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

From: Russell King (rmk@arm.linux.org.uk)
Date: Thu Jan 03 2002 - 17:41:43 EST

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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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