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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 | /* * FiberChannel transport specific attributes exported to sysfs. * * Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * ======== * * Copyright (C) 2004-2005 James Smart, Emulex Corporation * Rewrite for host, target, device, and remote port attributes, * statistics, and service functions... * */ #ifndef SCSI_TRANSPORT_FC_H #define SCSI_TRANSPORT_FC_H #include <linux/config.h> #include <linux/sched.h> #include <scsi/scsi.h> struct scsi_transport_template; /* * FC Port definitions - Following FC HBAAPI guidelines * * Note: Not all binary values for the different fields match HBAAPI. * Instead, we use densely packed ordinal values or enums. * We get away with this as we never present the actual binary values * externally. For sysfs, we always present the string that describes * the value. Thus, an admin doesn't need a magic HBAAPI decoder ring * to understand the values. The HBAAPI user-space library is free to * convert the strings into the HBAAPI-specified binary values. * * Note: Not all HBAAPI-defined values are contained in the definitions * below. Those not appropriate to an fc_host (e.g. FCP initiator) have * been removed. */ /* * fc_port_type: If you alter this, you also need to alter scsi_transport_fc.c * (for the ascii descriptions). */ enum fc_port_type { FC_PORTTYPE_UNKNOWN, FC_PORTTYPE_OTHER, FC_PORTTYPE_NOTPRESENT, FC_PORTTYPE_NPORT, /* Attached to FPort */ FC_PORTTYPE_NLPORT, /* (Public) Loop w/ FLPort */ FC_PORTTYPE_LPORT, /* (Private) Loop w/o FLPort */ FC_PORTTYPE_PTP, /* Point to Point w/ another NPort */ }; /* * fc_port_state: If you alter this, you also need to alter scsi_transport_fc.c * (for the ascii descriptions). */ enum fc_port_state { FC_PORTSTATE_UNKNOWN, FC_PORTSTATE_NOTPRESENT, FC_PORTSTATE_ONLINE, FC_PORTSTATE_OFFLINE, /* User has taken Port Offline */ FC_PORTSTATE_BLOCKED, FC_PORTSTATE_BYPASSED, FC_PORTSTATE_DIAGNOSTICS, FC_PORTSTATE_LINKDOWN, FC_PORTSTATE_ERROR, FC_PORTSTATE_LOOPBACK, FC_PORTSTATE_DELETED, }; /* * FC Classes of Service * Note: values are not enumerated, as they can be "or'd" together * for reporting (e.g. report supported_classes). If you alter this list, * you also need to alter scsi_transport_fc.c (for the ascii descriptions). */ #define FC_COS_UNSPECIFIED 0 #define FC_COS_CLASS1 2 #define FC_COS_CLASS2 4 #define FC_COS_CLASS3 8 #define FC_COS_CLASS4 0x10 #define FC_COS_CLASS6 0x40 /* * FC Port Speeds * Note: values are not enumerated, as they can be "or'd" together * for reporting (e.g. report supported_speeds). If you alter this list, * you also need to alter scsi_transport_fc.c (for the ascii descriptions). */ #define FC_PORTSPEED_UNKNOWN 0 /* Unknown - transceiver incapable of reporting */ #define FC_PORTSPEED_1GBIT 1 #define FC_PORTSPEED_2GBIT 2 #define FC_PORTSPEED_4GBIT 4 #define FC_PORTSPEED_10GBIT 8 #define FC_PORTSPEED_NOT_NEGOTIATED (1 << 15) /* Speed not established */ /* * fc_tgtid_binding_type: If you alter this, you also need to alter * scsi_transport_fc.c (for the ascii descriptions). */ enum fc_tgtid_binding_type { FC_TGTID_BIND_NONE, FC_TGTID_BIND_BY_WWPN, FC_TGTID_BIND_BY_WWNN, FC_TGTID_BIND_BY_ID, }; /* * FC Remote Port Roles * Note: values are not enumerated, as they can be "or'd" together * for reporting (e.g. report roles). If you alter this list, * you also need to alter scsi_transport_fc.c (for the ascii descriptions). */ #define FC_RPORT_ROLE_UNKNOWN 0x00 #define FC_RPORT_ROLE_FCP_TARGET 0x01 #define FC_RPORT_ROLE_FCP_INITIATOR 0x02 #define FC_RPORT_ROLE_IP_PORT 0x04 /* * fc_rport_identifiers: This set of data contains all elements * to uniquely identify a remote FC port. The driver uses this data * to report the existence of a remote FC port in the topology. Internally, * the transport uses this data for attributes and to manage consistent * target id bindings. */ struct fc_rport_identifiers { u64 node_name; u64 port_name; u32 port_id; u32 roles; }; /* Macro for use in defining Remote Port attributes */ #define FC_RPORT_ATTR(_name,_mode,_show,_store) \ struct class_device_attribute class_device_attr_rport_##_name = \ __ATTR(_name,_mode,_show,_store) /* * FC Remote Port Attributes * * This structure exists for each remote FC port that a LLDD notifies * the subsystem of. A remote FC port may or may not be a SCSI Target, * also be a SCSI initiator, IP endpoint, etc. As such, the remote * port is considered a separate entity, independent of "role" (such * as scsi target). * * -- * * Attributes are based on HBAAPI V2.0 definitions. Only those * attributes that are determinable by the local port (aka Host) * are contained. * * Fixed attributes are not expected to change. The driver is * expected to set these values after successfully calling * fc_remote_port_add(). The transport fully manages all get functions * w/o driver interaction. * * Dynamic attributes are expected to change. The driver participates * in all get/set operations via functions provided by the driver. * * Private attributes are transport-managed values. They are fully * managed by the transport w/o driver interaction. */ struct fc_rport { /* aka fc_starget_attrs */ /* Fixed Attributes */ u32 maxframe_size; u32 supported_classes; /* Dynamic Attributes */ u32 dev_loss_tmo; /* Remote Port loss timeout in seconds. */ /* Private (Transport-managed) Attributes */ u64 node_name; u64 port_name; u32 port_id; u32 roles; enum fc_port_state port_state; /* Will only be ONLINE or UNKNOWN */ u32 scsi_target_id; /* exported data */ void *dd_data; /* Used for driver-specific storage */ /* internal data */ unsigned int channel; u32 number; struct list_head peers; struct device dev; struct work_struct dev_loss_work; struct work_struct scan_work; } __attribute__((aligned(sizeof(unsigned long)))); #define dev_to_rport(d) \ container_of(d, struct fc_rport, dev) #define transport_class_to_rport(classdev) \ dev_to_rport(classdev->dev) #define rport_to_shost(r) \ dev_to_shost(r->dev.parent) /* * FC SCSI Target Attributes * * The SCSI Target is considered an extention of a remote port (as * a remote port can be more than a SCSI Target). Within the scsi * subsystem, we leave the Target as a separate entity. Doing so * provides backward compatibility with prior FC transport api's, * and lets remote ports be handled entirely within the FC transport * and independently from the scsi subsystem. The drawback is that * some data will be duplicated. */ struct fc_starget_attrs { /* aka fc_target_attrs */ /* Dynamic Attributes */ u64 node_name; u64 port_name; u32 port_id; }; #define fc_starget_node_name(x) \ (((struct fc_starget_attrs *)&(x)->starget_data)->node_name) #define fc_starget_port_name(x) \ (((struct fc_starget_attrs *)&(x)->starget_data)->port_name) #define fc_starget_port_id(x) \ (((struct fc_starget_attrs *)&(x)->starget_data)->port_id) #define starget_to_rport(s) \ scsi_is_fc_rport(s->dev.parent) ? dev_to_rport(s->dev.parent) : NULL /* * FC Local Port (Host) Statistics */ /* FC Statistics - Following FC HBAAPI v2.0 guidelines */ struct fc_host_statistics { /* port statistics */ u64 seconds_since_last_reset; u64 tx_frames; u64 tx_words; u64 rx_frames; u64 rx_words; u64 lip_count; u64 nos_count; u64 error_frames; u64 dumped_frames; u64 link_failure_count; u64 loss_of_sync_count; u64 loss_of_signal_count; u64 prim_seq_protocol_err_count; u64 invalid_tx_word_count; u64 invalid_crc_count; /* fc4 statistics (only FCP supported currently) */ u64 fcp_input_requests; u64 fcp_output_requests; u64 fcp_control_requests; u64 fcp_input_megabytes; u64 fcp_output_megabytes; }; /* * FC Local Port (Host) Attributes * * Attributes are based on HBAAPI V2.0 definitions. * Note: OSDeviceName is determined by user-space library * * Fixed attributes are not expected to change. The driver is * expected to set these values after successfully calling scsi_add_host(). * The transport fully manages all get functions w/o driver interaction. * * Dynamic attributes are expected to change. The driver participates * in all get/set operations via functions provided by the driver. * * Private attributes are transport-managed values. They are fully * managed by the transport w/o driver interaction. */ #define FC_FC4_LIST_SIZE 32 #define FC_SYMBOLIC_NAME_SIZE 256 #define FC_VERSION_STRING_SIZE 64 #define FC_SERIAL_NUMBER_SIZE 80 struct fc_host_attrs { /* Fixed Attributes */ u64 node_name; u64 port_name; u64 permanent_port_name; u32 supported_classes; u8 supported_fc4s[FC_FC4_LIST_SIZE]; char symbolic_name[FC_SYMBOLIC_NAME_SIZE]; u32 supported_speeds; u32 maxframe_size; char serial_number[FC_SERIAL_NUMBER_SIZE]; /* Dynamic Attributes */ u32 port_id; enum fc_port_type port_type; enum fc_port_state port_state; u8 active_fc4s[FC_FC4_LIST_SIZE]; u32 speed; u64 fabric_name; /* Private (Transport-managed) Attributes */ enum fc_tgtid_binding_type tgtid_bind_type; /* internal data */ struct list_head rports; struct list_head rport_bindings; u32 next_rport_number; u32 next_target_id; u8 flags; struct work_struct rport_del_work; }; /* values for struct fc_host_attrs "flags" field: */ #define FC_SHOST_RPORT_DEL_SCHEDULED 0x01 #define fc_host_node_name(x) \ (((struct fc_host_attrs *)(x)->shost_data)->node_name) #define fc_host_port_name(x) \ (((struct fc_host_attrs *)(x)->shost_data)->port_name) #define fc_host_permanent_port_name(x) \ (((struct fc_host_attrs *)(x)->shost_data)->permanent_port_name) #define fc_host_supported_classes(x) \ (((struct fc_host_attrs *)(x)->shost_data)->supported_classes) #define fc_host_supported_fc4s(x) \ (((struct fc_host_attrs *)(x)->shost_data)->supported_fc4s) #define fc_host_symbolic_name(x) \ (((struct fc_host_attrs *)(x)->shost_data)->symbolic_name) #define fc_host_supported_speeds(x) \ (((struct fc_host_attrs *)(x)->shost_data)->supported_speeds) #define fc_host_maxframe_size(x) \ (((struct fc_host_attrs *)(x)->shost_data)->maxframe_size) #define fc_host_serial_number(x) \ (((struct fc_host_attrs *)(x)->shost_data)->serial_number) #define fc_host_port_id(x) \ (((struct fc_host_attrs *)(x)->shost_data)->port_id) #define fc_host_port_type(x) \ (((struct fc_host_attrs *)(x)->shost_data)->port_type) #define fc_host_port_state(x) \ (((struct fc_host_attrs *)(x)->shost_data)->port_state) #define fc_host_active_fc4s(x) \ (((struct fc_host_attrs *)(x)->shost_data)->active_fc4s) #define fc_host_speed(x) \ (((struct fc_host_attrs *)(x)->shost_data)->speed) #define fc_host_fabric_name(x) \ (((struct fc_host_attrs *)(x)->shost_data)->fabric_name) #define fc_host_tgtid_bind_type(x) \ (((struct fc_host_attrs *)(x)->shost_data)->tgtid_bind_type) #define fc_host_rports(x) \ (((struct fc_host_attrs *)(x)->shost_data)->rports) #define fc_host_rport_bindings(x) \ (((struct fc_host_attrs *)(x)->shost_data)->rport_bindings) #define fc_host_next_rport_number(x) \ (((struct fc_host_attrs *)(x)->shost_data)->next_rport_number) #define fc_host_next_target_id(x) \ (((struct fc_host_attrs *)(x)->shost_data)->next_target_id) #define fc_host_flags(x) \ (((struct fc_host_attrs *)(x)->shost_data)->flags) #define fc_host_rport_del_work(x) \ (((struct fc_host_attrs *)(x)->shost_data)->rport_del_work) /* The functions by which the transport class and the driver communicate */ struct fc_function_template { void (*get_rport_dev_loss_tmo)(struct fc_rport *); void (*set_rport_dev_loss_tmo)(struct fc_rport *, u32); void (*get_starget_node_name)(struct scsi_target *); void (*get_starget_port_name)(struct scsi_target *); void (*get_starget_port_id)(struct scsi_target *); void (*get_host_port_id)(struct Scsi_Host *); void (*get_host_port_type)(struct Scsi_Host *); void (*get_host_port_state)(struct Scsi_Host *); void (*get_host_active_fc4s)(struct Scsi_Host *); void (*get_host_speed)(struct Scsi_Host *); void (*get_host_fabric_name)(struct Scsi_Host *); struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *); void (*reset_fc_host_stats)(struct Scsi_Host *); int (*issue_fc_host_lip)(struct Scsi_Host *); /* allocation lengths for host-specific data */ u32 dd_fcrport_size; /* * The driver sets these to tell the transport class it * wants the attributes displayed in sysfs. If the show_ flag * is not set, the attribute will be private to the transport * class */ /* remote port fixed attributes */ unsigned long show_rport_maxframe_size:1; unsigned long show_rport_supported_classes:1; unsigned long show_rport_dev_loss_tmo:1; /* * target dynamic attributes * These should all be "1" if the driver uses the remote port * add/delete functions (so attributes reflect rport values). */ unsigned long show_starget_node_name:1; unsigned long show_starget_port_name:1; unsigned long show_starget_port_id:1; /* host fixed attributes */ unsigned long show_host_node_name:1; unsigned long show_host_port_name:1; unsigned long show_host_permanent_port_name:1; unsigned long show_host_supported_classes:1; unsigned long show_host_supported_fc4s:1; unsigned long show_host_symbolic_name:1; unsigned long show_host_supported_speeds:1; unsigned long show_host_maxframe_size:1; unsigned long show_host_serial_number:1; /* host dynamic attributes */ unsigned long show_host_port_id:1; unsigned long show_host_port_type:1; unsigned long show_host_port_state:1; unsigned long show_host_active_fc4s:1; unsigned long show_host_speed:1; unsigned long show_host_fabric_name:1; }; /** * fc_remote_port_chkready - called to validate the remote port state * prior to initiating io to the port. * * Returns a scsi result code that can be returned by the LLDD. * * @rport: remote port to be checked **/ static inline int fc_remote_port_chkready(struct fc_rport *rport) { int result; switch (rport->port_state) { case FC_PORTSTATE_ONLINE: result = 0; break; case FC_PORTSTATE_BLOCKED: result = DID_BUS_BUSY << 16; break; default: result = DID_NO_CONNECT << 16; break; } return result; } struct scsi_transport_template *fc_attach_transport( struct fc_function_template *); void fc_release_transport(struct scsi_transport_template *); void fc_remove_host(struct Scsi_Host *); struct fc_rport *fc_remote_port_add(struct Scsi_Host *shost, int channel, struct fc_rport_identifiers *ids); void fc_remote_port_delete(struct fc_rport *rport); void fc_remote_port_rolechg(struct fc_rport *rport, u32 roles); int scsi_is_fc_rport(const struct device *); static inline u64 wwn_to_u64(u8 *wwn) { return (u64)wwn[0] << 56 | (u64)wwn[1] << 48 | (u64)wwn[2] << 40 | (u64)wwn[3] << 32 | (u64)wwn[4] << 24 | (u64)wwn[5] << 16 | (u64)wwn[6] << 8 | (u64)wwn[7]; } #endif /* SCSI_TRANSPORT_FC_H */ |