Page 11 of 66
Device Instances, Properties, and Configuration Files (cont)
Bus Nexus Node:
- Provides architecture independence
- Contains knowledge of the bus itself, and how its services are implemented
e.g. EISA DMA services, SCSI HBA transport services
- Isolates leaf drivers from bus dependencies, allowing better portability
- Many DDI/DKI functions called from leaf drivers result in calls to their parent nexus driver to provide the bus-dependent service
See Also:
- "SunOS Kernel and Device Tree" in Writing Device Drivers
FIRST PREVIOUS
NEXT LAST
CONTENTS
Return to White Papers
|
Print-friendly Version
