[Skiboot] [PATCH 1/6] PCI: Cache PCI device IDs

[Alistair Popple]

From: Gavin Shan <gwshan at linux.vnet.ibm.com>

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 at linux.vnet.ibm.com>
---
 core/pci.c    | 5 +++++
 include/pci.h | 3 +++
 2 files changed, 8 insertions(+)

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);
diff --git a/include/pci.h b/include/pci.h
index f74c961..ca3f949 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -138,6 +138,9 @@ struct pci_device {
 	uint8_t			subordinate_bus;
 	uint32_t		scan_map;
 
+	uint32_t		vdid;
+	uint32_t		sub_vdid;
+	uint32_t		class;
 	uint64_t		cap_list;
 	uint32_t		cap[64];
 	uint32_t		mps;		/* Max payload size capability */
-- 
2.1.4