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x86/amd-iommu: Dump illegal command on ILLEGAL_COMMAND_ERROR

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This patch adds code to dump the command which caused an
ILLEGAL_COMMAND_ERROR raised by the IOMMU hardware.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2009-09-03 14:25:02 +02:00
parent e3e59876e8
commit 945b4ac44e
1 changed files with 10 additions and 0 deletions
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10
arch/x86/kernel/amd_iommu.c
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@ -147,6 +147,15 @@ static void dump_dte_entry(u16 devid)
amd_iommu_dev_table[devid].data[i]);
}
static void dump_command(unsigned long phys_addr)
{
struct iommu_cmd *cmd = phys_to_virt(phys_addr);
int i;
for (i = 0; i < 4; ++i)
pr_err("AMD-Vi: CMD[%d]: %08x\n", i, cmd->data[i]);
}
static void iommu_print_event(void *__evt)
{
u32 *event = __evt;
@ -186,6 +195,7 @@ static void iommu_print_event(void *__evt)
break;
case EVENT_TYPE_ILL_CMD:
printk("ILLEGAL_COMMAND_ERROR address=0x%016llx]\n", address);
dump_command(address);
break;
case EVENT_TYPE_CMD_HARD_ERR:
printk("COMMAND_HARDWARE_ERROR address=0x%016llx "