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>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 57fb7a7cb6e8..28165902ae25 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -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;