From: "Thorbjørn Lind" <mtl@slowbone.net>
To: <linux-kernel@vger.kernel.org>
Subject: quirk_via_ioapic
Date: Sun, 1 Dec 2002 01:13:10 +0100 [thread overview]
Message-ID: <018501c298ce$6e4e10d0$0201a8c0@mtl> (raw)
Performs the following code when io_apic is enabled.
tmp = 0x1f;
pci_write_config_byte (dev, 0x58, tmp);
Which happens to be a bad idea(tm) on my Tyan Tiger 230T (Via 691+686 chipset) because it will cause
one of the upper IRQ lines (>15) to trigger about 10M times / minute. In this case it's the ide
controller, but is seen on other devices too.
Things sortof work w/o the quirk.
What is going on here ? :)
leeloo:~# cat /proc/interrupts...
17: 0 IO-APIC-level Ensoniq AudioPCI
19: 12 IO-APIC-level ide2
...
Pretending to use the quirk....
leeloo:~# pcitweak -w 0:7:0 -b 0x58 0x1f
And just a few seconds later...
leeloo:~# cat /proc/interrupts
...
17: 0 IO-APIC-level Ensoniq AudioPCI
19: 2007685 IO-APIC-level ide2
reply other threads:[~2002-12-01 0:05 UTC|newest]
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