Re: Who uses hdx=bswap or hdx=swapdata?

Russell King (rmk@arm.linux.org.uk)
Thu, 3 Jan 2002 22:41:43 +0000

On Thu, Jan 03, 2002 at 10:32:39PM +0000, Alan Cox wrote:
> > Is the hdx=bswap or hdx=swapdata option actually in use?
> > When is it needed?
>
> Certain M68K machines

Is this parameter actually used on these machines, or do we rely on
the code in atapi_{input,output}_bytes:

#if defined(CONFIG_ATARI) || defined(CONFIG_Q40)
if (MACH_IS_ATARI || MACH_IS_Q40) {
/* Atari has a byte-swapped IDE interface */
insw_swapw(IDE_DATA_REG, buffer, bytecount / 2);
return;
}
#endif /* CONFIG_ATARI */

and:

#if defined(CONFIG_ATARI) || defined(CONFIG_Q40)
if (MACH_IS_ATARI || MACH_IS_Q40) {
/* Atari has a byte-swapped IDE interface */
outsw_swapw(IDE_DATA_REG, buffer, bytecount / 2);
return;
}
#endif /* CONFIG_ATARI */

-- 
Russell King (rmk@arm.linux.org.uk)                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html


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