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authorOhad Ben-Cohen <ohad@wizery.com>2011-11-10 11:32:25 +0200
committerJoerg Roedel <joerg.roedel@amd.com>2011-11-10 11:40:37 +0100
commit5009065d38c95455bd2d27c2838313e3dd0c5bc7 (patch)
treea957af07e95166bcc014b3f333234fe74cef790e /drivers/iommu/iommu.c
parent1ea6b8f48918282bdca0b32a34095504ee65bab5 (diff)
iommu/core: stop converting bytes to page order back and forth
Express sizes in bytes rather than in page order, to eliminate the size->order->size conversions we have whenever the IOMMU API is calling the low level drivers' map/unmap methods. Adopt all existing drivers. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Cc: David Brown <davidb@codeaurora.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Joerg Roedel <Joerg.Roedel@amd.com> Cc: Stepan Moskovchenko <stepanm@codeaurora.org> Cc: KyongHo Cho <pullip.cho@samsung.com> Cc: Hiroshi DOYU <hdoyu@nvidia.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu/iommu.c')
-rw-r--r--drivers/iommu/iommu.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 2fb2963df553..7a2953d8f12e 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -168,13 +168,13 @@ int iommu_map(struct iommu_domain *domain, unsigned long iova,
BUG_ON(!IS_ALIGNED(iova | paddr, size));
- return domain->ops->map(domain, iova, paddr, gfp_order, prot);
+ return domain->ops->map(domain, iova, paddr, size, prot);
}
EXPORT_SYMBOL_GPL(iommu_map);
int iommu_unmap(struct iommu_domain *domain, unsigned long iova, int gfp_order)
{
- size_t size;
+ size_t size, unmapped;
if (unlikely(domain->ops->unmap == NULL))
return -ENODEV;
@@ -183,6 +183,8 @@ int iommu_unmap(struct iommu_domain *domain, unsigned long iova, int gfp_order)
BUG_ON(!IS_ALIGNED(iova, size));
- return domain->ops->unmap(domain, iova, gfp_order);
+ unmapped = domain->ops->unmap(domain, iova, size);
+
+ return get_order(unmapped);
}
EXPORT_SYMBOL_GPL(iommu_unmap);