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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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df95f39ae7
Introduce the be_id_t and le_id_t data types for Fibre Channel source and destination ID formats supported by the firmware instead of using an uint8_t[3] array. Introduce functions for converting from and to the port_id_t data types. This patch does not change the behavior of the qla2xxx driver but improves source code readability and also allows the compiler to verify the endianness of Fibre Channel IDs. Cc: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Tested-by: Himanshu Madhani <hmadhani@marvell.com> Reviewed-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
149 lines
3.8 KiB
C
149 lines
3.8 KiB
C
/*
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* QLogic Fibre Channel HBA Driver
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* Copyright (c) 2003-2017 QLogic Corporation
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*
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* See LICENSE.qla2xxx for copyright and licensing details.
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*/
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#ifndef __QLA_NVME_H
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#define __QLA_NVME_H
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#include <linux/blk-mq.h>
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#include <uapi/scsi/fc/fc_fs.h>
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#include <uapi/scsi/fc/fc_els.h>
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#include <linux/nvme-fc-driver.h>
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#include "qla_def.h"
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#include "qla_dsd.h"
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/* default dev loss time (seconds) before transport tears down ctrl */
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#define NVME_FC_DEV_LOSS_TMO 30
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#define NVME_ATIO_CMD_OFF 32
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#define NVME_FIRST_PACKET_CMDLEN (64 - NVME_ATIO_CMD_OFF)
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#define Q2T_NVME_NUM_TAGS 2048
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#define QLA_MAX_FC_SEGMENTS 64
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struct scsi_qla_host;
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struct qla_hw_data;
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struct req_que;
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struct srb;
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struct nvme_private {
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struct srb *sp;
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struct nvmefc_ls_req *fd;
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struct work_struct ls_work;
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struct work_struct abort_work;
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int comp_status;
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spinlock_t cmd_lock;
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};
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struct qla_nvme_rport {
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struct fc_port *fcport;
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};
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#define COMMAND_NVME 0x88 /* Command Type FC-NVMe IOCB */
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struct cmd_nvme {
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uint8_t entry_type; /* Entry type. */
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uint8_t entry_count; /* Entry count. */
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uint8_t sys_define; /* System defined. */
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uint8_t entry_status; /* Entry Status. */
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uint32_t handle; /* System handle. */
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uint16_t nport_handle; /* N_PORT handle. */
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uint16_t timeout; /* Command timeout. */
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uint16_t dseg_count; /* Data segment count. */
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uint16_t nvme_rsp_dsd_len; /* NVMe RSP DSD length */
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uint64_t rsvd;
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uint16_t control_flags; /* Control Flags */
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#define CF_NVME_FIRST_BURST_ENABLE BIT_11
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#define CF_DIF_SEG_DESCR_ENABLE BIT_3
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#define CF_DATA_SEG_DESCR_ENABLE BIT_2
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#define CF_READ_DATA BIT_1
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#define CF_WRITE_DATA BIT_0
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uint16_t nvme_cmnd_dseg_len; /* Data segment length. */
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__le64 nvme_cmnd_dseg_address __packed;/* Data segment address. */
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__le64 nvme_rsp_dseg_address __packed; /* Data segment address. */
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uint32_t byte_count; /* Total byte count. */
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uint8_t port_id[3]; /* PortID of destination port. */
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uint8_t vp_index;
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struct dsd64 nvme_dsd;
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};
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#define PT_LS4_REQUEST 0x89 /* Link Service pass-through IOCB (request) */
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struct pt_ls4_request {
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uint8_t entry_type;
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uint8_t entry_count;
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uint8_t sys_define;
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uint8_t entry_status;
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uint32_t handle;
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uint16_t status;
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uint16_t nport_handle;
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uint16_t tx_dseg_count;
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uint8_t vp_index;
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uint8_t rsvd;
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uint16_t timeout;
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uint16_t control_flags;
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#define CF_LS4_SHIFT 13
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#define CF_LS4_ORIGINATOR 0
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#define CF_LS4_RESPONDER 1
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#define CF_LS4_RESPONDER_TERM 2
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uint16_t rx_dseg_count;
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uint16_t rsvd2;
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uint32_t exchange_address;
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uint32_t rsvd3;
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uint32_t rx_byte_count;
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uint32_t tx_byte_count;
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struct dsd64 dsd[2];
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};
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#define PT_LS4_UNSOL 0x56 /* pass-up unsolicited rec FC-NVMe request */
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struct pt_ls4_rx_unsol {
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uint8_t entry_type;
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uint8_t entry_count;
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uint16_t rsvd0;
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uint16_t rsvd1;
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uint8_t vp_index;
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uint8_t rsvd2;
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uint16_t rsvd3;
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uint16_t nport_handle;
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uint16_t frame_size;
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uint16_t rsvd4;
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uint32_t exchange_address;
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uint8_t d_id[3];
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uint8_t r_ctl;
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be_id_t s_id;
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uint8_t cs_ctl;
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uint8_t f_ctl[3];
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uint8_t type;
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uint16_t seq_cnt;
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uint8_t df_ctl;
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uint8_t seq_id;
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uint16_t rx_id;
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uint16_t ox_id;
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uint32_t param;
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uint32_t desc0;
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#define PT_LS4_PAYLOAD_OFFSET 0x2c
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#define PT_LS4_FIRST_PACKET_LEN 20
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uint32_t desc_len;
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uint32_t payload[3];
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};
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/*
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* Global functions prototype in qla_nvme.c source file.
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*/
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int qla_nvme_register_hba(struct scsi_qla_host *);
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int qla_nvme_register_remote(struct scsi_qla_host *, struct fc_port *);
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void qla_nvme_delete(struct scsi_qla_host *);
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void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *, struct pt_ls4_request *,
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struct req_que *);
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void qla24xx_async_gffid_sp_done(void *, int);
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#endif
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