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>
39 #define SAS_HOST_ATTRS 0
40 #define SAS_PORT_ATTRS 17
41 #define SAS_RPORT_ATTRS 7
44 struct scsi_transport_template t
;
45 struct sas_function_template
*f
;
47 struct class_device_attribute private_host_attrs
[SAS_HOST_ATTRS
];
48 struct class_device_attribute private_phy_attrs
[SAS_PORT_ATTRS
];
49 struct class_device_attribute private_rphy_attrs
[SAS_RPORT_ATTRS
];
51 struct transport_container phy_attr_cont
;
52 struct transport_container rphy_attr_cont
;
55 * The array of null terminated pointers to attributes
56 * needed by scsi_sysfs.c
58 struct class_device_attribute
*host_attrs
[SAS_HOST_ATTRS
+ 1];
59 struct class_device_attribute
*phy_attrs
[SAS_PORT_ATTRS
+ 1];
60 struct class_device_attribute
*rphy_attrs
[SAS_RPORT_ATTRS
+ 1];
62 #define to_sas_internal(tmpl) container_of(tmpl, struct sas_internal, t)
64 struct sas_host_attrs
{
65 struct list_head rphy_list
;
69 #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
73 * Hack to allow attributes of the same name in different objects.
75 #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
76 struct class_device_attribute class_device_attr_##_prefix##_##_name = \
77 __ATTR(_name,_mode,_show,_store)
81 * Pretty printing helpers
84 #define sas_bitfield_name_match(title, table) \
86 get_sas_##title##_names(u32 table_key, char *buf) \
92 for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
93 if (table[i].value & table_key) { \
94 len += sprintf(buf + len, "%s%s", \
95 prefix, table[i].name); \
99 len += sprintf(buf + len, "\n"); \
103 #define sas_bitfield_name_search(title, table) \
105 get_sas_##title##_names(u32 table_key, char *buf) \
110 for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
111 if (table[i].value == table_key) { \
112 len += sprintf(buf + len, "%s", \
117 len += sprintf(buf + len, "\n"); \
124 } sas_device_type_names
[] = {
125 { SAS_PHY_UNUSED
, "unused" },
126 { SAS_END_DEVICE
, "end device" },
127 { SAS_EDGE_EXPANDER_DEVICE
, "edge expander" },
128 { SAS_FANOUT_EXPANDER_DEVICE
, "fanout expander" },
130 sas_bitfield_name_search(device_type
, sas_device_type_names
)
136 } sas_protocol_names
[] = {
137 { SAS_PROTOCOL_SATA
, "sata" },
138 { SAS_PROTOCOL_SMP
, "smp" },
139 { SAS_PROTOCOL_STP
, "stp" },
140 { SAS_PROTOCOL_SSP
, "ssp" },
142 sas_bitfield_name_match(protocol
, sas_protocol_names
)
147 } sas_linkspeed_names
[] = {
148 { SAS_LINK_RATE_UNKNOWN
, "Unknown" },
149 { SAS_PHY_DISABLED
, "Phy disabled" },
150 { SAS_LINK_RATE_FAILED
, "Link Rate failed" },
151 { SAS_SATA_SPINUP_HOLD
, "Spin-up hold" },
152 { SAS_LINK_RATE_1_5_GBPS
, "1.5 Gbit" },
153 { SAS_LINK_RATE_3_0_GBPS
, "3.0 Gbit" },
155 sas_bitfield_name_search(linkspeed
, sas_linkspeed_names
)
159 * SAS host attributes
162 static int sas_host_setup(struct transport_container
*tc
, struct device
*dev
,
163 struct class_device
*cdev
)
165 struct Scsi_Host
*shost
= dev_to_shost(dev
);
166 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
168 INIT_LIST_HEAD(&sas_host
->rphy_list
);
169 mutex_init(&sas_host
->lock
);
170 sas_host
->next_target_id
= 0;
174 static DECLARE_TRANSPORT_CLASS(sas_host_class
,
175 "sas_host", sas_host_setup
, NULL
, NULL
);
177 static int sas_host_match(struct attribute_container
*cont
,
180 struct Scsi_Host
*shost
;
181 struct sas_internal
*i
;
183 if (!scsi_is_host_device(dev
))
185 shost
= dev_to_shost(dev
);
187 if (!shost
->transportt
)
189 if (shost
->transportt
->host_attrs
.ac
.class !=
190 &sas_host_class
.class)
193 i
= to_sas_internal(shost
->transportt
);
194 return &i
->t
.host_attrs
.ac
== cont
;
197 static int do_sas_phy_delete(struct device
*dev
, void *data
)
199 if (scsi_is_sas_phy(dev
))
200 sas_phy_delete(dev_to_phy(dev
));
205 * sas_remove_host -- tear down a Scsi_Host's SAS data structures
206 * @shost: Scsi Host that is torn down
208 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
209 * Must be called just before scsi_remove_host for SAS HBAs.
211 void sas_remove_host(struct Scsi_Host
*shost
)
213 device_for_each_child(&shost
->shost_gendev
, NULL
, do_sas_phy_delete
);
215 EXPORT_SYMBOL(sas_remove_host
);
219 * SAS Port attributes
222 #define sas_phy_show_simple(field, name, format_string, cast) \
224 show_sas_phy_##name(struct class_device *cdev, char *buf) \
226 struct sas_phy *phy = transport_class_to_phy(cdev); \
228 return snprintf(buf, 20, format_string, cast phy->field); \
231 #define sas_phy_simple_attr(field, name, format_string, type) \
232 sas_phy_show_simple(field, name, format_string, (type)) \
233 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
235 #define sas_phy_show_protocol(field, name) \
237 show_sas_phy_##name(struct class_device *cdev, char *buf) \
239 struct sas_phy *phy = transport_class_to_phy(cdev); \
242 return snprintf(buf, 20, "none\n"); \
243 return get_sas_protocol_names(phy->field, buf); \
246 #define sas_phy_protocol_attr(field, name) \
247 sas_phy_show_protocol(field, name) \
248 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
250 #define sas_phy_show_linkspeed(field) \
252 show_sas_phy_##field(struct class_device *cdev, char *buf) \
254 struct sas_phy *phy = transport_class_to_phy(cdev); \
256 return get_sas_linkspeed_names(phy->field, buf); \
259 #define sas_phy_linkspeed_attr(field) \
260 sas_phy_show_linkspeed(field) \
261 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
263 #define sas_phy_show_linkerror(field) \
265 show_sas_phy_##field(struct class_device *cdev, char *buf) \
267 struct sas_phy *phy = transport_class_to_phy(cdev); \
268 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
269 struct sas_internal *i = to_sas_internal(shost->transportt); \
272 if (!phy->local_attached) \
275 error = i->f->get_linkerrors(phy); \
278 return snprintf(buf, 20, "%u\n", phy->field); \
281 #define sas_phy_linkerror_attr(field) \
282 sas_phy_show_linkerror(field) \
283 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
287 show_sas_device_type(struct class_device
*cdev
, char *buf
)
289 struct sas_phy
*phy
= transport_class_to_phy(cdev
);
291 if (!phy
->identify
.device_type
)
292 return snprintf(buf
, 20, "none\n");
293 return get_sas_device_type_names(phy
->identify
.device_type
, buf
);
295 static CLASS_DEVICE_ATTR(device_type
, S_IRUGO
, show_sas_device_type
, NULL
);
297 static ssize_t
do_sas_phy_reset(struct class_device
*cdev
,
298 size_t count
, int hard_reset
)
300 struct sas_phy
*phy
= transport_class_to_phy(cdev
);
301 struct Scsi_Host
*shost
= dev_to_shost(phy
->dev
.parent
);
302 struct sas_internal
*i
= to_sas_internal(shost
->transportt
);
305 if (!phy
->local_attached
)
308 error
= i
->f
->phy_reset(phy
, hard_reset
);
314 static ssize_t
store_sas_link_reset(struct class_device
*cdev
,
315 const char *buf
, size_t count
)
317 return do_sas_phy_reset(cdev
, count
, 0);
319 static CLASS_DEVICE_ATTR(link_reset
, S_IWUSR
, NULL
, store_sas_link_reset
);
321 static ssize_t
store_sas_hard_reset(struct class_device
*cdev
,
322 const char *buf
, size_t count
)
324 return do_sas_phy_reset(cdev
, count
, 1);
326 static CLASS_DEVICE_ATTR(hard_reset
, S_IWUSR
, NULL
, store_sas_hard_reset
);
328 sas_phy_protocol_attr(identify
.initiator_port_protocols
,
329 initiator_port_protocols
);
330 sas_phy_protocol_attr(identify
.target_port_protocols
,
331 target_port_protocols
);
332 sas_phy_simple_attr(identify
.sas_address
, sas_address
, "0x%016llx\n",
334 sas_phy_simple_attr(identify
.phy_identifier
, phy_identifier
, "%d\n", u8
);
335 sas_phy_simple_attr(port_identifier
, port_identifier
, "%d\n", u8
);
336 sas_phy_linkspeed_attr(negotiated_linkrate
);
337 sas_phy_linkspeed_attr(minimum_linkrate_hw
);
338 sas_phy_linkspeed_attr(minimum_linkrate
);
339 sas_phy_linkspeed_attr(maximum_linkrate_hw
);
340 sas_phy_linkspeed_attr(maximum_linkrate
);
341 sas_phy_linkerror_attr(invalid_dword_count
);
342 sas_phy_linkerror_attr(running_disparity_error_count
);
343 sas_phy_linkerror_attr(loss_of_dword_sync_count
);
344 sas_phy_linkerror_attr(phy_reset_problem_count
);
347 static DECLARE_TRANSPORT_CLASS(sas_phy_class
,
348 "sas_phy", NULL
, NULL
, NULL
);
350 static int sas_phy_match(struct attribute_container
*cont
, struct device
*dev
)
352 struct Scsi_Host
*shost
;
353 struct sas_internal
*i
;
355 if (!scsi_is_sas_phy(dev
))
357 shost
= dev_to_shost(dev
->parent
);
359 if (!shost
->transportt
)
361 if (shost
->transportt
->host_attrs
.ac
.class !=
362 &sas_host_class
.class)
365 i
= to_sas_internal(shost
->transportt
);
366 return &i
->phy_attr_cont
.ac
== cont
;
369 static void sas_phy_release(struct device
*dev
)
371 struct sas_phy
*phy
= dev_to_phy(dev
);
373 put_device(dev
->parent
);
378 * sas_phy_alloc -- allocates and initialize a SAS PHY structure
379 * @parent: Parent device
382 * Allocates an SAS PHY structure. It will be added in the device tree
383 * below the device specified by @parent, which has to be either a Scsi_Host
387 * SAS PHY allocated or %NULL if the allocation failed.
389 struct sas_phy
*sas_phy_alloc(struct device
*parent
, int number
)
391 struct Scsi_Host
*shost
= dev_to_shost(parent
);
394 phy
= kzalloc(sizeof(*phy
), GFP_KERNEL
);
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
);
537 show_sas_rphy_enclosure_identifier(struct class_device
*cdev
, char *buf
)
539 struct sas_rphy
*rphy
= transport_class_to_rphy(cdev
);
540 struct sas_phy
*phy
= dev_to_phy(rphy
->dev
.parent
);
541 struct Scsi_Host
*shost
= dev_to_shost(phy
->dev
.parent
);
542 struct sas_internal
*i
= to_sas_internal(shost
->transportt
);
547 * Only devices behind an expander are supported, because the
548 * enclosure identifier is a SMP feature.
550 if (phy
->local_attached
)
553 error
= i
->f
->get_enclosure_identifier(rphy
, &identifier
);
556 return sprintf(buf
, "0x%llx\n", (unsigned long long)identifier
);
559 static SAS_CLASS_DEVICE_ATTR(rphy
, enclosure_identifier
, S_IRUGO
,
560 show_sas_rphy_enclosure_identifier
, NULL
);
563 show_sas_rphy_bay_identifier(struct class_device
*cdev
, char *buf
)
565 struct sas_rphy
*rphy
= transport_class_to_rphy(cdev
);
566 struct sas_phy
*phy
= dev_to_phy(rphy
->dev
.parent
);
567 struct Scsi_Host
*shost
= dev_to_shost(phy
->dev
.parent
);
568 struct sas_internal
*i
= to_sas_internal(shost
->transportt
);
571 if (phy
->local_attached
)
574 val
= i
->f
->get_bay_identifier(rphy
);
577 return sprintf(buf
, "%d\n", val
);
580 static SAS_CLASS_DEVICE_ATTR(rphy
, bay_identifier
, S_IRUGO
,
581 show_sas_rphy_bay_identifier
, NULL
);
583 sas_rphy_protocol_attr(identify
.initiator_port_protocols
,
584 initiator_port_protocols
);
585 sas_rphy_protocol_attr(identify
.target_port_protocols
, target_port_protocols
);
586 sas_rphy_simple_attr(identify
.sas_address
, sas_address
, "0x%016llx\n",
588 sas_rphy_simple_attr(identify
.phy_identifier
, phy_identifier
, "%d\n", u8
);
590 static DECLARE_TRANSPORT_CLASS(sas_rphy_class
,
591 "sas_rphy", NULL
, NULL
, NULL
);
593 static int sas_rphy_match(struct attribute_container
*cont
, struct device
*dev
)
595 struct Scsi_Host
*shost
;
596 struct sas_internal
*i
;
598 if (!scsi_is_sas_rphy(dev
))
600 shost
= dev_to_shost(dev
->parent
->parent
);
602 if (!shost
->transportt
)
604 if (shost
->transportt
->host_attrs
.ac
.class !=
605 &sas_host_class
.class)
608 i
= to_sas_internal(shost
->transportt
);
609 return &i
->rphy_attr_cont
.ac
== cont
;
612 static void sas_rphy_release(struct device
*dev
)
614 struct sas_rphy
*rphy
= dev_to_rphy(dev
);
616 put_device(dev
->parent
);
621 * sas_rphy_alloc -- allocates and initialize a SAS remote PHY structure
622 * @parent: SAS PHY this remote PHY is conneted to
624 * Allocates an SAS remote PHY structure, connected to @parent.
627 * SAS PHY allocated or %NULL if the allocation failed.
629 struct sas_rphy
*sas_rphy_alloc(struct sas_phy
*parent
)
631 struct Scsi_Host
*shost
= dev_to_shost(&parent
->dev
);
632 struct sas_rphy
*rphy
;
634 rphy
= kzalloc(sizeof(*rphy
), GFP_KERNEL
);
636 put_device(&parent
->dev
);
640 device_initialize(&rphy
->dev
);
641 rphy
->dev
.parent
= get_device(&parent
->dev
);
642 rphy
->dev
.release
= sas_rphy_release
;
643 sprintf(rphy
->dev
.bus_id
, "rphy-%d:%d-%d",
644 shost
->host_no
, parent
->port_identifier
, parent
->number
);
645 transport_setup_device(&rphy
->dev
);
649 EXPORT_SYMBOL(sas_rphy_alloc
);
652 * sas_rphy_add -- add a SAS remote PHY to the device hierachy
653 * @rphy: The remote PHY to be added
655 * Publishes a SAS remote PHY to the rest of the system.
657 int sas_rphy_add(struct sas_rphy
*rphy
)
659 struct sas_phy
*parent
= dev_to_phy(rphy
->dev
.parent
);
660 struct Scsi_Host
*shost
= dev_to_shost(parent
->dev
.parent
);
661 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
662 struct sas_identify
*identify
= &rphy
->identify
;
669 error
= device_add(&rphy
->dev
);
672 transport_add_device(&rphy
->dev
);
673 transport_configure_device(&rphy
->dev
);
675 mutex_lock(&sas_host
->lock
);
676 list_add_tail(&rphy
->list
, &sas_host
->rphy_list
);
677 if (identify
->device_type
== SAS_END_DEVICE
&&
678 (identify
->target_port_protocols
&
679 (SAS_PROTOCOL_SSP
|SAS_PROTOCOL_STP
|SAS_PROTOCOL_SATA
)))
680 rphy
->scsi_target_id
= sas_host
->next_target_id
++;
682 rphy
->scsi_target_id
= -1;
683 mutex_unlock(&sas_host
->lock
);
685 if (rphy
->scsi_target_id
!= -1) {
686 scsi_scan_target(&rphy
->dev
, parent
->port_identifier
,
687 rphy
->scsi_target_id
, ~0, 0);
692 EXPORT_SYMBOL(sas_rphy_add
);
695 * sas_rphy_free -- free a SAS remote PHY
696 * @rphy SAS remote PHY to free
698 * Frees the specified SAS remote PHY.
701 * This function must only be called on a remote
702 * PHY that has not sucessfully been added using
705 void sas_rphy_free(struct sas_rphy
*rphy
)
707 struct Scsi_Host
*shost
= dev_to_shost(rphy
->dev
.parent
->parent
);
708 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
710 mutex_lock(&sas_host
->lock
);
711 list_del(&rphy
->list
);
712 mutex_unlock(&sas_host
->lock
);
714 transport_destroy_device(&rphy
->dev
);
715 put_device(rphy
->dev
.parent
);
716 put_device(rphy
->dev
.parent
);
717 put_device(rphy
->dev
.parent
);
720 EXPORT_SYMBOL(sas_rphy_free
);
723 * sas_rphy_delete -- remove SAS remote PHY
724 * @rphy: SAS remote PHY to remove
726 * Removes the specified SAS remote PHY.
729 sas_rphy_delete(struct sas_rphy
*rphy
)
731 struct device
*dev
= &rphy
->dev
;
732 struct sas_phy
*parent
= dev_to_phy(dev
->parent
);
733 struct Scsi_Host
*shost
= dev_to_shost(parent
->dev
.parent
);
734 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
736 switch (rphy
->identify
.device_type
) {
738 scsi_remove_target(dev
);
740 case SAS_EDGE_EXPANDER_DEVICE
:
741 case SAS_FANOUT_EXPANDER_DEVICE
:
742 device_for_each_child(dev
, NULL
, do_sas_phy_delete
);
748 transport_remove_device(dev
);
750 transport_destroy_device(dev
);
752 mutex_lock(&sas_host
->lock
);
753 list_del(&rphy
->list
);
754 mutex_unlock(&sas_host
->lock
);
758 put_device(&parent
->dev
);
760 EXPORT_SYMBOL(sas_rphy_delete
);
763 * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY
764 * @dev: device to check
767 * %1 if the device represents a SAS remote PHY, %0 else
769 int scsi_is_sas_rphy(const struct device
*dev
)
771 return dev
->release
== sas_rphy_release
;
773 EXPORT_SYMBOL(scsi_is_sas_rphy
);
780 static int sas_user_scan(struct Scsi_Host
*shost
, uint channel
,
783 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
784 struct sas_rphy
*rphy
;
786 mutex_lock(&sas_host
->lock
);
787 list_for_each_entry(rphy
, &sas_host
->rphy_list
, list
) {
788 struct sas_phy
*parent
= dev_to_phy(rphy
->dev
.parent
);
790 if (rphy
->scsi_target_id
== -1)
793 if ((channel
== SCAN_WILD_CARD
|| channel
== parent
->port_identifier
) &&
794 (id
== SCAN_WILD_CARD
|| id
== rphy
->scsi_target_id
)) {
795 scsi_scan_target(&rphy
->dev
, parent
->port_identifier
,
796 rphy
->scsi_target_id
, lun
, 1);
799 mutex_unlock(&sas_host
->lock
);
806 * Setup / Teardown code
809 #define SETUP_RPORT_ATTRIBUTE(field) \
810 i->private_rphy_attrs[count] = class_device_attr_##field; \
811 i->private_rphy_attrs[count].attr.mode = S_IRUGO; \
812 i->private_rphy_attrs[count].store = NULL; \
813 i->rphy_attrs[count] = &i->private_rphy_attrs[count]; \
816 #define SETUP_PORT_ATTRIBUTE(field) \
817 i->private_phy_attrs[count] = class_device_attr_##field; \
818 i->private_phy_attrs[count].attr.mode = S_IRUGO; \
819 i->private_phy_attrs[count].store = NULL; \
820 i->phy_attrs[count] = &i->private_phy_attrs[count]; \
823 #define SETUP_PORT_ATTRIBUTE_WRONLY(field) \
824 i->private_phy_attrs[count] = class_device_attr_##field; \
825 i->private_phy_attrs[count].attr.mode = S_IWUGO; \
826 i->private_phy_attrs[count].show = NULL; \
827 i->phy_attrs[count] = &i->private_phy_attrs[count]; \
832 * sas_attach_transport -- instantiate SAS transport template
833 * @ft: SAS transport class function template
835 struct scsi_transport_template
*
836 sas_attach_transport(struct sas_function_template
*ft
)
838 struct sas_internal
*i
;
841 i
= kzalloc(sizeof(struct sas_internal
), GFP_KERNEL
);
845 i
->t
.user_scan
= sas_user_scan
;
847 i
->t
.host_attrs
.ac
.attrs
= &i
->host_attrs
[0];
848 i
->t
.host_attrs
.ac
.class = &sas_host_class
.class;
849 i
->t
.host_attrs
.ac
.match
= sas_host_match
;
850 transport_container_register(&i
->t
.host_attrs
);
851 i
->t
.host_size
= sizeof(struct sas_host_attrs
);
853 i
->phy_attr_cont
.ac
.class = &sas_phy_class
.class;
854 i
->phy_attr_cont
.ac
.attrs
= &i
->phy_attrs
[0];
855 i
->phy_attr_cont
.ac
.match
= sas_phy_match
;
856 transport_container_register(&i
->phy_attr_cont
);
858 i
->rphy_attr_cont
.ac
.class = &sas_rphy_class
.class;
859 i
->rphy_attr_cont
.ac
.attrs
= &i
->rphy_attrs
[0];
860 i
->rphy_attr_cont
.ac
.match
= sas_rphy_match
;
861 transport_container_register(&i
->rphy_attr_cont
);
866 i
->host_attrs
[count
] = NULL
;
869 SETUP_PORT_ATTRIBUTE(initiator_port_protocols
);
870 SETUP_PORT_ATTRIBUTE(target_port_protocols
);
871 SETUP_PORT_ATTRIBUTE(device_type
);
872 SETUP_PORT_ATTRIBUTE(sas_address
);
873 SETUP_PORT_ATTRIBUTE(phy_identifier
);
874 SETUP_PORT_ATTRIBUTE(port_identifier
);
875 SETUP_PORT_ATTRIBUTE(negotiated_linkrate
);
876 SETUP_PORT_ATTRIBUTE(minimum_linkrate_hw
);
877 SETUP_PORT_ATTRIBUTE(minimum_linkrate
);
878 SETUP_PORT_ATTRIBUTE(maximum_linkrate_hw
);
879 SETUP_PORT_ATTRIBUTE(maximum_linkrate
);
881 SETUP_PORT_ATTRIBUTE(invalid_dword_count
);
882 SETUP_PORT_ATTRIBUTE(running_disparity_error_count
);
883 SETUP_PORT_ATTRIBUTE(loss_of_dword_sync_count
);
884 SETUP_PORT_ATTRIBUTE(phy_reset_problem_count
);
885 SETUP_PORT_ATTRIBUTE_WRONLY(link_reset
);
886 SETUP_PORT_ATTRIBUTE_WRONLY(hard_reset
);
887 i
->phy_attrs
[count
] = NULL
;
890 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols
);
891 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols
);
892 SETUP_RPORT_ATTRIBUTE(rphy_device_type
);
893 SETUP_RPORT_ATTRIBUTE(rphy_sas_address
);
894 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier
);
895 SETUP_RPORT_ATTRIBUTE(rphy_enclosure_identifier
);
896 SETUP_RPORT_ATTRIBUTE(rphy_bay_identifier
);
897 i
->rphy_attrs
[count
] = NULL
;
901 EXPORT_SYMBOL(sas_attach_transport
);
904 * sas_release_transport -- release SAS transport template instance
905 * @t: transport template instance
907 void sas_release_transport(struct scsi_transport_template
*t
)
909 struct sas_internal
*i
= to_sas_internal(t
);
911 transport_container_unregister(&i
->t
.host_attrs
);
912 transport_container_unregister(&i
->phy_attr_cont
);
913 transport_container_unregister(&i
->rphy_attr_cont
);
917 EXPORT_SYMBOL(sas_release_transport
);
919 static __init
int sas_transport_init(void)
923 error
= transport_class_register(&sas_host_class
);
926 error
= transport_class_register(&sas_phy_class
);
928 goto out_unregister_transport
;
929 error
= transport_class_register(&sas_rphy_class
);
931 goto out_unregister_phy
;
936 transport_class_unregister(&sas_phy_class
);
937 out_unregister_transport
:
938 transport_class_unregister(&sas_host_class
);
944 static void __exit
sas_transport_exit(void)
946 transport_class_unregister(&sas_host_class
);
947 transport_class_unregister(&sas_phy_class
);
948 transport_class_unregister(&sas_rphy_class
);
951 MODULE_AUTHOR("Christoph Hellwig");
952 MODULE_DESCRIPTION("SAS Transphy Attributes");
953 MODULE_LICENSE("GPL");
955 module_init(sas_transport_init
);
956 module_exit(sas_transport_exit
);