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AR# 32749

11.1 EDK, MPMC v5.00.a - MPMC SDMA does not function "dummy" buffer descriptors

Description

When using the MPMC SDMA with a buffer descriptor which points to a zero-length buffer, data is corrupted. How do I resolve this issue?

Solution

The MPMC SDMA will not support dummy buffer descriptors at this time. Dummy buffer descriptors point to data buffers with a length of 0. 

 

The MPMC data sheet will be updated to reflect this limitation, starting with MPMC v5.02.a, to be released in EDK 11.1.

AR# 32749
Date Created 05/22/2009
Last Updated 05/21/2014
Status Archive
Type General Article