[PATCH net-next v7 8/9] net: stmmac: dwmac-loongson: Disable flow control for GMAC
From: Yanteng Si <hidden>
Date: 2023-12-19 14:28:22
Subsystem:
networking drivers, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Loongson GMAC does not support Flow Control feature. Set flags to disable it. Signed-off-by: Yanteng Si <redacted> Signed-off-by: Feiyang Chen <redacted> Signed-off-by: Yinggang Gu <redacted> --- drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c | 2 ++ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 6 +++--- include/linux/stmmac.h | 1 + 3 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index 9e4953c7e4e0..77c9bcb66a8e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c@@ -160,6 +160,8 @@ static int loongson_gmac_config(struct pci_dev *pdev, break; } + plat->flags |= FIELD_PREP(STMMAC_FLAG_DISABLE_FLOW_CONTROL, 1); + return ret; }
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 9764d2ab7e46..d94f61742772 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c@@ -1236,9 +1236,9 @@ static int stmmac_phy_setup(struct stmmac_priv *priv) xpcs_get_interfaces(priv->hw->xpcs, priv->phylink_config.supported_interfaces); - priv->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | - MAC_10FD | MAC_100FD | - MAC_1000FD; + priv->phylink_config.mac_capabilities = MAC_10FD | MAC_100FD | MAC_1000FD; + if (!FIELD_GET(STMMAC_FLAG_DISABLE_FLOW_CONTROL, priv->plat->flags)) + priv->phylink_config.mac_capabilities |= MAC_ASYM_PAUSE | MAC_SYM_PAUSE; stmmac_set_half_duplex(priv);
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index 067030cdb60f..5ece92e4d8c3 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h@@ -224,6 +224,7 @@ struct dwmac4_addrs { #define STMMAC_FLAG_HAS_LGMAC BIT(13) #define STMMAC_FLAG_DISABLE_HALF_DUPLEX BIT(14) #define STMMAC_FLAG_DISABLE_FORCE_1000 BIT(15) +#define STMMAC_FLAG_DISABLE_FLOW_CONTROL BIT(16) struct plat_stmmacenet_data { int bus_id;
--
2.31.4