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Message-Id: <20230403064528.343866-7-jiawenwu@trustnetic.com>
Date: Mon, 3 Apr 2023 14:45:28 +0800
From: Jiawen Wu <jiawenwu@...stnetic.com>
To: netdev@...r.kernel.org, linux@...linux.org.uk
Cc: mengyuanlou@...-swift.com, Jiawen Wu <jiawenwu@...stnetic.com>
Subject: [PATCH net-next 6/6] net: txgbe: Support phylink MAC layer
Add phylink support to Wangxun 10Gb Ethernet controller, for the 10GBASE-R
and 1000BASE-X interfaces.
Signed-off-by: Jiawen Wu <jiawenwu@...stnetic.com>
---
.../ethernet/wangxun/txgbe/txgbe_ethtool.c | 34 ++++++
.../net/ethernet/wangxun/txgbe/txgbe_main.c | 20 ++--
.../net/ethernet/wangxun/txgbe/txgbe_phy.c | 110 +++++++++++++++++-
.../net/ethernet/wangxun/txgbe/txgbe_type.h | 5 +
4 files changed, 156 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_ethtool.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_ethtool.c
index d914e9a05404..43ca84c90637 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_ethtool.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_ethtool.c
@@ -6,11 +6,45 @@
#include <linux/netdevice.h>
#include "../libwx/wx_ethtool.h"
+#include "../libwx/wx_type.h"
+#include "txgbe_type.h"
#include "txgbe_ethtool.h"
+static int txgbe_nway_reset(struct net_device *netdev)
+{
+ struct wx *wx = netdev_priv(netdev);
+ struct txgbe *txgbe;
+
+ txgbe = (struct txgbe *)wx->priv;
+ return phylink_ethtool_nway_reset(txgbe->phylink);
+}
+
+static int txgbe_get_link_ksettings(struct net_device *netdev,
+ struct ethtool_link_ksettings *cmd)
+{
+ struct wx *wx = netdev_priv(netdev);
+ struct txgbe *txgbe;
+
+ txgbe = (struct txgbe *)wx->priv;
+ return phylink_ethtool_ksettings_get(txgbe->phylink, cmd);
+}
+
+static int txgbe_set_link_ksettings(struct net_device *netdev,
+ const struct ethtool_link_ksettings *cmd)
+{
+ struct wx *wx = netdev_priv(netdev);
+ struct txgbe *txgbe;
+
+ txgbe = (struct txgbe *)wx->priv;
+ return phylink_ethtool_ksettings_set(txgbe->phylink, cmd);
+}
+
static const struct ethtool_ops txgbe_ethtool_ops = {
.get_drvinfo = wx_get_drvinfo,
+ .nway_reset = txgbe_nway_reset,
.get_link = ethtool_op_get_link,
+ .get_link_ksettings = txgbe_get_link_ksettings,
+ .set_link_ksettings = txgbe_set_link_ksettings,
};
void txgbe_set_ethtool_ops(struct net_device *netdev)
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
index caaefc20afb9..e033ed8409ce 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -7,6 +7,7 @@
#include <linux/netdevice.h>
#include <linux/string.h>
#include <linux/etherdevice.h>
+#include <linux/phylink.h>
#include <net/ip.h>
#include <linux/if_vlan.h>
@@ -206,7 +207,7 @@ static int txgbe_request_irq(struct wx *wx)
static void txgbe_up_complete(struct wx *wx)
{
- u32 reg;
+ struct txgbe *txgbe = (struct txgbe *)wx->priv;
wx_control_hw(wx, true);
wx_configure_vectors(wx);
@@ -215,23 +216,15 @@ static void txgbe_up_complete(struct wx *wx)
smp_mb__before_atomic();
wx_napi_enable_all(wx);
+ phylink_start(txgbe->phylink);
+
/* clear any pending interrupts, may auto mask */
rd32(wx, WX_PX_IC);
rd32(wx, WX_PX_MISC_IC);
txgbe_irq_enable(wx, true);
- /* Configure MAC Rx and Tx when link is up */
- reg = rd32(wx, WX_MAC_RX_CFG);
- wr32(wx, WX_MAC_RX_CFG, reg);
- wr32(wx, WX_MAC_PKT_FLT, WX_MAC_PKT_FLT_PR);
- reg = rd32(wx, WX_MAC_WDG_TIMEOUT);
- wr32(wx, WX_MAC_WDG_TIMEOUT, reg);
- reg = rd32(wx, WX_MAC_TX_CFG);
- wr32(wx, WX_MAC_TX_CFG, (reg & ~WX_MAC_TX_CFG_SPEED_MASK) | WX_MAC_TX_CFG_SPEED_10G);
-
/* enable transmits */
netif_tx_start_all_queues(wx->netdev);
- netif_carrier_on(wx->netdev);
}
static void txgbe_reset(struct wx *wx)
@@ -265,7 +258,6 @@ static void txgbe_disable_device(struct wx *wx)
wx_disable_rx_queue(wx, wx->rx_ring[i]);
netif_tx_stop_all_queues(netdev);
- netif_carrier_off(netdev);
netif_tx_disable(netdev);
wx_irq_disable(wx);
@@ -296,8 +288,12 @@ static void txgbe_disable_device(struct wx *wx)
static void txgbe_down(struct wx *wx)
{
+ struct txgbe *txgbe = (struct txgbe *)wx->priv;
+
txgbe_disable_device(wx);
txgbe_reset(wx);
+ if (txgbe->phylink)
+ phylink_stop(txgbe->phylink);
wx_clean_all_tx_rings(wx);
wx_clean_all_rx_rings(wx);
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
index a00651ba021f..fee7fe175734 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
@@ -13,6 +13,7 @@
#include <linux/pci.h>
#include "../libwx/wx_type.h"
+#include "../libwx/wx_lib.h"
#include "../libwx/wx_hw.h"
#include "txgbe_type.h"
#include "txgbe_phy.h"
@@ -407,6 +408,98 @@ static int txgbe_mdio_pcs_init(struct txgbe *txgbe)
return 0;
}
+static struct phylink_pcs *txgbe_phylink_mac_select(struct phylink_config *config,
+ phy_interface_t interface)
+{
+ struct wx *wx = netdev_priv(to_net_dev(config->dev));
+ struct txgbe *txgbe = (struct txgbe *)wx->priv;
+
+ return &txgbe->pcs;
+}
+
+static void txgbe_mac_config(struct phylink_config *config, unsigned int mode,
+ const struct phylink_link_state *state)
+{
+}
+
+static void txgbe_mac_link_down(struct phylink_config *config,
+ unsigned int mode, phy_interface_t interface)
+{
+ struct wx *wx = netdev_priv(to_net_dev(config->dev));
+
+ wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0);
+}
+
+static void txgbe_mac_link_up(struct phylink_config *config,
+ struct phy_device *phy,
+ unsigned int mode, phy_interface_t interface,
+ int speed, int duplex,
+ bool tx_pause, bool rx_pause)
+{
+ struct wx *wx = netdev_priv(to_net_dev(config->dev));
+ u32 txcfg, rxcfg, wdg;
+
+ txcfg = rd32(wx, WX_MAC_TX_CFG);
+ txcfg &= ~WX_MAC_TX_CFG_SPEED_MASK;
+
+ switch (speed) {
+ case SPEED_10000:
+ txcfg |= WX_MAC_TX_CFG_SPEED_10G;
+ break;
+ case SPEED_1000:
+ case SPEED_100:
+ case SPEED_10:
+ txcfg |= WX_MAC_TX_CFG_SPEED_1G;
+ break;
+ default:
+ break;
+ }
+
+ wr32(wx, WX_MAC_TX_CFG, txcfg | WX_MAC_TX_CFG_TE);
+
+ /* Re configure MAC Rx */
+ rxcfg = rd32(wx, WX_MAC_RX_CFG);
+ wr32(wx, WX_MAC_RX_CFG, rxcfg);
+ wr32(wx, WX_MAC_PKT_FLT, WX_MAC_PKT_FLT_PR);
+ wdg = rd32(wx, WX_MAC_WDG_TIMEOUT);
+ wr32(wx, WX_MAC_WDG_TIMEOUT, wdg);
+}
+
+static const struct phylink_mac_ops txgbe_mac_ops = {
+ .mac_select_pcs = txgbe_phylink_mac_select,
+ .mac_config = txgbe_mac_config,
+ .mac_link_down = txgbe_mac_link_down,
+ .mac_link_up = txgbe_mac_link_up,
+};
+
+static int txgbe_phylink_init(struct txgbe *txgbe)
+{
+ struct phylink_config *config;
+ struct fwnode_handle *fwnode;
+ struct wx *wx = txgbe->wx;
+ phy_interface_t phy_mode;
+ struct phylink *phylink;
+
+ config = devm_kzalloc(&wx->pdev->dev, sizeof(*config), GFP_KERNEL);
+ if (!config)
+ return -ENOMEM;
+
+ config->dev = &wx->netdev->dev;
+ config->type = PHYLINK_NETDEV;
+ config->mac_capabilities = MAC_10000FD | MAC_1000FD | MAC_SYM_PAUSE | MAC_ASYM_PAUSE;
+ phy_mode = PHY_INTERFACE_MODE_10GBASER;
+ __set_bit(PHY_INTERFACE_MODE_10GBASER, config->supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_1000BASEX, config->supported_interfaces);
+ fwnode = software_node_fwnode(txgbe->nodes.group[SWNODE_PHYLINK]);
+ phylink = phylink_create(config, fwnode, phy_mode, &txgbe_mac_ops);
+ if (IS_ERR(phylink))
+ return PTR_ERR(phylink);
+
+ txgbe->phylink = phylink;
+
+ return 0;
+}
+
static void txgbe_i2c_start(struct wx *wx, u16 dev_addr)
{
wr32(wx, TXGBE_I2C_ENABLE, 0);
@@ -680,7 +773,9 @@ static void txgbe_irq_handler(struct irq_desc *desc)
struct gpio_chip *gc = txgbe->gpio;
irq_hw_number_t hwirq;
unsigned long gpioirq;
- u32 gpio;
+ u32 gpio, eicr, reg;
+
+ eicr = wx_misc_isb(wx, WX_ISB_MISC);
chained_irq_enter(chip, desc);
@@ -696,6 +791,11 @@ static void txgbe_irq_handler(struct irq_desc *desc)
chained_irq_exit(chip, desc);
+ if (eicr & (TXGBE_PX_MISC_ETH_LK | TXGBE_PX_MISC_ETH_LKDN)) {
+ reg = rd32(wx, TXGBE_CFG_PORT_ST);
+ phylink_mac_change(txgbe->phylink, !!(reg & TXGBE_CFG_PORT_ST_LINK_UP));
+ }
+
/* unmask interrupt */
if (netif_running(wx->netdev))
wx_intr_enable(wx, TXGBE_INTR_MISC(wx));
@@ -787,6 +887,12 @@ int txgbe_init_phy(struct txgbe *txgbe)
goto err;
}
+ ret = txgbe_phylink_init(txgbe);
+ if (ret) {
+ wx_err(txgbe->wx, "failed to init phylink\n");
+ goto err;
+ }
+
ret = txgbe_i2c_adapter_add(txgbe);
if (ret) {
wx_err(txgbe->wx, "failed to init i2c interface: %d\n", ret);
@@ -815,6 +921,8 @@ int txgbe_init_phy(struct txgbe *txgbe)
void txgbe_remove_phy(struct txgbe *txgbe)
{
+ if (txgbe->phylink)
+ phylink_destroy(txgbe->phylink);
if (txgbe->mdiodev)
mdio_device_free(txgbe->mdiodev);
if (txgbe->sfp_dev)
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
index d121edadfd09..ad3e426e49a0 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
@@ -83,6 +83,10 @@
TXGBE_PX_MISC_INT_ERR | \
TXGBE_PX_MISC_GPIO)
+/* Port cfg registers */
+#define TXGBE_CFG_PORT_ST 0x14404
+#define TXGBE_CFG_PORT_ST_LINK_UP BIT(0)
+
/* I2C registers */
#define TXGBE_I2C_CON 0x14900 /* I2C Control */
#define TXGBE_I2C_CON_SLAVE_DISABLE BIT(6)
@@ -244,6 +248,7 @@ struct txgbe {
struct txgbe_nodes nodes;
struct mdio_device *mdiodev;
struct phylink_pcs pcs;
+ struct phylink *phylink;
struct i2c_adapter *i2c_adap;
struct gpio_chip *gpio;
struct platform_device *sfp_dev;
--
2.27.0
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