Messages in this thread | | | Date | Wed, 18 Jan 2006 13:15:31 +0100 | From | Christer Bäckström <> | Subject | Re: amd64 cdrom access locks system |
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Alan Cox skrev: > On Mer, 2006-01-18 at 01:31 +0100, Christer Bäckström wrote: > >>ALi Corporation M5229 IDE (rev c7) >> >>The cd-writer locks up if the DMA is enabled, as above. But the drive is >>usable if it is disabled. > > > Under what circumstances does the writer lock - when writing or in > general ? > >
It locks while writing and using DMA. I get the errors:
ide-cd: cmd 0x3 timed out hdc: lost interrupt
And the cd-writer hangs. Disabling DMA makes it possible to write (slowly, and only after rebooting). Reading always works. Other functions also works while using DMA, like "cdrecord -checkdrive" or "cdrecord -scanbus". However not things like "cdrecord -dummy".
A few snippets: ------- lspci -v: ------- 00:1f.0 IDE interface: ALi Corporation M5229 IDE (rev c7) (prog-if 8a [Master SecP PriP]) Subsystem: Unknown device 1631:c00e Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 255 I/O ports at 1100 [size=16] Capabilities: [60] Power Management version 2 -------
dmesg: ------- Bootdata ok (command line is BOOT_IMAGE=2615 root=306 noinitrd hdc=ide-cdrom resume=/dev/hda5 resume2=/dev/hda5 splash=silent 3) Linux version 2.6.15 (root@localhost) (gcc version 4.0.1 (4.0.1-5mdk for Mandriva Linux release 2006.0)) #7 PREEMPT Sun Jan 8 18:23:09 CET 2006 ... CPU: AMD Turion(tm) 64 Mobile Technology ML-30 stepping 02 ... ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx ALI15X3: IDE controller at PCI slot 0000:00:1f.0 ACPI: PCI Interrupt 0000:00:1f.0[A]: no GSI ALI15X3: chipset revision 199 ALI15X3: not 100% native mode: will probe irqs later ide0: BM-DMA at 0x1100-0x1107, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0x1108-0x110f, BIOS settings: hdc:DMA, hdd:pio Probing IDE interface ide0... hda: WDC WD800UE-00HCT0, ATA DISK drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 Probing IDE interface ide1... hdc: _NEC DVD+/-RW ND-6650A, ATAPI CD/DVD-ROM drive ide1 at 0x170-0x177,0x376 on irq 15 hda: max request size: 128KiB hda: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=65535/16/63, UDMA(100) hda: cache flushes supported hda: hda1 hda2 hda3 < hda5 hda6 > hdc: ATAPI 24X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, UDMA(33) Uniform CD-ROM driver Revision: 3.20 -------
The irq and ioports in the dmesg are the same as presented in windows, if that helps in any way. Bartlomiej Zolnierkiewicz pointed out there are a bugzilla entry for this:
http://bugzilla.kernel.org/show_bug.cgi?id=5786
I'm going to look into the posts 'til tomorrow, and continue with this problem over there.
Cheers,
/Chris
-- Dr. Chris Backstrom, BSc, PhD.
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