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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> |
eb340948 | 31 | #include <linux/bsg-lib.h> |
ef3fb242 | 32 | #include <asm/unaligned.h> |
19a7b4ae | 33 | #include <scsi/scsi.h> |
84314fd4 | 34 | #include <scsi/scsi_netlink.h> |
75cc8cfc | 35 | #include <scsi/scsi_host.h> |
1da177e4 LT |
36 | |
37 | struct scsi_transport_template; | |
38 | ||
1da177e4 LT |
39 | /* |
40 | * FC Port definitions - Following FC HBAAPI guidelines | |
41 | * | |
42 | * Note: Not all binary values for the different fields match HBAAPI. | |
43 | * Instead, we use densely packed ordinal values or enums. | |
44 | * We get away with this as we never present the actual binary values | |
45 | * externally. For sysfs, we always present the string that describes | |
46 | * the value. Thus, an admin doesn't need a magic HBAAPI decoder ring | |
47 | * to understand the values. The HBAAPI user-space library is free to | |
48 | * convert the strings into the HBAAPI-specified binary values. | |
49 | * | |
50 | * Note: Not all HBAAPI-defined values are contained in the definitions | |
51 | * below. Those not appropriate to an fc_host (e.g. FCP initiator) have | |
52 | * been removed. | |
53 | */ | |
54 | ||
55 | /* | |
56 | * fc_port_type: If you alter this, you also need to alter scsi_transport_fc.c | |
57 | * (for the ascii descriptions). | |
58 | */ | |
59 | enum fc_port_type { | |
60 | FC_PORTTYPE_UNKNOWN, | |
61 | FC_PORTTYPE_OTHER, | |
62 | FC_PORTTYPE_NOTPRESENT, | |
63 | FC_PORTTYPE_NPORT, /* Attached to FPort */ | |
64 | FC_PORTTYPE_NLPORT, /* (Public) Loop w/ FLPort */ | |
65 | FC_PORTTYPE_LPORT, /* (Private) Loop w/o FLPort */ | |
66 | FC_PORTTYPE_PTP, /* Point to Point w/ another NPort */ | |
a53eb5e0 | 67 | FC_PORTTYPE_NPIV, /* VPORT based on NPIV */ |
1da177e4 LT |
68 | }; |
69 | ||
a53eb5e0 | 70 | |
1da177e4 LT |
71 | /* |
72 | * fc_port_state: If you alter this, you also need to alter scsi_transport_fc.c | |
73 | * (for the ascii descriptions). | |
74 | */ | |
75 | enum fc_port_state { | |
76 | FC_PORTSTATE_UNKNOWN, | |
77 | FC_PORTSTATE_NOTPRESENT, | |
78 | FC_PORTSTATE_ONLINE, | |
79 | FC_PORTSTATE_OFFLINE, /* User has taken Port Offline */ | |
80 | FC_PORTSTATE_BLOCKED, | |
81 | FC_PORTSTATE_BYPASSED, | |
82 | FC_PORTSTATE_DIAGNOSTICS, | |
83 | FC_PORTSTATE_LINKDOWN, | |
84 | FC_PORTSTATE_ERROR, | |
85 | FC_PORTSTATE_LOOPBACK, | |
42e33148 | 86 | FC_PORTSTATE_DELETED, |
1da177e4 LT |
87 | }; |
88 | ||
89 | ||
a53eb5e0 JS |
90 | /* |
91 | * fc_vport_state: If you alter this, you also need to alter | |
92 | * scsi_transport_fc.c (for the ascii descriptions). | |
93 | */ | |
94 | enum fc_vport_state { | |
95 | FC_VPORT_UNKNOWN, | |
96 | FC_VPORT_ACTIVE, | |
97 | FC_VPORT_DISABLED, | |
98 | FC_VPORT_LINKDOWN, | |
99 | FC_VPORT_INITIALIZING, | |
100 | FC_VPORT_NO_FABRIC_SUPP, | |
101 | FC_VPORT_NO_FABRIC_RSCS, | |
102 | FC_VPORT_FABRIC_LOGOUT, | |
103 | FC_VPORT_FABRIC_REJ_WWN, | |
104 | FC_VPORT_FAILED, | |
105 | }; | |
106 | ||
107 | ||
108 | ||
9ef3e4a4 | 109 | /* |
1da177e4 LT |
110 | * FC Classes of Service |
111 | * Note: values are not enumerated, as they can be "or'd" together | |
112 | * for reporting (e.g. report supported_classes). If you alter this list, | |
113 | * you also need to alter scsi_transport_fc.c (for the ascii descriptions). | |
114 | */ | |
115 | #define FC_COS_UNSPECIFIED 0 | |
116 | #define FC_COS_CLASS1 2 | |
117 | #define FC_COS_CLASS2 4 | |
118 | #define FC_COS_CLASS3 8 | |
119 | #define FC_COS_CLASS4 0x10 | |
120 | #define FC_COS_CLASS6 0x40 | |
121 | ||
9ef3e4a4 | 122 | /* |
1da177e4 LT |
123 | * FC Port Speeds |
124 | * Note: values are not enumerated, as they can be "or'd" together | |
125 | * for reporting (e.g. report supported_speeds). If you alter this list, | |
126 | * you also need to alter scsi_transport_fc.c (for the ascii descriptions). | |
127 | */ | |
128 | #define FC_PORTSPEED_UNKNOWN 0 /* Unknown - transceiver | |
129 | incapable of reporting */ | |
130 | #define FC_PORTSPEED_1GBIT 1 | |
131 | #define FC_PORTSPEED_2GBIT 2 | |
a9277e77 NP |
132 | #define FC_PORTSPEED_10GBIT 4 |
133 | #define FC_PORTSPEED_4GBIT 8 | |
c3d2350a JS |
134 | #define FC_PORTSPEED_8GBIT 0x10 |
135 | #define FC_PORTSPEED_16GBIT 0x20 | |
624f28be | 136 | #define FC_PORTSPEED_32GBIT 0x40 |
c21a2c1a DK |
137 | #define FC_PORTSPEED_20GBIT 0x80 |
138 | #define FC_PORTSPEED_40GBIT 0x100 | |
139 | #define FC_PORTSPEED_50GBIT 0x200 | |
140 | #define FC_PORTSPEED_100GBIT 0x400 | |
c749e6bc | 141 | #define FC_PORTSPEED_25GBIT 0x800 |
1da177e4 LT |
142 | #define FC_PORTSPEED_NOT_NEGOTIATED (1 << 15) /* Speed not established */ |
143 | ||
144 | /* | |
145 | * fc_tgtid_binding_type: If you alter this, you also need to alter | |
146 | * scsi_transport_fc.c (for the ascii descriptions). | |
147 | */ | |
148 | enum fc_tgtid_binding_type { | |
149 | FC_TGTID_BIND_NONE, | |
150 | FC_TGTID_BIND_BY_WWPN, | |
151 | FC_TGTID_BIND_BY_WWNN, | |
152 | FC_TGTID_BIND_BY_ID, | |
153 | }; | |
154 | ||
155 | /* | |
a53eb5e0 | 156 | * FC Port Roles |
1da177e4 LT |
157 | * Note: values are not enumerated, as they can be "or'd" together |
158 | * for reporting (e.g. report roles). If you alter this list, | |
159 | * you also need to alter scsi_transport_fc.c (for the ascii descriptions). | |
160 | */ | |
a53eb5e0 JS |
161 | #define FC_PORT_ROLE_UNKNOWN 0x00 |
162 | #define FC_PORT_ROLE_FCP_TARGET 0x01 | |
163 | #define FC_PORT_ROLE_FCP_INITIATOR 0x02 | |
164 | #define FC_PORT_ROLE_IP_PORT 0x04 | |
165 | ||
166 | /* The following are for compatibility */ | |
167 | #define FC_RPORT_ROLE_UNKNOWN FC_PORT_ROLE_UNKNOWN | |
168 | #define FC_RPORT_ROLE_FCP_TARGET FC_PORT_ROLE_FCP_TARGET | |
169 | #define FC_RPORT_ROLE_FCP_INITIATOR FC_PORT_ROLE_FCP_INITIATOR | |
170 | #define FC_RPORT_ROLE_IP_PORT FC_PORT_ROLE_IP_PORT | |
171 | ||
172 | ||
173 | /* Macro for use in defining Virtual Port attributes */ | |
ee959b00 TJ |
174 | #define FC_VPORT_ATTR(_name,_mode,_show,_store) \ |
175 | struct device_attribute dev_attr_vport_##_name = \ | |
a53eb5e0 | 176 | __ATTR(_name,_mode,_show,_store) |
1da177e4 | 177 | |
a30c3f69 AV |
178 | /* |
179 | * fc_vport_identifiers: This set of data contains all elements | |
180 | * to uniquely identify and instantiate a FC virtual port. | |
181 | * | |
182 | * Notes: | |
183 | * symbolic_name: The driver is to append the symbolic_name string data | |
184 | * to the symbolic_node_name data that it generates by default. | |
185 | * the resulting combination should then be registered with the switch. | |
186 | * It is expected that things like Xen may stuff a VM title into | |
187 | * this field. | |
188 | */ | |
189 | #define FC_VPORT_SYMBOLIC_NAMELEN 64 | |
190 | struct fc_vport_identifiers { | |
191 | u64 node_name; | |
192 | u64 port_name; | |
193 | u32 roles; | |
194 | bool disable; | |
195 | enum fc_port_type vport_type; /* only FC_PORTTYPE_NPIV allowed */ | |
196 | char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN]; | |
197 | }; | |
1da177e4 | 198 | |
a53eb5e0 JS |
199 | /* |
200 | * FC Virtual Port Attributes | |
201 | * | |
202 | * This structure exists for each FC port is a virtual FC port. Virtual | |
203 | * ports share the physical link with the Physical port. Each virtual | |
25985edc | 204 | * ports has a unique presence on the SAN, and may be instantiated via |
a53eb5e0 | 205 | * NPIV, Virtual Fabrics, or via additional ALPAs. As the vport is a |
25985edc | 206 | * unique presence, each vport has it's own view of the fabric, |
1e4478c3 | 207 | * authentication privilege, and priorities. |
a53eb5e0 JS |
208 | * |
209 | * A virtual port may support 1 or more FC4 roles. Typically it is a | |
210 | * FCP Initiator. It could be a FCP Target, or exist sole for an IP over FC | |
211 | * roles. FC port attributes for the vport will be reported on any | |
212 | * fc_host class object allocated for an FCP Initiator. | |
213 | * | |
214 | * -- | |
215 | * | |
216 | * Fixed attributes are not expected to change. The driver is | |
217 | * expected to set these values after receiving the fc_vport structure | |
218 | * via the vport_create() call from the transport. | |
219 | * The transport fully manages all get functions w/o driver interaction. | |
220 | * | |
221 | * Dynamic attributes are expected to change. The driver participates | |
222 | * in all get/set operations via functions provided by the driver. | |
223 | * | |
224 | * Private attributes are transport-managed values. They are fully | |
225 | * managed by the transport w/o driver interaction. | |
226 | */ | |
227 | ||
a53eb5e0 JS |
228 | struct fc_vport { |
229 | /* Fixed Attributes */ | |
230 | ||
231 | /* Dynamic Attributes */ | |
232 | ||
233 | /* Private (Transport-managed) Attributes */ | |
234 | enum fc_vport_state vport_state; | |
235 | enum fc_vport_state vport_last_state; | |
236 | u64 node_name; | |
237 | u64 port_name; | |
238 | u32 roles; | |
239 | u32 vport_id; /* Admin Identifier for the vport */ | |
240 | enum fc_port_type vport_type; | |
241 | char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN]; | |
242 | ||
243 | /* exported data */ | |
244 | void *dd_data; /* Used for driver-specific storage */ | |
245 | ||
246 | /* internal data */ | |
247 | struct Scsi_Host *shost; /* Physical Port Parent */ | |
248 | unsigned int channel; | |
249 | u32 number; | |
250 | u8 flags; | |
251 | struct list_head peers; | |
252 | struct device dev; | |
9ef3e4a4 | 253 | struct work_struct vport_delete_work; |
a53eb5e0 JS |
254 | } __attribute__((aligned(sizeof(unsigned long)))); |
255 | ||
256 | /* bit field values for struct fc_vport "flags" field: */ | |
257 | #define FC_VPORT_CREATING 0x01 | |
258 | #define FC_VPORT_DELETING 0x02 | |
259 | #define FC_VPORT_DELETED 0x04 | |
260 | #define FC_VPORT_DEL 0x06 /* Any DELETE state */ | |
261 | ||
262 | #define dev_to_vport(d) \ | |
263 | container_of(d, struct fc_vport, dev) | |
ee959b00 TJ |
264 | #define transport_class_to_vport(dev) \ |
265 | dev_to_vport(dev->parent) | |
a53eb5e0 JS |
266 | #define vport_to_shost(v) \ |
267 | (v->shost) | |
268 | #define vport_to_shost_channel(v) \ | |
269 | (v->channel) | |
270 | #define vport_to_parent(v) \ | |
271 | (v->dev.parent) | |
272 | ||
273 | ||
274 | /* Error return codes for vport_create() callback */ | |
275 | #define VPCERR_UNSUPPORTED -ENOSYS /* no driver/adapter | |
276 | support */ | |
277 | #define VPCERR_BAD_WWN -ENOTUNIQ /* driver validation | |
278 | of WWNs failed */ | |
279 | #define VPCERR_NO_FABRIC_SUPP -EOPNOTSUPP /* Fabric connection | |
280 | is loop or the | |
281 | Fabric Port does | |
282 | not support NPIV */ | |
283 | ||
1da177e4 LT |
284 | /* |
285 | * fc_rport_identifiers: This set of data contains all elements | |
286 | * to uniquely identify a remote FC port. The driver uses this data | |
287 | * to report the existence of a remote FC port in the topology. Internally, | |
288 | * the transport uses this data for attributes and to manage consistent | |
289 | * target id bindings. | |
290 | */ | |
291 | struct fc_rport_identifiers { | |
292 | u64 node_name; | |
293 | u64 port_name; | |
294 | u32 port_id; | |
295 | u32 roles; | |
296 | }; | |
297 | ||
a53eb5e0 | 298 | |
1da177e4 LT |
299 | /* Macro for use in defining Remote Port attributes */ |
300 | #define FC_RPORT_ATTR(_name,_mode,_show,_store) \ | |
ee959b00 | 301 | struct device_attribute dev_attr_rport_##_name = \ |
1da177e4 LT |
302 | __ATTR(_name,_mode,_show,_store) |
303 | ||
304 | ||
305 | /* | |
306 | * FC Remote Port Attributes | |
307 | * | |
308 | * This structure exists for each remote FC port that a LLDD notifies | |
309 | * the subsystem of. A remote FC port may or may not be a SCSI Target, | |
310 | * also be a SCSI initiator, IP endpoint, etc. As such, the remote | |
311 | * port is considered a separate entity, independent of "role" (such | |
312 | * as scsi target). | |
313 | * | |
314 | * -- | |
315 | * | |
316 | * Attributes are based on HBAAPI V2.0 definitions. Only those | |
317 | * attributes that are determinable by the local port (aka Host) | |
318 | * are contained. | |
319 | * | |
320 | * Fixed attributes are not expected to change. The driver is | |
321 | * expected to set these values after successfully calling | |
322 | * fc_remote_port_add(). The transport fully manages all get functions | |
323 | * w/o driver interaction. | |
324 | * | |
325 | * Dynamic attributes are expected to change. The driver participates | |
326 | * in all get/set operations via functions provided by the driver. | |
327 | * | |
328 | * Private attributes are transport-managed values. They are fully | |
329 | * managed by the transport w/o driver interaction. | |
330 | */ | |
331 | ||
332 | struct fc_rport { /* aka fc_starget_attrs */ | |
333 | /* Fixed Attributes */ | |
334 | u32 maxframe_size; | |
335 | u32 supported_classes; | |
336 | ||
337 | /* Dynamic Attributes */ | |
338 | u32 dev_loss_tmo; /* Remote Port loss timeout in seconds. */ | |
339 | ||
340 | /* Private (Transport-managed) Attributes */ | |
341 | u64 node_name; | |
342 | u64 port_name; | |
343 | u32 port_id; | |
344 | u32 roles; | |
345 | enum fc_port_state port_state; /* Will only be ONLINE or UNKNOWN */ | |
346 | u32 scsi_target_id; | |
0f29b966 | 347 | u32 fast_io_fail_tmo; |
1da177e4 LT |
348 | |
349 | /* exported data */ | |
350 | void *dd_data; /* Used for driver-specific storage */ | |
351 | ||
352 | /* internal data */ | |
353 | unsigned int channel; | |
354 | u32 number; | |
aedf3497 | 355 | u8 flags; |
1da177e4 LT |
356 | struct list_head peers; |
357 | struct device dev; | |
c4028958 | 358 | struct delayed_work dev_loss_work; |
1da177e4 | 359 | struct work_struct scan_work; |
c4028958 | 360 | struct delayed_work fail_io_work; |
aedf3497 JS |
361 | struct work_struct stgt_delete_work; |
362 | struct work_struct rport_delete_work; | |
9e4f5e29 | 363 | struct request_queue *rqst_q; /* bsg support */ |
1da177e4 LT |
364 | } __attribute__((aligned(sizeof(unsigned long)))); |
365 | ||
aedf3497 JS |
366 | /* bit field values for struct fc_rport "flags" field: */ |
367 | #define FC_RPORT_DEVLOSS_PENDING 0x01 | |
368 | #define FC_RPORT_SCAN_PENDING 0x02 | |
21098c68 | 369 | #define FC_RPORT_FAST_FAIL_TIMEDOUT 0x04 |
4be98c0c | 370 | #define FC_RPORT_DEVLOSS_CALLBK_DONE 0x08 |
aedf3497 | 371 | |
1da177e4 LT |
372 | #define dev_to_rport(d) \ |
373 | container_of(d, struct fc_rport, dev) | |
ee959b00 TJ |
374 | #define transport_class_to_rport(dev) \ |
375 | dev_to_rport(dev->parent) | |
1da177e4 LT |
376 | #define rport_to_shost(r) \ |
377 | dev_to_shost(r->dev.parent) | |
378 | ||
379 | /* | |
380 | * FC SCSI Target Attributes | |
381 | * | |
25985edc | 382 | * The SCSI Target is considered an extension of a remote port (as |
1da177e4 LT |
383 | * a remote port can be more than a SCSI Target). Within the scsi |
384 | * subsystem, we leave the Target as a separate entity. Doing so | |
385 | * provides backward compatibility with prior FC transport api's, | |
386 | * and lets remote ports be handled entirely within the FC transport | |
387 | * and independently from the scsi subsystem. The drawback is that | |
388 | * some data will be duplicated. | |
389 | */ | |
390 | ||
391 | struct fc_starget_attrs { /* aka fc_target_attrs */ | |
392 | /* Dynamic Attributes */ | |
393 | u64 node_name; | |
394 | u64 port_name; | |
395 | u32 port_id; | |
396 | }; | |
397 | ||
398 | #define fc_starget_node_name(x) \ | |
399 | (((struct fc_starget_attrs *)&(x)->starget_data)->node_name) | |
400 | #define fc_starget_port_name(x) \ | |
401 | (((struct fc_starget_attrs *)&(x)->starget_data)->port_name) | |
402 | #define fc_starget_port_id(x) \ | |
403 | (((struct fc_starget_attrs *)&(x)->starget_data)->port_id) | |
404 | ||
405 | #define starget_to_rport(s) \ | |
406 | scsi_is_fc_rport(s->dev.parent) ? dev_to_rport(s->dev.parent) : NULL | |
407 | ||
408 | ||
409 | /* | |
410 | * FC Local Port (Host) Statistics | |
411 | */ | |
412 | ||
413 | /* FC Statistics - Following FC HBAAPI v2.0 guidelines */ | |
414 | struct fc_host_statistics { | |
415 | /* port statistics */ | |
416 | u64 seconds_since_last_reset; | |
417 | u64 tx_frames; | |
418 | u64 tx_words; | |
419 | u64 rx_frames; | |
420 | u64 rx_words; | |
421 | u64 lip_count; | |
422 | u64 nos_count; | |
423 | u64 error_frames; | |
424 | u64 dumped_frames; | |
425 | u64 link_failure_count; | |
426 | u64 loss_of_sync_count; | |
427 | u64 loss_of_signal_count; | |
428 | u64 prim_seq_protocol_err_count; | |
429 | u64 invalid_tx_word_count; | |
430 | u64 invalid_crc_count; | |
9ef3e4a4 | 431 | |
1da177e4 LT |
432 | /* fc4 statistics (only FCP supported currently) */ |
433 | u64 fcp_input_requests; | |
434 | u64 fcp_output_requests; | |
435 | u64 fcp_control_requests; | |
436 | u64 fcp_input_megabytes; | |
437 | u64 fcp_output_megabytes; | |
e58abb0c VD |
438 | u64 fcp_packet_alloc_failures; /* fcp packet allocation failures */ |
439 | u64 fcp_packet_aborts; /* fcp packet aborted */ | |
440 | u64 fcp_frame_alloc_failures; /* fcp frame allocation failures */ | |
441 | ||
442 | /* fc exches statistics */ | |
443 | u64 fc_no_free_exch; /* no free exch memory */ | |
444 | u64 fc_no_free_exch_xid; /* no free exch id */ | |
445 | u64 fc_xid_not_found; /* exch not found for a response */ | |
446 | u64 fc_xid_busy; /* exch exist for new a request */ | |
447 | u64 fc_seq_not_found; /* seq is not found for exchange */ | |
448 | u64 fc_non_bls_resp; /* a non BLS response frame with | |
449 | a sequence responder in new exch */ | |
1da177e4 LT |
450 | }; |
451 | ||
452 | ||
84314fd4 JS |
453 | /* |
454 | * FC Event Codes - Polled and Async, following FC HBAAPI v2.0 guidelines | |
455 | */ | |
456 | ||
457 | /* | |
458 | * fc_host_event_code: If you alter this, you also need to alter | |
459 | * scsi_transport_fc.c (for the ascii descriptions). | |
460 | */ | |
461 | enum fc_host_event_code { | |
462 | FCH_EVT_LIP = 0x1, | |
463 | FCH_EVT_LINKUP = 0x2, | |
464 | FCH_EVT_LINKDOWN = 0x3, | |
465 | FCH_EVT_LIPRESET = 0x4, | |
466 | FCH_EVT_RSCN = 0x5, | |
467 | FCH_EVT_ADAPTER_CHANGE = 0x103, | |
468 | FCH_EVT_PORT_UNKNOWN = 0x200, | |
469 | FCH_EVT_PORT_OFFLINE = 0x201, | |
470 | FCH_EVT_PORT_ONLINE = 0x202, | |
471 | FCH_EVT_PORT_FABRIC = 0x204, | |
472 | FCH_EVT_LINK_UNKNOWN = 0x500, | |
473 | FCH_EVT_VENDOR_UNIQUE = 0xffff, | |
474 | }; | |
475 | ||
476 | ||
1da177e4 LT |
477 | /* |
478 | * FC Local Port (Host) Attributes | |
479 | * | |
480 | * Attributes are based on HBAAPI V2.0 definitions. | |
481 | * Note: OSDeviceName is determined by user-space library | |
482 | * | |
483 | * Fixed attributes are not expected to change. The driver is | |
484 | * expected to set these values after successfully calling scsi_add_host(). | |
485 | * The transport fully manages all get functions w/o driver interaction. | |
486 | * | |
487 | * Dynamic attributes are expected to change. The driver participates | |
488 | * in all get/set operations via functions provided by the driver. | |
489 | * | |
490 | * Private attributes are transport-managed values. They are fully | |
491 | * managed by the transport w/o driver interaction. | |
492 | */ | |
493 | ||
494 | #define FC_FC4_LIST_SIZE 32 | |
495 | #define FC_SYMBOLIC_NAME_SIZE 256 | |
496 | #define FC_VERSION_STRING_SIZE 64 | |
497 | #define FC_SERIAL_NUMBER_SIZE 80 | |
498 | ||
499 | struct fc_host_attrs { | |
500 | /* Fixed Attributes */ | |
501 | u64 node_name; | |
502 | u64 port_name; | |
6b7281d0 | 503 | u64 permanent_port_name; |
1da177e4 LT |
504 | u32 supported_classes; |
505 | u8 supported_fc4s[FC_FC4_LIST_SIZE]; | |
1da177e4 LT |
506 | u32 supported_speeds; |
507 | u32 maxframe_size; | |
a53eb5e0 | 508 | u16 max_npiv_vports; |
1da177e4 | 509 | char serial_number[FC_SERIAL_NUMBER_SIZE]; |
bb8ef587 NP |
510 | char manufacturer[FC_SERIAL_NUMBER_SIZE]; |
511 | char model[FC_SYMBOLIC_NAME_SIZE]; | |
512 | char model_description[FC_SYMBOLIC_NAME_SIZE]; | |
513 | char hardware_version[FC_VERSION_STRING_SIZE]; | |
514 | char driver_version[FC_VERSION_STRING_SIZE]; | |
515 | char firmware_version[FC_VERSION_STRING_SIZE]; | |
516 | char optionrom_version[FC_VERSION_STRING_SIZE]; | |
1da177e4 LT |
517 | |
518 | /* Dynamic Attributes */ | |
519 | u32 port_id; | |
520 | enum fc_port_type port_type; | |
521 | enum fc_port_state port_state; | |
522 | u8 active_fc4s[FC_FC4_LIST_SIZE]; | |
523 | u32 speed; | |
524 | u64 fabric_name; | |
b8d08210 JS |
525 | char symbolic_name[FC_SYMBOLIC_NAME_SIZE]; |
526 | char system_hostname[FC_SYMBOLIC_NAME_SIZE]; | |
43ca910a | 527 | u32 dev_loss_tmo; |
1da177e4 LT |
528 | |
529 | /* Private (Transport-managed) Attributes */ | |
530 | enum fc_tgtid_binding_type tgtid_bind_type; | |
531 | ||
532 | /* internal data */ | |
533 | struct list_head rports; | |
534 | struct list_head rport_bindings; | |
a53eb5e0 | 535 | struct list_head vports; |
1da177e4 LT |
536 | u32 next_rport_number; |
537 | u32 next_target_id; | |
a53eb5e0 JS |
538 | u32 next_vport_number; |
539 | u16 npiv_vports_inuse; | |
1da177e4 | 540 | |
aedf3497 | 541 | /* work queues for rport state manipulation */ |
aab0de24 | 542 | char work_q_name[20]; |
aedf3497 | 543 | struct workqueue_struct *work_q; |
aab0de24 | 544 | char devloss_work_q_name[20]; |
aedf3497 | 545 | struct workqueue_struct *devloss_work_q; |
9e4f5e29 JS |
546 | |
547 | /* bsg support */ | |
548 | struct request_queue *rqst_q; | |
aedf3497 | 549 | }; |
42e33148 | 550 | |
aedf3497 JS |
551 | #define shost_to_fc_host(x) \ |
552 | ((struct fc_host_attrs *)(x)->shost_data) | |
42e33148 | 553 | |
1da177e4 LT |
554 | #define fc_host_node_name(x) \ |
555 | (((struct fc_host_attrs *)(x)->shost_data)->node_name) | |
556 | #define fc_host_port_name(x) \ | |
557 | (((struct fc_host_attrs *)(x)->shost_data)->port_name) | |
6b7281d0 AH |
558 | #define fc_host_permanent_port_name(x) \ |
559 | (((struct fc_host_attrs *)(x)->shost_data)->permanent_port_name) | |
1da177e4 LT |
560 | #define fc_host_supported_classes(x) \ |
561 | (((struct fc_host_attrs *)(x)->shost_data)->supported_classes) | |
562 | #define fc_host_supported_fc4s(x) \ | |
563 | (((struct fc_host_attrs *)(x)->shost_data)->supported_fc4s) | |
1da177e4 LT |
564 | #define fc_host_supported_speeds(x) \ |
565 | (((struct fc_host_attrs *)(x)->shost_data)->supported_speeds) | |
566 | #define fc_host_maxframe_size(x) \ | |
567 | (((struct fc_host_attrs *)(x)->shost_data)->maxframe_size) | |
a53eb5e0 JS |
568 | #define fc_host_max_npiv_vports(x) \ |
569 | (((struct fc_host_attrs *)(x)->shost_data)->max_npiv_vports) | |
1da177e4 LT |
570 | #define fc_host_serial_number(x) \ |
571 | (((struct fc_host_attrs *)(x)->shost_data)->serial_number) | |
bb8ef587 NP |
572 | #define fc_host_manufacturer(x) \ |
573 | (((struct fc_host_attrs *)(x)->shost_data)->manufacturer) | |
574 | #define fc_host_model(x) \ | |
575 | (((struct fc_host_attrs *)(x)->shost_data)->model) | |
576 | #define fc_host_model_description(x) \ | |
577 | (((struct fc_host_attrs *)(x)->shost_data)->model_description) | |
578 | #define fc_host_hardware_version(x) \ | |
579 | (((struct fc_host_attrs *)(x)->shost_data)->hardware_version) | |
580 | #define fc_host_driver_version(x) \ | |
581 | (((struct fc_host_attrs *)(x)->shost_data)->driver_version) | |
582 | #define fc_host_firmware_version(x) \ | |
583 | (((struct fc_host_attrs *)(x)->shost_data)->firmware_version) | |
584 | #define fc_host_optionrom_version(x) \ | |
585 | (((struct fc_host_attrs *)(x)->shost_data)->optionrom_version) | |
1da177e4 LT |
586 | #define fc_host_port_id(x) \ |
587 | (((struct fc_host_attrs *)(x)->shost_data)->port_id) | |
588 | #define fc_host_port_type(x) \ | |
589 | (((struct fc_host_attrs *)(x)->shost_data)->port_type) | |
590 | #define fc_host_port_state(x) \ | |
591 | (((struct fc_host_attrs *)(x)->shost_data)->port_state) | |
592 | #define fc_host_active_fc4s(x) \ | |
593 | (((struct fc_host_attrs *)(x)->shost_data)->active_fc4s) | |
594 | #define fc_host_speed(x) \ | |
595 | (((struct fc_host_attrs *)(x)->shost_data)->speed) | |
596 | #define fc_host_fabric_name(x) \ | |
597 | (((struct fc_host_attrs *)(x)->shost_data)->fabric_name) | |
b8d08210 JS |
598 | #define fc_host_symbolic_name(x) \ |
599 | (((struct fc_host_attrs *)(x)->shost_data)->symbolic_name) | |
600 | #define fc_host_system_hostname(x) \ | |
601 | (((struct fc_host_attrs *)(x)->shost_data)->system_hostname) | |
1da177e4 LT |
602 | #define fc_host_tgtid_bind_type(x) \ |
603 | (((struct fc_host_attrs *)(x)->shost_data)->tgtid_bind_type) | |
604 | #define fc_host_rports(x) \ | |
605 | (((struct fc_host_attrs *)(x)->shost_data)->rports) | |
606 | #define fc_host_rport_bindings(x) \ | |
607 | (((struct fc_host_attrs *)(x)->shost_data)->rport_bindings) | |
a53eb5e0 JS |
608 | #define fc_host_vports(x) \ |
609 | (((struct fc_host_attrs *)(x)->shost_data)->vports) | |
1da177e4 LT |
610 | #define fc_host_next_rport_number(x) \ |
611 | (((struct fc_host_attrs *)(x)->shost_data)->next_rport_number) | |
612 | #define fc_host_next_target_id(x) \ | |
613 | (((struct fc_host_attrs *)(x)->shost_data)->next_target_id) | |
a53eb5e0 JS |
614 | #define fc_host_next_vport_number(x) \ |
615 | (((struct fc_host_attrs *)(x)->shost_data)->next_vport_number) | |
616 | #define fc_host_npiv_vports_inuse(x) \ | |
617 | (((struct fc_host_attrs *)(x)->shost_data)->npiv_vports_inuse) | |
aedf3497 JS |
618 | #define fc_host_work_q_name(x) \ |
619 | (((struct fc_host_attrs *)(x)->shost_data)->work_q_name) | |
620 | #define fc_host_work_q(x) \ | |
621 | (((struct fc_host_attrs *)(x)->shost_data)->work_q) | |
622 | #define fc_host_devloss_work_q_name(x) \ | |
623 | (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q_name) | |
624 | #define fc_host_devloss_work_q(x) \ | |
625 | (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q) | |
43ca910a MC |
626 | #define fc_host_dev_loss_tmo(x) \ |
627 | (((struct fc_host_attrs *)(x)->shost_data)->dev_loss_tmo) | |
1da177e4 | 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 | 664 | /* bsg support */ |
75cc8cfc JT |
665 | int (*bsg_request)(struct bsg_job *); |
666 | int (*bsg_timeout)(struct bsg_job *); | |
9e4f5e29 | 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; | |
bb8ef587 NP |
703 | unsigned long show_host_manufacturer:1; |
704 | unsigned long show_host_model:1; | |
705 | unsigned long show_host_model_description:1; | |
706 | unsigned long show_host_hardware_version:1; | |
707 | unsigned long show_host_driver_version:1; | |
708 | unsigned long show_host_firmware_version:1; | |
709 | unsigned long show_host_optionrom_version:1; | |
1da177e4 LT |
710 | /* host dynamic attributes */ |
711 | unsigned long show_host_port_id:1; | |
712 | unsigned long show_host_port_type:1; | |
713 | unsigned long show_host_port_state:1; | |
714 | unsigned long show_host_active_fc4s:1; | |
715 | unsigned long show_host_speed:1; | |
716 | unsigned long show_host_fabric_name:1; | |
016131b8 | 717 | unsigned long show_host_symbolic_name:1; |
b8d08210 | 718 | unsigned long show_host_system_hostname:1; |
03f002f7 CS |
719 | |
720 | unsigned long disable_target_scan:1; | |
1da177e4 LT |
721 | }; |
722 | ||
723 | ||
19a7b4ae JSEC |
724 | /** |
725 | * fc_remote_port_chkready - called to validate the remote port state | |
726 | * prior to initiating io to the port. | |
727 | * | |
728 | * Returns a scsi result code that can be returned by the LLDD. | |
729 | * | |
730 | * @rport: remote port to be checked | |
731 | **/ | |
732 | static inline int | |
733 | fc_remote_port_chkready(struct fc_rport *rport) | |
734 | { | |
735 | int result; | |
736 | ||
737 | switch (rport->port_state) { | |
738 | case FC_PORTSTATE_ONLINE: | |
a53eb5e0 | 739 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) |
aedf3497 JS |
740 | result = 0; |
741 | else if (rport->flags & FC_RPORT_DEVLOSS_PENDING) | |
9a1a69a1 | 742 | result = DID_IMM_RETRY << 16; |
aedf3497 JS |
743 | else |
744 | result = DID_NO_CONNECT << 16; | |
19a7b4ae JSEC |
745 | break; |
746 | case FC_PORTSTATE_BLOCKED: | |
fff9d40c | 747 | if (rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT) |
f46e307d | 748 | result = DID_TRANSPORT_FAILFAST << 16; |
fff9d40c | 749 | else |
9a1a69a1 | 750 | result = DID_IMM_RETRY << 16; |
19a7b4ae JSEC |
751 | break; |
752 | default: | |
753 | result = DID_NO_CONNECT << 16; | |
754 | break; | |
755 | } | |
756 | return result; | |
757 | } | |
758 | ||
b8d08210 JS |
759 | static inline u64 wwn_to_u64(u8 *wwn) |
760 | { | |
ef3fb242 | 761 | return get_unaligned_be64(wwn); |
b8d08210 JS |
762 | } |
763 | ||
764 | static inline void u64_to_wwn(u64 inm, u8 *wwn) | |
765 | { | |
ef3fb242 | 766 | put_unaligned_be64(inm, wwn); |
b8d08210 | 767 | } |
19a7b4ae | 768 | |
a53eb5e0 JS |
769 | /** |
770 | * fc_vport_set_state() - called to set a vport's state. Saves the old state, | |
771 | * excepting the transitory states of initializing and sending the ELS | |
772 | * traffic to instantiate the vport on the link. | |
773 | * | |
774 | * Assumes the driver has surrounded this with the proper locking to ensure | |
775 | * a coherent state change. | |
776 | * | |
777 | * @vport: virtual port whose state is changing | |
778 | * @new_state: new state | |
779 | **/ | |
780 | static inline void | |
781 | fc_vport_set_state(struct fc_vport *vport, enum fc_vport_state new_state) | |
782 | { | |
783 | if ((new_state != FC_VPORT_UNKNOWN) && | |
784 | (new_state != FC_VPORT_INITIALIZING)) | |
785 | vport->vport_last_state = vport->vport_state; | |
786 | vport->vport_state = new_state; | |
787 | } | |
788 | ||
1da177e4 LT |
789 | struct scsi_transport_template *fc_attach_transport( |
790 | struct fc_function_template *); | |
791 | void fc_release_transport(struct scsi_transport_template *); | |
792 | void fc_remove_host(struct Scsi_Host *); | |
793 | struct fc_rport *fc_remote_port_add(struct Scsi_Host *shost, | |
794 | int channel, struct fc_rport_identifiers *ids); | |
795 | void fc_remote_port_delete(struct fc_rport *rport); | |
796 | void fc_remote_port_rolechg(struct fc_rport *rport, u32 roles); | |
1da177e4 | 797 | int scsi_is_fc_rport(const struct device *); |
84314fd4 JS |
798 | u32 fc_get_event_number(void); |
799 | void fc_host_post_event(struct Scsi_Host *shost, u32 event_number, | |
800 | enum fc_host_event_code event_code, u32 event_data); | |
801 | void fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, | |
f14e2e29 | 802 | u32 data_len, char * data_buf, u64 vendor_id); |
84314fd4 JS |
803 | /* Note: when specifying vendor_id to fc_host_post_vendor_event() |
804 | * be sure to read the Vendor Type and ID formatting requirements | |
805 | * specified in scsi_netlink.h | |
806 | */ | |
a30c3f69 AV |
807 | struct fc_vport *fc_vport_create(struct Scsi_Host *shost, int channel, |
808 | struct fc_vport_identifiers *); | |
a53eb5e0 | 809 | int fc_vport_terminate(struct fc_vport *vport); |
2f2eb587 | 810 | int fc_block_scsi_eh(struct scsi_cmnd *cmnd); |
1da177e4 | 811 | |
75cc8cfc JT |
812 | static inline struct Scsi_Host *fc_bsg_to_shost(struct bsg_job *job) |
813 | { | |
814 | if (scsi_is_host_device(job->dev)) | |
815 | return dev_to_shost(job->dev); | |
816 | return rport_to_shost(dev_to_rport(job->dev)); | |
817 | } | |
818 | ||
819 | static inline struct fc_rport *fc_bsg_to_rport(struct bsg_job *job) | |
820 | { | |
821 | if (scsi_is_fc_rport(job->dev)) | |
822 | return dev_to_rport(job->dev); | |
823 | return NULL; | |
824 | } | |
825 | ||
1da177e4 | 826 | #endif /* SCSI_TRANSPORT_FC_H */ |