dm: pci: Add a uclass for PCI
Add a uclass for PCI controllers and a generic one for PCI devices. Adjust
the 'pci' command and the existing PCI support to work with this new uclass.
Keep most of the compatibility code in a separate file so that it can be
removed one day.
TODO: Add more header file comments to the new parts of pci.h
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/cmd_pci.c b/common/cmd_pci.c
index e3a77e3..dcecef8 100644
--- a/common/cmd_pci.c
+++ b/common/cmd_pci.c
@@ -48,6 +48,7 @@
unsigned char HeaderType;
unsigned short VendorID;
pci_dev_t dev;
+ int ret;
if (!hose)
return;
@@ -74,7 +75,10 @@
if (pci_skip_dev(hose, dev))
continue;
- pci_read_config_word(dev, PCI_VENDOR_ID, &VendorID);
+ ret = pci_read_config_word(dev, PCI_VENDOR_ID,
+ &VendorID);
+ if (ret)
+ goto error;
if ((VendorID == 0xFFFF) || (VendorID == 0x0000))
continue;
@@ -91,8 +95,12 @@
BusNum, Device, Function);
pci_header_show(dev);
}
- }
- }
+ }
+ }
+
+ return;
+error:
+ printf("Cannot read bus configuration: %d\n", ret);
}