X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fpci%2Fintel-iommu.c;h=8d6159426311bda6a5bcab491b282e5427d6eff2;hb=11bd04f6f35621193311c32e0721142b073a7794;hp=43d755a2e14aa8908a22a3ff54c046b86794c4ff;hpb=75f1cdf1dda92cae037ec848ae63690d91913eac;p=safe%2Fjmp%2Flinux-2.6

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 43d755a..8d61594 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -1611,7 +1611,7 @@ domain_context_mapping(struct dmar_domain *domain, struct pci_dev *pdev,
 			return ret;
 		parent = parent->bus->self;
 	}
-	if (tmp->is_pcie) /* this is a PCIE-to-PCI bridge */
+	if (pci_is_pcie(tmp)) /* this is a PCIE-to-PCI bridge */
 		return domain_context_mapping_one(domain,
 					pci_domain_nr(tmp->subordinate),
 					tmp->subordinate->number, 0,
@@ -1651,7 +1651,7 @@ static int domain_context_mapped(struct pci_dev *pdev)
 			return ret;
 		parent = parent->bus->self;
 	}
-	if (tmp->is_pcie)
+	if (pci_is_pcie(tmp))
 		return device_context_mapped(iommu, tmp->subordinate->number,
 					     0);
 	else
@@ -1821,7 +1821,7 @@ static struct dmar_domain *get_domain_for_dev(struct pci_dev *pdev, int gaw)
 
 	dev_tmp = pci_find_upstream_pcie_bridge(pdev);
 	if (dev_tmp) {
-		if (dev_tmp->is_pcie) {
+		if (pci_is_pcie(dev_tmp)) {
 			bus = dev_tmp->subordinate->number;
 			devfn = 0;
 		} else {
@@ -2182,7 +2182,7 @@ static int iommu_should_identity_map(struct pci_dev *pdev, int startup)
 	 * the 1:1 domain, just in _case_ one of their siblings turns out
 	 * not to be able to map all of memory.
 	 */
-	if (!pdev->is_pcie) {
+	if (!pci_is_pcie(pdev)) {
 		if (!pci_is_root_bus(pdev->bus))
 			return 0;
 		if (pdev->class >> 8 == PCI_CLASS_BRIDGE_PCI)
@@ -2767,7 +2767,15 @@ static void *intel_alloc_coherent(struct device *hwdev, size_t size,
 
 	size = PAGE_ALIGN(size);
 	order = get_order(size);
-	flags &= ~(GFP_DMA | GFP_DMA32);
+
+	if (!iommu_no_mapping(hwdev))
+		flags &= ~(GFP_DMA | GFP_DMA32);
+	else if (hwdev->coherent_dma_mask < dma_get_required_mask(hwdev)) {
+		if (hwdev->coherent_dma_mask < DMA_BIT_MASK(32))
+			flags |= GFP_DMA;
+		else
+			flags |= GFP_DMA32;
+	}
 
 	vaddr = (void *)__get_free_pages(flags, order);
 	if (!vaddr)
@@ -3207,6 +3215,33 @@ static int __init init_iommu_sysfs(void)
 }
 #endif	/* CONFIG_PM */
 
+/*
+ * Here we only respond to action of unbound device from driver.
+ *
+ * Added device is not attached to its DMAR domain here yet. That will happen
+ * when mapping the device to iova.
+ */
+static int device_notifier(struct notifier_block *nb,
+				  unsigned long action, void *data)
+{
+	struct device *dev = data;
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct dmar_domain *domain;
+
+	domain = find_domain(pdev);
+	if (!domain)
+		return 0;
+
+	if (action == BUS_NOTIFY_UNBOUND_DRIVER && !iommu_pass_through)
+		domain_remove_one_dev_info(domain, pdev);
+
+	return 0;
+}
+
+static struct notifier_block device_nb = {
+	.notifier_call = device_notifier,
+};
+
 int __init intel_iommu_init(void)
 {
 	int ret = 0;
@@ -3261,6 +3296,8 @@ int __init intel_iommu_init(void)
 
 	register_iommu(&intel_iommu_ops);
 
+	bus_register_notifier(&pci_bus_type, &device_nb);
+
 	return 0;
 }
 
@@ -3282,7 +3319,7 @@ static void iommu_detach_dependent_devices(struct intel_iommu *iommu,
 					 parent->devfn);
 			parent = parent->bus->self;
 		}
-		if (tmp->is_pcie) /* this is a PCIE-to-PCI bridge */
+		if (pci_is_pcie(tmp)) /* this is a PCIE-to-PCI bridge */
 			iommu_detach_dev(iommu,
 				tmp->subordinate->number, 0);
 		else /* this is a legacy PCI bridge */