On Sat, Oct 03, 2009 at 04:48:12PM +0200, Manuel Lauss wrote:
> In arch/mips/lib/iomap.c there's this "#define PIO_MASK 0x0ffff"
> which limits the ability to successfully call ioport_map() to the
> first 64kB. This causes pata_pcmcia to error out on CF card
> probe because devm_ioport_map() is called with the remapped
> PCMCIA IO area, which is somewhere in MAP_BASE space.
Remapped, so that then actually be a physical address? That'd be wrong.
> I've temporarily removed the PIO_MASK check and pata_pcmcia
> works as expected. Is there any way around this, other than
> creating an Alchemy-specific ioport_map() function?
The provocative question - why would you want to have more than 64k I/O port
I/O ports are x86 legacy and deprecated. PCI limits allocations to at
most 256 bytes and I don't know of any devices that even come close to
When I wrote ioport_map I reviwed all uses of ioport addresses > 64k and
found each of them to be buggy ...