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(mlxsw_sp, 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(mlxsw_sp, 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