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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2015 Intel Deutschland GmbH
   9  *
  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
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called COPYING.
  26  *
  27  * Contact Information:
  28  * Intel Linux Wireless <linuxwifi@intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2015 Intel Deutschland GmbH
  34  * All rights reserved.
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  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
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  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
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  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  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_INVALID_STA;
  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         mvm->init_status |= IWL_MVM_INIT_STATUS_TOF_INIT_COMPLETE;
  97 }
  98
  99 void iwl_mvm_tof_clean(struct iwl_mvm *mvm)
 100 {
 101         struct iwl_mvm_tof_data *tof_data = &mvm->tof_data;
 102
 103         if (!fw_has_capa(&mvm->fw->ucode_capa,
 104                          IWL_UCODE_TLV_CAPA_TOF_SUPPORT) ||
 105             !(mvm->init_status & IWL_MVM_INIT_STATUS_TOF_INIT_COMPLETE))
 106                 return;
 107
 108         memset(tof_data, 0, sizeof(*tof_data));
 109         mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
 110         mvm->init_status &= ~IWL_MVM_INIT_STATUS_TOF_INIT_COMPLETE;
 111 }
 112
 113 static void iwl_tof_iterator(void *_data, u8 *mac,
 114                              struct ieee80211_vif *vif)
 115 {
 116         bool *enabled = _data;
 117
 118         /* non bss vif exists */
 119         if (ieee80211_vif_type_p2p(vif) !=  NL80211_IFTYPE_STATION)
 120                 *enabled = false;
 121 }
 122
 123 int iwl_mvm_tof_config_cmd(struct iwl_mvm *mvm)
 124 {
 125         struct iwl_tof_config_cmd *cmd = &mvm->tof_data.tof_cfg;
 126         bool enabled;
 127
 128         lockdep_assert_held(&mvm->mutex);
 129
 130         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
 131                 return -EINVAL;
 132
 133         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
 134                                                    IEEE80211_IFACE_ITER_NORMAL,
 135                                                    iwl_tof_iterator, &enabled);
 136         if (!enabled) {
 137                 IWL_DEBUG_INFO(mvm, "ToF is not supported (non bss vif)\n");
 138                 return -EINVAL;
 139         }
 140
 141         mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
 142         return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
 143                                                     IWL_ALWAYS_LONG_GROUP, 0),
 144                                     0, sizeof(*cmd), cmd);
 145 }
 146
 147 int iwl_mvm_tof_range_abort_cmd(struct iwl_mvm *mvm, u8 id)
 148 {
 149         struct iwl_tof_range_abort_cmd cmd = {
 150                 .sub_grp_cmd_id = cpu_to_le32(TOF_RANGE_ABORT_CMD),
 151                 .request_id = id,
 152         };
 153
 154         lockdep_assert_held(&mvm->mutex);
 155
 156         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
 157                 return -EINVAL;
 158
 159         if (id != mvm->tof_data.active_range_request) {
 160                 IWL_ERR(mvm, "Invalid range request id %d (active %d)\n",
 161                         id, mvm->tof_data.active_range_request);
 162                 return -EINVAL;
 163         }
 164
 165         /* after abort is sent there's no active request anymore */
 166         mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
 167
 168         return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
 169                                                     IWL_ALWAYS_LONG_GROUP, 0),
 170                                     0, sizeof(cmd), &cmd);
 171 }
 172
 173 #ifdef CONFIG_IWLWIFI_DEBUGFS
 174 int iwl_mvm_tof_responder_cmd(struct iwl_mvm *mvm,
 175                               struct ieee80211_vif *vif)
 176 {
 177         struct iwl_tof_responder_config_cmd *cmd = &mvm->tof_data.responder_cfg;
 178         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 179
 180         lockdep_assert_held(&mvm->mutex);
 181
 182         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
 183                 return -EINVAL;
 184
 185         if (vif->p2p || vif->type != NL80211_IFTYPE_AP ||
 186             !mvmvif->ap_ibss_active) {
 187                 IWL_ERR(mvm, "Cannot start responder, not in AP mode\n");
 188                 return -EIO;
 189         }
 190
 191         cmd->sta_id = mvmvif->bcast_sta.sta_id;
 192         memcpy(cmd->bssid, vif->addr, ETH_ALEN);
 193         return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
 194                                                     IWL_ALWAYS_LONG_GROUP, 0),
 195                                     0, sizeof(*cmd), cmd);
 196 }
 197 #endif
 198
 199 int iwl_mvm_tof_range_request_cmd(struct iwl_mvm *mvm,
 200                                   struct ieee80211_vif *vif)
 201 {
 202         struct iwl_host_cmd cmd = {
 203                 .id = iwl_cmd_id(TOF_CMD, IWL_ALWAYS_LONG_GROUP, 0),
 204                 .len = { sizeof(mvm->tof_data.range_req), },
 205                 /* no copy because of the command size */
 206                 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
 207         };
 208
 209         lockdep_assert_held(&mvm->mutex);
 210
 211         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
 212                 return -EINVAL;
 213
 214         if (ieee80211_vif_type_p2p(vif) !=  NL80211_IFTYPE_STATION) {
 215                 IWL_ERR(mvm, "Cannot send range request, not STA mode\n");
 216                 return -EIO;
 217         }
 218
 219         /* nesting of range requests is not supported in FW */
 220         if (mvm->tof_data.active_range_request !=
 221                 IWL_MVM_TOF_RANGE_REQ_MAX_ID) {
 222                 IWL_ERR(mvm, "Cannot send range req, already active req %d\n",
 223                         mvm->tof_data.active_range_request);
 224                 return -EIO;
 225         }
 226
 227         mvm->tof_data.active_range_request = mvm->tof_data.range_req.request_id;
 228
 229         cmd.data[0] = &mvm->tof_data.range_req;
 230         return iwl_mvm_send_cmd(mvm, &cmd);
 231 }
 232
 233 int iwl_mvm_tof_range_request_ext_cmd(struct iwl_mvm *mvm,
 234                                       struct ieee80211_vif *vif)
 235 {
 236         lockdep_assert_held(&mvm->mutex);
 237
 238         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
 239                 return -EINVAL;
 240
 241         if (ieee80211_vif_type_p2p(vif) !=  NL80211_IFTYPE_STATION) {
 242                 IWL_ERR(mvm, "Cannot send ext range req, not in STA mode\n");
 243                 return -EIO;
 244         }
 245
 246         return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
 247                                                     IWL_ALWAYS_LONG_GROUP, 0),
 248                                     0, sizeof(mvm->tof_data.range_req_ext),
 249                                     &mvm->tof_data.range_req_ext);
 250 }
 251
 252 static int iwl_mvm_tof_range_resp(struct iwl_mvm *mvm, void *data)
 253 {
 254         struct iwl_tof_range_rsp_ntfy *resp = (void *)data;
 255
 256         if (resp->request_id != mvm->tof_data.active_range_request) {
 257                 IWL_ERR(mvm, "Request id mismatch, got %d, active %d\n",
 258                         resp->request_id, mvm->tof_data.active_range_request);
 259                 return -EIO;
 260         }
 261
 262         memcpy(&mvm->tof_data.range_resp, resp,
 263                sizeof(struct iwl_tof_range_rsp_ntfy));
 264         mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
 265
 266         return 0;
 267 }
 268
 269 static int iwl_mvm_tof_mcsi_notif(struct iwl_mvm *mvm, void *data)
 270 {
 271         struct iwl_tof_mcsi_notif *resp = (struct iwl_tof_mcsi_notif *)data;
 272
 273         IWL_DEBUG_INFO(mvm, "MCSI notification, token %d\n", resp->token);
 274         return 0;
 275 }
 276
 277 static int iwl_mvm_tof_nb_report_notif(struct iwl_mvm *mvm, void *data)
 278 {
 279         struct iwl_tof_neighbor_report *report =
 280                 (struct iwl_tof_neighbor_report *)data;
 281
 282         IWL_DEBUG_INFO(mvm, "NB report, bssid %pM, token %d, status 0x%x\n",
 283                        report->bssid, report->request_token, report->status);
 284         return 0;
 285 }
 286
 287 void iwl_mvm_tof_resp_handler(struct iwl_mvm *mvm,
 288                               struct iwl_rx_cmd_buffer *rxb)
 289 {
 290         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 291         struct iwl_tof_gen_resp_cmd *resp = (void *)pkt->data;
 292
 293         lockdep_assert_held(&mvm->mutex);
 294
 295         switch (le32_to_cpu(resp->sub_grp_cmd_id)) {
 296         case TOF_RANGE_RESPONSE_NOTIF:
 297                 iwl_mvm_tof_range_resp(mvm, resp->data);
 298                 break;
 299         case TOF_MCSI_DEBUG_NOTIF:
 300                 iwl_mvm_tof_mcsi_notif(mvm, resp->data);
 301                 break;
 302         case TOF_NEIGHBOR_REPORT_RSP_NOTIF:
 303                 iwl_mvm_tof_nb_report_notif(mvm, resp->data);
 304                 break;
 305         default:
 306                IWL_ERR(mvm, "Unknown sub-group command 0x%x\n",
 307                        resp->sub_grp_cmd_id);
 308                break;
 309         }
 310 }