From 5009065d38c95455bd2d27c2838313e3dd0c5bc7 Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Thu, 10 Nov 2011 11:32:25 +0200 Subject: 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 Cc: David Brown Cc: David Woodhouse Cc: Joerg Roedel Cc: Stepan Moskovchenko Cc: KyongHo Cho Cc: Hiroshi DOYU Cc: Laurent Pinchart Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) (limited to 'drivers/iommu/amd_iommu.c') diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 4ee277a8521a..a3b7072e86e2 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2702,9 +2702,8 @@ static int amd_iommu_attach_device(struct iommu_domain *dom, } static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova, - phys_addr_t paddr, int gfp_order, int iommu_prot) + phys_addr_t paddr, size_t page_size, int iommu_prot) { - unsigned long page_size = 0x1000UL << gfp_order; struct protection_domain *domain = dom->priv; int prot = 0; int ret; @@ -2721,13 +2720,11 @@ static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova, return ret; } -static int amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova, - int gfp_order) +static size_t amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova, + size_t page_size) { struct protection_domain *domain = dom->priv; - unsigned long page_size, unmap_size; - - page_size = 0x1000UL << gfp_order; + size_t unmap_size; mutex_lock(&domain->api_lock); unmap_size = iommu_unmap_page(domain, iova, page_size); @@ -2735,7 +2732,7 @@ static int amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova, domain_flush_tlb_pde(domain); - return get_order(unmap_size); + return unmap_size; } static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom, -- cgit v1.2.3