From: Johan Kullstam <kullstj-ml@attbi.com>
To: linux-kernel@vger.kernel.org
Subject: Re: Problem with IO/APIC
Date: 30 Sep 2002 20:44:20 -0400 [thread overview]
Message-ID: <m27kh3f0nv.fsf@euler.axel.nom> (raw)
In-Reply-To: <Pine.LNX.4.33.0209301832260.24035-100000@hytron.hytron.net>
Darko <hytron@hytron.net> writes:
> Hi everyone!
>
> I am having some problems to get APIC to work. My system is running linux
> kernel v2.4.19 compiled for uniprocessor with APIC enabled. The CPU is AMD
> XP 1600+ and motherboard MSI with north bridge KT133A, and south bridge
> VT82C686B). On VIA's web site, they show APIC integrated in the south
> bridge. My BIOS offeres two features:
> - Use APIC - this is enabled
> - MPS version control for OS - this is set to 1.1, but it should not
> effect in any way, since this is a uniprocessor sistem, right?
>
> The system boots just fine, but I have same IRQs that are shared among
> devices. Here is the /proc/interrupts
> CPU0
> 0: 25475 IO-APIC-edge timer
> 1: 3 IO-APIC-edge keyboard
> 2: 0 XT-PIC cascade
> 8: 1 IO-APIC-edge rtc
> 10: 1153 IO-APIC-level via82cxxx, eth0
> 11: 2796 IO-APIC-level ide2, ide3
> 12: 0 IO-APIC-edge PS/2 Mouse
> 14: 2441 IO-APIC-edge ide0
> 15: 2879 IO-APIC-edge ide1
> NMI: 0
> LOC: 25428
> ERR: 0
> MIS: 0
>
> I am not sure if this means that it is currently using the APIC or
> not,
Yes, it is using the APIC. You can see that by the "LOC" line. Also
you have IO-APIC as seen by IO-APIC-level/edge. Btw level interrupts
can be shared. While it's annoying to see stuff share, i don't think
it really matters much. My boxen share IRQs even though I have plenty
of free interrupts. Sometimes you can ask the bios to reassign things.
> but I can never get IRQs 16-23 to get assigned to any of the cards. I
> tried using pirq= , but still doesn't work Here is part from dmesg that
> gives some info:
I have an ASUS A7M266D. It's a dual board with AMD chipset, but yours
might be similar. I had to use MPS v1.4 to get it to map high IRQs.
I've got an old quad ppro and it never uses high IRQs.
dual AMD
jk@sophia:~$ cat /proc/interrupts
CPU0 CPU1
0: 282277 242808 IO-APIC-edge timer
1: 392 443 IO-APIC-edge keyboard
2: 0 0 XT-PIC cascade
9: 0 0 IO-APIC-edge acpi
17: 7040 7341 IO-APIC-level aic7xxx, cmpci
18: 3772 3755 IO-APIC-level eth0
NMI: 0 0
LOC: 525003 525001
ERR: 0
MIS: 0
quad PPRO
euler(jk)$ cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 9176661 8955067 8291155 8074980 IO-APIC-edge timer
1: 27293 26827 26057 26434 IO-APIC-edge keyboard
2: 0 0 0 0 XT-PIC cascade
3: 507146 480679 464739 509153 IO-APIC-edge serial
5: 6552 6236 6384 6403 IO-APIC-edge soundblaster
12: 686549 687806 686945 685721 IO-APIC-level eth0, PS/2 Mouse
14: 7 8 8 7 IO-APIC-level sym53c8xx
15: 380622 379376 378306 379596 IO-APIC-level sym53c8xx
NMI: 0 0 0 0
LOC: 34498270 34498324 34498324 34498322
ERR: 0
MIS: 5
> Linux version 2.4.20-pre8 (root@commodore) (gcc version 2.95.3 20010315
> (release)) #4 Mon Sep 30 18:21:27 EDT 2002
> BIOS-provided physical RAM map:
> BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
> BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
> BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
> BIOS-e820: 0000000000100000 - 0000000010000000 (usable)
> BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
> 256MB LOWMEM available.
> found SMP MP-table at 000f5ec0
> hm, page 000f5000 reserved twice.
> hm, page 000f6000 reserved twice.
> hm, page 000f1000 reserved twice.
> hm, page 000f2000 reserved twice.
> On node 0 totalpages: 65536
> zone(0): 4096 pages.
> zone(1): 61440 pages.
> zone(2): 0 pages.
> Intel MultiProcessor Specification v1.1
> Virtual Wire compatibility mode.
> OEM ID: OEM00000 Product ID: PROD00000000 APIC at: 0xFEE00000
> Processor #0 Pentium(tm) Pro APIC version 17
> I/O APIC #2 Version 17 at 0xFEC00000.
> Processors: 1
> Kernel command line: auto BOOT_IMAGE=Linux ro root=900 hda=4865,255,63
> hdc=4865,255,63 hde=4865,255,63 pirq=5,11,10
> ide_setup: hda=4865,255,63
> ide_setup: hdc=4865,255,63
> ide_setup: hde=4865,255,63
> PIRQ redirection, working around broken MP-BIOS.
> ... PIRQ0 -> IRQ 5
> ... PIRQ1 -> IRQ 11
> ... PIRQ2 -> IRQ 10
> Initializing CPU#0
> Detected 1394.448 MHz processor.
> Console: colour VGA+ 80x25
> Calibrating delay loop... 2778.72 BogoMIPS
> Memory: 256580k/262144k available (1361k kernel code, 5176k reserved, 593k
> data, 96k init, 0k highmem)
> Dentry cache hash table entries: 32768 (order: 6, 262144 bytes)
> Inode cache hash table entries: 16384 (order: 5, 131072 bytes)
> Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
> Buffer-cache hash table entries: 16384 (order: 4, 65536 bytes)
> Page-cache hash table entries: 65536 (order: 6, 262144 bytes)
> CPU: Before vendor init, caps: 0383fbff c1cbfbff 00000000, vendor = 2
> CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
> CPU: L2 Cache: 256K (64 bytes/line)
> CPU: After vendor init, caps: 0383fbff c1cbfbff 00000000 00000000
> Intel machine check architecture supported.
> Intel machine check reporting enabled on CPU#0.
> CPU: After generic, caps: 0383fbff c1cbfbff 00000000 00000000
> CPU: Common caps: 0383fbff c1cbfbff 00000000 00000000
> CPU: AMD Athlon(tm) XP 1600+ stepping 02
> Enabling fast FPU save and restore... done.
> Enabling unmasked SIMD FPU exception support... done.
> Checking 'hlt' instruction... OK.
> POSIX conformance testing by UNIFIX
> 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, 2-16, 2-17, 2-18, 2-19, 2-20, 2-21, 2-22, 2-23
> not connected.
> ..TIMER: vector=0x31 pin1=2 pin2=0
> 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: 00178011
> ....... : max redirection entries: 0017
> ....... : PRQ implemented: 1
> ....... : IO APIC version: 0011
> .... register #02: 00000000
> ....... : arbitration: 00
> .... 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
> ......
> ......
> 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.
Yes you have both IO-APIC and local APIC!
--
Johan KULLSTAM
prev parent reply other threads:[~2002-10-01 0:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-30 22:45 Problem with IO/APIC Darko
2002-10-01 0:44 ` Johan Kullstam [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=m27kh3f0nv.fsf@euler.axel.nom \
--to=kullstj-ml@attbi.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.