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authorJoerg Roedel <joerg.roedel@amd.com>2009-05-05 15:48:10 +0200
committerJoerg Roedel <joerg.roedel@amd.com>2009-05-28 18:10:43 +0200
commit7d7a110c6127b7fc683dc6d764555f2dbd22b054 (patch)
treee507db8006ad708189a2dbccc65c595f3ecda504 /arch/x86/kernel
parentbfd1be1857e5a3385bf146e02e6dc3dd4241bec1 (diff)
amd-iommu: add function to flush tlb for all devices
This function is required for suspend/resume support with AMD IOMMU enabled. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r--arch/x86/kernel/amd_iommu.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 826ad079efc..92b0e1881e0 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -460,6 +460,24 @@ void amd_iommu_flush_all_domains(void)
}
}
+void amd_iommu_flush_all_devices(void)
+{
+ struct amd_iommu *iommu;
+ int i;
+
+ for (i = 0; i <= amd_iommu_last_bdf; ++i) {
+ if (amd_iommu_pd_table[i] == NULL)
+ continue;
+
+ iommu = amd_iommu_rlookup_table[i];
+ if (!iommu)
+ continue;
+
+ iommu_queue_inv_dev_entry(iommu, i);
+ iommu_completion_wait(iommu);
+ }
+}
+
/****************************************************************************
*
* The functions below are used the create the page table mappings for