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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2008-08-03 13:02:12 -0500
committerJesse Barnes <jbarnes@virtuousgeek.org>2008-10-23 14:54:18 -0700
commit388c8c16abafc2e74dff173b5de9ee519ea8d32f (patch)
treeed1197dcbff33881b7e285c066f1e4260be6c7a4 /include
parent18b341b76cd99ce949806ccf5565900465ec2e7f (diff)
downloadop-kernel-dev-388c8c16abafc2e74dff173b5de9ee519ea8d32f.zip
op-kernel-dev-388c8c16abafc2e74dff173b5de9ee519ea8d32f.tar.gz
PCI: add routines for debugging and handling lost interrupts
We're getting a lot of storage drivers blamed for interrupt misrouting issues. This patch provides a standard way of reporting the problem ... and, if possible, correcting it. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/pci.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 752def8..c75b82b 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -546,6 +546,13 @@ struct pci_dev __deprecated *pci_find_slot(unsigned int bus,
unsigned int devfn);
#endif /* CONFIG_PCI_LEGACY */
+enum pci_lost_interrupt_reason {
+ PCI_LOST_IRQ_NO_INFORMATION = 0,
+ PCI_LOST_IRQ_DISABLE_MSI,
+ PCI_LOST_IRQ_DISABLE_MSIX,
+ PCI_LOST_IRQ_DISABLE_ACPI,
+};
+enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev);
int pci_find_capability(struct pci_dev *dev, int cap);
int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap);
int pci_find_ext_capability(struct pci_dev *dev, int cap);
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