diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2006-11-08 17:44:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-11-08 18:29:24 -0800 |
| commit | ec68307cc5a8dc499e48693843bb42f6b6028458 (patch) | |
| tree | ba735cbdc35819837bc53ef1385a478f5800fd7a /include/linux | |
| parent | 64d9fe6973a9348e5211f3cc9f04b899329caeb4 (diff) | |
[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')
| -rw-r--r-- | include/linux/htirq.h | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/include/linux/htirq.h b/include/linux/htirq.h index 1f15ce279a2..108f0d91e11 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); |