Date: Tue, 4 Sep 2001 09:02:40 +0200 (CEST) From: Søren Schmidt <sos@freebsd.dk> To: David Gilbert <dgilbert@velocet.ca> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Promise ATA attaches UDMA66, but not UDMA33 Message-ID: <200109040703.f8473fY02926@freebsd.dk> In-Reply-To: <15252.9563.895072.420187@trooper.velocet.net> "from David Gilbert at Sep 3, 2001 08:50:35 pm"
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It seems David Gilbert wrote: > I've got a promise ATA-66 controller. According to it's bios screen, > the hard drives attached to it are UDMA-4 and the two CD-type devices > are UDMA-2. All four devices are attached with ATA-66 cabling. I > also have "hw.ata.atapi_dma=1" in loader.conf. > > I get the following probe: > > ad6: 39266MB <IBM-DTLA-305040> [79780/16/63] at ata3-master UDMA66 > ad7: 39266MB <IBM-DTLA-305040> [79780/16/63] at ata3-slave UDMA66 > acd0: DVD-ROM <TOSHIBA DVD-ROM SD-M1502> at ata2-master using PIO4 > acd1: CD-RW <CD-W512EB> at ata2-slave using PIO4 > > Is the driver possibly not recognising the UDMA2 state from the > controller? The Promise controllers doesn't support ATAPI DMA, or at least the older ones didn't, and some require special code, however the newer ones (TX2) should support it. I have this on my list for the newer Promises, watch -current for when it hits the tree... -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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