From 52323ef75414d60b17f683076833eb55a6bffa2b Mon Sep 17 00:00:00 2001 From: Oleksandr Mazur Date: Tue, 19 Jul 2022 13:57:16 +0300 Subject: [PATCH] net: marvell: prestera: add phylink support For SFP port prestera driver will use kernel phylink infrastucture to configure port mode based on the module that has beed inserted Co-developed-by: Yevhen Orlov Signed-off-by: Yevhen Orlov Co-developed-by: Taras Chornyi Signed-off-by: Taras Chornyi Signed-off-by: Oleksandr Mazur Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/prestera/Kconfig | 1 + drivers/net/ethernet/marvell/prestera/prestera.h | 10 + .../ethernet/marvell/prestera/prestera_ethtool.c | 28 +- .../ethernet/marvell/prestera/prestera_ethtool.h | 3 - .../net/ethernet/marvell/prestera/prestera_main.c | 354 ++++++++++++++++++--- 5 files changed, 334 insertions(+), 62 deletions(-) diff --git a/drivers/net/ethernet/marvell/prestera/Kconfig b/drivers/net/ethernet/marvell/prestera/Kconfig index b6f20e2..f2f7663 100644 --- a/drivers/net/ethernet/marvell/prestera/Kconfig +++ b/drivers/net/ethernet/marvell/prestera/Kconfig @@ -8,6 +8,7 @@ config PRESTERA depends on NET_SWITCHDEV && VLAN_8021Q depends on BRIDGE || BRIDGE=n select NET_DEVLINK + select PHYLINK help This driver supports Marvell Prestera Switch ASICs family. diff --git a/drivers/net/ethernet/marvell/prestera/prestera.h b/drivers/net/ethernet/marvell/prestera/prestera.h index bff9651..2f84d0f 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera.h +++ b/drivers/net/ethernet/marvell/prestera/prestera.h @@ -7,6 +7,7 @@ #include #include #include +#include #include #include @@ -92,6 +93,7 @@ struct prestera_lag { struct prestera_flow_block; struct prestera_port_mac_state { + bool valid; u32 mode; u32 speed; bool oper; @@ -151,6 +153,13 @@ struct prestera_port { struct prestera_port_phy_config cfg_phy; struct prestera_port_mac_state state_mac; struct prestera_port_phy_state state_phy; + + struct phylink_config phy_config; + struct phylink *phy_link; + struct phylink_pcs phylink_pcs; + + /* protects state_mac */ + spinlock_t state_mac_lock; }; struct prestera_device { @@ -291,6 +300,7 @@ struct prestera_switch { u32 mtu_min; u32 mtu_max; u8 id; + struct device_node *np; struct prestera_router *router; struct prestera_lag *lags; struct prestera_counter *counter; diff --git a/drivers/net/ethernet/marvell/prestera/prestera_ethtool.c b/drivers/net/ethernet/marvell/prestera/prestera_ethtool.c index 40d5b89..1da7ff8 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_ethtool.c +++ b/drivers/net/ethernet/marvell/prestera/prestera_ethtool.c @@ -521,6 +521,9 @@ prestera_ethtool_get_link_ksettings(struct net_device *dev, ecmd->base.speed = SPEED_UNKNOWN; ecmd->base.duplex = DUPLEX_UNKNOWN; + if (port->phy_link) + return phylink_ethtool_ksettings_get(port->phy_link, ecmd); + ecmd->base.autoneg = port->autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE; if (port->caps.type == PRESTERA_PORT_TYPE_TP) { @@ -648,6 +651,9 @@ prestera_ethtool_set_link_ksettings(struct net_device *dev, u8 adver_fec; int err; + if (port->phy_link) + return phylink_ethtool_ksettings_set(port->phy_link, ecmd); + err = prestera_port_type_set(ecmd, port); if (err) return err; @@ -782,28 +788,6 @@ static int prestera_ethtool_nway_reset(struct net_device *dev) return -EINVAL; } -void prestera_ethtool_port_state_changed(struct prestera_port *port, - struct prestera_port_event *evt) -{ - struct prestera_port_mac_state *smac = &port->state_mac; - - smac->oper = evt->data.mac.oper; - - if (smac->oper) { - smac->mode = evt->data.mac.mode; - smac->speed = evt->data.mac.speed; - smac->duplex = evt->data.mac.duplex; - smac->fc = evt->data.mac.fc; - smac->fec = evt->data.mac.fec; - } else { - smac->mode = PRESTERA_MAC_MODE_MAX; - smac->speed = SPEED_UNKNOWN; - smac->duplex = DUPLEX_UNKNOWN; - smac->fc = 0; - smac->fec = 0; - } -} - const struct ethtool_ops prestera_ethtool_ops = { .get_drvinfo = prestera_ethtool_get_drvinfo, .get_link_ksettings = prestera_ethtool_get_link_ksettings, diff --git a/drivers/net/ethernet/marvell/prestera/prestera_ethtool.h b/drivers/net/ethernet/marvell/prestera/prestera_ethtool.h index 9eb18e9..bd56008 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_ethtool.h +++ b/drivers/net/ethernet/marvell/prestera/prestera_ethtool.h @@ -11,7 +11,4 @@ struct prestera_port; extern const struct ethtool_ops prestera_ethtool_ops; -void prestera_ethtool_port_state_changed(struct prestera_port *port, - struct prestera_port_event *evt); - #endif /* _PRESTERA_ETHTOOL_H_ */ diff --git a/drivers/net/ethernet/marvell/prestera/prestera_main.c b/drivers/net/ethernet/marvell/prestera/prestera_main.c index ea5bd50..c267ca1 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_main.c +++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c @@ -9,6 +9,7 @@ #include #include #include +#include #include "prestera.h" #include "prestera_hw.h" @@ -142,18 +143,24 @@ static int prestera_port_open(struct net_device *dev) struct prestera_port_mac_config cfg_mac; int err = 0; - if (port->caps.transceiver == PRESTERA_PORT_TCVR_SFP) { - err = prestera_port_cfg_mac_read(port, &cfg_mac); - if (!err) { - cfg_mac.admin = true; - err = prestera_port_cfg_mac_write(port, &cfg_mac); - } + if (port->phy_link) { + phylink_start(port->phy_link); } else { - port->cfg_phy.admin = true; - err = prestera_hw_port_phy_mode_set(port, true, port->autoneg, - port->cfg_phy.mode, - port->adver_link_modes, - port->cfg_phy.mdix); + if (port->caps.transceiver == PRESTERA_PORT_TCVR_SFP) { + err = prestera_port_cfg_mac_read(port, &cfg_mac); + if (!err) { + cfg_mac.admin = true; + err = prestera_port_cfg_mac_write(port, + &cfg_mac); + } + } else { + port->cfg_phy.admin = true; + err = prestera_hw_port_phy_mode_set(port, true, + port->autoneg, + port->cfg_phy.mode, + port->adver_link_modes, + port->cfg_phy.mdix); + } } netif_start_queue(dev); @@ -169,23 +176,259 @@ static int prestera_port_close(struct net_device *dev) netif_stop_queue(dev); - if (port->caps.transceiver == PRESTERA_PORT_TCVR_SFP) { + if (port->phy_link) { + phylink_stop(port->phy_link); + phylink_disconnect_phy(port->phy_link); err = prestera_port_cfg_mac_read(port, &cfg_mac); if (!err) { cfg_mac.admin = false; prestera_port_cfg_mac_write(port, &cfg_mac); } } else { - port->cfg_phy.admin = false; - err = prestera_hw_port_phy_mode_set(port, false, port->autoneg, - port->cfg_phy.mode, - port->adver_link_modes, - port->cfg_phy.mdix); + if (port->caps.transceiver == PRESTERA_PORT_TCVR_SFP) { + err = prestera_port_cfg_mac_read(port, &cfg_mac); + if (!err) { + cfg_mac.admin = false; + prestera_port_cfg_mac_write(port, &cfg_mac); + } + } else { + port->cfg_phy.admin = false; + err = prestera_hw_port_phy_mode_set(port, false, port->autoneg, + port->cfg_phy.mode, + port->adver_link_modes, + port->cfg_phy.mdix); + } + } + + return err; +} + +static void +prestera_port_mac_state_cache_read(struct prestera_port *port, + struct prestera_port_mac_state *state) +{ + spin_lock(&port->state_mac_lock); + *state = port->state_mac; + spin_unlock(&port->state_mac_lock); +} + +static void +prestera_port_mac_state_cache_write(struct prestera_port *port, + struct prestera_port_mac_state *state) +{ + spin_lock(&port->state_mac_lock); + port->state_mac = *state; + spin_unlock(&port->state_mac_lock); +} + +static struct prestera_port *prestera_pcs_to_port(struct phylink_pcs *pcs) +{ + return container_of(pcs, struct prestera_port, phylink_pcs); +} + +static void prestera_mac_config(struct phylink_config *config, + unsigned int an_mode, + const struct phylink_link_state *state) +{ +} + +static void prestera_mac_link_down(struct phylink_config *config, + unsigned int mode, phy_interface_t interface) +{ + struct net_device *ndev = to_net_dev(config->dev); + struct prestera_port *port = netdev_priv(ndev); + struct prestera_port_mac_state state_mac; + + /* Invalidate. Parameters will update on next link event. */ + memset(&state_mac, 0, sizeof(state_mac)); + state_mac.valid = false; + prestera_port_mac_state_cache_write(port, &state_mac); +} + +static void prestera_mac_link_up(struct phylink_config *config, + struct phy_device *phy, + unsigned int mode, phy_interface_t interface, + int speed, int duplex, + bool tx_pause, bool rx_pause) +{ +} + +static struct phylink_pcs * +prestera_mac_select_pcs(struct phylink_config *config, + phy_interface_t interface) +{ + struct net_device *dev = to_net_dev(config->dev); + struct prestera_port *port = netdev_priv(dev); + + return &port->phylink_pcs; +} + +static void prestera_pcs_get_state(struct phylink_pcs *pcs, + struct phylink_link_state *state) +{ + struct prestera_port *port = container_of(pcs, struct prestera_port, + phylink_pcs); + struct prestera_port_mac_state smac; + + prestera_port_mac_state_cache_read(port, &smac); + + if (smac.valid) { + state->link = smac.oper ? 1 : 0; + /* AN is completed, when port is up */ + state->an_complete = (smac.oper && port->autoneg) ? 1 : 0; + state->speed = smac.speed; + state->duplex = smac.duplex; + } else { + state->link = 0; + state->an_complete = 0; + } +} + +static int prestera_pcs_config(struct phylink_pcs *pcs, + unsigned int mode, + phy_interface_t interface, + const unsigned long *advertising, + bool permit_pause_to_mac) +{ + struct prestera_port *port = port = prestera_pcs_to_port(pcs); + struct prestera_port_mac_config cfg_mac; + int err; + + err = prestera_port_cfg_mac_read(port, &cfg_mac); + if (err) + return err; + + cfg_mac.admin = true; + cfg_mac.fec = PRESTERA_PORT_FEC_OFF; + + switch (interface) { + case PHY_INTERFACE_MODE_10GBASER: + cfg_mac.speed = SPEED_10000; + cfg_mac.inband = 0; + cfg_mac.mode = PRESTERA_MAC_MODE_SR_LR; + break; + case PHY_INTERFACE_MODE_2500BASEX: + cfg_mac.speed = SPEED_2500; + cfg_mac.duplex = DUPLEX_FULL; + cfg_mac.inband = test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, + advertising); + cfg_mac.mode = PRESTERA_MAC_MODE_SGMII; + break; + case PHY_INTERFACE_MODE_SGMII: + cfg_mac.inband = 1; + cfg_mac.mode = PRESTERA_MAC_MODE_SGMII; + break; + case PHY_INTERFACE_MODE_1000BASEX: + default: + cfg_mac.speed = SPEED_1000; + cfg_mac.duplex = DUPLEX_FULL; + cfg_mac.inband = test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, + advertising); + cfg_mac.mode = PRESTERA_MAC_MODE_1000BASE_X; + break; } + err = prestera_port_cfg_mac_write(port, &cfg_mac); + if (err) + return err; + + return 0; +} + +static void prestera_pcs_an_restart(struct phylink_pcs *pcs) +{ + /* TODO: add 1000basex AN restart support + * (Currently FW has no support for 1000baseX AN restart, but it will in the future, + * so as for now the function would stay empty.) + */ +} + +static const struct phylink_mac_ops prestera_mac_ops = { + .validate = phylink_generic_validate, + .mac_select_pcs = prestera_mac_select_pcs, + .mac_config = prestera_mac_config, + .mac_link_down = prestera_mac_link_down, + .mac_link_up = prestera_mac_link_up, +}; + +static const struct phylink_pcs_ops prestera_pcs_ops = { + .pcs_get_state = prestera_pcs_get_state, + .pcs_config = prestera_pcs_config, + .pcs_an_restart = prestera_pcs_an_restart, +}; + +static int prestera_port_sfp_bind(struct prestera_port *port) +{ + struct prestera_switch *sw = port->sw; + struct device_node *ports, *node; + struct fwnode_handle *fwnode; + struct phylink *phy_link; + int err; + + if (!sw->np) + return 0; + + ports = of_find_node_by_name(sw->np, "ports"); + + for_each_child_of_node(ports, node) { + int num; + + err = of_property_read_u32(node, "prestera,port-num", &num); + if (err) { + dev_err(sw->dev->dev, + "device node %pOF has no valid reg property: %d\n", + node, err); + goto out; + } + + if (port->fp_id != num) + continue; + + port->phylink_pcs.ops = &prestera_pcs_ops; + + port->phy_config.dev = &port->dev->dev; + port->phy_config.type = PHYLINK_NETDEV; + + fwnode = of_fwnode_handle(node); + + __set_bit(PHY_INTERFACE_MODE_10GBASER, + port->phy_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_2500BASEX, + port->phy_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_SGMII, + port->phy_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_1000BASEX, + port->phy_config.supported_interfaces); + + port->phy_config.mac_capabilities = + MAC_1000 | MAC_2500FD | MAC_10000FD; + + phy_link = phylink_create(&port->phy_config, fwnode, + PHY_INTERFACE_MODE_INTERNAL, + &prestera_mac_ops); + if (IS_ERR(phy_link)) { + netdev_err(port->dev, "failed to create phylink\n"); + err = PTR_ERR(phy_link); + goto out; + } + + port->phy_link = phy_link; + break; + } + +out: + of_node_put(ports); return err; } +static int prestera_port_sfp_unbind(struct prestera_port *port) +{ + if (port->phy_link) + phylink_destroy(port->phy_link); + + return 0; +} + static netdev_tx_t prestera_port_xmit(struct sk_buff *skb, struct net_device *dev) { @@ -366,6 +609,8 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id) port->id = id; port->sw = sw; + spin_lock_init(&port->state_mac_lock); + err = prestera_hw_port_info_get(port, &port->dev_id, &port->hw_id, &port->fp_id); if (err) { @@ -380,8 +625,10 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id) dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_HW_TC; dev->netdev_ops = &prestera_netdev_ops; dev->ethtool_ops = &prestera_ethtool_ops; + SET_NETDEV_DEV(dev, sw->dev->dev); - netif_carrier_off(dev); + if (port->caps.transceiver != PRESTERA_PORT_TCVR_SFP) + netif_carrier_off(dev); dev->mtu = min_t(unsigned int, sw->mtu_max, PRESTERA_MTU_DEFAULT); dev->min_mtu = sw->mtu_min; @@ -432,7 +679,7 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id) cfg_mac.admin = false; cfg_mac.mode = PRESTERA_MAC_MODE_MAX; } - cfg_mac.inband = false; + cfg_mac.inband = 0; cfg_mac.speed = 0; cfg_mac.duplex = DUPLEX_UNKNOWN; cfg_mac.fec = PRESTERA_PORT_FEC_OFF; @@ -474,8 +721,13 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id) prestera_devlink_port_set(port); + err = prestera_port_sfp_bind(port); + if (err) + goto err_sfp_bind; + return 0; +err_sfp_bind: err_register_netdev: prestera_port_list_del(port); err_port_init: @@ -521,8 +773,10 @@ static int prestera_create_ports(struct prestera_switch *sw) return 0; err_port_create: - list_for_each_entry_safe(port, tmp, &sw->port_list, list) + list_for_each_entry_safe(port, tmp, &sw->port_list, list) { + prestera_port_sfp_unbind(port); prestera_port_destroy(port); + } return err; } @@ -530,25 +784,47 @@ err_port_create: static void prestera_port_handle_event(struct prestera_switch *sw, struct prestera_event *evt, void *arg) { + struct prestera_port_mac_state smac; + struct prestera_port_event *pevt; struct delayed_work *caching_dw; struct prestera_port *port; - port = prestera_find_port(sw, evt->port_evt.port_id); - if (!port || !port->dev) - return; - - caching_dw = &port->cached_hw_stats.caching_dw; - - prestera_ethtool_port_state_changed(port, &evt->port_evt); - if (evt->id == PRESTERA_PORT_EVENT_MAC_STATE_CHANGED) { + pevt = &evt->port_evt; + port = prestera_find_port(sw, pevt->port_id); + if (!port || !port->dev) + return; + + caching_dw = &port->cached_hw_stats.caching_dw; + + if (port->phy_link) { + memset(&smac, 0, sizeof(smac)); + smac.valid = true; + smac.oper = pevt->data.mac.oper; + if (smac.oper) { + smac.mode = pevt->data.mac.mode; + smac.speed = pevt->data.mac.speed; + smac.duplex = pevt->data.mac.duplex; + smac.fc = pevt->data.mac.fc; + smac.fec = pevt->data.mac.fec; + phylink_mac_change(port->phy_link, true); + } else { + phylink_mac_change(port->phy_link, false); + } + prestera_port_mac_state_cache_write(port, &smac); + } + if (port->state_mac.oper) { - netif_carrier_on(port->dev); + if (!port->phy_link) + netif_carrier_on(port->dev); + if (!delayed_work_pending(caching_dw)) queue_delayed_work(prestera_wq, caching_dw, 0); } else if (netif_running(port->dev) && netif_carrier_ok(port->dev)) { - netif_carrier_off(port->dev); + if (!port->phy_link) + netif_carrier_off(port->dev); + if (delayed_work_pending(caching_dw)) cancel_delayed_work(caching_dw); } @@ -571,19 +847,20 @@ static void prestera_event_handlers_unregister(struct prestera_switch *sw) static int prestera_switch_set_base_mac_addr(struct prestera_switch *sw) { struct device_node *base_mac_np; - struct device_node *np; int ret; - np = of_find_compatible_node(NULL, NULL, "marvell,prestera"); - base_mac_np = of_parse_phandle(np, "base-mac-provider", 0); + if (sw->np) { + base_mac_np = of_parse_phandle(sw->np, "base-mac-provider", 0); + if (base_mac_np) { + ret = of_get_mac_address(base_mac_np, sw->base_mac); + of_node_put(base_mac_np); + } + } - ret = of_get_mac_address(base_mac_np, sw->base_mac); - if (ret) { + if (!is_valid_ether_addr(sw->base_mac) || ret) { eth_random_addr(sw->base_mac); dev_info(prestera_dev(sw), "using random base mac address\n"); } - of_node_put(base_mac_np); - of_node_put(np); return prestera_hw_switch_mac_set(sw, sw->base_mac); } @@ -1083,6 +1360,8 @@ static int prestera_switch_init(struct prestera_switch *sw) { int err; + sw->np = of_find_compatible_node(NULL, NULL, "marvell,prestera"); + err = prestera_hw_switch_init(sw); if (err) { dev_err(prestera_dev(sw), "Failed to init Switch device\n"); @@ -1183,6 +1462,7 @@ static void prestera_switch_fini(struct prestera_switch *sw) prestera_router_fini(sw); prestera_netdev_event_handler_unregister(sw); prestera_hw_switch_fini(sw); + of_node_put(sw->np); } int prestera_device_register(struct prestera_device *dev) -- 2.7.4