2 * Adaptec AIC79xx device driver for Linux.
4 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.c#171 $
6 * --------------------------------------------------------------------------
7 * Copyright (c) 1994-2000 Justin T. Gibbs.
8 * Copyright (c) 1997-1999 Doug Ledford
9 * Copyright (c) 2000-2003 Adaptec Inc.
10 * All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions, and the following disclaimer,
17 * without modification.
18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19 * substantially similar to the "NO WARRANTY" disclaimer below
20 * ("Disclaimer") and any redistribution must be conditioned upon
21 * including a substantially similar Disclaimer requirement for further
22 * binary redistribution.
23 * 3. Neither the names of the above-listed copyright holders nor the names
24 * of any contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
27 * Alternatively, this software may be distributed under the terms of the
28 * GNU General Public License ("GPL") version 2 as published by the Free
29 * Software Foundation.
32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42 * POSSIBILITY OF SUCH DAMAGES.
45 #include "aic79xx_osm.h"
46 #include "aic79xx_inline.h"
47 #include <scsi/scsicam.h>
49 static struct scsi_transport_template
*ahd_linux_transport_template
= NULL
;
52 * Include aiclib.c as part of our
53 * "module dependencies are hard" work around.
57 #include <linux/init.h> /* __setup */
58 #include <linux/mm.h> /* For fetching system memory size */
59 #include <linux/blkdev.h> /* For block_size() */
60 #include <linux/delay.h> /* For ssleep/msleep */
63 * Bucket size for counting good commands in between bad ones.
65 #define AHD_LINUX_ERR_THRESH 1000
68 * Set this to the delay in seconds after SCSI bus reset.
69 * Note, we honor this only for the initial bus reset.
70 * The scsi error recovery code performs its own bus settle
71 * delay handling for error recovery actions.
73 #ifdef CONFIG_AIC79XX_RESET_DELAY_MS
74 #define AIC79XX_RESET_DELAY CONFIG_AIC79XX_RESET_DELAY_MS
76 #define AIC79XX_RESET_DELAY 5000
80 * To change the default number of tagged transactions allowed per-device,
81 * add a line to the lilo.conf file like:
82 * append="aic79xx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}"
83 * which will result in the first four devices on the first two
84 * controllers being set to a tagged queue depth of 32.
86 * The tag_commands is an array of 16 to allow for wide and twin adapters.
87 * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15
91 uint16_t tag_commands
[16]; /* Allow for wide/twin adapters. */
95 * Modify this as you see fit for your system.
97 * 0 tagged queuing disabled
98 * 1 <= n <= 253 n == max tags ever dispatched.
100 * The driver will throttle the number of commands dispatched to a
101 * device if it returns queue full. For devices with a fixed maximum
102 * queue depth, the driver will eventually determine this depth and
103 * lock it in (a console message is printed to indicate that a lock
104 * has occurred). On some devices, queue full is returned for a temporary
105 * resource shortage. These devices will return queue full at varying
106 * depths. The driver will throttle back when the queue fulls occur and
107 * attempt to slowly increase the depth over time as the device recovers
108 * from the resource shortage.
110 * In this example, the first line will disable tagged queueing for all
111 * the devices on the first probed aic79xx adapter.
113 * The second line enables tagged queueing with 4 commands/LUN for IDs
114 * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
115 * driver to attempt to use up to 64 tags for ID 1.
117 * The third line is the same as the first line.
119 * The fourth line disables tagged queueing for devices 0 and 3. It
120 * enables tagged queueing for the other IDs, with 16 commands/LUN
121 * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for
122 * IDs 2, 5-7, and 9-15.
126 * NOTE: The below structure is for reference only, the actual structure
127 * to modify in order to change things is just below this comment block.
128 adapter_tag_info_t aic79xx_tag_info[] =
130 {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
131 {{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}},
132 {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
133 {{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}}
137 #ifdef CONFIG_AIC79XX_CMDS_PER_DEVICE
138 #define AIC79XX_CMDS_PER_DEVICE CONFIG_AIC79XX_CMDS_PER_DEVICE
140 #define AIC79XX_CMDS_PER_DEVICE AHD_MAX_QUEUE
143 #define AIC79XX_CONFIGED_TAG_COMMANDS { \
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, \
147 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
148 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
149 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
150 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
151 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE \
155 * By default, use the number of commands specified by
156 * the users kernel configuration.
158 static adapter_tag_info_t aic79xx_tag_info
[] =
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
},
171 {AIC79XX_CONFIGED_TAG_COMMANDS
},
172 {AIC79XX_CONFIGED_TAG_COMMANDS
},
173 {AIC79XX_CONFIGED_TAG_COMMANDS
},
174 {AIC79XX_CONFIGED_TAG_COMMANDS
},
175 {AIC79XX_CONFIGED_TAG_COMMANDS
}
179 * The I/O cell on the chip is very configurable in respect to its analog
180 * characteristics. Set the defaults here; they can be overriden with
181 * the proper insmod parameters.
183 struct ahd_linux_iocell_opts
189 #define AIC79XX_DEFAULT_PRECOMP 0xFF
190 #define AIC79XX_DEFAULT_SLEWRATE 0xFF
191 #define AIC79XX_DEFAULT_AMPLITUDE 0xFF
192 #define AIC79XX_DEFAULT_IOOPTS \
194 AIC79XX_DEFAULT_PRECOMP, \
195 AIC79XX_DEFAULT_SLEWRATE, \
196 AIC79XX_DEFAULT_AMPLITUDE \
198 #define AIC79XX_PRECOMP_INDEX 0
199 #define AIC79XX_SLEWRATE_INDEX 1
200 #define AIC79XX_AMPLITUDE_INDEX 2
201 static struct ahd_linux_iocell_opts aic79xx_iocell_info
[] =
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
,
214 AIC79XX_DEFAULT_IOOPTS
,
215 AIC79XX_DEFAULT_IOOPTS
,
216 AIC79XX_DEFAULT_IOOPTS
,
217 AIC79XX_DEFAULT_IOOPTS
,
218 AIC79XX_DEFAULT_IOOPTS
222 * There should be a specific return value for this in scsi.h, but
223 * it seems that most drivers ignore it.
225 #define DID_UNDERFLOW DID_ERROR
228 ahd_print_path(struct ahd_softc
*ahd
, struct scb
*scb
)
230 printk("(scsi%d:%c:%d:%d): ",
231 ahd
->platform_data
->host
->host_no
,
232 scb
!= NULL
? SCB_GET_CHANNEL(ahd
, scb
) : 'X',
233 scb
!= NULL
? SCB_GET_TARGET(ahd
, scb
) : -1,
234 scb
!= NULL
? SCB_GET_LUN(scb
) : -1);
238 * XXX - these options apply unilaterally to _all_ adapters
239 * cards in the system. This should be fixed. Exceptions to this
240 * rule are noted in the comments.
244 * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This
245 * has no effect on any later resets that might occur due to things like
248 static uint32_t aic79xx_no_reset
;
251 * Certain PCI motherboards will scan PCI devices from highest to lowest,
252 * others scan from lowest to highest, and they tend to do all kinds of
253 * strange things when they come into contact with PCI bridge chips. The
254 * net result of all this is that the PCI card that is actually used to boot
255 * the machine is very hard to detect. Most motherboards go from lowest
256 * PCI slot number to highest, and the first SCSI controller found is the
257 * one you boot from. The only exceptions to this are when a controller
258 * has its BIOS disabled. So, we by default sort all of our SCSI controllers
259 * from lowest PCI slot number to highest PCI slot number. We also force
260 * all controllers with their BIOS disabled to the end of the list. This
261 * works on *almost* all computers. Where it doesn't work, we have this
262 * option. Setting this option to non-0 will reverse the order of the sort
263 * to highest first, then lowest, but will still leave cards with their BIOS
264 * disabled at the very end. That should fix everyone up unless there are
265 * really strange cirumstances.
267 static uint32_t aic79xx_reverse_scan
;
270 * Should we force EXTENDED translation on a controller.
271 * 0 == Use whatever is in the SEEPROM or default to off
272 * 1 == Use whatever is in the SEEPROM or default to on
274 static uint32_t aic79xx_extended
;
277 * PCI bus parity checking of the Adaptec controllers. This is somewhat
278 * dubious at best. To my knowledge, this option has never actually
279 * solved a PCI parity problem, but on certain machines with broken PCI
280 * chipset configurations, it can generate tons of false error messages.
281 * It's included in the driver for completeness.
282 * 0 = Shut off PCI parity check
283 * non-0 = Enable PCI parity check
285 * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
286 * variable to -1 you would actually want to simply pass the variable
287 * name without a number. That will invert the 0 which will result in
290 static uint32_t aic79xx_pci_parity
= ~0;
293 * There are lots of broken chipsets in the world. Some of them will
294 * violate the PCI spec when we issue byte sized memory writes to our
295 * controller. I/O mapped register access, if allowed by the given
296 * platform, will work in almost all cases.
298 uint32_t aic79xx_allow_memio
= ~0;
301 * So that we can set how long each device is given as a selection timeout.
302 * The table of values goes like this:
307 * We default to 256ms because some older devices need a longer time
308 * to respond to initial selection.
310 static uint32_t aic79xx_seltime
;
313 * Certain devices do not perform any aging on commands. Should the
314 * device be saturated by commands in one portion of the disk, it is
315 * possible for transactions on far away sectors to never be serviced.
316 * To handle these devices, we can periodically send an ordered tag to
317 * force all outstanding transactions to be serviced prior to a new
320 uint32_t aic79xx_periodic_otag
;
323 * Module information and settable options.
325 static char *aic79xx
= NULL
;
327 MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>");
328 MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver");
329 MODULE_LICENSE("Dual BSD/GPL");
330 MODULE_VERSION(AIC79XX_DRIVER_VERSION
);
331 module_param(aic79xx
, charp
, 0444);
332 MODULE_PARM_DESC(aic79xx
,
333 "period delimited, options string.\n"
334 " verbose Enable verbose/diagnostic logging\n"
335 " allow_memio Allow device registers to be memory mapped\n"
336 " debug Bitmask of debug values to enable\n"
337 " no_reset Supress initial bus resets\n"
338 " extended Enable extended geometry on all controllers\n"
339 " periodic_otag Send an ordered tagged transaction\n"
340 " periodically to prevent tag starvation.\n"
341 " This may be required by some older disk\n"
342 " or drives/RAID arrays.\n"
343 " reverse_scan Sort PCI devices highest Bus/Slot to lowest\n"
344 " tag_info:<tag_str> Set per-target tag depth\n"
345 " global_tag_depth:<int> Global tag depth for all targets on all buses\n"
346 " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
347 " precomp:<pcomp_list> Set the signal precompensation (0-7).\n"
348 " amplitude:<int> Set the signal amplitude (0-7).\n"
349 " seltime:<int> Selection Timeout:\n"
350 " (0/256ms,1/128ms,2/64ms,3/32ms)\n"
352 " Sample /etc/modprobe.conf line:\n"
353 " Enable verbose logging\n"
354 " Set tag depth on Controller 2/Target 2 to 10 tags\n"
355 " Shorten the selection timeout to 128ms\n"
357 " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n"
360 static void ahd_linux_handle_scsi_status(struct ahd_softc
*,
361 struct scsi_device
*,
363 static void ahd_linux_queue_cmd_complete(struct ahd_softc
*ahd
,
364 struct scsi_cmnd
*cmd
);
365 static void ahd_linux_sem_timeout(u_long arg
);
366 static int ahd_linux_queue_recovery_cmd(struct scsi_cmnd
*cmd
, scb_flag flag
);
367 static void ahd_linux_initialize_scsi_bus(struct ahd_softc
*ahd
);
368 static u_int
ahd_linux_user_tagdepth(struct ahd_softc
*ahd
,
369 struct ahd_devinfo
*devinfo
);
370 static void ahd_linux_device_queue_depth(struct scsi_device
*);
371 static int ahd_linux_run_command(struct ahd_softc
*,
372 struct ahd_linux_device
*,
374 static void ahd_linux_setup_tag_info_global(char *p
);
375 static aic_option_callback_t ahd_linux_setup_tag_info
;
376 static aic_option_callback_t ahd_linux_setup_iocell_info
;
377 static int aic79xx_setup(char *c
);
379 static int ahd_linux_unit
;
382 /****************************** Inlines ***************************************/
383 static __inline
void ahd_linux_unmap_scb(struct ahd_softc
*, struct scb
*);
386 ahd_linux_unmap_scb(struct ahd_softc
*ahd
, struct scb
*scb
)
388 struct scsi_cmnd
*cmd
;
392 direction
= cmd
->sc_data_direction
;
393 ahd_sync_sglist(ahd
, scb
, BUS_DMASYNC_POSTWRITE
);
394 if (cmd
->use_sg
!= 0) {
395 struct scatterlist
*sg
;
397 sg
= (struct scatterlist
*)cmd
->request_buffer
;
398 pci_unmap_sg(ahd
->dev_softc
, sg
, cmd
->use_sg
, direction
);
399 } else if (cmd
->request_bufflen
!= 0) {
400 pci_unmap_single(ahd
->dev_softc
,
401 scb
->platform_data
->buf_busaddr
,
402 cmd
->request_bufflen
, direction
);
406 /******************************** Macros **************************************/
407 #define BUILD_SCSIID(ahd, cmd) \
408 ((((cmd)->device->id << TID_SHIFT) & TID) | (ahd)->our_id)
411 * Return a string describing the driver.
414 ahd_linux_info(struct Scsi_Host
*host
)
416 static char buffer
[512];
419 struct ahd_softc
*ahd
;
422 ahd
= *(struct ahd_softc
**)host
->hostdata
;
423 memset(bp
, 0, sizeof(buffer
));
424 strcpy(bp
, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
425 strcat(bp
, AIC79XX_DRIVER_VERSION
);
428 strcat(bp
, ahd
->description
);
431 ahd_controller_info(ahd
, ahd_info
);
432 strcat(bp
, ahd_info
);
439 * Queue an SCB to the controller.
442 ahd_linux_queue(struct scsi_cmnd
* cmd
, void (*scsi_done
) (struct scsi_cmnd
*))
444 struct ahd_softc
*ahd
;
445 struct ahd_linux_device
*dev
= scsi_transport_device_data(cmd
->device
);
447 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
450 * Close the race of a command that was in the process of
451 * being queued to us just as our simq was frozen. Let
452 * DV commands through so long as we are only frozen to
455 if (ahd
->platform_data
->qfrozen
!= 0) {
456 printf("%s: queue frozen\n", ahd_name(ahd
));
458 return SCSI_MLQUEUE_HOST_BUSY
;
462 * Save the callback on completion function.
464 cmd
->scsi_done
= scsi_done
;
466 cmd
->result
= CAM_REQ_INPROG
<< 16;
468 return ahd_linux_run_command(ahd
, dev
, cmd
);
471 static inline struct scsi_target
**
472 ahd_linux_target_in_softc(struct scsi_target
*starget
)
474 struct ahd_softc
*ahd
=
475 *((struct ahd_softc
**)dev_to_shost(&starget
->dev
)->hostdata
);
476 unsigned int target_offset
;
478 target_offset
= starget
->id
;
479 if (starget
->channel
!= 0)
482 return &ahd
->platform_data
->starget
[target_offset
];
486 ahd_linux_target_alloc(struct scsi_target
*starget
)
488 struct ahd_softc
*ahd
=
489 *((struct ahd_softc
**)dev_to_shost(&starget
->dev
)->hostdata
);
491 struct scsi_target
**ahd_targp
= ahd_linux_target_in_softc(starget
);
492 struct ahd_linux_target
*targ
= scsi_transport_target_data(starget
);
493 struct ahd_devinfo devinfo
;
494 struct ahd_initiator_tinfo
*tinfo
;
495 struct ahd_tmode_tstate
*tstate
;
496 char channel
= starget
->channel
+ 'A';
498 ahd_lock(ahd
, &flags
);
500 BUG_ON(*ahd_targp
!= NULL
);
502 *ahd_targp
= starget
;
503 memset(targ
, 0, sizeof(*targ
));
505 tinfo
= ahd_fetch_transinfo(ahd
, channel
, ahd
->our_id
,
506 starget
->id
, &tstate
);
507 ahd_compile_devinfo(&devinfo
, ahd
->our_id
, starget
->id
,
508 CAM_LUN_WILDCARD
, channel
,
510 spi_min_period(starget
) = AHD_SYNCRATE_MAX
; /* We can do U320 */
511 if ((ahd
->bugs
& AHD_PACED_NEGTABLE_BUG
) != 0)
512 spi_max_offset(starget
) = MAX_OFFSET_PACED_BUG
;
514 spi_max_offset(starget
) = MAX_OFFSET_PACED
;
515 spi_max_width(starget
) = ahd
->features
& AHD_WIDE
;
517 ahd_set_syncrate(ahd
, &devinfo
, 0, 0, 0,
518 AHD_TRANS_GOAL
, /*paused*/FALSE
);
519 ahd_set_width(ahd
, &devinfo
, MSG_EXT_WDTR_BUS_8_BIT
,
520 AHD_TRANS_GOAL
, /*paused*/FALSE
);
521 ahd_unlock(ahd
, &flags
);
527 ahd_linux_target_destroy(struct scsi_target
*starget
)
529 struct scsi_target
**ahd_targp
= ahd_linux_target_in_softc(starget
);
535 ahd_linux_slave_alloc(struct scsi_device
*sdev
)
537 struct ahd_softc
*ahd
=
538 *((struct ahd_softc
**)sdev
->host
->hostdata
);
539 struct scsi_target
*starget
= sdev
->sdev_target
;
540 struct ahd_linux_target
*targ
= scsi_transport_target_data(starget
);
541 struct ahd_linux_device
*dev
;
544 printf("%s: Slave Alloc %d\n", ahd_name(ahd
), sdev
->id
);
546 BUG_ON(targ
->sdev
[sdev
->lun
] != NULL
);
548 dev
= scsi_transport_device_data(sdev
);
549 memset(dev
, 0, sizeof(*dev
));
552 * We start out life using untagged
553 * transactions of which we allow one.
558 * Set maxtags to 0. This will be changed if we
559 * later determine that we are dealing with
560 * a tagged queuing capable device.
564 targ
->sdev
[sdev
->lun
] = sdev
;
570 ahd_linux_slave_configure(struct scsi_device
*sdev
)
572 struct ahd_softc
*ahd
;
574 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
576 printf("%s: Slave Configure %d\n", ahd_name(ahd
), sdev
->id
);
578 ahd_linux_device_queue_depth(sdev
);
580 /* Initial Domain Validation */
581 if (!spi_initial_dv(sdev
->sdev_target
))
588 ahd_linux_slave_destroy(struct scsi_device
*sdev
)
590 struct ahd_softc
*ahd
;
591 struct ahd_linux_device
*dev
= scsi_transport_device_data(sdev
);
592 struct ahd_linux_target
*targ
= scsi_transport_target_data(sdev
->sdev_target
);
594 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
596 printf("%s: Slave Destroy %d\n", ahd_name(ahd
), sdev
->id
);
600 targ
->sdev
[sdev
->lun
] = NULL
;
604 #if defined(__i386__)
606 * Return the disk geometry for the given SCSI device.
609 ahd_linux_biosparam(struct scsi_device
*sdev
, struct block_device
*bdev
,
610 sector_t capacity
, int geom
[])
618 struct ahd_softc
*ahd
;
620 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
622 bh
= scsi_bios_ptable(bdev
);
624 ret
= scsi_partsize(bh
, capacity
,
625 &geom
[2], &geom
[0], &geom
[1]);
632 cylinders
= aic_sector_div(capacity
, heads
, sectors
);
634 if (aic79xx_extended
!= 0)
637 extended
= (ahd
->flags
& AHD_EXTENDED_TRANS_A
) != 0;
638 if (extended
&& cylinders
>= 1024) {
641 cylinders
= aic_sector_div(capacity
, heads
, sectors
);
651 * Abort the current SCSI command(s).
654 ahd_linux_abort(struct scsi_cmnd
*cmd
)
658 error
= ahd_linux_queue_recovery_cmd(cmd
, SCB_ABORT
);
660 printf("aic79xx_abort returns 0x%x\n", error
);
665 * Attempt to send a target reset message to the device that timed out.
668 ahd_linux_dev_reset(struct scsi_cmnd
*cmd
)
672 error
= ahd_linux_queue_recovery_cmd(cmd
, SCB_DEVICE_RESET
);
674 printf("aic79xx_dev_reset returns 0x%x\n", error
);
679 * Reset the SCSI bus.
682 ahd_linux_bus_reset(struct scsi_cmnd
*cmd
)
684 struct ahd_softc
*ahd
;
688 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
690 if ((ahd_debug
& AHD_SHOW_RECOVERY
) != 0)
691 printf("%s: Bus reset called for cmd %p\n",
695 found
= ahd_reset_channel(ahd
, cmd
->device
->channel
+ 'A',
696 /*initiate reset*/TRUE
);
700 printf("%s: SCSI bus reset delivered. "
701 "%d SCBs aborted.\n", ahd_name(ahd
), found
);
706 struct scsi_host_template aic79xx_driver_template
= {
707 .module
= THIS_MODULE
,
709 .proc_name
= "aic79xx",
710 .proc_info
= ahd_linux_proc_info
,
711 .info
= ahd_linux_info
,
712 .queuecommand
= ahd_linux_queue
,
713 .eh_abort_handler
= ahd_linux_abort
,
714 .eh_device_reset_handler
= ahd_linux_dev_reset
,
715 .eh_bus_reset_handler
= ahd_linux_bus_reset
,
716 #if defined(__i386__)
717 .bios_param
= ahd_linux_biosparam
,
719 .can_queue
= AHD_MAX_QUEUE
,
722 .use_clustering
= ENABLE_CLUSTERING
,
723 .slave_alloc
= ahd_linux_slave_alloc
,
724 .slave_configure
= ahd_linux_slave_configure
,
725 .slave_destroy
= ahd_linux_slave_destroy
,
726 .target_alloc
= ahd_linux_target_alloc
,
727 .target_destroy
= ahd_linux_target_destroy
,
730 /******************************** Bus DMA *************************************/
732 ahd_dma_tag_create(struct ahd_softc
*ahd
, bus_dma_tag_t parent
,
733 bus_size_t alignment
, bus_size_t boundary
,
734 dma_addr_t lowaddr
, dma_addr_t highaddr
,
735 bus_dma_filter_t
*filter
, void *filterarg
,
736 bus_size_t maxsize
, int nsegments
,
737 bus_size_t maxsegsz
, int flags
, bus_dma_tag_t
*ret_tag
)
741 dmat
= malloc(sizeof(*dmat
), M_DEVBUF
, M_NOWAIT
);
746 * Linux is very simplistic about DMA memory. For now don't
747 * maintain all specification information. Once Linux supplies
748 * better facilities for doing these operations, or the
749 * needs of this particular driver change, we might need to do
752 dmat
->alignment
= alignment
;
753 dmat
->boundary
= boundary
;
754 dmat
->maxsize
= maxsize
;
760 ahd_dma_tag_destroy(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
)
762 free(dmat
, M_DEVBUF
);
766 ahd_dmamem_alloc(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, void** vaddr
,
767 int flags
, bus_dmamap_t
*mapp
)
769 *vaddr
= pci_alloc_consistent(ahd
->dev_softc
,
770 dmat
->maxsize
, mapp
);
777 ahd_dmamem_free(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
,
778 void* vaddr
, bus_dmamap_t map
)
780 pci_free_consistent(ahd
->dev_softc
, dmat
->maxsize
,
785 ahd_dmamap_load(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
,
786 void *buf
, bus_size_t buflen
, bus_dmamap_callback_t
*cb
,
787 void *cb_arg
, int flags
)
790 * Assume for now that this will only be used during
791 * initialization and not for per-transaction buffer mapping.
793 bus_dma_segment_t stack_sg
;
795 stack_sg
.ds_addr
= map
;
796 stack_sg
.ds_len
= dmat
->maxsize
;
797 cb(cb_arg
, &stack_sg
, /*nseg*/1, /*error*/0);
802 ahd_dmamap_destroy(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
)
807 ahd_dmamap_unload(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
)
813 /********************* Platform Dependent Functions ***************************/
815 * Compare "left hand" softc with "right hand" softc, returning:
816 * < 0 - lahd has a lower priority than rahd
817 * 0 - Softcs are equal
818 * > 0 - lahd has a higher priority than rahd
821 ahd_softc_comp(struct ahd_softc
*lahd
, struct ahd_softc
*rahd
)
826 * Under Linux, cards are ordered as follows:
827 * 1) PCI devices that are marked as the boot controller.
828 * 2) PCI devices with BIOS enabled sorted by bus/slot/func.
829 * 3) All remaining PCI devices sorted by bus/slot/func.
832 value
= (lahd
->flags
& AHD_BOOT_CHANNEL
)
833 - (rahd
->flags
& AHD_BOOT_CHANNEL
);
835 /* Controllers set for boot have a *higher* priority */
839 value
= (lahd
->flags
& AHD_BIOS_ENABLED
)
840 - (rahd
->flags
& AHD_BIOS_ENABLED
);
842 /* Controllers with BIOS enabled have a *higher* priority */
845 /* Still equal. Sort by bus/slot/func. */
846 if (aic79xx_reverse_scan
!= 0)
847 value
= ahd_get_pci_bus(lahd
->dev_softc
)
848 - ahd_get_pci_bus(rahd
->dev_softc
);
850 value
= ahd_get_pci_bus(rahd
->dev_softc
)
851 - ahd_get_pci_bus(lahd
->dev_softc
);
854 if (aic79xx_reverse_scan
!= 0)
855 value
= ahd_get_pci_slot(lahd
->dev_softc
)
856 - ahd_get_pci_slot(rahd
->dev_softc
);
858 value
= ahd_get_pci_slot(rahd
->dev_softc
)
859 - ahd_get_pci_slot(lahd
->dev_softc
);
863 value
= rahd
->channel
- lahd
->channel
;
868 ahd_linux_setup_iocell_info(u_long index
, int instance
, int targ
, int32_t value
)
872 && (instance
< NUM_ELEMENTS(aic79xx_iocell_info
))) {
873 uint8_t *iocell_info
;
875 iocell_info
= (uint8_t*)&aic79xx_iocell_info
[instance
];
876 iocell_info
[index
] = value
& 0xFFFF;
878 printf("iocell[%d:%ld] = %d\n", instance
, index
, value
);
883 ahd_linux_setup_tag_info_global(char *p
)
887 tags
= simple_strtoul(p
+ 1, NULL
, 0) & 0xff;
888 printf("Setting Global Tags= %d\n", tags
);
890 for (i
= 0; i
< NUM_ELEMENTS(aic79xx_tag_info
); i
++) {
891 for (j
= 0; j
< AHD_NUM_TARGETS
; j
++) {
892 aic79xx_tag_info
[i
].tag_commands
[j
] = tags
;
898 ahd_linux_setup_tag_info(u_long arg
, int instance
, int targ
, int32_t value
)
901 if ((instance
>= 0) && (targ
>= 0)
902 && (instance
< NUM_ELEMENTS(aic79xx_tag_info
))
903 && (targ
< AHD_NUM_TARGETS
)) {
904 aic79xx_tag_info
[instance
].tag_commands
[targ
] = value
& 0x1FF;
906 printf("tag_info[%d:%d] = %d\n", instance
, targ
, value
);
911 * Handle Linux boot parameters. This routine allows for assigning a value
912 * to a parameter with a ':' between the parameter and the value.
913 * ie. aic79xx=stpwlev:1,extended
916 aic79xx_setup(char *s
)
926 { "extended", &aic79xx_extended
},
927 { "no_reset", &aic79xx_no_reset
},
928 { "verbose", &aic79xx_verbose
},
929 { "allow_memio", &aic79xx_allow_memio
},
931 { "debug", &ahd_debug
},
933 { "reverse_scan", &aic79xx_reverse_scan
},
934 { "periodic_otag", &aic79xx_periodic_otag
},
935 { "pci_parity", &aic79xx_pci_parity
},
936 { "seltime", &aic79xx_seltime
},
937 { "tag_info", NULL
},
938 { "global_tag_depth", NULL
},
939 { "slewrate", NULL
},
941 { "amplitude", NULL
},
944 end
= strchr(s
, '\0');
947 * XXX ia64 gcc isn't smart enough to know that NUM_ELEMENTS
948 * will never be 0 in this case.
952 while ((p
= strsep(&s
, ",.")) != NULL
) {
955 for (i
= 0; i
< NUM_ELEMENTS(options
); i
++) {
957 n
= strlen(options
[i
].name
);
958 if (strncmp(options
[i
].name
, p
, n
) == 0)
961 if (i
== NUM_ELEMENTS(options
))
964 if (strncmp(p
, "global_tag_depth", n
) == 0) {
965 ahd_linux_setup_tag_info_global(p
+ n
);
966 } else if (strncmp(p
, "tag_info", n
) == 0) {
967 s
= aic_parse_brace_option("tag_info", p
+ n
, end
,
968 2, ahd_linux_setup_tag_info
, 0);
969 } else if (strncmp(p
, "slewrate", n
) == 0) {
970 s
= aic_parse_brace_option("slewrate",
971 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
972 AIC79XX_SLEWRATE_INDEX
);
973 } else if (strncmp(p
, "precomp", n
) == 0) {
974 s
= aic_parse_brace_option("precomp",
975 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
976 AIC79XX_PRECOMP_INDEX
);
977 } else if (strncmp(p
, "amplitude", n
) == 0) {
978 s
= aic_parse_brace_option("amplitude",
979 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
980 AIC79XX_AMPLITUDE_INDEX
);
981 } else if (p
[n
] == ':') {
982 *(options
[i
].flag
) = simple_strtoul(p
+ n
+ 1, NULL
, 0);
983 } else if (!strncmp(p
, "verbose", n
)) {
984 *(options
[i
].flag
) = 1;
986 *(options
[i
].flag
) ^= 0xFFFFFFFF;
992 __setup("aic79xx=", aic79xx_setup
);
994 uint32_t aic79xx_verbose
;
997 ahd_linux_register_host(struct ahd_softc
*ahd
, struct scsi_host_template
*template)
1000 struct Scsi_Host
*host
;
1004 template->name
= ahd
->description
;
1005 host
= scsi_host_alloc(template, sizeof(struct ahd_softc
*));
1009 *((struct ahd_softc
**)host
->hostdata
) = ahd
;
1011 scsi_assign_lock(host
, &ahd
->platform_data
->spin_lock
);
1012 ahd
->platform_data
->host
= host
;
1013 host
->can_queue
= AHD_MAX_QUEUE
;
1014 host
->cmd_per_lun
= 2;
1015 host
->sg_tablesize
= AHD_NSEG
;
1016 host
->this_id
= ahd
->our_id
;
1017 host
->irq
= ahd
->platform_data
->irq
;
1018 host
->max_id
= (ahd
->features
& AHD_WIDE
) ? 16 : 8;
1019 host
->max_lun
= AHD_NUM_LUNS
;
1020 host
->max_channel
= 0;
1021 host
->sg_tablesize
= AHD_NSEG
;
1022 ahd_set_unit(ahd
, ahd_linux_unit
++);
1023 sprintf(buf
, "scsi%d", host
->host_no
);
1024 new_name
= malloc(strlen(buf
) + 1, M_DEVBUF
, M_NOWAIT
);
1025 if (new_name
!= NULL
) {
1026 strcpy(new_name
, buf
);
1027 ahd_set_name(ahd
, new_name
);
1029 host
->unique_id
= ahd
->unit
;
1030 ahd_linux_initialize_scsi_bus(ahd
);
1031 ahd_intr_enable(ahd
, TRUE
);
1032 ahd_unlock(ahd
, &s
);
1034 host
->transportt
= ahd_linux_transport_template
;
1036 scsi_add_host(host
, &ahd
->dev_softc
->dev
); /* XXX handle failure */
1037 scsi_scan_host(host
);
1042 ahd_linux_get_memsize(void)
1047 return ((uint64_t)si
.totalram
<< PAGE_SHIFT
);
1051 * Place the SCSI bus into a known state by either resetting it,
1052 * or forcing transfer negotiations on the next command to any
1056 ahd_linux_initialize_scsi_bus(struct ahd_softc
*ahd
)
1064 if (aic79xx_no_reset
!= 0)
1065 ahd
->flags
&= ~AHD_RESET_BUS_A
;
1067 if ((ahd
->flags
& AHD_RESET_BUS_A
) != 0)
1068 ahd_reset_channel(ahd
, 'A', /*initiate_reset*/TRUE
);
1070 numtarg
= (ahd
->features
& AHD_WIDE
) ? 16 : 8;
1073 * Force negotiation to async for all targets that
1074 * will not see an initial bus reset.
1076 for (; target_id
< numtarg
; target_id
++) {
1077 struct ahd_devinfo devinfo
;
1078 struct ahd_initiator_tinfo
*tinfo
;
1079 struct ahd_tmode_tstate
*tstate
;
1081 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
1082 target_id
, &tstate
);
1083 ahd_compile_devinfo(&devinfo
, ahd
->our_id
, target_id
,
1084 CAM_LUN_WILDCARD
, 'A', ROLE_INITIATOR
);
1085 ahd_update_neg_request(ahd
, &devinfo
, tstate
,
1086 tinfo
, AHD_NEG_ALWAYS
);
1088 /* Give the bus some time to recover */
1089 if ((ahd
->flags
& AHD_RESET_BUS_A
) != 0) {
1090 ahd_freeze_simq(ahd
);
1091 init_timer(&ahd
->platform_data
->reset_timer
);
1092 ahd
->platform_data
->reset_timer
.data
= (u_long
)ahd
;
1093 ahd
->platform_data
->reset_timer
.expires
=
1094 jiffies
+ (AIC79XX_RESET_DELAY
* HZ
)/1000;
1095 ahd
->platform_data
->reset_timer
.function
=
1096 (ahd_linux_callback_t
*)ahd_release_simq
;
1097 add_timer(&ahd
->platform_data
->reset_timer
);
1102 ahd_platform_alloc(struct ahd_softc
*ahd
, void *platform_arg
)
1104 ahd
->platform_data
=
1105 malloc(sizeof(struct ahd_platform_data
), M_DEVBUF
, M_NOWAIT
);
1106 if (ahd
->platform_data
== NULL
)
1108 memset(ahd
->platform_data
, 0, sizeof(struct ahd_platform_data
));
1109 ahd
->platform_data
->irq
= AHD_LINUX_NOIRQ
;
1111 init_MUTEX_LOCKED(&ahd
->platform_data
->eh_sem
);
1112 ahd
->seltime
= (aic79xx_seltime
& 0x3) << 4;
1117 ahd_platform_free(struct ahd_softc
*ahd
)
1119 struct scsi_target
*starget
;
1122 if (ahd
->platform_data
!= NULL
) {
1123 if (ahd
->platform_data
->host
!= NULL
) {
1124 scsi_remove_host(ahd
->platform_data
->host
);
1125 scsi_host_put(ahd
->platform_data
->host
);
1128 /* destroy all of the device and target objects */
1129 for (i
= 0; i
< AHD_NUM_TARGETS
; i
++) {
1130 starget
= ahd
->platform_data
->starget
[i
];
1131 if (starget
!= NULL
) {
1132 for (j
= 0; j
< AHD_NUM_LUNS
; j
++) {
1133 struct ahd_linux_target
*targ
=
1134 scsi_transport_target_data(starget
);
1135 if (targ
->sdev
[j
] == NULL
)
1137 targ
->sdev
[j
] = NULL
;
1139 ahd
->platform_data
->starget
[i
] = NULL
;
1143 if (ahd
->platform_data
->irq
!= AHD_LINUX_NOIRQ
)
1144 free_irq(ahd
->platform_data
->irq
, ahd
);
1145 if (ahd
->tags
[0] == BUS_SPACE_PIO
1146 && ahd
->bshs
[0].ioport
!= 0)
1147 release_region(ahd
->bshs
[0].ioport
, 256);
1148 if (ahd
->tags
[1] == BUS_SPACE_PIO
1149 && ahd
->bshs
[1].ioport
!= 0)
1150 release_region(ahd
->bshs
[1].ioport
, 256);
1151 if (ahd
->tags
[0] == BUS_SPACE_MEMIO
1152 && ahd
->bshs
[0].maddr
!= NULL
) {
1153 iounmap(ahd
->bshs
[0].maddr
);
1154 release_mem_region(ahd
->platform_data
->mem_busaddr
,
1157 free(ahd
->platform_data
, M_DEVBUF
);
1162 ahd_platform_init(struct ahd_softc
*ahd
)
1165 * Lookup and commit any modified IO Cell options.
1167 if (ahd
->unit
< NUM_ELEMENTS(aic79xx_iocell_info
)) {
1168 struct ahd_linux_iocell_opts
*iocell_opts
;
1170 iocell_opts
= &aic79xx_iocell_info
[ahd
->unit
];
1171 if (iocell_opts
->precomp
!= AIC79XX_DEFAULT_PRECOMP
)
1172 AHD_SET_PRECOMP(ahd
, iocell_opts
->precomp
);
1173 if (iocell_opts
->slewrate
!= AIC79XX_DEFAULT_SLEWRATE
)
1174 AHD_SET_SLEWRATE(ahd
, iocell_opts
->slewrate
);
1175 if (iocell_opts
->amplitude
!= AIC79XX_DEFAULT_AMPLITUDE
)
1176 AHD_SET_AMPLITUDE(ahd
, iocell_opts
->amplitude
);
1182 ahd_platform_freeze_devq(struct ahd_softc
*ahd
, struct scb
*scb
)
1184 ahd_platform_abort_scbs(ahd
, SCB_GET_TARGET(ahd
, scb
),
1185 SCB_GET_CHANNEL(ahd
, scb
),
1186 SCB_GET_LUN(scb
), SCB_LIST_NULL
,
1187 ROLE_UNKNOWN
, CAM_REQUEUE_REQ
);
1191 ahd_platform_set_tags(struct ahd_softc
*ahd
, struct ahd_devinfo
*devinfo
,
1194 struct scsi_target
*starget
;
1195 struct ahd_linux_target
*targ
;
1196 struct ahd_linux_device
*dev
;
1197 struct scsi_device
*sdev
;
1201 starget
= ahd
->platform_data
->starget
[devinfo
->target
];
1202 targ
= scsi_transport_target_data(starget
);
1203 BUG_ON(targ
== NULL
);
1204 sdev
= targ
->sdev
[devinfo
->lun
];
1208 dev
= scsi_transport_device_data(sdev
);
1212 was_queuing
= dev
->flags
& (AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
);
1215 case AHD_QUEUE_NONE
:
1218 case AHD_QUEUE_BASIC
:
1219 now_queuing
= AHD_DEV_Q_BASIC
;
1221 case AHD_QUEUE_TAGGED
:
1222 now_queuing
= AHD_DEV_Q_TAGGED
;
1225 if ((dev
->flags
& AHD_DEV_FREEZE_TIL_EMPTY
) == 0
1226 && (was_queuing
!= now_queuing
)
1227 && (dev
->active
!= 0)) {
1228 dev
->flags
|= AHD_DEV_FREEZE_TIL_EMPTY
;
1232 dev
->flags
&= ~(AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
|AHD_DEV_PERIODIC_OTAG
);
1236 usertags
= ahd_linux_user_tagdepth(ahd
, devinfo
);
1239 * Start out agressively and allow our
1240 * dynamic queue depth algorithm to take
1243 dev
->maxtags
= usertags
;
1244 dev
->openings
= dev
->maxtags
- dev
->active
;
1246 if (dev
->maxtags
== 0) {
1248 * Queueing is disabled by the user.
1251 } else if (alg
== AHD_QUEUE_TAGGED
) {
1252 dev
->flags
|= AHD_DEV_Q_TAGGED
;
1253 if (aic79xx_periodic_otag
!= 0)
1254 dev
->flags
|= AHD_DEV_PERIODIC_OTAG
;
1256 dev
->flags
|= AHD_DEV_Q_BASIC
;
1258 /* We can only have one opening. */
1260 dev
->openings
= 1 - dev
->active
;
1263 switch ((dev
->flags
& (AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
))) {
1264 case AHD_DEV_Q_BASIC
:
1265 scsi_adjust_queue_depth(sdev
,
1267 dev
->openings
+ dev
->active
);
1269 case AHD_DEV_Q_TAGGED
:
1270 scsi_adjust_queue_depth(sdev
,
1272 dev
->openings
+ dev
->active
);
1276 * We allow the OS to queue 2 untagged transactions to
1277 * us at any time even though we can only execute them
1278 * serially on the controller/device. This should
1279 * remove some latency.
1281 scsi_adjust_queue_depth(sdev
,
1289 ahd_platform_abort_scbs(struct ahd_softc
*ahd
, int target
, char channel
,
1290 int lun
, u_int tag
, role_t role
, uint32_t status
)
1296 ahd_linux_user_tagdepth(struct ahd_softc
*ahd
, struct ahd_devinfo
*devinfo
)
1298 static int warned_user
;
1302 if ((ahd
->user_discenable
& devinfo
->target_mask
) != 0) {
1303 if (ahd
->unit
>= NUM_ELEMENTS(aic79xx_tag_info
)) {
1305 if (warned_user
== 0) {
1307 "aic79xx: WARNING: Insufficient tag_info instances\n"
1308 "aic79xx: for installed controllers. Using defaults\n"
1309 "aic79xx: Please update the aic79xx_tag_info array in\n"
1310 "aic79xx: the aic79xx_osm.c source file.\n");
1313 tags
= AHD_MAX_QUEUE
;
1315 adapter_tag_info_t
*tag_info
;
1317 tag_info
= &aic79xx_tag_info
[ahd
->unit
];
1318 tags
= tag_info
->tag_commands
[devinfo
->target_offset
];
1319 if (tags
> AHD_MAX_QUEUE
)
1320 tags
= AHD_MAX_QUEUE
;
1327 * Determines the queue depth for a given device.
1330 ahd_linux_device_queue_depth(struct scsi_device
*sdev
)
1332 struct ahd_devinfo devinfo
;
1334 struct ahd_softc
*ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
1336 ahd_compile_devinfo(&devinfo
,
1338 sdev
->sdev_target
->id
, sdev
->lun
,
1339 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1341 tags
= ahd_linux_user_tagdepth(ahd
, &devinfo
);
1342 if (tags
!= 0 && sdev
->tagged_supported
!= 0) {
1344 ahd_set_tags(ahd
, &devinfo
, AHD_QUEUE_TAGGED
);
1345 ahd_print_devinfo(ahd
, &devinfo
);
1346 printf("Tagged Queuing enabled. Depth %d\n", tags
);
1348 ahd_set_tags(ahd
, &devinfo
, AHD_QUEUE_NONE
);
1353 ahd_linux_run_command(struct ahd_softc
*ahd
, struct ahd_linux_device
*dev
,
1354 struct scsi_cmnd
*cmd
)
1357 struct hardware_scb
*hscb
;
1358 struct ahd_initiator_tinfo
*tinfo
;
1359 struct ahd_tmode_tstate
*tstate
;
1364 * Get an scb to use.
1366 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
1367 cmd
->device
->id
, &tstate
);
1368 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) == 0
1369 || (tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0) {
1370 col_idx
= AHD_NEVER_COL_IDX
;
1372 col_idx
= AHD_BUILD_COL_IDX(cmd
->device
->id
,
1375 if ((scb
= ahd_get_scb(ahd
, col_idx
)) == NULL
) {
1376 ahd
->flags
|= AHD_RESOURCE_SHORTAGE
;
1377 return SCSI_MLQUEUE_HOST_BUSY
;
1381 scb
->platform_data
->dev
= dev
;
1383 cmd
->host_scribble
= (char *)scb
;
1386 * Fill out basics of the HSCB.
1389 hscb
->scsiid
= BUILD_SCSIID(ahd
, cmd
);
1390 hscb
->lun
= cmd
->device
->lun
;
1391 scb
->hscb
->task_management
= 0;
1392 mask
= SCB_GET_TARGET_MASK(ahd
, scb
);
1394 if ((ahd
->user_discenable
& mask
) != 0)
1395 hscb
->control
|= DISCENB
;
1397 if ((tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0)
1398 scb
->flags
|= SCB_PACKETIZED
;
1400 if ((tstate
->auto_negotiate
& mask
) != 0) {
1401 scb
->flags
|= SCB_AUTO_NEGOTIATE
;
1402 scb
->hscb
->control
|= MK_MESSAGE
;
1405 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) != 0) {
1407 uint8_t tag_msgs
[2];
1409 msg_bytes
= scsi_populate_tag_msg(cmd
, tag_msgs
);
1410 if (msg_bytes
&& tag_msgs
[0] != MSG_SIMPLE_TASK
) {
1411 hscb
->control
|= tag_msgs
[0];
1412 if (tag_msgs
[0] == MSG_ORDERED_TASK
)
1413 dev
->commands_since_idle_or_otag
= 0;
1415 if (dev
->commands_since_idle_or_otag
== AHD_OTAG_THRESH
1416 && (dev
->flags
& AHD_DEV_Q_TAGGED
) != 0) {
1417 hscb
->control
|= MSG_ORDERED_TASK
;
1418 dev
->commands_since_idle_or_otag
= 0;
1420 hscb
->control
|= MSG_SIMPLE_TASK
;
1424 hscb
->cdb_len
= cmd
->cmd_len
;
1425 memcpy(hscb
->shared_data
.idata
.cdb
, cmd
->cmnd
, hscb
->cdb_len
);
1427 scb
->platform_data
->xfer_len
= 0;
1428 ahd_set_residual(scb
, 0);
1429 ahd_set_sense_residual(scb
, 0);
1431 if (cmd
->use_sg
!= 0) {
1433 struct scatterlist
*cur_seg
;
1437 cur_seg
= (struct scatterlist
*)cmd
->request_buffer
;
1438 dir
= cmd
->sc_data_direction
;
1439 nseg
= pci_map_sg(ahd
->dev_softc
, cur_seg
,
1441 scb
->platform_data
->xfer_len
= 0;
1442 for (sg
= scb
->sg_list
; nseg
> 0; nseg
--, cur_seg
++) {
1446 addr
= sg_dma_address(cur_seg
);
1447 len
= sg_dma_len(cur_seg
);
1448 scb
->platform_data
->xfer_len
+= len
;
1449 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
, len
,
1452 } else if (cmd
->request_bufflen
!= 0) {
1458 dir
= cmd
->sc_data_direction
;
1459 addr
= pci_map_single(ahd
->dev_softc
,
1460 cmd
->request_buffer
,
1461 cmd
->request_bufflen
, dir
);
1462 scb
->platform_data
->xfer_len
= cmd
->request_bufflen
;
1463 scb
->platform_data
->buf_busaddr
= addr
;
1464 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
,
1465 cmd
->request_bufflen
, /*last*/TRUE
);
1468 LIST_INSERT_HEAD(&ahd
->pending_scbs
, scb
, pending_links
);
1471 dev
->commands_issued
++;
1473 if ((dev
->flags
& AHD_DEV_PERIODIC_OTAG
) != 0)
1474 dev
->commands_since_idle_or_otag
++;
1475 scb
->flags
|= SCB_ACTIVE
;
1476 ahd_queue_scb(ahd
, scb
);
1482 * SCSI controller interrupt handler.
1485 ahd_linux_isr(int irq
, void *dev_id
, struct pt_regs
* regs
)
1487 struct ahd_softc
*ahd
;
1491 ahd
= (struct ahd_softc
*) dev_id
;
1492 ahd_lock(ahd
, &flags
);
1493 ours
= ahd_intr(ahd
);
1494 ahd_unlock(ahd
, &flags
);
1495 return IRQ_RETVAL(ours
);
1499 ahd_platform_flushwork(struct ahd_softc
*ahd
)
1505 ahd_send_async(struct ahd_softc
*ahd
, char channel
,
1506 u_int target
, u_int lun
, ac_code code
, void *arg
)
1509 case AC_TRANSFER_NEG
:
1512 struct scsi_target
*starget
;
1513 struct ahd_linux_target
*targ
;
1514 struct info_str info
;
1515 struct ahd_initiator_tinfo
*tinfo
;
1516 struct ahd_tmode_tstate
*tstate
;
1517 unsigned int target_ppr_options
;
1519 BUG_ON(target
== CAM_TARGET_WILDCARD
);
1522 info
.length
= sizeof(buf
);
1525 tinfo
= ahd_fetch_transinfo(ahd
, channel
, ahd
->our_id
,
1529 * Don't bother reporting results while
1530 * negotiations are still pending.
1532 if (tinfo
->curr
.period
!= tinfo
->goal
.period
1533 || tinfo
->curr
.width
!= tinfo
->goal
.width
1534 || tinfo
->curr
.offset
!= tinfo
->goal
.offset
1535 || tinfo
->curr
.ppr_options
!= tinfo
->goal
.ppr_options
)
1536 if (bootverbose
== 0)
1540 * Don't bother reporting results that
1541 * are identical to those last reported.
1543 starget
= ahd
->platform_data
->starget
[target
];
1544 if (starget
== NULL
)
1546 targ
= scsi_transport_target_data(starget
);
1548 target_ppr_options
=
1549 (spi_dt(starget
) ? MSG_EXT_PPR_DT_REQ
: 0)
1550 + (spi_qas(starget
) ? MSG_EXT_PPR_QAS_REQ
: 0)
1551 + (spi_iu(starget
) ? MSG_EXT_PPR_IU_REQ
: 0)
1552 + (spi_rd_strm(starget
) ? MSG_EXT_PPR_RD_STRM
: 0)
1553 + (spi_pcomp_en(starget
) ? MSG_EXT_PPR_PCOMP_EN
: 0)
1554 + (spi_rti(starget
) ? MSG_EXT_PPR_RTI
: 0)
1555 + (spi_wr_flow(starget
) ? MSG_EXT_PPR_WR_FLOW
: 0)
1556 + (spi_hold_mcs(starget
) ? MSG_EXT_PPR_HOLD_MCS
: 0);
1558 if (tinfo
->curr
.period
== spi_period(starget
)
1559 && tinfo
->curr
.width
== spi_width(starget
)
1560 && tinfo
->curr
.offset
== spi_offset(starget
)
1561 && tinfo
->curr
.ppr_options
== target_ppr_options
)
1562 if (bootverbose
== 0)
1565 spi_period(starget
) = tinfo
->curr
.period
;
1566 spi_width(starget
) = tinfo
->curr
.width
;
1567 spi_offset(starget
) = tinfo
->curr
.offset
;
1568 spi_dt(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_DT_REQ
? 1 : 0;
1569 spi_qas(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_QAS_REQ
? 1 : 0;
1570 spi_iu(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
? 1 : 0;
1571 spi_rd_strm(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_RD_STRM
? 1 : 0;
1572 spi_pcomp_en(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_PCOMP_EN
? 1 : 0;
1573 spi_rti(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_RTI
? 1 : 0;
1574 spi_wr_flow(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_WR_FLOW
? 1 : 0;
1575 spi_hold_mcs(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_HOLD_MCS
? 1 : 0;
1576 spi_display_xfer_agreement(starget
);
1581 WARN_ON(lun
!= CAM_LUN_WILDCARD
);
1582 scsi_report_device_reset(ahd
->platform_data
->host
,
1583 channel
- 'A', target
);
1587 if (ahd
->platform_data
->host
!= NULL
) {
1588 scsi_report_bus_reset(ahd
->platform_data
->host
,
1593 panic("ahd_send_async: Unexpected async event");
1598 * Calls the higher level scsi done function and frees the scb.
1601 ahd_done(struct ahd_softc
*ahd
, struct scb
*scb
)
1603 struct scsi_cmnd
*cmd
;
1604 struct ahd_linux_device
*dev
;
1606 if ((scb
->flags
& SCB_ACTIVE
) == 0) {
1607 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb
));
1608 ahd_dump_card_state(ahd
);
1609 panic("Stopping for safety");
1611 LIST_REMOVE(scb
, pending_links
);
1613 dev
= scb
->platform_data
->dev
;
1616 if ((cmd
->result
& (CAM_DEV_QFRZN
<< 16)) != 0) {
1617 cmd
->result
&= ~(CAM_DEV_QFRZN
<< 16);
1620 ahd_linux_unmap_scb(ahd
, scb
);
1623 * Guard against stale sense data.
1624 * The Linux mid-layer assumes that sense
1625 * was retrieved anytime the first byte of
1626 * the sense buffer looks "sane".
1628 cmd
->sense_buffer
[0] = 0;
1629 if (ahd_get_transaction_status(scb
) == CAM_REQ_INPROG
) {
1630 uint32_t amount_xferred
;
1633 ahd_get_transfer_length(scb
) - ahd_get_residual(scb
);
1634 if ((scb
->flags
& SCB_TRANSMISSION_ERROR
) != 0) {
1636 if ((ahd_debug
& AHD_SHOW_MISC
) != 0) {
1637 ahd_print_path(ahd
, scb
);
1638 printf("Set CAM_UNCOR_PARITY\n");
1641 ahd_set_transaction_status(scb
, CAM_UNCOR_PARITY
);
1642 #ifdef AHD_REPORT_UNDERFLOWS
1644 * This code is disabled by default as some
1645 * clients of the SCSI system do not properly
1646 * initialize the underflow parameter. This
1647 * results in spurious termination of commands
1648 * that complete as expected (e.g. underflow is
1649 * allowed as command can return variable amounts
1652 } else if (amount_xferred
< scb
->io_ctx
->underflow
) {
1655 ahd_print_path(ahd
, scb
);
1657 for (i
= 0; i
< scb
->io_ctx
->cmd_len
; i
++)
1658 printf(" 0x%x", scb
->io_ctx
->cmnd
[i
]);
1660 ahd_print_path(ahd
, scb
);
1661 printf("Saw underflow (%ld of %ld bytes). "
1662 "Treated as error\n",
1663 ahd_get_residual(scb
),
1664 ahd_get_transfer_length(scb
));
1665 ahd_set_transaction_status(scb
, CAM_DATA_RUN_ERR
);
1668 ahd_set_transaction_status(scb
, CAM_REQ_CMP
);
1670 } else if (ahd_get_transaction_status(scb
) == CAM_SCSI_STATUS_ERROR
) {
1671 ahd_linux_handle_scsi_status(ahd
, cmd
->device
, scb
);
1674 if (dev
->openings
== 1
1675 && ahd_get_transaction_status(scb
) == CAM_REQ_CMP
1676 && ahd_get_scsi_status(scb
) != SCSI_STATUS_QUEUE_FULL
)
1677 dev
->tag_success_count
++;
1679 * Some devices deal with temporary internal resource
1680 * shortages by returning queue full. When the queue
1681 * full occurrs, we throttle back. Slowly try to get
1682 * back to our previous queue depth.
1684 if ((dev
->openings
+ dev
->active
) < dev
->maxtags
1685 && dev
->tag_success_count
> AHD_TAG_SUCCESS_INTERVAL
) {
1686 dev
->tag_success_count
= 0;
1690 if (dev
->active
== 0)
1691 dev
->commands_since_idle_or_otag
= 0;
1693 if ((scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
1694 printf("Recovery SCB completes\n");
1695 if (ahd_get_transaction_status(scb
) == CAM_BDR_SENT
1696 || ahd_get_transaction_status(scb
) == CAM_REQ_ABORTED
)
1697 ahd_set_transaction_status(scb
, CAM_CMD_TIMEOUT
);
1698 if ((ahd
->platform_data
->flags
& AHD_SCB_UP_EH_SEM
) != 0) {
1699 ahd
->platform_data
->flags
&= ~AHD_SCB_UP_EH_SEM
;
1700 up(&ahd
->platform_data
->eh_sem
);
1704 ahd_free_scb(ahd
, scb
);
1705 ahd_linux_queue_cmd_complete(ahd
, cmd
);
1709 ahd_linux_handle_scsi_status(struct ahd_softc
*ahd
,
1710 struct scsi_device
*sdev
, struct scb
*scb
)
1712 struct ahd_devinfo devinfo
;
1713 struct ahd_linux_device
*dev
= scsi_transport_device_data(sdev
);
1715 ahd_compile_devinfo(&devinfo
,
1717 sdev
->sdev_target
->id
, sdev
->lun
,
1718 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1722 * We don't currently trust the mid-layer to
1723 * properly deal with queue full or busy. So,
1724 * when one occurs, we tell the mid-layer to
1725 * unconditionally requeue the command to us
1726 * so that we can retry it ourselves. We also
1727 * implement our own throttling mechanism so
1728 * we don't clobber the device with too many
1731 switch (ahd_get_scsi_status(scb
)) {
1734 case SCSI_STATUS_CHECK_COND
:
1735 case SCSI_STATUS_CMD_TERMINATED
:
1737 struct scsi_cmnd
*cmd
;
1740 * Copy sense information to the OS's cmd
1741 * structure if it is available.
1744 if ((scb
->flags
& (SCB_SENSE
|SCB_PKT_SENSE
)) != 0) {
1745 struct scsi_status_iu_header
*siu
;
1749 if (scb
->flags
& SCB_SENSE
) {
1750 sense_size
= MIN(sizeof(struct scsi_sense_data
)
1751 - ahd_get_sense_residual(scb
),
1752 sizeof(cmd
->sense_buffer
));
1756 * Copy only the sense data into the provided
1759 siu
= (struct scsi_status_iu_header
*)
1761 sense_size
= MIN(scsi_4btoul(siu
->sense_length
),
1762 sizeof(cmd
->sense_buffer
));
1763 sense_offset
= SIU_SENSE_OFFSET(siu
);
1766 memset(cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
1767 memcpy(cmd
->sense_buffer
,
1768 ahd_get_sense_buf(ahd
, scb
)
1769 + sense_offset
, sense_size
);
1770 cmd
->result
|= (DRIVER_SENSE
<< 24);
1773 if (ahd_debug
& AHD_SHOW_SENSE
) {
1776 printf("Copied %d bytes of sense data at %d:",
1777 sense_size
, sense_offset
);
1778 for (i
= 0; i
< sense_size
; i
++) {
1781 printf("0x%x ", cmd
->sense_buffer
[i
]);
1789 case SCSI_STATUS_QUEUE_FULL
:
1791 * By the time the core driver has returned this
1792 * command, all other commands that were queued
1793 * to us but not the device have been returned.
1794 * This ensures that dev->active is equal to
1795 * the number of commands actually queued to
1798 dev
->tag_success_count
= 0;
1799 if (dev
->active
!= 0) {
1801 * Drop our opening count to the number
1802 * of commands currently outstanding.
1806 if ((ahd_debug
& AHD_SHOW_QFULL
) != 0) {
1807 ahd_print_path(ahd
, scb
);
1808 printf("Dropping tag count to %d\n",
1812 if (dev
->active
== dev
->tags_on_last_queuefull
) {
1814 dev
->last_queuefull_same_count
++;
1816 * If we repeatedly see a queue full
1817 * at the same queue depth, this
1818 * device has a fixed number of tag
1819 * slots. Lock in this tag depth
1820 * so we stop seeing queue fulls from
1823 if (dev
->last_queuefull_same_count
1824 == AHD_LOCK_TAGS_COUNT
) {
1825 dev
->maxtags
= dev
->active
;
1826 ahd_print_path(ahd
, scb
);
1827 printf("Locking max tag count at %d\n",
1831 dev
->tags_on_last_queuefull
= dev
->active
;
1832 dev
->last_queuefull_same_count
= 0;
1834 ahd_set_transaction_status(scb
, CAM_REQUEUE_REQ
);
1835 ahd_set_scsi_status(scb
, SCSI_STATUS_OK
);
1836 ahd_platform_set_tags(ahd
, &devinfo
,
1837 (dev
->flags
& AHD_DEV_Q_BASIC
)
1838 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1842 * Drop down to a single opening, and treat this
1843 * as if the target returned BUSY SCSI status.
1846 ahd_platform_set_tags(ahd
, &devinfo
,
1847 (dev
->flags
& AHD_DEV_Q_BASIC
)
1848 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1849 ahd_set_scsi_status(scb
, SCSI_STATUS_BUSY
);
1854 ahd_linux_queue_cmd_complete(struct ahd_softc
*ahd
, struct scsi_cmnd
*cmd
)
1857 * Map CAM error codes into Linux Error codes. We
1858 * avoid the conversion so that the DV code has the
1859 * full error information available when making
1860 * state change decisions.
1866 status
= ahd_cmd_get_transaction_status(cmd
);
1868 case CAM_REQ_INPROG
:
1870 case CAM_SCSI_STATUS_ERROR
:
1871 new_status
= DID_OK
;
1873 case CAM_REQ_ABORTED
:
1874 new_status
= DID_ABORT
;
1877 new_status
= DID_BUS_BUSY
;
1879 case CAM_REQ_INVALID
:
1880 case CAM_PATH_INVALID
:
1881 new_status
= DID_BAD_TARGET
;
1883 case CAM_SEL_TIMEOUT
:
1884 new_status
= DID_NO_CONNECT
;
1886 case CAM_SCSI_BUS_RESET
:
1888 new_status
= DID_RESET
;
1890 case CAM_UNCOR_PARITY
:
1891 new_status
= DID_PARITY
;
1893 case CAM_CMD_TIMEOUT
:
1894 new_status
= DID_TIME_OUT
;
1897 case CAM_REQ_CMP_ERR
:
1898 case CAM_AUTOSENSE_FAIL
:
1900 case CAM_DATA_RUN_ERR
:
1901 case CAM_UNEXP_BUSFREE
:
1902 case CAM_SEQUENCE_FAIL
:
1903 case CAM_CCB_LEN_ERR
:
1904 case CAM_PROVIDE_FAIL
:
1905 case CAM_REQ_TERMIO
:
1906 case CAM_UNREC_HBA_ERROR
:
1907 case CAM_REQ_TOO_BIG
:
1908 new_status
= DID_ERROR
;
1910 case CAM_REQUEUE_REQ
:
1911 new_status
= DID_REQUEUE
;
1914 /* We should never get here */
1915 new_status
= DID_ERROR
;
1919 ahd_cmd_set_transaction_status(cmd
, new_status
);
1922 cmd
->scsi_done(cmd
);
1926 ahd_linux_sem_timeout(u_long arg
)
1928 struct ahd_softc
*ahd
;
1931 ahd
= (struct ahd_softc
*)arg
;
1934 if ((ahd
->platform_data
->flags
& AHD_SCB_UP_EH_SEM
) != 0) {
1935 ahd
->platform_data
->flags
&= ~AHD_SCB_UP_EH_SEM
;
1936 up(&ahd
->platform_data
->eh_sem
);
1938 ahd_unlock(ahd
, &s
);
1942 ahd_freeze_simq(struct ahd_softc
*ahd
)
1944 ahd
->platform_data
->qfrozen
++;
1945 if (ahd
->platform_data
->qfrozen
== 1) {
1946 scsi_block_requests(ahd
->platform_data
->host
);
1947 ahd_platform_abort_scbs(ahd
, CAM_TARGET_WILDCARD
, ALL_CHANNELS
,
1948 CAM_LUN_WILDCARD
, SCB_LIST_NULL
,
1949 ROLE_INITIATOR
, CAM_REQUEUE_REQ
);
1954 ahd_release_simq(struct ahd_softc
*ahd
)
1961 if (ahd
->platform_data
->qfrozen
> 0)
1962 ahd
->platform_data
->qfrozen
--;
1963 if (ahd
->platform_data
->qfrozen
== 0) {
1966 ahd_unlock(ahd
, &s
);
1968 * There is still a race here. The mid-layer
1969 * should keep its own freeze count and use
1970 * a bottom half handler to run the queues
1971 * so we can unblock with our own lock held.
1974 scsi_unblock_requests(ahd
->platform_data
->host
);
1978 ahd_linux_queue_recovery_cmd(struct scsi_cmnd
*cmd
, scb_flag flag
)
1980 struct ahd_softc
*ahd
;
1981 struct ahd_linux_device
*dev
;
1982 struct scb
*pending_scb
;
1984 u_int active_scbptr
;
1993 ahd_mode_state saved_modes
;
1998 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
2000 printf("%s:%d:%d:%d: Attempting to queue a%s message:",
2001 ahd_name(ahd
), cmd
->device
->channel
,
2002 cmd
->device
->id
, cmd
->device
->lun
,
2003 flag
== SCB_ABORT
? "n ABORT" : " TARGET RESET");
2006 for (cdb_byte
= 0; cdb_byte
< cmd
->cmd_len
; cdb_byte
++)
2007 printf(" 0x%x", cmd
->cmnd
[cdb_byte
]);
2010 spin_lock_irq(&ahd
->platform_data
->spin_lock
);
2013 * First determine if we currently own this command.
2014 * Start by searching the device queue. If not found
2015 * there, check the pending_scb list. If not found
2016 * at all, and the system wanted us to just abort the
2017 * command, return success.
2019 dev
= scsi_transport_device_data(cmd
->device
);
2023 * No target device for this command exists,
2024 * so we must not still own the command.
2026 printf("%s:%d:%d:%d: Is not an active device\n",
2027 ahd_name(ahd
), cmd
->device
->channel
, cmd
->device
->id
,
2034 * See if we can find a matching cmd in the pending list.
2036 LIST_FOREACH(pending_scb
, &ahd
->pending_scbs
, pending_links
) {
2037 if (pending_scb
->io_ctx
== cmd
)
2041 if (pending_scb
== NULL
&& flag
== SCB_DEVICE_RESET
) {
2043 /* Any SCB for this device will do for a target reset */
2044 LIST_FOREACH(pending_scb
, &ahd
->pending_scbs
, pending_links
) {
2045 if (ahd_match_scb(ahd
, pending_scb
, cmd
->device
->id
,
2046 cmd
->device
->channel
+ 'A',
2048 SCB_LIST_NULL
, ROLE_INITIATOR
) == 0)
2053 if (pending_scb
== NULL
) {
2054 printf("%s:%d:%d:%d: Command not found\n",
2055 ahd_name(ahd
), cmd
->device
->channel
, cmd
->device
->id
,
2060 if ((pending_scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
2062 * We can't queue two recovery actions using the same SCB
2069 * Ensure that the card doesn't do anything
2070 * behind our back. Also make sure that we
2071 * didn't "just" miss an interrupt that would
2074 was_paused
= ahd_is_paused(ahd
);
2075 ahd_pause_and_flushwork(ahd
);
2078 if ((pending_scb
->flags
& SCB_ACTIVE
) == 0) {
2079 printf("%s:%d:%d:%d: Command already completed\n",
2080 ahd_name(ahd
), cmd
->device
->channel
, cmd
->device
->id
,
2085 printf("%s: At time of recovery, card was %spaused\n",
2086 ahd_name(ahd
), was_paused
? "" : "not ");
2087 ahd_dump_card_state(ahd
);
2089 disconnected
= TRUE
;
2090 if (flag
== SCB_ABORT
) {
2091 if (ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2092 cmd
->device
->channel
+ 'A',
2094 pending_scb
->hscb
->tag
,
2095 ROLE_INITIATOR
, CAM_REQ_ABORTED
,
2096 SEARCH_COMPLETE
) > 0) {
2097 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
2098 ahd_name(ahd
), cmd
->device
->channel
,
2099 cmd
->device
->id
, cmd
->device
->lun
);
2103 } else if (ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2104 cmd
->device
->channel
+ 'A',
2105 cmd
->device
->lun
, pending_scb
->hscb
->tag
,
2106 ROLE_INITIATOR
, /*status*/0,
2107 SEARCH_COUNT
) > 0) {
2108 disconnected
= FALSE
;
2111 saved_modes
= ahd_save_modes(ahd
);
2112 ahd_set_modes(ahd
, AHD_MODE_SCSI
, AHD_MODE_SCSI
);
2113 last_phase
= ahd_inb(ahd
, LASTPHASE
);
2114 saved_scbptr
= ahd_get_scbptr(ahd
);
2115 active_scbptr
= saved_scbptr
;
2116 if (disconnected
&& (ahd_inb(ahd
, SEQ_FLAGS
) & NOT_IDENTIFIED
) == 0) {
2117 struct scb
*bus_scb
;
2119 bus_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2120 if (bus_scb
== pending_scb
)
2121 disconnected
= FALSE
;
2122 else if (flag
!= SCB_ABORT
2123 && ahd_inb(ahd
, SAVED_SCSIID
) == pending_scb
->hscb
->scsiid
2124 && ahd_inb(ahd
, SAVED_LUN
) == SCB_GET_LUN(pending_scb
))
2125 disconnected
= FALSE
;
2129 * At this point, pending_scb is the scb associated with the
2130 * passed in command. That command is currently active on the
2131 * bus or is in the disconnected state.
2133 saved_scsiid
= ahd_inb(ahd
, SAVED_SCSIID
);
2134 if (last_phase
!= P_BUSFREE
2135 && (SCB_GET_TAG(pending_scb
) == active_scbptr
2136 || (flag
== SCB_DEVICE_RESET
2137 && SCSIID_TARGET(ahd
, saved_scsiid
) == cmd
->device
->id
))) {
2140 * We're active on the bus, so assert ATN
2141 * and hope that the target responds.
2143 pending_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2144 pending_scb
->flags
|= SCB_RECOVERY_SCB
|flag
;
2145 ahd_outb(ahd
, MSG_OUT
, HOST_MSG
);
2146 ahd_outb(ahd
, SCSISIGO
, last_phase
|ATNO
);
2147 printf("%s:%d:%d:%d: Device is active, asserting ATN\n",
2148 ahd_name(ahd
), cmd
->device
->channel
,
2149 cmd
->device
->id
, cmd
->device
->lun
);
2151 } else if (disconnected
) {
2154 * Actually re-queue this SCB in an attempt
2155 * to select the device before it reconnects.
2157 pending_scb
->flags
|= SCB_RECOVERY_SCB
|SCB_ABORT
;
2158 ahd_set_scbptr(ahd
, SCB_GET_TAG(pending_scb
));
2159 pending_scb
->hscb
->cdb_len
= 0;
2160 pending_scb
->hscb
->task_attribute
= 0;
2161 pending_scb
->hscb
->task_management
= SIU_TASKMGMT_ABORT_TASK
;
2163 if ((pending_scb
->flags
& SCB_PACKETIZED
) != 0) {
2165 * Mark the SCB has having an outstanding
2166 * task management function. Should the command
2167 * complete normally before the task management
2168 * function can be sent, the host will be notified
2169 * to abort our requeued SCB.
2171 ahd_outb(ahd
, SCB_TASK_MANAGEMENT
,
2172 pending_scb
->hscb
->task_management
);
2175 * If non-packetized, set the MK_MESSAGE control
2176 * bit indicating that we desire to send a message.
2177 * We also set the disconnected flag since there is
2178 * no guarantee that our SCB control byte matches
2179 * the version on the card. We don't want the
2180 * sequencer to abort the command thinking an
2181 * unsolicited reselection occurred.
2183 pending_scb
->hscb
->control
|= MK_MESSAGE
|DISCONNECTED
;
2186 * The sequencer will never re-reference the
2187 * in-core SCB. To make sure we are notified
2188 * during reslection, set the MK_MESSAGE flag in
2189 * the card's copy of the SCB.
2191 ahd_outb(ahd
, SCB_CONTROL
,
2192 ahd_inb(ahd
, SCB_CONTROL
)|MK_MESSAGE
);
2196 * Clear out any entries in the QINFIFO first
2197 * so we are the next SCB for this target
2200 ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2201 cmd
->device
->channel
+ 'A', cmd
->device
->lun
,
2202 SCB_LIST_NULL
, ROLE_INITIATOR
,
2203 CAM_REQUEUE_REQ
, SEARCH_COMPLETE
);
2204 ahd_qinfifo_requeue_tail(ahd
, pending_scb
);
2205 ahd_set_scbptr(ahd
, saved_scbptr
);
2206 ahd_print_path(ahd
, pending_scb
);
2207 printf("Device is disconnected, re-queuing SCB\n");
2210 printf("%s:%d:%d:%d: Unable to deliver message\n",
2211 ahd_name(ahd
), cmd
->device
->channel
,
2212 cmd
->device
->id
, cmd
->device
->lun
);
2219 * Our assumption is that if we don't have the command, no
2220 * recovery action was required, so we return success. Again,
2221 * the semantics of the mid-layer recovery engine are not
2222 * well defined, so this may change in time.
2229 struct timer_list timer
;
2232 ahd
->platform_data
->flags
|= AHD_SCB_UP_EH_SEM
;
2233 spin_unlock_irq(&ahd
->platform_data
->spin_lock
);
2235 timer
.data
= (u_long
)ahd
;
2236 timer
.expires
= jiffies
+ (5 * HZ
);
2237 timer
.function
= ahd_linux_sem_timeout
;
2239 printf("Recovery code sleeping\n");
2240 down(&ahd
->platform_data
->eh_sem
);
2241 printf("Recovery code awake\n");
2242 ret
= del_timer_sync(&timer
);
2244 printf("Timer Expired\n");
2247 spin_lock_irq(&ahd
->platform_data
->spin_lock
);
2249 spin_unlock_irq(&ahd
->platform_data
->spin_lock
);
2253 static void ahd_linux_set_width(struct scsi_target
*starget
, int width
)
2255 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2256 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2257 struct ahd_devinfo devinfo
;
2258 unsigned long flags
;
2260 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2261 starget
->channel
+ 'A', ROLE_INITIATOR
);
2262 ahd_lock(ahd
, &flags
);
2263 ahd_set_width(ahd
, &devinfo
, width
, AHD_TRANS_GOAL
, FALSE
);
2264 ahd_unlock(ahd
, &flags
);
2267 static void ahd_linux_set_period(struct scsi_target
*starget
, int period
)
2269 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2270 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2271 struct ahd_tmode_tstate
*tstate
;
2272 struct ahd_initiator_tinfo
*tinfo
2273 = ahd_fetch_transinfo(ahd
,
2274 starget
->channel
+ 'A',
2275 shost
->this_id
, starget
->id
, &tstate
);
2276 struct ahd_devinfo devinfo
;
2277 unsigned int ppr_options
= tinfo
->goal
.ppr_options
;
2279 unsigned long flags
;
2280 unsigned long offset
= tinfo
->goal
.offset
;
2283 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2284 printf("%s: set period to %d\n", ahd_name(ahd
), period
);
2287 offset
= MAX_OFFSET
;
2292 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2294 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2297 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2299 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2300 starget
->channel
+ 'A', ROLE_INITIATOR
);
2302 /* all PPR requests apart from QAS require wide transfers */
2303 if (ppr_options
& ~MSG_EXT_PPR_QAS_REQ
) {
2304 if (spi_width(starget
) == 0)
2305 ppr_options
&= MSG_EXT_PPR_QAS_REQ
;
2308 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2309 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2311 ahd_lock(ahd
, &flags
);
2312 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
,
2313 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2314 ahd_unlock(ahd
, &flags
);
2317 static void ahd_linux_set_offset(struct scsi_target
*starget
, int offset
)
2319 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2320 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2321 struct ahd_tmode_tstate
*tstate
;
2322 struct ahd_initiator_tinfo
*tinfo
2323 = ahd_fetch_transinfo(ahd
,
2324 starget
->channel
+ 'A',
2325 shost
->this_id
, starget
->id
, &tstate
);
2326 struct ahd_devinfo devinfo
;
2327 unsigned int ppr_options
= 0;
2328 unsigned int period
= 0;
2329 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2330 unsigned long flags
;
2333 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2334 printf("%s: set offset to %d\n", ahd_name(ahd
), offset
);
2337 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2338 starget
->channel
+ 'A', ROLE_INITIATOR
);
2340 period
= tinfo
->goal
.period
;
2341 ppr_options
= tinfo
->goal
.ppr_options
;
2342 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2343 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2346 ahd_lock(ahd
, &flags
);
2347 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
, ppr_options
,
2348 AHD_TRANS_GOAL
, FALSE
);
2349 ahd_unlock(ahd
, &flags
);
2352 static void ahd_linux_set_dt(struct scsi_target
*starget
, int dt
)
2354 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2355 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2356 struct ahd_tmode_tstate
*tstate
;
2357 struct ahd_initiator_tinfo
*tinfo
2358 = ahd_fetch_transinfo(ahd
,
2359 starget
->channel
+ 'A',
2360 shost
->this_id
, starget
->id
, &tstate
);
2361 struct ahd_devinfo devinfo
;
2362 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2363 & ~MSG_EXT_PPR_DT_REQ
;
2364 unsigned int period
= tinfo
->goal
.period
;
2365 unsigned int width
= tinfo
->goal
.width
;
2366 unsigned long flags
;
2369 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2370 printf("%s: %s DT\n", ahd_name(ahd
),
2371 dt
? "enabling" : "disabling");
2374 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2376 ahd_linux_set_width(starget
, 1);
2379 period
= 10; /* If resetting DT, period must be >= 25ns */
2380 /* IU is invalid without DT set */
2381 ppr_options
&= ~MSG_EXT_PPR_IU_REQ
;
2383 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2384 starget
->channel
+ 'A', ROLE_INITIATOR
);
2385 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2386 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2388 ahd_lock(ahd
, &flags
);
2389 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2390 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2391 ahd_unlock(ahd
, &flags
);
2394 static void ahd_linux_set_qas(struct scsi_target
*starget
, int qas
)
2396 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2397 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2398 struct ahd_tmode_tstate
*tstate
;
2399 struct ahd_initiator_tinfo
*tinfo
2400 = ahd_fetch_transinfo(ahd
,
2401 starget
->channel
+ 'A',
2402 shost
->this_id
, starget
->id
, &tstate
);
2403 struct ahd_devinfo devinfo
;
2404 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2405 & ~MSG_EXT_PPR_QAS_REQ
;
2406 unsigned int period
= tinfo
->goal
.period
;
2408 unsigned long flags
;
2411 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2412 printf("%s: %s QAS\n", ahd_name(ahd
),
2413 qas
? "enabling" : "disabling");
2417 ppr_options
|= MSG_EXT_PPR_QAS_REQ
;
2420 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2422 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2423 starget
->channel
+ 'A', ROLE_INITIATOR
);
2424 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2425 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2427 ahd_lock(ahd
, &flags
);
2428 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2429 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2430 ahd_unlock(ahd
, &flags
);
2433 static void ahd_linux_set_iu(struct scsi_target
*starget
, int iu
)
2435 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2436 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2437 struct ahd_tmode_tstate
*tstate
;
2438 struct ahd_initiator_tinfo
*tinfo
2439 = ahd_fetch_transinfo(ahd
,
2440 starget
->channel
+ 'A',
2441 shost
->this_id
, starget
->id
, &tstate
);
2442 struct ahd_devinfo devinfo
;
2443 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2444 & ~MSG_EXT_PPR_IU_REQ
;
2445 unsigned int period
= tinfo
->goal
.period
;
2447 unsigned long flags
;
2450 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2451 printf("%s: %s IU\n", ahd_name(ahd
),
2452 iu
? "enabling" : "disabling");
2456 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2457 ppr_options
|= MSG_EXT_PPR_DT_REQ
; /* IU requires DT */
2460 dt
= ppr_options
& MSG_EXT_PPR_DT_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_rd_strm(struct scsi_target
*starget
, int rdstrm
)
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_RD_STRM
;
2485 unsigned int period
= tinfo
->goal
.period
;
2486 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2487 unsigned long flags
;
2490 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2491 printf("%s: %s Read Streaming\n", ahd_name(ahd
),
2492 rdstrm
? "enabling" : "disabling");
2496 ppr_options
|= MSG_EXT_PPR_RD_STRM
;
2498 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2499 starget
->channel
+ 'A', ROLE_INITIATOR
);
2500 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2501 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2503 ahd_lock(ahd
, &flags
);
2504 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2505 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2506 ahd_unlock(ahd
, &flags
);
2509 static void ahd_linux_set_wr_flow(struct scsi_target
*starget
, int wrflow
)
2511 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2512 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2513 struct ahd_tmode_tstate
*tstate
;
2514 struct ahd_initiator_tinfo
*tinfo
2515 = ahd_fetch_transinfo(ahd
,
2516 starget
->channel
+ 'A',
2517 shost
->this_id
, starget
->id
, &tstate
);
2518 struct ahd_devinfo devinfo
;
2519 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2520 & ~MSG_EXT_PPR_WR_FLOW
;
2521 unsigned int period
= tinfo
->goal
.period
;
2522 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2523 unsigned long flags
;
2526 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2527 printf("%s: %s Write Flow Control\n", ahd_name(ahd
),
2528 wrflow
? "enabling" : "disabling");
2532 ppr_options
|= MSG_EXT_PPR_WR_FLOW
;
2534 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2535 starget
->channel
+ 'A', ROLE_INITIATOR
);
2536 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2537 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2539 ahd_lock(ahd
, &flags
);
2540 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2541 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2542 ahd_unlock(ahd
, &flags
);
2545 static void ahd_linux_set_rti(struct scsi_target
*starget
, int rti
)
2547 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2548 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2549 struct ahd_tmode_tstate
*tstate
;
2550 struct ahd_initiator_tinfo
*tinfo
2551 = ahd_fetch_transinfo(ahd
,
2552 starget
->channel
+ 'A',
2553 shost
->this_id
, starget
->id
, &tstate
);
2554 struct ahd_devinfo devinfo
;
2555 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2557 unsigned int period
= tinfo
->goal
.period
;
2558 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2559 unsigned long flags
;
2561 if ((ahd
->features
& AHD_RTI
) == 0) {
2563 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2564 printf("%s: RTI not available\n", ahd_name(ahd
));
2570 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2571 printf("%s: %s RTI\n", ahd_name(ahd
),
2572 rti
? "enabling" : "disabling");
2576 ppr_options
|= MSG_EXT_PPR_RTI
;
2578 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2579 starget
->channel
+ 'A', ROLE_INITIATOR
);
2580 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2581 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2583 ahd_lock(ahd
, &flags
);
2584 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2585 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2586 ahd_unlock(ahd
, &flags
);
2589 static void ahd_linux_set_pcomp_en(struct scsi_target
*starget
, int pcomp
)
2591 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2592 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2593 struct ahd_tmode_tstate
*tstate
;
2594 struct ahd_initiator_tinfo
*tinfo
2595 = ahd_fetch_transinfo(ahd
,
2596 starget
->channel
+ 'A',
2597 shost
->this_id
, starget
->id
, &tstate
);
2598 struct ahd_devinfo devinfo
;
2599 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2600 & ~MSG_EXT_PPR_PCOMP_EN
;
2601 unsigned int period
= tinfo
->goal
.period
;
2602 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2603 unsigned long flags
;
2606 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2607 printf("%s: %s Precompensation\n", ahd_name(ahd
),
2608 pcomp
? "Enable" : "Disable");
2612 ppr_options
|= MSG_EXT_PPR_PCOMP_EN
;
2614 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2615 starget
->channel
+ 'A', ROLE_INITIATOR
);
2616 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2617 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2619 ahd_lock(ahd
, &flags
);
2620 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2621 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2622 ahd_unlock(ahd
, &flags
);
2625 static void ahd_linux_set_hold_mcs(struct scsi_target
*starget
, int hold
)
2627 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2628 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2629 struct ahd_tmode_tstate
*tstate
;
2630 struct ahd_initiator_tinfo
*tinfo
2631 = ahd_fetch_transinfo(ahd
,
2632 starget
->channel
+ 'A',
2633 shost
->this_id
, starget
->id
, &tstate
);
2634 struct ahd_devinfo devinfo
;
2635 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2636 & ~MSG_EXT_PPR_HOLD_MCS
;
2637 unsigned int period
= tinfo
->goal
.period
;
2638 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2639 unsigned long flags
;
2642 ppr_options
|= MSG_EXT_PPR_HOLD_MCS
;
2644 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2645 starget
->channel
+ 'A', ROLE_INITIATOR
);
2646 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2647 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2649 ahd_lock(ahd
, &flags
);
2650 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2651 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2652 ahd_unlock(ahd
, &flags
);
2657 static struct spi_function_template ahd_linux_transport_functions
= {
2658 .set_offset
= ahd_linux_set_offset
,
2660 .set_period
= ahd_linux_set_period
,
2662 .set_width
= ahd_linux_set_width
,
2664 .set_dt
= ahd_linux_set_dt
,
2666 .set_iu
= ahd_linux_set_iu
,
2668 .set_qas
= ahd_linux_set_qas
,
2670 .set_rd_strm
= ahd_linux_set_rd_strm
,
2672 .set_wr_flow
= ahd_linux_set_wr_flow
,
2674 .set_rti
= ahd_linux_set_rti
,
2676 .set_pcomp_en
= ahd_linux_set_pcomp_en
,
2678 .set_hold_mcs
= ahd_linux_set_hold_mcs
,
2683 ahd_linux_init(void)
2688 * If we've been passed any parameters, process them now.
2691 aic79xx_setup(aic79xx
);
2693 ahd_linux_transport_template
=
2694 spi_attach_transport(&ahd_linux_transport_functions
);
2695 if (!ahd_linux_transport_template
)
2698 scsi_transport_reserve_target(ahd_linux_transport_template
,
2699 sizeof(struct ahd_linux_target
));
2700 scsi_transport_reserve_device(ahd_linux_transport_template
,
2701 sizeof(struct ahd_linux_device
));
2703 error
= ahd_linux_pci_init();
2705 spi_release_transport(ahd_linux_transport_template
);
2710 ahd_linux_exit(void)
2712 ahd_linux_pci_exit();
2713 spi_release_transport(ahd_linux_transport_template
);
2716 module_init(ahd_linux_init
);
2717 module_exit(ahd_linux_exit
);