Up to now we have only reported translation faults. Now that the guest can induce some configuration faults, let's report them too. Add propagation for BAD_SUBSTREAMID, CD_FETCH, BAD_CD, WALK_EABT. We also fix the transcoding for some existing translation faults. Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx> --- v14 -> v15: - adapt to removal of IOMMU_FAULT_UNRECOV_FETCH_ADDR_VALID in [PATCH v13 10/10] iommu/arm-smmu-v3: Add stall support for platform devices --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 40 +++++++++++++++++++-- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 4 +++ 2 files changed, 42 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index e84a7c3e8730..ddfc069c10ae 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -1488,6 +1488,7 @@ static int arm_smmu_handle_evt(struct arm_smmu_device *smmu, u64 *evt) u32 perm = 0; struct arm_smmu_master *master; bool ssid_valid = evt[0] & EVTQ_0_SSV; + u8 type = FIELD_GET(EVTQ_0_ID, evt[0]); u32 sid = FIELD_GET(EVTQ_0_SID, evt[0]); struct iommu_fault_event fault_evt = { }; struct iommu_fault *flt = &fault_evt.fault; @@ -1540,8 +1541,6 @@ static int arm_smmu_handle_evt(struct arm_smmu_device *smmu, u64 *evt) } else { flt->type = IOMMU_FAULT_DMA_UNRECOV; flt->event = (struct iommu_fault_unrecoverable) { - .reason = reason, - .flags = IOMMU_FAULT_UNRECOV_ADDR_VALID, .perm = perm, .addr = FIELD_GET(EVTQ_2_ADDR, evt[2]), }; @@ -1550,6 +1549,43 @@ static int arm_smmu_handle_evt(struct arm_smmu_device *smmu, u64 *evt) flt->event.flags |= IOMMU_FAULT_UNRECOV_PASID_VALID; flt->event.pasid = FIELD_GET(EVTQ_0_SSID, evt[0]); } + + switch (type) { + case EVT_ID_TRANSLATION_FAULT: + flt->event.reason = IOMMU_FAULT_REASON_PTE_FETCH; + flt->event.flags |= IOMMU_FAULT_UNRECOV_ADDR_VALID; + break; + case EVT_ID_ADDR_SIZE_FAULT: + flt->event.reason = IOMMU_FAULT_REASON_OOR_ADDRESS; + flt->event.flags |= IOMMU_FAULT_UNRECOV_ADDR_VALID; + break; + case EVT_ID_ACCESS_FAULT: + flt->event.reason = IOMMU_FAULT_REASON_ACCESS; + flt->event.flags |= IOMMU_FAULT_UNRECOV_ADDR_VALID; + break; + case EVT_ID_PERMISSION_FAULT: + flt->event.reason = IOMMU_FAULT_REASON_PERMISSION; + flt->event.flags |= IOMMU_FAULT_UNRECOV_ADDR_VALID; + break; + case EVT_ID_BAD_SUBSTREAMID: + flt->event.reason = IOMMU_FAULT_REASON_PASID_INVALID; + break; + case EVT_ID_CD_FETCH: + flt->event.reason = IOMMU_FAULT_REASON_PASID_FETCH; + flt->event.flags |= IOMMU_FAULT_UNRECOV_FETCH_ADDR_VALID; + break; + case EVT_ID_BAD_CD: + flt->event.reason = IOMMU_FAULT_REASON_BAD_PASID_ENTRY; + break; + case EVT_ID_WALK_EABT: + flt->event.reason = IOMMU_FAULT_REASON_WALK_EABT; + flt->event.flags |= IOMMU_FAULT_UNRECOV_ADDR_VALID | + IOMMU_FAULT_UNRECOV_FETCH_ADDR_VALID; + break; + default: + /* TODO: report other unrecoverable faults. */ + return -EFAULT; + } } mutex_lock(&smmu->streams_mutex); diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h index 05959df01618..b914570ee5ba 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -379,6 +379,10 @@ #define EVTQ_0_ID GENMASK_ULL(7, 0) +#define EVT_ID_BAD_SUBSTREAMID 0x08 +#define EVT_ID_CD_FETCH 0x09 +#define EVT_ID_BAD_CD 0x0a +#define EVT_ID_WALK_EABT 0x0b #define EVT_ID_TRANSLATION_FAULT 0x10 #define EVT_ID_ADDR_SIZE_FAULT 0x11 #define EVT_ID_ACCESS_FAULT 0x12 -- 2.26.3 _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm