86 lines · c
1// SPDX-License-Identifier: GPL-2.02/* Texas Instruments ICSSG Ethernet driver3 *4 * Copyright (C) 2018-2021 Texas Instruments Incorporated - https://www.ti.com/5 *6 */7 8#include "icssg_prueth.h"9#include "icssg_stats.h"10#include <linux/regmap.h>11 12#define ICSSG_TX_PACKET_OFFSET 0xA013#define ICSSG_TX_BYTE_OFFSET 0xEC14#define ICSSG_FW_STATS_BASE 0x024815 16static u32 stats_base[] = { 0x54c, /* Slice 0 stats start */17 0xb18, /* Slice 1 stats start */18};19 20void emac_update_hardware_stats(struct prueth_emac *emac)21{22 struct prueth *prueth = emac->prueth;23 int slice = prueth_emac_slice(emac);24 u32 base = stats_base[slice];25 u32 tx_pkt_cnt = 0;26 u32 val, reg;27 int i;28 29 for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) {30 regmap_read(prueth->miig_rt,31 base + icssg_all_miig_stats[i].offset,32 &val);33 regmap_write(prueth->miig_rt,34 base + icssg_all_miig_stats[i].offset,35 val);36 37 if (icssg_all_miig_stats[i].offset == ICSSG_TX_PACKET_OFFSET)38 tx_pkt_cnt = val;39 40 emac->stats[i] += val;41 if (icssg_all_miig_stats[i].offset == ICSSG_TX_BYTE_OFFSET)42 emac->stats[i] -= tx_pkt_cnt * 8;43 }44 45 if (prueth->pa_stats) {46 for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) {47 reg = ICSSG_FW_STATS_BASE +48 icssg_all_pa_stats[i].offset *49 PRUETH_NUM_MACS + slice * sizeof(u32);50 regmap_read(prueth->pa_stats, reg, &val);51 emac->pa_stats[i] += val;52 }53 }54}55 56void icssg_stats_work_handler(struct work_struct *work)57{58 struct prueth_emac *emac = container_of(work, struct prueth_emac,59 stats_work.work);60 emac_update_hardware_stats(emac);61 62 queue_delayed_work(system_long_wq, &emac->stats_work,63 msecs_to_jiffies((STATS_TIME_LIMIT_1G_MS * 1000) / emac->speed));64}65EXPORT_SYMBOL_GPL(icssg_stats_work_handler);66 67int emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name)68{69 int i;70 71 for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) {72 if (!strcmp(icssg_all_miig_stats[i].name, stat_name))73 return emac->stats[icssg_all_miig_stats[i].offset / sizeof(u32)];74 }75 76 if (emac->prueth->pa_stats) {77 for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) {78 if (!strcmp(icssg_all_pa_stats[i].name, stat_name))79 return emac->pa_stats[icssg_all_pa_stats[i].offset / sizeof(u32)];80 }81 }82 83 netdev_err(emac->ndev, "Invalid stats %s\n", stat_name);84 return -EINVAL;85}86