558 lines
16 KiB
C
Executable file
558 lines
16 KiB
C
Executable file
/*
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* QLogic FCoE Offload Driver
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* Copyright (c) 2016-2018 Cavium Inc.
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*
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* This software is available under the terms of the GNU General Public License
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* (GPL) Version 2, available from the file COPYING in the main directory of
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* this source tree.
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*/
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#ifndef _QEDFC_H_
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#define _QEDFC_H_
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#include <scsi/libfcoe.h>
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#include <scsi/libfc.h>
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#include <scsi/fc/fc_fip.h>
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#include <scsi/fc/fc_fc2.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/fc_encode.h>
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#include <linux/version.h>
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/* qedf_hsi.h needs to before included any qed includes */
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#include "qedf_hsi.h"
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#include <linux/qed/qed_if.h>
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#include <linux/qed/qed_fcoe_if.h>
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#include <linux/qed/qed_ll2_if.h>
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#include "qedf_version.h"
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#include "qedf_dbg.h"
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#include "drv_fcoe_fw_funcs.h"
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/* Helpers to extract upper and lower 32-bits of pointer */
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#define U64_HI(val) ((u32)(((u64)(val)) >> 32))
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#define U64_LO(val) ((u32)(((u64)(val)) & 0xffffffff))
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#define QEDF_DESCR "QLogic FCoE Offload Driver"
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#define QEDF_MODULE_NAME "qedf"
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#define QEDF_MIN_XID 0
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#define QEDF_MAX_SCSI_XID (NUM_TASKS_PER_CONNECTION - 1)
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#define QEDF_MAX_ELS_XID 4095
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#define QEDF_FLOGI_RETRY_CNT 3
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#define QEDF_RPORT_RETRY_CNT 255
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#define QEDF_MAX_SESSIONS 1024
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#define QEDF_MAX_PAYLOAD 2048
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#define QEDF_MAX_BDS_PER_CMD 256
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#define QEDF_MAX_BD_LEN 0xffff
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#define QEDF_BD_SPLIT_SZ 0x1000
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#define QEDF_PAGE_SIZE 4096
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#define QED_HW_DMA_BOUNDARY 0xfff
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#define QEDF_MAX_SGLEN_FOR_CACHESGL ((1U << 16) - 1)
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#define QEDF_MFS (QEDF_MAX_PAYLOAD + \
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sizeof(struct fc_frame_header))
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#define QEDF_MAX_NPIV 64
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#define QEDF_TM_TIMEOUT 10
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#define QEDF_ABORT_TIMEOUT 10
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#define QEDF_CLEANUP_TIMEOUT 10
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#define QEDF_MAX_CDB_LEN 16
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#define UPSTREAM_REMOVE 1
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#define UPSTREAM_KEEP 1
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struct qedf_mp_req {
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uint32_t req_len;
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void *req_buf;
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dma_addr_t req_buf_dma;
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struct scsi_sge *mp_req_bd;
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dma_addr_t mp_req_bd_dma;
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struct fc_frame_header req_fc_hdr;
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uint32_t resp_len;
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void *resp_buf;
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dma_addr_t resp_buf_dma;
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struct scsi_sge *mp_resp_bd;
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dma_addr_t mp_resp_bd_dma;
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struct fc_frame_header resp_fc_hdr;
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};
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struct qedf_els_cb_arg {
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struct qedf_ioreq *aborted_io_req;
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struct qedf_ioreq *io_req;
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u8 op; /* Used to keep track of ELS op */
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uint16_t l2_oxid;
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u32 offset; /* Used for sequence cleanup */
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u8 r_ctl; /* Used for sequence cleanup */
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};
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enum qedf_ioreq_event {
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QEDF_IOREQ_EV_ABORT_SUCCESS,
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QEDF_IOREQ_EV_ABORT_FAILED,
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QEDF_IOREQ_EV_SEND_RRQ,
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QEDF_IOREQ_EV_ELS_TMO,
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QEDF_IOREQ_EV_ELS_ERR_DETECT,
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QEDF_IOREQ_EV_ELS_FLUSH,
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QEDF_IOREQ_EV_CLEANUP_SUCCESS,
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QEDF_IOREQ_EV_CLEANUP_FAILED,
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};
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#define FC_GOOD 0
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#define FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER (0x1<<2)
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#define FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER (0x1<<3)
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#define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status)
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#define FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID (0x1<<0)
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#define FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID (0x1<<1)
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struct qedf_ioreq {
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struct list_head link;
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uint16_t xid;
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struct scsi_cmnd *sc_cmd;
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bool use_slowpath; /* Use slow SGL for this I/O */
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#define QEDF_SCSI_CMD 1
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#define QEDF_TASK_MGMT_CMD 2
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#define QEDF_ABTS 3
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#define QEDF_ELS 4
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#define QEDF_CLEANUP 5
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#define QEDF_SEQ_CLEANUP 6
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u8 cmd_type;
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#define QEDF_CMD_OUTSTANDING 0x0
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#define QEDF_CMD_IN_ABORT 0x1
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#define QEDF_CMD_IN_CLEANUP 0x2
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#define QEDF_CMD_SRR_SENT 0x3
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u8 io_req_flags;
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uint8_t tm_flags;
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struct qedf_rport *fcport;
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unsigned long flags;
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enum qedf_ioreq_event event;
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size_t data_xfer_len;
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struct kref refcount;
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struct qedf_cmd_mgr *cmd_mgr;
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struct io_bdt *bd_tbl;
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struct delayed_work timeout_work;
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struct completion tm_done;
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struct completion abts_done;
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struct e4_fcoe_task_context *task;
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struct fcoe_task_params *task_params;
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struct scsi_sgl_task_params *sgl_task_params;
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int idx;
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/*
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* Need to allocate enough room for both sense data and FCP response data
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* which has a max length of 8 bytes according to spec.
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*/
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#define QEDF_SCSI_SENSE_BUFFERSIZE (SCSI_SENSE_BUFFERSIZE + 8)
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uint8_t *sense_buffer;
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dma_addr_t sense_buffer_dma;
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u32 fcp_resid;
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u32 fcp_rsp_len;
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u32 fcp_sns_len;
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u8 cdb_status;
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u8 fcp_status;
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u8 fcp_rsp_code;
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u8 scsi_comp_flags;
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#define QEDF_MAX_REUSE 0xfff
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u16 reuse_count;
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struct qedf_mp_req mp_req;
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void (*cb_func)(struct qedf_els_cb_arg *cb_arg);
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struct qedf_els_cb_arg *cb_arg;
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int fp_idx;
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unsigned int cpu;
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unsigned int int_cpu;
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#define QEDF_IOREQ_SLOW_SGE 0
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#define QEDF_IOREQ_SINGLE_SGE 1
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#define QEDF_IOREQ_FAST_SGE 2
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u8 sge_type;
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struct delayed_work rrq_work;
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/* Used for sequence level recovery; i.e. REC/SRR */
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uint32_t rx_buf_off;
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uint32_t tx_buf_off;
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uint32_t rx_id;
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uint32_t task_retry_identifier;
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/*
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* Used to tell if we need to return a SCSI command
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* during some form of error processing.
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*/
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bool return_scsi_cmd_on_abts;
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};
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extern struct workqueue_struct *qedf_io_wq;
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struct qedf_rport {
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spinlock_t rport_lock;
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#define QEDF_RPORT_SESSION_READY 1
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#define QEDF_RPORT_UPLOADING_CONNECTION 2
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#define QEDF_RPORT_IN_RESET 3
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unsigned long flags;
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unsigned long retry_delay_timestamp;
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struct fc_rport *rport;
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struct fc_rport_priv *rdata;
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struct qedf_ctx *qedf;
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u32 handle; /* Handle from qed */
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u32 fw_cid; /* fw_cid from qed */
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void __iomem *p_doorbell;
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/* Send queue management */
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atomic_t free_sqes;
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atomic_t num_active_ios;
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struct fcoe_wqe *sq;
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dma_addr_t sq_dma;
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u16 sq_prod_idx;
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u16 fw_sq_prod_idx;
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u16 sq_con_idx;
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u32 sq_mem_size;
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void *sq_pbl;
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dma_addr_t sq_pbl_dma;
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u32 sq_pbl_size;
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u32 sid;
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#define QEDF_RPORT_TYPE_DISK 0
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#define QEDF_RPORT_TYPE_TAPE 1
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uint dev_type; /* Disk or tape */
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struct list_head peers;
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};
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/* Used to contain LL2 skb's in ll2_skb_list */
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struct qedf_skb_work {
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struct work_struct work;
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struct sk_buff *skb;
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struct qedf_ctx *qedf;
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};
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struct qedf_fastpath {
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#define QEDF_SB_ID_NULL 0xffff
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u16 sb_id;
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struct qed_sb_info *sb_info;
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struct qedf_ctx *qedf;
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/* Keep track of number of completions on this fastpath */
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unsigned long completions;
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uint32_t cq_num_entries;
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};
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/* Used to pass fastpath information needed to process CQEs */
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struct qedf_io_work {
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struct work_struct work;
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struct fcoe_cqe cqe;
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struct qedf_ctx *qedf;
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struct fc_frame *fp;
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};
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struct qedf_glbl_q_params {
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u64 hw_p_cq; /* Completion queue PBL */
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u64 hw_p_rq; /* Request queue PBL */
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u64 hw_p_cmdq; /* Command queue PBL */
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};
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struct global_queue {
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struct fcoe_cqe *cq;
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dma_addr_t cq_dma;
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u32 cq_mem_size;
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u32 cq_cons_idx; /* Completion queue consumer index */
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u32 cq_prod_idx;
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void *cq_pbl;
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dma_addr_t cq_pbl_dma;
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u32 cq_pbl_size;
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};
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/* I/O tracing entry */
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#define QEDF_IO_TRACE_SIZE 2048
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struct qedf_io_log {
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#define QEDF_IO_TRACE_REQ 0
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#define QEDF_IO_TRACE_RSP 1
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uint8_t direction;
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uint16_t task_id;
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uint32_t port_id; /* Remote port fabric ID */
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int lun;
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unsigned char op; /* SCSI CDB */
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uint8_t lba[4];
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unsigned int bufflen; /* SCSI buffer length */
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unsigned int sg_count; /* Number of SG elements */
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int result; /* Result passed back to mid-layer */
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unsigned long jiffies; /* Time stamp when I/O logged */
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int refcount; /* Reference count for task id */
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unsigned int req_cpu; /* CPU that the task is queued on */
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unsigned int int_cpu; /* Interrupt CPU that the task is received on */
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unsigned int rsp_cpu; /* CPU that task is returned on */
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u8 sge_type; /* Did we take the slow, single or fast SGE path */
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};
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/* Number of entries in BDQ */
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#define QEDF_BDQ_SIZE 256
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#define QEDF_BDQ_BUF_SIZE 2072
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/* DMA coherent buffers for BDQ */
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struct qedf_bdq_buf {
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void *buf_addr;
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dma_addr_t buf_dma;
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};
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/* Main adapter struct */
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struct qedf_ctx {
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struct qedf_dbg_ctx dbg_ctx;
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struct fcoe_ctlr ctlr;
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struct fc_lport *lport;
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u8 data_src_addr[ETH_ALEN];
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#define QEDF_LINK_DOWN 0
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#define QEDF_LINK_UP 1
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atomic_t link_state;
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#define QEDF_DCBX_PENDING 0
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#define QEDF_DCBX_DONE 1
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atomic_t dcbx;
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uint16_t max_scsi_xid;
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uint16_t max_els_xid;
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#define QEDF_NULL_VLAN_ID -1
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#define QEDF_FALLBACK_VLAN 1002
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#define QEDF_DEFAULT_PRIO 3
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int vlan_id;
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u8 prio;
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struct qed_dev *cdev;
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struct qed_dev_fcoe_info dev_info;
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struct qed_int_info int_info;
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uint16_t last_command;
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spinlock_t hba_lock;
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struct pci_dev *pdev;
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u64 wwnn;
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u64 wwpn;
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u8 __aligned(16) mac[ETH_ALEN];
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struct list_head fcports;
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atomic_t num_offloads;
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unsigned int curr_conn_id;
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struct workqueue_struct *ll2_recv_wq;
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struct workqueue_struct *link_update_wq;
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struct delayed_work link_update;
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struct delayed_work link_recovery;
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struct completion flogi_compl;
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struct completion fipvlan_compl;
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/*
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* Used to tell if we're in the window where we are waiting for
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* the link to come back up before informting fcoe that the link is
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* done.
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*/
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atomic_t link_down_tmo_valid;
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#define QEDF_TIMER_INTERVAL (1 * HZ)
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struct timer_list timer; /* One second book keeping timer */
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#define QEDF_DRAIN_ACTIVE 1
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#define QEDF_LL2_STARTED 2
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#define QEDF_UNLOADING 3
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#define QEDF_GRCDUMP_CAPTURE 4
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#define QEDF_IN_RECOVERY 5
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#define QEDF_DBG_STOP_IO 6
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#define QEDF_PROBING 8
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unsigned long flags; /* Miscellaneous state flags */
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int fipvlan_retries;
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u8 num_queues;
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struct global_queue **global_queues;
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/* Pointer to array of queue structures */
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struct qedf_glbl_q_params *p_cpuq;
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/* Physical address of array of queue structures */
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dma_addr_t hw_p_cpuq;
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struct qedf_bdq_buf bdq[QEDF_BDQ_SIZE];
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void *bdq_pbl;
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dma_addr_t bdq_pbl_dma;
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size_t bdq_pbl_mem_size;
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void *bdq_pbl_list;
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dma_addr_t bdq_pbl_list_dma;
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u8 bdq_pbl_list_num_entries;
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void __iomem *bdq_primary_prod;
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void __iomem *bdq_secondary_prod;
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uint16_t bdq_prod_idx;
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/* Structure for holding all the fastpath for this qedf_ctx */
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struct qedf_fastpath *fp_array;
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struct qed_fcoe_tid tasks;
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struct qedf_cmd_mgr *cmd_mgr;
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/* Holds the PF parameters we pass to qed to start he FCoE function */
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struct qed_pf_params pf_params;
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/* Used to time middle path ELS and TM commands */
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struct workqueue_struct *timer_work_queue;
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#define QEDF_IO_WORK_MIN 64
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mempool_t *io_mempool;
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struct workqueue_struct *dpc_wq;
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struct delayed_work grcdump_work;
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u32 slow_sge_ios;
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u32 fast_sge_ios;
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u32 single_sge_ios;
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uint8_t *grcdump;
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uint32_t grcdump_size;
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struct qedf_io_log io_trace_buf[QEDF_IO_TRACE_SIZE];
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spinlock_t io_trace_lock;
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uint16_t io_trace_idx;
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bool stop_io_on_error;
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u32 flogi_cnt;
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u32 flogi_failed;
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/* Used for fc statistics */
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struct mutex stats_mutex;
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u64 input_requests;
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u64 output_requests;
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u64 control_requests;
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u64 packet_aborts;
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u64 alloc_failures;
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u8 lun_resets;
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u8 target_resets;
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u8 task_set_fulls;
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u8 busy;
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};
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struct io_bdt {
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struct qedf_ioreq *io_req;
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struct scsi_sge *bd_tbl;
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dma_addr_t bd_tbl_dma;
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u16 bd_valid;
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};
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struct qedf_cmd_mgr {
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struct qedf_ctx *qedf;
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u16 idx;
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struct io_bdt **io_bdt_pool;
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#define FCOE_PARAMS_NUM_TASKS 2048
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struct qedf_ioreq cmds[FCOE_PARAMS_NUM_TASKS];
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spinlock_t lock;
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atomic_t free_list_cnt;
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};
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/* Stolen from qed_cxt_api.h and adapted for qed_fcoe_info
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* Usage:
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*
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* void *ptr;
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* ptr = qedf_get_task_mem(&qedf->tasks, 128);
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*/
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static inline void *qedf_get_task_mem(struct qed_fcoe_tid *info, u32 tid)
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{
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return (void *)(info->blocks[tid / info->num_tids_per_block] +
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(tid % info->num_tids_per_block) * info->size);
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}
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static inline void qedf_stop_all_io(struct qedf_ctx *qedf)
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{
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set_bit(QEDF_DBG_STOP_IO, &qedf->flags);
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}
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/*
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* Externs
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*/
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#define QEDF_DEFAULT_LOG_MASK 0x3CFB6
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extern const struct qed_fcoe_ops *qed_ops;
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extern uint qedf_dump_frames;
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extern uint qedf_io_tracing;
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extern uint qedf_stop_io_on_error;
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extern uint qedf_link_down_tmo;
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#define QEDF_RETRY_DELAY_MAX 20 /* 2 seconds */
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extern bool qedf_retry_delay;
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extern uint qedf_debug;
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extern struct qedf_cmd_mgr *qedf_cmd_mgr_alloc(struct qedf_ctx *qedf);
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extern void qedf_cmd_mgr_free(struct qedf_cmd_mgr *cmgr);
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extern int qedf_queuecommand(struct Scsi_Host *host,
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struct scsi_cmnd *sc_cmd);
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extern void qedf_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb);
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extern u8 *qedf_get_src_mac(struct fc_lport *lport);
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extern void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb);
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extern void qedf_fcoe_send_vlan_req(struct qedf_ctx *qedf);
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extern void qedf_scsi_completion(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
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struct qedf_ioreq *io_req);
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extern void qedf_process_warning_compl(struct qedf_ctx *qedf,
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struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
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extern void qedf_process_error_detect(struct qedf_ctx *qedf,
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struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
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extern void qedf_flush_active_ios(struct qedf_rport *fcport, int lun);
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extern void qedf_release_cmd(struct kref *ref);
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extern int qedf_initiate_abts(struct qedf_ioreq *io_req,
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bool return_scsi_cmd_on_abts);
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extern void qedf_process_abts_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
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struct qedf_ioreq *io_req);
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extern struct qedf_ioreq *qedf_alloc_cmd(struct qedf_rport *fcport,
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u8 cmd_type);
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extern struct device_attribute *qedf_host_attrs[];
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extern void qedf_cmd_timer_set(struct qedf_ctx *qedf, struct qedf_ioreq *io_req,
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unsigned int timer_msec);
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extern int qedf_init_mp_req(struct qedf_ioreq *io_req);
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extern void qedf_init_mp_task(struct qedf_ioreq *io_req,
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struct e4_fcoe_task_context *task_ctx, struct fcoe_wqe *sqe);
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extern u16 qedf_get_sqe_idx(struct qedf_rport *fcport);
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extern void qedf_ring_doorbell(struct qedf_rport *fcport);
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extern void qedf_process_els_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
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struct qedf_ioreq *els_req);
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extern int qedf_send_rrq(struct qedf_ioreq *aborted_io_req);
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extern int qedf_send_adisc(struct qedf_rport *fcport, struct fc_frame *fp);
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extern int qedf_initiate_cleanup(struct qedf_ioreq *io_req,
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bool return_scsi_cmd_on_abts);
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extern void qedf_process_cleanup_compl(struct qedf_ctx *qedf,
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struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
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extern int qedf_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags);
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extern void qedf_process_tmf_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
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struct qedf_ioreq *io_req);
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extern void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe);
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extern void qedf_scsi_done(struct qedf_ctx *qedf, struct qedf_ioreq *io_req,
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int result);
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extern void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id);
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extern void qedf_create_sysfs_ctx_attr(struct qedf_ctx *qedf);
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extern void qedf_remove_sysfs_ctx_attr(struct qedf_ctx *qedf);
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extern void qedf_capture_grc_dump(struct qedf_ctx *qedf);
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extern void qedf_wait_for_upload(struct qedf_ctx *qedf);
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extern void qedf_process_unsol_compl(struct qedf_ctx *qedf, uint16_t que_idx,
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struct fcoe_cqe *cqe);
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extern void qedf_restart_rport(struct qedf_rport *fcport);
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extern int qedf_send_rec(struct qedf_ioreq *orig_io_req);
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extern int qedf_post_io_req(struct qedf_rport *fcport,
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struct qedf_ioreq *io_req);
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extern void qedf_process_seq_cleanup_compl(struct qedf_ctx *qedf,
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struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
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extern int qedf_send_flogi(struct qedf_ctx *qedf);
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extern void qedf_get_protocol_tlv_data(void *dev, void *data);
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extern void qedf_fp_io_handler(struct work_struct *work);
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extern void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data);
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extern void qedf_wq_grcdump(struct work_struct *work);
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#define FCOE_WORD_TO_BYTE 4
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#define QEDF_MAX_TASK_NUM 0xFFFF
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struct fip_vlan {
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struct ethhdr eth;
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struct fip_header fip;
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struct {
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struct fip_mac_desc mac;
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struct fip_wwn_desc wwnn;
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} desc;
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};
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/* SQ/CQ Sizes */
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#define GBL_RSVD_TASKS 16
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#define NUM_TASKS_PER_CONNECTION 1024
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#define NUM_RW_TASKS_PER_CONNECTION 512
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#define FCOE_PARAMS_CQ_NUM_ENTRIES FCOE_PARAMS_NUM_TASKS
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#define FCOE_PARAMS_CMDQ_NUM_ENTRIES FCOE_PARAMS_NUM_TASKS
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#define SQ_NUM_ENTRIES NUM_TASKS_PER_CONNECTION
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#define QEDF_FCOE_PARAMS_GL_RQ_PI 0
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#define QEDF_FCOE_PARAMS_GL_CMD_PI 1
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|
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#define QEDF_READ (1 << 1)
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#define QEDF_WRITE (1 << 0)
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#define MAX_FIBRE_LUNS 0xffffffff
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|
|
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#define MIN_NUM_CPUS_MSIX(x) min_t(u32, x->dev_info.num_cqs, \
|
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num_online_cpus())
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|
|
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/*
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* PCI function probe defines
|
|
*/
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/* Probe/remove called during normal PCI probe */
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#define QEDF_MODE_NORMAL 0
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/* Probe/remove called from qed error recovery */
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#define QEDF_MODE_RECOVERY 1
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|
|
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#define SUPPORTED_25000baseKR_Full (1<<27)
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#define SUPPORTED_50000baseKR2_Full (1<<28)
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#define SUPPORTED_100000baseKR4_Full (1<<29)
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#define SUPPORTED_100000baseCR4_Full (1<<30)
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#endif
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