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net: stmmac: FPE via ethtool + tc

PATCH Superseded Furong Xu 2 participants 9 messages Aug 13, 2024 – Aug 16, 2024

Subsystems (4)

v2 of 10 Superseded Latest is v10 →

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Furong Xu

author
#0 lore raw

v2 cover net: stmmac: FPE via ethtool + tc

Move the Frame Preemption(FPE) over to the new standard API which uses ethtool-mm/tc-mqprio/tc-taprio.

Changes in v2:
1. refactor FPE verification processe
2. suspend/resume and kselftest-ethtool_mm, all test cases passed
3. handle TC:TXQ remapping for DWMAC CORE4+

Furong Xu (7):
net: stmmac: move stmmac_fpe_cfg to stmmac_priv data
net: stmmac: drop stmmac_fpe_handshake
net: stmmac: refactor FPE verification processe
net: stmmac: configure FPE via ethtool-mm
net: stmmac: support fp parameter of tc-mqprio
net: stmmac: support fp parameter of tc-taprio
net: stmmac: silence FPE kernel logs

 .../net/ethernet/stmicro/stmmac/dwmac4_core.c |  10 +-
 drivers/net/ethernet/stmicro/stmmac/dwmac5.c  |  96 +++++++++-
 drivers/net/ethernet/stmicro/stmmac/dwmac5.h  |  11 +-
 .../ethernet/stmicro/stmmac/dwxgmac2_core.c   |   4 +-
 drivers/net/ethernet/stmicro/stmmac/hwif.h    |  20 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac.h  |  22 +++
 .../ethernet/stmicro/stmmac/stmmac_ethtool.c  | 103 +++++++++++
 .../net/ethernet/stmicro/stmmac/stmmac_main.c | 173 +++++++++---------
 .../net/ethernet/stmicro/stmmac/stmmac_tc.c   | 115 ++++++++----
 include/linux/stmmac.h                        |  28 ---
 10 files changed, 416 insertions(+), 166 deletions(-)
Signature · 1 line
2.34.1
author
#1 lore raw

PATCH v2 1/7 net: stmmac: move stmmac_fpe_cfg to stmmac_priv data

By moving the fpe_cfg field to the stmmac_priv data, stmmac_fpe_cfg becomes platform-data eventually, instead of a run-time config.

---
 drivers/net/ethernet/stmicro/stmmac/hwif.h    |  2 ++
 drivers/net/ethernet/stmicro/stmmac/stmmac.h  | 29 +++++++++++++++++++
 .../net/ethernet/stmicro/stmmac/stmmac_main.c | 20 ++++++-------
 .../net/ethernet/stmicro/stmmac/stmmac_tc.c   | 16 ++--------
 include/linux/stmmac.h                        | 28 ------------------
 5 files changed, 44 insertions(+), 51 deletions(-)
drivers/net/ethernet/stmicro/stmmac/hwif.h +2 -0
index 7e90f34b8c88..28dfc0054a3a 100644
@@ -31,6 +31,8 @@ struct stmmac_safety_stats;
 struct dma_desc;
 struct dma_extended_desc;
 struct dma_edesc;
+struct stmmac_fpe_cfg;
+enum stmmac_mpacket_type;
 
 /* Descriptors helpers */
 struct stmmac_desc_ops {
drivers/net/ethernet/stmicro/stmmac/stmmac.h +29 -0
index b23b920eedb1..2c2181febb39 100644
@@ -146,6 +146,33 @@ struct stmmac_channel {
 	u32 index;
 };
 
+/* FPE link state */
+enum stmmac_fpe_state {
+	FPE_STATE_OFF = 0,
+	FPE_STATE_CAPABLE = 1,
+	FPE_STATE_ENTERING_ON = 2,
+	FPE_STATE_ON = 3,
+};
+
+/* FPE link-partner hand-shaking mPacket type */
+enum stmmac_mpacket_type {
+	MPACKET_VERIFY = 0,
+	MPACKET_RESPONSE = 1,
+};
+
+enum stmmac_fpe_task_state_t {
+	__FPE_REMOVING,
+	__FPE_TASK_SCHED,
+};
+
+struct stmmac_fpe_cfg {
+	bool enable;				/* FPE enable */
+	bool hs_enable;				/* FPE handshake enable */
+	enum stmmac_fpe_state lp_fpe_state;	/* Link Partner FPE state */
+	enum stmmac_fpe_state lo_fpe_state;	/* Local station FPE state */
+	u32 fpe_csr;				/* MAC_FPE_CTRL_STS reg cache */
+};
+
 struct stmmac_tc_entry {
 	bool in_use;
 	bool in_hw;
@@ -339,6 +366,8 @@ struct stmmac_priv {
 	struct workqueue_struct *wq;
 	struct work_struct service_task;
 
+	struct stmmac_fpe_cfg fpe_cfg;
+
 	/* Workqueue for handling FPE hand-shaking */
 	unsigned long fpe_task_state;
 	struct workqueue_struct *fpe_wq;
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +10 -10
index d9fca8d1227c..529fe31f8b04 100644
@@ -968,7 +968,7 @@ static void stmmac_mac_config(struct phylink_config *config, unsigned int mode,
 
 static void stmmac_fpe_link_state_handle(struct stmmac_priv *priv, bool is_up)
 {
-	struct stmmac_fpe_cfg *fpe_cfg = priv->plat->fpe_cfg;
+	struct stmmac_fpe_cfg *fpe_cfg = &priv->fpe_cfg;
 	enum stmmac_fpe_state *lo_state = &fpe_cfg->lo_fpe_state;
 	enum stmmac_fpe_state *lp_state = &fpe_cfg->lp_fpe_state;
 	bool *hs_enable = &fpe_cfg->hs_enable;
@@ -3536,7 +3536,7 @@ static int stmmac_hw_setup(struct net_device *dev, bool ptp_register)
 	if (priv->dma_cap.fpesel) {
 		stmmac_fpe_start_wq(priv);
 
-		if (priv->plat->fpe_cfg->enable)
+		if (priv->fpe_cfg.enable)
 			stmmac_fpe_handshake(priv, true);
 	}
 
@@ -5982,7 +5982,7 @@ static int stmmac_set_features(struct net_device *netdev,
 
 static void stmmac_fpe_event_status(struct stmmac_priv *priv, int status)
 {
-	struct stmmac_fpe_cfg *fpe_cfg = priv->plat->fpe_cfg;
+	struct stmmac_fpe_cfg *fpe_cfg = &priv->fpe_cfg;
 	enum stmmac_fpe_state *lo_state = &fpe_cfg->lo_fpe_state;
 	enum stmmac_fpe_state *lp_state = &fpe_cfg->lp_fpe_state;
 	bool *hs_enable = &fpe_cfg->hs_enable;
@@ -7381,7 +7381,7 @@ static void stmmac_fpe_lp_task(struct work_struct *work)
 {
 	struct stmmac_priv *priv = container_of(work, struct stmmac_priv,
 						fpe_task);
-	struct stmmac_fpe_cfg *fpe_cfg = priv->plat->fpe_cfg;
+	struct stmmac_fpe_cfg *fpe_cfg = &priv->fpe_cfg;
 	enum stmmac_fpe_state *lo_state = &fpe_cfg->lo_fpe_state;
 	enum stmmac_fpe_state *lp_state = &fpe_cfg->lp_fpe_state;
 	bool *hs_enable = &fpe_cfg->hs_enable;
@@ -7427,17 +7427,17 @@ static void stmmac_fpe_lp_task(struct work_struct *work)
 
 void stmmac_fpe_handshake(struct stmmac_priv *priv, bool enable)
 {
-	if (priv->plat->fpe_cfg->hs_enable != enable) {
+	if (priv->fpe_cfg.hs_enable != enable) {
 		if (enable) {
 			stmmac_fpe_send_mpacket(priv, priv->ioaddr,
-						priv->plat->fpe_cfg,
+						&priv->fpe_cfg,
 						MPACKET_VERIFY);
 		} else {
-			priv->plat->fpe_cfg->lo_fpe_state = FPE_STATE_OFF;
-			priv->plat->fpe_cfg->lp_fpe_state = FPE_STATE_OFF;
+			priv->fpe_cfg.lo_fpe_state = FPE_STATE_OFF;
+			priv->fpe_cfg.lp_fpe_state = FPE_STATE_OFF;
 		}
 
-		priv->plat->fpe_cfg->hs_enable = enable;
+		priv->fpe_cfg.hs_enable = enable;
 	}
 }
 
@@ -7898,7 +7898,7 @@ int stmmac_suspend(struct device *dev)
 	if (priv->dma_cap.fpesel) {
 		/* Disable FPE */
 		stmmac_fpe_configure(priv, priv->ioaddr,
-				     priv->plat->fpe_cfg,
+				     &priv->fpe_cfg,
 				     priv->plat->tx_queues_to_use,
 				     priv->plat->rx_queues_to_use, false);
 
drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c +3 -13
index 996f2bcd07a2..9cc41ed01882 100644
@@ -282,16 +282,6 @@ static int tc_init(struct stmmac_priv *priv)
 	if (ret)
 		return -ENOMEM;
 
-	if (!priv->plat->fpe_cfg) {
-		priv->plat->fpe_cfg = devm_kzalloc(priv->device,
-						   sizeof(*priv->plat->fpe_cfg),
-						   GFP_KERNEL);
-		if (!priv->plat->fpe_cfg)
-			return -ENOMEM;
-	} else {
-		memset(priv->plat->fpe_cfg, 0, sizeof(*priv->plat->fpe_cfg));
-	}
-
 	/* Fail silently as we can still use remaining features, e.g. CBS */
 	if (!dma_cap->frpsel)
 		return 0;
@@ -1076,7 +1066,7 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 	/* Actual FPE register configuration will be done after FPE handshake
 	 * is success.
 	 */
-	priv->plat->fpe_cfg->enable = fpe;
+	priv->fpe_cfg.enable = fpe;
 
 	ret = stmmac_est_configure(priv, priv, priv->est,
 				   priv->plat->clk_ptp_rate);
@@ -1109,9 +1099,9 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 		mutex_unlock(&priv->est_lock);
 	}
 
-	priv->plat->fpe_cfg->enable = false;
+	priv->fpe_cfg.enable = false;
 	stmmac_fpe_configure(priv, priv->ioaddr,
-			     priv->plat->fpe_cfg,
+			     &priv->fpe_cfg,
 			     priv->plat->tx_queues_to_use,
 			     priv->plat->rx_queues_to_use,
 			     false);
include/linux/stmmac.h +0 -28
index 338991c08f00..d79ff252cfdc 100644
@@ -138,33 +138,6 @@ struct stmmac_txq_cfg {
 	int tbs_en;
 };
 
-/* FPE link state */
-enum stmmac_fpe_state {
-	FPE_STATE_OFF = 0,
-	FPE_STATE_CAPABLE = 1,
-	FPE_STATE_ENTERING_ON = 2,
-	FPE_STATE_ON = 3,
-};
-
-/* FPE link-partner hand-shaking mPacket type */
-enum stmmac_mpacket_type {
-	MPACKET_VERIFY = 0,
-	MPACKET_RESPONSE = 1,
-};
-
-enum stmmac_fpe_task_state_t {
-	__FPE_REMOVING,
-	__FPE_TASK_SCHED,
-};
-
-struct stmmac_fpe_cfg {
-	bool enable;				/* FPE enable */
-	bool hs_enable;				/* FPE handshake enable */
-	enum stmmac_fpe_state lp_fpe_state;	/* Link Partner FPE state */
-	enum stmmac_fpe_state lo_fpe_state;	/* Local station FPE state */
-	u32 fpe_csr;				/* MAC_FPE_CTRL_STS reg cache */
-};
-
 struct stmmac_safety_feature_cfg {
 	u32 tsoee;
 	u32 mrxpee;
@@ -232,7 +205,6 @@ struct plat_stmmacenet_data {
 	struct fwnode_handle *port_node;
 	struct device_node *mdio_node;
 	struct stmmac_dma_cfg *dma_cfg;
-	struct stmmac_fpe_cfg *fpe_cfg;
 	struct stmmac_safety_feature_cfg *safety_feat_cfg;
 	int clk_csr;
 	int has_gmac;
Signature · 1 line
2.34.1
author
#2 lore raw

PATCH v2 2/7 net: stmmac: drop stmmac_fpe_handshake

In reply to Furong Xu

ethtool --set-mm can trigger FPE verification processe by calling stmmac_fpe_send_mpacket, stmmac_fpe_handshake should be gone.

---
 .../net/ethernet/stmicro/stmmac/stmmac_main.c | 23 +------------------
 .../net/ethernet/stmicro/stmmac/stmmac_tc.c   |  8 -------
 2 files changed, 1 insertion(+), 30 deletions(-)
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +1 -22
index 529fe31f8b04..3072ad33b105 100644
@@ -3533,13 +3533,9 @@ static int stmmac_hw_setup(struct net_device *dev, bool ptp_register)
 
 	stmmac_set_hw_vlan_mode(priv, priv->hw);
 
-	if (priv->dma_cap.fpesel) {
+	if (priv->dma_cap.fpesel)
 		stmmac_fpe_start_wq(priv);
 
-		if (priv->fpe_cfg.enable)
-			stmmac_fpe_handshake(priv, true);
-	}
-
 	return 0;
 }
 
@@ -7425,22 +7421,6 @@ static void stmmac_fpe_lp_task(struct work_struct *work)
 	clear_bit(__FPE_TASK_SCHED, &priv->fpe_task_state);
 }
 
-void stmmac_fpe_handshake(struct stmmac_priv *priv, bool enable)
-{
-	if (priv->fpe_cfg.hs_enable != enable) {
-		if (enable) {
-			stmmac_fpe_send_mpacket(priv, priv->ioaddr,
-						&priv->fpe_cfg,
-						MPACKET_VERIFY);
-		} else {
-			priv->fpe_cfg.lo_fpe_state = FPE_STATE_OFF;
-			priv->fpe_cfg.lp_fpe_state = FPE_STATE_OFF;
-		}
-
-		priv->fpe_cfg.hs_enable = enable;
-	}
-}
-
 static int stmmac_xdp_rx_timestamp(const struct xdp_md *_ctx, u64 *timestamp)
 {
 	const struct stmmac_xdp_buff *ctx = (void *)_ctx;
@@ -7902,7 +7882,6 @@ int stmmac_suspend(struct device *dev)
 				     priv->plat->tx_queues_to_use,
 				     priv->plat->rx_queues_to_use, false);
 
-		stmmac_fpe_handshake(priv, false);
 		stmmac_fpe_stop_wq(priv);
 	}
 
drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c +0 -8
index 9cc41ed01882..b0cc45331ff7 100644
@@ -1078,11 +1078,6 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 
 	netdev_info(priv->dev, "configured EST\n");
 
-	if (fpe) {
-		stmmac_fpe_handshake(priv, true);
-		netdev_info(priv->dev, "start FPE handshake\n");
-	}
-
 	return 0;
 
 disable:
@@ -1107,9 +1102,6 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 			     false);
 	netdev_info(priv->dev, "disabled FPE\n");
 
-	stmmac_fpe_handshake(priv, false);
-	netdev_info(priv->dev, "stop FPE handshake\n");
-
 	return ret;
 }
 
Signature · 1 line
2.34.1
author
#3 lore raw

PATCH v2 3/7 net: stmmac: refactor FPE verification processe

In reply to Furong Xu

Drop driver defined stmmac_fpe_state, and switch to common ethtool_mm_verify_status for local TX verification status.

Local side and remote side verification processes are completely independent. There is no reason at all to keep a local state and a remote state.

Add a spinlock to avoid races between ISR and workqueue.

---
 drivers/net/ethernet/stmicro/stmmac/stmmac.h  |  17 +-
 .../net/ethernet/stmicro/stmmac/stmmac_main.c | 150 ++++++++++--------
 .../net/ethernet/stmicro/stmmac/stmmac_tc.c   |   6 -
 3 files changed, 87 insertions(+), 86 deletions(-)
drivers/net/ethernet/stmicro/stmmac/stmmac.h +5 -12
index 2c2181febb39..26ee1dbcccae 100644
@@ -146,14 +146,6 @@ struct stmmac_channel {
 	u32 index;
 };
 
-/* FPE link state */
-enum stmmac_fpe_state {
-	FPE_STATE_OFF = 0,
-	FPE_STATE_CAPABLE = 1,
-	FPE_STATE_ENTERING_ON = 2,
-	FPE_STATE_ON = 3,
-};
-
 /* FPE link-partner hand-shaking mPacket type */
 enum stmmac_mpacket_type {
 	MPACKET_VERIFY = 0,
@@ -166,10 +158,10 @@ enum stmmac_fpe_task_state_t {
 };
 
 struct stmmac_fpe_cfg {
-	bool enable;				/* FPE enable */
-	bool hs_enable;				/* FPE handshake enable */
-	enum stmmac_fpe_state lp_fpe_state;	/* Link Partner FPE state */
-	enum stmmac_fpe_state lo_fpe_state;	/* Local station FPE state */
+	bool pmac_enabled;			/* see ethtool_mm_state */
+	bool verify_enabled;			/* see ethtool_mm_state */
+	u32 verify_time;			/* see ethtool_mm_state */
+	enum ethtool_mm_verify_status status;
 	u32 fpe_csr;				/* MAC_FPE_CTRL_STS reg cache */
 };
 
@@ -366,6 +358,7 @@ struct stmmac_priv {
 	struct workqueue_struct *wq;
 	struct work_struct service_task;
 
+	spinlock_t mm_lock;
 	struct stmmac_fpe_cfg fpe_cfg;
 
 	/* Workqueue for handling FPE hand-shaking */
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +82 -68

221 lines not on this page · raw message

drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c +0 -6
index b0cc45331ff7..783829a6479c 100644
@@ -1063,11 +1063,6 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 		return -EOPNOTSUPP;
 	}
 
-	/* Actual FPE register configuration will be done after FPE handshake
-	 * is success.
-	 */
-	priv->fpe_cfg.enable = fpe;
-
 	ret = stmmac_est_configure(priv, priv, priv->est,
 				   priv->plat->clk_ptp_rate);
 	mutex_unlock(&priv->est_lock);
@@ -1094,7 +1089,6 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 		mutex_unlock(&priv->est_lock);
 	}
 
-	priv->fpe_cfg.enable = false;
 	stmmac_fpe_configure(priv, priv->ioaddr,
 			     &priv->fpe_cfg,
 			     priv->plat->tx_queues_to_use,
Signature · 1 line
2.34.1
author
#4 lore raw

PATCH v2 4/7 net: stmmac: configure FPE via ethtool-mm

In reply to Furong Xu

Implement ethtool --show-mm and --set-mm callbacks.

NIC up/down, link up/down, suspend/resume, kselftest-ethtool_mm, all tested okay.

---
 .../net/ethernet/stmicro/stmmac/dwmac4_core.c |   8 +-
 drivers/net/ethernet/stmicro/stmmac/dwmac5.c  |  36 +++++-
 drivers/net/ethernet/stmicro/stmmac/dwmac5.h  |   7 +-
 .../ethernet/stmicro/stmmac/dwxgmac2_core.c   |   4 +-
 drivers/net/ethernet/stmicro/stmmac/hwif.h    |   8 +-
 .../ethernet/stmicro/stmmac/stmmac_ethtool.c  | 103 ++++++++++++++++++
 .../net/ethernet/stmicro/stmmac/stmmac_main.c |  10 +-
 .../net/ethernet/stmicro/stmmac/stmmac_tc.c   |   2 +-
 8 files changed, 162 insertions(+), 16 deletions(-)
drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c +4 -4
index 31c387cc5f26..679efcc631f1 100644
@@ -58,10 +58,6 @@ static void dwmac4_core_init(struct mac_device_info *hw,
 	if (hw->pcs)
 		value |= GMAC_PCS_IRQ_DEFAULT;
 
-	/* Enable FPE interrupt */
-	if ((GMAC_HW_FEAT_FPESEL & readl(ioaddr + GMAC_HW_FEATURE3)) >> 26)
-		value |= GMAC_INT_FPE_EN;
-
 	writel(value, ioaddr + GMAC_INT_EN);
 
 	if (GMAC_INT_DEFAULT_ENABLE & GMAC_INT_TSIE)
@@ -1268,6 +1264,8 @@ const struct stmmac_ops dwmac410_ops = {
 	.fpe_configure = dwmac5_fpe_configure,
 	.fpe_send_mpacket = dwmac5_fpe_send_mpacket,
 	.fpe_irq_status = dwmac5_fpe_irq_status,
+	.fpe_get_add_frag_size = dwmac5_fpe_get_add_frag_size,
+	.fpe_set_add_frag_size = dwmac5_fpe_set_add_frag_size,
 	.add_hw_vlan_rx_fltr = dwmac4_add_hw_vlan_rx_fltr,
 	.del_hw_vlan_rx_fltr = dwmac4_del_hw_vlan_rx_fltr,
 	.restore_hw_vlan_rx_fltr = dwmac4_restore_hw_vlan_rx_fltr,
@@ -1320,6 +1318,8 @@ const struct stmmac_ops dwmac510_ops = {
 	.fpe_configure = dwmac5_fpe_configure,
 	.fpe_send_mpacket = dwmac5_fpe_send_mpacket,
 	.fpe_irq_status = dwmac5_fpe_irq_status,
+	.fpe_get_add_frag_size = dwmac5_fpe_get_add_frag_size,
+	.fpe_set_add_frag_size = dwmac5_fpe_set_add_frag_size,
 	.add_hw_vlan_rx_fltr = dwmac4_add_hw_vlan_rx_fltr,
 	.del_hw_vlan_rx_fltr = dwmac4_del_hw_vlan_rx_fltr,
 	.restore_hw_vlan_rx_fltr = dwmac4_restore_hw_vlan_rx_fltr,
drivers/net/ethernet/stmicro/stmmac/dwmac5.c +34 -2
index e02cebc3f1b7..4c91fa766b13 100644
@@ -575,11 +575,11 @@ int dwmac5_flex_pps_config(void __iomem *ioaddr, int index,
 
 void dwmac5_fpe_configure(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg,
 			  u32 num_txq, u32 num_rxq,
-			  bool enable)
+			  bool tx_enable, bool pmac_enable)
 {
 	u32 value;
 
-	if (enable) {
+	if (tx_enable) {
 		cfg->fpe_csr = EFPE;
 		value = readl(ioaddr + GMAC_RXQ_CTRL1);
 		value &= ~GMAC_RXQCTRL_FPRQ;
@@ -589,6 +589,21 @@ void dwmac5_fpe_configure(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg,
 		cfg->fpe_csr = 0;
 	}
 	writel(cfg->fpe_csr, ioaddr + MAC_FPE_CTRL_STS);
+
+	value = readl(ioaddr + GMAC_INT_EN);
+
+	if (pmac_enable) {
+		if (!(value & GMAC_INT_FPE_EN)) {
+			/* Dummy read to clear any pending masked interrupts */
+			(void)readl(ioaddr + MAC_FPE_CTRL_STS);
+
+			value |= GMAC_INT_FPE_EN;
+		}
+	} else {
+		value &= ~GMAC_INT_FPE_EN;
+	}
+
+	writel(value, ioaddr + GMAC_INT_EN);
 }
 
 int dwmac5_fpe_irq_status(void __iomem *ioaddr, struct net_device *dev)
@@ -638,3 +653,20 @@ void dwmac5_fpe_send_mpacket(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg,
 
 	writel(value, ioaddr + MAC_FPE_CTRL_STS);
 }
+
+int dwmac5_fpe_get_add_frag_size(void __iomem *ioaddr)
+{
+	return FIELD_GET(AFSZ, readl(ioaddr + MTL_FPE_CTRL_STS));
+}
+
+void dwmac5_fpe_set_add_frag_size(void __iomem *ioaddr, u32 add_frag_size)
+{
+	u32 value;
+
+	value = readl(ioaddr + MTL_FPE_CTRL_STS);
+
+	value &= ~AFSZ;
+	value |= FIELD_PREP(AFSZ, add_frag_size);
+
+	writel(value, ioaddr + MTL_FPE_CTRL_STS);
+}
drivers/net/ethernet/stmicro/stmmac/dwmac5.h +6 -1
index bf33a51d229e..e369e65920fc 100644
@@ -39,6 +39,9 @@
 #define MAC_PPSx_INTERVAL(x)		(0x00000b88 + ((x) * 0x10))
 #define MAC_PPSx_WIDTH(x)		(0x00000b8c + ((x) * 0x10))
 
+#define MTL_FPE_CTRL_STS		0x00000c90
+#define AFSZ				GENMASK(1, 0)
+
 #define MTL_RXP_CONTROL_STATUS		0x00000ca0
 #define RXPI				BIT(31)
 #define NPE				GENMASK(23, 16)
@@ -104,10 +107,12 @@ int dwmac5_flex_pps_config(void __iomem *ioaddr, int index,
 			   u32 sub_second_inc, u32 systime_flags);
 void dwmac5_fpe_configure(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg,
 			  u32 num_txq, u32 num_rxq,
-			  bool enable);
+			  bool tx_enable, bool pmac_enable);
 void dwmac5_fpe_send_mpacket(void __iomem *ioaddr,
 			     struct stmmac_fpe_cfg *cfg,
 			     enum stmmac_mpacket_type type);
 int dwmac5_fpe_irq_status(void __iomem *ioaddr, struct net_device *dev);
+int dwmac5_fpe_get_add_frag_size(void __iomem *ioaddr);
+void dwmac5_fpe_set_add_frag_size(void __iomem *ioaddr, u32 add_frag_size);
 
 #endif /* __DWMAC5_H__ */
drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c +2 -2
index cbf2dd976ab1..55a175ced77f 100644
@@ -1506,11 +1506,11 @@ static void dwxgmac2_set_arp_offload(struct mac_device_info *hw, bool en,
 
 static void dwxgmac3_fpe_configure(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg,
 				   u32 num_txq,
-				   u32 num_rxq, bool enable)
+				   u32 num_rxq, bool tx_enable, bool pmac_enable)
 {
 	u32 value;
 
-	if (!enable) {
+	if (!tx_enable) {
 		value = readl(ioaddr + XGMAC_FPE_CTRL_STS);
 
 		value &= ~XGMAC_EFPE;
drivers/net/ethernet/stmicro/stmmac/hwif.h +7 -1
index 28dfc0054a3a..31767427386b 100644
@@ -421,11 +421,13 @@ struct stmmac_ops {
 	void (*set_arp_offload)(struct mac_device_info *hw, bool en, u32 addr);
 	void (*fpe_configure)(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg,
 			      u32 num_txq, u32 num_rxq,
-			      bool enable);
+			      bool tx_enable, bool pmac_enable);
 	void (*fpe_send_mpacket)(void __iomem *ioaddr,
 				 struct stmmac_fpe_cfg *cfg,
 				 enum stmmac_mpacket_type type);
 	int (*fpe_irq_status)(void __iomem *ioaddr, struct net_device *dev);
+	int (*fpe_get_add_frag_size)(void __iomem *ioaddr);
+	void (*fpe_set_add_frag_size)(void __iomem *ioaddr, u32 add_frag_size);
 };
 
 #define stmmac_core_init(__priv, __args...) \
@@ -530,6 +532,10 @@ struct stmmac_ops {
 	stmmac_do_void_callback(__priv, mac, fpe_send_mpacket, __args)
 #define stmmac_fpe_irq_status(__priv, __args...) \
 	stmmac_do_callback(__priv, mac, fpe_irq_status, __args)
+#define stmmac_fpe_get_add_frag_size(__priv, __args...) \
+	stmmac_do_callback(__priv, mac, fpe_get_add_frag_size, __args)
+#define stmmac_fpe_set_add_frag_size(__priv, __args...) \
+	stmmac_do_void_callback(__priv, mac, fpe_set_add_frag_size, __args)
 
 /* PTP and HW Timer helpers */
 struct stmmac_hwtimestamp {
drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c +103 -0

121 lines not on this page · raw message

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +5 -5
index a21268492475..cc91811eedf0 100644
@@ -3542,7 +3542,7 @@ static int stmmac_hw_setup(struct net_device *dev, bool ptp_register)
 				     &priv->fpe_cfg,
 				     priv->plat->tx_queues_to_use,
 				     priv->plat->rx_queues_to_use,
-				     false);
+				     false, priv->fpe_cfg.pmac_enabled);
 	}
 
 	return 0;
@@ -4109,7 +4109,7 @@ static int stmmac_release(struct net_device *dev)
 			     &priv->fpe_cfg,
 			     priv->plat->tx_queues_to_use,
 			     priv->plat->rx_queues_to_use,
-			     false);
+			     false, false);
 
 	priv->fpe_cfg.pmac_enabled = false;
 	priv->fpe_cfg.verify_enabled = false;
@@ -7413,7 +7413,7 @@ static void stmmac_fpe_verify_task(struct work_struct *work)
 		stmmac_fpe_configure(priv, priv->ioaddr, fpe_cfg,
 				     priv->plat->tx_queues_to_use,
 				     priv->plat->rx_queues_to_use,
-				     true);
+				     true, fpe_cfg->pmac_enabled);
 
 		spin_unlock_irqrestore(&priv->mm_lock, flags);
 	}
@@ -7426,7 +7426,7 @@ static void stmmac_fpe_verify_task(struct work_struct *work)
 		stmmac_fpe_configure(priv, priv->ioaddr, fpe_cfg,
 				     priv->plat->tx_queues_to_use,
 				     priv->plat->rx_queues_to_use,
-				     false);
+				     false, fpe_cfg->pmac_enabled);
 
 		spin_unlock_irqrestore(&priv->mm_lock, flags);
 	}
@@ -7894,7 +7894,7 @@ int stmmac_suspend(struct device *dev)
 		stmmac_fpe_configure(priv, priv->ioaddr,
 				     &priv->fpe_cfg,
 				     priv->plat->tx_queues_to_use,
-				     priv->plat->rx_queues_to_use, false);
+				     priv->plat->rx_queues_to_use, false, false);
 
 		stmmac_fpe_stop_wq(priv);
 	}
drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c +1 -1
index 783829a6479c..a58282d6458c 100644
@@ -1093,7 +1093,7 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 			     &priv->fpe_cfg,
 			     priv->plat->tx_queues_to_use,
 			     priv->plat->rx_queues_to_use,
-			     false);
+			     false, false);
 	netdev_info(priv->dev, "disabled FPE\n");
 
 	return ret;
Signature · 1 line
2.34.1
author
#5 lore raw

PATCH v2 5/7 net: stmmac: support fp parameter of tc-mqprio

In reply to Furong Xu

tc-mqprio can select whether traffic classes are express or preemptible.

After some traffic tests, MAC merge layer statistics are all good.

Local device:
ethtool --include-statistics --json --show-mm eth1

[ {
        "ifname": "eth1",
        "pmac-enabled": true,
        "tx-enabled": true,
        "tx-active": true,
        "tx-min-frag-size": 60,
        "rx-min-frag-size": 60,
        "verify-enabled": true,
        "verify-time": 100,
        "max-verify-time": 128,
        "verify-status": "SUCCEEDED",
        "statistics": {
            "MACMergeFrameAssErrorCount": 0,
            "MACMergeFrameSmdErrorCount": 0,
            "MACMergeFrameAssOkCount": 0,
            "MACMergeFragCountRx": 0,
            "MACMergeFragCountTx": 35105,
            "MACMergeHoldCount": 0
        }
    } ]

Remote device:
ethtool --include-statistics --json --show-mm end1

[ {
        "ifname": "end1",
        "pmac-enabled": true,
        "tx-enabled": true,
        "tx-active": true,
        "tx-min-frag-size": 60,
        "rx-min-frag-size": 60,
        "verify-enabled": true,
        "verify-time": 100,
        "max-verify-time": 128,
        "verify-status": "SUCCEEDED",
        "statistics": {
            "MACMergeFrameAssErrorCount": 0,
            "MACMergeFrameSmdErrorCount": 0,
            "MACMergeFrameAssOkCount": 35105,
            "MACMergeFragCountRx": 35105,
            "MACMergeFragCountTx": 0,
            "MACMergeHoldCount": 0
        }
    } ]

Tested on DWMAC CORE 5.10a

---
 .../net/ethernet/stmicro/stmmac/dwmac4_core.c |  2 +
 drivers/net/ethernet/stmicro/stmmac/dwmac5.c  | 52 +++++++++++++
 drivers/net/ethernet/stmicro/stmmac/dwmac5.h  |  4 +
 drivers/net/ethernet/stmicro/stmmac/hwif.h    | 10 +++
 .../net/ethernet/stmicro/stmmac/stmmac_main.c |  2 +
 .../net/ethernet/stmicro/stmmac/stmmac_tc.c   | 74 +++++++++++++++++++
 6 files changed, 144 insertions(+)
drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c +2 -0
index 679efcc631f1..4722bac7e3d4 100644
@@ -1266,6 +1266,7 @@ const struct stmmac_ops dwmac410_ops = {
 	.fpe_irq_status = dwmac5_fpe_irq_status,
 	.fpe_get_add_frag_size = dwmac5_fpe_get_add_frag_size,
 	.fpe_set_add_frag_size = dwmac5_fpe_set_add_frag_size,
+	.fpe_set_preemptible_tcs = dwmac5_fpe_set_preemptible_tcs,
 	.add_hw_vlan_rx_fltr = dwmac4_add_hw_vlan_rx_fltr,
 	.del_hw_vlan_rx_fltr = dwmac4_del_hw_vlan_rx_fltr,
 	.restore_hw_vlan_rx_fltr = dwmac4_restore_hw_vlan_rx_fltr,
@@ -1320,6 +1321,7 @@ const struct stmmac_ops dwmac510_ops = {
 	.fpe_irq_status = dwmac5_fpe_irq_status,
 	.fpe_get_add_frag_size = dwmac5_fpe_get_add_frag_size,
 	.fpe_set_add_frag_size = dwmac5_fpe_set_add_frag_size,
+	.fpe_set_preemptible_tcs = dwmac5_fpe_set_preemptible_tcs,
 	.add_hw_vlan_rx_fltr = dwmac4_add_hw_vlan_rx_fltr,
 	.del_hw_vlan_rx_fltr = dwmac4_del_hw_vlan_rx_fltr,
 	.restore_hw_vlan_rx_fltr = dwmac4_restore_hw_vlan_rx_fltr,
drivers/net/ethernet/stmicro/stmmac/dwmac5.c +52 -0

55 lines not on this page · raw message

drivers/net/ethernet/stmicro/stmmac/dwmac5.h +4 -0
index e369e65920fc..d3191c48354d 100644
@@ -40,6 +40,7 @@
 #define MAC_PPSx_WIDTH(x)		(0x00000b8c + ((x) * 0x10))
 
 #define MTL_FPE_CTRL_STS		0x00000c90
+#define PEC				GENMASK(15, 8)
 #define AFSZ				GENMASK(1, 0)
 
 #define MTL_RXP_CONTROL_STATUS		0x00000ca0
@@ -114,5 +115,8 @@ void dwmac5_fpe_send_mpacket(void __iomem *ioaddr,
 int dwmac5_fpe_irq_status(void __iomem *ioaddr, struct net_device *dev);
 int dwmac5_fpe_get_add_frag_size(void __iomem *ioaddr);
 void dwmac5_fpe_set_add_frag_size(void __iomem *ioaddr, u32 add_frag_size);
+int dwmac5_fpe_set_preemptible_tcs(struct net_device *ndev,
+				   struct netlink_ext_ack *extack,
+				   unsigned long tcs);
 
 #endif /* __DWMAC5_H__ */
drivers/net/ethernet/stmicro/stmmac/hwif.h +10 -0
index 31767427386b..a02b0f7ed96b 100644
@@ -7,6 +7,7 @@
 
 #include <linux/netdevice.h>
 #include <linux/stmmac.h>
+#include <net/pkt_cls.h>
 
 #define stmmac_do_void_callback(__priv, __module, __cname,  __arg0, __args...) \
 ({ \
@@ -428,6 +429,9 @@ struct stmmac_ops {
 	int (*fpe_irq_status)(void __iomem *ioaddr, struct net_device *dev);
 	int (*fpe_get_add_frag_size)(void __iomem *ioaddr);
 	void (*fpe_set_add_frag_size)(void __iomem *ioaddr, u32 add_frag_size);
+	int (*fpe_set_preemptible_tcs)(struct net_device *ndev,
+				       struct netlink_ext_ack *extack,
+				       unsigned long tcs);
 };
 
 #define stmmac_core_init(__priv, __args...) \
@@ -536,6 +540,8 @@ struct stmmac_ops {
 	stmmac_do_callback(__priv, mac, fpe_get_add_frag_size, __args)
 #define stmmac_fpe_set_add_frag_size(__priv, __args...) \
 	stmmac_do_void_callback(__priv, mac, fpe_set_add_frag_size, __args)
+#define stmmac_fpe_set_preemptible_tcs(__priv, __args...) \
+	stmmac_do_callback(__priv, mac, fpe_set_preemptible_tcs, __args)
 
 /* PTP and HW Timer helpers */
 struct stmmac_hwtimestamp {
@@ -623,6 +629,8 @@ struct stmmac_tc_ops {
 			 struct tc_etf_qopt_offload *qopt);
 	int (*query_caps)(struct stmmac_priv *priv,
 			  struct tc_query_caps_base *base);
+	int (*setup_mqprio)(struct stmmac_priv *priv,
+			    struct tc_mqprio_qopt_offload *qopt);
 };
 
 #define stmmac_tc_init(__priv, __args...) \
@@ -639,6 +647,8 @@ struct stmmac_tc_ops {
 	stmmac_do_callback(__priv, tc, setup_etf, __args)
 #define stmmac_tc_query_caps(__priv, __args...) \
 	stmmac_do_callback(__priv, tc, query_caps, __args)
+#define stmmac_tc_setup_mqprio(__priv, __args...) \
+	stmmac_do_callback(__priv, tc, setup_mqprio, __args)
 
 struct stmmac_counters;
 
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +2 -0
index cc91811eedf0..15c07ee944b4 100644
@@ -6265,6 +6265,8 @@ static int stmmac_setup_tc(struct net_device *ndev, enum tc_setup_type type,
 	switch (type) {
 	case TC_QUERY_CAPS:
 		return stmmac_tc_query_caps(priv, priv, type_data);
+	case TC_SETUP_QDISC_MQPRIO:
+		return stmmac_tc_setup_mqprio(priv, priv, type_data);
 	case TC_SETUP_BLOCK:
 		return flow_block_cb_setup_simple(type_data,
 						  &stmmac_block_cb_list,
drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c +74 -0

90 lines not on this page · raw message

Signature · 1 line
2.34.1
author
#6 lore raw

PATCH v2 6/7 net: stmmac: support fp parameter of tc-taprio

In reply to Furong Xu

tc-taprio can select whether traffic classes are express or preemptible.

0) tc qdisc add dev eth1 parent root handle 100 taprio \

        num_tc 4 \
        map 0 1 2 3 2 2 2 2 2 2 2 2 2 2 2 3 \
        queues 1@0 1@1 1@2 1@3 \
        base-time 1000000000 \
        sched-entry S 03 10000000 \
        sched-entry S 0e 10000000 \
        flags 0x2 fp P E E E

1) After some traffic tests, MAC merge layer statistics are all good.

Local device:

[ {
        "ifname": "eth1",
        "pmac-enabled": true,
        "tx-enabled": true,
        "tx-active": true,
        "tx-min-frag-size": 60,
        "rx-min-frag-size": 60,
        "verify-enabled": true,
        "verify-time": 100,
        "max-verify-time": 128,
        "verify-status": "SUCCEEDED",
        "statistics": {
            "MACMergeFrameAssErrorCount": 0,
            "MACMergeFrameSmdErrorCount": 0,
            "MACMergeFrameAssOkCount": 0,
            "MACMergeFragCountRx": 0,
            "MACMergeFragCountTx": 17837,
            "MACMergeHoldCount": 18639
        }
    } ]

Remote device:

[ {
        "ifname": "end1",
        "pmac-enabled": true,
        "tx-enabled": true,
        "tx-active": true,
        "tx-min-frag-size": 60,
        "rx-min-frag-size": 60,
        "verify-enabled": true,
        "verify-time": 100,
        "max-verify-time": 128,
        "verify-status": "SUCCEEDED",
        "statistics": {
            "MACMergeFrameAssErrorCount": 0,
            "MACMergeFrameSmdErrorCount": 0,
            "MACMergeFrameAssOkCount": 17189,
            "MACMergeFragCountRx": 17837,
            "MACMergeFragCountTx": 0,
            "MACMergeHoldCount": 0
        }
    } ]

Tested on DWMAC CORE 5.10a

---
 drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)
drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c +6 -11
index a967c6f01e4e..05b870b35947 100644
@@ -933,7 +933,6 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 	u32 size, wid = priv->dma_cap.estwid, dep = priv->dma_cap.estdep;
 	struct timespec64 time, current_time, qopt_time;
 	ktime_t current_time_ns;
-	bool fpe = false;
 	int i, ret = 0;
 	u64 ctr;
 
@@ -1018,16 +1017,12 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 
 		switch (qopt->entries[i].command) {
 		case TC_TAPRIO_CMD_SET_GATES:
-			if (fpe)
-				return -EINVAL;
 			break;
 		case TC_TAPRIO_CMD_SET_AND_HOLD:
 			gates |= BIT(0);
-			fpe = true;
 			break;
 		case TC_TAPRIO_CMD_SET_AND_RELEASE:
 			gates &= ~BIT(0);
-			fpe = true;
 			break;
 		default:
 			return -EOPNOTSUPP;
@@ -1058,7 +1053,7 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 
 	tc_taprio_map_maxsdu_txq(priv, qopt);
 
-	if (fpe && !priv->dma_cap.fpesel) {
+	if (qopt->mqprio.preemptible_tcs && !priv->dma_cap.fpesel) {
 		mutex_unlock(&priv->est_lock);
 		return -EOPNOTSUPP;
 	}
@@ -1071,6 +1066,9 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 		goto disable;
 	}
 
+	stmmac_fpe_set_preemptible_tcs(priv, priv->dev, qopt->mqprio.extack,
+				       qopt->mqprio.preemptible_tcs);
+
 	netdev_info(priv->dev, "configured EST\n");
 
 	return 0;
@@ -1089,11 +1087,8 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 		mutex_unlock(&priv->est_lock);
 	}
 
-	stmmac_fpe_configure(priv, priv->ioaddr,
-			     &priv->fpe_cfg,
-			     priv->plat->tx_queues_to_use,
-			     priv->plat->rx_queues_to_use,
-			     false, false);
+	stmmac_fpe_set_preemptible_tcs(priv, priv->dev, qopt->mqprio.extack, 0);
+
 	netdev_info(priv->dev, "disabled FPE\n");
 
 	return ret;
Signature · 1 line
2.34.1
author
#7 lore raw

PATCH v2 7/7 net: stmmac: silence FPE kernel logs

In reply to Furong Xu

ethtool --show-mm can get real-time state of FPE.
Those kernel logs should keep quiet.

---
 drivers/net/ethernet/stmicro/stmmac/dwmac5.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
drivers/net/ethernet/stmicro/stmmac/dwmac5.c +4 -4
index b6114de34b31..733163c52f97 100644
@@ -620,22 +620,22 @@ int dwmac5_fpe_irq_status(void __iomem *ioaddr, struct net_device *dev)
 
 	if (value & TRSP) {
 		status |= FPE_EVENT_TRSP;
-		netdev_info(dev, "FPE: Respond mPacket is transmitted\n");
+		netdev_dbg(dev, "FPE: Respond mPacket is transmitted\n");
 	}
 
 	if (value & TVER) {
 		status |= FPE_EVENT_TVER;
-		netdev_info(dev, "FPE: Verify mPacket is transmitted\n");
+		netdev_dbg(dev, "FPE: Verify mPacket is transmitted\n");
 	}
 
 	if (value & RRSP) {
 		status |= FPE_EVENT_RRSP;
-		netdev_info(dev, "FPE: Respond mPacket is received\n");
+		netdev_dbg(dev, "FPE: Respond mPacket is received\n");
 	}
 
 	if (value & RVER) {
 		status |= FPE_EVENT_RVER;
-		netdev_info(dev, "FPE: Verify mPacket is received\n");
+		netdev_dbg(dev, "FPE: Verify mPacket is received\n");
 	}
 
 	return status;
Signature · 1 line
2.34.1
#8 lore raw
In reply to Furong Xu
Quoted 7 lines · Furong Xu

Move the Frame Preemption(FPE) over to the new standard API which uses ethtool-mm/tc-mqprio/tc-taprio.

Changes in v2:
1. refactor FPE verification processe
2. suspend/resume and kselftest-ethtool_mm, all test cases passed
3. handle TC:TXQ remapping for DWMAC CORE4+

This is starting to look better and better. I wouldn't be sad if it was merged like this, but the locking still looks a little bit wacky to me, and it's not 100% clear what priv->mm_lock protects and what it doesn't.

I can make a breakdown of how each member of fpe_cfg is used, and thus understand exactly what are the locking needs and how they are addressed in this version, but most likely not today.