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>
29 #include <linux/slab.h>
30 #include <linux/string.h>
32 #include <scsi/scsi_device.h>
33 #include <scsi/scsi_host.h>
34 #include <scsi/scsi_transport.h>
35 #include <scsi/scsi_transport_sas.h>
38 #define SAS_HOST_ATTRS 0
39 #define SAS_PORT_ATTRS 17
40 #define SAS_RPORT_ATTRS 5
43 struct scsi_transport_template t
;
44 struct sas_function_template
*f
;
46 struct class_device_attribute private_host_attrs
[SAS_HOST_ATTRS
];
47 struct class_device_attribute private_phy_attrs
[SAS_PORT_ATTRS
];
48 struct class_device_attribute private_rphy_attrs
[SAS_RPORT_ATTRS
];
50 struct transport_container phy_attr_cont
;
51 struct transport_container rphy_attr_cont
;
54 * The array of null terminated pointers to attributes
55 * needed by scsi_sysfs.c
57 struct class_device_attribute
*host_attrs
[SAS_HOST_ATTRS
+ 1];
58 struct class_device_attribute
*phy_attrs
[SAS_PORT_ATTRS
+ 1];
59 struct class_device_attribute
*rphy_attrs
[SAS_RPORT_ATTRS
+ 1];
61 #define to_sas_internal(tmpl) container_of(tmpl, struct sas_internal, t)
63 struct sas_host_attrs
{
64 struct list_head rphy_list
;
68 #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
72 * Hack to allow attributes of the same name in different objects.
74 #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
75 struct class_device_attribute class_device_attr_##_prefix##_##_name = \
76 __ATTR(_name,_mode,_show,_store)
80 * Pretty printing helpers
83 #define sas_bitfield_name_match(title, table) \
85 get_sas_##title##_names(u32 table_key, char *buf) \
91 for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
92 if (table[i].value & table_key) { \
93 len += sprintf(buf + len, "%s%s", \
94 prefix, table[i].name); \
98 len += sprintf(buf + len, "\n"); \
102 #define sas_bitfield_name_search(title, table) \
104 get_sas_##title##_names(u32 table_key, char *buf) \
109 for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
110 if (table[i].value == table_key) { \
111 len += sprintf(buf + len, "%s", \
116 len += sprintf(buf + len, "\n"); \
123 } sas_device_type_names
[] = {
124 { SAS_PHY_UNUSED
, "unused" },
125 { SAS_END_DEVICE
, "end device" },
126 { SAS_EDGE_EXPANDER_DEVICE
, "edge expander" },
127 { SAS_FANOUT_EXPANDER_DEVICE
, "fanout expander" },
129 sas_bitfield_name_search(device_type
, sas_device_type_names
)
135 } sas_protocol_names
[] = {
136 { SAS_PROTOCOL_SATA
, "sata" },
137 { SAS_PROTOCOL_SMP
, "smp" },
138 { SAS_PROTOCOL_STP
, "stp" },
139 { SAS_PROTOCOL_SSP
, "ssp" },
141 sas_bitfield_name_match(protocol
, sas_protocol_names
)
146 } sas_linkspeed_names
[] = {
147 { SAS_LINK_RATE_UNKNOWN
, "Unknown" },
148 { SAS_PHY_DISABLED
, "Phy disabled" },
149 { SAS_LINK_RATE_FAILED
, "Link Rate failed" },
150 { SAS_SATA_SPINUP_HOLD
, "Spin-up hold" },
151 { SAS_LINK_RATE_1_5_GBPS
, "1.5 Gbit" },
152 { SAS_LINK_RATE_3_0_GBPS
, "3.0 Gbit" },
154 sas_bitfield_name_search(linkspeed
, sas_linkspeed_names
)
158 * SAS host attributes
161 static int sas_host_setup(struct transport_container
*tc
, struct device
*dev
,
162 struct class_device
*cdev
)
164 struct Scsi_Host
*shost
= dev_to_shost(dev
);
165 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
167 INIT_LIST_HEAD(&sas_host
->rphy_list
);
168 spin_lock_init(&sas_host
->lock
);
169 sas_host
->next_target_id
= 0;
173 static DECLARE_TRANSPORT_CLASS(sas_host_class
,
174 "sas_host", sas_host_setup
, NULL
, NULL
);
176 static int sas_host_match(struct attribute_container
*cont
,
179 struct Scsi_Host
*shost
;
180 struct sas_internal
*i
;
182 if (!scsi_is_host_device(dev
))
184 shost
= dev_to_shost(dev
);
186 if (!shost
->transportt
)
188 if (shost
->transportt
->host_attrs
.ac
.class !=
189 &sas_host_class
.class)
192 i
= to_sas_internal(shost
->transportt
);
193 return &i
->t
.host_attrs
.ac
== cont
;
196 static int do_sas_phy_delete(struct device
*dev
, void *data
)
198 if (scsi_is_sas_phy(dev
))
199 sas_phy_delete(dev_to_phy(dev
));
204 * sas_remove_host -- tear down a Scsi_Host's SAS data structures
205 * @shost: Scsi Host that is torn down
207 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
208 * Must be called just before scsi_remove_host for SAS HBAs.
210 void sas_remove_host(struct Scsi_Host
*shost
)
212 device_for_each_child(&shost
->shost_gendev
, NULL
, do_sas_phy_delete
);
214 EXPORT_SYMBOL(sas_remove_host
);
218 * SAS Port attributes
221 #define sas_phy_show_simple(field, name, format_string, cast) \
223 show_sas_phy_##name(struct class_device *cdev, char *buf) \
225 struct sas_phy *phy = transport_class_to_phy(cdev); \
227 return snprintf(buf, 20, format_string, cast phy->field); \
230 #define sas_phy_simple_attr(field, name, format_string, type) \
231 sas_phy_show_simple(field, name, format_string, (type)) \
232 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
234 #define sas_phy_show_protocol(field, name) \
236 show_sas_phy_##name(struct class_device *cdev, char *buf) \
238 struct sas_phy *phy = transport_class_to_phy(cdev); \
241 return snprintf(buf, 20, "none\n"); \
242 return get_sas_protocol_names(phy->field, buf); \
245 #define sas_phy_protocol_attr(field, name) \
246 sas_phy_show_protocol(field, name) \
247 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
249 #define sas_phy_show_linkspeed(field) \
251 show_sas_phy_##field(struct class_device *cdev, char *buf) \
253 struct sas_phy *phy = transport_class_to_phy(cdev); \
255 return get_sas_linkspeed_names(phy->field, buf); \
258 #define sas_phy_linkspeed_attr(field) \
259 sas_phy_show_linkspeed(field) \
260 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
262 #define sas_phy_show_linkerror(field) \
264 show_sas_phy_##field(struct class_device *cdev, char *buf) \
266 struct sas_phy *phy = transport_class_to_phy(cdev); \
267 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
268 struct sas_internal *i = to_sas_internal(shost->transportt); \
271 if (!phy->local_attached) \
274 error = i->f->get_linkerrors(phy); \
277 return snprintf(buf, 20, "%u\n", phy->field); \
280 #define sas_phy_linkerror_attr(field) \
281 sas_phy_show_linkerror(field) \
282 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
286 show_sas_device_type(struct class_device
*cdev
, char *buf
)
288 struct sas_phy
*phy
= transport_class_to_phy(cdev
);
290 if (!phy
->identify
.device_type
)
291 return snprintf(buf
, 20, "none\n");
292 return get_sas_device_type_names(phy
->identify
.device_type
, buf
);
294 static CLASS_DEVICE_ATTR(device_type
, S_IRUGO
, show_sas_device_type
, NULL
);
296 static ssize_t
do_sas_phy_reset(struct class_device
*cdev
,
297 size_t count
, int hard_reset
)
299 struct sas_phy
*phy
= transport_class_to_phy(cdev
);
300 struct Scsi_Host
*shost
= dev_to_shost(phy
->dev
.parent
);
301 struct sas_internal
*i
= to_sas_internal(shost
->transportt
);
304 if (!phy
->local_attached
)
307 error
= i
->f
->phy_reset(phy
, hard_reset
);
313 static ssize_t
store_sas_link_reset(struct class_device
*cdev
,
314 const char *buf
, size_t count
)
316 return do_sas_phy_reset(cdev
, count
, 0);
318 static CLASS_DEVICE_ATTR(link_reset
, S_IWUSR
, NULL
, store_sas_link_reset
);
320 static ssize_t
store_sas_hard_reset(struct class_device
*cdev
,
321 const char *buf
, size_t count
)
323 return do_sas_phy_reset(cdev
, count
, 1);
325 static CLASS_DEVICE_ATTR(hard_reset
, S_IWUSR
, NULL
, store_sas_hard_reset
);
327 sas_phy_protocol_attr(identify
.initiator_port_protocols
,
328 initiator_port_protocols
);
329 sas_phy_protocol_attr(identify
.target_port_protocols
,
330 target_port_protocols
);
331 sas_phy_simple_attr(identify
.sas_address
, sas_address
, "0x%016llx\n",
333 sas_phy_simple_attr(identify
.phy_identifier
, phy_identifier
, "%d\n", u8
);
334 sas_phy_simple_attr(port_identifier
, port_identifier
, "%d\n", u8
);
335 sas_phy_linkspeed_attr(negotiated_linkrate
);
336 sas_phy_linkspeed_attr(minimum_linkrate_hw
);
337 sas_phy_linkspeed_attr(minimum_linkrate
);
338 sas_phy_linkspeed_attr(maximum_linkrate_hw
);
339 sas_phy_linkspeed_attr(maximum_linkrate
);
340 sas_phy_linkerror_attr(invalid_dword_count
);
341 sas_phy_linkerror_attr(running_disparity_error_count
);
342 sas_phy_linkerror_attr(loss_of_dword_sync_count
);
343 sas_phy_linkerror_attr(phy_reset_problem_count
);
346 static DECLARE_TRANSPORT_CLASS(sas_phy_class
,
347 "sas_phy", NULL
, NULL
, NULL
);
349 static int sas_phy_match(struct attribute_container
*cont
, struct device
*dev
)
351 struct Scsi_Host
*shost
;
352 struct sas_internal
*i
;
354 if (!scsi_is_sas_phy(dev
))
356 shost
= dev_to_shost(dev
->parent
);
358 if (!shost
->transportt
)
360 if (shost
->transportt
->host_attrs
.ac
.class !=
361 &sas_host_class
.class)
364 i
= to_sas_internal(shost
->transportt
);
365 return &i
->phy_attr_cont
.ac
== cont
;
368 static void sas_phy_release(struct device
*dev
)
370 struct sas_phy
*phy
= dev_to_phy(dev
);
372 put_device(dev
->parent
);
377 * sas_phy_alloc -- allocates and initialize a SAS PHY structure
378 * @parent: Parent device
379 * @number: Port number
381 * Allocates an SAS PHY structure. It will be added in the device tree
382 * below the device specified by @parent, which has to be either a Scsi_Host
386 * SAS PHY allocated or %NULL if the allocation failed.
388 struct sas_phy
*sas_phy_alloc(struct device
*parent
, int number
)
390 struct Scsi_Host
*shost
= dev_to_shost(parent
);
393 phy
= kmalloc(sizeof(*phy
), GFP_KERNEL
);
396 memset(phy
, 0, sizeof(*phy
));
400 phy
->number
= number
;
402 device_initialize(&phy
->dev
);
403 phy
->dev
.parent
= get_device(parent
);
404 phy
->dev
.release
= sas_phy_release
;
405 sprintf(phy
->dev
.bus_id
, "phy-%d:%d", shost
->host_no
, number
);
407 transport_setup_device(&phy
->dev
);
411 EXPORT_SYMBOL(sas_phy_alloc
);
414 * sas_phy_add -- add a SAS PHY to the device hierachy
415 * @phy: The PHY to be added
417 * Publishes a SAS PHY to the rest of the system.
419 int sas_phy_add(struct sas_phy
*phy
)
423 error
= device_add(&phy
->dev
);
425 transport_add_device(&phy
->dev
);
426 transport_configure_device(&phy
->dev
);
431 EXPORT_SYMBOL(sas_phy_add
);
434 * sas_phy_free -- free a SAS PHY
435 * @phy: SAS PHY to free
437 * Frees the specified SAS PHY.
440 * This function must only be called on a PHY that has not
441 * sucessfully been added using sas_phy_add().
443 void sas_phy_free(struct sas_phy
*phy
)
445 transport_destroy_device(&phy
->dev
);
446 put_device(phy
->dev
.parent
);
447 put_device(phy
->dev
.parent
);
448 put_device(phy
->dev
.parent
);
451 EXPORT_SYMBOL(sas_phy_free
);
454 * sas_phy_delete -- remove SAS PHY
455 * @phy: SAS PHY to remove
457 * Removes the specified SAS PHY. If the SAS PHY has an
458 * associated remote PHY it is removed before.
461 sas_phy_delete(struct sas_phy
*phy
)
463 struct device
*dev
= &phy
->dev
;
466 sas_rphy_delete(phy
->rphy
);
468 transport_remove_device(dev
);
470 transport_destroy_device(dev
);
471 put_device(dev
->parent
);
473 EXPORT_SYMBOL(sas_phy_delete
);
476 * scsi_is_sas_phy -- check if a struct device represents a SAS PHY
477 * @dev: device to check
480 * %1 if the device represents a SAS PHY, %0 else
482 int scsi_is_sas_phy(const struct device
*dev
)
484 return dev
->release
== sas_phy_release
;
486 EXPORT_SYMBOL(scsi_is_sas_phy
);
489 * SAS remote PHY attributes.
492 #define sas_rphy_show_simple(field, name, format_string, cast) \
494 show_sas_rphy_##name(struct class_device *cdev, char *buf) \
496 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
498 return snprintf(buf, 20, format_string, cast rphy->field); \
501 #define sas_rphy_simple_attr(field, name, format_string, type) \
502 sas_rphy_show_simple(field, name, format_string, (type)) \
503 static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
504 show_sas_rphy_##name, NULL)
506 #define sas_rphy_show_protocol(field, name) \
508 show_sas_rphy_##name(struct class_device *cdev, char *buf) \
510 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
513 return snprintf(buf, 20, "none\n"); \
514 return get_sas_protocol_names(rphy->field, buf); \
517 #define sas_rphy_protocol_attr(field, name) \
518 sas_rphy_show_protocol(field, name) \
519 static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
520 show_sas_rphy_##name, NULL)
523 show_sas_rphy_device_type(struct class_device
*cdev
, char *buf
)
525 struct sas_rphy
*rphy
= transport_class_to_rphy(cdev
);
527 if (!rphy
->identify
.device_type
)
528 return snprintf(buf
, 20, "none\n");
529 return get_sas_device_type_names(
530 rphy
->identify
.device_type
, buf
);
533 static SAS_CLASS_DEVICE_ATTR(rphy
, device_type
, S_IRUGO
,
534 show_sas_rphy_device_type
, NULL
);
536 sas_rphy_protocol_attr(identify
.initiator_port_protocols
,
537 initiator_port_protocols
);
538 sas_rphy_protocol_attr(identify
.target_port_protocols
, target_port_protocols
);
539 sas_rphy_simple_attr(identify
.sas_address
, sas_address
, "0x%016llx\n",
541 sas_rphy_simple_attr(identify
.phy_identifier
, phy_identifier
, "%d\n", u8
);
543 static DECLARE_TRANSPORT_CLASS(sas_rphy_class
,
544 "sas_rphy", NULL
, NULL
, NULL
);
546 static int sas_rphy_match(struct attribute_container
*cont
, struct device
*dev
)
548 struct Scsi_Host
*shost
;
549 struct sas_internal
*i
;
551 if (!scsi_is_sas_rphy(dev
))
553 shost
= dev_to_shost(dev
->parent
->parent
);
555 if (!shost
->transportt
)
557 if (shost
->transportt
->host_attrs
.ac
.class !=
558 &sas_host_class
.class)
561 i
= to_sas_internal(shost
->transportt
);
562 return &i
->rphy_attr_cont
.ac
== cont
;
565 static void sas_rphy_release(struct device
*dev
)
567 struct sas_rphy
*rphy
= dev_to_rphy(dev
);
569 put_device(dev
->parent
);
574 * sas_rphy_alloc -- allocates and initialize a SAS remote PHY structure
575 * @parent: SAS PHY this remote PHY is conneted to
577 * Allocates an SAS remote PHY structure, connected to @parent.
580 * SAS PHY allocated or %NULL if the allocation failed.
582 struct sas_rphy
*sas_rphy_alloc(struct sas_phy
*parent
)
584 struct Scsi_Host
*shost
= dev_to_shost(&parent
->dev
);
585 struct sas_rphy
*rphy
;
587 rphy
= kmalloc(sizeof(*rphy
), GFP_KERNEL
);
589 put_device(&parent
->dev
);
592 memset(rphy
, 0, sizeof(*rphy
));
594 device_initialize(&rphy
->dev
);
595 rphy
->dev
.parent
= get_device(&parent
->dev
);
596 rphy
->dev
.release
= sas_rphy_release
;
597 sprintf(rphy
->dev
.bus_id
, "rphy-%d:%d",
598 shost
->host_no
, parent
->number
);
599 transport_setup_device(&rphy
->dev
);
603 EXPORT_SYMBOL(sas_rphy_alloc
);
606 * sas_rphy_add -- add a SAS remote PHY to the device hierachy
607 * @rphy: The remote PHY to be added
609 * Publishes a SAS remote PHY to the rest of the system.
611 int sas_rphy_add(struct sas_rphy
*rphy
)
613 struct sas_phy
*parent
= dev_to_phy(rphy
->dev
.parent
);
614 struct Scsi_Host
*shost
= dev_to_shost(parent
->dev
.parent
);
615 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
616 struct sas_identify
*identify
= &rphy
->identify
;
623 error
= device_add(&rphy
->dev
);
626 transport_add_device(&rphy
->dev
);
627 transport_configure_device(&rphy
->dev
);
629 spin_lock(&sas_host
->lock
);
630 list_add_tail(&rphy
->list
, &sas_host
->rphy_list
);
631 if (identify
->device_type
== SAS_END_DEVICE
&&
632 (identify
->target_port_protocols
&
633 (SAS_PROTOCOL_SSP
|SAS_PROTOCOL_STP
|SAS_PROTOCOL_SATA
)))
634 rphy
->scsi_target_id
= sas_host
->next_target_id
++;
636 rphy
->scsi_target_id
= -1;
637 spin_unlock(&sas_host
->lock
);
639 if (rphy
->scsi_target_id
!= -1) {
640 scsi_scan_target(&rphy
->dev
, parent
->number
,
641 rphy
->scsi_target_id
, ~0, 0);
646 EXPORT_SYMBOL(sas_rphy_add
);
649 * sas_rphy_free -- free a SAS remote PHY
650 * @rphy SAS remote PHY to free
652 * Frees the specified SAS remote PHY.
655 * This function must only be called on a remote
656 * PHY that has not sucessfully been added using
659 void sas_rphy_free(struct sas_rphy
*rphy
)
661 struct Scsi_Host
*shost
= dev_to_shost(rphy
->dev
.parent
->parent
);
662 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
664 spin_lock(&sas_host
->lock
);
665 list_del(&rphy
->list
);
666 spin_unlock(&sas_host
->lock
);
668 transport_destroy_device(&rphy
->dev
);
669 put_device(rphy
->dev
.parent
);
670 put_device(rphy
->dev
.parent
);
671 put_device(rphy
->dev
.parent
);
674 EXPORT_SYMBOL(sas_rphy_free
);
677 * sas_rphy_delete -- remove SAS remote PHY
678 * @rphy: SAS remote PHY to remove
680 * Removes the specified SAS remote PHY.
683 sas_rphy_delete(struct sas_rphy
*rphy
)
685 struct device
*dev
= &rphy
->dev
;
686 struct sas_phy
*parent
= dev_to_phy(dev
->parent
);
687 struct Scsi_Host
*shost
= dev_to_shost(parent
->dev
.parent
);
688 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
690 scsi_remove_target(dev
);
692 transport_remove_device(dev
);
694 transport_destroy_device(dev
);
696 spin_lock(&sas_host
->lock
);
697 list_del(&rphy
->list
);
698 spin_unlock(&sas_host
->lock
);
700 put_device(&parent
->dev
);
702 EXPORT_SYMBOL(sas_rphy_delete
);
705 * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY
706 * @dev: device to check
709 * %1 if the device represents a SAS remote PHY, %0 else
711 int scsi_is_sas_rphy(const struct device
*dev
)
713 return dev
->release
== sas_rphy_release
;
715 EXPORT_SYMBOL(scsi_is_sas_rphy
);
722 static struct device
*sas_target_parent(struct Scsi_Host
*shost
,
723 int channel
, uint id
)
725 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
726 struct sas_rphy
*rphy
;
727 struct device
*dev
= NULL
;
729 spin_lock(&sas_host
->lock
);
730 list_for_each_entry(rphy
, &sas_host
->rphy_list
, list
) {
731 struct sas_phy
*parent
= dev_to_phy(rphy
->dev
.parent
);
732 if (parent
->number
== channel
&&
733 rphy
->scsi_target_id
== id
)
736 spin_unlock(&sas_host
->lock
);
743 * Setup / Teardown code
746 #define SETUP_RPORT_ATTRIBUTE(field) \
747 i->private_rphy_attrs[count] = class_device_attr_##field; \
748 i->private_rphy_attrs[count].attr.mode = S_IRUGO; \
749 i->private_rphy_attrs[count].store = NULL; \
750 i->rphy_attrs[count] = &i->private_rphy_attrs[count]; \
753 #define SETUP_PORT_ATTRIBUTE(field) \
754 i->private_phy_attrs[count] = class_device_attr_##field; \
755 i->private_phy_attrs[count].attr.mode = S_IRUGO; \
756 i->private_phy_attrs[count].store = NULL; \
757 i->phy_attrs[count] = &i->private_phy_attrs[count]; \
760 #define SETUP_PORT_ATTRIBUTE_WRONLY(field) \
761 i->private_phy_attrs[count] = class_device_attr_##field; \
762 i->private_phy_attrs[count].attr.mode = S_IWUGO; \
763 i->private_phy_attrs[count].show = NULL; \
764 i->phy_attrs[count] = &i->private_phy_attrs[count]; \
769 * sas_attach_transport -- instantiate SAS transport template
770 * @ft: SAS transport class function template
772 struct scsi_transport_template
*
773 sas_attach_transport(struct sas_function_template
*ft
)
775 struct sas_internal
*i
;
778 i
= kmalloc(sizeof(struct sas_internal
), GFP_KERNEL
);
781 memset(i
, 0, sizeof(struct sas_internal
));
783 i
->t
.target_parent
= sas_target_parent
;
785 i
->t
.host_attrs
.ac
.attrs
= &i
->host_attrs
[0];
786 i
->t
.host_attrs
.ac
.class = &sas_host_class
.class;
787 i
->t
.host_attrs
.ac
.match
= sas_host_match
;
788 transport_container_register(&i
->t
.host_attrs
);
789 i
->t
.host_size
= sizeof(struct sas_host_attrs
);
791 i
->phy_attr_cont
.ac
.class = &sas_phy_class
.class;
792 i
->phy_attr_cont
.ac
.attrs
= &i
->phy_attrs
[0];
793 i
->phy_attr_cont
.ac
.match
= sas_phy_match
;
794 transport_container_register(&i
->phy_attr_cont
);
796 i
->rphy_attr_cont
.ac
.class = &sas_rphy_class
.class;
797 i
->rphy_attr_cont
.ac
.attrs
= &i
->rphy_attrs
[0];
798 i
->rphy_attr_cont
.ac
.match
= sas_rphy_match
;
799 transport_container_register(&i
->rphy_attr_cont
);
804 i
->host_attrs
[count
] = NULL
;
807 SETUP_PORT_ATTRIBUTE(initiator_port_protocols
);
808 SETUP_PORT_ATTRIBUTE(target_port_protocols
);
809 SETUP_PORT_ATTRIBUTE(device_type
);
810 SETUP_PORT_ATTRIBUTE(sas_address
);
811 SETUP_PORT_ATTRIBUTE(phy_identifier
);
812 SETUP_PORT_ATTRIBUTE(port_identifier
);
813 SETUP_PORT_ATTRIBUTE(negotiated_linkrate
);
814 SETUP_PORT_ATTRIBUTE(minimum_linkrate_hw
);
815 SETUP_PORT_ATTRIBUTE(minimum_linkrate
);
816 SETUP_PORT_ATTRIBUTE(maximum_linkrate_hw
);
817 SETUP_PORT_ATTRIBUTE(maximum_linkrate
);
819 SETUP_PORT_ATTRIBUTE(invalid_dword_count
);
820 SETUP_PORT_ATTRIBUTE(running_disparity_error_count
);
821 SETUP_PORT_ATTRIBUTE(loss_of_dword_sync_count
);
822 SETUP_PORT_ATTRIBUTE(phy_reset_problem_count
);
823 SETUP_PORT_ATTRIBUTE_WRONLY(link_reset
);
824 SETUP_PORT_ATTRIBUTE_WRONLY(hard_reset
);
825 i
->phy_attrs
[count
] = NULL
;
828 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols
);
829 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols
);
830 SETUP_RPORT_ATTRIBUTE(rphy_device_type
);
831 SETUP_RPORT_ATTRIBUTE(rphy_sas_address
);
832 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier
);
833 i
->rphy_attrs
[count
] = NULL
;
837 EXPORT_SYMBOL(sas_attach_transport
);
840 * sas_release_transport -- release SAS transport template instance
841 * @t: transport template instance
843 void sas_release_transport(struct scsi_transport_template
*t
)
845 struct sas_internal
*i
= to_sas_internal(t
);
847 transport_container_unregister(&i
->t
.host_attrs
);
848 transport_container_unregister(&i
->phy_attr_cont
);
849 transport_container_unregister(&i
->rphy_attr_cont
);
853 EXPORT_SYMBOL(sas_release_transport
);
855 static __init
int sas_transport_init(void)
859 error
= transport_class_register(&sas_host_class
);
862 error
= transport_class_register(&sas_phy_class
);
864 goto out_unregister_transport
;
865 error
= transport_class_register(&sas_rphy_class
);
867 goto out_unregister_phy
;
872 transport_class_unregister(&sas_phy_class
);
873 out_unregister_transport
:
874 transport_class_unregister(&sas_host_class
);
880 static void __exit
sas_transport_exit(void)
882 transport_class_unregister(&sas_host_class
);
883 transport_class_unregister(&sas_phy_class
);
884 transport_class_unregister(&sas_rphy_class
);
887 MODULE_AUTHOR("Christoph Hellwig");
888 MODULE_DESCRIPTION("SAS Transphy Attributes");
889 MODULE_LICENSE("GPL");
891 module_init(sas_transport_init
);
892 module_exit(sas_transport_exit
);