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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>
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;