Commit a72fbc3a authored by Imre Deak's avatar Imre Deak Committed by Daniel Vetter
Browse files

drm/i915: unify gen6/gen8 pm irq helpers 



The helpers to enable/disable PM IRQs for GEN6 and GEN8 are the same
except for the PM interrupt mask register, so abstract away this
register in the GEN6 versions and use these everywhere.

No functional change.

Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Reviewed-by: default avatarPaulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 95289009

drivers/gpu/drm/i915/i915_irq.c

+10 −49
Original line number Diff line number Diff line
@@ -200,6 +200,11 @@ void gen5_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask) 
	ilk_update_gt_irq(dev_priv, mask, 0);

}



static u32 gen6_pm_imr(struct drm_i915_private *dev_priv)

{

	return INTEL_INFO(dev_priv)->gen >= 8 ? GEN8_GT_IMR(2) : GEN6_PMIMR;

}



/**

  * snb_update_pm_irq - update GEN6_PMIMR

  * @dev_priv: driver private
@@ -223,8 +228,8 @@ static void snb_update_pm_irq(struct drm_i915_private *dev_priv, 


	if (new_val != dev_priv->pm_irq_mask) {

		dev_priv->pm_irq_mask = new_val;

		I915_WRITE(GEN6_PMIMR, dev_priv->pm_irq_mask);

		POSTING_READ(GEN6_PMIMR);

		I915_WRITE(gen6_pm_imr(dev_priv), dev_priv->pm_irq_mask);

		POSTING_READ(gen6_pm_imr(dev_priv));

	}

}
@@ -238,46 +243,6 @@ void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask) 
	snb_update_pm_irq(dev_priv, mask, 0);

}



/**

  * bdw_update_pm_irq - update GT interrupt 2

  * @dev_priv: driver private

  * @interrupt_mask: mask of interrupt bits to update

  * @enabled_irq_mask: mask of interrupt bits to enable

  *

  * Copied from the snb function, updated with relevant register offsets

  */

static void bdw_update_pm_irq(struct drm_i915_private *dev_priv,

			      uint32_t interrupt_mask,

			      uint32_t enabled_irq_mask)

{

	uint32_t new_val;



	assert_spin_locked(&dev_priv->irq_lock);



	if (WARN_ON(!intel_irqs_enabled(dev_priv)))

		return;



	new_val = dev_priv->pm_irq_mask;

	new_val &= ~interrupt_mask;

	new_val |= (~enabled_irq_mask & interrupt_mask);



	if (new_val != dev_priv->pm_irq_mask) {

		dev_priv->pm_irq_mask = new_val;

		I915_WRITE(GEN8_GT_IMR(2), dev_priv->pm_irq_mask);

		POSTING_READ(GEN8_GT_IMR(2));

	}

}



void gen8_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask)

{

	bdw_update_pm_irq(dev_priv, mask, mask);

}



void gen8_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask)

{

	bdw_update_pm_irq(dev_priv, mask, 0);

}



/**

 * ibx_display_interrupt_update - update SDEIMR

 * @dev_priv: driver private
@@ -1118,12 +1083,8 @@ static void gen6_pm_rps_work(struct work_struct *work) 
	spin_lock_irq(&dev_priv->irq_lock);

	pm_iir = dev_priv->rps.pm_iir;

	dev_priv->rps.pm_iir = 0;

	if (INTEL_INFO(dev_priv->dev)->gen >= 8)

		gen8_enable_pm_irq(dev_priv, dev_priv->pm_rps_events);

	else {

		/* Make sure not to corrupt PMIMR state used by ringbuffer */

	/* Make sure not to corrupt PMIMR state used by ringbuffer on GEN6 */

	gen6_enable_pm_irq(dev_priv, dev_priv->pm_rps_events);

	}

	spin_unlock_irq(&dev_priv->irq_lock);



	/* Make sure we didn't queue anything we're not going to process. */
@@ -1332,7 +1293,7 @@ static void gen8_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir) 


	spin_lock(&dev_priv->irq_lock);

	dev_priv->rps.pm_iir |= pm_iir & dev_priv->pm_rps_events;

	gen8_disable_pm_irq(dev_priv, pm_iir & dev_priv->pm_rps_events);

	gen6_disable_pm_irq(dev_priv, pm_iir & dev_priv->pm_rps_events);

	spin_unlock(&dev_priv->irq_lock);



	queue_work(dev_priv->wq, &dev_priv->rps.work);

drivers/gpu/drm/i915/intel_drv.h

+0 −2
Original line number Diff line number Diff line
@@ -784,8 +784,6 @@ void gen5_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask); 
void gen5_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);

void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);

void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);

void gen8_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);

void gen8_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);

void intel_runtime_pm_disable_interrupts(struct drm_i915_private *dev_priv);

void intel_runtime_pm_enable_interrupts(struct drm_i915_private *dev_priv);

static inline bool intel_irqs_enabled(struct drm_i915_private *dev_priv)

drivers/gpu/drm/i915/intel_pm.c

+1 −1
Original line number Diff line number Diff line
@@ -4669,7 +4669,7 @@ static void gen8_enable_rps_interrupts(struct drm_device *dev) 


	spin_lock_irq(&dev_priv->irq_lock);

	WARN_ON(dev_priv->rps.pm_iir);

	gen8_enable_pm_irq(dev_priv, dev_priv->pm_rps_events);

	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);

}

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