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    SubjectAlpha SCSI error on 2.4.0-test11
    Hi All,

    Qlogic SCSI support seems broken on 2.4.0-test11 on a Miata (Digital Personal WorkStation 600au).

    When starting up, we get a machine check after initialing the qlogic SCSI code.

    Using the Alpha kgdb, we figured out that the code is dying in scsi_wait_request().

    Here's the backtrace:

    scsi_wait_req (SRpnt=0xfffffc0001f9b480, cmnd=0xfffffc890000a078,
    buffer=0x100, bufflen=2, timeout=17891584, retries=6144)
    at /usr/src/linux/include/asm/atomic.h:85
    (gdb) where
    #0 scsi_wait_req (SRpnt=0xfffffc0001f9b480, cmnd=0xfffffc890000a078,
    buffer=0x100, bufflen=2, timeout=17891584, retries=6144)
    at /usr/src/linux/include/asm/atomic.h:85
    #1 0xfffffc00004107f0 in scan_scsis_single (channel=0, dev=41080, lun=0,
    max_dev_lun=0xfffffc00001efa30, sparse_lun=0xfffffc00001efa34,
    SDpnt2=0xfffffc00001efa38, shpnt=0xfffffc00005ff800,
    scsi_result=0xfffffc00001ef930 "\001") at scsi_scan.c:516
    #2 0xfffffc0000410548 in scan_scsis (shpnt=0xfffffc00005ff800, hardcoded=1,
    hchannel=0, hid=0, hlun=0) at scsi_scan.c:403
    #3 0xfffffc0000404f58 in scsi_register_host (tpnt=0xfffffc000058fb80)
    at scsi.c:1904
    #4 0xfffffc00004dac50 in init_this_scsi_driver ()
    #5 0xfffffc00004c2bec in do_initcalls ()
    #6 0xfffffc00004c2c6c in do_basic_setup ()
    #7 0xfffffc0000310078 in init (unused=0x0) at init/main.c:775


    Note: On the working kernels, the two controllers are 0x800 apart, but
    on the broken kernels, they are only 0x400. Could the overlap
    cause problems?

    Working: 2.2.14-6.0: (from 6.2 Redhat)

    qlogicisp : new isp1020 revision ID (5)
    qlogicisp : new isp1020 revision ID (5)
    scsi0 : QLogic ISP1020 SCSI on PCI bus 01 device 20 irq 27 I/O base 0x9000
    scsi1 : QLogic ISP1020 SCSI on PCI bus 01 device 48 irq 40 I/O base 0x9800
    scsi : 2 hosts.
    Vendor: DEC Model: RZ1CB-BA (C) DEC Rev: LYE0
    Type: Direct-Access ANSI SCSI revision: 02
    Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
    Vendor: DEC Model: RZ28D (C) DEC Rev: 0008
    Type: Direct-Access ANSI SCSI revision: 02
    Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0
    Vendor: DEC Model: RZ1BB-BA (C) DEC Rev: LYE0
    Type: Direct-Access ANSI SCSI revision: 02
    Detected scsi disk sdc at scsi0, channel 0, id 2, lun 0
    scsi : detected 3 SCSI disks total.

    Working: vmlinux-2.2.17-4 (from 7.0 Redhat)
    qlogicisp : new isp1020 revision ID (5)
    qlogicisp : new isp1020 revision ID (5)
    DC390: 0 adapters found
    scsi0 : QLogic ISP1020 SCSI on PCI bus 01 device 20 irq 27 I/O base 0xa000
    scsi1 : QLogic ISP1020 SCSI on PCI bus 01 device 48 irq 40 I/O base 0xa800
    scsi : 2 hosts.
    Vendor: DEC Model: RZ1CB-BA (C) DEC Rev: LYE0
    Type: Direct-Access ANSI SCSI revision: 02
    Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
    Vendor: DEC Model: RZ28D (C) DEC Rev: 0008
    Type: Direct-Access ANSI SCSI revision: 02
    Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0
    Vendor: DEC Model: RZ1BB-BA (C) DEC Rev: LYE0
    Type: Direct-Access ANSI SCSI revision: 02
    Detected scsi disk sdc at scsi0, channel 0, id 2, lun 0
    scsi : detected 3 SCSI disks total.
    SCSI device sda: hdwr sector= 512 bytes. Sectors= 8380080 [4091 MB] [4.1 GB]
    SCSI device sdb: hdwr sector= 512 bytes. Sectors= 4110480 [2007 MB] [2.0 GB]
    SCSI device sdc: hdwr sector= 512 bytes. Sectors= 4110480 [2007 MB] [2.0 GB]

    Broken 2.4.0-test11: (gcc version 2.96 20000731 (Red Hat Linux 7.0))

    SCSI subsystem driver Revision: 1.00
    qlogicisp : new isp1020 revision ID (5)
    qlogicisp : new isp1020 revision ID (5)
    scsi0 : QLogic ISP1020 SCSI on PCI bus 01 device 20 irq 27 I/O base 0xa000
    scsi1 : QLogic ISP1020 SCSI on PCI bus 01 device 48 irq 40 I/O base 0xa400
    CIA machine check: vector=0x660 pc=0xfffffc0000312644 code=0x813
    machine check type: unknown
    pc = [<fffffc0000312644>] ra = [<fffffc0000312660>] ps = 0000
    v0 = 0000000000000000 t0 = 0000000000000000 t1 = fffffc00005d8b20
    t2 = 0000000000000001 t3 = 0000000000000001 t4 = fffffc000057a110
    t5 = fffffffffffffc18 t6 = 000000000000451d t7 = fffffc0000520000
    a0 = 0000000000000019 a1 = 0000000000000032 a2 = fffffc000035d5cc
    a3 = 0000000000000002 a4 = fffffc0000544080 a5 = fffffc000057a110
    t8 = 0000000000000000 t9 = 00000000f96329ef t10= 0000000000000000
    t11= 0000000000000001 pv = fffffc0000329f80 at = fffffc0000520000
    gp = fffffc000059dd88 sp = fffffc0000523fd0
    scsi : aborting command due to timeout : pid 0, scsi0, channel 0, id 0, lun 0 0
    scsi : aborting command due to timeout : pid 0, scsi0, channel 0, id 0, lun 0 0
    scsi : aborting command due to timeout : pid 0, scsi0, channel 0, id 0, lun 0 0
    scsi : aborting command due to timeout : pid 0, scsi0, channel 0, id 0, lun 0 0


    Broken 2.4.0-test11: (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release))

    SCSI subsystem driver Revision: 1.00
    qlogicisp : new isp1020 revision ID (5)
    qlogicisp : new isp1020 revision ID (5)
    scsi0 : QLogic ISP1020 SCSI on PCI bus 01 device 20 irq 27 I/O base 0xa000
    scsi1 : QLogic ISP1020 SCSI on PCI bus 01 device 48 irq 40 I/O base 0xa400
    CIA machine check: vector=0x660 pc=0xfffffc0000312464 code=0x813
    machine check type: unknown
    pc = [<fffffc0000312464>] ra = [<fffffc0000312480>] ps = 0000
    v0 = 0000000000000000 t0 = 0000000000000000 t1 = 0000000000000001
    t2 = 0000000000000001 t3 = fffffc0000562850 t4 = fffffc0000562850
    t5 = fffffffffffffc18 t6 = fffffc00005613d0 t7 = fffffc0000508000
    a0 = 0000000000000019 a1 = 0000000000000032 a2 = fffffc000035b478
    a3 = 0000000000000002 a4 = fffffc00003f8880 a5 = 0000000000001800
    t8 = 0000000000000000 t9 = 000000001feee829 t10= 0000000000000000
    t11= ffff00ff00000012 pv = fffffc0000329f80 at = fffffc000052c080
    gp = fffffc0000585ed8 sp = fffffc000050bfd0
    scsi : aborting command due to timeout : pid 0, scsi0, channel 0, id 0, lun 0 0
    scsi : aborting command due to timeout : pid 0, scsi0, channel 0, id 0, lun 0 0
    scsi : aborting command due to timeout : pid 0, scsi0, channel 0, id 0, lun 0 0
    scsi : aborting command due to timeout : pid 0, scsi0, channel 0, id 0, lun 0 0


    Thanks,
    --Phil & Bill

    Compaq: High Performance Server Division/Benchmark Performance Engineering
    ---------------- Alpha, The Fastest Processor on Earth --------------------
    Phillip.Ezolt@compaq.com |C|O|M|P|A|Q| ezolt@perf.zko.dec.com
    ------------------- See the results at www.spec.org -----------------------


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