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
mlxsw_sp_acl_ctcam_region_resize(struct mlxsw_sp * mlxsw_sp,struct mlxsw_sp_acl_tcam_region * region,u16 new_size)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
mlxsw_sp_acl_ctcam_region_move(struct mlxsw_sp * mlxsw_sp,struct mlxsw_sp_acl_tcam_region * region,u16 src_offset,u16 dst_offset,u16 size)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
mlxsw_sp_acl_ctcam_region_entry_insert(struct mlxsw_sp * mlxsw_sp,struct mlxsw_sp_acl_ctcam_region * cregion,struct mlxsw_sp_acl_ctcam_entry * centry,struct mlxsw_sp_acl_rule_info * rulei,bool fillup_priority)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 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl);
76 if (err)
77 goto err_ptce2_write;
78
79 return 0;
80
81 err_ptce2_write:
82 cregion->ops->entry_remove(cregion, centry);
83 return err;
84 }
85
86 static void
mlxsw_sp_acl_ctcam_region_entry_remove(struct mlxsw_sp * mlxsw_sp,struct mlxsw_sp_acl_ctcam_region * cregion,struct mlxsw_sp_acl_ctcam_entry * centry)87 mlxsw_sp_acl_ctcam_region_entry_remove(struct mlxsw_sp *mlxsw_sp,
88 struct mlxsw_sp_acl_ctcam_region *cregion,
89 struct mlxsw_sp_acl_ctcam_entry *centry)
90 {
91 char ptce2_pl[MLXSW_REG_PTCE2_LEN];
92
93 mlxsw_reg_ptce2_pack(ptce2_pl, false, MLXSW_REG_PTCE2_OP_WRITE_WRITE,
94 cregion->region->tcam_region_info,
95 centry->parman_item.index, 0);
96 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl);
97 cregion->ops->entry_remove(cregion, centry);
98 }
99
100 static int
mlxsw_sp_acl_ctcam_region_entry_action_replace(struct mlxsw_sp * mlxsw_sp,struct mlxsw_sp_acl_ctcam_region * cregion,struct mlxsw_sp_acl_ctcam_entry * centry,struct mlxsw_afa_block * afa_block,unsigned int priority)101 mlxsw_sp_acl_ctcam_region_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
102 struct mlxsw_sp_acl_ctcam_region *cregion,
103 struct mlxsw_sp_acl_ctcam_entry *centry,
104 struct mlxsw_afa_block *afa_block,
105 unsigned int priority)
106 {
107 char ptce2_pl[MLXSW_REG_PTCE2_LEN];
108 char *act_set;
109
110 mlxsw_reg_ptce2_pack(ptce2_pl, true, MLXSW_REG_PTCE2_OP_WRITE_UPDATE,
111 cregion->region->tcam_region_info,
112 centry->parman_item.index, priority);
113
114 act_set = mlxsw_afa_block_first_set(afa_block);
115 mlxsw_reg_ptce2_flex_action_set_memcpy_to(ptce2_pl, act_set);
116
117 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl);
118 }
119
120
mlxsw_sp_acl_ctcam_region_parman_resize(void * priv,unsigned long new_count)121 static int mlxsw_sp_acl_ctcam_region_parman_resize(void *priv,
122 unsigned long new_count)
123 {
124 struct mlxsw_sp_acl_ctcam_region *cregion = priv;
125 struct mlxsw_sp_acl_tcam_region *region = cregion->region;
126 struct mlxsw_sp *mlxsw_sp = region->mlxsw_sp;
127 u64 max_tcam_rules;
128
129 max_tcam_rules = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_TCAM_RULES);
130 if (new_count > max_tcam_rules)
131 return -EINVAL;
132 return mlxsw_sp_acl_ctcam_region_resize(mlxsw_sp, region, new_count);
133 }
134
mlxsw_sp_acl_ctcam_region_parman_move(void * priv,unsigned long from_index,unsigned long to_index,unsigned long count)135 static void mlxsw_sp_acl_ctcam_region_parman_move(void *priv,
136 unsigned long from_index,
137 unsigned long to_index,
138 unsigned long count)
139 {
140 struct mlxsw_sp_acl_ctcam_region *cregion = priv;
141 struct mlxsw_sp_acl_tcam_region *region = cregion->region;
142 struct mlxsw_sp *mlxsw_sp = region->mlxsw_sp;
143
144 mlxsw_sp_acl_ctcam_region_move(mlxsw_sp, region,
145 from_index, to_index, count);
146 }
147
148 static const struct parman_ops mlxsw_sp_acl_ctcam_region_parman_ops = {
149 .base_count = MLXSW_SP_ACL_TCAM_REGION_BASE_COUNT,
150 .resize_step = MLXSW_SP_ACL_TCAM_REGION_RESIZE_STEP,
151 .resize = mlxsw_sp_acl_ctcam_region_parman_resize,
152 .move = mlxsw_sp_acl_ctcam_region_parman_move,
153 .algo = PARMAN_ALGO_TYPE_LSORT,
154 };
155
156 int
mlxsw_sp_acl_ctcam_region_init(struct mlxsw_sp * mlxsw_sp,struct mlxsw_sp_acl_ctcam_region * cregion,struct mlxsw_sp_acl_tcam_region * region,const struct mlxsw_sp_acl_ctcam_region_ops * ops)157 mlxsw_sp_acl_ctcam_region_init(struct mlxsw_sp *mlxsw_sp,
158 struct mlxsw_sp_acl_ctcam_region *cregion,
159 struct mlxsw_sp_acl_tcam_region *region,
160 const struct mlxsw_sp_acl_ctcam_region_ops *ops)
161 {
162 cregion->region = region;
163 cregion->ops = ops;
164 cregion->parman = parman_create(&mlxsw_sp_acl_ctcam_region_parman_ops,
165 cregion);
166 if (!cregion->parman)
167 return -ENOMEM;
168 return 0;
169 }
170
mlxsw_sp_acl_ctcam_region_fini(struct mlxsw_sp_acl_ctcam_region * cregion)171 void mlxsw_sp_acl_ctcam_region_fini(struct mlxsw_sp_acl_ctcam_region *cregion)
172 {
173 parman_destroy(cregion->parman);
174 }
175
mlxsw_sp_acl_ctcam_chunk_init(struct mlxsw_sp_acl_ctcam_region * cregion,struct mlxsw_sp_acl_ctcam_chunk * cchunk,unsigned int priority)176 void mlxsw_sp_acl_ctcam_chunk_init(struct mlxsw_sp_acl_ctcam_region *cregion,
177 struct mlxsw_sp_acl_ctcam_chunk *cchunk,
178 unsigned int priority)
179 {
180 parman_prio_init(cregion->parman, &cchunk->parman_prio, priority);
181 }
182
mlxsw_sp_acl_ctcam_chunk_fini(struct mlxsw_sp_acl_ctcam_chunk * cchunk)183 void mlxsw_sp_acl_ctcam_chunk_fini(struct mlxsw_sp_acl_ctcam_chunk *cchunk)
184 {
185 parman_prio_fini(&cchunk->parman_prio);
186 }
187
mlxsw_sp_acl_ctcam_entry_add(struct mlxsw_sp * mlxsw_sp,struct mlxsw_sp_acl_ctcam_region * cregion,struct mlxsw_sp_acl_ctcam_chunk * cchunk,struct mlxsw_sp_acl_ctcam_entry * centry,struct mlxsw_sp_acl_rule_info * rulei,bool fillup_priority)188 int mlxsw_sp_acl_ctcam_entry_add(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 struct mlxsw_sp_acl_rule_info *rulei,
193 bool fillup_priority)
194 {
195 int err;
196
197 err = parman_item_add(cregion->parman, &cchunk->parman_prio,
198 ¢ry->parman_item);
199 if (err)
200 return err;
201
202 err = mlxsw_sp_acl_ctcam_region_entry_insert(mlxsw_sp, cregion, centry,
203 rulei, fillup_priority);
204 if (err)
205 goto err_rule_insert;
206 return 0;
207
208 err_rule_insert:
209 parman_item_remove(cregion->parman, &cchunk->parman_prio,
210 ¢ry->parman_item);
211 return err;
212 }
213
mlxsw_sp_acl_ctcam_entry_del(struct mlxsw_sp * mlxsw_sp,struct mlxsw_sp_acl_ctcam_region * cregion,struct mlxsw_sp_acl_ctcam_chunk * cchunk,struct mlxsw_sp_acl_ctcam_entry * centry)214 void mlxsw_sp_acl_ctcam_entry_del(struct mlxsw_sp *mlxsw_sp,
215 struct mlxsw_sp_acl_ctcam_region *cregion,
216 struct mlxsw_sp_acl_ctcam_chunk *cchunk,
217 struct mlxsw_sp_acl_ctcam_entry *centry)
218 {
219 mlxsw_sp_acl_ctcam_region_entry_remove(mlxsw_sp, cregion, centry);
220 parman_item_remove(cregion->parman, &cchunk->parman_prio,
221 ¢ry->parman_item);
222 }
223
mlxsw_sp_acl_ctcam_entry_action_replace(struct mlxsw_sp * mlxsw_sp,struct mlxsw_sp_acl_ctcam_region * cregion,struct mlxsw_sp_acl_ctcam_entry * centry,struct mlxsw_sp_acl_rule_info * rulei)224 int mlxsw_sp_acl_ctcam_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
225 struct mlxsw_sp_acl_ctcam_region *cregion,
226 struct mlxsw_sp_acl_ctcam_entry *centry,
227 struct mlxsw_sp_acl_rule_info *rulei)
228 {
229 return mlxsw_sp_acl_ctcam_region_entry_action_replace(mlxsw_sp, cregion,
230 centry,
231 rulei->act_block,
232 rulei->priority);
233 }
234