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 #include "qla_dsd.h" 17 18 /* default dev loss time (seconds) before transport tears down ctrl */ 19 #define NVME_FC_DEV_LOSS_TMO 30 20 21 #define NVME_ATIO_CMD_OFF 32 22 #define NVME_FIRST_PACKET_CMDLEN (64 - NVME_ATIO_CMD_OFF) 23 #define Q2T_NVME_NUM_TAGS 2048 24 #define QLA_MAX_FC_SEGMENTS 64 25 26 struct scsi_qla_host; 27 struct qla_hw_data; 28 struct req_que; 29 struct srb; 30 31 struct nvme_private { 32 struct srb *sp; 33 struct nvmefc_ls_req *fd; 34 struct work_struct ls_work; 35 struct work_struct abort_work; 36 int comp_status; 37 }; 38 39 struct qla_nvme_rport { 40 struct list_head list; 41 struct fc_port *fcport; 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 uint16_t nport_handle; /* N_PORT handle. */ 53 uint16_t timeout; /* Command timeout. */ 54 55 uint16_t dseg_count; /* Data segment count. */ 56 uint16_t nvme_rsp_dsd_len; /* NVMe RSP DSD length */ 57 58 uint64_t rsvd; 59 60 uint16_t control_flags; /* Control Flags */ 61 #define CF_NVME_FIRST_BURST_ENABLE BIT_11 62 #define CF_DIF_SEG_DESCR_ENABLE BIT_3 63 #define CF_DATA_SEG_DESCR_ENABLE BIT_2 64 #define CF_READ_DATA BIT_1 65 #define CF_WRITE_DATA BIT_0 66 67 uint16_t nvme_cmnd_dseg_len; /* Data segment length. */ 68 uint32_t nvme_cmnd_dseg_address[2]; /* Data segment address. */ 69 uint32_t nvme_rsp_dseg_address[2]; /* Data segment address. */ 70 71 uint32_t byte_count; /* Total byte count. */ 72 73 uint8_t port_id[3]; /* PortID of destination port. */ 74 uint8_t vp_index; 75 76 struct dsd64 nvme_dsd; 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 struct dsd64 dsd[2]; 105 }; 106 107 #define PT_LS4_UNSOL 0x56 /* pass-up unsolicited rec FC-NVMe request */ 108 struct pt_ls4_rx_unsol { 109 uint8_t entry_type; 110 uint8_t entry_count; 111 uint16_t rsvd0; 112 uint16_t rsvd1; 113 uint8_t vp_index; 114 uint8_t rsvd2; 115 uint16_t rsvd3; 116 uint16_t nport_handle; 117 uint16_t frame_size; 118 uint16_t rsvd4; 119 uint32_t exchange_address; 120 uint8_t d_id[3]; 121 uint8_t r_ctl; 122 uint8_t s_id[3]; 123 uint8_t cs_ctl; 124 uint8_t f_ctl[3]; 125 uint8_t type; 126 uint16_t seq_cnt; 127 uint8_t df_ctl; 128 uint8_t seq_id; 129 uint16_t rx_id; 130 uint16_t ox_id; 131 uint32_t param; 132 uint32_t desc0; 133 #define PT_LS4_PAYLOAD_OFFSET 0x2c 134 #define PT_LS4_FIRST_PACKET_LEN 20 135 uint32_t desc_len; 136 uint32_t payload[3]; 137 }; 138 139 /* 140 * Global functions prototype in qla_nvme.c source file. 141 */ 142 int qla_nvme_register_hba(struct scsi_qla_host *); 143 int qla_nvme_register_remote(struct scsi_qla_host *, struct fc_port *); 144 void qla_nvme_delete(struct scsi_qla_host *); 145 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *, struct pt_ls4_request *, 146 struct req_que *); 147 void qla24xx_async_gffid_sp_done(void *, int); 148 #endif 149