r8169: add support for RTL8125BP rev.b

Add support for RTL8125BP rev.b. Its XID is 0x689. This chip supports
DASH and its dash type is "RTL_DASH_25_BP".

Signed-off-by: ChunHao Lin <hau@realtek.com>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/20250107064355.104711-1-hau@realtek.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Author: RealtekNIC

drivers/net/ethernet/realtek/r8169.h

@@ -70,6 +70,7 @@ enum mac_version {
 	RTL_GIGA_MAC_VER_63,
 	RTL_GIGA_MAC_VER_64,
 	RTL_GIGA_MAC_VER_65,
+	RTL_GIGA_MAC_VER_66,
 	RTL_GIGA_MAC_VER_70,
 	RTL_GIGA_MAC_VER_71,
 	RTL_GIGA_MAC_NONE

drivers/net/ethernet/realtek/r8169_main.c

@@ -58,6 +58,7 @@
 #define FIRMWARE_8125B_2	"rtl_nic/rtl8125b-2.fw"
 #define FIRMWARE_8125D_1	"rtl_nic/rtl8125d-1.fw"
 #define FIRMWARE_8125D_2	"rtl_nic/rtl8125d-2.fw"
+#define FIRMWARE_8125BP_2	"rtl_nic/rtl8125bp-2.fw"
 #define FIRMWARE_8126A_2	"rtl_nic/rtl8126a-2.fw"
 #define FIRMWARE_8126A_3	"rtl_nic/rtl8126a-3.fw"
 
@@ -142,6 +143,7 @@ static const struct {
 	[RTL_GIGA_MAC_VER_63] = {"RTL8125B",		FIRMWARE_8125B_2},
 	[RTL_GIGA_MAC_VER_64] = {"RTL8125D",		FIRMWARE_8125D_1},
 	[RTL_GIGA_MAC_VER_65] = {"RTL8125D",		FIRMWARE_8125D_2},
+	[RTL_GIGA_MAC_VER_66] = {"RTL8125BP",		FIRMWARE_8125BP_2},
 	[RTL_GIGA_MAC_VER_70] = {"RTL8126A",		FIRMWARE_8126A_2},
 	[RTL_GIGA_MAC_VER_71] = {"RTL8126A",		FIRMWARE_8126A_3},
 };
@@ -632,6 +634,7 @@ enum rtl_dash_type {
 	RTL_DASH_NONE,
 	RTL_DASH_DP,
 	RTL_DASH_EP,
+	RTL_DASH_25_BP,
 };
 
 struct rtl8169_private {
@@ -709,6 +712,7 @@ MODULE_FIRMWARE(FIRMWARE_8125A_3);
 MODULE_FIRMWARE(FIRMWARE_8125B_2);
 MODULE_FIRMWARE(FIRMWARE_8125D_1);
 MODULE_FIRMWARE(FIRMWARE_8125D_2);
+MODULE_FIRMWARE(FIRMWARE_8125BP_2);
 MODULE_FIRMWARE(FIRMWARE_8126A_2);
 MODULE_FIRMWARE(FIRMWARE_8126A_3);
 
@@ -1361,10 +1365,19 @@ static void rtl8168ep_driver_start(struct rtl8169_private *tp)
 		rtl_loop_wait_high(tp, &rtl_ep_ocp_read_cond, 10000, 30);
 }
 
+static void rtl8125bp_driver_start(struct rtl8169_private *tp)
+{
+	r8168ep_ocp_write(tp, 0x01, 0x14, OOB_CMD_DRIVER_START);
+	r8168ep_ocp_write(tp, 0x01, 0x18, 0x00);
+	r8168ep_ocp_write(tp, 0x01, 0x10, 0x01);
+}
+
 static void rtl8168_driver_start(struct rtl8169_private *tp)
 {
 	if (tp->dash_type == RTL_DASH_DP)
 		rtl8168dp_driver_start(tp);
+	else if (tp->dash_type == RTL_DASH_25_BP)
+		rtl8125bp_driver_start(tp);
 	else
 		rtl8168ep_driver_start(tp);
 }
@@ -1385,10 +1398,19 @@ static void rtl8168ep_driver_stop(struct rtl8169_private *tp)
 		rtl_loop_wait_low(tp, &rtl_ep_ocp_read_cond, 10000, 10);
 }
 
+static void rtl8125bp_driver_stop(struct rtl8169_private *tp)
+{
+	r8168ep_ocp_write(tp, 0x01, 0x14, OOB_CMD_DRIVER_STOP);
+	r8168ep_ocp_write(tp, 0x01, 0x18, 0x00);
+	r8168ep_ocp_write(tp, 0x01, 0x10, 0x01);
+}
+
 static void rtl8168_driver_stop(struct rtl8169_private *tp)
 {
 	if (tp->dash_type == RTL_DASH_DP)
 		rtl8168dp_driver_stop(tp);
+	else if (tp->dash_type == RTL_DASH_25_BP)
+		rtl8125bp_driver_stop(tp);
 	else
 		rtl8168ep_driver_stop(tp);
 }
@@ -1411,6 +1433,7 @@ static bool rtl_dash_is_enabled(struct rtl8169_private *tp)
 	case RTL_DASH_DP:
 		return r8168dp_check_dash(tp);
 	case RTL_DASH_EP:
+	case RTL_DASH_25_BP:
 		return r8168ep_check_dash(tp);
 	default:
 		return false;
@@ -1425,6 +1448,8 @@ static enum rtl_dash_type rtl_get_dash_type(struct rtl8169_private *tp)
 		return RTL_DASH_DP;
 	case RTL_GIGA_MAC_VER_51 ... RTL_GIGA_MAC_VER_53:
 		return RTL_DASH_EP;
+	case RTL_GIGA_MAC_VER_66:
+		return RTL_DASH_25_BP;
 	default:
 		return RTL_DASH_NONE;
 	}
@@ -2261,6 +2286,9 @@ static enum mac_version rtl8169_get_mac_version(u16 xid, bool gmii)
 		{ 0x7cf, 0x64a,	RTL_GIGA_MAC_VER_71 },
 		{ 0x7cf, 0x649,	RTL_GIGA_MAC_VER_70 },
 
+		/* 8125BP family. */
+		{ 0x7cf, 0x681,	RTL_GIGA_MAC_VER_66 },
+
 		/* 8125D family. */
 		{ 0x7cf, 0x689,	RTL_GIGA_MAC_VER_65 },
 		{ 0x7cf, 0x688,	RTL_GIGA_MAC_VER_64 },
@@ -3842,6 +3870,7 @@ static void rtl_hw_config(struct rtl8169_private *tp)
 		[RTL_GIGA_MAC_VER_63] = rtl_hw_start_8125b,
 		[RTL_GIGA_MAC_VER_64] = rtl_hw_start_8125d,
 		[RTL_GIGA_MAC_VER_65] = rtl_hw_start_8125d,
+		[RTL_GIGA_MAC_VER_66] = rtl_hw_start_8125d,
 		[RTL_GIGA_MAC_VER_70] = rtl_hw_start_8126a,
 		[RTL_GIGA_MAC_VER_71] = rtl_hw_start_8126a,
 	};
@@ -3861,6 +3890,7 @@ static void rtl_hw_start_8125(struct rtl8169_private *tp)
 	case RTL_GIGA_MAC_VER_61:
 	case RTL_GIGA_MAC_VER_64:
 	case RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_66:
 		for (i = 0xa00; i < 0xb00; i += 4)
 			RTL_W32(tp, i, 0);
 		break;

drivers/net/ethernet/realtek/r8169_phy_config.c

@@ -1102,6 +1102,28 @@ static void rtl8125d_hw_phy_config(struct rtl8169_private *tp,
 	rtl8125_config_eee_phy(phydev);
 }
 
+static void rtl8125bp_hw_phy_config(struct rtl8169_private *tp,
+				    struct phy_device *phydev)
+{
+	r8169_apply_firmware(tp);
+	rtl8168g_enable_gphy_10m(phydev);
+
+	r8168g_phy_param(phydev, 0x8010, 0x0800, 0x0000);
+
+	phy_write(phydev, 0x1f, 0x0b87);
+	phy_write(phydev, 0x16, 0x8088);
+	phy_modify(phydev, 0x17, 0xff00, 0x9000);
+	phy_write(phydev, 0x16, 0x808f);
+	phy_modify(phydev, 0x17, 0xff00, 0x9000);
+	phy_write(phydev, 0x1f, 0x0000);
+
+	r8168g_phy_param(phydev, 0x8174, 0x2000, 0x1800);
+
+	rtl8125_legacy_force_mode(phydev);
+	rtl8168g_disable_aldps(phydev);
+	rtl8125_config_eee_phy(phydev);
+}
+
 static void rtl8126a_hw_phy_config(struct rtl8169_private *tp,
 				   struct phy_device *phydev)
 {
@@ -1163,6 +1185,7 @@ void r8169_hw_phy_config(struct rtl8169_private *tp, struct phy_device *phydev,
 		[RTL_GIGA_MAC_VER_63] = rtl8125b_hw_phy_config,
 		[RTL_GIGA_MAC_VER_64] = rtl8125d_hw_phy_config,
 		[RTL_GIGA_MAC_VER_65] = rtl8125d_hw_phy_config,
+		[RTL_GIGA_MAC_VER_66] = rtl8125bp_hw_phy_config,
 		[RTL_GIGA_MAC_VER_70] = rtl8126a_hw_phy_config,
 		[RTL_GIGA_MAC_VER_71] = rtl8126a_hw_phy_config,
 	};