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| author | ian <ian@FreeBSD.org> | 2015-02-13 00:17:22 +0000 |
|---|---|---|
| committer | ian <ian@FreeBSD.org> | 2015-02-13 00:17:22 +0000 |
| commit | 914dd97ca51bfe6301ae8bd78c4d92aec1e8aa48 (patch) | |
| tree | 43c6ac96fb94631a16aa8f44cdadc43c23d53050 /sys/arm/include | |
| parent | 4b65730f6b0bbf4f92fa36e1d05375784705cf4d (diff) | |
| download | FreeBSD-src-914dd97ca51bfe6301ae8bd78c4d92aec1e8aa48.zip FreeBSD-src-914dd97ca51bfe6301ae8bd78c4d92aec1e8aa48.tar.gz | |
MFC r276519:
Define a WFI macro that expands to the right form of wait-for-interrupt
depending on the architecture.
Diffstat (limited to 'sys/arm/include')
| -rw-r--r-- | sys/arm/include/asm.h | 3 | ||||
| -rw-r--r-- | sys/arm/include/sysreg.h | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/sys/arm/include/asm.h b/sys/arm/include/asm.h index 9122e6e..a182863 100644 --- a/sys/arm/include/asm.h +++ b/sys/arm/include/asm.h @@ -227,14 +227,17 @@ #define ISB isb #define DSB dsb #define DMB dmb +#define WFI wfi #elif __ARM_ARCH == 6 #define ISB mcr CP15_CP15ISB #define DSB mcr CP15_CP15DSB #define DMB mcr CP15_CP15DMB +#define WFI mcr CP15_CP15WFI #else #define ISB mcr CP15_CP15ISB #define DSB mcr CP15_CP15DSB /* DSB and DMB are the */ #define DMB mcr CP15_CP15DSB /* same prior to v6.*/ +/* No form of WFI available on v4, define nothing to get an error on use. */ #endif #endif /* !_MACHINE_ASM_H_ */ diff --git a/sys/arm/include/sysreg.h b/sys/arm/include/sysreg.h index b1c7fd3..ad29703 100644 --- a/sys/arm/include/sysreg.h +++ b/sys/arm/include/sysreg.h @@ -166,6 +166,7 @@ /* Only ARMv6: */ #define CP15_CP15DSB p15, 0, r0, c7, c10, 4 /* DSB */ #define CP15_CP15DMB p15, 0, r0, c7, c10, 5 /* DMB */ +#define CP15_CP15WFI p15, 0, r0, c7, c0, 4 /* WFI */ #endif #if __ARM_ARCH >= 7 |
