1c7ebbbceSChristoph Hellwig /* 2a0125641SChristoph Hellwig * Copyright (C) 2005-2006 Dell Inc. 3c7ebbbceSChristoph Hellwig * Released under GPL v2. 4c7ebbbceSChristoph Hellwig * 5c7ebbbceSChristoph Hellwig * Serial Attached SCSI (SAS) transport class. 6c7ebbbceSChristoph Hellwig * 7c7ebbbceSChristoph Hellwig * The SAS transport class contains common code to deal with SAS HBAs, 8c7ebbbceSChristoph Hellwig * an aproximated representation of SAS topologies in the driver model, 9c7ebbbceSChristoph Hellwig * and various sysfs attributes to expose these topologies and managment 10c7ebbbceSChristoph Hellwig * interfaces to userspace. 11c7ebbbceSChristoph Hellwig * 12c7ebbbceSChristoph Hellwig * In addition to the basic SCSI core objects this transport class 13c7ebbbceSChristoph Hellwig * introduces two additional intermediate objects: The SAS PHY 14c7ebbbceSChristoph Hellwig * as represented by struct sas_phy defines an "outgoing" PHY on 15c7ebbbceSChristoph Hellwig * a SAS HBA or Expander, and the SAS remote PHY represented by 16c7ebbbceSChristoph Hellwig * struct sas_rphy defines an "incoming" PHY on a SAS Expander or 17c7ebbbceSChristoph Hellwig * end device. Note that this is purely a software concept, the 18c7ebbbceSChristoph Hellwig * underlying hardware for a PHY and a remote PHY is the exactly 19c7ebbbceSChristoph Hellwig * the same. 20c7ebbbceSChristoph Hellwig * 21c7ebbbceSChristoph Hellwig * There is no concept of a SAS port in this code, users can see 22c7ebbbceSChristoph Hellwig * what PHYs form a wide port based on the port_identifier attribute, 23c7ebbbceSChristoph Hellwig * which is the same for all PHYs in a port. 24c7ebbbceSChristoph Hellwig */ 25c7ebbbceSChristoph Hellwig 26c7ebbbceSChristoph Hellwig #include <linux/init.h> 27c7ebbbceSChristoph Hellwig #include <linux/module.h> 28f6a57033SAl Viro #include <linux/jiffies.h> 29c7ebbbceSChristoph Hellwig #include <linux/err.h> 308c65b4a6STim Schmielau #include <linux/slab.h> 318c65b4a6STim Schmielau #include <linux/string.h> 327aa68e80SFUJITA Tomonori #include <linux/blkdev.h> 337aa68e80SFUJITA Tomonori #include <linux/bsg.h> 34c7ebbbceSChristoph Hellwig 35e02f3f59SChristoph Hellwig #include <scsi/scsi.h> 36c7ebbbceSChristoph Hellwig #include <scsi/scsi_device.h> 37c7ebbbceSChristoph Hellwig #include <scsi/scsi_host.h> 38c7ebbbceSChristoph Hellwig #include <scsi/scsi_transport.h> 39c7ebbbceSChristoph Hellwig #include <scsi/scsi_transport_sas.h> 40c7ebbbceSChristoph Hellwig 41d6159c17SJames Bottomley #include "scsi_sas_internal.h" 42c7ebbbceSChristoph Hellwig struct sas_host_attrs { 43c7ebbbceSChristoph Hellwig struct list_head rphy_list; 44e02f3f59SChristoph Hellwig struct mutex lock; 45b6aff669SJames Bottomley struct request_queue *q; 46c7ebbbceSChristoph Hellwig u32 next_target_id; 4779cb1819SJames Bottomley u32 next_expander_id; 48c9fefeb2SJames Bottomley int next_port_id; 49c7ebbbceSChristoph Hellwig }; 50c7ebbbceSChristoph Hellwig #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) 51c7ebbbceSChristoph Hellwig 52c7ebbbceSChristoph Hellwig 53c7ebbbceSChristoph Hellwig /* 54c7ebbbceSChristoph Hellwig * Hack to allow attributes of the same name in different objects. 55c7ebbbceSChristoph Hellwig */ 56c7ebbbceSChristoph Hellwig #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ 57c7ebbbceSChristoph Hellwig struct class_device_attribute class_device_attr_##_prefix##_##_name = \ 58c7ebbbceSChristoph Hellwig __ATTR(_name,_mode,_show,_store) 59c7ebbbceSChristoph Hellwig 60c7ebbbceSChristoph Hellwig 61c7ebbbceSChristoph Hellwig /* 62c7ebbbceSChristoph Hellwig * Pretty printing helpers 63c7ebbbceSChristoph Hellwig */ 64c7ebbbceSChristoph Hellwig 65c7ebbbceSChristoph Hellwig #define sas_bitfield_name_match(title, table) \ 66c7ebbbceSChristoph Hellwig static ssize_t \ 67c7ebbbceSChristoph Hellwig get_sas_##title##_names(u32 table_key, char *buf) \ 68c7ebbbceSChristoph Hellwig { \ 69c7ebbbceSChristoph Hellwig char *prefix = ""; \ 70c7ebbbceSChristoph Hellwig ssize_t len = 0; \ 71c7ebbbceSChristoph Hellwig int i; \ 72c7ebbbceSChristoph Hellwig \ 736391a113STobias Klauser for (i = 0; i < ARRAY_SIZE(table); i++) { \ 74c7ebbbceSChristoph Hellwig if (table[i].value & table_key) { \ 75c7ebbbceSChristoph Hellwig len += sprintf(buf + len, "%s%s", \ 76c7ebbbceSChristoph Hellwig prefix, table[i].name); \ 77c7ebbbceSChristoph Hellwig prefix = ", "; \ 78c7ebbbceSChristoph Hellwig } \ 79c7ebbbceSChristoph Hellwig } \ 80c7ebbbceSChristoph Hellwig len += sprintf(buf + len, "\n"); \ 81c7ebbbceSChristoph Hellwig return len; \ 82c7ebbbceSChristoph Hellwig } 83c7ebbbceSChristoph Hellwig 84d24e1eebSJames Bottomley #define sas_bitfield_name_set(title, table) \ 85d24e1eebSJames Bottomley static ssize_t \ 86d24e1eebSJames Bottomley set_sas_##title##_names(u32 *table_key, const char *buf) \ 87d24e1eebSJames Bottomley { \ 88d24e1eebSJames Bottomley ssize_t len = 0; \ 89d24e1eebSJames Bottomley int i; \ 90d24e1eebSJames Bottomley \ 91d24e1eebSJames Bottomley for (i = 0; i < ARRAY_SIZE(table); i++) { \ 92d24e1eebSJames Bottomley len = strlen(table[i].name); \ 93d24e1eebSJames Bottomley if (strncmp(buf, table[i].name, len) == 0 && \ 94d24e1eebSJames Bottomley (buf[len] == '\n' || buf[len] == '\0')) { \ 95d24e1eebSJames Bottomley *table_key = table[i].value; \ 96d24e1eebSJames Bottomley return 0; \ 97d24e1eebSJames Bottomley } \ 98d24e1eebSJames Bottomley } \ 99d24e1eebSJames Bottomley return -EINVAL; \ 100d24e1eebSJames Bottomley } 101d24e1eebSJames Bottomley 102c7ebbbceSChristoph Hellwig #define sas_bitfield_name_search(title, table) \ 103c7ebbbceSChristoph Hellwig static ssize_t \ 104c7ebbbceSChristoph Hellwig get_sas_##title##_names(u32 table_key, char *buf) \ 105c7ebbbceSChristoph Hellwig { \ 106c7ebbbceSChristoph Hellwig ssize_t len = 0; \ 107c7ebbbceSChristoph Hellwig int i; \ 108c7ebbbceSChristoph Hellwig \ 1096391a113STobias Klauser for (i = 0; i < ARRAY_SIZE(table); i++) { \ 110c7ebbbceSChristoph Hellwig if (table[i].value == table_key) { \ 111c7ebbbceSChristoph Hellwig len += sprintf(buf + len, "%s", \ 112c7ebbbceSChristoph Hellwig table[i].name); \ 113c7ebbbceSChristoph Hellwig break; \ 114c7ebbbceSChristoph Hellwig } \ 115c7ebbbceSChristoph Hellwig } \ 116c7ebbbceSChristoph Hellwig len += sprintf(buf + len, "\n"); \ 117c7ebbbceSChristoph Hellwig return len; \ 118c7ebbbceSChristoph Hellwig } 119c7ebbbceSChristoph Hellwig 120c7ebbbceSChristoph Hellwig static struct { 121c7ebbbceSChristoph Hellwig u32 value; 122c7ebbbceSChristoph Hellwig char *name; 123c7ebbbceSChristoph Hellwig } sas_device_type_names[] = { 124c7ebbbceSChristoph Hellwig { SAS_PHY_UNUSED, "unused" }, 125c7ebbbceSChristoph Hellwig { SAS_END_DEVICE, "end device" }, 126c7ebbbceSChristoph Hellwig { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, 127c7ebbbceSChristoph Hellwig { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, 128c7ebbbceSChristoph Hellwig }; 129c7ebbbceSChristoph Hellwig sas_bitfield_name_search(device_type, sas_device_type_names) 130c7ebbbceSChristoph Hellwig 131c7ebbbceSChristoph Hellwig 132c7ebbbceSChristoph Hellwig static struct { 133c7ebbbceSChristoph Hellwig u32 value; 134c7ebbbceSChristoph Hellwig char *name; 135c7ebbbceSChristoph Hellwig } sas_protocol_names[] = { 136c7ebbbceSChristoph Hellwig { SAS_PROTOCOL_SATA, "sata" }, 137c7ebbbceSChristoph Hellwig { SAS_PROTOCOL_SMP, "smp" }, 138c7ebbbceSChristoph Hellwig { SAS_PROTOCOL_STP, "stp" }, 139c7ebbbceSChristoph Hellwig { SAS_PROTOCOL_SSP, "ssp" }, 140c7ebbbceSChristoph Hellwig }; 141c7ebbbceSChristoph Hellwig sas_bitfield_name_match(protocol, sas_protocol_names) 142c7ebbbceSChristoph Hellwig 143c7ebbbceSChristoph Hellwig static struct { 144c7ebbbceSChristoph Hellwig u32 value; 145c7ebbbceSChristoph Hellwig char *name; 146c7ebbbceSChristoph Hellwig } sas_linkspeed_names[] = { 147c7ebbbceSChristoph Hellwig { SAS_LINK_RATE_UNKNOWN, "Unknown" }, 148c7ebbbceSChristoph Hellwig { SAS_PHY_DISABLED, "Phy disabled" }, 149c7ebbbceSChristoph Hellwig { SAS_LINK_RATE_FAILED, "Link Rate failed" }, 150c7ebbbceSChristoph Hellwig { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, 151c7ebbbceSChristoph Hellwig { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, 152c7ebbbceSChristoph Hellwig { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, 1537e6dff62SJames Bottomley { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" }, 154c7ebbbceSChristoph Hellwig }; 155c7ebbbceSChristoph Hellwig sas_bitfield_name_search(linkspeed, sas_linkspeed_names) 156d24e1eebSJames Bottomley sas_bitfield_name_set(linkspeed, sas_linkspeed_names) 157c7ebbbceSChristoph Hellwig 1587aa68e80SFUJITA Tomonori static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost, 1597aa68e80SFUJITA Tomonori struct sas_rphy *rphy) 1607aa68e80SFUJITA Tomonori { 1617aa68e80SFUJITA Tomonori struct request *req; 1627aa68e80SFUJITA Tomonori int ret; 1637aa68e80SFUJITA Tomonori int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *); 1647aa68e80SFUJITA Tomonori 1657aa68e80SFUJITA Tomonori while (!blk_queue_plugged(q)) { 1667aa68e80SFUJITA Tomonori req = elv_next_request(q); 1677aa68e80SFUJITA Tomonori if (!req) 1687aa68e80SFUJITA Tomonori break; 1697aa68e80SFUJITA Tomonori 1707aa68e80SFUJITA Tomonori blkdev_dequeue_request(req); 1717aa68e80SFUJITA Tomonori 1727aa68e80SFUJITA Tomonori spin_unlock_irq(q->queue_lock); 1737aa68e80SFUJITA Tomonori 1747aa68e80SFUJITA Tomonori handler = to_sas_internal(shost->transportt)->f->smp_handler; 1757aa68e80SFUJITA Tomonori ret = handler(shost, rphy, req); 1762d507a01SJames Bottomley req->errors = ret; 1777aa68e80SFUJITA Tomonori 1787aa68e80SFUJITA Tomonori spin_lock_irq(q->queue_lock); 1797aa68e80SFUJITA Tomonori 1807aa68e80SFUJITA Tomonori req->end_io(req, ret); 1817aa68e80SFUJITA Tomonori } 1827aa68e80SFUJITA Tomonori } 1837aa68e80SFUJITA Tomonori 1847aa68e80SFUJITA Tomonori static void sas_host_smp_request(struct request_queue *q) 1857aa68e80SFUJITA Tomonori { 1867aa68e80SFUJITA Tomonori sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL); 1877aa68e80SFUJITA Tomonori } 1887aa68e80SFUJITA Tomonori 1897aa68e80SFUJITA Tomonori static void sas_non_host_smp_request(struct request_queue *q) 1907aa68e80SFUJITA Tomonori { 1917aa68e80SFUJITA Tomonori struct sas_rphy *rphy = q->queuedata; 1927aa68e80SFUJITA Tomonori sas_smp_request(q, rphy_to_shost(rphy), rphy); 1937aa68e80SFUJITA Tomonori } 1947aa68e80SFUJITA Tomonori 19539dca558SJames Bottomley static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy) 1967aa68e80SFUJITA Tomonori { 1977aa68e80SFUJITA Tomonori struct request_queue *q; 1987aa68e80SFUJITA Tomonori int error; 19939dca558SJames Bottomley struct device *dev; 20039dca558SJames Bottomley char namebuf[BUS_ID_SIZE]; 20139dca558SJames Bottomley const char *name; 2027aa68e80SFUJITA Tomonori 2037aa68e80SFUJITA Tomonori if (!to_sas_internal(shost->transportt)->f->smp_handler) { 2047aa68e80SFUJITA Tomonori printk("%s can't handle SMP requests\n", shost->hostt->name); 2057aa68e80SFUJITA Tomonori return 0; 2067aa68e80SFUJITA Tomonori } 2077aa68e80SFUJITA Tomonori 20839dca558SJames Bottomley if (rphy) { 2097aa68e80SFUJITA Tomonori q = blk_init_queue(sas_non_host_smp_request, NULL); 21039dca558SJames Bottomley dev = &rphy->dev; 21139dca558SJames Bottomley name = dev->bus_id; 21239dca558SJames Bottomley } else { 2137aa68e80SFUJITA Tomonori q = blk_init_queue(sas_host_smp_request, NULL); 21439dca558SJames Bottomley dev = &shost->shost_gendev; 21539dca558SJames Bottomley snprintf(namebuf, sizeof(namebuf), 21639dca558SJames Bottomley "sas_host%d", shost->host_no); 21739dca558SJames Bottomley name = namebuf; 21839dca558SJames Bottomley } 2197aa68e80SFUJITA Tomonori if (!q) 2207aa68e80SFUJITA Tomonori return -ENOMEM; 2217aa68e80SFUJITA Tomonori 22239dca558SJames Bottomley error = bsg_register_queue(q, dev, name); 2237aa68e80SFUJITA Tomonori if (error) { 2247aa68e80SFUJITA Tomonori blk_cleanup_queue(q); 2257aa68e80SFUJITA Tomonori return -ENOMEM; 2267aa68e80SFUJITA Tomonori } 2277aa68e80SFUJITA Tomonori 2287aa68e80SFUJITA Tomonori if (rphy) 229b6aff669SJames Bottomley rphy->q = q; 230b6aff669SJames Bottomley else 231b6aff669SJames Bottomley to_sas_host_attrs(shost)->q = q; 232b6aff669SJames Bottomley 233b6aff669SJames Bottomley if (rphy) 2347aa68e80SFUJITA Tomonori q->queuedata = rphy; 2357aa68e80SFUJITA Tomonori else 2367aa68e80SFUJITA Tomonori q->queuedata = shost; 2377aa68e80SFUJITA Tomonori 2387aa68e80SFUJITA Tomonori set_bit(QUEUE_FLAG_BIDI, &q->queue_flags); 2397aa68e80SFUJITA Tomonori 2407aa68e80SFUJITA Tomonori return 0; 2417aa68e80SFUJITA Tomonori } 2427aa68e80SFUJITA Tomonori 243b6aff669SJames Bottomley static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy) 244b6aff669SJames Bottomley { 245b6aff669SJames Bottomley struct request_queue *q; 246b6aff669SJames Bottomley 247b6aff669SJames Bottomley if (rphy) 248b6aff669SJames Bottomley q = rphy->q; 249b6aff669SJames Bottomley else 250b6aff669SJames Bottomley q = to_sas_host_attrs(shost)->q; 251b6aff669SJames Bottomley 252b6aff669SJames Bottomley if (!q) 253b6aff669SJames Bottomley return; 254b6aff669SJames Bottomley 255b6aff669SJames Bottomley bsg_unregister_queue(q); 256b6aff669SJames Bottomley blk_cleanup_queue(q); 257b6aff669SJames Bottomley } 258b6aff669SJames Bottomley 259c7ebbbceSChristoph Hellwig /* 260c7ebbbceSChristoph Hellwig * SAS host attributes 261c7ebbbceSChristoph Hellwig */ 262c7ebbbceSChristoph Hellwig 26337be6eebSJames Bottomley static int sas_host_setup(struct transport_container *tc, struct device *dev, 26437be6eebSJames Bottomley struct class_device *cdev) 265c7ebbbceSChristoph Hellwig { 266c7ebbbceSChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(dev); 267c7ebbbceSChristoph Hellwig struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 268c7ebbbceSChristoph Hellwig 269c7ebbbceSChristoph Hellwig INIT_LIST_HEAD(&sas_host->rphy_list); 270e02f3f59SChristoph Hellwig mutex_init(&sas_host->lock); 271c7ebbbceSChristoph Hellwig sas_host->next_target_id = 0; 27279cb1819SJames Bottomley sas_host->next_expander_id = 0; 273c9fefeb2SJames Bottomley sas_host->next_port_id = 0; 2747aa68e80SFUJITA Tomonori 27539dca558SJames Bottomley if (sas_bsg_initialize(shost, NULL)) 2767aa68e80SFUJITA Tomonori dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", 2777aa68e80SFUJITA Tomonori shost->host_no); 2787aa68e80SFUJITA Tomonori 279c7ebbbceSChristoph Hellwig return 0; 280c7ebbbceSChristoph Hellwig } 281c7ebbbceSChristoph Hellwig 282b6aff669SJames Bottomley static int sas_host_remove(struct transport_container *tc, struct device *dev, 283b6aff669SJames Bottomley struct class_device *cdev) 284b6aff669SJames Bottomley { 285b6aff669SJames Bottomley struct Scsi_Host *shost = dev_to_shost(dev); 286b6aff669SJames Bottomley 287b6aff669SJames Bottomley sas_bsg_remove(shost, NULL); 288b6aff669SJames Bottomley 289b6aff669SJames Bottomley return 0; 290b6aff669SJames Bottomley } 291b6aff669SJames Bottomley 292c7ebbbceSChristoph Hellwig static DECLARE_TRANSPORT_CLASS(sas_host_class, 293b6aff669SJames Bottomley "sas_host", sas_host_setup, sas_host_remove, NULL); 294c7ebbbceSChristoph Hellwig 295c7ebbbceSChristoph Hellwig static int sas_host_match(struct attribute_container *cont, 296c7ebbbceSChristoph Hellwig struct device *dev) 297c7ebbbceSChristoph Hellwig { 298c7ebbbceSChristoph Hellwig struct Scsi_Host *shost; 299c7ebbbceSChristoph Hellwig struct sas_internal *i; 300c7ebbbceSChristoph Hellwig 301c7ebbbceSChristoph Hellwig if (!scsi_is_host_device(dev)) 302c7ebbbceSChristoph Hellwig return 0; 303c7ebbbceSChristoph Hellwig shost = dev_to_shost(dev); 304c7ebbbceSChristoph Hellwig 305c7ebbbceSChristoph Hellwig if (!shost->transportt) 306c7ebbbceSChristoph Hellwig return 0; 307c7ebbbceSChristoph Hellwig if (shost->transportt->host_attrs.ac.class != 308c7ebbbceSChristoph Hellwig &sas_host_class.class) 309c7ebbbceSChristoph Hellwig return 0; 310c7ebbbceSChristoph Hellwig 311c7ebbbceSChristoph Hellwig i = to_sas_internal(shost->transportt); 312c7ebbbceSChristoph Hellwig return &i->t.host_attrs.ac == cont; 313c7ebbbceSChristoph Hellwig } 314c7ebbbceSChristoph Hellwig 315c7ebbbceSChristoph Hellwig static int do_sas_phy_delete(struct device *dev, void *data) 316c7ebbbceSChristoph Hellwig { 31765c92b09SJames Bottomley int pass = (int)(unsigned long)data; 31865c92b09SJames Bottomley 31965c92b09SJames Bottomley if (pass == 0 && scsi_is_sas_port(dev)) 32065c92b09SJames Bottomley sas_port_delete(dev_to_sas_port(dev)); 32165c92b09SJames Bottomley else if (pass == 1 && scsi_is_sas_phy(dev)) 322c7ebbbceSChristoph Hellwig sas_phy_delete(dev_to_phy(dev)); 323c7ebbbceSChristoph Hellwig return 0; 324c7ebbbceSChristoph Hellwig } 325c7ebbbceSChristoph Hellwig 326c7ebbbceSChristoph Hellwig /** 327eb44820cSRob Landley * sas_remove_children - tear down a devices SAS data structures 32865c92b09SJames Bottomley * @dev: device belonging to the sas object 32965c92b09SJames Bottomley * 33065c92b09SJames Bottomley * Removes all SAS PHYs and remote PHYs for a given object 33165c92b09SJames Bottomley */ 33265c92b09SJames Bottomley void sas_remove_children(struct device *dev) 33365c92b09SJames Bottomley { 33465c92b09SJames Bottomley device_for_each_child(dev, (void *)0, do_sas_phy_delete); 33565c92b09SJames Bottomley device_for_each_child(dev, (void *)1, do_sas_phy_delete); 33665c92b09SJames Bottomley } 33765c92b09SJames Bottomley EXPORT_SYMBOL(sas_remove_children); 33865c92b09SJames Bottomley 33965c92b09SJames Bottomley /** 340eb44820cSRob Landley * sas_remove_host - tear down a Scsi_Host's SAS data structures 341c7ebbbceSChristoph Hellwig * @shost: Scsi Host that is torn down 342c7ebbbceSChristoph Hellwig * 343c7ebbbceSChristoph Hellwig * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. 344c7ebbbceSChristoph Hellwig * Must be called just before scsi_remove_host for SAS HBAs. 345c7ebbbceSChristoph Hellwig */ 346c7ebbbceSChristoph Hellwig void sas_remove_host(struct Scsi_Host *shost) 347c7ebbbceSChristoph Hellwig { 34865c92b09SJames Bottomley sas_remove_children(&shost->shost_gendev); 349c7ebbbceSChristoph Hellwig } 350c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_remove_host); 351c7ebbbceSChristoph Hellwig 352c7ebbbceSChristoph Hellwig 353c7ebbbceSChristoph Hellwig /* 35465c92b09SJames Bottomley * SAS Phy attributes 355c7ebbbceSChristoph Hellwig */ 356c7ebbbceSChristoph Hellwig 357c7ebbbceSChristoph Hellwig #define sas_phy_show_simple(field, name, format_string, cast) \ 358c7ebbbceSChristoph Hellwig static ssize_t \ 359c7ebbbceSChristoph Hellwig show_sas_phy_##name(struct class_device *cdev, char *buf) \ 360c7ebbbceSChristoph Hellwig { \ 361c7ebbbceSChristoph Hellwig struct sas_phy *phy = transport_class_to_phy(cdev); \ 362c7ebbbceSChristoph Hellwig \ 363c7ebbbceSChristoph Hellwig return snprintf(buf, 20, format_string, cast phy->field); \ 364c7ebbbceSChristoph Hellwig } 365c7ebbbceSChristoph Hellwig 366c7ebbbceSChristoph Hellwig #define sas_phy_simple_attr(field, name, format_string, type) \ 367c7ebbbceSChristoph Hellwig sas_phy_show_simple(field, name, format_string, (type)) \ 368c7ebbbceSChristoph Hellwig static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) 369c7ebbbceSChristoph Hellwig 370c7ebbbceSChristoph Hellwig #define sas_phy_show_protocol(field, name) \ 371c7ebbbceSChristoph Hellwig static ssize_t \ 372c7ebbbceSChristoph Hellwig show_sas_phy_##name(struct class_device *cdev, char *buf) \ 373c7ebbbceSChristoph Hellwig { \ 374c7ebbbceSChristoph Hellwig struct sas_phy *phy = transport_class_to_phy(cdev); \ 375c7ebbbceSChristoph Hellwig \ 376c7ebbbceSChristoph Hellwig if (!phy->field) \ 377c7ebbbceSChristoph Hellwig return snprintf(buf, 20, "none\n"); \ 378c7ebbbceSChristoph Hellwig return get_sas_protocol_names(phy->field, buf); \ 379c7ebbbceSChristoph Hellwig } 380c7ebbbceSChristoph Hellwig 381c7ebbbceSChristoph Hellwig #define sas_phy_protocol_attr(field, name) \ 382c7ebbbceSChristoph Hellwig sas_phy_show_protocol(field, name) \ 383c7ebbbceSChristoph Hellwig static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) 384c7ebbbceSChristoph Hellwig 385c7ebbbceSChristoph Hellwig #define sas_phy_show_linkspeed(field) \ 386c7ebbbceSChristoph Hellwig static ssize_t \ 387c7ebbbceSChristoph Hellwig show_sas_phy_##field(struct class_device *cdev, char *buf) \ 388c7ebbbceSChristoph Hellwig { \ 389c7ebbbceSChristoph Hellwig struct sas_phy *phy = transport_class_to_phy(cdev); \ 390c7ebbbceSChristoph Hellwig \ 391c7ebbbceSChristoph Hellwig return get_sas_linkspeed_names(phy->field, buf); \ 392c7ebbbceSChristoph Hellwig } 393c7ebbbceSChristoph Hellwig 394d24e1eebSJames Bottomley /* Fudge to tell if we're minimum or maximum */ 395d24e1eebSJames Bottomley #define sas_phy_store_linkspeed(field) \ 396d24e1eebSJames Bottomley static ssize_t \ 397d24e1eebSJames Bottomley store_sas_phy_##field(struct class_device *cdev, const char *buf, \ 398d24e1eebSJames Bottomley size_t count) \ 399d24e1eebSJames Bottomley { \ 400d24e1eebSJames Bottomley struct sas_phy *phy = transport_class_to_phy(cdev); \ 401d24e1eebSJames Bottomley struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ 402d24e1eebSJames Bottomley struct sas_internal *i = to_sas_internal(shost->transportt); \ 403d24e1eebSJames Bottomley u32 value; \ 404d24e1eebSJames Bottomley struct sas_phy_linkrates rates = {0}; \ 405d24e1eebSJames Bottomley int error; \ 406d24e1eebSJames Bottomley \ 407d24e1eebSJames Bottomley error = set_sas_linkspeed_names(&value, buf); \ 408d24e1eebSJames Bottomley if (error) \ 409d24e1eebSJames Bottomley return error; \ 410d24e1eebSJames Bottomley rates.field = value; \ 411d24e1eebSJames Bottomley error = i->f->set_phy_speed(phy, &rates); \ 412d24e1eebSJames Bottomley \ 413d24e1eebSJames Bottomley return error ? error : count; \ 414d24e1eebSJames Bottomley } 415d24e1eebSJames Bottomley 416d24e1eebSJames Bottomley #define sas_phy_linkspeed_rw_attr(field) \ 417d24e1eebSJames Bottomley sas_phy_show_linkspeed(field) \ 418d24e1eebSJames Bottomley sas_phy_store_linkspeed(field) \ 419d24e1eebSJames Bottomley static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ 420d24e1eebSJames Bottomley store_sas_phy_##field) 421d24e1eebSJames Bottomley 422c7ebbbceSChristoph Hellwig #define sas_phy_linkspeed_attr(field) \ 423c7ebbbceSChristoph Hellwig sas_phy_show_linkspeed(field) \ 424c7ebbbceSChristoph Hellwig static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) 425c7ebbbceSChristoph Hellwig 426d24e1eebSJames Bottomley 427c3ee74c4SChristoph Hellwig #define sas_phy_show_linkerror(field) \ 428c3ee74c4SChristoph Hellwig static ssize_t \ 429c3ee74c4SChristoph Hellwig show_sas_phy_##field(struct class_device *cdev, char *buf) \ 430c3ee74c4SChristoph Hellwig { \ 431c3ee74c4SChristoph Hellwig struct sas_phy *phy = transport_class_to_phy(cdev); \ 432c3ee74c4SChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ 433c3ee74c4SChristoph Hellwig struct sas_internal *i = to_sas_internal(shost->transportt); \ 434c3ee74c4SChristoph Hellwig int error; \ 435c3ee74c4SChristoph Hellwig \ 436dd9fbb52SJames Bottomley error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ 437c3ee74c4SChristoph Hellwig if (error) \ 438c3ee74c4SChristoph Hellwig return error; \ 439c3ee74c4SChristoph Hellwig return snprintf(buf, 20, "%u\n", phy->field); \ 440c3ee74c4SChristoph Hellwig } 441c3ee74c4SChristoph Hellwig 442c3ee74c4SChristoph Hellwig #define sas_phy_linkerror_attr(field) \ 443c3ee74c4SChristoph Hellwig sas_phy_show_linkerror(field) \ 444c3ee74c4SChristoph Hellwig static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) 445c3ee74c4SChristoph Hellwig 446c3ee74c4SChristoph Hellwig 447c7ebbbceSChristoph Hellwig static ssize_t 448c7ebbbceSChristoph Hellwig show_sas_device_type(struct class_device *cdev, char *buf) 449c7ebbbceSChristoph Hellwig { 450c7ebbbceSChristoph Hellwig struct sas_phy *phy = transport_class_to_phy(cdev); 451c7ebbbceSChristoph Hellwig 452c7ebbbceSChristoph Hellwig if (!phy->identify.device_type) 453c7ebbbceSChristoph Hellwig return snprintf(buf, 20, "none\n"); 454c7ebbbceSChristoph Hellwig return get_sas_device_type_names(phy->identify.device_type, buf); 455c7ebbbceSChristoph Hellwig } 456c7ebbbceSChristoph Hellwig static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); 457c7ebbbceSChristoph Hellwig 458acbf167dSDarrick J. Wong static ssize_t do_sas_phy_enable(struct class_device *cdev, 459acbf167dSDarrick J. Wong size_t count, int enable) 460acbf167dSDarrick J. Wong { 461acbf167dSDarrick J. Wong struct sas_phy *phy = transport_class_to_phy(cdev); 462acbf167dSDarrick J. Wong struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 463acbf167dSDarrick J. Wong struct sas_internal *i = to_sas_internal(shost->transportt); 464acbf167dSDarrick J. Wong int error; 465acbf167dSDarrick J. Wong 466acbf167dSDarrick J. Wong error = i->f->phy_enable(phy, enable); 467acbf167dSDarrick J. Wong if (error) 468acbf167dSDarrick J. Wong return error; 469acbf167dSDarrick J. Wong phy->enabled = enable; 470acbf167dSDarrick J. Wong return count; 471acbf167dSDarrick J. Wong }; 472acbf167dSDarrick J. Wong 473acbf167dSDarrick J. Wong static ssize_t store_sas_phy_enable(struct class_device *cdev, 474acbf167dSDarrick J. Wong const char *buf, size_t count) 475acbf167dSDarrick J. Wong { 476acbf167dSDarrick J. Wong if (count < 1) 477acbf167dSDarrick J. Wong return -EINVAL; 478acbf167dSDarrick J. Wong 479acbf167dSDarrick J. Wong switch (buf[0]) { 480acbf167dSDarrick J. Wong case '0': 481acbf167dSDarrick J. Wong do_sas_phy_enable(cdev, count, 0); 482acbf167dSDarrick J. Wong break; 483acbf167dSDarrick J. Wong case '1': 484acbf167dSDarrick J. Wong do_sas_phy_enable(cdev, count, 1); 485acbf167dSDarrick J. Wong break; 486acbf167dSDarrick J. Wong default: 487acbf167dSDarrick J. Wong return -EINVAL; 488acbf167dSDarrick J. Wong } 489acbf167dSDarrick J. Wong 490acbf167dSDarrick J. Wong return count; 491acbf167dSDarrick J. Wong } 492acbf167dSDarrick J. Wong 493acbf167dSDarrick J. Wong static ssize_t show_sas_phy_enable(struct class_device *cdev, char *buf) 494acbf167dSDarrick J. Wong { 495acbf167dSDarrick J. Wong struct sas_phy *phy = transport_class_to_phy(cdev); 496acbf167dSDarrick J. Wong 497acbf167dSDarrick J. Wong return snprintf(buf, 20, "%d", phy->enabled); 498acbf167dSDarrick J. Wong } 499acbf167dSDarrick J. Wong 500acbf167dSDarrick J. Wong static CLASS_DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, 501acbf167dSDarrick J. Wong store_sas_phy_enable); 502acbf167dSDarrick J. Wong 50307ba3a95SChristoph Hellwig static ssize_t do_sas_phy_reset(struct class_device *cdev, 50407ba3a95SChristoph Hellwig size_t count, int hard_reset) 50507ba3a95SChristoph Hellwig { 50607ba3a95SChristoph Hellwig struct sas_phy *phy = transport_class_to_phy(cdev); 50707ba3a95SChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 50807ba3a95SChristoph Hellwig struct sas_internal *i = to_sas_internal(shost->transportt); 50907ba3a95SChristoph Hellwig int error; 51007ba3a95SChristoph Hellwig 51107ba3a95SChristoph Hellwig error = i->f->phy_reset(phy, hard_reset); 51207ba3a95SChristoph Hellwig if (error) 51307ba3a95SChristoph Hellwig return error; 51407ba3a95SChristoph Hellwig return count; 51507ba3a95SChristoph Hellwig }; 51607ba3a95SChristoph Hellwig 51707ba3a95SChristoph Hellwig static ssize_t store_sas_link_reset(struct class_device *cdev, 51807ba3a95SChristoph Hellwig const char *buf, size_t count) 51907ba3a95SChristoph Hellwig { 52007ba3a95SChristoph Hellwig return do_sas_phy_reset(cdev, count, 0); 52107ba3a95SChristoph Hellwig } 52207ba3a95SChristoph Hellwig static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); 52307ba3a95SChristoph Hellwig 52407ba3a95SChristoph Hellwig static ssize_t store_sas_hard_reset(struct class_device *cdev, 52507ba3a95SChristoph Hellwig const char *buf, size_t count) 52607ba3a95SChristoph Hellwig { 52707ba3a95SChristoph Hellwig return do_sas_phy_reset(cdev, count, 1); 52807ba3a95SChristoph Hellwig } 52907ba3a95SChristoph Hellwig static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); 53007ba3a95SChristoph Hellwig 531c7ebbbceSChristoph Hellwig sas_phy_protocol_attr(identify.initiator_port_protocols, 532c7ebbbceSChristoph Hellwig initiator_port_protocols); 533c7ebbbceSChristoph Hellwig sas_phy_protocol_attr(identify.target_port_protocols, 534c7ebbbceSChristoph Hellwig target_port_protocols); 535c7ebbbceSChristoph Hellwig sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", 536c7ebbbceSChristoph Hellwig unsigned long long); 537c7ebbbceSChristoph Hellwig sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); 538c9fefeb2SJames Bottomley //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); 539c7ebbbceSChristoph Hellwig sas_phy_linkspeed_attr(negotiated_linkrate); 540c7ebbbceSChristoph Hellwig sas_phy_linkspeed_attr(minimum_linkrate_hw); 541d24e1eebSJames Bottomley sas_phy_linkspeed_rw_attr(minimum_linkrate); 542c7ebbbceSChristoph Hellwig sas_phy_linkspeed_attr(maximum_linkrate_hw); 543d24e1eebSJames Bottomley sas_phy_linkspeed_rw_attr(maximum_linkrate); 544c3ee74c4SChristoph Hellwig sas_phy_linkerror_attr(invalid_dword_count); 545c3ee74c4SChristoph Hellwig sas_phy_linkerror_attr(running_disparity_error_count); 546c3ee74c4SChristoph Hellwig sas_phy_linkerror_attr(loss_of_dword_sync_count); 547c3ee74c4SChristoph Hellwig sas_phy_linkerror_attr(phy_reset_problem_count); 548c7ebbbceSChristoph Hellwig 549c7ebbbceSChristoph Hellwig 550c7ebbbceSChristoph Hellwig static DECLARE_TRANSPORT_CLASS(sas_phy_class, 551c7ebbbceSChristoph Hellwig "sas_phy", NULL, NULL, NULL); 552c7ebbbceSChristoph Hellwig 553c7ebbbceSChristoph Hellwig static int sas_phy_match(struct attribute_container *cont, struct device *dev) 554c7ebbbceSChristoph Hellwig { 555c7ebbbceSChristoph Hellwig struct Scsi_Host *shost; 556c7ebbbceSChristoph Hellwig struct sas_internal *i; 557c7ebbbceSChristoph Hellwig 558c7ebbbceSChristoph Hellwig if (!scsi_is_sas_phy(dev)) 559c7ebbbceSChristoph Hellwig return 0; 560c7ebbbceSChristoph Hellwig shost = dev_to_shost(dev->parent); 561c7ebbbceSChristoph Hellwig 562c7ebbbceSChristoph Hellwig if (!shost->transportt) 563c7ebbbceSChristoph Hellwig return 0; 564c7ebbbceSChristoph Hellwig if (shost->transportt->host_attrs.ac.class != 565c7ebbbceSChristoph Hellwig &sas_host_class.class) 566c7ebbbceSChristoph Hellwig return 0; 567c7ebbbceSChristoph Hellwig 568c7ebbbceSChristoph Hellwig i = to_sas_internal(shost->transportt); 569c7ebbbceSChristoph Hellwig return &i->phy_attr_cont.ac == cont; 570c7ebbbceSChristoph Hellwig } 571c7ebbbceSChristoph Hellwig 572c7ebbbceSChristoph Hellwig static void sas_phy_release(struct device *dev) 573c7ebbbceSChristoph Hellwig { 574c7ebbbceSChristoph Hellwig struct sas_phy *phy = dev_to_phy(dev); 575c7ebbbceSChristoph Hellwig 576c7ebbbceSChristoph Hellwig put_device(dev->parent); 577c7ebbbceSChristoph Hellwig kfree(phy); 578c7ebbbceSChristoph Hellwig } 579c7ebbbceSChristoph Hellwig 580c7ebbbceSChristoph Hellwig /** 581eb44820cSRob Landley * sas_phy_alloc - allocates and initialize a SAS PHY structure 582c7ebbbceSChristoph Hellwig * @parent: Parent device 583d99ca418SMoore, Eric * @number: Phy index 584c7ebbbceSChristoph Hellwig * 585c7ebbbceSChristoph Hellwig * Allocates an SAS PHY structure. It will be added in the device tree 586c7ebbbceSChristoph Hellwig * below the device specified by @parent, which has to be either a Scsi_Host 587c7ebbbceSChristoph Hellwig * or sas_rphy. 588c7ebbbceSChristoph Hellwig * 589c7ebbbceSChristoph Hellwig * Returns: 590c7ebbbceSChristoph Hellwig * SAS PHY allocated or %NULL if the allocation failed. 591c7ebbbceSChristoph Hellwig */ 592c7ebbbceSChristoph Hellwig struct sas_phy *sas_phy_alloc(struct device *parent, int number) 593c7ebbbceSChristoph Hellwig { 594c7ebbbceSChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(parent); 595c7ebbbceSChristoph Hellwig struct sas_phy *phy; 596c7ebbbceSChristoph Hellwig 59724669f75SJes Sorensen phy = kzalloc(sizeof(*phy), GFP_KERNEL); 598c7ebbbceSChristoph Hellwig if (!phy) 599c7ebbbceSChristoph Hellwig return NULL; 600c7ebbbceSChristoph Hellwig 601c7ebbbceSChristoph Hellwig phy->number = number; 602acbf167dSDarrick J. Wong phy->enabled = 1; 603c7ebbbceSChristoph Hellwig 604c7ebbbceSChristoph Hellwig device_initialize(&phy->dev); 605c7ebbbceSChristoph Hellwig phy->dev.parent = get_device(parent); 606c7ebbbceSChristoph Hellwig phy->dev.release = sas_phy_release; 60765c92b09SJames Bottomley INIT_LIST_HEAD(&phy->port_siblings); 60879cb1819SJames Bottomley if (scsi_is_sas_expander_device(parent)) { 60979cb1819SJames Bottomley struct sas_rphy *rphy = dev_to_rphy(parent); 61065c92b09SJames Bottomley sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no, 61179cb1819SJames Bottomley rphy->scsi_target_id, number); 61279cb1819SJames Bottomley } else 613c7ebbbceSChristoph Hellwig sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number); 614c7ebbbceSChristoph Hellwig 615c7ebbbceSChristoph Hellwig transport_setup_device(&phy->dev); 616c7ebbbceSChristoph Hellwig 617c7ebbbceSChristoph Hellwig return phy; 618c7ebbbceSChristoph Hellwig } 619c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_phy_alloc); 620c7ebbbceSChristoph Hellwig 621c7ebbbceSChristoph Hellwig /** 622eb44820cSRob Landley * sas_phy_add - add a SAS PHY to the device hierarchy 623c7ebbbceSChristoph Hellwig * @phy: The PHY to be added 624c7ebbbceSChristoph Hellwig * 625c7ebbbceSChristoph Hellwig * Publishes a SAS PHY to the rest of the system. 626c7ebbbceSChristoph Hellwig */ 627c7ebbbceSChristoph Hellwig int sas_phy_add(struct sas_phy *phy) 628c7ebbbceSChristoph Hellwig { 629c7ebbbceSChristoph Hellwig int error; 630c7ebbbceSChristoph Hellwig 631c7ebbbceSChristoph Hellwig error = device_add(&phy->dev); 632c7ebbbceSChristoph Hellwig if (!error) { 633c7ebbbceSChristoph Hellwig transport_add_device(&phy->dev); 634c7ebbbceSChristoph Hellwig transport_configure_device(&phy->dev); 635c7ebbbceSChristoph Hellwig } 636c7ebbbceSChristoph Hellwig 637c7ebbbceSChristoph Hellwig return error; 638c7ebbbceSChristoph Hellwig } 639c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_phy_add); 640c7ebbbceSChristoph Hellwig 641c7ebbbceSChristoph Hellwig /** 642eb44820cSRob Landley * sas_phy_free - free a SAS PHY 643c7ebbbceSChristoph Hellwig * @phy: SAS PHY to free 644c7ebbbceSChristoph Hellwig * 645c7ebbbceSChristoph Hellwig * Frees the specified SAS PHY. 646c7ebbbceSChristoph Hellwig * 647c7ebbbceSChristoph Hellwig * Note: 648c7ebbbceSChristoph Hellwig * This function must only be called on a PHY that has not 649c7ebbbceSChristoph Hellwig * sucessfully been added using sas_phy_add(). 650c7ebbbceSChristoph Hellwig */ 651c7ebbbceSChristoph Hellwig void sas_phy_free(struct sas_phy *phy) 652c7ebbbceSChristoph Hellwig { 653c7ebbbceSChristoph Hellwig transport_destroy_device(&phy->dev); 65492aab646SMike Anderson put_device(&phy->dev); 655c7ebbbceSChristoph Hellwig } 656c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_phy_free); 657c7ebbbceSChristoph Hellwig 658c7ebbbceSChristoph Hellwig /** 659eb44820cSRob Landley * sas_phy_delete - remove SAS PHY 660c7ebbbceSChristoph Hellwig * @phy: SAS PHY to remove 661c7ebbbceSChristoph Hellwig * 662c7ebbbceSChristoph Hellwig * Removes the specified SAS PHY. If the SAS PHY has an 663c7ebbbceSChristoph Hellwig * associated remote PHY it is removed before. 664c7ebbbceSChristoph Hellwig */ 665c7ebbbceSChristoph Hellwig void 666c7ebbbceSChristoph Hellwig sas_phy_delete(struct sas_phy *phy) 667c7ebbbceSChristoph Hellwig { 668c7ebbbceSChristoph Hellwig struct device *dev = &phy->dev; 669c7ebbbceSChristoph Hellwig 67065c92b09SJames Bottomley /* this happens if the phy is still part of a port when deleted */ 67165c92b09SJames Bottomley BUG_ON(!list_empty(&phy->port_siblings)); 672c7ebbbceSChristoph Hellwig 673c7ebbbceSChristoph Hellwig transport_remove_device(dev); 674c7ebbbceSChristoph Hellwig device_del(dev); 675c7ebbbceSChristoph Hellwig transport_destroy_device(dev); 67692aab646SMike Anderson put_device(dev); 677c7ebbbceSChristoph Hellwig } 678c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_phy_delete); 679c7ebbbceSChristoph Hellwig 680c7ebbbceSChristoph Hellwig /** 681eb44820cSRob Landley * scsi_is_sas_phy - check if a struct device represents a SAS PHY 682c7ebbbceSChristoph Hellwig * @dev: device to check 683c7ebbbceSChristoph Hellwig * 684c7ebbbceSChristoph Hellwig * Returns: 685c7ebbbceSChristoph Hellwig * %1 if the device represents a SAS PHY, %0 else 686c7ebbbceSChristoph Hellwig */ 687c7ebbbceSChristoph Hellwig int scsi_is_sas_phy(const struct device *dev) 688c7ebbbceSChristoph Hellwig { 689c7ebbbceSChristoph Hellwig return dev->release == sas_phy_release; 690c7ebbbceSChristoph Hellwig } 691c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(scsi_is_sas_phy); 692c7ebbbceSChristoph Hellwig 693c7ebbbceSChristoph Hellwig /* 69465c92b09SJames Bottomley * SAS Port attributes 69565c92b09SJames Bottomley */ 69665c92b09SJames Bottomley #define sas_port_show_simple(field, name, format_string, cast) \ 69765c92b09SJames Bottomley static ssize_t \ 69865c92b09SJames Bottomley show_sas_port_##name(struct class_device *cdev, char *buf) \ 69965c92b09SJames Bottomley { \ 70065c92b09SJames Bottomley struct sas_port *port = transport_class_to_sas_port(cdev); \ 70165c92b09SJames Bottomley \ 70265c92b09SJames Bottomley return snprintf(buf, 20, format_string, cast port->field); \ 70365c92b09SJames Bottomley } 70465c92b09SJames Bottomley 70565c92b09SJames Bottomley #define sas_port_simple_attr(field, name, format_string, type) \ 70665c92b09SJames Bottomley sas_port_show_simple(field, name, format_string, (type)) \ 70765c92b09SJames Bottomley static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) 70865c92b09SJames Bottomley 70965c92b09SJames Bottomley sas_port_simple_attr(num_phys, num_phys, "%d\n", int); 71065c92b09SJames Bottomley 71165c92b09SJames Bottomley static DECLARE_TRANSPORT_CLASS(sas_port_class, 71265c92b09SJames Bottomley "sas_port", NULL, NULL, NULL); 71365c92b09SJames Bottomley 71465c92b09SJames Bottomley static int sas_port_match(struct attribute_container *cont, struct device *dev) 71565c92b09SJames Bottomley { 71665c92b09SJames Bottomley struct Scsi_Host *shost; 71765c92b09SJames Bottomley struct sas_internal *i; 71865c92b09SJames Bottomley 71965c92b09SJames Bottomley if (!scsi_is_sas_port(dev)) 72065c92b09SJames Bottomley return 0; 72165c92b09SJames Bottomley shost = dev_to_shost(dev->parent); 72265c92b09SJames Bottomley 72365c92b09SJames Bottomley if (!shost->transportt) 72465c92b09SJames Bottomley return 0; 72565c92b09SJames Bottomley if (shost->transportt->host_attrs.ac.class != 72665c92b09SJames Bottomley &sas_host_class.class) 72765c92b09SJames Bottomley return 0; 72865c92b09SJames Bottomley 72965c92b09SJames Bottomley i = to_sas_internal(shost->transportt); 73065c92b09SJames Bottomley return &i->port_attr_cont.ac == cont; 73165c92b09SJames Bottomley } 73265c92b09SJames Bottomley 73365c92b09SJames Bottomley 73465c92b09SJames Bottomley static void sas_port_release(struct device *dev) 73565c92b09SJames Bottomley { 73665c92b09SJames Bottomley struct sas_port *port = dev_to_sas_port(dev); 73765c92b09SJames Bottomley 73865c92b09SJames Bottomley BUG_ON(!list_empty(&port->phy_list)); 73965c92b09SJames Bottomley 74065c92b09SJames Bottomley put_device(dev->parent); 74165c92b09SJames Bottomley kfree(port); 74265c92b09SJames Bottomley } 74365c92b09SJames Bottomley 74465c92b09SJames Bottomley static void sas_port_create_link(struct sas_port *port, 74565c92b09SJames Bottomley struct sas_phy *phy) 74665c92b09SJames Bottomley { 74721434966SDarrick J. Wong int res; 74821434966SDarrick J. Wong 74921434966SDarrick J. Wong res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, 75021434966SDarrick J. Wong phy->dev.bus_id); 75121434966SDarrick J. Wong if (res) 75221434966SDarrick J. Wong goto err; 75321434966SDarrick J. Wong res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); 75421434966SDarrick J. Wong if (res) 75521434966SDarrick J. Wong goto err; 75621434966SDarrick J. Wong return; 75721434966SDarrick J. Wong err: 75821434966SDarrick J. Wong printk(KERN_ERR "%s: Cannot create port links, err=%d\n", 75921434966SDarrick J. Wong __FUNCTION__, res); 76065c92b09SJames Bottomley } 76165c92b09SJames Bottomley 76265c92b09SJames Bottomley static void sas_port_delete_link(struct sas_port *port, 76365c92b09SJames Bottomley struct sas_phy *phy) 76465c92b09SJames Bottomley { 76565c92b09SJames Bottomley sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id); 76665c92b09SJames Bottomley sysfs_remove_link(&phy->dev.kobj, "port"); 76765c92b09SJames Bottomley } 76865c92b09SJames Bottomley 76965c92b09SJames Bottomley /** sas_port_alloc - allocate and initialize a SAS port structure 77065c92b09SJames Bottomley * 77165c92b09SJames Bottomley * @parent: parent device 77265c92b09SJames Bottomley * @port_id: port number 77365c92b09SJames Bottomley * 77465c92b09SJames Bottomley * Allocates a SAS port structure. It will be added to the device tree 77565c92b09SJames Bottomley * below the device specified by @parent which must be either a Scsi_Host 77665c92b09SJames Bottomley * or a sas_expander_device. 77765c92b09SJames Bottomley * 77865c92b09SJames Bottomley * Returns %NULL on error 77965c92b09SJames Bottomley */ 78065c92b09SJames Bottomley struct sas_port *sas_port_alloc(struct device *parent, int port_id) 78165c92b09SJames Bottomley { 78265c92b09SJames Bottomley struct Scsi_Host *shost = dev_to_shost(parent); 78365c92b09SJames Bottomley struct sas_port *port; 78465c92b09SJames Bottomley 78565c92b09SJames Bottomley port = kzalloc(sizeof(*port), GFP_KERNEL); 78665c92b09SJames Bottomley if (!port) 78765c92b09SJames Bottomley return NULL; 78865c92b09SJames Bottomley 78965c92b09SJames Bottomley port->port_identifier = port_id; 79065c92b09SJames Bottomley 79165c92b09SJames Bottomley device_initialize(&port->dev); 79265c92b09SJames Bottomley 79365c92b09SJames Bottomley port->dev.parent = get_device(parent); 79465c92b09SJames Bottomley port->dev.release = sas_port_release; 79565c92b09SJames Bottomley 79665c92b09SJames Bottomley mutex_init(&port->phy_list_mutex); 79765c92b09SJames Bottomley INIT_LIST_HEAD(&port->phy_list); 79865c92b09SJames Bottomley 79965c92b09SJames Bottomley if (scsi_is_sas_expander_device(parent)) { 80065c92b09SJames Bottomley struct sas_rphy *rphy = dev_to_rphy(parent); 80165c92b09SJames Bottomley sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no, 80265c92b09SJames Bottomley rphy->scsi_target_id, port->port_identifier); 80365c92b09SJames Bottomley } else 80465c92b09SJames Bottomley sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no, 80565c92b09SJames Bottomley port->port_identifier); 80665c92b09SJames Bottomley 80765c92b09SJames Bottomley transport_setup_device(&port->dev); 80865c92b09SJames Bottomley 80965c92b09SJames Bottomley return port; 81065c92b09SJames Bottomley } 81165c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_alloc); 81265c92b09SJames Bottomley 813c9fefeb2SJames Bottomley /** sas_port_alloc_num - allocate and initialize a SAS port structure 814c9fefeb2SJames Bottomley * 815c9fefeb2SJames Bottomley * @parent: parent device 816c9fefeb2SJames Bottomley * 817c9fefeb2SJames Bottomley * Allocates a SAS port structure and a number to go with it. This 818c9fefeb2SJames Bottomley * interface is really for adapters where the port number has no 819c9fefeb2SJames Bottomley * meansing, so the sas class should manage them. It will be added to 820c9fefeb2SJames Bottomley * the device tree below the device specified by @parent which must be 821c9fefeb2SJames Bottomley * either a Scsi_Host or a sas_expander_device. 822c9fefeb2SJames Bottomley * 823c9fefeb2SJames Bottomley * Returns %NULL on error 824c9fefeb2SJames Bottomley */ 825c9fefeb2SJames Bottomley struct sas_port *sas_port_alloc_num(struct device *parent) 826c9fefeb2SJames Bottomley { 827c9fefeb2SJames Bottomley int index; 828c9fefeb2SJames Bottomley struct Scsi_Host *shost = dev_to_shost(parent); 829c9fefeb2SJames Bottomley struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 830c9fefeb2SJames Bottomley 831c9fefeb2SJames Bottomley /* FIXME: use idr for this eventually */ 832c9fefeb2SJames Bottomley mutex_lock(&sas_host->lock); 833c9fefeb2SJames Bottomley if (scsi_is_sas_expander_device(parent)) { 834c9fefeb2SJames Bottomley struct sas_rphy *rphy = dev_to_rphy(parent); 835c9fefeb2SJames Bottomley struct sas_expander_device *exp = rphy_to_expander_device(rphy); 836c9fefeb2SJames Bottomley 837c9fefeb2SJames Bottomley index = exp->next_port_id++; 838c9fefeb2SJames Bottomley } else 839c9fefeb2SJames Bottomley index = sas_host->next_port_id++; 840c9fefeb2SJames Bottomley mutex_unlock(&sas_host->lock); 841c9fefeb2SJames Bottomley return sas_port_alloc(parent, index); 842c9fefeb2SJames Bottomley } 843c9fefeb2SJames Bottomley EXPORT_SYMBOL(sas_port_alloc_num); 844c9fefeb2SJames Bottomley 84565c92b09SJames Bottomley /** 84665c92b09SJames Bottomley * sas_port_add - add a SAS port to the device hierarchy 84765c92b09SJames Bottomley * @port: port to be added 84865c92b09SJames Bottomley * 84965c92b09SJames Bottomley * publishes a port to the rest of the system 85065c92b09SJames Bottomley */ 85165c92b09SJames Bottomley int sas_port_add(struct sas_port *port) 85265c92b09SJames Bottomley { 85365c92b09SJames Bottomley int error; 85465c92b09SJames Bottomley 85565c92b09SJames Bottomley /* No phys should be added until this is made visible */ 85665c92b09SJames Bottomley BUG_ON(!list_empty(&port->phy_list)); 85765c92b09SJames Bottomley 85865c92b09SJames Bottomley error = device_add(&port->dev); 85965c92b09SJames Bottomley 86065c92b09SJames Bottomley if (error) 86165c92b09SJames Bottomley return error; 86265c92b09SJames Bottomley 86365c92b09SJames Bottomley transport_add_device(&port->dev); 86465c92b09SJames Bottomley transport_configure_device(&port->dev); 86565c92b09SJames Bottomley 86665c92b09SJames Bottomley return 0; 86765c92b09SJames Bottomley } 86865c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_add); 86965c92b09SJames Bottomley 87065c92b09SJames Bottomley /** 871eb44820cSRob Landley * sas_port_free - free a SAS PORT 87265c92b09SJames Bottomley * @port: SAS PORT to free 87365c92b09SJames Bottomley * 87465c92b09SJames Bottomley * Frees the specified SAS PORT. 87565c92b09SJames Bottomley * 87665c92b09SJames Bottomley * Note: 87765c92b09SJames Bottomley * This function must only be called on a PORT that has not 87865c92b09SJames Bottomley * sucessfully been added using sas_port_add(). 87965c92b09SJames Bottomley */ 88065c92b09SJames Bottomley void sas_port_free(struct sas_port *port) 88165c92b09SJames Bottomley { 88265c92b09SJames Bottomley transport_destroy_device(&port->dev); 88365c92b09SJames Bottomley put_device(&port->dev); 88465c92b09SJames Bottomley } 88565c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_free); 88665c92b09SJames Bottomley 88765c92b09SJames Bottomley /** 888eb44820cSRob Landley * sas_port_delete - remove SAS PORT 88965c92b09SJames Bottomley * @port: SAS PORT to remove 89065c92b09SJames Bottomley * 89165c92b09SJames Bottomley * Removes the specified SAS PORT. If the SAS PORT has an 89265c92b09SJames Bottomley * associated phys, unlink them from the port as well. 89365c92b09SJames Bottomley */ 89465c92b09SJames Bottomley void sas_port_delete(struct sas_port *port) 89565c92b09SJames Bottomley { 89665c92b09SJames Bottomley struct device *dev = &port->dev; 89765c92b09SJames Bottomley struct sas_phy *phy, *tmp_phy; 89865c92b09SJames Bottomley 89965c92b09SJames Bottomley if (port->rphy) { 90065c92b09SJames Bottomley sas_rphy_delete(port->rphy); 90165c92b09SJames Bottomley port->rphy = NULL; 90265c92b09SJames Bottomley } 90365c92b09SJames Bottomley 90465c92b09SJames Bottomley mutex_lock(&port->phy_list_mutex); 90565c92b09SJames Bottomley list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, 90665c92b09SJames Bottomley port_siblings) { 90765c92b09SJames Bottomley sas_port_delete_link(port, phy); 90865c92b09SJames Bottomley list_del_init(&phy->port_siblings); 90965c92b09SJames Bottomley } 91065c92b09SJames Bottomley mutex_unlock(&port->phy_list_mutex); 91165c92b09SJames Bottomley 912a0e1b6efSJames Bottomley if (port->is_backlink) { 913a0e1b6efSJames Bottomley struct device *parent = port->dev.parent; 914a0e1b6efSJames Bottomley 915a0e1b6efSJames Bottomley sysfs_remove_link(&port->dev.kobj, parent->bus_id); 916a0e1b6efSJames Bottomley port->is_backlink = 0; 917a0e1b6efSJames Bottomley } 918a0e1b6efSJames Bottomley 91965c92b09SJames Bottomley transport_remove_device(dev); 92065c92b09SJames Bottomley device_del(dev); 92165c92b09SJames Bottomley transport_destroy_device(dev); 92265c92b09SJames Bottomley put_device(dev); 92365c92b09SJames Bottomley } 92465c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_delete); 92565c92b09SJames Bottomley 92665c92b09SJames Bottomley /** 927eb44820cSRob Landley * scsi_is_sas_port - check if a struct device represents a SAS port 92865c92b09SJames Bottomley * @dev: device to check 92965c92b09SJames Bottomley * 93065c92b09SJames Bottomley * Returns: 93165c92b09SJames Bottomley * %1 if the device represents a SAS Port, %0 else 93265c92b09SJames Bottomley */ 93365c92b09SJames Bottomley int scsi_is_sas_port(const struct device *dev) 93465c92b09SJames Bottomley { 93565c92b09SJames Bottomley return dev->release == sas_port_release; 93665c92b09SJames Bottomley } 93765c92b09SJames Bottomley EXPORT_SYMBOL(scsi_is_sas_port); 93865c92b09SJames Bottomley 93965c92b09SJames Bottomley /** 94065c92b09SJames Bottomley * sas_port_add_phy - add another phy to a port to form a wide port 94165c92b09SJames Bottomley * @port: port to add the phy to 94265c92b09SJames Bottomley * @phy: phy to add 94365c92b09SJames Bottomley * 94465c92b09SJames Bottomley * When a port is initially created, it is empty (has no phys). All 94565c92b09SJames Bottomley * ports must have at least one phy to operated, and all wide ports 94665c92b09SJames Bottomley * must have at least two. The current code makes no difference 94765c92b09SJames Bottomley * between ports and wide ports, but the only object that can be 94865c92b09SJames Bottomley * connected to a remote device is a port, so ports must be formed on 94965c92b09SJames Bottomley * all devices with phys if they're connected to anything. 95065c92b09SJames Bottomley */ 95165c92b09SJames Bottomley void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) 95265c92b09SJames Bottomley { 95365c92b09SJames Bottomley mutex_lock(&port->phy_list_mutex); 95465c92b09SJames Bottomley if (unlikely(!list_empty(&phy->port_siblings))) { 95565c92b09SJames Bottomley /* make sure we're already on this port */ 95665c92b09SJames Bottomley struct sas_phy *tmp; 95765c92b09SJames Bottomley 95865c92b09SJames Bottomley list_for_each_entry(tmp, &port->phy_list, port_siblings) 95965c92b09SJames Bottomley if (tmp == phy) 96065c92b09SJames Bottomley break; 96165c92b09SJames Bottomley /* If this trips, you added a phy that was already 96265c92b09SJames Bottomley * part of a different port */ 96365c92b09SJames Bottomley if (unlikely(tmp != phy)) { 96465c92b09SJames Bottomley dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id); 96565c92b09SJames Bottomley BUG(); 96665c92b09SJames Bottomley } 96765c92b09SJames Bottomley } else { 96865c92b09SJames Bottomley sas_port_create_link(port, phy); 96965c92b09SJames Bottomley list_add_tail(&phy->port_siblings, &port->phy_list); 97065c92b09SJames Bottomley port->num_phys++; 97165c92b09SJames Bottomley } 97265c92b09SJames Bottomley mutex_unlock(&port->phy_list_mutex); 97365c92b09SJames Bottomley } 97465c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_add_phy); 97565c92b09SJames Bottomley 97665c92b09SJames Bottomley /** 97765c92b09SJames Bottomley * sas_port_delete_phy - remove a phy from a port or wide port 97865c92b09SJames Bottomley * @port: port to remove the phy from 97965c92b09SJames Bottomley * @phy: phy to remove 98065c92b09SJames Bottomley * 98165c92b09SJames Bottomley * This operation is used for tearing down ports again. It must be 98265c92b09SJames Bottomley * done to every port or wide port before calling sas_port_delete. 98365c92b09SJames Bottomley */ 98465c92b09SJames Bottomley void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) 98565c92b09SJames Bottomley { 98665c92b09SJames Bottomley mutex_lock(&port->phy_list_mutex); 98765c92b09SJames Bottomley sas_port_delete_link(port, phy); 98865c92b09SJames Bottomley list_del_init(&phy->port_siblings); 98965c92b09SJames Bottomley port->num_phys--; 99065c92b09SJames Bottomley mutex_unlock(&port->phy_list_mutex); 99165c92b09SJames Bottomley } 99265c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_delete_phy); 99365c92b09SJames Bottomley 994a0e1b6efSJames Bottomley void sas_port_mark_backlink(struct sas_port *port) 995a0e1b6efSJames Bottomley { 99621434966SDarrick J. Wong int res; 997a0e1b6efSJames Bottomley struct device *parent = port->dev.parent->parent->parent; 998a0e1b6efSJames Bottomley 999a0e1b6efSJames Bottomley if (port->is_backlink) 1000a0e1b6efSJames Bottomley return; 1001a0e1b6efSJames Bottomley port->is_backlink = 1; 100221434966SDarrick J. Wong res = sysfs_create_link(&port->dev.kobj, &parent->kobj, 1003a0e1b6efSJames Bottomley parent->bus_id); 100421434966SDarrick J. Wong if (res) 100521434966SDarrick J. Wong goto err; 100621434966SDarrick J. Wong return; 100721434966SDarrick J. Wong err: 100821434966SDarrick J. Wong printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", 100921434966SDarrick J. Wong __FUNCTION__, res); 1010a0e1b6efSJames Bottomley 1011a0e1b6efSJames Bottomley } 1012a0e1b6efSJames Bottomley EXPORT_SYMBOL(sas_port_mark_backlink); 1013a0e1b6efSJames Bottomley 101465c92b09SJames Bottomley /* 1015c7ebbbceSChristoph Hellwig * SAS remote PHY attributes. 1016c7ebbbceSChristoph Hellwig */ 1017c7ebbbceSChristoph Hellwig 1018c7ebbbceSChristoph Hellwig #define sas_rphy_show_simple(field, name, format_string, cast) \ 1019c7ebbbceSChristoph Hellwig static ssize_t \ 1020c7ebbbceSChristoph Hellwig show_sas_rphy_##name(struct class_device *cdev, char *buf) \ 1021c7ebbbceSChristoph Hellwig { \ 1022c7ebbbceSChristoph Hellwig struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ 1023c7ebbbceSChristoph Hellwig \ 1024c7ebbbceSChristoph Hellwig return snprintf(buf, 20, format_string, cast rphy->field); \ 1025c7ebbbceSChristoph Hellwig } 1026c7ebbbceSChristoph Hellwig 1027c7ebbbceSChristoph Hellwig #define sas_rphy_simple_attr(field, name, format_string, type) \ 1028c7ebbbceSChristoph Hellwig sas_rphy_show_simple(field, name, format_string, (type)) \ 1029c7ebbbceSChristoph Hellwig static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ 1030c7ebbbceSChristoph Hellwig show_sas_rphy_##name, NULL) 1031c7ebbbceSChristoph Hellwig 1032c7ebbbceSChristoph Hellwig #define sas_rphy_show_protocol(field, name) \ 1033c7ebbbceSChristoph Hellwig static ssize_t \ 1034c7ebbbceSChristoph Hellwig show_sas_rphy_##name(struct class_device *cdev, char *buf) \ 1035c7ebbbceSChristoph Hellwig { \ 1036c7ebbbceSChristoph Hellwig struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ 1037c7ebbbceSChristoph Hellwig \ 1038c7ebbbceSChristoph Hellwig if (!rphy->field) \ 1039c7ebbbceSChristoph Hellwig return snprintf(buf, 20, "none\n"); \ 1040c7ebbbceSChristoph Hellwig return get_sas_protocol_names(rphy->field, buf); \ 1041c7ebbbceSChristoph Hellwig } 1042c7ebbbceSChristoph Hellwig 1043c7ebbbceSChristoph Hellwig #define sas_rphy_protocol_attr(field, name) \ 1044c7ebbbceSChristoph Hellwig sas_rphy_show_protocol(field, name) \ 1045c7ebbbceSChristoph Hellwig static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ 1046c7ebbbceSChristoph Hellwig show_sas_rphy_##name, NULL) 1047c7ebbbceSChristoph Hellwig 1048c7ebbbceSChristoph Hellwig static ssize_t 1049c7ebbbceSChristoph Hellwig show_sas_rphy_device_type(struct class_device *cdev, char *buf) 1050c7ebbbceSChristoph Hellwig { 1051c7ebbbceSChristoph Hellwig struct sas_rphy *rphy = transport_class_to_rphy(cdev); 1052c7ebbbceSChristoph Hellwig 1053c7ebbbceSChristoph Hellwig if (!rphy->identify.device_type) 1054c7ebbbceSChristoph Hellwig return snprintf(buf, 20, "none\n"); 1055c7ebbbceSChristoph Hellwig return get_sas_device_type_names( 1056c7ebbbceSChristoph Hellwig rphy->identify.device_type, buf); 1057c7ebbbceSChristoph Hellwig } 1058c7ebbbceSChristoph Hellwig 1059c7ebbbceSChristoph Hellwig static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO, 1060c7ebbbceSChristoph Hellwig show_sas_rphy_device_type, NULL); 1061c7ebbbceSChristoph Hellwig 1062a0125641SChristoph Hellwig static ssize_t 1063a0125641SChristoph Hellwig show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf) 1064a0125641SChristoph Hellwig { 1065a0125641SChristoph Hellwig struct sas_rphy *rphy = transport_class_to_rphy(cdev); 1066a0125641SChristoph Hellwig struct sas_phy *phy = dev_to_phy(rphy->dev.parent); 1067a0125641SChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 1068a0125641SChristoph Hellwig struct sas_internal *i = to_sas_internal(shost->transportt); 1069a0125641SChristoph Hellwig u64 identifier; 1070a0125641SChristoph Hellwig int error; 1071a0125641SChristoph Hellwig 1072a0125641SChristoph Hellwig /* 1073a0125641SChristoph Hellwig * Only devices behind an expander are supported, because the 1074a0125641SChristoph Hellwig * enclosure identifier is a SMP feature. 1075a0125641SChristoph Hellwig */ 1076f4ad7b58SJames Bottomley if (scsi_is_sas_phy_local(phy)) 1077a0125641SChristoph Hellwig return -EINVAL; 1078a0125641SChristoph Hellwig 1079a0125641SChristoph Hellwig error = i->f->get_enclosure_identifier(rphy, &identifier); 1080a0125641SChristoph Hellwig if (error) 1081a0125641SChristoph Hellwig return error; 1082a0125641SChristoph Hellwig return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); 1083a0125641SChristoph Hellwig } 1084a0125641SChristoph Hellwig 1085a0125641SChristoph Hellwig static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, 1086a0125641SChristoph Hellwig show_sas_rphy_enclosure_identifier, NULL); 1087a0125641SChristoph Hellwig 1088a0125641SChristoph Hellwig static ssize_t 1089a0125641SChristoph Hellwig show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf) 1090a0125641SChristoph Hellwig { 1091a0125641SChristoph Hellwig struct sas_rphy *rphy = transport_class_to_rphy(cdev); 1092a0125641SChristoph Hellwig struct sas_phy *phy = dev_to_phy(rphy->dev.parent); 1093a0125641SChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 1094a0125641SChristoph Hellwig struct sas_internal *i = to_sas_internal(shost->transportt); 1095a0125641SChristoph Hellwig int val; 1096a0125641SChristoph Hellwig 1097f4ad7b58SJames Bottomley if (scsi_is_sas_phy_local(phy)) 1098a0125641SChristoph Hellwig return -EINVAL; 1099a0125641SChristoph Hellwig 1100a0125641SChristoph Hellwig val = i->f->get_bay_identifier(rphy); 1101a0125641SChristoph Hellwig if (val < 0) 1102a0125641SChristoph Hellwig return val; 1103a0125641SChristoph Hellwig return sprintf(buf, "%d\n", val); 1104a0125641SChristoph Hellwig } 1105a0125641SChristoph Hellwig 1106a0125641SChristoph Hellwig static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, 1107a0125641SChristoph Hellwig show_sas_rphy_bay_identifier, NULL); 1108a0125641SChristoph Hellwig 1109c7ebbbceSChristoph Hellwig sas_rphy_protocol_attr(identify.initiator_port_protocols, 1110c7ebbbceSChristoph Hellwig initiator_port_protocols); 1111c7ebbbceSChristoph Hellwig sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); 1112c7ebbbceSChristoph Hellwig sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", 1113c7ebbbceSChristoph Hellwig unsigned long long); 1114c7ebbbceSChristoph Hellwig sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); 1115c7ebbbceSChristoph Hellwig 111642ab0360SJames Bottomley /* only need 8 bytes of data plus header (4 or 8) */ 111742ab0360SJames Bottomley #define BUF_SIZE 64 111842ab0360SJames Bottomley 111942ab0360SJames Bottomley int sas_read_port_mode_page(struct scsi_device *sdev) 112042ab0360SJames Bottomley { 112142ab0360SJames Bottomley char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; 112242ab0360SJames Bottomley struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); 112342ab0360SJames Bottomley struct sas_end_device *rdev; 112442ab0360SJames Bottomley struct scsi_mode_data mode_data; 112542ab0360SJames Bottomley int res, error; 112642ab0360SJames Bottomley 112742ab0360SJames Bottomley BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); 112842ab0360SJames Bottomley 112942ab0360SJames Bottomley rdev = rphy_to_end_device(rphy); 113042ab0360SJames Bottomley 113142ab0360SJames Bottomley if (!buffer) 113242ab0360SJames Bottomley return -ENOMEM; 113342ab0360SJames Bottomley 113442ab0360SJames Bottomley res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, 113542ab0360SJames Bottomley &mode_data, NULL); 113642ab0360SJames Bottomley 113742ab0360SJames Bottomley error = -EINVAL; 113842ab0360SJames Bottomley if (!scsi_status_is_good(res)) 113942ab0360SJames Bottomley goto out; 114042ab0360SJames Bottomley 114142ab0360SJames Bottomley msdata = buffer + mode_data.header_length + 114242ab0360SJames Bottomley mode_data.block_descriptor_length; 114342ab0360SJames Bottomley 114442ab0360SJames Bottomley if (msdata - buffer > BUF_SIZE - 8) 114542ab0360SJames Bottomley goto out; 114642ab0360SJames Bottomley 114742ab0360SJames Bottomley error = 0; 114842ab0360SJames Bottomley 114942ab0360SJames Bottomley rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; 115042ab0360SJames Bottomley rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; 115142ab0360SJames Bottomley rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; 115242ab0360SJames Bottomley 115342ab0360SJames Bottomley out: 115442ab0360SJames Bottomley kfree(buffer); 115542ab0360SJames Bottomley return error; 115642ab0360SJames Bottomley } 115742ab0360SJames Bottomley EXPORT_SYMBOL(sas_read_port_mode_page); 115842ab0360SJames Bottomley 115979cb1819SJames Bottomley static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, 116079cb1819SJames Bottomley "sas_end_device", NULL, NULL, NULL); 116179cb1819SJames Bottomley 116242ab0360SJames Bottomley #define sas_end_dev_show_simple(field, name, format_string, cast) \ 116342ab0360SJames Bottomley static ssize_t \ 116442ab0360SJames Bottomley show_sas_end_dev_##name(struct class_device *cdev, char *buf) \ 116542ab0360SJames Bottomley { \ 116642ab0360SJames Bottomley struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ 116742ab0360SJames Bottomley struct sas_end_device *rdev = rphy_to_end_device(rphy); \ 116842ab0360SJames Bottomley \ 116942ab0360SJames Bottomley return snprintf(buf, 20, format_string, cast rdev->field); \ 117042ab0360SJames Bottomley } 117142ab0360SJames Bottomley 117242ab0360SJames Bottomley #define sas_end_dev_simple_attr(field, name, format_string, type) \ 117342ab0360SJames Bottomley sas_end_dev_show_simple(field, name, format_string, (type)) \ 117442ab0360SJames Bottomley static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ 117542ab0360SJames Bottomley show_sas_end_dev_##name, NULL) 117642ab0360SJames Bottomley 117742ab0360SJames Bottomley sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); 117842ab0360SJames Bottomley sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, 117942ab0360SJames Bottomley "%d\n", int); 118042ab0360SJames Bottomley sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, 118142ab0360SJames Bottomley "%d\n", int); 118242ab0360SJames Bottomley 118379cb1819SJames Bottomley static DECLARE_TRANSPORT_CLASS(sas_expander_class, 118479cb1819SJames Bottomley "sas_expander", NULL, NULL, NULL); 118579cb1819SJames Bottomley 118679cb1819SJames Bottomley #define sas_expander_show_simple(field, name, format_string, cast) \ 118779cb1819SJames Bottomley static ssize_t \ 118879cb1819SJames Bottomley show_sas_expander_##name(struct class_device *cdev, char *buf) \ 118979cb1819SJames Bottomley { \ 119079cb1819SJames Bottomley struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ 119179cb1819SJames Bottomley struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ 119279cb1819SJames Bottomley \ 119379cb1819SJames Bottomley return snprintf(buf, 20, format_string, cast edev->field); \ 119479cb1819SJames Bottomley } 119579cb1819SJames Bottomley 119679cb1819SJames Bottomley #define sas_expander_simple_attr(field, name, format_string, type) \ 119779cb1819SJames Bottomley sas_expander_show_simple(field, name, format_string, (type)) \ 119879cb1819SJames Bottomley static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \ 119979cb1819SJames Bottomley show_sas_expander_##name, NULL) 120079cb1819SJames Bottomley 120179cb1819SJames Bottomley sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); 120279cb1819SJames Bottomley sas_expander_simple_attr(product_id, product_id, "%s\n", char *); 120379cb1819SJames Bottomley sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); 120479cb1819SJames Bottomley sas_expander_simple_attr(component_vendor_id, component_vendor_id, 120579cb1819SJames Bottomley "%s\n", char *); 120679cb1819SJames Bottomley sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); 120779cb1819SJames Bottomley sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", 120879cb1819SJames Bottomley unsigned int); 120979cb1819SJames Bottomley sas_expander_simple_attr(level, level, "%d\n", int); 121042ab0360SJames Bottomley 1211c7ebbbceSChristoph Hellwig static DECLARE_TRANSPORT_CLASS(sas_rphy_class, 12122f8600dfSJames Bottomley "sas_device", NULL, NULL, NULL); 1213c7ebbbceSChristoph Hellwig 1214c7ebbbceSChristoph Hellwig static int sas_rphy_match(struct attribute_container *cont, struct device *dev) 1215c7ebbbceSChristoph Hellwig { 1216c7ebbbceSChristoph Hellwig struct Scsi_Host *shost; 1217c7ebbbceSChristoph Hellwig struct sas_internal *i; 1218c7ebbbceSChristoph Hellwig 1219c7ebbbceSChristoph Hellwig if (!scsi_is_sas_rphy(dev)) 1220c7ebbbceSChristoph Hellwig return 0; 1221c7ebbbceSChristoph Hellwig shost = dev_to_shost(dev->parent->parent); 1222c7ebbbceSChristoph Hellwig 1223c7ebbbceSChristoph Hellwig if (!shost->transportt) 1224c7ebbbceSChristoph Hellwig return 0; 1225c7ebbbceSChristoph Hellwig if (shost->transportt->host_attrs.ac.class != 1226c7ebbbceSChristoph Hellwig &sas_host_class.class) 1227c7ebbbceSChristoph Hellwig return 0; 1228c7ebbbceSChristoph Hellwig 1229c7ebbbceSChristoph Hellwig i = to_sas_internal(shost->transportt); 1230c7ebbbceSChristoph Hellwig return &i->rphy_attr_cont.ac == cont; 1231c7ebbbceSChristoph Hellwig } 1232c7ebbbceSChristoph Hellwig 123342ab0360SJames Bottomley static int sas_end_dev_match(struct attribute_container *cont, 123442ab0360SJames Bottomley struct device *dev) 123542ab0360SJames Bottomley { 123642ab0360SJames Bottomley struct Scsi_Host *shost; 123742ab0360SJames Bottomley struct sas_internal *i; 123842ab0360SJames Bottomley struct sas_rphy *rphy; 123942ab0360SJames Bottomley 124042ab0360SJames Bottomley if (!scsi_is_sas_rphy(dev)) 124142ab0360SJames Bottomley return 0; 124242ab0360SJames Bottomley shost = dev_to_shost(dev->parent->parent); 124342ab0360SJames Bottomley rphy = dev_to_rphy(dev); 124442ab0360SJames Bottomley 124542ab0360SJames Bottomley if (!shost->transportt) 124642ab0360SJames Bottomley return 0; 124742ab0360SJames Bottomley if (shost->transportt->host_attrs.ac.class != 124842ab0360SJames Bottomley &sas_host_class.class) 124942ab0360SJames Bottomley return 0; 125042ab0360SJames Bottomley 125142ab0360SJames Bottomley i = to_sas_internal(shost->transportt); 125242ab0360SJames Bottomley return &i->end_dev_attr_cont.ac == cont && 12532f8600dfSJames Bottomley rphy->identify.device_type == SAS_END_DEVICE; 125442ab0360SJames Bottomley } 125542ab0360SJames Bottomley 125679cb1819SJames Bottomley static int sas_expander_match(struct attribute_container *cont, 125779cb1819SJames Bottomley struct device *dev) 125879cb1819SJames Bottomley { 125979cb1819SJames Bottomley struct Scsi_Host *shost; 126079cb1819SJames Bottomley struct sas_internal *i; 126179cb1819SJames Bottomley struct sas_rphy *rphy; 126279cb1819SJames Bottomley 126379cb1819SJames Bottomley if (!scsi_is_sas_rphy(dev)) 126479cb1819SJames Bottomley return 0; 126579cb1819SJames Bottomley shost = dev_to_shost(dev->parent->parent); 126679cb1819SJames Bottomley rphy = dev_to_rphy(dev); 126779cb1819SJames Bottomley 126879cb1819SJames Bottomley if (!shost->transportt) 126979cb1819SJames Bottomley return 0; 127079cb1819SJames Bottomley if (shost->transportt->host_attrs.ac.class != 127179cb1819SJames Bottomley &sas_host_class.class) 127279cb1819SJames Bottomley return 0; 127379cb1819SJames Bottomley 127479cb1819SJames Bottomley i = to_sas_internal(shost->transportt); 127579cb1819SJames Bottomley return &i->expander_attr_cont.ac == cont && 127679cb1819SJames Bottomley (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || 12772f8600dfSJames Bottomley rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); 127879cb1819SJames Bottomley } 127979cb1819SJames Bottomley 12802f8600dfSJames Bottomley static void sas_expander_release(struct device *dev) 1281c7ebbbceSChristoph Hellwig { 1282c7ebbbceSChristoph Hellwig struct sas_rphy *rphy = dev_to_rphy(dev); 12832f8600dfSJames Bottomley struct sas_expander_device *edev = rphy_to_expander_device(rphy); 1284c7ebbbceSChristoph Hellwig 1285c7ebbbceSChristoph Hellwig put_device(dev->parent); 12862f8600dfSJames Bottomley kfree(edev); 1287c7ebbbceSChristoph Hellwig } 1288c7ebbbceSChristoph Hellwig 12892f8600dfSJames Bottomley static void sas_end_device_release(struct device *dev) 1290c7ebbbceSChristoph Hellwig { 12912f8600dfSJames Bottomley struct sas_rphy *rphy = dev_to_rphy(dev); 12922f8600dfSJames Bottomley struct sas_end_device *edev = rphy_to_end_device(rphy); 1293c7ebbbceSChristoph Hellwig 12942f8600dfSJames Bottomley put_device(dev->parent); 12952f8600dfSJames Bottomley kfree(edev); 1296c7ebbbceSChristoph Hellwig } 1297c7ebbbceSChristoph Hellwig 1298c7ebbbceSChristoph Hellwig /** 1299c5943d36SJames Bottomley * sas_rphy_initialize - common rphy intialization 1300c5943d36SJames Bottomley * @rphy: rphy to initialise 1301c5943d36SJames Bottomley * 1302c5943d36SJames Bottomley * Used by both sas_end_device_alloc() and sas_expander_alloc() to 1303c5943d36SJames Bottomley * initialise the common rphy component of each. 1304c5943d36SJames Bottomley */ 1305c5943d36SJames Bottomley static void sas_rphy_initialize(struct sas_rphy *rphy) 1306c5943d36SJames Bottomley { 1307c5943d36SJames Bottomley INIT_LIST_HEAD(&rphy->list); 1308c5943d36SJames Bottomley } 1309c5943d36SJames Bottomley 1310c5943d36SJames Bottomley /** 131142ab0360SJames Bottomley * sas_end_device_alloc - allocate an rphy for an end device 1312eb44820cSRob Landley * @parent: which port 131342ab0360SJames Bottomley * 131442ab0360SJames Bottomley * Allocates an SAS remote PHY structure, connected to @parent. 131542ab0360SJames Bottomley * 131642ab0360SJames Bottomley * Returns: 131742ab0360SJames Bottomley * SAS PHY allocated or %NULL if the allocation failed. 131842ab0360SJames Bottomley */ 131965c92b09SJames Bottomley struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) 132042ab0360SJames Bottomley { 132142ab0360SJames Bottomley struct Scsi_Host *shost = dev_to_shost(&parent->dev); 132242ab0360SJames Bottomley struct sas_end_device *rdev; 132342ab0360SJames Bottomley 132442ab0360SJames Bottomley rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); 132542ab0360SJames Bottomley if (!rdev) { 132642ab0360SJames Bottomley return NULL; 132742ab0360SJames Bottomley } 132842ab0360SJames Bottomley 132942ab0360SJames Bottomley device_initialize(&rdev->rphy.dev); 133042ab0360SJames Bottomley rdev->rphy.dev.parent = get_device(&parent->dev); 13312f8600dfSJames Bottomley rdev->rphy.dev.release = sas_end_device_release; 133265c92b09SJames Bottomley if (scsi_is_sas_expander_device(parent->dev.parent)) { 133365c92b09SJames Bottomley struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); 133465c92b09SJames Bottomley sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d", 133565c92b09SJames Bottomley shost->host_no, rphy->scsi_target_id, parent->port_identifier); 133665c92b09SJames Bottomley } else 133765c92b09SJames Bottomley sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d", 133865c92b09SJames Bottomley shost->host_no, parent->port_identifier); 133942ab0360SJames Bottomley rdev->rphy.identify.device_type = SAS_END_DEVICE; 1340c5943d36SJames Bottomley sas_rphy_initialize(&rdev->rphy); 134142ab0360SJames Bottomley transport_setup_device(&rdev->rphy.dev); 134242ab0360SJames Bottomley 134342ab0360SJames Bottomley return &rdev->rphy; 134442ab0360SJames Bottomley } 134542ab0360SJames Bottomley EXPORT_SYMBOL(sas_end_device_alloc); 134642ab0360SJames Bottomley 134779cb1819SJames Bottomley /** 134879cb1819SJames Bottomley * sas_expander_alloc - allocate an rphy for an end device 1349eb44820cSRob Landley * @parent: which port 1350eb44820cSRob Landley * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE 135179cb1819SJames Bottomley * 135279cb1819SJames Bottomley * Allocates an SAS remote PHY structure, connected to @parent. 135379cb1819SJames Bottomley * 135479cb1819SJames Bottomley * Returns: 135579cb1819SJames Bottomley * SAS PHY allocated or %NULL if the allocation failed. 135679cb1819SJames Bottomley */ 135765c92b09SJames Bottomley struct sas_rphy *sas_expander_alloc(struct sas_port *parent, 135879cb1819SJames Bottomley enum sas_device_type type) 135979cb1819SJames Bottomley { 136079cb1819SJames Bottomley struct Scsi_Host *shost = dev_to_shost(&parent->dev); 136179cb1819SJames Bottomley struct sas_expander_device *rdev; 136279cb1819SJames Bottomley struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 136379cb1819SJames Bottomley 136479cb1819SJames Bottomley BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && 136579cb1819SJames Bottomley type != SAS_FANOUT_EXPANDER_DEVICE); 136679cb1819SJames Bottomley 136779cb1819SJames Bottomley rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); 136879cb1819SJames Bottomley if (!rdev) { 136979cb1819SJames Bottomley return NULL; 137079cb1819SJames Bottomley } 137179cb1819SJames Bottomley 137279cb1819SJames Bottomley device_initialize(&rdev->rphy.dev); 137379cb1819SJames Bottomley rdev->rphy.dev.parent = get_device(&parent->dev); 13742f8600dfSJames Bottomley rdev->rphy.dev.release = sas_expander_release; 137579cb1819SJames Bottomley mutex_lock(&sas_host->lock); 137679cb1819SJames Bottomley rdev->rphy.scsi_target_id = sas_host->next_expander_id++; 137779cb1819SJames Bottomley mutex_unlock(&sas_host->lock); 137879cb1819SJames Bottomley sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d", 137979cb1819SJames Bottomley shost->host_no, rdev->rphy.scsi_target_id); 138079cb1819SJames Bottomley rdev->rphy.identify.device_type = type; 1381c5943d36SJames Bottomley sas_rphy_initialize(&rdev->rphy); 138279cb1819SJames Bottomley transport_setup_device(&rdev->rphy.dev); 138379cb1819SJames Bottomley 138479cb1819SJames Bottomley return &rdev->rphy; 138579cb1819SJames Bottomley } 138679cb1819SJames Bottomley EXPORT_SYMBOL(sas_expander_alloc); 138742ab0360SJames Bottomley 138842ab0360SJames Bottomley /** 1389eb44820cSRob Landley * sas_rphy_add - add a SAS remote PHY to the device hierarchy 1390c7ebbbceSChristoph Hellwig * @rphy: The remote PHY to be added 1391c7ebbbceSChristoph Hellwig * 1392c7ebbbceSChristoph Hellwig * Publishes a SAS remote PHY to the rest of the system. 1393c7ebbbceSChristoph Hellwig */ 1394c7ebbbceSChristoph Hellwig int sas_rphy_add(struct sas_rphy *rphy) 1395c7ebbbceSChristoph Hellwig { 139665c92b09SJames Bottomley struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); 1397c7ebbbceSChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); 1398c7ebbbceSChristoph Hellwig struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 1399c7ebbbceSChristoph Hellwig struct sas_identify *identify = &rphy->identify; 1400c7ebbbceSChristoph Hellwig int error; 1401c7ebbbceSChristoph Hellwig 1402c7ebbbceSChristoph Hellwig if (parent->rphy) 1403c7ebbbceSChristoph Hellwig return -ENXIO; 1404c7ebbbceSChristoph Hellwig parent->rphy = rphy; 1405c7ebbbceSChristoph Hellwig 1406c7ebbbceSChristoph Hellwig error = device_add(&rphy->dev); 1407c7ebbbceSChristoph Hellwig if (error) 1408c7ebbbceSChristoph Hellwig return error; 1409c7ebbbceSChristoph Hellwig transport_add_device(&rphy->dev); 1410c7ebbbceSChristoph Hellwig transport_configure_device(&rphy->dev); 141139dca558SJames Bottomley if (sas_bsg_initialize(shost, rphy)) 141239dca558SJames Bottomley printk("fail to a bsg device %s\n", rphy->dev.bus_id); 141339dca558SJames Bottomley 1414c7ebbbceSChristoph Hellwig 1415e02f3f59SChristoph Hellwig mutex_lock(&sas_host->lock); 1416c7ebbbceSChristoph Hellwig list_add_tail(&rphy->list, &sas_host->rphy_list); 1417c7ebbbceSChristoph Hellwig if (identify->device_type == SAS_END_DEVICE && 1418c7ebbbceSChristoph Hellwig (identify->target_port_protocols & 1419c7ebbbceSChristoph Hellwig (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) 1420c7ebbbceSChristoph Hellwig rphy->scsi_target_id = sas_host->next_target_id++; 14217676f83aSJames Bottomley else if (identify->device_type == SAS_END_DEVICE) 14227676f83aSJames Bottomley rphy->scsi_target_id = -1; 1423e02f3f59SChristoph Hellwig mutex_unlock(&sas_host->lock); 1424c7ebbbceSChristoph Hellwig 142579cb1819SJames Bottomley if (identify->device_type == SAS_END_DEVICE && 142679cb1819SJames Bottomley rphy->scsi_target_id != -1) { 1427e8bf3941SJames Bottomley scsi_scan_target(&rphy->dev, 0, 1428c8490f3aSDarrick J. Wong rphy->scsi_target_id, SCAN_WILD_CARD, 0); 1429c7ebbbceSChristoph Hellwig } 1430c7ebbbceSChristoph Hellwig 1431c7ebbbceSChristoph Hellwig return 0; 1432c7ebbbceSChristoph Hellwig } 1433c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_rphy_add); 1434c7ebbbceSChristoph Hellwig 1435c7ebbbceSChristoph Hellwig /** 1436eb44820cSRob Landley * sas_rphy_free - free a SAS remote PHY 1437eb44820cSRob Landley * @rphy: SAS remote PHY to free 1438c7ebbbceSChristoph Hellwig * 1439c7ebbbceSChristoph Hellwig * Frees the specified SAS remote PHY. 1440c7ebbbceSChristoph Hellwig * 1441c7ebbbceSChristoph Hellwig * Note: 1442c7ebbbceSChristoph Hellwig * This function must only be called on a remote 1443c7ebbbceSChristoph Hellwig * PHY that has not sucessfully been added using 14446f63caaeSDarrick J. Wong * sas_rphy_add() (or has been sas_rphy_remove()'d) 1445c7ebbbceSChristoph Hellwig */ 1446c7ebbbceSChristoph Hellwig void sas_rphy_free(struct sas_rphy *rphy) 1447c7ebbbceSChristoph Hellwig { 144892aab646SMike Anderson struct device *dev = &rphy->dev; 1449c7ebbbceSChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); 1450c7ebbbceSChristoph Hellwig struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 1451c7ebbbceSChristoph Hellwig 1452e02f3f59SChristoph Hellwig mutex_lock(&sas_host->lock); 1453c7ebbbceSChristoph Hellwig list_del(&rphy->list); 1454e02f3f59SChristoph Hellwig mutex_unlock(&sas_host->lock); 1455c7ebbbceSChristoph Hellwig 1456b6aff669SJames Bottomley sas_bsg_remove(shost, rphy); 1457b6aff669SJames Bottomley 145892aab646SMike Anderson transport_destroy_device(dev); 14592f8600dfSJames Bottomley 146092aab646SMike Anderson put_device(dev); 1461c7ebbbceSChristoph Hellwig } 1462c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_rphy_free); 1463c7ebbbceSChristoph Hellwig 1464c7ebbbceSChristoph Hellwig /** 1465eb44820cSRob Landley * sas_rphy_delete - remove and free SAS remote PHY 14666f63caaeSDarrick J. Wong * @rphy: SAS remote PHY to remove and free 1467c7ebbbceSChristoph Hellwig * 14686f63caaeSDarrick J. Wong * Removes the specified SAS remote PHY and frees it. 1469c7ebbbceSChristoph Hellwig */ 1470c7ebbbceSChristoph Hellwig void 1471c7ebbbceSChristoph Hellwig sas_rphy_delete(struct sas_rphy *rphy) 1472c7ebbbceSChristoph Hellwig { 14736f63caaeSDarrick J. Wong sas_rphy_remove(rphy); 14746f63caaeSDarrick J. Wong sas_rphy_free(rphy); 14756f63caaeSDarrick J. Wong } 14766f63caaeSDarrick J. Wong EXPORT_SYMBOL(sas_rphy_delete); 14776f63caaeSDarrick J. Wong 14786f63caaeSDarrick J. Wong /** 1479eb44820cSRob Landley * sas_rphy_remove - remove SAS remote PHY 14806f63caaeSDarrick J. Wong * @rphy: SAS remote phy to remove 14816f63caaeSDarrick J. Wong * 14826f63caaeSDarrick J. Wong * Removes the specified SAS remote PHY. 14836f63caaeSDarrick J. Wong */ 14846f63caaeSDarrick J. Wong void 14856f63caaeSDarrick J. Wong sas_rphy_remove(struct sas_rphy *rphy) 14866f63caaeSDarrick J. Wong { 1487c7ebbbceSChristoph Hellwig struct device *dev = &rphy->dev; 148865c92b09SJames Bottomley struct sas_port *parent = dev_to_sas_port(dev->parent); 1489c7ebbbceSChristoph Hellwig 1490d4054239SChristoph Hellwig switch (rphy->identify.device_type) { 1491d4054239SChristoph Hellwig case SAS_END_DEVICE: 1492fe8b2304SChristoph Hellwig scsi_remove_target(dev); 1493d4054239SChristoph Hellwig break; 1494d4054239SChristoph Hellwig case SAS_EDGE_EXPANDER_DEVICE: 1495d4054239SChristoph Hellwig case SAS_FANOUT_EXPANDER_DEVICE: 149665c92b09SJames Bottomley sas_remove_children(dev); 1497d4054239SChristoph Hellwig break; 1498d4054239SChristoph Hellwig default: 1499d4054239SChristoph Hellwig break; 1500d4054239SChristoph Hellwig } 1501c7ebbbceSChristoph Hellwig 1502fe8b2304SChristoph Hellwig transport_remove_device(dev); 1503fe8b2304SChristoph Hellwig device_del(dev); 1504c7ebbbceSChristoph Hellwig 150533b114e9SChristoph Hellwig parent->rphy = NULL; 1506c7ebbbceSChristoph Hellwig } 15076f63caaeSDarrick J. Wong EXPORT_SYMBOL(sas_rphy_remove); 1508c7ebbbceSChristoph Hellwig 1509c7ebbbceSChristoph Hellwig /** 1510eb44820cSRob Landley * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY 1511c7ebbbceSChristoph Hellwig * @dev: device to check 1512c7ebbbceSChristoph Hellwig * 1513c7ebbbceSChristoph Hellwig * Returns: 1514c7ebbbceSChristoph Hellwig * %1 if the device represents a SAS remote PHY, %0 else 1515c7ebbbceSChristoph Hellwig */ 1516c7ebbbceSChristoph Hellwig int scsi_is_sas_rphy(const struct device *dev) 1517c7ebbbceSChristoph Hellwig { 15182f8600dfSJames Bottomley return dev->release == sas_end_device_release || 15192f8600dfSJames Bottomley dev->release == sas_expander_release; 1520c7ebbbceSChristoph Hellwig } 1521c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(scsi_is_sas_rphy); 1522c7ebbbceSChristoph Hellwig 1523c7ebbbceSChristoph Hellwig 1524c7ebbbceSChristoph Hellwig /* 1525c7ebbbceSChristoph Hellwig * SCSI scan helper 1526c7ebbbceSChristoph Hellwig */ 1527c7ebbbceSChristoph Hellwig 1528e02f3f59SChristoph Hellwig static int sas_user_scan(struct Scsi_Host *shost, uint channel, 1529e02f3f59SChristoph Hellwig uint id, uint lun) 1530c7ebbbceSChristoph Hellwig { 1531c7ebbbceSChristoph Hellwig struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 1532c7ebbbceSChristoph Hellwig struct sas_rphy *rphy; 1533c7ebbbceSChristoph Hellwig 1534e02f3f59SChristoph Hellwig mutex_lock(&sas_host->lock); 1535c7ebbbceSChristoph Hellwig list_for_each_entry(rphy, &sas_host->rphy_list, list) { 15366d99a3f3SJames Bottomley if (rphy->identify.device_type != SAS_END_DEVICE || 15376d99a3f3SJames Bottomley rphy->scsi_target_id == -1) 1538e02f3f59SChristoph Hellwig continue; 1539e02f3f59SChristoph Hellwig 1540e8bf3941SJames Bottomley if ((channel == SCAN_WILD_CARD || channel == 0) && 1541e02f3f59SChristoph Hellwig (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { 1542e8bf3941SJames Bottomley scsi_scan_target(&rphy->dev, 0, 1543e02f3f59SChristoph Hellwig rphy->scsi_target_id, lun, 1); 1544e02f3f59SChristoph Hellwig } 1545e02f3f59SChristoph Hellwig } 1546e02f3f59SChristoph Hellwig mutex_unlock(&sas_host->lock); 1547e02f3f59SChristoph Hellwig 1548e02f3f59SChristoph Hellwig return 0; 1549c7ebbbceSChristoph Hellwig } 1550c7ebbbceSChristoph Hellwig 1551c7ebbbceSChristoph Hellwig 1552c7ebbbceSChristoph Hellwig /* 1553c7ebbbceSChristoph Hellwig * Setup / Teardown code 1554c7ebbbceSChristoph Hellwig */ 1555c7ebbbceSChristoph Hellwig 155642ab0360SJames Bottomley #define SETUP_TEMPLATE(attrb, field, perm, test) \ 155742ab0360SJames Bottomley i->private_##attrb[count] = class_device_attr_##field; \ 155842ab0360SJames Bottomley i->private_##attrb[count].attr.mode = perm; \ 155942ab0360SJames Bottomley i->attrb[count] = &i->private_##attrb[count]; \ 156042ab0360SJames Bottomley if (test) \ 1561c7ebbbceSChristoph Hellwig count++ 1562c7ebbbceSChristoph Hellwig 1563d24e1eebSJames Bottomley #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ 1564d24e1eebSJames Bottomley i->private_##attrb[count] = class_device_attr_##field; \ 1565d24e1eebSJames Bottomley i->private_##attrb[count].attr.mode = perm; \ 1566d24e1eebSJames Bottomley if (ro_test) { \ 1567d24e1eebSJames Bottomley i->private_##attrb[count].attr.mode = ro_perm; \ 1568d24e1eebSJames Bottomley i->private_##attrb[count].store = NULL; \ 1569d24e1eebSJames Bottomley } \ 1570d24e1eebSJames Bottomley i->attrb[count] = &i->private_##attrb[count]; \ 1571d24e1eebSJames Bottomley if (test) \ 1572d24e1eebSJames Bottomley count++ 157342ab0360SJames Bottomley 157442ab0360SJames Bottomley #define SETUP_RPORT_ATTRIBUTE(field) \ 157542ab0360SJames Bottomley SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) 157642ab0360SJames Bottomley 1577dd9fbb52SJames Bottomley #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ 157842ab0360SJames Bottomley SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) 1579dd9fbb52SJames Bottomley 158065c92b09SJames Bottomley #define SETUP_PHY_ATTRIBUTE(field) \ 158142ab0360SJames Bottomley SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) 1582c7ebbbceSChristoph Hellwig 1583d24e1eebSJames Bottomley #define SETUP_PHY_ATTRIBUTE_RW(field) \ 1584d24e1eebSJames Bottomley SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ 1585d24e1eebSJames Bottomley !i->f->set_phy_speed, S_IRUGO) 1586d24e1eebSJames Bottomley 1587acbf167dSDarrick J. Wong #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ 1588acbf167dSDarrick J. Wong SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ 1589acbf167dSDarrick J. Wong !i->f->func, S_IRUGO) 1590acbf167dSDarrick J. Wong 159165c92b09SJames Bottomley #define SETUP_PORT_ATTRIBUTE(field) \ 159265c92b09SJames Bottomley SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) 159365c92b09SJames Bottomley 159465c92b09SJames Bottomley #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ 159542ab0360SJames Bottomley SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) 1596dd9fbb52SJames Bottomley 159765c92b09SJames Bottomley #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ 1598fe3b5bfeSDarrick J. Wong SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) 159907ba3a95SChristoph Hellwig 160065c92b09SJames Bottomley #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ 1601fe3b5bfeSDarrick J. Wong SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) 1602dd9fbb52SJames Bottomley 160342ab0360SJames Bottomley #define SETUP_END_DEV_ATTRIBUTE(field) \ 160442ab0360SJames Bottomley SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) 1605c7ebbbceSChristoph Hellwig 160679cb1819SJames Bottomley #define SETUP_EXPANDER_ATTRIBUTE(field) \ 160779cb1819SJames Bottomley SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) 160879cb1819SJames Bottomley 1609c7ebbbceSChristoph Hellwig /** 1610eb44820cSRob Landley * sas_attach_transport - instantiate SAS transport template 1611c7ebbbceSChristoph Hellwig * @ft: SAS transport class function template 1612c7ebbbceSChristoph Hellwig */ 1613c7ebbbceSChristoph Hellwig struct scsi_transport_template * 1614c7ebbbceSChristoph Hellwig sas_attach_transport(struct sas_function_template *ft) 1615c7ebbbceSChristoph Hellwig { 1616c7ebbbceSChristoph Hellwig struct sas_internal *i; 1617c7ebbbceSChristoph Hellwig int count; 1618c7ebbbceSChristoph Hellwig 161924669f75SJes Sorensen i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); 1620c7ebbbceSChristoph Hellwig if (!i) 1621c7ebbbceSChristoph Hellwig return NULL; 1622c7ebbbceSChristoph Hellwig 1623e02f3f59SChristoph Hellwig i->t.user_scan = sas_user_scan; 1624c7ebbbceSChristoph Hellwig 1625c7ebbbceSChristoph Hellwig i->t.host_attrs.ac.attrs = &i->host_attrs[0]; 1626c7ebbbceSChristoph Hellwig i->t.host_attrs.ac.class = &sas_host_class.class; 1627c7ebbbceSChristoph Hellwig i->t.host_attrs.ac.match = sas_host_match; 1628c7ebbbceSChristoph Hellwig transport_container_register(&i->t.host_attrs); 1629c7ebbbceSChristoph Hellwig i->t.host_size = sizeof(struct sas_host_attrs); 1630c7ebbbceSChristoph Hellwig 1631c7ebbbceSChristoph Hellwig i->phy_attr_cont.ac.class = &sas_phy_class.class; 1632c7ebbbceSChristoph Hellwig i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; 1633c7ebbbceSChristoph Hellwig i->phy_attr_cont.ac.match = sas_phy_match; 1634c7ebbbceSChristoph Hellwig transport_container_register(&i->phy_attr_cont); 1635c7ebbbceSChristoph Hellwig 163665c92b09SJames Bottomley i->port_attr_cont.ac.class = &sas_port_class.class; 163765c92b09SJames Bottomley i->port_attr_cont.ac.attrs = &i->port_attrs[0]; 163865c92b09SJames Bottomley i->port_attr_cont.ac.match = sas_port_match; 163965c92b09SJames Bottomley transport_container_register(&i->port_attr_cont); 164065c92b09SJames Bottomley 1641c7ebbbceSChristoph Hellwig i->rphy_attr_cont.ac.class = &sas_rphy_class.class; 1642c7ebbbceSChristoph Hellwig i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; 1643c7ebbbceSChristoph Hellwig i->rphy_attr_cont.ac.match = sas_rphy_match; 1644c7ebbbceSChristoph Hellwig transport_container_register(&i->rphy_attr_cont); 1645c7ebbbceSChristoph Hellwig 164642ab0360SJames Bottomley i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; 164742ab0360SJames Bottomley i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; 164842ab0360SJames Bottomley i->end_dev_attr_cont.ac.match = sas_end_dev_match; 164942ab0360SJames Bottomley transport_container_register(&i->end_dev_attr_cont); 165042ab0360SJames Bottomley 165179cb1819SJames Bottomley i->expander_attr_cont.ac.class = &sas_expander_class.class; 165279cb1819SJames Bottomley i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; 165379cb1819SJames Bottomley i->expander_attr_cont.ac.match = sas_expander_match; 165479cb1819SJames Bottomley transport_container_register(&i->expander_attr_cont); 165579cb1819SJames Bottomley 1656c7ebbbceSChristoph Hellwig i->f = ft; 1657c7ebbbceSChristoph Hellwig 1658c7ebbbceSChristoph Hellwig count = 0; 165965c92b09SJames Bottomley SETUP_PORT_ATTRIBUTE(num_phys); 1660c7ebbbceSChristoph Hellwig i->host_attrs[count] = NULL; 1661c7ebbbceSChristoph Hellwig 1662c7ebbbceSChristoph Hellwig count = 0; 166365c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(initiator_port_protocols); 166465c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(target_port_protocols); 166565c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(device_type); 166665c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(sas_address); 166765c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(phy_identifier); 166865c92b09SJames Bottomley //SETUP_PHY_ATTRIBUTE(port_identifier); 166965c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(negotiated_linkrate); 167065c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); 1671d24e1eebSJames Bottomley SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); 167265c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); 1673d24e1eebSJames Bottomley SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); 1674c3ee74c4SChristoph Hellwig 167565c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(invalid_dword_count); 167665c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(running_disparity_error_count); 167765c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); 167865c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); 167965c92b09SJames Bottomley SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); 168065c92b09SJames Bottomley SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); 1681acbf167dSDarrick J. Wong SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); 1682c7ebbbceSChristoph Hellwig i->phy_attrs[count] = NULL; 1683c7ebbbceSChristoph Hellwig 1684c7ebbbceSChristoph Hellwig count = 0; 168565c92b09SJames Bottomley SETUP_PORT_ATTRIBUTE(num_phys); 168665c92b09SJames Bottomley i->port_attrs[count] = NULL; 168765c92b09SJames Bottomley 168865c92b09SJames Bottomley count = 0; 1689c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); 1690c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); 1691c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_device_type); 1692c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_sas_address); 1693c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); 1694dd9fbb52SJames Bottomley SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, 1695dd9fbb52SJames Bottomley get_enclosure_identifier); 1696dd9fbb52SJames Bottomley SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, 1697dd9fbb52SJames Bottomley get_bay_identifier); 1698c7ebbbceSChristoph Hellwig i->rphy_attrs[count] = NULL; 1699c7ebbbceSChristoph Hellwig 170042ab0360SJames Bottomley count = 0; 170142ab0360SJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); 170242ab0360SJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); 170342ab0360SJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); 170442ab0360SJames Bottomley i->end_dev_attrs[count] = NULL; 170542ab0360SJames Bottomley 170679cb1819SJames Bottomley count = 0; 170779cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(vendor_id); 170879cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(product_id); 170979cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(product_rev); 171079cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); 171179cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(component_id); 171279cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(component_revision_id); 171379cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(level); 171479cb1819SJames Bottomley i->expander_attrs[count] = NULL; 171579cb1819SJames Bottomley 1716c7ebbbceSChristoph Hellwig return &i->t; 1717c7ebbbceSChristoph Hellwig } 1718c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_attach_transport); 1719c7ebbbceSChristoph Hellwig 1720c7ebbbceSChristoph Hellwig /** 1721eb44820cSRob Landley * sas_release_transport - release SAS transport template instance 1722c7ebbbceSChristoph Hellwig * @t: transport template instance 1723c7ebbbceSChristoph Hellwig */ 1724c7ebbbceSChristoph Hellwig void sas_release_transport(struct scsi_transport_template *t) 1725c7ebbbceSChristoph Hellwig { 1726c7ebbbceSChristoph Hellwig struct sas_internal *i = to_sas_internal(t); 1727c7ebbbceSChristoph Hellwig 1728c7ebbbceSChristoph Hellwig transport_container_unregister(&i->t.host_attrs); 1729c7ebbbceSChristoph Hellwig transport_container_unregister(&i->phy_attr_cont); 173065c92b09SJames Bottomley transport_container_unregister(&i->port_attr_cont); 1731c7ebbbceSChristoph Hellwig transport_container_unregister(&i->rphy_attr_cont); 1732db82f841SJames Bottomley transport_container_unregister(&i->end_dev_attr_cont); 173379cb1819SJames Bottomley transport_container_unregister(&i->expander_attr_cont); 1734c7ebbbceSChristoph Hellwig 1735c7ebbbceSChristoph Hellwig kfree(i); 1736c7ebbbceSChristoph Hellwig } 1737c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_release_transport); 1738c7ebbbceSChristoph Hellwig 1739c7ebbbceSChristoph Hellwig static __init int sas_transport_init(void) 1740c7ebbbceSChristoph Hellwig { 1741c7ebbbceSChristoph Hellwig int error; 1742c7ebbbceSChristoph Hellwig 1743c7ebbbceSChristoph Hellwig error = transport_class_register(&sas_host_class); 1744c7ebbbceSChristoph Hellwig if (error) 1745c7ebbbceSChristoph Hellwig goto out; 1746c7ebbbceSChristoph Hellwig error = transport_class_register(&sas_phy_class); 1747c7ebbbceSChristoph Hellwig if (error) 1748c7ebbbceSChristoph Hellwig goto out_unregister_transport; 174965c92b09SJames Bottomley error = transport_class_register(&sas_port_class); 1750c7ebbbceSChristoph Hellwig if (error) 1751c7ebbbceSChristoph Hellwig goto out_unregister_phy; 175265c92b09SJames Bottomley error = transport_class_register(&sas_rphy_class); 175365c92b09SJames Bottomley if (error) 175465c92b09SJames Bottomley goto out_unregister_port; 175542ab0360SJames Bottomley error = transport_class_register(&sas_end_dev_class); 175642ab0360SJames Bottomley if (error) 175742ab0360SJames Bottomley goto out_unregister_rphy; 175879cb1819SJames Bottomley error = transport_class_register(&sas_expander_class); 175979cb1819SJames Bottomley if (error) 176079cb1819SJames Bottomley goto out_unregister_end_dev; 1761c7ebbbceSChristoph Hellwig 1762c7ebbbceSChristoph Hellwig return 0; 1763c7ebbbceSChristoph Hellwig 176479cb1819SJames Bottomley out_unregister_end_dev: 176579cb1819SJames Bottomley transport_class_unregister(&sas_end_dev_class); 176642ab0360SJames Bottomley out_unregister_rphy: 176742ab0360SJames Bottomley transport_class_unregister(&sas_rphy_class); 176865c92b09SJames Bottomley out_unregister_port: 176965c92b09SJames Bottomley transport_class_unregister(&sas_port_class); 1770c7ebbbceSChristoph Hellwig out_unregister_phy: 1771c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_phy_class); 1772c7ebbbceSChristoph Hellwig out_unregister_transport: 1773c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_host_class); 1774c7ebbbceSChristoph Hellwig out: 1775c7ebbbceSChristoph Hellwig return error; 1776c7ebbbceSChristoph Hellwig 1777c7ebbbceSChristoph Hellwig } 1778c7ebbbceSChristoph Hellwig 1779c7ebbbceSChristoph Hellwig static void __exit sas_transport_exit(void) 1780c7ebbbceSChristoph Hellwig { 1781c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_host_class); 1782c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_phy_class); 178365c92b09SJames Bottomley transport_class_unregister(&sas_port_class); 1784c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_rphy_class); 178542ab0360SJames Bottomley transport_class_unregister(&sas_end_dev_class); 178679cb1819SJames Bottomley transport_class_unregister(&sas_expander_class); 1787c7ebbbceSChristoph Hellwig } 1788c7ebbbceSChristoph Hellwig 1789c7ebbbceSChristoph Hellwig MODULE_AUTHOR("Christoph Hellwig"); 179086b9c4c1SAlexis Bruemmer MODULE_DESCRIPTION("SAS Transport Attributes"); 1791c7ebbbceSChristoph Hellwig MODULE_LICENSE("GPL"); 1792c7ebbbceSChristoph Hellwig 1793c7ebbbceSChristoph Hellwig module_init(sas_transport_init); 1794c7ebbbceSChristoph Hellwig module_exit(sas_transport_exit); 1795