Nouveau - Jan 2018 - [RFC 0/4] Implement full clockgating for Kepler1 and 2

It's here! After a lot of investigation, rewrites, and traces, I present
the patch series to implement all known levels of clockgating for
Kepler1 and Kepler2 GPUs.

Starting with Fermi GPUs (this is probably present on earlier GPUs as
well, but with a far less easy to manage interface), nvidia added two
clockgating levels that are handled mostly in firmware (with the
exception of course, of the driver initially programming all of the
register values containing engine delays and that stuff):
  - CG_CTRL - Main register for enabling/disabling clockgating for
    engines and hw blocks
  - BLCG - "Block-level clockgating", a deeper level of clockgating
Starting with kepler2 as well, nvidia also introduced:
  - SLCG - "??? clockgating" even deeper level of clockgating

Originally this patchset was going to include work for making this work
on Fermi, however on closer investigation it seems that Fermi has one
pretty big difference in it's requirements that we don't entirely
understand yet. On Fermi the CG_CTRL register for the gr needs to be
adjusted during reclocking, while kepler and later generations need no
such adjustments. Since this requires more research; the current plan is
to leave fermi out of this patchset, and then just rework the code at a
later point in time to support Fermi once we understand more.

For the time being however, we put as much code we're sure Fermi will be
sharing into gf100 files for the future.

For the time being; this patchset supports every GPU in the kepler1 and
kepler2 family. The main kernel config option to enable this is
	config=NvPmEnableGating=<level>
Where <level> is the deepest level of powersaving to enable. The levels
being:
	0. NOCG
	1. CG (just CG_CTRL)
	2. BLCG
	3. SLCG

Additionally, we leave a couple of small TODO comments to mark spots
we'll eventually need to add code for the final level of power saving we
have yet to implement or understand: ELPG (engine-level powergating).

Here's some very lazily done benchmarks on how much power this saves as
well. It should be noted that chances are, these patches save a lot more
power then you see here since clockgating works best when the GPU is
under load. I have a feeling this will be especially true with SLCG.

GK104 stats:
  Idle (1 4k display @ fbcon):
    NOCG:
      07: 20.53W
      0a: 44.12W
      0e: 61.23W
      0f: 62.23W
    CG:
      07: 18.95W-19.02W
      0a: 34.95W-37.48W
      0e: 52.70W-54.32W
      0f: 53.53W-55.68W
    BLCG:
      07: 18.64W-19.02W
      0a: 32.68W-34.78W
      0e: 49.14W-50.51W
      0f: 49.75W-51.73W
GK110 stats:
  Idle (1 4k display @ fbcon):
    NOCG:
      07: 25.68W
      0a: 36.16W
      0d: 64.71W
      0f: 64.99W
    CG:
      07: 25.68W
      0a: 35.58W
      0d: 61.54W-61.74W
      0f: 61.93W-62.12W
    BLCG:
      07: 25W-25.2W
      0a: 33.85W-34.04W
      0d: 59.25W-59.44W
      0f: 59.35W-59.54W
    SLCG:
      07: 25W-25.2W
      0a: 33.85W-33.95W (spikes to 34.04W briefly every now and then)
      0d: 59.15W-59.35W
      0f: 59.35W-59.54W

For the time being, this will be disabled by default in the kernel as we
wait to get more widespread testing with this patchset. If you're
willing to put up with the potential of instability, please feel free to
try this patchset and let us know how well it works for you!

Lyude Paul (4):
  drm/nouveau: Add support for basic clockgating on Kepler1
  drm/nouveau: Add support for BLCG clockgating for Kepler1
  drm/nouveau: Add BLCG clockgating for Kepler2
  drm/nouveau: Add SLCG clockgating for Kepler2

 drivers/gpu/drm/nouveau/include/nvkm/subdev/fb.h   |   1 +
 .../gpu/drm/nouveau/include/nvkm/subdev/therm.h    |  25 +++
 drivers/gpu/drm/nouveau/nvkm/engine/device/base.c  |  25 +--
 drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.h     |   1 +
 drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.c     | 215 ++++++++++++++++++++-
 drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.h     |  55 ++++++
 drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110.c     | 176 +++++++++++++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/fb/Kbuild      |   1 +
 drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.c     |   6 +
 drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.c     |  53 +++++
 drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.h     |  35 ++++
 drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk110.c     |  77 ++++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/fb/priv.h      |   3 +
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild   |   2 +
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c   |  84 +++++++-
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.c  |  77 ++++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.h  |  35 ++++
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf119.c  |   8 +-
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c  | 136 +++++++++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.h  |  56 ++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gt215.c  |   2 +-
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h   |  23 ++-
 22 files changed, 1069 insertions(+), 27 deletions(-)
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.h
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.h
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk110.c
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.c
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.h
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.h

-- 
2.14.3

This adds support for enabling automatic clockgating on nvidia GPUs for
Kepler1, referred to as "CG" throughout the driver. This is one of two
powersaving levels that Kepler1 supports.

This introduces two therm helpers for controlling basic clockgating:
	nvkm_therm_clkgate_enable() - enables clockgating through
	CG_CTRL, done after initializing the GPU fully
	nvkm_therm_clkgate_fini() - prepares clockgating for suspend or
	driver unload

As well, we add the nouveau kernel config parameter NvPmEnableGating,
which can be set to the highest level of clockgating (in this case, we
only have CG) the user desires to enable. Since we've only had limited
testing on this thus far, we disable this by default.

A lot of this code was originally going to be based off of fermi;
however it turns out that while Fermi's the first line of GPUs that
introduced this kind of power saving, Fermi requires more fine tuned
control of the CG_CTRL registers from the driver while reclocking that
we don't entirely understand yet.

For the simple parts we will be sharing with Fermi for certain however,
we at least add those into a new subdev/therm/gf100.h header.

Signed-off-by: Lyude Paul <lyude at redhat.com>
---
 .../gpu/drm/nouveau/include/nvkm/subdev/therm.h    |  10 ++
 drivers/gpu/drm/nouveau/nvkm/engine/device/base.c  |  17 +--
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild   |   1 +
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c   |  72 +++++++++--
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.h  |  35 ++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf119.c  |   8 +-
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c  | 135 +++++++++++++++++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.h  |  56 +++++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h   |  15 ++-
 9 files changed, 328 insertions(+), 21 deletions(-)
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.h
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.h

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
b/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
index b1ac47eb786e..a9204c09975b 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
@@ -46,6 +46,11 @@ enum nvkm_therm_attr_type {
 	NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST = 17,
 };
 
+enum nvkm_therm_clkgate_level {
+	NVKM_THERM_CLKGATE_NONE = 0,
+	NVKM_THERM_CLKGATE_CG, /* basic clockgating */
+};
+
 struct nvkm_therm {
 	const struct nvkm_therm_func *func;
 	struct nvkm_subdev subdev;
@@ -85,17 +90,22 @@ struct nvkm_therm {
 
 	int (*attr_get)(struct nvkm_therm *, enum nvkm_therm_attr_type);
 	int (*attr_set)(struct nvkm_therm *, enum nvkm_therm_attr_type, int);
+
+	enum nvkm_therm_clkgate_level clkgate_level;
 };
 
 int nvkm_therm_temp_get(struct nvkm_therm *);
 int nvkm_therm_fan_sense(struct nvkm_therm *);
 int nvkm_therm_cstate(struct nvkm_therm *, int, int);
+void nvkm_therm_clkgate_enable(struct nvkm_therm *);
+void nvkm_therm_clkgate_fini(struct nvkm_therm *, bool);
 
 int nv40_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
 int nv50_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
 int g84_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
 int gt215_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
 int gf119_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
+int gk104_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
 int gm107_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
 int gm200_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
 int gp100_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
index 00eeaaffeae5..6c5f966c66ad 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
@@ -28,6 +28,7 @@
 #include <core/option.h>
 
 #include <subdev/bios.h>
+#include <subdev/therm.h>
 
 static DEFINE_MUTEX(nv_devices_mutex);
 static LIST_HEAD(nv_devices);
@@ -1682,7 +1683,7 @@ nve4_chipset = {
 	.mxm = nv50_mxm_new,
 	.pci = gk104_pci_new,
 	.pmu = gk104_pmu_new,
-	.therm = gf119_therm_new,
+	.therm = gk104_therm_new,
 	.timer = nv41_timer_new,
 	.top = gk104_top_new,
 	.volt = gk104_volt_new,
@@ -1721,7 +1722,7 @@ nve6_chipset = {
 	.mxm = nv50_mxm_new,
 	.pci = gk104_pci_new,
 	.pmu = gk104_pmu_new,
-	.therm = gf119_therm_new,
+	.therm = gk104_therm_new,
 	.timer = nv41_timer_new,
 	.top = gk104_top_new,
 	.volt = gk104_volt_new,
@@ -1760,7 +1761,7 @@ nve7_chipset = {
 	.mxm = nv50_mxm_new,
 	.pci = gk104_pci_new,
 	.pmu = gk104_pmu_new,
-	.therm = gf119_therm_new,
+	.therm = gk104_therm_new,
 	.timer = nv41_timer_new,
 	.top = gk104_top_new,
 	.volt = gk104_volt_new,
@@ -1824,7 +1825,7 @@ nvf0_chipset = {
 	.mxm = nv50_mxm_new,
 	.pci = gk104_pci_new,
 	.pmu = gk110_pmu_new,
-	.therm = gf119_therm_new,
+	.therm = gk104_therm_new,
 	.timer = nv41_timer_new,
 	.top = gk104_top_new,
 	.volt = gk104_volt_new,
@@ -1862,7 +1863,7 @@ nvf1_chipset = {
 	.mxm = nv50_mxm_new,
 	.pci = gk104_pci_new,
 	.pmu = gk110_pmu_new,
-	.therm = gf119_therm_new,
+	.therm = gk104_therm_new,
 	.timer = nv41_timer_new,
 	.top = gk104_top_new,
 	.volt = gk104_volt_new,
@@ -1900,7 +1901,7 @@ nv106_chipset = {
 	.mxm = nv50_mxm_new,
 	.pci = gk104_pci_new,
 	.pmu = gk208_pmu_new,
-	.therm = gf119_therm_new,
+	.therm = gk104_therm_new,
 	.timer = nv41_timer_new,
 	.top = gk104_top_new,
 	.volt = gk104_volt_new,
@@ -1938,7 +1939,7 @@ nv108_chipset = {
 	.mxm = nv50_mxm_new,
 	.pci = gk104_pci_new,
 	.pmu = gk208_pmu_new,
-	.therm = gf119_therm_new,
+	.therm = gk104_therm_new,
 	.timer = nv41_timer_new,
 	.top = gk104_top_new,
 	.volt = gk104_volt_new,
@@ -2508,6 +2509,7 @@ nvkm_device_fini(struct nvkm_device *device, bool suspend)
 		}
 	}
 
+	nvkm_therm_clkgate_fini(device->therm, suspend);
 
 	if (device->func->fini)
 		device->func->fini(device, suspend);
@@ -2597,6 +2599,7 @@ nvkm_device_init(struct nvkm_device *device)
 	}
 
 	nvkm_acpi_init(device);
+	nvkm_therm_clkgate_enable(device->therm);
 
 	time = ktime_to_us(ktime_get()) - time;
 	nvdev_trace(device, "init completed in %lldus\n", time);
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild
index 7ba56b12badd..4bac4772d8ed 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild
@@ -10,6 +10,7 @@ nvkm-y += nvkm/subdev/therm/nv50.o
 nvkm-y += nvkm/subdev/therm/g84.o
 nvkm-y += nvkm/subdev/therm/gt215.o
 nvkm-y += nvkm/subdev/therm/gf119.o
+nvkm-y += nvkm/subdev/therm/gk104.o
 nvkm-y += nvkm/subdev/therm/gm107.o
 nvkm-y += nvkm/subdev/therm/gm200.o
 nvkm-y += nvkm/subdev/therm/gp100.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
index f27fc6d0d4c6..ba1a3aabb559 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
@@ -21,6 +21,7 @@
  *
  * Authors: Martin Peres
  */
+#include <nvkm/core/option.h>
 #include "priv.h"
 
 int
@@ -297,6 +298,47 @@ nvkm_therm_attr_set(struct nvkm_therm *therm,
 	return -EINVAL;
 }
 
+void
+nvkm_therm_clkgate_enable(struct nvkm_therm *therm)
+{
+	if (!therm->func->clkgate_enable || !therm->clkgate_level)
+		return;
+
+	nvkm_debug(&therm->subdev,
+		   "Enabling clock/powergating\n");
+	therm->func->clkgate_enable(therm);
+}
+
+void
+nvkm_therm_clkgate_fini(struct nvkm_therm *therm, bool suspend)
+{
+	if (!therm->func->clkgate_fini || !therm->clkgate_level)
+		return;
+
+	nvkm_debug(&therm->subdev,
+		   "Preparing clock/powergating for %s\n",
+		   suspend ? "suspend" : "fini");
+	therm->func->clkgate_fini(therm, suspend);
+}
+
+static void
+nvkm_therm_clkgate_oneinit(struct nvkm_therm *therm)
+{
+	const char *clkgate_str;
+
+	if (!therm->func->clkgate_enable || !therm->clkgate_level)
+		return;
+
+	switch (therm->clkgate_level) {
+	case NVKM_THERM_CLKGATE_CG: clkgate_str = "CG"; break;
+	default: BUG();
+	}
+
+	nvkm_info(&therm->subdev,
+		  "Clock/powergating enabled up to level %d (%s)\n",
+		  therm->clkgate_level, clkgate_str);
+}
+
 static void
 nvkm_therm_intr(struct nvkm_subdev *subdev)
 {
@@ -333,6 +375,7 @@ nvkm_therm_oneinit(struct nvkm_subdev *subdev)
 	nvkm_therm_fan_ctor(therm);
 	nvkm_therm_fan_mode(therm, NVKM_THERM_CTRL_AUTO);
 	nvkm_therm_sensor_preinit(therm);
+	nvkm_therm_clkgate_oneinit(therm);
 	return 0;
 }
 
@@ -374,15 +417,10 @@ nvkm_therm = {
 	.intr = nvkm_therm_intr,
 };
 
-int
-nvkm_therm_new_(const struct nvkm_therm_func *func, struct nvkm_device *device,
-		int index, struct nvkm_therm **ptherm)
+void
+nvkm_therm_ctor(struct nvkm_therm *therm, struct nvkm_device *device,
+		int index, const struct nvkm_therm_func *func)
 {
-	struct nvkm_therm *therm;
-
-	if (!(therm = *ptherm = kzalloc(sizeof(*therm), GFP_KERNEL)))
-		return -ENOMEM;
-
 	nvkm_subdev_ctor(&nvkm_therm, device, index, &therm->subdev);
 	therm->func = func;
 
@@ -395,5 +433,23 @@ nvkm_therm_new_(const struct nvkm_therm_func *func, struct
nvkm_device *device,
 	therm->attr_get = nvkm_therm_attr_get;
 	therm->attr_set = nvkm_therm_attr_set;
 	therm->mode = therm->suspend = -1; /* undefined */
+
+	therm->clkgate_level +		clamp((int)nvkm_longopt(device->cfgopt,
+					"NvPmEnableGating",
+					NVKM_THERM_CLKGATE_NONE),
+		      NVKM_THERM_CLKGATE_NONE, NVKM_THERM_CLKGATE_CG);
+}
+
+int
+nvkm_therm_new_(const struct nvkm_therm_func *func, struct nvkm_device *device,
+		int index, struct nvkm_therm **ptherm)
+{
+	struct nvkm_therm *therm;
+
+	if (!(therm = *ptherm = kzalloc(sizeof(*therm), GFP_KERNEL)))
+		return -ENOMEM;
+
+	nvkm_therm_ctor(therm, device, index, func);
 	return 0;
 }
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.h
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.h
new file mode 100644
index 000000000000..cfb25af77c60
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2018 Red Hat Inc.
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Lyude Paul
+ */
+
+#ifndef __GF100_THERM_H__
+#define __GF100_THERM_H__
+
+#include <core/device.h>
+
+struct gf100_idle_filter {
+	u32 fecs;
+	u32 hubmmu;
+};
+
+#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf119.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf119.c
index 06dcfd6ee966..0981b02790e2 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf119.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf119.c
@@ -49,7 +49,7 @@ pwm_info(struct nvkm_therm *therm, int line)
 	return -ENODEV;
 }
 
-static int
+int
 gf119_fan_pwm_ctrl(struct nvkm_therm *therm, int line, bool enable)
 {
 	struct nvkm_device *device = therm->subdev.device;
@@ -63,7 +63,7 @@ gf119_fan_pwm_ctrl(struct nvkm_therm *therm, int line, bool
enable)
 	return 0;
 }
 
-static int
+int
 gf119_fan_pwm_get(struct nvkm_therm *therm, int line, u32 *divs, u32 *duty)
 {
 	struct nvkm_device *device = therm->subdev.device;
@@ -85,7 +85,7 @@ gf119_fan_pwm_get(struct nvkm_therm *therm, int line, u32
*divs, u32 *duty)
 	return -EINVAL;
 }
 
-static int
+int
 gf119_fan_pwm_set(struct nvkm_therm *therm, int line, u32 divs, u32 duty)
 {
 	struct nvkm_device *device = therm->subdev.device;
@@ -102,7 +102,7 @@ gf119_fan_pwm_set(struct nvkm_therm *therm, int line, u32
divs, u32 duty)
 	return 0;
 }
 
-static int
+int
 gf119_fan_pwm_clock(struct nvkm_therm *therm, int line)
 {
 	struct nvkm_device *device = therm->subdev.device;
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
new file mode 100644
index 000000000000..81bc73a6d143
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
@@ -0,0 +1,135 @@
+/*
+ * Copyright 2018 Red Hat Inc.
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Lyude Paul
+ */
+#include <core/device.h>
+
+#include "priv.h"
+#include "gk104.h"
+
+void
+gk104_clkgate_enable(struct nvkm_therm *base)
+{
+	struct gk104_therm *therm = gk104_therm(base);
+	struct nvkm_device *dev = therm->base.subdev.device;
+	const struct gk104_clkgate_engine_info *order = therm->clkgate_order;
+	int i;
+
+	/* Program ENG_MANT, ENG_FILTER */
+	for (i = 0; order[i].engine != NVKM_SUBDEV_NR; i++) {
+		if (!nvkm_device_subdev(dev, order[i].engine))
+			continue;
+
+		nvkm_mask(dev, 0x20200 + order[i].offset, 0xff00, 0x4500);
+	}
+
+	/* magic */
+	nvkm_wr32(dev, 0x020288, therm->idle_filter->fecs);
+	nvkm_wr32(dev, 0x02028c, therm->idle_filter->hubmmu);
+
+	/* Enable clockgating (ENG_CLK = RUN->AUTO) */
+	for (i = 0; order[i].engine != NVKM_SUBDEV_NR; i++) {
+		if (!nvkm_device_subdev(dev, order[i].engine))
+			continue;
+
+		nvkm_mask(dev, 0x20200 + order[i].offset, 0x00ff, 0x0045);
+	}
+}
+
+void
+gk104_clkgate_fini(struct nvkm_therm *base, bool suspend)
+{
+	struct gk104_therm *therm = gk104_therm(base);
+	struct nvkm_device *dev = therm->base.subdev.device;
+	const struct gk104_clkgate_engine_info *order = therm->clkgate_order;
+	int i;
+
+	/* ENG_CLK = AUTO->RUN, ENG_PWR = RUN->AUTO */
+	for (i = 0; order[i].engine != NVKM_SUBDEV_NR; i++) {
+		if (!nvkm_device_subdev(dev, order[i].engine))
+			continue;
+
+		nvkm_mask(dev, 0x20200 + order[i].offset, 0xff, 0x54);
+	}
+}
+
+const struct gk104_clkgate_engine_info gk104_clkgate_engine_info[] = {
+	{ NVKM_ENGINE_GR,     0x00 },
+	{ NVKM_ENGINE_MSPDEC, 0x04 },
+	{ NVKM_ENGINE_MSPPP,  0x08 },
+	{ NVKM_ENGINE_MSVLD,  0x0c },
+	{ NVKM_ENGINE_CE0,    0x10 },
+	{ NVKM_ENGINE_CE1,    0x14 },
+	{ NVKM_ENGINE_MSENC,  0x18 },
+	{ NVKM_ENGINE_CE2,    0x1c },
+	{ NVKM_SUBDEV_NR, 0 },
+};
+
+const struct gf100_idle_filter gk104_idle_filter = {
+	.fecs = 0x00001000,
+	.hubmmu = 0x00001000,
+};
+
+static const struct nvkm_therm_func
+gk104_therm_func = {
+	.init = gf119_therm_init,
+	.fini = g84_therm_fini,
+	.pwm_ctrl = gf119_fan_pwm_ctrl,
+	.pwm_get = gf119_fan_pwm_get,
+	.pwm_set = gf119_fan_pwm_set,
+	.pwm_clock = gf119_fan_pwm_clock,
+	.temp_get = g84_temp_get,
+	.fan_sense = gt215_therm_fan_sense,
+	.program_alarms = nvkm_therm_program_alarms_polling,
+	.clkgate_enable = gk104_clkgate_enable,
+	.clkgate_fini = gk104_clkgate_fini,
+};
+
+int
+gk104_therm_new_(const struct nvkm_therm_func *func,
+		 struct nvkm_device *device,
+		 int index,
+		 const struct gk104_clkgate_engine_info *clkgate_order,
+		 const struct gf100_idle_filter *idle_filter,
+		 struct nvkm_therm **ptherm)
+{
+	struct gk104_therm *therm = kzalloc(sizeof(*therm), GFP_KERNEL);
+
+	if (!therm)
+		return -ENOMEM;
+
+	nvkm_therm_ctor(&therm->base, device, index, func);
+	*ptherm = &therm->base;
+	therm->clkgate_order = clkgate_order;
+	therm->idle_filter = idle_filter;
+
+	return 0;
+}
+
+int
+gk104_therm_new(struct nvkm_device *device,
+		int index, struct nvkm_therm **ptherm)
+{
+	return gk104_therm_new_(&gk104_therm_func, device, index,
+				gk104_clkgate_engine_info, &gk104_idle_filter,
+				ptherm);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.h
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.h
new file mode 100644
index 000000000000..a2bb5304469f
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2018 Red Hat Inc.
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Lyude Paul
+ */
+
+#ifndef __GK104_THERM_H__
+#define __GK104_THERM_H__
+#define gk104_therm(p) (container_of((p), struct gk104_therm, base))
+
+#include <subdev/therm.h>
+#include "priv.h"
+#include "gf100.h"
+
+struct gk104_clkgate_engine_info {
+	enum nvkm_devidx engine;
+	u8 offset;
+};
+
+struct gk104_therm {
+	struct nvkm_therm base;
+
+	const struct gk104_clkgate_engine_info *clkgate_order;
+	const struct gf100_idle_filter *idle_filter;
+};
+
+int
+gk104_therm_new_(const struct nvkm_therm_func *func,
+		 struct nvkm_device *device,
+		 int,
+		 const struct gk104_clkgate_engine_info *,
+		 const struct gf100_idle_filter *,
+		 struct nvkm_therm **);
+
+extern const struct gk104_clkgate_engine_info gk104_clkgate_engine_info[];
+extern const struct gf100_idle_filter gk104_idle_filter;
+
+#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h
index 1f46e371d7c4..f30202dd88e7 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h
@@ -32,6 +32,8 @@
 
 int nvkm_therm_new_(const struct nvkm_therm_func *, struct nvkm_device *,
 		    int index, struct nvkm_therm **);
+void nvkm_therm_ctor(struct nvkm_therm *therm, struct nvkm_device *device,
+		     int index, const struct nvkm_therm_func *func);
 
 struct nvkm_fan {
 	struct nvkm_therm *parent;
@@ -66,8 +68,6 @@ int nvkm_therm_fan_set(struct nvkm_therm *, bool now, int
percent);
 int nvkm_therm_fan_user_get(struct nvkm_therm *);
 int nvkm_therm_fan_user_set(struct nvkm_therm *, int percent);
 
-int nvkm_therm_preinit(struct nvkm_therm *);
-
 int  nvkm_therm_sensor_init(struct nvkm_therm *);
 int  nvkm_therm_sensor_fini(struct nvkm_therm *, bool suspend);
 void nvkm_therm_sensor_preinit(struct nvkm_therm *);
@@ -96,6 +96,9 @@ struct nvkm_therm_func {
 	int (*fan_sense)(struct nvkm_therm *);
 
 	void (*program_alarms)(struct nvkm_therm *);
+
+	void (*clkgate_enable)(struct nvkm_therm *);
+	void (*clkgate_fini)(struct nvkm_therm *, bool);
 };
 
 void nv40_therm_intr(struct nvkm_therm *);
@@ -112,8 +115,16 @@ void g84_therm_fini(struct nvkm_therm *);
 int gt215_therm_fan_sense(struct nvkm_therm *);
 
 void g84_therm_init(struct nvkm_therm *);
+
+int gf119_fan_pwm_ctrl(struct nvkm_therm *, int, bool);
+int gf119_fan_pwm_get(struct nvkm_therm *, int, u32 *, u32 *);
+int gf119_fan_pwm_set(struct nvkm_therm *, int, u32, u32);
+int gf119_fan_pwm_clock(struct nvkm_therm *, int);
 void gf119_therm_init(struct nvkm_therm *);
 
+void gk104_clkgate_enable(struct nvkm_therm *);
+void gk104_clkgate_fini(struct nvkm_therm *, bool);
+
 int nvkm_fanpwm_create(struct nvkm_therm *, struct dcb_gpio_func *);
 int nvkm_fantog_create(struct nvkm_therm *, struct dcb_gpio_func *);
 int nvkm_fannil_create(struct nvkm_therm *);
-- 
2.14.3

This enables the second level of clockgating for Kepler1: BLCG
(presumably, this stands for block-level clockgating). This is a deeper
level of power savings then just CG_CTRL. Setting it up is as simple as
loading some mmio packs, and turning it on and off is still controlled
through CG_CTRL.

We also introduce the nvkm_therm_clkgate_init() helper, which handles
programming various BLCG register values while initializing the GPU, but
before CG_CTRL is enabled.

Enabling BLCG is done with the nouveau config option NvPmEnableGating=2.

As well, this commit shares a lot more code with Fermi since BLCG is
mostly the same there as far as we can tell. In the future, it's likely
we'll reformat the clkgate_packs for kepler1 so that they share a list
of mmio packs with Fermi.

Signed-off-by: Lyude Paul <lyude at redhat.com>
---
 .../gpu/drm/nouveau/include/nvkm/subdev/therm.h    |  14 ++
 drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.h     |   1 +
 drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.c     | 215 ++++++++++++++++++++-
 drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.h     |  55 ++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.c     |   6 +
 drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.c     |  53 +++++
 drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.h     |  35 ++++
 drivers/gpu/drm/nouveau/nvkm/subdev/fb/priv.h      |   3 +
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild   |   1 +
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c   |  15 +-
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.c  |  77 ++++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c  |   1 +
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gt215.c  |   2 +-
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h   |   8 +
 14 files changed, 482 insertions(+), 4 deletions(-)
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.h
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.h
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.c

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
b/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
index a9204c09975b..4b49561415ef 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
@@ -49,6 +49,18 @@ enum nvkm_therm_attr_type {
 enum nvkm_therm_clkgate_level {
 	NVKM_THERM_CLKGATE_NONE = 0,
 	NVKM_THERM_CLKGATE_CG, /* basic clockgating */
+	NVKM_THERM_CLKGATE_BLCG,
+};
+
+struct nvkm_therm_clkgate_init {
+	u32 addr;
+	u8  count;
+	u32 data;
+};
+
+struct nvkm_therm_clkgate_pack {
+	enum nvkm_therm_clkgate_level level;
+	const struct nvkm_therm_clkgate_init **init;
 };
 
 struct nvkm_therm {
@@ -97,6 +109,8 @@ struct nvkm_therm {
 int nvkm_therm_temp_get(struct nvkm_therm *);
 int nvkm_therm_fan_sense(struct nvkm_therm *);
 int nvkm_therm_cstate(struct nvkm_therm *, int, int);
+void nvkm_therm_clkgate_init(struct nvkm_therm *,
+			     const struct nvkm_therm_clkgate_pack *);
 void nvkm_therm_clkgate_enable(struct nvkm_therm *);
 void nvkm_therm_clkgate_fini(struct nvkm_therm *, bool);
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.h
b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.h
index d7c2adb9b543..c8ec3fd97155 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.h
@@ -137,6 +137,7 @@ struct gf100_gr_func {
 	int (*rops)(struct gf100_gr *);
 	int ppc_nr;
 	const struct gf100_grctx_func *grctx;
+	const struct nvkm_therm_clkgate_pack *clkgate_pack;
 	struct nvkm_sclass sclass[];
 };
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.c
b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.c
index 5e82f94c2245..93f750cbeade 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.c
@@ -22,6 +22,7 @@
  * Authors: Ben Skeggs <bskeggs at redhat.com>
  */
 #include "gf100.h"
+#include "gk104.h"
 #include "ctxgf100.h"
 
 #include <nvif/class.h>
@@ -173,6 +174,214 @@ gk104_gr_pack_mmio[] = {
 	{}
 };
 
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_main_0[] = {
+	{ 0x4041f0, 1, 0x00004046 },
+	{ 0x409890, 1, 0x00000045 },
+	{ 0x4098b0, 1, 0x0000007f },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_rstr2d_0[] = {
+	{ 0x4078c0, 1, 0x00000042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_unk_0[] = {
+	{ 0x406000, 1, 0x00004044 },
+	{ 0x405860, 1, 0x00004042 },
+	{ 0x40590c, 1, 0x00004042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gcc_0[] = {
+	{ 0x408040, 1, 0x00004044 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_sked_0[] = {
+	{ 0x407000, 1, 0x00004044 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_unk_1[] = {
+	{ 0x405bf0, 1, 0x00004044 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_ctxctl_0[] = {
+	{ 0x41a890, 1, 0x00000042 },
+	{ 0x41a8b0, 1, 0x0000007f },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_unk_0[] = {
+	{ 0x418500, 1, 0x00004042 },
+	{ 0x418608, 1, 0x00004042 },
+	{ 0x418688, 1, 0x00004042 },
+	{ 0x418718, 1, 0x00000042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_esetup_0[] = {
+	{ 0x418828, 1, 0x00000044 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_tpbus_0[] = {
+	{ 0x418bbc, 1, 0x00004042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_zcull_0[] = {
+	{ 0x418970, 1, 0x00004042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_tpconf_0[] = {
+	{ 0x418c70, 1, 0x00004042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_unk_1[] = {
+	{ 0x418cf0, 1, 0x00004042 },
+	{ 0x418d70, 1, 0x00004042 },
+	{ 0x418f0c, 1, 0x00004042 },
+	{ 0x418e0c, 1, 0x00004042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_gcc_0[] = {
+	{ 0x419020, 1, 0x00004042 },
+	{ 0x419038, 1, 0x00000042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_ffb_0[] = {
+	{ 0x418898, 1, 0x00000042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_tex_0[] = {
+	{ 0x419a40, 9, 0x00004042 },
+	{ 0x419acc, 1, 0x00004047 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_poly_0[] = {
+	{ 0x419868, 1, 0x00000042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_l1c_0[] = {
+	{ 0x419ccc, 3, 0x00000042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_unk_2[] = {
+	{ 0x419c70, 1, 0x00004045 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_mp_0[] = {
+	{ 0x419fd0, 1, 0x00004043 },
+	{ 0x419fd8, 1, 0x00004049 },
+	{ 0x419fe0, 2, 0x00004042 },
+	{ 0x419ff0, 1, 0x00004046 },
+	{ 0x419ff8, 1, 0x00004042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_gpc_ppc_0[] = {
+	{ 0x41be28, 1, 0x00000042 },
+	{ 0x41bfe8, 1, 0x00004042 },
+	{ 0x41bed0, 1, 0x00004042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_rop_zrop_0[] = {
+	{ 0x408810, 2, 0x00004042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_rop_0[] = {
+	{ 0x408a80, 6, 0x00004042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_rop_crop_0[] = {
+	{ 0x4089a8, 1, 0x00004042 },
+	{ 0x4089b0, 1, 0x00000042 },
+	{ 0x4089b8, 1, 0x00004042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_clkgate_blcg_init_pxbar_0[] = {
+	{ 0x13c820, 1, 0x0001007f },
+	{ 0x13cbe0, 1, 0x00000042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_pack
+gk104_clkgate_pack[] = {
+	{
+		NVKM_THERM_CLKGATE_BLCG,
+		(const struct nvkm_therm_clkgate_init*[]) {
+			 gk104_clkgate_blcg_init_main_0,
+			 gk104_clkgate_blcg_init_rstr2d_0,
+			 gk104_clkgate_blcg_init_unk_0,
+			 gk104_clkgate_blcg_init_gcc_0,
+			 gk104_clkgate_blcg_init_sked_0,
+			 gk104_clkgate_blcg_init_unk_1,
+			 gk104_clkgate_blcg_init_gpc_ctxctl_0,
+			 gk104_clkgate_blcg_init_gpc_unk_0,
+			 gk104_clkgate_blcg_init_gpc_esetup_0,
+			 gk104_clkgate_blcg_init_gpc_tpbus_0,
+			 gk104_clkgate_blcg_init_gpc_zcull_0,
+			 gk104_clkgate_blcg_init_gpc_tpconf_0,
+			 gk104_clkgate_blcg_init_gpc_unk_1,
+			 gk104_clkgate_blcg_init_gpc_gcc_0,
+			 gk104_clkgate_blcg_init_gpc_ffb_0,
+			 gk104_clkgate_blcg_init_gpc_tex_0,
+			 gk104_clkgate_blcg_init_gpc_poly_0,
+			 gk104_clkgate_blcg_init_gpc_l1c_0,
+			 gk104_clkgate_blcg_init_gpc_unk_2,
+			 gk104_clkgate_blcg_init_gpc_mp_0,
+			 gk104_clkgate_blcg_init_gpc_ppc_0,
+			 gk104_clkgate_blcg_init_rop_zrop_0,
+			 gk104_clkgate_blcg_init_rop_0,
+			 gk104_clkgate_blcg_init_rop_crop_0,
+			 gk104_clkgate_blcg_init_pxbar_0,
+			 NULL
+		}
+	},
+	{}
+};
+
 /*******************************************************************************
  * PGRAPH engine/subdev functions
 
******************************************************************************/
@@ -214,6 +423,9 @@ gk104_gr_init(struct gf100_gr *gr)
 	gr->func->init_gpc_mmu(gr);
 
 	gf100_gr_mmio(gr, gr->func->mmio);
+	if (gr->func->clkgate_pack)
+		nvkm_therm_clkgate_init(gr->base.engine.subdev.device->therm,
+					gr->func->clkgate_pack);
 
 	nvkm_wr32(device, GPC_UNIT(0, 0x3018), 0x00000001);
 
@@ -338,13 +550,14 @@ gk104_gr = {
 	.rops = gf100_gr_rops,
 	.ppc_nr = 1,
 	.grctx = &gk104_grctx,
+	.clkgate_pack = gk104_clkgate_pack,
 	.sclass = {
 		{ -1, -1, FERMI_TWOD_A },
 		{ -1, -1, KEPLER_INLINE_TO_MEMORY_A },
 		{ -1, -1, KEPLER_A, &gf100_fermi },
 		{ -1, -1, KEPLER_COMPUTE_A },
 		{}
-	}
+	},
 };
 
 int
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.h
b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.h
new file mode 100644
index 000000000000..a24c177365d1
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2018 Red Hat Inc.
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Lyude Paul <lyude at redhat.com>
+ */
+#ifndef __GK104_GR_H__
+#define __GK104_GR_H__
+
+#include <subdev/therm.h>
+
+extern const struct nvkm_therm_clkgate_init gk104_clkgate_blcg_init_main_0[];
+extern const struct nvkm_therm_clkgate_init gk104_clkgate_blcg_init_rstr2d_0[];
+extern const struct nvkm_therm_clkgate_init gk104_clkgate_blcg_init_unk_0[];
+extern const struct nvkm_therm_clkgate_init gk104_clkgate_blcg_init_gcc_0[];
+extern const struct nvkm_therm_clkgate_init gk104_clkgate_blcg_init_sked_0[];
+extern const struct nvkm_therm_clkgate_init gk104_clkgate_blcg_init_unk_1[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_ctxctl_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_unk_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_esetup_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_tpbus_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_zcull_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_tpconf_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_unk_1[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_gcc_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_ffb_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_tex_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_poly_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_l1c_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_unk_2[];
+extern const struct nvkm_therm_clkgate_init gk104_clkgate_blcg_init_gpc_mp_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_gpc_ppc_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_rop_zrop_0[];
+extern const struct nvkm_therm_clkgate_init gk104_clkgate_blcg_init_rop_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_clkgate_blcg_init_rop_crop_0[];
+extern const struct nvkm_therm_clkgate_init gk104_clkgate_blcg_init_pxbar_0[];
+
+#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.c
index 47d28c279707..cdc4e0a2cc6b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.c
@@ -26,6 +26,7 @@
 
 #include <core/memory.h>
 #include <core/option.h>
+#include <subdev/therm.h>
 
 void
 gf100_fb_intr(struct nvkm_fb *base)
@@ -92,6 +93,11 @@ gf100_fb_init(struct nvkm_fb *base)
 
 	if (fb->r100c10_page)
 		nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8);
+
+	if (base->func->clkgate_pack) {
+		nvkm_therm_clkgate_init(device->therm,
+					base->func->clkgate_pack);
+	}
 }
 
 void *
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.c
index 0a6e8eaad42c..edfdf325ba76 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.c
@@ -20,10 +20,62 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  *
  * Authors: Ben Skeggs
+ *          Lyude Paul
  */
+#include "gk104.h"
 #include "gf100.h"
 #include "ram.h"
 
+/*
+
*******************************************************************************
+ * PGRAPH registers for clockgating
+
*******************************************************************************
+ */
+const struct nvkm_therm_clkgate_init
+gk104_fb_clkgate_blcg_init_unk_0[] = {
+	{ 0x100d10, 1, 0x0000c244 },
+	{ 0x100d30, 1, 0x0000c242 },
+	{ 0x100d3c, 1, 0x00000242 },
+	{ 0x100d48, 1, 0x00000242 },
+	{ 0x100d1c, 1, 0x00000042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_fb_clkgate_blcg_init_vm_0[] = {
+	{ 0x100c98, 1, 0x00000242 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_fb_clkgate_blcg_init_main_0[] = {
+	{ 0x10f000, 1, 0x00000042 },
+	{ 0x17e030, 1, 0x00000044 },
+	{ 0x17e040, 1, 0x00000044 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk104_fb_clkgate_blcg_init_bcast_0[] = {
+	{ 0x17ea60, 4, 0x00000044 },
+	{}
+};
+
+static const struct nvkm_therm_clkgate_pack
+gk104_fb_clkgate_pack[] = {
+	{
+		NVKM_THERM_CLKGATE_BLCG,
+		(const struct nvkm_therm_clkgate_init*[]) {
+			gk104_fb_clkgate_blcg_init_unk_0,
+			gk104_fb_clkgate_blcg_init_vm_0,
+			gk104_fb_clkgate_blcg_init_main_0,
+			gk104_fb_clkgate_blcg_init_bcast_0,
+			NULL
+		}
+	},
+	{}
+};
+
 static const struct nvkm_fb_func
 gk104_fb = {
 	.dtor = gf100_fb_dtor,
@@ -33,6 +85,7 @@ gk104_fb = {
 	.intr = gf100_fb_intr,
 	.ram_new = gk104_ram_new,
 	.default_bigpage = 17,
+	.clkgate_pack = gk104_fb_clkgate_pack,
 };
 
 int
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.h
b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.h
new file mode 100644
index 000000000000..b3c78e4ff706
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2018 Red Hat Inc.
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Lyude Paul
+ */
+
+#ifndef __GK104_FB_H__
+#define __GK104_FB_H__
+
+#include <subdev/therm.h>
+
+extern const struct nvkm_therm_clkgate_init gk104_fb_clkgate_blcg_init_unk_0[];
+extern const struct nvkm_therm_clkgate_init gk104_fb_clkgate_blcg_init_vm_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_fb_clkgate_blcg_init_main_0[];
+extern const struct nvkm_therm_clkgate_init
gk104_fb_clkgate_blcg_init_bcast_0[];
+
+#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/priv.h
b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/priv.h
index 9351188d5d76..cc6e0cbf761b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/priv.h
@@ -3,6 +3,7 @@
 #define __NVKM_FB_PRIV_H__
 #define nvkm_fb(p) container_of((p), struct nvkm_fb, subdev)
 #include <subdev/fb.h>
+#include <subdev/therm.h>
 struct nvkm_bios;
 
 struct nvkm_fb_func {
@@ -27,6 +28,7 @@ struct nvkm_fb_func {
 	int (*ram_new)(struct nvkm_fb *, struct nvkm_ram **);
 
 	u8 default_bigpage;
+	const struct nvkm_therm_clkgate_pack *clkgate_pack;
 };
 
 void nvkm_fb_ctor(const struct nvkm_fb_func *, struct nvkm_device *device,
@@ -66,4 +68,5 @@ int gf100_fb_oneinit(struct nvkm_fb *);
 int gf100_fb_init_page(struct nvkm_fb *);
 
 int gm200_fb_init_page(struct nvkm_fb *);
+
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild
index 4bac4772d8ed..550702eab0b1 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild
@@ -9,6 +9,7 @@ nvkm-y += nvkm/subdev/therm/nv40.o
 nvkm-y += nvkm/subdev/therm/nv50.o
 nvkm-y += nvkm/subdev/therm/g84.o
 nvkm-y += nvkm/subdev/therm/gt215.o
+nvkm-y += nvkm/subdev/therm/gf100.o
 nvkm-y += nvkm/subdev/therm/gf119.o
 nvkm-y += nvkm/subdev/therm/gk104.o
 nvkm-y += nvkm/subdev/therm/gm107.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
index ba1a3aabb559..ee028d099f6a 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
@@ -330,7 +330,8 @@ nvkm_therm_clkgate_oneinit(struct nvkm_therm *therm)
 		return;
 
 	switch (therm->clkgate_level) {
-	case NVKM_THERM_CLKGATE_CG: clkgate_str = "CG"; break;
+	case NVKM_THERM_CLKGATE_CG:   clkgate_str = "CG"; break;
+	case NVKM_THERM_CLKGATE_BLCG: clkgate_str = "BLCG"; break;
 	default: BUG();
 	}
 
@@ -400,6 +401,16 @@ nvkm_therm_init(struct nvkm_subdev *subdev)
 	return 0;
 }
 
+void
+nvkm_therm_clkgate_init(struct nvkm_therm *therm,
+			const struct nvkm_therm_clkgate_pack *p)
+{
+	if (!therm->clkgate_level || !therm->func->clkgate_init)
+		return;
+
+	therm->func->clkgate_init(therm, p);
+}
+
 static void *
 nvkm_therm_dtor(struct nvkm_subdev *subdev)
 {
@@ -438,7 +449,7 @@ nvkm_therm_ctor(struct nvkm_therm *therm, struct nvkm_device
*device,
 		clamp((int)nvkm_longopt(device->cfgopt,
 					"NvPmEnableGating",
 					NVKM_THERM_CLKGATE_NONE),
-		      NVKM_THERM_CLKGATE_NONE, NVKM_THERM_CLKGATE_CG);
+		      NVKM_THERM_CLKGATE_NONE, NVKM_THERM_CLKGATE_BLCG);
 }
 
 int
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.c
new file mode 100644
index 000000000000..a2aa528e8854
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2018 Red Hat Inc.
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Lyude Paul
+ */
+#include <core/device.h>
+
+#include "priv.h"
+
+void
+gf100_clkgate_init(struct nvkm_therm *therm,
+		   const struct nvkm_therm_clkgate_pack *p)
+{
+	struct nvkm_device *device = therm->subdev.device;
+	const struct nvkm_therm_clkgate_pack *subpack;
+	const struct nvkm_therm_clkgate_init *init;
+	int i, j;
+
+	for (i = 0, subpack = &p[i];
+	     subpack->level != NVKM_THERM_CLKGATE_NONE;
+	     subpack = &p[++i]) {
+		if (subpack->level > therm->clkgate_level)
+			continue;
+
+		for (j = 0, init = subpack->init[j];
+		     init && init->count != 0;
+		     init = subpack->init[++j]) {
+			u32 next = init->addr + init->count * 8,
+			    addr = init->addr;
+
+			while (addr < next) {
+				nvkm_wr32(device, addr, init->data);
+				addr += 8;
+			}
+		}
+	}
+}
+
+static const struct nvkm_therm_func
+gf100_therm_func = {
+	.init = gt215_therm_init,
+	.fini = g84_therm_fini,
+	.pwm_ctrl = nv50_fan_pwm_ctrl,
+	.pwm_get = nv50_fan_pwm_get,
+	.pwm_set = nv50_fan_pwm_set,
+	.pwm_clock = nv50_fan_pwm_clock,
+	.temp_get = g84_temp_get,
+	.fan_sense = gt215_therm_fan_sense,
+	.program_alarms = nvkm_therm_program_alarms_polling,
+	/* TODO: Fermi clockgating isn't understood fully yet, so we leave it
+	 * disabled here */
+};
+
+int
+gf100_therm_new(struct nvkm_device *device, int index,
+		struct nvkm_therm **ptherm)
+{
+	return nvkm_therm_new_(&gf100_therm_func, device, index, ptherm);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
index 81bc73a6d143..efc8a23b55f8 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
@@ -100,6 +100,7 @@ gk104_therm_func = {
 	.temp_get = g84_temp_get,
 	.fan_sense = gt215_therm_fan_sense,
 	.program_alarms = nvkm_therm_program_alarms_polling,
+	.clkgate_init = gf100_clkgate_init,
 	.clkgate_enable = gk104_clkgate_enable,
 	.clkgate_fini = gk104_clkgate_fini,
 };
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gt215.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gt215.c
index c08097f2aff5..4caf401d001a 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gt215.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gt215.c
@@ -36,7 +36,7 @@ gt215_therm_fan_sense(struct nvkm_therm *therm)
 	return -ENODEV;
 }
 
-static void
+void
 gt215_therm_init(struct nvkm_therm *therm)
 {
 	struct nvkm_device *device = therm->subdev.device;
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h
index f30202dd88e7..a737e9b8a584 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h
@@ -97,6 +97,8 @@ struct nvkm_therm_func {
 
 	void (*program_alarms)(struct nvkm_therm *);
 
+	void (*clkgate_init)(struct nvkm_therm *,
+			     const struct nvkm_therm_clkgate_pack *);
 	void (*clkgate_enable)(struct nvkm_therm *);
 	void (*clkgate_fini)(struct nvkm_therm *, bool);
 };
@@ -114,6 +116,9 @@ void g84_therm_fini(struct nvkm_therm *);
 
 int gt215_therm_fan_sense(struct nvkm_therm *);
 
+void gf100_clkgate_init(struct nvkm_therm *,
+			const struct nvkm_therm_clkgate_pack *);
+
 void g84_therm_init(struct nvkm_therm *);
 
 int gf119_fan_pwm_ctrl(struct nvkm_therm *, int, bool);
@@ -122,6 +127,9 @@ int gf119_fan_pwm_set(struct nvkm_therm *, int, u32, u32);
 int gf119_fan_pwm_clock(struct nvkm_therm *, int);
 void gf119_therm_init(struct nvkm_therm *);
 
+void gt215_therm_init(struct nvkm_therm *therm);
+
+void gk104_therm_init(struct nvkm_therm *);
 void gk104_clkgate_enable(struct nvkm_therm *);
 void gk104_clkgate_fini(struct nvkm_therm *, bool);
 
-- 
2.14.3

This is mostly the same as Kepler1, but we save even more power!

Signed-off-by: Lyude Paul <lyude at redhat.com>
---
 drivers/gpu/drm/nouveau/include/nvkm/subdev/fb.h  |  1 +
 drivers/gpu/drm/nouveau/nvkm/engine/device/base.c |  8 +--
 drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110.c    | 68 ++++++++++++++++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/fb/Kbuild     |  1 +
 drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk110.c    | 77 +++++++++++++++++++++++
 5 files changed, 151 insertions(+), 4 deletions(-)
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk110.c

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fb.h
b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fb.h
index adb78f7d083a..92be0e5269c6 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fb.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fb.h
@@ -75,6 +75,7 @@ int mcp89_fb_new(struct nvkm_device *, int, struct nvkm_fb
**);
 int gf100_fb_new(struct nvkm_device *, int, struct nvkm_fb **);
 int gf108_fb_new(struct nvkm_device *, int, struct nvkm_fb **);
 int gk104_fb_new(struct nvkm_device *, int, struct nvkm_fb **);
+int gk110_fb_new(struct nvkm_device *, int, struct nvkm_fb **);
 int gk20a_fb_new(struct nvkm_device *, int, struct nvkm_fb **);
 int gm107_fb_new(struct nvkm_device *, int, struct nvkm_fb **);
 int gm200_fb_new(struct nvkm_device *, int, struct nvkm_fb **);
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
index 6c5f966c66ad..332586de9a7b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
@@ -1812,7 +1812,7 @@ nvf0_chipset = {
 	.bus = gf100_bus_new,
 	.clk = gk104_clk_new,
 	.devinit = gf100_devinit_new,
-	.fb = gk104_fb_new,
+	.fb = gk110_fb_new,
 	.fuse = gf100_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gk104_i2c_new,
@@ -1850,7 +1850,7 @@ nvf1_chipset = {
 	.bus = gf100_bus_new,
 	.clk = gk104_clk_new,
 	.devinit = gf100_devinit_new,
-	.fb = gk104_fb_new,
+	.fb = gk110_fb_new,
 	.fuse = gf100_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gk104_i2c_new,
@@ -1888,7 +1888,7 @@ nv106_chipset = {
 	.bus = gf100_bus_new,
 	.clk = gk104_clk_new,
 	.devinit = gf100_devinit_new,
-	.fb = gk104_fb_new,
+	.fb = gk110_fb_new,
 	.fuse = gf100_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gk104_i2c_new,
@@ -1926,7 +1926,7 @@ nv108_chipset = {
 	.bus = gf100_bus_new,
 	.clk = gk104_clk_new,
 	.devinit = gf100_devinit_new,
-	.fb = gk104_fb_new,
+	.fb = gk110_fb_new,
 	.fuse = gf100_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gk104_i2c_new,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110.c
b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110.c
index a38e19b61c1d..d26bfa3062e6 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110.c
@@ -22,6 +22,7 @@
  * Authors: Ben Skeggs <bskeggs at redhat.com>
  */
 #include "gf100.h"
+#include "gk104.h"
 #include "ctxgf100.h"
 
 #include <subdev/timer.h>
@@ -156,6 +157,72 @@ gk110_gr_pack_mmio[] = {
 	{}
 };
 
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_blcg_init_sked_0[] = {
+	{ 0x407000, 1, 0x00004041 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_blcg_init_gpc_gcc_0[] = {
+	{ 0x419020, 1, 0x00000042 },
+	{ 0x419038, 1, 0x00000042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_blcg_init_gpc_l1c_0[] = {
+	{ 0x419cd4, 2, 0x00004042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_blcg_init_gpc_mp_0[] = {
+	{ 0x419fd0, 1, 0x00004043 },
+	{ 0x419fd8, 1, 0x00004049 },
+	{ 0x419fe0, 2, 0x00004042 },
+	{ 0x419ff0, 1, 0x00000046 },
+	{ 0x419ff8, 1, 0x00004042 },
+	{ 0x419f90, 1, 0x00004042 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_pack
+gk110_clkgate_pack[] = {
+	{
+		NVKM_THERM_CLKGATE_BLCG,
+		(const struct nvkm_therm_clkgate_init*[]) {
+			gk104_clkgate_blcg_init_main_0,
+			gk104_clkgate_blcg_init_rstr2d_0,
+			gk104_clkgate_blcg_init_unk_0,
+			gk104_clkgate_blcg_init_gcc_0,
+			gk110_clkgate_blcg_init_sked_0,
+			gk104_clkgate_blcg_init_unk_1,
+			gk104_clkgate_blcg_init_gpc_ctxctl_0,
+			gk104_clkgate_blcg_init_gpc_unk_0,
+			gk104_clkgate_blcg_init_gpc_esetup_0,
+			gk104_clkgate_blcg_init_gpc_tpbus_0,
+			gk104_clkgate_blcg_init_gpc_zcull_0,
+			gk104_clkgate_blcg_init_gpc_tpconf_0,
+			gk104_clkgate_blcg_init_gpc_unk_1,
+			gk110_clkgate_blcg_init_gpc_gcc_0,
+			gk104_clkgate_blcg_init_gpc_ffb_0,
+			gk104_clkgate_blcg_init_gpc_tex_0,
+			gk104_clkgate_blcg_init_gpc_poly_0,
+			gk110_clkgate_blcg_init_gpc_l1c_0,
+			gk104_clkgate_blcg_init_gpc_unk_2,
+			gk110_clkgate_blcg_init_gpc_mp_0,
+			gk104_clkgate_blcg_init_gpc_ppc_0,
+			gk104_clkgate_blcg_init_rop_zrop_0,
+			gk104_clkgate_blcg_init_rop_0,
+			gk104_clkgate_blcg_init_rop_crop_0,
+			gk104_clkgate_blcg_init_pxbar_0,
+			NULL,
+		},
+	},
+	{}
+};
+
 /*******************************************************************************
  * PGRAPH engine/subdev functions
 
******************************************************************************/
@@ -192,6 +259,7 @@ gk110_gr = {
 	.rops = gf100_gr_rops,
 	.ppc_nr = 2,
 	.grctx = &gk110_grctx,
+	.clkgate_pack = gk110_clkgate_pack,
 	.sclass = {
 		{ -1, -1, FERMI_TWOD_A },
 		{ -1, -1, KEPLER_INLINE_TO_MEMORY_B },
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/Kbuild
b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/Kbuild
index 2571530e82f1..b4f22cce5d43 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/Kbuild
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/Kbuild
@@ -22,6 +22,7 @@ nvkm-y += nvkm/subdev/fb/mcp89.o
 nvkm-y += nvkm/subdev/fb/gf100.o
 nvkm-y += nvkm/subdev/fb/gf108.o
 nvkm-y += nvkm/subdev/fb/gk104.o
+nvkm-y += nvkm/subdev/fb/gk110.o
 nvkm-y += nvkm/subdev/fb/gk20a.o
 nvkm-y += nvkm/subdev/fb/gm107.o
 nvkm-y += nvkm/subdev/fb/gm200.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk110.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk110.c
new file mode 100644
index 000000000000..a08945f0f3eb
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk110.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2017 Red Hat Inc.
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Lyude Paul
+ */
+#include "gf100.h"
+#include "gk104.h"
+#include "ram.h"
+#include <subdev/therm.h>
+#include <subdev/fb.h>
+
+/*
+
*******************************************************************************
+ * PGRAPH registers for clockgating
+
*******************************************************************************
+ */
+
+const struct nvkm_therm_clkgate_init
+gk110_fb_clkgate_blcg_init_unk_0[] = {
+	{ 0x100d10, 1, 0x0000c242 },
+	{ 0x100d30, 1, 0x0000c242 },
+	{ 0x100d3c, 1, 0x00000242 },
+	{ 0x100d48, 1, 0x0000c242 },
+	{ 0x100d1c, 1, 0x00000042 },
+	{}
+};
+
+static const struct nvkm_therm_clkgate_pack
+gk110_fb_clkgate_pack[] = {
+	{
+		NVKM_THERM_CLKGATE_BLCG,
+		(const struct nvkm_therm_clkgate_init*[]) {
+			gk110_fb_clkgate_blcg_init_unk_0,
+			gk104_fb_clkgate_blcg_init_vm_0,
+			gk104_fb_clkgate_blcg_init_main_0,
+			gk104_fb_clkgate_blcg_init_bcast_0,
+			NULL
+		},
+	},
+	{}
+};
+
+static const struct nvkm_fb_func
+gk110_fb = {
+	.dtor = gf100_fb_dtor,
+	.oneinit = gf100_fb_oneinit,
+	.init = gf100_fb_init,
+	.init_page = gf100_fb_init_page,
+	.intr = gf100_fb_intr,
+	.ram_new = gk104_ram_new,
+	.default_bigpage = 17,
+	.clkgate_pack = gk110_fb_clkgate_pack,
+};
+
+int
+gk110_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
+{
+	return gf100_fb_new_(&gk110_fb, device, index, pfb);
+}
-- 
2.14.3

That's right, there's still more power saving to go! This enables the
third level of clockgating, SLCG (this stands for... we don't actually
know what this stands for yet :\). While the register values look a
little different, programming them is exactly the same as BLCG.
Additionally, it should be noted that SLCG was added starting with
kepler2, previous generations have no SLCG.

SLCG can be enabled with the nouveau config option, NvPmEnableGating=3

Signed-off-by: Lyude Paul <lyude at redhat.com>
---
 .../gpu/drm/nouveau/include/nvkm/subdev/therm.h    |   1 +
 drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110.c     | 108 +++++++++++++++++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c   |   3 +-
 3 files changed, 111 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
b/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
index 4b49561415ef..ba50207791e0 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
@@ -50,6 +50,7 @@ enum nvkm_therm_clkgate_level {
 	NVKM_THERM_CLKGATE_NONE = 0,
 	NVKM_THERM_CLKGATE_CG, /* basic clockgating */
 	NVKM_THERM_CLKGATE_BLCG,
+	NVKM_THERM_CLKGATE_SLCG,
 };
 
 struct nvkm_therm_clkgate_init {
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110.c
b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110.c
index d26bfa3062e6..35ad52529c9a 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110.c
@@ -187,6 +187,89 @@ gk110_clkgate_blcg_init_gpc_mp_0[] = {
 	{}
 };
 
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_slcg_init_main_0[] = {
+	{ 0x4041f4, 1, 0x00000000 },
+	{ 0x409894, 1, 0x00000000 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_slcg_init_unk_0[] = {
+	{ 0x406004, 1, 0x00000000 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_slcg_init_sked_0[] = {
+	{ 0x407004, 1, 0x00000000 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_slcg_init_gpc_ctxctl_0[] = {
+	{ 0x41a894, 1, 0x00000000 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_slcg_init_gpc_unk_0[] = {
+	{ 0x418504, 1, 0x00000000 },
+	{ 0x41860c, 1, 0x00000000 },
+	{ 0x41868c, 1, 0x00000000 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_slcg_init_gpc_esetup_0[] = {
+	{ 0x41882c, 1, 0x00000000 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_slcg_init_gpc_zcull_0[] = {
+	{ 0x418974, 1, 0x00000000 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_slcg_init_gpc_l1c_0[] = {
+	{ 0x419cd8, 2, 0x00000000 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_slcg_init_gpc_unk_1[] = {
+	{ 0x419c74, 1, 0x00000000 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_slcg_init_gpc_mp_0[] = {
+	{ 0x419fd4, 1, 0x00004a4a },
+	{ 0x419fdc, 1, 0x00000014 },
+	{ 0x419fe4, 1, 0x00000000 },
+	{ 0x419ff4, 1, 0x00001724 },
+	{}
+};
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_slcg_init_gpc_ppc_0[] = {
+	{ 0x41be2c, 1, 0x00000000 },
+	{}
+};
+
+/* TODO: add ELPG here */
+
+const struct nvkm_therm_clkgate_init
+gk110_clkgate_slcg_init_pcounter_0[] = {
+	{ 0x1be018, 1, 0x000001ff },
+	{ 0x1bc018, 1, 0x000001ff },
+	{ 0x1b8018, 1, 0x000001ff },
+	{ 0x1b4124, 1, 0x00000000 },
+	{}
+};
+
 const struct nvkm_therm_clkgate_pack
 gk110_clkgate_pack[] = {
 	{
@@ -220,6 +303,31 @@ gk110_clkgate_pack[] = {
 			NULL,
 		},
 	},
+	{
+		NVKM_THERM_CLKGATE_SLCG,
+		(const struct nvkm_therm_clkgate_init*[]) {
+			gk110_clkgate_slcg_init_main_0,
+			gk110_clkgate_slcg_init_unk_0,
+			gk110_clkgate_slcg_init_sked_0,
+			gk110_clkgate_slcg_init_gpc_ctxctl_0,
+			gk110_clkgate_slcg_init_gpc_unk_0,
+			gk110_clkgate_slcg_init_gpc_esetup_0,
+			gk110_clkgate_slcg_init_gpc_zcull_0,
+			gk110_clkgate_slcg_init_gpc_l1c_0,
+			gk110_clkgate_slcg_init_gpc_unk_1,
+			gk110_clkgate_slcg_init_gpc_mp_0,
+			gk110_clkgate_slcg_init_gpc_ppc_0,
+			NULL,
+		},
+	},
+	/* TODO: ELPG programming happens -here- */
+	{
+		NVKM_THERM_CLKGATE_SLCG,
+		(const struct nvkm_therm_clkgate_init*[]) {
+			gk110_clkgate_slcg_init_pcounter_0,
+			NULL
+		},
+	},
 	{}
 };
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
index ee028d099f6a..587dcc7444a7 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
@@ -332,6 +332,7 @@ nvkm_therm_clkgate_oneinit(struct nvkm_therm *therm)
 	switch (therm->clkgate_level) {
 	case NVKM_THERM_CLKGATE_CG:   clkgate_str = "CG"; break;
 	case NVKM_THERM_CLKGATE_BLCG: clkgate_str = "BLCG"; break;
+	case NVKM_THERM_CLKGATE_SLCG: clkgate_str = "SLCG"; break;
 	default: BUG();
 	}
 
@@ -449,7 +450,7 @@ nvkm_therm_ctor(struct nvkm_therm *therm, struct nvkm_device
*device,
 		clamp((int)nvkm_longopt(device->cfgopt,
 					"NvPmEnableGating",
 					NVKM_THERM_CLKGATE_NONE),
-		      NVKM_THERM_CLKGATE_NONE, NVKM_THERM_CLKGATE_BLCG);
+		      NVKM_THERM_CLKGATE_NONE, NVKM_THERM_CLKGATE_SLCG);
 }
 
 int
-- 
2.14.3

On 01/16/2018 12:06 AM, Lyude Paul wrote:
> It's here! After a lot of investigation, rewrites, and traces, I
present
> the patch series to implement all known levels of clockgating for
> Kepler1 and Kepler2 GPUs.
> 
> Starting with Fermi GPUs (this is probably present on earlier GPUs as
> well, but with a far less easy to manage interface), nvidia added two
> clockgating levels that are handled mostly in firmware (with the
> exception of course, of the driver initially programming all of the
> register values containing engine delays and that stuff):
>    - CG_CTRL - Main register for enabling/disabling clockgating for
>      engines and hw blocks
>    - BLCG - "Block-level clockgating", a deeper level of
clockgating
> Starting with kepler2 as well, nvidia also introduced:
>    - SLCG - "??? clockgating" even deeper level of clockgating
FWIW, SLCG stands for "second level clock gating".

Cheers,
Mikko

On 16/01/18 00:06, Lyude Paul wrote:
> This adds support for enabling automatic clockgating on nvidia GPUs for
> Kepler1, referred to as "CG" throughout the driver. This is one
of two
> powersaving levels that Kepler1 supports.
Thanks a lot for all this work! It was long overdue and it is nice to
see the project finally getting to an end, after passing into so many hands!
> 
> This introduces two therm helpers for controlling basic clockgating:
> 	nvkm_therm_clkgate_enable() - enables clockgating through
> 	CG_CTRL, done after initializing the GPU fully
> 	nvkm_therm_clkgate_fini() - prepares clockgating for suspend or
> 	driver unload
> 
> As well, we add the nouveau kernel config parameter NvPmEnableGating,
> which can be set to the highest level of clockgating (in this case, we
> only have CG) the user desires to enable. Since we've only had limited
> testing on this thus far, we disable this by default.
I am not sure I understand the purpose of this level here. As far as I
understand, you only have per-engine control whether you want to enable
CG or not. What you call BLCG and SLCG levels just mean "don't use the
boot values, but rather use our values (taken from nvidia)".

Now, here comes the nasty part: NVIDIA only ever validated the boot
values (I guess they are extremely safe ones), and the optimised values
(the ones coming from your patch 2, 3, and 4 along with the level 3.

I think introducing a single parameter that controls both CG, PG, and
automatic reclocking would be safer. For CG and PG, it would be a
all-or-nothing (either boot values, or everything like nvidia).
> 
> A lot of this code was originally going to be based off of fermi;
> however it turns out that while Fermi's the first line of GPUs that
> introduced this kind of power saving, Fermi requires more fine tuned
> control of the CG_CTRL registers from the driver while reclocking that
> we don't entirely understand yet.
> 
> For the simple parts we will be sharing with Fermi for certain however,
> we at least add those into a new subdev/therm/gf100.h header.
> 
> Signed-off-by: Lyude Paul <lyude at redhat.com>
> ---
>  .../gpu/drm/nouveau/include/nvkm/subdev/therm.h    |  10 ++
>  drivers/gpu/drm/nouveau/nvkm/engine/device/base.c  |  17 +--
>  drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild   |   1 +
>  drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c   |  72 +++++++++--
>  drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.h  |  35 ++++++
>  drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf119.c  |   8 +-
>  drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c  | 135
+++++++++++++++++++++
>  drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.h  |  56 +++++++++
>  drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h   |  15 ++-
>  9 files changed, 328 insertions(+), 21 deletions(-)
>  create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.h
>  create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
>  create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.h
> 
> diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
b/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
> index b1ac47eb786e..a9204c09975b 100644
> --- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
> +++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/therm.h
> @@ -46,6 +46,11 @@ enum nvkm_therm_attr_type {
>  	NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST = 17,
>  };
>  
> +enum nvkm_therm_clkgate_level {
> +	NVKM_THERM_CLKGATE_NONE = 0,
> +	NVKM_THERM_CLKGATE_CG, /* basic clockgating */
> +};
> +
>  struct nvkm_therm {
>  	const struct nvkm_therm_func *func;
>  	struct nvkm_subdev subdev;
> @@ -85,17 +90,22 @@ struct nvkm_therm {
>  
>  	int (*attr_get)(struct nvkm_therm *, enum nvkm_therm_attr_type);
>  	int (*attr_set)(struct nvkm_therm *, enum nvkm_therm_attr_type, int);
> +
> +	enum nvkm_therm_clkgate_level clkgate_level;
>  };
>  
>  int nvkm_therm_temp_get(struct nvkm_therm *);
>  int nvkm_therm_fan_sense(struct nvkm_therm *);
>  int nvkm_therm_cstate(struct nvkm_therm *, int, int);
> +void nvkm_therm_clkgate_enable(struct nvkm_therm *);
> +void nvkm_therm_clkgate_fini(struct nvkm_therm *, bool);
>  
>  int nv40_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
>  int nv50_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
>  int g84_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
>  int gt215_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
>  int gf119_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
> +int gk104_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
>  int gm107_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
>  int gm200_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
>  int gp100_therm_new(struct nvkm_device *, int, struct nvkm_therm **);
> diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
> index 00eeaaffeae5..6c5f966c66ad 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
> @@ -28,6 +28,7 @@
>  #include <core/option.h>
>  
>  #include <subdev/bios.h>
> +#include <subdev/therm.h>
>  
>  static DEFINE_MUTEX(nv_devices_mutex);
>  static LIST_HEAD(nv_devices);
> @@ -1682,7 +1683,7 @@ nve4_chipset = {
>  	.mxm = nv50_mxm_new,
>  	.pci = gk104_pci_new,
>  	.pmu = gk104_pmu_new,
> -	.therm = gf119_therm_new,
> +	.therm = gk104_therm_new,
>  	.timer = nv41_timer_new,
>  	.top = gk104_top_new,
>  	.volt = gk104_volt_new,
> @@ -1721,7 +1722,7 @@ nve6_chipset = {
>  	.mxm = nv50_mxm_new,
>  	.pci = gk104_pci_new,
>  	.pmu = gk104_pmu_new,
> -	.therm = gf119_therm_new,
> +	.therm = gk104_therm_new,
>  	.timer = nv41_timer_new,
>  	.top = gk104_top_new,
>  	.volt = gk104_volt_new,
> @@ -1760,7 +1761,7 @@ nve7_chipset = {
>  	.mxm = nv50_mxm_new,
>  	.pci = gk104_pci_new,
>  	.pmu = gk104_pmu_new,
> -	.therm = gf119_therm_new,
> +	.therm = gk104_therm_new,
>  	.timer = nv41_timer_new,
>  	.top = gk104_top_new,
>  	.volt = gk104_volt_new,
> @@ -1824,7 +1825,7 @@ nvf0_chipset = {
>  	.mxm = nv50_mxm_new,
>  	.pci = gk104_pci_new,
>  	.pmu = gk110_pmu_new,
> -	.therm = gf119_therm_new,
> +	.therm = gk104_therm_new,
>  	.timer = nv41_timer_new,
>  	.top = gk104_top_new,
>  	.volt = gk104_volt_new,
> @@ -1862,7 +1863,7 @@ nvf1_chipset = {
>  	.mxm = nv50_mxm_new,
>  	.pci = gk104_pci_new,
>  	.pmu = gk110_pmu_new,
> -	.therm = gf119_therm_new,
> +	.therm = gk104_therm_new,
>  	.timer = nv41_timer_new,
>  	.top = gk104_top_new,
>  	.volt = gk104_volt_new,
> @@ -1900,7 +1901,7 @@ nv106_chipset = {
>  	.mxm = nv50_mxm_new,
>  	.pci = gk104_pci_new,
>  	.pmu = gk208_pmu_new,
> -	.therm = gf119_therm_new,
> +	.therm = gk104_therm_new,
>  	.timer = nv41_timer_new,
>  	.top = gk104_top_new,
>  	.volt = gk104_volt_new,
> @@ -1938,7 +1939,7 @@ nv108_chipset = {
>  	.mxm = nv50_mxm_new,
>  	.pci = gk104_pci_new,
>  	.pmu = gk208_pmu_new,
> -	.therm = gf119_therm_new,
> +	.therm = gk104_therm_new,
>  	.timer = nv41_timer_new,
>  	.top = gk104_top_new,
>  	.volt = gk104_volt_new,
> @@ -2508,6 +2509,7 @@ nvkm_device_fini(struct nvkm_device *device, bool
suspend)
>  		}
>  	}
>  
> +	nvkm_therm_clkgate_fini(device->therm, suspend);
>  
>  	if (device->func->fini)
>  		device->func->fini(device, suspend);
> @@ -2597,6 +2599,7 @@ nvkm_device_init(struct nvkm_device *device)
>  	}
>  
>  	nvkm_acpi_init(device);
> +	nvkm_therm_clkgate_enable(device->therm);
>  
>  	time = ktime_to_us(ktime_get()) - time;
>  	nvdev_trace(device, "init completed in %lldus\n", time);
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild
> index 7ba56b12badd..4bac4772d8ed 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/Kbuild
> @@ -10,6 +10,7 @@ nvkm-y += nvkm/subdev/therm/nv50.o
>  nvkm-y += nvkm/subdev/therm/g84.o
>  nvkm-y += nvkm/subdev/therm/gt215.o
>  nvkm-y += nvkm/subdev/therm/gf119.o
> +nvkm-y += nvkm/subdev/therm/gk104.o
>  nvkm-y += nvkm/subdev/therm/gm107.o
>  nvkm-y += nvkm/subdev/therm/gm200.o
>  nvkm-y += nvkm/subdev/therm/gp100.o
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
> index f27fc6d0d4c6..ba1a3aabb559 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
> @@ -21,6 +21,7 @@
>   *
>   * Authors: Martin Peres
>   */
> +#include <nvkm/core/option.h>
>  #include "priv.h"
>  
>  int
> @@ -297,6 +298,47 @@ nvkm_therm_attr_set(struct nvkm_therm *therm,
>  	return -EINVAL;
>  }
>  
> +void
> +nvkm_therm_clkgate_enable(struct nvkm_therm *therm)
> +{
> +	if (!therm->func->clkgate_enable || !therm->clkgate_level)
> +		return;
> +
> +	nvkm_debug(&therm->subdev,
> +		   "Enabling clock/powergating\n");
> +	therm->func->clkgate_enable(therm);
> +}
> +
> +void
> +nvkm_therm_clkgate_fini(struct nvkm_therm *therm, bool suspend)
> +{
> +	if (!therm->func->clkgate_fini || !therm->clkgate_level)
> +		return;
> +
> +	nvkm_debug(&therm->subdev,
> +		   "Preparing clock/powergating for %s\n",
> +		   suspend ? "suspend" : "fini");
> +	therm->func->clkgate_fini(therm, suspend);
> +}
> +
> +static void
> +nvkm_therm_clkgate_oneinit(struct nvkm_therm *therm)
> +{
> +	const char *clkgate_str;
> +
> +	if (!therm->func->clkgate_enable || !therm->clkgate_level)
> +		return;
> +
> +	switch (therm->clkgate_level) {
> +	case NVKM_THERM_CLKGATE_CG: clkgate_str = "CG"; break;
> +	default: BUG();
> +	}
> +
> +	nvkm_info(&therm->subdev,
> +		  "Clock/powergating enabled up to level %d (%s)\n",
> +		  therm->clkgate_level, clkgate_str);
This message is a bit odd, whether we keep the notion of levels or not.

Can you get rid of the mention of powergating given that this is not
part of this patchset?

If you agree with having a single enable bit for CG, then a simple:
"Clockgating status: (boot|optimized)" would work perfectly.
> +}
> +
>  static void
>  nvkm_therm_intr(struct nvkm_subdev *subdev)
>  {
> @@ -333,6 +375,7 @@ nvkm_therm_oneinit(struct nvkm_subdev *subdev)
>  	nvkm_therm_fan_ctor(therm);
>  	nvkm_therm_fan_mode(therm, NVKM_THERM_CTRL_AUTO);
>  	nvkm_therm_sensor_preinit(therm);
> +	nvkm_therm_clkgate_oneinit(therm);
>  	return 0;
>  }
>  
> @@ -374,15 +417,10 @@ nvkm_therm = {
>  	.intr = nvkm_therm_intr,
>  };
>  
> -int
> -nvkm_therm_new_(const struct nvkm_therm_func *func, struct nvkm_device
*device,
> -		int index, struct nvkm_therm **ptherm)
> +void
> +nvkm_therm_ctor(struct nvkm_therm *therm, struct nvkm_device *device,
> +		int index, const struct nvkm_therm_func *func)
>  {
> -	struct nvkm_therm *therm;
> -
> -	if (!(therm = *ptherm = kzalloc(sizeof(*therm), GFP_KERNEL)))
> -		return -ENOMEM;
> -
>  	nvkm_subdev_ctor(&nvkm_therm, device, index, &therm->subdev);
>  	therm->func = func;
>  
> @@ -395,5 +433,23 @@ nvkm_therm_new_(const struct nvkm_therm_func *func,
struct nvkm_device *device,
>  	therm->attr_get = nvkm_therm_attr_get;
>  	therm->attr_set = nvkm_therm_attr_set;
>  	therm->mode = therm->suspend = -1; /* undefined */
> +
> +	therm->clkgate_level > +	
clamp((int)nvkm_longopt(device->cfgopt,
> +					"NvPmEnableGating",
> +					NVKM_THERM_CLKGATE_NONE),
> +		      NVKM_THERM_CLKGATE_NONE, NVKM_THERM_CLKGATE_CG);
> +}
> +
> +int
> +nvkm_therm_new_(const struct nvkm_therm_func *func, struct nvkm_device
*device,
> +		int index, struct nvkm_therm **ptherm)
> +{
> +	struct nvkm_therm *therm;
> +
> +	if (!(therm = *ptherm = kzalloc(sizeof(*therm), GFP_KERNEL)))
> +		return -ENOMEM;
> +
> +	nvkm_therm_ctor(therm, device, index, func);
>  	return 0;
>  }
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.h
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.h
> new file mode 100644
> index 000000000000..cfb25af77c60
> --- /dev/null
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf100.h
> @@ -0,0 +1,35 @@
> +/*
> + * Copyright 2018 Red Hat Inc.
> + *
> + * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
> + *
> + * Authors: Lyude Paul
> + */
> +
> +#ifndef __GF100_THERM_H__
> +#define __GF100_THERM_H__
> +
> +#include <core/device.h>
> +
> +struct gf100_idle_filter {
> +	u32 fecs;
> +	u32 hubmmu;
> +};
> +
> +#endif
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf119.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf119.c
> index 06dcfd6ee966..0981b02790e2 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf119.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf119.c
> @@ -49,7 +49,7 @@ pwm_info(struct nvkm_therm *therm, int line)
>  	return -ENODEV;
>  }
>  
> -static int
> +int
>  gf119_fan_pwm_ctrl(struct nvkm_therm *therm, int line, bool enable)
>  {
>  	struct nvkm_device *device = therm->subdev.device;
> @@ -63,7 +63,7 @@ gf119_fan_pwm_ctrl(struct nvkm_therm *therm, int line,
bool enable)
>  	return 0;
>  }
>  
> -static int
> +int
>  gf119_fan_pwm_get(struct nvkm_therm *therm, int line, u32 *divs, u32
*duty)
>  {
>  	struct nvkm_device *device = therm->subdev.device;
> @@ -85,7 +85,7 @@ gf119_fan_pwm_get(struct nvkm_therm *therm, int line, u32
*divs, u32 *duty)
>  	return -EINVAL;
>  }
>  
> -static int
> +int
>  gf119_fan_pwm_set(struct nvkm_therm *therm, int line, u32 divs, u32 duty)
>  {
>  	struct nvkm_device *device = therm->subdev.device;
> @@ -102,7 +102,7 @@ gf119_fan_pwm_set(struct nvkm_therm *therm, int line,
u32 divs, u32 duty)
>  	return 0;
>  }
>  
> -static int
> +int
>  gf119_fan_pwm_clock(struct nvkm_therm *therm, int line)
>  {
>  	struct nvkm_device *device = therm->subdev.device;
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
> new file mode 100644
> index 000000000000..81bc73a6d143
> --- /dev/null
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.c
> @@ -0,0 +1,135 @@
> +/*
> + * Copyright 2018 Red Hat Inc.
> + *
> + * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
> + *
> + * Authors: Lyude Paul
> + */
> +#include <core/device.h>
> +
> +#include "priv.h"
> +#include "gk104.h"
> +
> +void
> +gk104_clkgate_enable(struct nvkm_therm *base)
> +{
> +	struct gk104_therm *therm = gk104_therm(base);
> +	struct nvkm_device *dev = therm->base.subdev.device;
> +	const struct gk104_clkgate_engine_info *order = therm->clkgate_order;
> +	int i;
> +
> +	/* Program ENG_MANT, ENG_FILTER */
> +	for (i = 0; order[i].engine != NVKM_SUBDEV_NR; i++) {
> +		if (!nvkm_device_subdev(dev, order[i].engine))
> +			continue;
> +
> +		nvkm_mask(dev, 0x20200 + order[i].offset, 0xff00, 0x4500);
> +	}
> +
> +	/* magic */
> +	nvkm_wr32(dev, 0x020288, therm->idle_filter->fecs);
> +	nvkm_wr32(dev, 0x02028c, therm->idle_filter->hubmmu);
All this time, I thought these parameters were for power gating... I
also did not expect that clock gating had to be disabled before we could
program them.

Great find!
> +
> +	/* Enable clockgating (ENG_CLK = RUN->AUTO) */
> +	for (i = 0; order[i].engine != NVKM_SUBDEV_NR; i++) {
> +		if (!nvkm_device_subdev(dev, order[i].engine))
> +			continue;
> +
> +		nvkm_mask(dev, 0x20200 + order[i].offset, 0x00ff, 0x0045);
> +	}
> +}
> +
> +void
> +gk104_clkgate_fini(struct nvkm_therm *base, bool suspend)
> +{
> +	struct gk104_therm *therm = gk104_therm(base);
> +	struct nvkm_device *dev = therm->base.subdev.device;
> +	const struct gk104_clkgate_engine_info *order = therm->clkgate_order;
> +	int i;
> +
> +	/* ENG_CLK = AUTO->RUN, ENG_PWR = RUN->AUTO */
> +	for (i = 0; order[i].engine != NVKM_SUBDEV_NR; i++) {
> +		if (!nvkm_device_subdev(dev, order[i].engine))
> +			continue;
> +
> +		nvkm_mask(dev, 0x20200 + order[i].offset, 0xff, 0x54);
> +	}
> +}
> +
> +const struct gk104_clkgate_engine_info gk104_clkgate_engine_info[] = {
> +	{ NVKM_ENGINE_GR,     0x00 },
> +	{ NVKM_ENGINE_MSPDEC, 0x04 },
> +	{ NVKM_ENGINE_MSPPP,  0x08 },
> +	{ NVKM_ENGINE_MSVLD,  0x0c },
> +	{ NVKM_ENGINE_CE0,    0x10 },
> +	{ NVKM_ENGINE_CE1,    0x14 },
> +	{ NVKM_ENGINE_MSENC,  0x18 },
> +	{ NVKM_ENGINE_CE2,    0x1c },
> +	{ NVKM_SUBDEV_NR, 0 },
> +};
> +
> +const struct gf100_idle_filter gk104_idle_filter = {
> +	.fecs = 0x00001000,
> +	.hubmmu = 0x00001000,
> +};
> +
> +static const struct nvkm_therm_func
> +gk104_therm_func = {
> +	.init = gf119_therm_init,
> +	.fini = g84_therm_fini,
> +	.pwm_ctrl = gf119_fan_pwm_ctrl,
> +	.pwm_get = gf119_fan_pwm_get,
> +	.pwm_set = gf119_fan_pwm_set,
> +	.pwm_clock = gf119_fan_pwm_clock,
> +	.temp_get = g84_temp_get,
> +	.fan_sense = gt215_therm_fan_sense,
> +	.program_alarms = nvkm_therm_program_alarms_polling,
> +	.clkgate_enable = gk104_clkgate_enable,
> +	.clkgate_fini = gk104_clkgate_fini,
> +};
> +
> +int
> +gk104_therm_new_(const struct nvkm_therm_func *func,
> +		 struct nvkm_device *device,
> +		 int index,
> +		 const struct gk104_clkgate_engine_info *clkgate_order,
> +		 const struct gf100_idle_filter *idle_filter,
> +		 struct nvkm_therm **ptherm)
> +{
> +	struct gk104_therm *therm = kzalloc(sizeof(*therm), GFP_KERNEL);
> +
> +	if (!therm)
> +		return -ENOMEM;
> +
> +	nvkm_therm_ctor(&therm->base, device, index, func);
> +	*ptherm = &therm->base;
> +	therm->clkgate_order = clkgate_order;
> +	therm->idle_filter = idle_filter;
> +
> +	return 0;
> +}
Why introduce gk104_therm_new_? I can't find references to it in this
patch (outside of the function below) or in the following patches.

As you even export this function, it looks like you used to use this
function in an earlier revision of this series.

Aside from all these nitpicks, the approach is quite self contained and
I like the following patches. Well done!

Once we settle on the configuration parameter, I can give you my R-b :)

Martin
> +
> +int
> +gk104_therm_new(struct nvkm_device *device,
> +		int index, struct nvkm_therm **ptherm)
> +{
> +	return gk104_therm_new_(&gk104_therm_func, device, index,
> +				gk104_clkgate_engine_info, &gk104_idle_filter,
> +				ptherm);
> +}
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.h
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.h
> new file mode 100644
> index 000000000000..a2bb5304469f
> --- /dev/null
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gk104.h
> @@ -0,0 +1,56 @@
> +/*
> + * Copyright 2018 Red Hat Inc.
> + *
> + * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
> + *
> + * Authors: Lyude Paul
> + */
> +
> +#ifndef __GK104_THERM_H__
> +#define __GK104_THERM_H__
> +#define gk104_therm(p) (container_of((p), struct gk104_therm, base))
> +
> +#include <subdev/therm.h>
> +#include "priv.h"
> +#include "gf100.h"
> +
> +struct gk104_clkgate_engine_info {
> +	enum nvkm_devidx engine;
> +	u8 offset;
> +};
> +
> +struct gk104_therm {
> +	struct nvkm_therm base;
> +
> +	const struct gk104_clkgate_engine_info *clkgate_order;
> +	const struct gf100_idle_filter *idle_filter;
> +};
> +
> +int
> +gk104_therm_new_(const struct nvkm_therm_func *func,
> +		 struct nvkm_device *device,
> +		 int,
> +		 const struct gk104_clkgate_engine_info *,
> +		 const struct gf100_idle_filter *,
> +		 struct nvkm_therm **);
> +
> +extern const struct gk104_clkgate_engine_info gk104_clkgate_engine_info[];
> +extern const struct gf100_idle_filter gk104_idle_filter;
> +
> +#endif
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h
b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h
> index 1f46e371d7c4..f30202dd88e7 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/priv.h
> @@ -32,6 +32,8 @@
>  
>  int nvkm_therm_new_(const struct nvkm_therm_func *, struct nvkm_device *,
>  		    int index, struct nvkm_therm **);
> +void nvkm_therm_ctor(struct nvkm_therm *therm, struct nvkm_device *device,
> +		     int index, const struct nvkm_therm_func *func);
>  
>  struct nvkm_fan {
>  	struct nvkm_therm *parent;
> @@ -66,8 +68,6 @@ int nvkm_therm_fan_set(struct nvkm_therm *, bool now, int
percent);
>  int nvkm_therm_fan_user_get(struct nvkm_therm *);
>  int nvkm_therm_fan_user_set(struct nvkm_therm *, int percent);
>  
> -int nvkm_therm_preinit(struct nvkm_therm *);
> -
>  int  nvkm_therm_sensor_init(struct nvkm_therm *);
>  int  nvkm_therm_sensor_fini(struct nvkm_therm *, bool suspend);
>  void nvkm_therm_sensor_preinit(struct nvkm_therm *);
> @@ -96,6 +96,9 @@ struct nvkm_therm_func {
>  	int (*fan_sense)(struct nvkm_therm *);
>  
>  	void (*program_alarms)(struct nvkm_therm *);
> +
> +	void (*clkgate_enable)(struct nvkm_therm *);
> +	void (*clkgate_fini)(struct nvkm_therm *, bool);
>  };
>  
>  void nv40_therm_intr(struct nvkm_therm *);
> @@ -112,8 +115,16 @@ void g84_therm_fini(struct nvkm_therm *);
>  int gt215_therm_fan_sense(struct nvkm_therm *);
>  
>  void g84_therm_init(struct nvkm_therm *);
> +
> +int gf119_fan_pwm_ctrl(struct nvkm_therm *, int, bool);
> +int gf119_fan_pwm_get(struct nvkm_therm *, int, u32 *, u32 *);
> +int gf119_fan_pwm_set(struct nvkm_therm *, int, u32, u32);
> +int gf119_fan_pwm_clock(struct nvkm_therm *, int);
>  void gf119_therm_init(struct nvkm_therm *);
>  
> +void gk104_clkgate_enable(struct nvkm_therm *);
> +void gk104_clkgate_fini(struct nvkm_therm *, bool);
> +
>  int nvkm_fanpwm_create(struct nvkm_therm *, struct dcb_gpio_func *);
>  int nvkm_fantog_create(struct nvkm_therm *, struct dcb_gpio_func *);
>  int nvkm_fannil_create(struct nvkm_therm *);
>