Commit | Line | Data |
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9ef3e4a4 | 1 | /* |
1da177e4 LT |
2 | * FiberChannel transport specific attributes exported to sysfs. |
3 | * | |
4 | * Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | * ======== | |
21 | * | |
a53eb5e0 | 22 | * Copyright (C) 2004-2007 James Smart, Emulex Corporation |
1da177e4 LT |
23 | * Rewrite for host, target, device, and remote port attributes, |
24 | * statistics, and service functions... | |
25 | * | |
26 | */ | |
27 | #ifndef SCSI_TRANSPORT_FC_H | |
28 | #define SCSI_TRANSPORT_FC_H | |
29 | ||
4e57b681 | 30 | #include <linux/sched.h> |
19a7b4ae | 31 | #include <scsi/scsi.h> |
84314fd4 | 32 | #include <scsi/scsi_netlink.h> |
1da177e4 LT |
33 | |
34 | struct scsi_transport_template; | |
35 | ||
1da177e4 LT |
36 | /* |
37 | * FC Port definitions - Following FC HBAAPI guidelines | |
38 | * | |
39 | * Note: Not all binary values for the different fields match HBAAPI. | |
40 | * Instead, we use densely packed ordinal values or enums. | |
41 | * We get away with this as we never present the actual binary values | |
42 | * externally. For sysfs, we always present the string that describes | |
43 | * the value. Thus, an admin doesn't need a magic HBAAPI decoder ring | |
44 | * to understand the values. The HBAAPI user-space library is free to | |
45 | * convert the strings into the HBAAPI-specified binary values. | |
46 | * | |
47 | * Note: Not all HBAAPI-defined values are contained in the definitions | |
48 | * below. Those not appropriate to an fc_host (e.g. FCP initiator) have | |
49 | * been removed. | |
50 | */ | |
51 | ||
52 | /* | |
53 | * fc_port_type: If you alter this, you also need to alter scsi_transport_fc.c | |
54 | * (for the ascii descriptions). | |
55 | */ | |
56 | enum fc_port_type { | |
57 | FC_PORTTYPE_UNKNOWN, | |
58 | FC_PORTTYPE_OTHER, | |
59 | FC_PORTTYPE_NOTPRESENT, | |
60 | FC_PORTTYPE_NPORT, /* Attached to FPort */ | |
61 | FC_PORTTYPE_NLPORT, /* (Public) Loop w/ FLPort */ | |
62 | FC_PORTTYPE_LPORT, /* (Private) Loop w/o FLPort */ | |
63 | FC_PORTTYPE_PTP, /* Point to Point w/ another NPort */ | |
a53eb5e0 | 64 | FC_PORTTYPE_NPIV, /* VPORT based on NPIV */ |
1da177e4 LT |
65 | }; |
66 | ||
a53eb5e0 | 67 | |
1da177e4 LT |
68 | /* |
69 | * fc_port_state: If you alter this, you also need to alter scsi_transport_fc.c | |
70 | * (for the ascii descriptions). | |
71 | */ | |
72 | enum fc_port_state { | |
73 | FC_PORTSTATE_UNKNOWN, | |
74 | FC_PORTSTATE_NOTPRESENT, | |
75 | FC_PORTSTATE_ONLINE, | |
76 | FC_PORTSTATE_OFFLINE, /* User has taken Port Offline */ | |
77 | FC_PORTSTATE_BLOCKED, | |
78 | FC_PORTSTATE_BYPASSED, | |
79 | FC_PORTSTATE_DIAGNOSTICS, | |
80 | FC_PORTSTATE_LINKDOWN, | |
81 | FC_PORTSTATE_ERROR, | |
82 | FC_PORTSTATE_LOOPBACK, | |
42e33148 | 83 | FC_PORTSTATE_DELETED, |
1da177e4 LT |
84 | }; |
85 | ||
86 | ||
a53eb5e0 JS |
87 | /* |
88 | * fc_vport_state: If you alter this, you also need to alter | |
89 | * scsi_transport_fc.c (for the ascii descriptions). | |
90 | */ | |
91 | enum fc_vport_state { | |
92 | FC_VPORT_UNKNOWN, | |
93 | FC_VPORT_ACTIVE, | |
94 | FC_VPORT_DISABLED, | |
95 | FC_VPORT_LINKDOWN, | |
96 | FC_VPORT_INITIALIZING, | |
97 | FC_VPORT_NO_FABRIC_SUPP, | |
98 | FC_VPORT_NO_FABRIC_RSCS, | |
99 | FC_VPORT_FABRIC_LOGOUT, | |
100 | FC_VPORT_FABRIC_REJ_WWN, | |
101 | FC_VPORT_FAILED, | |
102 | }; | |
103 | ||
104 | ||
105 | ||
9ef3e4a4 | 106 | /* |
1da177e4 LT |
107 | * FC Classes of Service |
108 | * Note: values are not enumerated, as they can be "or'd" together | |
109 | * for reporting (e.g. report supported_classes). If you alter this list, | |
110 | * you also need to alter scsi_transport_fc.c (for the ascii descriptions). | |
111 | */ | |
112 | #define FC_COS_UNSPECIFIED 0 | |
113 | #define FC_COS_CLASS1 2 | |
114 | #define FC_COS_CLASS2 4 | |
115 | #define FC_COS_CLASS3 8 | |
116 | #define FC_COS_CLASS4 0x10 | |
117 | #define FC_COS_CLASS6 0x40 | |
118 | ||
9ef3e4a4 | 119 | /* |
1da177e4 LT |
120 | * FC Port Speeds |
121 | * Note: values are not enumerated, as they can be "or'd" together | |
122 | * for reporting (e.g. report supported_speeds). If you alter this list, | |
123 | * you also need to alter scsi_transport_fc.c (for the ascii descriptions). | |
124 | */ | |
125 | #define FC_PORTSPEED_UNKNOWN 0 /* Unknown - transceiver | |
126 | incapable of reporting */ | |
127 | #define FC_PORTSPEED_1GBIT 1 | |
128 | #define FC_PORTSPEED_2GBIT 2 | |
1832a586 AH |
129 | #define FC_PORTSPEED_4GBIT 4 |
130 | #define FC_PORTSPEED_10GBIT 8 | |
c3d2350a JS |
131 | #define FC_PORTSPEED_8GBIT 0x10 |
132 | #define FC_PORTSPEED_16GBIT 0x20 | |
1da177e4 LT |
133 | #define FC_PORTSPEED_NOT_NEGOTIATED (1 << 15) /* Speed not established */ |
134 | ||
135 | /* | |
136 | * fc_tgtid_binding_type: If you alter this, you also need to alter | |
137 | * scsi_transport_fc.c (for the ascii descriptions). | |
138 | */ | |
139 | enum fc_tgtid_binding_type { | |
140 | FC_TGTID_BIND_NONE, | |
141 | FC_TGTID_BIND_BY_WWPN, | |
142 | FC_TGTID_BIND_BY_WWNN, | |
143 | FC_TGTID_BIND_BY_ID, | |
144 | }; | |
145 | ||
146 | /* | |
a53eb5e0 | 147 | * FC Port Roles |
1da177e4 LT |
148 | * Note: values are not enumerated, as they can be "or'd" together |
149 | * for reporting (e.g. report roles). If you alter this list, | |
150 | * you also need to alter scsi_transport_fc.c (for the ascii descriptions). | |
151 | */ | |
a53eb5e0 JS |
152 | #define FC_PORT_ROLE_UNKNOWN 0x00 |
153 | #define FC_PORT_ROLE_FCP_TARGET 0x01 | |
154 | #define FC_PORT_ROLE_FCP_INITIATOR 0x02 | |
155 | #define FC_PORT_ROLE_IP_PORT 0x04 | |
156 | ||
157 | /* The following are for compatibility */ | |
158 | #define FC_RPORT_ROLE_UNKNOWN FC_PORT_ROLE_UNKNOWN | |
159 | #define FC_RPORT_ROLE_FCP_TARGET FC_PORT_ROLE_FCP_TARGET | |
160 | #define FC_RPORT_ROLE_FCP_INITIATOR FC_PORT_ROLE_FCP_INITIATOR | |
161 | #define FC_RPORT_ROLE_IP_PORT FC_PORT_ROLE_IP_PORT | |
162 | ||
163 | ||
164 | /* Macro for use in defining Virtual Port attributes */ | |
ee959b00 TJ |
165 | #define FC_VPORT_ATTR(_name,_mode,_show,_store) \ |
166 | struct device_attribute dev_attr_vport_##_name = \ | |
a53eb5e0 | 167 | __ATTR(_name,_mode,_show,_store) |
1da177e4 | 168 | |
a30c3f69 AV |
169 | /* |
170 | * fc_vport_identifiers: This set of data contains all elements | |
171 | * to uniquely identify and instantiate a FC virtual port. | |
172 | * | |
173 | * Notes: | |
174 | * symbolic_name: The driver is to append the symbolic_name string data | |
175 | * to the symbolic_node_name data that it generates by default. | |
176 | * the resulting combination should then be registered with the switch. | |
177 | * It is expected that things like Xen may stuff a VM title into | |
178 | * this field. | |
179 | */ | |
180 | #define FC_VPORT_SYMBOLIC_NAMELEN 64 | |
181 | struct fc_vport_identifiers { | |
182 | u64 node_name; | |
183 | u64 port_name; | |
184 | u32 roles; | |
185 | bool disable; | |
186 | enum fc_port_type vport_type; /* only FC_PORTTYPE_NPIV allowed */ | |
187 | char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN]; | |
188 | }; | |
1da177e4 | 189 | |
a53eb5e0 JS |
190 | /* |
191 | * FC Virtual Port Attributes | |
192 | * | |
193 | * This structure exists for each FC port is a virtual FC port. Virtual | |
194 | * ports share the physical link with the Physical port. Each virtual | |
195 | * ports has a unique presense on the SAN, and may be instantiated via | |
196 | * NPIV, Virtual Fabrics, or via additional ALPAs. As the vport is a | |
197 | * unique presense, each vport has it's own view of the fabric, | |
1e4478c3 | 198 | * authentication privilege, and priorities. |
a53eb5e0 JS |
199 | * |
200 | * A virtual port may support 1 or more FC4 roles. Typically it is a | |
201 | * FCP Initiator. It could be a FCP Target, or exist sole for an IP over FC | |
202 | * roles. FC port attributes for the vport will be reported on any | |
203 | * fc_host class object allocated for an FCP Initiator. | |
204 | * | |
205 | * -- | |
206 | * | |
207 | * Fixed attributes are not expected to change. The driver is | |
208 | * expected to set these values after receiving the fc_vport structure | |
209 | * via the vport_create() call from the transport. | |
210 | * The transport fully manages all get functions w/o driver interaction. | |
211 | * | |
212 | * Dynamic attributes are expected to change. The driver participates | |
213 | * in all get/set operations via functions provided by the driver. | |
214 | * | |
215 | * Private attributes are transport-managed values. They are fully | |
216 | * managed by the transport w/o driver interaction. | |
217 | */ | |
218 | ||
a53eb5e0 JS |
219 | struct fc_vport { |
220 | /* Fixed Attributes */ | |
221 | ||
222 | /* Dynamic Attributes */ | |
223 | ||
224 | /* Private (Transport-managed) Attributes */ | |
225 | enum fc_vport_state vport_state; | |
226 | enum fc_vport_state vport_last_state; | |
227 | u64 node_name; | |
228 | u64 port_name; | |
229 | u32 roles; | |
230 | u32 vport_id; /* Admin Identifier for the vport */ | |
231 | enum fc_port_type vport_type; | |
232 | char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN]; | |
233 | ||
234 | /* exported data */ | |
235 | void *dd_data; /* Used for driver-specific storage */ | |
236 | ||
237 | /* internal data */ | |
238 | struct Scsi_Host *shost; /* Physical Port Parent */ | |
239 | unsigned int channel; | |
240 | u32 number; | |
241 | u8 flags; | |
242 | struct list_head peers; | |
243 | struct device dev; | |
9ef3e4a4 | 244 | struct work_struct vport_delete_work; |
a53eb5e0 JS |
245 | } __attribute__((aligned(sizeof(unsigned long)))); |
246 | ||
247 | /* bit field values for struct fc_vport "flags" field: */ | |
248 | #define FC_VPORT_CREATING 0x01 | |
249 | #define FC_VPORT_DELETING 0x02 | |
250 | #define FC_VPORT_DELETED 0x04 | |
251 | #define FC_VPORT_DEL 0x06 /* Any DELETE state */ | |
252 | ||
253 | #define dev_to_vport(d) \ | |
254 | container_of(d, struct fc_vport, dev) | |
ee959b00 TJ |
255 | #define transport_class_to_vport(dev) \ |
256 | dev_to_vport(dev->parent) | |
a53eb5e0 JS |
257 | #define vport_to_shost(v) \ |
258 | (v->shost) | |
259 | #define vport_to_shost_channel(v) \ | |
260 | (v->channel) | |
261 | #define vport_to_parent(v) \ | |
262 | (v->dev.parent) | |
263 | ||
264 | ||
265 | /* Error return codes for vport_create() callback */ | |
266 | #define VPCERR_UNSUPPORTED -ENOSYS /* no driver/adapter | |
267 | support */ | |
268 | #define VPCERR_BAD_WWN -ENOTUNIQ /* driver validation | |
269 | of WWNs failed */ | |
270 | #define VPCERR_NO_FABRIC_SUPP -EOPNOTSUPP /* Fabric connection | |
271 | is loop or the | |
272 | Fabric Port does | |
273 | not support NPIV */ | |
274 | ||
1da177e4 LT |
275 | /* |
276 | * fc_rport_identifiers: This set of data contains all elements | |
277 | * to uniquely identify a remote FC port. The driver uses this data | |
278 | * to report the existence of a remote FC port in the topology. Internally, | |
279 | * the transport uses this data for attributes and to manage consistent | |
280 | * target id bindings. | |
281 | */ | |
282 | struct fc_rport_identifiers { | |
283 | u64 node_name; | |
284 | u64 port_name; | |
285 | u32 port_id; | |
286 | u32 roles; | |
287 | }; | |
288 | ||
a53eb5e0 | 289 | |
1da177e4 LT |
290 | /* Macro for use in defining Remote Port attributes */ |
291 | #define FC_RPORT_ATTR(_name,_mode,_show,_store) \ | |
ee959b00 | 292 | struct device_attribute dev_attr_rport_##_name = \ |
1da177e4 LT |
293 | __ATTR(_name,_mode,_show,_store) |
294 | ||
295 | ||
296 | /* | |
297 | * FC Remote Port Attributes | |
298 | * | |
299 | * This structure exists for each remote FC port that a LLDD notifies | |
300 | * the subsystem of. A remote FC port may or may not be a SCSI Target, | |
301 | * also be a SCSI initiator, IP endpoint, etc. As such, the remote | |
302 | * port is considered a separate entity, independent of "role" (such | |
303 | * as scsi target). | |
304 | * | |
305 | * -- | |
306 | * | |
307 | * Attributes are based on HBAAPI V2.0 definitions. Only those | |
308 | * attributes that are determinable by the local port (aka Host) | |
309 | * are contained. | |
310 | * | |
311 | * Fixed attributes are not expected to change. The driver is | |
312 | * expected to set these values after successfully calling | |
313 | * fc_remote_port_add(). The transport fully manages all get functions | |
314 | * w/o driver interaction. | |
315 | * | |
316 | * Dynamic attributes are expected to change. The driver participates | |
317 | * in all get/set operations via functions provided by the driver. | |
318 | * | |
319 | * Private attributes are transport-managed values. They are fully | |
320 | * managed by the transport w/o driver interaction. | |
321 | */ | |
322 | ||
323 | struct fc_rport { /* aka fc_starget_attrs */ | |
324 | /* Fixed Attributes */ | |
325 | u32 maxframe_size; | |
326 | u32 supported_classes; | |
327 | ||
328 | /* Dynamic Attributes */ | |
329 | u32 dev_loss_tmo; /* Remote Port loss timeout in seconds. */ | |
330 | ||
331 | /* Private (Transport-managed) Attributes */ | |
332 | u64 node_name; | |
333 | u64 port_name; | |
334 | u32 port_id; | |
335 | u32 roles; | |
336 | enum fc_port_state port_state; /* Will only be ONLINE or UNKNOWN */ | |
337 | u32 scsi_target_id; | |
0f29b966 | 338 | u32 fast_io_fail_tmo; |
1da177e4 LT |
339 | |
340 | /* exported data */ | |
341 | void *dd_data; /* Used for driver-specific storage */ | |
342 | ||
343 | /* internal data */ | |
344 | unsigned int channel; | |
345 | u32 number; | |
aedf3497 | 346 | u8 flags; |
1da177e4 LT |
347 | struct list_head peers; |
348 | struct device dev; | |
c4028958 | 349 | struct delayed_work dev_loss_work; |
1da177e4 | 350 | struct work_struct scan_work; |
c4028958 | 351 | struct delayed_work fail_io_work; |
aedf3497 JS |
352 | struct work_struct stgt_delete_work; |
353 | struct work_struct rport_delete_work; | |
9e4f5e29 | 354 | struct request_queue *rqst_q; /* bsg support */ |
1da177e4 LT |
355 | } __attribute__((aligned(sizeof(unsigned long)))); |
356 | ||
aedf3497 JS |
357 | /* bit field values for struct fc_rport "flags" field: */ |
358 | #define FC_RPORT_DEVLOSS_PENDING 0x01 | |
359 | #define FC_RPORT_SCAN_PENDING 0x02 | |
21098c68 | 360 | #define FC_RPORT_FAST_FAIL_TIMEDOUT 0x04 |
4be98c0c | 361 | #define FC_RPORT_DEVLOSS_CALLBK_DONE 0x08 |
aedf3497 | 362 | |
1da177e4 LT |
363 | #define dev_to_rport(d) \ |
364 | container_of(d, struct fc_rport, dev) | |
ee959b00 TJ |
365 | #define transport_class_to_rport(dev) \ |
366 | dev_to_rport(dev->parent) | |
1da177e4 LT |
367 | #define rport_to_shost(r) \ |
368 | dev_to_shost(r->dev.parent) | |
369 | ||
370 | /* | |
371 | * FC SCSI Target Attributes | |
372 | * | |
373 | * The SCSI Target is considered an extention of a remote port (as | |
374 | * a remote port can be more than a SCSI Target). Within the scsi | |
375 | * subsystem, we leave the Target as a separate entity. Doing so | |
376 | * provides backward compatibility with prior FC transport api's, | |
377 | * and lets remote ports be handled entirely within the FC transport | |
378 | * and independently from the scsi subsystem. The drawback is that | |
379 | * some data will be duplicated. | |
380 | */ | |
381 | ||
382 | struct fc_starget_attrs { /* aka fc_target_attrs */ | |
383 | /* Dynamic Attributes */ | |
384 | u64 node_name; | |
385 | u64 port_name; | |
386 | u32 port_id; | |
387 | }; | |
388 | ||
389 | #define fc_starget_node_name(x) \ | |
390 | (((struct fc_starget_attrs *)&(x)->starget_data)->node_name) | |
391 | #define fc_starget_port_name(x) \ | |
392 | (((struct fc_starget_attrs *)&(x)->starget_data)->port_name) | |
393 | #define fc_starget_port_id(x) \ | |
394 | (((struct fc_starget_attrs *)&(x)->starget_data)->port_id) | |
395 | ||
396 | #define starget_to_rport(s) \ | |
397 | scsi_is_fc_rport(s->dev.parent) ? dev_to_rport(s->dev.parent) : NULL | |
398 | ||
399 | ||
400 | /* | |
401 | * FC Local Port (Host) Statistics | |
402 | */ | |
403 | ||
404 | /* FC Statistics - Following FC HBAAPI v2.0 guidelines */ | |
405 | struct fc_host_statistics { | |
406 | /* port statistics */ | |
407 | u64 seconds_since_last_reset; | |
408 | u64 tx_frames; | |
409 | u64 tx_words; | |
410 | u64 rx_frames; | |
411 | u64 rx_words; | |
412 | u64 lip_count; | |
413 | u64 nos_count; | |
414 | u64 error_frames; | |
415 | u64 dumped_frames; | |
416 | u64 link_failure_count; | |
417 | u64 loss_of_sync_count; | |
418 | u64 loss_of_signal_count; | |
419 | u64 prim_seq_protocol_err_count; | |
420 | u64 invalid_tx_word_count; | |
421 | u64 invalid_crc_count; | |
9ef3e4a4 | 422 | |
1da177e4 LT |
423 | /* fc4 statistics (only FCP supported currently) */ |
424 | u64 fcp_input_requests; | |
425 | u64 fcp_output_requests; | |
426 | u64 fcp_control_requests; | |
427 | u64 fcp_input_megabytes; | |
428 | u64 fcp_output_megabytes; | |
429 | }; | |
430 | ||
431 | ||
84314fd4 JS |
432 | /* |
433 | * FC Event Codes - Polled and Async, following FC HBAAPI v2.0 guidelines | |
434 | */ | |
435 | ||
436 | /* | |
437 | * fc_host_event_code: If you alter this, you also need to alter | |
438 | * scsi_transport_fc.c (for the ascii descriptions). | |
439 | */ | |
440 | enum fc_host_event_code { | |
441 | FCH_EVT_LIP = 0x1, | |
442 | FCH_EVT_LINKUP = 0x2, | |
443 | FCH_EVT_LINKDOWN = 0x3, | |
444 | FCH_EVT_LIPRESET = 0x4, | |
445 | FCH_EVT_RSCN = 0x5, | |
446 | FCH_EVT_ADAPTER_CHANGE = 0x103, | |
447 | FCH_EVT_PORT_UNKNOWN = 0x200, | |
448 | FCH_EVT_PORT_OFFLINE = 0x201, | |
449 | FCH_EVT_PORT_ONLINE = 0x202, | |
450 | FCH_EVT_PORT_FABRIC = 0x204, | |
451 | FCH_EVT_LINK_UNKNOWN = 0x500, | |
452 | FCH_EVT_VENDOR_UNIQUE = 0xffff, | |
453 | }; | |
454 | ||
455 | ||
1da177e4 LT |
456 | /* |
457 | * FC Local Port (Host) Attributes | |
458 | * | |
459 | * Attributes are based on HBAAPI V2.0 definitions. | |
460 | * Note: OSDeviceName is determined by user-space library | |
461 | * | |
462 | * Fixed attributes are not expected to change. The driver is | |
463 | * expected to set these values after successfully calling scsi_add_host(). | |
464 | * The transport fully manages all get functions w/o driver interaction. | |
465 | * | |
466 | * Dynamic attributes are expected to change. The driver participates | |
467 | * in all get/set operations via functions provided by the driver. | |
468 | * | |
469 | * Private attributes are transport-managed values. They are fully | |
470 | * managed by the transport w/o driver interaction. | |
471 | */ | |
472 | ||
473 | #define FC_FC4_LIST_SIZE 32 | |
474 | #define FC_SYMBOLIC_NAME_SIZE 256 | |
475 | #define FC_VERSION_STRING_SIZE 64 | |
476 | #define FC_SERIAL_NUMBER_SIZE 80 | |
477 | ||
478 | struct fc_host_attrs { | |
479 | /* Fixed Attributes */ | |
480 | u64 node_name; | |
481 | u64 port_name; | |
6b7281d0 | 482 | u64 permanent_port_name; |
1da177e4 LT |
483 | u32 supported_classes; |
484 | u8 supported_fc4s[FC_FC4_LIST_SIZE]; | |
1da177e4 LT |
485 | u32 supported_speeds; |
486 | u32 maxframe_size; | |
a53eb5e0 | 487 | u16 max_npiv_vports; |
1da177e4 LT |
488 | char serial_number[FC_SERIAL_NUMBER_SIZE]; |
489 | ||
490 | /* Dynamic Attributes */ | |
491 | u32 port_id; | |
492 | enum fc_port_type port_type; | |
493 | enum fc_port_state port_state; | |
494 | u8 active_fc4s[FC_FC4_LIST_SIZE]; | |
495 | u32 speed; | |
496 | u64 fabric_name; | |
b8d08210 JS |
497 | char symbolic_name[FC_SYMBOLIC_NAME_SIZE]; |
498 | char system_hostname[FC_SYMBOLIC_NAME_SIZE]; | |
43ca910a | 499 | u32 dev_loss_tmo; |
1da177e4 LT |
500 | |
501 | /* Private (Transport-managed) Attributes */ | |
502 | enum fc_tgtid_binding_type tgtid_bind_type; | |
503 | ||
504 | /* internal data */ | |
505 | struct list_head rports; | |
506 | struct list_head rport_bindings; | |
a53eb5e0 | 507 | struct list_head vports; |
1da177e4 LT |
508 | u32 next_rport_number; |
509 | u32 next_target_id; | |
a53eb5e0 JS |
510 | u32 next_vport_number; |
511 | u16 npiv_vports_inuse; | |
1da177e4 | 512 | |
aedf3497 | 513 | /* work queues for rport state manipulation */ |
aab0de24 | 514 | char work_q_name[20]; |
aedf3497 | 515 | struct workqueue_struct *work_q; |
aab0de24 | 516 | char devloss_work_q_name[20]; |
aedf3497 | 517 | struct workqueue_struct *devloss_work_q; |
9e4f5e29 JS |
518 | |
519 | /* bsg support */ | |
520 | struct request_queue *rqst_q; | |
aedf3497 | 521 | }; |
42e33148 | 522 | |
aedf3497 JS |
523 | #define shost_to_fc_host(x) \ |
524 | ((struct fc_host_attrs *)(x)->shost_data) | |
42e33148 | 525 | |
1da177e4 LT |
526 | #define fc_host_node_name(x) \ |
527 | (((struct fc_host_attrs *)(x)->shost_data)->node_name) | |
528 | #define fc_host_port_name(x) \ | |
529 | (((struct fc_host_attrs *)(x)->shost_data)->port_name) | |
6b7281d0 AH |
530 | #define fc_host_permanent_port_name(x) \ |
531 | (((struct fc_host_attrs *)(x)->shost_data)->permanent_port_name) | |
1da177e4 LT |
532 | #define fc_host_supported_classes(x) \ |
533 | (((struct fc_host_attrs *)(x)->shost_data)->supported_classes) | |
534 | #define fc_host_supported_fc4s(x) \ | |
535 | (((struct fc_host_attrs *)(x)->shost_data)->supported_fc4s) | |
1da177e4 LT |
536 | #define fc_host_supported_speeds(x) \ |
537 | (((struct fc_host_attrs *)(x)->shost_data)->supported_speeds) | |
538 | #define fc_host_maxframe_size(x) \ | |
539 | (((struct fc_host_attrs *)(x)->shost_data)->maxframe_size) | |
a53eb5e0 JS |
540 | #define fc_host_max_npiv_vports(x) \ |
541 | (((struct fc_host_attrs *)(x)->shost_data)->max_npiv_vports) | |
1da177e4 LT |
542 | #define fc_host_serial_number(x) \ |
543 | (((struct fc_host_attrs *)(x)->shost_data)->serial_number) | |
544 | #define fc_host_port_id(x) \ | |
545 | (((struct fc_host_attrs *)(x)->shost_data)->port_id) | |
546 | #define fc_host_port_type(x) \ | |
547 | (((struct fc_host_attrs *)(x)->shost_data)->port_type) | |
548 | #define fc_host_port_state(x) \ | |
549 | (((struct fc_host_attrs *)(x)->shost_data)->port_state) | |
550 | #define fc_host_active_fc4s(x) \ | |
551 | (((struct fc_host_attrs *)(x)->shost_data)->active_fc4s) | |
552 | #define fc_host_speed(x) \ | |
553 | (((struct fc_host_attrs *)(x)->shost_data)->speed) | |
554 | #define fc_host_fabric_name(x) \ | |
555 | (((struct fc_host_attrs *)(x)->shost_data)->fabric_name) | |
b8d08210 JS |
556 | #define fc_host_symbolic_name(x) \ |
557 | (((struct fc_host_attrs *)(x)->shost_data)->symbolic_name) | |
558 | #define fc_host_system_hostname(x) \ | |
559 | (((struct fc_host_attrs *)(x)->shost_data)->system_hostname) | |
1da177e4 LT |
560 | #define fc_host_tgtid_bind_type(x) \ |
561 | (((struct fc_host_attrs *)(x)->shost_data)->tgtid_bind_type) | |
562 | #define fc_host_rports(x) \ | |
563 | (((struct fc_host_attrs *)(x)->shost_data)->rports) | |
564 | #define fc_host_rport_bindings(x) \ | |
565 | (((struct fc_host_attrs *)(x)->shost_data)->rport_bindings) | |
a53eb5e0 JS |
566 | #define fc_host_vports(x) \ |
567 | (((struct fc_host_attrs *)(x)->shost_data)->vports) | |
1da177e4 LT |
568 | #define fc_host_next_rport_number(x) \ |
569 | (((struct fc_host_attrs *)(x)->shost_data)->next_rport_number) | |
570 | #define fc_host_next_target_id(x) \ | |
571 | (((struct fc_host_attrs *)(x)->shost_data)->next_target_id) | |
a53eb5e0 JS |
572 | #define fc_host_next_vport_number(x) \ |
573 | (((struct fc_host_attrs *)(x)->shost_data)->next_vport_number) | |
574 | #define fc_host_npiv_vports_inuse(x) \ | |
575 | (((struct fc_host_attrs *)(x)->shost_data)->npiv_vports_inuse) | |
aedf3497 JS |
576 | #define fc_host_work_q_name(x) \ |
577 | (((struct fc_host_attrs *)(x)->shost_data)->work_q_name) | |
578 | #define fc_host_work_q(x) \ | |
579 | (((struct fc_host_attrs *)(x)->shost_data)->work_q) | |
580 | #define fc_host_devloss_work_q_name(x) \ | |
581 | (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q_name) | |
582 | #define fc_host_devloss_work_q(x) \ | |
583 | (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q) | |
43ca910a MC |
584 | #define fc_host_dev_loss_tmo(x) \ |
585 | (((struct fc_host_attrs *)(x)->shost_data)->dev_loss_tmo) | |
1da177e4 LT |
586 | |
587 | ||
9e4f5e29 JS |
588 | struct fc_bsg_buffer { |
589 | unsigned int payload_len; | |
590 | int sg_cnt; | |
591 | struct scatterlist *sg_list; | |
592 | }; | |
593 | ||
594 | /* Values for fc_bsg_job->state_flags (bitflags) */ | |
595 | #define FC_RQST_STATE_INPROGRESS 0 | |
596 | #define FC_RQST_STATE_DONE 1 | |
597 | ||
598 | struct fc_bsg_job { | |
599 | struct Scsi_Host *shost; | |
600 | struct fc_rport *rport; | |
601 | struct device *dev; | |
602 | struct request *req; | |
603 | spinlock_t job_lock; | |
604 | unsigned int state_flags; | |
605 | unsigned int ref_cnt; | |
606 | void (*job_done)(struct fc_bsg_job *); | |
607 | ||
608 | struct fc_bsg_request *request; | |
609 | struct fc_bsg_reply *reply; | |
610 | unsigned int request_len; | |
611 | unsigned int reply_len; | |
612 | /* | |
613 | * On entry : reply_len indicates the buffer size allocated for | |
614 | * the reply. | |
615 | * | |
616 | * Upon completion : the message handler must set reply_len | |
617 | * to indicates the size of the reply to be returned to the | |
618 | * caller. | |
619 | */ | |
620 | ||
621 | /* DMA payloads for the request/response */ | |
622 | struct fc_bsg_buffer request_payload; | |
623 | struct fc_bsg_buffer reply_payload; | |
624 | ||
625 | void *dd_data; /* Used for driver-specific storage */ | |
626 | }; | |
627 | ||
628 | ||
1da177e4 LT |
629 | /* The functions by which the transport class and the driver communicate */ |
630 | struct fc_function_template { | |
631 | void (*get_rport_dev_loss_tmo)(struct fc_rport *); | |
632 | void (*set_rport_dev_loss_tmo)(struct fc_rport *, u32); | |
633 | ||
634 | void (*get_starget_node_name)(struct scsi_target *); | |
635 | void (*get_starget_port_name)(struct scsi_target *); | |
636 | void (*get_starget_port_id)(struct scsi_target *); | |
637 | ||
638 | void (*get_host_port_id)(struct Scsi_Host *); | |
639 | void (*get_host_port_type)(struct Scsi_Host *); | |
640 | void (*get_host_port_state)(struct Scsi_Host *); | |
641 | void (*get_host_active_fc4s)(struct Scsi_Host *); | |
642 | void (*get_host_speed)(struct Scsi_Host *); | |
643 | void (*get_host_fabric_name)(struct Scsi_Host *); | |
016131b8 | 644 | void (*get_host_symbolic_name)(struct Scsi_Host *); |
b8d08210 | 645 | void (*set_host_system_hostname)(struct Scsi_Host *); |
1da177e4 LT |
646 | |
647 | struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *); | |
648 | void (*reset_fc_host_stats)(struct Scsi_Host *); | |
649 | ||
91ca7b01 AV |
650 | int (*issue_fc_host_lip)(struct Scsi_Host *); |
651 | ||
0f29b966 JS |
652 | void (*dev_loss_tmo_callbk)(struct fc_rport *); |
653 | void (*terminate_rport_io)(struct fc_rport *); | |
654 | ||
a53eb5e0 JS |
655 | void (*set_vport_symbolic_name)(struct fc_vport *); |
656 | int (*vport_create)(struct fc_vport *, bool); | |
657 | int (*vport_disable)(struct fc_vport *, bool); | |
658 | int (*vport_delete)(struct fc_vport *); | |
659 | ||
7525236d FT |
660 | /* target-mode drivers' functions */ |
661 | int (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int); | |
662 | int (* it_nexus_response)(struct Scsi_Host *, u64, int); | |
663 | ||
9e4f5e29 JS |
664 | /* bsg support */ |
665 | int (*bsg_request)(struct fc_bsg_job *); | |
666 | int (*bsg_timeout)(struct fc_bsg_job *); | |
667 | ||
1da177e4 LT |
668 | /* allocation lengths for host-specific data */ |
669 | u32 dd_fcrport_size; | |
a53eb5e0 | 670 | u32 dd_fcvport_size; |
9e4f5e29 | 671 | u32 dd_bsg_size; |
1da177e4 | 672 | |
9ef3e4a4 | 673 | /* |
1da177e4 LT |
674 | * The driver sets these to tell the transport class it |
675 | * wants the attributes displayed in sysfs. If the show_ flag | |
676 | * is not set, the attribute will be private to the transport | |
9ef3e4a4 | 677 | * class |
1da177e4 LT |
678 | */ |
679 | ||
680 | /* remote port fixed attributes */ | |
681 | unsigned long show_rport_maxframe_size:1; | |
682 | unsigned long show_rport_supported_classes:1; | |
683 | unsigned long show_rport_dev_loss_tmo:1; | |
684 | ||
685 | /* | |
686 | * target dynamic attributes | |
687 | * These should all be "1" if the driver uses the remote port | |
688 | * add/delete functions (so attributes reflect rport values). | |
689 | */ | |
690 | unsigned long show_starget_node_name:1; | |
691 | unsigned long show_starget_port_name:1; | |
692 | unsigned long show_starget_port_id:1; | |
693 | ||
694 | /* host fixed attributes */ | |
695 | unsigned long show_host_node_name:1; | |
696 | unsigned long show_host_port_name:1; | |
6b7281d0 | 697 | unsigned long show_host_permanent_port_name:1; |
1da177e4 LT |
698 | unsigned long show_host_supported_classes:1; |
699 | unsigned long show_host_supported_fc4s:1; | |
1da177e4 LT |
700 | unsigned long show_host_supported_speeds:1; |
701 | unsigned long show_host_maxframe_size:1; | |
702 | unsigned long show_host_serial_number:1; | |
703 | /* host dynamic attributes */ | |
704 | unsigned long show_host_port_id:1; | |
705 | unsigned long show_host_port_type:1; | |
706 | unsigned long show_host_port_state:1; | |
707 | unsigned long show_host_active_fc4s:1; | |
708 | unsigned long show_host_speed:1; | |
709 | unsigned long show_host_fabric_name:1; | |
016131b8 | 710 | unsigned long show_host_symbolic_name:1; |
b8d08210 | 711 | unsigned long show_host_system_hostname:1; |
03f002f7 CS |
712 | |
713 | unsigned long disable_target_scan:1; | |
1da177e4 LT |
714 | }; |
715 | ||
716 | ||
19a7b4ae JSEC |
717 | /** |
718 | * fc_remote_port_chkready - called to validate the remote port state | |
719 | * prior to initiating io to the port. | |
720 | * | |
721 | * Returns a scsi result code that can be returned by the LLDD. | |
722 | * | |
723 | * @rport: remote port to be checked | |
724 | **/ | |
725 | static inline int | |
726 | fc_remote_port_chkready(struct fc_rport *rport) | |
727 | { | |
728 | int result; | |
729 | ||
730 | switch (rport->port_state) { | |
731 | case FC_PORTSTATE_ONLINE: | |
a53eb5e0 | 732 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) |
aedf3497 JS |
733 | result = 0; |
734 | else if (rport->flags & FC_RPORT_DEVLOSS_PENDING) | |
9a1a69a1 | 735 | result = DID_IMM_RETRY << 16; |
aedf3497 JS |
736 | else |
737 | result = DID_NO_CONNECT << 16; | |
19a7b4ae JSEC |
738 | break; |
739 | case FC_PORTSTATE_BLOCKED: | |
fff9d40c | 740 | if (rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT) |
f46e307d | 741 | result = DID_TRANSPORT_FAILFAST << 16; |
fff9d40c | 742 | else |
9a1a69a1 | 743 | result = DID_IMM_RETRY << 16; |
19a7b4ae JSEC |
744 | break; |
745 | default: | |
746 | result = DID_NO_CONNECT << 16; | |
747 | break; | |
748 | } | |
749 | return result; | |
750 | } | |
751 | ||
b8d08210 JS |
752 | static inline u64 wwn_to_u64(u8 *wwn) |
753 | { | |
754 | return (u64)wwn[0] << 56 | (u64)wwn[1] << 48 | | |
755 | (u64)wwn[2] << 40 | (u64)wwn[3] << 32 | | |
756 | (u64)wwn[4] << 24 | (u64)wwn[5] << 16 | | |
757 | (u64)wwn[6] << 8 | (u64)wwn[7]; | |
758 | } | |
759 | ||
760 | static inline void u64_to_wwn(u64 inm, u8 *wwn) | |
761 | { | |
762 | wwn[0] = (inm >> 56) & 0xff; | |
763 | wwn[1] = (inm >> 48) & 0xff; | |
764 | wwn[2] = (inm >> 40) & 0xff; | |
765 | wwn[3] = (inm >> 32) & 0xff; | |
766 | wwn[4] = (inm >> 24) & 0xff; | |
767 | wwn[5] = (inm >> 16) & 0xff; | |
768 | wwn[6] = (inm >> 8) & 0xff; | |
769 | wwn[7] = inm & 0xff; | |
770 | } | |
19a7b4ae | 771 | |
a53eb5e0 JS |
772 | /** |
773 | * fc_vport_set_state() - called to set a vport's state. Saves the old state, | |
774 | * excepting the transitory states of initializing and sending the ELS | |
775 | * traffic to instantiate the vport on the link. | |
776 | * | |
777 | * Assumes the driver has surrounded this with the proper locking to ensure | |
778 | * a coherent state change. | |
779 | * | |
780 | * @vport: virtual port whose state is changing | |
781 | * @new_state: new state | |
782 | **/ | |
783 | static inline void | |
784 | fc_vport_set_state(struct fc_vport *vport, enum fc_vport_state new_state) | |
785 | { | |
786 | if ((new_state != FC_VPORT_UNKNOWN) && | |
787 | (new_state != FC_VPORT_INITIALIZING)) | |
788 | vport->vport_last_state = vport->vport_state; | |
789 | vport->vport_state = new_state; | |
790 | } | |
791 | ||
1da177e4 LT |
792 | struct scsi_transport_template *fc_attach_transport( |
793 | struct fc_function_template *); | |
794 | void fc_release_transport(struct scsi_transport_template *); | |
795 | void fc_remove_host(struct Scsi_Host *); | |
796 | struct fc_rport *fc_remote_port_add(struct Scsi_Host *shost, | |
797 | int channel, struct fc_rport_identifiers *ids); | |
798 | void fc_remote_port_delete(struct fc_rport *rport); | |
799 | void fc_remote_port_rolechg(struct fc_rport *rport, u32 roles); | |
1da177e4 | 800 | int scsi_is_fc_rport(const struct device *); |
84314fd4 JS |
801 | u32 fc_get_event_number(void); |
802 | void fc_host_post_event(struct Scsi_Host *shost, u32 event_number, | |
803 | enum fc_host_event_code event_code, u32 event_data); | |
804 | void fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, | |
f14e2e29 | 805 | u32 data_len, char * data_buf, u64 vendor_id); |
84314fd4 JS |
806 | /* Note: when specifying vendor_id to fc_host_post_vendor_event() |
807 | * be sure to read the Vendor Type and ID formatting requirements | |
808 | * specified in scsi_netlink.h | |
809 | */ | |
a30c3f69 AV |
810 | struct fc_vport *fc_vport_create(struct Scsi_Host *shost, int channel, |
811 | struct fc_vport_identifiers *); | |
a53eb5e0 | 812 | int fc_vport_terminate(struct fc_vport *vport); |
2f2eb587 | 813 | int fc_block_scsi_eh(struct scsi_cmnd *cmnd); |
1da177e4 LT |
814 | |
815 | #endif /* SCSI_TRANSPORT_FC_H */ |