Date: Fri, 11 May 2007 03:25:37 +0100 From: Rui Paulo <rpaulo@fnop.net> To: freebsd-current@freebsd.org Subject: Re: Message Signalled Interrupts Question ... Message-ID: <868xbwyu3i.wl%rpaulo@fnop.net> In-Reply-To: <20070511021015.GF21472@obelix.dsto.defence.gov.au> References: <20070511021015.GF21472@obelix.dsto.defence.gov.au>
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At Fri, 11 May 2007 10:10:15 +0800,
Wilkinson, Alex wrote:
>
> Howdy,
>
> How does one know whether their PCI device supports MSI
> and that FreeBSD is using MSI for this device ?
You can boot with verbose mode on and the info will show up on dmesg.
For example
found-> vendor=0x11ab, dev=0x4362, revid=0x22
bus=1, slot=0, func=0
class=02-00-00, hdrtype=0x00, mfdev=0
cmdreg=0x0007, statreg=0x0010, cachelnsz=64 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=11
powerspec 2 supports D0 D1 D2 D3 current D0
MSI supports 2 messages, 64 bit
--
Rui Paulo
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