1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* Marvell RVU PF/VF Netdev Devlink |
3 | * |
4 | * Copyright (C) 2021 Marvell. |
5 | */ |
6 | |
7 | #include "otx2_common.h" |
8 | |
9 | /* Devlink Params APIs */ |
10 | static int otx2_dl_mcam_count_validate(struct devlink *devlink, u32 id, |
11 | union devlink_param_value val, |
12 | struct netlink_ext_ack *extack) |
13 | { |
14 | struct otx2_devlink *otx2_dl = devlink_priv(devlink); |
15 | struct otx2_nic *pfvf = otx2_dl->pfvf; |
16 | struct otx2_flow_config *flow_cfg; |
17 | |
18 | if (!pfvf->flow_cfg) { |
19 | NL_SET_ERR_MSG_MOD(extack, |
20 | "pfvf->flow_cfg not initialized" ); |
21 | return -EINVAL; |
22 | } |
23 | |
24 | flow_cfg = pfvf->flow_cfg; |
25 | if (flow_cfg && flow_cfg->nr_flows) { |
26 | NL_SET_ERR_MSG_MOD(extack, |
27 | "Cannot modify count when there are active rules" ); |
28 | return -EINVAL; |
29 | } |
30 | |
31 | return 0; |
32 | } |
33 | |
34 | static int otx2_dl_mcam_count_set(struct devlink *devlink, u32 id, |
35 | struct devlink_param_gset_ctx *ctx) |
36 | { |
37 | struct otx2_devlink *otx2_dl = devlink_priv(devlink); |
38 | struct otx2_nic *pfvf = otx2_dl->pfvf; |
39 | |
40 | if (!pfvf->flow_cfg) |
41 | return 0; |
42 | |
43 | otx2_alloc_mcam_entries(pfvf, count: ctx->val.vu16); |
44 | |
45 | return 0; |
46 | } |
47 | |
48 | static int otx2_dl_mcam_count_get(struct devlink *devlink, u32 id, |
49 | struct devlink_param_gset_ctx *ctx) |
50 | { |
51 | struct otx2_devlink *otx2_dl = devlink_priv(devlink); |
52 | struct otx2_nic *pfvf = otx2_dl->pfvf; |
53 | struct otx2_flow_config *flow_cfg; |
54 | |
55 | if (!pfvf->flow_cfg) { |
56 | ctx->val.vu16 = 0; |
57 | return 0; |
58 | } |
59 | |
60 | flow_cfg = pfvf->flow_cfg; |
61 | ctx->val.vu16 = flow_cfg->max_flows; |
62 | |
63 | return 0; |
64 | } |
65 | |
66 | enum otx2_dl_param_id { |
67 | OTX2_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX, |
68 | OTX2_DEVLINK_PARAM_ID_MCAM_COUNT, |
69 | }; |
70 | |
71 | static const struct devlink_param otx2_dl_params[] = { |
72 | DEVLINK_PARAM_DRIVER(OTX2_DEVLINK_PARAM_ID_MCAM_COUNT, |
73 | "mcam_count" , DEVLINK_PARAM_TYPE_U16, |
74 | BIT(DEVLINK_PARAM_CMODE_RUNTIME), |
75 | otx2_dl_mcam_count_get, otx2_dl_mcam_count_set, |
76 | otx2_dl_mcam_count_validate), |
77 | }; |
78 | |
79 | static const struct devlink_ops otx2_devlink_ops = { |
80 | }; |
81 | |
82 | int otx2_register_dl(struct otx2_nic *pfvf) |
83 | { |
84 | struct otx2_devlink *otx2_dl; |
85 | struct devlink *dl; |
86 | int err; |
87 | |
88 | dl = devlink_alloc(ops: &otx2_devlink_ops, |
89 | priv_size: sizeof(struct otx2_devlink), dev: pfvf->dev); |
90 | if (!dl) { |
91 | dev_warn(pfvf->dev, "devlink_alloc failed\n" ); |
92 | return -ENOMEM; |
93 | } |
94 | |
95 | otx2_dl = devlink_priv(devlink: dl); |
96 | otx2_dl->dl = dl; |
97 | otx2_dl->pfvf = pfvf; |
98 | pfvf->dl = otx2_dl; |
99 | |
100 | err = devlink_params_register(devlink: dl, params: otx2_dl_params, |
101 | ARRAY_SIZE(otx2_dl_params)); |
102 | if (err) { |
103 | dev_err(pfvf->dev, |
104 | "devlink params register failed with error %d" , err); |
105 | goto err_dl; |
106 | } |
107 | |
108 | devlink_register(devlink: dl); |
109 | return 0; |
110 | |
111 | err_dl: |
112 | devlink_free(devlink: dl); |
113 | return err; |
114 | } |
115 | |
116 | void otx2_unregister_dl(struct otx2_nic *pfvf) |
117 | { |
118 | struct otx2_devlink *otx2_dl = pfvf->dl; |
119 | struct devlink *dl = otx2_dl->dl; |
120 | |
121 | devlink_unregister(devlink: dl); |
122 | devlink_params_unregister(devlink: dl, params: otx2_dl_params, |
123 | ARRAY_SIZE(otx2_dl_params)); |
124 | devlink_free(devlink: dl); |
125 | } |
126 | |