intel-iommu: Make iommu_flush_iotlb_psi() take pfn as argument

Most of its callers are having to shift for themselves anyway, so we might
as well do it in iommu_flush_iotlb_psi().

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 9 insertions, 12 deletions

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 22add36fd731..6afe44cb6815 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -1058,11 +1058,11 @@ static void iommu_flush_dev_iotlb(struct dmar_domain *domain,
 }
 
 static void iommu_flush_iotlb_psi(struct intel_iommu *iommu, u16 did,
-                                  u64 addr, unsigned int pages)
+                                  unsigned long pfn, unsigned int pages)
 {
         unsigned int mask = ilog2(__roundup_pow_of_two(pages));
+        uint64_t addr = (uint64_t)pfn << VTD_PAGE_SHIFT;
 
-        BUG_ON(addr & (~VTD_PAGE_MASK));
         BUG_ON(pages == 0);
 
         /*
@@ -2494,15 +2494,15 @@ static dma_addr_t __intel_map_single(struct device *hwdev, phys_addr_t paddr,
         if (ret)
                 goto error;
 
-        start_paddr = (phys_addr_t)iova->pfn_lo << PAGE_SHIFT;
-
         /* it's a non-present to present mapping. Only flush if caching mode */
         if (cap_caching_mode(iommu->cap))
-                iommu_flush_iotlb_psi(iommu, 0, start_paddr, size);
+                iommu_flush_iotlb_psi(iommu, 0, mm_to_dma_pfn(iova->pfn_lo), size);
         else
                 iommu_flush_write_buffer(iommu);
 
-        return start_paddr + (paddr & (~PAGE_MASK));
+        start_paddr = (phys_addr_t)iova->pfn_lo << PAGE_SHIFT;
+        start_paddr += paddr & ~PAGE_MASK;
+        return start_paddr;
 
 error:
         if (iova)
@@ -2624,8 +2624,7 @@ static void intel_unmap_page(struct device *dev, dma_addr_t dev_addr,
         dma_pte_free_pagetable(domain, start_pfn, last_pfn);
 
         if (intel_iommu_strict) {
-                iommu_flush_iotlb_psi(iommu, domain->id,
-                                      start_pfn << VTD_PAGE_SHIFT,
+                iommu_flush_iotlb_psi(iommu, domain->id, start_pfn,
                                       last_pfn - start_pfn + 1);
                 /* free iova */
                 __free_iova(&domain->iovad, iova);
@@ -2711,8 +2710,7 @@ static void intel_unmap_sg(struct device *hwdev, struct scatterlist *sglist,
         /* free page tables */
         dma_pte_free_pagetable(domain, start_pfn, last_pfn);
 
-        iommu_flush_iotlb_psi(iommu, domain->id,
-                              start_pfn << VTD_PAGE_SHIFT,
+        iommu_flush_iotlb_psi(iommu, domain->id, start_pfn,
                               (last_pfn - start_pfn + 1));
 
         /* free iova */
@@ -2804,8 +2802,7 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist, int ne
 
         /* it's a non-present to present mapping. Only flush if caching mode */
         if (cap_caching_mode(iommu->cap))
-                iommu_flush_iotlb_psi(iommu, 0, start_vpfn << VTD_PAGE_SHIFT,
-                                      offset_pfn);
+                iommu_flush_iotlb_psi(iommu, 0, start_vpfn, offset_pfn);
         else
                 iommu_flush_write_buffer(iommu);