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SubjectRe: [PATCH v5 3/3] net: dsa: mv88e6xxx: Add support for mv88e6393x family of Marvell
On Wed, Oct 28, 2020 at 10:09:50AM +1000, Pavana Sharma wrote:
> The Marvell 88E6393X device is a single-chip integration of a 11-port
> Ethernet switch with eight integrated Gigabit Ethernet (GbE) transceivers
> and three 10-Gigabit interfaces.
>
> This patch adds functionalities specific to mv88e6393x family (88E6393X,
> 88E6193X and 88E6191X)

Please break this patch up a bit into preparation patches, and the
last patch actually adding support for the new family.

e.g. serdes_get_lane() returning -ENODEV should be a patch of its
own. That should hopefully answer the question which

ommit 5122d4ec9e8053a5944bf77db6bd6c89143531d7
Author: Vivien Didelot <vivien.didelot@gmail.com>
Date: Sat Aug 31 16:18:30 2019 -0400

net: dsa: mv88e6xxx: simplify .serdes_get_lane

Because the mapping between a SERDES interface and its lane is static,
we don't need to stick with negative error codes actually and we can
simply return 0 if there is no lane, just like the IRQ mapping.

This way we can keep a simple and intuitive API using unsigned lane
numbers while simplifying the implementations with single return
statements

raises.

> +static const struct mv88e6xxx_ops mv88e6193x_ops = {
> + /* MV88E6XXX_FAMILY_6393 */
> + .setup_errata = mv88e6393x_setup_errata,
> + .irl_init_all = mv88e6390_g2_irl_init_all,
> + .get_eeprom = mv88e6xxx_g2_get_eeprom8,
> + .set_eeprom = mv88e6xxx_g2_set_eeprom8,
> + .set_switch_mac = mv88e6xxx_g2_set_switch_mac,
> + .phy_read = mv88e6xxx_g2_smi_phy_read,
> + .phy_write = mv88e6xxx_g2_smi_phy_write,
> + .port_set_link = mv88e6xxx_port_set_link,
> + .port_set_speed_duplex = mv88e6393x_port_set_speed_duplex,
> + .port_set_rgmii_delay = mv88e6390_port_set_rgmii_delay,
> + .port_tag_remap = mv88e6390_port_tag_remap,
> + .port_set_frame_mode = mv88e6351_port_set_frame_mode,
> + .port_set_egress_floods = mv88e6352_port_set_egress_floods,
> + .port_set_ether_type = mv88e6393x_port_set_ether_type,
> + .port_set_jumbo_size = mv88e6165_port_set_jumbo_size,
> + .port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
> + .port_pause_limit = mv88e6390_port_pause_limit,
> + .port_set_cmode = mv88e6393x_port_set_cmode,
> + .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
> + .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
> + .port_get_cmode = mv88e6352_port_get_cmode,
> + .stats_snapshot = mv88e6390_g1_stats_snapshot,
> + .stats_set_histogram = mv88e6390_g1_stats_set_histogram,
> + .stats_get_sset_count = mv88e6320_stats_get_sset_count,
> + .stats_get_strings = mv88e6320_stats_get_strings,
> + .stats_get_stats = mv88e6390_stats_get_stats,
> + .set_cpu_port = mv88e6393x_port_set_cpu_dest,
> + .set_egress_port = mv88e6393x_set_egress_port,
> + .watchdog_ops = &mv88e6390_watchdog_ops,
> + .mgmt_rsvd2cpu = mv88e6393x_port_mgmt_rsvd2cpu,
> + .pot_clear = mv88e6xxx_g2_pot_clear,
> + .reset = mv88e6352_g1_reset,
> + .rmu_disable = mv88e6390_g1_rmu_disable,
> + .vtu_getnext = mv88e6390_g1_vtu_getnext,
> + .vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
> + .serdes_power = mv88e6393x_serdes_power,
> + .serdes_get_lane = mv88e6393x_serdes_get_lane,
> + /* Check status register pause & lpa register */
> + .serdes_pcs_get_state = mv88e6390_serdes_pcs_get_state,
> + .serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
> + .serdes_irq_enable = mv88e6393x_serdes_irq_enable,
> + .serdes_irq_status = mv88e6393x_serdes_irq_status,
> + .gpio_ops = &mv88e6352_gpio_ops,
> + .avb_ops = &mv88e6390_avb_ops,
> + .ptp_ops = &mv88e6352_ptp_ops,
> + .phylink_validate = mv88e6393x_phylink_validate,
> +};

> diff --git a/drivers/net/dsa/mv88e6xxx/chip.h b/drivers/net/dsa/mv88e6xxx/chip.h
> index 823ae89e5fca..03c0466ab4ae 100644
> --- a/drivers/net/dsa/mv88e6xxx/chip.h
> +++ b/drivers/net/dsa/mv88e6xxx/chip.h
> @@ -63,6 +63,8 @@ enum mv88e6xxx_model {
> MV88E6190,
> MV88E6190X,
> MV88E6191,
> + MV88E6191X,

Is the 6191X part of the 6193 family? Not the 6390, like the 6191 is?
Or do we have the 6191 in the wrong family?

> + MV88E6193X,

You don't add any _ops structure for the 6193x. How is it different?
Can you make your best guess at the ops structure. Also, what about
the 6191X?

> MV88E6220,
> MV88E6240,
> MV88E6250,
> @@ -75,6 +77,7 @@ enum mv88e6xxx_model {
> MV88E6352,
> MV88E6390,
> MV88E6390X,
> + MV88E6393X,
> };
>
> enum mv88e6xxx_family {
> @@ -90,6 +93,7 @@ enum mv88e6xxx_family {
> MV88E6XXX_FAMILY_6351, /* 6171 6175 6350 6351 */
> MV88E6XXX_FAMILY_6352, /* 6172 6176 6240 6352 */
> MV88E6XXX_FAMILY_6390, /* 6190 6190X 6191 6290 6390 6390X */
> + MV88E6XXX_FAMILY_6393, /* 6191X 6193X 6393X */
> };

Andrew

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