<div dir="ltr">I've seen a lot of 2.5G (I'm running that on a couple home servers) but I dont recall seeing 5G onboard...</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Feb 9, 2024 at 6:17 PM Dave Taht via LibreQoS <<a href="mailto:libreqos@lists.bufferbloat.net">libreqos@lists.bufferbloat.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I had no idea 5Gbps ethernet on the motherboard was a thing.<br>
<br>
---------- Forwarded message ---------<br>
From: Joe Salmeri <<a href="mailto:jmscdba@gmail.com" target="_blank">jmscdba@gmail.com</a>><br>
Date: Tue, Jan 30, 2024 at 11:43 AM<br>
Subject: Re: Kernel Module r8169 and the Realtek 8126 PCIe 5 G/bps<br>
WIRED ethernet adapter<br>
To: Heiner Kallweit <<a href="mailto:hkallweit1@gmail.com" target="_blank">hkallweit1@gmail.com</a>>, <a href="mailto:netdev@vger.kernel.org" target="_blank">netdev@vger.kernel.org</a><br>
<<a href="mailto:netdev@vger.kernel.org" target="_blank">netdev@vger.kernel.org</a>><br>
<br>
<br>
On 1/29/24 17:19, Heiner Kallweit wrote:<br>
> On 29.01.2024 19:31, Joe Salmeri wrote:<br>
>> Hi,<br>
>><br>
>> I recently built a new PC using the Asus z790 Maximus Formula motherboard.<br>
>><br>
>> The z790 Formula uses the Realtek 8126 PCIe 5 G/bps WIRED ethernet adapter.<br>
>><br>
>> I am using openSUSE Tumbleweed build 20231228 with kernel 6.6.7-1<br>
>><br>
>> There does not seem to be a driver for the Realtek 8126.<br>
>><br>
>> Here is the device info from "lspci | grep -i net"<br>
>><br>
>> 04:00.0 Network controller: Intel Corporation Device 272b (rev 1a)<br>
>> 05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. Device 8126 (rev 01)<br>
>><br>
>> So it is detects the 8126 just fine it just doesn't have a driver for it.<br>
>><br>
>> I checked <a href="http://realtek.com" rel="noreferrer" target="_blank">realtek.com</a> and found<br>
>><br>
>> <a href="https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-pci-express-software" rel="noreferrer" target="_blank">https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-pci-express-software</a><br>
>><br>
>> The download link still says 8125 ( and kernel 6.4 ), but I compiled the source and since I have Secure boot enabled, I signed the<br>
>> resulting module file.<br>
>><br>
>> The driver loads successfully and I now have wired networking and it has worked flawlessly for the last 2 months.<br>
>><br>
>> I submitted a bug in Tumbleweed requesting support for the Realtek 8126 be added and was informed that the r8169 kernel module<br>
>> is what is used to support the older Realtek 8125 device.<br>
>><br>
>> Since the drivers from Realtek seem to support both the r8125 and my newer r8126, the Tumbleweed support prepared a test<br>
>> kernel 6.6.7-1 for me where they added the PCI entry for the r8126 and I installed and tested it out.<br>
>><br>
>> Although it does now load the r8169 module with their test kernel, the r8126 device still does not work.<br>
>><br>
>> The only 2 lines that reference the r8169 in the dmesg log are these 2 lines:<br>
>><br>
>> [ 3.237151] r8169 0000:05:00.0: enabling device (0000 -> 0003)<br>
>> [ 3.237289] r8169 0000:05:00.0: error -ENODEV: unknown chip XID 649, contact r8169 maintainers (see MAINTAINERS file)<br>
>><br>
>> I reported the results of the test to Tumbleweed support and they said that additional tweaks will be needed for the r8169<br>
>> module to support the r8126 wired network adapter and thatn I should request to you to add support.<br>
>><br>
>> The details of the openSUSE bug report on the issue can be found here:<br>
>><br>
>> <a href="https://bugzilla.suse.com/show_bug.cgi?id=1217417" rel="noreferrer" target="_blank">https://bugzilla.suse.com/show_bug.cgi?id=1217417</a><br>
>><br>
>> Could we please get support added for the r8126 - Realtek 8126 PCIe 5 G/bps WIRED ethernet adapter added to the kernel ?<br>
>><br>
> Thanks for the report. Actually it's not a bug report but a feature request.<br>
> Realtek provides no information about new chip versions and no data sheets, therefore the only<br>
> source of information is the r8125 vendor driver. Each chip requires a lot of version-specific<br>
> handling, therefore the first steps you described go in the right direction, but are by far not<br>
> sufficient. Patch below applies on linux-next, please test whether it works for you, and report back.<br>
><br>
> Disclaimer:<br>
> r8125 references a firmware file that hasn't been provided to linux-firmware by Realtek yet.<br>
> Typically the firmware files tune PHY parameters to deal with compatibility issues.<br>
> In addition r8125 includes a lot of PHY tuning for RTL8126A.<br>
> Depending on cabling, link partner etc. the patch may work for you, or you may experience<br>
> link instability or worst case no link at all.<br>
><br>
> Maybe RTL8126a also has a new integrated PHY version that isn't supported yet.<br>
> In this case the driver will complain with the following message and I'd need the PHY ID.<br>
> "no dedicated PHY driver found for PHY ID xxx"<br>
<br>
Thanks very much for your quick response.<br>
<br>
I forward your patch to the openSUSE people I have been working and they<br>
prepared a new test kernel 6.7.2 with the patches for for me to test.<br>
<br>
I just installed the test kernel provided with the patches but just as<br>
you expected it complains about no dedicated PHY driver found.<br>
<br>
Here is the dmesg | grep 8169 output with the information you requested<br>
<br>
[ 3.176753] r8169 0000:05:00.0: enabling device (0000 -> 0003)<br>
[ 3.184887] r8169 0000:05:00.0: no dedicated PHY driver found for PHY<br>
ID 0x001cc862, maybe realtek.ko needs to be added to initramfs?<br>
[ 3.184912] r8169: probe of 0000:05:00.0 failed with error -49<br>
<br>
Thank you for your efforts.<br>
<br>
Please let me know if you need any further details.<br>
<br>
> ---<br>
> drivers/net/ethernet/realtek/r8169.h | 1 +<br>
> drivers/net/ethernet/realtek/r8169_main.c | 91 +++++++++++++++----<br>
> .../net/ethernet/realtek/r8169_phy_config.c | 1 +<br>
> 3 files changed, 77 insertions(+), 16 deletions(-)<br>
><br>
> diff --git a/drivers/net/ethernet/realtek/r8169.h b/drivers/net/ethernet/realtek/r8169.h<br>
> index 81567fcf3..c921456ed 100644<br>
> --- a/drivers/net/ethernet/realtek/r8169.h<br>
> +++ b/drivers/net/ethernet/realtek/r8169.h<br>
> @@ -68,6 +68,7 @@ enum mac_version {<br>
> /* support for RTL_GIGA_MAC_VER_60 has been removed */<br>
> RTL_GIGA_MAC_VER_61,<br>
> RTL_GIGA_MAC_VER_63,<br>
> + RTL_GIGA_MAC_VER_65,<br>
> RTL_GIGA_MAC_NONE<br>
> };<br>
><br>
> diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c<br>
> index e0abdbcfa..ebf7a3b13 100644<br>
> --- a/drivers/net/ethernet/realtek/r8169_main.c<br>
> +++ b/drivers/net/ethernet/realtek/r8169_main.c<br>
> @@ -55,6 +55,7 @@<br>
> #define FIRMWARE_8107E_2 "rtl_nic/rtl8107e-2.fw"<br>
> #define FIRMWARE_8125A_3 "rtl_nic/rtl8125a-3.fw"<br>
> #define FIRMWARE_8125B_2 "rtl_nic/rtl8125b-2.fw"<br>
> +#define FIRMWARE_8126A_2 "rtl_nic/rtl8126a-2.fw"<br>
><br>
> #define TX_DMA_BURST 7 /* Maximum PCI burst, '7' is unlimited */<br>
> #define InterFrameGap 0x03 /* 3 means InterFrameGap = the shortest one */<br>
> @@ -136,6 +137,7 @@ static const struct {<br>
> [RTL_GIGA_MAC_VER_61] = {"RTL8125A", FIRMWARE_8125A_3},<br>
> /* reserve 62 for CFG_METHOD_4 in the vendor driver */<br>
> [RTL_GIGA_MAC_VER_63] = {"RTL8125B", FIRMWARE_8125B_2},<br>
> + [RTL_GIGA_MAC_VER_65] = {"RTL8126A", FIRMWARE_8126A_2},<br>
> };<br>
><br>
> static const struct pci_device_id rtl8169_pci_tbl[] = {<br>
> @@ -158,6 +160,7 @@ static const struct pci_device_id rtl8169_pci_tbl[] = {<br>
> { PCI_VENDOR_ID_LINKSYS, 0x1032, PCI_ANY_ID, 0x0024 },<br>
> { 0x0001, 0x8168, PCI_ANY_ID, 0x2410 },<br>
> { PCI_VDEVICE(REALTEK, 0x8125) },<br>
> + { PCI_VDEVICE(REALTEK, 0x8126) },<br>
> { PCI_VDEVICE(REALTEK, 0x3000) },<br>
> {}<br>
> };<br>
> @@ -327,8 +330,12 @@ enum rtl8168_registers {<br>
> };<br>
><br>
> enum rtl8125_registers {<br>
> + INT_CFG0_8125 = 0x34,<br>
> +#define INT_CFG0_ENABLE_8125 BIT(0)<br>
> +#define INT_CFG0_CLKREQEN BIT(3)<br>
> IntrMask_8125 = 0x38,<br>
> IntrStatus_8125 = 0x3c,<br>
> + INT_CFG1_8125 = 0x7a,<br>
> TxPoll_8125 = 0x90,<br>
> MAC0_BKP = 0x19e0,<br>
> EEE_TXIDLE_TIMER_8125 = 0x6048,<br>
> @@ -1139,7 +1146,7 @@ static void rtl_writephy(struct rtl8169_private *tp, int location, int val)<br>
> case RTL_GIGA_MAC_VER_31:<br>
> r8168dp_2_mdio_write(tp, location, val);<br>
> break;<br>
> - case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_63:<br>
> + case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_65:<br>
> r8168g_mdio_write(tp, location, val);<br>
> break;<br>
> default:<br>
> @@ -1154,7 +1161,7 @@ static int rtl_readphy(struct rtl8169_private *tp, int location)<br>
> case RTL_GIGA_MAC_VER_28:<br>
> case RTL_GIGA_MAC_VER_31:<br>
> return r8168dp_2_mdio_read(tp, location);<br>
> - case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_63:<br>
> + case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_65:<br>
> return r8168g_mdio_read(tp, location);<br>
> default:<br>
> return r8169_mdio_read(tp, location);<br>
> @@ -1507,7 +1514,7 @@ static void __rtl8169_set_wol(struct rtl8169_private *tp, u32 wolopts)<br>
> break;<br>
> case RTL_GIGA_MAC_VER_34:<br>
> case RTL_GIGA_MAC_VER_37:<br>
> - case RTL_GIGA_MAC_VER_39 ... RTL_GIGA_MAC_VER_63:<br>
> + case RTL_GIGA_MAC_VER_39 ... RTL_GIGA_MAC_VER_65:<br>
> if (wolopts)<br>
> rtl_mod_config2(tp, 0, PME_SIGNAL);<br>
> else<br>
> @@ -2073,6 +2080,9 @@ static enum mac_version rtl8169_get_mac_version(u16 xid, bool gmii)<br>
> u16 val;<br>
> enum mac_version ver;<br>
> } mac_info[] = {<br>
> + /* 8126A family. */<br>
> + { 0x7cf, 0x649, RTL_GIGA_MAC_VER_65 },<br>
> +<br>
> /* 8125B family. */<br>
> { 0x7cf, 0x641, RTL_GIGA_MAC_VER_63 },<br>
><br>
> @@ -2343,6 +2353,7 @@ static void rtl_init_rxcfg(struct rtl8169_private *tp)<br>
> RTL_W32(tp, RxConfig, RX_FETCH_DFLT_8125 | RX_DMA_BURST);<br>
> break;<br>
> case RTL_GIGA_MAC_VER_63:<br>
> + case RTL_GIGA_MAC_VER_65:<br>
> RTL_W32(tp, RxConfig, RX_FETCH_DFLT_8125 | RX_DMA_BURST |<br>
> RX_PAUSE_SLOT_ON);<br>
> break;<br>
> @@ -2772,7 +2783,7 @@ static void rtl_enable_exit_l1(struct rtl8169_private *tp)<br>
> case RTL_GIGA_MAC_VER_37 ... RTL_GIGA_MAC_VER_38:<br>
> rtl_eri_set_bits(tp, 0xd4, 0x0c00);<br>
> break;<br>
> - case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_63:<br>
> + case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_65:<br>
> r8168_mac_ocp_modify(tp, 0xc0ac, 0, 0x1f80);<br>
> break;<br>
> default:<br>
> @@ -2786,7 +2797,7 @@ static void rtl_disable_exit_l1(struct rtl8169_private *tp)<br>
> case RTL_GIGA_MAC_VER_34 ... RTL_GIGA_MAC_VER_38:<br>
> rtl_eri_clear_bits(tp, 0xd4, 0x1f00);<br>
> break;<br>
> - case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_63:<br>
> + case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_65:<br>
> r8168_mac_ocp_modify(tp, 0xc0ac, 0x1f80, 0);<br>
> break;<br>
> default:<br>
> @@ -2796,6 +2807,8 @@ static void rtl_disable_exit_l1(struct rtl8169_private *tp)<br>
><br>
> static void rtl_hw_aspm_clkreq_enable(struct rtl8169_private *tp, bool enable)<br>
> {<br>
> + u8 val8;<br>
> +<br>
> if (tp->mac_version < RTL_GIGA_MAC_VER_32)<br>
> return;<br>
><br>
> @@ -2809,11 +2822,19 @@ static void rtl_hw_aspm_clkreq_enable(struct rtl8169_private *tp, bool enable)<br>
> return;<br>
><br>
> rtl_mod_config5(tp, 0, ASPM_en);<br>
> - rtl_mod_config2(tp, 0, ClkReqEn);<br>
> + switch (tp->mac_version) {<br>
> + case RTL_GIGA_MAC_VER_65:<br>
> + val8 = RTL_R8(tp, INT_CFG0_8125) | INT_CFG0_CLKREQEN;<br>
> + RTL_W8(tp, INT_CFG0_8125, val8);<br>
> + break;<br>
> + default:<br>
> + rtl_mod_config2(tp, 0, ClkReqEn);<br>
> + break;<br>
> + }<br>
><br>
> switch (tp->mac_version) {<br>
> case RTL_GIGA_MAC_VER_46 ... RTL_GIGA_MAC_VER_48:<br>
> - case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_63:<br>
> + case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_65:<br>
> /* reset ephy tx/rx disable timer */<br>
> r8168_mac_ocp_modify(tp, 0xe094, 0xff00, 0);<br>
> /* chip can trigger L1.2 */<br>
> @@ -2825,14 +2846,22 @@ static void rtl_hw_aspm_clkreq_enable(struct rtl8169_private *tp, bool enable)<br>
> } else {<br>
> switch (tp->mac_version) {<br>
> case RTL_GIGA_MAC_VER_46 ... RTL_GIGA_MAC_VER_48:<br>
> - case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_63:<br>
> + case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_65:<br>
> r8168_mac_ocp_modify(tp, 0xe092, 0x00ff, 0);<br>
> break;<br>
> default:<br>
> break;<br>
> }<br>
><br>
> - rtl_mod_config2(tp, ClkReqEn, 0);<br>
> + switch (tp->mac_version) {<br>
> + case RTL_GIGA_MAC_VER_65:<br>
> + val8 = RTL_R8(tp, INT_CFG0_8125) & ~INT_CFG0_CLKREQEN;<br>
> + RTL_W8(tp, INT_CFG0_8125, val8);<br>
> + break;<br>
> + default:<br>
> + rtl_mod_config2(tp, ClkReqEn, 0);<br>
> + break;<br>
> + }<br>
> rtl_mod_config5(tp, ASPM_en, 0);<br>
> }<br>
> }<br>
> @@ -3545,10 +3574,15 @@ static void rtl_hw_start_8125_common(struct rtl8169_private *tp)<br>
> /* disable new tx descriptor format */<br>
> r8168_mac_ocp_modify(tp, 0xeb58, 0x0001, 0x0000);<br>
><br>
> - if (tp->mac_version == RTL_GIGA_MAC_VER_63)<br>
> + if (tp->mac_version == RTL_GIGA_MAC_VER_65)<br>
> + RTL_W8(tp, 0xD8, RTL_R8(tp, 0xD8) & ~0x02);<br>
> +<br>
> + if (tp->mac_version == RTL_GIGA_MAC_VER_65)<br>
> + r8168_mac_ocp_modify(tp, 0xe614, 0x0700, 0x0400);<br>
> + else if (tp->mac_version == RTL_GIGA_MAC_VER_63)<br>
> r8168_mac_ocp_modify(tp, 0xe614, 0x0700, 0x0200);<br>
> else<br>
> - r8168_mac_ocp_modify(tp, 0xe614, 0x0700, 0x0400);<br>
> + r8168_mac_ocp_modify(tp, 0xe614, 0x0700, 0x0300);<br>
><br>
> if (tp->mac_version == RTL_GIGA_MAC_VER_63)<br>
> r8168_mac_ocp_modify(tp, 0xe63e, 0x0c30, 0x0000);<br>
> @@ -3561,6 +3595,10 @@ static void rtl_hw_start_8125_common(struct rtl8169_private *tp)<br>
> r8168_mac_ocp_modify(tp, 0xe056, 0x00f0, 0x0030);<br>
> r8168_mac_ocp_modify(tp, 0xe040, 0x1000, 0x0000);<br>
> r8168_mac_ocp_modify(tp, 0xea1c, 0x0003, 0x0001);<br>
> + if (tp->mac_version == RTL_GIGA_MAC_VER_65)<br>
> + r8168_mac_ocp_modify(tp, 0xea1c, 0x0300, 0x0000);<br>
> + else<br>
> + r8168_mac_ocp_modify(tp, 0xea1c, 0x0004, 0x0000);<br>
> r8168_mac_ocp_modify(tp, 0xe0c0, 0x4f0f, 0x4403);<br>
> r8168_mac_ocp_modify(tp, 0xe052, 0x0080, 0x0068);<br>
> r8168_mac_ocp_modify(tp, 0xd430, 0x0fff, 0x047f);<br>
> @@ -3575,10 +3613,10 @@ static void rtl_hw_start_8125_common(struct rtl8169_private *tp)<br>
><br>
> rtl_loop_wait_low(tp, &rtl_mac_ocp_e00e_cond, 1000, 10);<br>
><br>
> - if (tp->mac_version == RTL_GIGA_MAC_VER_63)<br>
> - rtl8125b_config_eee_mac(tp);<br>
> - else<br>
> + if (tp->mac_version == RTL_GIGA_MAC_VER_61)<br>
> rtl8125a_config_eee_mac(tp);<br>
> + else<br>
> + rtl8125b_config_eee_mac(tp);<br>
><br>
> rtl_disable_rxdvgate(tp);<br>
> }<br>
> @@ -3622,6 +3660,12 @@ static void rtl_hw_start_8125b(struct rtl8169_private *tp)<br>
> rtl_hw_start_8125_common(tp);<br>
> }<br>
><br>
> +static void rtl_hw_start_8126a(struct rtl8169_private *tp)<br>
> +{<br>
> + rtl_set_def_aspm_entry_latency(tp);<br>
> + rtl_hw_start_8125_common(tp);<br>
> +}<br>
> +<br>
> static void rtl_hw_config(struct rtl8169_private *tp)<br>
> {<br>
> static const rtl_generic_fct hw_configs[] = {<br>
> @@ -3664,6 +3708,7 @@ static void rtl_hw_config(struct rtl8169_private *tp)<br>
> [RTL_GIGA_MAC_VER_53] = rtl_hw_start_8117,<br>
> [RTL_GIGA_MAC_VER_61] = rtl_hw_start_8125a_2,<br>
> [RTL_GIGA_MAC_VER_63] = rtl_hw_start_8125b,<br>
> + [RTL_GIGA_MAC_VER_65] = rtl_hw_start_8126a,<br>
> };<br>
><br>
> if (hw_configs[tp->mac_version])<br>
> @@ -3674,9 +3719,23 @@ static void rtl_hw_start_8125(struct rtl8169_private *tp)<br>
> {<br>
> int i;<br>
><br>
> + RTL_W8(tp, INT_CFG0_8125, 0x00);<br>
> +<br>
> /* disable interrupt coalescing */<br>
> - for (i = 0xa00; i < 0xb00; i += 4)<br>
> - RTL_W32(tp, i, 0);<br>
> + switch (tp->mac_version) {<br>
> + case RTL_GIGA_MAC_VER_61:<br>
> + for (i = 0xa00; i < 0xb00; i += 4)<br>
> + RTL_W32(tp, i, 0);<br>
> + break;<br>
> + case RTL_GIGA_MAC_VER_63:<br>
> + case RTL_GIGA_MAC_VER_65:<br>
> + for (i = 0xa00; i < 0xa80; i += 4)<br>
> + RTL_W32(tp, i, 0);<br>
> + RTL_W16(tp, INT_CFG1_8125, 0x0000);<br>
> + break;<br>
> + default:<br>
> + break;<br>
> + }<br>
><br>
> rtl_hw_config(tp);<br>
> }<br>
> diff --git a/drivers/net/ethernet/realtek/r8169_phy_config.c b/drivers/net/ethernet/realtek/r8169_phy_config.c<br>
> index b50f16786..badf78f81 100644<br>
> --- a/drivers/net/ethernet/realtek/r8169_phy_config.c<br>
> +++ b/drivers/net/ethernet/realtek/r8169_phy_config.c<br>
> @@ -1152,6 +1152,7 @@ void r8169_hw_phy_config(struct rtl8169_private *tp, struct phy_device *phydev,<br>
> [RTL_GIGA_MAC_VER_53] = rtl8117_hw_phy_config,<br>
> [RTL_GIGA_MAC_VER_61] = rtl8125a_2_hw_phy_config,<br>
> [RTL_GIGA_MAC_VER_63] = rtl8125b_hw_phy_config,<br>
> + [RTL_GIGA_MAC_VER_65] = NULL,<br>
> };<br>
><br>
> if (phy_configs[ver])<br>
<br>
<br>
--<br>
Regards,<br>
<br>
Joe<br>
<br>
<br>
<br>
<br>
-- <br>
40 years of net history, a couple songs:<br>
<a href="https://www.youtube.com/watch?v=D9RGX6QFm5E" rel="noreferrer" target="_blank">https://www.youtube.com/watch?v=D9RGX6QFm5E</a><br>
Dave Täht CSO, LibreQos<br>
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