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 = blk_fetch_request(q);
170 spin_unlock_irq(q->queue_lock);
172 handler = to_sas_internal(shost->transportt)->f->smp_handler;
173 ret = handler(shost, rphy, req);
176 spin_lock_irq(q->queue_lock);
178 req->end_io(req, ret);
182 static void sas_host_smp_request(struct request_queue *q)
184 sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL);
187 static void sas_non_host_smp_request(struct request_queue *q)
189 struct sas_rphy *rphy = q->queuedata;
190 sas_smp_request(q, rphy_to_shost(rphy), rphy);
193 static void sas_host_release(struct device *dev)
195 struct Scsi_Host *shost = dev_to_shost(dev);
196 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
197 struct request_queue *q = sas_host->q;
200 blk_cleanup_queue(q);
203 static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
205 struct request_queue *q;
210 void (*release)(struct device *);
212 if (!to_sas_internal(shost->transportt)->f->smp_handler) {
213 printk("%s can't handle SMP requests\n", shost->hostt->name);
218 q = blk_init_queue(sas_non_host_smp_request, NULL);
220 name = dev_name(dev);
223 q = blk_init_queue(sas_host_smp_request, NULL);
224 dev = &shost->shost_gendev;
225 snprintf(namebuf, sizeof(namebuf),
226 "sas_host%d", shost->host_no);
228 release = sas_host_release;
233 error = bsg_register_queue(q, dev, name, release);
235 blk_cleanup_queue(q);
242 to_sas_host_attrs(shost)->q = q;
247 q->queuedata = shost;
249 queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q);
253 static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy)
255 struct request_queue *q;
260 q = to_sas_host_attrs(shost)->q;
265 bsg_unregister_queue(q);
269 * SAS host attributes
272 static int sas_host_setup(struct transport_container *tc, struct device *dev,
275 struct Scsi_Host *shost = dev_to_shost(dev);
276 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
278 INIT_LIST_HEAD(&sas_host->rphy_list);
279 mutex_init(&sas_host->lock);
280 sas_host->next_target_id = 0;
281 sas_host->next_expander_id = 0;
282 sas_host->next_port_id = 0;
284 if (sas_bsg_initialize(shost, NULL))
285 dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n",
291 static int sas_host_remove(struct transport_container *tc, struct device *dev,
294 struct Scsi_Host *shost = dev_to_shost(dev);
296 sas_bsg_remove(shost, NULL);
301 static DECLARE_TRANSPORT_CLASS(sas_host_class,
302 "sas_host", sas_host_setup, sas_host_remove, NULL);
304 static int sas_host_match(struct attribute_container *cont,
307 struct Scsi_Host *shost;
308 struct sas_internal *i;
310 if (!scsi_is_host_device(dev))
312 shost = dev_to_shost(dev);
314 if (!shost->transportt)
316 if (shost->transportt->host_attrs.ac.class !=
317 &sas_host_class.class)
320 i = to_sas_internal(shost->transportt);
321 return &i->t.host_attrs.ac == cont;
324 static int do_sas_phy_delete(struct device *dev, void *data)
326 int pass = (int)(unsigned long)data;
328 if (pass == 0 && scsi_is_sas_port(dev))
329 sas_port_delete(dev_to_sas_port(dev));
330 else if (pass == 1 && scsi_is_sas_phy(dev))
331 sas_phy_delete(dev_to_phy(dev));
336 * sas_remove_children - tear down a devices SAS data structures
337 * @dev: device belonging to the sas object
339 * Removes all SAS PHYs and remote PHYs for a given object
341 void sas_remove_children(struct device *dev)
343 device_for_each_child(dev, (void *)0, do_sas_phy_delete);
344 device_for_each_child(dev, (void *)1, do_sas_phy_delete);
346 EXPORT_SYMBOL(sas_remove_children);
349 * sas_remove_host - tear down a Scsi_Host's SAS data structures
350 * @shost: Scsi Host that is torn down
352 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
353 * Must be called just before scsi_remove_host for SAS HBAs.
355 void sas_remove_host(struct Scsi_Host *shost)
357 sas_remove_children(&shost->shost_gendev);
359 EXPORT_SYMBOL(sas_remove_host);
366 #define sas_phy_show_simple(field, name, format_string, cast) \
368 show_sas_phy_##name(struct device *dev, \
369 struct device_attribute *attr, char *buf) \
371 struct sas_phy *phy = transport_class_to_phy(dev); \
373 return snprintf(buf, 20, format_string, cast phy->field); \
376 #define sas_phy_simple_attr(field, name, format_string, type) \
377 sas_phy_show_simple(field, name, format_string, (type)) \
378 static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
380 #define sas_phy_show_protocol(field, name) \
382 show_sas_phy_##name(struct device *dev, \
383 struct device_attribute *attr, char *buf) \
385 struct sas_phy *phy = transport_class_to_phy(dev); \
388 return snprintf(buf, 20, "none\n"); \
389 return get_sas_protocol_names(phy->field, buf); \
392 #define sas_phy_protocol_attr(field, name) \
393 sas_phy_show_protocol(field, name) \
394 static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
396 #define sas_phy_show_linkspeed(field) \
398 show_sas_phy_##field(struct device *dev, \
399 struct device_attribute *attr, char *buf) \
401 struct sas_phy *phy = transport_class_to_phy(dev); \
403 return get_sas_linkspeed_names(phy->field, buf); \
406 /* Fudge to tell if we're minimum or maximum */
407 #define sas_phy_store_linkspeed(field) \
409 store_sas_phy_##field(struct device *dev, \
410 struct device_attribute *attr, \
411 const char *buf, size_t count) \
413 struct sas_phy *phy = transport_class_to_phy(dev); \
414 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
415 struct sas_internal *i = to_sas_internal(shost->transportt); \
417 struct sas_phy_linkrates rates = {0}; \
420 error = set_sas_linkspeed_names(&value, buf); \
423 rates.field = value; \
424 error = i->f->set_phy_speed(phy, &rates); \
426 return error ? error : count; \
429 #define sas_phy_linkspeed_rw_attr(field) \
430 sas_phy_show_linkspeed(field) \
431 sas_phy_store_linkspeed(field) \
432 static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \
433 store_sas_phy_##field)
435 #define sas_phy_linkspeed_attr(field) \
436 sas_phy_show_linkspeed(field) \
437 static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
440 #define sas_phy_show_linkerror(field) \
442 show_sas_phy_##field(struct device *dev, \
443 struct device_attribute *attr, char *buf) \
445 struct sas_phy *phy = transport_class_to_phy(dev); \
446 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
447 struct sas_internal *i = to_sas_internal(shost->transportt); \
450 error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
453 return snprintf(buf, 20, "%u\n", phy->field); \
456 #define sas_phy_linkerror_attr(field) \
457 sas_phy_show_linkerror(field) \
458 static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
462 show_sas_device_type(struct device *dev,
463 struct device_attribute *attr, char *buf)
465 struct sas_phy *phy = transport_class_to_phy(dev);
467 if (!phy->identify.device_type)
468 return snprintf(buf, 20, "none\n");
469 return get_sas_device_type_names(phy->identify.device_type, buf);
471 static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
473 static ssize_t do_sas_phy_enable(struct device *dev,
474 size_t count, int enable)
476 struct sas_phy *phy = transport_class_to_phy(dev);
477 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
478 struct sas_internal *i = to_sas_internal(shost->transportt);
481 error = i->f->phy_enable(phy, enable);
484 phy->enabled = enable;
489 store_sas_phy_enable(struct device *dev, struct device_attribute *attr,
490 const char *buf, size_t count)
497 do_sas_phy_enable(dev, count, 0);
500 do_sas_phy_enable(dev, count, 1);
510 show_sas_phy_enable(struct device *dev, struct device_attribute *attr,
513 struct sas_phy *phy = transport_class_to_phy(dev);
515 return snprintf(buf, 20, "%d", phy->enabled);
518 static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable,
519 store_sas_phy_enable);
522 do_sas_phy_reset(struct device *dev, size_t count, int hard_reset)
524 struct sas_phy *phy = transport_class_to_phy(dev);
525 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
526 struct sas_internal *i = to_sas_internal(shost->transportt);
529 error = i->f->phy_reset(phy, hard_reset);
536 store_sas_link_reset(struct device *dev, struct device_attribute *attr,
537 const char *buf, size_t count)
539 return do_sas_phy_reset(dev, count, 0);
541 static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
544 store_sas_hard_reset(struct device *dev, struct device_attribute *attr,
545 const char *buf, size_t count)
547 return do_sas_phy_reset(dev, count, 1);
549 static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
551 sas_phy_protocol_attr(identify.initiator_port_protocols,
552 initiator_port_protocols);
553 sas_phy_protocol_attr(identify.target_port_protocols,
554 target_port_protocols);
555 sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
557 sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
558 //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int);
559 sas_phy_linkspeed_attr(negotiated_linkrate);
560 sas_phy_linkspeed_attr(minimum_linkrate_hw);
561 sas_phy_linkspeed_rw_attr(minimum_linkrate);
562 sas_phy_linkspeed_attr(maximum_linkrate_hw);
563 sas_phy_linkspeed_rw_attr(maximum_linkrate);
564 sas_phy_linkerror_attr(invalid_dword_count);
565 sas_phy_linkerror_attr(running_disparity_error_count);
566 sas_phy_linkerror_attr(loss_of_dword_sync_count);
567 sas_phy_linkerror_attr(phy_reset_problem_count);
570 static DECLARE_TRANSPORT_CLASS(sas_phy_class,
571 "sas_phy", NULL, NULL, NULL);
573 static int sas_phy_match(struct attribute_container *cont, struct device *dev)
575 struct Scsi_Host *shost;
576 struct sas_internal *i;
578 if (!scsi_is_sas_phy(dev))
580 shost = dev_to_shost(dev->parent);
582 if (!shost->transportt)
584 if (shost->transportt->host_attrs.ac.class !=
585 &sas_host_class.class)
588 i = to_sas_internal(shost->transportt);
589 return &i->phy_attr_cont.ac == cont;
592 static void sas_phy_release(struct device *dev)
594 struct sas_phy *phy = dev_to_phy(dev);
596 put_device(dev->parent);
601 * sas_phy_alloc - allocates and initialize a SAS PHY structure
602 * @parent: Parent device
605 * Allocates an SAS PHY structure. It will be added in the device tree
606 * below the device specified by @parent, which has to be either a Scsi_Host
610 * SAS PHY allocated or %NULL if the allocation failed.
612 struct sas_phy *sas_phy_alloc(struct device *parent, int number)
614 struct Scsi_Host *shost = dev_to_shost(parent);
617 phy = kzalloc(sizeof(*phy), GFP_KERNEL);
621 phy->number = number;
624 device_initialize(&phy->dev);
625 phy->dev.parent = get_device(parent);
626 phy->dev.release = sas_phy_release;
627 INIT_LIST_HEAD(&phy->port_siblings);
628 if (scsi_is_sas_expander_device(parent)) {
629 struct sas_rphy *rphy = dev_to_rphy(parent);
630 dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no,
631 rphy->scsi_target_id, number);
633 dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number);
635 transport_setup_device(&phy->dev);
639 EXPORT_SYMBOL(sas_phy_alloc);
642 * sas_phy_add - add a SAS PHY to the device hierarchy
643 * @phy: The PHY to be added
645 * Publishes a SAS PHY to the rest of the system.
647 int sas_phy_add(struct sas_phy *phy)
651 error = device_add(&phy->dev);
653 transport_add_device(&phy->dev);
654 transport_configure_device(&phy->dev);
659 EXPORT_SYMBOL(sas_phy_add);
662 * sas_phy_free - free a SAS PHY
663 * @phy: SAS PHY to free
665 * Frees the specified SAS PHY.
668 * This function must only be called on a PHY that has not
669 * sucessfully been added using sas_phy_add().
671 void sas_phy_free(struct sas_phy *phy)
673 transport_destroy_device(&phy->dev);
674 put_device(&phy->dev);
676 EXPORT_SYMBOL(sas_phy_free);
679 * sas_phy_delete - remove SAS PHY
680 * @phy: SAS PHY to remove
682 * Removes the specified SAS PHY. If the SAS PHY has an
683 * associated remote PHY it is removed before.
686 sas_phy_delete(struct sas_phy *phy)
688 struct device *dev = &phy->dev;
690 /* this happens if the phy is still part of a port when deleted */
691 BUG_ON(!list_empty(&phy->port_siblings));
693 transport_remove_device(dev);
695 transport_destroy_device(dev);
698 EXPORT_SYMBOL(sas_phy_delete);
701 * scsi_is_sas_phy - check if a struct device represents a SAS PHY
702 * @dev: device to check
705 * %1 if the device represents a SAS PHY, %0 else
707 int scsi_is_sas_phy(const struct device *dev)
709 return dev->release == sas_phy_release;
711 EXPORT_SYMBOL(scsi_is_sas_phy);
714 * SAS Port attributes
716 #define sas_port_show_simple(field, name, format_string, cast) \
718 show_sas_port_##name(struct device *dev, \
719 struct device_attribute *attr, char *buf) \
721 struct sas_port *port = transport_class_to_sas_port(dev); \
723 return snprintf(buf, 20, format_string, cast port->field); \
726 #define sas_port_simple_attr(field, name, format_string, type) \
727 sas_port_show_simple(field, name, format_string, (type)) \
728 static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
730 sas_port_simple_attr(num_phys, num_phys, "%d\n", int);
732 static DECLARE_TRANSPORT_CLASS(sas_port_class,
733 "sas_port", NULL, NULL, NULL);
735 static int sas_port_match(struct attribute_container *cont, struct device *dev)
737 struct Scsi_Host *shost;
738 struct sas_internal *i;
740 if (!scsi_is_sas_port(dev))
742 shost = dev_to_shost(dev->parent);
744 if (!shost->transportt)
746 if (shost->transportt->host_attrs.ac.class !=
747 &sas_host_class.class)
750 i = to_sas_internal(shost->transportt);
751 return &i->port_attr_cont.ac == cont;
755 static void sas_port_release(struct device *dev)
757 struct sas_port *port = dev_to_sas_port(dev);
759 BUG_ON(!list_empty(&port->phy_list));
761 put_device(dev->parent);
765 static void sas_port_create_link(struct sas_port *port,
770 res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj,
771 dev_name(&phy->dev));
774 res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port");
779 printk(KERN_ERR "%s: Cannot create port links, err=%d\n",
783 static void sas_port_delete_link(struct sas_port *port,
786 sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev));
787 sysfs_remove_link(&phy->dev.kobj, "port");
790 /** sas_port_alloc - allocate and initialize a SAS port structure
792 * @parent: parent device
793 * @port_id: port number
795 * Allocates a SAS port structure. It will be added to the device tree
796 * below the device specified by @parent which must be either a Scsi_Host
797 * or a sas_expander_device.
799 * Returns %NULL on error
801 struct sas_port *sas_port_alloc(struct device *parent, int port_id)
803 struct Scsi_Host *shost = dev_to_shost(parent);
804 struct sas_port *port;
806 port = kzalloc(sizeof(*port), GFP_KERNEL);
810 port->port_identifier = port_id;
812 device_initialize(&port->dev);
814 port->dev.parent = get_device(parent);
815 port->dev.release = sas_port_release;
817 mutex_init(&port->phy_list_mutex);
818 INIT_LIST_HEAD(&port->phy_list);
820 if (scsi_is_sas_expander_device(parent)) {
821 struct sas_rphy *rphy = dev_to_rphy(parent);
822 dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no,
823 rphy->scsi_target_id, port->port_identifier);
825 dev_set_name(&port->dev, "port-%d:%d", shost->host_no,
826 port->port_identifier);
828 transport_setup_device(&port->dev);
832 EXPORT_SYMBOL(sas_port_alloc);
834 /** sas_port_alloc_num - allocate and initialize a SAS port structure
836 * @parent: parent device
838 * Allocates a SAS port structure and a number to go with it. This
839 * interface is really for adapters where the port number has no
840 * meansing, so the sas class should manage them. It will be added to
841 * the device tree below the device specified by @parent which must be
842 * either a Scsi_Host or a sas_expander_device.
844 * Returns %NULL on error
846 struct sas_port *sas_port_alloc_num(struct device *parent)
849 struct Scsi_Host *shost = dev_to_shost(parent);
850 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
852 /* FIXME: use idr for this eventually */
853 mutex_lock(&sas_host->lock);
854 if (scsi_is_sas_expander_device(parent)) {
855 struct sas_rphy *rphy = dev_to_rphy(parent);
856 struct sas_expander_device *exp = rphy_to_expander_device(rphy);
858 index = exp->next_port_id++;
860 index = sas_host->next_port_id++;
861 mutex_unlock(&sas_host->lock);
862 return sas_port_alloc(parent, index);
864 EXPORT_SYMBOL(sas_port_alloc_num);
867 * sas_port_add - add a SAS port to the device hierarchy
868 * @port: port to be added
870 * publishes a port to the rest of the system
872 int sas_port_add(struct sas_port *port)
876 /* No phys should be added until this is made visible */
877 BUG_ON(!list_empty(&port->phy_list));
879 error = device_add(&port->dev);
884 transport_add_device(&port->dev);
885 transport_configure_device(&port->dev);
889 EXPORT_SYMBOL(sas_port_add);
892 * sas_port_free - free a SAS PORT
893 * @port: SAS PORT to free
895 * Frees the specified SAS PORT.
898 * This function must only be called on a PORT that has not
899 * sucessfully been added using sas_port_add().
901 void sas_port_free(struct sas_port *port)
903 transport_destroy_device(&port->dev);
904 put_device(&port->dev);
906 EXPORT_SYMBOL(sas_port_free);
909 * sas_port_delete - remove SAS PORT
910 * @port: SAS PORT to remove
912 * Removes the specified SAS PORT. If the SAS PORT has an
913 * associated phys, unlink them from the port as well.
915 void sas_port_delete(struct sas_port *port)
917 struct device *dev = &port->dev;
918 struct sas_phy *phy, *tmp_phy;
921 sas_rphy_delete(port->rphy);
925 mutex_lock(&port->phy_list_mutex);
926 list_for_each_entry_safe(phy, tmp_phy, &port->phy_list,
928 sas_port_delete_link(port, phy);
929 list_del_init(&phy->port_siblings);
931 mutex_unlock(&port->phy_list_mutex);
933 if (port->is_backlink) {
934 struct device *parent = port->dev.parent;
936 sysfs_remove_link(&port->dev.kobj, dev_name(parent));
937 port->is_backlink = 0;
940 transport_remove_device(dev);
942 transport_destroy_device(dev);
945 EXPORT_SYMBOL(sas_port_delete);
948 * scsi_is_sas_port - check if a struct device represents a SAS port
949 * @dev: device to check
952 * %1 if the device represents a SAS Port, %0 else
954 int scsi_is_sas_port(const struct device *dev)
956 return dev->release == sas_port_release;
958 EXPORT_SYMBOL(scsi_is_sas_port);
961 * sas_port_add_phy - add another phy to a port to form a wide port
962 * @port: port to add the phy to
965 * When a port is initially created, it is empty (has no phys). All
966 * ports must have at least one phy to operated, and all wide ports
967 * must have at least two. The current code makes no difference
968 * between ports and wide ports, but the only object that can be
969 * connected to a remote device is a port, so ports must be formed on
970 * all devices with phys if they're connected to anything.
972 void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy)
974 mutex_lock(&port->phy_list_mutex);
975 if (unlikely(!list_empty(&phy->port_siblings))) {
976 /* make sure we're already on this port */
979 list_for_each_entry(tmp, &port->phy_list, port_siblings)
982 /* If this trips, you added a phy that was already
983 * part of a different port */
984 if (unlikely(tmp != phy)) {
985 dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n",
986 dev_name(&phy->dev));
990 sas_port_create_link(port, phy);
991 list_add_tail(&phy->port_siblings, &port->phy_list);
994 mutex_unlock(&port->phy_list_mutex);
996 EXPORT_SYMBOL(sas_port_add_phy);
999 * sas_port_delete_phy - remove a phy from a port or wide port
1000 * @port: port to remove the phy from
1001 * @phy: phy to remove
1003 * This operation is used for tearing down ports again. It must be
1004 * done to every port or wide port before calling sas_port_delete.
1006 void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy)
1008 mutex_lock(&port->phy_list_mutex);
1009 sas_port_delete_link(port, phy);
1010 list_del_init(&phy->port_siblings);
1012 mutex_unlock(&port->phy_list_mutex);
1014 EXPORT_SYMBOL(sas_port_delete_phy);
1016 void sas_port_mark_backlink(struct sas_port *port)
1019 struct device *parent = port->dev.parent->parent->parent;
1021 if (port->is_backlink)
1023 port->is_backlink = 1;
1024 res = sysfs_create_link(&port->dev.kobj, &parent->kobj,
1030 printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n",
1034 EXPORT_SYMBOL(sas_port_mark_backlink);
1037 * SAS remote PHY attributes.
1040 #define sas_rphy_show_simple(field, name, format_string, cast) \
1042 show_sas_rphy_##name(struct device *dev, \
1043 struct device_attribute *attr, char *buf) \
1045 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
1047 return snprintf(buf, 20, format_string, cast rphy->field); \
1050 #define sas_rphy_simple_attr(field, name, format_string, type) \
1051 sas_rphy_show_simple(field, name, format_string, (type)) \
1052 static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
1053 show_sas_rphy_##name, NULL)
1055 #define sas_rphy_show_protocol(field, name) \
1057 show_sas_rphy_##name(struct device *dev, \
1058 struct device_attribute *attr, char *buf) \
1060 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
1063 return snprintf(buf, 20, "none\n"); \
1064 return get_sas_protocol_names(rphy->field, buf); \
1067 #define sas_rphy_protocol_attr(field, name) \
1068 sas_rphy_show_protocol(field, name) \
1069 static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
1070 show_sas_rphy_##name, NULL)
1073 show_sas_rphy_device_type(struct device *dev,
1074 struct device_attribute *attr, char *buf)
1076 struct sas_rphy *rphy = transport_class_to_rphy(dev);
1078 if (!rphy->identify.device_type)
1079 return snprintf(buf, 20, "none\n");
1080 return get_sas_device_type_names(
1081 rphy->identify.device_type, buf);
1084 static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
1085 show_sas_rphy_device_type, NULL);
1088 show_sas_rphy_enclosure_identifier(struct device *dev,
1089 struct device_attribute *attr, char *buf)
1091 struct sas_rphy *rphy = transport_class_to_rphy(dev);
1092 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1093 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1094 struct sas_internal *i = to_sas_internal(shost->transportt);
1099 * Only devices behind an expander are supported, because the
1100 * enclosure identifier is a SMP feature.
1102 if (scsi_is_sas_phy_local(phy))
1105 error = i->f->get_enclosure_identifier(rphy, &identifier);
1108 return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
1111 static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
1112 show_sas_rphy_enclosure_identifier, NULL);
1115 show_sas_rphy_bay_identifier(struct device *dev,
1116 struct device_attribute *attr, char *buf)
1118 struct sas_rphy *rphy = transport_class_to_rphy(dev);
1119 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1120 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1121 struct sas_internal *i = to_sas_internal(shost->transportt);
1124 if (scsi_is_sas_phy_local(phy))
1127 val = i->f->get_bay_identifier(rphy);
1130 return sprintf(buf, "%d\n", val);
1133 static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
1134 show_sas_rphy_bay_identifier, NULL);
1136 sas_rphy_protocol_attr(identify.initiator_port_protocols,
1137 initiator_port_protocols);
1138 sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
1139 sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
1140 unsigned long long);
1141 sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
1143 /* only need 8 bytes of data plus header (4 or 8) */
1146 int sas_read_port_mode_page(struct scsi_device *sdev)
1148 char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata;
1149 struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target);
1150 struct sas_end_device *rdev;
1151 struct scsi_mode_data mode_data;
1154 BUG_ON(rphy->identify.device_type != SAS_END_DEVICE);
1156 rdev = rphy_to_end_device(rphy);
1161 res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
1165 if (!scsi_status_is_good(res))
1168 msdata = buffer + mode_data.header_length +
1169 mode_data.block_descriptor_length;
1171 if (msdata - buffer > BUF_SIZE - 8)
1176 rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0;
1177 rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5];
1178 rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7];
1184 EXPORT_SYMBOL(sas_read_port_mode_page);
1186 static DECLARE_TRANSPORT_CLASS(sas_end_dev_class,
1187 "sas_end_device", NULL, NULL, NULL);
1189 #define sas_end_dev_show_simple(field, name, format_string, cast) \
1191 show_sas_end_dev_##name(struct device *dev, \
1192 struct device_attribute *attr, char *buf) \
1194 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
1195 struct sas_end_device *rdev = rphy_to_end_device(rphy); \
1197 return snprintf(buf, 20, format_string, cast rdev->field); \
1200 #define sas_end_dev_simple_attr(field, name, format_string, type) \
1201 sas_end_dev_show_simple(field, name, format_string, (type)) \
1202 static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
1203 show_sas_end_dev_##name, NULL)
1205 sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int);
1206 sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout,
1208 sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout,
1211 static DECLARE_TRANSPORT_CLASS(sas_expander_class,
1212 "sas_expander", NULL, NULL, NULL);
1214 #define sas_expander_show_simple(field, name, format_string, cast) \
1216 show_sas_expander_##name(struct device *dev, \
1217 struct device_attribute *attr, char *buf) \
1219 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
1220 struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
1222 return snprintf(buf, 20, format_string, cast edev->field); \
1225 #define sas_expander_simple_attr(field, name, format_string, type) \
1226 sas_expander_show_simple(field, name, format_string, (type)) \
1227 static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \
1228 show_sas_expander_##name, NULL)
1230 sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *);
1231 sas_expander_simple_attr(product_id, product_id, "%s\n", char *);
1232 sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *);
1233 sas_expander_simple_attr(component_vendor_id, component_vendor_id,
1235 sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int);
1236 sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n",
1238 sas_expander_simple_attr(level, level, "%d\n", int);
1240 static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
1241 "sas_device", NULL, NULL, NULL);
1243 static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
1245 struct Scsi_Host *shost;
1246 struct sas_internal *i;
1248 if (!scsi_is_sas_rphy(dev))
1250 shost = dev_to_shost(dev->parent->parent);
1252 if (!shost->transportt)
1254 if (shost->transportt->host_attrs.ac.class !=
1255 &sas_host_class.class)
1258 i = to_sas_internal(shost->transportt);
1259 return &i->rphy_attr_cont.ac == cont;
1262 static int sas_end_dev_match(struct attribute_container *cont,
1265 struct Scsi_Host *shost;
1266 struct sas_internal *i;
1267 struct sas_rphy *rphy;
1269 if (!scsi_is_sas_rphy(dev))
1271 shost = dev_to_shost(dev->parent->parent);
1272 rphy = dev_to_rphy(dev);
1274 if (!shost->transportt)
1276 if (shost->transportt->host_attrs.ac.class !=
1277 &sas_host_class.class)
1280 i = to_sas_internal(shost->transportt);
1281 return &i->end_dev_attr_cont.ac == cont &&
1282 rphy->identify.device_type == SAS_END_DEVICE;
1285 static int sas_expander_match(struct attribute_container *cont,
1288 struct Scsi_Host *shost;
1289 struct sas_internal *i;
1290 struct sas_rphy *rphy;
1292 if (!scsi_is_sas_rphy(dev))
1294 shost = dev_to_shost(dev->parent->parent);
1295 rphy = dev_to_rphy(dev);
1297 if (!shost->transportt)
1299 if (shost->transportt->host_attrs.ac.class !=
1300 &sas_host_class.class)
1303 i = to_sas_internal(shost->transportt);
1304 return &i->expander_attr_cont.ac == cont &&
1305 (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
1306 rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE);
1309 static void sas_expander_release(struct device *dev)
1311 struct sas_rphy *rphy = dev_to_rphy(dev);
1312 struct sas_expander_device *edev = rphy_to_expander_device(rphy);
1315 blk_cleanup_queue(rphy->q);
1317 put_device(dev->parent);
1321 static void sas_end_device_release(struct device *dev)
1323 struct sas_rphy *rphy = dev_to_rphy(dev);
1324 struct sas_end_device *edev = rphy_to_end_device(rphy);
1327 blk_cleanup_queue(rphy->q);
1329 put_device(dev->parent);
1334 * sas_rphy_initialize - common rphy intialization
1335 * @rphy: rphy to initialise
1337 * Used by both sas_end_device_alloc() and sas_expander_alloc() to
1338 * initialise the common rphy component of each.
1340 static void sas_rphy_initialize(struct sas_rphy *rphy)
1342 INIT_LIST_HEAD(&rphy->list);
1346 * sas_end_device_alloc - allocate an rphy for an end device
1347 * @parent: which port
1349 * Allocates an SAS remote PHY structure, connected to @parent.
1352 * SAS PHY allocated or %NULL if the allocation failed.
1354 struct sas_rphy *sas_end_device_alloc(struct sas_port *parent)
1356 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1357 struct sas_end_device *rdev;
1359 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1364 device_initialize(&rdev->rphy.dev);
1365 rdev->rphy.dev.parent = get_device(&parent->dev);
1366 rdev->rphy.dev.release = sas_end_device_release;
1367 if (scsi_is_sas_expander_device(parent->dev.parent)) {
1368 struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent);
1369 dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d",
1370 shost->host_no, rphy->scsi_target_id,
1371 parent->port_identifier);
1373 dev_set_name(&rdev->rphy.dev, "end_device-%d:%d",
1374 shost->host_no, parent->port_identifier);
1375 rdev->rphy.identify.device_type = SAS_END_DEVICE;
1376 sas_rphy_initialize(&rdev->rphy);
1377 transport_setup_device(&rdev->rphy.dev);
1381 EXPORT_SYMBOL(sas_end_device_alloc);
1384 * sas_expander_alloc - allocate an rphy for an end device
1385 * @parent: which port
1386 * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE
1388 * Allocates an SAS remote PHY structure, connected to @parent.
1391 * SAS PHY allocated or %NULL if the allocation failed.
1393 struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
1394 enum sas_device_type type)
1396 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1397 struct sas_expander_device *rdev;
1398 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1400 BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE &&
1401 type != SAS_FANOUT_EXPANDER_DEVICE);
1403 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1408 device_initialize(&rdev->rphy.dev);
1409 rdev->rphy.dev.parent = get_device(&parent->dev);
1410 rdev->rphy.dev.release = sas_expander_release;
1411 mutex_lock(&sas_host->lock);
1412 rdev->rphy.scsi_target_id = sas_host->next_expander_id++;
1413 mutex_unlock(&sas_host->lock);
1414 dev_set_name(&rdev->rphy.dev, "expander-%d:%d",
1415 shost->host_no, rdev->rphy.scsi_target_id);
1416 rdev->rphy.identify.device_type = type;
1417 sas_rphy_initialize(&rdev->rphy);
1418 transport_setup_device(&rdev->rphy.dev);
1422 EXPORT_SYMBOL(sas_expander_alloc);
1425 * sas_rphy_add - add a SAS remote PHY to the device hierarchy
1426 * @rphy: The remote PHY to be added
1428 * Publishes a SAS remote PHY to the rest of the system.
1430 int sas_rphy_add(struct sas_rphy *rphy)
1432 struct sas_port *parent = dev_to_sas_port(rphy->dev.parent);
1433 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
1434 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1435 struct sas_identify *identify = &rphy->identify;
1440 parent->rphy = rphy;
1442 error = device_add(&rphy->dev);
1445 transport_add_device(&rphy->dev);
1446 transport_configure_device(&rphy->dev);
1447 if (sas_bsg_initialize(shost, rphy))
1448 printk("fail to a bsg device %s\n", dev_name(&rphy->dev));
1451 mutex_lock(&sas_host->lock);
1452 list_add_tail(&rphy->list, &sas_host->rphy_list);
1453 if (identify->device_type == SAS_END_DEVICE &&
1454 (identify->target_port_protocols &
1455 (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
1456 rphy->scsi_target_id = sas_host->next_target_id++;
1457 else if (identify->device_type == SAS_END_DEVICE)
1458 rphy->scsi_target_id = -1;
1459 mutex_unlock(&sas_host->lock);
1461 if (identify->device_type == SAS_END_DEVICE &&
1462 rphy->scsi_target_id != -1) {
1463 scsi_scan_target(&rphy->dev, 0,
1464 rphy->scsi_target_id, SCAN_WILD_CARD, 0);
1469 EXPORT_SYMBOL(sas_rphy_add);
1472 * sas_rphy_free - free a SAS remote PHY
1473 * @rphy: SAS remote PHY to free
1475 * Frees the specified SAS remote PHY.
1478 * This function must only be called on a remote
1479 * PHY that has not sucessfully been added using
1480 * sas_rphy_add() (or has been sas_rphy_remove()'d)
1482 void sas_rphy_free(struct sas_rphy *rphy)
1484 struct device *dev = &rphy->dev;
1485 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1486 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1488 mutex_lock(&sas_host->lock);
1489 list_del(&rphy->list);
1490 mutex_unlock(&sas_host->lock);
1492 sas_bsg_remove(shost, rphy);
1494 transport_destroy_device(dev);
1498 EXPORT_SYMBOL(sas_rphy_free);
1501 * sas_rphy_delete - remove and free SAS remote PHY
1502 * @rphy: SAS remote PHY to remove and free
1504 * Removes the specified SAS remote PHY and frees it.
1507 sas_rphy_delete(struct sas_rphy *rphy)
1509 sas_rphy_remove(rphy);
1510 sas_rphy_free(rphy);
1512 EXPORT_SYMBOL(sas_rphy_delete);
1515 * sas_rphy_remove - remove SAS remote PHY
1516 * @rphy: SAS remote phy to remove
1518 * Removes the specified SAS remote PHY.
1521 sas_rphy_remove(struct sas_rphy *rphy)
1523 struct device *dev = &rphy->dev;
1524 struct sas_port *parent = dev_to_sas_port(dev->parent);
1526 switch (rphy->identify.device_type) {
1527 case SAS_END_DEVICE:
1528 scsi_remove_target(dev);
1530 case SAS_EDGE_EXPANDER_DEVICE:
1531 case SAS_FANOUT_EXPANDER_DEVICE:
1532 sas_remove_children(dev);
1538 transport_remove_device(dev);
1541 parent->rphy = NULL;
1543 EXPORT_SYMBOL(sas_rphy_remove);
1546 * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY
1547 * @dev: device to check
1550 * %1 if the device represents a SAS remote PHY, %0 else
1552 int scsi_is_sas_rphy(const struct device *dev)
1554 return dev->release == sas_end_device_release ||
1555 dev->release == sas_expander_release;
1557 EXPORT_SYMBOL(scsi_is_sas_rphy);
1564 static int sas_user_scan(struct Scsi_Host *shost, uint channel,
1567 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1568 struct sas_rphy *rphy;
1570 mutex_lock(&sas_host->lock);
1571 list_for_each_entry(rphy, &sas_host->rphy_list, list) {
1572 if (rphy->identify.device_type != SAS_END_DEVICE ||
1573 rphy->scsi_target_id == -1)
1576 if ((channel == SCAN_WILD_CARD || channel == 0) &&
1577 (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
1578 scsi_scan_target(&rphy->dev, 0,
1579 rphy->scsi_target_id, lun, 1);
1582 mutex_unlock(&sas_host->lock);
1589 * Setup / Teardown code
1592 #define SETUP_TEMPLATE(attrb, field, perm, test) \
1593 i->private_##attrb[count] = dev_attr_##field; \
1594 i->private_##attrb[count].attr.mode = perm; \
1595 i->attrb[count] = &i->private_##attrb[count]; \
1599 #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \
1600 i->private_##attrb[count] = dev_attr_##field; \
1601 i->private_##attrb[count].attr.mode = perm; \
1603 i->private_##attrb[count].attr.mode = ro_perm; \
1604 i->private_##attrb[count].store = NULL; \
1606 i->attrb[count] = &i->private_##attrb[count]; \
1610 #define SETUP_RPORT_ATTRIBUTE(field) \
1611 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
1613 #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
1614 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
1616 #define SETUP_PHY_ATTRIBUTE(field) \
1617 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
1619 #define SETUP_PHY_ATTRIBUTE_RW(field) \
1620 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1621 !i->f->set_phy_speed, S_IRUGO)
1623 #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \
1624 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1625 !i->f->func, S_IRUGO)
1627 #define SETUP_PORT_ATTRIBUTE(field) \
1628 SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
1630 #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \
1631 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
1633 #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \
1634 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1)
1636 #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \
1637 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func)
1639 #define SETUP_END_DEV_ATTRIBUTE(field) \
1640 SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
1642 #define SETUP_EXPANDER_ATTRIBUTE(field) \
1643 SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
1646 * sas_attach_transport - instantiate SAS transport template
1647 * @ft: SAS transport class function template
1649 struct scsi_transport_template *
1650 sas_attach_transport(struct sas_function_template *ft)
1652 struct sas_internal *i;
1655 i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL);
1659 i->t.user_scan = sas_user_scan;
1661 i->t.host_attrs.ac.attrs = &i->host_attrs[0];
1662 i->t.host_attrs.ac.class = &sas_host_class.class;
1663 i->t.host_attrs.ac.match = sas_host_match;
1664 transport_container_register(&i->t.host_attrs);
1665 i->t.host_size = sizeof(struct sas_host_attrs);
1667 i->phy_attr_cont.ac.class = &sas_phy_class.class;
1668 i->phy_attr_cont.ac.attrs = &i->phy_attrs[0];
1669 i->phy_attr_cont.ac.match = sas_phy_match;
1670 transport_container_register(&i->phy_attr_cont);
1672 i->port_attr_cont.ac.class = &sas_port_class.class;
1673 i->port_attr_cont.ac.attrs = &i->port_attrs[0];
1674 i->port_attr_cont.ac.match = sas_port_match;
1675 transport_container_register(&i->port_attr_cont);
1677 i->rphy_attr_cont.ac.class = &sas_rphy_class.class;
1678 i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0];
1679 i->rphy_attr_cont.ac.match = sas_rphy_match;
1680 transport_container_register(&i->rphy_attr_cont);
1682 i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class;
1683 i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0];
1684 i->end_dev_attr_cont.ac.match = sas_end_dev_match;
1685 transport_container_register(&i->end_dev_attr_cont);
1687 i->expander_attr_cont.ac.class = &sas_expander_class.class;
1688 i->expander_attr_cont.ac.attrs = &i->expander_attrs[0];
1689 i->expander_attr_cont.ac.match = sas_expander_match;
1690 transport_container_register(&i->expander_attr_cont);
1695 SETUP_PORT_ATTRIBUTE(num_phys);
1696 i->host_attrs[count] = NULL;
1699 SETUP_PHY_ATTRIBUTE(initiator_port_protocols);
1700 SETUP_PHY_ATTRIBUTE(target_port_protocols);
1701 SETUP_PHY_ATTRIBUTE(device_type);
1702 SETUP_PHY_ATTRIBUTE(sas_address);
1703 SETUP_PHY_ATTRIBUTE(phy_identifier);
1704 //SETUP_PHY_ATTRIBUTE(port_identifier);
1705 SETUP_PHY_ATTRIBUTE(negotiated_linkrate);
1706 SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw);
1707 SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate);
1708 SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw);
1709 SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate);
1711 SETUP_PHY_ATTRIBUTE(invalid_dword_count);
1712 SETUP_PHY_ATTRIBUTE(running_disparity_error_count);
1713 SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count);
1714 SETUP_PHY_ATTRIBUTE(phy_reset_problem_count);
1715 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset);
1716 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset);
1717 SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable);
1718 i->phy_attrs[count] = NULL;
1721 SETUP_PORT_ATTRIBUTE(num_phys);
1722 i->port_attrs[count] = NULL;
1725 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols);
1726 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols);
1727 SETUP_RPORT_ATTRIBUTE(rphy_device_type);
1728 SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
1729 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
1730 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier,
1731 get_enclosure_identifier);
1732 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier,
1733 get_bay_identifier);
1734 i->rphy_attrs[count] = NULL;
1737 SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning);
1738 SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout);
1739 SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout);
1740 i->end_dev_attrs[count] = NULL;
1743 SETUP_EXPANDER_ATTRIBUTE(vendor_id);
1744 SETUP_EXPANDER_ATTRIBUTE(product_id);
1745 SETUP_EXPANDER_ATTRIBUTE(product_rev);
1746 SETUP_EXPANDER_ATTRIBUTE(component_vendor_id);
1747 SETUP_EXPANDER_ATTRIBUTE(component_id);
1748 SETUP_EXPANDER_ATTRIBUTE(component_revision_id);
1749 SETUP_EXPANDER_ATTRIBUTE(level);
1750 i->expander_attrs[count] = NULL;
1754 EXPORT_SYMBOL(sas_attach_transport);
1757 * sas_release_transport - release SAS transport template instance
1758 * @t: transport template instance
1760 void sas_release_transport(struct scsi_transport_template *t)
1762 struct sas_internal *i = to_sas_internal(t);
1764 transport_container_unregister(&i->t.host_attrs);
1765 transport_container_unregister(&i->phy_attr_cont);
1766 transport_container_unregister(&i->port_attr_cont);
1767 transport_container_unregister(&i->rphy_attr_cont);
1768 transport_container_unregister(&i->end_dev_attr_cont);
1769 transport_container_unregister(&i->expander_attr_cont);
1773 EXPORT_SYMBOL(sas_release_transport);
1775 static __init int sas_transport_init(void)
1779 error = transport_class_register(&sas_host_class);
1782 error = transport_class_register(&sas_phy_class);
1784 goto out_unregister_transport;
1785 error = transport_class_register(&sas_port_class);
1787 goto out_unregister_phy;
1788 error = transport_class_register(&sas_rphy_class);
1790 goto out_unregister_port;
1791 error = transport_class_register(&sas_end_dev_class);
1793 goto out_unregister_rphy;
1794 error = transport_class_register(&sas_expander_class);
1796 goto out_unregister_end_dev;
1800 out_unregister_end_dev:
1801 transport_class_unregister(&sas_end_dev_class);
1802 out_unregister_rphy:
1803 transport_class_unregister(&sas_rphy_class);
1804 out_unregister_port:
1805 transport_class_unregister(&sas_port_class);
1807 transport_class_unregister(&sas_phy_class);
1808 out_unregister_transport:
1809 transport_class_unregister(&sas_host_class);
1815 static void __exit sas_transport_exit(void)
1817 transport_class_unregister(&sas_host_class);
1818 transport_class_unregister(&sas_phy_class);
1819 transport_class_unregister(&sas_port_class);
1820 transport_class_unregister(&sas_rphy_class);
1821 transport_class_unregister(&sas_end_dev_class);
1822 transport_class_unregister(&sas_expander_class);
1825 MODULE_AUTHOR("Christoph Hellwig");
1826 MODULE_DESCRIPTION("SAS Transport Attributes");
1827 MODULE_LICENSE("GPL");
1829 module_init(sas_transport_init);
1830 module_exit(sas_transport_exit);