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[SCSI] ibmvfc: Delay NPIV login retry and add retries
[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"
67e6d58d
BK		 32#define IBMVFC_DRIVER_VERSION "1.0.4"
33#define IBMVFC_DRIVER_DATE "(November 14, 2008)"
072b91f9
BK		 34
35#define IBMVFC_DEFAULT_TIMEOUT 15
36#define IBMVFC_INIT_TIMEOUT 30
37#define IBMVFC_MAX_REQUESTS_DEFAULT 100
38
39#define IBMVFC_DEBUG 0
40#define IBMVFC_MAX_TARGETS 1024
41#define IBMVFC_MAX_LUN 0xffffffff
42#define IBMVFC_MAX_SECTORS 0xffffu
43#define IBMVFC_MAX_DISC_THREADS 4
44#define IBMVFC_TGT_MEMPOOL_SZ 64
45#define IBMVFC_MAX_CMDS_PER_LUN 64
1c41fa82
BK		 46#define IBMVFC_MAX_HOST_INIT_RETRIES 6
47#define IBMVFC_MAX_TGT_INIT_RETRIES 3
072b91f9
BK		 48#define IBMVFC_DEV_LOSS_TMO (5 * 60)
49#define IBMVFC_DEFAULT_LOG_LEVEL 2
50#define IBMVFC_MAX_CDB_LEN 16
51
52/*
53 * Ensure we have resources for ERP and initialization:
54 * 1 for ERP
55 * 1 for initialization
56 * 1 for each discovery thread
57 */
58#define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + disc_threads)
59
60#define IBMVFC_MAD_SUCCESS 0x00
61#define IBMVFC_MAD_NOT_SUPPORTED 0xF1
62#define IBMVFC_MAD_FAILED 0xF7
63#define IBMVFC_MAD_DRIVER_FAILED 0xEE
64#define IBMVFC_MAD_CRQ_ERROR 0xEF
65
66enum ibmvfc_crq_valid {
67 IBMVFC_CRQ_CMD_RSP = 0x80,
68 IBMVFC_CRQ_INIT_RSP = 0xC0,
69 IBMVFC_CRQ_XPORT_EVENT = 0xFF,
70};
71
72enum ibmvfc_crq_format {
73 IBMVFC_CRQ_INIT = 0x01,
74 IBMVFC_CRQ_INIT_COMPLETE = 0x02,
75 IBMVFC_PARTITION_MIGRATED = 0x06,
76};
77
78enum ibmvfc_cmd_status_flags {
79 IBMVFC_FABRIC_MAPPED = 0x0001,
80 IBMVFC_VIOS_FAILURE = 0x0002,
81 IBMVFC_FC_FAILURE = 0x0004,
82 IBMVFC_FC_SCSI_ERROR = 0x0008,
83 IBMVFC_HW_EVENT_LOGGED = 0x0010,
84 IBMVFC_VIOS_LOGGED = 0x0020,
85};
86
87enum ibmvfc_fabric_mapped_errors {
88 IBMVFC_UNABLE_TO_ESTABLISH = 0x0001,
89 IBMVFC_XPORT_FAULT = 0x0002,
90 IBMVFC_CMD_TIMEOUT = 0x0003,
91 IBMVFC_ENETDOWN = 0x0004,
92 IBMVFC_HW_FAILURE = 0x0005,
93 IBMVFC_LINK_DOWN_ERR = 0x0006,
94 IBMVFC_LINK_DEAD_ERR = 0x0007,
95 IBMVFC_UNABLE_TO_REGISTER = 0x0008,
96 IBMVFC_XPORT_BUSY = 0x000A,
97 IBMVFC_XPORT_DEAD = 0x000B,
98 IBMVFC_CONFIG_ERROR = 0x000C,
99 IBMVFC_NAME_SERVER_FAIL = 0x000D,
100 IBMVFC_LINK_HALTED = 0x000E,
101 IBMVFC_XPORT_GENERAL = 0x8000,
102};
103
104enum ibmvfc_vios_errors {
105 IBMVFC_CRQ_FAILURE = 0x0001,
106 IBMVFC_SW_FAILURE = 0x0002,
107 IBMVFC_INVALID_PARAMETER = 0x0003,
108 IBMVFC_MISSING_PARAMETER = 0x0004,
109 IBMVFC_HOST_IO_BUS = 0x0005,
110 IBMVFC_TRANS_CANCELLED = 0x0006,
111 IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
112 IBMVFC_INSUFFICIENT_RESOURCE = 0x0008,
646d3857 113 IBMVFC_PLOGI_REQUIRED = 0x0010,
072b91f9
BK		 114 IBMVFC_COMMAND_FAILED = 0x8000,
115};
116
117enum ibmvfc_mad_types {
118 IBMVFC_NPIV_LOGIN = 0x0001,
119 IBMVFC_DISC_TARGETS = 0x0002,
120 IBMVFC_PORT_LOGIN = 0x0004,
121 IBMVFC_PROCESS_LOGIN = 0x0008,
122 IBMVFC_QUERY_TARGET = 0x0010,
123 IBMVFC_IMPLICIT_LOGOUT = 0x0040,
989b8545 124 IBMVFC_PASSTHRU = 0x0200,
072b91f9
BK		 125 IBMVFC_TMF_MAD = 0x0100,
126};
127
128struct ibmvfc_mad_common {
129 u32 version;
130 u32 reserved;
131 u32 opcode;
132 u16 status;
133 u16 length;
134 u64 tag;
135}__attribute__((packed, aligned (8)));
136
137struct ibmvfc_npiv_login_mad {
138 struct ibmvfc_mad_common common;
139 struct srp_direct_buf buffer;
140}__attribute__((packed, aligned (8)));
141
142#define IBMVFC_MAX_NAME 256
143
144struct ibmvfc_npiv_login {
145 u32 ostype;
146#define IBMVFC_OS_LINUX 0x02
147 u32 pad;
148 u64 max_dma_len;
149 u32 max_payload;
150 u32 max_response;
151 u32 partition_num;
152 u32 vfc_frame_version;
153 u16 fcp_version;
154 u16 flags;
155#define IBMVFC_CLIENT_MIGRATED 0x01
156#define IBMVFC_FLUSH_ON_HALT 0x02
157 u32 max_cmds;
158 u64 capabilities;
159#define IBMVFC_CAN_MIGRATE 0x01
160 u64 node_name;
161 struct srp_direct_buf async;
162 u8 partition_name[IBMVFC_MAX_NAME];
163 u8 device_name[IBMVFC_MAX_NAME];
164 u8 drc_name[IBMVFC_MAX_NAME];
165 u64 reserved2[2];
166}__attribute__((packed, aligned (8)));
167
168struct ibmvfc_common_svc_parms {
169 u16 fcph_version;
170 u16 b2b_credit;
171 u16 features;
172 u16 bb_rcv_sz; /* upper nibble is BB_SC_N */
173 u32 ratov;
174 u32 edtov;
175}__attribute__((packed, aligned (4)));
176
177struct ibmvfc_service_parms {
178 struct ibmvfc_common_svc_parms common;
179 u8 port_name[8];
180 u8 node_name[8];
181 u32 class1_parms[4];
182 u32 class2_parms[4];
183 u32 class3_parms[4];
184 u32 obsolete[4];
185 u32 vendor_version[4];
186 u32 services_avail[2];
187 u32 ext_len;
188 u32 reserved[30];
189 u32 clk_sync_qos[2];
190}__attribute__((packed, aligned (4)));
191
192struct ibmvfc_npiv_login_resp {
193 u32 version;
194 u16 status;
195 u16 error;
196 u32 flags;
197#define IBMVFC_NATIVE_FC 0x01
198#define IBMVFC_CAN_FLUSH_ON_HALT 0x08
199 u32 reserved;
200 u64 capabilites;
201 u32 max_cmds;
202 u32 scsi_id_sz;
203 u64 max_dma_len;
204 u64 scsi_id;
205 u64 port_name;
206 u64 node_name;
207 u64 link_speed;
208 u8 partition_name[IBMVFC_MAX_NAME];
209 u8 device_name[IBMVFC_MAX_NAME];
210 u8 port_loc_code[IBMVFC_MAX_NAME];
211 u8 drc_name[IBMVFC_MAX_NAME];
212 struct ibmvfc_service_parms service_parms;
213 u64 reserved2;
214}__attribute__((packed, aligned (8)));
215
216union ibmvfc_npiv_login_data {
217 struct ibmvfc_npiv_login login;
218 struct ibmvfc_npiv_login_resp resp;
219}__attribute__((packed, aligned (8)));
220
221struct ibmvfc_discover_targets_buf {
222 u32 scsi_id[1];
223#define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff
224};
225
226struct ibmvfc_discover_targets {
227 struct ibmvfc_mad_common common;
228 struct srp_direct_buf buffer;
229 u32 flags;
230 u16 status;
231 u16 error;
232 u32 bufflen;
233 u32 num_avail;
234 u32 num_written;
235 u64 reserved[2];
236}__attribute__((packed, aligned (8)));
237
238enum ibmvfc_fc_reason {
239 IBMVFC_INVALID_ELS_CMD_CODE = 0x01,
240 IBMVFC_INVALID_VERSION = 0x02,
241 IBMVFC_LOGICAL_ERROR = 0x03,
242 IBMVFC_INVALID_CT_IU_SIZE = 0x04,
243 IBMVFC_LOGICAL_BUSY = 0x05,
244 IBMVFC_PROTOCOL_ERROR = 0x07,
245 IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09,
246 IBMVFC_CMD_NOT_SUPPORTED = 0x0B,
247 IBMVFC_SERVER_NOT_AVAIL = 0x0D,
248 IBMVFC_CMD_IN_PROGRESS = 0x0E,
249 IBMVFC_VENDOR_SPECIFIC = 0xFF,
250};
251
252enum ibmvfc_fc_type {
253 IBMVFC_FABRIC_REJECT = 0x01,
254 IBMVFC_PORT_REJECT = 0x02,
255 IBMVFC_LS_REJECT = 0x03,
256 IBMVFC_FABRIC_BUSY = 0x04,
257 IBMVFC_PORT_BUSY = 0x05,
258 IBMVFC_BASIC_REJECT = 0x06,
259};
260
261enum ibmvfc_gs_explain {
262 IBMVFC_PORT_NAME_NOT_REG = 0x02,
263};
264
265struct ibmvfc_port_login {
266 struct ibmvfc_mad_common common;
267 u64 scsi_id;
268 u16 reserved;
269 u16 fc_service_class;
270 u32 blksz;
271 u32 hdr_per_blk;
272 u16 status;
273 u16 error; /* also fc_reason */
274 u16 fc_explain;
275 u16 fc_type;
276 u32 reserved2;
277 struct ibmvfc_service_parms service_parms;
278 struct ibmvfc_service_parms service_parms_change;
279 u64 reserved3[2];
280}__attribute__((packed, aligned (8)));
281
282struct ibmvfc_prli_svc_parms {
283 u8 type;
284#define IBMVFC_SCSI_FCP_TYPE 0x08
285 u8 type_ext;
286 u16 flags;
287#define IBMVFC_PRLI_ORIG_PA_VALID 0x8000
288#define IBMVFC_PRLI_RESP_PA_VALID 0x4000
289#define IBMVFC_PRLI_EST_IMG_PAIR 0x2000
290 u32 orig_pa;
291 u32 resp_pa;
292 u32 service_parms;
293#define IBMVFC_PRLI_TASK_RETRY 0x00000200
294#define IBMVFC_PRLI_RETRY 0x00000100
295#define IBMVFC_PRLI_DATA_OVERLAY 0x00000040
296#define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020
297#define IBMVFC_PRLI_TARGET_FUNC 0x00000010
298#define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002
299#define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001
300}__attribute__((packed, aligned (4)));
301
302struct ibmvfc_process_login {
303 struct ibmvfc_mad_common common;
304 u64 scsi_id;
305 struct ibmvfc_prli_svc_parms parms;
306 u8 reserved[48];
307 u16 status;
308 u16 error; /* also fc_reason */
309 u32 reserved2;
310 u64 reserved3[2];
311}__attribute__((packed, aligned (8)));
312
313struct ibmvfc_query_tgt {
314 struct ibmvfc_mad_common common;
315 u64 wwpn;
316 u64 scsi_id;
317 u16 status;
318 u16 error;
319 u16 fc_explain;
320 u16 fc_type;
321 u64 reserved[2];
322}__attribute__((packed, aligned (8)));
323
324struct ibmvfc_implicit_logout {
325 struct ibmvfc_mad_common common;
326 u64 old_scsi_id;
327 u64 reserved[2];
328}__attribute__((packed, aligned (8)));
329
330struct ibmvfc_tmf {
331 struct ibmvfc_mad_common common;
332 u64 scsi_id;
333 struct scsi_lun lun;
334 u32 flags;
335#define IBMVFC_TMF_ABORT_TASK 0x02
336#define IBMVFC_TMF_ABORT_TASK_SET 0x04
337#define IBMVFC_TMF_LUN_RESET 0x10
338#define IBMVFC_TMF_TGT_RESET 0x20
339#define IBMVFC_TMF_LUA_VALID 0x40
340 u32 cancel_key;
341 u32 my_cancel_key;
072b91f9
BK		 342 u32 pad;
343 u64 reserved[2];
344}__attribute__((packed, aligned (8)));
345
346enum ibmvfc_fcp_rsp_info_codes {
347 RSP_NO_FAILURE = 0x00,
348 RSP_TMF_REJECTED = 0x04,
349 RSP_TMF_FAILED = 0x05,
350 RSP_TMF_INVALID_LUN = 0x09,
351};
352
353struct ibmvfc_fcp_rsp_info {
354 u16 reserved;
355 u8 rsp_code;
356 u8 reserved2[4];
357}__attribute__((packed, aligned (2)));
358
359enum ibmvfc_fcp_rsp_flags {
360 FCP_BIDI_RSP = 0x80,
361 FCP_BIDI_READ_RESID_UNDER = 0x40,
362 FCP_BIDI_READ_RESID_OVER = 0x20,
363 FCP_CONF_REQ = 0x10,
364 FCP_RESID_UNDER = 0x08,
365 FCP_RESID_OVER = 0x04,
366 FCP_SNS_LEN_VALID = 0x02,
367 FCP_RSP_LEN_VALID = 0x01,
368};
369
370union ibmvfc_fcp_rsp_data {
371 struct ibmvfc_fcp_rsp_info info;
372 u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
373}__attribute__((packed, aligned (8)));
374
375struct ibmvfc_fcp_rsp {
376 u64 reserved;
377 u16 retry_delay_timer;
378 u8 flags;
379 u8 scsi_status;
380 u32 fcp_resid;
381 u32 fcp_sense_len;
382 u32 fcp_rsp_len;
383 union ibmvfc_fcp_rsp_data data;
384}__attribute__((packed, aligned (8)));
385
386enum ibmvfc_cmd_flags {
387 IBMVFC_SCATTERLIST = 0x0001,
388 IBMVFC_NO_MEM_DESC = 0x0002,
389 IBMVFC_READ = 0x0004,
390 IBMVFC_WRITE = 0x0008,
391 IBMVFC_TMF = 0x0080,
392 IBMVFC_CLASS_3_ERR = 0x0100,
393};
394
395enum ibmvfc_fc_task_attr {
396 IBMVFC_SIMPLE_TASK = 0x00,
397 IBMVFC_HEAD_OF_QUEUE = 0x01,
398 IBMVFC_ORDERED_TASK = 0x02,
399 IBMVFC_ACA_TASK = 0x04,
400};
401
402enum ibmvfc_fc_tmf_flags {
403 IBMVFC_ABORT_TASK_SET = 0x02,
404 IBMVFC_LUN_RESET = 0x10,
405 IBMVFC_TARGET_RESET = 0x20,
406};
407
408struct ibmvfc_fcp_cmd_iu {
409 struct scsi_lun lun;
410 u8 crn;
411 u8 pri_task_attr;
412 u8 tmf_flags;
413 u8 add_cdb_len;
414#define IBMVFC_RDDATA 0x02
415#define IBMVFC_WRDATA 0x01
416 u8 cdb[IBMVFC_MAX_CDB_LEN];
417 u32 xfer_len;
418}__attribute__((packed, aligned (4)));
419
420struct ibmvfc_cmd {
421 u64 task_tag;
422 u32 frame_type;
423 u32 payload_len;
424 u32 resp_len;
425 u32 adapter_resid;
426 u16 status;
427 u16 error;
428 u16 flags;
429 u16 response_flags;
430#define IBMVFC_ADAPTER_RESID_VALID 0x01
431 u32 cancel_key;
432 u32 exchange_id;
433 struct srp_direct_buf ext_func;
434 struct srp_direct_buf ioba;
435 struct srp_direct_buf resp;
436 u64 correlation;
437 u64 tgt_scsi_id;
438 u64 tag;
439 u64 reserved3[2];
440 struct ibmvfc_fcp_cmd_iu iu;
441 struct ibmvfc_fcp_rsp rsp;
442}__attribute__((packed, aligned (8)));
443
989b8545
BK		 444struct ibmvfc_passthru_fc_iu {
445 u32 payload[7];
446#define IBMVFC_ADISC 0x52000000
447 u32 response[7];
448};
449
450struct ibmvfc_passthru_iu {
451 u64 task_tag;
452 u32 cmd_len;
453 u32 rsp_len;
454 u16 status;
455 u16 error;
456 u32 flags;
457#define IBMVFC_FC_ELS 0x01
458 u32 cancel_key;
459 u32 reserved;
460 struct srp_direct_buf cmd;
461 struct srp_direct_buf rsp;
462 u64 correlation;
463 u64 scsi_id;
464 u64 tag;
465 u64 reserved2[2];
466}__attribute__((packed, aligned (8)));
467
468struct ibmvfc_passthru_mad {
469 struct ibmvfc_mad_common common;
470 struct srp_direct_buf cmd_ioba;
471 struct ibmvfc_passthru_iu iu;
472 struct ibmvfc_passthru_fc_iu fc_iu;
473}__attribute__((packed, aligned (8)));
474
072b91f9
BK		 475struct ibmvfc_trace_start_entry {
476 u32 xfer_len;
477}__attribute__((packed));
478
479struct ibmvfc_trace_end_entry {
480 u16 status;
481 u16 error;
482 u8 fcp_rsp_flags;
483 u8 rsp_code;
484 u8 scsi_status;
485 u8 reserved;
486}__attribute__((packed));
487
488struct ibmvfc_trace_entry {
489 struct ibmvfc_event *evt;
490 u32 time;
491 u32 scsi_id;
492 u32 lun;
493 u8 fmt;
494 u8 op_code;
495 u8 tmf_flags;
496 u8 type;
497#define IBMVFC_TRC_START 0x00
498#define IBMVFC_TRC_END 0xff
499 union {
500 struct ibmvfc_trace_start_entry start;
501 struct ibmvfc_trace_end_entry end;
502 } u;
503}__attribute__((packed, aligned (8)));
504
505enum ibmvfc_crq_formats {
506 IBMVFC_CMD_FORMAT = 0x01,
507 IBMVFC_ASYNC_EVENT = 0x02,
508 IBMVFC_MAD_FORMAT = 0x04,
509};
510
511enum ibmvfc_async_event {
512 IBMVFC_AE_ELS_PLOGI = 0x0001,
513 IBMVFC_AE_ELS_LOGO = 0x0002,
514 IBMVFC_AE_ELS_PRLO = 0x0004,
515 IBMVFC_AE_SCN_NPORT = 0x0008,
516 IBMVFC_AE_SCN_GROUP = 0x0010,
517 IBMVFC_AE_SCN_DOMAIN = 0x0020,
518 IBMVFC_AE_SCN_FABRIC = 0x0040,
519 IBMVFC_AE_LINK_UP = 0x0080,
520 IBMVFC_AE_LINK_DOWN = 0x0100,
521 IBMVFC_AE_LINK_DEAD = 0x0200,
522 IBMVFC_AE_HALT = 0x0400,
523 IBMVFC_AE_RESUME = 0x0800,
524 IBMVFC_AE_ADAPTER_FAILED = 0x1000,
525};
526
527struct ibmvfc_crq {
5919ce29
BK		 528 volatile u8 valid;
529 volatile u8 format;
072b91f9 530 u8 reserved[6];
5919ce29 531 volatile u64 ioba;
072b91f9
BK		 532}__attribute__((packed, aligned (8)));
533
534struct ibmvfc_crq_queue {
535 struct ibmvfc_crq *msgs;
536 int size, cur;
537 dma_addr_t msg_token;
538};
539
540struct ibmvfc_async_crq {
5919ce29 541 volatile u8 valid;
072b91f9
BK		 542 u8 pad[3];
543 u32 pad2;
5919ce29
BK		 544 volatile u64 event;
545 volatile u64 scsi_id;
546 volatile u64 wwpn;
547 volatile u64 node_name;
072b91f9
BK		 548 u64 reserved;
549}__attribute__((packed, aligned (8)));
550
551struct ibmvfc_async_crq_queue {
552 struct ibmvfc_async_crq *msgs;
553 int size, cur;
554 dma_addr_t msg_token;
555};
556
557union ibmvfc_iu {
558 struct ibmvfc_mad_common mad_common;
559 struct ibmvfc_npiv_login_mad npiv_login;
560 struct ibmvfc_discover_targets discover_targets;
561 struct ibmvfc_port_login plogi;
562 struct ibmvfc_process_login prli;
563 struct ibmvfc_query_tgt query_tgt;
564 struct ibmvfc_implicit_logout implicit_logout;
565 struct ibmvfc_tmf tmf;
566 struct ibmvfc_cmd cmd;
989b8545 567 struct ibmvfc_passthru_mad passthru;
072b91f9
BK		 568}__attribute__((packed, aligned (8)));
569
570enum ibmvfc_target_action {
571 IBMVFC_TGT_ACTION_NONE = 0,
572 IBMVFC_TGT_ACTION_INIT,
573 IBMVFC_TGT_ACTION_INIT_WAIT,
574 IBMVFC_TGT_ACTION_ADD_RPORT,
575 IBMVFC_TGT_ACTION_DEL_RPORT,
576};
577
578struct ibmvfc_target {
579 struct list_head queue;
580 struct ibmvfc_host *vhost;
581 u64 scsi_id;
582 u64 new_scsi_id;
583 struct fc_rport *rport;
584 int target_id;
585 enum ibmvfc_target_action action;
586 int need_login;
587 int init_retries;
588 struct ibmvfc_service_parms service_parms;
589 struct ibmvfc_service_parms service_parms_change;
590 struct fc_rport_identifiers ids;
591 void (*job_step) (struct ibmvfc_target *);
592 struct kref kref;
593};
594
595/* a unit of work for the hosting partition */
596struct ibmvfc_event {
597 struct list_head queue;
598 struct ibmvfc_host *vhost;
599 struct ibmvfc_target *tgt;
600 struct scsi_cmnd *cmnd;
601 atomic_t free;
602 union ibmvfc_iu *xfer_iu;
603 void (*done) (struct ibmvfc_event *);
604 struct ibmvfc_crq crq;
605 union ibmvfc_iu iu;
606 union ibmvfc_iu *sync_iu;
607 struct srp_direct_buf *ext_list;
608 dma_addr_t ext_list_token;
609 struct completion comp;
ad8dcffa 610 struct completion *eh_comp;
072b91f9
BK		 611 struct timer_list timer;
612};
613
614/* a pool of event structs for use */
615struct ibmvfc_event_pool {
616 struct ibmvfc_event *events;
617 u32 size;
618 union ibmvfc_iu *iu_storage;
619 dma_addr_t iu_token;
620};
621
622enum ibmvfc_host_action {
623 IBMVFC_HOST_ACTION_NONE = 0,
624 IBMVFC_HOST_ACTION_INIT,
625 IBMVFC_HOST_ACTION_INIT_WAIT,
626 IBMVFC_HOST_ACTION_QUERY,
627 IBMVFC_HOST_ACTION_QUERY_TGTS,
628 IBMVFC_HOST_ACTION_TGT_DEL,
629 IBMVFC_HOST_ACTION_ALLOC_TGTS,
630 IBMVFC_HOST_ACTION_TGT_INIT,
10e79499 631 IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
072b91f9
BK		 632 IBMVFC_HOST_ACTION_TGT_ADD,
633};
634
635enum ibmvfc_host_state {
636 IBMVFC_NO_CRQ = 0,
637 IBMVFC_INITIALIZING,
638 IBMVFC_ACTIVE,
639 IBMVFC_HALTED,
640 IBMVFC_LINK_DOWN,
641 IBMVFC_LINK_DEAD,
642 IBMVFC_HOST_OFFLINE,
643};
644
645struct ibmvfc_host {
646 char name[8];
647 struct list_head queue;
648 struct Scsi_Host *host;
649 enum ibmvfc_host_state state;
650 enum ibmvfc_host_action action;
651#define IBMVFC_NUM_TRACE_INDEX_BITS 8
652#define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
653#define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
654 struct ibmvfc_trace_entry *trace;
655 u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
656 int num_targets;
657 struct list_head targets;
658 struct list_head sent;
659 struct list_head free;
660 struct device *dev;
661 struct ibmvfc_event_pool pool;
662 struct dma_pool *sg_pool;
663 mempool_t *tgt_pool;
664 struct ibmvfc_crq_queue crq;
665 struct ibmvfc_async_crq_queue async_crq;
666 struct ibmvfc_npiv_login login_info;
667 union ibmvfc_npiv_login_data *login_buf;
668 dma_addr_t login_buf_dma;
669 int disc_buf_sz;
670 int log_level;
671 struct ibmvfc_discover_targets_buf *disc_buf;
672 int task_set;
673 int init_retries;
674 int discovery_threads;
675 int client_migrated;
676 int reinit;
1c41fa82 677 int delay_init;
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BK		 678 int events_to_log;
679#define IBMVFC_AE_LINKUP 0x0001
680#define IBMVFC_AE_LINKDOWN 0x0002
681#define IBMVFC_AE_RSCN 0x0004
682 dma_addr_t disc_buf_dma;
683 unsigned int partition_number;
684 char partition_name[97];
685 void (*job_step) (struct ibmvfc_host *);
686 struct task_struct *work_thread;
687 wait_queue_head_t init_wait_q;
688 wait_queue_head_t work_wait_q;
689};
690
691#define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
692
693#define tgt_dbg(t, fmt, ...) \
694 DBG_CMD(dev_info((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
695
989b8545
BK		 696#define tgt_info(t, fmt, ...) \
697 dev_info((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
698
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BK		 699#define tgt_err(t, fmt, ...) \
700 dev_err((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
701
702#define ibmvfc_dbg(vhost, ...) \
703 DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
704
705#define ibmvfc_log(vhost, level, ...) \
706 do { \
596891ac 707 if ((vhost)->log_level >= level) \
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BK		 708 dev_err((vhost)->dev, ##__VA_ARGS__); \
709 } while (0)
710
cadbd4a5
HH		 711#define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
712#define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
072b91f9
BK		 713
714#ifdef CONFIG_SCSI_IBMVFC_TRACE
715#define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
716#define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
717#else
718#define ibmvfc_create_trace_file(kobj, attr) 0
719#define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
720#endif
721
722#endif
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