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, 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(&otx2_devlink_ops, 89 sizeof(struct otx2_devlink), pfvf->dev); 90 if (!dl) { 91 dev_warn(pfvf->dev, "devlink_alloc failed\n"); 92 return -ENOMEM; 93 } 94 95 otx2_dl = devlink_priv(dl); 96 otx2_dl->dl = dl; 97 otx2_dl->pfvf = pfvf; 98 pfvf->dl = otx2_dl; 99 100 err = devlink_params_register(dl, 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(dl); 109 return 0; 110 111 err_dl: 112 devlink_free(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(dl); 122 devlink_params_unregister(dl, otx2_dl_params, 123 ARRAY_SIZE(otx2_dl_params)); 124 devlink_free(dl); 125 } 126