net: stmmac: Add XGMAC 2.10 HWIF entry

Add a new entry to HWIF table for XGMAC 2.10. For now we fill it with
empty callbacks which will be added in posterior patches.
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -42,6 +42,8 @@
 #define DWMAC_CORE_4_10		0x41
 #define DWMAC_CORE_5_00		0x50
 #define DWMAC_CORE_5_10		0x51
+#define DWXGMAC_CORE_2_10	0x21
+
 #define STMMAC_CHAN0	0	/* Always supported and default for all chips */
 
 /* These need to be power of two, and >= 4 */

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

@@ -72,6 +72,7 @@ static int stmmac_dwmac4_quirks(struct stmmac_priv *priv)
 static const struct stmmac_hwif_entry {
 	bool gmac;
 	bool gmac4;
+	bool xgmac;
 	u32 min_id;
 	const struct stmmac_regs_off regs;
 	const void *desc;
@@ -87,6 +88,7 @@ static const struct stmmac_hwif_entry {
 	{
 		.gmac = false,
 		.gmac4 = false,
+		.xgmac = false,
 		.min_id = 0,
 		.regs = {
 			.ptp_off = PTP_GMAC3_X_OFFSET,
@@ -103,6 +105,7 @@ static const struct stmmac_hwif_entry {
 	}, {
 		.gmac = true,
 		.gmac4 = false,
+		.xgmac = false,
 		.min_id = 0,
 		.regs = {
 			.ptp_off = PTP_GMAC3_X_OFFSET,
@@ -119,6 +122,7 @@ static const struct stmmac_hwif_entry {
 	}, {
 		.gmac = false,
 		.gmac4 = true,
+		.xgmac = false,
 		.min_id = 0,
 		.regs = {
 			.ptp_off = PTP_GMAC4_OFFSET,
@@ -135,6 +139,7 @@ static const struct stmmac_hwif_entry {
 	}, {
 		.gmac = false,
 		.gmac4 = true,
+		.xgmac = false,
 		.min_id = DWMAC_CORE_4_00,
 		.regs = {
 			.ptp_off = PTP_GMAC4_OFFSET,
@@ -151,6 +156,7 @@ static const struct stmmac_hwif_entry {
 	}, {
 		.gmac = false,
 		.gmac4 = true,
+		.xgmac = false,
 		.min_id = DWMAC_CORE_4_10,
 		.regs = {
 			.ptp_off = PTP_GMAC4_OFFSET,
@@ -167,6 +173,7 @@ static const struct stmmac_hwif_entry {
 	}, {
 		.gmac = false,
 		.gmac4 = true,
+		.xgmac = false,
 		.min_id = DWMAC_CORE_5_10,
 		.regs = {
 			.ptp_off = PTP_GMAC4_OFFSET,
@@ -180,11 +187,29 @@ static const struct stmmac_hwif_entry {
 		.tc = &dwmac510_tc_ops,
 		.setup = dwmac4_setup,
 		.quirks = NULL,
-	}
+	}, {
+		.gmac = false,
+		.gmac4 = false,
+		.xgmac = true,
+		.min_id = DWXGMAC_CORE_2_10,
+		.regs = {
+			.ptp_off = 0,
+			.mmc_off = 0,
+		},
+		.desc = NULL,
+		.dma = NULL,
+		.mac = NULL,
+		.hwtimestamp = NULL,
+		.mode = NULL,
+		.tc = NULL,
+		.setup = NULL,
+		.quirks = NULL,
+	},
 };
 
 int stmmac_hwif_init(struct stmmac_priv *priv)
 {
+	bool needs_xgmac = priv->plat->has_xgmac;
 	bool needs_gmac4 = priv->plat->has_gmac4;
 	bool needs_gmac = priv->plat->has_gmac;
 	const struct stmmac_hwif_entry *entry;
@@ -195,7 +220,7 @@ int stmmac_hwif_init(struct stmmac_priv *priv)
 
 	if (needs_gmac) {
 		id = stmmac_get_id(priv, GMAC_VERSION);
-	} else if (needs_gmac4) {
+	} else if (needs_gmac4 || needs_xgmac) {
 		id = stmmac_get_id(priv, GMAC4_VERSION);
 	} else {
 		id = 0;
@@ -229,6 +254,8 @@ int stmmac_hwif_init(struct stmmac_priv *priv)
 			continue;
 		if (needs_gmac4 ^ entry->gmac4)
 			continue;
+		if (needs_xgmac ^ entry->xgmac)
+			continue;
 		/* Use synopsys_id var because some setups can override this */
 		if (priv->synopsys_id < entry->min_id)
 			continue;

include/linux/stmmac.h

@@ -190,5 +190,6 @@ struct plat_stmmacenet_data {
 	bool tso_en;
 	int mac_port_sel_speed;
 	bool en_tx_lpi_clockgating;
+	int has_xgmac;
 };
 #endif