1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2020 MediaTek Inc. */ 3 4 #include <linux/etherdevice.h> 5 #include <linux/hwmon.h> 6 #include <linux/hwmon-sysfs.h> 7 #include <linux/thermal.h> 8 #include <linux/firmware.h> 9 #include "mt7921.h" 10 #include "../mt76_connac2_mac.h" 11 #include "mcu.h" 12 13 #if defined(__linux__) 14 static ssize_t mt7921_thermal_temp_show(struct device *dev, 15 struct device_attribute *attr, 16 char *buf) 17 { 18 switch (to_sensor_dev_attr(attr)->index) { 19 case 0: { 20 struct mt792x_phy *phy = dev_get_drvdata(dev); 21 struct mt792x_dev *mdev = phy->dev; 22 int temperature; 23 24 mt792x_mutex_acquire(mdev); 25 temperature = mt7921_mcu_get_temperature(phy); 26 mt792x_mutex_release(mdev); 27 28 if (temperature < 0) 29 return temperature; 30 /* display in millidegree Celsius */ 31 return sprintf(buf, "%u\n", temperature * 1000); 32 } 33 default: 34 return -EINVAL; 35 } 36 } 37 static SENSOR_DEVICE_ATTR_RO(temp1_input, mt7921_thermal_temp, 0); 38 39 static struct attribute *mt7921_hwmon_attrs[] = { 40 &sensor_dev_attr_temp1_input.dev_attr.attr, 41 NULL, 42 }; 43 ATTRIBUTE_GROUPS(mt7921_hwmon); 44 45 static int mt7921_thermal_init(struct mt792x_phy *phy) 46 { 47 struct wiphy *wiphy = phy->mt76->hw->wiphy; 48 struct device *hwmon; 49 const char *name; 50 51 if (!IS_REACHABLE(CONFIG_HWMON)) 52 return 0; 53 54 name = devm_kasprintf(&wiphy->dev, GFP_KERNEL, "mt7921_%s", 55 wiphy_name(wiphy)); 56 if (!name) 57 return -ENOMEM; 58 59 hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, name, phy, 60 mt7921_hwmon_groups); 61 return PTR_ERR_OR_ZERO(hwmon); 62 } 63 #endif 64 65 static void 66 mt7921_regd_channel_update(struct wiphy *wiphy, struct mt792x_dev *dev) 67 { 68 #define IS_UNII_INVALID(idx, sfreq, efreq) \ 69 (!(dev->phy.clc_chan_conf & BIT(idx)) && (cfreq) >= (sfreq) && (cfreq) <= (efreq)) 70 struct ieee80211_supported_band *sband; 71 struct mt76_dev *mdev = &dev->mt76; 72 struct device_node *np, *band_np; 73 struct ieee80211_channel *ch; 74 int i, cfreq; 75 76 np = mt76_find_power_limits_node(mdev); 77 78 sband = wiphy->bands[NL80211_BAND_5GHZ]; 79 #if defined(CONFIG_OF) 80 band_np = np ? of_get_child_by_name(np, "txpower-5g") : NULL; 81 #else 82 band_np = NULL; 83 #endif 84 for (i = 0; i < sband->n_channels; i++) { 85 ch = &sband->channels[i]; 86 cfreq = ch->center_freq; 87 88 if (np && (!band_np || !mt76_find_channel_node(band_np, ch))) { 89 ch->flags |= IEEE80211_CHAN_DISABLED; 90 continue; 91 } 92 93 /* UNII-4 */ 94 if (IS_UNII_INVALID(0, 5845, 5925)) 95 ch->flags |= IEEE80211_CHAN_DISABLED; 96 } 97 98 sband = wiphy->bands[NL80211_BAND_6GHZ]; 99 if (!sband) 100 return; 101 102 #if defined(CONFIG_OF) 103 band_np = np ? of_get_child_by_name(np, "txpower-6g") : NULL; 104 #else 105 band_np = NULL; 106 #endif 107 for (i = 0; i < sband->n_channels; i++) { 108 ch = &sband->channels[i]; 109 cfreq = ch->center_freq; 110 111 if (np && (!band_np || !mt76_find_channel_node(band_np, ch))) { 112 ch->flags |= IEEE80211_CHAN_DISABLED; 113 continue; 114 } 115 116 /* UNII-5/6/7/8 */ 117 if (IS_UNII_INVALID(1, 5925, 6425) || 118 IS_UNII_INVALID(2, 6425, 6525) || 119 IS_UNII_INVALID(3, 6525, 6875) || 120 IS_UNII_INVALID(4, 6875, 7125)) 121 ch->flags |= IEEE80211_CHAN_DISABLED; 122 } 123 } 124 125 void mt7921_regd_update(struct mt792x_dev *dev) 126 { 127 struct mt76_dev *mdev = &dev->mt76; 128 struct ieee80211_hw *hw = mdev->hw; 129 struct wiphy *wiphy = hw->wiphy; 130 131 mt7921_mcu_set_clc(dev, mdev->alpha2, dev->country_ie_env); 132 mt7921_regd_channel_update(wiphy, dev); 133 mt76_connac_mcu_set_channel_domain(hw->priv); 134 mt7921_set_tx_sar_pwr(hw, NULL); 135 } 136 EXPORT_SYMBOL_GPL(mt7921_regd_update); 137 138 static void 139 mt7921_regd_notifier(struct wiphy *wiphy, 140 struct regulatory_request *request) 141 { 142 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 143 struct mt792x_dev *dev = mt792x_hw_dev(hw); 144 struct mt76_connac_pm *pm = &dev->pm; 145 146 memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2)); 147 dev->mt76.region = request->dfs_region; 148 dev->country_ie_env = request->country_ie_env; 149 150 if (request->initiator == NL80211_REGDOM_SET_BY_USER) { 151 if (dev->mt76.alpha2[0] == '0' && dev->mt76.alpha2[1] == '0') 152 wiphy->regulatory_flags &= ~REGULATORY_COUNTRY_IE_IGNORE; 153 else 154 wiphy->regulatory_flags |= REGULATORY_COUNTRY_IE_IGNORE; 155 } 156 157 if (pm->suspended) 158 return; 159 160 dev->regd_in_progress = true; 161 162 mt792x_mutex_acquire(dev); 163 mt7921_regd_update(dev); 164 mt792x_mutex_release(dev); 165 166 dev->regd_in_progress = false; 167 wake_up(&dev->wait); 168 } 169 170 int mt7921_mac_init(struct mt792x_dev *dev) 171 { 172 int i; 173 174 mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536); 175 /* enable hardware de-agg */ 176 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN); 177 /* enable hardware rx header translation */ 178 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN); 179 180 for (i = 0; i < MT792x_WTBL_SIZE; i++) 181 mt7921_mac_wtbl_update(dev, i, 182 MT_WTBL_UPDATE_ADM_COUNT_CLEAR); 183 for (i = 0; i < 2; i++) 184 mt792x_mac_init_band(dev, i); 185 186 return mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0); 187 } 188 EXPORT_SYMBOL_GPL(mt7921_mac_init); 189 190 static int __mt7921_init_hardware(struct mt792x_dev *dev) 191 { 192 int ret; 193 194 /* force firmware operation mode into normal state, 195 * which should be set before firmware download stage. 196 */ 197 mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE); 198 ret = mt792x_mcu_init(dev); 199 if (ret) 200 goto out; 201 202 mt76_eeprom_override(&dev->mphy); 203 204 ret = mt7921_mcu_set_eeprom(dev); 205 if (ret) 206 goto out; 207 208 ret = mt7921_mac_init(dev); 209 out: 210 return ret; 211 } 212 213 static int mt7921_init_hardware(struct mt792x_dev *dev) 214 { 215 int ret, i; 216 217 set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state); 218 219 for (i = 0; i < MT792x_MCU_INIT_RETRY_COUNT; i++) { 220 ret = __mt7921_init_hardware(dev); 221 if (!ret) 222 break; 223 224 mt792x_init_reset(dev); 225 } 226 227 if (i == MT792x_MCU_INIT_RETRY_COUNT) { 228 dev_err(dev->mt76.dev, "hardware init failed\n"); 229 return ret; 230 } 231 232 return 0; 233 } 234 235 static void mt7921_init_work(struct work_struct *work) 236 { 237 struct mt792x_dev *dev = container_of(work, struct mt792x_dev, 238 init_work); 239 int ret; 240 241 ret = mt7921_init_hardware(dev); 242 if (ret) 243 return; 244 245 mt76_set_stream_caps(&dev->mphy, true); 246 mt7921_set_stream_he_caps(&dev->phy); 247 mt792x_config_mac_addr_list(dev); 248 249 ret = mt76_register_device(&dev->mt76, true, mt76_rates, 250 ARRAY_SIZE(mt76_rates)); 251 if (ret) { 252 dev_err(dev->mt76.dev, "register device failed\n"); 253 return; 254 } 255 256 #if !defined(__FreeBSD__) || defined(CONFIG_MT7921_DEBUGFS) 257 ret = mt7921_init_debugfs(dev); 258 if (ret) { 259 dev_err(dev->mt76.dev, "register debugfs failed\n"); 260 return; 261 } 262 #endif 263 264 #if defined(__linux__) 265 ret = mt7921_thermal_init(&dev->phy); 266 if (ret) { 267 dev_err(dev->mt76.dev, "thermal init failed\n"); 268 return; 269 } 270 #endif 271 272 /* we support chip reset now */ 273 dev->hw_init_done = true; 274 275 mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev->pm.ds_enable); 276 } 277 278 int mt7921_register_device(struct mt792x_dev *dev) 279 { 280 struct ieee80211_hw *hw = mt76_hw(dev); 281 int ret; 282 283 dev->phy.dev = dev; 284 dev->phy.mt76 = &dev->mt76.phy; 285 dev->mt76.phy.priv = &dev->phy; 286 dev->mt76.tx_worker.fn = mt792x_tx_worker; 287 288 INIT_DELAYED_WORK(&dev->pm.ps_work, mt792x_pm_power_save_work); 289 INIT_WORK(&dev->pm.wake_work, mt792x_pm_wake_work); 290 spin_lock_init(&dev->pm.wake.lock); 291 mutex_init(&dev->pm.mutex); 292 init_waitqueue_head(&dev->pm.wait); 293 init_waitqueue_head(&dev->wait); 294 if (mt76_is_sdio(&dev->mt76)) 295 init_waitqueue_head(&dev->mt76.sdio.wait); 296 spin_lock_init(&dev->pm.txq_lock); 297 INIT_DELAYED_WORK(&dev->mphy.mac_work, mt792x_mac_work); 298 INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work); 299 INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work); 300 #if IS_ENABLED(CONFIG_IPV6) 301 INIT_WORK(&dev->ipv6_ns_work, mt7921_set_ipv6_ns_work); 302 skb_queue_head_init(&dev->ipv6_ns_list); 303 #endif 304 skb_queue_head_init(&dev->phy.scan_event_list); 305 skb_queue_head_init(&dev->coredump.msg_list); 306 307 INIT_WORK(&dev->reset_work, mt7921_mac_reset_work); 308 INIT_WORK(&dev->init_work, mt7921_init_work); 309 310 INIT_WORK(&dev->phy.roc_work, mt7921_roc_work); 311 timer_setup(&dev->phy.roc_timer, mt792x_roc_timer, 0); 312 init_waitqueue_head(&dev->phy.roc_wait); 313 314 dev->pm.idle_timeout = MT792x_PM_TIMEOUT; 315 dev->pm.stats.last_wake_event = jiffies; 316 dev->pm.stats.last_doze_event = jiffies; 317 if (!mt76_is_usb(&dev->mt76)) { 318 dev->pm.enable_user = true; 319 dev->pm.enable = true; 320 dev->pm.ds_enable_user = true; 321 dev->pm.ds_enable = true; 322 } 323 324 if (!mt76_is_mmio(&dev->mt76)) 325 hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE; 326 327 mt792x_init_acpi_sar(dev); 328 329 ret = mt792x_init_wcid(dev); 330 if (ret) 331 return ret; 332 333 ret = mt792x_init_wiphy(hw); 334 if (ret) 335 return ret; 336 337 hw->wiphy->reg_notifier = mt7921_regd_notifier; 338 dev->mphy.sband_2g.sband.ht_cap.cap |= 339 IEEE80211_HT_CAP_LDPC_CODING | 340 IEEE80211_HT_CAP_MAX_AMSDU; 341 dev->mphy.sband_5g.sband.ht_cap.cap |= 342 IEEE80211_HT_CAP_LDPC_CODING | 343 IEEE80211_HT_CAP_MAX_AMSDU; 344 dev->mphy.sband_5g.sband.vht_cap.cap |= 345 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 | 346 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK | 347 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 348 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE | 349 (3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT); 350 if (is_mt7922(&dev->mt76)) 351 dev->mphy.sband_5g.sband.vht_cap.cap |= 352 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ | 353 IEEE80211_VHT_CAP_SHORT_GI_160; 354 355 dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask; 356 dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask; 357 358 queue_work(system_wq, &dev->init_work); 359 360 return 0; 361 } 362 EXPORT_SYMBOL_GPL(mt7921_register_device); 363