Date: Mon, 11 Dec 2006 15:28:23 -0800 (PST) From: John Polstra <jdp@polstra.com> To: Andre Oppermann <andre@freebsd.org> Cc: freebsd-arch@freebsd.org Subject: Re: Where do MSI quirks belong? [patch] Message-ID: <XFMail.20061211152823.jdp@polstra.com> In-Reply-To: <457D3265.7070004@freebsd.org>
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On 11-Dec-2006 Andre Oppermann wrote: > IIRC it is not only a chipset problem but also sometimes how a MSI capable > chipset is wired on the mainboard. I agree, that is probably the case. The pci_get_msi_global_quirks function is intended to be open-ended in the sense that it should do whatever it needs to do to figure out whether the system as a whole can support MSI or not. The function comment mentions checking kenv strings as an example. At this point I don't know all of the other checks that need to be done, but they should all fit into that function. > So some probing would have to be done as well. Actual probing might be risky. On my Tyan 2721 motherboard, enabling MSI wedges the system solid, requiring a HW reset to recover. John
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