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/*
* drivers/net/ethernet/mellanox/mlxsw/spectrum2_acl_tcam.c
* Copyright (c) 2018 Mellanox Technologies. All rights reserved.
* Copyright (c) 2018 Jiri Pirko <jiri@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 "spectrum.h"
#include "spectrum_acl_tcam.h"
#include "core_acl_flex_actions.h"
struct mlxsw_sp2_acl_tcam {
u32 kvdl_index;
unsigned int kvdl_count;
};
struct mlxsw_sp2_acl_tcam_region {
struct mlxsw_sp_acl_ctcam_region cregion;
};
struct mlxsw_sp2_acl_tcam_chunk {
struct mlxsw_sp_acl_ctcam_chunk cchunk;
};
struct mlxsw_sp2_acl_tcam_entry {
struct mlxsw_sp_acl_ctcam_entry centry;
struct mlxsw_afa_block *act_block;
};
static int mlxsw_sp2_acl_tcam_init(struct mlxsw_sp *mlxsw_sp, void *priv,
struct mlxsw_sp_acl_tcam *_tcam)
{
struct mlxsw_sp2_acl_tcam *tcam = priv;
struct mlxsw_afa_block *afa_block;
char pefa_pl[MLXSW_REG_PEFA_LEN];
char pgcr_pl[MLXSW_REG_PGCR_LEN];
char *enc_actions;
int i;
int err;
tcam->kvdl_count = _tcam->max_regions;
err = mlxsw_sp_kvdl_alloc(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ACTSET,
tcam->kvdl_count, &tcam->kvdl_index);
if (err)
return err;
/* Create flex action block, set default action (continue)
* but don't commit. We need just the current set encoding
* to be written using PEFA register to all indexes for all regions.
*/
afa_block = mlxsw_afa_block_create(mlxsw_sp->afa);
if (!afa_block) {
err = -ENOMEM;
goto err_afa_block;
}
err = mlxsw_afa_block_continue(afa_block);
if (WARN_ON(err))
goto err_afa_block_continue;
enc_actions = mlxsw_afa_block_cur_set(afa_block);
for (i = 0; i < tcam->kvdl_count; i++) {
mlxsw_reg_pefa_pack(pefa_pl, tcam->kvdl_index + i,
true, enc_actions);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pefa), pefa_pl);
if (err)
goto err_pefa_write;
}
mlxsw_reg_pgcr_pack(pgcr_pl, tcam->kvdl_index);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pgcr), pgcr_pl);
if (err)
goto err_pgcr_write;
mlxsw_afa_block_destroy(afa_block);
return 0;
err_pgcr_write:
err_pefa_write:
err_afa_block_continue:
mlxsw_afa_block_destroy(afa_block);
err_afa_block:
mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ACTSET,
tcam->kvdl_count, tcam->kvdl_index);
return err;
}
static void mlxsw_sp2_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp, void *priv)
{
struct mlxsw_sp2_acl_tcam *tcam = priv;
mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ACTSET,
tcam->kvdl_count, tcam->kvdl_index);
}
static int
mlxsw_sp2_acl_tcam_region_init(struct mlxsw_sp *mlxsw_sp, void *region_priv,
struct mlxsw_sp_acl_tcam_region *_region)
{
struct mlxsw_sp2_acl_tcam_region *region = region_priv;
int err;
err = mlxsw_sp_acl_atcam_region_init(mlxsw_sp, _region);
if (err)
return err;
return mlxsw_sp_acl_ctcam_region_init(mlxsw_sp, ®ion->cregion,
_region);
}
static void
mlxsw_sp2_acl_tcam_region_fini(struct mlxsw_sp *mlxsw_sp, void *region_priv)
{
struct mlxsw_sp2_acl_tcam_region *region = region_priv;
mlxsw_sp_acl_ctcam_region_fini(®ion->cregion);
}
static int
mlxsw_sp2_acl_tcam_region_associate(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_tcam_region *region)
{
return mlxsw_sp_acl_atcam_region_associate(mlxsw_sp, region->id);
}
static void mlxsw_sp2_acl_tcam_chunk_init(void *region_priv, void *chunk_priv,
unsigned int priority)
{
struct mlxsw_sp2_acl_tcam_region *region = region_priv;
struct mlxsw_sp2_acl_tcam_chunk *chunk = chunk_priv;
mlxsw_sp_acl_ctcam_chunk_init(®ion->cregion, &chunk->cchunk,
priority);
}
static void mlxsw_sp2_acl_tcam_chunk_fini(void *chunk_priv)
{
struct mlxsw_sp2_acl_tcam_chunk *chunk = chunk_priv;
mlxsw_sp_acl_ctcam_chunk_fini(&chunk->cchunk);
}
static int mlxsw_sp2_acl_tcam_entry_add(struct mlxsw_sp *mlxsw_sp,
void *region_priv, void *chunk_priv,
void *entry_priv,
struct mlxsw_sp_acl_rule_info *rulei)
{
struct mlxsw_sp2_acl_tcam_region *region = region_priv;
struct mlxsw_sp2_acl_tcam_chunk *chunk = chunk_priv;
struct mlxsw_sp2_acl_tcam_entry *entry = entry_priv;
entry->act_block = rulei->act_block;
return mlxsw_sp_acl_ctcam_entry_add(mlxsw_sp, ®ion->cregion,
&chunk->cchunk, &entry->centry,
rulei, true);
}
static void mlxsw_sp2_acl_tcam_entry_del(struct mlxsw_sp *mlxsw_sp,
void *region_priv, void *chunk_priv,
void *entry_priv)
{
struct mlxsw_sp2_acl_tcam_region *region = region_priv;
struct mlxsw_sp2_acl_tcam_chunk *chunk = chunk_priv;
struct mlxsw_sp2_acl_tcam_entry *entry = entry_priv;
mlxsw_sp_acl_ctcam_entry_del(mlxsw_sp, ®ion->cregion,
&chunk->cchunk, &entry->centry);
}
static int
mlxsw_sp2_acl_tcam_entry_activity_get(struct mlxsw_sp *mlxsw_sp,
void *region_priv, void *entry_priv,
bool *activity)
{
struct mlxsw_sp2_acl_tcam_entry *entry = entry_priv;
return mlxsw_afa_block_activity_get(entry->act_block, activity);
}
const struct mlxsw_sp_acl_tcam_ops mlxsw_sp2_acl_tcam_ops = {
.key_type = MLXSW_REG_PTAR_KEY_TYPE_FLEX2,
.priv_size = sizeof(struct mlxsw_sp2_acl_tcam),
.init = mlxsw_sp2_acl_tcam_init,
.fini = mlxsw_sp2_acl_tcam_fini,
.region_priv_size = sizeof(struct mlxsw_sp2_acl_tcam_region),
.region_init = mlxsw_sp2_acl_tcam_region_init,
.region_fini = mlxsw_sp2_acl_tcam_region_fini,
.region_associate = mlxsw_sp2_acl_tcam_region_associate,
.chunk_priv_size = sizeof(struct mlxsw_sp2_acl_tcam_chunk),
.chunk_init = mlxsw_sp2_acl_tcam_chunk_init,
.chunk_fini = mlxsw_sp2_acl_tcam_chunk_fini,
.entry_priv_size = sizeof(struct mlxsw_sp2_acl_tcam_entry),
.entry_add = mlxsw_sp2_acl_tcam_entry_add,
.entry_del = mlxsw_sp2_acl_tcam_entry_del,
.entry_activity_get = mlxsw_sp2_acl_tcam_entry_activity_get,
};
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