/* * Copyright (C) 2005 Dell Inc. * Released under GPL v2. * * Serial Attached SCSI (SAS) transport class. * * The SAS transport class contains common code to deal with SAS HBAs, * an aproximated representation of SAS topologies in the driver model, * and various sysfs attributes to expose these topologies and managment * interfaces to userspace. * * In addition to the basic SCSI core objects this transport class * introduces two additional intermediate objects: The SAS PHY * as represented by struct sas_phy defines an "outgoing" PHY on * a SAS HBA or Expander, and the SAS remote PHY represented by * struct sas_rphy defines an "incoming" PHY on a SAS Expander or * end device. Note that this is purely a software concept, the * underlying hardware for a PHY and a remote PHY is the exactly * the same. * * There is no concept of a SAS port in this code, users can see * what PHYs form a wide port based on the port_identifier attribute, * which is the same for all PHYs in a port. */ #include <linux/init.h> #include <linux/module.h> #include <linux/err.h> #include <linux/slab.h> #include <linux/string.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include <scsi/scsi_transport.h> #include <scsi/scsi_transport_sas.h> #define SAS_HOST_ATTRS 0 #define SAS_PORT_ATTRS 17 #define SAS_RPORT_ATTRS 5 struct sas_internal { struct scsi_transport_template t; struct sas_function_template *f; struct class_device_attribute private_host_attrs[SAS_HOST_ATTRS]; struct class_device_attribute private_phy_attrs[SAS_PORT_ATTRS]; struct class_device_attribute private_rphy_attrs[SAS_RPORT_ATTRS]; struct transport_container phy_attr_cont; struct transport_container rphy_attr_cont; /* * The array of null terminated pointers to attributes * needed by scsi_sysfs.c */ struct class_device_attribute *host_attrs[SAS_HOST_ATTRS + 1]; struct class_device_attribute *phy_attrs[SAS_PORT_ATTRS + 1]; struct class_device_attribute *rphy_attrs[SAS_RPORT_ATTRS + 1]; }; #define to_sas_internal(tmpl) container_of(tmpl, struct sas_internal, t) struct sas_host_attrs { struct list_head rphy_list; spinlock_t lock; u32 next_target_id; }; #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) /* * Hack to allow attributes of the same name in different objects. */ #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ struct class_device_attribute class_device_attr_##_prefix##_##_name = \ __ATTR(_name,_mode,_show,_store) /* * Pretty printing helpers */ #define sas_bitfield_name_match(title, table) \ static ssize_t \ get_sas_##title##_names(u32 table_key, char *buf) \ { \ char *prefix = ""; \ ssize_t len = 0; \ int i; \ \ for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \ if (table[i].value & table_key) { \ len += sprintf(buf + len, "%s%s", \ prefix, table[i].name); \ prefix = ", "; \ } \ } \ len += sprintf(buf + len, "\n"); \ return len; \ } #define sas_bitfield_name_search(title, table) \ static ssize_t \ get_sas_##title##_names(u32 table_key, char *buf) \ { \ ssize_t len = 0; \ int i; \ \ for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \ if (table[i].value == table_key) { \ len += sprintf(buf + len, "%s", \ table[i].name); \ break; \ } \ } \ len += sprintf(buf + len, "\n"); \ return len; \ } static struct { u32 value; char *name; } sas_device_type_names[] = { { SAS_PHY_UNUSED, "unused" }, { SAS_END_DEVICE, "end device" }, { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, }; sas_bitfield_name_search(device_type, sas_device_type_names) static struct { u32 value; char *name; } sas_protocol_names[] = { { SAS_PROTOCOL_SATA, "sata" }, { SAS_PROTOCOL_SMP, "smp" }, { SAS_PROTOCOL_STP, "stp" }, { SAS_PROTOCOL_SSP, "ssp" }, }; sas_bitfield_name_match(protocol, sas_protocol_names) static struct { u32 value; char *name; } sas_linkspeed_names[] = { { SAS_LINK_RATE_UNKNOWN, "Unknown" }, { SAS_PHY_DISABLED, "Phy disabled" }, { SAS_LINK_RATE_FAILED, "Link Rate failed" }, { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, }; sas_bitfield_name_search(linkspeed, sas_linkspeed_names) /* * SAS host attributes */ static int sas_host_setup(struct transport_container *tc, struct device *dev, struct class_device *cdev) { struct Scsi_Host *shost = dev_to_shost(dev); struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); INIT_LIST_HEAD(&sas_host->rphy_list); spin_lock_init(&sas_host->lock); sas_host->next_target_id = 0; return 0; } static DECLARE_TRANSPORT_CLASS(sas_host_class, "sas_host", sas_host_setup, NULL, NULL); static int sas_host_match(struct attribute_container *cont, struct device *dev) { struct Scsi_Host *shost; struct sas_internal *i; if (!scsi_is_host_device(dev)) return 0; shost = dev_to_shost(dev); if (!shost->transportt) return 0; if (shost->transportt->host_attrs.ac.class != &sas_host_class.class) return 0; i = to_sas_internal(shost->transportt); return &i->t.host_attrs.ac == cont; } static int do_sas_phy_delete(struct device *dev, void *data) { if (scsi_is_sas_phy(dev)) sas_phy_delete(dev_to_phy(dev)); return 0; } /** * sas_remove_host -- tear down a Scsi_Host's SAS data structures * @shost: Scsi Host that is torn down * * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. * Must be called just before scsi_remove_host for SAS HBAs. */ void sas_remove_host(struct Scsi_Host *shost) { device_for_each_child(&shost->shost_gendev, NULL, do_sas_phy_delete); } EXPORT_SYMBOL(sas_remove_host); /* * SAS Port attributes */ #define sas_phy_show_simple(field, name, format_string, cast) \ static ssize_t \ show_sas_phy_##name(struct class_device *cdev, char *buf) \ { \ struct sas_phy *phy = transport_class_to_phy(cdev); \ \ return snprintf(buf, 20, format_string, cast phy->field); \ } #define sas_phy_simple_attr(field, name, format_string, type) \ sas_phy_show_simple(field, name, format_string, (type)) \ static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) #define sas_phy_show_protocol(field, name) \ static ssize_t \ show_sas_phy_##name(struct class_device *cdev, char *buf) \ { \ struct sas_phy *phy = transport_class_to_phy(cdev); \ \ if (!phy->field) \ return snprintf(buf, 20, "none\n"); \ return get_sas_protocol_names(phy->field, buf); \ } #define sas_phy_protocol_attr(field, name) \ sas_phy_show_protocol(field, name) \ static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) #define sas_phy_show_linkspeed(field) \ static ssize_t \ show_sas_phy_##field(struct class_device *cdev, char *buf) \ { \ struct sas_phy *phy = transport_class_to_phy(cdev); \ \ return get_sas_linkspeed_names(phy->field, buf); \ } #define sas_phy_linkspeed_attr(field) \ sas_phy_show_linkspeed(field) \ static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) #define sas_phy_show_linkerror(field) \ static ssize_t \ show_sas_phy_##field(struct class_device *cdev, char *buf) \ { \ struct sas_phy *phy = transport_class_to_phy(cdev); \ struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ struct sas_internal *i = to_sas_internal(shost->transportt); \ int error; \ \ if (!phy->local_attached) \ return -EINVAL; \ \ error = i->f->get_linkerrors(phy); \ if (error) \ return error; \ return snprintf(buf, 20, "%u\n", phy->field); \ } #define sas_phy_linkerror_attr(field) \ sas_phy_show_linkerror(field) \ static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) static ssize_t show_sas_device_type(struct class_device *cdev, char *buf) { struct sas_phy *phy = transport_class_to_phy(cdev); if (!phy->identify.device_type) return snprintf(buf, 20, "none\n"); return get_sas_device_type_names(phy->identify.device_type, buf); } static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); static ssize_t do_sas_phy_reset(struct class_device *cdev, size_t count, int hard_reset) { struct sas_phy *phy = transport_class_to_phy(cdev); struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); struct sas_internal *i = to_sas_internal(shost->transportt); int error; if (!phy->local_attached) return -EINVAL; error = i->f->phy_reset(phy, hard_reset); if (error) return error; return count; }; static ssize_t store_sas_link_reset(struct class_device *cdev, const char *buf, size_t count) { return do_sas_phy_reset(cdev, count, 0); } static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); static ssize_t store_sas_hard_reset(struct class_device *cdev, const char *buf, size_t count) { return do_sas_phy_reset(cdev, count, 1); } static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); sas_phy_protocol_attr(identify.initiator_port_protocols, initiator_port_protocols); sas_phy_protocol_attr(identify.target_port_protocols, target_port_protocols); sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", unsigned long long); sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", u8); sas_phy_linkspeed_attr(negotiated_linkrate); sas_phy_linkspeed_attr(minimum_linkrate_hw); sas_phy_linkspeed_attr(minimum_linkrate); sas_phy_linkspeed_attr(maximum_linkrate_hw); sas_phy_linkspeed_attr(maximum_linkrate); sas_phy_linkerror_attr(invalid_dword_count); sas_phy_linkerror_attr(running_disparity_error_count); sas_phy_linkerror_attr(loss_of_dword_sync_count); sas_phy_linkerror_attr(phy_reset_problem_count); static DECLARE_TRANSPORT_CLASS(sas_phy_class, "sas_phy", NULL, NULL, NULL); static int sas_phy_match(struct attribute_container *cont, struct device *dev) { struct Scsi_Host *shost; struct sas_internal *i; if (!scsi_is_sas_phy(dev)) return 0; shost = dev_to_shost(dev->parent); if (!shost->transportt) return 0; if (shost->transportt->host_attrs.ac.class != &sas_host_class.class) return 0; i = to_sas_internal(shost->transportt); return &i->phy_attr_cont.ac == cont; } static void sas_phy_release(struct device *dev) { struct sas_phy *phy = dev_to_phy(dev); put_device(dev->parent); kfree(phy); } /** * sas_phy_alloc -- allocates and initialize a SAS PHY structure * @parent: Parent device * @number: Port number * * Allocates an SAS PHY structure. It will be added in the device tree * below the device specified by @parent, which has to be either a Scsi_Host * or sas_rphy. * * Returns: * SAS PHY allocated or %NULL if the allocation failed. */ struct sas_phy *sas_phy_alloc(struct device *parent, int number) { struct Scsi_Host *shost = dev_to_shost(parent); struct sas_phy *phy; phy = kmalloc(sizeof(*phy), GFP_KERNEL); if (!phy) return NULL; memset(phy, 0, sizeof(*phy)); get_device(parent); phy->number = number; device_initialize(&phy->dev); phy->dev.parent = get_device(parent); phy->dev.release = sas_phy_release; sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number); transport_setup_device(&phy->dev); return phy; } EXPORT_SYMBOL(sas_phy_alloc); /** * sas_phy_add -- add a SAS PHY to the device hierachy * @phy: The PHY to be added * * Publishes a SAS PHY to the rest of the system. */ int sas_phy_add(struct sas_phy *phy) { int error; error = device_add(&phy->dev); if (!error) { transport_add_device(&phy->dev); transport_configure_device(&phy->dev); } return error; } EXPORT_SYMBOL(sas_phy_add); /** * sas_phy_free -- free a SAS PHY * @phy: SAS PHY to free * * Frees the specified SAS PHY. * * Note: * This function must only be called on a PHY that has not * sucessfully been added using sas_phy_add(). */ void sas_phy_free(struct sas_phy *phy) { transport_destroy_device(&phy->dev); put_device(phy->dev.parent); put_device(phy->dev.parent); put_device(phy->dev.parent); kfree(phy); } EXPORT_SYMBOL(sas_phy_free); /** * sas_phy_delete -- remove SAS PHY * @phy: SAS PHY to remove * * Removes the specified SAS PHY. If the SAS PHY has an * associated remote PHY it is removed before. */ void sas_phy_delete(struct sas_phy *phy) { struct device *dev = &phy->dev; if (phy->rphy) sas_rphy_delete(phy->rphy); transport_remove_device(dev); device_del(dev); transport_destroy_device(dev); put_device(dev->parent); } EXPORT_SYMBOL(sas_phy_delete); /** * scsi_is_sas_phy -- check if a struct device represents a SAS PHY * @dev: device to check * * Returns: * %1 if the device represents a SAS PHY, %0 else */ int scsi_is_sas_phy(const struct device *dev) { return dev->release == sas_phy_release; } EXPORT_SYMBOL(scsi_is_sas_phy); /* * SAS remote PHY attributes. */ #define sas_rphy_show_simple(field, name, format_string, cast) \ static ssize_t \ show_sas_rphy_##name(struct class_device *cdev, char *buf) \ { \ struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ \ return snprintf(buf, 20, format_string, cast rphy->field); \ } #define sas_rphy_simple_attr(field, name, format_string, type) \ sas_rphy_show_simple(field, name, format_string, (type)) \ static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ show_sas_rphy_##name, NULL) #define sas_rphy_show_protocol(field, name) \ static ssize_t \ show_sas_rphy_##name(struct class_device *cdev, char *buf) \ { \ struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ \ if (!rphy->field) \ return snprintf(buf, 20, "none\n"); \ return get_sas_protocol_names(rphy->field, buf); \ } #define sas_rphy_protocol_attr(field, name) \ sas_rphy_show_protocol(field, name) \ static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ show_sas_rphy_##name, NULL) static ssize_t show_sas_rphy_device_type(struct class_device *cdev, char *buf) { struct sas_rphy *rphy = transport_class_to_rphy(cdev); if (!rphy->identify.device_type) return snprintf(buf, 20, "none\n"); return get_sas_device_type_names( rphy->identify.device_type, buf); } static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO, show_sas_rphy_device_type, NULL); sas_rphy_protocol_attr(identify.initiator_port_protocols, initiator_port_protocols); sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", unsigned long long); sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); static DECLARE_TRANSPORT_CLASS(sas_rphy_class, "sas_rphy", NULL, NULL, NULL); static int sas_rphy_match(struct attribute_container *cont, struct device *dev) { struct Scsi_Host *shost; struct sas_internal *i; if (!scsi_is_sas_rphy(dev)) return 0; shost = dev_to_shost(dev->parent->parent); if (!shost->transportt) return 0; if (shost->transportt->host_attrs.ac.class != &sas_host_class.class) return 0; i = to_sas_internal(shost->transportt); return &i->rphy_attr_cont.ac == cont; } static void sas_rphy_release(struct device *dev) { struct sas_rphy *rphy = dev_to_rphy(dev); put_device(dev->parent); kfree(rphy); } /** * sas_rphy_alloc -- allocates and initialize a SAS remote PHY structure * @parent: SAS PHY this remote PHY is conneted to * * Allocates an SAS remote PHY structure, connected to @parent. * * Returns: * SAS PHY allocated or %NULL if the allocation failed. */ struct sas_rphy *sas_rphy_alloc(struct sas_phy *parent) { struct Scsi_Host *shost = dev_to_shost(&parent->dev); struct sas_rphy *rphy; rphy = kmalloc(sizeof(*rphy), GFP_KERNEL); if (!rphy) { put_device(&parent->dev); return NULL; } memset(rphy, 0, sizeof(*rphy)); device_initialize(&rphy->dev); rphy->dev.parent = get_device(&parent->dev); rphy->dev.release = sas_rphy_release; sprintf(rphy->dev.bus_id, "rphy-%d:%d", shost->host_no, parent->number); transport_setup_device(&rphy->dev); return rphy; } EXPORT_SYMBOL(sas_rphy_alloc); /** * sas_rphy_add -- add a SAS remote PHY to the device hierachy * @rphy: The remote PHY to be added * * Publishes a SAS remote PHY to the rest of the system. */ int sas_rphy_add(struct sas_rphy *rphy) { struct sas_phy *parent = dev_to_phy(rphy->dev.parent); struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); struct sas_identify *identify = &rphy->identify; int error; if (parent->rphy) return -ENXIO; parent->rphy = rphy; error = device_add(&rphy->dev); if (error) return error; transport_add_device(&rphy->dev); transport_configure_device(&rphy->dev); spin_lock(&sas_host->lock); list_add_tail(&rphy->list, &sas_host->rphy_list); if (identify->device_type == SAS_END_DEVICE && (identify->target_port_protocols & (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) rphy->scsi_target_id = sas_host->next_target_id++; else rphy->scsi_target_id = -1; spin_unlock(&sas_host->lock); if (rphy->scsi_target_id != -1) { scsi_scan_target(&rphy->dev, parent->number, rphy->scsi_target_id, ~0, 0); } return 0; } EXPORT_SYMBOL(sas_rphy_add); /** * sas_rphy_free -- free a SAS remote PHY * @rphy SAS remote PHY to free * * Frees the specified SAS remote PHY. * * Note: * This function must only be called on a remote * PHY that has not sucessfully been added using * sas_rphy_add(). */ void sas_rphy_free(struct sas_rphy *rphy) { struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); spin_lock(&sas_host->lock); list_del(&rphy->list); spin_unlock(&sas_host->lock); transport_destroy_device(&rphy->dev); put_device(rphy->dev.parent); put_device(rphy->dev.parent); put_device(rphy->dev.parent); kfree(rphy); } EXPORT_SYMBOL(sas_rphy_free); /** * sas_rphy_delete -- remove SAS remote PHY * @rphy: SAS remote PHY to remove * * Removes the specified SAS remote PHY. */ void sas_rphy_delete(struct sas_rphy *rphy) { struct device *dev = &rphy->dev; struct sas_phy *parent = dev_to_phy(dev->parent); struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); scsi_remove_target(dev); transport_remove_device(dev); device_del(dev); transport_destroy_device(dev); spin_lock(&sas_host->lock); list_del(&rphy->list); spin_unlock(&sas_host->lock); put_device(&parent->dev); } EXPORT_SYMBOL(sas_rphy_delete); /** * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY * @dev: device to check * * Returns: * %1 if the device represents a SAS remote PHY, %0 else */ int scsi_is_sas_rphy(const struct device *dev) { return dev->release == sas_rphy_release; } EXPORT_SYMBOL(scsi_is_sas_rphy); /* * SCSI scan helper */ static struct device *sas_target_parent(struct Scsi_Host *shost, int channel, uint id) { struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); struct sas_rphy *rphy; struct device *dev = NULL; spin_lock(&sas_host->lock); list_for_each_entry(rphy, &sas_host->rphy_list, list) { struct sas_phy *parent = dev_to_phy(rphy->dev.parent); if (parent->number == channel && rphy->scsi_target_id == id) dev = &rphy->dev; } spin_unlock(&sas_host->lock); return dev; } /* * Setup / Teardown code */ #define SETUP_RPORT_ATTRIBUTE(field) \ i->private_rphy_attrs[count] = class_device_attr_##field; \ i->private_rphy_attrs[count].attr.mode = S_IRUGO; \ i->private_rphy_attrs[count].store = NULL; \ i->rphy_attrs[count] = &i->private_rphy_attrs[count]; \ count++ #define SETUP_PORT_ATTRIBUTE(field) \ i->private_phy_attrs[count] = class_device_attr_##field; \ i->private_phy_attrs[count].attr.mode = S_IRUGO; \ i->private_phy_attrs[count].store = NULL; \ i->phy_attrs[count] = &i->private_phy_attrs[count]; \ count++ #define SETUP_PORT_ATTRIBUTE_WRONLY(field) \ i->private_phy_attrs[count] = class_device_attr_##field; \ i->private_phy_attrs[count].attr.mode = S_IWUGO; \ i->private_phy_attrs[count].show = NULL; \ i->phy_attrs[count] = &i->private_phy_attrs[count]; \ count++ /** * sas_attach_transport -- instantiate SAS transport template * @ft: SAS transport class function template */ struct scsi_transport_template * sas_attach_transport(struct sas_function_template *ft) { struct sas_internal *i; int count; i = kmalloc(sizeof(struct sas_internal), GFP_KERNEL); if (!i) return NULL; memset(i, 0, sizeof(struct sas_internal)); i->t.target_parent = sas_target_parent; i->t.host_attrs.ac.attrs = &i->host_attrs[0]; i->t.host_attrs.ac.class = &sas_host_class.class; i->t.host_attrs.ac.match = sas_host_match; transport_container_register(&i->t.host_attrs); i->t.host_size = sizeof(struct sas_host_attrs); i->phy_attr_cont.ac.class = &sas_phy_class.class; i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; i->phy_attr_cont.ac.match = sas_phy_match; transport_container_register(&i->phy_attr_cont); i->rphy_attr_cont.ac.class = &sas_rphy_class.class; i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; i->rphy_attr_cont.ac.match = sas_rphy_match; transport_container_register(&i->rphy_attr_cont); i->f = ft; count = 0; i->host_attrs[count] = NULL; count = 0; SETUP_PORT_ATTRIBUTE(initiator_port_protocols); SETUP_PORT_ATTRIBUTE(target_port_protocols); SETUP_PORT_ATTRIBUTE(device_type); SETUP_PORT_ATTRIBUTE(sas_address); SETUP_PORT_ATTRIBUTE(phy_identifier); SETUP_PORT_ATTRIBUTE(port_identifier); SETUP_PORT_ATTRIBUTE(negotiated_linkrate); SETUP_PORT_ATTRIBUTE(minimum_linkrate_hw); SETUP_PORT_ATTRIBUTE(minimum_linkrate); SETUP_PORT_ATTRIBUTE(maximum_linkrate_hw); SETUP_PORT_ATTRIBUTE(maximum_linkrate); SETUP_PORT_ATTRIBUTE(invalid_dword_count); SETUP_PORT_ATTRIBUTE(running_disparity_error_count); SETUP_PORT_ATTRIBUTE(loss_of_dword_sync_count); SETUP_PORT_ATTRIBUTE(phy_reset_problem_count); SETUP_PORT_ATTRIBUTE_WRONLY(link_reset); SETUP_PORT_ATTRIBUTE_WRONLY(hard_reset); i->phy_attrs[count] = NULL; count = 0; SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); SETUP_RPORT_ATTRIBUTE(rphy_device_type); SETUP_RPORT_ATTRIBUTE(rphy_sas_address); SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); i->rphy_attrs[count] = NULL; return &i->t; } EXPORT_SYMBOL(sas_attach_transport); /** * sas_release_transport -- release SAS transport template instance * @t: transport template instance */ void sas_release_transport(struct scsi_transport_template *t) { struct sas_internal *i = to_sas_internal(t); transport_container_unregister(&i->t.host_attrs); transport_container_unregister(&i->phy_attr_cont); transport_container_unregister(&i->rphy_attr_cont); kfree(i); } EXPORT_SYMBOL(sas_release_transport); static __init int sas_transport_init(void) { int error; error = transport_class_register(&sas_host_class); if (error) goto out; error = transport_class_register(&sas_phy_class); if (error) goto out_unregister_transport; error = transport_class_register(&sas_rphy_class); if (error) goto out_unregister_phy; return 0; out_unregister_phy: transport_class_unregister(&sas_phy_class); out_unregister_transport: transport_class_unregister(&sas_host_class); out: return error; } static void __exit sas_transport_exit(void) { transport_class_unregister(&sas_host_class); transport_class_unregister(&sas_phy_class); transport_class_unregister(&sas_rphy_class); } MODULE_AUTHOR("Christoph Hellwig"); MODULE_DESCRIPTION("SAS Transphy Attributes"); MODULE_LICENSE("GPL"); module_init(sas_transport_init); module_exit(sas_transport_exit);