[PATCH v5 08/27] drm/i915/slpc: Use intel_slpc_* functions if supported
Sagar Arun Kamble
sagar.a.kamble at intel.com
Sun Jul 3 10:14:26 UTC 2016
From: Tom O'Rourke <Tom.O'Rourke at intel.com>
On platforms with SLPC support: call intel_slpc_*()
functions from corresponding intel_*_gt_powersave()
functions; and do not use rps functions.
v2: return void instead of ignored error code (Paulo)
enable/disable RC6 in SLPC flows (Sagar)
replace HAS_SLPC() use with intel_slpc_enabled()
or intel_slpc_active() (Paulo)
v3: Fix for renaming gen9_disable_rps to gen9_disable_rc6 in
"drm/i915/bxt: Explicitly clear the Turbo control register"
v5: Defer RC6 and SLPC enabling to intel_gen6_powersave_work. (Sagar)
Performance drop with SLPC was happening as ring frequency table
was not programmed when SLPC was enabled. This patch programs ring
frequency table with SLPC. Initial reset of SLPC is based on kernel
parameter as planning to add slpc state in intel_slpc_active. Cleanup
is also based on kernel parameter as SLPC gets disabled in
disable/suspend.(Sagar)
Signed-off-by: Tom O'Rourke <Tom.O'Rourke at intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
---
drivers/gpu/drm/i915/Makefile | 5 +--
drivers/gpu/drm/i915/intel_drv.h | 4 +++
drivers/gpu/drm/i915/intel_guc.h | 1 +
drivers/gpu/drm/i915/intel_pm.c | 76 +++++++++++++++++++++++++--------------
drivers/gpu/drm/i915/intel_slpc.c | 56 +++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_slpc.h | 35 ++++++++++++++++++
6 files changed, 148 insertions(+), 29 deletions(-)
create mode 100644 drivers/gpu/drm/i915/intel_slpc.c
create mode 100644 drivers/gpu/drm/i915/intel_slpc.h
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 618293c..5f966f0 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -45,8 +45,9 @@ i915-y += i915_cmd_parser.o \
intel_uncore.o
# general-purpose microcontroller (GuC) support
-i915-y += intel_guc_loader.o \
- i915_guc_submission.o
+i915-y += i915_guc_submission.o \
+ intel_guc_loader.o \
+ intel_slpc.o
# autogenerated null render state
i915-y += intel_renderstate_gen6.o \
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 98a5be4..e862ec0 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1673,6 +1673,10 @@ void chv_phy_powergate_lanes(struct intel_encoder *encoder,
bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
enum dpio_channel ch, bool override);
+static inline int intel_slpc_active(struct drm_i915_private *dev_priv)
+{
+ return 0;
+}
/* intel_pm.c */
void intel_init_clock_gating(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h
index f6a7cc1..6a43916 100644
--- a/drivers/gpu/drm/i915/intel_guc.h
+++ b/drivers/gpu/drm/i915/intel_guc.h
@@ -27,6 +27,7 @@
#include "intel_guc_fwif.h"
#include "i915_guc_reg.h"
#include "intel_ringbuffer.h"
+#include "intel_slpc.h"
struct drm_i915_gem_request;
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 75f53f3..c4185f3 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6572,7 +6572,9 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv)
intel_runtime_pm_get(dev_priv);
}
- if (IS_CHERRYVIEW(dev_priv))
+ if (intel_slpc_enabled())
+ intel_slpc_init(dev_priv);
+ else if (IS_CHERRYVIEW(dev_priv))
cherryview_init_gt_powersave(dev_priv);
else if (IS_VALLEYVIEW(dev_priv))
valleyview_init_gt_powersave(dev_priv);
@@ -6580,7 +6582,9 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv)
void intel_cleanup_gt_powersave(struct drm_i915_private *dev_priv)
{
- if (IS_CHERRYVIEW(dev_priv))
+ if (intel_slpc_enabled())
+ intel_slpc_cleanup(dev_priv);
+ else if (IS_CHERRYVIEW(dev_priv))
return;
else if (IS_VALLEYVIEW(dev_priv))
valleyview_cleanup_gt_powersave(dev_priv);
@@ -6609,15 +6613,22 @@ void intel_suspend_gt_powersave(struct drm_i915_private *dev_priv)
if (INTEL_GEN(dev_priv) < 6)
return;
- gen6_suspend_rps(dev_priv);
+ if (intel_slpc_active(dev_priv)) {
+ intel_slpc_suspend(dev_priv);
+ } else {
+ gen6_suspend_rps(dev_priv);
- /* Force GPU to min freq during suspend */
- gen6_rps_idle(dev_priv);
+ /* Force GPU to min freq during suspend */
+ gen6_rps_idle(dev_priv);
+ }
}
void intel_disable_gt_powersave(struct drm_i915_private *dev_priv)
{
- if (IS_IRONLAKE_M(dev_priv)) {
+ if (intel_slpc_active(dev_priv)) {
+ intel_slpc_disable(dev_priv);
+ gen9_disable_rc6(dev_priv);
+ } else if (IS_IRONLAKE_M(dev_priv)) {
ironlake_disable_drps(dev_priv);
} else if (INTEL_INFO(dev_priv)->gen >= 6) {
intel_suspend_gt_powersave(dev_priv);
@@ -6645,32 +6656,39 @@ static void intel_gen6_powersave_work(struct work_struct *work)
mutex_lock(&dev_priv->rps.hw_lock);
- gen6_reset_rps_interrupts(dev_priv);
-
- if (IS_CHERRYVIEW(dev_priv)) {
- cherryview_enable_rps(dev_priv);
- } else if (IS_VALLEYVIEW(dev_priv)) {
- valleyview_enable_rps(dev_priv);
- } else if (INTEL_INFO(dev_priv)->gen >= 9) {
+ if (intel_slpc_enabled()) {
gen9_enable_rc6(dev_priv);
- gen9_enable_rps(dev_priv);
+ intel_slpc_enable(dev_priv);
if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))
__gen6_update_ring_freq(dev_priv);
- } else if (IS_BROADWELL(dev_priv)) {
- gen8_enable_rps(dev_priv);
- __gen6_update_ring_freq(dev_priv);
} else {
- gen6_enable_rps(dev_priv);
- __gen6_update_ring_freq(dev_priv);
- }
+ gen6_reset_rps_interrupts(dev_priv);
+
+ if (IS_CHERRYVIEW(dev_priv)) {
+ cherryview_enable_rps(dev_priv);
+ } else if (IS_VALLEYVIEW(dev_priv)) {
+ valleyview_enable_rps(dev_priv);
+ } else if (INTEL_INFO(dev_priv)->gen >= 9) {
+ gen9_enable_rc6(dev_priv);
+ gen9_enable_rps(dev_priv);
+ if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))
+ __gen6_update_ring_freq(dev_priv);
+ } else if (IS_BROADWELL(dev_priv)) {
+ gen8_enable_rps(dev_priv);
+ __gen6_update_ring_freq(dev_priv);
+ } else {
+ gen6_enable_rps(dev_priv);
+ __gen6_update_ring_freq(dev_priv);
+ }
- WARN_ON(dev_priv->rps.max_freq < dev_priv->rps.min_freq);
- WARN_ON(dev_priv->rps.idle_freq > dev_priv->rps.max_freq);
+ WARN_ON(dev_priv->rps.max_freq < dev_priv->rps.min_freq);
+ WARN_ON(dev_priv->rps.idle_freq > dev_priv->rps.max_freq);
- WARN_ON(dev_priv->rps.efficient_freq < dev_priv->rps.min_freq);
- WARN_ON(dev_priv->rps.efficient_freq > dev_priv->rps.max_freq);
+ WARN_ON(dev_priv->rps.efficient_freq < dev_priv->rps.min_freq);
+ WARN_ON(dev_priv->rps.efficient_freq > dev_priv->rps.max_freq);
- gen6_enable_rps_interrupts(dev_priv);
+ gen6_enable_rps_interrupts(dev_priv);
+ }
mutex_unlock(&dev_priv->rps.hw_lock);
@@ -6712,8 +6730,12 @@ void intel_reset_gt_powersave(struct drm_i915_private *dev_priv)
if (INTEL_INFO(dev_priv)->gen < 6)
return;
- gen6_suspend_rps(dev_priv);
- dev_priv->rps.enabled = false;
+ if (intel_slpc_active(dev_priv)) {
+ intel_slpc_reset(dev_priv);
+ } else {
+ gen6_suspend_rps(dev_priv);
+ dev_priv->rps.enabled = false;
+ }
}
static void ibx_init_clock_gating(struct drm_device *dev)
diff --git a/drivers/gpu/drm/i915/intel_slpc.c b/drivers/gpu/drm/i915/intel_slpc.c
new file mode 100644
index 0000000..b2e8d91
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_slpc.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+#include <linux/firmware.h>
+#include "i915_drv.h"
+#include "intel_guc.h"
+
+void intel_slpc_init(struct drm_i915_private *dev_priv)
+{
+ return;
+}
+
+void intel_slpc_cleanup(struct drm_i915_private *dev_priv)
+{
+ return;
+}
+
+void intel_slpc_suspend(struct drm_i915_private *dev_priv)
+{
+ return;
+}
+
+void intel_slpc_disable(struct drm_i915_private *dev_priv)
+{
+ return;
+}
+
+void intel_slpc_enable(struct drm_i915_private *dev_priv)
+{
+ return;
+}
+
+void intel_slpc_reset(struct drm_i915_private *dev_priv)
+{
+ return;
+}
diff --git a/drivers/gpu/drm/i915/intel_slpc.h b/drivers/gpu/drm/i915/intel_slpc.h
new file mode 100644
index 0000000..ae52146
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_slpc.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+#ifndef _INTEL_SLPC_H_
+#define _INTEL_SLPC_H_
+
+/* intel_slpc.c */
+void intel_slpc_init(struct drm_i915_private *dev_priv);
+void intel_slpc_cleanup(struct drm_i915_private *dev_priv);
+void intel_slpc_suspend(struct drm_i915_private *dev_priv);
+void intel_slpc_disable(struct drm_i915_private *dev_priv);
+void intel_slpc_enable(struct drm_i915_private *dev_priv);
+void intel_slpc_reset(struct drm_i915_private *dev_priv);
+
+#endif
--
1.9.1
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