2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2017 QLogic Corporation
5 * See LICENSE.qla2xxx for copyright and licensing details.
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>
18 /* default dev loss time (seconds) before transport tears down ctrl */
19 #define NVME_FC_DEV_LOSS_TMO 30
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
33 struct nvmefc_ls_req *fd;
34 struct work_struct ls_work;
35 struct work_struct abort_work;
40 struct qla_nvme_rport {
41 struct fc_port *fcport;
44 #define COMMAND_NVME 0x88 /* Command Type FC-NVMe IOCB */
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. */
51 uint32_t handle; /* System handle. */
52 uint16_t nport_handle; /* N_PORT handle. */
53 uint16_t timeout; /* Command timeout. */
55 uint16_t dseg_count; /* Data segment count. */
56 uint16_t nvme_rsp_dsd_len; /* NVMe RSP DSD length */
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
67 uint16_t nvme_cmnd_dseg_len; /* Data segment length. */
68 __le64 nvme_cmnd_dseg_address __packed;/* Data segment address. */
69 __le64 nvme_rsp_dseg_address __packed; /* Data segment address. */
71 uint32_t byte_count; /* Total byte count. */
73 uint8_t port_id[3]; /* PortID of destination port. */
76 struct dsd64 nvme_dsd;
79 #define PT_LS4_REQUEST 0x89 /* Link Service pass-through IOCB (request) */
80 struct pt_ls4_request {
87 uint16_t nport_handle;
88 uint16_t tx_dseg_count;
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
98 uint16_t rx_dseg_count;
100 uint32_t exchange_address;
102 uint32_t rx_byte_count;
103 uint32_t tx_byte_count;
107 #define PT_LS4_UNSOL 0x56 /* pass-up unsolicited rec FC-NVMe request */
108 struct pt_ls4_rx_unsol {
116 uint16_t nport_handle;
119 uint32_t exchange_address;
133 #define PT_LS4_PAYLOAD_OFFSET 0x2c
134 #define PT_LS4_FIRST_PACKET_LEN 20
140 * Global functions prototype in qla_nvme.c source file.
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 *,
147 void qla24xx_async_gffid_sp_done(void *, int);