Re: [PATCH 2/5] hw/ppc/pnv_xscom: PBA bar mask values are incorrect with homer/occ sizes

[Greg Kurz <groug@kaod.org>]

On Wed, 20 Nov 2019 08:46:51 +0530
Balamuruhan S <bala24@linux.ibm.com> wrote:

> On Wed, Nov 20, 2019 at 08:31:03AM +0530, Balamuruhan S wrote:
> > On Wed, Nov 20, 2019 at 09:02:26AM +1100, David Gibson wrote:
> > > On Wed, Nov 20, 2019 at 09:00:32AM +1100, David Gibson wrote:
> > > > On Wed, Nov 20, 2019 at 08:56:18AM +1100, David Gibson wrote:
> > > > > On Tue, Nov 19, 2019 at 11:20:53PM +0530, Balamuruhan S wrote:
> > > > > > homer/occ sizes are calculated in skiboot with `(mask | 0xfffff) + 1`,
> > > > > > and from xscom access should return correct mask values instead of actual
> > > > > > sizes.
> > > > > > 
> > > > > > Signed-off-by: Cédric Le Goater <clg@kaod.org>
> > > > > > Signed-off-by: Balamuruhan S <bala24@linux.ibm.com>
> > > > > > ---
> > > > > >  hw/ppc/pnv_xscom.c | 10 ++++++----
> > > > > >  1 file changed, 6 insertions(+), 4 deletions(-)
> > > > > > 
> > > > > > diff --git a/hw/ppc/pnv_xscom.c b/hw/ppc/pnv_xscom.c
> > > > > > index f01d788a65..cdd5fa356e 100644
> > > > > > --- a/hw/ppc/pnv_xscom.c
> > > > > > +++ b/hw/ppc/pnv_xscom.c
> > > > > > @@ -46,6 +46,10 @@
> > > > > >  #define P9_PBA_BARMASK0                 0x5012b04
> > > > > >  #define P9_PBA_BARMASK2                 0x5012b06
> > > > > >  
> > > > > > +/* Mask to calculate Homer/Occ size */
> > > > > > +#define HOMER_SIZE_MASK                 0x0000000000300000ull
> > > > > > +#define OCC_SIZE_MASK                   0x0000000000700000ull
> > > > > 
> > > > > Uuuhhhhh... AFAICT these defines have identical values to
> > > > > PNV_HOMER_SIZE and PNV_OCC_COMMON_AREA_SIZE, so I don't see what this
> > > > > patch is actually changing.
> > > > 
> > > > Oh, sorry, missed that the values were changed in 1/5.  Would have
> > > > been easier to follow if the two patches were folded together, but
> > > > never mind.  Applied.
> > > 
> > > Ugh.. or not.  The first patch doesn't apply for me, looks like it
> > > needs a rebase (or you have something else in your tree I don't know
> > > about).
> > 
> > I checked out from upstream master (commit: 8937f17249 ) and worked on
>                                                  ^
> 						 |
> ignore this its my first patch commit id (1/5)----
> 
> > it.
> 
> upstream commit id: f086f22d6c (VFIO fixes 2019-11-18), please let me
> know if you would like me to respin the patches after rebase with v4.2.0
> rc2 release.
> 

Or maybe base your patches on David's ppc-for-5.0 branch available at
https://github.com/dgibson/qemu .

> -- Bala
> 
> > 
> > -- Bala
> > > 
> > > -- 
> > > David Gibson			| I'll have my music baroque, and my code
> > > david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
> > > 				| _way_ _around_!
> > > http://www.ozlabs.org/~dgibson
> > 
> > 
> > 
>