[PATCH 02/12] drm/i915/guc: Move GuC interrupts related functions from i915_irq.c to intel_guc.c

Sagar Arun Kamble sagar.a.kamble at intel.com
Tue Oct 31 17:53:02 UTC 2017


GuC interrupts handling is core GuC functionality. Better to keep it
with other core functions in intel_guc.c. Since they are used from
uC functions, GuC logging, i915 irq handling keeping them grouped in
intel_guc.c instead of intel_uc.c.

v2: Rebase.

Suggested-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 drivers/gpu/drm/i915/i915_irq.c      | 70 +----------------------------------
 drivers/gpu/drm/i915/intel_drv.h     |  3 --
 drivers/gpu/drm/i915/intel_guc.c     | 71 +++++++++++++++++++++++++++++++++++-
 drivers/gpu/drm/i915/intel_guc.h     |  4 ++
 drivers/gpu/drm/i915/intel_guc_log.c |  6 +--
 drivers/gpu/drm/i915/intel_uc.c      |  8 ++--
 6 files changed, 81 insertions(+), 81 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 1b6a1cb..b114e84 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -203,7 +203,6 @@ static void gen2_assert_iir_is_zero(struct drm_i915_private *dev_priv,
 } while (0)
 
 static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir);
-static void gen9_guc_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir);
 
 /* For display hotplug interrupt */
 static inline void
@@ -450,38 +449,6 @@ void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv)
 	gen6_reset_rps_interrupts(dev_priv);
 }
 
-void gen9_reset_guc_interrupts(struct drm_i915_private *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);
-}
-
-void gen9_enable_guc_interrupts(struct drm_i915_private *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)) &
-				       dev_priv->pm_guc_events);
-		dev_priv->guc.interrupts_enabled = true;
-		gen6_enable_pm_irq(dev_priv, dev_priv->pm_guc_events);
-	}
-	spin_unlock_irq(&dev_priv->irq_lock);
-}
-
-void gen9_disable_guc_interrupts(struct drm_i915_private *dev_priv)
-{
-	spin_lock_irq(&dev_priv->irq_lock);
-	dev_priv->guc.interrupts_enabled = false;
-
-	gen6_disable_pm_irq(dev_priv, dev_priv->pm_guc_events);
-
-	spin_unlock_irq(&dev_priv->irq_lock);
-	synchronize_irq(dev_priv->drm.irq);
-
-	gen9_reset_guc_interrupts(dev_priv);
-}
-
 /**
  * bdw_update_port_irq - update DE port interrupt
  * @dev_priv: driver private
@@ -1480,7 +1447,7 @@ static void gen8_gt_irq_handler(struct drm_i915_private *dev_priv,
 		gen6_rps_irq_handler(dev_priv, gt_iir[2]);
 
 	if (gt_iir[2] & dev_priv->pm_guc_events)
-		gen9_guc_irq_handler(dev_priv, gt_iir[2]);
+		intel_guc_irq_handler(dev_priv, gt_iir[2]);
 }
 
 static bool bxt_port_hotplug_long_detect(enum port port, u32 val)
@@ -1757,41 +1724,6 @@ static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir)
 	}
 }
 
-static void gen9_guc_irq_handler(struct drm_i915_private *dev_priv, u32 gt_iir)
-{
-	if (gt_iir & GEN9_GUC_TO_HOST_INT_EVENT) {
-		/* Sample the log buffer flush related bits & clear them out now
-		 * itself from the message identity register to minimize the
-		 * probability of losing a flush interrupt, when there are back
-		 * to back flush interrupts.
-		 * There can be a new flush interrupt, for different log buffer
-		 * type (like for ISR), whilst Host is handling one (for DPC).
-		 * Since same bit is used in message register for ISR & DPC, it
-		 * could happen that GuC sets the bit for 2nd interrupt but Host
-		 * clears out the bit on handling the 1st interrupt.
-		 */
-		u32 msg, flush;
-
-		msg = I915_READ(SOFT_SCRATCH(15));
-		flush = msg & (INTEL_GUC_RECV_MSG_CRASH_DUMP_POSTED |
-			       INTEL_GUC_RECV_MSG_FLUSH_LOG_BUFFER);
-		if (flush) {
-			/* Clear the message bits that are handled */
-			I915_WRITE(SOFT_SCRATCH(15), msg & ~flush);
-
-			/* Handle flush interrupt in bottom half */
-			queue_work(dev_priv->guc.log.runtime.flush_wq,
-				   &dev_priv->guc.log.runtime.flush_work);
-
-			dev_priv->guc.log.flush_interrupt_count++;
-		} else {
-			/* Not clearing of unhandled event bits won't result in
-			 * re-triggering of the interrupt.
-			 */
-		}
-	}
-}
-
 static void i9xx_pipestat_irq_reset(struct drm_i915_private *dev_priv)
 {
 	enum pipe pipe;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 4acfd02..0f80d4c 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1265,9 +1265,6 @@ void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv,
 				     u8 pipe_mask);
 void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
 				     u8 pipe_mask);
-void gen9_reset_guc_interrupts(struct drm_i915_private *dev_priv);
-void gen9_enable_guc_interrupts(struct drm_i915_private *dev_priv);
-void gen9_disable_guc_interrupts(struct drm_i915_private *dev_priv);
 
 /* intel_crt.c */
 void intel_crt_init(struct drm_i915_private *dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
index f74d50f..8d170260 100644
--- a/drivers/gpu/drm/i915/intel_guc.c
+++ b/drivers/gpu/drm/i915/intel_guc.c
@@ -273,7 +273,7 @@ int intel_guc_suspend(struct drm_i915_private *dev_priv)
 	if (guc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS)
 		return 0;
 
-	gen9_disable_guc_interrupts(dev_priv);
+	intel_disable_guc_interrupts(dev_priv);
 
 	data[0] = INTEL_GUC_ACTION_ENTER_S_STATE;
 	/* any value greater than GUC_POWER_D0 */
@@ -296,7 +296,7 @@ int intel_guc_resume(struct drm_i915_private *dev_priv)
 		return 0;
 
 	if (i915_modparams.guc_log_level >= 0)
-		gen9_enable_guc_interrupts(dev_priv);
+		intel_enable_guc_interrupts(dev_priv);
 
 	data[0] = INTEL_GUC_ACTION_EXIT_S_STATE;
 	data[1] = GUC_POWER_D0;
@@ -357,3 +357,70 @@ u32 intel_guc_wopcm_size(struct drm_i915_private *dev_priv)
 
 	return wopcm_size;
 }
+
+void intel_reset_guc_interrupts(struct drm_i915_private *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);
+}
+
+void intel_enable_guc_interrupts(struct drm_i915_private *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)) &
+				       dev_priv->pm_guc_events);
+		dev_priv->guc.interrupts_enabled = true;
+		gen6_enable_pm_irq(dev_priv, dev_priv->pm_guc_events);
+	}
+	spin_unlock_irq(&dev_priv->irq_lock);
+}
+
+void intel_disable_guc_interrupts(struct drm_i915_private *dev_priv)
+{
+	spin_lock_irq(&dev_priv->irq_lock);
+	dev_priv->guc.interrupts_enabled = false;
+
+	gen6_disable_pm_irq(dev_priv, dev_priv->pm_guc_events);
+
+	spin_unlock_irq(&dev_priv->irq_lock);
+	synchronize_irq(dev_priv->drm.irq);
+
+	intel_reset_guc_interrupts(dev_priv);
+}
+
+void intel_guc_irq_handler(struct drm_i915_private *dev_priv, u32 gt_iir)
+{
+	if (gt_iir & GEN9_GUC_TO_HOST_INT_EVENT) {
+		/* Sample the log buffer flush related bits & clear them out now
+		 * itself from the message identity register to minimize the
+		 * probability of losing a flush interrupt, when there are back
+		 * to back flush interrupts.
+		 * There can be a new flush interrupt, for different log buffer
+		 * type (like for ISR), whilst Host is handling one (for DPC).
+		 * Since same bit is used in message register for ISR & DPC, it
+		 * could happen that GuC sets the bit for 2nd interrupt but Host
+		 * clears out the bit on handling the 1st interrupt.
+		 */
+		u32 msg, flush;
+
+		msg = I915_READ(SOFT_SCRATCH(15));
+		flush = msg & (INTEL_GUC_RECV_MSG_CRASH_DUMP_POSTED |
+			       INTEL_GUC_RECV_MSG_FLUSH_LOG_BUFFER);
+		if (flush) {
+			/* Clear the message bits that are handled */
+			I915_WRITE(SOFT_SCRATCH(15), msg & ~flush);
+
+			/* Handle flush interrupt in bottom half */
+			queue_work(dev_priv->guc.log.runtime.flush_wq,
+				   &dev_priv->guc.log.runtime.flush_work);
+
+			dev_priv->guc.log.flush_interrupt_count++;
+		} else {
+			/* Not clearing of unhandled event bits won't result in
+			 * re-triggering of the interrupt.
+			 */
+		}
+	}
+}
diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h
index 607e025..4976ff3 100644
--- a/drivers/gpu/drm/i915/intel_guc.h
+++ b/drivers/gpu/drm/i915/intel_guc.h
@@ -127,5 +127,9 @@ static inline u32 guc_ggtt_offset(struct i915_vma *vma)
 int intel_guc_resume(struct drm_i915_private *dev_priv);
 struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size);
 u32 intel_guc_wopcm_size(struct drm_i915_private *dev_priv);
+void intel_reset_guc_interrupts(struct drm_i915_private *dev_priv);
+void intel_enable_guc_interrupts(struct drm_i915_private *dev_priv);
+void intel_disable_guc_interrupts(struct drm_i915_private *dev_priv);
+void intel_guc_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir);
 
 #endif
diff --git a/drivers/gpu/drm/i915/intel_guc_log.c b/drivers/gpu/drm/i915/intel_guc_log.c
index 76d3eb1..8120208 100644
--- a/drivers/gpu/drm/i915/intel_guc_log.c
+++ b/drivers/gpu/drm/i915/intel_guc_log.c
@@ -510,7 +510,7 @@ static void guc_flush_logs(struct intel_guc *guc)
 		return;
 
 	/* First disable the interrupts, will be renabled afterwards */
-	gen9_disable_guc_interrupts(dev_priv);
+	intel_disable_guc_interrupts(dev_priv);
 
 	/* Before initiating the forceful flush, wait for any pending/ongoing
 	 * flush to complete otherwise forceful flush may not actually happen.
@@ -628,7 +628,7 @@ int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val)
 		}
 
 		/* GuC logging is currently the only user of Guc2Host interrupts */
-		gen9_enable_guc_interrupts(dev_priv);
+		intel_enable_guc_interrupts(dev_priv);
 	} else {
 		/* Once logging is disabled, GuC won't generate logs & send an
 		 * interrupt. But there could be some data in the log buffer
@@ -662,7 +662,7 @@ 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 */
-	gen9_disable_guc_interrupts(dev_priv);
+	intel_disable_guc_interrupts(dev_priv);
 	guc_log_runtime_destroy(&dev_priv->guc);
 	mutex_unlock(&dev_priv->drm.struct_mutex);
 }
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index 25bd162..b9b9947a0 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -158,7 +158,7 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
 		return 0;
 
 	guc_disable_communication(guc);
-	gen9_reset_guc_interrupts(dev_priv);
+	intel_reset_guc_interrupts(dev_priv);
 
 	/* We need to notify the guc whenever we change the GGTT */
 	i915_ggtt_enable_guc(dev_priv);
@@ -215,7 +215,7 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
 	intel_huc_auth(&dev_priv->huc);
 	if (i915_modparams.enable_guc_submission) {
 		if (i915_modparams.guc_log_level >= 0)
-			gen9_enable_guc_interrupts(dev_priv);
+			intel_enable_guc_interrupts(dev_priv);
 
 		ret = i915_guc_submission_enable(dev_priv);
 		if (ret)
@@ -241,7 +241,7 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
 	 */
 err_interrupts:
 	guc_disable_communication(guc);
-	gen9_disable_guc_interrupts(dev_priv);
+	intel_disable_guc_interrupts(dev_priv);
 err_log_capture:
 	guc_capture_load_err_log(guc);
 err_submission:
@@ -282,7 +282,7 @@ void intel_uc_fini_hw(struct drm_i915_private *dev_priv)
 	guc_disable_communication(&dev_priv->guc);
 
 	if (i915_modparams.enable_guc_submission) {
-		gen9_disable_guc_interrupts(dev_priv);
+		intel_disable_guc_interrupts(dev_priv);
 		i915_guc_submission_fini(dev_priv);
 	}
 
-- 
1.9.1



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