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<DIV>Dear Dave,<BR><BR>> If you are using memory that is not under the
kernel's memory management<BR>> you will need to use something other than
remap_pfn_range.<BR>> <BR><BR>Happenly and unfortunately we are using the
memory space out of the control from the kernel. We have 2GB memory on the
board and only 64(or 32) MB is reserved for the kernel. The rest large space
is for the data buffering or LUT use. In my question, the LUT memory is
located in the rest part rather than the kernel memory area. <BR> <BR>Any
more suggestion on how to mmap this LUT area? Any idea will be valuable for a
beginner like me. Thanks in advance. <BR> <BR>BR<BR>Ming<BR><BR></DIV>
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<DIV>“七件武器，七种完美” <A href="http://get.live.cn" target=_new>立刻体验！</A> <SPAN
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<DIV><SPAN class=554054917-13052008><FONT face=Arial size=2>I have a similar
setup where the upper 64MB are reserved for hardware. The mmap
implementation in my device driver works just fine using
io_remap_page_range().</FONT></SPAN></DIV>
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<DIV><SPAN class=554054917-13052008><FONT face=Arial size=2>Marc
Howard</FONT></SPAN></DIV>
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