linux-kernel - 64 bit address to a pcie card

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Message-ID: <CAJvAG3784zaQQ4yxZQnT+LqusaQdo1imEDZWfZ3kg+fEXbz0oQ@mail.gmail.com>
Date:	Mon, 11 Jun 2012 17:04:26 +0530
From:	sumit chaudhary <chaudhary.sumit21@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: 64 bit address to a pcie card

Hi,

I have a 64 bit PCIe card that is connected to 64 bit PC running
ubuntu (Linux ubuntu 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7
14:56:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux). Linux enumerate
this PCIe card
and assign 64 bit addresses to 64 bit BARS.

Problem is that higher 4 bytes of these addresses are zero, even if
they are 64 bit address
they lies in 32 bit range.

Is it somehow possible to assign real 64 bit addresses ?

This is lspci output on my ubuntu PC.

Region 0: Memory at fddff000 (64-bit, non-prefetchable) [size=4K]
Region 2: Memory at fd000000 (64-bit, prefetchable) [size=8M]
Region 4: Memory at fc800000 (64-bit, prefetchable) [size=8M]

Please personally CC'ed the answers/comment.

Regards,
sumit.
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