summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/qedf/qedf_hsi.h
blob: f6f634e48d692193e380772e13eb637d8fd9c8d8 (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
/*
 *  QLogic FCoE Offload Driver
 *  Copyright (c) 2016-2018 Cavium Inc.
 *
 *  This software is available under the terms of the GNU General Public License
 *  (GPL) Version 2, available from the file COPYING in the main directory of
 *  this source tree.
 */
#ifndef __QEDF_HSI__
#define __QEDF_HSI__
/*
 * Add include to common target
 */
#include <linux/qed/common_hsi.h>

/*
 * Add include to common storage target
 */
#include <linux/qed/storage_common.h>

/*
 * Add include to common fcoe target for both eCore and protocol driver
 */
#include <linux/qed/fcoe_common.h>


/*
 * FCoE CQ element ABTS information
 */
struct fcoe_abts_info {
	u8 r_ctl /* R_CTL in the ABTS response frame */;
	u8 reserved0;
	__le16 rx_id;
	__le32 reserved2[2];
	__le32 fc_payload[3] /* ABTS FC payload response frame */;
};


/*
 * FCoE class type
 */
enum fcoe_class_type {
	FCOE_TASK_CLASS_TYPE_3,
	FCOE_TASK_CLASS_TYPE_2,
	MAX_FCOE_CLASS_TYPE
};


/*
 * FCoE CMDQ element control information
 */
struct fcoe_cmdqe_control {
	__le16 conn_id;
	u8 num_additional_cmdqes;
	u8 cmdType;
	/* true for ABTS request cmdqe. used in Target mode */
#define FCOE_CMDQE_CONTROL_ABTSREQCMD_MASK  0x1
#define FCOE_CMDQE_CONTROL_ABTSREQCMD_SHIFT 0
#define FCOE_CMDQE_CONTROL_RESERVED1_MASK   0x7F
#define FCOE_CMDQE_CONTROL_RESERVED1_SHIFT  1
	u8 reserved2[4];
};

/*
 * FCoE control + payload CMDQ element
 */
struct fcoe_cmdqe {
	struct fcoe_cmdqe_control hdr;
	u8 fc_header[24];
	__le32 fcp_cmd_payload[8];
};



/*
 * FCP RSP flags
 */
struct fcoe_fcp_rsp_flags {
	u8 flags;
#define FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID_MASK  0x1
#define FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID_SHIFT 0
#define FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID_MASK  0x1
#define FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID_SHIFT 1
#define FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER_MASK     0x1
#define FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER_SHIFT    2
#define FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER_MASK    0x1
#define FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER_SHIFT   3
#define FCOE_FCP_RSP_FLAGS_FCP_CONF_REQ_MASK       0x1
#define FCOE_FCP_RSP_FLAGS_FCP_CONF_REQ_SHIFT      4
#define FCOE_FCP_RSP_FLAGS_FCP_BIDI_FLAGS_MASK     0x7
#define FCOE_FCP_RSP_FLAGS_FCP_BIDI_FLAGS_SHIFT    5
};

/*
 * FCoE CQ element response information
 */
struct fcoe_cqe_rsp_info {
	struct fcoe_fcp_rsp_flags rsp_flags;
	u8 scsi_status_code;
	__le16 retry_delay_timer;
	__le32 fcp_resid;
	__le32 fcp_sns_len;
	__le32 fcp_rsp_len;
	__le16 rx_id;
	u8 fw_error_flags;
#define FCOE_CQE_RSP_INFO_FW_UNDERRUN_MASK  0x1 /* FW detected underrun */
#define FCOE_CQE_RSP_INFO_FW_UNDERRUN_SHIFT 0
#define FCOE_CQE_RSP_INFO_RESREVED_MASK     0x7F
#define FCOE_CQE_RSP_INFO_RESREVED_SHIFT    1
	u8 reserved;
	__le32 fw_residual /* Residual bytes calculated by FW */;
};

/*
 * FCoE CQ element Target completion information
 */
struct fcoe_cqe_target_info {
	__le16 rx_id;
	__le16 reserved0;
	__le32 reserved1[5];
};

/*
 * FCoE error/warning reporting entry
 */
struct fcoe_err_report_entry {
	__le32 err_warn_bitmap_lo /* Error bitmap lower 32 bits */;
	__le32 err_warn_bitmap_hi /* Error bitmap higher 32 bits */;
	/* Buffer offset the beginning of the Sequence last transmitted */
	__le32 tx_buf_off;
	/* Buffer offset from the beginning of the Sequence last received */
	__le32 rx_buf_off;
	__le16 rx_id /* RX_ID of the associated task */;
	__le16 reserved1;
	__le32 reserved2;
};

/*
 * FCoE CQ element middle path information
 */
struct fcoe_cqe_midpath_info {
	__le32 data_placement_size;
	__le16 rx_id;
	__le16 reserved0;
	__le32 reserved1[4];
};

/*
 * FCoE CQ element unsolicited information
 */
struct fcoe_unsolic_info {
	/* BD information: Physical address and opaque data */
	struct scsi_bd bd_info;
	__le16 conn_id /* Connection ID the frame is associated to */;
	__le16 pkt_len /* Packet length */;
	u8 reserved1[4];
};

/*
 * FCoE warning reporting entry
 */
struct fcoe_warning_report_entry {
	/* BD information: Physical address and opaque data */
	struct scsi_bd bd_info;
	/* Buffer offset the beginning of the Sequence last transmitted */
	__le32 buf_off;
	__le16 rx_id /* RX_ID of the associated task */;
	__le16 reserved1;
};

/*
 * FCoE CQ element information
 */
union fcoe_cqe_info {
	struct fcoe_cqe_rsp_info rsp_info /* Response completion information */;
	/* Target completion information */
	struct fcoe_cqe_target_info target_info;
	/* Error completion information */
	struct fcoe_err_report_entry err_info;
	struct fcoe_abts_info abts_info /* ABTS completion information */;
	/* Middle path completion information */
	struct fcoe_cqe_midpath_info midpath_info;
	/* Unsolicited packet completion information */
	struct fcoe_unsolic_info unsolic_info;
	/* Warning completion information (Rec Tov expiration) */
	struct fcoe_warning_report_entry warn_info;
};

/*
 * FCoE CQ element
 */
struct fcoe_cqe {
	__le32 cqe_data;
	/* The task identifier (OX_ID) to be completed */
#define FCOE_CQE_TASK_ID_MASK    0xFFFF
#define FCOE_CQE_TASK_ID_SHIFT   0
	/*
	 * The CQE type: 0x0 Indicating on a pending work request completion.
	 * 0x1 - Indicating on an unsolicited event notification. use enum
	 * fcoe_cqe_type  (use enum fcoe_cqe_type)
	 */
#define FCOE_CQE_CQE_TYPE_MASK   0xF
#define FCOE_CQE_CQE_TYPE_SHIFT  16
#define FCOE_CQE_RESERVED0_MASK  0xFFF
#define FCOE_CQE_RESERVED0_SHIFT 20
	__le16 reserved1;
	__le16 fw_cq_prod;
	union fcoe_cqe_info cqe_info;
};

/*
 * FCoE CQE type
 */
enum fcoe_cqe_type {
	/* solicited response on a R/W or middle-path SQE */
	FCOE_GOOD_COMPLETION_CQE_TYPE,
	FCOE_UNSOLIC_CQE_TYPE /* unsolicited packet, RQ consumed */,
	FCOE_ERROR_DETECTION_CQE_TYPE /* timer expiration, validation error */,
	FCOE_WARNING_CQE_TYPE /* rec_tov or rr_tov timer expiration */,
	FCOE_EXCH_CLEANUP_CQE_TYPE /* task cleanup completed */,
	FCOE_ABTS_CQE_TYPE /* ABTS received and task cleaned */,
	FCOE_DUMMY_CQE_TYPE /* just increment SQ CONS */,
	/* Task was completed wight after sending a pkt to the target */
	FCOE_LOCAL_COMP_CQE_TYPE,
	MAX_FCOE_CQE_TYPE
};

/*
 * FCoE fast path error codes
 */
enum fcoe_fp_error_warning_code {
	FCOE_ERROR_CODE_XFER_OOO_RO /* XFER error codes */,
	FCOE_ERROR_CODE_XFER_RO_NOT_ALIGNED,
	FCOE_ERROR_CODE_XFER_NULL_BURST_LEN,
	FCOE_ERROR_CODE_XFER_RO_GREATER_THAN_DATA2TRNS,
	FCOE_ERROR_CODE_XFER_INVALID_PAYLOAD_SIZE,
	FCOE_ERROR_CODE_XFER_TASK_TYPE_NOT_WRITE,
	FCOE_ERROR_CODE_XFER_PEND_XFER_SET,
	FCOE_ERROR_CODE_XFER_OPENED_SEQ,
	FCOE_ERROR_CODE_XFER_FCTL,
	FCOE_ERROR_CODE_FCP_RSP_BIDI_FLAGS_SET /* FCP RSP error codes */,
	FCOE_ERROR_CODE_FCP_RSP_INVALID_LENGTH_FIELD,
	FCOE_ERROR_CODE_FCP_RSP_INVALID_SNS_FIELD,
	FCOE_ERROR_CODE_FCP_RSP_INVALID_PAYLOAD_SIZE,
	FCOE_ERROR_CODE_FCP_RSP_PEND_XFER_SET,
	FCOE_ERROR_CODE_FCP_RSP_OPENED_SEQ,
	FCOE_ERROR_CODE_FCP_RSP_FCTL,
	FCOE_ERROR_CODE_FCP_RSP_LAST_SEQ_RESET,
	FCOE_ERROR_CODE_FCP_RSP_CONF_REQ_NOT_SUPPORTED_YET,
	FCOE_ERROR_CODE_DATA_OOO_RO /* FCP DATA error codes */,
	FCOE_ERROR_CODE_DATA_EXCEEDS_DEFINED_MAX_FRAME_SIZE,
	FCOE_ERROR_CODE_DATA_EXCEEDS_DATA2TRNS,
	FCOE_ERROR_CODE_DATA_SOFI3_SEQ_ACTIVE_SET,
	FCOE_ERROR_CODE_DATA_SOFN_SEQ_ACTIVE_RESET,
	FCOE_ERROR_CODE_DATA_EOFN_END_SEQ_SET,
	FCOE_ERROR_CODE_DATA_EOFT_END_SEQ_RESET,
	FCOE_ERROR_CODE_DATA_TASK_TYPE_NOT_READ,
	FCOE_ERROR_CODE_DATA_FCTL_INITIATIR,
	FCOE_ERROR_CODE_MIDPATH_INVALID_TYPE /* Middle path error codes */,
	FCOE_ERROR_CODE_MIDPATH_SOFI3_SEQ_ACTIVE_SET,
	FCOE_ERROR_CODE_MIDPATH_SOFN_SEQ_ACTIVE_RESET,
	FCOE_ERROR_CODE_MIDPATH_EOFN_END_SEQ_SET,
	FCOE_ERROR_CODE_MIDPATH_EOFT_END_SEQ_RESET,
	FCOE_ERROR_CODE_MIDPATH_REPLY_FCTL,
	FCOE_ERROR_CODE_MIDPATH_INVALID_REPLY,
	FCOE_ERROR_CODE_MIDPATH_ELS_REPLY_RCTL,
	FCOE_ERROR_CODE_COMMON_MIDDLE_FRAME_WITH_PAD /* Common error codes */,
	FCOE_ERROR_CODE_COMMON_SEQ_INIT_IN_TCE,
	FCOE_ERROR_CODE_COMMON_FC_HDR_RX_ID_MISMATCH,
	FCOE_ERROR_CODE_COMMON_INCORRECT_SEQ_CNT,
	FCOE_ERROR_CODE_COMMON_DATA_FC_HDR_FCP_TYPE_MISMATCH,
	FCOE_ERROR_CODE_COMMON_DATA_NO_MORE_SGES,
	FCOE_ERROR_CODE_COMMON_OPTIONAL_FC_HDR,
	FCOE_ERROR_CODE_COMMON_READ_TCE_OX_ID_TOO_BIG,
	FCOE_ERROR_CODE_COMMON_DATA_WAS_NOT_TRANSMITTED,
	FCOE_ERROR_CODE_COMMON_TASK_DDF_RCTL_INFO_FIELD,
	FCOE_ERROR_CODE_COMMON_TASK_INVALID_RCTL,
	FCOE_ERROR_CODE_COMMON_TASK_RCTL_GENERAL_MISMATCH,
	FCOE_ERROR_CODE_E_D_TOV_TIMER_EXPIRATION /* Timer error codes */,
	FCOE_WARNING_CODE_REC_TOV_TIMER_EXPIRATION /* Timer error codes */,
	FCOE_ERROR_CODE_RR_TOV_TIMER_EXPIRATION /* Timer error codes */,
	/* ABTSrsp pckt arrived unexpected */
	FCOE_ERROR_CODE_ABTS_REPLY_UNEXPECTED,
	FCOE_ERROR_CODE_TARGET_MODE_FCP_RSP,
	FCOE_ERROR_CODE_TARGET_MODE_FCP_XFER,
	FCOE_ERROR_CODE_TARGET_MODE_DATA_TASK_TYPE_NOT_WRITE,
	FCOE_ERROR_CODE_DATA_FCTL_TARGET,
	FCOE_ERROR_CODE_TARGET_DATA_SIZE_NO_MATCH_XFER,
	FCOE_ERROR_CODE_TARGET_DIF_CRC_CHECKSUM_ERROR,
	FCOE_ERROR_CODE_TARGET_DIF_REF_TAG_ERROR,
	FCOE_ERROR_CODE_TARGET_DIF_APP_TAG_ERROR,
	MAX_FCOE_FP_ERROR_WARNING_CODE
};


/*
 * FCoE RESPQ element
 */
struct fcoe_respqe {
	__le16 ox_id /* OX_ID that is located in the FCP_RSP FC header */;
	__le16 rx_id /* RX_ID that is located in the FCP_RSP FC header */;
	__le32 additional_info;
/* PARAM that is located in the FCP_RSP FC header */
#define FCOE_RESPQE_PARAM_MASK            0xFFFFFF
#define FCOE_RESPQE_PARAM_SHIFT           0
/* Indication whther its Target-auto-rsp mode or not */
#define FCOE_RESPQE_TARGET_AUTO_RSP_MASK  0xFF
#define FCOE_RESPQE_TARGET_AUTO_RSP_SHIFT 24
};


/*
 * FCoE slow path error codes
 */
enum fcoe_sp_error_code {
	/* Error codes for Error Reporting in slow path flows */
	FCOE_ERROR_CODE_SLOW_PATH_TOO_MANY_FUNCS,
	FCOE_ERROR_SLOW_PATH_CODE_NO_LICENSE,
	MAX_FCOE_SP_ERROR_CODE
};

/*
 * FCoE task TX state
 */
enum fcoe_task_tx_state {
	/* Initiate state after driver has initialized the task */
	FCOE_TASK_TX_STATE_NORMAL,
	/* Updated by TX path after complete transmitting unsolicited packet */
	FCOE_TASK_TX_STATE_UNSOLICITED_COMPLETED,
	/*
	 * Updated by TX path after start processing the task requesting the
	 * cleanup/abort operation
	 */
	FCOE_TASK_TX_STATE_CLEAN_REQ,
	FCOE_TASK_TX_STATE_ABTS /* Updated by TX path during abort procedure */,
	/* Updated by TX path during exchange cleanup procedure */
	FCOE_TASK_TX_STATE_EXCLEANUP,
	/*
	 * Updated by TX path during exchange cleanup continuation task
	 * procedure
	 */
	FCOE_TASK_TX_STATE_EXCLEANUP_TARGET_WRITE_CONT,
	/* Updated by TX path during exchange cleanup first xfer procedure */
	FCOE_TASK_TX_STATE_EXCLEANUP_TARGET_WRITE,
	/* Updated by TX path during exchange cleanup read task in Target */
	FCOE_TASK_TX_STATE_EXCLEANUP_TARGET_READ_OR_RSP,
	/* Updated by TX path during target exchange cleanup procedure */
	FCOE_TASK_TX_STATE_EXCLEANUP_TARGET_WRITE_LAST_CYCLE,
	/* Updated by TX path during sequence recovery procedure */
	FCOE_TASK_TX_STATE_SEQRECOVERY,
	MAX_FCOE_TASK_TX_STATE
};

#endif /* __QEDF_HSI__ */