Re: IDE/ATAPI timeouts & lost interrupts on alpha with 2.6.20.2

[Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>]

Hi,

On Saturday 10 March 2007, Russell Howe wrote:
> Evening all,
> 
> I just built a 2.6.20.2 kernel for my alpha (a digital personal
> workstation 500AU), and on bootup noticed the messages below, which took
> a long time to print. There was no media in the CDROM, and there's
> nothing else hanging off the IDE controller. The messages took several
> minutes to appear, stalling the boot process.
> 
> Unrelated, no doubt, but the output from the init scripts doesn't seem
> to have made it to the serial console, so I'm not sure what processes
> were running at the time.
> 
> The last kernel I ran on this thing was 2.6.17.11, which I appreciate is
> a long time ago, so if anyone could suggest a starting point for a
> binary search to determine the change which caused this regression, I'm
> all ears! Kernels take a while to build on this box, and I haven't got a
> crosscompiling toolchain setup...
> 
> What's the best way to go about debugging this?
> 
> Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> [...]
> CY82C693: IDE controller at PCI slot 0000:00:07.1
> CY82C693: chipset revision 0
> CY82C693: not 100% native mode: will probe irqs later
> CY82C693U driver v0.34 99-13-12 Andreas S. Krebs (akrebs@altavista.net)
>     ide0: BM-DMA at 0x9080-0x9087, BIOS settings: hda:pio, hdb:pio
> PCI: Enabling device: (0000:00:07.2), cmd 47
> CY82C693: port 0x01f0 already claimed by ide0
> CY82C693: neither IDE port enabled (BIOS)

It seems that the generic IDE host driver is loaded first
(CONFIG_IDE_GENERIC=y/m) and "steals" resources needed by cy82c693.

Please try again without the generic IDE host driver so the proper
driver could be used.

If it doesn't help I think that the best way to chase it is git bisect.

Thanks,
Bart

> Probing IDE interface ide0...
> hda: TOSHIBA CD-ROM XTAPI CD/DVD-ROM drive
> hda: IRQ probe failed (0xfffffffff73bfeea)
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> ide-cd: cmd 0x5a timed out
> hda: lost interrupt
> ide-cd: cmd 0x5a timed out
> hda: lost interrupt
> ide-cd: cmd 0x5a timed out
> hda: lost interrupt
> hda: ATAPI 32X CD-ROM drive, 256kB Cache, DMA
> Uniform CD-ROM driver Revision: 3.20
> hda: lost interrupt
> ide-cd: cmd 0x3 timed out
> hda: lost interrupt
> ide-cd: cmd 0x3 timed out
> hda: lost interrupt
> hda: lost interrupt
> ide-cd: cmd 0x3 timed out
> hda: lost interrupt
> ide-cd: cmd 0x3 timed out
> hda: lost interrupt
> hda: lost interrupt
> ide-cd: cmd 0x3 timed out
> hda: lost interrupt
> ide-cd: cmd 0x3 timed out
> hda: lost interrupt
> 
> -- 
> Russell Howe       | Why be just another cog in the machine,
> rhowe@siksai.co.uk | when you can be the spanner in the works?