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authorRobin Murphy <robin.murphy@arm.com>2015-12-07 21:18:53 +0300
committerWill Deacon <will.deacon@arm.com>2015-12-17 15:05:34 +0300
commit06c610e8f32ba2fe41d57e1718611c2ec5024878 (patch)
tree1255fe5238bac58717ff0bbf56beb48625153021 /drivers/iommu/ipmmu-vmsa.c
parent2eb97c78613082f308c0b39366c034cb589b8ee9 (diff)
downloadlinux-06c610e8f32ba2fe41d57e1718611c2ec5024878.tar.xz
iommu/io-pgtable: Indicate granule for TLB maintenance
IOMMU hardware with range-based TLB maintenance commands can work happily with the iova and size arguments passed via the tlb_add_flush callback, but for IOMMUs which require separate commands per entry in the range, it is not straightforward to infer the necessary granularity when it comes to issuing the actual commands. Add an additional argument indicating the granularity for the benefit of drivers needing to know, and update the ARM LPAE code appropriately (for non-leaf invalidations we currently just assume the worst-case page granularity rather than walking the table to check). Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/iommu/ipmmu-vmsa.c')
-rw-r--r--drivers/iommu/ipmmu-vmsa.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index 8cf605fa9946..5b1166d407c4 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -277,8 +277,8 @@ static void ipmmu_tlb_flush_all(void *cookie)
ipmmu_tlb_invalidate(domain);
}
-static void ipmmu_tlb_add_flush(unsigned long iova, size_t size, bool leaf,
- void *cookie)
+static void ipmmu_tlb_add_flush(unsigned long iova, size_t size,
+ size_t granule, bool leaf, void *cookie)
{
/* The hardware doesn't support selective TLB flush. */
}