From 97b05cfb68aef12c649c5f8b6e787d143c9e5c8f Mon Sep 17 00:00:00 2001 From: Danielle Ratson Date: Sun, 24 Jul 2022 11:03:16 +0300 Subject: [PATCH] mlxsw: reg: Add MTUTC register's fields for supporting PTP in Spectrum-2 The MTUTC register configures the HW UTC counter. Add the relevant fields and operations to support PTP in Spectrum-2 and update mlxsw_reg_mtutc_pack() with the new fields for a future use. Signed-off-by: Danielle Ratson Signed-off-by: Amit Cohen Reviewed-by: Petr Machata Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/reg.h | 31 +++++++++++++++++-- .../ethernet/mellanox/mlxsw/spectrum_ptp.c | 4 +-- 2 files changed, 31 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h index 0ed2a805ce83..5665a60afc3f 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/reg.h +++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h @@ -10347,6 +10347,8 @@ MLXSW_REG_DEFINE(mtutc, MLXSW_REG_MTUTC_ID, MLXSW_REG_MTUTC_LEN); enum mlxsw_reg_mtutc_operation { MLXSW_REG_MTUTC_OPERATION_SET_TIME_AT_NEXT_SEC = 0, + MLXSW_REG_MTUTC_OPERATION_SET_TIME_IMMEDIATE = 1, + MLXSW_REG_MTUTC_OPERATION_ADJUST_TIME = 2, MLXSW_REG_MTUTC_OPERATION_ADJUST_FREQ = 3, }; @@ -10359,25 +10361,50 @@ MLXSW_ITEM32(reg, mtutc, operation, 0x00, 0, 4); /* reg_mtutc_freq_adjustment * Frequency adjustment: Every PPS the HW frequency will be * adjusted by this value. Units of HW clock, where HW counts - * 10^9 HW clocks for 1 HW second. + * 10^9 HW clocks for 1 HW second. Range is from -50,000,000 to +50,000,000. + * In Spectrum-2, the field is reversed, positive values mean to decrease the + * frequency. * Access: RW */ MLXSW_ITEM32(reg, mtutc, freq_adjustment, 0x04, 0, 32); +#define MLXSW_REG_MTUTC_MAX_FREQ_ADJ (50 * 1000 * 1000) + /* reg_mtutc_utc_sec * UTC seconds. * Access: WO */ MLXSW_ITEM32(reg, mtutc, utc_sec, 0x10, 0, 32); +/* reg_mtutc_utc_nsec + * UTC nSecs. + * Range 0..(10^9-1) + * Updated when operation is SET_TIME_IMMEDIATE. + * Reserved on Spectrum-1. + * Access: WO + */ +MLXSW_ITEM32(reg, mtutc, utc_nsec, 0x14, 0, 30); + +/* reg_mtutc_time_adjustment + * Time adjustment. + * Units of nSec. + * Range is from -32768 to +32767. + * Updated when operation is ADJUST_TIME. + * Reserved on Spectrum-1. + * Access: WO + */ +MLXSW_ITEM32(reg, mtutc, time_adjustment, 0x18, 0, 32); + static inline void mlxsw_reg_mtutc_pack(char *payload, enum mlxsw_reg_mtutc_operation oper, - u32 freq_adj, u32 utc_sec) + u32 freq_adj, u32 utc_sec, u32 utc_nsec, u32 time_adj) { MLXSW_REG_ZERO(mtutc, payload); mlxsw_reg_mtutc_operation_set(payload, oper); mlxsw_reg_mtutc_freq_adjustment_set(payload, freq_adj); mlxsw_reg_mtutc_utc_sec_set(payload, utc_sec); + mlxsw_reg_mtutc_utc_nsec_set(payload, utc_nsec); + mlxsw_reg_mtutc_time_adjustment_set(payload, time_adj); } /* MCQI - Management Component Query Information diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c index a976c7fbb04a..39586673b395 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c @@ -107,7 +107,7 @@ mlxsw_sp1_ptp_phc_adjfreq(struct mlxsw_sp_ptp_clock *clock, int freq_adj) char mtutc_pl[MLXSW_REG_MTUTC_LEN]; mlxsw_reg_mtutc_pack(mtutc_pl, MLXSW_REG_MTUTC_OPERATION_ADJUST_FREQ, - freq_adj, 0); + freq_adj, 0, 0, 0); return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mtutc), mtutc_pl); } @@ -144,7 +144,7 @@ mlxsw_sp1_ptp_phc_settime(struct mlxsw_sp_ptp_clock *clock, u64 nsec) mlxsw_reg_mtutc_pack(mtutc_pl, MLXSW_REG_MTUTC_OPERATION_SET_TIME_AT_NEXT_SEC, - 0, next_sec); + 0, next_sec, 0, 0); return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mtutc), mtutc_pl); } -- 2.49.0