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 <ilw@linux.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.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
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
iwl_mvm_tof_init(struct iwl_mvm * mvm)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
iwl_mvm_tof_clean(struct iwl_mvm * mvm)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
iwl_tof_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)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
iwl_mvm_tof_config_cmd(struct iwl_mvm * mvm)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
iwl_mvm_tof_range_abort_cmd(struct iwl_mvm * mvm,u8 id)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
iwl_mvm_tof_responder_cmd(struct iwl_mvm * mvm,struct ieee80211_vif * vif)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
iwl_mvm_tof_range_request_cmd(struct iwl_mvm * mvm,struct ieee80211_vif * vif)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
iwl_mvm_tof_range_request_ext_cmd(struct iwl_mvm * mvm,struct ieee80211_vif * vif)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
iwl_mvm_tof_range_resp(struct iwl_mvm * mvm,void * data)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
iwl_mvm_tof_mcsi_notif(struct iwl_mvm * mvm,void * data)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
iwl_mvm_tof_nb_report_notif(struct iwl_mvm * mvm,void * data)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
iwl_mvm_tof_resp_handler(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)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 }
307