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[SCSI] ibmvfc: Driver version 1.0.9
[net-next-2.6.git] / drivers / scsi / ibmvscsi / ibmvfc.h
CommitLineData
072b91f9
BK		 1/*
2 * ibmvfc.h -- driver for IBM Power Virtual Fibre Channel Adapter
3 *
4 * Written By: Brian King <brking@linux.vnet.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) IBM Corporation, 2008
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24#ifndef _IBMVFC_H
25#define _IBMVFC_H
26
27#include <linux/list.h>
28#include <linux/types.h>
29#include "viosrp.h"
30
31#define IBMVFC_NAME "ibmvfc"
7e41dfda
BK		 32#define IBMVFC_DRIVER_VERSION "1.0.9"
33#define IBMVFC_DRIVER_DATE "(August 5, 2010)"
072b91f9 34
14ae6fac 35#define IBMVFC_DEFAULT_TIMEOUT 60
10501e1c
BK		 36#define IBMVFC_ADISC_CANCEL_TIMEOUT 45
37#define IBMVFC_ADISC_TIMEOUT 15
38#define IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT \
39 (IBMVFC_ADISC_TIMEOUT + IBMVFC_ADISC_CANCEL_TIMEOUT)
d2131b33 40#define IBMVFC_INIT_TIMEOUT 120
d2fab5cf 41#define IBMVFC_ABORT_TIMEOUT 8
daa142d1 42#define IBMVFC_ABORT_WAIT_TIMEOUT 40
072b91f9
BK		 43#define IBMVFC_MAX_REQUESTS_DEFAULT 100
44
45#define IBMVFC_DEBUG 0
46#define IBMVFC_MAX_TARGETS 1024
47#define IBMVFC_MAX_LUN 0xffffffff
48#define IBMVFC_MAX_SECTORS 0xffffu
49#define IBMVFC_MAX_DISC_THREADS 4
50#define IBMVFC_TGT_MEMPOOL_SZ 64
51#define IBMVFC_MAX_CMDS_PER_LUN 64
1c41fa82
BK		 52#define IBMVFC_MAX_HOST_INIT_RETRIES 6
53#define IBMVFC_MAX_TGT_INIT_RETRIES 3
072b91f9
BK		 54#define IBMVFC_DEV_LOSS_TMO (5 * 60)
55#define IBMVFC_DEFAULT_LOG_LEVEL 2
56#define IBMVFC_MAX_CDB_LEN 16
57
58/*
59 * Ensure we have resources for ERP and initialization:
60 * 1 for ERP
61 * 1 for initialization
79111d08 62 * 1 for NPIV Logout
d31429e1 63 * 2 for BSG passthru
10501e1c 64 * 2 for each discovery thread
072b91f9 65 */
d31429e1 66#define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + 2 + (disc_threads * 2))
072b91f9
BK		 67
68#define IBMVFC_MAD_SUCCESS 0x00
69#define IBMVFC_MAD_NOT_SUPPORTED 0xF1
70#define IBMVFC_MAD_FAILED 0xF7
71#define IBMVFC_MAD_DRIVER_FAILED 0xEE
72#define IBMVFC_MAD_CRQ_ERROR 0xEF
73
74enum ibmvfc_crq_valid {
75 IBMVFC_CRQ_CMD_RSP = 0x80,
76 IBMVFC_CRQ_INIT_RSP = 0xC0,
77 IBMVFC_CRQ_XPORT_EVENT = 0xFF,
78};
79
80enum ibmvfc_crq_format {
81 IBMVFC_CRQ_INIT = 0x01,
82 IBMVFC_CRQ_INIT_COMPLETE = 0x02,
83 IBMVFC_PARTITION_MIGRATED = 0x06,
84};
85
86enum ibmvfc_cmd_status_flags {
87 IBMVFC_FABRIC_MAPPED = 0x0001,
88 IBMVFC_VIOS_FAILURE = 0x0002,
89 IBMVFC_FC_FAILURE = 0x0004,
90 IBMVFC_FC_SCSI_ERROR = 0x0008,
91 IBMVFC_HW_EVENT_LOGGED = 0x0010,
92 IBMVFC_VIOS_LOGGED = 0x0020,
93};
94
95enum ibmvfc_fabric_mapped_errors {
96 IBMVFC_UNABLE_TO_ESTABLISH = 0x0001,
97 IBMVFC_XPORT_FAULT = 0x0002,
98 IBMVFC_CMD_TIMEOUT = 0x0003,
99 IBMVFC_ENETDOWN = 0x0004,
100 IBMVFC_HW_FAILURE = 0x0005,
101 IBMVFC_LINK_DOWN_ERR = 0x0006,
102 IBMVFC_LINK_DEAD_ERR = 0x0007,
103 IBMVFC_UNABLE_TO_REGISTER = 0x0008,
104 IBMVFC_XPORT_BUSY = 0x000A,
105 IBMVFC_XPORT_DEAD = 0x000B,
106 IBMVFC_CONFIG_ERROR = 0x000C,
107 IBMVFC_NAME_SERVER_FAIL = 0x000D,
108 IBMVFC_LINK_HALTED = 0x000E,
109 IBMVFC_XPORT_GENERAL = 0x8000,
110};
111
112enum ibmvfc_vios_errors {
113 IBMVFC_CRQ_FAILURE = 0x0001,
114 IBMVFC_SW_FAILURE = 0x0002,
115 IBMVFC_INVALID_PARAMETER = 0x0003,
116 IBMVFC_MISSING_PARAMETER = 0x0004,
117 IBMVFC_HOST_IO_BUS = 0x0005,
118 IBMVFC_TRANS_CANCELLED = 0x0006,
119 IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
120 IBMVFC_INSUFFICIENT_RESOURCE = 0x0008,
646d3857 121 IBMVFC_PLOGI_REQUIRED = 0x0010,
072b91f9
BK		 122 IBMVFC_COMMAND_FAILED = 0x8000,
123};
124
125enum ibmvfc_mad_types {
126 IBMVFC_NPIV_LOGIN = 0x0001,
127 IBMVFC_DISC_TARGETS = 0x0002,
128 IBMVFC_PORT_LOGIN = 0x0004,
129 IBMVFC_PROCESS_LOGIN = 0x0008,
130 IBMVFC_QUERY_TARGET = 0x0010,
131 IBMVFC_IMPLICIT_LOGOUT = 0x0040,
989b8545 132 IBMVFC_PASSTHRU = 0x0200,
072b91f9 133 IBMVFC_TMF_MAD = 0x0100,
79111d08 134 IBMVFC_NPIV_LOGOUT = 0x0800,
072b91f9
BK		 135};
136
137struct ibmvfc_mad_common {
138 u32 version;
139 u32 reserved;
140 u32 opcode;
141 u16 status;
142 u16 length;
143 u64 tag;
144}__attribute__((packed, aligned (8)));
145
146struct ibmvfc_npiv_login_mad {
147 struct ibmvfc_mad_common common;
148 struct srp_direct_buf buffer;
149}__attribute__((packed, aligned (8)));
150
79111d08
BK		 151struct ibmvfc_npiv_logout_mad {
152 struct ibmvfc_mad_common common;
153}__attribute__((packed, aligned (8)));
154
072b91f9
BK		 155#define IBMVFC_MAX_NAME 256
156
157struct ibmvfc_npiv_login {
158 u32 ostype;
159#define IBMVFC_OS_LINUX 0x02
160 u32 pad;
161 u64 max_dma_len;
162 u32 max_payload;
163 u32 max_response;
164 u32 partition_num;
165 u32 vfc_frame_version;
166 u16 fcp_version;
167 u16 flags;
168#define IBMVFC_CLIENT_MIGRATED 0x01
169#define IBMVFC_FLUSH_ON_HALT 0x02
170 u32 max_cmds;
171 u64 capabilities;
172#define IBMVFC_CAN_MIGRATE 0x01
173 u64 node_name;
174 struct srp_direct_buf async;
175 u8 partition_name[IBMVFC_MAX_NAME];
176 u8 device_name[IBMVFC_MAX_NAME];
177 u8 drc_name[IBMVFC_MAX_NAME];
178 u64 reserved2[2];
179}__attribute__((packed, aligned (8)));
180
181struct ibmvfc_common_svc_parms {
182 u16 fcph_version;
183 u16 b2b_credit;
184 u16 features;
185 u16 bb_rcv_sz; /* upper nibble is BB_SC_N */
186 u32 ratov;
187 u32 edtov;
188}__attribute__((packed, aligned (4)));
189
190struct ibmvfc_service_parms {
191 struct ibmvfc_common_svc_parms common;
192 u8 port_name[8];
193 u8 node_name[8];
194 u32 class1_parms[4];
195 u32 class2_parms[4];
196 u32 class3_parms[4];
197 u32 obsolete[4];
198 u32 vendor_version[4];
199 u32 services_avail[2];
200 u32 ext_len;
201 u32 reserved[30];
202 u32 clk_sync_qos[2];
203}__attribute__((packed, aligned (4)));
204
205struct ibmvfc_npiv_login_resp {
206 u32 version;
207 u16 status;
208 u16 error;
209 u32 flags;
210#define IBMVFC_NATIVE_FC 0x01
211#define IBMVFC_CAN_FLUSH_ON_HALT 0x08
212 u32 reserved;
497f9c50
BK		 213 u64 capabilities;
214#define IBMVFC_CAN_FLUSH_ON_HALT 0x08
072b91f9
BK		 215 u32 max_cmds;
216 u32 scsi_id_sz;
217 u64 max_dma_len;
218 u64 scsi_id;
219 u64 port_name;
220 u64 node_name;
221 u64 link_speed;
222 u8 partition_name[IBMVFC_MAX_NAME];
223 u8 device_name[IBMVFC_MAX_NAME];
224 u8 port_loc_code[IBMVFC_MAX_NAME];
225 u8 drc_name[IBMVFC_MAX_NAME];
226 struct ibmvfc_service_parms service_parms;
227 u64 reserved2;
228}__attribute__((packed, aligned (8)));
229
230union ibmvfc_npiv_login_data {
231 struct ibmvfc_npiv_login login;
232 struct ibmvfc_npiv_login_resp resp;
233}__attribute__((packed, aligned (8)));
234
235struct ibmvfc_discover_targets_buf {
236 u32 scsi_id[1];
237#define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff
238};
239
240struct ibmvfc_discover_targets {
241 struct ibmvfc_mad_common common;
242 struct srp_direct_buf buffer;
243 u32 flags;
244 u16 status;
245 u16 error;
246 u32 bufflen;
247 u32 num_avail;
248 u32 num_written;
249 u64 reserved[2];
250}__attribute__((packed, aligned (8)));
251
252enum ibmvfc_fc_reason {
253 IBMVFC_INVALID_ELS_CMD_CODE = 0x01,
254 IBMVFC_INVALID_VERSION = 0x02,
255 IBMVFC_LOGICAL_ERROR = 0x03,
256 IBMVFC_INVALID_CT_IU_SIZE = 0x04,
257 IBMVFC_LOGICAL_BUSY = 0x05,
258 IBMVFC_PROTOCOL_ERROR = 0x07,
259 IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09,
260 IBMVFC_CMD_NOT_SUPPORTED = 0x0B,
261 IBMVFC_SERVER_NOT_AVAIL = 0x0D,
262 IBMVFC_CMD_IN_PROGRESS = 0x0E,
263 IBMVFC_VENDOR_SPECIFIC = 0xFF,
264};
265
266enum ibmvfc_fc_type {
267 IBMVFC_FABRIC_REJECT = 0x01,
268 IBMVFC_PORT_REJECT = 0x02,
269 IBMVFC_LS_REJECT = 0x03,
270 IBMVFC_FABRIC_BUSY = 0x04,
271 IBMVFC_PORT_BUSY = 0x05,
272 IBMVFC_BASIC_REJECT = 0x06,
273};
274
275enum ibmvfc_gs_explain {
276 IBMVFC_PORT_NAME_NOT_REG = 0x02,
277};
278
279struct ibmvfc_port_login {
280 struct ibmvfc_mad_common common;
281 u64 scsi_id;
282 u16 reserved;
283 u16 fc_service_class;
284 u32 blksz;
285 u32 hdr_per_blk;
286 u16 status;
287 u16 error; /* also fc_reason */
288 u16 fc_explain;
289 u16 fc_type;
290 u32 reserved2;
291 struct ibmvfc_service_parms service_parms;
292 struct ibmvfc_service_parms service_parms_change;
293 u64 reserved3[2];
294}__attribute__((packed, aligned (8)));
295
296struct ibmvfc_prli_svc_parms {
297 u8 type;
298#define IBMVFC_SCSI_FCP_TYPE 0x08
299 u8 type_ext;
300 u16 flags;
301#define IBMVFC_PRLI_ORIG_PA_VALID 0x8000
302#define IBMVFC_PRLI_RESP_PA_VALID 0x4000
303#define IBMVFC_PRLI_EST_IMG_PAIR 0x2000
304 u32 orig_pa;
305 u32 resp_pa;
306 u32 service_parms;
307#define IBMVFC_PRLI_TASK_RETRY 0x00000200
308#define IBMVFC_PRLI_RETRY 0x00000100
309#define IBMVFC_PRLI_DATA_OVERLAY 0x00000040
310#define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020
311#define IBMVFC_PRLI_TARGET_FUNC 0x00000010
312#define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002
313#define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001
314}__attribute__((packed, aligned (4)));
315
316struct ibmvfc_process_login {
317 struct ibmvfc_mad_common common;
318 u64 scsi_id;
319 struct ibmvfc_prli_svc_parms parms;
320 u8 reserved[48];
321 u16 status;
322 u16 error; /* also fc_reason */
323 u32 reserved2;
324 u64 reserved3[2];
325}__attribute__((packed, aligned (8)));
326
327struct ibmvfc_query_tgt {
328 struct ibmvfc_mad_common common;
329 u64 wwpn;
330 u64 scsi_id;
331 u16 status;
332 u16 error;
333 u16 fc_explain;
334 u16 fc_type;
335 u64 reserved[2];
336}__attribute__((packed, aligned (8)));
337
338struct ibmvfc_implicit_logout {
339 struct ibmvfc_mad_common common;
340 u64 old_scsi_id;
341 u64 reserved[2];
342}__attribute__((packed, aligned (8)));
343
344struct ibmvfc_tmf {
345 struct ibmvfc_mad_common common;
346 u64 scsi_id;
347 struct scsi_lun lun;
348 u32 flags;
349#define IBMVFC_TMF_ABORT_TASK 0x02
350#define IBMVFC_TMF_ABORT_TASK_SET 0x04
351#define IBMVFC_TMF_LUN_RESET 0x10
352#define IBMVFC_TMF_TGT_RESET 0x20
353#define IBMVFC_TMF_LUA_VALID 0x40
354 u32 cancel_key;
355 u32 my_cancel_key;
072b91f9
BK		 356 u32 pad;
357 u64 reserved[2];
358}__attribute__((packed, aligned (8)));
359
360enum ibmvfc_fcp_rsp_info_codes {
361 RSP_NO_FAILURE = 0x00,
362 RSP_TMF_REJECTED = 0x04,
363 RSP_TMF_FAILED = 0x05,
364 RSP_TMF_INVALID_LUN = 0x09,
365};
366
367struct ibmvfc_fcp_rsp_info {
368 u16 reserved;
369 u8 rsp_code;
370 u8 reserved2[4];
371}__attribute__((packed, aligned (2)));
372
373enum ibmvfc_fcp_rsp_flags {
374 FCP_BIDI_RSP = 0x80,
375 FCP_BIDI_READ_RESID_UNDER = 0x40,
376 FCP_BIDI_READ_RESID_OVER = 0x20,
377 FCP_CONF_REQ = 0x10,
378 FCP_RESID_UNDER = 0x08,
379 FCP_RESID_OVER = 0x04,
380 FCP_SNS_LEN_VALID = 0x02,
381 FCP_RSP_LEN_VALID = 0x01,
382};
383
384union ibmvfc_fcp_rsp_data {
385 struct ibmvfc_fcp_rsp_info info;
386 u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
387}__attribute__((packed, aligned (8)));
388
389struct ibmvfc_fcp_rsp {
390 u64 reserved;
391 u16 retry_delay_timer;
392 u8 flags;
393 u8 scsi_status;
394 u32 fcp_resid;
395 u32 fcp_sense_len;
396 u32 fcp_rsp_len;
397 union ibmvfc_fcp_rsp_data data;
398}__attribute__((packed, aligned (8)));
399
400enum ibmvfc_cmd_flags {
401 IBMVFC_SCATTERLIST = 0x0001,
402 IBMVFC_NO_MEM_DESC = 0x0002,
403 IBMVFC_READ = 0x0004,
404 IBMVFC_WRITE = 0x0008,
405 IBMVFC_TMF = 0x0080,
406 IBMVFC_CLASS_3_ERR = 0x0100,
407};
408
409enum ibmvfc_fc_task_attr {
410 IBMVFC_SIMPLE_TASK = 0x00,
411 IBMVFC_HEAD_OF_QUEUE = 0x01,
412 IBMVFC_ORDERED_TASK = 0x02,
413 IBMVFC_ACA_TASK = 0x04,
414};
415
416enum ibmvfc_fc_tmf_flags {
417 IBMVFC_ABORT_TASK_SET = 0x02,
418 IBMVFC_LUN_RESET = 0x10,
419 IBMVFC_TARGET_RESET = 0x20,
420};
421
422struct ibmvfc_fcp_cmd_iu {
423 struct scsi_lun lun;
424 u8 crn;
425 u8 pri_task_attr;
426 u8 tmf_flags;
427 u8 add_cdb_len;
428#define IBMVFC_RDDATA 0x02
429#define IBMVFC_WRDATA 0x01
430 u8 cdb[IBMVFC_MAX_CDB_LEN];
431 u32 xfer_len;
432}__attribute__((packed, aligned (4)));
433
434struct ibmvfc_cmd {
435 u64 task_tag;
436 u32 frame_type;
437 u32 payload_len;
438 u32 resp_len;
439 u32 adapter_resid;
440 u16 status;
441 u16 error;
442 u16 flags;
443 u16 response_flags;
444#define IBMVFC_ADAPTER_RESID_VALID 0x01
445 u32 cancel_key;
446 u32 exchange_id;
447 struct srp_direct_buf ext_func;
448 struct srp_direct_buf ioba;
449 struct srp_direct_buf resp;
450 u64 correlation;
451 u64 tgt_scsi_id;
452 u64 tag;
453 u64 reserved3[2];
454 struct ibmvfc_fcp_cmd_iu iu;
455 struct ibmvfc_fcp_rsp rsp;
456}__attribute__((packed, aligned (8)));
457
989b8545
BK		 458struct ibmvfc_passthru_fc_iu {
459 u32 payload[7];
460#define IBMVFC_ADISC 0x52000000
461 u32 response[7];
462};
463
464struct ibmvfc_passthru_iu {
465 u64 task_tag;
466 u32 cmd_len;
467 u32 rsp_len;
468 u16 status;
469 u16 error;
470 u32 flags;
471#define IBMVFC_FC_ELS 0x01
d31429e1 472#define IBMVFC_FC_CT_IU 0x02
989b8545 473 u32 cancel_key;
d31429e1
BK		 474#define IBMVFC_PASSTHRU_CANCEL_KEY 0x80000000
475#define IBMVFC_INTERNAL_CANCEL_KEY 0x80000001
989b8545
BK		 476 u32 reserved;
477 struct srp_direct_buf cmd;
478 struct srp_direct_buf rsp;
479 u64 correlation;
480 u64 scsi_id;
481 u64 tag;
482 u64 reserved2[2];
483}__attribute__((packed, aligned (8)));
484
485struct ibmvfc_passthru_mad {
486 struct ibmvfc_mad_common common;
487 struct srp_direct_buf cmd_ioba;
488 struct ibmvfc_passthru_iu iu;
489 struct ibmvfc_passthru_fc_iu fc_iu;
490}__attribute__((packed, aligned (8)));
491
072b91f9
BK		 492struct ibmvfc_trace_start_entry {
493 u32 xfer_len;
494}__attribute__((packed));
495
496struct ibmvfc_trace_end_entry {
497 u16 status;
498 u16 error;
499 u8 fcp_rsp_flags;
500 u8 rsp_code;
501 u8 scsi_status;
502 u8 reserved;
503}__attribute__((packed));
504
505struct ibmvfc_trace_entry {
506 struct ibmvfc_event *evt;
507 u32 time;
508 u32 scsi_id;
509 u32 lun;
510 u8 fmt;
511 u8 op_code;
512 u8 tmf_flags;
513 u8 type;
514#define IBMVFC_TRC_START 0x00
515#define IBMVFC_TRC_END 0xff
516 union {
517 struct ibmvfc_trace_start_entry start;
518 struct ibmvfc_trace_end_entry end;
519 } u;
520}__attribute__((packed, aligned (8)));
521
522enum ibmvfc_crq_formats {
523 IBMVFC_CMD_FORMAT = 0x01,
524 IBMVFC_ASYNC_EVENT = 0x02,
525 IBMVFC_MAD_FORMAT = 0x04,
526};
527
528enum ibmvfc_async_event {
529 IBMVFC_AE_ELS_PLOGI = 0x0001,
530 IBMVFC_AE_ELS_LOGO = 0x0002,
531 IBMVFC_AE_ELS_PRLO = 0x0004,
532 IBMVFC_AE_SCN_NPORT = 0x0008,
533 IBMVFC_AE_SCN_GROUP = 0x0010,
534 IBMVFC_AE_SCN_DOMAIN = 0x0020,
535 IBMVFC_AE_SCN_FABRIC = 0x0040,
536 IBMVFC_AE_LINK_UP = 0x0080,
537 IBMVFC_AE_LINK_DOWN = 0x0100,
538 IBMVFC_AE_LINK_DEAD = 0x0200,
539 IBMVFC_AE_HALT = 0x0400,
540 IBMVFC_AE_RESUME = 0x0800,
541 IBMVFC_AE_ADAPTER_FAILED = 0x1000,
542};
543
544struct ibmvfc_crq {
5919ce29
BK		 545 volatile u8 valid;
546 volatile u8 format;
072b91f9 547 u8 reserved[6];
5919ce29 548 volatile u64 ioba;
072b91f9
BK		 549}__attribute__((packed, aligned (8)));
550
551struct ibmvfc_crq_queue {
552 struct ibmvfc_crq *msgs;
553 int size, cur;
554 dma_addr_t msg_token;
555};
556
497f9c50
BK		 557enum ibmvfc_ae_link_state {
558 IBMVFC_AE_LS_LINK_UP = 0x01,
559 IBMVFC_AE_LS_LINK_BOUNCED = 0x02,
560 IBMVFC_AE_LS_LINK_DOWN = 0x04,
561 IBMVFC_AE_LS_LINK_DEAD = 0x08,
562};
563
072b91f9 564struct ibmvfc_async_crq {
5919ce29 565 volatile u8 valid;
497f9c50
BK		 566 u8 link_state;
567 u8 pad[2];
072b91f9 568 u32 pad2;
5919ce29
BK		 569 volatile u64 event;
570 volatile u64 scsi_id;
571 volatile u64 wwpn;
572 volatile u64 node_name;
072b91f9
BK		 573 u64 reserved;
574}__attribute__((packed, aligned (8)));
575
576struct ibmvfc_async_crq_queue {
577 struct ibmvfc_async_crq *msgs;
578 int size, cur;
579 dma_addr_t msg_token;
580};
581
582union ibmvfc_iu {
583 struct ibmvfc_mad_common mad_common;
584 struct ibmvfc_npiv_login_mad npiv_login;
79111d08 585 struct ibmvfc_npiv_logout_mad npiv_logout;
072b91f9
BK		 586 struct ibmvfc_discover_targets discover_targets;
587 struct ibmvfc_port_login plogi;
588 struct ibmvfc_process_login prli;
589 struct ibmvfc_query_tgt query_tgt;
590 struct ibmvfc_implicit_logout implicit_logout;
591 struct ibmvfc_tmf tmf;
592 struct ibmvfc_cmd cmd;
989b8545 593 struct ibmvfc_passthru_mad passthru;
072b91f9
BK		 594}__attribute__((packed, aligned (8)));
595
596enum ibmvfc_target_action {
597 IBMVFC_TGT_ACTION_NONE = 0,
598 IBMVFC_TGT_ACTION_INIT,
599 IBMVFC_TGT_ACTION_INIT_WAIT,
072b91f9 600 IBMVFC_TGT_ACTION_DEL_RPORT,
d5da3040 601 IBMVFC_TGT_ACTION_DELETED_RPORT,
072b91f9
BK		 602};
603
604struct ibmvfc_target {
605 struct list_head queue;
606 struct ibmvfc_host *vhost;
607 u64 scsi_id;
608 u64 new_scsi_id;
609 struct fc_rport *rport;
610 int target_id;
611 enum ibmvfc_target_action action;
612 int need_login;
43c8da90 613 int add_rport;
072b91f9 614 int init_retries;
017b2ae3 615 int logo_rcvd;
10501e1c 616 u32 cancel_key;
072b91f9
BK		 617 struct ibmvfc_service_parms service_parms;
618 struct ibmvfc_service_parms service_parms_change;
619 struct fc_rport_identifiers ids;
620 void (*job_step) (struct ibmvfc_target *);
10501e1c 621 struct timer_list timer;
072b91f9
BK		 622 struct kref kref;
623};
624
625/* a unit of work for the hosting partition */
626struct ibmvfc_event {
627 struct list_head queue;
628 struct ibmvfc_host *vhost;
629 struct ibmvfc_target *tgt;
630 struct scsi_cmnd *cmnd;
631 atomic_t free;
632 union ibmvfc_iu *xfer_iu;
633 void (*done) (struct ibmvfc_event *);
634 struct ibmvfc_crq crq;
635 union ibmvfc_iu iu;
636 union ibmvfc_iu *sync_iu;
637 struct srp_direct_buf *ext_list;
638 dma_addr_t ext_list_token;
639 struct completion comp;
ad8dcffa 640 struct completion *eh_comp;
072b91f9
BK		 641 struct timer_list timer;
642};
643
644/* a pool of event structs for use */
645struct ibmvfc_event_pool {
646 struct ibmvfc_event *events;
647 u32 size;
648 union ibmvfc_iu *iu_storage;
649 dma_addr_t iu_token;
650};
651
652enum ibmvfc_host_action {
653 IBMVFC_HOST_ACTION_NONE = 0,
73ee5d86
BK		 654 IBMVFC_HOST_ACTION_RESET,
655 IBMVFC_HOST_ACTION_REENABLE,
79111d08
BK		 656 IBMVFC_HOST_ACTION_LOGO,
657 IBMVFC_HOST_ACTION_LOGO_WAIT,
072b91f9
BK		 658 IBMVFC_HOST_ACTION_INIT,
659 IBMVFC_HOST_ACTION_INIT_WAIT,
660 IBMVFC_HOST_ACTION_QUERY,
661 IBMVFC_HOST_ACTION_QUERY_TGTS,
662 IBMVFC_HOST_ACTION_TGT_DEL,
663 IBMVFC_HOST_ACTION_ALLOC_TGTS,
664 IBMVFC_HOST_ACTION_TGT_INIT,
10e79499 665 IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
072b91f9
BK		 666};
667
668enum ibmvfc_host_state {
669 IBMVFC_NO_CRQ = 0,
670 IBMVFC_INITIALIZING,
671 IBMVFC_ACTIVE,
672 IBMVFC_HALTED,
673 IBMVFC_LINK_DOWN,
674 IBMVFC_LINK_DEAD,
675 IBMVFC_HOST_OFFLINE,
676};
677
678struct ibmvfc_host {
679 char name[8];
680 struct list_head queue;
681 struct Scsi_Host *host;
682 enum ibmvfc_host_state state;
683 enum ibmvfc_host_action action;
684#define IBMVFC_NUM_TRACE_INDEX_BITS 8
685#define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
686#define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
687 struct ibmvfc_trace_entry *trace;
688 u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
689 int num_targets;
690 struct list_head targets;
691 struct list_head sent;
692 struct list_head free;
693 struct device *dev;
694 struct ibmvfc_event_pool pool;
695 struct dma_pool *sg_pool;
696 mempool_t *tgt_pool;
697 struct ibmvfc_crq_queue crq;
698 struct ibmvfc_async_crq_queue async_crq;
699 struct ibmvfc_npiv_login login_info;
700 union ibmvfc_npiv_login_data *login_buf;
701 dma_addr_t login_buf_dma;
702 int disc_buf_sz;
703 int log_level;
704 struct ibmvfc_discover_targets_buf *disc_buf;
d31429e1 705 struct mutex passthru_mutex;
072b91f9
BK		 706 int task_set;
707 int init_retries;
708 int discovery_threads;
10501e1c 709 int abort_threads;
072b91f9
BK		 710 int client_migrated;
711 int reinit;
1c41fa82 712 int delay_init;
43c8da90 713 int scan_complete;
79111d08 714 int logged_in;
d31429e1 715 int aborting_passthru;
072b91f9
BK		 716 int events_to_log;
717#define IBMVFC_AE_LINKUP 0x0001
718#define IBMVFC_AE_LINKDOWN 0x0002
719#define IBMVFC_AE_RSCN 0x0004
720 dma_addr_t disc_buf_dma;
721 unsigned int partition_number;
722 char partition_name[97];
723 void (*job_step) (struct ibmvfc_host *);
724 struct task_struct *work_thread;
039a0898 725 struct tasklet_struct tasklet;
43c8da90 726 struct work_struct rport_add_work_q;
072b91f9
BK		 727 wait_queue_head_t init_wait_q;
728 wait_queue_head_t work_wait_q;
729};
730
731#define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
732
733#define tgt_dbg(t, fmt, ...) \
775a42ec 734 DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
072b91f9 735
989b8545 736#define tgt_info(t, fmt, ...) \
775a42ec 737 dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
989b8545 738
072b91f9 739#define tgt_err(t, fmt, ...) \
775a42ec 740 dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
072b91f9 741
7d0e4622
BK		 742#define tgt_log(t, level, fmt, ...) \
743 do { \
744 if ((t)->vhost->log_level >= level) \
745 tgt_err(t, fmt, ##__VA_ARGS__); \
746 } while (0)
747
072b91f9
BK		 748#define ibmvfc_dbg(vhost, ...) \
749 DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
750
751#define ibmvfc_log(vhost, level, ...) \
752 do { \
596891ac 753 if ((vhost)->log_level >= level) \
072b91f9
BK		 754 dev_err((vhost)->dev, ##__VA_ARGS__); \
755 } while (0)
756
cadbd4a5
HH		 757#define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
758#define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
072b91f9
BK		 759
760#ifdef CONFIG_SCSI_IBMVFC_TRACE
761#define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
762#define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
763#else
764#define ibmvfc_create_trace_file(kobj, attr) 0
765#define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
766#endif
767
768#endif
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