Date: Mon, 22 Sep 2008 17:11:50 -0700 From: Marcel Moolenaar <xcllnt@mac.com> To: Maxim Sobolev <sobomax@FreeBSD.org> Cc: Nathan Whitehorn <nwhitehorn@FreeBSD.org>, freebsd-ppc@FreeBSD.org Subject: Re: Call for testers: Apple ATA DMA Message-ID: <645CD2B8-11A0-42E8-B5F9-C04DCF21F763@mac.com> In-Reply-To: <48D7F437.1040603@FreeBSD.org> References: "b9c23c9f0809100322n1659cb36oa05acf2f13f3c7e1@mail.gmail.com" <48D389EE.9000207@FreeBSD.org> <48D3AD50.8070505@freebsd.org> <48D69679.1080701@freebsd.org> <48D7F437.1040603@FreeBSD.org>
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On Sep 22, 2008, at 12:38 PM, Maxim Sobolev wrote: > Nathan Whitehorn wrote: >> Nathan Whitehorn wrote: >>> Maxim Sobolev wrote: >>>> Nathan, >>>> >>>> Do you have any news regarding the patch in question? I hope you >>>> did not give up, the lack of ATA DMA support is IMHO probably the >>>> biggest issue for the FreeBSD on PowerMacs now. The hardware is >>>> very attractive for SOHO applications, so that having this >>>> feature is important. >>> Right now, modes up to WDMA2 work. The UDMA modes cause hangs for >>> reasons not entirely clear. I'm investigating it, but am in the >>> Netherlands at the moment and it will have to wait until I get back. >> I now have UDMA modes working on my Shasta controller -- there was >> a stupid bug where I forgot to set the device to accept transfers >> in the selected mode. Please give this patch a test: I expect that >> UDMA modes now work everywhere. >> http://people.freebsd.org/~nwhitehorn/apple-ata-dma.patch > > Nathan, > > The patch works here (G4 Mac Mini, 1.25GHz), however, I see some > weird things happening in the interrupt domain. Interesting. My G4 Mac Mini 1.5Ghz is hanging hard: : ad0: 76319MB <Seagate ST9808211A 3.07> at ata1-master UDMA100 acd0: DVDR <MATSHITACD-RW CW-8124/DACD> at ata1-slave UDMA33 *hang* Could be related... -- Marcel Moolenaar xcllnt@mac.com
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