summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/intel/iwlwifi/mvm/tof.c
blob: 16ce8a56b5b94d9b5356011a98e19888be8faef9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2015 Intel Deutschland GmbH
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 * Intel Linux Wireless <linuxwifi@intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2015 Intel Deutschland GmbH
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/
#include "mvm.h"
#include "fw-api-tof.h"

#define IWL_MVM_TOF_RANGE_REQ_MAX_ID 256

void iwl_mvm_tof_init(struct iwl_mvm *mvm)
{
	struct iwl_mvm_tof_data *tof_data = &mvm->tof_data;

	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
		return;

	memset(tof_data, 0, sizeof(*tof_data));

	tof_data->tof_cfg.sub_grp_cmd_id = cpu_to_le32(TOF_CONFIG_CMD);

#ifdef CONFIG_IWLWIFI_DEBUGFS
	if (IWL_MVM_TOF_IS_RESPONDER) {
		tof_data->responder_cfg.sub_grp_cmd_id =
			cpu_to_le32(TOF_RESPONDER_CONFIG_CMD);
		tof_data->responder_cfg.sta_id = IWL_MVM_INVALID_STA;
	}
#endif

	tof_data->range_req.sub_grp_cmd_id = cpu_to_le32(TOF_RANGE_REQ_CMD);
	tof_data->range_req.req_timeout = 1;
	tof_data->range_req.initiator = 1;
	tof_data->range_req.report_policy = 3;

	tof_data->range_req_ext.sub_grp_cmd_id =
		cpu_to_le32(TOF_RANGE_REQ_EXT_CMD);

	mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
}

void iwl_mvm_tof_clean(struct iwl_mvm *mvm)
{
	struct iwl_mvm_tof_data *tof_data = &mvm->tof_data;

	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
		return;

	memset(tof_data, 0, sizeof(*tof_data));
	mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
}

static void iwl_tof_iterator(void *_data, u8 *mac,
			     struct ieee80211_vif *vif)
{
	bool *enabled = _data;

	/* non bss vif exists */
	if (ieee80211_vif_type_p2p(vif) !=  NL80211_IFTYPE_STATION)
		*enabled = false;
}

int iwl_mvm_tof_config_cmd(struct iwl_mvm *mvm)
{
	struct iwl_tof_config_cmd *cmd = &mvm->tof_data.tof_cfg;
	bool enabled;

	lockdep_assert_held(&mvm->mutex);

	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
		return -EINVAL;

	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_tof_iterator, &enabled);
	if (!enabled) {
		IWL_DEBUG_INFO(mvm, "ToF is not supported (non bss vif)\n");
		return -EINVAL;
	}

	mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
	return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
						    IWL_ALWAYS_LONG_GROUP, 0),
				    0, sizeof(*cmd), cmd);
}

int iwl_mvm_tof_range_abort_cmd(struct iwl_mvm *mvm, u8 id)
{
	struct iwl_tof_range_abort_cmd cmd = {
		.sub_grp_cmd_id = cpu_to_le32(TOF_RANGE_ABORT_CMD),
		.request_id = id,
	};

	lockdep_assert_held(&mvm->mutex);

	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
		return -EINVAL;

	if (id != mvm->tof_data.active_range_request) {
		IWL_ERR(mvm, "Invalid range request id %d (active %d)\n",
			id, mvm->tof_data.active_range_request);
		return -EINVAL;
	}

	/* after abort is sent there's no active request anymore */
	mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;

	return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
						    IWL_ALWAYS_LONG_GROUP, 0),
				    0, sizeof(cmd), &cmd);
}

#ifdef CONFIG_IWLWIFI_DEBUGFS
int iwl_mvm_tof_responder_cmd(struct iwl_mvm *mvm,
			      struct ieee80211_vif *vif)
{
	struct iwl_tof_responder_config_cmd *cmd = &mvm->tof_data.responder_cfg;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	lockdep_assert_held(&mvm->mutex);

	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
		return -EINVAL;

	if (vif->p2p || vif->type != NL80211_IFTYPE_AP ||
	    !mvmvif->ap_ibss_active) {
		IWL_ERR(mvm, "Cannot start responder, not in AP mode\n");
		return -EIO;
	}

	cmd->sta_id = mvmvif->bcast_sta.sta_id;
	memcpy(cmd->bssid, vif->addr, ETH_ALEN);
	return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
						    IWL_ALWAYS_LONG_GROUP, 0),
				    0, sizeof(*cmd), cmd);
}
#endif

int iwl_mvm_tof_range_request_cmd(struct iwl_mvm *mvm,
				  struct ieee80211_vif *vif)
{
	struct iwl_host_cmd cmd = {
		.id = iwl_cmd_id(TOF_CMD, IWL_ALWAYS_LONG_GROUP, 0),
		.len = { sizeof(mvm->tof_data.range_req), },
		/* no copy because of the command size */
		.dataflags = { IWL_HCMD_DFL_NOCOPY, },
	};

	lockdep_assert_held(&mvm->mutex);

	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
		return -EINVAL;

	if (ieee80211_vif_type_p2p(vif) !=  NL80211_IFTYPE_STATION) {
		IWL_ERR(mvm, "Cannot send range request, not STA mode\n");
		return -EIO;
	}

	/* nesting of range requests is not supported in FW */
	if (mvm->tof_data.active_range_request !=
		IWL_MVM_TOF_RANGE_REQ_MAX_ID) {
		IWL_ERR(mvm, "Cannot send range req, already active req %d\n",
			mvm->tof_data.active_range_request);
		return -EIO;
	}

	mvm->tof_data.active_range_request = mvm->tof_data.range_req.request_id;

	cmd.data[0] = &mvm->tof_data.range_req;
	return iwl_mvm_send_cmd(mvm, &cmd);
}

int iwl_mvm_tof_range_request_ext_cmd(struct iwl_mvm *mvm,
				      struct ieee80211_vif *vif)
{
	lockdep_assert_held(&mvm->mutex);

	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
		return -EINVAL;

	if (ieee80211_vif_type_p2p(vif) !=  NL80211_IFTYPE_STATION) {
		IWL_ERR(mvm, "Cannot send ext range req, not in STA mode\n");
		return -EIO;
	}

	return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
						    IWL_ALWAYS_LONG_GROUP, 0),
				    0, sizeof(mvm->tof_data.range_req_ext),
				    &mvm->tof_data.range_req_ext);
}

static int iwl_mvm_tof_range_resp(struct iwl_mvm *mvm, void *data)
{
	struct iwl_tof_range_rsp_ntfy *resp = (void *)data;

	if (resp->request_id != mvm->tof_data.active_range_request) {
		IWL_ERR(mvm, "Request id mismatch, got %d, active %d\n",
			resp->request_id, mvm->tof_data.active_range_request);
		return -EIO;
	}

	memcpy(&mvm->tof_data.range_resp, resp,
	       sizeof(struct iwl_tof_range_rsp_ntfy));
	mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;

	return 0;
}

static int iwl_mvm_tof_mcsi_notif(struct iwl_mvm *mvm, void *data)
{
	struct iwl_tof_mcsi_notif *resp = (struct iwl_tof_mcsi_notif *)data;

	IWL_DEBUG_INFO(mvm, "MCSI notification, token %d\n", resp->token);
	return 0;
}

static int iwl_mvm_tof_nb_report_notif(struct iwl_mvm *mvm, void *data)
{
	struct iwl_tof_neighbor_report *report =
		(struct iwl_tof_neighbor_report *)data;

	IWL_DEBUG_INFO(mvm, "NB report, bssid %pM, token %d, status 0x%x\n",
		       report->bssid, report->request_token, report->status);
	return 0;
}

void iwl_mvm_tof_resp_handler(struct iwl_mvm *mvm,
			      struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_tof_gen_resp_cmd *resp = (void *)pkt->data;

	lockdep_assert_held(&mvm->mutex);

	switch (le32_to_cpu(resp->sub_grp_cmd_id)) {
	case TOF_RANGE_RESPONSE_NOTIF:
		iwl_mvm_tof_range_resp(mvm, resp->data);
		break;
	case TOF_MCSI_DEBUG_NOTIF:
		iwl_mvm_tof_mcsi_notif(mvm, resp->data);
		break;
	case TOF_NEIGHBOR_REPORT_RSP_NOTIF:
		iwl_mvm_tof_nb_report_notif(mvm, resp->data);
		break;
	default:
	       IWL_ERR(mvm, "Unknown sub-group command 0x%x\n",
		       resp->sub_grp_cmd_id);
	       break;
	}
}