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Message-ID: <20230528092522.47enrnrslgflovmx@kandell>
Date: Sun, 28 May 2023 11:25:22 +0200
From: Marek BehĂșn <marek.behun@....cz>
To: Michal Smulski <msmulski2@...il.com>
Cc: andrew@...n.ch, f.fainelli@...il.com, olteanv@...il.com,
netdev@...r.kernel.org, Michal Smulski <michal.smulski@...a.com>
Subject: Re: [PATCH net-next v2] net: dsa: mv88e6xxx: implement USXGMII mode
for mv88e6393x
You need also to implement serdes_pcs_get_state for USXGMII.
Preferably by adding USXGMII relevant register constants into
include/uapi/linux/mii.h, and using them to parse state register.
Marek
On Sat, May 27, 2023 at 10:20:24AM -0700, Michal Smulski wrote:
> Enable USXGMII mode for mv88e6393x chips. Tested on Marvell 88E6191X.
>
> Signed-off-by: Michal Smulski <michal.smulski@...a.com>
> ---
> drivers/net/dsa/mv88e6xxx/chip.c | 3 +--
> drivers/net/dsa/mv88e6xxx/port.c | 3 +++
> drivers/net/dsa/mv88e6xxx/serdes.c | 10 ++++++++--
> 3 files changed, 12 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
> index 5bbe95fa951c..71cee154622f 100644
> --- a/drivers/net/dsa/mv88e6xxx/chip.c
> +++ b/drivers/net/dsa/mv88e6xxx/chip.c
> @@ -806,8 +806,7 @@ static void mv88e6393x_phylink_get_caps(struct mv88e6xxx_chip *chip, int port,
> __set_bit(PHY_INTERFACE_MODE_2500BASEX, supported);
> __set_bit(PHY_INTERFACE_MODE_5GBASER, supported);
> __set_bit(PHY_INTERFACE_MODE_10GBASER, supported);
> - /* FIXME: USXGMII is not supported yet */
> - /* __set_bit(PHY_INTERFACE_MODE_USXGMII, supported); */
> + __set_bit(PHY_INTERFACE_MODE_USXGMII, supported);
>
> config->mac_capabilities |= MAC_2500FD | MAC_5000FD |
> MAC_10000FD;
> diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c
> index f79cf716c541..8daeeeb66880 100644
> --- a/drivers/net/dsa/mv88e6xxx/port.c
> +++ b/drivers/net/dsa/mv88e6xxx/port.c
> @@ -554,6 +554,9 @@ static int mv88e6xxx_port_set_cmode(struct mv88e6xxx_chip *chip, int port,
> case PHY_INTERFACE_MODE_10GBASER:
> cmode = MV88E6393X_PORT_STS_CMODE_10GBASER;
> break;
> + case PHY_INTERFACE_MODE_USXGMII:
> + cmode = MV88E6393X_PORT_STS_CMODE_USXGMII;
> + break;
> default:
> cmode = 0;
> }
> diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c
> index 72faec8f44dc..ae051d383c7e 100644
> --- a/drivers/net/dsa/mv88e6xxx/serdes.c
> +++ b/drivers/net/dsa/mv88e6xxx/serdes.c
> @@ -683,7 +683,8 @@ int mv88e6393x_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
> cmode == MV88E6XXX_PORT_STS_CMODE_SGMII ||
> cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
> cmode == MV88E6393X_PORT_STS_CMODE_5GBASER ||
> - cmode == MV88E6393X_PORT_STS_CMODE_10GBASER)
> + cmode == MV88E6393X_PORT_STS_CMODE_10GBASER ||
> + cmode == MV88E6393X_PORT_STS_CMODE_USXGMII)
> lane = port;
>
> return lane;
> @@ -1018,6 +1019,7 @@ int mv88e6393x_serdes_pcs_get_state(struct mv88e6xxx_chip *chip, int port,
> state);
> case PHY_INTERFACE_MODE_5GBASER:
> case PHY_INTERFACE_MODE_10GBASER:
> + case PHY_INTERFACE_MODE_USXGMII:
> return mv88e6393x_serdes_pcs_get_state_10g(chip, port, lane,
> state);
>
> @@ -1173,6 +1175,7 @@ int mv88e6393x_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port,
> return mv88e6390_serdes_irq_enable_sgmii(chip, lane, enable);
> case MV88E6393X_PORT_STS_CMODE_5GBASER:
> case MV88E6393X_PORT_STS_CMODE_10GBASER:
> + case MV88E6393X_PORT_STS_CMODE_USXGMII:
> return mv88e6393x_serdes_irq_enable_10g(chip, lane, enable);
> }
>
> @@ -1213,6 +1216,7 @@ irqreturn_t mv88e6393x_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
> break;
> case MV88E6393X_PORT_STS_CMODE_5GBASER:
> case MV88E6393X_PORT_STS_CMODE_10GBASER:
> + case MV88E6393X_PORT_STS_CMODE_USXGMII:
> err = mv88e6393x_serdes_irq_status_10g(chip, lane, &status);
> if (err)
> return err;
> @@ -1477,7 +1481,8 @@ static int mv88e6393x_serdes_erratum_5_2(struct mv88e6xxx_chip *chip, int lane,
> * to SERDES operating in 10G mode. These registers only apply to 10G
> * operation and have no effect on other speeds.
> */
> - if (cmode != MV88E6393X_PORT_STS_CMODE_10GBASER)
> + if (cmode != MV88E6393X_PORT_STS_CMODE_10GBASER &&
> + cmode != MV88E6393X_PORT_STS_CMODE_USXGMII)
> return 0;
>
> for (i = 0; i < ARRAY_SIZE(fixes); ++i) {
> @@ -1582,6 +1587,7 @@ int mv88e6393x_serdes_power(struct mv88e6xxx_chip *chip, int port, int lane,
> break;
> case MV88E6393X_PORT_STS_CMODE_5GBASER:
> case MV88E6393X_PORT_STS_CMODE_10GBASER:
> + case MV88E6393X_PORT_STS_CMODE_USXGMII:
> err = mv88e6390_serdes_power_10g(chip, lane, on);
> break;
> default:
> --
> 2.34.1
>
>
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