drivers/scsi/bnx2fc/bnx2fc.h - kernel/msm-4.9 - Gitiles

 #ifndef _BNX2FC_H_
 #define _BNX2FC_H_
 /* bnx2fc.h: Broadcom NetXtreme II Linux FCoE offload driver.
  *
  * Copyright (c) 2008 - 2011 Broadcom 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)
  */

 #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 "bnx2fc_debug.h"
 #include "../../net/cnic_if.h"
 #include "bnx2fc_constants.h"

 #define BNX2FC_NAME		"bnx2fc"
 #define BNX2FC_VERSION		"1.0.4"

 #define PFX			"bnx2fc: "

 #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	128
 #define BNX2FC_NUM_MAX_SESS_LOG	(ilog2(BNX2FC_NUM_MAX_SESS))

 #define BNX2FC_MAX_OUTSTANDING_CMNDS	2048
 #define BNX2FC_CAN_QUEUE		BNX2FC_MAX_OUTSTANDING_CMNDS
 #define BNX2FC_ELSTM_XIDS		BNX2FC_CAN_QUEUE
 #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 BNX2FC_5771X_DB_PAGE_SIZE	128

 #define BNX2FC_MAX_TASKS		\
 			     (BNX2FC_MAX_OUTSTANDING_CMNDS + BNX2FC_ELSTM_XIDS)
 #define BNX2FC_TASK_SIZE		128
 #define	BNX2FC_TASKS_PER_PAGE		(PAGE_SIZE/BNX2FC_TASK_SIZE)
 #define BNX2FC_TASK_CTX_ARR_SZ		(BNX2FC_MAX_TASKS/BNX2FC_TASKS_PER_PAGE)

 #define BNX2FC_MAX_ROWS_IN_HASH_TBL	8
 #define BNX2FC_HASH_TBL_CHUNK_SIZE	(16 * 1024)

 #define BNX2FC_MAX_SEQS			255

 #define BNX2FC_READ			(1 << 1)
 #define BNX2FC_WRITE			(1 << 0)

 #define BNX2FC_MIN_XID			0
 #define BNX2FC_MAX_XID			\
 			(BNX2FC_MAX_OUTSTANDING_CMNDS + BNX2FC_ELSTM_XIDS - 1)
 #define FCOE_MIN_XID			(BNX2FC_MAX_XID + 1)
 #define FCOE_MAX_XID			(FCOE_MIN_XID + 4095)
 #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

 /* 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_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;
 	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 fcoe_statistics_params *stats_buffer;
 	dma_addr_t stats_buf_dma;
 	struct completion stat_req_done;

 	/*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;
 };

 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;
 	struct fcoe_ctlr ctlr;
 	u8 vlan_enabled;
 	int vlan_id;
 };

 #define bnx2fc_from_ctlr(fip) container_of(fip, struct bnx2fc_interface, ctlr)

 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

 	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;
 	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_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,
 						u16 min_xid, u16 max_xid);
 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);

 #endif
	#ifndef _BNX2FC_H_
	#define _BNX2FC_H_
	/* bnx2fc.h: Broadcom NetXtreme II Linux FCoE offload driver.
	*
	* Copyright (c) 2008 - 2011 Broadcom 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)
	*/

	#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 "bnx2fc_debug.h"
	#include "../../net/cnic_if.h"
	#include "bnx2fc_constants.h"

	#define BNX2FC_NAME "bnx2fc"
	#define BNX2FC_VERSION "1.0.4"

	#define PFX "bnx2fc: "

	#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 128
	#define BNX2FC_NUM_MAX_SESS_LOG (ilog2(BNX2FC_NUM_MAX_SESS))

	#define BNX2FC_MAX_OUTSTANDING_CMNDS 2048
	#define BNX2FC_CAN_QUEUE BNX2FC_MAX_OUTSTANDING_CMNDS
	#define BNX2FC_ELSTM_XIDS BNX2FC_CAN_QUEUE
	#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 BNX2FC_5771X_DB_PAGE_SIZE 128

	#define BNX2FC_MAX_TASKS \
	(BNX2FC_MAX_OUTSTANDING_CMNDS + BNX2FC_ELSTM_XIDS)
	#define BNX2FC_TASK_SIZE 128
	#define BNX2FC_TASKS_PER_PAGE (PAGE_SIZE/BNX2FC_TASK_SIZE)
	#define BNX2FC_TASK_CTX_ARR_SZ (BNX2FC_MAX_TASKS/BNX2FC_TASKS_PER_PAGE)

	#define BNX2FC_MAX_ROWS_IN_HASH_TBL 8
	#define BNX2FC_HASH_TBL_CHUNK_SIZE (16 * 1024)

	#define BNX2FC_MAX_SEQS 255

	#define BNX2FC_READ (1 << 1)
	#define BNX2FC_WRITE (1 << 0)

	#define BNX2FC_MIN_XID 0
	#define BNX2FC_MAX_XID \
	(BNX2FC_MAX_OUTSTANDING_CMNDS + BNX2FC_ELSTM_XIDS - 1)
	#define FCOE_MIN_XID (BNX2FC_MAX_XID + 1)
	#define FCOE_MAX_XID (FCOE_MIN_XID + 4095)
	#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

	/* 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_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;
	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 fcoe_statistics_params *stats_buffer;
	dma_addr_t stats_buf_dma;
	struct completion stat_req_done;

	/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;
	};

	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;
	struct fcoe_ctlr ctlr;
	u8 vlan_enabled;
	int vlan_id;
	};

	#define bnx2fc_from_ctlr(fip) container_of(fip, struct bnx2fc_interface, ctlr)

	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

	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;
	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_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,
	u16 min_xid, u16 max_xid);
	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);

	#endif