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/*
* QLogic Fibre Channel HBA Driver
* Copyright (c) 2003-2017 QLogic Corporation
*
* See LICENSE.qla2xxx for copyright and licensing details.
*/
#ifndef __QLA_NVME_H
#define __QLA_NVME_H
#include <linux/blk-mq.h>
#include <uapi/scsi/fc/fc_fs.h>
#include <uapi/scsi/fc/fc_els.h>
#include <linux/nvme-fc-driver.h>
#include "qla_def.h"
#include "qla_dsd.h"
/* default dev loss time (seconds) before transport tears down ctrl */
#define NVME_FC_DEV_LOSS_TMO 30
#define NVME_ATIO_CMD_OFF 32
#define NVME_FIRST_PACKET_CMDLEN (64 - NVME_ATIO_CMD_OFF)
#define Q2T_NVME_NUM_TAGS 2048
#define QLA_MAX_FC_SEGMENTS 64
struct scsi_qla_host;
struct qla_hw_data;
struct req_que;
struct srb;
struct nvme_private {
struct srb *sp;
struct nvmefc_ls_req *fd;
struct work_struct ls_work;
struct work_struct abort_work;
int comp_status;
spinlock_t cmd_lock;
};
struct qla_nvme_rport {
struct fc_port *fcport;
};
#define COMMAND_NVME 0x88 /* Command Type FC-NVMe IOCB */
struct cmd_nvme {
uint8_t entry_type; /* Entry type. */
uint8_t entry_count; /* Entry count. */
uint8_t sys_define; /* System defined. */
uint8_t entry_status; /* Entry Status. */
uint32_t handle; /* System handle. */
uint16_t nport_handle; /* N_PORT handle. */
uint16_t timeout; /* Command timeout. */
uint16_t dseg_count; /* Data segment count. */
uint16_t nvme_rsp_dsd_len; /* NVMe RSP DSD length */
uint64_t rsvd;
uint16_t control_flags; /* Control Flags */
#define CF_NVME_FIRST_BURST_ENABLE BIT_11
#define CF_DIF_SEG_DESCR_ENABLE BIT_3
#define CF_DATA_SEG_DESCR_ENABLE BIT_2
#define CF_READ_DATA BIT_1
#define CF_WRITE_DATA BIT_0
uint16_t nvme_cmnd_dseg_len; /* Data segment length. */
__le64 nvme_cmnd_dseg_address __packed;/* Data segment address. */
__le64 nvme_rsp_dseg_address __packed; /* Data segment address. */
uint32_t byte_count; /* Total byte count. */
uint8_t port_id[3]; /* PortID of destination port. */
uint8_t vp_index;
struct dsd64 nvme_dsd;
};
#define PT_LS4_REQUEST 0x89 /* Link Service pass-through IOCB (request) */
struct pt_ls4_request {
uint8_t entry_type;
uint8_t entry_count;
uint8_t sys_define;
uint8_t entry_status;
uint32_t handle;
uint16_t status;
uint16_t nport_handle;
uint16_t tx_dseg_count;
uint8_t vp_index;
uint8_t rsvd;
uint16_t timeout;
uint16_t control_flags;
#define CF_LS4_SHIFT 13
#define CF_LS4_ORIGINATOR 0
#define CF_LS4_RESPONDER 1
#define CF_LS4_RESPONDER_TERM 2
uint16_t rx_dseg_count;
uint16_t rsvd2;
uint32_t exchange_address;
uint32_t rsvd3;
uint32_t rx_byte_count;
uint32_t tx_byte_count;
struct dsd64 dsd[2];
};
#define PT_LS4_UNSOL 0x56 /* pass-up unsolicited rec FC-NVMe request */
struct pt_ls4_rx_unsol {
uint8_t entry_type;
uint8_t entry_count;
uint16_t rsvd0;
uint16_t rsvd1;
uint8_t vp_index;
uint8_t rsvd2;
uint16_t rsvd3;
uint16_t nport_handle;
uint16_t frame_size;
uint16_t rsvd4;
uint32_t exchange_address;
uint8_t d_id[3];
uint8_t r_ctl;
uint8_t s_id[3];
uint8_t cs_ctl;
uint8_t f_ctl[3];
uint8_t type;
uint16_t seq_cnt;
uint8_t df_ctl;
uint8_t seq_id;
uint16_t rx_id;
uint16_t ox_id;
uint32_t param;
uint32_t desc0;
#define PT_LS4_PAYLOAD_OFFSET 0x2c
#define PT_LS4_FIRST_PACKET_LEN 20
uint32_t desc_len;
uint32_t payload[3];
};
/*
* Global functions prototype in qla_nvme.c source file.
*/
int qla_nvme_register_hba(struct scsi_qla_host *);
int qla_nvme_register_remote(struct scsi_qla_host *, struct fc_port *);
void qla_nvme_delete(struct scsi_qla_host *);
void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *, struct pt_ls4_request *,
struct req_que *);
void qla24xx_async_gffid_sp_done(void *, int);
#endif
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