This is just a followup, if anyone cares. The problem is
probably _not_ in the APIC code but most probably it's
fucked up hardware. When any card, even ISA, is switched
to use IRQ 10 and APIC is enabled, it will cause thousands
of interrupts to be generated. Moving all cards from IRQ 10
to something else solved the problem completely. Yes,
even when APIC is enabled :)
adamm@polaris:/proc$ cat interrupts
CPU0 CPU1
0: 24768091 22109926 IO-APIC-edge timer
1: 3856 3201 IO-APIC-edge keyboard
2: 0 0 XT-PIC cascade
7: 0 0 IO-APIC-edge soundblaster
8: 15815 15414 IO-APIC-edge rtc
9: 1314813 1317096 IO-APIC-level ide2, ide3, sym53c8xx
12: 7903733 7886885 IO-APIC-level eth1, eth0
NMI: 0 0
LOC: 46877866 46877865
ERR: 0
MIS: 14052
- Adam
PS. This is for an old Compaq proliant 800 dual PPro but
it might be helpful to others.
On Mon, Nov 11, 2002 at 05:11:26PM -0600, Adam Majer wrote:
> On Mon, Nov 11, 2002 at 10:38:08PM +0000, Alan Cox wrote:
> > On Mon, 2002-11-11 at 19:26, adamm@galacticasoftware.com wrote:
> > > Hi all,
> > >
> > > There seems to be a major problem with the promise drivers.
> > > It is detected and seems to work, but there is a very
> > > large number of interrupts being generated:
> >
> > Im dubious those interrupts are coming from the TX2 - what happens if
> > you boot with the "noapic" option ?
>
> Yes, you are right. It is the APIC problem...
>
> polaris:/proc# cat interrupts
> CPU0 CPU1
> 0: 155563 0 XT-PIC timer
> 1: 2510 0 XT-PIC keyboard
> 2: 0 0 XT-PIC cascade
> 5: 3421 0 XT-PIC eth0
> 8: 23 0 XT-PIC rtc
> 9: 26243 0 XT-PIC sym53c8xx, eth1
> 10: 301052 0 XT-PIC ide2, ide3
> NMI: 0 0
> LOC: 155501 155500
> ERR: 1427
> MIS: 0
>
>
> I'm not sure if the following will make the problem abvious
> for people that know anything about the APIC, but here it goes.
> The following are the relevant boot message for APIC. It was fine with
> all of the cards in there except for that Promise controller.
> Maybe the interrupt should have triggered on edge not on level?
>
> PS. This is for 2.4.18 kernel
>
> dmesg snip:
>
> Intel MultiProcessor Specification v1.4
> Virtual Wire compatibility mode.
> OEM ID: COMPAQ Product ID: PROLIANT APIC at: 0xFEE00000
> Processor #1 Pentium(tm) Pro APIC version 16
> Processor #0 Pentium(tm) Pro APIC version 16
> I/O APIC #2 Version 17 at 0xFEC00000.
>
> [...]
>
> 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, 2-16, 2-17, 2-18, 2-19, 2-20, 2-21, 2-22, 2-23 not connected.
> ..TIMER: vector=0x31 pin1=2 pin2=0
> ..MP-BIOS bug: 8254 timer not connected to IO-APIC
> ...trying to set up timer (IRQ0) through the 8259A ...
> ..... (found pin 0) ...works.
> number of MP IRQ sources: 16.
> number of IO-APIC #2 registers: 24.
> testing the IO APIC.......................
>
> IO APIC #2......
> .... register #00: 02000000
> ....... : physical APIC id: 02
> .... register #01: 00170011
> ....... : max redirection entries: 0017
> ....... : PRQ implemented: 0
> ....... : IO APIC version: 0011
> .... register #02: 00000000
> ....... : arbitration: 00
> .... IRQ redirection table:
> NR Log Phy Mask Trig IRR Pol Stat Dest Deli Vect:
> 00 003 03 0 0 0 0 0 1 1 31
> 01 003 03 0 0 0 0 0 1 1 39
> 02 000 00 1 0 0 0 0 0 0 00
> 03 003 03 0 0 0 0 0 1 1 41
> 04 003 03 0 0 0 0 0 1 1 49
> 05 003 03 1 1 0 1 0 1 1 51
> 06 003 03 0 0 0 0 0 1 1 59
> 07 003 03 0 0 0 0 0 1 1 61
> 08 003 03 0 0 0 0 0 1 1 69
> 09 003 03 1 1 0 1 0 1 1 71
> 0a 003 03 1 1 0 1 0 1 1 79
> 0b 003 03 0 0 0 0 0 1 1 81
> 0c 003 03 0 0 0 0 0 1 1 89
> 0d 003 03 0 0 0 0 0 1 1 91
> 0e 003 03 0 0 0 0 0 1 1 99
> 0f 003 03 0 0 0 0 0 1 1 A1
> 10 000 00 1 0 0 0 0 0 0 00
> 11 000 00 1 0 0 0 0 0 0 00
> 12 000 00 1 0 0 0 0 0 0 00
> 13 000 00 1 0 0 0 0 0 0 00
> 14 000 00 1 0 0 0 0 0 0 00
> 15 000 00 1 0 0 0 0 0 0 00
> 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
> IRQ5 -> 0:5
> IRQ6 -> 0:6
> IRQ7 -> 0:7
> IRQ8 -> 0:8
> IRQ9 -> 0:9
> IRQ10 -> 0:10
> IRQ11 -> 0:11
> IRQ12 -> 0:12
> IRQ13 -> 0:13
> IRQ14 -> 0:14
> IRQ15 -> 0:15
> .................................... done.
> Using local APIC timer interrupts.
> calibrating APIC timer ...
> ..... CPU clock speed is 179.6287 MHz.
> ..... host bus clock speed is 59.8760 MHz.
> cpu: 0, clocks: 598760, slice: 199586
> CPU0<T0:598752,T1:399152,D:14,S:199586,C:598760>
> cpu: 1, clocks: 598760, slice: 199586
> CPU1<T0:598752,T1:199568,D:12,S:199586,C:598760>
> checking TSC synchronization across CPUs: passed.
> Waiting on wait_init_idle (map = 0x2)
> All processors have done init_idle
>
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