Date: Fri, 08 Jun 2007 11:22:13 -0600 From: Scott Long <scottl@samsco.org> To: Tom Evans <tevans.uk@googlemail.com> Cc: freebsd-current@freebsd.org Subject: Re: ATAPI DVD writer wont operate in DMA mode Message-ID: <46699045.6080003@samsco.org> In-Reply-To: <1181319706.48432.33.camel@localhost> References: <1181319706.48432.33.camel@localhost>
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Is this device attached via SATA or IDE? If it's SATA, then no, the driver doesn't support SATA-ATAPI + DMA. Scott Tom Evans wrote: > Hi was hoping someone could help me get my DVD writer operating in DMA. > Trying to set the mode with atacontrol succeeds, but only sets the mode > to WDMA, which is hardly better than PIO. > > I tried tracing through the DMA initialisation in sys/dev/ata/ata-pci.c, > but I got lost I'm afraid. > > Here is pertinent information: > > uname -a: > FreeBSD zoot.mintel.co.uk 7.0-CURRENT FreeBSD 7.0-CURRENT #1: > Tue Jun 5 14:39:27 BST 2007 (sources synched ~5 hrs prior to this) > root@zoot.mintel.co.uk:/usr/obj/usr/src/sys/ZOOT i386 > > dvd device: > acd0: DVDR <MATSHITADVD-RAM UJ-840S/1.11> at ata0-master > > ata controller: > atapci0@pci0:31:1: class=0x01018a card=0x30aa103c chip=0x27df8086 > rev=0x01 hdr=0x00 > device = '82801G (ICH7 Family) Ultra ATA Storage Controller' > > dmesg.boot: attached (sorry, not verbose, can get verbose if reqd) > > pciconf -lv: attached > > sysctl hw.ata: > hw.ata.wc: 1 > hw.ata.atapi_dma: 1 > hw.ata.ata_dma: 1 > (Set via /boot/loader.conf) > > atacontrol cap acd0: > > Protocol ATA/ATAPI revision 6 > device model MATSHITADVD-RAM UJ-840S > serial number > firmware revision 1.11 > cylinders 0 > heads 0 > sectors/track 0 > lba supported > lba48 not supported > dma supported > overlap not supported > > Feature Support Enable Value Vendor > write cache no no > read ahead no no > Tagged Command Queuing (TCQ) no no 0/0x00 > SMART no no > microcode download no no > security no no > power management no no > advanced power management no no 0/0x00 > automatic acoustic management no no 0/0x00 0/0x00 > > TIA > > Tom >
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