arm/common/vlock.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * vlock.h - simple voting lock implementation
0004  *
0005  * Created by:  Dave Martin, 2012-08-16
0006  * Copyright:   (C) 2012-2013  Linaro Limited
0007  */
0008
0009 #ifndef __VLOCK_H
0010 #define __VLOCK_H
0011
0012 #include <asm/mcpm.h>
0013
0014 /* Offsets and sizes are rounded to a word (4 bytes) */
0015 #define VLOCK_OWNER_OFFSET  0
0016 #define VLOCK_VOTING_OFFSET 4
0017 #define VLOCK_VOTING_SIZE   ((MAX_CPUS_PER_CLUSTER + 3) / 4 * 4)
0018 #define VLOCK_SIZE      (VLOCK_VOTING_OFFSET + VLOCK_VOTING_SIZE)
0019 #define VLOCK_OWNER_NONE    0
0020
0021 #endif /* ! __VLOCK_H */