1 /* 2 * drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c 3 * Copyright (c) 2016-2018 Mellanox Technologies. All rights reserved. 4 * Copyright (c) 2016-2018 Jiri Pirko <jiri@mellanox.com> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the names of the copyright holders nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * Alternatively, this software may be distributed under the terms of the 19 * GNU General Public License ("GPL") version 2 as published by the Free 20 * Software Foundation. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <linux/kernel.h> 36 #include <linux/slab.h> 37 38 #include "spectrum.h" 39 40 struct mlxsw_sp_kvdl { 41 const struct mlxsw_sp_kvdl_ops *kvdl_ops; 42 unsigned long priv[0]; 43 /* priv has to be always the last item */ 44 }; 45 46 int mlxsw_sp_kvdl_init(struct mlxsw_sp *mlxsw_sp) 47 { 48 const struct mlxsw_sp_kvdl_ops *kvdl_ops = mlxsw_sp->kvdl_ops; 49 struct mlxsw_sp_kvdl *kvdl; 50 int err; 51 52 kvdl = kzalloc(sizeof(*mlxsw_sp->kvdl) + kvdl_ops->priv_size, 53 GFP_KERNEL); 54 if (!kvdl) 55 return -ENOMEM; 56 kvdl->kvdl_ops = kvdl_ops; 57 mlxsw_sp->kvdl = kvdl; 58 59 err = kvdl_ops->init(mlxsw_sp, kvdl->priv); 60 if (err) 61 goto err_init; 62 return 0; 63 64 err_init: 65 kfree(kvdl); 66 return err; 67 } 68 69 void mlxsw_sp_kvdl_fini(struct mlxsw_sp *mlxsw_sp) 70 { 71 struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl; 72 73 kvdl->kvdl_ops->fini(mlxsw_sp, kvdl->priv); 74 kfree(kvdl); 75 } 76 77 int mlxsw_sp_kvdl_alloc(struct mlxsw_sp *mlxsw_sp, 78 enum mlxsw_sp_kvdl_entry_type type, 79 unsigned int entry_count, u32 *p_entry_index) 80 { 81 struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl; 82 83 return kvdl->kvdl_ops->alloc(mlxsw_sp, kvdl->priv, type, 84 entry_count, p_entry_index); 85 } 86 87 void mlxsw_sp_kvdl_free(struct mlxsw_sp *mlxsw_sp, 88 enum mlxsw_sp_kvdl_entry_type type, 89 unsigned int entry_count, int entry_index) 90 { 91 struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl; 92 93 kvdl->kvdl_ops->free(mlxsw_sp, kvdl->priv, type, 94 entry_count, entry_index); 95 } 96 97 int mlxsw_sp_kvdl_alloc_count_query(struct mlxsw_sp *mlxsw_sp, 98 enum mlxsw_sp_kvdl_entry_type type, 99 unsigned int entry_count, 100 unsigned int *p_alloc_count) 101 { 102 struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl; 103 104 return kvdl->kvdl_ops->alloc_size_query(mlxsw_sp, kvdl->priv, type, 105 entry_count, p_alloc_count); 106 } 107