netdev - Re: [PATCH RFC net-next 06/10] net: mvpp2: add EEE implementation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250115155354.0acdacc7@fedora.home>
Date: Wed, 15 Jan 2025 15:53:54 +0100
From: Maxime Chevallier <maxime.chevallier@...tlin.com>
To: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Cc: Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>, Andrew Lunn
 <andrew+netdev@...n.ch>, Bryan Whitehead <bryan.whitehead@...rochip.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 linux-arm-kernel@...ts.infradead.org,
 linux-stm32@...md-mailman.stormreply.com, Marcin Wojtas
 <marcin.s.wojtas@...il.com>, Maxime Coquelin <mcoquelin.stm32@...il.com>,
 netdev@...r.kernel.org, Paolo Abeni <pabeni@...hat.com>, Simon Horman
 <horms@...nel.org>, UNGLinuxDriver@...rochip.com, Vladimir Oltean
 <olteanv@...il.com>
Subject: Re: [PATCH RFC net-next 06/10] net: mvpp2: add EEE implementation

Hello Russell,

On Tue, 14 Jan 2025 14:02:29 +0000
"Russell King (Oracle)" <rmk+kernel@...linux.org.uk> wrote:

> Add EEE support for mvpp2, using phylink's EEE implementation, which
> means we just need to implement the two methods for LPI control, and
> with the initial configuration. Only SGMII mode is supported, so only
> 100M and 1G speeds.
> 
> Disabling LPI requires clearing a single bit. Enabling LPI needs a full
> configuration of several values, as the timer values are dependent on
> the MAC operating speed.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
> --
> v3: split LPI timer limit and validation into separate patches
> ---
>  drivers/net/ethernet/marvell/mvpp2/mvpp2.h    |  5 ++
>  .../net/ethernet/marvell/mvpp2/mvpp2_main.c   | 86 +++++++++++++++++++
>  2 files changed, 91 insertions(+)
> 
> diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
> index 9e02e4367bec..364d038da7ea 100644
> --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
> +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
> @@ -481,6 +481,11 @@
>  #define MVPP22_GMAC_INT_SUM_MASK		0xa4
>  #define     MVPP22_GMAC_INT_SUM_MASK_LINK_STAT	BIT(1)
>  #define	    MVPP22_GMAC_INT_SUM_MASK_PTP	BIT(2)
> +#define MVPP2_GMAC_LPI_CTRL0			0xc0
> +#define     MVPP2_GMAC_LPI_CTRL0_TS_MASK	GENMASK(8, 8)

I think this should be GENMASK(15, 8) :)

The rest looks good to me,

Thanks,

Maxime