linux-kernel - Re: [PATCH] m68k/mac: Replace macide driver with generic platform driver

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Message-ID: <CAMuHMdUy_B_+pHZQpnDHYsee+gpXOs9ek_HaVxLjE2HVfGmLQg@mail.gmail.com>
Date:   Wed, 28 Apr 2021 08:53:33 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Michael Schmitz <schmitzmic@...il.com>
Cc:     Finn Thain <fthain@...tmail.com.au>,
        John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
        Christoph Hellwig <hch@....de>,
        Joshua Thompson <funaho@...ai.org>,
        "David S. Miller" <davem@...emloft.net>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-ide@...r.kernel.org
Subject: Re: [PATCH] m68k/mac: Replace macide driver with generic platform driver

Hi Michael,

On Tue, Apr 27, 2021 at 9:55 PM Michael Schmitz <schmitzmic@...il.com> wrote:
> On 27/04/21 3:47 pm, Finn Thain wrote:
> > On Tue, 27 Apr 2021, Michael Schmitz wrote:
> >> On 26/04/21 7:37 pm, Finn Thain wrote:
> >>> Was macide the only IDE driver in Debian/m68k kernels without a libata
> >>> alternative? If so, this patch would allow you to finally drop
> >>> CONFIG_IDE.
> >>>
> >> There's still q40ide.c (ISA IDE interface, byte-swapped, so would need
> >> treatment similar to Falcon IDE). Hasn't been updated to a platform
> >> device yet.
> >>
> > AIUI, q40 support is not included in Debian/m68k kernel builds.
> I see.
> > I wonder whether q40 could re-use the pata_falcon driver . I suppose
>
> I'm pretty sure it could, but there is no reason why it would have to be
> crippled in that way. Interrupts should work perfectly fine with IDE on
> Q40.
>
> There is another reason why using the same module binary for both might
> fail - the awkward address translation code in io_mm.h. Not certain at
> all whether we can even have Q40 and Atari in the same kernel binary...

That's supposed to work, else our multi_defconfig is broken.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds