MAJOR=4
MINOR=43
DEVNAME=tty43
  *   +ˆÂÄƒ}öÛ_†I|¥+a–Ðz¾””ÔD¨ 	Å ÝÀ9q§”Å£È &ã    +/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (c) 2016 Avago Technologies.  All rights reserved.
 */

/*
 * This file contains definitions relative to FC-NVME-2 r1.08
 * (T11-2019-00210-v004).
 */

#ifndef _NVME_FC_H
#define _NVME_FC_H 1

#include <uapi/scsi/fc/fc_fs.h>

#define NVME_CMD_FORMAT_ID		0xFD
#define NVME_CMD_FC_ID			FC_TYPE_NVME

/* FC-NVME Cmd IU Flags */
enum {
	FCNVME_CMD_FLAGS_DIRMASK	= 0x03,
	FCNVME_CMD_FLAGS_WRITE		= (1 << 0),
	FCNVME_CMD_FLAGS_READ		= (1 << 1),

	FCNVME_CMD_FLAGS_PICWP		= (1 << 2),
};

enum {
	FCNVME_CMD_CAT_MASK		= 0x0F,
	FCNVME_CMD_CAT_ADMINQ		= 0x01,
	FCNVME_CMD_CAT_CSSMASK		= 0x07,
	FCNVME_CMD_CAT_CSSFLAG		= 0x08,
};

static inline __u8 fccmnd_set_cat_admin(__u8 rsv_cat)
{
	return (rsv_cat & ~FCNVME_CMD_CAT_MASK) | FCNVME_CMD_CAT_ADMINQ;
}

static inline __u8 fccmnd_set_cat_css(__u8 rsv_cat, __u8 css)
{
	return (rsv_cat & ~FCNVME_CMD_CAT_MASK) | FCNVME_CMD_CAT_CSSFLAG |
		(css & FCNVME_CMD_CAT_CSSMASK);
}

struct nvme_fc_cmd_iu {
	__u8			format_id;
	__u8			fc_id;
	__be16			iu_len;
	__u8			rsvd4[2];
	__u8			rsv_cat;
	__u8			flags;
	__be64			connection_id;
	__be32			csn;
	__be32			data_len;
	struct nvme_command	sqe;
	__u8			dps;
	__u8			lbads;
	__be16			ms;
	__be32			rsvd92;
};

#define NVME_FC_SIZEOF_ZEROS_RSP	12

enum {
	FCNVME_SC_SUCCESS		= 0,
	FCNVME_SC_INVALID_FIELD		= 1,
	/* reserved			  2 */
	FCNVME_SC_ILL_CONN_PARAMS	= 3,
};

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


#define FCNVME_NVME_SR_OPCODE		0x01
#define FCNVME_NVME_SR_RSP_OPCODE	0x02

struct nvme_fc_nvme_sr_iu {
	__u8			fc_id;
	__u8			opcode;
	__u8			rsvd2;
	__u8			retry_rctl;
	__be32			rsvd4;
};


enum {
	FCNVME_SRSTAT_ACC		= 0x0,
	/* reserved			  0x1 */
	/* reserved			  0x2 */
	FCNVME_SRSTAT_LOGICAL_ERR	= 0x3,
	FCNVME_SRSTAT_INV_QUALIF	= 0x4,
	FCNVME_SRSTAT_UNABL2PERFORM	= 0x9,
};

struct nvme_fc_nvme_sr_rsp_iu {
	__u8			fc_id;
	__u8			opcode;
	__u8			rsvd2;
	__u8			status;
	__be32			rsvd4;
};


/* FC-NVME Link Services - LS cmd values (w0 bits 31:24) */
enum {
	FCNVME_LS_RSVD			= 0,
	FCNVME_LS_RJT			= 1,
	FCNVME_LS_ACC			= 2,
	FCNVME_LS_CREATE_ASSOCIATION	= 3,	/* Create Association */
	FCNVME_LS_CREATE_CONNECTION	= 4,	/* Create I/O Connection */
	FCNVME_LS_DISCONNECT_ASSOC	= 5,	/* Disconnect Association */
	FCNVME_LS_DISCONNECT_CONN	= 6,	/* Disconnect Connection */
};

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

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

	FCNVME_RJT_RC_INV_PARAM		= 0x42,
	/* Invalid Parameters */

	FCNVME_RJT_RC_INSUF_RES		= 0x43,
	/* Insufficient Resources */

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

/* FC-NVME LS RJT reason_expla