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/slab.h>
6
7#include "reg.h"
8#include "core.h"
9#include "spectrum.h"
10#include "spectrum_acl_tcam.h"
11
12struct mlxsw_sp1_acl_tcam_region {
13 struct mlxsw_sp_acl_ctcam_region cregion;
14 struct mlxsw_sp_acl_tcam_region *region;
15 struct {
16 struct mlxsw_sp_acl_ctcam_chunk cchunk;
17 struct mlxsw_sp_acl_ctcam_entry centry;
18 struct mlxsw_sp_acl_rule_info *rulei;
19 } catchall;
20};
21
22struct mlxsw_sp1_acl_tcam_chunk {
23 struct mlxsw_sp_acl_ctcam_chunk cchunk;
24};
25
26struct mlxsw_sp1_acl_tcam_entry {
27 struct mlxsw_sp_acl_ctcam_entry centry;
28};
29
30static int
31mlxsw_sp1_acl_ctcam_region_entry_insert(struct mlxsw_sp_acl_ctcam_region *cregion,
32 struct mlxsw_sp_acl_ctcam_entry *centry,
33 const char *mask)
34{
35 return 0;
36}
37
38static void
39mlxsw_sp1_acl_ctcam_region_entry_remove(struct mlxsw_sp_acl_ctcam_region *cregion,
40 struct mlxsw_sp_acl_ctcam_entry *centry)
41{
42}
43
44static const struct mlxsw_sp_acl_ctcam_region_ops
45mlxsw_sp1_acl_ctcam_region_ops = {
46 .entry_insert = mlxsw_sp1_acl_ctcam_region_entry_insert,
47 .entry_remove = mlxsw_sp1_acl_ctcam_region_entry_remove,
48};
49
50static int mlxsw_sp1_acl_tcam_init(struct mlxsw_sp *mlxsw_sp, void *priv,
51 struct mlxsw_sp_acl_tcam *tcam)
52{
53 return 0;
54}
55
56static void mlxsw_sp1_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp, void *priv)
57{
58}
59
60static int
61mlxsw_sp1_acl_ctcam_region_catchall_add(struct mlxsw_sp *mlxsw_sp,
62 struct mlxsw_sp1_acl_tcam_region *region)
63{
64 struct mlxsw_sp_acl_rule_info *rulei;
65 int err;
66
67 mlxsw_sp_acl_ctcam_chunk_init(&region->cregion,
68 &region->catchall.cchunk,
69 MLXSW_SP_ACL_TCAM_CATCHALL_PRIO);
70 rulei = mlxsw_sp_acl_rulei_create(mlxsw_sp->acl, NULL);
71 if (IS_ERR(rulei)) {
72 err = PTR_ERR(rulei);
73 goto err_rulei_create;
74 }
75 err = mlxsw_sp_acl_rulei_act_continue(rulei);
76 if (WARN_ON(err))
77 goto err_rulei_act_continue;
78 err = mlxsw_sp_acl_rulei_commit(rulei);
79 if (err)
80 goto err_rulei_commit;
81 err = mlxsw_sp_acl_ctcam_entry_add(mlxsw_sp, &region->cregion,
82 &region->catchall.cchunk,
83 &region->catchall.centry,
84 rulei, false);
85 if (err)
86 goto err_entry_add;
87 region->catchall.rulei = rulei;
88 return 0;
89
90err_entry_add:
91err_rulei_commit:
92err_rulei_act_continue:
93 mlxsw_sp_acl_rulei_destroy(rulei);
94err_rulei_create:
95 mlxsw_sp_acl_ctcam_chunk_fini(&region->catchall.cchunk);
96 return err;
97}
98
99static void
100mlxsw_sp1_acl_ctcam_region_catchall_del(struct mlxsw_sp *mlxsw_sp,
101 struct mlxsw_sp1_acl_tcam_region *region)
102{
103 struct mlxsw_sp_acl_rule_info *rulei = region->catchall.rulei;
104
105 mlxsw_sp_acl_ctcam_entry_del(mlxsw_sp, &region->cregion,
106 &region->catchall.cchunk,
107 &region->catchall.centry);
108 mlxsw_sp_acl_rulei_destroy(rulei);
109 mlxsw_sp_acl_ctcam_chunk_fini(&region->catchall.cchunk);
110}
111
112static int
113mlxsw_sp1_acl_tcam_region_init(struct mlxsw_sp *mlxsw_sp, void *region_priv,
114 void *tcam_priv,
115 struct mlxsw_sp_acl_tcam_region *_region,
116 void *hints_priv)
117{
118 struct mlxsw_sp1_acl_tcam_region *region = region_priv;
119 int err;
120
121 err = mlxsw_sp_acl_ctcam_region_init(mlxsw_sp, &region->cregion,
122 _region,
123 &mlxsw_sp1_acl_ctcam_region_ops);
124 if (err)
125 return err;
126 err = mlxsw_sp1_acl_ctcam_region_catchall_add(mlxsw_sp, region);
127 if (err)
128 goto err_catchall_add;
129 region->region = _region;
130 return 0;
131
132err_catchall_add:
133 mlxsw_sp_acl_ctcam_region_fini(&region->cregion);
134 return err;
135}
136
137static void
138mlxsw_sp1_acl_tcam_region_fini(struct mlxsw_sp *mlxsw_sp, void *region_priv)
139{
140 struct mlxsw_sp1_acl_tcam_region *region = region_priv;
141
142 mlxsw_sp1_acl_ctcam_region_catchall_del(mlxsw_sp, region);
143 mlxsw_sp_acl_ctcam_region_fini(&region->cregion);
144}
145
146static int
147mlxsw_sp1_acl_tcam_region_associate(struct mlxsw_sp *mlxsw_sp,
148 struct mlxsw_sp_acl_tcam_region *region)
149{
150 return 0;
151}
152
153static void mlxsw_sp1_acl_tcam_chunk_init(void *region_priv, void *chunk_priv,
154 unsigned int priority)
155{
156 struct mlxsw_sp1_acl_tcam_region *region = region_priv;
157 struct mlxsw_sp1_acl_tcam_chunk *chunk = chunk_priv;
158
159 mlxsw_sp_acl_ctcam_chunk_init(&region->cregion, &chunk->cchunk,
160 priority);
161}
162
163static void mlxsw_sp1_acl_tcam_chunk_fini(void *chunk_priv)
164{
165 struct mlxsw_sp1_acl_tcam_chunk *chunk = chunk_priv;
166
167 mlxsw_sp_acl_ctcam_chunk_fini(&chunk->cchunk);
168}
169
170static int mlxsw_sp1_acl_tcam_entry_add(struct mlxsw_sp *mlxsw_sp,
171 void *region_priv, void *chunk_priv,
172 void *entry_priv,
173 struct mlxsw_sp_acl_rule_info *rulei)
174{
175 struct mlxsw_sp1_acl_tcam_region *region = region_priv;
176 struct mlxsw_sp1_acl_tcam_chunk *chunk = chunk_priv;
177 struct mlxsw_sp1_acl_tcam_entry *entry = entry_priv;
178
179 return mlxsw_sp_acl_ctcam_entry_add(mlxsw_sp, &region->cregion,
180 &chunk->cchunk, &entry->centry,
181 rulei, false);
182}
183
184static void mlxsw_sp1_acl_tcam_entry_del(struct mlxsw_sp *mlxsw_sp,
185 void *region_priv, void *chunk_priv,
186 void *entry_priv)
187{
188 struct mlxsw_sp1_acl_tcam_region *region = region_priv;
189 struct mlxsw_sp1_acl_tcam_chunk *chunk = chunk_priv;
190 struct mlxsw_sp1_acl_tcam_entry *entry = entry_priv;
191
192 mlxsw_sp_acl_ctcam_entry_del(mlxsw_sp, &region->cregion,
193 &chunk->cchunk, &entry->centry);
194}
195
196static int
197mlxsw_sp1_acl_tcam_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
198 void *region_priv, void *entry_priv,
199 struct mlxsw_sp_acl_rule_info *rulei)
200{
201 return -EOPNOTSUPP;
202}
203
204static int
205mlxsw_sp1_acl_tcam_region_entry_activity_get(struct mlxsw_sp *mlxsw_sp,
206 struct mlxsw_sp_acl_tcam_region *_region,
207 unsigned int offset,
208 bool *activity)
209{
210 char ptce2_pl[MLXSW_REG_PTCE2_LEN];
211 int err;
212
213 mlxsw_reg_ptce2_pack(ptce2_pl, true, MLXSW_REG_PTCE2_OP_QUERY_CLEAR_ON_READ,
214 _region->tcam_region_info, offset, 0);
215 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl);
216 if (err)
217 return err;
218 *activity = mlxsw_reg_ptce2_a_get(ptce2_pl);
219 return 0;
220}
221
222static int
223mlxsw_sp1_acl_tcam_entry_activity_get(struct mlxsw_sp *mlxsw_sp,
224 void *region_priv, void *entry_priv,
225 bool *activity)
226{
227 struct mlxsw_sp1_acl_tcam_region *region = region_priv;
228 struct mlxsw_sp1_acl_tcam_entry *entry = entry_priv;
229 unsigned int offset;
230
231 offset = mlxsw_sp_acl_ctcam_entry_offset(&entry->centry);
232 return mlxsw_sp1_acl_tcam_region_entry_activity_get(mlxsw_sp,
233 region->region,
234 offset, activity);
235}
236
237const struct mlxsw_sp_acl_tcam_ops mlxsw_sp1_acl_tcam_ops = {
238 .key_type = MLXSW_REG_PTAR_KEY_TYPE_FLEX,
239 .priv_size = 0,
240 .init = mlxsw_sp1_acl_tcam_init,
241 .fini = mlxsw_sp1_acl_tcam_fini,
242 .region_priv_size = sizeof(struct mlxsw_sp1_acl_tcam_region),
243 .region_init = mlxsw_sp1_acl_tcam_region_init,
244 .region_fini = mlxsw_sp1_acl_tcam_region_fini,
245 .region_associate = mlxsw_sp1_acl_tcam_region_associate,
246 .chunk_priv_size = sizeof(struct mlxsw_sp1_acl_tcam_chunk),
247 .chunk_init = mlxsw_sp1_acl_tcam_chunk_init,
248 .chunk_fini = mlxsw_sp1_acl_tcam_chunk_fini,
249 .entry_priv_size = sizeof(struct mlxsw_sp1_acl_tcam_entry),
250 .entry_add = mlxsw_sp1_acl_tcam_entry_add,
251 .entry_del = mlxsw_sp1_acl_tcam_entry_del,
252 .entry_action_replace = mlxsw_sp1_acl_tcam_entry_action_replace,
253 .entry_activity_get = mlxsw_sp1_acl_tcam_entry_activity_get,
254};
255

source code of linux/drivers/net/ethernet/mellanox/mlxsw/spectrum1_acl_tcam.c