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kernel/linux-rt-4.4.41/drivers/misc/vmw_vmci/vmci_doorbell.h 1.44 KB
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  /*
   * VMware VMCI Driver
   *
   * Copyright (C) 2012 VMware, Inc. All rights reserved.
   *
   * 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 version 2 and no later version.
   *
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * for more details.
   */
  
  #ifndef VMCI_DOORBELL_H
  #define VMCI_DOORBELL_H
  
  #include <linux/vmw_vmci_defs.h>
  #include <linux/types.h>
  
  #include "vmci_driver.h"
  
  /*
   * VMCINotifyResourceInfo: Used to create and destroy doorbells, and
   * generate a notification for a doorbell or queue pair.
   */
  struct vmci_dbell_notify_resource_info {
  	struct vmci_handle handle;
  	u16 resource;
  	u16 action;
  	s32 result;
  };
  
  /*
   * Structure used for checkpointing the doorbell mappings. It is
   * written to the checkpoint as is, so changing this structure will
   * break checkpoint compatibility.
   */
  struct dbell_cpt_state {
  	struct vmci_handle handle;
  	u64 bitmap_idx;
  };
  
  int vmci_dbell_host_context_notify(u32 src_cid, struct vmci_handle handle);
  int vmci_dbell_get_priv_flags(struct vmci_handle handle, u32 *priv_flags);
  
  bool vmci_dbell_register_notification_bitmap(u32 bitmap_ppn);
  void vmci_dbell_scan_notification_entries(u8 *bitmap);
  
  #endif /* VMCI_DOORBELL_H */