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From: Pyun YongHyeon <yongari@FreeBSD.org>
Date: Fri, 27 May 2011 18:39:18 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_8
Subject: cvs commit: src/sys/dev/vge if_vge.c
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yongari     2011-05-27 18:39:18 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_8)
    sys/dev/vge          if_vge.c 
  Log:
  SVN rev 222367 on 2011-05-27 18:39:18Z by yongari
  
  MFC r222142:
    Datasheet says vge(4) controllers support DAC but it seems that's
    not true on old PCI based controllers.  DAC configuration is read
    from EEPROM in device reset phase and driver can override DAC
    configuration.  However I guess there is an undocumented reason why
    EEPROM configuration does not enable DAC so do not blindly override
    DAC configuration.  Recent PCIe based controllers are supposed to
    support 64bit DMA so allow 64bit DMA only on PCIe based controllers.
  
    PR:   kern/157184
  
  Revision   Changes    Path
  1.37.2.13  +17 -2     src/sys/dev/vge/if_vge.c