[Intel-gfx] [PATCH v8 04/12] drm/i915: Introduce i915_gem_fini_hw for symmetry with i915_gem_init_hw

[Michal Wajdeczko]

We have i915_gem_init_hw function that on failure requires some
cleanup in uC and then in other places we were trying to do
such cleanup directly. Let's fix that by adding i915_gem_fini_hw
for nice symmetry with init_hw and call it on cleanup paths.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
Cc: Sagar Arun Kamble <sagar.a.kamble at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_drv.h |  1 +
 drivers/gpu/drm/i915/i915_gem.c | 13 +++++++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f8bc276..dbd95a4 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3144,6 +3144,7 @@ void i915_gem_reset_engine(struct intel_engine_cs *engine,
 int __must_check i915_gem_init_hw(struct drm_i915_private *dev_priv);
 void i915_gem_init_swizzling(struct drm_i915_private *dev_priv);
 void i915_gem_fini(struct drm_i915_private *dev_priv);
+void i915_gem_fini_hw(struct drm_i915_private *dev_priv);
 void i915_gem_cleanup_engines(struct drm_i915_private *dev_priv);
 int i915_gem_wait_for_idle(struct drm_i915_private *dev_priv,
 			   unsigned int flags);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index fb99485..6f71099 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -5257,6 +5257,15 @@ int i915_gem_init_hw(struct drm_i915_private *dev_priv)
 	goto out;
 }
 
+void i915_gem_fini_hw(struct drm_i915_private *dev_priv)
+{
+	intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
+
+	intel_uc_fini_hw(dev_priv);
+
+	intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
+}
+
 static int __intel_engines_record_defaults(struct drm_i915_private *i915)
 {
 	struct i915_gem_context *ctx;
@@ -5482,7 +5491,7 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
 err_init_hw:
 	i915_gem_wait_for_idle(dev_priv, I915_WAIT_LOCKED);
 	i915_gem_contexts_lost(dev_priv);
-	intel_uc_fini_hw(dev_priv);
+	i915_gem_fini_hw(dev_priv);
 err_uc_init:
 	intel_uc_fini(dev_priv);
 err_pm:
@@ -5526,7 +5535,7 @@ 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);
+	i915_gem_fini_hw(dev_priv);
 	intel_uc_fini(dev_priv);
 	i915_gem_cleanup_engines(dev_priv);
 	i915_gem_contexts_fini(dev_priv);
-- 
1.9.1