From: Imre Deak Date: Wed, 5 Nov 2014 18:48:42 +0000 (+0200) Subject: drm/i915: unify gen6/gen8 rps irq enable/disable X-Git-Tag: v3.19-rc1~73^2~14^2~108 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=20415c5d4ecc0075cc7f5cb3f876e3191e9433ce;p=platform%2Fkernel%2Flinux-exynos.git 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 Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 9851af7..ad4ffa9 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -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; - - 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); + return INTEL_INFO(dev_priv)->gen >= 8 ? GEN8_GT_IIR(2) : GEN6_PMIIR; +} - 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); }