Commit 9ab94a32 authored by Javen Xu's avatar Javen Xu Committed by Paolo Abeni
Browse files

r8169: enable LTR support 



This patch will enable
RTL8168FP/RTL8168EP/RTL8168H/RTL8125/RTL8126/RTL8127 LTR support.

Signed-off-by: default avatarJaven Xu <javen_xu@realsil.com.cn>
Link: https://patch.msgid.link/20260109070415.1115-3-javen_xu@realsil.com.cn


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 3259d2cf

drivers/net/ethernet/realtek/r8169_main.c

+98 −0
Original line number Diff line number Diff line
@@ -313,6 +313,15 @@ enum rtl_registers { 
	IBIMR0          = 0xfa,

	IBISR0          = 0xfb,

	FuncForceEvent	= 0xfc,



	ALDPS_LTR	= 0xe0a2,

	LTR_OBFF_LOCK	= 0xe032,

	LTR_SNOOP	= 0xe034,



#define ALDPS_LTR_EN			BIT(0)

#define LTR_OBFF_LOCK_EN		BIT(0)

#define LINK_SPEED_CHANGE_EN		BIT(14)

#define LTR_SNOOP_EN			GENMASK(15, 14)

};



enum rtl8168_8101_registers {
@@ -398,6 +407,8 @@ enum rtl8168_registers { 
#define PWM_EN				(1 << 22)

#define RXDV_GATED_EN			(1 << 19)

#define EARLY_TALLY_EN			(1 << 16)

	COMBO_LTR_EXTEND	= 0xb6,

#define COMBO_LTR_EXTEND_EN	BIT(0)

};



enum rtl8125_registers {
@@ -2998,6 +3009,92 @@ static void rtl_disable_exit_l1(struct rtl8169_private *tp) 
	}

}



static void rtl_enable_ltr(struct rtl8169_private *tp)

{

	switch (tp->mac_version) {

	case RTL_GIGA_MAC_VER_80:

		r8168_mac_ocp_write(tp, 0xcdd0, 0x9003);

		r8168_mac_ocp_modify(tp, LTR_SNOOP, 0x0000, LTR_SNOOP_EN);

		r8168_mac_ocp_modify(tp, ALDPS_LTR, 0x0000, ALDPS_LTR_EN);

		r8168_mac_ocp_write(tp, 0xcdd2, 0x8c09);

		r8168_mac_ocp_write(tp, 0xcdd8, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdd4, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdda, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdd6, 0x9003);

		r8168_mac_ocp_write(tp, 0xcddc, 0x9003);

		r8168_mac_ocp_write(tp, 0xcde8, 0x887a);

		r8168_mac_ocp_write(tp, 0xcdea, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdec, 0x8c09);

		r8168_mac_ocp_write(tp, 0xcdee, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdf0, 0x8a62);

		r8168_mac_ocp_write(tp, 0xcdf2, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdf4, 0x883e);

		r8168_mac_ocp_write(tp, 0xcdf6, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdf8, 0x8849);

		r8168_mac_ocp_write(tp, 0xcdfa, 0x9003);

		r8168_mac_ocp_modify(tp, LTR_OBFF_LOCK, 0x0000, LINK_SPEED_CHANGE_EN);

		break;

	case RTL_GIGA_MAC_VER_70:

		r8168_mac_ocp_write(tp, 0xcdd0, 0x9003);

		r8168_mac_ocp_modify(tp, LTR_SNOOP, 0x0000, LTR_SNOOP_EN);

		r8168_mac_ocp_modify(tp, ALDPS_LTR, 0x0000, ALDPS_LTR_EN);

		r8168_mac_ocp_write(tp, 0xcdd2, 0x8c09);

		r8168_mac_ocp_write(tp, 0xcdd8, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdd4, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdda, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdd6, 0x9003);

		r8168_mac_ocp_write(tp, 0xcddc, 0x9003);

		r8168_mac_ocp_write(tp, 0xcde8, 0x887a);

		r8168_mac_ocp_write(tp, 0xcdea, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdec, 0x8c09);

		r8168_mac_ocp_write(tp, 0xcdee, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdf0, 0x8a62);

		r8168_mac_ocp_write(tp, 0xcdf2, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdf4, 0x883e);

		r8168_mac_ocp_write(tp, 0xcdf6, 0x9003);

		r8168_mac_ocp_modify(tp, LTR_OBFF_LOCK, 0x0000, LINK_SPEED_CHANGE_EN);

		break;

	case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_66:

		r8168_mac_ocp_write(tp, 0xcdd0, 0x9003);

		r8168_mac_ocp_modify(tp, LTR_SNOOP, 0x0000, LTR_SNOOP_EN);

		r8168_mac_ocp_modify(tp, ALDPS_LTR, 0x0000, ALDPS_LTR_EN);

		r8168_mac_ocp_write(tp, 0xcdd2, 0x889c);

		r8168_mac_ocp_write(tp, 0xcdd8, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdd4, 0x8c30);

		r8168_mac_ocp_write(tp, 0xcdda, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdd6, 0x9003);

		r8168_mac_ocp_write(tp, 0xcddc, 0x9003);

		r8168_mac_ocp_write(tp, 0xcde8, 0x883e);

		r8168_mac_ocp_write(tp, 0xcdea, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdec, 0x889c);

		r8168_mac_ocp_write(tp, 0xcdee, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdf0, 0x8C09);

		r8168_mac_ocp_write(tp, 0xcdf2, 0x9003);

		r8168_mac_ocp_modify(tp, LTR_OBFF_LOCK, 0x0000, LINK_SPEED_CHANGE_EN);

		break;

	case RTL_GIGA_MAC_VER_46 ... RTL_GIGA_MAC_VER_48:

	case RTL_GIGA_MAC_VER_52:

		r8168_mac_ocp_modify(tp, ALDPS_LTR, 0x0000, ALDPS_LTR_EN);

		RTL_W8(tp, COMBO_LTR_EXTEND, RTL_R8(tp, COMBO_LTR_EXTEND) | COMBO_LTR_EXTEND_EN);

		fallthrough;

	case RTL_GIGA_MAC_VER_51:

		r8168_mac_ocp_modify(tp, LTR_SNOOP, 0x0000, LTR_SNOOP_EN);

		r8168_mac_ocp_write(tp, 0xe02c, 0x1880);

		r8168_mac_ocp_write(tp, 0xe02e, 0x4880);

		r8168_mac_ocp_write(tp, 0xcdd8, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdda, 0x9003);

		r8168_mac_ocp_write(tp, 0xcddc, 0x9003);

		r8168_mac_ocp_write(tp, 0xcdd2, 0x883c);

		r8168_mac_ocp_write(tp, 0xcdd4, 0x8c12);

		r8168_mac_ocp_write(tp, 0xcdd6, 0x9003);

		break;

	default:

		return;

	}

	/* chip can trigger LTR */

	r8168_mac_ocp_modify(tp, LTR_OBFF_LOCK, 0x0003, LTR_OBFF_LOCK_EN);

}



static void rtl_hw_aspm_clkreq_enable(struct rtl8169_private *tp, bool enable)

{

	u8 val8;
@@ -3026,6 +3123,7 @@ static void rtl_hw_aspm_clkreq_enable(struct rtl8169_private *tp, bool enable) 
			break;

		}



		rtl_enable_ltr(tp);

		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_LAST: