Merge branch 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/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: Add amd_iommu=off command line option
  iommu-api: Remove iommu_{un}map_range functions
  x86/amd-iommu: Implement ->{un}map callbacks for iommu-api
  x86/amd-iommu: Make amd_iommu_iova_to_phys aware of multiple page sizes
  x86/amd-iommu: Make iommu_unmap_page and fetch_pte aware of page sizes
  x86/amd-iommu: Make iommu_map_page and alloc_pte aware of page sizes
  kvm: Change kvm_iommu_map_pages to map large pages
  VT-d: Change {un}map_range functions to implement {un}map interface
  iommu-api: Add ->{un}map callbacks to iommu_ops
  iommu-api: Add iommu_map and iommu_unmap functions
  iommu-api: Rename ->{un}map function pointers to ->{un}map_range

2 files changed, 41 insertions, 24 deletions

diff --git a/drivers/base/iommu.c b/drivers/base/iommu.c
index 8ad4ffea6920..6e6b6a11b3ce 100644
--- a/drivers/base/iommu.c
+++ b/drivers/base/iommu.c
@@ -80,20 +80,6 @@ void iommu_detach_device(struct iommu_domain *domain, struct device *dev)
 }
 EXPORT_SYMBOL_GPL(iommu_detach_device);
 
-int iommu_map_range(struct iommu_domain *domain, unsigned long iova,
-                    phys_addr_t paddr, size_t size, int prot)
-{
-        return iommu_ops->map(domain, iova, paddr, size, prot);
-}
-EXPORT_SYMBOL_GPL(iommu_map_range);
-
-void iommu_unmap_range(struct iommu_domain *domain, unsigned long iova,
-                      size_t size)
-{
-        iommu_ops->unmap(domain, iova, size);
-}
-EXPORT_SYMBOL_GPL(iommu_unmap_range);
-
 phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain,
                                unsigned long iova)
 {
@@ -107,3 +93,32 @@ int iommu_domain_has_cap(struct iommu_domain *domain,
         return iommu_ops->domain_has_cap(domain, cap);
 }
 EXPORT_SYMBOL_GPL(iommu_domain_has_cap);
+
+int iommu_map(struct iommu_domain *domain, unsigned long iova,
+              phys_addr_t paddr, int gfp_order, int prot)
+{
+        unsigned long invalid_mask;
+        size_t size;
+
+        size         = 0x1000UL << gfp_order;
+        invalid_mask = size - 1;
+
+        BUG_ON((iova | paddr) & invalid_mask);
+
+        return iommu_ops->map(domain, iova, paddr, gfp_order, prot);
+}
+EXPORT_SYMBOL_GPL(iommu_map);
+
+int iommu_unmap(struct iommu_domain *domain, unsigned long iova, int gfp_order)
+{
+        unsigned long invalid_mask;
+        size_t size;
+
+        size         = 0x1000UL << gfp_order;
+        invalid_mask = size - 1;
+
+        BUG_ON(iova & invalid_mask);
+
+        return iommu_ops->unmap(domain, iova, gfp_order);
+}
+EXPORT_SYMBOL_GPL(iommu_unmap);
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 417312528ddf..371dc564e2e4 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -3626,14 +3626,15 @@ static void intel_iommu_detach_device(struct iommu_domain *domain,
         domain_remove_one_dev_info(dmar_domain, pdev);
 }
 
-static int intel_iommu_map_range(struct iommu_domain *domain,
-                                 unsigned long iova, phys_addr_t hpa,
-                                 size_t size, int iommu_prot)
+static int intel_iommu_map(struct iommu_domain *domain,
+                           unsigned long iova, phys_addr_t hpa,
+                           int gfp_order, int iommu_prot)
 {
         struct dmar_domain *dmar_domain = domain->priv;
         u64 max_addr;
         int addr_width;
         int prot = 0;
+        size_t size;
         int ret;
 
         if (iommu_prot & IOMMU_READ)
@@ -3643,6 +3644,7 @@ static int intel_iommu_map_range(struct iommu_domain *domain,
         if ((iommu_prot & IOMMU_CACHE) && dmar_domain->iommu_snooping)
                 prot |= DMA_PTE_SNP;
 
+        size     = PAGE_SIZE << gfp_order;
         max_addr = iova + size;
         if (dmar_domain->max_addr < max_addr) {
                 int min_agaw;
@@ -3669,19 +3671,19 @@ static int intel_iommu_map_range(struct iommu_domain *domain,
         return ret;
 }
 
-static void intel_iommu_unmap_range(struct iommu_domain *domain,
-                                    unsigned long iova, size_t size)
+static int intel_iommu_unmap(struct iommu_domain *domain,
+                             unsigned long iova, int gfp_order)
 {
         struct dmar_domain *dmar_domain = domain->priv;
-
-        if (!size)
-                return;
+        size_t size = PAGE_SIZE << gfp_order;
 
         dma_pte_clear_range(dmar_domain, iova >> VTD_PAGE_SHIFT,
                             (iova + size - 1) >> VTD_PAGE_SHIFT);
 
         if (dmar_domain->max_addr == iova + size)
                 dmar_domain->max_addr = iova;
+
+        return gfp_order;
 }
 
 static phys_addr_t intel_iommu_iova_to_phys(struct iommu_domain *domain,
@@ -3714,8 +3716,8 @@ static struct iommu_ops intel_iommu_ops = {
         .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,
+        .map            = intel_iommu_map,
+        .unmap          = intel_iommu_unmap,
         .iova_to_phys   = intel_iommu_iova_to_phys,
         .domain_has_cap = intel_iommu_domain_has_cap,
 };