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authorJoerg Roedel <joerg.roedel@amd.com>2009-09-03 14:02:10 +0200
committerJoerg Roedel <joerg.roedel@amd.com>2009-09-03 14:17:08 +0200
commite3e59876e82a5e1a07f365d5474e7b6943524725 (patch)
treeb085528765b73c3699d28652c86821fd231b0ece /arch/x86/kernel/amd_iommu.c
parent37d0892c5a94e208cf863e3b7bac014edee4346d (diff)
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@amd.com>
Diffstat (limited to 'arch/x86/kernel/amd_iommu.c')
-rw-r--r--arch/x86/kernel/amd_iommu.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 6c99f503780..364c6de2637 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 "