Commit-ID: e3e59876e82a5e1a07f365d5474e7b6943524725
Gitweb: http://git.kernel.org/tip/e3e59876e82a5e1a07f365d5474e7b6943524725
Author: Joerg Roedel <joerg.roedel@xxxxxxx>
AuthorDate: Thu, 3 Sep 2009 14:02:10 +0200
Committer: Joerg Roedel <joerg.roedel@xxxxxxx>
CommitDate: Thu, 3 Sep 2009 14:17:08 +0200
x86/amd-iommu: Dump fault entry on DTE error
This patch adds code to dump the content of the device table
entry which caused an ILLEGAL_DEV_TABLE_ENTRY error from the
IOMMU hardware.
Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>
---
arch/x86/kernel/amd_iommu.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 6c99f50..364c6de 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -138,6 +138,15 @@ static int iommu_has_npcache(struct amd_iommu *iommu)
*
****************************************************************************/
+static void dump_dte_entry(u16 devid)
+{
+ int i;
+
+ for (i = 0; i < 8; ++i)
+ pr_err("AMD-Vi: DTE[%d]: %08x\n", i,
+ amd_iommu_dev_table[devid].data[i]);
+}
+
static void iommu_print_event(void *__evt)
{
u32 *event = __evt;
@@ -155,6 +164,7 @@ static void iommu_print_event(void *__evt)
"address=0x%016llx flags=0x%04x]\n",
PCI_BUS(devid), PCI_SLOT(devid), PCI_FUNC(devid),
address, flags);
+ dump_dte_entry(devid);
break;
case EVENT_TYPE_IO_FAULT:
printk("IO_PAGE_FAULT device=%02x:%02x.%x "
--
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