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authorEric W. Biederman <ebiederm@xmission.com>2006-10-04 05:16:55 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-04 10:55:29 -0400
commit8b955b0dddb35e398b07e217a81f8bd49400796f (patch)
tree6fc307371b6889ac08fa5a7187cde1c137c8d765 /include/asm-i386
parente78d01693be38bf93dd6bb49b86e143da450de86 (diff)
[PATCH] Initial generic hypertransport interrupt support
This patch implements two functions ht_create_irq and ht_destroy_irq for use by drivers. Several other functions are implemented as helpers for arch specific irq_chip handlers. The driver for the card I tested this on isn't yet ready to be merged. However this code is and hypertransport irqs are in use in a few other places in the kernel. Not that any of this will get merged before 2.6.19 Because the ipath-ht400 is slightly out of spec this code will need to be generalized to work there. I think all of the powerpc uses are for a plain interrupt controller in a chipset so support for native hypertransport devices is a little less interesting. However I think this is a half way decent model on how to separate arch specific and generic helper code, and I think this is a functional model of how to get the architecture dependencies out of the msi code. [akpm@osdl.org: Kconfig fix] Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Greg KH <greg@kroah.com> Cc: Andi Kleen <ak@muc.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-i386')
-rw-r--r--include/asm-i386/hypertransport.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/include/asm-i386/hypertransport.h b/include/asm-i386/hypertransport.h
new file mode 100644
index 000000000000..c16c6ff4bdd7
--- /dev/null
+++ b/include/asm-i386/hypertransport.h
@@ -0,0 +1,42 @@
1#ifndef ASM_HYPERTRANSPORT_H
2#define ASM_HYPERTRANSPORT_H
3
4/*
5 * Constants for x86 Hypertransport Interrupts.
6 */
7
8#define HT_IRQ_LOW_BASE 0xf8000000
9
10#define HT_IRQ_LOW_VECTOR_SHIFT 16
11#define HT_IRQ_LOW_VECTOR_MASK 0x00ff0000
12#define HT_IRQ_LOW_VECTOR(v) (((v) << HT_IRQ_LOW_VECTOR_SHIFT) & HT_IRQ_LOW_VECTOR_MASK)
13
14#define HT_IRQ_LOW_DEST_ID_SHIFT 8
15#define HT_IRQ_LOW_DEST_ID_MASK 0x0000ff00
16#define HT_IRQ_LOW_DEST_ID(v) (((v) << HT_IRQ_LOW_DEST_ID_SHIFT) & HT_IRQ_LOW_DEST_ID_MASK)
17
18#define HT_IRQ_LOW_DM_PHYSICAL 0x0000000
19#define HT_IRQ_LOW_DM_LOGICAL 0x0000040
20
21#define HT_IRQ_LOW_RQEOI_EDGE 0x0000000
22#define HT_IRQ_LOW_RQEOI_LEVEL 0x0000020
23
24
25#define HT_IRQ_LOW_MT_FIXED 0x0000000
26#define HT_IRQ_LOW_MT_ARBITRATED 0x0000004
27#define HT_IRQ_LOW_MT_SMI 0x0000008
28#define HT_IRQ_LOW_MT_NMI 0x000000c
29#define HT_IRQ_LOW_MT_INIT 0x0000010
30#define HT_IRQ_LOW_MT_STARTUP 0x0000014
31#define HT_IRQ_LOW_MT_EXTINT 0x0000018
32#define HT_IRQ_LOW_MT_LINT1 0x000008c
33#define HT_IRQ_LOW_MT_LINT0 0x0000098
34
35#define HT_IRQ_LOW_IRQ_MASKED 0x0000001
36
37
38#define HT_IRQ_HIGH_DEST_ID_SHIFT 0
39#define HT_IRQ_HIGH_DEST_ID_MASK 0x00ffffff
40#define HT_IRQ_HIGH_DEST_ID(v) ((((v) >> 8) << HT_IRQ_HIGH_DEST_ID_SHIFT) & HT_IRQ_HIGH_DEST_ID_MASK)
41
42#endif /* ASM_HYPERTRANSPORT_H */