/* bnx2fc_hwi.c: QLogic Linux FCoE offload driver.
   * This file contains the code that low level functions that interact
   * with 57712 FCoE firmware.
   *
   * Copyright (c) 2008-2013 Broadcom Corporation
   * Copyright (c) 2014-2015 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)
   */
  
  #include "bnx2fc.h"
  
  DECLARE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
  
  static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
  					struct fcoe_kcqe *new_cqe_kcqe);
  static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
  					struct fcoe_kcqe *ofld_kcqe);
  static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
  						struct fcoe_kcqe *ofld_kcqe);
  static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code);
  static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
  					struct fcoe_kcqe *destroy_kcqe);
  
  int bnx2fc_send_stat_req(struct bnx2fc_hba *hba)
  {
  	struct fcoe_kwqe_stat stat_req;
  	struct kwqe *kwqe_arr[2];
  	int num_kwqes = 1;
  	int rc = 0;
  
  	memset(&stat_req, 0x00, sizeof(struct fcoe_kwqe_stat));
  	stat_req.hdr.op_code = FCOE_KWQE_OPCODE_STAT;
  	stat_req.hdr.flags =
  		(FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  
  	stat_req.stat_params_addr_lo = (u32) hba->stats_buf_dma;
  	stat_req.stat_params_addr_hi = (u32) ((u64)hba->stats_buf_dma >> 32);
  
  	kwqe_arr[0] = (struct kwqe *) &stat_req;
  
  	if (hba->cnic && hba->cnic->submit_kwqes)
  		rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
  
  	return rc;
  }
  
  /**
   * bnx2fc_send_fw_fcoe_init_msg - initiates initial handshake with FCoE f/w
   *
   * @hba:	adapter structure pointer
   *
   * Send down FCoE firmware init KWQEs which initiates the initial handshake
   *	with the f/w.
   *
   */
  int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba)
  {
  	struct fcoe_kwqe_init1 fcoe_init1;
  	struct fcoe_kwqe_init2 fcoe_init2;
  	struct fcoe_kwqe_init3 fcoe_init3;
  	struct kwqe *kwqe_arr[3];
  	int num_kwqes = 3;
  	int rc = 0;
  
  	if (!hba->cnic) {
  		printk(KERN_ERR PFX "hba->cnic NULL during fcoe fw init
  ");
  		return -ENODEV;
  	}
  
  	/* fill init1 KWQE */
  	memset(&fcoe_init1, 0x00, sizeof(struct fcoe_kwqe_init1));
  	fcoe_init1.hdr.op_code = FCOE_KWQE_OPCODE_INIT1;
  	fcoe_init1.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
  					FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  
  	fcoe_init1.num_tasks = hba->max_tasks;
  	fcoe_init1.sq_num_wqes = BNX2FC_SQ_WQES_MAX;
  	fcoe_init1.rq_num_wqes = BNX2FC_RQ_WQES_MAX;
  	fcoe_init1.rq_buffer_log_size = BNX2FC_RQ_BUF_LOG_SZ;
  	fcoe_init1.cq_num_wqes = BNX2FC_CQ_WQES_MAX;
  	fcoe_init1.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma;
  	fcoe_init1.dummy_buffer_addr_hi = (u32) ((u64)hba->dummy_buf_dma >> 32);
  	fcoe_init1.task_list_pbl_addr_lo = (u32) hba->task_ctx_bd_dma;
  	fcoe_init1.task_list_pbl_addr_hi =
  				(u32) ((u64) hba->task_ctx_bd_dma >> 32);
  	fcoe_init1.mtu = BNX2FC_MINI_JUMBO_MTU;
  
  	fcoe_init1.flags = (PAGE_SHIFT <<
  				FCOE_KWQE_INIT1_LOG_PAGE_SIZE_SHIFT);
  
  	fcoe_init1.num_sessions_log = BNX2FC_NUM_MAX_SESS_LOG;
  
  	/* fill init2 KWQE */
  	memset(&fcoe_init2, 0x00, sizeof(struct fcoe_kwqe_init2));
  	fcoe_init2.hdr.op_code = FCOE_KWQE_OPCODE_INIT2;
  	fcoe_init2.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
  					FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  
  	fcoe_init2.hsi_major_version = FCOE_HSI_MAJOR_VERSION;
  	fcoe_init2.hsi_minor_version = FCOE_HSI_MINOR_VERSION;
  
  
  	fcoe_init2.hash_tbl_pbl_addr_lo = (u32) hba->hash_tbl_pbl_dma;
  	fcoe_init2.hash_tbl_pbl_addr_hi = (u32)
  					   ((u64) hba->hash_tbl_pbl_dma >> 32);
  
  	fcoe_init2.t2_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_dma;
  	fcoe_init2.t2_hash_tbl_addr_hi = (u32)
  					  ((u64) hba->t2_hash_tbl_dma >> 32);
  
  	fcoe_init2.t2_ptr_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_ptr_dma;
  	fcoe_init2.t2_ptr_hash_tbl_addr_hi = (u32)
  					((u64) hba->t2_hash_tbl_ptr_dma >> 32);
  
  	fcoe_init2.free_list_count = BNX2FC_NUM_MAX_SESS;
  
  	/* fill init3 KWQE */
  	memset(&fcoe_init3, 0x00, sizeof(struct fcoe_kwqe_init3));
  	fcoe_init3.hdr.op_code = FCOE_KWQE_OPCODE_INIT3;
  	fcoe_init3.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
  					FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  	fcoe_init3.error_bit_map_lo = 0xffffffff;
  	fcoe_init3.error_bit_map_hi = 0xffffffff;
  
  	/*
  	 * enable both cached connection and cached tasks
  	 * 0 = none, 1 = cached connection, 2 = cached tasks, 3 = both
  	 */
  	fcoe_init3.perf_config = 3;
  
  	kwqe_arr[0] = (struct kwqe *) &fcoe_init1;
  	kwqe_arr[1] = (struct kwqe *) &fcoe_init2;
  	kwqe_arr[2] = (struct kwqe *) &fcoe_init3;
  
  	if (hba->cnic && hba->cnic->submit_kwqes)
  		rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
  
  	return rc;
  }
  int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba)
  {
  	struct fcoe_kwqe_destroy fcoe_destroy;
  	struct kwqe *kwqe_arr[2];
  	int num_kwqes = 1;
  	int rc = -1;
  
  	/* fill destroy KWQE */
  	memset(&fcoe_destroy, 0x00, sizeof(struct fcoe_kwqe_destroy));
  	fcoe_destroy.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY;
  	fcoe_destroy.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
  					FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  	kwqe_arr[0] = (struct kwqe *) &fcoe_destroy;
  
  	if (hba->cnic && hba->cnic->submit_kwqes)
  		rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
  	return rc;
  }
  
  /**
   * bnx2fc_send_session_ofld_req - initiates FCoE Session offload process
   *
   * @port:		port structure pointer
   * @tgt:		bnx2fc_rport structure pointer
   */
  int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
  					struct bnx2fc_rport *tgt)
  {
  	struct fc_lport *lport = port->lport;
  	struct bnx2fc_interface *interface = port->priv;
  	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
  	struct bnx2fc_hba *hba = interface->hba;
  	struct kwqe *kwqe_arr[4];
  	struct fcoe_kwqe_conn_offload1 ofld_req1;
  	struct fcoe_kwqe_conn_offload2 ofld_req2;
  	struct fcoe_kwqe_conn_offload3 ofld_req3;
  	struct fcoe_kwqe_conn_offload4 ofld_req4;
  	struct fc_rport_priv *rdata = tgt->rdata;
  	struct fc_rport *rport = tgt->rport;
  	int num_kwqes = 4;
  	u32 port_id;
  	int rc = 0;
  	u16 conn_id;
  
  	/* Initialize offload request 1 structure */
  	memset(&ofld_req1, 0x00, sizeof(struct fcoe_kwqe_conn_offload1));
  
  	ofld_req1.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN1;
  	ofld_req1.hdr.flags =
  		(FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  
  
  	conn_id = (u16)tgt->fcoe_conn_id;
  	ofld_req1.fcoe_conn_id = conn_id;
  
  
  	ofld_req1.sq_addr_lo = (u32) tgt->sq_dma;
  	ofld_req1.sq_addr_hi = (u32)((u64) tgt->sq_dma >> 32);
  
  	ofld_req1.rq_pbl_addr_lo = (u32) tgt->rq_pbl_dma;
  	ofld_req1.rq_pbl_addr_hi = (u32)((u64) tgt->rq_pbl_dma >> 32);
  
  	ofld_req1.rq_first_pbe_addr_lo = (u32) tgt->rq_dma;
  	ofld_req1.rq_first_pbe_addr_hi =
  				(u32)((u64) tgt->rq_dma >> 32);
  
  	ofld_req1.rq_prod = 0x8000;
  
  	/* Initialize offload request 2 structure */
  	memset(&ofld_req2, 0x00, sizeof(struct fcoe_kwqe_conn_offload2));
  
  	ofld_req2.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN2;
  	ofld_req2.hdr.flags =
  		(FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  
  	ofld_req2.tx_max_fc_pay_len = rdata->maxframe_size;
  
  	ofld_req2.cq_addr_lo = (u32) tgt->cq_dma;
  	ofld_req2.cq_addr_hi = (u32)((u64)tgt->cq_dma >> 32);
  
  	ofld_req2.xferq_addr_lo = (u32) tgt->xferq_dma;
  	ofld_req2.xferq_addr_hi = (u32)((u64)tgt->xferq_dma >> 32);
  
  	ofld_req2.conn_db_addr_lo = (u32)tgt->conn_db_dma;
  	ofld_req2.conn_db_addr_hi = (u32)((u64)tgt->conn_db_dma >> 32);
  
  	/* Initialize offload request 3 structure */
  	memset(&ofld_req3, 0x00, sizeof(struct fcoe_kwqe_conn_offload3));
  
  	ofld_req3.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN3;
  	ofld_req3.hdr.flags =
  		(FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  
  	ofld_req3.vlan_tag = interface->vlan_id <<
  				FCOE_KWQE_CONN_OFFLOAD3_VLAN_ID_SHIFT;
  	ofld_req3.vlan_tag |= 3 << FCOE_KWQE_CONN_OFFLOAD3_PRIORITY_SHIFT;
  
  	port_id = fc_host_port_id(lport->host);
  	if (port_id == 0) {
  		BNX2FC_HBA_DBG(lport, "ofld_req: port_id = 0, link down?
  ");
  		return -EINVAL;
  	}
  
  	/*
  	 * Store s_id of the initiator for further reference. This will
  	 * be used during disable/destroy during linkdown processing as
  	 * when the lport is reset, the port_id also is reset to 0
  	 */
  	tgt->sid = port_id;
  	ofld_req3.s_id[0] = (port_id & 0x000000FF);
  	ofld_req3.s_id[1] = (port_id & 0x0000FF00) >> 8;
  	ofld_req3.s_id[2] = (port_id & 0x00FF0000) >> 16;
  
  	port_id = rport->port_id;
  	ofld_req3.d_id[0] = (port_id & 0x000000FF);
  	ofld_req3.d_id[1] = (port_id & 0x0000FF00) >> 8;
  	ofld_req3.d_id[2] = (port_id & 0x00FF0000) >> 16;
  
  	ofld_req3.tx_total_conc_seqs = rdata->max_seq;
  
  	ofld_req3.tx_max_conc_seqs_c3 = rdata->max_seq;
  	ofld_req3.rx_max_fc_pay_len  = lport->mfs;
  
  	ofld_req3.rx_total_conc_seqs = BNX2FC_MAX_SEQS;
  	ofld_req3.rx_max_conc_seqs_c3 = BNX2FC_MAX_SEQS;
  	ofld_req3.rx_open_seqs_exch_c3 = 1;
  
  	ofld_req3.confq_first_pbe_addr_lo = tgt->confq_dma;
  	ofld_req3.confq_first_pbe_addr_hi = (u32)((u64) tgt->confq_dma >> 32);
  
  	/* set mul_n_port_ids supported flag to 0, until it is supported */
  	ofld_req3.flags = 0;
  	/*
  	ofld_req3.flags |= (((lport->send_sp_features & FC_SP_FT_MNA) ? 1:0) <<
  			    FCOE_KWQE_CONN_OFFLOAD3_B_MUL_N_PORT_IDS_SHIFT);
  	*/
  	/* Info from PLOGI response */
  	ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_EDTR) ? 1 : 0) <<
  			     FCOE_KWQE_CONN_OFFLOAD3_B_E_D_TOV_RES_SHIFT);
  
  	ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
  			     FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT_SHIFT);
  
  	/*
  	 * Info from PRLI response, this info is used for sequence level error
  	 * recovery support
  	 */
  	if (tgt->dev_type == TYPE_TAPE) {
  		ofld_req3.flags |= 1 <<
  				    FCOE_KWQE_CONN_OFFLOAD3_B_CONF_REQ_SHIFT;
  		ofld_req3.flags |= (((rdata->flags & FC_RP_FLAGS_REC_SUPPORTED)
  				    ? 1 : 0) <<
  				    FCOE_KWQE_CONN_OFFLOAD3_B_REC_VALID_SHIFT);
  	}
  
  	/* vlan flag */
  	ofld_req3.flags |= (interface->vlan_enabled <<
  			    FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG_SHIFT);
  
  	/* C2_VALID and ACK flags are not set as they are not supported */
  
  
  	/* Initialize offload request 4 structure */
  	memset(&ofld_req4, 0x00, sizeof(struct fcoe_kwqe_conn_offload4));
  	ofld_req4.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN4;
  	ofld_req4.hdr.flags =
  		(FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  
  	ofld_req4.e_d_tov_timer_val = lport->e_d_tov / 20;
  
  
  	ofld_req4.src_mac_addr_lo[0] =  port->data_src_addr[5];
  							/* local mac */
  	ofld_req4.src_mac_addr_lo[1] =  port->data_src_addr[4];
  	ofld_req4.src_mac_addr_mid[0] =  port->data_src_addr[3];
  	ofld_req4.src_mac_addr_mid[1] =  port->data_src_addr[2];
  	ofld_req4.src_mac_addr_hi[0] =  port->data_src_addr[1];
  	ofld_req4.src_mac_addr_hi[1] =  port->data_src_addr[0];
  	ofld_req4.dst_mac_addr_lo[0] =  ctlr->dest_addr[5];
  							/* fcf mac */
  	ofld_req4.dst_mac_addr_lo[1] = ctlr->dest_addr[4];
  	ofld_req4.dst_mac_addr_mid[0] = ctlr->dest_addr[3];
  	ofld_req4.dst_mac_addr_mid[1] = ctlr->dest_addr[2];
  	ofld_req4.dst_mac_addr_hi[0] = ctlr->dest_addr[1];
  	ofld_req4.dst_mac_addr_hi[1] = ctlr->dest_addr[0];
  
  	ofld_req4.lcq_addr_lo = (u32) tgt->lcq_dma;
  	ofld_req4.lcq_addr_hi = (u32)((u64) tgt->lcq_dma >> 32);
  
  	ofld_req4.confq_pbl_base_addr_lo = (u32) tgt->confq_pbl_dma;
  	ofld_req4.confq_pbl_base_addr_hi =
  					(u32)((u64) tgt->confq_pbl_dma >> 32);
  
  	kwqe_arr[0] = (struct kwqe *) &ofld_req1;
  	kwqe_arr[1] = (struct kwqe *) &ofld_req2;
  	kwqe_arr[2] = (struct kwqe *) &ofld_req3;
  	kwqe_arr[3] = (struct kwqe *) &ofld_req4;
  
  	if (hba->cnic && hba->cnic->submit_kwqes)
  		rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
  
  	return rc;
  }
  
  /**
   * bnx2fc_send_session_enable_req - initiates FCoE Session enablement
   *
   * @port:		port structure pointer
   * @tgt:		bnx2fc_rport structure pointer
   */
  int bnx2fc_send_session_enable_req(struct fcoe_port *port,
  					struct bnx2fc_rport *tgt)
  {
  	struct kwqe *kwqe_arr[2];
  	struct bnx2fc_interface *interface = port->priv;
  	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
  	struct bnx2fc_hba *hba = interface->hba;
  	struct fcoe_kwqe_conn_enable_disable enbl_req;
  	struct fc_lport *lport = port->lport;
  	struct fc_rport *rport = tgt->rport;
  	int num_kwqes = 1;
  	int rc = 0;
  	u32 port_id;
  
  	memset(&enbl_req, 0x00,
  	       sizeof(struct fcoe_kwqe_conn_enable_disable));
  	enbl_req.hdr.op_code = FCOE_KWQE_OPCODE_ENABLE_CONN;
  	enbl_req.hdr.flags =
  		(FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  
  	enbl_req.src_mac_addr_lo[0] =  port->data_src_addr[5];
  							/* local mac */
  	enbl_req.src_mac_addr_lo[1] =  port->data_src_addr[4];
  	enbl_req.src_mac_addr_mid[0] =  port->data_src_addr[3];
  	enbl_req.src_mac_addr_mid[1] =  port->data_src_addr[2];
  	enbl_req.src_mac_addr_hi[0] =  port->data_src_addr[1];
  	enbl_req.src_mac_addr_hi[1] =  port->data_src_addr[0];
  	memcpy(tgt->src_addr, port->data_src_addr, ETH_ALEN);
  
  	enbl_req.dst_mac_addr_lo[0] =  ctlr->dest_addr[5];
  	enbl_req.dst_mac_addr_lo[1] =  ctlr->dest_addr[4];
  	enbl_req.dst_mac_addr_mid[0] = ctlr->dest_addr[3];
  	enbl_req.dst_mac_addr_mid[1] = ctlr->dest_addr[2];
  	enbl_req.dst_mac_addr_hi[0] = ctlr->dest_addr[1];
  	enbl_req.dst_mac_addr_hi[1] = ctlr->dest_addr[0];
  
  	port_id = fc_host_port_id(lport->host);
  	if (port_id != tgt->sid) {
  		printk(KERN_ERR PFX "WARN: enable_req port_id = 0x%x,"
  				"sid = 0x%x
  ", port_id, tgt->sid);
  		port_id = tgt->sid;
  	}
  	enbl_req.s_id[0] = (port_id & 0x000000FF);
  	enbl_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
  	enbl_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
  
  	port_id = rport->port_id;
  	enbl_req.d_id[0] = (port_id & 0x000000FF);
  	enbl_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
  	enbl_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
  	enbl_req.vlan_tag = interface->vlan_id <<
  				FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
  	enbl_req.vlan_tag |= 3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
  	enbl_req.vlan_flag = interface->vlan_enabled;
  	enbl_req.context_id = tgt->context_id;
  	enbl_req.conn_id = tgt->fcoe_conn_id;
  
  	kwqe_arr[0] = (struct kwqe *) &enbl_req;
  
  	if (hba->cnic && hba->cnic->submit_kwqes)
  		rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
  	return rc;
  }
  
  /**
   * bnx2fc_send_session_disable_req - initiates FCoE Session disable
   *
   * @port:		port structure pointer
   * @tgt:		bnx2fc_rport structure pointer
   */
  int bnx2fc_send_session_disable_req(struct fcoe_port *port,
  				    struct bnx2fc_rport *tgt)
  {
  	struct bnx2fc_interface *interface = port->priv;
  	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
  	struct bnx2fc_hba *hba = interface->hba;
  	struct fcoe_kwqe_conn_enable_disable disable_req;
  	struct kwqe *kwqe_arr[2];
  	struct fc_rport *rport = tgt->rport;
  	int num_kwqes = 1;
  	int rc = 0;
  	u32 port_id;
  
  	memset(&disable_req, 0x00,
  	       sizeof(struct fcoe_kwqe_conn_enable_disable));
  	disable_req.hdr.op_code = FCOE_KWQE_OPCODE_DISABLE_CONN;
  	disable_req.hdr.flags =
  		(FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  
  	disable_req.src_mac_addr_lo[0] =  tgt->src_addr[5];
  	disable_req.src_mac_addr_lo[1] =  tgt->src_addr[4];
  	disable_req.src_mac_addr_mid[0] =  tgt->src_addr[3];
  	disable_req.src_mac_addr_mid[1] =  tgt->src_addr[2];
  	disable_req.src_mac_addr_hi[0] =  tgt->src_addr[1];
  	disable_req.src_mac_addr_hi[1] =  tgt->src_addr[0];
  
  	disable_req.dst_mac_addr_lo[0] =  ctlr->dest_addr[5];
  	disable_req.dst_mac_addr_lo[1] =  ctlr->dest_addr[4];
  	disable_req.dst_mac_addr_mid[0] = ctlr->dest_addr[3];
  	disable_req.dst_mac_addr_mid[1] = ctlr->dest_addr[2];
  	disable_req.dst_mac_addr_hi[0] = ctlr->dest_addr[1];
  	disable_req.dst_mac_addr_hi[1] = ctlr->dest_addr[0];
  
  	port_id = tgt->sid;
  	disable_req.s_id[0] = (port_id & 0x000000FF);
  	disable_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
  	disable_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
  
  
  	port_id = rport->port_id;
  	disable_req.d_id[0] = (port_id & 0x000000FF);
  	disable_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
  	disable_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
  	disable_req.context_id = tgt->context_id;
  	disable_req.conn_id = tgt->fcoe_conn_id;
  	disable_req.vlan_tag = interface->vlan_id <<
  				FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
  	disable_req.vlan_tag |=
  			3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
  	disable_req.vlan_flag = interface->vlan_enabled;
  
  	kwqe_arr[0] = (struct kwqe *) &disable_req;
  
  	if (hba->cnic && hba->cnic->submit_kwqes)
  		rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
  
  	return rc;
  }
  
  /**
   * bnx2fc_send_session_destroy_req - initiates FCoE Session destroy
   *
   * @port:		port structure pointer
   * @tgt:		bnx2fc_rport structure pointer
   */
  int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
  					struct bnx2fc_rport *tgt)
  {
  	struct fcoe_kwqe_conn_destroy destroy_req;
  	struct kwqe *kwqe_arr[2];
  	int num_kwqes = 1;
  	int rc = 0;
  
  	memset(&destroy_req, 0x00, sizeof(struct fcoe_kwqe_conn_destroy));
  	destroy_req.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY_CONN;
  	destroy_req.hdr.flags =
  		(FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  
  	destroy_req.context_id = tgt->context_id;
  	destroy_req.conn_id = tgt->fcoe_conn_id;
  
  	kwqe_arr[0] = (struct kwqe *) &destroy_req;
  
  	if (hba->cnic && hba->cnic->submit_kwqes)
  		rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
  
  	return rc;
  }
  
  static bool is_valid_lport(struct bnx2fc_hba *hba, struct fc_lport *lport)
  {
  	struct bnx2fc_lport *blport;
  
  	spin_lock_bh(&hba->hba_lock);
  	list_for_each_entry(blport, &hba->vports, list) {
  		if (blport->lport == lport) {
  			spin_unlock_bh(&hba->hba_lock);
  			return true;
  		}
  	}
  	spin_unlock_bh(&hba->hba_lock);
  	return false;
  
  }
  
  
  static void bnx2fc_unsol_els_work(struct work_struct *work)
  {
  	struct bnx2fc_unsol_els *unsol_els;
  	struct fc_lport *lport;
  	struct bnx2fc_hba *hba;
  	struct fc_frame *fp;
  
  	unsol_els = container_of(work, struct bnx2fc_unsol_els, unsol_els_work);
  	lport = unsol_els->lport;
  	fp = unsol_els->fp;
  	hba = unsol_els->hba;
  	if (is_valid_lport(hba, lport))
  		fc_exch_recv(lport, fp);
  	kfree(unsol_els);
  }
  
  void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
  				   unsigned char *buf,
  				   u32 frame_len, u16 l2_oxid)
  {
  	struct fcoe_port *port = tgt->port;
  	struct fc_lport *lport = port->lport;
  	struct bnx2fc_interface *interface = port->priv;
  	struct bnx2fc_unsol_els *unsol_els;
  	struct fc_frame_header *fh;
  	struct fc_frame *fp;
  	struct sk_buff *skb;
  	u32 payload_len;
  	u32 crc;
  	u8 op;
  
  
  	unsol_els = kzalloc(sizeof(*unsol_els), GFP_ATOMIC);
  	if (!unsol_els) {
  		BNX2FC_TGT_DBG(tgt, "Unable to allocate unsol_work
  ");
  		return;
  	}
  
  	BNX2FC_TGT_DBG(tgt, "l2_frame_compl l2_oxid = 0x%x, frame_len = %d
  ",
  		l2_oxid, frame_len);
  
  	payload_len = frame_len - sizeof(struct fc_frame_header);
  
  	fp = fc_frame_alloc(lport, payload_len);
  	if (!fp) {
  		printk(KERN_ERR PFX "fc_frame_alloc failure
  ");
  		kfree(unsol_els);
  		return;
  	}
  
  	fh = (struct fc_frame_header *) fc_frame_header_get(fp);
  	/* Copy FC Frame header and payload into the frame */
  	memcpy(fh, buf, frame_len);
  
  	if (l2_oxid != FC_XID_UNKNOWN)
  		fh->fh_ox_id = htons(l2_oxid);
  
  	skb = fp_skb(fp);
  
  	if ((fh->fh_r_ctl == FC_RCTL_ELS_REQ) ||
  	    (fh->fh_r_ctl == FC_RCTL_ELS_REP)) {
  
  		if (fh->fh_type == FC_TYPE_ELS) {
  			op = fc_frame_payload_op(fp);
  			if ((op == ELS_TEST) ||	(op == ELS_ESTC) ||
  			    (op == ELS_FAN) || (op == ELS_CSU)) {
  				/*
  				 * No need to reply for these
  				 * ELS requests
  				 */
  				printk(KERN_ERR PFX "dropping ELS 0x%x
  ", op);
  				kfree_skb(skb);
  				kfree(unsol_els);
  				return;
  			}
  		}
  		crc = fcoe_fc_crc(fp);
  		fc_frame_init(fp);
  		fr_dev(fp) = lport;
  		fr_sof(fp) = FC_SOF_I3;
  		fr_eof(fp) = FC_EOF_T;
  		fr_crc(fp) = cpu_to_le32(~crc);
  		unsol_els->lport = lport;
  		unsol_els->hba = interface->hba;
  		unsol_els->fp = fp;
  		INIT_WORK(&unsol_els->unsol_els_work, bnx2fc_unsol_els_work);
  		queue_work(bnx2fc_wq, &unsol_els->unsol_els_work);
  	} else {
  		BNX2FC_HBA_DBG(lport, "fh_r_ctl = 0x%x
  ", fh->fh_r_ctl);
  		kfree_skb(skb);
  		kfree(unsol_els);
  	}
  }
  
  static void bnx2fc_process_unsol_compl(struct bnx2fc_rport *tgt, u16 wqe)
  {
  	u8 num_rq;
  	struct fcoe_err_report_entry *err_entry;
  	unsigned char *rq_data;
  	unsigned char *buf = NULL, *buf1;
  	int i;
  	u16 xid;
  	u32 frame_len, len;
  	struct bnx2fc_cmd *io_req = NULL;
  	struct fcoe_task_ctx_entry *task, *task_page;
  	struct bnx2fc_interface *interface = tgt->port->priv;
  	struct bnx2fc_hba *hba = interface->hba;
  	int task_idx, index;
  	int rc = 0;
  	u64 err_warn_bit_map;
  	u8 err_warn = 0xff;
  
  
  	BNX2FC_TGT_DBG(tgt, "Entered UNSOL COMPLETION wqe = 0x%x
  ", wqe);
  	switch (wqe & FCOE_UNSOLICITED_CQE_SUBTYPE) {
  	case FCOE_UNSOLICITED_FRAME_CQE_TYPE:
  		frame_len = (wqe & FCOE_UNSOLICITED_CQE_PKT_LEN) >>
  			     FCOE_UNSOLICITED_CQE_PKT_LEN_SHIFT;
  
  		num_rq = (frame_len + BNX2FC_RQ_BUF_SZ - 1) / BNX2FC_RQ_BUF_SZ;
  
  		spin_lock_bh(&tgt->tgt_lock);
  		rq_data = (unsigned char *)bnx2fc_get_next_rqe(tgt, num_rq);
  		spin_unlock_bh(&tgt->tgt_lock);
  
  		if (rq_data) {
  			buf = rq_data;
  		} else {
  			buf1 = buf = kmalloc((num_rq * BNX2FC_RQ_BUF_SZ),
  					      GFP_ATOMIC);
  
  			if (!buf1) {
  				BNX2FC_TGT_DBG(tgt, "Memory alloc failure
  ");
  				break;
  			}
  
  			for (i = 0; i < num_rq; i++) {
  				spin_lock_bh(&tgt->tgt_lock);
  				rq_data = (unsigned char *)
  					   bnx2fc_get_next_rqe(tgt, 1);
  				spin_unlock_bh(&tgt->tgt_lock);
  				len = BNX2FC_RQ_BUF_SZ;
  				memcpy(buf1, rq_data, len);
  				buf1 += len;
  			}
  		}
  		bnx2fc_process_l2_frame_compl(tgt, buf, frame_len,
  					      FC_XID_UNKNOWN);
  
  		if (buf != rq_data)
  			kfree(buf);
  		spin_lock_bh(&tgt->tgt_lock);
  		bnx2fc_return_rqe(tgt, num_rq);
  		spin_unlock_bh(&tgt->tgt_lock);
  		break;
  
  	case FCOE_ERROR_DETECTION_CQE_TYPE:
  		/*
  		 * In case of error reporting CQE a single RQ entry
  		 * is consumed.
  		 */
  		spin_lock_bh(&tgt->tgt_lock);
  		num_rq = 1;
  		err_entry = (struct fcoe_err_report_entry *)
  			     bnx2fc_get_next_rqe(tgt, 1);
  		xid = err_entry->fc_hdr.ox_id;
  		BNX2FC_TGT_DBG(tgt, "Unsol Error Frame OX_ID = 0x%x
  ", xid);
  		BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x
  ",
  			err_entry->data.err_warn_bitmap_hi,
  			err_entry->data.err_warn_bitmap_lo);
  		BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x
  ",
  			err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
  
  
  		if (xid > hba->max_xid) {
  			BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range
  ",
  				   xid);
  			goto ret_err_rqe;
  		}
  
  		task_idx = xid / BNX2FC_TASKS_PER_PAGE;
  		index = xid % BNX2FC_TASKS_PER_PAGE;
  		task_page = (struct fcoe_task_ctx_entry *)
  					hba->task_ctx[task_idx];
  		task = &(task_page[index]);
  
  		io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
  		if (!io_req)
  			goto ret_err_rqe;
  
  		if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
  			printk(KERN_ERR PFX "err_warn: Not a SCSI cmd
  ");
  			goto ret_err_rqe;
  		}
  
  		if (test_and_clear_bit(BNX2FC_FLAG_IO_CLEANUP,
  				       &io_req->req_flags)) {
  			BNX2FC_IO_DBG(io_req, "unsol_err: cleanup in "
  					    "progress.. ignore unsol err
  ");
  			goto ret_err_rqe;
  		}
  
  		err_warn_bit_map = (u64)
  			((u64)err_entry->data.err_warn_bitmap_hi << 32) |
  			(u64)err_entry->data.err_warn_bitmap_lo;
  		for (i = 0; i < BNX2FC_NUM_ERR_BITS; i++) {
  			if (err_warn_bit_map & (u64)((u64)1 << i)) {
  				err_warn = i;
  				break;
  			}
  		}
  
  		/*
  		 * If ABTS is already in progress, and FW error is
  		 * received after that, do not cancel the timeout_work
  		 * and let the error recovery continue by explicitly
  		 * logging out the target, when the ABTS eventually
  		 * times out.
  		 */
  		if (test_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags)) {
  			printk(KERN_ERR PFX "err_warn: io_req (0x%x) already "
  					    "in ABTS processing
  ", xid);
  			goto ret_err_rqe;
  		}
  		BNX2FC_TGT_DBG(tgt, "err = 0x%x
  ", err_warn);
  		if (tgt->dev_type != TYPE_TAPE)
  			goto skip_rec;
  		switch (err_warn) {
  		case FCOE_ERROR_CODE_REC_TOV_TIMER_EXPIRATION:
  		case FCOE_ERROR_CODE_DATA_OOO_RO:
  		case FCOE_ERROR_CODE_COMMON_INCORRECT_SEQ_CNT:
  		case FCOE_ERROR_CODE_DATA_SOFI3_SEQ_ACTIVE_SET:
  		case FCOE_ERROR_CODE_FCP_RSP_OPENED_SEQ:
  		case FCOE_ERROR_CODE_DATA_SOFN_SEQ_ACTIVE_RESET:
  			BNX2FC_TGT_DBG(tgt, "REC TOV popped for xid - 0x%x
  ",
  				   xid);
  			memcpy(&io_req->err_entry, err_entry,
  			       sizeof(struct fcoe_err_report_entry));
  			if (!test_bit(BNX2FC_FLAG_SRR_SENT,
  				      &io_req->req_flags)) {
  				spin_unlock_bh(&tgt->tgt_lock);
  				rc = bnx2fc_send_rec(io_req);
  				spin_lock_bh(&tgt->tgt_lock);
  
  				if (rc)
  					goto skip_rec;
  			} else
  				printk(KERN_ERR PFX "SRR in progress
  ");
  			goto ret_err_rqe;
  			break;
  		default:
  			break;
  		}
  
  skip_rec:
  		set_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags);
  		/*
  		 * Cancel the timeout_work, as we received IO
  		 * completion with FW error.
  		 */
  		if (cancel_delayed_work(&io_req->timeout_work))
  			kref_put(&io_req->refcount, bnx2fc_cmd_release);
  
  		rc = bnx2fc_initiate_abts(io_req);
  		if (rc != SUCCESS) {
  			printk(KERN_ERR PFX "err_warn: initiate_abts "
  				"failed xid = 0x%x. issue cleanup
  ",
  				io_req->xid);
  			bnx2fc_initiate_cleanup(io_req);
  		}
  ret_err_rqe:
  		bnx2fc_return_rqe(tgt, 1);
  		spin_unlock_bh(&tgt->tgt_lock);
  		break;
  
  	case FCOE_WARNING_DETECTION_CQE_TYPE:
  		/*
  		 *In case of warning reporting CQE a single RQ entry
  		 * is consumes.
  		 */
  		spin_lock_bh(&tgt->tgt_lock);
  		num_rq = 1;
  		err_entry = (struct fcoe_err_report_entry *)
  			     bnx2fc_get_next_rqe(tgt, 1);
  		xid = cpu_to_be16(err_entry->fc_hdr.ox_id);
  		BNX2FC_TGT_DBG(tgt, "Unsol Warning Frame OX_ID = 0x%x
  ", xid);
  		BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x",
  			err_entry->data.err_warn_bitmap_hi,
  			err_entry->data.err_warn_bitmap_lo);
  		BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x",
  			err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
  
  		if (xid > hba->max_xid) {
  			BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range
  ", xid);
  			goto ret_warn_rqe;
  		}
  
  		err_warn_bit_map = (u64)
  			((u64)err_entry->data.err_warn_bitmap_hi << 32) |
  			(u64)err_entry->data.err_warn_bitmap_lo;
  		for (i = 0; i < BNX2FC_NUM_ERR_BITS; i++) {
  			if (err_warn_bit_map & (u64) (1 << i)) {
  				err_warn = i;
  				break;
  			}
  		}
  		BNX2FC_TGT_DBG(tgt, "warn = 0x%x
  ", err_warn);
  
  		task_idx = xid / BNX2FC_TASKS_PER_PAGE;
  		index = xid % BNX2FC_TASKS_PER_PAGE;
  		task_page = (struct fcoe_task_ctx_entry *)
  			     interface->hba->task_ctx[task_idx];
  		task = &(task_page[index]);
  		io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
  		if (!io_req)
  			goto ret_warn_rqe;
  
  		if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
  			printk(KERN_ERR PFX "err_warn: Not a SCSI cmd
  ");
  			goto ret_warn_rqe;
  		}
  
  		memcpy(&io_req->err_entry, err_entry,
  		       sizeof(struct fcoe_err_report_entry));
  
  		if (err_warn == FCOE_ERROR_CODE_REC_TOV_TIMER_EXPIRATION)
  			/* REC_TOV is not a warning code */
  			BUG_ON(1);
  		else
  			BNX2FC_TGT_DBG(tgt, "Unsolicited warning
  ");
  ret_warn_rqe:
  		bnx2fc_return_rqe(tgt, 1);
  		spin_unlock_bh(&tgt->tgt_lock);
  		break;
  
  	default:
  		printk(KERN_ERR PFX "Unsol Compl: Invalid CQE Subtype
  ");
  		break;
  	}
  }
  
  void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe)
  {
  	struct fcoe_task_ctx_entry *task;
  	struct fcoe_task_ctx_entry *task_page;
  	struct fcoe_port *port = tgt->port;
  	struct bnx2fc_interface *interface = port->priv;
  	struct bnx2fc_hba *hba = interface->hba;
  	struct bnx2fc_cmd *io_req;
  	int task_idx, index;
  	u16 xid;
  	u8  cmd_type;
  	u8 rx_state = 0;
  	u8 num_rq;
  
  	spin_lock_bh(&tgt->tgt_lock);
  	xid = wqe & FCOE_PEND_WQ_CQE_TASK_ID;
  	if (xid >= hba->max_tasks) {
  		printk(KERN_ERR PFX "ERROR:xid out of range
  ");
  		spin_unlock_bh(&tgt->tgt_lock);
  		return;
  	}
  	task_idx = xid / BNX2FC_TASKS_PER_PAGE;
  	index = xid % BNX2FC_TASKS_PER_PAGE;
  	task_page = (struct fcoe_task_ctx_entry *)hba->task_ctx[task_idx];
  	task = &(task_page[index]);
  
  	num_rq = ((task->rxwr_txrd.var_ctx.rx_flags &
  		   FCOE_TCE_RX_WR_TX_RD_VAR_NUM_RQ_WQE) >>
  		   FCOE_TCE_RX_WR_TX_RD_VAR_NUM_RQ_WQE_SHIFT);
  
  	io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
  
  	if (io_req == NULL) {
  		printk(KERN_ERR PFX "ERROR? cq_compl - io_req is NULL
  ");
  		spin_unlock_bh(&tgt->tgt_lock);
  		return;
  	}
  
  	/* Timestamp IO completion time */
  	cmd_type = io_req->cmd_type;
  
  	rx_state = ((task->rxwr_txrd.var_ctx.rx_flags &
  		    FCOE_TCE_RX_WR_TX_RD_VAR_RX_STATE) >>
  		    FCOE_TCE_RX_WR_TX_RD_VAR_RX_STATE_SHIFT);
  
  	/* Process other IO completion types */
  	switch (cmd_type) {
  	case BNX2FC_SCSI_CMD:
  		if (rx_state == FCOE_TASK_RX_STATE_COMPLETED) {
  			bnx2fc_process_scsi_cmd_compl(io_req, task, num_rq);
  			spin_unlock_bh(&tgt->tgt_lock);
  			return;
  		}
  
  		if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
  			bnx2fc_process_abts_compl(io_req, task, num_rq);
  		else if (rx_state ==
  			 FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
  			bnx2fc_process_cleanup_compl(io_req, task, num_rq);
  		else
  			printk(KERN_ERR PFX "Invalid rx state - %d
  ",
  				rx_state);
  		break;
  
  	case BNX2FC_TASK_MGMT_CMD:
  		BNX2FC_IO_DBG(io_req, "Processing TM complete
  ");
  		bnx2fc_process_tm_compl(io_req, task, num_rq);
  		break;
  
  	case BNX2FC_ABTS:
  		/*
  		 * ABTS request received by firmware. ABTS response
  		 * will be delivered to the task belonging to the IO
  		 * that was aborted
  		 */
  		BNX2FC_IO_DBG(io_req, "cq_compl- ABTS sent out by fw
  ");
  		kref_put(&io_req->refcount, bnx2fc_cmd_release);
  		break;
  
  	case BNX2FC_ELS:
  		if (rx_state == FCOE_TASK_RX_STATE_COMPLETED)
  			bnx2fc_process_els_compl(io_req, task, num_rq);
  		else if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
  			bnx2fc_process_abts_compl(io_req, task, num_rq);
  		else if (rx_state ==
  			 FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
  			bnx2fc_process_cleanup_compl(io_req, task, num_rq);
  		else
  			printk(KERN_ERR PFX "Invalid rx state =  %d
  ",
  				rx_state);
  		break;
  
  	case BNX2FC_CLEANUP:
  		BNX2FC_IO_DBG(io_req, "cq_compl- cleanup resp rcvd
  ");
  		kref_put(&io_req->refcount, bnx2fc_cmd_release);
  		break;
  
  	case BNX2FC_SEQ_CLEANUP:
  		BNX2FC_IO_DBG(io_req, "cq_compl(0x%x) - seq cleanup resp
  ",
  			      io_req->xid);
  		bnx2fc_process_seq_cleanup_compl(io_req, task, rx_state);
  		kref_put(&io_req->refcount, bnx2fc_cmd_release);
  		break;
  
  	default:
  		printk(KERN_ERR PFX "Invalid cmd_type %d
  ", cmd_type);
  		break;
  	}
  	spin_unlock_bh(&tgt->tgt_lock);
  }
  
  void bnx2fc_arm_cq(struct bnx2fc_rport *tgt)
  {
  	struct b577xx_fcoe_rx_doorbell *rx_db = &tgt->rx_db;
  	u32 msg;
  
  	wmb();
  	rx_db->doorbell_cq_cons = tgt->cq_cons_idx | (tgt->cq_curr_toggle_bit <<
  			FCOE_CQE_TOGGLE_BIT_SHIFT);
  	msg = *((u32 *)rx_db);
  	writel(cpu_to_le32(msg), tgt->ctx_base);
  	mmiowb();
  
  }
  
  struct bnx2fc_work *bnx2fc_alloc_work(struct bnx2fc_rport *tgt, u16 wqe)
  {
  	struct bnx2fc_work *work;
  	work = kzalloc(sizeof(struct bnx2fc_work), GFP_ATOMIC);
  	if (!work)
  		return NULL;
  
  	INIT_LIST_HEAD(&work->list);
  	work->tgt = tgt;
  	work->wqe = wqe;
  	return work;
  }
  
  int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt)
  {
  	struct fcoe_cqe *cq;
  	u32 cq_cons;
  	struct fcoe_cqe *cqe;
  	u32 num_free_sqes = 0;
  	u32 num_cqes = 0;
  	u16 wqe;
  
  	/*
  	 * cq_lock is a low contention lock used to protect
  	 * the CQ data structure from being freed up during
  	 * the upload operation
  	 */
  	spin_lock_bh(&tgt->cq_lock);
  
  	if (!tgt->cq) {
  		printk(KERN_ERR PFX "process_new_cqes: cq is NULL
  ");
  		spin_unlock_bh(&tgt->cq_lock);
  		return 0;
  	}
  	cq = tgt->cq;
  	cq_cons = tgt->cq_cons_idx;
  	cqe = &cq[cq_cons];
  
  	while (((wqe = cqe->wqe) & FCOE_CQE_TOGGLE_BIT) ==
  	       (tgt->cq_curr_toggle_bit <<
  	       FCOE_CQE_TOGGLE_BIT_SHIFT)) {
  
  		/* new entry on the cq */
  		if (wqe & FCOE_CQE_CQE_TYPE) {
  			/* Unsolicited event notification */
  			bnx2fc_process_unsol_compl(tgt, wqe);
  		} else {
  			/* Pending work request completion */
  			struct bnx2fc_work *work = NULL;
  			struct bnx2fc_percpu_s *fps = NULL;
  			unsigned int cpu = wqe % num_possible_cpus();
  
  			fps = &per_cpu(bnx2fc_percpu, cpu);
  			spin_lock_bh(&fps->fp_work_lock);
  			if (unlikely(!fps->iothread))
  				goto unlock;
  
  			work = bnx2fc_alloc_work(tgt, wqe);
  			if (work)
  				list_add_tail(&work->list,
  					      &fps->work_list);
  unlock:
  			spin_unlock_bh(&fps->fp_work_lock);
  
  			/* Pending work request completion */
  			if (fps->iothread && work)
  				wake_up_process(fps->iothread);
  			else
  				bnx2fc_process_cq_compl(tgt, wqe);
  			num_free_sqes++;
  		}
  		cqe++;
  		tgt->cq_cons_idx++;
  		num_cqes++;
  
  		if (tgt->cq_cons_idx == BNX2FC_CQ_WQES_MAX) {
  			tgt->cq_cons_idx = 0;
  			cqe = cq;
  			tgt->cq_curr_toggle_bit =
  				1 - tgt->cq_curr_toggle_bit;
  		}
  	}
  	if (num_cqes) {
  		/* Arm CQ only if doorbell is mapped */
  		if (tgt->ctx_base)
  			bnx2fc_arm_cq(tgt);
  		atomic_add(num_free_sqes, &tgt->free_sqes);
  	}
  	spin_unlock_bh(&tgt->cq_lock);
  	return 0;
  }
  
  /**
   * bnx2fc_fastpath_notification - process global event queue (KCQ)
   *
   * @hba:		adapter structure pointer
   * @new_cqe_kcqe:	pointer to newly DMA'd KCQ entry
   *
   * Fast path event notification handler
   */
  static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
  					struct fcoe_kcqe *new_cqe_kcqe)
  {
  	u32 conn_id = new_cqe_kcqe->fcoe_conn_id;
  	struct bnx2fc_rport *tgt = hba->tgt_ofld_list[conn_id];
  
  	if (!tgt) {
  		printk(KERN_ERR PFX "conn_id 0x%x not valid
  ", conn_id);
  		return;
  	}
  
  	bnx2fc_process_new_cqes(tgt);
  }
  
  /**
   * bnx2fc_process_ofld_cmpl - process FCoE session offload completion
   *
   * @hba:	adapter structure pointer
   * @ofld_kcqe:	connection offload kcqe pointer
   *
   * handle session offload completion, enable the session if offload is
   * successful.
   */
  static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
  					struct fcoe_kcqe *ofld_kcqe)
  {
  	struct bnx2fc_rport		*tgt;
  	struct fcoe_port		*port;
  	struct bnx2fc_interface		*interface;
  	u32				conn_id;
  	u32				context_id;
  
  	conn_id = ofld_kcqe->fcoe_conn_id;
  	context_id = ofld_kcqe->fcoe_conn_context_id;
  	tgt = hba->tgt_ofld_list[conn_id];
  	if (!tgt) {
  		printk(KERN_ALERT PFX "ERROR:ofld_cmpl: No pending ofld req
  ");
  		return;
  	}
  	BNX2FC_TGT_DBG(tgt, "Entered ofld compl - context_id = 0x%x
  ",
  		ofld_kcqe->fcoe_conn_context_id);
  	port = tgt->port;
  	interface = tgt->port->priv;
  	if (hba != interface->hba) {
  		printk(KERN_ERR PFX "ERROR:ofld_cmpl: HBA mis-match
  ");
  		goto ofld_cmpl_err;
  	}
  	/*
  	 * cnic has allocated a context_id for this session; use this
  	 * while enabling the session.
  	 */
  	tgt->context_id = context_id;
  	if (ofld_kcqe->completion_status) {
  		if (ofld_kcqe->completion_status ==
  				FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) {
  			printk(KERN_ERR PFX "unable to allocate FCoE context "
  				"resources
  ");
  			set_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE, &tgt->flags);
  		}
  	} else {
  		/* FW offload request successfully completed */
  		set_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
  	}
  ofld_cmpl_err:
  	set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
  	wake_up_interruptible(&tgt->ofld_wait);
  }
  
  /**
   * bnx2fc_process_enable_conn_cmpl - process FCoE session enable completion
   *
   * @hba:	adapter structure pointer
   * @ofld_kcqe:	connection offload kcqe pointer
   *
   * handle session enable completion, mark the rport as ready
   */
  
  static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
  						struct fcoe_kcqe *ofld_kcqe)
  {
  	struct bnx2fc_rport		*tgt;
  	struct bnx2fc_interface		*interface;
  	u32				conn_id;
  	u32				context_id;
  
  	context_id = ofld_kcqe->fcoe_conn_context_id;
  	conn_id = ofld_kcqe->fcoe_conn_id;
  	tgt = hba->tgt_ofld_list[conn_id];
  	if (!tgt) {
  		printk(KERN_ERR PFX "ERROR:enbl_cmpl: No pending ofld req
  ");
  		return;
  	}
  
  	BNX2FC_TGT_DBG(tgt, "Enable compl - context_id = 0x%x
  ",
  		ofld_kcqe->fcoe_conn_context_id);
  
  	/*
  	 * context_id should be the same for this target during offload
  	 * and enable
  	 */
  	if (tgt->context_id != context_id) {
  		printk(KERN_ERR PFX "context id mis-match
  ");
  		return;
  	}
  	interface = tgt->port->priv;
  	if (hba != interface->hba) {
  		printk(KERN_ERR PFX "bnx2fc-enbl_cmpl: HBA mis-match
  ");
  		goto enbl_cmpl_err;
  	}
  	if (!ofld_kcqe->completion_status)
  		/* enable successful - rport ready for issuing IOs */
  		set_bit(BNX2FC_FLAG_ENABLED, &tgt->flags);
  
  enbl_cmpl_err:
  	set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
  	wake_up_interruptible(&tgt->ofld_wait);
  }
  
  static void bnx2fc_process_conn_disable_cmpl(struct bnx2fc_hba *hba,
  					struct fcoe_kcqe *disable_kcqe)
  {
  
  	struct bnx2fc_rport		*tgt;
  	u32				conn_id;
  
  	conn_id = disable_kcqe->fcoe_conn_id;
  	tgt = hba->tgt_ofld_list[conn_id];
  	if (!tgt) {
  		printk(KERN_ERR PFX "ERROR: disable_cmpl: No disable req
  ");
  		return;
  	}
  
  	BNX2FC_TGT_DBG(tgt, PFX "disable_cmpl: conn_id %d
  ", conn_id);
  
  	if (disable_kcqe->completion_status) {
  		printk(KERN_ERR PFX "Disable failed with cmpl status %d
  ",
  			disable_kcqe->completion_status);
  		set_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags);
  		set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
  		wake_up_interruptible(&tgt->upld_wait);
  	} else {
  		/* disable successful */
  		BNX2FC_TGT_DBG(tgt, "disable successful
  ");
  		clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
  		clear_bit(BNX2FC_FLAG_ENABLED, &tgt->flags);
  		set_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
  		set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
  		wake_up_interruptible(&tgt->upld_wait);
  	}
  }
  
  static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
  					struct fcoe_kcqe *destroy_kcqe)
  {
  	struct bnx2fc_rport		*tgt;
  	u32				conn_id;
  
  	conn_id = destroy_kcqe->fcoe_conn_id;
  	tgt = hba->tgt_ofld_list[conn_id];
  	if (!tgt) {
  		printk(KERN_ERR PFX "destroy_cmpl: No destroy req
  ");
  		return;
  	}
  
  	BNX2FC_TGT_DBG(tgt, "destroy_cmpl: conn_id %d
  ", conn_id);
  
  	if (destroy_kcqe->completion_status) {
  		printk(KERN_ERR PFX "Destroy conn failed, cmpl status %d
  ",
  			destroy_kcqe->completion_status);
  		return;
  	} else {
  		/* destroy successful */
  		BNX2FC_TGT_DBG(tgt, "upload successful
  ");
  		clear_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
  		set_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags);
  		set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
  		wake_up_interruptible(&tgt->upld_wait);
  	}
  }
  
  static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code)
  {
  	switch (err_code) {
  	case FCOE_KCQE_COMPLETION_STATUS_INVALID_OPCODE:
  		printk(KERN_ERR PFX "init_failure due to invalid opcode
  ");
  		break;
  
  	case FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE:
  		printk(KERN_ERR PFX "init failed due to ctx alloc failure
  ");
  		break;
  
  	case FCOE_KCQE_COMPLETION_STATUS_NIC_ERROR:
  		printk(KERN_ERR PFX "init_failure due to NIC error
  ");
  		break;
  	case FCOE_KCQE_COMPLETION_STATUS_ERROR:
  		printk(KERN_ERR PFX "init failure due to compl status err
  ");
  		break;
  	case FCOE_KCQE_COMPLETION_STATUS_WRONG_HSI_VERSION:
  		printk(KERN_ERR PFX "init failure due to HSI mismatch
  ");
  		break;
  	default:
  		printk(KERN_ERR PFX "Unknown Error code %d
  ", err_code);
  	}
  }
  
  /**
   * bnx2fc_indicae_kcqe - process KCQE
   *
   * @hba:	adapter structure pointer
   * @kcqe:	kcqe pointer
   * @num_cqe:	Number of completion queue elements
   *
   * Generic KCQ event handler
   */
  void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
  					u32 num_cqe)
  {
  	struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
  	int i = 0;
  	struct fcoe_kcqe *kcqe = NULL;
  
  	while (i < num_cqe) {
  		kcqe = (struct fcoe_kcqe *) kcq[i++];
  
  		switch (kcqe->op_code) {
  		case FCOE_KCQE_OPCODE_CQ_EVENT_NOTIFICATION:
  			bnx2fc_fastpath_notification(hba, kcqe);
  			break;
  
  		case FCOE_KCQE_OPCODE_OFFLOAD_CONN:
  			bnx2fc_process_ofld_cmpl(hba, kcqe);
  			break;
  
  		case FCOE_KCQE_OPCODE_ENABLE_CONN:
  			bnx2fc_process_enable_conn_cmpl(hba, kcqe);
  			break;
  
  		case FCOE_KCQE_OPCODE_INIT_FUNC:
  			if (kcqe->completion_status !=
  					FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
  				bnx2fc_init_failure(hba,
  						kcqe->completion_status);
  			} else {
  				set_bit(ADAPTER_STATE_UP, &hba->adapter_state);
  				bnx2fc_get_link_state(hba);
  				printk(KERN_INFO PFX "[%.2x]: FCOE_INIT passed
  ",
  					(u8)hba->pcidev->bus->number);
  			}
  			break;
  
  		case FCOE_KCQE_OPCODE_DESTROY_FUNC:
  			if (kcqe->completion_status !=
  					FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
  
  				printk(KERN_ERR PFX "DESTROY failed
  ");
  			} else {
  				printk(KERN_ERR PFX "DESTROY success
  ");
  			}
  			set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
  			wake_up_interruptible(&hba->destroy_wait);
  			break;
  
  		case FCOE_KCQE_OPCODE_DISABLE_CONN:
  			bnx2fc_process_conn_disable_cmpl(hba, kcqe);
  			break;
  
  		case FCOE_KCQE_OPCODE_DESTROY_CONN:
  			bnx2fc_process_conn_destroy_cmpl(hba, kcqe);
  			break;
  
  		case FCOE_KCQE_OPCODE_STAT_FUNC:
  			if (kcqe->completion_status !=
  			    FCOE_KCQE_COMPLETION_STATUS_SUCCESS)
  				printk(KERN_ERR PFX "STAT failed
  ");
  			complete(&hba->stat_req_done);
  			break;
  
  		case FCOE_KCQE_OPCODE_FCOE_ERROR:
  			/* fall thru */
  		default:
  			printk(KERN_ERR PFX "unknown opcode 0x%x
  ",
  								kcqe->op_code);
  		}
  	}
  }
  
  void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid)
  {
  	struct fcoe_sqe *sqe;
  
  	sqe = &tgt->sq[tgt->sq_prod_idx];
  
  	/* Fill SQ WQE */
  	sqe->wqe = xid << FCOE_SQE_TASK_ID_SHIFT;
  	sqe->wqe |= tgt->sq_curr_toggle_bit << FCOE_SQE_TOGGLE_BIT_SHIFT;
  
  	/* Advance SQ Prod Idx */
  	if (++tgt->sq_prod_idx == BNX2FC_SQ_WQES_MAX) {
  		tgt->sq_prod_idx = 0;
  		tgt->sq_curr_toggle_bit = 1 - tgt->sq_curr_toggle_bit;
  	}
  }
  
  void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt)
  {
  	struct b577xx_doorbell_set_prod *sq_db = &tgt->sq_db;
  	u32 msg;
  
  	wmb();
  	sq_db->prod = tgt->sq_prod_idx |
  				(tgt->sq_curr_toggle_bit << 15);
  	msg = *((u32 *)sq_db);
  	writel(cpu_to_le32(msg), tgt->ctx_base);
  	mmiowb();
  
  }
  
  int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt)
  {
  	u32 context_id = tgt->context_id;
  	struct fcoe_port *port = tgt->port;
  	u32 reg_off;
  	resource_size_t reg_base;
  	struct bnx2fc_interface *interface = port->priv;
  	struct bnx2fc_hba *hba = interface->hba;
  
  	reg_base = pci_resource_start(hba->pcidev,
  					BNX2X_DOORBELL_PCI_BAR);
  	reg_off = (1 << BNX2X_DB_SHIFT) * (context_id & 0x1FFFF);
  	tgt->ctx_base = ioremap_nocache(reg_base + reg_off, 4);
  	if (!tgt->ctx_base)
  		return -ENOMEM;
  	return 0;
  }
  
  char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items)
  {
  	char *buf = (char *)tgt->rq + (tgt->rq_cons_idx * BNX2FC_RQ_BUF_SZ);
  
  	if (tgt->rq_cons_idx + num_items > BNX2FC_RQ_WQES_MAX)
  		return NULL;
  
  	tgt->rq_cons_idx += num_items;
  
  	if (tgt->rq_cons_idx >= BNX2FC_RQ_WQES_MAX)
  		tgt->rq_cons_idx -= BNX2FC_RQ_WQES_MAX;
  
  	return buf;
  }
  
  void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items)
  {
  	/* return the rq buffer */
  	u32 next_prod_idx = tgt->rq_prod_idx + num_items;
  	if ((next_prod_idx & 0x7fff) == BNX2FC_RQ_WQES_MAX) {
  		/* Wrap around RQ */
  		next_prod_idx += 0x8000 - BNX2FC_RQ_WQES_MAX;
  	}
  	tgt->rq_prod_idx = next_prod_idx;
  	tgt->conn_db->rq_prod = tgt->rq_prod_idx;
  }
  
  void bnx2fc_init_seq_cleanup_task(struct bnx2fc_cmd *seq_clnp_req,
  				  struct fcoe_task_ctx_entry *task,
  				  struct bnx2fc_cmd *orig_io_req,
  				  u32 offset)
  {
  	struct scsi_cmnd *sc_cmd = orig_io_req->sc_cmd;
  	struct bnx2fc_rport *tgt = seq_clnp_req->tgt;
  	struct bnx2fc_interface *interface = tgt->port->priv;
  	struct fcoe_bd_ctx *bd = orig_io_req->bd_tbl->bd_tbl;
  	struct fcoe_task_ctx_entry *orig_task;
  	struct fcoe_task_ctx_entry *task_page;
  	struct fcoe_ext_mul_sges_ctx *sgl;
  	u8 task_type = FCOE_TASK_TYPE_SEQUENCE_CLEANUP;
  	u8 orig_task_type;
  	u16 orig_xid = orig_io_req->xid;
  	u32 context_id = tgt->context_id;
  	u64 phys_addr = (u64)orig_io_req->bd_tbl->bd_tbl_dma;
  	u32 orig_offset = offset;
  	int bd_count;
  	int orig_task_idx, index;
  	int i;
  
  	memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
  
  	if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
  		orig_task_type = FCOE_TASK_TYPE_WRITE;
  	else
  		orig_task_type = FCOE_TASK_TYPE_READ;
  
  	/* Tx flags */
  	task->txwr_rxrd.const_ctx.tx_flags =
  				FCOE_TASK_TX_STATE_SEQUENCE_CLEANUP <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
  	/* init flags */
  	task->txwr_rxrd.const_ctx.init_flags = task_type <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
  	task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
  	task->rxwr_txrd.const_ctx.init_flags = context_id <<
  				FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
  	task->rxwr_txrd.const_ctx.init_flags = context_id <<
  				FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
  
  	task->txwr_rxrd.union_ctx.cleanup.ctx.cleaned_task_id = orig_xid;
  
  	task->txwr_rxrd.union_ctx.cleanup.ctx.rolled_tx_seq_cnt = 0;
  	task->txwr_rxrd.union_ctx.cleanup.ctx.rolled_tx_data_offset = offset;
  
  	bd_count = orig_io_req->bd_tbl->bd_valid;
  
  	/* obtain the appropriate bd entry from relative offset */
  	for (i = 0; i < bd_count; i++) {
  		if (offset < bd[i].buf_len)
  			break;
  		offset -= bd[i].buf_len;
  	}
  	phys_addr += (i * sizeof(struct fcoe_bd_ctx));
  
  	if (orig_task_type == FCOE_TASK_TYPE_WRITE) {
  		task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
  				(u32)phys_addr;
  		task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
  				(u32)((u64)phys_addr >> 32);
  		task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
  				bd_count;
  		task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_off =
  				offset; /* adjusted offset */
  		task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_idx = i;
  	} else {
  		orig_task_idx = orig_xid / BNX2FC_TASKS_PER_PAGE;
  		index = orig_xid % BNX2FC_TASKS_PER_PAGE;
  
  		task_page = (struct fcoe_task_ctx_entry *)
  			     interface->hba->task_ctx[orig_task_idx];
  		orig_task = &(task_page[index]);
  
  		/* Multiple SGEs were used for this IO */
  		sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
  		sgl->mul_sgl.cur_sge_addr.lo = (u32)phys_addr;
  		sgl->mul_sgl.cur_sge_addr.hi = (u32)((u64)phys_addr >> 32);
  		sgl->mul_sgl.sgl_size = bd_count;
  		sgl->mul_sgl.cur_sge_off = offset; /*adjusted offset */
  		sgl->mul_sgl.cur_sge_idx = i;
  
  		memset(&task->rxwr_only.rx_seq_ctx, 0,
  		       sizeof(struct fcoe_rx_seq_ctx));
  		task->rxwr_only.rx_seq_ctx.low_exp_ro = orig_offset;
  		task->rxwr_only.rx_seq_ctx.high_exp_ro = orig_offset;
  	}
  }
  void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
  			      struct fcoe_task_ctx_entry *task,
  			      u16 orig_xid)
  {
  	u8 task_type = FCOE_TASK_TYPE_EXCHANGE_CLEANUP;
  	struct bnx2fc_rport *tgt = io_req->tgt;
  	u32 context_id = tgt->context_id;
  
  	memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
  
  	/* Tx Write Rx Read */
  	/* init flags */
  	task->txwr_rxrd.const_ctx.init_flags = task_type <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
  	task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
  	if (tgt->dev_type == TYPE_TAPE)
  		task->txwr_rxrd.const_ctx.init_flags |=
  				FCOE_TASK_DEV_TYPE_TAPE <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
  	else
  		task->txwr_rxrd.const_ctx.init_flags |=
  				FCOE_TASK_DEV_TYPE_DISK <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
  	task->txwr_rxrd.union_ctx.cleanup.ctx.cleaned_task_id = orig_xid;
  
  	/* Tx flags */
  	task->txwr_rxrd.const_ctx.tx_flags =
  				FCOE_TASK_TX_STATE_EXCHANGE_CLEANUP <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
  
  	/* Rx Read Tx Write */
  	task->rxwr_txrd.const_ctx.init_flags = context_id <<
  				FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
  	task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
  				FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
  }
  
  void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
  				struct fcoe_task_ctx_entry *task)
  {
  	struct bnx2fc_mp_req *mp_req = &(io_req->mp_req);
  	struct bnx2fc_rport *tgt = io_req->tgt;
  	struct fc_frame_header *fc_hdr;
  	struct fcoe_ext_mul_sges_ctx *sgl;
  	u8 task_type = 0;
  	u64 *hdr;
  	u64 temp_hdr[3];
  	u32 context_id;
  
  
  	/* Obtain task_type */
  	if ((io_req->cmd_type == BNX2FC_TASK_MGMT_CMD) ||
  	    (io_req->cmd_type == BNX2FC_ELS)) {
  		task_type = FCOE_TASK_TYPE_MIDPATH;
  	} else if (io_req->cmd_type == BNX2FC_ABTS) {
  		task_type = FCOE_TASK_TYPE_ABTS;
  	}
  
  	memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
  
  	/* Setup the task from io_req for easy reference */
  	io_req->task = task;
  
  	BNX2FC_IO_DBG(io_req, "Init MP task for cmd_type = %d task_type = %d
  ",
  		io_req->cmd_type, task_type);
  
  	/* Tx only */
  	if ((task_type == FCOE_TASK_TYPE_MIDPATH) ||
  	    (task_type == FCOE_TASK_TYPE_UNSOLICITED)) {
  		task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
  				(u32)mp_req->mp_req_bd_dma;
  		task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
  				(u32)((u64)mp_req->mp_req_bd_dma >> 32);
  		task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size = 1;
  	}
  
  	/* Tx Write Rx Read */
  	/* init flags */
  	task->txwr_rxrd.const_ctx.init_flags = task_type <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
  	if (tgt->dev_type == TYPE_TAPE)
  		task->txwr_rxrd.const_ctx.init_flags |=
  				FCOE_TASK_DEV_TYPE_TAPE <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
  	else
  		task->txwr_rxrd.const_ctx.init_flags |=
  				FCOE_TASK_DEV_TYPE_DISK <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
  	task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
  
  	/* tx flags */
  	task->txwr_rxrd.const_ctx.tx_flags = FCOE_TASK_TX_STATE_INIT <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
  
  	/* Rx Write Tx Read */
  	task->rxwr_txrd.const_ctx.data_2_trns = io_req->data_xfer_len;
  
  	/* rx flags */
  	task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
  				FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
  
  	context_id = tgt->context_id;
  	task->rxwr_txrd.const_ctx.init_flags = context_id <<
  				FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
  
  	fc_hdr = &(mp_req->req_fc_hdr);
  	if (task_type == FCOE_TASK_TYPE_MIDPATH) {
  		fc_hdr->fh_ox_id = cpu_to_be16(io_req->xid);
  		fc_hdr->fh_rx_id = htons(0xffff);
  		task->rxwr_txrd.var_ctx.rx_id = 0xffff;
  	} else if (task_type == FCOE_TASK_TYPE_UNSOLICITED) {
  		fc_hdr->fh_rx_id = cpu_to_be16(io_req->xid);
  	}
  
  	/* Fill FC Header into middle path buffer */
  	hdr = (u64 *) &task->txwr_rxrd.union_ctx.tx_frame.fc_hdr;
  	memcpy(temp_hdr, fc_hdr, sizeof(temp_hdr));
  	hdr[0] = cpu_to_be64(temp_hdr[0]);
  	hdr[1] = cpu_to_be64(temp_hdr[1]);
  	hdr[2] = cpu_to_be64(temp_hdr[2]);
  
  	/* Rx Only */
  	if (task_type == FCOE_TASK_TYPE_MIDPATH) {
  		sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
  
  		sgl->mul_sgl.cur_sge_addr.lo = (u32)mp_req->mp_resp_bd_dma;
  		sgl->mul_sgl.cur_sge_addr.hi =
  				(u32)((u64)mp_req->mp_resp_bd_dma >> 32);
  		sgl->mul_sgl.sgl_size = 1;
  	}
  }
  
  void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
  			     struct fcoe_task_ctx_entry *task)
  {
  	u8 task_type;
  	struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
  	struct io_bdt *bd_tbl = io_req->bd_tbl;
  	struct bnx2fc_rport *tgt = io_req->tgt;
  	struct fcoe_cached_sge_ctx *cached_sge;
  	struct fcoe_ext_mul_sges_ctx *sgl;
  	int dev_type = tgt->dev_type;
  	u64 *fcp_cmnd;
  	u64 tmp_fcp_cmnd[4];
  	u32 context_id;
  	int cnt, i;
  	int bd_count;
  
  	memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
  
  	/* Setup the task from io_req for easy reference */
  	io_req->task = task;
  
  	if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
  		task_type = FCOE_TASK_TYPE_WRITE;
  	else
  		task_type = FCOE_TASK_TYPE_READ;
  
  	/* Tx only */
  	bd_count = bd_tbl->bd_valid;
  	cached_sge = &task->rxwr_only.union_ctx.read_info.sgl_ctx.cached_sge;
  	if (task_type == FCOE_TASK_TYPE_WRITE) {
  		if ((dev_type == TYPE_DISK) && (bd_count == 1)) {
  			struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
  
  			task->txwr_only.sgl_ctx.cached_sge.cur_buf_addr.lo =
  			cached_sge->cur_buf_addr.lo =
  					fcoe_bd_tbl->buf_addr_lo;
  			task->txwr_only.sgl_ctx.cached_sge.cur_buf_addr.hi =
  			cached_sge->cur_buf_addr.hi =
  					fcoe_bd_tbl->buf_addr_hi;
  			task->txwr_only.sgl_ctx.cached_sge.cur_buf_rem =
  			cached_sge->cur_buf_rem =
  					fcoe_bd_tbl->buf_len;
  
  			task->txwr_rxrd.const_ctx.init_flags |= 1 <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
  		} else {
  			task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
  					(u32)bd_tbl->bd_tbl_dma;
  			task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
  					(u32)((u64)bd_tbl->bd_tbl_dma >> 32);
  			task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
  					bd_tbl->bd_valid;
  		}
  	}
  
  	/*Tx Write Rx Read */
  	/* Init state to NORMAL */
  	task->txwr_rxrd.const_ctx.init_flags |= task_type <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
  	if (dev_type == TYPE_TAPE) {
  		task->txwr_rxrd.const_ctx.init_flags |=
  				FCOE_TASK_DEV_TYPE_TAPE <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
  		io_req->rec_retry = 0;
  		io_req->rec_retry = 0;
  	} else
  		task->txwr_rxrd.const_ctx.init_flags |=
  				FCOE_TASK_DEV_TYPE_DISK <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
  	task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
  	/* tx flags */
  	task->txwr_rxrd.const_ctx.tx_flags = FCOE_TASK_TX_STATE_NORMAL <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
  
  	/* Set initial seq counter */
  	task->txwr_rxrd.union_ctx.tx_seq.ctx.seq_cnt = 1;
  
  	/* Fill FCP_CMND IU */
  	fcp_cmnd = (u64 *)
  		    task->txwr_rxrd.union_ctx.fcp_cmd.opaque;
  	bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)&tmp_fcp_cmnd);
  
  	/* swap fcp_cmnd */
  	cnt = sizeof(struct fcp_cmnd) / sizeof(u64);
  
  	for (i = 0; i < cnt; i++) {
  		*fcp_cmnd = cpu_to_be64(tmp_fcp_cmnd[i]);
  		fcp_cmnd++;
  	}
  
  	/* Rx Write Tx Read */
  	task->rxwr_txrd.const_ctx.data_2_trns = io_req->data_xfer_len;
  
  	context_id = tgt->context_id;
  	task->rxwr_txrd.const_ctx.init_flags = context_id <<
  				FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
  
  	/* rx flags */
  	/* Set state to "waiting for the first packet" */
  	task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
  				FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
  
  	task->rxwr_txrd.var_ctx.rx_id = 0xffff;
  
  	/* Rx Only */
  	if (task_type != FCOE_TASK_TYPE_READ)
  		return;
  
  	sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
  	bd_count = bd_tbl->bd_valid;
  
  	if (dev_type == TYPE_DISK) {
  		if (bd_count == 1) {
  
  			struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
  
  			cached_sge->cur_buf_addr.lo = fcoe_bd_tbl->buf_addr_lo;
  			cached_sge->cur_buf_addr.hi = fcoe_bd_tbl->buf_addr_hi;
  			cached_sge->cur_buf_rem = fcoe_bd_tbl->buf_len;
  			task->txwr_rxrd.const_ctx.init_flags |= 1 <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
  		} else if (bd_count == 2) {
  			struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
  
  			cached_sge->cur_buf_addr.lo = fcoe_bd_tbl->buf_addr_lo;
  			cached_sge->cur_buf_addr.hi = fcoe_bd_tbl->buf_addr_hi;
  			cached_sge->cur_buf_rem = fcoe_bd_tbl->buf_len;
  
  			fcoe_bd_tbl++;
  			cached_sge->second_buf_addr.lo =
  						 fcoe_bd_tbl->buf_addr_lo;
  			cached_sge->second_buf_addr.hi =
  						fcoe_bd_tbl->buf_addr_hi;
  			cached_sge->second_buf_rem = fcoe_bd_tbl->buf_len;
  			task->txwr_rxrd.const_ctx.init_flags |= 1 <<
  				FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
  		} else {
  
  			sgl->mul_sgl.cur_sge_addr.lo = (u32)bd_tbl->bd_tbl_dma;
  			sgl->mul_sgl.cur_sge_addr.hi =
  					(u32)((u64)bd_tbl->bd_tbl_dma >> 32);
  			sgl->mul_sgl.sgl_size = bd_count;
  		}
  	} else {
  		sgl->mul_sgl.cur_sge_addr.lo = (u32)bd_tbl->bd_tbl_dma;
  		sgl->mul_sgl.cur_sge_addr.hi =
  				(u32)((u64)bd_tbl->bd_tbl_dma >> 32);
  		sgl->mul_sgl.sgl_size = bd_count;
  	}
  }
  
  /**
   * bnx2fc_setup_task_ctx - allocate and map task context
   *
   * @hba:	pointer to adapter structure
   *
   * allocate memory for task context, and associated BD table to be used
   * by firmware
   *
   */
  int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
  {
  	int rc = 0;
  	struct regpair *task_ctx_bdt;
  	dma_addr_t addr;
  	int task_ctx_arr_sz;
  	int i;
  
  	/*
  	 * Allocate task context bd table. A page size of bd table
  	 * can map 256 buffers. Each buffer contains 32 task context
  	 * entries. Hence the limit with one page is 8192 task context
  	 * entries.
  	 */
  	hba->task_ctx_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
  						  PAGE_SIZE,
  						  &hba->task_ctx_bd_dma,
  						  GFP_KERNEL);
  	if (!hba->task_ctx_bd_tbl) {
  		printk(KERN_ERR PFX "unable to allocate task context BDT
  ");
  		rc = -1;
  		goto out;
  	}
  	memset(hba->task_ctx_bd_tbl, 0, PAGE_SIZE);
  
  	/*
  	 * Allocate task_ctx which is an array of pointers pointing to
  	 * a page containing 32 task contexts
  	 */
  	task_ctx_arr_sz = (hba->max_tasks / BNX2FC_TASKS_PER_PAGE);
  	hba->task_ctx = kzalloc((task_ctx_arr_sz * sizeof(void *)),
  				 GFP_KERNEL);
  	if (!hba->task_ctx) {
  		printk(KERN_ERR PFX "unable to allocate task context array
  ");
  		rc = -1;
  		goto out1;
  	}
  
  	/*
  	 * Allocate task_ctx_dma which is an array of dma addresses
  	 */
  	hba->task_ctx_dma = kmalloc((task_ctx_arr_sz *
  					sizeof(dma_addr_t)), GFP_KERNEL);
  	if (!hba->task_ctx_dma) {
  		printk(KERN_ERR PFX "unable to alloc context mapping array
  ");
  		rc = -1;
  		goto out2;
  	}
  
  	task_ctx_bdt = (struct regpair *)hba->task_ctx_bd_tbl;
  	for (i = 0; i < task_ctx_arr_sz; i++) {
  
  		hba->task_ctx[i] = dma_alloc_coherent(&hba->pcidev->dev,
  						      PAGE_SIZE,
  						      &hba->task_ctx_dma[i],
  						      GFP_KERNEL);
  		if (!hba->task_ctx[i]) {
  			printk(KERN_ERR PFX "unable to alloc task context
  ");
  			rc = -1;
  			goto out3;
  		}
  		memset(hba->task_ctx[i], 0, PAGE_SIZE);
  		addr = (u64)hba->task_ctx_dma[i];
  		task_ctx_bdt->hi = cpu_to_le32((u64)addr >> 32);
  		task_ctx_bdt->lo = cpu_to_le32((u32)addr);
  		task_ctx_bdt++;
  	}
  	return 0;
  
  out3:
  	for (i = 0; i < task_ctx_arr_sz; i++) {
  		if (hba->task_ctx[i]) {
  
  			dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
  				hba->task_ctx[i], hba->task_ctx_dma[i]);
  			hba->task_ctx[i] = NULL;
  		}
  	}
  
  	kfree(hba->task_ctx_dma);
  	hba->task_ctx_dma = NULL;
  out2:
  	kfree(hba->task_ctx);
  	hba->task_ctx = NULL;
  out1:
  	dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
  			hba->task_ctx_bd_tbl, hba->task_ctx_bd_dma);
  	hba->task_ctx_bd_tbl = NULL;
  out:
  	return rc;
  }
  
  void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba)
  {
  	int task_ctx_arr_sz;
  	int i;
  
  	if (hba->task_ctx_bd_tbl) {
  		dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
  				    hba->task_ctx_bd_tbl,
  				    hba->task_ctx_bd_dma);
  		hba->task_ctx_bd_tbl = NULL;
  	}
  
  	task_ctx_arr_sz = (hba->max_tasks / BNX2FC_TASKS_PER_PAGE);
  	if (hba->task_ctx) {
  		for (i = 0; i < task_ctx_arr_sz; i++) {
  			if (hba->task_ctx[i]) {
  				dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
  						    hba->task_ctx[i],
  						    hba->task_ctx_dma[i]);
  				hba->task_ctx[i] = NULL;
  			}
  		}
  		kfree(hba->task_ctx);
  		hba->task_ctx = NULL;
  	}
  
  	kfree(hba->task_ctx_dma);
  	hba->task_ctx_dma = NULL;
  }
  
  static void bnx2fc_free_hash_table(struct bnx2fc_hba *hba)
  {
  	int i;
  	int segment_count;
  	u32 *pbl;
  
  	if (hba->hash_tbl_segments) {
  
  		pbl = hba->hash_tbl_pbl;
  		if (pbl) {
  			segment_count = hba->hash_tbl_segment_count;
  			for (i = 0; i < segment_count; ++i) {
  				dma_addr_t dma_address;
  
  				dma_address = le32_to_cpu(*pbl);
  				++pbl;
  				dma_address += ((u64)le32_to_cpu(*pbl)) << 32;
  				++pbl;
  				dma_free_coherent(&hba->pcidev->dev,
  						  BNX2FC_HASH_TBL_CHUNK_SIZE,
  						  hba->hash_tbl_segments[i],
  						  dma_address);
  			}
  		}
  
  		kfree(hba->hash_tbl_segments);
  		hba->hash_tbl_segments = NULL;
  	}
  
  	if (hba->hash_tbl_pbl) {
  		dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
  				    hba->hash_tbl_pbl,
  				    hba->hash_tbl_pbl_dma);
  		hba->hash_tbl_pbl = NULL;
  	}
  }
  
  static int bnx2fc_allocate_hash_table(struct bnx2fc_hba *hba)
  {
  	int i;
  	int hash_table_size;
  	int segment_count;
  	int segment_array_size;
  	int dma_segment_array_size;
  	dma_addr_t *dma_segment_array;
  	u32 *pbl;
  
  	hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
  		sizeof(struct fcoe_hash_table_entry);
  
  	segment_count = hash_table_size + BNX2FC_HASH_TBL_CHUNK_SIZE - 1;
  	segment_count /= BNX2FC_HASH_TBL_CHUNK_SIZE;
  	hba->hash_tbl_segment_count = segment_count;
  
  	segment_array_size = segment_count * sizeof(*hba->hash_tbl_segments);
  	hba->hash_tbl_segments = kzalloc(segment_array_size, GFP_KERNEL);
  	if (!hba->hash_tbl_segments) {
  		printk(KERN_ERR PFX "hash table pointers alloc failed
  ");
  		return -ENOMEM;
  	}
  	dma_segment_array_size = segment_count * sizeof(*dma_segment_array);
  	dma_segment_array = kzalloc(dma_segment_array_size, GFP_KERNEL);
  	if (!dma_segment_array) {
  		printk(KERN_ERR PFX "hash table pointers (dma) alloc failed
  ");
  		goto cleanup_ht;
  	}
  
  	for (i = 0; i < segment_count; ++i) {
  		hba->hash_tbl_segments[i] =
  			dma_alloc_coherent(&hba->pcidev->dev,
  					   BNX2FC_HASH_TBL_CHUNK_SIZE,
  					   &dma_segment_array[i],
  					   GFP_KERNEL);
  		if (!hba->hash_tbl_segments[i]) {
  			printk(KERN_ERR PFX "hash segment alloc failed
  ");
  			goto cleanup_dma;
  		}
  		memset(hba->hash_tbl_segments[i], 0,
  		       BNX2FC_HASH_TBL_CHUNK_SIZE);
  	}
  
  	hba->hash_tbl_pbl = dma_alloc_coherent(&hba->pcidev->dev,
  					       PAGE_SIZE,
  					       &hba->hash_tbl_pbl_dma,
  					       GFP_KERNEL);
  	if (!hba->hash_tbl_pbl) {
  		printk(KERN_ERR PFX "hash table pbl alloc failed
  ");
  		goto cleanup_dma;
  	}
  	memset(hba->hash_tbl_pbl, 0, PAGE_SIZE);
  
  	pbl = hba->hash_tbl_pbl;
  	for (i = 0; i < segment_count; ++i) {
  		u64 paddr = dma_segment_array[i];
  		*pbl = cpu_to_le32((u32) paddr);
  		++pbl;
  		*pbl = cpu_to_le32((u32) (paddr >> 32));
  		++pbl;
  	}
  	pbl = hba->hash_tbl_pbl;
  	i = 0;
  	while (*pbl && *(pbl + 1)) {
  		u32 lo;
  		u32 hi;
  		lo = *pbl;
  		++pbl;
  		hi = *pbl;
  		++pbl;
  		++i;
  	}
  	kfree(dma_segment_array);
  	return 0;
  
  cleanup_dma:
  	for (i = 0; i < segment_count; ++i) {
  		if (hba->hash_tbl_segments[i])
  			dma_free_coherent(&hba->pcidev->dev,
  					    BNX2FC_HASH_TBL_CHUNK_SIZE,
  					    hba->hash_tbl_segments[i],
  					    dma_segment_array[i]);
  	}
  
  	kfree(dma_segment_array);
  
  cleanup_ht:
  	kfree(hba->hash_tbl_segments);
  	hba->hash_tbl_segments = NULL;
  	return -ENOMEM;
  }
  
  /**
   * bnx2fc_setup_fw_resc - Allocate and map hash table and dummy buffer
   *
   * @hba:	Pointer to adapter structure
   *
   */
  int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba)
  {
  	u64 addr;
  	u32 mem_size;
  	int i;
  
  	if (bnx2fc_allocate_hash_table(hba))
  		return -ENOMEM;
  
  	mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
  	hba->t2_hash_tbl_ptr = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
  						  &hba->t2_hash_tbl_ptr_dma,
  						  GFP_KERNEL);
  	if (!hba->t2_hash_tbl_ptr) {
  		printk(KERN_ERR PFX "unable to allocate t2 hash table ptr
  ");
  		bnx2fc_free_fw_resc(hba);
  		return -ENOMEM;
  	}
  	memset(hba->t2_hash_tbl_ptr, 0x00, mem_size);
  
  	mem_size = BNX2FC_NUM_MAX_SESS *
  				sizeof(struct fcoe_t2_hash_table_entry);
  	hba->t2_hash_tbl = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
  					      &hba->t2_hash_tbl_dma,
  					      GFP_KERNEL);
  	if (!hba->t2_hash_tbl) {
  		printk(KERN_ERR PFX "unable to allocate t2 hash table
  ");
  		bnx2fc_free_fw_resc(hba);
  		return -ENOMEM;
  	}
  	memset(hba->t2_hash_tbl, 0x00, mem_size);
  	for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
  		addr = (unsigned long) hba->t2_hash_tbl_dma +
  			 ((i+1) * sizeof(struct fcoe_t2_hash_table_entry));
  		hba->t2_hash_tbl[i].next.lo = addr & 0xffffffff;
  		hba->t2_hash_tbl[i].next.hi = addr >> 32;
  	}
  
  	hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev,
  					       PAGE_SIZE, &hba->dummy_buf_dma,
  					       GFP_KERNEL);
  	if (!hba->dummy_buffer) {
  		printk(KERN_ERR PFX "unable to alloc MP Dummy Buffer
  ");
  		bnx2fc_free_fw_resc(hba);
  		return -ENOMEM;
  	}
  
  	hba->stats_buffer = dma_alloc_coherent(&hba->pcidev->dev,
  					       PAGE_SIZE,
  					       &hba->stats_buf_dma,
  					       GFP_KERNEL);
  	if (!hba->stats_buffer) {
  		printk(KERN_ERR PFX "unable to alloc Stats Buffer
  ");
  		bnx2fc_free_fw_resc(hba);
  		return -ENOMEM;
  	}
  	memset(hba->stats_buffer, 0x00, PAGE_SIZE);
  
  	return 0;
  }
  
  void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba)
  {
  	u32 mem_size;
  
  	if (hba->stats_buffer) {
  		dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
  				  hba->stats_buffer, hba->stats_buf_dma);
  		hba->stats_buffer = NULL;
  	}
  
  	if (hba->dummy_buffer) {
  		dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
  				  hba->dummy_buffer, hba->dummy_buf_dma);
  		hba->dummy_buffer = NULL;
  	}
  
  	if (hba->t2_hash_tbl_ptr) {
  		mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
  		dma_free_coherent(&hba->pcidev->dev, mem_size,
  				    hba->t2_hash_tbl_ptr,
  				    hba->t2_hash_tbl_ptr_dma);
  		hba->t2_hash_tbl_ptr = NULL;
  	}
  
  	if (hba->t2_hash_tbl) {
  		mem_size = BNX2FC_NUM_MAX_SESS *
  			    sizeof(struct fcoe_t2_hash_table_entry);
  		dma_free_coherent(&hba->pcidev->dev, mem_size,
  				    hba->t2_hash_tbl, hba->t2_hash_tbl_dma);
  		hba->t2_hash_tbl = NULL;
  	}
  	bnx2fc_free_hash_table(hba);
  }