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 151