1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
// SPDX-License-Identifier: GPL-2.0+
/* Microchip Sparx5 Switch driver VCAP implementation
*
* Copyright (c) 2022 Microchip Technology Inc. and its subsidiaries.
*
* The Sparx5 Chip Register Model can be browsed at this location:
* https://github.com/microchip-ung/sparx-5_reginfo
*/
#include <linux/types.h>
#include <linux/list.h>
#include "vcap_api.h"
#include "vcap_api_client.h"
#include "sparx5_main_regs.h"
#include "sparx5_main.h"
#include "sparx5_vcap_impl.h"
#include "sparx5_vcap_ag_api.h"
#define SUPER_VCAP_BLK_SIZE 3072 /* addresses per Super VCAP block */
#define STREAMSIZE (64 * 4) /* bytes in the VCAP cache area */
#define SPARX5_IS2_LOOKUPS 4
static struct sparx5_vcap_inst {
enum vcap_type vtype; /* type of vcap */
int vinst; /* instance number within the same type */
int lookups; /* number of lookups in this vcap type */
int lookups_per_instance; /* number of lookups in this instance */
int first_cid; /* first chain id in this vcap */
int last_cid; /* last chain id in this vcap */
int count; /* number of available addresses, not in super vcap */
int map_id; /* id in the super vcap block mapping (if applicable) */
int blockno; /* starting block in super vcap (if applicable) */
int blocks; /* number of blocks in super vcap (if applicable) */
} sparx5_vcap_inst_cfg[] = {
{
.vtype = VCAP_TYPE_IS2, /* IS2-0 */
.vinst = 0,
.map_id = 4,
.lookups = SPARX5_IS2_LOOKUPS,
.lookups_per_instance = SPARX5_IS2_LOOKUPS / 2,
.first_cid = SPARX5_VCAP_CID_IS2_L0,
.last_cid = SPARX5_VCAP_CID_IS2_L2 - 1,
.blockno = 0, /* Maps block 0-1 */
.blocks = 2,
},
{
.vtype = VCAP_TYPE_IS2, /* IS2-1 */
.vinst = 1,
.map_id = 5,
.lookups = SPARX5_IS2_LOOKUPS,
.lookups_per_instance = SPARX5_IS2_LOOKUPS / 2,
.first_cid = SPARX5_VCAP_CID_IS2_L2,
.last_cid = SPARX5_VCAP_CID_IS2_MAX,
.blockno = 2, /* Maps block 2-3 */
.blocks = 2,
},
};
static void sparx5_vcap_admin_free(struct vcap_admin *admin)
{
if (!admin)
return;
kfree(admin->cache.keystream);
kfree(admin->cache.maskstream);
kfree(admin->cache.actionstream);
kfree(admin);
}
/* Allocate a vcap instance with a rule list and a cache area */
static struct vcap_admin *
sparx5_vcap_admin_alloc(struct sparx5 *sparx5, struct vcap_control *ctrl,
const struct sparx5_vcap_inst *cfg)
{
struct vcap_admin *admin;
admin = kzalloc(sizeof(*admin), GFP_KERNEL);
if (!admin)
return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&admin->list);
INIT_LIST_HEAD(&admin->rules);
admin->vtype = cfg->vtype;
admin->vinst = cfg->vinst;
admin->lookups = cfg->lookups;
admin->lookups_per_instance = cfg->lookups_per_instance;
admin->first_cid = cfg->first_cid;
admin->last_cid = cfg->last_cid;
admin->cache.keystream =
kzalloc(STREAMSIZE, GFP_KERNEL);
admin->cache.maskstream =
kzalloc(STREAMSIZE, GFP_KERNEL);
admin->cache.actionstream =
kzalloc(STREAMSIZE, GFP_KERNEL);
if (!admin->cache.keystream || !admin->cache.maskstream ||
!admin->cache.actionstream) {
sparx5_vcap_admin_free(admin);
return ERR_PTR(-ENOMEM);
}
return admin;
}
/* Do block allocations and provide addresses for VCAP instances */
static void sparx5_vcap_block_alloc(struct sparx5 *sparx5,
struct vcap_admin *admin,
const struct sparx5_vcap_inst *cfg)
{
int idx;
/* Super VCAP block mapping and address configuration. Block 0
* is assigned addresses 0 through 3071, block 1 is assigned
* addresses 3072 though 6143, and so on.
*/
for (idx = cfg->blockno; idx < cfg->blockno + cfg->blocks; ++idx) {
spx5_wr(VCAP_SUPER_IDX_CORE_IDX_SET(idx), sparx5,
VCAP_SUPER_IDX);
spx5_wr(VCAP_SUPER_MAP_CORE_MAP_SET(cfg->map_id), sparx5,
VCAP_SUPER_MAP);
}
admin->first_valid_addr = cfg->blockno * SUPER_VCAP_BLK_SIZE;
admin->last_used_addr = admin->first_valid_addr +
cfg->blocks * SUPER_VCAP_BLK_SIZE;
admin->last_valid_addr = admin->last_used_addr - 1;
}
/* Allocate a vcap control and vcap instances and configure the system */
int sparx5_vcap_init(struct sparx5 *sparx5)
{
const struct sparx5_vcap_inst *cfg;
struct vcap_control *ctrl;
struct vcap_admin *admin;
int err = 0, idx;
/* Create a VCAP control instance that owns the platform specific VCAP
* model with VCAP instances and information about keysets, keys,
* actionsets and actions
* - Create administrative state for each available VCAP
* - Lists of rules
* - Address information
* - Initialize VCAP blocks
*/
ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
if (!ctrl)
return -ENOMEM;
sparx5->vcap_ctrl = ctrl;
/* select the sparx5 VCAP model */
ctrl->vcaps = sparx5_vcaps;
ctrl->stats = &sparx5_vcap_stats;
INIT_LIST_HEAD(&ctrl->list);
for (idx = 0; idx < ARRAY_SIZE(sparx5_vcap_inst_cfg); ++idx) {
cfg = &sparx5_vcap_inst_cfg[idx];
admin = sparx5_vcap_admin_alloc(sparx5, ctrl, cfg);
if (IS_ERR(admin)) {
err = PTR_ERR(admin);
pr_err("%s:%d: vcap allocation failed: %d\n",
__func__, __LINE__, err);
return err;
}
sparx5_vcap_block_alloc(sparx5, admin, cfg);
list_add_tail(&admin->list, &ctrl->list);
}
return err;
}
void sparx5_vcap_destroy(struct sparx5 *sparx5)
{
struct vcap_control *ctrl = sparx5->vcap_ctrl;
struct vcap_admin *admin, *admin_next;
if (!ctrl)
return;
list_for_each_entry_safe(admin, admin_next, &ctrl->list, list) {
list_del(&admin->list);
sparx5_vcap_admin_free(admin);
}
kfree(ctrl);
}
|
