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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>
This commit is contained in:
Joerg Roedel 2009-09-03 14:02:10 +02:00
parent 37d0892c5a
commit e3e59876e8
1 changed files with 10 additions and 0 deletions
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10
arch/x86/kernel/amd_iommu.c
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@ -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) static void iommu_print_event(void *__evt)
{ {
u32 *event = __evt; u32 *event = __evt;
@ -155,6 +164,7 @@ static void iommu_print_event(void *__evt)
"address=0x%016llx flags=0x%04x]\n", "address=0x%016llx flags=0x%04x]\n",
PCI_BUS(devid), PCI_SLOT(devid), PCI_FUNC(devid), PCI_BUS(devid), PCI_SLOT(devid), PCI_FUNC(devid),
address, flags); address, flags);
dump_dte_entry(devid);
break; break;
case EVENT_TYPE_IO_FAULT: case EVENT_TYPE_IO_FAULT:
printk("IO_PAGE_FAULT device=%02x:%02x.%x " printk("IO_PAGE_FAULT device=%02x:%02x.%x "