahd_linux_set_rti
,
2755 .set_pcomp_en
= ahd_linux_set_pcomp_en
,
2757 .set_hold_mcs
= ahd_linux_set_hold_mcs
,
2762 ahd_linux_init(void)
2767 * If we've been passed any parameters, process them now.
2770 aic79xx_setup(aic79xx
);
2772 ahd_linux_transport_template
=
2773 spi_attach_transport(&ahd_linux_transport_functions
);
2774 if (!ahd_linux_transport_template
)
2777 scsi_transport_reserve_target(ahd_linux_transport_template
,
2778 sizeof(struct ahd_linux_target
));
2779 scsi_transport_reserve_device(ahd_linux_transport_template
,
2780 sizeof(struct ahd_linux_device
));
2782 error
= ahd_linux_pci_init();
2784 spi_release_transport(ahd_linux_transport_template
);
2789 ahd_linux_exit(void)
2791 ahd_linux_pci_exit();
2792 spi_release_transport(ahd_linux_transport_template
);
2795 module_init(ahd_linux_init
);
2796 module_exit(ahd_linux_exit
);