From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: PnP driver <mkrameshid@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Calling PnP bios routines like get device node from x86_84 arch
Date: Mon, 10 Sep 2007 17:33:44 +0100 [thread overview]
Message-ID: <20070910173344.4bd2ae9e@the-village.bc.nu> (raw)
In-Reply-To: <12594726.post@talk.nabble.com>
On Mon, 10 Sep 2007 08:06:20 -0700 (PDT)
PnP driver <mkrameshid@gmail.com> wrote:
>
> Hi,
> I am very new to linux kernel driver development. I need to develop a
> driver for calling BIOS routines like get device node. I could call it
> in i386 architecture using the PnP driver.
We use ACPI on AMD64 so you should be parsing the ACPI tables not trying
to rely on legacy interfaces which if I rememeber the spec rightly aren't
even guaranteed safe to call when ACPI is active.
What are you actually trying to achieve.
> But in x86_64 arch I couldn't see any support. Even I tried to
> implement it similar to the i386. But there is no API get_cpu_gdt_table().
> Is there any other way to get the cpu_gdt_table? or any other way to
> call the BIOS routines.
Assuming you even have a BIOS - you may have EFI underlying or
Linuxbios or be a virtual machine.
next prev parent reply other threads:[~2007-09-10 16:26 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-10 15:06 PnP driver
2007-09-10 16:33 ` Alan Cox [this message]
2007-09-11 11:03 ` mkrameshid
2007-09-11 9:51 ` Alan Cox
2007-09-11 15:38 ` mkrameshid
2007-09-11 15:48 ` mkrameshid
2007-09-11 10:38 ` Alan Cox
2007-09-11 21:17 ` Calling PnP bios routines like get device node from x86_64 arch mkrameshid
2007-09-12 10:51 ` Calling PnP bios routines like get device node from x86_84 arch mkrameshid
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