2 * Copyright (C) 2005 Dell Inc.
3 * Released under GPL v2.
5 * Serial Attached SCSI (SAS) transport class.
7 * The SAS transport class contains common code to deal with SAS HBAs,
8 * an aproximated representation of SAS topologies in the driver model,
9 * and various sysfs attributes to expose these topologies and managment
10 * interfaces to userspace.
12 * In addition to the basic SCSI core objects this transport class
13 * introduces two additional intermediate objects: The SAS PHY
14 * as represented by struct sas_phy defines an "outgoing" PHY on
15 * a SAS HBA or Expander, and the SAS remote PHY represented by
16 * struct sas_rphy defines an "incoming" PHY on a SAS Expander or
17 * end device. Note that this is purely a software concept, the
18 * underlying hardware for a PHY and a remote PHY is the exactly
21 * There is no concept of a SAS port in this code, users can see
22 * what PHYs form a wide port based on the port_identifier attribute,
23 * which is the same for all PHYs in a port.
26 #include <linux/init.h>
27 #include <linux/module.h>
28 #include <linux/err.h>
30 #include <scsi/scsi_device.h>
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_transport.h>
33 #include <scsi/scsi_transport_sas.h>
36 #define SAS_HOST_ATTRS 0
37 #define SAS_PORT_ATTRS 17
38 #define SAS_RPORT_ATTRS 5
41 struct scsi_transport_template t
;
42 struct sas_function_template
*f
;
44 struct class_device_attribute private_host_attrs
[SAS_HOST_ATTRS
];
45 struct class_device_attribute private_phy_attrs
[SAS_PORT_ATTRS
];
46 struct class_device_attribute private_rphy_attrs
[SAS_RPORT_ATTRS
];
48 struct transport_container phy_attr_cont
;
49 struct transport_container rphy_attr_cont
;
52 * The array of null terminated pointers to attributes
53 * needed by scsi_sysfs.c
55 struct class_device_attribute
*host_attrs
[SAS_HOST_ATTRS
+ 1];
56 struct class_device_attribute
*phy_attrs
[SAS_PORT_ATTRS
+ 1];
57 struct class_device_attribute
*rphy_attrs
[SAS_RPORT_ATTRS
+ 1];
59 #define to_sas_internal(tmpl) container_of(tmpl, struct sas_internal, t)
61 struct sas_host_attrs
{
62 struct list_head rphy_list
;
66 #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
70 * Hack to allow attributes of the same name in different objects.
72 #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
73 struct class_device_attribute class_device_attr_##_prefix##_##_name = \
74 __ATTR(_name,_mode,_show,_store)
78 * Pretty printing helpers
81 #define sas_bitfield_name_match(title, table) \
83 get_sas_##title##_names(u32 table_key, char *buf) \
89 for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
90 if (table[i].value & table_key) { \
91 len += sprintf(buf + len, "%s%s", \
92 prefix, table[i].name); \
96 len += sprintf(buf + len, "\n"); \
100 #define sas_bitfield_name_search(title, table) \
102 get_sas_##title##_names(u32 table_key, char *buf) \
107 for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
108 if (table[i].value == table_key) { \
109 len += sprintf(buf + len, "%s", \
114 len += sprintf(buf + len, "\n"); \
121 } sas_device_type_names
[] = {
122 { SAS_PHY_UNUSED
, "unused" },
123 { SAS_END_DEVICE
, "end device" },
124 { SAS_EDGE_EXPANDER_DEVICE
, "edge expander" },
125 { SAS_FANOUT_EXPANDER_DEVICE
, "fanout expander" },
127 sas_bitfield_name_search(device_type
, sas_device_type_names
)
133 } sas_protocol_names
[] = {
134 { SAS_PROTOCOL_SATA
, "sata" },
135 { SAS_PROTOCOL_SMP
, "smp" },
136 { SAS_PROTOCOL_STP
, "stp" },
137 { SAS_PROTOCOL_SSP
, "ssp" },
139 sas_bitfield_name_match(protocol
, sas_protocol_names
)
144 } sas_linkspeed_names
[] = {
145 { SAS_LINK_RATE_UNKNOWN
, "Unknown" },
146 { SAS_PHY_DISABLED
, "Phy disabled" },
147 { SAS_LINK_RATE_FAILED
, "Link Rate failed" },
148 { SAS_SATA_SPINUP_HOLD
, "Spin-up hold" },
149 { SAS_LINK_RATE_1_5_GBPS
, "1.5 Gbit" },
150 { SAS_LINK_RATE_3_0_GBPS
, "3.0 Gbit" },
152 sas_bitfield_name_search(linkspeed
, sas_linkspeed_names
)
156 * SAS host attributes
159 static int sas_host_setup(struct transport_container
*tc
, struct device
*dev
,
160 struct class_device
*cdev
)
162 struct Scsi_Host
*shost
= dev_to_shost(dev
);
163 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
165 INIT_LIST_HEAD(&sas_host
->rphy_list
);
166 spin_lock_init(&sas_host
->lock
);
167 sas_host
->next_target_id
= 0;
171 static DECLARE_TRANSPORT_CLASS(sas_host_class
,
172 "sas_host", sas_host_setup
, NULL
, NULL
);
174 static int sas_host_match(struct attribute_container
*cont
,
177 struct Scsi_Host
*shost
;
178 struct sas_internal
*i
;
180 if (!scsi_is_host_device(dev
))
182 shost
= dev_to_shost(dev
);
184 if (!shost
->transportt
)
186 if (shost
->transportt
->host_attrs
.ac
.class !=
187 &sas_host_class
.class)
190 i
= to_sas_internal(shost
->transportt
);
191 return &i
->t
.host_attrs
.ac
== cont
;
194 static int do_sas_phy_delete(struct device
*dev
, void *data
)
196 if (scsi_is_sas_phy(dev
))
197 sas_phy_delete(dev_to_phy(dev
));
202 * sas_remove_host -- tear down a Scsi_Host's SAS data structures
203 * @shost: Scsi Host that is torn down
205 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
206 * Must be called just before scsi_remove_host for SAS HBAs.
208 void sas_remove_host(struct Scsi_Host
*shost
)
210 device_for_each_child(&shost
->shost_gendev
, NULL
, do_sas_phy_delete
);
212 EXPORT_SYMBOL(sas_remove_host
);
216 * SAS Port attributes
219 #define sas_phy_show_simple(field, name, format_string, cast) \
221 show_sas_phy_##name(struct class_device *cdev, char *buf) \
223 struct sas_phy *phy = transport_class_to_phy(cdev); \
225 return snprintf(buf, 20, format_string, cast phy->field); \
228 #define sas_phy_simple_attr(field, name, format_string, type) \
229 sas_phy_show_simple(field, name, format_string, (type)) \
230 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
232 #define sas_phy_show_protocol(field, name) \
234 show_sas_phy_##name(struct class_device *cdev, char *buf) \
236 struct sas_phy *phy = transport_class_to_phy(cdev); \
239 return snprintf(buf, 20, "none\n"); \
240 return get_sas_protocol_names(phy->field, buf); \
243 #define sas_phy_protocol_attr(field, name) \
244 sas_phy_show_protocol(field, name) \
245 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
247 #define sas_phy_show_linkspeed(field) \
249 show_sas_phy_##field(struct class_device *cdev, char *buf) \
251 struct sas_phy *phy = transport_class_to_phy(cdev); \
253 return get_sas_linkspeed_names(phy->field, buf); \
256 #define sas_phy_linkspeed_attr(field) \
257 sas_phy_show_linkspeed(field) \
258 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
260 #define sas_phy_show_linkerror(field) \
262 show_sas_phy_##field(struct class_device *cdev, char *buf) \
264 struct sas_phy *phy = transport_class_to_phy(cdev); \
265 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
266 struct sas_internal *i = to_sas_internal(shost->transportt); \
269 if (!phy->local_attached) \
272 error = i->f->get_linkerrors(phy); \
275 return snprintf(buf, 20, "%u\n", phy->field); \
278 #define sas_phy_linkerror_attr(field) \
279 sas_phy_show_linkerror(field) \
280 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
284 show_sas_device_type(struct class_device
*cdev
, char *buf
)
286 struct sas_phy
*phy
= transport_class_to_phy(cdev
);
288 if (!phy
->identify
.device_type
)
289 return snprintf(buf
, 20, "none\n");
290 return get_sas_device_type_names(phy
->identify
.device_type
, buf
);
292 static CLASS_DEVICE_ATTR(device_type
, S_IRUGO
, show_sas_device_type
, NULL
);
294 static ssize_t
do_sas_phy_reset(struct class_device
*cdev
,
295 size_t count
, int hard_reset
)
297 struct sas_phy
*phy
= transport_class_to_phy(cdev
);
298 struct Scsi_Host
*shost
= dev_to_shost(phy
->dev
.parent
);
299 struct sas_internal
*i
= to_sas_internal(shost
->transportt
);
302 if (!phy
->local_attached
)
305 error
= i
->f
->phy_reset(phy
, hard_reset
);
311 static ssize_t
store_sas_link_reset(struct class_device
*cdev
,
312 const char *buf
, size_t count
)
314 return do_sas_phy_reset(cdev
, count
, 0);
316 static CLASS_DEVICE_ATTR(link_reset
, S_IWUSR
, NULL
, store_sas_link_reset
);
318 static ssize_t
store_sas_hard_reset(struct class_device
*cdev
,
319 const char *buf
, size_t count
)
321 return do_sas_phy_reset(cdev
, count
, 1);
323 static CLASS_DEVICE_ATTR(hard_reset
, S_IWUSR
, NULL
, store_sas_hard_reset
);
325 sas_phy_protocol_attr(identify
.initiator_port_protocols
,
326 initiator_port_protocols
);
327 sas_phy_protocol_attr(identify
.target_port_protocols
,
328 target_port_protocols
);
329 sas_phy_simple_attr(identify
.sas_address
, sas_address
, "0x%016llx\n",
331 sas_phy_simple_attr(identify
.phy_identifier
, phy_identifier
, "%d\n", u8
);
332 sas_phy_simple_attr(port_identifier
, port_identifier
, "%d\n", u8
);
333 sas_phy_linkspeed_attr(negotiated_linkrate
);
334 sas_phy_linkspeed_attr(minimum_linkrate_hw
);
335 sas_phy_linkspeed_attr(minimum_linkrate
);
336 sas_phy_linkspeed_attr(maximum_linkrate_hw
);
337 sas_phy_linkspeed_attr(maximum_linkrate
);
338 sas_phy_linkerror_attr(invalid_dword_count
);
339 sas_phy_linkerror_attr(running_disparity_error_count
);
340 sas_phy_linkerror_attr(loss_of_dword_sync_count
);
341 sas_phy_linkerror_attr(phy_reset_problem_count
);
344 static DECLARE_TRANSPORT_CLASS(sas_phy_class
,
345 "sas_phy", NULL
, NULL
, NULL
);
347 static int sas_phy_match(struct attribute_container
*cont
, struct device
*dev
)
349 struct Scsi_Host
*shost
;
350 struct sas_internal
*i
;
352 if (!scsi_is_sas_phy(dev
))
354 shost
= dev_to_shost(dev
->parent
);
356 if (!shost
->transportt
)
358 if (shost
->transportt
->host_attrs
.ac
.class !=
359 &sas_host_class
.class)
362 i
= to_sas_internal(shost
->transportt
);
363 return &i
->phy_attr_cont
.ac
== cont
;
366 static void sas_phy_release(struct device
*dev
)
368 struct sas_phy
*phy
= dev_to_phy(dev
);
370 put_device(dev
->parent
);
375 * sas_phy_alloc -- allocates and initialize a SAS PHY structure
376 * @parent: Parent device
377 * @number: Port number
379 * Allocates an SAS PHY structure. It will be added in the device tree
380 * below the device specified by @parent, which has to be either a Scsi_Host
384 * SAS PHY allocated or %NULL if the allocation failed.
386 struct sas_phy
*sas_phy_alloc(struct device
*parent
, int number
)
388 struct Scsi_Host
*shost
= dev_to_shost(parent
);
391 phy
= kmalloc(sizeof(*phy
), GFP_KERNEL
);
394 memset(phy
, 0, sizeof(*phy
));
398 phy
->number
= number
;
400 device_initialize(&phy
->dev
);
401 phy
->dev
.parent
= get_device(parent
);
402 phy
->dev
.release
= sas_phy_release
;
403 sprintf(phy
->dev
.bus_id
, "phy-%d:%d", shost
->host_no
, number
);
405 transport_setup_device(&phy
->dev
);
409 EXPORT_SYMBOL(sas_phy_alloc
);
412 * sas_phy_add -- add a SAS PHY to the device hierachy
413 * @phy: The PHY to be added
415 * Publishes a SAS PHY to the rest of the system.
417 int sas_phy_add(struct sas_phy
*phy
)
421 error
= device_add(&phy
->dev
);
423 transport_add_device(&phy
->dev
);
424 transport_configure_device(&phy
->dev
);
429 EXPORT_SYMBOL(sas_phy_add
);
432 * sas_phy_free -- free a SAS PHY
433 * @phy: SAS PHY to free
435 * Frees the specified SAS PHY.
438 * This function must only be called on a PHY that has not
439 * sucessfully been added using sas_phy_add().
441 void sas_phy_free(struct sas_phy
*phy
)
443 transport_destroy_device(&phy
->dev
);
444 put_device(phy
->dev
.parent
);
445 put_device(phy
->dev
.parent
);
446 put_device(phy
->dev
.parent
);
449 EXPORT_SYMBOL(sas_phy_free
);
452 * sas_phy_delete -- remove SAS PHY
453 * @phy: SAS PHY to remove
455 * Removes the specified SAS PHY. If the SAS PHY has an
456 * associated remote PHY it is removed before.
459 sas_phy_delete(struct sas_phy
*phy
)
461 struct device
*dev
= &phy
->dev
;
464 sas_rphy_delete(phy
->rphy
);
466 transport_remove_device(dev
);
468 transport_destroy_device(dev
);
469 put_device(dev
->parent
);
471 EXPORT_SYMBOL(sas_phy_delete
);
474 * scsi_is_sas_phy -- check if a struct device represents a SAS PHY
475 * @dev: device to check
478 * %1 if the device represents a SAS PHY, %0 else
480 int scsi_is_sas_phy(const struct device
*dev
)
482 return dev
->release
== sas_phy_release
;
484 EXPORT_SYMBOL(scsi_is_sas_phy
);
487 * SAS remote PHY attributes.
490 #define sas_rphy_show_simple(field, name, format_string, cast) \
492 show_sas_rphy_##name(struct class_device *cdev, char *buf) \
494 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
496 return snprintf(buf, 20, format_string, cast rphy->field); \
499 #define sas_rphy_simple_attr(field, name, format_string, type) \
500 sas_rphy_show_simple(field, name, format_string, (type)) \
501 static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
502 show_sas_rphy_##name, NULL)
504 #define sas_rphy_show_protocol(field, name) \
506 show_sas_rphy_##name(struct class_device *cdev, char *buf) \
508 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
511 return snprintf(buf, 20, "none\n"); \
512 return get_sas_protocol_names(rphy->field, buf); \
515 #define sas_rphy_protocol_attr(field, name) \
516 sas_rphy_show_protocol(field, name) \
517 static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
518 show_sas_rphy_##name, NULL)
521 show_sas_rphy_device_type(struct class_device
*cdev
, char *buf
)
523 struct sas_rphy
*rphy
= transport_class_to_rphy(cdev
);
525 if (!rphy
->identify
.device_type
)
526 return snprintf(buf
, 20, "none\n");
527 return get_sas_device_type_names(
528 rphy
->identify
.device_type
, buf
);
531 static SAS_CLASS_DEVICE_ATTR(rphy
, device_type
, S_IRUGO
,
532 show_sas_rphy_device_type
, NULL
);
534 sas_rphy_protocol_attr(identify
.initiator_port_protocols
,
535 initiator_port_protocols
);
536 sas_rphy_protocol_attr(identify
.target_port_protocols
, target_port_protocols
);
537 sas_rphy_simple_attr(identify
.sas_address
, sas_address
, "0x%016llx\n",
539 sas_rphy_simple_attr(identify
.phy_identifier
, phy_identifier
, "%d\n", u8
);
541 static DECLARE_TRANSPORT_CLASS(sas_rphy_class
,
542 "sas_rphy", NULL
, NULL
, NULL
);
544 static int sas_rphy_match(struct attribute_container
*cont
, struct device
*dev
)
546 struct Scsi_Host
*shost
;
547 struct sas_internal
*i
;
549 if (!scsi_is_sas_rphy(dev
))
551 shost
= dev_to_shost(dev
->parent
->parent
);
553 if (!shost
->transportt
)
555 if (shost
->transportt
->host_attrs
.ac
.class !=
556 &sas_host_class
.class)
559 i
= to_sas_internal(shost
->transportt
);
560 return &i
->rphy_attr_cont
.ac
== cont
;
563 static void sas_rphy_release(struct device
*dev
)
565 struct sas_rphy
*rphy
= dev_to_rphy(dev
);
567 put_device(dev
->parent
);
572 * sas_rphy_alloc -- allocates and initialize a SAS remote PHY structure
573 * @parent: SAS PHY this remote PHY is conneted to
575 * Allocates an SAS remote PHY structure, connected to @parent.
578 * SAS PHY allocated or %NULL if the allocation failed.
580 struct sas_rphy
*sas_rphy_alloc(struct sas_phy
*parent
)
582 struct Scsi_Host
*shost
= dev_to_shost(&parent
->dev
);
583 struct sas_rphy
*rphy
;
585 rphy
= kmalloc(sizeof(*rphy
), GFP_KERNEL
);
587 put_device(&parent
->dev
);
590 memset(rphy
, 0, sizeof(*rphy
));
592 device_initialize(&rphy
->dev
);
593 rphy
->dev
.parent
= get_device(&parent
->dev
);
594 rphy
->dev
.release
= sas_rphy_release
;
595 sprintf(rphy
->dev
.bus_id
, "rphy-%d:%d",
596 shost
->host_no
, parent
->number
);
597 transport_setup_device(&rphy
->dev
);
601 EXPORT_SYMBOL(sas_rphy_alloc
);
604 * sas_rphy_add -- add a SAS remote PHY to the device hierachy
605 * @rphy: The remote PHY to be added
607 * Publishes a SAS remote PHY to the rest of the system.
609 int sas_rphy_add(struct sas_rphy
*rphy
)
611 struct sas_phy
*parent
= dev_to_phy(rphy
->dev
.parent
);
612 struct Scsi_Host
*shost
= dev_to_shost(parent
->dev
.parent
);
613 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
614 struct sas_identify
*identify
= &rphy
->identify
;
621 error
= device_add(&rphy
->dev
);
624 transport_add_device(&rphy
->dev
);
625 transport_configure_device(&rphy
->dev
);
627 spin_lock(&sas_host
->lock
);
628 list_add_tail(&rphy
->list
, &sas_host
->rphy_list
);
629 if (identify
->device_type
== SAS_END_DEVICE
&&
630 (identify
->target_port_protocols
&
631 (SAS_PROTOCOL_SSP
|SAS_PROTOCOL_STP
|SAS_PROTOCOL_SATA
)))
632 rphy
->scsi_target_id
= sas_host
->next_target_id
++;
634 rphy
->scsi_target_id
= -1;
635 spin_unlock(&sas_host
->lock
);
637 if (rphy
->scsi_target_id
!= -1) {
638 scsi_scan_target(&rphy
->dev
, parent
->number
,
639 rphy
->scsi_target_id
, ~0, 0);
644 EXPORT_SYMBOL(sas_rphy_add
);
647 * sas_rphy_free -- free a SAS remote PHY
648 * @rphy SAS remote PHY to free
650 * Frees the specified SAS remote PHY.
653 * This function must only be called on a remote
654 * PHY that has not sucessfully been added using
657 void sas_rphy_free(struct sas_rphy
*rphy
)
659 struct Scsi_Host
*shost
= dev_to_shost(rphy
->dev
.parent
->parent
);
660 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
662 spin_lock(&sas_host
->lock
);
663 list_del(&rphy
->list
);
664 spin_unlock(&sas_host
->lock
);
666 transport_destroy_device(&rphy
->dev
);
667 put_device(rphy
->dev
.parent
);
668 put_device(rphy
->dev
.parent
);
669 put_device(rphy
->dev
.parent
);
672 EXPORT_SYMBOL(sas_rphy_free
);
675 * sas_rphy_delete -- remove SAS remote PHY
676 * @rphy: SAS remote PHY to remove
678 * Removes the specified SAS remote PHY.
681 sas_rphy_delete(struct sas_rphy
*rphy
)
683 struct device
*dev
= &rphy
->dev
;
684 struct sas_phy
*parent
= dev_to_phy(dev
->parent
);
685 struct Scsi_Host
*shost
= dev_to_shost(parent
->dev
.parent
);
686 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
688 scsi_remove_target(dev
);
690 transport_remove_device(dev
);
692 transport_destroy_device(dev
);
694 spin_lock(&sas_host
->lock
);
695 list_del(&rphy
->list
);
696 spin_unlock(&sas_host
->lock
);
698 put_device(&parent
->dev
);
700 EXPORT_SYMBOL(sas_rphy_delete
);
703 * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY
704 * @dev: device to check
707 * %1 if the device represents a SAS remote PHY, %0 else
709 int scsi_is_sas_rphy(const struct device
*dev
)
711 return dev
->release
== sas_rphy_release
;
713 EXPORT_SYMBOL(scsi_is_sas_rphy
);
720 static struct device
*sas_target_parent(struct Scsi_Host
*shost
,
721 int channel
, uint id
)
723 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
724 struct sas_rphy
*rphy
;
725 struct device
*dev
= NULL
;
727 spin_lock(&sas_host
->lock
);
728 list_for_each_entry(rphy
, &sas_host
->rphy_list
, list
) {
729 struct sas_phy
*parent
= dev_to_phy(rphy
->dev
.parent
);
730 if (parent
->number
== channel
&&
731 rphy
->scsi_target_id
== id
)
734 spin_unlock(&sas_host
->lock
);
741 * Setup / Teardown code
744 #define SETUP_RPORT_ATTRIBUTE(field) \
745 i->private_rphy_attrs[count] = class_device_attr_##field; \
746 i->private_rphy_attrs[count].attr.mode = S_IRUGO; \
747 i->private_rphy_attrs[count].store = NULL; \
748 i->rphy_attrs[count] = &i->private_rphy_attrs[count]; \
751 #define SETUP_PORT_ATTRIBUTE(field) \
752 i->private_phy_attrs[count] = class_device_attr_##field; \
753 i->private_phy_attrs[count].attr.mode = S_IRUGO; \
754 i->private_phy_attrs[count].store = NULL; \
755 i->phy_attrs[count] = &i->private_phy_attrs[count]; \
758 #define SETUP_PORT_ATTRIBUTE_WRONLY(field) \
759 i->private_phy_attrs[count] = class_device_attr_##field; \
760 i->private_phy_attrs[count].attr.mode = S_IWUGO; \
761 i->private_phy_attrs[count].show = NULL; \
762 i->phy_attrs[count] = &i->private_phy_attrs[count]; \
767 * sas_attach_transport -- instantiate SAS transport template
768 * @ft: SAS transport class function template
770 struct scsi_transport_template
*
771 sas_attach_transport(struct sas_function_template
*ft
)
773 struct sas_internal
*i
;
776 i
= kmalloc(sizeof(struct sas_internal
), GFP_KERNEL
);
779 memset(i
, 0, sizeof(struct sas_internal
));
781 i
->t
.target_parent
= sas_target_parent
;
783 i
->t
.host_attrs
.ac
.attrs
= &i
->host_attrs
[0];
784 i
->t
.host_attrs
.ac
.class = &sas_host_class
.class;
785 i
->t
.host_attrs
.ac
.match
= sas_host_match
;
786 transport_container_register(&i
->t
.host_attrs
);
787 i
->t
.host_size
= sizeof(struct sas_host_attrs
);
789 i
->phy_attr_cont
.ac
.class = &sas_phy_class
.class;
790 i
->phy_attr_cont
.ac
.attrs
= &i
->phy_attrs
[0];
791 i
->phy_attr_cont
.ac
.match
= sas_phy_match
;
792 transport_container_register(&i
->phy_attr_cont
);
794 i
->rphy_attr_cont
.ac
.class = &sas_rphy_class
.class;
795 i
->rphy_attr_cont
.ac
.attrs
= &i
->rphy_attrs
[0];
796 i
->rphy_attr_cont
.ac
.match
= sas_rphy_match
;
797 transport_container_register(&i
->rphy_attr_cont
);
802 i
->host_attrs
[count
] = NULL
;
805 SETUP_PORT_ATTRIBUTE(initiator_port_protocols
);
806 SETUP_PORT_ATTRIBUTE(target_port_protocols
);
807 SETUP_PORT_ATTRIBUTE(device_type
);
808 SETUP_PORT_ATTRIBUTE(sas_address
);
809 SETUP_PORT_ATTRIBUTE(phy_identifier
);
810 SETUP_PORT_ATTRIBUTE(port_identifier
);
811 SETUP_PORT_ATTRIBUTE(negotiated_linkrate
);
812 SETUP_PORT_ATTRIBUTE(minimum_linkrate_hw
);
813 SETUP_PORT_ATTRIBUTE(minimum_linkrate
);
814 SETUP_PORT_ATTRIBUTE(maximum_linkrate_hw
);
815 SETUP_PORT_ATTRIBUTE(maximum_linkrate
);
817 SETUP_PORT_ATTRIBUTE(invalid_dword_count
);
818 SETUP_PORT_ATTRIBUTE(running_disparity_error_count
);
819 SETUP_PORT_ATTRIBUTE(loss_of_dword_sync_count
);
820 SETUP_PORT_ATTRIBUTE(phy_reset_problem_count
);
821 SETUP_PORT_ATTRIBUTE_WRONLY(link_reset
);
822 SETUP_PORT_ATTRIBUTE_WRONLY(hard_reset
);
823 i
->phy_attrs
[count
] = NULL
;
826 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols
);
827 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols
);
828 SETUP_RPORT_ATTRIBUTE(rphy_device_type
);
829 SETUP_RPORT_ATTRIBUTE(rphy_sas_address
);
830 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier
);
831 i
->rphy_attrs
[count
] = NULL
;
835 EXPORT_SYMBOL(sas_attach_transport
);
838 * sas_release_transport -- release SAS transport template instance
839 * @t: transport template instance
841 void sas_release_transport(struct scsi_transport_template
*t
)
843 struct sas_internal
*i
= to_sas_internal(t
);
845 transport_container_unregister(&i
->t
.host_attrs
);
846 transport_container_unregister(&i
->phy_attr_cont
);
847 transport_container_unregister(&i
->rphy_attr_cont
);
851 EXPORT_SYMBOL(sas_release_transport
);
853 static __init
int sas_transport_init(void)
857 error
= transport_class_register(&sas_host_class
);
860 error
= transport_class_register(&sas_phy_class
);
862 goto out_unregister_transport
;
863 error
= transport_class_register(&sas_rphy_class
);
865 goto out_unregister_phy
;
870 transport_class_unregister(&sas_phy_class
);
871 out_unregister_transport
:
872 transport_class_unregister(&sas_host_class
);
878 static void __exit
sas_transport_exit(void)
880 transport_class_unregister(&sas_host_class
);
881 transport_class_unregister(&sas_phy_class
);
882 transport_class_unregister(&sas_rphy_class
);
885 MODULE_AUTHOR("Christoph Hellwig");
886 MODULE_DESCRIPTION("SAS Transphy Attributes");
887 MODULE_LICENSE("GPL");
889 module_init(sas_transport_init
);
890 module_exit(sas_transport_exit
);