1 // SPDX-License-Identifier: ISC
2 /* Copyright (C) 2020 MediaTek Inc. */
3
4 #include <linux/etherdevice.h>
5 #include <linux/firmware.h>
6 #include "mt7921.h"
7 #include "mac.h"
8 #include "mcu.h"
9 #include "eeprom.h"
10
11 static const struct ieee80211_iface_limit if_limits[] = {
12 {
13 .max = MT7921_MAX_INTERFACES,
14 .types = BIT(NL80211_IFTYPE_STATION)
15 },
16 {
17 .max = 1,
18 .types = BIT(NL80211_IFTYPE_AP)
19 }
20 };
21
22 static const struct ieee80211_iface_combination if_comb[] = {
23 {
24 .limits = if_limits,
25 .n_limits = ARRAY_SIZE(if_limits),
26 .max_interfaces = MT7921_MAX_INTERFACES,
27 .num_different_channels = 1,
28 .beacon_int_infra_match = true,
29 },
30 };
31
32 static const struct ieee80211_iface_limit if_limits_chanctx[] = {
33 {
34 .max = 2,
35 .types = BIT(NL80211_IFTYPE_STATION),
36 },
37 {
38 .max = 1,
39 .types = BIT(NL80211_IFTYPE_AP),
40 }
41 };
42
43 static const struct ieee80211_iface_combination if_comb_chanctx[] = {
44 {
45 .limits = if_limits_chanctx,
46 .n_limits = ARRAY_SIZE(if_limits_chanctx),
47 .max_interfaces = 2,
48 .num_different_channels = 2,
49 .beacon_int_infra_match = false,
50 }
51 };
52
53 static void
mt7921_regd_notifier(struct wiphy * wiphy,struct regulatory_request * request)54 mt7921_regd_notifier(struct wiphy *wiphy,
55 struct regulatory_request *request)
56 {
57 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
58 struct mt7921_dev *dev = mt7921_hw_dev(hw);
59
60 memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2));
61 dev->mt76.region = request->dfs_region;
62 dev->country_ie_env = request->country_ie_env;
63
64 mt7921_mutex_acquire(dev);
65 mt7921_mcu_set_clc(dev, request->alpha2, request->country_ie_env);
66 mt76_connac_mcu_set_channel_domain(hw->priv);
67 mt7921_set_tx_sar_pwr(hw, NULL);
68 mt7921_mutex_release(dev);
69 }
70
71 static int
mt7921_init_wiphy(struct ieee80211_hw * hw)72 mt7921_init_wiphy(struct ieee80211_hw *hw)
73 {
74 struct mt7921_phy *phy = mt7921_hw_phy(hw);
75 struct mt7921_dev *dev = phy->dev;
76 struct wiphy *wiphy = hw->wiphy;
77
78 hw->queues = 4;
79 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HE;
80 hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HE;
81 hw->netdev_features = NETIF_F_RXCSUM;
82
83 hw->radiotap_timestamp.units_pos =
84 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US;
85
86 phy->slottime = 9;
87
88 hw->sta_data_size = sizeof(struct mt7921_sta);
89 hw->vif_data_size = sizeof(struct mt7921_vif);
90
91 if (dev->fw_features & MT7921_FW_CAP_CNM) {
92 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
93 wiphy->iface_combinations = if_comb_chanctx;
94 wiphy->n_iface_combinations = ARRAY_SIZE(if_comb_chanctx);
95 } else {
96 wiphy->flags &= ~WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
97 wiphy->iface_combinations = if_comb;
98 wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);
99 }
100 wiphy->flags &= ~(WIPHY_FLAG_IBSS_RSN | WIPHY_FLAG_4ADDR_AP |
101 WIPHY_FLAG_4ADDR_STATION);
102 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
103 BIT(NL80211_IFTYPE_AP);
104 wiphy->max_remain_on_channel_duration = 5000;
105 wiphy->max_scan_ie_len = MT76_CONNAC_SCAN_IE_LEN;
106 wiphy->max_scan_ssids = 4;
107 wiphy->max_sched_scan_plan_interval =
108 MT76_CONNAC_MAX_TIME_SCHED_SCAN_INTERVAL;
109 wiphy->max_sched_scan_ie_len = IEEE80211_MAX_DATA_LEN;
110 wiphy->max_sched_scan_ssids = MT76_CONNAC_MAX_SCHED_SCAN_SSID;
111 wiphy->max_match_sets = MT76_CONNAC_MAX_SCAN_MATCH;
112 wiphy->max_sched_scan_reqs = 1;
113 wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
114 wiphy->reg_notifier = mt7921_regd_notifier;
115
116 wiphy->features |= NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
117 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
118 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SET_SCAN_DWELL);
119 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);
120 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HT);
121 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_VHT);
122 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HE);
123 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT);
124
125 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
126 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
127 ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD);
128 ieee80211_hw_set(hw, SUPPORTS_RX_DECAP_OFFLOAD);
129 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
130 ieee80211_hw_set(hw, SUPPORTS_PS);
131 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
132 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
133 ieee80211_hw_set(hw, CONNECTION_MONITOR);
134
135 if (dev->pm.enable)
136 ieee80211_hw_set(hw, CONNECTION_MONITOR);
137
138 hw->max_tx_fragments = 4;
139
140 return 0;
141 }
142
143 static void
mt7921_mac_init_band(struct mt7921_dev * dev,u8 band)144 mt7921_mac_init_band(struct mt7921_dev *dev, u8 band)
145 {
146 u32 mask, set;
147
148 mt76_rmw_field(dev, MT_TMAC_CTCR0(band),
149 MT_TMAC_CTCR0_INS_DDLMT_REFTIME, 0x3f);
150 mt76_set(dev, MT_TMAC_CTCR0(band),
151 MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN |
152 MT_TMAC_CTCR0_INS_DDLMT_EN);
153
154 mt76_set(dev, MT_WF_RMAC_MIB_TIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
155 mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
156
157 /* enable MIB tx-rx time reporting */
158 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_TXDUR_EN);
159 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_RXDUR_EN);
160
161 mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536);
162 /* disable rx rate report by default due to hw issues */
163 mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN);
164
165 /* filter out non-resp frames and get instantaneous signal reporting */
166 mask = MT_WTBLOFF_TOP_RSCR_RCPI_MODE | MT_WTBLOFF_TOP_RSCR_RCPI_PARAM;
167 set = FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_MODE, 0) |
168 FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_PARAM, 0x3);
169 mt76_rmw(dev, MT_WTBLOFF_TOP_RSCR(band), mask, set);
170 }
171
mt7921_check_offload_capability(struct device * dev,const char * fw_wm)172 u8 mt7921_check_offload_capability(struct device *dev, const char *fw_wm)
173 {
174 struct mt7921_fw_features *features = NULL;
175 const struct mt76_connac2_fw_trailer *hdr;
176 struct mt7921_realease_info *rel_info;
177 const struct firmware *fw;
178 int ret, i, offset = 0;
179 const u8 *data, *end;
180
181 ret = request_firmware(&fw, fw_wm, dev);
182 if (ret)
183 return ret;
184
185 if (!fw || !fw->data || fw->size < sizeof(*hdr)) {
186 dev_err(dev, "Invalid firmware\n");
187 goto out;
188 }
189
190 data = fw->data;
191 hdr = (const void *)(fw->data + fw->size - sizeof(*hdr));
192
193 for (i = 0; i < hdr->n_region; i++) {
194 const struct mt76_connac2_fw_region *region;
195
196 region = (const void *)((const u8 *)hdr -
197 (hdr->n_region - i) * sizeof(*region));
198 offset += le32_to_cpu(region->len);
199 }
200
201 data += offset + 16;
202 rel_info = (struct mt7921_realease_info *)data;
203 data += sizeof(*rel_info);
204 end = data + le16_to_cpu(rel_info->len);
205
206 while (data < end) {
207 rel_info = (struct mt7921_realease_info *)data;
208 data += sizeof(*rel_info);
209
210 if (rel_info->tag == MT7921_FW_TAG_FEATURE) {
211 features = (struct mt7921_fw_features *)data;
212 break;
213 }
214
215 data += le16_to_cpu(rel_info->len) + rel_info->pad_len;
216 }
217
218 out:
219 release_firmware(fw);
220
221 return features ? features->data : 0;
222 }
223 EXPORT_SYMBOL_GPL(mt7921_check_offload_capability);
224
mt7921_mac_init(struct mt7921_dev * dev)225 int mt7921_mac_init(struct mt7921_dev *dev)
226 {
227 int i;
228
229 mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536);
230 /* enable hardware de-agg */
231 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);
232 /* enable hardware rx header translation */
233 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN);
234
235 for (i = 0; i < MT7921_WTBL_SIZE; i++)
236 mt7921_mac_wtbl_update(dev, i,
237 MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
238 for (i = 0; i < 2; i++)
239 mt7921_mac_init_band(dev, i);
240
241 return mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0);
242 }
243 EXPORT_SYMBOL_GPL(mt7921_mac_init);
244
__mt7921_init_hardware(struct mt7921_dev * dev)245 static int __mt7921_init_hardware(struct mt7921_dev *dev)
246 {
247 int ret;
248
249 /* force firmware operation mode into normal state,
250 * which should be set before firmware download stage.
251 */
252 mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
253 ret = mt7921_mcu_init(dev);
254 if (ret)
255 goto out;
256
257 mt76_eeprom_override(&dev->mphy);
258
259 ret = mt7921_mcu_set_eeprom(dev);
260 if (ret)
261 goto out;
262
263 ret = mt7921_mac_init(dev);
264 out:
265 return ret;
266 }
267
mt7921_init_hardware(struct mt7921_dev * dev)268 static int mt7921_init_hardware(struct mt7921_dev *dev)
269 {
270 int ret, i;
271
272 set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
273
274 for (i = 0; i < MT7921_MCU_INIT_RETRY_COUNT; i++) {
275 ret = __mt7921_init_hardware(dev);
276 if (!ret)
277 break;
278
279 mt7921_init_reset(dev);
280 }
281
282 if (i == MT7921_MCU_INIT_RETRY_COUNT) {
283 dev_err(dev->mt76.dev, "hardware init failed\n");
284 return ret;
285 }
286
287 return 0;
288 }
289
mt7921_init_wcid(struct mt7921_dev * dev)290 static int mt7921_init_wcid(struct mt7921_dev *dev)
291 {
292 int idx;
293
294 /* Beacon and mgmt frames should occupy wcid 0 */
295 idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7921_WTBL_STA - 1);
296 if (idx)
297 return -ENOSPC;
298
299 dev->mt76.global_wcid.idx = idx;
300 dev->mt76.global_wcid.hw_key_idx = -1;
301 dev->mt76.global_wcid.tx_info |= MT_WCID_TX_INFO_SET;
302 rcu_assign_pointer(dev->mt76.wcid[idx], &dev->mt76.global_wcid);
303
304 return 0;
305 }
306
mt7921_init_work(struct work_struct * work)307 static void mt7921_init_work(struct work_struct *work)
308 {
309 struct mt7921_dev *dev = container_of(work, struct mt7921_dev,
310 init_work);
311 int ret;
312
313 ret = mt7921_init_hardware(dev);
314 if (ret)
315 return;
316
317 mt76_set_stream_caps(&dev->mphy, true);
318 mt7921_set_stream_he_caps(&dev->phy);
319
320 ret = mt76_register_device(&dev->mt76, true, mt76_rates,
321 ARRAY_SIZE(mt76_rates));
322 if (ret) {
323 dev_err(dev->mt76.dev, "register device failed\n");
324 return;
325 }
326
327 ret = mt7921_init_debugfs(dev);
328 if (ret) {
329 dev_err(dev->mt76.dev, "register debugfs failed\n");
330 return;
331 }
332
333 /* we support chip reset now */
334 dev->hw_init_done = true;
335
336 mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev->pm.ds_enable);
337 }
338
mt7921_register_device(struct mt7921_dev * dev)339 int mt7921_register_device(struct mt7921_dev *dev)
340 {
341 struct ieee80211_hw *hw = mt76_hw(dev);
342 int ret;
343
344 dev->phy.dev = dev;
345 dev->phy.mt76 = &dev->mt76.phy;
346 dev->mt76.phy.priv = &dev->phy;
347 dev->mt76.tx_worker.fn = mt7921_tx_worker;
348
349 INIT_DELAYED_WORK(&dev->pm.ps_work, mt7921_pm_power_save_work);
350 INIT_WORK(&dev->pm.wake_work, mt7921_pm_wake_work);
351 spin_lock_init(&dev->pm.wake.lock);
352 mutex_init(&dev->pm.mutex);
353 init_waitqueue_head(&dev->pm.wait);
354 if (mt76_is_sdio(&dev->mt76))
355 init_waitqueue_head(&dev->mt76.sdio.wait);
356 spin_lock_init(&dev->pm.txq_lock);
357 INIT_DELAYED_WORK(&dev->mphy.mac_work, mt7921_mac_work);
358 INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work);
359 INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work);
360 #if IS_ENABLED(CONFIG_IPV6)
361 INIT_WORK(&dev->ipv6_ns_work, mt7921_set_ipv6_ns_work);
362 skb_queue_head_init(&dev->ipv6_ns_list);
363 #endif
364 skb_queue_head_init(&dev->phy.scan_event_list);
365 skb_queue_head_init(&dev->coredump.msg_list);
366 INIT_LIST_HEAD(&dev->sta_poll_list);
367 spin_lock_init(&dev->sta_poll_lock);
368
369 INIT_WORK(&dev->reset_work, mt7921_mac_reset_work);
370 INIT_WORK(&dev->init_work, mt7921_init_work);
371
372 INIT_WORK(&dev->phy.roc_work, mt7921_roc_work);
373 timer_setup(&dev->phy.roc_timer, mt7921_roc_timer, 0);
374 init_waitqueue_head(&dev->phy.roc_wait);
375
376 dev->pm.idle_timeout = MT7921_PM_TIMEOUT;
377 dev->pm.stats.last_wake_event = jiffies;
378 dev->pm.stats.last_doze_event = jiffies;
379 if (!mt76_is_usb(&dev->mt76)) {
380 dev->pm.enable_user = true;
381 dev->pm.enable = true;
382 dev->pm.ds_enable_user = true;
383 dev->pm.ds_enable = true;
384 }
385
386 if (!mt76_is_mmio(&dev->mt76))
387 hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE;
388
389 mt7921_init_acpi_sar(dev);
390
391 ret = mt7921_init_wcid(dev);
392 if (ret)
393 return ret;
394
395 ret = mt7921_init_wiphy(hw);
396 if (ret)
397 return ret;
398
399 dev->mphy.sband_2g.sband.ht_cap.cap |=
400 IEEE80211_HT_CAP_LDPC_CODING |
401 IEEE80211_HT_CAP_MAX_AMSDU;
402 dev->mphy.sband_5g.sband.ht_cap.cap |=
403 IEEE80211_HT_CAP_LDPC_CODING |
404 IEEE80211_HT_CAP_MAX_AMSDU;
405 dev->mphy.sband_5g.sband.vht_cap.cap |=
406 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
407 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK |
408 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
409 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
410 (3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
411 if (is_mt7922(&dev->mt76))
412 dev->mphy.sband_5g.sband.vht_cap.cap |=
413 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
414 IEEE80211_VHT_CAP_SHORT_GI_160;
415
416 dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask;
417 dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask;
418
419 queue_work(system_wq, &dev->init_work);
420
421 return 0;
422 }
423 EXPORT_SYMBOL_GPL(mt7921_register_device);
424