cHitman <[email protected]> wrote:
> This patch implements changing of DVD speed via ioctl() call, like
> CDROM_SELECT_SPEED do. In CDROM_SELECT_SPEED its implementation isn't
> so good (diffirent values of 1x in KB/s, troubles with return value of
> cdrom_select_speed() and other). I defined CDROM_SELECT_DVDSPEED ioctl
> () call with value 0x5324. But some dvdroms (like Plexter) do not
> support this feature.. :(
Introducing another device-specific IOCTL because the other device-specific
request turned out to be wrong is likely to be wrong, too.
> req.sense = sense;
> - if (speed == 0)
> + if (speed <= 0)
> speed = 0xffff; /* set to max */
> else
> speed *= 177; /* Nx to kbytes/s */
The parameter value should IMHO be a pointer to a struct {
unsigned long long maxspeed; // (with 0 being the magic max. value?)
int facility; /* 0=general speed, 2=general read, 4=read data,
6=read audio, 8=read raw ... whatever is supported
n+1 = s/read/write/ */
}
That will work for any device and speed you can expect in the near future.
> +static int cdrom_select_dvd_speed(ide_drive_t *drive, int speed,
> + struct request_sense *sense)
> +{
> + struct request req;
> + struct request_sense cap_sense;
> + unsigned char pd[28];
> + unsigned long cap, spf;
> +
> + if (!CDROM_CONFIG_FLAGS(drive)->dvd)
> + return -ENOSYS;
EINVAL?
--
Ich danke GMX dafür, die Verwendung meiner Adressen mittels per SPF
verbreiteten Lügen zu sabotieren.
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