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x86/amd-iommu: Add function to flush all DTEs on one IOMMU

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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>
This commit is contained in:
Joerg Roedel 2009-09-03 15:39:23 +02:00
parent e394d72aa8
commit d586d7852c
1 changed files with 13 additions and 0 deletions
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13
arch/x86/kernel/amd_iommu.c
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@ -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;