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    SubjectRe: IDE poweroff -> hangup
    Date
    Ello folkz,
    Ummm the same problem I am facing whenevr I try to mount my cdrom. I am
    using kernel 2.4.2 ac-18 and yep ofcourse I am not removing my cdrom power
    supply......
    I tried hdparm -T and got
    ide_dmaproc: chipset supported ide_dma_timeout func only: 14
    I have ASUS 440BX/F mb with intel PIIX4 chipset......
    any suggestion

    Regardz
    daCodez

    >
    > Balazs....
    >
    > OH the fun....what do you think you are doing?
    > Since you have not issued a power down command nor deregisterd the device,
    > because I have not publish hotswap-ata yet....thus you can not do this in
    > a pretty way.....<ata> grumbles for Bryce.....
    > You are lucky that you have to burned the mainboard.
    > The open-collector pull on the channel will destroy the buffers on the
    > device. By pulling the power you can not hold the state of the latches
    > derived from the power-ground lines.
    >
    > There is no kernel bug!
    >
    > Does it not occur to you that by dropping the power on the device you
    > cause it to revert to the default values from POST?
    > You have successfully unsynced the HOST and the DEVICE as the timings for
    > the transfer rates. So it should HANG and DIE!
    >
    > Just be glad that the kernel will crash and not eat your data.
    >
    > Regards,
    >
    > Andre Hedrick
    > Linux ATA Development
    >
    >
    > On Thu, 15 Mar 2001, Pozsar Balazs wrote:
    >
    > >
    > > Hi all,
    > >
    > > I was courious, and I tried what happens if I power down my harddisk (ie
    > > manually pull the power plug out), and then power it on again after a
    few
    > > secs (put the plug back).
    > >
    > > I do not know if the system should survive happily such an 'accident',
    but
    > > it hadn't:
    > > A few secs after the next access to the disc, I got the following on the
    > > console:
    > > hdg: timeout waiting for DMA
    > > ide_dmaproc: chipset supported ide_dma_timeout func only: 14
    > > and the machine froze the hard way (no respond to sysrq).
    > >
    > > Tell me if this shouldn't be honoured by the kernel, but if there's a
    bug
    > > around, here's some info:
    > >
    > > Linux version 2.4.2 (root@brefatox.hell) (gcc version 2.95.3 19991030
    (prerelease)) #1 SMP Wed Mar 7 22:58:36 CET 2001
    > > BIOS-provided physical RAM map:
    > > BIOS-e820: 000000000009fc00 @ 0000000000000000 (usable)
    > > BIOS-e820: 0000000000000400 @ 000000000009fc00 (reserved)
    > > BIOS-e820: 0000000000010000 @ 00000000000f0000 (reserved)
    > > BIOS-e820: 0000000000001000 @ 00000000fec00000 (reserved)
    > > BIOS-e820: 0000000000001000 @ 00000000fee00000 (reserved)
    > > BIOS-e820: 0000000000010000 @ 00000000ffff0000 (reserved)
    > > BIOS-e820: 0000000017ef0000 @ 0000000000100000 (usable)
    > > BIOS-e820: 000000000000d000 @ 0000000017ff3000 (ACPI data)
    > > BIOS-e820: 0000000000003000 @ 0000000017ff0000 (ACPI NVS)
    > > Scan SMP from c0000000 for 1024 bytes.
    > > Scan SMP from c009fc00 for 1024 bytes.
    > > Scan SMP from c00f0000 for 65536 bytes.
    > > found SMP MP-table at 000f5770
    > > hm, page 000f5000 reserved twice.
    > > hm, page 000f6000 reserved twice.
    > > hm, page 000f1000 reserved twice.
    > > hm, page 000f2000 reserved twice.
    > > On node 0 totalpages: 98288
    > > zone(0): 4096 pages.
    > > zone(1): 94192 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
    > > Floating point unit present.
    > > Machine Exception supported.
    > > 64 bit compare & exchange supported.
    > > Internal APIC present.
    > > SEP present.
    > > MTRR present.
    > > PGE present.
    > > MCA present.
    > > CMOV present.
    > > Bootup CPU
    > > Bus #0 is PCI
    > > Bus #1 is PCI
    > > Bus #2 is ISA
    > > I/O APIC #2 Version 17 at 0xFEC00000.
    > > Int: type 3, pol 0, trig 0, bus 2, IRQ 00, APIC ID 2, APIC INT 00
    > > Int: type 0, pol 0, trig 0, bus 2, IRQ 01, APIC ID 2, APIC INT 01
    > > Int: type 0, pol 0, trig 0, bus 2, IRQ 00, APIC ID 2, APIC INT 02
    > > Int: type 0, pol 0, trig 0, bus 2, IRQ 03, APIC ID 2, APIC INT 03
    > > Int: type 0, pol 0, trig 0, bus 2, IRQ 04, APIC ID 2, APIC INT 04
    > > Int: type 0, pol 0, trig 0, bus 2, IRQ 06, APIC ID 2, APIC INT 06
    > > Int: type 0, pol 0, trig 0, bus 2, IRQ 07, APIC ID 2, APIC INT 07
    > > Int: type 0, pol 1, trig 1, bus 2, IRQ 08, APIC ID 2, APIC INT 08
    > > Int: type 0, pol 0, trig 0, bus 2, IRQ 0c, APIC ID 2, APIC INT 0c
    > > Int: type 0, pol 0, trig 0, bus 2, IRQ 0d, APIC ID 2, APIC INT 0d
    > > Int: type 0, pol 0, trig 0, bus 2, IRQ 0e, APIC ID 2, APIC INT 0e
    > > Int: type 0, pol 0, trig 0, bus 2, IRQ 0f, APIC ID 2, APIC INT 0f
    > > Int: type 0, pol 3, trig 3, bus 2, IRQ 09, APIC ID 2, APIC INT 09
    > > Int: type 0, pol 3, trig 3, bus 2, IRQ 05, APIC ID 2, APIC INT 05
    > > Int: type 0, pol 3, trig 3, bus 2, IRQ 0b, APIC ID 2, APIC INT 0b
    > > Int: type 0, pol 3, trig 3, bus 2, IRQ 0a, APIC ID 2, APIC INT 0a
    > > Lint: type 3, pol 0, trig 0, bus 2, IRQ 00, APIC ID ff, APIC LINT 00
    > > Lint: type 1, pol 0, trig 0, bus 2, IRQ 00, APIC ID ff, APIC LINT 01
    > > Processors: 1
    > > mapped APIC to ffffe000 (fee00000)
    > > mapped IOAPIC to ffffd000 (fec00000)
    > > Kernel command line: root=/dev/hdg4 apm=power-off noapic mem=393152K
    > > Initializing CPU#0
    > > Detected 434.815 MHz processor.
    > > Console: colour VGA+ 80x25
    > > Calibrating delay loop... 865.07 BogoMIPS
    > > Memory: 384580k/393152k available (856k kernel code, 8184k reserved,
    294k data, 184k init, 0k highmem)
    > > Dentry-cache hash table entries: 65536 (order: 7, 524288 bytes)
    > > Buffer-cache hash table entries: 32768 (order: 5, 131072 bytes)
    > > Page-cache hash table entries: 131072 (order: 7, 524288 bytes)
    > > Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
    > > CPU: Before vendor init, caps: 0183fbff 00000000 00000000, vendor = 0
    > > CPU: L1 I cache: 16K, L1 D cache: 16K
    > > CPU: L2 cache: 128K
    > > Intel machine check architecture supported.
    > > Intel machine check reporting enabled on CPU#0.
    > > CPU: After vendor init, caps: 0183fbff 00000000 00000000 00000000
    > > CPU: After generic, caps: 0183fbff 00000000 00000000 00000000
    > > CPU: Common caps: 0183fbff 00000000 00000000 00000000
    > > Enabling fast FPU save and restore... done.
    > > Checking 'hlt' instruction... OK.
    > > POSIX conformance testing by UNIFIX
    > > mtrr: v1.37 (20001109) Richard Gooch (rgooch@atnf.csiro.au)
    > > mtrr: detected mtrr type: Intel
    > > CPU: Before vendor init, caps: 0183fbff 00000000 00000000, vendor = 0
    > > CPU: L1 I cache: 16K, L1 D cache: 16K
    > > CPU: L2 cache: 128K
    > > Intel machine check reporting enabled on CPU#0.
    > > CPU: After vendor init, caps: 0183fbff 00000000 00000000 00000000
    > > CPU: After generic, caps: 0183fbff 00000000 00000000 00000000
    > > CPU: Common caps: 0183fbff 00000000 00000000 00000000
    > > CPU0: Intel Celeron (Mendocino) stepping 05
    > > per-CPU timeslice cutoff: 365.86 usecs.
    > > Getting VERSION: 40011
    > > Getting VERSION: 40011
    > > Getting ID: 0
    > > Getting ID: f000000
    > > Getting LVT0: 700
    > > Getting LVT1: 400
    > > enabled ExtINT on CPU#0
    > > ESR value before enabling vector: 00000004
    > > ESR value after enabling vector: 00000000
    > > CPU present map: 1
    > > Before bogomips.
    > > Error: only one processor found.
    > > Boot done.
    > > calibrating APIC timer ...
    > > ..... CPU clock speed is 434.8114 MHz.
    > > ..... host bus clock speed is 66.8940 MHz.
    > > cpu: 0, clocks: 668940, slice: 334470
    > > CPU0<T0:668928,T1:334448,D:10,S:334470,C:668940>
    > > Setting commenced=1, go go go
    > > PCI: PCI BIOS revision 2.10 entry at 0xfb3a0, last bus=1
    > > PCI: Using configuration type 1
    > > PCI: Probing PCI hardware
    > > Unknown bridge resource 0: assuming transparent
    > > PCI: Using IRQ router VIA [1106/0686] at 00:07.0
    > > Linux NET4.0 for Linux 2.4
    > > Based upon Swansea University Computer Society NET3.039
    > > apm: BIOS version 1.2 Flags 0x07 (Driver version 1.14)
    > > Starting kswapd v1.8
    > > pty: 256 Unix98 ptys configured
    > > block: queued sectors max/low 255296kB/124224kB, 768 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
    > > 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 0xc000-0xc007, BIOS settings: hda:pio, hdb:pio
    > > ide1: BM-DMA at 0xc008-0xc00f, BIOS settings: hdc:pio, hdd:pio
    > > HPT370: IDE controller on PCI bus 00 dev 70
    > > PCI: Found IRQ 11 for device 00:0e.0
    > > PCI: The same IRQ used for device 00:0d.0
    > > HPT370: chipset revision 3
    > > HPT370: not 100% native mode: will probe irqs later
    > > ide2: BM-DMA at 0xec00-0xec07, BIOS settings: hde:pio, hdf:pio
    > > ide3: BM-DMA at 0xec08-0xec0f, BIOS settings: hdg:DMA, hdh:pio
    > > hdf: YAMAHA CRW2100E, ATAPI CD/DVD-ROM drive
    > > hdg: QUANTUM FIREBALLlct20 20, ATA DISK drive
    > > ide2 at 0xdc00-0xdc07,0xe002 on irq 11
    > > ide3 at 0xe400-0xe407,0xe802 on irq 11
    > > hdg: 39876480 sectors (20417 MB) w/418KiB Cache, CHS=39560/16/63,
    UDMA(100)
    > > Partition check:
    > > /dev/ide/host2/bus1/target0/lun0: p1 p2 p3 p4
    > > NET4: Linux TCP/IP 1.0 for NET4.0
    > > IP Protocols: ICMP, UDP, TCP, IGMP
    > > IP: routing cache hash table of 4096 buckets, 32Kbytes
    > > TCP: Hash tables configured (established 32768 bind 32768)
    > > devfs: v0.102 (20000622) Richard Gooch (rgooch@atnf.csiro.au)
    > > devfs: boot_options: 0x0
    > > VFS: Mounted root (ext2 filesystem) readonly.
    > > Mounted devfs on /dev
    > > Freeing unused kernel memory: 184k freed
    > > NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
    > > SCSI subsystem driver Revision: 1.00
    > > hdf: ATAPI 40X CD-ROM CD-R/RW drive, 8192kB Cache
    > > Uniform CD-ROM driver Revision: 3.12
    > > ...
    > >
    > > regards,
    > > Balazs Pozsar.
    > >
    > > -
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