[PATCH 09/13] drm/i915/guc: Fix GuC interaction in reset/suspend scenarios
Sagar Arun Kamble
sagar.a.kamble at intel.com
Mon Sep 18 09:09:18 UTC 2017
Pass intel_guc to intel_guc_suspend/resume instead of drm_i915_private.
guc_ggtt_invalidate/guc_interrupts should be disabled towards
end of reset/suspend post GuC suspension as these are setup back again
during recovery/resume.
Prepared helpers intel_guc_pause and intel_guc_unpause that will do
teardown/bringup of this setup along with suspension/resumption of GuC if
loaded. These helpers can then be used along the system or runtime
suspend/resume paths as applicable. Currently post system resume, since
GuC is loaded completely system_resume function for GuC is doing
nothing. We rely on the setup happening in intel_uc_init_hw path.
During runtime_suspend we will call intel_guc_pause helper.
Another helper added is intel_guc_reset_prepare, this will make sure that
disabling of ggtt_invalidate and GuC interrupts happens prior to reset and
updates the firmware load status to PENDING.
v2: Updated commit message. Added note about skipped call to
intel_guc_system_resume. guc_enable/disable_communication was moved to
earlier patch so corresponding rebase. (Michal Wajdeczko)
v3: Introduction of intel_uc_runtime/system_suspend/resume. Updated
changes for enable/disable_communication.
v4: Squashed change to update parameters of intel_guc_suspend/resume from
earlier patch.
v5: Rebase as intel_guc.h is removed. Updated intel_uc_runtime_resume and
intel_uc_system_resume as guc_enable_communication should happen prior to
resuming the uc. Thanks to trybot for catching this. (Sagar)
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 | 15 +++-
drivers/gpu/drm/i915/i915_gem.c | 4 +-
drivers/gpu/drm/i915/i915_guc_submission.c | 52 ------------
drivers/gpu/drm/i915/intel_guc.c | 129 +++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_uc.c | 53 ++++++++++++
drivers/gpu/drm/i915/intel_uc.h | 12 ++-
6 files changed, 206 insertions(+), 59 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 5c111ea..f41f0e0 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1684,6 +1684,11 @@ static int i915_drm_resume(struct drm_device *dev)
drm_mode_config_reset(dev);
+ /*
+ * NB: Full gem reinitialization is being done during i915_drm_resume,
+ * hence intel_guc_system_resume will be of no use. If full
+ * reinitialization is avoided, need to call intel_guc_system_resume.
+ */
mutex_lock(&dev->struct_mutex);
if (i915_gem_init_hw(dev_priv)) {
DRM_ERROR("failed to re-initialize GPU, declaring wedged!\n");
@@ -1691,8 +1696,6 @@ static int i915_drm_resume(struct drm_device *dev)
}
mutex_unlock(&dev->struct_mutex);
- intel_guc_resume(dev_priv);
-
intel_modeset_init_hw(dev);
spin_lock_irq(&dev_priv->irq_lock);
@@ -2493,7 +2496,7 @@ static int intel_runtime_suspend(struct device *kdev)
*/
i915_gem_runtime_suspend(dev_priv);
- intel_guc_suspend(dev_priv);
+ intel_uc_runtime_suspend(dev_priv);
intel_runtime_pm_disable_interrupts(dev_priv);
@@ -2578,7 +2581,11 @@ static int intel_runtime_resume(struct device *kdev)
if (intel_uncore_unclaimed_mmio(dev_priv))
DRM_DEBUG_DRIVER("Unclaimed access during suspend, bios?\n");
- intel_guc_resume(dev_priv);
+ ret = intel_uc_runtime_resume(dev_priv);
+ if (ret) {
+ DRM_ERROR("uc runtime resume failed (%d)\n", ret);
+ return ret;
+ }
if (IS_GEN9_LP(dev_priv)) {
bxt_disable_dc9(dev_priv);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 3250dfa..ae97a6f 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2847,6 +2847,8 @@ int i915_gem_reset_prepare(struct drm_i915_private *dev_priv)
i915_gem_revoke_fences(dev_priv);
+ intel_uc_reset_prepare(dev_priv);
+
return err;
}
@@ -4575,7 +4577,7 @@ int i915_gem_suspend(struct drm_i915_private *dev_priv)
i915_gem_contexts_lost(dev_priv);
mutex_unlock(&dev->struct_mutex);
- intel_guc_suspend(dev_priv);
+ intel_uc_system_suspend(dev_priv);
cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work);
cancel_delayed_work_sync(&dev_priv->gt.retire_work);
diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 3f9d227..f527963 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -1205,55 +1205,3 @@ void i915_guc_submission_disable(struct drm_i915_private *dev_priv)
guc_client_free(guc->execbuf_client);
guc->execbuf_client = NULL;
}
-
-/**
- * intel_guc_suspend() - notify GuC entering suspend state
- * @dev_priv: i915 device private
- */
-int intel_guc_suspend(struct drm_i915_private *dev_priv)
-{
- struct intel_guc *guc = &dev_priv->guc;
- struct i915_gem_context *ctx;
- u32 data[3];
-
- if (guc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS)
- return 0;
-
- gen9_disable_guc_interrupts(dev_priv);
-
- ctx = dev_priv->kernel_context;
-
- data[0] = INTEL_GUC_ACTION_ENTER_S_STATE;
- /* any value greater than GUC_POWER_D0 */
- data[1] = GUC_POWER_D1;
- /* first page is shared data with GuC */
- data[2] = guc_ggtt_offset(ctx->engine[RCS].state) + LRC_GUCSHR_PN * PAGE_SIZE;
-
- return intel_guc_send(guc, data, ARRAY_SIZE(data));
-}
-
-/**
- * intel_guc_resume() - notify GuC resuming from suspend state
- * @dev_priv: i915 device private
- */
-int intel_guc_resume(struct drm_i915_private *dev_priv)
-{
- struct intel_guc *guc = &dev_priv->guc;
- struct i915_gem_context *ctx;
- u32 data[3];
-
- if (guc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS)
- return 0;
-
- if (i915.guc_log_level >= 0)
- gen9_enable_guc_interrupts(dev_priv);
-
- ctx = dev_priv->kernel_context;
-
- data[0] = INTEL_GUC_ACTION_EXIT_S_STATE;
- data[1] = GUC_POWER_D0;
- /* first page is shared data with GuC */
- data[2] = guc_ggtt_offset(ctx->engine[RCS].state) + LRC_GUCSHR_PN * PAGE_SIZE;
-
- return intel_guc_send(guc, data, ARRAY_SIZE(data));
-}
diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
index d8b3559..792a302 100644
--- a/drivers/gpu/drm/i915/intel_guc.c
+++ b/drivers/gpu/drm/i915/intel_guc.c
@@ -144,3 +144,132 @@ int intel_guc_sample_forcewake(struct intel_guc *guc)
return intel_guc_send(guc, action, ARRAY_SIZE(action));
}
+
+/**
+ * intel_guc_suspend() - notify GuC entering suspend state
+ */
+static int intel_guc_suspend(struct intel_guc *guc)
+{
+ struct drm_i915_private *dev_priv = guc_to_i915(guc);
+ struct i915_gem_context *ctx;
+ u32 data[3];
+
+ if (guc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS)
+ return 0;
+
+ ctx = dev_priv->kernel_context;
+
+ data[0] = INTEL_GUC_ACTION_ENTER_S_STATE;
+ /* any value greater than GUC_POWER_D0 */
+ data[1] = GUC_POWER_D1;
+ /* first page is shared data with GuC */
+ data[2] = guc_ggtt_offset(ctx->engine[RCS].state);
+
+ return intel_guc_send(guc, data, ARRAY_SIZE(data));
+}
+
+/**
+ * intel_guc_resume() - notify GuC resuming from suspend state
+ */
+static int intel_guc_resume(struct intel_guc *guc)
+{
+ struct drm_i915_private *dev_priv = guc_to_i915(guc);
+ struct i915_gem_context *ctx;
+ u32 data[3];
+
+ if (guc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS)
+ return 0;
+
+ ctx = dev_priv->kernel_context;
+
+ data[0] = INTEL_GUC_ACTION_EXIT_S_STATE;
+ data[1] = GUC_POWER_D0;
+ /* first page is shared data with GuC */
+ data[2] = guc_ggtt_offset(ctx->engine[RCS].state);
+
+ return intel_guc_send(guc, data, ARRAY_SIZE(data));
+}
+
+static void intel_guc_sanitize(struct intel_guc *guc)
+{
+ struct drm_i915_private *dev_priv = guc_to_i915(guc);
+
+ i915_ggtt_disable_guc(dev_priv);
+ gen9_disable_guc_interrupts(dev_priv);
+}
+
+void intel_guc_reset_prepare(struct intel_guc *guc)
+{
+ if (!i915.enable_guc_loading)
+ return;
+
+ intel_guc_sanitize(guc);
+ guc->fw.load_status = INTEL_UC_FIRMWARE_PENDING;
+}
+
+static int intel_guc_pause(struct intel_guc *guc)
+{
+ int ret = 0;
+
+ ret = intel_guc_suspend(guc);
+ intel_guc_sanitize(guc);
+
+ return ret;
+}
+
+static int intel_guc_unpause(struct intel_guc *guc)
+{
+ struct drm_i915_private *dev_priv = guc_to_i915(guc);
+ int ret = 0;
+
+ if (i915.guc_log_level >= 0)
+ gen9_enable_guc_interrupts(dev_priv);
+ i915_ggtt_enable_guc(dev_priv);
+ ret = intel_guc_resume(guc);
+
+ return ret;
+}
+
+int intel_guc_runtime_suspend(struct intel_guc *guc)
+{
+ if (!i915.enable_guc_loading)
+ return 0;
+
+ return intel_guc_pause(guc);
+}
+
+int intel_guc_runtime_resume(struct intel_guc *guc)
+{
+ if (!i915.enable_guc_loading)
+ return 0;
+
+ return intel_guc_unpause(guc);
+}
+
+int intel_guc_system_suspend(struct intel_guc *guc)
+{
+ int ret = 0;
+
+ if (!i915.enable_guc_loading)
+ return ret;
+
+ ret = intel_guc_pause(guc);
+ guc->fw.load_status = INTEL_UC_FIRMWARE_PENDING;
+
+ return ret;
+}
+
+int intel_guc_system_resume(struct intel_guc *guc)
+{
+ int ret = 0;
+
+ if (!i915.enable_guc_loading)
+ return ret;
+
+ /*
+ * Placeholder for GuC resume from system suspend/freeze states.
+ * Currently full reinitialization of GEM and GuC happens along
+ * these paths, Hence this function is doing nothing.
+ */
+ return ret;
+}
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index f7c5112..aa1310b 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -419,3 +419,56 @@ void intel_uc_fini_hw(struct drm_i915_private *dev_priv)
i915_ggtt_disable_guc(dev_priv);
}
+
+void intel_uc_reset_prepare(struct drm_i915_private *dev_priv)
+{
+ intel_guc_reset_prepare(&dev_priv->guc);
+ guc_disable_communication(&dev_priv->guc);
+}
+
+void intel_uc_runtime_suspend(struct drm_i915_private *dev_priv)
+{
+ intel_guc_runtime_suspend(&dev_priv->guc);
+ guc_disable_communication(&dev_priv->guc);
+}
+
+int intel_uc_runtime_resume(struct drm_i915_private *dev_priv)
+{
+ int ret;
+
+ ret = guc_enable_communication(&dev_priv->guc);
+ if (ret) {
+ DRM_ERROR("GuC communication enable failed\n");
+ return ret;
+ }
+ ret = intel_guc_runtime_resume(&dev_priv->guc);
+ if (ret) {
+ DRM_ERROR("GuC resume failed\n");
+ return ret;
+ }
+ return 0;
+}
+
+void intel_uc_system_suspend(struct drm_i915_private *dev_priv)
+{
+ intel_guc_system_suspend(&dev_priv->guc);
+ guc_disable_communication(&dev_priv->guc);
+}
+
+int intel_uc_system_resume(struct drm_i915_private *dev_priv)
+{
+ int ret;
+
+ ret = guc_enable_communication(&dev_priv->guc);
+ if (ret) {
+ DRM_ERROR("GuC communication enable failed\n");
+ return ret;
+ }
+ ret = intel_guc_system_resume(&dev_priv->guc);
+ if (ret) {
+ DRM_ERROR("GuC resume failed\n");
+ return ret;
+ }
+ return 0;
+
+}
diff --git a/drivers/gpu/drm/i915/intel_uc.h b/drivers/gpu/drm/i915/intel_uc.h
index fea206b..5077619 100644
--- a/drivers/gpu/drm/i915/intel_uc.h
+++ b/drivers/gpu/drm/i915/intel_uc.h
@@ -208,6 +208,11 @@ struct intel_huc {
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_reset_prepare(struct drm_i915_private *dev_priv);
+void intel_uc_runtime_suspend(struct drm_i915_private *dev_priv);
+int intel_uc_runtime_resume(struct drm_i915_private *dev_priv);
+void intel_uc_system_suspend(struct drm_i915_private *dev_priv);
+int intel_uc_system_resume(struct drm_i915_private *dev_priv);
static inline int intel_guc_send(struct intel_guc *guc, const u32 *action, u32 len)
{
@@ -225,12 +230,15 @@ static inline void intel_guc_notify(struct intel_guc *guc)
void intel_guc_init_send_regs(struct intel_guc *guc);
int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len);
int intel_guc_sample_forcewake(struct intel_guc *guc);
+void intel_guc_reset_prepare(struct intel_guc *guc);
+int intel_guc_runtime_suspend(struct intel_guc *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);
/* intel_guc_loader.c */
int intel_guc_select_fw(struct intel_guc *guc);
int intel_guc_init_hw(struct intel_guc *guc);
-int intel_guc_suspend(struct drm_i915_private *dev_priv);
-int intel_guc_resume(struct drm_i915_private *dev_priv);
u32 intel_guc_wopcm_size(struct drm_i915_private *dev_priv);
/* i915_guc_submission.c */
--
1.9.1
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