From: Eric Auger <eric.auger@redhat.com>
To: eric.auger.pro@gmail.com, eric.auger@redhat.com,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
joro@8bytes.org, alex.williamson@redhat.com,
jacob.jun.pan@linux.intel.com, yi.l.liu@linux.intel.com,
jean-philippe.brucker@arm.com, will.deacon@arm.com,
robin.murphy@arm.com
Cc: kevin.tian@intel.com, ashok.raj@intel.com, marc.zyngier@arm.com,
christoffer.dall@arm.com, peter.maydell@linaro.org
Subject: [RFC v3 17/21] iommu/smmuv3: Report non recoverable faults
Date: Tue, 8 Jan 2019 11:26:29 +0100 [thread overview]
Message-ID: <20190108102633.17482-18-eric.auger@redhat.com> (raw)
In-Reply-To: <20190108102633.17482-1-eric.auger@redhat.com>
When a stage 1 related fault event is read from the event queue,
let's propagate it to potential external fault listeners, ie. users
who registered a fault handler.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
drivers/iommu/arm-smmu-v3.c | 124 ++++++++++++++++++++++++++++++++----
1 file changed, 113 insertions(+), 11 deletions(-)
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 999ee470a2ae..6a711cbbb228 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -168,6 +168,26 @@
#define ARM_SMMU_PRIQ_IRQ_CFG1 0xd8
#define ARM_SMMU_PRIQ_IRQ_CFG2 0xdc
+/* Events */
+#define ARM_SMMU_EVT_F_UUT 0x01
+#define ARM_SMMU_EVT_C_BAD_STREAMID 0x02
+#define ARM_SMMU_EVT_F_STE_FETCH 0x03
+#define ARM_SMMU_EVT_C_BAD_STE 0x04
+#define ARM_SMMU_EVT_F_BAD_ATS_TREQ 0x05
+#define ARM_SMMU_EVT_F_STREAM_DISABLED 0x06
+#define ARM_SMMU_EVT_F_TRANSL_FORBIDDEN 0x07
+#define ARM_SMMU_EVT_C_BAD_SUBSTREAMID 0x08
+#define ARM_SMMU_EVT_F_CD_FETCH 0x09
+#define ARM_SMMU_EVT_C_BAD_CD 0x0a
+#define ARM_SMMU_EVT_F_WALK_EABT 0x0b
+#define ARM_SMMU_EVT_F_TRANSLATION 0x10
+#define ARM_SMMU_EVT_F_ADDR_SIZE 0x11
+#define ARM_SMMU_EVT_F_ACCESS 0x12
+#define ARM_SMMU_EVT_F_PERMISSION 0x13
+#define ARM_SMMU_EVT_F_TLB_CONFLICT 0x20
+#define ARM_SMMU_EVT_F_CFG_CONFLICT 0x21
+#define ARM_SMMU_EVT_E_PAGE_REQUEST 0x24
+
/* Common MSI config fields */
#define MSI_CFG0_ADDR_MASK GENMASK_ULL(51, 2)
#define MSI_CFG2_SH GENMASK(5, 4)
@@ -333,6 +353,11 @@
#define EVTQ_MAX_SZ_SHIFT 7
#define EVTQ_0_ID GENMASK_ULL(7, 0)
+#define EVTQ_0_SUBSTREAMID GENMASK_ULL(31, 12)
+#define EVTQ_0_STREAMID GENMASK_ULL(63, 32)
+#define EVTQ_1_S2 GENMASK_ULL(39, 39)
+#define EVTQ_1_CLASS GENMASK_ULL(40, 41)
+#define EVTQ_3_FETCH_ADDR GENMASK_ULL(51, 3)
/* PRI queue */
#define PRIQ_ENT_DWORDS 2
@@ -1270,7 +1295,6 @@ static int arm_smmu_init_l2_strtab(struct arm_smmu_device *smmu, u32 sid)
return 0;
}
-__maybe_unused
static struct arm_smmu_master_data *
arm_smmu_find_master(struct arm_smmu_device *smmu, u32 sid)
{
@@ -1296,24 +1320,102 @@ arm_smmu_find_master(struct arm_smmu_device *smmu, u32 sid)
return master;
}
+static void arm_smmu_report_event(struct arm_smmu_device *smmu, u64 *evt)
+{
+ u64 fetch_addr = FIELD_GET(EVTQ_3_FETCH_ADDR, evt[3]);
+ u32 sid = FIELD_GET(EVTQ_0_STREAMID, evt[0]);
+ bool s1 = !FIELD_GET(EVTQ_1_S2, evt[1]);
+ u8 type = FIELD_GET(EVTQ_0_ID, evt[0]);
+ struct arm_smmu_master_data *master;
+ struct iommu_fault_event event;
+ bool propagate = true;
+ u64 addr = evt[2];
+ int i;
+
+ master = arm_smmu_find_master(smmu, sid);
+ if (WARN_ON(!master))
+ return;
+
+ event.fault.type = IOMMU_FAULT_DMA_UNRECOV;
+
+ switch (type) {
+ case ARM_SMMU_EVT_C_BAD_STREAMID:
+ event.fault.reason = IOMMU_FAULT_REASON_SOURCEID_INVALID;
+ break;
+ case ARM_SMMU_EVT_F_STREAM_DISABLED:
+ case ARM_SMMU_EVT_C_BAD_SUBSTREAMID:
+ event.fault.reason = IOMMU_FAULT_REASON_PASID_INVALID;
+ break;
+ case ARM_SMMU_EVT_F_CD_FETCH:
+ event.fault.reason = IOMMU_FAULT_REASON_PASID_FETCH;
+ break;
+ case ARM_SMMU_EVT_F_WALK_EABT:
+ event.fault.reason = IOMMU_FAULT_REASON_WALK_EABT;
+ event.fault.addr = addr;
+ event.fault.fetch_addr = fetch_addr;
+ propagate = s1;
+ break;
+ case ARM_SMMU_EVT_F_TRANSLATION:
+ event.fault.reason = IOMMU_FAULT_REASON_PTE_FETCH;
+ event.fault.addr = addr;
+ event.fault.fetch_addr = fetch_addr;
+ propagate = s1;
+ break;
+ case ARM_SMMU_EVT_F_PERMISSION:
+ event.fault.reason = IOMMU_FAULT_REASON_PERMISSION;
+ event.fault.addr = addr;
+ propagate = s1;
+ break;
+ case ARM_SMMU_EVT_F_ACCESS:
+ event.fault.reason = IOMMU_FAULT_REASON_ACCESS;
+ event.fault.addr = addr;
+ propagate = s1;
+ break;
+ case ARM_SMMU_EVT_C_BAD_STE:
+ event.fault.reason = IOMMU_FAULT_REASON_BAD_DEVICE_CONTEXT_ENTRY;
+ break;
+ case ARM_SMMU_EVT_C_BAD_CD:
+ event.fault.reason = IOMMU_FAULT_REASON_BAD_PASID_ENTRY;
+ break;
+ case ARM_SMMU_EVT_F_ADDR_SIZE:
+ event.fault.reason = IOMMU_FAULT_REASON_OOR_ADDRESS;
+ propagate = s1;
+ break;
+ case ARM_SMMU_EVT_F_STE_FETCH:
+ event.fault.reason = IOMMU_FAULT_REASON_DEVICE_CONTEXT_FETCH;
+ event.fault.fetch_addr = fetch_addr;
+ break;
+ /* End of addition */
+ case ARM_SMMU_EVT_E_PAGE_REQUEST:
+ case ARM_SMMU_EVT_F_TLB_CONFLICT:
+ case ARM_SMMU_EVT_F_CFG_CONFLICT:
+ case ARM_SMMU_EVT_F_BAD_ATS_TREQ:
+ case ARM_SMMU_EVT_F_TRANSL_FORBIDDEN:
+ case ARM_SMMU_EVT_F_UUT:
+ default:
+ event.fault.reason = IOMMU_FAULT_REASON_UNKNOWN;
+ }
+ /* only propagate the error if it relates to stage 1 */
+ if (s1)
+ iommu_report_device_fault(master->dev, &event);
+
+ dev_info(smmu->dev, "event 0x%02x received:\n", type);
+ for (i = 0; i < EVTQ_ENT_DWORDS; ++i) {
+ dev_info(smmu->dev, "\t0x%016llx\n",
+ (unsigned long long)evt[i]);
+ }
+}
+
/* IRQ and event handlers */
static irqreturn_t arm_smmu_evtq_thread(int irq, void *dev)
{
- int i;
struct arm_smmu_device *smmu = dev;
struct arm_smmu_queue *q = &smmu->evtq.q;
u64 evt[EVTQ_ENT_DWORDS];
do {
- while (!queue_remove_raw(q, evt)) {
- u8 id = FIELD_GET(EVTQ_0_ID, evt[0]);
-
- dev_info(smmu->dev, "event 0x%02x received:\n", id);
- for (i = 0; i < ARRAY_SIZE(evt); ++i)
- dev_info(smmu->dev, "\t0x%016llx\n",
- (unsigned long long)evt[i]);
-
- }
+ while (!queue_remove_raw(q, evt))
+ arm_smmu_report_event(smmu, evt);
/*
* Not much we can do on overflow, so scream and pretend we're
--
2.17.2
next prev parent reply other threads:[~2019-01-08 10:28 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-08 10:26 [RFC v3 00/21] SMMUv3 Nested Stage Setup Eric Auger
2019-01-08 10:26 ` [RFC v3 01/21] iommu: Introduce set_pasid_table API Eric Auger
2019-01-11 18:16 ` Jean-Philippe Brucker
2019-01-25 8:39 ` Auger Eric
2019-01-25 8:55 ` Auger Eric
2019-01-25 10:33 ` Jean-Philippe Brucker
2019-01-11 18:43 ` Alex Williamson
2019-01-25 9:20 ` Auger Eric
2019-01-08 10:26 ` [RFC v3 02/21] iommu: Introduce cache_invalidate API Eric Auger
2019-01-11 21:30 ` Alex Williamson
2019-01-25 16:49 ` Auger Eric
2019-01-28 17:32 ` Jean-Philippe Brucker
2019-01-29 17:49 ` Auger Eric
2019-01-29 23:16 ` Alex Williamson
2019-01-30 8:48 ` Auger Eric
2019-01-08 10:26 ` [RFC v3 03/21] iommu: Introduce bind_guest_msi Eric Auger
2019-01-11 22:44 ` Alex Williamson
2019-01-25 17:51 ` Auger Eric
2019-01-25 18:11 ` Auger Eric
2019-01-08 10:26 ` [RFC v3 04/21] vfio: VFIO_IOMMU_SET_PASID_TABLE Eric Auger
2019-01-11 22:50 ` Alex Williamson
2019-01-15 21:34 ` Auger Eric
2019-01-08 10:26 ` [RFC v3 05/21] vfio: VFIO_IOMMU_CACHE_INVALIDATE Eric Auger
2019-01-08 10:26 ` [RFC v3 06/21] vfio: VFIO_IOMMU_BIND_MSI Eric Auger
2019-01-11 23:02 ` Alex Williamson
2019-01-11 23:23 ` Alex Williamson
2019-01-08 10:26 ` [RFC v3 07/21] iommu/arm-smmu-v3: Link domains and devices Eric Auger
2019-01-08 10:26 ` [RFC v3 08/21] iommu/arm-smmu-v3: Maintain a SID->device structure Eric Auger
2019-01-08 10:26 ` [RFC v3 09/21] iommu/smmuv3: Get prepared for nested stage support Eric Auger
2019-01-11 16:04 ` Jean-Philippe Brucker
2019-01-25 19:27 ` Robin Murphy
2019-01-08 10:26 ` [RFC v3 10/21] iommu/smmuv3: Implement set_pasid_table Eric Auger
2019-01-08 10:26 ` [RFC v3 11/21] iommu/smmuv3: Implement cache_invalidate Eric Auger
2019-01-11 16:59 ` Jean-Philippe Brucker
2019-01-08 10:26 ` [RFC v3 12/21] dma-iommu: Implement NESTED_MSI cookie Eric Auger
2019-01-08 10:26 ` [RFC v3 13/21] iommu/smmuv3: Implement bind_guest_msi Eric Auger
2019-01-08 10:26 ` [RFC v3 14/21] iommu: introduce device fault data Eric Auger
[not found] ` <20190110104544.26f3bcb1@jacob-builder>
2019-01-11 11:06 ` Jean-Philippe Brucker
2019-01-14 22:32 ` Jacob Pan
2019-01-16 15:52 ` Jean-Philippe Brucker
2019-01-16 18:33 ` Auger Eric
2019-01-15 21:27 ` Auger Eric
2019-01-16 16:54 ` Jean-Philippe Brucker
2019-01-08 10:26 ` [RFC v3 15/21] driver core: add per device iommu param Eric Auger
2019-01-08 10:26 ` [RFC v3 16/21] iommu: introduce device fault report API Eric Auger
2019-01-08 10:26 ` Eric Auger [this message]
2019-01-11 17:46 ` [RFC v3 17/21] iommu/smmuv3: Report non recoverable faults Jean-Philippe Brucker
2019-01-15 21:06 ` Auger Eric
2019-01-16 12:25 ` Jean-Philippe Brucker
2019-01-16 12:49 ` Auger Eric
2019-01-08 10:26 ` [RFC v3 18/21] vfio-pci: Add a new VFIO_REGION_TYPE_NESTED region type Eric Auger
2019-01-11 23:58 ` Alex Williamson
2019-01-14 20:48 ` Auger Eric
2019-01-14 23:04 ` Alex Williamson
2019-01-15 21:56 ` Auger Eric
2019-01-08 10:26 ` [RFC v3 19/21] vfio-pci: Register an iommu fault handler Eric Auger
2019-01-08 10:26 ` [RFC v3 20/21] vfio-pci: Add VFIO_PCI_DMA_FAULT_IRQ_INDEX Eric Auger
2019-01-08 10:26 ` [RFC v3 21/21] vfio: Document nested stage control Eric Auger
2019-01-18 10:02 ` [RFC v3 00/21] SMMUv3 Nested Stage Setup Auger Eric
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