/*
* drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_atcam.c
* Copyright (c) 2018 Mellanox Technologies. All rights reserved.
* Copyright (c) 2018 Jiri Pirko <jiri@mellanox.com>
* Copyright (c) 2018 Ido Schimmel <idosch@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include "reg.h"
#include "core.h"
#include "spectrum.h"
#include "spectrum_acl_tcam.h"
int mlxsw_sp_acl_atcam_region_associate(struct mlxsw_sp *mlxsw_sp,
u16 region_id)
{
char perar_pl[MLXSW_REG_PERAR_LEN];
/* For now, just assume that every region has 12 key blocks */
u16 hw_region = region_id * 3;
u64 max_regions;
max_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_REGIONS);
if (hw_region >= max_regions)
return -ENOBUFS;
mlxsw_reg_perar_pack(perar_pl, region_id, hw_region);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(perar), perar_pl);
}
static int mlxsw_sp_acl_atcam_region_param_init(struct mlxsw_sp *mlxsw_sp,
u16 region_id)
{
char percr_pl[MLXSW_REG_PERCR_LEN];
mlxsw_reg_percr_pack(percr_pl, region_id);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(percr), percr_pl);
}
static int
mlxsw_sp_acl_atcam_region_erp_init(struct mlxsw_sp *mlxsw_sp,
u16 region_id)
{
char pererp_pl[MLXSW_REG_PERERP_LEN];
mlxsw_reg_pererp_pack(pererp_pl, region_id, true, true, 0, 0, 0);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pererp), pererp_pl);
}
int mlxsw_sp_acl_atcam_region_init(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_tcam_region *region)
{
int err;
err = mlxsw_sp_acl_atcam_region_associate(mlxsw_sp, region->id);
if (err)
return err;
err = mlxsw_sp_acl_atcam_region_param_init(mlxsw_sp, region->id);
if (err)
return err;
err = mlxsw_sp_acl_atcam_region_erp_init(mlxsw_sp, region->id);
if (err)
return err;
return 0;
}
