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