VT-d: Change {un}map_range functions to implement {un}map interface

This patch changes the iommu-api functions for mapping and
unmapping page ranges to use the new page-size based
interface. This allows to remove the range based functions
later.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

1 files changed, 12 insertions, 10 deletions

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index a714e3db13c1..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_range      = intel_iommu_map_range,
-        .unmap_range    = 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,
 };