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r8169: enable LTR support

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

Signed-off-by: Javen Xu <javen_xu@realsil.com.cn>
Link: https://patch.msgid.link/20260109070415.1115-3-javen_xu@realsil.com.cn
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Javen Xu 2026-01-09 15:04:15 +08:00 committed by Paolo Abeni
parent 3259d2cf94
commit 9ab94a32af
1 changed files with 98 additions and 0 deletions
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98
drivers/net/ethernet/realtek/r8169_main.c
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@ -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: