Date: Sun, 22 Mar 2009 21:00:58 +0000 (UTC) From: Robert Noland <rnoland@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r190283 - head/share/man/man9 Message-ID: <200903222100.n2ML0wwG083537@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: rnoland Date: Sun Mar 22 21:00:58 2009 New Revision: 190283 URL: http://svn.freebsd.org/changeset/base/190283 Log: Correct the documentation to reflect the fact that BUS_DMA_NOCACHE is a flag to bus_dmamem_alloc() rather than bus_dmamap_load(); Discussed with: kib MFC after: 3 days Modified: head/share/man/man9/bus_dma.9 Modified: head/share/man/man9/bus_dma.9 ============================================================================== --- head/share/man/man9/bus_dma.9 Sun Mar 22 20:58:29 2009 (r190282) +++ head/share/man/man9/bus_dma.9 Sun Mar 22 21:00:58 2009 (r190283) @@ -561,15 +561,6 @@ Are as follows: .It Dv BUS_DMA_NOWAIT The load should not be deferred in case of insufficient mapping resources, and instead should return immediately with an appropriate error. -.It Dv BUS_DMA_NOCACHE -The allocated memory will not be cached in the processor caches. -All memory accesses appear on the bus and are executed -without reordering. -On the amd64 and i386 architectures this flag results in the -Strong Uncacheable PAT to be set for the allocated virtual address range. -The -.Dv BUS_DMA_NOCACHE -flag is currently implemented on amd64, i386 and sparc64. .El .El .Pp @@ -785,6 +776,15 @@ the flag is currently implemented on arm and sparc64. .It Dv BUS_DMA_ZERO Causes the allocated memory to be set to all zeros. +.It Dv BUS_DMA_NOCACHE +The allocated memory will not be cached in the processor caches. +All memory accesses appear on the bus and are executed +without reordering. +On the amd64 and i386 architectures this flag results in the +Strong Uncacheable PAT to be set for the allocated virtual address range. +The +.Dv BUS_DMA_NOCACHE +flag is currently implemented on amd64, i386 and sparc64. .El .It Fa mapp Pointer to a
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200903222100.n2ML0wwG083537>