Computer system with an improved device and driver framework

Details Computer system with an improved device and driver framework Computer system with an improved device and driver framework

2006-08-22

2006-08-22

Thomson, William (Department: 2194)

Electrical computers and digital processing systems: interprogra

Device driver communication

Reexamination Certificate

active

07096473

ABSTRACT:
Each driver has a global driver section comprising drive program code and global driver data, both defining driver operations associated with a corresponding class of devices. Each device has an associated driver instantiation comprising local driver data, having an internal pointer to the global driver section of the instantiated driver, and possibly at least one external pointer to another driver instantiation. A device registry forms a list of device registry entries, each corresponding to a respective one of the drive instantiations. Driveer client code may perform operations on a given device by fetching in the device registry a pointer to the driver instantiation associated with the given device, and then use operations provided by the associated driver instantiation, directly or using further operations reached in other driver instantiations by using iteratively the external printer.

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Midha, Writing Device Drivers for the Solris OS (x86 Platform Edition), developer.sun.com, pp. 1-5, Jan. 1999.
Sun Microsystems, ChorusOS 4.0 Device Driver Framwork Guide, Jan. 12, 1999.
“How Sun Drives Wireless Architectures to 3G and Beyond”Enabling The Wireless Net EffectPart No. FE1431-0, SunWin No. 126239, Oct. 2000, Revision 11.

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