drivers/net/wireless/iwlwifi/mvm/tof.c

   1 /******************************************************************************
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   6  * GPL LICENSE SUMMARY
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   8  * Copyright(c) 2015 Intel Deutschland GmbH
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  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
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  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  61  *
  62  *****************************************************************************/
  63 #include "mvm.h"
  64 #include "fw-api-tof.h"
  65
  66 #define IWL_MVM_TOF_RANGE_REQ_MAX_ID 256
  67
  68 void iwl_mvm_tof_init(struct iwl_mvm *mvm)
  69 {
  70         struct iwl_mvm_tof_data *tof_data = &mvm->tof_data;
  71
  72         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
  73                 return;
  74
  75         memset(tof_data, 0, sizeof(*tof_data));
  76
  77         tof_data->tof_cfg.sub_grp_cmd_id = cpu_to_le32(TOF_CONFIG_CMD);
  78
  79 #ifdef CONFIG_IWLWIFI_DEBUGFS
  80         if (IWL_MVM_TOF_IS_RESPONDER) {
  81                 tof_data->responder_cfg.sub_grp_cmd_id =
  82                         cpu_to_le32(TOF_RESPONDER_CONFIG_CMD);
  83                 tof_data->responder_cfg.sta_id = IWL_MVM_STATION_COUNT;
  84         }
  85 #endif
  86
  87         tof_data->range_req.sub_grp_cmd_id = cpu_to_le32(TOF_RANGE_REQ_CMD);
  88         tof_data->range_req.req_timeout = 1;
  89         tof_data->range_req.initiator = 1;
  90         tof_data->range_req.report_policy = 3;
  91
  92         tof_data->range_req_ext.sub_grp_cmd_id =
  93                 cpu_to_le32(TOF_RANGE_REQ_EXT_CMD);
  94
  95         mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
  96 }
  97
  98 void iwl_mvm_tof_clean(struct iwl_mvm *mvm)
  99 {
 100         struct iwl_mvm_tof_data *tof_data = &mvm->tof_data;
 101
 102         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
 103                 return;
 104
 105         memset(tof_data, 0, sizeof(*tof_data));
 106         mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
 107 }
 108
 109 static void iwl_tof_iterator(void *_data, u8 *mac,
 110                              struct ieee80211_vif *vif)
 111 {
 112         bool *enabled = _data;
 113
 114         /* non bss vif exists */
 115         if (ieee80211_vif_type_p2p(vif) !=  NL80211_IFTYPE_STATION)
 116                 *enabled = false;
 117 }
 118
 119 int iwl_mvm_tof_config_cmd(struct iwl_mvm *mvm)
 120 {
 121         struct iwl_tof_config_cmd *cmd = &mvm->tof_data.tof_cfg;
 122         bool enabled;
 123
 124         lockdep_assert_held(&mvm->mutex);
 125
 126         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
 127                 return -EINVAL;
 128
 129         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
 130                                                    IEEE80211_IFACE_ITER_NORMAL,
 131                                                    iwl_tof_iterator, &enabled);
 132         if (!enabled) {
 133                 IWL_DEBUG_INFO(mvm, "ToF is not supported (non bss vif)\n");
 134                 return -EINVAL;
 135         }
 136
 137         mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
 138         return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
 139                                                     IWL_ALWAYS_LONG_GROUP, 0),
 140                                     0, sizeof(*cmd), cmd);
 141 }
 142
 143 int iwl_mvm_tof_range_abort_cmd(struct iwl_mvm *mvm, u8 id)
 144 {
 145         struct iwl_tof_range_abort_cmd cmd = {
 146                 .sub_grp_cmd_id = cpu_to_le32(TOF_RANGE_ABORT_CMD),
 147                 .request_id = id,
 148         };
 149
 150         lockdep_assert_held(&mvm->mutex);
 151
 152         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
 153                 return -EINVAL;
 154
 155         if (id != mvm->tof_data.active_range_request) {
 156                 IWL_ERR(mvm, "Invalid range request id %d (active %d)\n",
 157                         id, mvm->tof_data.active_range_request);
 158                 return -EINVAL;
 159         }
 160
 161         /* after abort is sent there's no active request anymore */
 162         mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
 163
 164         return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
 165                                                     IWL_ALWAYS_LONG_GROUP, 0),
 166                                     0, sizeof(cmd), &cmd);
 167 }
 168
 169 #ifdef CONFIG_IWLWIFI_DEBUGFS
 170 int iwl_mvm_tof_responder_cmd(struct iwl_mvm *mvm,
 171                               struct ieee80211_vif *vif)
 172 {
 173         struct iwl_tof_responder_config_cmd *cmd = &mvm->tof_data.responder_cfg;
 174         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 175
 176         lockdep_assert_held(&mvm->mutex);
 177
 178         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
 179                 return -EINVAL;
 180
 181         if (vif->p2p || vif->type != NL80211_IFTYPE_AP ||
 182             !mvmvif->ap_ibss_active) {
 183                 IWL_ERR(mvm, "Cannot start responder, not in AP mode\n");
 184                 return -EIO;
 185         }
 186
 187         cmd->sta_id = mvmvif->bcast_sta.sta_id;
 188         memcpy(cmd->bssid, vif->addr, ETH_ALEN);
 189         return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
 190                                                     IWL_ALWAYS_LONG_GROUP, 0),
 191                                     0, sizeof(*cmd), cmd);
 192 }
 193 #endif
 194
 195 int iwl_mvm_tof_range_request_cmd(struct iwl_mvm *mvm,
 196                                   struct ieee80211_vif *vif)
 197 {
 198         struct iwl_host_cmd cmd = {
 199                 .id = iwl_cmd_id(TOF_CMD, IWL_ALWAYS_LONG_GROUP, 0),
 200                 .len = { sizeof(mvm->tof_data.range_req), },
 201                 /* no copy because of the command size */
 202                 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
 203         };
 204
 205         lockdep_assert_held(&mvm->mutex);
 206
 207         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
 208                 return -EINVAL;
 209
 210         if (ieee80211_vif_type_p2p(vif) !=  NL80211_IFTYPE_STATION) {
 211                 IWL_ERR(mvm, "Cannot send range request, not STA mode\n");
 212                 return -EIO;
 213         }
 214
 215         /* nesting of range requests is not supported in FW */
 216         if (mvm->tof_data.active_range_request !=
 217                 IWL_MVM_TOF_RANGE_REQ_MAX_ID) {
 218                 IWL_ERR(mvm, "Cannot send range req, already active req %d\n",
 219                         mvm->tof_data.active_range_request);
 220                 return -EIO;
 221         }
 222
 223         mvm->tof_data.active_range_request = mvm->tof_data.range_req.request_id;
 224
 225         cmd.data[0] = &mvm->tof_data.range_req;
 226         return iwl_mvm_send_cmd(mvm, &cmd);
 227 }
 228
 229 int iwl_mvm_tof_range_request_ext_cmd(struct iwl_mvm *mvm,
 230                                       struct ieee80211_vif *vif)
 231 {
 232         lockdep_assert_held(&mvm->mutex);
 233
 234         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
 235                 return -EINVAL;
 236
 237         if (ieee80211_vif_type_p2p(vif) !=  NL80211_IFTYPE_STATION) {
 238                 IWL_ERR(mvm, "Cannot send ext range req, not in STA mode\n");
 239                 return -EIO;
 240         }
 241
 242         return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
 243                                                     IWL_ALWAYS_LONG_GROUP, 0),
 244                                     0, sizeof(mvm->tof_data.range_req_ext),
 245                                     &mvm->tof_data.range_req_ext);
 246 }
 247
 248 static int iwl_mvm_tof_range_resp(struct iwl_mvm *mvm, void *data)
 249 {
 250         struct iwl_tof_range_rsp_ntfy *resp = (void *)data;
 251
 252         if (resp->request_id != mvm->tof_data.active_range_request) {
 253                 IWL_ERR(mvm, "Request id mismatch, got %d, active %d\n",
 254                         resp->request_id, mvm->tof_data.active_range_request);
 255                 return -EIO;
 256         }
 257
 258         memcpy(&mvm->tof_data.range_resp, resp,
 259                sizeof(struct iwl_tof_range_rsp_ntfy));
 260         mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
 261
 262         return 0;
 263 }
 264
 265 static int iwl_mvm_tof_mcsi_notif(struct iwl_mvm *mvm, void *data)
 266 {
 267         struct iwl_tof_mcsi_notif *resp = (struct iwl_tof_mcsi_notif *)data;
 268
 269         IWL_DEBUG_INFO(mvm, "MCSI notification, token %d\n", resp->token);
 270         return 0;
 271 }
 272
 273 static int iwl_mvm_tof_nb_report_notif(struct iwl_mvm *mvm, void *data)
 274 {
 275         struct iwl_tof_neighbor_report *report =
 276                 (struct iwl_tof_neighbor_report *)data;
 277
 278         IWL_DEBUG_INFO(mvm, "NB report, bssid %pM, token %d, status 0x%x\n",
 279                        report->bssid, report->request_token, report->status);
 280         return 0;
 281 }
 282
 283 void iwl_mvm_tof_resp_handler(struct iwl_mvm *mvm,
 284                               struct iwl_rx_cmd_buffer *rxb)
 285 {
 286         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 287         struct iwl_tof_gen_resp_cmd *resp = (void *)pkt->data;
 288
 289         lockdep_assert_held(&mvm->mutex);
 290
 291         switch (le32_to_cpu(resp->sub_grp_cmd_id)) {
 292         case TOF_RANGE_RESPONSE_NOTIF:
 293                 iwl_mvm_tof_range_resp(mvm, resp->data);
 294                 break;
 295         case TOF_MCSI_DEBUG_NOTIF:
 296                 iwl_mvm_tof_mcsi_notif(mvm, resp->data);
 297                 break;
 298         case TOF_NEIGHBOR_REPORT_RSP_NOTIF:
 299                 iwl_mvm_tof_nb_report_notif(mvm, resp->data);
 300                 break;
 301         default:
 302                IWL_ERR(mvm, "Unknown sub-group command 0x%x\n",
 303                        resp->sub_grp_cmd_id);
 304                break;
 305         }
 306 }