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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */
#include <linux/kernel.h>
#include <linux/parman.h>
#include "reg.h"
#include "spectrum.h"
#include "core_acl_flex_actions.h"
#include "spectrum_mr.h"
struct mlxsw_sp1_mr_tcam_region {
struct mlxsw_sp *mlxsw_sp;
enum mlxsw_reg_rtar_key_type rtar_key_type;
struct parman *parman;
struct parman_prio *parman_prios;
};
struct mlxsw_sp1_mr_tcam {
struct mlxsw_sp1_mr_tcam_region tcam_regions[MLXSW_SP_L3_PROTO_MAX];
};
struct mlxsw_sp1_mr_tcam_route {
struct parman_item parman_item;
struct parman_prio *parman_prio;
};
static int mlxsw_sp1_mr_tcam_route_replace(struct mlxsw_sp *mlxsw_sp,
struct parman_item *parman_item,
struct mlxsw_sp_mr_route_key *key,
struct mlxsw_afa_block *afa_block)
{
char rmft2_pl[MLXSW_REG_RMFT2_LEN];
switch (key->proto) {
case MLXSW_SP_L3_PROTO_IPV4:
mlxsw_reg_rmft2_ipv4_pack(rmft2_pl, true, parman_item->index,
key->vrid,
MLXSW_REG_RMFT2_IRIF_MASK_IGNORE, 0,
ntohl(key->group.addr4),
ntohl(key->group_mask.addr4),
ntohl(key->source.addr4),
ntohl(key->source_mask.addr4),
mlxsw_afa_block_first_set(afa_block));
break;
case MLXSW_SP_L3_PROTO_IPV6:
mlxsw_reg_rmft2_ipv6_pack(rmft2_pl, true, parman_item->index,
key->vrid,
MLXSW_REG_RMFT2_IRIF_MASK_IGNORE, 0,
key->group.addr6,
key->group_mask.addr6,
key->source.addr6,
key->source_mask.addr6,
mlxsw_afa_block_first_set(afa_block));
}
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rmft2), rmft2_pl);
}
static int mlxsw_sp1_mr_tcam_route_remove(struct mlxsw_sp *mlxsw_sp,
struct parman_item *parman_item,
struct mlxsw_sp_mr_route_key *key)
{
struct in6_addr zero_addr = IN6ADDR_ANY_INIT;
char rmft2_pl[MLXSW_REG_RMFT2_LEN];
switch (key->proto) {
case MLXSW_SP_L3_PROTO_IPV4:
mlxsw_reg_rmft2_ipv4_pack(rmft2_pl, false, parman_item->index,
key->vrid, 0, 0, 0, 0, 0, 0, NULL);
break;
case MLXSW_SP_L3_PROTO_IPV6:
mlxsw_reg_rmft2_ipv6_pack(rmft2_pl, false, parman_item->index,
key->vrid, 0, 0, zero_addr, zero_addr,
zero_addr, zero_addr, NULL);
break;
}
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rmft2), rmft2_pl);
}
static struct mlxsw_sp1_mr_tcam_region *
mlxsw_sp1_mr_tcam_protocol_region(struct mlxsw_sp1_mr_tcam *mr_tcam,
enum mlxsw_sp_l3proto proto)
{
return &mr_tcam->tcam_regions[proto];
}
static int
mlxsw_sp1_mr_tcam_route_parman_item_add(struct mlxsw_sp1_mr_tcam *mr_tcam,
struct mlxsw_sp1_mr_tcam_route *route,
struct mlxsw_sp_mr_route_key *key,
enum mlxsw_sp_mr_route_prio prio)
{
struct mlxsw_sp1_mr_tcam_region *tcam_region;
int err;
tcam_region = mlxsw_sp1_mr_tcam_protocol_region(mr_tcam, key->proto);
err = parman_item_add(tcam_region->parman,
&tcam_region->parman_prios[prio],
&route->parman_item);
if (err)
return err;
route->parman_prio = &tcam_region->parman_prios[prio];
return 0;
}
static void
mlxsw_sp1_mr_tcam_route_parman_item_remove(struct mlxsw_sp1_mr_tcam *mr_tcam,
struct mlxsw_sp1_mr_tcam_route *route,
struct mlxsw_sp_mr_route_key *key)
{
struct mlxsw_sp1_mr_tcam_region *tcam_region;
tcam_region = mlxsw_sp1_mr_tcam_protocol_region(mr_tcam, key->proto);
parman_item_remove(tcam_region->parman,
route->parman_prio, &route->parman_item);
}
static int
mlxsw_sp1_mr_tcam_route_create(struct mlxsw_sp *mlxsw_sp, void *priv,
void *route_priv,
struct mlxsw_sp_mr_route_key *key,
struct mlxsw_afa_block *afa_block,
enum mlxsw_sp_mr_route_prio prio)
{
struct mlxsw_sp1_mr_tcam_route *route = route_priv;
struct mlxsw_sp1_mr_tcam *mr_tcam = priv;
int err;
err = mlxsw_sp1_mr_tcam_route_parman_item_add(mr_tcam, route,
key, prio);
if (err)
return err;
err = mlxsw_sp1_mr_tcam_route_replace(mlxsw_sp, &route->parman_item,
key, afa_block);
if (err)
goto err_route_replace;
return 0;
err_route_replace:
mlxsw_sp1_mr_tcam_route_parman_item_remove(mr_tcam, route, key);
return err;
}
static void
mlxsw_sp1_mr_tcam_route_destroy(struct mlxsw_sp *mlxsw_sp, void *priv,
void *route_priv,
struct mlxsw_sp_mr_route_key *key)
{
struct mlxsw_sp1_mr_tcam_route *route = route_priv;
struct mlxsw_sp1_mr_tcam *mr_tcam = priv;
mlxsw_sp1_mr_tcam_route_remove(mlxsw_sp, &route->parman_item, key);
mlxsw_sp1_mr_tcam_route_parman_item_remove(mr_tcam, route, key);
}
static int
mlxsw_sp1_mr_tcam_route_update(struct mlxsw_sp *mlxsw_sp,
void *route_priv,
struct mlxsw_sp_mr_route_key *key,
struct mlxsw_afa_block *afa_block)
{
struct mlxsw_sp1_mr_tcam_route *route = route_priv;
return mlxsw_sp1_mr_tcam_route_replace(mlxsw_sp, &route->parman_item,
key, afa_block);
}
#define MLXSW_SP1_MR_TCAM_REGION_BASE_COUNT 16
#define MLXSW_SP1_MR_TCAM_REGION_RESIZE_STEP 16
static int
mlxsw_sp1_mr_tcam_region_alloc(struct mlxsw_sp1_mr_tcam_region *mr_tcam_region)
{
struct mlxsw_sp *mlxsw_sp = mr_tcam_region->mlxsw_sp;
char rtar_pl[MLXSW_REG_RTAR_LEN];
mlxsw_reg_rtar_pack(rtar_pl, MLXSW_REG_RTAR_OP_ALLOCATE,
mr_tcam_region->rtar_key_type,
MLXSW_SP1_MR_TCAM_REGION_BASE_COUNT);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rtar), rtar_pl);
}
static void
mlxsw_sp1_mr_tcam_region_free(struct mlxsw_sp1_mr_tcam_region *mr_tcam_region)
{
struct mlxsw_sp *mlxsw_sp = mr_tcam_region->mlxsw_sp;
char rtar_pl[MLXSW_REG_RTAR_LEN];
mlxsw_reg_rtar_pack(rtar_pl, MLXSW_REG_RTAR_OP_DEALLOCATE,
mr_tcam_region->rtar_key_type, 0);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rtar), rtar_pl);
}
static int mlxsw_sp1_mr_tcam_region_parman_resize(void *priv,
unsigned long new_count)
{
struct mlxsw_sp1_mr_tcam_region *mr_tcam_region = priv;
struct mlxsw_sp *mlxsw_sp = mr_tcam_region->mlxsw_sp;
char rtar_pl[MLXSW_REG_RTAR_LEN];
u64 max_tcam_rules;
max_tcam_rules = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_TCAM_RULES);
if (new_count > max_tcam_rules)
return -EINVAL;
mlxsw_reg_rtar_pack(rtar_pl, MLXSW_REG_RTAR_OP_RESIZE,
mr_tcam_region->rtar_key_type, new_count);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rtar), rtar_pl);
}
static void mlxsw_sp1_mr_tcam_region_parman_move(void *priv,
unsigned long from_index,
unsigned long to_index,
unsigned long count)
{
struct mlxsw_sp1_mr_tcam_region *mr_tcam_region = priv;
struct mlxsw_sp *mlxsw_sp = mr_tcam_region->mlxsw_sp;
char rrcr_pl[MLXSW_REG_RRCR_LEN];
mlxsw_reg_rrcr_pack(rrcr_pl, MLXSW_REG_RRCR_OP_MOVE,
from_index, count,
mr_tcam_region->rtar_key_type, to_index);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rrcr), rrcr_pl);
}
static const struct parman_ops mlxsw_sp1_mr_tcam_region_parman_ops = {
.base_count = MLXSW_SP1_MR_TCAM_REGION_BASE_COUNT,
.resize_step = MLXSW_SP1_MR_TCAM_REGION_RESIZE_STEP,
.resize = mlxsw_sp1_mr_tcam_region_parman_resize,
.move = mlxsw_sp1_mr_tcam_region_parman_move,
.algo = PARMAN_ALGO_TYPE_LSORT,
};
static int
mlxsw_sp1_mr_tcam_region_init(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp1_mr_tcam_region *mr_tcam_region,
enum mlxsw_reg_rtar_key_type rtar_key_type)
{
struct parman_prio *parman_prios;
struct parman *parman;
int err;
int i;
mr_tcam_region->rtar_key_type = rtar_key_type;
mr_tcam_region->mlxsw_sp = mlxsw_sp;
err = mlxsw_sp1_mr_tcam_region_alloc(mr_tcam_region);
if (err)
return err;
parman = parman_create(&mlxsw_sp1_mr_tcam_region_parman_ops,
mr_tcam_region);
if (!parman) {
err = -ENOMEM;
goto err_parman_create;
}
mr_tcam_region->parman = parman;
parman_prios = kmalloc_array(MLXSW_SP_MR_ROUTE_PRIO_MAX + 1,
sizeof(*parman_prios), GFP_KERNEL);
if (!parman_prios) {
err = -ENOMEM;
goto err_parman_prios_alloc;
}
mr_tcam_region->parman_prios = parman_prios;
for (i = 0; i < MLXSW_SP_MR_ROUTE_PRIO_MAX + 1; i++)
parman_prio_init(mr_tcam_region->parman,
&mr_tcam_region->parman_prios[i], i);
return 0;
err_parman_prios_alloc:
parman_destroy(parman);
err_parman_create:
mlxsw_sp1_mr_tcam_region_free(mr_tcam_region);
return err;
}
static void
mlxsw_sp1_mr_tcam_region_fini(struct mlxsw_sp1_mr_tcam_region *mr_tcam_region)
{
int i;
for (i = 0; i < MLXSW_SP_MR_ROUTE_PRIO_MAX + 1; i++)
parman_prio_fini(&mr_tcam_region->parman_prios[i]);
kfree(mr_tcam_region->parman_prios);
parman_destroy(mr_tcam_region->parman);
mlxsw_sp1_mr_tcam_region_free(mr_tcam_region);
}
static int mlxsw_sp1_mr_tcam_init(struct mlxsw_sp *mlxsw_sp, void *priv)
{
struct mlxsw_sp1_mr_tcam *mr_tcam = priv;
struct mlxsw_sp1_mr_tcam_region *region = &mr_tcam->tcam_regions[0];
u32 rtar_key;
int err;
if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, ACL_MAX_TCAM_RULES))
return -EIO;
rtar_key = MLXSW_REG_RTAR_KEY_TYPE_IPV4_MULTICAST;
err = mlxsw_sp1_mr_tcam_region_init(mlxsw_sp,
®ion[MLXSW_SP_L3_PROTO_IPV4],
rtar_key);
if (err)
return err;
rtar_key = MLXSW_REG_RTAR_KEY_TYPE_IPV6_MULTICAST;
err = mlxsw_sp1_mr_tcam_region_init(mlxsw_sp,
®ion[MLXSW_SP_L3_PROTO_IPV6],
rtar_key);
if (err)
goto err_ipv6_region_init;
return 0;
err_ipv6_region_init:
mlxsw_sp1_mr_tcam_region_fini(®ion[MLXSW_SP_L3_PROTO_IPV4]);
return err;
}
static void mlxsw_sp1_mr_tcam_fini(void *priv)
{
struct mlxsw_sp1_mr_tcam *mr_tcam = priv;
struct mlxsw_sp1_mr_tcam_region *region = &mr_tcam->tcam_regions[0];
mlxsw_sp1_mr_tcam_region_fini(®ion[MLXSW_SP_L3_PROTO_IPV6]);
mlxsw_sp1_mr_tcam_region_fini(®ion[MLXSW_SP_L3_PROTO_IPV4]);
}
const struct mlxsw_sp_mr_tcam_ops mlxsw_sp1_mr_tcam_ops = {
.priv_size = sizeof(struct mlxsw_sp1_mr_tcam),
.init = mlxsw_sp1_mr_tcam_init,
.fini = mlxsw_sp1_mr_tcam_fini,
.route_priv_size = sizeof(struct mlxsw_sp1_mr_tcam_route),
.route_create = mlxsw_sp1_mr_tcam_route_create,
.route_destroy = mlxsw_sp1_mr_tcam_route_destroy,
.route_update = mlxsw_sp1_mr_tcam_route_update,
};
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