Linux-kernel mailing list archive 2000-26,: Strange IDE-CDROM prob. with 2.2.14 (IDE driver Revision: 6.30)

# Strange IDE-CDROM prob. with 2.2.14 (IDE driver Revision: 6.30)

Hans-Peter Jansen (hpj.lisa@t-online.de)
Mon, 26 Jun 2000 18:39:45 +0200

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Hi Andre,

today I failed to setup 2 cdrom drives (450 miles away).
These are netbooting SuSE 6.4-i386 linux 2.2.14 clients.
One with piix4, the other is amd irongate chipset.
As the failure is similar, I will provide only one case.
Both loaded the ide-stuff fine, but don't list devices
in the common way:

Jun 26 17:52:42 rex kernel: Uniform Multi-Platform E-IDE driver Revision: 6.30
Jun 26 17:52:42 rex kernel: ide: Assuming 40MHz system bus speed for PIO modes; override with
idebus=xx
Jun 26 17:52:42 rex kernel: VP_IDE: IDE controller on PCI bus 00 dev 21
Jun 26 17:52:42 rex kernel: VP_IDE: not 100% native mode: will probe irqs later
Jun 26 17:52:42 rex kernel: ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:pio
Jun 26 17:52:42 rex kernel: ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:pio

# no device specific listing...

# modules loaded with modprobe ide-cd:

Module Size Used by
ide-cd 23200 0
ide-mod 50080 0 [ide-cd]
cdrom 13752 0 [ide-cd]

Correspondingly, the device entries and missing in /proc/ide:

rex:/home/hp# l /proc/ide
total 0
dr-xr-xr-x 2 root root 0 Jun 26 18:00 ./
dr-xr-xr-x 41 root root 0 Jun 26 2000 ../
-r--r--r-- 1 root root 0 Jun 26 18:00 drivers
rex:/home/hp# cat /proc/ide/drivers
ide-cdrom version 4.54

I tried to reduce pio modes in BIOS, but don't succeed to
make these Toshiba IDE CM-64* cdrom drives work.

Both systems are "normal clocked", but the driver assumes
40MHz bus speed, which makes me wonder...

Do you have any idea, what's going on here?

May I provide more info's?

Thanks in advance,
Hans-Peter

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