gpu: nvgpu: add cg and pg function

Add new power/clock gating functions that can be called by
other units.

New clock_gating functions will reside in cg.c under
common/power_features/cg unit.

New power gating functions will reside in pg.c under
common/power_features/pg unit.

Use nvgpu_pg_elpg_disable and nvgpu_pg_elpg_enable to disable/enable
elpg and also in gr_gk20a_elpg_protected macro to access gr registers.

Add cg_pg_lock to make elpg_enabled, elcg_enabled, blcg_enabled
and slcg_enabled thread safe.

JIRA NVGPU-2014

Change-Id: I00d124c2ee16242c9a3ef82e7620fbb7f1297aff
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2025493
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
(cherry-picked from c90585856567a547173a8b207365b3a4a3ccdd57 in
dev-kernel)
Reviewed-on: https://git-master.nvidia.com/r/2108406
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

3 files changed, 125 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/include/nvgpu/power_features/cg.h b/drivers/gpu/nvgpu/include/nvgpu/power_features/cg.h
new file mode 100644
index 00000000..3bb86267
--- /dev/null
+++ b/drivers/gpu/nvgpu/include/nvgpu/power_features/cg.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2019, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+
+#ifndef NVGPU_POWER_FEATURES_CG_H
+#define NVGPU_POWER_FEATURES_CG_H
+
+#include <nvgpu/types.h>
+
+struct gk20a;
+struct fifo_gk20a;
+
+void nvgpu_cg_init_gr_load_gating_prod(struct gk20a *g);
+void nvgpu_cg_elcg_enable(struct gk20a *g);
+void nvgpu_cg_elcg_disable(struct gk20a *g);
+void nvgpu_cg_elcg_set_elcg_enabled(struct gk20a *g, bool enable);
+
+void nvgpu_cg_blcg_mode_enable(struct gk20a *g);
+void nvgpu_cg_blcg_mode_disable(struct gk20a *g);
+void nvgpu_cg_blcg_fb_ltc_load_enable(struct gk20a *g);
+void nvgpu_cg_blcg_fifo_load_enable(struct gk20a *g);
+void nvgpu_cg_blcg_pmu_load_enable(struct gk20a *g);
+void nvgpu_cg_blcg_ce_load_enable(struct gk20a *g);
+void nvgpu_cg_blcg_gr_load_enable(struct gk20a *g);
+void nvgpu_cg_blcg_set_blcg_enabled(struct gk20a *g, bool enable);
+
+void nvgpu_cg_slcg_gr_perf_ltc_load_enable(struct gk20a *g);
+void nvgpu_cg_slcg_gr_perf_ltc_load_disable(struct gk20a *g);
+void nvgpu_cg_slcg_fb_ltc_load_enable(struct gk20a *g);
+void nvgpu_cg_slcg_priring_load_enable(struct gk20a *g);
+void nvgpu_cg_slcg_fifo_load_enable(struct gk20a *g);
+void nvgpu_cg_slcg_pmu_load_enable(struct gk20a *g);
+void nvgpu_cg_slcg_ce2_load_enable(struct gk20a *g);
+void nvgpu_cg_slcg_set_slcg_enabled(struct gk20a *g, bool enable);
+
+#endif /*NVGPU_POWER_FEATURES_CG_H*/
diff --git a/drivers/gpu/nvgpu/include/nvgpu/power_features/pg.h b/drivers/gpu/nvgpu/include/nvgpu/power_features/pg.h
new file mode 100644
index 00000000..d7357807
--- /dev/null
+++ b/drivers/gpu/nvgpu/include/nvgpu/power_features/pg.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2019, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+
+#ifndef NVGPU_POWER_FEATURES_PG_H
+#define NVGPU_POWER_FEATURES_PG_H
+
+#include <nvgpu/types.h>
+
+struct gk20a;
+
+int nvgpu_pg_elpg_disable(struct gk20a *g);
+int nvgpu_pg_elpg_enable(struct gk20a *g);
+bool nvgpu_pg_elpg_is_enabled(struct gk20a *g);
+int nvgpu_pg_elpg_set_elpg_enabled(struct gk20a *g, bool enable);
+
+#endif /*NVGPU_POWER_FEATURES_PG_H*/
diff --git a/drivers/gpu/nvgpu/include/nvgpu/power_features/power_features.h b/drivers/gpu/nvgpu/include/nvgpu/power_features/power_features.h
new file mode 100644
index 00000000..f6ffccf1
--- /dev/null
+++ b/drivers/gpu/nvgpu/include/nvgpu/power_features/power_features.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2019, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+
+#ifndef NVGPU_POWER_FEATURES_H
+#define NVGPU_POWER_FEATURES_H
+
+#include <nvgpu/types.h>
+
+struct gk20a;
+
+int nvgpu_cg_pg_disable(struct gk20a *g);
+int nvgpu_cg_pg_enable(struct gk20a *g);
+
+#endif /*NVGPU_POWER_FEATURES_H*/