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authorJoerg Roedel <joerg.roedel@amd.com>2009-09-03 15:39:23 +0200
committerJoerg Roedel <joerg.roedel@amd.com>2009-09-03 15:55:23 +0200
commitd586d7852ccd0cecb502bf4809f827e60c486af0 (patch)
tree42d01aaa0acfa6a9e73ba99db5c032653aed7a8b
parente394d72aa8b319211b8f947d151d9d50b0fde842 (diff)
x86/amd-iommu: Add function to flush all DTEs on one IOMMU
This function flushes all DTE entries on one IOMMU for all devices behind this IOMMU. This is required for command buffer resetting later. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
-rw-r--r--arch/x86/kernel/amd_iommu.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 64cc582feb9..2dc093370d2 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -516,6 +516,19 @@ void amd_iommu_flush_all_domains(void)
flush_all_domains_on_iommu(iommu);
}
+static void flush_all_devices_for_iommu(struct amd_iommu *iommu)
+{
+ int i;
+
+ for (i = 0; i <= amd_iommu_last_bdf; ++i) {
+ if (iommu != amd_iommu_rlookup_table[i])
+ continue;
+
+ iommu_queue_inv_dev_entry(iommu, i);
+ iommu_completion_wait(iommu);
+ }
+}
+
void amd_iommu_flush_all_devices(void)
{
struct amd_iommu *iommu;