Date: Mon, 07 Jan 2008 12:48:21 +1030 From: Benjamin Close <Benjamin.Close@clearchain.com> To: vittorio <vdemart1@tin.it> Cc: freebsd-questions@freebsd.org, freebsd-mobile@freebsd.org Subject: Re: wpi error: bus_dmamem_alloc failed to align memory properly Message-ID: <47818BED.1000701@clearchain.com> In-Reply-To: <200801061852.29274.vdemart1@tin.it> References: <200801061852.29274.vdemart1@tin.it>
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vittorio wrote:
> Context: HP laptop DV6000, centrino duo, FreeBSD 7.0-BETA4
> When loading if_wpi I get the following line saying that "bus_dmamem_alloc
> failed to align memory properly"
> <SNIP>
> wpi0: <Intel(R) PRO/Wireless 3945ABG> mem 0xd8000000-0xd8000fff irq 16 at
> device 0.0 on pci2
> bus_dmamem_alloc failed to align memory properly.
> last message repeated 30 times
> wpi0: Ethernet address: 00:19:d2:99:e3:cb
> wpi0: [ITHREAD]
> wpi0: 11a rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
> wpi0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
> wpi0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps
> 36Mbps 48Mbps 54
> </SNIP>
>
> Therefore I'm unable to make wpi0 work at all.
>
> Could you please tell me what should I do?
>
> Ciao, Vittorio
>
>
The bus_dmamem_alloc message is harmless in your case. Due to
limitations in the freebsd allocator, sometimes requesting a 16k aligned
block of dma memory fails. As a temporary work around the wpi driver
reattempts the allocation. If it truely does fail you'll not get a wpi0
device showing up, which clearly you did :).
These warning messages will go away when I sync the next lot of updates
to the driver which aren't quite ready yet.
Can you describe a little more what you mean by wpi doesn't work?
Cheers,
Benjamin
wpi driver maintainer
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