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drm/i915: unify gen6/gen8 rps irq enable/disable 

The GEN6 and GEN8 versions differ only in the PM IIR and IER register
addresses and that on GEN8 we need to keep the
GEN8_PMINTR_REDIRECT_TO_NON_DISP PM interrupt unmasked. Abstract away
these 3 things in the GEN6 versions of the helpers and use them
everywhere.

No functional change.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Imre Deak 2014-11-05 20:48:42 +02:00 committed by Daniel Vetter
parent c9a9a26882
commit 20415c5d4e
1 changed files with 15 additions and 38 deletions
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53
drivers/gpu/drm/i915/intel_pm.c
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@ -4519,24 +4519,14 @@ void valleyview_set_rps(struct drm_device *dev, u8 val)
trace_intel_gpu_freq_change(vlv_gpu_freq(dev_priv, val));
}
static void gen8_disable_rps_interrupts(struct drm_device *dev)
static u32 gen6_pm_iir(struct drm_i915_private *dev_priv)
{
struct drm_i915_private *dev_priv = dev->dev_private;
return INTEL_INFO(dev_priv)->gen >= 8 ? GEN8_GT_IIR(2) : GEN6_PMIIR;
}
I915_WRITE(GEN6_PMINTRMSK, ~GEN8_PMINTR_REDIRECT_TO_NON_DISP);
I915_WRITE(GEN8_GT_IER(2), I915_READ(GEN8_GT_IER(2)) &
~dev_priv->pm_rps_events);
/* Complete PM interrupt masking here doesn't race with the rps work
* item again unmasking PM interrupts because that is using a different
* register (GEN8_GT_IMR(2)) to mask PM interrupts. The only risk is in
* leaving stale bits in GEN8_GT_IIR(2) and GEN8_GT_IMR(2) which
* gen8_enable_rps will clean up. */
spin_lock_irq(&dev_priv->irq_lock);
dev_priv->rps.pm_iir = 0;
spin_unlock_irq(&dev_priv->irq_lock);
I915_WRITE(GEN8_GT_IIR(2), dev_priv->pm_rps_events);
static u32 gen6_pm_ier(struct drm_i915_private *dev_priv)
{
return INTEL_INFO(dev_priv)->gen >= 8 ? GEN8_GT_IER(2) : GEN6_PMIER;
}
static void gen9_disable_rps(struct drm_device *dev)
@ -4550,8 +4540,9 @@ static void gen6_disable_rps_interrupts(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
I915_WRITE(GEN6_PMINTRMSK, 0xffffffff);
I915_WRITE(GEN6_PMIER, I915_READ(GEN6_PMIER) &
I915_WRITE(GEN6_PMINTRMSK, INTEL_INFO(dev_priv)->gen >= 8 ?
~GEN8_PMINTR_REDIRECT_TO_NON_DISP : ~0);
I915_WRITE(gen6_pm_ier(dev_priv), I915_READ(gen6_pm_ier(dev_priv)) &
~dev_priv->pm_rps_events);
/* Complete PM interrupt masking here doesn't race with the rps work
* item again unmasking PM interrupts because that is using a different
@ -4562,7 +4553,7 @@ static void gen6_disable_rps_interrupts(struct drm_device *dev)
dev_priv->rps.pm_iir = 0;
spin_unlock_irq(&dev_priv->irq_lock);
I915_WRITE(GEN6_PMIIR, dev_priv->pm_rps_events);
I915_WRITE(gen6_pm_iir(dev_priv), dev_priv->pm_rps_events);
}
static void gen6_disable_rps(struct drm_device *dev)
@ -4572,10 +4563,7 @@ static void gen6_disable_rps(struct drm_device *dev)
I915_WRITE(GEN6_RC_CONTROL, 0);
I915_WRITE(GEN6_RPNSWREQ, 1 << 31);
if (IS_BROADWELL(dev))
gen8_disable_rps_interrupts(dev);
else
gen6_disable_rps_interrupts(dev);
gen6_disable_rps_interrupts(dev);
}
static void cherryview_disable_rps(struct drm_device *dev)
@ -4584,7 +4572,7 @@ static void cherryview_disable_rps(struct drm_device *dev)
I915_WRITE(GEN6_RC_CONTROL, 0);
gen8_disable_rps_interrupts(dev);
gen6_disable_rps_interrupts(dev);
}
static void valleyview_disable_rps(struct drm_device *dev)
@ -4663,17 +4651,6 @@ int intel_enable_rc6(const struct drm_device *dev)
return i915.enable_rc6;
}
static void gen8_enable_rps_interrupts(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
spin_lock_irq(&dev_priv->irq_lock);
WARN_ON(dev_priv->rps.pm_iir);
gen6_enable_pm_irq(dev_priv, dev_priv->pm_rps_events);
I915_WRITE(GEN8_GT_IIR(2), dev_priv->pm_rps_events);
spin_unlock_irq(&dev_priv->irq_lock);
}
static void gen6_enable_rps_interrupts(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@ -4681,7 +4658,7 @@ static void gen6_enable_rps_interrupts(struct drm_device *dev)
spin_lock_irq(&dev_priv->irq_lock);
WARN_ON(dev_priv->rps.pm_iir);
gen6_enable_pm_irq(dev_priv, dev_priv->pm_rps_events);
I915_WRITE(GEN6_PMIIR, dev_priv->pm_rps_events);
I915_WRITE(gen6_pm_iir(dev_priv), dev_priv->pm_rps_events);
spin_unlock_irq(&dev_priv->irq_lock);
}
@ -4823,7 +4800,7 @@ static void gen8_enable_rps(struct drm_device *dev)
gen6_set_rps(dev, (I915_READ(GEN6_GT_PERF_STATUS) & 0xff00) >> 8);
gen8_enable_rps_interrupts(dev);
gen6_enable_rps_interrupts(dev);
gen6_gt_force_wake_put(dev_priv, FORCEWAKE_ALL);
}
@ -5414,7 +5391,7 @@ static void cherryview_enable_rps(struct drm_device *dev)
valleyview_set_rps(dev_priv->dev, dev_priv->rps.efficient_freq);
gen8_enable_rps_interrupts(dev);
gen6_enable_rps_interrupts(dev);
gen6_gt_force_wake_put(dev_priv, FORCEWAKE_ALL);
}