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gpu: nvgpu: add cg and pg function

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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 c905858565 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>
This commit is contained in:
Debarshi Dutta
2019-04-30 13:54:08 +05:30
committed by mobile promotions
parent f495f52c70
commit c81cc032c4
24 changed files with 984 additions and 354 deletions
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66
drivers/gpu/nvgpu/common/power_features/power_features.c Normal file
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/*
* 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.
*/
#include <nvgpu/gk20a.h>
#include <nvgpu/power_features/cg.h>
#include <nvgpu/power_features/pg.h>
#include <nvgpu/power_features/power_features.h>
int nvgpu_cg_pg_disable(struct gk20a *g)
{
int err = 0;
nvgpu_log_fn(g, " ");
/* disable elpg before clock gating */
err = nvgpu_pg_elpg_disable(g);
if (err != 0) {
nvgpu_err(g, "failed to set disable elpg");
}
nvgpu_cg_slcg_gr_perf_ltc_load_disable(g);
nvgpu_cg_blcg_mode_disable(g);
nvgpu_cg_elcg_disable(g);
return err;
}
int nvgpu_cg_pg_enable(struct gk20a *g)
{
int err = 0;
nvgpu_log_fn(g, " ");
nvgpu_cg_elcg_enable(g);
nvgpu_cg_blcg_mode_enable(g);
nvgpu_cg_slcg_gr_perf_ltc_load_enable(g);
err = nvgpu_pg_elpg_enable(g);
if (err != 0) {
nvgpu_err(g, "failed to set enable elpg");
}
return err;
}