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kernel/linux-imx6_3.14.28/drivers/misc/mei/hbm.h 1.75 KB
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  /*
   *
   * Intel Management Engine Interface (Intel MEI) Linux driver
   * Copyright (c) 2003-2012, Intel Corporation.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms and conditions of the GNU General Public License,
   * version 2, as published by the Free Software Foundation.
   *
   * This program is distributed in the hope 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 _MEI_HBM_H_
  #define _MEI_HBM_H_
  
  struct mei_device;
  struct mei_msg_hdr;
  struct mei_cl;
  
  /**
   * enum mei_hbm_state - host bus message protocol state
   *
   * @MEI_HBM_IDLE : protocol not started
   * @MEI_HBM_START : start request message was sent
   * @MEI_HBM_ENUM_CLIENTS : enumeration request was sent
   * @MEI_HBM_CLIENT_PROPERTIES : acquiring clients properties
   */
  enum mei_hbm_state {
  	MEI_HBM_IDLE = 0,
  	MEI_HBM_START,
  	MEI_HBM_STARTED,
  	MEI_HBM_ENUM_CLIENTS,
  	MEI_HBM_CLIENT_PROPERTIES,
  	MEI_HBM_STOPPED,
  };
  
  int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr);
  
  static inline void mei_hbm_hdr(struct mei_msg_hdr *hdr, size_t length)
  {
  	hdr->host_addr = 0;
  	hdr->me_addr = 0;
  	hdr->length = length;
  	hdr->msg_complete = 1;
  	hdr->reserved = 0;
  }
  
  void mei_hbm_idle(struct mei_device *dev);
  int mei_hbm_start_req(struct mei_device *dev);
  int mei_hbm_start_wait(struct mei_device *dev);
  int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl);
  int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl);
  int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl);
  bool mei_hbm_version_is_supported(struct mei_device *dev);
  
  #endif /* _MEI_HBM_H_ */