[Intel-gfx] [PATCH 3/8] drm/i915/guc: Handle GuC HW/SW state cleanup in unload path
Sagar Arun Kamble
sagar.a.kamble at intel.com
Wed Aug 9 10:23:47 UTC 2017
Teardown of GuC HW/SW state was not properly done in unload path.
During unload, we can rely on intel_guc_reset_prepare being done
as part of i915_gem_suspend for disabling GuC interfaces.
We will have to disable GuC submission prior to suspend as that involves
communication with GuC to destroy doorbell. So intel_uc_fini_hw has to
be called as part of i915_gem_suspend during unload as that really
takes care of finishing the GuC operations. Created new parameter for
i915_gem_suspend to handle unload/suspend path w.r.t gem and GuC suspend.
GuC related allocations are cleaned up as part of intel_uc_cleanup_hw.
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
---
drivers/gpu/drm/i915/i915_drv.c | 8 ++++----
drivers/gpu/drm/i915/i915_drv.h | 3 ++-
drivers/gpu/drm/i915/i915_gem.c | 8 ++++++--
drivers/gpu/drm/i915/intel_guc.c | 13 +++++++++++++
drivers/gpu/drm/i915/intel_guc.h | 1 +
drivers/gpu/drm/i915/intel_uc.c | 14 +++++---------
drivers/gpu/drm/i915/intel_uc.h | 1 +
7 files changed, 32 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 218a8e1..c3fb73f 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -599,7 +599,7 @@ 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_hw(dev_priv);
i915_gem_cleanup_engines(dev_priv);
i915_gem_contexts_fini(dev_priv);
i915_gem_cleanup_userptr(dev_priv);
@@ -680,7 +680,7 @@ static int i915_load_modeset_init(struct drm_device *dev)
return 0;
cleanup_gem:
- if (i915_gem_suspend(dev_priv))
+ if (i915_gem_suspend(dev_priv, true))
DRM_ERROR("failed to idle hardware; continuing to unload!\n");
i915_gem_fini(dev_priv);
cleanup_uc:
@@ -1373,7 +1373,7 @@ void i915_driver_unload(struct drm_device *dev)
i915_driver_unregister(dev_priv);
- if (i915_gem_suspend(dev_priv))
+ if (i915_gem_suspend(dev_priv, true))
DRM_ERROR("failed to idle hardware; continuing to unload!\n");
intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
@@ -1518,7 +1518,7 @@ static int i915_drm_suspend(struct drm_device *dev)
pci_save_state(pdev);
- error = i915_gem_suspend(dev_priv);
+ error = i915_gem_suspend(dev_priv, false);
if (error) {
dev_err(&pdev->dev,
"GEM idle failed, resume might fail\n");
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 085647a..dd6a3ff 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3547,7 +3547,8 @@ void i915_gem_reset_engine(struct intel_engine_cs *engine,
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);
-int __must_check i915_gem_suspend(struct drm_i915_private *dev_priv);
+int __must_check i915_gem_suspend(struct drm_i915_private *dev_priv,
+ bool unload);
void i915_gem_resume(struct drm_i915_private *dev_priv);
int i915_gem_fault(struct vm_fault *vmf);
int i915_gem_object_wait(struct drm_i915_gem_object *obj,
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e118b9a..1b1b9c7 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -4525,7 +4525,7 @@ void i915_gem_sanitize(struct drm_i915_private *i915)
}
}
-int i915_gem_suspend(struct drm_i915_private *dev_priv)
+int i915_gem_suspend(struct drm_i915_private *dev_priv, bool unload)
{
struct drm_device *dev = &dev_priv->drm;
int ret;
@@ -4572,7 +4572,11 @@ int i915_gem_suspend(struct drm_i915_private *dev_priv)
WARN_ON(dev_priv->gt.awake);
WARN_ON(!intel_engines_are_idle(dev_priv));
- intel_guc_system_suspend(&dev_priv->guc);
+ /* Handle GuC suspension in case of unloading/system suspend */
+ if (unload)
+ intel_uc_fini_hw(dev_priv);
+ else
+ intel_guc_system_suspend(&dev_priv->guc);
/*
* Neither the BIOS, ourselves or any other kernel
diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
index 3777659..f4ddfbb 100644
--- a/drivers/gpu/drm/i915/intel_guc.c
+++ b/drivers/gpu/drm/i915/intel_guc.c
@@ -313,3 +313,16 @@ int intel_guc_system_resume(struct intel_guc *guc)
*/
return ret;
}
+
+void intel_guc_fini(struct intel_guc *guc)
+{
+ struct drm_i915_private *dev_priv = guc_to_i915(guc);
+ struct drm_device *dev = &dev_priv->drm;
+
+ if (i915.enable_guc_submission) {
+ mutex_lock(&dev->struct_mutex);
+ i915_guc_submission_disable(dev_priv);
+ mutex_unlock(&dev->struct_mutex);
+ intel_guc_reset_prepare(&dev_priv->guc);
+ }
+}
diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h
index e9664bf..ed3d202 100644
--- a/drivers/gpu/drm/i915/intel_guc.h
+++ b/drivers/gpu/drm/i915/intel_guc.h
@@ -161,6 +161,7 @@ struct intel_guc {
int intel_guc_runtime_resume(struct intel_guc *guc);
int intel_guc_system_suspend(struct intel_guc *guc);
int intel_guc_system_resume(struct intel_guc *guc);
+void intel_guc_fini(struct intel_guc *guc);
static inline int intel_guc_send(struct intel_guc *guc, const u32 *action,
u32 len)
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index 95af45f..e6b9330 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -363,20 +363,16 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
void intel_uc_fini_hw(struct drm_i915_private *dev_priv)
{
+ intel_guc_fini(&dev_priv->guc);
+}
+
+void intel_uc_cleanup_hw(struct drm_i915_private *dev_priv)
+{
guc_free_load_err_log(&dev_priv->guc);
if (!i915.enable_guc_loading)
return;
if (i915.enable_guc_submission)
- i915_guc_submission_disable(dev_priv);
-
- 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);
}
diff --git a/drivers/gpu/drm/i915/intel_uc.h b/drivers/gpu/drm/i915/intel_uc.h
index 13460f8..bfe5639 100644
--- a/drivers/gpu/drm/i915/intel_uc.h
+++ b/drivers/gpu/drm/i915/intel_uc.h
@@ -97,5 +97,6 @@ struct intel_uc_fw {
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_hw(struct drm_i915_private *dev_priv);
#endif
--
1.9.1
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