text: /*
   * Copyright (C) 2012 Philippe Gerum <rpm@xenomai.org>.
   *
   * Xenomai 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.
   *
   * Xenomai 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 Xenomai; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
   * 02111-1307, USA.
   */
  
  #ifndef _XENO_ASM_BLACKFIN_ATOMIC_ASM_H
  #define _XENO_ASM_BLACKFIN_ATOMIC_ASM_H
  
  #ifndef _XENO_ASM_BLACKFIN_ATOMIC_H
  #error "please don't include asm/atomic_asm.h directly"
  #endif
  
  #ifdef __KERNEL__
  
  #include <linux/version.h>
  #include <linux/bitops.h>
  #include <asm/atomic.h>
  
  #define xnarch_atomic_xchg(ptr,v)	xchg(ptr,v)
  #define xnarch_memory_barrier()		smp_mb()
  #define xnarch_read_memory_barrier()	rmb()
  #define xnarch_write_memory_barrier()	wmb()
  
  #define xnarch_atomic_set(pcounter,i)           atomic_set(pcounter,i)
  #define xnarch_atomic_get(pcounter)             atomic_read(pcounter)
  #define xnarch_atomic_inc(pcounter)             atomic_inc(pcounter)
  #define xnarch_atomic_dec(pcounter)             atomic_dec(pcounter)
  #define xnarch_atomic_inc_and_test(pcounter)    atomic_inc_and_test(pcounter)
  #define xnarch_atomic_dec_and_test(pcounter)    atomic_dec_and_test(pcounter)
  
  #define xnarch_atomic_set_mask(pflags, mask)	\
  	rthal_atomic_set_mask((pflags), (mask))
  
  #define xnarch_atomic_clear_mask(pflags, mask)	\
  	rthal_atomic_clear_mask((pflags), (mask))
  
  #define xnarch_atomic_cmpxchg(pcounter, old, new) \
  	atomic_cmpxchg((pcounter), (old), (new))
  
  typedef atomic_t atomic_counter_t;
  typedef atomic_t xnarch_atomic_t;
  typedef unsigned long atomic_flags_t;
  
  #else /* !__KERNEL__ */
  
  #include <asm/xenomai/syscall.h>
  
  static __inline__ unsigned long xnarch_atomic_xchg(unsigned long *ptr, unsigned long x)
  {
  	unsigned long oldval;
  	XENOMAI_SYSCALL4(__xn_sys_arch,__xn_lsys_xchg,ptr,x,&oldval);
  	return oldval;
  }
  
  #define xnarch_memory_barrier()     __asm__ __volatile__("": : :"memory")
  
  #define cpu_relax()			xnarch_memory_barrier()
  #define xnarch_read_memory_barrier()	xnarch_memory_barrier()
  #define xnarch_write_memory_barrier()	xnarch_memory_barrier()
  
  #endif /* __KERNEL__ */
  
  #endif /* !_XENO_ASM_BLACKFIN_ATOMIC_ASM_H */
  