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Miller" , Roger Quadros , MD Danish Anwar , Conor Dooley , Krzysztof Kozlowski , Rob Herring , Santosh Shilimkar , Nishanth Menon CC: , , , , , Vignesh Raghavendra Subject: [PATCH net-next v7 2/2] net: ti: icssg-prueth: Add support for PA Stats Date: Thu, 22 Aug 2024 17:56:52 +0530 Message-ID: <20240822122652.1071801-3-danishanwar@ti.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240822122652.1071801-1-danishanwar@ti.com> References: <20240822122652.1071801-1-danishanwar@ti.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-Patchwork-Delegate: kuba@kernel.org Add support for dumping PA stats registers via ethtool. Firmware maintained stats are stored at PA Stats registers. Also modify emac_get_strings() API to use ethtool_puts(). This commit also maintains consistency between miig_stats and pa_stats by - renaming the array icssg_all_stats to icssg_all_miig_stats - renaming the structure icssg_stats to icssg_miig_stats - renaming ICSSG_STATS() to ICSSG_MIIG_STATS() - changing order of stats related data structures and arrays so that data structures of a certain stats type is clubbed together. Signed-off-by: MD Danish Anwar --- drivers/net/ethernet/ti/icssg/icssg_ethtool.c | 19 ++- drivers/net/ethernet/ti/icssg/icssg_prueth.c | 6 + drivers/net/ethernet/ti/icssg/icssg_prueth.h | 9 +- drivers/net/ethernet/ti/icssg/icssg_stats.c | 31 +++- drivers/net/ethernet/ti/icssg/icssg_stats.h | 158 +++++++++++------- 5 files changed, 140 insertions(+), 83 deletions(-) diff --git a/drivers/net/ethernet/ti/icssg/icssg_ethtool.c b/drivers/net/ethernet/ti/icssg/icssg_ethtool.c index 5688f054cec5..5073ec195854 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_ethtool.c +++ b/drivers/net/ethernet/ti/icssg/icssg_ethtool.c @@ -83,13 +83,11 @@ static void emac_get_strings(struct net_device *ndev, u32 stringset, u8 *data) switch (stringset) { case ETH_SS_STATS: - for (i = 0; i < ARRAY_SIZE(icssg_all_stats); i++) { - if (!icssg_all_stats[i].standard_stats) { - memcpy(p, icssg_all_stats[i].name, - ETH_GSTRING_LEN); - p += ETH_GSTRING_LEN; - } - } + for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) + if (!icssg_all_miig_stats[i].standard_stats) + ethtool_puts(&p, icssg_all_miig_stats[i].name); + for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) + ethtool_puts(&p, icssg_all_pa_stats[i].name); break; default: break; @@ -104,9 +102,12 @@ static void emac_get_ethtool_stats(struct net_device *ndev, emac_update_hardware_stats(emac); - for (i = 0; i < ARRAY_SIZE(icssg_all_stats); i++) - if (!icssg_all_stats[i].standard_stats) + for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) + if (!icssg_all_miig_stats[i].standard_stats) *(data++) = emac->stats[i]; + + for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) + *(data++) = emac->pa_stats[i]; } static int emac_get_ts_info(struct net_device *ndev, diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c index 53a3e44b99a2..f623a0f603fc 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c @@ -1182,6 +1182,12 @@ static int prueth_probe(struct platform_device *pdev) return -ENODEV; } + prueth->pa_stats = syscon_regmap_lookup_by_phandle(np, "ti,pa-stats"); + if (IS_ERR(prueth->pa_stats)) { + dev_err(dev, "couldn't get ti,pa-stats syscon regmap\n"); + return -ENODEV; + } + if (eth0_node) { ret = prueth_get_cores(prueth, ICSS_SLICE0, false); if (ret) diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h index f678d656a3ed..786bd1ba34ab 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h @@ -50,8 +50,10 @@ #define ICSSG_MAX_RFLOWS 8 /* per slice */ +#define ICSSG_NUM_PA_STATS 4 +#define ICSSG_NUM_MIIG_STATS 60 /* Number of ICSSG related stats */ -#define ICSSG_NUM_STATS 60 +#define ICSSG_NUM_STATS (ICSSG_NUM_MIIG_STATS + ICSSG_NUM_PA_STATS) #define ICSSG_NUM_STANDARD_STATS 31 #define ICSSG_NUM_ETHTOOL_STATS (ICSSG_NUM_STATS - ICSSG_NUM_STANDARD_STATS) @@ -190,7 +192,8 @@ struct prueth_emac { int port_vlan; struct delayed_work stats_work; - u64 stats[ICSSG_NUM_STATS]; + u64 stats[ICSSG_NUM_MIIG_STATS]; + u64 pa_stats[ICSSG_NUM_PA_STATS]; /* RX IRQ Coalescing Related */ struct hrtimer rx_hrtimer; @@ -230,6 +233,7 @@ struct icssg_firmwares { * @registered_netdevs: list of registered netdevs * @miig_rt: regmap to mii_g_rt block * @mii_rt: regmap to mii_rt block + * @pa_stats: regmap to pa_stats block * @pru_id: ID for each of the PRUs * @pdev: pointer to ICSSG platform device * @pdata: pointer to platform data for ICSSG driver @@ -263,6 +267,7 @@ struct prueth { struct net_device *registered_netdevs[PRUETH_NUM_MACS]; struct regmap *miig_rt; struct regmap *mii_rt; + struct regmap *pa_stats; enum pruss_pru_id pru_id[PRUSS_NUM_PRUS]; struct platform_device *pdev; diff --git a/drivers/net/ethernet/ti/icssg/icssg_stats.c b/drivers/net/ethernet/ti/icssg/icssg_stats.c index 2fb150c13078..06a15c0b2acc 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_stats.c +++ b/drivers/net/ethernet/ti/icssg/icssg_stats.c @@ -11,6 +11,7 @@ #define ICSSG_TX_PACKET_OFFSET 0xA0 #define ICSSG_TX_BYTE_OFFSET 0xEC +#define ICSSG_FW_STATS_BASE 0x0248 static u32 stats_base[] = { 0x54c, /* Slice 0 stats start */ 0xb18, /* Slice 1 stats start */ @@ -22,24 +23,31 @@ void emac_update_hardware_stats(struct prueth_emac *emac) int slice = prueth_emac_slice(emac); u32 base = stats_base[slice]; u32 tx_pkt_cnt = 0; - u32 val; + u32 val, reg; int i; - for (i = 0; i < ARRAY_SIZE(icssg_all_stats); i++) { + for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) { regmap_read(prueth->miig_rt, - base + icssg_all_stats[i].offset, + base + icssg_all_miig_stats[i].offset, &val); regmap_write(prueth->miig_rt, - base + icssg_all_stats[i].offset, + base + icssg_all_miig_stats[i].offset, val); - if (icssg_all_stats[i].offset == ICSSG_TX_PACKET_OFFSET) + if (icssg_all_miig_stats[i].offset == ICSSG_TX_PACKET_OFFSET) tx_pkt_cnt = val; emac->stats[i] += val; - if (icssg_all_stats[i].offset == ICSSG_TX_BYTE_OFFSET) + if (icssg_all_miig_stats[i].offset == ICSSG_TX_BYTE_OFFSET) emac->stats[i] -= tx_pkt_cnt * 8; } + + for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) { + reg = ICSSG_FW_STATS_BASE + icssg_all_pa_stats[i].offset * + PRUETH_NUM_MACS + slice * sizeof(u32); + regmap_read(prueth->pa_stats, reg, &val); + emac->pa_stats[i] += val; + } } void icssg_stats_work_handler(struct work_struct *work) @@ -57,9 +65,14 @@ int emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name) { int i; - for (i = 0; i < ARRAY_SIZE(icssg_all_stats); i++) { - if (!strcmp(icssg_all_stats[i].name, stat_name)) - return emac->stats[icssg_all_stats[i].offset / sizeof(u32)]; + for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) { + if (!strcmp(icssg_all_miig_stats[i].name, stat_name)) + return emac->stats[icssg_all_miig_stats[i].offset / sizeof(u32)]; + } + + for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) { + if (!strcmp(icssg_all_pa_stats[i].name, stat_name)) + return emac->pa_stats[icssg_all_pa_stats[i].offset / sizeof(u32)]; } netdev_err(emac->ndev, "Invalid stats %s\n", stat_name); diff --git a/drivers/net/ethernet/ti/icssg/icssg_stats.h b/drivers/net/ethernet/ti/icssg/icssg_stats.h index 999a4a91276c..e88b919f532c 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_stats.h +++ b/drivers/net/ethernet/ti/icssg/icssg_stats.h @@ -77,82 +77,114 @@ struct miig_stats_regs { u32 tx_bytes; }; -#define ICSSG_STATS(field, stats_type) \ +#define ICSSG_MIIG_STATS(field, stats_type) \ { \ #field, \ offsetof(struct miig_stats_regs, field), \ stats_type \ } -struct icssg_stats { +struct icssg_miig_stats { char name[ETH_GSTRING_LEN]; u32 offset; bool standard_stats; }; -static const struct icssg_stats icssg_all_stats[] = { +static const struct icssg_miig_stats icssg_all_miig_stats[] = { /* Rx */ - ICSSG_STATS(rx_packets, true), - ICSSG_STATS(rx_broadcast_frames, false), - ICSSG_STATS(rx_multicast_frames, true), - ICSSG_STATS(rx_crc_errors, true), - ICSSG_STATS(rx_mii_error_frames, false), - ICSSG_STATS(rx_odd_nibble_frames, false), - ICSSG_STATS(rx_frame_max_size, true), - ICSSG_STATS(rx_max_size_error_frames, false), - ICSSG_STATS(rx_frame_min_size, true), - ICSSG_STATS(rx_min_size_error_frames, false), - ICSSG_STATS(rx_over_errors, true), - ICSSG_STATS(rx_class0_hits, false), - ICSSG_STATS(rx_class1_hits, false), - ICSSG_STATS(rx_class2_hits, false), - ICSSG_STATS(rx_class3_hits, false), - ICSSG_STATS(rx_class4_hits, false), - ICSSG_STATS(rx_class5_hits, false), - ICSSG_STATS(rx_class6_hits, false), - ICSSG_STATS(rx_class7_hits, false), - ICSSG_STATS(rx_class8_hits, false), - ICSSG_STATS(rx_class9_hits, false), - ICSSG_STATS(rx_class10_hits, false), - ICSSG_STATS(rx_class11_hits, false), - ICSSG_STATS(rx_class12_hits, false), - ICSSG_STATS(rx_class13_hits, false), - ICSSG_STATS(rx_class14_hits, false), - ICSSG_STATS(rx_class15_hits, false), - ICSSG_STATS(rx_smd_frags, false), - ICSSG_STATS(rx_bucket1_size, true), - ICSSG_STATS(rx_bucket2_size, true), - ICSSG_STATS(rx_bucket3_size, true), - ICSSG_STATS(rx_bucket4_size, true), - ICSSG_STATS(rx_64B_frames, true), - ICSSG_STATS(rx_bucket1_frames, true), - ICSSG_STATS(rx_bucket2_frames, true), - ICSSG_STATS(rx_bucket3_frames, true), - ICSSG_STATS(rx_bucket4_frames, true), - ICSSG_STATS(rx_bucket5_frames, true), - ICSSG_STATS(rx_bytes, true), - ICSSG_STATS(rx_tx_total_bytes, false), + ICSSG_MIIG_STATS(rx_packets, true), + ICSSG_MIIG_STATS(rx_broadcast_frames, false), + ICSSG_MIIG_STATS(rx_multicast_frames, true), + ICSSG_MIIG_STATS(rx_crc_errors, true), + ICSSG_MIIG_STATS(rx_mii_error_frames, false), + ICSSG_MIIG_STATS(rx_odd_nibble_frames, false), + ICSSG_MIIG_STATS(rx_frame_max_size, true), + ICSSG_MIIG_STATS(rx_max_size_error_frames, false), + ICSSG_MIIG_STATS(rx_frame_min_size, true), + ICSSG_MIIG_STATS(rx_min_size_error_frames, false), + ICSSG_MIIG_STATS(rx_over_errors, true), + ICSSG_MIIG_STATS(rx_class0_hits, false), + ICSSG_MIIG_STATS(rx_class1_hits, false), + ICSSG_MIIG_STATS(rx_class2_hits, false), + ICSSG_MIIG_STATS(rx_class3_hits, false), + ICSSG_MIIG_STATS(rx_class4_hits, false), + ICSSG_MIIG_STATS(rx_class5_hits, false), + ICSSG_MIIG_STATS(rx_class6_hits, false), + ICSSG_MIIG_STATS(rx_class7_hits, false), + ICSSG_MIIG_STATS(rx_class8_hits, false), + ICSSG_MIIG_STATS(rx_class9_hits, false), + ICSSG_MIIG_STATS(rx_class10_hits, false), + ICSSG_MIIG_STATS(rx_class11_hits, false), + ICSSG_MIIG_STATS(rx_class12_hits, false), + ICSSG_MIIG_STATS(rx_class13_hits, false), + ICSSG_MIIG_STATS(rx_class14_hits, false), + ICSSG_MIIG_STATS(rx_class15_hits, false), + ICSSG_MIIG_STATS(rx_smd_frags, false), + ICSSG_MIIG_STATS(rx_bucket1_size, true), + ICSSG_MIIG_STATS(rx_bucket2_size, true), + ICSSG_MIIG_STATS(rx_bucket3_size, true), + ICSSG_MIIG_STATS(rx_bucket4_size, true), + ICSSG_MIIG_STATS(rx_64B_frames, true), + ICSSG_MIIG_STATS(rx_bucket1_frames, true), + ICSSG_MIIG_STATS(rx_bucket2_frames, true), + ICSSG_MIIG_STATS(rx_bucket3_frames, true), + ICSSG_MIIG_STATS(rx_bucket4_frames, true), + ICSSG_MIIG_STATS(rx_bucket5_frames, true), + ICSSG_MIIG_STATS(rx_bytes, true), + ICSSG_MIIG_STATS(rx_tx_total_bytes, false), /* Tx */ - ICSSG_STATS(tx_packets, true), - ICSSG_STATS(tx_broadcast_frames, false), - ICSSG_STATS(tx_multicast_frames, false), - ICSSG_STATS(tx_odd_nibble_frames, false), - ICSSG_STATS(tx_underflow_errors, false), - ICSSG_STATS(tx_frame_max_size, true), - ICSSG_STATS(tx_max_size_error_frames, false), - ICSSG_STATS(tx_frame_min_size, true), - ICSSG_STATS(tx_min_size_error_frames, false), - ICSSG_STATS(tx_bucket1_size, true), - ICSSG_STATS(tx_bucket2_size, true), - ICSSG_STATS(tx_bucket3_size, true), - ICSSG_STATS(tx_bucket4_size, true), - ICSSG_STATS(tx_64B_frames, true), - ICSSG_STATS(tx_bucket1_frames, true), - ICSSG_STATS(tx_bucket2_frames, true), - ICSSG_STATS(tx_bucket3_frames, true), - ICSSG_STATS(tx_bucket4_frames, true), - ICSSG_STATS(tx_bucket5_frames, true), - ICSSG_STATS(tx_bytes, true), + ICSSG_MIIG_STATS(tx_packets, true), + ICSSG_MIIG_STATS(tx_broadcast_frames, false), + ICSSG_MIIG_STATS(tx_multicast_frames, false), + ICSSG_MIIG_STATS(tx_odd_nibble_frames, false), + ICSSG_MIIG_STATS(tx_underflow_errors, false), + ICSSG_MIIG_STATS(tx_frame_max_size, true), + ICSSG_MIIG_STATS(tx_max_size_error_frames, false), + ICSSG_MIIG_STATS(tx_frame_min_size, true), + ICSSG_MIIG_STATS(tx_min_size_error_frames, false), + ICSSG_MIIG_STATS(tx_bucket1_size, true), + ICSSG_MIIG_STATS(tx_bucket2_size, true), + ICSSG_MIIG_STATS(tx_bucket3_size, true), + ICSSG_MIIG_STATS(tx_bucket4_size, true), + ICSSG_MIIG_STATS(tx_64B_frames, true), + ICSSG_MIIG_STATS(tx_bucket1_frames, true), + ICSSG_MIIG_STATS(tx_bucket2_frames, true), + ICSSG_MIIG_STATS(tx_bucket3_frames, true), + ICSSG_MIIG_STATS(tx_bucket4_frames, true), + ICSSG_MIIG_STATS(tx_bucket5_frames, true), + ICSSG_MIIG_STATS(tx_bytes, true), +}; + +/** + * struct pa_stats_regs - ICSSG Firmware maintained PA Stats register + * @fw_rx_cnt: Number of valid packets sent by Rx PRU to Host on PSI + * @fw_tx_cnt: Number of valid packets copied by RTU0 to Tx queues + * @fw_tx_pre_overflow: Host Egress Q (Pre-emptible) Overflow Counter + * @fw_tx_exp_overflow: Host Egress Q (Express) Overflow Counter + */ +struct pa_stats_regs { + u32 fw_rx_cnt; + u32 fw_tx_cnt; + u32 fw_tx_pre_overflow; + u32 fw_tx_exp_overflow; +}; + +#define ICSSG_PA_STATS(field) \ +{ \ + #field, \ + offsetof(struct pa_stats_regs, field), \ +} + +struct icssg_pa_stats { + char name[ETH_GSTRING_LEN]; + u32 offset; +}; + +static const struct icssg_pa_stats icssg_all_pa_stats[] = { + ICSSG_PA_STATS(fw_rx_cnt), + ICSSG_PA_STATS(fw_tx_cnt), + ICSSG_PA_STATS(fw_tx_pre_overflow), + ICSSG_PA_STATS(fw_tx_exp_overflow), }; #endif /* __NET_TI_ICSSG_STATS_H */