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| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-11-26 17:04:38 +0300 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-11-27 16:20:35 +0300 |
| commit | 3fa43655d81d471d47c44b0db4e2be1f8af32207 (patch) | |
| tree | 2cf0d1bffbb3a84262fa6f528a4611bf096b122c /arch/x86/kernel/amd_iommu.c | |
| parent | 7f760ddd702d162d693bc79f62c3bdd7fe55bd9d (diff) | |
| download | linux-3fa43655d81d471d47c44b0db4e2be1f8af32207.tar.xz | |
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/x86/kernel/amd_iommu.c')
| -rw-r--r-- | arch/x86/kernel/amd_iommu.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index e3363fd5eef5..41c4ebecced4 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); } |