[v4,1/9] drm/i915/guc: Move GuC interrupts related functions from i915_irq.c to intel_guc.c
diff mbox

Message ID 1515142021-24232-2-git-send-email-sagar.a.kamble@intel.com
State New
Headers show

Commit Message

sagar.a.kamble@intel.com Jan. 5, 2018, 8:46 a.m. UTC
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 log and i915 irq handling we are keeping them grouped
in intel_guc.c instead of intel_uc.c. Also update the function parameter
from dev_priv to intel_guc struct while we are at it.

In order to separate GuC IRQ handling functions from i915_irq.c we need
to export the low level pm irq handlers. Export pm_iir, reset_pm_iir and
enable/disable_pm_irq functions.

v2-v3: Rebase.

v4: Squashed patches to change the parameter and move to guc.c. Using
readily available guc struct instead of referencing via dev_priv. (Michal)
s/intel_*_guc_interrupts/intel_guc_*_interrupts. (Chris)

Suggested-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> #v3
---
 drivers/gpu/drm/i915/i915_irq.c      | 78 +++-------------------------------
 drivers/gpu/drm/i915/intel_drv.h     |  7 ++--
 drivers/gpu/drm/i915/intel_guc.c     | 81 ++++++++++++++++++++++++++++++++++--
 drivers/gpu/drm/i915/intel_guc.h     |  4 ++
 drivers/gpu/drm/i915/intel_guc_log.c |  8 ++--
 drivers/gpu/drm/i915/intel_uc.c      |  8 ++--
 6 files changed, 98 insertions(+), 88 deletions(-)

Patch
diff mbox

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 3517c65..a1ae057 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
@@ -306,7 +305,7 @@  void gen5_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask)
 	ilk_update_gt_irq(dev_priv, mask, 0);
 }
 
-static i915_reg_t gen6_pm_iir(struct drm_i915_private *dev_priv)
+i915_reg_t gen6_pm_iir(struct drm_i915_private *dev_priv)
 {
 	return INTEL_GEN(dev_priv) >= 8 ? GEN8_GT_IIR(2) : GEN6_PMIIR;
 }
@@ -369,7 +368,7 @@  void gen6_mask_pm_irq(struct drm_i915_private *dev_priv, u32 mask)
 	__gen6_mask_pm_irq(dev_priv, mask);
 }
 
-static void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32 reset_mask)
+void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32 reset_mask)
 {
 	i915_reg_t reg = gen6_pm_iir(dev_priv);
 
@@ -380,7 +379,7 @@  static void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32 reset_mask)
 	POSTING_READ(reg);
 }
 
-static void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, u32 enable_mask)
+void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, u32 enable_mask)
 {
 	lockdep_assert_held(&dev_priv->irq_lock);
 
@@ -390,7 +389,7 @@  static void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, u32 enable_mas
 	/* unmask_pm_irq provides an implicit barrier (POSTING_READ) */
 }
 
-static void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, u32 disable_mask)
+void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, u32 disable_mask)
 {
 	lockdep_assert_held(&dev_priv->irq_lock);
 
@@ -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->guc, 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 30f791f..a70fe4c 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1234,8 +1234,12 @@  void intel_pch_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
 /* i915_irq.c */
 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);
+i915_reg_t gen6_pm_iir(struct drm_i915_private *dev_priv);
 void gen6_mask_pm_irq(struct drm_i915_private *dev_priv, u32 mask);
 void gen6_unmask_pm_irq(struct drm_i915_private *dev_priv, u32 mask);
+void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32 reset_mask);
+void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, u32 enable_mask);
+void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, u32 disable_mask);
 void gen6_reset_rps_interrupts(struct drm_i915_private *dev_priv);
 void gen6_enable_rps_interrupts(struct drm_i915_private *dev_priv);
 void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv);
@@ -1262,9 +1266,6 @@  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 50b4725..7278bde 100644
--- a/drivers/gpu/drm/i915/intel_guc.c
+++ b/drivers/gpu/drm/i915/intel_guc.c
@@ -257,7 +257,7 @@  void intel_guc_init_params(struct intel_guc *guc)
 	/* If GuC submission is enabled, set up additional parameters here */
 	if (USES_GUC_SUBMISSION(dev_priv)) {
 		u32 ads = guc_ggtt_offset(guc->ads_vma) >> PAGE_SHIFT;
-		u32 pgs = guc_ggtt_offset(dev_priv->guc.stage_desc_pool);
+		u32 pgs = guc_ggtt_offset(guc->stage_desc_pool);
 		u32 ctx_in_16 = GUC_MAX_STAGE_DESCRIPTORS / 16;
 
 		params[GUC_CTL_DEBUG] |= ads << GUC_ADS_ADDR_SHIFT;
@@ -400,7 +400,7 @@  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_guc_disable_interrupts(guc);
 
 	data[0] = INTEL_GUC_ACTION_ENTER_S_STATE;
 	/* any value greater than GUC_POWER_D0 */
@@ -446,7 +446,7 @@  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_guc_enable_interrupts(guc);
 
 	data[0] = INTEL_GUC_ACTION_EXIT_S_STATE;
 	data[1] = GUC_POWER_D0;
@@ -507,3 +507,78 @@  u32 intel_guc_wopcm_size(struct drm_i915_private *dev_priv)
 
 	return wopcm_size;
 }
+
+void intel_guc_reset_interrupts(struct intel_guc *guc)
+{
+	struct drm_i915_private *dev_priv = guc_to_i915(guc);
+
+	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_guc_enable_interrupts(struct intel_guc *guc)
+{
+	struct drm_i915_private *dev_priv = guc_to_i915(guc);
+
+	spin_lock_irq(&dev_priv->irq_lock);
+	if (!guc->interrupts_enabled) {
+		WARN_ON_ONCE(I915_READ(gen6_pm_iir(dev_priv)) &
+				       dev_priv->pm_guc_events);
+		guc->interrupts_enabled = true;
+		gen6_enable_pm_irq(dev_priv, dev_priv->pm_guc_events);
+	}
+	spin_unlock_irq(&dev_priv->irq_lock);
+}
+
+void intel_guc_disable_interrupts(struct intel_guc *guc)
+{
+	struct drm_i915_private *dev_priv = guc_to_i915(guc);
+
+	spin_lock_irq(&dev_priv->irq_lock);
+	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_guc_reset_interrupts(guc);
+}
+
+void intel_guc_irq_handler(struct intel_guc *guc, u32 gt_iir)
+{
+	struct drm_i915_private *dev_priv = guc_to_i915(guc);
+
+	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(guc->log.runtime.flush_wq,
+				   &guc->log.runtime.flush_work);
+
+			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 52856a9..1df9222 100644
--- a/drivers/gpu/drm/i915/intel_guc.h
+++ b/drivers/gpu/drm/i915/intel_guc.h
@@ -131,5 +131,9 @@  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_guc_reset_interrupts(struct intel_guc *guc);
+void intel_guc_enable_interrupts(struct intel_guc *guc);
+void intel_guc_disable_interrupts(struct intel_guc *guc);
+void intel_guc_irq_handler(struct intel_guc *guc, 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 eaedd63..84ae6f8 100644
--- a/drivers/gpu/drm/i915/intel_guc_log.c
+++ b/drivers/gpu/drm/i915/intel_guc_log.c
@@ -480,14 +480,12 @@  static void guc_log_capture_logs(struct intel_guc *guc)
 
 static void guc_flush_logs(struct intel_guc *guc)
 {
-	struct drm_i915_private *dev_priv = guc_to_i915(guc);
-
 	if (!USES_GUC_SUBMISSION(dev_priv) ||
 	    (i915_modparams.guc_log_level < 0))
 		return;
 
 	/* First disable the interrupts, will be renabled afterwards */
-	gen9_disable_guc_interrupts(dev_priv);
+	intel_guc_disable_interrupts(guc);
 
 	/* Before initiating the forceful flush, wait for any pending/ongoing
 	 * flush to complete otherwise forceful flush may not actually happen.
@@ -605,7 +603,7 @@  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_guc_enable_interrupts(guc);
 	} else {
 		/* Once logging is disabled, GuC won't generate logs & send an
 		 * interrupt. But there could be some data in the log buffer
@@ -639,7 +637,7 @@  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_guc_disable_interrupts(&dev_priv->guc);
 	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 907deac..16ed558 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -271,7 +271,7 @@  int intel_uc_init_hw(struct drm_i915_private *dev_priv)
 	GEM_BUG_ON(!HAS_GUC(dev_priv));
 
 	guc_disable_communication(guc);
-	gen9_reset_guc_interrupts(dev_priv);
+	intel_guc_reset_interrupts(guc);
 
 	/* init WOPCM */
 	I915_WRITE(GUC_WOPCM_SIZE, intel_guc_wopcm_size(dev_priv));
@@ -325,7 +325,7 @@  int intel_uc_init_hw(struct drm_i915_private *dev_priv)
 
 	if (USES_GUC_SUBMISSION(dev_priv)) {
 		if (i915_modparams.guc_log_level >= 0)
-			gen9_enable_guc_interrupts(dev_priv);
+			intel_guc_enable_interrupts(guc);
 
 		ret = intel_guc_submission_enable(guc);
 		if (ret)
@@ -345,7 +345,7 @@  int intel_uc_init_hw(struct drm_i915_private *dev_priv)
 	 * We've failed to load the firmware :(
 	 */
 err_interrupts:
-	gen9_disable_guc_interrupts(dev_priv);
+	intel_guc_disable_interrupts(guc);
 err_communication:
 	guc_disable_communication(guc);
 err_log_capture:
@@ -379,5 +379,5 @@  void intel_uc_fini_hw(struct drm_i915_private *dev_priv)
 	guc_disable_communication(guc);
 
 	if (USES_GUC_SUBMISSION(dev_priv))
-		gen9_disable_guc_interrupts(dev_priv);
+		intel_guc_disable_interrupts(guc);
 }