Date: Fri, 11 May 2007 03:49:01 +0100 From: Rui Paulo <rpaulo@fnop.net> To: freebsd-current@freebsd.org Subject: Re: Message Signalled Interrupts Question ... Message-ID: <86vef0oz1e.wl%rpaulo@fnop.net> In-Reply-To: <868xbwyu3i.wl%rpaulo@fnop.net> References: <20070511021015.GF21472@obelix.dsto.defence.gov.au> <868xbwyu3i.wl%rpaulo@fnop.net>
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At Fri, 11 May 2007 03:25:37 +0100,
Rui Paulo wrote:
>
> 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
Sorry, pciconf -lvc shows better information.
For example,
mskc0@pci1:0:0: class=0x020000 card=0x532111ab chip=0x436211ab rev=0x22 hdr=0x00
vendor = 'Marvell Semiconductor (Was: Galileo Technology Ltd)'
device = 'Yukon 88E8053 PCI-E Gigabit Ethernet Controller (Copper)'
class = network
subclass = ethernet
cap 01[48] = powerspec 2 supports D0 D1 D2 D3 current D0
cap 03[50] = VPD
cap 05[5c] = MSI supports 2 messages, 64 bit
cap 10[e0] = PCI-Express 1 legacy endpoint
--
Rui Paulo
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