1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * ibmvfc.h -- driver for IBM Power Virtual Fibre Channel Adapter |
4 | * |
5 | * Written By: Brian King <brking@linux.vnet.ibm.com>, IBM Corporation |
6 | * |
7 | * Copyright (C) IBM Corporation, 2008 |
8 | */ |
9 | |
10 | #ifndef _IBMVFC_H |
11 | #define _IBMVFC_H |
12 | |
13 | #include <linux/list.h> |
14 | #include <linux/types.h> |
15 | #include <scsi/viosrp.h> |
16 | |
17 | #define IBMVFC_NAME "ibmvfc" |
18 | #define IBMVFC_DRIVER_VERSION "1.0.11" |
19 | #define IBMVFC_DRIVER_DATE "(April 12, 2013)" |
20 | |
21 | #define IBMVFC_DEFAULT_TIMEOUT 60 |
22 | #define IBMVFC_ADISC_CANCEL_TIMEOUT 45 |
23 | #define IBMVFC_ADISC_TIMEOUT 15 |
24 | #define IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT \ |
25 | (IBMVFC_ADISC_TIMEOUT + IBMVFC_ADISC_CANCEL_TIMEOUT) |
26 | #define IBMVFC_INIT_TIMEOUT 120 |
27 | #define IBMVFC_ABORT_TIMEOUT 8 |
28 | #define IBMVFC_ABORT_WAIT_TIMEOUT 40 |
29 | #define IBMVFC_MAX_REQUESTS_DEFAULT 100 |
30 | #define IBMVFC_SCSI_QDEPTH 128 |
31 | |
32 | #define IBMVFC_DEBUG 0 |
33 | #define IBMVFC_MAX_TARGETS 1024 |
34 | #define IBMVFC_MAX_LUN 0xffffffff |
35 | #define IBMVFC_MAX_SECTORS 0xffffu |
36 | #define IBMVFC_MAX_DISC_THREADS 4 |
37 | #define IBMVFC_TGT_MEMPOOL_SZ 64 |
38 | #define IBMVFC_MAX_CMDS_PER_LUN 64 |
39 | #define IBMVFC_MAX_HOST_INIT_RETRIES 6 |
40 | #define IBMVFC_MAX_TGT_INIT_RETRIES 3 |
41 | #define IBMVFC_DEV_LOSS_TMO (5 * 60) |
42 | #define IBMVFC_DEFAULT_LOG_LEVEL 2 |
43 | #define IBMVFC_MAX_CDB_LEN 16 |
44 | #define IBMVFC_CLS3_ERROR 0 |
45 | #define IBMVFC_MQ 1 |
46 | #define IBMVFC_SCSI_CHANNELS 8 |
47 | #define IBMVFC_MAX_SCSI_QUEUES 16 |
48 | #define IBMVFC_SCSI_HW_QUEUES 8 |
49 | #define IBMVFC_MIG_NO_SUB_TO_CRQ 0 |
50 | #define IBMVFC_MIG_NO_N_TO_M 0 |
51 | |
52 | /* |
53 | * Ensure we have resources for ERP and initialization: |
54 | * 1 for ERP |
55 | * 1 for initialization |
56 | * 1 for NPIV Logout |
57 | * 2 for BSG passthru |
58 | * 2 for each discovery thread |
59 | */ |
60 | #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + 2 + (disc_threads * 2)) |
61 | /* Reserved suset of events for cancelling channelized IO commands */ |
62 | #define IBMVFC_NUM_INTERNAL_SUBQ_REQ 4 |
63 | |
64 | #define IBMVFC_MAD_SUCCESS 0x00 |
65 | #define IBMVFC_MAD_NOT_SUPPORTED 0xF1 |
66 | #define IBMVFC_MAD_VERSION_NOT_SUPP 0xF2 |
67 | #define IBMVFC_MAD_FAILED 0xF7 |
68 | #define IBMVFC_MAD_DRIVER_FAILED 0xEE |
69 | #define IBMVFC_MAD_CRQ_ERROR 0xEF |
70 | |
71 | enum ibmvfc_crq_valid { |
72 | IBMVFC_CRQ_CMD_RSP = 0x80, |
73 | IBMVFC_CRQ_INIT_RSP = 0xC0, |
74 | IBMVFC_CRQ_XPORT_EVENT = 0xFF, |
75 | }; |
76 | |
77 | enum ibmvfc_crq_init_msg { |
78 | IBMVFC_CRQ_INIT = 0x01, |
79 | IBMVFC_CRQ_INIT_COMPLETE = 0x02, |
80 | }; |
81 | |
82 | enum ibmvfc_crq_xport_evts { |
83 | IBMVFC_PARTNER_FAILED = 0x01, |
84 | IBMVFC_PARTNER_DEREGISTER = 0x02, |
85 | IBMVFC_PARTITION_MIGRATED = 0x06, |
86 | }; |
87 | |
88 | enum ibmvfc_cmd_status_flags { |
89 | IBMVFC_FABRIC_MAPPED = 0x0001, |
90 | IBMVFC_VIOS_FAILURE = 0x0002, |
91 | IBMVFC_FC_FAILURE = 0x0004, |
92 | IBMVFC_FC_SCSI_ERROR = 0x0008, |
93 | IBMVFC_HW_EVENT_LOGGED = 0x0010, |
94 | IBMVFC_VIOS_LOGGED = 0x0020, |
95 | }; |
96 | |
97 | enum ibmvfc_fabric_mapped_errors { |
98 | IBMVFC_UNABLE_TO_ESTABLISH = 0x0001, |
99 | IBMVFC_XPORT_FAULT = 0x0002, |
100 | IBMVFC_CMD_TIMEOUT = 0x0003, |
101 | IBMVFC_ENETDOWN = 0x0004, |
102 | IBMVFC_HW_FAILURE = 0x0005, |
103 | IBMVFC_LINK_DOWN_ERR = 0x0006, |
104 | IBMVFC_LINK_DEAD_ERR = 0x0007, |
105 | IBMVFC_UNABLE_TO_REGISTER = 0x0008, |
106 | IBMVFC_XPORT_BUSY = 0x000A, |
107 | IBMVFC_XPORT_DEAD = 0x000B, |
108 | IBMVFC_CONFIG_ERROR = 0x000C, |
109 | IBMVFC_NAME_SERVER_FAIL = 0x000D, |
110 | IBMVFC_LINK_HALTED = 0x000E, |
111 | IBMVFC_XPORT_GENERAL = 0x8000, |
112 | }; |
113 | |
114 | enum ibmvfc_vios_errors { |
115 | IBMVFC_CRQ_FAILURE = 0x0001, |
116 | IBMVFC_SW_FAILURE = 0x0002, |
117 | IBMVFC_INVALID_PARAMETER = 0x0003, |
118 | IBMVFC_MISSING_PARAMETER = 0x0004, |
119 | IBMVFC_HOST_IO_BUS = 0x0005, |
120 | IBMVFC_TRANS_CANCELLED = 0x0006, |
121 | IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007, |
122 | IBMVFC_INSUFFICIENT_RESOURCE = 0x0008, |
123 | IBMVFC_PLOGI_REQUIRED = 0x0010, |
124 | IBMVFC_COMMAND_FAILED = 0x8000, |
125 | }; |
126 | |
127 | enum ibmvfc_mad_types { |
128 | IBMVFC_NPIV_LOGIN = 0x0001, |
129 | IBMVFC_DISC_TARGETS = 0x0002, |
130 | IBMVFC_PORT_LOGIN = 0x0004, |
131 | IBMVFC_PROCESS_LOGIN = 0x0008, |
132 | IBMVFC_QUERY_TARGET = 0x0010, |
133 | IBMVFC_MOVE_LOGIN = 0x0020, |
134 | IBMVFC_IMPLICIT_LOGOUT = 0x0040, |
135 | IBMVFC_PASSTHRU = 0x0200, |
136 | IBMVFC_TMF_MAD = 0x0100, |
137 | IBMVFC_NPIV_LOGOUT = 0x0800, |
138 | IBMVFC_CHANNEL_ENQUIRY = 0x1000, |
139 | IBMVFC_CHANNEL_SETUP = 0x2000, |
140 | IBMVFC_CONNECTION_INFO = 0x4000, |
141 | }; |
142 | |
143 | struct ibmvfc_mad_common { |
144 | __be32 version; |
145 | __be32 reserved; |
146 | __be32 opcode; |
147 | __be16 status; |
148 | __be16 length; |
149 | __be64 tag; |
150 | } __packed __aligned(8); |
151 | |
152 | struct ibmvfc_npiv_login_mad { |
153 | struct ibmvfc_mad_common common; |
154 | struct srp_direct_buf buffer; |
155 | } __packed __aligned(8); |
156 | |
157 | struct ibmvfc_npiv_logout_mad { |
158 | struct ibmvfc_mad_common common; |
159 | } __packed __aligned(8); |
160 | |
161 | #define IBMVFC_MAX_NAME 256 |
162 | |
163 | struct ibmvfc_npiv_login { |
164 | __be32 ostype; |
165 | #define IBMVFC_OS_LINUX 0x02 |
166 | __be32 pad; |
167 | __be64 max_dma_len; |
168 | __be32 max_payload; |
169 | __be32 max_response; |
170 | __be32 partition_num; |
171 | __be32 vfc_frame_version; |
172 | __be16 fcp_version; |
173 | __be16 flags; |
174 | #define IBMVFC_CLIENT_MIGRATED 0x01 |
175 | #define IBMVFC_FLUSH_ON_HALT 0x02 |
176 | __be32 max_cmds; |
177 | __be64 capabilities; |
178 | #define IBMVFC_CAN_MIGRATE 0x01 |
179 | #define IBMVFC_CAN_USE_CHANNELS 0x02 |
180 | #define IBMVFC_CAN_HANDLE_FPIN 0x04 |
181 | #define IBMVFC_CAN_USE_MAD_VERSION 0x08 |
182 | #define IBMVFC_CAN_SEND_VF_WWPN 0x10 |
183 | __be64 node_name; |
184 | struct srp_direct_buf async; |
185 | u8 partition_name[IBMVFC_MAX_NAME]; |
186 | u8 device_name[IBMVFC_MAX_NAME]; |
187 | u8 drc_name[IBMVFC_MAX_NAME]; |
188 | __be64 reserved2[2]; |
189 | } __packed __aligned(8); |
190 | |
191 | struct ibmvfc_common_svc_parms { |
192 | __be16 fcph_version; |
193 | __be16 b2b_credit; |
194 | __be16 features; |
195 | __be16 bb_rcv_sz; /* upper nibble is BB_SC_N */ |
196 | __be32 ratov; |
197 | __be32 edtov; |
198 | } __packed __aligned(4); |
199 | |
200 | struct ibmvfc_service_parms { |
201 | struct ibmvfc_common_svc_parms common; |
202 | u8 port_name[8]; |
203 | u8 node_name[8]; |
204 | __be32 class1_parms[4]; |
205 | __be32 class2_parms[4]; |
206 | __be32 class3_parms[4]; |
207 | __be32 obsolete[4]; |
208 | __be32 vendor_version[4]; |
209 | __be32 services_avail[2]; |
210 | __be32 ext_len; |
211 | __be32 reserved[30]; |
212 | __be32 clk_sync_qos[2]; |
213 | __be32 reserved2; |
214 | } __packed __aligned(4); |
215 | |
216 | struct ibmvfc_npiv_login_resp { |
217 | __be32 version; |
218 | __be16 status; |
219 | __be16 error; |
220 | __be32 flags; |
221 | #define IBMVFC_NATIVE_FC 0x01 |
222 | __be32 reserved; |
223 | __be64 capabilities; |
224 | #define IBMVFC_CAN_FLUSH_ON_HALT 0x08 |
225 | #define IBMVFC_CAN_SUPPRESS_ABTS 0x10 |
226 | #define IBMVFC_MAD_VERSION_CAP 0x20 |
227 | #define IBMVFC_HANDLE_VF_WWPN 0x40 |
228 | #define IBMVFC_CAN_SUPPORT_CHANNELS 0x80 |
229 | __be32 max_cmds; |
230 | __be32 scsi_id_sz; |
231 | __be64 max_dma_len; |
232 | __be64 scsi_id; |
233 | __be64 port_name; |
234 | __be64 node_name; |
235 | __be64 link_speed; |
236 | u8 partition_name[IBMVFC_MAX_NAME]; |
237 | u8 device_name[IBMVFC_MAX_NAME]; |
238 | u8 port_loc_code[IBMVFC_MAX_NAME]; |
239 | u8 drc_name[IBMVFC_MAX_NAME]; |
240 | struct ibmvfc_service_parms service_parms; |
241 | __be64 reserved2; |
242 | } __packed __aligned(8); |
243 | |
244 | union ibmvfc_npiv_login_data { |
245 | struct ibmvfc_npiv_login login; |
246 | struct ibmvfc_npiv_login_resp resp; |
247 | } __packed __aligned(8); |
248 | |
249 | struct ibmvfc_discover_targets_entry { |
250 | __be32 scsi_id; |
251 | __be32 pad; |
252 | __be64 wwpn; |
253 | #define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff |
254 | } __packed __aligned(8); |
255 | |
256 | struct ibmvfc_discover_targets { |
257 | struct ibmvfc_mad_common common; |
258 | struct srp_direct_buf buffer; |
259 | __be32 flags; |
260 | #define IBMVFC_DISC_TGT_PORT_ID_WWPN_LIST 0x02 |
261 | __be16 status; |
262 | __be16 error; |
263 | __be32 bufflen; |
264 | __be32 num_avail; |
265 | __be32 num_written; |
266 | __be64 reserved[2]; |
267 | } __packed __aligned(8); |
268 | |
269 | enum ibmvfc_fc_reason { |
270 | IBMVFC_INVALID_ELS_CMD_CODE = 0x01, |
271 | IBMVFC_INVALID_VERSION = 0x02, |
272 | IBMVFC_LOGICAL_ERROR = 0x03, |
273 | IBMVFC_INVALID_CT_IU_SIZE = 0x04, |
274 | IBMVFC_LOGICAL_BUSY = 0x05, |
275 | IBMVFC_PROTOCOL_ERROR = 0x07, |
276 | IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09, |
277 | IBMVFC_CMD_NOT_SUPPORTED = 0x0B, |
278 | IBMVFC_SERVER_NOT_AVAIL = 0x0D, |
279 | IBMVFC_CMD_IN_PROGRESS = 0x0E, |
280 | IBMVFC_VENDOR_SPECIFIC = 0xFF, |
281 | }; |
282 | |
283 | enum ibmvfc_fc_type { |
284 | IBMVFC_FABRIC_REJECT = 0x01, |
285 | IBMVFC_PORT_REJECT = 0x02, |
286 | IBMVFC_LS_REJECT = 0x03, |
287 | IBMVFC_FABRIC_BUSY = 0x04, |
288 | IBMVFC_PORT_BUSY = 0x05, |
289 | IBMVFC_BASIC_REJECT = 0x06, |
290 | }; |
291 | |
292 | enum ibmvfc_gs_explain { |
293 | IBMVFC_PORT_NAME_NOT_REG = 0x02, |
294 | }; |
295 | |
296 | struct ibmvfc_port_login { |
297 | struct ibmvfc_mad_common common; |
298 | __be64 scsi_id; |
299 | __be16 reserved; |
300 | __be16 fc_service_class; |
301 | __be32 blksz; |
302 | __be32 hdr_per_blk; |
303 | __be16 status; |
304 | __be16 error; /* also fc_reason */ |
305 | __be16 fc_explain; |
306 | __be16 fc_type; |
307 | __be32 reserved2; |
308 | struct ibmvfc_service_parms service_parms; |
309 | struct ibmvfc_service_parms service_parms_change; |
310 | __be64 target_wwpn; |
311 | __be64 reserved3[2]; |
312 | } __packed __aligned(8); |
313 | |
314 | struct ibmvfc_move_login { |
315 | struct ibmvfc_mad_common common; |
316 | __be64 old_scsi_id; |
317 | __be64 new_scsi_id; |
318 | __be64 wwpn; |
319 | __be64 node_name; |
320 | __be32 flags; |
321 | #define IBMVFC_MOVE_LOGIN_IMPLICIT_OLD_FAILED 0x01 |
322 | #define IBMVFC_MOVE_LOGIN_IMPLICIT_NEW_FAILED 0x02 |
323 | #define IBMVFC_MOVE_LOGIN_PORT_LOGIN_FAILED 0x04 |
324 | __be32 reserved; |
325 | struct ibmvfc_service_parms service_parms; |
326 | struct ibmvfc_service_parms service_parms_change; |
327 | __be32 reserved2; |
328 | __be16 service_class; |
329 | __be16 vios_flags; |
330 | #define IBMVFC_MOVE_LOGIN_VF_NOT_SENT_ADAPTER 0x01 |
331 | __be64 reserved3; |
332 | } __packed __aligned(8); |
333 | |
334 | struct ibmvfc_prli_svc_parms { |
335 | u8 type; |
336 | #define IBMVFC_SCSI_FCP_TYPE 0x08 |
337 | u8 type_ext; |
338 | __be16 flags; |
339 | #define IBMVFC_PRLI_ORIG_PA_VALID 0x8000 |
340 | #define IBMVFC_PRLI_RESP_PA_VALID 0x4000 |
341 | #define IBMVFC_PRLI_EST_IMG_PAIR 0x2000 |
342 | __be32 orig_pa; |
343 | __be32 resp_pa; |
344 | __be32 service_parms; |
345 | #define IBMVFC_PRLI_TASK_RETRY 0x00000200 |
346 | #define IBMVFC_PRLI_RETRY 0x00000100 |
347 | #define IBMVFC_PRLI_DATA_OVERLAY 0x00000040 |
348 | #define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020 |
349 | #define IBMVFC_PRLI_TARGET_FUNC 0x00000010 |
350 | #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002 |
351 | #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001 |
352 | } __packed __aligned(4); |
353 | |
354 | struct ibmvfc_process_login { |
355 | struct ibmvfc_mad_common common; |
356 | __be64 scsi_id; |
357 | struct ibmvfc_prli_svc_parms parms; |
358 | u8 reserved[48]; |
359 | __be16 status; |
360 | __be16 error; /* also fc_reason */ |
361 | __be32 reserved2; |
362 | __be64 target_wwpn; |
363 | __be64 reserved3[2]; |
364 | } __packed __aligned(8); |
365 | |
366 | struct ibmvfc_query_tgt { |
367 | struct ibmvfc_mad_common common; |
368 | __be64 wwpn; |
369 | __be64 scsi_id; |
370 | __be16 status; |
371 | __be16 error; |
372 | __be16 fc_explain; |
373 | __be16 fc_type; |
374 | __be64 reserved[2]; |
375 | } __packed __aligned(8); |
376 | |
377 | struct ibmvfc_implicit_logout { |
378 | struct ibmvfc_mad_common common; |
379 | __be64 old_scsi_id; |
380 | __be64 reserved[2]; |
381 | } __packed __aligned(8); |
382 | |
383 | struct ibmvfc_tmf { |
384 | struct ibmvfc_mad_common common; |
385 | __be64 scsi_id; |
386 | struct scsi_lun lun; |
387 | __be32 flags; |
388 | #define IBMVFC_TMF_ABORT_TASK 0x02 |
389 | #define IBMVFC_TMF_ABORT_TASK_SET 0x04 |
390 | #define IBMVFC_TMF_LUN_RESET 0x10 |
391 | #define IBMVFC_TMF_TGT_RESET 0x20 |
392 | #define IBMVFC_TMF_LUA_VALID 0x40 |
393 | #define IBMVFC_TMF_SUPPRESS_ABTS 0x80 |
394 | __be32 cancel_key; |
395 | __be32 my_cancel_key; |
396 | __be32 pad; |
397 | __be64 target_wwpn; |
398 | __be64 task_tag; |
399 | __be64 reserved[2]; |
400 | } __packed __aligned(8); |
401 | |
402 | enum ibmvfc_fcp_rsp_info_codes { |
403 | RSP_NO_FAILURE = 0x00, |
404 | RSP_TMF_REJECTED = 0x04, |
405 | RSP_TMF_FAILED = 0x05, |
406 | RSP_TMF_INVALID_LUN = 0x09, |
407 | }; |
408 | |
409 | struct ibmvfc_fcp_rsp_info { |
410 | u8 reserved[3]; |
411 | u8 rsp_code; |
412 | u8 reserved2[4]; |
413 | } __packed __aligned(2); |
414 | |
415 | enum ibmvfc_fcp_rsp_flags { |
416 | FCP_BIDI_RSP = 0x80, |
417 | FCP_BIDI_READ_RESID_UNDER = 0x40, |
418 | FCP_BIDI_READ_RESID_OVER = 0x20, |
419 | FCP_CONF_REQ = 0x10, |
420 | FCP_RESID_UNDER = 0x08, |
421 | FCP_RESID_OVER = 0x04, |
422 | FCP_SNS_LEN_VALID = 0x02, |
423 | FCP_RSP_LEN_VALID = 0x01, |
424 | }; |
425 | |
426 | union ibmvfc_fcp_rsp_data { |
427 | struct ibmvfc_fcp_rsp_info info; |
428 | u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)]; |
429 | } __packed __aligned(8); |
430 | |
431 | struct ibmvfc_fcp_rsp { |
432 | __be64 reserved; |
433 | __be16 retry_delay_timer; |
434 | u8 flags; |
435 | u8 scsi_status; |
436 | __be32 fcp_resid; |
437 | __be32 fcp_sense_len; |
438 | __be32 fcp_rsp_len; |
439 | union ibmvfc_fcp_rsp_data data; |
440 | } __packed __aligned(8); |
441 | |
442 | enum ibmvfc_cmd_flags { |
443 | IBMVFC_SCATTERLIST = 0x0001, |
444 | IBMVFC_NO_MEM_DESC = 0x0002, |
445 | IBMVFC_READ = 0x0004, |
446 | IBMVFC_WRITE = 0x0008, |
447 | IBMVFC_TMF = 0x0080, |
448 | IBMVFC_CLASS_3_ERR = 0x0100, |
449 | }; |
450 | |
451 | enum ibmvfc_fc_task_attr { |
452 | IBMVFC_SIMPLE_TASK = 0x00, |
453 | IBMVFC_HEAD_OF_QUEUE = 0x01, |
454 | IBMVFC_ORDERED_TASK = 0x02, |
455 | IBMVFC_ACA_TASK = 0x04, |
456 | }; |
457 | |
458 | enum ibmvfc_fc_tmf_flags { |
459 | IBMVFC_ABORT_TASK_SET = 0x02, |
460 | IBMVFC_LUN_RESET = 0x10, |
461 | IBMVFC_TARGET_RESET = 0x20, |
462 | }; |
463 | |
464 | struct ibmvfc_fcp_cmd_iu { |
465 | struct scsi_lun lun; |
466 | u8 crn; |
467 | u8 pri_task_attr; |
468 | u8 tmf_flags; |
469 | u8 add_cdb_len; |
470 | #define IBMVFC_RDDATA 0x02 |
471 | #define IBMVFC_WRDATA 0x01 |
472 | u8 cdb[IBMVFC_MAX_CDB_LEN]; |
473 | __be32 xfer_len; |
474 | } __packed __aligned(4); |
475 | |
476 | struct ibmvfc_cmd { |
477 | __be64 task_tag; |
478 | __be32 frame_type; |
479 | __be32 payload_len; |
480 | __be32 resp_len; |
481 | __be32 adapter_resid; |
482 | __be16 status; |
483 | __be16 error; |
484 | __be16 flags; |
485 | __be16 response_flags; |
486 | #define IBMVFC_ADAPTER_RESID_VALID 0x01 |
487 | __be32 cancel_key; |
488 | __be32 exchange_id; |
489 | struct srp_direct_buf ext_func; |
490 | struct srp_direct_buf ioba; |
491 | struct srp_direct_buf resp; |
492 | __be64 correlation; |
493 | __be64 tgt_scsi_id; |
494 | __be64 tag; |
495 | __be64 target_wwpn; |
496 | __be64 reserved3; |
497 | union { |
498 | struct { |
499 | struct ibmvfc_fcp_cmd_iu iu; |
500 | struct ibmvfc_fcp_rsp rsp; |
501 | } v1; |
502 | struct { |
503 | __be64 reserved4; |
504 | struct ibmvfc_fcp_cmd_iu iu; |
505 | struct ibmvfc_fcp_rsp rsp; |
506 | } v2; |
507 | }; |
508 | } __packed __aligned(8); |
509 | |
510 | struct ibmvfc_passthru_fc_iu { |
511 | __be32 payload[7]; |
512 | #define IBMVFC_ADISC 0x52000000 |
513 | __be32 response[7]; |
514 | }; |
515 | |
516 | struct ibmvfc_passthru_iu { |
517 | __be64 task_tag; |
518 | __be32 cmd_len; |
519 | __be32 rsp_len; |
520 | __be16 status; |
521 | __be16 error; |
522 | __be32 flags; |
523 | #define IBMVFC_FC_ELS 0x01 |
524 | #define IBMVFC_FC_CT_IU 0x02 |
525 | __be32 cancel_key; |
526 | #define IBMVFC_PASSTHRU_CANCEL_KEY 0x80000000 |
527 | #define IBMVFC_INTERNAL_CANCEL_KEY 0x80000001 |
528 | __be32 reserved; |
529 | struct srp_direct_buf cmd; |
530 | struct srp_direct_buf rsp; |
531 | __be64 correlation; |
532 | __be64 scsi_id; |
533 | __be64 tag; |
534 | __be64 target_wwpn; |
535 | __be64 reserved2[2]; |
536 | } __packed __aligned(8); |
537 | |
538 | struct ibmvfc_passthru_mad { |
539 | struct ibmvfc_mad_common common; |
540 | struct srp_direct_buf cmd_ioba; |
541 | struct ibmvfc_passthru_iu iu; |
542 | struct ibmvfc_passthru_fc_iu fc_iu; |
543 | } __packed __aligned(8); |
544 | |
545 | struct ibmvfc_channel_enquiry { |
546 | struct ibmvfc_mad_common common; |
547 | __be32 flags; |
548 | #define IBMVFC_NO_CHANNELS_TO_CRQ_SUPPORT 0x01 |
549 | #define IBMVFC_SUPPORT_VARIABLE_SUBQ_MSG 0x02 |
550 | #define IBMVFC_NO_N_TO_M_CHANNELS_SUPPORT 0x04 |
551 | __be32 num_scsi_subq_channels; |
552 | __be32 num_nvmeof_subq_channels; |
553 | __be32 num_scsi_vas_channels; |
554 | __be32 num_nvmeof_vas_channels; |
555 | } __packed __aligned(8); |
556 | |
557 | struct ibmvfc_channel_setup_mad { |
558 | struct ibmvfc_mad_common common; |
559 | struct srp_direct_buf buffer; |
560 | } __packed __aligned(8); |
561 | |
562 | #define IBMVFC_MAX_CHANNELS 502 |
563 | |
564 | struct ibmvfc_channel_setup { |
565 | __be32 flags; |
566 | #define IBMVFC_CANCEL_CHANNELS 0x01 |
567 | #define IBMVFC_USE_BUFFER 0x02 |
568 | #define IBMVFC_CHANNELS_CANCELED 0x04 |
569 | __be32 reserved; |
570 | __be32 num_scsi_subq_channels; |
571 | __be32 num_nvmeof_subq_channels; |
572 | __be32 num_scsi_vas_channels; |
573 | __be32 num_nvmeof_vas_channels; |
574 | struct srp_direct_buf buffer; |
575 | __be64 reserved2[5]; |
576 | __be64 channel_handles[IBMVFC_MAX_CHANNELS]; |
577 | } __packed __aligned(8); |
578 | |
579 | struct ibmvfc_connection_info { |
580 | struct ibmvfc_mad_common common; |
581 | __be64 information_bits; |
582 | #define IBMVFC_NO_FC_IO_CHANNEL 0x01 |
583 | #define IBMVFC_NO_PHYP_VAS 0x02 |
584 | #define IBMVFC_NO_PHYP_SUBQ 0x04 |
585 | #define IBMVFC_PHYP_DEPRECATED_SUBQ 0x08 |
586 | #define IBMVFC_PHYP_PRESERVED_SUBQ 0x10 |
587 | #define IBMVFC_PHYP_FULL_SUBQ 0x20 |
588 | __be64 reserved[16]; |
589 | } __packed __aligned(8); |
590 | |
591 | struct ibmvfc_trace_start_entry { |
592 | u32 xfer_len; |
593 | } __packed; |
594 | |
595 | struct ibmvfc_trace_end_entry { |
596 | u16 status; |
597 | u16 error; |
598 | u8 fcp_rsp_flags; |
599 | u8 rsp_code; |
600 | u8 scsi_status; |
601 | u8 reserved; |
602 | } __packed; |
603 | |
604 | struct ibmvfc_trace_entry { |
605 | struct ibmvfc_event *evt; |
606 | u32 time; |
607 | u32 scsi_id; |
608 | u32 lun; |
609 | u8 fmt; |
610 | u8 op_code; |
611 | u8 tmf_flags; |
612 | u8 type; |
613 | #define IBMVFC_TRC_START 0x00 |
614 | #define IBMVFC_TRC_END 0xff |
615 | union { |
616 | struct ibmvfc_trace_start_entry start; |
617 | struct ibmvfc_trace_end_entry end; |
618 | } u; |
619 | } __packed __aligned(8); |
620 | |
621 | enum ibmvfc_crq_formats { |
622 | IBMVFC_CMD_FORMAT = 0x01, |
623 | IBMVFC_ASYNC_EVENT = 0x02, |
624 | IBMVFC_MAD_FORMAT = 0x04, |
625 | }; |
626 | |
627 | enum ibmvfc_async_event { |
628 | IBMVFC_AE_ELS_PLOGI = 0x0001, |
629 | IBMVFC_AE_ELS_LOGO = 0x0002, |
630 | IBMVFC_AE_ELS_PRLO = 0x0004, |
631 | IBMVFC_AE_SCN_NPORT = 0x0008, |
632 | IBMVFC_AE_SCN_GROUP = 0x0010, |
633 | IBMVFC_AE_SCN_DOMAIN = 0x0020, |
634 | IBMVFC_AE_SCN_FABRIC = 0x0040, |
635 | IBMVFC_AE_LINK_UP = 0x0080, |
636 | IBMVFC_AE_LINK_DOWN = 0x0100, |
637 | IBMVFC_AE_LINK_DEAD = 0x0200, |
638 | IBMVFC_AE_HALT = 0x0400, |
639 | IBMVFC_AE_RESUME = 0x0800, |
640 | IBMVFC_AE_ADAPTER_FAILED = 0x1000, |
641 | IBMVFC_AE_FPIN = 0x2000, |
642 | }; |
643 | |
644 | struct ibmvfc_async_desc { |
645 | const char *desc; |
646 | enum ibmvfc_async_event ae; |
647 | int log_level; |
648 | }; |
649 | |
650 | struct ibmvfc_crq { |
651 | volatile u8 valid; |
652 | volatile u8 format; |
653 | u8 reserved[6]; |
654 | volatile __be64 ioba; |
655 | } __packed __aligned(8); |
656 | |
657 | struct ibmvfc_sub_crq { |
658 | struct ibmvfc_crq crq; |
659 | __be64 reserved[2]; |
660 | } __packed __aligned(8); |
661 | |
662 | enum ibmvfc_ae_link_state { |
663 | IBMVFC_AE_LS_LINK_UP = 0x01, |
664 | IBMVFC_AE_LS_LINK_BOUNCED = 0x02, |
665 | IBMVFC_AE_LS_LINK_DOWN = 0x04, |
666 | IBMVFC_AE_LS_LINK_DEAD = 0x08, |
667 | }; |
668 | |
669 | enum ibmvfc_ae_fpin_status { |
670 | IBMVFC_AE_FPIN_LINK_CONGESTED = 0x1, |
671 | IBMVFC_AE_FPIN_PORT_CONGESTED = 0x2, |
672 | IBMVFC_AE_FPIN_PORT_CLEARED = 0x3, |
673 | IBMVFC_AE_FPIN_PORT_DEGRADED = 0x4, |
674 | }; |
675 | |
676 | struct ibmvfc_async_crq { |
677 | volatile u8 valid; |
678 | u8 link_state; |
679 | u8 fpin_status; |
680 | u8 pad; |
681 | __be32 pad2; |
682 | volatile __be64 event; |
683 | volatile __be64 scsi_id; |
684 | volatile __be64 wwpn; |
685 | volatile __be64 node_name; |
686 | __be64 reserved; |
687 | } __packed __aligned(8); |
688 | |
689 | union ibmvfc_iu { |
690 | struct ibmvfc_mad_common mad_common; |
691 | struct ibmvfc_npiv_login_mad npiv_login; |
692 | struct ibmvfc_npiv_logout_mad npiv_logout; |
693 | struct ibmvfc_discover_targets discover_targets; |
694 | struct ibmvfc_port_login plogi; |
695 | struct ibmvfc_process_login prli; |
696 | struct ibmvfc_move_login move_login; |
697 | struct ibmvfc_query_tgt query_tgt; |
698 | struct ibmvfc_implicit_logout implicit_logout; |
699 | struct ibmvfc_tmf tmf; |
700 | struct ibmvfc_cmd cmd; |
701 | struct ibmvfc_passthru_mad passthru; |
702 | struct ibmvfc_channel_enquiry channel_enquiry; |
703 | struct ibmvfc_channel_setup_mad channel_setup; |
704 | struct ibmvfc_connection_info connection_info; |
705 | } __packed __aligned(8); |
706 | |
707 | enum ibmvfc_target_action { |
708 | IBMVFC_TGT_ACTION_NONE = 0, |
709 | IBMVFC_TGT_ACTION_INIT, |
710 | IBMVFC_TGT_ACTION_INIT_WAIT, |
711 | IBMVFC_TGT_ACTION_LOGOUT_RPORT, |
712 | IBMVFC_TGT_ACTION_LOGOUT_RPORT_WAIT, |
713 | IBMVFC_TGT_ACTION_DEL_RPORT, |
714 | IBMVFC_TGT_ACTION_DELETED_RPORT, |
715 | IBMVFC_TGT_ACTION_DEL_AND_LOGOUT_RPORT, |
716 | IBMVFC_TGT_ACTION_LOGOUT_DELETED_RPORT, |
717 | }; |
718 | |
719 | enum ibmvfc_protocol { |
720 | IBMVFC_PROTO_SCSI = 0, |
721 | IBMVFC_PROTO_NVME = 1, |
722 | }; |
723 | |
724 | struct ibmvfc_target { |
725 | struct list_head queue; |
726 | struct ibmvfc_host *vhost; |
727 | enum ibmvfc_protocol protocol; |
728 | u64 scsi_id; |
729 | u64 wwpn; |
730 | u64 new_scsi_id; |
731 | struct fc_rport *rport; |
732 | int target_id; |
733 | enum ibmvfc_target_action action; |
734 | int need_login; |
735 | int add_rport; |
736 | int init_retries; |
737 | int logo_rcvd; |
738 | int move_login; |
739 | u32 cancel_key; |
740 | struct ibmvfc_service_parms service_parms; |
741 | struct ibmvfc_service_parms service_parms_change; |
742 | struct fc_rport_identifiers ids; |
743 | void (*job_step) (struct ibmvfc_target *); |
744 | struct timer_list timer; |
745 | struct kref kref; |
746 | }; |
747 | |
748 | /* a unit of work for the hosting partition */ |
749 | struct ibmvfc_event { |
750 | struct list_head queue_list; |
751 | struct list_head cancel; |
752 | struct ibmvfc_host *vhost; |
753 | struct ibmvfc_queue *queue; |
754 | struct ibmvfc_target *tgt; |
755 | struct scsi_cmnd *cmnd; |
756 | atomic_t free; |
757 | atomic_t active; |
758 | union ibmvfc_iu *xfer_iu; |
759 | void (*done)(struct ibmvfc_event *evt); |
760 | void (*_done)(struct ibmvfc_event *evt); |
761 | struct ibmvfc_crq crq; |
762 | union ibmvfc_iu iu; |
763 | union ibmvfc_iu *sync_iu; |
764 | struct srp_direct_buf *ext_list; |
765 | dma_addr_t ext_list_token; |
766 | struct completion comp; |
767 | struct completion *eh_comp; |
768 | struct timer_list timer; |
769 | u16 hwq; |
770 | u8 reserved; |
771 | }; |
772 | |
773 | /* a pool of event structs for use */ |
774 | struct ibmvfc_event_pool { |
775 | struct ibmvfc_event *events; |
776 | u32 size; |
777 | union ibmvfc_iu *iu_storage; |
778 | dma_addr_t iu_token; |
779 | }; |
780 | |
781 | enum ibmvfc_msg_fmt { |
782 | IBMVFC_CRQ_FMT = 0, |
783 | IBMVFC_ASYNC_FMT, |
784 | IBMVFC_SUB_CRQ_FMT, |
785 | }; |
786 | |
787 | union ibmvfc_msgs { |
788 | void *handle; |
789 | struct ibmvfc_crq *crq; |
790 | struct ibmvfc_async_crq *async; |
791 | struct ibmvfc_sub_crq *scrq; |
792 | }; |
793 | |
794 | struct ibmvfc_queue { |
795 | union ibmvfc_msgs msgs; |
796 | dma_addr_t msg_token; |
797 | enum ibmvfc_msg_fmt fmt; |
798 | int size, cur; |
799 | spinlock_t _lock; |
800 | spinlock_t *q_lock; |
801 | |
802 | struct ibmvfc_host *vhost; |
803 | struct ibmvfc_event_pool evt_pool; |
804 | struct list_head sent; |
805 | struct list_head free; |
806 | u16 total_depth; |
807 | u16 evt_depth; |
808 | u16 reserved_depth; |
809 | u16 evt_free; |
810 | u16 reserved_free; |
811 | spinlock_t l_lock; |
812 | |
813 | union ibmvfc_iu cancel_rsp; |
814 | |
815 | /* Sub-CRQ fields */ |
816 | unsigned long cookie; |
817 | unsigned long vios_cookie; |
818 | unsigned long hw_irq; |
819 | unsigned long irq; |
820 | unsigned long hwq_id; |
821 | char name[32]; |
822 | irq_handler_t handler; |
823 | }; |
824 | |
825 | struct ibmvfc_channels { |
826 | struct ibmvfc_queue *scrqs; |
827 | enum ibmvfc_protocol protocol; |
828 | unsigned int active_queues; |
829 | unsigned int desired_queues; |
830 | unsigned int max_queues; |
831 | int disc_buf_sz; |
832 | struct ibmvfc_discover_targets_entry *disc_buf; |
833 | dma_addr_t disc_buf_dma; |
834 | }; |
835 | |
836 | enum ibmvfc_host_action { |
837 | IBMVFC_HOST_ACTION_NONE = 0, |
838 | IBMVFC_HOST_ACTION_RESET, |
839 | IBMVFC_HOST_ACTION_REENABLE, |
840 | IBMVFC_HOST_ACTION_LOGO, |
841 | IBMVFC_HOST_ACTION_LOGO_WAIT, |
842 | IBMVFC_HOST_ACTION_INIT, |
843 | IBMVFC_HOST_ACTION_INIT_WAIT, |
844 | IBMVFC_HOST_ACTION_QUERY, |
845 | IBMVFC_HOST_ACTION_QUERY_TGTS, |
846 | IBMVFC_HOST_ACTION_TGT_DEL, |
847 | IBMVFC_HOST_ACTION_ALLOC_TGTS, |
848 | IBMVFC_HOST_ACTION_TGT_INIT, |
849 | IBMVFC_HOST_ACTION_TGT_DEL_FAILED, |
850 | }; |
851 | |
852 | enum ibmvfc_host_state { |
853 | IBMVFC_NO_CRQ = 0, |
854 | IBMVFC_INITIALIZING, |
855 | IBMVFC_ACTIVE, |
856 | IBMVFC_HALTED, |
857 | IBMVFC_LINK_DOWN, |
858 | IBMVFC_LINK_DEAD, |
859 | IBMVFC_HOST_OFFLINE, |
860 | }; |
861 | |
862 | struct ibmvfc_host { |
863 | char name[8]; |
864 | struct list_head queue; |
865 | struct Scsi_Host *host; |
866 | enum ibmvfc_host_state state; |
867 | enum ibmvfc_host_action action; |
868 | #define IBMVFC_NUM_TRACE_INDEX_BITS 8 |
869 | #define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS) |
870 | #define IBMVFC_TRACE_INDEX_MASK (IBMVFC_NUM_TRACE_ENTRIES - 1) |
871 | #define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES) |
872 | struct ibmvfc_trace_entry *trace; |
873 | atomic_t trace_index; |
874 | int num_targets; |
875 | struct list_head targets; |
876 | struct list_head purge; |
877 | struct device *dev; |
878 | struct dma_pool *sg_pool; |
879 | mempool_t *tgt_pool; |
880 | struct ibmvfc_queue crq; |
881 | struct ibmvfc_queue async_crq; |
882 | struct ibmvfc_channels scsi_scrqs; |
883 | struct ibmvfc_npiv_login login_info; |
884 | union ibmvfc_npiv_login_data *login_buf; |
885 | dma_addr_t login_buf_dma; |
886 | struct ibmvfc_channel_setup *channel_setup_buf; |
887 | dma_addr_t channel_setup_dma; |
888 | int log_level; |
889 | struct mutex passthru_mutex; |
890 | unsigned int max_vios_scsi_channels; |
891 | int task_set; |
892 | int init_retries; |
893 | int discovery_threads; |
894 | int abort_threads; |
895 | unsigned int client_migrated:1; |
896 | unsigned int reinit:1; |
897 | unsigned int delay_init:1; |
898 | unsigned int logged_in:1; |
899 | unsigned int mq_enabled:1; |
900 | unsigned int using_channels:1; |
901 | unsigned int do_enquiry:1; |
902 | unsigned int aborting_passthru:1; |
903 | unsigned int scan_complete:1; |
904 | int scan_timeout; |
905 | int events_to_log; |
906 | #define IBMVFC_AE_LINKUP 0x0001 |
907 | #define IBMVFC_AE_LINKDOWN 0x0002 |
908 | #define IBMVFC_AE_RSCN 0x0004 |
909 | unsigned int partition_number; |
910 | char partition_name[97]; |
911 | void (*job_step) (struct ibmvfc_host *); |
912 | struct task_struct *work_thread; |
913 | struct tasklet_struct tasklet; |
914 | struct work_struct rport_add_work_q; |
915 | wait_queue_head_t init_wait_q; |
916 | wait_queue_head_t work_wait_q; |
917 | }; |
918 | |
919 | #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0) |
920 | |
921 | #define tgt_dbg(t, fmt, ...) \ |
922 | DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)) |
923 | |
924 | #define tgt_info(t, fmt, ...) \ |
925 | dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) |
926 | |
927 | #define tgt_err(t, fmt, ...) \ |
928 | dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) |
929 | |
930 | #define tgt_log(t, level, fmt, ...) \ |
931 | do { \ |
932 | if ((t)->vhost->log_level >= level) \ |
933 | tgt_err(t, fmt, ##__VA_ARGS__); \ |
934 | } while (0) |
935 | |
936 | #define ibmvfc_dbg(vhost, ...) \ |
937 | DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__)) |
938 | |
939 | #define ibmvfc_log(vhost, level, ...) \ |
940 | do { \ |
941 | if ((vhost)->log_level >= level) \ |
942 | dev_err((vhost)->dev, ##__VA_ARGS__); \ |
943 | } while (0) |
944 | |
945 | #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__)) |
946 | #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__)) |
947 | |
948 | #ifdef CONFIG_SCSI_IBMVFC_TRACE |
949 | #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr) |
950 | #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr) |
951 | #else |
952 | #define ibmvfc_create_trace_file(kobj, attr) 0 |
953 | #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0) |
954 | #endif |
955 | |
956 | #endif |
957 | |