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| author | Ohad Ben-Cohen <ohad@wizery.com> | 2011-11-10 11:32:25 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2011-11-10 11:40:37 +0100 |
| commit | 5009065d38c95455bd2d27c2838313e3dd0c5bc7 (patch) | |
| tree | a957af07e95166bcc014b3f333234fe74cef790e /drivers/iommu/omap-iommu.c | |
| parent | 1ea6b8f48918282bdca0b32a34095504ee65bab5 (diff) | |
| download | linux-5009065d38c95455bd2d27c2838313e3dd0c5bc7.tar.gz linux-5009065d38c95455bd2d27c2838313e3dd0c5bc7.tar.xz linux-5009065d38c95455bd2d27c2838313e3dd0c5bc7.zip | |
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/omap-iommu.c')
| -rw-r--r-- | drivers/iommu/omap-iommu.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index 8f32b2bf7587..ad80b1d0d099 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -1019,12 +1019,11 @@ static void iopte_cachep_ctor(void *iopte) } static int omap_iommu_map(struct iommu_domain *domain, unsigned long da, - phys_addr_t pa, int order, int prot) + phys_addr_t pa, size_t bytes, int prot) { struct omap_iommu_domain *omap_domain = domain->priv; struct omap_iommu *oiommu = omap_domain->iommu_dev; struct device *dev = oiommu->dev; - size_t bytes = PAGE_SIZE << order; struct iotlb_entry e; int omap_pgsz; u32 ret, flags; @@ -1049,19 +1048,16 @@ static int omap_iommu_map(struct iommu_domain *domain, unsigned long da, return ret; } -static int omap_iommu_unmap(struct iommu_domain *domain, unsigned long da, - int order) +static size_t omap_iommu_unmap(struct iommu_domain *domain, unsigned long da, + size_t size) { struct omap_iommu_domain *omap_domain = domain->priv; struct omap_iommu *oiommu = omap_domain->iommu_dev; struct device *dev = oiommu->dev; - size_t unmap_size; - dev_dbg(dev, "unmapping da 0x%lx order %d\n", da, order); + dev_dbg(dev, "unmapping da 0x%lx size %u\n", da, size); - unmap_size = iopgtable_clear_entry(oiommu, da); - - return unmap_size ? get_order(unmap_size) : -EINVAL; + return iopgtable_clear_entry(oiommu, da); } static int |