According to the ACPI of the board, uart0 and uart 2
use IRQ 3 and
IRQ (Edge, ActiveLow, Shared, )
{3}
uart1 and uart3 use IRQ 4
IRQ (Edge, ActiveLow, Shared, )
{4}
ioapic_config_intr is called with trig == INTR_TRIGGER_EDGE and
pol == INTR_POLARITY_LOW.
The combinatation of Edge and ActiveLow seems kind of broken.
Forcing the polarity in ioapic_config_intr to INTR_POLARITY_HIGH
and disabling uart 2 and uart 3 results in two working serial
interfaces.
So what is the correct fix to this?
Regards
Juergen Weiss
Juergen Weiss |Universitaet Mainz, Zentrum fuer Datenverarbeitung,
we...@uni-mainz.de |55099 Mainz, Tel: +49(6131)39-26361, FAX: +49(6131)39-26407
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