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 * Should we force EXTENDED translation on a controller.
247 * 0 == Use whatever is in the SEEPROM or default to off
248 * 1 == Use whatever is in the SEEPROM or default to on
250 static uint32_t aic79xx_extended
;
253 * PCI bus parity checking of the Adaptec controllers. This is somewhat
254 * dubious at best. To my knowledge, this option has never actually
255 * solved a PCI parity problem, but on certain machines with broken PCI
256 * chipset configurations, it can generate tons of false error messages.
257 * It's included in the driver for completeness.
258 * 0 = Shut off PCI parity check
259 * non-0 = Enable PCI parity check
261 * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
262 * variable to -1 you would actually want to simply pass the variable
263 * name without a number. That will invert the 0 which will result in
266 static uint32_t aic79xx_pci_parity
= ~0;
269 * There are lots of broken chipsets in the world. Some of them will
270 * violate the PCI spec when we issue byte sized memory writes to our
271 * controller. I/O mapped register access, if allowed by the given
272 * platform, will work in almost all cases.
274 uint32_t aic79xx_allow_memio
= ~0;
277 * So that we can set how long each device is given as a selection timeout.
278 * The table of values goes like this:
283 * We default to 256ms because some older devices need a longer time
284 * to respond to initial selection.
286 static uint32_t aic79xx_seltime
;
289 * Certain devices do not perform any aging on commands. Should the
290 * device be saturated by commands in one portion of the disk, it is
291 * possible for transactions on far away sectors to never be serviced.
292 * To handle these devices, we can periodically send an ordered tag to
293 * force all outstanding transactions to be serviced prior to a new
296 uint32_t aic79xx_periodic_otag
;
298 /* Some storage boxes are using an LSI chip which has a bug making it
299 * impossible to use aic79xx Rev B chip in 320 speeds. The following
300 * storage boxes have been reported to be buggy:
301 * EonStor 3U 16-Bay: U16U-G3A3
302 * EonStor 2U 12-Bay: U12U-G3A3
303 * SentinelRAID: 2500F R5 / R6
304 * SentinelRAID: 2500F R1
305 * SentinelRAID: 2500F/1500F
308 * To get around this LSI bug, you can set your board to 160 mode
309 * or you can enable the SLOWCRC bit.
311 uint32_t aic79xx_slowcrc
;
314 * Module information and settable options.
316 static char *aic79xx
= NULL
;
318 MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>");
319 MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver");
320 MODULE_LICENSE("Dual BSD/GPL");
321 MODULE_VERSION(AIC79XX_DRIVER_VERSION
);
322 module_param(aic79xx
, charp
, 0444);
323 MODULE_PARM_DESC(aic79xx
,
324 "period-delimited options string:\n"
325 " verbose Enable verbose/diagnostic logging\n"
326 " allow_memio Allow device registers to be memory mapped\n"
327 " debug Bitmask of debug values to enable\n"
328 " no_reset Supress initial bus resets\n"
329 " extended Enable extended geometry on all controllers\n"
330 " periodic_otag Send an ordered tagged transaction\n"
331 " periodically to prevent tag starvation.\n"
332 " This may be required by some older disk\n"
333 " or drives/RAID arrays.\n"
334 " tag_info:<tag_str> Set per-target tag depth\n"
335 " global_tag_depth:<int> Global tag depth for all targets on all buses\n"
336 " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
337 " precomp:<pcomp_list> Set the signal precompensation (0-7).\n"
338 " amplitude:<int> Set the signal amplitude (0-7).\n"
339 " seltime:<int> Selection Timeout:\n"
340 " (0/256ms,1/128ms,2/64ms,3/32ms)\n"
341 " slowcrc Turn on the SLOWCRC bit (Rev B only)\n"
343 " Sample /etc/modprobe.conf line:\n"
344 " Enable verbose logging\n"
345 " Set tag depth on Controller 2/Target 2 to 10 tags\n"
346 " Shorten the selection timeout to 128ms\n"
348 " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n"
351 static void ahd_linux_handle_scsi_status(struct ahd_softc
*,
352 struct scsi_device
*,
354 static void ahd_linux_queue_cmd_complete(struct ahd_softc
*ahd
,
355 struct scsi_cmnd
*cmd
);
356 static int ahd_linux_queue_abort_cmd(struct scsi_cmnd
*cmd
);
357 static void ahd_linux_initialize_scsi_bus(struct ahd_softc
*ahd
);
358 static u_int
ahd_linux_user_tagdepth(struct ahd_softc
*ahd
,
359 struct ahd_devinfo
*devinfo
);
360 static void ahd_linux_device_queue_depth(struct scsi_device
*);
361 static int ahd_linux_run_command(struct ahd_softc
*,
362 struct ahd_linux_device
*,
364 static void ahd_linux_setup_tag_info_global(char *p
);
365 static int aic79xx_setup(char *c
);
367 static int ahd_linux_unit
;
370 /****************************** Inlines ***************************************/
371 static __inline
void ahd_linux_unmap_scb(struct ahd_softc
*, struct scb
*);
374 ahd_linux_unmap_scb(struct ahd_softc
*ahd
, struct scb
*scb
)
376 struct scsi_cmnd
*cmd
;
380 direction
= cmd
->sc_data_direction
;
381 ahd_sync_sglist(ahd
, scb
, BUS_DMASYNC_POSTWRITE
);
382 if (cmd
->use_sg
!= 0) {
383 struct scatterlist
*sg
;
385 sg
= (struct scatterlist
*)cmd
->request_buffer
;
386 pci_unmap_sg(ahd
->dev_softc
, sg
, cmd
->use_sg
, direction
);
387 } else if (cmd
->request_bufflen
!= 0) {
388 pci_unmap_single(ahd
->dev_softc
,
389 scb
->platform_data
->buf_busaddr
,
390 cmd
->request_bufflen
, direction
);
394 /******************************** Macros **************************************/
395 #define BUILD_SCSIID(ahd, cmd) \
396 (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id)
399 * Return a string describing the driver.
402 ahd_linux_info(struct Scsi_Host
*host
)
404 static char buffer
[512];
407 struct ahd_softc
*ahd
;
410 ahd
= *(struct ahd_softc
**)host
->hostdata
;
411 memset(bp
, 0, sizeof(buffer
));
412 strcpy(bp
, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
413 strcat(bp
, AIC79XX_DRIVER_VERSION
);
416 strcat(bp
, ahd
->description
);
419 ahd_controller_info(ahd
, ahd_info
);
420 strcat(bp
, ahd_info
);
427 * Queue an SCB to the controller.
430 ahd_linux_queue(struct scsi_cmnd
* cmd
, void (*scsi_done
) (struct scsi_cmnd
*))
432 struct ahd_softc
*ahd
;
433 struct ahd_linux_device
*dev
= scsi_transport_device_data(cmd
->device
);
434 int rtn
= SCSI_MLQUEUE_HOST_BUSY
;
436 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
438 cmd
->scsi_done
= scsi_done
;
439 cmd
->result
= CAM_REQ_INPROG
<< 16;
440 rtn
= ahd_linux_run_command(ahd
, dev
, cmd
);
445 static inline struct scsi_target
**
446 ahd_linux_target_in_softc(struct scsi_target
*starget
)
448 struct ahd_softc
*ahd
=
449 *((struct ahd_softc
**)dev_to_shost(&starget
->dev
)->hostdata
);
450 unsigned int target_offset
;
452 target_offset
= starget
->id
;
453 if (starget
->channel
!= 0)
456 return &ahd
->platform_data
->starget
[target_offset
];
460 ahd_linux_target_alloc(struct scsi_target
*starget
)
462 struct ahd_softc
*ahd
=
463 *((struct ahd_softc
**)dev_to_shost(&starget
->dev
)->hostdata
);
464 struct seeprom_config
*sc
= ahd
->seep_config
;
466 struct scsi_target
**ahd_targp
= ahd_linux_target_in_softc(starget
);
467 struct ahd_devinfo devinfo
;
468 struct ahd_initiator_tinfo
*tinfo
;
469 struct ahd_tmode_tstate
*tstate
;
470 char channel
= starget
->channel
+ 'A';
472 ahd_lock(ahd
, &flags
);
474 BUG_ON(*ahd_targp
!= NULL
);
476 *ahd_targp
= starget
;
479 int flags
= sc
->device_flags
[starget
->id
];
481 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
482 starget
->id
, &tstate
);
484 if ((flags
& CFPACKETIZED
) == 0) {
485 /* Do not negotiate packetized transfers */
486 spi_rd_strm(starget
) = 0;
487 spi_pcomp_en(starget
) = 0;
488 spi_rti(starget
) = 0;
489 spi_wr_flow(starget
) = 0;
490 spi_hold_mcs(starget
) = 0;
492 if ((ahd
->features
& AHD_RTI
) == 0)
493 spi_rti(starget
) = 0;
496 if ((flags
& CFQAS
) == 0)
497 spi_qas(starget
) = 0;
499 /* Transinfo values have been set to BIOS settings */
500 spi_max_width(starget
) = (flags
& CFWIDEB
) ? 1 : 0;
501 spi_min_period(starget
) = tinfo
->user
.period
;
502 spi_max_offset(starget
) = tinfo
->user
.offset
;
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 ahd_set_syncrate(ahd
, &devinfo
, 0, 0, 0,
511 AHD_TRANS_GOAL
, /*paused*/FALSE
);
512 ahd_set_width(ahd
, &devinfo
, MSG_EXT_WDTR_BUS_8_BIT
,
513 AHD_TRANS_GOAL
, /*paused*/FALSE
);
514 ahd_unlock(ahd
, &flags
);
520 ahd_linux_target_destroy(struct scsi_target
*starget
)
522 struct scsi_target
**ahd_targp
= ahd_linux_target_in_softc(starget
);
528 ahd_linux_slave_alloc(struct scsi_device
*sdev
)
530 struct ahd_softc
*ahd
=
531 *((struct ahd_softc
**)sdev
->host
->hostdata
);
532 struct ahd_linux_device
*dev
;
535 printf("%s: Slave Alloc %d\n", ahd_name(ahd
), sdev
->id
);
537 dev
= scsi_transport_device_data(sdev
);
538 memset(dev
, 0, sizeof(*dev
));
541 * We start out life using untagged
542 * transactions of which we allow one.
547 * Set maxtags to 0. This will be changed if we
548 * later determine that we are dealing with
549 * a tagged queuing capable device.
557 ahd_linux_slave_configure(struct scsi_device
*sdev
)
559 struct ahd_softc
*ahd
;
561 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
563 sdev_printk(KERN_INFO
, sdev
, "Slave Configure\n");
565 ahd_linux_device_queue_depth(sdev
);
567 /* Initial Domain Validation */
568 if (!spi_initial_dv(sdev
->sdev_target
))
574 #if defined(__i386__)
576 * Return the disk geometry for the given SCSI device.
579 ahd_linux_biosparam(struct scsi_device
*sdev
, struct block_device
*bdev
,
580 sector_t capacity
, int geom
[])
588 struct ahd_softc
*ahd
;
590 ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
592 bh
= scsi_bios_ptable(bdev
);
594 ret
= scsi_partsize(bh
, capacity
,
595 &geom
[2], &geom
[0], &geom
[1]);
602 cylinders
= aic_sector_div(capacity
, heads
, sectors
);
604 if (aic79xx_extended
!= 0)
607 extended
= (ahd
->flags
& AHD_EXTENDED_TRANS_A
) != 0;
608 if (extended
&& cylinders
>= 1024) {
611 cylinders
= aic_sector_div(capacity
, heads
, sectors
);
621 * Abort the current SCSI command(s).
624 ahd_linux_abort(struct scsi_cmnd
*cmd
)
628 error
= ahd_linux_queue_abort_cmd(cmd
);
634 * Attempt to send a target reset message to the device that timed out.
637 ahd_linux_dev_reset(struct scsi_cmnd
*cmd
)
639 struct ahd_softc
*ahd
;
640 struct ahd_linux_device
*dev
;
641 struct scb
*reset_scb
;
643 int retval
= SUCCESS
;
646 struct ahd_initiator_tinfo
*tinfo
;
647 struct ahd_tmode_tstate
*tstate
;
649 DECLARE_COMPLETION_ONSTACK(done
);
654 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
656 scmd_printk(KERN_INFO
, cmd
,
657 "Attempting to queue a TARGET RESET message:");
660 for (cdb_byte
= 0; cdb_byte
< cmd
->cmd_len
; cdb_byte
++)
661 printf(" 0x%x", cmd
->cmnd
[cdb_byte
]);
665 * Determine if we currently own this command.
667 dev
= scsi_transport_device_data(cmd
->device
);
671 * No target device for this command exists,
672 * so we must not still own the command.
674 scmd_printk(KERN_INFO
, cmd
, "Is not an active device\n");
679 * Generate us a new SCB
681 reset_scb
= ahd_get_scb(ahd
, AHD_NEVER_COL_IDX
);
683 scmd_printk(KERN_INFO
, cmd
, "No SCB available\n");
687 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
688 cmd
->device
->id
, &tstate
);
689 reset_scb
->io_ctx
= cmd
;
690 reset_scb
->platform_data
->dev
= dev
;
691 reset_scb
->sg_count
= 0;
692 ahd_set_residual(reset_scb
, 0);
693 ahd_set_sense_residual(reset_scb
, 0);
694 reset_scb
->platform_data
->xfer_len
= 0;
695 reset_scb
->hscb
->control
= 0;
696 reset_scb
->hscb
->scsiid
= BUILD_SCSIID(ahd
,cmd
);
697 reset_scb
->hscb
->lun
= cmd
->device
->lun
;
698 reset_scb
->hscb
->cdb_len
= 0;
699 reset_scb
->hscb
->task_management
= SIU_TASKMGMT_LUN_RESET
;
700 reset_scb
->flags
|= SCB_DEVICE_RESET
|SCB_RECOVERY_SCB
|SCB_ACTIVE
;
701 if ((tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0) {
702 reset_scb
->flags
|= SCB_PACKETIZED
;
704 reset_scb
->hscb
->control
|= MK_MESSAGE
;
708 dev
->commands_issued
++;
710 ahd_lock(ahd
, &flags
);
712 LIST_INSERT_HEAD(&ahd
->pending_scbs
, reset_scb
, pending_links
);
713 ahd_queue_scb(ahd
, reset_scb
);
715 ahd
->platform_data
->eh_done
= &done
;
716 ahd_unlock(ahd
, &flags
);
718 printf("%s: Device reset code sleeping\n", ahd_name(ahd
));
719 if (!wait_for_completion_timeout(&done
, 5 * HZ
)) {
720 ahd_lock(ahd
, &flags
);
721 ahd
->platform_data
->eh_done
= NULL
;
722 ahd_unlock(ahd
, &flags
);
723 printf("%s: Device reset timer expired (active %d)\n",
724 ahd_name(ahd
), dev
->active
);
727 printf("%s: Device reset returning 0x%x\n", ahd_name(ahd
), retval
);
733 * Reset the SCSI bus.
736 ahd_linux_bus_reset(struct scsi_cmnd
*cmd
)
738 struct ahd_softc
*ahd
;
742 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
744 if ((ahd_debug
& AHD_SHOW_RECOVERY
) != 0)
745 printf("%s: Bus reset called for cmd %p\n",
748 ahd_lock(ahd
, &flags
);
750 found
= ahd_reset_channel(ahd
, scmd_channel(cmd
) + 'A',
751 /*initiate reset*/TRUE
);
752 ahd_unlock(ahd
, &flags
);
755 printf("%s: SCSI bus reset delivered. "
756 "%d SCBs aborted.\n", ahd_name(ahd
), found
);
761 struct scsi_host_template aic79xx_driver_template
= {
762 .module
= THIS_MODULE
,
764 .proc_name
= "aic79xx",
765 .proc_info
= ahd_linux_proc_info
,
766 .info
= ahd_linux_info
,
767 .queuecommand
= ahd_linux_queue
,
768 .eh_abort_handler
= ahd_linux_abort
,
769 .eh_device_reset_handler
= ahd_linux_dev_reset
,
770 .eh_bus_reset_handler
= ahd_linux_bus_reset
,
771 #if defined(__i386__)
772 .bios_param
= ahd_linux_biosparam
,
774 .can_queue
= AHD_MAX_QUEUE
,
777 .use_clustering
= ENABLE_CLUSTERING
,
778 .slave_alloc
= ahd_linux_slave_alloc
,
779 .slave_configure
= ahd_linux_slave_configure
,
780 .target_alloc
= ahd_linux_target_alloc
,
781 .target_destroy
= ahd_linux_target_destroy
,
784 /******************************** Bus DMA *************************************/
786 ahd_dma_tag_create(struct ahd_softc
*ahd
, bus_dma_tag_t parent
,
787 bus_size_t alignment
, bus_size_t boundary
,
788 dma_addr_t lowaddr
, dma_addr_t highaddr
,
789 bus_dma_filter_t
*filter
, void *filterarg
,
790 bus_size_t maxsize
, int nsegments
,
791 bus_size_t maxsegsz
, int flags
, bus_dma_tag_t
*ret_tag
)
795 dmat
= malloc(sizeof(*dmat
), M_DEVBUF
, M_NOWAIT
);
800 * Linux is very simplistic about DMA memory. For now don't
801 * maintain all specification information. Once Linux supplies
802 * better facilities for doing these operations, or the
803 * needs of this particular driver change, we might need to do
806 dmat
->alignment
= alignment
;
807 dmat
->boundary
= boundary
;
808 dmat
->maxsize
= maxsize
;
814 ahd_dma_tag_destroy(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
)
816 free(dmat
, M_DEVBUF
);
820 ahd_dmamem_alloc(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, void** vaddr
,
821 int flags
, bus_dmamap_t
*mapp
)
823 *vaddr
= pci_alloc_consistent(ahd
->dev_softc
,
824 dmat
->maxsize
, mapp
);
831 ahd_dmamem_free(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
,
832 void* vaddr
, bus_dmamap_t map
)
834 pci_free_consistent(ahd
->dev_softc
, dmat
->maxsize
,
839 ahd_dmamap_load(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
,
840 void *buf
, bus_size_t buflen
, bus_dmamap_callback_t
*cb
,
841 void *cb_arg
, int flags
)
844 * Assume for now that this will only be used during
845 * initialization and not for per-transaction buffer mapping.
847 bus_dma_segment_t stack_sg
;
849 stack_sg
.ds_addr
= map
;
850 stack_sg
.ds_len
= dmat
->maxsize
;
851 cb(cb_arg
, &stack_sg
, /*nseg*/1, /*error*/0);
856 ahd_dmamap_destroy(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
)
861 ahd_dmamap_unload(struct ahd_softc
*ahd
, bus_dma_tag_t dmat
, bus_dmamap_t map
)
867 /********************* Platform Dependent Functions ***************************/
869 ahd_linux_setup_iocell_info(u_long index
, int instance
, int targ
, int32_t value
)
873 && (instance
< ARRAY_SIZE(aic79xx_iocell_info
))) {
874 uint8_t *iocell_info
;
876 iocell_info
= (uint8_t*)&aic79xx_iocell_info
[instance
];
877 iocell_info
[index
] = value
& 0xFFFF;
879 printf("iocell[%d:%ld] = %d\n", instance
, index
, value
);
884 ahd_linux_setup_tag_info_global(char *p
)
888 tags
= simple_strtoul(p
+ 1, NULL
, 0) & 0xff;
889 printf("Setting Global Tags= %d\n", tags
);
891 for (i
= 0; i
< ARRAY_SIZE(aic79xx_tag_info
); i
++) {
892 for (j
= 0; j
< AHD_NUM_TARGETS
; j
++) {
893 aic79xx_tag_info
[i
].tag_commands
[j
] = tags
;
899 ahd_linux_setup_tag_info(u_long arg
, int instance
, int targ
, int32_t value
)
902 if ((instance
>= 0) && (targ
>= 0)
903 && (instance
< ARRAY_SIZE(aic79xx_tag_info
))
904 && (targ
< AHD_NUM_TARGETS
)) {
905 aic79xx_tag_info
[instance
].tag_commands
[targ
] = value
& 0x1FF;
907 printf("tag_info[%d:%d] = %d\n", instance
, targ
, value
);
912 ahd_parse_brace_option(char *opt_name
, char *opt_arg
, char *end
, int depth
,
913 void (*callback
)(u_long
, int, int, int32_t),
922 char tok_list
[] = {'.', ',', '{', '}', '\0'};
924 /* All options use a ':' name/arg separator */
932 * Restore separator that may be in
933 * the middle of our option argument.
935 tok_end
= strchr(opt_arg
, '\0');
941 if (instance
== -1) {
948 printf("Malformed Option %s\n",
958 else if (instance
!= -1)
968 else if (instance
>= 0)
977 for (i
= 0; tok_list
[i
]; i
++) {
978 tok_end2
= strchr(opt_arg
, tok_list
[i
]);
979 if ((tok_end2
) && (tok_end2
< tok_end
))
982 callback(callback_arg
, instance
, targ
,
983 simple_strtol(opt_arg
, NULL
, 0));
992 * Handle Linux boot parameters. This routine allows for assigning a value
993 * to a parameter with a ':' between the parameter and the value.
994 * ie. aic79xx=stpwlev:1,extended
997 aic79xx_setup(char *s
)
1007 { "extended", &aic79xx_extended
},
1008 { "no_reset", &aic79xx_no_reset
},
1009 { "verbose", &aic79xx_verbose
},
1010 { "allow_memio", &aic79xx_allow_memio
},
1012 { "debug", &ahd_debug
},
1014 { "periodic_otag", &aic79xx_periodic_otag
},
1015 { "pci_parity", &aic79xx_pci_parity
},
1016 { "seltime", &aic79xx_seltime
},
1017 { "tag_info", NULL
},
1018 { "global_tag_depth", NULL
},
1019 { "slewrate", NULL
},
1020 { "precomp", NULL
},
1021 { "amplitude", NULL
},
1022 { "slowcrc", &aic79xx_slowcrc
},
1025 end
= strchr(s
, '\0');
1028 * XXX ia64 gcc isn't smart enough to know that ARRAY_SIZE
1029 * will never be 0 in this case.
1033 while ((p
= strsep(&s
, ",.")) != NULL
) {
1036 for (i
= 0; i
< ARRAY_SIZE(options
); i
++) {
1038 n
= strlen(options
[i
].name
);
1039 if (strncmp(options
[i
].name
, p
, n
) == 0)
1042 if (i
== ARRAY_SIZE(options
))
1045 if (strncmp(p
, "global_tag_depth", n
) == 0) {
1046 ahd_linux_setup_tag_info_global(p
+ n
);
1047 } else if (strncmp(p
, "tag_info", n
) == 0) {
1048 s
= ahd_parse_brace_option("tag_info", p
+ n
, end
,
1049 2, ahd_linux_setup_tag_info
, 0);
1050 } else if (strncmp(p
, "slewrate", n
) == 0) {
1051 s
= ahd_parse_brace_option("slewrate",
1052 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1053 AIC79XX_SLEWRATE_INDEX
);
1054 } else if (strncmp(p
, "precomp", n
) == 0) {
1055 s
= ahd_parse_brace_option("precomp",
1056 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1057 AIC79XX_PRECOMP_INDEX
);
1058 } else if (strncmp(p
, "amplitude", n
) == 0) {
1059 s
= ahd_parse_brace_option("amplitude",
1060 p
+ n
, end
, 1, ahd_linux_setup_iocell_info
,
1061 AIC79XX_AMPLITUDE_INDEX
);
1062 } else if (p
[n
] == ':') {
1063 *(options
[i
].flag
) = simple_strtoul(p
+ n
+ 1, NULL
, 0);
1064 } else if (!strncmp(p
, "verbose", n
)) {
1065 *(options
[i
].flag
) = 1;
1067 *(options
[i
].flag
) ^= 0xFFFFFFFF;
1073 __setup("aic79xx=", aic79xx_setup
);
1075 uint32_t aic79xx_verbose
;
1078 ahd_linux_register_host(struct ahd_softc
*ahd
, struct scsi_host_template
*template)
1081 struct Scsi_Host
*host
;
1086 template->name
= ahd
->description
;
1087 host
= scsi_host_alloc(template, sizeof(struct ahd_softc
*));
1091 *((struct ahd_softc
**)host
->hostdata
) = ahd
;
1092 ahd
->platform_data
->host
= host
;
1093 host
->can_queue
= AHD_MAX_QUEUE
;
1094 host
->cmd_per_lun
= 2;
1095 host
->sg_tablesize
= AHD_NSEG
;
1096 host
->this_id
= ahd
->our_id
;
1097 host
->irq
= ahd
->platform_data
->irq
;
1098 host
->max_id
= (ahd
->features
& AHD_WIDE
) ? 16 : 8;
1099 host
->max_lun
= AHD_NUM_LUNS
;
1100 host
->max_channel
= 0;
1101 host
->sg_tablesize
= AHD_NSEG
;
1103 ahd_set_unit(ahd
, ahd_linux_unit
++);
1104 ahd_unlock(ahd
, &s
);
1105 sprintf(buf
, "scsi%d", host
->host_no
);
1106 new_name
= malloc(strlen(buf
) + 1, M_DEVBUF
, M_NOWAIT
);
1107 if (new_name
!= NULL
) {
1108 strcpy(new_name
, buf
);
1109 ahd_set_name(ahd
, new_name
);
1111 host
->unique_id
= ahd
->unit
;
1112 ahd_linux_initialize_scsi_bus(ahd
);
1113 ahd_intr_enable(ahd
, TRUE
);
1115 host
->transportt
= ahd_linux_transport_template
;
1117 retval
= scsi_add_host(host
, &ahd
->dev_softc
->dev
);
1119 printk(KERN_WARNING
"aic79xx: scsi_add_host failed\n");
1120 scsi_host_put(host
);
1124 scsi_scan_host(host
);
1129 ahd_linux_get_memsize(void)
1134 return ((uint64_t)si
.totalram
<< PAGE_SHIFT
);
1138 * Place the SCSI bus into a known state by either resetting it,
1139 * or forcing transfer negotiations on the next command to any
1143 ahd_linux_initialize_scsi_bus(struct ahd_softc
*ahd
)
1152 if (aic79xx_no_reset
!= 0)
1153 ahd
->flags
&= ~AHD_RESET_BUS_A
;
1155 if ((ahd
->flags
& AHD_RESET_BUS_A
) != 0)
1156 ahd_reset_channel(ahd
, 'A', /*initiate_reset*/TRUE
);
1158 numtarg
= (ahd
->features
& AHD_WIDE
) ? 16 : 8;
1163 * Force negotiation to async for all targets that
1164 * will not see an initial bus reset.
1166 for (; target_id
< numtarg
; target_id
++) {
1167 struct ahd_devinfo devinfo
;
1168 struct ahd_initiator_tinfo
*tinfo
;
1169 struct ahd_tmode_tstate
*tstate
;
1171 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
1172 target_id
, &tstate
);
1173 ahd_compile_devinfo(&devinfo
, ahd
->our_id
, target_id
,
1174 CAM_LUN_WILDCARD
, 'A', ROLE_INITIATOR
);
1175 ahd_update_neg_request(ahd
, &devinfo
, tstate
,
1176 tinfo
, AHD_NEG_ALWAYS
);
1178 ahd_unlock(ahd
, &s
);
1179 /* Give the bus some time to recover */
1180 if ((ahd
->flags
& AHD_RESET_BUS_A
) != 0) {
1181 ahd_freeze_simq(ahd
);
1182 msleep(AIC79XX_RESET_DELAY
);
1183 ahd_release_simq(ahd
);
1188 ahd_platform_alloc(struct ahd_softc
*ahd
, void *platform_arg
)
1190 ahd
->platform_data
=
1191 malloc(sizeof(struct ahd_platform_data
), M_DEVBUF
, M_NOWAIT
);
1192 if (ahd
->platform_data
== NULL
)
1194 memset(ahd
->platform_data
, 0, sizeof(struct ahd_platform_data
));
1195 ahd
->platform_data
->irq
= AHD_LINUX_NOIRQ
;
1197 ahd
->seltime
= (aic79xx_seltime
& 0x3) << 4;
1202 ahd_platform_free(struct ahd_softc
*ahd
)
1204 struct scsi_target
*starget
;
1207 if (ahd
->platform_data
!= NULL
) {
1208 /* destroy all of the device and target objects */
1209 for (i
= 0; i
< AHD_NUM_TARGETS
; i
++) {
1210 starget
= ahd
->platform_data
->starget
[i
];
1211 if (starget
!= NULL
) {
1212 ahd
->platform_data
->starget
[i
] = NULL
;
1216 if (ahd
->platform_data
->irq
!= AHD_LINUX_NOIRQ
)
1217 free_irq(ahd
->platform_data
->irq
, ahd
);
1218 if (ahd
->tags
[0] == BUS_SPACE_PIO
1219 && ahd
->bshs
[0].ioport
!= 0)
1220 release_region(ahd
->bshs
[0].ioport
, 256);
1221 if (ahd
->tags
[1] == BUS_SPACE_PIO
1222 && ahd
->bshs
[1].ioport
!= 0)
1223 release_region(ahd
->bshs
[1].ioport
, 256);
1224 if (ahd
->tags
[0] == BUS_SPACE_MEMIO
1225 && ahd
->bshs
[0].maddr
!= NULL
) {
1226 iounmap(ahd
->bshs
[0].maddr
);
1227 release_mem_region(ahd
->platform_data
->mem_busaddr
,
1230 if (ahd
->platform_data
->host
)
1231 scsi_host_put(ahd
->platform_data
->host
);
1233 free(ahd
->platform_data
, M_DEVBUF
);
1238 ahd_platform_init(struct ahd_softc
*ahd
)
1241 * Lookup and commit any modified IO Cell options.
1243 if (ahd
->unit
< ARRAY_SIZE(aic79xx_iocell_info
)) {
1244 struct ahd_linux_iocell_opts
*iocell_opts
;
1246 iocell_opts
= &aic79xx_iocell_info
[ahd
->unit
];
1247 if (iocell_opts
->precomp
!= AIC79XX_DEFAULT_PRECOMP
)
1248 AHD_SET_PRECOMP(ahd
, iocell_opts
->precomp
);
1249 if (iocell_opts
->slewrate
!= AIC79XX_DEFAULT_SLEWRATE
)
1250 AHD_SET_SLEWRATE(ahd
, iocell_opts
->slewrate
);
1251 if (iocell_opts
->amplitude
!= AIC79XX_DEFAULT_AMPLITUDE
)
1252 AHD_SET_AMPLITUDE(ahd
, iocell_opts
->amplitude
);
1258 ahd_platform_freeze_devq(struct ahd_softc
*ahd
, struct scb
*scb
)
1260 ahd_platform_abort_scbs(ahd
, SCB_GET_TARGET(ahd
, scb
),
1261 SCB_GET_CHANNEL(ahd
, scb
),
1262 SCB_GET_LUN(scb
), SCB_LIST_NULL
,
1263 ROLE_UNKNOWN
, CAM_REQUEUE_REQ
);
1267 ahd_platform_set_tags(struct ahd_softc
*ahd
, struct scsi_device
*sdev
,
1268 struct ahd_devinfo
*devinfo
, ahd_queue_alg alg
)
1270 struct ahd_linux_device
*dev
;
1277 dev
= scsi_transport_device_data(sdev
);
1281 was_queuing
= dev
->flags
& (AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
);
1284 case AHD_QUEUE_NONE
:
1287 case AHD_QUEUE_BASIC
:
1288 now_queuing
= AHD_DEV_Q_BASIC
;
1290 case AHD_QUEUE_TAGGED
:
1291 now_queuing
= AHD_DEV_Q_TAGGED
;
1294 if ((dev
->flags
& AHD_DEV_FREEZE_TIL_EMPTY
) == 0
1295 && (was_queuing
!= now_queuing
)
1296 && (dev
->active
!= 0)) {
1297 dev
->flags
|= AHD_DEV_FREEZE_TIL_EMPTY
;
1301 dev
->flags
&= ~(AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
|AHD_DEV_PERIODIC_OTAG
);
1305 usertags
= ahd_linux_user_tagdepth(ahd
, devinfo
);
1308 * Start out agressively and allow our
1309 * dynamic queue depth algorithm to take
1312 dev
->maxtags
= usertags
;
1313 dev
->openings
= dev
->maxtags
- dev
->active
;
1315 if (dev
->maxtags
== 0) {
1317 * Queueing is disabled by the user.
1320 } else if (alg
== AHD_QUEUE_TAGGED
) {
1321 dev
->flags
|= AHD_DEV_Q_TAGGED
;
1322 if (aic79xx_periodic_otag
!= 0)
1323 dev
->flags
|= AHD_DEV_PERIODIC_OTAG
;
1325 dev
->flags
|= AHD_DEV_Q_BASIC
;
1327 /* We can only have one opening. */
1329 dev
->openings
= 1 - dev
->active
;
1332 switch ((dev
->flags
& (AHD_DEV_Q_BASIC
|AHD_DEV_Q_TAGGED
))) {
1333 case AHD_DEV_Q_BASIC
:
1334 scsi_set_tag_type(sdev
, MSG_SIMPLE_TASK
);
1335 scsi_activate_tcq(sdev
, dev
->openings
+ dev
->active
);
1337 case AHD_DEV_Q_TAGGED
:
1338 scsi_set_tag_type(sdev
, MSG_ORDERED_TASK
);
1339 scsi_activate_tcq(sdev
, dev
->openings
+ dev
->active
);
1343 * We allow the OS to queue 2 untagged transactions to
1344 * us at any time even though we can only execute them
1345 * serially on the controller/device. This should
1346 * remove some latency.
1348 scsi_deactivate_tcq(sdev
, 1);
1354 ahd_platform_abort_scbs(struct ahd_softc
*ahd
, int target
, char channel
,
1355 int lun
, u_int tag
, role_t role
, uint32_t status
)
1361 ahd_linux_user_tagdepth(struct ahd_softc
*ahd
, struct ahd_devinfo
*devinfo
)
1363 static int warned_user
;
1367 if ((ahd
->user_discenable
& devinfo
->target_mask
) != 0) {
1368 if (ahd
->unit
>= ARRAY_SIZE(aic79xx_tag_info
)) {
1370 if (warned_user
== 0) {
1372 "aic79xx: WARNING: Insufficient tag_info instances\n"
1373 "aic79xx: for installed controllers. Using defaults\n"
1374 "aic79xx: Please update the aic79xx_tag_info array in\n"
1375 "aic79xx: the aic79xx_osm.c source file.\n");
1378 tags
= AHD_MAX_QUEUE
;
1380 adapter_tag_info_t
*tag_info
;
1382 tag_info
= &aic79xx_tag_info
[ahd
->unit
];
1383 tags
= tag_info
->tag_commands
[devinfo
->target_offset
];
1384 if (tags
> AHD_MAX_QUEUE
)
1385 tags
= AHD_MAX_QUEUE
;
1392 * Determines the queue depth for a given device.
1395 ahd_linux_device_queue_depth(struct scsi_device
*sdev
)
1397 struct ahd_devinfo devinfo
;
1399 struct ahd_softc
*ahd
= *((struct ahd_softc
**)sdev
->host
->hostdata
);
1401 ahd_compile_devinfo(&devinfo
,
1403 sdev
->sdev_target
->id
, sdev
->lun
,
1404 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1406 tags
= ahd_linux_user_tagdepth(ahd
, &devinfo
);
1407 if (tags
!= 0 && sdev
->tagged_supported
!= 0) {
1409 ahd_platform_set_tags(ahd
, sdev
, &devinfo
, AHD_QUEUE_TAGGED
);
1410 ahd_send_async(ahd
, devinfo
.channel
, devinfo
.target
,
1411 devinfo
.lun
, AC_TRANSFER_NEG
);
1412 ahd_print_devinfo(ahd
, &devinfo
);
1413 printf("Tagged Queuing enabled. Depth %d\n", tags
);
1415 ahd_platform_set_tags(ahd
, sdev
, &devinfo
, AHD_QUEUE_NONE
);
1416 ahd_send_async(ahd
, devinfo
.channel
, devinfo
.target
,
1417 devinfo
.lun
, AC_TRANSFER_NEG
);
1422 ahd_linux_run_command(struct ahd_softc
*ahd
, struct ahd_linux_device
*dev
,
1423 struct scsi_cmnd
*cmd
)
1426 struct hardware_scb
*hscb
;
1427 struct ahd_initiator_tinfo
*tinfo
;
1428 struct ahd_tmode_tstate
*tstate
;
1431 unsigned long flags
;
1433 ahd_lock(ahd
, &flags
);
1436 * Get an scb to use.
1438 tinfo
= ahd_fetch_transinfo(ahd
, 'A', ahd
->our_id
,
1439 cmd
->device
->id
, &tstate
);
1440 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) == 0
1441 || (tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0) {
1442 col_idx
= AHD_NEVER_COL_IDX
;
1444 col_idx
= AHD_BUILD_COL_IDX(cmd
->device
->id
,
1447 if ((scb
= ahd_get_scb(ahd
, col_idx
)) == NULL
) {
1448 ahd
->flags
|= AHD_RESOURCE_SHORTAGE
;
1449 ahd_unlock(ahd
, &flags
);
1450 return SCSI_MLQUEUE_HOST_BUSY
;
1454 scb
->platform_data
->dev
= dev
;
1456 cmd
->host_scribble
= (char *)scb
;
1459 * Fill out basics of the HSCB.
1462 hscb
->scsiid
= BUILD_SCSIID(ahd
, cmd
);
1463 hscb
->lun
= cmd
->device
->lun
;
1464 scb
->hscb
->task_management
= 0;
1465 mask
= SCB_GET_TARGET_MASK(ahd
, scb
);
1467 if ((ahd
->user_discenable
& mask
) != 0)
1468 hscb
->control
|= DISCENB
;
1470 if ((tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
) != 0)
1471 scb
->flags
|= SCB_PACKETIZED
;
1473 if ((tstate
->auto_negotiate
& mask
) != 0) {
1474 scb
->flags
|= SCB_AUTO_NEGOTIATE
;
1475 scb
->hscb
->control
|= MK_MESSAGE
;
1478 if ((dev
->flags
& (AHD_DEV_Q_TAGGED
|AHD_DEV_Q_BASIC
)) != 0) {
1480 uint8_t tag_msgs
[2];
1482 msg_bytes
= scsi_populate_tag_msg(cmd
, tag_msgs
);
1483 if (msg_bytes
&& tag_msgs
[0] != MSG_SIMPLE_TASK
) {
1484 hscb
->control
|= tag_msgs
[0];
1485 if (tag_msgs
[0] == MSG_ORDERED_TASK
)
1486 dev
->commands_since_idle_or_otag
= 0;
1488 if (dev
->commands_since_idle_or_otag
== AHD_OTAG_THRESH
1489 && (dev
->flags
& AHD_DEV_Q_TAGGED
) != 0) {
1490 hscb
->control
|= MSG_ORDERED_TASK
;
1491 dev
->commands_since_idle_or_otag
= 0;
1493 hscb
->control
|= MSG_SIMPLE_TASK
;
1497 hscb
->cdb_len
= cmd
->cmd_len
;
1498 memcpy(hscb
->shared_data
.idata
.cdb
, cmd
->cmnd
, hscb
->cdb_len
);
1500 scb
->platform_data
->xfer_len
= 0;
1501 ahd_set_residual(scb
, 0);
1502 ahd_set_sense_residual(scb
, 0);
1504 if (cmd
->use_sg
!= 0) {
1506 struct scatterlist
*cur_seg
;
1510 cur_seg
= (struct scatterlist
*)cmd
->request_buffer
;
1511 dir
= cmd
->sc_data_direction
;
1512 nseg
= pci_map_sg(ahd
->dev_softc
, cur_seg
,
1514 scb
->platform_data
->xfer_len
= 0;
1515 for (sg
= scb
->sg_list
; nseg
> 0; nseg
--, cur_seg
++) {
1519 addr
= sg_dma_address(cur_seg
);
1520 len
= sg_dma_len(cur_seg
);
1521 scb
->platform_data
->xfer_len
+= len
;
1522 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
, len
,
1525 } else if (cmd
->request_bufflen
!= 0) {
1531 dir
= cmd
->sc_data_direction
;
1532 addr
= pci_map_single(ahd
->dev_softc
,
1533 cmd
->request_buffer
,
1534 cmd
->request_bufflen
, dir
);
1535 scb
->platform_data
->xfer_len
= cmd
->request_bufflen
;
1536 scb
->platform_data
->buf_busaddr
= addr
;
1537 sg
= ahd_sg_setup(ahd
, scb
, sg
, addr
,
1538 cmd
->request_bufflen
, /*last*/TRUE
);
1541 LIST_INSERT_HEAD(&ahd
->pending_scbs
, scb
, pending_links
);
1544 dev
->commands_issued
++;
1546 if ((dev
->flags
& AHD_DEV_PERIODIC_OTAG
) != 0)
1547 dev
->commands_since_idle_or_otag
++;
1548 scb
->flags
|= SCB_ACTIVE
;
1549 ahd_queue_scb(ahd
, scb
);
1551 ahd_unlock(ahd
, &flags
);
1557 * SCSI controller interrupt handler.
1560 ahd_linux_isr(int irq
, void *dev_id
)
1562 struct ahd_softc
*ahd
;
1566 ahd
= (struct ahd_softc
*) dev_id
;
1567 ahd_lock(ahd
, &flags
);
1568 ours
= ahd_intr(ahd
);
1569 ahd_unlock(ahd
, &flags
);
1570 return IRQ_RETVAL(ours
);
1574 ahd_send_async(struct ahd_softc
*ahd
, char channel
,
1575 u_int target
, u_int lun
, ac_code code
)
1578 case AC_TRANSFER_NEG
:
1581 struct scsi_target
*starget
;
1582 struct info_str info
;
1583 struct ahd_initiator_tinfo
*tinfo
;
1584 struct ahd_tmode_tstate
*tstate
;
1585 unsigned int target_ppr_options
;
1587 BUG_ON(target
== CAM_TARGET_WILDCARD
);
1590 info
.length
= sizeof(buf
);
1593 tinfo
= ahd_fetch_transinfo(ahd
, channel
, ahd
->our_id
,
1597 * Don't bother reporting results while
1598 * negotiations are still pending.
1600 if (tinfo
->curr
.period
!= tinfo
->goal
.period
1601 || tinfo
->curr
.width
!= tinfo
->goal
.width
1602 || tinfo
->curr
.offset
!= tinfo
->goal
.offset
1603 || tinfo
->curr
.ppr_options
!= tinfo
->goal
.ppr_options
)
1604 if (bootverbose
== 0)
1608 * Don't bother reporting results that
1609 * are identical to those last reported.
1611 starget
= ahd
->platform_data
->starget
[target
];
1612 if (starget
== NULL
)
1615 target_ppr_options
=
1616 (spi_dt(starget
) ? MSG_EXT_PPR_DT_REQ
: 0)
1617 + (spi_qas(starget
) ? MSG_EXT_PPR_QAS_REQ
: 0)
1618 + (spi_iu(starget
) ? MSG_EXT_PPR_IU_REQ
: 0)
1619 + (spi_rd_strm(starget
) ? MSG_EXT_PPR_RD_STRM
: 0)
1620 + (spi_pcomp_en(starget
) ? MSG_EXT_PPR_PCOMP_EN
: 0)
1621 + (spi_rti(starget
) ? MSG_EXT_PPR_RTI
: 0)
1622 + (spi_wr_flow(starget
) ? MSG_EXT_PPR_WR_FLOW
: 0)
1623 + (spi_hold_mcs(starget
) ? MSG_EXT_PPR_HOLD_MCS
: 0);
1625 if (tinfo
->curr
.period
== spi_period(starget
)
1626 && tinfo
->curr
.width
== spi_width(starget
)
1627 && tinfo
->curr
.offset
== spi_offset(starget
)
1628 && tinfo
->curr
.ppr_options
== target_ppr_options
)
1629 if (bootverbose
== 0)
1632 spi_period(starget
) = tinfo
->curr
.period
;
1633 spi_width(starget
) = tinfo
->curr
.width
;
1634 spi_offset(starget
) = tinfo
->curr
.offset
;
1635 spi_dt(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_DT_REQ
? 1 : 0;
1636 spi_qas(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_QAS_REQ
? 1 : 0;
1637 spi_iu(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_IU_REQ
? 1 : 0;
1638 spi_rd_strm(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_RD_STRM
? 1 : 0;
1639 spi_pcomp_en(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_PCOMP_EN
? 1 : 0;
1640 spi_rti(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_RTI
? 1 : 0;
1641 spi_wr_flow(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_WR_FLOW
? 1 : 0;
1642 spi_hold_mcs(starget
) = tinfo
->curr
.ppr_options
& MSG_EXT_PPR_HOLD_MCS
? 1 : 0;
1643 spi_display_xfer_agreement(starget
);
1648 WARN_ON(lun
!= CAM_LUN_WILDCARD
);
1649 scsi_report_device_reset(ahd
->platform_data
->host
,
1650 channel
- 'A', target
);
1654 if (ahd
->platform_data
->host
!= NULL
) {
1655 scsi_report_bus_reset(ahd
->platform_data
->host
,
1660 panic("ahd_send_async: Unexpected async event");
1665 * Calls the higher level scsi done function and frees the scb.
1668 ahd_done(struct ahd_softc
*ahd
, struct scb
*scb
)
1670 struct scsi_cmnd
*cmd
;
1671 struct ahd_linux_device
*dev
;
1673 if ((scb
->flags
& SCB_ACTIVE
) == 0) {
1674 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb
));
1675 ahd_dump_card_state(ahd
);
1676 panic("Stopping for safety");
1678 LIST_REMOVE(scb
, pending_links
);
1680 dev
= scb
->platform_data
->dev
;
1683 if ((cmd
->result
& (CAM_DEV_QFRZN
<< 16)) != 0) {
1684 cmd
->result
&= ~(CAM_DEV_QFRZN
<< 16);
1687 ahd_linux_unmap_scb(ahd
, scb
);
1690 * Guard against stale sense data.
1691 * The Linux mid-layer assumes that sense
1692 * was retrieved anytime the first byte of
1693 * the sense buffer looks "sane".
1695 cmd
->sense_buffer
[0] = 0;
1696 if (ahd_get_transaction_status(scb
) == CAM_REQ_INPROG
) {
1697 uint32_t amount_xferred
;
1700 ahd_get_transfer_length(scb
) - ahd_get_residual(scb
);
1701 if ((scb
->flags
& SCB_TRANSMISSION_ERROR
) != 0) {
1703 if ((ahd_debug
& AHD_SHOW_MISC
) != 0) {
1704 ahd_print_path(ahd
, scb
);
1705 printf("Set CAM_UNCOR_PARITY\n");
1708 ahd_set_transaction_status(scb
, CAM_UNCOR_PARITY
);
1709 #ifdef AHD_REPORT_UNDERFLOWS
1711 * This code is disabled by default as some
1712 * clients of the SCSI system do not properly
1713 * initialize the underflow parameter. This
1714 * results in spurious termination of commands
1715 * that complete as expected (e.g. underflow is
1716 * allowed as command can return variable amounts
1719 } else if (amount_xferred
< scb
->io_ctx
->underflow
) {
1722 ahd_print_path(ahd
, scb
);
1724 for (i
= 0; i
< scb
->io_ctx
->cmd_len
; i
++)
1725 printf(" 0x%x", scb
->io_ctx
->cmnd
[i
]);
1727 ahd_print_path(ahd
, scb
);
1728 printf("Saw underflow (%ld of %ld bytes). "
1729 "Treated as error\n",
1730 ahd_get_residual(scb
),
1731 ahd_get_transfer_length(scb
));
1732 ahd_set_transaction_status(scb
, CAM_DATA_RUN_ERR
);
1735 ahd_set_transaction_status(scb
, CAM_REQ_CMP
);
1737 } else if (ahd_get_transaction_status(scb
) == CAM_SCSI_STATUS_ERROR
) {
1738 ahd_linux_handle_scsi_status(ahd
, cmd
->device
, scb
);
1741 if (dev
->openings
== 1
1742 && ahd_get_transaction_status(scb
) == CAM_REQ_CMP
1743 && ahd_get_scsi_status(scb
) != SCSI_STATUS_QUEUE_FULL
)
1744 dev
->tag_success_count
++;
1746 * Some devices deal with temporary internal resource
1747 * shortages by returning queue full. When the queue
1748 * full occurrs, we throttle back. Slowly try to get
1749 * back to our previous queue depth.
1751 if ((dev
->openings
+ dev
->active
) < dev
->maxtags
1752 && dev
->tag_success_count
> AHD_TAG_SUCCESS_INTERVAL
) {
1753 dev
->tag_success_count
= 0;
1757 if (dev
->active
== 0)
1758 dev
->commands_since_idle_or_otag
= 0;
1760 if ((scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
1761 printf("Recovery SCB completes\n");
1762 if (ahd_get_transaction_status(scb
) == CAM_BDR_SENT
1763 || ahd_get_transaction_status(scb
) == CAM_REQ_ABORTED
)
1764 ahd_set_transaction_status(scb
, CAM_CMD_TIMEOUT
);
1766 if (ahd
->platform_data
->eh_done
)
1767 complete(ahd
->platform_data
->eh_done
);
1770 ahd_free_scb(ahd
, scb
);
1771 ahd_linux_queue_cmd_complete(ahd
, cmd
);
1775 ahd_linux_handle_scsi_status(struct ahd_softc
*ahd
,
1776 struct scsi_device
*sdev
, struct scb
*scb
)
1778 struct ahd_devinfo devinfo
;
1779 struct ahd_linux_device
*dev
= scsi_transport_device_data(sdev
);
1781 ahd_compile_devinfo(&devinfo
,
1783 sdev
->sdev_target
->id
, sdev
->lun
,
1784 sdev
->sdev_target
->channel
== 0 ? 'A' : 'B',
1788 * We don't currently trust the mid-layer to
1789 * properly deal with queue full or busy. So,
1790 * when one occurs, we tell the mid-layer to
1791 * unconditionally requeue the command to us
1792 * so that we can retry it ourselves. We also
1793 * implement our own throttling mechanism so
1794 * we don't clobber the device with too many
1797 switch (ahd_get_scsi_status(scb
)) {
1800 case SCSI_STATUS_CHECK_COND
:
1801 case SCSI_STATUS_CMD_TERMINATED
:
1803 struct scsi_cmnd
*cmd
;
1806 * Copy sense information to the OS's cmd
1807 * structure if it is available.
1810 if ((scb
->flags
& (SCB_SENSE
|SCB_PKT_SENSE
)) != 0) {
1811 struct scsi_status_iu_header
*siu
;
1815 if (scb
->flags
& SCB_SENSE
) {
1816 sense_size
= MIN(sizeof(struct scsi_sense_data
)
1817 - ahd_get_sense_residual(scb
),
1818 sizeof(cmd
->sense_buffer
));
1822 * Copy only the sense data into the provided
1825 siu
= (struct scsi_status_iu_header
*)
1827 sense_size
= MIN(scsi_4btoul(siu
->sense_length
),
1828 sizeof(cmd
->sense_buffer
));
1829 sense_offset
= SIU_SENSE_OFFSET(siu
);
1832 memset(cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
1833 memcpy(cmd
->sense_buffer
,
1834 ahd_get_sense_buf(ahd
, scb
)
1835 + sense_offset
, sense_size
);
1836 cmd
->result
|= (DRIVER_SENSE
<< 24);
1839 if (ahd_debug
& AHD_SHOW_SENSE
) {
1842 printf("Copied %d bytes of sense data at %d:",
1843 sense_size
, sense_offset
);
1844 for (i
= 0; i
< sense_size
; i
++) {
1847 printf("0x%x ", cmd
->sense_buffer
[i
]);
1855 case SCSI_STATUS_QUEUE_FULL
:
1857 * By the time the core driver has returned this
1858 * command, all other commands that were queued
1859 * to us but not the device have been returned.
1860 * This ensures that dev->active is equal to
1861 * the number of commands actually queued to
1864 dev
->tag_success_count
= 0;
1865 if (dev
->active
!= 0) {
1867 * Drop our opening count to the number
1868 * of commands currently outstanding.
1872 if ((ahd_debug
& AHD_SHOW_QFULL
) != 0) {
1873 ahd_print_path(ahd
, scb
);
1874 printf("Dropping tag count to %d\n",
1878 if (dev
->active
== dev
->tags_on_last_queuefull
) {
1880 dev
->last_queuefull_same_count
++;
1882 * If we repeatedly see a queue full
1883 * at the same queue depth, this
1884 * device has a fixed number of tag
1885 * slots. Lock in this tag depth
1886 * so we stop seeing queue fulls from
1889 if (dev
->last_queuefull_same_count
1890 == AHD_LOCK_TAGS_COUNT
) {
1891 dev
->maxtags
= dev
->active
;
1892 ahd_print_path(ahd
, scb
);
1893 printf("Locking max tag count at %d\n",
1897 dev
->tags_on_last_queuefull
= dev
->active
;
1898 dev
->last_queuefull_same_count
= 0;
1900 ahd_set_transaction_status(scb
, CAM_REQUEUE_REQ
);
1901 ahd_set_scsi_status(scb
, SCSI_STATUS_OK
);
1902 ahd_platform_set_tags(ahd
, sdev
, &devinfo
,
1903 (dev
->flags
& AHD_DEV_Q_BASIC
)
1904 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1908 * Drop down to a single opening, and treat this
1909 * as if the target returned BUSY SCSI status.
1912 ahd_platform_set_tags(ahd
, sdev
, &devinfo
,
1913 (dev
->flags
& AHD_DEV_Q_BASIC
)
1914 ? AHD_QUEUE_BASIC
: AHD_QUEUE_TAGGED
);
1915 ahd_set_scsi_status(scb
, SCSI_STATUS_BUSY
);
1920 ahd_linux_queue_cmd_complete(struct ahd_softc
*ahd
, struct scsi_cmnd
*cmd
)
1923 int new_status
= DID_OK
;
1924 int do_fallback
= 0;
1928 * Map CAM error codes into Linux Error codes. We
1929 * avoid the conversion so that the DV code has the
1930 * full error information available when making
1931 * state change decisions.
1934 status
= ahd_cmd_get_transaction_status(cmd
);
1936 case CAM_REQ_INPROG
:
1938 new_status
= DID_OK
;
1940 case CAM_AUTOSENSE_FAIL
:
1941 new_status
= DID_ERROR
;
1943 case CAM_SCSI_STATUS_ERROR
:
1944 scsi_status
= ahd_cmd_get_scsi_status(cmd
);
1946 switch(scsi_status
) {
1947 case SCSI_STATUS_CMD_TERMINATED
:
1948 case SCSI_STATUS_CHECK_COND
:
1949 if ((cmd
->result
>> 24) != DRIVER_SENSE
) {
1952 struct scsi_sense_data
*sense
;
1954 sense
= (struct scsi_sense_data
*)
1956 if (sense
->extra_len
>= 5 &&
1957 (sense
->add_sense_code
== 0x47
1958 || sense
->add_sense_code
== 0x48))
1966 case CAM_REQ_ABORTED
:
1967 new_status
= DID_ABORT
;
1970 new_status
= DID_BUS_BUSY
;
1972 case CAM_REQ_INVALID
:
1973 case CAM_PATH_INVALID
:
1974 new_status
= DID_BAD_TARGET
;
1976 case CAM_SEL_TIMEOUT
:
1977 new_status
= DID_NO_CONNECT
;
1979 case CAM_SCSI_BUS_RESET
:
1981 new_status
= DID_RESET
;
1983 case CAM_UNCOR_PARITY
:
1984 new_status
= DID_PARITY
;
1987 case CAM_CMD_TIMEOUT
:
1988 new_status
= DID_TIME_OUT
;
1991 case CAM_REQ_CMP_ERR
:
1992 case CAM_UNEXP_BUSFREE
:
1993 case CAM_DATA_RUN_ERR
:
1994 new_status
= DID_ERROR
;
1999 case CAM_SEQUENCE_FAIL
:
2000 case CAM_CCB_LEN_ERR
:
2001 case CAM_PROVIDE_FAIL
:
2002 case CAM_REQ_TERMIO
:
2003 case CAM_UNREC_HBA_ERROR
:
2004 case CAM_REQ_TOO_BIG
:
2005 new_status
= DID_ERROR
;
2007 case CAM_REQUEUE_REQ
:
2008 new_status
= DID_REQUEUE
;
2011 /* We should never get here */
2012 new_status
= DID_ERROR
;
2017 printf("%s: device overrun (status %x) on %d:%d:%d\n",
2018 ahd_name(ahd
), status
, cmd
->device
->channel
,
2019 cmd
->device
->id
, cmd
->device
->lun
);
2022 ahd_cmd_set_transaction_status(cmd
, new_status
);
2024 cmd
->scsi_done(cmd
);
2028 ahd_freeze_simq(struct ahd_softc
*ahd
)
2030 scsi_block_requests(ahd
->platform_data
->host
);
2034 ahd_release_simq(struct ahd_softc
*ahd
)
2036 scsi_unblock_requests(ahd
->platform_data
->host
);
2040 ahd_linux_queue_abort_cmd(struct scsi_cmnd
*cmd
)
2042 struct ahd_softc
*ahd
;
2043 struct ahd_linux_device
*dev
;
2044 struct scb
*pending_scb
;
2046 u_int active_scbptr
;
2055 ahd_mode_state saved_modes
;
2056 unsigned long flags
;
2061 ahd
= *(struct ahd_softc
**)cmd
->device
->host
->hostdata
;
2063 scmd_printk(KERN_INFO
, cmd
,
2064 "Attempting to queue an ABORT message:");
2067 for (cdb_byte
= 0; cdb_byte
< cmd
->cmd_len
; cdb_byte
++)
2068 printf(" 0x%x", cmd
->cmnd
[cdb_byte
]);
2071 ahd_lock(ahd
, &flags
);
2074 * First determine if we currently own this command.
2075 * Start by searching the device queue. If not found
2076 * there, check the pending_scb list. If not found
2077 * at all, and the system wanted us to just abort the
2078 * command, return success.
2080 dev
= scsi_transport_device_data(cmd
->device
);
2084 * No target device for this command exists,
2085 * so we must not still own the command.
2087 scmd_printk(KERN_INFO
, cmd
, "Is not an active device\n");
2093 * See if we can find a matching cmd in the pending list.
2095 LIST_FOREACH(pending_scb
, &ahd
->pending_scbs
, pending_links
) {
2096 if (pending_scb
->io_ctx
== cmd
)
2100 if (pending_scb
== NULL
) {
2101 scmd_printk(KERN_INFO
, cmd
, "Command not found\n");
2105 if ((pending_scb
->flags
& SCB_RECOVERY_SCB
) != 0) {
2107 * We can't queue two recovery actions using the same SCB
2114 * Ensure that the card doesn't do anything
2115 * behind our back. Also make sure that we
2116 * didn't "just" miss an interrupt that would
2119 was_paused
= ahd_is_paused(ahd
);
2120 ahd_pause_and_flushwork(ahd
);
2123 if ((pending_scb
->flags
& SCB_ACTIVE
) == 0) {
2124 scmd_printk(KERN_INFO
, cmd
, "Command already completed\n");
2128 printf("%s: At time of recovery, card was %spaused\n",
2129 ahd_name(ahd
), was_paused
? "" : "not ");
2130 ahd_dump_card_state(ahd
);
2132 disconnected
= TRUE
;
2133 if (ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2134 cmd
->device
->channel
+ 'A',
2136 pending_scb
->hscb
->tag
,
2137 ROLE_INITIATOR
, CAM_REQ_ABORTED
,
2138 SEARCH_COMPLETE
) > 0) {
2139 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
2140 ahd_name(ahd
), cmd
->device
->channel
,
2141 cmd
->device
->id
, cmd
->device
->lun
);
2146 saved_modes
= ahd_save_modes(ahd
);
2147 ahd_set_modes(ahd
, AHD_MODE_SCSI
, AHD_MODE_SCSI
);
2148 last_phase
= ahd_inb(ahd
, LASTPHASE
);
2149 saved_scbptr
= ahd_get_scbptr(ahd
);
2150 active_scbptr
= saved_scbptr
;
2151 if (disconnected
&& (ahd_inb(ahd
, SEQ_FLAGS
) & NOT_IDENTIFIED
) == 0) {
2152 struct scb
*bus_scb
;
2154 bus_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2155 if (bus_scb
== pending_scb
)
2156 disconnected
= FALSE
;
2160 * At this point, pending_scb is the scb associated with the
2161 * passed in command. That command is currently active on the
2162 * bus or is in the disconnected state.
2164 saved_scsiid
= ahd_inb(ahd
, SAVED_SCSIID
);
2165 if (last_phase
!= P_BUSFREE
2166 && SCB_GET_TAG(pending_scb
) == active_scbptr
) {
2169 * We're active on the bus, so assert ATN
2170 * and hope that the target responds.
2172 pending_scb
= ahd_lookup_scb(ahd
, active_scbptr
);
2173 pending_scb
->flags
|= SCB_RECOVERY_SCB
|SCB_ABORT
;
2174 ahd_outb(ahd
, MSG_OUT
, HOST_MSG
);
2175 ahd_outb(ahd
, SCSISIGO
, last_phase
|ATNO
);
2176 scmd_printk(KERN_INFO
, cmd
, "Device is active, asserting ATN\n");
2178 } else if (disconnected
) {
2181 * Actually re-queue this SCB in an attempt
2182 * to select the device before it reconnects.
2184 pending_scb
->flags
|= SCB_RECOVERY_SCB
|SCB_ABORT
;
2185 ahd_set_scbptr(ahd
, SCB_GET_TAG(pending_scb
));
2186 pending_scb
->hscb
->cdb_len
= 0;
2187 pending_scb
->hscb
->task_attribute
= 0;
2188 pending_scb
->hscb
->task_management
= SIU_TASKMGMT_ABORT_TASK
;
2190 if ((pending_scb
->flags
& SCB_PACKETIZED
) != 0) {
2192 * Mark the SCB has having an outstanding
2193 * task management function. Should the command
2194 * complete normally before the task management
2195 * function can be sent, the host will be notified
2196 * to abort our requeued SCB.
2198 ahd_outb(ahd
, SCB_TASK_MANAGEMENT
,
2199 pending_scb
->hscb
->task_management
);
2202 * If non-packetized, set the MK_MESSAGE control
2203 * bit indicating that we desire to send a message.
2204 * We also set the disconnected flag since there is
2205 * no guarantee that our SCB control byte matches
2206 * the version on the card. We don't want the
2207 * sequencer to abort the command thinking an
2208 * unsolicited reselection occurred.
2210 pending_scb
->hscb
->control
|= MK_MESSAGE
|DISCONNECTED
;
2213 * The sequencer will never re-reference the
2214 * in-core SCB. To make sure we are notified
2215 * during reslection, set the MK_MESSAGE flag in
2216 * the card's copy of the SCB.
2218 ahd_outb(ahd
, SCB_CONTROL
,
2219 ahd_inb(ahd
, SCB_CONTROL
)|MK_MESSAGE
);
2223 * Clear out any entries in the QINFIFO first
2224 * so we are the next SCB for this target
2227 ahd_search_qinfifo(ahd
, cmd
->device
->id
,
2228 cmd
->device
->channel
+ 'A', cmd
->device
->lun
,
2229 SCB_LIST_NULL
, ROLE_INITIATOR
,
2230 CAM_REQUEUE_REQ
, SEARCH_COMPLETE
);
2231 ahd_qinfifo_requeue_tail(ahd
, pending_scb
);
2232 ahd_set_scbptr(ahd
, saved_scbptr
);
2233 ahd_print_path(ahd
, pending_scb
);
2234 printf("Device is disconnected, re-queuing SCB\n");
2237 scmd_printk(KERN_INFO
, cmd
, "Unable to deliver message\n");
2244 * Our assumption is that if we don't have the command, no
2245 * recovery action was required, so we return success. Again,
2246 * the semantics of the mid-layer recovery engine are not
2247 * well defined, so this may change in time.
2254 DECLARE_COMPLETION_ONSTACK(done
);
2256 ahd
->platform_data
->eh_done
= &done
;
2257 ahd_unlock(ahd
, &flags
);
2259 printf("%s: Recovery code sleeping\n", ahd_name(ahd
));
2260 if (!wait_for_completion_timeout(&done
, 5 * HZ
)) {
2261 ahd_lock(ahd
, &flags
);
2262 ahd
->platform_data
->eh_done
= NULL
;
2263 ahd_unlock(ahd
, &flags
);
2264 printf("%s: Timer Expired (active %d)\n",
2265 ahd_name(ahd
), dev
->active
);
2268 printf("Recovery code awake\n");
2270 ahd_unlock(ahd
, &flags
);
2272 if (retval
!= SUCCESS
)
2273 printf("%s: Command abort returning 0x%x\n",
2274 ahd_name(ahd
), retval
);
2279 static void ahd_linux_set_width(struct scsi_target
*starget
, int width
)
2281 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2282 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2283 struct ahd_devinfo devinfo
;
2284 unsigned long flags
;
2286 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2287 starget
->channel
+ 'A', ROLE_INITIATOR
);
2288 ahd_lock(ahd
, &flags
);
2289 ahd_set_width(ahd
, &devinfo
, width
, AHD_TRANS_GOAL
, FALSE
);
2290 ahd_unlock(ahd
, &flags
);
2293 static void ahd_linux_set_period(struct scsi_target
*starget
, int period
)
2295 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2296 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2297 struct ahd_tmode_tstate
*tstate
;
2298 struct ahd_initiator_tinfo
*tinfo
2299 = ahd_fetch_transinfo(ahd
,
2300 starget
->channel
+ 'A',
2301 shost
->this_id
, starget
->id
, &tstate
);
2302 struct ahd_devinfo devinfo
;
2303 unsigned int ppr_options
= tinfo
->goal
.ppr_options
;
2305 unsigned long flags
;
2306 unsigned long offset
= tinfo
->goal
.offset
;
2309 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2310 printf("%s: set period to %d\n", ahd_name(ahd
), period
);
2313 offset
= MAX_OFFSET
;
2318 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2320 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2323 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2325 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2326 starget
->channel
+ 'A', ROLE_INITIATOR
);
2328 /* all PPR requests apart from QAS require wide transfers */
2329 if (ppr_options
& ~MSG_EXT_PPR_QAS_REQ
) {
2330 if (spi_width(starget
) == 0)
2331 ppr_options
&= MSG_EXT_PPR_QAS_REQ
;
2334 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2335 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2337 ahd_lock(ahd
, &flags
);
2338 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
,
2339 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2340 ahd_unlock(ahd
, &flags
);
2343 static void ahd_linux_set_offset(struct scsi_target
*starget
, int offset
)
2345 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2346 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2347 struct ahd_tmode_tstate
*tstate
;
2348 struct ahd_initiator_tinfo
*tinfo
2349 = ahd_fetch_transinfo(ahd
,
2350 starget
->channel
+ 'A',
2351 shost
->this_id
, starget
->id
, &tstate
);
2352 struct ahd_devinfo devinfo
;
2353 unsigned int ppr_options
= 0;
2354 unsigned int period
= 0;
2355 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2356 unsigned long flags
;
2359 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2360 printf("%s: set offset to %d\n", ahd_name(ahd
), offset
);
2363 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2364 starget
->channel
+ 'A', ROLE_INITIATOR
);
2366 period
= tinfo
->goal
.period
;
2367 ppr_options
= tinfo
->goal
.ppr_options
;
2368 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2369 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2372 ahd_lock(ahd
, &flags
);
2373 ahd_set_syncrate(ahd
, &devinfo
, period
, offset
, ppr_options
,
2374 AHD_TRANS_GOAL
, FALSE
);
2375 ahd_unlock(ahd
, &flags
);
2378 static void ahd_linux_set_dt(struct scsi_target
*starget
, int dt
)
2380 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2381 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2382 struct ahd_tmode_tstate
*tstate
;
2383 struct ahd_initiator_tinfo
*tinfo
2384 = ahd_fetch_transinfo(ahd
,
2385 starget
->channel
+ 'A',
2386 shost
->this_id
, starget
->id
, &tstate
);
2387 struct ahd_devinfo devinfo
;
2388 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2389 & ~MSG_EXT_PPR_DT_REQ
;
2390 unsigned int period
= tinfo
->goal
.period
;
2391 unsigned int width
= tinfo
->goal
.width
;
2392 unsigned long flags
;
2395 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2396 printf("%s: %s DT\n", ahd_name(ahd
),
2397 dt
? "enabling" : "disabling");
2400 ppr_options
|= MSG_EXT_PPR_DT_REQ
;
2402 ahd_linux_set_width(starget
, 1);
2405 period
= 10; /* If resetting DT, period must be >= 25ns */
2406 /* IU is invalid without DT set */
2407 ppr_options
&= ~MSG_EXT_PPR_IU_REQ
;
2409 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2410 starget
->channel
+ 'A', ROLE_INITIATOR
);
2411 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2412 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2414 ahd_lock(ahd
, &flags
);
2415 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2416 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2417 ahd_unlock(ahd
, &flags
);
2420 static void ahd_linux_set_qas(struct scsi_target
*starget
, int qas
)
2422 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2423 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2424 struct ahd_tmode_tstate
*tstate
;
2425 struct ahd_initiator_tinfo
*tinfo
2426 = ahd_fetch_transinfo(ahd
,
2427 starget
->channel
+ 'A',
2428 shost
->this_id
, starget
->id
, &tstate
);
2429 struct ahd_devinfo devinfo
;
2430 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2431 & ~MSG_EXT_PPR_QAS_REQ
;
2432 unsigned int period
= tinfo
->goal
.period
;
2434 unsigned long flags
;
2437 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2438 printf("%s: %s QAS\n", ahd_name(ahd
),
2439 qas
? "enabling" : "disabling");
2443 ppr_options
|= MSG_EXT_PPR_QAS_REQ
;
2446 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2448 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2449 starget
->channel
+ 'A', ROLE_INITIATOR
);
2450 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2451 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2453 ahd_lock(ahd
, &flags
);
2454 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2455 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2456 ahd_unlock(ahd
, &flags
);
2459 static void ahd_linux_set_iu(struct scsi_target
*starget
, int iu
)
2461 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2462 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2463 struct ahd_tmode_tstate
*tstate
;
2464 struct ahd_initiator_tinfo
*tinfo
2465 = ahd_fetch_transinfo(ahd
,
2466 starget
->channel
+ 'A',
2467 shost
->this_id
, starget
->id
, &tstate
);
2468 struct ahd_devinfo devinfo
;
2469 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2470 & ~MSG_EXT_PPR_IU_REQ
;
2471 unsigned int period
= tinfo
->goal
.period
;
2473 unsigned long flags
;
2476 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2477 printf("%s: %s IU\n", ahd_name(ahd
),
2478 iu
? "enabling" : "disabling");
2482 ppr_options
|= MSG_EXT_PPR_IU_REQ
;
2483 ppr_options
|= MSG_EXT_PPR_DT_REQ
; /* IU requires DT */
2486 dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2488 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2489 starget
->channel
+ 'A', ROLE_INITIATOR
);
2490 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2491 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2493 ahd_lock(ahd
, &flags
);
2494 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2495 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2496 ahd_unlock(ahd
, &flags
);
2499 static void ahd_linux_set_rd_strm(struct scsi_target
*starget
, int rdstrm
)
2501 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2502 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2503 struct ahd_tmode_tstate
*tstate
;
2504 struct ahd_initiator_tinfo
*tinfo
2505 = ahd_fetch_transinfo(ahd
,
2506 starget
->channel
+ 'A',
2507 shost
->this_id
, starget
->id
, &tstate
);
2508 struct ahd_devinfo devinfo
;
2509 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2510 & ~MSG_EXT_PPR_RD_STRM
;
2511 unsigned int period
= tinfo
->goal
.period
;
2512 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2513 unsigned long flags
;
2516 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2517 printf("%s: %s Read Streaming\n", ahd_name(ahd
),
2518 rdstrm
? "enabling" : "disabling");
2522 ppr_options
|= MSG_EXT_PPR_RD_STRM
;
2524 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2525 starget
->channel
+ 'A', ROLE_INITIATOR
);
2526 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2527 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2529 ahd_lock(ahd
, &flags
);
2530 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2531 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2532 ahd_unlock(ahd
, &flags
);
2535 static void ahd_linux_set_wr_flow(struct scsi_target
*starget
, int wrflow
)
2537 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2538 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2539 struct ahd_tmode_tstate
*tstate
;
2540 struct ahd_initiator_tinfo
*tinfo
2541 = ahd_fetch_transinfo(ahd
,
2542 starget
->channel
+ 'A',
2543 shost
->this_id
, starget
->id
, &tstate
);
2544 struct ahd_devinfo devinfo
;
2545 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2546 & ~MSG_EXT_PPR_WR_FLOW
;
2547 unsigned int period
= tinfo
->goal
.period
;
2548 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2549 unsigned long flags
;
2552 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2553 printf("%s: %s Write Flow Control\n", ahd_name(ahd
),
2554 wrflow
? "enabling" : "disabling");
2558 ppr_options
|= MSG_EXT_PPR_WR_FLOW
;
2560 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2561 starget
->channel
+ 'A', ROLE_INITIATOR
);
2562 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2563 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2565 ahd_lock(ahd
, &flags
);
2566 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2567 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2568 ahd_unlock(ahd
, &flags
);
2571 static void ahd_linux_set_rti(struct scsi_target
*starget
, int rti
)
2573 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2574 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2575 struct ahd_tmode_tstate
*tstate
;
2576 struct ahd_initiator_tinfo
*tinfo
2577 = ahd_fetch_transinfo(ahd
,
2578 starget
->channel
+ 'A',
2579 shost
->this_id
, starget
->id
, &tstate
);
2580 struct ahd_devinfo devinfo
;
2581 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2583 unsigned int period
= tinfo
->goal
.period
;
2584 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2585 unsigned long flags
;
2587 if ((ahd
->features
& AHD_RTI
) == 0) {
2589 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2590 printf("%s: RTI not available\n", ahd_name(ahd
));
2596 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2597 printf("%s: %s RTI\n", ahd_name(ahd
),
2598 rti
? "enabling" : "disabling");
2602 ppr_options
|= MSG_EXT_PPR_RTI
;
2604 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2605 starget
->channel
+ 'A', ROLE_INITIATOR
);
2606 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2607 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2609 ahd_lock(ahd
, &flags
);
2610 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2611 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2612 ahd_unlock(ahd
, &flags
);
2615 static void ahd_linux_set_pcomp_en(struct scsi_target
*starget
, int pcomp
)
2617 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2618 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2619 struct ahd_tmode_tstate
*tstate
;
2620 struct ahd_initiator_tinfo
*tinfo
2621 = ahd_fetch_transinfo(ahd
,
2622 starget
->channel
+ 'A',
2623 shost
->this_id
, starget
->id
, &tstate
);
2624 struct ahd_devinfo devinfo
;
2625 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2626 & ~MSG_EXT_PPR_PCOMP_EN
;
2627 unsigned int period
= tinfo
->goal
.period
;
2628 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2629 unsigned long flags
;
2632 if ((ahd_debug
& AHD_SHOW_DV
) != 0)
2633 printf("%s: %s Precompensation\n", ahd_name(ahd
),
2634 pcomp
? "Enable" : "Disable");
2638 ppr_options
|= MSG_EXT_PPR_PCOMP_EN
;
2640 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2641 starget
->channel
+ 'A', ROLE_INITIATOR
);
2642 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2643 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2645 ahd_lock(ahd
, &flags
);
2646 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2647 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2648 ahd_unlock(ahd
, &flags
);
2651 static void ahd_linux_set_hold_mcs(struct scsi_target
*starget
, int hold
)
2653 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2654 struct ahd_softc
*ahd
= *((struct ahd_softc
**)shost
->hostdata
);
2655 struct ahd_tmode_tstate
*tstate
;
2656 struct ahd_initiator_tinfo
*tinfo
2657 = ahd_fetch_transinfo(ahd
,
2658 starget
->channel
+ 'A',
2659 shost
->this_id
, starget
->id
, &tstate
);
2660 struct ahd_devinfo devinfo
;
2661 unsigned int ppr_options
= tinfo
->goal
.ppr_options
2662 & ~MSG_EXT_PPR_HOLD_MCS
;
2663 unsigned int period
= tinfo
->goal
.period
;
2664 unsigned int dt
= ppr_options
& MSG_EXT_PPR_DT_REQ
;
2665 unsigned long flags
;
2668 ppr_options
|= MSG_EXT_PPR_HOLD_MCS
;
2670 ahd_compile_devinfo(&devinfo
, shost
->this_id
, starget
->id
, 0,
2671 starget
->channel
+ 'A', ROLE_INITIATOR
);
2672 ahd_find_syncrate(ahd
, &period
, &ppr_options
,
2673 dt
? AHD_SYNCRATE_MAX
: AHD_SYNCRATE_ULTRA2
);
2675 ahd_lock(ahd
, &flags
);
2676 ahd_set_syncrate(ahd
, &devinfo
, period
, tinfo
->goal
.offset
,
2677 ppr_options
, AHD_TRANS_GOAL
, FALSE
);
2678 ahd_unlock(ahd
, &flags
);
2683 static struct spi_function_template ahd_linux_transport_functions
= {
2684 .set_offset
= ahd_linux_set_offset
,
2686 .set_period
= ahd_linux_set_period
,
2688 .set_width
= ahd_linux_set_width
,
2690 .set_dt
= ahd_linux_set_dt
,
2692 .set_iu
= ahd_linux_set_iu
,
2694 .set_qas
= ahd_linux_set_qas
,
2696 .set_rd_strm
= ahd_linux_set_rd_strm
,
2698 .set_wr_flow
= ahd_linux_set_wr_flow
,
2700 .set_rti
= ahd_linux_set_rti
,
2702 .set_pcomp_en
= ahd_linux_set_pcomp_en
,
2704 .set_hold_mcs
= ahd_linux_set_hold_mcs
,
2709 ahd_linux_init(void)
2714 * If we've been passed any parameters, process them now.
2717 aic79xx_setup(aic79xx
);
2719 ahd_linux_transport_template
=
2720 spi_attach_transport(&ahd_linux_transport_functions
);
2721 if (!ahd_linux_transport_template
)
2724 scsi_transport_reserve_device(ahd_linux_transport_template
,
2725 sizeof(struct ahd_linux_device
));
2727 error
= ahd_linux_pci_init();
2729 spi_release_transport(ahd_linux_transport_template
);
2734 ahd_linux_exit(void)
2736 ahd_linux_pci_exit();
2737 spi_release_transport(ahd_linux_transport_template
);
2740 module_init(ahd_linux_init
);
2741 module_exit(ahd_linux_exit
);