1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 2 /* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */ 3 4 #include <linux/kernel.h> 5 #include <linux/errno.h> 6 #include <linux/parman.h> 7 8 #include "reg.h" 9 #include "core.h" 10 #include "spectrum.h" 11 #include "spectrum_acl_tcam.h" 12 13 static int 14 mlxsw_sp_acl_ctcam_region_resize(struct mlxsw_sp *mlxsw_sp, 15 struct mlxsw_sp_acl_tcam_region *region, 16 u16 new_size) 17 { 18 char ptar_pl[MLXSW_REG_PTAR_LEN]; 19 20 mlxsw_reg_ptar_pack(ptar_pl, MLXSW_REG_PTAR_OP_RESIZE, 21 region->key_type, new_size, region->id, 22 region->tcam_region_info); 23 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptar), ptar_pl); 24 } 25 26 static void 27 mlxsw_sp_acl_ctcam_region_move(struct mlxsw_sp *mlxsw_sp, 28 struct mlxsw_sp_acl_tcam_region *region, 29 u16 src_offset, u16 dst_offset, u16 size) 30 { 31 char prcr_pl[MLXSW_REG_PRCR_LEN]; 32 33 mlxsw_reg_prcr_pack(prcr_pl, MLXSW_REG_PRCR_OP_MOVE, 34 region->tcam_region_info, src_offset, 35 region->tcam_region_info, dst_offset, size); 36 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(prcr), prcr_pl); 37 } 38 39 static int 40 mlxsw_sp_acl_ctcam_region_entry_insert(struct mlxsw_sp *mlxsw_sp, 41 struct mlxsw_sp_acl_ctcam_region *cregion, 42 struct mlxsw_sp_acl_ctcam_entry *centry, 43 struct mlxsw_sp_acl_rule_info *rulei, 44 bool fillup_priority) 45 { 46 struct mlxsw_sp_acl_tcam_region *region = cregion->region; 47 struct mlxsw_afk *afk = mlxsw_sp_acl_afk(mlxsw_sp->acl); 48 char ptce2_pl[MLXSW_REG_PTCE2_LEN]; 49 unsigned int blocks_count; 50 char *act_set; 51 u32 priority; 52 char *mask; 53 char *key; 54 int err; 55 56 err = mlxsw_sp_acl_tcam_priority_get(mlxsw_sp, rulei, &priority, 57 fillup_priority); 58 if (err) 59 return err; 60 61 mlxsw_reg_ptce2_pack(ptce2_pl, true, MLXSW_REG_PTCE2_OP_WRITE_WRITE, 62 region->tcam_region_info, 63 centry->parman_item.index, priority); 64 key = mlxsw_reg_ptce2_flex_key_blocks_data(ptce2_pl); 65 mask = mlxsw_reg_ptce2_mask_data(ptce2_pl); 66 blocks_count = mlxsw_afk_key_info_blocks_count_get(region->key_info); 67 mlxsw_afk_encode(afk, region->key_info, &rulei->values, key, mask, 0, 68 blocks_count - 1); 69 70 err = cregion->ops->entry_insert(cregion, centry, mask); 71 if (err) 72 return err; 73 74 /* Only the first action set belongs here, the rest is in KVD */ 75 act_set = mlxsw_afa_block_first_set(rulei->act_block); 76 mlxsw_reg_ptce2_flex_action_set_memcpy_to(ptce2_pl, act_set); 77 78 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl); 79 } 80 81 static void 82 mlxsw_sp_acl_ctcam_region_entry_remove(struct mlxsw_sp *mlxsw_sp, 83 struct mlxsw_sp_acl_ctcam_region *cregion, 84 struct mlxsw_sp_acl_ctcam_entry *centry) 85 { 86 char ptce2_pl[MLXSW_REG_PTCE2_LEN]; 87 88 mlxsw_reg_ptce2_pack(ptce2_pl, false, MLXSW_REG_PTCE2_OP_WRITE_WRITE, 89 cregion->region->tcam_region_info, 90 centry->parman_item.index, 0); 91 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl); 92 cregion->ops->entry_remove(cregion, centry); 93 } 94 95 static int mlxsw_sp_acl_ctcam_region_parman_resize(void *priv, 96 unsigned long new_count) 97 { 98 struct mlxsw_sp_acl_ctcam_region *cregion = priv; 99 struct mlxsw_sp_acl_tcam_region *region = cregion->region; 100 struct mlxsw_sp *mlxsw_sp = region->mlxsw_sp; 101 u64 max_tcam_rules; 102 103 max_tcam_rules = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_TCAM_RULES); 104 if (new_count > max_tcam_rules) 105 return -EINVAL; 106 return mlxsw_sp_acl_ctcam_region_resize(mlxsw_sp, region, new_count); 107 } 108 109 static void mlxsw_sp_acl_ctcam_region_parman_move(void *priv, 110 unsigned long from_index, 111 unsigned long to_index, 112 unsigned long count) 113 { 114 struct mlxsw_sp_acl_ctcam_region *cregion = priv; 115 struct mlxsw_sp_acl_tcam_region *region = cregion->region; 116 struct mlxsw_sp *mlxsw_sp = region->mlxsw_sp; 117 118 mlxsw_sp_acl_ctcam_region_move(mlxsw_sp, region, 119 from_index, to_index, count); 120 } 121 122 static const struct parman_ops mlxsw_sp_acl_ctcam_region_parman_ops = { 123 .base_count = MLXSW_SP_ACL_TCAM_REGION_BASE_COUNT, 124 .resize_step = MLXSW_SP_ACL_TCAM_REGION_RESIZE_STEP, 125 .resize = mlxsw_sp_acl_ctcam_region_parman_resize, 126 .move = mlxsw_sp_acl_ctcam_region_parman_move, 127 .algo = PARMAN_ALGO_TYPE_LSORT, 128 }; 129 130 int 131 mlxsw_sp_acl_ctcam_region_init(struct mlxsw_sp *mlxsw_sp, 132 struct mlxsw_sp_acl_ctcam_region *cregion, 133 struct mlxsw_sp_acl_tcam_region *region, 134 const struct mlxsw_sp_acl_ctcam_region_ops *ops) 135 { 136 cregion->region = region; 137 cregion->ops = ops; 138 cregion->parman = parman_create(&mlxsw_sp_acl_ctcam_region_parman_ops, 139 cregion); 140 if (!cregion->parman) 141 return -ENOMEM; 142 return 0; 143 } 144 145 void mlxsw_sp_acl_ctcam_region_fini(struct mlxsw_sp_acl_ctcam_region *cregion) 146 { 147 parman_destroy(cregion->parman); 148 } 149 150 void mlxsw_sp_acl_ctcam_chunk_init(struct mlxsw_sp_acl_ctcam_region *cregion, 151 struct mlxsw_sp_acl_ctcam_chunk *cchunk, 152 unsigned int priority) 153 { 154 parman_prio_init(cregion->parman, &cchunk->parman_prio, priority); 155 } 156 157 void mlxsw_sp_acl_ctcam_chunk_fini(struct mlxsw_sp_acl_ctcam_chunk *cchunk) 158 { 159 parman_prio_fini(&cchunk->parman_prio); 160 } 161 162 int mlxsw_sp_acl_ctcam_entry_add(struct mlxsw_sp *mlxsw_sp, 163 struct mlxsw_sp_acl_ctcam_region *cregion, 164 struct mlxsw_sp_acl_ctcam_chunk *cchunk, 165 struct mlxsw_sp_acl_ctcam_entry *centry, 166 struct mlxsw_sp_acl_rule_info *rulei, 167 bool fillup_priority) 168 { 169 int err; 170 171 err = parman_item_add(cregion->parman, &cchunk->parman_prio, 172 ¢ry->parman_item); 173 if (err) 174 return err; 175 176 err = mlxsw_sp_acl_ctcam_region_entry_insert(mlxsw_sp, cregion, centry, 177 rulei, fillup_priority); 178 if (err) 179 goto err_rule_insert; 180 return 0; 181 182 err_rule_insert: 183 parman_item_remove(cregion->parman, &cchunk->parman_prio, 184 ¢ry->parman_item); 185 return err; 186 } 187 188 void mlxsw_sp_acl_ctcam_entry_del(struct mlxsw_sp *mlxsw_sp, 189 struct mlxsw_sp_acl_ctcam_region *cregion, 190 struct mlxsw_sp_acl_ctcam_chunk *cchunk, 191 struct mlxsw_sp_acl_ctcam_entry *centry) 192 { 193 mlxsw_sp_acl_ctcam_region_entry_remove(mlxsw_sp, cregion, centry); 194 parman_item_remove(cregion->parman, &cchunk->parman_prio, 195 ¢ry->parman_item); 196 } 197