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From: Gary R Hook <gary.hook@amd.com>
To: iommu@lists.linux-foundation.org
Cc: joro@8bytes.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] iommu/amd - Update logging information for new event type
Date: Tue, 01 May 2018 14:53:00 -0500 [thread overview]
Message-ID: <152520438022.30928.18122180240633468855.stgit@taos> (raw)
In-Reply-To: <152520429853.30928.9793486018349326103.stgit@taos>
A new events have been defined in the AMD IOMMU spec:
0x09 - "invalid PPR request"
Add support for logging this type of event.
Signed-off-by: Gary R Hook <gary.hook@amd.com>
~
~
~
---
drivers/iommu/amd_iommu.c | 10 +++++++++-
drivers/iommu/amd_iommu_types.h | 1 +
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index a557565d4413..009c6d801fae 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -544,7 +544,7 @@ static void amd_iommu_report_page_fault(u16 devid, u16 domain_id,
static void iommu_print_event(struct amd_iommu *iommu, void *__evt)
{
struct device *dev = iommu->iommu.dev;
- int type, devid, pasid, flags;
+ int type, devid, pasid, flags, tag;
volatile u32 *event = __evt;
int count = 0;
u64 address;
@@ -609,6 +609,14 @@ static void iommu_print_event(struct amd_iommu *iommu, void *__evt)
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
pasid, address, flags);
break;
+ case EVENT_TYPE_INV_PPR_REQ:
+ pasid = ((event[0] >> 16) & 0xFFFF)
+ | ((event[1] << 6) & 0xF0000);
+ tag = event[1] & 0x03FF;
+ dev_err(dev, "INVALID_PPR_REQUEST device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
+ PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
+ pasid, address, flags);
+ break;
default:
dev_err(dev, "UNKNOWN event[0]=0x%08x event[1]=0x%08x event[2]=0x%08x event[3]=0x%08x\n",
event[0], event[1], event[2], event[3]);
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index 1c9b080276c9..986cbe0cc189 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -133,6 +133,7 @@
#define EVENT_TYPE_CMD_HARD_ERR 0x6
#define EVENT_TYPE_IOTLB_INV_TO 0x7
#define EVENT_TYPE_INV_DEV_REQ 0x8
+#define EVENT_TYPE_INV_PPR_REQ 0x9
#define EVENT_DEVID_MASK 0xffff
#define EVENT_DEVID_SHIFT 0
#define EVENT_DOMID_MASK 0xffff
prev parent reply other threads:[~2018-05-01 19:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-01 19:52 [PATCH 0/2] Tweak AMD IOMMU logging Gary R Hook
2018-05-01 19:52 ` [PATCH 1/2] iommu/amd - Update the PASID information printed to the system log Gary R Hook
2018-05-03 13:57 ` Joerg Roedel
2018-05-03 18:09 ` Gary R Hook
2018-05-03 20:29 ` Joerg Roedel
2018-05-01 19:53 ` Gary R Hook [this message]
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