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Message-Id: <20251014061726.36660-3-jiawenwu@trustnetic.com>
Date: Tue, 14 Oct 2025 14:17:25 +0800
From: Jiawen Wu <jiawenwu@...stnetic.com>
To: netdev@...r.kernel.org,
Andrew Lunn <andrew+netdev@...n.ch>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Simon Horman <horms@...nel.org>,
"Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Cc: Mengyuan Lou <mengyuanlou@...-swift.com>,
Jiawen Wu <jiawenwu@...stnetic.com>
Subject: [PATCH net-next v2 2/3] net: txgbe: optimize the flow to setup PHY for AML devices
To adapt to new firmware for AML devices, the driver should send the
"SET_LINK_CMD" to the firmware only once when switching PHY interface
mode, and no longer needs to re-trigger PHY configuration based on the
RX signal interrupt (TXGBE_GPIOBIT_3).
In previous firmware versions, the PHY was configured only after receiving
"SET_LINK_CMD", and might remain incomplete if the RX signal was lost.
To handle this case, the driver used TXGBE_GPIOBIT_3 interrupt to resend
the command. This workaround is no longer necessary with the new firmware.
And the unknown link speed is permitted in the mailbox buffer.
Signed-off-by: Jiawen Wu <jiawenwu@...stnetic.com>
---
drivers/net/ethernet/wangxun/libwx/wx_type.h | 2 -
.../net/ethernet/wangxun/txgbe/txgbe_aml.c | 50 ++++++-------------
.../net/ethernet/wangxun/txgbe/txgbe_type.h | 1 +
3 files changed, 15 insertions(+), 38 deletions(-)
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index d89b9b8a0a2c..4880268b620e 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -1271,8 +1271,6 @@ struct wx {
/* PHY stuff */
bool notify_down;
- int adv_speed;
- int adv_duplex;
unsigned int link;
int speed;
int duplex;
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_aml.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_aml.c
index dc87ccad9652..1da92431c324 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_aml.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_aml.c
@@ -19,8 +19,8 @@ void txgbe_gpio_init_aml(struct wx *wx)
{
u32 status;
- wr32(wx, WX_GPIO_INTTYPE_LEVEL, TXGBE_GPIOBIT_2 | TXGBE_GPIOBIT_3);
- wr32(wx, WX_GPIO_INTEN, TXGBE_GPIOBIT_2 | TXGBE_GPIOBIT_3);
+ wr32(wx, WX_GPIO_INTTYPE_LEVEL, TXGBE_GPIOBIT_2);
+ wr32(wx, WX_GPIO_INTEN, TXGBE_GPIOBIT_2);
status = rd32(wx, WX_GPIO_INTSTATUS);
for (int i = 0; i < 6; i++) {
@@ -42,11 +42,6 @@ irqreturn_t txgbe_gpio_irq_handler_aml(int irq, void *data)
wr32(wx, WX_GPIO_EOI, TXGBE_GPIOBIT_2);
wx_service_event_schedule(wx);
}
- if (status & TXGBE_GPIOBIT_3) {
- set_bit(WX_FLAG_NEED_LINK_CONFIG, wx->flags);
- wx_service_event_schedule(wx);
- wr32(wx, WX_GPIO_EOI, TXGBE_GPIOBIT_3);
- }
wr32(wx, WX_GPIO_INTMASK, 0);
return IRQ_HANDLED;
@@ -96,6 +91,9 @@ static int txgbe_set_phy_link_hostif(struct wx *wx, int speed, int autoneg, int
case SPEED_10000:
buffer.speed = TXGBE_LINK_SPEED_10GB_FULL;
break;
+ default:
+ buffer.speed = TXGBE_LINK_SPEED_UNKNOWN;
+ break;
}
buffer.fec_mode = TXGBE_PHY_FEC_AUTO;
@@ -106,19 +104,18 @@ static int txgbe_set_phy_link_hostif(struct wx *wx, int speed, int autoneg, int
WX_HI_COMMAND_TIMEOUT, true);
}
-static void txgbe_get_link_capabilities(struct wx *wx)
+static void txgbe_get_link_capabilities(struct wx *wx, int *speed, int *duplex)
{
struct txgbe *txgbe = wx->priv;
if (test_bit(PHY_INTERFACE_MODE_25GBASER, txgbe->sfp_interfaces))
- wx->adv_speed = SPEED_25000;
+ *speed = SPEED_25000;
else if (test_bit(PHY_INTERFACE_MODE_10GBASER, txgbe->sfp_interfaces))
- wx->adv_speed = SPEED_10000;
+ *speed = SPEED_10000;
else
- wx->adv_speed = SPEED_UNKNOWN;
+ *speed = SPEED_UNKNOWN;
- wx->adv_duplex = wx->adv_speed == SPEED_UNKNOWN ?
- DUPLEX_HALF : DUPLEX_FULL;
+ *duplex = *speed == SPEED_UNKNOWN ? DUPLEX_HALF : DUPLEX_FULL;
}
static void txgbe_get_phy_link(struct wx *wx, int *speed)
@@ -138,23 +135,11 @@ static void txgbe_get_phy_link(struct wx *wx, int *speed)
int txgbe_set_phy_link(struct wx *wx)
{
- int speed, err;
- u32 gpio;
+ int speed, duplex, err;
- /* Check RX signal */
- gpio = rd32(wx, WX_GPIO_EXT);
- if (gpio & TXGBE_GPIOBIT_3)
- return -ENODEV;
+ txgbe_get_link_capabilities(wx, &speed, &duplex);
- txgbe_get_link_capabilities(wx);
- if (wx->adv_speed == SPEED_UNKNOWN)
- return -ENODEV;
-
- txgbe_get_phy_link(wx, &speed);
- if (speed == wx->adv_speed)
- return 0;
-
- err = txgbe_set_phy_link_hostif(wx, wx->adv_speed, 0, wx->adv_duplex);
+ err = txgbe_set_phy_link_hostif(wx, speed, 0, duplex);
if (err) {
wx_err(wx, "Failed to setup link\n");
return err;
@@ -230,14 +215,7 @@ int txgbe_identify_sfp(struct wx *wx)
return -ENODEV;
}
- err = txgbe_sfp_to_linkmodes(wx, id);
- if (err)
- return err;
-
- if (gpio & TXGBE_GPIOBIT_3)
- set_bit(WX_FLAG_NEED_LINK_CONFIG, wx->flags);
-
- return 0;
+ return txgbe_sfp_to_linkmodes(wx, id);
}
void txgbe_setup_link(struct wx *wx)
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
index 9d53c7413f7b..b9a4ba48f5b9 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
@@ -314,6 +314,7 @@ void txgbe_up(struct wx *wx);
int txgbe_setup_tc(struct net_device *dev, u8 tc);
void txgbe_do_reset(struct net_device *netdev);
+#define TXGBE_LINK_SPEED_UNKNOWN 0
#define TXGBE_LINK_SPEED_10GB_FULL 4
#define TXGBE_LINK_SPEED_25GB_FULL 0x10
--
2.48.1
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