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linux-next/drivers/scsi/bnx2fc/bnx2fc.h
Saurav Kashyap 17d87c45b9 bnx2fc: Rebranding bnx2fc driver 
QLogic has acquired the NetXtremeII products and drivers from Broadcom.
This patch re-brands bnx2fc driver as a QLogic driver

Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Acked-by: Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-07-25 17:16:59 -04:00

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/* bnx2fc.h: QLogic NetXtreme II Linux FCoE offload driver.
*
* Copyright (c) 2008 - 2013 Broadcom Corporation
* Copyright (c) 2014, QLogic Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*
* Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
*/
#ifndef _BNX2FC_H_
#define _BNX2FC_H_
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/if_ether.h>
#include <linux/if_vlan.h>
#include <linux/kthread.h>
#include <linux/crc32.h>
#include <linux/cpu.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>
#include <linux/workqueue.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/bitops.h>
#include <linux/log2.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/io.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_tcq.h>
#include <scsi/libfc.h>
#include <scsi/libfcoe.h>
#include <scsi/fc_encode.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/fc/fc_fip.h>
#include <scsi/fc/fc_fc2.h>
#include <scsi/fc_frame.h>
#include <scsi/fc/fc_fcoe.h>
#include <scsi/fc/fc_fcp.h>
#include "57xx_hsi_bnx2fc.h"
#include "../../net/ethernet/broadcom/cnic_if.h"
#include "../../net/ethernet/broadcom/bnx2x/bnx2x_mfw_req.h"
#include "bnx2fc_constants.h"
#define BNX2FC_NAME "bnx2fc"
#define BNX2FC_VERSION "2.4.2"
#define PFX "bnx2fc: "
#define BCM_CHIP_LEN 16
#define BNX2X_DOORBELL_PCI_BAR 2
#define BNX2FC_MAX_BD_LEN 0xffff
#define BNX2FC_BD_SPLIT_SZ 0x8000
#define BNX2FC_MAX_BDS_PER_CMD 256
#define BNX2FC_SQ_WQES_MAX 256
#define BNX2FC_SCSI_MAX_SQES ((3 * BNX2FC_SQ_WQES_MAX) / 8)
#define BNX2FC_TM_MAX_SQES ((BNX2FC_SQ_WQES_MAX) / 2)
#define BNX2FC_ELS_MAX_SQES (BNX2FC_TM_MAX_SQES - 1)
#define BNX2FC_RQ_WQES_MAX 16
#define BNX2FC_CQ_WQES_MAX (BNX2FC_SQ_WQES_MAX + BNX2FC_RQ_WQES_MAX)
#define BNX2FC_NUM_MAX_SESS 1024
#define BNX2FC_NUM_MAX_SESS_LOG (ilog2(BNX2FC_NUM_MAX_SESS))
#define BNX2FC_MAX_NPIV 256
#define BNX2FC_MIN_PAYLOAD 256
#define BNX2FC_MAX_PAYLOAD 2048
#define BNX2FC_MFS \
(BNX2FC_MAX_PAYLOAD + sizeof(struct fc_frame_header))
#define BNX2FC_MINI_JUMBO_MTU 2500
#define BNX2FC_RQ_BUF_SZ 256
#define BNX2FC_RQ_BUF_LOG_SZ (ilog2(BNX2FC_RQ_BUF_SZ))
#define BNX2FC_SQ_WQE_SIZE (sizeof(struct fcoe_sqe))
#define BNX2FC_CQ_WQE_SIZE (sizeof(struct fcoe_cqe))
#define BNX2FC_RQ_WQE_SIZE (BNX2FC_RQ_BUF_SZ)
#define BNX2FC_XFERQ_WQE_SIZE (sizeof(struct fcoe_xfrqe))
#define BNX2FC_CONFQ_WQE_SIZE (sizeof(struct fcoe_confqe))
#define BNX2X_DB_SHIFT 3
#define BNX2FC_TASK_SIZE 128
#define BNX2FC_TASKS_PER_PAGE (PAGE_SIZE/BNX2FC_TASK_SIZE)
#define BNX2FC_MAX_ROWS_IN_HASH_TBL 8
#define BNX2FC_HASH_TBL_CHUNK_SIZE (16 * 1024)
#define BNX2FC_MAX_SEQS 255
#define BNX2FC_MAX_RETRY_CNT 3
#define BNX2FC_MAX_RPORT_RETRY_CNT 255
#define BNX2FC_READ (1 << 1)
#define BNX2FC_WRITE (1 << 0)
#define BNX2FC_MIN_XID 0
#define FCOE_MAX_NUM_XIDS 0x2000
#define FCOE_MAX_XID_OFFSET (FCOE_MAX_NUM_XIDS - 1)
#define FCOE_XIDS_PER_CPU_OFFSET ((512 * nr_cpu_ids) - 1)
#define BNX2FC_MAX_LUN 0xFFFF
#define BNX2FC_MAX_FCP_TGT 256
#define BNX2FC_MAX_CMD_LEN 16
#define BNX2FC_TM_TIMEOUT 60 /* secs */
#define BNX2FC_IO_TIMEOUT 20000UL /* msecs */
#define BNX2FC_WAIT_CNT 1200
#define BNX2FC_FW_TIMEOUT (3 * HZ)
#define PORT_MAX 2
#define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status)
/* FC FCP Status */
#define FC_GOOD 0
#define BNX2FC_RNID_HBA 0x7
#define SRR_RETRY_COUNT 5
#define REC_RETRY_COUNT 1
#define BNX2FC_NUM_ERR_BITS 63
#define BNX2FC_RELOGIN_WAIT_TIME 200
#define BNX2FC_RELOGIN_WAIT_CNT 10
#define BNX2FC_STATS(hba, stat, cnt) \
do { \
u32 val; \
\
val = fw_stats->stat.cnt; \
if (hba->prev_stats.stat.cnt <= val) \
val -= hba->prev_stats.stat.cnt; \
else \
val += (0xfffffff - hba->prev_stats.stat.cnt); \
hba->bfw_stats.cnt += val; \
} while (0)
/* bnx2fc driver uses only one instance of fcoe_percpu_s */
extern struct fcoe_percpu_s bnx2fc_global;
extern struct workqueue_struct *bnx2fc_wq;
struct bnx2fc_percpu_s {
struct task_struct *iothread;
struct list_head work_list;
spinlock_t fp_work_lock;
};
struct bnx2fc_fw_stats {
u64 fc_crc_cnt;
u64 fcoe_tx_pkt_cnt;
u64 fcoe_rx_pkt_cnt;
u64 fcoe_tx_byte_cnt;
u64 fcoe_rx_byte_cnt;
};
struct bnx2fc_hba {
struct list_head list;
struct cnic_dev *cnic;
struct pci_dev *pcidev;
struct net_device *phys_dev;
unsigned long reg_with_cnic;
#define BNX2FC_CNIC_REGISTERED 1
struct bnx2fc_cmd_mgr *cmd_mgr;
spinlock_t hba_lock;
struct mutex hba_mutex;
unsigned long adapter_state;
#define ADAPTER_STATE_UP 0
#define ADAPTER_STATE_GOING_DOWN 1
#define ADAPTER_STATE_LINK_DOWN 2
#define ADAPTER_STATE_READY 3
unsigned long flags;
#define BNX2FC_FLAG_FW_INIT_DONE 0
#define BNX2FC_FLAG_DESTROY_CMPL 1
u32 next_conn_id;
/* xid resources */
u16 max_xid;
u32 max_tasks;
u32 max_outstanding_cmds;
u32 elstm_xids;
struct fcoe_task_ctx_entry **task_ctx;
dma_addr_t *task_ctx_dma;
struct regpair *task_ctx_bd_tbl;
dma_addr_t task_ctx_bd_dma;
int hash_tbl_segment_count;
void **hash_tbl_segments;
void *hash_tbl_pbl;
dma_addr_t hash_tbl_pbl_dma;
struct fcoe_t2_hash_table_entry *t2_hash_tbl;
dma_addr_t t2_hash_tbl_dma;
char *t2_hash_tbl_ptr;
dma_addr_t t2_hash_tbl_ptr_dma;
char *dummy_buffer;
dma_addr_t dummy_buf_dma;
/* Active list of offloaded sessions */
struct bnx2fc_rport **tgt_ofld_list;
/* statistics */
struct bnx2fc_fw_stats bfw_stats;
struct fcoe_statistics_params prev_stats;
struct fcoe_statistics_params *stats_buffer;
dma_addr_t stats_buf_dma;
struct completion stat_req_done;
struct fcoe_capabilities fcoe_cap;
/*destroy handling */
struct timer_list destroy_timer;
wait_queue_head_t destroy_wait;
/* linkdown handling */
wait_queue_head_t shutdown_wait;
int wait_for_link_down;
int num_ofld_sess;
struct list_head vports;
char chip_num[BCM_CHIP_LEN];
};
struct bnx2fc_interface {
struct list_head list;
unsigned long if_flags;
#define BNX2FC_CTLR_INIT_DONE 0
struct bnx2fc_hba *hba;
struct net_device *netdev;
struct packet_type fcoe_packet_type;
struct packet_type fip_packet_type;
struct workqueue_struct *timer_work_queue;
struct kref kref;
u8 vlan_enabled;
int vlan_id;
bool enabled;
};
#define bnx2fc_from_ctlr(x) \
((struct bnx2fc_interface *)((x) + 1))
#define bnx2fc_to_ctlr(x) \
((struct fcoe_ctlr *)(((struct fcoe_ctlr *)(x)) - 1))
struct bnx2fc_lport {
struct list_head list;
struct fc_lport *lport;
};
struct bnx2fc_cmd_mgr {
struct bnx2fc_hba *hba;
u16 next_idx;
struct list_head *free_list;
spinlock_t *free_list_lock;
struct io_bdt **io_bdt_pool;
struct bnx2fc_cmd **cmds;
};
struct bnx2fc_rport {
struct fcoe_port *port;
struct fc_rport *rport;
struct fc_rport_priv *rdata;
void __iomem *ctx_base;
#define DPM_TRIGER_TYPE 0x40
u32 io_timeout;
u32 fcoe_conn_id;
u32 context_id;
u32 sid;
int dev_type;
unsigned long flags;
#define BNX2FC_FLAG_SESSION_READY 0x1
#define BNX2FC_FLAG_OFFLOADED 0x2
#define BNX2FC_FLAG_DISABLED 0x3
#define BNX2FC_FLAG_DESTROYED 0x4
#define BNX2FC_FLAG_OFLD_REQ_CMPL 0x5
#define BNX2FC_FLAG_CTX_ALLOC_FAILURE 0x6
#define BNX2FC_FLAG_UPLD_REQ_COMPL 0x7
#define BNX2FC_FLAG_EXPL_LOGO 0x8
#define BNX2FC_FLAG_DISABLE_FAILED 0x9
#define BNX2FC_FLAG_ENABLED 0xa
u8 src_addr[ETH_ALEN];
u32 max_sqes;
u32 max_rqes;
u32 max_cqes;
atomic_t free_sqes;
struct b577xx_doorbell_set_prod sq_db;
struct b577xx_fcoe_rx_doorbell rx_db;
struct fcoe_sqe *sq;
dma_addr_t sq_dma;
u16 sq_prod_idx;
u8 sq_curr_toggle_bit;
u32 sq_mem_size;
struct fcoe_cqe *cq;
dma_addr_t cq_dma;
u16 cq_cons_idx;
u8 cq_curr_toggle_bit;
u32 cq_mem_size;
void *rq;
dma_addr_t rq_dma;
u32 rq_prod_idx;
u32 rq_cons_idx;
u32 rq_mem_size;
void *rq_pbl;
dma_addr_t rq_pbl_dma;
u32 rq_pbl_size;
struct fcoe_xfrqe *xferq;
dma_addr_t xferq_dma;
u32 xferq_mem_size;
struct fcoe_confqe *confq;
dma_addr_t confq_dma;
u32 confq_mem_size;
void *confq_pbl;
dma_addr_t confq_pbl_dma;
u32 confq_pbl_size;
struct fcoe_conn_db *conn_db;
dma_addr_t conn_db_dma;
u32 conn_db_mem_size;
struct fcoe_sqe *lcq;
dma_addr_t lcq_dma;
u32 lcq_mem_size;
void *ofld_req[4];
dma_addr_t ofld_req_dma[4];
void *enbl_req;
dma_addr_t enbl_req_dma;
spinlock_t tgt_lock;
spinlock_t cq_lock;
atomic_t num_active_ios;
u32 flush_in_prog;
unsigned long timestamp;
unsigned long retry_delay_timestamp;
struct list_head free_task_list;
struct bnx2fc_cmd *pending_queue[BNX2FC_SQ_WQES_MAX+1];
struct list_head active_cmd_queue;
struct list_head els_queue;
struct list_head io_retire_queue;
struct list_head active_tm_queue;
struct timer_list ofld_timer;
wait_queue_head_t ofld_wait;
struct timer_list upld_timer;
wait_queue_head_t upld_wait;
};
struct bnx2fc_mp_req {
u8 tm_flags;
u32 req_len;
void *req_buf;
dma_addr_t req_buf_dma;
struct fcoe_bd_ctx *mp_req_bd;
dma_addr_t mp_req_bd_dma;
struct fc_frame_header req_fc_hdr;
u32 resp_len;
void *resp_buf;
dma_addr_t resp_buf_dma;
struct fcoe_bd_ctx *mp_resp_bd;
dma_addr_t mp_resp_bd_dma;
struct fc_frame_header resp_fc_hdr;
};
struct bnx2fc_els_cb_arg {
struct bnx2fc_cmd *aborted_io_req;
struct bnx2fc_cmd *io_req;
u16 l2_oxid;
u32 offset;
enum fc_rctl r_ctl;
};
/* bnx2fc command structure */
struct bnx2fc_cmd {
struct list_head link;
u8 on_active_queue;
u8 on_tmf_queue;
u8 cmd_type;
#define BNX2FC_SCSI_CMD 1
#define BNX2FC_TASK_MGMT_CMD 2
#define BNX2FC_ABTS 3
#define BNX2FC_ELS 4
#define BNX2FC_CLEANUP 5
#define BNX2FC_SEQ_CLEANUP 6
u8 io_req_flags;
struct kref refcount;
struct fcoe_port *port;
struct bnx2fc_rport *tgt;
struct scsi_cmnd *sc_cmd;
struct bnx2fc_cmd_mgr *cmd_mgr;
struct bnx2fc_mp_req mp_req;
void (*cb_func)(struct bnx2fc_els_cb_arg *cb_arg);
struct bnx2fc_els_cb_arg *cb_arg;
struct delayed_work timeout_work; /* timer for ULP timeouts */
struct completion tm_done;
int wait_for_comp;
u16 xid;
struct fcoe_err_report_entry err_entry;
struct fcoe_task_ctx_entry *task;
struct io_bdt *bd_tbl;
struct fcp_rsp *rsp;
size_t data_xfer_len;
unsigned long req_flags;
#define BNX2FC_FLAG_ISSUE_RRQ 0x1
#define BNX2FC_FLAG_ISSUE_ABTS 0x2
#define BNX2FC_FLAG_ABTS_DONE 0x3
#define BNX2FC_FLAG_TM_COMPL 0x4
#define BNX2FC_FLAG_TM_TIMEOUT 0x5
#define BNX2FC_FLAG_IO_CLEANUP 0x6
#define BNX2FC_FLAG_RETIRE_OXID 0x7
#define BNX2FC_FLAG_EH_ABORT 0x8
#define BNX2FC_FLAG_IO_COMPL 0x9
#define BNX2FC_FLAG_ELS_DONE 0xa
#define BNX2FC_FLAG_ELS_TIMEOUT 0xb
#define BNX2FC_FLAG_CMD_LOST 0xc
#define BNX2FC_FLAG_SRR_SENT 0xd
u8 rec_retry;
u8 srr_retry;
u32 srr_offset;
u8 srr_rctl;
u32 fcp_resid;
u32 fcp_rsp_len;
u32 fcp_sns_len;
u8 cdb_status; /* SCSI IO status */
u8 fcp_status; /* FCP IO status */
u8 fcp_rsp_code;
u8 scsi_comp_flags;
};
struct io_bdt {
struct bnx2fc_cmd *io_req;
struct fcoe_bd_ctx *bd_tbl;
dma_addr_t bd_tbl_dma;
u16 bd_valid;
};
struct bnx2fc_work {
struct list_head list;
struct bnx2fc_rport *tgt;
u16 wqe;
};
struct bnx2fc_unsol_els {
struct fc_lport *lport;
struct fc_frame *fp;
struct bnx2fc_hba *hba;
struct work_struct unsol_els_work;
};
struct bnx2fc_cmd *bnx2fc_cmd_alloc(struct bnx2fc_rport *tgt);
struct bnx2fc_cmd *bnx2fc_elstm_alloc(struct bnx2fc_rport *tgt, int type);
void bnx2fc_cmd_release(struct kref *ref);
int bnx2fc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd);
int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba);
int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba);
int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
struct bnx2fc_rport *tgt);
int bnx2fc_send_session_enable_req(struct fcoe_port *port,
struct bnx2fc_rport *tgt);
int bnx2fc_send_session_disable_req(struct fcoe_port *port,
struct bnx2fc_rport *tgt);
int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
struct bnx2fc_rport *tgt);
int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt);
void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
u32 num_cqe);
int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba);
void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba);
int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba);
void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba);
struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba);
void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr);
void bnx2fc_get_link_state(struct bnx2fc_hba *hba);
char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items);
void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items);
int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen);
int bnx2fc_send_rrq(struct bnx2fc_cmd *aborted_io_req);
int bnx2fc_send_adisc(struct bnx2fc_rport *tgt, struct fc_frame *fp);
int bnx2fc_send_logo(struct bnx2fc_rport *tgt, struct fc_frame *fp);
int bnx2fc_send_rls(struct bnx2fc_rport *tgt, struct fc_frame *fp);
int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req);
int bnx2fc_initiate_abts(struct bnx2fc_cmd *io_req);
void bnx2fc_cmd_timer_set(struct bnx2fc_cmd *io_req,
unsigned int timer_msec);
int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req);
void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
struct fcoe_task_ctx_entry *task,
u16 orig_xid);
void bnx2fc_init_seq_cleanup_task(struct bnx2fc_cmd *seq_clnup_req,
struct fcoe_task_ctx_entry *task,
struct bnx2fc_cmd *orig_io_req,
u32 offset);
void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
struct fcoe_task_ctx_entry *task);
void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
struct fcoe_task_ctx_entry *task);
void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid);
void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt);
int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd);
int bnx2fc_eh_host_reset(struct scsi_cmnd *sc_cmd);
int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd);
int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd);
void bnx2fc_rport_event_handler(struct fc_lport *lport,
struct fc_rport_priv *rport,
enum fc_rport_event event);
void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req,
struct fcoe_task_ctx_entry *task,
u8 num_rq);
void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req,
struct fcoe_task_ctx_entry *task,
u8 num_rq);
void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req,
struct fcoe_task_ctx_entry *task,
u8 num_rq);
void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req,
struct fcoe_task_ctx_entry *task,
u8 num_rq);
void bnx2fc_process_els_compl(struct bnx2fc_cmd *els_req,
struct fcoe_task_ctx_entry *task,
u8 num_rq);
void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
struct fcp_cmnd *fcp_cmnd);
void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt);
struct fc_seq *bnx2fc_elsct_send(struct fc_lport *lport, u32 did,
struct fc_frame *fp, unsigned int op,
void (*resp)(struct fc_seq *,
struct fc_frame *,
void *),
void *arg, u32 timeout);
void bnx2fc_arm_cq(struct bnx2fc_rport *tgt);
int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt);
void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe);
struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port,
u32 port_id);
void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
unsigned char *buf,
u32 frame_len, u16 l2_oxid);
int bnx2fc_send_stat_req(struct bnx2fc_hba *hba);
int bnx2fc_post_io_req(struct bnx2fc_rport *tgt, struct bnx2fc_cmd *io_req);
int bnx2fc_send_rec(struct bnx2fc_cmd *orig_io_req);
int bnx2fc_send_srr(struct bnx2fc_cmd *orig_io_req, u32 offset, u8 r_ctl);
void bnx2fc_process_seq_cleanup_compl(struct bnx2fc_cmd *seq_clnup_req,
struct fcoe_task_ctx_entry *task,
u8 rx_state);
int bnx2fc_initiate_seq_cleanup(struct bnx2fc_cmd *orig_io_req, u32 offset,
enum fc_rctl r_ctl);
#include "bnx2fc_debug.h"
#endif
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