summaryrefslogtreecommitdiffstats
path: root/drivers/s390/scsi/zfcp_fsf.h
blob: 88feba5bfda433bf7dba59ef3ed2d09af73f596c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
/*
 * zfcp device driver
 *
 * Interface to the FSF support functions.
 *
 * Copyright IBM Corp. 2002, 2017
 */

#ifndef FSF_H
#define FSF_H

#include <linux/pfn.h>
#include <linux/scatterlist.h>
#include <scsi/libfc.h>

#define FSF_QTCB_CURRENT_VERSION		0x00000001

/* FSF commands */
#define	FSF_QTCB_FCP_CMND			0x00000001
#define	FSF_QTCB_ABORT_FCP_CMND			0x00000002
#define	FSF_QTCB_OPEN_PORT_WITH_DID		0x00000005
#define	FSF_QTCB_OPEN_LUN			0x00000006
#define	FSF_QTCB_CLOSE_LUN			0x00000007
#define	FSF_QTCB_CLOSE_PORT			0x00000008
#define	FSF_QTCB_CLOSE_PHYSICAL_PORT		0x00000009
#define	FSF_QTCB_SEND_ELS			0x0000000B
#define	FSF_QTCB_SEND_GENERIC			0x0000000C
#define	FSF_QTCB_EXCHANGE_CONFIG_DATA		0x0000000D
#define	FSF_QTCB_EXCHANGE_PORT_DATA		0x0000000E
#define FSF_QTCB_DOWNLOAD_CONTROL_FILE		0x00000012
#define FSF_QTCB_UPLOAD_CONTROL_FILE		0x00000013

/* FSF QTCB types */
#define FSF_IO_COMMAND				0x00000001
#define FSF_SUPPORT_COMMAND			0x00000002
#define FSF_CONFIG_COMMAND			0x00000003
#define FSF_PORT_COMMAND			0x00000004

/* FSF protocol states */
#define FSF_PROT_GOOD				0x00000001
#define FSF_PROT_QTCB_VERSION_ERROR		0x00000010
#define FSF_PROT_SEQ_NUMB_ERROR			0x00000020
#define FSF_PROT_UNSUPP_QTCB_TYPE		0x00000040
#define FSF_PROT_HOST_CONNECTION_INITIALIZING	0x00000080
#define FSF_PROT_FSF_STATUS_PRESENTED		0x00000100
#define FSF_PROT_DUPLICATE_REQUEST_ID		0x00000200
#define FSF_PROT_LINK_DOWN                      0x00000400
#define FSF_PROT_REEST_QUEUE                    0x00000800
#define FSF_PROT_ERROR_STATE			0x01000000

/* FSF states */
#define FSF_GOOD				0x00000000
#define FSF_PORT_ALREADY_OPEN			0x00000001
#define FSF_LUN_ALREADY_OPEN			0x00000002
#define FSF_PORT_HANDLE_NOT_VALID		0x00000003
#define FSF_LUN_HANDLE_NOT_VALID		0x00000004
#define FSF_HANDLE_MISMATCH			0x00000005
#define FSF_SERVICE_CLASS_NOT_SUPPORTED		0x00000006
#define FSF_FCPLUN_NOT_VALID			0x00000009
#define FSF_LUN_SHARING_VIOLATION               0x00000012
#define FSF_FCP_COMMAND_DOES_NOT_EXIST		0x00000022
#define FSF_DIRECTION_INDICATOR_NOT_VALID	0x00000030
#define FSF_CMND_LENGTH_NOT_VALID		0x00000033
#define FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED	0x00000040
#define FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED	0x00000041
#define FSF_ELS_COMMAND_REJECTED		0x00000050
#define FSF_GENERIC_COMMAND_REJECTED		0x00000051
#define FSF_PORT_BOXED				0x00000059
#define FSF_LUN_BOXED				0x0000005A
#define FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE	0x0000005B
#define FSF_PAYLOAD_SIZE_MISMATCH		0x00000060
#define FSF_REQUEST_SIZE_TOO_LARGE		0x00000061
#define FSF_RESPONSE_SIZE_TOO_LARGE		0x00000062
#define FSF_SBAL_MISMATCH			0x00000063
#define FSF_INCONSISTENT_PROT_DATA		0x00000070
#define FSF_INVALID_PROT_PARM			0x00000071
#define FSF_BLOCK_GUARD_CHECK_FAILURE		0x00000081
#define FSF_APP_TAG_CHECK_FAILURE		0x00000082
#define FSF_REF_TAG_CHECK_FAILURE		0x00000083
#define FSF_ADAPTER_STATUS_AVAILABLE		0x000000AD
#define FSF_FCP_RSP_AVAILABLE			0x000000AF
#define FSF_UNKNOWN_COMMAND			0x000000E2
#define FSF_UNKNOWN_OP_SUBTYPE                  0x000000E3
#define FSF_INVALID_COMMAND_OPTION              0x000000E5

#define FSF_PROT_STATUS_QUAL_SIZE		16
#define FSF_STATUS_QUALIFIER_SIZE		16

/* FSF status qualifier, recommendations */
#define FSF_SQ_NO_RECOM				0x00
#define FSF_SQ_FCP_RSP_AVAILABLE		0x01
#define FSF_SQ_RETRY_IF_POSSIBLE		0x02
#define FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED	0x03
#define FSF_SQ_INVOKE_LINK_TEST_PROCEDURE	0x04
#define FSF_SQ_COMMAND_ABORTED			0x06
#define FSF_SQ_NO_RETRY_POSSIBLE		0x07

/* FSF status qualifier (most significant 4 bytes), local link down */
#define FSF_PSQ_LINK_NO_LIGHT			0x00000004
#define FSF_PSQ_LINK_WRAP_PLUG			0x00000008
#define FSF_PSQ_LINK_NO_FCP			0x00000010
#define FSF_PSQ_LINK_FIRMWARE_UPDATE		0x00000020
#define FSF_PSQ_LINK_INVALID_WWPN		0x00000100
#define FSF_PSQ_LINK_NO_NPIV_SUPPORT		0x00000200
#define FSF_PSQ_LINK_NO_FCP_RESOURCES		0x00000400
#define FSF_PSQ_LINK_NO_FABRIC_RESOURCES	0x00000800
#define FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE	0x00001000
#define FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED	0x00002000
#define FSF_PSQ_LINK_MODE_TABLE_CURRUPTED	0x00004000
#define FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT		0x00008000

/* payload size in status read buffer */
#define FSF_STATUS_READ_PAYLOAD_SIZE		4032

/* number of status read buffers that should be sent by ULP */
#define FSF_STATUS_READS_RECOM			16

/* status types in status read buffer */
#define FSF_STATUS_READ_PORT_CLOSED		0x00000001
#define FSF_STATUS_READ_INCOMING_ELS		0x00000002
#define FSF_STATUS_READ_SENSE_DATA_AVAIL        0x00000003
#define FSF_STATUS_READ_BIT_ERROR_THRESHOLD	0x00000004
#define FSF_STATUS_READ_LINK_DOWN		0x00000005
#define FSF_STATUS_READ_LINK_UP          	0x00000006
#define FSF_STATUS_READ_NOTIFICATION_LOST	0x00000009
#define FSF_STATUS_READ_FEATURE_UPDATE_ALERT	0x0000000C

/* status subtypes for link down */
#define FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK	0x00000000
#define FSF_STATUS_READ_SUB_FDISC_FAILED	0x00000001
#define FSF_STATUS_READ_SUB_FIRMWARE_UPDATE	0x00000002

/* status subtypes for unsolicited status notification lost */
#define FSF_STATUS_READ_SUB_INCOMING_ELS	0x00000001

/* topologie that is detected by the adapter */
#define FSF_TOPO_P2P				0x00000001
#define FSF_TOPO_FABRIC				0x00000002
#define FSF_TOPO_AL				0x00000003

/* data direction for FCP commands */
#define FSF_DATADIR_WRITE			0x00000001
#define FSF_DATADIR_READ			0x00000002
#define FSF_DATADIR_CMND			0x00000004
#define FSF_DATADIR_DIF_WRITE_INSERT		0x00000009
#define FSF_DATADIR_DIF_READ_STRIP		0x0000000a
#define FSF_DATADIR_DIF_WRITE_CONVERT		0x0000000b
#define FSF_DATADIR_DIF_READ_CONVERT		0X0000000c

/* data protection control flags */
#define FSF_APP_TAG_CHECK_ENABLE		0x10

/* fc service class */
#define FSF_CLASS_3				0x00000003

/* logging space behind QTCB */
#define FSF_QTCB_LOG_SIZE			1024

/* channel features */
#define FSF_FEATURE_NOTIFICATION_LOST		0x00000008
#define FSF_FEATURE_HBAAPI_MANAGEMENT           0x00000010
#define FSF_FEATURE_ELS_CT_CHAINED_SBALS	0x00000020
#define FSF_FEATURE_UPDATE_ALERT		0x00000100
#define FSF_FEATURE_MEASUREMENT_DATA		0x00000200
#define FSF_FEATURE_DIF_PROT_TYPE1		0x00010000
#define FSF_FEATURE_DIX_PROT_TCPIP		0x00020000

/* host connection features */
#define FSF_FEATURE_NPIV_MODE			0x00000001

/* option */
#define FSF_OPEN_LUN_SUPPRESS_BOXING		0x00000001

struct fsf_queue_designator {
	u8  cssid;
	u8  chpid;
	u8  hla;
	u8  ua;
	u32 res1;
} __attribute__ ((packed));

struct fsf_bit_error_payload {
	u32 res1;
	u32 link_failure_error_count;
	u32 loss_of_sync_error_count;
	u32 loss_of_signal_error_count;
	u32 primitive_sequence_error_count;
	u32 invalid_transmission_word_error_count;
	u32 crc_error_count;
	u32 primitive_sequence_event_timeout_count;
	u32 elastic_buffer_overrun_error_count;
	u32 fcal_arbitration_timeout_count;
	u32 advertised_receive_b2b_credit;
	u32 current_receive_b2b_credit;
	u32 advertised_transmit_b2b_credit;
	u32 current_transmit_b2b_credit;
} __attribute__ ((packed));

struct fsf_link_down_info {
	u32 error_code;
	u32 res1;
	u8 res2[2];
	u8 primary_status;
	u8 ioerr_code;
	u8 action_code;
	u8 reason_code;
	u8 explanation_code;
	u8 vendor_specific_code;
} __attribute__ ((packed));

struct fsf_status_read_buffer {
	u32 status_type;
	u32 status_subtype;
	u32 length;
	u32 res1;
	struct fsf_queue_designator queue_designator;
	u8 res2;
	u8 d_id[3];
	u32 class;
	u64 fcp_lun;
	u8  res3[24];
	union {
		u8  data[FSF_STATUS_READ_PAYLOAD_SIZE];
		u32 word[FSF_STATUS_READ_PAYLOAD_SIZE/sizeof(u32)];
		struct fsf_link_down_info link_down_info;
		struct fsf_bit_error_payload bit_error;
	} payload;
} __attribute__ ((packed));

struct fsf_qual_version_error {
	u32 fsf_version;
	u32 res1[3];
} __attribute__ ((packed));

struct fsf_qual_sequence_error {
	u32 exp_req_seq_no;
	u32 res1[3];
} __attribute__ ((packed));

struct fsf_qual_latency_info {
	u32 channel_lat;
	u32 fabric_lat;
	u8 res1[8];
} __attribute__ ((packed));

union fsf_prot_status_qual {
	u32 word[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u32)];
	u64 doubleword[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u64)];
	struct fsf_qual_version_error   version_error;
	struct fsf_qual_sequence_error  sequence_error;
	struct fsf_link_down_info link_down_info;
	struct fsf_qual_latency_info latency_info;
} __attribute__ ((packed));

struct fsf_qtcb_prefix {
	u64 req_id;
	u32 qtcb_version;
	u32 ulp_info;
	u32 qtcb_type;
	u32 req_seq_no;
	u32 prot_status;
	union fsf_prot_status_qual prot_status_qual;
	u8  res1[20];
} __attribute__ ((packed));

struct fsf_statistics_info {
	u64 input_req;
	u64 output_req;
	u64 control_req;
	u64 input_mb;
	u64 output_mb;
	u64 seconds_act;
} __attribute__ ((packed));

union fsf_status_qual {
	u8  byte[FSF_STATUS_QUALIFIER_SIZE];
	u16 halfword[FSF_STATUS_QUALIFIER_SIZE / sizeof (u16)];
	u32 word[FSF_STATUS_QUALIFIER_SIZE / sizeof (u32)];
	u64 doubleword[FSF_STATUS_QUALIFIER_SIZE / sizeof(u64)];
	struct fsf_queue_designator fsf_queue_designator;
	struct fsf_link_down_info link_down_info;
} __attribute__ ((packed));

struct fsf_qtcb_header {
	u64 req_handle;
	u32 fsf_command;
	u32 res1;
	u32 port_handle;
	u32 lun_handle;
	u32 res2;
	u32 fsf_status;
	union fsf_status_qual fsf_status_qual;
	u8  res3[28];
	u16 log_start;
	u16 log_length;
	u8  res4[16];
} __attribute__ ((packed));

#define FSF_PLOGI_MIN_LEN	112

#define FSF_FCP_CMND_SIZE	288
#define FSF_FCP_RSP_SIZE	128

struct fsf_qtcb_bottom_io {
	u32 data_direction;
	u32 service_class;
	u8  res1;
	u8  data_prot_flags;
	u16 app_tag_value;
	u32 ref_tag_value;
	u32 fcp_cmnd_length;
	u32 data_block_length;
	u32 prot_data_length;
	u8  res2[4];
	union {
		u8		byte[FSF_FCP_CMND_SIZE];
		struct fcp_cmnd iu;
	}   fcp_cmnd;
	union {
		u8			 byte[FSF_FCP_RSP_SIZE];
		struct fcp_resp_with_ext iu;
	}   fcp_rsp;
	u8  res3[64];
} __attribute__ ((packed));

struct fsf_qtcb_bottom_support {
	u32 operation_subtype;
	u8  res1[13];
	u8 d_id[3];
	u32 option;
	u64 fcp_lun;
	u64 res2;
	u64 req_handle;
	u32 service_class;
	u8  res3[3];
	u8  timeout;
        u32 lun_access_info;
        u8  res4[180];
	u32 els1_length;
	u32 els2_length;
	u32 req_buf_length;
	u32 resp_buf_length;
	u8  els[256];
} __attribute__ ((packed));

#define ZFCP_FSF_TIMER_INT_MASK	0x3FFF

struct fsf_qtcb_bottom_config {
	u32 lic_version;
	u32 feature_selection;
	u32 high_qtcb_version;
	u32 low_qtcb_version;
	u32 max_qtcb_size;
	u32 max_data_transfer_size;
	u32 adapter_features;
	u32 connection_features;
	u32 fc_topology;
	u32 fc_link_speed;
	u32 adapter_type;
	u8 res0;
	u8 peer_d_id[3];
	u16 status_read_buf_num;
	u16 timer_interval;
	u8 res2[9];
	u8 s_id[3];
	u8 nport_serv_param[128];
	u8 res3[8];
	u32 adapter_ports;
	u32 hardware_version;
	u8 serial_number[32];
	u8 plogi_payload[112];
	struct fsf_statistics_info stat_info;
	u8 res4[112];
} __attribute__ ((packed));

struct fsf_qtcb_bottom_port {
	u64 wwpn;
	u32 fc_port_id;
	u32 port_type;
	u32 port_state;
	u32 class_of_service;	/* should be 0x00000006 for class 2 and 3 */
	u8 supported_fc4_types[32]; /* should be 0x00000100 for scsi fcp */
	u8 active_fc4_types[32];
	u32 supported_speed;	/* 0x0001 for 1 GBit/s or 0x0002 for 2 GBit/s */
	u32 maximum_frame_size;	/* fixed value of 2112 */
	u64 seconds_since_last_reset;
	u64 tx_frames;
	u64 tx_words;
	u64 rx_frames;
	u64 rx_words;
	u64 lip;		/* 0 */
	u64 nos;		/* currently 0 */
	u64 error_frames;	/* currently 0 */
	u64 dumped_frames;	/* currently 0 */
	u64 link_failure;
	u64 loss_of_sync;
	u64 loss_of_signal;
	u64 psp_error_counts;
	u64 invalid_tx_words;
	u64 invalid_crcs;
	u64 input_requests;
	u64 output_requests;
	u64 control_requests;
	u64 input_mb;		/* where 1 MByte == 1.000.000 Bytes */
	u64 output_mb;		/* where 1 MByte == 1.000.000 Bytes */
	u8 cp_util;
	u8 cb_util;
	u8 a_util;
	u8 res2[253];
} __attribute__ ((packed));

union fsf_qtcb_bottom {
	struct fsf_qtcb_bottom_io      io;
	struct fsf_qtcb_bottom_support support;
	struct fsf_qtcb_bottom_config  config;
	struct fsf_qtcb_bottom_port port;
};

struct fsf_qtcb {
	struct fsf_qtcb_prefix prefix;
	struct fsf_qtcb_header header;
	union  fsf_qtcb_bottom bottom;
	u8 log[FSF_QTCB_LOG_SIZE];
} __attribute__ ((packed));

struct zfcp_blk_drv_data {
#define ZFCP_BLK_DRV_DATA_MAGIC			0x1
	u32 magic;
#define ZFCP_BLK_LAT_VALID			0x1
#define ZFCP_BLK_REQ_ERROR			0x2
	u16 flags;
	u8 inb_usage;
	u8 outb_usage;
	u64 channel_lat;
	u64 fabric_lat;
} __attribute__ ((packed));

/**
 * struct zfcp_fsf_ct_els - zfcp data for ct or els request
 * @req: scatter-gather list for request
 * @resp: scatter-gather list for response
 * @handler: handler function (called for response to the request)
 * @handler_data: data passed to handler function
 * @port: Optional pointer to port for zfcp internal ELS (only test link ADISC)
 * @status: used to pass error status to calling function
 * @d_id: Destination ID of either open WKA port for CT or of D_ID for ELS
 */
struct zfcp_fsf_ct_els {
	struct scatterlist *req;
	struct scatterlist *resp;
	void (*handler)(void *);
	void *handler_data;
	struct zfcp_port *port;
	int status;
	u32 d_id;
};

#endif				/* FSF_H */