iommu: Only map direct mapped regions

As we introduced new reserved region types which do not require
mapping, let's make sure we only map direct mapped regions.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Tomasz Nowicki <tomasz.nowicki@caviumnetworks.com>
Tested-by: Tomasz Nowicki <tomasz.nowicki@caviumnetworks.com>
Tested-by: Bharat Bhushan <bharat.bhushan@nxp.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 927878d0a612c934be3e960e91b5706ca3eb8f63..41c190695749dd604a9a3f32f757d17cf73b829d 100644 (file)
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -343,6 +343,9 @@ static int iommu_group_create_direct_mappings(struct iommu_group *group,
                start = ALIGN(entry->start, pg_size);
                end   = ALIGN(entry->start + entry->length, pg_size);
 
+               if (entry->type != IOMMU_RESV_DIRECT)
+                       continue;
+
                for (addr = start; addr < end; addr += pg_size) {
                        phys_addr_t phys_addr;