2.0.34 SMP IRQ detection problem

Keith Owens (kaos@ocs.com.au)
Sat, 06 Jun 1998 09:31:16 +1000


ne.o does not autodetect IRQ on 2.0.34 SMP with both processors
installed.

Stock 2.0.34 on ASUS P/I-P65UP5 M/B with dual P166. ISA NE2000 clone,
ne.o compiled as a module. modutils 2.1.85.

"/sbin/modprobe ne io=0x300" works for 2.1.10x SMP, 2.0.31 UP, it even
works for 2.0.34 SMP with only one processor installed. On 2.0.34 SMP
with both processors installed, it does not detect the IRQ. Forcing
the IRQ with "/sbin/modprobe ne io=0x300 IRQ=15" works for 2.0.34 SMP.

2.0.34 SMP, both processors installed, /sbin/modprobe ne io=0x300 gives

Checking 386/387 coupling... Ok, fpu using exception 16 error reporting.
Checking 'hlt' instruction... Ok.
Intel Pentium with F0 0F bug - workaround enabled.
alias mapping IDT readonly ... ... done
Linux version 2.0.34 (keith@ocs4) (gcc version 2.7.2.3) #3 Fri Jun 5 18:28:12 EST 1998
Booting processor 1 stack 00002000: Calibrating delay loop.. ok - 66.36 BogoMIPS
Total of 2 processors activated (132.71 BogoMIPS).
...
loading device 'eth0'...
ne.c:v1.10 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)
NE*000 ethercard probe at 0x300: failed to detect IRQ line.
ne.c: No NE*000 card found at i/o = 0x300

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