2 * Copyright (C) 2005-2006 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>
29 #include <linux/slab.h>
30 #include <linux/string.h>
32 #include <scsi/scsi.h>
33 #include <scsi/scsi_device.h>
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_transport.h>
36 #include <scsi/scsi_transport_sas.h>
38 #include "scsi_sas_internal.h"
39 struct sas_host_attrs
{
40 struct list_head rphy_list
;
45 #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
49 * Hack to allow attributes of the same name in different objects.
51 #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
52 struct class_device_attribute class_device_attr_##_prefix##_##_name = \
53 __ATTR(_name,_mode,_show,_store)
57 * Pretty printing helpers
60 #define sas_bitfield_name_match(title, table) \
62 get_sas_##title##_names(u32 table_key, char *buf) \
68 for (i = 0; i < ARRAY_SIZE(table); i++) { \
69 if (table[i].value & table_key) { \
70 len += sprintf(buf + len, "%s%s", \
71 prefix, table[i].name); \
75 len += sprintf(buf + len, "\n"); \
79 #define sas_bitfield_name_search(title, table) \
81 get_sas_##title##_names(u32 table_key, char *buf) \
86 for (i = 0; i < ARRAY_SIZE(table); i++) { \
87 if (table[i].value == table_key) { \
88 len += sprintf(buf + len, "%s", \
93 len += sprintf(buf + len, "\n"); \
100 } sas_device_type_names
[] = {
101 { SAS_PHY_UNUSED
, "unused" },
102 { SAS_END_DEVICE
, "end device" },
103 { SAS_EDGE_EXPANDER_DEVICE
, "edge expander" },
104 { SAS_FANOUT_EXPANDER_DEVICE
, "fanout expander" },
106 sas_bitfield_name_search(device_type
, sas_device_type_names
)
112 } sas_protocol_names
[] = {
113 { SAS_PROTOCOL_SATA
, "sata" },
114 { SAS_PROTOCOL_SMP
, "smp" },
115 { SAS_PROTOCOL_STP
, "stp" },
116 { SAS_PROTOCOL_SSP
, "ssp" },
118 sas_bitfield_name_match(protocol
, sas_protocol_names
)
123 } sas_linkspeed_names
[] = {
124 { SAS_LINK_RATE_UNKNOWN
, "Unknown" },
125 { SAS_PHY_DISABLED
, "Phy disabled" },
126 { SAS_LINK_RATE_FAILED
, "Link Rate failed" },
127 { SAS_SATA_SPINUP_HOLD
, "Spin-up hold" },
128 { SAS_LINK_RATE_1_5_GBPS
, "1.5 Gbit" },
129 { SAS_LINK_RATE_3_0_GBPS
, "3.0 Gbit" },
130 { SAS_LINK_RATE_6_0_GBPS
, "6.0 Gbit" },
132 sas_bitfield_name_search(linkspeed
, sas_linkspeed_names
)
136 * SAS host attributes
139 static int sas_host_setup(struct transport_container
*tc
, struct device
*dev
,
140 struct class_device
*cdev
)
142 struct Scsi_Host
*shost
= dev_to_shost(dev
);
143 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
145 INIT_LIST_HEAD(&sas_host
->rphy_list
);
146 mutex_init(&sas_host
->lock
);
147 sas_host
->next_target_id
= 0;
148 sas_host
->next_expander_id
= 0;
152 static DECLARE_TRANSPORT_CLASS(sas_host_class
,
153 "sas_host", sas_host_setup
, NULL
, NULL
);
155 static int sas_host_match(struct attribute_container
*cont
,
158 struct Scsi_Host
*shost
;
159 struct sas_internal
*i
;
161 if (!scsi_is_host_device(dev
))
163 shost
= dev_to_shost(dev
);
165 if (!shost
->transportt
)
167 if (shost
->transportt
->host_attrs
.ac
.class !=
168 &sas_host_class
.class)
171 i
= to_sas_internal(shost
->transportt
);
172 return &i
->t
.host_attrs
.ac
== cont
;
175 static int do_sas_phy_delete(struct device
*dev
, void *data
)
177 int pass
= (int)(unsigned long)data
;
179 if (pass
== 0 && scsi_is_sas_port(dev
))
180 sas_port_delete(dev_to_sas_port(dev
));
181 else if (pass
== 1 && scsi_is_sas_phy(dev
))
182 sas_phy_delete(dev_to_phy(dev
));
187 * sas_remove_children -- tear down a devices SAS data structures
188 * @dev: device belonging to the sas object
190 * Removes all SAS PHYs and remote PHYs for a given object
192 void sas_remove_children(struct device
*dev
)
194 device_for_each_child(dev
, (void *)0, do_sas_phy_delete
);
195 device_for_each_child(dev
, (void *)1, do_sas_phy_delete
);
197 EXPORT_SYMBOL(sas_remove_children
);
200 * sas_remove_host -- tear down a Scsi_Host's SAS data structures
201 * @shost: Scsi Host that is torn down
203 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
204 * Must be called just before scsi_remove_host for SAS HBAs.
206 void sas_remove_host(struct Scsi_Host
*shost
)
208 sas_remove_children(&shost
->shost_gendev
);
210 EXPORT_SYMBOL(sas_remove_host
);
217 #define sas_phy_show_simple(field, name, format_string, cast) \
219 show_sas_phy_##name(struct class_device *cdev, char *buf) \
221 struct sas_phy *phy = transport_class_to_phy(cdev); \
223 return snprintf(buf, 20, format_string, cast phy->field); \
226 #define sas_phy_simple_attr(field, name, format_string, type) \
227 sas_phy_show_simple(field, name, format_string, (type)) \
228 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
230 #define sas_phy_show_protocol(field, name) \
232 show_sas_phy_##name(struct class_device *cdev, char *buf) \
234 struct sas_phy *phy = transport_class_to_phy(cdev); \
237 return snprintf(buf, 20, "none\n"); \
238 return get_sas_protocol_names(phy->field, buf); \
241 #define sas_phy_protocol_attr(field, name) \
242 sas_phy_show_protocol(field, name) \
243 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
245 #define sas_phy_show_linkspeed(field) \
247 show_sas_phy_##field(struct class_device *cdev, char *buf) \
249 struct sas_phy *phy = transport_class_to_phy(cdev); \
251 return get_sas_linkspeed_names(phy->field, buf); \
254 #define sas_phy_linkspeed_attr(field) \
255 sas_phy_show_linkspeed(field) \
256 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
258 #define sas_phy_show_linkerror(field) \
260 show_sas_phy_##field(struct class_device *cdev, char *buf) \
262 struct sas_phy *phy = transport_class_to_phy(cdev); \
263 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
264 struct sas_internal *i = to_sas_internal(shost->transportt); \
267 if (!phy->local_attached) \
270 error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
273 return snprintf(buf, 20, "%u\n", phy->field); \
276 #define sas_phy_linkerror_attr(field) \
277 sas_phy_show_linkerror(field) \
278 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
282 show_sas_device_type(struct class_device
*cdev
, char *buf
)
284 struct sas_phy
*phy
= transport_class_to_phy(cdev
);
286 if (!phy
->identify
.device_type
)
287 return snprintf(buf
, 20, "none\n");
288 return get_sas_device_type_names(phy
->identify
.device_type
, buf
);
290 static CLASS_DEVICE_ATTR(device_type
, S_IRUGO
, show_sas_device_type
, NULL
);
292 static ssize_t
do_sas_phy_reset(struct class_device
*cdev
,
293 size_t count
, int hard_reset
)
295 struct sas_phy
*phy
= transport_class_to_phy(cdev
);
296 struct Scsi_Host
*shost
= dev_to_shost(phy
->dev
.parent
);
297 struct sas_internal
*i
= to_sas_internal(shost
->transportt
);
300 if (!phy
->local_attached
)
303 error
= i
->f
->phy_reset(phy
, hard_reset
);
309 static ssize_t
store_sas_link_reset(struct class_device
*cdev
,
310 const char *buf
, size_t count
)
312 return do_sas_phy_reset(cdev
, count
, 0);
314 static CLASS_DEVICE_ATTR(link_reset
, S_IWUSR
, NULL
, store_sas_link_reset
);
316 static ssize_t
store_sas_hard_reset(struct class_device
*cdev
,
317 const char *buf
, size_t count
)
319 return do_sas_phy_reset(cdev
, count
, 1);
321 static CLASS_DEVICE_ATTR(hard_reset
, S_IWUSR
, NULL
, store_sas_hard_reset
);
323 sas_phy_protocol_attr(identify
.initiator_port_protocols
,
324 initiator_port_protocols
);
325 sas_phy_protocol_attr(identify
.target_port_protocols
,
326 target_port_protocols
);
327 sas_phy_simple_attr(identify
.sas_address
, sas_address
, "0x%016llx\n",
329 sas_phy_simple_attr(identify
.phy_identifier
, phy_identifier
, "%d\n", u8
);
330 //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", u8);
331 sas_phy_linkspeed_attr(negotiated_linkrate
);
332 sas_phy_linkspeed_attr(minimum_linkrate_hw
);
333 sas_phy_linkspeed_attr(minimum_linkrate
);
334 sas_phy_linkspeed_attr(maximum_linkrate_hw
);
335 sas_phy_linkspeed_attr(maximum_linkrate
);
336 sas_phy_linkerror_attr(invalid_dword_count
);
337 sas_phy_linkerror_attr(running_disparity_error_count
);
338 sas_phy_linkerror_attr(loss_of_dword_sync_count
);
339 sas_phy_linkerror_attr(phy_reset_problem_count
);
342 static DECLARE_TRANSPORT_CLASS(sas_phy_class
,
343 "sas_phy", NULL
, NULL
, NULL
);
345 static int sas_phy_match(struct attribute_container
*cont
, struct device
*dev
)
347 struct Scsi_Host
*shost
;
348 struct sas_internal
*i
;
350 if (!scsi_is_sas_phy(dev
))
352 shost
= dev_to_shost(dev
->parent
);
354 if (!shost
->transportt
)
356 if (shost
->transportt
->host_attrs
.ac
.class !=
357 &sas_host_class
.class)
360 i
= to_sas_internal(shost
->transportt
);
361 return &i
->phy_attr_cont
.ac
== cont
;
364 static void sas_phy_release(struct device
*dev
)
366 struct sas_phy
*phy
= dev_to_phy(dev
);
368 put_device(dev
->parent
);
373 * sas_phy_alloc -- allocates and initialize a SAS PHY structure
374 * @parent: Parent device
377 * Allocates an SAS PHY structure. It will be added in the device tree
378 * below the device specified by @parent, which has to be either a Scsi_Host
382 * SAS PHY allocated or %NULL if the allocation failed.
384 struct sas_phy
*sas_phy_alloc(struct device
*parent
, int number
)
386 struct Scsi_Host
*shost
= dev_to_shost(parent
);
389 phy
= kzalloc(sizeof(*phy
), GFP_KERNEL
);
393 phy
->number
= number
;
395 device_initialize(&phy
->dev
);
396 phy
->dev
.parent
= get_device(parent
);
397 phy
->dev
.release
= sas_phy_release
;
398 INIT_LIST_HEAD(&phy
->port_siblings
);
399 if (scsi_is_sas_expander_device(parent
)) {
400 struct sas_rphy
*rphy
= dev_to_rphy(parent
);
401 sprintf(phy
->dev
.bus_id
, "phy-%d:%d:%d", shost
->host_no
,
402 rphy
->scsi_target_id
, number
);
404 sprintf(phy
->dev
.bus_id
, "phy-%d:%d", shost
->host_no
, number
);
406 transport_setup_device(&phy
->dev
);
410 EXPORT_SYMBOL(sas_phy_alloc
);
413 * sas_phy_add -- add a SAS PHY to the device hierachy
414 * @phy: The PHY to be added
416 * Publishes a SAS PHY to the rest of the system.
418 int sas_phy_add(struct sas_phy
*phy
)
422 error
= device_add(&phy
->dev
);
424 transport_add_device(&phy
->dev
);
425 transport_configure_device(&phy
->dev
);
430 EXPORT_SYMBOL(sas_phy_add
);
433 * sas_phy_free -- free a SAS PHY
434 * @phy: SAS PHY to free
436 * Frees the specified SAS PHY.
439 * This function must only be called on a PHY that has not
440 * sucessfully been added using sas_phy_add().
442 void sas_phy_free(struct sas_phy
*phy
)
444 transport_destroy_device(&phy
->dev
);
445 put_device(&phy
->dev
);
447 EXPORT_SYMBOL(sas_phy_free
);
450 * sas_phy_delete -- remove SAS PHY
451 * @phy: SAS PHY to remove
453 * Removes the specified SAS PHY. If the SAS PHY has an
454 * associated remote PHY it is removed before.
457 sas_phy_delete(struct sas_phy
*phy
)
459 struct device
*dev
= &phy
->dev
;
461 /* this happens if the phy is still part of a port when deleted */
462 BUG_ON(!list_empty(&phy
->port_siblings
));
464 transport_remove_device(dev
);
466 transport_destroy_device(dev
);
469 EXPORT_SYMBOL(sas_phy_delete
);
472 * scsi_is_sas_phy -- check if a struct device represents a SAS PHY
473 * @dev: device to check
476 * %1 if the device represents a SAS PHY, %0 else
478 int scsi_is_sas_phy(const struct device
*dev
)
480 return dev
->release
== sas_phy_release
;
482 EXPORT_SYMBOL(scsi_is_sas_phy
);
485 * SAS Port attributes
487 #define sas_port_show_simple(field, name, format_string, cast) \
489 show_sas_port_##name(struct class_device *cdev, char *buf) \
491 struct sas_port *port = transport_class_to_sas_port(cdev); \
493 return snprintf(buf, 20, format_string, cast port->field); \
496 #define sas_port_simple_attr(field, name, format_string, type) \
497 sas_port_show_simple(field, name, format_string, (type)) \
498 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
500 sas_port_simple_attr(num_phys
, num_phys
, "%d\n", int);
502 static DECLARE_TRANSPORT_CLASS(sas_port_class
,
503 "sas_port", NULL
, NULL
, NULL
);
505 static int sas_port_match(struct attribute_container
*cont
, struct device
*dev
)
507 struct Scsi_Host
*shost
;
508 struct sas_internal
*i
;
510 if (!scsi_is_sas_port(dev
))
512 shost
= dev_to_shost(dev
->parent
);
514 if (!shost
->transportt
)
516 if (shost
->transportt
->host_attrs
.ac
.class !=
517 &sas_host_class
.class)
520 i
= to_sas_internal(shost
->transportt
);
521 return &i
->port_attr_cont
.ac
== cont
;
525 static void sas_port_release(struct device
*dev
)
527 struct sas_port
*port
= dev_to_sas_port(dev
);
529 BUG_ON(!list_empty(&port
->phy_list
));
531 put_device(dev
->parent
);
535 static void sas_port_create_link(struct sas_port
*port
,
538 sysfs_create_link(&port
->dev
.kobj
, &phy
->dev
.kobj
, phy
->dev
.bus_id
);
539 sysfs_create_link(&phy
->dev
.kobj
, &port
->dev
.kobj
, "port");
542 static void sas_port_delete_link(struct sas_port
*port
,
545 sysfs_remove_link(&port
->dev
.kobj
, phy
->dev
.bus_id
);
546 sysfs_remove_link(&phy
->dev
.kobj
, "port");
549 /** sas_port_alloc - allocate and initialize a SAS port structure
551 * @parent: parent device
552 * @port_id: port number
554 * Allocates a SAS port structure. It will be added to the device tree
555 * below the device specified by @parent which must be either a Scsi_Host
556 * or a sas_expander_device.
558 * Returns %NULL on error
560 struct sas_port
*sas_port_alloc(struct device
*parent
, int port_id
)
562 struct Scsi_Host
*shost
= dev_to_shost(parent
);
563 struct sas_port
*port
;
565 port
= kzalloc(sizeof(*port
), GFP_KERNEL
);
569 port
->port_identifier
= port_id
;
571 device_initialize(&port
->dev
);
573 port
->dev
.parent
= get_device(parent
);
574 port
->dev
.release
= sas_port_release
;
576 mutex_init(&port
->phy_list_mutex
);
577 INIT_LIST_HEAD(&port
->phy_list
);
579 if (scsi_is_sas_expander_device(parent
)) {
580 struct sas_rphy
*rphy
= dev_to_rphy(parent
);
581 sprintf(port
->dev
.bus_id
, "port-%d:%d:%d", shost
->host_no
,
582 rphy
->scsi_target_id
, port
->port_identifier
);
584 sprintf(port
->dev
.bus_id
, "port-%d:%d", shost
->host_no
,
585 port
->port_identifier
);
587 transport_setup_device(&port
->dev
);
591 EXPORT_SYMBOL(sas_port_alloc
);
594 * sas_port_add - add a SAS port to the device hierarchy
596 * @port: port to be added
598 * publishes a port to the rest of the system
600 int sas_port_add(struct sas_port
*port
)
604 /* No phys should be added until this is made visible */
605 BUG_ON(!list_empty(&port
->phy_list
));
607 error
= device_add(&port
->dev
);
612 transport_add_device(&port
->dev
);
613 transport_configure_device(&port
->dev
);
617 EXPORT_SYMBOL(sas_port_add
);
620 * sas_port_free -- free a SAS PORT
621 * @port: SAS PORT to free
623 * Frees the specified SAS PORT.
626 * This function must only be called on a PORT that has not
627 * sucessfully been added using sas_port_add().
629 void sas_port_free(struct sas_port
*port
)
631 transport_destroy_device(&port
->dev
);
632 put_device(&port
->dev
);
634 EXPORT_SYMBOL(sas_port_free
);
637 * sas_port_delete -- remove SAS PORT
638 * @port: SAS PORT to remove
640 * Removes the specified SAS PORT. If the SAS PORT has an
641 * associated phys, unlink them from the port as well.
643 void sas_port_delete(struct sas_port
*port
)
645 struct device
*dev
= &port
->dev
;
646 struct sas_phy
*phy
, *tmp_phy
;
649 sas_rphy_delete(port
->rphy
);
653 mutex_lock(&port
->phy_list_mutex
);
654 list_for_each_entry_safe(phy
, tmp_phy
, &port
->phy_list
,
656 sas_port_delete_link(port
, phy
);
657 list_del_init(&phy
->port_siblings
);
659 mutex_unlock(&port
->phy_list_mutex
);
661 transport_remove_device(dev
);
663 transport_destroy_device(dev
);
666 EXPORT_SYMBOL(sas_port_delete
);
669 * scsi_is_sas_port -- check if a struct device represents a SAS port
670 * @dev: device to check
673 * %1 if the device represents a SAS Port, %0 else
675 int scsi_is_sas_port(const struct device
*dev
)
677 return dev
->release
== sas_port_release
;
679 EXPORT_SYMBOL(scsi_is_sas_port
);
682 * sas_port_add_phy - add another phy to a port to form a wide port
683 * @port: port to add the phy to
686 * When a port is initially created, it is empty (has no phys). All
687 * ports must have at least one phy to operated, and all wide ports
688 * must have at least two. The current code makes no difference
689 * between ports and wide ports, but the only object that can be
690 * connected to a remote device is a port, so ports must be formed on
691 * all devices with phys if they're connected to anything.
693 void sas_port_add_phy(struct sas_port
*port
, struct sas_phy
*phy
)
695 mutex_lock(&port
->phy_list_mutex
);
696 if (unlikely(!list_empty(&phy
->port_siblings
))) {
697 /* make sure we're already on this port */
700 list_for_each_entry(tmp
, &port
->phy_list
, port_siblings
)
703 /* If this trips, you added a phy that was already
704 * part of a different port */
705 if (unlikely(tmp
!= phy
)) {
706 dev_printk(KERN_ERR
, &port
->dev
, "trying to add phy %s fails: it's already part of another port\n", phy
->dev
.bus_id
);
710 sas_port_create_link(port
, phy
);
711 list_add_tail(&phy
->port_siblings
, &port
->phy_list
);
714 mutex_unlock(&port
->phy_list_mutex
);
716 EXPORT_SYMBOL(sas_port_add_phy
);
719 * sas_port_delete_phy - remove a phy from a port or wide port
720 * @port: port to remove the phy from
721 * @phy: phy to remove
723 * This operation is used for tearing down ports again. It must be
724 * done to every port or wide port before calling sas_port_delete.
726 void sas_port_delete_phy(struct sas_port
*port
, struct sas_phy
*phy
)
728 mutex_lock(&port
->phy_list_mutex
);
729 sas_port_delete_link(port
, phy
);
730 list_del_init(&phy
->port_siblings
);
732 mutex_unlock(&port
->phy_list_mutex
);
734 EXPORT_SYMBOL(sas_port_delete_phy
);
737 * SAS remote PHY attributes.
740 #define sas_rphy_show_simple(field, name, format_string, cast) \
742 show_sas_rphy_##name(struct class_device *cdev, char *buf) \
744 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
746 return snprintf(buf, 20, format_string, cast rphy->field); \
749 #define sas_rphy_simple_attr(field, name, format_string, type) \
750 sas_rphy_show_simple(field, name, format_string, (type)) \
751 static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
752 show_sas_rphy_##name, NULL)
754 #define sas_rphy_show_protocol(field, name) \
756 show_sas_rphy_##name(struct class_device *cdev, char *buf) \
758 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
761 return snprintf(buf, 20, "none\n"); \
762 return get_sas_protocol_names(rphy->field, buf); \
765 #define sas_rphy_protocol_attr(field, name) \
766 sas_rphy_show_protocol(field, name) \
767 static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
768 show_sas_rphy_##name, NULL)
771 show_sas_rphy_device_type(struct class_device
*cdev
, char *buf
)
773 struct sas_rphy
*rphy
= transport_class_to_rphy(cdev
);
775 if (!rphy
->identify
.device_type
)
776 return snprintf(buf
, 20, "none\n");
777 return get_sas_device_type_names(
778 rphy
->identify
.device_type
, buf
);
781 static SAS_CLASS_DEVICE_ATTR(rphy
, device_type
, S_IRUGO
,
782 show_sas_rphy_device_type
, NULL
);
785 show_sas_rphy_enclosure_identifier(struct class_device
*cdev
, char *buf
)
787 struct sas_rphy
*rphy
= transport_class_to_rphy(cdev
);
788 struct sas_phy
*phy
= dev_to_phy(rphy
->dev
.parent
);
789 struct Scsi_Host
*shost
= dev_to_shost(phy
->dev
.parent
);
790 struct sas_internal
*i
= to_sas_internal(shost
->transportt
);
795 * Only devices behind an expander are supported, because the
796 * enclosure identifier is a SMP feature.
798 if (phy
->local_attached
)
801 error
= i
->f
->get_enclosure_identifier(rphy
, &identifier
);
804 return sprintf(buf
, "0x%llx\n", (unsigned long long)identifier
);
807 static SAS_CLASS_DEVICE_ATTR(rphy
, enclosure_identifier
, S_IRUGO
,
808 show_sas_rphy_enclosure_identifier
, NULL
);
811 show_sas_rphy_bay_identifier(struct class_device
*cdev
, char *buf
)
813 struct sas_rphy
*rphy
= transport_class_to_rphy(cdev
);
814 struct sas_phy
*phy
= dev_to_phy(rphy
->dev
.parent
);
815 struct Scsi_Host
*shost
= dev_to_shost(phy
->dev
.parent
);
816 struct sas_internal
*i
= to_sas_internal(shost
->transportt
);
819 if (phy
->local_attached
)
822 val
= i
->f
->get_bay_identifier(rphy
);
825 return sprintf(buf
, "%d\n", val
);
828 static SAS_CLASS_DEVICE_ATTR(rphy
, bay_identifier
, S_IRUGO
,
829 show_sas_rphy_bay_identifier
, NULL
);
831 sas_rphy_protocol_attr(identify
.initiator_port_protocols
,
832 initiator_port_protocols
);
833 sas_rphy_protocol_attr(identify
.target_port_protocols
, target_port_protocols
);
834 sas_rphy_simple_attr(identify
.sas_address
, sas_address
, "0x%016llx\n",
836 sas_rphy_simple_attr(identify
.phy_identifier
, phy_identifier
, "%d\n", u8
);
838 /* only need 8 bytes of data plus header (4 or 8) */
841 int sas_read_port_mode_page(struct scsi_device
*sdev
)
843 char *buffer
= kzalloc(BUF_SIZE
, GFP_KERNEL
), *msdata
;
844 struct sas_rphy
*rphy
= target_to_rphy(sdev
->sdev_target
);
845 struct sas_end_device
*rdev
;
846 struct scsi_mode_data mode_data
;
849 BUG_ON(rphy
->identify
.device_type
!= SAS_END_DEVICE
);
851 rdev
= rphy_to_end_device(rphy
);
856 res
= scsi_mode_sense(sdev
, 1, 0x19, buffer
, BUF_SIZE
, 30*HZ
, 3,
860 if (!scsi_status_is_good(res
))
863 msdata
= buffer
+ mode_data
.header_length
+
864 mode_data
.block_descriptor_length
;
866 if (msdata
- buffer
> BUF_SIZE
- 8)
871 rdev
->ready_led_meaning
= msdata
[2] & 0x10 ? 1 : 0;
872 rdev
->I_T_nexus_loss_timeout
= (msdata
[4] << 8) + msdata
[5];
873 rdev
->initiator_response_timeout
= (msdata
[6] << 8) + msdata
[7];
879 EXPORT_SYMBOL(sas_read_port_mode_page
);
881 static DECLARE_TRANSPORT_CLASS(sas_end_dev_class
,
882 "sas_end_device", NULL
, NULL
, NULL
);
884 #define sas_end_dev_show_simple(field, name, format_string, cast) \
886 show_sas_end_dev_##name(struct class_device *cdev, char *buf) \
888 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
889 struct sas_end_device *rdev = rphy_to_end_device(rphy); \
891 return snprintf(buf, 20, format_string, cast rdev->field); \
894 #define sas_end_dev_simple_attr(field, name, format_string, type) \
895 sas_end_dev_show_simple(field, name, format_string, (type)) \
896 static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
897 show_sas_end_dev_##name, NULL)
899 sas_end_dev_simple_attr(ready_led_meaning
, ready_led_meaning
, "%d\n", int);
900 sas_end_dev_simple_attr(I_T_nexus_loss_timeout
, I_T_nexus_loss_timeout
,
902 sas_end_dev_simple_attr(initiator_response_timeout
, initiator_response_timeout
,
905 static DECLARE_TRANSPORT_CLASS(sas_expander_class
,
906 "sas_expander", NULL
, NULL
, NULL
);
908 #define sas_expander_show_simple(field, name, format_string, cast) \
910 show_sas_expander_##name(struct class_device *cdev, char *buf) \
912 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
913 struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
915 return snprintf(buf, 20, format_string, cast edev->field); \
918 #define sas_expander_simple_attr(field, name, format_string, type) \
919 sas_expander_show_simple(field, name, format_string, (type)) \
920 static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \
921 show_sas_expander_##name, NULL)
923 sas_expander_simple_attr(vendor_id
, vendor_id
, "%s\n", char *);
924 sas_expander_simple_attr(product_id
, product_id
, "%s\n", char *);
925 sas_expander_simple_attr(product_rev
, product_rev
, "%s\n", char *);
926 sas_expander_simple_attr(component_vendor_id
, component_vendor_id
,
928 sas_expander_simple_attr(component_id
, component_id
, "%u\n", unsigned int);
929 sas_expander_simple_attr(component_revision_id
, component_revision_id
, "%u\n",
931 sas_expander_simple_attr(level
, level
, "%d\n", int);
933 static DECLARE_TRANSPORT_CLASS(sas_rphy_class
,
934 "sas_device", NULL
, NULL
, NULL
);
936 static int sas_rphy_match(struct attribute_container
*cont
, struct device
*dev
)
938 struct Scsi_Host
*shost
;
939 struct sas_internal
*i
;
941 if (!scsi_is_sas_rphy(dev
))
943 shost
= dev_to_shost(dev
->parent
->parent
);
945 if (!shost
->transportt
)
947 if (shost
->transportt
->host_attrs
.ac
.class !=
948 &sas_host_class
.class)
951 i
= to_sas_internal(shost
->transportt
);
952 return &i
->rphy_attr_cont
.ac
== cont
;
955 static int sas_end_dev_match(struct attribute_container
*cont
,
958 struct Scsi_Host
*shost
;
959 struct sas_internal
*i
;
960 struct sas_rphy
*rphy
;
962 if (!scsi_is_sas_rphy(dev
))
964 shost
= dev_to_shost(dev
->parent
->parent
);
965 rphy
= dev_to_rphy(dev
);
967 if (!shost
->transportt
)
969 if (shost
->transportt
->host_attrs
.ac
.class !=
970 &sas_host_class
.class)
973 i
= to_sas_internal(shost
->transportt
);
974 return &i
->end_dev_attr_cont
.ac
== cont
&&
975 rphy
->identify
.device_type
== SAS_END_DEVICE
;
978 static int sas_expander_match(struct attribute_container
*cont
,
981 struct Scsi_Host
*shost
;
982 struct sas_internal
*i
;
983 struct sas_rphy
*rphy
;
985 if (!scsi_is_sas_rphy(dev
))
987 shost
= dev_to_shost(dev
->parent
->parent
);
988 rphy
= dev_to_rphy(dev
);
990 if (!shost
->transportt
)
992 if (shost
->transportt
->host_attrs
.ac
.class !=
993 &sas_host_class
.class)
996 i
= to_sas_internal(shost
->transportt
);
997 return &i
->expander_attr_cont
.ac
== cont
&&
998 (rphy
->identify
.device_type
== SAS_EDGE_EXPANDER_DEVICE
||
999 rphy
->identify
.device_type
== SAS_FANOUT_EXPANDER_DEVICE
);
1002 static void sas_expander_release(struct device
*dev
)
1004 struct sas_rphy
*rphy
= dev_to_rphy(dev
);
1005 struct sas_expander_device
*edev
= rphy_to_expander_device(rphy
);
1007 put_device(dev
->parent
);
1011 static void sas_end_device_release(struct device
*dev
)
1013 struct sas_rphy
*rphy
= dev_to_rphy(dev
);
1014 struct sas_end_device
*edev
= rphy_to_end_device(rphy
);
1016 put_device(dev
->parent
);
1021 * sas_rphy_initialize - common rphy intialization
1022 * @rphy: rphy to initialise
1024 * Used by both sas_end_device_alloc() and sas_expander_alloc() to
1025 * initialise the common rphy component of each.
1027 static void sas_rphy_initialize(struct sas_rphy
*rphy
)
1029 INIT_LIST_HEAD(&rphy
->list
);
1033 * sas_end_device_alloc - allocate an rphy for an end device
1035 * Allocates an SAS remote PHY structure, connected to @parent.
1038 * SAS PHY allocated or %NULL if the allocation failed.
1040 struct sas_rphy
*sas_end_device_alloc(struct sas_port
*parent
)
1042 struct Scsi_Host
*shost
= dev_to_shost(&parent
->dev
);
1043 struct sas_end_device
*rdev
;
1045 rdev
= kzalloc(sizeof(*rdev
), GFP_KERNEL
);
1050 device_initialize(&rdev
->rphy
.dev
);
1051 rdev
->rphy
.dev
.parent
= get_device(&parent
->dev
);
1052 rdev
->rphy
.dev
.release
= sas_end_device_release
;
1053 if (scsi_is_sas_expander_device(parent
->dev
.parent
)) {
1054 struct sas_rphy
*rphy
= dev_to_rphy(parent
->dev
.parent
);
1055 sprintf(rdev
->rphy
.dev
.bus_id
, "end_device-%d:%d:%d",
1056 shost
->host_no
, rphy
->scsi_target_id
, parent
->port_identifier
);
1058 sprintf(rdev
->rphy
.dev
.bus_id
, "end_device-%d:%d",
1059 shost
->host_no
, parent
->port_identifier
);
1060 rdev
->rphy
.identify
.device_type
= SAS_END_DEVICE
;
1061 sas_rphy_initialize(&rdev
->rphy
);
1062 transport_setup_device(&rdev
->rphy
.dev
);
1066 EXPORT_SYMBOL(sas_end_device_alloc
);
1069 * sas_expander_alloc - allocate an rphy for an end device
1071 * Allocates an SAS remote PHY structure, connected to @parent.
1074 * SAS PHY allocated or %NULL if the allocation failed.
1076 struct sas_rphy
*sas_expander_alloc(struct sas_port
*parent
,
1077 enum sas_device_type type
)
1079 struct Scsi_Host
*shost
= dev_to_shost(&parent
->dev
);
1080 struct sas_expander_device
*rdev
;
1081 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
1083 BUG_ON(type
!= SAS_EDGE_EXPANDER_DEVICE
&&
1084 type
!= SAS_FANOUT_EXPANDER_DEVICE
);
1086 rdev
= kzalloc(sizeof(*rdev
), GFP_KERNEL
);
1091 device_initialize(&rdev
->rphy
.dev
);
1092 rdev
->rphy
.dev
.parent
= get_device(&parent
->dev
);
1093 rdev
->rphy
.dev
.release
= sas_expander_release
;
1094 mutex_lock(&sas_host
->lock
);
1095 rdev
->rphy
.scsi_target_id
= sas_host
->next_expander_id
++;
1096 mutex_unlock(&sas_host
->lock
);
1097 sprintf(rdev
->rphy
.dev
.bus_id
, "expander-%d:%d",
1098 shost
->host_no
, rdev
->rphy
.scsi_target_id
);
1099 rdev
->rphy
.identify
.device_type
= type
;
1100 sas_rphy_initialize(&rdev
->rphy
);
1101 transport_setup_device(&rdev
->rphy
.dev
);
1105 EXPORT_SYMBOL(sas_expander_alloc
);
1108 * sas_rphy_add -- add a SAS remote PHY to the device hierachy
1109 * @rphy: The remote PHY to be added
1111 * Publishes a SAS remote PHY to the rest of the system.
1113 int sas_rphy_add(struct sas_rphy
*rphy
)
1115 struct sas_port
*parent
= dev_to_sas_port(rphy
->dev
.parent
);
1116 struct Scsi_Host
*shost
= dev_to_shost(parent
->dev
.parent
);
1117 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
1118 struct sas_identify
*identify
= &rphy
->identify
;
1123 parent
->rphy
= rphy
;
1125 error
= device_add(&rphy
->dev
);
1128 transport_add_device(&rphy
->dev
);
1129 transport_configure_device(&rphy
->dev
);
1131 mutex_lock(&sas_host
->lock
);
1132 list_add_tail(&rphy
->list
, &sas_host
->rphy_list
);
1133 if (identify
->device_type
== SAS_END_DEVICE
&&
1134 (identify
->target_port_protocols
&
1135 (SAS_PROTOCOL_SSP
|SAS_PROTOCOL_STP
|SAS_PROTOCOL_SATA
)))
1136 rphy
->scsi_target_id
= sas_host
->next_target_id
++;
1137 else if (identify
->device_type
== SAS_END_DEVICE
)
1138 rphy
->scsi_target_id
= -1;
1139 mutex_unlock(&sas_host
->lock
);
1141 if (identify
->device_type
== SAS_END_DEVICE
&&
1142 rphy
->scsi_target_id
!= -1) {
1143 scsi_scan_target(&rphy
->dev
, parent
->port_identifier
,
1144 rphy
->scsi_target_id
, ~0, 0);
1149 EXPORT_SYMBOL(sas_rphy_add
);
1152 * sas_rphy_free -- free a SAS remote PHY
1153 * @rphy SAS remote PHY to free
1155 * Frees the specified SAS remote PHY.
1158 * This function must only be called on a remote
1159 * PHY that has not sucessfully been added using
1162 void sas_rphy_free(struct sas_rphy
*rphy
)
1164 struct device
*dev
= &rphy
->dev
;
1165 struct Scsi_Host
*shost
= dev_to_shost(rphy
->dev
.parent
->parent
);
1166 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
1168 mutex_lock(&sas_host
->lock
);
1169 list_del(&rphy
->list
);
1170 mutex_unlock(&sas_host
->lock
);
1172 transport_destroy_device(dev
);
1176 EXPORT_SYMBOL(sas_rphy_free
);
1179 * sas_rphy_delete -- remove SAS remote PHY
1180 * @rphy: SAS remote PHY to remove
1182 * Removes the specified SAS remote PHY.
1185 sas_rphy_delete(struct sas_rphy
*rphy
)
1187 struct device
*dev
= &rphy
->dev
;
1188 struct sas_port
*parent
= dev_to_sas_port(dev
->parent
);
1189 struct Scsi_Host
*shost
= dev_to_shost(parent
->dev
.parent
);
1190 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
1192 switch (rphy
->identify
.device_type
) {
1193 case SAS_END_DEVICE
:
1194 scsi_remove_target(dev
);
1196 case SAS_EDGE_EXPANDER_DEVICE
:
1197 case SAS_FANOUT_EXPANDER_DEVICE
:
1198 sas_remove_children(dev
);
1204 transport_remove_device(dev
);
1206 transport_destroy_device(dev
);
1208 mutex_lock(&sas_host
->lock
);
1209 list_del(&rphy
->list
);
1210 mutex_unlock(&sas_host
->lock
);
1212 parent
->rphy
= NULL
;
1216 EXPORT_SYMBOL(sas_rphy_delete
);
1219 * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY
1220 * @dev: device to check
1223 * %1 if the device represents a SAS remote PHY, %0 else
1225 int scsi_is_sas_rphy(const struct device
*dev
)
1227 return dev
->release
== sas_end_device_release
||
1228 dev
->release
== sas_expander_release
;
1230 EXPORT_SYMBOL(scsi_is_sas_rphy
);
1237 static int sas_user_scan(struct Scsi_Host
*shost
, uint channel
,
1240 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
1241 struct sas_rphy
*rphy
;
1243 mutex_lock(&sas_host
->lock
);
1244 list_for_each_entry(rphy
, &sas_host
->rphy_list
, list
) {
1245 struct sas_port
*parent
= dev_to_sas_port(rphy
->dev
.parent
);
1247 if (rphy
->identify
.device_type
!= SAS_END_DEVICE
||
1248 rphy
->scsi_target_id
== -1)
1251 if ((channel
== SCAN_WILD_CARD
|| channel
== parent
->port_identifier
) &&
1252 (id
== SCAN_WILD_CARD
|| id
== rphy
->scsi_target_id
)) {
1253 scsi_scan_target(&rphy
->dev
, parent
->port_identifier
,
1254 rphy
->scsi_target_id
, lun
, 1);
1257 mutex_unlock(&sas_host
->lock
);
1264 * Setup / Teardown code
1267 #define SETUP_TEMPLATE(attrb, field, perm, test) \
1268 i->private_##attrb[count] = class_device_attr_##field; \
1269 i->private_##attrb[count].attr.mode = perm; \
1270 i->attrb[count] = &i->private_##attrb[count]; \
1275 #define SETUP_RPORT_ATTRIBUTE(field) \
1276 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
1278 #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
1279 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
1281 #define SETUP_PHY_ATTRIBUTE(field) \
1282 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
1284 #define SETUP_PORT_ATTRIBUTE(field) \
1285 SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
1287 #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \
1288 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
1290 #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \
1291 SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, 1)
1293 #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \
1294 SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, i->f->func)
1296 #define SETUP_END_DEV_ATTRIBUTE(field) \
1297 SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
1299 #define SETUP_EXPANDER_ATTRIBUTE(field) \
1300 SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
1303 * sas_attach_transport -- instantiate SAS transport template
1304 * @ft: SAS transport class function template
1306 struct scsi_transport_template
*
1307 sas_attach_transport(struct sas_function_template
*ft
)
1309 struct sas_internal
*i
;
1312 i
= kzalloc(sizeof(struct sas_internal
), GFP_KERNEL
);
1316 i
->t
.user_scan
= sas_user_scan
;
1318 i
->t
.host_attrs
.ac
.attrs
= &i
->host_attrs
[0];
1319 i
->t
.host_attrs
.ac
.class = &sas_host_class
.class;
1320 i
->t
.host_attrs
.ac
.match
= sas_host_match
;
1321 transport_container_register(&i
->t
.host_attrs
);
1322 i
->t
.host_size
= sizeof(struct sas_host_attrs
);
1324 i
->phy_attr_cont
.ac
.class = &sas_phy_class
.class;
1325 i
->phy_attr_cont
.ac
.attrs
= &i
->phy_attrs
[0];
1326 i
->phy_attr_cont
.ac
.match
= sas_phy_match
;
1327 transport_container_register(&i
->phy_attr_cont
);
1329 i
->port_attr_cont
.ac
.class = &sas_port_class
.class;
1330 i
->port_attr_cont
.ac
.attrs
= &i
->port_attrs
[0];
1331 i
->port_attr_cont
.ac
.match
= sas_port_match
;
1332 transport_container_register(&i
->port_attr_cont
);
1334 i
->rphy_attr_cont
.ac
.class = &sas_rphy_class
.class;
1335 i
->rphy_attr_cont
.ac
.attrs
= &i
->rphy_attrs
[0];
1336 i
->rphy_attr_cont
.ac
.match
= sas_rphy_match
;
1337 transport_container_register(&i
->rphy_attr_cont
);
1339 i
->end_dev_attr_cont
.ac
.class = &sas_end_dev_class
.class;
1340 i
->end_dev_attr_cont
.ac
.attrs
= &i
->end_dev_attrs
[0];
1341 i
->end_dev_attr_cont
.ac
.match
= sas_end_dev_match
;
1342 transport_container_register(&i
->end_dev_attr_cont
);
1344 i
->expander_attr_cont
.ac
.class = &sas_expander_class
.class;
1345 i
->expander_attr_cont
.ac
.attrs
= &i
->expander_attrs
[0];
1346 i
->expander_attr_cont
.ac
.match
= sas_expander_match
;
1347 transport_container_register(&i
->expander_attr_cont
);
1352 SETUP_PORT_ATTRIBUTE(num_phys
);
1353 i
->host_attrs
[count
] = NULL
;
1356 SETUP_PHY_ATTRIBUTE(initiator_port_protocols
);
1357 SETUP_PHY_ATTRIBUTE(target_port_protocols
);
1358 SETUP_PHY_ATTRIBUTE(device_type
);
1359 SETUP_PHY_ATTRIBUTE(sas_address
);
1360 SETUP_PHY_ATTRIBUTE(phy_identifier
);
1361 //SETUP_PHY_ATTRIBUTE(port_identifier);
1362 SETUP_PHY_ATTRIBUTE(negotiated_linkrate
);
1363 SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw
);
1364 SETUP_PHY_ATTRIBUTE(minimum_linkrate
);
1365 SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw
);
1366 SETUP_PHY_ATTRIBUTE(maximum_linkrate
);
1368 SETUP_PHY_ATTRIBUTE(invalid_dword_count
);
1369 SETUP_PHY_ATTRIBUTE(running_disparity_error_count
);
1370 SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count
);
1371 SETUP_PHY_ATTRIBUTE(phy_reset_problem_count
);
1372 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset
, phy_reset
);
1373 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset
, phy_reset
);
1374 i
->phy_attrs
[count
] = NULL
;
1377 SETUP_PORT_ATTRIBUTE(num_phys
);
1378 i
->port_attrs
[count
] = NULL
;
1381 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols
);
1382 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols
);
1383 SETUP_RPORT_ATTRIBUTE(rphy_device_type
);
1384 SETUP_RPORT_ATTRIBUTE(rphy_sas_address
);
1385 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier
);
1386 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier
,
1387 get_enclosure_identifier
);
1388 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier
,
1389 get_bay_identifier
);
1390 i
->rphy_attrs
[count
] = NULL
;
1393 SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning
);
1394 SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout
);
1395 SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout
);
1396 i
->end_dev_attrs
[count
] = NULL
;
1399 SETUP_EXPANDER_ATTRIBUTE(vendor_id
);
1400 SETUP_EXPANDER_ATTRIBUTE(product_id
);
1401 SETUP_EXPANDER_ATTRIBUTE(product_rev
);
1402 SETUP_EXPANDER_ATTRIBUTE(component_vendor_id
);
1403 SETUP_EXPANDER_ATTRIBUTE(component_id
);
1404 SETUP_EXPANDER_ATTRIBUTE(component_revision_id
);
1405 SETUP_EXPANDER_ATTRIBUTE(level
);
1406 i
->expander_attrs
[count
] = NULL
;
1410 EXPORT_SYMBOL(sas_attach_transport
);
1413 * sas_release_transport -- release SAS transport template instance
1414 * @t: transport template instance
1416 void sas_release_transport(struct scsi_transport_template
*t
)
1418 struct sas_internal
*i
= to_sas_internal(t
);
1420 transport_container_unregister(&i
->t
.host_attrs
);
1421 transport_container_unregister(&i
->phy_attr_cont
);
1422 transport_container_unregister(&i
->port_attr_cont
);
1423 transport_container_unregister(&i
->rphy_attr_cont
);
1424 transport_container_unregister(&i
->end_dev_attr_cont
);
1425 transport_container_unregister(&i
->expander_attr_cont
);
1429 EXPORT_SYMBOL(sas_release_transport
);
1431 static __init
int sas_transport_init(void)
1435 error
= transport_class_register(&sas_host_class
);
1438 error
= transport_class_register(&sas_phy_class
);
1440 goto out_unregister_transport
;
1441 error
= transport_class_register(&sas_port_class
);
1443 goto out_unregister_phy
;
1444 error
= transport_class_register(&sas_rphy_class
);
1446 goto out_unregister_port
;
1447 error
= transport_class_register(&sas_end_dev_class
);
1449 goto out_unregister_rphy
;
1450 error
= transport_class_register(&sas_expander_class
);
1452 goto out_unregister_end_dev
;
1456 out_unregister_end_dev
:
1457 transport_class_unregister(&sas_end_dev_class
);
1458 out_unregister_rphy
:
1459 transport_class_unregister(&sas_rphy_class
);
1460 out_unregister_port
:
1461 transport_class_unregister(&sas_port_class
);
1463 transport_class_unregister(&sas_phy_class
);
1464 out_unregister_transport
:
1465 transport_class_unregister(&sas_host_class
);
1471 static void __exit
sas_transport_exit(void)
1473 transport_class_unregister(&sas_host_class
);
1474 transport_class_unregister(&sas_phy_class
);
1475 transport_class_unregister(&sas_port_class
);
1476 transport_class_unregister(&sas_rphy_class
);
1477 transport_class_unregister(&sas_end_dev_class
);
1478 transport_class_unregister(&sas_expander_class
);
1481 MODULE_AUTHOR("Christoph Hellwig");
1482 MODULE_DESCRIPTION("SAS Transphy Attributes");
1483 MODULE_LICENSE("GPL");
1485 module_init(sas_transport_init
);
1486 module_exit(sas_transport_exit
);