diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/dsa/ocelot/felix.c | 19 | ||||
| -rw-r--r-- | drivers/net/dsa/ocelot/felix_vsc9959.c | 19 | ||||
| -rw-r--r-- | drivers/net/ethernet/mscc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot.c | 18 | ||||
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot.h | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot_mm.c | 214 |
6 files changed, 261 insertions, 12 deletions
diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c index 7867ca85410f..d21e7be2f8c7 100644 --- a/drivers/net/dsa/ocelot/felix.c +++ b/drivers/net/dsa/ocelot/felix.c @@ -2024,6 +2024,23 @@ static int felix_port_del_dscp_prio(struct dsa_switch *ds, int port, u8 dscp, return ocelot_port_del_dscp_prio(ocelot, port, dscp, prio); } +static int felix_get_mm(struct dsa_switch *ds, int port, + struct ethtool_mm_state *state) +{ + struct ocelot *ocelot = ds->priv; + + return ocelot_port_get_mm(ocelot, port, state); +} + +static int felix_set_mm(struct dsa_switch *ds, int port, + struct ethtool_mm_cfg *cfg, + struct netlink_ext_ack *extack) +{ + struct ocelot *ocelot = ds->priv; + + return ocelot_port_set_mm(ocelot, port, cfg, extack); +} + static void felix_get_mm_stats(struct dsa_switch *ds, int port, struct ethtool_mm_stats *stats) { @@ -2039,6 +2056,8 @@ const struct dsa_switch_ops felix_switch_ops = { .setup = felix_setup, .teardown = felix_teardown, .set_ageing_time = felix_set_ageing_time, + .get_mm = felix_get_mm, + .set_mm = felix_set_mm, .get_mm_stats = felix_get_mm_stats, .get_stats64 = felix_get_stats64, .get_pause_stats = felix_get_pause_stats, diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c index 535512280f12..43dc8ed4854d 100644 --- a/drivers/net/dsa/ocelot/felix_vsc9959.c +++ b/drivers/net/dsa/ocelot/felix_vsc9959.c @@ -6,6 +6,7 @@ #include <soc/mscc/ocelot_qsys.h> #include <soc/mscc/ocelot_vcap.h> #include <soc/mscc/ocelot_ana.h> +#include <soc/mscc/ocelot_dev.h> #include <soc/mscc/ocelot_ptp.h> #include <soc/mscc/ocelot_sys.h> #include <net/tc_act/tc_gate.h> @@ -476,6 +477,9 @@ static const u32 vsc9959_dev_gmii_regmap[] = { REG(DEV_MAC_FC_MAC_LOW_CFG, 0x3c), REG(DEV_MAC_FC_MAC_HIGH_CFG, 0x40), REG(DEV_MAC_STICKY, 0x44), + REG(DEV_MM_ENABLE_CONFIG, 0x48), + REG(DEV_MM_VERIF_CONFIG, 0x4C), + REG(DEV_MM_STATUS, 0x50), REG_RESERVED(PCS1G_CFG), REG_RESERVED(PCS1G_MODE_CFG), REG_RESERVED(PCS1G_SD_CFG), @@ -2599,20 +2603,19 @@ static const struct felix_info felix_info_vsc9959 = { .tas_guard_bands_update = vsc9959_tas_guard_bands_update, }; +/* The INTB interrupt is shared between for PTP TX timestamp availability + * notification and MAC Merge status change on each port. + */ static irqreturn_t felix_irq_handler(int irq, void *data) { struct ocelot *ocelot = (struct ocelot *)data; - - /* The INTB interrupt is used for both PTP TX timestamp interrupt - * and preemption status change interrupt on each port. - * - * - Get txtstamp if have - * - TODO: handle preemption. Without handling it, driver may get - * interrupt storm. - */ + int port; ocelot_get_txtstamp(ocelot); + for (port = 0; port < ocelot->num_phys_ports; port++) + ocelot_port_mm_irq(ocelot, port); + return IRQ_HANDLED; } diff --git a/drivers/net/ethernet/mscc/Makefile b/drivers/net/ethernet/mscc/Makefile index 5d435a565d4c..16987b72dfc0 100644 --- a/drivers/net/ethernet/mscc/Makefile +++ b/drivers/net/ethernet/mscc/Makefile @@ -5,6 +5,7 @@ mscc_ocelot_switch_lib-y := \ ocelot_devlink.o \ ocelot_flower.o \ ocelot_io.o \ + ocelot_mm.o \ ocelot_police.o \ ocelot_ptp.o \ ocelot_stats.o \ diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c index da56f9bfeaf0..c060b03f7e27 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -2738,10 +2738,8 @@ int ocelot_init(struct ocelot *ocelot) return -ENOMEM; ret = ocelot_stats_init(ocelot); - if (ret) { - destroy_workqueue(ocelot->owq); - return ret; - } + if (ret) + goto err_stats_init; INIT_LIST_HEAD(&ocelot->multicast); INIT_LIST_HEAD(&ocelot->pgids); @@ -2756,6 +2754,12 @@ int ocelot_init(struct ocelot *ocelot) if (ocelot->ops->psfp_init) ocelot->ops->psfp_init(ocelot); + if (ocelot->mm_supported) { + ret = ocelot_mm_init(ocelot); + if (ret) + goto err_mm_init; + } + for (port = 0; port < ocelot->num_phys_ports; port++) { /* Clear all counters (5 groups) */ ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port) | @@ -2853,6 +2857,12 @@ int ocelot_init(struct ocelot *ocelot) ANA_CPUQ_8021_CFG, i); return 0; + +err_mm_init: + ocelot_stats_deinit(ocelot); +err_stats_init: + destroy_workqueue(ocelot->owq); + return ret; } EXPORT_SYMBOL(ocelot_init); diff --git a/drivers/net/ethernet/mscc/ocelot.h b/drivers/net/ethernet/mscc/ocelot.h index 70dbd9c4e512..e9a0179448bf 100644 --- a/drivers/net/ethernet/mscc/ocelot.h +++ b/drivers/net/ethernet/mscc/ocelot.h @@ -109,6 +109,8 @@ void ocelot_mirror_put(struct ocelot *ocelot); int ocelot_stats_init(struct ocelot *ocelot); void ocelot_stats_deinit(struct ocelot *ocelot); +int ocelot_mm_init(struct ocelot *ocelot); + extern struct notifier_block ocelot_netdevice_nb; extern struct notifier_block ocelot_switchdev_nb; extern struct notifier_block ocelot_switchdev_blocking_nb; diff --git a/drivers/net/ethernet/mscc/ocelot_mm.c b/drivers/net/ethernet/mscc/ocelot_mm.c new file mode 100644 index 000000000000..08820f2341a1 --- /dev/null +++ b/drivers/net/ethernet/mscc/ocelot_mm.c @@ -0,0 +1,214 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MIT) +/* + * Hardware library for MAC Merge Layer and Frame Preemption on TSN-capable + * switches (VSC9959) + * + * Copyright 2022-2023 NXP + */ +#include <linux/ethtool.h> +#include <soc/mscc/ocelot.h> +#include <soc/mscc/ocelot_dev.h> +#include <soc/mscc/ocelot_qsys.h> + +#include "ocelot.h" + +static const char * +mm_verify_state_to_string(enum ethtool_mm_verify_status state) +{ + switch (state) { + case ETHTOOL_MM_VERIFY_STATUS_INITIAL: + return "INITIAL"; + case ETHTOOL_MM_VERIFY_STATUS_VERIFYING: + return "VERIFYING"; + case ETHTOOL_MM_VERIFY_STATUS_SUCCEEDED: + return "SUCCEEDED"; + case ETHTOOL_MM_VERIFY_STATUS_FAILED: + return "FAILED"; + case ETHTOOL_MM_VERIFY_STATUS_DISABLED: + return "DISABLED"; + default: + return "UNKNOWN"; + } +} + +static enum ethtool_mm_verify_status ocelot_mm_verify_status(u32 val) +{ + switch (DEV_MM_STAT_MM_STATUS_PRMPT_VERIFY_STATE_X(val)) { + case 0: + return ETHTOOL_MM_VERIFY_STATUS_INITIAL; + case 1: + return ETHTOOL_MM_VERIFY_STATUS_VERIFYING; + case 2: + return ETHTOOL_MM_VERIFY_STATUS_SUCCEEDED; + case 3: + return ETHTOOL_MM_VERIFY_STATUS_FAILED; + case 4: + return ETHTOOL_MM_VERIFY_STATUS_DISABLED; + default: + return ETHTOOL_MM_VERIFY_STATUS_UNKNOWN; + } +} + +void ocelot_port_mm_irq(struct ocelot *ocelot, int port) +{ + struct ocelot_port *ocelot_port = ocelot->ports[port]; + struct ocelot_mm_state *mm = &ocelot->mm[port]; + enum ethtool_mm_verify_status verify_status; + u32 val; + + mutex_lock(&mm->lock); + + val = ocelot_port_readl(ocelot_port, DEV_MM_STATUS); + + verify_status = ocelot_mm_verify_status(val); + if (mm->verify_status != verify_status) { + dev_dbg(ocelot->dev, + "Port %d MAC Merge verification state %s\n", + port, mm_verify_state_to_string(verify_status)); + mm->verify_status = verify_status; + } + + if (val & DEV_MM_STAT_MM_STATUS_PRMPT_ACTIVE_STICKY) { + mm->tx_active = !!(val & DEV_MM_STAT_MM_STATUS_PRMPT_ACTIVE_STATUS); + + dev_dbg(ocelot->dev, "Port %d TX preemption %s\n", + port, mm->tx_active ? "active" : "inactive"); + } + + if (val & DEV_MM_STAT_MM_STATUS_UNEXP_RX_PFRM_STICKY) { + dev_err(ocelot->dev, + "Unexpected P-frame received on port %d while verification was unsuccessful or not yet verified\n", + port); + } + + if (val & DEV_MM_STAT_MM_STATUS_UNEXP_TX_PFRM_STICKY) { + dev_err(ocelot->dev, + "Unexpected P-frame requested to be transmitted on port %d while verification was unsuccessful or not yet verified, or MM_TX_ENA=0\n", + port); + } + + ocelot_port_writel(ocelot_port, val, DEV_MM_STATUS); + + mutex_unlock(&mm->lock); +} +EXPORT_SYMBOL_GPL(ocelot_port_mm_irq); + +int ocelot_port_set_mm(struct ocelot *ocelot, int port, + struct ethtool_mm_cfg *cfg, + struct netlink_ext_ack *extack) +{ + struct ocelot_port *ocelot_port = ocelot->ports[port]; + u32 mm_enable = 0, verify_disable = 0, add_frag_size; + struct ocelot_mm_state *mm; + int err; + + if (!ocelot->mm_supported) + return -EOPNOTSUPP; + + mm = &ocelot->mm[port]; + + err = ethtool_mm_frag_size_min_to_add(cfg->tx_min_frag_size, + &add_frag_size, extack); + if (err) + return err; + + if (cfg->pmac_enabled) + mm_enable |= DEV_MM_CONFIG_ENABLE_CONFIG_MM_RX_ENA; + + if (cfg->tx_enabled) + mm_enable |= DEV_MM_CONFIG_ENABLE_CONFIG_MM_TX_ENA; + + if (!cfg->verify_enabled) + verify_disable = DEV_MM_CONFIG_VERIF_CONFIG_PRM_VERIFY_DIS; + + mutex_lock(&mm->lock); + + ocelot_port_rmwl(ocelot_port, mm_enable, + DEV_MM_CONFIG_ENABLE_CONFIG_MM_TX_ENA | + DEV_MM_CONFIG_ENABLE_CONFIG_MM_RX_ENA, + DEV_MM_ENABLE_CONFIG); + + ocelot_port_rmwl(ocelot_port, verify_disable | + DEV_MM_CONFIG_VERIF_CONFIG_PRM_VERIFY_TIME(cfg->verify_time), + DEV_MM_CONFIG_VERIF_CONFIG_PRM_VERIFY_DIS | + DEV_MM_CONFIG_VERIF_CONFIG_PRM_VERIFY_TIME_M, + DEV_MM_VERIF_CONFIG); + + ocelot_rmw_rix(ocelot, + QSYS_PREEMPTION_CFG_MM_ADD_FRAG_SIZE(add_frag_size), + QSYS_PREEMPTION_CFG_MM_ADD_FRAG_SIZE_M, + QSYS_PREEMPTION_CFG, + port); + + mutex_unlock(&mm->lock); + + return 0; +} +EXPORT_SYMBOL_GPL(ocelot_port_set_mm); + +int ocelot_port_get_mm(struct ocelot *ocelot, int port, + struct ethtool_mm_state *state) +{ + struct ocelot_port *ocelot_port = ocelot->ports[port]; + struct ocelot_mm_state *mm; + u32 val, add_frag_size; + + if (!ocelot->mm_supported) + return -EOPNOTSUPP; + + mm = &ocelot->mm[port]; + + mutex_lock(&mm->lock); + + val = ocelot_port_readl(ocelot_port, DEV_MM_ENABLE_CONFIG); + state->pmac_enabled = !!(val & DEV_MM_CONFIG_ENABLE_CONFIG_MM_RX_ENA); + state->tx_enabled = !!(val & DEV_MM_CONFIG_ENABLE_CONFIG_MM_TX_ENA); + + val = ocelot_port_readl(ocelot_port, DEV_MM_VERIF_CONFIG); + state->verify_time = DEV_MM_CONFIG_VERIF_CONFIG_PRM_VERIFY_TIME_X(val); + state->max_verify_time = 128; + + val = ocelot_read_rix(ocelot, QSYS_PREEMPTION_CFG, port); + add_frag_size = QSYS_PREEMPTION_CFG_MM_ADD_FRAG_SIZE_X(val); + state->tx_min_frag_size = ethtool_mm_frag_size_add_to_min(add_frag_size); + state->rx_min_frag_size = ETH_ZLEN; + + state->verify_status = mm->verify_status; + state->tx_active = mm->tx_active; + + mutex_unlock(&mm->lock); + + return 0; +} +EXPORT_SYMBOL_GPL(ocelot_port_get_mm); + +int ocelot_mm_init(struct ocelot *ocelot) +{ + struct ocelot_port *ocelot_port; + struct ocelot_mm_state *mm; + int port; + + if (!ocelot->mm_supported) + return 0; + + ocelot->mm = devm_kcalloc(ocelot->dev, ocelot->num_phys_ports, + sizeof(*ocelot->mm), GFP_KERNEL); + if (!ocelot->mm) + return -ENOMEM; + + for (port = 0; port < ocelot->num_phys_ports; port++) { + u32 val; + + mm = &ocelot->mm[port]; + mutex_init(&mm->lock); + ocelot_port = ocelot->ports[port]; + + /* Update initial status variable for the + * verification state machine + */ + val = ocelot_port_readl(ocelot_port, DEV_MM_STATUS); + mm->verify_status = ocelot_mm_verify_status(val); + } + + return 0; +} |