[PATCH 2/2] iommu/amd - Update logging information for new event type

[Gary R Hook]

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.h...@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