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
17 static const struct ieee80211_iface_combination if_comb[] = {
18 {
19 .limits = if_limits,
20 .n_limits = ARRAY_SIZE(if_limits),
21 .max_interfaces = MT7921_MAX_INTERFACES,
22 .num_different_channels = 1,
23 .beacon_int_infra_match = true,
24 }
25 };
26
27 static void
mt7921_regd_notifier(struct wiphy * wiphy,struct regulatory_request * request)28 mt7921_regd_notifier(struct wiphy *wiphy,
29 struct regulatory_request *request)
30 {
31 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
32 struct mt7921_dev *dev = mt7921_hw_dev(hw);
33 struct mt7921_phy *phy = mt7921_hw_phy(hw);
34
35 memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2));
36 dev->mt76.region = request->dfs_region;
37
38 mt7921_mutex_acquire(dev);
39 mt76_connac_mcu_set_channel_domain(hw->priv);
40 mt76_connac_mcu_set_rate_txpower(phy->mt76);
41 mt7921_mutex_release(dev);
42 }
43
44 static int
mt7921_init_wiphy(struct ieee80211_hw * hw)45 mt7921_init_wiphy(struct ieee80211_hw *hw)
46 {
47 struct mt7921_phy *phy = mt7921_hw_phy(hw);
48 struct mt7921_dev *dev = phy->dev;
49 struct wiphy *wiphy = hw->wiphy;
50
51 hw->queues = 4;
52 hw->max_rx_aggregation_subframes = 64;
53 hw->max_tx_aggregation_subframes = 128;
54 hw->netdev_features = NETIF_F_RXCSUM;
55
56 hw->radiotap_timestamp.units_pos =
57 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US;
58
59 phy->slottime = 9;
60
61 hw->sta_data_size = sizeof(struct mt7921_sta);
62 hw->vif_data_size = sizeof(struct mt7921_vif);
63
64 wiphy->iface_combinations = if_comb;
65 wiphy->flags &= ~(WIPHY_FLAG_IBSS_RSN | WIPHY_FLAG_4ADDR_AP |
66 WIPHY_FLAG_4ADDR_STATION);
67 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
68 wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);
69 wiphy->max_scan_ie_len = MT76_CONNAC_SCAN_IE_LEN;
70 wiphy->max_scan_ssids = 4;
71 wiphy->max_sched_scan_plan_interval =
72 MT76_CONNAC_MAX_TIME_SCHED_SCAN_INTERVAL;
73 wiphy->max_sched_scan_ie_len = IEEE80211_MAX_DATA_LEN;
74 wiphy->max_sched_scan_ssids = MT76_CONNAC_MAX_SCHED_SCAN_SSID;
75 wiphy->max_match_sets = MT76_CONNAC_MAX_SCAN_MATCH;
76 wiphy->max_sched_scan_reqs = 1;
77 wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
78 wiphy->reg_notifier = mt7921_regd_notifier;
79 wiphy->sar_capa = &mt76_sar_capa;
80
81 phy->mt76->frp = devm_kcalloc(dev->mt76.dev,
82 wiphy->sar_capa->num_freq_ranges,
83 sizeof(struct mt76_freq_range_power),
84 GFP_KERNEL);
85 if (!phy->mt76->frp)
86 return -ENOMEM;
87
88 wiphy->features |= NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
89 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
90 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SET_SCAN_DWELL);
91
92 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
93 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
94 ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD);
95 ieee80211_hw_set(hw, SUPPORTS_RX_DECAP_OFFLOAD);
96 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
97 ieee80211_hw_set(hw, SUPPORTS_PS);
98 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
99
100 if (dev->pm.enable)
101 ieee80211_hw_set(hw, CONNECTION_MONITOR);
102
103 hw->max_tx_fragments = 4;
104
105 return 0;
106 }
107
108 static void
mt7921_mac_init_band(struct mt7921_dev * dev,u8 band)109 mt7921_mac_init_band(struct mt7921_dev *dev, u8 band)
110 {
111 mt76_rmw_field(dev, MT_TMAC_CTCR0(band),
112 MT_TMAC_CTCR0_INS_DDLMT_REFTIME, 0x3f);
113 mt76_set(dev, MT_TMAC_CTCR0(band),
114 MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN |
115 MT_TMAC_CTCR0_INS_DDLMT_EN);
116
117 mt76_set(dev, MT_WF_RMAC_MIB_TIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
118 mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
119
120 /* enable MIB tx-rx time reporting */
121 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_TXDUR_EN);
122 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_RXDUR_EN);
123
124 mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536);
125 /* disable rx rate report by default due to hw issues */
126 mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN);
127 }
128
mt7921_mac_init(struct mt7921_dev * dev)129 int mt7921_mac_init(struct mt7921_dev *dev)
130 {
131 int i;
132
133 mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536);
134 /* enable hardware de-agg */
135 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);
136 /* enable hardware rx header translation */
137 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN);
138
139 for (i = 0; i < MT7921_WTBL_SIZE; i++)
140 mt7921_mac_wtbl_update(dev, i,
141 MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
142 for (i = 0; i < 2; i++)
143 mt7921_mac_init_band(dev, i);
144
145 dev->mt76.rxfilter = mt76_rr(dev, MT_WF_RFCR(0));
146
147 return mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0);
148 }
149 EXPORT_SYMBOL_GPL(mt7921_mac_init);
150
__mt7921_init_hardware(struct mt7921_dev * dev)151 static int __mt7921_init_hardware(struct mt7921_dev *dev)
152 {
153 int ret;
154
155 /* force firmware operation mode into normal state,
156 * which should be set before firmware download stage.
157 */
158 mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
159 ret = mt7921_mcu_init(dev);
160 if (ret)
161 goto out;
162
163 mt76_eeprom_override(&dev->mphy);
164
165 ret = mt7921_mcu_set_eeprom(dev);
166 if (ret)
167 goto out;
168
169 ret = mt7921_mac_init(dev);
170 out:
171 return ret;
172 }
173
mt7921_init_hardware(struct mt7921_dev * dev)174 static int mt7921_init_hardware(struct mt7921_dev *dev)
175 {
176 int ret, idx, i;
177
178 set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
179
180 for (i = 0; i < MT7921_MCU_INIT_RETRY_COUNT; i++) {
181 ret = __mt7921_init_hardware(dev);
182 if (!ret)
183 break;
184
185 mt7921_init_reset(dev);
186 }
187
188 if (i == MT7921_MCU_INIT_RETRY_COUNT) {
189 dev_err(dev->mt76.dev, "hardware init failed\n");
190 return ret;
191 }
192
193 /* Beacon and mgmt frames should occupy wcid 0 */
194 idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7921_WTBL_STA - 1);
195 if (idx)
196 return -ENOSPC;
197
198 dev->mt76.global_wcid.idx = idx;
199 dev->mt76.global_wcid.hw_key_idx = -1;
200 dev->mt76.global_wcid.tx_info |= MT_WCID_TX_INFO_SET;
201 rcu_assign_pointer(dev->mt76.wcid[idx], &dev->mt76.global_wcid);
202
203 return 0;
204 }
205
mt7921_register_device(struct mt7921_dev * dev)206 int mt7921_register_device(struct mt7921_dev *dev)
207 {
208 struct ieee80211_hw *hw = mt76_hw(dev);
209 int ret;
210
211 dev->phy.dev = dev;
212 dev->phy.mt76 = &dev->mt76.phy;
213 dev->mt76.phy.priv = &dev->phy;
214 dev->mt76.tx_worker.fn = mt7921_tx_worker;
215
216 INIT_DELAYED_WORK(&dev->pm.ps_work, mt7921_pm_power_save_work);
217 INIT_WORK(&dev->pm.wake_work, mt7921_pm_wake_work);
218 spin_lock_init(&dev->pm.wake.lock);
219 mutex_init(&dev->pm.mutex);
220 init_waitqueue_head(&dev->pm.wait);
221 if (mt76_is_sdio(&dev->mt76))
222 init_waitqueue_head(&dev->mt76.sdio.wait);
223 spin_lock_init(&dev->pm.txq_lock);
224 INIT_DELAYED_WORK(&dev->mphy.mac_work, mt7921_mac_work);
225 INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work);
226 INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work);
227 skb_queue_head_init(&dev->phy.scan_event_list);
228 skb_queue_head_init(&dev->coredump.msg_list);
229 INIT_LIST_HEAD(&dev->sta_poll_list);
230 spin_lock_init(&dev->sta_poll_lock);
231
232 INIT_WORK(&dev->reset_work, mt7921_mac_reset_work);
233
234 dev->pm.idle_timeout = MT7921_PM_TIMEOUT;
235 dev->pm.stats.last_wake_event = jiffies;
236 dev->pm.stats.last_doze_event = jiffies;
237
238 /* TODO: mt7921s run sleep mode on default */
239 if (mt76_is_mmio(&dev->mt76)) {
240 dev->pm.enable = true;
241 dev->pm.ds_enable = true;
242 }
243
244 if (mt76_is_sdio(&dev->mt76))
245 hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE;
246
247 ret = mt7921_init_hardware(dev);
248 if (ret)
249 return ret;
250
251 ret = mt7921_init_wiphy(hw);
252 if (ret)
253 return ret;
254
255 dev->mphy.sband_2g.sband.ht_cap.cap |=
256 IEEE80211_HT_CAP_LDPC_CODING |
257 IEEE80211_HT_CAP_MAX_AMSDU;
258 dev->mphy.sband_5g.sband.ht_cap.cap |=
259 IEEE80211_HT_CAP_LDPC_CODING |
260 IEEE80211_HT_CAP_MAX_AMSDU;
261 dev->mphy.sband_5g.sband.vht_cap.cap |=
262 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 |
263 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK |
264 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
265 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
266 (3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
267
268 dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask;
269 dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask;
270
271 mt76_set_stream_caps(&dev->mphy, true);
272 mt7921_set_stream_he_caps(&dev->phy);
273
274 ret = mt76_register_device(&dev->mt76, true, mt76_rates,
275 ARRAY_SIZE(mt76_rates));
276 if (ret)
277 return ret;
278
279 ret = mt7921_init_debugfs(dev);
280 if (ret)
281 return ret;
282
283 ret = mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev->pm.ds_enable);
284 if (ret)
285 return ret;
286
287 dev->hw_init_done = true;
288
289 return 0;
290 }
291 EXPORT_SYMBOL_GPL(mt7921_register_device);
292