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, 9b1c11812SJoe Perches * and various sysfs attributes to expose these topologies and management 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 */ 56ee959b00STony Jones #define SAS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ 57ee959b00STony Jones struct device_attribute dev_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" }, 154d84fd392SSreekanth Reddy { SAS_LINK_RATE_12_0_GBPS, "12.0 Gbit" }, 155c7ebbbceSChristoph Hellwig }; 156c7ebbbceSChristoph Hellwig sas_bitfield_name_search(linkspeed, sas_linkspeed_names) 157d24e1eebSJames Bottomley sas_bitfield_name_set(linkspeed, sas_linkspeed_names) 158c7ebbbceSChristoph Hellwig 1590f88009dSJames Bottomley static struct sas_end_device *sas_sdev_to_rdev(struct scsi_device *sdev) 1600f88009dSJames Bottomley { 1610f88009dSJames Bottomley struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); 1620f88009dSJames Bottomley struct sas_end_device *rdev; 1630f88009dSJames Bottomley 1640f88009dSJames Bottomley BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); 1650f88009dSJames Bottomley 1660f88009dSJames Bottomley rdev = rphy_to_end_device(rphy); 1670f88009dSJames Bottomley return rdev; 1680f88009dSJames Bottomley } 1690f88009dSJames Bottomley 1707aa68e80SFUJITA Tomonori static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost, 1717aa68e80SFUJITA Tomonori struct sas_rphy *rphy) 1727aa68e80SFUJITA Tomonori { 1737aa68e80SFUJITA Tomonori struct request *req; 1747aa68e80SFUJITA Tomonori int ret; 1757aa68e80SFUJITA Tomonori int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *); 1767aa68e80SFUJITA Tomonori 1777eaceaccSJens Axboe while ((req = blk_fetch_request(q)) != NULL) { 1787aa68e80SFUJITA Tomonori spin_unlock_irq(q->queue_lock); 1797aa68e80SFUJITA Tomonori 1807aa68e80SFUJITA Tomonori handler = to_sas_internal(shost->transportt)->f->smp_handler; 1817aa68e80SFUJITA Tomonori ret = handler(shost, rphy, req); 1822d507a01SJames Bottomley req->errors = ret; 1837aa68e80SFUJITA Tomonori 18493bdcba5SFUJITA Tomonori blk_end_request_all(req, ret); 1857aa68e80SFUJITA Tomonori 18693bdcba5SFUJITA Tomonori spin_lock_irq(q->queue_lock); 1877aa68e80SFUJITA Tomonori } 1887aa68e80SFUJITA Tomonori } 1897aa68e80SFUJITA Tomonori 1907aa68e80SFUJITA Tomonori static void sas_host_smp_request(struct request_queue *q) 1917aa68e80SFUJITA Tomonori { 1927aa68e80SFUJITA Tomonori sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL); 1937aa68e80SFUJITA Tomonori } 1947aa68e80SFUJITA Tomonori 1957aa68e80SFUJITA Tomonori static void sas_non_host_smp_request(struct request_queue *q) 1967aa68e80SFUJITA Tomonori { 1977aa68e80SFUJITA Tomonori struct sas_rphy *rphy = q->queuedata; 1987aa68e80SFUJITA Tomonori sas_smp_request(q, rphy_to_shost(rphy), rphy); 1997aa68e80SFUJITA Tomonori } 2007aa68e80SFUJITA Tomonori 20193c20a59SFUJITA Tomonori static void sas_host_release(struct device *dev) 20293c20a59SFUJITA Tomonori { 20393c20a59SFUJITA Tomonori struct Scsi_Host *shost = dev_to_shost(dev); 20493c20a59SFUJITA Tomonori struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 20593c20a59SFUJITA Tomonori struct request_queue *q = sas_host->q; 20693c20a59SFUJITA Tomonori 20793c20a59SFUJITA Tomonori if (q) 20893c20a59SFUJITA Tomonori blk_cleanup_queue(q); 20993c20a59SFUJITA Tomonori } 21093c20a59SFUJITA Tomonori 21139dca558SJames Bottomley static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy) 2127aa68e80SFUJITA Tomonori { 2137aa68e80SFUJITA Tomonori struct request_queue *q; 2147aa68e80SFUJITA Tomonori int error; 21539dca558SJames Bottomley struct device *dev; 21671610f55SKay Sievers char namebuf[20]; 21739dca558SJames Bottomley const char *name; 21893c20a59SFUJITA Tomonori void (*release)(struct device *); 2197aa68e80SFUJITA Tomonori 2207aa68e80SFUJITA Tomonori if (!to_sas_internal(shost->transportt)->f->smp_handler) { 2217aa68e80SFUJITA Tomonori printk("%s can't handle SMP requests\n", shost->hostt->name); 2227aa68e80SFUJITA Tomonori return 0; 2237aa68e80SFUJITA Tomonori } 2247aa68e80SFUJITA Tomonori 22539dca558SJames Bottomley if (rphy) { 2267aa68e80SFUJITA Tomonori q = blk_init_queue(sas_non_host_smp_request, NULL); 22739dca558SJames Bottomley dev = &rphy->dev; 22871610f55SKay Sievers name = dev_name(dev); 22993c20a59SFUJITA Tomonori release = NULL; 23039dca558SJames Bottomley } else { 2317aa68e80SFUJITA Tomonori q = blk_init_queue(sas_host_smp_request, NULL); 23239dca558SJames Bottomley dev = &shost->shost_gendev; 23339dca558SJames Bottomley snprintf(namebuf, sizeof(namebuf), 23439dca558SJames Bottomley "sas_host%d", shost->host_no); 23539dca558SJames Bottomley name = namebuf; 23693c20a59SFUJITA Tomonori release = sas_host_release; 23739dca558SJames Bottomley } 2387aa68e80SFUJITA Tomonori if (!q) 2397aa68e80SFUJITA Tomonori return -ENOMEM; 2407aa68e80SFUJITA Tomonori 24193c20a59SFUJITA Tomonori error = bsg_register_queue(q, dev, name, release); 2427aa68e80SFUJITA Tomonori if (error) { 2437aa68e80SFUJITA Tomonori blk_cleanup_queue(q); 2447aa68e80SFUJITA Tomonori return -ENOMEM; 2457aa68e80SFUJITA Tomonori } 2467aa68e80SFUJITA Tomonori 2477aa68e80SFUJITA Tomonori if (rphy) 248b6aff669SJames Bottomley rphy->q = q; 249b6aff669SJames Bottomley else 250b6aff669SJames Bottomley to_sas_host_attrs(shost)->q = q; 251b6aff669SJames Bottomley 252b6aff669SJames Bottomley if (rphy) 2537aa68e80SFUJITA Tomonori q->queuedata = rphy; 2547aa68e80SFUJITA Tomonori else 2557aa68e80SFUJITA Tomonori q->queuedata = shost; 2567aa68e80SFUJITA Tomonori 25775ad23bcSNick Piggin queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); 2587aa68e80SFUJITA Tomonori return 0; 2597aa68e80SFUJITA Tomonori } 2607aa68e80SFUJITA Tomonori 261b6aff669SJames Bottomley static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy) 262b6aff669SJames Bottomley { 263b6aff669SJames Bottomley struct request_queue *q; 264b6aff669SJames Bottomley 265b6aff669SJames Bottomley if (rphy) 266b6aff669SJames Bottomley q = rphy->q; 267b6aff669SJames Bottomley else 268b6aff669SJames Bottomley q = to_sas_host_attrs(shost)->q; 269b6aff669SJames Bottomley 270b6aff669SJames Bottomley if (!q) 271b6aff669SJames Bottomley return; 272b6aff669SJames Bottomley 273b6aff669SJames Bottomley bsg_unregister_queue(q); 274b6aff669SJames Bottomley } 275b6aff669SJames Bottomley 276c7ebbbceSChristoph Hellwig /* 277c7ebbbceSChristoph Hellwig * SAS host attributes 278c7ebbbceSChristoph Hellwig */ 279c7ebbbceSChristoph Hellwig 28037be6eebSJames Bottomley static int sas_host_setup(struct transport_container *tc, struct device *dev, 281ee959b00STony Jones struct device *cdev) 282c7ebbbceSChristoph Hellwig { 283c7ebbbceSChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(dev); 284c7ebbbceSChristoph Hellwig struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 285c7ebbbceSChristoph Hellwig 286c7ebbbceSChristoph Hellwig INIT_LIST_HEAD(&sas_host->rphy_list); 287e02f3f59SChristoph Hellwig mutex_init(&sas_host->lock); 288c7ebbbceSChristoph Hellwig sas_host->next_target_id = 0; 28979cb1819SJames Bottomley sas_host->next_expander_id = 0; 290c9fefeb2SJames Bottomley sas_host->next_port_id = 0; 2917aa68e80SFUJITA Tomonori 29239dca558SJames Bottomley if (sas_bsg_initialize(shost, NULL)) 2937aa68e80SFUJITA Tomonori dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", 2947aa68e80SFUJITA Tomonori shost->host_no); 2957aa68e80SFUJITA Tomonori 296c7ebbbceSChristoph Hellwig return 0; 297c7ebbbceSChristoph Hellwig } 298c7ebbbceSChristoph Hellwig 299b6aff669SJames Bottomley static int sas_host_remove(struct transport_container *tc, struct device *dev, 300ee959b00STony Jones struct device *cdev) 301b6aff669SJames Bottomley { 302b6aff669SJames Bottomley struct Scsi_Host *shost = dev_to_shost(dev); 303b6aff669SJames Bottomley 304b6aff669SJames Bottomley sas_bsg_remove(shost, NULL); 305b6aff669SJames Bottomley 306b6aff669SJames Bottomley return 0; 307b6aff669SJames Bottomley } 308b6aff669SJames Bottomley 309c7ebbbceSChristoph Hellwig static DECLARE_TRANSPORT_CLASS(sas_host_class, 310b6aff669SJames Bottomley "sas_host", sas_host_setup, sas_host_remove, NULL); 311c7ebbbceSChristoph Hellwig 312c7ebbbceSChristoph Hellwig static int sas_host_match(struct attribute_container *cont, 313c7ebbbceSChristoph Hellwig struct device *dev) 314c7ebbbceSChristoph Hellwig { 315c7ebbbceSChristoph Hellwig struct Scsi_Host *shost; 316c7ebbbceSChristoph Hellwig struct sas_internal *i; 317c7ebbbceSChristoph Hellwig 318c7ebbbceSChristoph Hellwig if (!scsi_is_host_device(dev)) 319c7ebbbceSChristoph Hellwig return 0; 320c7ebbbceSChristoph Hellwig shost = dev_to_shost(dev); 321c7ebbbceSChristoph Hellwig 322c7ebbbceSChristoph Hellwig if (!shost->transportt) 323c7ebbbceSChristoph Hellwig return 0; 324c7ebbbceSChristoph Hellwig if (shost->transportt->host_attrs.ac.class != 325c7ebbbceSChristoph Hellwig &sas_host_class.class) 326c7ebbbceSChristoph Hellwig return 0; 327c7ebbbceSChristoph Hellwig 328c7ebbbceSChristoph Hellwig i = to_sas_internal(shost->transportt); 329c7ebbbceSChristoph Hellwig return &i->t.host_attrs.ac == cont; 330c7ebbbceSChristoph Hellwig } 331c7ebbbceSChristoph Hellwig 332c7ebbbceSChristoph Hellwig static int do_sas_phy_delete(struct device *dev, void *data) 333c7ebbbceSChristoph Hellwig { 33465c92b09SJames Bottomley int pass = (int)(unsigned long)data; 33565c92b09SJames Bottomley 33665c92b09SJames Bottomley if (pass == 0 && scsi_is_sas_port(dev)) 33765c92b09SJames Bottomley sas_port_delete(dev_to_sas_port(dev)); 33865c92b09SJames Bottomley else if (pass == 1 && scsi_is_sas_phy(dev)) 339c7ebbbceSChristoph Hellwig sas_phy_delete(dev_to_phy(dev)); 340c7ebbbceSChristoph Hellwig return 0; 341c7ebbbceSChristoph Hellwig } 342c7ebbbceSChristoph Hellwig 343c7ebbbceSChristoph Hellwig /** 344eb44820cSRob Landley * sas_remove_children - tear down a devices SAS data structures 34565c92b09SJames Bottomley * @dev: device belonging to the sas object 34665c92b09SJames Bottomley * 34765c92b09SJames Bottomley * Removes all SAS PHYs and remote PHYs for a given object 34865c92b09SJames Bottomley */ 34965c92b09SJames Bottomley void sas_remove_children(struct device *dev) 35065c92b09SJames Bottomley { 35165c92b09SJames Bottomley device_for_each_child(dev, (void *)0, do_sas_phy_delete); 35265c92b09SJames Bottomley device_for_each_child(dev, (void *)1, do_sas_phy_delete); 35365c92b09SJames Bottomley } 35465c92b09SJames Bottomley EXPORT_SYMBOL(sas_remove_children); 35565c92b09SJames Bottomley 35665c92b09SJames Bottomley /** 357eb44820cSRob Landley * sas_remove_host - tear down a Scsi_Host's SAS data structures 358c7ebbbceSChristoph Hellwig * @shost: Scsi Host that is torn down 359c7ebbbceSChristoph Hellwig * 360c7ebbbceSChristoph Hellwig * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. 361c7ebbbceSChristoph Hellwig * Must be called just before scsi_remove_host for SAS HBAs. 362c7ebbbceSChristoph Hellwig */ 363c7ebbbceSChristoph Hellwig void sas_remove_host(struct Scsi_Host *shost) 364c7ebbbceSChristoph Hellwig { 36565c92b09SJames Bottomley sas_remove_children(&shost->shost_gendev); 366c7ebbbceSChristoph Hellwig } 367c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_remove_host); 368c7ebbbceSChristoph Hellwig 3690f88009dSJames Bottomley /** 3700f88009dSJames Bottomley * sas_tlr_supported - checking TLR bit in vpd 0x90 3710f88009dSJames Bottomley * @sdev: scsi device struct 3720f88009dSJames Bottomley * 3730f88009dSJames Bottomley * Check Transport Layer Retries are supported or not. 3740f88009dSJames Bottomley * If vpd page 0x90 is present, TRL is supported. 3750f88009dSJames Bottomley * 3760f88009dSJames Bottomley */ 3770f88009dSJames Bottomley unsigned int 3780f88009dSJames Bottomley sas_tlr_supported(struct scsi_device *sdev) 3790f88009dSJames Bottomley { 3800f88009dSJames Bottomley const int vpd_len = 32; 3810f88009dSJames Bottomley struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); 3820f88009dSJames Bottomley char *buffer = kzalloc(vpd_len, GFP_KERNEL); 3830f88009dSJames Bottomley int ret = 0; 3840f88009dSJames Bottomley 3850f88009dSJames Bottomley if (scsi_get_vpd_page(sdev, 0x90, buffer, vpd_len)) 3860f88009dSJames Bottomley goto out; 3870f88009dSJames Bottomley 3880f88009dSJames Bottomley /* 3890f88009dSJames Bottomley * Magic numbers: the VPD Protocol page (0x90) 3900f88009dSJames Bottomley * has a 4 byte header and then one entry per device port 3910f88009dSJames Bottomley * the TLR bit is at offset 8 on each port entry 3920f88009dSJames Bottomley * if we take the first port, that's at total offset 12 3930f88009dSJames Bottomley */ 3940f88009dSJames Bottomley ret = buffer[12] & 0x01; 3950f88009dSJames Bottomley 3960f88009dSJames Bottomley out: 3970f88009dSJames Bottomley kfree(buffer); 3980f88009dSJames Bottomley rdev->tlr_supported = ret; 3990f88009dSJames Bottomley return ret; 4000f88009dSJames Bottomley 4010f88009dSJames Bottomley } 4020f88009dSJames Bottomley EXPORT_SYMBOL_GPL(sas_tlr_supported); 4030f88009dSJames Bottomley 4040f88009dSJames Bottomley /** 4050f88009dSJames Bottomley * sas_disable_tlr - setting TLR flags 4060f88009dSJames Bottomley * @sdev: scsi device struct 4070f88009dSJames Bottomley * 4080f88009dSJames Bottomley * Seting tlr_enabled flag to 0. 4090f88009dSJames Bottomley * 4100f88009dSJames Bottomley */ 4110f88009dSJames Bottomley void 4120f88009dSJames Bottomley sas_disable_tlr(struct scsi_device *sdev) 4130f88009dSJames Bottomley { 4140f88009dSJames Bottomley struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); 4150f88009dSJames Bottomley 4160f88009dSJames Bottomley rdev->tlr_enabled = 0; 4170f88009dSJames Bottomley } 4180f88009dSJames Bottomley EXPORT_SYMBOL_GPL(sas_disable_tlr); 4190f88009dSJames Bottomley 4200f88009dSJames Bottomley /** 4210f88009dSJames Bottomley * sas_enable_tlr - setting TLR flags 4220f88009dSJames Bottomley * @sdev: scsi device struct 4230f88009dSJames Bottomley * 4240f88009dSJames Bottomley * Seting tlr_enabled flag 1. 4250f88009dSJames Bottomley * 4260f88009dSJames Bottomley */ 4270f88009dSJames Bottomley void sas_enable_tlr(struct scsi_device *sdev) 4280f88009dSJames Bottomley { 4290f88009dSJames Bottomley unsigned int tlr_supported = 0; 4300f88009dSJames Bottomley tlr_supported = sas_tlr_supported(sdev); 4310f88009dSJames Bottomley 4320f88009dSJames Bottomley if (tlr_supported) { 4330f88009dSJames Bottomley struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); 4340f88009dSJames Bottomley 4350f88009dSJames Bottomley rdev->tlr_enabled = 1; 4360f88009dSJames Bottomley } 4370f88009dSJames Bottomley 4380f88009dSJames Bottomley return; 4390f88009dSJames Bottomley } 4400f88009dSJames Bottomley EXPORT_SYMBOL_GPL(sas_enable_tlr); 4410f88009dSJames Bottomley 4420f88009dSJames Bottomley unsigned int sas_is_tlr_enabled(struct scsi_device *sdev) 4430f88009dSJames Bottomley { 4440f88009dSJames Bottomley struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); 4450f88009dSJames Bottomley return rdev->tlr_enabled; 4460f88009dSJames Bottomley } 4470f88009dSJames Bottomley EXPORT_SYMBOL_GPL(sas_is_tlr_enabled); 448c7ebbbceSChristoph Hellwig 449c7ebbbceSChristoph Hellwig /* 45065c92b09SJames Bottomley * SAS Phy attributes 451c7ebbbceSChristoph Hellwig */ 452c7ebbbceSChristoph Hellwig 453c7ebbbceSChristoph Hellwig #define sas_phy_show_simple(field, name, format_string, cast) \ 454c7ebbbceSChristoph Hellwig static ssize_t \ 455ee959b00STony Jones show_sas_phy_##name(struct device *dev, \ 456ee959b00STony Jones struct device_attribute *attr, char *buf) \ 457c7ebbbceSChristoph Hellwig { \ 458ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); \ 459c7ebbbceSChristoph Hellwig \ 460c7ebbbceSChristoph Hellwig return snprintf(buf, 20, format_string, cast phy->field); \ 461c7ebbbceSChristoph Hellwig } 462c7ebbbceSChristoph Hellwig 463c7ebbbceSChristoph Hellwig #define sas_phy_simple_attr(field, name, format_string, type) \ 464c7ebbbceSChristoph Hellwig sas_phy_show_simple(field, name, format_string, (type)) \ 465ee959b00STony Jones static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) 466c7ebbbceSChristoph Hellwig 467c7ebbbceSChristoph Hellwig #define sas_phy_show_protocol(field, name) \ 468c7ebbbceSChristoph Hellwig static ssize_t \ 469ee959b00STony Jones show_sas_phy_##name(struct device *dev, \ 470ee959b00STony Jones struct device_attribute *attr, char *buf) \ 471c7ebbbceSChristoph Hellwig { \ 472ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); \ 473c7ebbbceSChristoph Hellwig \ 474c7ebbbceSChristoph Hellwig if (!phy->field) \ 475c7ebbbceSChristoph Hellwig return snprintf(buf, 20, "none\n"); \ 476c7ebbbceSChristoph Hellwig return get_sas_protocol_names(phy->field, buf); \ 477c7ebbbceSChristoph Hellwig } 478c7ebbbceSChristoph Hellwig 479c7ebbbceSChristoph Hellwig #define sas_phy_protocol_attr(field, name) \ 480c7ebbbceSChristoph Hellwig sas_phy_show_protocol(field, name) \ 481ee959b00STony Jones static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) 482c7ebbbceSChristoph Hellwig 483c7ebbbceSChristoph Hellwig #define sas_phy_show_linkspeed(field) \ 484c7ebbbceSChristoph Hellwig static ssize_t \ 485ee959b00STony Jones show_sas_phy_##field(struct device *dev, \ 486ee959b00STony Jones struct device_attribute *attr, char *buf) \ 487c7ebbbceSChristoph Hellwig { \ 488ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); \ 489c7ebbbceSChristoph Hellwig \ 490c7ebbbceSChristoph Hellwig return get_sas_linkspeed_names(phy->field, buf); \ 491c7ebbbceSChristoph Hellwig } 492c7ebbbceSChristoph Hellwig 493d24e1eebSJames Bottomley /* Fudge to tell if we're minimum or maximum */ 494d24e1eebSJames Bottomley #define sas_phy_store_linkspeed(field) \ 495d24e1eebSJames Bottomley static ssize_t \ 496ee959b00STony Jones store_sas_phy_##field(struct device *dev, \ 497ee959b00STony Jones struct device_attribute *attr, \ 498ee959b00STony Jones const char *buf, size_t count) \ 499d24e1eebSJames Bottomley { \ 500ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); \ 501d24e1eebSJames Bottomley struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ 502d24e1eebSJames Bottomley struct sas_internal *i = to_sas_internal(shost->transportt); \ 503d24e1eebSJames Bottomley u32 value; \ 504d24e1eebSJames Bottomley struct sas_phy_linkrates rates = {0}; \ 505d24e1eebSJames Bottomley int error; \ 506d24e1eebSJames Bottomley \ 507d24e1eebSJames Bottomley error = set_sas_linkspeed_names(&value, buf); \ 508d24e1eebSJames Bottomley if (error) \ 509d24e1eebSJames Bottomley return error; \ 510d24e1eebSJames Bottomley rates.field = value; \ 511d24e1eebSJames Bottomley error = i->f->set_phy_speed(phy, &rates); \ 512d24e1eebSJames Bottomley \ 513d24e1eebSJames Bottomley return error ? error : count; \ 514d24e1eebSJames Bottomley } 515d24e1eebSJames Bottomley 516d24e1eebSJames Bottomley #define sas_phy_linkspeed_rw_attr(field) \ 517d24e1eebSJames Bottomley sas_phy_show_linkspeed(field) \ 518d24e1eebSJames Bottomley sas_phy_store_linkspeed(field) \ 519ee959b00STony Jones static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ 520d24e1eebSJames Bottomley store_sas_phy_##field) 521d24e1eebSJames Bottomley 522c7ebbbceSChristoph Hellwig #define sas_phy_linkspeed_attr(field) \ 523c7ebbbceSChristoph Hellwig sas_phy_show_linkspeed(field) \ 524ee959b00STony Jones static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) 525c7ebbbceSChristoph Hellwig 526d24e1eebSJames Bottomley 527c3ee74c4SChristoph Hellwig #define sas_phy_show_linkerror(field) \ 528c3ee74c4SChristoph Hellwig static ssize_t \ 529ee959b00STony Jones show_sas_phy_##field(struct device *dev, \ 530ee959b00STony Jones struct device_attribute *attr, char *buf) \ 531c3ee74c4SChristoph Hellwig { \ 532ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); \ 533c3ee74c4SChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ 534c3ee74c4SChristoph Hellwig struct sas_internal *i = to_sas_internal(shost->transportt); \ 535c3ee74c4SChristoph Hellwig int error; \ 536c3ee74c4SChristoph Hellwig \ 537dd9fbb52SJames Bottomley error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ 538c3ee74c4SChristoph Hellwig if (error) \ 539c3ee74c4SChristoph Hellwig return error; \ 540c3ee74c4SChristoph Hellwig return snprintf(buf, 20, "%u\n", phy->field); \ 541c3ee74c4SChristoph Hellwig } 542c3ee74c4SChristoph Hellwig 543c3ee74c4SChristoph Hellwig #define sas_phy_linkerror_attr(field) \ 544c3ee74c4SChristoph Hellwig sas_phy_show_linkerror(field) \ 545ee959b00STony Jones static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) 546c3ee74c4SChristoph Hellwig 547c3ee74c4SChristoph Hellwig 548c7ebbbceSChristoph Hellwig static ssize_t 549ee959b00STony Jones show_sas_device_type(struct device *dev, 550ee959b00STony Jones struct device_attribute *attr, char *buf) 551c7ebbbceSChristoph Hellwig { 552ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); 553c7ebbbceSChristoph Hellwig 554c7ebbbceSChristoph Hellwig if (!phy->identify.device_type) 555c7ebbbceSChristoph Hellwig return snprintf(buf, 20, "none\n"); 556c7ebbbceSChristoph Hellwig return get_sas_device_type_names(phy->identify.device_type, buf); 557c7ebbbceSChristoph Hellwig } 558ee959b00STony Jones static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); 559c7ebbbceSChristoph Hellwig 560ee959b00STony Jones static ssize_t do_sas_phy_enable(struct device *dev, 561acbf167dSDarrick J. Wong size_t count, int enable) 562acbf167dSDarrick J. Wong { 563ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); 564acbf167dSDarrick J. Wong struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 565acbf167dSDarrick J. Wong struct sas_internal *i = to_sas_internal(shost->transportt); 566acbf167dSDarrick J. Wong int error; 567acbf167dSDarrick J. Wong 568acbf167dSDarrick J. Wong error = i->f->phy_enable(phy, enable); 569acbf167dSDarrick J. Wong if (error) 570acbf167dSDarrick J. Wong return error; 571acbf167dSDarrick J. Wong phy->enabled = enable; 572acbf167dSDarrick J. Wong return count; 573acbf167dSDarrick J. Wong }; 574acbf167dSDarrick J. Wong 575ee959b00STony Jones static ssize_t 576ee959b00STony Jones store_sas_phy_enable(struct device *dev, struct device_attribute *attr, 577acbf167dSDarrick J. Wong const char *buf, size_t count) 578acbf167dSDarrick J. Wong { 579acbf167dSDarrick J. Wong if (count < 1) 580acbf167dSDarrick J. Wong return -EINVAL; 581acbf167dSDarrick J. Wong 582acbf167dSDarrick J. Wong switch (buf[0]) { 583acbf167dSDarrick J. Wong case '0': 584ee959b00STony Jones do_sas_phy_enable(dev, count, 0); 585acbf167dSDarrick J. Wong break; 586acbf167dSDarrick J. Wong case '1': 587ee959b00STony Jones do_sas_phy_enable(dev, count, 1); 588acbf167dSDarrick J. Wong break; 589acbf167dSDarrick J. Wong default: 590acbf167dSDarrick J. Wong return -EINVAL; 591acbf167dSDarrick J. Wong } 592acbf167dSDarrick J. Wong 593acbf167dSDarrick J. Wong return count; 594acbf167dSDarrick J. Wong } 595acbf167dSDarrick J. Wong 596ee959b00STony Jones static ssize_t 597ee959b00STony Jones show_sas_phy_enable(struct device *dev, struct device_attribute *attr, 598ee959b00STony Jones char *buf) 599acbf167dSDarrick J. Wong { 600ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); 601acbf167dSDarrick J. Wong 602acbf167dSDarrick J. Wong return snprintf(buf, 20, "%d", phy->enabled); 603acbf167dSDarrick J. Wong } 604acbf167dSDarrick J. Wong 605ee959b00STony Jones static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, 606acbf167dSDarrick J. Wong store_sas_phy_enable); 607acbf167dSDarrick J. Wong 608ee959b00STony Jones static ssize_t 609ee959b00STony Jones do_sas_phy_reset(struct device *dev, size_t count, int hard_reset) 61007ba3a95SChristoph Hellwig { 611ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); 61207ba3a95SChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 61307ba3a95SChristoph Hellwig struct sas_internal *i = to_sas_internal(shost->transportt); 61407ba3a95SChristoph Hellwig int error; 61507ba3a95SChristoph Hellwig 61607ba3a95SChristoph Hellwig error = i->f->phy_reset(phy, hard_reset); 61707ba3a95SChristoph Hellwig if (error) 61807ba3a95SChristoph Hellwig return error; 61916d3db1bSDan Williams phy->enabled = 1; 62007ba3a95SChristoph Hellwig return count; 62107ba3a95SChristoph Hellwig }; 62207ba3a95SChristoph Hellwig 623ee959b00STony Jones static ssize_t 624ee959b00STony Jones store_sas_link_reset(struct device *dev, struct device_attribute *attr, 62507ba3a95SChristoph Hellwig const char *buf, size_t count) 62607ba3a95SChristoph Hellwig { 627ee959b00STony Jones return do_sas_phy_reset(dev, count, 0); 62807ba3a95SChristoph Hellwig } 629ee959b00STony Jones static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); 63007ba3a95SChristoph Hellwig 631ee959b00STony Jones static ssize_t 632ee959b00STony Jones store_sas_hard_reset(struct device *dev, struct device_attribute *attr, 63307ba3a95SChristoph Hellwig const char *buf, size_t count) 63407ba3a95SChristoph Hellwig { 635ee959b00STony Jones return do_sas_phy_reset(dev, count, 1); 63607ba3a95SChristoph Hellwig } 637ee959b00STony Jones static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); 63807ba3a95SChristoph Hellwig 639c7ebbbceSChristoph Hellwig sas_phy_protocol_attr(identify.initiator_port_protocols, 640c7ebbbceSChristoph Hellwig initiator_port_protocols); 641c7ebbbceSChristoph Hellwig sas_phy_protocol_attr(identify.target_port_protocols, 642c7ebbbceSChristoph Hellwig target_port_protocols); 643c7ebbbceSChristoph Hellwig sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", 644c7ebbbceSChristoph Hellwig unsigned long long); 645c7ebbbceSChristoph Hellwig sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); 646c9fefeb2SJames Bottomley //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); 647c7ebbbceSChristoph Hellwig sas_phy_linkspeed_attr(negotiated_linkrate); 648c7ebbbceSChristoph Hellwig sas_phy_linkspeed_attr(minimum_linkrate_hw); 649d24e1eebSJames Bottomley sas_phy_linkspeed_rw_attr(minimum_linkrate); 650c7ebbbceSChristoph Hellwig sas_phy_linkspeed_attr(maximum_linkrate_hw); 651d24e1eebSJames Bottomley sas_phy_linkspeed_rw_attr(maximum_linkrate); 652c3ee74c4SChristoph Hellwig sas_phy_linkerror_attr(invalid_dword_count); 653c3ee74c4SChristoph Hellwig sas_phy_linkerror_attr(running_disparity_error_count); 654c3ee74c4SChristoph Hellwig sas_phy_linkerror_attr(loss_of_dword_sync_count); 655c3ee74c4SChristoph Hellwig sas_phy_linkerror_attr(phy_reset_problem_count); 656c7ebbbceSChristoph Hellwig 6570b3e09daSDan Williams static int sas_phy_setup(struct transport_container *tc, struct device *dev, 6580b3e09daSDan Williams struct device *cdev) 6590b3e09daSDan Williams { 6600b3e09daSDan Williams struct sas_phy *phy = dev_to_phy(dev); 6610b3e09daSDan Williams struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 6620b3e09daSDan Williams struct sas_internal *i = to_sas_internal(shost->transportt); 6630b3e09daSDan Williams 6640b3e09daSDan Williams if (i->f->phy_setup) 6650b3e09daSDan Williams i->f->phy_setup(phy); 6660b3e09daSDan Williams 6670b3e09daSDan Williams return 0; 6680b3e09daSDan Williams } 669c7ebbbceSChristoph Hellwig 670c7ebbbceSChristoph Hellwig static DECLARE_TRANSPORT_CLASS(sas_phy_class, 6710b3e09daSDan Williams "sas_phy", sas_phy_setup, NULL, NULL); 672c7ebbbceSChristoph Hellwig 673c7ebbbceSChristoph Hellwig static int sas_phy_match(struct attribute_container *cont, struct device *dev) 674c7ebbbceSChristoph Hellwig { 675c7ebbbceSChristoph Hellwig struct Scsi_Host *shost; 676c7ebbbceSChristoph Hellwig struct sas_internal *i; 677c7ebbbceSChristoph Hellwig 678c7ebbbceSChristoph Hellwig if (!scsi_is_sas_phy(dev)) 679c7ebbbceSChristoph Hellwig return 0; 680c7ebbbceSChristoph Hellwig shost = dev_to_shost(dev->parent); 681c7ebbbceSChristoph Hellwig 682c7ebbbceSChristoph Hellwig if (!shost->transportt) 683c7ebbbceSChristoph Hellwig return 0; 684c7ebbbceSChristoph Hellwig if (shost->transportt->host_attrs.ac.class != 685c7ebbbceSChristoph Hellwig &sas_host_class.class) 686c7ebbbceSChristoph Hellwig return 0; 687c7ebbbceSChristoph Hellwig 688c7ebbbceSChristoph Hellwig i = to_sas_internal(shost->transportt); 689c7ebbbceSChristoph Hellwig return &i->phy_attr_cont.ac == cont; 690c7ebbbceSChristoph Hellwig } 691c7ebbbceSChristoph Hellwig 692c7ebbbceSChristoph Hellwig static void sas_phy_release(struct device *dev) 693c7ebbbceSChristoph Hellwig { 694c7ebbbceSChristoph Hellwig struct sas_phy *phy = dev_to_phy(dev); 6950b3e09daSDan Williams struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 6960b3e09daSDan Williams struct sas_internal *i = to_sas_internal(shost->transportt); 697c7ebbbceSChristoph Hellwig 6980b3e09daSDan Williams if (i->f->phy_release) 6990b3e09daSDan Williams i->f->phy_release(phy); 700c7ebbbceSChristoph Hellwig put_device(dev->parent); 701c7ebbbceSChristoph Hellwig kfree(phy); 702c7ebbbceSChristoph Hellwig } 703c7ebbbceSChristoph Hellwig 704c7ebbbceSChristoph Hellwig /** 705eb44820cSRob Landley * sas_phy_alloc - allocates and initialize a SAS PHY structure 706c7ebbbceSChristoph Hellwig * @parent: Parent device 707d99ca418SMoore, Eric * @number: Phy index 708c7ebbbceSChristoph Hellwig * 709c7ebbbceSChristoph Hellwig * Allocates an SAS PHY structure. It will be added in the device tree 710c7ebbbceSChristoph Hellwig * below the device specified by @parent, which has to be either a Scsi_Host 711c7ebbbceSChristoph Hellwig * or sas_rphy. 712c7ebbbceSChristoph Hellwig * 713c7ebbbceSChristoph Hellwig * Returns: 714c7ebbbceSChristoph Hellwig * SAS PHY allocated or %NULL if the allocation failed. 715c7ebbbceSChristoph Hellwig */ 716c7ebbbceSChristoph Hellwig struct sas_phy *sas_phy_alloc(struct device *parent, int number) 717c7ebbbceSChristoph Hellwig { 718c7ebbbceSChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(parent); 719c7ebbbceSChristoph Hellwig struct sas_phy *phy; 720c7ebbbceSChristoph Hellwig 72124669f75SJes Sorensen phy = kzalloc(sizeof(*phy), GFP_KERNEL); 722c7ebbbceSChristoph Hellwig if (!phy) 723c7ebbbceSChristoph Hellwig return NULL; 724c7ebbbceSChristoph Hellwig 725c7ebbbceSChristoph Hellwig phy->number = number; 726acbf167dSDarrick J. Wong phy->enabled = 1; 727c7ebbbceSChristoph Hellwig 728c7ebbbceSChristoph Hellwig device_initialize(&phy->dev); 729c7ebbbceSChristoph Hellwig phy->dev.parent = get_device(parent); 730c7ebbbceSChristoph Hellwig phy->dev.release = sas_phy_release; 73165c92b09SJames Bottomley INIT_LIST_HEAD(&phy->port_siblings); 73279cb1819SJames Bottomley if (scsi_is_sas_expander_device(parent)) { 73379cb1819SJames Bottomley struct sas_rphy *rphy = dev_to_rphy(parent); 73471610f55SKay Sievers dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no, 73579cb1819SJames Bottomley rphy->scsi_target_id, number); 73679cb1819SJames Bottomley } else 73771610f55SKay Sievers dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number); 738c7ebbbceSChristoph Hellwig 739c7ebbbceSChristoph Hellwig transport_setup_device(&phy->dev); 740c7ebbbceSChristoph Hellwig 741c7ebbbceSChristoph Hellwig return phy; 742c7ebbbceSChristoph Hellwig } 743c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_phy_alloc); 744c7ebbbceSChristoph Hellwig 745c7ebbbceSChristoph Hellwig /** 746eb44820cSRob Landley * sas_phy_add - add a SAS PHY to the device hierarchy 747c7ebbbceSChristoph Hellwig * @phy: The PHY to be added 748c7ebbbceSChristoph Hellwig * 749c7ebbbceSChristoph Hellwig * Publishes a SAS PHY to the rest of the system. 750c7ebbbceSChristoph Hellwig */ 751c7ebbbceSChristoph Hellwig int sas_phy_add(struct sas_phy *phy) 752c7ebbbceSChristoph Hellwig { 753c7ebbbceSChristoph Hellwig int error; 754c7ebbbceSChristoph Hellwig 755c7ebbbceSChristoph Hellwig error = device_add(&phy->dev); 756c7ebbbceSChristoph Hellwig if (!error) { 757c7ebbbceSChristoph Hellwig transport_add_device(&phy->dev); 758c7ebbbceSChristoph Hellwig transport_configure_device(&phy->dev); 759c7ebbbceSChristoph Hellwig } 760c7ebbbceSChristoph Hellwig 761c7ebbbceSChristoph Hellwig return error; 762c7ebbbceSChristoph Hellwig } 763c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_phy_add); 764c7ebbbceSChristoph Hellwig 765c7ebbbceSChristoph Hellwig /** 766eb44820cSRob Landley * sas_phy_free - free a SAS PHY 767c7ebbbceSChristoph Hellwig * @phy: SAS PHY to free 768c7ebbbceSChristoph Hellwig * 769c7ebbbceSChristoph Hellwig * Frees the specified SAS PHY. 770c7ebbbceSChristoph Hellwig * 771c7ebbbceSChristoph Hellwig * Note: 772c7ebbbceSChristoph Hellwig * This function must only be called on a PHY that has not 773af901ca1SAndré Goddard Rosa * successfully been added using sas_phy_add(). 774c7ebbbceSChristoph Hellwig */ 775c7ebbbceSChristoph Hellwig void sas_phy_free(struct sas_phy *phy) 776c7ebbbceSChristoph Hellwig { 777c7ebbbceSChristoph Hellwig transport_destroy_device(&phy->dev); 77892aab646SMike Anderson put_device(&phy->dev); 779c7ebbbceSChristoph Hellwig } 780c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_phy_free); 781c7ebbbceSChristoph Hellwig 782c7ebbbceSChristoph Hellwig /** 783eb44820cSRob Landley * sas_phy_delete - remove SAS PHY 784c7ebbbceSChristoph Hellwig * @phy: SAS PHY to remove 785c7ebbbceSChristoph Hellwig * 786c7ebbbceSChristoph Hellwig * Removes the specified SAS PHY. If the SAS PHY has an 787c7ebbbceSChristoph Hellwig * associated remote PHY it is removed before. 788c7ebbbceSChristoph Hellwig */ 789c7ebbbceSChristoph Hellwig void 790c7ebbbceSChristoph Hellwig sas_phy_delete(struct sas_phy *phy) 791c7ebbbceSChristoph Hellwig { 792c7ebbbceSChristoph Hellwig struct device *dev = &phy->dev; 793c7ebbbceSChristoph Hellwig 79465c92b09SJames Bottomley /* this happens if the phy is still part of a port when deleted */ 79565c92b09SJames Bottomley BUG_ON(!list_empty(&phy->port_siblings)); 796c7ebbbceSChristoph Hellwig 797c7ebbbceSChristoph Hellwig transport_remove_device(dev); 798c7ebbbceSChristoph Hellwig device_del(dev); 799c7ebbbceSChristoph Hellwig transport_destroy_device(dev); 80092aab646SMike Anderson put_device(dev); 801c7ebbbceSChristoph Hellwig } 802c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_phy_delete); 803c7ebbbceSChristoph Hellwig 804c7ebbbceSChristoph Hellwig /** 805eb44820cSRob Landley * scsi_is_sas_phy - check if a struct device represents a SAS PHY 806c7ebbbceSChristoph Hellwig * @dev: device to check 807c7ebbbceSChristoph Hellwig * 808c7ebbbceSChristoph Hellwig * Returns: 809c7ebbbceSChristoph Hellwig * %1 if the device represents a SAS PHY, %0 else 810c7ebbbceSChristoph Hellwig */ 811c7ebbbceSChristoph Hellwig int scsi_is_sas_phy(const struct device *dev) 812c7ebbbceSChristoph Hellwig { 813c7ebbbceSChristoph Hellwig return dev->release == sas_phy_release; 814c7ebbbceSChristoph Hellwig } 815c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(scsi_is_sas_phy); 816c7ebbbceSChristoph Hellwig 817c7ebbbceSChristoph Hellwig /* 81865c92b09SJames Bottomley * SAS Port attributes 81965c92b09SJames Bottomley */ 82065c92b09SJames Bottomley #define sas_port_show_simple(field, name, format_string, cast) \ 82165c92b09SJames Bottomley static ssize_t \ 822ee959b00STony Jones show_sas_port_##name(struct device *dev, \ 823ee959b00STony Jones struct device_attribute *attr, char *buf) \ 82465c92b09SJames Bottomley { \ 825ee959b00STony Jones struct sas_port *port = transport_class_to_sas_port(dev); \ 82665c92b09SJames Bottomley \ 82765c92b09SJames Bottomley return snprintf(buf, 20, format_string, cast port->field); \ 82865c92b09SJames Bottomley } 82965c92b09SJames Bottomley 83065c92b09SJames Bottomley #define sas_port_simple_attr(field, name, format_string, type) \ 83165c92b09SJames Bottomley sas_port_show_simple(field, name, format_string, (type)) \ 832ee959b00STony Jones static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) 83365c92b09SJames Bottomley 83465c92b09SJames Bottomley sas_port_simple_attr(num_phys, num_phys, "%d\n", int); 83565c92b09SJames Bottomley 83665c92b09SJames Bottomley static DECLARE_TRANSPORT_CLASS(sas_port_class, 83765c92b09SJames Bottomley "sas_port", NULL, NULL, NULL); 83865c92b09SJames Bottomley 83965c92b09SJames Bottomley static int sas_port_match(struct attribute_container *cont, struct device *dev) 84065c92b09SJames Bottomley { 84165c92b09SJames Bottomley struct Scsi_Host *shost; 84265c92b09SJames Bottomley struct sas_internal *i; 84365c92b09SJames Bottomley 84465c92b09SJames Bottomley if (!scsi_is_sas_port(dev)) 84565c92b09SJames Bottomley return 0; 84665c92b09SJames Bottomley shost = dev_to_shost(dev->parent); 84765c92b09SJames Bottomley 84865c92b09SJames Bottomley if (!shost->transportt) 84965c92b09SJames Bottomley return 0; 85065c92b09SJames Bottomley if (shost->transportt->host_attrs.ac.class != 85165c92b09SJames Bottomley &sas_host_class.class) 85265c92b09SJames Bottomley return 0; 85365c92b09SJames Bottomley 85465c92b09SJames Bottomley i = to_sas_internal(shost->transportt); 85565c92b09SJames Bottomley return &i->port_attr_cont.ac == cont; 85665c92b09SJames Bottomley } 85765c92b09SJames Bottomley 85865c92b09SJames Bottomley 85965c92b09SJames Bottomley static void sas_port_release(struct device *dev) 86065c92b09SJames Bottomley { 86165c92b09SJames Bottomley struct sas_port *port = dev_to_sas_port(dev); 86265c92b09SJames Bottomley 86365c92b09SJames Bottomley BUG_ON(!list_empty(&port->phy_list)); 86465c92b09SJames Bottomley 86565c92b09SJames Bottomley put_device(dev->parent); 86665c92b09SJames Bottomley kfree(port); 86765c92b09SJames Bottomley } 86865c92b09SJames Bottomley 86965c92b09SJames Bottomley static void sas_port_create_link(struct sas_port *port, 87065c92b09SJames Bottomley struct sas_phy *phy) 87165c92b09SJames Bottomley { 87221434966SDarrick J. Wong int res; 87321434966SDarrick J. Wong 87421434966SDarrick J. Wong res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, 87571610f55SKay Sievers dev_name(&phy->dev)); 87621434966SDarrick J. Wong if (res) 87721434966SDarrick J. Wong goto err; 87821434966SDarrick J. Wong res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); 87921434966SDarrick J. Wong if (res) 88021434966SDarrick J. Wong goto err; 88121434966SDarrick J. Wong return; 88221434966SDarrick J. Wong err: 88321434966SDarrick J. Wong printk(KERN_ERR "%s: Cannot create port links, err=%d\n", 884cadbd4a5SHarvey Harrison __func__, res); 88565c92b09SJames Bottomley } 88665c92b09SJames Bottomley 88765c92b09SJames Bottomley static void sas_port_delete_link(struct sas_port *port, 88865c92b09SJames Bottomley struct sas_phy *phy) 88965c92b09SJames Bottomley { 89071610f55SKay Sievers sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev)); 89165c92b09SJames Bottomley sysfs_remove_link(&phy->dev.kobj, "port"); 89265c92b09SJames Bottomley } 89365c92b09SJames Bottomley 89465c92b09SJames Bottomley /** sas_port_alloc - allocate and initialize a SAS port structure 89565c92b09SJames Bottomley * 89665c92b09SJames Bottomley * @parent: parent device 89765c92b09SJames Bottomley * @port_id: port number 89865c92b09SJames Bottomley * 89965c92b09SJames Bottomley * Allocates a SAS port structure. It will be added to the device tree 90065c92b09SJames Bottomley * below the device specified by @parent which must be either a Scsi_Host 90165c92b09SJames Bottomley * or a sas_expander_device. 90265c92b09SJames Bottomley * 90365c92b09SJames Bottomley * Returns %NULL on error 90465c92b09SJames Bottomley */ 90565c92b09SJames Bottomley struct sas_port *sas_port_alloc(struct device *parent, int port_id) 90665c92b09SJames Bottomley { 90765c92b09SJames Bottomley struct Scsi_Host *shost = dev_to_shost(parent); 90865c92b09SJames Bottomley struct sas_port *port; 90965c92b09SJames Bottomley 91065c92b09SJames Bottomley port = kzalloc(sizeof(*port), GFP_KERNEL); 91165c92b09SJames Bottomley if (!port) 91265c92b09SJames Bottomley return NULL; 91365c92b09SJames Bottomley 91465c92b09SJames Bottomley port->port_identifier = port_id; 91565c92b09SJames Bottomley 91665c92b09SJames Bottomley device_initialize(&port->dev); 91765c92b09SJames Bottomley 91865c92b09SJames Bottomley port->dev.parent = get_device(parent); 91965c92b09SJames Bottomley port->dev.release = sas_port_release; 92065c92b09SJames Bottomley 92165c92b09SJames Bottomley mutex_init(&port->phy_list_mutex); 92265c92b09SJames Bottomley INIT_LIST_HEAD(&port->phy_list); 92365c92b09SJames Bottomley 92465c92b09SJames Bottomley if (scsi_is_sas_expander_device(parent)) { 92565c92b09SJames Bottomley struct sas_rphy *rphy = dev_to_rphy(parent); 92671610f55SKay Sievers dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no, 92765c92b09SJames Bottomley rphy->scsi_target_id, port->port_identifier); 92865c92b09SJames Bottomley } else 92971610f55SKay Sievers dev_set_name(&port->dev, "port-%d:%d", shost->host_no, 93065c92b09SJames Bottomley port->port_identifier); 93165c92b09SJames Bottomley 93265c92b09SJames Bottomley transport_setup_device(&port->dev); 93365c92b09SJames Bottomley 93465c92b09SJames Bottomley return port; 93565c92b09SJames Bottomley } 93665c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_alloc); 93765c92b09SJames Bottomley 938c9fefeb2SJames Bottomley /** sas_port_alloc_num - allocate and initialize a SAS port structure 939c9fefeb2SJames Bottomley * 940c9fefeb2SJames Bottomley * @parent: parent device 941c9fefeb2SJames Bottomley * 942c9fefeb2SJames Bottomley * Allocates a SAS port structure and a number to go with it. This 943c9fefeb2SJames Bottomley * interface is really for adapters where the port number has no 944c9fefeb2SJames Bottomley * meansing, so the sas class should manage them. It will be added to 945c9fefeb2SJames Bottomley * the device tree below the device specified by @parent which must be 946c9fefeb2SJames Bottomley * either a Scsi_Host or a sas_expander_device. 947c9fefeb2SJames Bottomley * 948c9fefeb2SJames Bottomley * Returns %NULL on error 949c9fefeb2SJames Bottomley */ 950c9fefeb2SJames Bottomley struct sas_port *sas_port_alloc_num(struct device *parent) 951c9fefeb2SJames Bottomley { 952c9fefeb2SJames Bottomley int index; 953c9fefeb2SJames Bottomley struct Scsi_Host *shost = dev_to_shost(parent); 954c9fefeb2SJames Bottomley struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 955c9fefeb2SJames Bottomley 956c9fefeb2SJames Bottomley /* FIXME: use idr for this eventually */ 957c9fefeb2SJames Bottomley mutex_lock(&sas_host->lock); 958c9fefeb2SJames Bottomley if (scsi_is_sas_expander_device(parent)) { 959c9fefeb2SJames Bottomley struct sas_rphy *rphy = dev_to_rphy(parent); 960c9fefeb2SJames Bottomley struct sas_expander_device *exp = rphy_to_expander_device(rphy); 961c9fefeb2SJames Bottomley 962c9fefeb2SJames Bottomley index = exp->next_port_id++; 963c9fefeb2SJames Bottomley } else 964c9fefeb2SJames Bottomley index = sas_host->next_port_id++; 965c9fefeb2SJames Bottomley mutex_unlock(&sas_host->lock); 966c9fefeb2SJames Bottomley return sas_port_alloc(parent, index); 967c9fefeb2SJames Bottomley } 968c9fefeb2SJames Bottomley EXPORT_SYMBOL(sas_port_alloc_num); 969c9fefeb2SJames Bottomley 97065c92b09SJames Bottomley /** 97165c92b09SJames Bottomley * sas_port_add - add a SAS port to the device hierarchy 97265c92b09SJames Bottomley * @port: port to be added 97365c92b09SJames Bottomley * 97465c92b09SJames Bottomley * publishes a port to the rest of the system 97565c92b09SJames Bottomley */ 97665c92b09SJames Bottomley int sas_port_add(struct sas_port *port) 97765c92b09SJames Bottomley { 97865c92b09SJames Bottomley int error; 97965c92b09SJames Bottomley 98065c92b09SJames Bottomley /* No phys should be added until this is made visible */ 98165c92b09SJames Bottomley BUG_ON(!list_empty(&port->phy_list)); 98265c92b09SJames Bottomley 98365c92b09SJames Bottomley error = device_add(&port->dev); 98465c92b09SJames Bottomley 98565c92b09SJames Bottomley if (error) 98665c92b09SJames Bottomley return error; 98765c92b09SJames Bottomley 98865c92b09SJames Bottomley transport_add_device(&port->dev); 98965c92b09SJames Bottomley transport_configure_device(&port->dev); 99065c92b09SJames Bottomley 99165c92b09SJames Bottomley return 0; 99265c92b09SJames Bottomley } 99365c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_add); 99465c92b09SJames Bottomley 99565c92b09SJames Bottomley /** 996eb44820cSRob Landley * sas_port_free - free a SAS PORT 99765c92b09SJames Bottomley * @port: SAS PORT to free 99865c92b09SJames Bottomley * 99965c92b09SJames Bottomley * Frees the specified SAS PORT. 100065c92b09SJames Bottomley * 100165c92b09SJames Bottomley * Note: 100265c92b09SJames Bottomley * This function must only be called on a PORT that has not 1003af901ca1SAndré Goddard Rosa * successfully been added using sas_port_add(). 100465c92b09SJames Bottomley */ 100565c92b09SJames Bottomley void sas_port_free(struct sas_port *port) 100665c92b09SJames Bottomley { 100765c92b09SJames Bottomley transport_destroy_device(&port->dev); 100865c92b09SJames Bottomley put_device(&port->dev); 100965c92b09SJames Bottomley } 101065c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_free); 101165c92b09SJames Bottomley 101265c92b09SJames Bottomley /** 1013eb44820cSRob Landley * sas_port_delete - remove SAS PORT 101465c92b09SJames Bottomley * @port: SAS PORT to remove 101565c92b09SJames Bottomley * 101665c92b09SJames Bottomley * Removes the specified SAS PORT. If the SAS PORT has an 101765c92b09SJames Bottomley * associated phys, unlink them from the port as well. 101865c92b09SJames Bottomley */ 101965c92b09SJames Bottomley void sas_port_delete(struct sas_port *port) 102065c92b09SJames Bottomley { 102165c92b09SJames Bottomley struct device *dev = &port->dev; 102265c92b09SJames Bottomley struct sas_phy *phy, *tmp_phy; 102365c92b09SJames Bottomley 102465c92b09SJames Bottomley if (port->rphy) { 102565c92b09SJames Bottomley sas_rphy_delete(port->rphy); 102665c92b09SJames Bottomley port->rphy = NULL; 102765c92b09SJames Bottomley } 102865c92b09SJames Bottomley 102965c92b09SJames Bottomley mutex_lock(&port->phy_list_mutex); 103065c92b09SJames Bottomley list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, 103165c92b09SJames Bottomley port_siblings) { 103265c92b09SJames Bottomley sas_port_delete_link(port, phy); 103365c92b09SJames Bottomley list_del_init(&phy->port_siblings); 103465c92b09SJames Bottomley } 103565c92b09SJames Bottomley mutex_unlock(&port->phy_list_mutex); 103665c92b09SJames Bottomley 1037a0e1b6efSJames Bottomley if (port->is_backlink) { 1038a0e1b6efSJames Bottomley struct device *parent = port->dev.parent; 1039a0e1b6efSJames Bottomley 104071610f55SKay Sievers sysfs_remove_link(&port->dev.kobj, dev_name(parent)); 1041a0e1b6efSJames Bottomley port->is_backlink = 0; 1042a0e1b6efSJames Bottomley } 1043a0e1b6efSJames Bottomley 104465c92b09SJames Bottomley transport_remove_device(dev); 104565c92b09SJames Bottomley device_del(dev); 104665c92b09SJames Bottomley transport_destroy_device(dev); 104765c92b09SJames Bottomley put_device(dev); 104865c92b09SJames Bottomley } 104965c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_delete); 105065c92b09SJames Bottomley 105165c92b09SJames Bottomley /** 1052eb44820cSRob Landley * scsi_is_sas_port - check if a struct device represents a SAS port 105365c92b09SJames Bottomley * @dev: device to check 105465c92b09SJames Bottomley * 105565c92b09SJames Bottomley * Returns: 105665c92b09SJames Bottomley * %1 if the device represents a SAS Port, %0 else 105765c92b09SJames Bottomley */ 105865c92b09SJames Bottomley int scsi_is_sas_port(const struct device *dev) 105965c92b09SJames Bottomley { 106065c92b09SJames Bottomley return dev->release == sas_port_release; 106165c92b09SJames Bottomley } 106265c92b09SJames Bottomley EXPORT_SYMBOL(scsi_is_sas_port); 106365c92b09SJames Bottomley 106465c92b09SJames Bottomley /** 1065f41a0c44SDan Williams * sas_port_get_phy - try to take a reference on a port member 1066f41a0c44SDan Williams * @port: port to check 1067f41a0c44SDan Williams */ 1068f41a0c44SDan Williams struct sas_phy *sas_port_get_phy(struct sas_port *port) 1069f41a0c44SDan Williams { 1070f41a0c44SDan Williams struct sas_phy *phy; 1071f41a0c44SDan Williams 1072f41a0c44SDan Williams mutex_lock(&port->phy_list_mutex); 1073f41a0c44SDan Williams if (list_empty(&port->phy_list)) 1074f41a0c44SDan Williams phy = NULL; 1075f41a0c44SDan Williams else { 1076f41a0c44SDan Williams struct list_head *ent = port->phy_list.next; 1077f41a0c44SDan Williams 1078f41a0c44SDan Williams phy = list_entry(ent, typeof(*phy), port_siblings); 1079f41a0c44SDan Williams get_device(&phy->dev); 1080f41a0c44SDan Williams } 1081f41a0c44SDan Williams mutex_unlock(&port->phy_list_mutex); 1082f41a0c44SDan Williams 1083f41a0c44SDan Williams return phy; 1084f41a0c44SDan Williams } 1085f41a0c44SDan Williams EXPORT_SYMBOL(sas_port_get_phy); 1086f41a0c44SDan Williams 1087f41a0c44SDan Williams /** 108865c92b09SJames Bottomley * sas_port_add_phy - add another phy to a port to form a wide port 108965c92b09SJames Bottomley * @port: port to add the phy to 109065c92b09SJames Bottomley * @phy: phy to add 109165c92b09SJames Bottomley * 109265c92b09SJames Bottomley * When a port is initially created, it is empty (has no phys). All 109365c92b09SJames Bottomley * ports must have at least one phy to operated, and all wide ports 109465c92b09SJames Bottomley * must have at least two. The current code makes no difference 109565c92b09SJames Bottomley * between ports and wide ports, but the only object that can be 109665c92b09SJames Bottomley * connected to a remote device is a port, so ports must be formed on 109765c92b09SJames Bottomley * all devices with phys if they're connected to anything. 109865c92b09SJames Bottomley */ 109965c92b09SJames Bottomley void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) 110065c92b09SJames Bottomley { 110165c92b09SJames Bottomley mutex_lock(&port->phy_list_mutex); 110265c92b09SJames Bottomley if (unlikely(!list_empty(&phy->port_siblings))) { 110365c92b09SJames Bottomley /* make sure we're already on this port */ 110465c92b09SJames Bottomley struct sas_phy *tmp; 110565c92b09SJames Bottomley 110665c92b09SJames Bottomley list_for_each_entry(tmp, &port->phy_list, port_siblings) 110765c92b09SJames Bottomley if (tmp == phy) 110865c92b09SJames Bottomley break; 110965c92b09SJames Bottomley /* If this trips, you added a phy that was already 111065c92b09SJames Bottomley * part of a different port */ 111165c92b09SJames Bottomley if (unlikely(tmp != phy)) { 111271610f55SKay Sievers dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", 111371610f55SKay Sievers dev_name(&phy->dev)); 111465c92b09SJames Bottomley BUG(); 111565c92b09SJames Bottomley } 111665c92b09SJames Bottomley } else { 111765c92b09SJames Bottomley sas_port_create_link(port, phy); 111865c92b09SJames Bottomley list_add_tail(&phy->port_siblings, &port->phy_list); 111965c92b09SJames Bottomley port->num_phys++; 112065c92b09SJames Bottomley } 112165c92b09SJames Bottomley mutex_unlock(&port->phy_list_mutex); 112265c92b09SJames Bottomley } 112365c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_add_phy); 112465c92b09SJames Bottomley 112565c92b09SJames Bottomley /** 112665c92b09SJames Bottomley * sas_port_delete_phy - remove a phy from a port or wide port 112765c92b09SJames Bottomley * @port: port to remove the phy from 112865c92b09SJames Bottomley * @phy: phy to remove 112965c92b09SJames Bottomley * 113065c92b09SJames Bottomley * This operation is used for tearing down ports again. It must be 113165c92b09SJames Bottomley * done to every port or wide port before calling sas_port_delete. 113265c92b09SJames Bottomley */ 113365c92b09SJames Bottomley void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) 113465c92b09SJames Bottomley { 113565c92b09SJames Bottomley mutex_lock(&port->phy_list_mutex); 113665c92b09SJames Bottomley sas_port_delete_link(port, phy); 113765c92b09SJames Bottomley list_del_init(&phy->port_siblings); 113865c92b09SJames Bottomley port->num_phys--; 113965c92b09SJames Bottomley mutex_unlock(&port->phy_list_mutex); 114065c92b09SJames Bottomley } 114165c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_delete_phy); 114265c92b09SJames Bottomley 1143a0e1b6efSJames Bottomley void sas_port_mark_backlink(struct sas_port *port) 1144a0e1b6efSJames Bottomley { 114521434966SDarrick J. Wong int res; 1146a0e1b6efSJames Bottomley struct device *parent = port->dev.parent->parent->parent; 1147a0e1b6efSJames Bottomley 1148a0e1b6efSJames Bottomley if (port->is_backlink) 1149a0e1b6efSJames Bottomley return; 1150a0e1b6efSJames Bottomley port->is_backlink = 1; 115121434966SDarrick J. Wong res = sysfs_create_link(&port->dev.kobj, &parent->kobj, 115271610f55SKay Sievers dev_name(parent)); 115321434966SDarrick J. Wong if (res) 115421434966SDarrick J. Wong goto err; 115521434966SDarrick J. Wong return; 115621434966SDarrick J. Wong err: 115721434966SDarrick J. Wong printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", 1158cadbd4a5SHarvey Harrison __func__, res); 1159a0e1b6efSJames Bottomley 1160a0e1b6efSJames Bottomley } 1161a0e1b6efSJames Bottomley EXPORT_SYMBOL(sas_port_mark_backlink); 1162a0e1b6efSJames Bottomley 116365c92b09SJames Bottomley /* 1164c7ebbbceSChristoph Hellwig * SAS remote PHY attributes. 1165c7ebbbceSChristoph Hellwig */ 1166c7ebbbceSChristoph Hellwig 1167c7ebbbceSChristoph Hellwig #define sas_rphy_show_simple(field, name, format_string, cast) \ 1168c7ebbbceSChristoph Hellwig static ssize_t \ 1169ee959b00STony Jones show_sas_rphy_##name(struct device *dev, \ 1170ee959b00STony Jones struct device_attribute *attr, char *buf) \ 1171c7ebbbceSChristoph Hellwig { \ 1172ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); \ 1173c7ebbbceSChristoph Hellwig \ 1174c7ebbbceSChristoph Hellwig return snprintf(buf, 20, format_string, cast rphy->field); \ 1175c7ebbbceSChristoph Hellwig } 1176c7ebbbceSChristoph Hellwig 1177c7ebbbceSChristoph Hellwig #define sas_rphy_simple_attr(field, name, format_string, type) \ 1178c7ebbbceSChristoph Hellwig sas_rphy_show_simple(field, name, format_string, (type)) \ 1179ee959b00STony Jones static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ 1180c7ebbbceSChristoph Hellwig show_sas_rphy_##name, NULL) 1181c7ebbbceSChristoph Hellwig 1182c7ebbbceSChristoph Hellwig #define sas_rphy_show_protocol(field, name) \ 1183c7ebbbceSChristoph Hellwig static ssize_t \ 1184ee959b00STony Jones show_sas_rphy_##name(struct device *dev, \ 1185ee959b00STony Jones struct device_attribute *attr, char *buf) \ 1186c7ebbbceSChristoph Hellwig { \ 1187ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); \ 1188c7ebbbceSChristoph Hellwig \ 1189c7ebbbceSChristoph Hellwig if (!rphy->field) \ 1190c7ebbbceSChristoph Hellwig return snprintf(buf, 20, "none\n"); \ 1191c7ebbbceSChristoph Hellwig return get_sas_protocol_names(rphy->field, buf); \ 1192c7ebbbceSChristoph Hellwig } 1193c7ebbbceSChristoph Hellwig 1194c7ebbbceSChristoph Hellwig #define sas_rphy_protocol_attr(field, name) \ 1195c7ebbbceSChristoph Hellwig sas_rphy_show_protocol(field, name) \ 1196ee959b00STony Jones static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ 1197c7ebbbceSChristoph Hellwig show_sas_rphy_##name, NULL) 1198c7ebbbceSChristoph Hellwig 1199c7ebbbceSChristoph Hellwig static ssize_t 1200ee959b00STony Jones show_sas_rphy_device_type(struct device *dev, 1201ee959b00STony Jones struct device_attribute *attr, char *buf) 1202c7ebbbceSChristoph Hellwig { 1203ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); 1204c7ebbbceSChristoph Hellwig 1205c7ebbbceSChristoph Hellwig if (!rphy->identify.device_type) 1206c7ebbbceSChristoph Hellwig return snprintf(buf, 20, "none\n"); 1207c7ebbbceSChristoph Hellwig return get_sas_device_type_names( 1208c7ebbbceSChristoph Hellwig rphy->identify.device_type, buf); 1209c7ebbbceSChristoph Hellwig } 1210c7ebbbceSChristoph Hellwig 1211ee959b00STony Jones static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO, 1212c7ebbbceSChristoph Hellwig show_sas_rphy_device_type, NULL); 1213c7ebbbceSChristoph Hellwig 1214a0125641SChristoph Hellwig static ssize_t 1215ee959b00STony Jones show_sas_rphy_enclosure_identifier(struct device *dev, 1216ee959b00STony Jones struct device_attribute *attr, char *buf) 1217a0125641SChristoph Hellwig { 1218ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); 1219a0125641SChristoph Hellwig struct sas_phy *phy = dev_to_phy(rphy->dev.parent); 1220a0125641SChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 1221a0125641SChristoph Hellwig struct sas_internal *i = to_sas_internal(shost->transportt); 1222a0125641SChristoph Hellwig u64 identifier; 1223a0125641SChristoph Hellwig int error; 1224a0125641SChristoph Hellwig 1225a0125641SChristoph Hellwig /* 1226a0125641SChristoph Hellwig * Only devices behind an expander are supported, because the 1227a0125641SChristoph Hellwig * enclosure identifier is a SMP feature. 1228a0125641SChristoph Hellwig */ 1229f4ad7b58SJames Bottomley if (scsi_is_sas_phy_local(phy)) 1230a0125641SChristoph Hellwig return -EINVAL; 1231a0125641SChristoph Hellwig 1232a0125641SChristoph Hellwig error = i->f->get_enclosure_identifier(rphy, &identifier); 1233a0125641SChristoph Hellwig if (error) 1234a0125641SChristoph Hellwig return error; 1235a0125641SChristoph Hellwig return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); 1236a0125641SChristoph Hellwig } 1237a0125641SChristoph Hellwig 1238ee959b00STony Jones static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, 1239a0125641SChristoph Hellwig show_sas_rphy_enclosure_identifier, NULL); 1240a0125641SChristoph Hellwig 1241a0125641SChristoph Hellwig static ssize_t 1242ee959b00STony Jones show_sas_rphy_bay_identifier(struct device *dev, 1243ee959b00STony Jones struct device_attribute *attr, char *buf) 1244a0125641SChristoph Hellwig { 1245ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); 1246a0125641SChristoph Hellwig struct sas_phy *phy = dev_to_phy(rphy->dev.parent); 1247a0125641SChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 1248a0125641SChristoph Hellwig struct sas_internal *i = to_sas_internal(shost->transportt); 1249a0125641SChristoph Hellwig int val; 1250a0125641SChristoph Hellwig 1251f4ad7b58SJames Bottomley if (scsi_is_sas_phy_local(phy)) 1252a0125641SChristoph Hellwig return -EINVAL; 1253a0125641SChristoph Hellwig 1254a0125641SChristoph Hellwig val = i->f->get_bay_identifier(rphy); 1255a0125641SChristoph Hellwig if (val < 0) 1256a0125641SChristoph Hellwig return val; 1257a0125641SChristoph Hellwig return sprintf(buf, "%d\n", val); 1258a0125641SChristoph Hellwig } 1259a0125641SChristoph Hellwig 1260ee959b00STony Jones static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, 1261a0125641SChristoph Hellwig show_sas_rphy_bay_identifier, NULL); 1262a0125641SChristoph Hellwig 1263c7ebbbceSChristoph Hellwig sas_rphy_protocol_attr(identify.initiator_port_protocols, 1264c7ebbbceSChristoph Hellwig initiator_port_protocols); 1265c7ebbbceSChristoph Hellwig sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); 1266c7ebbbceSChristoph Hellwig sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", 1267c7ebbbceSChristoph Hellwig unsigned long long); 1268c7ebbbceSChristoph Hellwig sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); 1269c7ebbbceSChristoph Hellwig 127042ab0360SJames Bottomley /* only need 8 bytes of data plus header (4 or 8) */ 127142ab0360SJames Bottomley #define BUF_SIZE 64 127242ab0360SJames Bottomley 127342ab0360SJames Bottomley int sas_read_port_mode_page(struct scsi_device *sdev) 127442ab0360SJames Bottomley { 127542ab0360SJames Bottomley char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; 12760f88009dSJames Bottomley struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); 127742ab0360SJames Bottomley struct scsi_mode_data mode_data; 127842ab0360SJames Bottomley int res, error; 127942ab0360SJames Bottomley 128042ab0360SJames Bottomley if (!buffer) 128142ab0360SJames Bottomley return -ENOMEM; 128242ab0360SJames Bottomley 128342ab0360SJames Bottomley res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, 128442ab0360SJames Bottomley &mode_data, NULL); 128542ab0360SJames Bottomley 128642ab0360SJames Bottomley error = -EINVAL; 128742ab0360SJames Bottomley if (!scsi_status_is_good(res)) 128842ab0360SJames Bottomley goto out; 128942ab0360SJames Bottomley 129042ab0360SJames Bottomley msdata = buffer + mode_data.header_length + 129142ab0360SJames Bottomley mode_data.block_descriptor_length; 129242ab0360SJames Bottomley 129342ab0360SJames Bottomley if (msdata - buffer > BUF_SIZE - 8) 129442ab0360SJames Bottomley goto out; 129542ab0360SJames Bottomley 129642ab0360SJames Bottomley error = 0; 129742ab0360SJames Bottomley 129842ab0360SJames Bottomley rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; 129942ab0360SJames Bottomley rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; 130042ab0360SJames Bottomley rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; 130142ab0360SJames Bottomley 130242ab0360SJames Bottomley out: 130342ab0360SJames Bottomley kfree(buffer); 130442ab0360SJames Bottomley return error; 130542ab0360SJames Bottomley } 130642ab0360SJames Bottomley EXPORT_SYMBOL(sas_read_port_mode_page); 130742ab0360SJames Bottomley 130879cb1819SJames Bottomley static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, 130979cb1819SJames Bottomley "sas_end_device", NULL, NULL, NULL); 131079cb1819SJames Bottomley 131142ab0360SJames Bottomley #define sas_end_dev_show_simple(field, name, format_string, cast) \ 131242ab0360SJames Bottomley static ssize_t \ 1313ee959b00STony Jones show_sas_end_dev_##name(struct device *dev, \ 1314ee959b00STony Jones struct device_attribute *attr, char *buf) \ 131542ab0360SJames Bottomley { \ 1316ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); \ 131742ab0360SJames Bottomley struct sas_end_device *rdev = rphy_to_end_device(rphy); \ 131842ab0360SJames Bottomley \ 131942ab0360SJames Bottomley return snprintf(buf, 20, format_string, cast rdev->field); \ 132042ab0360SJames Bottomley } 132142ab0360SJames Bottomley 132242ab0360SJames Bottomley #define sas_end_dev_simple_attr(field, name, format_string, type) \ 132342ab0360SJames Bottomley sas_end_dev_show_simple(field, name, format_string, (type)) \ 1324ee959b00STony Jones static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ 132542ab0360SJames Bottomley show_sas_end_dev_##name, NULL) 132642ab0360SJames Bottomley 132742ab0360SJames Bottomley sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); 132842ab0360SJames Bottomley sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, 132942ab0360SJames Bottomley "%d\n", int); 133042ab0360SJames Bottomley sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, 133142ab0360SJames Bottomley "%d\n", int); 13320f88009dSJames Bottomley sas_end_dev_simple_attr(tlr_supported, tlr_supported, 13330f88009dSJames Bottomley "%d\n", int); 13340f88009dSJames Bottomley sas_end_dev_simple_attr(tlr_enabled, tlr_enabled, 13350f88009dSJames Bottomley "%d\n", int); 133642ab0360SJames Bottomley 133779cb1819SJames Bottomley static DECLARE_TRANSPORT_CLASS(sas_expander_class, 133879cb1819SJames Bottomley "sas_expander", NULL, NULL, NULL); 133979cb1819SJames Bottomley 134079cb1819SJames Bottomley #define sas_expander_show_simple(field, name, format_string, cast) \ 134179cb1819SJames Bottomley static ssize_t \ 1342ee959b00STony Jones show_sas_expander_##name(struct device *dev, \ 1343ee959b00STony Jones struct device_attribute *attr, char *buf) \ 134479cb1819SJames Bottomley { \ 1345ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); \ 134679cb1819SJames Bottomley struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ 134779cb1819SJames Bottomley \ 134879cb1819SJames Bottomley return snprintf(buf, 20, format_string, cast edev->field); \ 134979cb1819SJames Bottomley } 135079cb1819SJames Bottomley 135179cb1819SJames Bottomley #define sas_expander_simple_attr(field, name, format_string, type) \ 135279cb1819SJames Bottomley sas_expander_show_simple(field, name, format_string, (type)) \ 1353ee959b00STony Jones static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \ 135479cb1819SJames Bottomley show_sas_expander_##name, NULL) 135579cb1819SJames Bottomley 135679cb1819SJames Bottomley sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); 135779cb1819SJames Bottomley sas_expander_simple_attr(product_id, product_id, "%s\n", char *); 135879cb1819SJames Bottomley sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); 135979cb1819SJames Bottomley sas_expander_simple_attr(component_vendor_id, component_vendor_id, 136079cb1819SJames Bottomley "%s\n", char *); 136179cb1819SJames Bottomley sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); 136279cb1819SJames Bottomley sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", 136379cb1819SJames Bottomley unsigned int); 136479cb1819SJames Bottomley sas_expander_simple_attr(level, level, "%d\n", int); 136542ab0360SJames Bottomley 1366c7ebbbceSChristoph Hellwig static DECLARE_TRANSPORT_CLASS(sas_rphy_class, 13672f8600dfSJames Bottomley "sas_device", NULL, NULL, NULL); 1368c7ebbbceSChristoph Hellwig 1369c7ebbbceSChristoph Hellwig static int sas_rphy_match(struct attribute_container *cont, struct device *dev) 1370c7ebbbceSChristoph Hellwig { 1371c7ebbbceSChristoph Hellwig struct Scsi_Host *shost; 1372c7ebbbceSChristoph Hellwig struct sas_internal *i; 1373c7ebbbceSChristoph Hellwig 1374c7ebbbceSChristoph Hellwig if (!scsi_is_sas_rphy(dev)) 1375c7ebbbceSChristoph Hellwig return 0; 1376c7ebbbceSChristoph Hellwig shost = dev_to_shost(dev->parent->parent); 1377c7ebbbceSChristoph Hellwig 1378c7ebbbceSChristoph Hellwig if (!shost->transportt) 1379c7ebbbceSChristoph Hellwig return 0; 1380c7ebbbceSChristoph Hellwig if (shost->transportt->host_attrs.ac.class != 1381c7ebbbceSChristoph Hellwig &sas_host_class.class) 1382c7ebbbceSChristoph Hellwig return 0; 1383c7ebbbceSChristoph Hellwig 1384c7ebbbceSChristoph Hellwig i = to_sas_internal(shost->transportt); 1385c7ebbbceSChristoph Hellwig return &i->rphy_attr_cont.ac == cont; 1386c7ebbbceSChristoph Hellwig } 1387c7ebbbceSChristoph Hellwig 138842ab0360SJames Bottomley static int sas_end_dev_match(struct attribute_container *cont, 138942ab0360SJames Bottomley struct device *dev) 139042ab0360SJames Bottomley { 139142ab0360SJames Bottomley struct Scsi_Host *shost; 139242ab0360SJames Bottomley struct sas_internal *i; 139342ab0360SJames Bottomley struct sas_rphy *rphy; 139442ab0360SJames Bottomley 139542ab0360SJames Bottomley if (!scsi_is_sas_rphy(dev)) 139642ab0360SJames Bottomley return 0; 139742ab0360SJames Bottomley shost = dev_to_shost(dev->parent->parent); 139842ab0360SJames Bottomley rphy = dev_to_rphy(dev); 139942ab0360SJames Bottomley 140042ab0360SJames Bottomley if (!shost->transportt) 140142ab0360SJames Bottomley return 0; 140242ab0360SJames Bottomley if (shost->transportt->host_attrs.ac.class != 140342ab0360SJames Bottomley &sas_host_class.class) 140442ab0360SJames Bottomley return 0; 140542ab0360SJames Bottomley 140642ab0360SJames Bottomley i = to_sas_internal(shost->transportt); 140742ab0360SJames Bottomley return &i->end_dev_attr_cont.ac == cont && 14082f8600dfSJames Bottomley rphy->identify.device_type == SAS_END_DEVICE; 140942ab0360SJames Bottomley } 141042ab0360SJames Bottomley 141179cb1819SJames Bottomley static int sas_expander_match(struct attribute_container *cont, 141279cb1819SJames Bottomley struct device *dev) 141379cb1819SJames Bottomley { 141479cb1819SJames Bottomley struct Scsi_Host *shost; 141579cb1819SJames Bottomley struct sas_internal *i; 141679cb1819SJames Bottomley struct sas_rphy *rphy; 141779cb1819SJames Bottomley 141879cb1819SJames Bottomley if (!scsi_is_sas_rphy(dev)) 141979cb1819SJames Bottomley return 0; 142079cb1819SJames Bottomley shost = dev_to_shost(dev->parent->parent); 142179cb1819SJames Bottomley rphy = dev_to_rphy(dev); 142279cb1819SJames Bottomley 142379cb1819SJames Bottomley if (!shost->transportt) 142479cb1819SJames Bottomley return 0; 142579cb1819SJames Bottomley if (shost->transportt->host_attrs.ac.class != 142679cb1819SJames Bottomley &sas_host_class.class) 142779cb1819SJames Bottomley return 0; 142879cb1819SJames Bottomley 142979cb1819SJames Bottomley i = to_sas_internal(shost->transportt); 143079cb1819SJames Bottomley return &i->expander_attr_cont.ac == cont && 143179cb1819SJames Bottomley (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || 14322f8600dfSJames Bottomley rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); 143379cb1819SJames Bottomley } 143479cb1819SJames Bottomley 14352f8600dfSJames Bottomley static void sas_expander_release(struct device *dev) 1436c7ebbbceSChristoph Hellwig { 1437c7ebbbceSChristoph Hellwig struct sas_rphy *rphy = dev_to_rphy(dev); 14382f8600dfSJames Bottomley struct sas_expander_device *edev = rphy_to_expander_device(rphy); 1439c7ebbbceSChristoph Hellwig 144093c20a59SFUJITA Tomonori if (rphy->q) 144193c20a59SFUJITA Tomonori blk_cleanup_queue(rphy->q); 144293c20a59SFUJITA Tomonori 1443c7ebbbceSChristoph Hellwig put_device(dev->parent); 14442f8600dfSJames Bottomley kfree(edev); 1445c7ebbbceSChristoph Hellwig } 1446c7ebbbceSChristoph Hellwig 14472f8600dfSJames Bottomley static void sas_end_device_release(struct device *dev) 1448c7ebbbceSChristoph Hellwig { 14492f8600dfSJames Bottomley struct sas_rphy *rphy = dev_to_rphy(dev); 14502f8600dfSJames Bottomley struct sas_end_device *edev = rphy_to_end_device(rphy); 1451c7ebbbceSChristoph Hellwig 145293c20a59SFUJITA Tomonori if (rphy->q) 145393c20a59SFUJITA Tomonori blk_cleanup_queue(rphy->q); 145493c20a59SFUJITA Tomonori 14552f8600dfSJames Bottomley put_device(dev->parent); 14562f8600dfSJames Bottomley kfree(edev); 1457c7ebbbceSChristoph Hellwig } 1458c7ebbbceSChristoph Hellwig 1459c7ebbbceSChristoph Hellwig /** 1460c5943d36SJames Bottomley * sas_rphy_initialize - common rphy intialization 1461c5943d36SJames Bottomley * @rphy: rphy to initialise 1462c5943d36SJames Bottomley * 1463c5943d36SJames Bottomley * Used by both sas_end_device_alloc() and sas_expander_alloc() to 1464c5943d36SJames Bottomley * initialise the common rphy component of each. 1465c5943d36SJames Bottomley */ 1466c5943d36SJames Bottomley static void sas_rphy_initialize(struct sas_rphy *rphy) 1467c5943d36SJames Bottomley { 1468c5943d36SJames Bottomley INIT_LIST_HEAD(&rphy->list); 1469c5943d36SJames Bottomley } 1470c5943d36SJames Bottomley 1471c5943d36SJames Bottomley /** 147242ab0360SJames Bottomley * sas_end_device_alloc - allocate an rphy for an end device 1473eb44820cSRob Landley * @parent: which port 147442ab0360SJames Bottomley * 147542ab0360SJames Bottomley * Allocates an SAS remote PHY structure, connected to @parent. 147642ab0360SJames Bottomley * 147742ab0360SJames Bottomley * Returns: 147842ab0360SJames Bottomley * SAS PHY allocated or %NULL if the allocation failed. 147942ab0360SJames Bottomley */ 148065c92b09SJames Bottomley struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) 148142ab0360SJames Bottomley { 148242ab0360SJames Bottomley struct Scsi_Host *shost = dev_to_shost(&parent->dev); 148342ab0360SJames Bottomley struct sas_end_device *rdev; 148442ab0360SJames Bottomley 148542ab0360SJames Bottomley rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); 148642ab0360SJames Bottomley if (!rdev) { 148742ab0360SJames Bottomley return NULL; 148842ab0360SJames Bottomley } 148942ab0360SJames Bottomley 149042ab0360SJames Bottomley device_initialize(&rdev->rphy.dev); 149142ab0360SJames Bottomley rdev->rphy.dev.parent = get_device(&parent->dev); 14922f8600dfSJames Bottomley rdev->rphy.dev.release = sas_end_device_release; 149365c92b09SJames Bottomley if (scsi_is_sas_expander_device(parent->dev.parent)) { 149465c92b09SJames Bottomley struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); 149571610f55SKay Sievers dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d", 149671610f55SKay Sievers shost->host_no, rphy->scsi_target_id, 149771610f55SKay Sievers parent->port_identifier); 149865c92b09SJames Bottomley } else 149971610f55SKay Sievers dev_set_name(&rdev->rphy.dev, "end_device-%d:%d", 150065c92b09SJames Bottomley shost->host_no, parent->port_identifier); 150142ab0360SJames Bottomley rdev->rphy.identify.device_type = SAS_END_DEVICE; 1502c5943d36SJames Bottomley sas_rphy_initialize(&rdev->rphy); 150342ab0360SJames Bottomley transport_setup_device(&rdev->rphy.dev); 150442ab0360SJames Bottomley 150542ab0360SJames Bottomley return &rdev->rphy; 150642ab0360SJames Bottomley } 150742ab0360SJames Bottomley EXPORT_SYMBOL(sas_end_device_alloc); 150842ab0360SJames Bottomley 150979cb1819SJames Bottomley /** 151079cb1819SJames Bottomley * sas_expander_alloc - allocate an rphy for an end device 1511eb44820cSRob Landley * @parent: which port 1512eb44820cSRob Landley * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE 151379cb1819SJames Bottomley * 151479cb1819SJames Bottomley * Allocates an SAS remote PHY structure, connected to @parent. 151579cb1819SJames Bottomley * 151679cb1819SJames Bottomley * Returns: 151779cb1819SJames Bottomley * SAS PHY allocated or %NULL if the allocation failed. 151879cb1819SJames Bottomley */ 151965c92b09SJames Bottomley struct sas_rphy *sas_expander_alloc(struct sas_port *parent, 152079cb1819SJames Bottomley enum sas_device_type type) 152179cb1819SJames Bottomley { 152279cb1819SJames Bottomley struct Scsi_Host *shost = dev_to_shost(&parent->dev); 152379cb1819SJames Bottomley struct sas_expander_device *rdev; 152479cb1819SJames Bottomley struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 152579cb1819SJames Bottomley 152679cb1819SJames Bottomley BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && 152779cb1819SJames Bottomley type != SAS_FANOUT_EXPANDER_DEVICE); 152879cb1819SJames Bottomley 152979cb1819SJames Bottomley rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); 153079cb1819SJames Bottomley if (!rdev) { 153179cb1819SJames Bottomley return NULL; 153279cb1819SJames Bottomley } 153379cb1819SJames Bottomley 153479cb1819SJames Bottomley device_initialize(&rdev->rphy.dev); 153579cb1819SJames Bottomley rdev->rphy.dev.parent = get_device(&parent->dev); 15362f8600dfSJames Bottomley rdev->rphy.dev.release = sas_expander_release; 153779cb1819SJames Bottomley mutex_lock(&sas_host->lock); 153879cb1819SJames Bottomley rdev->rphy.scsi_target_id = sas_host->next_expander_id++; 153979cb1819SJames Bottomley mutex_unlock(&sas_host->lock); 154071610f55SKay Sievers dev_set_name(&rdev->rphy.dev, "expander-%d:%d", 154179cb1819SJames Bottomley shost->host_no, rdev->rphy.scsi_target_id); 154279cb1819SJames Bottomley rdev->rphy.identify.device_type = type; 1543c5943d36SJames Bottomley sas_rphy_initialize(&rdev->rphy); 154479cb1819SJames Bottomley transport_setup_device(&rdev->rphy.dev); 154579cb1819SJames Bottomley 154679cb1819SJames Bottomley return &rdev->rphy; 154779cb1819SJames Bottomley } 154879cb1819SJames Bottomley EXPORT_SYMBOL(sas_expander_alloc); 154942ab0360SJames Bottomley 155042ab0360SJames Bottomley /** 1551eb44820cSRob Landley * sas_rphy_add - add a SAS remote PHY to the device hierarchy 1552c7ebbbceSChristoph Hellwig * @rphy: The remote PHY to be added 1553c7ebbbceSChristoph Hellwig * 1554c7ebbbceSChristoph Hellwig * Publishes a SAS remote PHY to the rest of the system. 1555c7ebbbceSChristoph Hellwig */ 1556c7ebbbceSChristoph Hellwig int sas_rphy_add(struct sas_rphy *rphy) 1557c7ebbbceSChristoph Hellwig { 155865c92b09SJames Bottomley struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); 1559c7ebbbceSChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); 1560c7ebbbceSChristoph Hellwig struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 1561c7ebbbceSChristoph Hellwig struct sas_identify *identify = &rphy->identify; 1562c7ebbbceSChristoph Hellwig int error; 1563c7ebbbceSChristoph Hellwig 1564c7ebbbceSChristoph Hellwig if (parent->rphy) 1565c7ebbbceSChristoph Hellwig return -ENXIO; 1566c7ebbbceSChristoph Hellwig parent->rphy = rphy; 1567c7ebbbceSChristoph Hellwig 1568c7ebbbceSChristoph Hellwig error = device_add(&rphy->dev); 1569c7ebbbceSChristoph Hellwig if (error) 1570c7ebbbceSChristoph Hellwig return error; 1571c7ebbbceSChristoph Hellwig transport_add_device(&rphy->dev); 1572c7ebbbceSChristoph Hellwig transport_configure_device(&rphy->dev); 157339dca558SJames Bottomley if (sas_bsg_initialize(shost, rphy)) 157471610f55SKay Sievers printk("fail to a bsg device %s\n", dev_name(&rphy->dev)); 157539dca558SJames Bottomley 1576c7ebbbceSChristoph Hellwig 1577e02f3f59SChristoph Hellwig mutex_lock(&sas_host->lock); 1578c7ebbbceSChristoph Hellwig list_add_tail(&rphy->list, &sas_host->rphy_list); 1579c7ebbbceSChristoph Hellwig if (identify->device_type == SAS_END_DEVICE && 1580c7ebbbceSChristoph Hellwig (identify->target_port_protocols & 1581c7ebbbceSChristoph Hellwig (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) 1582c7ebbbceSChristoph Hellwig rphy->scsi_target_id = sas_host->next_target_id++; 15837676f83aSJames Bottomley else if (identify->device_type == SAS_END_DEVICE) 15847676f83aSJames Bottomley rphy->scsi_target_id = -1; 1585e02f3f59SChristoph Hellwig mutex_unlock(&sas_host->lock); 1586c7ebbbceSChristoph Hellwig 158779cb1819SJames Bottomley if (identify->device_type == SAS_END_DEVICE && 158879cb1819SJames Bottomley rphy->scsi_target_id != -1) { 15892fc62e2aSDan Williams int lun; 15902fc62e2aSDan Williams 15912fc62e2aSDan Williams if (identify->target_port_protocols & SAS_PROTOCOL_SSP) 15922fc62e2aSDan Williams lun = SCAN_WILD_CARD; 15932fc62e2aSDan Williams else 15942fc62e2aSDan Williams lun = 0; 15952fc62e2aSDan Williams 15962fc62e2aSDan Williams scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, lun, 0); 1597c7ebbbceSChristoph Hellwig } 1598c7ebbbceSChristoph Hellwig 1599c7ebbbceSChristoph Hellwig return 0; 1600c7ebbbceSChristoph Hellwig } 1601c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_rphy_add); 1602c7ebbbceSChristoph Hellwig 1603c7ebbbceSChristoph Hellwig /** 1604eb44820cSRob Landley * sas_rphy_free - free a SAS remote PHY 1605eb44820cSRob Landley * @rphy: SAS remote PHY to free 1606c7ebbbceSChristoph Hellwig * 1607c7ebbbceSChristoph Hellwig * Frees the specified SAS remote PHY. 1608c7ebbbceSChristoph Hellwig * 1609c7ebbbceSChristoph Hellwig * Note: 1610c7ebbbceSChristoph Hellwig * This function must only be called on a remote 1611af901ca1SAndré Goddard Rosa * PHY that has not successfully been added using 16126f63caaeSDarrick J. Wong * sas_rphy_add() (or has been sas_rphy_remove()'d) 1613c7ebbbceSChristoph Hellwig */ 1614c7ebbbceSChristoph Hellwig void sas_rphy_free(struct sas_rphy *rphy) 1615c7ebbbceSChristoph Hellwig { 161692aab646SMike Anderson struct device *dev = &rphy->dev; 1617c7ebbbceSChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); 1618c7ebbbceSChristoph Hellwig struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 1619c7ebbbceSChristoph Hellwig 1620e02f3f59SChristoph Hellwig mutex_lock(&sas_host->lock); 1621c7ebbbceSChristoph Hellwig list_del(&rphy->list); 1622e02f3f59SChristoph Hellwig mutex_unlock(&sas_host->lock); 1623c7ebbbceSChristoph Hellwig 162492aab646SMike Anderson transport_destroy_device(dev); 16252f8600dfSJames Bottomley 162692aab646SMike Anderson put_device(dev); 1627c7ebbbceSChristoph Hellwig } 1628c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_rphy_free); 1629c7ebbbceSChristoph Hellwig 1630c7ebbbceSChristoph Hellwig /** 1631eb44820cSRob Landley * sas_rphy_delete - remove and free SAS remote PHY 16326f63caaeSDarrick J. Wong * @rphy: SAS remote PHY to remove and free 1633c7ebbbceSChristoph Hellwig * 16346f63caaeSDarrick J. Wong * Removes the specified SAS remote PHY and frees it. 1635c7ebbbceSChristoph Hellwig */ 1636c7ebbbceSChristoph Hellwig void 1637c7ebbbceSChristoph Hellwig sas_rphy_delete(struct sas_rphy *rphy) 1638c7ebbbceSChristoph Hellwig { 16396f63caaeSDarrick J. Wong sas_rphy_remove(rphy); 16406f63caaeSDarrick J. Wong sas_rphy_free(rphy); 16416f63caaeSDarrick J. Wong } 16426f63caaeSDarrick J. Wong EXPORT_SYMBOL(sas_rphy_delete); 16436f63caaeSDarrick J. Wong 16446f63caaeSDarrick J. Wong /** 164587c8331fSDan Williams * sas_rphy_unlink - unlink SAS remote PHY 164687c8331fSDan Williams * @rphy: SAS remote phy to unlink from its parent port 164787c8331fSDan Williams * 164887c8331fSDan Williams * Removes port reference to an rphy 164987c8331fSDan Williams */ 165087c8331fSDan Williams void sas_rphy_unlink(struct sas_rphy *rphy) 165187c8331fSDan Williams { 165287c8331fSDan Williams struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); 165387c8331fSDan Williams 165487c8331fSDan Williams parent->rphy = NULL; 165587c8331fSDan Williams } 165687c8331fSDan Williams EXPORT_SYMBOL(sas_rphy_unlink); 165787c8331fSDan Williams 165887c8331fSDan Williams /** 1659eb44820cSRob Landley * sas_rphy_remove - remove SAS remote PHY 16606f63caaeSDarrick J. Wong * @rphy: SAS remote phy to remove 16616f63caaeSDarrick J. Wong * 16626f63caaeSDarrick J. Wong * Removes the specified SAS remote PHY. 16636f63caaeSDarrick J. Wong */ 16646f63caaeSDarrick J. Wong void 16656f63caaeSDarrick J. Wong sas_rphy_remove(struct sas_rphy *rphy) 16666f63caaeSDarrick J. Wong { 1667c7ebbbceSChristoph Hellwig struct device *dev = &rphy->dev; 1668c7ebbbceSChristoph Hellwig 1669d4054239SChristoph Hellwig switch (rphy->identify.device_type) { 1670d4054239SChristoph Hellwig case SAS_END_DEVICE: 1671fe8b2304SChristoph Hellwig scsi_remove_target(dev); 1672d4054239SChristoph Hellwig break; 1673d4054239SChristoph Hellwig case SAS_EDGE_EXPANDER_DEVICE: 1674d4054239SChristoph Hellwig case SAS_FANOUT_EXPANDER_DEVICE: 167565c92b09SJames Bottomley sas_remove_children(dev); 1676d4054239SChristoph Hellwig break; 1677d4054239SChristoph Hellwig default: 1678d4054239SChristoph Hellwig break; 1679d4054239SChristoph Hellwig } 1680c7ebbbceSChristoph Hellwig 168187c8331fSDan Williams sas_rphy_unlink(rphy); 16826aa6caffSJoe Lawrence sas_bsg_remove(NULL, rphy); 1683fe8b2304SChristoph Hellwig transport_remove_device(dev); 1684fe8b2304SChristoph Hellwig device_del(dev); 1685c7ebbbceSChristoph Hellwig } 16866f63caaeSDarrick J. Wong EXPORT_SYMBOL(sas_rphy_remove); 1687c7ebbbceSChristoph Hellwig 1688c7ebbbceSChristoph Hellwig /** 1689eb44820cSRob Landley * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY 1690c7ebbbceSChristoph Hellwig * @dev: device to check 1691c7ebbbceSChristoph Hellwig * 1692c7ebbbceSChristoph Hellwig * Returns: 1693c7ebbbceSChristoph Hellwig * %1 if the device represents a SAS remote PHY, %0 else 1694c7ebbbceSChristoph Hellwig */ 1695c7ebbbceSChristoph Hellwig int scsi_is_sas_rphy(const struct device *dev) 1696c7ebbbceSChristoph Hellwig { 16972f8600dfSJames Bottomley return dev->release == sas_end_device_release || 16982f8600dfSJames Bottomley dev->release == sas_expander_release; 1699c7ebbbceSChristoph Hellwig } 1700c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(scsi_is_sas_rphy); 1701c7ebbbceSChristoph Hellwig 1702c7ebbbceSChristoph Hellwig 1703c7ebbbceSChristoph Hellwig /* 1704c7ebbbceSChristoph Hellwig * SCSI scan helper 1705c7ebbbceSChristoph Hellwig */ 1706c7ebbbceSChristoph Hellwig 1707e02f3f59SChristoph Hellwig static int sas_user_scan(struct Scsi_Host *shost, uint channel, 1708e02f3f59SChristoph Hellwig uint id, uint lun) 1709c7ebbbceSChristoph Hellwig { 1710c7ebbbceSChristoph Hellwig struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 1711c7ebbbceSChristoph Hellwig struct sas_rphy *rphy; 1712c7ebbbceSChristoph Hellwig 1713e02f3f59SChristoph Hellwig mutex_lock(&sas_host->lock); 1714c7ebbbceSChristoph Hellwig list_for_each_entry(rphy, &sas_host->rphy_list, list) { 17156d99a3f3SJames Bottomley if (rphy->identify.device_type != SAS_END_DEVICE || 17166d99a3f3SJames Bottomley rphy->scsi_target_id == -1) 1717e02f3f59SChristoph Hellwig continue; 1718e02f3f59SChristoph Hellwig 1719e8bf3941SJames Bottomley if ((channel == SCAN_WILD_CARD || channel == 0) && 1720e02f3f59SChristoph Hellwig (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { 1721e8bf3941SJames Bottomley scsi_scan_target(&rphy->dev, 0, 1722e02f3f59SChristoph Hellwig rphy->scsi_target_id, lun, 1); 1723e02f3f59SChristoph Hellwig } 1724e02f3f59SChristoph Hellwig } 1725e02f3f59SChristoph Hellwig mutex_unlock(&sas_host->lock); 1726e02f3f59SChristoph Hellwig 1727e02f3f59SChristoph Hellwig return 0; 1728c7ebbbceSChristoph Hellwig } 1729c7ebbbceSChristoph Hellwig 1730c7ebbbceSChristoph Hellwig 1731c7ebbbceSChristoph Hellwig /* 1732c7ebbbceSChristoph Hellwig * Setup / Teardown code 1733c7ebbbceSChristoph Hellwig */ 1734c7ebbbceSChristoph Hellwig 173542ab0360SJames Bottomley #define SETUP_TEMPLATE(attrb, field, perm, test) \ 1736ee959b00STony Jones i->private_##attrb[count] = dev_attr_##field; \ 173742ab0360SJames Bottomley i->private_##attrb[count].attr.mode = perm; \ 173842ab0360SJames Bottomley i->attrb[count] = &i->private_##attrb[count]; \ 173942ab0360SJames Bottomley if (test) \ 1740c7ebbbceSChristoph Hellwig count++ 1741c7ebbbceSChristoph Hellwig 1742d24e1eebSJames Bottomley #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ 1743ee959b00STony Jones i->private_##attrb[count] = dev_attr_##field; \ 1744d24e1eebSJames Bottomley i->private_##attrb[count].attr.mode = perm; \ 1745d24e1eebSJames Bottomley if (ro_test) { \ 1746d24e1eebSJames Bottomley i->private_##attrb[count].attr.mode = ro_perm; \ 1747d24e1eebSJames Bottomley i->private_##attrb[count].store = NULL; \ 1748d24e1eebSJames Bottomley } \ 1749d24e1eebSJames Bottomley i->attrb[count] = &i->private_##attrb[count]; \ 1750d24e1eebSJames Bottomley if (test) \ 1751d24e1eebSJames Bottomley count++ 175242ab0360SJames Bottomley 175342ab0360SJames Bottomley #define SETUP_RPORT_ATTRIBUTE(field) \ 175442ab0360SJames Bottomley SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) 175542ab0360SJames Bottomley 1756dd9fbb52SJames Bottomley #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ 175742ab0360SJames Bottomley SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) 1758dd9fbb52SJames Bottomley 175965c92b09SJames Bottomley #define SETUP_PHY_ATTRIBUTE(field) \ 176042ab0360SJames Bottomley SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) 1761c7ebbbceSChristoph Hellwig 1762d24e1eebSJames Bottomley #define SETUP_PHY_ATTRIBUTE_RW(field) \ 1763d24e1eebSJames Bottomley SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ 1764d24e1eebSJames Bottomley !i->f->set_phy_speed, S_IRUGO) 1765d24e1eebSJames Bottomley 1766acbf167dSDarrick J. Wong #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ 1767acbf167dSDarrick J. Wong SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ 1768acbf167dSDarrick J. Wong !i->f->func, S_IRUGO) 1769acbf167dSDarrick J. Wong 177065c92b09SJames Bottomley #define SETUP_PORT_ATTRIBUTE(field) \ 177165c92b09SJames Bottomley SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) 177265c92b09SJames Bottomley 177365c92b09SJames Bottomley #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ 177442ab0360SJames Bottomley SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) 1775dd9fbb52SJames Bottomley 177665c92b09SJames Bottomley #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ 1777fe3b5bfeSDarrick J. Wong SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) 177807ba3a95SChristoph Hellwig 177965c92b09SJames Bottomley #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ 1780fe3b5bfeSDarrick J. Wong SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) 1781dd9fbb52SJames Bottomley 178242ab0360SJames Bottomley #define SETUP_END_DEV_ATTRIBUTE(field) \ 178342ab0360SJames Bottomley SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) 1784c7ebbbceSChristoph Hellwig 178579cb1819SJames Bottomley #define SETUP_EXPANDER_ATTRIBUTE(field) \ 178679cb1819SJames Bottomley SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) 178779cb1819SJames Bottomley 1788c7ebbbceSChristoph Hellwig /** 1789eb44820cSRob Landley * sas_attach_transport - instantiate SAS transport template 1790c7ebbbceSChristoph Hellwig * @ft: SAS transport class function template 1791c7ebbbceSChristoph Hellwig */ 1792c7ebbbceSChristoph Hellwig struct scsi_transport_template * 1793c7ebbbceSChristoph Hellwig sas_attach_transport(struct sas_function_template *ft) 1794c7ebbbceSChristoph Hellwig { 1795c7ebbbceSChristoph Hellwig struct sas_internal *i; 1796c7ebbbceSChristoph Hellwig int count; 1797c7ebbbceSChristoph Hellwig 179824669f75SJes Sorensen i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); 1799c7ebbbceSChristoph Hellwig if (!i) 1800c7ebbbceSChristoph Hellwig return NULL; 1801c7ebbbceSChristoph Hellwig 1802e02f3f59SChristoph Hellwig i->t.user_scan = sas_user_scan; 1803c7ebbbceSChristoph Hellwig 1804c7ebbbceSChristoph Hellwig i->t.host_attrs.ac.attrs = &i->host_attrs[0]; 1805c7ebbbceSChristoph Hellwig i->t.host_attrs.ac.class = &sas_host_class.class; 1806c7ebbbceSChristoph Hellwig i->t.host_attrs.ac.match = sas_host_match; 1807c7ebbbceSChristoph Hellwig transport_container_register(&i->t.host_attrs); 1808c7ebbbceSChristoph Hellwig i->t.host_size = sizeof(struct sas_host_attrs); 1809c7ebbbceSChristoph Hellwig 1810c7ebbbceSChristoph Hellwig i->phy_attr_cont.ac.class = &sas_phy_class.class; 1811c7ebbbceSChristoph Hellwig i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; 1812c7ebbbceSChristoph Hellwig i->phy_attr_cont.ac.match = sas_phy_match; 1813c7ebbbceSChristoph Hellwig transport_container_register(&i->phy_attr_cont); 1814c7ebbbceSChristoph Hellwig 181565c92b09SJames Bottomley i->port_attr_cont.ac.class = &sas_port_class.class; 181665c92b09SJames Bottomley i->port_attr_cont.ac.attrs = &i->port_attrs[0]; 181765c92b09SJames Bottomley i->port_attr_cont.ac.match = sas_port_match; 181865c92b09SJames Bottomley transport_container_register(&i->port_attr_cont); 181965c92b09SJames Bottomley 1820c7ebbbceSChristoph Hellwig i->rphy_attr_cont.ac.class = &sas_rphy_class.class; 1821c7ebbbceSChristoph Hellwig i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; 1822c7ebbbceSChristoph Hellwig i->rphy_attr_cont.ac.match = sas_rphy_match; 1823c7ebbbceSChristoph Hellwig transport_container_register(&i->rphy_attr_cont); 1824c7ebbbceSChristoph Hellwig 182542ab0360SJames Bottomley i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; 182642ab0360SJames Bottomley i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; 182742ab0360SJames Bottomley i->end_dev_attr_cont.ac.match = sas_end_dev_match; 182842ab0360SJames Bottomley transport_container_register(&i->end_dev_attr_cont); 182942ab0360SJames Bottomley 183079cb1819SJames Bottomley i->expander_attr_cont.ac.class = &sas_expander_class.class; 183179cb1819SJames Bottomley i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; 183279cb1819SJames Bottomley i->expander_attr_cont.ac.match = sas_expander_match; 183379cb1819SJames Bottomley transport_container_register(&i->expander_attr_cont); 183479cb1819SJames Bottomley 1835c7ebbbceSChristoph Hellwig i->f = ft; 1836c7ebbbceSChristoph Hellwig 1837c7ebbbceSChristoph Hellwig count = 0; 183865c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(initiator_port_protocols); 183965c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(target_port_protocols); 184065c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(device_type); 184165c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(sas_address); 184265c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(phy_identifier); 184365c92b09SJames Bottomley //SETUP_PHY_ATTRIBUTE(port_identifier); 184465c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(negotiated_linkrate); 184565c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); 1846d24e1eebSJames Bottomley SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); 184765c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); 1848d24e1eebSJames Bottomley SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); 1849c3ee74c4SChristoph Hellwig 185065c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(invalid_dword_count); 185165c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(running_disparity_error_count); 185265c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); 185365c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); 185465c92b09SJames Bottomley SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); 185565c92b09SJames Bottomley SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); 1856acbf167dSDarrick J. Wong SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); 1857c7ebbbceSChristoph Hellwig i->phy_attrs[count] = NULL; 1858c7ebbbceSChristoph Hellwig 1859c7ebbbceSChristoph Hellwig count = 0; 186065c92b09SJames Bottomley SETUP_PORT_ATTRIBUTE(num_phys); 186165c92b09SJames Bottomley i->port_attrs[count] = NULL; 186265c92b09SJames Bottomley 186365c92b09SJames Bottomley count = 0; 1864c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); 1865c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); 1866c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_device_type); 1867c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_sas_address); 1868c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); 1869dd9fbb52SJames Bottomley SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, 1870dd9fbb52SJames Bottomley get_enclosure_identifier); 1871dd9fbb52SJames Bottomley SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, 1872dd9fbb52SJames Bottomley get_bay_identifier); 1873c7ebbbceSChristoph Hellwig i->rphy_attrs[count] = NULL; 1874c7ebbbceSChristoph Hellwig 187542ab0360SJames Bottomley count = 0; 187642ab0360SJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); 187742ab0360SJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); 187842ab0360SJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); 18790f88009dSJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_supported); 18800f88009dSJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_enabled); 188142ab0360SJames Bottomley i->end_dev_attrs[count] = NULL; 188242ab0360SJames Bottomley 188379cb1819SJames Bottomley count = 0; 188479cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(vendor_id); 188579cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(product_id); 188679cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(product_rev); 188779cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); 188879cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(component_id); 188979cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(component_revision_id); 189079cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(level); 189179cb1819SJames Bottomley i->expander_attrs[count] = NULL; 189279cb1819SJames Bottomley 1893c7ebbbceSChristoph Hellwig return &i->t; 1894c7ebbbceSChristoph Hellwig } 1895c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_attach_transport); 1896c7ebbbceSChristoph Hellwig 1897c7ebbbceSChristoph Hellwig /** 1898eb44820cSRob Landley * sas_release_transport - release SAS transport template instance 1899c7ebbbceSChristoph Hellwig * @t: transport template instance 1900c7ebbbceSChristoph Hellwig */ 1901c7ebbbceSChristoph Hellwig void sas_release_transport(struct scsi_transport_template *t) 1902c7ebbbceSChristoph Hellwig { 1903c7ebbbceSChristoph Hellwig struct sas_internal *i = to_sas_internal(t); 1904c7ebbbceSChristoph Hellwig 1905c7ebbbceSChristoph Hellwig transport_container_unregister(&i->t.host_attrs); 1906c7ebbbceSChristoph Hellwig transport_container_unregister(&i->phy_attr_cont); 190765c92b09SJames Bottomley transport_container_unregister(&i->port_attr_cont); 1908c7ebbbceSChristoph Hellwig transport_container_unregister(&i->rphy_attr_cont); 1909db82f841SJames Bottomley transport_container_unregister(&i->end_dev_attr_cont); 191079cb1819SJames Bottomley transport_container_unregister(&i->expander_attr_cont); 1911c7ebbbceSChristoph Hellwig 1912c7ebbbceSChristoph Hellwig kfree(i); 1913c7ebbbceSChristoph Hellwig } 1914c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_release_transport); 1915c7ebbbceSChristoph Hellwig 1916c7ebbbceSChristoph Hellwig static __init int sas_transport_init(void) 1917c7ebbbceSChristoph Hellwig { 1918c7ebbbceSChristoph Hellwig int error; 1919c7ebbbceSChristoph Hellwig 1920c7ebbbceSChristoph Hellwig error = transport_class_register(&sas_host_class); 1921c7ebbbceSChristoph Hellwig if (error) 1922c7ebbbceSChristoph Hellwig goto out; 1923c7ebbbceSChristoph Hellwig error = transport_class_register(&sas_phy_class); 1924c7ebbbceSChristoph Hellwig if (error) 1925c7ebbbceSChristoph Hellwig goto out_unregister_transport; 192665c92b09SJames Bottomley error = transport_class_register(&sas_port_class); 1927c7ebbbceSChristoph Hellwig if (error) 1928c7ebbbceSChristoph Hellwig goto out_unregister_phy; 192965c92b09SJames Bottomley error = transport_class_register(&sas_rphy_class); 193065c92b09SJames Bottomley if (error) 193165c92b09SJames Bottomley goto out_unregister_port; 193242ab0360SJames Bottomley error = transport_class_register(&sas_end_dev_class); 193342ab0360SJames Bottomley if (error) 193442ab0360SJames Bottomley goto out_unregister_rphy; 193579cb1819SJames Bottomley error = transport_class_register(&sas_expander_class); 193679cb1819SJames Bottomley if (error) 193779cb1819SJames Bottomley goto out_unregister_end_dev; 1938c7ebbbceSChristoph Hellwig 1939c7ebbbceSChristoph Hellwig return 0; 1940c7ebbbceSChristoph Hellwig 194179cb1819SJames Bottomley out_unregister_end_dev: 194279cb1819SJames Bottomley transport_class_unregister(&sas_end_dev_class); 194342ab0360SJames Bottomley out_unregister_rphy: 194442ab0360SJames Bottomley transport_class_unregister(&sas_rphy_class); 194565c92b09SJames Bottomley out_unregister_port: 194665c92b09SJames Bottomley transport_class_unregister(&sas_port_class); 1947c7ebbbceSChristoph Hellwig out_unregister_phy: 1948c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_phy_class); 1949c7ebbbceSChristoph Hellwig out_unregister_transport: 1950c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_host_class); 1951c7ebbbceSChristoph Hellwig out: 1952c7ebbbceSChristoph Hellwig return error; 1953c7ebbbceSChristoph Hellwig 1954c7ebbbceSChristoph Hellwig } 1955c7ebbbceSChristoph Hellwig 1956c7ebbbceSChristoph Hellwig static void __exit sas_transport_exit(void) 1957c7ebbbceSChristoph Hellwig { 1958c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_host_class); 1959c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_phy_class); 196065c92b09SJames Bottomley transport_class_unregister(&sas_port_class); 1961c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_rphy_class); 196242ab0360SJames Bottomley transport_class_unregister(&sas_end_dev_class); 196379cb1819SJames Bottomley transport_class_unregister(&sas_expander_class); 1964c7ebbbceSChristoph Hellwig } 1965c7ebbbceSChristoph Hellwig 1966c7ebbbceSChristoph Hellwig MODULE_AUTHOR("Christoph Hellwig"); 196786b9c4c1SAlexis Bruemmer MODULE_DESCRIPTION("SAS Transport Attributes"); 1968c7ebbbceSChristoph Hellwig MODULE_LICENSE("GPL"); 1969c7ebbbceSChristoph Hellwig 1970c7ebbbceSChristoph Hellwig module_init(sas_transport_init); 1971c7ebbbceSChristoph Hellwig module_exit(sas_transport_exit); 1972