// SPDX-License-Identifier: GPL-2.0
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/*
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* DPAA2 Ethernet Switch driver
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*
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* Copyright 2014-2016 Freescale Semiconductor Inc.
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* Copyright 2017-2018 NXP
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*
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*/
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/msi.h>
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#include <linux/kthread.h>
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#include <linux/workqueue.h>
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#include <linux/fsl/mc.h>
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#include "ethsw.h"
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/* Minimal supported DPSW version */
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#define DPSW_MIN_VER_MAJOR 8
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#define DPSW_MIN_VER_MINOR 1
|
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#define DEFAULT_VLAN_ID 1
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static int dpaa2_switch_add_vlan(struct ethsw_core *ethsw, u16 vid)
|
{
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int err;
|
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struct dpsw_vlan_cfg vcfg = {
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.fdb_id = 0,
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};
|
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err = dpsw_vlan_add(ethsw->mc_io, 0,
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ethsw->dpsw_handle, vid, &vcfg);
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if (err) {
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dev_err(ethsw->dev, "dpsw_vlan_add err %d\n", err);
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return err;
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}
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ethsw->vlans[vid] = ETHSW_VLAN_MEMBER;
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return 0;
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}
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static bool dpaa2_switch_port_is_up(struct ethsw_port_priv *port_priv)
|
{
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struct net_device *netdev = port_priv->netdev;
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struct dpsw_link_state state;
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int err;
|
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err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0,
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port_priv->ethsw_data->dpsw_handle,
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port_priv->idx, &state);
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if (err) {
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netdev_err(netdev, "dpsw_if_get_link_state() err %d\n", err);
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return true;
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}
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WARN_ONCE(state.up > 1, "Garbage read into link_state");
|
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return state.up ? true : false;
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}
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static int dpaa2_switch_port_set_pvid(struct ethsw_port_priv *port_priv, u16 pvid)
|
{
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struct ethsw_core *ethsw = port_priv->ethsw_data;
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struct net_device *netdev = port_priv->netdev;
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struct dpsw_tci_cfg tci_cfg = { 0 };
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bool up;
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int err, ret;
|
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err = dpsw_if_get_tci(ethsw->mc_io, 0, ethsw->dpsw_handle,
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port_priv->idx, &tci_cfg);
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if (err) {
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netdev_err(netdev, "dpsw_if_get_tci err %d\n", err);
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return err;
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}
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tci_cfg.vlan_id = pvid;
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/* Interface needs to be down to change PVID */
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up = dpaa2_switch_port_is_up(port_priv);
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if (up) {
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err = dpsw_if_disable(ethsw->mc_io, 0,
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ethsw->dpsw_handle,
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port_priv->idx);
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if (err) {
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netdev_err(netdev, "dpsw_if_disable err %d\n", err);
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return err;
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}
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}
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err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle,
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port_priv->idx, &tci_cfg);
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if (err) {
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netdev_err(netdev, "dpsw_if_set_tci err %d\n", err);
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goto set_tci_error;
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}
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/* Delete previous PVID info and mark the new one */
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port_priv->vlans[port_priv->pvid] &= ~ETHSW_VLAN_PVID;
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port_priv->vlans[pvid] |= ETHSW_VLAN_PVID;
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port_priv->pvid = pvid;
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set_tci_error:
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if (up) {
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ret = dpsw_if_enable(ethsw->mc_io, 0,
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ethsw->dpsw_handle,
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port_priv->idx);
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if (ret) {
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netdev_err(netdev, "dpsw_if_enable err %d\n", ret);
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return ret;
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}
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}
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return err;
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}
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static int dpaa2_switch_port_add_vlan(struct ethsw_port_priv *port_priv,
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u16 vid, u16 flags)
|
{
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struct ethsw_core *ethsw = port_priv->ethsw_data;
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struct net_device *netdev = port_priv->netdev;
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struct dpsw_vlan_if_cfg vcfg;
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int err;
|
|
if (port_priv->vlans[vid]) {
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netdev_warn(netdev, "VLAN %d already configured\n", vid);
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return -EEXIST;
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}
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vcfg.num_ifs = 1;
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vcfg.if_id[0] = port_priv->idx;
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err = dpsw_vlan_add_if(ethsw->mc_io, 0, ethsw->dpsw_handle, vid, &vcfg);
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if (err) {
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netdev_err(netdev, "dpsw_vlan_add_if err %d\n", err);
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return err;
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}
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port_priv->vlans[vid] = ETHSW_VLAN_MEMBER;
|
|
if (flags & BRIDGE_VLAN_INFO_UNTAGGED) {
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err = dpsw_vlan_add_if_untagged(ethsw->mc_io, 0,
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ethsw->dpsw_handle,
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vid, &vcfg);
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if (err) {
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netdev_err(netdev,
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"dpsw_vlan_add_if_untagged err %d\n", err);
|
return err;
|
}
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port_priv->vlans[vid] |= ETHSW_VLAN_UNTAGGED;
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}
|
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if (flags & BRIDGE_VLAN_INFO_PVID) {
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err = dpaa2_switch_port_set_pvid(port_priv, vid);
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if (err)
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return err;
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}
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return 0;
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}
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static int dpaa2_switch_set_learning(struct ethsw_core *ethsw, bool enable)
|
{
|
enum dpsw_fdb_learning_mode learn_mode;
|
int err;
|
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if (enable)
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learn_mode = DPSW_FDB_LEARNING_MODE_HW;
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else
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learn_mode = DPSW_FDB_LEARNING_MODE_DIS;
|
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err = dpsw_fdb_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle, 0,
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learn_mode);
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if (err) {
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dev_err(ethsw->dev, "dpsw_fdb_set_learning_mode err %d\n", err);
|
return err;
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}
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ethsw->learning = enable;
|
|
return 0;
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}
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static int dpaa2_switch_port_set_flood(struct ethsw_port_priv *port_priv, bool enable)
|
{
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int err;
|
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err = dpsw_if_set_flooding(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
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port_priv->idx, enable);
|
if (err) {
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netdev_err(port_priv->netdev,
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"dpsw_if_set_flooding err %d\n", err);
|
return err;
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}
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port_priv->flood = enable;
|
|
return 0;
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}
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static int dpaa2_switch_port_set_stp_state(struct ethsw_port_priv *port_priv, u8 state)
|
{
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struct dpsw_stp_cfg stp_cfg = {
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.state = state,
|
};
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int err;
|
u16 vid;
|
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if (!netif_running(port_priv->netdev) || state == port_priv->stp_state)
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return 0; /* Nothing to do */
|
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for (vid = 0; vid <= VLAN_VID_MASK; vid++) {
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if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) {
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stp_cfg.vlan_id = vid;
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err = dpsw_if_set_stp(port_priv->ethsw_data->mc_io, 0,
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port_priv->ethsw_data->dpsw_handle,
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port_priv->idx, &stp_cfg);
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if (err) {
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netdev_err(port_priv->netdev,
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"dpsw_if_set_stp err %d\n", err);
|
return err;
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}
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}
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}
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port_priv->stp_state = state;
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|
return 0;
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}
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static int dpaa2_switch_dellink(struct ethsw_core *ethsw, u16 vid)
|
{
|
struct ethsw_port_priv *ppriv_local = NULL;
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int i, err;
|
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if (!ethsw->vlans[vid])
|
return -ENOENT;
|
|
err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, vid);
|
if (err) {
|
dev_err(ethsw->dev, "dpsw_vlan_remove err %d\n", err);
|
return err;
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}
|
ethsw->vlans[vid] = 0;
|
|
for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
|
ppriv_local = ethsw->ports[i];
|
ppriv_local->vlans[vid] = 0;
|
}
|
|
return 0;
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}
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|
static int dpaa2_switch_port_fdb_add_uc(struct ethsw_port_priv *port_priv,
|
const unsigned char *addr)
|
{
|
struct dpsw_fdb_unicast_cfg entry = {0};
|
int err;
|
|
entry.if_egress = port_priv->idx;
|
entry.type = DPSW_FDB_ENTRY_STATIC;
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ether_addr_copy(entry.mac_addr, addr);
|
|
err = dpsw_fdb_add_unicast(port_priv->ethsw_data->mc_io, 0,
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port_priv->ethsw_data->dpsw_handle,
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0, &entry);
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if (err)
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netdev_err(port_priv->netdev,
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"dpsw_fdb_add_unicast err %d\n", err);
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return err;
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}
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static int dpaa2_switch_port_fdb_del_uc(struct ethsw_port_priv *port_priv,
|
const unsigned char *addr)
|
{
|
struct dpsw_fdb_unicast_cfg entry = {0};
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int err;
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entry.if_egress = port_priv->idx;
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entry.type = DPSW_FDB_ENTRY_STATIC;
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ether_addr_copy(entry.mac_addr, addr);
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err = dpsw_fdb_remove_unicast(port_priv->ethsw_data->mc_io, 0,
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port_priv->ethsw_data->dpsw_handle,
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0, &entry);
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/* Silently discard error for calling multiple times the del command */
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if (err && err != -ENXIO)
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netdev_err(port_priv->netdev,
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"dpsw_fdb_remove_unicast err %d\n", err);
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return err;
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}
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static int dpaa2_switch_port_fdb_add_mc(struct ethsw_port_priv *port_priv,
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const unsigned char *addr)
|
{
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struct dpsw_fdb_multicast_cfg entry = {0};
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int err;
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ether_addr_copy(entry.mac_addr, addr);
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entry.type = DPSW_FDB_ENTRY_STATIC;
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entry.num_ifs = 1;
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entry.if_id[0] = port_priv->idx;
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err = dpsw_fdb_add_multicast(port_priv->ethsw_data->mc_io, 0,
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port_priv->ethsw_data->dpsw_handle,
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0, &entry);
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/* Silently discard error for calling multiple times the add command */
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if (err && err != -ENXIO)
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netdev_err(port_priv->netdev, "dpsw_fdb_add_multicast err %d\n",
|
err);
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return err;
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}
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static int dpaa2_switch_port_fdb_del_mc(struct ethsw_port_priv *port_priv,
|
const unsigned char *addr)
|
{
|
struct dpsw_fdb_multicast_cfg entry = {0};
|
int err;
|
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ether_addr_copy(entry.mac_addr, addr);
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entry.type = DPSW_FDB_ENTRY_STATIC;
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entry.num_ifs = 1;
|
entry.if_id[0] = port_priv->idx;
|
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err = dpsw_fdb_remove_multicast(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
|
0, &entry);
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/* Silently discard error for calling multiple times the del command */
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if (err && err != -ENAVAIL)
|
netdev_err(port_priv->netdev,
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"dpsw_fdb_remove_multicast err %d\n", err);
|
return err;
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}
|
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static int dpaa2_switch_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
|
struct net_device *dev, const unsigned char *addr,
|
u16 vid, u16 flags,
|
struct netlink_ext_ack *extack)
|
{
|
if (is_unicast_ether_addr(addr))
|
return dpaa2_switch_port_fdb_add_uc(netdev_priv(dev),
|
addr);
|
else
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return dpaa2_switch_port_fdb_add_mc(netdev_priv(dev),
|
addr);
|
}
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static int dpaa2_switch_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
|
struct net_device *dev,
|
const unsigned char *addr, u16 vid)
|
{
|
if (is_unicast_ether_addr(addr))
|
return dpaa2_switch_port_fdb_del_uc(netdev_priv(dev),
|
addr);
|
else
|
return dpaa2_switch_port_fdb_del_mc(netdev_priv(dev),
|
addr);
|
}
|
|
static void dpaa2_switch_port_get_stats(struct net_device *netdev,
|
struct rtnl_link_stats64 *stats)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
u64 tmp;
|
int err;
|
|
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
|
port_priv->idx,
|
DPSW_CNT_ING_FRAME, &stats->rx_packets);
|
if (err)
|
goto error;
|
|
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
|
port_priv->idx,
|
DPSW_CNT_EGR_FRAME, &stats->tx_packets);
|
if (err)
|
goto error;
|
|
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
|
port_priv->idx,
|
DPSW_CNT_ING_BYTE, &stats->rx_bytes);
|
if (err)
|
goto error;
|
|
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
|
port_priv->idx,
|
DPSW_CNT_EGR_BYTE, &stats->tx_bytes);
|
if (err)
|
goto error;
|
|
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
|
port_priv->idx,
|
DPSW_CNT_ING_FRAME_DISCARD,
|
&stats->rx_dropped);
|
if (err)
|
goto error;
|
|
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
|
port_priv->idx,
|
DPSW_CNT_ING_FLTR_FRAME,
|
&tmp);
|
if (err)
|
goto error;
|
stats->rx_dropped += tmp;
|
|
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
|
port_priv->idx,
|
DPSW_CNT_EGR_FRAME_DISCARD,
|
&stats->tx_dropped);
|
if (err)
|
goto error;
|
|
return;
|
|
error:
|
netdev_err(netdev, "dpsw_if_get_counter err %d\n", err);
|
}
|
|
static bool dpaa2_switch_port_has_offload_stats(const struct net_device *netdev,
|
int attr_id)
|
{
|
return (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT);
|
}
|
|
static int dpaa2_switch_port_get_offload_stats(int attr_id,
|
const struct net_device *netdev,
|
void *sp)
|
{
|
switch (attr_id) {
|
case IFLA_OFFLOAD_XSTATS_CPU_HIT:
|
dpaa2_switch_port_get_stats((struct net_device *)netdev, sp);
|
return 0;
|
}
|
|
return -EINVAL;
|
}
|
|
static int dpaa2_switch_port_change_mtu(struct net_device *netdev, int mtu)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
int err;
|
|
err = dpsw_if_set_max_frame_length(port_priv->ethsw_data->mc_io,
|
0,
|
port_priv->ethsw_data->dpsw_handle,
|
port_priv->idx,
|
(u16)ETHSW_L2_MAX_FRM(mtu));
|
if (err) {
|
netdev_err(netdev,
|
"dpsw_if_set_max_frame_length() err %d\n", err);
|
return err;
|
}
|
|
netdev->mtu = mtu;
|
return 0;
|
}
|
|
static int dpaa2_switch_port_carrier_state_sync(struct net_device *netdev)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
struct dpsw_link_state state;
|
int err;
|
|
/* Interrupts are received even though no one issued an 'ifconfig up'
|
* on the switch interface. Ignore these link state update interrupts
|
*/
|
if (!netif_running(netdev))
|
return 0;
|
|
err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
|
port_priv->idx, &state);
|
if (err) {
|
netdev_err(netdev, "dpsw_if_get_link_state() err %d\n", err);
|
return err;
|
}
|
|
WARN_ONCE(state.up > 1, "Garbage read into link_state");
|
|
if (state.up != port_priv->link_state) {
|
if (state.up)
|
netif_carrier_on(netdev);
|
else
|
netif_carrier_off(netdev);
|
port_priv->link_state = state.up;
|
}
|
|
return 0;
|
}
|
|
static int dpaa2_switch_port_open(struct net_device *netdev)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
int err;
|
|
/* No need to allow Tx as control interface is disabled */
|
netif_tx_stop_all_queues(netdev);
|
|
/* Explicitly set carrier off, otherwise
|
* netif_carrier_ok() will return true and cause 'ip link show'
|
* to report the LOWER_UP flag, even though the link
|
* notification wasn't even received.
|
*/
|
netif_carrier_off(netdev);
|
|
err = dpsw_if_enable(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
|
port_priv->idx);
|
if (err) {
|
netdev_err(netdev, "dpsw_if_enable err %d\n", err);
|
return err;
|
}
|
|
/* sync carrier state */
|
err = dpaa2_switch_port_carrier_state_sync(netdev);
|
if (err) {
|
netdev_err(netdev,
|
"dpaa2_switch_port_carrier_state_sync err %d\n", err);
|
goto err_carrier_sync;
|
}
|
|
return 0;
|
|
err_carrier_sync:
|
dpsw_if_disable(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
|
port_priv->idx);
|
return err;
|
}
|
|
static int dpaa2_switch_port_stop(struct net_device *netdev)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
int err;
|
|
err = dpsw_if_disable(port_priv->ethsw_data->mc_io, 0,
|
port_priv->ethsw_data->dpsw_handle,
|
port_priv->idx);
|
if (err) {
|
netdev_err(netdev, "dpsw_if_disable err %d\n", err);
|
return err;
|
}
|
|
return 0;
|
}
|
|
static netdev_tx_t dpaa2_switch_port_dropframe(struct sk_buff *skb,
|
struct net_device *netdev)
|
{
|
/* we don't support I/O for now, drop the frame */
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
}
|
|
static int dpaa2_switch_port_parent_id(struct net_device *dev,
|
struct netdev_phys_item_id *ppid)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(dev);
|
|
ppid->id_len = 1;
|
ppid->id[0] = port_priv->ethsw_data->dev_id;
|
|
return 0;
|
}
|
|
static int dpaa2_switch_port_get_phys_name(struct net_device *netdev, char *name,
|
size_t len)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
int err;
|
|
err = snprintf(name, len, "p%d", port_priv->idx);
|
if (err >= len)
|
return -EINVAL;
|
|
return 0;
|
}
|
|
struct ethsw_dump_ctx {
|
struct net_device *dev;
|
struct sk_buff *skb;
|
struct netlink_callback *cb;
|
int idx;
|
};
|
|
static int dpaa2_switch_fdb_dump_nl(struct fdb_dump_entry *entry,
|
struct ethsw_dump_ctx *dump)
|
{
|
int is_dynamic = entry->type & DPSW_FDB_ENTRY_DINAMIC;
|
u32 portid = NETLINK_CB(dump->cb->skb).portid;
|
u32 seq = dump->cb->nlh->nlmsg_seq;
|
struct nlmsghdr *nlh;
|
struct ndmsg *ndm;
|
|
if (dump->idx < dump->cb->args[2])
|
goto skip;
|
|
nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
|
sizeof(*ndm), NLM_F_MULTI);
|
if (!nlh)
|
return -EMSGSIZE;
|
|
ndm = nlmsg_data(nlh);
|
ndm->ndm_family = AF_BRIDGE;
|
ndm->ndm_pad1 = 0;
|
ndm->ndm_pad2 = 0;
|
ndm->ndm_flags = NTF_SELF;
|
ndm->ndm_type = 0;
|
ndm->ndm_ifindex = dump->dev->ifindex;
|
ndm->ndm_state = is_dynamic ? NUD_REACHABLE : NUD_NOARP;
|
|
if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, entry->mac_addr))
|
goto nla_put_failure;
|
|
nlmsg_end(dump->skb, nlh);
|
|
skip:
|
dump->idx++;
|
return 0;
|
|
nla_put_failure:
|
nlmsg_cancel(dump->skb, nlh);
|
return -EMSGSIZE;
|
}
|
|
static int dpaa2_switch_port_fdb_valid_entry(struct fdb_dump_entry *entry,
|
struct ethsw_port_priv *port_priv)
|
{
|
int idx = port_priv->idx;
|
int valid;
|
|
if (entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST)
|
valid = entry->if_info == port_priv->idx;
|
else
|
valid = entry->if_mask[idx / 8] & BIT(idx % 8);
|
|
return valid;
|
}
|
|
static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
|
struct net_device *net_dev,
|
struct net_device *filter_dev, int *idx)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(net_dev);
|
struct ethsw_core *ethsw = port_priv->ethsw_data;
|
struct device *dev = net_dev->dev.parent;
|
struct fdb_dump_entry *fdb_entries;
|
struct fdb_dump_entry fdb_entry;
|
struct ethsw_dump_ctx dump = {
|
.dev = net_dev,
|
.skb = skb,
|
.cb = cb,
|
.idx = *idx,
|
};
|
dma_addr_t fdb_dump_iova;
|
u16 num_fdb_entries;
|
u32 fdb_dump_size;
|
int err = 0, i;
|
u8 *dma_mem;
|
|
fdb_dump_size = ethsw->sw_attr.max_fdb_entries * sizeof(fdb_entry);
|
dma_mem = kzalloc(fdb_dump_size, GFP_KERNEL);
|
if (!dma_mem)
|
return -ENOMEM;
|
|
fdb_dump_iova = dma_map_single(dev, dma_mem, fdb_dump_size,
|
DMA_FROM_DEVICE);
|
if (dma_mapping_error(dev, fdb_dump_iova)) {
|
netdev_err(net_dev, "dma_map_single() failed\n");
|
err = -ENOMEM;
|
goto err_map;
|
}
|
|
err = dpsw_fdb_dump(ethsw->mc_io, 0, ethsw->dpsw_handle, 0,
|
fdb_dump_iova, fdb_dump_size, &num_fdb_entries);
|
if (err) {
|
netdev_err(net_dev, "dpsw_fdb_dump() = %d\n", err);
|
goto err_dump;
|
}
|
|
dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_FROM_DEVICE);
|
|
fdb_entries = (struct fdb_dump_entry *)dma_mem;
|
for (i = 0; i < num_fdb_entries; i++) {
|
fdb_entry = fdb_entries[i];
|
|
if (!dpaa2_switch_port_fdb_valid_entry(&fdb_entry, port_priv))
|
continue;
|
|
err = dpaa2_switch_fdb_dump_nl(&fdb_entry, &dump);
|
if (err)
|
goto end;
|
}
|
|
end:
|
*idx = dump.idx;
|
|
kfree(dma_mem);
|
|
return 0;
|
|
err_dump:
|
dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_TO_DEVICE);
|
err_map:
|
kfree(dma_mem);
|
return err;
|
}
|
|
static int dpaa2_switch_port_set_mac_addr(struct ethsw_port_priv *port_priv)
|
{
|
struct ethsw_core *ethsw = port_priv->ethsw_data;
|
struct net_device *net_dev = port_priv->netdev;
|
struct device *dev = net_dev->dev.parent;
|
u8 mac_addr[ETH_ALEN];
|
int err;
|
|
if (!(ethsw->features & ETHSW_FEATURE_MAC_ADDR))
|
return 0;
|
|
/* Get firmware address, if any */
|
err = dpsw_if_get_port_mac_addr(ethsw->mc_io, 0, ethsw->dpsw_handle,
|
port_priv->idx, mac_addr);
|
if (err) {
|
dev_err(dev, "dpsw_if_get_port_mac_addr() failed\n");
|
return err;
|
}
|
|
/* First check if firmware has any address configured by bootloader */
|
if (!is_zero_ether_addr(mac_addr)) {
|
memcpy(net_dev->dev_addr, mac_addr, net_dev->addr_len);
|
} else {
|
/* No MAC address configured, fill in net_dev->dev_addr
|
* with a random one
|
*/
|
eth_hw_addr_random(net_dev);
|
dev_dbg_once(dev, "device(s) have all-zero hwaddr, replaced with random\n");
|
|
/* Override NET_ADDR_RANDOM set by eth_hw_addr_random(); for all
|
* practical purposes, this will be our "permanent" mac address,
|
* at least until the next reboot. This move will also permit
|
* register_netdevice() to properly fill up net_dev->perm_addr.
|
*/
|
net_dev->addr_assign_type = NET_ADDR_PERM;
|
}
|
|
return 0;
|
}
|
|
static const struct net_device_ops dpaa2_switch_port_ops = {
|
.ndo_open = dpaa2_switch_port_open,
|
.ndo_stop = dpaa2_switch_port_stop,
|
|
.ndo_set_mac_address = eth_mac_addr,
|
.ndo_get_stats64 = dpaa2_switch_port_get_stats,
|
.ndo_change_mtu = dpaa2_switch_port_change_mtu,
|
.ndo_has_offload_stats = dpaa2_switch_port_has_offload_stats,
|
.ndo_get_offload_stats = dpaa2_switch_port_get_offload_stats,
|
.ndo_fdb_add = dpaa2_switch_port_fdb_add,
|
.ndo_fdb_del = dpaa2_switch_port_fdb_del,
|
.ndo_fdb_dump = dpaa2_switch_port_fdb_dump,
|
|
.ndo_start_xmit = dpaa2_switch_port_dropframe,
|
.ndo_get_port_parent_id = dpaa2_switch_port_parent_id,
|
.ndo_get_phys_port_name = dpaa2_switch_port_get_phys_name,
|
};
|
|
static bool dpaa2_switch_port_dev_check(const struct net_device *netdev,
|
struct notifier_block *nb)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
|
if (netdev->netdev_ops == &dpaa2_switch_port_ops &&
|
(!nb || &port_priv->ethsw_data->port_nb == nb ||
|
&port_priv->ethsw_data->port_switchdev_nb == nb ||
|
&port_priv->ethsw_data->port_switchdevb_nb == nb))
|
return true;
|
|
return false;
|
}
|
|
static void dpaa2_switch_links_state_update(struct ethsw_core *ethsw)
|
{
|
int i;
|
|
for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
|
dpaa2_switch_port_carrier_state_sync(ethsw->ports[i]->netdev);
|
dpaa2_switch_port_set_mac_addr(ethsw->ports[i]);
|
}
|
}
|
|
static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg)
|
{
|
struct device *dev = (struct device *)arg;
|
struct ethsw_core *ethsw = dev_get_drvdata(dev);
|
|
/* Mask the events and the if_id reserved bits to be cleared on read */
|
u32 status = DPSW_IRQ_EVENT_LINK_CHANGED | 0xFFFF0000;
|
int err;
|
|
err = dpsw_get_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle,
|
DPSW_IRQ_INDEX_IF, &status);
|
if (err) {
|
dev_err(dev, "Can't get irq status (err %d)\n", err);
|
|
err = dpsw_clear_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle,
|
DPSW_IRQ_INDEX_IF, 0xFFFFFFFF);
|
if (err)
|
dev_err(dev, "Can't clear irq status (err %d)\n", err);
|
goto out;
|
}
|
|
if (status & DPSW_IRQ_EVENT_LINK_CHANGED)
|
dpaa2_switch_links_state_update(ethsw);
|
|
out:
|
return IRQ_HANDLED;
|
}
|
|
static int dpaa2_switch_setup_irqs(struct fsl_mc_device *sw_dev)
|
{
|
struct device *dev = &sw_dev->dev;
|
struct ethsw_core *ethsw = dev_get_drvdata(dev);
|
u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED;
|
struct fsl_mc_device_irq *irq;
|
int err;
|
|
err = fsl_mc_allocate_irqs(sw_dev);
|
if (err) {
|
dev_err(dev, "MC irqs allocation failed\n");
|
return err;
|
}
|
|
if (WARN_ON(sw_dev->obj_desc.irq_count != DPSW_IRQ_NUM)) {
|
err = -EINVAL;
|
goto free_irq;
|
}
|
|
err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle,
|
DPSW_IRQ_INDEX_IF, 0);
|
if (err) {
|
dev_err(dev, "dpsw_set_irq_enable err %d\n", err);
|
goto free_irq;
|
}
|
|
irq = sw_dev->irqs[DPSW_IRQ_INDEX_IF];
|
|
err = devm_request_threaded_irq(dev, irq->msi_desc->irq,
|
NULL,
|
dpaa2_switch_irq0_handler_thread,
|
IRQF_NO_SUSPEND | IRQF_ONESHOT,
|
dev_name(dev), dev);
|
if (err) {
|
dev_err(dev, "devm_request_threaded_irq(): %d\n", err);
|
goto free_irq;
|
}
|
|
err = dpsw_set_irq_mask(ethsw->mc_io, 0, ethsw->dpsw_handle,
|
DPSW_IRQ_INDEX_IF, mask);
|
if (err) {
|
dev_err(dev, "dpsw_set_irq_mask(): %d\n", err);
|
goto free_devm_irq;
|
}
|
|
err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle,
|
DPSW_IRQ_INDEX_IF, 1);
|
if (err) {
|
dev_err(dev, "dpsw_set_irq_enable(): %d\n", err);
|
goto free_devm_irq;
|
}
|
|
return 0;
|
|
free_devm_irq:
|
devm_free_irq(dev, irq->msi_desc->irq, dev);
|
free_irq:
|
fsl_mc_free_irqs(sw_dev);
|
return err;
|
}
|
|
static void dpaa2_switch_teardown_irqs(struct fsl_mc_device *sw_dev)
|
{
|
struct device *dev = &sw_dev->dev;
|
struct ethsw_core *ethsw = dev_get_drvdata(dev);
|
int err;
|
|
err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle,
|
DPSW_IRQ_INDEX_IF, 0);
|
if (err)
|
dev_err(dev, "dpsw_set_irq_enable err %d\n", err);
|
|
fsl_mc_free_irqs(sw_dev);
|
}
|
|
static int dpaa2_switch_port_attr_stp_state_set(struct net_device *netdev,
|
struct switchdev_trans *trans,
|
u8 state)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
|
if (switchdev_trans_ph_prepare(trans))
|
return 0;
|
|
return dpaa2_switch_port_set_stp_state(port_priv, state);
|
}
|
|
static int dpaa2_switch_port_attr_br_flags_pre_set(struct net_device *netdev,
|
struct switchdev_trans *trans,
|
unsigned long flags)
|
{
|
if (flags & ~(BR_LEARNING | BR_FLOOD))
|
return -EINVAL;
|
|
return 0;
|
}
|
|
static int dpaa2_switch_port_attr_br_flags_set(struct net_device *netdev,
|
struct switchdev_trans *trans,
|
unsigned long flags)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
int err = 0;
|
|
if (switchdev_trans_ph_prepare(trans))
|
return 0;
|
|
/* Learning is enabled per switch */
|
err = dpaa2_switch_set_learning(port_priv->ethsw_data,
|
!!(flags & BR_LEARNING));
|
if (err)
|
goto exit;
|
|
err = dpaa2_switch_port_set_flood(port_priv, !!(flags & BR_FLOOD));
|
|
exit:
|
return err;
|
}
|
|
static int dpaa2_switch_port_attr_set(struct net_device *netdev,
|
const struct switchdev_attr *attr,
|
struct switchdev_trans *trans)
|
{
|
int err = 0;
|
|
switch (attr->id) {
|
case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
|
err = dpaa2_switch_port_attr_stp_state_set(netdev, trans,
|
attr->u.stp_state);
|
break;
|
case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
|
err = dpaa2_switch_port_attr_br_flags_pre_set(netdev, trans,
|
attr->u.brport_flags);
|
break;
|
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
|
err = dpaa2_switch_port_attr_br_flags_set(netdev, trans,
|
attr->u.brport_flags);
|
break;
|
case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
|
/* VLANs are supported by default */
|
break;
|
default:
|
err = -EOPNOTSUPP;
|
break;
|
}
|
|
return err;
|
}
|
|
static int dpaa2_switch_port_vlans_add(struct net_device *netdev,
|
const struct switchdev_obj_port_vlan *vlan,
|
struct switchdev_trans *trans)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
struct ethsw_core *ethsw = port_priv->ethsw_data;
|
struct dpsw_attr *attr = ðsw->sw_attr;
|
int vid, err = 0, new_vlans = 0;
|
|
if (switchdev_trans_ph_prepare(trans)) {
|
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++)
|
if (!port_priv->ethsw_data->vlans[vid])
|
new_vlans++;
|
|
/* Check if there is space for a new VLAN */
|
err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle,
|
ðsw->sw_attr);
|
if (err) {
|
netdev_err(netdev, "dpsw_get_attributes err %d\n", err);
|
return err;
|
}
|
if (attr->max_vlans - attr->num_vlans < new_vlans)
|
return -ENOSPC;
|
|
return 0;
|
}
|
|
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
|
if (!port_priv->ethsw_data->vlans[vid]) {
|
/* this is a new VLAN */
|
err = dpaa2_switch_add_vlan(port_priv->ethsw_data, vid);
|
if (err)
|
return err;
|
|
port_priv->ethsw_data->vlans[vid] |= ETHSW_VLAN_GLOBAL;
|
}
|
err = dpaa2_switch_port_add_vlan(port_priv, vid, vlan->flags);
|
if (err)
|
break;
|
}
|
|
return err;
|
}
|
|
static int dpaa2_switch_port_lookup_address(struct net_device *netdev, int is_uc,
|
const unsigned char *addr)
|
{
|
struct netdev_hw_addr_list *list = (is_uc) ? &netdev->uc : &netdev->mc;
|
struct netdev_hw_addr *ha;
|
|
netif_addr_lock_bh(netdev);
|
list_for_each_entry(ha, &list->list, list) {
|
if (ether_addr_equal(ha->addr, addr)) {
|
netif_addr_unlock_bh(netdev);
|
return 1;
|
}
|
}
|
netif_addr_unlock_bh(netdev);
|
return 0;
|
}
|
|
static int dpaa2_switch_port_mdb_add(struct net_device *netdev,
|
const struct switchdev_obj_port_mdb *mdb,
|
struct switchdev_trans *trans)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
int err;
|
|
if (switchdev_trans_ph_prepare(trans))
|
return 0;
|
|
/* Check if address is already set on this port */
|
if (dpaa2_switch_port_lookup_address(netdev, 0, mdb->addr))
|
return -EEXIST;
|
|
err = dpaa2_switch_port_fdb_add_mc(port_priv, mdb->addr);
|
if (err)
|
return err;
|
|
err = dev_mc_add(netdev, mdb->addr);
|
if (err) {
|
netdev_err(netdev, "dev_mc_add err %d\n", err);
|
dpaa2_switch_port_fdb_del_mc(port_priv, mdb->addr);
|
}
|
|
return err;
|
}
|
|
static int dpaa2_switch_port_obj_add(struct net_device *netdev,
|
const struct switchdev_obj *obj,
|
struct switchdev_trans *trans)
|
{
|
int err;
|
|
switch (obj->id) {
|
case SWITCHDEV_OBJ_ID_PORT_VLAN:
|
err = dpaa2_switch_port_vlans_add(netdev,
|
SWITCHDEV_OBJ_PORT_VLAN(obj),
|
trans);
|
break;
|
case SWITCHDEV_OBJ_ID_PORT_MDB:
|
err = dpaa2_switch_port_mdb_add(netdev,
|
SWITCHDEV_OBJ_PORT_MDB(obj),
|
trans);
|
break;
|
default:
|
err = -EOPNOTSUPP;
|
break;
|
}
|
|
return err;
|
}
|
|
static int dpaa2_switch_port_del_vlan(struct ethsw_port_priv *port_priv, u16 vid)
|
{
|
struct ethsw_core *ethsw = port_priv->ethsw_data;
|
struct net_device *netdev = port_priv->netdev;
|
struct dpsw_vlan_if_cfg vcfg;
|
int i, err;
|
|
if (!port_priv->vlans[vid])
|
return -ENOENT;
|
|
if (port_priv->vlans[vid] & ETHSW_VLAN_PVID) {
|
err = dpaa2_switch_port_set_pvid(port_priv, 0);
|
if (err)
|
return err;
|
}
|
|
vcfg.num_ifs = 1;
|
vcfg.if_id[0] = port_priv->idx;
|
if (port_priv->vlans[vid] & ETHSW_VLAN_UNTAGGED) {
|
err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0,
|
ethsw->dpsw_handle,
|
vid, &vcfg);
|
if (err) {
|
netdev_err(netdev,
|
"dpsw_vlan_remove_if_untagged err %d\n",
|
err);
|
}
|
port_priv->vlans[vid] &= ~ETHSW_VLAN_UNTAGGED;
|
}
|
|
if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) {
|
err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle,
|
vid, &vcfg);
|
if (err) {
|
netdev_err(netdev,
|
"dpsw_vlan_remove_if err %d\n", err);
|
return err;
|
}
|
port_priv->vlans[vid] &= ~ETHSW_VLAN_MEMBER;
|
|
/* Delete VLAN from switch if it is no longer configured on
|
* any port
|
*/
|
for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
|
if (ethsw->ports[i]->vlans[vid] & ETHSW_VLAN_MEMBER)
|
return 0; /* Found a port member in VID */
|
|
ethsw->vlans[vid] &= ~ETHSW_VLAN_GLOBAL;
|
|
err = dpaa2_switch_dellink(ethsw, vid);
|
if (err)
|
return err;
|
}
|
|
return 0;
|
}
|
|
static int dpaa2_switch_port_vlans_del(struct net_device *netdev,
|
const struct switchdev_obj_port_vlan *vlan)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
int vid, err = 0;
|
|
if (netif_is_bridge_master(vlan->obj.orig_dev))
|
return -EOPNOTSUPP;
|
|
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
|
err = dpaa2_switch_port_del_vlan(port_priv, vid);
|
if (err)
|
break;
|
}
|
|
return err;
|
}
|
|
static int dpaa2_switch_port_mdb_del(struct net_device *netdev,
|
const struct switchdev_obj_port_mdb *mdb)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
int err;
|
|
if (!dpaa2_switch_port_lookup_address(netdev, 0, mdb->addr))
|
return -ENOENT;
|
|
err = dpaa2_switch_port_fdb_del_mc(port_priv, mdb->addr);
|
if (err)
|
return err;
|
|
err = dev_mc_del(netdev, mdb->addr);
|
if (err) {
|
netdev_err(netdev, "dev_mc_del err %d\n", err);
|
return err;
|
}
|
|
return err;
|
}
|
|
static int dpaa2_switch_port_obj_del(struct net_device *netdev,
|
const struct switchdev_obj *obj)
|
{
|
int err;
|
|
switch (obj->id) {
|
case SWITCHDEV_OBJ_ID_PORT_VLAN:
|
err = dpaa2_switch_port_vlans_del(netdev, SWITCHDEV_OBJ_PORT_VLAN(obj));
|
break;
|
case SWITCHDEV_OBJ_ID_PORT_MDB:
|
err = dpaa2_switch_port_mdb_del(netdev, SWITCHDEV_OBJ_PORT_MDB(obj));
|
break;
|
default:
|
err = -EOPNOTSUPP;
|
break;
|
}
|
return err;
|
}
|
|
static int dpaa2_switch_port_attr_set_event(struct net_device *netdev,
|
struct switchdev_notifier_port_attr_info
|
*port_attr_info)
|
{
|
int err;
|
|
err = dpaa2_switch_port_attr_set(netdev, port_attr_info->attr,
|
port_attr_info->trans);
|
|
port_attr_info->handled = true;
|
return notifier_from_errno(err);
|
}
|
|
/* For the moment, only flood setting needs to be updated */
|
static int dpaa2_switch_port_bridge_join(struct net_device *netdev,
|
struct net_device *upper_dev)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
struct ethsw_core *ethsw = port_priv->ethsw_data;
|
struct ethsw_port_priv *other_port_priv;
|
struct net_device *other_dev;
|
struct list_head *iter;
|
int i, err;
|
|
for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
|
if (ethsw->ports[i]->bridge_dev &&
|
(ethsw->ports[i]->bridge_dev != upper_dev)) {
|
netdev_err(netdev,
|
"Only one bridge supported per DPSW object!\n");
|
return -EINVAL;
|
}
|
|
netdev_for_each_lower_dev(upper_dev, other_dev, iter) {
|
if (!dpaa2_switch_port_dev_check(other_dev, NULL))
|
continue;
|
|
other_port_priv = netdev_priv(other_dev);
|
if (other_port_priv->ethsw_data != port_priv->ethsw_data) {
|
netdev_err(netdev,
|
"Interface from a different DPSW is in the bridge already!\n");
|
return -EINVAL;
|
}
|
}
|
|
/* Enable flooding */
|
err = dpaa2_switch_port_set_flood(port_priv, 1);
|
if (!err)
|
port_priv->bridge_dev = upper_dev;
|
|
return err;
|
}
|
|
static int dpaa2_switch_port_bridge_leave(struct net_device *netdev)
|
{
|
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
|
int err;
|
|
/* Disable flooding */
|
err = dpaa2_switch_port_set_flood(port_priv, 0);
|
if (!err)
|
port_priv->bridge_dev = NULL;
|
|
return err;
|
}
|
|
static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb,
|
unsigned long event, void *ptr)
|
{
|
struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
|
struct netdev_notifier_changeupper_info *info = ptr;
|
struct net_device *upper_dev;
|
int err = 0;
|
|
if (!dpaa2_switch_port_dev_check(netdev, nb))
|
return NOTIFY_DONE;
|
|
/* Handle just upper dev link/unlink for the moment */
|
if (event == NETDEV_CHANGEUPPER) {
|
upper_dev = info->upper_dev;
|
if (netif_is_bridge_master(upper_dev)) {
|
if (info->linking)
|
err = dpaa2_switch_port_bridge_join(netdev, upper_dev);
|
else
|
err = dpaa2_switch_port_bridge_leave(netdev);
|
}
|
}
|
|
return notifier_from_errno(err);
|
}
|
|
struct ethsw_switchdev_event_work {
|
struct work_struct work;
|
struct switchdev_notifier_fdb_info fdb_info;
|
struct net_device *dev;
|
unsigned long event;
|
};
|
|
static void dpaa2_switch_event_work(struct work_struct *work)
|
{
|
struct ethsw_switchdev_event_work *switchdev_work =
|
container_of(work, struct ethsw_switchdev_event_work, work);
|
struct net_device *dev = switchdev_work->dev;
|
struct switchdev_notifier_fdb_info *fdb_info;
|
int err;
|
|
rtnl_lock();
|
fdb_info = &switchdev_work->fdb_info;
|
|
switch (switchdev_work->event) {
|
case SWITCHDEV_FDB_ADD_TO_DEVICE:
|
if (!fdb_info->added_by_user)
|
break;
|
if (is_unicast_ether_addr(fdb_info->addr))
|
err = dpaa2_switch_port_fdb_add_uc(netdev_priv(dev),
|
fdb_info->addr);
|
else
|
err = dpaa2_switch_port_fdb_add_mc(netdev_priv(dev),
|
fdb_info->addr);
|
if (err)
|
break;
|
fdb_info->offloaded = true;
|
call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev,
|
&fdb_info->info, NULL);
|
break;
|
case SWITCHDEV_FDB_DEL_TO_DEVICE:
|
if (!fdb_info->added_by_user)
|
break;
|
if (is_unicast_ether_addr(fdb_info->addr))
|
dpaa2_switch_port_fdb_del_uc(netdev_priv(dev), fdb_info->addr);
|
else
|
dpaa2_switch_port_fdb_del_mc(netdev_priv(dev), fdb_info->addr);
|
break;
|
}
|
|
rtnl_unlock();
|
kfree(switchdev_work->fdb_info.addr);
|
kfree(switchdev_work);
|
dev_put(dev);
|
}
|
|
/* Called under rcu_read_lock() */
|
static int dpaa2_switch_port_event(struct notifier_block *nb,
|
unsigned long event, void *ptr)
|
{
|
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
|
struct ethsw_port_priv *port_priv = netdev_priv(dev);
|
struct ethsw_switchdev_event_work *switchdev_work;
|
struct switchdev_notifier_fdb_info *fdb_info = ptr;
|
struct ethsw_core *ethsw = port_priv->ethsw_data;
|
|
if (!dpaa2_switch_port_dev_check(dev, nb))
|
return NOTIFY_DONE;
|
|
if (event == SWITCHDEV_PORT_ATTR_SET)
|
return dpaa2_switch_port_attr_set_event(dev, ptr);
|
|
switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
|
if (!switchdev_work)
|
return NOTIFY_BAD;
|
|
INIT_WORK(&switchdev_work->work, dpaa2_switch_event_work);
|
switchdev_work->dev = dev;
|
switchdev_work->event = event;
|
|
switch (event) {
|
case SWITCHDEV_FDB_ADD_TO_DEVICE:
|
case SWITCHDEV_FDB_DEL_TO_DEVICE:
|
memcpy(&switchdev_work->fdb_info, ptr,
|
sizeof(switchdev_work->fdb_info));
|
switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
|
if (!switchdev_work->fdb_info.addr)
|
goto err_addr_alloc;
|
|
ether_addr_copy((u8 *)switchdev_work->fdb_info.addr,
|
fdb_info->addr);
|
|
/* Take a reference on the device to avoid being freed. */
|
dev_hold(dev);
|
break;
|
default:
|
kfree(switchdev_work);
|
return NOTIFY_DONE;
|
}
|
|
queue_work(ethsw->workqueue, &switchdev_work->work);
|
|
return NOTIFY_DONE;
|
|
err_addr_alloc:
|
kfree(switchdev_work);
|
return NOTIFY_BAD;
|
}
|
|
static int dpaa2_switch_port_obj_event(unsigned long event,
|
struct net_device *netdev,
|
struct switchdev_notifier_port_obj_info *port_obj_info)
|
{
|
int err = -EOPNOTSUPP;
|
|
switch (event) {
|
case SWITCHDEV_PORT_OBJ_ADD:
|
err = dpaa2_switch_port_obj_add(netdev, port_obj_info->obj,
|
port_obj_info->trans);
|
break;
|
case SWITCHDEV_PORT_OBJ_DEL:
|
err = dpaa2_switch_port_obj_del(netdev, port_obj_info->obj);
|
break;
|
}
|
|
port_obj_info->handled = true;
|
return notifier_from_errno(err);
|
}
|
|
static int dpaa2_switch_port_blocking_event(struct notifier_block *nb,
|
unsigned long event, void *ptr)
|
{
|
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
|
|
if (!dpaa2_switch_port_dev_check(dev, nb))
|
return NOTIFY_DONE;
|
|
switch (event) {
|
case SWITCHDEV_PORT_OBJ_ADD:
|
case SWITCHDEV_PORT_OBJ_DEL:
|
return dpaa2_switch_port_obj_event(event, dev, ptr);
|
case SWITCHDEV_PORT_ATTR_SET:
|
return dpaa2_switch_port_attr_set_event(dev, ptr);
|
}
|
|
return NOTIFY_DONE;
|
}
|
|
static int dpaa2_switch_register_notifier(struct device *dev)
|
{
|
struct ethsw_core *ethsw = dev_get_drvdata(dev);
|
int err;
|
|
ethsw->port_nb.notifier_call = dpaa2_switch_port_netdevice_event;
|
err = register_netdevice_notifier(ðsw->port_nb);
|
if (err) {
|
dev_err(dev, "Failed to register netdev notifier\n");
|
return err;
|
}
|
|
ethsw->port_switchdev_nb.notifier_call = dpaa2_switch_port_event;
|
err = register_switchdev_notifier(ðsw->port_switchdev_nb);
|
if (err) {
|
dev_err(dev, "Failed to register switchdev notifier\n");
|
goto err_switchdev_nb;
|
}
|
|
ethsw->port_switchdevb_nb.notifier_call = dpaa2_switch_port_blocking_event;
|
err = register_switchdev_blocking_notifier(ðsw->port_switchdevb_nb);
|
if (err) {
|
dev_err(dev, "Failed to register switchdev blocking notifier\n");
|
goto err_switchdev_blocking_nb;
|
}
|
|
return 0;
|
|
err_switchdev_blocking_nb:
|
unregister_switchdev_notifier(ðsw->port_switchdev_nb);
|
err_switchdev_nb:
|
unregister_netdevice_notifier(ðsw->port_nb);
|
return err;
|
}
|
|
static void dpaa2_switch_detect_features(struct ethsw_core *ethsw)
|
{
|
ethsw->features = 0;
|
|
if (ethsw->major > 8 || (ethsw->major == 8 && ethsw->minor >= 6))
|
ethsw->features |= ETHSW_FEATURE_MAC_ADDR;
|
}
|
|
static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
|
{
|
struct device *dev = &sw_dev->dev;
|
struct ethsw_core *ethsw = dev_get_drvdata(dev);
|
struct dpsw_stp_cfg stp_cfg;
|
int err;
|
u16 i;
|
|
ethsw->dev_id = sw_dev->obj_desc.id;
|
|
err = dpsw_open(ethsw->mc_io, 0, ethsw->dev_id, ðsw->dpsw_handle);
|
if (err) {
|
dev_err(dev, "dpsw_open err %d\n", err);
|
return err;
|
}
|
|
err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle,
|
ðsw->sw_attr);
|
if (err) {
|
dev_err(dev, "dpsw_get_attributes err %d\n", err);
|
goto err_close;
|
}
|
|
err = dpsw_get_api_version(ethsw->mc_io, 0,
|
ðsw->major,
|
ðsw->minor);
|
if (err) {
|
dev_err(dev, "dpsw_get_api_version err %d\n", err);
|
goto err_close;
|
}
|
|
/* Minimum supported DPSW version check */
|
if (ethsw->major < DPSW_MIN_VER_MAJOR ||
|
(ethsw->major == DPSW_MIN_VER_MAJOR &&
|
ethsw->minor < DPSW_MIN_VER_MINOR)) {
|
dev_err(dev, "DPSW version %d:%d not supported. Use %d.%d or greater.\n",
|
ethsw->major,
|
ethsw->minor,
|
DPSW_MIN_VER_MAJOR, DPSW_MIN_VER_MINOR);
|
err = -ENOTSUPP;
|
goto err_close;
|
}
|
|
dpaa2_switch_detect_features(ethsw);
|
|
err = dpsw_reset(ethsw->mc_io, 0, ethsw->dpsw_handle);
|
if (err) {
|
dev_err(dev, "dpsw_reset err %d\n", err);
|
goto err_close;
|
}
|
|
err = dpsw_fdb_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle, 0,
|
DPSW_FDB_LEARNING_MODE_HW);
|
if (err) {
|
dev_err(dev, "dpsw_fdb_set_learning_mode err %d\n", err);
|
goto err_close;
|
}
|
|
stp_cfg.vlan_id = DEFAULT_VLAN_ID;
|
stp_cfg.state = DPSW_STP_STATE_FORWARDING;
|
|
for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
|
err = dpsw_if_set_stp(ethsw->mc_io, 0, ethsw->dpsw_handle, i,
|
&stp_cfg);
|
if (err) {
|
dev_err(dev, "dpsw_if_set_stp err %d for port %d\n",
|
err, i);
|
goto err_close;
|
}
|
|
err = dpsw_if_set_broadcast(ethsw->mc_io, 0,
|
ethsw->dpsw_handle, i, 1);
|
if (err) {
|
dev_err(dev,
|
"dpsw_if_set_broadcast err %d for port %d\n",
|
err, i);
|
goto err_close;
|
}
|
}
|
|
ethsw->workqueue = alloc_ordered_workqueue("%s_%d_ordered",
|
WQ_MEM_RECLAIM, "ethsw",
|
ethsw->sw_attr.id);
|
if (!ethsw->workqueue) {
|
err = -ENOMEM;
|
goto err_close;
|
}
|
|
err = dpaa2_switch_register_notifier(dev);
|
if (err)
|
goto err_destroy_ordered_workqueue;
|
|
return 0;
|
|
err_destroy_ordered_workqueue:
|
destroy_workqueue(ethsw->workqueue);
|
|
err_close:
|
dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle);
|
return err;
|
}
|
|
static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port)
|
{
|
struct net_device *netdev = port_priv->netdev;
|
struct ethsw_core *ethsw = port_priv->ethsw_data;
|
struct dpsw_vlan_if_cfg vcfg;
|
int err;
|
|
/* Switch starts with all ports configured to VLAN 1. Need to
|
* remove this setting to allow configuration at bridge join
|
*/
|
vcfg.num_ifs = 1;
|
vcfg.if_id[0] = port_priv->idx;
|
|
err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, ethsw->dpsw_handle,
|
DEFAULT_VLAN_ID, &vcfg);
|
if (err) {
|
netdev_err(netdev, "dpsw_vlan_remove_if_untagged err %d\n",
|
err);
|
return err;
|
}
|
|
err = dpaa2_switch_port_set_pvid(port_priv, 0);
|
if (err)
|
return err;
|
|
err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle,
|
DEFAULT_VLAN_ID, &vcfg);
|
if (err)
|
netdev_err(netdev, "dpsw_vlan_remove_if err %d\n", err);
|
|
return err;
|
}
|
|
static void dpaa2_switch_unregister_notifier(struct device *dev)
|
{
|
struct ethsw_core *ethsw = dev_get_drvdata(dev);
|
struct notifier_block *nb;
|
int err;
|
|
nb = ðsw->port_switchdevb_nb;
|
err = unregister_switchdev_blocking_notifier(nb);
|
if (err)
|
dev_err(dev,
|
"Failed to unregister switchdev blocking notifier (%d)\n",
|
err);
|
|
err = unregister_switchdev_notifier(ðsw->port_switchdev_nb);
|
if (err)
|
dev_err(dev,
|
"Failed to unregister switchdev notifier (%d)\n", err);
|
|
err = unregister_netdevice_notifier(ðsw->port_nb);
|
if (err)
|
dev_err(dev,
|
"Failed to unregister netdev notifier (%d)\n", err);
|
}
|
|
static void dpaa2_switch_takedown(struct fsl_mc_device *sw_dev)
|
{
|
struct device *dev = &sw_dev->dev;
|
struct ethsw_core *ethsw = dev_get_drvdata(dev);
|
int err;
|
|
dpaa2_switch_unregister_notifier(dev);
|
|
err = dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle);
|
if (err)
|
dev_warn(dev, "dpsw_close err %d\n", err);
|
}
|
|
static int dpaa2_switch_remove(struct fsl_mc_device *sw_dev)
|
{
|
struct ethsw_port_priv *port_priv;
|
struct ethsw_core *ethsw;
|
struct device *dev;
|
int i;
|
|
dev = &sw_dev->dev;
|
ethsw = dev_get_drvdata(dev);
|
|
dpaa2_switch_teardown_irqs(sw_dev);
|
|
dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle);
|
|
for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
|
port_priv = ethsw->ports[i];
|
unregister_netdev(port_priv->netdev);
|
free_netdev(port_priv->netdev);
|
}
|
kfree(ethsw->ports);
|
|
dpaa2_switch_takedown(sw_dev);
|
|
destroy_workqueue(ethsw->workqueue);
|
|
fsl_mc_portal_free(ethsw->mc_io);
|
|
kfree(ethsw);
|
|
dev_set_drvdata(dev, NULL);
|
|
return 0;
|
}
|
|
static int dpaa2_switch_probe_port(struct ethsw_core *ethsw,
|
u16 port_idx)
|
{
|
struct ethsw_port_priv *port_priv;
|
struct device *dev = ethsw->dev;
|
struct net_device *port_netdev;
|
int err;
|
|
port_netdev = alloc_etherdev(sizeof(struct ethsw_port_priv));
|
if (!port_netdev) {
|
dev_err(dev, "alloc_etherdev error\n");
|
return -ENOMEM;
|
}
|
|
port_priv = netdev_priv(port_netdev);
|
port_priv->netdev = port_netdev;
|
port_priv->ethsw_data = ethsw;
|
|
port_priv->idx = port_idx;
|
port_priv->stp_state = BR_STATE_FORWARDING;
|
|
/* Flooding is implicitly enabled */
|
port_priv->flood = true;
|
|
SET_NETDEV_DEV(port_netdev, dev);
|
port_netdev->netdev_ops = &dpaa2_switch_port_ops;
|
port_netdev->ethtool_ops = &dpaa2_switch_port_ethtool_ops;
|
|
/* Set MTU limits */
|
port_netdev->min_mtu = ETH_MIN_MTU;
|
port_netdev->max_mtu = ETHSW_MAX_FRAME_LENGTH;
|
|
err = dpaa2_switch_port_init(port_priv, port_idx);
|
if (err)
|
goto err_port_probe;
|
|
err = dpaa2_switch_port_set_mac_addr(port_priv);
|
if (err)
|
goto err_port_probe;
|
|
err = register_netdev(port_netdev);
|
if (err < 0) {
|
dev_err(dev, "register_netdev error %d\n", err);
|
goto err_port_probe;
|
}
|
|
ethsw->ports[port_idx] = port_priv;
|
|
return 0;
|
|
err_port_probe:
|
free_netdev(port_netdev);
|
|
return err;
|
}
|
|
static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev)
|
{
|
struct device *dev = &sw_dev->dev;
|
struct ethsw_core *ethsw;
|
int i, err;
|
|
/* Allocate switch core*/
|
ethsw = kzalloc(sizeof(*ethsw), GFP_KERNEL);
|
|
if (!ethsw)
|
return -ENOMEM;
|
|
ethsw->dev = dev;
|
dev_set_drvdata(dev, ethsw);
|
|
err = fsl_mc_portal_allocate(sw_dev, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
|
ðsw->mc_io);
|
if (err) {
|
if (err == -ENXIO)
|
err = -EPROBE_DEFER;
|
else
|
dev_err(dev, "fsl_mc_portal_allocate err %d\n", err);
|
goto err_free_drvdata;
|
}
|
|
err = dpaa2_switch_init(sw_dev);
|
if (err)
|
goto err_free_cmdport;
|
|
/* DEFAULT_VLAN_ID is implicitly configured on the switch */
|
ethsw->vlans[DEFAULT_VLAN_ID] = ETHSW_VLAN_MEMBER;
|
|
/* Learning is implicitly enabled */
|
ethsw->learning = true;
|
|
ethsw->ports = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->ports),
|
GFP_KERNEL);
|
if (!(ethsw->ports)) {
|
err = -ENOMEM;
|
goto err_takedown;
|
}
|
|
for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
|
err = dpaa2_switch_probe_port(ethsw, i);
|
if (err)
|
goto err_free_ports;
|
}
|
|
err = dpsw_enable(ethsw->mc_io, 0, ethsw->dpsw_handle);
|
if (err) {
|
dev_err(ethsw->dev, "dpsw_enable err %d\n", err);
|
goto err_free_ports;
|
}
|
|
/* Make sure the switch ports are disabled at probe time */
|
for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
|
dpsw_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle, i);
|
|
/* Setup IRQs */
|
err = dpaa2_switch_setup_irqs(sw_dev);
|
if (err)
|
goto err_stop;
|
|
dev_info(dev, "probed %d port switch\n", ethsw->sw_attr.num_ifs);
|
return 0;
|
|
err_stop:
|
dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle);
|
|
err_free_ports:
|
/* Cleanup registered ports only */
|
for (i--; i >= 0; i--) {
|
unregister_netdev(ethsw->ports[i]->netdev);
|
free_netdev(ethsw->ports[i]->netdev);
|
}
|
kfree(ethsw->ports);
|
|
err_takedown:
|
dpaa2_switch_takedown(sw_dev);
|
|
err_free_cmdport:
|
fsl_mc_portal_free(ethsw->mc_io);
|
|
err_free_drvdata:
|
kfree(ethsw);
|
dev_set_drvdata(dev, NULL);
|
|
return err;
|
}
|
|
static const struct fsl_mc_device_id dpaa2_switch_match_id_table[] = {
|
{
|
.vendor = FSL_MC_VENDOR_FREESCALE,
|
.obj_type = "dpsw",
|
},
|
{ .vendor = 0x0 }
|
};
|
MODULE_DEVICE_TABLE(fslmc, dpaa2_switch_match_id_table);
|
|
static struct fsl_mc_driver dpaa2_switch_drv = {
|
.driver = {
|
.name = KBUILD_MODNAME,
|
.owner = THIS_MODULE,
|
},
|
.probe = dpaa2_switch_probe,
|
.remove = dpaa2_switch_remove,
|
.match_id_table = dpaa2_switch_match_id_table
|
};
|
|
module_fsl_mc_driver(dpaa2_switch_drv);
|
|
MODULE_LICENSE("GPL v2");
|
MODULE_DESCRIPTION("DPAA2 Ethernet Switch Driver");
|
