arch/ia64/include/asm/mmiowb.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #ifndef _ASM_IA64_MMIOWB_H
   4 #define _ASM_IA64_MMIOWB_H
   5
   6 #include <asm/machvec.h>
   7
   8 /**
   9  * ___ia64_mmiowb - I/O write barrier
  10  *
  11  * Ensure ordering of I/O space writes.  This will make sure that writes
  12  * following the barrier will arrive after all previous writes.  For most
  13  * ia64 platforms, this is a simple 'mf.a' instruction.
  14  */
  15 static inline void ___ia64_mmiowb(void)
  16 {
  17         ia64_mfa();
  18 }
  19
  20 #define __ia64_mmiowb   ___ia64_mmiowb
  21 #define mmiowb()        platform_mmiowb()
  22
  23 #include <asm-generic/mmiowb.h>
  24
  25 #endif  /* _ASM_IA64_MMIOWB_H */