Commit-ID: d586d7852ccd0cecb502bf4809f827e60c486af0
Gitweb: http://git.kernel.org/tip/d586d7852ccd0cecb502bf4809f827e60c486af0
Author: Joerg Roedel <joerg.roedel@xxxxxxx>
AuthorDate: Thu, 3 Sep 2009 15:39:23 +0200
Committer: Joerg Roedel <joerg.roedel@xxxxxxx>
CommitDate: Thu, 3 Sep 2009 15:55:23 +0200
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@xxxxxxx>
---
arch/x86/kernel/amd_iommu.c | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 64cc582..2dc0933 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;
--
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