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>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 432acc4c054d..d5ebf3f4dd53 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -54,9 +54,9 @@ struct iommu_ops {
         int (*attach_dev)(struct iommu_domain *domain, struct device *dev);
         void (*detach_dev)(struct iommu_domain *domain, struct device *dev);
         int (*map)(struct iommu_domain *domain, unsigned long iova,
-                   phys_addr_t paddr, int gfp_order, int prot);
-        int (*unmap)(struct iommu_domain *domain, unsigned long iova,
-                     int gfp_order);
+                   phys_addr_t paddr, size_t size, int prot);
+        size_t (*unmap)(struct iommu_domain *domain, unsigned long iova,
+                     size_t size);
         phys_addr_t (*iova_to_phys)(struct iommu_domain *domain,
                                     unsigned long iova);
         int (*domain_has_cap)(struct iommu_domain *domain,