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
;
1471 } else if (cmd
->cmnd
[0] == INQUIRY
1472 && (tinfo
->curr
.offset
!= 0
1473 || tinfo
->curr
.width
!= MSG_EXT_WDTR_BUS_8_BIT
1474 || tinfo
->curr
.ppr_options
!= 0)
1475 && (tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
)==0) {
1477 * The SCSI spec requires inquiry
1478 * commands to complete without
1479 * reporting unit attention conditions.
1480 * Because of this, an inquiry command
1481 * that occurs just after a device is
1482 * reset will result in a data phase
1483 * with mismatched negotiated rates.
1484 * The core already forces a renegotiation
1485 * for reset events that are visible to
1486 * our controller or that we initiate,
1487 * but a third party device reset or a
1488 * hot-plug insertion can still cause this
1489 * issue. Therefore, we force a re-negotiation
1490 * for every inquiry command unless we
1493 scb
->flags
|= SCB_NEGOTIATE
;
1494 scb
->hscb
->control
|= MK_MESSAGE
;
1497 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) != 0) {
1499 uint8_t tag_msgs
[2];
1501 msg_bytes
= scsi_populate_tag_msg(cmd
, tag_msgs
);
1502 if (msg_bytes
&& tag_msgs
[0] != MSG_SIMPLE_TASK
) {
1503 hscb
->control
|= tag_msgs
[0];
1504 if (tag_msgs
[0] == MSG_ORDERED_TASK
)
1505 dev
->commands_since_idle_or_otag
= 0;
1507 if (dev
->commands_since_idle_or_otag
== AHD_OTAG_THRESH
1508 && (dev
->flags
& AHD_DEV_Q_TAGGED
) != 0) {
1509 hscb
->control
|= MSG_ORDERED_TASK
;
1510 dev
->commands_since_idle_or_otag
= 0;
1512 hscb
->control
|= MSG_SIMPLE_TASK
;
1516 hscb
->cdb_len
= cmd
->cmd_len
;
1517 memcpy(hscb
->shared_data
.idata
.cdb
, cmd
->cmnd
, hscb
->cdb_len
);
1519 scb
->platform_data
->xfer_len
= 0;
1520 ahd_set_residual(scb
, 0);
1521 ahd_set_sense_residual(scb
, 0);
1523 if (cmd
->use_sg
!= 0) {
1525 struct scatterlist
*cur_seg
;
1529 cur_seg
= (struct scatterlist
*)cmd
->request_buffer
;
1530 dir
= cmd
->sc_data_direction
;
1531 nseg
= pci_map_sg(ahd
->dev_softc
, cur_seg
,
1533 scb
->platform_data
->xfer_len
= 0;
1534 for (sg
= scb
->sg_list
; nseg
> 0; nseg
--, cur_seg
++) {
1538 addr
= sg_dma_address(cur_seg
);
1539 len
= sg_dma_len(cur_seg
);
1540 scb
->platform_data
->xfer_len
+= len
;
1541 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
, len
,
1544 } else if (cmd
->request_bufflen
!= 0) {
1550 dir
= cmd
->sc_data_direction
;
1551 addr
= pci_map_single(ahd
->dev_softc
,
1552 cmd
->request_buffer
,
1553 cmd
->request_bufflen
, dir
);
1554 scb
->platform_data
->xfer_len
= cmd
->request_bufflen
;
1555 scb
->platform_data
->buf_busaddr
= addr
;
1556 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
,
1557 cmd
->request_bufflen
, /*last*/TRUE
);
1560 LIST_INSERT_HEAD(&ahd
->pending_scbs
, scb
, pending_links
);
1563 dev
->commands_issued
++;
1565 if ((dev
->flags
& AHD_DEV_PERIODIC_OTAG
) != 0)
1566 dev
->commands_since_idle_or_otag
++;
1567 scb
->flags
|= SCB_ACTIVE
;
1568 ahd_queue_scb(ahd
, scb
);
1574 * SCSI controller interrupt handler.
1577 ahd_linux_isr(int irq
, void *dev_id
, struct pt_regs
* regs
)
1579 struct ahd_softc
*ahd
;
1583 ahd
= (struct ahd_softc
*) dev_id
;
1584 ahd_lock(ahd
, &flags
);
1585 ours
= ahd_intr(ahd
);
1586 ahd_unlock(ahd
, &flags
);
1587 return IRQ_RETVAL(ours
);
1591 ahd_platform_flushwork(struct ahd_softc
*ahd
)
1597 ahd_send_async(struct ahd_softc
*ahd
, char channel
,
1598 u_int target
, u_int lun
, ac_code code
, void *arg
)
1601 case AC_TRANSFER_NEG
:
1604 struct scsi_target
*starget
;
1605 struct ahd_linux_target
*targ
;
1606 struct info_str info
;
1607 struct ahd_initiator_tinfo
*tinfo
;
1608 struct ahd_tmode_tstate
*tstate
;
1609 unsigned int target_ppr_options
;
1611 BUG_ON(target
== CAM_TARGET_WILDCARD
);
1614 info
.length
= sizeof(buf
);
1617 tinfo
= ahd_fetch_transinfo(ahd
, channel
, ahd
->our_id
,
1621 * Don't bother reporting results while
1622 * negotiations are still pending.
1624 if (tinfo
->curr
.period
!= tinfo
->goal
.period
1625 || tinfo
->curr
.width
!= tinfo
->goal
.width
1626 || tinfo
->curr
.offset
!= tinfo
->goal
.offset
1627 || tinfo
->curr
.ppr_options
!= tinfo
->goal
.ppr_options
)
1628 if (bootverbose
== 0)
1632 * Don't bother reporting results that
1633 * are identical to those last reported.
1635 starget
= ahd
->platform_data
->starget
[target
];
1636 if (starget
== NULL
)
1638 targ
= scsi_transport_target_data(starget
);
1640 target_ppr_options
=
1641 (spi_dt(starget
) ? MSG_EXT_PPR_DT_REQ
: 0)
1642 + (spi_qas(starget
) ? MSG_EXT_PPR_QAS_REQ
: 0)
1643 + (spi_iu(starget
) ? MSG_EXT_PPR_IU_REQ
: 0)
1644 + (spi_rd_strm(starget
) ? MSG_EXT_PPR_RD_STRM
: 0)
1645 + (spi_pcomp_en(starget
) ? MSG_EXT_PPR_PCOMP_EN
: 0)
1646 + (spi_rti(starget
) ? MSG_EXT_PPR_RTI
: 0)
1647 + (spi_wr_flow(starget
) ? MSG_EXT_PPR_WR_FLOW
: 0)
1648 + (spi_hold_mcs(starget
) ? MSG_EXT_PPR_HOLD_MCS
: 0);
1650 if (tinfo
->curr
.period
== spi_period(starget
)
1651 && tinfo
->curr
.width
== spi_width(starget
)
1652 && tinfo
->curr
.offset
== spi_offset(starget
)
1653 && tinfo
->curr
.ppr_options
== target_ppr_options
)
1654 if (bootverbose
== 0)
1657 spi_period(starget
) = tinfo
->curr
.period
;
1658 spi_width(starget
) = tinfo
->curr
.width
;
1659 spi_offset(starget
) = tinfo
->curr
.offset
;
1660 spi_dt(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_DT_REQ
? 1 : 0;
1661 spi_qas(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_QAS_REQ
? 1 : 0;
1662 spi_iu(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
? 1 : 0;
1663 spi_rd_strm(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_RD_STRM
? 1 : 0;
1664 spi_pcomp_en(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_PCOMP_EN
? 1 : 0;
1665 spi_rti(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_RTI
? 1 : 0;
1666 spi_wr_flow(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_WR_FLOW
? 1 : 0;
1667 spi_hold_mcs(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_HOLD_MCS
? 1 : 0;
1668 spi_display_xfer_agreement(starget
);
1673 WARN_ON(lun
!= CAM_LUN_WILDCARD
);
1674 scsi_report_device_reset(ahd
->platform_data
->host
,
1675 channel
- 'A', target
);
1679 if (ahd
->platform_data
->host
!= NULL
) {
1680 scsi_report_bus_reset(ahd
->platform_data
->host
,
1685 panic("ahd_send_async: Unexpected async event");
1690 * Calls the higher level scsi done function and frees the scb.
1693 ahd_done(struct ahd_softc
*ahd
, struct scb
*scb
)
1695 struct scsi_cmnd
*cmd
;
1696 struct ahd_linux_device
*dev
;
1698 if ((scb
->flags
& SCB_ACTIVE
) == 0) {
1699 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb
));
1700 ahd_dump_card_state(ahd
);
1701 panic("Stopping for safety");
1703 LIST_REMOVE(scb
, pending_links
);
1705 dev
= scb
->platform_data
->dev
;
1708 if ((cmd
->result
& (CAM_DEV_QFRZN
<< 16)) != 0) {
1709 cmd
->result
&= ~(CAM_DEV_QFRZN
<< 16);
1712 ahd_linux_unmap_scb(ahd
, scb
);
1715 * Guard against stale sense data.
1716 * The Linux mid-layer assumes that sense
1717 * was retrieved anytime the first byte of
1718 * the sense buffer looks "sane".
1720 cmd
->sense_buffer
[0] = 0;
1721 if (ahd_get_transaction_status(scb
) == CAM_REQ_INPROG
) {
1722 uint32_t amount_xferred
;
1725 ahd_get_transfer_length(scb
) - ahd_get_residual(scb
);
1726 if ((scb
->flags
& SCB_TRANSMISSION_ERROR
) != 0) {
1728 if ((ahd_debug
& AHD_SHOW_MISC
) != 0) {
1729 ahd_print_path(ahd
, scb
);
1730 printf("Set CAM_UNCOR_PARITY\n");
1733 ahd_set_transaction_status(scb
, CAM_UNCOR_PARITY
);
1734 #ifdef AHD_REPORT_UNDERFLOWS
1736 * This code is disabled by default as some
1737 * clients of the SCSI system do not properly
1738 * initialize the underflow parameter. This
1739 * results in spurious termination of commands
1740 * that complete as expected (e.g. underflow is
1741 * allowed as command can return variable amounts
1744 } else if (amount_xferred
< scb
->io_ctx
->underflow
) {
1747 ahd_print_path(ahd
, scb
);
1749 for (i
= 0; i
< scb
->io_ctx
->cmd_len
; i
++)
1750 printf(" 0x%x", scb
->io_ctx
->cmnd
[i
]);
1752 ahd_print_path(ahd
, scb
);
1753 printf("Saw underflow (%ld of %ld bytes). "
1754 "Treated as error\n",
1755 ahd_get_residual(scb
),
1756 ahd_get_transfer_length(scb
));
1757 ahd_set_transaction_status(scb
, CAM_DATA_RUN_ERR
);
1760 ahd_set_transaction_status(scb
, CAM_REQ_CMP
);
1762 } else if (ahd_get_transaction_status(scb
) == CAM_SCSI_STATUS_ERROR
) {
1763 ahd_linux_handle_scsi_status(ahd
, cmd
->device
, scb
);
1766 if (dev
->openings
== 1
1767 && ahd_get_transaction_status(scb
) == CAM_REQ_CMP
1768 && ahd_get_scsi_status(scb
) != SCSI_STATUS_QUEUE_FULL
)
1769 dev
->tag_success_count
++;
1771 * Some devices deal with temporary internal resource
1772 * shortages by returning queue full. When the queue
1773 * full occurrs, we throttle back. Slowly try to get
1774 * back to our previous queue depth.
1776 if ((dev
->openings
+ dev
->active
) < dev
->maxtags
1777 && dev
->tag_success_count
> AHD_TAG_SUCCESS_INTERVAL
) {
1778 dev
->tag_success_count
= 0;
1782 if (dev
->active
== 0)
1783 dev
->commands_since_idle_or_otag
= 0;
1785 if ((scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
1786 printf("Recovery SCB completes\n");
1787 if (ahd_get_transaction_status(scb
) == CAM_BDR_SENT
1788 || ahd_get_transaction_status(scb
) == CAM_REQ_ABORTED
)
1789 ahd_set_transaction_status(scb
, CAM_CMD_TIMEOUT
);
1790 if ((ahd
->platform_data
->flags
& AHD_SCB_UP_EH_SEM
) != 0) {
1791 ahd
->platform_data
->flags
&= ~AHD_SCB_UP_EH_SEM
;
1792 up(&ahd
->platform_data
->eh_sem
);
1796 ahd_free_scb(ahd
, scb
);
1797 ahd_linux_queue_cmd_complete(ahd
, cmd
);
1801 ahd_linux_handle_scsi_status(struct ahd_softc
*ahd
,
1802 struct scsi_device
*sdev
, struct scb
*scb
)
1804 struct ahd_devinfo devinfo
;
1805 struct ahd_linux_device
*dev
= scsi_transport_device_data(sdev
);
1807 ahd_compile_devinfo(&devinfo
,
1809 sdev
->sdev_target
->id
, sdev
->lun
,
1810 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1814 * We don't currently trust the mid-layer to
1815 * properly deal with queue full or busy. So,
1816 * when one occurs, we tell the mid-layer to
1817 * unconditionally requeue the command to us
1818 * so that we can retry it ourselves. We also
1819 * implement our own throttling mechanism so
1820 * we don't clobber the device with too many
1823 switch (ahd_get_scsi_status(scb
)) {
1826 case SCSI_STATUS_CHECK_COND
:
1827 case SCSI_STATUS_CMD_TERMINATED
:
1829 struct scsi_cmnd
*cmd
;
1832 * Copy sense information to the OS's cmd
1833 * structure if it is available.
1836 if ((scb
->flags
& (SCB_SENSE
|SCB_PKT_SENSE
)) != 0) {
1837 struct scsi_status_iu_header
*siu
;
1841 if (scb
->flags
& SCB_SENSE
) {
1842 sense_size
= MIN(sizeof(struct scsi_sense_data
)
1843 - ahd_get_sense_residual(scb
),
1844 sizeof(cmd
->sense_buffer
));
1848 * Copy only the sense data into the provided
1851 siu
= (struct scsi_status_iu_header
*)
1853 sense_size
= MIN(scsi_4btoul(siu
->sense_length
),
1854 sizeof(cmd
->sense_buffer
));
1855 sense_offset
= SIU_SENSE_OFFSET(siu
);
1858 memset(cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
1859 memcpy(cmd
->sense_buffer
,
1860 ahd_get_sense_buf(ahd
, scb
)
1861 + sense_offset
, sense_size
);
1862 cmd
->result
|= (DRIVER_SENSE
<< 24);
1865 if (ahd_debug
& AHD_SHOW_SENSE
) {
1868 printf("Copied %d bytes of sense data at %d:",
1869 sense_size
, sense_offset
);
1870 for (i
= 0; i
< sense_size
; i
++) {
1873 printf("0x%x ", cmd
->sense_buffer
[i
]);
1881 case SCSI_STATUS_QUEUE_FULL
:
1883 * By the time the core driver has returned this
1884 * command, all other commands that were queued
1885 * to us but not the device have been returned.
1886 * This ensures that dev->active is equal to
1887 * the number of commands actually queued to
1890 dev
->tag_success_count
= 0;
1891 if (dev
->active
!= 0) {
1893 * Drop our opening count to the number
1894 * of commands currently outstanding.
1898 if ((ahd_debug
& AHD_SHOW_QFULL
) != 0) {
1899 ahd_print_path(ahd
, scb
);
1900 printf("Dropping tag count to %d\n",
1904 if (dev
->active
== dev
->tags_on_last_queuefull
) {
1906 dev
->last_queuefull_same_count
++;
1908 * If we repeatedly see a queue full
1909 * at the same queue depth, this
1910 * device has a fixed number of tag
1911 * slots. Lock in this tag depth
1912 * so we stop seeing queue fulls from
1915 if (dev
->last_queuefull_same_count
1916 == AHD_LOCK_TAGS_COUNT
) {
1917 dev
->maxtags
= dev
->active
;
1918 ahd_print_path(ahd
, scb
);
1919 printf("Locking max tag count at %d\n",
1923 dev
->tags_on_last_queuefull
= dev
->active
;
1924 dev
->last_queuefull_same_count
= 0;
1926 ahd_set_transaction_status(scb
, CAM_REQUEUE_REQ
);
1927 ahd_set_scsi_status(scb
, SCSI_STATUS_OK
);
1928 ahd_platform_set_tags(ahd
, &devinfo
,
1929 (dev
->flags
& AHD_DEV_Q_BASIC
)
1930 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1934 * Drop down to a single opening, and treat this
1935 * as if the target returned BUSY SCSI status.
1938 ahd_platform_set_tags(ahd
, &devinfo
,
1939 (dev
->flags
& AHD_DEV_Q_BASIC
)
1940 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1941 ahd_set_scsi_status(scb
, SCSI_STATUS_BUSY
);
1946 ahd_linux_queue_cmd_complete(struct ahd_softc
*ahd
, struct scsi_cmnd
*cmd
)
1949 * Map CAM error codes into Linux Error codes. We
1950 * avoid the conversion so that the DV code has the
1951 * full error information available when making
1952 * state change decisions.
1958 status
= ahd_cmd_get_transaction_status(cmd
);
1960 case CAM_REQ_INPROG
:
1962 case CAM_SCSI_STATUS_ERROR
:
1963 new_status
= DID_OK
;
1965 case CAM_REQ_ABORTED
:
1966 new_status
= DID_ABORT
;
1969 new_status
= DID_BUS_BUSY
;
1971 case CAM_REQ_INVALID
:
1972 case CAM_PATH_INVALID
:
1973 new_status
= DID_BAD_TARGET
;
1975 case CAM_SEL_TIMEOUT
:
1976 new_status
= DID_NO_CONNECT
;
1978 case CAM_SCSI_BUS_RESET
:
1980 new_status
= DID_RESET
;
1982 case CAM_UNCOR_PARITY
:
1983 new_status
= DID_PARITY
;
1985 case CAM_CMD_TIMEOUT
:
1986 new_status
= DID_TIME_OUT
;
1989 case CAM_REQ_CMP_ERR
:
1990 case CAM_AUTOSENSE_FAIL
:
1992 case CAM_DATA_RUN_ERR
:
1993 case CAM_UNEXP_BUSFREE
:
1994 case CAM_SEQUENCE_FAIL
:
1995 case CAM_CCB_LEN_ERR
:
1996 case CAM_PROVIDE_FAIL
:
1997 case CAM_REQ_TERMIO
:
1998 case CAM_UNREC_HBA_ERROR
:
1999 case CAM_REQ_TOO_BIG
:
2000 new_status
= DID_ERROR
;
2002 case CAM_REQUEUE_REQ
:
2003 new_status
= DID_REQUEUE
;
2006 /* We should never get here */
2007 new_status
= DID_ERROR
;
2011 ahd_cmd_set_transaction_status(cmd
, new_status
);
2014 cmd
->scsi_done(cmd
);
2018 ahd_linux_sem_timeout(u_long arg
)
2020 struct ahd_softc
*ahd
;
2023 ahd
= (struct ahd_softc
*)arg
;
2026 if ((ahd
->platform_data
->flags
& AHD_SCB_UP_EH_SEM
) != 0) {
2027 ahd
->platform_data
->flags
&= ~AHD_SCB_UP_EH_SEM
;
2028 up(&ahd
->platform_data
->eh_sem
);
2030 ahd_unlock(ahd
, &s
);
2034 ahd_freeze_simq(struct ahd_softc
*ahd
)
2036 ahd
->platform_data
->qfrozen
++;
2037 if (ahd
->platform_data
->qfrozen
== 1) {
2038 scsi_block_requests(ahd
->platform_data
->host
);
2039 ahd_platform_abort_scbs(ahd
, CAM_TARGET_WILDCARD
, ALL_CHANNELS
,
2040 CAM_LUN_WILDCARD
, SCB_LIST_NULL
,
2041 ROLE_INITIATOR
, CAM_REQUEUE_REQ
);
2046 ahd_release_simq(struct ahd_softc
*ahd
)
2053 if (ahd
->platform_data
->qfrozen
> 0)
2054 ahd
->platform_data
->qfrozen
--;
2055 if (ahd
->platform_data
->qfrozen
== 0) {
2058 ahd_unlock(ahd
, &s
);
2060 * There is still a race here. The mid-layer
2061 * should keep its own freeze count and use
2062 * a bottom half handler to run the queues
2063 * so we can unblock with our own lock held.
2066 scsi_unblock_requests(ahd
->platform_data
->host
);
2070 ahd_linux_queue_recovery_cmd(struct scsi_cmnd
*cmd
, scb_flag flag
)
2072 struct ahd_softc
*ahd
;
2073 struct ahd_linux_device
*dev
;
2074 struct scb
*pending_scb
;
2076 u_int active_scbptr
;
2086 ahd_mode_state saved_modes
;
2087 unsigned long flags
;
2092 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
2094 scmd_printk(KERN_INFO
, cmd
,
2095 "Attempting to queue a%s message:",
2096 flag
== SCB_ABORT
? "n ABORT" : " TARGET RESET");
2099 for (cdb_byte
= 0; cdb_byte
< cmd
->cmd_len
; cdb_byte
++)
2100 printf(" 0x%x", cmd
->cmnd
[cdb_byte
]);
2103 ahd_lock(ahd
, &flags
);
2106 * First determine if we currently own this command.
2107 * Start by searching the device queue. If not found
2108 * there, check the pending_scb list. If not found
2109 * at all, and the system wanted us to just abort the
2110 * command, return success.
2112 dev
= scsi_transport_device_data(cmd
->device
);
2116 * No target device for this command exists,
2117 * so we must not still own the command.
2119 scmd_printk(KERN_INFO
, cmd
, "Is not an active device\n");
2125 * See if we can find a matching cmd in the pending list.
2127 LIST_FOREACH(pending_scb
, &ahd
->pending_scbs
, pending_links
) {
2128 if (pending_scb
->io_ctx
== cmd
)
2132 if (pending_scb
== NULL
&& flag
== SCB_DEVICE_RESET
) {
2134 /* Any SCB for this device will do for a target reset */
2135 LIST_FOREACH(pending_scb
, &ahd
->pending_scbs
, pending_links
) {
2136 if (ahd_match_scb(ahd
, pending_scb
,
2138 scmd_channel(cmd
) + 'A',
2140 SCB_LIST_NULL
, ROLE_INITIATOR
))
2145 if (pending_scb
== NULL
) {
2146 scmd_printk(KERN_INFO
, cmd
, "Command not found\n");
2150 if ((pending_scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
2152 * We can't queue two recovery actions using the same SCB
2159 * Ensure that the card doesn't do anything
2160 * behind our back. Also make sure that we
2161 * didn't "just" miss an interrupt that would
2164 was_paused
= ahd_is_paused(ahd
);
2165 ahd_pause_and_flushwork(ahd
);
2168 if ((pending_scb
->flags
& SCB_ACTIVE
) == 0) {
2169 scmd_printk(KERN_INFO
, cmd
, "Command already completed\n");
2173 printf("%s: At time of recovery, card was %spaused\n",
2174 ahd_name(ahd
), was_paused
? "" : "not ");
2175 ahd_dump_card_state(ahd
);
2177 disconnected
= TRUE
;
2178 if (flag
== SCB_ABORT
) {
2179 if (ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2180 cmd
->device
->channel
+ 'A',
2182 pending_scb
->hscb
->tag
,
2183 ROLE_INITIATOR
, CAM_REQ_ABORTED
,
2184 SEARCH_COMPLETE
) > 0) {
2185 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
2186 ahd_name(ahd
), cmd
->device
->channel
,
2187 cmd
->device
->id
, cmd
->device
->lun
);
2191 } else if (ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2192 cmd
->device
->channel
+ 'A',
2193 cmd
->device
->lun
, pending_scb
->hscb
->tag
,
2194 ROLE_INITIATOR
, /*status*/0,
2195 SEARCH_COUNT
) > 0) {
2196 disconnected
= FALSE
;
2199 saved_modes
= ahd_save_modes(ahd
);
2200 ahd_set_modes(ahd
, AHD_MODE_SCSI
, AHD_MODE_SCSI
);
2201 last_phase
= ahd_inb(ahd
, LASTPHASE
);
2202 saved_scbptr
= ahd_get_scbptr(ahd
);
2203 active_scbptr
= saved_scbptr
;
2204 if (disconnected
&& ((last_phase
!= P_BUSFREE
) ||
2205 (ahd_inb(ahd
, SEQ_FLAGS
) & NOT_IDENTIFIED
) == 0)) {
2206 struct scb
*bus_scb
;
2208 bus_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2209 if (bus_scb
== pending_scb
)
2210 disconnected
= FALSE
;
2211 else if (flag
!= SCB_ABORT
2212 && ahd_inb(ahd
, SAVED_SCSIID
) == pending_scb
->hscb
->scsiid
2213 && ahd_inb(ahd
, SAVED_LUN
) == SCB_GET_LUN(pending_scb
))
2214 disconnected
= FALSE
;
2218 * At this point, pending_scb is the scb associated with the
2219 * passed in command. That command is currently active on the
2220 * bus or is in the disconnected state.
2222 saved_scsiid
= ahd_inb(ahd
, SAVED_SCSIID
);
2223 if (SCB_GET_TAG(pending_scb
) == active_scbptr
2224 || (flag
== SCB_DEVICE_RESET
2225 && SCSIID_TARGET(ahd
, saved_scsiid
) == scmd_id(cmd
))) {
2228 * We're active on the bus, so assert ATN
2229 * and hope that the target responds.
2231 pending_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2232 pending_scb
->flags
|= SCB_RECOVERY_SCB
|SCB_DEVICE_RESET
;
2233 ahd_outb(ahd
, MSG_OUT
, HOST_MSG
);
2234 ahd_outb(ahd
, SCSISIGO
, last_phase
|ATNO
);
2235 scmd_printk(KERN_INFO
, cmd
, "BDR message in message buffer\n");
2237 } else if (last_phase
!= P_BUSFREE
2238 && ahd_inb(ahd
, SCSIPHASE
) == 0) {
2240 * SCB is not identified, there
2241 * is no pending REQ, and the sequencer
2242 * has not seen a busfree. Looks like
2243 * a stuck connection waiting to
2244 * go busfree. Reset the bus.
2246 found
= ahd_reset_channel(ahd
, cmd
->device
->channel
+ 'A',
2247 /*Initiate Reset*/TRUE
);
2248 printf("%s: Issued Channel %c Bus Reset. "
2249 "%d SCBs aborted\n", ahd_name(ahd
),
2250 cmd
->device
->channel
+ 'A', found
);
2251 } else if (disconnected
) {
2254 * Actually re-queue this SCB in an attempt
2255 * to select the device before it reconnects.
2257 pending_scb
->flags
|= SCB_RECOVERY_SCB
|flag
;
2258 ahd_set_scbptr(ahd
, SCB_GET_TAG(pending_scb
));
2259 pending_scb
->hscb
->cdb_len
= 0;
2260 pending_scb
->hscb
->task_attribute
= 0;
2261 pending_scb
->hscb
->task_management
= SIU_TASKMGMT_ABORT_TASK
;
2263 if ((pending_scb
->flags
& SCB_PACKETIZED
) != 0) {
2265 * Mark the SCB has having an outstanding
2266 * task management function. Should the command
2267 * complete normally before the task management
2268 * function can be sent, the host will be notified
2269 * to abort our requeued SCB.
2271 ahd_outb(ahd
, SCB_TASK_MANAGEMENT
,
2272 pending_scb
->hscb
->task_management
);
2275 * If non-packetized, set the MK_MESSAGE control
2276 * bit indicating that we desire to send a message.
2277 * We also set the disconnected flag since there is
2278 * no guarantee that our SCB control byte matches
2279 * the version on the card. We don't want the
2280 * sequencer to abort the command thinking an
2281 * unsolicited reselection occurred.
2283 pending_scb
->hscb
->control
|= MK_MESSAGE
|DISCONNECTED
;
2286 * The sequencer will never re-reference the
2287 * in-core SCB. To make sure we are notified
2288 * during reslection, set the MK_MESSAGE flag in
2289 * the card's copy of the SCB.
2291 ahd_outb(ahd
, SCB_CONTROL
,
2292 ahd_inb(ahd
, SCB_CONTROL
)|MK_MESSAGE
);
2296 * Clear out any entries in the QINFIFO first
2297 * so we are the next SCB for this target
2300 ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2301 cmd
->device
->channel
+ 'A', cmd
->device
->lun
,
2302 SCB_LIST_NULL
, ROLE_INITIATOR
,
2303 CAM_REQUEUE_REQ
, SEARCH_COMPLETE
);
2304 ahd_qinfifo_requeue_tail(ahd
, pending_scb
);
2305 ahd_set_scbptr(ahd
, saved_scbptr
);
2306 ahd_print_path(ahd
, pending_scb
);
2307 printf("Device is disconnected, re-queuing SCB\n");
2310 scmd_printk(KERN_INFO
, cmd
, "Unable to deliver message\n");
2317 * Our assumption is that if we don't have the command, no
2318 * recovery action was required, so we return success. Again,
2319 * the semantics of the mid-layer recovery engine are not
2320 * well defined, so this may change in time.
2327 struct timer_list timer
;
2330 ahd
->platform_data
->flags
|= AHD_SCB_UP_EH_SEM
;
2331 ahd_unlock(ahd
, &flags
);
2334 timer
.data
= (u_long
)ahd
;
2335 timer
.expires
= jiffies
+ (5 * HZ
);
2336 timer
.function
= ahd_linux_sem_timeout
;
2338 printf("%s: Recovery code sleeping\n", ahd_name(ahd
));
2339 down(&ahd
->platform_data
->eh_sem
);
2340 printf("%s: Recovery code awake\n", ahd_name(ahd
));
2341 ret
= del_timer_sync(&timer
);
2343 printf("%s: Timer Expired (active %d)\n",
2344 ahd_name(ahd
), dev
->active
);
2348 ahd_unlock(ahd
, &flags
);
2352 static void ahd_linux_set_width(struct scsi_target
*starget
, int width
)
2354 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2355 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2356 struct ahd_devinfo devinfo
;
2357 unsigned long flags
;
2359 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2360 starget
->channel
+ 'A', ROLE_INITIATOR
);
2361 ahd_lock(ahd
, &flags
);
2362 ahd_set_width(ahd
, &devinfo
, width
, AHD_TRANS_GOAL
, FALSE
);
2363 ahd_unlock(ahd
, &flags
);
2366 static void ahd_linux_set_period(struct scsi_target
*starget
, int period
)
2368 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2369 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2370 struct ahd_tmode_tstate
*tstate
;
2371 struct ahd_initiator_tinfo
*tinfo
2372 = ahd_fetch_transinfo(ahd
,
2373 starget
->channel
+ 'A',
2374 shost
->this_id
, starget
->id
, &tstate
);
2375 struct ahd_devinfo devinfo
;
2376 unsigned int ppr_options
= tinfo
->goal
.ppr_options
;
2378 unsigned long flags
;
2379 unsigned long offset
= tinfo
->goal
.offset
;
2382 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2383 printf("%s: set period to %d\n", ahd_name(ahd
), period
);
2386 offset
= MAX_OFFSET
;
2391 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2393 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2396 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2398 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2399 starget
->channel
+ 'A', ROLE_INITIATOR
);
2401 /* all PPR requests apart from QAS require wide transfers */
2402 if (ppr_options
& ~MSG_EXT_PPR_QAS_REQ
) {
2403 if (spi_width(starget
) == 0)
2404 ppr_options
&= MSG_EXT_PPR_QAS_REQ
;
2407 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2408 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2410 ahd_lock(ahd
, &flags
);
2411 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
,
2412 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2413 ahd_unlock(ahd
, &flags
);
2416 static void ahd_linux_set_offset(struct scsi_target
*starget
, int offset
)
2418 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2419 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2420 struct ahd_tmode_tstate
*tstate
;
2421 struct ahd_initiator_tinfo
*tinfo
2422 = ahd_fetch_transinfo(ahd
,
2423 starget
->channel
+ 'A',
2424 shost
->this_id
, starget
->id
, &tstate
);
2425 struct ahd_devinfo devinfo
;
2426 unsigned int ppr_options
= 0;
2427 unsigned int period
= 0;
2428 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2429 unsigned long flags
;
2432 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2433 printf("%s: set offset to %d\n", ahd_name(ahd
), offset
);
2436 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2437 starget
->channel
+ 'A', ROLE_INITIATOR
);
2439 period
= tinfo
->goal
.period
;
2440 ppr_options
= tinfo
->goal
.ppr_options
;
2441 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2442 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2445 ahd_lock(ahd
, &flags
);
2446 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
, ppr_options
,
2447 AHD_TRANS_GOAL
, FALSE
);
2448 ahd_unlock(ahd
, &flags
);
2451 static void ahd_linux_set_dt(struct scsi_target
*starget
, int dt
)
2453 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2454 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2455 struct ahd_tmode_tstate
*tstate
;
2456 struct ahd_initiator_tinfo
*tinfo
2457 = ahd_fetch_transinfo(ahd
,
2458 starget
->channel
+ 'A',
2459 shost
->this_id
, starget
->id
, &tstate
);
2460 struct ahd_devinfo devinfo
;
2461 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2462 & ~MSG_EXT_PPR_DT_REQ
;
2463 unsigned int period
= tinfo
->goal
.period
;
2464 unsigned int width
= tinfo
->goal
.width
;
2465 unsigned long flags
;
2468 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2469 printf("%s: %s DT\n", ahd_name(ahd
),
2470 dt
? "enabling" : "disabling");
2473 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2475 ahd_linux_set_width(starget
, 1);
2478 period
= 10; /* If resetting DT, period must be >= 25ns */
2479 /* IU is invalid without DT set */
2480 ppr_options
&= ~MSG_EXT_PPR_IU_REQ
;
2482 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2483 starget
->channel
+ 'A', ROLE_INITIATOR
);
2484 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2485 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2487 ahd_lock(ahd
, &flags
);
2488 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2489 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2490 ahd_unlock(ahd
, &flags
);
2493 static void ahd_linux_set_qas(struct scsi_target
*starget
, int qas
)
2495 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2496 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2497 struct ahd_tmode_tstate
*tstate
;
2498 struct ahd_initiator_tinfo
*tinfo
2499 = ahd_fetch_transinfo(ahd
,
2500 starget
->channel
+ 'A',
2501 shost
->this_id
, starget
->id
, &tstate
);
2502 struct ahd_devinfo devinfo
;
2503 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2504 & ~MSG_EXT_PPR_QAS_REQ
;
2505 unsigned int period
= tinfo
->goal
.period
;
2507 unsigned long flags
;
2510 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2511 printf("%s: %s QAS\n", ahd_name(ahd
),
2512 qas
? "enabling" : "disabling");
2516 ppr_options
|= MSG_EXT_PPR_QAS_REQ
;
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_iu(struct scsi_target
*starget
, int iu
)
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_IU_REQ
;
2544 unsigned int period
= tinfo
->goal
.period
;
2546 unsigned long flags
;
2549 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2550 printf("%s: %s IU\n", ahd_name(ahd
),
2551 iu
? "enabling" : "disabling");
2555 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2556 ppr_options
|= MSG_EXT_PPR_DT_REQ
; /* IU requires DT */
2559 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2561 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2562 starget
->channel
+ 'A', ROLE_INITIATOR
);
2563 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2564 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2566 ahd_lock(ahd
, &flags
);
2567 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2568 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2569 ahd_unlock(ahd
, &flags
);
2572 static void ahd_linux_set_rd_strm(struct scsi_target
*starget
, int rdstrm
)
2574 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2575 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2576 struct ahd_tmode_tstate
*tstate
;
2577 struct ahd_initiator_tinfo
*tinfo
2578 = ahd_fetch_transinfo(ahd
,
2579 starget
->channel
+ 'A',
2580 shost
->this_id
, starget
->id
, &tstate
);
2581 struct ahd_devinfo devinfo
;
2582 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2583 & ~MSG_EXT_PPR_RD_STRM
;
2584 unsigned int period
= tinfo
->goal
.period
;
2585 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2586 unsigned long flags
;
2589 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2590 printf("%s: %s Read Streaming\n", ahd_name(ahd
),
2591 rdstrm
? "enabling" : "disabling");
2595 ppr_options
|= MSG_EXT_PPR_RD_STRM
;
2597 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2598 starget
->channel
+ 'A', ROLE_INITIATOR
);
2599 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2600 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2602 ahd_lock(ahd
, &flags
);
2603 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2604 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2605 ahd_unlock(ahd
, &flags
);
2608 static void ahd_linux_set_wr_flow(struct scsi_target
*starget
, int wrflow
)
2610 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2611 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2612 struct ahd_tmode_tstate
*tstate
;
2613 struct ahd_initiator_tinfo
*tinfo
2614 = ahd_fetch_transinfo(ahd
,
2615 starget
->channel
+ 'A',
2616 shost
->this_id
, starget
->id
, &tstate
);
2617 struct ahd_devinfo devinfo
;
2618 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2619 & ~MSG_EXT_PPR_WR_FLOW
;
2620 unsigned int period
= tinfo
->goal
.period
;
2621 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2622 unsigned long flags
;
2625 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2626 printf("%s: %s Write Flow Control\n", ahd_name(ahd
),
2627 wrflow
? "enabling" : "disabling");
2631 ppr_options
|= MSG_EXT_PPR_WR_FLOW
;
2633 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2634 starget
->channel
+ 'A', ROLE_INITIATOR
);
2635 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2636 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2638 ahd_lock(ahd
, &flags
);
2639 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2640 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2641 ahd_unlock(ahd
, &flags
);
2644 static void ahd_linux_set_rti(struct scsi_target
*starget
, int rti
)
2646 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2647 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2648 struct ahd_tmode_tstate
*tstate
;
2649 struct ahd_initiator_tinfo
*tinfo
2650 = ahd_fetch_transinfo(ahd
,
2651 starget
->channel
+ 'A',
2652 shost
->this_id
, starget
->id
, &tstate
);
2653 struct ahd_devinfo devinfo
;
2654 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2656 unsigned int period
= tinfo
->goal
.period
;
2657 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2658 unsigned long flags
;
2660 if ((ahd
->features
& AHD_RTI
) == 0) {
2662 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2663 printf("%s: RTI not available\n", ahd_name(ahd
));
2669 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2670 printf("%s: %s RTI\n", ahd_name(ahd
),
2671 rti
? "enabling" : "disabling");
2675 ppr_options
|= MSG_EXT_PPR_RTI
;
2677 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2678 starget
->channel
+ 'A', ROLE_INITIATOR
);
2679 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2680 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2682 ahd_lock(ahd
, &flags
);
2683 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2684 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2685 ahd_unlock(ahd
, &flags
);
2688 static void ahd_linux_set_pcomp_en(struct scsi_target
*starget
, int pcomp
)
2690 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2691 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2692 struct ahd_tmode_tstate
*tstate
;
2693 struct ahd_initiator_tinfo
*tinfo
2694 = ahd_fetch_transinfo(ahd
,
2695 starget
->channel
+ 'A',
2696 shost
->this_id
, starget
->id
, &tstate
);
2697 struct ahd_devinfo devinfo
;
2698 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2699 & ~MSG_EXT_PPR_PCOMP_EN
;
2700 unsigned int period
= tinfo
->goal
.period
;
2701 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2702 unsigned long flags
;
2705 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2706 printf("%s: %s Precompensation\n", ahd_name(ahd
),
2707 pcomp
? "Enable" : "Disable");
2711 ppr_options
|= MSG_EXT_PPR_PCOMP_EN
;
2713 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2714 starget
->channel
+ 'A', ROLE_INITIATOR
);
2715 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2716 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2718 ahd_lock(ahd
, &flags
);
2719 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2720 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2721 ahd_unlock(ahd
, &flags
);
2724 static void ahd_linux_set_hold_mcs(struct scsi_target
*starget
, int hold
)
2726 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2727 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2728 struct ahd_tmode_tstate
*tstate
;
2729 struct ahd_initiator_tinfo
*tinfo
2730 = ahd_fetch_transinfo(ahd
,
2731 starget
->channel
+ 'A',
2732 shost
->this_id
, starget
->id
, &tstate
);
2733 struct ahd_devinfo devinfo
;
2734 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2735 & ~MSG_EXT_PPR_HOLD_MCS
;
2736 unsigned int period
= tinfo
->goal
.period
;
2737 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2738 unsigned long flags
;
2741 ppr_options
|= MSG_EXT_PPR_HOLD_MCS
;
2743 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2744 starget
->channel
+ 'A', ROLE_INITIATOR
);
2745 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2746 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2748 ahd_lock(ahd
, &flags
);
2749 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2750 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2751 ahd_unlock(ahd
, &flags
);
2756 static struct spi_function_template ahd_linux_transport_functions
= {
2757 .set_offset
= ahd_linux_set_offset
,
2759 .set_period
= ahd_linux_set_period
,
2761 .set_width
= ahd_linux_set_width
,
2763 .set_dt
= ahd_linux_set_dt
,
2765 .set_iu
= ahd_linux_set_iu
,
2767 .set_qas
= ahd_linux_set_qas
,
2769 .set_rd_strm
= ahd_linux_set_rd_strm
,
2771 .set_wr_flow
= ahd_linux_set_wr_flow
,
2773 .set_rti
= ahd_linux_set_rti
,
2775 .set_pcomp_en
= ahd_linux_set_pcomp_en
,
2777 .set_hold_mcs
= ahd_linux_set_hold_mcs
,
2782 ahd_linux_init(void)
2787 * If we've been passed any parameters, process them now.
2790 aic79xx_setup(aic79xx
);
2792 ahd_linux_transport_template
=
2793 spi_attach_transport(&ahd_linux_transport_functions
);
2794 if (!ahd_linux_transport_template
)
2797 scsi_transport_reserve_target(ahd_linux_transport_template
,
2798 sizeof(struct ahd_linux_target
));
2799 scsi_transport_reserve_device(ahd_linux_transport_template
,
2800 sizeof(struct ahd_linux_device
));
2802 error
= ahd_linux_pci_init();
2804 spi_release_transport(ahd_linux_transport_template
);
2809 ahd_linux_exit(void)
2811 ahd_linux_pci_exit();
2812 spi_release_transport(ahd_linux_transport_template
);
2815 module_init(ahd_linux_init
);
2816 module_exit(ahd_linux_exit
);