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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2016-2018 Mellanox Technologies. All rights reserved */
#include <linux/kernel.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include "spectrum.h"
struct mlxsw_sp_kvdl {
const struct mlxsw_sp_kvdl_ops *kvdl_ops;
struct mutex kvdl_lock; /* Protects kvdl allocations */
unsigned long priv[];
/* priv has to be always the last item */
};
int mlxsw_sp_kvdl_init(struct mlxsw_sp *mlxsw_sp)
{
const struct mlxsw_sp_kvdl_ops *kvdl_ops = mlxsw_sp->kvdl_ops;
struct mlxsw_sp_kvdl *kvdl;
int err;
kvdl = kzalloc(sizeof(*mlxsw_sp->kvdl) + kvdl_ops->priv_size,
GFP_KERNEL);
if (!kvdl)
return -ENOMEM;
mutex_init(&kvdl->kvdl_lock);
kvdl->kvdl_ops = kvdl_ops;
mlxsw_sp->kvdl = kvdl;
err = kvdl_ops->init(mlxsw_sp, kvdl->priv);
if (err)
goto err_init;
return 0;
err_init:
mutex_destroy(&kvdl->kvdl_lock);
kfree(kvdl);
return err;
}
void mlxsw_sp_kvdl_fini(struct mlxsw_sp *mlxsw_sp)
{
struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl;
kvdl->kvdl_ops->fini(mlxsw_sp, kvdl->priv);
mutex_destroy(&kvdl->kvdl_lock);
kfree(kvdl);
}
int mlxsw_sp_kvdl_alloc(struct mlxsw_sp *mlxsw_sp,
enum mlxsw_sp_kvdl_entry_type type,
unsigned int entry_count, u32 *p_entry_index)
{
struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl;
int err;
mutex_lock(&kvdl->kvdl_lock);
err = kvdl->kvdl_ops->alloc(mlxsw_sp, kvdl->priv, type,
entry_count, p_entry_index);
mutex_unlock(&kvdl->kvdl_lock);
return err;
}
void mlxsw_sp_kvdl_free(struct mlxsw_sp *mlxsw_sp,
enum mlxsw_sp_kvdl_entry_type type,
unsigned int entry_count, int entry_index)
{
struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl;
mutex_lock(&kvdl->kvdl_lock);
kvdl->kvdl_ops->free(mlxsw_sp, kvdl->priv, type,
entry_count, entry_index);
mutex_unlock(&kvdl->kvdl_lock);
}
int mlxsw_sp_kvdl_alloc_count_query(struct mlxsw_sp *mlxsw_sp,
enum mlxsw_sp_kvdl_entry_type type,
unsigned int entry_count,
unsigned int *p_alloc_count)
{
struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl;
return kvdl->kvdl_ops->alloc_size_query(mlxsw_sp, kvdl->priv, type,
entry_count, p_alloc_count);
}
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