From: David S. Miller <davem@sunset.davemloft.net>
Date: Thu, 3 May 2007 00:31:36 +0000 (-0700)
Subject: [SPARC64]: SUN4U PCI-E controller support.
X-Git-Tag: v2.6.22-rc1~823^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=861fe90656b8e20d750d73c57088dc52d316ce7b;p=pandora-kernel.git

[SPARC64]: SUN4U PCI-E controller support.

Some minor refactoring in the generic code was necessary for
this:

1) This controller requires 8-byte access to the interrupt map
   and clear register.  They are 64-bits on all the other
   SBUS and PCI controllers anyways, so this was easy to cure.

2) The IMAP register has a different layout and some bits that we
   need to preserve, so use a read/modify/write when making
   changes to the IMAP register in generic code.

3) Flushing the entire IOMMU TLB is best done with a single write
   to a register on this PCI controller, add a iommu->iommu_flushinv
   for this.

Still lacks MSI support, that will come later.

Signed-off-by: David S. Miller <davem@davemloft.net>
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