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AR# 32144

10.1 EDK, MPMC v4.03.a - SDMA PIM data corrupted when TX descriptor update interrupts RX payload write


RX data is corrupted when the transmit side of the SDMA updates its own buffer descriptor in memory. When interrupted by an Tx buffer descriptor update, the SDMA engine Rx side loses count of the address it was writing data to.
How do I resolve this issue?


This issue is fixed in MPMC v5.00.a, released in EDK 11.1.
AR# 32144
Date Created 02/18/2009
Last Updated 12/15/2012
Status Active
Type General Article
  • EDK - 10.1 sp2
  • EDK - 10.1
  • EDK - 10.1 sp1
  • EDK - 10.1 sp3
  • Multi-Port Memory Controller (MPMC)