Invention Grant
US08291146B2 System and method for accessing resources of a PCI express compliant device
有权
用于访问PCI Express兼容设备的资源的系统和方法
- Patent Title: System and method for accessing resources of a PCI express compliant device
- Patent Title (中): 用于访问PCI Express兼容设备的资源的系统和方法
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Application No.: US12836731Application Date: 2010-07-15
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Publication No.: US08291146B2Publication Date: 2012-10-16
- Inventor: Betty Luk , Gordon F. Caruk
- Applicant: Betty Luk , Gordon F. Caruk
- Applicant Address: CA Markham, Ontario US CA Sunnyvale
- Assignee: ATI Technologies ULC,Advanced Micro Devices, Inc.
- Current Assignee: ATI Technologies ULC,Advanced Micro Devices, Inc.
- Current Assignee Address: CA Markham, Ontario US CA Sunnyvale
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Main IPC: G06F13/20
- IPC: G06F13/20

Abstract:
A system and method using messages to access registers and memory in a PCI Express communications link environment. Vendor defined PCI Express messages can be used to read and write to the memory-mapped or register space of a device. Four types of accesses are defined using this messaging approach, namely memory read, memory write, configuration read and configuration write. The type of register access desired is defined by the appropriate value in a vendor-specific type field in the header of the vendor defined message. If a PCI Express compliant device at the other end of the PCI Express link does not support these types of messages, the messages are silently discarded by the receiver and no error is reported.
Public/Granted literature
- US20120017025A1 System and Method for Accessing Resources of a PCI Express Compliant Device Public/Granted day:2012-01-19
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