| bus_dma.9 (141851) | bus_dma.9 (147398) |
|---|---|
| 1.\" Copyright (c) 2002, 2003 Hiten M. Pandya. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions, and the following disclaimer, --- 43 unchanged lines hidden (view full) --- 52.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 53.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 54.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 55.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 56.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 57.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 58.\" POSSIBILITY OF SUCH DAMAGE. 59.\" | 1.\" Copyright (c) 2002, 2003 Hiten M. Pandya. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions, and the following disclaimer, --- 43 unchanged lines hidden (view full) --- 52.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 53.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 54.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 55.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 56.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 57.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 58.\" POSSIBILITY OF SUCH DAMAGE. 59.\" |
| 60.\" $FreeBSD: head/share/man/man9/bus_dma.9 141851 2005-02-13 23:45:54Z ru $ | 60.\" $FreeBSD: head/share/man/man9/bus_dma.9 147398 2005-06-15 13:31:23Z ru $ |
| 61.\" $NetBSD: bus_dma.9,v 1.25 2002/10/14 13:43:16 wiz Exp $ 62.\" 63.Dd May 28, 2003 64.Dt BUS_DMA 9 65.Os 66.Sh NAME 67.Nm bus_dma , 68.Nm bus_dma_tag_create , --- 489 unchanged lines hidden (view full) --- 558.Pp 559Returns 560.Er EINVAL 561if the size of the mbuf chain exceeds the maximum limit of the 562DMA tag. 563.It Fn bus_dmamap_load_mbuf_sg "dmat" "map" "mbuf" "segs" "nsegs" "flags" 564This is just like 565.Fn bus_dmamap_load_mbuf | 61.\" $NetBSD: bus_dma.9,v 1.25 2002/10/14 13:43:16 wiz Exp $ 62.\" 63.Dd May 28, 2003 64.Dt BUS_DMA 9 65.Os 66.Sh NAME 67.Nm bus_dma , 68.Nm bus_dma_tag_create , --- 489 unchanged lines hidden (view full) --- 558.Pp 559Returns 560.Er EINVAL 561if the size of the mbuf chain exceeds the maximum limit of the 562DMA tag. 563.It Fn bus_dmamap_load_mbuf_sg "dmat" "map" "mbuf" "segs" "nsegs" "flags" 564This is just like 565.Fn bus_dmamap_load_mbuf |
| 566except that it returns immediately without calling a callback function. It is 567provided for efficiency. | 566except that it returns immediately without calling a callback function. 567It is provided for efficiency. |
| 568The scatter/gather segment array 569.Va segs 570is provided by the caller and filled in directly by the function. 571The 572.Va nsegs 573argument is returned with the number of segments filled in. 574Returns the same errors as 575.Fn bus_dmamap_load_mbuf . --- 241 unchanged lines hidden --- | 568The scatter/gather segment array 569.Va segs 570is provided by the caller and filled in directly by the function. 571The 572.Va nsegs 573argument is returned with the number of segments filled in. 574Returns the same errors as 575.Fn bus_dmamap_load_mbuf . --- 241 unchanged lines hidden --- |