From d7787d579cbef9f8079104759a2259fc916c688c Mon Sep 17 00:00:00 2001
From: Joerg Roedel <joro@8bytes.org>
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 <joro@8bytes.org>
---
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",
--
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