diff options
Diffstat (limited to 'src/include/device')
| -rw-r--r-- | src/include/device/device.h | 6 | ||||
| -rw-r--r-- | src/include/device/pci.h | 1 |
2 files changed, 6 insertions, 1 deletions
diff --git a/src/include/device/device.h b/src/include/device/device.h index db91fcc1ef..167a518f2a 100644 --- a/src/include/device/device.h +++ b/src/include/device/device.h @@ -57,7 +57,8 @@ struct bus { */ struct device { - struct bus * bus; /* bus this device is on */ + struct bus * bus; /* bus this device is on, for bridge + * devices, it is the up stream bus */ device_t sibling; /* next device on this bus */ device_t next; /* chain of all devices */ @@ -79,7 +80,10 @@ struct device { struct resource resource[MAX_RESOURCES]; unsigned int resources; + /* link are (down sream) buses attached to the device, usually a leaf + * device with no child have 0 bus attached and a bridge has 1 bus */ struct bus link[MAX_LINKS]; + /* number of buses attached to the device */ unsigned int links; unsigned long rom_address; diff --git a/src/include/device/pci.h b/src/include/device/pci.h index 2c9797fa6c..0ee31f1cb9 100644 --- a/src/include/device/pci.h +++ b/src/include/device/pci.h @@ -23,6 +23,7 @@ /* Common pci operations without a standard interface */ struct pci_operations { + /* set the Subsystem IDs for the PCI device */ void (*set_subsystem)(device_t dev, unsigned vendor, unsigned device); }; |