System and method for sharing PCI bus devices

Details System and method for sharing PCI bus devices System and method for sharing PCI bus devices

2007-02-27

2007-02-27

Thomson, William (Department: 2194)

Electrical computers and digital processing systems: interprogra

Interprogram communication using shared memory

C719S311000, C710S100000, C710S260000, C711S001000, C711S100000, C711S147000, C711S148000, C711S152000, C711S153000

Reexamination Certificate

active

10112512

ABSTRACT:
A plurality of processors share a device using a common PCI bus. Each processor includes a PCI addressable memory area where data sent to or received from the device is stored. Each processor includes a unique identifier and also includes a PCI controller for accessing the PCI bus. Data is sent from a processor to the device by writing the data to the PCI addressable memory area and signaling the device using the processor's unique identifier. The device determines the memory address corresponding to the processor's unique identifier and reads the data. The device sends data to a processor by writing the data to the PCI addressable memory area and signaling the processor using a PCI mailbox assigned to the device and included in the processor's PCI controller. Device parameters are sent by the processors to the device during initialization and the device determines whether a parameter conflict exists.

REFERENCES:
patent: 5446841 (1995-08-01), Kitano et al.
patent: 5634073 (1997-05-01), Collins et al.
patent: 5796605 (1998-08-01), Hagersten
patent: 5907862 (1999-05-01), Smalley
patent: 5913045 (1999-06-01), Gillespie et al.
patent: 6349331 (2002-02-01), Andra et al.
patent: 6499048 (2002-12-01), Williams
patent: 6530002 (2003-03-01), Martin et al.
patent: 6587868 (2003-07-01), Porterfield
patent: 6604159 (2003-08-01), Thekkath et al.
patent: 6772255 (2004-08-01), Daynes
patent: 6792497 (2004-09-01), Gold et al.
patent: 6813522 (2004-11-01), Schwarm et al.
patent: 2002/0010880 (2002-01-01), Williams
patent: 2002/0029310 (2002-03-01), Klein
patent: 2002/0065989 (2002-05-01), Chauvel et al.
patent: 2002/0073164 (2002-06-01), Hagersten et al.
patent: 2003/0126336 (2003-07-01), Creta et al.

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