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Date:      Thu, 8 Jul 2004 01:17:26 -0700
From:      Avleen Vig <lists-freebsd@silverwraith.com>
To:        freebsd-hackers@freebsd.org
Subject:   Adding DMA support for a device
Message-ID:  <20040708081726.GD5238@silverwraith.com>

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I have a DVD drive which is recognised by FreeBSD:
  acd0: DVD-R <DVD-RW IDE1004> at ata1-slave PIO4

The drive supports DMA, and Windows sets it to use UDMA mode 5 (I
think), but BSD does not.
I am assume because the device is not listed as supported correct
driver?
I had a look in ata-dma.c but that file seems to be for controllers
rather than devices.

Can anyone point me in the right direction for this?

-- 
Avleen Vig
Systems Administrator
Personal: www.silverwraith.com
EFnet:    irc.mindspring.com (Earthlink user access only)



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