1 // SPDX-License-Identifier: ISC
2 /* Copyright (C) 2020 MediaTek Inc. */
3
4 #include <linux/etherdevice.h>
5 #include "mt7921.h"
6 #include "mac.h"
7 #include "mcu.h"
8 #include "eeprom.h"
9
10 static const struct ieee80211_iface_limit if_limits[] = {
11 {
12 .max = MT7921_MAX_INTERFACES,
13 .types = BIT(NL80211_IFTYPE_STATION)
14 },
15 {
16 .max = 1,
17 .types = BIT(NL80211_IFTYPE_AP)
18 }
19 };
20
21 static const struct ieee80211_iface_combination if_comb[] = {
22 {
23 .limits = if_limits,
24 .n_limits = ARRAY_SIZE(if_limits),
25 .max_interfaces = MT7921_MAX_INTERFACES,
26 .num_different_channels = 1,
27 .beacon_int_infra_match = true,
28 }
29 };
30
31 static void
mt7921_regd_notifier(struct wiphy * wiphy,struct regulatory_request * request)32 mt7921_regd_notifier(struct wiphy *wiphy,
33 struct regulatory_request *request)
34 {
35 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
36 struct mt7921_dev *dev = mt7921_hw_dev(hw);
37
38 memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2));
39 dev->mt76.region = request->dfs_region;
40 dev->country_ie_env = request->country_ie_env;
41
42 mt7921_mutex_acquire(dev);
43 mt7921_mcu_set_clc(dev, request->alpha2, request->country_ie_env);
44 mt76_connac_mcu_set_channel_domain(hw->priv);
45 mt7921_set_tx_sar_pwr(hw, NULL);
46 mt7921_mutex_release(dev);
47 }
48
49 static int
mt7921_init_wiphy(struct ieee80211_hw * hw)50 mt7921_init_wiphy(struct ieee80211_hw *hw)
51 {
52 struct mt7921_phy *phy = mt7921_hw_phy(hw);
53 struct mt7921_dev *dev = phy->dev;
54 struct wiphy *wiphy = hw->wiphy;
55
56 hw->queues = 4;
57 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HE;
58 hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HE;
59 hw->netdev_features = NETIF_F_RXCSUM;
60
61 hw->radiotap_timestamp.units_pos =
62 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US;
63
64 phy->slottime = 9;
65
66 hw->sta_data_size = sizeof(struct mt7921_sta);
67 hw->vif_data_size = sizeof(struct mt7921_vif);
68
69 wiphy->iface_combinations = if_comb;
70 wiphy->flags &= ~(WIPHY_FLAG_IBSS_RSN | WIPHY_FLAG_4ADDR_AP |
71 WIPHY_FLAG_4ADDR_STATION);
72 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
73 BIT(NL80211_IFTYPE_AP);
74 wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);
75 wiphy->max_scan_ie_len = MT76_CONNAC_SCAN_IE_LEN;
76 wiphy->max_scan_ssids = 4;
77 wiphy->max_sched_scan_plan_interval =
78 MT76_CONNAC_MAX_TIME_SCHED_SCAN_INTERVAL;
79 wiphy->max_sched_scan_ie_len = IEEE80211_MAX_DATA_LEN;
80 wiphy->max_sched_scan_ssids = MT76_CONNAC_MAX_SCHED_SCAN_SSID;
81 wiphy->max_match_sets = MT76_CONNAC_MAX_SCAN_MATCH;
82 wiphy->max_sched_scan_reqs = 1;
83 wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
84 wiphy->reg_notifier = mt7921_regd_notifier;
85
86 wiphy->features |= NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
87 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
88 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SET_SCAN_DWELL);
89 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);
90 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HT);
91 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_VHT);
92 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HE);
93
94 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
95 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
96 ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD);
97 ieee80211_hw_set(hw, SUPPORTS_RX_DECAP_OFFLOAD);
98 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
99 ieee80211_hw_set(hw, SUPPORTS_PS);
100 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
101 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
102 ieee80211_hw_set(hw, CONNECTION_MONITOR);
103
104 if (dev->pm.enable)
105 ieee80211_hw_set(hw, CONNECTION_MONITOR);
106
107 hw->max_tx_fragments = 4;
108
109 return 0;
110 }
111
112 static void
mt7921_mac_init_band(struct mt7921_dev * dev,u8 band)113 mt7921_mac_init_band(struct mt7921_dev *dev, u8 band)
114 {
115 mt76_rmw_field(dev, MT_TMAC_CTCR0(band),
116 MT_TMAC_CTCR0_INS_DDLMT_REFTIME, 0x3f);
117 mt76_set(dev, MT_TMAC_CTCR0(band),
118 MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN |
119 MT_TMAC_CTCR0_INS_DDLMT_EN);
120
121 mt76_set(dev, MT_WF_RMAC_MIB_TIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
122 mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
123
124 /* enable MIB tx-rx time reporting */
125 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_TXDUR_EN);
126 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_RXDUR_EN);
127
128 mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536);
129 /* disable rx rate report by default due to hw issues */
130 mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN);
131 }
132
mt7921_mac_init(struct mt7921_dev * dev)133 int mt7921_mac_init(struct mt7921_dev *dev)
134 {
135 int i;
136
137 mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536);
138 /* enable hardware de-agg */
139 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);
140 /* enable hardware rx header translation */
141 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN);
142
143 for (i = 0; i < MT7921_WTBL_SIZE; i++)
144 mt7921_mac_wtbl_update(dev, i,
145 MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
146 for (i = 0; i < 2; i++)
147 mt7921_mac_init_band(dev, i);
148
149 dev->mt76.rxfilter = mt76_rr(dev, MT_WF_RFCR(0));
150
151 return mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0);
152 }
153 EXPORT_SYMBOL_GPL(mt7921_mac_init);
154
__mt7921_init_hardware(struct mt7921_dev * dev)155 static int __mt7921_init_hardware(struct mt7921_dev *dev)
156 {
157 int ret;
158
159 /* force firmware operation mode into normal state,
160 * which should be set before firmware download stage.
161 */
162 mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
163 ret = mt7921_mcu_init(dev);
164 if (ret)
165 goto out;
166
167 mt76_eeprom_override(&dev->mphy);
168
169 ret = mt7921_mcu_set_eeprom(dev);
170 if (ret)
171 goto out;
172
173 ret = mt7921_mac_init(dev);
174 out:
175 return ret;
176 }
177
mt7921_init_hardware(struct mt7921_dev * dev)178 static int mt7921_init_hardware(struct mt7921_dev *dev)
179 {
180 int ret, i;
181
182 set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
183
184 for (i = 0; i < MT7921_MCU_INIT_RETRY_COUNT; i++) {
185 ret = __mt7921_init_hardware(dev);
186 if (!ret)
187 break;
188
189 mt7921_init_reset(dev);
190 }
191
192 if (i == MT7921_MCU_INIT_RETRY_COUNT) {
193 dev_err(dev->mt76.dev, "hardware init failed\n");
194 return ret;
195 }
196
197 return 0;
198 }
199
mt7921_init_wcid(struct mt7921_dev * dev)200 static int mt7921_init_wcid(struct mt7921_dev *dev)
201 {
202 int idx;
203
204 /* Beacon and mgmt frames should occupy wcid 0 */
205 idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7921_WTBL_STA - 1);
206 if (idx)
207 return -ENOSPC;
208
209 dev->mt76.global_wcid.idx = idx;
210 dev->mt76.global_wcid.hw_key_idx = -1;
211 dev->mt76.global_wcid.tx_info |= MT_WCID_TX_INFO_SET;
212 rcu_assign_pointer(dev->mt76.wcid[idx], &dev->mt76.global_wcid);
213
214 return 0;
215 }
216
mt7921_init_work(struct work_struct * work)217 static void mt7921_init_work(struct work_struct *work)
218 {
219 struct mt7921_dev *dev = container_of(work, struct mt7921_dev,
220 init_work);
221 int ret;
222
223 ret = mt7921_init_hardware(dev);
224 if (ret)
225 return;
226
227 mt76_set_stream_caps(&dev->mphy, true);
228 mt7921_set_stream_he_caps(&dev->phy);
229
230 ret = mt76_register_device(&dev->mt76, true, mt76_rates,
231 ARRAY_SIZE(mt76_rates));
232 if (ret) {
233 dev_err(dev->mt76.dev, "register device failed\n");
234 return;
235 }
236
237 ret = mt7921_init_debugfs(dev);
238 if (ret) {
239 dev_err(dev->mt76.dev, "register debugfs failed\n");
240 return;
241 }
242
243 /* we support chip reset now */
244 dev->hw_init_done = true;
245
246 mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev->pm.ds_enable);
247 }
248
mt7921_register_device(struct mt7921_dev * dev)249 int mt7921_register_device(struct mt7921_dev *dev)
250 {
251 struct ieee80211_hw *hw = mt76_hw(dev);
252 int ret;
253
254 dev->phy.dev = dev;
255 dev->phy.mt76 = &dev->mt76.phy;
256 dev->mt76.phy.priv = &dev->phy;
257 dev->mt76.tx_worker.fn = mt7921_tx_worker;
258
259 INIT_DELAYED_WORK(&dev->pm.ps_work, mt7921_pm_power_save_work);
260 INIT_WORK(&dev->pm.wake_work, mt7921_pm_wake_work);
261 spin_lock_init(&dev->pm.wake.lock);
262 mutex_init(&dev->pm.mutex);
263 init_waitqueue_head(&dev->pm.wait);
264 if (mt76_is_sdio(&dev->mt76))
265 init_waitqueue_head(&dev->mt76.sdio.wait);
266 spin_lock_init(&dev->pm.txq_lock);
267 INIT_DELAYED_WORK(&dev->mphy.mac_work, mt7921_mac_work);
268 INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work);
269 INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work);
270 #if IS_ENABLED(CONFIG_IPV6)
271 INIT_WORK(&dev->ipv6_ns_work, mt7921_set_ipv6_ns_work);
272 skb_queue_head_init(&dev->ipv6_ns_list);
273 #endif
274 skb_queue_head_init(&dev->phy.scan_event_list);
275 skb_queue_head_init(&dev->coredump.msg_list);
276 INIT_LIST_HEAD(&dev->sta_poll_list);
277 spin_lock_init(&dev->sta_poll_lock);
278
279 INIT_WORK(&dev->reset_work, mt7921_mac_reset_work);
280 INIT_WORK(&dev->init_work, mt7921_init_work);
281
282 dev->pm.idle_timeout = MT7921_PM_TIMEOUT;
283 dev->pm.stats.last_wake_event = jiffies;
284 dev->pm.stats.last_doze_event = jiffies;
285 if (!mt76_is_usb(&dev->mt76)) {
286 dev->pm.enable_user = true;
287 dev->pm.enable = true;
288 dev->pm.ds_enable_user = true;
289 dev->pm.ds_enable = true;
290 }
291
292 if (!mt76_is_mmio(&dev->mt76))
293 hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE;
294
295 mt7921_init_acpi_sar(dev);
296
297 ret = mt7921_init_wcid(dev);
298 if (ret)
299 return ret;
300
301 ret = mt7921_init_wiphy(hw);
302 if (ret)
303 return ret;
304
305 dev->mphy.sband_2g.sband.ht_cap.cap |=
306 IEEE80211_HT_CAP_LDPC_CODING |
307 IEEE80211_HT_CAP_MAX_AMSDU;
308 dev->mphy.sband_5g.sband.ht_cap.cap |=
309 IEEE80211_HT_CAP_LDPC_CODING |
310 IEEE80211_HT_CAP_MAX_AMSDU;
311 dev->mphy.sband_5g.sband.vht_cap.cap |=
312 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
313 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK |
314 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
315 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
316 (3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
317 if (is_mt7922(&dev->mt76))
318 dev->mphy.sband_5g.sband.vht_cap.cap |=
319 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
320 IEEE80211_VHT_CAP_SHORT_GI_160;
321
322 dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask;
323 dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask;
324
325 queue_work(system_wq, &dev->init_work);
326
327 return 0;
328 }
329 EXPORT_SYMBOL_GPL(mt7921_register_device);
330