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3 Commits

Author SHA1 Message Date
Paul Mundt
9ad62ec4f7 sh: Fix up early PCI PERR/SERR IRQ handling. 
This adds support for handling early PERR/SERR triggering in between
controller registration and the initial bus scan. Buggy cards end up
asserting these as soon as the M66EN scan is undertaken, resulting in
an early crash.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
 2010-02-03 16:46:20 +09:00
Paul Mundt
ef407beefb sh: Hook up ERR/PERR/SERR detection for SH7780 PCI host controllers. 
These were never handled before, so implement some common infrastructure
to support them, then make use of that in the SH7780-specific code. In
practice there is little here that can not be generalized for SH4 parts,
which will be an incremental change as the 7780/7751 code is gradually
unified.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
 2010-02-01 16:39:46 +09:00
Paul Mundt
85b59f5bb2 sh: Enable PCI66 support for SH7780 host controller. 
This adds some helper glue for scanning the bus and determining if all
of the devices are 66MHz capable or not before flipping on 66MHz mode.
This isn't quite to spec, but it's fairly consistent with what other
embedded controllers end up having to do.

Scanning code cribbed from the MIPS txx9 PCI code.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
 2010-02-01 13:01:42 +09:00