From: Stefan Chulski stefanc@marvell.com
Issue: - Network stuck if autonegotion fails.
Issue root cause:
- When autonegotiation fails during port open procedure, the packet processor configuration does not finish and open procedure exits with error. - However, this doesn't prevent u-boot network framework from calling send and receive procedures. - Using transmit and receive functions of misconfigured packet processor will cause traffic to get stuck.
Fix:
- Continue packet processor configuration even if autonegotiation fails. Only error message is triggered in this case. - Exit transmit and receive functions if there is no PHY link indication. - U-boot network framework now calls open procedure again during next transmit initiation.
Signed-off-by: Stefan Chulski stefanc@marvell.com Reviewed-by: Igal Liberman igall@marvell.com Tested-by: Igal Liberman igall@marvell.com --- drivers/net/mvpp2.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-)
diff --git a/drivers/net/mvpp2.c b/drivers/net/mvpp2.c index bd89725e77..f36c8236b1 100644 --- a/drivers/net/mvpp2.c +++ b/drivers/net/mvpp2.c @@ -4494,7 +4494,7 @@ static void mvpp2_stop_dev(struct mvpp2_port *port) gop_port_enable(port, 0); }
-static int mvpp2_phy_connect(struct udevice *dev, struct mvpp2_port *port) +static void mvpp2_phy_connect(struct udevice *dev, struct mvpp2_port *port) { struct phy_device *phy_dev;
@@ -4504,7 +4504,7 @@ static int mvpp2_phy_connect(struct udevice *dev, struct mvpp2_port *port) port->phy_dev = phy_dev; if (!phy_dev) { netdev_err(port->dev, "cannot connect to phy\n"); - return -ENODEV; + return; } phy_dev->supported &= PHY_GBIT_FEATURES; phy_dev->advertising = phy_dev->supported; @@ -4516,18 +4516,14 @@ static int mvpp2_phy_connect(struct udevice *dev, struct mvpp2_port *port)
phy_config(phy_dev); phy_startup(phy_dev); - if (!phy_dev->link) { + if (!phy_dev->link) printf("%s: No link\n", phy_dev->dev->name); - return -1; - } - - port->init = 1; + else + port->init = 1; } else { mvpp2_egress_enable(port); mvpp2_ingress_enable(port); } - - return 0; }
static int mvpp2_open(struct udevice *dev, struct mvpp2_port *port) @@ -4567,10 +4563,7 @@ static int mvpp2_open(struct udevice *dev, struct mvpp2_port *port) }
if (port->phy_node) { - err = mvpp2_phy_connect(dev, port); - if (err < 0) - return err; - + mvpp2_phy_connect(dev, port); mvpp2_link_event(port); } else { mvpp2_egress_enable(port); @@ -5175,6 +5168,10 @@ static int mvpp2_recv(struct udevice *dev, int flags, uchar **packetp) struct mvpp2_rx_queue *rxq; u8 *data;
+ if (port->phy_node) + if (!port->phy_dev->link) + return 0; + /* Process RX packets */ rxq = port->rxqs[0];
@@ -5240,6 +5237,10 @@ static int mvpp2_send(struct udevice *dev, void *packet, int length) int tx_done; int timeout;
+ if (port->phy_node) + if (!port->phy_dev->link) + return 0; + txq = port->txqs[0]; aggr_txq = &port->priv->aggr_txqs[smp_processor_id()];