From: Trevor Woerner <ppc339@vtnet.ca>
To: linuxppc-embedded@lists.linuxppc.org
Subject: address translation
Date: Wed, 14 May 2003 23:50:05 -0400 [thread overview]
Message-ID: <200305142350.05555.ppc339@vtnet.ca> (raw)
I want to setup a mapping so that when anything tries to read/write the
16 bytes of 0x1f0 - 0x1ff the actual physical memory that gets accessed
is 0xf7000000 - 0xf700000f.
I can't figure out what I need to call to get this done.
ioremap() is the exact opposite of what I want, and remap_page_range()
comes very close but aligns everything to the page boundary (in other
words, after I do the mapping, accessing 0x1f0 gives me 0xf70001f0
instead of 0xf7000000). I also tried using io_block_mapping(), which I
use in my platform io setup routine, but the MMU crashed with one of
those '###A' thingies. :-)
any suggestions, please?
Trevor
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next reply other threads:[~2003-05-15 3:50 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-15 3:50 Trevor Woerner [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-05-15 11:29 address translation Trevor Woerner
2003-05-15 11:46 ` Gary Thomas
2003-05-16 3:13 ` Trevor Woerner
2003-05-15 12:13 ` Magnus Damm
2003-05-16 3:14 ` Trevor Woerner
2003-05-15 14:05 ` Benjamin Herrenschmidt
2003-05-16 4:02 ` Trevor Woerner
2003-05-16 8:35 ` Geert Uytterhoeven
2003-05-16 9:00 ` Benjamin Herrenschmidt
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