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 management
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/jiffies.h>
29 #include <linux/err.h>
30 #include <linux/slab.h>
31 #include <linux/string.h>
32 #include <linux/blkdev.h>
33 #include <linux/bsg.h>
35 #include <scsi/scsi.h>
36 #include <scsi/scsi_device.h>
37 #include <scsi/scsi_host.h>
38 #include <scsi/scsi_transport.h>
39 #include <scsi/scsi_transport_sas.h>
41 #include "scsi_sas_internal.h"
42 struct sas_host_attrs
{
43 struct list_head rphy_list
;
45 struct request_queue
*q
;
50 #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
54 * Hack to allow attributes of the same name in different objects.
56 #define SAS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
57 struct device_attribute dev_attr_##_prefix##_##_name = \
58 __ATTR(_name,_mode,_show,_store)
62 * Pretty printing helpers
65 #define sas_bitfield_name_match(title, table) \
67 get_sas_##title##_names(u32 table_key, char *buf) \
73 for (i = 0; i < ARRAY_SIZE(table); i++) { \
74 if (table[i].value & table_key) { \
75 len += sprintf(buf + len, "%s%s", \
76 prefix, table[i].name); \
80 len += sprintf(buf + len, "\n"); \
84 #define sas_bitfield_name_set(title, table) \
86 set_sas_##title##_names(u32 *table_key, const char *buf) \
91 for (i = 0; i < ARRAY_SIZE(table); i++) { \
92 len = strlen(table[i].name); \
93 if (strncmp(buf, table[i].name, len) == 0 && \
94 (buf[len] == '\n' || buf[len] == '\0')) { \
95 *table_key = table[i].value; \
102 #define sas_bitfield_name_search(title, table) \
104 get_sas_##title##_names(u32 table_key, char *buf) \
109 for (i = 0; i < ARRAY_SIZE(table); 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" },
153 { SAS_LINK_RATE_6_0_GBPS
, "6.0 Gbit" },
155 sas_bitfield_name_search(linkspeed
, sas_linkspeed_names
)
156 sas_bitfield_name_set(linkspeed
, sas_linkspeed_names
)
158 static void sas_smp_request(struct request_queue
*q
, struct Scsi_Host
*shost
,
159 struct sas_rphy
*rphy
)
163 int (*handler
)(struct Scsi_Host
*, struct sas_rphy
*, struct request
*);
165 while (!blk_queue_plugged(q
)) {
166 req
= elv_next_request(q
);
170 blkdev_dequeue_request(req
);
172 spin_unlock_irq(q
->queue_lock
);
174 handler
= to_sas_internal(shost
->transportt
)->f
->smp_handler
;
175 ret
= handler(shost
, rphy
, req
);
178 spin_lock_irq(q
->queue_lock
);
180 req
->end_io(req
, ret
);
184 static void sas_host_smp_request(struct request_queue
*q
)
186 sas_smp_request(q
, (struct Scsi_Host
*)q
->queuedata
, NULL
);
189 static void sas_non_host_smp_request(struct request_queue
*q
)
191 struct sas_rphy
*rphy
= q
->queuedata
;
192 sas_smp_request(q
, rphy_to_shost(rphy
), rphy
);
195 static int sas_bsg_initialize(struct Scsi_Host
*shost
, struct sas_rphy
*rphy
)
197 struct request_queue
*q
;
200 char namebuf
[BUS_ID_SIZE
];
203 if (!to_sas_internal(shost
->transportt
)->f
->smp_handler
) {
204 printk("%s can't handle SMP requests\n", shost
->hostt
->name
);
209 q
= blk_init_queue(sas_non_host_smp_request
, NULL
);
213 q
= blk_init_queue(sas_host_smp_request
, NULL
);
214 dev
= &shost
->shost_gendev
;
215 snprintf(namebuf
, sizeof(namebuf
),
216 "sas_host%d", shost
->host_no
);
222 error
= bsg_register_queue(q
, dev
, name
);
224 blk_cleanup_queue(q
);
231 to_sas_host_attrs(shost
)->q
= q
;
236 q
->queuedata
= shost
;
238 set_bit(QUEUE_FLAG_BIDI
, &q
->queue_flags
);
243 static void sas_bsg_remove(struct Scsi_Host
*shost
, struct sas_rphy
*rphy
)
245 struct request_queue
*q
;
250 q
= to_sas_host_attrs(shost
)->q
;
255 bsg_unregister_queue(q
);
256 blk_cleanup_queue(q
);
260 * SAS host attributes
263 static int sas_host_setup(struct transport_container
*tc
, struct device
*dev
,
266 struct Scsi_Host
*shost
= dev_to_shost(dev
);
267 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
269 INIT_LIST_HEAD(&sas_host
->rphy_list
);
270 mutex_init(&sas_host
->lock
);
271 sas_host
->next_target_id
= 0;
272 sas_host
->next_expander_id
= 0;
273 sas_host
->next_port_id
= 0;
275 if (sas_bsg_initialize(shost
, NULL
))
276 dev_printk(KERN_ERR
, dev
, "fail to a bsg device %d\n",
282 static int sas_host_remove(struct transport_container
*tc
, struct device
*dev
,
285 struct Scsi_Host
*shost
= dev_to_shost(dev
);
287 sas_bsg_remove(shost
, NULL
);
292 static DECLARE_TRANSPORT_CLASS(sas_host_class
,
293 "sas_host", sas_host_setup
, sas_host_remove
, NULL
);
295 static int sas_host_match(struct attribute_container
*cont
,
298 struct Scsi_Host
*shost
;
299 struct sas_internal
*i
;
301 if (!scsi_is_host_device(dev
))
303 shost
= dev_to_shost(dev
);
305 if (!shost
->transportt
)
307 if (shost
->transportt
->host_attrs
.ac
.class !=
308 &sas_host_class
.class)
311 i
= to_sas_internal(shost
->transportt
);
312 return &i
->t
.host_attrs
.ac
== cont
;
315 static int do_sas_phy_delete(struct device
*dev
, void *data
)
317 int pass
= (int)(unsigned long)data
;
319 if (pass
== 0 && scsi_is_sas_port(dev
))
320 sas_port_delete(dev_to_sas_port(dev
));
321 else if (pass
== 1 && scsi_is_sas_phy(dev
))
322 sas_phy_delete(dev_to_phy(dev
));
327 * sas_remove_children - tear down a devices SAS data structures
328 * @dev: device belonging to the sas object
330 * Removes all SAS PHYs and remote PHYs for a given object
332 void sas_remove_children(struct device
*dev
)
334 device_for_each_child(dev
, (void *)0, do_sas_phy_delete
);
335 device_for_each_child(dev
, (void *)1, do_sas_phy_delete
);
337 EXPORT_SYMBOL(sas_remove_children
);
340 * sas_remove_host - tear down a Scsi_Host's SAS data structures
341 * @shost: Scsi Host that is torn down
343 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
344 * Must be called just before scsi_remove_host for SAS HBAs.
346 void sas_remove_host(struct Scsi_Host
*shost
)
348 sas_remove_children(&shost
->shost_gendev
);
350 EXPORT_SYMBOL(sas_remove_host
);
357 #define sas_phy_show_simple(field, name, format_string, cast) \
359 show_sas_phy_##name(struct device *dev, \
360 struct device_attribute *attr, char *buf) \
362 struct sas_phy *phy = transport_class_to_phy(dev); \
364 return snprintf(buf, 20, format_string, cast phy->field); \
367 #define sas_phy_simple_attr(field, name, format_string, type) \
368 sas_phy_show_simple(field, name, format_string, (type)) \
369 static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
371 #define sas_phy_show_protocol(field, name) \
373 show_sas_phy_##name(struct device *dev, \
374 struct device_attribute *attr, char *buf) \
376 struct sas_phy *phy = transport_class_to_phy(dev); \
379 return snprintf(buf, 20, "none\n"); \
380 return get_sas_protocol_names(phy->field, buf); \
383 #define sas_phy_protocol_attr(field, name) \
384 sas_phy_show_protocol(field, name) \
385 static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
387 #define sas_phy_show_linkspeed(field) \
389 show_sas_phy_##field(struct device *dev, \
390 struct device_attribute *attr, char *buf) \
392 struct sas_phy *phy = transport_class_to_phy(dev); \
394 return get_sas_linkspeed_names(phy->field, buf); \
397 /* Fudge to tell if we're minimum or maximum */
398 #define sas_phy_store_linkspeed(field) \
400 store_sas_phy_##field(struct device *dev, \
401 struct device_attribute *attr, \
402 const char *buf, size_t count) \
404 struct sas_phy *phy = transport_class_to_phy(dev); \
405 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
406 struct sas_internal *i = to_sas_internal(shost->transportt); \
408 struct sas_phy_linkrates rates = {0}; \
411 error = set_sas_linkspeed_names(&value, buf); \
414 rates.field = value; \
415 error = i->f->set_phy_speed(phy, &rates); \
417 return error ? error : count; \
420 #define sas_phy_linkspeed_rw_attr(field) \
421 sas_phy_show_linkspeed(field) \
422 sas_phy_store_linkspeed(field) \
423 static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \
424 store_sas_phy_##field)
426 #define sas_phy_linkspeed_attr(field) \
427 sas_phy_show_linkspeed(field) \
428 static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
431 #define sas_phy_show_linkerror(field) \
433 show_sas_phy_##field(struct device *dev, \
434 struct device_attribute *attr, char *buf) \
436 struct sas_phy *phy = transport_class_to_phy(dev); \
437 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
438 struct sas_internal *i = to_sas_internal(shost->transportt); \
441 error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
444 return snprintf(buf, 20, "%u\n", phy->field); \
447 #define sas_phy_linkerror_attr(field) \
448 sas_phy_show_linkerror(field) \
449 static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
453 show_sas_device_type(struct device
*dev
,
454 struct device_attribute
*attr
, char *buf
)
456 struct sas_phy
*phy
= transport_class_to_phy(dev
);
458 if (!phy
->identify
.device_type
)
459 return snprintf(buf
, 20, "none\n");
460 return get_sas_device_type_names(phy
->identify
.device_type
, buf
);
462 static DEVICE_ATTR(device_type
, S_IRUGO
, show_sas_device_type
, NULL
);
464 static ssize_t
do_sas_phy_enable(struct device
*dev
,
465 size_t count
, int enable
)
467 struct sas_phy
*phy
= transport_class_to_phy(dev
);
468 struct Scsi_Host
*shost
= dev_to_shost(phy
->dev
.parent
);
469 struct sas_internal
*i
= to_sas_internal(shost
->transportt
);
472 error
= i
->f
->phy_enable(phy
, enable
);
475 phy
->enabled
= enable
;
480 store_sas_phy_enable(struct device
*dev
, struct device_attribute
*attr
,
481 const char *buf
, size_t count
)
488 do_sas_phy_enable(dev
, count
, 0);
491 do_sas_phy_enable(dev
, count
, 1);
501 show_sas_phy_enable(struct device
*dev
, struct device_attribute
*attr
,
504 struct sas_phy
*phy
= transport_class_to_phy(dev
);
506 return snprintf(buf
, 20, "%d", phy
->enabled
);
509 static DEVICE_ATTR(enable
, S_IRUGO
| S_IWUSR
, show_sas_phy_enable
,
510 store_sas_phy_enable
);
513 do_sas_phy_reset(struct device
*dev
, size_t count
, int hard_reset
)
515 struct sas_phy
*phy
= transport_class_to_phy(dev
);
516 struct Scsi_Host
*shost
= dev_to_shost(phy
->dev
.parent
);
517 struct sas_internal
*i
= to_sas_internal(shost
->transportt
);
520 error
= i
->f
->phy_reset(phy
, hard_reset
);
527 store_sas_link_reset(struct device
*dev
, struct device_attribute
*attr
,
528 const char *buf
, size_t count
)
530 return do_sas_phy_reset(dev
, count
, 0);
532 static DEVICE_ATTR(link_reset
, S_IWUSR
, NULL
, store_sas_link_reset
);
535 store_sas_hard_reset(struct device
*dev
, struct device_attribute
*attr
,
536 const char *buf
, size_t count
)
538 return do_sas_phy_reset(dev
, count
, 1);
540 static DEVICE_ATTR(hard_reset
, S_IWUSR
, NULL
, store_sas_hard_reset
);
542 sas_phy_protocol_attr(identify
.initiator_port_protocols
,
543 initiator_port_protocols
);
544 sas_phy_protocol_attr(identify
.target_port_protocols
,
545 target_port_protocols
);
546 sas_phy_simple_attr(identify
.sas_address
, sas_address
, "0x%016llx\n",
548 sas_phy_simple_attr(identify
.phy_identifier
, phy_identifier
, "%d\n", u8
);
549 //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int);
550 sas_phy_linkspeed_attr(negotiated_linkrate
);
551 sas_phy_linkspeed_attr(minimum_linkrate_hw
);
552 sas_phy_linkspeed_rw_attr(minimum_linkrate
);
553 sas_phy_linkspeed_attr(maximum_linkrate_hw
);
554 sas_phy_linkspeed_rw_attr(maximum_linkrate
);
555 sas_phy_linkerror_attr(invalid_dword_count
);
556 sas_phy_linkerror_attr(running_disparity_error_count
);
557 sas_phy_linkerror_attr(loss_of_dword_sync_count
);
558 sas_phy_linkerror_attr(phy_reset_problem_count
);
561 static DECLARE_TRANSPORT_CLASS(sas_phy_class
,
562 "sas_phy", NULL
, NULL
, NULL
);
564 static int sas_phy_match(struct attribute_container
*cont
, struct device
*dev
)
566 struct Scsi_Host
*shost
;
567 struct sas_internal
*i
;
569 if (!scsi_is_sas_phy(dev
))
571 shost
= dev_to_shost(dev
->parent
);
573 if (!shost
->transportt
)
575 if (shost
->transportt
->host_attrs
.ac
.class !=
576 &sas_host_class
.class)
579 i
= to_sas_internal(shost
->transportt
);
580 return &i
->phy_attr_cont
.ac
== cont
;
583 static void sas_phy_release(struct device
*dev
)
585 struct sas_phy
*phy
= dev_to_phy(dev
);
587 put_device(dev
->parent
);
592 * sas_phy_alloc - allocates and initialize a SAS PHY structure
593 * @parent: Parent device
596 * Allocates an SAS PHY structure. It will be added in the device tree
597 * below the device specified by @parent, which has to be either a Scsi_Host
601 * SAS PHY allocated or %NULL if the allocation failed.
603 struct sas_phy
*sas_phy_alloc(struct device
*parent
, int number
)
605 struct Scsi_Host
*shost
= dev_to_shost(parent
);
608 phy
= kzalloc(sizeof(*phy
), GFP_KERNEL
);
612 phy
->number
= number
;
615 device_initialize(&phy
->dev
);
616 phy
->dev
.parent
= get_device(parent
);
617 phy
->dev
.release
= sas_phy_release
;
618 INIT_LIST_HEAD(&phy
->port_siblings
);
619 if (scsi_is_sas_expander_device(parent
)) {
620 struct sas_rphy
*rphy
= dev_to_rphy(parent
);
621 sprintf(phy
->dev
.bus_id
, "phy-%d:%d:%d", shost
->host_no
,
622 rphy
->scsi_target_id
, number
);
624 sprintf(phy
->dev
.bus_id
, "phy-%d:%d", shost
->host_no
, number
);
626 transport_setup_device(&phy
->dev
);
630 EXPORT_SYMBOL(sas_phy_alloc
);
633 * sas_phy_add - add a SAS PHY to the device hierarchy
634 * @phy: The PHY to be added
636 * Publishes a SAS PHY to the rest of the system.
638 int sas_phy_add(struct sas_phy
*phy
)
642 error
= device_add(&phy
->dev
);
644 transport_add_device(&phy
->dev
);
645 transport_configure_device(&phy
->dev
);
650 EXPORT_SYMBOL(sas_phy_add
);
653 * sas_phy_free - free a SAS PHY
654 * @phy: SAS PHY to free
656 * Frees the specified SAS PHY.
659 * This function must only be called on a PHY that has not
660 * sucessfully been added using sas_phy_add().
662 void sas_phy_free(struct sas_phy
*phy
)
664 transport_destroy_device(&phy
->dev
);
665 put_device(&phy
->dev
);
667 EXPORT_SYMBOL(sas_phy_free
);
670 * sas_phy_delete - remove SAS PHY
671 * @phy: SAS PHY to remove
673 * Removes the specified SAS PHY. If the SAS PHY has an
674 * associated remote PHY it is removed before.
677 sas_phy_delete(struct sas_phy
*phy
)
679 struct device
*dev
= &phy
->dev
;
681 /* this happens if the phy is still part of a port when deleted */
682 BUG_ON(!list_empty(&phy
->port_siblings
));
684 transport_remove_device(dev
);
686 transport_destroy_device(dev
);
689 EXPORT_SYMBOL(sas_phy_delete
);
692 * scsi_is_sas_phy - check if a struct device represents a SAS PHY
693 * @dev: device to check
696 * %1 if the device represents a SAS PHY, %0 else
698 int scsi_is_sas_phy(const struct device
*dev
)
700 return dev
->release
== sas_phy_release
;
702 EXPORT_SYMBOL(scsi_is_sas_phy
);
705 * SAS Port attributes
707 #define sas_port_show_simple(field, name, format_string, cast) \
709 show_sas_port_##name(struct device *dev, \
710 struct device_attribute *attr, char *buf) \
712 struct sas_port *port = transport_class_to_sas_port(dev); \
714 return snprintf(buf, 20, format_string, cast port->field); \
717 #define sas_port_simple_attr(field, name, format_string, type) \
718 sas_port_show_simple(field, name, format_string, (type)) \
719 static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
721 sas_port_simple_attr(num_phys
, num_phys
, "%d\n", int);
723 static DECLARE_TRANSPORT_CLASS(sas_port_class
,
724 "sas_port", NULL
, NULL
, NULL
);
726 static int sas_port_match(struct attribute_container
*cont
, struct device
*dev
)
728 struct Scsi_Host
*shost
;
729 struct sas_internal
*i
;
731 if (!scsi_is_sas_port(dev
))
733 shost
= dev_to_shost(dev
->parent
);
735 if (!shost
->transportt
)
737 if (shost
->transportt
->host_attrs
.ac
.class !=
738 &sas_host_class
.class)
741 i
= to_sas_internal(shost
->transportt
);
742 return &i
->port_attr_cont
.ac
== cont
;
746 static void sas_port_release(struct device
*dev
)
748 struct sas_port
*port
= dev_to_sas_port(dev
);
750 BUG_ON(!list_empty(&port
->phy_list
));
752 put_device(dev
->parent
);
756 static void sas_port_create_link(struct sas_port
*port
,
761 res
= sysfs_create_link(&port
->dev
.kobj
, &phy
->dev
.kobj
,
765 res
= sysfs_create_link(&phy
->dev
.kobj
, &port
->dev
.kobj
, "port");
770 printk(KERN_ERR
"%s: Cannot create port links, err=%d\n",
774 static void sas_port_delete_link(struct sas_port
*port
,
777 sysfs_remove_link(&port
->dev
.kobj
, phy
->dev
.bus_id
);
778 sysfs_remove_link(&phy
->dev
.kobj
, "port");
781 /** sas_port_alloc - allocate and initialize a SAS port structure
783 * @parent: parent device
784 * @port_id: port number
786 * Allocates a SAS port structure. It will be added to the device tree
787 * below the device specified by @parent which must be either a Scsi_Host
788 * or a sas_expander_device.
790 * Returns %NULL on error
792 struct sas_port
*sas_port_alloc(struct device
*parent
, int port_id
)
794 struct Scsi_Host
*shost
= dev_to_shost(parent
);
795 struct sas_port
*port
;
797 port
= kzalloc(sizeof(*port
), GFP_KERNEL
);
801 port
->port_identifier
= port_id
;
803 device_initialize(&port
->dev
);
805 port
->dev
.parent
= get_device(parent
);
806 port
->dev
.release
= sas_port_release
;
808 mutex_init(&port
->phy_list_mutex
);
809 INIT_LIST_HEAD(&port
->phy_list
);
811 if (scsi_is_sas_expander_device(parent
)) {
812 struct sas_rphy
*rphy
= dev_to_rphy(parent
);
813 sprintf(port
->dev
.bus_id
, "port-%d:%d:%d", shost
->host_no
,
814 rphy
->scsi_target_id
, port
->port_identifier
);
816 sprintf(port
->dev
.bus_id
, "port-%d:%d", shost
->host_no
,
817 port
->port_identifier
);
819 transport_setup_device(&port
->dev
);
823 EXPORT_SYMBOL(sas_port_alloc
);
825 /** sas_port_alloc_num - allocate and initialize a SAS port structure
827 * @parent: parent device
829 * Allocates a SAS port structure and a number to go with it. This
830 * interface is really for adapters where the port number has no
831 * meansing, so the sas class should manage them. It will be added to
832 * the device tree below the device specified by @parent which must be
833 * either a Scsi_Host or a sas_expander_device.
835 * Returns %NULL on error
837 struct sas_port
*sas_port_alloc_num(struct device
*parent
)
840 struct Scsi_Host
*shost
= dev_to_shost(parent
);
841 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
843 /* FIXME: use idr for this eventually */
844 mutex_lock(&sas_host
->lock
);
845 if (scsi_is_sas_expander_device(parent
)) {
846 struct sas_rphy
*rphy
= dev_to_rphy(parent
);
847 struct sas_expander_device
*exp
= rphy_to_expander_device(rphy
);
849 index
= exp
->next_port_id
++;
851 index
= sas_host
->next_port_id
++;
852 mutex_unlock(&sas_host
->lock
);
853 return sas_port_alloc(parent
, index
);
855 EXPORT_SYMBOL(sas_port_alloc_num
);
858 * sas_port_add - add a SAS port to the device hierarchy
859 * @port: port to be added
861 * publishes a port to the rest of the system
863 int sas_port_add(struct sas_port
*port
)
867 /* No phys should be added until this is made visible */
868 BUG_ON(!list_empty(&port
->phy_list
));
870 error
= device_add(&port
->dev
);
875 transport_add_device(&port
->dev
);
876 transport_configure_device(&port
->dev
);
880 EXPORT_SYMBOL(sas_port_add
);
883 * sas_port_free - free a SAS PORT
884 * @port: SAS PORT to free
886 * Frees the specified SAS PORT.
889 * This function must only be called on a PORT that has not
890 * sucessfully been added using sas_port_add().
892 void sas_port_free(struct sas_port
*port
)
894 transport_destroy_device(&port
->dev
);
895 put_device(&port
->dev
);
897 EXPORT_SYMBOL(sas_port_free
);
900 * sas_port_delete - remove SAS PORT
901 * @port: SAS PORT to remove
903 * Removes the specified SAS PORT. If the SAS PORT has an
904 * associated phys, unlink them from the port as well.
906 void sas_port_delete(struct sas_port
*port
)
908 struct device
*dev
= &port
->dev
;
909 struct sas_phy
*phy
, *tmp_phy
;
912 sas_rphy_delete(port
->rphy
);
916 mutex_lock(&port
->phy_list_mutex
);
917 list_for_each_entry_safe(phy
, tmp_phy
, &port
->phy_list
,
919 sas_port_delete_link(port
, phy
);
920 list_del_init(&phy
->port_siblings
);
922 mutex_unlock(&port
->phy_list_mutex
);
924 if (port
->is_backlink
) {
925 struct device
*parent
= port
->dev
.parent
;
927 sysfs_remove_link(&port
->dev
.kobj
, parent
->bus_id
);
928 port
->is_backlink
= 0;
931 transport_remove_device(dev
);
933 transport_destroy_device(dev
);
936 EXPORT_SYMBOL(sas_port_delete
);
939 * scsi_is_sas_port - check if a struct device represents a SAS port
940 * @dev: device to check
943 * %1 if the device represents a SAS Port, %0 else
945 int scsi_is_sas_port(const struct device
*dev
)
947 return dev
->release
== sas_port_release
;
949 EXPORT_SYMBOL(scsi_is_sas_port
);
952 * sas_port_add_phy - add another phy to a port to form a wide port
953 * @port: port to add the phy to
956 * When a port is initially created, it is empty (has no phys). All
957 * ports must have at least one phy to operated, and all wide ports
958 * must have at least two. The current code makes no difference
959 * between ports and wide ports, but the only object that can be
960 * connected to a remote device is a port, so ports must be formed on
961 * all devices with phys if they're connected to anything.
963 void sas_port_add_phy(struct sas_port
*port
, struct sas_phy
*phy
)
965 mutex_lock(&port
->phy_list_mutex
);
966 if (unlikely(!list_empty(&phy
->port_siblings
))) {
967 /* make sure we're already on this port */
970 list_for_each_entry(tmp
, &port
->phy_list
, port_siblings
)
973 /* If this trips, you added a phy that was already
974 * part of a different port */
975 if (unlikely(tmp
!= phy
)) {
976 dev_printk(KERN_ERR
, &port
->dev
, "trying to add phy %s fails: it's already part of another port\n", phy
->dev
.bus_id
);
980 sas_port_create_link(port
, phy
);
981 list_add_tail(&phy
->port_siblings
, &port
->phy_list
);
984 mutex_unlock(&port
->phy_list_mutex
);
986 EXPORT_SYMBOL(sas_port_add_phy
);
989 * sas_port_delete_phy - remove a phy from a port or wide port
990 * @port: port to remove the phy from
991 * @phy: phy to remove
993 * This operation is used for tearing down ports again. It must be
994 * done to every port or wide port before calling sas_port_delete.
996 void sas_port_delete_phy(struct sas_port
*port
, struct sas_phy
*phy
)
998 mutex_lock(&port
->phy_list_mutex
);
999 sas_port_delete_link(port
, phy
);
1000 list_del_init(&phy
->port_siblings
);
1002 mutex_unlock(&port
->phy_list_mutex
);
1004 EXPORT_SYMBOL(sas_port_delete_phy
);
1006 void sas_port_mark_backlink(struct sas_port
*port
)
1009 struct device
*parent
= port
->dev
.parent
->parent
->parent
;
1011 if (port
->is_backlink
)
1013 port
->is_backlink
= 1;
1014 res
= sysfs_create_link(&port
->dev
.kobj
, &parent
->kobj
,
1020 printk(KERN_ERR
"%s: Cannot create port backlink, err=%d\n",
1024 EXPORT_SYMBOL(sas_port_mark_backlink
);
1027 * SAS remote PHY attributes.
1030 #define sas_rphy_show_simple(field, name, format_string, cast) \
1032 show_sas_rphy_##name(struct device *dev, \
1033 struct device_attribute *attr, char *buf) \
1035 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
1037 return snprintf(buf, 20, format_string, cast rphy->field); \
1040 #define sas_rphy_simple_attr(field, name, format_string, type) \
1041 sas_rphy_show_simple(field, name, format_string, (type)) \
1042 static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
1043 show_sas_rphy_##name, NULL)
1045 #define sas_rphy_show_protocol(field, name) \
1047 show_sas_rphy_##name(struct device *dev, \
1048 struct device_attribute *attr, char *buf) \
1050 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
1053 return snprintf(buf, 20, "none\n"); \
1054 return get_sas_protocol_names(rphy->field, buf); \
1057 #define sas_rphy_protocol_attr(field, name) \
1058 sas_rphy_show_protocol(field, name) \
1059 static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
1060 show_sas_rphy_##name, NULL)
1063 show_sas_rphy_device_type(struct device
*dev
,
1064 struct device_attribute
*attr
, char *buf
)
1066 struct sas_rphy
*rphy
= transport_class_to_rphy(dev
);
1068 if (!rphy
->identify
.device_type
)
1069 return snprintf(buf
, 20, "none\n");
1070 return get_sas_device_type_names(
1071 rphy
->identify
.device_type
, buf
);
1074 static SAS_DEVICE_ATTR(rphy
, device_type
, S_IRUGO
,
1075 show_sas_rphy_device_type
, NULL
);
1078 show_sas_rphy_enclosure_identifier(struct device
*dev
,
1079 struct device_attribute
*attr
, char *buf
)
1081 struct sas_rphy
*rphy
= transport_class_to_rphy(dev
);
1082 struct sas_phy
*phy
= dev_to_phy(rphy
->dev
.parent
);
1083 struct Scsi_Host
*shost
= dev_to_shost(phy
->dev
.parent
);
1084 struct sas_internal
*i
= to_sas_internal(shost
->transportt
);
1089 * Only devices behind an expander are supported, because the
1090 * enclosure identifier is a SMP feature.
1092 if (scsi_is_sas_phy_local(phy
))
1095 error
= i
->f
->get_enclosure_identifier(rphy
, &identifier
);
1098 return sprintf(buf
, "0x%llx\n", (unsigned long long)identifier
);
1101 static SAS_DEVICE_ATTR(rphy
, enclosure_identifier
, S_IRUGO
,
1102 show_sas_rphy_enclosure_identifier
, NULL
);
1105 show_sas_rphy_bay_identifier(struct device
*dev
,
1106 struct device_attribute
*attr
, char *buf
)
1108 struct sas_rphy
*rphy
= transport_class_to_rphy(dev
);
1109 struct sas_phy
*phy
= dev_to_phy(rphy
->dev
.parent
);
1110 struct Scsi_Host
*shost
= dev_to_shost(phy
->dev
.parent
);
1111 struct sas_internal
*i
= to_sas_internal(shost
->transportt
);
1114 if (scsi_is_sas_phy_local(phy
))
1117 val
= i
->f
->get_bay_identifier(rphy
);
1120 return sprintf(buf
, "%d\n", val
);
1123 static SAS_DEVICE_ATTR(rphy
, bay_identifier
, S_IRUGO
,
1124 show_sas_rphy_bay_identifier
, NULL
);
1126 sas_rphy_protocol_attr(identify
.initiator_port_protocols
,
1127 initiator_port_protocols
);
1128 sas_rphy_protocol_attr(identify
.target_port_protocols
, target_port_protocols
);
1129 sas_rphy_simple_attr(identify
.sas_address
, sas_address
, "0x%016llx\n",
1130 unsigned long long);
1131 sas_rphy_simple_attr(identify
.phy_identifier
, phy_identifier
, "%d\n", u8
);
1133 /* only need 8 bytes of data plus header (4 or 8) */
1136 int sas_read_port_mode_page(struct scsi_device
*sdev
)
1138 char *buffer
= kzalloc(BUF_SIZE
, GFP_KERNEL
), *msdata
;
1139 struct sas_rphy
*rphy
= target_to_rphy(sdev
->sdev_target
);
1140 struct sas_end_device
*rdev
;
1141 struct scsi_mode_data mode_data
;
1144 BUG_ON(rphy
->identify
.device_type
!= SAS_END_DEVICE
);
1146 rdev
= rphy_to_end_device(rphy
);
1151 res
= scsi_mode_sense(sdev
, 1, 0x19, buffer
, BUF_SIZE
, 30*HZ
, 3,
1155 if (!scsi_status_is_good(res
))
1158 msdata
= buffer
+ mode_data
.header_length
+
1159 mode_data
.block_descriptor_length
;
1161 if (msdata
- buffer
> BUF_SIZE
- 8)
1166 rdev
->ready_led_meaning
= msdata
[2] & 0x10 ? 1 : 0;
1167 rdev
->I_T_nexus_loss_timeout
= (msdata
[4] << 8) + msdata
[5];
1168 rdev
->initiator_response_timeout
= (msdata
[6] << 8) + msdata
[7];
1174 EXPORT_SYMBOL(sas_read_port_mode_page
);
1176 static DECLARE_TRANSPORT_CLASS(sas_end_dev_class
,
1177 "sas_end_device", NULL
, NULL
, NULL
);
1179 #define sas_end_dev_show_simple(field, name, format_string, cast) \
1181 show_sas_end_dev_##name(struct device *dev, \
1182 struct device_attribute *attr, char *buf) \
1184 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
1185 struct sas_end_device *rdev = rphy_to_end_device(rphy); \
1187 return snprintf(buf, 20, format_string, cast rdev->field); \
1190 #define sas_end_dev_simple_attr(field, name, format_string, type) \
1191 sas_end_dev_show_simple(field, name, format_string, (type)) \
1192 static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
1193 show_sas_end_dev_##name, NULL)
1195 sas_end_dev_simple_attr(ready_led_meaning
, ready_led_meaning
, "%d\n", int);
1196 sas_end_dev_simple_attr(I_T_nexus_loss_timeout
, I_T_nexus_loss_timeout
,
1198 sas_end_dev_simple_attr(initiator_response_timeout
, initiator_response_timeout
,
1201 static DECLARE_TRANSPORT_CLASS(sas_expander_class
,
1202 "sas_expander", NULL
, NULL
, NULL
);
1204 #define sas_expander_show_simple(field, name, format_string, cast) \
1206 show_sas_expander_##name(struct device *dev, \
1207 struct device_attribute *attr, char *buf) \
1209 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
1210 struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
1212 return snprintf(buf, 20, format_string, cast edev->field); \
1215 #define sas_expander_simple_attr(field, name, format_string, type) \
1216 sas_expander_show_simple(field, name, format_string, (type)) \
1217 static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \
1218 show_sas_expander_##name, NULL)
1220 sas_expander_simple_attr(vendor_id
, vendor_id
, "%s\n", char *);
1221 sas_expander_simple_attr(product_id
, product_id
, "%s\n", char *);
1222 sas_expander_simple_attr(product_rev
, product_rev
, "%s\n", char *);
1223 sas_expander_simple_attr(component_vendor_id
, component_vendor_id
,
1225 sas_expander_simple_attr(component_id
, component_id
, "%u\n", unsigned int);
1226 sas_expander_simple_attr(component_revision_id
, component_revision_id
, "%u\n",
1228 sas_expander_simple_attr(level
, level
, "%d\n", int);
1230 static DECLARE_TRANSPORT_CLASS(sas_rphy_class
,
1231 "sas_device", NULL
, NULL
, NULL
);
1233 static int sas_rphy_match(struct attribute_container
*cont
, struct device
*dev
)
1235 struct Scsi_Host
*shost
;
1236 struct sas_internal
*i
;
1238 if (!scsi_is_sas_rphy(dev
))
1240 shost
= dev_to_shost(dev
->parent
->parent
);
1242 if (!shost
->transportt
)
1244 if (shost
->transportt
->host_attrs
.ac
.class !=
1245 &sas_host_class
.class)
1248 i
= to_sas_internal(shost
->transportt
);
1249 return &i
->rphy_attr_cont
.ac
== cont
;
1252 static int sas_end_dev_match(struct attribute_container
*cont
,
1255 struct Scsi_Host
*shost
;
1256 struct sas_internal
*i
;
1257 struct sas_rphy
*rphy
;
1259 if (!scsi_is_sas_rphy(dev
))
1261 shost
= dev_to_shost(dev
->parent
->parent
);
1262 rphy
= dev_to_rphy(dev
);
1264 if (!shost
->transportt
)
1266 if (shost
->transportt
->host_attrs
.ac
.class !=
1267 &sas_host_class
.class)
1270 i
= to_sas_internal(shost
->transportt
);
1271 return &i
->end_dev_attr_cont
.ac
== cont
&&
1272 rphy
->identify
.device_type
== SAS_END_DEVICE
;
1275 static int sas_expander_match(struct attribute_container
*cont
,
1278 struct Scsi_Host
*shost
;
1279 struct sas_internal
*i
;
1280 struct sas_rphy
*rphy
;
1282 if (!scsi_is_sas_rphy(dev
))
1284 shost
= dev_to_shost(dev
->parent
->parent
);
1285 rphy
= dev_to_rphy(dev
);
1287 if (!shost
->transportt
)
1289 if (shost
->transportt
->host_attrs
.ac
.class !=
1290 &sas_host_class
.class)
1293 i
= to_sas_internal(shost
->transportt
);
1294 return &i
->expander_attr_cont
.ac
== cont
&&
1295 (rphy
->identify
.device_type
== SAS_EDGE_EXPANDER_DEVICE
||
1296 rphy
->identify
.device_type
== SAS_FANOUT_EXPANDER_DEVICE
);
1299 static void sas_expander_release(struct device
*dev
)
1301 struct sas_rphy
*rphy
= dev_to_rphy(dev
);
1302 struct sas_expander_device
*edev
= rphy_to_expander_device(rphy
);
1304 put_device(dev
->parent
);
1308 static void sas_end_device_release(struct device
*dev
)
1310 struct sas_rphy
*rphy
= dev_to_rphy(dev
);
1311 struct sas_end_device
*edev
= rphy_to_end_device(rphy
);
1313 put_device(dev
->parent
);
1318 * sas_rphy_initialize - common rphy intialization
1319 * @rphy: rphy to initialise
1321 * Used by both sas_end_device_alloc() and sas_expander_alloc() to
1322 * initialise the common rphy component of each.
1324 static void sas_rphy_initialize(struct sas_rphy
*rphy
)
1326 INIT_LIST_HEAD(&rphy
->list
);
1330 * sas_end_device_alloc - allocate an rphy for an end device
1331 * @parent: which port
1333 * Allocates an SAS remote PHY structure, connected to @parent.
1336 * SAS PHY allocated or %NULL if the allocation failed.
1338 struct sas_rphy
*sas_end_device_alloc(struct sas_port
*parent
)
1340 struct Scsi_Host
*shost
= dev_to_shost(&parent
->dev
);
1341 struct sas_end_device
*rdev
;
1343 rdev
= kzalloc(sizeof(*rdev
), GFP_KERNEL
);
1348 device_initialize(&rdev
->rphy
.dev
);
1349 rdev
->rphy
.dev
.parent
= get_device(&parent
->dev
);
1350 rdev
->rphy
.dev
.release
= sas_end_device_release
;
1351 if (scsi_is_sas_expander_device(parent
->dev
.parent
)) {
1352 struct sas_rphy
*rphy
= dev_to_rphy(parent
->dev
.parent
);
1353 sprintf(rdev
->rphy
.dev
.bus_id
, "end_device-%d:%d:%d",
1354 shost
->host_no
, rphy
->scsi_target_id
, parent
->port_identifier
);
1356 sprintf(rdev
->rphy
.dev
.bus_id
, "end_device-%d:%d",
1357 shost
->host_no
, parent
->port_identifier
);
1358 rdev
->rphy
.identify
.device_type
= SAS_END_DEVICE
;
1359 sas_rphy_initialize(&rdev
->rphy
);
1360 transport_setup_device(&rdev
->rphy
.dev
);
1364 EXPORT_SYMBOL(sas_end_device_alloc
);
1367 * sas_expander_alloc - allocate an rphy for an end device
1368 * @parent: which port
1369 * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE
1371 * Allocates an SAS remote PHY structure, connected to @parent.
1374 * SAS PHY allocated or %NULL if the allocation failed.
1376 struct sas_rphy
*sas_expander_alloc(struct sas_port
*parent
,
1377 enum sas_device_type type
)
1379 struct Scsi_Host
*shost
= dev_to_shost(&parent
->dev
);
1380 struct sas_expander_device
*rdev
;
1381 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
1383 BUG_ON(type
!= SAS_EDGE_EXPANDER_DEVICE
&&
1384 type
!= SAS_FANOUT_EXPANDER_DEVICE
);
1386 rdev
= kzalloc(sizeof(*rdev
), GFP_KERNEL
);
1391 device_initialize(&rdev
->rphy
.dev
);
1392 rdev
->rphy
.dev
.parent
= get_device(&parent
->dev
);
1393 rdev
->rphy
.dev
.release
= sas_expander_release
;
1394 mutex_lock(&sas_host
->lock
);
1395 rdev
->rphy
.scsi_target_id
= sas_host
->next_expander_id
++;
1396 mutex_unlock(&sas_host
->lock
);
1397 sprintf(rdev
->rphy
.dev
.bus_id
, "expander-%d:%d",
1398 shost
->host_no
, rdev
->rphy
.scsi_target_id
);
1399 rdev
->rphy
.identify
.device_type
= type
;
1400 sas_rphy_initialize(&rdev
->rphy
);
1401 transport_setup_device(&rdev
->rphy
.dev
);
1405 EXPORT_SYMBOL(sas_expander_alloc
);
1408 * sas_rphy_add - add a SAS remote PHY to the device hierarchy
1409 * @rphy: The remote PHY to be added
1411 * Publishes a SAS remote PHY to the rest of the system.
1413 int sas_rphy_add(struct sas_rphy
*rphy
)
1415 struct sas_port
*parent
= dev_to_sas_port(rphy
->dev
.parent
);
1416 struct Scsi_Host
*shost
= dev_to_shost(parent
->dev
.parent
);
1417 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
1418 struct sas_identify
*identify
= &rphy
->identify
;
1423 parent
->rphy
= rphy
;
1425 error
= device_add(&rphy
->dev
);
1428 transport_add_device(&rphy
->dev
);
1429 transport_configure_device(&rphy
->dev
);
1430 if (sas_bsg_initialize(shost
, rphy
))
1431 printk("fail to a bsg device %s\n", rphy
->dev
.bus_id
);
1434 mutex_lock(&sas_host
->lock
);
1435 list_add_tail(&rphy
->list
, &sas_host
->rphy_list
);
1436 if (identify
->device_type
== SAS_END_DEVICE
&&
1437 (identify
->target_port_protocols
&
1438 (SAS_PROTOCOL_SSP
|SAS_PROTOCOL_STP
|SAS_PROTOCOL_SATA
)))
1439 rphy
->scsi_target_id
= sas_host
->next_target_id
++;
1440 else if (identify
->device_type
== SAS_END_DEVICE
)
1441 rphy
->scsi_target_id
= -1;
1442 mutex_unlock(&sas_host
->lock
);
1444 if (identify
->device_type
== SAS_END_DEVICE
&&
1445 rphy
->scsi_target_id
!= -1) {
1446 scsi_scan_target(&rphy
->dev
, 0,
1447 rphy
->scsi_target_id
, SCAN_WILD_CARD
, 0);
1452 EXPORT_SYMBOL(sas_rphy_add
);
1455 * sas_rphy_free - free a SAS remote PHY
1456 * @rphy: SAS remote PHY to free
1458 * Frees the specified SAS remote PHY.
1461 * This function must only be called on a remote
1462 * PHY that has not sucessfully been added using
1463 * sas_rphy_add() (or has been sas_rphy_remove()'d)
1465 void sas_rphy_free(struct sas_rphy
*rphy
)
1467 struct device
*dev
= &rphy
->dev
;
1468 struct Scsi_Host
*shost
= dev_to_shost(rphy
->dev
.parent
->parent
);
1469 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
1471 mutex_lock(&sas_host
->lock
);
1472 list_del(&rphy
->list
);
1473 mutex_unlock(&sas_host
->lock
);
1475 sas_bsg_remove(shost
, rphy
);
1477 transport_destroy_device(dev
);
1481 EXPORT_SYMBOL(sas_rphy_free
);
1484 * sas_rphy_delete - remove and free SAS remote PHY
1485 * @rphy: SAS remote PHY to remove and free
1487 * Removes the specified SAS remote PHY and frees it.
1490 sas_rphy_delete(struct sas_rphy
*rphy
)
1492 sas_rphy_remove(rphy
);
1493 sas_rphy_free(rphy
);
1495 EXPORT_SYMBOL(sas_rphy_delete
);
1498 * sas_rphy_remove - remove SAS remote PHY
1499 * @rphy: SAS remote phy to remove
1501 * Removes the specified SAS remote PHY.
1504 sas_rphy_remove(struct sas_rphy
*rphy
)
1506 struct device
*dev
= &rphy
->dev
;
1507 struct sas_port
*parent
= dev_to_sas_port(dev
->parent
);
1509 switch (rphy
->identify
.device_type
) {
1510 case SAS_END_DEVICE
:
1511 scsi_remove_target(dev
);
1513 case SAS_EDGE_EXPANDER_DEVICE
:
1514 case SAS_FANOUT_EXPANDER_DEVICE
:
1515 sas_remove_children(dev
);
1521 transport_remove_device(dev
);
1524 parent
->rphy
= NULL
;
1526 EXPORT_SYMBOL(sas_rphy_remove
);
1529 * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY
1530 * @dev: device to check
1533 * %1 if the device represents a SAS remote PHY, %0 else
1535 int scsi_is_sas_rphy(const struct device
*dev
)
1537 return dev
->release
== sas_end_device_release
||
1538 dev
->release
== sas_expander_release
;
1540 EXPORT_SYMBOL(scsi_is_sas_rphy
);
1547 static int sas_user_scan(struct Scsi_Host
*shost
, uint channel
,
1550 struct sas_host_attrs
*sas_host
= to_sas_host_attrs(shost
);
1551 struct sas_rphy
*rphy
;
1553 mutex_lock(&sas_host
->lock
);
1554 list_for_each_entry(rphy
, &sas_host
->rphy_list
, list
) {
1555 if (rphy
->identify
.device_type
!= SAS_END_DEVICE
||
1556 rphy
->scsi_target_id
== -1)
1559 if ((channel
== SCAN_WILD_CARD
|| channel
== 0) &&
1560 (id
== SCAN_WILD_CARD
|| id
== rphy
->scsi_target_id
)) {
1561 scsi_scan_target(&rphy
->dev
, 0,
1562 rphy
->scsi_target_id
, lun
, 1);
1565 mutex_unlock(&sas_host
->lock
);
1572 * Setup / Teardown code
1575 #define SETUP_TEMPLATE(attrb, field, perm, test) \
1576 i->private_##attrb[count] = dev_attr_##field; \
1577 i->private_##attrb[count].attr.mode = perm; \
1578 i->attrb[count] = &i->private_##attrb[count]; \
1582 #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \
1583 i->private_##attrb[count] = dev_attr_##field; \
1584 i->private_##attrb[count].attr.mode = perm; \
1586 i->private_##attrb[count].attr.mode = ro_perm; \
1587 i->private_##attrb[count].store = NULL; \
1589 i->attrb[count] = &i->private_##attrb[count]; \
1593 #define SETUP_RPORT_ATTRIBUTE(field) \
1594 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
1596 #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
1597 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
1599 #define SETUP_PHY_ATTRIBUTE(field) \
1600 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
1602 #define SETUP_PHY_ATTRIBUTE_RW(field) \
1603 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1604 !i->f->set_phy_speed, S_IRUGO)
1606 #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \
1607 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1608 !i->f->func, S_IRUGO)
1610 #define SETUP_PORT_ATTRIBUTE(field) \
1611 SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
1613 #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \
1614 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
1616 #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \
1617 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1)
1619 #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \
1620 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func)
1622 #define SETUP_END_DEV_ATTRIBUTE(field) \
1623 SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
1625 #define SETUP_EXPANDER_ATTRIBUTE(field) \
1626 SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
1629 * sas_attach_transport - instantiate SAS transport template
1630 * @ft: SAS transport class function template
1632 struct scsi_transport_template
*
1633 sas_attach_transport(struct sas_function_template
*ft
)
1635 struct sas_internal
*i
;
1638 i
= kzalloc(sizeof(struct sas_internal
), GFP_KERNEL
);
1642 i
->t
.user_scan
= sas_user_scan
;
1644 i
->t
.host_attrs
.ac
.attrs
= &i
->host_attrs
[0];
1645 i
->t
.host_attrs
.ac
.class = &sas_host_class
.class;
1646 i
->t
.host_attrs
.ac
.match
= sas_host_match
;
1647 transport_container_register(&i
->t
.host_attrs
);
1648 i
->t
.host_size
= sizeof(struct sas_host_attrs
);
1650 i
->phy_attr_cont
.ac
.class = &sas_phy_class
.class;
1651 i
->phy_attr_cont
.ac
.attrs
= &i
->phy_attrs
[0];
1652 i
->phy_attr_cont
.ac
.match
= sas_phy_match
;
1653 transport_container_register(&i
->phy_attr_cont
);
1655 i
->port_attr_cont
.ac
.class = &sas_port_class
.class;
1656 i
->port_attr_cont
.ac
.attrs
= &i
->port_attrs
[0];
1657 i
->port_attr_cont
.ac
.match
= sas_port_match
;
1658 transport_container_register(&i
->port_attr_cont
);
1660 i
->rphy_attr_cont
.ac
.class = &sas_rphy_class
.class;
1661 i
->rphy_attr_cont
.ac
.attrs
= &i
->rphy_attrs
[0];
1662 i
->rphy_attr_cont
.ac
.match
= sas_rphy_match
;
1663 transport_container_register(&i
->rphy_attr_cont
);
1665 i
->end_dev_attr_cont
.ac
.class = &sas_end_dev_class
.class;
1666 i
->end_dev_attr_cont
.ac
.attrs
= &i
->end_dev_attrs
[0];
1667 i
->end_dev_attr_cont
.ac
.match
= sas_end_dev_match
;
1668 transport_container_register(&i
->end_dev_attr_cont
);
1670 i
->expander_attr_cont
.ac
.class = &sas_expander_class
.class;
1671 i
->expander_attr_cont
.ac
.attrs
= &i
->expander_attrs
[0];
1672 i
->expander_attr_cont
.ac
.match
= sas_expander_match
;
1673 transport_container_register(&i
->expander_attr_cont
);
1678 SETUP_PORT_ATTRIBUTE(num_phys
);
1679 i
->host_attrs
[count
] = NULL
;
1682 SETUP_PHY_ATTRIBUTE(initiator_port_protocols
);
1683 SETUP_PHY_ATTRIBUTE(target_port_protocols
);
1684 SETUP_PHY_ATTRIBUTE(device_type
);
1685 SETUP_PHY_ATTRIBUTE(sas_address
);
1686 SETUP_PHY_ATTRIBUTE(phy_identifier
);
1687 //SETUP_PHY_ATTRIBUTE(port_identifier);
1688 SETUP_PHY_ATTRIBUTE(negotiated_linkrate
);
1689 SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw
);
1690 SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate
);
1691 SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw
);
1692 SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate
);
1694 SETUP_PHY_ATTRIBUTE(invalid_dword_count
);
1695 SETUP_PHY_ATTRIBUTE(running_disparity_error_count
);
1696 SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count
);
1697 SETUP_PHY_ATTRIBUTE(phy_reset_problem_count
);
1698 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset
, phy_reset
);
1699 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset
, phy_reset
);
1700 SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable
, phy_enable
);
1701 i
->phy_attrs
[count
] = NULL
;
1704 SETUP_PORT_ATTRIBUTE(num_phys
);
1705 i
->port_attrs
[count
] = NULL
;
1708 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols
);
1709 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols
);
1710 SETUP_RPORT_ATTRIBUTE(rphy_device_type
);
1711 SETUP_RPORT_ATTRIBUTE(rphy_sas_address
);
1712 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier
);
1713 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier
,
1714 get_enclosure_identifier
);
1715 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier
,
1716 get_bay_identifier
);
1717 i
->rphy_attrs
[count
] = NULL
;
1720 SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning
);
1721 SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout
);
1722 SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout
);
1723 i
->end_dev_attrs
[count
] = NULL
;
1726 SETUP_EXPANDER_ATTRIBUTE(vendor_id
);
1727 SETUP_EXPANDER_ATTRIBUTE(product_id
);
1728 SETUP_EXPANDER_ATTRIBUTE(product_rev
);
1729 SETUP_EXPANDER_ATTRIBUTE(component_vendor_id
);
1730 SETUP_EXPANDER_ATTRIBUTE(component_id
);
1731 SETUP_EXPANDER_ATTRIBUTE(component_revision_id
);
1732 SETUP_EXPANDER_ATTRIBUTE(level
);
1733 i
->expander_attrs
[count
] = NULL
;
1737 EXPORT_SYMBOL(sas_attach_transport
);
1740 * sas_release_transport - release SAS transport template instance
1741 * @t: transport template instance
1743 void sas_release_transport(struct scsi_transport_template
*t
)
1745 struct sas_internal
*i
= to_sas_internal(t
);
1747 transport_container_unregister(&i
->t
.host_attrs
);
1748 transport_container_unregister(&i
->phy_attr_cont
);
1749 transport_container_unregister(&i
->port_attr_cont
);
1750 transport_container_unregister(&i
->rphy_attr_cont
);
1751 transport_container_unregister(&i
->end_dev_attr_cont
);
1752 transport_container_unregister(&i
->expander_attr_cont
);
1756 EXPORT_SYMBOL(sas_release_transport
);
1758 static __init
int sas_transport_init(void)
1762 error
= transport_class_register(&sas_host_class
);
1765 error
= transport_class_register(&sas_phy_class
);
1767 goto out_unregister_transport
;
1768 error
= transport_class_register(&sas_port_class
);
1770 goto out_unregister_phy
;
1771 error
= transport_class_register(&sas_rphy_class
);
1773 goto out_unregister_port
;
1774 error
= transport_class_register(&sas_end_dev_class
);
1776 goto out_unregister_rphy
;
1777 error
= transport_class_register(&sas_expander_class
);
1779 goto out_unregister_end_dev
;
1783 out_unregister_end_dev
:
1784 transport_class_unregister(&sas_end_dev_class
);
1785 out_unregister_rphy
:
1786 transport_class_unregister(&sas_rphy_class
);
1787 out_unregister_port
:
1788 transport_class_unregister(&sas_port_class
);
1790 transport_class_unregister(&sas_phy_class
);
1791 out_unregister_transport
:
1792 transport_class_unregister(&sas_host_class
);
1798 static void __exit
sas_transport_exit(void)
1800 transport_class_unregister(&sas_host_class
);
1801 transport_class_unregister(&sas_phy_class
);
1802 transport_class_unregister(&sas_port_class
);
1803 transport_class_unregister(&sas_rphy_class
);
1804 transport_class_unregister(&sas_end_dev_class
);
1805 transport_class_unregister(&sas_expander_class
);
1808 MODULE_AUTHOR("Christoph Hellwig");
1809 MODULE_DESCRIPTION("SAS Transport Attributes");
1810 MODULE_LICENSE("GPL");
1812 module_init(sas_transport_init
);
1813 module_exit(sas_transport_exit
);