drivers/scsi/qla2xxx/qla_nvme.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * QLogic Fibre Channel HBA Driver
   4  * Copyright (c)  2003-2017 QLogic Corporation
   5  */
   6 #ifndef __QLA_NVME_H
   7 #define __QLA_NVME_H
   8
   9 #include <uapi/scsi/fc/fc_fs.h>
  10 #include <uapi/scsi/fc/fc_els.h>
  11 #include <linux/nvme-fc-driver.h>
  12
  13 #include "qla_def.h"
  14 #include "qla_dsd.h"
  15
  16 #define NVME_ATIO_CMD_OFF 32
  17 #define NVME_FIRST_PACKET_CMDLEN (64 - NVME_ATIO_CMD_OFF)
  18 #define Q2T_NVME_NUM_TAGS 2048
  19 #define QLA_MAX_FC_SEGMENTS 64
  20
  21 struct scsi_qla_host;
  22 struct qla_hw_data;
  23 struct req_que;
  24 struct srb;
  25
  26 struct nvme_private {
  27         struct srb      *sp;
  28         struct nvmefc_ls_req *fd;
  29         struct work_struct ls_work;
  30         struct work_struct abort_work;
  31         int comp_status;
  32         spinlock_t cmd_lock;
  33 };
  34
  35 struct qla_nvme_rport {
  36         struct fc_port *fcport;
  37 };
  38
  39 #define COMMAND_NVME    0x88            /* Command Type FC-NVMe IOCB */
  40 struct cmd_nvme {
  41         uint8_t entry_type;             /* Entry type. */
  42         uint8_t entry_count;            /* Entry count. */
  43         uint8_t sys_define;             /* System defined. */
  44         uint8_t entry_status;           /* Entry Status. */
  45
  46         uint32_t handle;                /* System handle. */
  47         __le16  nport_handle;           /* N_PORT handle. */
  48         __le16  timeout;                /* Command timeout. */
  49
  50         __le16  dseg_count;             /* Data segment count. */
  51         __le16  nvme_rsp_dsd_len;       /* NVMe RSP DSD length */
  52
  53         uint64_t rsvd;
  54
  55         __le16  control_flags;          /* Control Flags */
  56 #define CF_ADMIN_ASYNC_EVENT            BIT_13
  57 #define CF_NVME_FIRST_BURST_ENABLE      BIT_11
  58 #define CF_DIF_SEG_DESCR_ENABLE         BIT_3
  59 #define CF_DATA_SEG_DESCR_ENABLE        BIT_2
  60 #define CF_READ_DATA                    BIT_1
  61 #define CF_WRITE_DATA                   BIT_0
  62
  63         __le16  nvme_cmnd_dseg_len;             /* Data segment length. */
  64         __le64   nvme_cmnd_dseg_address __packed;/* Data segment address. */
  65         __le64   nvme_rsp_dseg_address __packed; /* Data segment address. */
  66
  67         __le32  byte_count;             /* Total byte count. */
  68
  69         uint8_t port_id[3];             /* PortID of destination port. */
  70         uint8_t vp_index;
  71
  72         struct dsd64 nvme_dsd;
  73 };
  74
  75 #define PT_LS4_REQUEST 0x89     /* Link Service pass-through IOCB (request) */
  76 struct pt_ls4_request {
  77         uint8_t entry_type;
  78         uint8_t entry_count;
  79         uint8_t sys_define;
  80         uint8_t entry_status;
  81         uint32_t handle;
  82         __le16  status;
  83         __le16  nport_handle;
  84         __le16  tx_dseg_count;
  85         uint8_t  vp_index;
  86         uint8_t  rsvd;
  87         __le16  timeout;
  88         __le16  control_flags;
  89 #define CF_LS4_SHIFT            13
  90 #define CF_LS4_ORIGINATOR       0
  91 #define CF_LS4_RESPONDER        1
  92 #define CF_LS4_RESPONDER_TERM   2
  93
  94         __le16  rx_dseg_count;
  95         __le16  rsvd2;
  96         __le32  exchange_address;
  97         __le32  rsvd3;
  98         __le32  rx_byte_count;
  99         __le32  tx_byte_count;
 100         struct dsd64 dsd[2];
 101 };
 102
 103 #define PT_LS4_UNSOL 0x56       /* pass-up unsolicited rec FC-NVMe request */
 104 struct pt_ls4_rx_unsol {
 105         uint8_t entry_type;
 106         uint8_t entry_count;
 107         __le16  rsvd0;
 108         __le16  rsvd1;
 109         uint8_t vp_index;
 110         uint8_t rsvd2;
 111         __le16  rsvd3;
 112         __le16  nport_handle;
 113         __le16  frame_size;
 114         __le16  rsvd4;
 115         __le32  exchange_address;
 116         uint8_t d_id[3];
 117         uint8_t r_ctl;
 118         be_id_t s_id;
 119         uint8_t cs_ctl;
 120         uint8_t f_ctl[3];
 121         uint8_t type;
 122         __le16  seq_cnt;
 123         uint8_t df_ctl;
 124         uint8_t seq_id;
 125         __le16  rx_id;
 126         __le16  ox_id;
 127         __le32  param;
 128         __le32  desc0;
 129 #define PT_LS4_PAYLOAD_OFFSET 0x2c
 130 #define PT_LS4_FIRST_PACKET_LEN 20
 131         __le32  desc_len;
 132         __le32  payload[3];
 133 };
 134
 135 /*
 136  * Global functions prototype in qla_nvme.c source file.
 137  */
 138 int qla_nvme_register_hba(struct scsi_qla_host *);
 139 int  qla_nvme_register_remote(struct scsi_qla_host *, struct fc_port *);
 140 void qla_nvme_delete(struct scsi_qla_host *);
 141 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *, struct pt_ls4_request *,
 142     struct req_que *);
 143 void qla24xx_async_gffid_sp_done(struct srb *sp, int);
 144 #endif