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![Horatiu Vultur](/assets/img/avatar_default.png)
Add support for offloading MRP in HW. Currently implement the switchdev calls 'SWITCHDEV_OBJ_ID_MRP', 'SWITCHDEV_OBJ_ID_RING_ROLE_MRP', to allow to create MRP instances and to set the role of these instances. Add DSA_NOTIFIER_MRP_ADD/DEL and DSA_NOTIFIER_MRP_ADD/DEL_RING_ROLE which calls to .port_mrp_add/del and .port_mrp_add/del_ring_role in the DSA driver for the switch. Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
990 lines
23 KiB
C
990 lines
23 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Handling of a single switch port
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*
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* Copyright (c) 2017 Savoir-faire Linux Inc.
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* Vivien Didelot <vivien.didelot@savoirfairelinux.com>
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*/
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#include <linux/if_bridge.h>
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#include <linux/notifier.h>
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#include <linux/of_mdio.h>
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#include <linux/of_net.h>
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#include "dsa_priv.h"
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/**
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* dsa_port_notify - Notify the switching fabric of changes to a port
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* @dp: port on which change occurred
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* @e: event, must be of type DSA_NOTIFIER_*
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* @v: event-specific value.
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*
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* Notify all switches in the DSA tree that this port's switch belongs to,
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* including this switch itself, of an event. Allows the other switches to
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* reconfigure themselves for cross-chip operations. Can also be used to
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* reconfigure ports without net_devices (CPU ports, DSA links) whenever
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* a user port's state changes.
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*/
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static int dsa_port_notify(const struct dsa_port *dp, unsigned long e, void *v)
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{
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return dsa_tree_notify(dp->ds->dst, e, v);
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}
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int dsa_port_set_state(struct dsa_port *dp, u8 state)
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{
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struct dsa_switch *ds = dp->ds;
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int port = dp->index;
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if (!ds->ops->port_stp_state_set)
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return -EOPNOTSUPP;
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ds->ops->port_stp_state_set(ds, port, state);
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if (ds->ops->port_fast_age) {
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/* Fast age FDB entries or flush appropriate forwarding database
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* for the given port, if we are moving it from Learning or
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* Forwarding state, to Disabled or Blocking or Listening state.
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*/
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if ((dp->stp_state == BR_STATE_LEARNING ||
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dp->stp_state == BR_STATE_FORWARDING) &&
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(state == BR_STATE_DISABLED ||
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state == BR_STATE_BLOCKING ||
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state == BR_STATE_LISTENING))
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ds->ops->port_fast_age(ds, port);
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}
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dp->stp_state = state;
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return 0;
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}
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static void dsa_port_set_state_now(struct dsa_port *dp, u8 state)
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{
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int err;
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err = dsa_port_set_state(dp, state);
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if (err)
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pr_err("DSA: failed to set STP state %u (%d)\n", state, err);
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}
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int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy)
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{
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struct dsa_switch *ds = dp->ds;
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int port = dp->index;
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int err;
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if (ds->ops->port_enable) {
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err = ds->ops->port_enable(ds, port, phy);
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if (err)
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return err;
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}
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if (!dp->bridge_dev)
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dsa_port_set_state_now(dp, BR_STATE_FORWARDING);
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if (dp->pl)
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phylink_start(dp->pl);
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return 0;
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}
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int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy)
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{
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int err;
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rtnl_lock();
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err = dsa_port_enable_rt(dp, phy);
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rtnl_unlock();
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return err;
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}
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void dsa_port_disable_rt(struct dsa_port *dp)
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{
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struct dsa_switch *ds = dp->ds;
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int port = dp->index;
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if (dp->pl)
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phylink_stop(dp->pl);
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if (!dp->bridge_dev)
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dsa_port_set_state_now(dp, BR_STATE_DISABLED);
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if (ds->ops->port_disable)
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ds->ops->port_disable(ds, port);
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}
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void dsa_port_disable(struct dsa_port *dp)
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{
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rtnl_lock();
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dsa_port_disable_rt(dp);
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rtnl_unlock();
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}
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static void dsa_port_change_brport_flags(struct dsa_port *dp,
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bool bridge_offload)
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{
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struct switchdev_brport_flags flags;
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int flag;
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flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
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if (bridge_offload)
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flags.val = flags.mask;
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else
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flags.val = flags.mask & ~BR_LEARNING;
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for_each_set_bit(flag, &flags.mask, 32) {
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struct switchdev_brport_flags tmp;
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tmp.val = flags.val & BIT(flag);
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tmp.mask = BIT(flag);
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dsa_port_bridge_flags(dp, tmp, NULL);
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}
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}
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int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br)
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{
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struct dsa_notifier_bridge_info info = {
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.tree_index = dp->ds->dst->index,
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.sw_index = dp->ds->index,
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.port = dp->index,
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.br = br,
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};
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int err;
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/* Notify the port driver to set its configurable flags in a way that
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* matches the initial settings of a bridge port.
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*/
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dsa_port_change_brport_flags(dp, true);
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/* Here the interface is already bridged. Reflect the current
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* configuration so that drivers can program their chips accordingly.
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*/
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dp->bridge_dev = br;
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err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_JOIN, &info);
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/* The bridging is rolled back on error */
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if (err) {
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dsa_port_change_brport_flags(dp, false);
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dp->bridge_dev = NULL;
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}
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return err;
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}
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void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br)
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{
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struct dsa_notifier_bridge_info info = {
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.tree_index = dp->ds->dst->index,
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.sw_index = dp->ds->index,
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.port = dp->index,
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.br = br,
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};
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int err;
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/* Here the port is already unbridged. Reflect the current configuration
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* so that drivers can program their chips accordingly.
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*/
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dp->bridge_dev = NULL;
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err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info);
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if (err)
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pr_err("DSA: failed to notify DSA_NOTIFIER_BRIDGE_LEAVE\n");
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/* Configure the port for standalone mode (no address learning,
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* flood everything).
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* The bridge only emits SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS events
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* when the user requests it through netlink or sysfs, but not
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* automatically at port join or leave, so we need to handle resetting
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* the brport flags ourselves. But we even prefer it that way, because
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* otherwise, some setups might never get the notification they need,
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* for example, when a port leaves a LAG that offloads the bridge,
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* it becomes standalone, but as far as the bridge is concerned, no
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* port ever left.
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*/
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dsa_port_change_brport_flags(dp, false);
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/* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
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* so allow it to be in BR_STATE_FORWARDING to be kept functional
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*/
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dsa_port_set_state_now(dp, BR_STATE_FORWARDING);
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}
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int dsa_port_lag_change(struct dsa_port *dp,
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struct netdev_lag_lower_state_info *linfo)
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{
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struct dsa_notifier_lag_info info = {
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.sw_index = dp->ds->index,
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.port = dp->index,
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};
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bool tx_enabled;
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if (!dp->lag_dev)
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return 0;
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/* On statically configured aggregates (e.g. loadbalance
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* without LACP) ports will always be tx_enabled, even if the
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* link is down. Thus we require both link_up and tx_enabled
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* in order to include it in the tx set.
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*/
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tx_enabled = linfo->link_up && linfo->tx_enabled;
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if (tx_enabled == dp->lag_tx_enabled)
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return 0;
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dp->lag_tx_enabled = tx_enabled;
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return dsa_port_notify(dp, DSA_NOTIFIER_LAG_CHANGE, &info);
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}
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int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag,
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struct netdev_lag_upper_info *uinfo)
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{
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struct dsa_notifier_lag_info info = {
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.sw_index = dp->ds->index,
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.port = dp->index,
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.lag = lag,
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.info = uinfo,
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};
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int err;
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dsa_lag_map(dp->ds->dst, lag);
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dp->lag_dev = lag;
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err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_JOIN, &info);
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if (err) {
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dp->lag_dev = NULL;
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dsa_lag_unmap(dp->ds->dst, lag);
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}
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return err;
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}
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void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag)
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{
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struct dsa_notifier_lag_info info = {
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.sw_index = dp->ds->index,
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.port = dp->index,
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.lag = lag,
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};
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int err;
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if (!dp->lag_dev)
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return;
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/* Port might have been part of a LAG that in turn was
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* attached to a bridge.
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*/
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if (dp->bridge_dev)
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dsa_port_bridge_leave(dp, dp->bridge_dev);
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dp->lag_tx_enabled = false;
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dp->lag_dev = NULL;
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err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info);
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if (err)
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pr_err("DSA: failed to notify DSA_NOTIFIER_LAG_LEAVE: %d\n",
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err);
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dsa_lag_unmap(dp->ds->dst, lag);
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}
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/* Must be called under rcu_read_lock() */
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static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp,
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bool vlan_filtering,
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struct netlink_ext_ack *extack)
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{
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struct dsa_switch *ds = dp->ds;
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int err, i;
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/* VLAN awareness was off, so the question is "can we turn it on".
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* We may have had 8021q uppers, those need to go. Make sure we don't
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* enter an inconsistent state: deny changing the VLAN awareness state
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* as long as we have 8021q uppers.
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*/
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if (vlan_filtering && dsa_is_user_port(ds, dp->index)) {
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struct net_device *upper_dev, *slave = dp->slave;
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struct net_device *br = dp->bridge_dev;
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struct list_head *iter;
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netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) {
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struct bridge_vlan_info br_info;
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u16 vid;
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if (!is_vlan_dev(upper_dev))
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continue;
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vid = vlan_dev_vlan_id(upper_dev);
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/* br_vlan_get_info() returns -EINVAL or -ENOENT if the
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* device, respectively the VID is not found, returning
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* 0 means success, which is a failure for us here.
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*/
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err = br_vlan_get_info(br, vid, &br_info);
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if (err == 0) {
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NL_SET_ERR_MSG_MOD(extack,
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"Must first remove VLAN uppers having VIDs also present in bridge");
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return false;
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}
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}
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}
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if (!ds->vlan_filtering_is_global)
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return true;
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/* For cases where enabling/disabling VLAN awareness is global to the
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* switch, we need to handle the case where multiple bridges span
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* different ports of the same switch device and one of them has a
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* different setting than what is being requested.
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*/
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for (i = 0; i < ds->num_ports; i++) {
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struct net_device *other_bridge;
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other_bridge = dsa_to_port(ds, i)->bridge_dev;
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if (!other_bridge)
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continue;
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/* If it's the same bridge, it also has same
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* vlan_filtering setting => no need to check
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*/
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if (other_bridge == dp->bridge_dev)
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continue;
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if (br_vlan_enabled(other_bridge) != vlan_filtering) {
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NL_SET_ERR_MSG_MOD(extack,
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"VLAN filtering is a global setting");
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return false;
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}
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}
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return true;
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}
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int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
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struct netlink_ext_ack *extack)
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{
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struct dsa_switch *ds = dp->ds;
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bool apply;
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int err;
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if (!ds->ops->port_vlan_filtering)
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return -EOPNOTSUPP;
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/* We are called from dsa_slave_switchdev_blocking_event(),
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* which is not under rcu_read_lock(), unlike
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* dsa_slave_switchdev_event().
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*/
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rcu_read_lock();
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apply = dsa_port_can_apply_vlan_filtering(dp, vlan_filtering, extack);
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rcu_read_unlock();
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if (!apply)
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return -EINVAL;
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if (dsa_port_is_vlan_filtering(dp) == vlan_filtering)
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return 0;
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err = ds->ops->port_vlan_filtering(ds, dp->index, vlan_filtering,
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extack);
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if (err)
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return err;
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if (ds->vlan_filtering_is_global)
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ds->vlan_filtering = vlan_filtering;
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else
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dp->vlan_filtering = vlan_filtering;
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return 0;
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}
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/* This enforces legacy behavior for switch drivers which assume they can't
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* receive VLAN configuration when enslaved to a bridge with vlan_filtering=0
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*/
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bool dsa_port_skip_vlan_configuration(struct dsa_port *dp)
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{
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struct dsa_switch *ds = dp->ds;
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if (!dp->bridge_dev)
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return false;
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return (!ds->configure_vlan_while_not_filtering &&
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!br_vlan_enabled(dp->bridge_dev));
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}
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int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock)
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{
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unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock);
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unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies);
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struct dsa_notifier_ageing_time_info info;
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int err;
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info.ageing_time = ageing_time;
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err = dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);
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if (err)
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return err;
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dp->ageing_time = ageing_time;
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return 0;
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}
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int dsa_port_pre_bridge_flags(const struct dsa_port *dp,
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struct switchdev_brport_flags flags,
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struct netlink_ext_ack *extack)
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{
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struct dsa_switch *ds = dp->ds;
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if (!ds->ops->port_pre_bridge_flags)
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return -EINVAL;
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return ds->ops->port_pre_bridge_flags(ds, dp->index, flags, extack);
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}
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int dsa_port_bridge_flags(const struct dsa_port *dp,
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struct switchdev_brport_flags flags,
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struct netlink_ext_ack *extack)
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{
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struct dsa_switch *ds = dp->ds;
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if (!ds->ops->port_bridge_flags)
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return -EINVAL;
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return ds->ops->port_bridge_flags(ds, dp->index, flags, extack);
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}
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int dsa_port_mrouter(struct dsa_port *dp, bool mrouter,
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struct netlink_ext_ack *extack)
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{
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struct dsa_switch *ds = dp->ds;
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if (!ds->ops->port_set_mrouter)
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return -EOPNOTSUPP;
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return ds->ops->port_set_mrouter(ds, dp->index, mrouter, extack);
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}
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int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu,
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bool propagate_upstream)
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{
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struct dsa_notifier_mtu_info info = {
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.sw_index = dp->ds->index,
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.propagate_upstream = propagate_upstream,
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.port = dp->index,
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.mtu = new_mtu,
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};
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return dsa_port_notify(dp, DSA_NOTIFIER_MTU, &info);
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}
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int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
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u16 vid)
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{
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struct dsa_notifier_fdb_info info = {
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.sw_index = dp->ds->index,
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.port = dp->index,
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.addr = addr,
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.vid = vid,
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};
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return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info);
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}
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int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
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u16 vid)
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{
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struct dsa_notifier_fdb_info info = {
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.sw_index = dp->ds->index,
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.port = dp->index,
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.addr = addr,
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.vid = vid,
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};
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return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info);
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}
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int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data)
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|
{
|
|
struct dsa_switch *ds = dp->ds;
|
|
int port = dp->index;
|
|
|
|
if (!ds->ops->port_fdb_dump)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->port_fdb_dump(ds, port, cb, data);
|
|
}
|
|
|
|
int dsa_port_mdb_add(const struct dsa_port *dp,
|
|
const struct switchdev_obj_port_mdb *mdb)
|
|
{
|
|
struct dsa_notifier_mdb_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.mdb = mdb,
|
|
};
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info);
|
|
}
|
|
|
|
int dsa_port_mdb_del(const struct dsa_port *dp,
|
|
const struct switchdev_obj_port_mdb *mdb)
|
|
{
|
|
struct dsa_notifier_mdb_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.mdb = mdb,
|
|
};
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info);
|
|
}
|
|
|
|
int dsa_port_vlan_add(struct dsa_port *dp,
|
|
const struct switchdev_obj_port_vlan *vlan,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
struct dsa_notifier_vlan_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.vlan = vlan,
|
|
.extack = extack,
|
|
};
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info);
|
|
}
|
|
|
|
int dsa_port_vlan_del(struct dsa_port *dp,
|
|
const struct switchdev_obj_port_vlan *vlan)
|
|
{
|
|
struct dsa_notifier_vlan_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.vlan = vlan,
|
|
};
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);
|
|
}
|
|
|
|
int dsa_port_mrp_add(const struct dsa_port *dp,
|
|
const struct switchdev_obj_mrp *mrp)
|
|
{
|
|
struct dsa_notifier_mrp_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.mrp = mrp,
|
|
};
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD, &info);
|
|
}
|
|
|
|
int dsa_port_mrp_del(const struct dsa_port *dp,
|
|
const struct switchdev_obj_mrp *mrp)
|
|
{
|
|
struct dsa_notifier_mrp_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.mrp = mrp,
|
|
};
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL, &info);
|
|
}
|
|
|
|
int dsa_port_mrp_add_ring_role(const struct dsa_port *dp,
|
|
const struct switchdev_obj_ring_role_mrp *mrp)
|
|
{
|
|
struct dsa_notifier_mrp_ring_role_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.mrp = mrp,
|
|
};
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD_RING_ROLE, &info);
|
|
}
|
|
|
|
int dsa_port_mrp_del_ring_role(const struct dsa_port *dp,
|
|
const struct switchdev_obj_ring_role_mrp *mrp)
|
|
{
|
|
struct dsa_notifier_mrp_ring_role_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.mrp = mrp,
|
|
};
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL_RING_ROLE, &info);
|
|
}
|
|
|
|
void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp,
|
|
const struct dsa_device_ops *tag_ops)
|
|
{
|
|
cpu_dp->filter = tag_ops->filter;
|
|
cpu_dp->rcv = tag_ops->rcv;
|
|
cpu_dp->tag_ops = tag_ops;
|
|
}
|
|
|
|
static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp)
|
|
{
|
|
struct device_node *phy_dn;
|
|
struct phy_device *phydev;
|
|
|
|
phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0);
|
|
if (!phy_dn)
|
|
return NULL;
|
|
|
|
phydev = of_phy_find_device(phy_dn);
|
|
if (!phydev) {
|
|
of_node_put(phy_dn);
|
|
return ERR_PTR(-EPROBE_DEFER);
|
|
}
|
|
|
|
of_node_put(phy_dn);
|
|
return phydev;
|
|
}
|
|
|
|
static void dsa_port_phylink_validate(struct phylink_config *config,
|
|
unsigned long *supported,
|
|
struct phylink_link_state *state)
|
|
{
|
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
if (!ds->ops->phylink_validate)
|
|
return;
|
|
|
|
ds->ops->phylink_validate(ds, dp->index, supported, state);
|
|
}
|
|
|
|
static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config *config,
|
|
struct phylink_link_state *state)
|
|
{
|
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
|
|
struct dsa_switch *ds = dp->ds;
|
|
int err;
|
|
|
|
/* Only called for inband modes */
|
|
if (!ds->ops->phylink_mac_link_state) {
|
|
state->link = 0;
|
|
return;
|
|
}
|
|
|
|
err = ds->ops->phylink_mac_link_state(ds, dp->index, state);
|
|
if (err < 0) {
|
|
dev_err(ds->dev, "p%d: phylink_mac_link_state() failed: %d\n",
|
|
dp->index, err);
|
|
state->link = 0;
|
|
}
|
|
}
|
|
|
|
static void dsa_port_phylink_mac_config(struct phylink_config *config,
|
|
unsigned int mode,
|
|
const struct phylink_link_state *state)
|
|
{
|
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
if (!ds->ops->phylink_mac_config)
|
|
return;
|
|
|
|
ds->ops->phylink_mac_config(ds, dp->index, mode, state);
|
|
}
|
|
|
|
static void dsa_port_phylink_mac_an_restart(struct phylink_config *config)
|
|
{
|
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
if (!ds->ops->phylink_mac_an_restart)
|
|
return;
|
|
|
|
ds->ops->phylink_mac_an_restart(ds, dp->index);
|
|
}
|
|
|
|
static void dsa_port_phylink_mac_link_down(struct phylink_config *config,
|
|
unsigned int mode,
|
|
phy_interface_t interface)
|
|
{
|
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
|
|
struct phy_device *phydev = NULL;
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
if (dsa_is_user_port(ds, dp->index))
|
|
phydev = dp->slave->phydev;
|
|
|
|
if (!ds->ops->phylink_mac_link_down) {
|
|
if (ds->ops->adjust_link && phydev)
|
|
ds->ops->adjust_link(ds, dp->index, phydev);
|
|
return;
|
|
}
|
|
|
|
ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface);
|
|
}
|
|
|
|
static void dsa_port_phylink_mac_link_up(struct phylink_config *config,
|
|
struct phy_device *phydev,
|
|
unsigned int mode,
|
|
phy_interface_t interface,
|
|
int speed, int duplex,
|
|
bool tx_pause, bool rx_pause)
|
|
{
|
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
if (!ds->ops->phylink_mac_link_up) {
|
|
if (ds->ops->adjust_link && phydev)
|
|
ds->ops->adjust_link(ds, dp->index, phydev);
|
|
return;
|
|
}
|
|
|
|
ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev,
|
|
speed, duplex, tx_pause, rx_pause);
|
|
}
|
|
|
|
const struct phylink_mac_ops dsa_port_phylink_mac_ops = {
|
|
.validate = dsa_port_phylink_validate,
|
|
.mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state,
|
|
.mac_config = dsa_port_phylink_mac_config,
|
|
.mac_an_restart = dsa_port_phylink_mac_an_restart,
|
|
.mac_link_down = dsa_port_phylink_mac_link_down,
|
|
.mac_link_up = dsa_port_phylink_mac_link_up,
|
|
};
|
|
|
|
static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable)
|
|
{
|
|
struct dsa_switch *ds = dp->ds;
|
|
struct phy_device *phydev;
|
|
int port = dp->index;
|
|
int err = 0;
|
|
|
|
phydev = dsa_port_get_phy_device(dp);
|
|
if (!phydev)
|
|
return 0;
|
|
|
|
if (IS_ERR(phydev))
|
|
return PTR_ERR(phydev);
|
|
|
|
if (enable) {
|
|
err = genphy_resume(phydev);
|
|
if (err < 0)
|
|
goto err_put_dev;
|
|
|
|
err = genphy_read_status(phydev);
|
|
if (err < 0)
|
|
goto err_put_dev;
|
|
} else {
|
|
err = genphy_suspend(phydev);
|
|
if (err < 0)
|
|
goto err_put_dev;
|
|
}
|
|
|
|
if (ds->ops->adjust_link)
|
|
ds->ops->adjust_link(ds, port, phydev);
|
|
|
|
dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev));
|
|
|
|
err_put_dev:
|
|
put_device(&phydev->mdio.dev);
|
|
return err;
|
|
}
|
|
|
|
static int dsa_port_fixed_link_register_of(struct dsa_port *dp)
|
|
{
|
|
struct device_node *dn = dp->dn;
|
|
struct dsa_switch *ds = dp->ds;
|
|
struct phy_device *phydev;
|
|
int port = dp->index;
|
|
phy_interface_t mode;
|
|
int err;
|
|
|
|
err = of_phy_register_fixed_link(dn);
|
|
if (err) {
|
|
dev_err(ds->dev,
|
|
"failed to register the fixed PHY of port %d\n",
|
|
port);
|
|
return err;
|
|
}
|
|
|
|
phydev = of_phy_find_device(dn);
|
|
|
|
err = of_get_phy_mode(dn, &mode);
|
|
if (err)
|
|
mode = PHY_INTERFACE_MODE_NA;
|
|
phydev->interface = mode;
|
|
|
|
genphy_read_status(phydev);
|
|
|
|
if (ds->ops->adjust_link)
|
|
ds->ops->adjust_link(ds, port, phydev);
|
|
|
|
put_device(&phydev->mdio.dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dsa_port_phylink_register(struct dsa_port *dp)
|
|
{
|
|
struct dsa_switch *ds = dp->ds;
|
|
struct device_node *port_dn = dp->dn;
|
|
phy_interface_t mode;
|
|
int err;
|
|
|
|
err = of_get_phy_mode(port_dn, &mode);
|
|
if (err)
|
|
mode = PHY_INTERFACE_MODE_NA;
|
|
|
|
dp->pl_config.dev = ds->dev;
|
|
dp->pl_config.type = PHYLINK_DEV;
|
|
dp->pl_config.pcs_poll = ds->pcs_poll;
|
|
|
|
dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn),
|
|
mode, &dsa_port_phylink_mac_ops);
|
|
if (IS_ERR(dp->pl)) {
|
|
pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp->pl));
|
|
return PTR_ERR(dp->pl);
|
|
}
|
|
|
|
err = phylink_of_phy_connect(dp->pl, port_dn, 0);
|
|
if (err && err != -ENODEV) {
|
|
pr_err("could not attach to PHY: %d\n", err);
|
|
goto err_phy_connect;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_phy_connect:
|
|
phylink_destroy(dp->pl);
|
|
return err;
|
|
}
|
|
|
|
int dsa_port_link_register_of(struct dsa_port *dp)
|
|
{
|
|
struct dsa_switch *ds = dp->ds;
|
|
struct device_node *phy_np;
|
|
int port = dp->index;
|
|
|
|
if (!ds->ops->adjust_link) {
|
|
phy_np = of_parse_phandle(dp->dn, "phy-handle", 0);
|
|
if (of_phy_is_fixed_link(dp->dn) || phy_np) {
|
|
if (ds->ops->phylink_mac_link_down)
|
|
ds->ops->phylink_mac_link_down(ds, port,
|
|
MLO_AN_FIXED, PHY_INTERFACE_MODE_NA);
|
|
return dsa_port_phylink_register(dp);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
dev_warn(ds->dev,
|
|
"Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n");
|
|
|
|
if (of_phy_is_fixed_link(dp->dn))
|
|
return dsa_port_fixed_link_register_of(dp);
|
|
else
|
|
return dsa_port_setup_phy_of(dp, true);
|
|
}
|
|
|
|
void dsa_port_link_unregister_of(struct dsa_port *dp)
|
|
{
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
if (!ds->ops->adjust_link && dp->pl) {
|
|
rtnl_lock();
|
|
phylink_disconnect_phy(dp->pl);
|
|
rtnl_unlock();
|
|
phylink_destroy(dp->pl);
|
|
dp->pl = NULL;
|
|
return;
|
|
}
|
|
|
|
if (of_phy_is_fixed_link(dp->dn))
|
|
of_phy_deregister_fixed_link(dp->dn);
|
|
else
|
|
dsa_port_setup_phy_of(dp, false);
|
|
}
|
|
|
|
int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data)
|
|
{
|
|
struct phy_device *phydev;
|
|
int ret = -EOPNOTSUPP;
|
|
|
|
if (of_phy_is_fixed_link(dp->dn))
|
|
return ret;
|
|
|
|
phydev = dsa_port_get_phy_device(dp);
|
|
if (IS_ERR_OR_NULL(phydev))
|
|
return ret;
|
|
|
|
ret = phy_ethtool_get_strings(phydev, data);
|
|
put_device(&phydev->mdio.dev);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings);
|
|
|
|
int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data)
|
|
{
|
|
struct phy_device *phydev;
|
|
int ret = -EOPNOTSUPP;
|
|
|
|
if (of_phy_is_fixed_link(dp->dn))
|
|
return ret;
|
|
|
|
phydev = dsa_port_get_phy_device(dp);
|
|
if (IS_ERR_OR_NULL(phydev))
|
|
return ret;
|
|
|
|
ret = phy_ethtool_get_stats(phydev, NULL, data);
|
|
put_device(&phydev->mdio.dev);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats);
|
|
|
|
int dsa_port_get_phy_sset_count(struct dsa_port *dp)
|
|
{
|
|
struct phy_device *phydev;
|
|
int ret = -EOPNOTSUPP;
|
|
|
|
if (of_phy_is_fixed_link(dp->dn))
|
|
return ret;
|
|
|
|
phydev = dsa_port_get_phy_device(dp);
|
|
if (IS_ERR_OR_NULL(phydev))
|
|
return ret;
|
|
|
|
ret = phy_ethtool_get_sset_count(phydev);
|
|
put_device(&phydev->mdio.dev);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count);
|
|
|
|
int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr)
|
|
{
|
|
struct dsa_notifier_hsr_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.hsr = hsr,
|
|
};
|
|
int err;
|
|
|
|
dp->hsr_dev = hsr;
|
|
|
|
err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_JOIN, &info);
|
|
if (err)
|
|
dp->hsr_dev = NULL;
|
|
|
|
return err;
|
|
}
|
|
|
|
void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr)
|
|
{
|
|
struct dsa_notifier_hsr_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.hsr = hsr,
|
|
};
|
|
int err;
|
|
|
|
dp->hsr_dev = NULL;
|
|
|
|
err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_LEAVE, &info);
|
|
if (err)
|
|
pr_err("DSA: failed to notify DSA_NOTIFIER_HSR_LEAVE\n");
|
|
}
|