Mark, I've ported the old sataMV driver (version 3.6) to the 2.6.23.1 kernel - and it works - no problems with a full mem=4000M (4Gig). The only problem with this is that it is MUCH slower than the sata_mv driver which - by this test - definitely has some bug/dependency that gets broken when the physical memory overlaps its memory I/O locations (and should be iomapped & dma mapped to a separate space up in 0xC_xxxx_xxxx)... Time to dig in and debug this driver! UGH! Tom -----Original Message----- From: Mark Lord [mailto:liml@xxxxxx] Sent: Thursday, November 15, 2007 5:14 PM To: Morrison, Tom Cc: Jeff Garzik; linux-ide@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx Subject: Re: 2.6.23.1 - sata_mv (7042) hang with large file operations Morrison, Tom wrote: > The plot thickens - it looks like it might be some type > of problem interacting with the setup of my 4Gig DDR memory > and how I setup some translation windows in my MPC8548E > > I realized this morning that I have an inbound/ output PEX window > Translation Setup for mapping all from/to PEX bus to outside > the physical 4GIG memory space (i.e.: up at 0xC_xxxx_xxxx). Thus, > all output operations that translation from 0xC_xxxx_xxxx to > the pci 32 bit address of xxxx_xxxx) - and vice versa for for > the inbound. Note: we also have a straight 1:1 translation mapping > as well for the lower 4Gig - so that's why this worked without > the below mentioned change... > > So, I changed the Request & Response Hi Addresses (which were > Being shifted by 32 bits down anyways) and 'OR' that with my > 0xC (so the effective 64bit DMA address is 0xC_xxxx_xxxx (where > Xxxx_xxxx is the effective address). This was what we did to > solve the problem with the Marvel Linux driver that we got from > the Marvel site.... > > This all works just fine with ONLY 2 gig of memory in the system > (and still have these inbound/output pex translation windows), > but fails when I put back the 4 Gig (and the 8Gig) DDR memory. > > Unfortunately, this still hasn't solved the problem though - > so there is something else which I am not seeing? .. <snip patch that has no affect> - 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
