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| author | Joerg Roedel <joro@8bytes.org> | 2013-01-29 13:26:20 (GMT) |
|---|---|---|
| committer | Emil Medve <Emilian.Medve@Freescale.com> | 2013-03-21 18:42:01 (GMT) |
| commit | f2197448167ee53ccb75d49aa25f4665feee27ca (patch) | |
| tree | 86fbd5f28a2689b3c83c13740a6386b6cb135d2b /drivers/iommu | |
| parent | d7b107f727c6b87bd09b17f2d1b9cb0f6efbb8c6 (diff) | |
| download | linux-fsl-qoriq-f2197448167ee53ccb75d49aa25f4665feee27ca.tar.xz | |
iommu: Add domain window handling functions
Add the iommu_domain_window_enable() and iommu_domain_window_disable()
functions to the IOMMU-API. These functions will be used to setup
domains that are based on subwindows and not on paging.
Signed-off-by: Joerg Roedel <joro@8bytes.org>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/iommu.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 0e0e5f2..b3aced7 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -852,6 +852,26 @@ size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova, size_t size) } EXPORT_SYMBOL_GPL(iommu_unmap); + +int iommu_domain_window_enable(struct iommu_domain *domain, u32 wnd_nr, + phys_addr_t paddr, u64 size) +{ + if (unlikely(domain->ops->domain_window_enable == NULL)) + return -ENODEV; + + return domain->ops->domain_window_enable(domain, wnd_nr, paddr, size); +} +EXPORT_SYMBOL_GPL(iommu_domain_window_enable); + +void iommu_domain_window_disable(struct iommu_domain *domain, u32 wnd_nr) +{ + if (unlikely(domain->ops->domain_window_disable == NULL)) + return; + + return domain->ops->domain_window_disable(domain, wnd_nr); +} +EXPORT_SYMBOL_GPL(iommu_domain_window_disable); + static int __init iommu_init(void) { iommu_group_kset = kset_create_and_add("iommu_groups", |