1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2020 Felix Fietkau <nbd@nbd.name> */ 3 4 #include "mt7615.h" 5 #include "eeprom.h" 6 #include "mcu.h" 7 8 enum { 9 TM_CHANGED_TXPOWER_CTRL, 10 TM_CHANGED_TXPOWER, 11 TM_CHANGED_FREQ_OFFSET, 12 13 /* must be last */ 14 NUM_TM_CHANGED 15 }; 16 17 18 static const u8 tm_change_map[] = { 19 [TM_CHANGED_TXPOWER_CTRL] = MT76_TM_ATTR_TX_POWER_CONTROL, 20 [TM_CHANGED_TXPOWER] = MT76_TM_ATTR_TX_POWER, 21 [TM_CHANGED_FREQ_OFFSET] = MT76_TM_ATTR_FREQ_OFFSET, 22 }; 23 24 static const u32 reg_backup_list[] = { 25 MT_WF_PHY_RFINTF3_0(0), 26 MT_WF_PHY_RFINTF3_0(1), 27 MT_WF_PHY_RFINTF3_0(2), 28 MT_WF_PHY_RFINTF3_0(3), 29 MT_ANT_SWITCH_CON(2), 30 MT_ANT_SWITCH_CON(3), 31 MT_ANT_SWITCH_CON(4), 32 MT_ANT_SWITCH_CON(6), 33 MT_ANT_SWITCH_CON(7), 34 MT_ANT_SWITCH_CON(8), 35 }; 36 37 static const struct { 38 u16 wf; 39 u16 reg; 40 } rf_backup_list[] = { 41 { 0, 0x48 }, 42 { 1, 0x48 }, 43 { 2, 0x48 }, 44 { 3, 0x48 }, 45 }; 46 47 static int 48 mt7615_tm_set_tx_power(struct mt7615_phy *phy) 49 { 50 struct mt7615_dev *dev = phy->dev; 51 struct mt76_phy *mphy = phy->mt76; 52 int i, ret, n_chains = hweight8(mphy->antenna_mask); 53 struct cfg80211_chan_def *chandef = &mphy->chandef; 54 int freq = chandef->center_freq1, len, target_chains; 55 u8 *data, *eep = (u8 *)dev->mt76.eeprom.data; 56 enum nl80211_band band = chandef->chan->band; 57 struct sk_buff *skb; 58 struct { 59 u8 center_chan; 60 u8 dbdc_idx; 61 u8 band; 62 u8 rsv; 63 } __packed req_hdr = { 64 .center_chan = ieee80211_frequency_to_channel(freq), 65 .band = band, 66 .dbdc_idx = phy != &dev->phy, 67 }; 68 u8 *tx_power = NULL; 69 70 if (dev->mt76.test.state != MT76_TM_STATE_OFF) 71 tx_power = dev->mt76.test.tx_power; 72 73 len = sizeof(req_hdr) + MT7615_EE_MAX - MT_EE_NIC_CONF_0; 74 skb = mt76_mcu_msg_alloc(&dev->mt76, NULL, sizeof(req_hdr) + len); 75 if (!skb) 76 return -ENOMEM; 77 78 skb_put_data(skb, &req_hdr, sizeof(req_hdr)); 79 data = skb_put_data(skb, eep + MT_EE_NIC_CONF_0, len); 80 81 target_chains = mt7615_ext_pa_enabled(dev, band) ? 1 : n_chains; 82 for (i = 0; i < target_chains; i++) { 83 int index; 84 85 ret = mt7615_eeprom_get_target_power_index(dev, chandef->chan, i); 86 if (ret < 0) 87 return -EINVAL; 88 89 index = ret - MT_EE_NIC_CONF_0; 90 if (tx_power && tx_power[i]) 91 data[ret - MT_EE_NIC_CONF_0] = tx_power[i]; 92 } 93 94 return __mt76_mcu_skb_send_msg(&dev->mt76, skb, 95 MCU_EXT_CMD_SET_TX_POWER_CTRL, false); 96 } 97 98 static void 99 mt7615_tm_reg_backup_restore(struct mt7615_dev *dev) 100 { 101 u32 *b = dev->test.reg_backup; 102 int n_regs = ARRAY_SIZE(reg_backup_list); 103 int n_rf_regs = ARRAY_SIZE(rf_backup_list); 104 int i; 105 106 if (dev->mt76.test.state == MT76_TM_STATE_OFF) { 107 for (i = 0; i < n_regs; i++) 108 mt76_wr(dev, reg_backup_list[i], b[i]); 109 110 for (i = 0; i < n_rf_regs; i++) 111 mt7615_rf_wr(dev, rf_backup_list[i].wf, 112 rf_backup_list[i].reg, b[n_regs + i]); 113 return; 114 } 115 116 if (b) 117 return; 118 119 b = devm_kzalloc(dev->mt76.dev, 4 * (n_regs + n_rf_regs), 120 GFP_KERNEL); 121 if (!b) 122 return; 123 124 dev->test.reg_backup = b; 125 for (i = 0; i < n_regs; i++) 126 b[i] = mt76_rr(dev, reg_backup_list[i]); 127 for (i = 0; i < n_rf_regs; i++) 128 b[n_regs + i] = mt7615_rf_rr(dev, rf_backup_list[i].wf, 129 rf_backup_list[i].reg); 130 } 131 132 133 static void 134 mt7615_tm_init_phy(struct mt7615_dev *dev, struct mt7615_phy *phy) 135 { 136 unsigned int total_flags = ~0; 137 138 if (!test_bit(MT76_STATE_RUNNING, &phy->mt76->state)) 139 return; 140 141 mutex_unlock(&dev->mt76.mutex); 142 mt7615_set_channel(phy); 143 mt7615_ops.configure_filter(phy->mt76->hw, 0, &total_flags, 0); 144 mutex_lock(&dev->mt76.mutex); 145 146 mt7615_tm_reg_backup_restore(dev); 147 } 148 149 static void 150 mt7615_tm_init(struct mt7615_dev *dev) 151 { 152 mt7615_tm_init_phy(dev, &dev->phy); 153 154 if (dev->mt76.phy2) 155 mt7615_tm_init_phy(dev, dev->mt76.phy2->priv); 156 } 157 158 static void 159 mt7615_tm_set_rx_enable(struct mt7615_dev *dev, bool en) 160 { 161 u32 rqcr_mask = (MT_ARB_RQCR_RX_START | 162 MT_ARB_RQCR_RXV_START | 163 MT_ARB_RQCR_RXV_R_EN | 164 MT_ARB_RQCR_RXV_T_EN) * 165 (BIT(0) | BIT(MT_ARB_RQCR_BAND_SHIFT)); 166 167 if (en) { 168 mt76_clear(dev, MT_ARB_SCR, 169 MT_ARB_SCR_RX0_DISABLE | MT_ARB_SCR_RX1_DISABLE); 170 mt76_set(dev, MT_ARB_RQCR, rqcr_mask); 171 } else { 172 mt76_set(dev, MT_ARB_SCR, 173 MT_ARB_SCR_RX0_DISABLE | MT_ARB_SCR_RX1_DISABLE); 174 mt76_clear(dev, MT_ARB_RQCR, rqcr_mask); 175 } 176 } 177 178 static void 179 mt7615_tm_set_tx_antenna(struct mt7615_dev *dev, bool en) 180 { 181 struct mt76_testmode_data *td = &dev->mt76.test; 182 u8 mask = td->tx_antenna_mask; 183 int i; 184 185 if (!mask) 186 return; 187 188 if (!en) 189 mask = dev->phy.chainmask; 190 191 for (i = 0; i < 4; i++) { 192 mt76_rmw_field(dev, MT_WF_PHY_RFINTF3_0(i), 193 MT_WF_PHY_RFINTF3_0_ANT, 194 td->tx_antenna_mask & BIT(i) ? 0 : 0xa); 195 196 } 197 198 /* 2.4 GHz band */ 199 mt76_rmw_field(dev, MT_ANT_SWITCH_CON(3), MT_ANT_SWITCH_CON_MODE(0), 200 (td->tx_antenna_mask & BIT(0)) ? 0x8 : 0x1b); 201 mt76_rmw_field(dev, MT_ANT_SWITCH_CON(4), MT_ANT_SWITCH_CON_MODE(2), 202 (td->tx_antenna_mask & BIT(1)) ? 0xe : 0x1b); 203 mt76_rmw_field(dev, MT_ANT_SWITCH_CON(6), MT_ANT_SWITCH_CON_MODE1(0), 204 (td->tx_antenna_mask & BIT(2)) ? 0x0 : 0xf); 205 mt76_rmw_field(dev, MT_ANT_SWITCH_CON(7), MT_ANT_SWITCH_CON_MODE1(2), 206 (td->tx_antenna_mask & BIT(3)) ? 0x6 : 0xf); 207 208 /* 5 GHz band */ 209 mt76_rmw_field(dev, MT_ANT_SWITCH_CON(4), MT_ANT_SWITCH_CON_MODE(1), 210 (td->tx_antenna_mask & BIT(0)) ? 0xd : 0x1b); 211 mt76_rmw_field(dev, MT_ANT_SWITCH_CON(2), MT_ANT_SWITCH_CON_MODE(3), 212 (td->tx_antenna_mask & BIT(1)) ? 0x13 : 0x1b); 213 mt76_rmw_field(dev, MT_ANT_SWITCH_CON(7), MT_ANT_SWITCH_CON_MODE1(1), 214 (td->tx_antenna_mask & BIT(2)) ? 0x5 : 0xf); 215 mt76_rmw_field(dev, MT_ANT_SWITCH_CON(8), MT_ANT_SWITCH_CON_MODE1(3), 216 (td->tx_antenna_mask & BIT(3)) ? 0xb : 0xf); 217 218 for (i = 0; i < 4; i++) { 219 u32 val; 220 221 val = mt7615_rf_rr(dev, i, 0x48); 222 val &= ~(0x3ff << 20); 223 if (td->tx_antenna_mask & BIT(i)) 224 val |= 3 << 20; 225 else 226 val |= (2 << 28) | (2 << 26) | (8 << 20); 227 mt7615_rf_wr(dev, i, 0x48, val); 228 } 229 } 230 231 static void 232 mt7615_tm_set_tx_frames(struct mt7615_dev *dev, bool en) 233 { 234 struct ieee80211_tx_info *info; 235 struct sk_buff *skb = dev->mt76.test.tx_skb; 236 237 mt7615_mcu_set_chan_info(&dev->phy, MCU_EXT_CMD_SET_RX_PATH); 238 mt7615_tm_set_tx_antenna(dev, en); 239 mt7615_tm_set_rx_enable(dev, !en); 240 if (!en || !skb) 241 return; 242 243 info = IEEE80211_SKB_CB(skb); 244 info->control.vif = dev->phy.monitor_vif; 245 } 246 247 static void 248 mt7615_tm_update_params(struct mt7615_dev *dev, u32 changed) 249 { 250 struct mt76_testmode_data *td = &dev->mt76.test; 251 bool en = dev->mt76.test.state != MT76_TM_STATE_OFF; 252 253 if (changed & BIT(TM_CHANGED_TXPOWER_CTRL)) 254 mt7615_mcu_set_test_param(dev, MCU_ATE_SET_TX_POWER_CONTROL, 255 en, en && td->tx_power_control); 256 if (changed & BIT(TM_CHANGED_FREQ_OFFSET)) 257 mt7615_mcu_set_test_param(dev, MCU_ATE_SET_FREQ_OFFSET, 258 en, en ? td->freq_offset : 0); 259 if (changed & BIT(TM_CHANGED_TXPOWER)) 260 mt7615_tm_set_tx_power(&dev->phy); 261 } 262 263 static int 264 mt7615_tm_set_state(struct mt76_dev *mdev, enum mt76_testmode_state state) 265 { 266 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); 267 struct mt76_testmode_data *td = &mdev->test; 268 enum mt76_testmode_state prev_state = td->state; 269 270 mdev->test.state = state; 271 272 if (prev_state == MT76_TM_STATE_TX_FRAMES) 273 mt7615_tm_set_tx_frames(dev, false); 274 else if (state == MT76_TM_STATE_TX_FRAMES) 275 mt7615_tm_set_tx_frames(dev, true); 276 277 if (state <= MT76_TM_STATE_IDLE) 278 mt7615_tm_init(dev); 279 280 if ((state == MT76_TM_STATE_IDLE && 281 prev_state == MT76_TM_STATE_OFF) || 282 (state == MT76_TM_STATE_OFF && 283 prev_state == MT76_TM_STATE_IDLE)) { 284 u32 changed = 0; 285 int i; 286 287 for (i = 0; i < ARRAY_SIZE(tm_change_map); i++) { 288 u16 cur = tm_change_map[i]; 289 290 if (td->param_set[cur / 32] & BIT(cur % 32)) 291 changed |= BIT(i); 292 } 293 294 mt7615_tm_update_params(dev, changed); 295 } 296 297 return 0; 298 } 299 300 static int 301 mt7615_tm_set_params(struct mt76_dev *mdev, struct nlattr **tb, 302 enum mt76_testmode_state new_state) 303 { 304 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); 305 struct mt76_testmode_data *td = &dev->mt76.test; 306 u32 changed = 0; 307 int i; 308 309 BUILD_BUG_ON(NUM_TM_CHANGED >= 32); 310 311 if (new_state == MT76_TM_STATE_OFF || 312 td->state == MT76_TM_STATE_OFF) 313 return 0; 314 315 if (td->tx_antenna_mask & ~dev->phy.chainmask) 316 return -EINVAL; 317 318 for (i = 0; i < ARRAY_SIZE(tm_change_map); i++) { 319 if (tb[tm_change_map[i]]) 320 changed |= BIT(i); 321 } 322 323 mt7615_tm_update_params(dev, changed); 324 325 return 0; 326 } 327 328 static int 329 mt7615_tm_dump_stats(struct mt76_dev *mdev, struct sk_buff *msg) 330 { 331 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); 332 void *rx, *rssi; 333 int i; 334 335 rx = nla_nest_start(msg, MT76_TM_STATS_ATTR_LAST_RX); 336 if (!rx) 337 return -ENOMEM; 338 339 if (nla_put_s32(msg, MT76_TM_RX_ATTR_FREQ_OFFSET, dev->test.last_freq_offset) || 340 nla_put_s32(msg, MT76_TM_RX_ATTR_IB_RSSI, dev->test.last_ib_rssi) || 341 nla_put_s32(msg, MT76_TM_RX_ATTR_WB_RSSI, dev->test.last_wb_rssi)) 342 return -ENOMEM; 343 344 rssi = nla_nest_start(msg, MT76_TM_RX_ATTR_RCPI); 345 if (!rssi) 346 return -ENOMEM; 347 348 for (i = 0; i < ARRAY_SIZE(dev->test.last_rcpi); i++) 349 if (nla_put_u8(msg, i, dev->test.last_rcpi[i])) 350 return -ENOMEM; 351 352 nla_nest_end(msg, rssi); 353 354 nla_nest_end(msg, rx); 355 356 return 0; 357 } 358 359 const struct mt76_testmode_ops mt7615_testmode_ops = { 360 .set_state = mt7615_tm_set_state, 361 .set_params = mt7615_tm_set_params, 362 .dump_stats = mt7615_tm_dump_stats, 363 }; 364