diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iommu/intel/pasid.c | 10 | ||||
| -rw-r--r-- | drivers/iommu/intel/pasid.h | 6 |
2 files changed, 14 insertions, 2 deletions
diff --git a/drivers/iommu/intel/pasid.c b/drivers/iommu/intel/pasid.c index c6cf44a6c923..9ec374e17469 100644 --- a/drivers/iommu/intel/pasid.c +++ b/drivers/iommu/intel/pasid.c @@ -511,7 +511,7 @@ void intel_pasid_tear_down_entry(struct intel_iommu *iommu, struct device *dev, u32 pasid, bool fault_ignore) { struct pasid_entry *pte; - u16 did; + u16 did, pgtt; pte = intel_pasid_get_entry(dev, pasid); if (WARN_ON(!pte)) @@ -521,13 +521,19 @@ void intel_pasid_tear_down_entry(struct intel_iommu *iommu, struct device *dev, return; did = pasid_get_domain_id(pte); + pgtt = pasid_pte_get_pgtt(pte); + intel_pasid_clear_entry(dev, pasid, fault_ignore); if (!ecap_coherent(iommu->ecap)) clflush_cache_range(pte, sizeof(*pte)); pasid_cache_invalidation_with_pasid(iommu, did, pasid); - qi_flush_piotlb(iommu, did, pasid, 0, -1, 0); + + if (pgtt == PASID_ENTRY_PGTT_PT || pgtt == PASID_ENTRY_PGTT_FL_ONLY) + qi_flush_piotlb(iommu, did, pasid, 0, -1, 0); + else + iommu->flush.flush_iotlb(iommu, did, 0, 0, DMA_TLB_DSI_FLUSH); /* Device IOTLB doesn't need to be flushed in caching mode. */ if (!cap_caching_mode(iommu->cap)) diff --git a/drivers/iommu/intel/pasid.h b/drivers/iommu/intel/pasid.h index 5ff61c3d401f..c11bc8b833b8 100644 --- a/drivers/iommu/intel/pasid.h +++ b/drivers/iommu/intel/pasid.h @@ -99,6 +99,12 @@ static inline bool pasid_pte_is_present(struct pasid_entry *pte) return READ_ONCE(pte->val[0]) & PASID_PTE_PRESENT; } +/* Get PGTT field of a PASID table entry */ +static inline u16 pasid_pte_get_pgtt(struct pasid_entry *pte) +{ + return (u16)((READ_ONCE(pte->val[0]) >> 6) & 0x7); +} + extern unsigned int intel_pasid_max_id; int intel_pasid_alloc_table(struct device *dev); void intel_pasid_free_table(struct device *dev); |