On Mon, 26 Aug 2002 14:45:27 +0200, Danilo Godec wrote: > > I'm using several Intel server boards with ServerWorks CSB5 chipset for > IDE. Even though this chipset is supposed to support ATA100 and it is > supposed to be supported in Linux and I do have CONFIG_BLK_DEV_SVWKS=y > in my .config, I can't set speeds higher than 'hdparm -X66 /dev/hda'! > This is because the Serverworks CSB5 does not provide any way to detect 80-conductor cable presence. (see my notes at the top of drivers/ide/serverworks.c) Some vendors have worked around this problem by having the BIOS encode it in the top 2 bits of the subsystem device ID. This includes Sun Cobalt and Dell boxes with the CSB5. You should be able to override the cable detection by passing parameters: ide0=ata66 ide1=ata66 It is also possible the Intel BIOS is encoding it somewhere already, in which case it could be worked around in the driver. Try examining the subsystem device ID with various combinations of drives plugged in and see if there is any discernable pattern. -duncan - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
