Date: Wed, 11 Jan 2012 16:53:51 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r229967 - head/sys/powerpc/powerpc Message-ID: <201201111653.q0BGrpuq068124@svn.freebsd.org>
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Author: nwhitehorn Date: Wed Jan 11 16:53:51 2012 New Revision: 229967 URL: http://svn.freebsd.org/changeset/base/229967 Log: Add a memory barrier to bus_dmamap_sync(), as should have always been present. We need a sync instead of eieio, as eieio does not enforce storage ordering between main and device memory. Modified: head/sys/powerpc/powerpc/busdma_machdep.c Modified: head/sys/powerpc/powerpc/busdma_machdep.c ============================================================================== --- head/sys/powerpc/powerpc/busdma_machdep.c Wed Jan 11 16:35:26 2012 (r229966) +++ head/sys/powerpc/powerpc/busdma_machdep.c Wed Jan 11 16:53:51 2012 (r229967) @@ -51,6 +51,7 @@ __FBSDID("$FreeBSD$"); #include <machine/atomic.h> #include <machine/bus.h> +#include <machine/cpufunc.h> #include <machine/md_var.h> #include "iommu_if.h" @@ -979,6 +980,8 @@ _bus_dmamap_sync(bus_dma_tag_t dmat, bus dmat->bounce_zone->total_bounced++; } } + + powerpc_sync(); } static void
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