1 // SPDX-License-Identifier: GPL-2.0 2 /* Texas Instruments ICSSG Ethernet driver 3 * 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 0xA0 13 #define ICSSG_TX_BYTE_OFFSET 0xEC 14 #define ICSSG_FW_STATS_BASE 0x0248 15 16 static u32 stats_base[] = { 0x54c, /* Slice 0 stats start */ 17 0xb18, /* Slice 1 stats start */ 18 }; 19 20 void 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 for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) { 46 reg = ICSSG_FW_STATS_BASE + icssg_all_pa_stats[i].offset * 47 PRUETH_NUM_MACS + slice * sizeof(u32); 48 regmap_read(prueth->pa_stats, reg, &val); 49 emac->pa_stats[i] += val; 50 } 51 } 52 53 void icssg_stats_work_handler(struct work_struct *work) 54 { 55 struct prueth_emac *emac = container_of(work, struct prueth_emac, 56 stats_work.work); 57 emac_update_hardware_stats(emac); 58 59 queue_delayed_work(system_long_wq, &emac->stats_work, 60 msecs_to_jiffies((STATS_TIME_LIMIT_1G_MS * 1000) / emac->speed)); 61 } 62 EXPORT_SYMBOL_GPL(icssg_stats_work_handler); 63 64 int emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name) 65 { 66 int i; 67 68 for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) { 69 if (!strcmp(icssg_all_miig_stats[i].name, stat_name)) 70 return emac->stats[icssg_all_miig_stats[i].offset / sizeof(u32)]; 71 } 72 73 for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) { 74 if (!strcmp(icssg_all_pa_stats[i].name, stat_name)) 75 return emac->pa_stats[icssg_all_pa_stats[i].offset / sizeof(u32)]; 76 } 77 78 netdev_err(emac->ndev, "Invalid stats %s\n", stat_name); 79 return -EINVAL; 80 } 81