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

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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: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vadim Pasternak 2022-04-19 17:54:30 +03:00 committed by David S. Miller
parent 06a0fc43bb
commit f11a323da4
1 changed files with 74 additions and 0 deletions
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74
drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
View File

@ -90,6 +90,7 @@ struct mlxsw_thermal_area {
struct mlxsw_thermal_module *tz_gearbox_arr;
u8 tz_gearbox_num;
u8 slot_index;
bool active;
};
struct mlxsw_thermal {
@ -913,6 +914,64 @@ mlxsw_thermal_gearboxes_fini(struct mlxsw_thermal *thermal,
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,
const struct mlxsw_bus_info *bus_info,
struct mlxsw_thermal **p_thermal)
@ -1018,14 +1077,25 @@ int mlxsw_thermal_init(struct mlxsw_core *core,
if (err)
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);
if (err)
goto err_thermal_zone_device_enable;
thermal->line_cards[0].active = true;
*p_thermal = thermal;
return 0;
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]);
err_thermal_gearboxes_init:
mlxsw_thermal_modules_fini(thermal, &thermal->line_cards[0]);
@ -1049,6 +1119,10 @@ void mlxsw_thermal_fini(struct mlxsw_thermal *thermal)
{
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_modules_fini(thermal, &thermal->line_cards[0]);
if (thermal->tzdev) {