Merge branch 'drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...

[karo-tx-linux.git] / drivers / pci / intel-iommu.c

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 712810598a2e3f0f98e6051b36f843fb7b6b7451..3dfecb20d5e7949953e7fefa2796af4b48bef88f 100644 (file)
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -205,7 +205,7 @@ static inline bool dma_pte_present(struct dma_pte *pte)
 }
 
 /* devices under the same p2p bridge are owned in one domain */
-#define DOMAIN_FLAG_P2P_MULTIPLE_DEVICES (1 < 0)
+#define DOMAIN_FLAG_P2P_MULTIPLE_DEVICES (1 << 0)
 
 /* domain represents a virtual machine, more than one devices
  * across iommus may be owned in one domain, e.g. kvm guest.
@@ -277,6 +277,8 @@ static int intel_iommu_strict;
 static DEFINE_SPINLOCK(device_domain_lock);
 static LIST_HEAD(device_domain_list);
 
+static struct iommu_ops intel_iommu_ops;
+
 static int __init intel_iommu_setup(char *str)
 {
        if (!str)
@@ -436,7 +438,8 @@ static struct intel_iommu *device_to_iommu(u8 bus, u8 devfn)
                        continue;
 
                for (i = 0; i < drhd->devices_cnt; i++)
-                       if (drhd->devices[i]->bus->number == bus &&
+                       if (drhd->devices[i] &&
+                           drhd->devices[i]->bus->number == bus &&
                            drhd->devices[i]->devfn == devfn)
                                return drhd->iommu;
 
@@ -2729,6 +2732,9 @@ int __init intel_iommu_init(void)
        init_timer(&unmap_timer);
        force_iommu = 1;
        dma_ops = &intel_dma_ops;
+
+       register_iommu(&intel_iommu_ops);
+
        return 0;
 }
 
@@ -3100,12 +3106,6 @@ static void intel_iommu_unmap_range(struct iommu_domain *domain,
                dmar_domain->max_addr = base;
 }
 
-int intel_iommu_found(void)
-{
-       return g_num_of_iommus;
-}
-EXPORT_SYMBOL_GPL(intel_iommu_found);
-
 static phys_addr_t intel_iommu_iova_to_phys(struct iommu_domain *domain,
                                            unsigned long iova)
 {
@@ -3119,3 +3119,13 @@ static phys_addr_t intel_iommu_iova_to_phys(struct iommu_domain *domain,
 
        return phys;
 }
+
+static struct iommu_ops intel_iommu_ops = {
+       .domain_init    = intel_iommu_domain_init,
+       .domain_destroy = intel_iommu_domain_destroy,
+       .attach_dev     = intel_iommu_attach_device,
+       .detach_dev     = intel_iommu_detach_device,
+       .map            = intel_iommu_map_range,
+       .unmap          = intel_iommu_unmap_range,
+       .iova_to_phys   = intel_iommu_iova_to_phys,
+};