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Message-ID: <CACPK8Xe8_S6jgs-DxpB0Veu=25JXftTLeK7nGhLJ51GghSeVHw@mail.gmail.com>
Date:   Tue, 22 Dec 2020 02:26:25 +0000
From:   Joel Stanley <joel@....id.au>
To:     Hongwei Zhang <hongweiz@....com>,
        Ryan Chen <ryan_chen@...eedtech.com>
Cc:     linux-aspeed <linux-aspeed@...ts.ozlabs.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
        Jakub Kicinski <kuba@...nel.org>,
        David S Miller <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>, Andrew Jeffery <andrew@...id.au>
Subject: Re: [Aspeed,ncsi-rx, v1 0/1] net: ftgmac100: Fix AST2600EVB NCSI RX issue

On Mon, 21 Dec 2020 at 17:01, Hongwei Zhang <hongweiz@....com> wrote:
>
> Dear Reviewer,
>
> When FTGMAC100 driver is used on other NCSI Ethernet controllers, few
> controllers have compatible issue. One example is Intel I210 Ethernet
> controller on AST2600 BMC, with FTGMAC100 driver, it always trigger
> RXDES0_RX_ERR error, cause NCSI initialization failure, removing
> FTGMAC100_RXDES0_RX_ERR bit from RXDES0_ANY_ERROR fix the issue.

I work with a few systems that use the i210 on the 2600. We haven't
seen this issue in our testing.

Is there something specific about the setup that you use to trigger this?

Ryan, is this an issue that Aspeed is aware of?

Cheers,

Joel

>
> Here are part of the debug logs:
> ......
> [   35.075552] ftgmac100_hard_start_xmit TXDESO=b000003c
> [   35.080843] ftgmac100 1e660000.ethernet eth0: tx_complete_packet 55
> [   35.087141] ftgmac100 1e660000.ethernet eth0: rx_packet_error RXDES0=0xb0070040
> [   35.094448] ftgmac100_rx_packet RXDES0=b0070040 RXDES1=f0800000 RXDES2=88f8
> [   35.101498] ftgmac100 1e660000.ethernet eth0: rx_packet_error 0xb0070040
> [   35.108205] ftgmac100 1e660000.ethernet eth0: [ISR] = 0xb0070040: RX_ERR
> [   35.287808] i2c i2c-1: new_device: Instantiated device slave-mqueue at 0x12
> [   35.428379] ftgmac100_hard_start_xmit TXDESO=b000003c
> [   35.433624] ftgmac100 1e660000.ethernet eth0: tx_complete_packet 56
> [   35.439915] ftgmac100 1e660000.ethernet eth0: rx_packet_error RXDES0=0xb0070040
> [   35.447225] ftgmac100_rx_packet RXDES0=b0070040 RXDES1=f0800000 RXDES2=88f8
> [   35.454273] ftgmac100 1e660000.ethernet eth0: rx_packet_error 0xb0070040
> [   35.460972] ftgmac100 1e660000.ethernet eth0: [ISR] = 0xb0070040: RX_ERR
> [   35.797825] ftgmac100_hard_start_xmit TXDESO=b000003c
> [   35.803241] ftgmac100 1e660000.ethernet eth0: tx_complete_packet 57
> [   35.809541] ftgmac100 1e660000.ethernet eth0: rx_packet_error RXDES0=0xb0070040
> [   35.816848] ftgmac100_rx_packet RXDES0=b0070040 RXDES1=f0800000 RXDES2=88f8
> [   35.823899] ftgmac100 1e660000.ethernet eth0: rx_packet_error 0xb0070040
> [   35.830597] ftgmac100 1e660000.ethernet eth0: [ISR] = 0xb0070040: RX_ERR
> [   36.179914] ftgmac100_hard_start_xmit TXDESO=b000003c
> [   36.185160] ftgmac100 1e660000.ethernet eth0: tx_complete_packet 58
> [   36.191454] ftgmac100 1e660000.ethernet eth0: rx_packet_error RXDES0=0xb0070040
> [   36.198761] ftgmac100_rx_packet RXDES0=b0070040 RXDES1=f0800000 RXDES2=88f8
> [   36.205813] ftgmac100 1e660000.ethernet eth0: rx_packet_error 0xb0070040
> [   36.212513] ftgmac100 1e660000.ethernet eth0: [ISR] = 0xb0070040: RX_ERR
> [   36.593688] ftgmac100_hard_start_xmit TXDESO=b000003c
> [   36.602937] ftgmac100 1e660000.ethernet eth0: tx_complete_packet 59
> [   36.609244] ftgmac100 1e660000.ethernet eth0: rx_packet_error RXDES0=0xb0070040
> [   36.616558] ftgmac100_rx_packet RXDES0=b0070040 RXDES1=f0800000 RXDES2=88f8
> [   36.623608] ftgmac100 1e660000.ethernet eth0: rx_packet_error 0xb0070040
> [   36.630315] ftgmac100 1e660000.ethernet eth0: [ISR] = 0xb0070040: RX_ERR
> [   37.031524] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
> [   37.067831] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
> ............
>
> This patch add a configurable flag, FTGMAC100_RXDES0_RX_ERR_CHK, in FTGMAC100
>  driver, it is YES by default, so keep the orignal define of
> RXDES0_ANY_ERROR. If it is needed, user can set the flag to NO to remove
> the RXDES0_RX_ERR bit, to fix the issue.
>
> Hongwei Zhang (1):
>   net: ftgmac100: Fix AST2600 EVB NCSI RX issue
>
>  drivers/net/ethernet/faraday/Kconfig     | 9 +++++++++
>  drivers/net/ethernet/faraday/ftgmac100.h | 8 ++++++++
>  2 files changed, 17 insertions(+)
>
> --
> 2.17.1
>

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