Date: 07 Dec 1999 02:14:34 -0500 From: Randell Jesup <rjesup@wgate.com> To: Egervary Gergely <mauzi@faber.poli.hu>, freebsd-hackers@freebsd.org Subject: Re: cdrom speed adjustment ioctl Message-ID: <ybuyab7dxyd.fsf@jesup.eng.tvol.net.jesup.eng.tvol.net> In-Reply-To: Egervary Gergely's message of "Mon, 6 Dec 1999 14:59:08 %2B0100 (CET)"
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Egervary Gergely <mauzi@faber.poli.hu> writes:
>> I've just hacked a new ioctl into the ATAPI cdrom driver, which
>> lets the user to specify (pronounce: ``slow down'' :) the speed
>> of todays' extremely high speed drives.
>
>ok, so i see you like the idea - so the question is: should we implement a
>new ioctl for it, or - as like scsi - should we use a program like
>camcontrol for it?
One solution I used in the past (Amiga) was to implement the
ATA (and ATAPI) support by writing the equivalent of SCSI CAM SIM;
that is a SIM that actually controlled IDE hardware instead of SCSI
hardware. This is quite easy, in fact, especially since ATAPI is
basically SCSI-over-IDE with a few twists.
--
Randell Jesup, Worldgate Communications, ex-Scala, ex-Amiga OS team ('88-94)
rjesup@wgate.com
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