Merge branch 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/l…

…inux/kernel/git/tip/linux-2.6-tip * 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86/amd-iommu: Export cache-coherency capability iommu-api: Extension to check for interrupt remapping x86/amd-iommu: Use for_each_pci_dev()
git-mirror · Aug 6, 2010 · cc77b4d · cc77b4d
2 parents 132a4ed + 7a42c4f
commit cc77b4d
Show file tree

Hide file tree

Showing 3 changed files with 9 additions and 2 deletions.
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
@@ -2572,6 +2572,11 @@ static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom,
 static int amd_iommu_domain_has_cap(struct iommu_domain *domain,
 				    unsigned long cap)
 {
+	switch (cap) {
+	case IOMMU_CAP_CACHE_COHERENCY:
+		return 1;
+	}
+
 	return 0;
 }
 
@@ -2609,8 +2614,7 @@ int __init amd_iommu_init_passthrough(void)
 
 	pt_domain->mode |= PAGE_MODE_NONE;
 
-	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
-
+	for_each_pci_dev(dev) {
 		if (!check_device(&dev->dev))
 			continue;
 

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
@@ -3698,6 +3698,8 @@ static int intel_iommu_domain_has_cap(struct iommu_domain *domain,
 
 	if (cap == IOMMU_CAP_CACHE_COHERENCY)
 		return dmar_domain->iommu_snooping;
+	if (cap == IOMMU_CAP_INTR_REMAP)
+		return intr_remapping_enabled;
 
 	return 0;
 }

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
@@ -30,6 +30,7 @@ struct iommu_domain {
 };
 
 #define IOMMU_CAP_CACHE_COHERENCY	0x1
+#define IOMMU_CAP_INTR_REMAP		0x2	/* isolates device intrs */
 
 struct iommu_ops {
 	int (*domain_init)(struct iommu_domain *domain);