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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>
hifive-unleashed-5.1
Joerg Roedel 2010-01-21 16:32:27 +01:00
parent cefc53c7f4
commit 6765178694
2 changed files with 10 additions and 0 deletions
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6
drivers/base/iommu.c
View File

@ -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;

4
include/linux/iommu.h
View File

@ -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,