Date: Thu, 25 Sep 2008 13:21:52 -0500 From: Nathan Whitehorn <nwhitehorn@freebsd.org> To: Marco Trillo <marcotrillo@gmail.com> Cc: freebsd-ppc@freebsd.org Subject: Re: Call for testers: Apple ATA DMA Message-ID: <48DBD6C0.5070005@freebsd.org> In-Reply-To: <b9c23c9f0809240632h77f091dawe54887d0a7f51c1d@mail.gmail.com> References: <48D389EE.9000207@FreeBSD.org> <48D3AD50.8070505@freebsd.org> <48D69679.1080701@freebsd.org> <48D7F437.1040603@FreeBSD.org> <645CD2B8-11A0-42E8-B5F9-C04DCF21F763@mac.com> <48D84C12.7070207@freebsd.org> <0DD89065-9CF3-45E4-89A0-70D6BBB9621D@mac.com> <48D92D44.6080807@freebsd.org> <b9c23c9f0809240338g61e93beoba429ea319a9d56@mail.gmail.com> <48DA4037.9000508@freebsd.org> <b9c23c9f0809240632h77f091dawe54887d0a7f51c1d@mail.gmail.com>
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Marco Trillo wrote: > Hi, > > On Wed, Sep 24, 2008 at 3:27 PM, Nathan Whitehorn > <nwhitehorn@freebsd.org> wrote: >> Ugh. I really don't know, and am flying blind without hardware. If you >> disable ATAPI DMA or the macio controller, does ad0 at least work? >> -Nathan >> > > I reverted the ata_macio.c patch and now Kauai uses DMA just fine! ad0 > now works in UDMA100 mode without any errors :-) > > ata0 mem 0x20000-0x20fff,0x8800-0x88ff irq 24,12 on macio0 > ata0: [ITHREAD] > ata1: <Intrepid Kauai ATA Controller> mem 0xf5004000-0xf5007fff irq > 39,1 at device 13.0 on pci2 > ata1: [ITHREAD] > acd0: DVDR <HL-DT-ST RW/DVD GCC-4481B/2.05> at ata0-master BIOSPIO > ad0: 38166MB <Seagate ST340015A 3.01> at ata1-master UDMA100 > > And indeed the ad0 disk performance is much better. Thank you! > > So it looks like an ata_macio specific problem. Well I'm glad to hear that something works :) I just added in support for setting the timing correctly when the bus has multiple devices running at different speeds and also for programming reasonable PIO defaults for ata_macio. I hope the combination solves the problems seen by both you and Marcel, so more testing would be appreciated. As usual, the patch is here: http://people.freebsd.org/~nwhitehorn/apple-ata-dma.patch -Nathan
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