linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (c) 2016 Avago Technologies.  All rights reserved.

 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/module.h>

#include <linux/parser.h>

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

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

#include <linux/delay.h>

#include <linux/overflow.h>

​

#include "nvme.h"

#include "fabrics.h"

#include <linux/nvme-fc-driver.h>

#include <linux/nvme-fc.h>

​

​

/* *************************** Data Structures/Defines ****************** */

​

​

enum nvme_fc_queue_flags {

    NVME_FC_Q_CONNECTED = 0,

    NVME_FC_Q_LIVE,

};

​

#define NVME_FC_DEFAULT_DEV_LOSS_TMO    60  /* seconds */

​

struct nvme_fc_queue {

    struct nvme_fc_ctrl *ctrl;

    struct device       *dev;

    struct blk_mq_hw_ctx    *hctx;

    void            *lldd_handle;

    size_t          cmnd_capsule_len;

    u32         qnum;

    u32         rqcnt;

    u32         seqno;

​

    u64         connection_id;

    atomic_t        csn;

​

    unsigned long       flags;

} __aligned(sizeof(u64));   /* alignment for other things alloc'd with */

​

enum nvme_fcop_flags {

    FCOP_FLAGS_TERMIO   = (1 << 0),

    FCOP_FLAGS_AEN      = (1 << 1),

};

​

struct nvmefc_ls_req_op {

    struct nvmefc_ls_req    ls_req;

​

    struct nvme_fc_rport    *rport;

    struct nvme_fc_queue    *queue;

    struct request      *rq;

    u32         flags;

​

    int         ls_error;

    struct completion   ls_done;

    struct list_head    lsreq_list; /* rport->ls_req_list */

    bool            req_queued;

};

​

enum nvme_fcpop_state {

    FCPOP_STATE_UNINIT  = 0,

    FCPOP_STATE_IDLE    = 1,

    FCPOP_STATE_ACTIVE  = 2,

    FCPOP_STATE_ABORTED = 3,

    FCPOP_STATE_COMPLETE    = 4,

};

​

struct nvme_fc_fcp_op {

    struct nvme_request nreq;       /*

                         * nvme/host/core.c

                         * requires this to be

                         * the 1st element in the

                         * private structure

                         * associated with the

                         * request.

                         */

    struct nvmefc_fcp_req   fcp_req;

​

    struct nvme_fc_ctrl *ctrl;

    struct nvme_fc_queue    *queue;

    struct request      *rq;

​

    atomic_t        state;

    u32         flags;

    u32         rqno;

    u32         nents;

​

    struct nvme_fc_cmd_iu   cmd_iu;