Re: CDROM_SELECT_SPEED interface problem
James Mastros (root@jennifer-unix.dyn.ml.org)
Wed, 18 Mar 1998 16:45:57 -0500 (EST)
On Wed, 18 Mar 1998, Erik Andersen wrote:
[...]
> I propose that the CDROM_SELECT_SPEED ioctl be modified as follows:
>
> ...The value of speed specifies the head-speed of the
> drive, measured in units of kB/sec. So to request that a cdrom drive
> operate at 706 kB/sec you would call the CDROM_SELECT_SPEED ioctl
> with speed=706. The special value `0' means set the drive speed to
> the maximum the drive supports. Additionally, all values below
> 100 (but greater then 0) shall be treated as requests to set the
> speed based on units of standard cdrom speed (177 kB/sec*speed).
> To request that a cdrom drive operate at 354 kB/sec you could call
> the CDROM_SELECT_SPEED ioctl with speed=2. Note that this special
> interface for speed less then 100 is depricated, and may go away
> in some future kernel release.
>
> How does this sound to everybody? Ok? Workable? Broken?
Hmm... I supose that by the time we get 100x CDROMs, everybody will be using
the raw speed <G>, and that nobody is going to want to run a cdrom at under
.56x (even if you can find a drive that supports it) <G>. Slightly less
broken then before, but we have to maintain compatiblity... sigh.
-=- James Mastros
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu