From: Russell King <rmk@arm.linux.org.uk>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Manfred Spraul <manfred@colorfullife.com>, linux-kernel@vger.kernel.org
Subject: Re: Who uses hdx=bswap or hdx=swapdata?
Date: Thu, 3 Jan 2002 22:41:43 +0000 [thread overview]
Message-ID: <20020103224143.D13173@flint.arm.linux.org.uk> (raw)
In-Reply-To: <3C34D6FC.9090207@colorfullife.com> <E16MGPf-0001I3-00@the-village.bc.nu>
In-Reply-To: <E16MGPf-0001I3-00@the-village.bc.nu>; from alan@lxorguk.ukuu.org.uk on Thu, Jan 03, 2002 at 10:32:39PM +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
next prev parent reply other threads:[~2002-01-03 22:42 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-03 22:11 Who uses hdx=bswap or hdx=swapdata? Manfred Spraul
2002-01-03 22:17 ` Cort Dougan
2002-01-03 22:32 ` Alan Cox
2002-01-03 22:41 ` Russell King [this message]
2002-01-04 9:09 ` Geert Uytterhoeven
2002-01-04 9:31 ` Chris Lawrence
2002-01-04 10:37 ` Alan Cox
2002-01-04 10:56 ` Geert Uytterhoeven
2002-01-04 17:15 ` Michael Schmitz
2002-01-04 17:20 ` Geert Uytterhoeven
2002-01-04 22:51 ` Richard Zidlicky
2002-01-04 18:43 ` Bernd Eckenfels
2002-01-12 22:40 ` Manfred Spraul
2002-01-13 11:19 ` Geert Uytterhoeven
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