Messages in this thread | | | From | Arkadiusz Miskiewicz <> | Subject | finding which pci device works as ide controller for root fs | Date | Thu, 14 Aug 2003 18:26:30 +0200 |
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Hi,
I need /dev/hdX -> pci id mapping for geninitrd script - with modular IDE I need to load some IDE controller driver from initrd to mount root fs.
Now I'm loading all modules for IDE devices found from: awk ' { print $2 } ' /proc/bus/pci/devices + simple file which maps PCI ID to module name like 808684cb piix
How to find controller which is used for root fs (and do not load other modules)? I suppose that on 2.4 this is impossible from userspace but on 2.6 maybe sysfs will be useful.
[arekm@mobarm arekm]$ ls -l /sys/block/hda/device lrwxrwxrwx 1 root root 46 2003-08-14 00:49 /sys/block/hda/device -> ../../devices/pci0000:00/0000:00:11.1/ide0/0.0
Is it possible to get PCI ID from sysfs for specified device?
-- Arkadiusz Miśkiewicz CS at FoE, Wroclaw University of Technology arekm@sse.pl AM2-6BONE, 1024/3DB19BBD, arekm(at)ircnet, PLD/Linux
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