scsi/qla2xxx/qla_nvme.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * QLogic Fibre Channel HBA Driver
0004  * Copyright (c)  2003-2017 QLogic Corporation
0005  */
0006 #ifndef __QLA_NVME_H
0007 #define __QLA_NVME_H
0008
0009 #include <uapi/scsi/fc/fc_fs.h>
0010 #include <uapi/scsi/fc/fc_els.h>
0011 #include <linux/nvme-fc-driver.h>
0012
0013 #include "qla_def.h"
0014 #include "qla_dsd.h"
0015
0016 #define MIN_NVME_HW_QUEUES 1
0017 #define DEF_NVME_HW_QUEUES 8
0018
0019 #define NVME_ATIO_CMD_OFF 32
0020 #define NVME_FIRST_PACKET_CMDLEN (64 - NVME_ATIO_CMD_OFF)
0021 #define Q2T_NVME_NUM_TAGS 2048
0022 #define QLA_MAX_FC_SEGMENTS 64
0023
0024 struct scsi_qla_host;
0025 struct qla_hw_data;
0026 struct req_que;
0027 struct srb;
0028
0029 struct nvme_private {
0030     struct srb  *sp;
0031     struct nvmefc_ls_req *fd;
0032     struct work_struct ls_work;
0033     struct work_struct abort_work;
0034     int comp_status;
0035     spinlock_t cmd_lock;
0036 };
0037
0038 struct qla_nvme_rport {
0039     struct fc_port *fcport;
0040 };
0041
0042 #define COMMAND_NVME    0x88            /* Command Type FC-NVMe IOCB */
0043 struct cmd_nvme {
0044     uint8_t entry_type;             /* Entry type. */
0045     uint8_t entry_count;            /* Entry count. */
0046     uint8_t sys_define;             /* System defined. */
0047     uint8_t entry_status;           /* Entry Status. */
0048
0049     uint32_t handle;                /* System handle. */
0050     __le16  nport_handle;       /* N_PORT handle. */
0051     __le16  timeout;        /* Command timeout. */
0052
0053     __le16  dseg_count;     /* Data segment count. */
0054     __le16  nvme_rsp_dsd_len;   /* NVMe RSP DSD length */
0055
0056     uint64_t rsvd;
0057
0058     __le16  control_flags;      /* Control Flags */
0059 #define CF_ADMIN_ASYNC_EVENT        BIT_13
0060 #define CF_NVME_FIRST_BURST_ENABLE  BIT_11
0061 #define CF_DIF_SEG_DESCR_ENABLE         BIT_3
0062 #define CF_DATA_SEG_DESCR_ENABLE        BIT_2
0063 #define CF_READ_DATA                    BIT_1
0064 #define CF_WRITE_DATA                   BIT_0
0065
0066     __le16  nvme_cmnd_dseg_len;             /* Data segment length. */
0067     __le64   nvme_cmnd_dseg_address __packed;/* Data segment address. */
0068     __le64   nvme_rsp_dseg_address __packed; /* Data segment address. */
0069
0070     __le32  byte_count;     /* Total byte count. */
0071
0072     uint8_t port_id[3];             /* PortID of destination port. */
0073     uint8_t vp_index;
0074
0075     struct dsd64 nvme_dsd;
0076 };
0077
0078 #define PT_LS4_REQUEST 0x89 /* Link Service pass-through IOCB (request) */
0079 struct pt_ls4_request {
0080     uint8_t entry_type;
0081     uint8_t entry_count;
0082     uint8_t sys_define;
0083     uint8_t entry_status;
0084     uint32_t handle;
0085     __le16  status;
0086     __le16  nport_handle;
0087     __le16  tx_dseg_count;
0088     uint8_t  vp_index;
0089     uint8_t  rsvd;
0090     __le16  timeout;
0091     __le16  control_flags;
0092 #define CF_LS4_SHIFT        13
0093 #define CF_LS4_ORIGINATOR   0
0094 #define CF_LS4_RESPONDER    1
0095 #define CF_LS4_RESPONDER_TERM   2
0096
0097     __le16  rx_dseg_count;
0098     __le16  rsvd2;
0099     __le32  exchange_address;
0100     __le32  rsvd3;
0101     __le32  rx_byte_count;
0102     __le32  tx_byte_count;
0103     struct dsd64 dsd[2];
0104 };
0105
0106 #define PT_LS4_UNSOL 0x56   /* pass-up unsolicited rec FC-NVMe request */
0107 struct pt_ls4_rx_unsol {
0108     uint8_t entry_type;
0109     uint8_t entry_count;
0110     __le16  rsvd0;
0111     __le16  rsvd1;
0112     uint8_t vp_index;
0113     uint8_t rsvd2;
0114     __le16  rsvd3;
0115     __le16  nport_handle;
0116     __le16  frame_size;
0117     __le16  rsvd4;
0118     __le32  exchange_address;
0119     uint8_t d_id[3];
0120     uint8_t r_ctl;
0121     be_id_t s_id;
0122     uint8_t cs_ctl;
0123     uint8_t f_ctl[3];
0124     uint8_t type;
0125     __le16  seq_cnt;
0126     uint8_t df_ctl;
0127     uint8_t seq_id;
0128     __le16  rx_id;
0129     __le16  ox_id;
0130     __le32  param;
0131     __le32  desc0;
0132 #define PT_LS4_PAYLOAD_OFFSET 0x2c
0133 #define PT_LS4_FIRST_PACKET_LEN 20
0134     __le32  desc_len;
0135     __le32  payload[3];
0136 };
0137
0138 /*
0139  * Global functions prototype in qla_nvme.c source file.
0140  */
0141 int qla_nvme_register_hba(struct scsi_qla_host *);
0142 int  qla_nvme_register_remote(struct scsi_qla_host *, struct fc_port *);
0143 void qla_nvme_delete(struct scsi_qla_host *);
0144 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *, struct pt_ls4_request *,
0145     struct req_que *);
0146 void qla24xx_async_gffid_sp_done(struct srb *sp, int);
0147 #endif