// SPDX-License-Identifier: GPL-2.0+
/* Microchip Sparx5 Switch driver
 *
 * Copyright (c) 2023 Microchip Technology Inc. and its subsidiaries.
 */

#include "sparx5_main_regs.h"
#include "sparx5_main.h"

static int sparx5_policer_service_conf_set(struct sparx5 *sparx5,
        struct sparx5_policer *pol)
{
 u32 idx, pup_tokens, max_pup_tokens, burst, thres;
 const struct sparx5_ops *ops = sparx5->data->ops;
 struct sparx5_sdlb_group *g;
 u64 rate;

 g = ops->get_sdlb_group(pol->group);
 idx = pol->idx;

 rate = pol->rate * 1000;
 burst = pol->burst;

 pup_tokens = sparx5_sdlb_pup_token_get(sparx5, g->pup_interval, rate);
 max_pup_tokens =
  sparx5_sdlb_pup_token_get(sparx5, g->pup_interval, g->max_rate);

 thres = DIV_ROUND_UP(burst, g->min_burst);

 spx5_wr(ANA_AC_SDLB_PUP_TOKENS_PUP_TOKENS_SET(pup_tokens), sparx5,
  ANA_AC_SDLB_PUP_TOKENS(idx, 0));

 spx5_rmw(ANA_AC_SDLB_INH_CTRL_PUP_TOKENS_MAX_SET(max_pup_tokens),
   ANA_AC_SDLB_INH_CTRL_PUP_TOKENS_MAX, sparx5,
   ANA_AC_SDLB_INH_CTRL(idx, 0));

 spx5_rmw(ANA_AC_SDLB_THRES_THRES_SET(thres), ANA_AC_SDLB_THRES_THRES,
   sparx5, ANA_AC_SDLB_THRES(idx, 0));

 return 0;
}

int sparx5_policer_conf_set(struct sparx5 *sparx5, struct sparx5_policer *pol)
{
 /* More policer types will be added later */
 switch (pol->type) {
 case SPX5_POL_SERVICE:
  return sparx5_policer_service_conf_set(sparx5, pol);
 default:
  break;
 }

 return 0;
}