From 3460a6d9cef9ac2aa997da7eff7ff1c8291b361c Mon Sep 17 00:00:00 2001 From: "Keshavamurthy, Anil S" Date: Sun, 21 Oct 2007 16:41:54 -0700 Subject: Intel IOMMU: DMAR fault handling support MSI interrupt handler registrations and fault handling support for Intel-IOMMU hadrware. This patch enables the MSI interrupts for the DMA remapping units and in the interrupt handler read the fault cause and outputs the same on to the console. Signed-off-by: Anil S Keshavamurthy Cc: Andi Kleen Cc: Peter Zijlstra Cc: Muli Ben-Yehuda Cc: "Siddha, Suresh B" Cc: Arjan van de Ven Cc: Ashok Raj Cc: "David S. Miller" Cc: Christoph Lameter Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/dmar.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux/dmar.h') diff --git a/include/linux/dmar.h b/include/linux/dmar.h index 7d683dc8ed1..ffb6439cb5e 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -28,6 +28,18 @@ #ifdef CONFIG_DMAR struct intel_iommu; +extern char *dmar_get_fault_reason(u8 fault_reason); + +/* Can't use the common MSI interrupt functions + * since DMAR is not a pci device + */ +extern void dmar_msi_unmask(unsigned int irq); +extern void dmar_msi_mask(unsigned int irq); +extern void dmar_msi_read(int irq, struct msi_msg *msg); +extern void dmar_msi_write(int irq, struct msi_msg *msg); +extern int dmar_set_interrupt(struct intel_iommu *iommu); +extern int arch_setup_dmar_msi(unsigned int irq); + /* Intel IOMMU detection and initialization functions */ extern void detect_intel_iommu(void); extern int intel_iommu_init(void); -- cgit v1.2.3