Abstract:
An embodiment includes a module, comprising: a memory bus interface; circuitry; and a controller coupled to the memory bus interface and the circuitry, and configured to: collect meta-data associated with the circuitry; and enable access to the meta-data in response to a memory access received through the memory bus interface.
Abstract:
In an Error Correction Code (ECC)-based memory, a Single Error Correction Double Error Detection (SECDED) scheme is used with data aggregation to correct more than one error in a memory word received in a memory burst. By completely utilizing the Hamming distance of the SECDED (128,120) code, 8 ECC bits can potentially correct one error in 120 data bits. Each memory burst is effectively “expanded” from its actual 64 data bits to 120 data bits by “sharing” additional 56 data bits from all of the other related bursts. When a cache line of 512 bits is read, the SECDED (128,120) code is used in conjunction with all the received 64 ECC bits to correct more than one error in the actual 64 bits of data in a memory word. The data mapping of the present disclosure translates to a higher rate of error correction than the existing (72,64) SECDED code.
Abstract:
An embodiment includes a memory module, comprising: a module error interface; and a plurality of memory devices, each memory device coupled to the module error interface, including a data interface and an device error interface, and configured to communicate error information through the device error interface and the module error interface.
Abstract:
An embodiment includes a module, comprising: a memory bus interface; circuitry; and a controller coupled to the memory bus interface and the circuitry, and configured to: collect meta-data associated with the circuitry; and enable access to the meta-data in response to a memory access received through the memory bus interface.
Abstract:
An embodiment includes a system, comprising: an Error Correcting Code (ECC) memory comprising a plurality of memory locations, each memory location corresponding to a device address of the ECC memory; a system management bus (SMB); a baseboard management controller (BMC) coupled to the ECC memory through the SMB; and an operating system comprising a driver module coupled to the BMC through the SMB, the driver module being configured to receive through the Memory device address information associated with the ECC memory and to convert the device address information into physical address information independent of an ECC memory controller.