linux-kernel - Re: [PATCH V3 3/4] PCI: Add support for non-BAR ROMs

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Message-ID: <20120905022932.GA4087@srcf.ucam.org>
Date:	Wed, 5 Sep 2012 03:29:32 +0100
From:	Matthew Garrett <mjg@...hat.com>
To:	Don Dutile <ddutile@...hat.com>
Cc:	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-efi@...r.kernel.org, mfleming@...el.com, dwmw2@...radead.org,
	bhelgaas@...gle.com
Subject: Re: [PATCH V3 3/4] PCI: Add support for non-BAR ROMs

On Tue, Sep 04, 2012 at 10:18:48PM -0400, Don Dutile wrote:
> >  	/*
> >+	 * Some devices may provide ROMs via a source other than the BAR
> >+	 */
> >+	if (pdev->rom&&  pdev->romlen) {
> >+		*size = pdev->romlen;
> >+		return phys_to_virt((phys_addr_t)pdev->rom);
>                        ^^^^^
>                          ioremap_nocache() ? ... or is caching rom ok?

If it's appearing through this pathway then it's not actually in ROM, 
the platform has pulled it out of somewhere else.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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