path: root/arch/alpha/include
diff options
authorRichard Henderson <rth@twiddle.net>2013-07-12 09:36:21 -0700
committerMatt Turner <mattst88@gmail.com>2013-11-16 16:33:15 -0800
commit7f3bbb82e0c371d6881129f776c90130ba66f051 (patch)
treee2bb143c17545c720484602fbaa829eae2e66119 /arch/alpha/include
parentfddd87d6e135924b92499917bace103e46c22d00 (diff)
alpha: Primitive support for CPU power down.
Use WTINT to wait for the next interrupt. Squash the WTINT call if the PALcode doesn't support it (e.g. MILO). No attempt is yet made to skip clock ticks during normal scheduling in order to stay in power down mode longer. Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'arch/alpha/include')
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/pal.h b/arch/alpha/include/asm/pal.h
index 6fcd2b5b08f0..e78ec9bcc768 100644
--- a/arch/alpha/include/asm/pal.h
+++ b/arch/alpha/include/asm/pal.h
@@ -89,6 +89,7 @@ __CALL_PAL_W1(wrmces, unsigned long);
__CALL_PAL_RW2(wrperfmon, unsigned long, unsigned long, unsigned long);
__CALL_PAL_W1(wrusp, unsigned long);
__CALL_PAL_W1(wrvptptr, unsigned long);
+__CALL_PAL_RW1(wtint, unsigned long, unsigned long);
* TB routines..
diff --git a/arch/alpha/include/uapi/asm/pal.h b/arch/alpha/include/uapi/asm/pal.h
index 3c0ce08e5f59..dfc8140b9088 100644
--- a/arch/alpha/include/uapi/asm/pal.h
+++ b/arch/alpha/include/uapi/asm/pal.h
@@ -46,6 +46,7 @@
#define PAL_rdusp 58
#define PAL_whami 60
#define PAL_retsys 61
+#define PAL_wtint 62
#define PAL_rti 63