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
  29 struct device_node;
  30
  31 #ifdef CONFIG_ARM_CCI
  32 extern bool cci_probed(void);
  33 #else
  34 static inline bool cci_probed(void) { return false; }
  35 #endif
  36
  37 #ifdef CONFIG_ARM_CCI400_PORT_CTRL
  38 extern int cci_ace_get_port(struct device_node *dn);
  39 extern int cci_disable_port_by_cpu(u64 mpidr);
  40 extern int __cci_control_port_by_device(struct device_node *dn, bool enable);
  41 extern int __cci_control_port_by_index(u32 port, bool enable);
  42 #else
  43 static inline int cci_ace_get_port(struct device_node *dn)
  44 {
  45         return -ENODEV;
  46 }
  47 static inline int cci_disable_port_by_cpu(u64 mpidr) { return -ENODEV; }
  48 static inline int __cci_control_port_by_device(struct device_node *dn,
  49                                                bool enable)
  50 {
  51         return -ENODEV;
  52 }
  53 static 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