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Signed-off-by: Colin Foster Reviewed-by: Vladimir Oltean --- v1 - v4: * No changes since previous RFC --- drivers/net/ethernet/mscc/ocelot_devlink.c | 31 ++++++++++++++++++++++ drivers/net/ethernet/mscc/ocelot_vsc7514.c | 28 ------------------- include/soc/mscc/ocelot.h | 5 ++++ 3 files changed, 36 insertions(+), 28 deletions(-) diff --git a/drivers/net/ethernet/mscc/ocelot_devlink.c b/drivers/net/ethernet/mscc/ocelot_devlink.c index b8737efd2a85..d9ea75a14f2f 100644 --- a/drivers/net/ethernet/mscc/ocelot_devlink.c +++ b/drivers/net/ethernet/mscc/ocelot_devlink.c @@ -487,6 +487,37 @@ static void ocelot_watermark_init(struct ocelot *ocelot) ocelot_setup_sharing_watermarks(ocelot); } +/* Watermark encode + * Bit 8: Unit; 0:1, 1:16 + * Bit 7-0: Value to be multiplied with unit + */ +u16 ocelot_wm_enc(u16 value) +{ + WARN_ON(value >= 16 * BIT(8)); + + if (value >= BIT(8)) + return BIT(8) | (value / 16); + + return value; +} +EXPORT_SYMBOL(ocelot_wm_enc); + +u16 ocelot_wm_dec(u16 wm) +{ + if (wm & BIT(8)) + return (wm & GENMASK(7, 0)) * 16; + + return wm; +} +EXPORT_SYMBOL(ocelot_wm_dec); + +void ocelot_wm_stat(u32 val, u32 *inuse, u32 *maxuse) +{ + *inuse = (val & GENMASK(23, 12)) >> 12; + *maxuse = val & GENMASK(11, 0); +} +EXPORT_SYMBOL(ocelot_wm_stat); + /* Pool size and type are fixed up at runtime. Keeping this structure to * look up the cell size multipliers. */ diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c index 6f22aea08a64..bac0ee9126f8 100644 --- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c +++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c @@ -234,34 +234,6 @@ static int ocelot_reset(struct ocelot *ocelot) return regmap_field_write(ocelot->regfields[SYS_RESET_CFG_CORE_ENA], 1); } -/* Watermark encode - * Bit 8: Unit; 0:1, 1:16 - * Bit 7-0: Value to be multiplied with unit - */ -static u16 ocelot_wm_enc(u16 value) -{ - WARN_ON(value >= 16 * BIT(8)); - - if (value >= BIT(8)) - return BIT(8) | (value / 16); - - return value; -} - -static u16 ocelot_wm_dec(u16 wm) -{ - if (wm & BIT(8)) - return (wm & GENMASK(7, 0)) * 16; - - return wm; -} - -static void ocelot_wm_stat(u32 val, u32 *inuse, u32 *maxuse) -{ - *inuse = (val & GENMASK(23, 12)) >> 12; - *maxuse = val & GENMASK(11, 0); -} - static const struct ocelot_ops ocelot_ops = { .reset = ocelot_reset, .wm_enc = ocelot_wm_enc, diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h index 967ba30ea636..55bbd5319128 100644 --- a/include/soc/mscc/ocelot.h +++ b/include/soc/mscc/ocelot.h @@ -1145,6 +1145,11 @@ void ocelot_port_assign_dsa_8021q_cpu(struct ocelot *ocelot, int port, int cpu); void ocelot_port_unassign_dsa_8021q_cpu(struct ocelot *ocelot, int port); u32 ocelot_port_assigned_dsa_8021q_cpu_mask(struct ocelot *ocelot, int port); +/* Watermark interface */ +u16 ocelot_wm_enc(u16 value); +u16 ocelot_wm_dec(u16 wm); +void ocelot_wm_stat(u32 val, u32 *inuse, u32 *maxuse); + /* DSA callbacks */ void ocelot_get_strings(struct ocelot *ocelot, int port, u32 sset, u8 *data); void ocelot_get_ethtool_stats(struct ocelot *ocelot, int port, u64 *data); -- 2.25.1