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.

Suggested-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Furong Xu <0x1207@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Link: https://patch.msgid.link/d9b3d7ecb308c5e39778a4c8ae9df288a2754379.1725631883.git.0x1207@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/stmicro/stmmac/hwif.h

@@ -28,6 +28,8 @@
 struct stmmac_extra_stats;
 struct stmmac_priv;
 struct stmmac_safety_stats;
+struct stmmac_fpe_cfg;
+enum stmmac_mpacket_type;
 struct dma_desc;
 struct dma_extended_desc;
 struct dma_edesc;

drivers/net/ethernet/stmicro/stmmac/stmmac.h

@@ -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;
@@ -339,11 +366,12 @@ struct stmmac_priv {
 	struct workqueue_struct *wq;
 	struct work_struct service_task;
 
-	/* Workqueue for handling FPE hand-shaking */
+	/* Frame Preemption feature (FPE) */
 	unsigned long fpe_task_state;
 	struct workqueue_struct *fpe_wq;
 	struct work_struct fpe_task;
 	char wq_name[IFNAMSIZ + 4];
+	struct stmmac_fpe_cfg fpe_cfg;
 
 	/* TC Handling */
 	unsigned int tc_entries_max;

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

@@ -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

@@ -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

@@ -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;