1 /* 2 * QLogic Fibre Channel HBA Driver 3 * Copyright (c) 2003-2017 QLogic Corporation 4 * 5 * See LICENSE.qla2xxx for copyright and licensing details. 6 */ 7 #ifndef __QLA_NVME_H 8 #define __QLA_NVME_H 9 10 #include <linux/blk-mq.h> 11 #include <uapi/scsi/fc/fc_fs.h> 12 #include <uapi/scsi/fc/fc_els.h> 13 #include <linux/nvme-fc-driver.h> 14 15 #include "qla_def.h" 16 17 /* default dev loss time (seconds) before transport tears down ctrl */ 18 #define NVME_FC_DEV_LOSS_TMO 30 19 20 #define NVME_ATIO_CMD_OFF 32 21 #define NVME_FIRST_PACKET_CMDLEN (64 - NVME_ATIO_CMD_OFF) 22 #define Q2T_NVME_NUM_TAGS 2048 23 #define QLA_MAX_FC_SEGMENTS 64 24 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 }; 37 38 struct qla_nvme_rport { 39 struct list_head list; 40 struct fc_port *fcport; 41 }; 42 43 #define COMMAND_NVME 0x88 /* Command Type FC-NVMe IOCB */ 44 struct cmd_nvme { 45 uint8_t entry_type; /* Entry type. */ 46 uint8_t entry_count; /* Entry count. */ 47 uint8_t sys_define; /* System defined. */ 48 uint8_t entry_status; /* Entry Status. */ 49 50 uint32_t handle; /* System handle. */ 51 uint16_t nport_handle; /* N_PORT handle. */ 52 uint16_t timeout; /* Command timeout. */ 53 54 uint16_t dseg_count; /* Data segment count. */ 55 uint16_t nvme_rsp_dsd_len; /* NVMe RSP DSD length */ 56 57 uint64_t rsvd; 58 59 uint16_t control_flags; /* Control Flags */ 60 #define CF_NVME_FIRST_BURST_ENABLE BIT_11 61 #define CF_DIF_SEG_DESCR_ENABLE BIT_3 62 #define CF_DATA_SEG_DESCR_ENABLE BIT_2 63 #define CF_READ_DATA BIT_1 64 #define CF_WRITE_DATA BIT_0 65 66 uint16_t nvme_cmnd_dseg_len; /* Data segment length. */ 67 uint32_t nvme_cmnd_dseg_address[2]; /* Data segment address. */ 68 uint32_t nvme_rsp_dseg_address[2]; /* Data segment address. */ 69 70 uint32_t byte_count; /* Total byte count. */ 71 72 uint8_t port_id[3]; /* PortID of destination port. */ 73 uint8_t vp_index; 74 75 uint32_t nvme_data_dseg_address[2]; /* Data segment address. */ 76 uint32_t nvme_data_dseg_len; /* Data segment length. */ 77 }; 78 79 #define PT_LS4_REQUEST 0x89 /* Link Service pass-through IOCB (request) */ 80 struct pt_ls4_request { 81 uint8_t entry_type; 82 uint8_t entry_count; 83 uint8_t sys_define; 84 uint8_t entry_status; 85 uint32_t handle; 86 uint16_t status; 87 uint16_t nport_handle; 88 uint16_t tx_dseg_count; 89 uint8_t vp_index; 90 uint8_t rsvd; 91 uint16_t timeout; 92 uint16_t control_flags; 93 #define CF_LS4_SHIFT 13 94 #define CF_LS4_ORIGINATOR 0 95 #define CF_LS4_RESPONDER 1 96 #define CF_LS4_RESPONDER_TERM 2 97 98 uint16_t rx_dseg_count; 99 uint16_t rsvd2; 100 uint32_t exchange_address; 101 uint32_t rsvd3; 102 uint32_t rx_byte_count; 103 uint32_t tx_byte_count; 104 uint32_t dseg0_address[2]; 105 uint32_t dseg0_len; 106 uint32_t dseg1_address[2]; 107 uint32_t dseg1_len; 108 }; 109 110 #define PT_LS4_UNSOL 0x56 /* pass-up unsolicited rec FC-NVMe request */ 111 struct pt_ls4_rx_unsol { 112 uint8_t entry_type; 113 uint8_t entry_count; 114 uint16_t rsvd0; 115 uint16_t rsvd1; 116 uint8_t vp_index; 117 uint8_t rsvd2; 118 uint16_t rsvd3; 119 uint16_t nport_handle; 120 uint16_t frame_size; 121 uint16_t rsvd4; 122 uint32_t exchange_address; 123 uint8_t d_id[3]; 124 uint8_t r_ctl; 125 uint8_t s_id[3]; 126 uint8_t cs_ctl; 127 uint8_t f_ctl[3]; 128 uint8_t type; 129 uint16_t seq_cnt; 130 uint8_t df_ctl; 131 uint8_t seq_id; 132 uint16_t rx_id; 133 uint16_t ox_id; 134 uint32_t param; 135 uint32_t desc0; 136 #define PT_LS4_PAYLOAD_OFFSET 0x2c 137 #define PT_LS4_FIRST_PACKET_LEN 20 138 uint32_t desc_len; 139 uint32_t payload[3]; 140 }; 141 142 /* 143 * Global functions prototype in qla_nvme.c source file. 144 */ 145 int qla_nvme_register_hba(struct scsi_qla_host *); 146 int qla_nvme_register_remote(struct scsi_qla_host *, struct fc_port *); 147 void qla_nvme_delete(struct scsi_qla_host *); 148 void qla_nvme_abort(struct qla_hw_data *, struct srb *sp, int res); 149 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *, struct pt_ls4_request *, 150 struct req_que *); 151 void qla24xx_async_gffid_sp_done(void *, int); 152 #endif 153