[Intel-gfx] [PATCH] drm/i915/bdw: WaProgramL3SqcReg1Default

[Vivi, Rodrigo]

On Wed, 2015-04-01 at 11:31 +0300, Ville Syrjälä wrote:
> On Tue, Mar 31, 2015 at 04:03:21PM -0700, Rodrigo Vivi wrote:
> > Program the default initial value of the L3SqcReg1 on BDW for performance
> > 
> > v2: Default confirmed and using intel_ring_emit_wa as Mika pointed out.
> > 
> > v3: Spec shows now a different value. It tells us to set to 0x784000
> >     instead the 0x610000 that is there already.
> >     Also rebased after a long time so using WA_WRITE now.
> 
> Told you so ;)
> 
> http://lists.freedesktop.org/archives/intel-gfx/2014-September/052999.html

ops, sorry! but now BSpec is updated at least...

So rv-b? :)
> 
> > 
> > Cc: Mika Kuoppala <mika.kuoppala at intel.com>
> > Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
> > ---
> >  drivers/gpu/drm/i915/i915_reg.h         | 3 +++
> >  drivers/gpu/drm/i915/intel_ringbuffer.c | 3 +++
> >  2 files changed, 6 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> > index 7e1a0fd9..7f8b69a 100644
> > --- a/drivers/gpu/drm/i915/i915_reg.h
> > +++ b/drivers/gpu/drm/i915/i915_reg.h
> > @@ -5325,6 +5325,9 @@ enum skl_disp_power_wells {
> >  #define GEN7_L3SQCREG1				0xB010
> >  #define  VLV_B0_WA_L3SQCREG1_VALUE		0x00D30000
> >  
> > +#define GEN8_L3SQCREG1				0xB100
> > +#define  BDW_WA_L3SQCREG1_DEFAULT		0x784000
> > +
> >  #define GEN7_L3CNTLREG1				0xB01C
> >  #define  GEN7_WA_FOR_GEN7_L3_CONTROL			0x3C47FF8C
> >  #define  GEN7_L3AGDIS				(1<<19)
> > diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
> > index abe062a..c02fccc 100644
> > --- a/drivers/gpu/drm/i915/intel_ringbuffer.c
> > +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
> > @@ -853,6 +853,9 @@ static int bdw_init_workarounds(struct intel_engine_cs *ring)
> >  			    GEN6_WIZ_HASHING_MASK,
> >  			    GEN6_WIZ_HASHING_16x4);
> >  
> > +	/* WaProgramL3SqcReg1Default:bdw */
> > +	WA_WRITE(GEN8_L3SQCREG1, BDW_WA_L3SQCREG1_DEFAULT);
> > +
> >  	return 0;
> >  }
> >  
> > -- 
> > 2.1.0
> > 
> > _______________________________________________
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> > Intel-gfx at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>