unexpected IO-APIC

[Juergen Rose <rose@rz.uni-potsdam.de>]

Hi,

I am working with linux-2.4.20-pre7 an a PC with an
ABIT-KX7-333-Motherboard. If I enable APIC and IOAPIC in the linux
configuration (in .config I found:
...
CONFIG_X86_GOOD_APIC=y
...
CONFIG_X86_UP_APIC=y
CONFIG_X86_UP_IOAPIC=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
...), the IRQ distribution looks nice
  0:     249823    IO-APIC-edge  timer
  1:      10200    IO-APIC-edge  keyboard
  2:          0          XT-PIC  cascade
  8:         13    IO-APIC-edge  rtc
  9:          0    IO-APIC-edge  acpi
 12:       5206    IO-APIC-edge  PS/2 Mouse
 14:       9521    IO-APIC-edge  ide0
 15:          7    IO-APIC-edge  ide1
 17:        190   IO-APIC-level  aic7xxx
 18:          8   IO-APIC-level  ide2
 19:       8819   IO-APIC-level  es1371, eth0
 21:          0   IO-APIC-level  usb-uhci, usb-uhci
NMI:          0 
LOC:     249762 
ERR:          0
MIS:          0
but I get problems (´mke2fs -c /dev/hde1´ gives endless 'lost
interrups') with the additional IDE controller (ide2,ide3) and the
following messages during booting:

enabled ExtINT on CPU#0
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
ENABLING IO-APIC IRQs
Setting 2 in the phys_id_present_map
...changing IO-APIC physical APIC ID to 2 ... ok.
init IO_APIC IRQs
 IO-APIC (apicid-pin) 2-0, 2-5, 2-11, 2-20, 2-22, 2-23 not connected.
..TIMER: vector=0x31 pin1=2 pin2=0
number of MP IRQ sources: 22.
number of IO-APIC #2 registers: 24.
testing the IO APIC.......................

IO APIC #2......
.... register #00: 02000000
.......    : physical APIC id: 02
.... register #01: 00178002
.......     : max redirection entries: 0017
.......     : PRQ implemented: 1
.......     : IO APIC version: 0002
 WARNING: unexpected IO-APIC, please mail
          to linux-smp@vger.kernel.org
.... IRQ redirection table:
 NR Log Phy Mask Trig IRR Pol Stat Dest Deli Vect:   
 00 000 00  1    0    0   0   0    0    0    00
 01 001 01  0    0    0   0   0    1    1    39
 02 001 01  0    0    0   0   0    1    1    31
 03 001 01  0    0    0   0   0    1    1    41
 04 001 01  0    0    0   0   0    1    1    49
 05 000 00  1    0    0   0   0    0    0    00
 06 001 01  0    0    0   0   0    1    1    51
 07 001 01  0    0    0   0   0    1    1    59
 08 001 01  0    0    0   0   0    1    1    61
 09 001 01  0    0    0   0   0    1    1    69
 0a 001 01  1    1    0   1   0    1    1    71
 0b 000 00  1    0    0   0   0    0    0    00
 0c 001 01  0    0    0   0   0    1    1    79
 0d 001 01  0    0    0   0   0    1    1    81
 0e 001 01  0    0    0   0   0    1    1    89
 0f 001 01  0    0    0   0   0    1    1    91
 10 001 01  1    1    0   1   0    1    1    99
 11 001 01  1    1    0   1   0    1    1    A1
 12 001 01  1    1    0   1   0    1    1    A9
 13 001 01  1    1    0   1   0    1    1    B1
 14 000 00  1    0    0   0   0    0    0    00
 15 001 01  1    1    0   1   0    1    1    B9
 16 000 00  1    0    0   0   0    0    0    00
 17 000 00  1    0    0   0   0    0    0    00
IRQ to pin mappings:
IRQ0 -> 0:2
IRQ1 -> 0:1
IRQ3 -> 0:3
IRQ4 -> 0:4
IRQ6 -> 0:6
IRQ7 -> 0:7
IRQ8 -> 0:8
IRQ9 -> 0:9
IRQ10 -> 0:10
IRQ12 -> 0:12
IRQ13 -> 0:13
IRQ14 -> 0:14
IRQ15 -> 0:15
IRQ16 -> 0:16
IRQ17 -> 0:17
IRQ18 -> 0:18
IRQ19 -> 0:19
IRQ21 -> 0:21
.................................... done.
Using local APIC timer interrupts.
calibrating APIC timer ...
..... CPU clock speed is 1534.0355 MHz.
..... host bus clock speed is 266.7888 MHz.
cpu: 0, clocks: 2667888, slice: 1333944
CPU0<T0:2667888,T1:1333936,D:8,S:1333944,C:2667888>

If I disable APIC and IOAPIC, I have five devices (iac7xxx, usb-uhci,
usb-uhci, es1371, eth0) controlled by by IRQ11, but everythings seems to
work perfectly.

	With best regards
		Juergen