After GPU reset, GuC HW needs to be reinitialized (with FW reload).
Unfortunately, we're doing some extra work there (mostly allocating stuff),
work that can be moved to guc_init and called once at driver load time.
As a side effect we're no longer hitting an assert in
i915_ggtt_enable_guc on suspend/resume.
v2: Do not duplicate disable_communication / reset_guc_interrupts
References: 04f7b24eccdf ("drm/i915/guc: Assert that we switch between known ggtt->invalidate functions")
Signed-off-by: Michał Winiarski <michal.winiarski@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.c | 1 +
drivers/gpu/drm/i915/i915_gem.c | 4 +++
drivers/gpu/drm/i915/intel_uc.c | 71 ++++++++++++++++++++++++++---------------
drivers/gpu/drm/i915/intel_uc.h | 2 ++
4 files changed, 53 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 285c8b238bff..ca9f4b2862eb 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -617,6 +617,7 @@ static void i915_gem_fini(struct drm_i915_private *dev_priv)
mutex_lock(&dev_priv->drm.struct_mutex);
intel_uc_fini_hw(dev_priv);
+ intel_uc_fini(dev_priv);
i915_gem_cleanup_engines(dev_priv);
i915_gem_contexts_fini(dev_priv);
mutex_unlock(&dev_priv->drm.struct_mutex);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 4b2ca43a610f..77e4091a7c71 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -5187,6 +5187,10 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
intel_init_gt_powersave(dev_priv);
+ ret = intel_uc_init(dev_priv);
+ if (ret)
+ goto out_unlock;
+
ret = i915_gem_init_hw(dev_priv);
if (ret)
goto out_unlock;
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index 785850838a44..907deac6e3fa 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -214,26 +214,20 @@ void intel_uc_fini_wq(struct drm_i915_private *dev_priv)
intel_guc_fini_wq(&dev_priv->guc);
}
-int intel_uc_init_hw(struct drm_i915_private *dev_priv)
+int intel_uc_init(struct drm_i915_private *dev_priv)
{
struct intel_guc *guc = &dev_priv->guc;
- struct intel_huc *huc = &dev_priv->huc;
- int ret, attempts;
+ int ret;
if (!USES_GUC(dev_priv))
return 0;
- if (!HAS_GUC(dev_priv)) {
- ret = -ENODEV;
- goto err_out;
- }
-
- guc_disable_communication(guc);
- gen9_reset_guc_interrupts(dev_priv);
+ if (!HAS_GUC(dev_priv))
+ return -ENODEV;
ret = intel_guc_init(guc);
if (ret)
- goto err_out;
+ return ret;
if (USES_GUC_SUBMISSION(dev_priv)) {
/*
@@ -241,10 +235,44 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
* if we are planning to enable submission later
*/
ret = intel_guc_submission_init(guc);
- if (ret)
- goto err_guc;
+ if (ret) {
+ intel_guc_fini(guc);
+ return ret;
+ }
}
+ return 0;
+}
+
+void intel_uc_fini(struct drm_i915_private *dev_priv)
+{
+ struct intel_guc *guc = &dev_priv->guc;
+
+ if (!USES_GUC(dev_priv))
+ return;
+
+ GEM_BUG_ON(!HAS_GUC(dev_priv));
+
+ if (USES_GUC_SUBMISSION(dev_priv))
+ intel_guc_submission_fini(guc);
+
+ intel_guc_fini(guc);
+}
+
+int intel_uc_init_hw(struct drm_i915_private *dev_priv)
+{
+ struct intel_guc *guc = &dev_priv->guc;
+ struct intel_huc *huc = &dev_priv->huc;
+ int ret, attempts;
+
+ if (!USES_GUC(dev_priv))
+ return 0;
+
+ GEM_BUG_ON(!HAS_GUC(dev_priv));
+
+ guc_disable_communication(guc);
+ gen9_reset_guc_interrupts(dev_priv);
+
/* init WOPCM */
I915_WRITE(GUC_WOPCM_SIZE, intel_guc_wopcm_size(dev_priv));
I915_WRITE(DMA_GUC_WOPCM_OFFSET,
@@ -264,12 +292,12 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
*/
ret = __intel_uc_reset_hw(dev_priv);
if (ret)
- goto err_submission;
+ goto err_out;
if (USES_HUC(dev_priv)) {
ret = intel_huc_init_hw(huc);
if (ret)
- goto err_submission;
+ goto err_out;
}
intel_guc_init_params(guc);
@@ -322,11 +350,6 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
guc_disable_communication(guc);
err_log_capture:
guc_capture_load_err_log(guc);
-err_submission:
- if (USES_GUC_SUBMISSION(dev_priv))
- intel_guc_submission_fini(guc);
-err_guc:
- intel_guc_fini(guc);
err_out:
/*
* Note that there is no fallback as either user explicitly asked for
@@ -348,15 +371,13 @@ void intel_uc_fini_hw(struct drm_i915_private *dev_priv)
if (!USES_GUC(dev_priv))
return;
+ GEM_BUG_ON(!HAS_GUC(dev_priv));
+
if (USES_GUC_SUBMISSION(dev_priv))
intel_guc_submission_disable(guc);
guc_disable_communication(guc);
- if (USES_GUC_SUBMISSION(dev_priv)) {
+ if (USES_GUC_SUBMISSION(dev_priv))
gen9_disable_guc_interrupts(dev_priv);
- intel_guc_submission_fini(guc);
- }
-
- intel_guc_fini(guc);
}
diff --git a/drivers/gpu/drm/i915/intel_uc.h b/drivers/gpu/drm/i915/intel_uc.h
index 53edfeaf56b0..8a7249722ef1 100644
--- a/drivers/gpu/drm/i915/intel_uc.h
+++ b/drivers/gpu/drm/i915/intel_uc.h
@@ -37,6 +37,8 @@ int intel_uc_init_wq(struct drm_i915_private *dev_priv);
void intel_uc_fini_wq(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);
+int intel_uc_init(struct drm_i915_private *dev_priv);
+void intel_uc_fini(struct drm_i915_private *dev_priv);
static inline bool intel_uc_is_using_guc(void)
{
--
2.14.3
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