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authorEric W. Biederman <ebiederm@xmission.com>2006-10-04 02:16:55 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-04 07:55:29 -0700
commit8b955b0dddb35e398b07e217a81f8bd49400796f (patch)
tree6fc307371b6889ac08fa5a7187cde1c137c8d765 /drivers/pci/Kconfig
parente78d01693be38bf93dd6bb49b86e143da450de86 (diff)
downloadop-kernel-dev-8b955b0dddb35e398b07e217a81f8bd49400796f.zip
op-kernel-dev-8b955b0dddb35e398b07e217a81f8bd49400796f.tar.gz
[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 'drivers/pci/Kconfig')
-rw-r--r--drivers/pci/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index c27e782..0af6d72 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -52,3 +52,12 @@ config PCI_DEBUG
When in doubt, say N.
+config HT_IRQ
+ bool "Interrupts on hypertransport devices"
+ default y
+ depends on PCI_MSI
+ depends on X86_LOCAL_APIC && X86_IO_APIC
+ help
+ This allows native hypertransport devices to use interrupts.
+
+ If unsure say Y.
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