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    Subjectkernel hangs on CD-R HP8100i if compiled w/ VIA IDE support.
    Hi folks!

    The Problem:
    Kernel hangs when accessing CD-R HP8100i if VIA IDE chipset support
    is compiled in. If VIA IDE is not compiled in kernel, it works.

    Tested kernels:
    2.2.16, RedHat 7.0's 2.2.16-22, 2.2.18, 2.2.18 + Andre's IDE patch,
    2.4.0. All tested kernels behave as described. Compiled using kgcc on
    RedHat 7. No other problems.

    Hardware:
    MB Microstar K7T Pro2-A (MS-6330) - ATA 100 capable, VIA KT133.
    hda: ATA-100 30GB IBM drive
    hdc: CD-R HP8100i (does not support UDMA modes).
    BIOS reports following status:
    "hda" ATA100 mode
    "hdc" PIO3 mode

    Kernel 2.4.0 w/ VIA IDE support messages:

    Linux version 2.4.0-via (root@henryk.domain.cz) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 Sun Jan 21 11:54:55 CET 2001
    BIOS-provided physical RAM map:
    BIOS-e820: 000000000009fc00 @ 0000000000000000 (usable)
    BIOS-e820: 0000000000000400 @ 000000000009fc00 (reserved)
    BIOS-e820: 0000000000010000 @ 00000000000f0000 (reserved)
    BIOS-e820: 0000000000010000 @ 00000000ffff0000 (reserved)
    BIOS-e820: 0000000007ef0000 @ 0000000000100000 (usable)
    BIOS-e820: 000000000000d000 @ 0000000007ff3000 (ACPI data)
    BIOS-e820: 0000000000003000 @ 0000000007ff0000 (ACPI NVS)
    On node 0 totalpages: 32752
    zone(0): 4096 pages.
    zone(1): 28656 pages.
    zone(2): 0 pages.
    Kernel command line: BOOT_IMAGE=linux.240via ro root=306 BOOT_FILE=/boot/vmlinuz-2.4.0-via
    Initializing CPU#0
    Detected 699.692 MHz processor.
    Console: colour VGA+ 80x25
    Calibrating delay loop... 1395.91 BogoMIPS
    Memory: 126760k/131008k available (917k kernel code, 3860k reserved, 359k data, 192k init, 0k highmem)
    Dentry-cache hash table entries: 16384 (order: 5, 131072 bytes)
    Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes)
    Page-cache hash table entries: 32768 (order: 5, 131072 bytes)
    Inode-cache hash table entries: 8192 (order: 4, 65536 bytes)
    CPU: Before vendor init, caps: 0183f9ff c1c7f9ff 00000000, vendor = 2
    CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
    CPU: L2 Cache: 64K (64 bytes/line)
    CPU: After vendor init, caps: 0183f9ff c1c7f9ff 00000000 00000000
    CPU: After generic, caps: 0183f9ff c1c7f9ff 00000000 00000000
    CPU: Common caps: 0183f9ff c1c7f9ff 00000000 00000000
    CPU: AMD Duron(tm) Processor stepping 01
    Checking 'hlt' instruction... OK.
    POSIX conformance testing by UNIFIX
    mtrr: v1.37 (20001109) Richard Gooch (rgooch@atnf.csiro.au)
    mtrr: detected mtrr type: Intel
    PCI: PCI BIOS revision 2.10 entry at 0xfb250, last bus=1
    PCI: Using configuration type 1
    PCI: Probing PCI hardware
    Linux NET4.0 for Linux 2.4
    Based upon Swansea University Computer Society NET3.039
    DMI 2.2 present.
    38 structures occupying 1029 bytes.
    DMI table at 0x000F0800.
    BIOS Vendor: Award Software International, Inc.
    BIOS Version: 6.00 PG
    BIOS Release: 11/13/00
    System Vendor: MICRO-STAR INTERNATIONAL CO., LTD.
    Product Name: MS-6330.
    Version .
    Serial Number .
    Board Vendor: MICRO-STAR INTERNATIONAL CO., LTD.
    Board Name: MS-6330.
    Board Version: .
    Starting kswapd v1.8
    Winbond Super-IO detection, now testing ports 3F0,370,250,4E,2E ...
    SMSC Super-IO detection, now testing Ports 2F0, 370 ...
    parport0: PC-style at 0x378, irq 7 [PCSPP,EPP]
    parport_pc: Via 686A parallel port: io=0x378, irq=7
    pty: 256 Unix98 ptys configured
    Uniform Multi-Platform E-IDE driver Revision: 6.31
    ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
    VP_IDE: IDE controller on PCI bus 00 dev 39
    VP_IDE: chipset revision 6
    VP_IDE: not 100%% native mode: will probe irqs later
    VP_IDE: VIA vt82c686a IDE UDMA66 controller on pci0:7.1
    ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:DMA, hdd:pio
    hda: IBM-DTLA-307030, ATA DISK drive
    ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
    hdc: Hewlett-Packard CD-Writer Plus 8100, ATAPI CDROM drive
    ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
    ide1 at 0x170-0x177,0x376 on irq 15
    hda: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=3737/255/63, UDMA(33)
    Partition check:
    hda: hda1 hda2 < hda5 hda6 > hda3
    hda3: <solaris: [s0] hda7 [s1] hda8 [s2] hda9 [s7] hda10 >
    Floppy drive(s): fd0 is 1.44M
    FDC 0 is a post-1991 82077
    Serial driver version 5.02 (2000-08-09) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
    ttyS00 at 0x03f8 (irq = 4) is a 16550A
    ttyS01 at 0x02f8 (irq = 3) is a 16550A
    SCSI subsystem driver Revision: 1.00
    NET4: Linux TCP/IP 1.0 for NET4.0
    IP Protocols: ICMP, UDP, TCP, IGMP
    IP: routing cache hash table of 512 buckets, 4Kbytes
    TCP: Hash tables configured (established 8192 bind 8192)
    NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
    ACPI: System description tables found
    ACPI: System description tables loaded
    ACPI: Subsystem enabled
    ACPI: System firmware supports: C2
    ACPI: System firmware supports: S0 S1 S5
    VFS: Mounted root (ext2 filesystem) readonly.
    Freeing unused kernel memory: 192k freed
    Adding Swap: 265032k swap-space (priority -1)
    Via 686a audio driver 1.1.14
    ac97_codec: AC97 Audio codec, id: 0x4943:0x4511 (Unknown)
    via82cxxx: board #1 at 0xDC00, IRQ 11
    MSDOS FS: IO charset iso8859-2
    MSDOS FS: Using codepage 852
    Linux agpgart interface v0.99 (c) Jeff Hartmann
    agpgart: Maximum main memory to use for agp memory: 94M
    agpgart: Detected Via Apollo Pro KT133 chipset
    agpgart: AGP aperture is 64M @ 0xd0000000
    ne2k-pci.c:v1.02 10/19/2000 D. Becker/P. Gortmaker
    http://www.scyld.com/network/ne2k-pci.html
    eth0: RealTek RTL-8029 found at 0xe800, IRQ 11, 00:60:52:08:BE:A8.
    -------------------------------------------------------------------------
    After issuing mount /dev/hdc:

    hdc: lost interrupt
    hdc: ATAPI 24X CD-ROM CD-R/RW drive, 1024kB Cache, DMA
    Uniform CD-ROM driver Revision: 3.12
    hdc: lost interrupt

    Kernel hangs (num lock not responding, console switching does not work,
    no disk activity).

    cat /proc/ide/via:

    ----------VIA BusMastering IDE Configuration----------------
    Driver Version: 2.1e
    South Bridge: VIA vt82c686a rev 0x40
    Command register: 0x7
    Latency timer: 32
    PCI clock: 33MHz
    Master Read Cycle IRDY: 0ws
    Master Write Cycle IRDY: 0ws
    FIFO Output Data 1/2 Clock Advance: on
    BM IDE Status Register Read Retry: on
    Max DRDY Pulse Width: No limit
    -----------------------Primary IDE-------Secondary IDE------
    Read DMA FIFO flush: on on
    End Sect. FIFO flush: on on
    Prefetch Buffer: on on
    Post Write Buffer: on on
    FIFO size: 8 8
    Threshold Prim.: 1/2 1/2
    Bytes Per Sector: 512 512
    Both channels togth: yes yes
    -------------------drive0----drive1----drive2----drive3-----
    BMDMA enabled: yes no no no
    Transfer Mode: UDMA DMA/PIO DMA/PIO DMA/PIO
    Address Setup: 30ns 120ns 30ns 120ns
    Active Pulse: 90ns 330ns 90ns 330ns
    Recovery Time: 30ns 270ns 90ns 270ns
    Cycle Time: 120ns 600ns 180ns 600ns
    Transfer Rate: 16.5MB/s 3.3MB/s 11.0MB/s 3.3MB/s
    ------------------------------------------------------------------------------
    cat /proc/pci:
    PCI devices found:
    Bus 0, device 0, function 0:
    Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 2).
    Prefetchable 32 bit memory at 0xd0000000 [0xd3ffffff].
    Bus 0, device 1, function 0:
    PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP] (rev 0).
    Master Capable. No bursts. Min Gnt=12.
    Bus 0, device 7, function 0:
    ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 64).
    Bus 0, device 7, function 1:
    IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 6).
    Master Capable. Latency=32.
    I/O at 0xd000 [0xd00f].
    Bus 0, device 7, function 2:
    USB Controller: VIA Technologies, Inc. UHCI USB (rev 22).
    IRQ 9.
    Master Capable. Latency=32.
    I/O at 0xd400 [0xd41f].
    Bus 0, device 7, function 3:
    USB Controller: VIA Technologies, Inc. UHCI USB (#2) (rev 22).
    IRQ 9.
    Master Capable. Latency=32.
    I/O at 0xd800 [0xd81f].
    Bus 0, device 7, function 4:
    Host bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 64).
    Bus 0, device 7, function 5:
    Multimedia audio controller: VIA Technologies, Inc. AC97 Audio Controller (rev 80).
    IRQ 11.
    I/O at 0xdc00 [0xdcff].
    I/O at 0xe000 [0xe003].
    I/O at 0xe400 [0xe403].
    Bus 0, device 9, function 0:
    Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8029(AS) (rev 0).
    IRQ 11.
    I/O at 0xe800 [0xe81f].
    Bus 1, device 0, function 0:
    VGA compatible controller: ATI Technologies Inc Rage 128 RF (rev 0).
    IRQ 10.
    Master Capable. Latency=32. Min Gnt=8.
    Prefetchable 32 bit memory at 0xd4000000 [0xd7ffffff].
    I/O at 0xc000 [0xc0ff].
    Non-prefetchable 32 bit memory at 0xd9000000 [0xd9003fff].
    ---------------------------------------------------------------------------

    hdparm -i /dev/hda:
    /dev/hda:

    Model=IBM-DTLA-307030, FwRev=TX4OA50C, SerialNo=YKDYKTDN632
    Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
    RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=40
    BuffType=DualPortCache, BuffSize=1916kB, MaxMultSect=16, MultSect=off
    CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=60036480
    IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
    PIO modes: pio0 pio1 pio2 pio3 pio4
    DMA modes: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5

    ------------------------------------------------------------------------------
    Kernel 2.4.0 without VIA IDE support:

    Linux version 2.4.0-novia (root@henryk.domain.cz) (gcc version
    egcs-2.91.66
    19990314/Linux (egcs-1.1.2 release)) #1 Sat Jan 20 11:12:06 CET 2001
    BIOS-provided physical RAM map:
    BIOS-e820: 000000000009fc00 @ 0000000000000000 (usable)
    BIOS-e820: 0000000000000400 @ 000000000009fc00 (reserved)
    BIOS-e820: 0000000000010000 @ 00000000000f0000 (reserved)
    BIOS-e820: 0000000000010000 @ 00000000ffff0000 (reserved)
    BIOS-e820: 0000000007ef0000 @ 0000000000100000 (usable)
    BIOS-e820: 000000000000d000 @ 0000000007ff3000 (ACPI data)
    BIOS-e820: 0000000000003000 @ 0000000007ff0000 (ACPI NVS)
    On node 0 totalpages: 32752
    zone(0): 4096 pages.
    zone(1): 28656 pages.
    zone(2): 0 pages.
    Kernel command line: BOOT_IMAGE=linux.240novia ro root=306 BOOT_FILE=/boot/vmlinuz-2.4.0-novia
    Initializing CPU#0
    Detected 699.676 MHz processor.
    Console: colour VGA+ 80x25
    Calibrating delay loop... 1395.91 BogoMIPS
    Memory: 126772k/131008k available (912k kernel code, 3848k reserved, 355k data, 188k init, 0k highmem)
    Dentry-cache hash table entries: 16384 (order: 5, 131072 bytes)
    Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes)
    Page-cache hash table entries: 32768 (order: 5, 131072 bytes)
    Inode-cache hash table entries: 8192 (order: 4, 65536 bytes)
    CPU: Before vendor init, caps: 0183f9ff c1c7f9ff 00000000, vendor = 2
    CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
    CPU: L2 Cache: 64K (64 bytes/line)
    CPU: After vendor init, caps: 0183f9ff c1c7f9ff 00000000 00000000
    CPU: After generic, caps: 0183f9ff c1c7f9ff 00000000 00000000
    CPU: Common caps: 0183f9ff c1c7f9ff 00000000 00000000
    CPU: AMD Duron(tm) Processor stepping 01
    Checking 'hlt' instruction... OK.
    POSIX conformance testing by UNIFIX
    mtrr: v1.37 (20001109) Richard Gooch (rgooch@atnf.csiro.au)
    mtrr: detected mtrr type: Intel
    PCI: PCI BIOS revision 2.10 entry at 0xfb250, last bus=1
    PCI: Using configuration type 1
    PCI: Probing PCI hardware
    Linux NET4.0 for Linux 2.4
    Based upon Swansea University Computer Society NET3.039
    DMI 2.2 present.
    38 structures occupying 1029 bytes.
    DMI table at 0x000F0800.
    BIOS Vendor: Award Software International, Inc.
    BIOS Version: 6.00 PG
    BIOS Release: 11/13/00
    System Vendor: MICRO-STAR INTERNATIONAL CO., LTD.
    Product Name: MS-6330.
    Version .
    Serial Number .
    Board Vendor: MICRO-STAR INTERNATIONAL CO., LTD.
    Board Name: MS-6330.
    Board Version: .
    Starting kswapd v1.8
    Winbond Super-IO detection, now testing ports 3F0,370,250,4E,2E ...
    SMSC Super-IO detection, now testing Ports 2F0, 370 ...
    parport0: PC-style at 0x378, irq 7 [PCSPP,EPP]
    parport_pc: Via 686A parallel port: io=0x378, irq=7
    pty: 256 Unix98 ptys configured
    Uniform Multi-Platform E-IDE driver Revision: 6.31
    ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
    VP_IDE: IDE controller on PCI bus 00 dev 39
    VP_IDE: chipset revision 6
    VP_IDE: not 100%% native mode: will probe irqs later
    ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:DMA, hdd:pio
    hda: IBM-DTLA-307030, ATA DISK drive
    hdc: Hewlett-Packard CD-Writer Plus 8100, ATAPI CDROM drive
    ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
    ide1 at 0x170-0x177,0x376 on irq 15
    hda: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=3737/255/63
    Partition check:
    hda: hda1 hda2 < hda5 hda6 > hda3
    hda3: <solaris: [s0] hda7 [s1] hda8 [s2] hda9 [s7] hda10 >
    Floppy drive(s): fd0 is 1.44M
    FDC 0 is a post-1991 82077
    Serial driver version 5.02 (2000-08-09) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
    ttyS00 at 0x03f8 (irq = 4) is a 16550A
    ttyS01 at 0x02f8 (irq = 3) is a 16550A
    SCSI subsystem driver Revision: 1.00
    NET4: Linux TCP/IP 1.0 for NET4.0
    IP Protocols: ICMP, UDP, TCP, IGMP
    IP: routing cache hash table of 512 buckets, 4Kbytes
    TCP: Hash tables configured (established 8192 bind 8192)
    NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
    ACPI: System description tables found
    ACPI: System description tables loaded
    ACPI: Subsystem enabled
    ACPI: System firmware supports: C2
    ACPI: System firmware supports: S0 S1 S5
    VFS: Mounted root (ext2 filesystem) readonly.
    Freeing unused kernel memory: 188k freed
    Adding Swap: 265032k swap-space (priority -1)
    MSDOS FS: IO charset iso8859-2
    MSDOS FS: Using codepage 852
    Linux agpgart interface v0.99 (c) Jeff Hartmann
    agpgart: Maximum main memory to use for agp memory: 94M
    agpgart: Detected Via Apollo Pro KT133 chipset
    agpgart: AGP aperture is 64M @ 0xd0000000
    ne2k-pci.c:v1.02 10/19/2000 D. Becker/P. Gortmaker
    http://www.scyld.com/network/ne2k-pci.html
    eth0: RealTek RTL-8029 found at 0xe800, IRQ 11, 00:60:52:08:BE:A8.
    hdc: ATAPI 24X CD-ROM CD-R/RW drive, 1024kB Cache
    Uniform CD-ROM driver Revision: 3.12
    Via 686a audio driver 1.1.14
    ac97_codec: AC97 Audio codec, id: 0x4943:0x4511 (Unknown)
    via82cxxx: board #1 at 0xDC00, IRQ 11

    hdparm -i /dev/hdc:
    /dev/hdc:

    Model=Hewlett-Packard CD-Writer Plus 8100, FwRev=1.0g, SerialNo=PJY1R1N1CG
    Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
    RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
    BuffType=unknown, BuffSize=0kB, MaxMultSect=0
    (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
    IORDY=on/off, tPIO={min:180,w/IORDY:180}, tDMA={min:150,rec:150}
    PIO modes: pio0 pio1 pio2 pio3
    DMA modes: sdma0 sdma1 sdma2 mdma0 *mdma1

    mount /dev/hdc works without problems.

    Notes:
    Kernel reports that BIOS settings for hdc: is DMA,
    however BIOS really reports PIO3.
    Kernel reports hda: UDMA(33) however BIOS reports ATA 100.
    I tried most of other tricks (ide1=noautotune, hdc=nodma etc. but
    it did not help).


    Sincerely
    Henryk Paluch, paluch@KMLinux.fjfi.cvut.cz


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