PMU response(intr callback for messages) can run faster
than the kthread posting commands to PMU.
This causes the PMU message callback to skip important pmu
state change(which happens just after the PMU command is posted).
Solution:
State change should be triggered from only inside the intr callback.
Other places can only update the pmu_state variable.
This change also adds error check to print in case command post fails.
JIRA GPUT19X-20
Change-Id: Ib0a4275440455342a898c93ea9d86c5822e039a7
Signed-off-by: Deepak Goyal <dgoyal@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1583577
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
In pmu_handle_pg_elpg_msg, when processing ELPG_MSG_DISALLOW_ACK, if current
pmu state is ELPG_BOOTING and GR_POWER_GATING is not supported, make sure
nvgpu_pmu_state_change updates the state_change flag, since PMU is now fully
initialized. In particular, this fixes PMU boot for dgpu, which does not support
GR_POWER_GATING.
JIRA EVLR-1776
Change-Id: I2feb97b0fb8248e9cb7945ac3189877c21815a4a
Signed-off-by: Peter Daifuku <pdaifuku@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1539102
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Nirav Patel <nipatel@nvidia.com>
ACCESS_ONCE() is used for making sure that in a given place of code
access a variable exactly once. It prevents compiler rearranging the
read from happening earlier.
Remove its use from cases where rearranging of the read does not
create problems.
Change-Id: I340f375e8fecc31f3a3fab543256069cb4c682dc
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1531649
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
- moved pg related code to pmu_pg.c under common/pmu folder
PG state machine support methods
PG ACK handlers
AELPG methods
PG enable/disable methods
-prepended with nvgpu_ for elpg/aelpg global methods
by replacing gk20a_
JIRA NVGPU-97
Change-Id: I2148a69ff86b5c5d43c521ff6e241db84afafd82
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: http://git-master/r/1498363
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
