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