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