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Diffstat (limited to 'drivers/iommu/intel-iommu.c')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index f168cd8ee570..10ee8fa4b1b8 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4762,6 +4762,26 @@ static void intel_disable_iommus(void) iommu_disable_translation(iommu); } +void intel_iommu_shutdown(void) +{ + struct dmar_drhd_unit *drhd; + struct intel_iommu *iommu = NULL; + + if (no_iommu || dmar_disabled) + return; + + down_write(&dmar_global_lock); + + /* Disable PMRs explicitly here. */ + for_each_iommu(iommu, drhd) + iommu_disable_protect_mem_regions(iommu); + + /* Make sure the IOMMUs are switched off */ + intel_disable_iommus(); + + up_write(&dmar_global_lock); +} + static inline struct intel_iommu *dev_to_intel_iommu(struct device *dev) { struct iommu_device *iommu_dev = dev_to_iommu_device(dev); |