PCI: Cache PCI device IDs

The patch caches IDs (vendor, device, sub-vendor, sub-device and
class) for PCI devices. Those IDs could be used to identify one
specific PCI device later.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/core/pci.c b/core/pci.c
index 92ff2cf..a8015cb 100644
--- a/core/pci.c
+++ b/core/pci.c
@@ -161,6 +161,11 @@ static struct pci_device *pci_scan_one(struct phb *phb, struct pci_device *paren
 		goto fail;
 	}
 	pd->bdfn = bdfn;
+	pd->vdid = vdid;
+	pci_cfg_read32(phb, bdfn, PCI_CFG_SUBSYS_VENDOR_ID, &pd->sub_vdid);
+	pci_cfg_read32(phb, bdfn, PCI_CFG_REV_ID, &pd->class);
+	pd->class >>= 8;
+
 	pd->parent = parent;
 	list_head_init(&pd->pcrf);
 	list_head_init(&pd->children);