[PATCH 6/6] drm/i915/guc: Fix GuC cleanup in unload path

[Sagar Arun Kamble]

We ensure that GuC is completely suspended and client is destroyed
in i915_gem_suspend during i915_driver_unload. So now intel_uc_fini_hw
should just take care of cleanup,
hence s/intel_uc_fini_hw/intel_uc_cleanup. Correspondingly
we also updated as s/i915_guc_submission_fini/i915_guc_submission_cleanup
Other functionality to disable communication, disable interrupts and
update of ggtt.invalidate is taken care by intel_uc_suspend.
With this patch we are also doing guc_free_load_err_log only
if i915.enable_guc_loading is set.

v2: Rebase w.r.t removal of GuC code restructuring.

v3: Removed intel_guc_cleanup. (Michal Wajdeczko)

v4: guc_free_load_err_log() needs to be called without checking
i915.enable_guc_loading as this param is cleared on failure.
(Michal Wajdeczko)

Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
Cc: Michał Winiarski <michal.winiarski at intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c            |  2 +-
 drivers/gpu/drm/i915/i915_guc_submission.c |  2 +-
 drivers/gpu/drm/i915/intel_uc.c            | 14 ++++----------
 drivers/gpu/drm/i915/intel_uc.h            |  4 ++--
 4 files changed, 8 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 6f5016f..740c75f 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -602,7 +602,7 @@ static void i915_gem_fini(struct drm_i915_private *dev_priv)
 	i915_gem_drain_workqueue(dev_priv);
 
 	mutex_lock(&dev_priv->drm.struct_mutex);
-	intel_uc_fini_hw(dev_priv);
+	intel_uc_cleanup(dev_priv);
 	i915_gem_cleanup_engines(dev_priv);
 	i915_gem_contexts_fini(dev_priv);
 	i915_gem_cleanup_userptr(dev_priv);
diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 09fb156..c910d79 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -1047,7 +1047,7 @@ int i915_guc_submission_init(struct drm_i915_private *dev_priv)
 	return ret;
 }
 
-void i915_guc_submission_fini(struct drm_i915_private *dev_priv)
+void i915_guc_submission_cleanup(struct drm_i915_private *dev_priv)
 {
 	struct intel_guc *guc = &dev_priv->guc;
 
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index d22584e..2f5aacc 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -418,7 +418,7 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
 	guc_capture_load_err_log(guc);
 err_submission:
 	if (i915.enable_guc_submission)
-		i915_guc_submission_fini(dev_priv);
+		i915_guc_submission_cleanup(dev_priv);
 err_guc:
 	i915_ggtt_disable_guc(dev_priv);
 
@@ -439,21 +439,15 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
 	return ret;
 }
 
-void intel_uc_fini_hw(struct drm_i915_private *dev_priv)
+void intel_uc_cleanup(struct drm_i915_private *dev_priv)
 {
 	guc_free_load_err_log(&dev_priv->guc);
 
 	if (!i915.enable_guc_loading)
 		return;
 
-	guc_disable_communication(&dev_priv->guc);
-
-	if (i915.enable_guc_submission) {
-		gen9_disable_guc_interrupts(dev_priv);
-		i915_guc_submission_fini(dev_priv);
-	}
-
-	i915_ggtt_disable_guc(dev_priv);
+	if (i915.enable_guc_submission)
+		i915_guc_submission_cleanup(dev_priv);
 }
 
 int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len)
diff --git a/drivers/gpu/drm/i915/intel_uc.h b/drivers/gpu/drm/i915/intel_uc.h
index 7b9ac3e..c6038de 100644
--- a/drivers/gpu/drm/i915/intel_uc.h
+++ b/drivers/gpu/drm/i915/intel_uc.h
@@ -207,7 +207,7 @@ struct intel_huc {
 void intel_uc_init_fw(struct drm_i915_private *dev_priv);
 void intel_uc_fini_fw(struct drm_i915_private *dev_priv);
 int intel_uc_init_hw(struct drm_i915_private *dev_priv);
-void intel_uc_fini_hw(struct drm_i915_private *dev_priv);
+void intel_uc_cleanup(struct drm_i915_private *dev_priv);
 int intel_uc_runtime_suspend(struct drm_i915_private *dev_priv);
 int intel_uc_runtime_resume(struct drm_i915_private *dev_priv);
 int intel_uc_suspend(struct drm_i915_private *dev_priv);
@@ -238,7 +238,7 @@ static inline void intel_guc_notify(struct intel_guc *guc)
 int i915_guc_submission_init(struct drm_i915_private *dev_priv);
 int i915_guc_submission_enable(struct drm_i915_private *dev_priv);
 void i915_guc_submission_disable(struct drm_i915_private *dev_priv);
-void i915_guc_submission_fini(struct drm_i915_private *dev_priv);
+void i915_guc_submission_cleanup(struct drm_i915_private *dev_priv);
 struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size);
 
 /* intel_guc_log.c */
-- 
1.9.1