[PATCH v2 19/27] pci: PCIe driver for Marvell Armada 370/XP systems

Arnd Bergmann arnd at arndb.de
Fri Feb 1 11:07:49 EST 2013


On Friday 01 February 2013, Thomas Petazzoni wrote:
> So there is really a range of I/O addresses associated to it, even
> though the device will apparently not use it. Would it be possible to
> detect that the I/O range is not used by the device, and therefore
> avoid the allocation of an address decoding window for this I/O range?

I suspect it just gets disabled because the port number 0xc0010000 is
larger than IO_PORT_LIMIT and we cannot access that offset inside
of the virtual memory window we use for PIO.

	Arnd



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