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Date: Tue, 8 Aug 2023 10:17:06 +0800
From: Jiawen Wu <jiawenwu@...stnetic.com>
To: netdev@...r.kernel.org,
davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
andrew@...n.ch,
hkallweit1@...il.com,
linux@...linux.org.uk,
Jose.Abreu@...opsys.com,
rmk+kernel@...linux.org.uk
Cc: mengyuanlou@...-swift.com,
Jiawen Wu <jiawenwu@...stnetic.com>
Subject: [PATCH net-next v2 5/7] net: txgbe: support switching mode to 1000BASE-X and SGMII
Disable data path before PCS VR reset while switching PCS mode, to prevent
the blocking of data path. Enable AN interrupt for CL37 auto-negotiation.
Signed-off-by: Jiawen Wu <jiawenwu@...stnetic.com>
---
drivers/net/ethernet/wangxun/libwx/wx_type.h | 2 ++
drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c | 28 +++++++++++++++++
drivers/net/ethernet/wangxun/txgbe/txgbe_hw.h | 2 ++
.../net/ethernet/wangxun/txgbe/txgbe_phy.c | 30 ++++++++++++++++++-
4 files changed, 61 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index 1de88a33a698..50b92cfb46a0 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -205,6 +205,8 @@
#define WX_TSC_CTL 0x1D000
#define WX_TSC_CTL_TX_DIS BIT(1)
#define WX_TSC_CTL_TSEC_DIS BIT(0)
+#define WX_TSC_ST 0x1D004
+#define WX_TSC_ST_SECTX_RDY BIT(0)
#define WX_TSC_BUF_AE 0x1D00C
#define WX_TSC_BUF_AE_THR GENMASK(9, 0)
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
index 6e130d1f7a7b..90168aab11ae 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
@@ -13,6 +13,34 @@
#include "txgbe_type.h"
#include "txgbe_hw.h"
+/**
+ * txgbe_disable_sec_tx_path - Stops the transmit data path
+ * @wx: pointer to hardware structure
+ *
+ * Stops the transmit data path and waits for the HW to internally empty
+ * the tx security block
+ **/
+int txgbe_disable_sec_tx_path(struct wx *wx)
+{
+ int val;
+
+ wr32m(wx, WX_TSC_CTL, WX_TSC_CTL_TX_DIS, WX_TSC_CTL_TX_DIS);
+ return read_poll_timeout(rd32, val, val & WX_TSC_ST_SECTX_RDY,
+ 1000, 20000, false, wx, WX_TSC_ST);
+}
+
+/**
+ * txgbe_enable_sec_tx_path - Enables the transmit data path
+ * @wx: pointer to hardware structure
+ *
+ * Enables the transmit data path.
+ **/
+void txgbe_enable_sec_tx_path(struct wx *wx)
+{
+ wr32m(wx, WX_TSC_CTL, WX_TSC_CTL_TX_DIS, 0);
+ WX_WRITE_FLUSH(wx);
+}
+
/**
* txgbe_init_thermal_sensor_thresh - Inits thermal sensor thresholds
* @wx: pointer to hardware structure
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.h b/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.h
index e82f65dff8a6..abc729eb187a 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.h
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.h
@@ -4,6 +4,8 @@
#ifndef _TXGBE_HW_H_
#define _TXGBE_HW_H_
+int txgbe_disable_sec_tx_path(struct wx *wx);
+void txgbe_enable_sec_tx_path(struct wx *wx);
int txgbe_read_pba_string(struct wx *wx, u8 *pba_num, u32 pba_num_size);
int txgbe_validate_eeprom_checksum(struct wx *wx, u16 *checksum_val);
int txgbe_reset_hw(struct wx *wx);
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
index 8779645a54be..bcb2beaa4005 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
@@ -18,6 +18,7 @@
#include "../libwx/wx_hw.h"
#include "txgbe_type.h"
#include "txgbe_phy.h"
+#include "txgbe_hw.h"
static int txgbe_swnodes_register(struct txgbe *txgbe)
{
@@ -210,8 +211,32 @@ static void txgbe_mac_link_up(struct phylink_config *config,
wr32(wx, WX_MAC_WDG_TIMEOUT, wdg);
}
+static int txgbe_mac_prepare(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);
+ wr32m(wx, WX_MAC_RX_CFG, WX_MAC_RX_CFG_RE, 0);
+
+ return txgbe_disable_sec_tx_path(wx);
+}
+
+static int txgbe_mac_finish(struct phylink_config *config, unsigned int mode,
+ phy_interface_t interface)
+{
+ struct wx *wx = netdev_priv(to_net_dev(config->dev));
+
+ txgbe_enable_sec_tx_path(wx);
+ wr32m(wx, WX_MAC_RX_CFG, WX_MAC_RX_CFG_RE, WX_MAC_RX_CFG_RE);
+
+ return 0;
+}
+
static const struct phylink_mac_ops txgbe_mac_ops = {
.mac_select_pcs = txgbe_phylink_mac_select,
+ .mac_prepare = txgbe_mac_prepare,
+ .mac_finish = txgbe_mac_finish,
.mac_config = txgbe_mac_config,
.mac_link_down = txgbe_mac_link_down,
.mac_link_up = txgbe_mac_link_up,
@@ -234,6 +259,8 @@ static int txgbe_phylink_init(struct txgbe *txgbe)
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);
+ __set_bit(PHY_INTERFACE_MODE_SGMII, 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))
@@ -431,7 +458,8 @@ 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)) {
+ if (eicr & (TXGBE_PX_MISC_ETH_LK | TXGBE_PX_MISC_ETH_LKDN |
+ TXGBE_PX_MISC_ETH_AN)) {
u32 reg = rd32(wx, TXGBE_CFG_PORT_ST);
phylink_mac_change(txgbe->phylink, !!(reg & TXGBE_CFG_PORT_ST_LINK_UP));
--
2.27.0
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