Commit e3e59876 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

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: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 37d0892c

arch/x86/kernel/amd_iommu.c

+10 −0
Original line number Original line Diff line number Diff line
@@ -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 "