Date: Wed, 14 Jan 2009 21:04:23 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/dev/dcons dcons_crom.c Message-ID: <200901142104.n0EL4ZxB038511@repoman.freebsd.org>
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marius 2009-01-14 21:04:23 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_7)
sys/dev/dcons dcons_crom.c
Log:
SVN rev 187240 on 2009-01-14 21:04:23Z by marius
MFC: r185108
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
1.9.2.1 +1 -1 src/sys/dev/dcons/dcons_crom.c
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