From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/net/ethernet/microchip/sparx5/sparx5_tc.c | 122 ++++++++++++++++++++++ 1 file changed, 122 insertions(+) create mode 100644 drivers/net/ethernet/microchip/sparx5/sparx5_tc.c (limited to 'drivers/net/ethernet/microchip/sparx5/sparx5_tc.c') diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_tc.c b/drivers/net/ethernet/microchip/sparx5/sparx5_tc.c new file mode 100644 index 000000000..dc2c3756e --- /dev/null +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_tc.c @@ -0,0 +1,122 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Microchip Sparx5 Switch driver + * + * Copyright (c) 2022 Microchip Technology Inc. and its subsidiaries. + */ + +#include + +#include "sparx5_tc.h" +#include "sparx5_main.h" +#include "sparx5_qos.h" + +static void sparx5_tc_get_layer_and_idx(u32 parent, u32 portno, u32 *layer, + u32 *idx) +{ + if (parent == TC_H_ROOT) { + *layer = 2; + *idx = portno; + } else { + u32 queue = TC_H_MIN(parent) - 1; + *layer = 0; + *idx = SPX5_HSCH_L0_GET_IDX(portno, queue); + } +} + +static int sparx5_tc_setup_qdisc_mqprio(struct net_device *ndev, + struct tc_mqprio_qopt_offload *m) +{ + m->qopt.hw = TC_MQPRIO_HW_OFFLOAD_TCS; + + if (m->qopt.num_tc == 0) + return sparx5_tc_mqprio_del(ndev); + else + return sparx5_tc_mqprio_add(ndev, m->qopt.num_tc); +} + +static int sparx5_tc_setup_qdisc_tbf(struct net_device *ndev, + struct tc_tbf_qopt_offload *qopt) +{ + struct sparx5_port *port = netdev_priv(ndev); + u32 layer, se_idx; + + sparx5_tc_get_layer_and_idx(qopt->parent, port->portno, &layer, + &se_idx); + + switch (qopt->command) { + case TC_TBF_REPLACE: + return sparx5_tc_tbf_add(port, &qopt->replace_params, layer, + se_idx); + case TC_TBF_DESTROY: + return sparx5_tc_tbf_del(port, layer, se_idx); + case TC_TBF_STATS: + return -EOPNOTSUPP; + default: + return -EOPNOTSUPP; + } + + return -EOPNOTSUPP; +} + +static int sparx5_tc_setup_qdisc_ets(struct net_device *ndev, + struct tc_ets_qopt_offload *qopt) +{ + struct tc_ets_qopt_offload_replace_params *params = + &qopt->replace_params; + struct sparx5_port *port = netdev_priv(ndev); + int i; + + /* Only allow ets on ports */ + if (qopt->parent != TC_H_ROOT) + return -EOPNOTSUPP; + + switch (qopt->command) { + case TC_ETS_REPLACE: + + /* We support eight priorities */ + if (params->bands != SPX5_PRIOS) + return -EOPNOTSUPP; + + /* Sanity checks */ + for (i = 0; i < SPX5_PRIOS; ++i) { + /* Priority map is *always* reverse e.g: 7 6 5 .. 0 */ + if (params->priomap[i] != (7 - i)) + return -EOPNOTSUPP; + /* Throw an error if we receive zero weights by tc */ + if (params->quanta[i] && params->weights[i] == 0) { + pr_err("Invalid ets configuration; band %d has weight zero", + i); + return -EINVAL; + } + } + + return sparx5_tc_ets_add(port, params); + case TC_ETS_DESTROY: + + return sparx5_tc_ets_del(port); + case TC_ETS_GRAFT: + return -EOPNOTSUPP; + + default: + return -EOPNOTSUPP; + } + + return -EOPNOTSUPP; +} + +int sparx5_port_setup_tc(struct net_device *ndev, enum tc_setup_type type, + void *type_data) +{ + switch (type) { + case TC_SETUP_QDISC_MQPRIO: + return sparx5_tc_setup_qdisc_mqprio(ndev, type_data); + case TC_SETUP_QDISC_TBF: + return sparx5_tc_setup_qdisc_tbf(ndev, type_data); + case TC_SETUP_QDISC_ETS: + return sparx5_tc_setup_qdisc_ets(ndev, type_data); + default: + return -EOPNOTSUPP; + } + + return 0; +} -- cgit v1.2.3