@@ -16,7 +16,7 @@ obj-$(CONFIG_TI_CPTS_MOD) += cpts.o
obj-$(CONFIG_TI_CPSW) += ti_cpsw.o
ti_cpsw-y := cpsw.o davinci_cpdma.o cpsw_ale.o cpsw_priv.o cpsw_sl.o cpsw_ethtool.o
obj-$(CONFIG_TI_CPSW_SWITCHDEV) += ti_cpsw_new.o
-ti_cpsw_new-y := cpsw_new.o davinci_cpdma.o cpsw_ale.o cpsw_sl.o cpsw_priv.o cpsw_ethtool.o
+ti_cpsw_new-y := cpsw_switchdev.o cpsw_new.o davinci_cpdma.o cpsw_ale.o cpsw_sl.o cpsw_priv.o cpsw_ethtool.o
obj-$(CONFIG_TI_KEYSTONE_NETCP) += keystone_netcp.o
keystone_netcp-y := netcp_core.o cpsw_ale.o
@@ -35,6 +35,7 @@
#include "cpsw_ale.h"
#include "cpsw_priv.h"
#include "cpsw_sl.h"
+#include "cpsw_switchdev.h"
#include "cpts.h"
#include "davinci_cpdma.h"
@@ -51,6 +52,7 @@ struct cpsw_devlink {
enum cpsw_devlink_param_id {
CPSW_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
+ CPSW_DL_PARAM_SWITCH_MODE,
CPSW_DL_PARAM_ALE_BYPASS,
};
@@ -66,12 +68,20 @@ static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
return priv->emac_port - 1;
}
+static bool cpsw_is_switch_en(struct cpsw_common *cpsw)
+{
+ return !cpsw->data.dual_emac;
+}
+
static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
{
struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
bool enable_uni = false;
int i;
+ if (cpsw_is_switch_en(cpsw))
+ return;
+
/* Enabling promiscuous mode for one interface will be
* common for both the interface as the interface shares
* the same hardware resource.
@@ -359,6 +369,7 @@ static void cpsw_rx_handler(void *token, int len, int status)
goto requeue;
}
+ skb->offload_fwd_mark = priv->offload_fwd_mark;
skb_reserve(skb, headroom);
skb_put(skb, len);
skb->dev = ndev;
@@ -389,8 +400,8 @@ static void cpsw_rx_handler(void *token, int len, int status)
}
}
-static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
- unsigned short vid)
+static int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
+ unsigned short vid)
{
struct cpsw_common *cpsw = priv->cpsw;
int unreg_mcast_mask = 0;
@@ -435,6 +446,11 @@ static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
struct cpsw_common *cpsw = priv->cpsw;
int ret, i;
+ if (cpsw_is_switch_en(cpsw)) {
+ dev_dbg(cpsw->dev, ".ndo_vlan_rx_add_vid called in switch mode\n");
+ return 0;
+ }
+
if (vid == cpsw->data.default_vlan)
return 0;
@@ -489,9 +505,36 @@ static void cpsw_restore(struct cpsw_priv *priv)
cpsw_cbs_resume(&cpsw->slaves[priv->emac_port - 1], priv);
}
-static void cpsw_init_host_port_dual_mac(struct cpsw_priv *priv)
+static void cpsw_init_stp_ale_entry(struct cpsw_common *cpsw)
+{
+ char stpa[] = {0x01, 0x80, 0xc2, 0x0, 0x0, 0x0};
+
+ cpsw_ale_add_mcast(cpsw->ale, stpa,
+ ALE_PORT_HOST, ALE_SUPER, 0,
+ ALE_MCAST_BLOCK_LEARN_FWD);
+}
+
+static void cpsw_init_host_port_switch(struct cpsw_common *cpsw)
+{
+ int vlan = cpsw->data.default_vlan;
+
+ writel(CPSW_FIFO_NORMAL_MODE, &cpsw->host_port_regs->tx_in_ctl);
+
+ writel(vlan, &cpsw->host_port_regs->port_vlan);
+
+ cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
+ ALE_ALL_PORTS, ALE_ALL_PORTS,
+ ALE_PORT_1 | ALE_PORT_2);
+
+ cpsw_init_stp_ale_entry(cpsw);
+
+ cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 1);
+ dev_dbg(cpsw->dev, "Set P0_UNI_FLOOD\n");
+ cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 0);
+}
+
+static void cpsw_init_host_port_dual_mac(struct cpsw_common *cpsw)
{
- struct cpsw_common *cpsw = priv->cpsw;
int vlan = cpsw->data.default_vlan;
writel(CPSW_FIFO_DUAL_MAC_MODE, &cpsw->host_port_regs->tx_in_ctl);
@@ -536,7 +579,10 @@ static void cpsw_init_host_port(struct cpsw_priv *priv)
/* Enable internal fifo flow control */
writel(0x7, &cpsw->regs->flow_control);
- cpsw_init_host_port_dual_mac(priv);
+ if (cpsw_is_switch_en(cpsw))
+ cpsw_init_host_port_switch(cpsw);
+ else
+ cpsw_init_host_port_dual_mac(cpsw);
cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
@@ -568,6 +614,41 @@ static void cpsw_port_add_dual_emac_def_ale_entries(struct cpsw_priv *priv,
ALE_PORT_NOLEARN, 1);
}
+static void cpsw_port_add_switch_def_ale_entries(struct cpsw_priv *priv,
+ struct cpsw_slave *slave)
+{
+ u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
+ struct cpsw_common *cpsw = priv->cpsw;
+ u32 reg;
+
+ cpsw_ale_control_set(cpsw->ale, priv->emac_port,
+ ALE_PORT_DROP_UNKNOWN_VLAN, 0);
+ cpsw_ale_control_set(cpsw->ale, priv->emac_port,
+ ALE_PORT_NOLEARN, 0);
+ /* disabling SA_UPDATE required to make stp work, without this setting
+ * Host MAC addresses will jump between ports.
+ * As per TRM MAC address can be defined as unicast supervisory (super)
+ * by setting both (ALE_BLOCKED | ALE_SECURE) which should prevent
+ * SA_UPDATE, but HW seems works incorrectly and setting ALE_SECURE
+ * causes STP packets to be dropped due to ingress filter
+ * if (source address found) and (secure) and
+ * (receive port number != port_number))
+ * then discard the packet
+ */
+ cpsw_ale_control_set(cpsw->ale, priv->emac_port,
+ ALE_PORT_NO_SA_UPDATE, 1);
+
+ cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
+ port_mask, ALE_VLAN, slave->port_vlan,
+ ALE_MCAST_FWD_2);
+ cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
+ HOST_PORT_NUM, ALE_VLAN, slave->port_vlan);
+
+ reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
+ CPSW2_PORT_VLAN;
+ slave_write(slave, slave->port_vlan, reg);
+}
+
static void cpsw_adjust_link(struct net_device *ndev)
{
struct cpsw_priv *priv = netdev_priv(ndev);
@@ -680,7 +761,10 @@ static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
slave->mac_control = 0; /* no link yet */
- cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
+ if (cpsw_is_switch_en(cpsw))
+ cpsw_port_add_switch_def_ale_entries(priv, slave);
+ else
+ cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
if (!slave->data->phy_node)
dev_err(priv->dev, "no phy found on slave %d\n",
@@ -748,7 +832,8 @@ static int cpsw_ndo_open(struct net_device *ndev)
struct cpsw_common *cpsw = priv->cpsw;
int ret;
- cpsw_info(priv, ifdown, "starting ndev\n");
+ dev_info(priv->dev, "starting ndev. mode: %s\n",
+ cpsw_is_switch_en(cpsw) ? "switch" : "dual_mac");
ret = pm_runtime_get_sync(cpsw->dev);
if (ret < 0) {
pm_runtime_put_noidle(cpsw->dev);
@@ -932,6 +1017,11 @@ static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
int ret;
int i;
+ if (cpsw_is_switch_en(cpsw)) {
+ dev_dbg(cpsw->dev, "ndo del vlan is called in switch mode\n");
+ return 0;
+ }
+
if (vid == cpsw->data.default_vlan)
return 0;
@@ -1010,6 +1100,17 @@ static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
return n - drops;
}
+static int cpsw_get_port_parent_id(struct net_device *ndev,
+ struct netdev_phys_item_id *ppid)
+{
+ struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
+
+ ppid->id_len = sizeof(cpsw->base_mac);
+ memcpy(&ppid->id, &cpsw->base_mac, ppid->id_len);
+
+ return 0;
+}
+
static const struct net_device_ops cpsw_netdev_ops = {
.ndo_open = cpsw_ndo_open,
.ndo_stop = cpsw_ndo_stop,
@@ -1029,6 +1130,7 @@ static const struct net_device_ops cpsw_netdev_ops = {
.ndo_get_phys_port_name = cpsw_ndo_get_phys_port_name,
.ndo_bpf = cpsw_ndo_bpf,
.ndo_xdp_xmit = cpsw_ndo_xdp_xmit,
+ .ndo_get_port_parent_id = cpsw_get_port_parent_id,
};
static void cpsw_get_drvinfo(struct net_device *ndev,
@@ -1358,7 +1460,265 @@ static int cpsw_register_ports(struct cpsw_common *cpsw)
return ret;
}
-static const struct devlink_ops cpsw_devlink_ops;
+bool cpsw_port_dev_check(const struct net_device *ndev)
+{
+ if (ndev->netdev_ops == &cpsw_netdev_ops) {
+ struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
+
+ return !cpsw->data.dual_emac;
+ }
+
+ return false;
+}
+
+static void cpsw_port_offload_fwd_mark_update(struct cpsw_common *cpsw)
+{
+ int set_val = 0;
+ int i;
+
+ if (!cpsw->ale_bypass &&
+ (cpsw->br_members == (ALE_PORT_1 | ALE_PORT_2)))
+ set_val = 1;
+
+ dev_dbg(cpsw->dev, "set offload_fwd_mark %d\n", set_val);
+
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ struct net_device *sl_ndev = cpsw->slaves[i].ndev;
+ struct cpsw_priv *priv = netdev_priv(sl_ndev);
+
+ priv->offload_fwd_mark = set_val;
+ }
+}
+
+static int cpsw_netdevice_port_link(struct net_device *ndev,
+ struct net_device *br_ndev)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ struct cpsw_common *cpsw = priv->cpsw;
+
+ if (!cpsw->br_members) {
+ cpsw->hw_bridge_dev = br_ndev;
+ } else {
+ /* This is adding the port to a second bridge, this is
+ * unsupported
+ */
+ if (cpsw->hw_bridge_dev != br_ndev)
+ return -EOPNOTSUPP;
+ }
+
+ cpsw->br_members |= BIT(priv->emac_port);
+
+ cpsw_port_offload_fwd_mark_update(cpsw);
+
+ return NOTIFY_DONE;
+}
+
+static void cpsw_netdevice_port_unlink(struct net_device *ndev)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ struct cpsw_common *cpsw = priv->cpsw;
+
+ cpsw->br_members &= ~BIT(priv->emac_port);
+
+ cpsw_port_offload_fwd_mark_update(cpsw);
+
+ if (!cpsw->br_members)
+ cpsw->hw_bridge_dev = NULL;
+}
+
+/* netdev notifier */
+static int cpsw_netdevice_event(struct notifier_block *unused,
+ unsigned long event, void *ptr)
+{
+ struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
+ struct netdev_notifier_changeupper_info *info;
+ int ret = NOTIFY_DONE;
+
+ if (!cpsw_port_dev_check(ndev))
+ return NOTIFY_DONE;
+
+ switch (event) {
+ case NETDEV_CHANGEUPPER:
+ info = ptr;
+
+ if (netif_is_bridge_master(info->upper_dev)) {
+ if (info->linking)
+ ret = cpsw_netdevice_port_link(ndev,
+ info->upper_dev);
+ else
+ cpsw_netdevice_port_unlink(ndev);
+ }
+ break;
+ default:
+ return NOTIFY_DONE;
+ }
+
+ return notifier_from_errno(ret);
+}
+
+static struct notifier_block cpsw_netdevice_nb __read_mostly = {
+ .notifier_call = cpsw_netdevice_event,
+};
+
+static int cpsw_register_notifiers(struct cpsw_common *cpsw)
+{
+ int ret = 0;
+
+ ret = register_netdevice_notifier(&cpsw_netdevice_nb);
+ if (ret) {
+ dev_err(cpsw->dev, "can't register netdevice notifier\n");
+ return ret;
+ }
+
+ ret = cpsw_switchdev_register_notifiers(cpsw);
+ if (ret)
+ unregister_netdevice_notifier(&cpsw_netdevice_nb);
+
+ return ret;
+}
+
+static void cpsw_unregister_notifiers(struct cpsw_common *cpsw)
+{
+ cpsw_switchdev_unregister_notifiers(cpsw);
+ unregister_netdevice_notifier(&cpsw_netdevice_nb);
+}
+
+static const struct devlink_ops cpsw_devlink_ops = {
+};
+
+static int cpsw_dl_switch_mode_get(struct devlink *dl, u32 id,
+ struct devlink_param_gset_ctx *ctx)
+{
+ struct cpsw_devlink *dl_priv = devlink_priv(dl);
+ struct cpsw_common *cpsw = dl_priv->cpsw;
+
+ dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
+
+ if (id != CPSW_DL_PARAM_SWITCH_MODE)
+ return -EOPNOTSUPP;
+
+ ctx->val.vbool = !cpsw->data.dual_emac;
+
+ return 0;
+}
+
+static int cpsw_dl_switch_mode_set(struct devlink *dl, u32 id,
+ struct devlink_param_gset_ctx *ctx)
+{
+ struct cpsw_devlink *dl_priv = devlink_priv(dl);
+ struct cpsw_common *cpsw = dl_priv->cpsw;
+ int vlan = cpsw->data.default_vlan;
+ bool switch_en = ctx->val.vbool;
+ bool if_running = false;
+ int i;
+
+ dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
+
+ if (id != CPSW_DL_PARAM_SWITCH_MODE)
+ return -EOPNOTSUPP;
+
+ if (switch_en == !cpsw->data.dual_emac)
+ return 0;
+
+ if (!switch_en && cpsw->br_members) {
+ dev_err(cpsw->dev, "Remove ports from BR before disabling switch mode\n");
+ return -EINVAL;
+ }
+
+ rtnl_lock();
+
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ struct cpsw_slave *slave = &cpsw->slaves[i];
+ struct net_device *sl_ndev = slave->ndev;
+
+ if (!sl_ndev || !netif_running(sl_ndev))
+ continue;
+
+ if_running = true;
+ }
+
+ if (!if_running) {
+ /* all ndevs are down */
+ cpsw->data.dual_emac = !switch_en;
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ struct cpsw_slave *slave = &cpsw->slaves[i];
+ struct net_device *sl_ndev = slave->ndev;
+ struct cpsw_priv *priv;
+
+ if (!sl_ndev)
+ continue;
+
+ priv = netdev_priv(sl_ndev);
+ if (switch_en)
+ vlan = cpsw->data.default_vlan;
+ else
+ vlan = slave->data->dual_emac_res_vlan;
+ slave->port_vlan = vlan;
+ }
+ goto exit;
+ }
+
+ if (switch_en) {
+ dev_info(cpsw->dev, "Enable switch mode\n");
+
+ /* enable bypass - no forwarding; all traffic goes to Host */
+ cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
+
+ /* clean up ALE table */
+ cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
+ cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
+
+ cpsw_init_host_port_switch(cpsw);
+
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ struct cpsw_slave *slave = &cpsw->slaves[i];
+ struct net_device *sl_ndev = slave->ndev;
+ struct cpsw_priv *priv;
+
+ if (!sl_ndev)
+ continue;
+
+ priv = netdev_priv(sl_ndev);
+ slave->port_vlan = vlan;
+ if (netif_running(sl_ndev))
+ cpsw_port_add_switch_def_ale_entries(priv,
+ slave);
+ }
+
+ cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
+ cpsw->data.dual_emac = false;
+ } else {
+ dev_info(cpsw->dev, "Disable switch mode\n");
+
+ /* enable bypass - no forwarding; all traffic goes to Host */
+ cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
+
+ cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
+ cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
+
+ cpsw_init_host_port_dual_mac(cpsw);
+
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ struct cpsw_slave *slave = &cpsw->slaves[i];
+ struct net_device *sl_ndev = slave->ndev;
+ struct cpsw_priv *priv;
+
+ if (!sl_ndev)
+ continue;
+
+ priv = netdev_priv(slave->ndev);
+ slave->port_vlan = slave->data->dual_emac_res_vlan;
+ cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
+ }
+
+ cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
+ cpsw->data.dual_emac = true;
+ }
+exit:
+ rtnl_unlock();
+
+ return 0;
+}
static int cpsw_dl_ale_ctrl_get(struct devlink *dl, u32 id,
struct devlink_param_gset_ctx *ctx)
@@ -1392,6 +1752,10 @@ static int cpsw_dl_ale_ctrl_set(struct devlink *dl, u32 id,
case CPSW_DL_PARAM_ALE_BYPASS:
ret = cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS,
ctx->val.vbool);
+ if (!ret) {
+ cpsw->ale_bypass = ctx->val.vbool;
+ cpsw_port_offload_fwd_mark_update(cpsw);
+ }
break;
default:
return -EOPNOTSUPP;
@@ -1401,6 +1765,11 @@ static int cpsw_dl_ale_ctrl_set(struct devlink *dl, u32 id,
}
static const struct devlink_param cpsw_devlink_params[] = {
+ DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_SWITCH_MODE,
+ "switch_mode", DEVLINK_PARAM_TYPE_BOOL,
+ BIT(DEVLINK_PARAM_CMODE_RUNTIME),
+ cpsw_dl_switch_mode_get, cpsw_dl_switch_mode_set,
+ NULL),
DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_ALE_BYPASS,
"ale_bypass", DEVLINK_PARAM_TYPE_BOOL,
BIT(DEVLINK_PARAM_CMODE_RUNTIME),
@@ -1550,6 +1919,7 @@ static int cpsw_probe(struct platform_device *pdev)
cpsw->rx_packet_max = rx_packet_max;
cpsw->descs_pool_size = descs_pool_size;
+ eth_random_addr(cpsw->base_mac);
ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
(u32 __force)ss_res->start + CPSW2_BD_OFFSET,
@@ -1604,6 +1974,10 @@ static int cpsw_probe(struct platform_device *pdev)
goto clean_unregister_netdev;
}
+ ret = cpsw_register_notifiers(cpsw);
+ if (ret)
+ goto clean_unregister_netdev;
+
ret = cpsw_register_devlink(cpsw);
if (ret)
goto clean_unregister_notifiers;
@@ -1647,6 +2021,7 @@ static int cpsw_remove(struct platform_device *pdev)
return ret;
}
+ cpsw_unregister_notifiers(cpsw);
cpsw_unregister_devlink(cpsw);
cpsw_unregister_ports(cpsw);
@@ -356,6 +356,10 @@ struct cpsw_common {
int speed;
int usage_count;
struct page_pool *page_pool[CPSW_MAX_QUEUES];
+ u8 br_members;
+ struct net_device *hw_bridge_dev;
+ bool ale_bypass;
+ u8 base_mac[ETH_ALEN];
};
struct cpsw_priv {
@@ -376,6 +380,7 @@ struct cpsw_priv {
u32 emac_port;
struct cpsw_common *cpsw;
+ int offload_fwd_mark;
};
#define ndev_to_cpsw(ndev) (((struct cpsw_priv *)netdev_priv(ndev))->cpsw)
new file mode 100644
@@ -0,0 +1,589 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Texas Instruments switchdev Driver
+ *
+ * Copyright (C) 2019 Texas Instruments
+ *
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/if_bridge.h>
+#include <linux/netdevice.h>
+#include <linux/workqueue.h>
+#include <net/switchdev.h>
+
+#include "cpsw.h"
+#include "cpsw_ale.h"
+#include "cpsw_priv.h"
+#include "cpsw_switchdev.h"
+
+struct cpsw_switchdev_event_work {
+ struct work_struct work;
+ struct switchdev_notifier_fdb_info fdb_info;
+ struct cpsw_priv *priv;
+ unsigned long event;
+};
+
+static int cpsw_port_stp_state_set(struct cpsw_priv *priv,
+ struct switchdev_trans *trans, u8 state)
+{
+ struct cpsw_common *cpsw = priv->cpsw;
+ u8 cpsw_state;
+ int ret = 0;
+
+ if (switchdev_trans_ph_prepare(trans))
+ return 0;
+
+ switch (state) {
+ case BR_STATE_FORWARDING:
+ cpsw_state = ALE_PORT_STATE_FORWARD;
+ break;
+ case BR_STATE_LEARNING:
+ cpsw_state = ALE_PORT_STATE_LEARN;
+ break;
+ case BR_STATE_DISABLED:
+ cpsw_state = ALE_PORT_STATE_DISABLE;
+ break;
+ case BR_STATE_LISTENING:
+ case BR_STATE_BLOCKING:
+ cpsw_state = ALE_PORT_STATE_BLOCK;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ ret = cpsw_ale_control_set(cpsw->ale, priv->emac_port,
+ ALE_PORT_STATE, cpsw_state);
+ dev_dbg(priv->dev, "ale state: %u\n", cpsw_state);
+
+ return ret;
+}
+
+static int cpsw_port_attr_br_flags_set(struct cpsw_priv *priv,
+ struct switchdev_trans *trans,
+ struct net_device *orig_dev,
+ unsigned long brport_flags)
+{
+ struct cpsw_common *cpsw = priv->cpsw;
+ bool unreg_mcast_add = false;
+
+ if (switchdev_trans_ph_prepare(trans))
+ return 0;
+
+ if (brport_flags & BR_MCAST_FLOOD)
+ unreg_mcast_add = true;
+ dev_dbg(priv->dev, "BR_MCAST_FLOOD: %d port %u\n",
+ unreg_mcast_add, priv->emac_port);
+
+ cpsw_ale_set_unreg_mcast(cpsw->ale, BIT(priv->emac_port),
+ unreg_mcast_add);
+
+ return 0;
+}
+
+static int cpsw_port_attr_br_flags_pre_set(struct net_device *netdev,
+ struct switchdev_trans *trans,
+ unsigned long flags)
+{
+ if (flags & ~(BR_LEARNING | BR_MCAST_FLOOD))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int cpsw_port_attr_set(struct net_device *ndev,
+ const struct switchdev_attr *attr,
+ struct switchdev_trans *trans)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ int ret;
+
+ dev_dbg(priv->dev, "attr: id %u port: %u\n", attr->id, priv->emac_port);
+
+ switch (attr->id) {
+ case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
+ ret = cpsw_port_attr_br_flags_pre_set(ndev, trans,
+ attr->u.brport_flags);
+ break;
+ case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
+ ret = cpsw_port_stp_state_set(priv, trans, attr->u.stp_state);
+ dev_dbg(priv->dev, "stp state: %u\n", attr->u.stp_state);
+ break;
+ case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
+ ret = cpsw_port_attr_br_flags_set(priv, trans, attr->orig_dev,
+ attr->u.brport_flags);
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ return ret;
+}
+
+static u16 cpsw_get_pvid(struct cpsw_priv *priv)
+{
+ struct cpsw_common *cpsw = priv->cpsw;
+ u32 __iomem *port_vlan_reg;
+ u32 pvid;
+
+ if (priv->emac_port) {
+ int reg = CPSW2_PORT_VLAN;
+
+ if (cpsw->version == CPSW_VERSION_1)
+ reg = CPSW1_PORT_VLAN;
+ pvid = slave_read(cpsw->slaves + (priv->emac_port - 1), reg);
+ } else {
+ port_vlan_reg = &cpsw->host_port_regs->port_vlan;
+ pvid = readl(port_vlan_reg);
+ }
+
+ pvid = pvid & 0xfff;
+
+ return pvid;
+}
+
+static void cpsw_set_pvid(struct cpsw_priv *priv, u16 vid, bool cfi, u32 cos)
+{
+ struct cpsw_common *cpsw = priv->cpsw;
+ void __iomem *port_vlan_reg;
+ u32 pvid;
+
+ pvid = vid;
+ pvid |= cfi ? BIT(12) : 0;
+ pvid |= (cos & 0x7) << 13;
+
+ if (priv->emac_port) {
+ int reg = CPSW2_PORT_VLAN;
+
+ if (cpsw->version == CPSW_VERSION_1)
+ reg = CPSW1_PORT_VLAN;
+ /* no barrier */
+ slave_write(cpsw->slaves + (priv->emac_port - 1), pvid, reg);
+ } else {
+ /* CPU port */
+ port_vlan_reg = &cpsw->host_port_regs->port_vlan;
+ writel(pvid, port_vlan_reg);
+ }
+}
+
+static int cpsw_port_vlan_add(struct cpsw_priv *priv, bool untag, bool pvid,
+ u16 vid, struct net_device *orig_dev)
+{
+ bool cpu_port = netif_is_bridge_master(orig_dev);
+ struct cpsw_common *cpsw = priv->cpsw;
+ int unreg_mcast_mask = 0;
+ int reg_mcast_mask = 0;
+ int untag_mask = 0;
+ int port_mask;
+ int ret = 0;
+ u32 flags;
+
+ if (cpu_port) {
+ port_mask = BIT(HOST_PORT_NUM);
+ flags = orig_dev->flags;
+ unreg_mcast_mask = port_mask;
+ } else {
+ port_mask = BIT(priv->emac_port);
+ flags = priv->ndev->flags;
+ }
+
+ if (flags & IFF_MULTICAST)
+ reg_mcast_mask = port_mask;
+
+ if (untag)
+ untag_mask = port_mask;
+
+ ret = cpsw_ale_vlan_add_modify(cpsw->ale, vid, port_mask, untag_mask,
+ reg_mcast_mask, unreg_mcast_mask);
+ if (ret) {
+ dev_err(priv->dev, "Unable to add vlan\n");
+ return ret;
+ }
+
+ if (cpu_port)
+ cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
+ HOST_PORT_NUM, ALE_VLAN, vid);
+ if (!pvid)
+ return ret;
+
+ cpsw_set_pvid(priv, vid, 0, 0);
+
+ dev_dbg(priv->dev, "VID add: %s: vid:%u ports:%X\n",
+ priv->ndev->name, vid, port_mask);
+ return ret;
+}
+
+static int cpsw_port_vlan_del(struct cpsw_priv *priv, u16 vid,
+ struct net_device *orig_dev)
+{
+ bool cpu_port = netif_is_bridge_master(orig_dev);
+ struct cpsw_common *cpsw = priv->cpsw;
+ int port_mask;
+ int ret = 0;
+
+ if (cpu_port)
+ port_mask = BIT(HOST_PORT_NUM);
+ else
+ port_mask = BIT(priv->emac_port);
+
+ ret = cpsw_ale_del_vlan(cpsw->ale, vid, port_mask);
+ if (ret != 0)
+ return ret;
+
+ /* We don't care for the return value here, error is returned only if
+ * the unicast entry is not present
+ */
+ if (cpu_port)
+ cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
+ HOST_PORT_NUM, ALE_VLAN, vid);
+
+ if (vid == cpsw_get_pvid(priv))
+ cpsw_set_pvid(priv, 0, 0, 0);
+
+ /* We don't care for the return value here, error is returned only if
+ * the multicast entry is not present
+ */
+ cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
+ port_mask, ALE_VLAN, vid);
+ dev_dbg(priv->dev, "VID del: %s: vid:%u ports:%X\n",
+ priv->ndev->name, vid, port_mask);
+
+ return ret;
+}
+
+static int cpsw_port_vlans_add(struct cpsw_priv *priv,
+ const struct switchdev_obj_port_vlan *vlan,
+ struct switchdev_trans *trans)
+{
+ bool untag = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
+ struct net_device *orig_dev = vlan->obj.orig_dev;
+ bool cpu_port = netif_is_bridge_master(orig_dev);
+ bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
+ u16 vid;
+
+ dev_dbg(priv->dev, "VID add: %s: vid:%u flags:%X\n",
+ priv->ndev->name, vlan->vid_begin, vlan->flags);
+
+ if (cpu_port && !(vlan->flags & BRIDGE_VLAN_INFO_BRENTRY))
+ return 0;
+
+ if (switchdev_trans_ph_prepare(trans))
+ return 0;
+
+ for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
+ int err;
+
+ err = cpsw_port_vlan_add(priv, untag, pvid, vid, orig_dev);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int cpsw_port_vlans_del(struct cpsw_priv *priv,
+ const struct switchdev_obj_port_vlan *vlan)
+
+{
+ struct net_device *orig_dev = vlan->obj.orig_dev;
+ u16 vid;
+
+ for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
+ int err;
+
+ err = cpsw_port_vlan_del(priv, vid, orig_dev);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int cpsw_port_mdb_add(struct cpsw_priv *priv,
+ struct switchdev_obj_port_mdb *mdb,
+ struct switchdev_trans *trans)
+
+{
+ struct net_device *orig_dev = mdb->obj.orig_dev;
+ bool cpu_port = netif_is_bridge_master(orig_dev);
+ struct cpsw_common *cpsw = priv->cpsw;
+ int port_mask;
+ int err;
+
+ if (switchdev_trans_ph_prepare(trans))
+ return 0;
+
+ if (cpu_port)
+ port_mask = BIT(HOST_PORT_NUM);
+ else
+ port_mask = BIT(priv->emac_port);
+
+ err = cpsw_ale_add_mcast(cpsw->ale, mdb->addr, port_mask,
+ ALE_VLAN, mdb->vid, 0);
+ dev_dbg(priv->dev, "MDB add: %s: vid %u:%pM ports: %X\n",
+ priv->ndev->name, mdb->vid, mdb->addr, port_mask);
+
+ return err;
+}
+
+static int cpsw_port_mdb_del(struct cpsw_priv *priv,
+ struct switchdev_obj_port_mdb *mdb)
+
+{
+ struct net_device *orig_dev = mdb->obj.orig_dev;
+ bool cpu_port = netif_is_bridge_master(orig_dev);
+ struct cpsw_common *cpsw = priv->cpsw;
+ int del_mask;
+ int err;
+
+ if (cpu_port)
+ del_mask = BIT(HOST_PORT_NUM);
+ else
+ del_mask = BIT(priv->emac_port);
+
+ err = cpsw_ale_del_mcast(cpsw->ale, mdb->addr, del_mask,
+ ALE_VLAN, mdb->vid);
+ dev_dbg(priv->dev, "MDB del: %s: vid %u:%pM ports: %X\n",
+ priv->ndev->name, mdb->vid, mdb->addr, del_mask);
+
+ return err;
+}
+
+static int cpsw_port_obj_add(struct net_device *ndev,
+ const struct switchdev_obj *obj,
+ struct switchdev_trans *trans,
+ struct netlink_ext_ack *extack)
+{
+ struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
+ struct switchdev_obj_port_mdb *mdb = SWITCHDEV_OBJ_PORT_MDB(obj);
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ int err = 0;
+
+ dev_dbg(priv->dev, "obj_add: id %u port: %u\n",
+ obj->id, priv->emac_port);
+
+ switch (obj->id) {
+ case SWITCHDEV_OBJ_ID_PORT_VLAN:
+ err = cpsw_port_vlans_add(priv, vlan, trans);
+ break;
+ case SWITCHDEV_OBJ_ID_PORT_MDB:
+ case SWITCHDEV_OBJ_ID_HOST_MDB:
+ err = cpsw_port_mdb_add(priv, mdb, trans);
+ break;
+ default:
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ return err;
+}
+
+static int cpsw_port_obj_del(struct net_device *ndev,
+ const struct switchdev_obj *obj)
+{
+ struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
+ struct switchdev_obj_port_mdb *mdb = SWITCHDEV_OBJ_PORT_MDB(obj);
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ int err = 0;
+
+ dev_dbg(priv->dev, "obj_del: id %u port: %u\n",
+ obj->id, priv->emac_port);
+
+ switch (obj->id) {
+ case SWITCHDEV_OBJ_ID_PORT_VLAN:
+ err = cpsw_port_vlans_del(priv, vlan);
+ break;
+ case SWITCHDEV_OBJ_ID_PORT_MDB:
+ case SWITCHDEV_OBJ_ID_HOST_MDB:
+ err = cpsw_port_mdb_del(priv, mdb);
+ break;
+ default:
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ return err;
+}
+
+static void cpsw_fdb_offload_notify(struct net_device *ndev,
+ struct switchdev_notifier_fdb_info *rcv)
+{
+ struct switchdev_notifier_fdb_info info;
+
+ info.addr = rcv->addr;
+ info.vid = rcv->vid;
+ info.offloaded = true;
+ call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED,
+ ndev, &info.info, NULL);
+}
+
+static void cpsw_switchdev_event_work(struct work_struct *work)
+{
+ struct cpsw_switchdev_event_work *switchdev_work =
+ container_of(work, struct cpsw_switchdev_event_work, work);
+ struct cpsw_priv *priv = switchdev_work->priv;
+ struct switchdev_notifier_fdb_info *fdb;
+ struct cpsw_common *cpsw = priv->cpsw;
+ int port = priv->emac_port;
+
+ rtnl_lock();
+ switch (switchdev_work->event) {
+ case SWITCHDEV_FDB_ADD_TO_DEVICE:
+ fdb = &switchdev_work->fdb_info;
+
+ dev_dbg(cpsw->dev, "cpsw_fdb_add: MACID = %pM vid = %u flags = %u %u -- port %d\n",
+ fdb->addr, fdb->vid, fdb->added_by_user,
+ fdb->offloaded, port);
+
+ if (!fdb->added_by_user)
+ break;
+ if (memcmp(priv->mac_addr, (u8 *)fdb->addr, ETH_ALEN) == 0)
+ port = HOST_PORT_NUM;
+
+ cpsw_ale_add_ucast(cpsw->ale, (u8 *)fdb->addr, port,
+ fdb->vid ? ALE_VLAN : 0, fdb->vid);
+ cpsw_fdb_offload_notify(priv->ndev, fdb);
+ break;
+ case SWITCHDEV_FDB_DEL_TO_DEVICE:
+ fdb = &switchdev_work->fdb_info;
+
+ dev_dbg(cpsw->dev, "cpsw_fdb_del: MACID = %pM vid = %u flags = %u %u -- port %d\n",
+ fdb->addr, fdb->vid, fdb->added_by_user,
+ fdb->offloaded, port);
+
+ if (!fdb->added_by_user)
+ break;
+ if (memcmp(priv->mac_addr, (u8 *)fdb->addr, ETH_ALEN) == 0)
+ port = HOST_PORT_NUM;
+
+ cpsw_ale_del_ucast(cpsw->ale, (u8 *)fdb->addr, port,
+ fdb->vid ? ALE_VLAN : 0, fdb->vid);
+ break;
+ default:
+ break;
+ }
+ rtnl_unlock();
+
+ kfree(switchdev_work->fdb_info.addr);
+ kfree(switchdev_work);
+ dev_put(priv->ndev);
+}
+
+/* called under rcu_read_lock() */
+static int cpsw_switchdev_event(struct notifier_block *unused,
+ unsigned long event, void *ptr)
+{
+ struct net_device *ndev = switchdev_notifier_info_to_dev(ptr);
+ struct switchdev_notifier_fdb_info *fdb_info = ptr;
+ struct cpsw_switchdev_event_work *switchdev_work;
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ int err;
+
+ if (event == SWITCHDEV_PORT_ATTR_SET) {
+ err = switchdev_handle_port_attr_set(ndev, ptr,
+ cpsw_port_dev_check,
+ cpsw_port_attr_set);
+ return notifier_from_errno(err);
+ }
+
+ if (!cpsw_port_dev_check(ndev))
+ return NOTIFY_DONE;
+
+ switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
+ if (WARN_ON(!switchdev_work))
+ return NOTIFY_BAD;
+
+ INIT_WORK(&switchdev_work->work, cpsw_switchdev_event_work);
+ switchdev_work->priv = priv;
+ 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);
+ dev_hold(ndev);
+ break;
+ default:
+ kfree(switchdev_work);
+ return NOTIFY_DONE;
+ }
+
+ queue_work(system_long_wq, &switchdev_work->work);
+
+ return NOTIFY_DONE;
+
+err_addr_alloc:
+ kfree(switchdev_work);
+ return NOTIFY_BAD;
+}
+
+static struct notifier_block cpsw_switchdev_notifier = {
+ .notifier_call = cpsw_switchdev_event,
+};
+
+static int cpsw_switchdev_blocking_event(struct notifier_block *unused,
+ unsigned long event, void *ptr)
+{
+ struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
+ int err;
+
+ switch (event) {
+ case SWITCHDEV_PORT_OBJ_ADD:
+ err = switchdev_handle_port_obj_add(dev, ptr,
+ cpsw_port_dev_check,
+ cpsw_port_obj_add);
+ return notifier_from_errno(err);
+ case SWITCHDEV_PORT_OBJ_DEL:
+ err = switchdev_handle_port_obj_del(dev, ptr,
+ cpsw_port_dev_check,
+ cpsw_port_obj_del);
+ return notifier_from_errno(err);
+ case SWITCHDEV_PORT_ATTR_SET:
+ err = switchdev_handle_port_attr_set(dev, ptr,
+ cpsw_port_dev_check,
+ cpsw_port_attr_set);
+ return notifier_from_errno(err);
+ default:
+ break;
+ }
+
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block cpsw_switchdev_bl_notifier = {
+ .notifier_call = cpsw_switchdev_blocking_event,
+};
+
+int cpsw_switchdev_register_notifiers(struct cpsw_common *cpsw)
+{
+ int ret = 0;
+
+ ret = register_switchdev_notifier(&cpsw_switchdev_notifier);
+ if (ret) {
+ dev_err(cpsw->dev, "register switchdev notifier fail ret:%d\n",
+ ret);
+ return ret;
+ }
+
+ ret = register_switchdev_blocking_notifier(&cpsw_switchdev_bl_notifier);
+ if (ret) {
+ dev_err(cpsw->dev, "register switchdev blocking notifier ret:%d\n",
+ ret);
+ unregister_switchdev_notifier(&cpsw_switchdev_notifier);
+ }
+
+ return ret;
+}
+
+void cpsw_switchdev_unregister_notifiers(struct cpsw_common *cpsw)
+{
+ unregister_switchdev_blocking_notifier(&cpsw_switchdev_bl_notifier);
+ unregister_switchdev_notifier(&cpsw_switchdev_notifier);
+}
new file mode 100644
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Texas Instruments Ethernet Switch Driver
+ */
+
+#ifndef DRIVERS_NET_ETHERNET_TI_CPSW_SWITCHDEV_H_
+#define DRIVERS_NET_ETHERNET_TI_CPSW_SWITCHDEV_H_
+
+#include <net/switchdev.h>
+
+bool cpsw_port_dev_check(const struct net_device *dev);
+int cpsw_switchdev_register_notifiers(struct cpsw_common *cpsw);
+void cpsw_switchdev_unregister_notifiers(struct cpsw_common *cpsw);
+
+#endif /* DRIVERS_NET_ETHERNET_TI_CPSW_SWITCHDEV_H_ */