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