iwlwifi: remove CMD_SYNC
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / quota.c
CommitLineData
8ca151b5
JB
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 *
51368bf7 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8ca151b5
JB
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
410dc5aa 25 * in the file called COPYING.
8ca151b5
JB
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 *
51368bf7 33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8ca151b5
JB
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
64#include <net/mac80211.h>
65#include "fw-api.h"
66#include "mvm.h"
67
6ca40d6e
JB
68#define QUOTA_100 IWL_MVM_MAX_QUOTA
69#define QUOTA_LOWLAT_MIN ((QUOTA_100 * IWL_MVM_LOWLAT_QUOTA_MIN_PERCENT) / 100)
70
8ca151b5
JB
71struct iwl_mvm_quota_iterator_data {
72 int n_interfaces[MAX_BINDINGS];
73 int colors[MAX_BINDINGS];
6ca40d6e
JB
74 int low_latency[MAX_BINDINGS];
75 int n_low_latency_bindings;
8ca151b5
JB
76 struct ieee80211_vif *new_vif;
77};
78
79static void iwl_mvm_quota_iterator(void *_data, u8 *mac,
80 struct ieee80211_vif *vif)
81{
82 struct iwl_mvm_quota_iterator_data *data = _data;
83 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
84 u16 id;
85
86 /*
87 * We'll account for the new interface (if any) below,
88 * skip it here in case we're not called from within
89 * the add_interface callback (otherwise it won't show
90 * up in iteration)
91 */
92 if (vif == data->new_vif)
93 return;
94
95 if (!mvmvif->phy_ctxt)
96 return;
97
98 /* currently, PHY ID == binding ID */
99 id = mvmvif->phy_ctxt->id;
100
101 /* need at least one binding per PHY */
102 BUILD_BUG_ON(NUM_PHY_CTX > MAX_BINDINGS);
103
104 if (WARN_ON_ONCE(id >= MAX_BINDINGS))
105 return;
106
107 if (data->colors[id] < 0)
108 data->colors[id] = mvmvif->phy_ctxt->color;
109 else
110 WARN_ON_ONCE(data->colors[id] != mvmvif->phy_ctxt->color);
111
112 switch (vif->type) {
113 case NL80211_IFTYPE_STATION:
114 if (vif->bss_conf.assoc)
6ca40d6e
JB
115 break;
116 return;
8ca151b5 117 case NL80211_IFTYPE_AP:
5023d966
JB
118 case NL80211_IFTYPE_ADHOC:
119 if (mvmvif->ap_ibss_active)
6ca40d6e
JB
120 break;
121 return;
8ca151b5 122 case NL80211_IFTYPE_MONITOR:
1e1391ca 123 if (mvmvif->monitor_active)
6ca40d6e
JB
124 break;
125 return;
8ca151b5 126 case NL80211_IFTYPE_P2P_DEVICE:
6ca40d6e 127 return;
8ca151b5
JB
128 default:
129 WARN_ON_ONCE(1);
6ca40d6e
JB
130 return;
131 }
132
133 data->n_interfaces[id]++;
134
135 if (iwl_mvm_vif_low_latency(mvmvif) && !data->low_latency[id]) {
136 data->n_low_latency_bindings++;
137 data->low_latency[id] = true;
8ca151b5
JB
138 }
139}
140
507cadf2
DS
141static void iwl_mvm_adjust_quota_for_noa(struct iwl_mvm *mvm,
142 struct iwl_time_quota_cmd *cmd)
143{
144#ifdef CONFIG_NL80211_TESTMODE
145 struct iwl_mvm_vif *mvmvif;
146 int i, phy_id = -1, beacon_int = 0;
147
148 if (!mvm->noa_duration || !mvm->noa_vif)
149 return;
150
151 mvmvif = iwl_mvm_vif_from_mac80211(mvm->noa_vif);
5023d966 152 if (!mvmvif->ap_ibss_active)
507cadf2
DS
153 return;
154
155 phy_id = mvmvif->phy_ctxt->id;
156 beacon_int = mvm->noa_vif->bss_conf.beacon_int;
157
158 for (i = 0; i < MAX_BINDINGS; i++) {
159 u32 id_n_c = le32_to_cpu(cmd->quotas[i].id_and_color);
160 u32 id = (id_n_c & FW_CTXT_ID_MSK) >> FW_CTXT_ID_POS;
161 u32 quota = le32_to_cpu(cmd->quotas[i].quota);
162
163 if (id != phy_id)
164 continue;
165
246dd992
DS
166 quota *= (beacon_int - mvm->noa_duration);
167 quota /= beacon_int;
507cadf2
DS
168
169 cmd->quotas[i].quota = cpu_to_le32(quota);
170 }
171#endif
172}
173
8ca151b5
JB
174int iwl_mvm_update_quotas(struct iwl_mvm *mvm, struct ieee80211_vif *newvif)
175{
f5e45f2d 176 struct iwl_time_quota_cmd cmd = {};
6ca40d6e 177 int i, idx, ret, num_active_macs, quota, quota_rem, n_non_lowlat;
8ca151b5
JB
178 struct iwl_mvm_quota_iterator_data data = {
179 .n_interfaces = {},
180 .colors = { -1, -1, -1, -1 },
181 .new_vif = newvif,
182 };
183
f5e45f2d
JB
184 lockdep_assert_held(&mvm->mutex);
185
8ca151b5
JB
186 /* update all upon completion */
187 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
188 return 0;
189
f5e45f2d
JB
190 /* iterator data above must match */
191 BUILD_BUG_ON(MAX_BINDINGS != 4);
8ca151b5
JB
192
193 ieee80211_iterate_active_interfaces_atomic(
194 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
195 iwl_mvm_quota_iterator, &data);
196 if (newvif) {
197 data.new_vif = NULL;
198 iwl_mvm_quota_iterator(&data, newvif->addr, newvif);
199 }
200
35adfd6e
IP
201 /*
202 * The FW's scheduling session consists of
203 * IWL_MVM_MAX_QUOTA fragments. Divide these fragments
204 * equally between all the bindings that require quota
205 */
7b8359cf 206 num_active_macs = 0;
35adfd6e
IP
207 for (i = 0; i < MAX_BINDINGS; i++) {
208 cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID);
7b8359cf 209 num_active_macs += data.n_interfaces[i];
35adfd6e
IP
210 }
211
6ca40d6e
JB
212 n_non_lowlat = num_active_macs;
213
214 if (data.n_low_latency_bindings == 1) {
215 for (i = 0; i < MAX_BINDINGS; i++) {
216 if (data.low_latency[i]) {
217 n_non_lowlat -= data.n_interfaces[i];
218 break;
219 }
220 }
7b4fe06c
IP
221 }
222
223 if (data.n_low_latency_bindings == 1 && n_non_lowlat) {
224 /*
225 * Reserve quota for the low latency binding in case that
226 * there are several data bindings but only a single
227 * low latency one. Split the rest of the quota equally
228 * between the other data interfaces.
229 */
230 quota = (QUOTA_100 - QUOTA_LOWLAT_MIN) / n_non_lowlat;
231 quota_rem = QUOTA_100 - n_non_lowlat * quota -
232 QUOTA_LOWLAT_MIN;
6ca40d6e 233 } else if (num_active_macs) {
7b4fe06c
IP
234 /*
235 * There are 0 or more than 1 low latency bindings, or all the
236 * data interfaces belong to the single low latency binding.
237 * Split the quota equally between the data interfaces.
238 */
6ca40d6e
JB
239 quota = QUOTA_100 / num_active_macs;
240 quota_rem = QUOTA_100 % num_active_macs;
241 } else {
242 /* values don't really matter - won't be used */
243 quota = 0;
244 quota_rem = 0;
8d683b79 245 }
35adfd6e 246
8ca151b5 247 for (idx = 0, i = 0; i < MAX_BINDINGS; i++) {
8d683b79 248 if (data.colors[i] < 0)
8ca151b5
JB
249 continue;
250
251 cmd.quotas[idx].id_and_color =
252 cpu_to_le32(FW_CMD_ID_AND_COLOR(i, data.colors[i]));
8d683b79 253
1fb184b4 254 if (data.n_interfaces[i] <= 0)
8d683b79 255 cmd.quotas[idx].quota = cpu_to_le32(0);
1fb184b4
JB
256 else if (data.n_low_latency_bindings == 1 && n_non_lowlat &&
257 data.low_latency[i])
7b4fe06c
IP
258 /*
259 * There is more than one binding, but only one of the
260 * bindings is in low latency. For this case, allocate
261 * the minimal required quota for the low latency
262 * binding.
263 */
6ca40d6e 264 cmd.quotas[idx].quota = cpu_to_le32(QUOTA_LOWLAT_MIN);
1fb184b4 265 else
7b8359cf
JB
266 cmd.quotas[idx].quota =
267 cpu_to_le32(quota * data.n_interfaces[i]);
1fb184b4 268
7b4fe06c
IP
269 WARN_ONCE(le32_to_cpu(cmd.quotas[idx].quota) > QUOTA_100,
270 "Binding=%d, quota=%u > max=%u\n",
271 idx, le32_to_cpu(cmd.quotas[idx].quota), QUOTA_100);
272
65d66628 273 cmd.quotas[idx].max_duration = cpu_to_le32(0);
1fb184b4 274
8ca151b5
JB
275 idx++;
276 }
277
2d675e52
IP
278 /* Give the remainder of the session to the first data binding */
279 for (i = 0; i < MAX_BINDINGS; i++) {
280 if (le32_to_cpu(cmd.quotas[i].quota) != 0) {
281 le32_add_cpu(&cmd.quotas[i].quota, quota_rem);
282 break;
283 }
284 }
8ca151b5 285
507cadf2
DS
286 iwl_mvm_adjust_quota_for_noa(mvm, &cmd);
287
a1022927 288 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
8ca151b5
JB
289 sizeof(cmd), &cmd);
290 if (ret)
291 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
292 return ret;
293}
This page took 0.117195 seconds and 5 git commands to generate.