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List:       linux-arm-kernel
Subject:    Re: ioremap non-contiguous phys to contiguous virt?
From:       Marc Singer <elf () buici ! com>
Date:       2004-10-18 21:26:59
Message-ID: 20041018212659.GD947 () buici ! com
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On Mon, Oct 18, 2004 at 05:22:21PM -0400, Nicolas Pitre wrote:
> On Mon, 18 Oct 2004, Russell King - ARM Linux wrote:
> 
> > >   1) ignore the problem and create a custom maps driver with NO_XIP set.
> > >   2) create a custom maps driver, but use the io_table_init mechanism
> > >      to map the memory contiguously (eeww)
> > >   3) find a clever method to do something like this
> > > 
> > >      struct memvec mv = { { PHYS0, LEN0 }, {PHYS1, LEN1 } };
> > >      void* virt = ioremapv (memvec, 2);
> > 
> > 4) use the mtdconcat driver, just like the SA1100 map driver does.
> 
> mtdconcat will create a larger MTD logical out of multiple physical 
> flash chips.  It won't help for the case when the hw is silly enough to 
> split the _same_ flash chip over different physical areas.

There really are two devices...in one package.

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