From: Paul Mundt <lethal@linux-sh.org>
To: linux-sh@vger.kernel.org
Subject: Re: [BUG] cannot access IO ports in CMI8738 sound chip.
Date: Mon, 21 Jan 2008 06:41:57 +0000 [thread overview]
Message-ID: <20080121064157.GB31245@linux-sh.org> (raw)
In-Reply-To: <20080121.152550.68560038.matsu@igel.co.jp>
On Mon, Jan 21, 2008 at 03:25:50PM +0900, Katsuya MATSUBARA wrote:
> Unfortunately CMI8738 cannot treat (large) memory addresses
> as IO port numers because some upper bits of 'Base Address
> Register 0' in the PCI configuration space cannot be updated.
> (pcibios_setup_bars() in arch/sh/drivers/pci/pci-auto.c
> updates the register with the memory address.)
>
> How should I fix the problem?
Disable PCI_AUTO_UPDATE_RESOURCES like the dreamcast does?
It's a reasonable workaround for PCI-like host controllers that don't
"quite" comply with the PCI specification.
next prev parent reply other threads:[~2008-01-21 6:41 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-21 6:25 [BUG] cannot access IO ports in CMI8738 sound chip Katsuya MATSUBARA
2008-01-21 6:41 ` Paul Mundt [this message]
2008-01-21 7:39 ` Katsuya MATSUBARA
2008-01-21 7:52 ` Paul Mundt
2008-01-21 8:04 ` Katsuya MATSUBARA
2008-01-21 8:35 ` Paul Mundt
2008-01-21 9:18 ` Katsuya MATSUBARA
2008-01-21 9:37 ` Paul Mundt
2008-01-30 5:27 ` Katsuya MATSUBARA
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