2 * Copyright (c) 2016 Avago Technologies. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful.
9 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
10 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
11 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE DISCLAIMED, EXCEPT TO
12 * THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID.
13 * See the GNU General Public License for more details, a copy of which
14 * can be found in the file COPYING included with this package
19 * This file contains definitions relative to FC-NVME r1.14 (16-020vB).
26 #define NVME_CMD_SCSI_ID 0xFD
27 #define NVME_CMD_FC_ID FC_TYPE_NVME
29 /* FC-NVME Cmd IU Flags */
30 #define FCNVME_CMD_FLAGS_DIRMASK 0x03
31 #define FCNVME_CMD_FLAGS_WRITE 0x01
32 #define FCNVME_CMD_FLAGS_READ 0x02
34 struct nvme_fc_cmd_iu {
43 struct nvme_command sqe;
47 #define NVME_FC_SIZEOF_ZEROS_RSP 12
50 FCNVME_SC_SUCCESS = 0,
51 FCNVME_SC_INVALID_FIELD = 1,
52 FCNVME_SC_INVALID_CONNID = 2,
55 struct nvme_fc_ersp_iu {
62 struct nvme_completion cqe;
63 /* for now - no additional payload */
67 /* FC-NVME Link Services */
72 FCNVME_LS_CREATE_ASSOCIATION = 3,
73 FCNVME_LS_CREATE_CONNECTION = 4,
74 FCNVME_LS_DISCONNECT = 5,
77 /* FC-NVME Link Service Descriptors */
79 FCNVME_LSDESC_RSVD = 0x0,
80 FCNVME_LSDESC_RQST = 0x1,
81 FCNVME_LSDESC_RJT = 0x2,
82 FCNVME_LSDESC_CREATE_ASSOC_CMD = 0x3,
83 FCNVME_LSDESC_CREATE_CONN_CMD = 0x4,
84 FCNVME_LSDESC_DISCONN_CMD = 0x5,
85 FCNVME_LSDESC_CONN_ID = 0x6,
86 FCNVME_LSDESC_ASSOC_ID = 0x7,
90 /* ********** start of Link Service Descriptors ********** */
94 * fills in length of a descriptor. Struture minus descriptor header
96 static inline __be32 fcnvme_lsdesc_len(size_t sz)
98 return cpu_to_be32(sz - (2 * sizeof(u32)));
101 struct fcnvme_ls_rqst_w0 {
102 u8 ls_cmd; /* FCNVME_LS_xxx */
106 /* FCNVME_LSDESC_RQST */
107 struct fcnvme_lsdesc_rqst {
108 __be32 desc_tag; /* FCNVME_LSDESC_xxx */
110 struct fcnvme_ls_rqst_w0 w0;
114 /* FC-NVME LS RJT reason_code values */
115 enum fcnvme_ls_rjt_reason {
116 FCNVME_RJT_RC_NONE = 0,
117 /* no reason - not to be sent */
119 FCNVME_RJT_RC_INVAL = 0x01,
120 /* invalid NVMe_LS command code */
122 FCNVME_RJT_RC_LOGIC = 0x03,
125 FCNVME_RJT_RC_UNAB = 0x09,
126 /* unable to perform command request */
128 FCNVME_RJT_RC_UNSUP = 0x0b,
129 /* command not supported */
131 FCNVME_RJT_RC_INPROG = 0x0e,
132 /* command already in progress */
134 FCNVME_RJT_RC_INV_ASSOC = 0x40,
135 /* Invalid Association ID*/
137 FCNVME_RJT_RC_INV_CONN = 0x41,
138 /* Invalid Connection ID*/
140 FCNVME_RJT_RC_VENDOR = 0xff,
141 /* vendor specific error */
144 /* FC-NVME LS RJT reason_explanation values */
145 enum fcnvme_ls_rjt_explan {
146 FCNVME_RJT_EXP_NONE = 0x00,
147 /* No additional explanation */
149 FCNVME_RJT_EXP_OXID_RXID = 0x17,
150 /* invalid OX_ID-RX_ID combination */
152 FCNVME_RJT_EXP_INSUF_RES = 0x29,
153 /* insufficient resources */
155 FCNVME_RJT_EXP_UNAB_DATA = 0x2a,
156 /* unable to supply requested data */
158 FCNVME_RJT_EXP_INV_LEN = 0x2d,
159 /* Invalid payload length */
162 /* FCNVME_LSDESC_RJT */
163 struct fcnvme_lsdesc_rjt {
164 __be32 desc_tag; /* FCNVME_LSDESC_xxx */
169 * Reject reason and explanaction codes are generic
170 * to ELs's from LS-3.
172 u8 reason_code; /* fcnvme_ls_rjt_reason */
173 u8 reason_explanation; /* fcnvme_ls_rjt_explan */
180 #define FCNVME_ASSOC_HOSTNQN_LEN 256
181 #define FCNVME_ASSOC_SUBNQN_LEN 256
183 /* FCNVME_LSDESC_CREATE_ASSOC_CMD */
184 struct fcnvme_lsdesc_cr_assoc_cmd {
185 __be32 desc_tag; /* FCNVME_LSDESC_xxx */
194 u8 hostnqn[FCNVME_ASSOC_HOSTNQN_LEN];
195 u8 subnqn[FCNVME_ASSOC_SUBNQN_LEN];
199 /* FCNVME_LSDESC_CREATE_CONN_CMD */
200 struct fcnvme_lsdesc_cr_conn_cmd {
201 __be32 desc_tag; /* FCNVME_LSDESC_xxx */
211 /* Disconnect Scope Values */
213 FCNVME_DISCONN_ASSOCIATION = 0,
214 FCNVME_DISCONN_CONNECTION = 1,
217 /* FCNVME_LSDESC_DISCONN_CMD */
218 struct fcnvme_lsdesc_disconn_cmd {
219 __be32 desc_tag; /* FCNVME_LSDESC_xxx */
222 /* note: scope is really a 1 bit field */
223 u8 scope; /* FCNVME_DISCONN_xxx */
228 /* FCNVME_LSDESC_CONN_ID */
229 struct fcnvme_lsdesc_conn_id {
230 __be32 desc_tag; /* FCNVME_LSDESC_xxx */
232 __be64 connection_id;
235 /* FCNVME_LSDESC_ASSOC_ID */
236 struct fcnvme_lsdesc_assoc_id {
237 __be32 desc_tag; /* FCNVME_LSDESC_xxx */
239 __be64 association_id;
244 FCNVME_RS_RCTL_DATA = 1,
245 FCNVME_RS_RCTL_XFER_RDY = 5,
246 FCNVME_RS_RCTL_RSP = 8,
250 /* ********** start of Link Services ********** */
254 struct fcnvme_ls_rjt {
255 struct fcnvme_ls_rqst_w0 w0;
256 __be32 desc_list_len;
257 struct fcnvme_lsdesc_rqst rqst;
258 struct fcnvme_lsdesc_rjt rjt;
262 struct fcnvme_ls_acc_hdr {
263 struct fcnvme_ls_rqst_w0 w0;
264 __be32 desc_list_len;
265 struct fcnvme_lsdesc_rqst rqst;
266 /* Followed by cmd-specific ACC descriptors, see next definitions */
269 /* FCNVME_LS_CREATE_ASSOCIATION */
270 struct fcnvme_ls_cr_assoc_rqst {
271 struct fcnvme_ls_rqst_w0 w0;
272 __be32 desc_list_len;
273 struct fcnvme_lsdesc_cr_assoc_cmd assoc_cmd;
276 struct fcnvme_ls_cr_assoc_acc {
277 struct fcnvme_ls_acc_hdr hdr;
278 struct fcnvme_lsdesc_assoc_id associd;
279 struct fcnvme_lsdesc_conn_id connectid;
283 /* FCNVME_LS_CREATE_CONNECTION */
284 struct fcnvme_ls_cr_conn_rqst {
285 struct fcnvme_ls_rqst_w0 w0;
286 __be32 desc_list_len;
287 struct fcnvme_lsdesc_assoc_id associd;
288 struct fcnvme_lsdesc_cr_conn_cmd connect_cmd;
291 struct fcnvme_ls_cr_conn_acc {
292 struct fcnvme_ls_acc_hdr hdr;
293 struct fcnvme_lsdesc_conn_id connectid;
296 /* FCNVME_LS_DISCONNECT */
297 struct fcnvme_ls_disconnect_rqst {
298 struct fcnvme_ls_rqst_w0 w0;
299 __be32 desc_list_len;
300 struct fcnvme_lsdesc_assoc_id associd;
301 struct fcnvme_lsdesc_disconn_cmd discon_cmd;
304 struct fcnvme_ls_disconnect_acc {
305 struct fcnvme_ls_acc_hdr hdr;
310 * Yet to be defined in FC-NVME:
312 #define NVME_FC_CONNECT_TIMEOUT_SEC 2 /* 2 seconds */
313 #define NVME_FC_LS_TIMEOUT_SEC 2 /* 2 seconds */
314 #define NVME_FC_TGTOP_TIMEOUT_SEC 2 /* 2 seconds */
317 #endif /* _NVME_FC_H */