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(payload: ptar_pl, op: MLXSW_REG_PTAR_OP_RESIZE, |
21 | key_type: region->key_type, region_size: new_size, region_id: region->id, |
22 | tcam_region_info: region->tcam_region_info); |
23 | return mlxsw_reg_write(mlxsw_core: mlxsw_sp->core, MLXSW_REG(ptar), payload: 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(payload: prcr_pl, op: MLXSW_REG_PRCR_OP_MOVE, |
34 | src_tcam_region_info: region->tcam_region_info, src_offset, |
35 | dest_tcam_region_info: region->tcam_region_info, dest_offset: dst_offset, size); |
36 | mlxsw_reg_write(mlxsw_core: mlxsw_sp->core, MLXSW_REG(prcr), payload: 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(acl: 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: &priority, |
56 | fillup_priority); |
57 | if (err) |
58 | return err; |
59 | |
60 | mlxsw_reg_ptce2_pack(payload: ptce2_pl, valid: true, op: MLXSW_REG_PTCE2_OP_WRITE_WRITE, |
61 | tcam_region_info: region->tcam_region_info, |
62 | offset: centry->parman_item.index, priority); |
63 | key = mlxsw_reg_ptce2_flex_key_blocks_data(buf: ptce2_pl); |
64 | mask = mlxsw_reg_ptce2_mask_data(buf: ptce2_pl); |
65 | mlxsw_afk_encode(mlxsw_afk: afk, key_info: region->key_info, values: &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(block: rulei->act_block); |
73 | mlxsw_reg_ptce2_flex_action_set_memcpy_to(buf: ptce2_pl, src: act_set); |
74 | |
75 | err = mlxsw_reg_write(mlxsw_core: mlxsw_sp->core, MLXSW_REG(ptce2), payload: 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 |
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(payload: ptce2_pl, valid: false, op: MLXSW_REG_PTCE2_OP_WRITE_WRITE, |
94 | tcam_region_info: cregion->region->tcam_region_info, |
95 | offset: centry->parman_item.index, priority: 0); |
96 | mlxsw_reg_write(mlxsw_core: mlxsw_sp->core, MLXSW_REG(ptce2), payload: ptce2_pl); |
97 | cregion->ops->entry_remove(cregion, centry); |
98 | } |
99 | |
100 | static int |
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(payload: ptce2_pl, valid: true, op: MLXSW_REG_PTCE2_OP_WRITE_UPDATE, |
111 | tcam_region_info: cregion->region->tcam_region_info, |
112 | offset: centry->parman_item.index, priority); |
113 | |
114 | act_set = mlxsw_afa_block_first_set(block: afa_block); |
115 | mlxsw_reg_ptce2_flex_action_set_memcpy_to(buf: ptce2_pl, src: act_set); |
116 | |
117 | return mlxsw_reg_write(mlxsw_core: mlxsw_sp->core, MLXSW_REG(ptce2), payload: ptce2_pl); |
118 | } |
119 | |
120 | |
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_size: new_count); |
133 | } |
134 | |
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 | src_offset: from_index, dst_offset: to_index, size: 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 |
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(ops: &mlxsw_sp_acl_ctcam_region_parman_ops, |
165 | priv: cregion); |
166 | if (!cregion->parman) |
167 | return -ENOMEM; |
168 | return 0; |
169 | } |
170 | |
171 | void mlxsw_sp_acl_ctcam_region_fini(struct mlxsw_sp_acl_ctcam_region *cregion) |
172 | { |
173 | parman_destroy(parman: cregion->parman); |
174 | } |
175 | |
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(parman: cregion->parman, prio: &cchunk->parman_prio, priority); |
181 | } |
182 | |
183 | void mlxsw_sp_acl_ctcam_chunk_fini(struct mlxsw_sp_acl_ctcam_chunk *cchunk) |
184 | { |
185 | parman_prio_fini(prio: &cchunk->parman_prio); |
186 | } |
187 | |
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(parman: cregion->parman, prio: &cchunk->parman_prio, |
198 | item: ¢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(parman: cregion->parman, prio: &cchunk->parman_prio, |
210 | item: ¢ry->parman_item); |
211 | return err; |
212 | } |
213 | |
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(parman: cregion->parman, prio: &cchunk->parman_prio, |
221 | item: ¢ry->parman_item); |
222 | } |
223 | |
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 | afa_block: rulei->act_block, |
232 | priority: rulei->priority); |
233 | } |
234 | |