gpu: nvgpu: update thermal programming

Add required fileds and values for thermal slow-down
settings in thermal header file and implemented chip
specific thermal register programming

Reviewed-on: http://git-master/r/822199
(cherry picked from commit 9e8a745b8295af002b9780c83caa8dc7b22cc737)

Change-Id: I016b18ed230fa6c104eada2e166ccd1a5f2ace36
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: http://git-master/r/823012
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

drivers/gpu/nvgpu/Makefile

@@ -62,7 +62,8 @@ nvgpu-y := \
 	gm20b/regops_gm20b.o \
 	gm20b/mc_gm20b.o \
 	gm20b/debug_gm20b.o \
-	gm20b/cde_gm20b.o
+	gm20b/cde_gm20b.o \
+	gm20b/therm_gm20b.o
 
 nvgpu-$(CONFIG_TEGRA_GK20A) += gk20a/platform_gk20a_tegra.o
 nvgpu-$(CONFIG_SYNC) += gk20a/sync_gk20a.o

drivers/gpu/nvgpu/gk20a/gk20a.h

@@ -387,6 +387,9 @@ struct gpu_ops {
 		u64 (*get_iova_addr)(struct gk20a *g, struct scatterlist *sgl,
 					 u32 flags);
 	} mm;
+	struct {
+		int (*init_therm_setup_hw)(struct gk20a *g);
+	} therm;
 	struct {
 		int (*prepare_ucode)(struct gk20a *g);
 		int (*pmu_setup_hw_and_bootstrap)(struct gk20a *g);

drivers/gpu/nvgpu/gk20a/hal_gk20a.c

@@ -27,6 +27,7 @@
 #include "pmu_gk20a.h"
 #include "clk_gk20a.h"
 #include "regops_gk20a.h"
+#include "therm_gk20a.h"
 
 static struct gpu_ops gk20a_ops = {
 	.clock_gating = {
@@ -65,6 +66,7 @@ int gk20a_init_hal(struct gk20a *g)
 	gk20a_init_clk_ops(gops);
 	gk20a_init_regops(gops);
 	gk20a_init_debug_ops(gops);
+	gk20a_init_therm_ops(gops);
 	gops->name = "gk20a";
 
 	c->twod_class = FERMI_TWOD_A;

drivers/gpu/nvgpu/gk20a/hw_therm_gk20a.h

@@ -54,18 +54,66 @@ static inline u32 therm_use_a_r(void)
 {
 	return 0x00020798;
 }
+static inline u32 therm_use_a_ext_therm_0_enable_f(void)
+{
+	return 0x1;
+}
+static inline u32 therm_use_a_ext_therm_1_enable_f(void)
+{
+	return 0x2;
+}
+static inline u32 therm_use_a_ext_therm_2_enable_f(void)
+{
+	return 0x4;
+}
 static inline u32 therm_evt_ext_therm_0_r(void)
 {
 	return 0x00020700;
 }
+static inline u32 therm_evt_ext_therm_0_slow_factor_f(u32 v)
+{
+	return (v & 0x3f) << 8;
+}
+static inline u32 therm_evt_ext_therm_0_slow_factor_init_v(void)
+{
+	return 0x00000000;
+}
+static inline u32 therm_evt_ext_therm_0_priority_f(u32 v)
+{
+	return (v & 0x1f) << 24;
+}
 static inline u32 therm_evt_ext_therm_1_r(void)
 {
 	return 0x00020704;
 }
+static inline u32 therm_evt_ext_therm_1_slow_factor_f(u32 v)
+{
+	return (v & 0x3f) << 8;
+}
+static inline u32 therm_evt_ext_therm_1_slow_factor_init_v(void)
+{
+	return 0x00000000;
+}
+static inline u32 therm_evt_ext_therm_1_priority_f(u32 v)
+{
+	return (v & 0x1f) << 24;
+}
 static inline u32 therm_evt_ext_therm_2_r(void)
 {
 	return 0x00020708;
 }
+static inline u32 therm_evt_ext_therm_2_slow_factor_f(u32 v)
+{
+	return (v & 0x3f) << 8;
+}
+static inline u32 therm_evt_ext_therm_2_slow_factor_init_v(void)
+{
+	return 0x00000000;
+}
+static inline u32 therm_evt_ext_therm_2_priority_f(u32 v)
+{
+	return (v & 0x1f) << 24;
+}
 static inline u32 therm_weight_1_r(void)
 {
 	return 0x00020024;

drivers/gpu/nvgpu/gk20a/therm_gk20a.c

@@ -3,7 +3,7 @@
  *
  * GK20A Therm
  *
- * Copyright (c) 2011-2014, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2011-2015, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -38,13 +38,20 @@ static int gk20a_init_therm_setup_hw(struct gk20a *g)
 	u32 v;
 
 	/* program NV_THERM registers */
-	gk20a_writel(g, therm_use_a_r(), NV_THERM_USE_A_INIT);
+	gk20a_writel(g, therm_use_a_r(), therm_use_a_ext_therm_0_enable_f() |
+			therm_use_a_ext_therm_1_enable_f()  |
+			therm_use_a_ext_therm_2_enable_f());
+	/* priority for EXT_THERM_0 event set to highest */
 	gk20a_writel(g, therm_evt_ext_therm_0_r(),
-		NV_THERM_EVT_EXT_THERM_0_INIT);
+		therm_evt_ext_therm_0_slow_factor_f(1) |
+		therm_evt_ext_therm_0_priority_f(3));
 	gk20a_writel(g, therm_evt_ext_therm_1_r(),
-		NV_THERM_EVT_EXT_THERM_1_INIT);
+		therm_evt_ext_therm_1_slow_factor_f(2) |
+		therm_evt_ext_therm_1_priority_f(2));
 	gk20a_writel(g, therm_evt_ext_therm_2_r(),
-		NV_THERM_EVT_EXT_THERM_2_INIT);
+		therm_evt_ext_therm_2_slow_factor_f(3) |
+		therm_evt_ext_therm_2_priority_f(1));
+
 
 	gk20a_writel(g, therm_grad_stepping_table_r(0),
 		therm_grad_stepping_table_slowdown_factor0_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by1p5_f()) |
@@ -92,9 +99,15 @@ int gk20a_init_therm_support(struct gk20a *g)
 	if (err)
 		return err;
 
-	err = gk20a_init_therm_setup_hw(g);
+	if (g->ops.therm.init_therm_setup_hw)
+		err = g->ops.therm.init_therm_setup_hw(g);
 	if (err)
 		return err;
 
 	return err;
 }
+
+void gk20a_init_therm_ops(struct gpu_ops *gops)
+{
+	gops->therm.init_therm_setup_hw = gk20a_init_therm_setup_hw;
+}

drivers/gpu/nvgpu/gk20a/therm_gk20a.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011 - 2014, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2011 - 2015, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -16,13 +16,8 @@
 #ifndef THERM_GK20A_H
 #define THERM_GK20A_H
 
-/* priority for EXT_THERM_0 event set to highest */
+struct gpu_ops;
-#define NV_THERM_EVT_EXT_THERM_0_INIT	0x3000100
+void gk20a_init_therm_ops(struct gpu_ops *gops);
-#define NV_THERM_EVT_EXT_THERM_1_INIT	0x2000200
-#define NV_THERM_EVT_EXT_THERM_2_INIT	0x1000300
-/* configures the thermal events that may cause clock slowdown */
-#define NV_THERM_USE_A_INIT	0x7
 
 int gk20a_init_therm_support(struct gk20a *g);
-
 #endif /* THERM_GK20A_H */

drivers/gpu/nvgpu/gm20b/hal_gm20b.c

@@ -33,6 +33,7 @@
 #include "regops_gm20b.h"
 #include "debug_gm20b.h"
 #include "cde_gm20b.h"
+#include "therm_gm20b.h"
 
 #define FUSE_OPT_PRIV_SEC_DIS_0 0x264
 #define PRIV_SECURITY_DISABLE 0x01
@@ -136,6 +137,7 @@ int gm20b_init_hal(struct gk20a *g)
 	gm20b_init_regops(gops);
 	gm20b_init_debug_ops(gops);
 	gm20b_init_cde_ops(gops);
+	gm20b_init_therm_ops(gops);
 	gops->name = "gm20b";
 
 	c->twod_class = FERMI_TWOD_A;

drivers/gpu/nvgpu/gm20b/hw_therm_gm20b.h

@@ -54,18 +54,54 @@ static inline u32 therm_use_a_r(void)
 {
 	return 0x00020798;
 }
+static inline u32 therm_use_a_ext_therm_0_enable_f(void)
+{
+	return 0x1;
+}
+static inline u32 therm_use_a_ext_therm_1_enable_f(void)
+{
+	return 0x2;
+}
+static inline u32 therm_use_a_ext_therm_2_enable_f(void)
+{
+	return 0x4;
+}
 static inline u32 therm_evt_ext_therm_0_r(void)
 {
 	return 0x00020700;
 }
+static inline u32 therm_evt_ext_therm_0_slow_factor_f(u32 v)
+{
+	return (v & 0x3f) << 8;
+}
+static inline u32 therm_evt_ext_therm_0_slow_factor_init_v(void)
+{
+	return 0x00000000;
+}
 static inline u32 therm_evt_ext_therm_1_r(void)
 {
 	return 0x00020704;
 }
+static inline u32 therm_evt_ext_therm_1_slow_factor_f(u32 v)
+{
+	return (v & 0x3f) << 8;
+}
+static inline u32 therm_evt_ext_therm_1_slow_factor_init_v(void)
+{
+	return 0x00000000;
+}
 static inline u32 therm_evt_ext_therm_2_r(void)
 {
 	return 0x00020708;
 }
+static inline u32 therm_evt_ext_therm_2_slow_factor_f(u32 v)
+{
+	return (v & 0x3f) << 8;
+}
+static inline u32 therm_evt_ext_therm_2_slow_factor_init_v(void)
+{
+	return 0x00000000;
+}
 static inline u32 therm_weight_1_r(void)
 {
 	return 0x00020024;

drivers/gpu/nvgpu/gm20b/therm_gm20b.c

@@ -0,0 +1,72 @@
+/*
+ * GM20B THERMAL
+ *
+ * Copyright (c) 2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include "gk20a/gk20a.h"
+#include "hw_therm_gm20b.h"
+
+static int gm20b_init_therm_setup_hw(struct gk20a *g)
+{
+	u32 v;
+
+	gk20a_dbg_fn("");
+
+	/* program NV_THERM registers */
+	gk20a_writel(g, therm_use_a_r(), therm_use_a_ext_therm_0_enable_f() |
+			therm_use_a_ext_therm_1_enable_f()  |
+			therm_use_a_ext_therm_2_enable_f());
+	gk20a_writel(g, therm_evt_ext_therm_0_r(),
+			therm_evt_ext_therm_0_slow_factor_f(1));
+	gk20a_writel(g, therm_evt_ext_therm_1_r(),
+			therm_evt_ext_therm_1_slow_factor_f(2));
+	gk20a_writel(g, therm_evt_ext_therm_2_r(),
+			therm_evt_ext_therm_2_slow_factor_f(3));
+
+	gk20a_writel(g, therm_grad_stepping_table_r(0),
+		therm_grad_stepping_table_slowdown_factor0_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by1p5_f()) |
+		therm_grad_stepping_table_slowdown_factor1_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by2_f()) |
+		therm_grad_stepping_table_slowdown_factor2_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by4_f()) |
+		therm_grad_stepping_table_slowdown_factor3_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f()) |
+		therm_grad_stepping_table_slowdown_factor4_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f()));
+	gk20a_writel(g, therm_grad_stepping_table_r(1),
+		therm_grad_stepping_table_slowdown_factor0_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f()) |
+		therm_grad_stepping_table_slowdown_factor1_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f()) |
+		therm_grad_stepping_table_slowdown_factor2_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f()) |
+		therm_grad_stepping_table_slowdown_factor3_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f()) |
+		therm_grad_stepping_table_slowdown_factor4_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f()));
+
+	v = gk20a_readl(g, therm_clk_timing_r(0));
+	v |= therm_clk_timing_grad_slowdown_enabled_f();
+	gk20a_writel(g, therm_clk_timing_r(0), v);
+
+	v = gk20a_readl(g, therm_config2_r());
+	v |= therm_config2_grad_enable_f(1);
+	v |= therm_config2_slowdown_factor_extended_f(1);
+	gk20a_writel(g, therm_config2_r(), v);
+
+	gk20a_writel(g, therm_grad_stepping1_r(),
+			therm_grad_stepping1_pdiv_duration_f(32));
+
+	v = gk20a_readl(g, therm_grad_stepping0_r());
+	v |= therm_grad_stepping0_feature_enable_f();
+	gk20a_writel(g, therm_grad_stepping0_r(), v);
+
+	return 0;
+}
+
+void gm20b_init_therm_ops(struct gpu_ops *gops)
+{
+	gops->therm.init_therm_setup_hw = gm20b_init_therm_setup_hw;
+
+}

drivers/gpu/nvgpu/gm20b/therm_gm20b.h

@@ -0,0 +1,21 @@
+/*
+ * GM20B THERMAL
+ *
+ * Copyright (c) 2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+#ifndef THERM_GM20B_H
+#define THERM_GM20B_H
+
+struct gpu_ops;
+void gm20b_init_therm_ops(struct gpu_ops *gops);
+
+#endif /* THERM_GM20B_H */