[PATCH v6 18/23] drm/i915/slpc: Set default values for tasks and min frequency parameters

[Sagar Arun Kamble]

From: "sagar.a.kamble at intel.com" <sagar.a.kamble at intel.com>

v1: Updated tasks and frequency post reset.
    Added DFPS param update for MAX_FPS and FPS Stall.

v2-v3: Rebase.

v4: Updated with GuC firmware v9.

v5: Rebase. Replaced H2G interrupts for parameter override with memory
    setup with required parameters.

v6: Moved task override to intel_slpc_init. Added override of min frequency
    to Rpe. Commit subject update.

Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
---
 drivers/gpu/drm/i915/intel_drv.h  |  1 +
 drivers/gpu/drm/i915/intel_pm.c   |  2 +-
 drivers/gpu/drm/i915/intel_slpc.c | 46 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 48 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 6b02dac..e5dd766 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1763,6 +1763,7 @@ bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
 void gen6_rps_boost(struct drm_i915_private *dev_priv,
 		    struct intel_rps_client *rps,
 		    unsigned long submitted);
+void gen6_init_rps_frequencies(struct drm_i915_private *dev_priv);
 void intel_queue_rps_boost_for_request(struct drm_i915_gem_request *req);
 void vlv_wm_get_hw_state(struct drm_device *dev);
 void ilk_wm_get_hw_state(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index e35c564..31e5076 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5295,7 +5295,7 @@ int sanitize_rc6_option(struct drm_i915_private *dev_priv, int enable_rc6)
 	return INTEL_RC6_ENABLE;
 }
 
-static void gen6_init_rps_frequencies(struct drm_i915_private *dev_priv)
+void gen6_init_rps_frequencies(struct drm_i915_private *dev_priv)
 {
 	/* All of these values are in units of 50MHz */
 
diff --git a/drivers/gpu/drm/i915/intel_slpc.c b/drivers/gpu/drm/i915/intel_slpc.c
index c9ecf67..84470ce 100644
--- a/drivers/gpu/drm/i915/intel_slpc.c
+++ b/drivers/gpu/drm/i915/intel_slpc.c
@@ -120,6 +120,48 @@ static void slpc_shared_data_init(struct drm_i915_private *dev_priv)
 	data->platform_info.Pe_freq = val >> 40;
 	data->platform_info.Pn_freq = val >> 48;
 
+	/* Enable only GTPERF task, Disable others */
+	val = SLPC_PARAM_TASK_ENABLED;
+	slpc_mem_task_control(data, val,
+			      SLPC_PARAM_TASK_ENABLE_GTPERF,
+			      SLPC_PARAM_TASK_DISABLE_GTPERF);
+
+	val = SLPC_PARAM_TASK_DISABLED;
+	slpc_mem_task_control(data, val,
+			      SLPC_PARAM_TASK_ENABLE_BALANCER,
+			      SLPC_PARAM_TASK_DISABLE_BALANCER);
+
+	slpc_mem_task_control(data, val,
+			      SLPC_PARAM_TASK_ENABLE_DCC,
+			      SLPC_PARAM_TASK_DISABLE_DCC);
+
+	slpc_mem_set_param(data, SLPC_PARAM_GTPERF_THRESHOLD_MAX_FPS, 0);
+
+	slpc_mem_set_param(data, SLPC_PARAM_GTPERF_ENABLE_FRAMERATE_STALLING,
+			   0);
+
+	slpc_mem_set_param(data, SLPC_PARAM_GLOBAL_ENABLE_IA_GT_BALANCING,
+			   0);
+
+	slpc_mem_set_param(data,
+			   SLPC_PARAM_GLOBAL_ENABLE_ADAPTIVE_BURST_TURBO,
+			   0);
+
+	slpc_mem_set_param(data, SLPC_PARAM_GLOBAL_ENABLE_EVAL_MODE, 0);
+
+	slpc_mem_set_param(data,
+			   SLPC_PARAM_GLOBAL_ENABLE_BALANCER_IN_NON_GAMING_MODE,
+			   0);
+
+	slpc_mem_set_param(data,
+			   SLPC_PARAM_GLOBAL_MIN_GT_UNSLICE_FREQ_MHZ,
+			   intel_gpu_freq(dev_priv,
+				dev_priv->rps.efficient_freq));
+	slpc_mem_set_param(data,
+			   SLPC_PARAM_GLOBAL_MIN_GT_SLICE_FREQ_MHZ,
+			   intel_gpu_freq(dev_priv,
+				dev_priv->rps.efficient_freq));
+
 	kunmap_atomic(data);
 }
 
@@ -469,6 +511,10 @@ void intel_slpc_init(struct drm_i915_private *dev_priv)
 
 	dev_priv->guc.slpc.active = false;
 
+	mutex_lock(&dev_priv->rps.hw_lock);
+	gen6_init_rps_frequencies(dev_priv);
+	mutex_unlock(&dev_priv->rps.hw_lock);
+
 	/* Allocate shared data structure */
 	vma = dev_priv->guc.slpc.vma;
 	if (!vma) {
-- 
1.9.1