Commit f11a323d authored by Vadim Pasternak's avatar Vadim Pasternak Committed by David S. Miller
Browse files

mlxsw: core_thermal: Add interfaces for line card initialization and de-initialization 



Add callback functions for line card thermal area initialization and
de-initialization. Each line card is associated with the relevant
thermal area, which may contain thermal zones for cages and gearboxes
found on this line card.

The line card thermal initialization / de-initialization APIs are to be
called when line card is set to active / inactive state by
got_active() / got_inactive() callbacks from line card state machine.

For example thermal zone for module #9 located at line card #7 will
have type:
mlxsw-lc7-module9.
And thermal zone for gearbox #2 located at line card #5 will have type:
mlxsw-lc5-gearbox2.

Signed-off-by: default avatarVadim Pasternak <vadimp@nvidia.com>
Signed-off-by: default avatarIdo Schimmel <idosch@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 06a0fc43

drivers/net/ethernet/mellanox/mlxsw/core_thermal.c

+74 −0
Original line number Original line Diff line number Diff line
@@ -90,6 +90,7 @@ struct mlxsw_thermal_area { 
	struct mlxsw_thermal_module *tz_gearbox_arr;

	struct mlxsw_thermal_module *tz_gearbox_arr;

	u8 tz_gearbox_num;

	u8 tz_gearbox_num;

	u8 slot_index;

	u8 slot_index;

	bool active;

};

};





struct mlxsw_thermal {

struct mlxsw_thermal {
@@ -913,6 +914,64 @@ mlxsw_thermal_gearboxes_fini(struct mlxsw_thermal *thermal, 
	kfree(area->tz_gearbox_arr);

	kfree(area->tz_gearbox_arr);

}

}





static void

mlxsw_thermal_got_active(struct mlxsw_core *mlxsw_core, u8 slot_index,

			 void *priv)

{

	struct mlxsw_thermal *thermal = priv;

	struct mlxsw_thermal_area *linecard;

	int err;



	linecard = &thermal->line_cards[slot_index];



	if (linecard->active)

		return;



	linecard->slot_index = slot_index;

	err = mlxsw_thermal_modules_init(thermal->bus_info->dev, thermal->core,

					 thermal, linecard);

	if (err) {

		dev_err(thermal->bus_info->dev, "Failed to configure thermal objects for line card modules in slot %d\n",

			slot_index);

		return;

	}



	err = mlxsw_thermal_gearboxes_init(thermal->bus_info->dev,

					   thermal->core, thermal, linecard);

	if (err) {

		dev_err(thermal->bus_info->dev, "Failed to configure thermal objects for line card gearboxes in slot %d\n",

			slot_index);

		goto err_thermal_linecard_gearboxes_init;

	}



	linecard->active = true;



	return;



err_thermal_linecard_gearboxes_init:

	mlxsw_thermal_modules_fini(thermal, linecard);

}



static void

mlxsw_thermal_got_inactive(struct mlxsw_core *mlxsw_core, u8 slot_index,

			   void *priv)

{

	struct mlxsw_thermal *thermal = priv;

	struct mlxsw_thermal_area *linecard;



	linecard = &thermal->line_cards[slot_index];

	if (!linecard->active)

		return;

	linecard->active = false;

	mlxsw_thermal_gearboxes_fini(thermal, linecard);

	mlxsw_thermal_modules_fini(thermal, linecard);

}



static struct mlxsw_linecards_event_ops mlxsw_thermal_event_ops = {

	.got_active = mlxsw_thermal_got_active,

	.got_inactive = mlxsw_thermal_got_inactive,

};



int mlxsw_thermal_init(struct mlxsw_core *core,

int mlxsw_thermal_init(struct mlxsw_core *core,

		       const struct mlxsw_bus_info *bus_info,

		       const struct mlxsw_bus_info *bus_info,

		       struct mlxsw_thermal **p_thermal)

		       struct mlxsw_thermal **p_thermal)
@@ -1018,14 +1077,25 @@ int mlxsw_thermal_init(struct mlxsw_core *core, 
	if (err)

	if (err)

		goto err_thermal_gearboxes_init;

		goto err_thermal_gearboxes_init;





	err = mlxsw_linecards_event_ops_register(core,

						 &mlxsw_thermal_event_ops,

						 thermal);

	if (err)

		goto err_linecards_event_ops_register;



	err = thermal_zone_device_enable(thermal->tzdev);

	err = thermal_zone_device_enable(thermal->tzdev);

	if (err)

	if (err)

		goto err_thermal_zone_device_enable;

		goto err_thermal_zone_device_enable;





	thermal->line_cards[0].active = true;

	*p_thermal = thermal;

	*p_thermal = thermal;

	return 0;

	return 0;





err_thermal_zone_device_enable:

err_thermal_zone_device_enable:

	mlxsw_linecards_event_ops_unregister(thermal->core,

					     &mlxsw_thermal_event_ops,

					     thermal);

err_linecards_event_ops_register:

	mlxsw_thermal_gearboxes_fini(thermal, &thermal->line_cards[0]);

	mlxsw_thermal_gearboxes_fini(thermal, &thermal->line_cards[0]);

err_thermal_gearboxes_init:

err_thermal_gearboxes_init:

	mlxsw_thermal_modules_fini(thermal, &thermal->line_cards[0]);

	mlxsw_thermal_modules_fini(thermal, &thermal->line_cards[0]);
@@ -1049,6 +1119,10 @@ void mlxsw_thermal_fini(struct mlxsw_thermal *thermal) 
{

{

	int i;

	int i;





	thermal->line_cards[0].active = false;

	mlxsw_linecards_event_ops_unregister(thermal->core,

					     &mlxsw_thermal_event_ops,

					     thermal);

	mlxsw_thermal_gearboxes_fini(thermal, &thermal->line_cards[0]);

	mlxsw_thermal_gearboxes_fini(thermal, &thermal->line_cards[0]);

	mlxsw_thermal_modules_fini(thermal, &thermal->line_cards[0]);

	mlxsw_thermal_modules_fini(thermal, &thermal->line_cards[0]);

	if (thermal->tzdev) {

	if (thermal->tzdev) {