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> 3682ed4db4SChristoph Hellwig #include <scsi/scsi_request.h> 37c7ebbbceSChristoph Hellwig #include <scsi/scsi_device.h> 38c7ebbbceSChristoph Hellwig #include <scsi/scsi_host.h> 39c7ebbbceSChristoph Hellwig #include <scsi/scsi_transport.h> 40c7ebbbceSChristoph Hellwig #include <scsi/scsi_transport_sas.h> 41c7ebbbceSChristoph Hellwig 42d6159c17SJames Bottomley #include "scsi_sas_internal.h" 43c7ebbbceSChristoph Hellwig struct sas_host_attrs { 44c7ebbbceSChristoph Hellwig struct list_head rphy_list; 45e02f3f59SChristoph Hellwig struct mutex lock; 46b6aff669SJames Bottomley struct request_queue *q; 47c7ebbbceSChristoph Hellwig u32 next_target_id; 4879cb1819SJames Bottomley u32 next_expander_id; 49c9fefeb2SJames Bottomley int next_port_id; 50c7ebbbceSChristoph Hellwig }; 51c7ebbbceSChristoph Hellwig #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) 52c7ebbbceSChristoph Hellwig 53c7ebbbceSChristoph Hellwig 54c7ebbbceSChristoph Hellwig /* 55c7ebbbceSChristoph Hellwig * Hack to allow attributes of the same name in different objects. 56c7ebbbceSChristoph Hellwig */ 57ee959b00STony Jones #define SAS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ 58ee959b00STony Jones struct device_attribute dev_attr_##_prefix##_##_name = \ 59c7ebbbceSChristoph Hellwig __ATTR(_name,_mode,_show,_store) 60c7ebbbceSChristoph Hellwig 61c7ebbbceSChristoph Hellwig 62c7ebbbceSChristoph Hellwig /* 63c7ebbbceSChristoph Hellwig * Pretty printing helpers 64c7ebbbceSChristoph Hellwig */ 65c7ebbbceSChristoph Hellwig 66c7ebbbceSChristoph Hellwig #define sas_bitfield_name_match(title, table) \ 67c7ebbbceSChristoph Hellwig static ssize_t \ 68c7ebbbceSChristoph Hellwig get_sas_##title##_names(u32 table_key, char *buf) \ 69c7ebbbceSChristoph Hellwig { \ 70c7ebbbceSChristoph Hellwig char *prefix = ""; \ 71c7ebbbceSChristoph Hellwig ssize_t len = 0; \ 72c7ebbbceSChristoph Hellwig int i; \ 73c7ebbbceSChristoph Hellwig \ 746391a113STobias Klauser for (i = 0; i < ARRAY_SIZE(table); i++) { \ 75c7ebbbceSChristoph Hellwig if (table[i].value & table_key) { \ 76c7ebbbceSChristoph Hellwig len += sprintf(buf + len, "%s%s", \ 77c7ebbbceSChristoph Hellwig prefix, table[i].name); \ 78c7ebbbceSChristoph Hellwig prefix = ", "; \ 79c7ebbbceSChristoph Hellwig } \ 80c7ebbbceSChristoph Hellwig } \ 81c7ebbbceSChristoph Hellwig len += sprintf(buf + len, "\n"); \ 82c7ebbbceSChristoph Hellwig return len; \ 83c7ebbbceSChristoph Hellwig } 84c7ebbbceSChristoph Hellwig 85d24e1eebSJames Bottomley #define sas_bitfield_name_set(title, table) \ 86d24e1eebSJames Bottomley static ssize_t \ 87d24e1eebSJames Bottomley set_sas_##title##_names(u32 *table_key, const char *buf) \ 88d24e1eebSJames Bottomley { \ 89d24e1eebSJames Bottomley ssize_t len = 0; \ 90d24e1eebSJames Bottomley int i; \ 91d24e1eebSJames Bottomley \ 92d24e1eebSJames Bottomley for (i = 0; i < ARRAY_SIZE(table); i++) { \ 93d24e1eebSJames Bottomley len = strlen(table[i].name); \ 94d24e1eebSJames Bottomley if (strncmp(buf, table[i].name, len) == 0 && \ 95d24e1eebSJames Bottomley (buf[len] == '\n' || buf[len] == '\0')) { \ 96d24e1eebSJames Bottomley *table_key = table[i].value; \ 97d24e1eebSJames Bottomley return 0; \ 98d24e1eebSJames Bottomley } \ 99d24e1eebSJames Bottomley } \ 100d24e1eebSJames Bottomley return -EINVAL; \ 101d24e1eebSJames Bottomley } 102d24e1eebSJames Bottomley 103c7ebbbceSChristoph Hellwig #define sas_bitfield_name_search(title, table) \ 104c7ebbbceSChristoph Hellwig static ssize_t \ 105c7ebbbceSChristoph Hellwig get_sas_##title##_names(u32 table_key, char *buf) \ 106c7ebbbceSChristoph Hellwig { \ 107c7ebbbceSChristoph Hellwig ssize_t len = 0; \ 108c7ebbbceSChristoph Hellwig int i; \ 109c7ebbbceSChristoph Hellwig \ 1106391a113STobias Klauser for (i = 0; i < ARRAY_SIZE(table); i++) { \ 111c7ebbbceSChristoph Hellwig if (table[i].value == table_key) { \ 112c7ebbbceSChristoph Hellwig len += sprintf(buf + len, "%s", \ 113c7ebbbceSChristoph Hellwig table[i].name); \ 114c7ebbbceSChristoph Hellwig break; \ 115c7ebbbceSChristoph Hellwig } \ 116c7ebbbceSChristoph Hellwig } \ 117c7ebbbceSChristoph Hellwig len += sprintf(buf + len, "\n"); \ 118c7ebbbceSChristoph Hellwig return len; \ 119c7ebbbceSChristoph Hellwig } 120c7ebbbceSChristoph Hellwig 121c7ebbbceSChristoph Hellwig static struct { 122c7ebbbceSChristoph Hellwig u32 value; 123c7ebbbceSChristoph Hellwig char *name; 124c7ebbbceSChristoph Hellwig } sas_device_type_names[] = { 125c7ebbbceSChristoph Hellwig { SAS_PHY_UNUSED, "unused" }, 126c7ebbbceSChristoph Hellwig { SAS_END_DEVICE, "end device" }, 127c7ebbbceSChristoph Hellwig { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, 128c7ebbbceSChristoph Hellwig { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, 129c7ebbbceSChristoph Hellwig }; 130c7ebbbceSChristoph Hellwig sas_bitfield_name_search(device_type, sas_device_type_names) 131c7ebbbceSChristoph Hellwig 132c7ebbbceSChristoph Hellwig 133c7ebbbceSChristoph Hellwig static struct { 134c7ebbbceSChristoph Hellwig u32 value; 135c7ebbbceSChristoph Hellwig char *name; 136c7ebbbceSChristoph Hellwig } sas_protocol_names[] = { 137c7ebbbceSChristoph Hellwig { SAS_PROTOCOL_SATA, "sata" }, 138c7ebbbceSChristoph Hellwig { SAS_PROTOCOL_SMP, "smp" }, 139c7ebbbceSChristoph Hellwig { SAS_PROTOCOL_STP, "stp" }, 140c7ebbbceSChristoph Hellwig { SAS_PROTOCOL_SSP, "ssp" }, 141c7ebbbceSChristoph Hellwig }; 142c7ebbbceSChristoph Hellwig sas_bitfield_name_match(protocol, sas_protocol_names) 143c7ebbbceSChristoph Hellwig 144c7ebbbceSChristoph Hellwig static struct { 145c7ebbbceSChristoph Hellwig u32 value; 146c7ebbbceSChristoph Hellwig char *name; 147c7ebbbceSChristoph Hellwig } sas_linkspeed_names[] = { 148c7ebbbceSChristoph Hellwig { SAS_LINK_RATE_UNKNOWN, "Unknown" }, 149c7ebbbceSChristoph Hellwig { SAS_PHY_DISABLED, "Phy disabled" }, 150c7ebbbceSChristoph Hellwig { SAS_LINK_RATE_FAILED, "Link Rate failed" }, 151c7ebbbceSChristoph Hellwig { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, 152c7ebbbceSChristoph Hellwig { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, 153c7ebbbceSChristoph Hellwig { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, 1547e6dff62SJames Bottomley { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" }, 155d84fd392SSreekanth Reddy { SAS_LINK_RATE_12_0_GBPS, "12.0 Gbit" }, 156c7ebbbceSChristoph Hellwig }; 157c7ebbbceSChristoph Hellwig sas_bitfield_name_search(linkspeed, sas_linkspeed_names) 158d24e1eebSJames Bottomley sas_bitfield_name_set(linkspeed, sas_linkspeed_names) 159c7ebbbceSChristoph Hellwig 1600f88009dSJames Bottomley static struct sas_end_device *sas_sdev_to_rdev(struct scsi_device *sdev) 1610f88009dSJames Bottomley { 1620f88009dSJames Bottomley struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); 1630f88009dSJames Bottomley struct sas_end_device *rdev; 1640f88009dSJames Bottomley 1650f88009dSJames Bottomley BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); 1660f88009dSJames Bottomley 1670f88009dSJames Bottomley rdev = rphy_to_end_device(rphy); 1680f88009dSJames Bottomley return rdev; 1690f88009dSJames Bottomley } 1700f88009dSJames Bottomley 1717aa68e80SFUJITA Tomonori static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost, 1727aa68e80SFUJITA Tomonori struct sas_rphy *rphy) 1737aa68e80SFUJITA Tomonori { 1747aa68e80SFUJITA Tomonori struct request *req; 1757aa68e80SFUJITA Tomonori int ret; 1767aa68e80SFUJITA Tomonori int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *); 1777aa68e80SFUJITA Tomonori 1787eaceaccSJens Axboe while ((req = blk_fetch_request(q)) != NULL) { 1797aa68e80SFUJITA Tomonori spin_unlock_irq(q->queue_lock); 1807aa68e80SFUJITA Tomonori 18182ed4db4SChristoph Hellwig scsi_req(req)->resid_len = blk_rq_bytes(req); 18282ed4db4SChristoph Hellwig if (req->next_rq) 18382ed4db4SChristoph Hellwig scsi_req(req->next_rq)->resid_len = 18482ed4db4SChristoph Hellwig blk_rq_bytes(req->next_rq); 1857aa68e80SFUJITA Tomonori handler = to_sas_internal(shost->transportt)->f->smp_handler; 1867aa68e80SFUJITA Tomonori ret = handler(shost, rphy, req); 1872d507a01SJames Bottomley req->errors = ret; 1887aa68e80SFUJITA Tomonori 18993bdcba5SFUJITA Tomonori blk_end_request_all(req, ret); 1907aa68e80SFUJITA Tomonori 19193bdcba5SFUJITA Tomonori spin_lock_irq(q->queue_lock); 1927aa68e80SFUJITA Tomonori } 1937aa68e80SFUJITA Tomonori } 1947aa68e80SFUJITA Tomonori 1957aa68e80SFUJITA Tomonori static void sas_host_smp_request(struct request_queue *q) 1967aa68e80SFUJITA Tomonori { 1977aa68e80SFUJITA Tomonori sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL); 1987aa68e80SFUJITA Tomonori } 1997aa68e80SFUJITA Tomonori 2007aa68e80SFUJITA Tomonori static void sas_non_host_smp_request(struct request_queue *q) 2017aa68e80SFUJITA Tomonori { 2027aa68e80SFUJITA Tomonori struct sas_rphy *rphy = q->queuedata; 2037aa68e80SFUJITA Tomonori sas_smp_request(q, rphy_to_shost(rphy), rphy); 2047aa68e80SFUJITA Tomonori } 2057aa68e80SFUJITA Tomonori 20693c20a59SFUJITA Tomonori static void sas_host_release(struct device *dev) 20793c20a59SFUJITA Tomonori { 20893c20a59SFUJITA Tomonori struct Scsi_Host *shost = dev_to_shost(dev); 20993c20a59SFUJITA Tomonori struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 21093c20a59SFUJITA Tomonori struct request_queue *q = sas_host->q; 21193c20a59SFUJITA Tomonori 21293c20a59SFUJITA Tomonori if (q) 21393c20a59SFUJITA Tomonori blk_cleanup_queue(q); 21493c20a59SFUJITA Tomonori } 21593c20a59SFUJITA Tomonori 21639dca558SJames Bottomley static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy) 2177aa68e80SFUJITA Tomonori { 2187aa68e80SFUJITA Tomonori struct request_queue *q; 2197aa68e80SFUJITA Tomonori int error; 22039dca558SJames Bottomley struct device *dev; 22171610f55SKay Sievers char namebuf[20]; 22239dca558SJames Bottomley const char *name; 22393c20a59SFUJITA Tomonori void (*release)(struct device *); 2247aa68e80SFUJITA Tomonori 2257aa68e80SFUJITA Tomonori if (!to_sas_internal(shost->transportt)->f->smp_handler) { 2267aa68e80SFUJITA Tomonori printk("%s can't handle SMP requests\n", shost->hostt->name); 2277aa68e80SFUJITA Tomonori return 0; 2287aa68e80SFUJITA Tomonori } 2297aa68e80SFUJITA Tomonori 230bd1599d9SOmar Sandoval q = blk_alloc_queue(GFP_KERNEL); 231bd1599d9SOmar Sandoval if (!q) 232bd1599d9SOmar Sandoval return -ENOMEM; 233bd1599d9SOmar Sandoval q->cmd_size = sizeof(struct scsi_request); 234bd1599d9SOmar Sandoval 23539dca558SJames Bottomley if (rphy) { 236bd1599d9SOmar Sandoval q->request_fn = sas_non_host_smp_request; 23739dca558SJames Bottomley dev = &rphy->dev; 23871610f55SKay Sievers name = dev_name(dev); 23993c20a59SFUJITA Tomonori release = NULL; 24039dca558SJames Bottomley } else { 241bd1599d9SOmar Sandoval q->request_fn = sas_host_smp_request; 24239dca558SJames Bottomley dev = &shost->shost_gendev; 24339dca558SJames Bottomley snprintf(namebuf, sizeof(namebuf), 24439dca558SJames Bottomley "sas_host%d", shost->host_no); 24539dca558SJames Bottomley name = namebuf; 24693c20a59SFUJITA Tomonori release = sas_host_release; 24739dca558SJames Bottomley } 248bd1599d9SOmar Sandoval error = blk_init_allocated_queue(q); 249bd1599d9SOmar Sandoval if (error) 250bd1599d9SOmar Sandoval goto out_cleanup_queue; 2517aa68e80SFUJITA Tomonori 25293c20a59SFUJITA Tomonori error = bsg_register_queue(q, dev, name, release); 253bd1599d9SOmar Sandoval if (error) 254bd1599d9SOmar Sandoval goto out_cleanup_queue; 2557aa68e80SFUJITA Tomonori 2567aa68e80SFUJITA Tomonori if (rphy) 257b6aff669SJames Bottomley rphy->q = q; 258b6aff669SJames Bottomley else 259b6aff669SJames Bottomley to_sas_host_attrs(shost)->q = q; 260b6aff669SJames Bottomley 261b6aff669SJames Bottomley if (rphy) 2627aa68e80SFUJITA Tomonori q->queuedata = rphy; 2637aa68e80SFUJITA Tomonori else 2647aa68e80SFUJITA Tomonori q->queuedata = shost; 2657aa68e80SFUJITA Tomonori 26675ad23bcSNick Piggin queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); 2677aa68e80SFUJITA Tomonori return 0; 268bd1599d9SOmar Sandoval 269bd1599d9SOmar Sandoval out_cleanup_queue: 270bd1599d9SOmar Sandoval blk_cleanup_queue(q); 271bd1599d9SOmar Sandoval return error; 2727aa68e80SFUJITA Tomonori } 2737aa68e80SFUJITA Tomonori 274b6aff669SJames Bottomley static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy) 275b6aff669SJames Bottomley { 276b6aff669SJames Bottomley struct request_queue *q; 277b6aff669SJames Bottomley 278b6aff669SJames Bottomley if (rphy) 279b6aff669SJames Bottomley q = rphy->q; 280b6aff669SJames Bottomley else 281b6aff669SJames Bottomley q = to_sas_host_attrs(shost)->q; 282b6aff669SJames Bottomley 283b6aff669SJames Bottomley if (!q) 284b6aff669SJames Bottomley return; 285b6aff669SJames Bottomley 286b6aff669SJames Bottomley bsg_unregister_queue(q); 287b6aff669SJames Bottomley } 288b6aff669SJames Bottomley 289c7ebbbceSChristoph Hellwig /* 290c7ebbbceSChristoph Hellwig * SAS host attributes 291c7ebbbceSChristoph Hellwig */ 292c7ebbbceSChristoph Hellwig 29337be6eebSJames Bottomley static int sas_host_setup(struct transport_container *tc, struct device *dev, 294ee959b00STony Jones struct device *cdev) 295c7ebbbceSChristoph Hellwig { 296c7ebbbceSChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(dev); 297c7ebbbceSChristoph Hellwig struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 298c7ebbbceSChristoph Hellwig 299c7ebbbceSChristoph Hellwig INIT_LIST_HEAD(&sas_host->rphy_list); 300e02f3f59SChristoph Hellwig mutex_init(&sas_host->lock); 301c7ebbbceSChristoph Hellwig sas_host->next_target_id = 0; 30279cb1819SJames Bottomley sas_host->next_expander_id = 0; 303c9fefeb2SJames Bottomley sas_host->next_port_id = 0; 3047aa68e80SFUJITA Tomonori 30539dca558SJames Bottomley if (sas_bsg_initialize(shost, NULL)) 3067aa68e80SFUJITA Tomonori dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", 3077aa68e80SFUJITA Tomonori shost->host_no); 3087aa68e80SFUJITA Tomonori 309c7ebbbceSChristoph Hellwig return 0; 310c7ebbbceSChristoph Hellwig } 311c7ebbbceSChristoph Hellwig 312b6aff669SJames Bottomley static int sas_host_remove(struct transport_container *tc, struct device *dev, 313ee959b00STony Jones struct device *cdev) 314b6aff669SJames Bottomley { 315b6aff669SJames Bottomley struct Scsi_Host *shost = dev_to_shost(dev); 316b6aff669SJames Bottomley 317b6aff669SJames Bottomley sas_bsg_remove(shost, NULL); 318b6aff669SJames Bottomley 319b6aff669SJames Bottomley return 0; 320b6aff669SJames Bottomley } 321b6aff669SJames Bottomley 322c7ebbbceSChristoph Hellwig static DECLARE_TRANSPORT_CLASS(sas_host_class, 323b6aff669SJames Bottomley "sas_host", sas_host_setup, sas_host_remove, NULL); 324c7ebbbceSChristoph Hellwig 325c7ebbbceSChristoph Hellwig static int sas_host_match(struct attribute_container *cont, 326c7ebbbceSChristoph Hellwig struct device *dev) 327c7ebbbceSChristoph Hellwig { 328c7ebbbceSChristoph Hellwig struct Scsi_Host *shost; 329c7ebbbceSChristoph Hellwig struct sas_internal *i; 330c7ebbbceSChristoph Hellwig 331c7ebbbceSChristoph Hellwig if (!scsi_is_host_device(dev)) 332c7ebbbceSChristoph Hellwig return 0; 333c7ebbbceSChristoph Hellwig shost = dev_to_shost(dev); 334c7ebbbceSChristoph Hellwig 335c7ebbbceSChristoph Hellwig if (!shost->transportt) 336c7ebbbceSChristoph Hellwig return 0; 337c7ebbbceSChristoph Hellwig if (shost->transportt->host_attrs.ac.class != 338c7ebbbceSChristoph Hellwig &sas_host_class.class) 339c7ebbbceSChristoph Hellwig return 0; 340c7ebbbceSChristoph Hellwig 341c7ebbbceSChristoph Hellwig i = to_sas_internal(shost->transportt); 342c7ebbbceSChristoph Hellwig return &i->t.host_attrs.ac == cont; 343c7ebbbceSChristoph Hellwig } 344c7ebbbceSChristoph Hellwig 345c7ebbbceSChristoph Hellwig static int do_sas_phy_delete(struct device *dev, void *data) 346c7ebbbceSChristoph Hellwig { 34765c92b09SJames Bottomley int pass = (int)(unsigned long)data; 34865c92b09SJames Bottomley 34965c92b09SJames Bottomley if (pass == 0 && scsi_is_sas_port(dev)) 35065c92b09SJames Bottomley sas_port_delete(dev_to_sas_port(dev)); 35165c92b09SJames Bottomley else if (pass == 1 && scsi_is_sas_phy(dev)) 352c7ebbbceSChristoph Hellwig sas_phy_delete(dev_to_phy(dev)); 353c7ebbbceSChristoph Hellwig return 0; 354c7ebbbceSChristoph Hellwig } 355c7ebbbceSChristoph Hellwig 356c7ebbbceSChristoph Hellwig /** 357eb44820cSRob Landley * sas_remove_children - tear down a devices SAS data structures 35865c92b09SJames Bottomley * @dev: device belonging to the sas object 35965c92b09SJames Bottomley * 36065c92b09SJames Bottomley * Removes all SAS PHYs and remote PHYs for a given object 36165c92b09SJames Bottomley */ 36265c92b09SJames Bottomley void sas_remove_children(struct device *dev) 36365c92b09SJames Bottomley { 36465c92b09SJames Bottomley device_for_each_child(dev, (void *)0, do_sas_phy_delete); 36565c92b09SJames Bottomley device_for_each_child(dev, (void *)1, do_sas_phy_delete); 36665c92b09SJames Bottomley } 36765c92b09SJames Bottomley EXPORT_SYMBOL(sas_remove_children); 36865c92b09SJames Bottomley 36965c92b09SJames Bottomley /** 370eb44820cSRob Landley * sas_remove_host - tear down a Scsi_Host's SAS data structures 371c7ebbbceSChristoph Hellwig * @shost: Scsi Host that is torn down 372c7ebbbceSChristoph Hellwig * 373c7ebbbceSChristoph Hellwig * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. 374c7ebbbceSChristoph Hellwig * Must be called just before scsi_remove_host for SAS HBAs. 375c7ebbbceSChristoph Hellwig */ 376c7ebbbceSChristoph Hellwig void sas_remove_host(struct Scsi_Host *shost) 377c7ebbbceSChristoph Hellwig { 37865c92b09SJames Bottomley sas_remove_children(&shost->shost_gendev); 379c7ebbbceSChristoph Hellwig } 380c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_remove_host); 381c7ebbbceSChristoph Hellwig 3820f88009dSJames Bottomley /** 383bcf508c1SJames Bottomley * sas_get_address - return the SAS address of the device 384bcf508c1SJames Bottomley * @sdev: scsi device 385bcf508c1SJames Bottomley * 386bcf508c1SJames Bottomley * Returns the SAS address of the scsi device 387bcf508c1SJames Bottomley */ 388bcf508c1SJames Bottomley u64 sas_get_address(struct scsi_device *sdev) 389bcf508c1SJames Bottomley { 390bcf508c1SJames Bottomley struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); 391bcf508c1SJames Bottomley 392bcf508c1SJames Bottomley return rdev->rphy.identify.sas_address; 393bcf508c1SJames Bottomley } 394bcf508c1SJames Bottomley EXPORT_SYMBOL(sas_get_address); 395bcf508c1SJames Bottomley 396bcf508c1SJames Bottomley /** 3970f88009dSJames Bottomley * sas_tlr_supported - checking TLR bit in vpd 0x90 3980f88009dSJames Bottomley * @sdev: scsi device struct 3990f88009dSJames Bottomley * 4000f88009dSJames Bottomley * Check Transport Layer Retries are supported or not. 4010f88009dSJames Bottomley * If vpd page 0x90 is present, TRL is supported. 4020f88009dSJames Bottomley * 4030f88009dSJames Bottomley */ 4040f88009dSJames Bottomley unsigned int 4050f88009dSJames Bottomley sas_tlr_supported(struct scsi_device *sdev) 4060f88009dSJames Bottomley { 4070f88009dSJames Bottomley const int vpd_len = 32; 4080f88009dSJames Bottomley struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); 4090f88009dSJames Bottomley char *buffer = kzalloc(vpd_len, GFP_KERNEL); 4100f88009dSJames Bottomley int ret = 0; 4110f88009dSJames Bottomley 4120f88009dSJames Bottomley if (scsi_get_vpd_page(sdev, 0x90, buffer, vpd_len)) 4130f88009dSJames Bottomley goto out; 4140f88009dSJames Bottomley 4150f88009dSJames Bottomley /* 4160f88009dSJames Bottomley * Magic numbers: the VPD Protocol page (0x90) 4170f88009dSJames Bottomley * has a 4 byte header and then one entry per device port 4180f88009dSJames Bottomley * the TLR bit is at offset 8 on each port entry 4190f88009dSJames Bottomley * if we take the first port, that's at total offset 12 4200f88009dSJames Bottomley */ 4210f88009dSJames Bottomley ret = buffer[12] & 0x01; 4220f88009dSJames Bottomley 4230f88009dSJames Bottomley out: 4240f88009dSJames Bottomley kfree(buffer); 4250f88009dSJames Bottomley rdev->tlr_supported = ret; 4260f88009dSJames Bottomley return ret; 4270f88009dSJames Bottomley 4280f88009dSJames Bottomley } 4290f88009dSJames Bottomley EXPORT_SYMBOL_GPL(sas_tlr_supported); 4300f88009dSJames Bottomley 4310f88009dSJames Bottomley /** 4320f88009dSJames Bottomley * sas_disable_tlr - setting TLR flags 4330f88009dSJames Bottomley * @sdev: scsi device struct 4340f88009dSJames Bottomley * 4350f88009dSJames Bottomley * Seting tlr_enabled flag to 0. 4360f88009dSJames Bottomley * 4370f88009dSJames Bottomley */ 4380f88009dSJames Bottomley void 4390f88009dSJames Bottomley sas_disable_tlr(struct scsi_device *sdev) 4400f88009dSJames Bottomley { 4410f88009dSJames Bottomley struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); 4420f88009dSJames Bottomley 4430f88009dSJames Bottomley rdev->tlr_enabled = 0; 4440f88009dSJames Bottomley } 4450f88009dSJames Bottomley EXPORT_SYMBOL_GPL(sas_disable_tlr); 4460f88009dSJames Bottomley 4470f88009dSJames Bottomley /** 4480f88009dSJames Bottomley * sas_enable_tlr - setting TLR flags 4490f88009dSJames Bottomley * @sdev: scsi device struct 4500f88009dSJames Bottomley * 4510f88009dSJames Bottomley * Seting tlr_enabled flag 1. 4520f88009dSJames Bottomley * 4530f88009dSJames Bottomley */ 4540f88009dSJames Bottomley void sas_enable_tlr(struct scsi_device *sdev) 4550f88009dSJames Bottomley { 4560f88009dSJames Bottomley unsigned int tlr_supported = 0; 4570f88009dSJames Bottomley tlr_supported = sas_tlr_supported(sdev); 4580f88009dSJames Bottomley 4590f88009dSJames Bottomley if (tlr_supported) { 4600f88009dSJames Bottomley struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); 4610f88009dSJames Bottomley 4620f88009dSJames Bottomley rdev->tlr_enabled = 1; 4630f88009dSJames Bottomley } 4640f88009dSJames Bottomley 4650f88009dSJames Bottomley return; 4660f88009dSJames Bottomley } 4670f88009dSJames Bottomley EXPORT_SYMBOL_GPL(sas_enable_tlr); 4680f88009dSJames Bottomley 4690f88009dSJames Bottomley unsigned int sas_is_tlr_enabled(struct scsi_device *sdev) 4700f88009dSJames Bottomley { 4710f88009dSJames Bottomley struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); 4720f88009dSJames Bottomley return rdev->tlr_enabled; 4730f88009dSJames Bottomley } 4740f88009dSJames Bottomley EXPORT_SYMBOL_GPL(sas_is_tlr_enabled); 475c7ebbbceSChristoph Hellwig 476c7ebbbceSChristoph Hellwig /* 47765c92b09SJames Bottomley * SAS Phy attributes 478c7ebbbceSChristoph Hellwig */ 479c7ebbbceSChristoph Hellwig 480c7ebbbceSChristoph Hellwig #define sas_phy_show_simple(field, name, format_string, cast) \ 481c7ebbbceSChristoph Hellwig static ssize_t \ 482ee959b00STony Jones show_sas_phy_##name(struct device *dev, \ 483ee959b00STony Jones struct device_attribute *attr, char *buf) \ 484c7ebbbceSChristoph Hellwig { \ 485ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); \ 486c7ebbbceSChristoph Hellwig \ 487c7ebbbceSChristoph Hellwig return snprintf(buf, 20, format_string, cast phy->field); \ 488c7ebbbceSChristoph Hellwig } 489c7ebbbceSChristoph Hellwig 490c7ebbbceSChristoph Hellwig #define sas_phy_simple_attr(field, name, format_string, type) \ 491c7ebbbceSChristoph Hellwig sas_phy_show_simple(field, name, format_string, (type)) \ 492ee959b00STony Jones static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) 493c7ebbbceSChristoph Hellwig 494c7ebbbceSChristoph Hellwig #define sas_phy_show_protocol(field, name) \ 495c7ebbbceSChristoph Hellwig static ssize_t \ 496ee959b00STony Jones show_sas_phy_##name(struct device *dev, \ 497ee959b00STony Jones struct device_attribute *attr, char *buf) \ 498c7ebbbceSChristoph Hellwig { \ 499ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); \ 500c7ebbbceSChristoph Hellwig \ 501c7ebbbceSChristoph Hellwig if (!phy->field) \ 502c7ebbbceSChristoph Hellwig return snprintf(buf, 20, "none\n"); \ 503c7ebbbceSChristoph Hellwig return get_sas_protocol_names(phy->field, buf); \ 504c7ebbbceSChristoph Hellwig } 505c7ebbbceSChristoph Hellwig 506c7ebbbceSChristoph Hellwig #define sas_phy_protocol_attr(field, name) \ 507c7ebbbceSChristoph Hellwig sas_phy_show_protocol(field, name) \ 508ee959b00STony Jones static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) 509c7ebbbceSChristoph Hellwig 510c7ebbbceSChristoph Hellwig #define sas_phy_show_linkspeed(field) \ 511c7ebbbceSChristoph Hellwig static ssize_t \ 512ee959b00STony Jones show_sas_phy_##field(struct device *dev, \ 513ee959b00STony Jones struct device_attribute *attr, char *buf) \ 514c7ebbbceSChristoph Hellwig { \ 515ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); \ 516c7ebbbceSChristoph Hellwig \ 517c7ebbbceSChristoph Hellwig return get_sas_linkspeed_names(phy->field, buf); \ 518c7ebbbceSChristoph Hellwig } 519c7ebbbceSChristoph Hellwig 520d24e1eebSJames Bottomley /* Fudge to tell if we're minimum or maximum */ 521d24e1eebSJames Bottomley #define sas_phy_store_linkspeed(field) \ 522d24e1eebSJames Bottomley static ssize_t \ 523ee959b00STony Jones store_sas_phy_##field(struct device *dev, \ 524ee959b00STony Jones struct device_attribute *attr, \ 525ee959b00STony Jones const char *buf, size_t count) \ 526d24e1eebSJames Bottomley { \ 527ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); \ 528d24e1eebSJames Bottomley struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ 529d24e1eebSJames Bottomley struct sas_internal *i = to_sas_internal(shost->transportt); \ 530d24e1eebSJames Bottomley u32 value; \ 531d24e1eebSJames Bottomley struct sas_phy_linkrates rates = {0}; \ 532d24e1eebSJames Bottomley int error; \ 533d24e1eebSJames Bottomley \ 534d24e1eebSJames Bottomley error = set_sas_linkspeed_names(&value, buf); \ 535d24e1eebSJames Bottomley if (error) \ 536d24e1eebSJames Bottomley return error; \ 537d24e1eebSJames Bottomley rates.field = value; \ 538d24e1eebSJames Bottomley error = i->f->set_phy_speed(phy, &rates); \ 539d24e1eebSJames Bottomley \ 540d24e1eebSJames Bottomley return error ? error : count; \ 541d24e1eebSJames Bottomley } 542d24e1eebSJames Bottomley 543d24e1eebSJames Bottomley #define sas_phy_linkspeed_rw_attr(field) \ 544d24e1eebSJames Bottomley sas_phy_show_linkspeed(field) \ 545d24e1eebSJames Bottomley sas_phy_store_linkspeed(field) \ 546ee959b00STony Jones static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ 547d24e1eebSJames Bottomley store_sas_phy_##field) 548d24e1eebSJames Bottomley 549c7ebbbceSChristoph Hellwig #define sas_phy_linkspeed_attr(field) \ 550c7ebbbceSChristoph Hellwig sas_phy_show_linkspeed(field) \ 551ee959b00STony Jones static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) 552c7ebbbceSChristoph Hellwig 553d24e1eebSJames Bottomley 554c3ee74c4SChristoph Hellwig #define sas_phy_show_linkerror(field) \ 555c3ee74c4SChristoph Hellwig static ssize_t \ 556ee959b00STony Jones show_sas_phy_##field(struct device *dev, \ 557ee959b00STony Jones struct device_attribute *attr, char *buf) \ 558c3ee74c4SChristoph Hellwig { \ 559ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); \ 560c3ee74c4SChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ 561c3ee74c4SChristoph Hellwig struct sas_internal *i = to_sas_internal(shost->transportt); \ 562c3ee74c4SChristoph Hellwig int error; \ 563c3ee74c4SChristoph Hellwig \ 564dd9fbb52SJames Bottomley error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ 565c3ee74c4SChristoph Hellwig if (error) \ 566c3ee74c4SChristoph Hellwig return error; \ 567c3ee74c4SChristoph Hellwig return snprintf(buf, 20, "%u\n", phy->field); \ 568c3ee74c4SChristoph Hellwig } 569c3ee74c4SChristoph Hellwig 570c3ee74c4SChristoph Hellwig #define sas_phy_linkerror_attr(field) \ 571c3ee74c4SChristoph Hellwig sas_phy_show_linkerror(field) \ 572ee959b00STony Jones static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) 573c3ee74c4SChristoph Hellwig 574c3ee74c4SChristoph Hellwig 575c7ebbbceSChristoph Hellwig static ssize_t 576ee959b00STony Jones show_sas_device_type(struct device *dev, 577ee959b00STony Jones struct device_attribute *attr, char *buf) 578c7ebbbceSChristoph Hellwig { 579ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); 580c7ebbbceSChristoph Hellwig 581c7ebbbceSChristoph Hellwig if (!phy->identify.device_type) 582c7ebbbceSChristoph Hellwig return snprintf(buf, 20, "none\n"); 583c7ebbbceSChristoph Hellwig return get_sas_device_type_names(phy->identify.device_type, buf); 584c7ebbbceSChristoph Hellwig } 585ee959b00STony Jones static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); 586c7ebbbceSChristoph Hellwig 587ee959b00STony Jones static ssize_t do_sas_phy_enable(struct device *dev, 588acbf167dSDarrick J. Wong size_t count, int enable) 589acbf167dSDarrick J. Wong { 590ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); 591acbf167dSDarrick J. Wong struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 592acbf167dSDarrick J. Wong struct sas_internal *i = to_sas_internal(shost->transportt); 593acbf167dSDarrick J. Wong int error; 594acbf167dSDarrick J. Wong 595acbf167dSDarrick J. Wong error = i->f->phy_enable(phy, enable); 596acbf167dSDarrick J. Wong if (error) 597acbf167dSDarrick J. Wong return error; 598acbf167dSDarrick J. Wong phy->enabled = enable; 599acbf167dSDarrick J. Wong return count; 600acbf167dSDarrick J. Wong }; 601acbf167dSDarrick J. Wong 602ee959b00STony Jones static ssize_t 603ee959b00STony Jones store_sas_phy_enable(struct device *dev, struct device_attribute *attr, 604acbf167dSDarrick J. Wong const char *buf, size_t count) 605acbf167dSDarrick J. Wong { 606acbf167dSDarrick J. Wong if (count < 1) 607acbf167dSDarrick J. Wong return -EINVAL; 608acbf167dSDarrick J. Wong 609acbf167dSDarrick J. Wong switch (buf[0]) { 610acbf167dSDarrick J. Wong case '0': 611ee959b00STony Jones do_sas_phy_enable(dev, count, 0); 612acbf167dSDarrick J. Wong break; 613acbf167dSDarrick J. Wong case '1': 614ee959b00STony Jones do_sas_phy_enable(dev, count, 1); 615acbf167dSDarrick J. Wong break; 616acbf167dSDarrick J. Wong default: 617acbf167dSDarrick J. Wong return -EINVAL; 618acbf167dSDarrick J. Wong } 619acbf167dSDarrick J. Wong 620acbf167dSDarrick J. Wong return count; 621acbf167dSDarrick J. Wong } 622acbf167dSDarrick J. Wong 623ee959b00STony Jones static ssize_t 624ee959b00STony Jones show_sas_phy_enable(struct device *dev, struct device_attribute *attr, 625ee959b00STony Jones char *buf) 626acbf167dSDarrick J. Wong { 627ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); 628acbf167dSDarrick J. Wong 629acbf167dSDarrick J. Wong return snprintf(buf, 20, "%d", phy->enabled); 630acbf167dSDarrick J. Wong } 631acbf167dSDarrick J. Wong 632ee959b00STony Jones static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, 633acbf167dSDarrick J. Wong store_sas_phy_enable); 634acbf167dSDarrick J. Wong 635ee959b00STony Jones static ssize_t 636ee959b00STony Jones do_sas_phy_reset(struct device *dev, size_t count, int hard_reset) 63707ba3a95SChristoph Hellwig { 638ee959b00STony Jones struct sas_phy *phy = transport_class_to_phy(dev); 63907ba3a95SChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 64007ba3a95SChristoph Hellwig struct sas_internal *i = to_sas_internal(shost->transportt); 64107ba3a95SChristoph Hellwig int error; 64207ba3a95SChristoph Hellwig 64307ba3a95SChristoph Hellwig error = i->f->phy_reset(phy, hard_reset); 64407ba3a95SChristoph Hellwig if (error) 64507ba3a95SChristoph Hellwig return error; 64616d3db1bSDan Williams phy->enabled = 1; 64707ba3a95SChristoph Hellwig return count; 64807ba3a95SChristoph Hellwig }; 64907ba3a95SChristoph Hellwig 650ee959b00STony Jones static ssize_t 651ee959b00STony Jones store_sas_link_reset(struct device *dev, struct device_attribute *attr, 65207ba3a95SChristoph Hellwig const char *buf, size_t count) 65307ba3a95SChristoph Hellwig { 654ee959b00STony Jones return do_sas_phy_reset(dev, count, 0); 65507ba3a95SChristoph Hellwig } 656ee959b00STony Jones static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); 65707ba3a95SChristoph Hellwig 658ee959b00STony Jones static ssize_t 659ee959b00STony Jones store_sas_hard_reset(struct device *dev, struct device_attribute *attr, 66007ba3a95SChristoph Hellwig const char *buf, size_t count) 66107ba3a95SChristoph Hellwig { 662ee959b00STony Jones return do_sas_phy_reset(dev, count, 1); 66307ba3a95SChristoph Hellwig } 664ee959b00STony Jones static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); 66507ba3a95SChristoph Hellwig 666c7ebbbceSChristoph Hellwig sas_phy_protocol_attr(identify.initiator_port_protocols, 667c7ebbbceSChristoph Hellwig initiator_port_protocols); 668c7ebbbceSChristoph Hellwig sas_phy_protocol_attr(identify.target_port_protocols, 669c7ebbbceSChristoph Hellwig target_port_protocols); 670c7ebbbceSChristoph Hellwig sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", 671c7ebbbceSChristoph Hellwig unsigned long long); 672c7ebbbceSChristoph Hellwig sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); 673c9fefeb2SJames Bottomley //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); 674c7ebbbceSChristoph Hellwig sas_phy_linkspeed_attr(negotiated_linkrate); 675c7ebbbceSChristoph Hellwig sas_phy_linkspeed_attr(minimum_linkrate_hw); 676d24e1eebSJames Bottomley sas_phy_linkspeed_rw_attr(minimum_linkrate); 677c7ebbbceSChristoph Hellwig sas_phy_linkspeed_attr(maximum_linkrate_hw); 678d24e1eebSJames Bottomley sas_phy_linkspeed_rw_attr(maximum_linkrate); 679c3ee74c4SChristoph Hellwig sas_phy_linkerror_attr(invalid_dword_count); 680c3ee74c4SChristoph Hellwig sas_phy_linkerror_attr(running_disparity_error_count); 681c3ee74c4SChristoph Hellwig sas_phy_linkerror_attr(loss_of_dword_sync_count); 682c3ee74c4SChristoph Hellwig sas_phy_linkerror_attr(phy_reset_problem_count); 683c7ebbbceSChristoph Hellwig 6840b3e09daSDan Williams static int sas_phy_setup(struct transport_container *tc, struct device *dev, 6850b3e09daSDan Williams struct device *cdev) 6860b3e09daSDan Williams { 6870b3e09daSDan Williams struct sas_phy *phy = dev_to_phy(dev); 6880b3e09daSDan Williams struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 6890b3e09daSDan Williams struct sas_internal *i = to_sas_internal(shost->transportt); 6900b3e09daSDan Williams 6910b3e09daSDan Williams if (i->f->phy_setup) 6920b3e09daSDan Williams i->f->phy_setup(phy); 6930b3e09daSDan Williams 6940b3e09daSDan Williams return 0; 6950b3e09daSDan Williams } 696c7ebbbceSChristoph Hellwig 697c7ebbbceSChristoph Hellwig static DECLARE_TRANSPORT_CLASS(sas_phy_class, 6980b3e09daSDan Williams "sas_phy", sas_phy_setup, NULL, NULL); 699c7ebbbceSChristoph Hellwig 700c7ebbbceSChristoph Hellwig static int sas_phy_match(struct attribute_container *cont, struct device *dev) 701c7ebbbceSChristoph Hellwig { 702c7ebbbceSChristoph Hellwig struct Scsi_Host *shost; 703c7ebbbceSChristoph Hellwig struct sas_internal *i; 704c7ebbbceSChristoph Hellwig 705c7ebbbceSChristoph Hellwig if (!scsi_is_sas_phy(dev)) 706c7ebbbceSChristoph Hellwig return 0; 707c7ebbbceSChristoph Hellwig shost = dev_to_shost(dev->parent); 708c7ebbbceSChristoph Hellwig 709c7ebbbceSChristoph Hellwig if (!shost->transportt) 710c7ebbbceSChristoph Hellwig return 0; 711c7ebbbceSChristoph Hellwig if (shost->transportt->host_attrs.ac.class != 712c7ebbbceSChristoph Hellwig &sas_host_class.class) 713c7ebbbceSChristoph Hellwig return 0; 714c7ebbbceSChristoph Hellwig 715c7ebbbceSChristoph Hellwig i = to_sas_internal(shost->transportt); 716c7ebbbceSChristoph Hellwig return &i->phy_attr_cont.ac == cont; 717c7ebbbceSChristoph Hellwig } 718c7ebbbceSChristoph Hellwig 719c7ebbbceSChristoph Hellwig static void sas_phy_release(struct device *dev) 720c7ebbbceSChristoph Hellwig { 721c7ebbbceSChristoph Hellwig struct sas_phy *phy = dev_to_phy(dev); 7220b3e09daSDan Williams struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 7230b3e09daSDan Williams struct sas_internal *i = to_sas_internal(shost->transportt); 724c7ebbbceSChristoph Hellwig 7250b3e09daSDan Williams if (i->f->phy_release) 7260b3e09daSDan Williams i->f->phy_release(phy); 727c7ebbbceSChristoph Hellwig put_device(dev->parent); 728c7ebbbceSChristoph Hellwig kfree(phy); 729c7ebbbceSChristoph Hellwig } 730c7ebbbceSChristoph Hellwig 731c7ebbbceSChristoph Hellwig /** 732eb44820cSRob Landley * sas_phy_alloc - allocates and initialize a SAS PHY structure 733c7ebbbceSChristoph Hellwig * @parent: Parent device 734d99ca418SMoore, Eric * @number: Phy index 735c7ebbbceSChristoph Hellwig * 736c7ebbbceSChristoph Hellwig * Allocates an SAS PHY structure. It will be added in the device tree 737c7ebbbceSChristoph Hellwig * below the device specified by @parent, which has to be either a Scsi_Host 738c7ebbbceSChristoph Hellwig * or sas_rphy. 739c7ebbbceSChristoph Hellwig * 740c7ebbbceSChristoph Hellwig * Returns: 741c7ebbbceSChristoph Hellwig * SAS PHY allocated or %NULL if the allocation failed. 742c7ebbbceSChristoph Hellwig */ 743c7ebbbceSChristoph Hellwig struct sas_phy *sas_phy_alloc(struct device *parent, int number) 744c7ebbbceSChristoph Hellwig { 745c7ebbbceSChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(parent); 746c7ebbbceSChristoph Hellwig struct sas_phy *phy; 747c7ebbbceSChristoph Hellwig 74824669f75SJes Sorensen phy = kzalloc(sizeof(*phy), GFP_KERNEL); 749c7ebbbceSChristoph Hellwig if (!phy) 750c7ebbbceSChristoph Hellwig return NULL; 751c7ebbbceSChristoph Hellwig 752c7ebbbceSChristoph Hellwig phy->number = number; 753acbf167dSDarrick J. Wong phy->enabled = 1; 754c7ebbbceSChristoph Hellwig 755c7ebbbceSChristoph Hellwig device_initialize(&phy->dev); 756c7ebbbceSChristoph Hellwig phy->dev.parent = get_device(parent); 757c7ebbbceSChristoph Hellwig phy->dev.release = sas_phy_release; 75865c92b09SJames Bottomley INIT_LIST_HEAD(&phy->port_siblings); 75979cb1819SJames Bottomley if (scsi_is_sas_expander_device(parent)) { 76079cb1819SJames Bottomley struct sas_rphy *rphy = dev_to_rphy(parent); 76171610f55SKay Sievers dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no, 76279cb1819SJames Bottomley rphy->scsi_target_id, number); 76379cb1819SJames Bottomley } else 76471610f55SKay Sievers dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number); 765c7ebbbceSChristoph Hellwig 766c7ebbbceSChristoph Hellwig transport_setup_device(&phy->dev); 767c7ebbbceSChristoph Hellwig 768c7ebbbceSChristoph Hellwig return phy; 769c7ebbbceSChristoph Hellwig } 770c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_phy_alloc); 771c7ebbbceSChristoph Hellwig 772c7ebbbceSChristoph Hellwig /** 773eb44820cSRob Landley * sas_phy_add - add a SAS PHY to the device hierarchy 774c7ebbbceSChristoph Hellwig * @phy: The PHY to be added 775c7ebbbceSChristoph Hellwig * 776c7ebbbceSChristoph Hellwig * Publishes a SAS PHY to the rest of the system. 777c7ebbbceSChristoph Hellwig */ 778c7ebbbceSChristoph Hellwig int sas_phy_add(struct sas_phy *phy) 779c7ebbbceSChristoph Hellwig { 780c7ebbbceSChristoph Hellwig int error; 781c7ebbbceSChristoph Hellwig 782c7ebbbceSChristoph Hellwig error = device_add(&phy->dev); 783c7ebbbceSChristoph Hellwig if (!error) { 784c7ebbbceSChristoph Hellwig transport_add_device(&phy->dev); 785c7ebbbceSChristoph Hellwig transport_configure_device(&phy->dev); 786c7ebbbceSChristoph Hellwig } 787c7ebbbceSChristoph Hellwig 788c7ebbbceSChristoph Hellwig return error; 789c7ebbbceSChristoph Hellwig } 790c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_phy_add); 791c7ebbbceSChristoph Hellwig 792c7ebbbceSChristoph Hellwig /** 793eb44820cSRob Landley * sas_phy_free - free a SAS PHY 794c7ebbbceSChristoph Hellwig * @phy: SAS PHY to free 795c7ebbbceSChristoph Hellwig * 796c7ebbbceSChristoph Hellwig * Frees the specified SAS PHY. 797c7ebbbceSChristoph Hellwig * 798c7ebbbceSChristoph Hellwig * Note: 799c7ebbbceSChristoph Hellwig * This function must only be called on a PHY that has not 800af901ca1SAndré Goddard Rosa * successfully been added using sas_phy_add(). 801c7ebbbceSChristoph Hellwig */ 802c7ebbbceSChristoph Hellwig void sas_phy_free(struct sas_phy *phy) 803c7ebbbceSChristoph Hellwig { 804c7ebbbceSChristoph Hellwig transport_destroy_device(&phy->dev); 80592aab646SMike Anderson put_device(&phy->dev); 806c7ebbbceSChristoph Hellwig } 807c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_phy_free); 808c7ebbbceSChristoph Hellwig 809c7ebbbceSChristoph Hellwig /** 810eb44820cSRob Landley * sas_phy_delete - remove SAS PHY 811c7ebbbceSChristoph Hellwig * @phy: SAS PHY to remove 812c7ebbbceSChristoph Hellwig * 813c7ebbbceSChristoph Hellwig * Removes the specified SAS PHY. If the SAS PHY has an 814c7ebbbceSChristoph Hellwig * associated remote PHY it is removed before. 815c7ebbbceSChristoph Hellwig */ 816c7ebbbceSChristoph Hellwig void 817c7ebbbceSChristoph Hellwig sas_phy_delete(struct sas_phy *phy) 818c7ebbbceSChristoph Hellwig { 819c7ebbbceSChristoph Hellwig struct device *dev = &phy->dev; 820c7ebbbceSChristoph Hellwig 82165c92b09SJames Bottomley /* this happens if the phy is still part of a port when deleted */ 82265c92b09SJames Bottomley BUG_ON(!list_empty(&phy->port_siblings)); 823c7ebbbceSChristoph Hellwig 824c7ebbbceSChristoph Hellwig transport_remove_device(dev); 825c7ebbbceSChristoph Hellwig device_del(dev); 826c7ebbbceSChristoph Hellwig transport_destroy_device(dev); 82792aab646SMike Anderson put_device(dev); 828c7ebbbceSChristoph Hellwig } 829c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_phy_delete); 830c7ebbbceSChristoph Hellwig 831c7ebbbceSChristoph Hellwig /** 832eb44820cSRob Landley * scsi_is_sas_phy - check if a struct device represents a SAS PHY 833c7ebbbceSChristoph Hellwig * @dev: device to check 834c7ebbbceSChristoph Hellwig * 835c7ebbbceSChristoph Hellwig * Returns: 836c7ebbbceSChristoph Hellwig * %1 if the device represents a SAS PHY, %0 else 837c7ebbbceSChristoph Hellwig */ 838c7ebbbceSChristoph Hellwig int scsi_is_sas_phy(const struct device *dev) 839c7ebbbceSChristoph Hellwig { 840c7ebbbceSChristoph Hellwig return dev->release == sas_phy_release; 841c7ebbbceSChristoph Hellwig } 842c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(scsi_is_sas_phy); 843c7ebbbceSChristoph Hellwig 844c7ebbbceSChristoph Hellwig /* 84565c92b09SJames Bottomley * SAS Port attributes 84665c92b09SJames Bottomley */ 84765c92b09SJames Bottomley #define sas_port_show_simple(field, name, format_string, cast) \ 84865c92b09SJames Bottomley static ssize_t \ 849ee959b00STony Jones show_sas_port_##name(struct device *dev, \ 850ee959b00STony Jones struct device_attribute *attr, char *buf) \ 85165c92b09SJames Bottomley { \ 852ee959b00STony Jones struct sas_port *port = transport_class_to_sas_port(dev); \ 85365c92b09SJames Bottomley \ 85465c92b09SJames Bottomley return snprintf(buf, 20, format_string, cast port->field); \ 85565c92b09SJames Bottomley } 85665c92b09SJames Bottomley 85765c92b09SJames Bottomley #define sas_port_simple_attr(field, name, format_string, type) \ 85865c92b09SJames Bottomley sas_port_show_simple(field, name, format_string, (type)) \ 859ee959b00STony Jones static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) 86065c92b09SJames Bottomley 86165c92b09SJames Bottomley sas_port_simple_attr(num_phys, num_phys, "%d\n", int); 86265c92b09SJames Bottomley 86365c92b09SJames Bottomley static DECLARE_TRANSPORT_CLASS(sas_port_class, 86465c92b09SJames Bottomley "sas_port", NULL, NULL, NULL); 86565c92b09SJames Bottomley 86665c92b09SJames Bottomley static int sas_port_match(struct attribute_container *cont, struct device *dev) 86765c92b09SJames Bottomley { 86865c92b09SJames Bottomley struct Scsi_Host *shost; 86965c92b09SJames Bottomley struct sas_internal *i; 87065c92b09SJames Bottomley 87165c92b09SJames Bottomley if (!scsi_is_sas_port(dev)) 87265c92b09SJames Bottomley return 0; 87365c92b09SJames Bottomley shost = dev_to_shost(dev->parent); 87465c92b09SJames Bottomley 87565c92b09SJames Bottomley if (!shost->transportt) 87665c92b09SJames Bottomley return 0; 87765c92b09SJames Bottomley if (shost->transportt->host_attrs.ac.class != 87865c92b09SJames Bottomley &sas_host_class.class) 87965c92b09SJames Bottomley return 0; 88065c92b09SJames Bottomley 88165c92b09SJames Bottomley i = to_sas_internal(shost->transportt); 88265c92b09SJames Bottomley return &i->port_attr_cont.ac == cont; 88365c92b09SJames Bottomley } 88465c92b09SJames Bottomley 88565c92b09SJames Bottomley 88665c92b09SJames Bottomley static void sas_port_release(struct device *dev) 88765c92b09SJames Bottomley { 88865c92b09SJames Bottomley struct sas_port *port = dev_to_sas_port(dev); 88965c92b09SJames Bottomley 89065c92b09SJames Bottomley BUG_ON(!list_empty(&port->phy_list)); 89165c92b09SJames Bottomley 89265c92b09SJames Bottomley put_device(dev->parent); 89365c92b09SJames Bottomley kfree(port); 89465c92b09SJames Bottomley } 89565c92b09SJames Bottomley 89665c92b09SJames Bottomley static void sas_port_create_link(struct sas_port *port, 89765c92b09SJames Bottomley struct sas_phy *phy) 89865c92b09SJames Bottomley { 89921434966SDarrick J. Wong int res; 90021434966SDarrick J. Wong 90121434966SDarrick J. Wong res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, 90271610f55SKay Sievers dev_name(&phy->dev)); 90321434966SDarrick J. Wong if (res) 90421434966SDarrick J. Wong goto err; 90521434966SDarrick J. Wong res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); 90621434966SDarrick J. Wong if (res) 90721434966SDarrick J. Wong goto err; 90821434966SDarrick J. Wong return; 90921434966SDarrick J. Wong err: 91021434966SDarrick J. Wong printk(KERN_ERR "%s: Cannot create port links, err=%d\n", 911cadbd4a5SHarvey Harrison __func__, res); 91265c92b09SJames Bottomley } 91365c92b09SJames Bottomley 91465c92b09SJames Bottomley static void sas_port_delete_link(struct sas_port *port, 91565c92b09SJames Bottomley struct sas_phy *phy) 91665c92b09SJames Bottomley { 91771610f55SKay Sievers sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev)); 91865c92b09SJames Bottomley sysfs_remove_link(&phy->dev.kobj, "port"); 91965c92b09SJames Bottomley } 92065c92b09SJames Bottomley 92165c92b09SJames Bottomley /** sas_port_alloc - allocate and initialize a SAS port structure 92265c92b09SJames Bottomley * 92365c92b09SJames Bottomley * @parent: parent device 92465c92b09SJames Bottomley * @port_id: port number 92565c92b09SJames Bottomley * 92665c92b09SJames Bottomley * Allocates a SAS port structure. It will be added to the device tree 92765c92b09SJames Bottomley * below the device specified by @parent which must be either a Scsi_Host 92865c92b09SJames Bottomley * or a sas_expander_device. 92965c92b09SJames Bottomley * 93065c92b09SJames Bottomley * Returns %NULL on error 93165c92b09SJames Bottomley */ 93265c92b09SJames Bottomley struct sas_port *sas_port_alloc(struct device *parent, int port_id) 93365c92b09SJames Bottomley { 93465c92b09SJames Bottomley struct Scsi_Host *shost = dev_to_shost(parent); 93565c92b09SJames Bottomley struct sas_port *port; 93665c92b09SJames Bottomley 93765c92b09SJames Bottomley port = kzalloc(sizeof(*port), GFP_KERNEL); 93865c92b09SJames Bottomley if (!port) 93965c92b09SJames Bottomley return NULL; 94065c92b09SJames Bottomley 94165c92b09SJames Bottomley port->port_identifier = port_id; 94265c92b09SJames Bottomley 94365c92b09SJames Bottomley device_initialize(&port->dev); 94465c92b09SJames Bottomley 94565c92b09SJames Bottomley port->dev.parent = get_device(parent); 94665c92b09SJames Bottomley port->dev.release = sas_port_release; 94765c92b09SJames Bottomley 94865c92b09SJames Bottomley mutex_init(&port->phy_list_mutex); 94965c92b09SJames Bottomley INIT_LIST_HEAD(&port->phy_list); 95065c92b09SJames Bottomley 95165c92b09SJames Bottomley if (scsi_is_sas_expander_device(parent)) { 95265c92b09SJames Bottomley struct sas_rphy *rphy = dev_to_rphy(parent); 95371610f55SKay Sievers dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no, 95465c92b09SJames Bottomley rphy->scsi_target_id, port->port_identifier); 95565c92b09SJames Bottomley } else 95671610f55SKay Sievers dev_set_name(&port->dev, "port-%d:%d", shost->host_no, 95765c92b09SJames Bottomley port->port_identifier); 95865c92b09SJames Bottomley 95965c92b09SJames Bottomley transport_setup_device(&port->dev); 96065c92b09SJames Bottomley 96165c92b09SJames Bottomley return port; 96265c92b09SJames Bottomley } 96365c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_alloc); 96465c92b09SJames Bottomley 965c9fefeb2SJames Bottomley /** sas_port_alloc_num - allocate and initialize a SAS port structure 966c9fefeb2SJames Bottomley * 967c9fefeb2SJames Bottomley * @parent: parent device 968c9fefeb2SJames Bottomley * 969c9fefeb2SJames Bottomley * Allocates a SAS port structure and a number to go with it. This 970c9fefeb2SJames Bottomley * interface is really for adapters where the port number has no 971c9fefeb2SJames Bottomley * meansing, so the sas class should manage them. It will be added to 972c9fefeb2SJames Bottomley * the device tree below the device specified by @parent which must be 973c9fefeb2SJames Bottomley * either a Scsi_Host or a sas_expander_device. 974c9fefeb2SJames Bottomley * 975c9fefeb2SJames Bottomley * Returns %NULL on error 976c9fefeb2SJames Bottomley */ 977c9fefeb2SJames Bottomley struct sas_port *sas_port_alloc_num(struct device *parent) 978c9fefeb2SJames Bottomley { 979c9fefeb2SJames Bottomley int index; 980c9fefeb2SJames Bottomley struct Scsi_Host *shost = dev_to_shost(parent); 981c9fefeb2SJames Bottomley struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 982c9fefeb2SJames Bottomley 983c9fefeb2SJames Bottomley /* FIXME: use idr for this eventually */ 984c9fefeb2SJames Bottomley mutex_lock(&sas_host->lock); 985c9fefeb2SJames Bottomley if (scsi_is_sas_expander_device(parent)) { 986c9fefeb2SJames Bottomley struct sas_rphy *rphy = dev_to_rphy(parent); 987c9fefeb2SJames Bottomley struct sas_expander_device *exp = rphy_to_expander_device(rphy); 988c9fefeb2SJames Bottomley 989c9fefeb2SJames Bottomley index = exp->next_port_id++; 990c9fefeb2SJames Bottomley } else 991c9fefeb2SJames Bottomley index = sas_host->next_port_id++; 992c9fefeb2SJames Bottomley mutex_unlock(&sas_host->lock); 993c9fefeb2SJames Bottomley return sas_port_alloc(parent, index); 994c9fefeb2SJames Bottomley } 995c9fefeb2SJames Bottomley EXPORT_SYMBOL(sas_port_alloc_num); 996c9fefeb2SJames Bottomley 99765c92b09SJames Bottomley /** 99865c92b09SJames Bottomley * sas_port_add - add a SAS port to the device hierarchy 99965c92b09SJames Bottomley * @port: port to be added 100065c92b09SJames Bottomley * 100165c92b09SJames Bottomley * publishes a port to the rest of the system 100265c92b09SJames Bottomley */ 100365c92b09SJames Bottomley int sas_port_add(struct sas_port *port) 100465c92b09SJames Bottomley { 100565c92b09SJames Bottomley int error; 100665c92b09SJames Bottomley 100765c92b09SJames Bottomley /* No phys should be added until this is made visible */ 100865c92b09SJames Bottomley BUG_ON(!list_empty(&port->phy_list)); 100965c92b09SJames Bottomley 101065c92b09SJames Bottomley error = device_add(&port->dev); 101165c92b09SJames Bottomley 101265c92b09SJames Bottomley if (error) 101365c92b09SJames Bottomley return error; 101465c92b09SJames Bottomley 101565c92b09SJames Bottomley transport_add_device(&port->dev); 101665c92b09SJames Bottomley transport_configure_device(&port->dev); 101765c92b09SJames Bottomley 101865c92b09SJames Bottomley return 0; 101965c92b09SJames Bottomley } 102065c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_add); 102165c92b09SJames Bottomley 102265c92b09SJames Bottomley /** 1023eb44820cSRob Landley * sas_port_free - free a SAS PORT 102465c92b09SJames Bottomley * @port: SAS PORT to free 102565c92b09SJames Bottomley * 102665c92b09SJames Bottomley * Frees the specified SAS PORT. 102765c92b09SJames Bottomley * 102865c92b09SJames Bottomley * Note: 102965c92b09SJames Bottomley * This function must only be called on a PORT that has not 1030af901ca1SAndré Goddard Rosa * successfully been added using sas_port_add(). 103165c92b09SJames Bottomley */ 103265c92b09SJames Bottomley void sas_port_free(struct sas_port *port) 103365c92b09SJames Bottomley { 103465c92b09SJames Bottomley transport_destroy_device(&port->dev); 103565c92b09SJames Bottomley put_device(&port->dev); 103665c92b09SJames Bottomley } 103765c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_free); 103865c92b09SJames Bottomley 103965c92b09SJames Bottomley /** 1040eb44820cSRob Landley * sas_port_delete - remove SAS PORT 104165c92b09SJames Bottomley * @port: SAS PORT to remove 104265c92b09SJames Bottomley * 104365c92b09SJames Bottomley * Removes the specified SAS PORT. If the SAS PORT has an 104465c92b09SJames Bottomley * associated phys, unlink them from the port as well. 104565c92b09SJames Bottomley */ 104665c92b09SJames Bottomley void sas_port_delete(struct sas_port *port) 104765c92b09SJames Bottomley { 104865c92b09SJames Bottomley struct device *dev = &port->dev; 104965c92b09SJames Bottomley struct sas_phy *phy, *tmp_phy; 105065c92b09SJames Bottomley 105165c92b09SJames Bottomley if (port->rphy) { 105265c92b09SJames Bottomley sas_rphy_delete(port->rphy); 105365c92b09SJames Bottomley port->rphy = NULL; 105465c92b09SJames Bottomley } 105565c92b09SJames Bottomley 105665c92b09SJames Bottomley mutex_lock(&port->phy_list_mutex); 105765c92b09SJames Bottomley list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, 105865c92b09SJames Bottomley port_siblings) { 105965c92b09SJames Bottomley sas_port_delete_link(port, phy); 106065c92b09SJames Bottomley list_del_init(&phy->port_siblings); 106165c92b09SJames Bottomley } 106265c92b09SJames Bottomley mutex_unlock(&port->phy_list_mutex); 106365c92b09SJames Bottomley 1064a0e1b6efSJames Bottomley if (port->is_backlink) { 1065a0e1b6efSJames Bottomley struct device *parent = port->dev.parent; 1066a0e1b6efSJames Bottomley 106771610f55SKay Sievers sysfs_remove_link(&port->dev.kobj, dev_name(parent)); 1068a0e1b6efSJames Bottomley port->is_backlink = 0; 1069a0e1b6efSJames Bottomley } 1070a0e1b6efSJames Bottomley 107165c92b09SJames Bottomley transport_remove_device(dev); 107265c92b09SJames Bottomley device_del(dev); 107365c92b09SJames Bottomley transport_destroy_device(dev); 107465c92b09SJames Bottomley put_device(dev); 107565c92b09SJames Bottomley } 107665c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_delete); 107765c92b09SJames Bottomley 107865c92b09SJames Bottomley /** 1079eb44820cSRob Landley * scsi_is_sas_port - check if a struct device represents a SAS port 108065c92b09SJames Bottomley * @dev: device to check 108165c92b09SJames Bottomley * 108265c92b09SJames Bottomley * Returns: 108365c92b09SJames Bottomley * %1 if the device represents a SAS Port, %0 else 108465c92b09SJames Bottomley */ 108565c92b09SJames Bottomley int scsi_is_sas_port(const struct device *dev) 108665c92b09SJames Bottomley { 108765c92b09SJames Bottomley return dev->release == sas_port_release; 108865c92b09SJames Bottomley } 108965c92b09SJames Bottomley EXPORT_SYMBOL(scsi_is_sas_port); 109065c92b09SJames Bottomley 109165c92b09SJames Bottomley /** 1092f41a0c44SDan Williams * sas_port_get_phy - try to take a reference on a port member 1093f41a0c44SDan Williams * @port: port to check 1094f41a0c44SDan Williams */ 1095f41a0c44SDan Williams struct sas_phy *sas_port_get_phy(struct sas_port *port) 1096f41a0c44SDan Williams { 1097f41a0c44SDan Williams struct sas_phy *phy; 1098f41a0c44SDan Williams 1099f41a0c44SDan Williams mutex_lock(&port->phy_list_mutex); 1100f41a0c44SDan Williams if (list_empty(&port->phy_list)) 1101f41a0c44SDan Williams phy = NULL; 1102f41a0c44SDan Williams else { 1103f41a0c44SDan Williams struct list_head *ent = port->phy_list.next; 1104f41a0c44SDan Williams 1105f41a0c44SDan Williams phy = list_entry(ent, typeof(*phy), port_siblings); 1106f41a0c44SDan Williams get_device(&phy->dev); 1107f41a0c44SDan Williams } 1108f41a0c44SDan Williams mutex_unlock(&port->phy_list_mutex); 1109f41a0c44SDan Williams 1110f41a0c44SDan Williams return phy; 1111f41a0c44SDan Williams } 1112f41a0c44SDan Williams EXPORT_SYMBOL(sas_port_get_phy); 1113f41a0c44SDan Williams 1114f41a0c44SDan Williams /** 111565c92b09SJames Bottomley * sas_port_add_phy - add another phy to a port to form a wide port 111665c92b09SJames Bottomley * @port: port to add the phy to 111765c92b09SJames Bottomley * @phy: phy to add 111865c92b09SJames Bottomley * 111965c92b09SJames Bottomley * When a port is initially created, it is empty (has no phys). All 112065c92b09SJames Bottomley * ports must have at least one phy to operated, and all wide ports 112165c92b09SJames Bottomley * must have at least two. The current code makes no difference 112265c92b09SJames Bottomley * between ports and wide ports, but the only object that can be 112365c92b09SJames Bottomley * connected to a remote device is a port, so ports must be formed on 112465c92b09SJames Bottomley * all devices with phys if they're connected to anything. 112565c92b09SJames Bottomley */ 112665c92b09SJames Bottomley void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) 112765c92b09SJames Bottomley { 112865c92b09SJames Bottomley mutex_lock(&port->phy_list_mutex); 112965c92b09SJames Bottomley if (unlikely(!list_empty(&phy->port_siblings))) { 113065c92b09SJames Bottomley /* make sure we're already on this port */ 113165c92b09SJames Bottomley struct sas_phy *tmp; 113265c92b09SJames Bottomley 113365c92b09SJames Bottomley list_for_each_entry(tmp, &port->phy_list, port_siblings) 113465c92b09SJames Bottomley if (tmp == phy) 113565c92b09SJames Bottomley break; 113665c92b09SJames Bottomley /* If this trips, you added a phy that was already 113765c92b09SJames Bottomley * part of a different port */ 113865c92b09SJames Bottomley if (unlikely(tmp != phy)) { 113971610f55SKay Sievers dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", 114071610f55SKay Sievers dev_name(&phy->dev)); 114165c92b09SJames Bottomley BUG(); 114265c92b09SJames Bottomley } 114365c92b09SJames Bottomley } else { 114465c92b09SJames Bottomley sas_port_create_link(port, phy); 114565c92b09SJames Bottomley list_add_tail(&phy->port_siblings, &port->phy_list); 114665c92b09SJames Bottomley port->num_phys++; 114765c92b09SJames Bottomley } 114865c92b09SJames Bottomley mutex_unlock(&port->phy_list_mutex); 114965c92b09SJames Bottomley } 115065c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_add_phy); 115165c92b09SJames Bottomley 115265c92b09SJames Bottomley /** 115365c92b09SJames Bottomley * sas_port_delete_phy - remove a phy from a port or wide port 115465c92b09SJames Bottomley * @port: port to remove the phy from 115565c92b09SJames Bottomley * @phy: phy to remove 115665c92b09SJames Bottomley * 115765c92b09SJames Bottomley * This operation is used for tearing down ports again. It must be 115865c92b09SJames Bottomley * done to every port or wide port before calling sas_port_delete. 115965c92b09SJames Bottomley */ 116065c92b09SJames Bottomley void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) 116165c92b09SJames Bottomley { 116265c92b09SJames Bottomley mutex_lock(&port->phy_list_mutex); 116365c92b09SJames Bottomley sas_port_delete_link(port, phy); 116465c92b09SJames Bottomley list_del_init(&phy->port_siblings); 116565c92b09SJames Bottomley port->num_phys--; 116665c92b09SJames Bottomley mutex_unlock(&port->phy_list_mutex); 116765c92b09SJames Bottomley } 116865c92b09SJames Bottomley EXPORT_SYMBOL(sas_port_delete_phy); 116965c92b09SJames Bottomley 1170a0e1b6efSJames Bottomley void sas_port_mark_backlink(struct sas_port *port) 1171a0e1b6efSJames Bottomley { 117221434966SDarrick J. Wong int res; 1173a0e1b6efSJames Bottomley struct device *parent = port->dev.parent->parent->parent; 1174a0e1b6efSJames Bottomley 1175a0e1b6efSJames Bottomley if (port->is_backlink) 1176a0e1b6efSJames Bottomley return; 1177a0e1b6efSJames Bottomley port->is_backlink = 1; 117821434966SDarrick J. Wong res = sysfs_create_link(&port->dev.kobj, &parent->kobj, 117971610f55SKay Sievers dev_name(parent)); 118021434966SDarrick J. Wong if (res) 118121434966SDarrick J. Wong goto err; 118221434966SDarrick J. Wong return; 118321434966SDarrick J. Wong err: 118421434966SDarrick J. Wong printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", 1185cadbd4a5SHarvey Harrison __func__, res); 1186a0e1b6efSJames Bottomley 1187a0e1b6efSJames Bottomley } 1188a0e1b6efSJames Bottomley EXPORT_SYMBOL(sas_port_mark_backlink); 1189a0e1b6efSJames Bottomley 119065c92b09SJames Bottomley /* 1191c7ebbbceSChristoph Hellwig * SAS remote PHY attributes. 1192c7ebbbceSChristoph Hellwig */ 1193c7ebbbceSChristoph Hellwig 1194c7ebbbceSChristoph Hellwig #define sas_rphy_show_simple(field, name, format_string, cast) \ 1195c7ebbbceSChristoph Hellwig static ssize_t \ 1196ee959b00STony Jones show_sas_rphy_##name(struct device *dev, \ 1197ee959b00STony Jones struct device_attribute *attr, char *buf) \ 1198c7ebbbceSChristoph Hellwig { \ 1199ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); \ 1200c7ebbbceSChristoph Hellwig \ 1201c7ebbbceSChristoph Hellwig return snprintf(buf, 20, format_string, cast rphy->field); \ 1202c7ebbbceSChristoph Hellwig } 1203c7ebbbceSChristoph Hellwig 1204c7ebbbceSChristoph Hellwig #define sas_rphy_simple_attr(field, name, format_string, type) \ 1205c7ebbbceSChristoph Hellwig sas_rphy_show_simple(field, name, format_string, (type)) \ 1206ee959b00STony Jones static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ 1207c7ebbbceSChristoph Hellwig show_sas_rphy_##name, NULL) 1208c7ebbbceSChristoph Hellwig 1209c7ebbbceSChristoph Hellwig #define sas_rphy_show_protocol(field, name) \ 1210c7ebbbceSChristoph Hellwig static ssize_t \ 1211ee959b00STony Jones show_sas_rphy_##name(struct device *dev, \ 1212ee959b00STony Jones struct device_attribute *attr, char *buf) \ 1213c7ebbbceSChristoph Hellwig { \ 1214ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); \ 1215c7ebbbceSChristoph Hellwig \ 1216c7ebbbceSChristoph Hellwig if (!rphy->field) \ 1217c7ebbbceSChristoph Hellwig return snprintf(buf, 20, "none\n"); \ 1218c7ebbbceSChristoph Hellwig return get_sas_protocol_names(rphy->field, buf); \ 1219c7ebbbceSChristoph Hellwig } 1220c7ebbbceSChristoph Hellwig 1221c7ebbbceSChristoph Hellwig #define sas_rphy_protocol_attr(field, name) \ 1222c7ebbbceSChristoph Hellwig sas_rphy_show_protocol(field, name) \ 1223ee959b00STony Jones static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ 1224c7ebbbceSChristoph Hellwig show_sas_rphy_##name, NULL) 1225c7ebbbceSChristoph Hellwig 1226c7ebbbceSChristoph Hellwig static ssize_t 1227ee959b00STony Jones show_sas_rphy_device_type(struct device *dev, 1228ee959b00STony Jones struct device_attribute *attr, char *buf) 1229c7ebbbceSChristoph Hellwig { 1230ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); 1231c7ebbbceSChristoph Hellwig 1232c7ebbbceSChristoph Hellwig if (!rphy->identify.device_type) 1233c7ebbbceSChristoph Hellwig return snprintf(buf, 20, "none\n"); 1234c7ebbbceSChristoph Hellwig return get_sas_device_type_names( 1235c7ebbbceSChristoph Hellwig rphy->identify.device_type, buf); 1236c7ebbbceSChristoph Hellwig } 1237c7ebbbceSChristoph Hellwig 1238ee959b00STony Jones static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO, 1239c7ebbbceSChristoph Hellwig show_sas_rphy_device_type, NULL); 1240c7ebbbceSChristoph Hellwig 1241a0125641SChristoph Hellwig static ssize_t 1242ee959b00STony Jones show_sas_rphy_enclosure_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 u64 identifier; 1250a0125641SChristoph Hellwig int error; 1251a0125641SChristoph Hellwig 1252a0125641SChristoph Hellwig error = i->f->get_enclosure_identifier(rphy, &identifier); 1253a0125641SChristoph Hellwig if (error) 1254a0125641SChristoph Hellwig return error; 1255a0125641SChristoph Hellwig return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); 1256a0125641SChristoph Hellwig } 1257a0125641SChristoph Hellwig 1258ee959b00STony Jones static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, 1259a0125641SChristoph Hellwig show_sas_rphy_enclosure_identifier, NULL); 1260a0125641SChristoph Hellwig 1261a0125641SChristoph Hellwig static ssize_t 1262ee959b00STony Jones show_sas_rphy_bay_identifier(struct device *dev, 1263ee959b00STony Jones struct device_attribute *attr, char *buf) 1264a0125641SChristoph Hellwig { 1265ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); 1266a0125641SChristoph Hellwig struct sas_phy *phy = dev_to_phy(rphy->dev.parent); 1267a0125641SChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 1268a0125641SChristoph Hellwig struct sas_internal *i = to_sas_internal(shost->transportt); 1269a0125641SChristoph Hellwig int val; 1270a0125641SChristoph Hellwig 1271a0125641SChristoph Hellwig val = i->f->get_bay_identifier(rphy); 1272a0125641SChristoph Hellwig if (val < 0) 1273a0125641SChristoph Hellwig return val; 1274a0125641SChristoph Hellwig return sprintf(buf, "%d\n", val); 1275a0125641SChristoph Hellwig } 1276a0125641SChristoph Hellwig 1277ee959b00STony Jones static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, 1278a0125641SChristoph Hellwig show_sas_rphy_bay_identifier, NULL); 1279a0125641SChristoph Hellwig 1280c7ebbbceSChristoph Hellwig sas_rphy_protocol_attr(identify.initiator_port_protocols, 1281c7ebbbceSChristoph Hellwig initiator_port_protocols); 1282c7ebbbceSChristoph Hellwig sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); 1283c7ebbbceSChristoph Hellwig sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", 1284c7ebbbceSChristoph Hellwig unsigned long long); 1285c7ebbbceSChristoph Hellwig sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); 1286cdc43ae3SHannes Reinecke sas_rphy_simple_attr(scsi_target_id, scsi_target_id, "%d\n", u32); 1287c7ebbbceSChristoph Hellwig 128842ab0360SJames Bottomley /* only need 8 bytes of data plus header (4 or 8) */ 128942ab0360SJames Bottomley #define BUF_SIZE 64 129042ab0360SJames Bottomley 129142ab0360SJames Bottomley int sas_read_port_mode_page(struct scsi_device *sdev) 129242ab0360SJames Bottomley { 129342ab0360SJames Bottomley char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; 12940f88009dSJames Bottomley struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); 129542ab0360SJames Bottomley struct scsi_mode_data mode_data; 129642ab0360SJames Bottomley int res, error; 129742ab0360SJames Bottomley 129842ab0360SJames Bottomley if (!buffer) 129942ab0360SJames Bottomley return -ENOMEM; 130042ab0360SJames Bottomley 130142ab0360SJames Bottomley res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, 130242ab0360SJames Bottomley &mode_data, NULL); 130342ab0360SJames Bottomley 130442ab0360SJames Bottomley error = -EINVAL; 130542ab0360SJames Bottomley if (!scsi_status_is_good(res)) 130642ab0360SJames Bottomley goto out; 130742ab0360SJames Bottomley 130842ab0360SJames Bottomley msdata = buffer + mode_data.header_length + 130942ab0360SJames Bottomley mode_data.block_descriptor_length; 131042ab0360SJames Bottomley 131142ab0360SJames Bottomley if (msdata - buffer > BUF_SIZE - 8) 131242ab0360SJames Bottomley goto out; 131342ab0360SJames Bottomley 131442ab0360SJames Bottomley error = 0; 131542ab0360SJames Bottomley 131642ab0360SJames Bottomley rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; 131742ab0360SJames Bottomley rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; 131842ab0360SJames Bottomley rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; 131942ab0360SJames Bottomley 132042ab0360SJames Bottomley out: 132142ab0360SJames Bottomley kfree(buffer); 132242ab0360SJames Bottomley return error; 132342ab0360SJames Bottomley } 132442ab0360SJames Bottomley EXPORT_SYMBOL(sas_read_port_mode_page); 132542ab0360SJames Bottomley 132679cb1819SJames Bottomley static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, 132779cb1819SJames Bottomley "sas_end_device", NULL, NULL, NULL); 132879cb1819SJames Bottomley 132942ab0360SJames Bottomley #define sas_end_dev_show_simple(field, name, format_string, cast) \ 133042ab0360SJames Bottomley static ssize_t \ 1331ee959b00STony Jones show_sas_end_dev_##name(struct device *dev, \ 1332ee959b00STony Jones struct device_attribute *attr, char *buf) \ 133342ab0360SJames Bottomley { \ 1334ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); \ 133542ab0360SJames Bottomley struct sas_end_device *rdev = rphy_to_end_device(rphy); \ 133642ab0360SJames Bottomley \ 133742ab0360SJames Bottomley return snprintf(buf, 20, format_string, cast rdev->field); \ 133842ab0360SJames Bottomley } 133942ab0360SJames Bottomley 134042ab0360SJames Bottomley #define sas_end_dev_simple_attr(field, name, format_string, type) \ 134142ab0360SJames Bottomley sas_end_dev_show_simple(field, name, format_string, (type)) \ 1342ee959b00STony Jones static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ 134342ab0360SJames Bottomley show_sas_end_dev_##name, NULL) 134442ab0360SJames Bottomley 134542ab0360SJames Bottomley sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); 134642ab0360SJames Bottomley sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, 134742ab0360SJames Bottomley "%d\n", int); 134842ab0360SJames Bottomley sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, 134942ab0360SJames Bottomley "%d\n", int); 13500f88009dSJames Bottomley sas_end_dev_simple_attr(tlr_supported, tlr_supported, 13510f88009dSJames Bottomley "%d\n", int); 13520f88009dSJames Bottomley sas_end_dev_simple_attr(tlr_enabled, tlr_enabled, 13530f88009dSJames Bottomley "%d\n", int); 135442ab0360SJames Bottomley 135579cb1819SJames Bottomley static DECLARE_TRANSPORT_CLASS(sas_expander_class, 135679cb1819SJames Bottomley "sas_expander", NULL, NULL, NULL); 135779cb1819SJames Bottomley 135879cb1819SJames Bottomley #define sas_expander_show_simple(field, name, format_string, cast) \ 135979cb1819SJames Bottomley static ssize_t \ 1360ee959b00STony Jones show_sas_expander_##name(struct device *dev, \ 1361ee959b00STony Jones struct device_attribute *attr, char *buf) \ 136279cb1819SJames Bottomley { \ 1363ee959b00STony Jones struct sas_rphy *rphy = transport_class_to_rphy(dev); \ 136479cb1819SJames Bottomley struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ 136579cb1819SJames Bottomley \ 136679cb1819SJames Bottomley return snprintf(buf, 20, format_string, cast edev->field); \ 136779cb1819SJames Bottomley } 136879cb1819SJames Bottomley 136979cb1819SJames Bottomley #define sas_expander_simple_attr(field, name, format_string, type) \ 137079cb1819SJames Bottomley sas_expander_show_simple(field, name, format_string, (type)) \ 1371ee959b00STony Jones static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \ 137279cb1819SJames Bottomley show_sas_expander_##name, NULL) 137379cb1819SJames Bottomley 137479cb1819SJames Bottomley sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); 137579cb1819SJames Bottomley sas_expander_simple_attr(product_id, product_id, "%s\n", char *); 137679cb1819SJames Bottomley sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); 137779cb1819SJames Bottomley sas_expander_simple_attr(component_vendor_id, component_vendor_id, 137879cb1819SJames Bottomley "%s\n", char *); 137979cb1819SJames Bottomley sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); 138079cb1819SJames Bottomley sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", 138179cb1819SJames Bottomley unsigned int); 138279cb1819SJames Bottomley sas_expander_simple_attr(level, level, "%d\n", int); 138342ab0360SJames Bottomley 1384c7ebbbceSChristoph Hellwig static DECLARE_TRANSPORT_CLASS(sas_rphy_class, 13852f8600dfSJames Bottomley "sas_device", NULL, NULL, NULL); 1386c7ebbbceSChristoph Hellwig 1387c7ebbbceSChristoph Hellwig static int sas_rphy_match(struct attribute_container *cont, struct device *dev) 1388c7ebbbceSChristoph Hellwig { 1389c7ebbbceSChristoph Hellwig struct Scsi_Host *shost; 1390c7ebbbceSChristoph Hellwig struct sas_internal *i; 1391c7ebbbceSChristoph Hellwig 1392c7ebbbceSChristoph Hellwig if (!scsi_is_sas_rphy(dev)) 1393c7ebbbceSChristoph Hellwig return 0; 1394c7ebbbceSChristoph Hellwig shost = dev_to_shost(dev->parent->parent); 1395c7ebbbceSChristoph Hellwig 1396c7ebbbceSChristoph Hellwig if (!shost->transportt) 1397c7ebbbceSChristoph Hellwig return 0; 1398c7ebbbceSChristoph Hellwig if (shost->transportt->host_attrs.ac.class != 1399c7ebbbceSChristoph Hellwig &sas_host_class.class) 1400c7ebbbceSChristoph Hellwig return 0; 1401c7ebbbceSChristoph Hellwig 1402c7ebbbceSChristoph Hellwig i = to_sas_internal(shost->transportt); 1403c7ebbbceSChristoph Hellwig return &i->rphy_attr_cont.ac == cont; 1404c7ebbbceSChristoph Hellwig } 1405c7ebbbceSChristoph Hellwig 140642ab0360SJames Bottomley static int sas_end_dev_match(struct attribute_container *cont, 140742ab0360SJames Bottomley struct device *dev) 140842ab0360SJames Bottomley { 140942ab0360SJames Bottomley struct Scsi_Host *shost; 141042ab0360SJames Bottomley struct sas_internal *i; 141142ab0360SJames Bottomley struct sas_rphy *rphy; 141242ab0360SJames Bottomley 141342ab0360SJames Bottomley if (!scsi_is_sas_rphy(dev)) 141442ab0360SJames Bottomley return 0; 141542ab0360SJames Bottomley shost = dev_to_shost(dev->parent->parent); 141642ab0360SJames Bottomley rphy = dev_to_rphy(dev); 141742ab0360SJames Bottomley 141842ab0360SJames Bottomley if (!shost->transportt) 141942ab0360SJames Bottomley return 0; 142042ab0360SJames Bottomley if (shost->transportt->host_attrs.ac.class != 142142ab0360SJames Bottomley &sas_host_class.class) 142242ab0360SJames Bottomley return 0; 142342ab0360SJames Bottomley 142442ab0360SJames Bottomley i = to_sas_internal(shost->transportt); 142542ab0360SJames Bottomley return &i->end_dev_attr_cont.ac == cont && 14262f8600dfSJames Bottomley rphy->identify.device_type == SAS_END_DEVICE; 142742ab0360SJames Bottomley } 142842ab0360SJames Bottomley 142979cb1819SJames Bottomley static int sas_expander_match(struct attribute_container *cont, 143079cb1819SJames Bottomley struct device *dev) 143179cb1819SJames Bottomley { 143279cb1819SJames Bottomley struct Scsi_Host *shost; 143379cb1819SJames Bottomley struct sas_internal *i; 143479cb1819SJames Bottomley struct sas_rphy *rphy; 143579cb1819SJames Bottomley 143679cb1819SJames Bottomley if (!scsi_is_sas_rphy(dev)) 143779cb1819SJames Bottomley return 0; 143879cb1819SJames Bottomley shost = dev_to_shost(dev->parent->parent); 143979cb1819SJames Bottomley rphy = dev_to_rphy(dev); 144079cb1819SJames Bottomley 144179cb1819SJames Bottomley if (!shost->transportt) 144279cb1819SJames Bottomley return 0; 144379cb1819SJames Bottomley if (shost->transportt->host_attrs.ac.class != 144479cb1819SJames Bottomley &sas_host_class.class) 144579cb1819SJames Bottomley return 0; 144679cb1819SJames Bottomley 144779cb1819SJames Bottomley i = to_sas_internal(shost->transportt); 144879cb1819SJames Bottomley return &i->expander_attr_cont.ac == cont && 144979cb1819SJames Bottomley (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || 14502f8600dfSJames Bottomley rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); 145179cb1819SJames Bottomley } 145279cb1819SJames Bottomley 14532f8600dfSJames Bottomley static void sas_expander_release(struct device *dev) 1454c7ebbbceSChristoph Hellwig { 1455c7ebbbceSChristoph Hellwig struct sas_rphy *rphy = dev_to_rphy(dev); 14562f8600dfSJames Bottomley struct sas_expander_device *edev = rphy_to_expander_device(rphy); 1457c7ebbbceSChristoph Hellwig 145893c20a59SFUJITA Tomonori if (rphy->q) 145993c20a59SFUJITA Tomonori blk_cleanup_queue(rphy->q); 146093c20a59SFUJITA Tomonori 1461c7ebbbceSChristoph Hellwig put_device(dev->parent); 14622f8600dfSJames Bottomley kfree(edev); 1463c7ebbbceSChristoph Hellwig } 1464c7ebbbceSChristoph Hellwig 14652f8600dfSJames Bottomley static void sas_end_device_release(struct device *dev) 1466c7ebbbceSChristoph Hellwig { 14672f8600dfSJames Bottomley struct sas_rphy *rphy = dev_to_rphy(dev); 14682f8600dfSJames Bottomley struct sas_end_device *edev = rphy_to_end_device(rphy); 1469c7ebbbceSChristoph Hellwig 147093c20a59SFUJITA Tomonori if (rphy->q) 147193c20a59SFUJITA Tomonori blk_cleanup_queue(rphy->q); 147293c20a59SFUJITA Tomonori 14732f8600dfSJames Bottomley put_device(dev->parent); 14742f8600dfSJames Bottomley kfree(edev); 1475c7ebbbceSChristoph Hellwig } 1476c7ebbbceSChristoph Hellwig 1477c7ebbbceSChristoph Hellwig /** 1478c5943d36SJames Bottomley * sas_rphy_initialize - common rphy intialization 1479c5943d36SJames Bottomley * @rphy: rphy to initialise 1480c5943d36SJames Bottomley * 1481c5943d36SJames Bottomley * Used by both sas_end_device_alloc() and sas_expander_alloc() to 1482c5943d36SJames Bottomley * initialise the common rphy component of each. 1483c5943d36SJames Bottomley */ 1484c5943d36SJames Bottomley static void sas_rphy_initialize(struct sas_rphy *rphy) 1485c5943d36SJames Bottomley { 1486c5943d36SJames Bottomley INIT_LIST_HEAD(&rphy->list); 1487c5943d36SJames Bottomley } 1488c5943d36SJames Bottomley 1489c5943d36SJames Bottomley /** 149042ab0360SJames Bottomley * sas_end_device_alloc - allocate an rphy for an end device 1491eb44820cSRob Landley * @parent: which port 149242ab0360SJames Bottomley * 149342ab0360SJames Bottomley * Allocates an SAS remote PHY structure, connected to @parent. 149442ab0360SJames Bottomley * 149542ab0360SJames Bottomley * Returns: 149642ab0360SJames Bottomley * SAS PHY allocated or %NULL if the allocation failed. 149742ab0360SJames Bottomley */ 149865c92b09SJames Bottomley struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) 149942ab0360SJames Bottomley { 150042ab0360SJames Bottomley struct Scsi_Host *shost = dev_to_shost(&parent->dev); 150142ab0360SJames Bottomley struct sas_end_device *rdev; 150242ab0360SJames Bottomley 150342ab0360SJames Bottomley rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); 150442ab0360SJames Bottomley if (!rdev) { 150542ab0360SJames Bottomley return NULL; 150642ab0360SJames Bottomley } 150742ab0360SJames Bottomley 150842ab0360SJames Bottomley device_initialize(&rdev->rphy.dev); 150942ab0360SJames Bottomley rdev->rphy.dev.parent = get_device(&parent->dev); 15102f8600dfSJames Bottomley rdev->rphy.dev.release = sas_end_device_release; 151165c92b09SJames Bottomley if (scsi_is_sas_expander_device(parent->dev.parent)) { 151265c92b09SJames Bottomley struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); 151371610f55SKay Sievers dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d", 151471610f55SKay Sievers shost->host_no, rphy->scsi_target_id, 151571610f55SKay Sievers parent->port_identifier); 151665c92b09SJames Bottomley } else 151771610f55SKay Sievers dev_set_name(&rdev->rphy.dev, "end_device-%d:%d", 151865c92b09SJames Bottomley shost->host_no, parent->port_identifier); 151942ab0360SJames Bottomley rdev->rphy.identify.device_type = SAS_END_DEVICE; 1520c5943d36SJames Bottomley sas_rphy_initialize(&rdev->rphy); 152142ab0360SJames Bottomley transport_setup_device(&rdev->rphy.dev); 152242ab0360SJames Bottomley 152342ab0360SJames Bottomley return &rdev->rphy; 152442ab0360SJames Bottomley } 152542ab0360SJames Bottomley EXPORT_SYMBOL(sas_end_device_alloc); 152642ab0360SJames Bottomley 152779cb1819SJames Bottomley /** 152879cb1819SJames Bottomley * sas_expander_alloc - allocate an rphy for an end device 1529eb44820cSRob Landley * @parent: which port 1530eb44820cSRob Landley * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE 153179cb1819SJames Bottomley * 153279cb1819SJames Bottomley * Allocates an SAS remote PHY structure, connected to @parent. 153379cb1819SJames Bottomley * 153479cb1819SJames Bottomley * Returns: 153579cb1819SJames Bottomley * SAS PHY allocated or %NULL if the allocation failed. 153679cb1819SJames Bottomley */ 153765c92b09SJames Bottomley struct sas_rphy *sas_expander_alloc(struct sas_port *parent, 153879cb1819SJames Bottomley enum sas_device_type type) 153979cb1819SJames Bottomley { 154079cb1819SJames Bottomley struct Scsi_Host *shost = dev_to_shost(&parent->dev); 154179cb1819SJames Bottomley struct sas_expander_device *rdev; 154279cb1819SJames Bottomley struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 154379cb1819SJames Bottomley 154479cb1819SJames Bottomley BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && 154579cb1819SJames Bottomley type != SAS_FANOUT_EXPANDER_DEVICE); 154679cb1819SJames Bottomley 154779cb1819SJames Bottomley rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); 154879cb1819SJames Bottomley if (!rdev) { 154979cb1819SJames Bottomley return NULL; 155079cb1819SJames Bottomley } 155179cb1819SJames Bottomley 155279cb1819SJames Bottomley device_initialize(&rdev->rphy.dev); 155379cb1819SJames Bottomley rdev->rphy.dev.parent = get_device(&parent->dev); 15542f8600dfSJames Bottomley rdev->rphy.dev.release = sas_expander_release; 155579cb1819SJames Bottomley mutex_lock(&sas_host->lock); 155679cb1819SJames Bottomley rdev->rphy.scsi_target_id = sas_host->next_expander_id++; 155779cb1819SJames Bottomley mutex_unlock(&sas_host->lock); 155871610f55SKay Sievers dev_set_name(&rdev->rphy.dev, "expander-%d:%d", 155979cb1819SJames Bottomley shost->host_no, rdev->rphy.scsi_target_id); 156079cb1819SJames Bottomley rdev->rphy.identify.device_type = type; 1561c5943d36SJames Bottomley sas_rphy_initialize(&rdev->rphy); 156279cb1819SJames Bottomley transport_setup_device(&rdev->rphy.dev); 156379cb1819SJames Bottomley 156479cb1819SJames Bottomley return &rdev->rphy; 156579cb1819SJames Bottomley } 156679cb1819SJames Bottomley EXPORT_SYMBOL(sas_expander_alloc); 156742ab0360SJames Bottomley 156842ab0360SJames Bottomley /** 1569eb44820cSRob Landley * sas_rphy_add - add a SAS remote PHY to the device hierarchy 1570c7ebbbceSChristoph Hellwig * @rphy: The remote PHY to be added 1571c7ebbbceSChristoph Hellwig * 1572c7ebbbceSChristoph Hellwig * Publishes a SAS remote PHY to the rest of the system. 1573c7ebbbceSChristoph Hellwig */ 1574c7ebbbceSChristoph Hellwig int sas_rphy_add(struct sas_rphy *rphy) 1575c7ebbbceSChristoph Hellwig { 157665c92b09SJames Bottomley struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); 1577c7ebbbceSChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); 1578c7ebbbceSChristoph Hellwig struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 1579c7ebbbceSChristoph Hellwig struct sas_identify *identify = &rphy->identify; 1580c7ebbbceSChristoph Hellwig int error; 1581c7ebbbceSChristoph Hellwig 1582c7ebbbceSChristoph Hellwig if (parent->rphy) 1583c7ebbbceSChristoph Hellwig return -ENXIO; 1584c7ebbbceSChristoph Hellwig parent->rphy = rphy; 1585c7ebbbceSChristoph Hellwig 1586c7ebbbceSChristoph Hellwig error = device_add(&rphy->dev); 1587c7ebbbceSChristoph Hellwig if (error) 1588c7ebbbceSChristoph Hellwig return error; 1589c7ebbbceSChristoph Hellwig transport_add_device(&rphy->dev); 1590c7ebbbceSChristoph Hellwig transport_configure_device(&rphy->dev); 159139dca558SJames Bottomley if (sas_bsg_initialize(shost, rphy)) 159271610f55SKay Sievers printk("fail to a bsg device %s\n", dev_name(&rphy->dev)); 159339dca558SJames Bottomley 1594c7ebbbceSChristoph Hellwig 1595e02f3f59SChristoph Hellwig mutex_lock(&sas_host->lock); 1596c7ebbbceSChristoph Hellwig list_add_tail(&rphy->list, &sas_host->rphy_list); 1597c7ebbbceSChristoph Hellwig if (identify->device_type == SAS_END_DEVICE && 1598c7ebbbceSChristoph Hellwig (identify->target_port_protocols & 1599c7ebbbceSChristoph Hellwig (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) 1600c7ebbbceSChristoph Hellwig rphy->scsi_target_id = sas_host->next_target_id++; 16017676f83aSJames Bottomley else if (identify->device_type == SAS_END_DEVICE) 16027676f83aSJames Bottomley rphy->scsi_target_id = -1; 1603e02f3f59SChristoph Hellwig mutex_unlock(&sas_host->lock); 1604c7ebbbceSChristoph Hellwig 160579cb1819SJames Bottomley if (identify->device_type == SAS_END_DEVICE && 160679cb1819SJames Bottomley rphy->scsi_target_id != -1) { 16072fc62e2aSDan Williams int lun; 16082fc62e2aSDan Williams 16092fc62e2aSDan Williams if (identify->target_port_protocols & SAS_PROTOCOL_SSP) 16102fc62e2aSDan Williams lun = SCAN_WILD_CARD; 16112fc62e2aSDan Williams else 16122fc62e2aSDan Williams lun = 0; 16132fc62e2aSDan Williams 16141d645088SHannes Reinecke scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, lun, 16151d645088SHannes Reinecke SCSI_SCAN_INITIAL); 1616c7ebbbceSChristoph Hellwig } 1617c7ebbbceSChristoph Hellwig 1618c7ebbbceSChristoph Hellwig return 0; 1619c7ebbbceSChristoph Hellwig } 1620c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_rphy_add); 1621c7ebbbceSChristoph Hellwig 1622c7ebbbceSChristoph Hellwig /** 1623eb44820cSRob Landley * sas_rphy_free - free a SAS remote PHY 1624eb44820cSRob Landley * @rphy: SAS remote PHY to free 1625c7ebbbceSChristoph Hellwig * 1626c7ebbbceSChristoph Hellwig * Frees the specified SAS remote PHY. 1627c7ebbbceSChristoph Hellwig * 1628c7ebbbceSChristoph Hellwig * Note: 1629c7ebbbceSChristoph Hellwig * This function must only be called on a remote 1630af901ca1SAndré Goddard Rosa * PHY that has not successfully been added using 16316f63caaeSDarrick J. Wong * sas_rphy_add() (or has been sas_rphy_remove()'d) 1632c7ebbbceSChristoph Hellwig */ 1633c7ebbbceSChristoph Hellwig void sas_rphy_free(struct sas_rphy *rphy) 1634c7ebbbceSChristoph Hellwig { 163592aab646SMike Anderson struct device *dev = &rphy->dev; 1636c7ebbbceSChristoph Hellwig struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); 1637c7ebbbceSChristoph Hellwig struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 1638c7ebbbceSChristoph Hellwig 1639e02f3f59SChristoph Hellwig mutex_lock(&sas_host->lock); 1640c7ebbbceSChristoph Hellwig list_del(&rphy->list); 1641e02f3f59SChristoph Hellwig mutex_unlock(&sas_host->lock); 1642c7ebbbceSChristoph Hellwig 164392aab646SMike Anderson transport_destroy_device(dev); 16442f8600dfSJames Bottomley 164592aab646SMike Anderson put_device(dev); 1646c7ebbbceSChristoph Hellwig } 1647c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_rphy_free); 1648c7ebbbceSChristoph Hellwig 1649c7ebbbceSChristoph Hellwig /** 1650eb44820cSRob Landley * sas_rphy_delete - remove and free SAS remote PHY 16516f63caaeSDarrick J. Wong * @rphy: SAS remote PHY to remove and free 1652c7ebbbceSChristoph Hellwig * 16536f63caaeSDarrick J. Wong * Removes the specified SAS remote PHY and frees it. 1654c7ebbbceSChristoph Hellwig */ 1655c7ebbbceSChristoph Hellwig void 1656c7ebbbceSChristoph Hellwig sas_rphy_delete(struct sas_rphy *rphy) 1657c7ebbbceSChristoph Hellwig { 16586f63caaeSDarrick J. Wong sas_rphy_remove(rphy); 16596f63caaeSDarrick J. Wong sas_rphy_free(rphy); 16606f63caaeSDarrick J. Wong } 16616f63caaeSDarrick J. Wong EXPORT_SYMBOL(sas_rphy_delete); 16626f63caaeSDarrick J. Wong 16636f63caaeSDarrick J. Wong /** 166487c8331fSDan Williams * sas_rphy_unlink - unlink SAS remote PHY 166587c8331fSDan Williams * @rphy: SAS remote phy to unlink from its parent port 166687c8331fSDan Williams * 166787c8331fSDan Williams * Removes port reference to an rphy 166887c8331fSDan Williams */ 166987c8331fSDan Williams void sas_rphy_unlink(struct sas_rphy *rphy) 167087c8331fSDan Williams { 167187c8331fSDan Williams struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); 167287c8331fSDan Williams 167387c8331fSDan Williams parent->rphy = NULL; 167487c8331fSDan Williams } 167587c8331fSDan Williams EXPORT_SYMBOL(sas_rphy_unlink); 167687c8331fSDan Williams 167787c8331fSDan Williams /** 1678eb44820cSRob Landley * sas_rphy_remove - remove SAS remote PHY 16796f63caaeSDarrick J. Wong * @rphy: SAS remote phy to remove 16806f63caaeSDarrick J. Wong * 16816f63caaeSDarrick J. Wong * Removes the specified SAS remote PHY. 16826f63caaeSDarrick J. Wong */ 16836f63caaeSDarrick J. Wong void 16846f63caaeSDarrick J. Wong sas_rphy_remove(struct sas_rphy *rphy) 16856f63caaeSDarrick J. Wong { 1686c7ebbbceSChristoph Hellwig struct device *dev = &rphy->dev; 1687c7ebbbceSChristoph Hellwig 1688d4054239SChristoph Hellwig switch (rphy->identify.device_type) { 1689d4054239SChristoph Hellwig case SAS_END_DEVICE: 1690fe8b2304SChristoph Hellwig scsi_remove_target(dev); 1691d4054239SChristoph Hellwig break; 1692d4054239SChristoph Hellwig case SAS_EDGE_EXPANDER_DEVICE: 1693d4054239SChristoph Hellwig case SAS_FANOUT_EXPANDER_DEVICE: 169465c92b09SJames Bottomley sas_remove_children(dev); 1695d4054239SChristoph Hellwig break; 1696d4054239SChristoph Hellwig default: 1697d4054239SChristoph Hellwig break; 1698d4054239SChristoph Hellwig } 1699c7ebbbceSChristoph Hellwig 170087c8331fSDan Williams sas_rphy_unlink(rphy); 17016aa6caffSJoe Lawrence sas_bsg_remove(NULL, rphy); 1702fe8b2304SChristoph Hellwig transport_remove_device(dev); 1703fe8b2304SChristoph Hellwig device_del(dev); 1704c7ebbbceSChristoph Hellwig } 17056f63caaeSDarrick J. Wong EXPORT_SYMBOL(sas_rphy_remove); 1706c7ebbbceSChristoph Hellwig 1707c7ebbbceSChristoph Hellwig /** 1708eb44820cSRob Landley * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY 1709c7ebbbceSChristoph Hellwig * @dev: device to check 1710c7ebbbceSChristoph Hellwig * 1711c7ebbbceSChristoph Hellwig * Returns: 1712c7ebbbceSChristoph Hellwig * %1 if the device represents a SAS remote PHY, %0 else 1713c7ebbbceSChristoph Hellwig */ 1714c7ebbbceSChristoph Hellwig int scsi_is_sas_rphy(const struct device *dev) 1715c7ebbbceSChristoph Hellwig { 17162f8600dfSJames Bottomley return dev->release == sas_end_device_release || 17172f8600dfSJames Bottomley dev->release == sas_expander_release; 1718c7ebbbceSChristoph Hellwig } 1719c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(scsi_is_sas_rphy); 1720c7ebbbceSChristoph Hellwig 1721c7ebbbceSChristoph Hellwig 1722c7ebbbceSChristoph Hellwig /* 1723c7ebbbceSChristoph Hellwig * SCSI scan helper 1724c7ebbbceSChristoph Hellwig */ 1725c7ebbbceSChristoph Hellwig 1726e02f3f59SChristoph Hellwig static int sas_user_scan(struct Scsi_Host *shost, uint channel, 17279cb78c16SHannes Reinecke uint id, u64 lun) 1728c7ebbbceSChristoph Hellwig { 1729c7ebbbceSChristoph Hellwig struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); 1730c7ebbbceSChristoph Hellwig struct sas_rphy *rphy; 1731c7ebbbceSChristoph Hellwig 1732e02f3f59SChristoph Hellwig mutex_lock(&sas_host->lock); 1733c7ebbbceSChristoph Hellwig list_for_each_entry(rphy, &sas_host->rphy_list, list) { 17346d99a3f3SJames Bottomley if (rphy->identify.device_type != SAS_END_DEVICE || 17356d99a3f3SJames Bottomley rphy->scsi_target_id == -1) 1736e02f3f59SChristoph Hellwig continue; 1737e02f3f59SChristoph Hellwig 1738e8bf3941SJames Bottomley if ((channel == SCAN_WILD_CARD || channel == 0) && 1739e02f3f59SChristoph Hellwig (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { 17401d645088SHannes Reinecke scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, 17411d645088SHannes Reinecke lun, SCSI_SCAN_MANUAL); 1742e02f3f59SChristoph Hellwig } 1743e02f3f59SChristoph Hellwig } 1744e02f3f59SChristoph Hellwig mutex_unlock(&sas_host->lock); 1745e02f3f59SChristoph Hellwig 1746e02f3f59SChristoph Hellwig return 0; 1747c7ebbbceSChristoph Hellwig } 1748c7ebbbceSChristoph Hellwig 1749c7ebbbceSChristoph Hellwig 1750c7ebbbceSChristoph Hellwig /* 1751c7ebbbceSChristoph Hellwig * Setup / Teardown code 1752c7ebbbceSChristoph Hellwig */ 1753c7ebbbceSChristoph Hellwig 175442ab0360SJames Bottomley #define SETUP_TEMPLATE(attrb, field, perm, test) \ 1755ee959b00STony Jones i->private_##attrb[count] = dev_attr_##field; \ 175642ab0360SJames Bottomley i->private_##attrb[count].attr.mode = perm; \ 175742ab0360SJames Bottomley i->attrb[count] = &i->private_##attrb[count]; \ 175842ab0360SJames Bottomley if (test) \ 1759c7ebbbceSChristoph Hellwig count++ 1760c7ebbbceSChristoph Hellwig 1761d24e1eebSJames Bottomley #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ 1762ee959b00STony Jones i->private_##attrb[count] = dev_attr_##field; \ 1763d24e1eebSJames Bottomley i->private_##attrb[count].attr.mode = perm; \ 1764d24e1eebSJames Bottomley if (ro_test) { \ 1765d24e1eebSJames Bottomley i->private_##attrb[count].attr.mode = ro_perm; \ 1766d24e1eebSJames Bottomley i->private_##attrb[count].store = NULL; \ 1767d24e1eebSJames Bottomley } \ 1768d24e1eebSJames Bottomley i->attrb[count] = &i->private_##attrb[count]; \ 1769d24e1eebSJames Bottomley if (test) \ 1770d24e1eebSJames Bottomley count++ 177142ab0360SJames Bottomley 177242ab0360SJames Bottomley #define SETUP_RPORT_ATTRIBUTE(field) \ 177342ab0360SJames Bottomley SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) 177442ab0360SJames Bottomley 1775dd9fbb52SJames Bottomley #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ 177642ab0360SJames Bottomley SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) 1777dd9fbb52SJames Bottomley 177865c92b09SJames Bottomley #define SETUP_PHY_ATTRIBUTE(field) \ 177942ab0360SJames Bottomley SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) 1780c7ebbbceSChristoph Hellwig 1781d24e1eebSJames Bottomley #define SETUP_PHY_ATTRIBUTE_RW(field) \ 1782d24e1eebSJames Bottomley SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ 1783d24e1eebSJames Bottomley !i->f->set_phy_speed, S_IRUGO) 1784d24e1eebSJames Bottomley 1785acbf167dSDarrick J. Wong #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ 1786acbf167dSDarrick J. Wong SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ 1787acbf167dSDarrick J. Wong !i->f->func, S_IRUGO) 1788acbf167dSDarrick J. Wong 178965c92b09SJames Bottomley #define SETUP_PORT_ATTRIBUTE(field) \ 179065c92b09SJames Bottomley SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) 179165c92b09SJames Bottomley 179265c92b09SJames Bottomley #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ 179342ab0360SJames Bottomley SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) 1794dd9fbb52SJames Bottomley 179565c92b09SJames Bottomley #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ 1796fe3b5bfeSDarrick J. Wong SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) 179707ba3a95SChristoph Hellwig 179865c92b09SJames Bottomley #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ 1799fe3b5bfeSDarrick J. Wong SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) 1800dd9fbb52SJames Bottomley 180142ab0360SJames Bottomley #define SETUP_END_DEV_ATTRIBUTE(field) \ 180242ab0360SJames Bottomley SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) 1803c7ebbbceSChristoph Hellwig 180479cb1819SJames Bottomley #define SETUP_EXPANDER_ATTRIBUTE(field) \ 180579cb1819SJames Bottomley SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) 180679cb1819SJames Bottomley 1807c7ebbbceSChristoph Hellwig /** 1808eb44820cSRob Landley * sas_attach_transport - instantiate SAS transport template 1809c7ebbbceSChristoph Hellwig * @ft: SAS transport class function template 1810c7ebbbceSChristoph Hellwig */ 1811c7ebbbceSChristoph Hellwig struct scsi_transport_template * 1812c7ebbbceSChristoph Hellwig sas_attach_transport(struct sas_function_template *ft) 1813c7ebbbceSChristoph Hellwig { 1814c7ebbbceSChristoph Hellwig struct sas_internal *i; 1815c7ebbbceSChristoph Hellwig int count; 1816c7ebbbceSChristoph Hellwig 181724669f75SJes Sorensen i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); 1818c7ebbbceSChristoph Hellwig if (!i) 1819c7ebbbceSChristoph Hellwig return NULL; 1820c7ebbbceSChristoph Hellwig 1821e02f3f59SChristoph Hellwig i->t.user_scan = sas_user_scan; 1822c7ebbbceSChristoph Hellwig 1823c7ebbbceSChristoph Hellwig i->t.host_attrs.ac.attrs = &i->host_attrs[0]; 1824c7ebbbceSChristoph Hellwig i->t.host_attrs.ac.class = &sas_host_class.class; 1825c7ebbbceSChristoph Hellwig i->t.host_attrs.ac.match = sas_host_match; 1826c7ebbbceSChristoph Hellwig transport_container_register(&i->t.host_attrs); 1827c7ebbbceSChristoph Hellwig i->t.host_size = sizeof(struct sas_host_attrs); 1828c7ebbbceSChristoph Hellwig 1829c7ebbbceSChristoph Hellwig i->phy_attr_cont.ac.class = &sas_phy_class.class; 1830c7ebbbceSChristoph Hellwig i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; 1831c7ebbbceSChristoph Hellwig i->phy_attr_cont.ac.match = sas_phy_match; 1832c7ebbbceSChristoph Hellwig transport_container_register(&i->phy_attr_cont); 1833c7ebbbceSChristoph Hellwig 183465c92b09SJames Bottomley i->port_attr_cont.ac.class = &sas_port_class.class; 183565c92b09SJames Bottomley i->port_attr_cont.ac.attrs = &i->port_attrs[0]; 183665c92b09SJames Bottomley i->port_attr_cont.ac.match = sas_port_match; 183765c92b09SJames Bottomley transport_container_register(&i->port_attr_cont); 183865c92b09SJames Bottomley 1839c7ebbbceSChristoph Hellwig i->rphy_attr_cont.ac.class = &sas_rphy_class.class; 1840c7ebbbceSChristoph Hellwig i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; 1841c7ebbbceSChristoph Hellwig i->rphy_attr_cont.ac.match = sas_rphy_match; 1842c7ebbbceSChristoph Hellwig transport_container_register(&i->rphy_attr_cont); 1843c7ebbbceSChristoph Hellwig 184442ab0360SJames Bottomley i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; 184542ab0360SJames Bottomley i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; 184642ab0360SJames Bottomley i->end_dev_attr_cont.ac.match = sas_end_dev_match; 184742ab0360SJames Bottomley transport_container_register(&i->end_dev_attr_cont); 184842ab0360SJames Bottomley 184979cb1819SJames Bottomley i->expander_attr_cont.ac.class = &sas_expander_class.class; 185079cb1819SJames Bottomley i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; 185179cb1819SJames Bottomley i->expander_attr_cont.ac.match = sas_expander_match; 185279cb1819SJames Bottomley transport_container_register(&i->expander_attr_cont); 185379cb1819SJames Bottomley 1854c7ebbbceSChristoph Hellwig i->f = ft; 1855c7ebbbceSChristoph Hellwig 1856c7ebbbceSChristoph Hellwig count = 0; 185765c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(initiator_port_protocols); 185865c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(target_port_protocols); 185965c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(device_type); 186065c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(sas_address); 186165c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(phy_identifier); 186265c92b09SJames Bottomley //SETUP_PHY_ATTRIBUTE(port_identifier); 186365c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(negotiated_linkrate); 186465c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); 1865d24e1eebSJames Bottomley SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); 186665c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); 1867d24e1eebSJames Bottomley SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); 1868c3ee74c4SChristoph Hellwig 186965c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(invalid_dword_count); 187065c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(running_disparity_error_count); 187165c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); 187265c92b09SJames Bottomley SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); 187365c92b09SJames Bottomley SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); 187465c92b09SJames Bottomley SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); 1875acbf167dSDarrick J. Wong SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); 1876c7ebbbceSChristoph Hellwig i->phy_attrs[count] = NULL; 1877c7ebbbceSChristoph Hellwig 1878c7ebbbceSChristoph Hellwig count = 0; 187965c92b09SJames Bottomley SETUP_PORT_ATTRIBUTE(num_phys); 188065c92b09SJames Bottomley i->port_attrs[count] = NULL; 188165c92b09SJames Bottomley 188265c92b09SJames Bottomley count = 0; 1883c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); 1884c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); 1885c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_device_type); 1886c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_sas_address); 1887c7ebbbceSChristoph Hellwig SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); 1888cdc43ae3SHannes Reinecke SETUP_RPORT_ATTRIBUTE(rphy_scsi_target_id); 1889dd9fbb52SJames Bottomley SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, 1890dd9fbb52SJames Bottomley get_enclosure_identifier); 1891dd9fbb52SJames Bottomley SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, 1892dd9fbb52SJames Bottomley get_bay_identifier); 1893c7ebbbceSChristoph Hellwig i->rphy_attrs[count] = NULL; 1894c7ebbbceSChristoph Hellwig 189542ab0360SJames Bottomley count = 0; 189642ab0360SJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); 189742ab0360SJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); 189842ab0360SJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); 18990f88009dSJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_supported); 19000f88009dSJames Bottomley SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_enabled); 190142ab0360SJames Bottomley i->end_dev_attrs[count] = NULL; 190242ab0360SJames Bottomley 190379cb1819SJames Bottomley count = 0; 190479cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(vendor_id); 190579cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(product_id); 190679cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(product_rev); 190779cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); 190879cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(component_id); 190979cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(component_revision_id); 191079cb1819SJames Bottomley SETUP_EXPANDER_ATTRIBUTE(level); 191179cb1819SJames Bottomley i->expander_attrs[count] = NULL; 191279cb1819SJames Bottomley 1913c7ebbbceSChristoph Hellwig return &i->t; 1914c7ebbbceSChristoph Hellwig } 1915c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_attach_transport); 1916c7ebbbceSChristoph Hellwig 1917c7ebbbceSChristoph Hellwig /** 1918eb44820cSRob Landley * sas_release_transport - release SAS transport template instance 1919c7ebbbceSChristoph Hellwig * @t: transport template instance 1920c7ebbbceSChristoph Hellwig */ 1921c7ebbbceSChristoph Hellwig void sas_release_transport(struct scsi_transport_template *t) 1922c7ebbbceSChristoph Hellwig { 1923c7ebbbceSChristoph Hellwig struct sas_internal *i = to_sas_internal(t); 1924c7ebbbceSChristoph Hellwig 1925c7ebbbceSChristoph Hellwig transport_container_unregister(&i->t.host_attrs); 1926c7ebbbceSChristoph Hellwig transport_container_unregister(&i->phy_attr_cont); 192765c92b09SJames Bottomley transport_container_unregister(&i->port_attr_cont); 1928c7ebbbceSChristoph Hellwig transport_container_unregister(&i->rphy_attr_cont); 1929db82f841SJames Bottomley transport_container_unregister(&i->end_dev_attr_cont); 193079cb1819SJames Bottomley transport_container_unregister(&i->expander_attr_cont); 1931c7ebbbceSChristoph Hellwig 1932c7ebbbceSChristoph Hellwig kfree(i); 1933c7ebbbceSChristoph Hellwig } 1934c7ebbbceSChristoph Hellwig EXPORT_SYMBOL(sas_release_transport); 1935c7ebbbceSChristoph Hellwig 1936c7ebbbceSChristoph Hellwig static __init int sas_transport_init(void) 1937c7ebbbceSChristoph Hellwig { 1938c7ebbbceSChristoph Hellwig int error; 1939c7ebbbceSChristoph Hellwig 1940c7ebbbceSChristoph Hellwig error = transport_class_register(&sas_host_class); 1941c7ebbbceSChristoph Hellwig if (error) 1942c7ebbbceSChristoph Hellwig goto out; 1943c7ebbbceSChristoph Hellwig error = transport_class_register(&sas_phy_class); 1944c7ebbbceSChristoph Hellwig if (error) 1945c7ebbbceSChristoph Hellwig goto out_unregister_transport; 194665c92b09SJames Bottomley error = transport_class_register(&sas_port_class); 1947c7ebbbceSChristoph Hellwig if (error) 1948c7ebbbceSChristoph Hellwig goto out_unregister_phy; 194965c92b09SJames Bottomley error = transport_class_register(&sas_rphy_class); 195065c92b09SJames Bottomley if (error) 195165c92b09SJames Bottomley goto out_unregister_port; 195242ab0360SJames Bottomley error = transport_class_register(&sas_end_dev_class); 195342ab0360SJames Bottomley if (error) 195442ab0360SJames Bottomley goto out_unregister_rphy; 195579cb1819SJames Bottomley error = transport_class_register(&sas_expander_class); 195679cb1819SJames Bottomley if (error) 195779cb1819SJames Bottomley goto out_unregister_end_dev; 1958c7ebbbceSChristoph Hellwig 1959c7ebbbceSChristoph Hellwig return 0; 1960c7ebbbceSChristoph Hellwig 196179cb1819SJames Bottomley out_unregister_end_dev: 196279cb1819SJames Bottomley transport_class_unregister(&sas_end_dev_class); 196342ab0360SJames Bottomley out_unregister_rphy: 196442ab0360SJames Bottomley transport_class_unregister(&sas_rphy_class); 196565c92b09SJames Bottomley out_unregister_port: 196665c92b09SJames Bottomley transport_class_unregister(&sas_port_class); 1967c7ebbbceSChristoph Hellwig out_unregister_phy: 1968c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_phy_class); 1969c7ebbbceSChristoph Hellwig out_unregister_transport: 1970c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_host_class); 1971c7ebbbceSChristoph Hellwig out: 1972c7ebbbceSChristoph Hellwig return error; 1973c7ebbbceSChristoph Hellwig 1974c7ebbbceSChristoph Hellwig } 1975c7ebbbceSChristoph Hellwig 1976c7ebbbceSChristoph Hellwig static void __exit sas_transport_exit(void) 1977c7ebbbceSChristoph Hellwig { 1978c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_host_class); 1979c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_phy_class); 198065c92b09SJames Bottomley transport_class_unregister(&sas_port_class); 1981c7ebbbceSChristoph Hellwig transport_class_unregister(&sas_rphy_class); 198242ab0360SJames Bottomley transport_class_unregister(&sas_end_dev_class); 198379cb1819SJames Bottomley transport_class_unregister(&sas_expander_class); 1984c7ebbbceSChristoph Hellwig } 1985c7ebbbceSChristoph Hellwig 1986c7ebbbceSChristoph Hellwig MODULE_AUTHOR("Christoph Hellwig"); 198786b9c4c1SAlexis Bruemmer MODULE_DESCRIPTION("SAS Transport Attributes"); 1988c7ebbbceSChristoph Hellwig MODULE_LICENSE("GPL"); 1989c7ebbbceSChristoph Hellwig 1990c7ebbbceSChristoph Hellwig module_init(sas_transport_init); 1991c7ebbbceSChristoph Hellwig module_exit(sas_transport_exit); 1992