2 * Copyright (C) 2005-2006 Dell Inc.
3 * Released under GPL v2.
5 * Serial Attached SCSI (SAS) transport class.
7 * The SAS transport class contains common code to deal with SAS HBAs,
8 * an aproximated representation of SAS topologies in the driver model,
9 * and various sysfs attributes to expose these topologies and managment
10 * interfaces to userspace.
12 * In addition to the basic SCSI core objects this transport class
13 * introduces two additional intermediate objects: The SAS PHY
14 * as represented by struct sas_phy defines an "outgoing" PHY on
15 * a SAS HBA or Expander, and the SAS remote PHY represented by
16 * struct sas_rphy defines an "incoming" PHY on a SAS Expander or
17 * end device. Note that this is purely a software concept, the
18 * underlying hardware for a PHY and a remote PHY is the exactly
21 * There is no concept of a SAS port in this code, users can see
22 * what PHYs form a wide port based on the port_identifier attribute,
23 * which is the same for all PHYs in a port.
26 #include <linux/init.h>
27 #include <linux/module.h>
28 #include <linux/err.h>
29 #include <linux/slab.h>
30 #include <linux/string.h>
32 #include <scsi/scsi.h>
33 #include <scsi/scsi_device.h>
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_transport.h>
36 #include <scsi/scsi_transport_sas.h>
39 #define SAS_HOST_ATTRS 0
40 #define SAS_PORT_ATTRS 17
41 #define SAS_RPORT_ATTRS 7
44 struct scsi_transport_template t;
45 struct sas_function_template *f;
47 struct class_device_attribute private_host_attrs[SAS_HOST_ATTRS];
48 struct class_device_attribute private_phy_attrs[SAS_PORT_ATTRS];
49 struct class_device_attribute private_rphy_attrs[SAS_RPORT_ATTRS];
51 struct transport_container phy_attr_cont;
52 struct transport_container rphy_attr_cont;
55 * The array of null terminated pointers to attributes
56 * needed by scsi_sysfs.c
58 struct class_device_attribute *host_attrs[SAS_HOST_ATTRS + 1];
59 struct class_device_attribute *phy_attrs[SAS_PORT_ATTRS + 1];
60 struct class_device_attribute *rphy_attrs[SAS_RPORT_ATTRS + 1];
62 #define to_sas_internal(tmpl) container_of(tmpl, struct sas_internal, t)
64 struct sas_host_attrs {
65 struct list_head rphy_list;
69 #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
73 * Hack to allow attributes of the same name in different objects.
75 #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
76 struct class_device_attribute class_device_attr_##_prefix##_##_name = \
77 __ATTR(_name,_mode,_show,_store)
81 * Pretty printing helpers
84 #define sas_bitfield_name_match(title, table) \
86 get_sas_##title##_names(u32 table_key, char *buf) \
92 for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
93 if (table[i].value & table_key) { \
94 len += sprintf(buf + len, "%s%s", \
95 prefix, table[i].name); \
99 len += sprintf(buf + len, "\n"); \
103 #define sas_bitfield_name_search(title, table) \
105 get_sas_##title##_names(u32 table_key, char *buf) \
110 for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
111 if (table[i].value == table_key) { \
112 len += sprintf(buf + len, "%s", \
117 len += sprintf(buf + len, "\n"); \
124 } sas_device_type_names[] = {
125 { SAS_PHY_UNUSED, "unused" },
126 { SAS_END_DEVICE, "end device" },
127 { SAS_EDGE_EXPANDER_DEVICE, "edge expander" },
128 { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" },
130 sas_bitfield_name_search(device_type, sas_device_type_names)
136 } sas_protocol_names[] = {
137 { SAS_PROTOCOL_SATA, "sata" },
138 { SAS_PROTOCOL_SMP, "smp" },
139 { SAS_PROTOCOL_STP, "stp" },
140 { SAS_PROTOCOL_SSP, "ssp" },
142 sas_bitfield_name_match(protocol, sas_protocol_names)
147 } sas_linkspeed_names[] = {
148 { SAS_LINK_RATE_UNKNOWN, "Unknown" },
149 { SAS_PHY_DISABLED, "Phy disabled" },
150 { SAS_LINK_RATE_FAILED, "Link Rate failed" },
151 { SAS_SATA_SPINUP_HOLD, "Spin-up hold" },
152 { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" },
153 { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" },
155 sas_bitfield_name_search(linkspeed, sas_linkspeed_names)
159 * SAS host attributes
162 static int sas_host_setup(struct transport_container *tc, struct device *dev,
163 struct class_device *cdev)
165 struct Scsi_Host *shost = dev_to_shost(dev);
166 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
168 INIT_LIST_HEAD(&sas_host->rphy_list);
169 mutex_init(&sas_host->lock);
170 sas_host->next_target_id = 0;
174 static DECLARE_TRANSPORT_CLASS(sas_host_class,
175 "sas_host", sas_host_setup, NULL, NULL);
177 static int sas_host_match(struct attribute_container *cont,
180 struct Scsi_Host *shost;
181 struct sas_internal *i;
183 if (!scsi_is_host_device(dev))
185 shost = dev_to_shost(dev);
187 if (!shost->transportt)
189 if (shost->transportt->host_attrs.ac.class !=
190 &sas_host_class.class)
193 i = to_sas_internal(shost->transportt);
194 return &i->t.host_attrs.ac == cont;
197 static int do_sas_phy_delete(struct device *dev, void *data)
199 if (scsi_is_sas_phy(dev))
200 sas_phy_delete(dev_to_phy(dev));
205 * sas_remove_host -- tear down a Scsi_Host's SAS data structures
206 * @shost: Scsi Host that is torn down
208 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
209 * Must be called just before scsi_remove_host for SAS HBAs.
211 void sas_remove_host(struct Scsi_Host *shost)
213 device_for_each_child(&shost->shost_gendev, NULL, do_sas_phy_delete);
215 EXPORT_SYMBOL(sas_remove_host);
219 * SAS Port attributes
222 #define sas_phy_show_simple(field, name, format_string, cast) \
224 show_sas_phy_##name(struct class_device *cdev, char *buf) \
226 struct sas_phy *phy = transport_class_to_phy(cdev); \
228 return snprintf(buf, 20, format_string, cast phy->field); \
231 #define sas_phy_simple_attr(field, name, format_string, type) \
232 sas_phy_show_simple(field, name, format_string, (type)) \
233 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
235 #define sas_phy_show_protocol(field, name) \
237 show_sas_phy_##name(struct class_device *cdev, char *buf) \
239 struct sas_phy *phy = transport_class_to_phy(cdev); \
242 return snprintf(buf, 20, "none\n"); \
243 return get_sas_protocol_names(phy->field, buf); \
246 #define sas_phy_protocol_attr(field, name) \
247 sas_phy_show_protocol(field, name) \
248 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
250 #define sas_phy_show_linkspeed(field) \
252 show_sas_phy_##field(struct class_device *cdev, char *buf) \
254 struct sas_phy *phy = transport_class_to_phy(cdev); \
256 return get_sas_linkspeed_names(phy->field, buf); \
259 #define sas_phy_linkspeed_attr(field) \
260 sas_phy_show_linkspeed(field) \
261 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
263 #define sas_phy_show_linkerror(field) \
265 show_sas_phy_##field(struct class_device *cdev, char *buf) \
267 struct sas_phy *phy = transport_class_to_phy(cdev); \
268 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
269 struct sas_internal *i = to_sas_internal(shost->transportt); \
272 if (!phy->local_attached) \
275 error = i->f->get_linkerrors(phy); \
278 return snprintf(buf, 20, "%u\n", phy->field); \
281 #define sas_phy_linkerror_attr(field) \
282 sas_phy_show_linkerror(field) \
283 static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
287 show_sas_device_type(struct class_device *cdev, char *buf)
289 struct sas_phy *phy = transport_class_to_phy(cdev);
291 if (!phy->identify.device_type)
292 return snprintf(buf, 20, "none\n");
293 return get_sas_device_type_names(phy->identify.device_type, buf);
295 static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
297 static ssize_t do_sas_phy_reset(struct class_device *cdev,
298 size_t count, int hard_reset)
300 struct sas_phy *phy = transport_class_to_phy(cdev);
301 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
302 struct sas_internal *i = to_sas_internal(shost->transportt);
305 if (!phy->local_attached)
308 error = i->f->phy_reset(phy, hard_reset);
314 static ssize_t store_sas_link_reset(struct class_device *cdev,
315 const char *buf, size_t count)
317 return do_sas_phy_reset(cdev, count, 0);
319 static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
321 static ssize_t store_sas_hard_reset(struct class_device *cdev,
322 const char *buf, size_t count)
324 return do_sas_phy_reset(cdev, count, 1);
326 static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
328 sas_phy_protocol_attr(identify.initiator_port_protocols,
329 initiator_port_protocols);
330 sas_phy_protocol_attr(identify.target_port_protocols,
331 target_port_protocols);
332 sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
334 sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
335 sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", u8);
336 sas_phy_linkspeed_attr(negotiated_linkrate);
337 sas_phy_linkspeed_attr(minimum_linkrate_hw);
338 sas_phy_linkspeed_attr(minimum_linkrate);
339 sas_phy_linkspeed_attr(maximum_linkrate_hw);
340 sas_phy_linkspeed_attr(maximum_linkrate);
341 sas_phy_linkerror_attr(invalid_dword_count);
342 sas_phy_linkerror_attr(running_disparity_error_count);
343 sas_phy_linkerror_attr(loss_of_dword_sync_count);
344 sas_phy_linkerror_attr(phy_reset_problem_count);
347 static DECLARE_TRANSPORT_CLASS(sas_phy_class,
348 "sas_phy", NULL, NULL, NULL);
350 static int sas_phy_match(struct attribute_container *cont, struct device *dev)
352 struct Scsi_Host *shost;
353 struct sas_internal *i;
355 if (!scsi_is_sas_phy(dev))
357 shost = dev_to_shost(dev->parent);
359 if (!shost->transportt)
361 if (shost->transportt->host_attrs.ac.class !=
362 &sas_host_class.class)
365 i = to_sas_internal(shost->transportt);
366 return &i->phy_attr_cont.ac == cont;
369 static void sas_phy_release(struct device *dev)
371 struct sas_phy *phy = dev_to_phy(dev);
373 put_device(dev->parent);
378 * sas_phy_alloc -- allocates and initialize a SAS PHY structure
379 * @parent: Parent device
382 * Allocates an SAS PHY structure. It will be added in the device tree
383 * below the device specified by @parent, which has to be either a Scsi_Host
387 * SAS PHY allocated or %NULL if the allocation failed.
389 struct sas_phy *sas_phy_alloc(struct device *parent, int number)
391 struct Scsi_Host *shost = dev_to_shost(parent);
394 phy = kzalloc(sizeof(*phy), GFP_KERNEL);
400 phy->number = number;
402 device_initialize(&phy->dev);
403 phy->dev.parent = get_device(parent);
404 phy->dev.release = sas_phy_release;
405 sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number);
407 transport_setup_device(&phy->dev);
411 EXPORT_SYMBOL(sas_phy_alloc);
414 * sas_phy_add -- add a SAS PHY to the device hierachy
415 * @phy: The PHY to be added
417 * Publishes a SAS PHY to the rest of the system.
419 int sas_phy_add(struct sas_phy *phy)
423 error = device_add(&phy->dev);
425 transport_add_device(&phy->dev);
426 transport_configure_device(&phy->dev);
431 EXPORT_SYMBOL(sas_phy_add);
434 * sas_phy_free -- free a SAS PHY
435 * @phy: SAS PHY to free
437 * Frees the specified SAS PHY.
440 * This function must only be called on a PHY that has not
441 * sucessfully been added using sas_phy_add().
443 void sas_phy_free(struct sas_phy *phy)
445 transport_destroy_device(&phy->dev);
446 put_device(phy->dev.parent);
447 put_device(phy->dev.parent);
448 put_device(phy->dev.parent);
451 EXPORT_SYMBOL(sas_phy_free);
454 * sas_phy_delete -- remove SAS PHY
455 * @phy: SAS PHY to remove
457 * Removes the specified SAS PHY. If the SAS PHY has an
458 * associated remote PHY it is removed before.
461 sas_phy_delete(struct sas_phy *phy)
463 struct device *dev = &phy->dev;
466 sas_rphy_delete(phy->rphy);
468 transport_remove_device(dev);
470 transport_destroy_device(dev);
471 put_device(dev->parent);
473 EXPORT_SYMBOL(sas_phy_delete);
476 * scsi_is_sas_phy -- check if a struct device represents a SAS PHY
477 * @dev: device to check
480 * %1 if the device represents a SAS PHY, %0 else
482 int scsi_is_sas_phy(const struct device *dev)
484 return dev->release == sas_phy_release;
486 EXPORT_SYMBOL(scsi_is_sas_phy);
489 * SAS remote PHY attributes.
492 #define sas_rphy_show_simple(field, name, format_string, cast) \
494 show_sas_rphy_##name(struct class_device *cdev, char *buf) \
496 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
498 return snprintf(buf, 20, format_string, cast rphy->field); \
501 #define sas_rphy_simple_attr(field, name, format_string, type) \
502 sas_rphy_show_simple(field, name, format_string, (type)) \
503 static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
504 show_sas_rphy_##name, NULL)
506 #define sas_rphy_show_protocol(field, name) \
508 show_sas_rphy_##name(struct class_device *cdev, char *buf) \
510 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
513 return snprintf(buf, 20, "none\n"); \
514 return get_sas_protocol_names(rphy->field, buf); \
517 #define sas_rphy_protocol_attr(field, name) \
518 sas_rphy_show_protocol(field, name) \
519 static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
520 show_sas_rphy_##name, NULL)
523 show_sas_rphy_device_type(struct class_device *cdev, char *buf)
525 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
527 if (!rphy->identify.device_type)
528 return snprintf(buf, 20, "none\n");
529 return get_sas_device_type_names(
530 rphy->identify.device_type, buf);
533 static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
534 show_sas_rphy_device_type, NULL);
537 show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf)
539 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
540 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
541 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
542 struct sas_internal *i = to_sas_internal(shost->transportt);
547 * Only devices behind an expander are supported, because the
548 * enclosure identifier is a SMP feature.
550 if (phy->local_attached)
553 error = i->f->get_enclosure_identifier(rphy, &identifier);
556 return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
559 static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
560 show_sas_rphy_enclosure_identifier, NULL);
563 show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf)
565 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
566 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
567 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
568 struct sas_internal *i = to_sas_internal(shost->transportt);
571 if (phy->local_attached)
574 val = i->f->get_bay_identifier(rphy);
577 return sprintf(buf, "%d\n", val);
580 static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
581 show_sas_rphy_bay_identifier, NULL);
583 sas_rphy_protocol_attr(identify.initiator_port_protocols,
584 initiator_port_protocols);
585 sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
586 sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
588 sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
590 static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
591 "sas_rphy", NULL, NULL, NULL);
593 static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
595 struct Scsi_Host *shost;
596 struct sas_internal *i;
598 if (!scsi_is_sas_rphy(dev))
600 shost = dev_to_shost(dev->parent->parent);
602 if (!shost->transportt)
604 if (shost->transportt->host_attrs.ac.class !=
605 &sas_host_class.class)
608 i = to_sas_internal(shost->transportt);
609 return &i->rphy_attr_cont.ac == cont;
612 static void sas_rphy_release(struct device *dev)
614 struct sas_rphy *rphy = dev_to_rphy(dev);
616 put_device(dev->parent);
621 * sas_rphy_alloc -- allocates and initialize a SAS remote PHY structure
622 * @parent: SAS PHY this remote PHY is conneted to
624 * Allocates an SAS remote PHY structure, connected to @parent.
627 * SAS PHY allocated or %NULL if the allocation failed.
629 struct sas_rphy *sas_rphy_alloc(struct sas_phy *parent)
631 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
632 struct sas_rphy *rphy;
634 rphy = kzalloc(sizeof(*rphy), GFP_KERNEL);
636 put_device(&parent->dev);
640 device_initialize(&rphy->dev);
641 rphy->dev.parent = get_device(&parent->dev);
642 rphy->dev.release = sas_rphy_release;
643 sprintf(rphy->dev.bus_id, "rphy-%d:%d-%d",
644 shost->host_no, parent->port_identifier, parent->number);
645 transport_setup_device(&rphy->dev);
649 EXPORT_SYMBOL(sas_rphy_alloc);
652 * sas_rphy_add -- add a SAS remote PHY to the device hierachy
653 * @rphy: The remote PHY to be added
655 * Publishes a SAS remote PHY to the rest of the system.
657 int sas_rphy_add(struct sas_rphy *rphy)
659 struct sas_phy *parent = dev_to_phy(rphy->dev.parent);
660 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
661 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
662 struct sas_identify *identify = &rphy->identify;
669 error = device_add(&rphy->dev);
672 transport_add_device(&rphy->dev);
673 transport_configure_device(&rphy->dev);
675 mutex_lock(&sas_host->lock);
676 list_add_tail(&rphy->list, &sas_host->rphy_list);
677 if (identify->device_type == SAS_END_DEVICE &&
678 (identify->target_port_protocols &
679 (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
680 rphy->scsi_target_id = sas_host->next_target_id++;
682 rphy->scsi_target_id = -1;
683 mutex_unlock(&sas_host->lock);
685 if (rphy->scsi_target_id != -1) {
686 scsi_scan_target(&rphy->dev, parent->port_identifier,
687 rphy->scsi_target_id, ~0, 0);
692 EXPORT_SYMBOL(sas_rphy_add);
695 * sas_rphy_free -- free a SAS remote PHY
696 * @rphy SAS remote PHY to free
698 * Frees the specified SAS remote PHY.
701 * This function must only be called on a remote
702 * PHY that has not sucessfully been added using
705 void sas_rphy_free(struct sas_rphy *rphy)
707 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
708 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
710 mutex_lock(&sas_host->lock);
711 list_del(&rphy->list);
712 mutex_unlock(&sas_host->lock);
714 transport_destroy_device(&rphy->dev);
715 put_device(rphy->dev.parent);
716 put_device(rphy->dev.parent);
717 put_device(rphy->dev.parent);
720 EXPORT_SYMBOL(sas_rphy_free);
723 * sas_rphy_delete -- remove SAS remote PHY
724 * @rphy: SAS remote PHY to remove
726 * Removes the specified SAS remote PHY.
729 sas_rphy_delete(struct sas_rphy *rphy)
731 struct device *dev = &rphy->dev;
732 struct sas_phy *parent = dev_to_phy(dev->parent);
733 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
734 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
736 switch (rphy->identify.device_type) {
738 scsi_remove_target(dev);
740 case SAS_EDGE_EXPANDER_DEVICE:
741 case SAS_FANOUT_EXPANDER_DEVICE:
742 device_for_each_child(dev, NULL, do_sas_phy_delete);
748 transport_remove_device(dev);
750 transport_destroy_device(dev);
752 mutex_lock(&sas_host->lock);
753 list_del(&rphy->list);
754 mutex_unlock(&sas_host->lock);
758 put_device(&parent->dev);
760 EXPORT_SYMBOL(sas_rphy_delete);
763 * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY
764 * @dev: device to check
767 * %1 if the device represents a SAS remote PHY, %0 else
769 int scsi_is_sas_rphy(const struct device *dev)
771 return dev->release == sas_rphy_release;
773 EXPORT_SYMBOL(scsi_is_sas_rphy);
780 static int sas_user_scan(struct Scsi_Host *shost, uint channel,
783 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
784 struct sas_rphy *rphy;
786 mutex_lock(&sas_host->lock);
787 list_for_each_entry(rphy, &sas_host->rphy_list, list) {
788 struct sas_phy *parent = dev_to_phy(rphy->dev.parent);
790 if (rphy->scsi_target_id == -1)
793 if ((channel == SCAN_WILD_CARD || channel == parent->port_identifier) &&
794 (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
795 scsi_scan_target(&rphy->dev, parent->port_identifier,
796 rphy->scsi_target_id, lun, 1);
799 mutex_unlock(&sas_host->lock);
806 * Setup / Teardown code
809 #define SETUP_RPORT_ATTRIBUTE(field) \
810 i->private_rphy_attrs[count] = class_device_attr_##field; \
811 i->private_rphy_attrs[count].attr.mode = S_IRUGO; \
812 i->private_rphy_attrs[count].store = NULL; \
813 i->rphy_attrs[count] = &i->private_rphy_attrs[count]; \
816 #define SETUP_PORT_ATTRIBUTE(field) \
817 i->private_phy_attrs[count] = class_device_attr_##field; \
818 i->private_phy_attrs[count].attr.mode = S_IRUGO; \
819 i->private_phy_attrs[count].store = NULL; \
820 i->phy_attrs[count] = &i->private_phy_attrs[count]; \
823 #define SETUP_PORT_ATTRIBUTE_WRONLY(field) \
824 i->private_phy_attrs[count] = class_device_attr_##field; \
825 i->private_phy_attrs[count].attr.mode = S_IWUGO; \
826 i->private_phy_attrs[count].show = NULL; \
827 i->phy_attrs[count] = &i->private_phy_attrs[count]; \
832 * sas_attach_transport -- instantiate SAS transport template
833 * @ft: SAS transport class function template
835 struct scsi_transport_template *
836 sas_attach_transport(struct sas_function_template *ft)
838 struct sas_internal *i;
841 i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL);
845 i->t.user_scan = sas_user_scan;
847 i->t.host_attrs.ac.attrs = &i->host_attrs[0];
848 i->t.host_attrs.ac.class = &sas_host_class.class;
849 i->t.host_attrs.ac.match = sas_host_match;
850 transport_container_register(&i->t.host_attrs);
851 i->t.host_size = sizeof(struct sas_host_attrs);
853 i->phy_attr_cont.ac.class = &sas_phy_class.class;
854 i->phy_attr_cont.ac.attrs = &i->phy_attrs[0];
855 i->phy_attr_cont.ac.match = sas_phy_match;
856 transport_container_register(&i->phy_attr_cont);
858 i->rphy_attr_cont.ac.class = &sas_rphy_class.class;
859 i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0];
860 i->rphy_attr_cont.ac.match = sas_rphy_match;
861 transport_container_register(&i->rphy_attr_cont);
866 i->host_attrs[count] = NULL;
869 SETUP_PORT_ATTRIBUTE(initiator_port_protocols);
870 SETUP_PORT_ATTRIBUTE(target_port_protocols);
871 SETUP_PORT_ATTRIBUTE(device_type);
872 SETUP_PORT_ATTRIBUTE(sas_address);
873 SETUP_PORT_ATTRIBUTE(phy_identifier);
874 SETUP_PORT_ATTRIBUTE(port_identifier);
875 SETUP_PORT_ATTRIBUTE(negotiated_linkrate);
876 SETUP_PORT_ATTRIBUTE(minimum_linkrate_hw);
877 SETUP_PORT_ATTRIBUTE(minimum_linkrate);
878 SETUP_PORT_ATTRIBUTE(maximum_linkrate_hw);
879 SETUP_PORT_ATTRIBUTE(maximum_linkrate);
881 SETUP_PORT_ATTRIBUTE(invalid_dword_count);
882 SETUP_PORT_ATTRIBUTE(running_disparity_error_count);
883 SETUP_PORT_ATTRIBUTE(loss_of_dword_sync_count);
884 SETUP_PORT_ATTRIBUTE(phy_reset_problem_count);
885 SETUP_PORT_ATTRIBUTE_WRONLY(link_reset);
886 SETUP_PORT_ATTRIBUTE_WRONLY(hard_reset);
887 i->phy_attrs[count] = NULL;
890 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols);
891 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols);
892 SETUP_RPORT_ATTRIBUTE(rphy_device_type);
893 SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
894 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
895 SETUP_RPORT_ATTRIBUTE(rphy_enclosure_identifier);
896 SETUP_RPORT_ATTRIBUTE(rphy_bay_identifier);
897 i->rphy_attrs[count] = NULL;
901 EXPORT_SYMBOL(sas_attach_transport);
904 * sas_release_transport -- release SAS transport template instance
905 * @t: transport template instance
907 void sas_release_transport(struct scsi_transport_template *t)
909 struct sas_internal *i = to_sas_internal(t);
911 transport_container_unregister(&i->t.host_attrs);
912 transport_container_unregister(&i->phy_attr_cont);
913 transport_container_unregister(&i->rphy_attr_cont);
917 EXPORT_SYMBOL(sas_release_transport);
919 static __init int sas_transport_init(void)
923 error = transport_class_register(&sas_host_class);
926 error = transport_class_register(&sas_phy_class);
928 goto out_unregister_transport;
929 error = transport_class_register(&sas_rphy_class);
931 goto out_unregister_phy;
936 transport_class_unregister(&sas_phy_class);
937 out_unregister_transport:
938 transport_class_unregister(&sas_host_class);
944 static void __exit sas_transport_exit(void)
946 transport_class_unregister(&sas_host_class);
947 transport_class_unregister(&sas_phy_class);
948 transport_class_unregister(&sas_rphy_class);
951 MODULE_AUTHOR("Christoph Hellwig");
952 MODULE_DESCRIPTION("SAS Transphy Attributes");
953 MODULE_LICENSE("GPL");
955 module_init(sas_transport_init);
956 module_exit(sas_transport_exit);