arch/arm/common/vlock.h

   1 /*
   2  * vlock.h - simple voting lock implementation
   3  *
   4  * Created by:  Dave Martin, 2012-08-16
   5  * Copyright:   (C) 2012-2013  Linaro Limited
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  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
  17 #ifndef __VLOCK_H
  18 #define __VLOCK_H
  19
  20 #include <asm/mcpm.h>
  21
  22 /* Offsets and sizes are rounded to a word (4 bytes) */
  23 #define VLOCK_OWNER_OFFSET      0
  24 #define VLOCK_VOTING_OFFSET     4
  25 #define VLOCK_VOTING_SIZE       ((MAX_CPUS_PER_CLUSTER + 3) / 4 * 4)
  26 #define VLOCK_SIZE              (VLOCK_VOTING_OFFSET + VLOCK_VOTING_SIZE)
  27 #define VLOCK_OWNER_NONE        0
  28
  29 #endif /* ! __VLOCK_H */