what is pci=biosirq

From: xcp (xcp@brewt.org)
Date: Sat Mar 31 2001 - 21:37:41 EST

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    I have an ALi chipset motherboard that seems to function normally. K6-2
    450, 256mb ram, 20gb ide fujitsu hard disk. Every time I boot up I get
    this unsettling message about PCI: No IRQ known for interrupt pin A of
    device 00:0f.0. Please try using pci=biosirq.

    It turns out that 00:0f.0 is my ALi ide controller: 00:0f.0 IDE
    interface: Acer Laboratories Inc. [ALi] M5229 IDE (rev c1)

    Is this normal, or what should I do to "fix" it? Changing plug and play
    OS in the bios has no effect.

    dmesg and lspci follow:

    Linux version 2.4.3 (root@coffee) (gcc version 2.95.3 20010315 (release))
    #2 Sat Mar 31 17:50:50 PST 2001
    BIOS-provided physical RAM map:
     BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
     BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
     BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
     BIOS-e820: 0000000000100000 - 000000000fffc000 (usable)
     BIOS-e820: 000000000fffc000 - 000000000ffff000 (ACPI data)
     BIOS-e820: 000000000ffff000 - 0000000010000000 (ACPI NVS)
     BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
    On node 0 totalpages: 65532
    zone(0): 4096 pages.
    zone(1): 61436 pages.
    zone(2): 0 pages.
    Kernel command line:
    Initializing CPU#0
    Detected 451.019 MHz processor.
    Console: colour VGA+ 80x25
    Calibrating delay loop... 901.12 BogoMIPS
    Memory: 255860k/262128k available (826k kernel code, 5880k reserved, 271k
    data, 176k init, 0k highmem)
    Dentry-cache hash table entries: 32768 (order: 6, 262144 bytes)
    Buffer-cache hash table entries: 16384 (order: 4, 65536 bytes)
    Page-cache hash table entries: 65536 (order: 6, 262144 bytes)
    Inode-cache hash table entries: 16384 (order: 5, 131072 bytes)
    CPU: Before vendor init, caps: 008021bf 808029bf 00000000, vendor = 2
    CPU: L1 I Cache: 32K (32 bytes/line), D cache 32K (32 bytes/line)
    CPU: After vendor init, caps: 008021bf 808029bf 00000000 00000002
    CPU: After generic, caps: 008021bf 808029bf 00000000 00000002
    CPU: Common caps: 008021bf 808029bf 00000000 00000002
    CPU: AMD-K6(tm) 3D processor stepping 0c
    Checking 'hlt' instruction... OK.
    POSIX conformance testing by UNIFIX
    mtrr: v1.37 (20001109) Richard Gooch (rgooch@atnf.csiro.au)
    mtrr: detected mtrr type: AMD K6
    PCI: PCI BIOS revision 2.10 entry at 0xf0720, last bus=1
    PCI: Using configuration type 1
    PCI: Probing PCI hardware
    PCI: Using IRQ router ALI [10b9/1533] at 00:07.0
    Linux NET4.0 for Linux 2.4
    Based upon Swansea University Computer Society NET3.039
    Initializing RT netlink socket
    Starting kswapd v1.8
    pty: 512 Unix98 ptys configured
    block: queued sectors max/low 170010kB/56670kB, 512 slots per queue
    Uniform Multi-Platform E-IDE driver Revision: 6.31
    ide: Assuming 33MHz system bus speed for PIO modes; override with
    idebus=xx
    ALI15X3: IDE controller on PCI bus 00 dev 78
    PCI: No IRQ known for interrupt pin A of device 00:0f.0. Please try using
    pci=biosirq.
    ALI15X3: chipset revision 193
    ALI15X3: not 100% native mode: will probe irqs later
        ide0: BM-DMA at 0xb000-0xb007, BIOS settings: hda:DMA, hdb:pio
        ide1: BM-DMA at 0xb008-0xb00f, BIOS settings: hdc:pio, hdd:pio
    hda: FUJITSU MPF3204AT, ATA DISK drive
    ide: Assuming 33MHz system bus speed for PIO modes; override with
    idebus=xx
    hdc: RICOH CD-R/RW MP7040A, ATAPI CD/DVD-ROM drive
    ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
    ide1 at 0x170-0x177,0x376 on irq 15
    hda: 40031712 sectors (20496 MB) w/512KiB Cache, CHS=2491/255/63, UDMA(33)
    Partition check:
     hda: hda1 hda2 < hda5 hda6 > hda3 hda4
    Serial driver version 5.05 (2000-12-13) with MANY_PORTS SHARE_IRQ
    SERIAL_PCI enabled
    ttyS00 at 0x03f8 (irq = 4) is a 16550A
    PPP generic driver version 2.4.1
    PPP Deflate Compression module registered
    PPP BSD Compression module registered
    NET4: Linux TCP/IP 1.0 for NET4.0
    IP Protocols: ICMP, UDP, TCP
    IP: routing cache hash table of 2048 buckets, 16Kbytes
    TCP: Hash tables configured (established 16384 bind 16384)
    ip_tables: (c)2000 Netfilter core team
    NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
    cryptoapi: Registered sha1 (0)
    cryptoapi: Registered rijndael-ecb (0)
    cryptoapi: Registered rijndael-cbc (65536)
    cryptoapi: Registered aes-ecb (0)
    cryptoapi: Registered aes-cbc (65536)
    cryptoapi: Registered blowfish-ecb (0)
    cryptoapi: Registered blowfish-cbc (65536)
    cryptoapi: Registered des-ecb (0)
    cryptoapi: Registered des-cbc (65536)
    cryptoapi: Registered des_ede3-ecb (0)
    cryptoapi: Registered des_ede3-cbc (65536)
    VFS: Mounted root (ext2 filesystem) readonly.
    Freeing unused kernel memory: 176k freed
    Adding Swap: 128516k swap-space (priority -1)
    PCI: Found IRQ 3 for device 00:09.0
    3c59x.c:LK1.1.13 27 Jan 2001 Donald Becker and others.
    http://www.scyld.com/network/vortex.html
    See Documentation/networking/vortex.txt
    eth0: 3Com PCI 3c900 Boomerang 10baseT at 0xb800, 00:60:97:c7:a6:82, IRQ
    3
      product code 4843 rev 00.0 date 09-07-00
      8K word-wide RAM 3:5 Rx:Tx split, autoselect/10baseT interface.
      Enabling bus-master transmits and whole-frame receives.
    eth0: scatter/gather enabled. h/w checksums disabled
    Real Time Clock Driver v1.10d
    inserting floppy driver for 2.4.3
    Floppy drive(s): fd0 is 1.44M
    FDC 0 is a post-1991 82077
    loop: loaded (max 8 devices)
    hdc: set_drive_speed_status: status=0x40 { DriveReady }
    hdc: ATAPI 20X CD-ROM CD-R/RW drive, 2048kB Cache, DMA
    Uniform CD-ROM driver Revision: 3.12
    usb.c: registered new driver hub
    PCI: Found IRQ 7 for device 00:02.0
    PCI: Setting latency timer of device 00:02.0 to 64
    usb-ohci.c: USB OHCI at membase 0xd084f000, IRQ 7
    usb-ohci.c: usb-00:02.0, Acer Laboratories Inc. [ALi] M5237 USB
    usb.c: new USB bus registered, assigned bus number 1
    hub.c: USB hub found
    hub.c: 2 ports detected
    es1370: version v0.34 time 17:48:44 Mar 31 2001
    PCI: Found IRQ 10 for device 00:0a.0
    es1370: found adapter at io 0xb400 irq 10
    es1370: features: joystick on, line in, mic impedance 0
    gameport0: NS558 ISA at 0x200 size 8 speed 1125 kHz
    js0: Joystick device for input0
    event0: Event device for input0
    input0: Gravis Xterminator Digital on gameport0.0
    Linux agpgart interface v0.99 (c) Jeff Hartmann
    agpgart: Maximum main memory to use for agp memory: 203M
    agpgart: Detected Ali M1541 chipset
    agpgart: AGP aperture is 64M @ 0xe0000000
    [drm] AGP 0.99 on ALi M1541 @ 0xe0000000 64MB
    [drm] Initialized tdfx 1.0.0 20000928 on minor 63
    eth0: first available media type: 10baseT

    00:00.0 Host bridge: Acer Laboratories Inc. [ALi] M1541 (rev 04)
    00:01.0 PCI bridge: Acer Laboratories Inc. [ALi] M5243 (rev 04)
    00:02.0 USB Controller: Acer Laboratories Inc. [ALi] M5237 USB (rev 03)
    00:03.0 Bridge: Acer Laboratories Inc. [ALi] M7101 PMU
    00:07.0 ISA bridge: Acer Laboratories Inc. [ALi] M1533 PCI to ISA Bridge
    [Aladdin IV] (rev c3)
    00:09.0 Ethernet controller: 3Com Corporation 3c900 10BaseT [Boomerang]
    00:0a.0 Multimedia audio controller: Ensoniq ES1370 [AudioPCI]
    00:0f.0 IDE interface: Acer Laboratories Inc. [ALi] M5229 IDE (rev c1)
    01:00.0 VGA compatible controller: 3Dfx Interactive, Inc. Voodoo 3 (rev
    01)

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    This archive was generated by hypermail 2b29 : Sat Mar 31 2001 - 21:45:36 EST