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authorJoerg Roedel <joerg.roedel@amd.com>2009-11-26 15:04:38 +0100
committerJoerg Roedel <joerg.roedel@amd.com>2009-11-27 14:20:35 +0100
commit3fa43655d81d471d47c44b0db4e2be1f8af32207 (patch)
tree2cf0d1bffbb3a84262fa6f528a4611bf096b122c /arch
parent7f760ddd702d162d693bc79f62c3bdd7fe55bd9d (diff)
x86/amd-iommu: Introduce iommu_flush_device() function
This patch adds a function to flush a DTE entry for a given struct device and replaces iommu_queue_inv_dev_entry calls with this function where appropriate. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/amd_iommu.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index e3363fd5eef..41c4ebecced 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -494,6 +494,17 @@ static int iommu_queue_inv_dev_entry(struct amd_iommu *iommu, u16 devid)
return ret;
}
+static int iommu_flush_device(struct device *dev)
+{
+ struct amd_iommu *iommu;
+ u16 devid;
+
+ devid = get_device_id(dev);
+ iommu = amd_iommu_rlookup_table[devid];
+
+ return iommu_queue_inv_dev_entry(iommu, devid);
+}
+
static void __iommu_build_inv_iommu_pages(struct iommu_cmd *cmd, u64 address,
u16 domid, int pde, int s)
{
@@ -1382,7 +1393,7 @@ static void do_attach(struct device *dev, struct protection_domain *domain)
domain->dev_cnt += 1;
/* Flush the DTE entry */
- iommu_queue_inv_dev_entry(iommu, devid);
+ iommu_flush_device(dev);
}
static void do_detach(struct device *dev)
@@ -1405,7 +1416,7 @@ static void do_detach(struct device *dev)
clear_dte_entry(devid);
/* Flush the DTE entry */
- iommu_queue_inv_dev_entry(iommu, devid);
+ iommu_flush_device(dev);
}
/*
@@ -1610,7 +1621,7 @@ static int device_change_notifier(struct notifier_block *nb,
goto out;
}
- iommu_queue_inv_dev_entry(iommu, devid);
+ iommu_flush_device(dev);
iommu_completion_wait(iommu);
out:
@@ -2393,7 +2404,7 @@ static void amd_iommu_detach_device(struct iommu_domain *dom,
if (!iommu)
return;
- iommu_queue_inv_dev_entry(iommu, devid);
+ iommu_flush_device(dev);
iommu_completion_wait(iommu);
}