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 char *act_set; 50 u32 priority; 51 char *mask; 52 char *key; 53 int err; 54 55 err = mlxsw_sp_acl_tcam_priority_get(mlxsw_sp, rulei, &priority, 56 fillup_priority); 57 if (err) 58 return err; 59 60 mlxsw_reg_ptce2_pack(ptce2_pl, true, MLXSW_REG_PTCE2_OP_WRITE_WRITE, 61 region->tcam_region_info, 62 centry->parman_item.index, priority); 63 key = mlxsw_reg_ptce2_flex_key_blocks_data(ptce2_pl); 64 mask = mlxsw_reg_ptce2_mask_data(ptce2_pl); 65 mlxsw_afk_encode(afk, region->key_info, &rulei->values, key, mask); 66 67 err = cregion->ops->entry_insert(cregion, centry, mask); 68 if (err) 69 return err; 70 71 /* Only the first action set belongs here, the rest is in KVD */ 72 act_set = mlxsw_afa_block_first_set(rulei->act_block); 73 mlxsw_reg_ptce2_flex_action_set_memcpy_to(ptce2_pl, act_set); 74 75 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl); 76 } 77 78 static void 79 mlxsw_sp_acl_ctcam_region_entry_remove(struct mlxsw_sp *mlxsw_sp, 80 struct mlxsw_sp_acl_ctcam_region *cregion, 81 struct mlxsw_sp_acl_ctcam_entry *centry) 82 { 83 char ptce2_pl[MLXSW_REG_PTCE2_LEN]; 84 85 mlxsw_reg_ptce2_pack(ptce2_pl, false, MLXSW_REG_PTCE2_OP_WRITE_WRITE, 86 cregion->region->tcam_region_info, 87 centry->parman_item.index, 0); 88 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl); 89 cregion->ops->entry_remove(cregion, centry); 90 } 91 92 static int mlxsw_sp_acl_ctcam_region_parman_resize(void *priv, 93 unsigned long new_count) 94 { 95 struct mlxsw_sp_acl_ctcam_region *cregion = priv; 96 struct mlxsw_sp_acl_tcam_region *region = cregion->region; 97 struct mlxsw_sp *mlxsw_sp = region->mlxsw_sp; 98 u64 max_tcam_rules; 99 100 max_tcam_rules = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_TCAM_RULES); 101 if (new_count > max_tcam_rules) 102 return -EINVAL; 103 return mlxsw_sp_acl_ctcam_region_resize(mlxsw_sp, region, new_count); 104 } 105 106 static void mlxsw_sp_acl_ctcam_region_parman_move(void *priv, 107 unsigned long from_index, 108 unsigned long to_index, 109 unsigned long count) 110 { 111 struct mlxsw_sp_acl_ctcam_region *cregion = priv; 112 struct mlxsw_sp_acl_tcam_region *region = cregion->region; 113 struct mlxsw_sp *mlxsw_sp = region->mlxsw_sp; 114 115 mlxsw_sp_acl_ctcam_region_move(mlxsw_sp, region, 116 from_index, to_index, count); 117 } 118 119 static const struct parman_ops mlxsw_sp_acl_ctcam_region_parman_ops = { 120 .base_count = MLXSW_SP_ACL_TCAM_REGION_BASE_COUNT, 121 .resize_step = MLXSW_SP_ACL_TCAM_REGION_RESIZE_STEP, 122 .resize = mlxsw_sp_acl_ctcam_region_parman_resize, 123 .move = mlxsw_sp_acl_ctcam_region_parman_move, 124 .algo = PARMAN_ALGO_TYPE_LSORT, 125 }; 126 127 int 128 mlxsw_sp_acl_ctcam_region_init(struct mlxsw_sp *mlxsw_sp, 129 struct mlxsw_sp_acl_ctcam_region *cregion, 130 struct mlxsw_sp_acl_tcam_region *region, 131 const struct mlxsw_sp_acl_ctcam_region_ops *ops) 132 { 133 cregion->region = region; 134 cregion->ops = ops; 135 cregion->parman = parman_create(&mlxsw_sp_acl_ctcam_region_parman_ops, 136 cregion); 137 if (!cregion->parman) 138 return -ENOMEM; 139 return 0; 140 } 141 142 void mlxsw_sp_acl_ctcam_region_fini(struct mlxsw_sp_acl_ctcam_region *cregion) 143 { 144 parman_destroy(cregion->parman); 145 } 146 147 void mlxsw_sp_acl_ctcam_chunk_init(struct mlxsw_sp_acl_ctcam_region *cregion, 148 struct mlxsw_sp_acl_ctcam_chunk *cchunk, 149 unsigned int priority) 150 { 151 parman_prio_init(cregion->parman, &cchunk->parman_prio, priority); 152 } 153 154 void mlxsw_sp_acl_ctcam_chunk_fini(struct mlxsw_sp_acl_ctcam_chunk *cchunk) 155 { 156 parman_prio_fini(&cchunk->parman_prio); 157 } 158 159 int mlxsw_sp_acl_ctcam_entry_add(struct mlxsw_sp *mlxsw_sp, 160 struct mlxsw_sp_acl_ctcam_region *cregion, 161 struct mlxsw_sp_acl_ctcam_chunk *cchunk, 162 struct mlxsw_sp_acl_ctcam_entry *centry, 163 struct mlxsw_sp_acl_rule_info *rulei, 164 bool fillup_priority) 165 { 166 int err; 167 168 err = parman_item_add(cregion->parman, &cchunk->parman_prio, 169 ¢ry->parman_item); 170 if (err) 171 return err; 172 173 err = mlxsw_sp_acl_ctcam_region_entry_insert(mlxsw_sp, cregion, centry, 174 rulei, fillup_priority); 175 if (err) 176 goto err_rule_insert; 177 return 0; 178 179 err_rule_insert: 180 parman_item_remove(cregion->parman, &cchunk->parman_prio, 181 ¢ry->parman_item); 182 return err; 183 } 184 185 void mlxsw_sp_acl_ctcam_entry_del(struct mlxsw_sp *mlxsw_sp, 186 struct mlxsw_sp_acl_ctcam_region *cregion, 187 struct mlxsw_sp_acl_ctcam_chunk *cchunk, 188 struct mlxsw_sp_acl_ctcam_entry *centry) 189 { 190 mlxsw_sp_acl_ctcam_region_entry_remove(mlxsw_sp, cregion, centry); 191 parman_item_remove(cregion->parman, &cchunk->parman_prio, 192 ¢ry->parman_item); 193 } 194