mirror of
https://github.com/torvalds/linux.git
synced 2024-11-26 14:12:06 +00:00
nvme-fabrics: Add FC transport FC-NVME definitions
- Formats for Cmd, Data, Rsp IUs - Formats FC-4 LS definitions - Add to MAINTAINERS file Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jay Freyensee <james_p_freyensee@linux.intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
James Smart
Sagi Grimberg
parent
cba3bdfd2e
commit
b1ad1475b4
@ -8659,6 +8659,12 @@ L: linux-nvme@lists.infradead.org
|
||||
S: Supported
|
||||
F: drivers/nvme/target/
|
||||
|
||||
NVM EXPRESS FC TRANSPORT DRIVERS
|
||||
M: James Smart <james.smart@broadcom.com>
|
||||
L: linux-nvme@lists.infradead.org
|
||||
S: Supported
|
||||
F: include/linux/nvme-fc.h
|
||||
|
||||
NVMEM FRAMEWORK
|
||||
M: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
|
||||
M: Maxime Ripard <maxime.ripard@free-electrons.com>
|
||||
|
||||
268
include/linux/nvme-fc.h
Normal file
268
include/linux/nvme-fc.h
Normal file
@ -0,0 +1,268 @@
|
||||
/*
|
||||
* Copyright (c) 2016 Avago Technologies. All rights reserved.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of version 2 of the GNU General Public License as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful.
|
||||
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
|
||||
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
|
||||
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE DISCLAIMED, EXCEPT TO
|
||||
* THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID.
|
||||
* See the GNU General Public License for more details, a copy of which
|
||||
* can be found in the file COPYING included with this package
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file contains definitions relative to FC-NVME r1.11 and a few
|
||||
* newer items
|
||||
*/
|
||||
|
||||
#ifndef _NVME_FC_H
|
||||
#define _NVME_FC_H 1
|
||||
|
||||
|
||||
#define NVME_CMD_SCSI_ID 0xFD
|
||||
#define NVME_CMD_FC_ID FC_TYPE_NVME
|
||||
|
||||
/* FC-NVME Cmd IU Flags */
|
||||
#define FCNVME_CMD_FLAGS_DIRMASK 0x03
|
||||
#define FCNVME_CMD_FLAGS_WRITE 0x01
|
||||
#define FCNVME_CMD_FLAGS_READ 0x02
|
||||
|
||||
struct nvme_fc_cmd_iu {
|
||||
__u8 scsi_id;
|
||||
__u8 fc_id;
|
||||
__be16 iu_len;
|
||||
__u8 rsvd4[3];
|
||||
__u8 flags;
|
||||
__be64 connection_id;
|
||||
__be32 csn;
|
||||
__be32 data_len;
|
||||
struct nvme_command sqe;
|
||||
__be32 rsvd88[2];
|
||||
};
|
||||
|
||||
#define NVME_FC_SIZEOF_ZEROS_RSP 12
|
||||
|
||||
struct nvme_fc_ersp_iu {
|
||||
__u8 rsvd0[2];
|
||||
__be16 iu_len;
|
||||
__be32 rsn;
|
||||
__be32 xfrd_len;
|
||||
__be32 rsvd12;
|
||||
struct nvme_completion cqe;
|
||||
/* for now - no additional payload */
|
||||
};
|
||||
|
||||
|
||||
/* FC-NVME r1.03/16-119v0 NVME Link Services */
|
||||
enum {
|
||||
FCNVME_LS_RSVD = 0,
|
||||
FCNVME_LS_RJT = 1,
|
||||
FCNVME_LS_ACC = 2,
|
||||
FCNVME_LS_CREATE_ASSOCIATION = 3,
|
||||
FCNVME_LS_CREATE_CONNECTION = 4,
|
||||
FCNVME_LS_DISCONNECT = 5,
|
||||
};
|
||||
|
||||
/* FC-NVME r1.03/16-119v0 NVME Link Service Descriptors */
|
||||
enum {
|
||||
FCNVME_LSDESC_RSVD = 0x0,
|
||||
FCNVME_LSDESC_RQST = 0x1,
|
||||
FCNVME_LSDESC_RJT = 0x2,
|
||||
FCNVME_LSDESC_CREATE_ASSOC_CMD = 0x3,
|
||||
FCNVME_LSDESC_CREATE_CONN_CMD = 0x4,
|
||||
FCNVME_LSDESC_DISCONN_CMD = 0x5,
|
||||
FCNVME_LSDESC_CONN_ID = 0x6,
|
||||
FCNVME_LSDESC_ASSOC_ID = 0x7,
|
||||
};
|
||||
|
||||
|
||||
/* ********** start of Link Service Descriptors ********** */
|
||||
|
||||
|
||||
/*
|
||||
* fills in length of a descriptor. Struture minus descriptor header
|
||||
*/
|
||||
static inline __be32 fcnvme_lsdesc_len(size_t sz)
|
||||
{
|
||||
return cpu_to_be32(sz - (2 * sizeof(u32)));
|
||||
}
|
||||
|
||||
|
||||
struct fcnvme_ls_rqst_w0 {
|
||||
u8 ls_cmd; /* FCNVME_LS_xxx */
|
||||
u8 zeros[3];
|
||||
};
|
||||
|
||||
/* FCNVME_LSDESC_RQST */
|
||||
struct fcnvme_lsdesc_rqst {
|
||||
__be32 desc_tag; /* FCNVME_LSDESC_xxx */
|
||||
__be32 desc_len;
|
||||
struct fcnvme_ls_rqst_w0 w0;
|
||||
__be32 rsvd12;
|
||||
};
|
||||
|
||||
|
||||
|
||||
|
||||
/* FCNVME_LSDESC_RJT */
|
||||
struct fcnvme_lsdesc_rjt {
|
||||
__be32 desc_tag; /* FCNVME_LSDESC_xxx */
|
||||
__be32 desc_len;
|
||||
u8 rsvd8;
|
||||
|
||||
/*
|
||||
* Reject reason and explanaction codes are generic
|
||||
* to ELs's from LS-3.
|
||||
*/
|
||||
u8 reason_code;
|
||||
u8 reason_explanation;
|
||||
|
||||
u8 vendor;
|
||||
__be32 rsvd12;
|
||||
};
|
||||
|
||||
|
||||
#define FCNVME_ASSOC_HOSTID_LEN 64
|
||||
#define FCNVME_ASSOC_HOSTNQN_LEN 256
|
||||
#define FCNVME_ASSOC_SUBNQN_LEN 256
|
||||
|
||||
/* FCNVME_LSDESC_CREATE_ASSOC_CMD */
|
||||
struct fcnvme_lsdesc_cr_assoc_cmd {
|
||||
__be32 desc_tag; /* FCNVME_LSDESC_xxx */
|
||||
__be32 desc_len;
|
||||
__be16 ersp_ratio;
|
||||
__be16 rsvd10;
|
||||
__be32 rsvd12[9];
|
||||
__be16 cntlid;
|
||||
__be16 sqsize;
|
||||
__be32 rsvd52;
|
||||
u8 hostid[FCNVME_ASSOC_HOSTID_LEN];
|
||||
u8 hostnqn[FCNVME_ASSOC_HOSTNQN_LEN];
|
||||
u8 subnqn[FCNVME_ASSOC_SUBNQN_LEN];
|
||||
u8 rsvd632[384];
|
||||
};
|
||||
|
||||
/* FCNVME_LSDESC_CREATE_CONN_CMD */
|
||||
struct fcnvme_lsdesc_cr_conn_cmd {
|
||||
__be32 desc_tag; /* FCNVME_LSDESC_xxx */
|
||||
__be32 desc_len;
|
||||
__be16 ersp_ratio;
|
||||
__be16 rsvd10;
|
||||
__be32 rsvd12[9];
|
||||
__be16 qid;
|
||||
__be16 sqsize;
|
||||
__be32 rsvd52;
|
||||
};
|
||||
|
||||
/* Disconnect Scope Values */
|
||||
enum {
|
||||
FCNVME_DISCONN_ASSOCIATION = 0,
|
||||
FCNVME_DISCONN_CONNECTION = 1,
|
||||
};
|
||||
|
||||
/* FCNVME_LSDESC_DISCONN_CMD */
|
||||
struct fcnvme_lsdesc_disconn_cmd {
|
||||
__be32 desc_tag; /* FCNVME_LSDESC_xxx */
|
||||
__be32 desc_len;
|
||||
u8 rsvd8[3];
|
||||
/* note: scope is really a 1 bit field */
|
||||
u8 scope; /* FCNVME_DISCONN_xxx */
|
||||
__be32 rsvd12;
|
||||
__be64 id;
|
||||
};
|
||||
|
||||
/* FCNVME_LSDESC_CONN_ID */
|
||||
struct fcnvme_lsdesc_conn_id {
|
||||
__be32 desc_tag; /* FCNVME_LSDESC_xxx */
|
||||
__be32 desc_len;
|
||||
__be64 connection_id;
|
||||
};
|
||||
|
||||
/* FCNVME_LSDESC_ASSOC_ID */
|
||||
struct fcnvme_lsdesc_assoc_id {
|
||||
__be32 desc_tag; /* FCNVME_LSDESC_xxx */
|
||||
__be32 desc_len;
|
||||
__be64 association_id;
|
||||
};
|
||||
|
||||
/* r_ctl values */
|
||||
enum {
|
||||
FCNVME_RS_RCTL_DATA = 1,
|
||||
FCNVME_RS_RCTL_XFER_RDY = 5,
|
||||
FCNVME_RS_RCTL_RSP = 8,
|
||||
};
|
||||
|
||||
|
||||
/* ********** start of Link Services ********** */
|
||||
|
||||
|
||||
/* FCNVME_LS_RJT */
|
||||
struct fcnvme_ls_rjt {
|
||||
struct fcnvme_ls_rqst_w0 w0;
|
||||
__be32 desc_list_len;
|
||||
struct fcnvme_lsdesc_rqst rqst;
|
||||
struct fcnvme_lsdesc_rjt rjt;
|
||||
};
|
||||
|
||||
/* FCNVME_LS_ACC */
|
||||
struct fcnvme_ls_acc_hdr {
|
||||
struct fcnvme_ls_rqst_w0 w0;
|
||||
__be32 desc_list_len;
|
||||
struct fcnvme_lsdesc_rqst rqst;
|
||||
/* Followed by cmd-specific ACC descriptors, see next definitions */
|
||||
};
|
||||
|
||||
/* FCNVME_LS_CREATE_ASSOCIATION */
|
||||
struct fcnvme_ls_cr_assoc_rqst {
|
||||
struct fcnvme_ls_rqst_w0 w0;
|
||||
__be32 desc_list_len;
|
||||
struct fcnvme_lsdesc_cr_assoc_cmd assoc_cmd;
|
||||
};
|
||||
|
||||
struct fcnvme_ls_cr_assoc_acc {
|
||||
struct fcnvme_ls_acc_hdr hdr;
|
||||
struct fcnvme_lsdesc_assoc_id associd;
|
||||
struct fcnvme_lsdesc_conn_id connectid;
|
||||
};
|
||||
|
||||
|
||||
/* FCNVME_LS_CREATE_CONNECTION */
|
||||
struct fcnvme_ls_cr_conn_rqst {
|
||||
struct fcnvme_ls_rqst_w0 w0;
|
||||
__be32 desc_list_len;
|
||||
struct fcnvme_lsdesc_assoc_id associd;
|
||||
struct fcnvme_lsdesc_cr_conn_cmd connect_cmd;
|
||||
};
|
||||
|
||||
struct fcnvme_ls_cr_conn_acc {
|
||||
struct fcnvme_ls_acc_hdr hdr;
|
||||
struct fcnvme_lsdesc_conn_id connectid;
|
||||
};
|
||||
|
||||
/* FCNVME_LS_DISCONNECT */
|
||||
struct fcnvme_ls_disconnect_rqst {
|
||||
struct fcnvme_ls_rqst_w0 w0;
|
||||
__be32 desc_list_len;
|
||||
struct fcnvme_lsdesc_assoc_id associd;
|
||||
struct fcnvme_lsdesc_disconn_cmd discon_cmd;
|
||||
};
|
||||
|
||||
struct fcnvme_ls_disconnect_acc {
|
||||
struct fcnvme_ls_acc_hdr hdr;
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* Yet to be defined in FC-NVME:
|
||||
*/
|
||||
#define NVME_FC_CONNECT_TIMEOUT_SEC 2 /* 2 seconds */
|
||||
#define NVME_FC_LS_TIMEOUT_SEC 2 /* 2 seconds */
|
||||
#define NVME_FC_TGTOP_TIMEOUT_SEC 2 /* 2 seconds */
|
||||
|
||||
|
||||
#endif /* _NVME_FC_H */
|
||||
Loading…
Reference in New Issue
Block a user