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
;
318 * Module information and settable options.
320 static char *aic79xx
= NULL
;
322 MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>");
323 MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver");
324 MODULE_LICENSE("Dual BSD/GPL");
325 MODULE_VERSION(AIC79XX_DRIVER_VERSION
);
326 module_param(aic79xx
, charp
, 0444);
327 MODULE_PARM_DESC(aic79xx
,
328 "period delimited, options string.\n"
329 " verbose Enable verbose/diagnostic logging\n"
330 " allow_memio Allow device registers to be memory mapped\n"
331 " debug Bitmask of debug values to enable\n"
332 " no_reset Supress initial bus resets\n"
333 " extended Enable extended geometry on all controllers\n"
334 " periodic_otag Send an ordered tagged transaction\n"
335 " periodically to prevent tag starvation.\n"
336 " This may be required by some older disk\n"
337 " or drives/RAID arrays.\n"
338 " reverse_scan Sort PCI devices highest Bus/Slot to lowest\n"
339 " tag_info:<tag_str> Set per-target tag depth\n"
340 " global_tag_depth:<int> Global tag depth for all targets on all buses\n"
341 " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
342 " precomp:<pcomp_list> Set the signal precompensation (0-7).\n"
343 " amplitude:<int> Set the signal amplitude (0-7).\n"
344 " seltime:<int> Selection Timeout:\n"
345 " (0/256ms,1/128ms,2/64ms,3/32ms)\n"
347 " Sample /etc/modprobe.conf line:\n"
348 " Enable verbose logging\n"
349 " Set tag depth on Controller 2/Target 2 to 10 tags\n"
350 " Shorten the selection timeout to 128ms\n"
352 " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n"
355 static void ahd_linux_handle_scsi_status(struct ahd_softc
*,
356 struct scsi_device
*,
358 static void ahd_linux_queue_cmd_complete(struct ahd_softc
*ahd
,
359 struct scsi_cmnd
*cmd
);
360 static void ahd_linux_sem_timeout(u_long arg
);
361 static int ahd_linux_queue_recovery_cmd(struct scsi_cmnd
*cmd
, scb_flag flag
);
362 static void ahd_linux_initialize_scsi_bus(struct ahd_softc
*ahd
);
363 static u_int
ahd_linux_user_tagdepth(struct ahd_softc
*ahd
,
364 struct ahd_devinfo
*devinfo
);
365 static void ahd_linux_device_queue_depth(struct scsi_device
*);
366 static int ahd_linux_run_command(struct ahd_softc
*,
367 struct ahd_linux_device
*,
369 static void ahd_linux_setup_tag_info_global(char *p
);
370 static int aic79xx_setup(char *c
);
372 static int ahd_linux_unit
;
375 /****************************** Inlines ***************************************/
376 static __inline
void ahd_linux_unmap_scb(struct ahd_softc
*, struct scb
*);
379 ahd_linux_unmap_scb(struct ahd_softc
*ahd
, struct scb
*scb
)
381 struct scsi_cmnd
*cmd
;
385 direction
= cmd
->sc_data_direction
;
386 ahd_sync_sglist(ahd
, scb
, BUS_DMASYNC_POSTWRITE
);
387 if (cmd
->use_sg
!= 0) {
388 struct scatterlist
*sg
;
390 sg
= (struct scatterlist
*)cmd
->request_buffer
;
391 pci_unmap_sg(ahd
->dev_softc
, sg
, cmd
->use_sg
, direction
);
392 } else if (cmd
->request_bufflen
!= 0) {
393 pci_unmap_single(ahd
->dev_softc
,
394 scb
->platform_data
->buf_busaddr
,
395 cmd
->request_bufflen
, direction
);
399 /******************************** Macros **************************************/
400 #define BUILD_SCSIID(ahd, cmd) \
401 (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id)
404 * Return a string describing the driver.
407 ahd_linux_info(struct Scsi_Host
*host
)
409 static char buffer
[512];
412 struct ahd_softc
*ahd
;
415 ahd
= *(struct ahd_softc
**)host
->hostdata
;
416 memset(bp
, 0, sizeof(buffer
));
417 strcpy(bp
, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
418 strcat(bp
, AIC79XX_DRIVER_VERSION
);
421 strcat(bp
, ahd
->description
);
424 ahd_controller_info(ahd
, ahd_info
);
425 strcat(bp
, ahd_info
);
432 * Queue an SCB to the controller.
435 ahd_linux_queue(struct scsi_cmnd
* cmd
, void (*scsi_done
) (struct scsi_cmnd
*))
437 struct ahd_softc
*ahd
;
438 struct ahd_linux_device
*dev
= scsi_transport_device_data(cmd
->device
);
439 int rtn
= SCSI_MLQUEUE_HOST_BUSY
;
442 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
444 ahd_lock(ahd
, &flags
);
445 if (ahd
->platform_data
->qfrozen
== 0) {
446 cmd
->scsi_done
= scsi_done
;
447 cmd
->result
= CAM_REQ_INPROG
<< 16;
448 rtn
= ahd_linux_run_command(ahd
, dev
, cmd
);
451 ahd_unlock(ahd
, &flags
);
455 static inline struct scsi_target
**
456 ahd_linux_target_in_softc(struct scsi_target
*starget
)
458 struct ahd_softc
*ahd
=
459 *((struct ahd_softc
**)dev_to_shost(&starget
->dev
)->hostdata
);
460 unsigned int target_offset
;
462 target_offset
= starget
->id
;
463 if (starget
->channel
!= 0)
466 return &ahd
->platform_data
->starget
[target_offset
];
470 ahd_linux_target_alloc(struct scsi_target
*starget
)
472 struct ahd_softc
*ahd
=
473 *((struct ahd_softc
**)dev_to_shost(&starget
->dev
)->hostdata
);
475 struct scsi_target
**ahd_targp
= ahd_linux_target_in_softc(starget
);
476 struct ahd_linux_target
*targ
= scsi_transport_target_data(starget
);
477 struct ahd_devinfo devinfo
;
478 struct ahd_initiator_tinfo
*tinfo
;
479 struct ahd_tmode_tstate
*tstate
;
480 char channel
= starget
->channel
+ 'A';
482 ahd_lock(ahd
, &flags
);
484 BUG_ON(*ahd_targp
!= NULL
);
486 *ahd_targp
= starget
;
487 memset(targ
, 0, sizeof(*targ
));
489 tinfo
= ahd_fetch_transinfo(ahd
, channel
, ahd
->our_id
,
490 starget
->id
, &tstate
);
491 ahd_compile_devinfo(&devinfo
, ahd
->our_id
, starget
->id
,
492 CAM_LUN_WILDCARD
, channel
,
494 spi_min_period(starget
) = AHD_SYNCRATE_MAX
; /* We can do U320 */
495 if ((ahd
->bugs
& AHD_PACED_NEGTABLE_BUG
) != 0)
496 spi_max_offset(starget
) = MAX_OFFSET_PACED_BUG
;
498 spi_max_offset(starget
) = MAX_OFFSET_PACED
;
499 spi_max_width(starget
) = ahd
->features
& AHD_WIDE
;
501 ahd_set_syncrate(ahd
, &devinfo
, 0, 0, 0,
502 AHD_TRANS_GOAL
, /*paused*/FALSE
);
503 ahd_set_width(ahd
, &devinfo
, MSG_EXT_WDTR_BUS_8_BIT
,
504 AHD_TRANS_GOAL
, /*paused*/FALSE
);
505 ahd_unlock(ahd
, &flags
);
511 ahd_linux_target_destroy(struct scsi_target
*starget
)
513 struct scsi_target
**ahd_targp
= ahd_linux_target_in_softc(starget
);
519 ahd_linux_slave_alloc(struct scsi_device
*sdev
)
521 struct ahd_softc
*ahd
=
522 *((struct ahd_softc
**)sdev
->host
->hostdata
);
523 struct scsi_target
*starget
= sdev
->sdev_target
;
524 struct ahd_linux_target
*targ
= scsi_transport_target_data(starget
);
525 struct ahd_linux_device
*dev
;
528 printf("%s: Slave Alloc %d\n", ahd_name(ahd
), sdev
->id
);
530 BUG_ON(targ
->sdev
[sdev
->lun
] != NULL
);
532 dev
= scsi_transport_device_data(sdev
);
533 memset(dev
, 0, sizeof(*dev
));
536 * We start out life using untagged
537 * transactions of which we allow one.
542 * Set maxtags to 0. This will be changed if we
543 * later determine that we are dealing with
544 * a tagged queuing capable device.
548 targ
->sdev
[sdev
->lun
] = sdev
;
554 ahd_linux_slave_configure(struct scsi_device
*sdev
)
556 struct ahd_softc
*ahd
;
558 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
560 sdev_printk(KERN_INFO
, sdev
, "Slave Configure\n");
562 ahd_linux_device_queue_depth(sdev
);
564 /* Initial Domain Validation */
565 if (!spi_initial_dv(sdev
->sdev_target
))
572 ahd_linux_slave_destroy(struct scsi_device
*sdev
)
574 struct ahd_softc
*ahd
;
575 struct ahd_linux_device
*dev
= scsi_transport_device_data(sdev
);
576 struct ahd_linux_target
*targ
= scsi_transport_target_data(sdev
->sdev_target
);
578 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
580 printf("%s: Slave Destroy %d\n", ahd_name(ahd
), sdev
->id
);
584 targ
->sdev
[sdev
->lun
] = NULL
;
588 #if defined(__i386__)
590 * Return the disk geometry for the given SCSI device.
593 ahd_linux_biosparam(struct scsi_device
*sdev
, struct block_device
*bdev
,
594 sector_t capacity
, int geom
[])
602 struct ahd_softc
*ahd
;
604 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
606 bh
= scsi_bios_ptable(bdev
);
608 ret
= scsi_partsize(bh
, capacity
,
609 &geom
[2], &geom
[0], &geom
[1]);
616 cylinders
= aic_sector_div(capacity
, heads
, sectors
);
618 if (aic79xx_extended
!= 0)
621 extended
= (ahd
->flags
& AHD_EXTENDED_TRANS_A
) != 0;
622 if (extended
&& cylinders
>= 1024) {
625 cylinders
= aic_sector_div(capacity
, heads
, sectors
);
635 * Abort the current SCSI command(s).
638 ahd_linux_abort(struct scsi_cmnd
*cmd
)
642 error
= ahd_linux_queue_recovery_cmd(cmd
, SCB_ABORT
);
644 printf("aic79xx_abort returns 0x%x\n", error
);
649 * Attempt to send a target reset message to the device that timed out.
652 ahd_linux_dev_reset(struct scsi_cmnd
*cmd
)
656 error
= ahd_linux_queue_recovery_cmd(cmd
, SCB_DEVICE_RESET
);
658 printf("aic79xx_dev_reset returns 0x%x\n", error
);
663 * Reset the SCSI bus.
666 ahd_linux_bus_reset(struct scsi_cmnd
*cmd
)
668 struct ahd_softc
*ahd
;
672 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
674 if ((ahd_debug
& AHD_SHOW_RECOVERY
) != 0)
675 printf("%s: Bus reset called for cmd %p\n",
679 found
= ahd_reset_channel(ahd
, scmd_channel(cmd
) + 'A',
680 /*initiate reset*/TRUE
);
684 printf("%s: SCSI bus reset delivered. "
685 "%d SCBs aborted.\n", ahd_name(ahd
), found
);
690 struct scsi_host_template aic79xx_driver_template
= {
691 .module
= THIS_MODULE
,
693 .proc_name
= "aic79xx",
694 .proc_info
= ahd_linux_proc_info
,
695 .info
= ahd_linux_info
,
696 .queuecommand
= ahd_linux_queue
,
697 .eh_abort_handler
= ahd_linux_abort
,
698 .eh_device_reset_handler
= ahd_linux_dev_reset
,
699 .eh_bus_reset_handler
= ahd_linux_bus_reset
,
700 #if defined(__i386__)
701 .bios_param
= ahd_linux_biosparam
,
703 .can_queue
= AHD_MAX_QUEUE
,
706 .use_clustering
= ENABLE_CLUSTERING
,
707 .slave_alloc
= ahd_linux_slave_alloc
,
708 .slave_configure
= ahd_linux_slave_configure
,
709 .slave_destroy
= ahd_linux_slave_destroy
,
710 .target_alloc
= ahd_linux_target_alloc
,
711 .target_destroy
= ahd_linux_target_destroy
,
714 /******************************** Bus DMA *************************************/
716 ahd_dma_tag_create(struct ahd_softc
*ahd
, bus_dma_tag_t parent
,
717 bus_size_t alignment
, bus_size_t boundary
,
718 dma_addr_t lowaddr
, dma_addr_t highaddr
,
719 bus_dma_filter_t
*filter
, void *filterarg
,
720 bus_size_t maxsize
, int nsegments
,
721 bus_size_t maxsegsz
, int flags
, bus_dma_tag_t
*ret_tag
)
725 dmat
= malloc(sizeof(*dmat
), M_DEVBUF
, M_NOWAIT
);
730 * Linux is very simplistic about DMA memory. For now don't
731 * maintain all specification information. Once Linux supplies
732 * better facilities for doing these operations, or the
733 * needs of this particular driver change, we might need to do
736 dmat
->alignment
= alignment
;
737 dmat
->boundary
= boundary
;
738 dmat
->maxsize
= maxsize
;
744 ahd_dma_tag_destroy(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
)
746 free(dmat
, M_DEVBUF
);
750 ahd_dmamem_alloc(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, void** vaddr
,
751 int flags
, bus_dmamap_t
*mapp
)
753 *vaddr
= pci_alloc_consistent(ahd
->dev_softc
,
754 dmat
->maxsize
, mapp
);
761 ahd_dmamem_free(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
,
762 void* vaddr
, bus_dmamap_t map
)
764 pci_free_consistent(ahd
->dev_softc
, dmat
->maxsize
,
769 ahd_dmamap_load(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
,
770 void *buf
, bus_size_t buflen
, bus_dmamap_callback_t
*cb
,
771 void *cb_arg
, int flags
)
774 * Assume for now that this will only be used during
775 * initialization and not for per-transaction buffer mapping.
777 bus_dma_segment_t stack_sg
;
779 stack_sg
.ds_addr
= map
;
780 stack_sg
.ds_len
= dmat
->maxsize
;
781 cb(cb_arg
, &stack_sg
, /*nseg*/1, /*error*/0);
786 ahd_dmamap_destroy(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
)
791 ahd_dmamap_unload(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
)
797 /********************* Platform Dependent Functions ***************************/
799 * Compare "left hand" softc with "right hand" softc, returning:
800 * < 0 - lahd has a lower priority than rahd
801 * 0 - Softcs are equal
802 * > 0 - lahd has a higher priority than rahd
805 ahd_softc_comp(struct ahd_softc
*lahd
, struct ahd_softc
*rahd
)
810 * Under Linux, cards are ordered as follows:
811 * 1) PCI devices that are marked as the boot controller.
812 * 2) PCI devices with BIOS enabled sorted by bus/slot/func.
813 * 3) All remaining PCI devices sorted by bus/slot/func.
816 value
= (lahd
->flags
& AHD_BOOT_CHANNEL
)
817 - (rahd
->flags
& AHD_BOOT_CHANNEL
);
819 /* Controllers set for boot have a *higher* priority */
823 value
= (lahd
->flags
& AHD_BIOS_ENABLED
)
824 - (rahd
->flags
& AHD_BIOS_ENABLED
);
826 /* Controllers with BIOS enabled have a *higher* priority */
829 /* Still equal. Sort by bus/slot/func. */
830 if (aic79xx_reverse_scan
!= 0)
831 value
= ahd_get_pci_bus(lahd
->dev_softc
)
832 - ahd_get_pci_bus(rahd
->dev_softc
);
834 value
= ahd_get_pci_bus(rahd
->dev_softc
)
835 - ahd_get_pci_bus(lahd
->dev_softc
);
838 if (aic79xx_reverse_scan
!= 0)
839 value
= ahd_get_pci_slot(lahd
->dev_softc
)
840 - ahd_get_pci_slot(rahd
->dev_softc
);
842 value
= ahd_get_pci_slot(rahd
->dev_softc
)
843 - ahd_get_pci_slot(lahd
->dev_softc
);
847 value
= rahd
->channel
- lahd
->channel
;
852 ahd_linux_setup_iocell_info(u_long index
, int instance
, int targ
, int32_t value
)
856 && (instance
< NUM_ELEMENTS(aic79xx_iocell_info
))) {
857 uint8_t *iocell_info
;
859 iocell_info
= (uint8_t*)&aic79xx_iocell_info
[instance
];
860 iocell_info
[index
] = value
& 0xFFFF;
862 printf("iocell[%d:%ld] = %d\n", instance
, index
, value
);
867 ahd_linux_setup_tag_info_global(char *p
)
871 tags
= simple_strtoul(p
+ 1, NULL
, 0) & 0xff;
872 printf("Setting Global Tags= %d\n", tags
);
874 for (i
= 0; i
< NUM_ELEMENTS(aic79xx_tag_info
); i
++) {
875 for (j
= 0; j
< AHD_NUM_TARGETS
; j
++) {
876 aic79xx_tag_info
[i
].tag_commands
[j
] = tags
;
882 ahd_linux_setup_tag_info(u_long arg
, int instance
, int targ
, int32_t value
)
885 if ((instance
>= 0) && (targ
>= 0)
886 && (instance
< NUM_ELEMENTS(aic79xx_tag_info
))
887 && (targ
< AHD_NUM_TARGETS
)) {
888 aic79xx_tag_info
[instance
].tag_commands
[targ
] = value
& 0x1FF;
890 printf("tag_info[%d:%d] = %d\n", instance
, targ
, value
);
895 ahd_parse_brace_option(char *opt_name
, char *opt_arg
, char *end
, int depth
,
896 void (*callback
)(u_long
, int, int, int32_t),
905 char tok_list
[] = {'.', ',', '{', '}', '\0'};
907 /* All options use a ':' name/arg separator */
915 * Restore separator that may be in
916 * the middle of our option argument.
918 tok_end
= strchr(opt_arg
, '\0');
924 if (instance
== -1) {
931 printf("Malformed Option %s\n",
941 else if (instance
!= -1)
951 else if (instance
>= 0)
960 for (i
= 0; tok_list
[i
]; i
++) {
961 tok_end2
= strchr(opt_arg
, tok_list
[i
]);
962 if ((tok_end2
) && (tok_end2
< tok_end
))
965 callback(callback_arg
, instance
, targ
,
966 simple_strtol(opt_arg
, NULL
, 0));
975 * Handle Linux boot parameters. This routine allows for assigning a value
976 * to a parameter with a ':' between the parameter and the value.
977 * ie. aic79xx=stpwlev:1,extended
980 aic79xx_setup(char *s
)
990 { "extended", &aic79xx_extended
},
991 { "no_reset", &aic79xx_no_reset
},
992 { "verbose", &aic79xx_verbose
},
993 { "allow_memio", &aic79xx_allow_memio
},
995 { "debug", &ahd_debug
},
997 { "reverse_scan", &aic79xx_reverse_scan
},
998 { "periodic_otag", &aic79xx_periodic_otag
},
999 { "pci_parity", &aic79xx_pci_parity
},
1000 { "seltime", &aic79xx_seltime
},
1001 { "tag_info", NULL
},
1002 { "global_tag_depth", NULL
},
1003 { "slewrate", NULL
},
1004 { "precomp", NULL
},
1005 { "amplitude", NULL
},
1008 end
= strchr(s
, '\0');
1011 * XXX ia64 gcc isn't smart enough to know that NUM_ELEMENTS
1012 * will never be 0 in this case.
1016 while ((p
= strsep(&s
, ",.")) != NULL
) {
1019 for (i
= 0; i
< NUM_ELEMENTS(options
); i
++) {
1021 n
= strlen(options
[i
].name
);
1022 if (strncmp(options
[i
].name
, p
, n
) == 0)
1025 if (i
== NUM_ELEMENTS(options
))
1028 if (strncmp(p
, "global_tag_depth", n
) == 0) {
1029 ahd_linux_setup_tag_info_global(p
+ n
);
1030 } else if (strncmp(p
, "tag_info", n
) == 0) {
1031 s
= ahd_parse_brace_option("tag_info", p
+ n
, end
,
1032 2, ahd_linux_setup_tag_info
, 0);
1033 } else if (strncmp(p
, "slewrate", n
) == 0) {
1034 s
= ahd_parse_brace_option("slewrate",
1035 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1036 AIC79XX_SLEWRATE_INDEX
);
1037 } else if (strncmp(p
, "precomp", n
) == 0) {
1038 s
= ahd_parse_brace_option("precomp",
1039 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1040 AIC79XX_PRECOMP_INDEX
);
1041 } else if (strncmp(p
, "amplitude", n
) == 0) {
1042 s
= ahd_parse_brace_option("amplitude",
1043 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1044 AIC79XX_AMPLITUDE_INDEX
);
1045 } else if (p
[n
] == ':') {
1046 *(options
[i
].flag
) = simple_strtoul(p
+ n
+ 1, NULL
, 0);
1047 } else if (!strncmp(p
, "verbose", n
)) {
1048 *(options
[i
].flag
) = 1;
1050 *(options
[i
].flag
) ^= 0xFFFFFFFF;
1056 __setup("aic79xx=", aic79xx_setup
);
1058 uint32_t aic79xx_verbose
;
1061 ahd_linux_register_host(struct ahd_softc
*ahd
, struct scsi_host_template
*template)
1064 struct Scsi_Host
*host
;
1069 template->name
= ahd
->description
;
1070 host
= scsi_host_alloc(template, sizeof(struct ahd_softc
*));
1074 *((struct ahd_softc
**)host
->hostdata
) = ahd
;
1076 ahd
->platform_data
->host
= host
;
1077 host
->can_queue
= AHD_MAX_QUEUE
;
1078 host
->cmd_per_lun
= 2;
1079 host
->sg_tablesize
= AHD_NSEG
;
1080 host
->this_id
= ahd
->our_id
;
1081 host
->irq
= ahd
->platform_data
->irq
;
1082 host
->max_id
= (ahd
->features
& AHD_WIDE
) ? 16 : 8;
1083 host
->max_lun
= AHD_NUM_LUNS
;
1084 host
->max_channel
= 0;
1085 host
->sg_tablesize
= AHD_NSEG
;
1086 ahd_set_unit(ahd
, ahd_linux_unit
++);
1087 sprintf(buf
, "scsi%d", host
->host_no
);
1088 new_name
= malloc(strlen(buf
) + 1, M_DEVBUF
, M_NOWAIT
);
1089 if (new_name
!= NULL
) {
1090 strcpy(new_name
, buf
);
1091 ahd_set_name(ahd
, new_name
);
1093 host
->unique_id
= ahd
->unit
;
1094 ahd_linux_initialize_scsi_bus(ahd
);
1095 ahd_intr_enable(ahd
, TRUE
);
1096 ahd_unlock(ahd
, &s
);
1098 host
->transportt
= ahd_linux_transport_template
;
1100 retval
= scsi_add_host(host
, &ahd
->dev_softc
->dev
);
1102 printk(KERN_WARNING
"aic79xx: scsi_add_host failed\n");
1103 scsi_host_put(host
);
1107 scsi_scan_host(host
);
1112 ahd_linux_get_memsize(void)
1117 return ((uint64_t)si
.totalram
<< PAGE_SHIFT
);
1121 * Place the SCSI bus into a known state by either resetting it,
1122 * or forcing transfer negotiations on the next command to any
1126 ahd_linux_initialize_scsi_bus(struct ahd_softc
*ahd
)
1134 if (aic79xx_no_reset
!= 0)
1135 ahd
->flags
&= ~AHD_RESET_BUS_A
;
1137 if ((ahd
->flags
& AHD_RESET_BUS_A
) != 0)
1138 ahd_reset_channel(ahd
, 'A', /*initiate_reset*/TRUE
);
1140 numtarg
= (ahd
->features
& AHD_WIDE
) ? 16 : 8;
1143 * Force negotiation to async for all targets that
1144 * will not see an initial bus reset.
1146 for (; target_id
< numtarg
; target_id
++) {
1147 struct ahd_devinfo devinfo
;
1148 struct ahd_initiator_tinfo
*tinfo
;
1149 struct ahd_tmode_tstate
*tstate
;
1151 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
1152 target_id
, &tstate
);
1153 ahd_compile_devinfo(&devinfo
, ahd
->our_id
, target_id
,
1154 CAM_LUN_WILDCARD
, 'A', ROLE_INITIATOR
);
1155 ahd_update_neg_request(ahd
, &devinfo
, tstate
,
1156 tinfo
, AHD_NEG_ALWAYS
);
1158 /* Give the bus some time to recover */
1159 if ((ahd
->flags
& AHD_RESET_BUS_A
) != 0) {
1160 ahd_freeze_simq(ahd
);
1161 init_timer(&ahd
->platform_data
->reset_timer
);
1162 ahd
->platform_data
->reset_timer
.data
= (u_long
)ahd
;
1163 ahd
->platform_data
->reset_timer
.expires
=
1164 jiffies
+ (AIC79XX_RESET_DELAY
* HZ
)/1000;
1165 ahd
->platform_data
->reset_timer
.function
=
1166 (ahd_linux_callback_t
*)ahd_release_simq
;
1167 add_timer(&ahd
->platform_data
->reset_timer
);
1172 ahd_platform_alloc(struct ahd_softc
*ahd
, void *platform_arg
)
1174 ahd
->platform_data
=
1175 malloc(sizeof(struct ahd_platform_data
), M_DEVBUF
, M_NOWAIT
);
1176 if (ahd
->platform_data
== NULL
)
1178 memset(ahd
->platform_data
, 0, sizeof(struct ahd_platform_data
));
1179 ahd
->platform_data
->irq
= AHD_LINUX_NOIRQ
;
1181 init_MUTEX_LOCKED(&ahd
->platform_data
->eh_sem
);
1182 ahd
->seltime
= (aic79xx_seltime
& 0x3) << 4;
1187 ahd_platform_free(struct ahd_softc
*ahd
)
1189 struct scsi_target
*starget
;
1192 if (ahd
->platform_data
!= NULL
) {
1193 /* destroy all of the device and target objects */
1194 for (i
= 0; i
< AHD_NUM_TARGETS
; i
++) {
1195 starget
= ahd
->platform_data
->starget
[i
];
1196 if (starget
!= NULL
) {
1197 for (j
= 0; j
< AHD_NUM_LUNS
; j
++) {
1198 struct ahd_linux_target
*targ
=
1199 scsi_transport_target_data(starget
);
1200 if (targ
->sdev
[j
] == NULL
)
1202 targ
->sdev
[j
] = NULL
;
1204 ahd
->platform_data
->starget
[i
] = NULL
;
1208 if (ahd
->platform_data
->irq
!= AHD_LINUX_NOIRQ
)
1209 free_irq(ahd
->platform_data
->irq
, ahd
);
1210 if (ahd
->tags
[0] == BUS_SPACE_PIO
1211 && ahd
->bshs
[0].ioport
!= 0)
1212 release_region(ahd
->bshs
[0].ioport
, 256);
1213 if (ahd
->tags
[1] == BUS_SPACE_PIO
1214 && ahd
->bshs
[1].ioport
!= 0)
1215 release_region(ahd
->bshs
[1].ioport
, 256);
1216 if (ahd
->tags
[0] == BUS_SPACE_MEMIO
1217 && ahd
->bshs
[0].maddr
!= NULL
) {
1218 iounmap(ahd
->bshs
[0].maddr
);
1219 release_mem_region(ahd
->platform_data
->mem_busaddr
,
1222 if (ahd
->platform_data
->host
)
1223 scsi_host_put(ahd
->platform_data
->host
);
1225 free(ahd
->platform_data
, M_DEVBUF
);
1230 ahd_platform_init(struct ahd_softc
*ahd
)
1233 * Lookup and commit any modified IO Cell options.
1235 if (ahd
->unit
< NUM_ELEMENTS(aic79xx_iocell_info
)) {
1236 struct ahd_linux_iocell_opts
*iocell_opts
;
1238 iocell_opts
= &aic79xx_iocell_info
[ahd
->unit
];
1239 if (iocell_opts
->precomp
!= AIC79XX_DEFAULT_PRECOMP
)
1240 AHD_SET_PRECOMP(ahd
, iocell_opts
->precomp
);
1241 if (iocell_opts
->slewrate
!= AIC79XX_DEFAULT_SLEWRATE
)
1242 AHD_SET_SLEWRATE(ahd
, iocell_opts
->slewrate
);
1243 if (iocell_opts
->amplitude
!= AIC79XX_DEFAULT_AMPLITUDE
)
1244 AHD_SET_AMPLITUDE(ahd
, iocell_opts
->amplitude
);
1250 ahd_platform_freeze_devq(struct ahd_softc
*ahd
, struct scb
*scb
)
1252 ahd_platform_abort_scbs(ahd
, SCB_GET_TARGET(ahd
, scb
),
1253 SCB_GET_CHANNEL(ahd
, scb
),
1254 SCB_GET_LUN(scb
), SCB_LIST_NULL
,
1255 ROLE_UNKNOWN
, CAM_REQUEUE_REQ
);
1259 ahd_platform_set_tags(struct ahd_softc
*ahd
, struct ahd_devinfo
*devinfo
,
1262 struct scsi_target
*starget
;
1263 struct ahd_linux_target
*targ
;
1264 struct ahd_linux_device
*dev
;
1265 struct scsi_device
*sdev
;
1269 starget
= ahd
->platform_data
->starget
[devinfo
->target
];
1270 targ
= scsi_transport_target_data(starget
);
1271 BUG_ON(targ
== NULL
);
1272 sdev
= targ
->sdev
[devinfo
->lun
];
1276 dev
= scsi_transport_device_data(sdev
);
1280 was_queuing
= dev
->flags
& (AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
);
1283 case AHD_QUEUE_NONE
:
1286 case AHD_QUEUE_BASIC
:
1287 now_queuing
= AHD_DEV_Q_BASIC
;
1289 case AHD_QUEUE_TAGGED
:
1290 now_queuing
= AHD_DEV_Q_TAGGED
;
1293 if ((dev
->flags
& AHD_DEV_FREEZE_TIL_EMPTY
) == 0
1294 && (was_queuing
!= now_queuing
)
1295 && (dev
->active
!= 0)) {
1296 dev
->flags
|= AHD_DEV_FREEZE_TIL_EMPTY
;
1300 dev
->flags
&= ~(AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
|AHD_DEV_PERIODIC_OTAG
);
1304 usertags
= ahd_linux_user_tagdepth(ahd
, devinfo
);
1307 * Start out agressively and allow our
1308 * dynamic queue depth algorithm to take
1311 dev
->maxtags
= usertags
;
1312 dev
->openings
= dev
->maxtags
- dev
->active
;
1314 if (dev
->maxtags
== 0) {
1316 * Queueing is disabled by the user.
1319 } else if (alg
== AHD_QUEUE_TAGGED
) {
1320 dev
->flags
|= AHD_DEV_Q_TAGGED
;
1321 if (aic79xx_periodic_otag
!= 0)
1322 dev
->flags
|= AHD_DEV_PERIODIC_OTAG
;
1324 dev
->flags
|= AHD_DEV_Q_BASIC
;
1326 /* We can only have one opening. */
1328 dev
->openings
= 1 - dev
->active
;
1331 switch ((dev
->flags
& (AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
))) {
1332 case AHD_DEV_Q_BASIC
:
1333 scsi_adjust_queue_depth(sdev
,
1335 dev
->openings
+ dev
->active
);
1337 case AHD_DEV_Q_TAGGED
:
1338 scsi_adjust_queue_depth(sdev
,
1340 dev
->openings
+ dev
->active
);
1344 * We allow the OS to queue 2 untagged transactions to
1345 * us at any time even though we can only execute them
1346 * serially on the controller/device. This should
1347 * remove some latency.
1349 scsi_adjust_queue_depth(sdev
,
1357 ahd_platform_abort_scbs(struct ahd_softc
*ahd
, int target
, char channel
,
1358 int lun
, u_int tag
, role_t role
, uint32_t status
)
1364 ahd_linux_user_tagdepth(struct ahd_softc
*ahd
, struct ahd_devinfo
*devinfo
)
1366 static int warned_user
;
1370 if ((ahd
->user_discenable
& devinfo
->target_mask
) != 0) {
1371 if (ahd
->unit
>= NUM_ELEMENTS(aic79xx_tag_info
)) {
1373 if (warned_user
== 0) {
1375 "aic79xx: WARNING: Insufficient tag_info instances\n"
1376 "aic79xx: for installed controllers. Using defaults\n"
1377 "aic79xx: Please update the aic79xx_tag_info array in\n"
1378 "aic79xx: the aic79xx_osm.c source file.\n");
1381 tags
= AHD_MAX_QUEUE
;
1383 adapter_tag_info_t
*tag_info
;
1385 tag_info
= &aic79xx_tag_info
[ahd
->unit
];
1386 tags
= tag_info
->tag_commands
[devinfo
->target_offset
];
1387 if (tags
> AHD_MAX_QUEUE
)
1388 tags
= AHD_MAX_QUEUE
;
1395 * Determines the queue depth for a given device.
1398 ahd_linux_device_queue_depth(struct scsi_device
*sdev
)
1400 struct ahd_devinfo devinfo
;
1402 struct ahd_softc
*ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
1404 ahd_compile_devinfo(&devinfo
,
1406 sdev
->sdev_target
->id
, sdev
->lun
,
1407 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1409 tags
= ahd_linux_user_tagdepth(ahd
, &devinfo
);
1410 if (tags
!= 0 && sdev
->tagged_supported
!= 0) {
1412 ahd_set_tags(ahd
, &devinfo
, AHD_QUEUE_TAGGED
);
1413 ahd_print_devinfo(ahd
, &devinfo
);
1414 printf("Tagged Queuing enabled. Depth %d\n", tags
);
1416 ahd_set_tags(ahd
, &devinfo
, AHD_QUEUE_NONE
);
1421 ahd_linux_run_command(struct ahd_softc
*ahd
, struct ahd_linux_device
*dev
,
1422 struct scsi_cmnd
*cmd
)
1425 struct hardware_scb
*hscb
;
1426 struct ahd_initiator_tinfo
*tinfo
;
1427 struct ahd_tmode_tstate
*tstate
;
1432 * Get an scb to use.
1434 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
1435 cmd
->device
->id
, &tstate
);
1436 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) == 0
1437 || (tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0) {
1438 col_idx
= AHD_NEVER_COL_IDX
;
1440 col_idx
= AHD_BUILD_COL_IDX(cmd
->device
->id
,
1443 if ((scb
= ahd_get_scb(ahd
, col_idx
)) == NULL
) {
1444 ahd
->flags
|= AHD_RESOURCE_SHORTAGE
;
1445 return SCSI_MLQUEUE_HOST_BUSY
;
1449 scb
->platform_data
->dev
= dev
;
1451 cmd
->host_scribble
= (char *)scb
;
1454 * Fill out basics of the HSCB.
1457 hscb
->scsiid
= BUILD_SCSIID(ahd
, cmd
);
1458 hscb
->lun
= cmd
->device
->lun
;
1459 scb
->hscb
->task_management
= 0;
1460 mask
= SCB_GET_TARGET_MASK(ahd
, scb
);
1462 if ((ahd
->user_discenable
& mask
) != 0)
1463 hscb
->control
|= DISCENB
;
1465 if ((tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0)
1466 scb
->flags
|= SCB_PACKETIZED
;
1468 if ((tstate
->auto_negotiate
& mask
) != 0) {
1469 scb
->flags
|= SCB_AUTO_NEGOTIATE
;
1470 scb
->hscb
->control
|= MK_MESSAGE
;
1473 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) != 0) {
1475 uint8_t tag_msgs
[2];
1477 msg_bytes
= scsi_populate_tag_msg(cmd
, tag_msgs
);
1478 if (msg_bytes
&& tag_msgs
[0] != MSG_SIMPLE_TASK
) {
1479 hscb
->control
|= tag_msgs
[0];
1480 if (tag_msgs
[0] == MSG_ORDERED_TASK
)
1481 dev
->commands_since_idle_or_otag
= 0;
1483 if (dev
->commands_since_idle_or_otag
== AHD_OTAG_THRESH
1484 && (dev
->flags
& AHD_DEV_Q_TAGGED
) != 0) {
1485 hscb
->control
|= MSG_ORDERED_TASK
;
1486 dev
->commands_since_idle_or_otag
= 0;
1488 hscb
->control
|= MSG_SIMPLE_TASK
;
1492 hscb
->cdb_len
= cmd
->cmd_len
;
1493 memcpy(hscb
->shared_data
.idata
.cdb
, cmd
->cmnd
, hscb
->cdb_len
);
1495 scb
->platform_data
->xfer_len
= 0;
1496 ahd_set_residual(scb
, 0);
1497 ahd_set_sense_residual(scb
, 0);
1499 if (cmd
->use_sg
!= 0) {
1501 struct scatterlist
*cur_seg
;
1505 cur_seg
= (struct scatterlist
*)cmd
->request_buffer
;
1506 dir
= cmd
->sc_data_direction
;
1507 nseg
= pci_map_sg(ahd
->dev_softc
, cur_seg
,
1509 scb
->platform_data
->xfer_len
= 0;
1510 for (sg
= scb
->sg_list
; nseg
> 0; nseg
--, cur_seg
++) {
1514 addr
= sg_dma_address(cur_seg
);
1515 len
= sg_dma_len(cur_seg
);
1516 scb
->platform_data
->xfer_len
+= len
;
1517 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
, len
,
1520 } else if (cmd
->request_bufflen
!= 0) {
1526 dir
= cmd
->sc_data_direction
;
1527 addr
= pci_map_single(ahd
->dev_softc
,
1528 cmd
->request_buffer
,
1529 cmd
->request_bufflen
, dir
);
1530 scb
->platform_data
->xfer_len
= cmd
->request_bufflen
;
1531 scb
->platform_data
->buf_busaddr
= addr
;
1532 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
,
1533 cmd
->request_bufflen
, /*last*/TRUE
);
1536 LIST_INSERT_HEAD(&ahd
->pending_scbs
, scb
, pending_links
);
1539 dev
->commands_issued
++;
1541 if ((dev
->flags
& AHD_DEV_PERIODIC_OTAG
) != 0)
1542 dev
->commands_since_idle_or_otag
++;
1543 scb
->flags
|= SCB_ACTIVE
;
1544 ahd_queue_scb(ahd
, scb
);
1550 * SCSI controller interrupt handler.
1553 ahd_linux_isr(int irq
, void *dev_id
, struct pt_regs
* regs
)
1555 struct ahd_softc
*ahd
;
1559 ahd
= (struct ahd_softc
*) dev_id
;
1560 ahd_lock(ahd
, &flags
);
1561 ours
= ahd_intr(ahd
);
1562 ahd_unlock(ahd
, &flags
);
1563 return IRQ_RETVAL(ours
);
1567 ahd_platform_flushwork(struct ahd_softc
*ahd
)
1573 ahd_send_async(struct ahd_softc
*ahd
, char channel
,
1574 u_int target
, u_int lun
, ac_code code
, void *arg
)
1577 case AC_TRANSFER_NEG
:
1580 struct scsi_target
*starget
;
1581 struct ahd_linux_target
*targ
;
1582 struct info_str info
;
1583 struct ahd_initiator_tinfo
*tinfo
;
1584 struct ahd_tmode_tstate
*tstate
;
1585 unsigned int target_ppr_options
;
1587 BUG_ON(target
== CAM_TARGET_WILDCARD
);
1590 info
.length
= sizeof(buf
);
1593 tinfo
= ahd_fetch_transinfo(ahd
, channel
, ahd
->our_id
,
1597 * Don't bother reporting results while
1598 * negotiations are still pending.
1600 if (tinfo
->curr
.period
!= tinfo
->goal
.period
1601 || tinfo
->curr
.width
!= tinfo
->goal
.width
1602 || tinfo
->curr
.offset
!= tinfo
->goal
.offset
1603 || tinfo
->curr
.ppr_options
!= tinfo
->goal
.ppr_options
)
1604 if (bootverbose
== 0)
1608 * Don't bother reporting results that
1609 * are identical to those last reported.
1611 starget
= ahd
->platform_data
->starget
[target
];
1612 if (starget
== NULL
)
1614 targ
= scsi_transport_target_data(starget
);
1616 target_ppr_options
=
1617 (spi_dt(starget
) ? MSG_EXT_PPR_DT_REQ
: 0)
1618 + (spi_qas(starget
) ? MSG_EXT_PPR_QAS_REQ
: 0)
1619 + (spi_iu(starget
) ? MSG_EXT_PPR_IU_REQ
: 0)
1620 + (spi_rd_strm(starget
) ? MSG_EXT_PPR_RD_STRM
: 0)
1621 + (spi_pcomp_en(starget
) ? MSG_EXT_PPR_PCOMP_EN
: 0)
1622 + (spi_rti(starget
) ? MSG_EXT_PPR_RTI
: 0)
1623 + (spi_wr_flow(starget
) ? MSG_EXT_PPR_WR_FLOW
: 0)
1624 + (spi_hold_mcs(starget
) ? MSG_EXT_PPR_HOLD_MCS
: 0);
1626 if (tinfo
->curr
.period
== spi_period(starget
)
1627 && tinfo
->curr
.width
== spi_width(starget
)
1628 && tinfo
->curr
.offset
== spi_offset(starget
)
1629 && tinfo
->curr
.ppr_options
== target_ppr_options
)
1630 if (bootverbose
== 0)
1633 spi_period(starget
) = tinfo
->curr
.period
;
1634 spi_width(starget
) = tinfo
->curr
.width
;
1635 spi_offset(starget
) = tinfo
->curr
.offset
;
1636 spi_dt(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_DT_REQ
? 1 : 0;
1637 spi_qas(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_QAS_REQ
? 1 : 0;
1638 spi_iu(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
? 1 : 0;
1639 spi_rd_strm(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_RD_STRM
? 1 : 0;
1640 spi_pcomp_en(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_PCOMP_EN
? 1 : 0;
1641 spi_rti(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_RTI
? 1 : 0;
1642 spi_wr_flow(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_WR_FLOW
? 1 : 0;
1643 spi_hold_mcs(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_HOLD_MCS
? 1 : 0;
1644 spi_display_xfer_agreement(starget
);
1649 WARN_ON(lun
!= CAM_LUN_WILDCARD
);
1650 scsi_report_device_reset(ahd
->platform_data
->host
,
1651 channel
- 'A', target
);
1655 if (ahd
->platform_data
->host
!= NULL
) {
1656 scsi_report_bus_reset(ahd
->platform_data
->host
,
1661 panic("ahd_send_async: Unexpected async event");
1666 * Calls the higher level scsi done function and frees the scb.
1669 ahd_done(struct ahd_softc
*ahd
, struct scb
*scb
)
1671 struct scsi_cmnd
*cmd
;
1672 struct ahd_linux_device
*dev
;
1674 if ((scb
->flags
& SCB_ACTIVE
) == 0) {
1675 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb
));
1676 ahd_dump_card_state(ahd
);
1677 panic("Stopping for safety");
1679 LIST_REMOVE(scb
, pending_links
);
1681 dev
= scb
->platform_data
->dev
;
1684 if ((cmd
->result
& (CAM_DEV_QFRZN
<< 16)) != 0) {
1685 cmd
->result
&= ~(CAM_DEV_QFRZN
<< 16);
1688 ahd_linux_unmap_scb(ahd
, scb
);
1691 * Guard against stale sense data.
1692 * The Linux mid-layer assumes that sense
1693 * was retrieved anytime the first byte of
1694 * the sense buffer looks "sane".
1696 cmd
->sense_buffer
[0] = 0;
1697 if (ahd_get_transaction_status(scb
) == CAM_REQ_INPROG
) {
1698 uint32_t amount_xferred
;
1701 ahd_get_transfer_length(scb
) - ahd_get_residual(scb
);
1702 if ((scb
->flags
& SCB_TRANSMISSION_ERROR
) != 0) {
1704 if ((ahd_debug
& AHD_SHOW_MISC
) != 0) {
1705 ahd_print_path(ahd
, scb
);
1706 printf("Set CAM_UNCOR_PARITY\n");
1709 ahd_set_transaction_status(scb
, CAM_UNCOR_PARITY
);
1710 #ifdef AHD_REPORT_UNDERFLOWS
1712 * This code is disabled by default as some
1713 * clients of the SCSI system do not properly
1714 * initialize the underflow parameter. This
1715 * results in spurious termination of commands
1716 * that complete as expected (e.g. underflow is
1717 * allowed as command can return variable amounts
1720 } else if (amount_xferred
< scb
->io_ctx
->underflow
) {
1723 ahd_print_path(ahd
, scb
);
1725 for (i
= 0; i
< scb
->io_ctx
->cmd_len
; i
++)
1726 printf(" 0x%x", scb
->io_ctx
->cmnd
[i
]);
1728 ahd_print_path(ahd
, scb
);
1729 printf("Saw underflow (%ld of %ld bytes). "
1730 "Treated as error\n",
1731 ahd_get_residual(scb
),
1732 ahd_get_transfer_length(scb
));
1733 ahd_set_transaction_status(scb
, CAM_DATA_RUN_ERR
);
1736 ahd_set_transaction_status(scb
, CAM_REQ_CMP
);
1738 } else if (ahd_get_transaction_status(scb
) == CAM_SCSI_STATUS_ERROR
) {
1739 ahd_linux_handle_scsi_status(ahd
, cmd
->device
, scb
);
1742 if (dev
->openings
== 1
1743 && ahd_get_transaction_status(scb
) == CAM_REQ_CMP
1744 && ahd_get_scsi_status(scb
) != SCSI_STATUS_QUEUE_FULL
)
1745 dev
->tag_success_count
++;
1747 * Some devices deal with temporary internal resource
1748 * shortages by returning queue full. When the queue
1749 * full occurrs, we throttle back. Slowly try to get
1750 * back to our previous queue depth.
1752 if ((dev
->openings
+ dev
->active
) < dev
->maxtags
1753 && dev
->tag_success_count
> AHD_TAG_SUCCESS_INTERVAL
) {
1754 dev
->tag_success_count
= 0;
1758 if (dev
->active
== 0)
1759 dev
->commands_since_idle_or_otag
= 0;
1761 if ((scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
1762 printf("Recovery SCB completes\n");
1763 if (ahd_get_transaction_status(scb
) == CAM_BDR_SENT
1764 || ahd_get_transaction_status(scb
) == CAM_REQ_ABORTED
)
1765 ahd_set_transaction_status(scb
, CAM_CMD_TIMEOUT
);
1766 if ((ahd
->platform_data
->flags
& AHD_SCB_UP_EH_SEM
) != 0) {
1767 ahd
->platform_data
->flags
&= ~AHD_SCB_UP_EH_SEM
;
1768 up(&ahd
->platform_data
->eh_sem
);
1772 ahd_free_scb(ahd
, scb
);
1773 ahd_linux_queue_cmd_complete(ahd
, cmd
);
1777 ahd_linux_handle_scsi_status(struct ahd_softc
*ahd
,
1778 struct scsi_device
*sdev
, struct scb
*scb
)
1780 struct ahd_devinfo devinfo
;
1781 struct ahd_linux_device
*dev
= scsi_transport_device_data(sdev
);
1783 ahd_compile_devinfo(&devinfo
,
1785 sdev
->sdev_target
->id
, sdev
->lun
,
1786 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1790 * We don't currently trust the mid-layer to
1791 * properly deal with queue full or busy. So,
1792 * when one occurs, we tell the mid-layer to
1793 * unconditionally requeue the command to us
1794 * so that we can retry it ourselves. We also
1795 * implement our own throttling mechanism so
1796 * we don't clobber the device with too many
1799 switch (ahd_get_scsi_status(scb
)) {
1802 case SCSI_STATUS_CHECK_COND
:
1803 case SCSI_STATUS_CMD_TERMINATED
:
1805 struct scsi_cmnd
*cmd
;
1808 * Copy sense information to the OS's cmd
1809 * structure if it is available.
1812 if ((scb
->flags
& (SCB_SENSE
|SCB_PKT_SENSE
)) != 0) {
1813 struct scsi_status_iu_header
*siu
;
1817 if (scb
->flags
& SCB_SENSE
) {
1818 sense_size
= MIN(sizeof(struct scsi_sense_data
)
1819 - ahd_get_sense_residual(scb
),
1820 sizeof(cmd
->sense_buffer
));
1824 * Copy only the sense data into the provided
1827 siu
= (struct scsi_status_iu_header
*)
1829 sense_size
= MIN(scsi_4btoul(siu
->sense_length
),
1830 sizeof(cmd
->sense_buffer
));
1831 sense_offset
= SIU_SENSE_OFFSET(siu
);
1834 memset(cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
1835 memcpy(cmd
->sense_buffer
,
1836 ahd_get_sense_buf(ahd
, scb
)
1837 + sense_offset
, sense_size
);
1838 cmd
->result
|= (DRIVER_SENSE
<< 24);
1841 if (ahd_debug
& AHD_SHOW_SENSE
) {
1844 printf("Copied %d bytes of sense data at %d:",
1845 sense_size
, sense_offset
);
1846 for (i
= 0; i
< sense_size
; i
++) {
1849 printf("0x%x ", cmd
->sense_buffer
[i
]);
1857 case SCSI_STATUS_QUEUE_FULL
:
1859 * By the time the core driver has returned this
1860 * command, all other commands that were queued
1861 * to us but not the device have been returned.
1862 * This ensures that dev->active is equal to
1863 * the number of commands actually queued to
1866 dev
->tag_success_count
= 0;
1867 if (dev
->active
!= 0) {
1869 * Drop our opening count to the number
1870 * of commands currently outstanding.
1874 if ((ahd_debug
& AHD_SHOW_QFULL
) != 0) {
1875 ahd_print_path(ahd
, scb
);
1876 printf("Dropping tag count to %d\n",
1880 if (dev
->active
== dev
->tags_on_last_queuefull
) {
1882 dev
->last_queuefull_same_count
++;
1884 * If we repeatedly see a queue full
1885 * at the same queue depth, this
1886 * device has a fixed number of tag
1887 * slots. Lock in this tag depth
1888 * so we stop seeing queue fulls from
1891 if (dev
->last_queuefull_same_count
1892 == AHD_LOCK_TAGS_COUNT
) {
1893 dev
->maxtags
= dev
->active
;
1894 ahd_print_path(ahd
, scb
);
1895 printf("Locking max tag count at %d\n",
1899 dev
->tags_on_last_queuefull
= dev
->active
;
1900 dev
->last_queuefull_same_count
= 0;
1902 ahd_set_transaction_status(scb
, CAM_REQUEUE_REQ
);
1903 ahd_set_scsi_status(scb
, SCSI_STATUS_OK
);
1904 ahd_platform_set_tags(ahd
, &devinfo
,
1905 (dev
->flags
& AHD_DEV_Q_BASIC
)
1906 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1910 * Drop down to a single opening, and treat this
1911 * as if the target returned BUSY SCSI status.
1914 ahd_platform_set_tags(ahd
, &devinfo
,
1915 (dev
->flags
& AHD_DEV_Q_BASIC
)
1916 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1917 ahd_set_scsi_status(scb
, SCSI_STATUS_BUSY
);
1922 ahd_linux_queue_cmd_complete(struct ahd_softc
*ahd
, struct scsi_cmnd
*cmd
)
1925 * Map CAM error codes into Linux Error codes. We
1926 * avoid the conversion so that the DV code has the
1927 * full error information available when making
1928 * state change decisions.
1934 status
= ahd_cmd_get_transaction_status(cmd
);
1936 case CAM_REQ_INPROG
:
1938 case CAM_SCSI_STATUS_ERROR
:
1939 new_status
= DID_OK
;
1941 case CAM_REQ_ABORTED
:
1942 new_status
= DID_ABORT
;
1945 new_status
= DID_BUS_BUSY
;
1947 case CAM_REQ_INVALID
:
1948 case CAM_PATH_INVALID
:
1949 new_status
= DID_BAD_TARGET
;
1951 case CAM_SEL_TIMEOUT
:
1952 new_status
= DID_NO_CONNECT
;
1954 case CAM_SCSI_BUS_RESET
:
1956 new_status
= DID_RESET
;
1958 case CAM_UNCOR_PARITY
:
1959 new_status
= DID_PARITY
;
1961 case CAM_CMD_TIMEOUT
:
1962 new_status
= DID_TIME_OUT
;
1965 case CAM_REQ_CMP_ERR
:
1966 case CAM_AUTOSENSE_FAIL
:
1968 case CAM_DATA_RUN_ERR
:
1969 case CAM_UNEXP_BUSFREE
:
1970 case CAM_SEQUENCE_FAIL
:
1971 case CAM_CCB_LEN_ERR
:
1972 case CAM_PROVIDE_FAIL
:
1973 case CAM_REQ_TERMIO
:
1974 case CAM_UNREC_HBA_ERROR
:
1975 case CAM_REQ_TOO_BIG
:
1976 new_status
= DID_ERROR
;
1978 case CAM_REQUEUE_REQ
:
1979 new_status
= DID_REQUEUE
;
1982 /* We should never get here */
1983 new_status
= DID_ERROR
;
1987 ahd_cmd_set_transaction_status(cmd
, new_status
);
1990 cmd
->scsi_done(cmd
);
1994 ahd_linux_sem_timeout(u_long arg
)
1996 struct ahd_softc
*ahd
;
1999 ahd
= (struct ahd_softc
*)arg
;
2002 if ((ahd
->platform_data
->flags
& AHD_SCB_UP_EH_SEM
) != 0) {
2003 ahd
->platform_data
->flags
&= ~AHD_SCB_UP_EH_SEM
;
2004 up(&ahd
->platform_data
->eh_sem
);
2006 ahd_unlock(ahd
, &s
);
2010 ahd_freeze_simq(struct ahd_softc
*ahd
)
2012 ahd
->platform_data
->qfrozen
++;
2013 if (ahd
->platform_data
->qfrozen
== 1) {
2014 scsi_block_requests(ahd
->platform_data
->host
);
2015 ahd_platform_abort_scbs(ahd
, CAM_TARGET_WILDCARD
, ALL_CHANNELS
,
2016 CAM_LUN_WILDCARD
, SCB_LIST_NULL
,
2017 ROLE_INITIATOR
, CAM_REQUEUE_REQ
);
2022 ahd_release_simq(struct ahd_softc
*ahd
)
2029 if (ahd
->platform_data
->qfrozen
> 0)
2030 ahd
->platform_data
->qfrozen
--;
2031 if (ahd
->platform_data
->qfrozen
== 0) {
2034 ahd_unlock(ahd
, &s
);
2036 * There is still a race here. The mid-layer
2037 * should keep its own freeze count and use
2038 * a bottom half handler to run the queues
2039 * so we can unblock with our own lock held.
2042 scsi_unblock_requests(ahd
->platform_data
->host
);
2046 ahd_linux_queue_recovery_cmd(struct scsi_cmnd
*cmd
, scb_flag flag
)
2048 struct ahd_softc
*ahd
;
2049 struct ahd_linux_device
*dev
;
2050 struct scb
*pending_scb
;
2052 u_int active_scbptr
;
2061 ahd_mode_state saved_modes
;
2062 unsigned long flags
;
2067 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
2069 scmd_printk(KERN_INFO
, cmd
,
2070 "Attempting to queue a%s message:",
2071 flag
== SCB_ABORT
? "n ABORT" : " TARGET RESET");
2074 for (cdb_byte
= 0; cdb_byte
< cmd
->cmd_len
; cdb_byte
++)
2075 printf(" 0x%x", cmd
->cmnd
[cdb_byte
]);
2078 ahd_lock(ahd
, &flags
);
2081 * First determine if we currently own this command.
2082 * Start by searching the device queue. If not found
2083 * there, check the pending_scb list. If not found
2084 * at all, and the system wanted us to just abort the
2085 * command, return success.
2087 dev
= scsi_transport_device_data(cmd
->device
);
2091 * No target device for this command exists,
2092 * so we must not still own the command.
2094 scmd_printk(KERN_INFO
, cmd
, "Is not an active device\n");
2100 * See if we can find a matching cmd in the pending list.
2102 LIST_FOREACH(pending_scb
, &ahd
->pending_scbs
, pending_links
) {
2103 if (pending_scb
->io_ctx
== cmd
)
2107 if (pending_scb
== NULL
&& flag
== SCB_DEVICE_RESET
) {
2109 /* Any SCB for this device will do for a target reset */
2110 LIST_FOREACH(pending_scb
, &ahd
->pending_scbs
, pending_links
) {
2111 if (ahd_match_scb(ahd
, pending_scb
,
2113 scmd_channel(cmd
) + 'A',
2115 SCB_LIST_NULL
, ROLE_INITIATOR
))
2120 if (pending_scb
== NULL
) {
2121 scmd_printk(KERN_INFO
, cmd
, "Command not found\n");
2125 if ((pending_scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
2127 * We can't queue two recovery actions using the same SCB
2134 * Ensure that the card doesn't do anything
2135 * behind our back. Also make sure that we
2136 * didn't "just" miss an interrupt that would
2139 was_paused
= ahd_is_paused(ahd
);
2140 ahd_pause_and_flushwork(ahd
);
2143 if ((pending_scb
->flags
& SCB_ACTIVE
) == 0) {
2144 scmd_printk(KERN_INFO
, cmd
, "Command already completed\n");
2148 printf("%s: At time of recovery, card was %spaused\n",
2149 ahd_name(ahd
), was_paused
? "" : "not ");
2150 ahd_dump_card_state(ahd
);
2152 disconnected
= TRUE
;
2153 if (flag
== SCB_ABORT
) {
2154 if (ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2155 cmd
->device
->channel
+ 'A',
2157 pending_scb
->hscb
->tag
,
2158 ROLE_INITIATOR
, CAM_REQ_ABORTED
,
2159 SEARCH_COMPLETE
) > 0) {
2160 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
2161 ahd_name(ahd
), cmd
->device
->channel
,
2162 cmd
->device
->id
, cmd
->device
->lun
);
2166 } else if (ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2167 cmd
->device
->channel
+ 'A',
2168 cmd
->device
->lun
, pending_scb
->hscb
->tag
,
2169 ROLE_INITIATOR
, /*status*/0,
2170 SEARCH_COUNT
) > 0) {
2171 disconnected
= FALSE
;
2174 saved_modes
= ahd_save_modes(ahd
);
2175 ahd_set_modes(ahd
, AHD_MODE_SCSI
, AHD_MODE_SCSI
);
2176 last_phase
= ahd_inb(ahd
, LASTPHASE
);
2177 saved_scbptr
= ahd_get_scbptr(ahd
);
2178 active_scbptr
= saved_scbptr
;
2179 if (disconnected
&& (ahd_inb(ahd
, SEQ_FLAGS
) & NOT_IDENTIFIED
) == 0) {
2180 struct scb
*bus_scb
;
2182 bus_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2183 if (bus_scb
== pending_scb
)
2184 disconnected
= FALSE
;
2185 else if (flag
!= SCB_ABORT
2186 && ahd_inb(ahd
, SAVED_SCSIID
) == pending_scb
->hscb
->scsiid
2187 && ahd_inb(ahd
, SAVED_LUN
) == SCB_GET_LUN(pending_scb
))
2188 disconnected
= FALSE
;
2192 * At this point, pending_scb is the scb associated with the
2193 * passed in command. That command is currently active on the
2194 * bus or is in the disconnected state.
2196 saved_scsiid
= ahd_inb(ahd
, SAVED_SCSIID
);
2197 if (last_phase
!= P_BUSFREE
2198 && (SCB_GET_TAG(pending_scb
) == active_scbptr
2199 || (flag
== SCB_DEVICE_RESET
2200 && SCSIID_TARGET(ahd
, saved_scsiid
) == scmd_id(cmd
)))) {
2203 * We're active on the bus, so assert ATN
2204 * and hope that the target responds.
2206 pending_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2207 pending_scb
->flags
|= SCB_RECOVERY_SCB
|flag
;
2208 ahd_outb(ahd
, MSG_OUT
, HOST_MSG
);
2209 ahd_outb(ahd
, SCSISIGO
, last_phase
|ATNO
);
2210 scmd_printk(KERN_INFO
, cmd
, "Device is active, asserting ATN\n");
2212 } else if (disconnected
) {
2215 * Actually re-queue this SCB in an attempt
2216 * to select the device before it reconnects.
2218 pending_scb
->flags
|= SCB_RECOVERY_SCB
|SCB_ABORT
;
2219 ahd_set_scbptr(ahd
, SCB_GET_TAG(pending_scb
));
2220 pending_scb
->hscb
->cdb_len
= 0;
2221 pending_scb
->hscb
->task_attribute
= 0;
2222 pending_scb
->hscb
->task_management
= SIU_TASKMGMT_ABORT_TASK
;
2224 if ((pending_scb
->flags
& SCB_PACKETIZED
) != 0) {
2226 * Mark the SCB has having an outstanding
2227 * task management function. Should the command
2228 * complete normally before the task management
2229 * function can be sent, the host will be notified
2230 * to abort our requeued SCB.
2232 ahd_outb(ahd
, SCB_TASK_MANAGEMENT
,
2233 pending_scb
->hscb
->task_management
);
2236 * If non-packetized, set the MK_MESSAGE control
2237 * bit indicating that we desire to send a message.
2238 * We also set the disconnected flag since there is
2239 * no guarantee that our SCB control byte matches
2240 * the version on the card. We don't want the
2241 * sequencer to abort the command thinking an
2242 * unsolicited reselection occurred.
2244 pending_scb
->hscb
->control
|= MK_MESSAGE
|DISCONNECTED
;
2247 * The sequencer will never re-reference the
2248 * in-core SCB. To make sure we are notified
2249 * during reslection, set the MK_MESSAGE flag in
2250 * the card's copy of the SCB.
2252 ahd_outb(ahd
, SCB_CONTROL
,
2253 ahd_inb(ahd
, SCB_CONTROL
)|MK_MESSAGE
);
2257 * Clear out any entries in the QINFIFO first
2258 * so we are the next SCB for this target
2261 ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2262 cmd
->device
->channel
+ 'A', cmd
->device
->lun
,
2263 SCB_LIST_NULL
, ROLE_INITIATOR
,
2264 CAM_REQUEUE_REQ
, SEARCH_COMPLETE
);
2265 ahd_qinfifo_requeue_tail(ahd
, pending_scb
);
2266 ahd_set_scbptr(ahd
, saved_scbptr
);
2267 ahd_print_path(ahd
, pending_scb
);
2268 printf("Device is disconnected, re-queuing SCB\n");
2271 scmd_printk(KERN_INFO
, cmd
, "Unable to deliver message\n");
2278 * Our assumption is that if we don't have the command, no
2279 * recovery action was required, so we return success. Again,
2280 * the semantics of the mid-layer recovery engine are not
2281 * well defined, so this may change in time.
2288 struct timer_list timer
;
2291 ahd
->platform_data
->flags
|= AHD_SCB_UP_EH_SEM
;
2292 ahd_unlock(ahd
, &flags
);
2295 timer
.data
= (u_long
)ahd
;
2296 timer
.expires
= jiffies
+ (5 * HZ
);
2297 timer
.function
= ahd_linux_sem_timeout
;
2299 printf("Recovery code sleeping\n");
2300 down(&ahd
->platform_data
->eh_sem
);
2301 printf("Recovery code awake\n");
2302 ret
= del_timer_sync(&timer
);
2304 printf("Timer Expired\n");
2308 ahd_unlock(ahd
, &flags
);
2312 static void ahd_linux_set_width(struct scsi_target
*starget
, int width
)
2314 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2315 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2316 struct ahd_devinfo devinfo
;
2317 unsigned long flags
;
2319 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2320 starget
->channel
+ 'A', ROLE_INITIATOR
);
2321 ahd_lock(ahd
, &flags
);
2322 ahd_set_width(ahd
, &devinfo
, width
, AHD_TRANS_GOAL
, FALSE
);
2323 ahd_unlock(ahd
, &flags
);
2326 static void ahd_linux_set_period(struct scsi_target
*starget
, int period
)
2328 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2329 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2330 struct ahd_tmode_tstate
*tstate
;
2331 struct ahd_initiator_tinfo
*tinfo
2332 = ahd_fetch_transinfo(ahd
,
2333 starget
->channel
+ 'A',
2334 shost
->this_id
, starget
->id
, &tstate
);
2335 struct ahd_devinfo devinfo
;
2336 unsigned int ppr_options
= tinfo
->goal
.ppr_options
;
2338 unsigned long flags
;
2339 unsigned long offset
= tinfo
->goal
.offset
;
2342 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2343 printf("%s: set period to %d\n", ahd_name(ahd
), period
);
2346 offset
= MAX_OFFSET
;
2351 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2353 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2356 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2358 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2359 starget
->channel
+ 'A', ROLE_INITIATOR
);
2361 /* all PPR requests apart from QAS require wide transfers */
2362 if (ppr_options
& ~MSG_EXT_PPR_QAS_REQ
) {
2363 if (spi_width(starget
) == 0)
2364 ppr_options
&= MSG_EXT_PPR_QAS_REQ
;
2367 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2368 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2370 ahd_lock(ahd
, &flags
);
2371 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
,
2372 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2373 ahd_unlock(ahd
, &flags
);
2376 static void ahd_linux_set_offset(struct scsi_target
*starget
, int offset
)
2378 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2379 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2380 struct ahd_tmode_tstate
*tstate
;
2381 struct ahd_initiator_tinfo
*tinfo
2382 = ahd_fetch_transinfo(ahd
,
2383 starget
->channel
+ 'A',
2384 shost
->this_id
, starget
->id
, &tstate
);
2385 struct ahd_devinfo devinfo
;
2386 unsigned int ppr_options
= 0;
2387 unsigned int period
= 0;
2388 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2389 unsigned long flags
;
2392 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2393 printf("%s: set offset to %d\n", ahd_name(ahd
), offset
);
2396 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2397 starget
->channel
+ 'A', ROLE_INITIATOR
);
2399 period
= tinfo
->goal
.period
;
2400 ppr_options
= tinfo
->goal
.ppr_options
;
2401 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2402 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2405 ahd_lock(ahd
, &flags
);
2406 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
, ppr_options
,
2407 AHD_TRANS_GOAL
, FALSE
);
2408 ahd_unlock(ahd
, &flags
);
2411 static void ahd_linux_set_dt(struct scsi_target
*starget
, int dt
)
2413 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2414 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2415 struct ahd_tmode_tstate
*tstate
;
2416 struct ahd_initiator_tinfo
*tinfo
2417 = ahd_fetch_transinfo(ahd
,
2418 starget
->channel
+ 'A',
2419 shost
->this_id
, starget
->id
, &tstate
);
2420 struct ahd_devinfo devinfo
;
2421 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2422 & ~MSG_EXT_PPR_DT_REQ
;
2423 unsigned int period
= tinfo
->goal
.period
;
2424 unsigned int width
= tinfo
->goal
.width
;
2425 unsigned long flags
;
2428 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2429 printf("%s: %s DT\n", ahd_name(ahd
),
2430 dt
? "enabling" : "disabling");
2433 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2435 ahd_linux_set_width(starget
, 1);
2438 period
= 10; /* If resetting DT, period must be >= 25ns */
2439 /* IU is invalid without DT set */
2440 ppr_options
&= ~MSG_EXT_PPR_IU_REQ
;
2442 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2443 starget
->channel
+ 'A', ROLE_INITIATOR
);
2444 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2445 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2447 ahd_lock(ahd
, &flags
);
2448 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2449 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2450 ahd_unlock(ahd
, &flags
);
2453 static void ahd_linux_set_qas(struct scsi_target
*starget
, int qas
)
2455 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2456 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2457 struct ahd_tmode_tstate
*tstate
;
2458 struct ahd_initiator_tinfo
*tinfo
2459 = ahd_fetch_transinfo(ahd
,
2460 starget
->channel
+ 'A',
2461 shost
->this_id
, starget
->id
, &tstate
);
2462 struct ahd_devinfo devinfo
;
2463 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2464 & ~MSG_EXT_PPR_QAS_REQ
;
2465 unsigned int period
= tinfo
->goal
.period
;
2467 unsigned long flags
;
2470 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2471 printf("%s: %s QAS\n", ahd_name(ahd
),
2472 qas
? "enabling" : "disabling");
2476 ppr_options
|= MSG_EXT_PPR_QAS_REQ
;
2479 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2481 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2482 starget
->channel
+ 'A', ROLE_INITIATOR
);
2483 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2484 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2486 ahd_lock(ahd
, &flags
);
2487 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2488 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2489 ahd_unlock(ahd
, &flags
);
2492 static void ahd_linux_set_iu(struct scsi_target
*starget
, int iu
)
2494 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2495 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2496 struct ahd_tmode_tstate
*tstate
;
2497 struct ahd_initiator_tinfo
*tinfo
2498 = ahd_fetch_transinfo(ahd
,
2499 starget
->channel
+ 'A',
2500 shost
->this_id
, starget
->id
, &tstate
);
2501 struct ahd_devinfo devinfo
;
2502 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2503 & ~MSG_EXT_PPR_IU_REQ
;
2504 unsigned int period
= tinfo
->goal
.period
;
2506 unsigned long flags
;
2509 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2510 printf("%s: %s IU\n", ahd_name(ahd
),
2511 iu
? "enabling" : "disabling");
2515 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2516 ppr_options
|= MSG_EXT_PPR_DT_REQ
; /* IU requires DT */
2519 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2521 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2522 starget
->channel
+ 'A', ROLE_INITIATOR
);
2523 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2524 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2526 ahd_lock(ahd
, &flags
);
2527 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2528 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2529 ahd_unlock(ahd
, &flags
);
2532 static void ahd_linux_set_rd_strm(struct scsi_target
*starget
, int rdstrm
)
2534 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2535 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2536 struct ahd_tmode_tstate
*tstate
;
2537 struct ahd_initiator_tinfo
*tinfo
2538 = ahd_fetch_transinfo(ahd
,
2539 starget
->channel
+ 'A',
2540 shost
->this_id
, starget
->id
, &tstate
);
2541 struct ahd_devinfo devinfo
;
2542 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2543 & ~MSG_EXT_PPR_RD_STRM
;
2544 unsigned int period
= tinfo
->goal
.period
;
2545 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2546 unsigned long flags
;
2549 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2550 printf("%s: %s Read Streaming\n", ahd_name(ahd
),
2551 rdstrm
? "enabling" : "disabling");
2555 ppr_options
|= MSG_EXT_PPR_RD_STRM
;
2557 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2558 starget
->channel
+ 'A', ROLE_INITIATOR
);
2559 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2560 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2562 ahd_lock(ahd
, &flags
);
2563 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2564 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2565 ahd_unlock(ahd
, &flags
);
2568 static void ahd_linux_set_wr_flow(struct scsi_target
*starget
, int wrflow
)
2570 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2571 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2572 struct ahd_tmode_tstate
*tstate
;
2573 struct ahd_initiator_tinfo
*tinfo
2574 = ahd_fetch_transinfo(ahd
,
2575 starget
->channel
+ 'A',
2576 shost
->this_id
, starget
->id
, &tstate
);
2577 struct ahd_devinfo devinfo
;
2578 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2579 & ~MSG_EXT_PPR_WR_FLOW
;
2580 unsigned int period
= tinfo
->goal
.period
;
2581 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2582 unsigned long flags
;
2585 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2586 printf("%s: %s Write Flow Control\n", ahd_name(ahd
),
2587 wrflow
? "enabling" : "disabling");
2591 ppr_options
|= MSG_EXT_PPR_WR_FLOW
;
2593 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2594 starget
->channel
+ 'A', ROLE_INITIATOR
);
2595 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2596 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2598 ahd_lock(ahd
, &flags
);
2599 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2600 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2601 ahd_unlock(ahd
, &flags
);
2604 static void ahd_linux_set_rti(struct scsi_target
*starget
, int rti
)
2606 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2607 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2608 struct ahd_tmode_tstate
*tstate
;
2609 struct ahd_initiator_tinfo
*tinfo
2610 = ahd_fetch_transinfo(ahd
,
2611 starget
->channel
+ 'A',
2612 shost
->this_id
, starget
->id
, &tstate
);
2613 struct ahd_devinfo devinfo
;
2614 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2616 unsigned int period
= tinfo
->goal
.period
;
2617 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2618 unsigned long flags
;
2620 if ((ahd
->features
& AHD_RTI
) == 0) {
2622 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2623 printf("%s: RTI not available\n", ahd_name(ahd
));
2629 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2630 printf("%s: %s RTI\n", ahd_name(ahd
),
2631 rti
? "enabling" : "disabling");
2635 ppr_options
|= MSG_EXT_PPR_RTI
;
2637 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2638 starget
->channel
+ 'A', ROLE_INITIATOR
);
2639 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2640 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2642 ahd_lock(ahd
, &flags
);
2643 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2644 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2645 ahd_unlock(ahd
, &flags
);
2648 static void ahd_linux_set_pcomp_en(struct scsi_target
*starget
, int pcomp
)
2650 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2651 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2652 struct ahd_tmode_tstate
*tstate
;
2653 struct ahd_initiator_tinfo
*tinfo
2654 = ahd_fetch_transinfo(ahd
,
2655 starget
->channel
+ 'A',
2656 shost
->this_id
, starget
->id
, &tstate
);
2657 struct ahd_devinfo devinfo
;
2658 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2659 & ~MSG_EXT_PPR_PCOMP_EN
;
2660 unsigned int period
= tinfo
->goal
.period
;
2661 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2662 unsigned long flags
;
2665 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2666 printf("%s: %s Precompensation\n", ahd_name(ahd
),
2667 pcomp
? "Enable" : "Disable");
2671 ppr_options
|= MSG_EXT_PPR_PCOMP_EN
;
2673 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2674 starget
->channel
+ 'A', ROLE_INITIATOR
);
2675 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2676 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2678 ahd_lock(ahd
, &flags
);
2679 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2680 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2681 ahd_unlock(ahd
, &flags
);
2684 static void ahd_linux_set_hold_mcs(struct scsi_target
*starget
, int hold
)
2686 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2687 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2688 struct ahd_tmode_tstate
*tstate
;
2689 struct ahd_initiator_tinfo
*tinfo
2690 = ahd_fetch_transinfo(ahd
,
2691 starget
->channel
+ 'A',
2692 shost
->this_id
, starget
->id
, &tstate
);
2693 struct ahd_devinfo devinfo
;
2694 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2695 & ~MSG_EXT_PPR_HOLD_MCS
;
2696 unsigned int period
= tinfo
->goal
.period
;
2697 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2698 unsigned long flags
;
2701 ppr_options
|= MSG_EXT_PPR_HOLD_MCS
;
2703 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2704 starget
->channel
+ 'A', ROLE_INITIATOR
);
2705 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2706 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2708 ahd_lock(ahd
, &flags
);
2709 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2710 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2711 ahd_unlock(ahd
, &flags
);
2716 static struct spi_function_template ahd_linux_transport_functions
= {
2717 .set_offset
= ahd_linux_set_offset
,
2719 .set_period
= ahd_linux_set_period
,
2721 .set_width
= ahd_linux_set_width
,
2723 .set_dt
= ahd_linux_set_dt
,
2725 .set_iu
= ahd_linux_set_iu
,
2727 .set_qas
= ahd_linux_set_qas
,
2729 .set_rd_strm
= ahd_linux_set_rd_strm
,
2731 .set_wr_flow
= ahd_linux_set_wr_flow
,
2733 .set_rti
= ahd_linux_set_rti
,
2735 .set_pcomp_en
= ahd_linux_set_pcomp_en
,
2737 .set_hold_mcs
= ahd_linux_set_hold_mcs
,
2742 ahd_linux_init(void)
2747 * If we've been passed any parameters, process them now.
2750 aic79xx_setup(aic79xx
);
2752 ahd_linux_transport_template
=
2753 spi_attach_transport(&ahd_linux_transport_functions
);
2754 if (!ahd_linux_transport_template
)
2757 scsi_transport_reserve_target(ahd_linux_transport_template
,
2758 sizeof(struct ahd_linux_target
));
2759 scsi_transport_reserve_device(ahd_linux_transport_template
,
2760 sizeof(struct ahd_linux_device
));
2762 error
= ahd_linux_pci_init();
2764 spi_release_transport(ahd_linux_transport_template
);
2769 ahd_linux_exit(void)
2771 ahd_linux_pci_exit();
2772 spi_release_transport(ahd_linux_transport_template
);
2775 module_init(ahd_linux_init
);
2776 module_exit(ahd_linux_exit
);