Hi!
> On Sunday, 23 of December 2007, Carlos Corbacho wrote:
> > Fix suspend-to-RAM on nForce 4 (CK804) boards by increasing
> > PCIBIOS_MIN_IO.
> >
> > Fixes kernel bugzilla #9528
> >
> > Problem:
> >
> > Linus' patch (52ade9b3b97fd3bea42842a056fe0786c28d0555) to re-order
> > suspend (and fix fall out from Rafael's earlier suspend reordering work)
> > broke suspend-to-RAM on nForce 4 (CK804) boards.
> >
> > Why:
> >
> > After debugging _PTS() in the DSDT, it turns out these nVidia boards are
> > trying to write to an IO port > 0x1000 (0x142E) during suspend. Before the
> > re-ordering, we got away with this.
> >
> > After the afore mentioned commit, we started hitting the PCIBIOS_MIN_IO
> > limit and suspend then broke on these machines (the machine simply hangs
> > when it reaches the 0x142E IO port write during suspend-to-RAM).
> >
> > There was some previous work in the PCIBIOS_MIN_IO area over two years ago
> > (71db63acff69618b3d9d3114bd061938150e146b) which bumped this to 0x4000,
> > but this was reverted (2ba84684e8cf6f980e4e95a2300f53a505eb794e) after
> > causing new and entirely different problems on another nForce board.
> >
> > 0x1500 has been picked here as a nice, round and more conservative value
> > than 0x4000, and which covers 0x142E.
>
> The patch is fine by me, so if anyone has objections, please speak up.
Just.. I have been running with very similar patch for few years... it
fixes few prototype machines I have here.
> > diff --git a/include/asm-x86/pci.h b/include/asm-x86/pci.h
> > index e883619..03cb123 100644
> > --- a/include/asm-x86/pci.h
> > +++ b/include/asm-x86/pci.h
> > @@ -46,7 +46,7 @@ extern unsigned int pcibios_assign_all_busses(void);
> > #define pcibios_scan_all_fns(a, b) 0
> >
> > extern unsigned long pci_mem_start;
> > -#define PCIBIOS_MIN_IO 0x1000
> > +#define PCIBIOS_MIN_IO 0x1500
> > #define PCIBIOS_MIN_MEM (pci_mem_start)
> >
> > #define PCIBIOS_MIN_CARDBUS_IO 0x4000
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
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]
