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
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
|
/* Broadcom NetXtreme-C/E network driver.
*
* Copyright (c) 2017 Broadcom Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*/
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <net/devlink.h>
#include "bnxt_hsi.h"
#include "bnxt.h"
#include "bnxt_vfr.h"
#include "bnxt_devlink.h"
static const struct devlink_ops bnxt_dl_ops = {
#ifdef CONFIG_BNXT_SRIOV
.eswitch_mode_set = bnxt_dl_eswitch_mode_set,
.eswitch_mode_get = bnxt_dl_eswitch_mode_get,
#endif /* CONFIG_BNXT_SRIOV */
};
enum bnxt_dl_param_id {
BNXT_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK,
};
static const struct bnxt_dl_nvm_param nvm_params[] = {
{DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV, NVM_OFF_ENABLE_SRIOV,
BNXT_NVM_SHARED_CFG, 1},
{DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI, NVM_OFF_IGNORE_ARI,
BNXT_NVM_SHARED_CFG, 1},
{DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
NVM_OFF_MSIX_VEC_PER_PF_MAX, BNXT_NVM_SHARED_CFG, 10},
{DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
NVM_OFF_MSIX_VEC_PER_PF_MIN, BNXT_NVM_SHARED_CFG, 7},
{BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK, NVM_OFF_DIS_GRE_VER_CHECK,
BNXT_NVM_SHARED_CFG, 1},
};
static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg,
int msg_len, union devlink_param_value *val)
{
struct hwrm_nvm_get_variable_input *req = msg;
void *data_addr = NULL, *buf = NULL;
struct bnxt_dl_nvm_param nvm_param;
int bytesize, idx = 0, rc, i;
dma_addr_t data_dma_addr;
/* Get/Set NVM CFG parameter is supported only on PFs */
if (BNXT_VF(bp))
return -EPERM;
for (i = 0; i < ARRAY_SIZE(nvm_params); i++) {
if (nvm_params[i].id == param_id) {
nvm_param = nvm_params[i];
break;
}
}
if (i == ARRAY_SIZE(nvm_params))
return -EOPNOTSUPP;
if (nvm_param.dir_type == BNXT_NVM_PORT_CFG)
idx = bp->pf.port_id;
else if (nvm_param.dir_type == BNXT_NVM_FUNC_CFG)
idx = bp->pf.fw_fid - BNXT_FIRST_PF_FID;
bytesize = roundup(nvm_param.num_bits, BITS_PER_BYTE) / BITS_PER_BYTE;
switch (bytesize) {
case 1:
if (nvm_param.num_bits == 1)
buf = &val->vbool;
else
buf = &val->vu8;
break;
case 2:
buf = &val->vu16;
break;
case 4:
buf = &val->vu32;
break;
default:
return -EFAULT;
}
data_addr = dma_alloc_coherent(&bp->pdev->dev, bytesize,
&data_dma_addr, GFP_KERNEL);
if (!data_addr)
return -ENOMEM;
req->dest_data_addr = cpu_to_le64(data_dma_addr);
req->data_len = cpu_to_le16(nvm_param.num_bits);
req->option_num = cpu_to_le16(nvm_param.offset);
req->index_0 = cpu_to_le16(idx);
if (idx)
req->dimensions = cpu_to_le16(1);
if (req->req_type == cpu_to_le16(HWRM_NVM_SET_VARIABLE)) {
memcpy(data_addr, buf, bytesize);
rc = hwrm_send_message(bp, msg, msg_len, HWRM_CMD_TIMEOUT);
} else {
rc = hwrm_send_message_silent(bp, msg, msg_len,
HWRM_CMD_TIMEOUT);
}
if (!rc && req->req_type == cpu_to_le16(HWRM_NVM_GET_VARIABLE))
memcpy(buf, data_addr, bytesize);
dma_free_coherent(&bp->pdev->dev, bytesize, data_addr, data_dma_addr);
if (rc == HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED) {
netdev_err(bp->dev, "PF does not have admin privileges to modify NVM config\n");
return -EACCES;
} else if (rc) {
return -EIO;
}
return 0;
}
static int bnxt_dl_nvm_param_get(struct devlink *dl, u32 id,
struct devlink_param_gset_ctx *ctx)
{
struct hwrm_nvm_get_variable_input req = {0};
struct bnxt *bp = bnxt_get_bp_from_dl(dl);
int rc;
bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_GET_VARIABLE, -1, -1);
rc = bnxt_hwrm_nvm_req(bp, id, &req, sizeof(req), &ctx->val);
if (!rc)
if (id == BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK)
ctx->val.vbool = !ctx->val.vbool;
return rc;
}
static int bnxt_dl_nvm_param_set(struct devlink *dl, u32 id,
struct devlink_param_gset_ctx *ctx)
{
struct hwrm_nvm_set_variable_input req = {0};
struct bnxt *bp = bnxt_get_bp_from_dl(dl);
bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_SET_VARIABLE, -1, -1);
if (id == BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK)
ctx->val.vbool = !ctx->val.vbool;
return bnxt_hwrm_nvm_req(bp, id, &req, sizeof(req), &ctx->val);
}
static int bnxt_dl_msix_validate(struct devlink *dl, u32 id,
union devlink_param_value val,
struct netlink_ext_ack *extack)
{
int max_val = -1;
if (id == DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX)
max_val = BNXT_MSIX_VEC_MAX;
if (id == DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN)
max_val = BNXT_MSIX_VEC_MIN_MAX;
if (val.vu32 > max_val) {
NL_SET_ERR_MSG_MOD(extack, "MSIX value is exceeding the range");
return -EINVAL;
}
return 0;
}
static const struct devlink_param bnxt_dl_params[] = {
DEVLINK_PARAM_GENERIC(ENABLE_SRIOV,
BIT(DEVLINK_PARAM_CMODE_PERMANENT),
bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,
NULL),
DEVLINK_PARAM_GENERIC(IGNORE_ARI,
BIT(DEVLINK_PARAM_CMODE_PERMANENT),
bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,
NULL),
DEVLINK_PARAM_GENERIC(MSIX_VEC_PER_PF_MAX,
BIT(DEVLINK_PARAM_CMODE_PERMANENT),
bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,
bnxt_dl_msix_validate),
DEVLINK_PARAM_GENERIC(MSIX_VEC_PER_PF_MIN,
BIT(DEVLINK_PARAM_CMODE_PERMANENT),
bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,
bnxt_dl_msix_validate),
DEVLINK_PARAM_DRIVER(BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK,
"gre_ver_check", DEVLINK_PARAM_TYPE_BOOL,
BIT(DEVLINK_PARAM_CMODE_PERMANENT),
bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,
NULL),
};
static const struct devlink_param bnxt_dl_port_params[] = {
};
int bnxt_dl_register(struct bnxt *bp)
{
struct devlink *dl;
int rc;
if (bp->hwrm_spec_code < 0x10600) {
netdev_warn(bp->dev, "Firmware does not support NVM params");
return -ENOTSUPP;
}
dl = devlink_alloc(&bnxt_dl_ops, sizeof(struct bnxt_dl));
if (!dl) {
netdev_warn(bp->dev, "devlink_alloc failed");
return -ENOMEM;
}
bnxt_link_bp_to_dl(bp, dl);
/* Add switchdev eswitch mode setting, if SRIOV supported */
if (pci_find_ext_capability(bp->pdev, PCI_EXT_CAP_ID_SRIOV) &&
bp->hwrm_spec_code > 0x10803)
bp->eswitch_mode = DEVLINK_ESWITCH_MODE_LEGACY;
rc = devlink_register(dl, &bp->pdev->dev);
if (rc) {
netdev_warn(bp->dev, "devlink_register failed. rc=%d", rc);
goto err_dl_free;
}
rc = devlink_params_register(dl, bnxt_dl_params,
ARRAY_SIZE(bnxt_dl_params));
if (rc) {
netdev_warn(bp->dev, "devlink_params_register failed. rc=%d",
rc);
goto err_dl_unreg;
}
devlink_port_attrs_set(&bp->dl_port, DEVLINK_PORT_FLAVOUR_PHYSICAL,
bp->pf.port_id, false, 0,
bp->switch_id, sizeof(bp->switch_id));
rc = devlink_port_register(dl, &bp->dl_port, bp->pf.port_id);
if (rc) {
netdev_err(bp->dev, "devlink_port_register failed");
goto err_dl_param_unreg;
}
devlink_port_type_eth_set(&bp->dl_port, bp->dev);
rc = devlink_port_params_register(&bp->dl_port, bnxt_dl_port_params,
ARRAY_SIZE(bnxt_dl_port_params));
if (rc) {
netdev_err(bp->dev, "devlink_port_params_register failed");
goto err_dl_port_unreg;
}
devlink_params_publish(dl);
return 0;
err_dl_port_unreg:
devlink_port_unregister(&bp->dl_port);
err_dl_param_unreg:
devlink_params_unregister(dl, bnxt_dl_params,
ARRAY_SIZE(bnxt_dl_params));
err_dl_unreg:
devlink_unregister(dl);
err_dl_free:
bnxt_link_bp_to_dl(bp, NULL);
devlink_free(dl);
return rc;
}
void bnxt_dl_unregister(struct bnxt *bp)
{
struct devlink *dl = bp->dl;
if (!dl)
return;
devlink_port_params_unregister(&bp->dl_port, bnxt_dl_port_params,
ARRAY_SIZE(bnxt_dl_port_params));
devlink_port_unregister(&bp->dl_port);
devlink_params_unregister(dl, bnxt_dl_params,
ARRAY_SIZE(bnxt_dl_params));
devlink_unregister(dl);
devlink_free(dl);
}
|
