2 * SBP2 driver (SCSI over IEEE1394)
4 * Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 * The basic structure of this driver is based on the old storage driver,
23 * drivers/ieee1394/sbp2.c, originally written by
24 * James Goodwin <jamesg@filanet.com>
25 * with later contributions and ongoing maintenance from
26 * Ben Collins <bcollins@debian.org>,
27 * Stefan Richter <stefanr@s5r6.in-berlin.de>
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/moduleparam.h>
34 #include <linux/mod_devicetable.h>
35 #include <linux/device.h>
36 #include <linux/scatterlist.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/blkdev.h>
39 #include <linux/string.h>
40 #include <linux/stringify.h>
41 #include <linux/timer.h>
42 #include <linux/workqueue.h>
43 #include <asm/system.h>
45 #include <scsi/scsi.h>
46 #include <scsi/scsi_cmnd.h>
47 #include <scsi/scsi_device.h>
48 #include <scsi/scsi_host.h>
50 #include "fw-transaction.h"
51 #include "fw-topology.h"
52 #include "fw-device.h"
55 * So far only bridges from Oxford Semiconductor are known to support
56 * concurrent logins. Depending on firmware, four or two concurrent logins
57 * are possible on OXFW911 and newer Oxsemi bridges.
59 * Concurrent logins are useful together with cluster filesystems.
61 static int sbp2_param_exclusive_login
= 1;
62 module_param_named(exclusive_login
, sbp2_param_exclusive_login
, bool, 0644);
63 MODULE_PARM_DESC(exclusive_login
, "Exclusive login to sbp2 device "
64 "(default = Y, use N for concurrent initiators)");
67 * Flags for firmware oddities
69 * - 128kB max transfer
70 * Limit transfer size. Necessary for some old bridges.
73 * When scsi_mod probes the device, let the inquiry command look like that
77 * Suppress sending of mode_sense for mode page 8 if the device pretends to
78 * support the SCSI Primary Block commands instead of Reduced Block Commands.
81 * Tell sd_mod to correct the last sector number reported by read_capacity.
82 * Avoids access beyond actual disk limits on devices with an off-by-one bug.
83 * Don't use this with devices which don't have this bug.
85 * - override internal blacklist
86 * Instead of adding to the built-in blacklist, use only the workarounds
87 * specified in the module load parameter.
88 * Useful if a blacklist entry interfered with a non-broken device.
90 #define SBP2_WORKAROUND_128K_MAX_TRANS 0x1
91 #define SBP2_WORKAROUND_INQUIRY_36 0x2
92 #define SBP2_WORKAROUND_MODE_SENSE_8 0x4
93 #define SBP2_WORKAROUND_FIX_CAPACITY 0x8
94 #define SBP2_WORKAROUND_OVERRIDE 0x100
96 static int sbp2_param_workarounds
;
97 module_param_named(workarounds
, sbp2_param_workarounds
, int, 0644);
98 MODULE_PARM_DESC(workarounds
, "Work around device bugs (default = 0"
99 ", 128kB max transfer = " __stringify(SBP2_WORKAROUND_128K_MAX_TRANS
)
100 ", 36 byte inquiry = " __stringify(SBP2_WORKAROUND_INQUIRY_36
)
101 ", skip mode page 8 = " __stringify(SBP2_WORKAROUND_MODE_SENSE_8
)
102 ", fix capacity = " __stringify(SBP2_WORKAROUND_FIX_CAPACITY
)
103 ", override internal blacklist = " __stringify(SBP2_WORKAROUND_OVERRIDE
)
104 ", or a combination)");
106 /* I don't know why the SCSI stack doesn't define something like this... */
107 typedef void (*scsi_done_fn_t
)(struct scsi_cmnd
*);
109 static const char sbp2_driver_name
[] = "sbp2";
112 * We create one struct sbp2_logical_unit per SBP-2 Logical Unit Number Entry
113 * and one struct scsi_device per sbp2_logical_unit.
115 struct sbp2_logical_unit
{
116 struct sbp2_target
*tgt
;
117 struct list_head link
;
118 struct scsi_device
*sdev
;
119 struct fw_address_handler address_handler
;
120 struct list_head orb_list
;
122 u64 command_block_agent_address
;
127 * The generation is updated once we've logged in or reconnected
128 * to the logical unit. Thus, I/O to the device will automatically
129 * fail and get retried if it happens in a window where the device
130 * is not ready, e.g. after a bus reset but before we reconnect.
134 struct delayed_work work
;
138 * We create one struct sbp2_target per IEEE 1212 Unit Directory
139 * and one struct Scsi_Host per sbp2_target.
143 struct fw_unit
*unit
;
144 struct list_head lu_list
;
146 u64 management_agent_address
;
150 unsigned int workarounds
;
151 unsigned int mgt_orb_timeout
;
155 * Per section 7.4.8 of the SBP-2 spec, a mgt_ORB_timeout value can be
156 * provided in the config rom. Most devices do provide a value, which
157 * we'll use for login management orbs, but with some sane limits.
159 #define SBP2_MIN_LOGIN_ORB_TIMEOUT 5000U /* Timeout in ms */
160 #define SBP2_MAX_LOGIN_ORB_TIMEOUT 40000U /* Timeout in ms */
161 #define SBP2_ORB_TIMEOUT 2000U /* Timeout in ms */
162 #define SBP2_ORB_NULL 0x80000000
163 #define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
165 #define SBP2_DIRECTION_TO_MEDIA 0x0
166 #define SBP2_DIRECTION_FROM_MEDIA 0x1
168 /* Unit directory keys */
169 #define SBP2_CSR_UNIT_CHARACTERISTICS 0x3a
170 #define SBP2_CSR_FIRMWARE_REVISION 0x3c
171 #define SBP2_CSR_LOGICAL_UNIT_NUMBER 0x14
172 #define SBP2_CSR_LOGICAL_UNIT_DIRECTORY 0xd4
174 /* Management orb opcodes */
175 #define SBP2_LOGIN_REQUEST 0x0
176 #define SBP2_QUERY_LOGINS_REQUEST 0x1
177 #define SBP2_RECONNECT_REQUEST 0x3
178 #define SBP2_SET_PASSWORD_REQUEST 0x4
179 #define SBP2_LOGOUT_REQUEST 0x7
180 #define SBP2_ABORT_TASK_REQUEST 0xb
181 #define SBP2_ABORT_TASK_SET 0xc
182 #define SBP2_LOGICAL_UNIT_RESET 0xe
183 #define SBP2_TARGET_RESET_REQUEST 0xf
185 /* Offsets for command block agent registers */
186 #define SBP2_AGENT_STATE 0x00
187 #define SBP2_AGENT_RESET 0x04
188 #define SBP2_ORB_POINTER 0x08
189 #define SBP2_DOORBELL 0x10
190 #define SBP2_UNSOLICITED_STATUS_ENABLE 0x14
192 /* Status write response codes */
193 #define SBP2_STATUS_REQUEST_COMPLETE 0x0
194 #define SBP2_STATUS_TRANSPORT_FAILURE 0x1
195 #define SBP2_STATUS_ILLEGAL_REQUEST 0x2
196 #define SBP2_STATUS_VENDOR_DEPENDENT 0x3
198 #define STATUS_GET_ORB_HIGH(v) ((v).status & 0xffff)
199 #define STATUS_GET_SBP_STATUS(v) (((v).status >> 16) & 0xff)
200 #define STATUS_GET_LEN(v) (((v).status >> 24) & 0x07)
201 #define STATUS_GET_DEAD(v) (((v).status >> 27) & 0x01)
202 #define STATUS_GET_RESPONSE(v) (((v).status >> 28) & 0x03)
203 #define STATUS_GET_SOURCE(v) (((v).status >> 30) & 0x03)
204 #define STATUS_GET_ORB_LOW(v) ((v).orb_low)
205 #define STATUS_GET_DATA(v) ((v).data)
213 struct sbp2_pointer
{
219 struct fw_transaction t
;
221 dma_addr_t request_bus
;
223 struct sbp2_pointer pointer
;
224 void (*callback
)(struct sbp2_orb
* orb
, struct sbp2_status
* status
);
225 struct list_head link
;
228 #define MANAGEMENT_ORB_LUN(v) ((v))
229 #define MANAGEMENT_ORB_FUNCTION(v) ((v) << 16)
230 #define MANAGEMENT_ORB_RECONNECT(v) ((v) << 20)
231 #define MANAGEMENT_ORB_EXCLUSIVE(v) ((v) ? 1 << 28 : 0)
232 #define MANAGEMENT_ORB_REQUEST_FORMAT(v) ((v) << 29)
233 #define MANAGEMENT_ORB_NOTIFY ((1) << 31)
235 #define MANAGEMENT_ORB_RESPONSE_LENGTH(v) ((v))
236 #define MANAGEMENT_ORB_PASSWORD_LENGTH(v) ((v) << 16)
238 struct sbp2_management_orb
{
239 struct sbp2_orb base
;
241 struct sbp2_pointer password
;
242 struct sbp2_pointer response
;
245 struct sbp2_pointer status_fifo
;
248 dma_addr_t response_bus
;
249 struct completion done
;
250 struct sbp2_status status
;
253 #define LOGIN_RESPONSE_GET_LOGIN_ID(v) ((v).misc & 0xffff)
254 #define LOGIN_RESPONSE_GET_LENGTH(v) (((v).misc >> 16) & 0xffff)
256 struct sbp2_login_response
{
258 struct sbp2_pointer command_block_agent
;
261 #define COMMAND_ORB_DATA_SIZE(v) ((v))
262 #define COMMAND_ORB_PAGE_SIZE(v) ((v) << 16)
263 #define COMMAND_ORB_PAGE_TABLE_PRESENT ((1) << 19)
264 #define COMMAND_ORB_MAX_PAYLOAD(v) ((v) << 20)
265 #define COMMAND_ORB_SPEED(v) ((v) << 24)
266 #define COMMAND_ORB_DIRECTION(v) ((v) << 27)
267 #define COMMAND_ORB_REQUEST_FORMAT(v) ((v) << 29)
268 #define COMMAND_ORB_NOTIFY ((1) << 31)
270 struct sbp2_command_orb
{
271 struct sbp2_orb base
;
273 struct sbp2_pointer next
;
274 struct sbp2_pointer data_descriptor
;
276 u8 command_block
[12];
278 struct scsi_cmnd
*cmd
;
280 struct sbp2_logical_unit
*lu
;
282 struct sbp2_pointer page_table
[SG_ALL
] __attribute__((aligned(8)));
283 dma_addr_t page_table_bus
;
287 * List of devices with known bugs.
289 * The firmware_revision field, masked with 0xffff00, is the best
290 * indicator for the type of bridge chip of a device. It yields a few
291 * false positives but this did not break correctly behaving devices
292 * so far. We use ~0 as a wildcard, since the 24 bit values we get
293 * from the config rom can never match that.
295 static const struct {
296 u32 firmware_revision
;
298 unsigned int workarounds
;
299 } sbp2_workarounds_table
[] = {
300 /* DViCO Momobay CX-1 with TSB42AA9 bridge */ {
301 .firmware_revision
= 0x002800,
303 .workarounds
= SBP2_WORKAROUND_INQUIRY_36
|
304 SBP2_WORKAROUND_MODE_SENSE_8
,
306 /* Initio bridges, actually only needed for some older ones */ {
307 .firmware_revision
= 0x000200,
309 .workarounds
= SBP2_WORKAROUND_INQUIRY_36
,
311 /* Symbios bridge */ {
312 .firmware_revision
= 0xa0b800,
314 .workarounds
= SBP2_WORKAROUND_128K_MAX_TRANS
,
318 * There are iPods (2nd gen, 3rd gen) with model_id == 0, but
319 * these iPods do not feature the read_capacity bug according
320 * to one report. Read_capacity behaviour as well as model_id
321 * could change due to Apple-supplied firmware updates though.
324 /* iPod 4th generation. */ {
325 .firmware_revision
= 0x0a2700,
327 .workarounds
= SBP2_WORKAROUND_FIX_CAPACITY
,
330 .firmware_revision
= 0x0a2700,
332 .workarounds
= SBP2_WORKAROUND_FIX_CAPACITY
,
335 .firmware_revision
= 0x0a2700,
337 .workarounds
= SBP2_WORKAROUND_FIX_CAPACITY
,
342 free_orb(struct kref
*kref
)
344 struct sbp2_orb
*orb
= container_of(kref
, struct sbp2_orb
, kref
);
350 sbp2_status_write(struct fw_card
*card
, struct fw_request
*request
,
351 int tcode
, int destination
, int source
,
352 int generation
, int speed
,
353 unsigned long long offset
,
354 void *payload
, size_t length
, void *callback_data
)
356 struct sbp2_logical_unit
*lu
= callback_data
;
357 struct sbp2_orb
*orb
;
358 struct sbp2_status status
;
362 if (tcode
!= TCODE_WRITE_BLOCK_REQUEST
||
363 length
== 0 || length
> sizeof(status
)) {
364 fw_send_response(card
, request
, RCODE_TYPE_ERROR
);
368 header_size
= min(length
, 2 * sizeof(u32
));
369 fw_memcpy_from_be32(&status
, payload
, header_size
);
370 if (length
> header_size
)
371 memcpy(status
.data
, payload
+ 8, length
- header_size
);
372 if (STATUS_GET_SOURCE(status
) == 2 || STATUS_GET_SOURCE(status
) == 3) {
373 fw_notify("non-orb related status write, not handled\n");
374 fw_send_response(card
, request
, RCODE_COMPLETE
);
378 /* Lookup the orb corresponding to this status write. */
379 spin_lock_irqsave(&card
->lock
, flags
);
380 list_for_each_entry(orb
, &lu
->orb_list
, link
) {
381 if (STATUS_GET_ORB_HIGH(status
) == 0 &&
382 STATUS_GET_ORB_LOW(status
) == orb
->request_bus
) {
383 orb
->rcode
= RCODE_COMPLETE
;
384 list_del(&orb
->link
);
388 spin_unlock_irqrestore(&card
->lock
, flags
);
390 if (&orb
->link
!= &lu
->orb_list
)
391 orb
->callback(orb
, &status
);
393 fw_error("status write for unknown orb\n");
395 kref_put(&orb
->kref
, free_orb
);
397 fw_send_response(card
, request
, RCODE_COMPLETE
);
401 complete_transaction(struct fw_card
*card
, int rcode
,
402 void *payload
, size_t length
, void *data
)
404 struct sbp2_orb
*orb
= data
;
408 * This is a little tricky. We can get the status write for
409 * the orb before we get this callback. The status write
410 * handler above will assume the orb pointer transaction was
411 * successful and set the rcode to RCODE_COMPLETE for the orb.
412 * So this callback only sets the rcode if it hasn't already
413 * been set and only does the cleanup if the transaction
414 * failed and we didn't already get a status write.
416 spin_lock_irqsave(&card
->lock
, flags
);
418 if (orb
->rcode
== -1)
420 if (orb
->rcode
!= RCODE_COMPLETE
) {
421 list_del(&orb
->link
);
422 spin_unlock_irqrestore(&card
->lock
, flags
);
423 orb
->callback(orb
, NULL
);
425 spin_unlock_irqrestore(&card
->lock
, flags
);
428 kref_put(&orb
->kref
, free_orb
);
432 sbp2_send_orb(struct sbp2_orb
*orb
, struct sbp2_logical_unit
*lu
,
433 int node_id
, int generation
, u64 offset
)
435 struct fw_device
*device
= fw_device(lu
->tgt
->unit
->device
.parent
);
438 orb
->pointer
.high
= 0;
439 orb
->pointer
.low
= orb
->request_bus
;
440 fw_memcpy_to_be32(&orb
->pointer
, &orb
->pointer
, sizeof(orb
->pointer
));
442 spin_lock_irqsave(&device
->card
->lock
, flags
);
443 list_add_tail(&orb
->link
, &lu
->orb_list
);
444 spin_unlock_irqrestore(&device
->card
->lock
, flags
);
446 /* Take a ref for the orb list and for the transaction callback. */
447 kref_get(&orb
->kref
);
448 kref_get(&orb
->kref
);
450 fw_send_request(device
->card
, &orb
->t
, TCODE_WRITE_BLOCK_REQUEST
,
451 node_id
, generation
, device
->max_speed
, offset
,
452 &orb
->pointer
, sizeof(orb
->pointer
),
453 complete_transaction
, orb
);
456 static int sbp2_cancel_orbs(struct sbp2_logical_unit
*lu
)
458 struct fw_device
*device
= fw_device(lu
->tgt
->unit
->device
.parent
);
459 struct sbp2_orb
*orb
, *next
;
460 struct list_head list
;
462 int retval
= -ENOENT
;
464 INIT_LIST_HEAD(&list
);
465 spin_lock_irqsave(&device
->card
->lock
, flags
);
466 list_splice_init(&lu
->orb_list
, &list
);
467 spin_unlock_irqrestore(&device
->card
->lock
, flags
);
469 list_for_each_entry_safe(orb
, next
, &list
, link
) {
471 if (fw_cancel_transaction(device
->card
, &orb
->t
) == 0)
474 orb
->rcode
= RCODE_CANCELLED
;
475 orb
->callback(orb
, NULL
);
482 complete_management_orb(struct sbp2_orb
*base_orb
, struct sbp2_status
*status
)
484 struct sbp2_management_orb
*orb
=
485 container_of(base_orb
, struct sbp2_management_orb
, base
);
488 memcpy(&orb
->status
, status
, sizeof(*status
));
489 complete(&orb
->done
);
493 sbp2_send_management_orb(struct sbp2_logical_unit
*lu
, int node_id
,
494 int generation
, int function
, int lun_or_login_id
,
497 struct fw_device
*device
= fw_device(lu
->tgt
->unit
->device
.parent
);
498 struct sbp2_management_orb
*orb
;
499 unsigned int timeout
;
500 int retval
= -ENOMEM
;
502 if (function
== SBP2_LOGOUT_REQUEST
&& fw_device_is_shutdown(device
))
505 orb
= kzalloc(sizeof(*orb
), GFP_ATOMIC
);
509 kref_init(&orb
->base
.kref
);
511 dma_map_single(device
->card
->device
, &orb
->response
,
512 sizeof(orb
->response
), DMA_FROM_DEVICE
);
513 if (dma_mapping_error(orb
->response_bus
))
514 goto fail_mapping_response
;
516 orb
->request
.response
.high
= 0;
517 orb
->request
.response
.low
= orb
->response_bus
;
520 MANAGEMENT_ORB_NOTIFY
|
521 MANAGEMENT_ORB_FUNCTION(function
) |
522 MANAGEMENT_ORB_LUN(lun_or_login_id
);
523 orb
->request
.length
=
524 MANAGEMENT_ORB_RESPONSE_LENGTH(sizeof(orb
->response
));
526 orb
->request
.status_fifo
.high
= lu
->address_handler
.offset
>> 32;
527 orb
->request
.status_fifo
.low
= lu
->address_handler
.offset
;
529 if (function
== SBP2_LOGIN_REQUEST
) {
530 /* Ask for 2^2 == 4 seconds reconnect grace period */
532 MANAGEMENT_ORB_RECONNECT(2) |
533 MANAGEMENT_ORB_EXCLUSIVE(sbp2_param_exclusive_login
);
534 timeout
= lu
->tgt
->mgt_orb_timeout
;
536 timeout
= SBP2_ORB_TIMEOUT
;
539 fw_memcpy_to_be32(&orb
->request
, &orb
->request
, sizeof(orb
->request
));
541 init_completion(&orb
->done
);
542 orb
->base
.callback
= complete_management_orb
;
544 orb
->base
.request_bus
=
545 dma_map_single(device
->card
->device
, &orb
->request
,
546 sizeof(orb
->request
), DMA_TO_DEVICE
);
547 if (dma_mapping_error(orb
->base
.request_bus
))
548 goto fail_mapping_request
;
550 sbp2_send_orb(&orb
->base
, lu
, node_id
, generation
,
551 lu
->tgt
->management_agent_address
);
553 wait_for_completion_timeout(&orb
->done
, msecs_to_jiffies(timeout
));
556 if (sbp2_cancel_orbs(lu
) == 0) {
557 fw_error("orb reply timed out, rcode=0x%02x\n",
562 if (orb
->base
.rcode
!= RCODE_COMPLETE
) {
563 fw_error("management write failed, rcode 0x%02x\n",
568 if (STATUS_GET_RESPONSE(orb
->status
) != 0 ||
569 STATUS_GET_SBP_STATUS(orb
->status
) != 0) {
570 fw_error("error status: %d:%d\n",
571 STATUS_GET_RESPONSE(orb
->status
),
572 STATUS_GET_SBP_STATUS(orb
->status
));
578 dma_unmap_single(device
->card
->device
, orb
->base
.request_bus
,
579 sizeof(orb
->request
), DMA_TO_DEVICE
);
580 fail_mapping_request
:
581 dma_unmap_single(device
->card
->device
, orb
->response_bus
,
582 sizeof(orb
->response
), DMA_FROM_DEVICE
);
583 fail_mapping_response
:
585 fw_memcpy_from_be32(response
,
586 orb
->response
, sizeof(orb
->response
));
587 kref_put(&orb
->base
.kref
, free_orb
);
593 complete_agent_reset_write(struct fw_card
*card
, int rcode
,
594 void *payload
, size_t length
, void *data
)
596 struct fw_transaction
*t
= data
;
601 static int sbp2_agent_reset(struct sbp2_logical_unit
*lu
)
603 struct fw_device
*device
= fw_device(lu
->tgt
->unit
->device
.parent
);
604 struct fw_transaction
*t
;
607 t
= kzalloc(sizeof(*t
), GFP_ATOMIC
);
611 fw_send_request(device
->card
, t
, TCODE_WRITE_QUADLET_REQUEST
,
612 lu
->tgt
->node_id
, lu
->generation
, device
->max_speed
,
613 lu
->command_block_agent_address
+ SBP2_AGENT_RESET
,
614 &zero
, sizeof(zero
), complete_agent_reset_write
, t
);
619 static void sbp2_release_target(struct kref
*kref
)
621 struct sbp2_target
*tgt
= container_of(kref
, struct sbp2_target
, kref
);
622 struct sbp2_logical_unit
*lu
, *next
;
623 struct Scsi_Host
*shost
=
624 container_of((void *)tgt
, struct Scsi_Host
, hostdata
[0]);
626 list_for_each_entry_safe(lu
, next
, &tgt
->lu_list
, link
) {
628 scsi_remove_device(lu
->sdev
);
630 sbp2_send_management_orb(lu
, tgt
->node_id
, lu
->generation
,
631 SBP2_LOGOUT_REQUEST
, lu
->login_id
, NULL
);
633 fw_core_remove_address_handler(&lu
->address_handler
);
637 scsi_remove_host(shost
);
638 fw_notify("released %s\n", tgt
->unit
->device
.bus_id
);
640 put_device(&tgt
->unit
->device
);
641 scsi_host_put(shost
);
644 static struct workqueue_struct
*sbp2_wq
;
647 * Always get the target's kref when scheduling work on one its units.
648 * Each workqueue job is responsible to call sbp2_target_put() upon return.
650 static void sbp2_queue_work(struct sbp2_logical_unit
*lu
, unsigned long delay
)
652 if (queue_delayed_work(sbp2_wq
, &lu
->work
, delay
))
653 kref_get(&lu
->tgt
->kref
);
656 static void sbp2_target_put(struct sbp2_target
*tgt
)
658 kref_put(&tgt
->kref
, sbp2_release_target
);
661 static void sbp2_reconnect(struct work_struct
*work
);
663 static void sbp2_login(struct work_struct
*work
)
665 struct sbp2_logical_unit
*lu
=
666 container_of(work
, struct sbp2_logical_unit
, work
.work
);
667 struct Scsi_Host
*shost
=
668 container_of((void *)lu
->tgt
, struct Scsi_Host
, hostdata
[0]);
669 struct scsi_device
*sdev
;
670 struct scsi_lun eight_bytes_lun
;
671 struct fw_unit
*unit
= lu
->tgt
->unit
;
672 struct fw_device
*device
= fw_device(unit
->device
.parent
);
673 struct sbp2_login_response response
;
674 int generation
, node_id
, local_node_id
;
676 if (fw_device_is_shutdown(device
))
679 generation
= device
->generation
;
680 smp_rmb(); /* node_id must not be older than generation */
681 node_id
= device
->node_id
;
682 local_node_id
= device
->card
->node_id
;
684 if (sbp2_send_management_orb(lu
, node_id
, generation
,
685 SBP2_LOGIN_REQUEST
, lu
->lun
, &response
) < 0) {
686 if (lu
->retries
++ < 5)
687 sbp2_queue_work(lu
, DIV_ROUND_UP(HZ
, 5));
689 fw_error("failed to login to %s LUN %04x\n",
690 unit
->device
.bus_id
, lu
->lun
);
694 lu
->generation
= generation
;
695 lu
->tgt
->node_id
= node_id
;
696 lu
->tgt
->address_high
= local_node_id
<< 16;
698 /* Get command block agent offset and login id. */
699 lu
->command_block_agent_address
=
700 ((u64
) (response
.command_block_agent
.high
& 0xffff) << 32) |
701 response
.command_block_agent
.low
;
702 lu
->login_id
= LOGIN_RESPONSE_GET_LOGIN_ID(response
);
704 fw_notify("logged in to %s LUN %04x (%d retries)\n",
705 unit
->device
.bus_id
, lu
->lun
, lu
->retries
);
708 /* FIXME: The linux1394 sbp2 does this last step. */
709 sbp2_set_busy_timeout(scsi_id
);
712 PREPARE_DELAYED_WORK(&lu
->work
, sbp2_reconnect
);
713 sbp2_agent_reset(lu
);
715 memset(&eight_bytes_lun
, 0, sizeof(eight_bytes_lun
));
716 eight_bytes_lun
.scsi_lun
[0] = (lu
->lun
>> 8) & 0xff;
717 eight_bytes_lun
.scsi_lun
[1] = lu
->lun
& 0xff;
719 sdev
= __scsi_add_device(shost
, 0, 0,
720 scsilun_to_int(&eight_bytes_lun
), lu
);
722 smp_rmb(); /* generation may have changed */
723 generation
= device
->generation
;
724 smp_rmb(); /* node_id must not be older than generation */
726 sbp2_send_management_orb(lu
, device
->node_id
, generation
,
727 SBP2_LOGOUT_REQUEST
, lu
->login_id
, NULL
);
729 * Set this back to sbp2_login so we fall back and
730 * retry login on bus reset.
732 PREPARE_DELAYED_WORK(&lu
->work
, sbp2_login
);
735 scsi_device_put(sdev
);
738 sbp2_target_put(lu
->tgt
);
741 static int sbp2_add_logical_unit(struct sbp2_target
*tgt
, int lun_entry
)
743 struct sbp2_logical_unit
*lu
;
745 lu
= kmalloc(sizeof(*lu
), GFP_KERNEL
);
749 lu
->address_handler
.length
= 0x100;
750 lu
->address_handler
.address_callback
= sbp2_status_write
;
751 lu
->address_handler
.callback_data
= lu
;
753 if (fw_core_add_address_handler(&lu
->address_handler
,
754 &fw_high_memory_region
) < 0) {
761 lu
->lun
= lun_entry
& 0xffff;
763 INIT_LIST_HEAD(&lu
->orb_list
);
764 INIT_DELAYED_WORK(&lu
->work
, sbp2_login
);
766 list_add_tail(&lu
->link
, &tgt
->lu_list
);
770 static int sbp2_scan_logical_unit_dir(struct sbp2_target
*tgt
, u32
*directory
)
772 struct fw_csr_iterator ci
;
775 fw_csr_iterator_init(&ci
, directory
);
776 while (fw_csr_iterator_next(&ci
, &key
, &value
))
777 if (key
== SBP2_CSR_LOGICAL_UNIT_NUMBER
&&
778 sbp2_add_logical_unit(tgt
, value
) < 0)
783 static int sbp2_scan_unit_dir(struct sbp2_target
*tgt
, u32
*directory
,
784 u32
*model
, u32
*firmware_revision
)
786 struct fw_csr_iterator ci
;
788 unsigned int timeout
;
790 fw_csr_iterator_init(&ci
, directory
);
791 while (fw_csr_iterator_next(&ci
, &key
, &value
)) {
794 case CSR_DEPENDENT_INFO
| CSR_OFFSET
:
795 tgt
->management_agent_address
=
796 CSR_REGISTER_BASE
+ 4 * value
;
799 case CSR_DIRECTORY_ID
:
800 tgt
->directory_id
= value
;
807 case SBP2_CSR_FIRMWARE_REVISION
:
808 *firmware_revision
= value
;
811 case SBP2_CSR_UNIT_CHARACTERISTICS
:
812 /* the timeout value is stored in 500ms units */
813 timeout
= ((unsigned int) value
>> 8 & 0xff) * 500;
814 timeout
= max(timeout
, SBP2_MIN_LOGIN_ORB_TIMEOUT
);
815 tgt
->mgt_orb_timeout
=
816 min(timeout
, SBP2_MAX_LOGIN_ORB_TIMEOUT
);
818 if (timeout
> tgt
->mgt_orb_timeout
)
819 fw_notify("%s: config rom contains %ds "
820 "management ORB timeout, limiting "
821 "to %ds\n", tgt
->unit
->device
.bus_id
,
823 tgt
->mgt_orb_timeout
/ 1000);
826 case SBP2_CSR_LOGICAL_UNIT_NUMBER
:
827 if (sbp2_add_logical_unit(tgt
, value
) < 0)
831 case SBP2_CSR_LOGICAL_UNIT_DIRECTORY
:
832 if (sbp2_scan_logical_unit_dir(tgt
, ci
.p
+ value
) < 0)
840 static void sbp2_init_workarounds(struct sbp2_target
*tgt
, u32 model
,
841 u32 firmware_revision
)
844 unsigned int w
= sbp2_param_workarounds
;
847 fw_notify("Please notify linux1394-devel@lists.sourceforge.net "
848 "if you need the workarounds parameter for %s\n",
849 tgt
->unit
->device
.bus_id
);
851 if (w
& SBP2_WORKAROUND_OVERRIDE
)
854 for (i
= 0; i
< ARRAY_SIZE(sbp2_workarounds_table
); i
++) {
856 if (sbp2_workarounds_table
[i
].firmware_revision
!=
857 (firmware_revision
& 0xffffff00))
860 if (sbp2_workarounds_table
[i
].model
!= model
&&
861 sbp2_workarounds_table
[i
].model
!= ~0)
864 w
|= sbp2_workarounds_table
[i
].workarounds
;
869 fw_notify("Workarounds for %s: 0x%x "
870 "(firmware_revision 0x%06x, model_id 0x%06x)\n",
871 tgt
->unit
->device
.bus_id
,
872 w
, firmware_revision
, model
);
873 tgt
->workarounds
= w
;
876 static struct scsi_host_template scsi_driver_template
;
878 static int sbp2_probe(struct device
*dev
)
880 struct fw_unit
*unit
= fw_unit(dev
);
881 struct fw_device
*device
= fw_device(unit
->device
.parent
);
882 struct sbp2_target
*tgt
;
883 struct sbp2_logical_unit
*lu
;
884 struct Scsi_Host
*shost
;
885 u32 model
, firmware_revision
;
887 shost
= scsi_host_alloc(&scsi_driver_template
, sizeof(*tgt
));
891 tgt
= (struct sbp2_target
*)shost
->hostdata
;
892 unit
->device
.driver_data
= tgt
;
894 kref_init(&tgt
->kref
);
895 INIT_LIST_HEAD(&tgt
->lu_list
);
897 if (fw_device_enable_phys_dma(device
) < 0)
900 if (scsi_add_host(shost
, &unit
->device
) < 0)
903 /* Initialize to values that won't match anything in our table. */
904 firmware_revision
= 0xff000000;
907 /* implicit directory ID */
908 tgt
->directory_id
= ((unit
->directory
- device
->config_rom
) * 4
909 + CSR_CONFIG_ROM
) & 0xffffff;
911 if (sbp2_scan_unit_dir(tgt
, unit
->directory
, &model
,
912 &firmware_revision
) < 0)
915 sbp2_init_workarounds(tgt
, model
, firmware_revision
);
917 get_device(&unit
->device
);
919 /* Do the login in a workqueue so we can easily reschedule retries. */
920 list_for_each_entry(lu
, &tgt
->lu_list
, link
)
921 sbp2_queue_work(lu
, 0);
925 sbp2_target_put(tgt
);
929 scsi_host_put(shost
);
933 static int sbp2_remove(struct device
*dev
)
935 struct fw_unit
*unit
= fw_unit(dev
);
936 struct sbp2_target
*tgt
= unit
->device
.driver_data
;
938 sbp2_target_put(tgt
);
942 static void sbp2_reconnect(struct work_struct
*work
)
944 struct sbp2_logical_unit
*lu
=
945 container_of(work
, struct sbp2_logical_unit
, work
.work
);
946 struct fw_unit
*unit
= lu
->tgt
->unit
;
947 struct fw_device
*device
= fw_device(unit
->device
.parent
);
948 int generation
, node_id
, local_node_id
;
950 if (fw_device_is_shutdown(device
))
953 generation
= device
->generation
;
954 smp_rmb(); /* node_id must not be older than generation */
955 node_id
= device
->node_id
;
956 local_node_id
= device
->card
->node_id
;
958 if (sbp2_send_management_orb(lu
, node_id
, generation
,
959 SBP2_RECONNECT_REQUEST
,
960 lu
->login_id
, NULL
) < 0) {
961 if (lu
->retries
++ >= 5) {
962 fw_error("failed to reconnect to %s\n",
963 unit
->device
.bus_id
);
964 /* Fall back and try to log in again. */
966 PREPARE_DELAYED_WORK(&lu
->work
, sbp2_login
);
968 sbp2_queue_work(lu
, DIV_ROUND_UP(HZ
, 5));
972 lu
->generation
= generation
;
973 lu
->tgt
->node_id
= node_id
;
974 lu
->tgt
->address_high
= local_node_id
<< 16;
976 fw_notify("reconnected to %s LUN %04x (%d retries)\n",
977 unit
->device
.bus_id
, lu
->lun
, lu
->retries
);
979 sbp2_agent_reset(lu
);
980 sbp2_cancel_orbs(lu
);
982 sbp2_target_put(lu
->tgt
);
985 static void sbp2_update(struct fw_unit
*unit
)
987 struct sbp2_target
*tgt
= unit
->device
.driver_data
;
988 struct sbp2_logical_unit
*lu
;
990 fw_device_enable_phys_dma(fw_device(unit
->device
.parent
));
993 * Fw-core serializes sbp2_update() against sbp2_remove().
994 * Iteration over tgt->lu_list is therefore safe here.
996 list_for_each_entry(lu
, &tgt
->lu_list
, link
) {
998 sbp2_queue_work(lu
, 0);
1002 #define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e
1003 #define SBP2_SW_VERSION_ENTRY 0x00010483
1005 static const struct fw_device_id sbp2_id_table
[] = {
1007 .match_flags
= FW_MATCH_SPECIFIER_ID
| FW_MATCH_VERSION
,
1008 .specifier_id
= SBP2_UNIT_SPEC_ID_ENTRY
,
1009 .version
= SBP2_SW_VERSION_ENTRY
,
1014 static struct fw_driver sbp2_driver
= {
1016 .owner
= THIS_MODULE
,
1017 .name
= sbp2_driver_name
,
1018 .bus
= &fw_bus_type
,
1019 .probe
= sbp2_probe
,
1020 .remove
= sbp2_remove
,
1022 .update
= sbp2_update
,
1023 .id_table
= sbp2_id_table
,
1027 sbp2_status_to_sense_data(u8
*sbp2_status
, u8
*sense_data
)
1031 sense_data
[0] = 0x70;
1032 sense_data
[1] = 0x0;
1033 sense_data
[2] = sbp2_status
[1];
1034 sense_data
[3] = sbp2_status
[4];
1035 sense_data
[4] = sbp2_status
[5];
1036 sense_data
[5] = sbp2_status
[6];
1037 sense_data
[6] = sbp2_status
[7];
1039 sense_data
[8] = sbp2_status
[8];
1040 sense_data
[9] = sbp2_status
[9];
1041 sense_data
[10] = sbp2_status
[10];
1042 sense_data
[11] = sbp2_status
[11];
1043 sense_data
[12] = sbp2_status
[2];
1044 sense_data
[13] = sbp2_status
[3];
1045 sense_data
[14] = sbp2_status
[12];
1046 sense_data
[15] = sbp2_status
[13];
1048 sam_status
= sbp2_status
[0] & 0x3f;
1050 switch (sam_status
) {
1052 case SAM_STAT_CHECK_CONDITION
:
1053 case SAM_STAT_CONDITION_MET
:
1055 case SAM_STAT_RESERVATION_CONFLICT
:
1056 case SAM_STAT_COMMAND_TERMINATED
:
1057 return DID_OK
<< 16 | sam_status
;
1060 return DID_ERROR
<< 16;
1065 complete_command_orb(struct sbp2_orb
*base_orb
, struct sbp2_status
*status
)
1067 struct sbp2_command_orb
*orb
=
1068 container_of(base_orb
, struct sbp2_command_orb
, base
);
1069 struct fw_device
*device
= fw_device(orb
->lu
->tgt
->unit
->device
.parent
);
1072 if (status
!= NULL
) {
1073 if (STATUS_GET_DEAD(*status
))
1074 sbp2_agent_reset(orb
->lu
);
1076 switch (STATUS_GET_RESPONSE(*status
)) {
1077 case SBP2_STATUS_REQUEST_COMPLETE
:
1078 result
= DID_OK
<< 16;
1080 case SBP2_STATUS_TRANSPORT_FAILURE
:
1081 result
= DID_BUS_BUSY
<< 16;
1083 case SBP2_STATUS_ILLEGAL_REQUEST
:
1084 case SBP2_STATUS_VENDOR_DEPENDENT
:
1086 result
= DID_ERROR
<< 16;
1090 if (result
== DID_OK
<< 16 && STATUS_GET_LEN(*status
) > 1)
1091 result
= sbp2_status_to_sense_data(STATUS_GET_DATA(*status
),
1092 orb
->cmd
->sense_buffer
);
1095 * If the orb completes with status == NULL, something
1096 * went wrong, typically a bus reset happened mid-orb
1097 * or when sending the write (less likely).
1099 result
= DID_BUS_BUSY
<< 16;
1102 dma_unmap_single(device
->card
->device
, orb
->base
.request_bus
,
1103 sizeof(orb
->request
), DMA_TO_DEVICE
);
1105 if (scsi_sg_count(orb
->cmd
) > 0)
1106 dma_unmap_sg(device
->card
->device
, scsi_sglist(orb
->cmd
),
1107 scsi_sg_count(orb
->cmd
),
1108 orb
->cmd
->sc_data_direction
);
1110 if (orb
->page_table_bus
!= 0)
1111 dma_unmap_single(device
->card
->device
, orb
->page_table_bus
,
1112 sizeof(orb
->page_table
), DMA_TO_DEVICE
);
1114 orb
->cmd
->result
= result
;
1115 orb
->done(orb
->cmd
);
1119 sbp2_map_scatterlist(struct sbp2_command_orb
*orb
, struct fw_device
*device
,
1120 struct sbp2_logical_unit
*lu
)
1122 struct scatterlist
*sg
;
1123 int sg_len
, l
, i
, j
, count
;
1126 sg
= scsi_sglist(orb
->cmd
);
1127 count
= dma_map_sg(device
->card
->device
, sg
, scsi_sg_count(orb
->cmd
),
1128 orb
->cmd
->sc_data_direction
);
1133 * Handle the special case where there is only one element in
1134 * the scatter list by converting it to an immediate block
1135 * request. This is also a workaround for broken devices such
1136 * as the second generation iPod which doesn't support page
1139 if (count
== 1 && sg_dma_len(sg
) < SBP2_MAX_SG_ELEMENT_LENGTH
) {
1140 orb
->request
.data_descriptor
.high
= lu
->tgt
->address_high
;
1141 orb
->request
.data_descriptor
.low
= sg_dma_address(sg
);
1142 orb
->request
.misc
|= COMMAND_ORB_DATA_SIZE(sg_dma_len(sg
));
1147 * Convert the scatterlist to an sbp2 page table. If any
1148 * scatterlist entries are too big for sbp2, we split them as we
1149 * go. Even if we ask the block I/O layer to not give us sg
1150 * elements larger than 65535 bytes, some IOMMUs may merge sg elements
1151 * during DMA mapping, and Linux currently doesn't prevent this.
1153 for (i
= 0, j
= 0; i
< count
; i
++, sg
= sg_next(sg
)) {
1154 sg_len
= sg_dma_len(sg
);
1155 sg_addr
= sg_dma_address(sg
);
1157 /* FIXME: This won't get us out of the pinch. */
1158 if (unlikely(j
>= ARRAY_SIZE(orb
->page_table
))) {
1159 fw_error("page table overflow\n");
1160 goto fail_page_table
;
1162 l
= min(sg_len
, SBP2_MAX_SG_ELEMENT_LENGTH
);
1163 orb
->page_table
[j
].low
= sg_addr
;
1164 orb
->page_table
[j
].high
= (l
<< 16);
1171 fw_memcpy_to_be32(orb
->page_table
, orb
->page_table
,
1172 sizeof(orb
->page_table
[0]) * j
);
1173 orb
->page_table_bus
=
1174 dma_map_single(device
->card
->device
, orb
->page_table
,
1175 sizeof(orb
->page_table
), DMA_TO_DEVICE
);
1176 if (dma_mapping_error(orb
->page_table_bus
))
1177 goto fail_page_table
;
1180 * The data_descriptor pointer is the one case where we need
1181 * to fill in the node ID part of the address. All other
1182 * pointers assume that the data referenced reside on the
1183 * initiator (i.e. us), but data_descriptor can refer to data
1184 * on other nodes so we need to put our ID in descriptor.high.
1186 orb
->request
.data_descriptor
.high
= lu
->tgt
->address_high
;
1187 orb
->request
.data_descriptor
.low
= orb
->page_table_bus
;
1188 orb
->request
.misc
|=
1189 COMMAND_ORB_PAGE_TABLE_PRESENT
|
1190 COMMAND_ORB_DATA_SIZE(j
);
1195 dma_unmap_sg(device
->card
->device
, sg
, scsi_sg_count(orb
->cmd
),
1196 orb
->cmd
->sc_data_direction
);
1201 /* SCSI stack integration */
1203 static int sbp2_scsi_queuecommand(struct scsi_cmnd
*cmd
, scsi_done_fn_t done
)
1205 struct sbp2_logical_unit
*lu
= cmd
->device
->hostdata
;
1206 struct fw_device
*device
= fw_device(lu
->tgt
->unit
->device
.parent
);
1207 struct sbp2_command_orb
*orb
;
1208 unsigned int max_payload
;
1209 int retval
= SCSI_MLQUEUE_HOST_BUSY
;
1212 * Bidirectional commands are not yet implemented, and unknown
1213 * transfer direction not handled.
1215 if (cmd
->sc_data_direction
== DMA_BIDIRECTIONAL
) {
1216 fw_error("Can't handle DMA_BIDIRECTIONAL, rejecting command\n");
1217 cmd
->result
= DID_ERROR
<< 16;
1222 orb
= kzalloc(sizeof(*orb
), GFP_ATOMIC
);
1224 fw_notify("failed to alloc orb\n");
1225 return SCSI_MLQUEUE_HOST_BUSY
;
1228 /* Initialize rcode to something not RCODE_COMPLETE. */
1229 orb
->base
.rcode
= -1;
1230 kref_init(&orb
->base
.kref
);
1236 orb
->request
.next
.high
= SBP2_ORB_NULL
;
1237 orb
->request
.next
.low
= 0x0;
1239 * At speed 100 we can do 512 bytes per packet, at speed 200,
1240 * 1024 bytes per packet etc. The SBP-2 max_payload field
1241 * specifies the max payload size as 2 ^ (max_payload + 2), so
1242 * if we set this to max_speed + 7, we get the right value.
1244 max_payload
= min(device
->max_speed
+ 7,
1245 device
->card
->max_receive
- 1);
1247 COMMAND_ORB_MAX_PAYLOAD(max_payload
) |
1248 COMMAND_ORB_SPEED(device
->max_speed
) |
1251 if (cmd
->sc_data_direction
== DMA_FROM_DEVICE
)
1252 orb
->request
.misc
|=
1253 COMMAND_ORB_DIRECTION(SBP2_DIRECTION_FROM_MEDIA
);
1254 else if (cmd
->sc_data_direction
== DMA_TO_DEVICE
)
1255 orb
->request
.misc
|=
1256 COMMAND_ORB_DIRECTION(SBP2_DIRECTION_TO_MEDIA
);
1258 if (scsi_sg_count(cmd
) && sbp2_map_scatterlist(orb
, device
, lu
) < 0)
1261 fw_memcpy_to_be32(&orb
->request
, &orb
->request
, sizeof(orb
->request
));
1263 memset(orb
->request
.command_block
,
1264 0, sizeof(orb
->request
.command_block
));
1265 memcpy(orb
->request
.command_block
, cmd
->cmnd
, COMMAND_SIZE(*cmd
->cmnd
));
1267 orb
->base
.callback
= complete_command_orb
;
1268 orb
->base
.request_bus
=
1269 dma_map_single(device
->card
->device
, &orb
->request
,
1270 sizeof(orb
->request
), DMA_TO_DEVICE
);
1271 if (dma_mapping_error(orb
->base
.request_bus
))
1274 sbp2_send_orb(&orb
->base
, lu
, lu
->tgt
->node_id
, lu
->generation
,
1275 lu
->command_block_agent_address
+ SBP2_ORB_POINTER
);
1278 kref_put(&orb
->base
.kref
, free_orb
);
1282 static int sbp2_scsi_slave_alloc(struct scsi_device
*sdev
)
1284 struct sbp2_logical_unit
*lu
= sdev
->hostdata
;
1286 sdev
->allow_restart
= 1;
1289 * Update the dma alignment (minimum alignment requirements for
1290 * start and end of DMA transfers) to be a sector
1292 blk_queue_update_dma_alignment(sdev
->request_queue
, 511);
1294 if (lu
->tgt
->workarounds
& SBP2_WORKAROUND_INQUIRY_36
)
1295 sdev
->inquiry_len
= 36;
1300 static int sbp2_scsi_slave_configure(struct scsi_device
*sdev
)
1302 struct sbp2_logical_unit
*lu
= sdev
->hostdata
;
1304 sdev
->use_10_for_rw
= 1;
1306 if (sdev
->type
== TYPE_ROM
)
1307 sdev
->use_10_for_ms
= 1;
1309 if (sdev
->type
== TYPE_DISK
&&
1310 lu
->tgt
->workarounds
& SBP2_WORKAROUND_MODE_SENSE_8
)
1311 sdev
->skip_ms_page_8
= 1;
1313 if (lu
->tgt
->workarounds
& SBP2_WORKAROUND_FIX_CAPACITY
)
1314 sdev
->fix_capacity
= 1;
1316 if (lu
->tgt
->workarounds
& SBP2_WORKAROUND_128K_MAX_TRANS
)
1317 blk_queue_max_sectors(sdev
->request_queue
, 128 * 1024 / 512);
1323 * Called by scsi stack when something has really gone wrong. Usually
1324 * called when a command has timed-out for some reason.
1326 static int sbp2_scsi_abort(struct scsi_cmnd
*cmd
)
1328 struct sbp2_logical_unit
*lu
= cmd
->device
->hostdata
;
1330 fw_notify("sbp2_scsi_abort\n");
1331 sbp2_agent_reset(lu
);
1332 sbp2_cancel_orbs(lu
);
1338 * Format of /sys/bus/scsi/devices/.../ieee1394_id:
1339 * u64 EUI-64 : u24 directory_ID : u16 LUN (all printed in hexadecimal)
1341 * This is the concatenation of target port identifier and logical unit
1342 * identifier as per SAM-2...SAM-4 annex A.
1345 sbp2_sysfs_ieee1394_id_show(struct device
*dev
, struct device_attribute
*attr
,
1348 struct scsi_device
*sdev
= to_scsi_device(dev
);
1349 struct sbp2_logical_unit
*lu
;
1350 struct fw_device
*device
;
1355 lu
= sdev
->hostdata
;
1356 device
= fw_device(lu
->tgt
->unit
->device
.parent
);
1358 return sprintf(buf
, "%08x%08x:%06x:%04x\n",
1359 device
->config_rom
[3], device
->config_rom
[4],
1360 lu
->tgt
->directory_id
, lu
->lun
);
1363 static DEVICE_ATTR(ieee1394_id
, S_IRUGO
, sbp2_sysfs_ieee1394_id_show
, NULL
);
1365 static struct device_attribute
*sbp2_scsi_sysfs_attrs
[] = {
1366 &dev_attr_ieee1394_id
,
1370 static struct scsi_host_template scsi_driver_template
= {
1371 .module
= THIS_MODULE
,
1372 .name
= "SBP-2 IEEE-1394",
1373 .proc_name
= sbp2_driver_name
,
1374 .queuecommand
= sbp2_scsi_queuecommand
,
1375 .slave_alloc
= sbp2_scsi_slave_alloc
,
1376 .slave_configure
= sbp2_scsi_slave_configure
,
1377 .eh_abort_handler
= sbp2_scsi_abort
,
1379 .sg_tablesize
= SG_ALL
,
1380 .use_clustering
= ENABLE_CLUSTERING
,
1383 .sdev_attrs
= sbp2_scsi_sysfs_attrs
,
1386 MODULE_AUTHOR("Kristian Hoegsberg <krh@bitplanet.net>");
1387 MODULE_DESCRIPTION("SCSI over IEEE1394");
1388 MODULE_LICENSE("GPL");
1389 MODULE_DEVICE_TABLE(ieee1394
, sbp2_id_table
);
1391 /* Provide a module alias so root-on-sbp2 initrds don't break. */
1392 #ifndef CONFIG_IEEE1394_SBP2_MODULE
1393 MODULE_ALIAS("sbp2");
1396 static int __init
sbp2_init(void)
1398 sbp2_wq
= create_singlethread_workqueue(KBUILD_MODNAME
);
1402 return driver_register(&sbp2_driver
.driver
);
1405 static void __exit
sbp2_cleanup(void)
1407 driver_unregister(&sbp2_driver
.driver
);
1408 destroy_workqueue(sbp2_wq
);
1411 module_init(sbp2_init
);
1412 module_exit(sbp2_cleanup
);