62 lines
2.2 KiB
Diff
62 lines
2.2 KiB
Diff
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From b526413a86afcd1d6bd3f4e05f25631c8103f617 Mon Sep 17 00:00:00 2001
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From: Vadim Pasternak <vadimp@nvidia.com>
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Date: Sun, 19 Dec 2021 09:25:35 +0000
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Subject: [PATCH] mlxsw: minimal: Add system event handler
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Add system event handler for treating line card specific signals on
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modular system. These signals indicate line card state changes, like
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line card activation or de-activation.
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When such signals are received, driver should create or destroy "hwmon"
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"thermal" and module info objects, associated with line card in a slot,
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for which signal has been received.
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Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
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---
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drivers/net/ethernet/mellanox/mlxsw/minimal.c | 23 +++++++++++++++++++
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1 file changed, 23 insertions(+)
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diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
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index 59c5053dc..27afb28e4 100644
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--- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c
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+++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
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@@ -527,6 +527,28 @@ static void mlxsw_m_line_cards_free(struct mlxsw_m *mlxsw_m)
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kfree(mlxsw_m->line_cards);
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}
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+static void mlxsw_m_sys_event_handler(struct mlxsw_core *mlxsw_core)
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+{
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+ struct mlxsw_linecards *linecards = mlxsw_core_linecards(mlxsw_core);
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+ struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core);
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+ char mddq_pl[MLXSW_REG_MDDQ_LEN];
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+ int i, err;
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+
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+ if (!linecards)
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+ return;
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+
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+ /* Handle line cards, for which active status has been changed. */
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+ for (i = 1; i <= linecards->count; i++) {
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+ mlxsw_reg_mddq_slot_info_pack(mddq_pl, i, false);
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+ err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(mddq), mddq_pl);
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+ if (err)
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+ dev_err(mlxsw_m->bus_info->dev, "Fail to query MDDQ register for slot %d\n",
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+ i);
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+
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+ mlxsw_linecard_status_process(mlxsw_m->core, mddq_pl);
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+ }
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+}
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+
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static int mlxsw_m_init(struct mlxsw_core *mlxsw_core,
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const struct mlxsw_bus_info *mlxsw_bus_info,
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struct netlink_ext_ack *extack)
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@@ -587,6 +609,7 @@ static struct mlxsw_driver mlxsw_m_driver = {
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.priv_size = sizeof(struct mlxsw_m),
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.init = mlxsw_m_init,
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.fini = mlxsw_m_fini,
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+ .sys_event_handler = mlxsw_m_sys_event_handler,
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.profile = &mlxsw_m_config_profile,
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.res_query_enabled = true,
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};
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--
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2.30.2
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