Linux与Windows的设备驱动差异比较.pptVIP

A Comparative Study of the Linux and Windows Device Driver Architectures with a focus on IEEE1394 (high speed serial bus) drivers Melekam Tsegaye g98t4414@campus.ru.ac.za Overview The Linux and Windows driver architectures The Linux and Windows IEEE 1394 driver stacks Driver development on the two platforms Results of the study Why the study was conducted ? Microsoft Windows and Linux Two of the most popular operating systems No previous comparisons of their driver architectures done by other researchers IEEE 1394 (firewire) Popular bus offering high data transfer rates Active research area for the CS department’s Audio Engineering Group IEEE 1394 Data Transfer rates of 100, 200 and 400 Mbps Isochronous mode of transfer Guaranteed bandwidth (80%) Asynchronous mode of transfer Guaranteed packet delivery (20% or more) Fully plug ‘n play IEEE 1394 Consumer Products Device Drivers A driver is a piece of software that extends a kernel’s functionality Drivers enable applications (through the kernel) to transfer data to and from a device to control the a device to allow modification of its attributes Composed of a set of routines that a kernel calls at appropriate times e.g. read/write Typical driver routines A driver would implement Initialisation Cleanup Open Read Write I/O Control (ioctl) Close The Windows driver architecture The Linux driver architecture Side by side comparison of the two driver architectures IEEE 1394 driver stacks The Windows IEEE 1394 stack closed source maintained by Microsoft stable The Linux IEEE 1394 stack open source maintained by the Linux 1394 community (private individuals) tagged experimental The Windows IEEE 1394 stack Host controller Bus driver Client drivers Communication I/O request block (IRB) The Linux IEEE 1394 stack Host controller Bus drivers Client drivers Communication direct function calls Direct driver possible Side by side comparison of the two IEEE 1394 stacks The Windows IEEE 1394 implementation The Linux IEEE 139