From d7787d579cbef9f8079104759a2259fc916c688c Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 29 Jan 2013 14:26:20 +0100 Subject: 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 --- drivers/iommu/iommu.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers/iommu') diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 0e0e5f2e0ccc..b3aced7356cc 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", -- cgit v1.2.3