Chapter 7
Device Access: Programmed I/O
The Solaris OS provides driver developers with a comprehensive set of interfaces for
accessing device memory. These interfaces are designed to shield the driver from
platform-specific dependencies by handling mismatches between processor and device endianness as well as
enforcing any data order dependencies the device might have. By using these
interfaces, you can develop a single-source driver that runs on both the SPARC
and x86 processor architectures as well as the various platforms from each respective
processor family.
This chapter provides information on the following subjects:
