include/linux/nvme-fc.h - kernel/msm-4.19 - Gitiles

 /*
  * 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 r1.14 (16-020vB).
  */

 #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

 enum {
 	FCNVME_SC_SUCCESS		= 0,
 	FCNVME_SC_INVALID_FIELD		= 1,
 	FCNVME_SC_INVALID_CONNID	= 2,
 };

 struct nvme_fc_ersp_iu {
 	__u8			status_code;
 	__u8			rsvd1;
 	__be16			iu_len;
 	__be32			rsn;
 	__be32			xfrd_len;
 	__be32			rsvd12;
 	struct nvme_completion	cqe;
 	/* for now - no additional payload */
 };


 /* FC-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 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;
 };

 /* FC-NVME LS RJT reason_code values */
 enum fcnvme_ls_rjt_reason {
 	FCNVME_RJT_RC_NONE		= 0,
 	/* no reason - not to be sent */

 	FCNVME_RJT_RC_INVAL		= 0x01,
 	/* invalid NVMe_LS command code */

 	FCNVME_RJT_RC_LOGIC		= 0x03,
 	/* logical error */

 	FCNVME_RJT_RC_UNAB		= 0x09,
 	/* unable to perform command request */

 	FCNVME_RJT_RC_UNSUP		= 0x0b,
 	/* command not supported */

 	FCNVME_RJT_RC_INPROG		= 0x0e,
 	/* command already in progress */

 	FCNVME_RJT_RC_INV_ASSOC		= 0x40,
 	/* Invalid Association ID*/

 	FCNVME_RJT_RC_INV_CONN		= 0x41,
 	/* Invalid Connection ID*/

 	FCNVME_RJT_RC_VENDOR		= 0xff,
 	/* vendor specific error */
 };

 /* FC-NVME LS RJT reason_explanation values */
 enum fcnvme_ls_rjt_explan {
 	FCNVME_RJT_EXP_NONE		= 0x00,
 	/* No additional explanation */

 	FCNVME_RJT_EXP_OXID_RXID	= 0x17,
 	/* invalid OX_ID-RX_ID combination */

 	FCNVME_RJT_EXP_INSUF_RES	= 0x29,
 	/* insufficient resources */

 	FCNVME_RJT_EXP_UNAB_DATA	= 0x2a,
 	/* unable to supply requested data */

 	FCNVME_RJT_EXP_INV_LEN		= 0x2d,
 	/* Invalid payload length */
 };

 /* 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;		/* fcnvme_ls_rjt_reason */
 	u8	reason_explanation;	/* fcnvme_ls_rjt_explan */

 	u8	vendor;
 	__be32	rsvd12;
 };


 #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;
 	uuid_t	hostid;
 	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 */
	/*
	* 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 r1.14 (16-020vB).
	*/

	#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

	enum {
	FCNVME_SC_SUCCESS = 0,
	FCNVME_SC_INVALID_FIELD = 1,
	FCNVME_SC_INVALID_CONNID = 2,
	};

	struct nvme_fc_ersp_iu {
	__u8 status_code;
	__u8 rsvd1;
	__be16 iu_len;
	__be32 rsn;
	__be32 xfrd_len;
	__be32 rsvd12;
	struct nvme_completion cqe;
	/* for now - no additional payload */
	};


	/* FC-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 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;
	};

	/* FC-NVME LS RJT reason_code values */
	enum fcnvme_ls_rjt_reason {
	FCNVME_RJT_RC_NONE = 0,
	/* no reason - not to be sent */

	FCNVME_RJT_RC_INVAL = 0x01,
	/* invalid NVMe_LS command code */

	FCNVME_RJT_RC_LOGIC = 0x03,
	/* logical error */

	FCNVME_RJT_RC_UNAB = 0x09,
	/* unable to perform command request */

	FCNVME_RJT_RC_UNSUP = 0x0b,
	/* command not supported */

	FCNVME_RJT_RC_INPROG = 0x0e,
	/* command already in progress */

	FCNVME_RJT_RC_INV_ASSOC = 0x40,
	/* Invalid Association ID*/

	FCNVME_RJT_RC_INV_CONN = 0x41,
	/* Invalid Connection ID*/

	FCNVME_RJT_RC_VENDOR = 0xff,
	/* vendor specific error */
	};

	/* FC-NVME LS RJT reason_explanation values */
	enum fcnvme_ls_rjt_explan {
	FCNVME_RJT_EXP_NONE = 0x00,
	/* No additional explanation */

	FCNVME_RJT_EXP_OXID_RXID = 0x17,
	/* invalid OX_ID-RX_ID combination */

	FCNVME_RJT_EXP_INSUF_RES = 0x29,
	/* insufficient resources */

	FCNVME_RJT_EXP_UNAB_DATA = 0x2a,
	/* unable to supply requested data */

	FCNVME_RJT_EXP_INV_LEN = 0x2d,
	/* Invalid payload length */
	};

	/* 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; /* fcnvme_ls_rjt_reason */
	u8 reason_explanation; /* fcnvme_ls_rjt_explan */

	u8 vendor;
	__be32 rsvd12;
	};


	#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;
	uuid_t hostid;
	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 */