Date: Tue, 12 Feb 2002 11:02:44 -0800 From: "mike varga" <mike.varga@cavium.com> To: <freebsd-arch@freebsd.org> Subject: dmamap Message-ID: <009401c1b3f9$1ffe6980$b210a8c0@netscreen5>
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[-- Attachment #1 --] I am modifying a driver to map user addresses into kernel space to be used by DMA. Is there a facility like what exists within Linux that will allow me to map and wire user pages? Linux: alloc_kiovec(), map_user_kiobuf(), kmap(); I did find these, are they appropriate? FreeBSD: vm_map_create(), vm_map_user_pagable(); Also, is there an example or documentation that exists for what I am trying. [-- Attachment #2 --] <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 5.50.4522.1800" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>I am modifying a driver to </FONT></DIV> <DIV><FONT face=Arial size=2>map user addresses into kernel space</FONT></DIV> <DIV><FONT face=Arial size=2>to be used </FONT><FONT face=Arial size=2>by DMA.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Is there a facility like</FONT></DIV> <DIV><FONT face=Arial size=2>what exists within Linux</FONT></DIV> <DIV><FONT face=Arial size=2>that will allow me to map</FONT></DIV> <DIV><FONT face=Arial size=2>and wire user pages?</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Linux: alloc_kiovec(), map_user_kiobuf(), kmap();</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>I did find these, are they appropriate?</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>FreeBSD: vm_map_create(), vm_map_user_pagable();</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Also, is there an example or</FONT></DIV> <DIV><FONT face=Arial size=2>documentation that exists for</FONT></DIV> <DIV><FONT face=Arial size=2>what I am trying.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV></BODY></HTML>home | help
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