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kernel/linux-rt-4.4.41/drivers/scsi/csiostor/csio_init.h 4.37 KB
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  /*
   * This file is part of the Chelsio FCoE driver for Linux.
   *
   * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved.
   *
   * This software is available to you under a choice of one of two
   * licenses.  You may choose to be licensed under the terms of the GNU
   * General Public License (GPL) Version 2, available from the file
   * COPYING in the main directory of this source tree, or the
   * OpenIB.org BSD license below:
   *
   *     Redistribution and use in source and binary forms, with or
   *     without modification, are permitted provided that the following
   *     conditions are met:
   *
   *      - Redistributions of source code must retain the above
   *        copyright notice, this list of conditions and the following
   *        disclaimer.
   *
   *      - Redistributions in binary form must reproduce the above
   *        copyright notice, this list of conditions and the following
   *        disclaimer in the documentation and/or other materials
   *        provided with the distribution.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
   * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
   * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  #ifndef __CSIO_INIT_H__
  #define __CSIO_INIT_H__
  
  #include <linux/pci.h>
  #include <linux/if_ether.h>
  #include <scsi/scsi.h>
  #include <scsi/scsi_device.h>
  #include <scsi/scsi_host.h>
  #include <scsi/scsi_transport_fc.h>
  
  #include "csio_scsi.h"
  #include "csio_lnode.h"
  #include "csio_rnode.h"
  #include "csio_hw.h"
  
  #define CSIO_DRV_AUTHOR			"Chelsio Communications"
  #define CSIO_DRV_LICENSE		"Dual BSD/GPL"
  #define CSIO_DRV_DESC			"Chelsio FCoE driver"
  #define CSIO_DRV_VERSION		"1.0.0"
  
  extern struct fc_function_template csio_fc_transport_funcs;
  extern struct fc_function_template csio_fc_transport_vport_funcs;
  
  void csio_fchost_attr_init(struct csio_lnode *);
  
  /* INTx handlers */
  void csio_scsi_intx_handler(struct csio_hw *, void *, uint32_t,
  			       struct csio_fl_dma_buf *, void *);
  
  void csio_fwevt_intx_handler(struct csio_hw *, void *, uint32_t,
  				struct csio_fl_dma_buf *, void *);
  
  /* Common os lnode APIs */
  void csio_lnodes_block_request(struct csio_hw *);
  void csio_lnodes_unblock_request(struct csio_hw *);
  void csio_lnodes_block_by_port(struct csio_hw *, uint8_t);
  void csio_lnodes_unblock_by_port(struct csio_hw *, uint8_t);
  
  struct csio_lnode *csio_shost_init(struct csio_hw *, struct device *, bool,
  					struct csio_lnode *);
  void csio_shost_exit(struct csio_lnode *);
  void csio_lnodes_exit(struct csio_hw *, bool);
  
  /* DebugFS helper routines */
  void csio_add_debugfs_mem(struct csio_hw *, const char *,
  		unsigned int, unsigned int);
  
  static inline struct Scsi_Host *
  csio_ln_to_shost(struct csio_lnode *ln)
  {
  	return container_of((void *)ln, struct Scsi_Host, hostdata[0]);
  }
  
  /* SCSI -- locking version of get/put ioreqs  */
  static inline struct csio_ioreq *
  csio_get_scsi_ioreq_lock(struct csio_hw *hw, struct csio_scsim *scsim)
  {
  	struct csio_ioreq *ioreq;
  	unsigned long flags;
  
  	spin_lock_irqsave(&scsim->freelist_lock, flags);
  	ioreq = csio_get_scsi_ioreq(scsim);
  	spin_unlock_irqrestore(&scsim->freelist_lock, flags);
  
  	return ioreq;
  }
  
  static inline void
  csio_put_scsi_ioreq_lock(struct csio_hw *hw, struct csio_scsim *scsim,
  			 struct csio_ioreq *ioreq)
  {
  	unsigned long flags;
  
  	spin_lock_irqsave(&scsim->freelist_lock, flags);
  	csio_put_scsi_ioreq(scsim, ioreq);
  	spin_unlock_irqrestore(&scsim->freelist_lock, flags);
  }
  
  /* Called in interrupt context */
  static inline void
  csio_put_scsi_ioreq_list_lock(struct csio_hw *hw, struct csio_scsim *scsim,
  			      struct list_head *reqlist, int n)
  {
  	unsigned long flags;
  
  	spin_lock_irqsave(&scsim->freelist_lock, flags);
  	csio_put_scsi_ioreq_list(scsim, reqlist, n);
  	spin_unlock_irqrestore(&scsim->freelist_lock, flags);
  }
  
  /* Called in interrupt context */
  static inline void
  csio_put_scsi_ddp_list_lock(struct csio_hw *hw, struct csio_scsim *scsim,
  			      struct list_head *reqlist, int n)
  {
  	unsigned long flags;
  
  	spin_lock_irqsave(&hw->lock, flags);
  	csio_put_scsi_ddp_list(scsim, reqlist, n);
  	spin_unlock_irqrestore(&hw->lock, flags);
  }
  
  #endif /* ifndef __CSIO_INIT_H__ */