From: Thomas Winischhofer <thomas@winischhofer.net>
To: Davide Libenzi <davidel@xmailserver.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: SiS USB IRQ (Was: [patch] sis650 irq router fix for 2.4.x)
Date: Tue, 27 May 2003 12:59:52 +0200 [thread overview]
Message-ID: <3ED34528.90702@winischhofer.net> (raw)
In-Reply-To: Pine.LNX.4.55.0305261431230.3000@bigblue.dev.mcafeelabs.com
Not relevant to the 650, but for the 630: Going through the datasheet
revealed that the 630 (with built-in Super South Bridge) does not know
register 0x62 (of the "ISA bridge", speak the irq router, 00:01.0,
1039:0008, revision 0) - it's reserved there, but the datasheets states
explicitly that bit 7 should be set to 1.
The USB interrupts and their routing is determined by bit 8 register
0x04 of the USB OHCI configuration space (00:01.2 and 00:01.3).
Perhaps some interrupt guru knows what to do with this information and
is able to verify that the current implementation does this right...
Thomas
--
Thomas Winischhofer
Vienna/Austria
thomas AT winischhofer DOT net *** http://www.winischhofer.net/
twini AT xfree86 DOT org
prev parent reply other threads:[~2003-05-27 10:46 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-26 13:55 [patch] sis650 irq router fix for 2.4.x Thomas Winischhofer
2003-05-26 17:20 ` Davide Libenzi
2003-05-26 21:52 ` Davide Libenzi
2003-05-27 9:11 ` Thomas Winischhofer
2003-05-27 17:06 ` Davide Libenzi
2003-05-27 16:45 ` Alan Cox
2003-05-27 17:53 ` Davide Libenzi
2003-05-27 20:45 ` Thomas Winischhofer
2003-05-27 20:42 ` Thomas Winischhofer
2003-05-27 20:51 ` Alan Cox
2003-05-27 22:48 ` Thomas Winischhofer
2003-05-27 22:29 ` Davide Libenzi
2003-05-27 22:55 ` Thomas Winischhofer
2003-05-27 22:58 ` Davide Libenzi
2003-05-27 10:59 ` Thomas Winischhofer [this message]
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