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| author | Joerg Roedel <joerg.roedel@amd.com> | 2010-01-21 16:32:27 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2010-03-07 18:01:11 +0100 |
| commit | 67651786948c360c3122b8a17cb1e59209d50880 (patch) | |
| tree | 533a24ba14a513a99c19af4507dde499aaf1d9c5 | |
| parent | cefc53c7f494240d4813c80154c7617452d1904d (diff) | |
| download | kernel_samsung_tuna-67651786948c360c3122b8a17cb1e59209d50880.zip kernel_samsung_tuna-67651786948c360c3122b8a17cb1e59209d50880.tar.gz kernel_samsung_tuna-67651786948c360c3122b8a17cb1e59209d50880.tar.bz2 | |
iommu-api: Add ->{un}map callbacks to iommu_ops
This patch adds new callbacks for mapping and unmapping
pages to the iommu_ops structure. These callbacks are aware
of page sizes which makes them different to the
->{un}map_range callbacks.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| -rw-r--r-- | drivers/base/iommu.c | 6 | ||||
| -rw-r--r-- | include/linux/iommu.h | 4 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/base/iommu.c b/drivers/base/iommu.c index cf7cbec..55d37e4 100644 --- a/drivers/base/iommu.c +++ b/drivers/base/iommu.c @@ -119,6 +119,9 @@ int iommu_map(struct iommu_domain *domain, unsigned long iova, BUG_ON((iova | paddr) & invalid_mask); + if (iommu_ops->map) + return iommu_ops->map(domain, iova, paddr, gfp_order, prot); + return iommu_ops->map_range(domain, iova, paddr, size, prot); } EXPORT_SYMBOL_GPL(iommu_map); @@ -133,6 +136,9 @@ int iommu_unmap(struct iommu_domain *domain, unsigned long iova, int gfp_order) BUG_ON(iova & invalid_mask); + if (iommu_ops->unmap) + return iommu_ops->unmap(domain, iova, gfp_order); + iommu_ops->unmap_range(domain, iova, size); return gfp_order; diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 6d0035b..5a7a3d8 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -36,6 +36,10 @@ struct iommu_ops { void (*domain_destroy)(struct iommu_domain *domain); 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); int (*map_range)(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t size, int prot); void (*unmap_range)(struct iommu_domain *domain, unsigned long iova, |