Disabling GuC interrupts involves access to GuC IRQ control registers
hence ensure device is RPM awake.
v1-v2: old changelog
1: Add comment about need to synchronize flush work and log runtime
destroy
2: Moved patch earlier in the series and removed comment about future
work. (Tvrtko)
v3: Added assert_rpm_wakelock_held() to gen9_*_guc_interrupts. (Chris)
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_irq.c | 6 ++++++
drivers/gpu/drm/i915/intel_guc_log.c | 3 +++
2 files changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 3517c65..85c46a2 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -452,6 +452,8 @@ void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv)
void gen9_reset_guc_interrupts(struct drm_i915_private *dev_priv)
{
+ assert_rpm_wakelock_held(dev_priv);
+
spin_lock_irq(&dev_priv->irq_lock);
gen6_reset_pm_iir(dev_priv, dev_priv->pm_guc_events);
spin_unlock_irq(&dev_priv->irq_lock);
@@ -459,6 +461,8 @@ void gen9_reset_guc_interrupts(struct drm_i915_private *dev_priv)
void gen9_enable_guc_interrupts(struct drm_i915_private *dev_priv)
{
+ assert_rpm_wakelock_held(dev_priv);
+
spin_lock_irq(&dev_priv->irq_lock);
if (!dev_priv->guc.interrupts_enabled) {
WARN_ON_ONCE(I915_READ(gen6_pm_iir(dev_priv)) &
@@ -471,6 +475,8 @@ void gen9_enable_guc_interrupts(struct drm_i915_private *dev_priv)
void gen9_disable_guc_interrupts(struct drm_i915_private *dev_priv)
{
+ assert_rpm_wakelock_held(dev_priv);
+
spin_lock_irq(&dev_priv->irq_lock);
dev_priv->guc.interrupts_enabled = false;
diff --git a/drivers/gpu/drm/i915/intel_guc_log.c b/drivers/gpu/drm/i915/intel_guc_log.c
index 2ffc966..8f2da30 100644
--- a/drivers/gpu/drm/i915/intel_guc_log.c
+++ b/drivers/gpu/drm/i915/intel_guc_log.c
@@ -639,7 +639,10 @@ void i915_guc_log_unregister(struct drm_i915_private *dev_priv)
mutex_lock(&dev_priv->drm.struct_mutex);
/* GuC logging is currently the only user of Guc2Host interrupts */
+ intel_runtime_pm_get(dev_priv);
gen9_disable_guc_interrupts(dev_priv);
+ intel_runtime_pm_put(dev_priv);
+
guc_log_runtime_destroy(&dev_priv->guc);
mutex_unlock(&dev_priv->drm.struct_mutex);
}
--
1.9.1
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