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From: Marius Strobl <marius@FreeBSD.org>
Date: Wed, 19 Nov 2008 22:09:03 +0000 (UTC)
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Subject: cvs commit: src/sys/dev/dcons dcons_crom.c
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marius      2008-11-19 22:09:03 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/dcons        dcons_crom.c 
  Log:
  SVN rev 185108 on 2008-11-19 22:09:03Z by marius
  
  Given that the buffer dcons_crom(4) exposes is used for both input
  and output, set BUS_DMA_COHERENT when creating the DMA map used for
  loading the buffer. As a side-effect this solves locking issues on
  sparc64 when dcons(4) calls bus_dmamap_sync(9) while in an interrupt
  filter, which are executed in a critical section, and iommu(4) has
  to use a sleep lock when taking advantage of the streaming buffer.
  
  Reported and tested by: kensmith
  Approved by:            simokawa
  
  Revision  Changes    Path
  1.10      +1 -1      src/sys/dev/dcons/dcons_crom.c