diff mbox series

[v5,8/9] net: stmmac: dwmac-loongson: Disable flow control for GMAC

Message ID 286060399a5b9787a86053c10c5fad93cbf5d0cc.1699533745.git.siyanteng@loongson.cn (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series stmmac: Add Loongson platform support | expand

Checks

Context Check Description
netdev/series_format warning Target tree name not specified in the subject
netdev/tree_selection success Guessed tree name to be net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1161 this patch: 1161
netdev/cc_maintainers warning 9 maintainers not CCed: ahalaney@redhat.com kuba@kernel.org bartosz.golaszewski@linaro.org linux-stm32@st-md-mailman.stormreply.com edumazet@google.com mcoquelin.stm32@gmail.com linux-arm-kernel@lists.infradead.org pabeni@redhat.com horms@kernel.org
netdev/build_clang success Errors and warnings before: 1161 this patch: 1161
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1189 this patch: 1189
netdev/checkpatch warning WARNING: line length of 82 exceeds 80 columns WARNING: line length of 88 exceeds 80 columns
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Yanteng Si Nov. 10, 2023, 9:27 a.m. UTC 
Loongson GMAC does not support Flow Control feature. Set flags to
disable it.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Feiyang Chen <chenfeiyang@loongson.cn>
Signed-off-by: Yinggang Gu <guyinggang@loongson.cn>
---
 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 mbox series

Patch

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index 575ec2d96741..306b8d53e19c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
@@ -171,6 +171,8 @@  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 aafc75fa14a0..b5cbdbdabebd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1235,9 +1235,9 @@  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 2b8f5dc09920..f3e1b68c2946 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -222,6 +222,7 @@  struct dwmac4_addrs {
 #define STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY	BIT(12)
 #define STMMAC_FLAG_DISABLE_HALF_DUPLEX	BIT(13)
 #define STMMAC_FLAG_DISABLE_FORCE_1000	BIT(14)
+#define STMMAC_FLAG_DISABLE_FLOW_CONTROL	BIT(15)
 
 struct plat_stmmacenet_data {
 	int bus_id;