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#define NVME_ATIO_CMD_OFF 32 16#define NVME_FIRST_PACKET_CMDLEN (64 - NVME_ATIO_CMD_OFF) 17#define Q2T_NVME_NUM_TAGS 2048 18#define QLA_MAX_FC_SEGMENTS 64 19 20struct srb; 21struct nvme_private { 22 struct srb *sp; 23 struct nvmefc_ls_req *fd; 24 struct work_struct ls_work; 25 int comp_status; 26}; 27 28struct nvme_rport { 29 struct nvme_fc_port_info req; 30 struct list_head list; 31 struct fc_port *fcport; 32}; 33 34#define COMMAND_NVME 0x88 /* Command Type FC-NVMe IOCB */ 35struct cmd_nvme { 36 uint8_t entry_type; /* Entry type. */ 37 uint8_t entry_count; /* Entry count. */ 38 uint8_t sys_define; /* System defined. */ 39 uint8_t entry_status; /* Entry Status. */ 40 41 uint32_t handle; /* System handle. */ 42 uint16_t nport_handle; /* N_PORT handle. */ 43 uint16_t timeout; /* Command timeout. */ 44 45 uint16_t dseg_count; /* Data segment count. */ 46 uint16_t nvme_rsp_dsd_len; /* NVMe RSP DSD length */ 47 48 uint64_t rsvd; 49 50 uint16_t control_flags; /* Control Flags */ 51#define CF_NVME_ENABLE BIT_9 52#define CF_DIF_SEG_DESCR_ENABLE BIT_3 53#define CF_DATA_SEG_DESCR_ENABLE BIT_2 54#define CF_READ_DATA BIT_1 55#define CF_WRITE_DATA BIT_0 56 57 uint16_t nvme_cmnd_dseg_len; /* Data segment length. */ 58 uint32_t nvme_cmnd_dseg_address[2]; /* Data segment address. */ 59 uint32_t nvme_rsp_dseg_address[2]; /* Data segment address. */ 60 61 uint32_t byte_count; /* Total byte count. */ 62 63 uint8_t port_id[3]; /* PortID of destination port. */ 64 uint8_t vp_index; 65 66 uint32_t nvme_data_dseg_address[2]; /* Data segment address. */ 67 uint32_t nvme_data_dseg_len; /* Data segment length. */ 68}; 69 70#define PT_LS4_REQUEST 0x89 /* Link Service pass-through IOCB (request) */ 71struct pt_ls4_request { 72 uint8_t entry_type; 73 uint8_t entry_count; 74 uint8_t sys_define; 75 uint8_t entry_status; 76 uint32_t handle; 77 uint16_t status; 78 uint16_t nport_handle; 79 uint16_t tx_dseg_count; 80 uint8_t vp_index; 81 uint8_t rsvd; 82 uint16_t timeout; 83 uint16_t control_flags; 84#define CF_LS4_SHIFT 13 85#define CF_LS4_ORIGINATOR 0 86#define CF_LS4_RESPONDER 1 87#define CF_LS4_RESPONDER_TERM 2 88 89 uint16_t rx_dseg_count; 90 uint16_t rsvd2; 91 uint32_t exchange_address; 92 uint32_t rsvd3; 93 uint32_t rx_byte_count; 94 uint32_t tx_byte_count; 95 uint32_t dseg0_address[2]; 96 uint32_t dseg0_len; 97 uint32_t dseg1_address[2]; 98 uint32_t dseg1_len; 99}; 100 101#define PT_LS4_UNSOL 0x56 /* pass-up unsolicited rec FC-NVMe request */ 102struct pt_ls4_rx_unsol { 103 uint8_t entry_type; 104 uint8_t entry_count; 105 uint16_t rsvd0; 106 uint16_t rsvd1; 107 uint8_t vp_index; 108 uint8_t rsvd2; 109 uint16_t rsvd3; 110 uint16_t nport_handle; 111 uint16_t frame_size; 112 uint16_t rsvd4; 113 uint32_t exchange_address; 114 uint8_t d_id[3]; 115 uint8_t r_ctl; 116 uint8_t s_id[3]; 117 uint8_t cs_ctl; 118 uint8_t f_ctl[3]; 119 uint8_t type; 120 uint16_t seq_cnt; 121 uint8_t df_ctl; 122 uint8_t seq_id; 123 uint16_t rx_id; 124 uint16_t ox_id; 125 uint32_t param; 126 uint32_t desc0; 127#define PT_LS4_PAYLOAD_OFFSET 0x2c 128#define PT_LS4_FIRST_PACKET_LEN 20 129 uint32_t desc_len; 130 uint32_t payload[3]; 131}; 132#endif 133