summaryrefslogtreecommitdiff
path: root/drivers/scsi/bfa/include/bfi/bfi_fcpim.h
blob: 52c059fb4c3a6b50b1737bb6baf234aa5e5f6aeb (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
/*
 * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
 * All rights reserved
 * www.brocade.com
 *
 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License (GPL) Version 2 as
 * published by the Free Software Foundation
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#ifndef __BFI_FCPIM_H__
#define __BFI_FCPIM_H__

#include "bfi.h"
#include <protocol/fcp.h>

#pragma pack(1)

/*
 * Initiator mode I-T nexus interface defines.
 */

enum bfi_itnim_h2i {
	BFI_ITNIM_H2I_CREATE_REQ = 1,	/*  i-t nexus creation */
	BFI_ITNIM_H2I_DELETE_REQ = 2,	/*  i-t nexus deletion */
};

enum bfi_itnim_i2h {
	BFI_ITNIM_I2H_CREATE_RSP = BFA_I2HM(1),
	BFI_ITNIM_I2H_DELETE_RSP = BFA_I2HM(2),
	BFI_ITNIM_I2H_SLER_EVENT = BFA_I2HM(3),
};

struct bfi_itnim_create_req_s {
	struct bfi_mhdr_s  mh;		/*  common msg header		 */
	u16        fw_handle;	/*  f/w handle for itnim	 */
	u8         class;		/*  FC class for IO		 */
	u8         seq_rec;	/*  sequence recovery support	 */
	u8         msg_no;		/*  seq id of the msg		 */
};

struct bfi_itnim_create_rsp_s {
	struct bfi_mhdr_s  mh;		/*  common msg header		 */
	u16        bfa_handle;	/*  bfa handle for itnim	 */
	u8         status;		/*  fcp request status		 */
	u8         seq_id;		/*  seq id of the msg		 */
};

struct bfi_itnim_delete_req_s {
	struct bfi_mhdr_s  mh;		/*  common msg header		 */
	u16        fw_handle;	/*  f/w itnim handle		 */
	u8         seq_id;		/*  seq id of the msg		 */
	u8         rsvd;
};

struct bfi_itnim_delete_rsp_s {
	struct bfi_mhdr_s  mh;		/*  common msg header		 */
	u16        bfa_handle;	/*  bfa handle for itnim	 */
	u8         status;		/*  fcp request status		 */
	u8         seq_id;		/*  seq id of the msg		 */
};

struct bfi_itnim_sler_event_s {
	struct bfi_mhdr_s  mh;		/*  common msg header		 */
	u16        bfa_handle;	/*  bfa handle for itnim	 */
	u16        rsvd;
};

union bfi_itnim_h2i_msg_u {
	struct bfi_itnim_create_req_s *create_req;
	struct bfi_itnim_delete_req_s *delete_req;
	struct bfi_msg_s      *msg;
};

union bfi_itnim_i2h_msg_u {
	struct bfi_itnim_create_rsp_s *create_rsp;
	struct bfi_itnim_delete_rsp_s *delete_rsp;
	struct bfi_itnim_sler_event_s *sler_event;
	struct bfi_msg_s      *msg;
};

/*
 * Initiator mode IO interface defines.
 */

enum bfi_ioim_h2i {
	BFI_IOIM_H2I_IOABORT_REQ = 1,	/*  IO abort request	 */
	BFI_IOIM_H2I_IOCLEANUP_REQ = 2,	/*  IO cleanup request	 */
};

enum bfi_ioim_i2h {
	BFI_IOIM_I2H_IO_RSP = BFA_I2HM(1),	/*  non-fp IO response	 */
	BFI_IOIM_I2H_IOABORT_RSP = BFA_I2HM(2),/*  ABORT rsp	 */
};

/**
 * IO command DIF info
 */
struct bfi_ioim_dif_s {
	u32	dif_info[4];
};

/**
 * FCP IO messages overview
 *
 * @note
 * - Max CDB length supported is 64 bytes.
 * - SCSI Linked commands and SCSI bi-directional Commands not
 * 	 supported.
 *
 */
struct bfi_ioim_req_s {
	struct bfi_mhdr_s  mh;		/*  Common msg header		 */
	u16        io_tag;		/*  I/O tag			 */
	u16        rport_hdl;	/*  itnim/rport firmware handle */
	struct fcp_cmnd_s cmnd;		/*  IO request info		 */

	/**
	 * SG elements array within the IO request must be double word
	 * aligned. This aligment is required to optimize SGM setup for the IO.
	 */
	struct bfi_sge_s   sges[BFI_SGE_INLINE_MAX];
	u8         io_timeout;
	u8         dif_en;
	u8         rsvd_a[2];
	struct bfi_ioim_dif_s  dif;
};

/**
 * 	This table shows various IO status codes from firmware and their
 *	meaning. Host driver can use these status codes to further process
 *	IO completions.
 *
 * 	BFI_IOIM_STS_OK		: IO completed with error free SCSI &
 *					   transport status.
 * 					   - io-tag can be reused.
 *
 * 	BFA_IOIM_STS_SCSI_ERR		: IO completed with scsi error.
 * 					  - io-tag can be reused.
 *
 * 	BFI_IOIM_STS_HOST_ABORTED	: IO was aborted successfully due to
 *					   host request.
 * 					   - io-tag cannot be reused yet.
 *
 * 	BFI_IOIM_STS_ABORTED		: IO was aborted successfully
 *					   internally by f/w.
 * 					   - io-tag cannot be reused yet.
 *
 * 	BFI_IOIM_STS_TIMEDOUT	: IO timedout and ABTS/RRQ is happening
 *					   in the firmware and
 * 					   - io-tag cannot be reused yet.
 *
 * 	BFI_IOIM_STS_SQER_NEEDED	: Firmware could not recover the IO
 *					  with sequence level error
 * 					  logic and hence host needs to retry
 *					  this IO with a different IO tag
 * 					  - io-tag cannot be used yet.
 *
 * 	BFI_IOIM_STS_NEXUS_ABORT	: Second Level Error Recovery from host
 *					  is required because 2 consecutive ABTS
 *					  timedout and host needs logout and
 *					  re-login with the target
 * 					  - io-tag cannot be used yet.
 *
 * 	BFI_IOIM_STS_UNDERRUN	: IO completed with SCSI status good,
 *					  but the data tranferred is less than
 *					  the fcp data length in the command.
 *					  ex. SCSI INQUIRY where transferred
 *					  data length and residue count in FCP
 *					  response accounts for total fcp-dl
 * 					  - io-tag can be reused.
 *
 * 	BFI_IOIM_STS_OVERRUN	: IO completed with SCSI status good,
 *					  but the data transerred is more than
 *					  fcp data length in the command. ex.
 *					  TAPE IOs where blocks can of unequal
 *					  lengths.
 * 					  - io-tag can be reused.
 *
 * 	BFI_IOIM_STS_RES_FREE	: Firmware has completed using io-tag
 *					  during abort process
 * 					  - io-tag can be reused.
 *
 * 	BFI_IOIM_STS_PROTO_ERR	: Firmware detected a protocol error.
 *					  ex target sent more data than
 *					  requested, or there was data frame
 *					  loss and other reasons
 * 					  - io-tag cannot be used yet.
 *
 * 	BFI_IOIM_STS_DIF_ERR	: Firwmare detected DIF error. ex: DIF
 * 					  CRC err or Ref Tag err or App tag err.
 * 					  - io-tag can be reused.
 *
 * 	BFA_IOIM_STS_TSK_MGT_ABORT	: IO was aborted because of Task
 *					  Management command from the host
 * 					  - io-tag can be reused.
 *
 * 	BFI_IOIM_STS_UTAG		: Firmware does not know about this
 *					  io_tag.
 * 					  - io-tag can be reused.
 */
enum bfi_ioim_status {
	BFI_IOIM_STS_OK = 0,
	BFI_IOIM_STS_HOST_ABORTED = 1,
	BFI_IOIM_STS_ABORTED = 2,
	BFI_IOIM_STS_TIMEDOUT = 3,
	BFI_IOIM_STS_RES_FREE = 4,
	BFI_IOIM_STS_SQER_NEEDED = 5,
	BFI_IOIM_STS_PROTO_ERR = 6,
	BFI_IOIM_STS_UTAG = 7,
	BFI_IOIM_STS_PATHTOV = 8,
};

#define BFI_IOIM_SNSLEN	(256)
/**
 * I/O response message
 */
struct bfi_ioim_rsp_s {
	struct bfi_mhdr_s  mh;		/*  common msg header	 	 */
	u16        io_tag;		/*  completed IO tag		 */
	u16        bfa_rport_hndl;	/*  releated rport handle	 */
	u8         io_status;	/*  IO completion status	 */
	u8         reuse_io_tag;	/*  IO tag can be reused        */
	u16	abort_tag;	/*  host abort request tag      */
	u8		scsi_status;	/*  scsi status from target	 */
	u8		sns_len;	/*  scsi sense length		 */
	u8		resid_flags;	/*  IO residue flags		 */
	u8		rsvd_a;
	u32	residue;	/*  IO residual length in bytes */
	u32	rsvd_b[3];
};

struct bfi_ioim_abort_req_s {
	struct bfi_mhdr_s  mh;          /*  Common msg header  */
	u16        io_tag;         /*  I/O tag            */
	u16        abort_tag;      /*  unique request tag */
};

/*
 * Initiator mode task management command interface defines.
 */

enum bfi_tskim_h2i {
	BFI_TSKIM_H2I_TM_REQ    = 1, /*  task-mgmt command         */
	BFI_TSKIM_H2I_ABORT_REQ = 2, /*  task-mgmt command         */
};

enum bfi_tskim_i2h {
	BFI_TSKIM_I2H_TM_RSP = BFA_I2HM(1),
};

struct bfi_tskim_req_s {
	struct bfi_mhdr_s  mh;             /*  Common msg header          */
	u16        tsk_tag;        /*  task management tag        */
	u16        itn_fhdl;       /*  itn firmware handle        */
	lun_t           lun;            /*  LU number                  */
	u8         tm_flags;       /*  see fcp_tm_cmnd_t          */
	u8         t_secs;         /*  Timeout value in seconds   */
	u8         rsvd[2];
};

struct bfi_tskim_abortreq_s {
	struct bfi_mhdr_s  mh;             /*  Common msg header          */
	u16        tsk_tag;        /*  task management tag        */
	u16        rsvd;
};

enum bfi_tskim_status {
	/*
	 * Following are FCP-4 spec defined status codes,
	 * **DO NOT CHANGE THEM **
	 */
	BFI_TSKIM_STS_OK       = 0,
	BFI_TSKIM_STS_NOT_SUPP = 4,
	BFI_TSKIM_STS_FAILED   = 5,

	/**
	 * Defined by BFA
	 */
	BFI_TSKIM_STS_TIMEOUT  = 10,    /*  TM request timedout     */
	BFI_TSKIM_STS_ABORTED  = 11,    /*  Aborted on host request */
};

struct bfi_tskim_rsp_s {
	struct bfi_mhdr_s  mh;		/*  Common msg header		 */
	u16        tsk_tag;	/*  task mgmt cmnd tag		 */
	u8         tsk_status;	/*  @ref bfi_tskim_status */
	u8         rsvd;
};

#pragma pack()

#endif /* __BFI_FCPIM_H__ */