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kernel/linux-imx6_3.14.28/include/linux/arm-cci.h 1.94 KB
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  /*
   * CCI cache coherent interconnect support
   *
   * Copyright (C) 2013 ARM Ltd.
   *
   * 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; either version 2 of the License, or
   * (at your option) any 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.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  #ifndef __LINUX_ARM_CCI_H
  #define __LINUX_ARM_CCI_H
  
  #include <linux/errno.h>
  #include <linux/types.h>
  
  struct device_node;
  
  #ifdef CONFIG_ARM_CCI
  extern bool cci_probed(void);
  extern int cci_ace_get_port(struct device_node *dn);
  extern int cci_disable_port_by_cpu(u64 mpidr);
  extern int __cci_control_port_by_device(struct device_node *dn, bool enable);
  extern int __cci_control_port_by_index(u32 port, bool enable);
  #else
  static inline bool cci_probed(void) { return false; }
  static inline int cci_ace_get_port(struct device_node *dn)
  {
  	return -ENODEV;
  }
  static inline int cci_disable_port_by_cpu(u64 mpidr) { return -ENODEV; }
  static inline int __cci_control_port_by_device(struct device_node *dn,
  					       bool enable)
  {
  	return -ENODEV;
  }
  static inline int __cci_control_port_by_index(u32 port, bool enable)
  {
  	return -ENODEV;
  }
  #endif
  #define cci_disable_port_by_device(dev) \
  	__cci_control_port_by_device(dev, false)
  #define cci_enable_port_by_device(dev) \
  	__cci_control_port_by_device(dev, true)
  #define cci_disable_port_by_index(dev) \
  	__cci_control_port_by_index(dev, false)
  #define cci_enable_port_by_index(dev) \
  	__cci_control_port_by_index(dev, true)
  
  #endif