86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#include "lan966x_main.h"
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int lan966x_tbf_add(struct lan966x_port *port,
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struct tc_tbf_qopt_offload *qopt)
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{
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struct lan966x *lan966x = port->lan966x;
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bool root = qopt->parent == TC_H_ROOT;
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u32 queue = 0;
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u32 cir, cbs;
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u32 se_idx;
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if (!root) {
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queue = TC_H_MIN(qopt->parent) - 1;
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if (queue >= NUM_PRIO_QUEUES)
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return -EOPNOTSUPP;
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}
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if (root)
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se_idx = SE_IDX_PORT + port->chip_port;
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else
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se_idx = SE_IDX_QUEUE + port->chip_port * NUM_PRIO_QUEUES + queue;
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cir = div_u64(qopt->replace_params.rate.rate_bytes_ps, 1000) * 8;
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cbs = qopt->replace_params.max_size;
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/* Rate unit is 100 kbps */
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cir = DIV_ROUND_UP(cir, 100);
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/* Avoid using zero rate */
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cir = cir ?: 1;
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/* Burst unit is 4kB */
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cbs = DIV_ROUND_UP(cbs, 4096);
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/* Avoid using zero burst */
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cbs = cbs ?: 1;
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/* Check that actually the result can be written */
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if (cir > GENMASK(15, 0) ||
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cbs > GENMASK(6, 0))
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return -EINVAL;
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lan_rmw(QSYS_SE_CFG_SE_AVB_ENA_SET(0) |
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QSYS_SE_CFG_SE_FRM_MODE_SET(1),
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QSYS_SE_CFG_SE_AVB_ENA |
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QSYS_SE_CFG_SE_FRM_MODE,
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lan966x, QSYS_SE_CFG(se_idx));
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lan_wr(QSYS_CIR_CFG_CIR_RATE_SET(cir) |
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QSYS_CIR_CFG_CIR_BURST_SET(cbs),
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lan966x, QSYS_CIR_CFG(se_idx));
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return 0;
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}
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int lan966x_tbf_del(struct lan966x_port *port,
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struct tc_tbf_qopt_offload *qopt)
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{
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struct lan966x *lan966x = port->lan966x;
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bool root = qopt->parent == TC_H_ROOT;
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u32 queue = 0;
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u32 se_idx;
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if (!root) {
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queue = TC_H_MIN(qopt->parent) - 1;
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if (queue >= NUM_PRIO_QUEUES)
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return -EOPNOTSUPP;
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}
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if (root)
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se_idx = SE_IDX_PORT + port->chip_port;
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else
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se_idx = SE_IDX_QUEUE + port->chip_port * NUM_PRIO_QUEUES + queue;
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lan_rmw(QSYS_SE_CFG_SE_AVB_ENA_SET(0) |
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QSYS_SE_CFG_SE_FRM_MODE_SET(0),
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QSYS_SE_CFG_SE_AVB_ENA |
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QSYS_SE_CFG_SE_FRM_MODE,
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lan966x, QSYS_SE_CFG(se_idx));
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lan_wr(QSYS_CIR_CFG_CIR_RATE_SET(0) |
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QSYS_CIR_CFG_CIR_BURST_SET(0),
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lan966x, QSYS_CIR_CFG(se_idx));
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return 0;
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}
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