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charset="utf-8" From: MD Danish Anwar Introduce QoS infrastructure for Frame Preemption (FPE) support in the ICSSG Ethernet driver. prueth_qos_iet tracks FPE enable/active state and verify state machine status via firmware-reported enum icssg_ietfpe_verify_states. icssg_config_ietfpe() configures IET FPE in firmware, triggers verify state machine based on ethtool MAC Merge parameters. Polls firmware verify status up to 3 times with verify_time_ms intervals and driver handles timeout by logging error and returning. In case of any failure during configuration for enable/disable, IET FPE falls back to disabled state. For MQPRIO qdisc support all queues are express by default later gets override by user-provided preemptible_tcs bitmask via tc qdisc mask. Preempt mask configuration: Maps traffic classes to queue express/preemptible state and applied only when FPE is active (Tx enabled). Verify state machine re-triggers on link up/down events based on fpe_enabled and fpe_active flags, and for memory protection, fpe_lock serializes all FPE state mutations, preventing races between ethtool config, qdisc setup, and link events Signed-off-by: MD Danish Anwar Signed-off-by: Meghana Malladi --- v8-v7: - icssg_iet_set_preempt_mask(): Reset all Q_MAP entries before applying new TC mapping when fpe_active is true to clear stale preemptible entries from a prior wider TC mapping - icssg_iet_change_preemptible_tcs(): Skip firmware command when FPE is not configured to avoid unnecessary PREMPT_TX_DISABLE on every link-up event - icssg_qos_init(): Remove unnecessary mutex lock/unlock since no concurrent accessor exists before register_netdev() All the above changes address the sashiko review comments drivers/net/ethernet/ti/Makefile | 3 +- drivers/net/ethernet/ti/icssg/icssg_common.c | 1 + drivers/net/ethernet/ti/icssg/icssg_config.h | 9 - drivers/net/ethernet/ti/icssg/icssg_prueth.c | 10 +- drivers/net/ethernet/ti/icssg/icssg_prueth.h | 8 +- drivers/net/ethernet/ti/icssg/icssg_qos.c | 305 +++++++++++++++++++ drivers/net/ethernet/ti/icssg/icssg_qos.h | 68 +++++ 7 files changed, 389 insertions(+), 15 deletions(-) create mode 100644 drivers/net/ethernet/ti/icssg/icssg_qos.c create mode 100644 drivers/net/ethernet/ti/icssg/icssg_qos.h diff --git a/drivers/net/ethernet/ti/Makefile b/drivers/net/ethernet/ti/Mak= efile index f4276c9a77620..d19bcd25c9d07 100644 --- a/drivers/net/ethernet/ti/Makefile +++ b/drivers/net/ethernet/ti/Makefile @@ -46,6 +46,7 @@ icssg-y :=3D icssg/icssg_common.o \ icssg/icssg_config.o \ icssg/icssg_mii_cfg.o \ icssg/icssg_stats.o \ - icssg/icssg_ethtool.o + icssg/icssg_ethtool.o \ + icssg/icssg_qos.o =20 obj-$(CONFIG_TI_ICSS_IEP) +=3D icssg/icss_iep.o diff --git a/drivers/net/ethernet/ti/icssg/icssg_common.c b/drivers/net/eth= ernet/ti/icssg/icssg_common.c index 4a7d1a6f470b1..d59eef61e7012 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_common.c +++ b/drivers/net/ethernet/ti/icssg/icssg_common.c @@ -1754,6 +1754,7 @@ void prueth_netdev_exit(struct prueth *prueth, =20 netif_napi_del(&emac->napi_rx); =20 + mutex_destroy(&emac->qos.iet.fpe_lock); pruss_release_mem_region(prueth->pruss, &emac->dram); free_netdev(emac->ndev); prueth->emac[mac] =3D NULL; diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.h b/drivers/net/eth= ernet/ti/icssg/icssg_config.h index 60d69744ffae2..1ac202f855ed4 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_config.h +++ b/drivers/net/ethernet/ti/icssg/icssg_config.h @@ -323,13 +323,4 @@ struct prueth_fdb_slot { u8 fid; u8 fid_c2; } __packed; - -enum icssg_ietfpe_verify_states { - ICSSG_IETFPE_STATE_UNKNOWN =3D 0, - ICSSG_IETFPE_STATE_INITIAL, - ICSSG_IETFPE_STATE_VERIFYING, - ICSSG_IETFPE_STATE_SUCCEEDED, - ICSSG_IETFPE_STATE_FAILED, - ICSSG_IETFPE_STATE_DISABLED -}; #endif /* __NET_TI_ICSSG_CONFIG_H */ diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/eth= ernet/ti/icssg/icssg_prueth.c index 591be5c8056b4..283be27a240e9 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c @@ -357,11 +357,11 @@ static void emac_adjust_link(struct net_device *ndev) } if (!emac->link) { new_state =3D true; - emac->link =3D 1; + WRITE_ONCE(emac->link, 1); } } else if (emac->link) { new_state =3D true; - emac->link =3D 0; + WRITE_ONCE(emac->link, 0); =20 /* f/w should support 100 & 1000 */ emac->speed =3D SPEED_1000; @@ -392,6 +392,8 @@ static void emac_adjust_link(struct net_device *ndev) } else { icssg_set_port_state(emac, ICSSG_EMAC_PORT_DISABLE); } + + icssg_qos_link_state_update(ndev); } =20 if (emac->link) { @@ -1652,6 +1654,7 @@ static const struct net_device_ops emac_netdev_ops = =3D { .ndo_hwtstamp_get =3D icssg_ndo_get_ts_config, .ndo_hwtstamp_set =3D icssg_ndo_set_ts_config, .ndo_xsk_wakeup =3D prueth_xsk_wakeup, + .ndo_setup_tc =3D icssg_qos_ndo_setup_tc, }; =20 static int prueth_netdev_init(struct prueth *prueth, @@ -1686,6 +1689,8 @@ static int prueth_netdev_init(struct prueth *prueth, =20 INIT_DELAYED_WORK(&emac->stats_work, icssg_stats_work_handler); =20 + icssg_qos_init(ndev); + ret =3D pruss_request_mem_region(prueth->pruss, port =3D=3D PRUETH_PORT_MII0 ? PRUSS_MEM_DRAM0 : PRUSS_MEM_DRAM1, @@ -1793,6 +1798,7 @@ static int prueth_netdev_init(struct prueth *prueth, free: pruss_release_mem_region(prueth->pruss, &emac->dram); free_ndev: + mutex_destroy(&emac->qos.iet.fpe_lock); emac->ndev =3D NULL; prueth->emac[mac] =3D NULL; free_netdev(ndev); diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/eth= ernet/ti/icssg/icssg_prueth.h index df93d15c5b786..f73b8f5fca956 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h @@ -44,10 +44,11 @@ #include "icssg_config.h" #include "icss_iep.h" #include "icssg_switch_map.h" +#include "icssg_qos.h" =20 -#define PRUETH_MAX_MTU (2000 - ETH_HLEN - ETH_FCS_LEN) -#define PRUETH_MIN_PKT_SIZE (VLAN_ETH_ZLEN) -#define PRUETH_MAX_PKT_SIZE (PRUETH_MAX_MTU + ETH_HLEN + ETH_FCS_LEN) +#define PRUETH_MAX_MTU (2000 - ETH_HLEN - ETH_FCS_LEN) +#define PRUETH_MIN_PKT_SIZE (VLAN_ETH_ZLEN) +#define PRUETH_MAX_PKT_SIZE (PRUETH_MAX_MTU + ETH_HLEN + ETH_FCS_LEN) =20 #define ICSS_SLICE0 0 #define ICSS_SLICE1 1 @@ -254,6 +255,7 @@ struct prueth_emac { struct bpf_prog *xdp_prog; struct xdp_attachment_info xdpi; int xsk_qid; + struct prueth_qos qos; }; =20 /* The buf includes headroom compatible with both skb and xdpf */ diff --git a/drivers/net/ethernet/ti/icssg/icssg_qos.c b/drivers/net/ethern= et/ti/icssg/icssg_qos.c new file mode 100644 index 0000000000000..27a953d981538 --- /dev/null +++ b/drivers/net/ethernet/ti/icssg/icssg_qos.c @@ -0,0 +1,305 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Texas Instruments ICSSG PRUETH QoS submodule + * Copyright (C) 2023 Texas Instruments Incorporated - http://www.ti.com/ + */ + +#include "icssg_prueth.h" +#include "icssg_switch_map.h" + +static void icssg_iet_set_preempt_mask(struct prueth_emac *emac) +{ + void __iomem *config =3D emac->dram.va + ICSSG_CONFIG_OFFSET; + struct prueth_qos_mqprio *p_mqprio =3D &emac->qos.mqprio; + struct tc_mqprio_qopt *qopt =3D &p_mqprio->qopt; + struct prueth_qos_iet *iet =3D &emac->qos.iet; + int prempt_mask =3D 0, i; + u8 tc, num_tc; + + if (!iet->preemptible_tcs) + goto reset_hw; + + if (iet->fpe_active) { + /* Reset all Q_MAP entries first to clear any stale preemptible + * entries from a prior wider TC mapping. + */ + for (i =3D 0; i < ICSSG_MAX_TC_QUEUES; i++) + writeb(0, config + EXPRESS_PRE_EMPTIVE_Q_MAP + i); + + /* Configure queues for user requested preemptible tc map */ + num_tc =3D p_mqprio->qopt.num_tc; + for (tc =3D 0; tc < num_tc; tc++) { + /* check if the tc is preemptive or not */ + if (iet->preemptible_tcs & BIT(tc)) { + /* Set the queues as preemptive queues */ + for (i =3D qopt->offset[tc]; i < qopt->offset[tc] + qopt->count[tc]; i= ++) { + writeb(BIT(4), + config + EXPRESS_PRE_EMPTIVE_Q_MAP + i); + } + } else { + /* Accumulate express queue bits for the mask */ + for (i =3D qopt->offset[tc]; i < qopt->offset[tc] + qopt->count[tc]; i= ++) + prempt_mask |=3D BIT(i); + } + } + writeb(prempt_mask, config + EXPRESS_PRE_EMPTIVE_Q_MASK); + return; + } + +reset_hw: + /* Reset to default: all queues as express */ + for (i =3D 0; i < ICSSG_MAX_TC_QUEUES; i++) + writeb(0, config + EXPRESS_PRE_EMPTIVE_Q_MAP + i); + writeb(ICSSG_EXPRESS_Q_MASK_ALL, config + EXPRESS_PRE_EMPTIVE_Q_MASK); +} + +static int icssg_iet_verify_wait(struct prueth_emac *emac) +{ + void __iomem *config =3D emac->dram.va + ICSSG_CONFIG_OFFSET; + struct prueth_qos_iet *iet =3D &emac->qos.iet; + unsigned long delay_us, timeout_us; + u32 status; + int ret; + + delay_us =3D iet->verify_time_ms * 1000; + timeout_us =3D delay_us * ICSSG_IET_VERIFY_ATTEMPTS; + + ret =3D readb_poll_timeout(config + PRE_EMPTION_VERIFY_STATUS, + status, + status =3D=3D ICSSG_IETFPE_STATE_SUCCEEDED || + status =3D=3D ICSSG_IETFPE_STATE_FAILED, + delay_us, + timeout_us); + + iet->verify_status =3D status; + if (!ret && status =3D=3D ICSSG_IETFPE_STATE_FAILED) + return -EIO; + return ret; +} + +/* Direct synchronous configuration of IET FPE. + * Caller must hold iet->fpe_lock. + */ +int icssg_config_ietfpe(struct net_device *ndev, bool enable) +{ + struct prueth_emac *emac =3D netdev_priv(ndev); + void __iomem *config =3D emac->dram.va + ICSSG_CONFIG_OFFSET; + struct prueth_qos_iet *iet =3D &emac->qos.iet; + int ret; + u8 val; + + lockdep_assert_held(&iet->fpe_lock); + + if (!READ_ONCE(emac->link)) { + netdev_dbg(ndev, "cannot change IET/FPE state when interface is down\n"); + return 0; + } + + /* Update FPE Tx enable bit (PRE_EMPTION_ENABLE_TX) if + * fpe_enabled is set to enable MM in Tx direction + */ + writeb(enable ? 1 : 0, config + PRE_EMPTION_ENABLE_TX); + writew(iet->tx_min_frag_size + ETH_FCS_LEN, + config + PRE_EMPTION_ADD_FRAG_SIZE_LOCAL); + + /* If FPE is to be enabled, first configure MAC Verify state + * machine in firmware as firmware kicks the Verify process + * as soon as ICSSG_EMAC_PORT_PREMPT_TX_ENABLE command is + * received. + */ + if (enable && iet->mac_verify_configure) { + writeb(1, config + PRE_EMPTION_ENABLE_VERIFY); + writel(iet->verify_time_ms, config + PRE_EMPTION_VERIFY_TIME); + } else { + writeb(0, config + PRE_EMPTION_ENABLE_VERIFY); + iet->verify_status =3D ICSSG_IETFPE_STATE_DISABLED; + } + + /* Send command to enable FPE Tx side. Rx is always enabled */ + ret =3D icssg_set_port_state(emac, + enable ? ICSSG_EMAC_PORT_PREMPT_TX_ENABLE : + ICSSG_EMAC_PORT_PREMPT_TX_DISABLE); + if (ret) { + netdev_err(ndev, "TX preempt %s command failed\n", + str_enable_disable(enable)); + goto fallback; + } + + if (enable && iet->mac_verify_configure) { + ret =3D icssg_iet_verify_wait(emac); + if (ret) { + netdev_err(ndev, "MAC Merge verification failed: %s\n", + iet->verify_status =3D=3D ICSSG_IETFPE_STATE_FAILED ? + "link partner rejected" : "timeout"); + goto disable_tx; + } + } else if (enable) { + /* Give firmware some time to update + * PRE_EMPTION_ACTIVE_TX state + */ + usleep_range(100, 200); + } + + if (enable) { + val =3D readb(config + PRE_EMPTION_ACTIVE_TX); + if (val !=3D 1) { + netdev_err(ndev, + "Firmware fails to activate IET/FPE\n"); + ret =3D -EIO; + goto disable_tx; + } + iet->fpe_active =3D true; + } else { + iet->fpe_active =3D false; + } + + icssg_iet_set_preempt_mask(emac); + netdev_dbg(ndev, "IET FPE %s successfully\n", + str_enable_disable(enable)); + return 0; + +disable_tx: + icssg_set_port_state(emac, ICSSG_EMAC_PORT_PREMPT_TX_DISABLE); +fallback: + writeb(0, config + PRE_EMPTION_ENABLE_TX); + writeb(0, config + PRE_EMPTION_ENABLE_VERIFY); + iet->verify_status =3D ICSSG_IETFPE_STATE_DISABLED; + iet->fpe_active =3D false; + icssg_iet_set_preempt_mask(emac); + return ret; +} + +void icssg_qos_init(struct net_device *ndev) +{ + struct prueth_emac *emac =3D netdev_priv(ndev); + struct prueth_qos_iet *iet =3D &emac->qos.iet; + + mutex_init(&iet->fpe_lock); + /* Set default values to prevent garbage values during .get_mm() */ + iet->verify_time_ms =3D ICSSG_IET_MAX_VERIFY_TIME; + iet->tx_min_frag_size =3D ETH_ZLEN; +} +EXPORT_SYMBOL_GPL(icssg_qos_init); + +static int icssg_iet_change_preemptible_tcs(struct prueth_emac *emac) +{ + struct prueth_qos_iet *iet =3D &emac->qos.iet; + int ret; + + mutex_lock(&iet->fpe_lock); + if (!iet->fpe_enabled && !iet->preemptible_tcs) { + mutex_unlock(&iet->fpe_lock); + return 0; + } + ret =3D icssg_config_ietfpe(emac->ndev, iet->fpe_enabled); + mutex_unlock(&iet->fpe_lock); + + return ret; +} + +static int emac_tc_query_caps(struct net_device *ndev, void *type_data) +{ + struct tc_query_caps_base *base =3D type_data; + + switch (base->type) { + case TC_SETUP_QDISC_MQPRIO: { + struct tc_mqprio_caps *caps =3D base->caps; + + caps->validate_queue_counts =3D true; + return 0; + } + default: + return -EOPNOTSUPP; + } +} + +static int emac_tc_setup_mqprio(struct net_device *ndev, void *type_data) +{ + struct prueth_emac *emac =3D netdev_priv(ndev); + struct prueth_qos_mqprio *p_mqprio =3D &emac->qos.mqprio; + struct tc_mqprio_qopt_offload *mqprio =3D type_data; + struct prueth_qos_iet *iet =3D &emac->qos.iet; + struct tc_mqprio_qopt *qopt =3D &mqprio->qopt; + int tc, offset, count; + + /* Validate parameters */ + if (qopt->num_tc > ICSSG_MAX_TC_QUEUES) { + netdev_err(ndev, "Number of traffic classes (%u) exceeds hardware limit\= n", + qopt->num_tc); + return -EOPNOTSUPP; + } + + if (mqprio->flags & TC_MQPRIO_F_SHAPER) { + netdev_err(ndev, "traffic shaping is not supported\n"); + return -EOPNOTSUPP; + } + + if (mqprio->flags & (TC_MQPRIO_F_MIN_RATE | TC_MQPRIO_F_MAX_RATE)) { + netdev_err(ndev, "per-queue rate limiting is not supported\n"); + return -EOPNOTSUPP; + } + + if (!qopt->num_tc) { + netdev_reset_tc(ndev); + } else { + netdev_set_num_tc(ndev, qopt->num_tc); + + for (tc =3D 0; tc < qopt->num_tc; tc++) { + count =3D qopt->count[tc]; + offset =3D qopt->offset[tc]; + netdev_set_tc_queue(ndev, tc, count, offset); + } + } + + mutex_lock(&iet->fpe_lock); + if (!qopt->num_tc) { + iet->preemptible_tcs =3D 0; + } else { + memcpy(&p_mqprio->qopt, qopt, sizeof(*qopt)); + iet->preemptible_tcs =3D mqprio->preemptible_tcs; + } + mutex_unlock(&iet->fpe_lock); + + netdev_dbg(ndev, "dev->num_tc %u dev->real_num_tx_queues %u\n", + ndev->num_tc, ndev->real_num_tx_queues); + + return icssg_iet_change_preemptible_tcs(emac); +} + +int icssg_qos_ndo_setup_tc(struct net_device *ndev, enum tc_setup_type typ= e, + void *type_data) +{ + switch (type) { + case TC_QUERY_CAPS: + return emac_tc_query_caps(ndev, type_data); + case TC_SETUP_QDISC_MQPRIO: + return emac_tc_setup_mqprio(ndev, type_data); + default: + return -EOPNOTSUPP; + } +} +EXPORT_SYMBOL_GPL(icssg_qos_ndo_setup_tc); + +void icssg_qos_link_state_update(struct net_device *ndev) +{ + struct prueth_emac *emac =3D netdev_priv(ndev); + struct prueth_qos_iet *iet =3D &emac->qos.iet; + int ret; + + if (!READ_ONCE(emac->link)) { + /* Clear FPE active state on link-down so get_mm() reports + * accurate tx_active and verify_status while link is down. + */ + mutex_lock(&iet->fpe_lock); + iet->fpe_active =3D false; + iet->verify_status =3D ICSSG_IETFPE_STATE_DISABLED; + icssg_iet_set_preempt_mask(emac); + mutex_unlock(&iet->fpe_lock); + return; + } + + ret =3D icssg_iet_change_preemptible_tcs(emac); + if (ret) + netdev_dbg(ndev, "IET FPE %s failed\n", + str_enable_disable(iet->fpe_enabled)); +} +EXPORT_SYMBOL_GPL(icssg_qos_link_state_update); diff --git a/drivers/net/ethernet/ti/icssg/icssg_qos.h b/drivers/net/ethern= et/ti/icssg/icssg_qos.h new file mode 100644 index 0000000000000..e826ce4bcfd96 --- /dev/null +++ b/drivers/net/ethernet/ti/icssg/icssg_qos.h @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2023 Texas Instruments Incorporated - http://www.ti.com/ + */ + +#ifndef __NET_TI_ICSSG_QOS_H +#define __NET_TI_ICSSG_QOS_H + +#include +#include +#include + +#define ICSSG_MAX_TC_QUEUES 8 +#define ICSSG_EXPRESS_Q_MASK_ALL 0xFF +#define ICSSG_IET_MAX_VERIFY_TIME 128 +#define ICSSG_IET_MIN_VERIFY_TIME 1 +#define ICSSG_IET_VERIFY_ATTEMPTS 3 + +/** + * enum icssg_ietfpe_verify_states - status of MM Verify returned by firmw= are + * @ICSSG_IETFPE_STATE_UNKNOWN: + * verification status is unknown + * @ICSSG_IETFPE_STATE_INITIAL: + * Firmware returns this if verify state diagram is idle + * @ICSSG_IETFPE_STATE_VERIFYING: + * Firmware returns this if verification is ongoing + * @ICSSG_IETFPE_STATE_SUCCEEDED: + * Firmware returns this if verify state diagram completes verification + * @ICSSG_IETFPE_STATE_FAILED: + * Firmware returns this if verify state diagram fails during verification + * @ICSSG_IETFPE_STATE_DISABLED: + * verification is disabled by the driver + */ +enum icssg_ietfpe_verify_states { + ICSSG_IETFPE_STATE_UNKNOWN =3D 0, + ICSSG_IETFPE_STATE_INITIAL, + ICSSG_IETFPE_STATE_VERIFYING, + ICSSG_IETFPE_STATE_SUCCEEDED, + ICSSG_IETFPE_STATE_FAILED, + ICSSG_IETFPE_STATE_DISABLED +}; 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charset="utf-8" From: MD Danish Anwar Add driver support for viewing and changing the MAC Merge sublayer parameters via ethtool ops: .set_mm(), .get_mm() and .get_mm_stats(). The minimum size of non-final mPacket fragments supported by the firmware without leading errors is 64 Bytes (including FCS). Add pa stats registers to check statistics for preemption, which can be dumped using ethtool ops. Fix emac_get_stat_by_name() to return u64 instead of int and return 0 on error instead of -EINVAL. This prevents invalid stat lookups from corrupting output stats with signed error codes cast to u64. Signed-off-by: MD Danish Anwar Signed-off-by: Meghana Malladi --- v8-v7: - Fix the duplicating new entries for emac_get_mm_stats() which already have a standard uAPI - emac_set_mm(): Save and restore all four config fields on icssg_config_ietfpe() failure so get_mm() reports the configuration actually reflected in hardware All the above changes address the sashiko review comments drivers/net/ethernet/ti/icssg/icssg_ethtool.c | 132 +++++++++++++++++- drivers/net/ethernet/ti/icssg/icssg_prueth.h | 13 +- drivers/net/ethernet/ti/icssg/icssg_stats.c | 4 +- drivers/net/ethernet/ti/icssg/icssg_stats.h | 84 ++++++----- .../net/ethernet/ti/icssg/icssg_switch_map.h | 5 + 5 files changed, 191 insertions(+), 47 deletions(-) diff --git a/drivers/net/ethernet/ti/icssg/icssg_ethtool.c b/drivers/net/et= hernet/ti/icssg/icssg_ethtool.c index b715af21d23ac..dc25361afe989 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_ethtool.c +++ b/drivers/net/ethernet/ti/icssg/icssg_ethtool.c @@ -74,7 +74,8 @@ static int emac_get_sset_count(struct net_device *ndev, i= nt stringset) if (emac->prueth->pa_stats) return ICSSG_NUM_ETHTOOL_STATS; else - return ICSSG_NUM_ETHTOOL_STATS - ICSSG_NUM_PA_STATS; + return ICSSG_NUM_ETHTOOL_STATS - + (ICSSG_NUM_PA_STATS - ICSSG_NUM_PA_STANDARD_STATS); default: return -EOPNOTSUPP; } @@ -93,7 +94,8 @@ static void emac_get_strings(struct net_device *ndev, u32= stringset, u8 *data) ethtool_puts(&p, icssg_all_miig_stats[i].name); if (emac->prueth->pa_stats) for (i =3D 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) - ethtool_puts(&p, icssg_all_pa_stats[i].name); + if (!icssg_all_pa_stats[i].standard_stats) + ethtool_puts(&p, icssg_all_pa_stats[i].name); break; default: break; @@ -114,7 +116,8 @@ static void emac_get_ethtool_stats(struct net_device *n= dev, =20 if (emac->prueth->pa_stats) for (i =3D 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) - *(data++) =3D emac->pa_stats[i]; + if (!icssg_all_pa_stats[i].standard_stats) + *(data++) =3D emac->pa_stats[i]; } =20 static int emac_get_ts_info(struct net_device *ndev, @@ -294,6 +297,126 @@ static int emac_set_per_queue_coalesce(struct net_dev= ice *ndev, u32 queue, return 0; } =20 +static int emac_get_mm(struct net_device *ndev, struct ethtool_mm_state *s= tate) +{ + struct prueth_emac *emac =3D netdev_priv(ndev); + struct prueth_qos_iet *iet =3D &emac->qos.iet; + enum icssg_ietfpe_verify_states verify_status; + + if (emac->is_sr1) + return -EOPNOTSUPP; + + mutex_lock(&iet->fpe_lock); + state->tx_enabled =3D iet->fpe_enabled; + state->tx_min_frag_size =3D iet->tx_min_frag_size; + state->verify_enabled =3D iet->mac_verify_configure; + state->verify_time =3D iet->verify_time_ms; + state->tx_active =3D iet->fpe_active; + verify_status =3D iet->verify_status; + mutex_unlock(&iet->fpe_lock); + + state->rx_min_frag_size =3D ETH_ZLEN; + state->pmac_enabled =3D true; + + switch (verify_status) { + case ICSSG_IETFPE_STATE_DISABLED: + state->verify_status =3D ETHTOOL_MM_VERIFY_STATUS_DISABLED; + break; + case ICSSG_IETFPE_STATE_INITIAL: + state->verify_status =3D ETHTOOL_MM_VERIFY_STATUS_INITIAL; + break; + case ICSSG_IETFPE_STATE_VERIFYING: + state->verify_status =3D ETHTOOL_MM_VERIFY_STATUS_VERIFYING; + break; + case ICSSG_IETFPE_STATE_SUCCEEDED: + state->verify_status =3D ETHTOOL_MM_VERIFY_STATUS_SUCCEEDED; + break; + case ICSSG_IETFPE_STATE_FAILED: + state->verify_status =3D ETHTOOL_MM_VERIFY_STATUS_FAILED; + break; + default: + state->verify_status =3D ETHTOOL_MM_VERIFY_STATUS_UNKNOWN; + break; + } + + /* 802.3-2018 clause 30.14.1.6, says that the aMACMergeVerifyTime + * variable has a range between 1 and 128 ms inclusive. Limit to that. + */ + state->max_verify_time =3D ETHTOOL_MM_MAX_VERIFY_TIME_MS; + + return 0; +} + +static int emac_set_mm(struct net_device *ndev, struct ethtool_mm_cfg *cfg, + struct netlink_ext_ack *extack) +{ + struct prueth_emac *emac =3D netdev_priv(ndev); + struct prueth_qos_iet *iet =3D &emac->qos.iet; + u32 old_verify_time_ms, old_tx_min_frag_size; + bool old_fpe_enabled, old_mac_verify_configure; + int err; + + if (emac->is_sr1) + return -EOPNOTSUPP; + + if (!cfg->pmac_enabled) { + NL_SET_ERR_MSG_MOD(extack, "preemptible MAC is always enabled"); + return -EOPNOTSUPP; + } + + mutex_lock(&iet->fpe_lock); + old_verify_time_ms =3D iet->verify_time_ms; + old_tx_min_frag_size =3D iet->tx_min_frag_size; + old_fpe_enabled =3D iet->fpe_enabled; + old_mac_verify_configure =3D iet->mac_verify_configure; + + iet->verify_time_ms =3D cfg->verify_time; + iet->tx_min_frag_size =3D cfg->tx_min_frag_size; + iet->fpe_enabled =3D cfg->tx_enabled; + iet->mac_verify_configure =3D cfg->verify_enabled; + err =3D icssg_config_ietfpe(ndev, cfg->tx_enabled); + if (err) { + /* icssg_config_ietfpe's fallback path already cleared fpe_active. + * Restore all config fields so get_mm() reports the configuration + * that is actually reflected in hardware. + */ + iet->verify_time_ms =3D old_verify_time_ms; + iet->tx_min_frag_size =3D old_tx_min_frag_size; + iet->fpe_enabled =3D old_fpe_enabled; + iet->mac_verify_configure =3D old_mac_verify_configure; + } + mutex_unlock(&iet->fpe_lock); + + return err; +} + +static void emac_get_mm_stats(struct net_device *ndev, + struct ethtool_mm_stats *s) +{ + struct prueth_emac *emac =3D netdev_priv(ndev); + + if (emac->is_sr1) + return; + + if (!emac->prueth->pa_stats) + return; + + emac_update_hardware_stats(emac); + + /* Hold stats_lock to prevent icssg_stats_work_handler from updating + * pa_stats[] between reads, which could yield a torn u64 value on + * 32-bit architectures. + */ + spin_lock(&emac->prueth->stats_lock); + /* MACMergeHoldCount stats is not tracked by the firmware */ + s->MACMergeFrameAssOkCount =3D emac_get_stat_by_name(emac, "FW_PREEMPT_AS= SEMBLY_OK"); + s->MACMergeFrameAssErrorCount =3D emac_get_stat_by_name(emac, "FW_PREEMPT= _ASSEMBLY_ERR"); + s->MACMergeFragCountRx =3D emac_get_stat_by_name(emac, "FW_PREEMPT_FRAG_C= NT_RX"); + s->MACMergeFragCountTx =3D emac_get_stat_by_name(emac, "FW_PREEMPT_FRAG_C= NT_TX"); + s->MACMergeFrameSmdErrorCount =3D emac_get_stat_by_name(emac, "FW_PREEMPT= _BAD_FRAG"); + spin_unlock(&emac->prueth->stats_lock); +} + const struct ethtool_ops icssg_ethtool_ops =3D { .get_drvinfo =3D emac_get_drvinfo, .get_msglevel =3D emac_get_msglevel, @@ -317,5 +440,8 @@ const struct ethtool_ops icssg_ethtool_ops =3D { .set_eee =3D emac_set_eee, .nway_reset =3D emac_nway_reset, .get_rmon_stats =3D emac_get_rmon_stats, + .get_mm =3D emac_get_mm, + .set_mm =3D emac_set_mm, + .get_mm_stats =3D emac_get_mm_stats, }; EXPORT_SYMBOL_GPL(icssg_ethtool_ops); diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/eth= ernet/ti/icssg/icssg_prueth.h index f73b8f5fca956..ad9061408050e 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h @@ -45,6 +45,7 @@ #include "icss_iep.h" #include "icssg_switch_map.h" #include "icssg_qos.h" +#include "icssg_stats.h" =20 #define PRUETH_MAX_MTU (2000 - ETH_HLEN - ETH_FCS_LEN) #define PRUETH_MIN_PKT_SIZE (VLAN_ETH_ZLEN) @@ -58,12 +59,16 @@ =20 #define ICSSG_MAX_RFLOWS 8 /* per slice */ =20 -#define ICSSG_NUM_PA_STATS 32 -#define ICSSG_NUM_MIIG_STATS 60 +#define ICSSG_NUM_PA_STATS ARRAY_SIZE(icssg_all_pa_stats) +#define ICSSG_NUM_MIIG_STATS ARRAY_SIZE(icssg_all_miig_stats) /* Number of ICSSG related stats */ #define ICSSG_NUM_STATS (ICSSG_NUM_MIIG_STATS + ICSSG_NUM_PA_STATS) +/* MIIG stats with standard uAPI equivalents (excluded from ethtool -S) */ #define ICSSG_NUM_STANDARD_STATS 31 -#define ICSSG_NUM_ETHTOOL_STATS (ICSSG_NUM_STATS - ICSSG_NUM_STANDARD_STAT= S) +/* PA stats with standard uAPI equivalents, exposed via get_mm_stats only = */ +#define ICSSG_NUM_PA_STANDARD_STATS 5 +#define ICSSG_NUM_ETHTOOL_STATS (ICSSG_NUM_STATS - ICSSG_NUM_STANDARD_STAT= S - \ + ICSSG_NUM_PA_STANDARD_STATS) =20 #define IEP_DEFAULT_CYCLE_TIME_NS 1000000 /* 1 ms */ =20 @@ -460,7 +465,7 @@ int emac_fdb_flow_id_updated(struct prueth_emac *emac); =20 void icssg_stats_work_handler(struct work_struct *work); void emac_update_hardware_stats(struct prueth_emac *emac); -int emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name); +u64 emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name); =20 /* Common functions */ void prueth_cleanup_rx_chns(struct prueth_emac *emac, diff --git a/drivers/net/ethernet/ti/icssg/icssg_stats.c b/drivers/net/ethe= rnet/ti/icssg/icssg_stats.c index 7159baa0155cf..cfdb6f5dc5da1 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_stats.c +++ b/drivers/net/ethernet/ti/icssg/icssg_stats.c @@ -74,7 +74,7 @@ void icssg_stats_work_handler(struct work_struct *work) } EXPORT_SYMBOL_GPL(icssg_stats_work_handler); =20 -int emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name) +u64 emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name) { int i; =20 @@ -91,5 +91,5 @@ int emac_get_stat_by_name(struct prueth_emac *emac, char = *stat_name) } =20 netdev_err(emac->ndev, "Invalid stats %s\n", stat_name); - return -EINVAL; + return 0; } diff --git a/drivers/net/ethernet/ti/icssg/icssg_stats.h b/drivers/net/ethe= rnet/ti/icssg/icssg_stats.h index 5ec0b38e0c67d..b86da8da23a18 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_stats.h +++ b/drivers/net/ethernet/ti/icssg/icssg_stats.h @@ -8,8 +8,6 @@ #ifndef __NET_TI_ICSSG_STATS_H #define __NET_TI_ICSSG_STATS_H =20 -#include "icssg_prueth.h" - #define STATS_TIME_LIMIT_1G_MS 25000 /* 25 seconds @ 1G */ =20 struct miig_stats_regs { @@ -155,50 +153,60 @@ static const struct icssg_miig_stats icssg_all_miig_s= tats[] =3D { ICSSG_MIIG_STATS(tx_bytes, true), }; =20 -#define ICSSG_PA_STATS(field) \ -{ \ - #field, \ - field, \ +#define ICSSG_PA_STATS(field, std) \ +{ \ + #field, \ + field, \ + std, \ } =20 struct icssg_pa_stats { char name[ETH_GSTRING_LEN]; u32 offset; + bool standard_stats; }; =20 static const struct icssg_pa_stats icssg_all_pa_stats[] =3D { - ICSSG_PA_STATS(FW_RTU_PKT_DROP), - ICSSG_PA_STATS(FW_Q0_OVERFLOW), - ICSSG_PA_STATS(FW_Q1_OVERFLOW), - ICSSG_PA_STATS(FW_Q2_OVERFLOW), - ICSSG_PA_STATS(FW_Q3_OVERFLOW), - ICSSG_PA_STATS(FW_Q4_OVERFLOW), - ICSSG_PA_STATS(FW_Q5_OVERFLOW), - ICSSG_PA_STATS(FW_Q6_OVERFLOW), - ICSSG_PA_STATS(FW_Q7_OVERFLOW), - ICSSG_PA_STATS(FW_DROPPED_PKT), - ICSSG_PA_STATS(FW_RX_ERROR), - ICSSG_PA_STATS(FW_RX_DS_INVALID), - ICSSG_PA_STATS(FW_TX_DROPPED_PACKET), - ICSSG_PA_STATS(FW_TX_TS_DROPPED_PACKET), - ICSSG_PA_STATS(FW_INF_PORT_DISABLED), - ICSSG_PA_STATS(FW_INF_SAV), - ICSSG_PA_STATS(FW_INF_SA_DL), - ICSSG_PA_STATS(FW_INF_PORT_BLOCKED), - ICSSG_PA_STATS(FW_INF_DROP_TAGGED), - ICSSG_PA_STATS(FW_INF_DROP_PRIOTAGGED), - ICSSG_PA_STATS(FW_INF_DROP_NOTAG), - ICSSG_PA_STATS(FW_INF_DROP_NOTMEMBER), - ICSSG_PA_STATS(FW_RX_EOF_SHORT_FRMERR), - ICSSG_PA_STATS(FW_RX_B0_DROP_EARLY_EOF), - ICSSG_PA_STATS(FW_TX_JUMBO_FRM_CUTOFF), - ICSSG_PA_STATS(FW_RX_EXP_FRAG_Q_DROP), - ICSSG_PA_STATS(FW_RX_FIFO_OVERRUN), - ICSSG_PA_STATS(FW_CUT_THR_PKT), - ICSSG_PA_STATS(FW_HOST_RX_PKT_CNT), - ICSSG_PA_STATS(FW_HOST_TX_PKT_CNT), - ICSSG_PA_STATS(FW_HOST_EGRESS_Q_PRE_OVERFLOW), - ICSSG_PA_STATS(FW_HOST_EGRESS_Q_EXP_OVERFLOW), + ICSSG_PA_STATS(FW_RTU_PKT_DROP, false), + ICSSG_PA_STATS(FW_Q0_OVERFLOW, false), + ICSSG_PA_STATS(FW_Q1_OVERFLOW, false), + ICSSG_PA_STATS(FW_Q2_OVERFLOW, false), + ICSSG_PA_STATS(FW_Q3_OVERFLOW, false), + ICSSG_PA_STATS(FW_Q4_OVERFLOW, false), + ICSSG_PA_STATS(FW_Q5_OVERFLOW, false), + ICSSG_PA_STATS(FW_Q6_OVERFLOW, false), + ICSSG_PA_STATS(FW_Q7_OVERFLOW, false), + ICSSG_PA_STATS(FW_DROPPED_PKT, false), + ICSSG_PA_STATS(FW_RX_ERROR, false), + ICSSG_PA_STATS(FW_RX_DS_INVALID, false), + ICSSG_PA_STATS(FW_TX_DROPPED_PACKET, false), + ICSSG_PA_STATS(FW_TX_TS_DROPPED_PACKET, false), + ICSSG_PA_STATS(FW_INF_PORT_DISABLED, false), + ICSSG_PA_STATS(FW_INF_SAV, false), + ICSSG_PA_STATS(FW_INF_SA_DL, false), + ICSSG_PA_STATS(FW_INF_PORT_BLOCKED, false), + ICSSG_PA_STATS(FW_INF_DROP_TAGGED, false), + ICSSG_PA_STATS(FW_INF_DROP_PRIOTAGGED, false), + ICSSG_PA_STATS(FW_INF_DROP_NOTAG, false), + ICSSG_PA_STATS(FW_INF_DROP_NOTMEMBER, false), + /* MAC Merge counters: exposed via .get_mm_stats standard uAPI, + * not duplicated in the private ethtool -S table. + */ + ICSSG_PA_STATS(FW_PREEMPT_BAD_FRAG, true), + ICSSG_PA_STATS(FW_PREEMPT_ASSEMBLY_ERR, true), + ICSSG_PA_STATS(FW_PREEMPT_FRAG_CNT_TX, true), + ICSSG_PA_STATS(FW_PREEMPT_ASSEMBLY_OK, true), + ICSSG_PA_STATS(FW_PREEMPT_FRAG_CNT_RX, true), + ICSSG_PA_STATS(FW_RX_EOF_SHORT_FRMERR, false), + ICSSG_PA_STATS(FW_RX_B0_DROP_EARLY_EOF, false), + ICSSG_PA_STATS(FW_TX_JUMBO_FRM_CUTOFF, false), + ICSSG_PA_STATS(FW_RX_EXP_FRAG_Q_DROP, false), + ICSSG_PA_STATS(FW_RX_FIFO_OVERRUN, false), + ICSSG_PA_STATS(FW_CUT_THR_PKT, false), + ICSSG_PA_STATS(FW_HOST_RX_PKT_CNT, false), + ICSSG_PA_STATS(FW_HOST_TX_PKT_CNT, false), + ICSSG_PA_STATS(FW_HOST_EGRESS_Q_PRE_OVERFLOW, false), + ICSSG_PA_STATS(FW_HOST_EGRESS_Q_EXP_OVERFLOW, false), }; =20 #endif /* __NET_TI_ICSSG_STATS_H */ diff --git a/drivers/net/ethernet/ti/icssg/icssg_switch_map.h b/drivers/net= /ethernet/ti/icssg/icssg_switch_map.h index 7e053b8af3ece..855fd4ed0b3f6 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_switch_map.h +++ b/drivers/net/ethernet/ti/icssg/icssg_switch_map.h @@ -256,6 +256,11 @@ #define FW_INF_DROP_PRIOTAGGED 0x0148 #define FW_INF_DROP_NOTAG 0x0150 #define FW_INF_DROP_NOTMEMBER 0x0158 +#define FW_PREEMPT_BAD_FRAG 0x0160 +#define FW_PREEMPT_ASSEMBLY_ERR 0x0168 +#define FW_PREEMPT_FRAG_CNT_TX 0x0170 +#define FW_PREEMPT_ASSEMBLY_OK 0x0178 +#define FW_PREEMPT_FRAG_CNT_RX 0x0180 #define FW_RX_EOF_SHORT_FRMERR 0x0188 #define FW_RX_B0_DROP_EARLY_EOF 0x0190 #define FW_TX_JUMBO_FRM_CUTOFF 0x0198 --=20 2.43.0