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amd-iommu: add dump for iommus described in ivrs table 

Add information about IOMMU devices described in the IVRS ACPI table to
the kernel log if amd_iommu_dump was specified on the kernel command
line.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
hifive-unleashed-5.1
Joerg Roedel 2009-05-20 13:53:57 +02:00
parent fefda117dd
commit 9c72041f71
1 changed files with 9 additions and 0 deletions
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9
arch/x86/kernel/amd_iommu_init.c
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@ -748,6 +748,15 @@ static int __init init_iommu_all(struct acpi_table_header *table)
h = (struct ivhd_header *)p;
switch (*p) {
case ACPI_IVHD_TYPE:
DUMP_printk("IOMMU: device: %02x:%02x.%01x cap: %04x "
"seg: %d flags: %01x info %04x\n",
PCI_BUS(h->devid), PCI_SLOT(h->devid),
PCI_FUNC(h->devid), h->cap_ptr,
h->pci_seg, h->flags, h->info);
DUMP_printk(" mmio-addr: %016llx\n",
h->mmio_phys);
iommu = kzalloc(sizeof(struct amd_iommu), GFP_KERNEL);
if (iommu == NULL)
return -ENOMEM;