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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Iain Sandoe <iain@sandoe.co.uk>
Cc: linuxppc-dev <linuxppc-dev@lists.linuxppc.org>,
	Takashi Oe <toe@unlserve.unl.edu>,
	Kostas Gewrgiou <gewrgiou@imbc.gr>
Subject: Re: Sound stoppage
Date: Wed, 28 Mar 2001 15:17:34 +0200	[thread overview]
Message-ID: <20010328131734.25918@mailhost.mipsys.com> (raw)
In-Reply-To: <20010328091553.4B07DDB9FC@atlas.valhalla.net>


>
>The MacOS extension patch fixes a "PCI timing problem" - specifically
>claimed to stop PCI-based-IDE/Sound interaction (which is what we are
>seeing).

I quickly disassembled the extension, what it does is to write

  0x00000858 (swapped) -> 0xf2800000
  0x12 (byte)          -> 0xf2c00000

Which is basically writing 0x12 to byte at address 0x58 of Bandit
PCI bridge config space.

Now we need to figure out how to identify this machine/bandit model to
make sure we don't scew up bandit on another box.

Can someone try to figure out in the device-tree if there's anything like
a machine ID ? (the "old" mac-os like box ID is 0x66 I think, but I don't
know if it can be found in the device tree. It may be available via mother
board straps around 0xf3000000 however).

I'd also like to know the bandit deviceID & revisionID in it's PCI config
space.

Ben.


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

  reply	other threads:[~2001-03-28 13:17 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-03-28  9:15 Sound stoppage Iain Sandoe
2001-03-28 13:17 ` Benjamin Herrenschmidt [this message]
  -- strict thread matches above, loose matches on Subject: below --
2001-04-01 11:02 Iain Sandoe
2001-03-29 10:05 Iain Sandoe
2001-03-29 10:25 ` Takashi Oe
2001-03-29 13:47   ` Michael R. Zucca
2001-03-28 14:28 Iain Sandoe
2001-03-28 22:04 ` Takashi Oe
2001-03-28  9:23 Iain Sandoe
2001-03-28  7:06 Iain Sandoe
2001-03-28  9:09 ` Kostas Gewrgiou
2001-03-28 21:31 ` Takashi Oe
2001-04-01  4:01   ` Michael R. Zucca
2001-03-27 21:31 Iain Sandoe
2001-03-27 23:35 ` Takashi Oe
2001-03-27 17:54 Iain Sandoe
2001-03-27 20:41 ` Takashi Oe
2001-03-27 15:14 Iain Sandoe
2001-03-27 16:32 ` Takashi Oe
2001-03-26  4:26 Iain Sandoe
2001-03-26  3:09 Michael R. Zucca
2001-03-26  3:22 ` Hollis R Blanchard
2001-03-27  9:58 ` phandel
2001-03-27 13:20   ` Michael R. Zucca
2001-03-27 14:30     ` Takashi Oe

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