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 145