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authorBjorn Helgaas <bjorn.helgaas@hp.com>2008-12-11 11:24:23 -0700
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-01-07 11:12:50 -0800
commit57c2cf71c12318b72ebaa5720d210476b6bac4d4 (patch)
treeba071276800dc24d9232fd124c4678b2a86f86b5 /include/linux/pci.h
parent12b955ff63db0b75cfc2d4939696c57b31891ec6 (diff)
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PCI: add pci_swizzle_interrupt_pin()
This patch adds pci_swizzle_interrupt_pin(), which implements the INTx swizzling algorithm specified in Table 9-1 of the "PCI-to-PCI Bridge Architecture Specification," revision 1.2. There are many architecture-specific implementations of this swizzle that can be replaced by this common one. Reviewed-by: David Howells <dhowells@redhat.com> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include/linux/pci.h')
-rw-r--r--include/linux/pci.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index bfcb39c..58357d1 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -532,6 +532,7 @@ int __must_check pci_bus_add_device(struct pci_dev *dev);
void pci_read_bridge_bases(struct pci_bus *child);
struct resource *pci_find_parent_resource(const struct pci_dev *dev,
struct resource *res);
+u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin);
int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
extern struct pci_dev *pci_dev_get(struct pci_dev *dev);
extern void pci_dev_put(struct pci_dev *dev);