This 'patch' did not work.
I tried setting the physical mem to just below the va addresses the
PEX is being assigned (0xea900000 (3753M) and everything works...
I set it to just above - and it gets miscellaneous boot problems....
like binfmt problems when attempting to insmod a module at boot time
("runaway loop modprobe binfmt_????" (?=I forgot to write down #) - this
was mem=3850M) or downright hanging after kernel has initialized and
it says "freeing kernel memory" (i.e.: where it attempts to run init
on the root harddrive).
IMHO, this tells me that perhaps there is somewhere else in the sata_mv
code that is either modifying / accessing edma registers or something
like this - that just doesn't seem right!
I am going to try to port forward the driver that I know works and see
if there are still any problems...stay tuned!
Tom
-----Original Message-----
From: Mark Lord [mailto:[email protected]]
Sent: Thursday, November 15, 2007 5:14 PM
To: Morrison, Tom
Cc: Jeff Garzik; [email protected]; [email protected]
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?
..
I don't know much about how 32-bit PPC deals with memory addresses
that are more than 32-bits..
But does this patch have any effect:
--- old/drivers/ata/sata_mv.c 2007-10-12 12:43:44.000000000 -0400
+++ linux/drivers/ata/sata_mv.c 2007-11-15 17:12:24.000000000 -0500
@@ -685,7 +685,7 @@
{
int rc;
- if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
+ if (0 && !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
if (rc) {
rc = pci_set_consistent_dma_mask(pdev,
DMA_32BIT_MASK);
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
