Re: [PATCH v5 5/7] drm/i915/guc: Fix GuC cleanup in unload path

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On 9/22/2017 2:27 AM, Michal Wajdeczko wrote:
On Thu, 21 Sep 2017 19:38:49 +0200, Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx> wrote:

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)

Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: Michał Winiarski <michal.winiarski@xxxxxxxxx>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_drv.c            |  2 +-
 drivers/gpu/drm/i915/i915_guc_submission.c |  2 +-
 drivers/gpu/drm/i915/intel_uc.c            | 16 +++++-----------
 drivers/gpu/drm/i915/intel_uc.h            |  4 ++--
 4 files changed, 9 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 8635f40..6f36ced 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 0638ac5..c720ee9 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -1050,7 +1050,7 @@ 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 7137e38..70fef90 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);
-

This should stay here, as we turn off "enable_guc_loading" flag
on any guc load failure.

Ah. right. Will update. Thanks for catching this Michal.
     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);
-    }
+    guc_free_load_err_log(&dev_priv->guc);
-    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 */

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