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authorEric W. Biederman <ebiederm@xmission.com>2006-11-09 04:44:57 +0300
committerLinus Torvalds <torvalds@g5.osdl.org>2006-11-09 05:29:24 +0300
commitec68307cc5a8dc499e48693843bb42f6b6028458 (patch)
treeba735cbdc35819837bc53ef1385a478f5800fd7a /include/linux/htirq.h
parent64d9fe6973a9348e5211f3cc9f04b899329caeb4 (diff)
downloadlinux-ec68307cc5a8dc499e48693843bb42f6b6028458.tar.xz
[PATCH] htirq: refactor so we only have one function that writes to the chip
This refactoring actually optimizes the code a little by caching the value that we think the device is programmed with instead of reading it back from the hardware. Which simplifies the code a little and should speed things up a bit. This patch introduces the concept of a ht_irq_msg and modifies the architecture read/write routines to update this code. There is a minor consistency fix here as well as x86_64 forgot to initialize the htirq as masked. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Andi Kleen <ak@suse.de> Acked-by: Bryan O'Sullivan <bos@pathscale.com> Cc: <olson@pathscale.com> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/htirq.h')
-rw-r--r--include/linux/htirq.h11
1 files changed, 7 insertions, 4 deletions
diff --git a/include/linux/htirq.h b/include/linux/htirq.h
index 1f15ce279a23..108f0d91e11e 100644
--- a/include/linux/htirq.h
+++ b/include/linux/htirq.h
@@ -1,11 +1,14 @@
#ifndef LINUX_HTIRQ_H
#define LINUX_HTIRQ_H
+struct ht_irq_msg {
+ u32 address_lo; /* low 32 bits of the ht irq message */
+ u32 address_hi; /* high 32 bits of the it irq message */
+};
+
/* Helper functions.. */
-void write_ht_irq_low(unsigned int irq, u32 data);
-void write_ht_irq_high(unsigned int irq, u32 data);
-u32 read_ht_irq_low(unsigned int irq);
-u32 read_ht_irq_high(unsigned int irq);
+void fetch_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg);
+void write_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg);
void mask_ht_irq(unsigned int irq);
void unmask_ht_irq(unsigned int irq);