Messages in this thread |  | | | Date | Thu, 10 Jul 2003 15:29:35 -0700 | | From | Steven Dake <> | | Subject | Re: IDE/Promise 20276 FastTrack RAID Doesn't work in 2.4.21, patchattached to fix |
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Even with special fasttrack feature enabled, my disk devices on the PDC20276 is not found. There is code in pci-setup.c which blocks other PDC controllers, why not the 20276? Is that code for some other purpose, or orthagonal to the force option?
Thanks -steve
Samuel Flory wrote:
> Chad Kitching wrote: > >> I don't know. That seemed to have changed the option from merely >> mystifying to down right confusing. By that wording, does that >> feature override it into being a plain IDE controller, or an IDE RAID >> controller? The new name seems to imply the former, while the >> mentions of ataraid suggest the latter. >> >> Despite the grammatical errors, pdc202xx.c's comments perhaps >> describe it better. >> * Linux kernel will misunderstand FastTrak ATA-RAID series as Ultra >> * IDE Controller, UNLESS you enable "CONFIG_PDC202XX_FORCE" >> * That's you can use FastTrak ATA-RAID controllers as IDE controllers. >> >> > > I stopped reading the comments as they made my brain hurt more than > reading the ide driver code;-) > >> If this is true, may I suggest something more along the lines of: >> >> Ignore FastTrak BIOS and configure controller for RAID >> CONFIG_PDC202XX_FORCE >> Forces the driver to use the ATA-RAID capabilities, overriding the >> BIOS configuration of the controller. Do not enable if you are >> using Promise's binary module. This option is compatible with the >> ataraid driver. >> > > This is completely wrong in my experience. In many configs linux's > ide driver will ignore the controller entirely without > CONFIG_PDC202XX_FORCE. In these cases you can't use the disk as > either ide disks, or ataraid disks. (Keep in mind you can access the > raw disk even if ataraid is loaded.) This seems to be true of the > enbedded promise controllers found on intel and tyan boards. A few > newer intel boards will allow you to toggle between ataraid, and ide > modes in the bios. In this case you don't need CONFIG_PDC202XX_FORCE > to see the drives. > >> >> If the Linux driver has the same limitation in regards to using >> CD-ROM drives on the controller while it's in RAID mode as the >> Windows drivers do, it may be useful to mention the fact that the >> option is incompatible with CD-ROM drives attached to the controller. >> >> Of course, maybe it means the complete opposite, and I'm reading >> everything wrong, in which case, there are some comments you may want >> to fix, too. >> >> -----Original Message----- >> From: Samuel Flory >> Sent: July 10, 2003 4:11 PM >> Subject: Re: IDE/Promise 20276 FastTrack RAID Doesn't work in 2.4.21, >> patchattached to fix >> >> >> Bartlomiej Zolnierkiewicz wrote: >> >> >> >>> Hi, >>> >>> Do you have "Special FastTrak Feature" enabled? >>> >> >> >> Can we change the option to something that makes sense. I get the >> feeling no one understands what it does at 1st glance. This is the >> 2nd time I've seen a patch like this. >> > >
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