On Iau, 2006-05-11 at 23:50 +0400, Sergei Shtylyov wrote: > According to the datasheet, Intel 82371MX (MPIIX) actually has only a > single IDE channel mapped to the primary or secondary ports depending on the > value of the bit 14 of the IDETIM register at PCI config. offset 0x6C (the > register at 0x6F which the driver refers to. doesn't exist). So, disguise the > controller as dual channel and set enablebits masks/values such that only > either primary or secondary channel is detected enabled. Also, preclude the > IDE probing code from reading PCI BARs, this controller just doesn't have them > (it's not the separate PCI function like the other PCI controllers), it only > decodes the legacy addresses. There are lots and lots of other things you need to fix to make MPIIX work with that driver. It has only a single timing register for one so you must switch timing as you flip drive. Also it is not an IDE class device so the PCI native/legacy and simplex stuff is not valid. Finally the PIIX driver pokes several registers it doesn't even have. What else - oh yes the piix driver doesn't even tune the timings, so it doesn't work anyway. Thats why drivers/scsi/pata_mpiix is a separate driver. Really if you want to try and rescue the old PIIX driver you should split out PIIX3 and MPIIX into their own drivers. - : send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
