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From: Pyun YongHyeon <yongari@FreeBSD.org>
Date: Sun, 22 Nov 2009 20:50:27 +0000 (UTC)
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Subject: cvs commit: src/sys/dev/bge if_bge.c if_bgereg.h
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yongari     2009-11-22 20:50:27 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/bge          if_bge.c if_bgereg.h 
  Log:
  SVN rev 199670 on 2009-11-22 20:50:27Z by yongari
  
  Fix two long standing bugs on bge(4). Most pre BCM5755 controllers
  have a DMA bug when buffer address crosses a multiple of the 4GB
  boundary(e.g. 4GB, 8GB, 12GB etc). Limit DMA address to be within
  4GB address for these controllers. The second DMA bug limits DMA
  address to be within 40bit address space. This bug applies to
  BCM5714 and BCM5715 and 5708(bce(4) controller). This is not
  actually a MAC controller bug but an issue with the embedded PCIe
  to PCI-X bridge in the device. So for BCM5714/BCM5715 controllers
  also limit the DMA address to be within 40bit address space.
  Special thanks to davidch@ who gave me detailed errata information.
  I think this change will fix long standing bge(4) instability
  issues on systems with more than 4GB memory.
  
  Reviewed by:    davidch
  
  Revision  Changes    Path
  1.255     +24 -1     src/sys/dev/bge/if_bge.c
  1.93      +9 -0      src/sys/dev/bge/if_bgereg.h