Kurt Roeckx writes: > On Tue, Jan 15, 2008 at 10:28:06AM +0100, Mikael Pettersson wrote: > > > 00:08.0 RAID bus controller: Promise Technology, Inc. PDC20376 (FastTrak 376) (rev 02) > > ... > > > 00:08.0 0104: 105a:3376 (rev 02) > > > > Let me guess, this is a Promise chip included on the mainboard > > as a RAID controller, and not an add-on PCI card? > > Yes, it's a K8V motherboard which has that onboard. > > > If it's a mainboard chip, please enter the BIOS and see if it > > can be configured for non-RAID mode. If it can, please reconfigure > > it and boot Linux. Does it still claim to be a 20376 or is it > > now a 20378? > > I can't find an option to turn that off in the BIOS. If it did, I'd > probably have turned it off already. I've also opened the case and it > says PDC20376 on the chip. Ok. I haven't yet found any information about the 20376 which could explain why the 20376 fails while the 20378 works. For now, you can disable hotplugging in the driver by applying the patch below. This should at least bring back some stability to your system. Longer-term I guess I'll have to invent a blacklist mechanism to automatically prevent 20376 chips from enabling hotplugging. That is, unless someone can show me a system where a 20376 actually does work with hotplugging, in which case I'd need a module parameter (yuck) or some form of dynamic detection of this condition. /Mikael --- linux-2.6.23/drivers/ata/sata_promise.c.~1~ 2007-10-10 10:33:23.000000000 +0200 +++ linux-2.6.23/drivers/ata/sata_promise.c 2008-01-16 10:46:29.000000000 +0100 @@ -743,6 +743,7 @@ static irqreturn_t pdc_interrupt (int ir if (hotplug_status & 0xff) writel(hotplug_status | 0xff, mmio_base + hotplug_offset); hotplug_status &= 0xff; /* clear uninteresting bits */ + hotplug_status = 0; /* ignore hotplug status */ /* reading should also clear interrupts */ mask = readl(mmio_base + PDC_INT_SEQMASK); @@ -938,9 +939,9 @@ static void pdc_host_init(struct ata_hos tmp = readl(mmio + hotplug_offset); writel(tmp | 0xff, mmio + hotplug_offset); - /* unmask plug/unplug ints */ + /* mask plug/unplug ints */ tmp = readl(mmio + hotplug_offset); - writel(tmp & ~0xff0000, mmio + hotplug_offset); + writel(tmp | 0xff0000, mmio + hotplug_offset); /* don't initialise TBG or SLEW on 2nd generation chips */ if (is_gen2) - To unsubscribe from this list: 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
