From 69cb89981c7a181d857b634c0740e914d5df79ea Mon Sep 17 00:00:00 2001
From: ChunHao Lin <hau@realtek.com>
Date: Fri, 30 Aug 2024 10:18:10 +0800
Subject: [PATCH] r8169: add support for RTL8126A rev.b

Add support for RTL8126A rev.b. Its XID is 0x64a. It is basically
based on the one with XID 0x649, but with different firmware file.

Signed-off-by: ChunHao Lin <hau@realtek.com>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/20240830021810.11993-1-hau@realtek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 drivers/net/ethernet/realtek/r8169.h          |  1 +
 drivers/net/ethernet/realtek/r8169_main.c     | 42 ++++++++++++-------
 .../net/ethernet/realtek/r8169_phy_config.c   |  1 +
 3 files changed, 29 insertions(+), 15 deletions(-)

--- a/drivers/net/ethernet/realtek/r8169.h
+++ b/drivers/net/ethernet/realtek/r8169.h
@@ -69,6 +69,7 @@ enum mac_version {
 	RTL_GIGA_MAC_VER_61,
 	RTL_GIGA_MAC_VER_63,
 	RTL_GIGA_MAC_VER_65,
+	RTL_GIGA_MAC_VER_66,
 	RTL_GIGA_MAC_NONE
 };
 
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -56,6 +56,7 @@
 #define FIRMWARE_8125A_3	"rtl_nic/rtl8125a-3.fw"
 #define FIRMWARE_8125B_2	"rtl_nic/rtl8125b-2.fw"
 #define FIRMWARE_8126A_2	"rtl_nic/rtl8126a-2.fw"
+#define FIRMWARE_8126A_3	"rtl_nic/rtl8126a-3.fw"
 
 #define TX_DMA_BURST	7	/* Maximum PCI burst, '7' is unlimited */
 #define InterFrameGap	0x03	/* 3 means InterFrameGap = the shortest one */
@@ -138,6 +139,7 @@ static const struct {
 	/* reserve 62 for CFG_METHOD_4 in the vendor driver */
 	[RTL_GIGA_MAC_VER_63] = {"RTL8125B",		FIRMWARE_8125B_2},
 	[RTL_GIGA_MAC_VER_65] = {"RTL8126A",		FIRMWARE_8126A_2},
+	[RTL_GIGA_MAC_VER_66] = {"RTL8126A",		FIRMWARE_8126A_3},
 };
 
 static const struct pci_device_id rtl8169_pci_tbl[] = {
@@ -1228,7 +1230,7 @@ static void rtl_writephy(struct rtl8169_
 	case RTL_GIGA_MAC_VER_31:
 		r8168dp_2_mdio_write(tp, location, val);
 		break;
-	case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_66:
 		r8168g_mdio_write(tp, location, val);
 		break;
 	default:
@@ -1243,7 +1245,7 @@ static int rtl_readphy(struct rtl8169_pr
 	case RTL_GIGA_MAC_VER_28:
 	case RTL_GIGA_MAC_VER_31:
 		return r8168dp_2_mdio_read(tp, location);
-	case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_66:
 		return r8168g_mdio_read(tp, location);
 	default:
 		return r8169_mdio_read(tp, location);
@@ -1452,7 +1454,7 @@ static void rtl_set_d3_pll_down(struct r
 	case RTL_GIGA_MAC_VER_25 ... RTL_GIGA_MAC_VER_26:
 	case RTL_GIGA_MAC_VER_29 ... RTL_GIGA_MAC_VER_30:
 	case RTL_GIGA_MAC_VER_32 ... RTL_GIGA_MAC_VER_37:
-	case RTL_GIGA_MAC_VER_39 ... RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_39 ... RTL_GIGA_MAC_VER_66:
 		if (enable)
 			RTL_W8(tp, PMCH, RTL_R8(tp, PMCH) & ~D3_NO_PLL_DOWN);
 		else
@@ -1619,7 +1621,7 @@ static void __rtl8169_set_wol(struct rtl
 		break;
 	case RTL_GIGA_MAC_VER_34:
 	case RTL_GIGA_MAC_VER_37:
-	case RTL_GIGA_MAC_VER_39 ... RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_39 ... RTL_GIGA_MAC_VER_66:
 		if (wolopts)
 			rtl_mod_config2(tp, 0, PME_SIGNAL);
 		else
@@ -2098,6 +2100,7 @@ static void rtl_set_eee_txidle_timer(str
 	case RTL_GIGA_MAC_VER_61:
 	case RTL_GIGA_MAC_VER_63:
 	case RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_66:
 		tp->tx_lpi_timer = timer_val;
 		RTL_W16(tp, EEE_TXIDLE_TIMER_8125, timer_val);
 		break;
@@ -2227,6 +2230,7 @@ static enum mac_version rtl8169_get_mac_
 		enum mac_version ver;
 	} mac_info[] = {
 		/* 8126A family. */
+		{ 0x7cf, 0x64a,	RTL_GIGA_MAC_VER_66 },
 		{ 0x7cf, 0x649,	RTL_GIGA_MAC_VER_65 },
 
 		/* 8125B family. */
@@ -2498,6 +2502,7 @@ static void rtl_init_rxcfg(struct rtl816
 		break;
 	case RTL_GIGA_MAC_VER_63:
 	case RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_66:
 		RTL_W32(tp, RxConfig, RX_FETCH_DFLT_8125 | RX_DMA_BURST |
 			RX_PAUSE_SLOT_ON);
 		break;
@@ -2684,7 +2689,7 @@ static void rtl_wait_txrx_fifo_empty(str
 	case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_61:
 		rtl_loop_wait_high(tp, &rtl_rxtx_empty_cond, 100, 42);
 		break;
-	case RTL_GIGA_MAC_VER_63 ... RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_63 ... RTL_GIGA_MAC_VER_66:
 		RTL_W8(tp, ChipCmd, RTL_R8(tp, ChipCmd) | StopReq);
 		rtl_loop_wait_high(tp, &rtl_rxtx_empty_cond, 100, 42);
 		rtl_loop_wait_high(tp, &rtl_rxtx_empty_cond_2, 100, 42);
@@ -2927,7 +2932,7 @@ static void rtl_enable_exit_l1(struct rt
 	case RTL_GIGA_MAC_VER_37 ... RTL_GIGA_MAC_VER_38:
 		rtl_eri_set_bits(tp, 0xd4, 0x0c00);
 		break;
-	case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_66:
 		r8168_mac_ocp_modify(tp, 0xc0ac, 0, 0x1f80);
 		break;
 	default:
@@ -2941,7 +2946,7 @@ static void rtl_disable_exit_l1(struct r
 	case RTL_GIGA_MAC_VER_34 ... RTL_GIGA_MAC_VER_38:
 		rtl_eri_clear_bits(tp, 0xd4, 0x1f00);
 		break;
-	case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_66:
 		r8168_mac_ocp_modify(tp, 0xc0ac, 0x1f80, 0);
 		break;
 	default:
@@ -2968,6 +2973,7 @@ static void rtl_hw_aspm_clkreq_enable(st
 		rtl_mod_config5(tp, 0, ASPM_en);
 		switch (tp->mac_version) {
 		case RTL_GIGA_MAC_VER_65:
+		case RTL_GIGA_MAC_VER_66:
 			val8 = RTL_R8(tp, INT_CFG0_8125) | INT_CFG0_CLKREQEN;
 			RTL_W8(tp, INT_CFG0_8125, val8);
 			break;
@@ -2978,7 +2984,7 @@ static void rtl_hw_aspm_clkreq_enable(st
 
 		switch (tp->mac_version) {
 		case RTL_GIGA_MAC_VER_46 ... RTL_GIGA_MAC_VER_48:
-		case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_65:
+		case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_66:
 			/* reset ephy tx/rx disable timer */
 			r8168_mac_ocp_modify(tp, 0xe094, 0xff00, 0);
 			/* chip can trigger L1.2 */
@@ -2990,7 +2996,7 @@ static void rtl_hw_aspm_clkreq_enable(st
 	} else {
 		switch (tp->mac_version) {
 		case RTL_GIGA_MAC_VER_46 ... RTL_GIGA_MAC_VER_48:
-		case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_65:
+		case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_66:
 			r8168_mac_ocp_modify(tp, 0xe092, 0x00ff, 0);
 			break;
 		default:
@@ -2999,6 +3005,7 @@ static void rtl_hw_aspm_clkreq_enable(st
 
 		switch (tp->mac_version) {
 		case RTL_GIGA_MAC_VER_65:
+		case RTL_GIGA_MAC_VER_66:
 			val8 = RTL_R8(tp, INT_CFG0_8125) & ~INT_CFG0_CLKREQEN;
 			RTL_W8(tp, INT_CFG0_8125, val8);
 			break;
@@ -3718,10 +3725,12 @@ static void rtl_hw_start_8125_common(str
 	/* disable new tx descriptor format */
 	r8168_mac_ocp_modify(tp, 0xeb58, 0x0001, 0x0000);
 
-	if (tp->mac_version == RTL_GIGA_MAC_VER_65)
+	if (tp->mac_version == RTL_GIGA_MAC_VER_65 ||
+	    tp->mac_version == RTL_GIGA_MAC_VER_66)
 		RTL_W8(tp, 0xD8, RTL_R8(tp, 0xD8) & ~0x02);
 
-	if (tp->mac_version == RTL_GIGA_MAC_VER_65)
+	if (tp->mac_version == RTL_GIGA_MAC_VER_65 ||
+	    tp->mac_version == RTL_GIGA_MAC_VER_66)
 		r8168_mac_ocp_modify(tp, 0xe614, 0x0700, 0x0400);
 	else if (tp->mac_version == RTL_GIGA_MAC_VER_63)
 		r8168_mac_ocp_modify(tp, 0xe614, 0x0700, 0x0200);
@@ -3739,7 +3748,8 @@ static void rtl_hw_start_8125_common(str
 	r8168_mac_ocp_modify(tp, 0xe056, 0x00f0, 0x0000);
 	r8168_mac_ocp_modify(tp, 0xe040, 0x1000, 0x0000);
 	r8168_mac_ocp_modify(tp, 0xea1c, 0x0003, 0x0001);
-	if (tp->mac_version == RTL_GIGA_MAC_VER_65)
+	if (tp->mac_version == RTL_GIGA_MAC_VER_65 ||
+	    tp->mac_version == RTL_GIGA_MAC_VER_66)
 		r8168_mac_ocp_modify(tp, 0xea1c, 0x0300, 0x0000);
 	else
 		r8168_mac_ocp_modify(tp, 0xea1c, 0x0004, 0x0000);
@@ -3853,6 +3863,7 @@ static void rtl_hw_config(struct rtl8169
 		[RTL_GIGA_MAC_VER_61] = rtl_hw_start_8125a_2,
 		[RTL_GIGA_MAC_VER_63] = rtl_hw_start_8125b,
 		[RTL_GIGA_MAC_VER_65] = rtl_hw_start_8126a,
+		[RTL_GIGA_MAC_VER_66] = rtl_hw_start_8126a,
 	};
 
 	if (hw_configs[tp->mac_version])
@@ -3873,6 +3884,7 @@ static void rtl_hw_start_8125(struct rtl
 		break;
 	case RTL_GIGA_MAC_VER_63:
 	case RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_66:
 		for (i = 0xa00; i < 0xa80; i += 4)
 			RTL_W32(tp, i, 0);
 		RTL_W16(tp, INT_CFG1_8125, 0x0000);
@@ -4101,7 +4113,7 @@ static void rtl8169_cleanup(struct rtl81
 		RTL_W8(tp, ChipCmd, RTL_R8(tp, ChipCmd) | StopReq);
 		rtl_loop_wait_high(tp, &rtl_txcfg_empty_cond, 100, 666);
 		break;
-	case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_66:
 		rtl_enable_rxdvgate(tp);
 		fsleep(2000);
 		break;
@@ -4258,7 +4270,7 @@ static unsigned int rtl_quirk_packet_pad
 
 	switch (tp->mac_version) {
 	case RTL_GIGA_MAC_VER_34:
-	case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_66:
 		padto = max_t(unsigned int, padto, ETH_ZLEN);
 		break;
 	default:
@@ -5296,7 +5308,7 @@ static void rtl_hw_initialize(struct rtl
 	case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_48:
 		rtl_hw_init_8168g(tp);
 		break;
-	case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_65:
+	case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_66:
 		rtl_hw_init_8125(tp);
 		break;
 	default:
--- a/drivers/net/ethernet/realtek/r8169_phy_config.c
+++ b/drivers/net/ethernet/realtek/r8169_phy_config.c
@@ -1161,6 +1161,7 @@ void r8169_hw_phy_config(struct rtl8169_
 		[RTL_GIGA_MAC_VER_61] = rtl8125a_2_hw_phy_config,
 		[RTL_GIGA_MAC_VER_63] = rtl8125b_hw_phy_config,
 		[RTL_GIGA_MAC_VER_65] = rtl8126a_hw_phy_config,
+		[RTL_GIGA_MAC_VER_66] = rtl8126a_hw_phy_config,
 	};
 
 	if (phy_configs[ver])
