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/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_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
57 struct class_device_attribute class_device_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);
177 spin_lock_irq(q->queue_lock);
179 req->end_io(req, ret);
183 static void sas_host_smp_request(struct request_queue *q)
185 sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL);
188 static void sas_non_host_smp_request(struct request_queue *q)
190 struct sas_rphy *rphy = q->queuedata;
191 sas_smp_request(q, rphy_to_shost(rphy), rphy);
194 static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
196 struct request_queue *q;
199 char namebuf[BUS_ID_SIZE];
202 if (!to_sas_internal(shost->transportt)->f->smp_handler) {
203 printk("%s can't handle SMP requests\n", shost->hostt->name);
208 q = blk_init_queue(sas_non_host_smp_request, NULL);
212 q = blk_init_queue(sas_host_smp_request, NULL);
213 dev = &shost->shost_gendev;
214 snprintf(namebuf, sizeof(namebuf),
215 "sas_host%d", shost->host_no);
221 error = bsg_register_queue(q, dev, name);
223 blk_cleanup_queue(q);
230 to_sas_host_attrs(shost)->q = q;
235 q->queuedata = shost;
237 set_bit(QUEUE_FLAG_BIDI, &q->queue_flags);
242 static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy)
244 struct request_queue *q;
249 q = to_sas_host_attrs(shost)->q;
254 bsg_unregister_queue(q);
255 blk_cleanup_queue(q);
259 * SAS host attributes
262 static int sas_host_setup(struct transport_container *tc, struct device *dev,
263 struct class_device *cdev)
265 struct Scsi_Host *shost = dev_to_shost(dev);
266 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
268 INIT_LIST_HEAD(&sas_host->rphy_list);
269 mutex_init(&sas_host->lock);
270 sas_host->next_target_id = 0;
271 sas_host->next_expander_id = 0;
272 sas_host->next_port_id = 0;
274 if (sas_bsg_initialize(shost, NULL))
275 dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n",
281 static int sas_host_remove(struct transport_container *tc, struct device *dev,
282 struct class_device *cdev)
284 struct Scsi_Host *shost = dev_to_shost(dev);
286 sas_bsg_remove(shost, NULL);
291 static DECLARE_TRANSPORT_CLASS(sas_host_class,
292 "sas_host", sas_host_setup, sas_host_remove, NULL);
294 static int sas_host_match(struct attribute_container *cont,
297 struct Scsi_Host *shost;
298 struct sas_internal *i;
300 if (!scsi_is_host_device(dev))
302 shost = dev_to_shost(dev);
304 if (!shost->transportt)
306 if (shost->transportt->host_attrs.ac.class !=
307 &sas_host_class.class)
310 i = to_sas_internal(shost->transportt);
311 return &i->t.host_attrs.ac == cont;
314 static int do_sas_phy_delete(struct device *dev, void *data)
316 int pass = (int)(unsigned long)data;
318 if (pass == 0 && scsi_is_sas_port(dev))
319 sas_port_delete(dev_to_sas_port(dev));
320 else if (pass == 1 && scsi_is_sas_phy(dev))
321 sas_phy_delete(dev_to_phy(dev));
326 * sas_remove_children - tear down a devices SAS data structures
327 * @dev: device belonging to the sas object
329 * Removes all SAS PHYs and remote PHYs for a given object
331 void sas_remove_children(struct device *dev)
333 device_for_each_child(dev, (void *)0, do_sas_phy_delete);
334 device_for_each_child(dev, (void *)1, do_sas_phy_delete);
336 EXPORT_SYMBOL(sas_remove_children);
339 * sas_remove_host - tear down a Scsi_Host's SAS data structures
340 * @shost: Scsi Host that is torn down
342 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
343 * Must be called just before scsi_remove_host for SAS HBAs.
345 void sas_remove_host(struct Scsi_Host *shost)
347 sas_remove_children(&shost->shost_gendev);
349 EXPORT_SYMBOL(sas_remove_host);
356 #define sas_phy_show_simple(field, name, format_string, cast) \
358 show_sas_phy_##name(struct class_device *cdev, char *buf) \
360 struct sas_phy *phy = transport_class_to_phy(cdev); \
362 return snprintf(buf, 20, format_string, cast phy->field); \
365 #define sas_phy_simple_attr(field, name, format_string, type) \
366 sas_phy_show_simple(field, name, format_string, (type)) \
367 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
369 #define sas_phy_show_protocol(field, name) \
371 show_sas_phy_##name(struct class_device *cdev, char *buf) \
373 struct sas_phy *phy = transport_class_to_phy(cdev); \
376 return snprintf(buf, 20, "none\n"); \
377 return get_sas_protocol_names(phy->field, buf); \
380 #define sas_phy_protocol_attr(field, name) \
381 sas_phy_show_protocol(field, name) \
382 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
384 #define sas_phy_show_linkspeed(field) \
386 show_sas_phy_##field(struct class_device *cdev, char *buf) \
388 struct sas_phy *phy = transport_class_to_phy(cdev); \
390 return get_sas_linkspeed_names(phy->field, buf); \
393 /* Fudge to tell if we're minimum or maximum */
394 #define sas_phy_store_linkspeed(field) \
396 store_sas_phy_##field(struct class_device *cdev, const char *buf, \
399 struct sas_phy *phy = transport_class_to_phy(cdev); \
400 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
401 struct sas_internal *i = to_sas_internal(shost->transportt); \
403 struct sas_phy_linkrates rates = {0}; \
406 error = set_sas_linkspeed_names(&value, buf); \
409 rates.field = value; \
410 error = i->f->set_phy_speed(phy, &rates); \
412 return error ? error : count; \
415 #define sas_phy_linkspeed_rw_attr(field) \
416 sas_phy_show_linkspeed(field) \
417 sas_phy_store_linkspeed(field) \
418 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \
419 store_sas_phy_##field)
421 #define sas_phy_linkspeed_attr(field) \
422 sas_phy_show_linkspeed(field) \
423 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
426 #define sas_phy_show_linkerror(field) \
428 show_sas_phy_##field(struct class_device *cdev, char *buf) \
430 struct sas_phy *phy = transport_class_to_phy(cdev); \
431 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
432 struct sas_internal *i = to_sas_internal(shost->transportt); \
435 error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
438 return snprintf(buf, 20, "%u\n", phy->field); \
441 #define sas_phy_linkerror_attr(field) \
442 sas_phy_show_linkerror(field) \
443 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
447 show_sas_device_type(struct class_device *cdev, char *buf)
449 struct sas_phy *phy = transport_class_to_phy(cdev);
451 if (!phy->identify.device_type)
452 return snprintf(buf, 20, "none\n");
453 return get_sas_device_type_names(phy->identify.device_type, buf);
455 static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
457 static ssize_t do_sas_phy_enable(struct class_device *cdev,
458 size_t count, int enable)
460 struct sas_phy *phy = transport_class_to_phy(cdev);
461 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
462 struct sas_internal *i = to_sas_internal(shost->transportt);
465 error = i->f->phy_enable(phy, enable);
468 phy->enabled = enable;
472 static ssize_t store_sas_phy_enable(struct class_device *cdev,
473 const char *buf, size_t count)
480 do_sas_phy_enable(cdev, count, 0);
483 do_sas_phy_enable(cdev, count, 1);
492 static ssize_t show_sas_phy_enable(struct class_device *cdev, char *buf)
494 struct sas_phy *phy = transport_class_to_phy(cdev);
496 return snprintf(buf, 20, "%d", phy->enabled);
499 static CLASS_DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable,
500 store_sas_phy_enable);
502 static ssize_t do_sas_phy_reset(struct class_device *cdev,
503 size_t count, int hard_reset)
505 struct sas_phy *phy = transport_class_to_phy(cdev);
506 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
507 struct sas_internal *i = to_sas_internal(shost->transportt);
510 error = i->f->phy_reset(phy, hard_reset);
516 static ssize_t store_sas_link_reset(struct class_device *cdev,
517 const char *buf, size_t count)
519 return do_sas_phy_reset(cdev, count, 0);
521 static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
523 static ssize_t store_sas_hard_reset(struct class_device *cdev,
524 const char *buf, size_t count)
526 return do_sas_phy_reset(cdev, count, 1);
528 static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
530 sas_phy_protocol_attr(identify.initiator_port_protocols,
531 initiator_port_protocols);
532 sas_phy_protocol_attr(identify.target_port_protocols,
533 target_port_protocols);
534 sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
536 sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
537 //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int);
538 sas_phy_linkspeed_attr(negotiated_linkrate);
539 sas_phy_linkspeed_attr(minimum_linkrate_hw);
540 sas_phy_linkspeed_rw_attr(minimum_linkrate);
541 sas_phy_linkspeed_attr(maximum_linkrate_hw);
542 sas_phy_linkspeed_rw_attr(maximum_linkrate);
543 sas_phy_linkerror_attr(invalid_dword_count);
544 sas_phy_linkerror_attr(running_disparity_error_count);
545 sas_phy_linkerror_attr(loss_of_dword_sync_count);
546 sas_phy_linkerror_attr(phy_reset_problem_count);
549 static DECLARE_TRANSPORT_CLASS(sas_phy_class,
550 "sas_phy", NULL, NULL, NULL);
552 static int sas_phy_match(struct attribute_container *cont, struct device *dev)
554 struct Scsi_Host *shost;
555 struct sas_internal *i;
557 if (!scsi_is_sas_phy(dev))
559 shost = dev_to_shost(dev->parent);
561 if (!shost->transportt)
563 if (shost->transportt->host_attrs.ac.class !=
564 &sas_host_class.class)
567 i = to_sas_internal(shost->transportt);
568 return &i->phy_attr_cont.ac == cont;
571 static void sas_phy_release(struct device *dev)
573 struct sas_phy *phy = dev_to_phy(dev);
575 put_device(dev->parent);
580 * sas_phy_alloc - allocates and initialize a SAS PHY structure
581 * @parent: Parent device
584 * Allocates an SAS PHY structure. It will be added in the device tree
585 * below the device specified by @parent, which has to be either a Scsi_Host
589 * SAS PHY allocated or %NULL if the allocation failed.
591 struct sas_phy *sas_phy_alloc(struct device *parent, int number)
593 struct Scsi_Host *shost = dev_to_shost(parent);
596 phy = kzalloc(sizeof(*phy), GFP_KERNEL);
600 phy->number = number;
603 device_initialize(&phy->dev);
604 phy->dev.parent = get_device(parent);
605 phy->dev.release = sas_phy_release;
606 INIT_LIST_HEAD(&phy->port_siblings);
607 if (scsi_is_sas_expander_device(parent)) {
608 struct sas_rphy *rphy = dev_to_rphy(parent);
609 sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no,
610 rphy->scsi_target_id, number);
612 sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number);
614 transport_setup_device(&phy->dev);
618 EXPORT_SYMBOL(sas_phy_alloc);
621 * sas_phy_add - add a SAS PHY to the device hierarchy
622 * @phy: The PHY to be added
624 * Publishes a SAS PHY to the rest of the system.
626 int sas_phy_add(struct sas_phy *phy)
630 error = device_add(&phy->dev);
632 transport_add_device(&phy->dev);
633 transport_configure_device(&phy->dev);
638 EXPORT_SYMBOL(sas_phy_add);
641 * sas_phy_free - free a SAS PHY
642 * @phy: SAS PHY to free
644 * Frees the specified SAS PHY.
647 * This function must only be called on a PHY that has not
648 * sucessfully been added using sas_phy_add().
650 void sas_phy_free(struct sas_phy *phy)
652 transport_destroy_device(&phy->dev);
653 put_device(&phy->dev);
655 EXPORT_SYMBOL(sas_phy_free);
658 * sas_phy_delete - remove SAS PHY
659 * @phy: SAS PHY to remove
661 * Removes the specified SAS PHY. If the SAS PHY has an
662 * associated remote PHY it is removed before.
665 sas_phy_delete(struct sas_phy *phy)
667 struct device *dev = &phy->dev;
669 /* this happens if the phy is still part of a port when deleted */
670 BUG_ON(!list_empty(&phy->port_siblings));
672 transport_remove_device(dev);
674 transport_destroy_device(dev);
677 EXPORT_SYMBOL(sas_phy_delete);
680 * scsi_is_sas_phy - check if a struct device represents a SAS PHY
681 * @dev: device to check
684 * %1 if the device represents a SAS PHY, %0 else
686 int scsi_is_sas_phy(const struct device *dev)
688 return dev->release == sas_phy_release;
690 EXPORT_SYMBOL(scsi_is_sas_phy);
693 * SAS Port attributes
695 #define sas_port_show_simple(field, name, format_string, cast) \
697 show_sas_port_##name(struct class_device *cdev, char *buf) \
699 struct sas_port *port = transport_class_to_sas_port(cdev); \
701 return snprintf(buf, 20, format_string, cast port->field); \
704 #define sas_port_simple_attr(field, name, format_string, type) \
705 sas_port_show_simple(field, name, format_string, (type)) \
706 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
708 sas_port_simple_attr(num_phys, num_phys, "%d\n", int);
710 static DECLARE_TRANSPORT_CLASS(sas_port_class,
711 "sas_port", NULL, NULL, NULL);
713 static int sas_port_match(struct attribute_container *cont, struct device *dev)
715 struct Scsi_Host *shost;
716 struct sas_internal *i;
718 if (!scsi_is_sas_port(dev))
720 shost = dev_to_shost(dev->parent);
722 if (!shost->transportt)
724 if (shost->transportt->host_attrs.ac.class !=
725 &sas_host_class.class)
728 i = to_sas_internal(shost->transportt);
729 return &i->port_attr_cont.ac == cont;
733 static void sas_port_release(struct device *dev)
735 struct sas_port *port = dev_to_sas_port(dev);
737 BUG_ON(!list_empty(&port->phy_list));
739 put_device(dev->parent);
743 static void sas_port_create_link(struct sas_port *port,
748 res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj,
752 res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port");
757 printk(KERN_ERR "%s: Cannot create port links, err=%d\n",
761 static void sas_port_delete_link(struct sas_port *port,
764 sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id);
765 sysfs_remove_link(&phy->dev.kobj, "port");
768 /** sas_port_alloc - allocate and initialize a SAS port structure
770 * @parent: parent device
771 * @port_id: port number
773 * Allocates a SAS port structure. It will be added to the device tree
774 * below the device specified by @parent which must be either a Scsi_Host
775 * or a sas_expander_device.
777 * Returns %NULL on error
779 struct sas_port *sas_port_alloc(struct device *parent, int port_id)
781 struct Scsi_Host *shost = dev_to_shost(parent);
782 struct sas_port *port;
784 port = kzalloc(sizeof(*port), GFP_KERNEL);
788 port->port_identifier = port_id;
790 device_initialize(&port->dev);
792 port->dev.parent = get_device(parent);
793 port->dev.release = sas_port_release;
795 mutex_init(&port->phy_list_mutex);
796 INIT_LIST_HEAD(&port->phy_list);
798 if (scsi_is_sas_expander_device(parent)) {
799 struct sas_rphy *rphy = dev_to_rphy(parent);
800 sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no,
801 rphy->scsi_target_id, port->port_identifier);
803 sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no,
804 port->port_identifier);
806 transport_setup_device(&port->dev);
810 EXPORT_SYMBOL(sas_port_alloc);
812 /** sas_port_alloc_num - allocate and initialize a SAS port structure
814 * @parent: parent device
816 * Allocates a SAS port structure and a number to go with it. This
817 * interface is really for adapters where the port number has no
818 * meansing, so the sas class should manage them. It will be added to
819 * the device tree below the device specified by @parent which must be
820 * either a Scsi_Host or a sas_expander_device.
822 * Returns %NULL on error
824 struct sas_port *sas_port_alloc_num(struct device *parent)
827 struct Scsi_Host *shost = dev_to_shost(parent);
828 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
830 /* FIXME: use idr for this eventually */
831 mutex_lock(&sas_host->lock);
832 if (scsi_is_sas_expander_device(parent)) {
833 struct sas_rphy *rphy = dev_to_rphy(parent);
834 struct sas_expander_device *exp = rphy_to_expander_device(rphy);
836 index = exp->next_port_id++;
838 index = sas_host->next_port_id++;
839 mutex_unlock(&sas_host->lock);
840 return sas_port_alloc(parent, index);
842 EXPORT_SYMBOL(sas_port_alloc_num);
845 * sas_port_add - add a SAS port to the device hierarchy
846 * @port: port to be added
848 * publishes a port to the rest of the system
850 int sas_port_add(struct sas_port *port)
854 /* No phys should be added until this is made visible */
855 BUG_ON(!list_empty(&port->phy_list));
857 error = device_add(&port->dev);
862 transport_add_device(&port->dev);
863 transport_configure_device(&port->dev);
867 EXPORT_SYMBOL(sas_port_add);
870 * sas_port_free - free a SAS PORT
871 * @port: SAS PORT to free
873 * Frees the specified SAS PORT.
876 * This function must only be called on a PORT that has not
877 * sucessfully been added using sas_port_add().
879 void sas_port_free(struct sas_port *port)
881 transport_destroy_device(&port->dev);
882 put_device(&port->dev);
884 EXPORT_SYMBOL(sas_port_free);
887 * sas_port_delete - remove SAS PORT
888 * @port: SAS PORT to remove
890 * Removes the specified SAS PORT. If the SAS PORT has an
891 * associated phys, unlink them from the port as well.
893 void sas_port_delete(struct sas_port *port)
895 struct device *dev = &port->dev;
896 struct sas_phy *phy, *tmp_phy;
899 sas_rphy_delete(port->rphy);
903 mutex_lock(&port->phy_list_mutex);
904 list_for_each_entry_safe(phy, tmp_phy, &port->phy_list,
906 sas_port_delete_link(port, phy);
907 list_del_init(&phy->port_siblings);
909 mutex_unlock(&port->phy_list_mutex);
911 if (port->is_backlink) {
912 struct device *parent = port->dev.parent;
914 sysfs_remove_link(&port->dev.kobj, parent->bus_id);
915 port->is_backlink = 0;
918 transport_remove_device(dev);
920 transport_destroy_device(dev);
923 EXPORT_SYMBOL(sas_port_delete);
926 * scsi_is_sas_port - check if a struct device represents a SAS port
927 * @dev: device to check
930 * %1 if the device represents a SAS Port, %0 else
932 int scsi_is_sas_port(const struct device *dev)
934 return dev->release == sas_port_release;
936 EXPORT_SYMBOL(scsi_is_sas_port);
939 * sas_port_add_phy - add another phy to a port to form a wide port
940 * @port: port to add the phy to
943 * When a port is initially created, it is empty (has no phys). All
944 * ports must have at least one phy to operated, and all wide ports
945 * must have at least two. The current code makes no difference
946 * between ports and wide ports, but the only object that can be
947 * connected to a remote device is a port, so ports must be formed on
948 * all devices with phys if they're connected to anything.
950 void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy)
952 mutex_lock(&port->phy_list_mutex);
953 if (unlikely(!list_empty(&phy->port_siblings))) {
954 /* make sure we're already on this port */
957 list_for_each_entry(tmp, &port->phy_list, port_siblings)
960 /* If this trips, you added a phy that was already
961 * part of a different port */
962 if (unlikely(tmp != phy)) {
963 dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id);
967 sas_port_create_link(port, phy);
968 list_add_tail(&phy->port_siblings, &port->phy_list);
971 mutex_unlock(&port->phy_list_mutex);
973 EXPORT_SYMBOL(sas_port_add_phy);
976 * sas_port_delete_phy - remove a phy from a port or wide port
977 * @port: port to remove the phy from
978 * @phy: phy to remove
980 * This operation is used for tearing down ports again. It must be
981 * done to every port or wide port before calling sas_port_delete.
983 void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy)
985 mutex_lock(&port->phy_list_mutex);
986 sas_port_delete_link(port, phy);
987 list_del_init(&phy->port_siblings);
989 mutex_unlock(&port->phy_list_mutex);
991 EXPORT_SYMBOL(sas_port_delete_phy);
993 void sas_port_mark_backlink(struct sas_port *port)
996 struct device *parent = port->dev.parent->parent->parent;
998 if (port->is_backlink)
1000 port->is_backlink = 1;
1001 res = sysfs_create_link(&port->dev.kobj, &parent->kobj,
1007 printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n",
1011 EXPORT_SYMBOL(sas_port_mark_backlink);
1014 * SAS remote PHY attributes.
1017 #define sas_rphy_show_simple(field, name, format_string, cast) \
1019 show_sas_rphy_##name(struct class_device *cdev, char *buf) \
1021 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
1023 return snprintf(buf, 20, format_string, cast rphy->field); \
1026 #define sas_rphy_simple_attr(field, name, format_string, type) \
1027 sas_rphy_show_simple(field, name, format_string, (type)) \
1028 static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
1029 show_sas_rphy_##name, NULL)
1031 #define sas_rphy_show_protocol(field, name) \
1033 show_sas_rphy_##name(struct class_device *cdev, char *buf) \
1035 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
1038 return snprintf(buf, 20, "none\n"); \
1039 return get_sas_protocol_names(rphy->field, buf); \
1042 #define sas_rphy_protocol_attr(field, name) \
1043 sas_rphy_show_protocol(field, name) \
1044 static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
1045 show_sas_rphy_##name, NULL)
1048 show_sas_rphy_device_type(struct class_device *cdev, char *buf)
1050 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
1052 if (!rphy->identify.device_type)
1053 return snprintf(buf, 20, "none\n");
1054 return get_sas_device_type_names(
1055 rphy->identify.device_type, buf);
1058 static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
1059 show_sas_rphy_device_type, NULL);
1062 show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf)
1064 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
1065 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1066 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1067 struct sas_internal *i = to_sas_internal(shost->transportt);
1072 * Only devices behind an expander are supported, because the
1073 * enclosure identifier is a SMP feature.
1075 if (scsi_is_sas_phy_local(phy))
1078 error = i->f->get_enclosure_identifier(rphy, &identifier);
1081 return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
1084 static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
1085 show_sas_rphy_enclosure_identifier, NULL);
1088 show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf)
1090 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
1091 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1092 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1093 struct sas_internal *i = to_sas_internal(shost->transportt);
1096 if (scsi_is_sas_phy_local(phy))
1099 val = i->f->get_bay_identifier(rphy);
1102 return sprintf(buf, "%d\n", val);
1105 static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
1106 show_sas_rphy_bay_identifier, NULL);
1108 sas_rphy_protocol_attr(identify.initiator_port_protocols,
1109 initiator_port_protocols);
1110 sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
1111 sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
1112 unsigned long long);
1113 sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
1115 /* only need 8 bytes of data plus header (4 or 8) */
1118 int sas_read_port_mode_page(struct scsi_device *sdev)
1120 char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata;
1121 struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target);
1122 struct sas_end_device *rdev;
1123 struct scsi_mode_data mode_data;
1126 BUG_ON(rphy->identify.device_type != SAS_END_DEVICE);
1128 rdev = rphy_to_end_device(rphy);
1133 res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
1137 if (!scsi_status_is_good(res))
1140 msdata = buffer + mode_data.header_length +
1141 mode_data.block_descriptor_length;
1143 if (msdata - buffer > BUF_SIZE - 8)
1148 rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0;
1149 rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5];
1150 rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7];
1156 EXPORT_SYMBOL(sas_read_port_mode_page);
1158 static DECLARE_TRANSPORT_CLASS(sas_end_dev_class,
1159 "sas_end_device", NULL, NULL, NULL);
1161 #define sas_end_dev_show_simple(field, name, format_string, cast) \
1163 show_sas_end_dev_##name(struct class_device *cdev, char *buf) \
1165 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
1166 struct sas_end_device *rdev = rphy_to_end_device(rphy); \
1168 return snprintf(buf, 20, format_string, cast rdev->field); \
1171 #define sas_end_dev_simple_attr(field, name, format_string, type) \
1172 sas_end_dev_show_simple(field, name, format_string, (type)) \
1173 static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
1174 show_sas_end_dev_##name, NULL)
1176 sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int);
1177 sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout,
1179 sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout,
1182 static DECLARE_TRANSPORT_CLASS(sas_expander_class,
1183 "sas_expander", NULL, NULL, NULL);
1185 #define sas_expander_show_simple(field, name, format_string, cast) \
1187 show_sas_expander_##name(struct class_device *cdev, char *buf) \
1189 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
1190 struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
1192 return snprintf(buf, 20, format_string, cast edev->field); \
1195 #define sas_expander_simple_attr(field, name, format_string, type) \
1196 sas_expander_show_simple(field, name, format_string, (type)) \
1197 static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \
1198 show_sas_expander_##name, NULL)
1200 sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *);
1201 sas_expander_simple_attr(product_id, product_id, "%s\n", char *);
1202 sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *);
1203 sas_expander_simple_attr(component_vendor_id, component_vendor_id,
1205 sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int);
1206 sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n",
1208 sas_expander_simple_attr(level, level, "%d\n", int);
1210 static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
1211 "sas_device", NULL, NULL, NULL);
1213 static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
1215 struct Scsi_Host *shost;
1216 struct sas_internal *i;
1218 if (!scsi_is_sas_rphy(dev))
1220 shost = dev_to_shost(dev->parent->parent);
1222 if (!shost->transportt)
1224 if (shost->transportt->host_attrs.ac.class !=
1225 &sas_host_class.class)
1228 i = to_sas_internal(shost->transportt);
1229 return &i->rphy_attr_cont.ac == cont;
1232 static int sas_end_dev_match(struct attribute_container *cont,
1235 struct Scsi_Host *shost;
1236 struct sas_internal *i;
1237 struct sas_rphy *rphy;
1239 if (!scsi_is_sas_rphy(dev))
1241 shost = dev_to_shost(dev->parent->parent);
1242 rphy = dev_to_rphy(dev);
1244 if (!shost->transportt)
1246 if (shost->transportt->host_attrs.ac.class !=
1247 &sas_host_class.class)
1250 i = to_sas_internal(shost->transportt);
1251 return &i->end_dev_attr_cont.ac == cont &&
1252 rphy->identify.device_type == SAS_END_DEVICE;
1255 static int sas_expander_match(struct attribute_container *cont,
1258 struct Scsi_Host *shost;
1259 struct sas_internal *i;
1260 struct sas_rphy *rphy;
1262 if (!scsi_is_sas_rphy(dev))
1264 shost = dev_to_shost(dev->parent->parent);
1265 rphy = dev_to_rphy(dev);
1267 if (!shost->transportt)
1269 if (shost->transportt->host_attrs.ac.class !=
1270 &sas_host_class.class)
1273 i = to_sas_internal(shost->transportt);
1274 return &i->expander_attr_cont.ac == cont &&
1275 (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
1276 rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE);
1279 static void sas_expander_release(struct device *dev)
1281 struct sas_rphy *rphy = dev_to_rphy(dev);
1282 struct sas_expander_device *edev = rphy_to_expander_device(rphy);
1284 put_device(dev->parent);
1288 static void sas_end_device_release(struct device *dev)
1290 struct sas_rphy *rphy = dev_to_rphy(dev);
1291 struct sas_end_device *edev = rphy_to_end_device(rphy);
1293 put_device(dev->parent);
1298 * sas_rphy_initialize - common rphy intialization
1299 * @rphy: rphy to initialise
1301 * Used by both sas_end_device_alloc() and sas_expander_alloc() to
1302 * initialise the common rphy component of each.
1304 static void sas_rphy_initialize(struct sas_rphy *rphy)
1306 INIT_LIST_HEAD(&rphy->list);
1310 * sas_end_device_alloc - allocate an rphy for an end device
1311 * @parent: which port
1313 * Allocates an SAS remote PHY structure, connected to @parent.
1316 * SAS PHY allocated or %NULL if the allocation failed.
1318 struct sas_rphy *sas_end_device_alloc(struct sas_port *parent)
1320 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1321 struct sas_end_device *rdev;
1323 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1328 device_initialize(&rdev->rphy.dev);
1329 rdev->rphy.dev.parent = get_device(&parent->dev);
1330 rdev->rphy.dev.release = sas_end_device_release;
1331 if (scsi_is_sas_expander_device(parent->dev.parent)) {
1332 struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent);
1333 sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d",
1334 shost->host_no, rphy->scsi_target_id, parent->port_identifier);
1336 sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d",
1337 shost->host_no, parent->port_identifier);
1338 rdev->rphy.identify.device_type = SAS_END_DEVICE;
1339 sas_rphy_initialize(&rdev->rphy);
1340 transport_setup_device(&rdev->rphy.dev);
1344 EXPORT_SYMBOL(sas_end_device_alloc);
1347 * sas_expander_alloc - allocate an rphy for an end device
1348 * @parent: which port
1349 * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE
1351 * Allocates an SAS remote PHY structure, connected to @parent.
1354 * SAS PHY allocated or %NULL if the allocation failed.
1356 struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
1357 enum sas_device_type type)
1359 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1360 struct sas_expander_device *rdev;
1361 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1363 BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE &&
1364 type != SAS_FANOUT_EXPANDER_DEVICE);
1366 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1371 device_initialize(&rdev->rphy.dev);
1372 rdev->rphy.dev.parent = get_device(&parent->dev);
1373 rdev->rphy.dev.release = sas_expander_release;
1374 mutex_lock(&sas_host->lock);
1375 rdev->rphy.scsi_target_id = sas_host->next_expander_id++;
1376 mutex_unlock(&sas_host->lock);
1377 sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d",
1378 shost->host_no, rdev->rphy.scsi_target_id);
1379 rdev->rphy.identify.device_type = type;
1380 sas_rphy_initialize(&rdev->rphy);
1381 transport_setup_device(&rdev->rphy.dev);
1385 EXPORT_SYMBOL(sas_expander_alloc);
1388 * sas_rphy_add - add a SAS remote PHY to the device hierarchy
1389 * @rphy: The remote PHY to be added
1391 * Publishes a SAS remote PHY to the rest of the system.
1393 int sas_rphy_add(struct sas_rphy *rphy)
1395 struct sas_port *parent = dev_to_sas_port(rphy->dev.parent);
1396 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
1397 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1398 struct sas_identify *identify = &rphy->identify;
1403 parent->rphy = rphy;
1405 error = device_add(&rphy->dev);
1408 transport_add_device(&rphy->dev);
1409 transport_configure_device(&rphy->dev);
1410 if (sas_bsg_initialize(shost, rphy))
1411 printk("fail to a bsg device %s\n", rphy->dev.bus_id);
1414 mutex_lock(&sas_host->lock);
1415 list_add_tail(&rphy->list, &sas_host->rphy_list);
1416 if (identify->device_type == SAS_END_DEVICE &&
1417 (identify->target_port_protocols &
1418 (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
1419 rphy->scsi_target_id = sas_host->next_target_id++;
1420 else if (identify->device_type == SAS_END_DEVICE)
1421 rphy->scsi_target_id = -1;
1422 mutex_unlock(&sas_host->lock);
1424 if (identify->device_type == SAS_END_DEVICE &&
1425 rphy->scsi_target_id != -1) {
1426 scsi_scan_target(&rphy->dev, 0,
1427 rphy->scsi_target_id, SCAN_WILD_CARD, 0);
1432 EXPORT_SYMBOL(sas_rphy_add);
1435 * sas_rphy_free - free a SAS remote PHY
1436 * @rphy: SAS remote PHY to free
1438 * Frees the specified SAS remote PHY.
1441 * This function must only be called on a remote
1442 * PHY that has not sucessfully been added using
1443 * sas_rphy_add() (or has been sas_rphy_remove()'d)
1445 void sas_rphy_free(struct sas_rphy *rphy)
1447 struct device *dev = &rphy->dev;
1448 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1449 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1451 mutex_lock(&sas_host->lock);
1452 list_del(&rphy->list);
1453 mutex_unlock(&sas_host->lock);
1455 sas_bsg_remove(shost, rphy);
1457 transport_destroy_device(dev);
1461 EXPORT_SYMBOL(sas_rphy_free);
1464 * sas_rphy_delete - remove and free SAS remote PHY
1465 * @rphy: SAS remote PHY to remove and free
1467 * Removes the specified SAS remote PHY and frees it.
1470 sas_rphy_delete(struct sas_rphy *rphy)
1472 sas_rphy_remove(rphy);
1473 sas_rphy_free(rphy);
1475 EXPORT_SYMBOL(sas_rphy_delete);
1478 * sas_rphy_remove - remove SAS remote PHY
1479 * @rphy: SAS remote phy to remove
1481 * Removes the specified SAS remote PHY.
1484 sas_rphy_remove(struct sas_rphy *rphy)
1486 struct device *dev = &rphy->dev;
1487 struct sas_port *parent = dev_to_sas_port(dev->parent);
1489 switch (rphy->identify.device_type) {
1490 case SAS_END_DEVICE:
1491 scsi_remove_target(dev);
1493 case SAS_EDGE_EXPANDER_DEVICE:
1494 case SAS_FANOUT_EXPANDER_DEVICE:
1495 sas_remove_children(dev);
1501 transport_remove_device(dev);
1504 parent->rphy = NULL;
1506 EXPORT_SYMBOL(sas_rphy_remove);
1509 * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY
1510 * @dev: device to check
1513 * %1 if the device represents a SAS remote PHY, %0 else
1515 int scsi_is_sas_rphy(const struct device *dev)
1517 return dev->release == sas_end_device_release ||
1518 dev->release == sas_expander_release;
1520 EXPORT_SYMBOL(scsi_is_sas_rphy);
1527 static int sas_user_scan(struct Scsi_Host *shost, uint channel,
1530 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1531 struct sas_rphy *rphy;
1533 mutex_lock(&sas_host->lock);
1534 list_for_each_entry(rphy, &sas_host->rphy_list, list) {
1535 if (rphy->identify.device_type != SAS_END_DEVICE ||
1536 rphy->scsi_target_id == -1)
1539 if ((channel == SCAN_WILD_CARD || channel == 0) &&
1540 (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
1541 scsi_scan_target(&rphy->dev, 0,
1542 rphy->scsi_target_id, lun, 1);
1545 mutex_unlock(&sas_host->lock);
1552 * Setup / Teardown code
1555 #define SETUP_TEMPLATE(attrb, field, perm, test) \
1556 i->private_##attrb[count] = class_device_attr_##field; \
1557 i->private_##attrb[count].attr.mode = perm; \
1558 i->attrb[count] = &i->private_##attrb[count]; \
1562 #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \
1563 i->private_##attrb[count] = class_device_attr_##field; \
1564 i->private_##attrb[count].attr.mode = perm; \
1566 i->private_##attrb[count].attr.mode = ro_perm; \
1567 i->private_##attrb[count].store = NULL; \
1569 i->attrb[count] = &i->private_##attrb[count]; \
1573 #define SETUP_RPORT_ATTRIBUTE(field) \
1574 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
1576 #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
1577 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
1579 #define SETUP_PHY_ATTRIBUTE(field) \
1580 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
1582 #define SETUP_PHY_ATTRIBUTE_RW(field) \
1583 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1584 !i->f->set_phy_speed, S_IRUGO)
1586 #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \
1587 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1588 !i->f->func, S_IRUGO)
1590 #define SETUP_PORT_ATTRIBUTE(field) \
1591 SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
1593 #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \
1594 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
1596 #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \
1597 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1)
1599 #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \
1600 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func)
1602 #define SETUP_END_DEV_ATTRIBUTE(field) \
1603 SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
1605 #define SETUP_EXPANDER_ATTRIBUTE(field) \
1606 SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
1609 * sas_attach_transport - instantiate SAS transport template
1610 * @ft: SAS transport class function template
1612 struct scsi_transport_template *
1613 sas_attach_transport(struct sas_function_template *ft)
1615 struct sas_internal *i;
1618 i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL);
1622 i->t.user_scan = sas_user_scan;
1624 i->t.host_attrs.ac.attrs = &i->host_attrs[0];
1625 i->t.host_attrs.ac.class = &sas_host_class.class;
1626 i->t.host_attrs.ac.match = sas_host_match;
1627 transport_container_register(&i->t.host_attrs);
1628 i->t.host_size = sizeof(struct sas_host_attrs);
1630 i->phy_attr_cont.ac.class = &sas_phy_class.class;
1631 i->phy_attr_cont.ac.attrs = &i->phy_attrs[0];
1632 i->phy_attr_cont.ac.match = sas_phy_match;
1633 transport_container_register(&i->phy_attr_cont);
1635 i->port_attr_cont.ac.class = &sas_port_class.class;
1636 i->port_attr_cont.ac.attrs = &i->port_attrs[0];
1637 i->port_attr_cont.ac.match = sas_port_match;
1638 transport_container_register(&i->port_attr_cont);
1640 i->rphy_attr_cont.ac.class = &sas_rphy_class.class;
1641 i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0];
1642 i->rphy_attr_cont.ac.match = sas_rphy_match;
1643 transport_container_register(&i->rphy_attr_cont);
1645 i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class;
1646 i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0];
1647 i->end_dev_attr_cont.ac.match = sas_end_dev_match;
1648 transport_container_register(&i->end_dev_attr_cont);
1650 i->expander_attr_cont.ac.class = &sas_expander_class.class;
1651 i->expander_attr_cont.ac.attrs = &i->expander_attrs[0];
1652 i->expander_attr_cont.ac.match = sas_expander_match;
1653 transport_container_register(&i->expander_attr_cont);
1658 SETUP_PORT_ATTRIBUTE(num_phys);
1659 i->host_attrs[count] = NULL;
1662 SETUP_PHY_ATTRIBUTE(initiator_port_protocols);
1663 SETUP_PHY_ATTRIBUTE(target_port_protocols);
1664 SETUP_PHY_ATTRIBUTE(device_type);
1665 SETUP_PHY_ATTRIBUTE(sas_address);
1666 SETUP_PHY_ATTRIBUTE(phy_identifier);
1667 //SETUP_PHY_ATTRIBUTE(port_identifier);
1668 SETUP_PHY_ATTRIBUTE(negotiated_linkrate);
1669 SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw);
1670 SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate);
1671 SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw);
1672 SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate);
1674 SETUP_PHY_ATTRIBUTE(invalid_dword_count);
1675 SETUP_PHY_ATTRIBUTE(running_disparity_error_count);
1676 SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count);
1677 SETUP_PHY_ATTRIBUTE(phy_reset_problem_count);
1678 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset);
1679 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset);
1680 SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable);
1681 i->phy_attrs[count] = NULL;
1684 SETUP_PORT_ATTRIBUTE(num_phys);
1685 i->port_attrs[count] = NULL;
1688 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols);
1689 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols);
1690 SETUP_RPORT_ATTRIBUTE(rphy_device_type);
1691 SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
1692 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
1693 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier,
1694 get_enclosure_identifier);
1695 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier,
1696 get_bay_identifier);
1697 i->rphy_attrs[count] = NULL;
1700 SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning);
1701 SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout);
1702 SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout);
1703 i->end_dev_attrs[count] = NULL;
1706 SETUP_EXPANDER_ATTRIBUTE(vendor_id);
1707 SETUP_EXPANDER_ATTRIBUTE(product_id);
1708 SETUP_EXPANDER_ATTRIBUTE(product_rev);
1709 SETUP_EXPANDER_ATTRIBUTE(component_vendor_id);
1710 SETUP_EXPANDER_ATTRIBUTE(component_id);
1711 SETUP_EXPANDER_ATTRIBUTE(component_revision_id);
1712 SETUP_EXPANDER_ATTRIBUTE(level);
1713 i->expander_attrs[count] = NULL;
1717 EXPORT_SYMBOL(sas_attach_transport);
1720 * sas_release_transport - release SAS transport template instance
1721 * @t: transport template instance
1723 void sas_release_transport(struct scsi_transport_template *t)
1725 struct sas_internal *i = to_sas_internal(t);
1727 transport_container_unregister(&i->t.host_attrs);
1728 transport_container_unregister(&i->phy_attr_cont);
1729 transport_container_unregister(&i->port_attr_cont);
1730 transport_container_unregister(&i->rphy_attr_cont);
1731 transport_container_unregister(&i->end_dev_attr_cont);
1732 transport_container_unregister(&i->expander_attr_cont);
1736 EXPORT_SYMBOL(sas_release_transport);
1738 static __init int sas_transport_init(void)
1742 error = transport_class_register(&sas_host_class);
1745 error = transport_class_register(&sas_phy_class);
1747 goto out_unregister_transport;
1748 error = transport_class_register(&sas_port_class);
1750 goto out_unregister_phy;
1751 error = transport_class_register(&sas_rphy_class);
1753 goto out_unregister_port;
1754 error = transport_class_register(&sas_end_dev_class);
1756 goto out_unregister_rphy;
1757 error = transport_class_register(&sas_expander_class);
1759 goto out_unregister_end_dev;
1763 out_unregister_end_dev:
1764 transport_class_unregister(&sas_end_dev_class);
1765 out_unregister_rphy:
1766 transport_class_unregister(&sas_rphy_class);
1767 out_unregister_port:
1768 transport_class_unregister(&sas_port_class);
1770 transport_class_unregister(&sas_phy_class);
1771 out_unregister_transport:
1772 transport_class_unregister(&sas_host_class);
1778 static void __exit sas_transport_exit(void)
1780 transport_class_unregister(&sas_host_class);
1781 transport_class_unregister(&sas_phy_class);
1782 transport_class_unregister(&sas_port_class);
1783 transport_class_unregister(&sas_rphy_class);
1784 transport_class_unregister(&sas_end_dev_class);
1785 transport_class_unregister(&sas_expander_class);
1788 MODULE_AUTHOR("Christoph Hellwig");
1789 MODULE_DESCRIPTION("SAS Transport Attributes");
1790 MODULE_LICENSE("GPL");
1792 module_init(sas_transport_init);
1793 module_exit(sas_transport_exit);