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Re: [PATCH] Import updates from i386's i8259.c

To: "Maciej W. Rozycki" <macro@linux-mips.org>
Subject: Re: [PATCH] Import updates from i386's i8259.c
From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Date: Wed, 06 Dec 2006 18:12:44 +0300
Cc: Ingo Molnar <mingo@redhat.com>, anemo@mba.sphere.ne.jp, Ralf Baechle <ralf@linux-mips.org>, linux-mips@linux-mips.org
In-reply-to: <Pine.LNX.4.64N.0612061438440.29000@blysk.ds.pg.gda.pl>
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References: <20061206.103923.71086192.nemoto@toshiba-tops.co.jp> <20061206015818.GB27985@linux-mips.org> <20061206.115602.63741871.nemoto@toshiba-tops.co.jp> <20061206.133836.89067271.nemoto@toshiba-tops.co.jp> <4576C2E9.4060900@ru.mvista.com> <Pine.LNX.4.64N.0612061337220.29000@blysk.ds.pg.gda.pl> <4576CB64.2060705@ru.mvista.com> <Pine.LNX.4.64N.0612061438440.29000@blysk.ds.pg.gda.pl>
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Hello.

Maciej W. Rozycki wrote:

And with the "IO-APIC-edge" and "IO-APIC-level" alternatives back when the
concept of IRQ controllers was introduced, "XT-PIC" rather than "8259A"
sounded quite right.

  I don't follow you here.

These were the three first names of interrupt controllers introduced back in 2.1 and the names chosen looked consistent.

   I'd say they *only* looked consistent then. :-)
In fact, i8259.c is driving two coupled together 8259 chips, so using the word "XT" in this context was absolutely wrong.
   As for the I/O APIC, I think i82903AA was "the reference design" for it...

  Maciej

WBR, Sergei

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