* quirk_via_ioapic
@ 2002-12-01 0:13 Thorbjørn Lind
0 siblings, 0 replies; only message in thread
From: Thorbjørn Lind @ 2002-12-01 0:13 UTC (permalink / raw)
To: linux-kernel
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
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2002-12-01 0:13 quirk_via_ioapic Thorbjørn Lind
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