LXR linux/include/linux/arm-cci.h

   1/*
   2 * CCI cache coherent interconnect support
   3 *
   4 * Copyright (C) 2013 ARM Ltd.
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21#ifndef __LINUX_ARM_CCI_H
  22#define __LINUX_ARM_CCI_H
  23
  24#include <linux/errno.h>
  25#include <linux/types.h>
  26
  27#include <asm/arm-cci.h>
  28
  29struct device_node;
  30
  31#ifdef CONFIG_ARM_CCI
  32extern bool cci_probed(void);
  33#else
  34static inline bool cci_probed(void) { return false; }
  35#endif
  36
  37#ifdef CONFIG_ARM_CCI400_PORT_CTRL
  38extern int cci_ace_get_port(struct device_node *dn);
  39extern int cci_disable_port_by_cpu(u64 mpidr);
  40extern int __cci_control_port_by_device(struct device_node *dn, bool enable);
  41extern int __cci_control_port_by_index(u32 port, bool enable);
  42#else
  43static inline int cci_ace_get_port(struct device_node *dn)
  44{
  45        return -ENODEV;
  46}
  47static inline int cci_disable_port_by_cpu(u64 mpidr) { return -ENODEV; }
  48static inline int __cci_control_port_by_device(struct device_node *dn,
  49                                               bool enable)
  50{
  51        return -ENODEV;
  52}
  53static inline int __cci_control_port_by_index(u32 port, bool enable)
  54{
  55        return -ENODEV;
  56}
  57#endif
  58
  59#define cci_disable_port_by_device(dev) \
  60        __cci_control_port_by_device(dev, false)
  61#define cci_enable_port_by_device(dev) \
  62        __cci_control_port_by_device(dev, true)
  63#define cci_disable_port_by_index(dev) \
  64        __cci_control_port_by_index(dev, false)
  65#define cci_enable_port_by_index(dev) \
  66        __cci_control_port_by_index(dev, true)
  67
  68#endif
  69